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/* SPDX-License-Identifier: GPL-2.0+ */
/************************************************************************
* Copyright 2003 Digi International (www.digi.com)
*
* Copyright (C) 2004 IBM Corporation. All rights reserved.
*
* Contact Information:
* Scott H Kilau <Scott_Kilau@digi.com>
* Wendy Xiong <wendyx@us.ibm.com>
*
***********************************************************************/
#ifndef __JSM_DRIVER_H
#define __JSM_DRIVER_H
#include <linux/kernel.h>
#include <linux/types.h> /* To pick up the varions Linux types */
#include <linux/tty.h>
#include <linux/serial_core.h>
#include <linux/device.h>
/*
* Debugging levels can be set using debug insmod variable
* They can also be compiled out completely.
*/
enum {
DBG_INIT = 0x01,
DBG_BASIC = 0x02,
DBG_CORE = 0x04,
DBG_OPEN = 0x08,
DBG_CLOSE = 0x10,
DBG_READ = 0x20,
DBG_WRITE = 0x40,
DBG_IOCTL = 0x80,
DBG_PROC = 0x100,
DBG_PARAM = 0x200,
DBG_PSCAN = 0x400,
DBG_EVENT = 0x800,
DBG_DRAIN = 0x1000,
DBG_MSIGS = 0x2000,
DBG_MGMT = 0x4000,
DBG_INTR = 0x8000,
DBG_CARR = 0x10000,
};
#define jsm_dbg(nlevel, pdev, fmt, ...) \
do { \
if (DBG_##nlevel & jsm_debug) \
dev_dbg(pdev->dev, fmt, ##__VA_ARGS__); \
} while (0)
#define MAXLINES 256
#define MAXPORTS 8
#define MAX_STOPS_SENT 5
/* Board ids */
#define PCI_DEVICE_ID_CLASSIC_4 0x0028
#define PCI_DEVICE_ID_CLASSIC_8 0x0029
#define PCI_DEVICE_ID_CLASSIC_4_422 0x00D0
#define PCI_DEVICE_ID_CLASSIC_8_422 0x00D1
#define PCI_DEVICE_ID_NEO_4 0x00B0
#define PCI_DEVICE_ID_NEO_1_422 0x00CC
#define PCI_DEVICE_ID_NEO_1_422_485 0x00CD
#define PCI_DEVICE_ID_NEO_2_422_485 0x00CE
#define PCIE_DEVICE_ID_NEO_8 0x00F0
#define PCIE_DEVICE_ID_NEO_4 0x00F1
#define PCIE_DEVICE_ID_NEO_4RJ45 0x00F2
#define PCIE_DEVICE_ID_NEO_8RJ45 0x00F3
/* Board type definitions */
#define T_NEO 0000
#define T_CLASSIC 0001
#define T_PCIBUS 0400
/* Board State Definitions */
#define BD_RUNNING 0x0
#define BD_REASON 0x7f
#define BD_NOTFOUND 0x1
#define BD_NOIOPORT 0x2
#define BD_NOMEM 0x3
#define BD_NOBIOS 0x4
#define BD_NOFEP 0x5
#define BD_FAILED 0x6
#define BD_ALLOCATED 0x7
#define BD_TRIBOOT 0x8
#define BD_BADKME 0x80
/* 4 extra for alignment play space */
#define WRITEBUFLEN ((4096) + 4)
#define JSM_VERSION "jsm: 1.2-1-INKERNEL"
#define JSM_PARTNUM "40002438_A-INKERNEL"
struct jsm_board;
struct jsm_channel;
/************************************************************************
* Per board operations structure *
************************************************************************/
struct board_ops {
irq_handler_t intr;
void (*uart_init)(struct jsm_channel *ch);
void (*uart_off)(struct jsm_channel *ch);
void (*param)(struct jsm_channel *ch);
void (*assert_modem_signals)(struct jsm_channel *ch);
void (*flush_uart_write)(struct jsm_channel *ch);
void (*flush_uart_read)(struct jsm_channel *ch);
void (*disable_receiver)(struct jsm_channel *ch);
void (*enable_receiver)(struct jsm_channel *ch);
void (*send_break)(struct jsm_channel *ch);
void (*clear_break)(struct jsm_channel *ch);
void (*send_start_character)(struct jsm_channel *ch);
void (*send_stop_character)(struct jsm_channel *ch);
void (*copy_data_from_queue_to_uart)(struct jsm_channel *ch);
};
/*
* Per-board information
*/
struct jsm_board
{
int boardnum; /* Board number: 0-32 */
u8 rev; /* PCI revision ID */
struct pci_dev *pci_dev;
u32 maxports; /* MAX ports this board can handle */
spinlock_t bd_intr_lock; /* Used to protect the poller tasklet and
* the interrupt routine from each other.
*/
u32 nasync; /* Number of ports on card */
u32 irq; /* Interrupt request number */
u64 membase; /* Start of base memory of the card */
u64 membase_end; /* End of base memory of the card */
u8 __iomem *re_map_membase;/* Remapped memory of the card */
u64 iobase; /* Start of io base of the card */
u64 iobase_end; /* End of io base of the card */
u32 bd_uart_offset; /* Space between each UART */
struct jsm_channel *channels[MAXPORTS]; /* array of pointers to our channels. */
u32 bd_dividend; /* Board/UARTs specific dividend */
struct board_ops *bd_ops;
};
/************************************************************************
* Device flag definitions for ch_flags.
************************************************************************/
#define CH_PRON 0x0001 /* Printer on string */
#define CH_STOP 0x0002 /* Output is stopped */
#define CH_STOPI 0x0004 /* Input is stopped */
#define CH_CD 0x0008 /* Carrier is present */
#define CH_FCAR 0x0010 /* Carrier forced on */
#define CH_HANGUP 0x0020 /* Hangup received */
#define CH_RECEIVER_OFF 0x0040 /* Receiver is off */
#define CH_OPENING 0x0080 /* Port in fragile open state */
#define CH_CLOSING 0x0100 /* Port in fragile close state */
#define CH_FIFO_ENABLED 0x0200 /* Port has FIFOs enabled */
#define CH_TX_FIFO_EMPTY 0x0400 /* TX Fifo is completely empty */
#define CH_TX_FIFO_LWM 0x0800 /* TX Fifo is below Low Water */
#define CH_BREAK_SENDING 0x1000 /* Break is being sent */
#define CH_LOOPBACK 0x2000 /* Channel is in lookback mode */
#define CH_BAUD0 0x08000 /* Used for checking B0 transitions */
/* Our Read/Error queue sizes */
#define RQUEUEMASK 0x1FFF /* 8 K - 1 */
#define EQUEUEMASK 0x1FFF /* 8 K - 1 */
#define RQUEUESIZE (RQUEUEMASK + 1)
#define EQUEUESIZE RQUEUESIZE
/************************************************************************
* Channel information structure.
************************************************************************/
struct jsm_channel {
struct uart_port uart_port;
struct jsm_board *ch_bd; /* Board structure pointer */
spinlock_t ch_lock; /* provide for serialization */
wait_queue_head_t ch_flags_wait;
u32 ch_portnum; /* Port number, 0 offset. */
u32 ch_open_count; /* open count */
u32 ch_flags; /* Channel flags */
u64 ch_close_delay; /* How long we should drop RTS/DTR for */
tcflag_t ch_c_iflag; /* channel iflags */
tcflag_t ch_c_cflag; /* channel cflags */
tcflag_t ch_c_oflag; /* channel oflags */
tcflag_t ch_c_lflag; /* channel lflags */
u8 ch_stopc; /* Stop character */
u8 ch_startc; /* Start character */
u8 ch_mostat; /* FEP output modem status */
u8 ch_mistat; /* FEP input modem status */
/* Pointers to the "mapped" UART structs */
struct neo_uart_struct __iomem *ch_neo_uart; /* NEO card */
struct cls_uart_struct __iomem *ch_cls_uart; /* Classic card */
u8 ch_cached_lsr; /* Cached value of the LSR register */
u8 *ch_rqueue; /* Our read queue buffer - malloc'ed */
u16 ch_r_head; /* Head location of the read queue */
u16 ch_r_tail; /* Tail location of the read queue */
u8 *ch_equeue; /* Our error queue buffer - malloc'ed */
u16 ch_e_head; /* Head location of the error queue */
u16 ch_e_tail; /* Tail location of the error queue */
u64 ch_rxcount; /* total of data received so far */
u64 ch_txcount; /* total of data transmitted so far */
u8 ch_r_tlevel; /* Receive Trigger level */
u8 ch_t_tlevel; /* Transmit Trigger level */
u8 ch_r_watermark; /* Receive Watermark */
u32 ch_stops_sent; /* How many times I have sent a stop character
* to try to stop the other guy sending.
*/
u64 ch_err_parity; /* Count of parity errors on channel */
u64 ch_err_frame; /* Count of framing errors on channel */
u64 ch_err_break; /* Count of breaks on channel */
u64 ch_err_overrun; /* Count of overruns on channel */
u64 ch_xon_sends; /* Count of xons transmitted */
u64 ch_xoff_sends; /* Count of xoffs transmitted */
};
/************************************************************************
* Per channel/port Classic UART structures *
************************************************************************
* Base Structure Entries Usage Meanings to Host *
* *
* W = read write R = read only *
* U = Unused. *
************************************************************************/
struct cls_uart_struct {
u8 txrx; /* WR RHR/THR - Holding Reg */
u8 ier; /* WR IER - Interrupt Enable Reg */
u8 isr_fcr; /* WR ISR/FCR - Interrupt Status Reg/Fifo Control Reg*/
u8 lcr; /* WR LCR - Line Control Reg */
u8 mcr; /* WR MCR - Modem Control Reg */
u8 lsr; /* WR LSR - Line Status Reg */
u8 msr; /* WR MSR - Modem Status Reg */
u8 spr; /* WR SPR - Scratch Pad Reg */
};
/* Where to read the interrupt register (8bits) */
#define UART_CLASSIC_POLL_ADDR_OFFSET 0x40
#define UART_EXAR654_ENHANCED_REGISTER_SET 0xBF
#define UART_16654_FCR_TXTRIGGER_8 0x0
#define UART_16654_FCR_TXTRIGGER_16 0x10
#define UART_16654_FCR_TXTRIGGER_32 0x20
#define UART_16654_FCR_TXTRIGGER_56 0x30
#define UART_16654_FCR_RXTRIGGER_8 0x0
#define UART_16654_FCR_RXTRIGGER_16 0x40
#define UART_16654_FCR_RXTRIGGER_56 0x80
#define UART_16654_FCR_RXTRIGGER_60 0xC0
#define UART_IIR_CTSRTS 0x20 /* Received CTS/RTS change of state */
#define UART_IIR_RDI_TIMEOUT 0x0C /* Receiver data TIMEOUT */
/*
* These are the EXTENDED definitions for the Exar 654's Interrupt
* Enable Register.
*/
#define UART_EXAR654_EFR_ECB 0x10 /* Enhanced control bit */
#define UART_EXAR654_EFR_IXON 0x2 /* Receiver compares Xon1/Xoff1 */
#define UART_EXAR654_EFR_IXOFF 0x8 /* Transmit Xon1/Xoff1 */
#define UART_EXAR654_EFR_RTSDTR 0x40 /* Auto RTS/DTR Flow Control Enable */
#define UART_EXAR654_EFR_CTSDSR 0x80 /* Auto CTS/DSR Flow COntrol Enable */
#define UART_EXAR654_XOFF_DETECT 0x1 /* Indicates whether chip saw an incoming XOFF char */
#define UART_EXAR654_XON_DETECT 0x2 /* Indicates whether chip saw an incoming XON char */
#define UART_EXAR654_IER_XOFF 0x20 /* Xoff Interrupt Enable */
#define UART_EXAR654_IER_RTSDTR 0x40 /* Output Interrupt Enable */
#define UART_EXAR654_IER_CTSDSR 0x80 /* Input Interrupt Enable */
/************************************************************************
* Per channel/port NEO UART structure *
************************************************************************
* Base Structure Entries Usage Meanings to Host *
* *
* W = read write R = read only *
* U = Unused. *
************************************************************************/
struct neo_uart_struct {
u8 txrx; /* WR RHR/THR - Holding Reg */
u8 ier; /* WR IER - Interrupt Enable Reg */
u8 isr_fcr; /* WR ISR/FCR - Interrupt Status Reg/Fifo Control Reg */
u8 lcr; /* WR LCR - Line Control Reg */
u8 mcr; /* WR MCR - Modem Control Reg */
u8 lsr; /* WR LSR - Line Status Reg */
u8 msr; /* WR MSR - Modem Status Reg */
u8 spr; /* WR SPR - Scratch Pad Reg */
u8 fctr; /* WR FCTR - Feature Control Reg */
u8 efr; /* WR EFR - Enhanced Function Reg */
u8 tfifo; /* WR TXCNT/TXTRG - Transmit FIFO Reg */
u8 rfifo; /* WR RXCNT/RXTRG - Receive FIFO Reg */
u8 xoffchar1; /* WR XOFF 1 - XOff Character 1 Reg */
u8 xoffchar2; /* WR XOFF 2 - XOff Character 2 Reg */
u8 xonchar1; /* WR XON 1 - Xon Character 1 Reg */
u8 xonchar2; /* WR XON 2 - XOn Character 2 Reg */
u8 reserved1[0x2ff - 0x200]; /* U Reserved by Exar */
u8 txrxburst[64]; /* RW 64 bytes of RX/TX FIFO Data */
u8 reserved2[0x37f - 0x340]; /* U Reserved by Exar */
u8 rxburst_with_errors[64]; /* R 64 bytes of RX FIFO Data + LSR */
};
/* Where to read the extended interrupt register (32bits instead of 8bits) */
#define UART_17158_POLL_ADDR_OFFSET 0x80
/*
* These are the redefinitions for the FCTR on the XR17C158, since
* Exar made them different than their earlier design. (XR16C854)
*/
/* These are only applicable when table D is selected */
#define UART_17158_FCTR_RTS_NODELAY 0x00
#define UART_17158_FCTR_RTS_4DELAY 0x01
#define UART_17158_FCTR_RTS_6DELAY 0x02
#define UART_17158_FCTR_RTS_8DELAY 0x03
#define UART_17158_FCTR_RTS_12DELAY 0x12
#define UART_17158_FCTR_RTS_16DELAY 0x05
#define UART_17158_FCTR_RTS_20DELAY 0x13
#define UART_17158_FCTR_RTS_24DELAY 0x06
#define UART_17158_FCTR_RTS_28DELAY 0x14
#define UART_17158_FCTR_RTS_32DELAY 0x07
#define UART_17158_FCTR_RTS_36DELAY 0x16
#define UART_17158_FCTR_RTS_40DELAY 0x08
#define UART_17158_FCTR_RTS_44DELAY 0x09
#define UART_17158_FCTR_RTS_48DELAY 0x10
#define UART_17158_FCTR_RTS_52DELAY 0x11
#define UART_17158_FCTR_RTS_IRDA 0x10
#define UART_17158_FCTR_RS485 0x20
#define UART_17158_FCTR_TRGA 0x00
#define UART_17158_FCTR_TRGB 0x40
#define UART_17158_FCTR_TRGC 0x80
#define UART_17158_FCTR_TRGD 0xC0
/* 17158 trigger table selects.. */
#define UART_17158_FCTR_BIT6 0x40
#define UART_17158_FCTR_BIT7 0x80
/* 17158 TX/RX memmapped buffer offsets */
#define UART_17158_RX_FIFOSIZE 64
#define UART_17158_TX_FIFOSIZE 64
/* 17158 Extended IIR's */
#define UART_17158_IIR_RDI_TIMEOUT 0x0C /* Receiver data TIMEOUT */
#define UART_17158_IIR_XONXOFF 0x10 /* Received an XON/XOFF char */
#define UART_17158_IIR_HWFLOW_STATE_CHANGE 0x20 /* CTS/DSR or RTS/DTR state change */
#define UART_17158_IIR_FIFO_ENABLED 0xC0 /* 16550 FIFOs are Enabled */
/*
* These are the extended interrupts that get sent
* back to us from the UART's 32bit interrupt register
*/
#define UART_17158_RX_LINE_STATUS 0x1 /* RX Ready */
#define UART_17158_RXRDY_TIMEOUT 0x2 /* RX Ready Timeout */
#define UART_17158_TXRDY 0x3 /* TX Ready */
#define UART_17158_MSR 0x4 /* Modem State Change */
#define UART_17158_TX_AND_FIFO_CLR 0x40 /* Transmitter Holding Reg Empty */
#define UART_17158_RX_FIFO_DATA_ERROR 0x80 /* UART detected an RX FIFO Data error */
/*
* These are the EXTENDED definitions for the 17C158's Interrupt
* Enable Register.
*/
#define UART_17158_EFR_ECB 0x10 /* Enhanced control bit */
#define UART_17158_EFR_IXON 0x2 /* Receiver compares Xon1/Xoff1 */
#define UART_17158_EFR_IXOFF 0x8 /* Transmit Xon1/Xoff1 */
#define UART_17158_EFR_RTSDTR 0x40 /* Auto RTS/DTR Flow Control Enable */
#define UART_17158_EFR_CTSDSR 0x80 /* Auto CTS/DSR Flow COntrol Enable */
#define UART_17158_XOFF_DETECT 0x1 /* Indicates whether chip saw an incoming XOFF char */
#define UART_17158_XON_DETECT 0x2 /* Indicates whether chip saw an incoming XON char */
#define UART_17158_IER_RSVD1 0x10 /* Reserved by Exar */
#define UART_17158_IER_XOFF 0x20 /* Xoff Interrupt Enable */
#define UART_17158_IER_RTSDTR 0x40 /* Output Interrupt Enable */
#define UART_17158_IER_CTSDSR 0x80 /* Input Interrupt Enable */
#define PCI_DEVICE_NEO_2DB9_PCI_NAME "Neo 2 - DB9 Universal PCI"
#define PCI_DEVICE_NEO_2DB9PRI_PCI_NAME "Neo 2 - DB9 Universal PCI - Powered Ring Indicator"
#define PCI_DEVICE_NEO_2RJ45_PCI_NAME "Neo 2 - RJ45 Universal PCI"
#define PCI_DEVICE_NEO_2RJ45PRI_PCI_NAME "Neo 2 - RJ45 Universal PCI - Powered Ring Indicator"
#define PCIE_DEVICE_NEO_IBM_PCI_NAME "Neo 4 - PCI Express - IBM"
/*
* Our Global Variables.
*/
extern struct uart_driver jsm_uart_driver;
extern struct board_ops jsm_neo_ops;
extern struct board_ops jsm_cls_ops;
extern int jsm_debug;
/*************************************************************************
*
* Prototypes for non-static functions used in more than one module
*
*************************************************************************/
int jsm_tty_init(struct jsm_board *);
int jsm_uart_port_init(struct jsm_board *);
int jsm_remove_uart_port(struct jsm_board *);
void jsm_input(struct jsm_channel *ch);
void jsm_check_queue_flow_control(struct jsm_channel *ch);
#endif
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