2 * RocketPort device driver for Linux
4 * Written by Theodore Ts'o, 1995, 1996, 1997, 1998, 1999, 2000.
6 * Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2003 by Comtrol, Inc.
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.
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.
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.
24 * Kernel Synchronization:
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
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.
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.
42 /****** Defines ******/
43 #define ROCKET_PARANOIA_CHECK
44 #define ROCKET_DISABLE_SIMUSAGE
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
56 #undef ROCKET_DEBUG_IO
58 #define POLL_PERIOD HZ/100 /* Polling period .01 seconds (10ms) */
60 /****** Kernel includes ******/
62 #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>
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>
75 #include <linux/serial.h>
76 #include <linux/string.h>
77 #include <linux/fcntl.h>
78 #include <linux/ptrace.h>
79 #include <linux/mutex.h>
80 #include <linux/ioport.h>
81 #include <linux/delay.h>
82 #include <linux/completion.h>
83 #include <linux/wait.h>
84 #include <linux/pci.h>
85 #include <linux/uaccess.h>
86 #include <asm/atomic.h>
87 #include <asm/unaligned.h>
88 #include <linux/bitops.h>
89 #include <linux/spinlock.h>
90 #include <linux/init.h>
92 /****** RocketPort includes ******/
94 #include "rocket_int.h"
97 #define ROCKET_VERSION "2.09"
98 #define ROCKET_DATE "12-June-2003"
100 /****** RocketPort Local Variables ******/
102 static void rp_do_poll(unsigned long dummy);
104 static struct tty_driver *rocket_driver;
106 static struct rocket_version driver_version = {
107 ROCKET_VERSION, ROCKET_DATE
110 static struct r_port *rp_table[MAX_RP_PORTS]; /* The main repository of serial port state information. */
111 static unsigned int xmit_flags[NUM_BOARDS]; /* Bit significant, indicates port had data to transmit. */
112 /* eg. Bit 0 indicates port 0 has xmit data, ... */
113 static atomic_t rp_num_ports_open; /* Number of serial ports open */
114 static DEFINE_TIMER(rocket_timer, rp_do_poll, 0, 0);
116 static unsigned long board1; /* ISA addresses, retrieved from rocketport.conf */
117 static unsigned long board2;
118 static unsigned long board3;
119 static unsigned long board4;
120 static unsigned long controller;
121 static int support_low_speed;
122 static unsigned long modem1;
123 static unsigned long modem2;
124 static unsigned long modem3;
125 static unsigned long modem4;
126 static unsigned long pc104_1[8];
127 static unsigned long pc104_2[8];
128 static unsigned long pc104_3[8];
129 static unsigned long pc104_4[8];
130 static unsigned long *pc104[4] = { pc104_1, pc104_2, pc104_3, pc104_4 };
132 static int rp_baud_base[NUM_BOARDS]; /* Board config info (Someday make a per-board structure) */
133 static unsigned long rcktpt_io_addr[NUM_BOARDS];
134 static int rcktpt_type[NUM_BOARDS];
135 static int is_PCI[NUM_BOARDS];
136 static rocketModel_t rocketModel[NUM_BOARDS];
137 static int max_board;
140 * The following arrays define the interrupt bits corresponding to each AIOP.
141 * These bits are different between the ISA and regular PCI boards and the
142 * Universal PCI boards.
145 static Word_t aiop_intr_bits[AIOP_CTL_SIZE] = {
152 static Word_t upci_aiop_intr_bits[AIOP_CTL_SIZE] = {
153 UPCI_AIOP_INTR_BIT_0,
154 UPCI_AIOP_INTR_BIT_1,
155 UPCI_AIOP_INTR_BIT_2,
159 static Byte_t RData[RDATASIZE] = {
160 0x00, 0x09, 0xf6, 0x82,
161 0x02, 0x09, 0x86, 0xfb,
162 0x04, 0x09, 0x00, 0x0a,
163 0x06, 0x09, 0x01, 0x0a,
164 0x08, 0x09, 0x8a, 0x13,
165 0x0a, 0x09, 0xc5, 0x11,
166 0x0c, 0x09, 0x86, 0x85,
167 0x0e, 0x09, 0x20, 0x0a,
168 0x10, 0x09, 0x21, 0x0a,
169 0x12, 0x09, 0x41, 0xff,
170 0x14, 0x09, 0x82, 0x00,
171 0x16, 0x09, 0x82, 0x7b,
172 0x18, 0x09, 0x8a, 0x7d,
173 0x1a, 0x09, 0x88, 0x81,
174 0x1c, 0x09, 0x86, 0x7a,
175 0x1e, 0x09, 0x84, 0x81,
176 0x20, 0x09, 0x82, 0x7c,
177 0x22, 0x09, 0x0a, 0x0a
180 static Byte_t RRegData[RREGDATASIZE] = {
181 0x00, 0x09, 0xf6, 0x82, /* 00: Stop Rx processor */
182 0x08, 0x09, 0x8a, 0x13, /* 04: Tx software flow control */
183 0x0a, 0x09, 0xc5, 0x11, /* 08: XON char */
184 0x0c, 0x09, 0x86, 0x85, /* 0c: XANY */
185 0x12, 0x09, 0x41, 0xff, /* 10: Rx mask char */
186 0x14, 0x09, 0x82, 0x00, /* 14: Compare/Ignore #0 */
187 0x16, 0x09, 0x82, 0x7b, /* 18: Compare #1 */
188 0x18, 0x09, 0x8a, 0x7d, /* 1c: Compare #2 */
189 0x1a, 0x09, 0x88, 0x81, /* 20: Interrupt #1 */
190 0x1c, 0x09, 0x86, 0x7a, /* 24: Ignore/Replace #1 */
191 0x1e, 0x09, 0x84, 0x81, /* 28: Interrupt #2 */
192 0x20, 0x09, 0x82, 0x7c, /* 2c: Ignore/Replace #2 */
193 0x22, 0x09, 0x0a, 0x0a /* 30: Rx FIFO Enable */
196 static CONTROLLER_T sController[CTL_SIZE] = {
197 {-1, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, {0, 0, 0, 0},
198 {0, 0, 0, 0}, {-1, -1, -1, -1}, {0, 0, 0, 0}},
199 {-1, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, {0, 0, 0, 0},
200 {0, 0, 0, 0}, {-1, -1, -1, -1}, {0, 0, 0, 0}},
201 {-1, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, {0, 0, 0, 0},
202 {0, 0, 0, 0}, {-1, -1, -1, -1}, {0, 0, 0, 0}},
203 {-1, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, {0, 0, 0, 0},
204 {0, 0, 0, 0}, {-1, -1, -1, -1}, {0, 0, 0, 0}}
207 static Byte_t sBitMapClrTbl[8] = {
208 0xfe, 0xfd, 0xfb, 0xf7, 0xef, 0xdf, 0xbf, 0x7f
211 static Byte_t sBitMapSetTbl[8] = {
212 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80
215 static int sClockPrescale = 0x14;
218 * Line number is the ttySIx number (x), the Minor number. We
219 * assign them sequentially, starting at zero. The following
220 * array keeps track of the line number assigned to a given board/aiop/channel.
222 static unsigned char lineNumbers[MAX_RP_PORTS];
223 static unsigned long nextLineNumber;
225 /***** RocketPort Static Prototypes *********/
226 static int __init init_ISA(int i);
227 static void rp_wait_until_sent(struct tty_struct *tty, int timeout);
228 static void rp_flush_buffer(struct tty_struct *tty);
229 static void rmSpeakerReset(CONTROLLER_T * CtlP, unsigned long model);
230 static unsigned char GetLineNumber(int ctrl, int aiop, int ch);
231 static unsigned char SetLineNumber(int ctrl, int aiop, int ch);
232 static void rp_start(struct tty_struct *tty);
233 static int sInitChan(CONTROLLER_T * CtlP, CHANNEL_T * ChP, int AiopNum,
235 static void sSetInterfaceMode(CHANNEL_T * ChP, Byte_t mode);
236 static void sFlushRxFIFO(CHANNEL_T * ChP);
237 static void sFlushTxFIFO(CHANNEL_T * ChP);
238 static void sEnInterrupts(CHANNEL_T * ChP, Word_t Flags);
239 static void sDisInterrupts(CHANNEL_T * ChP, Word_t Flags);
240 static void sModemReset(CONTROLLER_T * CtlP, int chan, int on);
241 static void sPCIModemReset(CONTROLLER_T * CtlP, int chan, int on);
242 static int sWriteTxPrioByte(CHANNEL_T * ChP, Byte_t Data);
243 static int sPCIInitController(CONTROLLER_T * CtlP, int CtlNum,
244 ByteIO_t * AiopIOList, int AiopIOListSize,
245 WordIO_t ConfigIO, int IRQNum, Byte_t Frequency,
246 int PeriodicOnly, int altChanRingIndicator,
248 static int sInitController(CONTROLLER_T * CtlP, int CtlNum, ByteIO_t MudbacIO,
249 ByteIO_t * AiopIOList, int AiopIOListSize,
250 int IRQNum, Byte_t Frequency, int PeriodicOnly);
251 static int sReadAiopID(ByteIO_t io);
252 static int sReadAiopNumChan(WordIO_t io);
254 MODULE_AUTHOR("Theodore Ts'o");
255 MODULE_DESCRIPTION("Comtrol RocketPort driver");
256 module_param(board1, ulong, 0);
257 MODULE_PARM_DESC(board1, "I/O port for (ISA) board #1");
258 module_param(board2, ulong, 0);
259 MODULE_PARM_DESC(board2, "I/O port for (ISA) board #2");
260 module_param(board3, ulong, 0);
261 MODULE_PARM_DESC(board3, "I/O port for (ISA) board #3");
262 module_param(board4, ulong, 0);
263 MODULE_PARM_DESC(board4, "I/O port for (ISA) board #4");
264 module_param(controller, ulong, 0);
265 MODULE_PARM_DESC(controller, "I/O port for (ISA) rocketport controller");
266 module_param(support_low_speed, bool, 0);
267 MODULE_PARM_DESC(support_low_speed, "1 means support 50 baud, 0 means support 460400 baud");
268 module_param(modem1, ulong, 0);
269 MODULE_PARM_DESC(modem1, "1 means (ISA) board #1 is a RocketModem");
270 module_param(modem2, ulong, 0);
271 MODULE_PARM_DESC(modem2, "1 means (ISA) board #2 is a RocketModem");
272 module_param(modem3, ulong, 0);
273 MODULE_PARM_DESC(modem3, "1 means (ISA) board #3 is a RocketModem");
274 module_param(modem4, ulong, 0);
275 MODULE_PARM_DESC(modem4, "1 means (ISA) board #4 is a RocketModem");
276 module_param_array(pc104_1, ulong, NULL, 0);
277 MODULE_PARM_DESC(pc104_1, "set interface types for ISA(PC104) board #1 (e.g. pc104_1=232,232,485,485,...");
278 module_param_array(pc104_2, ulong, NULL, 0);
279 MODULE_PARM_DESC(pc104_2, "set interface types for ISA(PC104) board #2 (e.g. pc104_2=232,232,485,485,...");
280 module_param_array(pc104_3, ulong, NULL, 0);
281 MODULE_PARM_DESC(pc104_3, "set interface types for ISA(PC104) board #3 (e.g. pc104_3=232,232,485,485,...");
282 module_param_array(pc104_4, ulong, NULL, 0);
283 MODULE_PARM_DESC(pc104_4, "set interface types for ISA(PC104) board #4 (e.g. pc104_4=232,232,485,485,...");
285 static int rp_init(void);
286 static void rp_cleanup_module(void);
288 module_init(rp_init);
289 module_exit(rp_cleanup_module);
292 MODULE_LICENSE("Dual BSD/GPL");
294 /*************************************************************************/
295 /* Module code starts here */
297 static inline int rocket_paranoia_check(struct r_port *info,
300 #ifdef ROCKET_PARANOIA_CHECK
303 if (info->magic != RPORT_MAGIC) {
304 printk(KERN_WARNING "Warning: bad magic number for rocketport "
305 "struct in %s\n", routine);
313 /* Serial port receive data function. Called (from timer poll) when an AIOPIC signals
314 * that receive data is present on a serial port. Pulls data from FIFO, moves it into the
317 static void rp_do_receive(struct r_port *info,
318 struct tty_struct *tty,
319 CHANNEL_t * cp, unsigned int ChanStatus)
321 unsigned int CharNStat;
322 int ToRecv, wRecv, space;
325 ToRecv = sGetRxCnt(cp);
326 #ifdef ROCKET_DEBUG_INTR
327 printk(KERN_INFO "rp_do_receive(%d)...\n", ToRecv);
333 * if status indicates there are errored characters in the
334 * FIFO, then enter status mode (a word in FIFO holds
335 * character and status).
337 if (ChanStatus & (RXFOVERFL | RXBREAK | RXFRAME | RXPARITY)) {
338 if (!(ChanStatus & STATMODE)) {
339 #ifdef ROCKET_DEBUG_RECEIVE
340 printk(KERN_INFO "Entering STATMODE...\n");
342 ChanStatus |= STATMODE;
348 * if we previously entered status mode, then read down the
349 * FIFO one word at a time, pulling apart the character and
350 * the status. Update error counters depending on status
352 if (ChanStatus & STATMODE) {
353 #ifdef ROCKET_DEBUG_RECEIVE
354 printk(KERN_INFO "Ignore %x, read %x...\n",
355 info->ignore_status_mask, info->read_status_mask);
360 CharNStat = sInW(sGetTxRxDataIO(cp));
361 #ifdef ROCKET_DEBUG_RECEIVE
362 printk(KERN_INFO "%x...\n", CharNStat);
364 if (CharNStat & STMBREAKH)
365 CharNStat &= ~(STMFRAMEH | STMPARITYH);
366 if (CharNStat & info->ignore_status_mask) {
370 CharNStat &= info->read_status_mask;
371 if (CharNStat & STMBREAKH)
373 else if (CharNStat & STMPARITYH)
375 else if (CharNStat & STMFRAMEH)
377 else if (CharNStat & STMRCVROVRH)
381 tty_insert_flip_char(tty, CharNStat & 0xff, flag);
386 * after we've emptied the FIFO in status mode, turn
387 * status mode back off
389 if (sGetRxCnt(cp) == 0) {
390 #ifdef ROCKET_DEBUG_RECEIVE
391 printk(KERN_INFO "Status mode off.\n");
393 sDisRxStatusMode(cp);
397 * we aren't in status mode, so read down the FIFO two
398 * characters at time by doing repeated word IO
401 space = tty_prepare_flip_string(tty, &cbuf, ToRecv);
402 if (space < ToRecv) {
403 #ifdef ROCKET_DEBUG_RECEIVE
404 printk(KERN_INFO "rp_do_receive:insufficient space ToRecv=%d space=%d\n", ToRecv, space);
412 sInStrW(sGetTxRxDataIO(cp), (unsigned short *) cbuf, wRecv);
414 cbuf[ToRecv - 1] = sInB(sGetTxRxDataIO(cp));
416 /* Push the data up to the tty layer */
417 tty_flip_buffer_push(tty);
421 * Serial port transmit data function. Called from the timer polling loop as a
422 * result of a bit set in xmit_flags[], indicating data (from the tty layer) is ready
423 * to be sent out the serial port. Data is buffered in rp_table[line].xmit_buf, it is
424 * moved to the port's xmit FIFO. *info is critical data, protected by spinlocks.
426 static void rp_do_transmit(struct r_port *info)
429 CHANNEL_t *cp = &info->channel;
430 struct tty_struct *tty;
433 #ifdef ROCKET_DEBUG_INTR
434 printk(KERN_DEBUG "%s\n", __func__);
438 if (!info->port.tty) {
439 printk(KERN_WARNING "rp: WARNING %s called with "
440 "info->port.tty==NULL\n", __func__);
441 clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
445 spin_lock_irqsave(&info->slock, flags);
446 tty = info->port.tty;
447 info->xmit_fifo_room = TXFIFO_SIZE - sGetTxCnt(cp);
449 /* Loop sending data to FIFO until done or FIFO full */
451 if (tty->stopped || tty->hw_stopped)
453 c = min(info->xmit_fifo_room, info->xmit_cnt);
454 c = min(c, XMIT_BUF_SIZE - info->xmit_tail);
455 if (c <= 0 || info->xmit_fifo_room <= 0)
457 sOutStrW(sGetTxRxDataIO(cp), (unsigned short *) (info->xmit_buf + info->xmit_tail), c / 2);
459 sOutB(sGetTxRxDataIO(cp), info->xmit_buf[info->xmit_tail + c - 1]);
460 info->xmit_tail += c;
461 info->xmit_tail &= XMIT_BUF_SIZE - 1;
463 info->xmit_fifo_room -= c;
464 #ifdef ROCKET_DEBUG_INTR
465 printk(KERN_INFO "tx %d chars...\n", c);
469 if (info->xmit_cnt == 0)
470 clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
472 if (info->xmit_cnt < WAKEUP_CHARS) {
474 #ifdef ROCKETPORT_HAVE_POLL_WAIT
475 wake_up_interruptible(&tty->poll_wait);
479 spin_unlock_irqrestore(&info->slock, flags);
481 #ifdef ROCKET_DEBUG_INTR
482 printk(KERN_DEBUG "(%d,%d,%d,%d)...\n", info->xmit_cnt, info->xmit_head,
483 info->xmit_tail, info->xmit_fifo_room);
488 * Called when a serial port signals it has read data in it's RX FIFO.
489 * It checks what interrupts are pending and services them, including
490 * receiving serial data.
492 static void rp_handle_port(struct r_port *info)
495 struct tty_struct *tty;
496 unsigned int IntMask, ChanStatus;
501 if ((info->flags & ROCKET_INITIALIZED) == 0) {
502 printk(KERN_WARNING "rp: WARNING: rp_handle_port called with "
503 "info->flags & NOT_INIT\n");
506 if (!info->port.tty) {
507 printk(KERN_WARNING "rp: WARNING: rp_handle_port called with "
508 "info->port.tty==NULL\n");
512 tty = info->port.tty;
514 IntMask = sGetChanIntID(cp) & info->intmask;
515 #ifdef ROCKET_DEBUG_INTR
516 printk(KERN_INFO "rp_interrupt %02x...\n", IntMask);
518 ChanStatus = sGetChanStatus(cp);
519 if (IntMask & RXF_TRIG) { /* Rx FIFO trigger level */
520 rp_do_receive(info, tty, cp, ChanStatus);
522 if (IntMask & DELTA_CD) { /* CD change */
523 #if (defined(ROCKET_DEBUG_OPEN) || defined(ROCKET_DEBUG_INTR) || defined(ROCKET_DEBUG_HANGUP))
524 printk(KERN_INFO "ttyR%d CD now %s...\n", info->line,
525 (ChanStatus & CD_ACT) ? "on" : "off");
527 if (!(ChanStatus & CD_ACT) && info->cd_status) {
528 #ifdef ROCKET_DEBUG_HANGUP
529 printk(KERN_INFO "CD drop, calling hangup.\n");
533 info->cd_status = (ChanStatus & CD_ACT) ? 1 : 0;
534 wake_up_interruptible(&info->port.open_wait);
536 #ifdef ROCKET_DEBUG_INTR
537 if (IntMask & DELTA_CTS) { /* CTS change */
538 printk(KERN_INFO "CTS change...\n");
540 if (IntMask & DELTA_DSR) { /* DSR change */
541 printk(KERN_INFO "DSR change...\n");
547 * The top level polling routine. Repeats every 1/100 HZ (10ms).
549 static void rp_do_poll(unsigned long dummy)
552 int ctrl, aiop, ch, line;
553 unsigned int xmitmask, i;
554 unsigned int CtlMask;
555 unsigned char AiopMask;
558 /* Walk through all the boards (ctrl's) */
559 for (ctrl = 0; ctrl < max_board; ctrl++) {
560 if (rcktpt_io_addr[ctrl] <= 0)
563 /* Get a ptr to the board's control struct */
564 ctlp = sCtlNumToCtlPtr(ctrl);
566 /* Get the interrupt status from the board */
568 if (ctlp->BusType == isPCI)
569 CtlMask = sPCIGetControllerIntStatus(ctlp);
572 CtlMask = sGetControllerIntStatus(ctlp);
574 /* Check if any AIOP read bits are set */
575 for (aiop = 0; CtlMask; aiop++) {
576 bit = ctlp->AiopIntrBits[aiop];
579 AiopMask = sGetAiopIntStatus(ctlp, aiop);
581 /* Check if any port read bits are set */
582 for (ch = 0; AiopMask; AiopMask >>= 1, ch++) {
585 /* Get the line number (/dev/ttyRx number). */
586 /* Read the data from the port. */
587 line = GetLineNumber(ctrl, aiop, ch);
588 rp_handle_port(rp_table[line]);
594 xmitmask = xmit_flags[ctrl];
597 * xmit_flags contains bit-significant flags, indicating there is data
598 * to xmit on the port. Bit 0 is port 0 on this board, bit 1 is port
599 * 1, ... (32 total possible). The variable i has the aiop and ch
600 * numbers encoded in it (port 0-7 are aiop0, 8-15 are aiop1, etc).
603 for (i = 0; i < rocketModel[ctrl].numPorts; i++) {
604 if (xmitmask & (1 << i)) {
605 aiop = (i & 0x18) >> 3;
607 line = GetLineNumber(ctrl, aiop, ch);
608 rp_do_transmit(rp_table[line]);
615 * Reset the timer so we get called at the next clock tick (10ms).
617 if (atomic_read(&rp_num_ports_open))
618 mod_timer(&rocket_timer, jiffies + POLL_PERIOD);
622 * Initializes the r_port structure for a port, as well as enabling the port on
624 * Inputs: board, aiop, chan numbers
626 static void init_r_port(int board, int aiop, int chan, struct pci_dev *pci_dev)
633 /* Get the next available line number */
634 line = SetLineNumber(board, aiop, chan);
636 ctlp = sCtlNumToCtlPtr(board);
638 /* Get a r_port struct for the port, fill it in and save it globally, indexed by line number */
639 info = kzalloc(sizeof (struct r_port), GFP_KERNEL);
641 printk(KERN_ERR "Couldn't allocate info struct for line #%d\n",
646 info->magic = RPORT_MAGIC;
652 info->port.closing_wait = 3000;
653 info->port.close_delay = 50;
654 init_waitqueue_head(&info->port.open_wait);
655 init_completion(&info->close_wait);
656 info->flags &= ~ROCKET_MODE_MASK;
657 switch (pc104[board][line]) {
659 info->flags |= ROCKET_MODE_RS422;
662 info->flags |= ROCKET_MODE_RS485;
666 info->flags |= ROCKET_MODE_RS232;
670 info->intmask = RXF_TRIG | TXFIFO_MT | SRC_INT | DELTA_CD | DELTA_CTS | DELTA_DSR;
671 if (sInitChan(ctlp, &info->channel, aiop, chan) == 0) {
672 printk(KERN_ERR "RocketPort sInitChan(%d, %d, %d) failed!\n",
678 rocketMode = info->flags & ROCKET_MODE_MASK;
680 if ((info->flags & ROCKET_RTS_TOGGLE) || (rocketMode == ROCKET_MODE_RS485))
681 sEnRTSToggle(&info->channel);
683 sDisRTSToggle(&info->channel);
685 if (ctlp->boardType == ROCKET_TYPE_PC104) {
686 switch (rocketMode) {
687 case ROCKET_MODE_RS485:
688 sSetInterfaceMode(&info->channel, InterfaceModeRS485);
690 case ROCKET_MODE_RS422:
691 sSetInterfaceMode(&info->channel, InterfaceModeRS422);
693 case ROCKET_MODE_RS232:
695 if (info->flags & ROCKET_RTS_TOGGLE)
696 sSetInterfaceMode(&info->channel, InterfaceModeRS232T);
698 sSetInterfaceMode(&info->channel, InterfaceModeRS232);
702 spin_lock_init(&info->slock);
703 mutex_init(&info->write_mtx);
704 rp_table[line] = info;
705 tty_register_device(rocket_driver, line, pci_dev ? &pci_dev->dev :
710 * Configures a rocketport port according to its termio settings. Called from
711 * user mode into the driver (exception handler). *info CD manipulation is spinlock protected.
713 static void configure_r_port(struct r_port *info,
714 struct ktermios *old_termios)
719 int bits, baud, divisor;
721 struct ktermios *t = info->port.tty->termios;
726 /* Byte size and parity */
727 if ((cflag & CSIZE) == CS8) {
734 if (cflag & CSTOPB) {
741 if (cflag & PARENB) {
744 if (cflag & PARODD) {
754 baud = tty_get_baud_rate(info->port.tty);
757 divisor = ((rp_baud_base[info->board] + (baud >> 1)) / baud) - 1;
758 if ((divisor >= 8192 || divisor < 0) && old_termios) {
759 baud = tty_termios_baud_rate(old_termios);
762 divisor = (rp_baud_base[info->board] / baud) - 1;
764 if (divisor >= 8192 || divisor < 0) {
766 divisor = (rp_baud_base[info->board] / baud) - 1;
768 info->cps = baud / bits;
769 sSetBaud(cp, divisor);
771 /* FIXME: Should really back compute a baud rate from the divisor */
772 tty_encode_baud_rate(info->port.tty, baud, baud);
774 if (cflag & CRTSCTS) {
775 info->intmask |= DELTA_CTS;
778 info->intmask &= ~DELTA_CTS;
781 if (cflag & CLOCAL) {
782 info->intmask &= ~DELTA_CD;
784 spin_lock_irqsave(&info->slock, flags);
785 if (sGetChanStatus(cp) & CD_ACT)
789 info->intmask |= DELTA_CD;
790 spin_unlock_irqrestore(&info->slock, flags);
794 * Handle software flow control in the board
796 #ifdef ROCKET_SOFT_FLOW
797 if (I_IXON(info->port.tty)) {
798 sEnTxSoftFlowCtl(cp);
799 if (I_IXANY(info->port.tty)) {
804 sSetTxXONChar(cp, START_CHAR(info->port.tty));
805 sSetTxXOFFChar(cp, STOP_CHAR(info->port.tty));
807 sDisTxSoftFlowCtl(cp);
814 * Set up ignore/read mask words
816 info->read_status_mask = STMRCVROVRH | 0xFF;
817 if (I_INPCK(info->port.tty))
818 info->read_status_mask |= STMFRAMEH | STMPARITYH;
819 if (I_BRKINT(info->port.tty) || I_PARMRK(info->port.tty))
820 info->read_status_mask |= STMBREAKH;
823 * Characters to ignore
825 info->ignore_status_mask = 0;
826 if (I_IGNPAR(info->port.tty))
827 info->ignore_status_mask |= STMFRAMEH | STMPARITYH;
828 if (I_IGNBRK(info->port.tty)) {
829 info->ignore_status_mask |= STMBREAKH;
831 * If we're ignoring parity and break indicators,
832 * ignore overruns too. (For real raw support).
834 if (I_IGNPAR(info->port.tty))
835 info->ignore_status_mask |= STMRCVROVRH;
838 rocketMode = info->flags & ROCKET_MODE_MASK;
840 if ((info->flags & ROCKET_RTS_TOGGLE)
841 || (rocketMode == ROCKET_MODE_RS485))
846 sSetRTS(&info->channel);
848 if (cp->CtlP->boardType == ROCKET_TYPE_PC104) {
849 switch (rocketMode) {
850 case ROCKET_MODE_RS485:
851 sSetInterfaceMode(cp, InterfaceModeRS485);
853 case ROCKET_MODE_RS422:
854 sSetInterfaceMode(cp, InterfaceModeRS422);
856 case ROCKET_MODE_RS232:
858 if (info->flags & ROCKET_RTS_TOGGLE)
859 sSetInterfaceMode(cp, InterfaceModeRS232T);
861 sSetInterfaceMode(cp, InterfaceModeRS232);
867 /* info->port.count is considered critical, protected by spinlocks. */
868 static int block_til_ready(struct tty_struct *tty, struct file *filp,
871 DECLARE_WAITQUEUE(wait, current);
873 int do_clocal = 0, extra_count = 0;
877 * If the device is in the middle of being closed, then block
878 * until it's done, and then try again.
880 if (tty_hung_up_p(filp))
881 return ((info->flags & ROCKET_HUP_NOTIFY) ? -EAGAIN : -ERESTARTSYS);
882 if (info->flags & ROCKET_CLOSING) {
883 if (wait_for_completion_interruptible(&info->close_wait))
885 return ((info->flags & ROCKET_HUP_NOTIFY) ? -EAGAIN : -ERESTARTSYS);
889 * If non-blocking mode is set, or the port is not enabled,
890 * then make the check up front and then exit.
892 if ((filp->f_flags & O_NONBLOCK) || (tty->flags & (1 << TTY_IO_ERROR))) {
893 info->flags |= ROCKET_NORMAL_ACTIVE;
896 if (tty->termios->c_cflag & CLOCAL)
900 * Block waiting for the carrier detect and the line to become free. While we are in
901 * this loop, info->port.count is dropped by one, so that rp_close() knows when to free things.
902 * We restore it upon exit, either normal or abnormal.
905 add_wait_queue(&info->port.open_wait, &wait);
906 #ifdef ROCKET_DEBUG_OPEN
907 printk(KERN_INFO "block_til_ready before block: ttyR%d, count = %d\n", info->line, info->port.count);
909 spin_lock_irqsave(&info->slock, flags);
911 #ifdef ROCKET_DISABLE_SIMUSAGE
912 info->flags |= ROCKET_NORMAL_ACTIVE;
914 if (!tty_hung_up_p(filp)) {
919 info->port.blocked_open++;
921 spin_unlock_irqrestore(&info->slock, flags);
924 if (tty->termios->c_cflag & CBAUD) {
925 sSetDTR(&info->channel);
926 sSetRTS(&info->channel);
928 set_current_state(TASK_INTERRUPTIBLE);
929 if (tty_hung_up_p(filp) || !(info->flags & ROCKET_INITIALIZED)) {
930 if (info->flags & ROCKET_HUP_NOTIFY)
933 retval = -ERESTARTSYS;
936 if (!(info->flags & ROCKET_CLOSING) && (do_clocal || (sGetChanStatusLo(&info->channel) & CD_ACT)))
938 if (signal_pending(current)) {
939 retval = -ERESTARTSYS;
942 #ifdef ROCKET_DEBUG_OPEN
943 printk(KERN_INFO "block_til_ready blocking: ttyR%d, count = %d, flags=0x%0x\n",
944 info->line, info->port.count, info->flags);
946 schedule(); /* Don't hold spinlock here, will hang PC */
948 __set_current_state(TASK_RUNNING);
949 remove_wait_queue(&info->port.open_wait, &wait);
951 spin_lock_irqsave(&info->slock, flags);
955 info->port.blocked_open--;
957 spin_unlock_irqrestore(&info->slock, flags);
959 #ifdef ROCKET_DEBUG_OPEN
960 printk(KERN_INFO "block_til_ready after blocking: ttyR%d, count = %d\n",
961 info->line, info->port.count);
965 info->flags |= ROCKET_NORMAL_ACTIVE;
970 * Exception handler that opens a serial port. Creates xmit_buf storage, fills in
971 * port's r_port struct. Initializes the port hardware.
973 static int rp_open(struct tty_struct *tty, struct file *filp)
976 int line = 0, retval;
981 if ((line < 0) || (line >= MAX_RP_PORTS) || ((info = rp_table[line]) == NULL))
984 page = __get_free_page(GFP_KERNEL);
988 if (info->flags & ROCKET_CLOSING) {
989 retval = wait_for_completion_interruptible(&info->close_wait);
993 return ((info->flags & ROCKET_HUP_NOTIFY) ? -EAGAIN : -ERESTARTSYS);
997 * We must not sleep from here until the port is marked fully in use.
1002 info->xmit_buf = (unsigned char *) page;
1004 tty->driver_data = info;
1005 info->port.tty = tty;
1007 if (info->port.count++ == 0) {
1008 atomic_inc(&rp_num_ports_open);
1010 #ifdef ROCKET_DEBUG_OPEN
1011 printk(KERN_INFO "rocket mod++ = %d...\n",
1012 atomic_read(&rp_num_ports_open));
1015 #ifdef ROCKET_DEBUG_OPEN
1016 printk(KERN_INFO "rp_open ttyR%d, count=%d\n", info->line, info->port.count);
1020 * Info->count is now 1; so it's safe to sleep now.
1022 if ((info->flags & ROCKET_INITIALIZED) == 0) {
1023 cp = &info->channel;
1024 sSetRxTrigger(cp, TRIG_1);
1025 if (sGetChanStatus(cp) & CD_ACT)
1026 info->cd_status = 1;
1028 info->cd_status = 0;
1029 sDisRxStatusMode(cp);
1033 sEnInterrupts(cp, (TXINT_EN | MCINT_EN | RXINT_EN | SRCINT_EN | CHANINT_EN));
1034 sSetRxTrigger(cp, TRIG_1);
1037 sDisRxStatusMode(cp);
1041 sDisTxSoftFlowCtl(cp);
1046 info->flags |= ROCKET_INITIALIZED;
1049 * Set up the tty->alt_speed kludge
1051 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_HI)
1052 info->port.tty->alt_speed = 57600;
1053 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_VHI)
1054 info->port.tty->alt_speed = 115200;
1055 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_SHI)
1056 info->port.tty->alt_speed = 230400;
1057 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_WARP)
1058 info->port.tty->alt_speed = 460800;
1060 configure_r_port(info, NULL);
1061 if (tty->termios->c_cflag & CBAUD) {
1066 /* Starts (or resets) the maint polling loop */
1067 mod_timer(&rocket_timer, jiffies + POLL_PERIOD);
1069 retval = block_til_ready(tty, filp, info);
1071 #ifdef ROCKET_DEBUG_OPEN
1072 printk(KERN_INFO "rp_open returning after block_til_ready with %d\n", retval);
1080 * Exception handler that closes a serial port. info->port.count is considered critical.
1082 static void rp_close(struct tty_struct *tty, struct file *filp)
1084 struct r_port *info = (struct r_port *) tty->driver_data;
1085 unsigned long flags;
1089 if (rocket_paranoia_check(info, "rp_close"))
1092 #ifdef ROCKET_DEBUG_OPEN
1093 printk(KERN_INFO "rp_close ttyR%d, count = %d\n", info->line, info->port.count);
1096 if (tty_hung_up_p(filp))
1098 spin_lock_irqsave(&info->slock, flags);
1100 if ((tty->count == 1) && (info->port.count != 1)) {
1102 * Uh, oh. tty->count is 1, which means that the tty
1103 * structure will be freed. Info->count should always
1104 * be one in these conditions. If it's greater than
1105 * one, we've got real problems, since it means the
1106 * serial port won't be shutdown.
1108 printk(KERN_WARNING "rp_close: bad serial port count; "
1109 "tty->count is 1, info->port.count is %d\n", info->port.count);
1110 info->port.count = 1;
1112 if (--info->port.count < 0) {
1113 printk(KERN_WARNING "rp_close: bad serial port count for "
1114 "ttyR%d: %d\n", info->line, info->port.count);
1115 info->port.count = 0;
1117 if (info->port.count) {
1118 spin_unlock_irqrestore(&info->slock, flags);
1121 info->flags |= ROCKET_CLOSING;
1122 spin_unlock_irqrestore(&info->slock, flags);
1124 cp = &info->channel;
1127 * Notify the line discpline to only process XON/XOFF characters
1132 * If transmission was throttled by the application request,
1133 * just flush the xmit buffer.
1135 if (tty->flow_stopped)
1136 rp_flush_buffer(tty);
1139 * Wait for the transmit buffer to clear
1141 if (info->port.closing_wait != ROCKET_CLOSING_WAIT_NONE)
1142 tty_wait_until_sent(tty, info->port.closing_wait);
1144 * Before we drop DTR, make sure the UART transmitter
1145 * has completely drained; this is especially
1146 * important if there is a transmit FIFO!
1148 timeout = (sGetTxCnt(cp) + 1) * HZ / info->cps;
1151 rp_wait_until_sent(tty, timeout);
1152 clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
1155 sDisInterrupts(cp, (TXINT_EN | MCINT_EN | RXINT_EN | SRCINT_EN | CHANINT_EN));
1157 sDisTxSoftFlowCtl(cp);
1165 rp_flush_buffer(tty);
1167 tty_ldisc_flush(tty);
1169 clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
1171 if (info->port.blocked_open) {
1172 if (info->port.close_delay) {
1173 msleep_interruptible(jiffies_to_msecs(info->port.close_delay));
1175 wake_up_interruptible(&info->port.open_wait);
1177 if (info->xmit_buf) {
1178 free_page((unsigned long) info->xmit_buf);
1179 info->xmit_buf = NULL;
1182 info->flags &= ~(ROCKET_INITIALIZED | ROCKET_CLOSING | ROCKET_NORMAL_ACTIVE);
1184 complete_all(&info->close_wait);
1185 atomic_dec(&rp_num_ports_open);
1187 #ifdef ROCKET_DEBUG_OPEN
1188 printk(KERN_INFO "rocket mod-- = %d...\n",
1189 atomic_read(&rp_num_ports_open));
1190 printk(KERN_INFO "rp_close ttyR%d complete shutdown\n", info->line);
1195 static void rp_set_termios(struct tty_struct *tty,
1196 struct ktermios *old_termios)
1198 struct r_port *info = (struct r_port *) tty->driver_data;
1202 if (rocket_paranoia_check(info, "rp_set_termios"))
1205 cflag = tty->termios->c_cflag;
1208 * This driver doesn't support CS5 or CS6
1210 if (((cflag & CSIZE) == CS5) || ((cflag & CSIZE) == CS6))
1211 tty->termios->c_cflag =
1212 ((cflag & ~CSIZE) | (old_termios->c_cflag & CSIZE));
1214 tty->termios->c_cflag &= ~CMSPAR;
1216 configure_r_port(info, old_termios);
1218 cp = &info->channel;
1220 /* Handle transition to B0 status */
1221 if ((old_termios->c_cflag & CBAUD) && !(tty->termios->c_cflag & CBAUD)) {
1226 /* Handle transition away from B0 status */
1227 if (!(old_termios->c_cflag & CBAUD) && (tty->termios->c_cflag & CBAUD)) {
1228 if (!tty->hw_stopped || !(tty->termios->c_cflag & CRTSCTS))
1233 if ((old_termios->c_cflag & CRTSCTS) && !(tty->termios->c_cflag & CRTSCTS)) {
1234 tty->hw_stopped = 0;
1239 static void rp_break(struct tty_struct *tty, int break_state)
1241 struct r_port *info = (struct r_port *) tty->driver_data;
1242 unsigned long flags;
1244 if (rocket_paranoia_check(info, "rp_break"))
1247 spin_lock_irqsave(&info->slock, flags);
1248 if (break_state == -1)
1249 sSendBreak(&info->channel);
1251 sClrBreak(&info->channel);
1252 spin_unlock_irqrestore(&info->slock, flags);
1256 * sGetChanRI used to be a macro in rocket_int.h. When the functionality for
1257 * the UPCI boards was added, it was decided to make this a function because
1258 * the macro was getting too complicated. All cases except the first one
1259 * (UPCIRingInd) are taken directly from the original macro.
1261 static int sGetChanRI(CHANNEL_T * ChP)
1263 CONTROLLER_t *CtlP = ChP->CtlP;
1264 int ChanNum = ChP->ChanNum;
1267 if (CtlP->UPCIRingInd)
1268 RingInd = !(sInB(CtlP->UPCIRingInd) & sBitMapSetTbl[ChanNum]);
1269 else if (CtlP->AltChanRingIndicator)
1270 RingInd = sInB((ByteIO_t) (ChP->ChanStat + 8)) & DSR_ACT;
1271 else if (CtlP->boardType == ROCKET_TYPE_PC104)
1272 RingInd = !(sInB(CtlP->AiopIO[3]) & sBitMapSetTbl[ChanNum]);
1277 /********************************************************************************************/
1278 /* Here are the routines used by rp_ioctl. These are all called from exception handlers. */
1281 * Returns the state of the serial modem control lines. These next 2 functions
1282 * are the way kernel versions > 2.5 handle modem control lines rather than IOCTLs.
1284 static int rp_tiocmget(struct tty_struct *tty, struct file *file)
1286 struct r_port *info = (struct r_port *)tty->driver_data;
1287 unsigned int control, result, ChanStatus;
1289 ChanStatus = sGetChanStatusLo(&info->channel);
1290 control = info->channel.TxControl[3];
1291 result = ((control & SET_RTS) ? TIOCM_RTS : 0) |
1292 ((control & SET_DTR) ? TIOCM_DTR : 0) |
1293 ((ChanStatus & CD_ACT) ? TIOCM_CAR : 0) |
1294 (sGetChanRI(&info->channel) ? TIOCM_RNG : 0) |
1295 ((ChanStatus & DSR_ACT) ? TIOCM_DSR : 0) |
1296 ((ChanStatus & CTS_ACT) ? TIOCM_CTS : 0);
1302 * Sets the modem control lines
1304 static int rp_tiocmset(struct tty_struct *tty, struct file *file,
1305 unsigned int set, unsigned int clear)
1307 struct r_port *info = (struct r_port *)tty->driver_data;
1309 if (set & TIOCM_RTS)
1310 info->channel.TxControl[3] |= SET_RTS;
1311 if (set & TIOCM_DTR)
1312 info->channel.TxControl[3] |= SET_DTR;
1313 if (clear & TIOCM_RTS)
1314 info->channel.TxControl[3] &= ~SET_RTS;
1315 if (clear & TIOCM_DTR)
1316 info->channel.TxControl[3] &= ~SET_DTR;
1318 out32(info->channel.IndexAddr, info->channel.TxControl);
1322 static int get_config(struct r_port *info, struct rocket_config __user *retinfo)
1324 struct rocket_config tmp;
1328 memset(&tmp, 0, sizeof (tmp));
1329 tmp.line = info->line;
1330 tmp.flags = info->flags;
1331 tmp.close_delay = info->port.close_delay;
1332 tmp.closing_wait = info->port.closing_wait;
1333 tmp.port = rcktpt_io_addr[(info->line >> 5) & 3];
1335 if (copy_to_user(retinfo, &tmp, sizeof (*retinfo)))
1340 static int set_config(struct r_port *info, struct rocket_config __user *new_info)
1342 struct rocket_config new_serial;
1344 if (copy_from_user(&new_serial, new_info, sizeof (new_serial)))
1347 if (!capable(CAP_SYS_ADMIN))
1349 if ((new_serial.flags & ~ROCKET_USR_MASK) != (info->flags & ~ROCKET_USR_MASK))
1351 info->flags = ((info->flags & ~ROCKET_USR_MASK) | (new_serial.flags & ROCKET_USR_MASK));
1352 configure_r_port(info, NULL);
1356 info->flags = ((info->flags & ~ROCKET_FLAGS) | (new_serial.flags & ROCKET_FLAGS));
1357 info->port.close_delay = new_serial.close_delay;
1358 info->port.closing_wait = new_serial.closing_wait;
1360 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_HI)
1361 info->port.tty->alt_speed = 57600;
1362 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_VHI)
1363 info->port.tty->alt_speed = 115200;
1364 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_SHI)
1365 info->port.tty->alt_speed = 230400;
1366 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_WARP)
1367 info->port.tty->alt_speed = 460800;
1369 configure_r_port(info, NULL);
1374 * This function fills in a rocket_ports struct with information
1375 * about what boards/ports are in the system. This info is passed
1376 * to user space. See setrocket.c where the info is used to create
1377 * the /dev/ttyRx ports.
1379 static int get_ports(struct r_port *info, struct rocket_ports __user *retports)
1381 struct rocket_ports tmp;
1386 memset(&tmp, 0, sizeof (tmp));
1387 tmp.tty_major = rocket_driver->major;
1389 for (board = 0; board < 4; board++) {
1390 tmp.rocketModel[board].model = rocketModel[board].model;
1391 strcpy(tmp.rocketModel[board].modelString, rocketModel[board].modelString);
1392 tmp.rocketModel[board].numPorts = rocketModel[board].numPorts;
1393 tmp.rocketModel[board].loadrm2 = rocketModel[board].loadrm2;
1394 tmp.rocketModel[board].startingPortNumber = rocketModel[board].startingPortNumber;
1396 if (copy_to_user(retports, &tmp, sizeof (*retports)))
1401 static int reset_rm2(struct r_port *info, void __user *arg)
1405 if (!capable(CAP_SYS_ADMIN))
1408 if (copy_from_user(&reset, arg, sizeof (int)))
1413 if (rcktpt_type[info->board] != ROCKET_TYPE_MODEMII &&
1414 rcktpt_type[info->board] != ROCKET_TYPE_MODEMIII)
1417 if (info->ctlp->BusType == isISA)
1418 sModemReset(info->ctlp, info->chan, reset);
1420 sPCIModemReset(info->ctlp, info->chan, reset);
1425 static int get_version(struct r_port *info, struct rocket_version __user *retvers)
1427 if (copy_to_user(retvers, &driver_version, sizeof (*retvers)))
1432 /* IOCTL call handler into the driver */
1433 static int rp_ioctl(struct tty_struct *tty, struct file *file,
1434 unsigned int cmd, unsigned long arg)
1436 struct r_port *info = (struct r_port *) tty->driver_data;
1437 void __user *argp = (void __user *)arg;
1440 if (cmd != RCKP_GET_PORTS && rocket_paranoia_check(info, "rp_ioctl"))
1446 case RCKP_GET_STRUCT:
1447 if (copy_to_user(argp, info, sizeof (struct r_port)))
1450 case RCKP_GET_CONFIG:
1451 ret = get_config(info, argp);
1453 case RCKP_SET_CONFIG:
1454 ret = set_config(info, argp);
1456 case RCKP_GET_PORTS:
1457 ret = get_ports(info, argp);
1459 case RCKP_RESET_RM2:
1460 ret = reset_rm2(info, argp);
1462 case RCKP_GET_VERSION:
1463 ret = get_version(info, argp);
1472 static void rp_send_xchar(struct tty_struct *tty, char ch)
1474 struct r_port *info = (struct r_port *) tty->driver_data;
1477 if (rocket_paranoia_check(info, "rp_send_xchar"))
1480 cp = &info->channel;
1482 sWriteTxPrioByte(cp, ch);
1484 sWriteTxByte(sGetTxRxDataIO(cp), ch);
1487 static void rp_throttle(struct tty_struct *tty)
1489 struct r_port *info = (struct r_port *) tty->driver_data;
1492 #ifdef ROCKET_DEBUG_THROTTLE
1493 printk(KERN_INFO "throttle %s: %d....\n", tty->name,
1494 tty->ldisc.chars_in_buffer(tty));
1497 if (rocket_paranoia_check(info, "rp_throttle"))
1500 cp = &info->channel;
1502 rp_send_xchar(tty, STOP_CHAR(tty));
1504 sClrRTS(&info->channel);
1507 static void rp_unthrottle(struct tty_struct *tty)
1509 struct r_port *info = (struct r_port *) tty->driver_data;
1511 #ifdef ROCKET_DEBUG_THROTTLE
1512 printk(KERN_INFO "unthrottle %s: %d....\n", tty->name,
1513 tty->ldisc.chars_in_buffer(tty));
1516 if (rocket_paranoia_check(info, "rp_throttle"))
1519 cp = &info->channel;
1521 rp_send_xchar(tty, START_CHAR(tty));
1523 sSetRTS(&info->channel);
1527 * ------------------------------------------------------------
1528 * rp_stop() and rp_start()
1530 * This routines are called before setting or resetting tty->stopped.
1531 * They enable or disable transmitter interrupts, as necessary.
1532 * ------------------------------------------------------------
1534 static void rp_stop(struct tty_struct *tty)
1536 struct r_port *info = (struct r_port *) tty->driver_data;
1538 #ifdef ROCKET_DEBUG_FLOW
1539 printk(KERN_INFO "stop %s: %d %d....\n", tty->name,
1540 info->xmit_cnt, info->xmit_fifo_room);
1543 if (rocket_paranoia_check(info, "rp_stop"))
1546 if (sGetTxCnt(&info->channel))
1547 sDisTransmit(&info->channel);
1550 static void rp_start(struct tty_struct *tty)
1552 struct r_port *info = (struct r_port *) tty->driver_data;
1554 #ifdef ROCKET_DEBUG_FLOW
1555 printk(KERN_INFO "start %s: %d %d....\n", tty->name,
1556 info->xmit_cnt, info->xmit_fifo_room);
1559 if (rocket_paranoia_check(info, "rp_stop"))
1562 sEnTransmit(&info->channel);
1563 set_bit((info->aiop * 8) + info->chan,
1564 (void *) &xmit_flags[info->board]);
1568 * rp_wait_until_sent() --- wait until the transmitter is empty
1570 static void rp_wait_until_sent(struct tty_struct *tty, int timeout)
1572 struct r_port *info = (struct r_port *) tty->driver_data;
1574 unsigned long orig_jiffies;
1575 int check_time, exit_time;
1578 if (rocket_paranoia_check(info, "rp_wait_until_sent"))
1581 cp = &info->channel;
1583 orig_jiffies = jiffies;
1584 #ifdef ROCKET_DEBUG_WAIT_UNTIL_SENT
1585 printk(KERN_INFO "In RP_wait_until_sent(%d) (jiff=%lu)...\n", timeout,
1587 printk(KERN_INFO "cps=%d...\n", info->cps);
1591 txcnt = sGetTxCnt(cp);
1593 if (sGetChanStatusLo(cp) & TXSHRMT)
1595 check_time = (HZ / info->cps) / 5;
1597 check_time = HZ * txcnt / info->cps;
1600 exit_time = orig_jiffies + timeout - jiffies;
1603 if (exit_time < check_time)
1604 check_time = exit_time;
1606 if (check_time == 0)
1608 #ifdef ROCKET_DEBUG_WAIT_UNTIL_SENT
1609 printk(KERN_INFO "txcnt = %d (jiff=%lu,check=%d)...\n", txcnt,
1610 jiffies, check_time);
1612 msleep_interruptible(jiffies_to_msecs(check_time));
1613 if (signal_pending(current))
1616 __set_current_state(TASK_RUNNING);
1618 #ifdef ROCKET_DEBUG_WAIT_UNTIL_SENT
1619 printk(KERN_INFO "txcnt = %d (jiff=%lu)...done\n", txcnt, jiffies);
1624 * rp_hangup() --- called by tty_hangup() when a hangup is signaled.
1626 static void rp_hangup(struct tty_struct *tty)
1629 struct r_port *info = (struct r_port *) tty->driver_data;
1631 if (rocket_paranoia_check(info, "rp_hangup"))
1634 #if (defined(ROCKET_DEBUG_OPEN) || defined(ROCKET_DEBUG_HANGUP))
1635 printk(KERN_INFO "rp_hangup of ttyR%d...\n", info->line);
1637 rp_flush_buffer(tty);
1638 if (info->flags & ROCKET_CLOSING)
1640 if (info->port.count)
1641 atomic_dec(&rp_num_ports_open);
1642 clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
1644 info->port.count = 0;
1645 info->flags &= ~ROCKET_NORMAL_ACTIVE;
1646 info->port.tty = NULL;
1648 cp = &info->channel;
1651 sDisInterrupts(cp, (TXINT_EN | MCINT_EN | RXINT_EN | SRCINT_EN | CHANINT_EN));
1653 sDisTxSoftFlowCtl(cp);
1655 info->flags &= ~ROCKET_INITIALIZED;
1657 wake_up_interruptible(&info->port.open_wait);
1661 * Exception handler - write char routine. The RocketPort driver uses a
1662 * double-buffering strategy, with the twist that if the in-memory CPU
1663 * buffer is empty, and there's space in the transmit FIFO, the
1664 * writing routines will write directly to transmit FIFO.
1665 * Write buffer and counters protected by spinlocks
1667 static int rp_put_char(struct tty_struct *tty, unsigned char ch)
1669 struct r_port *info = (struct r_port *) tty->driver_data;
1671 unsigned long flags;
1673 if (rocket_paranoia_check(info, "rp_put_char"))
1677 * Grab the port write mutex, locking out other processes that try to
1678 * write to this port
1680 mutex_lock(&info->write_mtx);
1682 #ifdef ROCKET_DEBUG_WRITE
1683 printk(KERN_INFO "rp_put_char %c...\n", ch);
1686 spin_lock_irqsave(&info->slock, flags);
1687 cp = &info->channel;
1689 if (!tty->stopped && !tty->hw_stopped && info->xmit_fifo_room == 0)
1690 info->xmit_fifo_room = TXFIFO_SIZE - sGetTxCnt(cp);
1692 if (tty->stopped || tty->hw_stopped || info->xmit_fifo_room == 0 || info->xmit_cnt != 0) {
1693 info->xmit_buf[info->xmit_head++] = ch;
1694 info->xmit_head &= XMIT_BUF_SIZE - 1;
1696 set_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
1698 sOutB(sGetTxRxDataIO(cp), ch);
1699 info->xmit_fifo_room--;
1701 spin_unlock_irqrestore(&info->slock, flags);
1702 mutex_unlock(&info->write_mtx);
1707 * Exception handler - write routine, called when user app writes to the device.
1708 * A per port write mutex is used to protect from another process writing to
1709 * this port at the same time. This other process could be running on the other CPU
1710 * or get control of the CPU if the copy_from_user() blocks due to a page fault (swapped out).
1711 * Spinlocks protect the info xmit members.
1713 static int rp_write(struct tty_struct *tty,
1714 const unsigned char *buf, int count)
1716 struct r_port *info = (struct r_port *) tty->driver_data;
1718 const unsigned char *b;
1720 unsigned long flags;
1722 if (count <= 0 || rocket_paranoia_check(info, "rp_write"))
1725 if (mutex_lock_interruptible(&info->write_mtx))
1726 return -ERESTARTSYS;
1728 #ifdef ROCKET_DEBUG_WRITE
1729 printk(KERN_INFO "rp_write %d chars...\n", count);
1731 cp = &info->channel;
1733 if (!tty->stopped && !tty->hw_stopped && info->xmit_fifo_room < count)
1734 info->xmit_fifo_room = TXFIFO_SIZE - sGetTxCnt(cp);
1737 * If the write queue for the port is empty, and there is FIFO space, stuff bytes
1738 * into FIFO. Use the write queue for temp storage.
1740 if (!tty->stopped && !tty->hw_stopped && info->xmit_cnt == 0 && info->xmit_fifo_room > 0) {
1741 c = min(count, info->xmit_fifo_room);
1744 /* Push data into FIFO, 2 bytes at a time */
1745 sOutStrW(sGetTxRxDataIO(cp), (unsigned short *) b, c / 2);
1747 /* If there is a byte remaining, write it */
1749 sOutB(sGetTxRxDataIO(cp), b[c - 1]);
1755 spin_lock_irqsave(&info->slock, flags);
1756 info->xmit_fifo_room -= c;
1757 spin_unlock_irqrestore(&info->slock, flags);
1760 /* If count is zero, we wrote it all and are done */
1764 /* Write remaining data into the port's xmit_buf */
1766 if (!info->port.tty) /* Seemingly obligatory check... */
1768 c = min(count, XMIT_BUF_SIZE - info->xmit_cnt - 1);
1769 c = min(c, XMIT_BUF_SIZE - info->xmit_head);
1774 memcpy(info->xmit_buf + info->xmit_head, b, c);
1776 spin_lock_irqsave(&info->slock, flags);
1778 (info->xmit_head + c) & (XMIT_BUF_SIZE - 1);
1779 info->xmit_cnt += c;
1780 spin_unlock_irqrestore(&info->slock, flags);
1787 if ((retval > 0) && !tty->stopped && !tty->hw_stopped)
1788 set_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
1791 if (info->xmit_cnt < WAKEUP_CHARS) {
1793 #ifdef ROCKETPORT_HAVE_POLL_WAIT
1794 wake_up_interruptible(&tty->poll_wait);
1797 mutex_unlock(&info->write_mtx);
1802 * Return the number of characters that can be sent. We estimate
1803 * only using the in-memory transmit buffer only, and ignore the
1804 * potential space in the transmit FIFO.
1806 static int rp_write_room(struct tty_struct *tty)
1808 struct r_port *info = (struct r_port *) tty->driver_data;
1811 if (rocket_paranoia_check(info, "rp_write_room"))
1814 ret = XMIT_BUF_SIZE - info->xmit_cnt - 1;
1817 #ifdef ROCKET_DEBUG_WRITE
1818 printk(KERN_INFO "rp_write_room returns %d...\n", ret);
1824 * Return the number of characters in the buffer. Again, this only
1825 * counts those characters in the in-memory transmit buffer.
1827 static int rp_chars_in_buffer(struct tty_struct *tty)
1829 struct r_port *info = (struct r_port *) tty->driver_data;
1832 if (rocket_paranoia_check(info, "rp_chars_in_buffer"))
1835 cp = &info->channel;
1837 #ifdef ROCKET_DEBUG_WRITE
1838 printk(KERN_INFO "rp_chars_in_buffer returns %d...\n", info->xmit_cnt);
1840 return info->xmit_cnt;
1844 * Flushes the TX fifo for a port, deletes data in the xmit_buf stored in the
1845 * r_port struct for the port. Note that spinlock are used to protect info members,
1846 * do not call this function if the spinlock is already held.
1848 static void rp_flush_buffer(struct tty_struct *tty)
1850 struct r_port *info = (struct r_port *) tty->driver_data;
1852 unsigned long flags;
1854 if (rocket_paranoia_check(info, "rp_flush_buffer"))
1857 spin_lock_irqsave(&info->slock, flags);
1858 info->xmit_cnt = info->xmit_head = info->xmit_tail = 0;
1859 spin_unlock_irqrestore(&info->slock, flags);
1861 #ifdef ROCKETPORT_HAVE_POLL_WAIT
1862 wake_up_interruptible(&tty->poll_wait);
1866 cp = &info->channel;
1872 static struct pci_device_id __devinitdata rocket_pci_ids[] = {
1873 { PCI_DEVICE(PCI_VENDOR_ID_RP, PCI_ANY_ID) },
1876 MODULE_DEVICE_TABLE(pci, rocket_pci_ids);
1879 * Called when a PCI card is found. Retrieves and stores model information,
1880 * init's aiopic and serial port hardware.
1881 * Inputs: i is the board number (0-n)
1883 static __init int register_PCI(int i, struct pci_dev *dev)
1885 int num_aiops, aiop, max_num_aiops, num_chan, chan;
1886 unsigned int aiopio[MAX_AIOPS_PER_BOARD];
1887 char *str, *board_type;
1891 int altChanRingIndicator = 0;
1892 int ports_per_aiop = 8;
1893 WordIO_t ConfigIO = 0;
1894 ByteIO_t UPCIRingInd = 0;
1896 if (!dev || pci_enable_device(dev))
1899 rcktpt_io_addr[i] = pci_resource_start(dev, 0);
1901 rcktpt_type[i] = ROCKET_TYPE_NORMAL;
1902 rocketModel[i].loadrm2 = 0;
1903 rocketModel[i].startingPortNumber = nextLineNumber;
1905 /* Depending on the model, set up some config variables */
1906 switch (dev->device) {
1907 case PCI_DEVICE_ID_RP4QUAD:
1911 rocketModel[i].model = MODEL_RP4QUAD;
1912 strcpy(rocketModel[i].modelString, "RocketPort 4 port w/quad cable");
1913 rocketModel[i].numPorts = 4;
1915 case PCI_DEVICE_ID_RP8OCTA:
1918 rocketModel[i].model = MODEL_RP8OCTA;
1919 strcpy(rocketModel[i].modelString, "RocketPort 8 port w/octa cable");
1920 rocketModel[i].numPorts = 8;
1922 case PCI_DEVICE_ID_URP8OCTA:
1925 rocketModel[i].model = MODEL_UPCI_RP8OCTA;
1926 strcpy(rocketModel[i].modelString, "RocketPort UPCI 8 port w/octa cable");
1927 rocketModel[i].numPorts = 8;
1929 case PCI_DEVICE_ID_RP8INTF:
1932 rocketModel[i].model = MODEL_RP8INTF;
1933 strcpy(rocketModel[i].modelString, "RocketPort 8 port w/external I/F");
1934 rocketModel[i].numPorts = 8;
1936 case PCI_DEVICE_ID_URP8INTF:
1939 rocketModel[i].model = MODEL_UPCI_RP8INTF;
1940 strcpy(rocketModel[i].modelString, "RocketPort UPCI 8 port w/external I/F");
1941 rocketModel[i].numPorts = 8;
1943 case PCI_DEVICE_ID_RP8J:
1946 rocketModel[i].model = MODEL_RP8J;
1947 strcpy(rocketModel[i].modelString, "RocketPort 8 port w/RJ11 connectors");
1948 rocketModel[i].numPorts = 8;
1950 case PCI_DEVICE_ID_RP4J:
1954 rocketModel[i].model = MODEL_RP4J;
1955 strcpy(rocketModel[i].modelString, "RocketPort 4 port w/RJ45 connectors");
1956 rocketModel[i].numPorts = 4;
1958 case PCI_DEVICE_ID_RP8SNI:
1959 str = "8 (DB78 Custom)";
1961 rocketModel[i].model = MODEL_RP8SNI;
1962 strcpy(rocketModel[i].modelString, "RocketPort 8 port w/ custom DB78");
1963 rocketModel[i].numPorts = 8;
1965 case PCI_DEVICE_ID_RP16SNI:
1966 str = "16 (DB78 Custom)";
1968 rocketModel[i].model = MODEL_RP16SNI;
1969 strcpy(rocketModel[i].modelString, "RocketPort 16 port w/ custom DB78");
1970 rocketModel[i].numPorts = 16;
1972 case PCI_DEVICE_ID_RP16INTF:
1975 rocketModel[i].model = MODEL_RP16INTF;
1976 strcpy(rocketModel[i].modelString, "RocketPort 16 port w/external I/F");
1977 rocketModel[i].numPorts = 16;
1979 case PCI_DEVICE_ID_URP16INTF:
1982 rocketModel[i].model = MODEL_UPCI_RP16INTF;
1983 strcpy(rocketModel[i].modelString, "RocketPort UPCI 16 port w/external I/F");
1984 rocketModel[i].numPorts = 16;
1986 case PCI_DEVICE_ID_CRP16INTF:
1989 rocketModel[i].model = MODEL_CPCI_RP16INTF;
1990 strcpy(rocketModel[i].modelString, "RocketPort Compact PCI 16 port w/external I/F");
1991 rocketModel[i].numPorts = 16;
1993 case PCI_DEVICE_ID_RP32INTF:
1996 rocketModel[i].model = MODEL_RP32INTF;
1997 strcpy(rocketModel[i].modelString, "RocketPort 32 port w/external I/F");
1998 rocketModel[i].numPorts = 32;
2000 case PCI_DEVICE_ID_URP32INTF:
2003 rocketModel[i].model = MODEL_UPCI_RP32INTF;
2004 strcpy(rocketModel[i].modelString, "RocketPort UPCI 32 port w/external I/F");
2005 rocketModel[i].numPorts = 32;
2007 case PCI_DEVICE_ID_RPP4:
2008 str = "Plus Quadcable";
2011 altChanRingIndicator++;
2013 rocketModel[i].model = MODEL_RPP4;
2014 strcpy(rocketModel[i].modelString, "RocketPort Plus 4 port");
2015 rocketModel[i].numPorts = 4;
2017 case PCI_DEVICE_ID_RPP8:
2018 str = "Plus Octacable";
2021 altChanRingIndicator++;
2023 rocketModel[i].model = MODEL_RPP8;
2024 strcpy(rocketModel[i].modelString, "RocketPort Plus 8 port");
2025 rocketModel[i].numPorts = 8;
2027 case PCI_DEVICE_ID_RP2_232:
2028 str = "Plus 2 (RS-232)";
2031 altChanRingIndicator++;
2033 rocketModel[i].model = MODEL_RP2_232;
2034 strcpy(rocketModel[i].modelString, "RocketPort Plus 2 port RS232");
2035 rocketModel[i].numPorts = 2;
2037 case PCI_DEVICE_ID_RP2_422:
2038 str = "Plus 2 (RS-422)";
2041 altChanRingIndicator++;
2043 rocketModel[i].model = MODEL_RP2_422;
2044 strcpy(rocketModel[i].modelString, "RocketPort Plus 2 port RS422");
2045 rocketModel[i].numPorts = 2;
2047 case PCI_DEVICE_ID_RP6M:
2053 /* If revision is 1, the rocketmodem flash must be loaded.
2054 * If it is 2 it is a "socketed" version. */
2055 if (dev->revision == 1) {
2056 rcktpt_type[i] = ROCKET_TYPE_MODEMII;
2057 rocketModel[i].loadrm2 = 1;
2059 rcktpt_type[i] = ROCKET_TYPE_MODEM;
2062 rocketModel[i].model = MODEL_RP6M;
2063 strcpy(rocketModel[i].modelString, "RocketModem 6 port");
2064 rocketModel[i].numPorts = 6;
2066 case PCI_DEVICE_ID_RP4M:
2070 if (dev->revision == 1) {
2071 rcktpt_type[i] = ROCKET_TYPE_MODEMII;
2072 rocketModel[i].loadrm2 = 1;
2074 rcktpt_type[i] = ROCKET_TYPE_MODEM;
2077 rocketModel[i].model = MODEL_RP4M;
2078 strcpy(rocketModel[i].modelString, "RocketModem 4 port");
2079 rocketModel[i].numPorts = 4;
2082 str = "(unknown/unsupported)";
2088 * Check for UPCI boards.
2091 switch (dev->device) {
2092 case PCI_DEVICE_ID_URP32INTF:
2093 case PCI_DEVICE_ID_URP8INTF:
2094 case PCI_DEVICE_ID_URP16INTF:
2095 case PCI_DEVICE_ID_CRP16INTF:
2096 case PCI_DEVICE_ID_URP8OCTA:
2097 rcktpt_io_addr[i] = pci_resource_start(dev, 2);
2098 ConfigIO = pci_resource_start(dev, 1);
2099 if (dev->device == PCI_DEVICE_ID_URP8OCTA) {
2100 UPCIRingInd = rcktpt_io_addr[i] + _PCI_9030_RING_IND;
2103 * Check for octa or quad cable.
2106 (sInW(ConfigIO + _PCI_9030_GPIO_CTRL) &
2107 PCI_GPIO_CTRL_8PORT)) {
2110 rocketModel[i].numPorts = 4;
2114 case PCI_DEVICE_ID_UPCI_RM3_8PORT:
2117 rocketModel[i].model = MODEL_UPCI_RM3_8PORT;
2118 strcpy(rocketModel[i].modelString, "RocketModem III 8 port");
2119 rocketModel[i].numPorts = 8;
2120 rcktpt_io_addr[i] = pci_resource_start(dev, 2);
2121 UPCIRingInd = rcktpt_io_addr[i] + _PCI_9030_RING_IND;
2122 ConfigIO = pci_resource_start(dev, 1);
2123 rcktpt_type[i] = ROCKET_TYPE_MODEMIII;
2125 case PCI_DEVICE_ID_UPCI_RM3_4PORT:
2128 rocketModel[i].model = MODEL_UPCI_RM3_4PORT;
2129 strcpy(rocketModel[i].modelString, "RocketModem III 4 port");
2130 rocketModel[i].numPorts = 4;
2131 rcktpt_io_addr[i] = pci_resource_start(dev, 2);
2132 UPCIRingInd = rcktpt_io_addr[i] + _PCI_9030_RING_IND;
2133 ConfigIO = pci_resource_start(dev, 1);
2134 rcktpt_type[i] = ROCKET_TYPE_MODEMIII;
2140 switch (rcktpt_type[i]) {
2141 case ROCKET_TYPE_MODEM:
2142 board_type = "RocketModem";
2144 case ROCKET_TYPE_MODEMII:
2145 board_type = "RocketModem II";
2147 case ROCKET_TYPE_MODEMIII:
2148 board_type = "RocketModem III";
2151 board_type = "RocketPort";
2156 sClockPrescale = 0x12; /* mod 2 (divide by 3) */
2157 rp_baud_base[i] = 921600;
2160 * If support_low_speed is set, use the slow clock
2161 * prescale, which supports 50 bps
2163 if (support_low_speed) {
2164 /* mod 9 (divide by 10) prescale */
2165 sClockPrescale = 0x19;
2166 rp_baud_base[i] = 230400;
2168 /* mod 4 (devide by 5) prescale */
2169 sClockPrescale = 0x14;
2170 rp_baud_base[i] = 460800;
2174 for (aiop = 0; aiop < max_num_aiops; aiop++)
2175 aiopio[aiop] = rcktpt_io_addr[i] + (aiop * 0x40);
2176 ctlp = sCtlNumToCtlPtr(i);
2177 num_aiops = sPCIInitController(ctlp, i, aiopio, max_num_aiops, ConfigIO, 0, FREQ_DIS, 0, altChanRingIndicator, UPCIRingInd);
2178 for (aiop = 0; aiop < max_num_aiops; aiop++)
2179 ctlp->AiopNumChan[aiop] = ports_per_aiop;
2181 dev_info(&dev->dev, "comtrol PCI controller #%d found at "
2182 "address %04lx, %d AIOP(s) (%s), creating ttyR%d - %ld\n",
2183 i, rcktpt_io_addr[i], num_aiops, rocketModel[i].modelString,
2184 rocketModel[i].startingPortNumber,
2185 rocketModel[i].startingPortNumber + rocketModel[i].numPorts-1);
2187 if (num_aiops <= 0) {
2188 rcktpt_io_addr[i] = 0;
2193 /* Reset the AIOPIC, init the serial ports */
2194 for (aiop = 0; aiop < num_aiops; aiop++) {
2195 sResetAiopByNum(ctlp, aiop);
2196 num_chan = ports_per_aiop;
2197 for (chan = 0; chan < num_chan; chan++)
2198 init_r_port(i, aiop, chan, dev);
2201 /* Rocket modems must be reset */
2202 if ((rcktpt_type[i] == ROCKET_TYPE_MODEM) ||
2203 (rcktpt_type[i] == ROCKET_TYPE_MODEMII) ||
2204 (rcktpt_type[i] == ROCKET_TYPE_MODEMIII)) {
2205 num_chan = ports_per_aiop;
2206 for (chan = 0; chan < num_chan; chan++)
2207 sPCIModemReset(ctlp, chan, 1);
2209 for (chan = 0; chan < num_chan; chan++)
2210 sPCIModemReset(ctlp, chan, 0);
2212 rmSpeakerReset(ctlp, rocketModel[i].model);
2218 * Probes for PCI cards, inits them if found
2219 * Input: board_found = number of ISA boards already found, or the
2220 * starting board number
2221 * Returns: Number of PCI boards found
2223 static int __init init_PCI(int boards_found)
2225 struct pci_dev *dev = NULL;
2228 /* Work through the PCI device list, pulling out ours */
2229 while ((dev = pci_get_device(PCI_VENDOR_ID_RP, PCI_ANY_ID, dev))) {
2230 if (register_PCI(count + boards_found, dev))
2236 #endif /* CONFIG_PCI */
2239 * Probes for ISA cards
2240 * Input: i = the board number to look for
2241 * Returns: 1 if board found, 0 else
2243 static int __init init_ISA(int i)
2245 int num_aiops, num_chan = 0, total_num_chan = 0;
2247 unsigned int aiopio[MAX_AIOPS_PER_BOARD];
2251 /* If io_addr is zero, no board configured */
2252 if (rcktpt_io_addr[i] == 0)
2255 /* Reserve the IO region */
2256 if (!request_region(rcktpt_io_addr[i], 64, "Comtrol RocketPort")) {
2257 printk(KERN_ERR "Unable to reserve IO region for configured "
2258 "ISA RocketPort at address 0x%lx, board not "
2259 "installed...\n", rcktpt_io_addr[i]);
2260 rcktpt_io_addr[i] = 0;
2264 ctlp = sCtlNumToCtlPtr(i);
2266 ctlp->boardType = rcktpt_type[i];
2268 switch (rcktpt_type[i]) {
2269 case ROCKET_TYPE_PC104:
2270 type_string = "(PC104)";
2272 case ROCKET_TYPE_MODEM:
2273 type_string = "(RocketModem)";
2275 case ROCKET_TYPE_MODEMII:
2276 type_string = "(RocketModem II)";
2284 * If support_low_speed is set, use the slow clock prescale,
2285 * which supports 50 bps
2287 if (support_low_speed) {
2288 sClockPrescale = 0x19; /* mod 9 (divide by 10) prescale */
2289 rp_baud_base[i] = 230400;
2291 sClockPrescale = 0x14; /* mod 4 (devide by 5) prescale */
2292 rp_baud_base[i] = 460800;
2295 for (aiop = 0; aiop < MAX_AIOPS_PER_BOARD; aiop++)
2296 aiopio[aiop] = rcktpt_io_addr[i] + (aiop * 0x400);
2298 num_aiops = sInitController(ctlp, i, controller + (i * 0x400), aiopio, MAX_AIOPS_PER_BOARD, 0, FREQ_DIS, 0);
2300 if (ctlp->boardType == ROCKET_TYPE_PC104) {
2301 sEnAiop(ctlp, 2); /* only one AIOPIC, but these */
2302 sEnAiop(ctlp, 3); /* CSels used for other stuff */
2305 /* If something went wrong initing the AIOP's release the ISA IO memory */
2306 if (num_aiops <= 0) {
2307 release_region(rcktpt_io_addr[i], 64);
2308 rcktpt_io_addr[i] = 0;
2312 rocketModel[i].startingPortNumber = nextLineNumber;
2314 for (aiop = 0; aiop < num_aiops; aiop++) {
2315 sResetAiopByNum(ctlp, aiop);
2316 sEnAiop(ctlp, aiop);
2317 num_chan = sGetAiopNumChan(ctlp, aiop);
2318 total_num_chan += num_chan;
2319 for (chan = 0; chan < num_chan; chan++)
2320 init_r_port(i, aiop, chan, NULL);
2323 if ((rcktpt_type[i] == ROCKET_TYPE_MODEM) || (rcktpt_type[i] == ROCKET_TYPE_MODEMII)) {
2324 num_chan = sGetAiopNumChan(ctlp, 0);
2325 total_num_chan = num_chan;
2326 for (chan = 0; chan < num_chan; chan++)
2327 sModemReset(ctlp, chan, 1);
2329 for (chan = 0; chan < num_chan; chan++)
2330 sModemReset(ctlp, chan, 0);
2332 strcpy(rocketModel[i].modelString, "RocketModem ISA");
2334 strcpy(rocketModel[i].modelString, "RocketPort ISA");
2336 rocketModel[i].numPorts = total_num_chan;
2337 rocketModel[i].model = MODEL_ISA;
2339 printk(KERN_INFO "RocketPort ISA card #%d found at 0x%lx - %d AIOPs %s\n",
2340 i, rcktpt_io_addr[i], num_aiops, type_string);
2342 printk(KERN_INFO "Installing %s, creating /dev/ttyR%d - %ld\n",
2343 rocketModel[i].modelString,
2344 rocketModel[i].startingPortNumber,
2345 rocketModel[i].startingPortNumber +
2346 rocketModel[i].numPorts - 1);
2351 static const struct tty_operations rocket_ops = {
2355 .put_char = rp_put_char,
2356 .write_room = rp_write_room,
2357 .chars_in_buffer = rp_chars_in_buffer,
2358 .flush_buffer = rp_flush_buffer,
2360 .throttle = rp_throttle,
2361 .unthrottle = rp_unthrottle,
2362 .set_termios = rp_set_termios,
2365 .hangup = rp_hangup,
2366 .break_ctl = rp_break,
2367 .send_xchar = rp_send_xchar,
2368 .wait_until_sent = rp_wait_until_sent,
2369 .tiocmget = rp_tiocmget,
2370 .tiocmset = rp_tiocmset,
2374 * The module "startup" routine; it's run when the module is loaded.
2376 static int __init rp_init(void)
2378 int ret = -ENOMEM, pci_boards_found, isa_boards_found, i;
2380 printk(KERN_INFO "RocketPort device driver module, version %s, %s\n",
2381 ROCKET_VERSION, ROCKET_DATE);
2383 rocket_driver = alloc_tty_driver(MAX_RP_PORTS);
2388 * If board 1 is non-zero, there is at least one ISA configured. If controller is
2389 * zero, use the default controller IO address of board1 + 0x40.
2392 if (controller == 0)
2393 controller = board1 + 0x40;
2395 controller = 0; /* Used as a flag, meaning no ISA boards */
2398 /* If an ISA card is configured, reserve the 4 byte IO space for the Mudbac controller */
2399 if (controller && (!request_region(controller, 4, "Comtrol RocketPort"))) {
2400 printk(KERN_ERR "Unable to reserve IO region for first "
2401 "configured ISA RocketPort controller 0x%lx. "
2402 "Driver exiting\n", controller);
2407 /* Store ISA variable retrieved from command line or .conf file. */
2408 rcktpt_io_addr[0] = board1;
2409 rcktpt_io_addr[1] = board2;
2410 rcktpt_io_addr[2] = board3;
2411 rcktpt_io_addr[3] = board4;
2413 rcktpt_type[0] = modem1 ? ROCKET_TYPE_MODEM : ROCKET_TYPE_NORMAL;
2414 rcktpt_type[0] = pc104_1[0] ? ROCKET_TYPE_PC104 : rcktpt_type[0];
2415 rcktpt_type[1] = modem2 ? ROCKET_TYPE_MODEM : ROCKET_TYPE_NORMAL;
2416 rcktpt_type[1] = pc104_2[0] ? ROCKET_TYPE_PC104 : rcktpt_type[1];
2417 rcktpt_type[2] = modem3 ? ROCKET_TYPE_MODEM : ROCKET_TYPE_NORMAL;
2418 rcktpt_type[2] = pc104_3[0] ? ROCKET_TYPE_PC104 : rcktpt_type[2];
2419 rcktpt_type[3] = modem4 ? ROCKET_TYPE_MODEM : ROCKET_TYPE_NORMAL;
2420 rcktpt_type[3] = pc104_4[0] ? ROCKET_TYPE_PC104 : rcktpt_type[3];
2423 * Set up the tty driver structure and then register this
2424 * driver with the tty layer.
2427 rocket_driver->owner = THIS_MODULE;
2428 rocket_driver->flags = TTY_DRIVER_DYNAMIC_DEV;
2429 rocket_driver->name = "ttyR";
2430 rocket_driver->driver_name = "Comtrol RocketPort";
2431 rocket_driver->major = TTY_ROCKET_MAJOR;
2432 rocket_driver->minor_start = 0;
2433 rocket_driver->type = TTY_DRIVER_TYPE_SERIAL;
2434 rocket_driver->subtype = SERIAL_TYPE_NORMAL;
2435 rocket_driver->init_termios = tty_std_termios;
2436 rocket_driver->init_termios.c_cflag =
2437 B9600 | CS8 | CREAD | HUPCL | CLOCAL;
2438 rocket_driver->init_termios.c_ispeed = 9600;
2439 rocket_driver->init_termios.c_ospeed = 9600;
2440 #ifdef ROCKET_SOFT_FLOW
2441 rocket_driver->flags |= TTY_DRIVER_REAL_RAW;
2443 tty_set_operations(rocket_driver, &rocket_ops);
2445 ret = tty_register_driver(rocket_driver);
2447 printk(KERN_ERR "Couldn't install tty RocketPort driver\n");
2451 #ifdef ROCKET_DEBUG_OPEN
2452 printk(KERN_INFO "RocketPort driver is major %d\n", rocket_driver.major);
2456 * OK, let's probe each of the controllers looking for boards. Any boards found
2457 * will be initialized here.
2459 isa_boards_found = 0;
2460 pci_boards_found = 0;
2462 for (i = 0; i < NUM_BOARDS; i++) {
2468 if (isa_boards_found < NUM_BOARDS)
2469 pci_boards_found = init_PCI(isa_boards_found);
2472 max_board = pci_boards_found + isa_boards_found;
2474 if (max_board == 0) {
2475 printk(KERN_ERR "No rocketport ports found; unloading driver\n");
2482 tty_unregister_driver(rocket_driver);
2484 put_tty_driver(rocket_driver);
2490 static void rp_cleanup_module(void)
2495 del_timer_sync(&rocket_timer);
2497 retval = tty_unregister_driver(rocket_driver);
2499 printk(KERN_ERR "Error %d while trying to unregister "
2500 "rocketport driver\n", -retval);
2502 for (i = 0; i < MAX_RP_PORTS; i++)
2504 tty_unregister_device(rocket_driver, i);
2508 put_tty_driver(rocket_driver);
2510 for (i = 0; i < NUM_BOARDS; i++) {
2511 if (rcktpt_io_addr[i] <= 0 || is_PCI[i])
2513 release_region(rcktpt_io_addr[i], 64);
2516 release_region(controller, 4);
2519 /***************************************************************************
2520 Function: sInitController
2521 Purpose: Initialization of controller global registers and controller
2523 Call: sInitController(CtlP,CtlNum,MudbacIO,AiopIOList,AiopIOListSize,
2524 IRQNum,Frequency,PeriodicOnly)
2525 CONTROLLER_T *CtlP; Ptr to controller structure
2526 int CtlNum; Controller number
2527 ByteIO_t MudbacIO; Mudbac base I/O address.
2528 ByteIO_t *AiopIOList; List of I/O addresses for each AIOP.
2529 This list must be in the order the AIOPs will be found on the
2530 controller. Once an AIOP in the list is not found, it is
2531 assumed that there are no more AIOPs on the controller.
2532 int AiopIOListSize; Number of addresses in AiopIOList
2533 int IRQNum; Interrupt Request number. Can be any of the following:
2534 0: Disable global interrupts
2543 Byte_t Frequency: A flag identifying the frequency
2544 of the periodic interrupt, can be any one of the following:
2545 FREQ_DIS - periodic interrupt disabled
2546 FREQ_137HZ - 137 Hertz
2547 FREQ_69HZ - 69 Hertz
2548 FREQ_34HZ - 34 Hertz
2549 FREQ_17HZ - 17 Hertz
2552 If IRQNum is set to 0 the Frequency parameter is
2553 overidden, it is forced to a value of FREQ_DIS.
2554 int PeriodicOnly: 1 if all interrupts except the periodic
2555 interrupt are to be blocked.
2556 0 is both the periodic interrupt and
2557 other channel interrupts are allowed.
2558 If IRQNum is set to 0 the PeriodicOnly parameter is
2559 overidden, it is forced to a value of 0.
2560 Return: int: Number of AIOPs on the controller, or CTLID_NULL if controller
2561 initialization failed.
2564 If periodic interrupts are to be disabled but AIOP interrupts
2565 are allowed, set Frequency to FREQ_DIS and PeriodicOnly to 0.
2567 If interrupts are to be completely disabled set IRQNum to 0.
2569 Setting Frequency to FREQ_DIS and PeriodicOnly to 1 is an
2570 invalid combination.
2572 This function performs initialization of global interrupt modes,
2573 but it does not actually enable global interrupts. To enable
2574 and disable global interrupts use functions sEnGlobalInt() and
2575 sDisGlobalInt(). Enabling of global interrupts is normally not
2576 done until all other initializations are complete.
2578 Even if interrupts are globally enabled, they must also be
2579 individually enabled for each channel that is to generate
2582 Warnings: No range checking on any of the parameters is done.
2584 No context switches are allowed while executing this function.
2586 After this function all AIOPs on the controller are disabled,
2587 they can be enabled with sEnAiop().
2589 static int sInitController(CONTROLLER_T * CtlP, int CtlNum, ByteIO_t MudbacIO,
2590 ByteIO_t * AiopIOList, int AiopIOListSize,
2591 int IRQNum, Byte_t Frequency, int PeriodicOnly)
2597 CtlP->AiopIntrBits = aiop_intr_bits;
2598 CtlP->AltChanRingIndicator = 0;
2599 CtlP->CtlNum = CtlNum;
2600 CtlP->CtlID = CTLID_0001; /* controller release 1 */
2601 CtlP->BusType = isISA;
2602 CtlP->MBaseIO = MudbacIO;
2603 CtlP->MReg1IO = MudbacIO + 1;
2604 CtlP->MReg2IO = MudbacIO + 2;
2605 CtlP->MReg3IO = MudbacIO + 3;
2607 CtlP->MReg2 = 0; /* interrupt disable */
2608 CtlP->MReg3 = 0; /* no periodic interrupts */
2610 if (sIRQMap[IRQNum] == 0) { /* interrupts globally disabled */
2611 CtlP->MReg2 = 0; /* interrupt disable */
2612 CtlP->MReg3 = 0; /* no periodic interrupts */
2614 CtlP->MReg2 = sIRQMap[IRQNum]; /* set IRQ number */
2615 CtlP->MReg3 = Frequency; /* set frequency */
2616 if (PeriodicOnly) { /* periodic interrupt only */
2617 CtlP->MReg3 |= PERIODIC_ONLY;
2621 sOutB(CtlP->MReg2IO, CtlP->MReg2);
2622 sOutB(CtlP->MReg3IO, CtlP->MReg3);
2623 sControllerEOI(CtlP); /* clear EOI if warm init */
2626 for (i = done = 0; i < AiopIOListSize; i++) {
2628 CtlP->AiopIO[i] = (WordIO_t) io;
2629 CtlP->AiopIntChanIO[i] = io + _INT_CHAN;
2630 sOutB(CtlP->MReg2IO, CtlP->MReg2 | (i & 0x03)); /* AIOP index */
2631 sOutB(MudbacIO, (Byte_t) (io >> 6)); /* set up AIOP I/O in MUDBAC */
2634 sEnAiop(CtlP, i); /* enable the AIOP */
2635 CtlP->AiopID[i] = sReadAiopID(io); /* read AIOP ID */
2636 if (CtlP->AiopID[i] == AIOPID_NULL) /* if AIOP does not exist */
2637 done = 1; /* done looking for AIOPs */
2639 CtlP->AiopNumChan[i] = sReadAiopNumChan((WordIO_t) io); /* num channels in AIOP */
2640 sOutW((WordIO_t) io + _INDX_ADDR, _CLK_PRE); /* clock prescaler */
2641 sOutB(io + _INDX_DATA, sClockPrescale);
2642 CtlP->NumAiop++; /* bump count of AIOPs */
2644 sDisAiop(CtlP, i); /* disable AIOP */
2647 if (CtlP->NumAiop == 0)
2650 return (CtlP->NumAiop);
2653 /***************************************************************************
2654 Function: sPCIInitController
2655 Purpose: Initialization of controller global registers and controller
2657 Call: sPCIInitController(CtlP,CtlNum,AiopIOList,AiopIOListSize,
2658 IRQNum,Frequency,PeriodicOnly)
2659 CONTROLLER_T *CtlP; Ptr to controller structure
2660 int CtlNum; Controller number
2661 ByteIO_t *AiopIOList; List of I/O addresses for each AIOP.
2662 This list must be in the order the AIOPs will be found on the
2663 controller. Once an AIOP in the list is not found, it is
2664 assumed that there are no more AIOPs on the controller.
2665 int AiopIOListSize; Number of addresses in AiopIOList
2666 int IRQNum; Interrupt Request number. Can be any of the following:
2667 0: Disable global interrupts
2676 Byte_t Frequency: A flag identifying the frequency
2677 of the periodic interrupt, can be any one of the following:
2678 FREQ_DIS - periodic interrupt disabled
2679 FREQ_137HZ - 137 Hertz
2680 FREQ_69HZ - 69 Hertz
2681 FREQ_34HZ - 34 Hertz
2682 FREQ_17HZ - 17 Hertz
2685 If IRQNum is set to 0 the Frequency parameter is
2686 overidden, it is forced to a value of FREQ_DIS.
2687 int PeriodicOnly: 1 if all interrupts except the periodic
2688 interrupt are to be blocked.
2689 0 is both the periodic interrupt and
2690 other channel interrupts are allowed.
2691 If IRQNum is set to 0 the PeriodicOnly parameter is
2692 overidden, it is forced to a value of 0.
2693 Return: int: Number of AIOPs on the controller, or CTLID_NULL if controller
2694 initialization failed.
2697 If periodic interrupts are to be disabled but AIOP interrupts
2698 are allowed, set Frequency to FREQ_DIS and PeriodicOnly to 0.
2700 If interrupts are to be completely disabled set IRQNum to 0.
2702 Setting Frequency to FREQ_DIS and PeriodicOnly to 1 is an
2703 invalid combination.
2705 This function performs initialization of global interrupt modes,
2706 but it does not actually enable global interrupts. To enable
2707 and disable global interrupts use functions sEnGlobalInt() and
2708 sDisGlobalInt(). Enabling of global interrupts is normally not
2709 done until all other initializations are complete.
2711 Even if interrupts are globally enabled, they must also be
2712 individually enabled for each channel that is to generate
2715 Warnings: No range checking on any of the parameters is done.
2717 No context switches are allowed while executing this function.
2719 After this function all AIOPs on the controller are disabled,
2720 they can be enabled with sEnAiop().
2722 static int sPCIInitController(CONTROLLER_T * CtlP, int CtlNum,
2723 ByteIO_t * AiopIOList, int AiopIOListSize,
2724 WordIO_t ConfigIO, int IRQNum, Byte_t Frequency,
2725 int PeriodicOnly, int altChanRingIndicator,
2731 CtlP->AltChanRingIndicator = altChanRingIndicator;
2732 CtlP->UPCIRingInd = UPCIRingInd;
2733 CtlP->CtlNum = CtlNum;
2734 CtlP->CtlID = CTLID_0001; /* controller release 1 */
2735 CtlP->BusType = isPCI; /* controller release 1 */
2739 CtlP->PCIIO = ConfigIO + _PCI_9030_INT_CTRL;
2740 CtlP->PCIIO2 = ConfigIO + _PCI_9030_GPIO_CTRL;
2741 CtlP->AiopIntrBits = upci_aiop_intr_bits;
2745 (WordIO_t) ((ByteIO_t) AiopIOList[0] + _PCI_INT_FUNC);
2746 CtlP->AiopIntrBits = aiop_intr_bits;
2749 sPCIControllerEOI(CtlP); /* clear EOI if warm init */
2752 for (i = 0; i < AiopIOListSize; i++) {
2754 CtlP->AiopIO[i] = (WordIO_t) io;
2755 CtlP->AiopIntChanIO[i] = io + _INT_CHAN;
2757 CtlP->AiopID[i] = sReadAiopID(io); /* read AIOP ID */
2758 if (CtlP->AiopID[i] == AIOPID_NULL) /* if AIOP does not exist */
2759 break; /* done looking for AIOPs */
2761 CtlP->AiopNumChan[i] = sReadAiopNumChan((WordIO_t) io); /* num channels in AIOP */
2762 sOutW((WordIO_t) io + _INDX_ADDR, _CLK_PRE); /* clock prescaler */
2763 sOutB(io + _INDX_DATA, sClockPrescale);
2764 CtlP->NumAiop++; /* bump count of AIOPs */
2767 if (CtlP->NumAiop == 0)
2770 return (CtlP->NumAiop);
2773 /***************************************************************************
2774 Function: sReadAiopID
2775 Purpose: Read the AIOP idenfication number directly from an AIOP.
2776 Call: sReadAiopID(io)
2777 ByteIO_t io: AIOP base I/O address
2778 Return: int: Flag AIOPID_XXXX if a valid AIOP is found, where X
2779 is replace by an identifying number.
2780 Flag AIOPID_NULL if no valid AIOP is found
2781 Warnings: No context switches are allowed while executing this function.
2784 static int sReadAiopID(ByteIO_t io)
2786 Byte_t AiopID; /* ID byte from AIOP */
2788 sOutB(io + _CMD_REG, RESET_ALL); /* reset AIOP */
2789 sOutB(io + _CMD_REG, 0x0);
2790 AiopID = sInW(io + _CHN_STAT0) & 0x07;
2793 else /* AIOP does not exist */
2797 /***************************************************************************
2798 Function: sReadAiopNumChan
2799 Purpose: Read the number of channels available in an AIOP directly from
2801 Call: sReadAiopNumChan(io)
2802 WordIO_t io: AIOP base I/O address
2803 Return: int: The number of channels available
2804 Comments: The number of channels is determined by write/reads from identical
2805 offsets within the SRAM address spaces for channels 0 and 4.
2806 If the channel 4 space is mirrored to channel 0 it is a 4 channel
2807 AIOP, otherwise it is an 8 channel.
2808 Warnings: No context switches are allowed while executing this function.
2810 static int sReadAiopNumChan(WordIO_t io)
2813 static Byte_t R[4] = { 0x00, 0x00, 0x34, 0x12 };
2815 /* write to chan 0 SRAM */
2816 out32((DWordIO_t) io + _INDX_ADDR, R);
2817 sOutW(io + _INDX_ADDR, 0); /* read from SRAM, chan 0 */
2818 x = sInW(io + _INDX_DATA);
2819 sOutW(io + _INDX_ADDR, 0x4000); /* read from SRAM, chan 4 */
2820 if (x != sInW(io + _INDX_DATA)) /* if different must be 8 chan */
2826 /***************************************************************************
2828 Purpose: Initialization of a channel and channel structure
2829 Call: sInitChan(CtlP,ChP,AiopNum,ChanNum)
2830 CONTROLLER_T *CtlP; Ptr to controller structure
2831 CHANNEL_T *ChP; Ptr to channel structure
2832 int AiopNum; AIOP number within controller
2833 int ChanNum; Channel number within AIOP
2834 Return: int: 1 if initialization succeeded, 0 if it fails because channel
2835 number exceeds number of channels available in AIOP.
2836 Comments: This function must be called before a channel can be used.
2837 Warnings: No range checking on any of the parameters is done.
2839 No context switches are allowed while executing this function.
2841 static int sInitChan(CONTROLLER_T * CtlP, CHANNEL_T * ChP, int AiopNum,
2852 if (ChanNum >= CtlP->AiopNumChan[AiopNum])
2853 return 0; /* exceeds num chans in AIOP */
2855 /* Channel, AIOP, and controller identifiers */
2857 ChP->ChanID = CtlP->AiopID[AiopNum];
2858 ChP->AiopNum = AiopNum;
2859 ChP->ChanNum = ChanNum;
2861 /* Global direct addresses */
2862 AiopIO = CtlP->AiopIO[AiopNum];
2863 ChP->Cmd = (ByteIO_t) AiopIO + _CMD_REG;
2864 ChP->IntChan = (ByteIO_t) AiopIO + _INT_CHAN;
2865 ChP->IntMask = (ByteIO_t) AiopIO + _INT_MASK;
2866 ChP->IndexAddr = (DWordIO_t) AiopIO + _INDX_ADDR;
2867 ChP->IndexData = AiopIO + _INDX_DATA;
2869 /* Channel direct addresses */
2870 ChIOOff = AiopIO + ChP->ChanNum * 2;
2871 ChP->TxRxData = ChIOOff + _TD0;
2872 ChP->ChanStat = ChIOOff + _CHN_STAT0;
2873 ChP->TxRxCount = ChIOOff + _FIFO_CNT0;
2874 ChP->IntID = (ByteIO_t) AiopIO + ChP->ChanNum + _INT_ID0;
2876 /* Initialize the channel from the RData array */
2877 for (i = 0; i < RDATASIZE; i += 4) {
2879 R[1] = RData[i + 1] + 0x10 * ChanNum;
2880 R[2] = RData[i + 2];
2881 R[3] = RData[i + 3];
2882 out32(ChP->IndexAddr, R);
2886 for (i = 0; i < RREGDATASIZE; i += 4) {
2887 ChR[i] = RRegData[i];
2888 ChR[i + 1] = RRegData[i + 1] + 0x10 * ChanNum;
2889 ChR[i + 2] = RRegData[i + 2];
2890 ChR[i + 3] = RRegData[i + 3];
2893 /* Indexed registers */
2894 ChOff = (Word_t) ChanNum *0x1000;
2896 if (sClockPrescale == 0x14)
2901 ChP->BaudDiv[0] = (Byte_t) (ChOff + _BAUD);
2902 ChP->BaudDiv[1] = (Byte_t) ((ChOff + _BAUD) >> 8);
2903 ChP->BaudDiv[2] = (Byte_t) brd9600;
2904 ChP->BaudDiv[3] = (Byte_t) (brd9600 >> 8);
2905 out32(ChP->IndexAddr, ChP->BaudDiv);
2907 ChP->TxControl[0] = (Byte_t) (ChOff + _TX_CTRL);
2908 ChP->TxControl[1] = (Byte_t) ((ChOff + _TX_CTRL) >> 8);
2909 ChP->TxControl[2] = 0;
2910 ChP->TxControl[3] = 0;
2911 out32(ChP->IndexAddr, ChP->TxControl);
2913 ChP->RxControl[0] = (Byte_t) (ChOff + _RX_CTRL);
2914 ChP->RxControl[1] = (Byte_t) ((ChOff + _RX_CTRL) >> 8);
2915 ChP->RxControl[2] = 0;
2916 ChP->RxControl[3] = 0;
2917 out32(ChP->IndexAddr, ChP->RxControl);
2919 ChP->TxEnables[0] = (Byte_t) (ChOff + _TX_ENBLS);
2920 ChP->TxEnables[1] = (Byte_t) ((ChOff + _TX_ENBLS) >> 8);
2921 ChP->TxEnables[2] = 0;
2922 ChP->TxEnables[3] = 0;
2923 out32(ChP->IndexAddr, ChP->TxEnables);
2925 ChP->TxCompare[0] = (Byte_t) (ChOff + _TXCMP1);
2926 ChP->TxCompare[1] = (Byte_t) ((ChOff + _TXCMP1) >> 8);
2927 ChP->TxCompare[2] = 0;
2928 ChP->TxCompare[3] = 0;
2929 out32(ChP->IndexAddr, ChP->TxCompare);
2931 ChP->TxReplace1[0] = (Byte_t) (ChOff + _TXREP1B1);
2932 ChP->TxReplace1[1] = (Byte_t) ((ChOff + _TXREP1B1) >> 8);
2933 ChP->TxReplace1[2] = 0;
2934 ChP->TxReplace1[3] = 0;
2935 out32(ChP->IndexAddr, ChP->TxReplace1);
2937 ChP->TxReplace2[0] = (Byte_t) (ChOff + _TXREP2);
2938 ChP->TxReplace2[1] = (Byte_t) ((ChOff + _TXREP2) >> 8);
2939 ChP->TxReplace2[2] = 0;
2940 ChP->TxReplace2[3] = 0;
2941 out32(ChP->IndexAddr, ChP->TxReplace2);
2943 ChP->TxFIFOPtrs = ChOff + _TXF_OUTP;
2944 ChP->TxFIFO = ChOff + _TX_FIFO;
2946 sOutB(ChP->Cmd, (Byte_t) ChanNum | RESTXFCNT); /* apply reset Tx FIFO count */
2947 sOutB(ChP->Cmd, (Byte_t) ChanNum); /* remove reset Tx FIFO count */
2948 sOutW((WordIO_t) ChP->IndexAddr, ChP->TxFIFOPtrs); /* clear Tx in/out ptrs */
2949 sOutW(ChP->IndexData, 0);
2950 ChP->RxFIFOPtrs = ChOff + _RXF_OUTP;
2951 ChP->RxFIFO = ChOff + _RX_FIFO;
2953 sOutB(ChP->Cmd, (Byte_t) ChanNum | RESRXFCNT); /* apply reset Rx FIFO count */
2954 sOutB(ChP->Cmd, (Byte_t) ChanNum); /* remove reset Rx FIFO count */
2955 sOutW((WordIO_t) ChP->IndexAddr, ChP->RxFIFOPtrs); /* clear Rx out ptr */
2956 sOutW(ChP->IndexData, 0);
2957 sOutW((WordIO_t) ChP->IndexAddr, ChP->RxFIFOPtrs + 2); /* clear Rx in ptr */
2958 sOutW(ChP->IndexData, 0);
2959 ChP->TxPrioCnt = ChOff + _TXP_CNT;
2960 sOutW((WordIO_t) ChP->IndexAddr, ChP->TxPrioCnt);
2961 sOutB(ChP->IndexData, 0);
2962 ChP->TxPrioPtr = ChOff + _TXP_PNTR;
2963 sOutW((WordIO_t) ChP->IndexAddr, ChP->TxPrioPtr);
2964 sOutB(ChP->IndexData, 0);
2965 ChP->TxPrioBuf = ChOff + _TXP_BUF;
2966 sEnRxProcessor(ChP); /* start the Rx processor */
2971 /***************************************************************************
2972 Function: sStopRxProcessor
2973 Purpose: Stop the receive processor from processing a channel.
2974 Call: sStopRxProcessor(ChP)
2975 CHANNEL_T *ChP; Ptr to channel structure
2977 Comments: The receive processor can be started again with sStartRxProcessor().
2978 This function causes the receive processor to skip over the
2979 stopped channel. It does not stop it from processing other channels.
2981 Warnings: No context switches are allowed while executing this function.
2983 Do not leave the receive processor stopped for more than one
2986 After calling this function a delay of 4 uS is required to ensure
2987 that the receive processor is no longer processing this channel.
2989 static void sStopRxProcessor(CHANNEL_T * ChP)
2997 out32(ChP->IndexAddr, R);
3000 /***************************************************************************
3001 Function: sFlushRxFIFO
3002 Purpose: Flush the Rx FIFO
3003 Call: sFlushRxFIFO(ChP)
3004 CHANNEL_T *ChP; Ptr to channel structure
3006 Comments: To prevent data from being enqueued or dequeued in the Tx FIFO
3007 while it is being flushed the receive processor is stopped
3008 and the transmitter is disabled. After these operations a
3009 4 uS delay is done before clearing the pointers to allow
3010 the receive processor to stop. These items are handled inside
3012 Warnings: No context switches are allowed while executing this function.
3014 static void sFlushRxFIFO(CHANNEL_T * ChP)
3017 Byte_t Ch; /* channel number within AIOP */
3018 int RxFIFOEnabled; /* 1 if Rx FIFO enabled */
3020 if (sGetRxCnt(ChP) == 0) /* Rx FIFO empty */
3021 return; /* don't need to flush */
3024 if (ChP->R[0x32] == 0x08) { /* Rx FIFO is enabled */
3026 sDisRxFIFO(ChP); /* disable it */
3027 for (i = 0; i < 2000 / 200; i++) /* delay 2 uS to allow proc to disable FIFO */
3028 sInB(ChP->IntChan); /* depends on bus i/o timing */
3030 sGetChanStatus(ChP); /* clear any pending Rx errors in chan stat */
3031 Ch = (Byte_t) sGetChanNum(ChP);
3032 sOutB(ChP->Cmd, Ch | RESRXFCNT); /* apply reset Rx FIFO count */
3033 sOutB(ChP->Cmd, Ch); /* remove reset Rx FIFO count */
3034 sOutW((WordIO_t) ChP->IndexAddr, ChP->RxFIFOPtrs); /* clear Rx out ptr */
3035 sOutW(ChP->IndexData, 0);
3036 sOutW((WordIO_t) ChP->IndexAddr, ChP->RxFIFOPtrs + 2); /* clear Rx in ptr */
3037 sOutW(ChP->IndexData, 0);
3039 sEnRxFIFO(ChP); /* enable Rx FIFO */
3042 /***************************************************************************
3043 Function: sFlushTxFIFO
3044 Purpose: Flush the Tx FIFO
3045 Call: sFlushTxFIFO(ChP)
3046 CHANNEL_T *ChP; Ptr to channel structure
3048 Comments: To prevent data from being enqueued or dequeued in the Tx FIFO
3049 while it is being flushed the receive processor is stopped
3050 and the transmitter is disabled. After these operations a
3051 4 uS delay is done before clearing the pointers to allow
3052 the receive processor to stop. These items are handled inside
3054 Warnings: No context switches are allowed while executing this function.
3056 static void sFlushTxFIFO(CHANNEL_T * ChP)
3059 Byte_t Ch; /* channel number within AIOP */
3060 int TxEnabled; /* 1 if transmitter enabled */
3062 if (sGetTxCnt(ChP) == 0) /* Tx FIFO empty */
3063 return; /* don't need to flush */
3066 if (ChP->TxControl[3] & TX_ENABLE) {
3068 sDisTransmit(ChP); /* disable transmitter */
3070 sStopRxProcessor(ChP); /* stop Rx processor */
3071 for (i = 0; i < 4000 / 200; i++) /* delay 4 uS to allow proc to stop */
3072 sInB(ChP->IntChan); /* depends on bus i/o timing */
3073 Ch = (Byte_t) sGetChanNum(ChP);
3074 sOutB(ChP->Cmd, Ch | RESTXFCNT); /* apply reset Tx FIFO count */
3075 sOutB(ChP->Cmd, Ch); /* remove reset Tx FIFO count */
3076 sOutW((WordIO_t) ChP->IndexAddr, ChP->TxFIFOPtrs); /* clear Tx in/out ptrs */
3077 sOutW(ChP->IndexData, 0);
3079 sEnTransmit(ChP); /* enable transmitter */
3080 sStartRxProcessor(ChP); /* restart Rx processor */
3083 /***************************************************************************
3084 Function: sWriteTxPrioByte
3085 Purpose: Write a byte of priority transmit data to a channel
3086 Call: sWriteTxPrioByte(ChP,Data)
3087 CHANNEL_T *ChP; Ptr to channel structure
3088 Byte_t Data; The transmit data byte
3090 Return: int: 1 if the bytes is successfully written, otherwise 0.
3092 Comments: The priority byte is transmitted before any data in the Tx FIFO.
3094 Warnings: No context switches are allowed while executing this function.
3096 static int sWriteTxPrioByte(CHANNEL_T * ChP, Byte_t Data)
3098 Byte_t DWBuf[4]; /* buffer for double word writes */
3099 Word_t *WordPtr; /* must be far because Win SS != DS */
3100 register DWordIO_t IndexAddr;
3102 if (sGetTxCnt(ChP) > 1) { /* write it to Tx priority buffer */
3103 IndexAddr = ChP->IndexAddr;
3104 sOutW((WordIO_t) IndexAddr, ChP->TxPrioCnt); /* get priority buffer status */
3105 if (sInB((ByteIO_t) ChP->IndexData) & PRI_PEND) /* priority buffer busy */
3106 return (0); /* nothing sent */
3108 WordPtr = (Word_t *) (&DWBuf[0]);
3109 *WordPtr = ChP->TxPrioBuf; /* data byte address */
3111 DWBuf[2] = Data; /* data byte value */
3112 out32(IndexAddr, DWBuf); /* write it out */
3114 *WordPtr = ChP->TxPrioCnt; /* Tx priority count address */
3116 DWBuf[2] = PRI_PEND + 1; /* indicate 1 byte pending */
3117 DWBuf[3] = 0; /* priority buffer pointer */
3118 out32(IndexAddr, DWBuf); /* write it out */
3119 } else { /* write it to Tx FIFO */
3121 sWriteTxByte(sGetTxRxDataIO(ChP), Data);
3123 return (1); /* 1 byte sent */
3126 /***************************************************************************
3127 Function: sEnInterrupts
3128 Purpose: Enable one or more interrupts for a channel
3129 Call: sEnInterrupts(ChP,Flags)
3130 CHANNEL_T *ChP; Ptr to channel structure
3131 Word_t Flags: Interrupt enable flags, can be any combination
3132 of the following flags:
3133 TXINT_EN: Interrupt on Tx FIFO empty
3134 RXINT_EN: Interrupt on Rx FIFO at trigger level (see
3136 SRCINT_EN: Interrupt on SRC (Special Rx Condition)
3137 MCINT_EN: Interrupt on modem input change
3138 CHANINT_EN: Allow channel interrupt signal to the AIOP's
3139 Interrupt Channel Register.
3141 Comments: If an interrupt enable flag is set in Flags, that interrupt will be
3142 enabled. If an interrupt enable flag is not set in Flags, that
3143 interrupt will not be changed. Interrupts can be disabled with
3144 function sDisInterrupts().
3146 This function sets the appropriate bit for the channel in the AIOP's
3147 Interrupt Mask Register if the CHANINT_EN flag is set. This allows
3148 this channel's bit to be set in the AIOP's Interrupt Channel Register.
3150 Interrupts must also be globally enabled before channel interrupts
3151 will be passed on to the host. This is done with function
3154 In some cases it may be desirable to disable interrupts globally but
3155 enable channel interrupts. This would allow the global interrupt
3156 status register to be used to determine which AIOPs need service.
3158 static void sEnInterrupts(CHANNEL_T * ChP, Word_t Flags)
3160 Byte_t Mask; /* Interrupt Mask Register */
3162 ChP->RxControl[2] |=
3163 ((Byte_t) Flags & (RXINT_EN | SRCINT_EN | MCINT_EN));
3165 out32(ChP->IndexAddr, ChP->RxControl);
3167 ChP->TxControl[2] |= ((Byte_t) Flags & TXINT_EN);
3169 out32(ChP->IndexAddr, ChP->TxControl);
3171 if (Flags & CHANINT_EN) {
3172 Mask = sInB(ChP->IntMask) | sBitMapSetTbl[ChP->ChanNum];
3173 sOutB(ChP->IntMask, Mask);
3177 /***************************************************************************
3178 Function: sDisInterrupts
3179 Purpose: Disable one or more interrupts for a channel
3180 Call: sDisInterrupts(ChP,Flags)
3181 CHANNEL_T *ChP; Ptr to channel structure
3182 Word_t Flags: Interrupt flags, can be any combination
3183 of the following flags:
3184 TXINT_EN: Interrupt on Tx FIFO empty
3185 RXINT_EN: Interrupt on Rx FIFO at trigger level (see
3187 SRCINT_EN: Interrupt on SRC (Special Rx Condition)
3188 MCINT_EN: Interrupt on modem input change
3189 CHANINT_EN: Disable channel interrupt signal to the
3190 AIOP's Interrupt Channel Register.
3192 Comments: If an interrupt flag is set in Flags, that interrupt will be
3193 disabled. If an interrupt flag is not set in Flags, that
3194 interrupt will not be changed. Interrupts can be enabled with
3195 function sEnInterrupts().
3197 This function clears the appropriate bit for the channel in the AIOP's
3198 Interrupt Mask Register if the CHANINT_EN flag is set. This blocks
3199 this channel's bit from being set in the AIOP's Interrupt Channel
3202 static void sDisInterrupts(CHANNEL_T * ChP, Word_t Flags)
3204 Byte_t Mask; /* Interrupt Mask Register */
3206 ChP->RxControl[2] &=
3207 ~((Byte_t) Flags & (RXINT_EN | SRCINT_EN | MCINT_EN));
3208 out32(ChP->IndexAddr, ChP->RxControl);
3209 ChP->TxControl[2] &= ~((Byte_t) Flags & TXINT_EN);
3210 out32(ChP->IndexAddr, ChP->TxControl);
3212 if (Flags & CHANINT_EN) {
3213 Mask = sInB(ChP->IntMask) & sBitMapClrTbl[ChP->ChanNum];
3214 sOutB(ChP->IntMask, Mask);
3218 static void sSetInterfaceMode(CHANNEL_T * ChP, Byte_t mode)
3220 sOutB(ChP->CtlP->AiopIO[2], (mode & 0x18) | ChP->ChanNum);
3224 * Not an official SSCI function, but how to reset RocketModems.
3227 static void sModemReset(CONTROLLER_T * CtlP, int chan, int on)
3232 addr = CtlP->AiopIO[0] + 0x400;
3233 val = sInB(CtlP->MReg3IO);
3234 /* if AIOP[1] is not enabled, enable it */
3235 if ((val & 2) == 0) {
3236 val = sInB(CtlP->MReg2IO);
3237 sOutB(CtlP->MReg2IO, (val & 0xfc) | (1 & 0x03));
3238 sOutB(CtlP->MBaseIO, (unsigned char) (addr >> 6));
3244 sOutB(addr + chan, 0); /* apply or remove reset */
3249 * Not an official SSCI function, but how to reset RocketModems.
3252 static void sPCIModemReset(CONTROLLER_T * CtlP, int chan, int on)
3256 addr = CtlP->AiopIO[0] + 0x40; /* 2nd AIOP */
3259 sOutB(addr + chan, 0); /* apply or remove reset */
3262 /* Resets the speaker controller on RocketModem II and III devices */
3263 static void rmSpeakerReset(CONTROLLER_T * CtlP, unsigned long model)
3267 /* RocketModem II speaker control is at the 8th port location of offset 0x40 */
3268 if ((model == MODEL_RP4M) || (model == MODEL_RP6M)) {
3269 addr = CtlP->AiopIO[0] + 0x4F;
3273 /* RocketModem III speaker control is at the 1st port location of offset 0x80 */
3274 if ((model == MODEL_UPCI_RM3_8PORT)
3275 || (model == MODEL_UPCI_RM3_4PORT)) {
3276 addr = CtlP->AiopIO[0] + 0x88;
3281 /* Returns the line number given the controller (board), aiop and channel number */
3282 static unsigned char GetLineNumber(int ctrl, int aiop, int ch)
3284 return lineNumbers[(ctrl << 5) | (aiop << 3) | ch];
3288 * Stores the line number associated with a given controller (board), aiop
3289 * and channel number.
3290 * Returns: The line number assigned
3292 static unsigned char SetLineNumber(int ctrl, int aiop, int ch)
3294 lineNumbers[(ctrl << 5) | (aiop << 3) | ch] = nextLineNumber++;
3295 return (nextLineNumber - 1);