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 int 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);
1257 * sGetChanRI used to be a macro in rocket_int.h. When the functionality for
1258 * the UPCI boards was added, it was decided to make this a function because
1259 * the macro was getting too complicated. All cases except the first one
1260 * (UPCIRingInd) are taken directly from the original macro.
1262 static int sGetChanRI(CHANNEL_T * ChP)
1264 CONTROLLER_t *CtlP = ChP->CtlP;
1265 int ChanNum = ChP->ChanNum;
1268 if (CtlP->UPCIRingInd)
1269 RingInd = !(sInB(CtlP->UPCIRingInd) & sBitMapSetTbl[ChanNum]);
1270 else if (CtlP->AltChanRingIndicator)
1271 RingInd = sInB((ByteIO_t) (ChP->ChanStat + 8)) & DSR_ACT;
1272 else if (CtlP->boardType == ROCKET_TYPE_PC104)
1273 RingInd = !(sInB(CtlP->AiopIO[3]) & sBitMapSetTbl[ChanNum]);
1278 /********************************************************************************************/
1279 /* Here are the routines used by rp_ioctl. These are all called from exception handlers. */
1282 * Returns the state of the serial modem control lines. These next 2 functions
1283 * are the way kernel versions > 2.5 handle modem control lines rather than IOCTLs.
1285 static int rp_tiocmget(struct tty_struct *tty, struct file *file)
1287 struct r_port *info = (struct r_port *)tty->driver_data;
1288 unsigned int control, result, ChanStatus;
1290 ChanStatus = sGetChanStatusLo(&info->channel);
1291 control = info->channel.TxControl[3];
1292 result = ((control & SET_RTS) ? TIOCM_RTS : 0) |
1293 ((control & SET_DTR) ? TIOCM_DTR : 0) |
1294 ((ChanStatus & CD_ACT) ? TIOCM_CAR : 0) |
1295 (sGetChanRI(&info->channel) ? TIOCM_RNG : 0) |
1296 ((ChanStatus & DSR_ACT) ? TIOCM_DSR : 0) |
1297 ((ChanStatus & CTS_ACT) ? TIOCM_CTS : 0);
1303 * Sets the modem control lines
1305 static int rp_tiocmset(struct tty_struct *tty, struct file *file,
1306 unsigned int set, unsigned int clear)
1308 struct r_port *info = (struct r_port *)tty->driver_data;
1310 if (set & TIOCM_RTS)
1311 info->channel.TxControl[3] |= SET_RTS;
1312 if (set & TIOCM_DTR)
1313 info->channel.TxControl[3] |= SET_DTR;
1314 if (clear & TIOCM_RTS)
1315 info->channel.TxControl[3] &= ~SET_RTS;
1316 if (clear & TIOCM_DTR)
1317 info->channel.TxControl[3] &= ~SET_DTR;
1319 out32(info->channel.IndexAddr, info->channel.TxControl);
1323 static int get_config(struct r_port *info, struct rocket_config __user *retinfo)
1325 struct rocket_config tmp;
1329 memset(&tmp, 0, sizeof (tmp));
1330 tmp.line = info->line;
1331 tmp.flags = info->flags;
1332 tmp.close_delay = info->port.close_delay;
1333 tmp.closing_wait = info->port.closing_wait;
1334 tmp.port = rcktpt_io_addr[(info->line >> 5) & 3];
1336 if (copy_to_user(retinfo, &tmp, sizeof (*retinfo)))
1341 static int set_config(struct r_port *info, struct rocket_config __user *new_info)
1343 struct rocket_config new_serial;
1345 if (copy_from_user(&new_serial, new_info, sizeof (new_serial)))
1348 if (!capable(CAP_SYS_ADMIN))
1350 if ((new_serial.flags & ~ROCKET_USR_MASK) != (info->flags & ~ROCKET_USR_MASK))
1352 info->flags = ((info->flags & ~ROCKET_USR_MASK) | (new_serial.flags & ROCKET_USR_MASK));
1353 configure_r_port(info, NULL);
1357 info->flags = ((info->flags & ~ROCKET_FLAGS) | (new_serial.flags & ROCKET_FLAGS));
1358 info->port.close_delay = new_serial.close_delay;
1359 info->port.closing_wait = new_serial.closing_wait;
1361 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_HI)
1362 info->port.tty->alt_speed = 57600;
1363 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_VHI)
1364 info->port.tty->alt_speed = 115200;
1365 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_SHI)
1366 info->port.tty->alt_speed = 230400;
1367 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_WARP)
1368 info->port.tty->alt_speed = 460800;
1370 configure_r_port(info, NULL);
1375 * This function fills in a rocket_ports struct with information
1376 * about what boards/ports are in the system. This info is passed
1377 * to user space. See setrocket.c where the info is used to create
1378 * the /dev/ttyRx ports.
1380 static int get_ports(struct r_port *info, struct rocket_ports __user *retports)
1382 struct rocket_ports tmp;
1387 memset(&tmp, 0, sizeof (tmp));
1388 tmp.tty_major = rocket_driver->major;
1390 for (board = 0; board < 4; board++) {
1391 tmp.rocketModel[board].model = rocketModel[board].model;
1392 strcpy(tmp.rocketModel[board].modelString, rocketModel[board].modelString);
1393 tmp.rocketModel[board].numPorts = rocketModel[board].numPorts;
1394 tmp.rocketModel[board].loadrm2 = rocketModel[board].loadrm2;
1395 tmp.rocketModel[board].startingPortNumber = rocketModel[board].startingPortNumber;
1397 if (copy_to_user(retports, &tmp, sizeof (*retports)))
1402 static int reset_rm2(struct r_port *info, void __user *arg)
1406 if (!capable(CAP_SYS_ADMIN))
1409 if (copy_from_user(&reset, arg, sizeof (int)))
1414 if (rcktpt_type[info->board] != ROCKET_TYPE_MODEMII &&
1415 rcktpt_type[info->board] != ROCKET_TYPE_MODEMIII)
1418 if (info->ctlp->BusType == isISA)
1419 sModemReset(info->ctlp, info->chan, reset);
1421 sPCIModemReset(info->ctlp, info->chan, reset);
1426 static int get_version(struct r_port *info, struct rocket_version __user *retvers)
1428 if (copy_to_user(retvers, &driver_version, sizeof (*retvers)))
1433 /* IOCTL call handler into the driver */
1434 static int rp_ioctl(struct tty_struct *tty, struct file *file,
1435 unsigned int cmd, unsigned long arg)
1437 struct r_port *info = (struct r_port *) tty->driver_data;
1438 void __user *argp = (void __user *)arg;
1441 if (cmd != RCKP_GET_PORTS && rocket_paranoia_check(info, "rp_ioctl"))
1447 case RCKP_GET_STRUCT:
1448 if (copy_to_user(argp, info, sizeof (struct r_port)))
1451 case RCKP_GET_CONFIG:
1452 ret = get_config(info, argp);
1454 case RCKP_SET_CONFIG:
1455 ret = set_config(info, argp);
1457 case RCKP_GET_PORTS:
1458 ret = get_ports(info, argp);
1460 case RCKP_RESET_RM2:
1461 ret = reset_rm2(info, argp);
1463 case RCKP_GET_VERSION:
1464 ret = get_version(info, argp);
1473 static void rp_send_xchar(struct tty_struct *tty, char ch)
1475 struct r_port *info = (struct r_port *) tty->driver_data;
1478 if (rocket_paranoia_check(info, "rp_send_xchar"))
1481 cp = &info->channel;
1483 sWriteTxPrioByte(cp, ch);
1485 sWriteTxByte(sGetTxRxDataIO(cp), ch);
1488 static void rp_throttle(struct tty_struct *tty)
1490 struct r_port *info = (struct r_port *) tty->driver_data;
1493 #ifdef ROCKET_DEBUG_THROTTLE
1494 printk(KERN_INFO "throttle %s: %d....\n", tty->name,
1495 tty->ldisc.chars_in_buffer(tty));
1498 if (rocket_paranoia_check(info, "rp_throttle"))
1501 cp = &info->channel;
1503 rp_send_xchar(tty, STOP_CHAR(tty));
1505 sClrRTS(&info->channel);
1508 static void rp_unthrottle(struct tty_struct *tty)
1510 struct r_port *info = (struct r_port *) tty->driver_data;
1512 #ifdef ROCKET_DEBUG_THROTTLE
1513 printk(KERN_INFO "unthrottle %s: %d....\n", tty->name,
1514 tty->ldisc.chars_in_buffer(tty));
1517 if (rocket_paranoia_check(info, "rp_throttle"))
1520 cp = &info->channel;
1522 rp_send_xchar(tty, START_CHAR(tty));
1524 sSetRTS(&info->channel);
1528 * ------------------------------------------------------------
1529 * rp_stop() and rp_start()
1531 * This routines are called before setting or resetting tty->stopped.
1532 * They enable or disable transmitter interrupts, as necessary.
1533 * ------------------------------------------------------------
1535 static void rp_stop(struct tty_struct *tty)
1537 struct r_port *info = (struct r_port *) tty->driver_data;
1539 #ifdef ROCKET_DEBUG_FLOW
1540 printk(KERN_INFO "stop %s: %d %d....\n", tty->name,
1541 info->xmit_cnt, info->xmit_fifo_room);
1544 if (rocket_paranoia_check(info, "rp_stop"))
1547 if (sGetTxCnt(&info->channel))
1548 sDisTransmit(&info->channel);
1551 static void rp_start(struct tty_struct *tty)
1553 struct r_port *info = (struct r_port *) tty->driver_data;
1555 #ifdef ROCKET_DEBUG_FLOW
1556 printk(KERN_INFO "start %s: %d %d....\n", tty->name,
1557 info->xmit_cnt, info->xmit_fifo_room);
1560 if (rocket_paranoia_check(info, "rp_stop"))
1563 sEnTransmit(&info->channel);
1564 set_bit((info->aiop * 8) + info->chan,
1565 (void *) &xmit_flags[info->board]);
1569 * rp_wait_until_sent() --- wait until the transmitter is empty
1571 static void rp_wait_until_sent(struct tty_struct *tty, int timeout)
1573 struct r_port *info = (struct r_port *) tty->driver_data;
1575 unsigned long orig_jiffies;
1576 int check_time, exit_time;
1579 if (rocket_paranoia_check(info, "rp_wait_until_sent"))
1582 cp = &info->channel;
1584 orig_jiffies = jiffies;
1585 #ifdef ROCKET_DEBUG_WAIT_UNTIL_SENT
1586 printk(KERN_INFO "In RP_wait_until_sent(%d) (jiff=%lu)...\n", timeout,
1588 printk(KERN_INFO "cps=%d...\n", info->cps);
1592 txcnt = sGetTxCnt(cp);
1594 if (sGetChanStatusLo(cp) & TXSHRMT)
1596 check_time = (HZ / info->cps) / 5;
1598 check_time = HZ * txcnt / info->cps;
1601 exit_time = orig_jiffies + timeout - jiffies;
1604 if (exit_time < check_time)
1605 check_time = exit_time;
1607 if (check_time == 0)
1609 #ifdef ROCKET_DEBUG_WAIT_UNTIL_SENT
1610 printk(KERN_INFO "txcnt = %d (jiff=%lu,check=%d)...\n", txcnt,
1611 jiffies, check_time);
1613 msleep_interruptible(jiffies_to_msecs(check_time));
1614 if (signal_pending(current))
1617 __set_current_state(TASK_RUNNING);
1619 #ifdef ROCKET_DEBUG_WAIT_UNTIL_SENT
1620 printk(KERN_INFO "txcnt = %d (jiff=%lu)...done\n", txcnt, jiffies);
1625 * rp_hangup() --- called by tty_hangup() when a hangup is signaled.
1627 static void rp_hangup(struct tty_struct *tty)
1630 struct r_port *info = (struct r_port *) tty->driver_data;
1632 if (rocket_paranoia_check(info, "rp_hangup"))
1635 #if (defined(ROCKET_DEBUG_OPEN) || defined(ROCKET_DEBUG_HANGUP))
1636 printk(KERN_INFO "rp_hangup of ttyR%d...\n", info->line);
1638 rp_flush_buffer(tty);
1639 if (info->flags & ROCKET_CLOSING)
1641 if (info->port.count)
1642 atomic_dec(&rp_num_ports_open);
1643 clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
1645 info->port.count = 0;
1646 info->flags &= ~ROCKET_NORMAL_ACTIVE;
1647 info->port.tty = NULL;
1649 cp = &info->channel;
1652 sDisInterrupts(cp, (TXINT_EN | MCINT_EN | RXINT_EN | SRCINT_EN | CHANINT_EN));
1654 sDisTxSoftFlowCtl(cp);
1656 info->flags &= ~ROCKET_INITIALIZED;
1658 wake_up_interruptible(&info->port.open_wait);
1662 * Exception handler - write char routine. The RocketPort driver uses a
1663 * double-buffering strategy, with the twist that if the in-memory CPU
1664 * buffer is empty, and there's space in the transmit FIFO, the
1665 * writing routines will write directly to transmit FIFO.
1666 * Write buffer and counters protected by spinlocks
1668 static int rp_put_char(struct tty_struct *tty, unsigned char ch)
1670 struct r_port *info = (struct r_port *) tty->driver_data;
1672 unsigned long flags;
1674 if (rocket_paranoia_check(info, "rp_put_char"))
1678 * Grab the port write mutex, locking out other processes that try to
1679 * write to this port
1681 mutex_lock(&info->write_mtx);
1683 #ifdef ROCKET_DEBUG_WRITE
1684 printk(KERN_INFO "rp_put_char %c...\n", ch);
1687 spin_lock_irqsave(&info->slock, flags);
1688 cp = &info->channel;
1690 if (!tty->stopped && !tty->hw_stopped && info->xmit_fifo_room == 0)
1691 info->xmit_fifo_room = TXFIFO_SIZE - sGetTxCnt(cp);
1693 if (tty->stopped || tty->hw_stopped || info->xmit_fifo_room == 0 || info->xmit_cnt != 0) {
1694 info->xmit_buf[info->xmit_head++] = ch;
1695 info->xmit_head &= XMIT_BUF_SIZE - 1;
1697 set_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
1699 sOutB(sGetTxRxDataIO(cp), ch);
1700 info->xmit_fifo_room--;
1702 spin_unlock_irqrestore(&info->slock, flags);
1703 mutex_unlock(&info->write_mtx);
1708 * Exception handler - write routine, called when user app writes to the device.
1709 * A per port write mutex is used to protect from another process writing to
1710 * this port at the same time. This other process could be running on the other CPU
1711 * or get control of the CPU if the copy_from_user() blocks due to a page fault (swapped out).
1712 * Spinlocks protect the info xmit members.
1714 static int rp_write(struct tty_struct *tty,
1715 const unsigned char *buf, int count)
1717 struct r_port *info = (struct r_port *) tty->driver_data;
1719 const unsigned char *b;
1721 unsigned long flags;
1723 if (count <= 0 || rocket_paranoia_check(info, "rp_write"))
1726 if (mutex_lock_interruptible(&info->write_mtx))
1727 return -ERESTARTSYS;
1729 #ifdef ROCKET_DEBUG_WRITE
1730 printk(KERN_INFO "rp_write %d chars...\n", count);
1732 cp = &info->channel;
1734 if (!tty->stopped && !tty->hw_stopped && info->xmit_fifo_room < count)
1735 info->xmit_fifo_room = TXFIFO_SIZE - sGetTxCnt(cp);
1738 * If the write queue for the port is empty, and there is FIFO space, stuff bytes
1739 * into FIFO. Use the write queue for temp storage.
1741 if (!tty->stopped && !tty->hw_stopped && info->xmit_cnt == 0 && info->xmit_fifo_room > 0) {
1742 c = min(count, info->xmit_fifo_room);
1745 /* Push data into FIFO, 2 bytes at a time */
1746 sOutStrW(sGetTxRxDataIO(cp), (unsigned short *) b, c / 2);
1748 /* If there is a byte remaining, write it */
1750 sOutB(sGetTxRxDataIO(cp), b[c - 1]);
1756 spin_lock_irqsave(&info->slock, flags);
1757 info->xmit_fifo_room -= c;
1758 spin_unlock_irqrestore(&info->slock, flags);
1761 /* If count is zero, we wrote it all and are done */
1765 /* Write remaining data into the port's xmit_buf */
1767 if (!info->port.tty) /* Seemingly obligatory check... */
1769 c = min(count, XMIT_BUF_SIZE - info->xmit_cnt - 1);
1770 c = min(c, XMIT_BUF_SIZE - info->xmit_head);
1775 memcpy(info->xmit_buf + info->xmit_head, b, c);
1777 spin_lock_irqsave(&info->slock, flags);
1779 (info->xmit_head + c) & (XMIT_BUF_SIZE - 1);
1780 info->xmit_cnt += c;
1781 spin_unlock_irqrestore(&info->slock, flags);
1788 if ((retval > 0) && !tty->stopped && !tty->hw_stopped)
1789 set_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
1792 if (info->xmit_cnt < WAKEUP_CHARS) {
1794 #ifdef ROCKETPORT_HAVE_POLL_WAIT
1795 wake_up_interruptible(&tty->poll_wait);
1798 mutex_unlock(&info->write_mtx);
1803 * Return the number of characters that can be sent. We estimate
1804 * only using the in-memory transmit buffer only, and ignore the
1805 * potential space in the transmit FIFO.
1807 static int rp_write_room(struct tty_struct *tty)
1809 struct r_port *info = (struct r_port *) tty->driver_data;
1812 if (rocket_paranoia_check(info, "rp_write_room"))
1815 ret = XMIT_BUF_SIZE - info->xmit_cnt - 1;
1818 #ifdef ROCKET_DEBUG_WRITE
1819 printk(KERN_INFO "rp_write_room returns %d...\n", ret);
1825 * Return the number of characters in the buffer. Again, this only
1826 * counts those characters in the in-memory transmit buffer.
1828 static int rp_chars_in_buffer(struct tty_struct *tty)
1830 struct r_port *info = (struct r_port *) tty->driver_data;
1833 if (rocket_paranoia_check(info, "rp_chars_in_buffer"))
1836 cp = &info->channel;
1838 #ifdef ROCKET_DEBUG_WRITE
1839 printk(KERN_INFO "rp_chars_in_buffer returns %d...\n", info->xmit_cnt);
1841 return info->xmit_cnt;
1845 * Flushes the TX fifo for a port, deletes data in the xmit_buf stored in the
1846 * r_port struct for the port. Note that spinlock are used to protect info members,
1847 * do not call this function if the spinlock is already held.
1849 static void rp_flush_buffer(struct tty_struct *tty)
1851 struct r_port *info = (struct r_port *) tty->driver_data;
1853 unsigned long flags;
1855 if (rocket_paranoia_check(info, "rp_flush_buffer"))
1858 spin_lock_irqsave(&info->slock, flags);
1859 info->xmit_cnt = info->xmit_head = info->xmit_tail = 0;
1860 spin_unlock_irqrestore(&info->slock, flags);
1862 #ifdef ROCKETPORT_HAVE_POLL_WAIT
1863 wake_up_interruptible(&tty->poll_wait);
1867 cp = &info->channel;
1873 static struct pci_device_id __devinitdata rocket_pci_ids[] = {
1874 { PCI_DEVICE(PCI_VENDOR_ID_RP, PCI_ANY_ID) },
1877 MODULE_DEVICE_TABLE(pci, rocket_pci_ids);
1880 * Called when a PCI card is found. Retrieves and stores model information,
1881 * init's aiopic and serial port hardware.
1882 * Inputs: i is the board number (0-n)
1884 static __init int register_PCI(int i, struct pci_dev *dev)
1886 int num_aiops, aiop, max_num_aiops, num_chan, chan;
1887 unsigned int aiopio[MAX_AIOPS_PER_BOARD];
1888 char *str, *board_type;
1892 int altChanRingIndicator = 0;
1893 int ports_per_aiop = 8;
1894 WordIO_t ConfigIO = 0;
1895 ByteIO_t UPCIRingInd = 0;
1897 if (!dev || pci_enable_device(dev))
1900 rcktpt_io_addr[i] = pci_resource_start(dev, 0);
1902 rcktpt_type[i] = ROCKET_TYPE_NORMAL;
1903 rocketModel[i].loadrm2 = 0;
1904 rocketModel[i].startingPortNumber = nextLineNumber;
1906 /* Depending on the model, set up some config variables */
1907 switch (dev->device) {
1908 case PCI_DEVICE_ID_RP4QUAD:
1912 rocketModel[i].model = MODEL_RP4QUAD;
1913 strcpy(rocketModel[i].modelString, "RocketPort 4 port w/quad cable");
1914 rocketModel[i].numPorts = 4;
1916 case PCI_DEVICE_ID_RP8OCTA:
1919 rocketModel[i].model = MODEL_RP8OCTA;
1920 strcpy(rocketModel[i].modelString, "RocketPort 8 port w/octa cable");
1921 rocketModel[i].numPorts = 8;
1923 case PCI_DEVICE_ID_URP8OCTA:
1926 rocketModel[i].model = MODEL_UPCI_RP8OCTA;
1927 strcpy(rocketModel[i].modelString, "RocketPort UPCI 8 port w/octa cable");
1928 rocketModel[i].numPorts = 8;
1930 case PCI_DEVICE_ID_RP8INTF:
1933 rocketModel[i].model = MODEL_RP8INTF;
1934 strcpy(rocketModel[i].modelString, "RocketPort 8 port w/external I/F");
1935 rocketModel[i].numPorts = 8;
1937 case PCI_DEVICE_ID_URP8INTF:
1940 rocketModel[i].model = MODEL_UPCI_RP8INTF;
1941 strcpy(rocketModel[i].modelString, "RocketPort UPCI 8 port w/external I/F");
1942 rocketModel[i].numPorts = 8;
1944 case PCI_DEVICE_ID_RP8J:
1947 rocketModel[i].model = MODEL_RP8J;
1948 strcpy(rocketModel[i].modelString, "RocketPort 8 port w/RJ11 connectors");
1949 rocketModel[i].numPorts = 8;
1951 case PCI_DEVICE_ID_RP4J:
1955 rocketModel[i].model = MODEL_RP4J;
1956 strcpy(rocketModel[i].modelString, "RocketPort 4 port w/RJ45 connectors");
1957 rocketModel[i].numPorts = 4;
1959 case PCI_DEVICE_ID_RP8SNI:
1960 str = "8 (DB78 Custom)";
1962 rocketModel[i].model = MODEL_RP8SNI;
1963 strcpy(rocketModel[i].modelString, "RocketPort 8 port w/ custom DB78");
1964 rocketModel[i].numPorts = 8;
1966 case PCI_DEVICE_ID_RP16SNI:
1967 str = "16 (DB78 Custom)";
1969 rocketModel[i].model = MODEL_RP16SNI;
1970 strcpy(rocketModel[i].modelString, "RocketPort 16 port w/ custom DB78");
1971 rocketModel[i].numPorts = 16;
1973 case PCI_DEVICE_ID_RP16INTF:
1976 rocketModel[i].model = MODEL_RP16INTF;
1977 strcpy(rocketModel[i].modelString, "RocketPort 16 port w/external I/F");
1978 rocketModel[i].numPorts = 16;
1980 case PCI_DEVICE_ID_URP16INTF:
1983 rocketModel[i].model = MODEL_UPCI_RP16INTF;
1984 strcpy(rocketModel[i].modelString, "RocketPort UPCI 16 port w/external I/F");
1985 rocketModel[i].numPorts = 16;
1987 case PCI_DEVICE_ID_CRP16INTF:
1990 rocketModel[i].model = MODEL_CPCI_RP16INTF;
1991 strcpy(rocketModel[i].modelString, "RocketPort Compact PCI 16 port w/external I/F");
1992 rocketModel[i].numPorts = 16;
1994 case PCI_DEVICE_ID_RP32INTF:
1997 rocketModel[i].model = MODEL_RP32INTF;
1998 strcpy(rocketModel[i].modelString, "RocketPort 32 port w/external I/F");
1999 rocketModel[i].numPorts = 32;
2001 case PCI_DEVICE_ID_URP32INTF:
2004 rocketModel[i].model = MODEL_UPCI_RP32INTF;
2005 strcpy(rocketModel[i].modelString, "RocketPort UPCI 32 port w/external I/F");
2006 rocketModel[i].numPorts = 32;
2008 case PCI_DEVICE_ID_RPP4:
2009 str = "Plus Quadcable";
2012 altChanRingIndicator++;
2014 rocketModel[i].model = MODEL_RPP4;
2015 strcpy(rocketModel[i].modelString, "RocketPort Plus 4 port");
2016 rocketModel[i].numPorts = 4;
2018 case PCI_DEVICE_ID_RPP8:
2019 str = "Plus Octacable";
2022 altChanRingIndicator++;
2024 rocketModel[i].model = MODEL_RPP8;
2025 strcpy(rocketModel[i].modelString, "RocketPort Plus 8 port");
2026 rocketModel[i].numPorts = 8;
2028 case PCI_DEVICE_ID_RP2_232:
2029 str = "Plus 2 (RS-232)";
2032 altChanRingIndicator++;
2034 rocketModel[i].model = MODEL_RP2_232;
2035 strcpy(rocketModel[i].modelString, "RocketPort Plus 2 port RS232");
2036 rocketModel[i].numPorts = 2;
2038 case PCI_DEVICE_ID_RP2_422:
2039 str = "Plus 2 (RS-422)";
2042 altChanRingIndicator++;
2044 rocketModel[i].model = MODEL_RP2_422;
2045 strcpy(rocketModel[i].modelString, "RocketPort Plus 2 port RS422");
2046 rocketModel[i].numPorts = 2;
2048 case PCI_DEVICE_ID_RP6M:
2054 /* If revision is 1, the rocketmodem flash must be loaded.
2055 * If it is 2 it is a "socketed" version. */
2056 if (dev->revision == 1) {
2057 rcktpt_type[i] = ROCKET_TYPE_MODEMII;
2058 rocketModel[i].loadrm2 = 1;
2060 rcktpt_type[i] = ROCKET_TYPE_MODEM;
2063 rocketModel[i].model = MODEL_RP6M;
2064 strcpy(rocketModel[i].modelString, "RocketModem 6 port");
2065 rocketModel[i].numPorts = 6;
2067 case PCI_DEVICE_ID_RP4M:
2071 if (dev->revision == 1) {
2072 rcktpt_type[i] = ROCKET_TYPE_MODEMII;
2073 rocketModel[i].loadrm2 = 1;
2075 rcktpt_type[i] = ROCKET_TYPE_MODEM;
2078 rocketModel[i].model = MODEL_RP4M;
2079 strcpy(rocketModel[i].modelString, "RocketModem 4 port");
2080 rocketModel[i].numPorts = 4;
2083 str = "(unknown/unsupported)";
2089 * Check for UPCI boards.
2092 switch (dev->device) {
2093 case PCI_DEVICE_ID_URP32INTF:
2094 case PCI_DEVICE_ID_URP8INTF:
2095 case PCI_DEVICE_ID_URP16INTF:
2096 case PCI_DEVICE_ID_CRP16INTF:
2097 case PCI_DEVICE_ID_URP8OCTA:
2098 rcktpt_io_addr[i] = pci_resource_start(dev, 2);
2099 ConfigIO = pci_resource_start(dev, 1);
2100 if (dev->device == PCI_DEVICE_ID_URP8OCTA) {
2101 UPCIRingInd = rcktpt_io_addr[i] + _PCI_9030_RING_IND;
2104 * Check for octa or quad cable.
2107 (sInW(ConfigIO + _PCI_9030_GPIO_CTRL) &
2108 PCI_GPIO_CTRL_8PORT)) {
2111 rocketModel[i].numPorts = 4;
2115 case PCI_DEVICE_ID_UPCI_RM3_8PORT:
2118 rocketModel[i].model = MODEL_UPCI_RM3_8PORT;
2119 strcpy(rocketModel[i].modelString, "RocketModem III 8 port");
2120 rocketModel[i].numPorts = 8;
2121 rcktpt_io_addr[i] = pci_resource_start(dev, 2);
2122 UPCIRingInd = rcktpt_io_addr[i] + _PCI_9030_RING_IND;
2123 ConfigIO = pci_resource_start(dev, 1);
2124 rcktpt_type[i] = ROCKET_TYPE_MODEMIII;
2126 case PCI_DEVICE_ID_UPCI_RM3_4PORT:
2129 rocketModel[i].model = MODEL_UPCI_RM3_4PORT;
2130 strcpy(rocketModel[i].modelString, "RocketModem III 4 port");
2131 rocketModel[i].numPorts = 4;
2132 rcktpt_io_addr[i] = pci_resource_start(dev, 2);
2133 UPCIRingInd = rcktpt_io_addr[i] + _PCI_9030_RING_IND;
2134 ConfigIO = pci_resource_start(dev, 1);
2135 rcktpt_type[i] = ROCKET_TYPE_MODEMIII;
2141 switch (rcktpt_type[i]) {
2142 case ROCKET_TYPE_MODEM:
2143 board_type = "RocketModem";
2145 case ROCKET_TYPE_MODEMII:
2146 board_type = "RocketModem II";
2148 case ROCKET_TYPE_MODEMIII:
2149 board_type = "RocketModem III";
2152 board_type = "RocketPort";
2157 sClockPrescale = 0x12; /* mod 2 (divide by 3) */
2158 rp_baud_base[i] = 921600;
2161 * If support_low_speed is set, use the slow clock
2162 * prescale, which supports 50 bps
2164 if (support_low_speed) {
2165 /* mod 9 (divide by 10) prescale */
2166 sClockPrescale = 0x19;
2167 rp_baud_base[i] = 230400;
2169 /* mod 4 (devide by 5) prescale */
2170 sClockPrescale = 0x14;
2171 rp_baud_base[i] = 460800;
2175 for (aiop = 0; aiop < max_num_aiops; aiop++)
2176 aiopio[aiop] = rcktpt_io_addr[i] + (aiop * 0x40);
2177 ctlp = sCtlNumToCtlPtr(i);
2178 num_aiops = sPCIInitController(ctlp, i, aiopio, max_num_aiops, ConfigIO, 0, FREQ_DIS, 0, altChanRingIndicator, UPCIRingInd);
2179 for (aiop = 0; aiop < max_num_aiops; aiop++)
2180 ctlp->AiopNumChan[aiop] = ports_per_aiop;
2182 dev_info(&dev->dev, "comtrol PCI controller #%d found at "
2183 "address %04lx, %d AIOP(s) (%s), creating ttyR%d - %ld\n",
2184 i, rcktpt_io_addr[i], num_aiops, rocketModel[i].modelString,
2185 rocketModel[i].startingPortNumber,
2186 rocketModel[i].startingPortNumber + rocketModel[i].numPorts-1);
2188 if (num_aiops <= 0) {
2189 rcktpt_io_addr[i] = 0;
2194 /* Reset the AIOPIC, init the serial ports */
2195 for (aiop = 0; aiop < num_aiops; aiop++) {
2196 sResetAiopByNum(ctlp, aiop);
2197 num_chan = ports_per_aiop;
2198 for (chan = 0; chan < num_chan; chan++)
2199 init_r_port(i, aiop, chan, dev);
2202 /* Rocket modems must be reset */
2203 if ((rcktpt_type[i] == ROCKET_TYPE_MODEM) ||
2204 (rcktpt_type[i] == ROCKET_TYPE_MODEMII) ||
2205 (rcktpt_type[i] == ROCKET_TYPE_MODEMIII)) {
2206 num_chan = ports_per_aiop;
2207 for (chan = 0; chan < num_chan; chan++)
2208 sPCIModemReset(ctlp, chan, 1);
2210 for (chan = 0; chan < num_chan; chan++)
2211 sPCIModemReset(ctlp, chan, 0);
2213 rmSpeakerReset(ctlp, rocketModel[i].model);
2219 * Probes for PCI cards, inits them if found
2220 * Input: board_found = number of ISA boards already found, or the
2221 * starting board number
2222 * Returns: Number of PCI boards found
2224 static int __init init_PCI(int boards_found)
2226 struct pci_dev *dev = NULL;
2229 /* Work through the PCI device list, pulling out ours */
2230 while ((dev = pci_get_device(PCI_VENDOR_ID_RP, PCI_ANY_ID, dev))) {
2231 if (register_PCI(count + boards_found, dev))
2237 #endif /* CONFIG_PCI */
2240 * Probes for ISA cards
2241 * Input: i = the board number to look for
2242 * Returns: 1 if board found, 0 else
2244 static int __init init_ISA(int i)
2246 int num_aiops, num_chan = 0, total_num_chan = 0;
2248 unsigned int aiopio[MAX_AIOPS_PER_BOARD];
2252 /* If io_addr is zero, no board configured */
2253 if (rcktpt_io_addr[i] == 0)
2256 /* Reserve the IO region */
2257 if (!request_region(rcktpt_io_addr[i], 64, "Comtrol RocketPort")) {
2258 printk(KERN_ERR "Unable to reserve IO region for configured "
2259 "ISA RocketPort at address 0x%lx, board not "
2260 "installed...\n", rcktpt_io_addr[i]);
2261 rcktpt_io_addr[i] = 0;
2265 ctlp = sCtlNumToCtlPtr(i);
2267 ctlp->boardType = rcktpt_type[i];
2269 switch (rcktpt_type[i]) {
2270 case ROCKET_TYPE_PC104:
2271 type_string = "(PC104)";
2273 case ROCKET_TYPE_MODEM:
2274 type_string = "(RocketModem)";
2276 case ROCKET_TYPE_MODEMII:
2277 type_string = "(RocketModem II)";
2285 * If support_low_speed is set, use the slow clock prescale,
2286 * which supports 50 bps
2288 if (support_low_speed) {
2289 sClockPrescale = 0x19; /* mod 9 (divide by 10) prescale */
2290 rp_baud_base[i] = 230400;
2292 sClockPrescale = 0x14; /* mod 4 (devide by 5) prescale */
2293 rp_baud_base[i] = 460800;
2296 for (aiop = 0; aiop < MAX_AIOPS_PER_BOARD; aiop++)
2297 aiopio[aiop] = rcktpt_io_addr[i] + (aiop * 0x400);
2299 num_aiops = sInitController(ctlp, i, controller + (i * 0x400), aiopio, MAX_AIOPS_PER_BOARD, 0, FREQ_DIS, 0);
2301 if (ctlp->boardType == ROCKET_TYPE_PC104) {
2302 sEnAiop(ctlp, 2); /* only one AIOPIC, but these */
2303 sEnAiop(ctlp, 3); /* CSels used for other stuff */
2306 /* If something went wrong initing the AIOP's release the ISA IO memory */
2307 if (num_aiops <= 0) {
2308 release_region(rcktpt_io_addr[i], 64);
2309 rcktpt_io_addr[i] = 0;
2313 rocketModel[i].startingPortNumber = nextLineNumber;
2315 for (aiop = 0; aiop < num_aiops; aiop++) {
2316 sResetAiopByNum(ctlp, aiop);
2317 sEnAiop(ctlp, aiop);
2318 num_chan = sGetAiopNumChan(ctlp, aiop);
2319 total_num_chan += num_chan;
2320 for (chan = 0; chan < num_chan; chan++)
2321 init_r_port(i, aiop, chan, NULL);
2324 if ((rcktpt_type[i] == ROCKET_TYPE_MODEM) || (rcktpt_type[i] == ROCKET_TYPE_MODEMII)) {
2325 num_chan = sGetAiopNumChan(ctlp, 0);
2326 total_num_chan = num_chan;
2327 for (chan = 0; chan < num_chan; chan++)
2328 sModemReset(ctlp, chan, 1);
2330 for (chan = 0; chan < num_chan; chan++)
2331 sModemReset(ctlp, chan, 0);
2333 strcpy(rocketModel[i].modelString, "RocketModem ISA");
2335 strcpy(rocketModel[i].modelString, "RocketPort ISA");
2337 rocketModel[i].numPorts = total_num_chan;
2338 rocketModel[i].model = MODEL_ISA;
2340 printk(KERN_INFO "RocketPort ISA card #%d found at 0x%lx - %d AIOPs %s\n",
2341 i, rcktpt_io_addr[i], num_aiops, type_string);
2343 printk(KERN_INFO "Installing %s, creating /dev/ttyR%d - %ld\n",
2344 rocketModel[i].modelString,
2345 rocketModel[i].startingPortNumber,
2346 rocketModel[i].startingPortNumber +
2347 rocketModel[i].numPorts - 1);
2352 static const struct tty_operations rocket_ops = {
2356 .put_char = rp_put_char,
2357 .write_room = rp_write_room,
2358 .chars_in_buffer = rp_chars_in_buffer,
2359 .flush_buffer = rp_flush_buffer,
2361 .throttle = rp_throttle,
2362 .unthrottle = rp_unthrottle,
2363 .set_termios = rp_set_termios,
2366 .hangup = rp_hangup,
2367 .break_ctl = rp_break,
2368 .send_xchar = rp_send_xchar,
2369 .wait_until_sent = rp_wait_until_sent,
2370 .tiocmget = rp_tiocmget,
2371 .tiocmset = rp_tiocmset,
2375 * The module "startup" routine; it's run when the module is loaded.
2377 static int __init rp_init(void)
2379 int ret = -ENOMEM, pci_boards_found, isa_boards_found, i;
2381 printk(KERN_INFO "RocketPort device driver module, version %s, %s\n",
2382 ROCKET_VERSION, ROCKET_DATE);
2384 rocket_driver = alloc_tty_driver(MAX_RP_PORTS);
2389 * If board 1 is non-zero, there is at least one ISA configured. If controller is
2390 * zero, use the default controller IO address of board1 + 0x40.
2393 if (controller == 0)
2394 controller = board1 + 0x40;
2396 controller = 0; /* Used as a flag, meaning no ISA boards */
2399 /* If an ISA card is configured, reserve the 4 byte IO space for the Mudbac controller */
2400 if (controller && (!request_region(controller, 4, "Comtrol RocketPort"))) {
2401 printk(KERN_ERR "Unable to reserve IO region for first "
2402 "configured ISA RocketPort controller 0x%lx. "
2403 "Driver exiting\n", controller);
2408 /* Store ISA variable retrieved from command line or .conf file. */
2409 rcktpt_io_addr[0] = board1;
2410 rcktpt_io_addr[1] = board2;
2411 rcktpt_io_addr[2] = board3;
2412 rcktpt_io_addr[3] = board4;
2414 rcktpt_type[0] = modem1 ? ROCKET_TYPE_MODEM : ROCKET_TYPE_NORMAL;
2415 rcktpt_type[0] = pc104_1[0] ? ROCKET_TYPE_PC104 : rcktpt_type[0];
2416 rcktpt_type[1] = modem2 ? ROCKET_TYPE_MODEM : ROCKET_TYPE_NORMAL;
2417 rcktpt_type[1] = pc104_2[0] ? ROCKET_TYPE_PC104 : rcktpt_type[1];
2418 rcktpt_type[2] = modem3 ? ROCKET_TYPE_MODEM : ROCKET_TYPE_NORMAL;
2419 rcktpt_type[2] = pc104_3[0] ? ROCKET_TYPE_PC104 : rcktpt_type[2];
2420 rcktpt_type[3] = modem4 ? ROCKET_TYPE_MODEM : ROCKET_TYPE_NORMAL;
2421 rcktpt_type[3] = pc104_4[0] ? ROCKET_TYPE_PC104 : rcktpt_type[3];
2424 * Set up the tty driver structure and then register this
2425 * driver with the tty layer.
2428 rocket_driver->owner = THIS_MODULE;
2429 rocket_driver->flags = TTY_DRIVER_DYNAMIC_DEV;
2430 rocket_driver->name = "ttyR";
2431 rocket_driver->driver_name = "Comtrol RocketPort";
2432 rocket_driver->major = TTY_ROCKET_MAJOR;
2433 rocket_driver->minor_start = 0;
2434 rocket_driver->type = TTY_DRIVER_TYPE_SERIAL;
2435 rocket_driver->subtype = SERIAL_TYPE_NORMAL;
2436 rocket_driver->init_termios = tty_std_termios;
2437 rocket_driver->init_termios.c_cflag =
2438 B9600 | CS8 | CREAD | HUPCL | CLOCAL;
2439 rocket_driver->init_termios.c_ispeed = 9600;
2440 rocket_driver->init_termios.c_ospeed = 9600;
2441 #ifdef ROCKET_SOFT_FLOW
2442 rocket_driver->flags |= TTY_DRIVER_REAL_RAW;
2444 tty_set_operations(rocket_driver, &rocket_ops);
2446 ret = tty_register_driver(rocket_driver);
2448 printk(KERN_ERR "Couldn't install tty RocketPort driver\n");
2452 #ifdef ROCKET_DEBUG_OPEN
2453 printk(KERN_INFO "RocketPort driver is major %d\n", rocket_driver.major);
2457 * OK, let's probe each of the controllers looking for boards. Any boards found
2458 * will be initialized here.
2460 isa_boards_found = 0;
2461 pci_boards_found = 0;
2463 for (i = 0; i < NUM_BOARDS; i++) {
2469 if (isa_boards_found < NUM_BOARDS)
2470 pci_boards_found = init_PCI(isa_boards_found);
2473 max_board = pci_boards_found + isa_boards_found;
2475 if (max_board == 0) {
2476 printk(KERN_ERR "No rocketport ports found; unloading driver\n");
2483 tty_unregister_driver(rocket_driver);
2485 put_tty_driver(rocket_driver);
2491 static void rp_cleanup_module(void)
2496 del_timer_sync(&rocket_timer);
2498 retval = tty_unregister_driver(rocket_driver);
2500 printk(KERN_ERR "Error %d while trying to unregister "
2501 "rocketport driver\n", -retval);
2503 for (i = 0; i < MAX_RP_PORTS; i++)
2505 tty_unregister_device(rocket_driver, i);
2509 put_tty_driver(rocket_driver);
2511 for (i = 0; i < NUM_BOARDS; i++) {
2512 if (rcktpt_io_addr[i] <= 0 || is_PCI[i])
2514 release_region(rcktpt_io_addr[i], 64);
2517 release_region(controller, 4);
2520 /***************************************************************************
2521 Function: sInitController
2522 Purpose: Initialization of controller global registers and controller
2524 Call: sInitController(CtlP,CtlNum,MudbacIO,AiopIOList,AiopIOListSize,
2525 IRQNum,Frequency,PeriodicOnly)
2526 CONTROLLER_T *CtlP; Ptr to controller structure
2527 int CtlNum; Controller number
2528 ByteIO_t MudbacIO; Mudbac base I/O address.
2529 ByteIO_t *AiopIOList; List of I/O addresses for each AIOP.
2530 This list must be in the order the AIOPs will be found on the
2531 controller. Once an AIOP in the list is not found, it is
2532 assumed that there are no more AIOPs on the controller.
2533 int AiopIOListSize; Number of addresses in AiopIOList
2534 int IRQNum; Interrupt Request number. Can be any of the following:
2535 0: Disable global interrupts
2544 Byte_t Frequency: A flag identifying the frequency
2545 of the periodic interrupt, can be any one of the following:
2546 FREQ_DIS - periodic interrupt disabled
2547 FREQ_137HZ - 137 Hertz
2548 FREQ_69HZ - 69 Hertz
2549 FREQ_34HZ - 34 Hertz
2550 FREQ_17HZ - 17 Hertz
2553 If IRQNum is set to 0 the Frequency parameter is
2554 overidden, it is forced to a value of FREQ_DIS.
2555 int PeriodicOnly: 1 if all interrupts except the periodic
2556 interrupt are to be blocked.
2557 0 is both the periodic interrupt and
2558 other channel interrupts are allowed.
2559 If IRQNum is set to 0 the PeriodicOnly parameter is
2560 overidden, it is forced to a value of 0.
2561 Return: int: Number of AIOPs on the controller, or CTLID_NULL if controller
2562 initialization failed.
2565 If periodic interrupts are to be disabled but AIOP interrupts
2566 are allowed, set Frequency to FREQ_DIS and PeriodicOnly to 0.
2568 If interrupts are to be completely disabled set IRQNum to 0.
2570 Setting Frequency to FREQ_DIS and PeriodicOnly to 1 is an
2571 invalid combination.
2573 This function performs initialization of global interrupt modes,
2574 but it does not actually enable global interrupts. To enable
2575 and disable global interrupts use functions sEnGlobalInt() and
2576 sDisGlobalInt(). Enabling of global interrupts is normally not
2577 done until all other initializations are complete.
2579 Even if interrupts are globally enabled, they must also be
2580 individually enabled for each channel that is to generate
2583 Warnings: No range checking on any of the parameters is done.
2585 No context switches are allowed while executing this function.
2587 After this function all AIOPs on the controller are disabled,
2588 they can be enabled with sEnAiop().
2590 static int sInitController(CONTROLLER_T * CtlP, int CtlNum, ByteIO_t MudbacIO,
2591 ByteIO_t * AiopIOList, int AiopIOListSize,
2592 int IRQNum, Byte_t Frequency, int PeriodicOnly)
2598 CtlP->AiopIntrBits = aiop_intr_bits;
2599 CtlP->AltChanRingIndicator = 0;
2600 CtlP->CtlNum = CtlNum;
2601 CtlP->CtlID = CTLID_0001; /* controller release 1 */
2602 CtlP->BusType = isISA;
2603 CtlP->MBaseIO = MudbacIO;
2604 CtlP->MReg1IO = MudbacIO + 1;
2605 CtlP->MReg2IO = MudbacIO + 2;
2606 CtlP->MReg3IO = MudbacIO + 3;
2608 CtlP->MReg2 = 0; /* interrupt disable */
2609 CtlP->MReg3 = 0; /* no periodic interrupts */
2611 if (sIRQMap[IRQNum] == 0) { /* interrupts globally disabled */
2612 CtlP->MReg2 = 0; /* interrupt disable */
2613 CtlP->MReg3 = 0; /* no periodic interrupts */
2615 CtlP->MReg2 = sIRQMap[IRQNum]; /* set IRQ number */
2616 CtlP->MReg3 = Frequency; /* set frequency */
2617 if (PeriodicOnly) { /* periodic interrupt only */
2618 CtlP->MReg3 |= PERIODIC_ONLY;
2622 sOutB(CtlP->MReg2IO, CtlP->MReg2);
2623 sOutB(CtlP->MReg3IO, CtlP->MReg3);
2624 sControllerEOI(CtlP); /* clear EOI if warm init */
2627 for (i = done = 0; i < AiopIOListSize; i++) {
2629 CtlP->AiopIO[i] = (WordIO_t) io;
2630 CtlP->AiopIntChanIO[i] = io + _INT_CHAN;
2631 sOutB(CtlP->MReg2IO, CtlP->MReg2 | (i & 0x03)); /* AIOP index */
2632 sOutB(MudbacIO, (Byte_t) (io >> 6)); /* set up AIOP I/O in MUDBAC */
2635 sEnAiop(CtlP, i); /* enable the AIOP */
2636 CtlP->AiopID[i] = sReadAiopID(io); /* read AIOP ID */
2637 if (CtlP->AiopID[i] == AIOPID_NULL) /* if AIOP does not exist */
2638 done = 1; /* done looking for AIOPs */
2640 CtlP->AiopNumChan[i] = sReadAiopNumChan((WordIO_t) io); /* num channels in AIOP */
2641 sOutW((WordIO_t) io + _INDX_ADDR, _CLK_PRE); /* clock prescaler */
2642 sOutB(io + _INDX_DATA, sClockPrescale);
2643 CtlP->NumAiop++; /* bump count of AIOPs */
2645 sDisAiop(CtlP, i); /* disable AIOP */
2648 if (CtlP->NumAiop == 0)
2651 return (CtlP->NumAiop);
2654 /***************************************************************************
2655 Function: sPCIInitController
2656 Purpose: Initialization of controller global registers and controller
2658 Call: sPCIInitController(CtlP,CtlNum,AiopIOList,AiopIOListSize,
2659 IRQNum,Frequency,PeriodicOnly)
2660 CONTROLLER_T *CtlP; Ptr to controller structure
2661 int CtlNum; Controller number
2662 ByteIO_t *AiopIOList; List of I/O addresses for each AIOP.
2663 This list must be in the order the AIOPs will be found on the
2664 controller. Once an AIOP in the list is not found, it is
2665 assumed that there are no more AIOPs on the controller.
2666 int AiopIOListSize; Number of addresses in AiopIOList
2667 int IRQNum; Interrupt Request number. Can be any of the following:
2668 0: Disable global interrupts
2677 Byte_t Frequency: A flag identifying the frequency
2678 of the periodic interrupt, can be any one of the following:
2679 FREQ_DIS - periodic interrupt disabled
2680 FREQ_137HZ - 137 Hertz
2681 FREQ_69HZ - 69 Hertz
2682 FREQ_34HZ - 34 Hertz
2683 FREQ_17HZ - 17 Hertz
2686 If IRQNum is set to 0 the Frequency parameter is
2687 overidden, it is forced to a value of FREQ_DIS.
2688 int PeriodicOnly: 1 if all interrupts except the periodic
2689 interrupt are to be blocked.
2690 0 is both the periodic interrupt and
2691 other channel interrupts are allowed.
2692 If IRQNum is set to 0 the PeriodicOnly parameter is
2693 overidden, it is forced to a value of 0.
2694 Return: int: Number of AIOPs on the controller, or CTLID_NULL if controller
2695 initialization failed.
2698 If periodic interrupts are to be disabled but AIOP interrupts
2699 are allowed, set Frequency to FREQ_DIS and PeriodicOnly to 0.
2701 If interrupts are to be completely disabled set IRQNum to 0.
2703 Setting Frequency to FREQ_DIS and PeriodicOnly to 1 is an
2704 invalid combination.
2706 This function performs initialization of global interrupt modes,
2707 but it does not actually enable global interrupts. To enable
2708 and disable global interrupts use functions sEnGlobalInt() and
2709 sDisGlobalInt(). Enabling of global interrupts is normally not
2710 done until all other initializations are complete.
2712 Even if interrupts are globally enabled, they must also be
2713 individually enabled for each channel that is to generate
2716 Warnings: No range checking on any of the parameters is done.
2718 No context switches are allowed while executing this function.
2720 After this function all AIOPs on the controller are disabled,
2721 they can be enabled with sEnAiop().
2723 static int sPCIInitController(CONTROLLER_T * CtlP, int CtlNum,
2724 ByteIO_t * AiopIOList, int AiopIOListSize,
2725 WordIO_t ConfigIO, int IRQNum, Byte_t Frequency,
2726 int PeriodicOnly, int altChanRingIndicator,
2732 CtlP->AltChanRingIndicator = altChanRingIndicator;
2733 CtlP->UPCIRingInd = UPCIRingInd;
2734 CtlP->CtlNum = CtlNum;
2735 CtlP->CtlID = CTLID_0001; /* controller release 1 */
2736 CtlP->BusType = isPCI; /* controller release 1 */
2740 CtlP->PCIIO = ConfigIO + _PCI_9030_INT_CTRL;
2741 CtlP->PCIIO2 = ConfigIO + _PCI_9030_GPIO_CTRL;
2742 CtlP->AiopIntrBits = upci_aiop_intr_bits;
2746 (WordIO_t) ((ByteIO_t) AiopIOList[0] + _PCI_INT_FUNC);
2747 CtlP->AiopIntrBits = aiop_intr_bits;
2750 sPCIControllerEOI(CtlP); /* clear EOI if warm init */
2753 for (i = 0; i < AiopIOListSize; i++) {
2755 CtlP->AiopIO[i] = (WordIO_t) io;
2756 CtlP->AiopIntChanIO[i] = io + _INT_CHAN;
2758 CtlP->AiopID[i] = sReadAiopID(io); /* read AIOP ID */
2759 if (CtlP->AiopID[i] == AIOPID_NULL) /* if AIOP does not exist */
2760 break; /* done looking for AIOPs */
2762 CtlP->AiopNumChan[i] = sReadAiopNumChan((WordIO_t) io); /* num channels in AIOP */
2763 sOutW((WordIO_t) io + _INDX_ADDR, _CLK_PRE); /* clock prescaler */
2764 sOutB(io + _INDX_DATA, sClockPrescale);
2765 CtlP->NumAiop++; /* bump count of AIOPs */
2768 if (CtlP->NumAiop == 0)
2771 return (CtlP->NumAiop);
2774 /***************************************************************************
2775 Function: sReadAiopID
2776 Purpose: Read the AIOP idenfication number directly from an AIOP.
2777 Call: sReadAiopID(io)
2778 ByteIO_t io: AIOP base I/O address
2779 Return: int: Flag AIOPID_XXXX if a valid AIOP is found, where X
2780 is replace by an identifying number.
2781 Flag AIOPID_NULL if no valid AIOP is found
2782 Warnings: No context switches are allowed while executing this function.
2785 static int sReadAiopID(ByteIO_t io)
2787 Byte_t AiopID; /* ID byte from AIOP */
2789 sOutB(io + _CMD_REG, RESET_ALL); /* reset AIOP */
2790 sOutB(io + _CMD_REG, 0x0);
2791 AiopID = sInW(io + _CHN_STAT0) & 0x07;
2794 else /* AIOP does not exist */
2798 /***************************************************************************
2799 Function: sReadAiopNumChan
2800 Purpose: Read the number of channels available in an AIOP directly from
2802 Call: sReadAiopNumChan(io)
2803 WordIO_t io: AIOP base I/O address
2804 Return: int: The number of channels available
2805 Comments: The number of channels is determined by write/reads from identical
2806 offsets within the SRAM address spaces for channels 0 and 4.
2807 If the channel 4 space is mirrored to channel 0 it is a 4 channel
2808 AIOP, otherwise it is an 8 channel.
2809 Warnings: No context switches are allowed while executing this function.
2811 static int sReadAiopNumChan(WordIO_t io)
2814 static Byte_t R[4] = { 0x00, 0x00, 0x34, 0x12 };
2816 /* write to chan 0 SRAM */
2817 out32((DWordIO_t) io + _INDX_ADDR, R);
2818 sOutW(io + _INDX_ADDR, 0); /* read from SRAM, chan 0 */
2819 x = sInW(io + _INDX_DATA);
2820 sOutW(io + _INDX_ADDR, 0x4000); /* read from SRAM, chan 4 */
2821 if (x != sInW(io + _INDX_DATA)) /* if different must be 8 chan */
2827 /***************************************************************************
2829 Purpose: Initialization of a channel and channel structure
2830 Call: sInitChan(CtlP,ChP,AiopNum,ChanNum)
2831 CONTROLLER_T *CtlP; Ptr to controller structure
2832 CHANNEL_T *ChP; Ptr to channel structure
2833 int AiopNum; AIOP number within controller
2834 int ChanNum; Channel number within AIOP
2835 Return: int: 1 if initialization succeeded, 0 if it fails because channel
2836 number exceeds number of channels available in AIOP.
2837 Comments: This function must be called before a channel can be used.
2838 Warnings: No range checking on any of the parameters is done.
2840 No context switches are allowed while executing this function.
2842 static int sInitChan(CONTROLLER_T * CtlP, CHANNEL_T * ChP, int AiopNum,
2853 if (ChanNum >= CtlP->AiopNumChan[AiopNum])
2854 return 0; /* exceeds num chans in AIOP */
2856 /* Channel, AIOP, and controller identifiers */
2858 ChP->ChanID = CtlP->AiopID[AiopNum];
2859 ChP->AiopNum = AiopNum;
2860 ChP->ChanNum = ChanNum;
2862 /* Global direct addresses */
2863 AiopIO = CtlP->AiopIO[AiopNum];
2864 ChP->Cmd = (ByteIO_t) AiopIO + _CMD_REG;
2865 ChP->IntChan = (ByteIO_t) AiopIO + _INT_CHAN;
2866 ChP->IntMask = (ByteIO_t) AiopIO + _INT_MASK;
2867 ChP->IndexAddr = (DWordIO_t) AiopIO + _INDX_ADDR;
2868 ChP->IndexData = AiopIO + _INDX_DATA;
2870 /* Channel direct addresses */
2871 ChIOOff = AiopIO + ChP->ChanNum * 2;
2872 ChP->TxRxData = ChIOOff + _TD0;
2873 ChP->ChanStat = ChIOOff + _CHN_STAT0;
2874 ChP->TxRxCount = ChIOOff + _FIFO_CNT0;
2875 ChP->IntID = (ByteIO_t) AiopIO + ChP->ChanNum + _INT_ID0;
2877 /* Initialize the channel from the RData array */
2878 for (i = 0; i < RDATASIZE; i += 4) {
2880 R[1] = RData[i + 1] + 0x10 * ChanNum;
2881 R[2] = RData[i + 2];
2882 R[3] = RData[i + 3];
2883 out32(ChP->IndexAddr, R);
2887 for (i = 0; i < RREGDATASIZE; i += 4) {
2888 ChR[i] = RRegData[i];
2889 ChR[i + 1] = RRegData[i + 1] + 0x10 * ChanNum;
2890 ChR[i + 2] = RRegData[i + 2];
2891 ChR[i + 3] = RRegData[i + 3];
2894 /* Indexed registers */
2895 ChOff = (Word_t) ChanNum *0x1000;
2897 if (sClockPrescale == 0x14)
2902 ChP->BaudDiv[0] = (Byte_t) (ChOff + _BAUD);
2903 ChP->BaudDiv[1] = (Byte_t) ((ChOff + _BAUD) >> 8);
2904 ChP->BaudDiv[2] = (Byte_t) brd9600;
2905 ChP->BaudDiv[3] = (Byte_t) (brd9600 >> 8);
2906 out32(ChP->IndexAddr, ChP->BaudDiv);
2908 ChP->TxControl[0] = (Byte_t) (ChOff + _TX_CTRL);
2909 ChP->TxControl[1] = (Byte_t) ((ChOff + _TX_CTRL) >> 8);
2910 ChP->TxControl[2] = 0;
2911 ChP->TxControl[3] = 0;
2912 out32(ChP->IndexAddr, ChP->TxControl);
2914 ChP->RxControl[0] = (Byte_t) (ChOff + _RX_CTRL);
2915 ChP->RxControl[1] = (Byte_t) ((ChOff + _RX_CTRL) >> 8);
2916 ChP->RxControl[2] = 0;
2917 ChP->RxControl[3] = 0;
2918 out32(ChP->IndexAddr, ChP->RxControl);
2920 ChP->TxEnables[0] = (Byte_t) (ChOff + _TX_ENBLS);
2921 ChP->TxEnables[1] = (Byte_t) ((ChOff + _TX_ENBLS) >> 8);
2922 ChP->TxEnables[2] = 0;
2923 ChP->TxEnables[3] = 0;
2924 out32(ChP->IndexAddr, ChP->TxEnables);
2926 ChP->TxCompare[0] = (Byte_t) (ChOff + _TXCMP1);
2927 ChP->TxCompare[1] = (Byte_t) ((ChOff + _TXCMP1) >> 8);
2928 ChP->TxCompare[2] = 0;
2929 ChP->TxCompare[3] = 0;
2930 out32(ChP->IndexAddr, ChP->TxCompare);
2932 ChP->TxReplace1[0] = (Byte_t) (ChOff + _TXREP1B1);
2933 ChP->TxReplace1[1] = (Byte_t) ((ChOff + _TXREP1B1) >> 8);
2934 ChP->TxReplace1[2] = 0;
2935 ChP->TxReplace1[3] = 0;
2936 out32(ChP->IndexAddr, ChP->TxReplace1);
2938 ChP->TxReplace2[0] = (Byte_t) (ChOff + _TXREP2);
2939 ChP->TxReplace2[1] = (Byte_t) ((ChOff + _TXREP2) >> 8);
2940 ChP->TxReplace2[2] = 0;
2941 ChP->TxReplace2[3] = 0;
2942 out32(ChP->IndexAddr, ChP->TxReplace2);
2944 ChP->TxFIFOPtrs = ChOff + _TXF_OUTP;
2945 ChP->TxFIFO = ChOff + _TX_FIFO;
2947 sOutB(ChP->Cmd, (Byte_t) ChanNum | RESTXFCNT); /* apply reset Tx FIFO count */
2948 sOutB(ChP->Cmd, (Byte_t) ChanNum); /* remove reset Tx FIFO count */
2949 sOutW((WordIO_t) ChP->IndexAddr, ChP->TxFIFOPtrs); /* clear Tx in/out ptrs */
2950 sOutW(ChP->IndexData, 0);
2951 ChP->RxFIFOPtrs = ChOff + _RXF_OUTP;
2952 ChP->RxFIFO = ChOff + _RX_FIFO;
2954 sOutB(ChP->Cmd, (Byte_t) ChanNum | RESRXFCNT); /* apply reset Rx FIFO count */
2955 sOutB(ChP->Cmd, (Byte_t) ChanNum); /* remove reset Rx FIFO count */
2956 sOutW((WordIO_t) ChP->IndexAddr, ChP->RxFIFOPtrs); /* clear Rx out ptr */
2957 sOutW(ChP->IndexData, 0);
2958 sOutW((WordIO_t) ChP->IndexAddr, ChP->RxFIFOPtrs + 2); /* clear Rx in ptr */
2959 sOutW(ChP->IndexData, 0);
2960 ChP->TxPrioCnt = ChOff + _TXP_CNT;
2961 sOutW((WordIO_t) ChP->IndexAddr, ChP->TxPrioCnt);
2962 sOutB(ChP->IndexData, 0);
2963 ChP->TxPrioPtr = ChOff + _TXP_PNTR;
2964 sOutW((WordIO_t) ChP->IndexAddr, ChP->TxPrioPtr);
2965 sOutB(ChP->IndexData, 0);
2966 ChP->TxPrioBuf = ChOff + _TXP_BUF;
2967 sEnRxProcessor(ChP); /* start the Rx processor */
2972 /***************************************************************************
2973 Function: sStopRxProcessor
2974 Purpose: Stop the receive processor from processing a channel.
2975 Call: sStopRxProcessor(ChP)
2976 CHANNEL_T *ChP; Ptr to channel structure
2978 Comments: The receive processor can be started again with sStartRxProcessor().
2979 This function causes the receive processor to skip over the
2980 stopped channel. It does not stop it from processing other channels.
2982 Warnings: No context switches are allowed while executing this function.
2984 Do not leave the receive processor stopped for more than one
2987 After calling this function a delay of 4 uS is required to ensure
2988 that the receive processor is no longer processing this channel.
2990 static void sStopRxProcessor(CHANNEL_T * ChP)
2998 out32(ChP->IndexAddr, R);
3001 /***************************************************************************
3002 Function: sFlushRxFIFO
3003 Purpose: Flush the Rx FIFO
3004 Call: sFlushRxFIFO(ChP)
3005 CHANNEL_T *ChP; Ptr to channel structure
3007 Comments: To prevent data from being enqueued or dequeued in the Tx FIFO
3008 while it is being flushed the receive processor is stopped
3009 and the transmitter is disabled. After these operations a
3010 4 uS delay is done before clearing the pointers to allow
3011 the receive processor to stop. These items are handled inside
3013 Warnings: No context switches are allowed while executing this function.
3015 static void sFlushRxFIFO(CHANNEL_T * ChP)
3018 Byte_t Ch; /* channel number within AIOP */
3019 int RxFIFOEnabled; /* 1 if Rx FIFO enabled */
3021 if (sGetRxCnt(ChP) == 0) /* Rx FIFO empty */
3022 return; /* don't need to flush */
3025 if (ChP->R[0x32] == 0x08) { /* Rx FIFO is enabled */
3027 sDisRxFIFO(ChP); /* disable it */
3028 for (i = 0; i < 2000 / 200; i++) /* delay 2 uS to allow proc to disable FIFO */
3029 sInB(ChP->IntChan); /* depends on bus i/o timing */
3031 sGetChanStatus(ChP); /* clear any pending Rx errors in chan stat */
3032 Ch = (Byte_t) sGetChanNum(ChP);
3033 sOutB(ChP->Cmd, Ch | RESRXFCNT); /* apply reset Rx FIFO count */
3034 sOutB(ChP->Cmd, Ch); /* remove reset Rx FIFO count */
3035 sOutW((WordIO_t) ChP->IndexAddr, ChP->RxFIFOPtrs); /* clear Rx out ptr */
3036 sOutW(ChP->IndexData, 0);
3037 sOutW((WordIO_t) ChP->IndexAddr, ChP->RxFIFOPtrs + 2); /* clear Rx in ptr */
3038 sOutW(ChP->IndexData, 0);
3040 sEnRxFIFO(ChP); /* enable Rx FIFO */
3043 /***************************************************************************
3044 Function: sFlushTxFIFO
3045 Purpose: Flush the Tx FIFO
3046 Call: sFlushTxFIFO(ChP)
3047 CHANNEL_T *ChP; Ptr to channel structure
3049 Comments: To prevent data from being enqueued or dequeued in the Tx FIFO
3050 while it is being flushed the receive processor is stopped
3051 and the transmitter is disabled. After these operations a
3052 4 uS delay is done before clearing the pointers to allow
3053 the receive processor to stop. These items are handled inside
3055 Warnings: No context switches are allowed while executing this function.
3057 static void sFlushTxFIFO(CHANNEL_T * ChP)
3060 Byte_t Ch; /* channel number within AIOP */
3061 int TxEnabled; /* 1 if transmitter enabled */
3063 if (sGetTxCnt(ChP) == 0) /* Tx FIFO empty */
3064 return; /* don't need to flush */
3067 if (ChP->TxControl[3] & TX_ENABLE) {
3069 sDisTransmit(ChP); /* disable transmitter */
3071 sStopRxProcessor(ChP); /* stop Rx processor */
3072 for (i = 0; i < 4000 / 200; i++) /* delay 4 uS to allow proc to stop */
3073 sInB(ChP->IntChan); /* depends on bus i/o timing */
3074 Ch = (Byte_t) sGetChanNum(ChP);
3075 sOutB(ChP->Cmd, Ch | RESTXFCNT); /* apply reset Tx FIFO count */
3076 sOutB(ChP->Cmd, Ch); /* remove reset Tx FIFO count */
3077 sOutW((WordIO_t) ChP->IndexAddr, ChP->TxFIFOPtrs); /* clear Tx in/out ptrs */
3078 sOutW(ChP->IndexData, 0);
3080 sEnTransmit(ChP); /* enable transmitter */
3081 sStartRxProcessor(ChP); /* restart Rx processor */
3084 /***************************************************************************
3085 Function: sWriteTxPrioByte
3086 Purpose: Write a byte of priority transmit data to a channel
3087 Call: sWriteTxPrioByte(ChP,Data)
3088 CHANNEL_T *ChP; Ptr to channel structure
3089 Byte_t Data; The transmit data byte
3091 Return: int: 1 if the bytes is successfully written, otherwise 0.
3093 Comments: The priority byte is transmitted before any data in the Tx FIFO.
3095 Warnings: No context switches are allowed while executing this function.
3097 static int sWriteTxPrioByte(CHANNEL_T * ChP, Byte_t Data)
3099 Byte_t DWBuf[4]; /* buffer for double word writes */
3100 Word_t *WordPtr; /* must be far because Win SS != DS */
3101 register DWordIO_t IndexAddr;
3103 if (sGetTxCnt(ChP) > 1) { /* write it to Tx priority buffer */
3104 IndexAddr = ChP->IndexAddr;
3105 sOutW((WordIO_t) IndexAddr, ChP->TxPrioCnt); /* get priority buffer status */
3106 if (sInB((ByteIO_t) ChP->IndexData) & PRI_PEND) /* priority buffer busy */
3107 return (0); /* nothing sent */
3109 WordPtr = (Word_t *) (&DWBuf[0]);
3110 *WordPtr = ChP->TxPrioBuf; /* data byte address */
3112 DWBuf[2] = Data; /* data byte value */
3113 out32(IndexAddr, DWBuf); /* write it out */
3115 *WordPtr = ChP->TxPrioCnt; /* Tx priority count address */
3117 DWBuf[2] = PRI_PEND + 1; /* indicate 1 byte pending */
3118 DWBuf[3] = 0; /* priority buffer pointer */
3119 out32(IndexAddr, DWBuf); /* write it out */
3120 } else { /* write it to Tx FIFO */
3122 sWriteTxByte(sGetTxRxDataIO(ChP), Data);
3124 return (1); /* 1 byte sent */
3127 /***************************************************************************
3128 Function: sEnInterrupts
3129 Purpose: Enable one or more interrupts for a channel
3130 Call: sEnInterrupts(ChP,Flags)
3131 CHANNEL_T *ChP; Ptr to channel structure
3132 Word_t Flags: Interrupt enable flags, can be any combination
3133 of the following flags:
3134 TXINT_EN: Interrupt on Tx FIFO empty
3135 RXINT_EN: Interrupt on Rx FIFO at trigger level (see
3137 SRCINT_EN: Interrupt on SRC (Special Rx Condition)
3138 MCINT_EN: Interrupt on modem input change
3139 CHANINT_EN: Allow channel interrupt signal to the AIOP's
3140 Interrupt Channel Register.
3142 Comments: If an interrupt enable flag is set in Flags, that interrupt will be
3143 enabled. If an interrupt enable flag is not set in Flags, that
3144 interrupt will not be changed. Interrupts can be disabled with
3145 function sDisInterrupts().
3147 This function sets the appropriate bit for the channel in the AIOP's
3148 Interrupt Mask Register if the CHANINT_EN flag is set. This allows
3149 this channel's bit to be set in the AIOP's Interrupt Channel Register.
3151 Interrupts must also be globally enabled before channel interrupts
3152 will be passed on to the host. This is done with function
3155 In some cases it may be desirable to disable interrupts globally but
3156 enable channel interrupts. This would allow the global interrupt
3157 status register to be used to determine which AIOPs need service.
3159 static void sEnInterrupts(CHANNEL_T * ChP, Word_t Flags)
3161 Byte_t Mask; /* Interrupt Mask Register */
3163 ChP->RxControl[2] |=
3164 ((Byte_t) Flags & (RXINT_EN | SRCINT_EN | MCINT_EN));
3166 out32(ChP->IndexAddr, ChP->RxControl);
3168 ChP->TxControl[2] |= ((Byte_t) Flags & TXINT_EN);
3170 out32(ChP->IndexAddr, ChP->TxControl);
3172 if (Flags & CHANINT_EN) {
3173 Mask = sInB(ChP->IntMask) | sBitMapSetTbl[ChP->ChanNum];
3174 sOutB(ChP->IntMask, Mask);
3178 /***************************************************************************
3179 Function: sDisInterrupts
3180 Purpose: Disable one or more interrupts for a channel
3181 Call: sDisInterrupts(ChP,Flags)
3182 CHANNEL_T *ChP; Ptr to channel structure
3183 Word_t Flags: Interrupt flags, can be any combination
3184 of the following flags:
3185 TXINT_EN: Interrupt on Tx FIFO empty
3186 RXINT_EN: Interrupt on Rx FIFO at trigger level (see
3188 SRCINT_EN: Interrupt on SRC (Special Rx Condition)
3189 MCINT_EN: Interrupt on modem input change
3190 CHANINT_EN: Disable channel interrupt signal to the
3191 AIOP's Interrupt Channel Register.
3193 Comments: If an interrupt flag is set in Flags, that interrupt will be
3194 disabled. If an interrupt flag is not set in Flags, that
3195 interrupt will not be changed. Interrupts can be enabled with
3196 function sEnInterrupts().
3198 This function clears the appropriate bit for the channel in the AIOP's
3199 Interrupt Mask Register if the CHANINT_EN flag is set. This blocks
3200 this channel's bit from being set in the AIOP's Interrupt Channel
3203 static void sDisInterrupts(CHANNEL_T * ChP, Word_t Flags)
3205 Byte_t Mask; /* Interrupt Mask Register */
3207 ChP->RxControl[2] &=
3208 ~((Byte_t) Flags & (RXINT_EN | SRCINT_EN | MCINT_EN));
3209 out32(ChP->IndexAddr, ChP->RxControl);
3210 ChP->TxControl[2] &= ~((Byte_t) Flags & TXINT_EN);
3211 out32(ChP->IndexAddr, ChP->TxControl);
3213 if (Flags & CHANINT_EN) {
3214 Mask = sInB(ChP->IntMask) & sBitMapClrTbl[ChP->ChanNum];
3215 sOutB(ChP->IntMask, Mask);
3219 static void sSetInterfaceMode(CHANNEL_T * ChP, Byte_t mode)
3221 sOutB(ChP->CtlP->AiopIO[2], (mode & 0x18) | ChP->ChanNum);
3225 * Not an official SSCI function, but how to reset RocketModems.
3228 static void sModemReset(CONTROLLER_T * CtlP, int chan, int on)
3233 addr = CtlP->AiopIO[0] + 0x400;
3234 val = sInB(CtlP->MReg3IO);
3235 /* if AIOP[1] is not enabled, enable it */
3236 if ((val & 2) == 0) {
3237 val = sInB(CtlP->MReg2IO);
3238 sOutB(CtlP->MReg2IO, (val & 0xfc) | (1 & 0x03));
3239 sOutB(CtlP->MBaseIO, (unsigned char) (addr >> 6));
3245 sOutB(addr + chan, 0); /* apply or remove reset */
3250 * Not an official SSCI function, but how to reset RocketModems.
3253 static void sPCIModemReset(CONTROLLER_T * CtlP, int chan, int on)
3257 addr = CtlP->AiopIO[0] + 0x40; /* 2nd AIOP */
3260 sOutB(addr + chan, 0); /* apply or remove reset */
3263 /* Resets the speaker controller on RocketModem II and III devices */
3264 static void rmSpeakerReset(CONTROLLER_T * CtlP, unsigned long model)
3268 /* RocketModem II speaker control is at the 8th port location of offset 0x40 */
3269 if ((model == MODEL_RP4M) || (model == MODEL_RP6M)) {
3270 addr = CtlP->AiopIO[0] + 0x4F;
3274 /* RocketModem III speaker control is at the 1st port location of offset 0x80 */
3275 if ((model == MODEL_UPCI_RM3_8PORT)
3276 || (model == MODEL_UPCI_RM3_4PORT)) {
3277 addr = CtlP->AiopIO[0] + 0x88;
3282 /* Returns the line number given the controller (board), aiop and channel number */
3283 static unsigned char GetLineNumber(int ctrl, int aiop, int ch)
3285 return lineNumbers[(ctrl << 5) | (aiop << 3) | ch];
3289 * Stores the line number associated with a given controller (board), aiop
3290 * and channel number.
3291 * Returns: The line number assigned
3293 static unsigned char SetLineNumber(int ctrl, int aiop, int ch)
3295 lineNumbers[(ctrl << 5) | (aiop << 3) | ch] = nextLineNumber++;
3296 return (nextLineNumber - 1);