diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2009-09-21 02:55:17 +0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-09-21 02:55:17 +0400 |
| commit | e11c675ede0d42a405ae595528bf0b29ce1ae56f (patch) | |
| tree | e0ec481e66e4a4b70289d78992b209639a582c0c /drivers | |
| parent | 467f9957d9283be40101d7255d06fae7e211ff4c (diff) | |
| parent | 7bd032dc2793afcbaf4a350056768da84cdbd89b (diff) | |
| download | linux-e11c675ede0d42a405ae595528bf0b29ce1ae56f.tar.xz | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty-2.6: (79 commits)
USB serial: update the console driver
usb-serial: straighten out serial_open
usb-serial: add missing tests and debug lines
usb-serial: rename subroutines
usb-serial: fix termios initialization logic
usb-serial: acquire references when a new tty is installed
usb-serial: change logic of serial lookups
usb-serial: put subroutines in logical order
usb-serial: change referencing of port and serial structures
tty: Char: mxser, use THRE for ASPP_OQUEUE ioctl
tty: Char: mxser, add support for CP112UL
uartlite: support shared interrupt lines
tty: USB: serial/mct_u232, fix tty refcnt
tty: riscom8, fix tty refcnt
tty: riscom8, fix shutdown declaration
TTY: fix typos
tty: Power: fix suspend vt regression
tty: vt: use printk_once
tty: handle VT specific compat ioctls in vt driver
n_tty: move echoctl check and clean up logic
...
Diffstat (limited to 'drivers')
105 files changed, 2459 insertions, 3423 deletions
diff --git a/drivers/char/cyclades.c b/drivers/char/cyclades.c index 2dafc2da0648..df5038bbcbc2 100644 --- a/drivers/char/cyclades.c +++ b/drivers/char/cyclades.c @@ -11,7 +11,7 @@ * Initially written by Randolph Bentson <bentson@grieg.seaslug.org>. * Modified and maintained by Marcio Saito <marcio@cyclades.com>. * - * Copyright (C) 2007 Jiri Slaby <jirislaby@gmail.com> + * Copyright (C) 2007-2009 Jiri Slaby <jirislaby@gmail.com> * * Much of the design and some of the code came from serial.c * which was copyright (C) 1991, 1992 Linus Torvalds. It was @@ -19,577 +19,9 @@ * and then fixed as suggested by Michael K. Johnson 12/12/92. * Converted to pci probing and cleaned up by Jiri Slaby. * - * This version supports shared IRQ's (only for PCI boards). - * - * Prevent users from opening non-existing Z ports. - * - * Revision 2.3.2.8 2000/07/06 18:14:16 ivan - * Fixed the PCI detection function to work properly on Alpha systems. - * Implemented support for TIOCSERGETLSR ioctl. - * Implemented full support for non-standard baud rates. - * - * Revision 2.3.2.7 2000/06/01 18:26:34 ivan - * Request PLX I/O region, although driver doesn't use it, to avoid - * problems with other drivers accessing it. - * Removed count for on-board buffer characters in cy_chars_in_buffer - * (Cyclades-Z only). - * - * Revision 2.3.2.6 2000/05/05 13:56:05 ivan - * Driver now reports physical instead of virtual memory addresses. - * Masks were added to some Cyclades-Z read accesses. - * Implemented workaround for PLX9050 bug that would cause a system lockup - * in certain systems, depending on the MMIO addresses allocated to the - * board. - * Changed the Tx interrupt programming in the CD1400 chips to boost up - * performance (Cyclom-Y only). - * Code is now compliant with the new module interface (module_[init|exit]). - * Make use of the PCI helper functions to access PCI resources. - * Did some code "housekeeping". - * - * Revision 2.3.2.5 2000/01/19 14:35:33 ivan - * Fixed bug in cy_set_termios on CRTSCTS flag turnoff. - * - * Revision 2.3.2.4 2000/01/17 09:19:40 ivan - * Fixed SMP locking in Cyclom-Y interrupt handler. - * - * Revision 2.3.2.3 1999/12/28 12:11:39 ivan - * Added a new cyclades_card field called nports to allow the driver to - * know the exact number of ports found by the Z firmware after its load; - * RX buffer contention prevention logic on interrupt op mode revisited - * (Cyclades-Z only); - * Revisited printk's for Z debug; - * Driver now makes sure that the constant SERIAL_XMIT_SIZE is defined; - * - * Revision 2.3.2.2 1999/10/01 11:27:43 ivan - * Fixed bug in cyz_poll that would make all ports but port 0 - * unable to transmit/receive data (Cyclades-Z only); - * Implemented logic to prevent the RX buffer from being stuck with data - * due to a driver / firmware race condition in interrupt op mode - * (Cyclades-Z only); - * Fixed bug in block_til_ready logic that would lead to a system crash; - * Revisited cy_close spinlock usage; - * - * Revision 2.3.2.1 1999/09/28 11:01:22 ivan - * Revisited CONFIG_PCI conditional compilation for PCI board support; - * Implemented TIOCGICOUNT and TIOCMIWAIT ioctl support; - * _Major_ cleanup on the Cyclades-Z interrupt support code / logic; - * Removed CTS handling from the driver -- this is now completely handled - * by the firmware (Cyclades-Z only); - * Flush RX on-board buffers on a port open (Cyclades-Z only); - * Fixed handling of ASYNC_SPD_* TTY flags; - * Module unload now unmaps all memory area allocated by ioremap; - * - * Revision 2.3.1.1 1999/07/15 16:45:53 ivan - * Removed CY_PROC conditional compilation; - * Implemented SMP-awareness for the driver; - * Implemented a new ISA IRQ autoprobe that uses the irq_probe_[on|off] - * functions; - * The driver now accepts memory addresses (maddr=0xMMMMM) and IRQs - * (irq=NN) as parameters (only for ISA boards); - * Fixed bug in set_line_char that would prevent the Cyclades-Z - * ports from being configured at speeds above 115.2Kbps; - * Fixed bug in cy_set_termios that would prevent XON/XOFF flow control - * switching from working properly; - * The driver now only prints IRQ info for the Cyclades-Z if it's - * configured to work in interrupt mode; - * - * Revision 2.2.2.3 1999/06/28 11:13:29 ivan - * Added support for interrupt mode operation for the Z cards; - * Removed the driver inactivity control for the Z; - * Added a missing MOD_DEC_USE_COUNT in the cy_open function for when - * the Z firmware is not loaded yet; - * Replaced the "manual" Z Tx flush buffer by a call to a FW command of - * same functionality; - * Implemented workaround for IRQ setting loss on the PCI configuration - * registers after a PCI bridge EEPROM reload (affects PLX9060 only); - * - * Revision 2.2.2.2 1999/05/14 17:18:15 ivan - * /proc entry location changed to /proc/tty/driver/cyclades; - * Added support to shared IRQ's (only for PCI boards); - * Added support for Cobalt Qube2 systems; - * IRQ [de]allocation scheme revisited; - * BREAK implementation changed in order to make use of the 'break_ctl' - * TTY facility; - * Fixed typo in TTY structure field 'driver_name'; - * Included a PCI bridge reset and EEPROM reload in the board - * initialization code (for both Y and Z series). - * - * Revision 2.2.2.1 1999/04/08 16:17:43 ivan - * Fixed a bug in cy_wait_until_sent that was preventing the port to be - * closed properly after a SIGINT; - * Module usage counter scheme revisited; - * Added support to the upcoming Y PCI boards (i.e., support to additional - * PCI Device ID's). - * - * Revision 2.2.1.10 1999/01/20 16:14:29 ivan - * Removed all unnecessary page-alignement operations in ioremap calls - * (ioremap is currently safe for these operations). - * - * Revision 2.2.1.9 1998/12/30 18:18:30 ivan - * Changed access to PLX PCI bridge registers from I/O to MMIO, in - * order to make PLX9050-based boards work with certain motherboards. - * - * Revision 2.2.1.8 1998/11/13 12:46:20 ivan - * cy_close function now resets (correctly) the tty->closing flag; - * JIFFIES_DIFF macro fixed. - * - * Revision 2.2.1.7 1998/09/03 12:07:28 ivan - * Fixed bug in cy_close function, which was not informing HW of - * which port should have the reception disabled before doing so; - * fixed Cyclom-8YoP hardware detection bug. - * - * Revision 2.2.1.6 1998/08/20 17:15:39 ivan - * Fixed bug in cy_close function, which causes malfunction - * of one of the first 4 ports when a higher port is closed - * (Cyclom-Y only). - * - * Revision 2.2.1.5 1998/08/10 18:10:28 ivan - * Fixed Cyclom-4Yo hardware detection bug. - * - * Revision 2.2.1.4 1998/08/04 11:02:50 ivan - * /proc/cyclades implementation with great collaboration of - * Marc Lewis <marc@blarg.net>; - * cyy_interrupt was changed to avoid occurrence of kernel oopses - * during PPP operation. - * - * Revision 2.2.1.3 1998/06/01 12:09:10 ivan - * General code review in order to comply with 2.1 kernel standards; - * data loss prevention for slow devices revisited (cy_wait_until_sent - * was created); - * removed conditional compilation for new/old PCI structure support - * (now the driver only supports the new PCI structure). - * - * Revision 2.2.1.1 1998/03/19 16:43:12 ivan - * added conditional compilation for new/old PCI structure support; - * removed kernel series (2.0.x / 2.1.x) conditional compilation. - * - * Revision 2.1.1.3 1998/03/16 18:01:12 ivan - * cleaned up the data loss fix; - * fixed XON/XOFF handling once more (Cyclades-Z); - * general review of the driver routines; - * introduction of a mechanism to prevent data loss with slow - * printers, by forcing a delay before closing the port. - * - * Revision 2.1.1.2 1998/02/17 16:50:00 ivan - * fixed detection/handling of new CD1400 in Ye boards; - * fixed XON/XOFF handling (Cyclades-Z); - * fixed data loss caused by a premature port close; - * introduction of a flag that holds the CD1400 version ID per port - * (used by the CYGETCD1400VER new ioctl). - * - * Revision 2.1.1.1 1997/12/03 17:31:19 ivan - * Code review for the module cleanup routine; - * fixed RTS and DTR status report for new CD1400's in get_modem_info; - * includes anonymous changes regarding signal_pending. - * - * Revision 2.1 1997/11/01 17:42:41 ivan - * Changes in the driver to support Alpha systems (except 8Zo V_1); - * BREAK fix for the Cyclades-Z boards; - * driver inactivity control by FW implemented; - * introduction of flag that allows driver to take advantage of - * a special CD1400 feature related to HW flow control; - * added support for the CD1400 rev. J (Cyclom-Y boards); - * introduction of ioctls to: - * - control the rtsdtr_inv flag (Cyclom-Y); - * - control the rflow flag (Cyclom-Y); - * - adjust the polling interval (Cyclades-Z); - * - * Revision 1.36.4.33 1997/06/27 19:00:00 ivan - * Fixes related to kernel version conditional - * compilation. - * - * Revision 1.36.4.32 1997/06/14 19:30:00 ivan - * Compatibility issues between kernels 2.0.x and - * 2.1.x (mainly related to clear_bit function). - * - * Revision 1.36.4.31 1997/06/03 15:30:00 ivan - * Changes to define the memory window according to the - * board type. - * - * Revision 1.36.4.30 1997/05/16 15:30:00 daniel - * Changes to support new cycladesZ boards. - * - * Revision 1.36.4.29 1997/05/12 11:30:00 daniel - * Merge of Bentson's and Daniel's version 1.36.4.28. - * Corrects bug in cy_detect_pci: check if there are more - * ports than the number of static structs allocated. - * Warning message during initialization if this driver is - * used with the new generation of cycladesZ boards. Those - * will be supported only in next release of the driver. - * Corrects bug in cy_detect_pci and cy_detect_isa that - * returned wrong number of VALID boards, when a cyclomY - * was found with no serial modules connected. - * Changes to use current (2.1.x) kernel subroutine names - * and created macros for compilation with 2.0.x kernel, - * instead of the other way around. - * - * Revision 1.36.4.28 1997/05/?? ??:00:00 bentson - * Change queue_task_irq_off to queue_task_irq. - * The inline function queue_task_irq_off (tqueue.h) - * was removed from latest releases of 2.1.x kernel. - * Use of macro __init to mark the initialization - * routines, so memory can be reused. - * Also incorporate implementation of critical region - * in function cleanup_module() created by anonymous - * linuxer. - * - * Revision 1.36.4.28 1997/04/25 16:00:00 daniel - * Change to support new firmware that solves DCD problem: - * application could fail to receive SIGHUP signal when DCD - * varying too fast. - * - * Revision 1.36.4.27 1997/03/26 10:30:00 daniel - * Changed for support linux versions 2.1.X. - * Backward compatible with linux versions 2.0.X. - * Corrected illegal use of filler field in - * CH_CTRL struct. - * Deleted some debug messages. - * - * Revision 1.36.4.26 1997/02/27 12:00:00 daniel - * Included check for NULL tty pointer in cyz_poll. - * - * Revision 1.36.4.25 1997/02/26 16:28:30 bentson - * Bill Foster at Blarg! Online services noticed that - * some of the switch elements of -Z modem control - * lacked a closing "break;" - * - * Revision 1.36.4.24 1997/02/24 11:00:00 daniel - * Changed low water threshold for buffer xmit_buf - * - * Revision 1.36.4.23 1996/12/02 21:50:16 bentson - * Marcio provided fix to modem status fetch for -Z - * - * Revision 1.36.4.22 1996/10/28 22:41:17 bentson - * improve mapping of -Z control page (thanks to Steve - * Price <stevep@fa.tdktca.com> for help on this) - * - * Revision 1.36.4.21 1996/09/10 17:00:10 bentson - * shift from CPU-bound to memcopy in cyz_polling operation - * - * Revision 1.36.4.20 1996/09/09 18:30:32 Bentson - * Added support to set and report higher speeds. - * - * Revision 1.36.4.19c 1996/08/09 10:00:00 Marcio Saito - * Some fixes in the HW flow control for the BETA release. - * Don't try to register the IRQ. - * - * Revision 1.36.4.19 1996/08/08 16:23:18 Bentson - * make sure "cyc" appears in all kernel messages; all soft interrupts - * handled by same routine; recognize out-of-band reception; comment - * out some diagnostic messages; leave RTS/CTS flow control to hardware; - * fix race condition in -Z buffer management; only -Y needs to explicitly - * flush chars; tidy up some startup messages; - * - * Revision 1.36.4.18 1996/07/25 18:57:31 bentson - * shift MOD_INC_USE_COUNT location to match - * serial.c; purge some diagnostic messages; - * - * Revision 1.36.4.17 1996/07/25 18:01:08 bentson - * enable modem status messages and fetch & process them; note - * time of last activity type for each port; set_line_char now - * supports more than line 0 and treats 0 baud correctly; - * get_modem_info senses rs_status; - * - * Revision 1.36.4.16 1996/07/20 08:43:15 bentson - * barely works--now's time to turn on - * more features 'til it breaks - * - * Revision 1.36.4.15 1996/07/19 22:30:06 bentson - * check more -Z board status; shorten boot message - * - * Revision 1.36.4.14 1996/07/19 22:20:37 bentson - * fix reference to ch_ctrl in startup; verify return - * values from cyz_issue_cmd and cyz_update_channel; - * more stuff to get modem control correct; - * - * Revision 1.36.4.13 1996/07/11 19:53:33 bentson - * more -Z stuff folded in; re-order changes to put -Z stuff - * after -Y stuff (to make changes clearer) - * - * Revision 1.36.4.12 1996/07/11 15:40:55 bentson - * Add code to poll Cyclades-Z. Add code to get & set RS-232 control. - * Add code to send break. Clear firmware ID word at startup (so - * that other code won't talk to inactive board). - * - * Revision 1.36.4.11 1996/07/09 05:28:29 bentson - * add code for -Z in set_line_char - * - * Revision 1.36.4.10 1996/07/08 19:28:37 bentson - * fold more -Z stuff (or in some cases, error messages) - * into driver; add text to "don't know what to do" messages. - * - * Revision 1.36.4.9 1996/07/08 18:38:38 bentson - * moved compile-time flags near top of file; cosmetic changes - * to narrow text (to allow 2-up printing); changed many declarations - * to "static" to limit external symbols; shuffled code order to - * coalesce -Y and -Z specific code, also to put internal functions - * in order of tty_driver structure; added code to recognize -Z - * ports (and for moment, do nothing or report error); add cy_startup - * to parse boot command line for extra base addresses for ISA probes; - * - * Revision 1.36.4.8 1996/06/25 17:40:19 bentson - * reorder some code, fix types of some vars (int vs. long), - * add cy_setup to support user declared ISA addresses - * - * Revision 1.36.4.7 1996/06/21 23:06:18 bentson - * dump ioctl based firmware load (it's now a user level - * program); ensure uninitialzed ports cannot be used - * - * Revision 1.36.4.6 1996/06/20 23:17:19 bentson - * rename vars and restructure some code - * - * Revision 1.36.4.5 1996/06/14 15:09:44 bentson - * get right status back after boot load - * - * Revision 1.36.4.4 1996/06/13 19:51:44 bentson - * successfully loads firmware - * - * Revision 1.36.4.3 1996/06/13 06:08:33 bentson - * add more of the code for the boot/load ioctls - * - * Revision 1.36.4.2 1996/06/11 21:00:51 bentson - * start to add Z functionality--starting with ioctl - * for loading firmware - * - * Revision 1.36.4.1 1996/06/10 18:03:02 bentson - * added code to recognize Z/PCI card at initialization; report - * presence, but card is not initialized (because firmware needs - * to be loaded) - * - * Revision 1.36.3.8 1996/06/07 16:29:00 bentson - * starting minor number at zero; added missing verify_area - * as noted by Heiko Eißfeldt <heiko@colossus.escape.de> - * - * Revision 1.36.3.7 1996/04/19 21:06:18 bentson - * remove unneeded boot message & fix CLOCAL hardware flow - * control (Miquel van Smoorenburg <miquels@Q.cistron.nl>); - * remove unused diagnostic statements; minor 0 is first; - * - * Revision 1.36.3.6 1996/03/13 13:21:17 marcio - * The kernel function vremap (available only in later 1.3.xx kernels) - * allows the access to memory addresses above the RAM. This revision - * of the driver supports PCI boards below 1Mb (device id 0x100) and - * above 1Mb (device id 0x101). - * - * Revision 1.36.3.5 1996/03/07 15:20:17 bentson - * Some global changes to interrupt handling spilled into - * this driver--mostly unused arguments in system function - * calls. Also added change by Marcio Saito which should - * reduce lost interrupts at startup by fast processors. - * - * Revision 1.36.3.4 1995/11/13 20:45:10 bentson - * Changes by Corey Minyard <minyard@wf-rch.cirr.com> distributed - * in 1.3.41 kernel to remove a possible race condition, extend - * some error messages, and let the driver run as a loadable module - * Change by Alan Wendt <alan@ez0.ezlink.com> to remove a - * possible race condition. - * Change by Marcio Saito <marcio@cyclades.com> to fix PCI addressing. - * - * Revision 1.36.3.3 1995/11/13 19:44:48 bentson - * Changes by Linus Torvalds in 1.3.33 kernel distribution - * required due to reordering of driver initialization. - * Drivers are now initialized *after* memory management. - * - * Revision 1.36.3.2 1995/09/08 22:07:14 bentson - * remove printk from ISR; fix typo - * - * Revision 1.36.3.1 1995/09/01 12:00:42 marcio - * Minor fixes in the PCI board support. PCI function calls in - * conditional compilation (CONFIG_PCI). Thanks to Jim Duncan - * <duncan@okay.com>. "bad serial count" message removed. - * - * Revision 1.36.3 1995/08/22 09:19:42 marcio - * Cyclom-Y/PCI support added. Changes in the cy_init routine and - * board initialization. Changes in the boot messages. The driver - * supports up to 4 boards and 64 ports by default. - * - * Revision 1.36.1.4 1995/03/29 06:14:14 bentson - * disambiguate between Cyclom-16Y and Cyclom-32Ye; - * - * Revision 1.36.1.3 1995/03/23 22:15:35 bentson - * add missing break in modem control block in ioctl switch statement - * (discovered by Michael Edward Chastain <mec@jobe.shell.portal.com>); - * - * Revision 1.36.1.2 1995/03/22 19:16:22 bentson - * make sure CTS flow control is set as soon as possible (thanks - * to note from David Lambert <lambert@chesapeake.rps.slb.com>); - * - * Revision 1.36.1.1 1995/03/13 15:44:43 bentson - * initialize defaults for receive threshold and stale data timeout; - * cosmetic changes; - * - * Revision 1.36 1995/03/10 23:33:53 bentson - * added support of chips 4-7 in 32 port Cyclom-Ye; - * fix cy_interrupt pointer dereference problem - * (Joe Portman <baron@aa.net>); - * give better error response if open is attempted on non-existent port - * (Zachariah Vaum <jchryslr@netcom.com>); - * correct command timeout (Kenneth Lerman <lerman@@seltd.newnet.com>); - * conditional compilation for -16Y on systems with fast, noisy bus; - * comment out diagnostic print function; - * cleaned up table of base addresses; - * set receiver time-out period register to correct value, - * set receive threshold to better default values, - * set chip timer to more accurate 200 Hz ticking, - * add code to monitor and modify receive parameters - * (Rik Faith <faith@cs.unc.edu> Nick Simicich - * <njs@scifi.emi.net>); - * - * Revision 1.35 1994/12/16 13:54:18 steffen - * additional patch by Marcio Saito for board detection - * Accidently left out in 1.34 - * - * Revision 1.34 1994/12/10 12:37:12 steffen - * This is the corrected version as suggested by Marcio Saito - * - * Revision 1.33 1994/12/01 22:41:18 bentson - * add hooks to support more high speeds directly; add tytso - * patch regarding CLOCAL wakeups - * - * Revision 1.32 1994/11/23 19:50:04 bentson - * allow direct kernel control of higher signalling rates; - * look for cards at additional locations - * - * Revision 1.31 1994/11/16 04:33:28 bentson - * ANOTHER fix from Corey Minyard, minyard@wf-rch.cirr.com-- - * a problem in chars_in_buffer has been resolved by some - * small changes; this should yield smoother output - * - * Revision 1.30 1994/11/16 04:28:05 bentson - * Fix from Corey Minyard, Internet: minyard@metronet.com, - * UUCP: minyard@wf-rch.cirr.com, WORK: minyardbnr.ca, to - * cy_hangup that appears to clear up much (all?) of the - * DTR glitches; also he's added/cleaned-up diagnostic messages - * - * Revision 1.29 1994/11/16 04:16:07 bentson - * add change proposed by Ralph Sims, ralphs@halcyon.com, to - * operate higher speeds in same way as other serial ports; - * add more serial ports (for up to two 16-port muxes). - * - * Revision 1.28 1994/11/04 00:13:16 root - * turn off diagnostic messages - * - * Revision 1.27 1994/11/03 23:46:37 root - * bunch of changes to bring driver into greater conformance - * with the serial.c driver (looking for missed fixes) - * - * Revision 1.26 1994/11/03 22:40:36 root - * automatic interrupt probing fixed. - * - * Revision 1.25 1994/11/03 20:17:02 root - * start to implement auto-irq - * - * Revision 1.24 1994/11/03 18:01:55 root - * still working on modem signals--trying not to drop DTR - * during the getty/login processes - * - * Revision 1.23 1994/11/03 17:51:36 root - * extend baud rate support; set receive threshold as function - * of baud rate; fix some problems with RTS/CTS; - * - * Revision 1.22 1994/11/02 18:05:35 root - * changed arguments to udelay to type long to get - * delays to be of correct duration - * - * Revision 1.21 1994/11/02 17:37:30 root - * employ udelay (after calibrating loops_per_second earlier - * in init/main.c) instead of using home-grown delay routines - * - * Revision 1.20 1994/11/02 03:11:38 root - * cy_chars_in_buffer forces a return value of 0 to let - * login work (don't know why it does); some functions - * that were returning EFAULT, now executes the code; - * more work on deciding when to disable xmit interrupts; - * - * Revision 1.19 1994/11/01 20:10:14 root - * define routine to start transmission interrupts (by enabling - * transmit interrupts); directly enable/disable modem interrupts; - * - * Revision 1.18 1994/11/01 18:40:45 bentson - * Don't always enable transmit interrupts in startup; interrupt on - * TxMpty instead of TxRdy to help characters get out before shutdown; - * restructure xmit interrupt to check for chars first and quit if - * none are ready to go; modem status (MXVRx) is upright, _not_ inverted - * (to my view); - * - * Revision 1.17 1994/10/30 04:39:45 bentson - * rename serial_driver and callout_driver to cy_serial_driver and - * cy_callout_driver to avoid linkage interference; initialize - * info->type to PORT_CIRRUS; ruggedize paranoia test; elide ->port - * from cyclades_port structure; add paranoia check to cy_close; - * - * Revision 1.16 1994/10/30 01:14:33 bentson - * change major numbers; add some _early_ return statements; - * - * Revision 1.15 1994/10/29 06:43:15 bentson - * final tidying up for clean compile; enable some error reporting - * - * Revision 1.14 1994/10/28 20:30:22 Bentson - * lots of changes to drag the driver towards the new tty_io - * structures and operation. not expected to work, but may - * compile cleanly. - * - * Revision 1.13 1994/07/21 23:08:57 Bentson - * add some diagnostic cruft; support 24 lines (for testing - * both -8Y and -16Y cards; be more thorough in servicing all - * chips during interrupt; add "volatile" a few places to - * circumvent compiler optimizations; fix base & offset - * computations in block_til_ready (was causing chip 0 to - * stop operation) - * - * Revision 1.12 1994/07/19 16:42:11 Bentson - * add some hackery for kernel version 1.1.8; expand - * error messages; refine timing for delay loops and - * declare loop params volatile - * - * Revision 1.11 1994/06/11 21:53:10 bentson - * get use of save_car right in transmit interrupt service - * - * Revision 1.10.1.1 1994/06/11 21:31:18 bentson - * add some diagnostic printing; try to fix save_car stuff - * - * Revision 1.10 1994/06/11 20:36:08 bentson - * clean up compiler warnings - * - * Revision 1.9 1994/06/11 19:42:46 bentson - * added a bunch of code to support modem signalling - * - * Revision 1.8 1994/06/11 17:57:07 bentson - * recognize break & parity error - * - * Revision 1.7 1994/06/05 05:51:34 bentson - * Reorder baud table to be monotonic; add cli to CP; discard - * incoming characters and status if the line isn't open; start to - * fold code into cy_throttle; start to port get_serial_info, - * set_serial_info, get_modem_info, set_modem_info, and send_break - * from serial.c; expand cy_ioctl; relocate and expand config_setup; - * get flow control characters from tty struct; invalidate ports w/o - * hardware; - * - * Revision 1.6 1994/05/31 18:42:21 bentson - * add a loop-breaker in the interrupt service routine; - * note when port is initialized so that it can be shut - * down under the right conditions; receive works without - * any obvious errors - * - * Revision 1.5 1994/05/30 00:55:02 bentson - * transmit works without obvious errors - * - * Revision 1.4 1994/05/27 18:46:27 bentson - * incorporated more code from lib_y.c; can now print short - * strings under interrupt control to port zero; seems to - * select ports/channels/lines correctly - * - * Revision 1.3 1994/05/25 22:12:44 bentson - * shifting from multi-port on a card to proper multiplexor - * data structures; added skeletons of most routines - * - * Revision 1.2 1994/05/19 13:21:43 bentson - * start to crib from other sources - * */ -#define CY_VERSION "2.5" +#define CY_VERSION "2.6" /* If you need to install more boards than NR_CARDS, change the constant in the definition below. No other change is necessary to support up to @@ -648,9 +80,7 @@ #include <linux/firmware.h> #include <linux/device.h> -#include <asm/system.h> #include <linux/io.h> -#include <asm/irq.h> #include <linux/uaccess.h> #include <linux/kernel.h> @@ -660,13 +90,11 @@ #include <linux/proc_fs.h> #include <linux/seq_file.h> -static void cy_throttle(struct tty_struct *tty); static void cy_send_xchar(struct tty_struct *tty, char ch); #ifndef SERIAL_XMIT_SIZE #define SERIAL_XMIT_SIZE (min(PAGE_SIZE, 4096)) #endif -#define WAKEUP_CHARS 256 #define STD_COM_FLAGS (0) @@ -756,25 +184,25 @@ static int cy_next_channel; /* next minor available */ * HI VHI * 20 */ -static int baud_table[] = { +static const int baud_table[] = { 0, 50, 75, 110, 134, 150, 200, 300, 600, 1200, 1800, 2400, 4800, 9600, 19200, 38400, 57600, 76800, 115200, 150000, 230400, 0 }; -static char baud_co_25[] = { /* 25 MHz clock option table */ +static const char baud_co_25[] = { /* 25 MHz clock option table */ /* value => 00 01 02 03 04 */ /* divide by 8 32 128 512 2048 */ 0x00, 0x04, 0x04, 0x04, 0x04, 0x04, 0x03, 0x03, 0x03, 0x02, 0x02, 0x02, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; -static char baud_bpr_25[] = { /* 25 MHz baud rate period table */ +static const char baud_bpr_25[] = { /* 25 MHz baud rate period table */ 0x00, 0xf5, 0xa3, 0x6f, 0x5c, 0x51, 0xf5, 0xa3, 0x51, 0xa3, 0x6d, 0x51, 0xa3, 0x51, 0xa3, 0x51, 0x36, 0x29, 0x1b, 0x15 }; -static char baud_co_60[] = { /* 60 MHz clock option table (CD1400 J) */ +static const char baud_co_60[] = { /* 60 MHz clock option table (CD1400 J) */ /* value => 00 01 02 03 04 */ /* divide by 8 32 128 512 2048 */ 0x00, 0x00, 0x00, 0x04, 0x04, 0x04, 0x04, 0x04, 0x03, 0x03, @@ -782,13 +210,13 @@ static char baud_co_60[] = { /* 60 MHz clock option table (CD1400 J) */ 0x00 }; -static char baud_bpr_60[] = { /* 60 MHz baud rate period table (CD1400 J) */ +static const char baud_bpr_60[] = { /* 60 MHz baud rate period table (CD1400 J) */ 0x00, 0x82, 0x21, 0xff, 0xdb, 0xc3, 0x92, 0x62, 0xc3, 0x62, 0x41, 0xc3, 0x62, 0xc3, 0x62, 0xc3, 0x82, 0x62, 0x41, 0x32, 0x21 }; -static char baud_cor3[] = { /* receive threshold */ +static const char baud_cor3[] = { /* receive threshold */ 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x09, 0x09, 0x08, 0x08, 0x08, 0x08, 0x07, 0x07 @@ -805,7 +233,7 @@ static char baud_cor3[] = { /* receive threshold */ * cables. */ -static char rflow_thr[] = { /* rflow threshold */ +static const char rflow_thr[] = { /* rflow threshold */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a @@ -814,7 +242,7 @@ static char rflow_thr[] = { /* rflow threshold */ /* The Cyclom-Ye has placed the sequential chips in non-sequential * address order. This look-up table overcomes that problem. */ -static int cy_chip_offset[] = { 0x0000, +static const unsigned int cy_chip_offset[] = { 0x0000, 0x0400, 0x0800, 0x0C00, @@ -827,7 +255,7 @@ static int cy_chip_offset[] = { 0x0000, /* PCI related definitions */ #ifdef CONFIG_PCI -static struct pci_device_id cy_pci_dev_id[] __devinitdata = { +static const struct pci_device_id cy_pci_dev_id[] = { /* PCI < 1Mb */ { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_Y_Lo) }, /* PCI > 1Mb */ @@ -850,7 +278,7 @@ MODULE_DEVICE_TABLE(pci, cy_pci_dev_id); #endif static void cy_start(struct tty_struct *); -static void set_line_char(struct cyclades_port *); +static void cy_set_line_char(struct cyclades_port *, struct tty_struct *); static int cyz_issue_cmd(struct cyclades_card *, __u32, __u8, __u32); #ifdef CONFIG_ISA static unsigned detect_isa_irq(void __iomem *); @@ -869,6 +297,20 @@ static void cyz_rx_restart(unsigned long); static struct timer_list cyz_rx_full_timer[NR_PORTS]; #endif /* CONFIG_CYZ_INTR */ +static inline void cyy_writeb(struct cyclades_port *port, u32 reg, u8 val) +{ + struct cyclades_card *card = port->card; + + cy_writeb(port->u.cyy.base_addr + (reg << card->bus_index), val); +} + +static inline u8 cyy_readb(struct cyclades_port *port, u32 reg) +{ + struct cyclades_card *card = port->card; + + return readb(port->u.cyy.base_addr + (reg << card->bus_index)); +} + static inline bool cy_is_Z(struct cyclades_card *card) { return card->num_chips == (unsigned int)-1; @@ -893,7 +335,7 @@ static inline bool cyz_is_loaded(struct cyclades_card *card) } static inline int serial_paranoia_check(struct cyclades_port *info, - char *name, const char *routine) + const char *name, const char *routine) { #ifdef SERIAL_PARANOIA_CHECK if (!info) { @@ -909,7 +351,7 @@ static inline int serial_paranoia_check(struct cyclades_port *info, } #endif return 0; -} /* serial_paranoia_check */ +} /***********************************************************/ /********* Start of block of Cyclom-Y specific code ********/ @@ -921,13 +363,14 @@ static inline int serial_paranoia_check(struct cyclades_port *info, This function is only called from inside spinlock-protected code. */ -static int cyy_issue_cmd(void __iomem *base_addr, u_char cmd, int index) +static int __cyy_issue_cmd(void __iomem *base_addr, u8 cmd, int index) { + void __iomem *ccr = base_addr + (CyCCR << index); unsigned int i; /* Check to see that the previous command has completed */ for (i = 0; i < 100; i++) { - if (readb(base_addr + (CyCCR << index)) == 0) + if (readb(ccr) == 0) break; udelay(10L); } @@ -937,10 +380,16 @@ static int cyy_issue_cmd(void __iomem *base_addr, u_char cmd, int index) return -1; /* Issue the new command */ - cy_writeb(base_addr + (CyCCR << index), cmd); + cy_writeb(ccr, cmd); return 0; -} /* cyy_issue_cmd */ +} + +static inline int cyy_issue_cmd(struct cyclades_port *port, u8 cmd) +{ + return __cyy_issue_cmd(port->u.cyy.base_addr, cmd, + port->card->bus_index); +} #ifdef CONFIG_ISA /* ISA interrupt detection code */ @@ -960,12 +409,12 @@ static unsigned detect_isa_irq(void __iomem *address) irqs = probe_irq_on(); /* Wait ... */ - udelay(5000L); + msleep(5); /* Enable the Tx interrupts on the CD1400 */ local_irq_save(flags); cy_writeb(address + (CyCAR << index), 0); - cyy_issue_cmd(address, CyCHAN_CTL | CyENB_XMTR, index); + __cyy_issue_cmd(address, CyCHAN_CTL | CyENB_XMTR, index); cy_writeb(address + (CyCAR << index), 0); cy_writeb(address + (CySRER << index), @@ -973,7 +422,7 @@ static unsigned detect_isa_irq(void __iomem *address) local_irq_restore(flags); /* Wait ... */ - udelay(5000L); + msleep(5); /* Check which interrupt is in use */ irq = probe_irq_off(irqs); @@ -999,7 +448,7 @@ static void cyy_chip_rx(struct cyclades_card *cinfo, int chip, struct cyclades_port *info; struct tty_struct *tty; int len, index = cinfo->bus_index; - u8 save_xir, channel, save_car, data, char_count; + u8 ivr, save_xir, channel, save_car, data, char_count; #ifdef CY_DEBUG_INTERRUPTS printk(KERN_DEBUG "cyy_interrupt: rcvd intr, chip %d\n", chip); @@ -1008,26 +457,25 @@ static void cyy_chip_rx(struct cyclades_card *cinfo, int chip, save_xir = readb(base_addr + (CyRIR << index)); channel = save_xir & CyIRChannel; info = &cinfo->ports[channel + chip * 4]; - save_car = readb(base_addr + (CyCAR << index)); - cy_writeb(base_addr + (CyCAR << index), save_xir); + save_car = cyy_readb(info, CyCAR); + cyy_writeb(info, CyCAR, save_xir); + ivr = cyy_readb(info, CyRIVR) & CyIVRMask; + tty = tty_port_tty_get(&info->port); /* if there is nowhere to put the data, discard it */ - if (info->port.tty == NULL) { - if ((readb(base_addr + (CyRIVR << index)) & CyIVRMask) == - CyIVRRxEx) { /* exception */ - data = readb(base_addr + (CyRDSR << index)); + if (tty == NULL) { + if (ivr == CyIVRRxEx) { /* exception */ + data = cyy_readb(info, CyRDSR); } else { /* normal character reception */ - char_count = readb(base_addr + (CyRDCR << index)); + char_count = cyy_readb(info, CyRDCR); while (char_count--) - data = readb(base_addr + (CyRDSR << index)); + data = cyy_readb(info, CyRDSR); } goto end; } /* there is an open port for this data */ - tty = info->port.tty; - if ((readb(base_addr + (CyRIVR << index)) & CyIVRMask) == - CyIVRRxEx) { /* exception */ - data = readb(base_addr + (CyRDSR << index)); + if (ivr == CyIVRRxEx) { /* exception */ + data = cyy_readb(info, CyRDSR); /* For statistics only */ if (data & CyBREAK) @@ -1041,28 +489,29 @@ static void cyy_chip_rx(struct cyclades_card *cinfo, int chip, if (data & info->ignore_status_mask) { info->icount.rx++; + tty_kref_put(tty); return; } if (tty_buffer_request_room(tty, 1)) { if (data & info->read_status_mask) { if (data & CyBREAK) { tty_insert_flip_char(tty, - readb(base_addr + (CyRDSR << - index)), TTY_BREAK); + cyy_readb(info, CyRDSR), + TTY_BREAK); info->icount.rx++; if (info->port.flags & ASYNC_SAK) do_SAK(tty); } else if (data & CyFRAME) { tty_insert_flip_char(tty, - readb(base_addr + (CyRDSR << - index)), TTY_FRAME); + cyy_readb(info, CyRDSR), + TTY_FRAME); info->icount.rx++; info->idle_stats.frame_errs++; } else if (data & CyPARITY) { /* Pieces of seven... */ tty_insert_flip_char(tty, - readb(base_addr + (CyRDSR << - index)), TTY_PARITY); + cyy_readb(info, CyRDSR), + TTY_PARITY); info->icount.rx++; info->idle_stats.parity_errs++; } else if (data & CyOVERRUN) { @@ -1074,8 +523,8 @@ static void cyy_chip_rx(struct cyclades_card *cinfo, int chip, the next incoming character. */ tty_insert_flip_char(tty, - readb(base_addr + (CyRDSR << - index)), TTY_FRAME); + cyy_readb(info, CyRDSR), + TTY_FRAME); info->icount.rx++; info->idle_stats.overruns++; /* These two conditions may imply */ @@ -1099,7 +548,7 @@ static void cyy_chip_rx(struct cyclades_card *cinfo, int chip, } } else { /* normal character reception */ /* load # chars available from the chip */ - char_count = readb(base_addr + (CyRDCR << index)); + char_count = cyy_readb(info, CyRDCR); #ifdef CY_ENABLE_MONITORING ++info->mon.int_count; @@ -1110,7 +559,7 @@ static void cyy_chip_rx(struct cyclades_card *cinfo, int chip, #endif len = tty_buffer_request_room(tty, char_count); while (len--) { - data = readb(base_addr + (CyRDSR << index)); + data = cyy_readb(info, CyRDSR); tty_insert_flip_char(tty, data, TTY_NORMAL); info->idle_stats.recv_bytes++; info->icount.rx++; @@ -1121,16 +570,18 @@ static void cyy_chip_rx(struct cyclades_card *cinfo, int chip, info->idle_stats.recv_idle = jiffies; } tty_schedule_flip(tty); + tty_kref_put(tty); end: /* end of service */ - cy_writeb(base_addr + (CyRIR << index), save_xir & 0x3f); - cy_writeb(base_addr + (CyCAR << index), save_car); + cyy_writeb(info, CyRIR, save_xir & 0x3f); + cyy_writeb(info, CyCAR, save_car); } static void cyy_chip_tx(struct cyclades_card *cinfo, unsigned int chip, void __iomem *base_addr) { struct cyclades_port *info; + struct tty_struct *tty; int char_count, index = cinfo->bus_index; u8 save_xir, channel, save_car, outch; @@ -1154,9 +605,9 @@ static void cyy_chip_tx(struct cyclades_card *cinfo, unsigned int chip, goto end; } info = &cinfo->ports[channel + chip * 4]; - if (info->port.tty == NULL) { - cy_writeb(base_addr + (CySRER << index), - readb(base_addr + (CySRER << index)) & ~CyTxRdy); + tty = tty_port_tty_get(&info->port); + if (tty == NULL) { + cyy_writeb(info, CySRER, cyy_readb(info, CySRER) & ~CyTxRdy); goto end; } @@ -1165,7 +616,7 @@ static void cyy_chip_tx(struct cyclades_card *cinfo, unsigned int chip, if (info->x_char) { /* send special char */ outch = info->x_char; - cy_writeb(base_addr + (CyTDR << index), outch); + cyy_writeb(info, CyTDR, outch); char_count--; info->icount.tx++; info->x_char = 0; @@ -1173,14 +624,14 @@ static void cyy_chip_tx(struct cyclades_card *cinfo, unsigned int chip, if (info->breakon || info->breakoff) { if (info->breakon) { - cy_writeb(base_addr + (CyTDR << index), 0); - cy_writeb(base_addr + (CyTDR << index), 0x81); + cyy_writeb(info, CyTDR, 0); + cyy_writeb(info, CyTDR, 0x81); info->breakon = 0; char_count -= 2; } if (info->breakoff) { - cy_writeb(base_addr + (CyTDR << index), 0); - cy_writeb(base_addr + (CyTDR << index), 0x83); + cyy_writeb(info, CyTDR, 0); + cyy_writeb(info, CyTDR, 0x83); info->breakoff = 0; char_count -= 2; } @@ -1188,27 +639,23 @@ static void cyy_chip_tx(struct cyclades_card *cinfo, unsigned int chip, while (char_count-- > 0) { if (!info->xmit_cnt) { - if (readb(base_addr + (CySRER << index)) & CyTxMpty) { - cy_writeb(base_addr + (CySRER << index), - readb(base_addr + (CySRER << index)) & - ~CyTxMpty); + if (cyy_readb(info, CySRER) & CyTxMpty) { + cyy_writeb(info, CySRER, + cyy_readb(info, CySRER) & ~CyTxMpty); } else { - cy_writeb(base_addr + (CySRER << index), - (readb(base_addr + (CySRER << index)) & - ~CyTxRdy) | CyTxMpty); + cyy_writeb(info, CySRER, CyTxMpty | + (cyy_readb(info, CySRER) & ~CyTxRdy)); } goto done; } if (info->port.xmit_buf == NULL) { - cy_writeb(base_addr + (CySRER << index), - readb(base_addr + (CySRER << index)) & - ~CyTxRdy); + cyy_writeb(info, CySRER, + cyy_readb(info, CySRER) & ~CyTxRdy); goto done; } - if (info->port.tty->stopped || info->port.tty->hw_stopped) { - cy_writeb(base_addr + (CySRER << index), - readb(base_addr + (CySRER << index)) & - ~CyTxRdy); + if (tty->stopped || tty->hw_stopped) { + cyy_writeb(info, CySRER, + cyy_readb(info, CySRER) & ~CyTxRdy); goto done; } /* Because the Embedded Transmit Commands have been enabled, @@ -1225,15 +672,15 @@ static void cyy_chip_tx(struct cyclades_card *cinfo, unsigned int chip, info->xmit_cnt--; info->xmit_tail = (info->xmit_tail + 1) & (SERIAL_XMIT_SIZE - 1); - cy_writeb(base_addr + (CyTDR << index), outch); + cyy_writeb(info, CyTDR, outch); info->icount.tx++; } else { if (char_count > 1) { info->xmit_cnt--; info->xmit_tail = (info->xmit_tail + 1) & (SERIAL_XMIT_SIZE - 1); - cy_writeb(base_addr + (CyTDR << index), outch); - cy_writeb(base_addr + (CyTDR << index), 0); + cyy_writeb(info, CyTDR, outch); + cyy_writeb(info, CyTDR, 0); info->icount.tx++; char_count--; } @@ -1241,17 +688,19 @@ static void cyy_chip_tx(struct cyclades_card *cinfo, unsigned int chip, } done: - tty_wakeup(info->port.tty); + tty_wakeup(tty); + tty_kref_put(tty); end: /* end of service */ - cy_writeb(base_addr + (CyTIR << index), save_xir & 0x3f); - cy_writeb(base_addr + (CyCAR << index), save_car); + cyy_writeb(info, CyTIR, save_xir & 0x3f); + cyy_writeb(info, CyCAR, save_car); } static void cyy_chip_modem(struct cyclades_card *cinfo, int chip, void __iomem *base_addr) { struct cyclades_port *info; + struct tty_struct *tty; int index = cinfo->bus_index; u8 save_xir, channel, save_car, mdm_change, mdm_status; @@ -1259,13 +708,14 @@ static void cyy_chip_modem(struct cyclades_card *cinfo, int chip, save_xir = readb(base_addr + (CyMIR << index)); channel = save_xir & CyIRChannel; info = &cinfo->ports[channel + chip * 4]; - save_car = readb(base_addr + (CyCAR << index)); - cy_writeb(base_addr + (CyCAR << index), save_xir); + save_car = cyy_readb(info, CyCAR); + cyy_writeb(info, CyCAR, save_xir); - mdm_change = readb(base_addr + (CyMISR << index)); - mdm_status = readb(base_addr + (CyMSVR1 << index)); + mdm_change = cyy_readb(info, CyMISR); + mdm_status = cyy_readb(info, CyMSVR1); - if (!info->port.tty) + tty = tty_port_tty_get(&info->port); + if (!tty) goto end; if (mdm_change & CyANY_DELTA) { @@ -1279,35 +729,32 @@ static void cyy_chip_modem(struct cyclades_card *cinfo, int chip, if (mdm_change & CyRI) info->icount.rng++; - wake_up_interruptible(&info->delta_msr_wait); + wake_up_interruptible(&info->port.delta_msr_wait); } if ((mdm_change & CyDCD) && (info->port.flags & ASYNC_CHECK_CD)) { - if (!(mdm_status & CyDCD)) { - tty_hangup(info->port.tty); - info->port.flags &= ~ASYNC_NORMAL_ACTIVE; - } - wake_up_interruptible(&info->port.open_wait); + if (mdm_status & CyDCD) + wake_up_interruptible(&info->port.open_wait); + else + tty_hangup(tty); } if ((mdm_change & CyCTS) && (info->port.flags & ASYNC_CTS_FLOW)) { - if (info->port.tty->hw_stopped) { + if (tty->hw_stopped) { if (mdm_status & CyCTS) { /* cy_start isn't used because... !!! */ - info->port.tty->hw_stopped = 0; - cy_writeb(base_addr + (CySRER << index), - readb(base_addr + (CySRER << index)) | - CyTxRdy); - tty_wakeup(info->port.tty); + tty->hw_stopped = 0; + cyy_writeb(info, CySRER, + cyy_readb(info, CySRER) | CyTxRdy); + tty_wakeup(tty); } } else { if (!(mdm_status & CyCTS)) { /* cy_stop isn't used because ... !!! */ - info->port.tty->hw_stopped = 1; - cy_writeb(base_addr + (CySRER << index), - readb(base_addr + (CySRER << index)) & - ~CyTxRdy); + tty->hw_stopped = 1; + cyy_writeb(info, CySRER, + cyy_readb(info, CySRER) & ~CyTxRdy); } } } @@ -1315,10 +762,11 @@ static void cyy_chip_modem(struct cyclades_card *cinfo, int chip, } if (mdm_change & CyRI) { }*/ + tty_kref_put(tty); end: /* end of service */ - cy_writeb(base_addr + (CyMIR << index), save_xir & 0x3f); - cy_writeb(base_addr + (CyCAR << index), save_car); + cyy_writeb(info, CyMIR, save_xir & 0x3f); + cyy_writeb(info, CyCAR, save_car); } /* The real interrupt service routine is called @@ -1389,6 +837,56 @@ static irqreturn_t cyy_interrupt(int irq, void *dev_id) return IRQ_HANDLED; } /* cyy_interrupt */ +static void cyy_change_rts_dtr(struct cyclades_port *info, unsigned int set, + unsigned int clear) +{ + struct cyclades_card *card = info->card; + int channel = info->line - card->first_line; + u32 rts, dtr, msvrr, msvrd; + + channel &= 0x03; + + if (info->rtsdtr_inv) { + msvrr = CyMSVR2; + msvrd = CyMSVR1; + rts = CyDTR; + dtr = CyRTS; + } else { + msvrr = CyMSVR1; + msvrd = CyMSVR2; + rts = CyRTS; + dtr = CyDTR; + } + if (set & TIOCM_RTS) { + cyy_writeb(info, CyCAR, channel); + cyy_writeb(info, msvrr, rts); + } + if (clear & TIOCM_RTS) { + cyy_writeb(info, CyCAR, channel); + cyy_writeb(info, msvrr, ~rts); + } + if (set & TIOCM_DTR) { + cyy_writeb(info, CyCAR, channel); + cyy_writeb(info, msvrd, dtr); +#ifdef CY_DEBUG_DTR + printk(KERN_DEBUG "cyc:set_modem_info raising DTR\n"); + printk(KERN_DEBUG " status: 0x%x, 0x%x\n", + cyy_readb(info, CyMSVR1), + cyy_readb(info, CyMSVR2)); +#endif + } + if (clear & TIOCM_DTR) { + cyy_writeb(info, CyCAR, channel); + cyy_writeb(info, msvrd, ~dtr); +#ifdef CY_DEBUG_DTR + printk(KERN_DEBUG "cyc:set_modem_info dropping DTR\n"); + printk(KERN_DEBUG " status: 0x%x, 0x%x\n", + cyy_readb(info, CyMSVR1), + cyy_readb(info, CyMSVR2)); +#endif + } +} + /***********************************************************/ /********* End of block of Cyclom-Y specific code **********/ /******** Start of block of Cyclades-Z specific code *******/ @@ -1398,15 +896,9 @@ static int cyz_fetch_msg(struct cyclades_card *cinfo, __u32 *channel, __u8 *cmd, __u32 *param) { - struct FIRM_ID __iomem *firm_id; - struct ZFW_CTRL __iomem *zfw_ctrl; - struct BOARD_CTRL __iomem *board_ctrl; + struct BOARD_CTRL __iomem *board_ctrl = cinfo->board_ctrl; unsigned long loc_doorbell; - firm_id = cinfo->base_addr + ID_ADDRESS; - zfw_ctrl = cinfo->base_addr + (readl(&firm_id->zfwctrl_addr) & 0xfffff); - board_ctrl = &zfw_ctrl->board_ctrl; - loc_doorbell = readl(&cinfo->ctl_addr.p9060->loc_doorbell); if (loc_doorbell) { *cmd = (char)(0xff & loc_doorbell); @@ -1422,19 +914,13 @@ static int cyz_issue_cmd(struct cyclades_card *cinfo, __u32 channel, __u8 cmd, __u32 param) { - struct FIRM_ID __iomem *firm_id; - struct ZFW_CTRL __iomem *zfw_ctrl; - struct BOARD_CTRL __iomem *board_ctrl; + struct BOARD_CTRL __iomem *board_ctrl = cinfo->board_ctrl; __u32 __iomem *pci_doorbell; unsigned int index; - firm_id = cinfo->base_addr + ID_ADDRESS; if (!cyz_is_loaded(cinfo)) return -1; - zfw_ctrl = cinfo->base_addr + (readl(&firm_id->zfwctrl_addr) & 0xfffff); - board_ctrl = &zfw_ctrl->board_ctrl; - index = 0; pci_doorbell = &cinfo->ctl_addr.p9060->pci_doorbell; while ((readl(pci_doorbell) & 0xff) != 0) { @@ -1449,11 +935,10 @@ cyz_issue_cmd(struct cyclades_card *cinfo, return 0; } /* cyz_issue_cmd */ -static void cyz_handle_rx(struct cyclades_port *info, - struct BUF_CTRL __iomem *buf_ctrl) +static void cyz_handle_rx(struct cyclades_port *info, struct tty_struct *tty) { + struct BUF_CTRL __iomem *buf_ctrl = info->u.cyz.buf_ctrl; struct cyclades_card *cinfo = info->card; - struct tty_struct *tty = info->port.tty; unsigned int char_count; int len; #ifdef BLOCKMOVE @@ -1542,11 +1027,10 @@ static void cyz_handle_rx(struct cyclades_port *info, } } -static void cyz_handle_tx(struct cyclades_port *info, - struct BUF_CTRL __iomem *buf_ctrl) +static void cyz_handle_tx(struct cyclades_port *info, struct tty_struct *tty) { + struct BUF_CTRL __iomem *buf_ctrl = info->u.cyz.buf_ctrl; struct cyclades_card *cinfo = info->card; - struct tty_struct *tty = info->port.tty; u8 data; unsigned int char_count; #ifdef BLOCKMOVE @@ -1621,34 +1105,24 @@ ztxdone: static void cyz_handle_cmd(struct cyclades_card *cinfo) { + struct BOARD_CTRL __iomem *board_ctrl = cinfo->board_ctrl; struct tty_struct *tty; struct cyclades_port *info; - static struct FIRM_ID __iomem *firm_id; - static struct ZFW_CTRL __iomem *zfw_ctrl; - static struct BOARD_CTRL __iomem *board_ctrl; - static struct CH_CTRL __iomem *ch_ctrl; - static struct BUF_CTRL __iomem *buf_ctrl; __u32 channel, param, fw_ver; __u8 cmd; int special_count; int delta_count; - firm_id = cinfo->base_addr + ID_ADDRESS; - zfw_ctrl = cinfo->base_addr + (readl(&firm_id->zfwctrl_addr) & 0xfffff); - board_ctrl = &zfw_ctrl->board_ctrl; fw_ver = readl(&board_ctrl->fw_version); while (cyz_fetch_msg(cinfo, &channel, &cmd, ¶m) == 1) { special_count = 0; delta_count = 0; info = &cinfo->ports[channel]; - tty = info->port.tty; + tty = tty_port_tty_get(&info->port); if (tty == NULL) continue; - ch_ctrl = &(zfw_ctrl->ch_ctrl[channel]); - buf_ctrl = &(zfw_ctrl->buf_ctrl[channel]); - switch (cmd) { case C_CM_PR_ERROR: tty_insert_flip_char(tty, 0, TTY_PARITY); @@ -1669,15 +1143,12 @@ static void cyz_handle_cmd(struct cyclades_card *cinfo) info->icount.dcd++; delta_count++; if (info->port.flags & ASYNC_CHECK_CD) { - if ((fw_ver > 241 ? ((u_long) param) : - readl(&ch_ctrl->rs_status)) & - C_RS_DCD) { + u32 dcd = fw_ver > 241 ? param : + readl(&info->u.cyz.ch_ctrl->rs_status); + if (dcd & C_RS_DCD) wake_up_interruptible(&info->port.open_wait); - } else { - tty_hangup(info->port.tty); - wake_up_interruptible(&info->port.open_wait); - info->port.flags &= ~ASYNC_NORMAL_ACTIVE; - } + else + tty_hangup(tty); } break; case C_CM_MCTS: @@ -1706,7 +1177,7 @@ static void cyz_handle_cmd(struct cyclades_card *cinfo) printk(KERN_DEBUG "cyz_interrupt: rcvd intr, card %d, " "port %ld\n", info->card, channel); #endif - cyz_handle_rx(info, buf_ctrl); + cyz_handle_rx(info, tty); break; case C_CM_TXBEMPTY: case C_CM_TXLOWWM: @@ -1716,7 +1187,7 @@ static void cyz_handle_cmd(struct cyclades_card *cinfo) printk(KERN_DEBUG "cyz_interrupt: xmit intr, card %d, " "port %ld\n", info->card, channel); #endif - cyz_handle_tx(info, buf_ctrl); + cyz_handle_tx(info, tty); break; #endif /* CONFIG_CYZ_INTR */ case C_CM_FATAL: @@ -1726,9 +1197,10 @@ static void cyz_handle_cmd(struct cyclades_card *cinfo) break; } if (delta_count) - wake_up_interruptible(&info->delta_msr_wait); + wake_up_interruptible(&info->port.delta_msr_wait); if (special_count) tty_schedule_flip(tty); + tty_kref_put(tty); } } @@ -1774,10 +1246,6 @@ static void cyz_poll(unsigned long arg) { struct cyclades_card *cinfo; struct cyclades_port *info; - struct tty_struct *tty; - struct FIRM_ID __iomem *firm_id; - struct ZFW_CTRL __iomem *zfw_ctrl; - struct BUF_CTRL __iomem *buf_ctrl; unsigned long expires = jiffies + HZ; unsigned int port, card; @@ -1789,10 +1257,6 @@ static void cyz_poll(unsigned long arg) if (!cyz_is_loaded(cinfo)) continue; - firm_id = cinfo->base_addr + ID_ADDRESS; - zfw_ctrl = cinfo->base_addr + - (readl(&firm_id->zfwctrl_addr) & 0xfffff); - /* Skip first polling cycle to avoid racing conditions with the FW */ if (!cinfo->intr_enabled) { cinfo->intr_enabled = 1; @@ -1802,13 +1266,17 @@ static void cyz_poll(unsigned long arg) cyz_handle_cmd(cinfo); for (port = 0; port < cinfo->nports; port++) { + struct tty_struct *tty; + info = &cinfo->ports[port]; - tty = info->port.tty; - buf_ctrl = &(zfw_ctrl->buf_ctrl[port]); + tty = tty_port_tty_get(&info->port); + /* OK to pass NULL to the handle functions below. + They need to drop the data in that case. */ if (!info->throttle) - cyz_handle_rx(info, buf_ctrl); - cyz_handle_tx(info, buf_ctrl); + cyz_handle_rx(info, tty); + cyz_handle_tx(info, tty); + tty_kref_put(tty); } /* poll every 'cyz_polling_cycle' period */ expires = jiffies + cyz_polling_cycle; @@ -1824,13 +1292,12 @@ static void cyz_poll(unsigned long arg) /* This is called whenever a port becomes active; interrupts are enabled and DTR & RTS are turned on. */ -static int startup(struct cyclades_port *info) +static int cy_startup(struct cyclades_port *info, struct tty_struct *tty) { struct cyclades_card *card; unsigned long flags; int retval = 0; - void __iomem *base_addr; - int chip, channel, index; + int channel; unsigned long page; card = info->card; @@ -1842,15 +1309,11 @@ static int startup(struct cyclades_port *info) spin_lock_irqsave(&card->card_lock, flags); - if (info->port.flags & ASYNC_INITIALIZED) { - free_page(page); + if (info->port.flags & ASYNC_INITIALIZED) goto errout; - } if (!info->type) { - if (info->port.tty) - set_bit(TTY_IO_ERROR, &info->port.tty->flags); - free_page(page); + set_bit(TTY_IO_ERROR, &tty->flags); goto errout; } @@ -1861,96 +1324,53 @@ static int startup(struct cyclades_port *info) spin_unlock_irqrestore(&card->card_lock, flags); - set_line_char(info); + cy_set_line_char(info, tty); if (!cy_is_Z(card)) { - chip = channel >> 2; channel &= 0x03; - index = card->bus_index; - base_addr = card->base_addr + (cy_chip_offset[chip] << index); -#ifdef CY_DEBUG_OPEN - printk(KERN_DEBUG "cyc startup card %d, chip %d, channel %d, " - "base_addr %p\n", - card, chip, channel, base_addr); -#endif spin_lock_irqsave(&card->card_lock, flags); - cy_writeb(base_addr + (CyCAR << index), (u_char) channel); + cyy_writeb(info, CyCAR, channel); - cy_writeb(base_addr + (CyRTPR << index), + cyy_writeb(info, CyRTPR, (info->default_timeout ? info->default_timeout : 0x02)); /* 10ms rx timeout */ - cyy_issue_cmd(base_addr, CyCHAN_CTL | CyENB_RCVR | CyENB_XMTR, - index); - - cy_writeb(base_addr + (CyCAR << index), (u_char) channel); - cy_writeb(base_addr + (CyMSVR1 << index), CyRTS); - cy_writeb(base_addr + (CyMSVR2 << index), CyDTR); - -#ifdef CY_DEBUG_DTR - printk(KERN_DEBUG "cyc:startup raising DTR\n"); - printk(KERN_DEBUG " status: 0x%x, 0x%x\n", - readb(base_addr + (CyMSVR1 << index)), - readb(base_addr + (CyMSVR2 << index))); -#endif - - cy_writeb(base_addr + (CySRER << index), - readb(base_addr + (CySRER << index)) | CyRxData); - info->port.flags |= ASYNC_INITIALIZED; - - if (info->port.tty) - clear_bit(TTY_IO_ERROR, &info->port.tty->flags); - info->xmit_cnt = info->xmit_head = info->xmit_tail = 0; - info->breakon = info->breakoff = 0; - memset((char *)&info->idle_stats, 0, sizeof(info->idle_stats)); - info->idle_stats.in_use = - info->idle_stats.recv_idle = - info->idle_stats.xmit_idle = jiffies; + cyy_issue_cmd(info, CyCHAN_CTL | CyENB_RCVR | CyENB_XMTR); - spin_unlock_irqrestore(&card->card_lock, flags); + cyy_change_rts_dtr(info, TIOCM_RTS | TIOCM_DTR, 0); + cyy_writeb(info, CySRER, cyy_readb(info, CySRER) | CyRxData); } else { - struct FIRM_ID __iomem *firm_id; - struct ZFW_CTRL __iomem *zfw_ctrl; - struct BOARD_CTRL __iomem *board_ctrl; - struct CH_CTRL __iomem *ch_ctrl; + struct CH_CTRL __iomem *ch_ctrl = info->u.cyz.ch_ctrl; - base_addr = card->base_addr; - - firm_id = base_addr + ID_ADDRESS; if (!cyz_is_loaded(card)) return -ENODEV; - zfw_ctrl = card->base_addr + - (readl(&firm_id->zfwctrl_addr) & 0xfffff); - board_ctrl = &zfw_ctrl->board_ctrl; - ch_ctrl = zfw_ctrl->ch_ctrl; - #ifdef CY_DEBUG_OPEN printk(KERN_DEBUG "cyc startup Z card %d, channel %d, " - "base_addr %p\n", card, channel, base_addr); + "base_addr %p\n", card, channel, card->base_addr); #endif spin_lock_irqsave(&card->card_lock, flags); - cy_writel(&ch_ctrl[channel].op_mode, C_CH_ENABLE); + cy_writel(&ch_ctrl->op_mode, C_CH_ENABLE); #ifdef Z_WAKE #ifdef CONFIG_CYZ_INTR - cy_writel(&ch_ctrl[channel].intr_enable, + cy_writel(&ch_ctrl->intr_enable, C_IN_TXBEMPTY | C_IN_TXLOWWM | C_IN_RXHIWM | C_IN_RXNNDT | C_IN_IOCTLW | C_IN_MDCD); #else - cy_writel(&ch_ctrl[channel].intr_enable, + cy_writel(&ch_ctrl->intr_enable, C_IN_IOCTLW | C_IN_MDCD); #endif /* CONFIG_CYZ_INTR */ #else #ifdef CONFIG_CYZ_INTR - cy_writel(&ch_ctrl[channel].intr_enable, + cy_writel(&ch_ctrl->intr_enable, C_IN_TXBEMPTY | C_IN_TXLOWWM | C_IN_RXHIWM | C_IN_RXNNDT | C_IN_MDCD); #else - cy_writel(&ch_ctrl[channel].intr_enable, C_IN_MDCD); + cy_writel(&ch_ctrl->intr_enable, C_IN_MDCD); #endif /* CONFIG_CYZ_INTR */ #endif /* Z_WAKE */ @@ -1969,32 +1389,22 @@ static int startup(struct cyclades_port *info) /* set timeout !!! */ /* set RTS and DTR !!! */ - cy_writel(&ch_ctrl[channel].rs_control, - readl(&ch_ctrl[channel].rs_control) | C_RS_RTS | - C_RS_DTR); - retval = cyz_issue_cmd(card, channel, C_CM_IOCTLM, 0L); - if (retval != 0) { - printk(KERN_ERR "cyc:startup(3) retval on ttyC%d was " - "%x\n", info->line, retval); - } -#ifdef CY_DEBUG_DTR - printk(KERN_DEBUG "cyc:startup raising Z DTR\n"); -#endif + tty_port_raise_dtr_rts(&info->port); /* enable send, recv, modem !!! */ + } - info->port.flags |= ASYNC_INITIALIZED; - if (info->port.tty) - clear_bit(TTY_IO_ERROR, &info->port.tty->flags); - info->xmit_cnt = info->xmit_head = info->xmit_tail = 0; - info->breakon = info->breakoff = 0; - memset((char *)&info->idle_stats, 0, sizeof(info->idle_stats)); - info->idle_stats.in_use = - info->idle_stats.recv_idle = - info->idle_stats.xmit_idle = jiffies; + info->port.flags |= ASYNC_INITIALIZED; - spin_unlock_irqrestore(&card->card_lock, flags); - } + clear_bit(TTY_IO_ERROR, &tty->flags); + info->xmit_cnt = info->xmit_head = info->xmit_tail = 0; + info->breakon = info->breakoff = 0; + memset((char *)&info->idle_stats, 0, sizeof(info->idle_stats)); + info->idle_stats.in_use = + info->idle_stats.recv_idle = + info->idle_stats.xmit_idle = jiffies; + + spin_unlock_irqrestore(&card->card_lock, flags); #ifdef CY_DEBUG_OPEN printk(KERN_DEBUG "cyc startup done\n"); @@ -2003,28 +1413,20 @@ static int startup(struct cyclades_port *info) errout: spin_unlock_irqrestore(&card->card_lock, flags); + free_page(page); return retval; } /* startup */ static void start_xmit(struct cyclades_port *info) { - struct cyclades_card *card; + struct cyclades_card *card = info->card; unsigned long flags; - void __iomem *base_addr; - int chip, channel, index; + int channel = info->line - card->first_line; - card = info->card; - channel = info->line - card->first_line; if (!cy_is_Z(card)) { - chip = channel >> 2; - channel &= 0x03; - index = card->bus_index; - base_addr = card->base_addr + (cy_chip_offset[chip] << index); - spin_lock_irqsave(&card->card_lock, flags); - cy_writeb(base_addr + (CyCAR << index), channel); - cy_writeb(base_addr + (CySRER << index), - readb(base_addr + (CySRER << index)) | CyTxRdy); + cyy_writeb(info, CyCAR, channel & 0x03); + cyy_writeb(info, CySRER, cyy_readb(info, CySRER) | CyTxRdy); spin_unlock_irqrestore(&card->card_lock, flags); } else { #ifdef CONFIG_CYZ_INTR @@ -2047,12 +1449,11 @@ static void start_xmit(struct cyclades_port *info) * This routine shuts down a serial port; interrupts are disabled, * and DTR is dropped if the hangup on close termio flag is on. */ -static void shutdown(struct cyclades_port *info) +static void cy_shutdown(struct cyclades_port *info, struct tty_struct *tty) { struct cyclades_card *card; unsigned long flags; - void __iomem *base_addr; - int chip, channel, index; + int channel; if (!(info->port.flags & ASYNC_INITIALIZED)) return; @@ -2060,21 +1461,10 @@ static void shutdown(struct cyclades_port *info) card = info->card; channel = info->line - card->first_line; if (!cy_is_Z(card)) { - chip = channel >> 2; - channel &= 0x03; - index = card->bus_index; - base_addr = card->base_addr + (cy_chip_offset[chip] << index); - -#ifdef CY_DEBUG_OPEN - printk(KERN_DEBUG "cyc shutdown Y card %d, chip %d, " - "channel %d, base_addr %p\n", - card, chip, channel, base_addr); -#endif - spin_lock_irqsave(&card->card_lock, flags); /* Clear delta_msr_wait queue to avoid mem leaks. */ - wake_up_interruptible(&info->delta_msr_wait); + wake_up_interruptible(&info->port.delta_msr_wait); if (info->port.xmit_buf) { unsigned char *temp; @@ -2082,47 +1472,25 @@ static void shutdown(struct cyclades_port *info) info->port.xmit_buf = NULL; free_page((unsigned long)temp); } - cy_writeb(base_addr + (CyCAR << index), (u_char) channel); - if (!info->port.tty || (info->port.tty->termios->c_cflag & HUPCL)) { - cy_writeb(base_addr + (CyMSVR1 << index), ~CyRTS); - cy_writeb(base_addr + (CyMSVR2 << index), ~CyDTR); -#ifdef CY_DEBUG_DTR - printk(KERN_DEBUG "cyc shutdown dropping DTR\n"); - printk(KERN_DEBUG " status: 0x%x, 0x%x\n", - readb(base_addr + (CyMSVR1 << index)), - readb(base_addr + (CyMSVR2 << index))); -#endif - } - cyy_issue_cmd(base_addr, CyCHAN_CTL | CyDIS_RCVR, index); + if (tty->termios->c_cflag & HUPCL) + cyy_change_rts_dtr(info, 0, TIOCM_RTS | TIOCM_DTR); + + cyy_issue_cmd(info, CyCHAN_CTL | CyDIS_RCVR); /* it may be appropriate to clear _XMIT at some later date (after testing)!!! */ - if (info->port.tty) - set_bit(TTY_IO_ERROR, &info->port.tty->flags); + set_bit(TTY_IO_ERROR, &tty->flags); info->port.flags &= ~ASYNC_INITIALIZED; spin_unlock_irqrestore(&card->card_lock, flags); } else { - struct FIRM_ID __iomem *firm_id; - struct ZFW_CTRL __iomem *zfw_ctrl; - struct BOARD_CTRL __iomem *board_ctrl; - struct CH_CTRL __iomem *ch_ctrl; - int retval; - - base_addr = card->base_addr; #ifdef CY_DEBUG_OPEN printk(KERN_DEBUG "cyc shutdown Z card %d, channel %d, " - "base_addr %p\n", card, channel, base_addr); + "base_addr %p\n", card, channel, card->base_addr); #endif - firm_id = base_addr + ID_ADDRESS; if (!cyz_is_loaded(card)) return; - zfw_ctrl = card->base_addr + - (readl(&firm_id->zfwctrl_addr) & 0xfffff); - board_ctrl = &zfw_ctrl->board_ctrl; - ch_ctrl = zfw_ctrl->ch_ctrl; - spin_lock_irqsave(&card->card_lock, flags); if (info->port.xmit_buf) { @@ -2132,23 +1500,10 @@ static void shutdown(struct cyclades_port *info) free_page((unsigned long)temp); } - if (!info->port.tty || (info->port.tty->termios->c_cflag & HUPCL)) { - cy_writel(&ch_ctrl[channel].rs_control, - (__u32)(readl(&ch_ctrl[channel].rs_control) & - ~(C_RS_RTS | C_RS_DTR))); - retval = cyz_issue_cmd(info->card, channel, - C_CM_IOCTLM, 0L); - if (retval != 0) { - printk(KERN_ERR"cyc:shutdown retval on ttyC%d " - "was %x\n", info->line, retval); - } -#ifdef CY_DEBUG_DTR - printk(KERN_DEBUG "cyc:shutdown dropping Z DTR\n"); -#endif - } + if (tty->termios->c_cflag & HUPCL) + tty_port_lower_dtr_rts(&info->port); - if (info->port.tty) - set_bit(TTY_IO_ERROR, &info->port.tty->flags); + set_bit(TTY_IO_ERROR, &tty->flags); info->port.flags &= ~ASYNC_INITIALIZED; spin_unlock_irqrestore(&card->card_lock, flags); @@ -2165,199 +1520,6 @@ static void shutdown(struct cyclades_port *info) * ------------------------------------------------------------ */ -static int -block_til_ready(struct tty_struct *tty, struct file *filp, - struct cyclades_port *info) -{ - DECLARE_WAITQUEUE(wait, current); - struct cyclades_card *cinfo; - unsigned long flags; - int chip, channel, index; - int retval; - void __iomem *base_addr; - - cinfo = info->card; - channel = info->line - cinfo->first_line; - - /* - * If the device is in the middle of being closed, then block - * until it's done, and then try again. - */ - if (tty_hung_up_p(filp) || (info->port.flags & ASYNC_CLOSING)) { - wait_event_interruptible(info->port.close_wait, - !(info->port.flags & ASYNC_CLOSING)); - return (info->port.flags & ASYNC_HUP_NOTIFY) ? -EAGAIN: -ERESTARTSYS; - } - - /* - * If non-blocking mode is set, then make the check up front - * and then exit. - */ - if ((filp->f_flags & O_NONBLOCK) || - (tty->flags & (1 << TTY_IO_ERROR))) { - info->port.flags |= ASYNC_NORMAL_ACTIVE; - return 0; - } - - /* - * Block waiting for the carrier detect and the line to become - * free (i.e., not in use by the callout). While we are in - * this loop, info->port.count is dropped by one, so that - * cy_close() knows when to free things. We restore it upon - * exit, either normal or abnormal. - */ - retval = 0; - add_wait_queue(&info->port.open_wait, &wait); -#ifdef CY_DEBUG_OPEN - printk(KERN_DEBUG "cyc block_til_ready before block: ttyC%d, " - "count = %d\n", info->line, info->port.count); -#endif - spin_lock_irqsave(&cinfo->card_lock, flags); - if (!tty_hung_up_p(filp)) - info->port.count--; - spin_unlock_irqrestore(&cinfo->card_lock, flags); -#ifdef CY_DEBUG_COUNT - printk(KERN_DEBUG "cyc block_til_ready: (%d): decrementing count to " - "%d\n", current->pid, info->port.count); -#endif - info->port.blocked_open++; - - if (!cy_is_Z(cinfo)) { - chip = channel >> 2; - channel &= 0x03; - index = cinfo->bus_index; - base_addr = cinfo->base_addr + (cy_chip_offset[chip] << index); - - while (1) { - spin_lock_irqsave(&cinfo->card_lock, flags); - if ((tty->termios->c_cflag & CBAUD)) { - cy_writeb(base_addr + (CyCAR << index), - (u_char) channel); - cy_writeb(base_addr + (CyMSVR1 << index), - CyRTS); - cy_writeb(base_addr + (CyMSVR2 << index), - CyDTR); -#ifdef CY_DEBUG_DTR - printk(KERN_DEBUG "cyc:block_til_ready raising " - "DTR\n"); - printk(KERN_DEBUG " status: 0x%x, 0x%x\n", - readb(base_addr + (CyMSVR1 << index)), - readb(base_addr + (CyMSVR2 << index))); -#endif - } - spin_unlock_irqrestore(&cinfo->card_lock, flags); - - set_current_state(TASK_INTERRUPTIBLE); - if (tty_hung_up_p(filp) || - !(info->port.flags & ASYNC_INITIALIZED)) { - retval = ((info->port.flags & ASYNC_HUP_NOTIFY) ? - -EAGAIN : -ERESTARTSYS); - break; - } - - spin_lock_irqsave(&cinfo->card_lock, flags); - cy_writeb(base_addr + (CyCAR << index), - (u_char) channel); - if (!(info->port.flags & ASYNC_CLOSING) && (C_CLOCAL(tty) || - (readb(base_addr + - (CyMSVR1 << index)) & CyDCD))) { - spin_unlock_irqrestore(&cinfo->card_lock, flags); - break; - } - spin_unlock_irqrestore(&cinfo->card_lock, flags); - - if (signal_pending(current)) { - retval = -ERESTARTSYS; - break; - } -#ifdef CY_DEBUG_OPEN - printk(KERN_DEBUG "cyc block_til_ready blocking: " - "ttyC%d, count = %d\n", - info->line, info->port.count); -#endif - schedule(); - } - } else { - struct FIRM_ID __iomem *firm_id; - struct ZFW_CTRL __iomem *zfw_ctrl; - struct BOARD_CTRL __iomem *board_ctrl; - struct CH_CTRL __iomem *ch_ctrl; - - base_addr = cinfo->base_addr; - firm_id = base_addr + ID_ADDRESS; - if (!cyz_is_loaded(cinfo)) { - __set_current_state(TASK_RUNNING); - remove_wait_queue(&info->port.open_wait, &wait); - return -EINVAL; - } - - zfw_ctrl = base_addr + (readl(&firm_id->zfwctrl_addr) - & 0xfffff); - board_ctrl = &zfw_ctrl->board_ctrl; - ch_ctrl = zfw_ctrl->ch_ctrl; - - while (1) { - if ((tty->termios->c_cflag & CBAUD)) { - cy_writel(&ch_ctrl[channel].rs_control, - readl(&ch_ctrl[channel].rs_control) | - C_RS_RTS | C_RS_DTR); - retval = cyz_issue_cmd(cinfo, - channel, C_CM_IOCTLM, 0L); - if (retval != 0) { - printk(KERN_ERR "cyc:block_til_ready " - "retval on ttyC%d was %x\n", - info->line, retval); - } -#ifdef CY_DEBUG_DTR - printk(KERN_DEBUG "cyc:block_til_ready raising " - "Z DTR\n"); -#endif - } - - set_current_state(TASK_INTERRUPTIBLE); - if (tty_hung_up_p(filp) || - !(info->port.flags & ASYNC_INITIALIZED)) { - retval = ((info->port.flags & ASYNC_HUP_NOTIFY) ? - -EAGAIN : -ERESTARTSYS); - break; - } - if (!(info->port.flags & ASYNC_CLOSING) && (C_CLOCAL(tty) || - (readl(&ch_ctrl[channel].rs_status) & - C_RS_DCD))) { - break; - } - if (signal_pending(current)) { - retval = -ERESTARTSYS; - break; - } -#ifdef CY_DEBUG_OPEN - printk(KERN_DEBUG "cyc block_til_ready blocking: " - "ttyC%d, count = %d\n", - info->line, info->port.count); -#endif - schedule(); - } - } - __set_current_state(TASK_RUNNING); - remove_wait_queue(&info->port.open_wait, &wait); - if (!tty_hung_up_p(filp)) { - info->port.count++; -#ifdef CY_DEBUG_COUNT - printk(KERN_DEBUG "cyc:block_til_ready (%d): incrementing " - "count to %d\n", current->pid, info->port.count); -#endif - } - info->port.blocked_open--; -#ifdef CY_DEBUG_OPEN - printk(KERN_DEBUG "cyc:block_til_ready after blocking: ttyC%d, " - "count = %d\n", info->line, info->port.count); -#endif - if (retval) - return retval; - info->port.flags |= ASYNC_NORMAL_ACTIVE; - return 0; -} /* block_til_ready */ - /* * This routine is called whenever a serial port is opened. It * performs the serial-specific initialization for the tty structure. @@ -2436,7 +1598,6 @@ static int cy_open(struct tty_struct *tty, struct file *filp) printk(KERN_DEBUG "cyc:cy_open ttyC%d\n", info->line); #endif tty->driver_data = info; - info->port.tty = tty; if (serial_paranoia_check(info, tty->name, "cy_open")) return -ENODEV; @@ -2462,11 +1623,11 @@ static int cy_open(struct tty_struct *tty, struct file *filp) /* * Start up serial port */ - retval = startup(info); + retval = cy_startup(info, tty); if (retval) return retval; - retval = block_til_ready(tty, filp, info); + retval = tty_port_block_til_ready(&info->port, tty, filp); if (retval) { #ifdef CY_DEBUG_OPEN printk(KERN_DEBUG "cyc:cy_open returning after block_til_ready " @@ -2476,6 +1637,7 @@ static int cy_open(struct tty_struct *tty, struct file *filp) } info->throttle = 0; + tty_port_tty_set(&info->port, tty); #ifdef CY_DEBUG_OPEN printk(KERN_DEBUG "cyc:cy_open done\n"); @@ -2490,8 +1652,6 @@ static void cy_wait_until_sent(struct tty_struct *tty, int timeout) { struct cyclades_card *card; struct cyclades_port *info = tty->driver_data; - void __iomem *base_addr; - int chip, channel, index; unsigned long orig_jiffies; int char_time; @@ -2535,13 +1695,8 @@ static void cy_wait_until_sent(struct tty_struct *tty, int timeout) timeout, char_time, jiffies); #endif card = info->card; - channel = (info->line) - (card->first_line); if (!cy_is_Z(card)) { - chip = channel >> 2; - channel &= 0x03; - index = card->bus_index; - base_addr = card->base_addr + (cy_chip_offset[chip] << index); - while (readb(base_addr + (CySRER << index)) & CyTxRdy) { + while (cyy_readb(info, CySRER) & CyTxRdy) { #ifdef CY_DEBUG_WAIT_UNTIL_SENT printk(KERN_DEBUG "Not clean (jiff=%lu)...", jiffies); #endif @@ -2595,103 +1750,37 @@ static void cy_flush_buffer(struct tty_struct *tty) } /* cy_flush_buffer */ -/* - * This routine is called when a particular tty device is closed. - */ -static void cy_close(struct tty_struct *tty, struct file *filp) +static void cy_do_close(struct tty_port *port) { - struct cyclades_port *info = tty->driver_data; + struct cyclades_port *info = container_of(port, struct cyclades_port, + port); struct cyclades_card *card; unsigned long flags; - -#ifdef CY_DEBUG_OTHER - printk(KERN_DEBUG "cyc:cy_close ttyC%d\n", info->line); -#endif - - if (!info || serial_paranoia_check(info, tty->name, "cy_close")) - return; + int channel; card = info->card; - - spin_lock_irqsave(&card->card_lock, flags); - /* If the TTY is being hung up, nothing to do */ - if (tty_hung_up_p(filp)) { - spin_unlock_irqrestore(&card->card_lock, flags); - return; - } -#ifdef CY_DEBUG_OPEN - printk(KERN_DEBUG "cyc:cy_close ttyC%d, count = %d\n", info->line, - info->port.count); -#endif - if ((tty->count == 1) && (info->port.count != 1)) { - /* - * Uh, oh. tty->count is 1, which means that the tty - * structure will be freed. Info->count should always - * be one in these conditions. If it's greater than - * one, we've got real problems, since it means the - * serial port won't be shutdown. - */ - printk(KERN_ERR "cyc:cy_close: bad serial port count; " - "tty->count is 1, info->port.count is %d\n", info->port.count); - info->port.count = 1; - } -#ifdef CY_DEBUG_COUNT - printk(KERN_DEBUG "cyc:cy_close at (%d): decrementing count to %d\n", - current->pid, info->port.count - 1); -#endif - if (--info->port.count < 0) { -#ifdef CY_DEBUG_COUNT - printk(KERN_DEBUG "cyc:cyc_close setting count to 0\n"); -#endif - info->port.count = 0; - } - if (info->port.count) { - spin_unlock_irqrestore(&card->card_lock, flags); - return; - } - info->port.flags |= ASYNC_CLOSING; - - /* - * Now we wait for the transmit buffer to clear; and we notify - * the line discipline to only process XON/XOFF characters. - */ - tty->closing = 1; - spin_unlock_irqrestore(&card->card_lock, flags); - if (info->port.closing_wait != CY_CLOSING_WAIT_NONE) - tty_wait_until_sent(tty, info->port.closing_wait); - + channel = info->line - card->first_line; spin_lock_irqsave(&card->card_lock, flags); if (!cy_is_Z(card)) { - int channel = info->line - card->first_line; - int index = card->bus_index; - void __iomem *base_addr = card->base_addr + - (cy_chip_offset[channel >> 2] << index); /* Stop accepting input */ - channel &= 0x03; - cy_writeb(base_addr + (CyCAR << index), (u_char) channel); - cy_writeb(base_addr + (CySRER << index), - readb(base_addr + (CySRER << index)) & ~CyRxData); + cyy_writeb(info, CyCAR, channel & 0x03); + cyy_writeb(info, CySRER, cyy_readb(info, CySRER) & ~CyRxData); if (info->port.flags & ASYNC_INITIALIZED) { /* Waiting for on-board buffers to be empty before closing the port */ spin_unlock_irqrestore(&card->card_lock, flags); - cy_wait_until_sent(tty, info->timeout); + cy_wait_until_sent(port->tty, info->timeout); spin_lock_irqsave(&card->card_lock, flags); } } else { #ifdef Z_WAKE /* Waiting for on-board buffers to be empty before closing the port */ - void __iomem *base_addr = card->base_addr; - struct FIRM_ID __iomem *firm_id = base_addr + ID_ADDRESS; - struct ZFW_CTRL __iomem *zfw_ctrl = - base_addr + (readl(&firm_id->zfwctrl_addr) & 0xfffff); - struct CH_CTRL __iomem *ch_ctrl = zfw_ctrl->ch_ctrl; - int channel = info->line - card->first_line; + struct CH_CTRL __iomem *ch_ctrl = info->u.cyz.ch_ctrl; int retval; - if (readl(&ch_ctrl[channel].flow_status) != C_FS_TXIDLE) { + if (readl(&ch_ctrl->flow_status) != C_FS_TXIDLE) { retval = cyz_issue_cmd(card, channel, C_CM_IOCTLW, 0L); if (retval != 0) { printk(KERN_DEBUG "cyc:cy_close retval on " @@ -2703,32 +1792,19 @@ static void cy_close(struct tty_struct *tty, struct file *filp) } #endif } - spin_unlock_irqrestore(&card->card_lock, flags); - shutdown(info); - cy_flush_buffer(tty); - tty_ldisc_flush(tty); - spin_lock_irqsave(&card->card_lock, flags); - - tty->closing = 0; - info->port.tty = NULL; - if (info->port.blocked_open) { - spin_unlock_irqrestore(&card->card_lock, flags); - if (info->port.close_delay) { - msleep_interruptible(jiffies_to_msecs - (info->port.close_delay)); - } - wake_up_interruptible(&info->port.open_wait); - spin_lock_irqsave(&card->card_lock, flags); - } - info->port.flags &= ~(ASYNC_NORMAL_ACTIVE | ASYNC_CLOSING); - wake_up_interruptible(&info->port.close_wait); - -#ifdef CY_DEBUG_OTHER - printk(KERN_DEBUG "cyc:cy_close done\n"); -#endif + cy_shutdown(info, port->tty); +} - spin_unlock_irqrestore(&card->card_lock, flags); +/* + * This routine is called when a particular tty device is closed. + */ +static void cy_close(struct tty_struct *tty, struct file *filp) +{ + struct cyclades_port *info = tty->driver_data; + if (!info || serial_paranoia_check(info, tty->name, "cy_close")) + return; + tty_port_close(&info->port, tty, filp); } /* cy_close */ /* This routine gets called when tty_write has put something into @@ -2871,18 +1947,13 @@ static int cy_write_room(struct tty_struct *tty) static int cy_chars_in_buffer(struct tty_struct *tty) { - struct cyclades_card *card; struct cyclades_port *info = tty->driver_data; - int channel; if (serial_paranoia_check(info, tty->name, "cy_chars_in_buffer")) return 0; - card = info->card; - channel = (info->line) - (card->first_line); - #ifdef Z_EXT_CHARS_IN_BUFFER - if (!cy_is_Z(card)) { + if (!cy_is_Z(info->card)) { #endif /* Z_EXT_CHARS_IN_BUFFER */ #ifdef CY_DEBUG_IO printk(KERN_DEBUG "cyc:cy_chars_in_buffer ttyC%d %d\n", @@ -2891,20 +1962,11 @@ static int cy_chars_in_buffer(struct tty_struct *tty) return info->xmit_cnt; #ifdef Z_EXT_CHARS_IN_BUFFER } else { - static struct FIRM_ID *firm_id; - static struct ZFW_CTRL *zfw_ctrl; - static struct CH_CTRL *ch_ctrl; - static struct BUF_CTRL *buf_ctrl; + struct BUF_CTRL __iomem *buf_ctrl = info->u.cyz.buf_ctrl; int char_count; __u32 tx_put, tx_get, tx_bufsize; lock_kernel(); - firm_id = card->base_addr + ID_ADDRESS; - zfw_ctrl = card->base_addr + - (readl(&firm_id->zfwctrl_addr) & 0xfffff); - ch_ctrl = &(zfw_ctrl->ch_ctrl[channel]); - buf_ctrl = &(zfw_ctrl->buf_ctrl[channel]); - tx_get = readl(&buf_ctrl->tx_get); tx_put = readl(&buf_ctrl->tx_put); tx_bufsize = readl(&buf_ctrl->tx_bufsize); @@ -2957,48 +2019,44 @@ static void cyy_baud_calc(struct cyclades_port *info, __u32 baud) * This routine finds or computes the various line characteristics. * It used to be called config_setup */ -static void set_line_char(struct cyclades_port *info) +static void cy_set_line_char(struct cyclades_port *info, struct tty_struct *tty) { struct cyclades_card *card; unsigned long flags; - void __iomem *base_addr; - int chip, channel, index; + int channel; unsigned cflag, iflag; int baud, baud_rate = 0; int i; - if (!info->port.tty || !info->port.tty->termios) + if (!tty->termios) /* XXX can this happen at all? */ return; if (info->line == -1) return; - cflag = info->port.tty->termios->c_cflag; - iflag = info->port.tty->termios->c_iflag; + cflag = tty->termios->c_cflag; + iflag = tty->termios->c_iflag; /* * Set up the tty->alt_speed kludge */ - if (info->port.tty) { - if ((info->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI) - info->port.tty->alt_speed = 57600; - if ((info->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI) - info->port.tty->alt_speed = 115200; - if ((info->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI) - info->port.tty->alt_speed = 230400; - if ((info->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP) - info->port.tty->alt_speed = 460800; - } + if ((info->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI) + tty->alt_speed = 57600; + if ((info->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI) + tty->alt_speed = 115200; + if ((info->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI) + tty->alt_speed = 230400; + if ((info->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP) + tty->alt_speed = 460800; card = info->card; channel = info->line - card->first_line; if (!cy_is_Z(card)) { - - index = card->bus_index; + u32 cflags; /* baud rate */ - baud = tty_get_baud_rate(info->port.tty); + baud = tty_get_baud_rate(tty); if (baud == 38400 && (info->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST) { if (info->custom_divisor) @@ -3107,124 +2165,68 @@ static void set_line_char(struct cyclades_port *info) cable. Contact Marcio Saito for details. ***********************************************/ - chip = channel >> 2; channel &= 0x03; - base_addr = card->base_addr + (cy_chip_offset[chip] << index); spin_lock_irqsave(&card->card_lock, flags); - cy_writeb(base_addr + (CyCAR << index), (u_char) channel); + cyy_writeb(info, CyCAR, channel); /* tx and rx baud rate */ - cy_writeb(base_addr + (CyTCOR << index), info->tco); - cy_writeb(base_addr + (CyTBPR << index), info->tbpr); - cy_writeb(base_addr + (CyRCOR << index), info->rco); - cy_writeb(base_addr + (CyRBPR << index), info->rbpr); + cyy_writeb(info, CyTCOR, info->tco); + cyy_writeb(info, CyTBPR, info->tbpr); + cyy_writeb(info, CyRCOR, info->rco); + cyy_writeb(info, CyRBPR, info->rbpr); /* set line characteristics according configuration */ - cy_writeb(base_addr + (CySCHR1 << index), - START_CHAR(info->port.tty)); - cy_writeb(base_addr + (CySCHR2 << index), STOP_CHAR(info->port.tty)); - cy_writeb(base_addr + (CyCOR1 << index), info->cor1); - cy_writeb(base_addr + (CyCOR2 << index), info->cor2); - cy_writeb(base_addr + (CyCOR3 << index), info->cor3); - cy_writeb(base_addr + (CyCOR4 << index), info->cor4); - cy_writeb(base_addr + (CyCOR5 << index), info->cor5); + cyy_writeb(info, CySCHR1, START_CHAR(tty)); + cyy_writeb(info, CySCHR2, STOP_CHAR(tty)); + cyy_writeb(info, CyCOR1, info->cor1); + cyy_writeb(info, CyCOR2, info->cor2); + cyy_writeb(info, CyCOR3, info->cor3); + cyy_writeb(info, CyCOR4, info->cor4); + cyy_writeb(info, CyCOR5, info->cor5); - cyy_issue_cmd(base_addr, CyCOR_CHANGE | CyCOR1ch | CyCOR2ch | - CyCOR3ch, index); + cyy_issue_cmd(info, CyCOR_CHANGE | CyCOR1ch | CyCOR2ch | + CyCOR3ch); /* !!! Is this needed? */ - cy_writeb(base_addr + (CyCAR << index), (u_char) channel); - cy_writeb(base_addr + (CyRTPR << index), + cyy_writeb(info, CyCAR, channel); + cyy_writeb(info, CyRTPR, (info->default_timeout ? info->default_timeout : 0x02)); /* 10ms rx timeout */ - if (C_CLOCAL(info->port.tty)) { - /* without modem intr */ - cy_writeb(base_addr + (CySRER << index), - readb(base_addr + (CySRER << index)) | CyMdmCh); - /* act on 1->0 modem transitions */ - if ((cflag & CRTSCTS) && info->rflow) { - cy_writeb(base_addr + (CyMCOR1 << index), - (CyCTS | rflow_thr[i])); - } else { - cy_writeb(base_addr + (CyMCOR1 << index), - CyCTS); - } - /* act on 0->1 modem transitions */ - cy_writeb(base_addr + (CyMCOR2 << index), CyCTS); - } else { - /* without modem intr */ - cy_writeb(base_addr + (CySRER << index), - readb(base_addr + - (CySRER << index)) | CyMdmCh); - /* act on 1->0 modem transitions */ - if ((cflag & CRTSCTS) && info->rflow) { - cy_writeb(base_addr + (CyMCOR1 << index), - (CyDSR | CyCTS | CyRI | CyDCD | - rflow_thr[i])); - } else { - cy_writeb(base_addr + (CyMCOR1 << index), - CyDSR | CyCTS | CyRI | CyDCD); - } - /* act on 0->1 modem transitions */ - cy_writeb(base_addr + (CyMCOR2 << index), - CyDSR | CyCTS | CyRI | CyDCD); - } + cflags = CyCTS; + if (!C_CLOCAL(tty)) + cflags |= CyDSR | CyRI | CyDCD; + /* without modem intr */ + cyy_writeb(info, CySRER, cyy_readb(info, CySRER) | CyMdmCh); + /* act on 1->0 modem transitions */ + if ((cflag & CRTSCTS) && info->rflow) + cyy_writeb(info, CyMCOR1, cflags | rflow_thr[i]); + else + cyy_writeb(info, CyMCOR1, cflags); + /* act on 0->1 modem transitions */ + cyy_writeb(info, CyMCOR2, cflags); - if (i == 0) { /* baud rate is zero, turn off line */ - if (info->rtsdtr_inv) { - cy_writeb(base_addr + (CyMSVR1 << index), - ~CyRTS); - } else { - cy_writeb(base_addr + (CyMSVR2 << index), - ~CyDTR); - } -#ifdef CY_DEBUG_DTR - printk(KERN_DEBUG "cyc:set_line_char dropping DTR\n"); - printk(KERN_DEBUG " status: 0x%x, 0x%x\n", - readb(base_addr + (CyMSVR1 << index)), - readb(base_addr + (CyMSVR2 << index))); -#endif - } else { - if (info->rtsdtr_inv) { - cy_writeb(base_addr + (CyMSVR1 << index), - CyRTS); - } else { - cy_writeb(base_addr + (CyMSVR2 << index), - CyDTR); - } -#ifdef CY_DEBUG_DTR - printk(KERN_DEBUG "cyc:set_line_char raising DTR\n"); - printk(KERN_DEBUG " status: 0x%x, 0x%x\n", - readb(base_addr + (CyMSVR1 << index)), - readb(base_addr + (CyMSVR2 << index))); -#endif - } + if (i == 0) /* baud rate is zero, turn off line */ + cyy_change_rts_dtr(info, 0, TIOCM_DTR); + else + cyy_change_rts_dtr(info, TIOCM_DTR, 0); - if (info->port.tty) - clear_bit(TTY_IO_ERROR, &info->port.tty->flags); + clear_bit(TTY_IO_ERROR, &tty->flags); spin_unlock_irqrestore(&card->card_lock, flags); } else { - struct FIRM_ID __iomem *firm_id; - struct ZFW_CTRL __iomem *zfw_ctrl; - struct CH_CTRL __iomem *ch_ctrl; + struct CH_CTRL __iomem *ch_ctrl = info->u.cyz.ch_ctrl; __u32 sw_flow; int retval; - firm_id = card->base_addr + ID_ADDRESS; if (!cyz_is_loaded(card)) return; - zfw_ctrl = card->base_addr + - (readl(&firm_id->zfwctrl_addr) & 0xfffff); - ch_ctrl = &(zfw_ctrl->ch_ctrl[channel]); - /* baud rate */ - baud = tty_get_baud_rate(info->port.tty); + baud = tty_get_baud_rate(tty); if (baud == 38400 && (info->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST) { if (info->custom_divisor) @@ -3335,45 +2337,38 @@ static void set_line_char(struct cyclades_port *info) "was %x\n", info->line, retval); } - if (info->port.tty) - clear_bit(TTY_IO_ERROR, &info->port.tty->flags); + clear_bit(TTY_IO_ERROR, &tty->flags); } } /* set_line_char */ -static int -get_serial_info(struct cyclades_port *info, +static int cy_get_serial_info(struct cyclades_port *info, struct serial_struct __user *retinfo) { - struct serial_struct tmp; struct cyclades_card *cinfo = info->card; - - if (!retinfo) - return -EFAULT; - memset(&tmp, 0, sizeof(tmp)); - tmp.type = info->type; - tmp.line = info->line; - tmp.port = (info->card - cy_card) * 0x100 + info->line - - cinfo->first_line; - tmp.irq = cinfo->irq; - tmp.flags = info->port.flags; - tmp.close_delay = info->port.close_delay; - tmp.closing_wait = info->port.closing_wait; - tmp.baud_base = info->baud; - tmp.custom_divisor = info->custom_divisor; - tmp.hub6 = 0; /*!!! */ + struct serial_struct tmp = { + .type = info->type, + .line = info->line, + .port = (info->card - cy_card) * 0x100 + info->line - + cinfo->first_line, + .irq = cinfo->irq, + .flags = info->port.flags, + .close_delay = info->port.close_delay, + .closing_wait = info->port.closing_wait, + .baud_base = info->baud, + .custom_divisor = info->custom_divisor, + .hub6 = 0, /*!!! */ + }; return copy_to_user(retinfo, &tmp, sizeof(*retinfo)) ? -EFAULT : 0; -} /* get_serial_info */ +} static int -set_serial_info(struct cyclades_port *info, +cy_set_serial_info(struct cyclades_port *info, struct tty_struct *tty, struct serial_struct __user *new_info) { struct serial_struct new_serial; - struct cyclades_port old_info; if (copy_from_user(&new_serial, new_info, sizeof(new_serial))) return -EFAULT; - old_info = *info; if (!capable(CAP_SYS_ADMIN)) { if (new_serial.close_delay != info->port.close_delay || @@ -3403,10 +2398,10 @@ set_serial_info(struct cyclades_port *info, check_and_exit: if (info->port.flags & ASYNC_INITIALIZED) { - set_line_char(info); + cy_set_line_char(info, tty); return 0; } else { - return startup(info); + return cy_startup(info, tty); } } /* set_serial_info */ @@ -3422,24 +2417,14 @@ check_and_exit: */ static int get_lsr_info(struct cyclades_port *info, unsigned int __user *value) { - struct cyclades_card *card; - int chip, channel, index; - unsigned char status; + struct cyclades_card *card = info->card; unsigned int result; unsigned long flags; - void __iomem *base_addr; + u8 status; - card = info->card; - channel = (info->line) - (card->first_line); if (!cy_is_Z(card)) { - chip = channel >> 2; - channel &= 0x03; - index = card->bus_index; - base_addr = card->base_addr + (cy_chip_offset[chip] << index); - spin_lock_irqsave(&card->card_lock, flags); - status = readb(base_addr + (CySRER << index)) & - (CyTxRdy | CyTxMpty); + status = cyy_readb(info, CySRER) & (CyTxRdy | CyTxMpty); spin_unlock_irqrestore(&card->card_lock, flags); result = (status ? 0 : TIOCSER_TEMT); } else { @@ -3453,34 +2438,23 @@ static int cy_tiocmget(struct tty_struct *tty, struct file *file) { struct cyclades_port *info = tty->driver_data; struct cyclades_card *card; - int chip, channel, index; - void __iomem *base_addr; - unsigned long flags; - unsigned char status; - unsigned long lstatus; - unsigned int result; - struct FIRM_ID __iomem *firm_id; - struct ZFW_CTRL __iomem *zfw_ctrl; - struct BOARD_CTRL __iomem *board_ctrl; - struct CH_CTRL __iomem *ch_ctrl; + int result; if (serial_paranoia_check(info, tty->name, __func__)) return -ENODEV; - lock_kernel(); - card = info->card; - channel = info->line - card->first_line; + + lock_kernel(); if (!cy_is_Z(card)) { - chip = channel >> 2; - channel &= 0x03; - index = card->bus_index; - base_addr = card->base_addr + (cy_chip_offset[chip] << index); + unsigned long flags; + int channel = info->line - card->first_line; + u8 status; spin_lock_irqsave(&card->card_lock, flags); - cy_writeb(base_addr + (CyCAR << index), (u_char) channel); - status = readb(base_addr + (CyMSVR1 << index)); - status |= readb(base_addr + (CyMSVR2 << index)); + cyy_writeb(info, CyCAR, channel & 0x03); + status = cyy_readb(info, CyMSVR1); + status |= cyy_readb(info, CyMSVR2); spin_unlock_irqrestore(&card->card_lock, flags); if (info->rtsdtr_inv) { @@ -3495,27 +2469,22 @@ static int cy_tiocmget(struct tty_struct *tty, struct file *file) ((status & CyDSR) ? TIOCM_DSR : 0) | ((status & CyCTS) ? TIOCM_CTS : 0); } else { - base_addr = card->base_addr; - firm_id = card->base_addr + ID_ADDRESS; - if (cyz_is_loaded(card)) { - zfw_ctrl = card->base_addr + - (readl(&firm_id->zfwctrl_addr) & 0xfffff); - board_ctrl = &zfw_ctrl->board_ctrl; - ch_ctrl = zfw_ctrl->ch_ctrl; - lstatus = readl(&ch_ctrl[channel].rs_status); - result = ((lstatus & C_RS_RTS) ? TIOCM_RTS : 0) | - ((lstatus & C_RS_DTR) ? TIOCM_DTR : 0) | - ((lstatus & C_RS_DCD) ? TIOCM_CAR : 0) | - ((lstatus & C_RS_RI) ? TIOCM_RNG : 0) | - ((lstatus & C_RS_DSR) ? TIOCM_DSR : 0) | - ((lstatus & C_RS_CTS) ? TIOCM_CTS : 0); - } else { - result = 0; - unlock_kernel(); - return -ENODEV; + u32 lstatus; + + if (!cyz_is_loaded(card)) { + result = -ENODEV; + goto end; } + lstatus = readl(&info->u.cyz.ch_ctrl->rs_status); + result = ((lstatus & C_RS_RTS) ? TIOCM_RTS : 0) | + ((lstatus & C_RS_DTR) ? TIOCM_DTR : 0) | + ((lstatus & C_RS_DCD) ? TIOCM_CAR : 0) | + ((lstatus & C_RS_RI) ? TIOCM_RNG : 0) | + ((lstatus & C_RS_DSR) ? TIOCM_DSR : 0) | + ((lstatus & C_RS_CTS) ? TIOCM_CTS : 0); } +end: unlock_kernel(); return result; } /* cy_tiomget */ @@ -3526,150 +2495,53 @@ cy_tiocmset(struct tty_struct *tty, struct file *file, { struct cyclades_port *info = tty->driver_data; struct cyclades_card *card; - int chip, channel, index; - void __iomem *base_addr; unsigned long flags; - struct FIRM_ID __iomem *firm_id; - struct ZFW_CTRL __iomem *zfw_ctrl; - struct BOARD_CTRL __iomem *board_ctrl; - struct CH_CTRL __iomem *ch_ctrl; - int retval; if (serial_paranoia_check(info, tty->name, __func__)) return -ENODEV; card = info->card; - channel = (info->line) - (card->first_line); if (!cy_is_Z(card)) { - chip = channel >> 2; - channel &= 0x03; - index = card->bus_index; - base_addr = card->base_addr + (cy_chip_offset[chip] << index); + spin_lock_irqsave(&card->card_lock, flags); + cyy_change_rts_dtr(info, set, clear); + spin_unlock_irqrestore(&card->card_lock, flags); + } else { + struct CH_CTRL __iomem *ch_ctrl = info->u.cyz.ch_ctrl; + int retval, channel = info->line - card->first_line; + u32 rs; - if (set & TIOCM_RTS) { - spin_lock_irqsave(&card->card_lock, flags); - cy_writeb(base_addr + (CyCAR << index), - (u_char) channel); - if (info->rtsdtr_inv) { - cy_writeb(base_addr + (CyMSVR2 << index), - CyDTR); - } else { - cy_writeb(base_addr + (CyMSVR1 << index), - CyRTS); - } - spin_unlock_irqrestore(&card->card_lock, flags); - } - if (clear & TIOCM_RTS) { - spin_lock_irqsave(&card->card_lock, flags); - cy_writeb(base_addr + (CyCAR << index), - (u_char) channel); - if (info->rtsdtr_inv) { - cy_writeb(base_addr + (CyMSVR2 << index), - ~CyDTR); - } else { - cy_writeb(base_addr + (CyMSVR1 << index), - ~CyRTS); - } - spin_unlock_irqrestore(&card->card_lock, flags); - } + if (!cyz_is_loaded(card)) + return -ENODEV; + + spin_lock_irqsave(&card->card_lock, flags); + rs = readl(&ch_ctrl->rs_control); + if (set & TIOCM_RTS) + rs |= C_RS_RTS; + if (clear & TIOCM_RTS) + rs &= ~C_RS_RTS; if (set & TIOCM_DTR) { - spin_lock_irqsave(&card->card_lock, flags); - cy_writeb(base_addr + (CyCAR << index), - (u_char) channel); - if (info->rtsdtr_inv) { - cy_writeb(base_addr + (CyMSVR1 << index), - CyRTS); - } else { - cy_writeb(base_addr + (CyMSVR2 << index), - CyDTR); - } + rs |= C_RS_DTR; #ifdef CY_DEBUG_DTR - printk(KERN_DEBUG "cyc:set_modem_info raising DTR\n"); - printk(KERN_DEBUG " status: 0x%x, 0x%x\n", - readb(base_addr + (CyMSVR1 << index)), - readb(base_addr + (CyMSVR2 << index))); + printk(KERN_DEBUG "cyc:set_modem_info raising Z DTR\n"); #endif - spin_unlock_irqrestore(&card->card_lock, flags); } if (clear & TIOCM_DTR) { - spin_lock_irqsave(&card->card_lock, flags); - cy_writeb(base_addr + (CyCAR << index), - (u_char) channel); - if (info->rtsdtr_inv) { - cy_writeb(base_addr + (CyMSVR1 << index), - ~CyRTS); - } else { - cy_writeb(base_addr + (CyMSVR2 << index), - ~CyDTR); - } - + rs &= ~C_RS_DTR; #ifdef CY_DEBUG_DTR - printk(KERN_DEBUG "cyc:set_modem_info dropping DTR\n"); - printk(KERN_DEBUG " status: 0x%x, 0x%x\n", - readb(base_addr + (CyMSVR1 << index)), - readb(base_addr + (CyMSVR2 << index))); + printk(KERN_DEBUG "cyc:set_modem_info clearing " + "Z DTR\n"); #endif - spin_unlock_irqrestore(&card->card_lock, flags); } - } else { - base_addr = card->base_addr; - - firm_id = card->base_addr + ID_ADDRESS; - if (cyz_is_loaded(card)) { - zfw_ctrl = card->base_addr + - (readl(&firm_id->zfwctrl_addr) & 0xfffff); - board_ctrl = &zfw_ctrl->board_ctrl; - ch_ctrl = zfw_ctrl->ch_ctrl; - - if (set & TIOCM_RTS) { - spin_lock_irqsave(&card->card_lock, flags); - cy_writel(&ch_ctrl[channel].rs_control, - readl(&ch_ctrl[channel].rs_control) | - C_RS_RTS); - spin_unlock_irqrestore(&card->card_lock, flags); - } - if (clear & TIOCM_RTS) { - spin_lock_irqsave(&card->card_lock, flags); - cy_writel(&ch_ctrl[channel].rs_control, - readl(&ch_ctrl[channel].rs_control) & - ~C_RS_RTS); - spin_unlock_irqrestore(&card->card_lock, flags); - } - if (set & TIOCM_DTR) { - spin_lock_irqsave(&card->card_lock, flags); - cy_writel(&ch_ctrl[channel].rs_control, - readl(&ch_ctrl[channel].rs_control) | - C_RS_DTR); -#ifdef CY_DEBUG_DTR - printk(KERN_DEBUG "cyc:set_modem_info raising " - "Z DTR\n"); -#endif - spin_unlock_irqrestore(&card->card_lock, flags); - } - if (clear & TIOCM_DTR) { - spin_lock_irqsave(&card->card_lock, flags); - cy_writel(&ch_ctrl[channel].rs_control, - readl(&ch_ctrl[channel].rs_control) & - ~C_RS_DTR); -#ifdef CY_DEBUG_DTR - printk(KERN_DEBUG "cyc:set_modem_info clearing " - "Z DTR\n"); -#endif - spin_unlock_irqrestore(&card->card_lock, flags); - } - } else { - return -ENODEV; - } - spin_lock_irqsave(&card->card_lock, flags); + cy_writel(&ch_ctrl->rs_control, rs); retval = cyz_issue_cmd(card, channel, C_CM_IOCTLM, 0L); + spin_unlock_irqrestore(&card->card_lock, flags); if (retval != 0) { printk(KERN_ERR "cyc:set_modem_info retval on ttyC%d " "was %x\n", info->line, retval); } - spin_unlock_irqrestore(&card->card_lock, flags); } return 0; -} /* cy_tiocmset */ +} /* * cy_break() --- routine which turns the break handling on or off @@ -3734,41 +2606,18 @@ static int cy_break(struct tty_struct *tty, int break_state) return retval; } /* cy_break */ -static int get_mon_info(struct cyclades_port *info, - struct cyclades_monitor __user *mon) -{ - - if (copy_to_user(mon, &info->mon, sizeof(struct cyclades_monitor))) - return -EFAULT; - info->mon.int_count = 0; - info->mon.char_count = 0; - info->mon.char_max = 0; - info->mon.char_last = 0; - return 0; -} /* get_mon_info */ - static int set_threshold(struct cyclades_port *info, unsigned long value) { - struct cyclades_card *card; - void __iomem *base_addr; - int channel, chip, index; + struct cyclades_card *card = info->card; unsigned long flags; - card = info->card; - channel = info->line - card->first_line; if (!cy_is_Z(card)) { - chip = channel >> 2; - channel &= 0x03; - index = card->bus_index; - base_addr = - card->base_addr + (cy_chip_offset[chip] << index); - info->cor3 &= ~CyREC_FIFO; info->cor3 |= value & CyREC_FIFO; spin_lock_irqsave(&card->card_lock, flags); - cy_writeb(base_addr + (CyCOR3 << index), info->cor3); - cyy_issue_cmd(base_addr, CyCOR_CHANGE | CyCOR3ch, index); + cyy_writeb(info, CyCOR3, info->cor3); + cyy_issue_cmd(info, CyCOR_CHANGE | CyCOR3ch); spin_unlock_irqrestore(&card->card_lock, flags); } return 0; @@ -3777,55 +2626,23 @@ static int set_threshold(struct cyclades_port *info, unsigned long value) static int get_threshold(struct cyclades_port *info, unsigned long __user *value) { - struct cyclades_card *card; - void __iomem *base_addr; - int channel, chip, index; - unsigned long tmp; + struct cyclades_card *card = info->card; - card = info->card; - channel = info->line - card->first_line; if (!cy_is_Z(card)) { - chip = channel >> 2; - channel &= 0x03; - index = card->bus_index; - base_addr = card->base_addr + (cy_chip_offset[chip] << index); - - tmp = readb(base_addr + (CyCOR3 << index)) & CyREC_FIFO; + u8 tmp = cyy_readb(info, CyCOR3) & CyREC_FIFO; return put_user(tmp, value); } return 0; } /* get_threshold */ -static int set_default_threshold(struct cyclades_port *info, - unsigned long value) -{ - info->default_threshold = value & 0x0f; - return 0; -} /* set_default_threshold */ - -static int get_default_threshold(struct cyclades_port *info, - unsigned long __user *value) -{ - return put_user(info->default_threshold, value); -} /* get_default_threshold */ - static int set_timeout(struct cyclades_port *info, unsigned long value) { - struct cyclades_card *card; - void __iomem *base_addr; - int channel, chip, index; + struct cyclades_card *card = info->card; unsigned long flags; - card = info->card; - channel = info->line - card->first_line; if (!cy_is_Z(card)) { - chip = channel >> 2; - channel &= 0x03; - index = card->bus_index; - base_addr = card->base_addr + (cy_chip_offset[chip] << index); - spin_lock_irqsave(&card->card_lock, flags); - cy_writeb(base_addr + (CyRTPR << index), value & 0xff); + cyy_writeb(info, CyRTPR, value & 0xff); spin_unlock_irqrestore(&card->card_lock, flags); } return 0; @@ -3834,36 +2651,35 @@ static int set_timeout(struct cyclades_port *info, unsigned long value) static int get_timeout(struct cyclades_port *info, unsigned long __user *value) { - struct cyclades_card *card; - void __iomem *base_addr; - int channel, chip, index; - unsigned long tmp; + struct cyclades_card *card = info->card; - card = info->card; - channel = info->line - card->first_line; if (!cy_is_Z(card)) { - chip = channel >> 2; - channel &= 0x03; - index = card->bus_index; - base_addr = card->base_addr + (cy_chip_offset[chip] << index); - - tmp = readb(base_addr + (CyRTPR << index)); + u8 tmp = cyy_readb(info, CyRTPR); return put_user(tmp, value); } return 0; } /* get_timeout */ -static int set_default_timeout(struct cyclades_port *info, unsigned long value) +static int cy_cflags_changed(struct cyclades_port *info, unsigned long arg, + struct cyclades_icount *cprev) { - info->default_timeout = value & 0xff; - return 0; -} /* set_default_timeout */ + struct cyclades_icount cnow; + unsigned long flags; + int ret; -static int get_default_timeout(struct cyclades_port *info, - unsigned long __user *value) -{ - return put_user(info->default_timeout, value); -} /* get_default_timeout */ + spin_lock_irqsave(&info->card->card_lock, flags); + cnow = info->icount; /* atomic copy */ + spin_unlock_irqrestore(&info->card->card_lock, flags); + + ret = ((arg & TIOCM_RNG) && (cnow.rng != cprev->rng)) || + ((arg & TIOCM_DSR) && (cnow.dsr != cprev->dsr)) || + ((arg & TIOCM_CD) && (cnow.dcd != cprev->dcd)) || + ((arg & TIOCM_CTS) && (cnow.cts != cprev->cts)); + + *cprev = cnow; + + return ret; +} /* * This routine allows the tty driver to implement device- @@ -3875,8 +2691,7 @@ cy_ioctl(struct tty_struct *tty, struct file *file, unsigned int cmd, unsigned long arg) { struct cyclades_port *info = tty->driver_data; - struct cyclades_icount cprev, cnow; /* kernel counter temps */ - struct serial_icounter_struct __user *p_cuser; /* user space */ + struct cyclades_icount cnow; /* kernel counter temps */ int ret_val = 0; unsigned long flags; void __user *argp = (void __user *)arg; @@ -3892,7 +2707,11 @@ cy_ioctl(struct tty_struct *tty, struct file *file, switch (cmd) { case CYGETMON: - ret_val = get_mon_info(info, argp); + if (copy_to_user(argp, &info->mon, sizeof(info->mon))) { + ret_val = -EFAULT; + break; + } + memset(&info->mon, 0, sizeof(info->mon)); break; case CYGETTHRESH: ret_val = get_threshold(info, argp); @@ -3901,10 +2720,11 @@ cy_ioctl(struct tty_struct *tty, struct file *file, ret_val = set_threshold(info, arg); break; case CYGETDEFTHRESH: - ret_val = get_default_threshold(info, argp); + ret_val = put_user(info->default_threshold, + (unsigned long __user *)argp); break; case CYSETDEFTHRESH: - ret_val = set_default_threshold(info, arg); + info->default_threshold = arg & 0x0f; break; case CYGETTIMEOUT: ret_val = get_timeout(info, argp); @@ -3913,21 +2733,20 @@ cy_ioctl(struct tty_struct *tty, struct file *file, ret_val = set_timeout(info, arg); break; case CYGETDEFTIMEOUT: - ret_val = get_default_timeout(info, argp); + ret_val = put_user(info->default_timeout, + (unsigned long __user *)argp); break; case CYSETDEFTIMEOUT: - ret_val = set_default_timeout(info, arg); + info->default_timeout = arg & 0xff; break; case CYSETRFLOW: info->rflow = (int)arg; - ret_val = 0; break; case CYGETRFLOW: ret_val = info->rflow; break; case CYSETRTSDTR_INV: info->rtsdtr_inv = (int)arg; - ret_val = 0; break; case CYGETRTSDTR_INV: ret_val = info->rtsdtr_inv; @@ -3938,7 +2757,6 @@ cy_ioctl(struct tty_struct *tty, struct file *file, #ifndef CONFIG_CYZ_INTR case CYZSETPOLLCYCLE: cyz_polling_cycle = (arg * HZ) / 1000; - ret_val = 0; break; case CYZGETPOLLCYCLE: ret_val = (cyz_polling_cycle * 1000) / HZ; @@ -3946,16 +2764,15 @@ cy_ioctl(struct tty_struct *tty, struct file *file, #endif /* CONFIG_CYZ_INTR */ case CYSETWAIT: info->port.closing_wait = (unsigned short)arg * HZ / 100; - ret_val = 0; break; case CYGETWAIT: ret_val = info->port.closing_wait / (HZ / 100); break; case TIOCGSERIAL: - ret_val = get_serial_info(info, argp); + ret_val = cy_get_serial_info(info, argp); break; case TIOCSSERIAL: - ret_val = set_serial_info(info, argp); + ret_val = cy_set_serial_info(info, tty, argp); break; case TIOCSERGETLSR: /* Get line status register */ ret_val = get_lsr_info(info, argp); @@ -3971,17 +2788,8 @@ cy_ioctl(struct tty_struct *tty, struct file *file, /* note the counters on entry */ cnow = info->icount; spin_unlock_irqrestore(&info->card->card_lock, flags); - ret_val = wait_event_interruptible(info->delta_msr_wait, ({ - cprev = cnow; - spin_lock_irqsave(&info->card->card_lock, flags); - cnow = info->icount; /* atomic copy */ - spin_unlock_irqrestore(&info->card->card_lock, flags); - - ((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) || - ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) || - ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) || - ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts)); - })); + ret_val = wait_event_interruptible(info->port.delta_msr_wait, + cy_cflags_changed(info, arg, &cnow)); break; /* @@ -3990,46 +2798,29 @@ cy_ioctl(struct tty_struct *tty, struct file *file, * NB: both 1->0 and 0->1 transitions are counted except for * RI where only 0->1 is counted. */ - case TIOCGICOUNT: + case TIOCGICOUNT: { + struct serial_icounter_struct sic = { }; + spin_lock_irqsave(&info->card->card_lock, flags); cnow = info->icount; spin_unlock_irqrestore(&info->card->card_lock, flags); - p_cuser = argp; - ret_val = put_user(cnow.cts, &p_cuser->cts); - if (ret_val) - break; - ret_val = put_user(cnow.dsr, &p_cuser->dsr); - if (ret_val) - break; - ret_val = put_user(cnow.rng, &p_cuser->rng); - if (ret_val) - break; - ret_val = put_user(cnow.dcd, &p_cuser->dcd); - if (ret_val) - break; - ret_val = put_user(cnow.rx, &p_cuser->rx); - if (ret_val) - break; - ret_val = put_user(cnow.tx, &p_cuser->tx); - if (ret_val) - break; - ret_val = put_user(cnow.frame, &p_cuser->frame); - if (ret_val) - break; - ret_val = put_user(cnow.overrun, &p_cuser->overrun); - if (ret_val) - break; - ret_val = put_user(cnow.parity, &p_cuser->parity); - if (ret_val) - break; - ret_val = put_user(cnow.brk, &p_cuser->brk); - if (ret_val) - break; - ret_val = put_user(cnow.buf_overrun, &p_cuser->buf_overrun); - if (ret_val) - break; - ret_val = 0; + + sic.cts = cnow.cts; + sic.dsr = cnow.dsr; + sic.rng = cnow.rng; + sic.dcd = cnow.dcd; + sic.rx = cnow.rx; + sic.tx = cnow.tx; + sic.frame = cnow.frame; + sic.overrun = cnow.overrun; + sic.parity = cnow.parity; + sic.brk = cnow.brk; + sic.buf_overrun = cnow.buf_overrun; + + if (copy_to_user(argp, &sic, sizeof(sic))) + ret_val = -EFAULT; break; + } default: ret_val = -ENOIOCTLCMD; } @@ -4055,7 +2846,7 @@ static void cy_set_termios(struct tty_struct *tty, struct ktermios *old_termios) printk(KERN_DEBUG "cyc:cy_set_termios ttyC%d\n", info->line); #endif - set_line_char(info); + cy_set_line_char(info, tty); if ((old_termios->c_cflag & CRTSCTS) && !(tty->termios->c_cflag & CRTSCTS)) { @@ -4112,8 +2903,6 @@ static void cy_throttle(struct tty_struct *tty) struct cyclades_port *info = tty->driver_data; struct cyclades_card *card; unsigned long flags; - void __iomem *base_addr; - int chip, channel, index; #ifdef CY_DEBUG_THROTTLE char buf[64]; @@ -4135,24 +2924,9 @@ static void cy_throttle(struct tty_struct *tty) } if (tty->termios->c_cflag & CRTSCTS) { - channel = info->line - card->first_line; if (!cy_is_Z(card)) { - chip = channel >> 2; - channel &= 0x03; - index = card->bus_index; - base_addr = card->base_addr + - (cy_chip_offset[chip] << index); - spin_lock_irqsave(&card->card_lock, flags); - cy_writeb(base_addr + (CyCAR << index), - (u_char) channel); - if (info->rtsdtr_inv) { - cy_writeb(base_addr + (CyMSVR2 << index), - ~CyDTR); - } else { - cy_writeb(base_addr + (CyMSVR1 << index), - ~CyRTS); - } + cyy_change_rts_dtr(info, 0, TIOCM_RTS); spin_unlock_irqrestore(&card->card_lock, flags); } else { info->throttle = 1; @@ -4170,8 +2944,6 @@ static void cy_unthrottle(struct tty_struct *tty) struct cyclades_port *info = tty->driver_data; struct cyclades_card *card; unsigned long flags; - void __iomem *base_addr; - int chip, channel, index; #ifdef CY_DEBUG_THROTTLE char buf[64]; @@ -4192,24 +2964,9 @@ static void cy_unthrottle(struct tty_struct *tty) if (tty->termios->c_cflag & CRTSCTS) { card = info->card; - channel = info->line - card->first_line; if (!cy_is_Z(card)) { - chip = channel >> 2; - channel &= 0x03; - index = card->bus_index; - base_addr = card->base_addr + - (cy_chip_offset[chip] << index); - spin_lock_irqsave(&card->card_lock, flags); - cy_writeb(base_addr + (CyCAR << index), - (u_char) channel); - if (info->rtsdtr_inv) { - cy_writeb(base_addr + (CyMSVR2 << index), - CyDTR); - } else { - cy_writeb(base_addr + (CyMSVR1 << index), - CyRTS); - } + cyy_change_rts_dtr(info, TIOCM_RTS, 0); spin_unlock_irqrestore(&card->card_lock, flags); } else { info->throttle = 0; @@ -4224,8 +2981,7 @@ static void cy_stop(struct tty_struct *tty) { struct cyclades_card *cinfo; struct cyclades_port *info = tty->driver_data; - void __iomem *base_addr; - int chip, channel, index; + int channel; unsigned long flags; #ifdef CY_DEBUG_OTHER @@ -4238,16 +2994,9 @@ static void cy_stop(struct tty_struct *tty) cinfo = info->card; channel = info->line - cinfo->first_line; if (!cy_is_Z(cinfo)) { - index = cinfo->bus_index; - chip = channel >> 2; - channel &= 0x03; - base_addr = cinfo->base_addr + (cy_chip_offset[chip] << index); - spin_lock_irqsave(&cinfo->card_lock, flags); - cy_writeb(base_addr + (CyCAR << index), - (u_char)(channel & 0x0003)); /* index channel */ - cy_writeb(base_addr + (CySRER << index), - readb(base_addr + (CySRER << index)) & ~CyTxRdy); + cyy_writeb(info, CyCAR, channel & 0x03); + cyy_writeb(info, CySRER, cyy_readb(info, CySRER) & ~CyTxRdy); spin_unlock_irqrestore(&cinfo->card_lock, flags); } } /* cy_stop */ @@ -4256,8 +3005,7 @@ static void cy_start(struct tty_struct *tty) { struct cyclades_card *cinfo; struct cyclades_port *info = tty->driver_data; - void __iomem *base_addr; - int chip, channel, index; + int channel; unsigned long flags; #ifdef CY_DEBUG_OTHER @@ -4269,17 +3017,10 @@ static void cy_start(struct tty_struct *tty) cinfo = info->card; channel = info->line - cinfo->first_line; - index = cinfo->bus_index; if (!cy_is_Z(cinfo)) { - chip = channel >> 2; - channel &= 0x03; - base_addr = cinfo->base_addr + (cy_chip_offset[chip] << index); - spin_lock_irqsave(&cinfo->card_lock, flags); - cy_writeb(base_addr + (CyCAR << index), - (u_char) (channel & 0x0003)); /* index channel */ - cy_writeb(base_addr + (CySRER << index), - readb(base_addr + (CySRER << index)) | CyTxRdy); + cyy_writeb(info, CyCAR, channel & 0x03); + cyy_writeb(info, CySRER, cyy_readb(info, CySRER) | CyTxRdy); spin_unlock_irqrestore(&cinfo->card_lock, flags); } } /* cy_start */ @@ -4299,17 +3040,84 @@ static void cy_hangup(struct tty_struct *tty) return; cy_flush_buffer(tty); - shutdown(info); - info->port.count = 0; -#ifdef CY_DEBUG_COUNT - printk(KERN_DEBUG "cyc:cy_hangup (%d): setting count to 0\n", - current->pid); -#endif - info->port.tty = NULL; - info->port.flags &= ~ASYNC_NORMAL_ACTIVE; - wake_up_interruptible(&info->port.open_wait); + cy_shutdown(info, tty); + tty_port_hangup(&info->port); } /* cy_hangup */ +static int cyy_carrier_raised(struct tty_port *port) +{ + struct cyclades_port *info = container_of(port, struct cyclades_port, + port); + struct cyclades_card *cinfo = info->card; + unsigned long flags; + int channel = info->line - cinfo->first_line; + u32 cd; + + spin_lock_irqsave(&cinfo->card_lock, flags); + cyy_writeb(info, CyCAR, channel & 0x03); + cd = cyy_readb(info, CyMSVR1) & CyDCD; + spin_unlock_irqrestore(&cinfo->card_lock, flags); + + return cd; +} + +static void cyy_dtr_rts(struct tty_port *port, int raise) +{ + struct cyclades_port *info = container_of(port, struct cyclades_port, + port); + struct cyclades_card *cinfo = info->card; + unsigned long flags; + + spin_lock_irqsave(&cinfo->card_lock, flags); + cyy_change_rts_dtr(info, raise ? TIOCM_RTS | TIOCM_DTR : 0, + raise ? 0 : TIOCM_RTS | TIOCM_DTR); + spin_unlock_irqrestore(&cinfo->card_lock, flags); +} + +static int cyz_carrier_raised(struct tty_port *port) +{ + struct cyclades_port *info = container_of(port, struct cyclades_port, + port); + + return readl(&info->u.cyz.ch_ctrl->rs_status) & C_RS_DCD; +} + +static void cyz_dtr_rts(struct tty_port *port, int raise) +{ + struct cyclades_port *info = container_of(port, struct cyclades_port, + port); + struct cyclades_card *cinfo = info->card; + struct CH_CTRL __iomem *ch_ctrl = info->u.cyz.ch_ctrl; + int ret, channel = info->line - cinfo->first_line; + u32 rs; + + rs = readl(&ch_ctrl->rs_control); + if (raise) + rs |= C_RS_RTS | C_RS_DTR; + else + rs &= ~(C_RS_RTS | C_RS_DTR); + cy_writel(&ch_ctrl->rs_control, rs); + ret = cyz_issue_cmd(cinfo, channel, C_CM_IOCTLM, 0L); + if (ret != 0) + printk(KERN_ERR "%s: retval on ttyC%d was %x\n", + __func__, info->line, ret); +#ifdef CY_DEBUG_DTR + printk(KERN_DEBUG "%s: raising Z DTR\n", __func__); +#endif +} + +static const struct tty_port_operations cyy_port_ops = { + .carrier_raised = cyy_carrier_raised, + .dtr_rts = cyy_dtr_rts, + .shutdown = cy_do_close, +}; + +static const struct tty_port_operations cyz_port_ops = { + .carrier_raised = cyz_carrier_raised, + .dtr_rts = cyz_dtr_rts, + .shutdown = cy_do_close, +}; + /* * --------------------------------------------------------------------- * cy_init() and friends @@ -4321,8 +3129,7 @@ static void cy_hangup(struct tty_struct *tty) static int __devinit cy_init_card(struct cyclades_card *cinfo) { struct cyclades_port *info; - unsigned int port; - unsigned short chip_number; + unsigned int channel, port; spin_lock_init(&cinfo->card_lock); cinfo->intr_enabled = 0; @@ -4334,9 +3141,9 @@ static int __devinit cy_init_card(struct cyclades_card *cinfo) return -ENOMEM; } - for (port = cinfo->first_line; port < cinfo->first_line + cinfo->nports; - port++) { - info = &cinfo->ports[port - cinfo->first_line]; + for (channel = 0, port = cinfo->first_line; channel < cinfo->nports; + channel++, port++) { + info = &cinfo->ports[channel]; tty_port_init(&info->port); info->magic = CYCLADES_MAGIC; info->card = cinfo; @@ -4346,10 +3153,19 @@ static int __devinit cy_init_card(struct cyclades_card *cinfo) info->port.close_delay = 5 * HZ / 10; info->port.flags = STD_COM_FLAGS; init_completion(&info->shutdown_wait); - init_waitqueue_head(&info->delta_msr_wait); if (cy_is_Z(cinfo)) { + struct FIRM_ID *firm_id = cinfo->base_addr + ID_ADDRESS; + struct ZFW_CTRL *zfw_ctrl; + + info->port.ops = &cyz_port_ops; info->type = PORT_STARTECH; + + zfw_ctrl = cinfo->base_addr + + (readl(&firm_id->zfwctrl_addr) & 0xfffff); + info->u.cyz.ch_ctrl = &zfw_ctrl->ch_ctrl[channel]; + info->u.cyz.buf_ctrl = &zfw_ctrl->buf_ctrl[channel]; + if (cinfo->hw_ver == ZO_V1) info->xmit_fifo_size = CYZ_FIFO_SIZE; else @@ -4359,17 +3175,20 @@ static int __devinit cy_init_card(struct cyclades_card *cinfo) cyz_rx_restart, (unsigned long)info); #endif } else { + unsigned short chip_number; int index = cinfo->bus_index; + + info->port.ops = &cyy_port_ops; info->type = PORT_CIRRUS; info->xmit_fifo_size = CyMAX_CHAR_FIFO; info->cor1 = CyPARITY_NONE | Cy_1_STOP | Cy_8_BITS; info->cor2 = CyETC; info->cor3 = 0x08; /* _very_ small rcv threshold */ - chip_number = (port - cinfo->first_line) / 4; - info->chip_rev = readb(cinfo->base_addr + - (cy_chip_offset[chip_number] << index) + - (CyGFRCR << index)); + chip_number = channel / CyPORTS_PER_CHIP; + info->u.cyy.base_addr = cinfo->base_addr + + (cy_chip_offset[chip_number] << index); + info->chip_rev = cyy_readb(info, CyGFRCR); if (info->chip_rev >= CD1400_REV_J) { /* It is a CD1400 rev. J or later */ @@ -5060,8 +3879,14 @@ static int __devinit cy_pci_probe(struct pci_dev *pdev, } cy_card[card_no].num_chips = nchan / CyPORTS_PER_CHIP; } else { + struct FIRM_ID __iomem *firm_id = addr2 + ID_ADDRESS; + struct ZFW_CTRL __iomem *zfw_ctrl; + + zfw_ctrl = addr2 + (readl(&firm_id->zfwctrl_addr) & 0xfffff); + cy_card[card_no].hw_ver = mailbox; cy_card[card_no].num_chips = (unsigned int)-1; + cy_card[card_no].board_ctrl = &zfw_ctrl->board_ctrl; #ifdef CONFIG_CYZ_INTR /* allocate IRQ only if board has an IRQ */ if (irq != 0 && irq != 255) { @@ -5191,18 +4016,30 @@ static int cyclades_proc_show(struct seq_file *m, void *v) for (j = 0; j < cy_card[i].nports; j++) { info = &cy_card[i].ports[j]; - if (info->port.count) + if (info->port.count) { + /* XXX is the ldisc num worth this? */ + struct tty_struct *tty; + struct tty_ldisc *ld; + int num = 0; + tty = tty_port_tty_get(&info->port); + if (tty) { + ld = tty_ldisc_ref(tty); + if (ld) { + num = ld->ops->num; + tty_ldisc_deref(ld); + } + tty_kref_put(tty); + } seq_printf(m, "%3d %8lu %10lu %8lu " - "%10lu %8lu %9lu %6ld\n", info->line, + "%10lu %8lu %9lu %6d\n", info->line, (cur_jifs - info->idle_stats.in_use) / HZ, info->idle_stats.xmit_bytes, (cur_jifs - info->idle_stats.xmit_idle)/ HZ, info->idle_stats.recv_bytes, (cur_jifs - info->idle_stats.recv_idle)/ HZ, info->idle_stats.overruns, - /* FIXME: double check locking */ - (long)info->port.tty->ldisc->ops->num); - else + num); + } else seq_printf(m, "%3d %8lu %10lu %8lu " "%10lu %8lu %9lu %6ld\n", info->line, 0L, 0L, 0L, 0L, 0L, 0L, 0L); diff --git a/drivers/char/esp.c b/drivers/char/esp.c index a5c59fc2b0ff..b19d43cd9542 100644 --- a/drivers/char/esp.c +++ b/drivers/char/esp.c @@ -572,7 +572,7 @@ static void check_modem_status(struct esp_struct *info) info->icount.dcd++; if (status & UART_MSR_DCTS) info->icount.cts++; - wake_up_interruptible(&info->delta_msr_wait); + wake_up_interruptible(&info->port.delta_msr_wait); } if ((info->port.flags & ASYNC_CHECK_CD) && (status & UART_MSR_DDCD)) { @@ -927,7 +927,7 @@ static void shutdown(struct esp_struct *info) * clear delta_msr_wait queue to avoid mem leaks: we may free the irq * here so the queue might never be waken up */ - wake_up_interruptible(&info->delta_msr_wait); + wake_up_interruptible(&info->port.delta_msr_wait); wake_up_interruptible(&info->break_wait); /* stop a DMA transfer on the port being closed */ @@ -1800,7 +1800,7 @@ static int rs_ioctl(struct tty_struct *tty, struct file *file, spin_unlock_irqrestore(&info->lock, flags); while (1) { /* FIXME: convert to new style wakeup */ - interruptible_sleep_on(&info->delta_msr_wait); + interruptible_sleep_on(&info->port.delta_msr_wait); /* see if a signal did it */ if (signal_pending(current)) return -ERESTARTSYS; @@ -2452,7 +2452,6 @@ static int __init espserial_init(void) info->config.flow_off = flow_off; info->config.pio_threshold = pio_threshold; info->next_port = ports; - init_waitqueue_head(&info->delta_msr_wait); init_waitqueue_head(&info->break_wait); ports = info; printk(KERN_INFO "ttyP%d at 0x%04x (irq = %d) is an ESP ", diff --git a/drivers/char/isicom.c b/drivers/char/isicom.c index 4f1f4cd670da..426bfdd7f3e0 100644 --- a/drivers/char/isicom.c +++ b/drivers/char/isicom.c @@ -846,37 +846,53 @@ static int isicom_carrier_raised(struct tty_port *port) return (ip->status & ISI_DCD)?1 : 0; } -static int isicom_open(struct tty_struct *tty, struct file *filp) +static struct tty_port *isicom_find_port(struct tty_struct *tty) { struct isi_port *port; struct isi_board *card; unsigned int board; - int error, line; + int line = tty->index; - line = tty->index; if (line < 0 || line > PORT_COUNT-1) - return -ENODEV; + return NULL; board = BOARD(line); card = &isi_card[board]; if (!(card->status & FIRMWARE_LOADED)) - return -ENODEV; + return NULL; /* open on a port greater than the port count for the card !!! */ if (line > ((board * 16) + card->port_count - 1)) - return -ENODEV; + return NULL; port = &isi_ports[line]; if (isicom_paranoia_check(port, tty->name, "isicom_open")) - return -ENODEV; + return NULL; + return &port->port; +} + +static int isicom_open(struct tty_struct *tty, struct file *filp) +{ + struct isi_port *port; + struct isi_board *card; + struct tty_port *tport; + int error = 0; + + tport = isicom_find_port(tty); + if (tport == NULL) + return -ENODEV; + port = container_of(tport, struct isi_port, port); + card = &isi_card[BOARD(tty->index)]; isicom_setup_board(card); /* FIXME: locking on port.count etc */ port->port.count++; tty->driver_data = port; tty_port_tty_set(&port->port, tty); - error = isicom_setup_port(tty); + /* FIXME: Locking on Initialized flag */ + if (!test_bit(ASYNCB_INITIALIZED, &tport->flags)) + error = isicom_setup_port(tty); if (error == 0) error = tty_port_block_til_ready(&port->port, tty, filp); return error; @@ -952,19 +968,12 @@ static void isicom_flush_buffer(struct tty_struct *tty) tty_wakeup(tty); } -static void isicom_close(struct tty_struct *tty, struct file *filp) +static void isicom_close_port(struct tty_port *port) { - struct isi_port *ip = tty->driver_data; - struct tty_port *port = &ip->port; - struct isi_board *card; + struct isi_port *ip = container_of(port, struct isi_port, port); + struct isi_board *card = ip->card; unsigned long flags; - BUG_ON(!ip); - - card = ip->card; - if (isicom_paranoia_check(ip, tty->name, "isicom_close")) - return; - /* indicate to the card that no more data can be received on this port */ spin_lock_irqsave(&card->card_lock, flags); @@ -974,9 +983,19 @@ static void isicom_close(struct tty_struct *tty, struct file *filp) } isicom_shutdown_port(ip); spin_unlock_irqrestore(&card->card_lock, flags); +} + +static void isicom_close(struct tty_struct *tty, struct file *filp) +{ + struct isi_port *ip = tty->driver_data; + struct tty_port *port = &ip->port; + if (isicom_paranoia_check(ip, tty->name, "isicom_close")) + return; + if (tty_port_close_start(port, tty, filp) == 0) + return; + isicom_close_port(port); isicom_flush_buffer(tty); - tty_port_close_end(port, tty); } diff --git a/drivers/char/mxser.c b/drivers/char/mxser.c index dbf8d52f31d0..5e28d39b9e81 100644 --- a/drivers/char/mxser.c +++ b/drivers/char/mxser.c @@ -48,7 +48,7 @@ #include "mxser.h" -#define MXSER_VERSION "2.0.4" /* 1.12 */ +#define MXSER_VERSION "2.0.5" /* 1.14 */ #define MXSERMAJOR 174 #define MXSER_BOARDS 4 /* Max. boards */ @@ -69,6 +69,7 @@ #define PCI_DEVICE_ID_POS104UL 0x1044 #define PCI_DEVICE_ID_CB108 0x1080 #define PCI_DEVICE_ID_CP102UF 0x1023 +#define PCI_DEVICE_ID_CP112UL 0x1120 #define PCI_DEVICE_ID_CB114 0x1142 #define PCI_DEVICE_ID_CP114UL 0x1143 #define PCI_DEVICE_ID_CB134I 0x1341 @@ -139,7 +140,8 @@ static const struct mxser_cardinfo mxser_cards[] = { { "CP-138U series", 8, }, { "POS-104UL series", 4, }, { "CP-114UL series", 4, }, -/*30*/ { "CP-102UF series", 2, } +/*30*/ { "CP-102UF series", 2, }, + { "CP-112UL series", 2, }, }; /* driver_data correspond to the lines in the structure above @@ -170,6 +172,7 @@ static struct pci_device_id mxser_pcibrds[] = { { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_POS104UL), .driver_data = 28 }, { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_CP114UL), .driver_data = 29 }, { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_CP102UF), .driver_data = 30 }, + { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_CP112UL), .driver_data = 31 }, { } }; MODULE_DEVICE_TABLE(pci, mxser_pcibrds); @@ -258,7 +261,6 @@ struct mxser_port { struct mxser_mon mon_data; spinlock_t slock; - wait_queue_head_t delta_msr_wait; }; struct mxser_board { @@ -818,7 +820,7 @@ static void mxser_check_modem_status(struct tty_struct *tty, if (status & UART_MSR_DCTS) port->icount.cts++; port->mon_data.modem_status = status; - wake_up_interruptible(&port->delta_msr_wait); + wake_up_interruptible(&port->port.delta_msr_wait); if ((port->port.flags & ASYNC_CHECK_CD) && (status & UART_MSR_DDCD)) { if (status & UART_MSR_DCD) @@ -973,7 +975,7 @@ static void mxser_shutdown(struct tty_struct *tty) * clear delta_msr_wait queue to avoid mem leaks: we may free the irq * here so the queue might never be waken up */ - wake_up_interruptible(&info->delta_msr_wait); + wake_up_interruptible(&info->port.delta_msr_wait); /* * Free the IRQ, if necessary @@ -1073,34 +1075,17 @@ static void mxser_flush_buffer(struct tty_struct *tty) } -/* - * This routine is called when the serial port gets closed. First, we - * wait for the last remaining data to be sent. Then, we unlink its - * async structure from the interrupt chain if necessary, and we free - * that IRQ if nothing is left in the chain. - */ -static void mxser_close(struct tty_struct *tty, struct file *filp) +static void mxser_close_port(struct tty_struct *tty, struct tty_port *port) { - struct mxser_port *info = tty->driver_data; - struct tty_port *port = &info->port; - + struct mxser_port *info = container_of(port, struct mxser_port, port); unsigned long timeout; - - if (tty->index == MXSER_PORTS) - return; - if (!info) - return; - - if (tty_port_close_start(port, tty, filp) == 0) - return; - /* * Save the termios structure, since this port may have * separate termios for callout and dialin. * * FIXME: Can this go ? */ - if (info->port.flags & ASYNC_NORMAL_ACTIVE) + if (port->flags & ASYNC_NORMAL_ACTIVE) info->normal_termios = *tty->termios; /* * At this point we stop accepting input. To do this, we @@ -1112,7 +1097,7 @@ static void mxser_close(struct tty_struct *tty, struct file *filp) if (info->board->chip_flag) info->IER &= ~MOXA_MUST_RECV_ISR; - if (info->port.flags & ASYNC_INITIALIZED) { + if (port->flags & ASYNC_INITIALIZED) { outb(info->IER, info->ioaddr + UART_IER); /* * Before we drop DTR, make sure the UART transmitter @@ -1127,8 +1112,26 @@ static void mxser_close(struct tty_struct *tty, struct file *filp) } } mxser_shutdown(tty); - mxser_flush_buffer(tty); +} + +/* + * This routine is called when the serial port gets closed. First, we + * wait for the last remaining data to be sent. Then, we unlink its + * async structure from the interrupt chain if necessary, and we free + * that IRQ if nothing is left in the chain. + */ +static void mxser_close(struct tty_struct *tty, struct file *filp) +{ + struct mxser_port *info = tty->driver_data; + struct tty_port *port = &info->port; + + if (tty->index == MXSER_PORTS) + return; + if (tty_port_close_start(port, tty, filp) == 0) + return; + mxser_close_port(tty, port); + mxser_flush_buffer(tty); /* Right now the tty_port set is done outside of the close_end helper as we don't yet have everyone using refcounts */ tty_port_close_end(port, tty); @@ -1761,7 +1764,7 @@ static int mxser_ioctl(struct tty_struct *tty, struct file *file, cnow = info->icount; /* note the counters on entry */ spin_unlock_irqrestore(&info->slock, flags); - return wait_event_interruptible(info->delta_msr_wait, + return wait_event_interruptible(info->port.delta_msr_wait, mxser_cflags_changed(info, arg, &cnow)); /* * Get counter of input serial line interrupts (DCD,RI,DSR,CTS) @@ -1803,7 +1806,7 @@ static int mxser_ioctl(struct tty_struct *tty, struct file *file, lock_kernel(); len = mxser_chars_in_buffer(tty); - lsr = inb(info->ioaddr + UART_LSR) & UART_LSR_TEMT; + lsr = inb(info->ioaddr + UART_LSR) & UART_LSR_THRE; len += (lsr ? 0 : 1); unlock_kernel(); @@ -2413,7 +2416,6 @@ static int __devinit mxser_initbrd(struct mxser_board *brd, info->port.close_delay = 5 * HZ / 10; info->port.closing_wait = 30 * HZ; info->normal_termios = mxvar_sdriver->init_termios; - init_waitqueue_head(&info->delta_msr_wait); memset(&info->mon_data, 0, sizeof(struct mxser_mon)); info->err_shadow = 0; spin_lock_init(&info->slock); diff --git a/drivers/char/n_tty.c b/drivers/char/n_tty.c index 4e28b35024ec..2e50f4dfc79c 100644 --- a/drivers/char/n_tty.c +++ b/drivers/char/n_tty.c @@ -272,7 +272,8 @@ static inline int is_continuation(unsigned char c, struct tty_struct *tty) * * This is a helper function that handles one output character * (including special characters like TAB, CR, LF, etc.), - * putting the results in the tty driver's write buffer. + * doing OPOST processing and putting the results in the + * tty driver's write buffer. * * Note that Linux currently ignores TABDLY, CRDLY, VTDLY, FFDLY * and NLDLY. They simply aren't relevant in the world today. @@ -350,8 +351,9 @@ static int do_output_char(unsigned char c, struct tty_struct *tty, int space) * @c: character (or partial unicode symbol) * @tty: terminal device * - * Perform OPOST processing. Returns -1 when the output device is - * full and the character must be retried. + * Output one character with OPOST processing. + * Returns -1 when the output device is full and the character + * must be retried. * * Locking: output_lock to protect column state and space left * (also, this is called from n_tty_write under the @@ -377,8 +379,11 @@ static int process_output(unsigned char c, struct tty_struct *tty) /** * process_output_block - block post processor * @tty: terminal device - * @inbuf: user buffer - * @nr: number of bytes + * @buf: character buffer + * @nr: number of bytes to output + * + * Output a block of characters with OPOST processing. + * Returns the number of characters output. * * This path is used to speed up block console writes, among other * things when processing blocks of output data. It handles only @@ -571,33 +576,23 @@ static void process_echoes(struct tty_struct *tty) break; default: - if (iscntrl(op)) { - if (L_ECHOCTL(tty)) { - /* - * Ensure there is enough space - * for the whole ctrl pair. - */ - if (space < 2) { - no_space_left = 1; - break; - } - tty_put_char(tty, '^'); - tty_put_char(tty, op ^ 0100); - tty->column += 2; - space -= 2; - } else { - if (!space) { - no_space_left = 1; - break; - } - tty_put_char(tty, op); - space--; - } - } /* - * If above falls through, this was an - * undefined op. + * If the op is not a special byte code, + * it is a ctrl char tagged to be echoed + * as "^X" (where X is the letter + * representing the control char). + * Note that we must ensure there is + * enough space for the whole ctrl pair. + * */ + if (space < 2) { + no_space_left = 1; + break; + } + tty_put_char(tty, '^'); + tty_put_char(tty, op ^ 0100); + tty->column += 2; + space -= 2; cp += 2; nr -= 2; } @@ -605,12 +600,18 @@ static void process_echoes(struct tty_struct *tty) if (no_space_left) break; } else { - int retval; - - retval = do_output_char(c, tty, space); - if (retval < 0) - break; - space -= retval; + if (O_OPOST(tty) && + !(test_bit(TTY_HW_COOK_OUT, &tty->flags))) { + int retval = do_output_char(c, tty, space); + if (retval < 0) + break; + space -= retval; + } else { + if (!space) + break; + tty_put_char(tty, c); + space -= 1; + } cp += 1; nr -= 1; } @@ -798,8 +799,8 @@ static void echo_char_raw(unsigned char c, struct tty_struct *tty) * Echo user input back onto the screen. This must be called only when * L_ECHO(tty) is true. Called from the driver receive_buf path. * - * This variant tags control characters to be possibly echoed as - * as "^X" (where X is the letter representing the control char). + * This variant tags control characters to be echoed as "^X" + * (where X is the letter representing the control char). * * Locking: echo_lock to protect the echo buffer */ @@ -812,7 +813,7 @@ static void echo_char(unsigned char c, struct tty_struct *tty) add_echo_byte(ECHO_OP_START, tty); add_echo_byte(ECHO_OP_START, tty); } else { - if (iscntrl(c) && c != '\t') + if (L_ECHOCTL(tty) && iscntrl(c) && c != '\t') add_echo_byte(ECHO_OP_START, tty); add_echo_byte(c, tty); } diff --git a/drivers/char/riscom8.c b/drivers/char/riscom8.c index 171711acf5cd..3cfa22d469e0 100644 --- a/drivers/char/riscom8.c +++ b/drivers/char/riscom8.c @@ -343,7 +343,7 @@ static void rc_receive_exc(struct riscom_board const *bp) if (port == NULL) return; - tty = port->port.tty; + tty = tty_port_tty_get(&port->port); #ifdef RC_REPORT_OVERRUN status = rc_in(bp, CD180_RCSR); @@ -355,18 +355,18 @@ static void rc_receive_exc(struct riscom_board const *bp) #endif ch = rc_in(bp, CD180_RDR); if (!status) - return; + goto out; if (status & RCSR_TOUT) { printk(KERN_WARNING "rc%d: port %d: Receiver timeout. " "Hardware problems ?\n", board_No(bp), port_No(port)); - return; + goto out; } else if (status & RCSR_BREAK) { printk(KERN_INFO "rc%d: port %d: Handling break...\n", board_No(bp), port_No(port)); flag = TTY_BREAK; - if (port->port.flags & ASYNC_SAK) + if (tty && (port->port.flags & ASYNC_SAK)) do_SAK(tty); } else if (status & RCSR_PE) @@ -380,8 +380,12 @@ static void rc_receive_exc(struct riscom_board const *bp) else flag = TTY_NORMAL; - tty_insert_flip_char(tty, ch, flag); - tty_flip_buffer_push(tty); + if (tty) { + tty_insert_flip_char(tty, ch, flag); + tty_flip_buffer_push(tty); + } +out: + tty_kref_put(tty); } static void rc_receive(struct riscom_board const *bp) @@ -394,7 +398,7 @@ static void rc_receive(struct riscom_board const *bp) if (port == NULL) return; - tty = port->port.tty; + tty = tty_port_tty_get(&port->port); count = rc_in(bp, CD180_RDCR); @@ -403,15 +407,14 @@ static void rc_receive(struct riscom_board const *bp) #endif while (count--) { - if (tty_buffer_request_room(tty, 1) == 0) { - printk(KERN_WARNING "rc%d: port %d: Working around " - "flip buffer overflow.\n", - board_No(bp), port_No(port)); - break; - } - tty_insert_flip_char(tty, rc_in(bp, CD180_RDR), TTY_NORMAL); + u8 ch = rc_in(bp, CD180_RDR); + if (tty) + tty_insert_flip_char(tty, ch, TTY_NORMAL); + } + if (tty) { + tty_flip_buffer_push(tty); + tty_kref_put(tty); } - tty_flip_buffer_push(tty); } static void rc_transmit(struct riscom_board const *bp) @@ -424,22 +427,22 @@ static void rc_transmit(struct riscom_board const *bp) if (port == NULL) return; - tty = port->port.tty; + tty = tty_port_tty_get(&port->port); if (port->IER & IER_TXEMPTY) { /* FIFO drained */ rc_out(bp, CD180_CAR, port_No(port)); port->IER &= ~IER_TXEMPTY; rc_out(bp, CD180_IER, port->IER); - return; + goto out; } if ((port->xmit_cnt <= 0 && !port->break_length) - || tty->stopped || tty->hw_stopped) { + || (tty && (tty->stopped || tty->hw_stopped))) { rc_out(bp, CD180_CAR, port_No(port)); port->IER &= ~IER_TXRDY; rc_out(bp, CD180_IER, port->IER); - return; + goto out; } if (port->break_length) { @@ -464,7 +467,7 @@ static void rc_transmit(struct riscom_board const *bp) rc_out(bp, CD180_CCR, CCR_CORCHG2); port->break_length = 0; } - return; + goto out; } count = CD180_NFIFO; @@ -480,8 +483,10 @@ static void rc_transmit(struct riscom_board const *bp) port->IER &= ~IER_TXRDY; rc_out(bp, CD180_IER, port->IER); } - if (port->xmit_cnt <= port->wakeup_chars) + if (tty && port->xmit_cnt <= port->wakeup_chars) tty_wakeup(tty); +out: + tty_kref_put(tty); } static void rc_check_modem(struct riscom_board const *bp) @@ -494,37 +499,43 @@ static void rc_check_modem(struct riscom_board const *bp) if (port == NULL) return; - tty = port->port.tty; + tty = tty_port_tty_get(&port->port); mcr = rc_in(bp, CD180_MCR); if (mcr & MCR_CDCHG) { if (rc_in(bp, CD180_MSVR) & MSVR_CD) wake_up_interruptible(&port->port.open_wait); - else + else if (tty) tty_hangup(tty); } #ifdef RISCOM_BRAIN_DAMAGED_CTS if (mcr & MCR_CTSCHG) { if (rc_in(bp, CD180_MSVR) & MSVR_CTS) { - tty->hw_stopped = 0; port->IER |= IER_TXRDY; - if (port->xmit_cnt <= port->wakeup_chars) - tty_wakeup(tty); + if (tty) { + tty->hw_stopped = 0; + if (port->xmit_cnt <= port->wakeup_chars) + tty_wakeup(tty); + } } else { - tty->hw_stopped = 1; + if (tty) + tty->hw_stopped = 1; port->IER &= ~IER_TXRDY; } rc_out(bp, CD180_IER, port->IER); } if (mcr & MCR_DSRCHG) { if (rc_in(bp, CD180_MSVR) & MSVR_DSR) { - tty->hw_stopped = 0; port->IER |= IER_TXRDY; - if (port->xmit_cnt <= port->wakeup_chars) - tty_wakeup(tty); + if (tty) { + tty->hw_stopped = 0; + if (port->xmit_cnt <= port->wakeup_chars) + tty_wakeup(tty); + } } else { - tty->hw_stopped = 1; + if (tty) + tty->hw_stopped = 1; port->IER &= ~IER_TXRDY; } rc_out(bp, CD180_IER, port->IER); @@ -533,6 +544,7 @@ static void rc_check_modem(struct riscom_board const *bp) /* Clear change bits */ rc_out(bp, CD180_MCR, 0); + tty_kref_put(tty); } /* The main interrupt processing routine */ @@ -632,9 +644,9 @@ static void rc_shutdown_board(struct riscom_board *bp) * Setting up port characteristics. * Must be called with disabled interrupts */ -static void rc_change_speed(struct riscom_board *bp, struct riscom_port *port) +static void rc_change_speed(struct tty_struct *tty, struct riscom_board *bp, + struct riscom_port *port) { - struct tty_struct *tty = port->port.tty; unsigned long baud; long tmp; unsigned char cor1 = 0, cor3 = 0; @@ -781,7 +793,8 @@ static void rc_change_speed(struct riscom_board *bp, struct riscom_port *port) } /* Must be called with interrupts enabled */ -static int rc_setup_port(struct riscom_board *bp, struct riscom_port *port) +static int rc_setup_port(struct tty_struct *tty, struct riscom_board *bp, + struct riscom_port *port) { unsigned long flags; @@ -793,11 +806,11 @@ static int rc_setup_port(struct riscom_board *bp, struct riscom_port *port) spin_lock_irqsave(&riscom_lock, flags); - clear_bit(TTY_IO_ERROR, &port->port.tty->flags); + clear_bit(TTY_IO_ERROR, &tty->flags); if (port->port.count == 1) bp->count++; port->xmit_cnt = port->xmit_head = port->xmit_tail = 0; - rc_change_speed(bp, port); + rc_change_speed(tty, bp, port); port->port.flags |= ASYNC_INITIALIZED; spin_unlock_irqrestore(&riscom_lock, flags); @@ -898,9 +911,9 @@ static int rc_open(struct tty_struct *tty, struct file *filp) port->port.count++; tty->driver_data = port; - port->port.tty = tty; + tty_port_tty_set(&port->port, tty); - error = rc_setup_port(bp, port); + error = rc_setup_port(tty, bp, port); if (error == 0) error = tty_port_block_til_ready(&port->port, tty, filp); return error; @@ -921,20 +934,12 @@ static void rc_flush_buffer(struct tty_struct *tty) tty_wakeup(tty); } -static void rc_close(struct tty_struct *tty, struct file *filp) +static void rc_close_port(struct tty_port *port) { - struct riscom_port *port = tty->driver_data; - struct riscom_board *bp; unsigned long flags; + struct riscom_port *rp = container_of(port, struct riscom_port, port); + struct riscom_board *bp = port_Board(rp); unsigned long timeout; - - if (!port || rc_paranoia_check(port, tty->name, "close")) - return; - - bp = port_Board(port); - - if (tty_port_close_start(&port->port, tty, filp) == 0) - return; /* * At this point we stop accepting input. To do this, we @@ -944,31 +949,37 @@ static void rc_close(struct tty_struct *tty, struct file *filp) */ spin_lock_irqsave(&riscom_lock, flags); - port->IER &= ~IER_RXD; - if (port->port.flags & ASYNC_INITIALIZED) { - port->IER &= ~IER_TXRDY; - port->IER |= IER_TXEMPTY; - rc_out(bp, CD180_CAR, port_No(port)); - rc_out(bp, CD180_IER, port->IER); + rp->IER &= ~IER_RXD; + if (port->flags & ASYNC_INITIALIZED) { + rp->IER &= ~IER_TXRDY; + rp->IER |= IER_TXEMPTY; + rc_out(bp, CD180_CAR, port_No(rp)); + rc_out(bp, CD180_IER, rp->IER); /* * Before we drop DTR, make sure the UART transmitter * has completely drained; this is especially * important if there is a transmit FIFO! */ timeout = jiffies + HZ; - while (port->IER & IER_TXEMPTY) { + while (rp->IER & IER_TXEMPTY) { spin_unlock_irqrestore(&riscom_lock, flags); - msleep_interruptible(jiffies_to_msecs(port->timeout)); + msleep_interruptible(jiffies_to_msecs(rp->timeout)); spin_lock_irqsave(&riscom_lock, flags); if (time_after(jiffies, timeout)) break; } } - rc_shutdown_port(tty, bp, port); - rc_flush_buffer(tty); + rc_shutdown_port(port->tty, bp, rp); spin_unlock_irqrestore(&riscom_lock, flags); +} + +static void rc_close(struct tty_struct *tty, struct file *filp) +{ + struct riscom_port *port = tty->driver_data; - tty_port_close_end(&port->port, tty); + if (!port || rc_paranoia_check(port, tty->name, "close")) + return; + tty_port_close(&port->port, tty, filp); } static int rc_write(struct tty_struct *tty, @@ -1170,7 +1181,7 @@ static int rc_send_break(struct tty_struct *tty, int length) return 0; } -static int rc_set_serial_info(struct riscom_port *port, +static int rc_set_serial_info(struct tty_struct *tty, struct riscom_port *port, struct serial_struct __user *newinfo) { struct serial_struct tmp; @@ -1180,17 +1191,6 @@ static int rc_set_serial_info(struct riscom_port *port, if (copy_from_user(&tmp, newinfo, sizeof(tmp))) return -EFAULT; -#if 0 - if ((tmp.irq != bp->irq) || - (tmp.port != bp->base) || - (tmp.type != PORT_CIRRUS) || - (tmp.baud_base != (RC_OSCFREQ + CD180_TPC/2) / CD180_TPC) || - (tmp.custom_divisor != 0) || - (tmp.xmit_fifo_size != CD180_NFIFO) || - (tmp.flags & ~RISCOM_LEGAL_FLAGS)) - return -EINVAL; -#endif - change_speed = ((port->port.flags & ASYNC_SPD_MASK) != (tmp.flags & ASYNC_SPD_MASK)); @@ -1212,7 +1212,7 @@ static int rc_set_serial_info(struct riscom_port *port, unsigned long flags; spin_lock_irqsave(&riscom_lock, flags); - rc_change_speed(bp, port); + rc_change_speed(tty, bp, port); spin_unlock_irqrestore(&riscom_lock, flags); } return 0; @@ -1255,7 +1255,7 @@ static int rc_ioctl(struct tty_struct *tty, struct file *filp, break; case TIOCSSERIAL: lock_kernel(); - retval = rc_set_serial_info(port, argp); + retval = rc_set_serial_info(tty, port, argp); unlock_kernel(); break; default: @@ -1350,21 +1350,12 @@ static void rc_start(struct tty_struct *tty) static void rc_hangup(struct tty_struct *tty) { struct riscom_port *port = tty->driver_data; - struct riscom_board *bp; - unsigned long flags; if (rc_paranoia_check(port, tty->name, "rc_hangup")) return; - bp = port_Board(port); - - rc_shutdown_port(tty, bp, port); - spin_lock_irqsave(&port->port.lock, flags); - port->port.count = 0; - port->port.flags &= ~ASYNC_NORMAL_ACTIVE; - port->port.tty = NULL; - wake_up_interruptible(&port->port.open_wait); - spin_unlock_irqrestore(&port->port.lock, flags); + rc_shutdown_port(tty, port_Board(port), port); + tty_port_hangup(&port->port); } static void rc_set_termios(struct tty_struct *tty, @@ -1377,7 +1368,7 @@ static void rc_set_termios(struct tty_struct *tty, return; spin_lock_irqsave(&riscom_lock, flags); - rc_change_speed(port_Board(port), port); + rc_change_speed(tty, port_Board(port), port); spin_unlock_irqrestore(&riscom_lock, flags); if ((old_termios->c_cflag & CRTSCTS) && @@ -1410,6 +1401,7 @@ static const struct tty_operations riscom_ops = { static const struct tty_port_operations riscom_port_ops = { .carrier_raised = carrier_raised, + .shutdown = rc_close_port, }; diff --git a/drivers/char/tty_io.c b/drivers/char/tty_io.c index a3afa0c387cd..05f443c47bbe 100644 --- a/drivers/char/tty_io.c +++ b/drivers/char/tty_io.c @@ -1184,6 +1184,7 @@ int tty_init_termios(struct tty_struct *tty) tty->termios->c_ospeed = tty_termios_baud_rate(tty->termios); return 0; } +EXPORT_SYMBOL_GPL(tty_init_termios); /** * tty_driver_install_tty() - install a tty entry in the driver @@ -1386,10 +1387,14 @@ EXPORT_SYMBOL(tty_shutdown); * tty_mutex - sometimes only * takes the file list lock internally when working on the list * of ttys that the driver keeps. + * + * This method gets called from a work queue so that the driver private + * shutdown ops can sleep (needed for USB at least) */ -static void release_one_tty(struct kref *kref) +static void release_one_tty(struct work_struct *work) { - struct tty_struct *tty = container_of(kref, struct tty_struct, kref); + struct tty_struct *tty = + container_of(work, struct tty_struct, hangup_work); struct tty_driver *driver = tty->driver; if (tty->ops->shutdown) @@ -1407,6 +1412,15 @@ static void release_one_tty(struct kref *kref) free_tty_struct(tty); } +static void queue_release_one_tty(struct kref *kref) +{ + struct tty_struct *tty = container_of(kref, struct tty_struct, kref); + /* The hangup queue is now free so we can reuse it rather than + waste a chunk of memory for each port */ + INIT_WORK(&tty->hangup_work, release_one_tty); + schedule_work(&tty->hangup_work); +} + /** * tty_kref_put - release a tty kref * @tty: tty device @@ -1418,7 +1432,7 @@ static void release_one_tty(struct kref *kref) void tty_kref_put(struct tty_struct *tty) { if (tty) - kref_put(&tty->kref, release_one_tty); + kref_put(&tty->kref, queue_release_one_tty); } EXPORT_SYMBOL(tty_kref_put); @@ -2085,7 +2099,7 @@ static int tioccons(struct file *file) * the generic functionality existed. This piece of history is preserved * in the expected tty API of posix OS's. * - * Locking: none, the open fle handle ensures it won't go away. + * Locking: none, the open file handle ensures it won't go away. */ static int fionbio(struct file *file, int __user *p) diff --git a/drivers/char/tty_ioctl.c b/drivers/char/tty_ioctl.c index ad6ba4ed2808..8e67d5c642a4 100644 --- a/drivers/char/tty_ioctl.c +++ b/drivers/char/tty_ioctl.c @@ -393,9 +393,7 @@ void tty_termios_encode_baud_rate(struct ktermios *termios, termios->c_cflag |= (BOTHER << IBSHIFT); #else if (ifound == -1 || ofound == -1) { - static int warned; - if (!warned++) - printk(KERN_WARNING "tty: Unable to return correct " + printk_once(KERN_WARNING "tty: Unable to return correct " "speed data as your architecture needs updating.\n"); } #endif diff --git a/drivers/char/tty_ldisc.c b/drivers/char/tty_ldisc.c index e48af9f79219..aafdbaebc16a 100644 --- a/drivers/char/tty_ldisc.c +++ b/drivers/char/tty_ldisc.c @@ -145,48 +145,33 @@ int tty_unregister_ldisc(int disc) } EXPORT_SYMBOL(tty_unregister_ldisc); - -/** - * tty_ldisc_try_get - try and reference an ldisc - * @disc: ldisc number - * - * Attempt to open and lock a line discipline into place. Return - * the line discipline refcounted or an error. - */ - -static struct tty_ldisc *tty_ldisc_try_get(int disc) +static struct tty_ldisc_ops *get_ldops(int disc) { unsigned long flags; - struct tty_ldisc *ld; - struct tty_ldisc_ops *ldops; - int err = -EINVAL; - - ld = kmalloc(sizeof(struct tty_ldisc), GFP_KERNEL); - if (ld == NULL) - return ERR_PTR(-ENOMEM); + struct tty_ldisc_ops *ldops, *ret; spin_lock_irqsave(&tty_ldisc_lock, flags); - ld->ops = NULL; + ret = ERR_PTR(-EINVAL); ldops = tty_ldiscs[disc]; - /* Check the entry is defined */ if (ldops) { - /* If the module is being unloaded we can't use it */ - if (!try_module_get(ldops->owner)) - err = -EAGAIN; - else { - /* lock it */ + ret = ERR_PTR(-EAGAIN); + if (try_module_get(ldops->owner)) { ldops->refcount++; - ld->ops = ldops; - atomic_set(&ld->users, 1); - err = 0; + ret = ldops; } } spin_unlock_irqrestore(&tty_ldisc_lock, flags); - if (err) { - kfree(ld); - return ERR_PTR(err); - } - return ld; + return ret; +} + +static void put_ldops(struct tty_ldisc_ops *ldops) +{ + unsigned long flags; + + spin_lock_irqsave(&tty_ldisc_lock, flags); + ldops->refcount--; + module_put(ldops->owner); + spin_unlock_irqrestore(&tty_ldisc_lock, flags); } /** @@ -205,14 +190,31 @@ static struct tty_ldisc *tty_ldisc_try_get(int disc) static struct tty_ldisc *tty_ldisc_get(int disc) { struct tty_ldisc *ld; + struct tty_ldisc_ops *ldops; if (disc < N_TTY || disc >= NR_LDISCS) return ERR_PTR(-EINVAL); - ld = tty_ldisc_try_get(disc); - if (IS_ERR(ld)) { + + /* + * Get the ldisc ops - we may need to request them to be loaded + * dynamically and try again. + */ + ldops = get_ldops(disc); + if (IS_ERR(ldops)) { request_module("tty-ldisc-%d", disc); - ld = tty_ldisc_try_get(disc); + ldops = get_ldops(disc); + if (IS_ERR(ldops)) + return ERR_CAST(ldops); } + + ld = kmalloc(sizeof(struct tty_ldisc), GFP_KERNEL); + if (ld == NULL) { + put_ldops(ldops); + return ERR_PTR(-ENOMEM); + } + + ld->ops = ldops; + atomic_set(&ld->users, 1); return ld; } @@ -234,13 +236,13 @@ static void tty_ldiscs_seq_stop(struct seq_file *m, void *v) static int tty_ldiscs_seq_show(struct seq_file *m, void *v) { int i = *(loff_t *)v; - struct tty_ldisc *ld; + struct tty_ldisc_ops *ldops; - ld = tty_ldisc_try_get(i); - if (IS_ERR(ld)) + ldops = get_ldops(i); + if (IS_ERR(ldops)) return 0; - seq_printf(m, "%-10s %2d\n", ld->ops->name ? ld->ops->name : "???", i); - put_ldisc(ld); + seq_printf(m, "%-10s %2d\n", ldops->name ? ldops->name : "???", i); + put_ldops(ldops); return 0; } diff --git a/drivers/char/tty_port.c b/drivers/char/tty_port.c index 9769b1149f76..a4bbb28f10be 100644 --- a/drivers/char/tty_port.c +++ b/drivers/char/tty_port.c @@ -23,6 +23,7 @@ void tty_port_init(struct tty_port *port) memset(port, 0, sizeof(*port)); init_waitqueue_head(&port->open_wait); init_waitqueue_head(&port->close_wait); + init_waitqueue_head(&port->delta_msr_wait); mutex_init(&port->mutex); spin_lock_init(&port->lock); port->close_delay = (50 * HZ) / 100; @@ -96,6 +97,14 @@ void tty_port_tty_set(struct tty_port *port, struct tty_struct *tty) } EXPORT_SYMBOL(tty_port_tty_set); +static void tty_port_shutdown(struct tty_port *port) +{ + if (port->ops->shutdown && + test_and_clear_bit(ASYNCB_INITIALIZED, &port->flags)) + port->ops->shutdown(port); + +} + /** * tty_port_hangup - hangup helper * @port: tty port @@ -116,6 +125,8 @@ void tty_port_hangup(struct tty_port *port) port->tty = NULL; spin_unlock_irqrestore(&port->lock, flags); wake_up_interruptible(&port->open_wait); + wake_up_interruptible(&port->delta_msr_wait); + tty_port_shutdown(port); } EXPORT_SYMBOL(tty_port_hangup); @@ -296,15 +307,17 @@ int tty_port_close_start(struct tty_port *port, struct tty_struct *tty, struct f if (port->count) { spin_unlock_irqrestore(&port->lock, flags); + if (port->ops->drop) + port->ops->drop(port); return 0; } - port->flags |= ASYNC_CLOSING; + set_bit(ASYNCB_CLOSING, &port->flags); tty->closing = 1; spin_unlock_irqrestore(&port->lock, flags); /* Don't block on a stalled port, just pull the chain */ if (tty->flow_stopped) tty_driver_flush_buffer(tty); - if (port->flags & ASYNC_INITIALIZED && + if (test_bit(ASYNCB_INITIALIZED, &port->flags) && port->closing_wait != ASYNC_CLOSING_WAIT_NONE) tty_wait_until_sent(tty, port->closing_wait); if (port->drain_delay) { @@ -318,6 +331,9 @@ int tty_port_close_start(struct tty_port *port, struct tty_struct *tty, struct f timeout = 2 * HZ; schedule_timeout_interruptible(timeout); } + /* Don't call port->drop for the last reference. Callers will want + to drop the last active reference in ->shutdown() or the tty + shutdown path */ return 1; } EXPORT_SYMBOL(tty_port_close_start); @@ -348,3 +364,14 @@ void tty_port_close_end(struct tty_port *port, struct tty_struct *tty) spin_unlock_irqrestore(&port->lock, flags); } EXPORT_SYMBOL(tty_port_close_end); + +void tty_port_close(struct tty_port *port, struct tty_struct *tty, + struct file *filp) +{ + if (tty_port_close_start(port, tty, filp) == 0) + return; + tty_port_shutdown(port); + tty_port_close_end(port, tty); + tty_port_tty_set(port, NULL); +} +EXPORT_SYMBOL(tty_port_close); diff --git a/drivers/char/vt.c b/drivers/char/vt.c index 6aa88f50b039..0c80c68cd047 100644 --- a/drivers/char/vt.c +++ b/drivers/char/vt.c @@ -252,7 +252,6 @@ static void notify_update(struct vc_data *vc) struct vt_notifier_param param = { .vc = vc }; atomic_notifier_call_chain(&vt_notifier_list, VT_UPDATE, ¶m); } - /* * Low-Level Functions */ @@ -935,6 +934,7 @@ static int vc_do_resize(struct tty_struct *tty, struct vc_data *vc, if (CON_IS_VISIBLE(vc)) update_screen(vc); + vt_event_post(VT_EVENT_RESIZE, vc->vc_num, vc->vc_num); return err; } @@ -2129,11 +2129,7 @@ static int do_con_write(struct tty_struct *tty, const unsigned char *buf, int co currcons = vc->vc_num; if (!vc_cons_allocated(currcons)) { /* could this happen? */ - static int error = 0; - if (!error) { - error = 1; - printk("con_write: tty %d not allocated\n", currcons+1); - } + printk_once("con_write: tty %d not allocated\n", currcons+1); release_console_sem(); return 0; } @@ -2910,6 +2906,9 @@ static const struct tty_operations con_ops = { .flush_chars = con_flush_chars, .chars_in_buffer = con_chars_in_buffer, .ioctl = vt_ioctl, +#ifdef CONFIG_COMPAT + .compat_ioctl = vt_compat_ioctl, +#endif .stop = con_stop, .start = con_start, .throttle = con_throttle, @@ -2955,7 +2954,6 @@ int __init vty_init(const struct file_operations *console_fops) } #ifndef VT_SINGLE_DRIVER -#include <linux/device.h> static struct class *vtconsole_class; @@ -3638,6 +3636,7 @@ void do_blank_screen(int entering_gfx) blank_state = blank_vesa_wait; mod_timer(&console_timer, jiffies + vesa_off_interval); } + vt_event_post(VT_EVENT_BLANK, vc->vc_num, vc->vc_num); } EXPORT_SYMBOL(do_blank_screen); @@ -3682,6 +3681,7 @@ void do_unblank_screen(int leaving_gfx) console_blank_hook(0); set_palette(vc); set_cursor(vc); + vt_event_post(VT_EVENT_UNBLANK, vc->vc_num, vc->vc_num); } EXPORT_SYMBOL(do_unblank_screen); diff --git a/drivers/char/vt_ioctl.c b/drivers/char/vt_ioctl.c index 95189f288f8c..29c651ab0d78 100644 --- a/drivers/char/vt_ioctl.c +++ b/drivers/char/vt_ioctl.c @@ -16,6 +16,8 @@ #include <linux/tty.h> #include <linux/timer.h> #include <linux/kernel.h> +#include <linux/compat.h> +#include <linux/module.h> #include <linux/kd.h> #include <linux/vt.h> #include <linux/string.h> @@ -62,6 +64,133 @@ extern struct tty_driver *console_driver; static void complete_change_console(struct vc_data *vc); /* + * User space VT_EVENT handlers + */ + +struct vt_event_wait { + struct list_head list; + struct vt_event event; + int done; +}; + +static LIST_HEAD(vt_events); +static DEFINE_SPINLOCK(vt_event_lock); +static DECLARE_WAIT_QUEUE_HEAD(vt_event_waitqueue); + +/** + * vt_event_post + * @event: the event that occurred + * @old: old console + * @new: new console + * + * Post an VT event to interested VT handlers + */ + +void vt_event_post(unsigned int event, unsigned int old, unsigned int new) +{ + struct list_head *pos, *head; + unsigned long flags; + int wake = 0; + + spin_lock_irqsave(&vt_event_lock, flags); + head = &vt_events; + + list_for_each(pos, head) { + struct vt_event_wait *ve = list_entry(pos, + struct vt_event_wait, list); + if (!(ve->event.event & event)) + continue; + ve->event.event = event; + /* kernel view is consoles 0..n-1, user space view is + console 1..n with 0 meaning current, so we must bias */ + ve->event.old = old + 1; + ve->event.new = new + 1; + wake = 1; + ve->done = 1; + } + spin_unlock_irqrestore(&vt_event_lock, flags); + if (wake) + wake_up_interruptible(&vt_event_waitqueue); +} + +/** + * vt_event_wait - wait for an event + * @vw: our event + * + * Waits for an event to occur which completes our vt_event_wait + * structure. On return the structure has wv->done set to 1 for success + * or 0 if some event such as a signal ended the wait. + */ + +static void vt_event_wait(struct vt_event_wait *vw) +{ + unsigned long flags; + /* Prepare the event */ + INIT_LIST_HEAD(&vw->list); + vw->done = 0; + /* Queue our event */ + spin_lock_irqsave(&vt_event_lock, flags); + list_add(&vw->list, &vt_events); + spin_unlock_irqrestore(&vt_event_lock, flags); + /* Wait for it to pass */ + wait_event_interruptible(vt_event_waitqueue, vw->done); + /* Dequeue it */ + spin_lock_irqsave(&vt_event_lock, flags); + list_del(&vw->list); + spin_unlock_irqrestore(&vt_event_lock, flags); +} + +/** + * vt_event_wait_ioctl - event ioctl handler + * @arg: argument to ioctl + * + * Implement the VT_WAITEVENT ioctl using the VT event interface + */ + +static int vt_event_wait_ioctl(struct vt_event __user *event) +{ + struct vt_event_wait vw; + + if (copy_from_user(&vw.event, event, sizeof(struct vt_event))) + return -EFAULT; + /* Highest supported event for now */ + if (vw.event.event & ~VT_MAX_EVENT) + return -EINVAL; + + vt_event_wait(&vw); + /* If it occurred report it */ + if (vw.done) { + if (copy_to_user(event, &vw.event, sizeof(struct vt_event))) + return -EFAULT; + return 0; + } + return -EINTR; +} + +/** + * vt_waitactive - active console wait + * @event: event code + * @n: new console + * + * Helper for event waits. Used to implement the legacy + * event waiting ioctls in terms of events + */ + +int vt_waitactive(int n) +{ + struct vt_event_wait vw; + do { + if (n == fg_console + 1) + break; + vw.event.event = VT_EVENT_SWITCH; + vt_event_wait(&vw); + if (vw.done == 0) + return -EINTR; + } while (vw.event.new != n); + return 0; +} + +/* * these are the valid i/o ports we're allowed to change. they map all the * video ports */ @@ -360,6 +489,8 @@ do_unimap_ioctl(int cmd, struct unimapdesc __user *user_ud, int perm, struct vc_ return 0; } + + /* * We handle the console-specific ioctl's here. We allow the * capability to modify any console, not just the fg_console. @@ -842,6 +973,41 @@ int vt_ioctl(struct tty_struct *tty, struct file * file, } break; + case VT_SETACTIVATE: + { + struct vt_setactivate vsa; + + if (!perm) + goto eperm; + + if (copy_from_user(&vsa, (struct vt_setactivate __user *)arg, + sizeof(struct vt_setactivate))) + return -EFAULT; + if (vsa.console == 0 || vsa.console > MAX_NR_CONSOLES) + ret = -ENXIO; + else { + vsa.console--; + acquire_console_sem(); + ret = vc_allocate(vsa.console); + if (ret == 0) { + struct vc_data *nvc; + /* This is safe providing we don't drop the + console sem between vc_allocate and + finishing referencing nvc */ + nvc = vc_cons[vsa.console].d; + nvc->vt_mode = vsa.mode; + nvc->vt_mode.frsig = 0; + put_pid(nvc->vt_pid); + nvc->vt_pid = get_pid(task_pid(current)); + } + release_console_sem(); + if (ret) + break; + /* Commence switch and lock */ + set_console(arg); + } + } + /* * wait until the specified VT has been activated */ @@ -851,7 +1017,7 @@ int vt_ioctl(struct tty_struct *tty, struct file * file, if (arg == 0 || arg > MAX_NR_CONSOLES) ret = -ENXIO; else - ret = vt_waitactive(arg - 1); + ret = vt_waitactive(arg); break; /* @@ -1159,6 +1325,9 @@ int vt_ioctl(struct tty_struct *tty, struct file * file, ret = put_user(vc->vc_hi_font_mask, (unsigned short __user *)arg); break; + case VT_WAITEVENT: + ret = vt_event_wait_ioctl((struct vt_event __user *)arg); + break; default: ret = -ENOIOCTLCMD; } @@ -1170,54 +1339,6 @@ eperm: goto out; } -/* - * Sometimes we want to wait until a particular VT has been activated. We - * do it in a very simple manner. Everybody waits on a single queue and - * get woken up at once. Those that are satisfied go on with their business, - * while those not ready go back to sleep. Seems overkill to add a wait - * to each vt just for this - usually this does nothing! - */ -static DECLARE_WAIT_QUEUE_HEAD(vt_activate_queue); - -/* - * Sleeps until a vt is activated, or the task is interrupted. Returns - * 0 if activation, -EINTR if interrupted by a signal handler. - */ -int vt_waitactive(int vt) -{ - int retval; - DECLARE_WAITQUEUE(wait, current); - - add_wait_queue(&vt_activate_queue, &wait); - for (;;) { - retval = 0; - - /* - * Synchronize with redraw_screen(). By acquiring the console - * semaphore we make sure that the console switch is completed - * before we return. If we didn't wait for the semaphore, we - * could return at a point where fg_console has already been - * updated, but the console switch hasn't been completed. - */ - acquire_console_sem(); - set_current_state(TASK_INTERRUPTIBLE); - if (vt == fg_console) { - release_console_sem(); - break; - } - release_console_sem(); - retval = -ERESTARTNOHAND; - if (signal_pending(current)) - break; - schedule(); - } - remove_wait_queue(&vt_activate_queue, &wait); - __set_current_state(TASK_RUNNING); - return retval; -} - -#define vt_wake_waitactive() wake_up(&vt_activate_queue) - void reset_vc(struct vc_data *vc) { vc->vc_mode = KD_TEXT; @@ -1256,12 +1377,216 @@ void vc_SAK(struct work_struct *work) release_console_sem(); } +#ifdef CONFIG_COMPAT + +struct compat_consolefontdesc { + unsigned short charcount; /* characters in font (256 or 512) */ + unsigned short charheight; /* scan lines per character (1-32) */ + compat_caddr_t chardata; /* font data in expanded form */ +}; + +static inline int +compat_fontx_ioctl(int cmd, struct compat_consolefontdesc __user *user_cfd, + int perm, struct console_font_op *op) +{ + struct compat_consolefontdesc cfdarg; + int i; + + if (copy_from_user(&cfdarg, user_cfd, sizeof(struct compat_consolefontdesc))) + return -EFAULT; + + switch (cmd) { + case PIO_FONTX: + if (!perm) + return -EPERM; + op->op = KD_FONT_OP_SET; + op->flags = KD_FONT_FLAG_OLD; + op->width = 8; + op->height = cfdarg.charheight; + op->charcount = cfdarg.charcount; + op->data = compat_ptr(cfdarg.chardata); + return con_font_op(vc_cons[fg_console].d, op); + case GIO_FONTX: + op->op = KD_FONT_OP_GET; + op->flags = KD_FONT_FLAG_OLD; + op->width = 8; + op->height = cfdarg.charheight; + op->charcount = cfdarg.charcount; + op->data = compat_ptr(cfdarg.chardata); + i = con_font_op(vc_cons[fg_console].d, op); + if (i) + return i; + cfdarg.charheight = op->height; + cfdarg.charcount = op->charcount; + if (copy_to_user(user_cfd, &cfdarg, sizeof(struct compat_consolefontdesc))) + return -EFAULT; + return 0; + } + return -EINVAL; +} + +struct compat_console_font_op { + compat_uint_t op; /* operation code KD_FONT_OP_* */ + compat_uint_t flags; /* KD_FONT_FLAG_* */ + compat_uint_t width, height; /* font size */ + compat_uint_t charcount; + compat_caddr_t data; /* font data with height fixed to 32 */ +}; + +static inline int +compat_kdfontop_ioctl(struct compat_console_font_op __user *fontop, + int perm, struct console_font_op *op, struct vc_data *vc) +{ + int i; + + if (copy_from_user(op, fontop, sizeof(struct compat_console_font_op))) + return -EFAULT; + if (!perm && op->op != KD_FONT_OP_GET) + return -EPERM; + op->data = compat_ptr(((struct compat_console_font_op *)op)->data); + op->flags |= KD_FONT_FLAG_OLD; + i = con_font_op(vc, op); + if (i) + return i; + ((struct compat_console_font_op *)op)->data = (unsigned long)op->data; + if (copy_to_user(fontop, op, sizeof(struct compat_console_font_op))) + return -EFAULT; + return 0; +} + +struct compat_unimapdesc { + unsigned short entry_ct; + compat_caddr_t entries; +}; + +static inline int +compat_unimap_ioctl(unsigned int cmd, struct compat_unimapdesc __user *user_ud, + int perm, struct vc_data *vc) +{ + struct compat_unimapdesc tmp; + struct unipair __user *tmp_entries; + + if (copy_from_user(&tmp, user_ud, sizeof tmp)) + return -EFAULT; + tmp_entries = compat_ptr(tmp.entries); + if (tmp_entries) + if (!access_ok(VERIFY_WRITE, tmp_entries, + tmp.entry_ct*sizeof(struct unipair))) + return -EFAULT; + switch (cmd) { + case PIO_UNIMAP: + if (!perm) + return -EPERM; + return con_set_unimap(vc, tmp.entry_ct, tmp_entries); + case GIO_UNIMAP: + if (!perm && fg_console != vc->vc_num) + return -EPERM; + return con_get_unimap(vc, tmp.entry_ct, &(user_ud->entry_ct), tmp_entries); + } + return 0; +} + +long vt_compat_ioctl(struct tty_struct *tty, struct file * file, + unsigned int cmd, unsigned long arg) +{ + struct vc_data *vc = tty->driver_data; + struct console_font_op op; /* used in multiple places here */ + struct kbd_struct *kbd; + unsigned int console; + void __user *up = (void __user *)arg; + int perm; + int ret = 0; + + console = vc->vc_num; + + lock_kernel(); + + if (!vc_cons_allocated(console)) { /* impossible? */ + ret = -ENOIOCTLCMD; + goto out; + } + + /* + * To have permissions to do most of the vt ioctls, we either have + * to be the owner of the tty, or have CAP_SYS_TTY_CONFIG. + */ + perm = 0; + if (current->signal->tty == tty || capable(CAP_SYS_TTY_CONFIG)) + perm = 1; + + kbd = kbd_table + console; + switch (cmd) { + /* + * these need special handlers for incompatible data structures + */ + case PIO_FONTX: + case GIO_FONTX: + ret = compat_fontx_ioctl(cmd, up, perm, &op); + break; + + case KDFONTOP: + ret = compat_kdfontop_ioctl(up, perm, &op, vc); + break; + + case PIO_UNIMAP: + case GIO_UNIMAP: + ret = do_unimap_ioctl(cmd, up, perm, vc); + break; + + /* + * all these treat 'arg' as an integer + */ + case KIOCSOUND: + case KDMKTONE: +#ifdef CONFIG_X86 + case KDADDIO: + case KDDELIO: +#endif + case KDSETMODE: + case KDMAPDISP: + case KDUNMAPDISP: + case KDSKBMODE: + case KDSKBMETA: + case KDSKBLED: + case KDSETLED: + case KDSIGACCEPT: + case VT_ACTIVATE: + case VT_WAITACTIVE: + case VT_RELDISP: + case VT_DISALLOCATE: + case VT_RESIZE: + case VT_RESIZEX: + goto fallback; + + /* + * the rest has a compatible data structure behind arg, + * but we have to convert it to a proper 64 bit pointer. + */ + default: + arg = (unsigned long)compat_ptr(arg); + goto fallback; + } +out: + unlock_kernel(); + return ret; + +fallback: + unlock_kernel(); + return vt_ioctl(tty, file, cmd, arg); +} + + +#endif /* CONFIG_COMPAT */ + + /* - * Performs the back end of a vt switch + * Performs the back end of a vt switch. Called under the console + * semaphore. */ static void complete_change_console(struct vc_data *vc) { unsigned char old_vc_mode; + int old = fg_console; last_console = fg_console; @@ -1325,7 +1650,7 @@ static void complete_change_console(struct vc_data *vc) /* * Wake anyone waiting for their VT to activate */ - vt_wake_waitactive(); + vt_event_post(VT_EVENT_SWITCH, old, vc->vc_num); return; } @@ -1398,3 +1723,58 @@ void change_console(struct vc_data *new_vc) complete_change_console(new_vc); } + +/* Perform a kernel triggered VT switch for suspend/resume */ + +static int disable_vt_switch; + +int vt_move_to_console(unsigned int vt, int alloc) +{ + int prev; + + acquire_console_sem(); + /* Graphics mode - up to X */ + if (disable_vt_switch) { + release_console_sem(); + return 0; + } + prev = fg_console; + + if (alloc && vc_allocate(vt)) { + /* we can't have a free VC for now. Too bad, + * we don't want to mess the screen for now. */ + release_console_sem(); + return -ENOSPC; + } + + if (set_console(vt)) { + /* + * We're unable to switch to the SUSPEND_CONSOLE. + * Let the calling function know so it can decide + * what to do. + */ + release_console_sem(); + return -EIO; + } + release_console_sem(); + if (vt_waitactive(vt + 1)) { + pr_debug("Suspend: Can't switch VCs."); + return -EINTR; + } + return prev; +} + +/* + * Normally during a suspend, we allocate a new console and switch to it. + * When we resume, we switch back to the original console. This switch + * can be slow, so on systems where the framebuffer can handle restoration + * of video registers anyways, there's little point in doing the console + * switch. This function allows you to disable it by passing it '0'. + */ +void pm_set_vt_switch(int do_switch) +{ + acquire_console_sem(); + disable_vt_switch = !do_switch; + release_console_sem(); +} +EXPORT_SYMBOL(pm_set_vt_switch); diff --git a/drivers/isdn/gigaset/interface.c b/drivers/isdn/gigaset/interface.c index 8ff7e35c7069..f33ac27de643 100644 --- a/drivers/isdn/gigaset/interface.c +++ b/drivers/isdn/gigaset/interface.c @@ -408,33 +408,28 @@ static int if_write_room(struct tty_struct *tty) return retval; } -/* FIXME: This function does not have error returns */ - static int if_chars_in_buffer(struct tty_struct *tty) { struct cardstate *cs; - int retval = -ENODEV; + int retval = 0; cs = (struct cardstate *) tty->driver_data; if (!cs) { pr_err("%s: no cardstate\n", __func__); - return -ENODEV; + return 0; } gig_dbg(DEBUG_IF, "%u: %s()", cs->minor_index, __func__); - if (mutex_lock_interruptible(&cs->mutex)) - return -ERESTARTSYS; // FIXME -EINTR? + mutex_lock(&cs->mutex); - if (!cs->connected) { + if (!cs->connected) gig_dbg(DEBUG_IF, "not connected"); - retval = -ENODEV; - } else if (!cs->open_count) + else if (!cs->open_count) dev_warn(cs->dev, "%s: device not opened\n", __func__); - else if (cs->mstate != MS_LOCKED) { + else if (cs->mstate != MS_LOCKED) dev_warn(cs->dev, "can't write to unlocked device\n"); - retval = -EBUSY; - } else + else retval = cs->ops->chars_in_buffer(cs); mutex_unlock(&cs->mutex); diff --git a/drivers/net/slip.c b/drivers/net/slip.c index 26f6ee93a064..e17c535a577e 100644 --- a/drivers/net/slip.c +++ b/drivers/net/slip.c @@ -616,6 +616,14 @@ static void sl_uninit(struct net_device *dev) sl_free_bufs(sl); } +/* Hook the destructor so we can free slip devices at the right point in time */ +static void sl_free_netdev(struct net_device *dev) +{ + int i = dev->base_addr; + free_netdev(dev); + slip_devs[i] = NULL; +} + static const struct net_device_ops sl_netdev_ops = { .ndo_init = sl_init, .ndo_uninit = sl_uninit, @@ -634,7 +642,7 @@ static const struct net_device_ops sl_netdev_ops = { static void sl_setup(struct net_device *dev) { dev->netdev_ops = &sl_netdev_ops; - dev->destructor = free_netdev; + dev->destructor = sl_free_netdev; dev->hard_header_len = 0; dev->addr_len = 0; @@ -712,8 +720,6 @@ static void sl_sync(void) static struct slip *sl_alloc(dev_t line) { int i; - int sel = -1; - int score = -1; struct net_device *dev = NULL; struct slip *sl; @@ -724,55 +730,7 @@ static struct slip *sl_alloc(dev_t line) dev = slip_devs[i]; if (dev == NULL) break; - - sl = netdev_priv(dev); - if (sl->leased) { - if (sl->line != line) - continue; - if (sl->tty) - return NULL; - - /* Clear ESCAPE & ERROR flags */ - sl->flags &= (1 << SLF_INUSE); - return sl; - } - - if (sl->tty) - continue; - - if (current->pid == sl->pid) { - if (sl->line == line && score < 3) { - sel = i; - score = 3; - continue; - } - if (score < 2) { - sel = i; - score = 2; - } - continue; - } - if (sl->line == line && score < 1) { - sel = i; - score = 1; - continue; - } - if (score < 0) { - sel = i; - score = 0; - } - } - - if (sel >= 0) { - i = sel; - dev = slip_devs[i]; - if (score > 1) { - sl = netdev_priv(dev); - sl->flags &= (1 << SLF_INUSE); - return sl; - } } - /* Sorry, too many, all slots in use */ if (i >= slip_maxdev) return NULL; @@ -909,30 +867,13 @@ err_exit: } /* - - FIXME: 1,2 are fixed 3 was never true anyway. - - Let me to blame a bit. - 1. TTY module calls this funstion on soft interrupt. - 2. TTY module calls this function WITH MASKED INTERRUPTS! - 3. TTY module does not notify us about line discipline - shutdown, - - Seems, now it is clean. The solution is to consider netdevice and - line discipline sides as two independent threads. - - By-product (not desired): sl? does not feel hangups and remains open. - It is supposed, that user level program (dip, diald, slattach...) - will catch SIGHUP and make the rest of work. - - I see no way to make more with current tty code. --ANK - */ - -/* * Close down a SLIP channel. * This means flushing out any pending queues, and then returning. This * call is serialized against other ldisc functions. + * + * We also use this method fo a hangup event */ + static void slip_close(struct tty_struct *tty) { struct slip *sl = tty->disc_data; @@ -951,10 +892,16 @@ static void slip_close(struct tty_struct *tty) del_timer_sync(&sl->keepalive_timer); del_timer_sync(&sl->outfill_timer); #endif - - /* Count references from TTY module */ + /* Flush network side */ + unregister_netdev(sl->dev); + /* This will complete via sl_free_netdev */ } +static int slip_hangup(struct tty_struct *tty) +{ + slip_close(tty); + return 0; +} /************************************************************************ * STANDARD SLIP ENCAPSULATION * ************************************************************************/ @@ -1311,6 +1258,7 @@ static struct tty_ldisc_ops sl_ldisc = { .name = "slip", .open = slip_open, .close = slip_close, + .hangup = slip_hangup, .ioctl = slip_ioctl, .receive_buf = slip_receive_buf, .write_wakeup = slip_write_wakeup, @@ -1384,6 +1332,8 @@ static void __exit slip_exit(void) } } while (busy && time_before(jiffies, timeout)); + /* FIXME: hangup is async so we should wait when doing this second + phase */ for (i = 0; i < slip_maxdev; i++) { dev = slip_devs[i]; diff --git a/drivers/serial/21285.c b/drivers/serial/21285.c index cb6d85d7ff43..1e3d19397a59 100644 --- a/drivers/serial/21285.c +++ b/drivers/serial/21285.c @@ -86,7 +86,7 @@ static void serial21285_enable_ms(struct uart_port *port) static irqreturn_t serial21285_rx_chars(int irq, void *dev_id) { struct uart_port *port = dev_id; - struct tty_struct *tty = port->info->port.tty; + struct tty_struct *tty = port->state->port.tty; unsigned int status, ch, flag, rxs, max_count = 256; status = *CSR_UARTFLG; @@ -124,7 +124,7 @@ static irqreturn_t serial21285_rx_chars(int irq, void *dev_id) static irqreturn_t serial21285_tx_chars(int irq, void *dev_id) { struct uart_port *port = dev_id; - struct circ_buf *xmit = &port->info->xmit; + struct circ_buf *xmit = &port->state->xmit; int count = 256; if (port->x_char) { @@ -235,8 +235,8 @@ serial21285_set_termios(struct uart_port *port, struct ktermios *termios, baud = uart_get_baud_rate(port, termios, old, 0, port->uartclk/16); quot = uart_get_divisor(port, baud); - if (port->info && port->info->port.tty) { - struct tty_struct *tty = port->info->port.tty; + if (port->state && port->state->port.tty) { + struct tty_struct *tty = port->state->port.tty; unsigned int b = port->uartclk / (16 * quot); tty_encode_baud_rate(tty, b, b); } diff --git a/drivers/serial/8250.c b/drivers/serial/8250.c index fb867a9f55e9..2209620d2349 100644 --- a/drivers/serial/8250.c +++ b/drivers/serial/8250.c @@ -1382,7 +1382,7 @@ static void serial8250_enable_ms(struct uart_port *port) static void receive_chars(struct uart_8250_port *up, unsigned int *status) { - struct tty_struct *tty = up->port.info->port.tty; + struct tty_struct *tty = up->port.state->port.tty; unsigned char ch, lsr = *status; int max_count = 256; char flag; @@ -1457,7 +1457,7 @@ ignore_char: static void transmit_chars(struct uart_8250_port *up) { - struct circ_buf *xmit = &up->port.info->xmit; + struct circ_buf *xmit = &up->port.state->xmit; int count; if (up->port.x_char) { @@ -1500,7 +1500,7 @@ static unsigned int check_modem_status(struct uart_8250_port *up) status |= up->msr_saved_flags; up->msr_saved_flags = 0; if (status & UART_MSR_ANY_DELTA && up->ier & UART_IER_MSI && - up->port.info != NULL) { + up->port.state != NULL) { if (status & UART_MSR_TERI) up->port.icount.rng++; if (status & UART_MSR_DDSR) @@ -1510,7 +1510,7 @@ static unsigned int check_modem_status(struct uart_8250_port *up) if (status & UART_MSR_DCTS) uart_handle_cts_change(&up->port, status & UART_MSR_CTS); - wake_up_interruptible(&up->port.info->delta_msr_wait); + wake_up_interruptible(&up->port.state->port.delta_msr_wait); } return status; @@ -1677,7 +1677,7 @@ static int serial_link_irq_chain(struct uart_8250_port *up) INIT_LIST_HEAD(&up->list); i->head = &up->list; spin_unlock_irq(&i->lock); - + irq_flags |= up->port.irqflags; ret = request_irq(up->port.irq, serial8250_interrupt, irq_flags, "serial", i); if (ret < 0) @@ -1764,7 +1764,7 @@ static void serial8250_backup_timeout(unsigned long data) up->lsr_saved_flags |= lsr & LSR_SAVE_FLAGS; spin_unlock_irqrestore(&up->port.lock, flags); if ((iir & UART_IIR_NO_INT) && (up->ier & UART_IER_THRI) && - (!uart_circ_empty(&up->port.info->xmit) || up->port.x_char) && + (!uart_circ_empty(&up->port.state->xmit) || up->port.x_char) && (lsr & UART_LSR_THRE)) { iir &= ~(UART_IIR_ID | UART_IIR_NO_INT); iir |= UART_IIR_THRI; @@ -2026,7 +2026,7 @@ static int serial8250_startup(struct uart_port *port) * allow register changes to become visible. */ spin_lock_irqsave(&up->port.lock, flags); - if (up->port.flags & UPF_SHARE_IRQ) + if (up->port.irqflags & IRQF_SHARED) disable_irq_nosync(up->port.irq); wait_for_xmitr(up, UART_LSR_THRE); @@ -2039,7 +2039,7 @@ static int serial8250_startup(struct uart_port *port) iir = serial_in(up, UART_IIR); serial_out(up, UART_IER, 0); - if (up->port.flags & UPF_SHARE_IRQ) + if (up->port.irqflags & IRQF_SHARED) enable_irq(up->port.irq); spin_unlock_irqrestore(&up->port.lock, flags); @@ -2272,7 +2272,9 @@ serial8250_set_termios(struct uart_port *port, struct ktermios *termios, /* * Ask the core to calculate the divisor for us. */ - baud = uart_get_baud_rate(port, termios, old, 0, port->uartclk/16); + baud = uart_get_baud_rate(port, termios, old, + port->uartclk / 16 / 0xffff, + port->uartclk / 16); quot = serial8250_get_divisor(port, baud); /* @@ -2671,6 +2673,7 @@ static void __init serial8250_isa_init_ports(void) i++, up++) { up->port.iobase = old_serial_port[i].port; up->port.irq = irq_canonicalize(old_serial_port[i].irq); + up->port.irqflags = old_serial_port[i].irqflags; up->port.uartclk = old_serial_port[i].baud_base * 16; up->port.flags = old_serial_port[i].flags; up->port.hub6 = old_serial_port[i].hub6; @@ -2679,7 +2682,7 @@ static void __init serial8250_isa_init_ports(void) up->port.regshift = old_serial_port[i].iomem_reg_shift; set_io_from_upio(&up->port); if (share_irqs) - up->port.flags |= UPF_SHARE_IRQ; + up->port.irqflags |= IRQF_SHARED; } } @@ -2869,6 +2872,7 @@ int __init early_serial_setup(struct uart_port *port) p->iobase = port->iobase; p->membase = port->membase; p->irq = port->irq; + p->irqflags = port->irqflags; p->uartclk = port->uartclk; p->fifosize = port->fifosize; p->regshift = port->regshift; @@ -2942,6 +2946,7 @@ static int __devinit serial8250_probe(struct platform_device *dev) port.iobase = p->iobase; port.membase = p->membase; port.irq = p->irq; + port.irqflags = p->irqflags; port.uartclk = p->uartclk; port.regshift = p->regshift; port.iotype = p->iotype; @@ -2954,7 +2959,7 @@ static int __devinit serial8250_probe(struct platform_device *dev) port.serial_out = p->serial_out; port.dev = &dev->dev; if (share_irqs) - port.flags |= UPF_SHARE_IRQ; + port.irqflags |= IRQF_SHARED; ret = serial8250_register_port(&port); if (ret < 0) { dev_err(&dev->dev, "unable to register port at index %d " @@ -3096,6 +3101,7 @@ int serial8250_register_port(struct uart_port *port) uart->port.iobase = port->iobase; uart->port.membase = port->membase; uart->port.irq = port->irq; + uart->port.irqflags = port->irqflags; uart->port.uartclk = port->uartclk; uart->port.fifosize = port->fifosize; uart->port.regshift = port->regshift; diff --git a/drivers/serial/8250.h b/drivers/serial/8250.h index 520260326f3d..6e19ea3e48d5 100644 --- a/drivers/serial/8250.h +++ b/drivers/serial/8250.h @@ -25,6 +25,7 @@ struct old_serial_port { unsigned char io_type; unsigned char *iomem_base; unsigned short iomem_reg_shift; + unsigned long irqflags; }; /* diff --git a/drivers/serial/amba-pl010.c b/drivers/serial/amba-pl010.c index 58a4879c7e48..429a8ae86933 100644 --- a/drivers/serial/amba-pl010.c +++ b/drivers/serial/amba-pl010.c @@ -117,7 +117,7 @@ static void pl010_enable_ms(struct uart_port *port) static void pl010_rx_chars(struct uart_amba_port *uap) { - struct tty_struct *tty = uap->port.info->port.tty; + struct tty_struct *tty = uap->port.state->port.tty; unsigned int status, ch, flag, rsr, max_count = 256; status = readb(uap->port.membase + UART01x_FR); @@ -172,7 +172,7 @@ static void pl010_rx_chars(struct uart_amba_port *uap) static void pl010_tx_chars(struct uart_amba_port *uap) { - struct circ_buf *xmit = &uap->port.info->xmit; + struct circ_buf *xmit = &uap->port.state->xmit; int count; if (uap->port.x_char) { @@ -225,7 +225,7 @@ static void pl010_modem_status(struct uart_amba_port *uap) if (delta & UART01x_FR_CTS) uart_handle_cts_change(&uap->port, status & UART01x_FR_CTS); - wake_up_interruptible(&uap->port.info->delta_msr_wait); + wake_up_interruptible(&uap->port.state->port.delta_msr_wait); } static irqreturn_t pl010_int(int irq, void *dev_id) diff --git a/drivers/serial/amba-pl011.c b/drivers/serial/amba-pl011.c index 72ba0c6d3551..ef7adc8135dd 100644 --- a/drivers/serial/amba-pl011.c +++ b/drivers/serial/amba-pl011.c @@ -124,7 +124,7 @@ static void pl011_enable_ms(struct uart_port *port) static void pl011_rx_chars(struct uart_amba_port *uap) { - struct tty_struct *tty = uap->port.info->port.tty; + struct tty_struct *tty = uap->port.state->port.tty; unsigned int status, ch, flag, max_count = 256; status = readw(uap->port.membase + UART01x_FR); @@ -175,7 +175,7 @@ static void pl011_rx_chars(struct uart_amba_port *uap) static void pl011_tx_chars(struct uart_amba_port *uap) { - struct circ_buf *xmit = &uap->port.info->xmit; + struct circ_buf *xmit = &uap->port.state->xmit; int count; if (uap->port.x_char) { @@ -226,7 +226,7 @@ static void pl011_modem_status(struct uart_amba_port *uap) if (delta & UART01x_FR_CTS) uart_handle_cts_change(&uap->port, status & UART01x_FR_CTS); - wake_up_interruptible(&uap->port.info->delta_msr_wait); + wake_up_interruptible(&uap->port.state->port.delta_msr_wait); } static irqreturn_t pl011_int(int irq, void *dev_id) diff --git a/drivers/serial/atmel_serial.c b/drivers/serial/atmel_serial.c index 607d43a31048..3551c5cb7094 100644 --- a/drivers/serial/atmel_serial.c +++ b/drivers/serial/atmel_serial.c @@ -427,7 +427,7 @@ static void atmel_rx_chars(struct uart_port *port) */ static void atmel_tx_chars(struct uart_port *port) { - struct circ_buf *xmit = &port->info->xmit; + struct circ_buf *xmit = &port->state->xmit; if (port->x_char && UART_GET_CSR(port) & ATMEL_US_TXRDY) { UART_PUT_CHAR(port, port->x_char); @@ -560,7 +560,7 @@ static irqreturn_t atmel_interrupt(int irq, void *dev_id) static void atmel_tx_dma(struct uart_port *port) { struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); - struct circ_buf *xmit = &port->info->xmit; + struct circ_buf *xmit = &port->state->xmit; struct atmel_dma_buffer *pdc = &atmel_port->pdc_tx; int count; @@ -663,14 +663,14 @@ static void atmel_rx_from_ring(struct uart_port *port) * uart_start(), which takes the lock. */ spin_unlock(&port->lock); - tty_flip_buffer_push(port->info->port.tty); + tty_flip_buffer_push(port->state->port.tty); spin_lock(&port->lock); } static void atmel_rx_from_dma(struct uart_port *port) { struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); - struct tty_struct *tty = port->info->port.tty; + struct tty_struct *tty = port->state->port.tty; struct atmel_dma_buffer *pdc; int rx_idx = atmel_port->pdc_rx_idx; unsigned int head; @@ -776,7 +776,7 @@ static void atmel_tasklet_func(unsigned long data) if (status_change & ATMEL_US_CTS) uart_handle_cts_change(port, !(status & ATMEL_US_CTS)); - wake_up_interruptible(&port->info->delta_msr_wait); + wake_up_interruptible(&port->state->port.delta_msr_wait); atmel_port->irq_status_prev = status; } @@ -795,7 +795,7 @@ static void atmel_tasklet_func(unsigned long data) static int atmel_startup(struct uart_port *port) { struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); - struct tty_struct *tty = port->info->port.tty; + struct tty_struct *tty = port->state->port.tty; int retval; /* @@ -854,7 +854,7 @@ static int atmel_startup(struct uart_port *port) } if (atmel_use_dma_tx(port)) { struct atmel_dma_buffer *pdc = &atmel_port->pdc_tx; - struct circ_buf *xmit = &port->info->xmit; + struct circ_buf *xmit = &port->state->xmit; pdc->buf = xmit->buf; pdc->dma_addr = dma_map_single(port->dev, diff --git a/drivers/serial/bfin_5xx.c b/drivers/serial/bfin_5xx.c index b4a7650af696..50abb7e557f4 100644 --- a/drivers/serial/bfin_5xx.c +++ b/drivers/serial/bfin_5xx.c @@ -42,6 +42,10 @@ # undef CONFIG_EARLY_PRINTK #endif +#ifdef CONFIG_SERIAL_BFIN_MODULE +# undef CONFIG_EARLY_PRINTK +#endif + /* UART name and device definitions */ #define BFIN_SERIAL_NAME "ttyBF" #define BFIN_SERIAL_MAJOR 204 @@ -140,7 +144,7 @@ static void bfin_serial_stop_tx(struct uart_port *port) { struct bfin_serial_port *uart = (struct bfin_serial_port *)port; #ifdef CONFIG_SERIAL_BFIN_DMA - struct circ_buf *xmit = &uart->port.info->xmit; + struct circ_buf *xmit = &uart->port.state->xmit; #endif while (!(UART_GET_LSR(uart) & TEMT)) @@ -167,7 +171,7 @@ static void bfin_serial_stop_tx(struct uart_port *port) static void bfin_serial_start_tx(struct uart_port *port) { struct bfin_serial_port *uart = (struct bfin_serial_port *)port; - struct tty_struct *tty = uart->port.info->port.tty; + struct tty_struct *tty = uart->port.state->port.tty; #ifdef CONFIG_SERIAL_BFIN_HARD_CTSRTS if (uart->scts && !(bfin_serial_get_mctrl(&uart->port) & TIOCM_CTS)) { @@ -239,10 +243,10 @@ static void bfin_serial_rx_chars(struct bfin_serial_port *uart) return; } - if (!uart->port.info || !uart->port.info->port.tty) + if (!uart->port.state || !uart->port.state->port.tty) return; #endif - tty = uart->port.info->port.tty; + tty = uart->port.state->port.tty; if (ANOMALY_05000363) { /* The BF533 (and BF561) family of processors have a nice anomaly @@ -327,7 +331,7 @@ static void bfin_serial_rx_chars(struct bfin_serial_port *uart) static void bfin_serial_tx_chars(struct bfin_serial_port *uart) { - struct circ_buf *xmit = &uart->port.info->xmit; + struct circ_buf *xmit = &uart->port.state->xmit; if (uart_circ_empty(xmit) || uart_tx_stopped(&uart->port)) { #ifdef CONFIG_BF54x @@ -394,7 +398,7 @@ static irqreturn_t bfin_serial_tx_int(int irq, void *dev_id) #ifdef CONFIG_SERIAL_BFIN_DMA static void bfin_serial_dma_tx_chars(struct bfin_serial_port *uart) { - struct circ_buf *xmit = &uart->port.info->xmit; + struct circ_buf *xmit = &uart->port.state->xmit; uart->tx_done = 0; @@ -432,7 +436,7 @@ static void bfin_serial_dma_tx_chars(struct bfin_serial_port *uart) static void bfin_serial_dma_rx_chars(struct bfin_serial_port *uart) { - struct tty_struct *tty = uart->port.info->port.tty; + struct tty_struct *tty = uart->port.state->port.tty; int i, flg, status; status = UART_GET_LSR(uart); @@ -525,7 +529,7 @@ void bfin_serial_rx_dma_timeout(struct bfin_serial_port *uart) static irqreturn_t bfin_serial_dma_tx_int(int irq, void *dev_id) { struct bfin_serial_port *uart = dev_id; - struct circ_buf *xmit = &uart->port.info->xmit; + struct circ_buf *xmit = &uart->port.state->xmit; #ifdef CONFIG_SERIAL_BFIN_HARD_CTSRTS if (uart->scts && !(bfin_serial_get_mctrl(&uart->port)&TIOCM_CTS)) { @@ -961,10 +965,10 @@ static void bfin_serial_set_ldisc(struct uart_port *port) int line = port->line; unsigned short val; - if (line >= port->info->port.tty->driver->num) + if (line >= port->state->port.tty->driver->num) return; - switch (port->info->port.tty->termios->c_line) { + switch (port->state->port.tty->termios->c_line) { case N_IRDA: val = UART_GET_GCTL(&bfin_serial_ports[line]); val |= (IREN | RPOLC); diff --git a/drivers/serial/bfin_sport_uart.c b/drivers/serial/bfin_sport_uart.c index c108b1a0ce98..088bb35475f1 100644 --- a/drivers/serial/bfin_sport_uart.c +++ b/drivers/serial/bfin_sport_uart.c @@ -178,7 +178,7 @@ static int sport_uart_setup(struct sport_uart_port *up, int sclk, int baud_rate) static irqreturn_t sport_uart_rx_irq(int irq, void *dev_id) { struct sport_uart_port *up = dev_id; - struct tty_struct *tty = up->port.info->port.tty; + struct tty_struct *tty = up->port.state->port.tty; unsigned int ch; do { @@ -205,7 +205,7 @@ static irqreturn_t sport_uart_tx_irq(int irq, void *dev_id) static irqreturn_t sport_uart_err_irq(int irq, void *dev_id) { struct sport_uart_port *up = dev_id; - struct tty_struct *tty = up->port.info->port.tty; + struct tty_struct *tty = up->port.state->port.tty; unsigned int stat = SPORT_GET_STAT(up); /* Overflow in RX FIFO */ @@ -290,7 +290,7 @@ fail1: static void sport_uart_tx_chars(struct sport_uart_port *up) { - struct circ_buf *xmit = &up->port.info->xmit; + struct circ_buf *xmit = &up->port.state->xmit; if (SPORT_GET_STAT(up) & TXF) return; diff --git a/drivers/serial/clps711x.c b/drivers/serial/clps711x.c index 80e76426131d..b6acd19b458e 100644 --- a/drivers/serial/clps711x.c +++ b/drivers/serial/clps711x.c @@ -93,7 +93,7 @@ static void clps711xuart_enable_ms(struct uart_port *port) static irqreturn_t clps711xuart_int_rx(int irq, void *dev_id) { struct uart_port *port = dev_id; - struct tty_struct *tty = port->info->port.tty; + struct tty_struct *tty = port->state->port.tty; unsigned int status, ch, flg; status = clps_readl(SYSFLG(port)); @@ -147,7 +147,7 @@ static irqreturn_t clps711xuart_int_rx(int irq, void *dev_id) static irqreturn_t clps711xuart_int_tx(int irq, void *dev_id) { struct uart_port *port = dev_id; - struct circ_buf *xmit = &port->info->xmit; + struct circ_buf *xmit = &port->state->xmit; int count; if (port->x_char) { diff --git a/drivers/serial/cpm_uart/cpm_uart_core.c b/drivers/serial/cpm_uart/cpm_uart_core.c index f8df0681e160..8d349b23249a 100644 --- a/drivers/serial/cpm_uart/cpm_uart_core.c +++ b/drivers/serial/cpm_uart/cpm_uart_core.c @@ -244,7 +244,7 @@ static void cpm_uart_int_rx(struct uart_port *port) int i; unsigned char ch; u8 *cp; - struct tty_struct *tty = port->info->port.tty; + struct tty_struct *tty = port->state->port.tty; struct uart_cpm_port *pinfo = (struct uart_cpm_port *)port; cbd_t __iomem *bdp; u16 status; diff --git a/drivers/serial/dz.c b/drivers/serial/dz.c index 6042b87797a1..57421d776329 100644 --- a/drivers/serial/dz.c +++ b/drivers/serial/dz.c @@ -197,7 +197,7 @@ static inline void dz_receive_chars(struct dz_mux *mux) while ((status = dz_in(dport, DZ_RBUF)) & DZ_DVAL) { dport = &mux->dport[LINE(status)]; uport = &dport->port; - tty = uport->info->port.tty; /* point to the proper dev */ + tty = uport->state->port.tty; /* point to the proper dev */ ch = UCHAR(status); /* grab the char */ flag = TTY_NORMAL; @@ -249,7 +249,7 @@ static inline void dz_receive_chars(struct dz_mux *mux) } for (i = 0; i < DZ_NB_PORT; i++) if (lines_rx[i]) - tty_flip_buffer_push(mux->dport[i].port.info->port.tty); + tty_flip_buffer_push(mux->dport[i].port.state->port.tty); } /* @@ -268,7 +268,7 @@ static inline void dz_transmit_chars(struct dz_mux *mux) status = dz_in(dport, DZ_CSR); dport = &mux->dport[LINE(status)]; - xmit = &dport->port.info->xmit; + xmit = &dport->port.state->xmit; if (dport->port.x_char) { /* XON/XOFF chars */ dz_out(dport, DZ_TDR, dport->port.x_char); diff --git a/drivers/serial/icom.c b/drivers/serial/icom.c index cd1b6a45bb82..2d7feecaf492 100644 --- a/drivers/serial/icom.c +++ b/drivers/serial/icom.c @@ -617,7 +617,7 @@ static void shutdown(struct icom_port *icom_port) * disable break condition */ cmdReg = readb(&icom_port->dram->CmdReg); - if ((cmdReg | CMD_SND_BREAK) == CMD_SND_BREAK) { + if (cmdReg & CMD_SND_BREAK) { writeb(cmdReg & ~CMD_SND_BREAK, &icom_port->dram->CmdReg); } } @@ -627,7 +627,7 @@ static int icom_write(struct uart_port *port) unsigned long data_count; unsigned char cmdReg; unsigned long offset; - int temp_tail = port->info->xmit.tail; + int temp_tail = port->state->xmit.tail; trace(ICOM_PORT, "WRITE", 0); @@ -638,11 +638,11 @@ static int icom_write(struct uart_port *port) } data_count = 0; - while ((port->info->xmit.head != temp_tail) && + while ((port->state->xmit.head != temp_tail) && (data_count <= XMIT_BUFF_SZ)) { ICOM_PORT->xmit_buf[data_count++] = - port->info->xmit.buf[temp_tail]; + port->state->xmit.buf[temp_tail]; temp_tail++; temp_tail &= (UART_XMIT_SIZE - 1); @@ -694,8 +694,8 @@ static inline void check_modem_status(struct icom_port *icom_port) uart_handle_cts_change(&icom_port->uart_port, delta_status & ICOM_CTS); - wake_up_interruptible(&icom_port->uart_port.info-> - delta_msr_wait); + wake_up_interruptible(&icom_port->uart_port.state-> + port.delta_msr_wait); old_status = status; } spin_unlock(&icom_port->uart_port.lock); @@ -718,10 +718,10 @@ static void xmit_interrupt(u16 port_int_reg, struct icom_port *icom_port) icom_port->uart_port.icount.tx += count; for (i=0; i<count && - !uart_circ_empty(&icom_port->uart_port.info->xmit); i++) { + !uart_circ_empty(&icom_port->uart_port.state->xmit); i++) { - icom_port->uart_port.info->xmit.tail++; - icom_port->uart_port.info->xmit.tail &= + icom_port->uart_port.state->xmit.tail++; + icom_port->uart_port.state->xmit.tail &= (UART_XMIT_SIZE - 1); } @@ -735,7 +735,7 @@ static void xmit_interrupt(u16 port_int_reg, struct icom_port *icom_port) static void recv_interrupt(u16 port_int_reg, struct icom_port *icom_port) { short int count, rcv_buff; - struct tty_struct *tty = icom_port->uart_port.info->port.tty; + struct tty_struct *tty = icom_port->uart_port.state->port.tty; unsigned short int status; struct uart_icount *icount; unsigned long offset; diff --git a/drivers/serial/imx.c b/drivers/serial/imx.c index 7485afd0df4c..18130f11238e 100644 --- a/drivers/serial/imx.c +++ b/drivers/serial/imx.c @@ -224,7 +224,7 @@ static void imx_mctrl_check(struct imx_port *sport) if (changed & TIOCM_CTS) uart_handle_cts_change(&sport->port, status & TIOCM_CTS); - wake_up_interruptible(&sport->port.info->delta_msr_wait); + wake_up_interruptible(&sport->port.state->port.delta_msr_wait); } /* @@ -236,7 +236,7 @@ static void imx_timeout(unsigned long data) struct imx_port *sport = (struct imx_port *)data; unsigned long flags; - if (sport->port.info) { + if (sport->port.state) { spin_lock_irqsave(&sport->port.lock, flags); imx_mctrl_check(sport); spin_unlock_irqrestore(&sport->port.lock, flags); @@ -323,7 +323,7 @@ static void imx_enable_ms(struct uart_port *port) static inline void imx_transmit_buffer(struct imx_port *sport) { - struct circ_buf *xmit = &sport->port.info->xmit; + struct circ_buf *xmit = &sport->port.state->xmit; while (!(readl(sport->port.membase + UTS) & UTS_TXFULL)) { /* send xmit->buf[xmit->tail] @@ -388,7 +388,7 @@ static irqreturn_t imx_rtsint(int irq, void *dev_id) writel(USR1_RTSD, sport->port.membase + USR1); uart_handle_cts_change(&sport->port, !!val); - wake_up_interruptible(&sport->port.info->delta_msr_wait); + wake_up_interruptible(&sport->port.state->port.delta_msr_wait); spin_unlock_irqrestore(&sport->port.lock, flags); return IRQ_HANDLED; @@ -397,7 +397,7 @@ static irqreturn_t imx_rtsint(int irq, void *dev_id) static irqreturn_t imx_txint(int irq, void *dev_id) { struct imx_port *sport = dev_id; - struct circ_buf *xmit = &sport->port.info->xmit; + struct circ_buf *xmit = &sport->port.state->xmit; unsigned long flags; spin_lock_irqsave(&sport->port.lock,flags); @@ -427,7 +427,7 @@ static irqreturn_t imx_rxint(int irq, void *dev_id) { struct imx_port *sport = dev_id; unsigned int rx,flg,ignored = 0; - struct tty_struct *tty = sport->port.info->port.tty; + struct tty_struct *tty = sport->port.state->port.tty; unsigned long flags, temp; spin_lock_irqsave(&sport->port.lock,flags); @@ -900,11 +900,11 @@ imx_set_termios(struct uart_port *port, struct ktermios *termios, rational_best_approximation(16 * div * baud, sport->port.uartclk, 1 << 16, 1 << 16, &num, &denom); - if (port->info && port->info->port.tty) { + if (port->state && port->state->port.tty) { tdiv64 = sport->port.uartclk; tdiv64 *= num; do_div(tdiv64, denom * 16 * div); - tty_encode_baud_rate(sport->port.info->port.tty, + tty_encode_baud_rate(sport->port.state->port.tty, (speed_t)tdiv64, (speed_t)tdiv64); } diff --git a/drivers/serial/ioc3_serial.c b/drivers/serial/ioc3_serial.c index ae3699d77dd0..d8983dd5c4b2 100644 --- a/drivers/serial/ioc3_serial.c +++ b/drivers/serial/ioc3_serial.c @@ -897,25 +897,25 @@ static void transmit_chars(struct uart_port *the_port) char *start; struct tty_struct *tty; struct ioc3_port *port = get_ioc3_port(the_port); - struct uart_info *info; + struct uart_state *state; if (!the_port) return; if (!port) return; - info = the_port->info; - tty = info->port.tty; + state = the_port->state; + tty = state->port.tty; - if (uart_circ_empty(&info->xmit) || uart_tx_stopped(the_port)) { + if (uart_circ_empty(&state->xmit) || uart_tx_stopped(the_port)) { /* Nothing to do or hw stopped */ set_notification(port, N_ALL_OUTPUT, 0); return; } - head = info->xmit.head; - tail = info->xmit.tail; - start = (char *)&info->xmit.buf[tail]; + head = state->xmit.head; + tail = state->xmit.tail; + start = (char *)&state->xmit.buf[tail]; /* write out all the data or until the end of the buffer */ xmit_count = (head < tail) ? (UART_XMIT_SIZE - tail) : (head - tail); @@ -928,14 +928,14 @@ static void transmit_chars(struct uart_port *the_port) /* advance the pointers */ tail += result; tail &= UART_XMIT_SIZE - 1; - info->xmit.tail = tail; - start = (char *)&info->xmit.buf[tail]; + state->xmit.tail = tail; + start = (char *)&state->xmit.buf[tail]; } } - if (uart_circ_chars_pending(&info->xmit) < WAKEUP_CHARS) + if (uart_circ_chars_pending(&state->xmit) < WAKEUP_CHARS) uart_write_wakeup(the_port); - if (uart_circ_empty(&info->xmit)) { + if (uart_circ_empty(&state->xmit)) { set_notification(port, N_OUTPUT_LOWAT, 0); } else { set_notification(port, N_OUTPUT_LOWAT, 1); @@ -956,7 +956,7 @@ ioc3_change_speed(struct uart_port *the_port, unsigned int cflag; int baud; int new_parity = 0, new_parity_enable = 0, new_stop = 0, new_data = 8; - struct uart_info *info = the_port->info; + struct uart_state *state = the_port->state; cflag = new_termios->c_cflag; @@ -997,14 +997,14 @@ ioc3_change_speed(struct uart_port *the_port, the_port->ignore_status_mask = N_ALL_INPUT; - info->port.tty->low_latency = 1; + state->port.tty->low_latency = 1; - if (I_IGNPAR(info->port.tty)) + if (I_IGNPAR(state->port.tty)) the_port->ignore_status_mask &= ~(N_PARITY_ERROR | N_FRAMING_ERROR); - if (I_IGNBRK(info->port.tty)) { + if (I_IGNBRK(state->port.tty)) { the_port->ignore_status_mask &= ~N_BREAK; - if (I_IGNPAR(info->port.tty)) + if (I_IGNPAR(state->port.tty)) the_port->ignore_status_mask &= ~N_OVERRUN_ERROR; } if (!(cflag & CREAD)) { @@ -1286,8 +1286,8 @@ static inline int do_read(struct uart_port *the_port, char *buf, int len) uart_handle_dcd_change (port->ip_port, 0); wake_up_interruptible - (&the_port->info-> - delta_msr_wait); + (&the_port->state-> + port.delta_msr_wait); } /* If we had any data to return, we @@ -1392,21 +1392,21 @@ static int receive_chars(struct uart_port *the_port) struct tty_struct *tty; unsigned char ch[MAX_CHARS]; int read_count = 0, read_room, flip = 0; - struct uart_info *info = the_port->info; + struct uart_state *state = the_port->state; struct ioc3_port *port = get_ioc3_port(the_port); unsigned long pflags; /* Make sure all the pointers are "good" ones */ - if (!info) + if (!state) return 0; - if (!info->port.tty) + if (!state->port.tty) return 0; if (!(port->ip_flags & INPUT_ENABLE)) return 0; spin_lock_irqsave(&the_port->lock, pflags); - tty = info->port.tty; + tty = state->port.tty; read_count = do_read(the_port, ch, MAX_CHARS); if (read_count > 0) { @@ -1491,7 +1491,7 @@ ioc3uart_intr_one(struct ioc3_submodule *is, uart_handle_dcd_change(the_port, shadow & SHADOW_DCD); wake_up_interruptible - (&the_port->info->delta_msr_wait); + (&the_port->state->port.delta_msr_wait); } else if ((port->ip_notify & N_DDCD) && !(shadow & SHADOW_DCD)) { /* Flag delta DCD/no DCD */ @@ -1511,7 +1511,7 @@ ioc3uart_intr_one(struct ioc3_submodule *is, uart_handle_cts_change(the_port, shadow & SHADOW_CTS); wake_up_interruptible - (&the_port->info->delta_msr_wait); + (&the_port->state->port.delta_msr_wait); } } @@ -1721,14 +1721,14 @@ static void ic3_shutdown(struct uart_port *the_port) { unsigned long port_flags; struct ioc3_port *port; - struct uart_info *info; + struct uart_state *state; port = get_ioc3_port(the_port); if (!port) return; - info = the_port->info; - wake_up_interruptible(&info->delta_msr_wait); + state = the_port->state; + wake_up_interruptible(&state->port.delta_msr_wait); spin_lock_irqsave(&the_port->lock, port_flags); set_notification(port, N_ALL, 0); diff --git a/drivers/serial/ioc4_serial.c b/drivers/serial/ioc4_serial.c index e5c58fe7e745..2e02c3026d24 100644 --- a/drivers/serial/ioc4_serial.c +++ b/drivers/serial/ioc4_serial.c @@ -1627,25 +1627,25 @@ static void transmit_chars(struct uart_port *the_port) char *start; struct tty_struct *tty; struct ioc4_port *port = get_ioc4_port(the_port, 0); - struct uart_info *info; + struct uart_state *state; if (!the_port) return; if (!port) return; - info = the_port->info; - tty = info->port.tty; + state = the_port->state; + tty = state->port.tty; - if (uart_circ_empty(&info->xmit) || uart_tx_stopped(the_port)) { + if (uart_circ_empty(&state->xmit) || uart_tx_stopped(the_port)) { /* Nothing to do or hw stopped */ set_notification(port, N_ALL_OUTPUT, 0); return; } - head = info->xmit.head; - tail = info->xmit.tail; - start = (char *)&info->xmit.buf[tail]; + head = state->xmit.head; + tail = state->xmit.tail; + start = (char *)&state->xmit.buf[tail]; /* write out all the data or until the end of the buffer */ xmit_count = (head < tail) ? (UART_XMIT_SIZE - tail) : (head - tail); @@ -1658,14 +1658,14 @@ static void transmit_chars(struct uart_port *the_port) /* advance the pointers */ tail += result; tail &= UART_XMIT_SIZE - 1; - info->xmit.tail = tail; - start = (char *)&info->xmit.buf[tail]; + state->xmit.tail = tail; + start = (char *)&state->xmit.buf[tail]; } } - if (uart_circ_chars_pending(&info->xmit) < WAKEUP_CHARS) + if (uart_circ_chars_pending(&state->xmit) < WAKEUP_CHARS) uart_write_wakeup(the_port); - if (uart_circ_empty(&info->xmit)) { + if (uart_circ_empty(&state->xmit)) { set_notification(port, N_OUTPUT_LOWAT, 0); } else { set_notification(port, N_OUTPUT_LOWAT, 1); @@ -1686,7 +1686,7 @@ ioc4_change_speed(struct uart_port *the_port, int baud, bits; unsigned cflag; int new_parity = 0, new_parity_enable = 0, new_stop = 0, new_data = 8; - struct uart_info *info = the_port->info; + struct uart_state *state = the_port->state; cflag = new_termios->c_cflag; @@ -1738,14 +1738,14 @@ ioc4_change_speed(struct uart_port *the_port, the_port->ignore_status_mask = N_ALL_INPUT; - info->port.tty->low_latency = 1; + state->port.tty->low_latency = 1; - if (I_IGNPAR(info->port.tty)) + if (I_IGNPAR(state->port.tty)) the_port->ignore_status_mask &= ~(N_PARITY_ERROR | N_FRAMING_ERROR); - if (I_IGNBRK(info->port.tty)) { + if (I_IGNBRK(state->port.tty)) { the_port->ignore_status_mask &= ~N_BREAK; - if (I_IGNPAR(info->port.tty)) + if (I_IGNPAR(state->port.tty)) the_port->ignore_status_mask &= ~N_OVERRUN_ERROR; } if (!(cflag & CREAD)) { @@ -1784,7 +1784,7 @@ ioc4_change_speed(struct uart_port *the_port, static inline int ic4_startup_local(struct uart_port *the_port) { struct ioc4_port *port; - struct uart_info *info; + struct uart_state *state; if (!the_port) return -1; @@ -1793,7 +1793,7 @@ static inline int ic4_startup_local(struct uart_port *the_port) if (!port) return -1; - info = the_port->info; + state = the_port->state; local_open(port); @@ -1801,7 +1801,7 @@ static inline int ic4_startup_local(struct uart_port *the_port) ioc4_set_proto(port, the_port->mapbase); /* set the speed of the serial port */ - ioc4_change_speed(the_port, info->port.tty->termios, + ioc4_change_speed(the_port, state->port.tty->termios, (struct ktermios *)0); return 0; @@ -1882,7 +1882,7 @@ static void handle_intr(void *arg, uint32_t sio_ir) the_port = port->ip_port; the_port->icount.dcd = 1; wake_up_interruptible - (&the_port-> info->delta_msr_wait); + (&the_port->state->port.delta_msr_wait); } else if ((port->ip_notify & N_DDCD) && !(shadow & IOC4_SHADOW_DCD)) { /* Flag delta DCD/no DCD */ @@ -1904,7 +1904,7 @@ static void handle_intr(void *arg, uint32_t sio_ir) the_port->icount.cts = (shadow & IOC4_SHADOW_CTS) ? 1 : 0; wake_up_interruptible - (&the_port->info->delta_msr_wait); + (&the_port->state->port.delta_msr_wait); } } @@ -2236,8 +2236,8 @@ static inline int do_read(struct uart_port *the_port, unsigned char *buf, && port->ip_port) { the_port->icount.dcd = 0; wake_up_interruptible - (&the_port->info-> - delta_msr_wait); + (&the_port->state-> + port.delta_msr_wait); } /* If we had any data to return, we @@ -2341,17 +2341,17 @@ static void receive_chars(struct uart_port *the_port) unsigned char ch[IOC4_MAX_CHARS]; int read_count, request_count = IOC4_MAX_CHARS; struct uart_icount *icount; - struct uart_info *info = the_port->info; + struct uart_state *state = the_port->state; unsigned long pflags; /* Make sure all the pointers are "good" ones */ - if (!info) + if (!state) return; - if (!info->port.tty) + if (!state->port.tty) return; spin_lock_irqsave(&the_port->lock, pflags); - tty = info->port.tty; + tty = state->port.tty; request_count = tty_buffer_request_room(tty, IOC4_MAX_CHARS); @@ -2430,19 +2430,19 @@ static void ic4_shutdown(struct uart_port *the_port) { unsigned long port_flags; struct ioc4_port *port; - struct uart_info *info; + struct uart_state *state; port = get_ioc4_port(the_port, 0); if (!port) return; - info = the_port->info; + state = the_port->state; port->ip_port = NULL; - wake_up_interruptible(&info->delta_msr_wait); + wake_up_interruptible(&state->port.delta_msr_wait); - if (info->port.tty) - set_bit(TTY_IO_ERROR, &info->port.tty->flags); + if (state->port.tty) + set_bit(TTY_IO_ERROR, &state->port.tty->flags); spin_lock_irqsave(&the_port->lock, port_flags); set_notification(port, N_ALL, 0); @@ -2538,7 +2538,7 @@ static int ic4_startup(struct uart_port *the_port) int retval; struct ioc4_port *port; struct ioc4_control *control; - struct uart_info *info; + struct uart_state *state; unsigned long port_flags; if (!the_port) @@ -2546,7 +2546,7 @@ static int ic4_startup(struct uart_port *the_port) port = get_ioc4_port(the_port, 1); if (!port) return -ENODEV; - info = the_port->info; + state = the_port->state; control = port->ip_control; if (!control) { diff --git a/drivers/serial/ip22zilog.c b/drivers/serial/ip22zilog.c index 0d9acbd0bb70..ebff4a1d4bcc 100644 --- a/drivers/serial/ip22zilog.c +++ b/drivers/serial/ip22zilog.c @@ -256,9 +256,9 @@ static struct tty_struct *ip22zilog_receive_chars(struct uart_ip22zilog_port *up unsigned int r1; tty = NULL; - if (up->port.info != NULL && - up->port.info->port.tty != NULL) - tty = up->port.info->port.tty; + if (up->port.state != NULL && + up->port.state->port.tty != NULL) + tty = up->port.state->port.tty; for (;;) { ch = readb(&channel->control); @@ -354,7 +354,7 @@ static void ip22zilog_status_handle(struct uart_ip22zilog_port *up, uart_handle_cts_change(&up->port, (status & CTS)); - wake_up_interruptible(&up->port.info->delta_msr_wait); + wake_up_interruptible(&up->port.state->port.delta_msr_wait); } up->prev_status = status; @@ -404,9 +404,9 @@ static void ip22zilog_transmit_chars(struct uart_ip22zilog_port *up, return; } - if (up->port.info == NULL) + if (up->port.state == NULL) goto ack_tx_int; - xmit = &up->port.info->xmit; + xmit = &up->port.state->xmit; if (uart_circ_empty(xmit)) goto ack_tx_int; if (uart_tx_stopped(&up->port)) @@ -607,7 +607,7 @@ static void ip22zilog_start_tx(struct uart_port *port) port->icount.tx++; port->x_char = 0; } else { - struct circ_buf *xmit = &port->info->xmit; + struct circ_buf *xmit = &port->state->xmit; writeb(xmit->buf[xmit->tail], &channel->data); ZSDELAY(); diff --git a/drivers/serial/jsm/jsm_neo.c b/drivers/serial/jsm/jsm_neo.c index 9dadaa11d266..b4b124e4828f 100644 --- a/drivers/serial/jsm/jsm_neo.c +++ b/drivers/serial/jsm/jsm_neo.c @@ -989,7 +989,7 @@ static void neo_param(struct jsm_channel *ch) { 50, B50 }, }; - cflag = C_BAUD(ch->uart_port.info->port.tty); + cflag = C_BAUD(ch->uart_port.state->port.tty); baud = 9600; for (i = 0; i < ARRAY_SIZE(baud_rates); i++) { if (baud_rates[i].cflag == cflag) { diff --git a/drivers/serial/jsm/jsm_tty.c b/drivers/serial/jsm/jsm_tty.c index 00f4577d2f7f..7439c0373620 100644 --- a/drivers/serial/jsm/jsm_tty.c +++ b/drivers/serial/jsm/jsm_tty.c @@ -147,7 +147,7 @@ static void jsm_tty_send_xchar(struct uart_port *port, char ch) struct ktermios *termios; spin_lock_irqsave(&port->lock, lock_flags); - termios = port->info->port.tty->termios; + termios = port->state->port.tty->termios; if (ch == termios->c_cc[VSTART]) channel->ch_bd->bd_ops->send_start_character(channel); @@ -245,7 +245,7 @@ static int jsm_tty_open(struct uart_port *port) channel->ch_cached_lsr = 0; channel->ch_stops_sent = 0; - termios = port->info->port.tty->termios; + termios = port->state->port.tty->termios; channel->ch_c_cflag = termios->c_cflag; channel->ch_c_iflag = termios->c_iflag; channel->ch_c_oflag = termios->c_oflag; @@ -278,7 +278,7 @@ static void jsm_tty_close(struct uart_port *port) jsm_printk(CLOSE, INFO, &channel->ch_bd->pci_dev, "start\n"); bd = channel->ch_bd; - ts = port->info->port.tty->termios; + ts = port->state->port.tty->termios; channel->ch_flags &= ~(CH_STOPI); @@ -530,7 +530,7 @@ void jsm_input(struct jsm_channel *ch) if (!ch) return; - tp = ch->uart_port.info->port.tty; + tp = ch->uart_port.state->port.tty; bd = ch->ch_bd; if(!bd) @@ -849,7 +849,7 @@ int jsm_tty_write(struct uart_port *port) u16 tail; u16 tmask; u32 remain; - int temp_tail = port->info->xmit.tail; + int temp_tail = port->state->xmit.tail; struct jsm_channel *channel = (struct jsm_channel *)port; tmask = WQUEUEMASK; @@ -865,10 +865,10 @@ int jsm_tty_write(struct uart_port *port) data_count = 0; if (bufcount >= remain) { bufcount -= remain; - while ((port->info->xmit.head != temp_tail) && + while ((port->state->xmit.head != temp_tail) && (data_count < remain)) { channel->ch_wqueue[head++] = - port->info->xmit.buf[temp_tail]; + port->state->xmit.buf[temp_tail]; temp_tail++; temp_tail &= (UART_XMIT_SIZE - 1); @@ -880,10 +880,10 @@ int jsm_tty_write(struct uart_port *port) data_count1 = 0; if (bufcount > 0) { remain = bufcount; - while ((port->info->xmit.head != temp_tail) && + while ((port->state->xmit.head != temp_tail) && (data_count1 < remain)) { channel->ch_wqueue[head++] = - port->info->xmit.buf[temp_tail]; + port->state->xmit.buf[temp_tail]; temp_tail++; temp_tail &= (UART_XMIT_SIZE - 1); @@ -892,7 +892,7 @@ int jsm_tty_write(struct uart_port *port) } } - port->info->xmit.tail = temp_tail; + port->state->xmit.tail = temp_tail; data_count += data_count1; if (data_count) { diff --git a/drivers/serial/m32r_sio.c b/drivers/serial/m32r_sio.c index 611c97a15654..bea5c215460c 100644 --- a/drivers/serial/m32r_sio.c +++ b/drivers/serial/m32r_sio.c @@ -286,7 +286,7 @@ static void m32r_sio_start_tx(struct uart_port *port) { #ifdef CONFIG_SERIAL_M32R_PLDSIO struct uart_sio_port *up = (struct uart_sio_port *)port; - struct circ_buf *xmit = &up->port.info->xmit; + struct circ_buf *xmit = &up->port.state->xmit; if (!(up->ier & UART_IER_THRI)) { up->ier |= UART_IER_THRI; @@ -325,7 +325,7 @@ static void m32r_sio_enable_ms(struct uart_port *port) static void receive_chars(struct uart_sio_port *up, int *status) { - struct tty_struct *tty = up->port.info->port.tty; + struct tty_struct *tty = up->port.state->port.tty; unsigned char ch; unsigned char flag; int max_count = 256; @@ -398,7 +398,7 @@ static void receive_chars(struct uart_sio_port *up, int *status) static void transmit_chars(struct uart_sio_port *up) { - struct circ_buf *xmit = &up->port.info->xmit; + struct circ_buf *xmit = &up->port.state->xmit; int count; if (up->port.x_char) { diff --git a/drivers/serial/max3100.c b/drivers/serial/max3100.c index 9fd33e5622bd..75ab00631c41 100644 --- a/drivers/serial/max3100.c +++ b/drivers/serial/max3100.c @@ -184,7 +184,7 @@ static void max3100_timeout(unsigned long data) { struct max3100_port *s = (struct max3100_port *)data; - if (s->port.info) { + if (s->port.state) { max3100_dowork(s); mod_timer(&s->timer, jiffies + s->poll_time); } @@ -261,7 +261,7 @@ static void max3100_work(struct work_struct *w) int rxchars; u16 tx, rx; int conf, cconf, rts, crts; - struct circ_buf *xmit = &s->port.info->xmit; + struct circ_buf *xmit = &s->port.state->xmit; dev_dbg(&s->spi->dev, "%s\n", __func__); @@ -307,8 +307,8 @@ static void max3100_work(struct work_struct *w) } } - if (rxchars > 16 && s->port.info->port.tty != NULL) { - tty_flip_buffer_push(s->port.info->port.tty); + if (rxchars > 16 && s->port.state->port.tty != NULL) { + tty_flip_buffer_push(s->port.state->port.tty); rxchars = 0; } if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS) @@ -320,8 +320,8 @@ static void max3100_work(struct work_struct *w) (!uart_circ_empty(xmit) && !uart_tx_stopped(&s->port)))); - if (rxchars > 0 && s->port.info->port.tty != NULL) - tty_flip_buffer_push(s->port.info->port.tty); + if (rxchars > 0 && s->port.state->port.tty != NULL) + tty_flip_buffer_push(s->port.state->port.tty); } static irqreturn_t max3100_irq(int irqno, void *dev_id) @@ -429,7 +429,7 @@ max3100_set_termios(struct uart_port *port, struct ktermios *termios, int baud = 0; unsigned cflag; u32 param_new, param_mask, parity = 0; - struct tty_struct *tty = s->port.info->port.tty; + struct tty_struct *tty = s->port.state->port.tty; dev_dbg(&s->spi->dev, "%s\n", __func__); if (!tty) @@ -529,7 +529,7 @@ max3100_set_termios(struct uart_port *port, struct ktermios *termios, MAX3100_STATUS_OE; /* we are sending char from a workqueue so enable */ - s->port.info->port.tty->low_latency = 1; + s->port.state->port.tty->low_latency = 1; if (s->poll_time > 0) del_timer_sync(&s->timer); diff --git a/drivers/serial/mcf.c b/drivers/serial/mcf.c index 0eefb07bebaf..b44382442bf1 100644 --- a/drivers/serial/mcf.c +++ b/drivers/serial/mcf.c @@ -323,7 +323,7 @@ static void mcf_rx_chars(struct mcf_uart *pp) uart_insert_char(port, status, MCFUART_USR_RXOVERRUN, ch, flag); } - tty_flip_buffer_push(port->info->port.tty); + tty_flip_buffer_push(port->state->port.tty); } /****************************************************************************/ @@ -331,7 +331,7 @@ static void mcf_rx_chars(struct mcf_uart *pp) static void mcf_tx_chars(struct mcf_uart *pp) { struct uart_port *port = &pp->port; - struct circ_buf *xmit = &port->info->xmit; + struct circ_buf *xmit = &port->state->xmit; if (port->x_char) { /* Send special char - probably flow control */ diff --git a/drivers/serial/mpc52xx_uart.c b/drivers/serial/mpc52xx_uart.c index abbd146c50d9..d7bcd074d383 100644 --- a/drivers/serial/mpc52xx_uart.c +++ b/drivers/serial/mpc52xx_uart.c @@ -745,7 +745,7 @@ static struct uart_ops mpc52xx_uart_ops = { static inline int mpc52xx_uart_int_rx_chars(struct uart_port *port) { - struct tty_struct *tty = port->info->port.tty; + struct tty_struct *tty = port->state->port.tty; unsigned char ch, flag; unsigned short status; @@ -812,7 +812,7 @@ mpc52xx_uart_int_rx_chars(struct uart_port *port) static inline int mpc52xx_uart_int_tx_chars(struct uart_port *port) { - struct circ_buf *xmit = &port->info->xmit; + struct circ_buf *xmit = &port->state->xmit; /* Process out of band chars */ if (port->x_char) { diff --git a/drivers/serial/mpsc.c b/drivers/serial/mpsc.c index 61d3ade5286c..b5496c28e60b 100644 --- a/drivers/serial/mpsc.c +++ b/drivers/serial/mpsc.c @@ -936,7 +936,7 @@ static int serial_polled; static int mpsc_rx_intr(struct mpsc_port_info *pi) { struct mpsc_rx_desc *rxre; - struct tty_struct *tty = pi->port.info->port.tty; + struct tty_struct *tty = pi->port.state->port.tty; u32 cmdstat, bytes_in, i; int rc = 0; u8 *bp; @@ -1109,7 +1109,7 @@ static void mpsc_setup_tx_desc(struct mpsc_port_info *pi, u32 count, u32 intr) static void mpsc_copy_tx_data(struct mpsc_port_info *pi) { - struct circ_buf *xmit = &pi->port.info->xmit; + struct circ_buf *xmit = &pi->port.state->xmit; u8 *bp; u32 i; diff --git a/drivers/serial/msm_serial.c b/drivers/serial/msm_serial.c index f7c24baa1416..b05c5aa02cb4 100644 --- a/drivers/serial/msm_serial.c +++ b/drivers/serial/msm_serial.c @@ -88,7 +88,7 @@ static void msm_enable_ms(struct uart_port *port) static void handle_rx(struct uart_port *port) { - struct tty_struct *tty = port->info->port.tty; + struct tty_struct *tty = port->state->port.tty; unsigned int sr; /* @@ -136,7 +136,7 @@ static void handle_rx(struct uart_port *port) static void handle_tx(struct uart_port *port) { - struct circ_buf *xmit = &port->info->xmit; + struct circ_buf *xmit = &port->state->xmit; struct msm_port *msm_port = UART_TO_MSM(port); int sent_tx; @@ -169,7 +169,7 @@ static void handle_delta_cts(struct uart_port *port) { msm_write(port, UART_CR_CMD_RESET_CTS, UART_CR); port->icount.cts++; - wake_up_interruptible(&port->info->delta_msr_wait); + wake_up_interruptible(&port->state->port.delta_msr_wait); } static irqreturn_t msm_irq(int irq, void *dev_id) diff --git a/drivers/serial/mux.c b/drivers/serial/mux.c index 953a5ffa9b44..7571aaa138b0 100644 --- a/drivers/serial/mux.c +++ b/drivers/serial/mux.c @@ -199,7 +199,7 @@ static void mux_break_ctl(struct uart_port *port, int break_state) static void mux_write(struct uart_port *port) { int count; - struct circ_buf *xmit = &port->info->xmit; + struct circ_buf *xmit = &port->state->xmit; if(port->x_char) { UART_PUT_CHAR(port, port->x_char); @@ -243,7 +243,7 @@ static void mux_write(struct uart_port *port) static void mux_read(struct uart_port *port) { int data; - struct tty_struct *tty = port->info->port.tty; + struct tty_struct *tty = port->state->port.tty; __u32 start_count = port->icount.rx; while(1) { diff --git a/drivers/serial/netx-serial.c b/drivers/serial/netx-serial.c index 3e5dda8518b7..7735c9f35fa0 100644 --- a/drivers/serial/netx-serial.c +++ b/drivers/serial/netx-serial.c @@ -140,7 +140,7 @@ static void netx_enable_ms(struct uart_port *port) static inline void netx_transmit_buffer(struct uart_port *port) { - struct circ_buf *xmit = &port->info->xmit; + struct circ_buf *xmit = &port->state->xmit; if (port->x_char) { writel(port->x_char, port->membase + UART_DR); @@ -185,7 +185,7 @@ static unsigned int netx_tx_empty(struct uart_port *port) static void netx_txint(struct uart_port *port) { - struct circ_buf *xmit = &port->info->xmit; + struct circ_buf *xmit = &port->state->xmit; if (uart_circ_empty(xmit) || uart_tx_stopped(port)) { netx_stop_tx(port); @@ -201,7 +201,7 @@ static void netx_txint(struct uart_port *port) static void netx_rxint(struct uart_port *port) { unsigned char rx, flg, status; - struct tty_struct *tty = port->info->port.tty; + struct tty_struct *tty = port->state->port.tty; while (!(readl(port->membase + UART_FR) & FR_RXFE)) { rx = readl(port->membase + UART_DR); diff --git a/drivers/serial/nwpserial.c b/drivers/serial/nwpserial.c index 9e150b19d726..e1ab8ec0a4a6 100644 --- a/drivers/serial/nwpserial.c +++ b/drivers/serial/nwpserial.c @@ -126,7 +126,7 @@ static void nwpserial_config_port(struct uart_port *port, int flags) static irqreturn_t nwpserial_interrupt(int irq, void *dev_id) { struct nwpserial_port *up = dev_id; - struct tty_struct *tty = up->port.info->port.tty; + struct tty_struct *tty = up->port.state->port.tty; irqreturn_t ret; unsigned int iir; unsigned char ch; @@ -261,7 +261,7 @@ static void nwpserial_start_tx(struct uart_port *port) struct nwpserial_port *up; struct circ_buf *xmit; up = container_of(port, struct nwpserial_port, port); - xmit = &up->port.info->xmit; + xmit = &up->port.state->xmit; if (port->x_char) { nwpserial_putchar(up, up->port.x_char); diff --git a/drivers/serial/pmac_zilog.c b/drivers/serial/pmac_zilog.c index 9c1243fbd512..0700cd10b97c 100644 --- a/drivers/serial/pmac_zilog.c +++ b/drivers/serial/pmac_zilog.c @@ -242,12 +242,12 @@ static struct tty_struct *pmz_receive_chars(struct uart_pmac_port *uap) } /* Sanity check, make sure the old bug is no longer happening */ - if (uap->port.info == NULL || uap->port.info->port.tty == NULL) { + if (uap->port.state == NULL || uap->port.state->port.tty == NULL) { WARN_ON(1); (void)read_zsdata(uap); return NULL; } - tty = uap->port.info->port.tty; + tty = uap->port.state->port.tty; while (1) { error = 0; @@ -369,7 +369,7 @@ static void pmz_status_handle(struct uart_pmac_port *uap) uart_handle_cts_change(&uap->port, !(status & CTS)); - wake_up_interruptible(&uap->port.info->delta_msr_wait); + wake_up_interruptible(&uap->port.state->port.delta_msr_wait); } if (status & BRK_ABRT) @@ -420,9 +420,9 @@ static void pmz_transmit_chars(struct uart_pmac_port *uap) return; } - if (uap->port.info == NULL) + if (uap->port.state == NULL) goto ack_tx_int; - xmit = &uap->port.info->xmit; + xmit = &uap->port.state->xmit; if (uart_circ_empty(xmit)) { uart_write_wakeup(&uap->port); goto ack_tx_int; @@ -655,7 +655,7 @@ static void pmz_start_tx(struct uart_port *port) port->icount.tx++; port->x_char = 0; } else { - struct circ_buf *xmit = &port->info->xmit; + struct circ_buf *xmit = &port->state->xmit; write_zsdata(uap, xmit->buf[xmit->tail]); zssync(uap); @@ -1645,7 +1645,7 @@ static int pmz_suspend(struct macio_dev *mdev, pm_message_t pm_state) state = pmz_uart_reg.state + uap->port.line; mutex_lock(&pmz_irq_mutex); - mutex_lock(&state->mutex); + mutex_lock(&state->port.mutex); spin_lock_irqsave(&uap->port.lock, flags); @@ -1676,7 +1676,7 @@ static int pmz_suspend(struct macio_dev *mdev, pm_message_t pm_state) /* Shut the chip down */ pmz_set_scc_power(uap, 0); - mutex_unlock(&state->mutex); + mutex_unlock(&state->port.mutex); mutex_unlock(&pmz_irq_mutex); pmz_debug("suspend, switching complete\n"); @@ -1705,7 +1705,7 @@ static int pmz_resume(struct macio_dev *mdev) state = pmz_uart_reg.state + uap->port.line; mutex_lock(&pmz_irq_mutex); - mutex_lock(&state->mutex); + mutex_lock(&state->port.mutex); spin_lock_irqsave(&uap->port.lock, flags); if (!ZS_IS_OPEN(uap) && !ZS_IS_CONS(uap)) { @@ -1737,7 +1737,7 @@ static int pmz_resume(struct macio_dev *mdev) } bail: - mutex_unlock(&state->mutex); + mutex_unlock(&state->port.mutex); mutex_unlock(&pmz_irq_mutex); /* Right now, we deal with delay by blocking here, I'll be diff --git a/drivers/serial/pnx8xxx_uart.c b/drivers/serial/pnx8xxx_uart.c index 1bb8f1b45767..0aa75a97531c 100644 --- a/drivers/serial/pnx8xxx_uart.c +++ b/drivers/serial/pnx8xxx_uart.c @@ -100,7 +100,7 @@ static void pnx8xxx_mctrl_check(struct pnx8xxx_port *sport) if (changed & TIOCM_CTS) uart_handle_cts_change(&sport->port, status & TIOCM_CTS); - wake_up_interruptible(&sport->port.info->delta_msr_wait); + wake_up_interruptible(&sport->port.state->port.delta_msr_wait); } /* @@ -112,7 +112,7 @@ static void pnx8xxx_timeout(unsigned long data) struct pnx8xxx_port *sport = (struct pnx8xxx_port *)data; unsigned long flags; - if (sport->port.info) { + if (sport->port.state) { spin_lock_irqsave(&sport->port.lock, flags); pnx8xxx_mctrl_check(sport); spin_unlock_irqrestore(&sport->port.lock, flags); @@ -181,7 +181,7 @@ static void pnx8xxx_enable_ms(struct uart_port *port) static void pnx8xxx_rx_chars(struct pnx8xxx_port *sport) { - struct tty_struct *tty = sport->port.info->port.tty; + struct tty_struct *tty = sport->port.state->port.tty; unsigned int status, ch, flg; status = FIFO_TO_SM(serial_in(sport, PNX8XXX_FIFO)) | @@ -243,7 +243,7 @@ static void pnx8xxx_rx_chars(struct pnx8xxx_port *sport) static void pnx8xxx_tx_chars(struct pnx8xxx_port *sport) { - struct circ_buf *xmit = &sport->port.info->xmit; + struct circ_buf *xmit = &sport->port.state->xmit; if (sport->port.x_char) { serial_out(sport, PNX8XXX_FIFO, sport->port.x_char); diff --git a/drivers/serial/pxa.c b/drivers/serial/pxa.c index a48a8a13d87b..6443b7ff274a 100644 --- a/drivers/serial/pxa.c +++ b/drivers/serial/pxa.c @@ -96,7 +96,7 @@ static void serial_pxa_stop_rx(struct uart_port *port) static inline void receive_chars(struct uart_pxa_port *up, int *status) { - struct tty_struct *tty = up->port.info->port.tty; + struct tty_struct *tty = up->port.state->port.tty; unsigned int ch, flag; int max_count = 256; @@ -161,7 +161,7 @@ static inline void receive_chars(struct uart_pxa_port *up, int *status) static void transmit_chars(struct uart_pxa_port *up) { - struct circ_buf *xmit = &up->port.info->xmit; + struct circ_buf *xmit = &up->port.state->xmit; int count; if (up->port.x_char) { @@ -220,7 +220,7 @@ static inline void check_modem_status(struct uart_pxa_port *up) if (status & UART_MSR_DCTS) uart_handle_cts_change(&up->port, status & UART_MSR_CTS); - wake_up_interruptible(&up->port.info->delta_msr_wait); + wake_up_interruptible(&up->port.state->port.delta_msr_wait); } /* diff --git a/drivers/serial/sa1100.c b/drivers/serial/sa1100.c index 94530f01521e..7f5e26873220 100644 --- a/drivers/serial/sa1100.c +++ b/drivers/serial/sa1100.c @@ -117,7 +117,7 @@ static void sa1100_mctrl_check(struct sa1100_port *sport) if (changed & TIOCM_CTS) uart_handle_cts_change(&sport->port, status & TIOCM_CTS); - wake_up_interruptible(&sport->port.info->delta_msr_wait); + wake_up_interruptible(&sport->port.state->port.delta_msr_wait); } /* @@ -129,7 +129,7 @@ static void sa1100_timeout(unsigned long data) struct sa1100_port *sport = (struct sa1100_port *)data; unsigned long flags; - if (sport->port.info) { + if (sport->port.state) { spin_lock_irqsave(&sport->port.lock, flags); sa1100_mctrl_check(sport); spin_unlock_irqrestore(&sport->port.lock, flags); @@ -189,7 +189,7 @@ static void sa1100_enable_ms(struct uart_port *port) static void sa1100_rx_chars(struct sa1100_port *sport) { - struct tty_struct *tty = sport->port.info->port.tty; + struct tty_struct *tty = sport->port.state->port.tty; unsigned int status, ch, flg; status = UTSR1_TO_SM(UART_GET_UTSR1(sport)) | @@ -239,7 +239,7 @@ sa1100_rx_chars(struct sa1100_port *sport) static void sa1100_tx_chars(struct sa1100_port *sport) { - struct circ_buf *xmit = &sport->port.info->xmit; + struct circ_buf *xmit = &sport->port.state->xmit; if (sport->port.x_char) { UART_PUT_CHAR(sport, sport->port.x_char); diff --git a/drivers/serial/samsung.c b/drivers/serial/samsung.c index c8851a0db63a..1523e8d9ae77 100644 --- a/drivers/serial/samsung.c +++ b/drivers/serial/samsung.c @@ -196,7 +196,7 @@ s3c24xx_serial_rx_chars(int irq, void *dev_id) { struct s3c24xx_uart_port *ourport = dev_id; struct uart_port *port = &ourport->port; - struct tty_struct *tty = port->info->port.tty; + struct tty_struct *tty = port->state->port.tty; unsigned int ufcon, ch, flag, ufstat, uerstat; int max_count = 64; @@ -281,7 +281,7 @@ static irqreturn_t s3c24xx_serial_tx_chars(int irq, void *id) { struct s3c24xx_uart_port *ourport = id; struct uart_port *port = &ourport->port; - struct circ_buf *xmit = &port->info->xmit; + struct circ_buf *xmit = &port->state->xmit; int count = 256; if (port->x_char) { @@ -992,10 +992,10 @@ static int s3c24xx_serial_cpufreq_transition(struct notifier_block *nb, struct ktermios *termios; struct tty_struct *tty; - if (uport->info == NULL) + if (uport->state == NULL) goto exit; - tty = uport->info->port.tty; + tty = uport->state->port.tty; if (tty == NULL) goto exit; diff --git a/drivers/serial/sb1250-duart.c b/drivers/serial/sb1250-duart.c index 319e8b83f6be..a2f2b3254499 100644 --- a/drivers/serial/sb1250-duart.c +++ b/drivers/serial/sb1250-duart.c @@ -384,13 +384,13 @@ static void sbd_receive_chars(struct sbd_port *sport) uart_insert_char(uport, status, M_DUART_OVRUN_ERR, ch, flag); } - tty_flip_buffer_push(uport->info->port.tty); + tty_flip_buffer_push(uport->state->port.tty); } static void sbd_transmit_chars(struct sbd_port *sport) { struct uart_port *uport = &sport->port; - struct circ_buf *xmit = &sport->port.info->xmit; + struct circ_buf *xmit = &sport->port.state->xmit; unsigned int mask; int stop_tx; @@ -440,7 +440,7 @@ static void sbd_status_handle(struct sbd_port *sport) if (delta & ((M_DUART_IN_PIN2_VAL | M_DUART_IN_PIN0_VAL) << S_DUART_IN_PIN_CHNG)) - wake_up_interruptible(&uport->info->delta_msr_wait); + wake_up_interruptible(&uport->state->port.delta_msr_wait); } static irqreturn_t sbd_interrupt(int irq, void *dev_id) diff --git a/drivers/serial/sc26xx.c b/drivers/serial/sc26xx.c index e0be11ceaa25..75038ad2b242 100644 --- a/drivers/serial/sc26xx.c +++ b/drivers/serial/sc26xx.c @@ -140,8 +140,8 @@ static struct tty_struct *receive_chars(struct uart_port *port) char flag; u8 status; - if (port->info != NULL) /* Unopened serial console */ - tty = port->info->port.tty; + if (port->state != NULL) /* Unopened serial console */ + tty = port->state->port.tty; while (limit-- > 0) { status = READ_SC_PORT(port, SR); @@ -190,10 +190,10 @@ static void transmit_chars(struct uart_port *port) { struct circ_buf *xmit; - if (!port->info) + if (!port->state) return; - xmit = &port->info->xmit; + xmit = &port->state->xmit; if (uart_circ_empty(xmit) || uart_tx_stopped(port)) { sc26xx_disable_irq(port, IMR_TXRDY); return; @@ -316,7 +316,7 @@ static void sc26xx_stop_tx(struct uart_port *port) /* port->lock held by caller. */ static void sc26xx_start_tx(struct uart_port *port) { - struct circ_buf *xmit = &port->info->xmit; + struct circ_buf *xmit = &port->state->xmit; while (!uart_circ_empty(xmit)) { if (!(READ_SC_PORT(port, SR) & SR_TXRDY)) { diff --git a/drivers/serial/serial_core.c b/drivers/serial/serial_core.c index b0bb29d804ae..2514d00c0f6f 100644 --- a/drivers/serial/serial_core.c +++ b/drivers/serial/serial_core.c @@ -29,10 +29,10 @@ #include <linux/console.h> #include <linux/proc_fs.h> #include <linux/seq_file.h> -#include <linux/serial_core.h> #include <linux/smp_lock.h> #include <linux/device.h> #include <linux/serial.h> /* for serial_state and serial_icounter_struct */ +#include <linux/serial_core.h> #include <linux/delay.h> #include <linux/mutex.h> @@ -52,8 +52,6 @@ static struct lock_class_key port_lock_key; #define HIGH_BITS_OFFSET ((sizeof(long)-sizeof(int))*8) -#define uart_users(state) ((state)->count + (state)->info.port.blocked_open) - #ifdef CONFIG_SERIAL_CORE_CONSOLE #define uart_console(port) ((port)->cons && (port)->cons->index == (port)->line) #else @@ -71,19 +69,19 @@ static void uart_change_pm(struct uart_state *state, int pm_state); */ void uart_write_wakeup(struct uart_port *port) { - struct uart_info *info = port->info; + struct uart_state *state = port->state; /* * This means you called this function _after_ the port was * closed. No cookie for you. */ - BUG_ON(!info); - tasklet_schedule(&info->tlet); + BUG_ON(!state); + tasklet_schedule(&state->tlet); } static void uart_stop(struct tty_struct *tty) { struct uart_state *state = tty->driver_data; - struct uart_port *port = state->port; + struct uart_port *port = state->uart_port; unsigned long flags; spin_lock_irqsave(&port->lock, flags); @@ -94,9 +92,9 @@ static void uart_stop(struct tty_struct *tty) static void __uart_start(struct tty_struct *tty) { struct uart_state *state = tty->driver_data; - struct uart_port *port = state->port; + struct uart_port *port = state->uart_port; - if (!uart_circ_empty(&state->info.xmit) && state->info.xmit.buf && + if (!uart_circ_empty(&state->xmit) && state->xmit.buf && !tty->stopped && !tty->hw_stopped) port->ops->start_tx(port); } @@ -104,7 +102,7 @@ static void __uart_start(struct tty_struct *tty) static void uart_start(struct tty_struct *tty) { struct uart_state *state = tty->driver_data; - struct uart_port *port = state->port; + struct uart_port *port = state->uart_port; unsigned long flags; spin_lock_irqsave(&port->lock, flags); @@ -115,7 +113,7 @@ static void uart_start(struct tty_struct *tty) static void uart_tasklet_action(unsigned long data) { struct uart_state *state = (struct uart_state *)data; - tty_wakeup(state->info.port.tty); + tty_wakeup(state->port.tty); } static inline void @@ -141,12 +139,12 @@ uart_update_mctrl(struct uart_port *port, unsigned int set, unsigned int clear) */ static int uart_startup(struct uart_state *state, int init_hw) { - struct uart_info *info = &state->info; - struct uart_port *port = state->port; + struct uart_port *uport = state->uart_port; + struct tty_port *port = &state->port; unsigned long page; int retval = 0; - if (info->flags & UIF_INITIALIZED) + if (port->flags & ASYNC_INITIALIZED) return 0; /* @@ -154,26 +152,26 @@ static int uart_startup(struct uart_state *state, int init_hw) * once we have successfully opened the port. Also set * up the tty->alt_speed kludge */ - set_bit(TTY_IO_ERROR, &info->port.tty->flags); + set_bit(TTY_IO_ERROR, &port->tty->flags); - if (port->type == PORT_UNKNOWN) + if (uport->type == PORT_UNKNOWN) return 0; /* * Initialise and allocate the transmit and temporary * buffer. */ - if (!info->xmit.buf) { + if (!state->xmit.buf) { /* This is protected by the per port mutex */ page = get_zeroed_page(GFP_KERNEL); if (!page) return -ENOMEM; - info->xmit.buf = (unsigned char *) page; - uart_circ_clear(&info->xmit); + state->xmit.buf = (unsigned char *) page; + uart_circ_clear(&state->xmit); } - retval = port->ops->startup(port); + retval = uport->ops->startup(uport); if (retval == 0) { if (init_hw) { /* @@ -185,20 +183,20 @@ static int uart_startup(struct uart_state *state, int init_hw) * Setup the RTS and DTR signals once the * port is open and ready to respond. */ - if (info->port.tty->termios->c_cflag & CBAUD) - uart_set_mctrl(port, TIOCM_RTS | TIOCM_DTR); + if (port->tty->termios->c_cflag & CBAUD) + uart_set_mctrl(uport, TIOCM_RTS | TIOCM_DTR); } - if (info->flags & UIF_CTS_FLOW) { - spin_lock_irq(&port->lock); - if (!(port->ops->get_mctrl(port) & TIOCM_CTS)) - info->port.tty->hw_stopped = 1; - spin_unlock_irq(&port->lock); + if (port->flags & ASYNC_CTS_FLOW) { + spin_lock_irq(&uport->lock); + if (!(uport->ops->get_mctrl(uport) & TIOCM_CTS)) + port->tty->hw_stopped = 1; + spin_unlock_irq(&uport->lock); } - info->flags |= UIF_INITIALIZED; + set_bit(ASYNCB_INITIALIZED, &port->flags); - clear_bit(TTY_IO_ERROR, &info->port.tty->flags); + clear_bit(TTY_IO_ERROR, &port->tty->flags); } if (retval && capable(CAP_SYS_ADMIN)) @@ -214,9 +212,9 @@ static int uart_startup(struct uart_state *state, int init_hw) */ static void uart_shutdown(struct uart_state *state) { - struct uart_info *info = &state->info; - struct uart_port *port = state->port; - struct tty_struct *tty = info->port.tty; + struct uart_port *uport = state->uart_port; + struct tty_port *port = &state->port; + struct tty_struct *tty = port->tty; /* * Set the TTY IO error marker @@ -224,14 +222,12 @@ static void uart_shutdown(struct uart_state *state) if (tty) set_bit(TTY_IO_ERROR, &tty->flags); - if (info->flags & UIF_INITIALIZED) { - info->flags &= ~UIF_INITIALIZED; - + if (test_and_clear_bit(ASYNCB_INITIALIZED, &port->flags)) { /* * Turn off DTR and RTS early. */ if (!tty || (tty->termios->c_cflag & HUPCL)) - uart_clear_mctrl(port, TIOCM_DTR | TIOCM_RTS); + uart_clear_mctrl(uport, TIOCM_DTR | TIOCM_RTS); /* * clear delta_msr_wait queue to avoid mem leaks: we may free @@ -240,30 +236,30 @@ static void uart_shutdown(struct uart_state *state) * any outstanding file descriptors should be pointing at * hung_up_tty_fops now. */ - wake_up_interruptible(&info->delta_msr_wait); + wake_up_interruptible(&port->delta_msr_wait); /* * Free the IRQ and disable the port. */ - port->ops->shutdown(port); + uport->ops->shutdown(uport); /* * Ensure that the IRQ handler isn't running on another CPU. */ - synchronize_irq(port->irq); + synchronize_irq(uport->irq); } /* * kill off our tasklet */ - tasklet_kill(&info->tlet); + tasklet_kill(&state->tlet); /* * Free the transmit buffer page. */ - if (info->xmit.buf) { - free_page((unsigned long)info->xmit.buf); - info->xmit.buf = NULL; + if (state->xmit.buf) { + free_page((unsigned long)state->xmit.buf); + state->xmit.buf = NULL; } } @@ -430,15 +426,16 @@ EXPORT_SYMBOL(uart_get_divisor); static void uart_change_speed(struct uart_state *state, struct ktermios *old_termios) { - struct tty_struct *tty = state->info.port.tty; - struct uart_port *port = state->port; + struct tty_port *port = &state->port; + struct tty_struct *tty = port->tty; + struct uart_port *uport = state->uart_port; struct ktermios *termios; /* * If we have no tty, termios, or the port does not exist, * then we can't set the parameters for this port. */ - if (!tty || !tty->termios || port->type == PORT_UNKNOWN) + if (!tty || !tty->termios || uport->type == PORT_UNKNOWN) return; termios = tty->termios; @@ -447,16 +444,16 @@ uart_change_speed(struct uart_state *state, struct ktermios *old_termios) * Set flags based on termios cflag */ if (termios->c_cflag & CRTSCTS) - state->info.flags |= UIF_CTS_FLOW; + set_bit(ASYNCB_CTS_FLOW, &port->flags); else - state->info.flags &= ~UIF_CTS_FLOW; + clear_bit(ASYNCB_CTS_FLOW, &port->flags); if (termios->c_cflag & CLOCAL) - state->info.flags &= ~UIF_CHECK_CD; + clear_bit(ASYNCB_CHECK_CD, &port->flags); else - state->info.flags |= UIF_CHECK_CD; + set_bit(ASYNCB_CHECK_CD, &port->flags); - port->ops->set_termios(port, termios, old_termios); + uport->ops->set_termios(uport, termios, old_termios); } static inline int @@ -482,7 +479,7 @@ static int uart_put_char(struct tty_struct *tty, unsigned char ch) { struct uart_state *state = tty->driver_data; - return __uart_put_char(state->port, &state->info.xmit, ch); + return __uart_put_char(state->uart_port, &state->xmit, ch); } static void uart_flush_chars(struct tty_struct *tty) @@ -508,8 +505,8 @@ uart_write(struct tty_struct *tty, const unsigned char *buf, int count) return -EL3HLT; } - port = state->port; - circ = &state->info.xmit; + port = state->uart_port; + circ = &state->xmit; if (!circ->buf) return 0; @@ -539,9 +536,9 @@ static int uart_write_room(struct tty_struct *tty) unsigned long flags; int ret; - spin_lock_irqsave(&state->port->lock, flags); - ret = uart_circ_chars_free(&state->info.xmit); - spin_unlock_irqrestore(&state->port->lock, flags); + spin_lock_irqsave(&state->uart_port->lock, flags); + ret = uart_circ_chars_free(&state->xmit); + spin_unlock_irqrestore(&state->uart_port->lock, flags); return ret; } @@ -551,9 +548,9 @@ static int uart_chars_in_buffer(struct tty_struct *tty) unsigned long flags; int ret; - spin_lock_irqsave(&state->port->lock, flags); - ret = uart_circ_chars_pending(&state->info.xmit); - spin_unlock_irqrestore(&state->port->lock, flags); + spin_lock_irqsave(&state->uart_port->lock, flags); + ret = uart_circ_chars_pending(&state->xmit); + spin_unlock_irqrestore(&state->uart_port->lock, flags); return ret; } @@ -572,11 +569,11 @@ static void uart_flush_buffer(struct tty_struct *tty) return; } - port = state->port; + port = state->uart_port; pr_debug("uart_flush_buffer(%d) called\n", tty->index); spin_lock_irqsave(&port->lock, flags); - uart_circ_clear(&state->info.xmit); + uart_circ_clear(&state->xmit); if (port->ops->flush_buffer) port->ops->flush_buffer(port); spin_unlock_irqrestore(&port->lock, flags); @@ -590,7 +587,7 @@ static void uart_flush_buffer(struct tty_struct *tty) static void uart_send_xchar(struct tty_struct *tty, char ch) { struct uart_state *state = tty->driver_data; - struct uart_port *port = state->port; + struct uart_port *port = state->uart_port; unsigned long flags; if (port->ops->send_xchar) @@ -613,13 +610,13 @@ static void uart_throttle(struct tty_struct *tty) uart_send_xchar(tty, STOP_CHAR(tty)); if (tty->termios->c_cflag & CRTSCTS) - uart_clear_mctrl(state->port, TIOCM_RTS); + uart_clear_mctrl(state->uart_port, TIOCM_RTS); } static void uart_unthrottle(struct tty_struct *tty) { struct uart_state *state = tty->driver_data; - struct uart_port *port = state->port; + struct uart_port *port = state->uart_port; if (I_IXOFF(tty)) { if (port->x_char) @@ -635,35 +632,36 @@ static void uart_unthrottle(struct tty_struct *tty) static int uart_get_info(struct uart_state *state, struct serial_struct __user *retinfo) { - struct uart_port *port = state->port; + struct uart_port *uport = state->uart_port; + struct tty_port *port = &state->port; struct serial_struct tmp; memset(&tmp, 0, sizeof(tmp)); /* Ensure the state we copy is consistent and no hardware changes occur as we go */ - mutex_lock(&state->mutex); + mutex_lock(&port->mutex); - tmp.type = port->type; - tmp.line = port->line; - tmp.port = port->iobase; + tmp.type = uport->type; + tmp.line = uport->line; + tmp.port = uport->iobase; if (HIGH_BITS_OFFSET) - tmp.port_high = (long) port->iobase >> HIGH_BITS_OFFSET; - tmp.irq = port->irq; - tmp.flags = port->flags; - tmp.xmit_fifo_size = port->fifosize; - tmp.baud_base = port->uartclk / 16; - tmp.close_delay = state->close_delay / 10; - tmp.closing_wait = state->closing_wait == USF_CLOSING_WAIT_NONE ? + tmp.port_high = (long) uport->iobase >> HIGH_BITS_OFFSET; + tmp.irq = uport->irq; + tmp.flags = uport->flags; + tmp.xmit_fifo_size = uport->fifosize; + tmp.baud_base = uport->uartclk / 16; + tmp.close_delay = port->close_delay / 10; + tmp.closing_wait = port->closing_wait == ASYNC_CLOSING_WAIT_NONE ? ASYNC_CLOSING_WAIT_NONE : - state->closing_wait / 10; - tmp.custom_divisor = port->custom_divisor; - tmp.hub6 = port->hub6; - tmp.io_type = port->iotype; - tmp.iomem_reg_shift = port->regshift; - tmp.iomem_base = (void *)(unsigned long)port->mapbase; + port->closing_wait / 10; + tmp.custom_divisor = uport->custom_divisor; + tmp.hub6 = uport->hub6; + tmp.io_type = uport->iotype; + tmp.iomem_reg_shift = uport->regshift; + tmp.iomem_base = (void *)(unsigned long)uport->mapbase; - mutex_unlock(&state->mutex); + mutex_unlock(&port->mutex); if (copy_to_user(retinfo, &tmp, sizeof(*retinfo))) return -EFAULT; @@ -674,7 +672,8 @@ static int uart_set_info(struct uart_state *state, struct serial_struct __user *newinfo) { struct serial_struct new_serial; - struct uart_port *port = state->port; + struct uart_port *uport = state->uart_port; + struct tty_port *port = &state->port; unsigned long new_port; unsigned int change_irq, change_port, closing_wait; unsigned int old_custom_divisor, close_delay; @@ -691,58 +690,58 @@ static int uart_set_info(struct uart_state *state, new_serial.irq = irq_canonicalize(new_serial.irq); close_delay = new_serial.close_delay * 10; closing_wait = new_serial.closing_wait == ASYNC_CLOSING_WAIT_NONE ? - USF_CLOSING_WAIT_NONE : new_serial.closing_wait * 10; + ASYNC_CLOSING_WAIT_NONE : new_serial.closing_wait * 10; /* - * This semaphore protects state->count. It is also + * This semaphore protects port->count. It is also * very useful to prevent opens. Also, take the * port configuration semaphore to make sure that a * module insertion/removal doesn't change anything * under us. */ - mutex_lock(&state->mutex); + mutex_lock(&port->mutex); - change_irq = !(port->flags & UPF_FIXED_PORT) - && new_serial.irq != port->irq; + change_irq = !(uport->flags & UPF_FIXED_PORT) + && new_serial.irq != uport->irq; /* * Since changing the 'type' of the port changes its resource * allocations, we should treat type changes the same as * IO port changes. */ - change_port = !(port->flags & UPF_FIXED_PORT) - && (new_port != port->iobase || - (unsigned long)new_serial.iomem_base != port->mapbase || - new_serial.hub6 != port->hub6 || - new_serial.io_type != port->iotype || - new_serial.iomem_reg_shift != port->regshift || - new_serial.type != port->type); - - old_flags = port->flags; + change_port = !(uport->flags & UPF_FIXED_PORT) + && (new_port != uport->iobase || + (unsigned long)new_serial.iomem_base != uport->mapbase || + new_serial.hub6 != uport->hub6 || + new_serial.io_type != uport->iotype || + new_serial.iomem_reg_shift != uport->regshift || + new_serial.type != uport->type); + + old_flags = uport->flags; new_flags = new_serial.flags; - old_custom_divisor = port->custom_divisor; + old_custom_divisor = uport->custom_divisor; if (!capable(CAP_SYS_ADMIN)) { retval = -EPERM; if (change_irq || change_port || - (new_serial.baud_base != port->uartclk / 16) || - (close_delay != state->close_delay) || - (closing_wait != state->closing_wait) || + (new_serial.baud_base != uport->uartclk / 16) || + (close_delay != port->close_delay) || + (closing_wait != port->closing_wait) || (new_serial.xmit_fifo_size && - new_serial.xmit_fifo_size != port->fifosize) || + new_serial.xmit_fifo_size != uport->fifosize) || (((new_flags ^ old_flags) & ~UPF_USR_MASK) != 0)) goto exit; - port->flags = ((port->flags & ~UPF_USR_MASK) | + uport->flags = ((uport->flags & ~UPF_USR_MASK) | (new_flags & UPF_USR_MASK)); - port->custom_divisor = new_serial.custom_divisor; + uport->custom_divisor = new_serial.custom_divisor; goto check_and_exit; } /* * Ask the low level driver to verify the settings. */ - if (port->ops->verify_port) - retval = port->ops->verify_port(port, &new_serial); + if (uport->ops->verify_port) + retval = uport->ops->verify_port(uport, &new_serial); if ((new_serial.irq >= nr_irqs) || (new_serial.irq < 0) || (new_serial.baud_base < 9600)) @@ -757,7 +756,7 @@ static int uart_set_info(struct uart_state *state, /* * Make sure that we are the sole user of this port. */ - if (uart_users(state) > 1) + if (tty_port_users(port) > 1) goto exit; /* @@ -771,31 +770,31 @@ static int uart_set_info(struct uart_state *state, unsigned long old_iobase, old_mapbase; unsigned int old_type, old_iotype, old_hub6, old_shift; - old_iobase = port->iobase; - old_mapbase = port->mapbase; - old_type = port->type; - old_hub6 = port->hub6; - old_iotype = port->iotype; - old_shift = port->regshift; + old_iobase = uport->iobase; + old_mapbase = uport->mapbase; + old_type = uport->type; + old_hub6 = uport->hub6; + old_iotype = uport->iotype; + old_shift = uport->regshift; /* * Free and release old regions */ if (old_type != PORT_UNKNOWN) - port->ops->release_port(port); + uport->ops->release_port(uport); - port->iobase = new_port; - port->type = new_serial.type; - port->hub6 = new_serial.hub6; - port->iotype = new_serial.io_type; - port->regshift = new_serial.iomem_reg_shift; - port->mapbase = (unsigned long)new_serial.iomem_base; + uport->iobase = new_port; + uport->type = new_serial.type; + uport->hub6 = new_serial.hub6; + uport->iotype = new_serial.io_type; + uport->regshift = new_serial.iomem_reg_shift; + uport->mapbase = (unsigned long)new_serial.iomem_base; /* * Claim and map the new regions */ - if (port->type != PORT_UNKNOWN) { - retval = port->ops->request_port(port); + if (uport->type != PORT_UNKNOWN) { + retval = uport->ops->request_port(uport); } else { /* Always success - Jean II */ retval = 0; @@ -806,19 +805,19 @@ static int uart_set_info(struct uart_state *state, * new port, try to restore the old settings. */ if (retval && old_type != PORT_UNKNOWN) { - port->iobase = old_iobase; - port->type = old_type; - port->hub6 = old_hub6; - port->iotype = old_iotype; - port->regshift = old_shift; - port->mapbase = old_mapbase; - retval = port->ops->request_port(port); + uport->iobase = old_iobase; + uport->type = old_type; + uport->hub6 = old_hub6; + uport->iotype = old_iotype; + uport->regshift = old_shift; + uport->mapbase = old_mapbase; + retval = uport->ops->request_port(uport); /* * If we failed to restore the old settings, * we fail like this. */ if (retval) - port->type = PORT_UNKNOWN; + uport->type = PORT_UNKNOWN; /* * We failed anyway. @@ -830,45 +829,45 @@ static int uart_set_info(struct uart_state *state, } if (change_irq) - port->irq = new_serial.irq; - if (!(port->flags & UPF_FIXED_PORT)) - port->uartclk = new_serial.baud_base * 16; - port->flags = (port->flags & ~UPF_CHANGE_MASK) | + uport->irq = new_serial.irq; + if (!(uport->flags & UPF_FIXED_PORT)) + uport->uartclk = new_serial.baud_base * 16; + uport->flags = (uport->flags & ~UPF_CHANGE_MASK) | (new_flags & UPF_CHANGE_MASK); - port->custom_divisor = new_serial.custom_divisor; - state->close_delay = close_delay; - state->closing_wait = closing_wait; + uport->custom_divisor = new_serial.custom_divisor; + port->close_delay = close_delay; + port->closing_wait = closing_wait; if (new_serial.xmit_fifo_size) - port->fifosize = new_serial.xmit_fifo_size; - if (state->info.port.tty) - state->info.port.tty->low_latency = - (port->flags & UPF_LOW_LATENCY) ? 1 : 0; + uport->fifosize = new_serial.xmit_fifo_size; + if (port->tty) + port->tty->low_latency = + (uport->flags & UPF_LOW_LATENCY) ? 1 : 0; check_and_exit: retval = 0; - if (port->type == PORT_UNKNOWN) + if (uport->type == PORT_UNKNOWN) goto exit; - if (state->info.flags & UIF_INITIALIZED) { - if (((old_flags ^ port->flags) & UPF_SPD_MASK) || - old_custom_divisor != port->custom_divisor) { + if (port->flags & ASYNC_INITIALIZED) { + if (((old_flags ^ uport->flags) & UPF_SPD_MASK) || + old_custom_divisor != uport->custom_divisor) { /* * If they're setting up a custom divisor or speed, * instead of clearing it, then bitch about it. No * need to rate-limit; it's CAP_SYS_ADMIN only. */ - if (port->flags & UPF_SPD_MASK) { + if (uport->flags & UPF_SPD_MASK) { char buf[64]; printk(KERN_NOTICE "%s sets custom speed on %s. This " "is deprecated.\n", current->comm, - tty_name(state->info.port.tty, buf)); + tty_name(port->tty, buf)); } uart_change_speed(state, NULL); } } else retval = uart_startup(state, 1); exit: - mutex_unlock(&state->mutex); + mutex_unlock(&port->mutex); return retval; } @@ -880,10 +879,11 @@ static int uart_set_info(struct uart_state *state, static int uart_get_lsr_info(struct uart_state *state, unsigned int __user *value) { - struct uart_port *port = state->port; + struct uart_port *uport = state->uart_port; + struct tty_port *port = &state->port; unsigned int result; - result = port->ops->tx_empty(port); + result = uport->ops->tx_empty(uport); /* * If we're about to load something into the transmit @@ -891,9 +891,9 @@ static int uart_get_lsr_info(struct uart_state *state, * avoid a race condition (depending on when the transmit * interrupt happens). */ - if (port->x_char || - ((uart_circ_chars_pending(&state->info.xmit) > 0) && - !state->info.port.tty->stopped && !state->info.port.tty->hw_stopped)) + if (uport->x_char || + ((uart_circ_chars_pending(&state->xmit) > 0) && + !port->tty->stopped && !port->tty->hw_stopped)) result &= ~TIOCSER_TEMT; return put_user(result, value); @@ -902,19 +902,20 @@ static int uart_get_lsr_info(struct uart_state *state, static int uart_tiocmget(struct tty_struct *tty, struct file *file) { struct uart_state *state = tty->driver_data; - struct uart_port *port = state->port; + struct tty_port *port = &state->port; + struct uart_port *uport = state->uart_port; int result = -EIO; - mutex_lock(&state->mutex); + mutex_lock(&port->mutex); if ((!file || !tty_hung_up_p(file)) && !(tty->flags & (1 << TTY_IO_ERROR))) { - result = port->mctrl; + result = uport->mctrl; - spin_lock_irq(&port->lock); - result |= port->ops->get_mctrl(port); - spin_unlock_irq(&port->lock); + spin_lock_irq(&uport->lock); + result |= uport->ops->get_mctrl(uport); + spin_unlock_irq(&uport->lock); } - mutex_unlock(&state->mutex); + mutex_unlock(&port->mutex); return result; } @@ -924,36 +925,39 @@ uart_tiocmset(struct tty_struct *tty, struct file *file, unsigned int set, unsigned int clear) { struct uart_state *state = tty->driver_data; - struct uart_port *port = state->port; + struct uart_port *uport = state->uart_port; + struct tty_port *port = &state->port; int ret = -EIO; - mutex_lock(&state->mutex); + mutex_lock(&port->mutex); if ((!file || !tty_hung_up_p(file)) && !(tty->flags & (1 << TTY_IO_ERROR))) { - uart_update_mctrl(port, set, clear); + uart_update_mctrl(uport, set, clear); ret = 0; } - mutex_unlock(&state->mutex); + mutex_unlock(&port->mutex); return ret; } static int uart_break_ctl(struct tty_struct *tty, int break_state) { struct uart_state *state = tty->driver_data; - struct uart_port *port = state->port; + struct tty_port *port = &state->port; + struct uart_port *uport = state->uart_port; - mutex_lock(&state->mutex); + mutex_lock(&port->mutex); - if (port->type != PORT_UNKNOWN) - port->ops->break_ctl(port, break_state); + if (uport->type != PORT_UNKNOWN) + uport->ops->break_ctl(uport, break_state); - mutex_unlock(&state->mutex); + mutex_unlock(&port->mutex); return 0; } static int uart_do_autoconfig(struct uart_state *state) { - struct uart_port *port = state->port; + struct uart_port *uport = state->uart_port; + struct tty_port *port = &state->port; int flags, ret; if (!capable(CAP_SYS_ADMIN)) @@ -964,33 +968,33 @@ static int uart_do_autoconfig(struct uart_state *state) * changing, and hence any extra opens of the port while * we're auto-configuring. */ - if (mutex_lock_interruptible(&state->mutex)) + if (mutex_lock_interruptible(&port->mutex)) return -ERESTARTSYS; ret = -EBUSY; - if (uart_users(state) == 1) { + if (tty_port_users(port) == 1) { uart_shutdown(state); /* * If we already have a port type configured, * we must release its resources. */ - if (port->type != PORT_UNKNOWN) - port->ops->release_port(port); + if (uport->type != PORT_UNKNOWN) + uport->ops->release_port(uport); flags = UART_CONFIG_TYPE; - if (port->flags & UPF_AUTO_IRQ) + if (uport->flags & UPF_AUTO_IRQ) flags |= UART_CONFIG_IRQ; /* * This will claim the ports resources if * a port is found. */ - port->ops->config_port(port, flags); + uport->ops->config_port(uport, flags); ret = uart_startup(state, 1); } - mutex_unlock(&state->mutex); + mutex_unlock(&port->mutex); return ret; } @@ -999,11 +1003,15 @@ static int uart_do_autoconfig(struct uart_state *state) * - mask passed in arg for lines of interest * (use |'ed TIOCM_RNG/DSR/CD/CTS for masking) * Caller should use TIOCGICOUNT to see which one it was + * + * FIXME: This wants extracting into a common all driver implementation + * of TIOCMWAIT using tty_port. */ static int uart_wait_modem_status(struct uart_state *state, unsigned long arg) { - struct uart_port *port = state->port; + struct uart_port *uport = state->uart_port; + struct tty_port *port = &state->port; DECLARE_WAITQUEUE(wait, current); struct uart_icount cprev, cnow; int ret; @@ -1011,20 +1019,20 @@ uart_wait_modem_status(struct uart_state *state, unsigned long arg) /* * note the counters on entry */ - spin_lock_irq(&port->lock); - memcpy(&cprev, &port->icount, sizeof(struct uart_icount)); + spin_lock_irq(&uport->lock); + memcpy(&cprev, &uport->icount, sizeof(struct uart_icount)); /* * Force modem status interrupts on */ - port->ops->enable_ms(port); - spin_unlock_irq(&port->lock); + uport->ops->enable_ms(uport); + spin_unlock_irq(&uport->lock); - add_wait_queue(&state->info.delta_msr_wait, &wait); + add_wait_queue(&port->delta_msr_wait, &wait); for (;;) { - spin_lock_irq(&port->lock); - memcpy(&cnow, &port->icount, sizeof(struct uart_icount)); - spin_unlock_irq(&port->lock); + spin_lock_irq(&uport->lock); + memcpy(&cnow, &uport->icount, sizeof(struct uart_icount)); + spin_unlock_irq(&uport->lock); set_current_state(TASK_INTERRUPTIBLE); @@ -1048,7 +1056,7 @@ uart_wait_modem_status(struct uart_state *state, unsigned long arg) } current->state = TASK_RUNNING; - remove_wait_queue(&state->info.delta_msr_wait, &wait); + remove_wait_queue(&port->delta_msr_wait, &wait); return ret; } @@ -1064,11 +1072,11 @@ static int uart_get_count(struct uart_state *state, { struct serial_icounter_struct icount; struct uart_icount cnow; - struct uart_port *port = state->port; + struct uart_port *uport = state->uart_port; - spin_lock_irq(&port->lock); - memcpy(&cnow, &port->icount, sizeof(struct uart_icount)); - spin_unlock_irq(&port->lock); + spin_lock_irq(&uport->lock); + memcpy(&cnow, &uport->icount, sizeof(struct uart_icount)); + spin_unlock_irq(&uport->lock); icount.cts = cnow.cts; icount.dsr = cnow.dsr; @@ -1093,6 +1101,7 @@ uart_ioctl(struct tty_struct *tty, struct file *filp, unsigned int cmd, unsigned long arg) { struct uart_state *state = tty->driver_data; + struct tty_port *port = &state->port; void __user *uarg = (void __user *)arg; int ret = -ENOIOCTLCMD; @@ -1143,7 +1152,7 @@ uart_ioctl(struct tty_struct *tty, struct file *filp, unsigned int cmd, if (ret != -ENOIOCTLCMD) goto out; - mutex_lock(&state->mutex); + mutex_lock(&port->mutex); if (tty_hung_up_p(filp)) { ret = -EIO; @@ -1160,14 +1169,14 @@ uart_ioctl(struct tty_struct *tty, struct file *filp, unsigned int cmd, break; default: { - struct uart_port *port = state->port; - if (port->ops->ioctl) - ret = port->ops->ioctl(port, cmd, arg); + struct uart_port *uport = state->uart_port; + if (uport->ops->ioctl) + ret = uport->ops->ioctl(uport, cmd, arg); break; } } out_up: - mutex_unlock(&state->mutex); + mutex_unlock(&port->mutex); out: return ret; } @@ -1175,10 +1184,10 @@ out: static void uart_set_ldisc(struct tty_struct *tty) { struct uart_state *state = tty->driver_data; - struct uart_port *port = state->port; + struct uart_port *uport = state->uart_port; - if (port->ops->set_ldisc) - port->ops->set_ldisc(port); + if (uport->ops->set_ldisc) + uport->ops->set_ldisc(uport); } static void uart_set_termios(struct tty_struct *tty, @@ -1207,7 +1216,7 @@ static void uart_set_termios(struct tty_struct *tty, /* Handle transition to B0 status */ if ((old_termios->c_cflag & CBAUD) && !(cflag & CBAUD)) - uart_clear_mctrl(state->port, TIOCM_RTS | TIOCM_DTR); + uart_clear_mctrl(state->uart_port, TIOCM_RTS | TIOCM_DTR); /* Handle transition away from B0 status */ if (!(old_termios->c_cflag & CBAUD) && (cflag & CBAUD)) { @@ -1215,25 +1224,25 @@ static void uart_set_termios(struct tty_struct *tty, if (!(cflag & CRTSCTS) || !test_bit(TTY_THROTTLED, &tty->flags)) mask |= TIOCM_RTS; - uart_set_mctrl(state->port, mask); + uart_set_mctrl(state->uart_port, mask); } /* Handle turning off CRTSCTS */ if ((old_termios->c_cflag & CRTSCTS) && !(cflag & CRTSCTS)) { - spin_lock_irqsave(&state->port->lock, flags); + spin_lock_irqsave(&state->uart_port->lock, flags); tty->hw_stopped = 0; __uart_start(tty); - spin_unlock_irqrestore(&state->port->lock, flags); + spin_unlock_irqrestore(&state->uart_port->lock, flags); } /* Handle turning on CRTSCTS */ if (!(old_termios->c_cflag & CRTSCTS) && (cflag & CRTSCTS)) { - spin_lock_irqsave(&state->port->lock, flags); - if (!(state->port->ops->get_mctrl(state->port) & TIOCM_CTS)) { + spin_lock_irqsave(&state->uart_port->lock, flags); + if (!(state->uart_port->ops->get_mctrl(state->uart_port) & TIOCM_CTS)) { tty->hw_stopped = 1; - state->port->ops->stop_tx(state->port); + state->uart_port->ops->stop_tx(state->uart_port); } - spin_unlock_irqrestore(&state->port->lock, flags); + spin_unlock_irqrestore(&state->uart_port->lock, flags); } #if 0 /* @@ -1244,7 +1253,7 @@ static void uart_set_termios(struct tty_struct *tty, */ if (!(old_termios->c_cflag & CLOCAL) && (tty->termios->c_cflag & CLOCAL)) - wake_up_interruptible(&info->port.open_wait); + wake_up_interruptible(&state->uart_port.open_wait); #endif } @@ -1256,40 +1265,39 @@ static void uart_set_termios(struct tty_struct *tty, static void uart_close(struct tty_struct *tty, struct file *filp) { struct uart_state *state = tty->driver_data; - struct uart_port *port; + struct tty_port *port; + struct uart_port *uport; BUG_ON(!kernel_locked()); - if (!state || !state->port) - return; + uport = state->uart_port; + port = &state->port; - port = state->port; + pr_debug("uart_close(%d) called\n", uport->line); - pr_debug("uart_close(%d) called\n", port->line); - - mutex_lock(&state->mutex); + mutex_lock(&port->mutex); if (tty_hung_up_p(filp)) goto done; - if ((tty->count == 1) && (state->count != 1)) { + if ((tty->count == 1) && (port->count != 1)) { /* * Uh, oh. tty->count is 1, which means that the tty - * structure will be freed. state->count should always + * structure will be freed. port->count should always * be one in these conditions. If it's greater than * one, we've got real problems, since it means the * serial port won't be shutdown. */ printk(KERN_ERR "uart_close: bad serial port count; tty->count is 1, " - "state->count is %d\n", state->count); - state->count = 1; + "port->count is %d\n", port->count); + port->count = 1; } - if (--state->count < 0) { + if (--port->count < 0) { printk(KERN_ERR "uart_close: bad serial port count for %s: %d\n", - tty->name, state->count); - state->count = 0; + tty->name, port->count); + port->count = 0; } - if (state->count) + if (port->count) goto done; /* @@ -1299,24 +1307,24 @@ static void uart_close(struct tty_struct *tty, struct file *filp) */ tty->closing = 1; - if (state->closing_wait != USF_CLOSING_WAIT_NONE) - tty_wait_until_sent(tty, msecs_to_jiffies(state->closing_wait)); + if (port->closing_wait != ASYNC_CLOSING_WAIT_NONE) + tty_wait_until_sent(tty, msecs_to_jiffies(port->closing_wait)); /* * At this point, we stop accepting input. To do this, we * disable the receive line status interrupts. */ - if (state->info.flags & UIF_INITIALIZED) { + if (port->flags & ASYNC_INITIALIZED) { unsigned long flags; spin_lock_irqsave(&port->lock, flags); - port->ops->stop_rx(port); + uport->ops->stop_rx(uport); spin_unlock_irqrestore(&port->lock, flags); /* * Before we drop DTR, make sure the UART transmitter * has completely drained; this is especially * important if there is a transmit FIFO! */ - uart_wait_until_sent(tty, port->timeout); + uart_wait_until_sent(tty, uport->timeout); } uart_shutdown(state); @@ -1325,29 +1333,29 @@ static void uart_close(struct tty_struct *tty, struct file *filp) tty_ldisc_flush(tty); tty->closing = 0; - state->info.port.tty = NULL; + tty_port_tty_set(port, NULL); - if (state->info.port.blocked_open) { - if (state->close_delay) - msleep_interruptible(state->close_delay); - } else if (!uart_console(port)) { + if (port->blocked_open) { + if (port->close_delay) + msleep_interruptible(port->close_delay); + } else if (!uart_console(uport)) { uart_change_pm(state, 3); } /* * Wake up anyone trying to open this port. */ - state->info.flags &= ~UIF_NORMAL_ACTIVE; - wake_up_interruptible(&state->info.port.open_wait); + clear_bit(ASYNCB_NORMAL_ACTIVE, &port->flags); + wake_up_interruptible(&port->open_wait); - done: - mutex_unlock(&state->mutex); +done: + mutex_unlock(&port->mutex); } static void uart_wait_until_sent(struct tty_struct *tty, int timeout) { struct uart_state *state = tty->driver_data; - struct uart_port *port = state->port; + struct uart_port *port = state->uart_port; unsigned long char_time, expire; if (port->type == PORT_UNKNOWN || port->fifosize == 0) @@ -1412,22 +1420,22 @@ static void uart_wait_until_sent(struct tty_struct *tty, int timeout) static void uart_hangup(struct tty_struct *tty) { struct uart_state *state = tty->driver_data; - struct uart_info *info = &state->info; + struct tty_port *port = &state->port; BUG_ON(!kernel_locked()); - pr_debug("uart_hangup(%d)\n", state->port->line); + pr_debug("uart_hangup(%d)\n", state->uart_port->line); - mutex_lock(&state->mutex); - if (info->flags & UIF_NORMAL_ACTIVE) { + mutex_lock(&port->mutex); + if (port->flags & ASYNC_NORMAL_ACTIVE) { uart_flush_buffer(tty); uart_shutdown(state); - state->count = 0; - info->flags &= ~UIF_NORMAL_ACTIVE; - info->port.tty = NULL; - wake_up_interruptible(&info->port.open_wait); - wake_up_interruptible(&info->delta_msr_wait); + port->count = 0; + clear_bit(ASYNCB_NORMAL_ACTIVE, &port->flags); + tty_port_tty_set(port, NULL); + wake_up_interruptible(&port->open_wait); + wake_up_interruptible(&port->delta_msr_wait); } - mutex_unlock(&state->mutex); + mutex_unlock(&port->mutex); } /* @@ -1438,8 +1446,8 @@ static void uart_hangup(struct tty_struct *tty) */ static void uart_update_termios(struct uart_state *state) { - struct tty_struct *tty = state->info.port.tty; - struct uart_port *port = state->port; + struct tty_struct *tty = state->port.tty; + struct uart_port *port = state->uart_port; if (uart_console(port) && port->cons->cflag) { tty->termios->c_cflag = port->cons->cflag; @@ -1473,27 +1481,27 @@ static int uart_block_til_ready(struct file *filp, struct uart_state *state) { DECLARE_WAITQUEUE(wait, current); - struct uart_info *info = &state->info; - struct uart_port *port = state->port; + struct uart_port *uport = state->uart_port; + struct tty_port *port = &state->port; unsigned int mctrl; - info->port.blocked_open++; - state->count--; + port->blocked_open++; + port->count--; - add_wait_queue(&info->port.open_wait, &wait); + add_wait_queue(&port->open_wait, &wait); while (1) { set_current_state(TASK_INTERRUPTIBLE); /* * If we have been hung up, tell userspace/restart open. */ - if (tty_hung_up_p(filp) || info->port.tty == NULL) + if (tty_hung_up_p(filp) || port->tty == NULL) break; /* * If the port has been closed, tell userspace/restart open. */ - if (!(info->flags & UIF_INITIALIZED)) + if (!(port->flags & ASYNC_INITIALIZED)) break; /* @@ -1506,8 +1514,8 @@ uart_block_til_ready(struct file *filp, struct uart_state *state) * have set TTY_IO_ERROR for a non-existant port. */ if ((filp->f_flags & O_NONBLOCK) || - (info->port.tty->termios->c_cflag & CLOCAL) || - (info->port.tty->flags & (1 << TTY_IO_ERROR))) + (port->tty->termios->c_cflag & CLOCAL) || + (port->tty->flags & (1 << TTY_IO_ERROR))) break; /* @@ -1515,37 +1523,37 @@ uart_block_til_ready(struct file *filp, struct uart_state *state) * not set RTS here - we want to make sure we catch * the data from the modem. */ - if (info->port.tty->termios->c_cflag & CBAUD) - uart_set_mctrl(port, TIOCM_DTR); + if (port->tty->termios->c_cflag & CBAUD) + uart_set_mctrl(uport, TIOCM_DTR); /* * and wait for the carrier to indicate that the * modem is ready for us. */ - spin_lock_irq(&port->lock); - port->ops->enable_ms(port); - mctrl = port->ops->get_mctrl(port); - spin_unlock_irq(&port->lock); + spin_lock_irq(&uport->lock); + uport->ops->enable_ms(uport); + mctrl = uport->ops->get_mctrl(uport); + spin_unlock_irq(&uport->lock); if (mctrl & TIOCM_CAR) break; - mutex_unlock(&state->mutex); + mutex_unlock(&port->mutex); schedule(); - mutex_lock(&state->mutex); + mutex_lock(&port->mutex); if (signal_pending(current)) break; } set_current_state(TASK_RUNNING); - remove_wait_queue(&info->port.open_wait, &wait); + remove_wait_queue(&port->open_wait, &wait); - state->count++; - info->port.blocked_open--; + port->count++; + port->blocked_open--; if (signal_pending(current)) return -ERESTARTSYS; - if (!info->port.tty || tty_hung_up_p(filp)) + if (!port->tty || tty_hung_up_p(filp)) return -EAGAIN; return 0; @@ -1554,24 +1562,26 @@ uart_block_til_ready(struct file *filp, struct uart_state *state) static struct uart_state *uart_get(struct uart_driver *drv, int line) { struct uart_state *state; + struct tty_port *port; int ret = 0; state = drv->state + line; - if (mutex_lock_interruptible(&state->mutex)) { + port = &state->port; + if (mutex_lock_interruptible(&port->mutex)) { ret = -ERESTARTSYS; goto err; } - state->count++; - if (!state->port || state->port->flags & UPF_DEAD) { + port->count++; + if (!state->uart_port || state->uart_port->flags & UPF_DEAD) { ret = -ENXIO; goto err_unlock; } return state; err_unlock: - state->count--; - mutex_unlock(&state->mutex); + port->count--; + mutex_unlock(&port->mutex); err: return ERR_PTR(ret); } @@ -1590,6 +1600,7 @@ static int uart_open(struct tty_struct *tty, struct file *filp) { struct uart_driver *drv = (struct uart_driver *)tty->driver->driver_state; struct uart_state *state; + struct tty_port *port; int retval, line = tty->index; BUG_ON(!kernel_locked()); @@ -1606,16 +1617,18 @@ static int uart_open(struct tty_struct *tty, struct file *filp) /* * We take the semaphore inside uart_get to guarantee that we won't - * be re-entered while allocating the info structure, or while we + * be re-entered while allocating the state structure, or while we * request any IRQs that the driver may need. This also has the nice * side-effect that it delays the action of uart_hangup, so we can - * guarantee that info->port.tty will always contain something reasonable. + * guarantee that state->port.tty will always contain something + * reasonable. */ state = uart_get(drv, line); if (IS_ERR(state)) { retval = PTR_ERR(state); goto fail; } + port = &state->port; /* * Once we set tty->driver_data here, we are guaranteed that @@ -1623,25 +1636,25 @@ static int uart_open(struct tty_struct *tty, struct file *filp) * Any failures from here onwards should not touch the count. */ tty->driver_data = state; - state->port->info = &state->info; - tty->low_latency = (state->port->flags & UPF_LOW_LATENCY) ? 1 : 0; + state->uart_port->state = state; + tty->low_latency = (state->uart_port->flags & UPF_LOW_LATENCY) ? 1 : 0; tty->alt_speed = 0; - state->info.port.tty = tty; + tty_port_tty_set(port, tty); /* * If the port is in the middle of closing, bail out now. */ if (tty_hung_up_p(filp)) { retval = -EAGAIN; - state->count--; - mutex_unlock(&state->mutex); + port->count--; + mutex_unlock(&port->mutex); goto fail; } /* * Make sure the device is in D0 state. */ - if (state->count == 1) + if (port->count == 1) uart_change_pm(state, 0); /* @@ -1654,18 +1667,18 @@ static int uart_open(struct tty_struct *tty, struct file *filp) */ if (retval == 0) retval = uart_block_til_ready(filp, state); - mutex_unlock(&state->mutex); + mutex_unlock(&port->mutex); /* * If this is the first open to succeed, adjust things to suit. */ - if (retval == 0 && !(state->info.flags & UIF_NORMAL_ACTIVE)) { - state->info.flags |= UIF_NORMAL_ACTIVE; + if (retval == 0 && !(port->flags & ASYNC_NORMAL_ACTIVE)) { + set_bit(ASYNCB_NORMAL_ACTIVE, &port->flags); uart_update_termios(state); } - fail: +fail: return retval; } @@ -1687,57 +1700,58 @@ static const char *uart_type(struct uart_port *port) static void uart_line_info(struct seq_file *m, struct uart_driver *drv, int i) { struct uart_state *state = drv->state + i; + struct tty_port *port = &state->port; int pm_state; - struct uart_port *port = state->port; + struct uart_port *uport = state->uart_port; char stat_buf[32]; unsigned int status; int mmio; - if (!port) + if (!uport) return; - mmio = port->iotype >= UPIO_MEM; + mmio = uport->iotype >= UPIO_MEM; seq_printf(m, "%d: uart:%s %s%08llX irq:%d", - port->line, uart_type(port), + uport->line, uart_type(uport), mmio ? "mmio:0x" : "port:", - mmio ? (unsigned long long)port->mapbase - : (unsigned long long) port->iobase, - port->irq); + mmio ? (unsigned long long)uport->mapbase + : (unsigned long long)uport->iobase, + uport->irq); - if (port->type == PORT_UNKNOWN) { + if (uport->type == PORT_UNKNOWN) { seq_putc(m, '\n'); return; } if (capable(CAP_SYS_ADMIN)) { - mutex_lock(&state->mutex); + mutex_lock(&port->mutex); pm_state = state->pm_state; if (pm_state) uart_change_pm(state, 0); - spin_lock_irq(&port->lock); - status = port->ops->get_mctrl(port); - spin_unlock_irq(&port->lock); + spin_lock_irq(&uport->lock); + status = uport->ops->get_mctrl(uport); + spin_unlock_irq(&uport->lock); if (pm_state) uart_change_pm(state, pm_state); - mutex_unlock(&state->mutex); + mutex_unlock(&port->mutex); seq_printf(m, " tx:%d rx:%d", - port->icount.tx, port->icount.rx); - if (port->icount.frame) + uport->icount.tx, uport->icount.rx); + if (uport->icount.frame) seq_printf(m, " fe:%d", - port->icount.frame); - if (port->icount.parity) + uport->icount.frame); + if (uport->icount.parity) seq_printf(m, " pe:%d", - port->icount.parity); - if (port->icount.brk) + uport->icount.parity); + if (uport->icount.brk) seq_printf(m, " brk:%d", - port->icount.brk); - if (port->icount.overrun) + uport->icount.brk); + if (uport->icount.overrun) seq_printf(m, " oe:%d", - port->icount.overrun); + uport->icount.overrun); #define INFOBIT(bit, str) \ - if (port->mctrl & (bit)) \ + if (uport->mctrl & (bit)) \ strncat(stat_buf, (str), sizeof(stat_buf) - \ strlen(stat_buf) - 2) #define STATBIT(bit, str) \ @@ -1958,7 +1972,7 @@ EXPORT_SYMBOL_GPL(uart_set_options); static void uart_change_pm(struct uart_state *state, int pm_state) { - struct uart_port *port = state->port; + struct uart_port *port = state->uart_port; if (state->pm_state != pm_state) { if (port->ops->pm) @@ -1982,132 +1996,138 @@ static int serial_match_port(struct device *dev, void *data) return dev->devt == devt; /* Actually, only one tty per port */ } -int uart_suspend_port(struct uart_driver *drv, struct uart_port *port) +int uart_suspend_port(struct uart_driver *drv, struct uart_port *uport) { - struct uart_state *state = drv->state + port->line; + struct uart_state *state = drv->state + uport->line; + struct tty_port *port = &state->port; struct device *tty_dev; - struct uart_match match = {port, drv}; + struct uart_match match = {uport, drv}; - mutex_lock(&state->mutex); + mutex_lock(&port->mutex); - if (!console_suspend_enabled && uart_console(port)) { + if (!console_suspend_enabled && uart_console(uport)) { /* we're going to avoid suspending serial console */ - mutex_unlock(&state->mutex); + mutex_unlock(&port->mutex); return 0; } - tty_dev = device_find_child(port->dev, &match, serial_match_port); + tty_dev = device_find_child(uport->dev, &match, serial_match_port); if (device_may_wakeup(tty_dev)) { - enable_irq_wake(port->irq); + enable_irq_wake(uport->irq); put_device(tty_dev); - mutex_unlock(&state->mutex); + mutex_unlock(&port->mutex); return 0; } - port->suspended = 1; + uport->suspended = 1; - if (state->info.flags & UIF_INITIALIZED) { - const struct uart_ops *ops = port->ops; + if (port->flags & ASYNC_INITIALIZED) { + const struct uart_ops *ops = uport->ops; int tries; - state->info.flags = (state->info.flags & ~UIF_INITIALIZED) - | UIF_SUSPENDED; + set_bit(ASYNCB_SUSPENDED, &port->flags); + clear_bit(ASYNCB_INITIALIZED, &port->flags); - spin_lock_irq(&port->lock); - ops->stop_tx(port); - ops->set_mctrl(port, 0); - ops->stop_rx(port); - spin_unlock_irq(&port->lock); + spin_lock_irq(&uport->lock); + ops->stop_tx(uport); + ops->set_mctrl(uport, 0); + ops->stop_rx(uport); + spin_unlock_irq(&uport->lock); /* * Wait for the transmitter to empty. */ - for (tries = 3; !ops->tx_empty(port) && tries; tries--) + for (tries = 3; !ops->tx_empty(uport) && tries; tries--) msleep(10); if (!tries) printk(KERN_ERR "%s%s%s%d: Unable to drain " "transmitter\n", - port->dev ? dev_name(port->dev) : "", - port->dev ? ": " : "", + uport->dev ? dev_name(uport->dev) : "", + uport->dev ? ": " : "", drv->dev_name, - drv->tty_driver->name_base + port->line); + drv->tty_driver->name_base + uport->line); - ops->shutdown(port); + ops->shutdown(uport); } /* * Disable the console device before suspending. */ - if (uart_console(port)) - console_stop(port->cons); + if (uart_console(uport)) + console_stop(uport->cons); uart_change_pm(state, 3); - mutex_unlock(&state->mutex); + mutex_unlock(&port->mutex); return 0; } -int uart_resume_port(struct uart_driver *drv, struct uart_port *port) +int uart_resume_port(struct uart_driver *drv, struct uart_port *uport) { - struct uart_state *state = drv->state + port->line; + struct uart_state *state = drv->state + uport->line; + struct tty_port *port = &state->port; struct device *tty_dev; - struct uart_match match = {port, drv}; + struct uart_match match = {uport, drv}; + struct ktermios termios; - mutex_lock(&state->mutex); + mutex_lock(&port->mutex); - if (!console_suspend_enabled && uart_console(port)) { + if (!console_suspend_enabled && uart_console(uport)) { /* no need to resume serial console, it wasn't suspended */ - mutex_unlock(&state->mutex); + /* + * First try to use the console cflag setting. + */ + memset(&termios, 0, sizeof(struct ktermios)); + termios.c_cflag = uport->cons->cflag; + /* + * If that's unset, use the tty termios setting. + */ + if (termios.c_cflag == 0) + termios = *state->port.tty->termios; + else { + termios.c_ispeed = termios.c_ospeed = + tty_termios_input_baud_rate(&termios); + termios.c_ispeed = termios.c_ospeed = + tty_termios_baud_rate(&termios); + } + uport->ops->set_termios(uport, &termios, NULL); + mutex_unlock(&port->mutex); return 0; } - tty_dev = device_find_child(port->dev, &match, serial_match_port); - if (!port->suspended && device_may_wakeup(tty_dev)) { - disable_irq_wake(port->irq); - mutex_unlock(&state->mutex); + tty_dev = device_find_child(uport->dev, &match, serial_match_port); + if (!uport->suspended && device_may_wakeup(tty_dev)) { + disable_irq_wake(uport->irq); + mutex_unlock(&port->mutex); return 0; } - port->suspended = 0; + uport->suspended = 0; /* * Re-enable the console device after suspending. */ - if (uart_console(port)) { - struct ktermios termios; - - /* - * First try to use the console cflag setting. - */ - memset(&termios, 0, sizeof(struct ktermios)); - termios.c_cflag = port->cons->cflag; - - /* - * If that's unset, use the tty termios setting. - */ - if (state->info.port.tty && termios.c_cflag == 0) - termios = *state->info.port.tty->termios; - + if (uart_console(uport)) { uart_change_pm(state, 0); - port->ops->set_termios(port, &termios, NULL); - console_start(port->cons); + uport->ops->set_termios(uport, &termios, NULL); + console_start(uport->cons); } - if (state->info.flags & UIF_SUSPENDED) { - const struct uart_ops *ops = port->ops; + if (port->flags & ASYNC_SUSPENDED) { + const struct uart_ops *ops = uport->ops; int ret; uart_change_pm(state, 0); - spin_lock_irq(&port->lock); - ops->set_mctrl(port, 0); - spin_unlock_irq(&port->lock); - ret = ops->startup(port); + spin_lock_irq(&uport->lock); + ops->set_mctrl(uport, 0); + spin_unlock_irq(&uport->lock); + ret = ops->startup(uport); if (ret == 0) { uart_change_speed(state, NULL); - spin_lock_irq(&port->lock); - ops->set_mctrl(port, port->mctrl); - ops->start_tx(port); - spin_unlock_irq(&port->lock); - state->info.flags |= UIF_INITIALIZED; + spin_lock_irq(&uport->lock); + ops->set_mctrl(uport, uport->mctrl); + ops->start_tx(uport); + spin_unlock_irq(&uport->lock); + set_bit(ASYNCB_INITIALIZED, &port->flags); } else { /* * Failed to resume - maybe hardware went away? @@ -2117,10 +2137,10 @@ int uart_resume_port(struct uart_driver *drv, struct uart_port *port) uart_shutdown(state); } - state->info.flags &= ~UIF_SUSPENDED; + clear_bit(ASYNCB_SUSPENDED, &port->flags); } - mutex_unlock(&state->mutex); + mutex_unlock(&port->mutex); return 0; } @@ -2232,10 +2252,10 @@ static int uart_poll_init(struct tty_driver *driver, int line, char *options) int parity = 'n'; int flow = 'n'; - if (!state || !state->port) + if (!state || !state->uart_port) return -1; - port = state->port; + port = state->uart_port; if (!(port->ops->poll_get_char && port->ops->poll_put_char)) return -1; @@ -2253,10 +2273,10 @@ static int uart_poll_get_char(struct tty_driver *driver, int line) struct uart_state *state = drv->state + line; struct uart_port *port; - if (!state || !state->port) + if (!state || !state->uart_port) return -1; - port = state->port; + port = state->uart_port; return port->ops->poll_get_char(port); } @@ -2266,10 +2286,10 @@ static void uart_poll_put_char(struct tty_driver *driver, int line, char ch) struct uart_state *state = drv->state + line; struct uart_port *port; - if (!state || !state->port) + if (!state || !state->uart_port) return; - port = state->port; + port = state->uart_port; port->ops->poll_put_char(port, ch); } #endif @@ -2360,14 +2380,12 @@ int uart_register_driver(struct uart_driver *drv) */ for (i = 0; i < drv->nr; i++) { struct uart_state *state = drv->state + i; + struct tty_port *port = &state->port; - state->close_delay = 500; /* .5 seconds */ - state->closing_wait = 30000; /* 30 seconds */ - mutex_init(&state->mutex); - - tty_port_init(&state->info.port); - init_waitqueue_head(&state->info.delta_msr_wait); - tasklet_init(&state->info.tlet, uart_tasklet_action, + tty_port_init(port); + port->close_delay = 500; /* .5 seconds */ + port->closing_wait = 30000; /* 30 seconds */ + tasklet_init(&state->tlet, uart_tasklet_action, (unsigned long)state); } @@ -2415,62 +2433,64 @@ struct tty_driver *uart_console_device(struct console *co, int *index) * level uart drivers to expand uart_port, rather than having yet * more levels of structures. */ -int uart_add_one_port(struct uart_driver *drv, struct uart_port *port) +int uart_add_one_port(struct uart_driver *drv, struct uart_port *uport) { struct uart_state *state; + struct tty_port *port; int ret = 0; struct device *tty_dev; BUG_ON(in_interrupt()); - if (port->line >= drv->nr) + if (uport->line >= drv->nr) return -EINVAL; - state = drv->state + port->line; + state = drv->state + uport->line; + port = &state->port; mutex_lock(&port_mutex); - mutex_lock(&state->mutex); - if (state->port) { + mutex_lock(&port->mutex); + if (state->uart_port) { ret = -EINVAL; goto out; } - state->port = port; + state->uart_port = uport; state->pm_state = -1; - port->cons = drv->cons; - port->info = &state->info; + uport->cons = drv->cons; + uport->state = state; /* * If this port is a console, then the spinlock is already * initialised. */ - if (!(uart_console(port) && (port->cons->flags & CON_ENABLED))) { - spin_lock_init(&port->lock); - lockdep_set_class(&port->lock, &port_lock_key); + if (!(uart_console(uport) && (uport->cons->flags & CON_ENABLED))) { + spin_lock_init(&uport->lock); + lockdep_set_class(&uport->lock, &port_lock_key); } - uart_configure_port(drv, state, port); + uart_configure_port(drv, state, uport); /* * Register the port whether it's detected or not. This allows * setserial to be used to alter this ports parameters. */ - tty_dev = tty_register_device(drv->tty_driver, port->line, port->dev); + tty_dev = tty_register_device(drv->tty_driver, uport->line, uport->dev); if (likely(!IS_ERR(tty_dev))) { device_init_wakeup(tty_dev, 1); device_set_wakeup_enable(tty_dev, 0); } else printk(KERN_ERR "Cannot register tty device on line %d\n", - port->line); + uport->line); /* * Ensure UPF_DEAD is not set. */ - port->flags &= ~UPF_DEAD; + uport->flags &= ~UPF_DEAD; out: - mutex_unlock(&state->mutex); + mutex_unlock(&port->mutex); mutex_unlock(&port_mutex); return ret; @@ -2485,16 +2505,16 @@ int uart_add_one_port(struct uart_driver *drv, struct uart_port *port) * core driver. No further calls will be made to the low-level code * for this port. */ -int uart_remove_one_port(struct uart_driver *drv, struct uart_port *port) +int uart_remove_one_port(struct uart_driver *drv, struct uart_port *uport) { - struct uart_state *state = drv->state + port->line; - struct uart_info *info; + struct uart_state *state = drv->state + uport->line; + struct tty_port *port = &state->port; BUG_ON(in_interrupt()); - if (state->port != port) + if (state->uart_port != uport) printk(KERN_ALERT "Removing wrong port: %p != %p\n", - state->port, port); + state->uart_port, uport); mutex_lock(&port_mutex); @@ -2502,37 +2522,35 @@ int uart_remove_one_port(struct uart_driver *drv, struct uart_port *port) * Mark the port "dead" - this prevents any opens from * succeeding while we shut down the port. */ - mutex_lock(&state->mutex); - port->flags |= UPF_DEAD; - mutex_unlock(&state->mutex); + mutex_lock(&port->mutex); + uport->flags |= UPF_DEAD; + mutex_unlock(&port->mutex); /* * Remove the devices from the tty layer */ - tty_unregister_device(drv->tty_driver, port->line); + tty_unregister_device(drv->tty_driver, uport->line); - info = &state->info; - if (info && info->port.tty) - tty_vhangup(info->port.tty); + if (port->tty) + tty_vhangup(port->tty); /* * Free the port IO and memory resources, if any. */ - if (port->type != PORT_UNKNOWN) - port->ops->release_port(port); + if (uport->type != PORT_UNKNOWN) + uport->ops->release_port(uport); /* * Indicate that there isn't a port here anymore. */ - port->type = PORT_UNKNOWN; + uport->type = PORT_UNKNOWN; /* * Kill the tasklet, and free resources. */ - if (info) - tasklet_kill(&info->tlet); + tasklet_kill(&state->tlet); - state->port = NULL; + state->uart_port = NULL; mutex_unlock(&port_mutex); return 0; diff --git a/drivers/serial/serial_cs.c b/drivers/serial/serial_cs.c index ed4648b556c7..a3bb49031a7f 100644 --- a/drivers/serial/serial_cs.c +++ b/drivers/serial/serial_cs.c @@ -884,6 +884,7 @@ static struct pcmcia_device_id serial_ids[] = { PCMCIA_DEVICE_CIS_MANF_CARD(0x0192, 0xa555, "SW_555_SER.cis"), /* Sierra Aircard 555 CDMA 1xrtt Modem -- pre update */ PCMCIA_DEVICE_CIS_MANF_CARD(0x013f, 0xa555, "SW_555_SER.cis"), /* Sierra Aircard 555 CDMA 1xrtt Modem -- post update */ PCMCIA_DEVICE_CIS_PROD_ID12("MultiTech", "PCMCIA 56K DataFax", 0x842047ee, 0xc2efcf03, "cis/MT5634ZLX.cis"), + PCMCIA_DEVICE_CIS_PROD_ID12("ADVANTECH", "COMpad-32/85B-2", 0x96913a85, 0x27ab5437, "COMpad2.cis"), PCMCIA_DEVICE_CIS_PROD_ID12("ADVANTECH", "COMpad-32/85B-4", 0x96913a85, 0xcec8f102, "COMpad4.cis"), PCMCIA_DEVICE_CIS_PROD_ID123("ADVANTECH", "COMpad-32/85", "1.0", 0x96913a85, 0x8fbe92ae, 0x0877b627, "COMpad2.cis"), PCMCIA_DEVICE_CIS_PROD_ID2("RS-COM 2P", 0xad20b156, "cis/RS-COM-2P.cis"), diff --git a/drivers/serial/serial_ks8695.c b/drivers/serial/serial_ks8695.c index 52db5cc3f900..2e71bbc04dac 100644 --- a/drivers/serial/serial_ks8695.c +++ b/drivers/serial/serial_ks8695.c @@ -154,7 +154,7 @@ static void ks8695uart_disable_ms(struct uart_port *port) static irqreturn_t ks8695uart_rx_chars(int irq, void *dev_id) { struct uart_port *port = dev_id; - struct tty_struct *tty = port->info->port.tty; + struct tty_struct *tty = port->state->port.tty; unsigned int status, ch, lsr, flg, max_count = 256; status = UART_GET_LSR(port); /* clears pending LSR interrupts */ @@ -210,7 +210,7 @@ ignore_char: static irqreturn_t ks8695uart_tx_chars(int irq, void *dev_id) { struct uart_port *port = dev_id; - struct circ_buf *xmit = &port->info->xmit; + struct circ_buf *xmit = &port->state->xmit; unsigned int count; if (port->x_char) { @@ -266,7 +266,7 @@ static irqreturn_t ks8695uart_modem_status(int irq, void *dev_id) if (status & URMS_URTERI) port->icount.rng++; - wake_up_interruptible(&port->info->delta_msr_wait); + wake_up_interruptible(&port->state->port.delta_msr_wait); return IRQ_HANDLED; } diff --git a/drivers/serial/serial_lh7a40x.c b/drivers/serial/serial_lh7a40x.c index a7bf024a8286..ea744707c4d6 100644 --- a/drivers/serial/serial_lh7a40x.c +++ b/drivers/serial/serial_lh7a40x.c @@ -138,7 +138,7 @@ static void lh7a40xuart_enable_ms (struct uart_port* port) static void lh7a40xuart_rx_chars (struct uart_port* port) { - struct tty_struct* tty = port->info->port.tty; + struct tty_struct* tty = port->state->port.tty; int cbRxMax = 256; /* (Gross) limit on receive */ unsigned int data; /* Received data and status */ unsigned int flag; @@ -184,7 +184,7 @@ static void lh7a40xuart_rx_chars (struct uart_port* port) static void lh7a40xuart_tx_chars (struct uart_port* port) { - struct circ_buf* xmit = &port->info->xmit; + struct circ_buf* xmit = &port->state->xmit; int cbTxMax = port->fifosize; if (port->x_char) { @@ -241,7 +241,7 @@ static void lh7a40xuart_modem_status (struct uart_port* port) if (delta & CTS) uart_handle_cts_change (port, status & CTS); - wake_up_interruptible (&port->info->delta_msr_wait); + wake_up_interruptible (&port->state->port.delta_msr_wait); } static irqreturn_t lh7a40xuart_int (int irq, void* dev_id) diff --git a/drivers/serial/serial_txx9.c b/drivers/serial/serial_txx9.c index 54dd16d66a4b..0f7cf4c453e6 100644 --- a/drivers/serial/serial_txx9.c +++ b/drivers/serial/serial_txx9.c @@ -272,7 +272,7 @@ static void serial_txx9_initialize(struct uart_port *port) static inline void receive_chars(struct uart_txx9_port *up, unsigned int *status) { - struct tty_struct *tty = up->port.info->port.tty; + struct tty_struct *tty = up->port.state->port.tty; unsigned char ch; unsigned int disr = *status; int max_count = 256; @@ -348,7 +348,7 @@ receive_chars(struct uart_txx9_port *up, unsigned int *status) static inline void transmit_chars(struct uart_txx9_port *up) { - struct circ_buf *xmit = &up->port.info->xmit; + struct circ_buf *xmit = &up->port.state->xmit; int count; if (up->port.x_char) { diff --git a/drivers/serial/sh-sci.c b/drivers/serial/sh-sci.c index 32dc2fc50e6b..85119fb7cb50 100644 --- a/drivers/serial/sh-sci.c +++ b/drivers/serial/sh-sci.c @@ -361,7 +361,7 @@ static inline int sci_rxroom(struct uart_port *port) static void sci_transmit_chars(struct uart_port *port) { - struct circ_buf *xmit = &port->info->xmit; + struct circ_buf *xmit = &port->state->xmit; unsigned int stopped = uart_tx_stopped(port); unsigned short status; unsigned short ctrl; @@ -426,7 +426,7 @@ static void sci_transmit_chars(struct uart_port *port) static inline void sci_receive_chars(struct uart_port *port) { struct sci_port *sci_port = to_sci_port(port); - struct tty_struct *tty = port->info->port.tty; + struct tty_struct *tty = port->state->port.tty; int i, count, copied = 0; unsigned short status; unsigned char flag; @@ -546,7 +546,7 @@ static inline int sci_handle_errors(struct uart_port *port) { int copied = 0; unsigned short status = sci_in(port, SCxSR); - struct tty_struct *tty = port->info->port.tty; + struct tty_struct *tty = port->state->port.tty; if (status & SCxSR_ORER(port)) { /* overrun error */ @@ -600,7 +600,7 @@ static inline int sci_handle_errors(struct uart_port *port) static inline int sci_handle_fifo_overrun(struct uart_port *port) { - struct tty_struct *tty = port->info->port.tty; + struct tty_struct *tty = port->state->port.tty; int copied = 0; if (port->type != PORT_SCIF) @@ -623,7 +623,7 @@ static inline int sci_handle_breaks(struct uart_port *port) { int copied = 0; unsigned short status = sci_in(port, SCxSR); - struct tty_struct *tty = port->info->port.tty; + struct tty_struct *tty = port->state->port.tty; struct sci_port *s = to_sci_port(port); if (uart_handle_break(port)) diff --git a/drivers/serial/sn_console.c b/drivers/serial/sn_console.c index d5276c012f78..9794e0cd3dcc 100644 --- a/drivers/serial/sn_console.c +++ b/drivers/serial/sn_console.c @@ -469,9 +469,9 @@ sn_receive_chars(struct sn_cons_port *port, unsigned long flags) return; } - if (port->sc_port.info) { + if (port->sc_port.state) { /* The serial_core stuffs are initilized, use them */ - tty = port->sc_port.info->port.tty; + tty = port->sc_port.state->port.tty; } else { /* Not registered yet - can't pass to tty layer. */ @@ -550,9 +550,9 @@ static void sn_transmit_chars(struct sn_cons_port *port, int raw) BUG_ON(!port->sc_is_asynch); - if (port->sc_port.info) { + if (port->sc_port.state) { /* We're initilized, using serial core infrastructure */ - xmit = &port->sc_port.info->xmit; + xmit = &port->sc_port.state->xmit; } else { /* Probably sn_sal_switch_to_asynch has been run but serial core isn't * initilized yet. Just return. Writes are going through @@ -927,7 +927,7 @@ sn_sal_console_write(struct console *co, const char *s, unsigned count) /* We can't look at the xmit buffer if we're not registered with serial core * yet. So only do the fancy recovery after registering */ - if (!port->sc_port.info) { + if (!port->sc_port.state) { /* Not yet registered with serial core - simple case */ puts_raw_fixed(port->sc_ops->sal_puts_raw, s, count); return; @@ -936,8 +936,8 @@ sn_sal_console_write(struct console *co, const char *s, unsigned count) /* somebody really wants this output, might be an * oops, kdb, panic, etc. make sure they get it. */ if (spin_is_locked(&port->sc_port.lock)) { - int lhead = port->sc_port.info->xmit.head; - int ltail = port->sc_port.info->xmit.tail; + int lhead = port->sc_port.state->xmit.head; + int ltail = port->sc_port.state->xmit.tail; int counter, got_lock = 0; /* @@ -962,13 +962,13 @@ sn_sal_console_write(struct console *co, const char *s, unsigned count) break; } else { /* still locked */ - if ((lhead != port->sc_port.info->xmit.head) + if ((lhead != port->sc_port.state->xmit.head) || (ltail != - port->sc_port.info->xmit.tail)) { + port->sc_port.state->xmit.tail)) { lhead = - port->sc_port.info->xmit.head; + port->sc_port.state->xmit.head; ltail = - port->sc_port.info->xmit.tail; + port->sc_port.state->xmit.tail; counter = 0; } } diff --git a/drivers/serial/sunhv.c b/drivers/serial/sunhv.c index 1df5325faab2..d548652dee50 100644 --- a/drivers/serial/sunhv.c +++ b/drivers/serial/sunhv.c @@ -184,8 +184,8 @@ static struct tty_struct *receive_chars(struct uart_port *port) { struct tty_struct *tty = NULL; - if (port->info != NULL) /* Unopened serial console */ - tty = port->info->port.tty; + if (port->state != NULL) /* Unopened serial console */ + tty = port->state->port.tty; if (sunhv_ops->receive_chars(port, tty)) sun_do_break(); @@ -197,10 +197,10 @@ static void transmit_chars(struct uart_port *port) { struct circ_buf *xmit; - if (!port->info) + if (!port->state) return; - xmit = &port->info->xmit; + xmit = &port->state->xmit; if (uart_circ_empty(xmit) || uart_tx_stopped(port)) return; diff --git a/drivers/serial/sunsab.c b/drivers/serial/sunsab.c index 0355efe115d9..d1ad34128635 100644 --- a/drivers/serial/sunsab.c +++ b/drivers/serial/sunsab.c @@ -117,8 +117,8 @@ receive_chars(struct uart_sunsab_port *up, int count = 0; int i; - if (up->port.info != NULL) /* Unopened serial console */ - tty = up->port.info->port.tty; + if (up->port.state != NULL) /* Unopened serial console */ + tty = up->port.state->port.tty; /* Read number of BYTES (Character + Status) available. */ if (stat->sreg.isr0 & SAB82532_ISR0_RPF) { @@ -229,7 +229,7 @@ static void sunsab_tx_idle(struct uart_sunsab_port *); static void transmit_chars(struct uart_sunsab_port *up, union sab82532_irq_status *stat) { - struct circ_buf *xmit = &up->port.info->xmit; + struct circ_buf *xmit = &up->port.state->xmit; int i; if (stat->sreg.isr1 & SAB82532_ISR1_ALLS) { @@ -297,7 +297,7 @@ static void check_status(struct uart_sunsab_port *up, up->port.icount.dsr++; } - wake_up_interruptible(&up->port.info->delta_msr_wait); + wake_up_interruptible(&up->port.state->port.delta_msr_wait); } static irqreturn_t sunsab_interrupt(int irq, void *dev_id) @@ -429,7 +429,7 @@ static void sunsab_tx_idle(struct uart_sunsab_port *up) static void sunsab_start_tx(struct uart_port *port) { struct uart_sunsab_port *up = (struct uart_sunsab_port *) port; - struct circ_buf *xmit = &up->port.info->xmit; + struct circ_buf *xmit = &up->port.state->xmit; int i; up->interrupt_mask1 &= ~(SAB82532_IMR1_ALLS|SAB82532_IMR1_XPR); diff --git a/drivers/serial/sunsu.c b/drivers/serial/sunsu.c index 47c6837850b1..68d262b15749 100644 --- a/drivers/serial/sunsu.c +++ b/drivers/serial/sunsu.c @@ -311,7 +311,7 @@ static void sunsu_enable_ms(struct uart_port *port) static struct tty_struct * receive_chars(struct uart_sunsu_port *up, unsigned char *status) { - struct tty_struct *tty = up->port.info->port.tty; + struct tty_struct *tty = up->port.state->port.tty; unsigned char ch, flag; int max_count = 256; int saw_console_brk = 0; @@ -389,7 +389,7 @@ receive_chars(struct uart_sunsu_port *up, unsigned char *status) static void transmit_chars(struct uart_sunsu_port *up) { - struct circ_buf *xmit = &up->port.info->xmit; + struct circ_buf *xmit = &up->port.state->xmit; int count; if (up->port.x_char) { @@ -441,7 +441,7 @@ static void check_modem_status(struct uart_sunsu_port *up) if (status & UART_MSR_DCTS) uart_handle_cts_change(&up->port, status & UART_MSR_CTS); - wake_up_interruptible(&up->port.info->delta_msr_wait); + wake_up_interruptible(&up->port.state->port.delta_msr_wait); } static irqreturn_t sunsu_serial_interrupt(int irq, void *dev_id) diff --git a/drivers/serial/sunzilog.c b/drivers/serial/sunzilog.c index e09d3cebb4fb..ef693ae22e7f 100644 --- a/drivers/serial/sunzilog.c +++ b/drivers/serial/sunzilog.c @@ -328,9 +328,9 @@ sunzilog_receive_chars(struct uart_sunzilog_port *up, unsigned char ch, r1, flag; tty = NULL; - if (up->port.info != NULL && /* Unopened serial console */ - up->port.info->port.tty != NULL) /* Keyboard || mouse */ - tty = up->port.info->port.tty; + if (up->port.state != NULL && /* Unopened serial console */ + up->port.state->port.tty != NULL) /* Keyboard || mouse */ + tty = up->port.state->port.tty; for (;;) { @@ -451,7 +451,7 @@ static void sunzilog_status_handle(struct uart_sunzilog_port *up, uart_handle_cts_change(&up->port, (status & CTS)); - wake_up_interruptible(&up->port.info->delta_msr_wait); + wake_up_interruptible(&up->port.state->port.delta_msr_wait); } up->prev_status = status; @@ -501,9 +501,9 @@ static void sunzilog_transmit_chars(struct uart_sunzilog_port *up, return; } - if (up->port.info == NULL) + if (up->port.state == NULL) goto ack_tx_int; - xmit = &up->port.info->xmit; + xmit = &up->port.state->xmit; if (uart_circ_empty(xmit)) goto ack_tx_int; @@ -705,7 +705,7 @@ static void sunzilog_start_tx(struct uart_port *port) port->icount.tx++; port->x_char = 0; } else { - struct circ_buf *xmit = &port->info->xmit; + struct circ_buf *xmit = &port->state->xmit; writeb(xmit->buf[xmit->tail], &channel->data); ZSDELAY(); diff --git a/drivers/serial/timbuart.c b/drivers/serial/timbuart.c index 063a313b755c..34b31da01d09 100644 --- a/drivers/serial/timbuart.c +++ b/drivers/serial/timbuart.c @@ -77,7 +77,7 @@ static void timbuart_flush_buffer(struct uart_port *port) static void timbuart_rx_chars(struct uart_port *port) { - struct tty_struct *tty = port->info->port.tty; + struct tty_struct *tty = port->state->port.tty; while (ioread32(port->membase + TIMBUART_ISR) & RXDP) { u8 ch = ioread8(port->membase + TIMBUART_RXFIFO); @@ -86,7 +86,7 @@ static void timbuart_rx_chars(struct uart_port *port) } spin_unlock(&port->lock); - tty_flip_buffer_push(port->info->port.tty); + tty_flip_buffer_push(port->state->port.tty); spin_lock(&port->lock); dev_dbg(port->dev, "%s - total read %d bytes\n", @@ -95,7 +95,7 @@ static void timbuart_rx_chars(struct uart_port *port) static void timbuart_tx_chars(struct uart_port *port) { - struct circ_buf *xmit = &port->info->xmit; + struct circ_buf *xmit = &port->state->xmit; while (!(ioread32(port->membase + TIMBUART_ISR) & TXBF) && !uart_circ_empty(xmit)) { @@ -118,7 +118,7 @@ static void timbuart_handle_tx_port(struct uart_port *port, u32 isr, u32 *ier) { struct timbuart_port *uart = container_of(port, struct timbuart_port, port); - struct circ_buf *xmit = &port->info->xmit; + struct circ_buf *xmit = &port->state->xmit; if (uart_circ_empty(xmit) || uart_tx_stopped(port)) return; @@ -231,7 +231,7 @@ static void timbuart_mctrl_check(struct uart_port *port, u32 isr, u32 *ier) iowrite32(CTS_DELTA, port->membase + TIMBUART_ISR); cts = timbuart_get_mctrl(port); uart_handle_cts_change(port, cts & TIOCM_CTS); - wake_up_interruptible(&port->info->delta_msr_wait); + wake_up_interruptible(&port->state->port.delta_msr_wait); } *ier |= CTS_DELTA; diff --git a/drivers/serial/uartlite.c b/drivers/serial/uartlite.c index 3317148a4b93..377f2712289e 100644 --- a/drivers/serial/uartlite.c +++ b/drivers/serial/uartlite.c @@ -75,7 +75,7 @@ static struct uart_port ulite_ports[ULITE_NR_UARTS]; static int ulite_receive(struct uart_port *port, int stat) { - struct tty_struct *tty = port->info->port.tty; + struct tty_struct *tty = port->state->port.tty; unsigned char ch = 0; char flag = TTY_NORMAL; @@ -125,7 +125,7 @@ static int ulite_receive(struct uart_port *port, int stat) static int ulite_transmit(struct uart_port *port, int stat) { - struct circ_buf *xmit = &port->info->xmit; + struct circ_buf *xmit = &port->state->xmit; if (stat & ULITE_STATUS_TXFULL) return 0; @@ -154,17 +154,22 @@ static int ulite_transmit(struct uart_port *port, int stat) static irqreturn_t ulite_isr(int irq, void *dev_id) { struct uart_port *port = dev_id; - int busy; + int busy, n = 0; do { int stat = readb(port->membase + ULITE_STATUS); busy = ulite_receive(port, stat); busy |= ulite_transmit(port, stat); + n++; } while (busy); - tty_flip_buffer_push(port->info->port.tty); - - return IRQ_HANDLED; + /* work done? */ + if (n > 1) { + tty_flip_buffer_push(port->state->port.tty); + return IRQ_HANDLED; + } else { + return IRQ_NONE; + } } static unsigned int ulite_tx_empty(struct uart_port *port) @@ -221,7 +226,7 @@ static int ulite_startup(struct uart_port *port) int ret; ret = request_irq(port->irq, ulite_isr, - IRQF_DISABLED | IRQF_SAMPLE_RANDOM, "uartlite", port); + IRQF_SHARED | IRQF_SAMPLE_RANDOM, "uartlite", port); if (ret) return ret; diff --git a/drivers/serial/ucc_uart.c b/drivers/serial/ucc_uart.c index e945e780b5c9..0c08f286a2ef 100644 --- a/drivers/serial/ucc_uart.c +++ b/drivers/serial/ucc_uart.c @@ -327,7 +327,7 @@ static int qe_uart_tx_pump(struct uart_qe_port *qe_port) unsigned char *p; unsigned int count; struct uart_port *port = &qe_port->port; - struct circ_buf *xmit = &port->info->xmit; + struct circ_buf *xmit = &port->state->xmit; bdp = qe_port->rx_cur; @@ -466,7 +466,7 @@ static void qe_uart_int_rx(struct uart_qe_port *qe_port) int i; unsigned char ch, *cp; struct uart_port *port = &qe_port->port; - struct tty_struct *tty = port->info->port.tty; + struct tty_struct *tty = port->state->port.tty; struct qe_bd *bdp; u16 status; unsigned int flg; diff --git a/drivers/serial/vr41xx_siu.c b/drivers/serial/vr41xx_siu.c index dac550e57c29..3beb6ab4fa68 100644 --- a/drivers/serial/vr41xx_siu.c +++ b/drivers/serial/vr41xx_siu.c @@ -318,7 +318,7 @@ static inline void receive_chars(struct uart_port *port, uint8_t *status) char flag; int max_count = RX_MAX_COUNT; - tty = port->info->port.tty; + tty = port->state->port.tty; lsr = *status; do { @@ -386,7 +386,7 @@ static inline void check_modem_status(struct uart_port *port) if (msr & UART_MSR_DCTS) uart_handle_cts_change(port, msr & UART_MSR_CTS); - wake_up_interruptible(&port->info->delta_msr_wait); + wake_up_interruptible(&port->state->port.delta_msr_wait); } static inline void transmit_chars(struct uart_port *port) @@ -394,7 +394,7 @@ static inline void transmit_chars(struct uart_port *port) struct circ_buf *xmit; int max_count = TX_MAX_COUNT; - xmit = &port->info->xmit; + xmit = &port->state->xmit; if (port->x_char) { siu_write(port, UART_TX, port->x_char); diff --git a/drivers/serial/zs.c b/drivers/serial/zs.c index d8c2809b1ab6..1a7fd3e70315 100644 --- a/drivers/serial/zs.c +++ b/drivers/serial/zs.c @@ -602,12 +602,12 @@ static void zs_receive_chars(struct zs_port *zport) uart_insert_char(uport, status, Rx_OVR, ch, flag); } - tty_flip_buffer_push(uport->info->port.tty); + tty_flip_buffer_push(uport->state->port.tty); } static void zs_raw_transmit_chars(struct zs_port *zport) { - struct circ_buf *xmit = &zport->port.info->xmit; + struct circ_buf *xmit = &zport->port.state->xmit; /* XON/XOFF chars. */ if (zport->port.x_char) { @@ -686,7 +686,7 @@ static void zs_status_handle(struct zs_port *zport, struct zs_port *zport_a) uport->icount.rng++; if (delta) - wake_up_interruptible(&uport->info->delta_msr_wait); + wake_up_interruptible(&uport->state->port.delta_msr_wait); spin_lock(&scc->zlock); } diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c index 2bfc41ece0e1..85a1a55815cf 100644 --- a/drivers/usb/class/cdc-acm.c +++ b/drivers/usb/class/cdc-acm.c @@ -858,10 +858,7 @@ static void acm_tty_set_termios(struct tty_struct *tty, if (!ACM_READY(acm)) return; - /* FIXME: Needs to support the tty_baud interface */ - /* FIXME: Broken on sparc */ - newline.dwDTERate = cpu_to_le32p(acm_tty_speed + - (termios->c_cflag & CBAUD & ~CBAUDEX) + (termios->c_cflag & CBAUDEX ? 15 : 0)); + newline.dwDTERate = cpu_to_le32(tty_get_baud_rate(tty)); newline.bCharFormat = termios->c_cflag & CSTOPB ? 2 : 0; newline.bParityType = termios->c_cflag & PARENB ? (termios->c_cflag & PARODD ? 1 : 2) + diff --git a/drivers/usb/serial/ark3116.c b/drivers/usb/serial/ark3116.c index aec61880f36c..5d25d3e52bf6 100644 --- a/drivers/usb/serial/ark3116.c +++ b/drivers/usb/serial/ark3116.c @@ -35,11 +35,6 @@ static struct usb_device_id id_table [] = { }; MODULE_DEVICE_TABLE(usb, id_table); -struct ark3116_private { - spinlock_t lock; - u8 termios_initialized; -}; - static inline void ARK3116_SND(struct usb_serial *serial, int seq, __u8 request, __u8 requesttype, __u16 value, __u16 index) @@ -82,22 +77,11 @@ static inline void ARK3116_RCV_QUIET(struct usb_serial *serial, static int ark3116_attach(struct usb_serial *serial) { char *buf; - struct ark3116_private *priv; - int i; - - for (i = 0; i < serial->num_ports; ++i) { - priv = kzalloc(sizeof(struct ark3116_private), GFP_KERNEL); - if (!priv) - goto cleanup; - spin_lock_init(&priv->lock); - - usb_set_serial_port_data(serial->port[i], priv); - } buf = kmalloc(1, GFP_KERNEL); if (!buf) { dbg("error kmalloc -> out of mem?"); - goto cleanup; + return -ENOMEM; } /* 3 */ @@ -149,13 +133,16 @@ static int ark3116_attach(struct usb_serial *serial) kfree(buf); return 0; +} -cleanup: - for (--i; i >= 0; --i) { - kfree(usb_get_serial_port_data(serial->port[i])); - usb_set_serial_port_data(serial->port[i], NULL); - } - return -ENOMEM; +static void ark3116_init_termios(struct tty_struct *tty) +{ + struct ktermios *termios = tty->termios; + *termios = tty_std_termios; + termios->c_cflag = B9600 | CS8 + | CREAD | HUPCL | CLOCAL; + termios->c_ispeed = 9600; + termios->c_ospeed = 9600; } static void ark3116_set_termios(struct tty_struct *tty, @@ -163,10 +150,8 @@ static void ark3116_set_termios(struct tty_struct *tty, struct ktermios *old_termios) { struct usb_serial *serial = port->serial; - struct ark3116_private *priv = usb_get_serial_port_data(port); struct ktermios *termios = tty->termios; unsigned int cflag = termios->c_cflag; - unsigned long flags; int baud; int ark3116_baud; char *buf; @@ -176,16 +161,6 @@ static void ark3116_set_termios(struct tty_struct *tty, dbg("%s - port %d", __func__, port->number); - spin_lock_irqsave(&priv->lock, flags); - if (!priv->termios_initialized) { - *termios = tty_std_termios; - termios->c_cflag = B9600 | CS8 - | CREAD | HUPCL | CLOCAL; - termios->c_ispeed = 9600; - termios->c_ospeed = 9600; - priv->termios_initialized = 1; - } - spin_unlock_irqrestore(&priv->lock, flags); cflag = termios->c_cflag; termios->c_cflag &= ~(CMSPAR|CRTSCTS); @@ -318,8 +293,7 @@ static void ark3116_set_termios(struct tty_struct *tty, return; } -static int ark3116_open(struct tty_struct *tty, struct usb_serial_port *port, - struct file *filp) +static int ark3116_open(struct tty_struct *tty, struct usb_serial_port *port) { struct ktermios tmp_termios; struct usb_serial *serial = port->serial; @@ -334,7 +308,7 @@ static int ark3116_open(struct tty_struct *tty, struct usb_serial_port *port, return -ENOMEM; } - result = usb_serial_generic_open(tty, port, filp); + result = usb_serial_generic_open(tty, port); if (result) goto err_out; @@ -455,6 +429,7 @@ static struct usb_serial_driver ark3116_device = { .num_ports = 1, .attach = ark3116_attach, .set_termios = ark3116_set_termios, + .init_termios = ark3116_init_termios, .ioctl = ark3116_ioctl, .tiocmget = ark3116_tiocmget, .open = ark3116_open, diff --git a/drivers/usb/serial/belkin_sa.c b/drivers/usb/serial/belkin_sa.c index 7033b031b443..a0467bc61627 100644 --- a/drivers/usb/serial/belkin_sa.c +++ b/drivers/usb/serial/belkin_sa.c @@ -92,7 +92,7 @@ static int debug; static int belkin_sa_startup(struct usb_serial *serial); static void belkin_sa_release(struct usb_serial *serial); static int belkin_sa_open(struct tty_struct *tty, - struct usb_serial_port *port, struct file *filp); + struct usb_serial_port *port); static void belkin_sa_close(struct usb_serial_port *port); static void belkin_sa_read_int_callback(struct urb *urb); static void belkin_sa_set_termios(struct tty_struct *tty, @@ -213,7 +213,7 @@ static void belkin_sa_release(struct usb_serial *serial) static int belkin_sa_open(struct tty_struct *tty, - struct usb_serial_port *port, struct file *filp) + struct usb_serial_port *port) { int retval = 0; diff --git a/drivers/usb/serial/ch341.c b/drivers/usb/serial/ch341.c index 2830766f5b39..8c894a7d5dcf 100644 --- a/drivers/usb/serial/ch341.c +++ b/drivers/usb/serial/ch341.c @@ -300,8 +300,7 @@ static void ch341_close(struct usb_serial_port *port) /* open this device, set default parameters */ -static int ch341_open(struct tty_struct *tty, struct usb_serial_port *port, - struct file *filp) +static int ch341_open(struct tty_struct *tty, struct usb_serial_port *port) { struct usb_serial *serial = port->serial; struct ch341_private *priv = usb_get_serial_port_data(serial->port[0]); @@ -333,7 +332,7 @@ static int ch341_open(struct tty_struct *tty, struct usb_serial_port *port, return -EPROTO; } - r = usb_serial_generic_open(tty, port, filp); + r = usb_serial_generic_open(tty, port); out: return r; } diff --git a/drivers/usb/serial/console.c b/drivers/usb/serial/console.c index 0e4f2e41ace5..b22ac3258523 100644 --- a/drivers/usb/serial/console.c +++ b/drivers/usb/serial/console.c @@ -16,6 +16,7 @@ #include <linux/slab.h> #include <linux/tty.h> #include <linux/console.h> +#include <linux/serial.h> #include <linux/usb.h> #include <linux/usb/serial.h> @@ -63,7 +64,7 @@ static int usb_console_setup(struct console *co, char *options) char *s; struct usb_serial *serial; struct usb_serial_port *port; - int retval = 0; + int retval; struct tty_struct *tty = NULL; struct ktermios *termios = NULL, dummy; @@ -116,13 +117,17 @@ static int usb_console_setup(struct console *co, char *options) return -ENODEV; } - port = serial->port[0]; + retval = usb_autopm_get_interface(serial->interface); + if (retval) + goto error_get_interface; + + port = serial->port[co->index - serial->minor]; tty_port_tty_set(&port->port, NULL); info->port = port; ++port->port.count; - if (port->port.count == 1) { + if (!test_bit(ASYNCB_INITIALIZED, &port->port.flags)) { if (serial->type->set_termios) { /* * allocate a fake tty so the driver can initialize @@ -150,9 +155,9 @@ static int usb_console_setup(struct console *co, char *options) /* only call the device specific open if this * is the first time the port is opened */ if (serial->type->open) - retval = serial->type->open(NULL, port, NULL); + retval = serial->type->open(NULL, port); else - retval = usb_serial_generic_open(NULL, port, NULL); + retval = usb_serial_generic_open(NULL, port); if (retval) { err("could not open USB console port"); @@ -168,6 +173,7 @@ static int usb_console_setup(struct console *co, char *options) kfree(termios); kfree(tty); } + set_bit(ASYNCB_INITIALIZED, &port->port.flags); } /* Now that any required fake tty operations are completed restore * the tty port count */ @@ -175,18 +181,22 @@ static int usb_console_setup(struct console *co, char *options) /* The console is special in terms of closing the device so * indicate this port is now acting as a system console. */ port->console = 1; - retval = 0; -out: + mutex_unlock(&serial->disc_mutex); return retval; -free_termios: + + free_termios: kfree(termios); tty_port_tty_set(&port->port, NULL); -free_tty: + free_tty: kfree(tty); -reset_open_count: + reset_open_count: port->port.count = 0; - goto out; + usb_autopm_put_interface(serial->interface); + error_get_interface: + usb_serial_put(serial); + mutex_unlock(&serial->disc_mutex); + return retval; } static void usb_console_write(struct console *co, diff --git a/drivers/usb/serial/cp210x.c b/drivers/usb/serial/cp210x.c index 985cbcf48bda..4a208fe85bc9 100644 --- a/drivers/usb/serial/cp210x.c +++ b/drivers/usb/serial/cp210x.c @@ -33,8 +33,7 @@ /* * Function Prototypes */ -static int cp210x_open(struct tty_struct *, struct usb_serial_port *, - struct file *); +static int cp210x_open(struct tty_struct *tty, struct usb_serial_port *); static void cp210x_cleanup(struct usb_serial_port *); static void cp210x_close(struct usb_serial_port *); static void cp210x_get_termios(struct tty_struct *, @@ -368,8 +367,7 @@ static unsigned int cp210x_quantise_baudrate(unsigned int baud) { return baud; } -static int cp210x_open(struct tty_struct *tty, struct usb_serial_port *port, - struct file *filp) +static int cp210x_open(struct tty_struct *tty, struct usb_serial_port *port) { struct usb_serial *serial = port->serial; int result; @@ -399,12 +397,6 @@ static int cp210x_open(struct tty_struct *tty, struct usb_serial_port *port, /* Configure the termios structure */ cp210x_get_termios(tty, port); - - /* Set the DTR and RTS pins low */ - cp210x_tiocmset_port(tty ? (struct usb_serial_port *) tty->driver_data - : port, - NULL, TIOCM_DTR | TIOCM_RTS, 0); - return 0; } diff --git a/drivers/usb/serial/cyberjack.c b/drivers/usb/serial/cyberjack.c index 336523fd7366..b0f6402a91ca 100644 --- a/drivers/usb/serial/cyberjack.c +++ b/drivers/usb/serial/cyberjack.c @@ -61,7 +61,7 @@ static int cyberjack_startup(struct usb_serial *serial); static void cyberjack_disconnect(struct usb_serial *serial); static void cyberjack_release(struct usb_serial *serial); static int cyberjack_open(struct tty_struct *tty, - struct usb_serial_port *port, struct file *filp); + struct usb_serial_port *port); static void cyberjack_close(struct usb_serial_port *port); static int cyberjack_write(struct tty_struct *tty, struct usb_serial_port *port, const unsigned char *buf, int count); @@ -173,7 +173,7 @@ static void cyberjack_release(struct usb_serial *serial) } static int cyberjack_open(struct tty_struct *tty, - struct usb_serial_port *port, struct file *filp) + struct usb_serial_port *port) { struct cyberjack_private *priv; unsigned long flags; diff --git a/drivers/usb/serial/cypress_m8.c b/drivers/usb/serial/cypress_m8.c index 59adfe123110..e0a8b715f2f2 100644 --- a/drivers/usb/serial/cypress_m8.c +++ b/drivers/usb/serial/cypress_m8.c @@ -172,8 +172,7 @@ static int cypress_earthmate_startup(struct usb_serial *serial); static int cypress_hidcom_startup(struct usb_serial *serial); static int cypress_ca42v2_startup(struct usb_serial *serial); static void cypress_release(struct usb_serial *serial); -static int cypress_open(struct tty_struct *tty, - struct usb_serial_port *port, struct file *filp); +static int cypress_open(struct tty_struct *tty, struct usb_serial_port *port); static void cypress_close(struct usb_serial_port *port); static void cypress_dtr_rts(struct usb_serial_port *port, int on); static int cypress_write(struct tty_struct *tty, struct usb_serial_port *port, @@ -633,8 +632,7 @@ static void cypress_release(struct usb_serial *serial) } -static int cypress_open(struct tty_struct *tty, - struct usb_serial_port *port, struct file *filp) +static int cypress_open(struct tty_struct *tty, struct usb_serial_port *port) { struct cypress_private *priv = usb_get_serial_port_data(port); struct usb_serial *serial = port->serial; @@ -659,15 +657,7 @@ static int cypress_open(struct tty_struct *tty, spin_unlock_irqrestore(&priv->lock, flags); /* Set termios */ - result = cypress_write(tty, port, NULL, 0); - - if (result) { - dev_err(&port->dev, - "%s - failed setting the control lines - error %d\n", - __func__, result); - return result; - } else - dbg("%s - success setting the control lines", __func__); + cypress_send(port); if (tty) cypress_set_termios(tty, port, &priv->tmp_termios); @@ -1005,6 +995,8 @@ static void cypress_set_termios(struct tty_struct *tty, dbg("%s - port %d", __func__, port->number); spin_lock_irqsave(&priv->lock, flags); + /* We can't clean this one up as we don't know the device type + early enough */ if (!priv->termios_initialized) { if (priv->chiptype == CT_EARTHMATE) { *(tty->termios) = tty_std_termios; diff --git a/drivers/usb/serial/digi_acceleport.c b/drivers/usb/serial/digi_acceleport.c index f4808091c47c..ab3dd991586b 100644 --- a/drivers/usb/serial/digi_acceleport.c +++ b/drivers/usb/serial/digi_acceleport.c @@ -453,8 +453,7 @@ static int digi_write(struct tty_struct *tty, struct usb_serial_port *port, static void digi_write_bulk_callback(struct urb *urb); static int digi_write_room(struct tty_struct *tty); static int digi_chars_in_buffer(struct tty_struct *tty); -static int digi_open(struct tty_struct *tty, struct usb_serial_port *port, - struct file *filp); +static int digi_open(struct tty_struct *tty, struct usb_serial_port *port); static void digi_close(struct usb_serial_port *port); static int digi_carrier_raised(struct usb_serial_port *port); static void digi_dtr_rts(struct usb_serial_port *port, int on); @@ -1347,8 +1346,7 @@ static int digi_carrier_raised(struct usb_serial_port *port) return 0; } -static int digi_open(struct tty_struct *tty, struct usb_serial_port *port, - struct file *filp) +static int digi_open(struct tty_struct *tty, struct usb_serial_port *port) { int ret; unsigned char buf[32]; diff --git a/drivers/usb/serial/empeg.c b/drivers/usb/serial/empeg.c index 80cb3471adbe..33c9e9cf9eb2 100644 --- a/drivers/usb/serial/empeg.c +++ b/drivers/usb/serial/empeg.c @@ -79,8 +79,7 @@ static int debug; #define EMPEG_PRODUCT_ID 0x0001 /* function prototypes for an empeg-car player */ -static int empeg_open(struct tty_struct *tty, struct usb_serial_port *port, - struct file *filp); +static int empeg_open(struct tty_struct *tty, struct usb_serial_port *port); static void empeg_close(struct usb_serial_port *port); static int empeg_write(struct tty_struct *tty, struct usb_serial_port *port, const unsigned char *buf, @@ -90,8 +89,7 @@ static int empeg_chars_in_buffer(struct tty_struct *tty); static void empeg_throttle(struct tty_struct *tty); static void empeg_unthrottle(struct tty_struct *tty); static int empeg_startup(struct usb_serial *serial); -static void empeg_set_termios(struct tty_struct *tty, - struct usb_serial_port *port, struct ktermios *old_termios); +static void empeg_init_termios(struct tty_struct *tty); static void empeg_write_bulk_callback(struct urb *urb); static void empeg_read_bulk_callback(struct urb *urb); @@ -123,7 +121,7 @@ static struct usb_serial_driver empeg_device = { .throttle = empeg_throttle, .unthrottle = empeg_unthrottle, .attach = empeg_startup, - .set_termios = empeg_set_termios, + .init_termios = empeg_init_termios, .write = empeg_write, .write_room = empeg_write_room, .chars_in_buffer = empeg_chars_in_buffer, @@ -142,17 +140,13 @@ static int bytes_out; /****************************************************************************** * Empeg specific driver functions ******************************************************************************/ -static int empeg_open(struct tty_struct *tty, struct usb_serial_port *port, - struct file *filp) +static int empeg_open(struct tty_struct *tty,struct usb_serial_port *port) { struct usb_serial *serial = port->serial; int result = 0; dbg("%s - port %d", __func__, port->number); - /* Force default termio settings */ - empeg_set_termios(tty, port, NULL) ; - bytes_in = 0; bytes_out = 0; @@ -425,11 +419,9 @@ static int empeg_startup(struct usb_serial *serial) } -static void empeg_set_termios(struct tty_struct *tty, - struct usb_serial_port *port, struct ktermios *old_termios) +static void empeg_init_termios(struct tty_struct *tty) { struct ktermios *termios = tty->termios; - dbg("%s - port %d", __func__, port->number); /* * The empeg-car player wants these particular tty settings. diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c index 8fec5d4455c9..76a17f915eef 100644 --- a/drivers/usb/serial/ftdi_sio.c +++ b/drivers/usb/serial/ftdi_sio.c @@ -747,8 +747,7 @@ static int ftdi_sio_probe(struct usb_serial *serial, const struct usb_device_id *id); static int ftdi_sio_port_probe(struct usb_serial_port *port); static int ftdi_sio_port_remove(struct usb_serial_port *port); -static int ftdi_open(struct tty_struct *tty, - struct usb_serial_port *port, struct file *filp); +static int ftdi_open(struct tty_struct *tty, struct usb_serial_port *port); static void ftdi_close(struct usb_serial_port *port); static void ftdi_dtr_rts(struct usb_serial_port *port, int on); static int ftdi_write(struct tty_struct *tty, struct usb_serial_port *port, @@ -1680,8 +1679,7 @@ static int ftdi_sio_port_remove(struct usb_serial_port *port) return 0; } -static int ftdi_open(struct tty_struct *tty, - struct usb_serial_port *port, struct file *filp) +static int ftdi_open(struct tty_struct *tty, struct usb_serial_port *port) { /* ftdi_open */ struct usb_device *dev = port->serial->dev; struct ftdi_private *priv = usb_get_serial_port_data(port); diff --git a/drivers/usb/serial/garmin_gps.c b/drivers/usb/serial/garmin_gps.c index 8839f1c70b7f..20432d345529 100644 --- a/drivers/usb/serial/garmin_gps.c +++ b/drivers/usb/serial/garmin_gps.c @@ -933,8 +933,7 @@ static int garmin_init_session(struct usb_serial_port *port) -static int garmin_open(struct tty_struct *tty, - struct usb_serial_port *port, struct file *filp) +static int garmin_open(struct tty_struct *tty, struct usb_serial_port *port) { unsigned long flags; int status = 0; diff --git a/drivers/usb/serial/generic.c b/drivers/usb/serial/generic.c index ce57f6a32bdf..d9398e9f30ce 100644 --- a/drivers/usb/serial/generic.c +++ b/drivers/usb/serial/generic.c @@ -114,8 +114,7 @@ void usb_serial_generic_deregister(void) #endif } -int usb_serial_generic_open(struct tty_struct *tty, - struct usb_serial_port *port, struct file *filp) +int usb_serial_generic_open(struct tty_struct *tty, struct usb_serial_port *port) { struct usb_serial *serial = port->serial; int result = 0; diff --git a/drivers/usb/serial/io_edgeport.c b/drivers/usb/serial/io_edgeport.c index 0191693625d6..dc0f832657e6 100644 --- a/drivers/usb/serial/io_edgeport.c +++ b/drivers/usb/serial/io_edgeport.c @@ -205,8 +205,7 @@ static void edge_bulk_out_data_callback(struct urb *urb); static void edge_bulk_out_cmd_callback(struct urb *urb); /* function prototypes for the usbserial callbacks */ -static int edge_open(struct tty_struct *tty, struct usb_serial_port *port, - struct file *filp); +static int edge_open(struct tty_struct *tty, struct usb_serial_port *port); static void edge_close(struct usb_serial_port *port); static int edge_write(struct tty_struct *tty, struct usb_serial_port *port, const unsigned char *buf, int count); @@ -852,8 +851,7 @@ static void edge_bulk_out_cmd_callback(struct urb *urb) * If successful, we return 0 * Otherwise we return a negative error number. *****************************************************************************/ -static int edge_open(struct tty_struct *tty, - struct usb_serial_port *port, struct file *filp) +static int edge_open(struct tty_struct *tty, struct usb_serial_port *port) { struct edgeport_port *edge_port = usb_get_serial_port_data(port); struct usb_serial *serial; diff --git a/drivers/usb/serial/io_ti.c b/drivers/usb/serial/io_ti.c index e8bc42f92e79..d4cc0f7af400 100644 --- a/drivers/usb/serial/io_ti.c +++ b/drivers/usb/serial/io_ti.c @@ -1831,8 +1831,7 @@ static void edge_bulk_out_callback(struct urb *urb) tty_kref_put(tty); } -static int edge_open(struct tty_struct *tty, - struct usb_serial_port *port, struct file *filp) +static int edge_open(struct tty_struct *tty, struct usb_serial_port *port) { struct edgeport_port *edge_port = usb_get_serial_port_data(port); struct edgeport_serial *edge_serial; diff --git a/drivers/usb/serial/ipaq.c b/drivers/usb/serial/ipaq.c index 2545d45ce16f..24fcc64b837d 100644 --- a/drivers/usb/serial/ipaq.c +++ b/drivers/usb/serial/ipaq.c @@ -75,7 +75,7 @@ static int initial_wait; /* Function prototypes for an ipaq */ static int ipaq_open(struct tty_struct *tty, - struct usb_serial_port *port, struct file *filp); + struct usb_serial_port *port); static void ipaq_close(struct usb_serial_port *port); static int ipaq_calc_num_ports(struct usb_serial *serial); static int ipaq_startup(struct usb_serial *serial); @@ -587,7 +587,7 @@ static int bytes_in; static int bytes_out; static int ipaq_open(struct tty_struct *tty, - struct usb_serial_port *port, struct file *filp) + struct usb_serial_port *port) { struct usb_serial *serial = port->serial; struct ipaq_private *priv; @@ -628,11 +628,6 @@ static int ipaq_open(struct tty_struct *tty, priv->free_len += PACKET_SIZE; } - if (tty) { - /* FIXME: These two are bogus */ - tty->raw = 1; - tty->real_raw = 1; - } /* * Lose the small buffers usbserial provides. Make larger ones. */ diff --git a/drivers/usb/serial/ipw.c b/drivers/usb/serial/ipw.c index 29ad038b9c8d..727d323f092a 100644 --- a/drivers/usb/serial/ipw.c +++ b/drivers/usb/serial/ipw.c @@ -193,8 +193,7 @@ static void ipw_read_bulk_callback(struct urb *urb) return; } -static int ipw_open(struct tty_struct *tty, - struct usb_serial_port *port, struct file *filp) +static int ipw_open(struct tty_struct *tty, struct usb_serial_port *port) { struct usb_device *dev = port->serial->dev; u8 buf_flow_static[16] = IPW_BYTES_FLOWINIT; diff --git a/drivers/usb/serial/ir-usb.c b/drivers/usb/serial/ir-usb.c index 66009b6b763a..95d8d26b9a44 100644 --- a/drivers/usb/serial/ir-usb.c +++ b/drivers/usb/serial/ir-usb.c @@ -86,8 +86,7 @@ static int buffer_size; static int xbof = -1; static int ir_startup (struct usb_serial *serial); -static int ir_open(struct tty_struct *tty, struct usb_serial_port *port, - struct file *filep); +static int ir_open(struct tty_struct *tty, struct usb_serial_port *port); static void ir_close(struct usb_serial_port *port); static int ir_write(struct tty_struct *tty, struct usb_serial_port *port, const unsigned char *buf, int count); @@ -296,8 +295,7 @@ static int ir_startup(struct usb_serial *serial) return 0; } -static int ir_open(struct tty_struct *tty, - struct usb_serial_port *port, struct file *filp) +static int ir_open(struct tty_struct *tty, struct usb_serial_port *port) { char *buffer; int result = 0; diff --git a/drivers/usb/serial/iuu_phoenix.c b/drivers/usb/serial/iuu_phoenix.c index 96873a7a32b0..6138c1cda35f 100644 --- a/drivers/usb/serial/iuu_phoenix.c +++ b/drivers/usb/serial/iuu_phoenix.c @@ -71,7 +71,6 @@ struct iuu_private { spinlock_t lock; /* store irq state */ wait_queue_head_t delta_msr_wait; u8 line_status; - u8 termios_initialized; int tiostatus; /* store IUART SIGNAL for tiocmget call */ u8 reset; /* if 1 reset is needed */ int poll; /* number of poll */ @@ -1018,14 +1017,24 @@ static void iuu_close(struct usb_serial_port *port) } } -static int iuu_open(struct tty_struct *tty, - struct usb_serial_port *port, struct file *filp) +static void iuu_init_termios(struct tty_struct *tty) +{ + *(tty->termios) = tty_std_termios; + tty->termios->c_cflag = CLOCAL | CREAD | CS8 | B9600 + | TIOCM_CTS | CSTOPB | PARENB; + tty->termios->c_ispeed = 9600; + tty->termios->c_ospeed = 9600; + tty->termios->c_lflag = 0; + tty->termios->c_oflag = 0; + tty->termios->c_iflag = 0; +} + +static int iuu_open(struct tty_struct *tty, struct usb_serial_port *port) { struct usb_serial *serial = port->serial; u8 *buf; int result; u32 actual; - unsigned long flags; struct iuu_private *priv = usb_get_serial_port_data(port); dbg("%s - port %d", __func__, port->number); @@ -1064,21 +1073,7 @@ static int iuu_open(struct tty_struct *tty, port->bulk_in_buffer, 512, NULL, NULL); - /* set the termios structure */ - spin_lock_irqsave(&priv->lock, flags); - if (tty && !priv->termios_initialized) { - *(tty->termios) = tty_std_termios; - tty->termios->c_cflag = CLOCAL | CREAD | CS8 | B9600 - | TIOCM_CTS | CSTOPB | PARENB; - tty->termios->c_ispeed = 9600; - tty->termios->c_ospeed = 9600; - tty->termios->c_lflag = 0; - tty->termios->c_oflag = 0; - tty->termios->c_iflag = 0; - priv->termios_initialized = 1; - priv->poll = 0; - } - spin_unlock_irqrestore(&priv->lock, flags); + priv->poll = 0; /* initialize writebuf */ #define FISH(a, b, c, d) do { \ @@ -1201,6 +1196,7 @@ static struct usb_serial_driver iuu_device = { .tiocmget = iuu_tiocmget, .tiocmset = iuu_tiocmset, .set_termios = iuu_set_termios, + .init_termios = iuu_init_termios, .attach = iuu_startup, .release = iuu_release, }; diff --git a/drivers/usb/serial/keyspan.c b/drivers/usb/serial/keyspan.c index 2594b8743d3f..f8c4b07033ff 100644 --- a/drivers/usb/serial/keyspan.c +++ b/drivers/usb/serial/keyspan.c @@ -1209,8 +1209,7 @@ static int keyspan_write_room(struct tty_struct *tty) } -static int keyspan_open(struct tty_struct *tty, - struct usb_serial_port *port, struct file *filp) +static int keyspan_open(struct tty_struct *tty, struct usb_serial_port *port) { struct keyspan_port_private *p_priv; struct keyspan_serial_private *s_priv; diff --git a/drivers/usb/serial/keyspan.h b/drivers/usb/serial/keyspan.h index 3107ed15af64..30771e5b3973 100644 --- a/drivers/usb/serial/keyspan.h +++ b/drivers/usb/serial/keyspan.h @@ -36,8 +36,7 @@ /* Function prototypes for Keyspan serial converter */ static int keyspan_open (struct tty_struct *tty, - struct usb_serial_port *port, - struct file *filp); + struct usb_serial_port *port); static void keyspan_close (struct usb_serial_port *port); static void keyspan_dtr_rts (struct usb_serial_port *port, int on); static int keyspan_startup (struct usb_serial *serial); diff --git a/drivers/usb/serial/keyspan_pda.c b/drivers/usb/serial/keyspan_pda.c index d0b12e40c2b1..257c16cc6b2a 100644 --- a/drivers/usb/serial/keyspan_pda.c +++ b/drivers/usb/serial/keyspan_pda.c @@ -681,7 +681,7 @@ static int keyspan_pda_carrier_raised(struct usb_serial_port *port) static int keyspan_pda_open(struct tty_struct *tty, - struct usb_serial_port *port, struct file *filp) + struct usb_serial_port *port) { struct usb_serial *serial = port->serial; unsigned char room; diff --git a/drivers/usb/serial/kl5kusb105.c b/drivers/usb/serial/kl5kusb105.c index 0f44bb8e8d4f..a61673133d7d 100644 --- a/drivers/usb/serial/kl5kusb105.c +++ b/drivers/usb/serial/kl5kusb105.c @@ -75,8 +75,7 @@ static int debug; static int klsi_105_startup(struct usb_serial *serial); static void klsi_105_disconnect(struct usb_serial *serial); static void klsi_105_release(struct usb_serial *serial); -static int klsi_105_open(struct tty_struct *tty, - struct usb_serial_port *port, struct file *filp); +static int klsi_105_open(struct tty_struct *tty, struct usb_serial_port *port); static void klsi_105_close(struct usb_serial_port *port); static int klsi_105_write(struct tty_struct *tty, struct usb_serial_port *port, const unsigned char *buf, int count); @@ -358,8 +357,7 @@ static void klsi_105_release(struct usb_serial *serial) } } /* klsi_105_release */ -static int klsi_105_open(struct tty_struct *tty, - struct usb_serial_port *port, struct file *filp) +static int klsi_105_open(struct tty_struct *tty, struct usb_serial_port *port) { struct klsi_105_private *priv = usb_get_serial_port_data(port); int retval = 0; @@ -371,10 +369,6 @@ static int klsi_105_open(struct tty_struct *tty, dbg("%s port %d", __func__, port->number); - /* force low_latency on so that our tty_push actually forces - * the data through - * tty->low_latency = 1; */ - /* Do a defined restart: * Set up sane default baud rate and send the 'READ_ON' * vendor command. diff --git a/drivers/usb/serial/kobil_sct.c b/drivers/usb/serial/kobil_sct.c index 6db0e561f680..45ea694b3ae6 100644 --- a/drivers/usb/serial/kobil_sct.c +++ b/drivers/usb/serial/kobil_sct.c @@ -70,8 +70,7 @@ static int debug; /* Function prototypes */ static int kobil_startup(struct usb_serial *serial); static void kobil_release(struct usb_serial *serial); -static int kobil_open(struct tty_struct *tty, - struct usb_serial_port *port, struct file *filp); +static int kobil_open(struct tty_struct *tty, struct usb_serial_port *port); static void kobil_close(struct usb_serial_port *port); static int kobil_write(struct tty_struct *tty, struct usb_serial_port *port, const unsigned char *buf, int count); @@ -85,7 +84,7 @@ static void kobil_read_int_callback(struct urb *urb); static void kobil_write_callback(struct urb *purb); static void kobil_set_termios(struct tty_struct *tty, struct usb_serial_port *port, struct ktermios *old); - +static void kobil_init_termios(struct tty_struct *tty); static struct usb_device_id id_table [] = { { USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_ADAPTER_B_PRODUCT_ID) }, @@ -120,6 +119,7 @@ static struct usb_serial_driver kobil_device = { .release = kobil_release, .ioctl = kobil_ioctl, .set_termios = kobil_set_termios, + .init_termios = kobil_init_termios, .tiocmget = kobil_tiocmget, .tiocmset = kobil_tiocmset, .open = kobil_open, @@ -210,9 +210,17 @@ static void kobil_release(struct usb_serial *serial) kfree(usb_get_serial_port_data(serial->port[i])); } +static void kobil_init_termios(struct tty_struct *tty) +{ + /* Default to echo off and other sane device settings */ + tty->termios->c_lflag = 0; + tty->termios->c_lflag &= ~(ISIG | ICANON | ECHO | IEXTEN | XCASE); + tty->termios->c_iflag = IGNBRK | IGNPAR | IXOFF; + /* do NOT translate CR to CR-NL (0x0A -> 0x0A 0x0D) */ + tty->termios->c_oflag &= ~ONLCR; +} -static int kobil_open(struct tty_struct *tty, - struct usb_serial_port *port, struct file *filp) +static int kobil_open(struct tty_struct *tty, struct usb_serial_port *port) { int result = 0; struct kobil_private *priv; @@ -226,16 +234,6 @@ static int kobil_open(struct tty_struct *tty, /* someone sets the dev to 0 if the close method has been called */ port->interrupt_in_urb->dev = port->serial->dev; - if (tty) { - - /* Default to echo off and other sane device settings */ - tty->termios->c_lflag = 0; - tty->termios->c_lflag &= ~(ISIG | ICANON | ECHO | IEXTEN | - XCASE); - tty->termios->c_iflag = IGNBRK | IGNPAR | IXOFF; - /* do NOT translate CR to CR-NL (0x0A -> 0x0A 0x0D) */ - tty->termios->c_oflag &= ~ONLCR; - } /* allocate memory for transfer buffer */ transfer_buffer = kzalloc(transfer_buffer_length, GFP_KERNEL); if (!transfer_buffer) diff --git a/drivers/usb/serial/mct_u232.c b/drivers/usb/serial/mct_u232.c index d8825e159aa5..ad4998bbf16f 100644 --- a/drivers/usb/serial/mct_u232.c +++ b/drivers/usb/serial/mct_u232.c @@ -93,8 +93,7 @@ static int debug; */ static int mct_u232_startup(struct usb_serial *serial); static void mct_u232_release(struct usb_serial *serial); -static int mct_u232_open(struct tty_struct *tty, - struct usb_serial_port *port, struct file *filp); +static int mct_u232_open(struct tty_struct *tty, struct usb_serial_port *port); static void mct_u232_close(struct usb_serial_port *port); static void mct_u232_dtr_rts(struct usb_serial_port *port, int on); static void mct_u232_read_int_callback(struct urb *urb); @@ -421,8 +420,7 @@ static void mct_u232_release(struct usb_serial *serial) } } /* mct_u232_release */ -static int mct_u232_open(struct tty_struct *tty, - struct usb_serial_port *port, struct file *filp) +static int mct_u232_open(struct tty_struct *tty, struct usb_serial_port *port) { struct usb_serial *serial = port->serial; struct mct_u232_private *priv = usb_get_serial_port_data(port); @@ -568,10 +566,13 @@ static void mct_u232_read_int_callback(struct urb *urb) * Work-a-round: handle the 'usual' bulk-in pipe here */ if (urb->transfer_buffer_length > 2) { - tty = tty_port_tty_get(&port->port); if (urb->actual_length) { - tty_insert_flip_string(tty, data, urb->actual_length); - tty_flip_buffer_push(tty); + tty = tty_port_tty_get(&port->port); + if (tty) { + tty_insert_flip_string(tty, data, + urb->actual_length); + tty_flip_buffer_push(tty); + } tty_kref_put(tty); } goto exit; diff --git a/drivers/usb/serial/mos7720.c b/drivers/usb/serial/mos7720.c index ccd4dd340d2c..763e32a44be0 100644 --- a/drivers/usb/serial/mos7720.c +++ b/drivers/usb/serial/mos7720.c @@ -85,7 +85,7 @@ static int debug; #define MOSCHIP_DEVICE_ID_7720 0x7720 #define MOSCHIP_DEVICE_ID_7715 0x7715 -static struct usb_device_id moschip_port_id_table [] = { +static struct usb_device_id moschip_port_id_table[] = { { USB_DEVICE(USB_VENDOR_ID_MOSCHIP, MOSCHIP_DEVICE_ID_7720) }, { } /* terminating entry */ }; @@ -319,8 +319,7 @@ static int send_mos_cmd(struct usb_serial *serial, __u8 request, __u16 value, return status; } -static int mos7720_open(struct tty_struct *tty, - struct usb_serial_port *port, struct file *filp) +static int mos7720_open(struct tty_struct *tty, struct usb_serial_port *port) { struct usb_serial *serial; struct usb_serial_port *port0; @@ -378,10 +377,14 @@ static int mos7720_open(struct tty_struct *tty, /* Initialize MCS7720 -- Write Init values to corresponding Registers * * Register Index + * 0 : THR/RHR * 1 : IER * 2 : FCR * 3 : LCR * 4 : MCR + * 5 : LSR + * 6 : MSR + * 7 : SPR * * 0x08 : SP1/2 Control Reg */ @@ -1250,20 +1253,88 @@ static void mos7720_set_termios(struct tty_struct *tty, static int get_lsr_info(struct tty_struct *tty, struct moschip_port *mos7720_port, unsigned int __user *value) { - int count; + struct usb_serial_port *port = tty->driver_data; unsigned int result = 0; + unsigned char data = 0; + int port_number = port->number - port->serial->minor; + int count; count = mos7720_chars_in_buffer(tty); if (count == 0) { - dbg("%s -- Empty", __func__); - result = TIOCSER_TEMT; + send_mos_cmd(port->serial, MOS_READ, port_number, + UART_LSR, &data); + if ((data & (UART_LSR_TEMT | UART_LSR_THRE)) + == (UART_LSR_TEMT | UART_LSR_THRE)) { + dbg("%s -- Empty", __func__); + result = TIOCSER_TEMT; + } } - if (copy_to_user(value, &result, sizeof(int))) return -EFAULT; return 0; } +static int mos7720_tiocmget(struct tty_struct *tty, struct file *file) +{ + struct usb_serial_port *port = tty->driver_data; + struct moschip_port *mos7720_port = usb_get_serial_port_data(port); + unsigned int result = 0; + unsigned int mcr ; + unsigned int msr ; + + dbg("%s - port %d", __func__, port->number); + + mcr = mos7720_port->shadowMCR; + msr = mos7720_port->shadowMSR; + + result = ((mcr & UART_MCR_DTR) ? TIOCM_DTR : 0) /* 0x002 */ + | ((mcr & UART_MCR_RTS) ? TIOCM_RTS : 0) /* 0x004 */ + | ((msr & UART_MSR_CTS) ? TIOCM_CTS : 0) /* 0x020 */ + | ((msr & UART_MSR_DCD) ? TIOCM_CAR : 0) /* 0x040 */ + | ((msr & UART_MSR_RI) ? TIOCM_RI : 0) /* 0x080 */ + | ((msr & UART_MSR_DSR) ? TIOCM_DSR : 0); /* 0x100 */ + + dbg("%s -- %x", __func__, result); + + return result; +} + +static int mos7720_tiocmset(struct tty_struct *tty, struct file *file, + unsigned int set, unsigned int clear) +{ + struct usb_serial_port *port = tty->driver_data; + struct moschip_port *mos7720_port = usb_get_serial_port_data(port); + unsigned int mcr ; + unsigned char lmcr; + + dbg("%s - port %d", __func__, port->number); + dbg("he was at tiocmget"); + + mcr = mos7720_port->shadowMCR; + + if (set & TIOCM_RTS) + mcr |= UART_MCR_RTS; + if (set & TIOCM_DTR) + mcr |= UART_MCR_DTR; + if (set & TIOCM_LOOP) + mcr |= UART_MCR_LOOP; + + if (clear & TIOCM_RTS) + mcr &= ~UART_MCR_RTS; + if (clear & TIOCM_DTR) + mcr &= ~UART_MCR_DTR; + if (clear & TIOCM_LOOP) + mcr &= ~UART_MCR_LOOP; + + mos7720_port->shadowMCR = mcr; + lmcr = mos7720_port->shadowMCR; + + send_mos_cmd(port->serial, MOS_WRITE, + port->number - port->serial->minor, UART_MCR, &lmcr); + + return 0; +} + static int set_modem_info(struct moschip_port *mos7720_port, unsigned int cmd, unsigned int __user *value) { @@ -1301,14 +1372,6 @@ static int set_modem_info(struct moschip_port *mos7720_port, unsigned int cmd, mcr &= ~UART_MCR_LOOP; break; - case TIOCMSET: - /* turn off the RTS and DTR and LOOPBACK - * and then only turn on what was asked to */ - mcr &= ~(UART_MCR_RTS | UART_MCR_DTR | UART_MCR_LOOP); - mcr |= ((arg & TIOCM_RTS) ? UART_MCR_RTS : 0); - mcr |= ((arg & TIOCM_DTR) ? UART_MCR_DTR : 0); - mcr |= ((arg & TIOCM_LOOP) ? UART_MCR_LOOP : 0); - break; } mos7720_port->shadowMCR = mcr; @@ -1320,28 +1383,6 @@ static int set_modem_info(struct moschip_port *mos7720_port, unsigned int cmd, return 0; } -static int get_modem_info(struct moschip_port *mos7720_port, - unsigned int __user *value) -{ - unsigned int result = 0; - unsigned int msr = mos7720_port->shadowMSR; - unsigned int mcr = mos7720_port->shadowMCR; - - result = ((mcr & UART_MCR_DTR) ? TIOCM_DTR: 0) /* 0x002 */ - | ((mcr & UART_MCR_RTS) ? TIOCM_RTS: 0) /* 0x004 */ - | ((msr & UART_MSR_CTS) ? TIOCM_CTS: 0) /* 0x020 */ - | ((msr & UART_MSR_DCD) ? TIOCM_CAR: 0) /* 0x040 */ - | ((msr & UART_MSR_RI) ? TIOCM_RI: 0) /* 0x080 */ - | ((msr & UART_MSR_DSR) ? TIOCM_DSR: 0); /* 0x100 */ - - - dbg("%s -- %x", __func__, result); - - if (copy_to_user(value, &result, sizeof(int))) - return -EFAULT; - return 0; -} - static int get_serial_info(struct moschip_port *mos7720_port, struct serial_struct __user *retinfo) { @@ -1392,17 +1433,11 @@ static int mos7720_ioctl(struct tty_struct *tty, struct file *file, /* FIXME: These should be using the mode methods */ case TIOCMBIS: case TIOCMBIC: - case TIOCMSET: dbg("%s (%d) TIOCMSET/TIOCMBIC/TIOCMSET", __func__, port->number); return set_modem_info(mos7720_port, cmd, (unsigned int __user *)arg); - case TIOCMGET: - dbg("%s (%d) TIOCMGET", __func__, port->number); - return get_modem_info(mos7720_port, - (unsigned int __user *)arg); - case TIOCGSERIAL: dbg("%s (%d) TIOCGSERIAL", __func__, port->number); return get_serial_info(mos7720_port, @@ -1557,6 +1592,8 @@ static struct usb_serial_driver moschip7720_2port_driver = { .attach = mos7720_startup, .release = mos7720_release, .ioctl = mos7720_ioctl, + .tiocmget = mos7720_tiocmget, + .tiocmset = mos7720_tiocmset, .set_termios = mos7720_set_termios, .write = mos7720_write, .write_room = mos7720_write_room, diff --git a/drivers/usb/serial/mos7840.c b/drivers/usb/serial/mos7840.c index 270009afdf77..f11abf52be7d 100644 --- a/drivers/usb/serial/mos7840.c +++ b/drivers/usb/serial/mos7840.c @@ -824,8 +824,7 @@ static int mos7840_serial_probe(struct usb_serial *serial, * Otherwise we return a negative error number. *****************************************************************************/ -static int mos7840_open(struct tty_struct *tty, - struct usb_serial_port *port, struct file *filp) +static int mos7840_open(struct tty_struct *tty, struct usb_serial_port *port) { int response; int j; @@ -2134,106 +2133,6 @@ static int mos7840_get_lsr_info(struct tty_struct *tty, } /***************************************************************************** - * mos7840_set_modem_info - * function to set modem info - *****************************************************************************/ - -/* FIXME: Should be using the model control hooks */ - -static int mos7840_set_modem_info(struct moschip_port *mos7840_port, - unsigned int cmd, unsigned int __user *value) -{ - unsigned int mcr; - unsigned int arg; - __u16 Data; - int status; - struct usb_serial_port *port; - - if (mos7840_port == NULL) - return -1; - - port = (struct usb_serial_port *)mos7840_port->port; - if (mos7840_port_paranoia_check(port, __func__)) { - dbg("%s", "Invalid port"); - return -1; - } - - mcr = mos7840_port->shadowMCR; - - if (copy_from_user(&arg, value, sizeof(int))) - return -EFAULT; - - switch (cmd) { - case TIOCMBIS: - if (arg & TIOCM_RTS) - mcr |= MCR_RTS; - if (arg & TIOCM_DTR) - mcr |= MCR_RTS; - if (arg & TIOCM_LOOP) - mcr |= MCR_LOOPBACK; - break; - - case TIOCMBIC: - if (arg & TIOCM_RTS) - mcr &= ~MCR_RTS; - if (arg & TIOCM_DTR) - mcr &= ~MCR_RTS; - if (arg & TIOCM_LOOP) - mcr &= ~MCR_LOOPBACK; - break; - - case TIOCMSET: - /* turn off the RTS and DTR and LOOPBACK - * and then only turn on what was asked to */ - mcr &= ~(MCR_RTS | MCR_DTR | MCR_LOOPBACK); - mcr |= ((arg & TIOCM_RTS) ? MCR_RTS : 0); - mcr |= ((arg & TIOCM_DTR) ? MCR_DTR : 0); - mcr |= ((arg & TIOCM_LOOP) ? MCR_LOOPBACK : 0); - break; - } - - lock_kernel(); - mos7840_port->shadowMCR = mcr; - - Data = mos7840_port->shadowMCR; - status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, Data); - unlock_kernel(); - if (status < 0) { - dbg("setting MODEM_CONTROL_REGISTER Failed"); - return -1; - } - - return 0; -} - -/***************************************************************************** - * mos7840_get_modem_info - * function to get modem info - *****************************************************************************/ - -static int mos7840_get_modem_info(struct moschip_port *mos7840_port, - unsigned int __user *value) -{ - unsigned int result = 0; - __u16 msr; - unsigned int mcr = mos7840_port->shadowMCR; - mos7840_get_uart_reg(mos7840_port->port, - MODEM_STATUS_REGISTER, &msr); - result = ((mcr & MCR_DTR) ? TIOCM_DTR : 0) /* 0x002 */ - |((mcr & MCR_RTS) ? TIOCM_RTS : 0) /* 0x004 */ - |((msr & MOS7840_MSR_CTS) ? TIOCM_CTS : 0) /* 0x020 */ - |((msr & MOS7840_MSR_CD) ? TIOCM_CAR : 0) /* 0x040 */ - |((msr & MOS7840_MSR_RI) ? TIOCM_RI : 0) /* 0x080 */ - |((msr & MOS7840_MSR_DSR) ? TIOCM_DSR : 0); /* 0x100 */ - - dbg("%s -- %x", __func__, result); - - if (copy_to_user(value, &result, sizeof(int))) - return -EFAULT; - return 0; -} - -/***************************************************************************** * mos7840_get_serial_info * function to get information about serial port *****************************************************************************/ @@ -2281,7 +2180,6 @@ static int mos7840_ioctl(struct tty_struct *tty, struct file *file, struct async_icount cnow; struct async_icount cprev; struct serial_icounter_struct icount; - int mosret = 0; if (mos7840_port_paranoia_check(port, __func__)) { dbg("%s", "Invalid port"); @@ -2303,20 +2201,6 @@ static int mos7840_ioctl(struct tty_struct *tty, struct file *file, return mos7840_get_lsr_info(tty, argp); return 0; - /* FIXME: use the modem hooks and remove this */ - case TIOCMBIS: - case TIOCMBIC: - case TIOCMSET: - dbg("%s (%d) TIOCMSET/TIOCMBIC/TIOCMSET", __func__, - port->number); - mosret = - mos7840_set_modem_info(mos7840_port, cmd, argp); - return mosret; - - case TIOCMGET: - dbg("%s (%d) TIOCMGET", __func__, port->number); - return mos7840_get_modem_info(mos7840_port, argp); - case TIOCGSERIAL: dbg("%s (%d) TIOCGSERIAL", __func__, port->number); return mos7840_get_serial_info(mos7840_port, argp); diff --git a/drivers/usb/serial/navman.c b/drivers/usb/serial/navman.c index f5f3751a888c..5ceaa4c6be09 100644 --- a/drivers/usb/serial/navman.c +++ b/drivers/usb/serial/navman.c @@ -80,8 +80,7 @@ exit: __func__, result); } -static int navman_open(struct tty_struct *tty, - struct usb_serial_port *port, struct file *filp) +static int navman_open(struct tty_struct *tty, struct usb_serial_port *port) { int result = 0; diff --git a/drivers/usb/serial/omninet.c b/drivers/usb/serial/omninet.c index 56857ddbd70b..062265038bf0 100644 --- a/drivers/usb/serial/omninet.c +++ b/drivers/usb/serial/omninet.c @@ -64,8 +64,7 @@ static int debug; #define BT_IGNITIONPRO_ID 0x2000 /* function prototypes */ -static int omninet_open(struct tty_struct *tty, struct usb_serial_port *port, - struct file *filp); +static int omninet_open(struct tty_struct *tty, struct usb_serial_port *port); static void omninet_close(struct usb_serial_port *port); static void omninet_read_bulk_callback(struct urb *urb); static void omninet_write_bulk_callback(struct urb *urb); @@ -163,8 +162,7 @@ static int omninet_attach(struct usb_serial *serial) return 0; } -static int omninet_open(struct tty_struct *tty, - struct usb_serial_port *port, struct file *filp) +static int omninet_open(struct tty_struct *tty, struct usb_serial_port *port) { struct usb_serial *serial = port->serial; struct usb_serial_port *wport; diff --git a/drivers/usb/serial/opticon.c b/drivers/usb/serial/opticon.c index 336bba79ad32..1085a577c5c1 100644 --- a/drivers/usb/serial/opticon.c +++ b/drivers/usb/serial/opticon.c @@ -144,8 +144,7 @@ exit: spin_unlock(&priv->lock); } -static int opticon_open(struct tty_struct *tty, struct usb_serial_port *port, - struct file *filp) +static int opticon_open(struct tty_struct *tty, struct usb_serial_port *port) { struct opticon_private *priv = usb_get_serial_data(port->serial); unsigned long flags; diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c index c784ddbe7b61..fe47051dbef2 100644 --- a/drivers/usb/serial/option.c +++ b/drivers/usb/serial/option.c @@ -45,8 +45,7 @@ /* Function prototypes */ static int option_probe(struct usb_serial *serial, const struct usb_device_id *id); -static int option_open(struct tty_struct *tty, struct usb_serial_port *port, - struct file *filp); +static int option_open(struct tty_struct *tty, struct usb_serial_port *port); static void option_close(struct usb_serial_port *port); static void option_dtr_rts(struct usb_serial_port *port, int on); @@ -961,8 +960,7 @@ static int option_chars_in_buffer(struct tty_struct *tty) return data_len; } -static int option_open(struct tty_struct *tty, - struct usb_serial_port *port, struct file *filp) +static int option_open(struct tty_struct *tty, struct usb_serial_port *port) { struct option_port_private *portdata; int i, err; diff --git a/drivers/usb/serial/oti6858.c b/drivers/usb/serial/oti6858.c index 3cece27325e7..0f4a70ce3823 100644 --- a/drivers/usb/serial/oti6858.c +++ b/drivers/usb/serial/oti6858.c @@ -141,11 +141,11 @@ struct oti6858_control_pkt { && ((a)->frame_fmt == (priv)->pending_setup.frame_fmt)) /* function prototypes */ -static int oti6858_open(struct tty_struct *tty, - struct usb_serial_port *port, struct file *filp); +static int oti6858_open(struct tty_struct *tty, struct usb_serial_port *port); static void oti6858_close(struct usb_serial_port *port); static void oti6858_set_termios(struct tty_struct *tty, struct usb_serial_port *port, struct ktermios *old); +static void oti6858_init_termios(struct tty_struct *tty); static int oti6858_ioctl(struct tty_struct *tty, struct file *file, unsigned int cmd, unsigned long arg); static void oti6858_read_int_callback(struct urb *urb); @@ -186,6 +186,7 @@ static struct usb_serial_driver oti6858_device = { .write = oti6858_write, .ioctl = oti6858_ioctl, .set_termios = oti6858_set_termios, + .init_termios = oti6858_init_termios, .tiocmget = oti6858_tiocmget, .tiocmset = oti6858_tiocmset, .read_bulk_callback = oti6858_read_bulk_callback, @@ -206,7 +207,6 @@ struct oti6858_private { struct { u8 read_urb_in_use; u8 write_urb_in_use; - u8 termios_initialized; } flags; struct delayed_work delayed_write_work; @@ -447,6 +447,14 @@ static int oti6858_chars_in_buffer(struct tty_struct *tty) return chars; } +static void oti6858_init_termios(struct tty_struct *tty) +{ + *(tty->termios) = tty_std_termios; + tty->termios->c_cflag = B38400 | CS8 | CREAD | HUPCL | CLOCAL; + tty->termios->c_ispeed = 38400; + tty->termios->c_ospeed = 38400; +} + static void oti6858_set_termios(struct tty_struct *tty, struct usb_serial_port *port, struct ktermios *old_termios) { @@ -464,16 +472,6 @@ static void oti6858_set_termios(struct tty_struct *tty, return; } - spin_lock_irqsave(&priv->lock, flags); - if (!priv->flags.termios_initialized) { - *(tty->termios) = tty_std_termios; - tty->termios->c_cflag = B38400 | CS8 | CREAD | HUPCL | CLOCAL; - tty->termios->c_ispeed = 38400; - tty->termios->c_ospeed = 38400; - priv->flags.termios_initialized = 1; - } - spin_unlock_irqrestore(&priv->lock, flags); - cflag = tty->termios->c_cflag; spin_lock_irqsave(&priv->lock, flags); @@ -566,8 +564,7 @@ static void oti6858_set_termios(struct tty_struct *tty, spin_unlock_irqrestore(&priv->lock, flags); } -static int oti6858_open(struct tty_struct *tty, - struct usb_serial_port *port, struct file *filp) +static int oti6858_open(struct tty_struct *tty, struct usb_serial_port *port) { struct oti6858_private *priv = usb_get_serial_port_data(port); struct ktermios tmp_termios; diff --git a/drivers/usb/serial/pl2303.c b/drivers/usb/serial/pl2303.c index 3e86815b2705..a63ea99936f7 100644 --- a/drivers/usb/serial/pl2303.c +++ b/drivers/usb/serial/pl2303.c @@ -691,8 +691,7 @@ static void pl2303_close(struct usb_serial_port *port) } -static int pl2303_open(struct tty_struct *tty, - struct usb_serial_port *port, struct file *filp) +static int pl2303_open(struct tty_struct *tty, struct usb_serial_port *port) { struct ktermios tmp_termios; struct usb_serial *serial = port->serial; @@ -714,8 +713,6 @@ static int pl2303_open(struct tty_struct *tty, if (tty) pl2303_set_termios(tty, port, &tmp_termios); - /* FIXME: need to assert RTS and DTR if CRTSCTS off */ - dbg("%s - submitting read urb", __func__); port->read_urb->dev = serial->dev; result = usb_submit_urb(port->read_urb, GFP_KERNEL); diff --git a/drivers/usb/serial/sierra.c b/drivers/usb/serial/sierra.c index f48d05e0acc1..55391bbe1230 100644 --- a/drivers/usb/serial/sierra.c +++ b/drivers/usb/serial/sierra.c @@ -734,8 +734,7 @@ static void sierra_close(struct usb_serial_port *port) } } -static int sierra_open(struct tty_struct *tty, - struct usb_serial_port *port, struct file *filp) +static int sierra_open(struct tty_struct *tty, struct usb_serial_port *port) { struct sierra_port_private *portdata; struct usb_serial *serial = port->serial; diff --git a/drivers/usb/serial/spcp8x5.c b/drivers/usb/serial/spcp8x5.c index 3c249d8e8b8e..61e7c40b94fb 100644 --- a/drivers/usb/serial/spcp8x5.c +++ b/drivers/usb/serial/spcp8x5.c @@ -299,7 +299,6 @@ struct spcp8x5_private { wait_queue_head_t delta_msr_wait; u8 line_control; u8 line_status; - u8 termios_initialized; }; /* desc : when device plug in,this function would be called. @@ -498,6 +497,15 @@ static void spcp8x5_close(struct usb_serial_port *port) dev_dbg(&port->dev, "usb_unlink_urb(read_urb) = %d\n", result); } +static void spcp8x5_init_termios(struct tty_struct *tty) +{ + /* for the 1st time call this function */ + *(tty->termios) = tty_std_termios; + tty->termios->c_cflag = B115200 | CS8 | CREAD | HUPCL | CLOCAL; + tty->termios->c_ispeed = 115200; + tty->termios->c_ospeed = 115200; +} + /* set the serial param for transfer. we should check if we really need to * transfer. if we set flow control we should do this too. */ static void spcp8x5_set_termios(struct tty_struct *tty, @@ -514,16 +522,6 @@ static void spcp8x5_set_termios(struct tty_struct *tty, int i; u8 control; - /* for the 1st time call this function */ - spin_lock_irqsave(&priv->lock, flags); - if (!priv->termios_initialized) { - *(tty->termios) = tty_std_termios; - tty->termios->c_cflag = B115200 | CS8 | CREAD | HUPCL | CLOCAL; - tty->termios->c_ispeed = 115200; - tty->termios->c_ospeed = 115200; - priv->termios_initialized = 1; - } - spin_unlock_irqrestore(&priv->lock, flags); /* check that they really want us to change something */ if (!tty_termios_hw_change(tty->termios, old_termios)) @@ -623,8 +621,7 @@ static void spcp8x5_set_termios(struct tty_struct *tty, /* open the serial port. do some usb system call. set termios and get the line * status of the device. then submit the read urb */ -static int spcp8x5_open(struct tty_struct *tty, - struct usb_serial_port *port, struct file *filp) +static int spcp8x5_open(struct tty_struct *tty, struct usb_serial_port *port) { struct ktermios tmp_termios; struct usb_serial *serial = port->serial; @@ -658,8 +655,6 @@ static int spcp8x5_open(struct tty_struct *tty, priv->line_status = status & 0xf0 ; spin_unlock_irqrestore(&priv->lock, flags); - /* FIXME: need to assert RTS and DTR if CRTSCTS off */ - dbg("%s - submitting read urb", __func__); port->read_urb->dev = serial->dev; ret = usb_submit_urb(port->read_urb, GFP_KERNEL); @@ -1011,6 +1006,7 @@ static struct usb_serial_driver spcp8x5_device = { .carrier_raised = spcp8x5_carrier_raised, .write = spcp8x5_write, .set_termios = spcp8x5_set_termios, + .init_termios = spcp8x5_init_termios, .ioctl = spcp8x5_ioctl, .tiocmget = spcp8x5_tiocmget, .tiocmset = spcp8x5_tiocmset, diff --git a/drivers/usb/serial/symbolserial.c b/drivers/usb/serial/symbolserial.c index 6157fac9366b..cb7e95f9fcbf 100644 --- a/drivers/usb/serial/symbolserial.c +++ b/drivers/usb/serial/symbolserial.c @@ -124,8 +124,7 @@ exit: spin_unlock(&priv->lock); } -static int symbol_open(struct tty_struct *tty, struct usb_serial_port *port, - struct file *filp) +static int symbol_open(struct tty_struct *tty, struct usb_serial_port *port) { struct symbol_private *priv = usb_get_serial_data(port->serial); unsigned long flags; diff --git a/drivers/usb/serial/ti_usb_3410_5052.c b/drivers/usb/serial/ti_usb_3410_5052.c index 3bc609fe2242..1e9dc8821698 100644 --- a/drivers/usb/serial/ti_usb_3410_5052.c +++ b/drivers/usb/serial/ti_usb_3410_5052.c @@ -98,8 +98,7 @@ struct ti_device { static int ti_startup(struct usb_serial *serial); static void ti_release(struct usb_serial *serial); -static int ti_open(struct tty_struct *tty, struct usb_serial_port *port, - struct file *file); +static int ti_open(struct tty_struct *tty, struct usb_serial_port *port); static void ti_close(struct usb_serial_port *port); static int ti_write(struct tty_struct *tty, struct usb_serial_port *port, const unsigned char *data, int count); @@ -492,8 +491,7 @@ static void ti_release(struct usb_serial *serial) } -static int ti_open(struct tty_struct *tty, - struct usb_serial_port *port, struct file *file) +static int ti_open(struct tty_struct *tty, struct usb_serial_port *port) { struct ti_port *tport = usb_get_serial_port_data(port); struct ti_device *tdev; diff --git a/drivers/usb/serial/usb-serial.c b/drivers/usb/serial/usb-serial.c index 99188c92068b..9d7ca4868d37 100644 --- a/drivers/usb/serial/usb-serial.c +++ b/drivers/usb/serial/usb-serial.c @@ -43,8 +43,6 @@ #define DRIVER_AUTHOR "Greg Kroah-Hartman, greg@kroah.com, http://www.kroah.com/linux/" #define DRIVER_DESC "USB Serial Driver core" -static void port_free(struct usb_serial_port *port); - /* Driver structure we register with the USB core */ static struct usb_driver usb_serial_driver = { .name = "usbserial", @@ -68,6 +66,11 @@ static struct usb_serial *serial_table[SERIAL_TTY_MINORS]; static DEFINE_MUTEX(table_lock); static LIST_HEAD(usb_serial_driver_list); +/* + * Look up the serial structure. If it is found and it hasn't been + * disconnected, return with its disc_mutex held and its refcount + * incremented. Otherwise return NULL. + */ struct usb_serial *usb_serial_get_by_index(unsigned index) { struct usb_serial *serial; @@ -75,8 +78,15 @@ struct usb_serial *usb_serial_get_by_index(unsigned index) mutex_lock(&table_lock); serial = serial_table[index]; - if (serial) - kref_get(&serial->kref); + if (serial) { + mutex_lock(&serial->disc_mutex); + if (serial->disconnected) { + mutex_unlock(&serial->disc_mutex); + serial = NULL; + } else { + kref_get(&serial->kref); + } + } mutex_unlock(&table_lock); return serial; } @@ -125,8 +135,10 @@ static void return_serial(struct usb_serial *serial) dbg("%s", __func__); + mutex_lock(&table_lock); for (i = 0; i < serial->num_ports; ++i) serial_table[serial->minor + i] = NULL; + mutex_unlock(&table_lock); } static void destroy_serial(struct kref *kref) @@ -145,161 +157,157 @@ static void destroy_serial(struct kref *kref) serial->type->release(serial); - for (i = 0; i < serial->num_ports; ++i) { + /* Now that nothing is using the ports, they can be freed */ + for (i = 0; i < serial->num_port_pointers; ++i) { port = serial->port[i]; - if (port) + if (port) { + port->serial = NULL; put_device(&port->dev); - } - - /* If this is a "fake" port, we have to clean it up here, as it will - * not get cleaned up in port_release() as it was never registered with - * the driver core */ - if (serial->num_ports < serial->num_port_pointers) { - for (i = serial->num_ports; - i < serial->num_port_pointers; ++i) { - port = serial->port[i]; - if (port) - port_free(port); } } usb_put_dev(serial->dev); - - /* free up any memory that we allocated */ kfree(serial); } void usb_serial_put(struct usb_serial *serial) { - mutex_lock(&table_lock); kref_put(&serial->kref, destroy_serial); - mutex_unlock(&table_lock); } /***************************************************************************** * Driver tty interface functions *****************************************************************************/ -static int serial_open (struct tty_struct *tty, struct file *filp) + +/** + * serial_install - install tty + * @driver: the driver (USB in our case) + * @tty: the tty being created + * + * Create the termios objects for this tty. We use the default + * USB serial settings but permit them to be overridden by + * serial->type->init_termios. + * + * This is the first place a new tty gets used. Hence this is where we + * acquire references to the usb_serial structure and the driver module, + * where we store a pointer to the port, and where we do an autoresume. + * All these actions are reversed in serial_release(). + */ +static int serial_install(struct tty_driver *driver, struct tty_struct *tty) { + int idx = tty->index; struct usb_serial *serial; struct usb_serial_port *port; - unsigned int portNumber; - int retval = 0; - int first = 0; + int retval = -ENODEV; dbg("%s", __func__); - /* get the serial object associated with this tty pointer */ - serial = usb_serial_get_by_index(tty->index); - if (!serial) { - tty->driver_data = NULL; - return -ENODEV; - } + serial = usb_serial_get_by_index(idx); + if (!serial) + return retval; - mutex_lock(&serial->disc_mutex); - portNumber = tty->index - serial->minor; - port = serial->port[portNumber]; - if (!port || serial->disconnected) - retval = -ENODEV; - else - get_device(&port->dev); - /* - * Note: Our locking order requirement does not allow port->mutex - * to be acquired while serial->disc_mutex is held. - */ - mutex_unlock(&serial->disc_mutex); + port = serial->port[idx - serial->minor]; + if (!port) + goto error_no_port; + if (!try_module_get(serial->type->driver.owner)) + goto error_module_get; + + /* perform the standard setup */ + retval = tty_init_termios(tty); if (retval) - goto bailout_serial_put; + goto error_init_termios; - if (mutex_lock_interruptible(&port->mutex)) { - retval = -ERESTARTSYS; - goto bailout_port_put; - } + retval = usb_autopm_get_interface(serial->interface); + if (retval) + goto error_get_interface; + + mutex_unlock(&serial->disc_mutex); - ++port->port.count; + /* allow the driver to update the settings */ + if (serial->type->init_termios) + serial->type->init_termios(tty); - /* set up our port structure making the tty driver - * remember our port object, and us it */ tty->driver_data = port; - tty_port_tty_set(&port->port, tty); - /* If the console is attached, the device is already open */ - if (port->port.count == 1 && !port->console) { - first = 1; - /* lock this module before we call it - * this may fail, which means we must bail out, - * safe because we are called with BKL held */ - if (!try_module_get(serial->type->driver.owner)) { - retval = -ENODEV; - goto bailout_mutex_unlock; - } + /* Final install (we use the default method) */ + tty_driver_kref_get(driver); + tty->count++; + driver->ttys[idx] = tty; + return retval; + error_get_interface: + error_init_termios: + module_put(serial->type->driver.owner); + error_module_get: + error_no_port: + usb_serial_put(serial); + mutex_unlock(&serial->disc_mutex); + return retval; +} + +static int serial_open(struct tty_struct *tty, struct file *filp) +{ + struct usb_serial_port *port = tty->driver_data; + struct usb_serial *serial = port->serial; + int retval; + + dbg("%s - port %d", __func__, port->number); + + spin_lock_irq(&port->port.lock); + if (!tty_hung_up_p(filp)) + ++port->port.count; + spin_unlock_irq(&port->port.lock); + tty_port_tty_set(&port->port, tty); + + /* Do the device-specific open only if the hardware isn't + * already initialized. + */ + if (!test_bit(ASYNCB_INITIALIZED, &port->port.flags)) { + if (mutex_lock_interruptible(&port->mutex)) + return -ERESTARTSYS; mutex_lock(&serial->disc_mutex); if (serial->disconnected) retval = -ENODEV; else - retval = usb_autopm_get_interface(serial->interface); - if (retval) - goto bailout_module_put; - - /* only call the device specific open if this - * is the first time the port is opened */ - retval = serial->type->open(tty, port, filp); - if (retval) - goto bailout_interface_put; + retval = port->serial->type->open(tty, port); mutex_unlock(&serial->disc_mutex); + mutex_unlock(&port->mutex); + if (retval) + return retval; set_bit(ASYNCB_INITIALIZED, &port->port.flags); } - mutex_unlock(&port->mutex); + /* Now do the correct tty layer semantics */ retval = tty_port_block_til_ready(&port->port, tty, filp); - if (retval == 0) { - if (!first) - usb_serial_put(serial); - return 0; - } - mutex_lock(&port->mutex); - if (first == 0) - goto bailout_mutex_unlock; - /* Undo the initial port actions */ - mutex_lock(&serial->disc_mutex); -bailout_interface_put: - usb_autopm_put_interface(serial->interface); -bailout_module_put: - mutex_unlock(&serial->disc_mutex); - module_put(serial->type->driver.owner); -bailout_mutex_unlock: - port->port.count = 0; - tty->driver_data = NULL; - tty_port_tty_set(&port->port, NULL); - mutex_unlock(&port->mutex); -bailout_port_put: - put_device(&port->dev); -bailout_serial_put: - usb_serial_put(serial); return retval; } /** - * serial_do_down - shut down hardware - * @port: port to shut down - * - * Shut down a USB port unless it is the console. We never shut down the - * console hardware as it will always be in use. + * serial_down - shut down hardware + * @port: port to shut down * - * Don't free any resources at this point + * Shut down a USB serial port unless it is the console. We never + * shut down the console hardware as it will always be in use. */ -static void serial_do_down(struct usb_serial_port *port) +static void serial_down(struct usb_serial_port *port) { struct usb_serial_driver *drv = port->serial->type; struct usb_serial *serial; struct module *owner; - /* The console is magical, do not hang up the console hardware - or there will be tears */ + /* + * The console is magical. Do not hang up the console hardware + * or there will be tears. + */ if (port->console) return; + /* Don't call the close method if the hardware hasn't been + * initialized. + */ + if (!test_and_clear_bit(ASYNCB_INITIALIZED, &port->port.flags)) + return; + mutex_lock(&port->mutex); serial = port->serial; owner = serial->type->driver.owner; @@ -310,79 +318,69 @@ static void serial_do_down(struct usb_serial_port *port) mutex_unlock(&port->mutex); } -/** - * serial_do_free - free resources post close/hangup - * @port: port to free up - * - * Do the resource freeing and refcount dropping for the port. We must - * be careful about ordering and we must avoid freeing up the console. - */ - -static void serial_do_free(struct usb_serial_port *port) +static void serial_hangup(struct tty_struct *tty) { - struct usb_serial *serial; - struct module *owner; + struct usb_serial_port *port = tty->driver_data; - /* The console is magical, do not hang up the console hardware - or there will be tears */ - if (port->console) - return; + dbg("%s - port %d", __func__, port->number); - serial = port->serial; - owner = serial->type->driver.owner; - put_device(&port->dev); - /* Mustn't dereference port any more */ - mutex_lock(&serial->disc_mutex); - if (!serial->disconnected) - usb_autopm_put_interface(serial->interface); - mutex_unlock(&serial->disc_mutex); - usb_serial_put(serial); - /* Mustn't dereference serial any more */ - module_put(owner); + serial_down(port); + tty_port_hangup(&port->port); } static void serial_close(struct tty_struct *tty, struct file *filp) { struct usb_serial_port *port = tty->driver_data; - if (!port) - return; - dbg("%s - port %d", __func__, port->number); - /* FIXME: - This leaves a very narrow race. Really we should do the - serial_do_free() on tty->shutdown(), but tty->shutdown can - be called from IRQ context and serial_do_free can sleep. - - The right fix is probably to make the tty free (which is rare) - and thus tty->shutdown() occur via a work queue and simplify all - the drivers that use it. - */ - if (tty_hung_up_p(filp)) { - /* serial_hangup already called serial_down at this point. - Another user may have already reopened the port but - serial_do_free is refcounted */ - serial_do_free(port); + if (tty_hung_up_p(filp)) return; - } - if (tty_port_close_start(&port->port, tty, filp) == 0) return; - - serial_do_down(port); + serial_down(port); tty_port_close_end(&port->port, tty); tty_port_tty_set(&port->port, NULL); - serial_do_free(port); } -static void serial_hangup(struct tty_struct *tty) +/** + * serial_release - free resources post close/hangup + * @port: port to free up + * + * Do the resource freeing and refcount dropping for the port. + * Avoid freeing the console. + * + * Called when the last tty kref is dropped. + */ +static void serial_release(struct tty_struct *tty) { struct usb_serial_port *port = tty->driver_data; - serial_do_down(port); - tty_port_hangup(&port->port); - /* We must not free port yet - the USB serial layer depends on it's - continued existence */ + struct usb_serial *serial; + struct module *owner; + + /* The console is magical. Do not hang up the console hardware + * or there will be tears. + */ + if (port->console) + return; + + dbg("%s - port %d", __func__, port->number); + + /* Standard shutdown processing */ + tty_shutdown(tty); + + tty->driver_data = NULL; + + serial = port->serial; + owner = serial->type->driver.owner; + + mutex_lock(&serial->disc_mutex); + if (!serial->disconnected) + usb_autopm_put_interface(serial->interface); + mutex_unlock(&serial->disc_mutex); + + usb_serial_put(serial); + module_put(owner); } static int serial_write(struct tty_struct *tty, const unsigned char *buf, @@ -527,6 +525,7 @@ static int serial_proc_show(struct seq_file *m, void *v) seq_putc(m, '\n'); usb_serial_put(serial); + mutex_unlock(&serial->disc_mutex); } return 0; } @@ -596,14 +595,6 @@ static void usb_serial_port_work(struct work_struct *work) tty_kref_put(tty); } -static void port_release(struct device *dev) -{ - struct usb_serial_port *port = to_usb_serial_port(dev); - - dbg ("%s - %s", __func__, dev_name(dev)); - port_free(port); -} - static void kill_traffic(struct usb_serial_port *port) { usb_kill_urb(port->read_urb); @@ -623,8 +614,12 @@ static void kill_traffic(struct usb_serial_port *port) usb_kill_urb(port->interrupt_out_urb); } -static void port_free(struct usb_serial_port *port) +static void port_release(struct device *dev) { + struct usb_serial_port *port = to_usb_serial_port(dev); + + dbg ("%s - %s", __func__, dev_name(dev)); + /* * Stop all the traffic before cancelling the work, so that * nobody will restart it by calling usb_serial_port_softint. @@ -935,6 +930,11 @@ int usb_serial_probe(struct usb_interface *interface, mutex_init(&port->mutex); INIT_WORK(&port->work, usb_serial_port_work); serial->port[i] = port; + port->dev.parent = &interface->dev; + port->dev.driver = NULL; + port->dev.bus = &usb_serial_bus_type; + port->dev.release = &port_release; + device_initialize(&port->dev); } /* set up the endpoint information */ @@ -1077,15 +1077,10 @@ int usb_serial_probe(struct usb_interface *interface, /* register all of the individual ports with the driver core */ for (i = 0; i < num_ports; ++i) { port = serial->port[i]; - port->dev.parent = &interface->dev; - port->dev.driver = NULL; - port->dev.bus = &usb_serial_bus_type; - port->dev.release = &port_release; - dev_set_name(&port->dev, "ttyUSB%d", port->number); dbg ("%s - registering %s", __func__, dev_name(&port->dev)); port->dev_state = PORT_REGISTERING; - retval = device_register(&port->dev); + retval = device_add(&port->dev); if (retval) { dev_err(&port->dev, "Error registering port device, " "continuing\n"); @@ -1103,39 +1098,7 @@ exit: return 0; probe_error: - for (i = 0; i < num_bulk_in; ++i) { - port = serial->port[i]; - if (!port) - continue; - usb_free_urb(port->read_urb); - kfree(port->bulk_in_buffer); - } - for (i = 0; i < num_bulk_out; ++i) { - port = serial->port[i]; - if (!port) - continue; - usb_free_urb(port->write_urb); - kfree(port->bulk_out_buffer); - } - for (i = 0; i < num_interrupt_in; ++i) { - port = serial->port[i]; - if (!port) - continue; - usb_free_urb(port->interrupt_in_urb); - kfree(port->interrupt_in_buffer); - } - for (i = 0; i < num_interrupt_out; ++i) { - port = serial->port[i]; - if (!port) - continue; - usb_free_urb(port->interrupt_out_urb); - kfree(port->interrupt_out_buffer); - } - - /* free up any memory that we allocated */ - for (i = 0; i < serial->num_port_pointers; ++i) - kfree(serial->port[i]); - kfree(serial); + usb_serial_put(serial); return -EIO; } EXPORT_SYMBOL_GPL(usb_serial_probe); @@ -1161,10 +1124,7 @@ void usb_serial_disconnect(struct usb_interface *interface) if (port) { struct tty_struct *tty = tty_port_tty_get(&port->port); if (tty) { - /* The hangup will occur asynchronously but - the object refcounts will sort out all the - cleanup */ - tty_hangup(tty); + tty_vhangup(tty); tty_kref_put(tty); } kill_traffic(port); @@ -1189,8 +1149,7 @@ void usb_serial_disconnect(struct usb_interface *interface) } serial->type->disconnect(serial); - /* let the last holder of this object - * cause it to be cleaned up */ + /* let the last holder of this object cause it to be cleaned up */ usb_serial_put(serial); dev_info(dev, "device disconnected\n"); } @@ -1246,6 +1205,8 @@ static const struct tty_operations serial_ops = { .chars_in_buffer = serial_chars_in_buffer, .tiocmget = serial_tiocmget, .tiocmset = serial_tiocmset, + .shutdown = serial_release, + .install = serial_install, .proc_fops = &serial_proc_fops, }; diff --git a/drivers/usb/serial/usb_debug.c b/drivers/usb/serial/usb_debug.c index 614800972dc3..7b5bfc4edd3d 100644 --- a/drivers/usb/serial/usb_debug.c +++ b/drivers/usb/serial/usb_debug.c @@ -43,11 +43,10 @@ static struct usb_driver debug_driver = { .no_dynamic_id = 1, }; -static int usb_debug_open(struct tty_struct *tty, struct usb_serial_port *port, - struct file *filp) +static int usb_debug_open(struct tty_struct *tty, struct usb_serial_port *port) { port->bulk_out_size = USB_DEBUG_MAX_PACKET_SIZE; - return usb_serial_generic_open(tty, port, filp); + return usb_serial_generic_open(tty, port); } /* This HW really does not support a serial break, so one will be diff --git a/drivers/usb/serial/visor.c b/drivers/usb/serial/visor.c index f5d0f64dcc52..1aa5d20a5d99 100644 --- a/drivers/usb/serial/visor.c +++ b/drivers/usb/serial/visor.c @@ -36,8 +36,7 @@ #define DRIVER_DESC "USB HandSpring Visor / Palm OS driver" /* function prototypes for a handspring visor */ -static int visor_open(struct tty_struct *tty, struct usb_serial_port *port, - struct file *filp); +static int visor_open(struct tty_struct *tty, struct usb_serial_port *port); static void visor_close(struct usb_serial_port *port); static int visor_write(struct tty_struct *tty, struct usb_serial_port *port, const unsigned char *buf, int count); @@ -273,8 +272,7 @@ static int stats; /****************************************************************************** * Handspring Visor specific driver functions ******************************************************************************/ -static int visor_open(struct tty_struct *tty, struct usb_serial_port *port, - struct file *filp) +static int visor_open(struct tty_struct *tty, struct usb_serial_port *port) { struct usb_serial *serial = port->serial; struct visor_private *priv = usb_get_serial_port_data(port); diff --git a/drivers/usb/serial/whiteheat.c b/drivers/usb/serial/whiteheat.c index 8d126dd7a02e..62424eec33ec 100644 --- a/drivers/usb/serial/whiteheat.c +++ b/drivers/usb/serial/whiteheat.c @@ -146,7 +146,7 @@ static int whiteheat_firmware_attach(struct usb_serial *serial); static int whiteheat_attach(struct usb_serial *serial); static void whiteheat_release(struct usb_serial *serial); static int whiteheat_open(struct tty_struct *tty, - struct usb_serial_port *port, struct file *filp); + struct usb_serial_port *port); static void whiteheat_close(struct usb_serial_port *port); static int whiteheat_write(struct tty_struct *tty, struct usb_serial_port *port, @@ -259,7 +259,7 @@ static int firm_send_command(struct usb_serial_port *port, __u8 command, __u8 *data, __u8 datasize); static int firm_open(struct usb_serial_port *port); static int firm_close(struct usb_serial_port *port); -static int firm_setup_port(struct tty_struct *tty); +static void firm_setup_port(struct tty_struct *tty); static int firm_set_rts(struct usb_serial_port *port, __u8 onoff); static int firm_set_dtr(struct usb_serial_port *port, __u8 onoff); static int firm_set_break(struct usb_serial_port *port, __u8 onoff); @@ -659,8 +659,7 @@ static void whiteheat_release(struct usb_serial *serial) return; } -static int whiteheat_open(struct tty_struct *tty, - struct usb_serial_port *port, struct file *filp) +static int whiteheat_open(struct tty_struct *tty, struct usb_serial_port *port) { int retval = 0; @@ -1211,7 +1210,7 @@ static int firm_close(struct usb_serial_port *port) } -static int firm_setup_port(struct tty_struct *tty) +static void firm_setup_port(struct tty_struct *tty) { struct usb_serial_port *port = tty->driver_data; struct whiteheat_port_settings port_settings; @@ -1286,7 +1285,7 @@ static int firm_setup_port(struct tty_struct *tty) port_settings.lloop = 0; /* now send the message to the device */ - return firm_send_command(port, WHITEHEAT_SETUP_PORT, + firm_send_command(port, WHITEHEAT_SETUP_PORT, (__u8 *)&port_settings, sizeof(port_settings)); } |