blob: 777d5f9cf6cc13e4d91c3ec175621aa4c16d2456 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * RocketPort device driver for Linux
3 *
4 * Written by Theodore Ts'o, 1995, 1996, 1997, 1998, 1999, 2000.
5 *
6 * Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2003 by Comtrol, Inc.
7 *
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of the
11 * License, or (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful, but
14 * WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21 */
22
23/*
24 * Kernel Synchronization:
25 *
26 * This driver has 2 kernel control paths - exception handlers (calls into the driver
27 * from user mode) and the timer bottom half (tasklet). This is a polled driver, interrupts
28 * are not used.
29 *
30 * Critical data:
31 * - rp_table[], accessed through passed "info" pointers, is a global (static) array of
32 * serial port state information and the xmit_buf circular buffer. Protected by
33 * a per port spinlock.
34 * - xmit_flags[], an array of ints indexed by line (port) number, indicating that there
35 * is data to be transmitted. Protected by atomic bit operations.
36 * - rp_num_ports, int indicating number of open ports, protected by atomic operations.
37 *
38 * rp_write() and rp_write_char() functions use a per port semaphore to protect against
39 * simultaneous access to the same port by more than one process.
40 */
41
42/****** Defines ******/
Linus Torvalds1da177e2005-04-16 15:20:36 -070043#define ROCKET_PARANOIA_CHECK
44#define ROCKET_DISABLE_SIMUSAGE
45
46#undef ROCKET_SOFT_FLOW
47#undef ROCKET_DEBUG_OPEN
48#undef ROCKET_DEBUG_INTR
49#undef ROCKET_DEBUG_WRITE
50#undef ROCKET_DEBUG_FLOW
51#undef ROCKET_DEBUG_THROTTLE
52#undef ROCKET_DEBUG_WAIT_UNTIL_SENT
53#undef ROCKET_DEBUG_RECEIVE
54#undef ROCKET_DEBUG_HANGUP
55#undef REV_PCI_ORDER
56#undef ROCKET_DEBUG_IO
57
58#define POLL_PERIOD HZ/100 /* Polling period .01 seconds (10ms) */
59
60/****** Kernel includes ******/
61
Linus Torvalds1da177e2005-04-16 15:20:36 -070062#include <linux/module.h>
63#include <linux/errno.h>
64#include <linux/major.h>
65#include <linux/kernel.h>
66#include <linux/signal.h>
67#include <linux/slab.h>
68#include <linux/mm.h>
69#include <linux/sched.h>
70#include <linux/timer.h>
71#include <linux/interrupt.h>
72#include <linux/tty.h>
73#include <linux/tty_driver.h>
74#include <linux/tty_flip.h>
Alan Cox44b7d1b2008-07-16 21:57:18 +010075#include <linux/serial.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070076#include <linux/string.h>
77#include <linux/fcntl.h>
78#include <linux/ptrace.h>
Matthias Kaehlcke69f545e2007-05-08 00:32:00 -070079#include <linux/mutex.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070080#include <linux/ioport.h>
81#include <linux/delay.h>
Jiri Slaby8cf5a8c2007-10-18 03:06:25 -070082#include <linux/completion.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070083#include <linux/wait.h>
84#include <linux/pci.h>
Alan Cox44b7d1b2008-07-16 21:57:18 +010085#include <linux/uaccess.h>
Arun Sharma600634972011-07-26 16:09:06 -070086#include <linux/atomic.h>
Al Viro457fb602008-03-19 16:27:48 +000087#include <asm/unaligned.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070088#include <linux/bitops.h>
89#include <linux/spinlock.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070090#include <linux/init.h>
91
92/****** RocketPort includes ******/
93
94#include "rocket_int.h"
95#include "rocket.h"
96
97#define ROCKET_VERSION "2.09"
98#define ROCKET_DATE "12-June-2003"
99
100/****** RocketPort Local Variables ******/
101
Jiri Slaby40565f12007-02-12 00:52:31 -0800102static void rp_do_poll(unsigned long dummy);
103
Linus Torvalds1da177e2005-04-16 15:20:36 -0700104static struct tty_driver *rocket_driver;
105
106static struct rocket_version driver_version = {
107 ROCKET_VERSION, ROCKET_DATE
108};
109
110static struct r_port *rp_table[MAX_RP_PORTS]; /* The main repository of serial port state information. */
111static unsigned int xmit_flags[NUM_BOARDS]; /* Bit significant, indicates port had data to transmit. */
112 /* eg. Bit 0 indicates port 0 has xmit data, ... */
113static atomic_t rp_num_ports_open; /* Number of serial ports open */
Jiri Slaby40565f12007-02-12 00:52:31 -0800114static DEFINE_TIMER(rocket_timer, rp_do_poll, 0, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700115
116static unsigned long board1; /* ISA addresses, retrieved from rocketport.conf */
117static unsigned long board2;
118static unsigned long board3;
119static unsigned long board4;
120static unsigned long controller;
Rusty Russell90ab5ee2012-01-13 09:32:20 +1030121static bool support_low_speed;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700122static unsigned long modem1;
123static unsigned long modem2;
124static unsigned long modem3;
125static unsigned long modem4;
126static unsigned long pc104_1[8];
127static unsigned long pc104_2[8];
128static unsigned long pc104_3[8];
129static unsigned long pc104_4[8];
130static unsigned long *pc104[4] = { pc104_1, pc104_2, pc104_3, pc104_4 };
131
132static int rp_baud_base[NUM_BOARDS]; /* Board config info (Someday make a per-board structure) */
133static unsigned long rcktpt_io_addr[NUM_BOARDS];
134static int rcktpt_type[NUM_BOARDS];
135static int is_PCI[NUM_BOARDS];
136static rocketModel_t rocketModel[NUM_BOARDS];
137static int max_board;
Alan Cox31f35932009-01-02 13:45:05 +0000138static const struct tty_port_operations rocket_port_ops;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700139
140/*
141 * The following arrays define the interrupt bits corresponding to each AIOP.
142 * These bits are different between the ISA and regular PCI boards and the
143 * Universal PCI boards.
144 */
145
146static Word_t aiop_intr_bits[AIOP_CTL_SIZE] = {
147 AIOP_INTR_BIT_0,
148 AIOP_INTR_BIT_1,
149 AIOP_INTR_BIT_2,
150 AIOP_INTR_BIT_3
151};
152
153static Word_t upci_aiop_intr_bits[AIOP_CTL_SIZE] = {
154 UPCI_AIOP_INTR_BIT_0,
155 UPCI_AIOP_INTR_BIT_1,
156 UPCI_AIOP_INTR_BIT_2,
157 UPCI_AIOP_INTR_BIT_3
158};
159
Adrian Bunkf15313b2005-06-25 14:59:05 -0700160static Byte_t RData[RDATASIZE] = {
161 0x00, 0x09, 0xf6, 0x82,
162 0x02, 0x09, 0x86, 0xfb,
163 0x04, 0x09, 0x00, 0x0a,
164 0x06, 0x09, 0x01, 0x0a,
165 0x08, 0x09, 0x8a, 0x13,
166 0x0a, 0x09, 0xc5, 0x11,
167 0x0c, 0x09, 0x86, 0x85,
168 0x0e, 0x09, 0x20, 0x0a,
169 0x10, 0x09, 0x21, 0x0a,
170 0x12, 0x09, 0x41, 0xff,
171 0x14, 0x09, 0x82, 0x00,
172 0x16, 0x09, 0x82, 0x7b,
173 0x18, 0x09, 0x8a, 0x7d,
174 0x1a, 0x09, 0x88, 0x81,
175 0x1c, 0x09, 0x86, 0x7a,
176 0x1e, 0x09, 0x84, 0x81,
177 0x20, 0x09, 0x82, 0x7c,
178 0x22, 0x09, 0x0a, 0x0a
179};
180
181static Byte_t RRegData[RREGDATASIZE] = {
182 0x00, 0x09, 0xf6, 0x82, /* 00: Stop Rx processor */
183 0x08, 0x09, 0x8a, 0x13, /* 04: Tx software flow control */
184 0x0a, 0x09, 0xc5, 0x11, /* 08: XON char */
185 0x0c, 0x09, 0x86, 0x85, /* 0c: XANY */
186 0x12, 0x09, 0x41, 0xff, /* 10: Rx mask char */
187 0x14, 0x09, 0x82, 0x00, /* 14: Compare/Ignore #0 */
188 0x16, 0x09, 0x82, 0x7b, /* 18: Compare #1 */
189 0x18, 0x09, 0x8a, 0x7d, /* 1c: Compare #2 */
190 0x1a, 0x09, 0x88, 0x81, /* 20: Interrupt #1 */
191 0x1c, 0x09, 0x86, 0x7a, /* 24: Ignore/Replace #1 */
192 0x1e, 0x09, 0x84, 0x81, /* 28: Interrupt #2 */
193 0x20, 0x09, 0x82, 0x7c, /* 2c: Ignore/Replace #2 */
194 0x22, 0x09, 0x0a, 0x0a /* 30: Rx FIFO Enable */
195};
196
197static CONTROLLER_T sController[CTL_SIZE] = {
198 {-1, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, {0, 0, 0, 0},
199 {0, 0, 0, 0}, {-1, -1, -1, -1}, {0, 0, 0, 0}},
200 {-1, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, {0, 0, 0, 0},
201 {0, 0, 0, 0}, {-1, -1, -1, -1}, {0, 0, 0, 0}},
202 {-1, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, {0, 0, 0, 0},
203 {0, 0, 0, 0}, {-1, -1, -1, -1}, {0, 0, 0, 0}},
204 {-1, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, {0, 0, 0, 0},
205 {0, 0, 0, 0}, {-1, -1, -1, -1}, {0, 0, 0, 0}}
206};
207
208static Byte_t sBitMapClrTbl[8] = {
209 0xfe, 0xfd, 0xfb, 0xf7, 0xef, 0xdf, 0xbf, 0x7f
210};
211
212static Byte_t sBitMapSetTbl[8] = {
213 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80
214};
215
216static int sClockPrescale = 0x14;
217
Linus Torvalds1da177e2005-04-16 15:20:36 -0700218/*
219 * Line number is the ttySIx number (x), the Minor number. We
220 * assign them sequentially, starting at zero. The following
221 * array keeps track of the line number assigned to a given board/aiop/channel.
222 */
223static unsigned char lineNumbers[MAX_RP_PORTS];
224static unsigned long nextLineNumber;
225
226/***** RocketPort Static Prototypes *********/
227static int __init init_ISA(int i);
228static void rp_wait_until_sent(struct tty_struct *tty, int timeout);
229static void rp_flush_buffer(struct tty_struct *tty);
230static void rmSpeakerReset(CONTROLLER_T * CtlP, unsigned long model);
231static unsigned char GetLineNumber(int ctrl, int aiop, int ch);
232static unsigned char SetLineNumber(int ctrl, int aiop, int ch);
233static void rp_start(struct tty_struct *tty);
Adrian Bunkf15313b2005-06-25 14:59:05 -0700234static int sInitChan(CONTROLLER_T * CtlP, CHANNEL_T * ChP, int AiopNum,
235 int ChanNum);
236static void sSetInterfaceMode(CHANNEL_T * ChP, Byte_t mode);
237static void sFlushRxFIFO(CHANNEL_T * ChP);
238static void sFlushTxFIFO(CHANNEL_T * ChP);
239static void sEnInterrupts(CHANNEL_T * ChP, Word_t Flags);
240static void sDisInterrupts(CHANNEL_T * ChP, Word_t Flags);
241static void sModemReset(CONTROLLER_T * CtlP, int chan, int on);
242static void sPCIModemReset(CONTROLLER_T * CtlP, int chan, int on);
243static int sWriteTxPrioByte(CHANNEL_T * ChP, Byte_t Data);
244static int sPCIInitController(CONTROLLER_T * CtlP, int CtlNum,
245 ByteIO_t * AiopIOList, int AiopIOListSize,
246 WordIO_t ConfigIO, int IRQNum, Byte_t Frequency,
247 int PeriodicOnly, int altChanRingIndicator,
248 int UPCIRingInd);
249static int sInitController(CONTROLLER_T * CtlP, int CtlNum, ByteIO_t MudbacIO,
250 ByteIO_t * AiopIOList, int AiopIOListSize,
251 int IRQNum, Byte_t Frequency, int PeriodicOnly);
252static int sReadAiopID(ByteIO_t io);
253static int sReadAiopNumChan(WordIO_t io);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700254
Linus Torvalds1da177e2005-04-16 15:20:36 -0700255MODULE_AUTHOR("Theodore Ts'o");
256MODULE_DESCRIPTION("Comtrol RocketPort driver");
257module_param(board1, ulong, 0);
258MODULE_PARM_DESC(board1, "I/O port for (ISA) board #1");
259module_param(board2, ulong, 0);
260MODULE_PARM_DESC(board2, "I/O port for (ISA) board #2");
261module_param(board3, ulong, 0);
262MODULE_PARM_DESC(board3, "I/O port for (ISA) board #3");
263module_param(board4, ulong, 0);
264MODULE_PARM_DESC(board4, "I/O port for (ISA) board #4");
265module_param(controller, ulong, 0);
266MODULE_PARM_DESC(controller, "I/O port for (ISA) rocketport controller");
267module_param(support_low_speed, bool, 0);
268MODULE_PARM_DESC(support_low_speed, "1 means support 50 baud, 0 means support 460400 baud");
269module_param(modem1, ulong, 0);
270MODULE_PARM_DESC(modem1, "1 means (ISA) board #1 is a RocketModem");
271module_param(modem2, ulong, 0);
272MODULE_PARM_DESC(modem2, "1 means (ISA) board #2 is a RocketModem");
273module_param(modem3, ulong, 0);
274MODULE_PARM_DESC(modem3, "1 means (ISA) board #3 is a RocketModem");
275module_param(modem4, ulong, 0);
276MODULE_PARM_DESC(modem4, "1 means (ISA) board #4 is a RocketModem");
277module_param_array(pc104_1, ulong, NULL, 0);
278MODULE_PARM_DESC(pc104_1, "set interface types for ISA(PC104) board #1 (e.g. pc104_1=232,232,485,485,...");
279module_param_array(pc104_2, ulong, NULL, 0);
280MODULE_PARM_DESC(pc104_2, "set interface types for ISA(PC104) board #2 (e.g. pc104_2=232,232,485,485,...");
281module_param_array(pc104_3, ulong, NULL, 0);
282MODULE_PARM_DESC(pc104_3, "set interface types for ISA(PC104) board #3 (e.g. pc104_3=232,232,485,485,...");
283module_param_array(pc104_4, ulong, NULL, 0);
284MODULE_PARM_DESC(pc104_4, "set interface types for ISA(PC104) board #4 (e.g. pc104_4=232,232,485,485,...");
285
Bjorn Helgaasd269cdd2005-10-30 15:03:14 -0800286static int rp_init(void);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700287static void rp_cleanup_module(void);
288
289module_init(rp_init);
290module_exit(rp_cleanup_module);
291
Linus Torvalds1da177e2005-04-16 15:20:36 -0700292
Linus Torvalds1da177e2005-04-16 15:20:36 -0700293MODULE_LICENSE("Dual BSD/GPL");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700294
295/*************************************************************************/
296/* Module code starts here */
297
298static inline int rocket_paranoia_check(struct r_port *info,
299 const char *routine)
300{
301#ifdef ROCKET_PARANOIA_CHECK
302 if (!info)
303 return 1;
304 if (info->magic != RPORT_MAGIC) {
Jiri Slaby68562b72008-02-07 00:16:33 -0800305 printk(KERN_WARNING "Warning: bad magic number for rocketport "
306 "struct in %s\n", routine);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700307 return 1;
308 }
309#endif
310 return 0;
311}
312
313
314/* Serial port receive data function. Called (from timer poll) when an AIOPIC signals
315 * that receive data is present on a serial port. Pulls data from FIFO, moves it into the
316 * tty layer.
317 */
318static void rp_do_receive(struct r_port *info,
319 struct tty_struct *tty,
320 CHANNEL_t * cp, unsigned int ChanStatus)
321{
322 unsigned int CharNStat;
Paul Fulghumcc44a812006-06-25 05:49:12 -0700323 int ToRecv, wRecv, space;
324 unsigned char *cbuf;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700325
326 ToRecv = sGetRxCnt(cp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700327#ifdef ROCKET_DEBUG_INTR
Jiri Slaby68562b72008-02-07 00:16:33 -0800328 printk(KERN_INFO "rp_do_receive(%d)...\n", ToRecv);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700329#endif
Paul Fulghumcc44a812006-06-25 05:49:12 -0700330 if (ToRecv == 0)
331 return;
Alan Cox33f0f882006-01-09 20:54:13 -0800332
Linus Torvalds1da177e2005-04-16 15:20:36 -0700333 /*
334 * if status indicates there are errored characters in the
335 * FIFO, then enter status mode (a word in FIFO holds
336 * character and status).
337 */
338 if (ChanStatus & (RXFOVERFL | RXBREAK | RXFRAME | RXPARITY)) {
339 if (!(ChanStatus & STATMODE)) {
340#ifdef ROCKET_DEBUG_RECEIVE
Jiri Slaby68562b72008-02-07 00:16:33 -0800341 printk(KERN_INFO "Entering STATMODE...\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700342#endif
343 ChanStatus |= STATMODE;
344 sEnRxStatusMode(cp);
345 }
346 }
347
348 /*
349 * if we previously entered status mode, then read down the
350 * FIFO one word at a time, pulling apart the character and
351 * the status. Update error counters depending on status
352 */
353 if (ChanStatus & STATMODE) {
354#ifdef ROCKET_DEBUG_RECEIVE
Jiri Slaby68562b72008-02-07 00:16:33 -0800355 printk(KERN_INFO "Ignore %x, read %x...\n",
356 info->ignore_status_mask, info->read_status_mask);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700357#endif
358 while (ToRecv) {
Paul Fulghumcc44a812006-06-25 05:49:12 -0700359 char flag;
360
Linus Torvalds1da177e2005-04-16 15:20:36 -0700361 CharNStat = sInW(sGetTxRxDataIO(cp));
362#ifdef ROCKET_DEBUG_RECEIVE
Jiri Slaby68562b72008-02-07 00:16:33 -0800363 printk(KERN_INFO "%x...\n", CharNStat);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700364#endif
365 if (CharNStat & STMBREAKH)
366 CharNStat &= ~(STMFRAMEH | STMPARITYH);
367 if (CharNStat & info->ignore_status_mask) {
368 ToRecv--;
369 continue;
370 }
371 CharNStat &= info->read_status_mask;
372 if (CharNStat & STMBREAKH)
Paul Fulghumcc44a812006-06-25 05:49:12 -0700373 flag = TTY_BREAK;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700374 else if (CharNStat & STMPARITYH)
Paul Fulghumcc44a812006-06-25 05:49:12 -0700375 flag = TTY_PARITY;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700376 else if (CharNStat & STMFRAMEH)
Paul Fulghumcc44a812006-06-25 05:49:12 -0700377 flag = TTY_FRAME;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700378 else if (CharNStat & STMRCVROVRH)
Paul Fulghumcc44a812006-06-25 05:49:12 -0700379 flag = TTY_OVERRUN;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700380 else
Paul Fulghumcc44a812006-06-25 05:49:12 -0700381 flag = TTY_NORMAL;
382 tty_insert_flip_char(tty, CharNStat & 0xff, flag);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700383 ToRecv--;
384 }
385
386 /*
387 * after we've emptied the FIFO in status mode, turn
388 * status mode back off
389 */
390 if (sGetRxCnt(cp) == 0) {
391#ifdef ROCKET_DEBUG_RECEIVE
392 printk(KERN_INFO "Status mode off.\n");
393#endif
394 sDisRxStatusMode(cp);
395 }
396 } else {
397 /*
398 * we aren't in status mode, so read down the FIFO two
399 * characters at time by doing repeated word IO
400 * transfer.
401 */
Paul Fulghumcc44a812006-06-25 05:49:12 -0700402 space = tty_prepare_flip_string(tty, &cbuf, ToRecv);
403 if (space < ToRecv) {
404#ifdef ROCKET_DEBUG_RECEIVE
405 printk(KERN_INFO "rp_do_receive:insufficient space ToRecv=%d space=%d\n", ToRecv, space);
406#endif
407 if (space <= 0)
408 return;
409 ToRecv = space;
410 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700411 wRecv = ToRecv >> 1;
412 if (wRecv)
413 sInStrW(sGetTxRxDataIO(cp), (unsigned short *) cbuf, wRecv);
414 if (ToRecv & 1)
415 cbuf[ToRecv - 1] = sInB(sGetTxRxDataIO(cp));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700416 }
417 /* Push the data up to the tty layer */
Paul Fulghumcc44a812006-06-25 05:49:12 -0700418 tty_flip_buffer_push(tty);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700419}
420
421/*
422 * Serial port transmit data function. Called from the timer polling loop as a
423 * result of a bit set in xmit_flags[], indicating data (from the tty layer) is ready
424 * to be sent out the serial port. Data is buffered in rp_table[line].xmit_buf, it is
425 * moved to the port's xmit FIFO. *info is critical data, protected by spinlocks.
426 */
427static void rp_do_transmit(struct r_port *info)
428{
429 int c;
430 CHANNEL_t *cp = &info->channel;
431 struct tty_struct *tty;
432 unsigned long flags;
433
434#ifdef ROCKET_DEBUG_INTR
Jiri Slaby68562b72008-02-07 00:16:33 -0800435 printk(KERN_DEBUG "%s\n", __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700436#endif
437 if (!info)
438 return;
Alan Cox47b01b32009-01-02 13:48:30 +0000439 tty = tty_port_tty_get(&info->port);
440
441 if (tty == NULL) {
442 printk(KERN_WARNING "rp: WARNING %s called with tty==NULL\n", __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700443 clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
444 return;
445 }
446
447 spin_lock_irqsave(&info->slock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700448 info->xmit_fifo_room = TXFIFO_SIZE - sGetTxCnt(cp);
449
450 /* Loop sending data to FIFO until done or FIFO full */
451 while (1) {
452 if (tty->stopped || tty->hw_stopped)
453 break;
Harvey Harrison709107f2008-04-30 00:53:51 -0700454 c = min(info->xmit_fifo_room, info->xmit_cnt);
455 c = min(c, XMIT_BUF_SIZE - info->xmit_tail);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700456 if (c <= 0 || info->xmit_fifo_room <= 0)
457 break;
458 sOutStrW(sGetTxRxDataIO(cp), (unsigned short *) (info->xmit_buf + info->xmit_tail), c / 2);
459 if (c & 1)
460 sOutB(sGetTxRxDataIO(cp), info->xmit_buf[info->xmit_tail + c - 1]);
461 info->xmit_tail += c;
462 info->xmit_tail &= XMIT_BUF_SIZE - 1;
463 info->xmit_cnt -= c;
464 info->xmit_fifo_room -= c;
465#ifdef ROCKET_DEBUG_INTR
Jiri Slaby68562b72008-02-07 00:16:33 -0800466 printk(KERN_INFO "tx %d chars...\n", c);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700467#endif
468 }
469
470 if (info->xmit_cnt == 0)
471 clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
472
473 if (info->xmit_cnt < WAKEUP_CHARS) {
474 tty_wakeup(tty);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700475#ifdef ROCKETPORT_HAVE_POLL_WAIT
476 wake_up_interruptible(&tty->poll_wait);
477#endif
478 }
479
480 spin_unlock_irqrestore(&info->slock, flags);
Alan Cox47b01b32009-01-02 13:48:30 +0000481 tty_kref_put(tty);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700482
483#ifdef ROCKET_DEBUG_INTR
Jiri Slaby68562b72008-02-07 00:16:33 -0800484 printk(KERN_DEBUG "(%d,%d,%d,%d)...\n", info->xmit_cnt, info->xmit_head,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700485 info->xmit_tail, info->xmit_fifo_room);
486#endif
487}
488
489/*
490 * Called when a serial port signals it has read data in it's RX FIFO.
491 * It checks what interrupts are pending and services them, including
492 * receiving serial data.
493 */
494static void rp_handle_port(struct r_port *info)
495{
496 CHANNEL_t *cp;
497 struct tty_struct *tty;
498 unsigned int IntMask, ChanStatus;
499
500 if (!info)
501 return;
502
Alan Cox21bed702009-01-02 13:48:23 +0000503 if ((info->port.flags & ASYNC_INITIALIZED) == 0) {
Jiri Slaby68562b72008-02-07 00:16:33 -0800504 printk(KERN_WARNING "rp: WARNING: rp_handle_port called with "
505 "info->flags & NOT_INIT\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700506 return;
507 }
Alan Cox47b01b32009-01-02 13:48:30 +0000508 tty = tty_port_tty_get(&info->port);
509 if (!tty) {
Jiri Slaby68562b72008-02-07 00:16:33 -0800510 printk(KERN_WARNING "rp: WARNING: rp_handle_port called with "
Alan Cox47b01b32009-01-02 13:48:30 +0000511 "tty==NULL\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700512 return;
513 }
514 cp = &info->channel;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700515
516 IntMask = sGetChanIntID(cp) & info->intmask;
517#ifdef ROCKET_DEBUG_INTR
Jiri Slaby68562b72008-02-07 00:16:33 -0800518 printk(KERN_INFO "rp_interrupt %02x...\n", IntMask);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700519#endif
520 ChanStatus = sGetChanStatus(cp);
521 if (IntMask & RXF_TRIG) { /* Rx FIFO trigger level */
522 rp_do_receive(info, tty, cp, ChanStatus);
523 }
524 if (IntMask & DELTA_CD) { /* CD change */
525#if (defined(ROCKET_DEBUG_OPEN) || defined(ROCKET_DEBUG_INTR) || defined(ROCKET_DEBUG_HANGUP))
Jiri Slaby68562b72008-02-07 00:16:33 -0800526 printk(KERN_INFO "ttyR%d CD now %s...\n", info->line,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700527 (ChanStatus & CD_ACT) ? "on" : "off");
528#endif
529 if (!(ChanStatus & CD_ACT) && info->cd_status) {
530#ifdef ROCKET_DEBUG_HANGUP
531 printk(KERN_INFO "CD drop, calling hangup.\n");
532#endif
533 tty_hangup(tty);
534 }
535 info->cd_status = (ChanStatus & CD_ACT) ? 1 : 0;
Alan Coxe60a1082008-07-16 21:56:18 +0100536 wake_up_interruptible(&info->port.open_wait);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700537 }
538#ifdef ROCKET_DEBUG_INTR
539 if (IntMask & DELTA_CTS) { /* CTS change */
540 printk(KERN_INFO "CTS change...\n");
541 }
542 if (IntMask & DELTA_DSR) { /* DSR change */
543 printk(KERN_INFO "DSR change...\n");
544 }
545#endif
Alan Cox47b01b32009-01-02 13:48:30 +0000546 tty_kref_put(tty);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700547}
548
549/*
550 * The top level polling routine. Repeats every 1/100 HZ (10ms).
551 */
552static void rp_do_poll(unsigned long dummy)
553{
554 CONTROLLER_t *ctlp;
Jiri Slaby6c0286b2007-10-18 03:06:29 -0700555 int ctrl, aiop, ch, line;
556 unsigned int xmitmask, i;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700557 unsigned int CtlMask;
558 unsigned char AiopMask;
559 Word_t bit;
560
561 /* Walk through all the boards (ctrl's) */
562 for (ctrl = 0; ctrl < max_board; ctrl++) {
563 if (rcktpt_io_addr[ctrl] <= 0)
564 continue;
565
566 /* Get a ptr to the board's control struct */
567 ctlp = sCtlNumToCtlPtr(ctrl);
568
Robert P. J. Day3a4fa0a2007-10-19 23:10:43 +0200569 /* Get the interrupt status from the board */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700570#ifdef CONFIG_PCI
571 if (ctlp->BusType == isPCI)
572 CtlMask = sPCIGetControllerIntStatus(ctlp);
573 else
574#endif
575 CtlMask = sGetControllerIntStatus(ctlp);
576
577 /* Check if any AIOP read bits are set */
578 for (aiop = 0; CtlMask; aiop++) {
579 bit = ctlp->AiopIntrBits[aiop];
580 if (CtlMask & bit) {
581 CtlMask &= ~bit;
582 AiopMask = sGetAiopIntStatus(ctlp, aiop);
583
584 /* Check if any port read bits are set */
585 for (ch = 0; AiopMask; AiopMask >>= 1, ch++) {
586 if (AiopMask & 1) {
587
588 /* Get the line number (/dev/ttyRx number). */
589 /* Read the data from the port. */
590 line = GetLineNumber(ctrl, aiop, ch);
591 rp_handle_port(rp_table[line]);
592 }
593 }
594 }
595 }
596
597 xmitmask = xmit_flags[ctrl];
598
599 /*
600 * xmit_flags contains bit-significant flags, indicating there is data
601 * to xmit on the port. Bit 0 is port 0 on this board, bit 1 is port
602 * 1, ... (32 total possible). The variable i has the aiop and ch
603 * numbers encoded in it (port 0-7 are aiop0, 8-15 are aiop1, etc).
604 */
605 if (xmitmask) {
606 for (i = 0; i < rocketModel[ctrl].numPorts; i++) {
607 if (xmitmask & (1 << i)) {
608 aiop = (i & 0x18) >> 3;
609 ch = i & 0x07;
610 line = GetLineNumber(ctrl, aiop, ch);
611 rp_do_transmit(rp_table[line]);
612 }
613 }
614 }
615 }
616
617 /*
618 * Reset the timer so we get called at the next clock tick (10ms).
619 */
620 if (atomic_read(&rp_num_ports_open))
621 mod_timer(&rocket_timer, jiffies + POLL_PERIOD);
622}
623
624/*
625 * Initializes the r_port structure for a port, as well as enabling the port on
626 * the board.
627 * Inputs: board, aiop, chan numbers
628 */
629static void init_r_port(int board, int aiop, int chan, struct pci_dev *pci_dev)
630{
631 unsigned rocketMode;
632 struct r_port *info;
633 int line;
634 CONTROLLER_T *ctlp;
635
636 /* Get the next available line number */
637 line = SetLineNumber(board, aiop, chan);
638
639 ctlp = sCtlNumToCtlPtr(board);
640
641 /* Get a r_port struct for the port, fill it in and save it globally, indexed by line number */
Yoann Padioleaudd00cc42007-07-19 01:49:03 -0700642 info = kzalloc(sizeof (struct r_port), GFP_KERNEL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700643 if (!info) {
Jiri Slaby68562b72008-02-07 00:16:33 -0800644 printk(KERN_ERR "Couldn't allocate info struct for line #%d\n",
645 line);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700646 return;
647 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700648
649 info->magic = RPORT_MAGIC;
650 info->line = line;
651 info->ctlp = ctlp;
652 info->board = board;
653 info->aiop = aiop;
654 info->chan = chan;
Alan Cox31f35932009-01-02 13:45:05 +0000655 tty_port_init(&info->port);
656 info->port.ops = &rocket_port_ops;
Jiri Slaby8cf5a8c2007-10-18 03:06:25 -0700657 init_completion(&info->close_wait);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700658 info->flags &= ~ROCKET_MODE_MASK;
659 switch (pc104[board][line]) {
660 case 422:
661 info->flags |= ROCKET_MODE_RS422;
662 break;
663 case 485:
664 info->flags |= ROCKET_MODE_RS485;
665 break;
666 case 232:
667 default:
668 info->flags |= ROCKET_MODE_RS232;
669 break;
670 }
671
672 info->intmask = RXF_TRIG | TXFIFO_MT | SRC_INT | DELTA_CD | DELTA_CTS | DELTA_DSR;
673 if (sInitChan(ctlp, &info->channel, aiop, chan) == 0) {
Jiri Slaby68562b72008-02-07 00:16:33 -0800674 printk(KERN_ERR "RocketPort sInitChan(%d, %d, %d) failed!\n",
675 board, aiop, chan);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700676 kfree(info);
677 return;
678 }
679
680 rocketMode = info->flags & ROCKET_MODE_MASK;
681
682 if ((info->flags & ROCKET_RTS_TOGGLE) || (rocketMode == ROCKET_MODE_RS485))
683 sEnRTSToggle(&info->channel);
684 else
685 sDisRTSToggle(&info->channel);
686
687 if (ctlp->boardType == ROCKET_TYPE_PC104) {
688 switch (rocketMode) {
689 case ROCKET_MODE_RS485:
690 sSetInterfaceMode(&info->channel, InterfaceModeRS485);
691 break;
692 case ROCKET_MODE_RS422:
693 sSetInterfaceMode(&info->channel, InterfaceModeRS422);
694 break;
695 case ROCKET_MODE_RS232:
696 default:
697 if (info->flags & ROCKET_RTS_TOGGLE)
698 sSetInterfaceMode(&info->channel, InterfaceModeRS232T);
699 else
700 sSetInterfaceMode(&info->channel, InterfaceModeRS232);
701 break;
702 }
703 }
704 spin_lock_init(&info->slock);
Matthias Kaehlcke69f545e2007-05-08 00:32:00 -0700705 mutex_init(&info->write_mtx);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700706 rp_table[line] = info;
Jiri Slabyac6aec22007-10-18 03:06:26 -0700707 tty_register_device(rocket_driver, line, pci_dev ? &pci_dev->dev :
708 NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700709}
710
711/*
712 * Configures a rocketport port according to its termio settings. Called from
713 * user mode into the driver (exception handler). *info CD manipulation is spinlock protected.
714 */
Alan Cox47b01b32009-01-02 13:48:30 +0000715static void configure_r_port(struct tty_struct *tty, struct r_port *info,
Alan Cox606d0992006-12-08 02:38:45 -0800716 struct ktermios *old_termios)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700717{
718 unsigned cflag;
719 unsigned long flags;
720 unsigned rocketMode;
721 int bits, baud, divisor;
722 CHANNEL_t *cp;
Alan Cox47b01b32009-01-02 13:48:30 +0000723 struct ktermios *t = tty->termios;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700724
Linus Torvalds1da177e2005-04-16 15:20:36 -0700725 cp = &info->channel;
Alan Cox6df35262008-02-08 04:18:45 -0800726 cflag = t->c_cflag;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700727
728 /* Byte size and parity */
729 if ((cflag & CSIZE) == CS8) {
730 sSetData8(cp);
731 bits = 10;
732 } else {
733 sSetData7(cp);
734 bits = 9;
735 }
736 if (cflag & CSTOPB) {
737 sSetStop2(cp);
738 bits++;
739 } else {
740 sSetStop1(cp);
741 }
742
743 if (cflag & PARENB) {
744 sEnParity(cp);
745 bits++;
746 if (cflag & PARODD) {
747 sSetOddParity(cp);
748 } else {
749 sSetEvenParity(cp);
750 }
751 } else {
752 sDisParity(cp);
753 }
754
755 /* baud rate */
Alan Cox47b01b32009-01-02 13:48:30 +0000756 baud = tty_get_baud_rate(tty);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700757 if (!baud)
758 baud = 9600;
759 divisor = ((rp_baud_base[info->board] + (baud >> 1)) / baud) - 1;
760 if ((divisor >= 8192 || divisor < 0) && old_termios) {
Alan Cox6df35262008-02-08 04:18:45 -0800761 baud = tty_termios_baud_rate(old_termios);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700762 if (!baud)
763 baud = 9600;
764 divisor = (rp_baud_base[info->board] / baud) - 1;
765 }
766 if (divisor >= 8192 || divisor < 0) {
767 baud = 9600;
768 divisor = (rp_baud_base[info->board] / baud) - 1;
769 }
770 info->cps = baud / bits;
771 sSetBaud(cp, divisor);
772
Alan Cox6df35262008-02-08 04:18:45 -0800773 /* FIXME: Should really back compute a baud rate from the divisor */
Alan Cox47b01b32009-01-02 13:48:30 +0000774 tty_encode_baud_rate(tty, baud, baud);
Alan Cox6df35262008-02-08 04:18:45 -0800775
Linus Torvalds1da177e2005-04-16 15:20:36 -0700776 if (cflag & CRTSCTS) {
777 info->intmask |= DELTA_CTS;
778 sEnCTSFlowCtl(cp);
779 } else {
780 info->intmask &= ~DELTA_CTS;
781 sDisCTSFlowCtl(cp);
782 }
783 if (cflag & CLOCAL) {
784 info->intmask &= ~DELTA_CD;
785 } else {
786 spin_lock_irqsave(&info->slock, flags);
787 if (sGetChanStatus(cp) & CD_ACT)
788 info->cd_status = 1;
789 else
790 info->cd_status = 0;
791 info->intmask |= DELTA_CD;
792 spin_unlock_irqrestore(&info->slock, flags);
793 }
794
795 /*
796 * Handle software flow control in the board
797 */
798#ifdef ROCKET_SOFT_FLOW
Alan Cox47b01b32009-01-02 13:48:30 +0000799 if (I_IXON(tty)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700800 sEnTxSoftFlowCtl(cp);
Alan Cox47b01b32009-01-02 13:48:30 +0000801 if (I_IXANY(tty)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700802 sEnIXANY(cp);
803 } else {
804 sDisIXANY(cp);
805 }
Alan Cox47b01b32009-01-02 13:48:30 +0000806 sSetTxXONChar(cp, START_CHAR(tty));
807 sSetTxXOFFChar(cp, STOP_CHAR(tty));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700808 } else {
809 sDisTxSoftFlowCtl(cp);
810 sDisIXANY(cp);
811 sClrTxXOFF(cp);
812 }
813#endif
814
815 /*
816 * Set up ignore/read mask words
817 */
818 info->read_status_mask = STMRCVROVRH | 0xFF;
Alan Cox47b01b32009-01-02 13:48:30 +0000819 if (I_INPCK(tty))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700820 info->read_status_mask |= STMFRAMEH | STMPARITYH;
Alan Cox47b01b32009-01-02 13:48:30 +0000821 if (I_BRKINT(tty) || I_PARMRK(tty))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700822 info->read_status_mask |= STMBREAKH;
823
824 /*
825 * Characters to ignore
826 */
827 info->ignore_status_mask = 0;
Alan Cox47b01b32009-01-02 13:48:30 +0000828 if (I_IGNPAR(tty))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700829 info->ignore_status_mask |= STMFRAMEH | STMPARITYH;
Alan Cox47b01b32009-01-02 13:48:30 +0000830 if (I_IGNBRK(tty)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700831 info->ignore_status_mask |= STMBREAKH;
832 /*
833 * If we're ignoring parity and break indicators,
834 * ignore overruns too. (For real raw support).
835 */
Alan Cox47b01b32009-01-02 13:48:30 +0000836 if (I_IGNPAR(tty))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700837 info->ignore_status_mask |= STMRCVROVRH;
838 }
839
840 rocketMode = info->flags & ROCKET_MODE_MASK;
841
842 if ((info->flags & ROCKET_RTS_TOGGLE)
843 || (rocketMode == ROCKET_MODE_RS485))
844 sEnRTSToggle(cp);
845 else
846 sDisRTSToggle(cp);
847
848 sSetRTS(&info->channel);
849
850 if (cp->CtlP->boardType == ROCKET_TYPE_PC104) {
851 switch (rocketMode) {
852 case ROCKET_MODE_RS485:
853 sSetInterfaceMode(cp, InterfaceModeRS485);
854 break;
855 case ROCKET_MODE_RS422:
856 sSetInterfaceMode(cp, InterfaceModeRS422);
857 break;
858 case ROCKET_MODE_RS232:
859 default:
860 if (info->flags & ROCKET_RTS_TOGGLE)
861 sSetInterfaceMode(cp, InterfaceModeRS232T);
862 else
863 sSetInterfaceMode(cp, InterfaceModeRS232);
864 break;
865 }
866 }
867}
868
Alan Cox31f35932009-01-02 13:45:05 +0000869static int carrier_raised(struct tty_port *port)
870{
871 struct r_port *info = container_of(port, struct r_port, port);
872 return (sGetChanStatusLo(&info->channel) & CD_ACT) ? 1 : 0;
873}
874
Alan Coxfcc8ac12009-06-11 12:24:17 +0100875static void dtr_rts(struct tty_port *port, int on)
Alan Cox5d951fb2009-01-02 13:45:19 +0000876{
877 struct r_port *info = container_of(port, struct r_port, port);
Alan Coxfcc8ac12009-06-11 12:24:17 +0100878 if (on) {
879 sSetDTR(&info->channel);
880 sSetRTS(&info->channel);
881 } else {
882 sClrDTR(&info->channel);
883 sClrRTS(&info->channel);
884 }
Alan Cox5d951fb2009-01-02 13:45:19 +0000885}
886
Linus Torvalds1da177e2005-04-16 15:20:36 -0700887/*
888 * Exception handler that opens a serial port. Creates xmit_buf storage, fills in
889 * port's r_port struct. Initializes the port hardware.
890 */
891static int rp_open(struct tty_struct *tty, struct file *filp)
892{
893 struct r_port *info;
Alan Coxfba85e02009-01-02 13:48:39 +0000894 struct tty_port *port;
Jiri Slaby410235f2012-03-05 14:52:01 +0100895 int retval;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700896 CHANNEL_t *cp;
897 unsigned long page;
898
Jiri Slaby410235f2012-03-05 14:52:01 +0100899 info = rp_table[tty->index];
900 if (info == NULL)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700901 return -ENXIO;
Alan Coxfba85e02009-01-02 13:48:39 +0000902 port = &info->port;
903
Linus Torvalds1da177e2005-04-16 15:20:36 -0700904 page = __get_free_page(GFP_KERNEL);
905 if (!page)
906 return -ENOMEM;
907
Alan Coxfba85e02009-01-02 13:48:39 +0000908 if (port->flags & ASYNC_CLOSING) {
Jiri Slaby8cf5a8c2007-10-18 03:06:25 -0700909 retval = wait_for_completion_interruptible(&info->close_wait);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700910 free_page(page);
Jiri Slaby8cf5a8c2007-10-18 03:06:25 -0700911 if (retval)
912 return retval;
Alan Coxfba85e02009-01-02 13:48:39 +0000913 return ((port->flags & ASYNC_HUP_NOTIFY) ? -EAGAIN : -ERESTARTSYS);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700914 }
915
916 /*
917 * We must not sleep from here until the port is marked fully in use.
918 */
919 if (info->xmit_buf)
920 free_page(page);
921 else
922 info->xmit_buf = (unsigned char *) page;
923
924 tty->driver_data = info;
Alan Coxfba85e02009-01-02 13:48:39 +0000925 tty_port_tty_set(port, tty);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700926
Alan Coxfba85e02009-01-02 13:48:39 +0000927 if (port->count++ == 0) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700928 atomic_inc(&rp_num_ports_open);
929
930#ifdef ROCKET_DEBUG_OPEN
Jiri Slaby68562b72008-02-07 00:16:33 -0800931 printk(KERN_INFO "rocket mod++ = %d...\n",
932 atomic_read(&rp_num_ports_open));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700933#endif
934 }
935#ifdef ROCKET_DEBUG_OPEN
Alan Coxe60a1082008-07-16 21:56:18 +0100936 printk(KERN_INFO "rp_open ttyR%d, count=%d\n", info->line, info->port.count);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700937#endif
938
939 /*
940 * Info->count is now 1; so it's safe to sleep now.
941 */
Jiri Slabya391ad02009-06-11 12:40:17 +0100942 if (!test_bit(ASYNCB_INITIALIZED, &port->flags)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700943 cp = &info->channel;
944 sSetRxTrigger(cp, TRIG_1);
945 if (sGetChanStatus(cp) & CD_ACT)
946 info->cd_status = 1;
947 else
948 info->cd_status = 0;
949 sDisRxStatusMode(cp);
950 sFlushRxFIFO(cp);
951 sFlushTxFIFO(cp);
952
953 sEnInterrupts(cp, (TXINT_EN | MCINT_EN | RXINT_EN | SRCINT_EN | CHANINT_EN));
954 sSetRxTrigger(cp, TRIG_1);
955
956 sGetChanStatus(cp);
957 sDisRxStatusMode(cp);
958 sClrTxXOFF(cp);
959
960 sDisCTSFlowCtl(cp);
961 sDisTxSoftFlowCtl(cp);
962
963 sEnRxFIFO(cp);
964 sEnTransmit(cp);
965
Jiri Slabya391ad02009-06-11 12:40:17 +0100966 set_bit(ASYNCB_INITIALIZED, &info->port.flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700967
968 /*
969 * Set up the tty->alt_speed kludge
970 */
971 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_HI)
Alan Cox47b01b32009-01-02 13:48:30 +0000972 tty->alt_speed = 57600;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700973 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_VHI)
Alan Cox47b01b32009-01-02 13:48:30 +0000974 tty->alt_speed = 115200;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700975 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_SHI)
Alan Cox47b01b32009-01-02 13:48:30 +0000976 tty->alt_speed = 230400;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700977 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_WARP)
Alan Cox47b01b32009-01-02 13:48:30 +0000978 tty->alt_speed = 460800;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700979
Alan Cox47b01b32009-01-02 13:48:30 +0000980 configure_r_port(tty, info, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700981 if (tty->termios->c_cflag & CBAUD) {
982 sSetDTR(cp);
983 sSetRTS(cp);
984 }
985 }
986 /* Starts (or resets) the maint polling loop */
987 mod_timer(&rocket_timer, jiffies + POLL_PERIOD);
988
Alan Coxfba85e02009-01-02 13:48:39 +0000989 retval = tty_port_block_til_ready(port, tty, filp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700990 if (retval) {
991#ifdef ROCKET_DEBUG_OPEN
992 printk(KERN_INFO "rp_open returning after block_til_ready with %d\n", retval);
993#endif
994 return retval;
995 }
996 return 0;
997}
998
999/*
Alan Coxe60a1082008-07-16 21:56:18 +01001000 * Exception handler that closes a serial port. info->port.count is considered critical.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001001 */
1002static void rp_close(struct tty_struct *tty, struct file *filp)
1003{
Alan Coxc9f19e92009-01-02 13:47:26 +00001004 struct r_port *info = tty->driver_data;
Alan Coxc1314a42009-01-02 13:48:17 +00001005 struct tty_port *port = &info->port;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001006 int timeout;
1007 CHANNEL_t *cp;
1008
1009 if (rocket_paranoia_check(info, "rp_close"))
1010 return;
1011
1012#ifdef ROCKET_DEBUG_OPEN
Alan Coxe60a1082008-07-16 21:56:18 +01001013 printk(KERN_INFO "rp_close ttyR%d, count = %d\n", info->line, info->port.count);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001014#endif
1015
Alan Coxfba85e02009-01-02 13:48:39 +00001016 if (tty_port_close_start(port, tty, filp) == 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001017 return;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001018
Alan Cox417b6e02010-06-01 22:52:45 +02001019 mutex_lock(&port->mutex);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001020 cp = &info->channel;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001021 /*
1022 * Before we drop DTR, make sure the UART transmitter
1023 * has completely drained; this is especially
1024 * important if there is a transmit FIFO!
1025 */
1026 timeout = (sGetTxCnt(cp) + 1) * HZ / info->cps;
1027 if (timeout == 0)
1028 timeout = 1;
1029 rp_wait_until_sent(tty, timeout);
1030 clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
1031
1032 sDisTransmit(cp);
1033 sDisInterrupts(cp, (TXINT_EN | MCINT_EN | RXINT_EN | SRCINT_EN | CHANINT_EN));
1034 sDisCTSFlowCtl(cp);
1035 sDisTxSoftFlowCtl(cp);
1036 sClrTxXOFF(cp);
1037 sFlushRxFIFO(cp);
1038 sFlushTxFIFO(cp);
1039 sClrRTS(cp);
1040 if (C_HUPCL(tty))
1041 sClrDTR(cp);
1042
Jiri Slabyf6de0c92008-02-07 00:16:33 -08001043 rp_flush_buffer(tty);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001044
1045 tty_ldisc_flush(tty);
1046
1047 clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
1048
Alan Coxfba85e02009-01-02 13:48:39 +00001049 /* We can't yet use tty_port_close_end as the buffer handling in this
1050 driver is a bit different to the usual */
1051
Alan Coxc1314a42009-01-02 13:48:17 +00001052 if (port->blocked_open) {
1053 if (port->close_delay) {
1054 msleep_interruptible(jiffies_to_msecs(port->close_delay));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001055 }
Alan Coxc1314a42009-01-02 13:48:17 +00001056 wake_up_interruptible(&port->open_wait);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001057 } else {
1058 if (info->xmit_buf) {
1059 free_page((unsigned long) info->xmit_buf);
1060 info->xmit_buf = NULL;
1061 }
1062 }
Alan Cox417b6e02010-06-01 22:52:45 +02001063 spin_lock_irq(&port->lock);
Alan Cox21bed702009-01-02 13:48:23 +00001064 info->port.flags &= ~(ASYNC_INITIALIZED | ASYNC_CLOSING | ASYNC_NORMAL_ACTIVE);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001065 tty->closing = 0;
Alan Cox417b6e02010-06-01 22:52:45 +02001066 spin_unlock_irq(&port->lock);
1067 mutex_unlock(&port->mutex);
Alan Coxfba85e02009-01-02 13:48:39 +00001068 tty_port_tty_set(port, NULL);
Alan Cox417b6e02010-06-01 22:52:45 +02001069
Alan Coxfba85e02009-01-02 13:48:39 +00001070 wake_up_interruptible(&port->close_wait);
Jiri Slaby8cf5a8c2007-10-18 03:06:25 -07001071 complete_all(&info->close_wait);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001072 atomic_dec(&rp_num_ports_open);
1073
1074#ifdef ROCKET_DEBUG_OPEN
Jiri Slaby68562b72008-02-07 00:16:33 -08001075 printk(KERN_INFO "rocket mod-- = %d...\n",
1076 atomic_read(&rp_num_ports_open));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001077 printk(KERN_INFO "rp_close ttyR%d complete shutdown\n", info->line);
1078#endif
1079
1080}
1081
1082static void rp_set_termios(struct tty_struct *tty,
Alan Cox606d0992006-12-08 02:38:45 -08001083 struct ktermios *old_termios)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001084{
Alan Coxc9f19e92009-01-02 13:47:26 +00001085 struct r_port *info = tty->driver_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001086 CHANNEL_t *cp;
1087 unsigned cflag;
1088
1089 if (rocket_paranoia_check(info, "rp_set_termios"))
1090 return;
1091
1092 cflag = tty->termios->c_cflag;
1093
Linus Torvalds1da177e2005-04-16 15:20:36 -07001094 /*
1095 * This driver doesn't support CS5 or CS6
1096 */
1097 if (((cflag & CSIZE) == CS5) || ((cflag & CSIZE) == CS6))
1098 tty->termios->c_cflag =
1099 ((cflag & ~CSIZE) | (old_termios->c_cflag & CSIZE));
Alan Cox6df35262008-02-08 04:18:45 -08001100 /* Or CMSPAR */
1101 tty->termios->c_cflag &= ~CMSPAR;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001102
Alan Cox47b01b32009-01-02 13:48:30 +00001103 configure_r_port(tty, info, old_termios);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001104
1105 cp = &info->channel;
1106
1107 /* Handle transition to B0 status */
1108 if ((old_termios->c_cflag & CBAUD) && !(tty->termios->c_cflag & CBAUD)) {
1109 sClrDTR(cp);
1110 sClrRTS(cp);
1111 }
1112
1113 /* Handle transition away from B0 status */
1114 if (!(old_termios->c_cflag & CBAUD) && (tty->termios->c_cflag & CBAUD)) {
1115 if (!tty->hw_stopped || !(tty->termios->c_cflag & CRTSCTS))
1116 sSetRTS(cp);
1117 sSetDTR(cp);
1118 }
1119
1120 if ((old_termios->c_cflag & CRTSCTS) && !(tty->termios->c_cflag & CRTSCTS)) {
1121 tty->hw_stopped = 0;
1122 rp_start(tty);
1123 }
1124}
1125
Alan Cox9e989662008-07-22 11:18:03 +01001126static int rp_break(struct tty_struct *tty, int break_state)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001127{
Alan Coxc9f19e92009-01-02 13:47:26 +00001128 struct r_port *info = tty->driver_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001129 unsigned long flags;
1130
1131 if (rocket_paranoia_check(info, "rp_break"))
Alan Cox9e989662008-07-22 11:18:03 +01001132 return -EINVAL;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001133
1134 spin_lock_irqsave(&info->slock, flags);
1135 if (break_state == -1)
1136 sSendBreak(&info->channel);
1137 else
1138 sClrBreak(&info->channel);
1139 spin_unlock_irqrestore(&info->slock, flags);
Alan Cox9e989662008-07-22 11:18:03 +01001140 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001141}
1142
1143/*
1144 * sGetChanRI used to be a macro in rocket_int.h. When the functionality for
1145 * the UPCI boards was added, it was decided to make this a function because
1146 * the macro was getting too complicated. All cases except the first one
1147 * (UPCIRingInd) are taken directly from the original macro.
1148 */
1149static int sGetChanRI(CHANNEL_T * ChP)
1150{
1151 CONTROLLER_t *CtlP = ChP->CtlP;
1152 int ChanNum = ChP->ChanNum;
1153 int RingInd = 0;
1154
1155 if (CtlP->UPCIRingInd)
1156 RingInd = !(sInB(CtlP->UPCIRingInd) & sBitMapSetTbl[ChanNum]);
1157 else if (CtlP->AltChanRingIndicator)
1158 RingInd = sInB((ByteIO_t) (ChP->ChanStat + 8)) & DSR_ACT;
1159 else if (CtlP->boardType == ROCKET_TYPE_PC104)
1160 RingInd = !(sInB(CtlP->AiopIO[3]) & sBitMapSetTbl[ChanNum]);
1161
1162 return RingInd;
1163}
1164
1165/********************************************************************************************/
1166/* Here are the routines used by rp_ioctl. These are all called from exception handlers. */
1167
1168/*
1169 * Returns the state of the serial modem control lines. These next 2 functions
1170 * are the way kernel versions > 2.5 handle modem control lines rather than IOCTLs.
1171 */
Alan Cox60b33c12011-02-14 16:26:14 +00001172static int rp_tiocmget(struct tty_struct *tty)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001173{
Alan Coxc9f19e92009-01-02 13:47:26 +00001174 struct r_port *info = tty->driver_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001175 unsigned int control, result, ChanStatus;
1176
1177 ChanStatus = sGetChanStatusLo(&info->channel);
1178 control = info->channel.TxControl[3];
1179 result = ((control & SET_RTS) ? TIOCM_RTS : 0) |
1180 ((control & SET_DTR) ? TIOCM_DTR : 0) |
1181 ((ChanStatus & CD_ACT) ? TIOCM_CAR : 0) |
1182 (sGetChanRI(&info->channel) ? TIOCM_RNG : 0) |
1183 ((ChanStatus & DSR_ACT) ? TIOCM_DSR : 0) |
1184 ((ChanStatus & CTS_ACT) ? TIOCM_CTS : 0);
1185
1186 return result;
1187}
1188
1189/*
1190 * Sets the modem control lines
1191 */
Alan Cox20b9d172011-02-14 16:26:50 +00001192static int rp_tiocmset(struct tty_struct *tty,
1193 unsigned int set, unsigned int clear)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001194{
Alan Coxc9f19e92009-01-02 13:47:26 +00001195 struct r_port *info = tty->driver_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001196
1197 if (set & TIOCM_RTS)
1198 info->channel.TxControl[3] |= SET_RTS;
1199 if (set & TIOCM_DTR)
1200 info->channel.TxControl[3] |= SET_DTR;
1201 if (clear & TIOCM_RTS)
1202 info->channel.TxControl[3] &= ~SET_RTS;
1203 if (clear & TIOCM_DTR)
1204 info->channel.TxControl[3] &= ~SET_DTR;
1205
Al Viro457fb602008-03-19 16:27:48 +00001206 out32(info->channel.IndexAddr, info->channel.TxControl);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001207 return 0;
1208}
1209
1210static int get_config(struct r_port *info, struct rocket_config __user *retinfo)
1211{
1212 struct rocket_config tmp;
1213
1214 if (!retinfo)
1215 return -EFAULT;
1216 memset(&tmp, 0, sizeof (tmp));
Alan Cox417b6e02010-06-01 22:52:45 +02001217 mutex_lock(&info->port.mutex);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001218 tmp.line = info->line;
1219 tmp.flags = info->flags;
Alan Cox44b7d1b2008-07-16 21:57:18 +01001220 tmp.close_delay = info->port.close_delay;
1221 tmp.closing_wait = info->port.closing_wait;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001222 tmp.port = rcktpt_io_addr[(info->line >> 5) & 3];
Alan Cox417b6e02010-06-01 22:52:45 +02001223 mutex_unlock(&info->port.mutex);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001224
1225 if (copy_to_user(retinfo, &tmp, sizeof (*retinfo)))
1226 return -EFAULT;
1227 return 0;
1228}
1229
Alan Cox47b01b32009-01-02 13:48:30 +00001230static int set_config(struct tty_struct *tty, struct r_port *info,
1231 struct rocket_config __user *new_info)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001232{
1233 struct rocket_config new_serial;
1234
1235 if (copy_from_user(&new_serial, new_info, sizeof (new_serial)))
1236 return -EFAULT;
1237
Alan Cox417b6e02010-06-01 22:52:45 +02001238 mutex_lock(&info->port.mutex);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001239 if (!capable(CAP_SYS_ADMIN))
1240 {
Alan Cox417b6e02010-06-01 22:52:45 +02001241 if ((new_serial.flags & ~ROCKET_USR_MASK) != (info->flags & ~ROCKET_USR_MASK)) {
1242 mutex_unlock(&info->port.mutex);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001243 return -EPERM;
Alan Cox417b6e02010-06-01 22:52:45 +02001244 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001245 info->flags = ((info->flags & ~ROCKET_USR_MASK) | (new_serial.flags & ROCKET_USR_MASK));
Alan Cox47b01b32009-01-02 13:48:30 +00001246 configure_r_port(tty, info, NULL);
Dan Carpenter49bf7ea2010-08-11 20:00:09 +02001247 mutex_unlock(&info->port.mutex);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001248 return 0;
1249 }
1250
1251 info->flags = ((info->flags & ~ROCKET_FLAGS) | (new_serial.flags & ROCKET_FLAGS));
Alan Cox44b7d1b2008-07-16 21:57:18 +01001252 info->port.close_delay = new_serial.close_delay;
1253 info->port.closing_wait = new_serial.closing_wait;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001254
1255 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_HI)
Alan Cox47b01b32009-01-02 13:48:30 +00001256 tty->alt_speed = 57600;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001257 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_VHI)
Alan Cox47b01b32009-01-02 13:48:30 +00001258 tty->alt_speed = 115200;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001259 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_SHI)
Alan Cox47b01b32009-01-02 13:48:30 +00001260 tty->alt_speed = 230400;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001261 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_WARP)
Alan Cox47b01b32009-01-02 13:48:30 +00001262 tty->alt_speed = 460800;
Alan Cox417b6e02010-06-01 22:52:45 +02001263 mutex_unlock(&info->port.mutex);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001264
Alan Cox47b01b32009-01-02 13:48:30 +00001265 configure_r_port(tty, info, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001266 return 0;
1267}
1268
1269/*
1270 * This function fills in a rocket_ports struct with information
1271 * about what boards/ports are in the system. This info is passed
1272 * to user space. See setrocket.c where the info is used to create
1273 * the /dev/ttyRx ports.
1274 */
1275static int get_ports(struct r_port *info, struct rocket_ports __user *retports)
1276{
1277 struct rocket_ports tmp;
1278 int board;
1279
1280 if (!retports)
1281 return -EFAULT;
1282 memset(&tmp, 0, sizeof (tmp));
1283 tmp.tty_major = rocket_driver->major;
1284
1285 for (board = 0; board < 4; board++) {
1286 tmp.rocketModel[board].model = rocketModel[board].model;
1287 strcpy(tmp.rocketModel[board].modelString, rocketModel[board].modelString);
1288 tmp.rocketModel[board].numPorts = rocketModel[board].numPorts;
1289 tmp.rocketModel[board].loadrm2 = rocketModel[board].loadrm2;
1290 tmp.rocketModel[board].startingPortNumber = rocketModel[board].startingPortNumber;
1291 }
1292 if (copy_to_user(retports, &tmp, sizeof (*retports)))
1293 return -EFAULT;
1294 return 0;
1295}
1296
1297static int reset_rm2(struct r_port *info, void __user *arg)
1298{
1299 int reset;
1300
Alan Cox4129a6452008-02-08 04:18:45 -08001301 if (!capable(CAP_SYS_ADMIN))
1302 return -EPERM;
1303
Linus Torvalds1da177e2005-04-16 15:20:36 -07001304 if (copy_from_user(&reset, arg, sizeof (int)))
1305 return -EFAULT;
1306 if (reset)
1307 reset = 1;
1308
1309 if (rcktpt_type[info->board] != ROCKET_TYPE_MODEMII &&
1310 rcktpt_type[info->board] != ROCKET_TYPE_MODEMIII)
1311 return -EINVAL;
1312
1313 if (info->ctlp->BusType == isISA)
1314 sModemReset(info->ctlp, info->chan, reset);
1315 else
1316 sPCIModemReset(info->ctlp, info->chan, reset);
1317
1318 return 0;
1319}
1320
1321static int get_version(struct r_port *info, struct rocket_version __user *retvers)
1322{
1323 if (copy_to_user(retvers, &driver_version, sizeof (*retvers)))
1324 return -EFAULT;
1325 return 0;
1326}
1327
1328/* IOCTL call handler into the driver */
Alan Cox6caa76b2011-02-14 16:27:22 +00001329static int rp_ioctl(struct tty_struct *tty,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001330 unsigned int cmd, unsigned long arg)
1331{
Alan Coxc9f19e92009-01-02 13:47:26 +00001332 struct r_port *info = tty->driver_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001333 void __user *argp = (void __user *)arg;
Alan Coxbdf183a2008-04-30 00:53:21 -07001334 int ret = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001335
1336 if (cmd != RCKP_GET_PORTS && rocket_paranoia_check(info, "rp_ioctl"))
1337 return -ENXIO;
1338
1339 switch (cmd) {
1340 case RCKP_GET_STRUCT:
1341 if (copy_to_user(argp, info, sizeof (struct r_port)))
Alan Coxbdf183a2008-04-30 00:53:21 -07001342 ret = -EFAULT;
1343 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001344 case RCKP_GET_CONFIG:
Alan Coxbdf183a2008-04-30 00:53:21 -07001345 ret = get_config(info, argp);
1346 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001347 case RCKP_SET_CONFIG:
Alan Cox47b01b32009-01-02 13:48:30 +00001348 ret = set_config(tty, info, argp);
Alan Coxbdf183a2008-04-30 00:53:21 -07001349 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001350 case RCKP_GET_PORTS:
Alan Coxbdf183a2008-04-30 00:53:21 -07001351 ret = get_ports(info, argp);
1352 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001353 case RCKP_RESET_RM2:
Alan Coxbdf183a2008-04-30 00:53:21 -07001354 ret = reset_rm2(info, argp);
1355 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001356 case RCKP_GET_VERSION:
Alan Coxbdf183a2008-04-30 00:53:21 -07001357 ret = get_version(info, argp);
1358 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001359 default:
Alan Coxbdf183a2008-04-30 00:53:21 -07001360 ret = -ENOIOCTLCMD;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001361 }
Alan Coxbdf183a2008-04-30 00:53:21 -07001362 return ret;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001363}
1364
1365static void rp_send_xchar(struct tty_struct *tty, char ch)
1366{
Alan Coxc9f19e92009-01-02 13:47:26 +00001367 struct r_port *info = tty->driver_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001368 CHANNEL_t *cp;
1369
1370 if (rocket_paranoia_check(info, "rp_send_xchar"))
1371 return;
1372
1373 cp = &info->channel;
1374 if (sGetTxCnt(cp))
1375 sWriteTxPrioByte(cp, ch);
1376 else
1377 sWriteTxByte(sGetTxRxDataIO(cp), ch);
1378}
1379
1380static void rp_throttle(struct tty_struct *tty)
1381{
Alan Coxc9f19e92009-01-02 13:47:26 +00001382 struct r_port *info = tty->driver_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001383
1384#ifdef ROCKET_DEBUG_THROTTLE
1385 printk(KERN_INFO "throttle %s: %d....\n", tty->name,
1386 tty->ldisc.chars_in_buffer(tty));
1387#endif
1388
1389 if (rocket_paranoia_check(info, "rp_throttle"))
1390 return;
1391
Linus Torvalds1da177e2005-04-16 15:20:36 -07001392 if (I_IXOFF(tty))
1393 rp_send_xchar(tty, STOP_CHAR(tty));
1394
1395 sClrRTS(&info->channel);
1396}
1397
1398static void rp_unthrottle(struct tty_struct *tty)
1399{
Alan Coxc9f19e92009-01-02 13:47:26 +00001400 struct r_port *info = tty->driver_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001401#ifdef ROCKET_DEBUG_THROTTLE
1402 printk(KERN_INFO "unthrottle %s: %d....\n", tty->name,
1403 tty->ldisc.chars_in_buffer(tty));
1404#endif
1405
1406 if (rocket_paranoia_check(info, "rp_throttle"))
1407 return;
1408
Linus Torvalds1da177e2005-04-16 15:20:36 -07001409 if (I_IXOFF(tty))
1410 rp_send_xchar(tty, START_CHAR(tty));
1411
1412 sSetRTS(&info->channel);
1413}
1414
1415/*
1416 * ------------------------------------------------------------
1417 * rp_stop() and rp_start()
1418 *
1419 * This routines are called before setting or resetting tty->stopped.
1420 * They enable or disable transmitter interrupts, as necessary.
1421 * ------------------------------------------------------------
1422 */
1423static void rp_stop(struct tty_struct *tty)
1424{
Alan Coxc9f19e92009-01-02 13:47:26 +00001425 struct r_port *info = tty->driver_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001426
1427#ifdef ROCKET_DEBUG_FLOW
1428 printk(KERN_INFO "stop %s: %d %d....\n", tty->name,
1429 info->xmit_cnt, info->xmit_fifo_room);
1430#endif
1431
1432 if (rocket_paranoia_check(info, "rp_stop"))
1433 return;
1434
1435 if (sGetTxCnt(&info->channel))
1436 sDisTransmit(&info->channel);
1437}
1438
1439static void rp_start(struct tty_struct *tty)
1440{
Alan Coxc9f19e92009-01-02 13:47:26 +00001441 struct r_port *info = tty->driver_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001442
1443#ifdef ROCKET_DEBUG_FLOW
1444 printk(KERN_INFO "start %s: %d %d....\n", tty->name,
1445 info->xmit_cnt, info->xmit_fifo_room);
1446#endif
1447
1448 if (rocket_paranoia_check(info, "rp_stop"))
1449 return;
1450
1451 sEnTransmit(&info->channel);
1452 set_bit((info->aiop * 8) + info->chan,
1453 (void *) &xmit_flags[info->board]);
1454}
1455
1456/*
1457 * rp_wait_until_sent() --- wait until the transmitter is empty
1458 */
1459static void rp_wait_until_sent(struct tty_struct *tty, int timeout)
1460{
Alan Coxc9f19e92009-01-02 13:47:26 +00001461 struct r_port *info = tty->driver_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001462 CHANNEL_t *cp;
1463 unsigned long orig_jiffies;
1464 int check_time, exit_time;
1465 int txcnt;
1466
1467 if (rocket_paranoia_check(info, "rp_wait_until_sent"))
1468 return;
1469
1470 cp = &info->channel;
1471
1472 orig_jiffies = jiffies;
1473#ifdef ROCKET_DEBUG_WAIT_UNTIL_SENT
Jiri Slaby68562b72008-02-07 00:16:33 -08001474 printk(KERN_INFO "In RP_wait_until_sent(%d) (jiff=%lu)...\n", timeout,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001475 jiffies);
Jiri Slaby68562b72008-02-07 00:16:33 -08001476 printk(KERN_INFO "cps=%d...\n", info->cps);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001477#endif
1478 while (1) {
1479 txcnt = sGetTxCnt(cp);
1480 if (!txcnt) {
1481 if (sGetChanStatusLo(cp) & TXSHRMT)
1482 break;
1483 check_time = (HZ / info->cps) / 5;
1484 } else {
1485 check_time = HZ * txcnt / info->cps;
1486 }
1487 if (timeout) {
1488 exit_time = orig_jiffies + timeout - jiffies;
1489 if (exit_time <= 0)
1490 break;
1491 if (exit_time < check_time)
1492 check_time = exit_time;
1493 }
1494 if (check_time == 0)
1495 check_time = 1;
1496#ifdef ROCKET_DEBUG_WAIT_UNTIL_SENT
Jiri Slaby68562b72008-02-07 00:16:33 -08001497 printk(KERN_INFO "txcnt = %d (jiff=%lu,check=%d)...\n", txcnt,
1498 jiffies, check_time);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001499#endif
1500 msleep_interruptible(jiffies_to_msecs(check_time));
1501 if (signal_pending(current))
1502 break;
1503 }
Milind Arun Choudharycc0a8fb2007-05-08 00:30:52 -07001504 __set_current_state(TASK_RUNNING);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001505#ifdef ROCKET_DEBUG_WAIT_UNTIL_SENT
1506 printk(KERN_INFO "txcnt = %d (jiff=%lu)...done\n", txcnt, jiffies);
1507#endif
1508}
1509
1510/*
1511 * rp_hangup() --- called by tty_hangup() when a hangup is signaled.
1512 */
1513static void rp_hangup(struct tty_struct *tty)
1514{
1515 CHANNEL_t *cp;
Alan Coxc9f19e92009-01-02 13:47:26 +00001516 struct r_port *info = tty->driver_data;
Alan Cox417b6e02010-06-01 22:52:45 +02001517 unsigned long flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001518
1519 if (rocket_paranoia_check(info, "rp_hangup"))
1520 return;
1521
1522#if (defined(ROCKET_DEBUG_OPEN) || defined(ROCKET_DEBUG_HANGUP))
Jiri Slaby68562b72008-02-07 00:16:33 -08001523 printk(KERN_INFO "rp_hangup of ttyR%d...\n", info->line);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001524#endif
1525 rp_flush_buffer(tty);
Alan Cox417b6e02010-06-01 22:52:45 +02001526 spin_lock_irqsave(&info->port.lock, flags);
1527 if (info->port.flags & ASYNC_CLOSING) {
1528 spin_unlock_irqrestore(&info->port.lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001529 return;
Alan Cox417b6e02010-06-01 22:52:45 +02001530 }
Alan Coxe60a1082008-07-16 21:56:18 +01001531 if (info->port.count)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001532 atomic_dec(&rp_num_ports_open);
1533 clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
Alan Cox417b6e02010-06-01 22:52:45 +02001534 spin_unlock_irqrestore(&info->port.lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001535
Alan Coxfba85e02009-01-02 13:48:39 +00001536 tty_port_hangup(&info->port);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001537
1538 cp = &info->channel;
1539 sDisRxFIFO(cp);
1540 sDisTransmit(cp);
1541 sDisInterrupts(cp, (TXINT_EN | MCINT_EN | RXINT_EN | SRCINT_EN | CHANINT_EN));
1542 sDisCTSFlowCtl(cp);
1543 sDisTxSoftFlowCtl(cp);
1544 sClrTxXOFF(cp);
Alan Cox417b6e02010-06-01 22:52:45 +02001545 clear_bit(ASYNCB_INITIALIZED, &info->port.flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001546
Alan Coxe60a1082008-07-16 21:56:18 +01001547 wake_up_interruptible(&info->port.open_wait);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001548}
1549
1550/*
1551 * Exception handler - write char routine. The RocketPort driver uses a
1552 * double-buffering strategy, with the twist that if the in-memory CPU
1553 * buffer is empty, and there's space in the transmit FIFO, the
1554 * writing routines will write directly to transmit FIFO.
1555 * Write buffer and counters protected by spinlocks
1556 */
Alan Coxbbbbb962008-04-30 00:54:05 -07001557static int rp_put_char(struct tty_struct *tty, unsigned char ch)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001558{
Alan Coxc9f19e92009-01-02 13:47:26 +00001559 struct r_port *info = tty->driver_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001560 CHANNEL_t *cp;
1561 unsigned long flags;
1562
1563 if (rocket_paranoia_check(info, "rp_put_char"))
Alan Coxbbbbb962008-04-30 00:54:05 -07001564 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001565
Matthias Kaehlcke69f545e2007-05-08 00:32:00 -07001566 /*
1567 * Grab the port write mutex, locking out other processes that try to
1568 * write to this port
1569 */
1570 mutex_lock(&info->write_mtx);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001571
1572#ifdef ROCKET_DEBUG_WRITE
Jiri Slaby68562b72008-02-07 00:16:33 -08001573 printk(KERN_INFO "rp_put_char %c...\n", ch);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001574#endif
1575
1576 spin_lock_irqsave(&info->slock, flags);
1577 cp = &info->channel;
1578
1579 if (!tty->stopped && !tty->hw_stopped && info->xmit_fifo_room == 0)
1580 info->xmit_fifo_room = TXFIFO_SIZE - sGetTxCnt(cp);
1581
1582 if (tty->stopped || tty->hw_stopped || info->xmit_fifo_room == 0 || info->xmit_cnt != 0) {
1583 info->xmit_buf[info->xmit_head++] = ch;
1584 info->xmit_head &= XMIT_BUF_SIZE - 1;
1585 info->xmit_cnt++;
1586 set_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
1587 } else {
1588 sOutB(sGetTxRxDataIO(cp), ch);
1589 info->xmit_fifo_room--;
1590 }
1591 spin_unlock_irqrestore(&info->slock, flags);
Matthias Kaehlcke69f545e2007-05-08 00:32:00 -07001592 mutex_unlock(&info->write_mtx);
Alan Coxbbbbb962008-04-30 00:54:05 -07001593 return 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001594}
1595
1596/*
1597 * Exception handler - write routine, called when user app writes to the device.
Matthias Kaehlcke69f545e2007-05-08 00:32:00 -07001598 * A per port write mutex is used to protect from another process writing to
Linus Torvalds1da177e2005-04-16 15:20:36 -07001599 * this port at the same time. This other process could be running on the other CPU
1600 * or get control of the CPU if the copy_from_user() blocks due to a page fault (swapped out).
1601 * Spinlocks protect the info xmit members.
1602 */
1603static int rp_write(struct tty_struct *tty,
1604 const unsigned char *buf, int count)
1605{
Alan Coxc9f19e92009-01-02 13:47:26 +00001606 struct r_port *info = tty->driver_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001607 CHANNEL_t *cp;
1608 const unsigned char *b;
1609 int c, retval = 0;
1610 unsigned long flags;
1611
1612 if (count <= 0 || rocket_paranoia_check(info, "rp_write"))
1613 return 0;
1614
Satyam Sharma1e3e8d92007-07-15 23:40:07 -07001615 if (mutex_lock_interruptible(&info->write_mtx))
1616 return -ERESTARTSYS;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001617
1618#ifdef ROCKET_DEBUG_WRITE
Jiri Slaby68562b72008-02-07 00:16:33 -08001619 printk(KERN_INFO "rp_write %d chars...\n", count);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001620#endif
1621 cp = &info->channel;
1622
1623 if (!tty->stopped && !tty->hw_stopped && info->xmit_fifo_room < count)
1624 info->xmit_fifo_room = TXFIFO_SIZE - sGetTxCnt(cp);
1625
1626 /*
1627 * If the write queue for the port is empty, and there is FIFO space, stuff bytes
1628 * into FIFO. Use the write queue for temp storage.
1629 */
1630 if (!tty->stopped && !tty->hw_stopped && info->xmit_cnt == 0 && info->xmit_fifo_room > 0) {
1631 c = min(count, info->xmit_fifo_room);
1632 b = buf;
1633
1634 /* Push data into FIFO, 2 bytes at a time */
1635 sOutStrW(sGetTxRxDataIO(cp), (unsigned short *) b, c / 2);
1636
1637 /* If there is a byte remaining, write it */
1638 if (c & 1)
1639 sOutB(sGetTxRxDataIO(cp), b[c - 1]);
1640
1641 retval += c;
1642 buf += c;
1643 count -= c;
1644
1645 spin_lock_irqsave(&info->slock, flags);
1646 info->xmit_fifo_room -= c;
1647 spin_unlock_irqrestore(&info->slock, flags);
1648 }
1649
1650 /* If count is zero, we wrote it all and are done */
1651 if (!count)
1652 goto end;
1653
1654 /* Write remaining data into the port's xmit_buf */
1655 while (1) {
Alan Cox47b01b32009-01-02 13:48:30 +00001656 /* Hung up ? */
Jiri Slabya391ad02009-06-11 12:40:17 +01001657 if (!test_bit(ASYNCB_NORMAL_ACTIVE, &info->port.flags))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001658 goto end;
Harvey Harrison709107f2008-04-30 00:53:51 -07001659 c = min(count, XMIT_BUF_SIZE - info->xmit_cnt - 1);
1660 c = min(c, XMIT_BUF_SIZE - info->xmit_head);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001661 if (c <= 0)
1662 break;
1663
1664 b = buf;
1665 memcpy(info->xmit_buf + info->xmit_head, b, c);
1666
1667 spin_lock_irqsave(&info->slock, flags);
1668 info->xmit_head =
1669 (info->xmit_head + c) & (XMIT_BUF_SIZE - 1);
1670 info->xmit_cnt += c;
1671 spin_unlock_irqrestore(&info->slock, flags);
1672
1673 buf += c;
1674 count -= c;
1675 retval += c;
1676 }
1677
1678 if ((retval > 0) && !tty->stopped && !tty->hw_stopped)
1679 set_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
1680
1681end:
1682 if (info->xmit_cnt < WAKEUP_CHARS) {
1683 tty_wakeup(tty);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001684#ifdef ROCKETPORT_HAVE_POLL_WAIT
1685 wake_up_interruptible(&tty->poll_wait);
1686#endif
1687 }
Matthias Kaehlcke69f545e2007-05-08 00:32:00 -07001688 mutex_unlock(&info->write_mtx);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001689 return retval;
1690}
1691
1692/*
1693 * Return the number of characters that can be sent. We estimate
1694 * only using the in-memory transmit buffer only, and ignore the
1695 * potential space in the transmit FIFO.
1696 */
1697static int rp_write_room(struct tty_struct *tty)
1698{
Alan Coxc9f19e92009-01-02 13:47:26 +00001699 struct r_port *info = tty->driver_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001700 int ret;
1701
1702 if (rocket_paranoia_check(info, "rp_write_room"))
1703 return 0;
1704
1705 ret = XMIT_BUF_SIZE - info->xmit_cnt - 1;
1706 if (ret < 0)
1707 ret = 0;
1708#ifdef ROCKET_DEBUG_WRITE
Jiri Slaby68562b72008-02-07 00:16:33 -08001709 printk(KERN_INFO "rp_write_room returns %d...\n", ret);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001710#endif
1711 return ret;
1712}
1713
1714/*
1715 * Return the number of characters in the buffer. Again, this only
1716 * counts those characters in the in-memory transmit buffer.
1717 */
1718static int rp_chars_in_buffer(struct tty_struct *tty)
1719{
Alan Coxc9f19e92009-01-02 13:47:26 +00001720 struct r_port *info = tty->driver_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001721
1722 if (rocket_paranoia_check(info, "rp_chars_in_buffer"))
1723 return 0;
1724
Linus Torvalds1da177e2005-04-16 15:20:36 -07001725#ifdef ROCKET_DEBUG_WRITE
Jiri Slaby68562b72008-02-07 00:16:33 -08001726 printk(KERN_INFO "rp_chars_in_buffer returns %d...\n", info->xmit_cnt);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001727#endif
1728 return info->xmit_cnt;
1729}
1730
1731/*
1732 * Flushes the TX fifo for a port, deletes data in the xmit_buf stored in the
1733 * r_port struct for the port. Note that spinlock are used to protect info members,
1734 * do not call this function if the spinlock is already held.
1735 */
1736static void rp_flush_buffer(struct tty_struct *tty)
1737{
Alan Coxc9f19e92009-01-02 13:47:26 +00001738 struct r_port *info = tty->driver_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001739 CHANNEL_t *cp;
1740 unsigned long flags;
1741
1742 if (rocket_paranoia_check(info, "rp_flush_buffer"))
1743 return;
1744
1745 spin_lock_irqsave(&info->slock, flags);
1746 info->xmit_cnt = info->xmit_head = info->xmit_tail = 0;
1747 spin_unlock_irqrestore(&info->slock, flags);
1748
Linus Torvalds1da177e2005-04-16 15:20:36 -07001749#ifdef ROCKETPORT_HAVE_POLL_WAIT
1750 wake_up_interruptible(&tty->poll_wait);
1751#endif
1752 tty_wakeup(tty);
1753
1754 cp = &info->channel;
1755 sFlushTxFIFO(cp);
1756}
1757
1758#ifdef CONFIG_PCI
1759
Namhyung Kim6835a202010-12-07 23:27:41 +09001760static struct pci_device_id __devinitdata __used rocket_pci_ids[] = {
Jiri Slaby8d5916d2007-05-08 00:27:05 -07001761 { PCI_DEVICE(PCI_VENDOR_ID_RP, PCI_ANY_ID) },
1762 { }
1763};
1764MODULE_DEVICE_TABLE(pci, rocket_pci_ids);
1765
Linus Torvalds1da177e2005-04-16 15:20:36 -07001766/*
1767 * Called when a PCI card is found. Retrieves and stores model information,
1768 * init's aiopic and serial port hardware.
1769 * Inputs: i is the board number (0-n)
1770 */
Adrian Bunkf15313b2005-06-25 14:59:05 -07001771static __init int register_PCI(int i, struct pci_dev *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001772{
1773 int num_aiops, aiop, max_num_aiops, num_chan, chan;
1774 unsigned int aiopio[MAX_AIOPS_PER_BOARD];
Linus Torvalds1da177e2005-04-16 15:20:36 -07001775 CONTROLLER_t *ctlp;
1776
1777 int fast_clock = 0;
1778 int altChanRingIndicator = 0;
1779 int ports_per_aiop = 8;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001780 WordIO_t ConfigIO = 0;
1781 ByteIO_t UPCIRingInd = 0;
1782
1783 if (!dev || pci_enable_device(dev))
1784 return 0;
1785
1786 rcktpt_io_addr[i] = pci_resource_start(dev, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001787
1788 rcktpt_type[i] = ROCKET_TYPE_NORMAL;
1789 rocketModel[i].loadrm2 = 0;
1790 rocketModel[i].startingPortNumber = nextLineNumber;
1791
1792 /* Depending on the model, set up some config variables */
1793 switch (dev->device) {
1794 case PCI_DEVICE_ID_RP4QUAD:
Linus Torvalds1da177e2005-04-16 15:20:36 -07001795 max_num_aiops = 1;
1796 ports_per_aiop = 4;
1797 rocketModel[i].model = MODEL_RP4QUAD;
1798 strcpy(rocketModel[i].modelString, "RocketPort 4 port w/quad cable");
1799 rocketModel[i].numPorts = 4;
1800 break;
1801 case PCI_DEVICE_ID_RP8OCTA:
Linus Torvalds1da177e2005-04-16 15:20:36 -07001802 max_num_aiops = 1;
1803 rocketModel[i].model = MODEL_RP8OCTA;
1804 strcpy(rocketModel[i].modelString, "RocketPort 8 port w/octa cable");
1805 rocketModel[i].numPorts = 8;
1806 break;
1807 case PCI_DEVICE_ID_URP8OCTA:
Linus Torvalds1da177e2005-04-16 15:20:36 -07001808 max_num_aiops = 1;
1809 rocketModel[i].model = MODEL_UPCI_RP8OCTA;
1810 strcpy(rocketModel[i].modelString, "RocketPort UPCI 8 port w/octa cable");
1811 rocketModel[i].numPorts = 8;
1812 break;
1813 case PCI_DEVICE_ID_RP8INTF:
Linus Torvalds1da177e2005-04-16 15:20:36 -07001814 max_num_aiops = 1;
1815 rocketModel[i].model = MODEL_RP8INTF;
1816 strcpy(rocketModel[i].modelString, "RocketPort 8 port w/external I/F");
1817 rocketModel[i].numPorts = 8;
1818 break;
1819 case PCI_DEVICE_ID_URP8INTF:
Linus Torvalds1da177e2005-04-16 15:20:36 -07001820 max_num_aiops = 1;
1821 rocketModel[i].model = MODEL_UPCI_RP8INTF;
1822 strcpy(rocketModel[i].modelString, "RocketPort UPCI 8 port w/external I/F");
1823 rocketModel[i].numPorts = 8;
1824 break;
1825 case PCI_DEVICE_ID_RP8J:
Linus Torvalds1da177e2005-04-16 15:20:36 -07001826 max_num_aiops = 1;
1827 rocketModel[i].model = MODEL_RP8J;
1828 strcpy(rocketModel[i].modelString, "RocketPort 8 port w/RJ11 connectors");
1829 rocketModel[i].numPorts = 8;
1830 break;
1831 case PCI_DEVICE_ID_RP4J:
Linus Torvalds1da177e2005-04-16 15:20:36 -07001832 max_num_aiops = 1;
1833 ports_per_aiop = 4;
1834 rocketModel[i].model = MODEL_RP4J;
1835 strcpy(rocketModel[i].modelString, "RocketPort 4 port w/RJ45 connectors");
1836 rocketModel[i].numPorts = 4;
1837 break;
1838 case PCI_DEVICE_ID_RP8SNI:
Linus Torvalds1da177e2005-04-16 15:20:36 -07001839 max_num_aiops = 1;
1840 rocketModel[i].model = MODEL_RP8SNI;
1841 strcpy(rocketModel[i].modelString, "RocketPort 8 port w/ custom DB78");
1842 rocketModel[i].numPorts = 8;
1843 break;
1844 case PCI_DEVICE_ID_RP16SNI:
Linus Torvalds1da177e2005-04-16 15:20:36 -07001845 max_num_aiops = 2;
1846 rocketModel[i].model = MODEL_RP16SNI;
1847 strcpy(rocketModel[i].modelString, "RocketPort 16 port w/ custom DB78");
1848 rocketModel[i].numPorts = 16;
1849 break;
1850 case PCI_DEVICE_ID_RP16INTF:
Linus Torvalds1da177e2005-04-16 15:20:36 -07001851 max_num_aiops = 2;
1852 rocketModel[i].model = MODEL_RP16INTF;
1853 strcpy(rocketModel[i].modelString, "RocketPort 16 port w/external I/F");
1854 rocketModel[i].numPorts = 16;
1855 break;
1856 case PCI_DEVICE_ID_URP16INTF:
Linus Torvalds1da177e2005-04-16 15:20:36 -07001857 max_num_aiops = 2;
1858 rocketModel[i].model = MODEL_UPCI_RP16INTF;
1859 strcpy(rocketModel[i].modelString, "RocketPort UPCI 16 port w/external I/F");
1860 rocketModel[i].numPorts = 16;
1861 break;
1862 case PCI_DEVICE_ID_CRP16INTF:
Linus Torvalds1da177e2005-04-16 15:20:36 -07001863 max_num_aiops = 2;
1864 rocketModel[i].model = MODEL_CPCI_RP16INTF;
1865 strcpy(rocketModel[i].modelString, "RocketPort Compact PCI 16 port w/external I/F");
1866 rocketModel[i].numPorts = 16;
1867 break;
1868 case PCI_DEVICE_ID_RP32INTF:
Linus Torvalds1da177e2005-04-16 15:20:36 -07001869 max_num_aiops = 4;
1870 rocketModel[i].model = MODEL_RP32INTF;
1871 strcpy(rocketModel[i].modelString, "RocketPort 32 port w/external I/F");
1872 rocketModel[i].numPorts = 32;
1873 break;
1874 case PCI_DEVICE_ID_URP32INTF:
Linus Torvalds1da177e2005-04-16 15:20:36 -07001875 max_num_aiops = 4;
1876 rocketModel[i].model = MODEL_UPCI_RP32INTF;
1877 strcpy(rocketModel[i].modelString, "RocketPort UPCI 32 port w/external I/F");
1878 rocketModel[i].numPorts = 32;
1879 break;
1880 case PCI_DEVICE_ID_RPP4:
Linus Torvalds1da177e2005-04-16 15:20:36 -07001881 max_num_aiops = 1;
1882 ports_per_aiop = 4;
1883 altChanRingIndicator++;
1884 fast_clock++;
1885 rocketModel[i].model = MODEL_RPP4;
1886 strcpy(rocketModel[i].modelString, "RocketPort Plus 4 port");
1887 rocketModel[i].numPorts = 4;
1888 break;
1889 case PCI_DEVICE_ID_RPP8:
Linus Torvalds1da177e2005-04-16 15:20:36 -07001890 max_num_aiops = 2;
1891 ports_per_aiop = 4;
1892 altChanRingIndicator++;
1893 fast_clock++;
1894 rocketModel[i].model = MODEL_RPP8;
1895 strcpy(rocketModel[i].modelString, "RocketPort Plus 8 port");
1896 rocketModel[i].numPorts = 8;
1897 break;
1898 case PCI_DEVICE_ID_RP2_232:
Linus Torvalds1da177e2005-04-16 15:20:36 -07001899 max_num_aiops = 1;
1900 ports_per_aiop = 2;
1901 altChanRingIndicator++;
1902 fast_clock++;
1903 rocketModel[i].model = MODEL_RP2_232;
1904 strcpy(rocketModel[i].modelString, "RocketPort Plus 2 port RS232");
1905 rocketModel[i].numPorts = 2;
1906 break;
1907 case PCI_DEVICE_ID_RP2_422:
Linus Torvalds1da177e2005-04-16 15:20:36 -07001908 max_num_aiops = 1;
1909 ports_per_aiop = 2;
1910 altChanRingIndicator++;
1911 fast_clock++;
1912 rocketModel[i].model = MODEL_RP2_422;
1913 strcpy(rocketModel[i].modelString, "RocketPort Plus 2 port RS422");
1914 rocketModel[i].numPorts = 2;
1915 break;
1916 case PCI_DEVICE_ID_RP6M:
1917
1918 max_num_aiops = 1;
1919 ports_per_aiop = 6;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001920
Jiri Slaby57fedc72007-10-18 03:06:28 -07001921 /* If revision is 1, the rocketmodem flash must be loaded.
1922 * If it is 2 it is a "socketed" version. */
1923 if (dev->revision == 1) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001924 rcktpt_type[i] = ROCKET_TYPE_MODEMII;
1925 rocketModel[i].loadrm2 = 1;
1926 } else {
1927 rcktpt_type[i] = ROCKET_TYPE_MODEM;
1928 }
1929
1930 rocketModel[i].model = MODEL_RP6M;
1931 strcpy(rocketModel[i].modelString, "RocketModem 6 port");
1932 rocketModel[i].numPorts = 6;
1933 break;
1934 case PCI_DEVICE_ID_RP4M:
1935 max_num_aiops = 1;
1936 ports_per_aiop = 4;
Jiri Slaby57fedc72007-10-18 03:06:28 -07001937 if (dev->revision == 1) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001938 rcktpt_type[i] = ROCKET_TYPE_MODEMII;
1939 rocketModel[i].loadrm2 = 1;
1940 } else {
1941 rcktpt_type[i] = ROCKET_TYPE_MODEM;
1942 }
1943
1944 rocketModel[i].model = MODEL_RP4M;
1945 strcpy(rocketModel[i].modelString, "RocketModem 4 port");
1946 rocketModel[i].numPorts = 4;
1947 break;
1948 default:
Linus Torvalds1da177e2005-04-16 15:20:36 -07001949 max_num_aiops = 0;
1950 break;
1951 }
1952
1953 /*
1954 * Check for UPCI boards.
1955 */
1956
1957 switch (dev->device) {
1958 case PCI_DEVICE_ID_URP32INTF:
1959 case PCI_DEVICE_ID_URP8INTF:
1960 case PCI_DEVICE_ID_URP16INTF:
1961 case PCI_DEVICE_ID_CRP16INTF:
1962 case PCI_DEVICE_ID_URP8OCTA:
1963 rcktpt_io_addr[i] = pci_resource_start(dev, 2);
1964 ConfigIO = pci_resource_start(dev, 1);
1965 if (dev->device == PCI_DEVICE_ID_URP8OCTA) {
1966 UPCIRingInd = rcktpt_io_addr[i] + _PCI_9030_RING_IND;
1967
1968 /*
1969 * Check for octa or quad cable.
1970 */
1971 if (!
1972 (sInW(ConfigIO + _PCI_9030_GPIO_CTRL) &
1973 PCI_GPIO_CTRL_8PORT)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001974 ports_per_aiop = 4;
1975 rocketModel[i].numPorts = 4;
1976 }
1977 }
1978 break;
1979 case PCI_DEVICE_ID_UPCI_RM3_8PORT:
Linus Torvalds1da177e2005-04-16 15:20:36 -07001980 max_num_aiops = 1;
1981 rocketModel[i].model = MODEL_UPCI_RM3_8PORT;
1982 strcpy(rocketModel[i].modelString, "RocketModem III 8 port");
1983 rocketModel[i].numPorts = 8;
1984 rcktpt_io_addr[i] = pci_resource_start(dev, 2);
1985 UPCIRingInd = rcktpt_io_addr[i] + _PCI_9030_RING_IND;
1986 ConfigIO = pci_resource_start(dev, 1);
1987 rcktpt_type[i] = ROCKET_TYPE_MODEMIII;
1988 break;
1989 case PCI_DEVICE_ID_UPCI_RM3_4PORT:
Linus Torvalds1da177e2005-04-16 15:20:36 -07001990 max_num_aiops = 1;
1991 rocketModel[i].model = MODEL_UPCI_RM3_4PORT;
1992 strcpy(rocketModel[i].modelString, "RocketModem III 4 port");
1993 rocketModel[i].numPorts = 4;
1994 rcktpt_io_addr[i] = pci_resource_start(dev, 2);
1995 UPCIRingInd = rcktpt_io_addr[i] + _PCI_9030_RING_IND;
1996 ConfigIO = pci_resource_start(dev, 1);
1997 rcktpt_type[i] = ROCKET_TYPE_MODEMIII;
1998 break;
1999 default:
2000 break;
2001 }
2002
Linus Torvalds1da177e2005-04-16 15:20:36 -07002003 if (fast_clock) {
2004 sClockPrescale = 0x12; /* mod 2 (divide by 3) */
2005 rp_baud_base[i] = 921600;
2006 } else {
2007 /*
2008 * If support_low_speed is set, use the slow clock
2009 * prescale, which supports 50 bps
2010 */
2011 if (support_low_speed) {
2012 /* mod 9 (divide by 10) prescale */
2013 sClockPrescale = 0x19;
2014 rp_baud_base[i] = 230400;
2015 } else {
Lucas De Marchi25985ed2011-03-30 22:57:33 -03002016 /* mod 4 (divide by 5) prescale */
Linus Torvalds1da177e2005-04-16 15:20:36 -07002017 sClockPrescale = 0x14;
2018 rp_baud_base[i] = 460800;
2019 }
2020 }
2021
2022 for (aiop = 0; aiop < max_num_aiops; aiop++)
2023 aiopio[aiop] = rcktpt_io_addr[i] + (aiop * 0x40);
2024 ctlp = sCtlNumToCtlPtr(i);
2025 num_aiops = sPCIInitController(ctlp, i, aiopio, max_num_aiops, ConfigIO, 0, FREQ_DIS, 0, altChanRingIndicator, UPCIRingInd);
2026 for (aiop = 0; aiop < max_num_aiops; aiop++)
2027 ctlp->AiopNumChan[aiop] = ports_per_aiop;
2028
Jiri Slaby68562b72008-02-07 00:16:33 -08002029 dev_info(&dev->dev, "comtrol PCI controller #%d found at "
2030 "address %04lx, %d AIOP(s) (%s), creating ttyR%d - %ld\n",
2031 i, rcktpt_io_addr[i], num_aiops, rocketModel[i].modelString,
2032 rocketModel[i].startingPortNumber,
2033 rocketModel[i].startingPortNumber + rocketModel[i].numPorts-1);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002034
2035 if (num_aiops <= 0) {
2036 rcktpt_io_addr[i] = 0;
2037 return (0);
2038 }
2039 is_PCI[i] = 1;
2040
2041 /* Reset the AIOPIC, init the serial ports */
2042 for (aiop = 0; aiop < num_aiops; aiop++) {
2043 sResetAiopByNum(ctlp, aiop);
2044 num_chan = ports_per_aiop;
2045 for (chan = 0; chan < num_chan; chan++)
2046 init_r_port(i, aiop, chan, dev);
2047 }
2048
2049 /* Rocket modems must be reset */
2050 if ((rcktpt_type[i] == ROCKET_TYPE_MODEM) ||
2051 (rcktpt_type[i] == ROCKET_TYPE_MODEMII) ||
2052 (rcktpt_type[i] == ROCKET_TYPE_MODEMIII)) {
2053 num_chan = ports_per_aiop;
2054 for (chan = 0; chan < num_chan; chan++)
2055 sPCIModemReset(ctlp, chan, 1);
Jiri Slaby48a67f52008-02-07 00:16:32 -08002056 msleep(500);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002057 for (chan = 0; chan < num_chan; chan++)
2058 sPCIModemReset(ctlp, chan, 0);
Jiri Slaby48a67f52008-02-07 00:16:32 -08002059 msleep(500);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002060 rmSpeakerReset(ctlp, rocketModel[i].model);
2061 }
2062 return (1);
2063}
2064
2065/*
2066 * Probes for PCI cards, inits them if found
2067 * Input: board_found = number of ISA boards already found, or the
2068 * starting board number
2069 * Returns: Number of PCI boards found
2070 */
2071static int __init init_PCI(int boards_found)
2072{
2073 struct pci_dev *dev = NULL;
2074 int count = 0;
2075
2076 /* Work through the PCI device list, pulling out ours */
Alan Cox606d0992006-12-08 02:38:45 -08002077 while ((dev = pci_get_device(PCI_VENDOR_ID_RP, PCI_ANY_ID, dev))) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002078 if (register_PCI(count + boards_found, dev))
2079 count++;
2080 }
2081 return (count);
2082}
2083
2084#endif /* CONFIG_PCI */
2085
2086/*
2087 * Probes for ISA cards
2088 * Input: i = the board number to look for
2089 * Returns: 1 if board found, 0 else
2090 */
2091static int __init init_ISA(int i)
2092{
2093 int num_aiops, num_chan = 0, total_num_chan = 0;
2094 int aiop, chan;
2095 unsigned int aiopio[MAX_AIOPS_PER_BOARD];
2096 CONTROLLER_t *ctlp;
2097 char *type_string;
2098
2099 /* If io_addr is zero, no board configured */
2100 if (rcktpt_io_addr[i] == 0)
2101 return (0);
2102
2103 /* Reserve the IO region */
2104 if (!request_region(rcktpt_io_addr[i], 64, "Comtrol RocketPort")) {
Jiri Slaby68562b72008-02-07 00:16:33 -08002105 printk(KERN_ERR "Unable to reserve IO region for configured "
2106 "ISA RocketPort at address 0x%lx, board not "
2107 "installed...\n", rcktpt_io_addr[i]);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002108 rcktpt_io_addr[i] = 0;
2109 return (0);
2110 }
2111
2112 ctlp = sCtlNumToCtlPtr(i);
2113
2114 ctlp->boardType = rcktpt_type[i];
2115
2116 switch (rcktpt_type[i]) {
2117 case ROCKET_TYPE_PC104:
2118 type_string = "(PC104)";
2119 break;
2120 case ROCKET_TYPE_MODEM:
2121 type_string = "(RocketModem)";
2122 break;
2123 case ROCKET_TYPE_MODEMII:
2124 type_string = "(RocketModem II)";
2125 break;
2126 default:
2127 type_string = "";
2128 break;
2129 }
2130
2131 /*
2132 * If support_low_speed is set, use the slow clock prescale,
2133 * which supports 50 bps
2134 */
2135 if (support_low_speed) {
2136 sClockPrescale = 0x19; /* mod 9 (divide by 10) prescale */
2137 rp_baud_base[i] = 230400;
2138 } else {
Lucas De Marchi25985ed2011-03-30 22:57:33 -03002139 sClockPrescale = 0x14; /* mod 4 (divide by 5) prescale */
Linus Torvalds1da177e2005-04-16 15:20:36 -07002140 rp_baud_base[i] = 460800;
2141 }
2142
2143 for (aiop = 0; aiop < MAX_AIOPS_PER_BOARD; aiop++)
2144 aiopio[aiop] = rcktpt_io_addr[i] + (aiop * 0x400);
2145
2146 num_aiops = sInitController(ctlp, i, controller + (i * 0x400), aiopio, MAX_AIOPS_PER_BOARD, 0, FREQ_DIS, 0);
2147
2148 if (ctlp->boardType == ROCKET_TYPE_PC104) {
2149 sEnAiop(ctlp, 2); /* only one AIOPIC, but these */
2150 sEnAiop(ctlp, 3); /* CSels used for other stuff */
2151 }
2152
2153 /* If something went wrong initing the AIOP's release the ISA IO memory */
2154 if (num_aiops <= 0) {
2155 release_region(rcktpt_io_addr[i], 64);
2156 rcktpt_io_addr[i] = 0;
2157 return (0);
2158 }
2159
2160 rocketModel[i].startingPortNumber = nextLineNumber;
2161
2162 for (aiop = 0; aiop < num_aiops; aiop++) {
2163 sResetAiopByNum(ctlp, aiop);
2164 sEnAiop(ctlp, aiop);
2165 num_chan = sGetAiopNumChan(ctlp, aiop);
2166 total_num_chan += num_chan;
2167 for (chan = 0; chan < num_chan; chan++)
2168 init_r_port(i, aiop, chan, NULL);
2169 }
2170 is_PCI[i] = 0;
2171 if ((rcktpt_type[i] == ROCKET_TYPE_MODEM) || (rcktpt_type[i] == ROCKET_TYPE_MODEMII)) {
2172 num_chan = sGetAiopNumChan(ctlp, 0);
2173 total_num_chan = num_chan;
2174 for (chan = 0; chan < num_chan; chan++)
2175 sModemReset(ctlp, chan, 1);
Jiri Slaby48a67f52008-02-07 00:16:32 -08002176 msleep(500);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002177 for (chan = 0; chan < num_chan; chan++)
2178 sModemReset(ctlp, chan, 0);
Jiri Slaby48a67f52008-02-07 00:16:32 -08002179 msleep(500);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002180 strcpy(rocketModel[i].modelString, "RocketModem ISA");
2181 } else {
2182 strcpy(rocketModel[i].modelString, "RocketPort ISA");
2183 }
2184 rocketModel[i].numPorts = total_num_chan;
2185 rocketModel[i].model = MODEL_ISA;
2186
2187 printk(KERN_INFO "RocketPort ISA card #%d found at 0x%lx - %d AIOPs %s\n",
2188 i, rcktpt_io_addr[i], num_aiops, type_string);
2189
2190 printk(KERN_INFO "Installing %s, creating /dev/ttyR%d - %ld\n",
2191 rocketModel[i].modelString,
2192 rocketModel[i].startingPortNumber,
2193 rocketModel[i].startingPortNumber +
2194 rocketModel[i].numPorts - 1);
2195
2196 return (1);
2197}
2198
Jeff Dikeb68e31d2006-10-02 02:17:18 -07002199static const struct tty_operations rocket_ops = {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002200 .open = rp_open,
2201 .close = rp_close,
2202 .write = rp_write,
2203 .put_char = rp_put_char,
2204 .write_room = rp_write_room,
2205 .chars_in_buffer = rp_chars_in_buffer,
2206 .flush_buffer = rp_flush_buffer,
2207 .ioctl = rp_ioctl,
2208 .throttle = rp_throttle,
2209 .unthrottle = rp_unthrottle,
2210 .set_termios = rp_set_termios,
2211 .stop = rp_stop,
2212 .start = rp_start,
2213 .hangup = rp_hangup,
2214 .break_ctl = rp_break,
2215 .send_xchar = rp_send_xchar,
2216 .wait_until_sent = rp_wait_until_sent,
2217 .tiocmget = rp_tiocmget,
2218 .tiocmset = rp_tiocmset,
2219};
2220
Alan Cox31f35932009-01-02 13:45:05 +00002221static const struct tty_port_operations rocket_port_ops = {
2222 .carrier_raised = carrier_raised,
Alan Coxfcc8ac12009-06-11 12:24:17 +01002223 .dtr_rts = dtr_rts,
Alan Cox31f35932009-01-02 13:45:05 +00002224};
2225
Linus Torvalds1da177e2005-04-16 15:20:36 -07002226/*
2227 * The module "startup" routine; it's run when the module is loaded.
2228 */
Bjorn Helgaasd269cdd2005-10-30 15:03:14 -08002229static int __init rp_init(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002230{
Jiri Slaby4384a3f2007-10-18 03:06:28 -07002231 int ret = -ENOMEM, pci_boards_found, isa_boards_found, i;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002232
2233 printk(KERN_INFO "RocketPort device driver module, version %s, %s\n",
2234 ROCKET_VERSION, ROCKET_DATE);
2235
2236 rocket_driver = alloc_tty_driver(MAX_RP_PORTS);
2237 if (!rocket_driver)
Jiri Slaby4384a3f2007-10-18 03:06:28 -07002238 goto err;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002239
2240 /*
Linus Torvalds1da177e2005-04-16 15:20:36 -07002241 * If board 1 is non-zero, there is at least one ISA configured. If controller is
2242 * zero, use the default controller IO address of board1 + 0x40.
2243 */
2244 if (board1) {
2245 if (controller == 0)
2246 controller = board1 + 0x40;
2247 } else {
2248 controller = 0; /* Used as a flag, meaning no ISA boards */
2249 }
2250
2251 /* If an ISA card is configured, reserve the 4 byte IO space for the Mudbac controller */
2252 if (controller && (!request_region(controller, 4, "Comtrol RocketPort"))) {
Jiri Slaby4384a3f2007-10-18 03:06:28 -07002253 printk(KERN_ERR "Unable to reserve IO region for first "
2254 "configured ISA RocketPort controller 0x%lx. "
2255 "Driver exiting\n", controller);
2256 ret = -EBUSY;
2257 goto err_tty;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002258 }
2259
2260 /* Store ISA variable retrieved from command line or .conf file. */
2261 rcktpt_io_addr[0] = board1;
2262 rcktpt_io_addr[1] = board2;
2263 rcktpt_io_addr[2] = board3;
2264 rcktpt_io_addr[3] = board4;
2265
2266 rcktpt_type[0] = modem1 ? ROCKET_TYPE_MODEM : ROCKET_TYPE_NORMAL;
2267 rcktpt_type[0] = pc104_1[0] ? ROCKET_TYPE_PC104 : rcktpt_type[0];
2268 rcktpt_type[1] = modem2 ? ROCKET_TYPE_MODEM : ROCKET_TYPE_NORMAL;
2269 rcktpt_type[1] = pc104_2[0] ? ROCKET_TYPE_PC104 : rcktpt_type[1];
2270 rcktpt_type[2] = modem3 ? ROCKET_TYPE_MODEM : ROCKET_TYPE_NORMAL;
2271 rcktpt_type[2] = pc104_3[0] ? ROCKET_TYPE_PC104 : rcktpt_type[2];
2272 rcktpt_type[3] = modem4 ? ROCKET_TYPE_MODEM : ROCKET_TYPE_NORMAL;
2273 rcktpt_type[3] = pc104_4[0] ? ROCKET_TYPE_PC104 : rcktpt_type[3];
2274
2275 /*
2276 * Set up the tty driver structure and then register this
2277 * driver with the tty layer.
2278 */
2279
Greg Kroah-Hartman331b8312005-06-20 21:15:16 -07002280 rocket_driver->flags = TTY_DRIVER_DYNAMIC_DEV;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002281 rocket_driver->name = "ttyR";
2282 rocket_driver->driver_name = "Comtrol RocketPort";
2283 rocket_driver->major = TTY_ROCKET_MAJOR;
2284 rocket_driver->minor_start = 0;
2285 rocket_driver->type = TTY_DRIVER_TYPE_SERIAL;
2286 rocket_driver->subtype = SERIAL_TYPE_NORMAL;
2287 rocket_driver->init_termios = tty_std_termios;
2288 rocket_driver->init_termios.c_cflag =
2289 B9600 | CS8 | CREAD | HUPCL | CLOCAL;
Alan Cox606d0992006-12-08 02:38:45 -08002290 rocket_driver->init_termios.c_ispeed = 9600;
2291 rocket_driver->init_termios.c_ospeed = 9600;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002292#ifdef ROCKET_SOFT_FLOW
Jiri Slabyac6aec22007-10-18 03:06:26 -07002293 rocket_driver->flags |= TTY_DRIVER_REAL_RAW;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002294#endif
2295 tty_set_operations(rocket_driver, &rocket_ops);
2296
Jiri Slaby4384a3f2007-10-18 03:06:28 -07002297 ret = tty_register_driver(rocket_driver);
2298 if (ret < 0) {
2299 printk(KERN_ERR "Couldn't install tty RocketPort driver\n");
Dan Carpenter713efa92010-10-27 15:34:18 -07002300 goto err_controller;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002301 }
2302
2303#ifdef ROCKET_DEBUG_OPEN
2304 printk(KERN_INFO "RocketPort driver is major %d\n", rocket_driver.major);
2305#endif
2306
2307 /*
2308 * OK, let's probe each of the controllers looking for boards. Any boards found
2309 * will be initialized here.
2310 */
2311 isa_boards_found = 0;
2312 pci_boards_found = 0;
2313
2314 for (i = 0; i < NUM_BOARDS; i++) {
2315 if (init_ISA(i))
2316 isa_boards_found++;
2317 }
2318
2319#ifdef CONFIG_PCI
2320 if (isa_boards_found < NUM_BOARDS)
2321 pci_boards_found = init_PCI(isa_boards_found);
2322#endif
2323
2324 max_board = pci_boards_found + isa_boards_found;
2325
2326 if (max_board == 0) {
Jiri Slaby4384a3f2007-10-18 03:06:28 -07002327 printk(KERN_ERR "No rocketport ports found; unloading driver\n");
2328 ret = -ENXIO;
2329 goto err_ttyu;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002330 }
2331
2332 return 0;
Jiri Slaby4384a3f2007-10-18 03:06:28 -07002333err_ttyu:
2334 tty_unregister_driver(rocket_driver);
Dan Carpenter713efa92010-10-27 15:34:18 -07002335err_controller:
2336 if (controller)
2337 release_region(controller, 4);
Jiri Slaby4384a3f2007-10-18 03:06:28 -07002338err_tty:
2339 put_tty_driver(rocket_driver);
2340err:
2341 return ret;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002342}
2343
Linus Torvalds1da177e2005-04-16 15:20:36 -07002344
2345static void rp_cleanup_module(void)
2346{
2347 int retval;
2348 int i;
2349
2350 del_timer_sync(&rocket_timer);
2351
2352 retval = tty_unregister_driver(rocket_driver);
2353 if (retval)
Jiri Slaby68562b72008-02-07 00:16:33 -08002354 printk(KERN_ERR "Error %d while trying to unregister "
Linus Torvalds1da177e2005-04-16 15:20:36 -07002355 "rocketport driver\n", -retval);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002356
Jesper Juhl735d5662005-11-07 01:01:29 -08002357 for (i = 0; i < MAX_RP_PORTS; i++)
Jiri Slabyac6aec22007-10-18 03:06:26 -07002358 if (rp_table[i]) {
2359 tty_unregister_device(rocket_driver, i);
2360 kfree(rp_table[i]);
2361 }
2362
2363 put_tty_driver(rocket_driver);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002364
2365 for (i = 0; i < NUM_BOARDS; i++) {
2366 if (rcktpt_io_addr[i] <= 0 || is_PCI[i])
2367 continue;
2368 release_region(rcktpt_io_addr[i], 64);
2369 }
2370 if (controller)
2371 release_region(controller, 4);
2372}
Linus Torvalds1da177e2005-04-16 15:20:36 -07002373
Linus Torvalds1da177e2005-04-16 15:20:36 -07002374/***************************************************************************
2375Function: sInitController
2376Purpose: Initialization of controller global registers and controller
2377 structure.
2378Call: sInitController(CtlP,CtlNum,MudbacIO,AiopIOList,AiopIOListSize,
2379 IRQNum,Frequency,PeriodicOnly)
2380 CONTROLLER_T *CtlP; Ptr to controller structure
2381 int CtlNum; Controller number
2382 ByteIO_t MudbacIO; Mudbac base I/O address.
2383 ByteIO_t *AiopIOList; List of I/O addresses for each AIOP.
2384 This list must be in the order the AIOPs will be found on the
2385 controller. Once an AIOP in the list is not found, it is
2386 assumed that there are no more AIOPs on the controller.
2387 int AiopIOListSize; Number of addresses in AiopIOList
2388 int IRQNum; Interrupt Request number. Can be any of the following:
2389 0: Disable global interrupts
2390 3: IRQ 3
2391 4: IRQ 4
2392 5: IRQ 5
2393 9: IRQ 9
2394 10: IRQ 10
2395 11: IRQ 11
2396 12: IRQ 12
2397 15: IRQ 15
2398 Byte_t Frequency: A flag identifying the frequency
2399 of the periodic interrupt, can be any one of the following:
2400 FREQ_DIS - periodic interrupt disabled
2401 FREQ_137HZ - 137 Hertz
2402 FREQ_69HZ - 69 Hertz
2403 FREQ_34HZ - 34 Hertz
2404 FREQ_17HZ - 17 Hertz
2405 FREQ_9HZ - 9 Hertz
2406 FREQ_4HZ - 4 Hertz
2407 If IRQNum is set to 0 the Frequency parameter is
2408 overidden, it is forced to a value of FREQ_DIS.
Adrian Bunkf15313b2005-06-25 14:59:05 -07002409 int PeriodicOnly: 1 if all interrupts except the periodic
Linus Torvalds1da177e2005-04-16 15:20:36 -07002410 interrupt are to be blocked.
Adrian Bunkf15313b2005-06-25 14:59:05 -07002411 0 is both the periodic interrupt and
Linus Torvalds1da177e2005-04-16 15:20:36 -07002412 other channel interrupts are allowed.
2413 If IRQNum is set to 0 the PeriodicOnly parameter is
Adrian Bunkf15313b2005-06-25 14:59:05 -07002414 overidden, it is forced to a value of 0.
Linus Torvalds1da177e2005-04-16 15:20:36 -07002415Return: int: Number of AIOPs on the controller, or CTLID_NULL if controller
2416 initialization failed.
2417
2418Comments:
2419 If periodic interrupts are to be disabled but AIOP interrupts
Adrian Bunkf15313b2005-06-25 14:59:05 -07002420 are allowed, set Frequency to FREQ_DIS and PeriodicOnly to 0.
Linus Torvalds1da177e2005-04-16 15:20:36 -07002421
2422 If interrupts are to be completely disabled set IRQNum to 0.
2423
Adrian Bunkf15313b2005-06-25 14:59:05 -07002424 Setting Frequency to FREQ_DIS and PeriodicOnly to 1 is an
Linus Torvalds1da177e2005-04-16 15:20:36 -07002425 invalid combination.
2426
2427 This function performs initialization of global interrupt modes,
2428 but it does not actually enable global interrupts. To enable
2429 and disable global interrupts use functions sEnGlobalInt() and
2430 sDisGlobalInt(). Enabling of global interrupts is normally not
2431 done until all other initializations are complete.
2432
2433 Even if interrupts are globally enabled, they must also be
2434 individually enabled for each channel that is to generate
2435 interrupts.
2436
2437Warnings: No range checking on any of the parameters is done.
2438
2439 No context switches are allowed while executing this function.
2440
2441 After this function all AIOPs on the controller are disabled,
2442 they can be enabled with sEnAiop().
2443*/
Adrian Bunkf15313b2005-06-25 14:59:05 -07002444static int sInitController(CONTROLLER_T * CtlP, int CtlNum, ByteIO_t MudbacIO,
2445 ByteIO_t * AiopIOList, int AiopIOListSize,
2446 int IRQNum, Byte_t Frequency, int PeriodicOnly)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002447{
2448 int i;
2449 ByteIO_t io;
2450 int done;
2451
2452 CtlP->AiopIntrBits = aiop_intr_bits;
2453 CtlP->AltChanRingIndicator = 0;
2454 CtlP->CtlNum = CtlNum;
2455 CtlP->CtlID = CTLID_0001; /* controller release 1 */
2456 CtlP->BusType = isISA;
2457 CtlP->MBaseIO = MudbacIO;
2458 CtlP->MReg1IO = MudbacIO + 1;
2459 CtlP->MReg2IO = MudbacIO + 2;
2460 CtlP->MReg3IO = MudbacIO + 3;
2461#if 1
2462 CtlP->MReg2 = 0; /* interrupt disable */
2463 CtlP->MReg3 = 0; /* no periodic interrupts */
2464#else
2465 if (sIRQMap[IRQNum] == 0) { /* interrupts globally disabled */
2466 CtlP->MReg2 = 0; /* interrupt disable */
2467 CtlP->MReg3 = 0; /* no periodic interrupts */
2468 } else {
2469 CtlP->MReg2 = sIRQMap[IRQNum]; /* set IRQ number */
2470 CtlP->MReg3 = Frequency; /* set frequency */
2471 if (PeriodicOnly) { /* periodic interrupt only */
2472 CtlP->MReg3 |= PERIODIC_ONLY;
2473 }
2474 }
2475#endif
2476 sOutB(CtlP->MReg2IO, CtlP->MReg2);
2477 sOutB(CtlP->MReg3IO, CtlP->MReg3);
2478 sControllerEOI(CtlP); /* clear EOI if warm init */
2479 /* Init AIOPs */
2480 CtlP->NumAiop = 0;
2481 for (i = done = 0; i < AiopIOListSize; i++) {
2482 io = AiopIOList[i];
2483 CtlP->AiopIO[i] = (WordIO_t) io;
2484 CtlP->AiopIntChanIO[i] = io + _INT_CHAN;
2485 sOutB(CtlP->MReg2IO, CtlP->MReg2 | (i & 0x03)); /* AIOP index */
2486 sOutB(MudbacIO, (Byte_t) (io >> 6)); /* set up AIOP I/O in MUDBAC */
2487 if (done)
2488 continue;
2489 sEnAiop(CtlP, i); /* enable the AIOP */
2490 CtlP->AiopID[i] = sReadAiopID(io); /* read AIOP ID */
2491 if (CtlP->AiopID[i] == AIOPID_NULL) /* if AIOP does not exist */
2492 done = 1; /* done looking for AIOPs */
2493 else {
2494 CtlP->AiopNumChan[i] = sReadAiopNumChan((WordIO_t) io); /* num channels in AIOP */
2495 sOutW((WordIO_t) io + _INDX_ADDR, _CLK_PRE); /* clock prescaler */
2496 sOutB(io + _INDX_DATA, sClockPrescale);
2497 CtlP->NumAiop++; /* bump count of AIOPs */
2498 }
2499 sDisAiop(CtlP, i); /* disable AIOP */
2500 }
2501
2502 if (CtlP->NumAiop == 0)
2503 return (-1);
2504 else
2505 return (CtlP->NumAiop);
2506}
2507
2508/***************************************************************************
2509Function: sPCIInitController
2510Purpose: Initialization of controller global registers and controller
2511 structure.
2512Call: sPCIInitController(CtlP,CtlNum,AiopIOList,AiopIOListSize,
2513 IRQNum,Frequency,PeriodicOnly)
2514 CONTROLLER_T *CtlP; Ptr to controller structure
2515 int CtlNum; Controller number
2516 ByteIO_t *AiopIOList; List of I/O addresses for each AIOP.
2517 This list must be in the order the AIOPs will be found on the
2518 controller. Once an AIOP in the list is not found, it is
2519 assumed that there are no more AIOPs on the controller.
2520 int AiopIOListSize; Number of addresses in AiopIOList
2521 int IRQNum; Interrupt Request number. Can be any of the following:
2522 0: Disable global interrupts
2523 3: IRQ 3
2524 4: IRQ 4
2525 5: IRQ 5
2526 9: IRQ 9
2527 10: IRQ 10
2528 11: IRQ 11
2529 12: IRQ 12
2530 15: IRQ 15
2531 Byte_t Frequency: A flag identifying the frequency
2532 of the periodic interrupt, can be any one of the following:
2533 FREQ_DIS - periodic interrupt disabled
2534 FREQ_137HZ - 137 Hertz
2535 FREQ_69HZ - 69 Hertz
2536 FREQ_34HZ - 34 Hertz
2537 FREQ_17HZ - 17 Hertz
2538 FREQ_9HZ - 9 Hertz
2539 FREQ_4HZ - 4 Hertz
2540 If IRQNum is set to 0 the Frequency parameter is
2541 overidden, it is forced to a value of FREQ_DIS.
Adrian Bunkf15313b2005-06-25 14:59:05 -07002542 int PeriodicOnly: 1 if all interrupts except the periodic
Linus Torvalds1da177e2005-04-16 15:20:36 -07002543 interrupt are to be blocked.
Adrian Bunkf15313b2005-06-25 14:59:05 -07002544 0 is both the periodic interrupt and
Linus Torvalds1da177e2005-04-16 15:20:36 -07002545 other channel interrupts are allowed.
2546 If IRQNum is set to 0 the PeriodicOnly parameter is
Adrian Bunkf15313b2005-06-25 14:59:05 -07002547 overidden, it is forced to a value of 0.
Linus Torvalds1da177e2005-04-16 15:20:36 -07002548Return: int: Number of AIOPs on the controller, or CTLID_NULL if controller
2549 initialization failed.
2550
2551Comments:
2552 If periodic interrupts are to be disabled but AIOP interrupts
Adrian Bunkf15313b2005-06-25 14:59:05 -07002553 are allowed, set Frequency to FREQ_DIS and PeriodicOnly to 0.
Linus Torvalds1da177e2005-04-16 15:20:36 -07002554
2555 If interrupts are to be completely disabled set IRQNum to 0.
2556
Adrian Bunkf15313b2005-06-25 14:59:05 -07002557 Setting Frequency to FREQ_DIS and PeriodicOnly to 1 is an
Linus Torvalds1da177e2005-04-16 15:20:36 -07002558 invalid combination.
2559
2560 This function performs initialization of global interrupt modes,
2561 but it does not actually enable global interrupts. To enable
2562 and disable global interrupts use functions sEnGlobalInt() and
2563 sDisGlobalInt(). Enabling of global interrupts is normally not
2564 done until all other initializations are complete.
2565
2566 Even if interrupts are globally enabled, they must also be
2567 individually enabled for each channel that is to generate
2568 interrupts.
2569
2570Warnings: No range checking on any of the parameters is done.
2571
2572 No context switches are allowed while executing this function.
2573
2574 After this function all AIOPs on the controller are disabled,
2575 they can be enabled with sEnAiop().
2576*/
Adrian Bunkf15313b2005-06-25 14:59:05 -07002577static int sPCIInitController(CONTROLLER_T * CtlP, int CtlNum,
2578 ByteIO_t * AiopIOList, int AiopIOListSize,
2579 WordIO_t ConfigIO, int IRQNum, Byte_t Frequency,
2580 int PeriodicOnly, int altChanRingIndicator,
2581 int UPCIRingInd)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002582{
2583 int i;
2584 ByteIO_t io;
2585
2586 CtlP->AltChanRingIndicator = altChanRingIndicator;
2587 CtlP->UPCIRingInd = UPCIRingInd;
2588 CtlP->CtlNum = CtlNum;
2589 CtlP->CtlID = CTLID_0001; /* controller release 1 */
2590 CtlP->BusType = isPCI; /* controller release 1 */
2591
2592 if (ConfigIO) {
2593 CtlP->isUPCI = 1;
2594 CtlP->PCIIO = ConfigIO + _PCI_9030_INT_CTRL;
2595 CtlP->PCIIO2 = ConfigIO + _PCI_9030_GPIO_CTRL;
2596 CtlP->AiopIntrBits = upci_aiop_intr_bits;
2597 } else {
2598 CtlP->isUPCI = 0;
2599 CtlP->PCIIO =
2600 (WordIO_t) ((ByteIO_t) AiopIOList[0] + _PCI_INT_FUNC);
2601 CtlP->AiopIntrBits = aiop_intr_bits;
2602 }
2603
2604 sPCIControllerEOI(CtlP); /* clear EOI if warm init */
2605 /* Init AIOPs */
2606 CtlP->NumAiop = 0;
2607 for (i = 0; i < AiopIOListSize; i++) {
2608 io = AiopIOList[i];
2609 CtlP->AiopIO[i] = (WordIO_t) io;
2610 CtlP->AiopIntChanIO[i] = io + _INT_CHAN;
2611
2612 CtlP->AiopID[i] = sReadAiopID(io); /* read AIOP ID */
2613 if (CtlP->AiopID[i] == AIOPID_NULL) /* if AIOP does not exist */
2614 break; /* done looking for AIOPs */
2615
2616 CtlP->AiopNumChan[i] = sReadAiopNumChan((WordIO_t) io); /* num channels in AIOP */
2617 sOutW((WordIO_t) io + _INDX_ADDR, _CLK_PRE); /* clock prescaler */
2618 sOutB(io + _INDX_DATA, sClockPrescale);
2619 CtlP->NumAiop++; /* bump count of AIOPs */
2620 }
2621
2622 if (CtlP->NumAiop == 0)
2623 return (-1);
2624 else
2625 return (CtlP->NumAiop);
2626}
2627
2628/***************************************************************************
2629Function: sReadAiopID
2630Purpose: Read the AIOP idenfication number directly from an AIOP.
2631Call: sReadAiopID(io)
2632 ByteIO_t io: AIOP base I/O address
2633Return: int: Flag AIOPID_XXXX if a valid AIOP is found, where X
2634 is replace by an identifying number.
2635 Flag AIOPID_NULL if no valid AIOP is found
2636Warnings: No context switches are allowed while executing this function.
2637
2638*/
Adrian Bunkf15313b2005-06-25 14:59:05 -07002639static int sReadAiopID(ByteIO_t io)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002640{
2641 Byte_t AiopID; /* ID byte from AIOP */
2642
2643 sOutB(io + _CMD_REG, RESET_ALL); /* reset AIOP */
2644 sOutB(io + _CMD_REG, 0x0);
2645 AiopID = sInW(io + _CHN_STAT0) & 0x07;
2646 if (AiopID == 0x06)
2647 return (1);
2648 else /* AIOP does not exist */
2649 return (-1);
2650}
2651
2652/***************************************************************************
2653Function: sReadAiopNumChan
2654Purpose: Read the number of channels available in an AIOP directly from
2655 an AIOP.
2656Call: sReadAiopNumChan(io)
2657 WordIO_t io: AIOP base I/O address
2658Return: int: The number of channels available
2659Comments: The number of channels is determined by write/reads from identical
2660 offsets within the SRAM address spaces for channels 0 and 4.
2661 If the channel 4 space is mirrored to channel 0 it is a 4 channel
2662 AIOP, otherwise it is an 8 channel.
2663Warnings: No context switches are allowed while executing this function.
2664*/
Adrian Bunkf15313b2005-06-25 14:59:05 -07002665static int sReadAiopNumChan(WordIO_t io)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002666{
2667 Word_t x;
2668 static Byte_t R[4] = { 0x00, 0x00, 0x34, 0x12 };
2669
2670 /* write to chan 0 SRAM */
Al Viro457fb602008-03-19 16:27:48 +00002671 out32((DWordIO_t) io + _INDX_ADDR, R);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002672 sOutW(io + _INDX_ADDR, 0); /* read from SRAM, chan 0 */
2673 x = sInW(io + _INDX_DATA);
2674 sOutW(io + _INDX_ADDR, 0x4000); /* read from SRAM, chan 4 */
2675 if (x != sInW(io + _INDX_DATA)) /* if different must be 8 chan */
2676 return (8);
2677 else
2678 return (4);
2679}
2680
2681/***************************************************************************
2682Function: sInitChan
2683Purpose: Initialization of a channel and channel structure
2684Call: sInitChan(CtlP,ChP,AiopNum,ChanNum)
2685 CONTROLLER_T *CtlP; Ptr to controller structure
2686 CHANNEL_T *ChP; Ptr to channel structure
2687 int AiopNum; AIOP number within controller
2688 int ChanNum; Channel number within AIOP
Adrian Bunkf15313b2005-06-25 14:59:05 -07002689Return: int: 1 if initialization succeeded, 0 if it fails because channel
Linus Torvalds1da177e2005-04-16 15:20:36 -07002690 number exceeds number of channels available in AIOP.
2691Comments: This function must be called before a channel can be used.
2692Warnings: No range checking on any of the parameters is done.
2693
2694 No context switches are allowed while executing this function.
2695*/
Adrian Bunkf15313b2005-06-25 14:59:05 -07002696static int sInitChan(CONTROLLER_T * CtlP, CHANNEL_T * ChP, int AiopNum,
2697 int ChanNum)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002698{
2699 int i;
2700 WordIO_t AiopIO;
2701 WordIO_t ChIOOff;
2702 Byte_t *ChR;
2703 Word_t ChOff;
2704 static Byte_t R[4];
2705 int brd9600;
2706
2707 if (ChanNum >= CtlP->AiopNumChan[AiopNum])
Adrian Bunkf15313b2005-06-25 14:59:05 -07002708 return 0; /* exceeds num chans in AIOP */
Linus Torvalds1da177e2005-04-16 15:20:36 -07002709
2710 /* Channel, AIOP, and controller identifiers */
2711 ChP->CtlP = CtlP;
2712 ChP->ChanID = CtlP->AiopID[AiopNum];
2713 ChP->AiopNum = AiopNum;
2714 ChP->ChanNum = ChanNum;
2715
2716 /* Global direct addresses */
2717 AiopIO = CtlP->AiopIO[AiopNum];
2718 ChP->Cmd = (ByteIO_t) AiopIO + _CMD_REG;
2719 ChP->IntChan = (ByteIO_t) AiopIO + _INT_CHAN;
2720 ChP->IntMask = (ByteIO_t) AiopIO + _INT_MASK;
2721 ChP->IndexAddr = (DWordIO_t) AiopIO + _INDX_ADDR;
2722 ChP->IndexData = AiopIO + _INDX_DATA;
2723
2724 /* Channel direct addresses */
2725 ChIOOff = AiopIO + ChP->ChanNum * 2;
2726 ChP->TxRxData = ChIOOff + _TD0;
2727 ChP->ChanStat = ChIOOff + _CHN_STAT0;
2728 ChP->TxRxCount = ChIOOff + _FIFO_CNT0;
2729 ChP->IntID = (ByteIO_t) AiopIO + ChP->ChanNum + _INT_ID0;
2730
2731 /* Initialize the channel from the RData array */
2732 for (i = 0; i < RDATASIZE; i += 4) {
2733 R[0] = RData[i];
2734 R[1] = RData[i + 1] + 0x10 * ChanNum;
2735 R[2] = RData[i + 2];
2736 R[3] = RData[i + 3];
Al Viro457fb602008-03-19 16:27:48 +00002737 out32(ChP->IndexAddr, R);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002738 }
2739
2740 ChR = ChP->R;
2741 for (i = 0; i < RREGDATASIZE; i += 4) {
2742 ChR[i] = RRegData[i];
2743 ChR[i + 1] = RRegData[i + 1] + 0x10 * ChanNum;
2744 ChR[i + 2] = RRegData[i + 2];
2745 ChR[i + 3] = RRegData[i + 3];
2746 }
2747
2748 /* Indexed registers */
2749 ChOff = (Word_t) ChanNum *0x1000;
2750
2751 if (sClockPrescale == 0x14)
2752 brd9600 = 47;
2753 else
2754 brd9600 = 23;
2755
2756 ChP->BaudDiv[0] = (Byte_t) (ChOff + _BAUD);
2757 ChP->BaudDiv[1] = (Byte_t) ((ChOff + _BAUD) >> 8);
2758 ChP->BaudDiv[2] = (Byte_t) brd9600;
2759 ChP->BaudDiv[3] = (Byte_t) (brd9600 >> 8);
Al Viro457fb602008-03-19 16:27:48 +00002760 out32(ChP->IndexAddr, ChP->BaudDiv);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002761
2762 ChP->TxControl[0] = (Byte_t) (ChOff + _TX_CTRL);
2763 ChP->TxControl[1] = (Byte_t) ((ChOff + _TX_CTRL) >> 8);
2764 ChP->TxControl[2] = 0;
2765 ChP->TxControl[3] = 0;
Al Viro457fb602008-03-19 16:27:48 +00002766 out32(ChP->IndexAddr, ChP->TxControl);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002767
2768 ChP->RxControl[0] = (Byte_t) (ChOff + _RX_CTRL);
2769 ChP->RxControl[1] = (Byte_t) ((ChOff + _RX_CTRL) >> 8);
2770 ChP->RxControl[2] = 0;
2771 ChP->RxControl[3] = 0;
Al Viro457fb602008-03-19 16:27:48 +00002772 out32(ChP->IndexAddr, ChP->RxControl);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002773
2774 ChP->TxEnables[0] = (Byte_t) (ChOff + _TX_ENBLS);
2775 ChP->TxEnables[1] = (Byte_t) ((ChOff + _TX_ENBLS) >> 8);
2776 ChP->TxEnables[2] = 0;
2777 ChP->TxEnables[3] = 0;
Al Viro457fb602008-03-19 16:27:48 +00002778 out32(ChP->IndexAddr, ChP->TxEnables);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002779
2780 ChP->TxCompare[0] = (Byte_t) (ChOff + _TXCMP1);
2781 ChP->TxCompare[1] = (Byte_t) ((ChOff + _TXCMP1) >> 8);
2782 ChP->TxCompare[2] = 0;
2783 ChP->TxCompare[3] = 0;
Al Viro457fb602008-03-19 16:27:48 +00002784 out32(ChP->IndexAddr, ChP->TxCompare);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002785
2786 ChP->TxReplace1[0] = (Byte_t) (ChOff + _TXREP1B1);
2787 ChP->TxReplace1[1] = (Byte_t) ((ChOff + _TXREP1B1) >> 8);
2788 ChP->TxReplace1[2] = 0;
2789 ChP->TxReplace1[3] = 0;
Al Viro457fb602008-03-19 16:27:48 +00002790 out32(ChP->IndexAddr, ChP->TxReplace1);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002791
2792 ChP->TxReplace2[0] = (Byte_t) (ChOff + _TXREP2);
2793 ChP->TxReplace2[1] = (Byte_t) ((ChOff + _TXREP2) >> 8);
2794 ChP->TxReplace2[2] = 0;
2795 ChP->TxReplace2[3] = 0;
Al Viro457fb602008-03-19 16:27:48 +00002796 out32(ChP->IndexAddr, ChP->TxReplace2);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002797
2798 ChP->TxFIFOPtrs = ChOff + _TXF_OUTP;
2799 ChP->TxFIFO = ChOff + _TX_FIFO;
2800
2801 sOutB(ChP->Cmd, (Byte_t) ChanNum | RESTXFCNT); /* apply reset Tx FIFO count */
2802 sOutB(ChP->Cmd, (Byte_t) ChanNum); /* remove reset Tx FIFO count */
2803 sOutW((WordIO_t) ChP->IndexAddr, ChP->TxFIFOPtrs); /* clear Tx in/out ptrs */
2804 sOutW(ChP->IndexData, 0);
2805 ChP->RxFIFOPtrs = ChOff + _RXF_OUTP;
2806 ChP->RxFIFO = ChOff + _RX_FIFO;
2807
2808 sOutB(ChP->Cmd, (Byte_t) ChanNum | RESRXFCNT); /* apply reset Rx FIFO count */
2809 sOutB(ChP->Cmd, (Byte_t) ChanNum); /* remove reset Rx FIFO count */
2810 sOutW((WordIO_t) ChP->IndexAddr, ChP->RxFIFOPtrs); /* clear Rx out ptr */
2811 sOutW(ChP->IndexData, 0);
2812 sOutW((WordIO_t) ChP->IndexAddr, ChP->RxFIFOPtrs + 2); /* clear Rx in ptr */
2813 sOutW(ChP->IndexData, 0);
2814 ChP->TxPrioCnt = ChOff + _TXP_CNT;
2815 sOutW((WordIO_t) ChP->IndexAddr, ChP->TxPrioCnt);
2816 sOutB(ChP->IndexData, 0);
2817 ChP->TxPrioPtr = ChOff + _TXP_PNTR;
2818 sOutW((WordIO_t) ChP->IndexAddr, ChP->TxPrioPtr);
2819 sOutB(ChP->IndexData, 0);
2820 ChP->TxPrioBuf = ChOff + _TXP_BUF;
2821 sEnRxProcessor(ChP); /* start the Rx processor */
2822
Adrian Bunkf15313b2005-06-25 14:59:05 -07002823 return 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002824}
2825
2826/***************************************************************************
2827Function: sStopRxProcessor
2828Purpose: Stop the receive processor from processing a channel.
2829Call: sStopRxProcessor(ChP)
2830 CHANNEL_T *ChP; Ptr to channel structure
2831
2832Comments: The receive processor can be started again with sStartRxProcessor().
2833 This function causes the receive processor to skip over the
2834 stopped channel. It does not stop it from processing other channels.
2835
2836Warnings: No context switches are allowed while executing this function.
2837
2838 Do not leave the receive processor stopped for more than one
2839 character time.
2840
2841 After calling this function a delay of 4 uS is required to ensure
2842 that the receive processor is no longer processing this channel.
2843*/
Adrian Bunkf15313b2005-06-25 14:59:05 -07002844static void sStopRxProcessor(CHANNEL_T * ChP)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002845{
2846 Byte_t R[4];
2847
2848 R[0] = ChP->R[0];
2849 R[1] = ChP->R[1];
2850 R[2] = 0x0a;
2851 R[3] = ChP->R[3];
Al Viro457fb602008-03-19 16:27:48 +00002852 out32(ChP->IndexAddr, R);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002853}
2854
2855/***************************************************************************
2856Function: sFlushRxFIFO
2857Purpose: Flush the Rx FIFO
2858Call: sFlushRxFIFO(ChP)
2859 CHANNEL_T *ChP; Ptr to channel structure
2860Return: void
2861Comments: To prevent data from being enqueued or dequeued in the Tx FIFO
2862 while it is being flushed the receive processor is stopped
2863 and the transmitter is disabled. After these operations a
2864 4 uS delay is done before clearing the pointers to allow
2865 the receive processor to stop. These items are handled inside
2866 this function.
2867Warnings: No context switches are allowed while executing this function.
2868*/
Adrian Bunkf15313b2005-06-25 14:59:05 -07002869static void sFlushRxFIFO(CHANNEL_T * ChP)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002870{
2871 int i;
2872 Byte_t Ch; /* channel number within AIOP */
Adrian Bunkf15313b2005-06-25 14:59:05 -07002873 int RxFIFOEnabled; /* 1 if Rx FIFO enabled */
Linus Torvalds1da177e2005-04-16 15:20:36 -07002874
2875 if (sGetRxCnt(ChP) == 0) /* Rx FIFO empty */
2876 return; /* don't need to flush */
2877
Adrian Bunkf15313b2005-06-25 14:59:05 -07002878 RxFIFOEnabled = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002879 if (ChP->R[0x32] == 0x08) { /* Rx FIFO is enabled */
Adrian Bunkf15313b2005-06-25 14:59:05 -07002880 RxFIFOEnabled = 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002881 sDisRxFIFO(ChP); /* disable it */
2882 for (i = 0; i < 2000 / 200; i++) /* delay 2 uS to allow proc to disable FIFO */
2883 sInB(ChP->IntChan); /* depends on bus i/o timing */
2884 }
2885 sGetChanStatus(ChP); /* clear any pending Rx errors in chan stat */
2886 Ch = (Byte_t) sGetChanNum(ChP);
2887 sOutB(ChP->Cmd, Ch | RESRXFCNT); /* apply reset Rx FIFO count */
2888 sOutB(ChP->Cmd, Ch); /* remove reset Rx FIFO count */
2889 sOutW((WordIO_t) ChP->IndexAddr, ChP->RxFIFOPtrs); /* clear Rx out ptr */
2890 sOutW(ChP->IndexData, 0);
2891 sOutW((WordIO_t) ChP->IndexAddr, ChP->RxFIFOPtrs + 2); /* clear Rx in ptr */
2892 sOutW(ChP->IndexData, 0);
2893 if (RxFIFOEnabled)
2894 sEnRxFIFO(ChP); /* enable Rx FIFO */
2895}
2896
2897/***************************************************************************
2898Function: sFlushTxFIFO
2899Purpose: Flush the Tx FIFO
2900Call: sFlushTxFIFO(ChP)
2901 CHANNEL_T *ChP; Ptr to channel structure
2902Return: void
2903Comments: To prevent data from being enqueued or dequeued in the Tx FIFO
2904 while it is being flushed the receive processor is stopped
2905 and the transmitter is disabled. After these operations a
2906 4 uS delay is done before clearing the pointers to allow
2907 the receive processor to stop. These items are handled inside
2908 this function.
2909Warnings: No context switches are allowed while executing this function.
2910*/
Adrian Bunkf15313b2005-06-25 14:59:05 -07002911static void sFlushTxFIFO(CHANNEL_T * ChP)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002912{
2913 int i;
2914 Byte_t Ch; /* channel number within AIOP */
Adrian Bunkf15313b2005-06-25 14:59:05 -07002915 int TxEnabled; /* 1 if transmitter enabled */
Linus Torvalds1da177e2005-04-16 15:20:36 -07002916
2917 if (sGetTxCnt(ChP) == 0) /* Tx FIFO empty */
2918 return; /* don't need to flush */
2919
Adrian Bunkf15313b2005-06-25 14:59:05 -07002920 TxEnabled = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002921 if (ChP->TxControl[3] & TX_ENABLE) {
Adrian Bunkf15313b2005-06-25 14:59:05 -07002922 TxEnabled = 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002923 sDisTransmit(ChP); /* disable transmitter */
2924 }
2925 sStopRxProcessor(ChP); /* stop Rx processor */
2926 for (i = 0; i < 4000 / 200; i++) /* delay 4 uS to allow proc to stop */
2927 sInB(ChP->IntChan); /* depends on bus i/o timing */
2928 Ch = (Byte_t) sGetChanNum(ChP);
2929 sOutB(ChP->Cmd, Ch | RESTXFCNT); /* apply reset Tx FIFO count */
2930 sOutB(ChP->Cmd, Ch); /* remove reset Tx FIFO count */
2931 sOutW((WordIO_t) ChP->IndexAddr, ChP->TxFIFOPtrs); /* clear Tx in/out ptrs */
2932 sOutW(ChP->IndexData, 0);
2933 if (TxEnabled)
2934 sEnTransmit(ChP); /* enable transmitter */
2935 sStartRxProcessor(ChP); /* restart Rx processor */
2936}
2937
2938/***************************************************************************
2939Function: sWriteTxPrioByte
2940Purpose: Write a byte of priority transmit data to a channel
2941Call: sWriteTxPrioByte(ChP,Data)
2942 CHANNEL_T *ChP; Ptr to channel structure
2943 Byte_t Data; The transmit data byte
2944
2945Return: int: 1 if the bytes is successfully written, otherwise 0.
2946
2947Comments: The priority byte is transmitted before any data in the Tx FIFO.
2948
2949Warnings: No context switches are allowed while executing this function.
2950*/
Adrian Bunkf15313b2005-06-25 14:59:05 -07002951static int sWriteTxPrioByte(CHANNEL_T * ChP, Byte_t Data)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002952{
2953 Byte_t DWBuf[4]; /* buffer for double word writes */
2954 Word_t *WordPtr; /* must be far because Win SS != DS */
2955 register DWordIO_t IndexAddr;
2956
2957 if (sGetTxCnt(ChP) > 1) { /* write it to Tx priority buffer */
2958 IndexAddr = ChP->IndexAddr;
2959 sOutW((WordIO_t) IndexAddr, ChP->TxPrioCnt); /* get priority buffer status */
2960 if (sInB((ByteIO_t) ChP->IndexData) & PRI_PEND) /* priority buffer busy */
2961 return (0); /* nothing sent */
2962
2963 WordPtr = (Word_t *) (&DWBuf[0]);
2964 *WordPtr = ChP->TxPrioBuf; /* data byte address */
2965
2966 DWBuf[2] = Data; /* data byte value */
Al Viro457fb602008-03-19 16:27:48 +00002967 out32(IndexAddr, DWBuf); /* write it out */
Linus Torvalds1da177e2005-04-16 15:20:36 -07002968
2969 *WordPtr = ChP->TxPrioCnt; /* Tx priority count address */
2970
2971 DWBuf[2] = PRI_PEND + 1; /* indicate 1 byte pending */
2972 DWBuf[3] = 0; /* priority buffer pointer */
Al Viro457fb602008-03-19 16:27:48 +00002973 out32(IndexAddr, DWBuf); /* write it out */
Linus Torvalds1da177e2005-04-16 15:20:36 -07002974 } else { /* write it to Tx FIFO */
2975
2976 sWriteTxByte(sGetTxRxDataIO(ChP), Data);
2977 }
2978 return (1); /* 1 byte sent */
2979}
2980
2981/***************************************************************************
2982Function: sEnInterrupts
2983Purpose: Enable one or more interrupts for a channel
2984Call: sEnInterrupts(ChP,Flags)
2985 CHANNEL_T *ChP; Ptr to channel structure
2986 Word_t Flags: Interrupt enable flags, can be any combination
2987 of the following flags:
2988 TXINT_EN: Interrupt on Tx FIFO empty
2989 RXINT_EN: Interrupt on Rx FIFO at trigger level (see
2990 sSetRxTrigger())
2991 SRCINT_EN: Interrupt on SRC (Special Rx Condition)
2992 MCINT_EN: Interrupt on modem input change
2993 CHANINT_EN: Allow channel interrupt signal to the AIOP's
2994 Interrupt Channel Register.
2995Return: void
2996Comments: If an interrupt enable flag is set in Flags, that interrupt will be
2997 enabled. If an interrupt enable flag is not set in Flags, that
2998 interrupt will not be changed. Interrupts can be disabled with
2999 function sDisInterrupts().
3000
3001 This function sets the appropriate bit for the channel in the AIOP's
3002 Interrupt Mask Register if the CHANINT_EN flag is set. This allows
3003 this channel's bit to be set in the AIOP's Interrupt Channel Register.
3004
3005 Interrupts must also be globally enabled before channel interrupts
3006 will be passed on to the host. This is done with function
3007 sEnGlobalInt().
3008
3009 In some cases it may be desirable to disable interrupts globally but
3010 enable channel interrupts. This would allow the global interrupt
3011 status register to be used to determine which AIOPs need service.
3012*/
Adrian Bunkf15313b2005-06-25 14:59:05 -07003013static void sEnInterrupts(CHANNEL_T * ChP, Word_t Flags)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003014{
3015 Byte_t Mask; /* Interrupt Mask Register */
3016
3017 ChP->RxControl[2] |=
3018 ((Byte_t) Flags & (RXINT_EN | SRCINT_EN | MCINT_EN));
3019
Al Viro457fb602008-03-19 16:27:48 +00003020 out32(ChP->IndexAddr, ChP->RxControl);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003021
3022 ChP->TxControl[2] |= ((Byte_t) Flags & TXINT_EN);
3023
Al Viro457fb602008-03-19 16:27:48 +00003024 out32(ChP->IndexAddr, ChP->TxControl);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003025
3026 if (Flags & CHANINT_EN) {
3027 Mask = sInB(ChP->IntMask) | sBitMapSetTbl[ChP->ChanNum];
3028 sOutB(ChP->IntMask, Mask);
3029 }
3030}
3031
3032/***************************************************************************
3033Function: sDisInterrupts
3034Purpose: Disable one or more interrupts for a channel
3035Call: sDisInterrupts(ChP,Flags)
3036 CHANNEL_T *ChP; Ptr to channel structure
3037 Word_t Flags: Interrupt flags, can be any combination
3038 of the following flags:
3039 TXINT_EN: Interrupt on Tx FIFO empty
3040 RXINT_EN: Interrupt on Rx FIFO at trigger level (see
3041 sSetRxTrigger())
3042 SRCINT_EN: Interrupt on SRC (Special Rx Condition)
3043 MCINT_EN: Interrupt on modem input change
3044 CHANINT_EN: Disable channel interrupt signal to the
3045 AIOP's Interrupt Channel Register.
3046Return: void
3047Comments: If an interrupt flag is set in Flags, that interrupt will be
3048 disabled. If an interrupt flag is not set in Flags, that
3049 interrupt will not be changed. Interrupts can be enabled with
3050 function sEnInterrupts().
3051
3052 This function clears the appropriate bit for the channel in the AIOP's
3053 Interrupt Mask Register if the CHANINT_EN flag is set. This blocks
3054 this channel's bit from being set in the AIOP's Interrupt Channel
3055 Register.
3056*/
Adrian Bunkf15313b2005-06-25 14:59:05 -07003057static void sDisInterrupts(CHANNEL_T * ChP, Word_t Flags)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003058{
3059 Byte_t Mask; /* Interrupt Mask Register */
3060
3061 ChP->RxControl[2] &=
3062 ~((Byte_t) Flags & (RXINT_EN | SRCINT_EN | MCINT_EN));
Al Viro457fb602008-03-19 16:27:48 +00003063 out32(ChP->IndexAddr, ChP->RxControl);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003064 ChP->TxControl[2] &= ~((Byte_t) Flags & TXINT_EN);
Al Viro457fb602008-03-19 16:27:48 +00003065 out32(ChP->IndexAddr, ChP->TxControl);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003066
3067 if (Flags & CHANINT_EN) {
3068 Mask = sInB(ChP->IntMask) & sBitMapClrTbl[ChP->ChanNum];
3069 sOutB(ChP->IntMask, Mask);
3070 }
3071}
3072
Adrian Bunkf15313b2005-06-25 14:59:05 -07003073static void sSetInterfaceMode(CHANNEL_T * ChP, Byte_t mode)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003074{
3075 sOutB(ChP->CtlP->AiopIO[2], (mode & 0x18) | ChP->ChanNum);
3076}
3077
3078/*
3079 * Not an official SSCI function, but how to reset RocketModems.
3080 * ISA bus version
3081 */
Adrian Bunkf15313b2005-06-25 14:59:05 -07003082static void sModemReset(CONTROLLER_T * CtlP, int chan, int on)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003083{
3084 ByteIO_t addr;
3085 Byte_t val;
3086
3087 addr = CtlP->AiopIO[0] + 0x400;
3088 val = sInB(CtlP->MReg3IO);
3089 /* if AIOP[1] is not enabled, enable it */
3090 if ((val & 2) == 0) {
3091 val = sInB(CtlP->MReg2IO);
3092 sOutB(CtlP->MReg2IO, (val & 0xfc) | (1 & 0x03));
3093 sOutB(CtlP->MBaseIO, (unsigned char) (addr >> 6));
3094 }
3095
3096 sEnAiop(CtlP, 1);
3097 if (!on)
3098 addr += 8;
3099 sOutB(addr + chan, 0); /* apply or remove reset */
3100 sDisAiop(CtlP, 1);
3101}
3102
3103/*
3104 * Not an official SSCI function, but how to reset RocketModems.
3105 * PCI bus version
3106 */
Adrian Bunkf15313b2005-06-25 14:59:05 -07003107static void sPCIModemReset(CONTROLLER_T * CtlP, int chan, int on)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003108{
3109 ByteIO_t addr;
3110
3111 addr = CtlP->AiopIO[0] + 0x40; /* 2nd AIOP */
3112 if (!on)
3113 addr += 8;
3114 sOutB(addr + chan, 0); /* apply or remove reset */
3115}
3116
3117/* Resets the speaker controller on RocketModem II and III devices */
3118static void rmSpeakerReset(CONTROLLER_T * CtlP, unsigned long model)
3119{
3120 ByteIO_t addr;
3121
3122 /* RocketModem II speaker control is at the 8th port location of offset 0x40 */
3123 if ((model == MODEL_RP4M) || (model == MODEL_RP6M)) {
3124 addr = CtlP->AiopIO[0] + 0x4F;
3125 sOutB(addr, 0);
3126 }
3127
3128 /* RocketModem III speaker control is at the 1st port location of offset 0x80 */
3129 if ((model == MODEL_UPCI_RM3_8PORT)
3130 || (model == MODEL_UPCI_RM3_4PORT)) {
3131 addr = CtlP->AiopIO[0] + 0x88;
3132 sOutB(addr, 0);
3133 }
3134}
3135
3136/* Returns the line number given the controller (board), aiop and channel number */
3137static unsigned char GetLineNumber(int ctrl, int aiop, int ch)
3138{
3139 return lineNumbers[(ctrl << 5) | (aiop << 3) | ch];
3140}
3141
3142/*
3143 * Stores the line number associated with a given controller (board), aiop
3144 * and channel number.
3145 * Returns: The line number assigned
3146 */
3147static unsigned char SetLineNumber(int ctrl, int aiop, int ch)
3148{
3149 lineNumbers[(ctrl << 5) | (aiop << 3) | ch] = nextLineNumber++;
3150 return (nextLineNumber - 1);
3151}