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-rw-r--r--drivers/tty/serial/jsm/jsm.h388
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diff --git a/drivers/tty/serial/jsm/jsm.h b/drivers/tty/serial/jsm/jsm.h
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1/************************************************************************
2 * Copyright 2003 Digi International (www.digi.com)
3 *
4 * Copyright (C) 2004 IBM Corporation. All rights reserved.
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2, or (at your option)
9 * any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY, EXPRESS OR IMPLIED; without even the
13 * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
14 * PURPOSE. See the GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 * Temple Place - Suite 330, Boston,
19 * MA 02111-1307, USA.
20 *
21 * Contact Information:
22 * Scott H Kilau <Scott_Kilau@digi.com>
23 * Wendy Xiong <wendyx@us.ibm.com>
24 *
25 ***********************************************************************/
26
27#ifndef __JSM_DRIVER_H
28#define __JSM_DRIVER_H
29
30#include <linux/kernel.h>
31#include <linux/types.h> /* To pick up the varions Linux types */
32#include <linux/tty.h>
33#include <linux/serial_core.h>
34#include <linux/device.h>
35
36/*
37 * Debugging levels can be set using debug insmod variable
38 * They can also be compiled out completely.
39 */
40enum {
41 DBG_INIT = 0x01,
42 DBG_BASIC = 0x02,
43 DBG_CORE = 0x04,
44 DBG_OPEN = 0x08,
45 DBG_CLOSE = 0x10,
46 DBG_READ = 0x20,
47 DBG_WRITE = 0x40,
48 DBG_IOCTL = 0x80,
49 DBG_PROC = 0x100,
50 DBG_PARAM = 0x200,
51 DBG_PSCAN = 0x400,
52 DBG_EVENT = 0x800,
53 DBG_DRAIN = 0x1000,
54 DBG_MSIGS = 0x2000,
55 DBG_MGMT = 0x4000,
56 DBG_INTR = 0x8000,
57 DBG_CARR = 0x10000,
58};
59
60#define jsm_printk(nlevel, klevel, pdev, fmt, args...) \
61 if ((DBG_##nlevel & jsm_debug)) \
62 dev_printk(KERN_##klevel, pdev->dev, fmt, ## args)
63
64#define MAXLINES 256
65#define MAXPORTS 8
66#define MAX_STOPS_SENT 5
67
68/* Board type definitions */
69
70#define T_NEO 0000
71#define T_CLASSIC 0001
72#define T_PCIBUS 0400
73
74/* Board State Definitions */
75
76#define BD_RUNNING 0x0
77#define BD_REASON 0x7f
78#define BD_NOTFOUND 0x1
79#define BD_NOIOPORT 0x2
80#define BD_NOMEM 0x3
81#define BD_NOBIOS 0x4
82#define BD_NOFEP 0x5
83#define BD_FAILED 0x6
84#define BD_ALLOCATED 0x7
85#define BD_TRIBOOT 0x8
86#define BD_BADKME 0x80
87
88
89/* 4 extra for alignment play space */
90#define WRITEBUFLEN ((4096) + 4)
91#define MYFLIPLEN N_TTY_BUF_SIZE
92
93#define JSM_VERSION "jsm: 1.2-1-INKERNEL"
94#define JSM_PARTNUM "40002438_A-INKERNEL"
95
96struct jsm_board;
97struct jsm_channel;
98
99/************************************************************************
100 * Per board operations structure *
101 ************************************************************************/
102struct board_ops {
103 irq_handler_t intr;
104 void (*uart_init) (struct jsm_channel *ch);
105 void (*uart_off) (struct jsm_channel *ch);
106 void (*param) (struct jsm_channel *ch);
107 void (*assert_modem_signals) (struct jsm_channel *ch);
108 void (*flush_uart_write) (struct jsm_channel *ch);
109 void (*flush_uart_read) (struct jsm_channel *ch);
110 void (*disable_receiver) (struct jsm_channel *ch);
111 void (*enable_receiver) (struct jsm_channel *ch);
112 void (*send_break) (struct jsm_channel *ch);
113 void (*clear_break) (struct jsm_channel *ch, int);
114 void (*send_start_character) (struct jsm_channel *ch);
115 void (*send_stop_character) (struct jsm_channel *ch);
116 void (*copy_data_from_queue_to_uart) (struct jsm_channel *ch);
117 u32 (*get_uart_bytes_left) (struct jsm_channel *ch);
118 void (*send_immediate_char) (struct jsm_channel *ch, unsigned char);
119};
120
121
122/*
123 * Per-board information
124 */
125struct jsm_board
126{
127 int boardnum; /* Board number: 0-32 */
128
129 int type; /* Type of board */
130 u8 rev; /* PCI revision ID */
131 struct pci_dev *pci_dev;
132 u32 maxports; /* MAX ports this board can handle */
133
134 spinlock_t bd_intr_lock; /* Used to protect the poller tasklet and
135 * the interrupt routine from each other.
136 */
137
138 u32 nasync; /* Number of ports on card */
139
140 u32 irq; /* Interrupt request number */
141
142 u64 membase; /* Start of base memory of the card */
143 u64 membase_end; /* End of base memory of the card */
144
145 u8 __iomem *re_map_membase;/* Remapped memory of the card */
146
147 u64 iobase; /* Start of io base of the card */
148 u64 iobase_end; /* End of io base of the card */
149
150 u32 bd_uart_offset; /* Space between each UART */
151
152 struct jsm_channel *channels[MAXPORTS]; /* array of pointers to our channels. */
153 char *flipbuf; /* Our flip buffer, alloced if board is found */
154
155 u32 bd_dividend; /* Board/UARTs specific dividend */
156
157 struct board_ops *bd_ops;
158
159 struct list_head jsm_board_entry;
160};
161
162/************************************************************************
163 * Device flag definitions for ch_flags.
164 ************************************************************************/
165#define CH_PRON 0x0001 /* Printer on string */
166#define CH_STOP 0x0002 /* Output is stopped */
167#define CH_STOPI 0x0004 /* Input is stopped */
168#define CH_CD 0x0008 /* Carrier is present */
169#define CH_FCAR 0x0010 /* Carrier forced on */
170#define CH_HANGUP 0x0020 /* Hangup received */
171
172#define CH_RECEIVER_OFF 0x0040 /* Receiver is off */
173#define CH_OPENING 0x0080 /* Port in fragile open state */
174#define CH_CLOSING 0x0100 /* Port in fragile close state */
175#define CH_FIFO_ENABLED 0x0200 /* Port has FIFOs enabled */
176#define CH_TX_FIFO_EMPTY 0x0400 /* TX Fifo is completely empty */
177#define CH_TX_FIFO_LWM 0x0800 /* TX Fifo is below Low Water */
178#define CH_BREAK_SENDING 0x1000 /* Break is being sent */
179#define CH_LOOPBACK 0x2000 /* Channel is in lookback mode */
180#define CH_FLIPBUF_IN_USE 0x4000 /* Channel's flipbuf is in use */
181#define CH_BAUD0 0x08000 /* Used for checking B0 transitions */
182
183/* Our Read/Error/Write queue sizes */
184#define RQUEUEMASK 0x1FFF /* 8 K - 1 */
185#define EQUEUEMASK 0x1FFF /* 8 K - 1 */
186#define WQUEUEMASK 0x0FFF /* 4 K - 1 */
187#define RQUEUESIZE (RQUEUEMASK + 1)
188#define EQUEUESIZE RQUEUESIZE
189#define WQUEUESIZE (WQUEUEMASK + 1)
190
191
192/************************************************************************
193 * Channel information structure.
194 ************************************************************************/
195struct jsm_channel {
196 struct uart_port uart_port;
197 struct jsm_board *ch_bd; /* Board structure pointer */
198
199 spinlock_t ch_lock; /* provide for serialization */
200 wait_queue_head_t ch_flags_wait;
201
202 u32 ch_portnum; /* Port number, 0 offset. */
203 u32 ch_open_count; /* open count */
204 u32 ch_flags; /* Channel flags */
205
206 u64 ch_close_delay; /* How long we should drop RTS/DTR for */
207
208 tcflag_t ch_c_iflag; /* channel iflags */
209 tcflag_t ch_c_cflag; /* channel cflags */
210 tcflag_t ch_c_oflag; /* channel oflags */
211 tcflag_t ch_c_lflag; /* channel lflags */
212 u8 ch_stopc; /* Stop character */
213 u8 ch_startc; /* Start character */
214
215 u8 ch_mostat; /* FEP output modem status */
216 u8 ch_mistat; /* FEP input modem status */
217
218 struct neo_uart_struct __iomem *ch_neo_uart; /* Pointer to the "mapped" UART struct */
219 u8 ch_cached_lsr; /* Cached value of the LSR register */
220
221 u8 *ch_rqueue; /* Our read queue buffer - malloc'ed */
222 u16 ch_r_head; /* Head location of the read queue */
223 u16 ch_r_tail; /* Tail location of the read queue */
224
225 u8 *ch_equeue; /* Our error queue buffer - malloc'ed */
226 u16 ch_e_head; /* Head location of the error queue */
227 u16 ch_e_tail; /* Tail location of the error queue */
228
229 u8 *ch_wqueue; /* Our write queue buffer - malloc'ed */
230 u16 ch_w_head; /* Head location of the write queue */
231 u16 ch_w_tail; /* Tail location of the write queue */
232
233 u64 ch_rxcount; /* total of data received so far */
234 u64 ch_txcount; /* total of data transmitted so far */
235
236 u8 ch_r_tlevel; /* Receive Trigger level */
237 u8 ch_t_tlevel; /* Transmit Trigger level */
238
239 u8 ch_r_watermark; /* Receive Watermark */
240
241
242 u32 ch_stops_sent; /* How many times I have sent a stop character
243 * to try to stop the other guy sending.
244 */
245 u64 ch_err_parity; /* Count of parity errors on channel */
246 u64 ch_err_frame; /* Count of framing errors on channel */
247 u64 ch_err_break; /* Count of breaks on channel */
248 u64 ch_err_overrun; /* Count of overruns on channel */
249
250 u64 ch_xon_sends; /* Count of xons transmitted */
251 u64 ch_xoff_sends; /* Count of xoffs transmitted */
252};
253
254
255/************************************************************************
256 * Per channel/port NEO UART structure *
257 ************************************************************************
258 * Base Structure Entries Usage Meanings to Host *
259 * *
260 * W = read write R = read only *
261 * U = Unused. *
262 ************************************************************************/
263
264struct neo_uart_struct {
265 u8 txrx; /* WR RHR/THR - Holding Reg */
266 u8 ier; /* WR IER - Interrupt Enable Reg */
267 u8 isr_fcr; /* WR ISR/FCR - Interrupt Status Reg/Fifo Control Reg */
268 u8 lcr; /* WR LCR - Line Control Reg */
269 u8 mcr; /* WR MCR - Modem Control Reg */
270 u8 lsr; /* WR LSR - Line Status Reg */
271 u8 msr; /* WR MSR - Modem Status Reg */
272 u8 spr; /* WR SPR - Scratch Pad Reg */
273 u8 fctr; /* WR FCTR - Feature Control Reg */
274 u8 efr; /* WR EFR - Enhanced Function Reg */
275 u8 tfifo; /* WR TXCNT/TXTRG - Transmit FIFO Reg */
276 u8 rfifo; /* WR RXCNT/RXTRG - Recieve FIFO Reg */
277 u8 xoffchar1; /* WR XOFF 1 - XOff Character 1 Reg */
278 u8 xoffchar2; /* WR XOFF 2 - XOff Character 2 Reg */
279 u8 xonchar1; /* WR XON 1 - Xon Character 1 Reg */
280 u8 xonchar2; /* WR XON 2 - XOn Character 2 Reg */
281
282 u8 reserved1[0x2ff - 0x200]; /* U Reserved by Exar */
283 u8 txrxburst[64]; /* RW 64 bytes of RX/TX FIFO Data */
284 u8 reserved2[0x37f - 0x340]; /* U Reserved by Exar */
285 u8 rxburst_with_errors[64]; /* R 64 bytes of RX FIFO Data + LSR */
286};
287
288/* Where to read the extended interrupt register (32bits instead of 8bits) */
289#define UART_17158_POLL_ADDR_OFFSET 0x80
290
291/*
292 * These are the redefinitions for the FCTR on the XR17C158, since
293 * Exar made them different than their earlier design. (XR16C854)
294 */
295
296/* These are only applicable when table D is selected */
297#define UART_17158_FCTR_RTS_NODELAY 0x00
298#define UART_17158_FCTR_RTS_4DELAY 0x01
299#define UART_17158_FCTR_RTS_6DELAY 0x02
300#define UART_17158_FCTR_RTS_8DELAY 0x03
301#define UART_17158_FCTR_RTS_12DELAY 0x12
302#define UART_17158_FCTR_RTS_16DELAY 0x05
303#define UART_17158_FCTR_RTS_20DELAY 0x13
304#define UART_17158_FCTR_RTS_24DELAY 0x06
305#define UART_17158_FCTR_RTS_28DELAY 0x14
306#define UART_17158_FCTR_RTS_32DELAY 0x07
307#define UART_17158_FCTR_RTS_36DELAY 0x16
308#define UART_17158_FCTR_RTS_40DELAY 0x08
309#define UART_17158_FCTR_RTS_44DELAY 0x09
310#define UART_17158_FCTR_RTS_48DELAY 0x10
311#define UART_17158_FCTR_RTS_52DELAY 0x11
312
313#define UART_17158_FCTR_RTS_IRDA 0x10
314#define UART_17158_FCTR_RS485 0x20
315#define UART_17158_FCTR_TRGA 0x00
316#define UART_17158_FCTR_TRGB 0x40
317#define UART_17158_FCTR_TRGC 0x80
318#define UART_17158_FCTR_TRGD 0xC0
319
320/* 17158 trigger table selects.. */
321#define UART_17158_FCTR_BIT6 0x40
322#define UART_17158_FCTR_BIT7 0x80
323
324/* 17158 TX/RX memmapped buffer offsets */
325#define UART_17158_RX_FIFOSIZE 64
326#define UART_17158_TX_FIFOSIZE 64
327
328/* 17158 Extended IIR's */
329#define UART_17158_IIR_RDI_TIMEOUT 0x0C /* Receiver data TIMEOUT */
330#define UART_17158_IIR_XONXOFF 0x10 /* Received an XON/XOFF char */
331#define UART_17158_IIR_HWFLOW_STATE_CHANGE 0x20 /* CTS/DSR or RTS/DTR state change */
332#define UART_17158_IIR_FIFO_ENABLED 0xC0 /* 16550 FIFOs are Enabled */
333
334/*
335 * These are the extended interrupts that get sent
336 * back to us from the UART's 32bit interrupt register
337 */
338#define UART_17158_RX_LINE_STATUS 0x1 /* RX Ready */
339#define UART_17158_RXRDY_TIMEOUT 0x2 /* RX Ready Timeout */
340#define UART_17158_TXRDY 0x3 /* TX Ready */
341#define UART_17158_MSR 0x4 /* Modem State Change */
342#define UART_17158_TX_AND_FIFO_CLR 0x40 /* Transmitter Holding Reg Empty */
343#define UART_17158_RX_FIFO_DATA_ERROR 0x80 /* UART detected an RX FIFO Data error */
344
345/*
346 * These are the EXTENDED definitions for the 17C158's Interrupt
347 * Enable Register.
348 */
349#define UART_17158_EFR_ECB 0x10 /* Enhanced control bit */
350#define UART_17158_EFR_IXON 0x2 /* Receiver compares Xon1/Xoff1 */
351#define UART_17158_EFR_IXOFF 0x8 /* Transmit Xon1/Xoff1 */
352#define UART_17158_EFR_RTSDTR 0x40 /* Auto RTS/DTR Flow Control Enable */
353#define UART_17158_EFR_CTSDSR 0x80 /* Auto CTS/DSR Flow COntrol Enable */
354
355#define UART_17158_XOFF_DETECT 0x1 /* Indicates whether chip saw an incoming XOFF char */
356#define UART_17158_XON_DETECT 0x2 /* Indicates whether chip saw an incoming XON char */
357
358#define UART_17158_IER_RSVD1 0x10 /* Reserved by Exar */
359#define UART_17158_IER_XOFF 0x20 /* Xoff Interrupt Enable */
360#define UART_17158_IER_RTSDTR 0x40 /* Output Interrupt Enable */
361#define UART_17158_IER_CTSDSR 0x80 /* Input Interrupt Enable */
362
363#define PCI_DEVICE_NEO_2DB9_PCI_NAME "Neo 2 - DB9 Universal PCI"
364#define PCI_DEVICE_NEO_2DB9PRI_PCI_NAME "Neo 2 - DB9 Universal PCI - Powered Ring Indicator"
365#define PCI_DEVICE_NEO_2RJ45_PCI_NAME "Neo 2 - RJ45 Universal PCI"
366#define PCI_DEVICE_NEO_2RJ45PRI_PCI_NAME "Neo 2 - RJ45 Universal PCI - Powered Ring Indicator"
367#define PCIE_DEVICE_NEO_IBM_PCI_NAME "Neo 4 - PCI Express - IBM"
368
369/*
370 * Our Global Variables.
371 */
372extern struct uart_driver jsm_uart_driver;
373extern struct board_ops jsm_neo_ops;
374extern int jsm_debug;
375
376/*************************************************************************
377 *
378 * Prototypes for non-static functions used in more than one module
379 *
380 *************************************************************************/
381int jsm_tty_write(struct uart_port *port);
382int jsm_tty_init(struct jsm_board *);
383int jsm_uart_port_init(struct jsm_board *);
384int jsm_remove_uart_port(struct jsm_board *);
385void jsm_input(struct jsm_channel *ch);
386void jsm_check_queue_flow_control(struct jsm_channel *ch);
387
388#endif
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