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path: root/drivers/net/wireless/rt2x00/rt2x00usb.h
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2010-12-13rt2x00: Add "flush" queue commandIvo van Doorn1-2/+2
Add a new command to the queue handlers: "flush", this moves the flush() callback from mac80211 into rt2x00queue and adds support for flushing the RX queue as well. Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com> Acked-by: Helmut Schaa <helmut.schaa@googlemail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-12-13rt2x00: Reorganize queue callback functionsIvo van Doorn1-2/+2
As part of the queue refactoring, change the queue callback function names to have 3 different actions: start, kick & stop. We can now also remove the STATE_RADIO_RX_ON/STATE_RADIO_RX_OFF device_state flags, and replace the usage with using the start_queue/stop_queue callback functions. This streamlines the RX queue handling to the similar approach as all other queues. Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com> Acked-by: Helmut Schaa <helmut.schaa@googlemail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-12-13rt2x00: Introduce 3 queue commands in drivers (start, kick, stop).Ivo van Doorn1-4/+4
As part of the queue refactoring, we now introduce 3 queue commands: start, kick, stop. - Start: will enable a queue, for TX this will not mean anything, while for beacons and RX this will update the registers to enable the queue. - Kick: This will kick all pending frames to the hardware. This is needed for the TX queue to push all frames to the HW after the queue has been started - Stop: This will stop the queue in the hardware, and cancel any pending work (So this doesn't mean the queue is empty after a stop!). Move all code from the drivers into the appropriate functions, and link those calls to the old rt2x00lib callback functions (we will fix this later when we refactor the queue control inside rt2x00lib). Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com> Acked-by: Helmut Schaa <helmut.schaa@googlemail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-08-25rt2x00: Simplify arguments to rt2x00 driver callback functionsIvo van Doorn1-8/+4
write_tx_desc shouldn't pass a rt2x00dev and skb pointer, instead it should use the same format as other TX frame callback functions, which is passing the data_entry pointer which contains all the information which is needed to work on a TX frame. Most callers of the kick_tx_queue and kill_tx_queue already have the data_queue pointer, so rather then sending the QID with the given function, when the driver requests a new pointer to the data_queue, it is more efficient to just send the data_queue pointer directly. Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com> Acked-by: Gertjan van Wingerde <gwingerde@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-07-13rt2x00: Implement watchdog monitoringIvo van Doorn1-0/+10
Implement watchdog monitoring for USB devices (PCI support can be added later). This will determine if URBs being uploaded to the hardware are actually returning. Both rt2500usb and rt2800usb have shown that URBs being uploaded can remain hanging without being released by the hardware. By using this watchdog, a queue can be reset when this occurs. For rt2800usb it has been tested that the connection is preserved even though this interruption. Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-06-30rt2x00: Merge PCI and USB versions of write_tx_data into single function.Gertjan van Wingerde1-10/+0
Now that rt2x00pci_write_tx_data and rt2x00usb_write_tx_data are similar we can merge them in a single function in rt2x00queue.c. Signed-off-by: Gertjan van Wingerde <gwingerde@gmail.com> Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-06-03rt2x00: Clean up USB vendor request buffer functions.Gertjan van Wingerde1-19/+0
There is no need to force the separation between a buffer USB vendor request that does fit the CSR cache and one that doesn't onto the callers. This is something that the rt2x00usb_vendor_request_buff function can figure out by itself. Combine the rt2x00usb_vendor_request_buff and rt2x00usb_vendor_request_large_buff functions into a single one, as both of them were equivalent for small buffers anyway. Signed-off-by: Gertjan van Wingerde <gwingerde@gmail.com> Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
2010-04-16rt2x00: add txdesc parameter to write_tx_dataHelmut Schaa1-1/+2
Extend the write_tx_data callback with a txdesc parameter to allow access to the tx desciptor while preparing the tx data. Signed-off-by: Helmut Schaa <helmut.schaa@googlemail.com> Acked-by: Gertjan van Wingerde <gwingerde@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-11-12rt2x00: Update copyright statements.Gertjan van Wingerde1-1/+1
As mentioned on the linux-wireless mailing list, the current copyright statements in the rt2x00 are meaningless, as the rt2x00 project is not even a formal legal entity. Therefore it is better to replace the existing copyright statements with copyright statements for the people that actually wrote the code. Note: Updated to the best of my knowledge with respect to who contributed considerable amounts of code. Signed-off-by: Gertjan van Wingerde <gwingerde@gmail.com> Acked-by: Ivo van Doorn <IvDoorn@gmail.com> CC: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-11-11rt2x00: Fix building of rt2800lib when rt2x00 driver is built-in.Gertjan van Wingerde1-0/+2
When enabling rt2800usb as a built-in driver (as opposed to a as a module) the build fails. See http://marc.info/?l=linux-wireless&m=125768687711034&w=2 for details. Fix it by properly including <linux/usb.h> from rt2x00usb.h Signed-off-by: Gertjan van Wingerde <gwingerde@gmail.com> Acked-by: Ivo van Doorn <IvDoorn@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-11-07rt2x00: move REGISTER_BUSY_* definitions to rt2x00.hBartlomiej Zolnierkiewicz1-6/+0
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> Acked-by: Ivo van Doorn <IvDoorn@gmail.com> Acked-by: Gertjan van Wingerde <gwingerde@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-11-07rt2x00: fix rt2x00usb_regbusy_read() argumentsBartlomiej Zolnierkiewicz1-1/+1
Add const to 'field' argument of rt2x00usb_regbusy_read() (all arguments match rt2x00pci_regbusy_read() ones now). Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> Acked-by: Ivo van Doorn <IvDoorn@gmail.com> Acked-by: Gertjan van Wingerde <gwingerde@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-11-07rt2x00: fix rt2x00usb_register_multiwrite() argumentsBartlomiej Zolnierkiewicz1-3/+4
Add const to 'value' argument of rt2x00usb_register_multiwrite() (all arguments match rt2x00pci_register_multiwrite() ones now). Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> Acked-by: Ivo van Doorn <IvDoorn@gmail.com> Acked-by: Gertjan van Wingerde <gwingerde@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-11-05rt2x00: fix rt2x00usb_register_read() commentBartlomiej Zolnierkiewicz1-1/+1
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> Acked-by: Ivo van Doorn <IvDoorn@gmail.com> Acked-by: Gertjan van Wingerde <gwingerde@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-02-09rt2x00: Add kill_tx_queue callback functionIvo van Doorn1-0/+11
provide rt2x00lib the possibility to kill a particular TX queue. This can be useful when disabling the radio, but more importantly will allow beaconing to be disabled when mac80211 requests this (during scanning for example) Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-01-30rt2x00: Update copyright year to 2009Ivo van Doorn1-1/+1
Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-11-26rt2x00: Move rt73usb register access wrappers into rt2x00usbIvo van Doorn1-0/+136
rt2500usb and rt73usb have different register word sizes, for that reason the register access wrappers were never moved into rt2x00usb. With rt2800usb on its way, we should favor the 32bit register access and move those wrappers into rt2x00usb. That saves duplicate code, since only rt2500usb will need the special 16bit wrappers. Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-11-21rt2x00: Cleanup TX/RX entry handlingIvo van Doorn1-4/+1
Merge the callback functions init_txentry() and init_rxentry(). This makes life in rt2x00lib a lot simpler and we can cleanup several functions. rt2x00pci contained "fake" FIELD definitions for descriptor words. This is not flexible since it assumes the driver will always have the same field to indicate if a driver is available or not. This should be dependent on the driver, and we should add a callback function for this. Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-08-02rt2x00: Fix compile warningIvo van Doorn1-1/+1
rt2x00usb_vendor_request_large_buff is write-only, so it is safe to make the argument a const. Fixes compile warning: drivers/net/wireless/rt2x00/rt73usb.c: In function 'rt73usb_load_firmware': drivers/net/wireless/rt2x00/rt73usb.c:916: warning: passing argument 5 of 'rt2x00usb_vendor_request_large_buff' discards qualifiers from pointer target typ Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-30rt2x00: Large vendor requests for rt73usb firmware upload and beaconsIwo Mergler1-1/+0
Switches rt73usb to use large vendor requests for firmware and beacons. This also fixes the garbled beacon bug. Signed-off-by: Iwo Mergler <Iwo@call-direct.com.au> Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-07-30rt2x00: Support for large vendor requestsIwo Mergler1-1/+20
Adds an extra rt2x00 vendor request function to support register transfers beyond the CSR_CACHE_SIZE / USB packet size limit. This is useful for firmware uploads, beacon templates and keys, all of which are to large to do with a single USB request. Signed-off-by: Iwo Mergler <Iwo@call-direct.com.au> Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-06-27rt2x00: Fix sparse warning on nested container_of()Ivo van Doorn1-0/+6
Sparse produces warnings about nested contain_of() statements, this means that lines like: interface_to_usbdev(to_usb_interface(rt2x00dev->dev)); will upset sparse. Add a new macro to rt2x00usb.h which will convert to device structure to the usb_device pointer in 2 steps to prevent this sparse warning. Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-06-14rt2x00: Move generic TX frame writing code into rt2x00queueIvo van Doorn1-4/+7
The write_tx_data functions in rt2x00pci and rt2x00usb have a lot in common. This moves that duplicate code into rt2x00queue_write_tx_frame(). Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-06-14rt2x00: Implement rt2x00usb_kick_tx_queue()Ivo van Doorn1-0/+11
rt2x00usb_kick_tx_queue() will loop over all entries within the INDEX_DONE->INDEX range and kick each entry which is pending to be kicked. This makes the kick_tx_queue approach work the same as with the PCI drivers which will allow for more code generalisation into rt2x00lib. Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-05-22mac80211: move TX info into skb->cbJohannes Berg1-8/+1
This patch converts mac80211 and all drivers to have transmit information and status in skb->cb rather than allocating extra memory for it and copying all the data around. To make it fit, a union is used where only data that is necessary for all steps is kept outside of the union. A number of fixes were done by Ivo, as well as the rt2x00 part of this patch. Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com> Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-05-22rt2x00: Merge RX and TX entry private dataIvo van Doorn1-13/+4
With the pending removal of the tx_control structure we can merge the RX and TX entry private data structure in advance. This will temporarily increase the required memory for the queue, but that overhead will only be limited. Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-05-07rt2x00: Fix kernel-docIvo van Doorn1-3/+3
Add missing kernel-doc variables for structures/functions. Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-05-07rt2x00: Add helper macrosIvo van Doorn1-3/+16
Add some helper macro's to help determining the the timeout for USB register access. Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-02-29rt2x00: Remove async vendor request calls from rt2x00usbIvo van Doorn1-18/+0
The async vendor requests are a ugly hack which is not working correctly. The proper fix for the scheduling while atomic issue is finding out why we can't use led classes for USB drivers and fix that. Just replace all async calls with the regular ones and print an error for the disallowed LED configuration attempts. That will help in determining which led class is causing the problem. Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-02-29rt2x00: Enable LED class support for rt2500usb/rt73usbIvo van Doorn1-34/+95
Add kerneldoc for vendor request functions in rt2x00usb. Add asynchroneous vendor request function in rt2x00usb. With the availability of the asynchroneuous vendor request we can now enable LED class support for rt2500usb and rt73usb. Since LED handling is not important, it doesn't really matter if a register call fails (This solution is better then no LED class support at all). Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-02-29rt2x00: Queue handling overhaulIvo van Doorn1-3/+45
This introduces a big queue handling overhaul, this also renames "ring" to "queues". Move queue handling into rt2x00queue.c and the matching header, use Kerneldoc to improve rt2x00 library documentation. Access to the queues is now protected under a spinlock, this to prevent race conditions which could corrupt the indexing system of the queue. Each queue entry allocates x bytes for driver/device specific data, this cleans up the queue structure significantly and improves code readability. rt2500usb no longer needs 2 entries in the beacon queue to correctly send out the guardian byte. This is now handled in the entry specific structure. rt61 and rt73 now use the correct descriptor size for beacon frames, since this data is written into the registers not the entire TXD descriptor was used but instead of a subset of it named TXINFO. Finally this also fixes numerous other bugs related to incorrect beacon handling or beacon related code. Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-02-29rt2x00: Update copyright noticeIvo van Doorn1-1/+1
Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-01-29rt2x00: Move init_txring and init_rxring into rt2x00libIvo van Doorn1-1/+4
Prior to enabling the radio rt2x00lib should go through all rings and for each entry should call the callback function init_txentry() and init_rxentry(). Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-01-29rt2x00: Place mutex around USB register accessAdam Baker1-0/+8
There is a buffer, csr_cache which is used to hold copies of data being passed to the USB stack which can get corrupted if multiple threads attempt to access CSR registers simultaneously. There is also the possibility if multiple threads try to access BBP or RF registers for the multiple USB operations needed to get interleaved leading to incorrect results. This patch introduces a mutex to prevent such simultaneous access. The interleaved access problem may also affect the PCI devices but if so that will be handled in a follow-up patch. Signed-off-by: Adam Baker <linux@baker-net.org.uk> Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-01-29rt2x00: Unconstify rt2x00devAdam Baker1-6/+5
Some register accesses need rt2x00dev to be non-const they all need modifying so the prototype is consistent. Signed-off-by: Adam Baker <linux@baker-net.org.uk> Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-11[PATCH] rt2x00: Increase rt2x00usb_vendor_request timeout.Ivo van Doorn1-4/+4
By increasing the timeout for rt2x00usb_vendor_request, we should limit the number of loops required to send a signal to the device succefully. 500ms timeout is specified by the Ralink legacy drivers for rt2500usb. For rt73usb 1000ms is specified, but that includes the timeout for the firmware which is already specified in a different define. Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2007-10-11[RT2x00]: add driver for Ralink wireless hardwareIvo van Doorn1-0/+180
Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>