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 <linux/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 bool 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;
138 static const struct tty_port_operations rocket_port_ops;
141 * The following arrays define the interrupt bits corresponding to each AIOP.
142 * These bits are different between the ISA and regular PCI boards and the
143 * Universal PCI boards.
146 static Word_t aiop_intr_bits[AIOP_CTL_SIZE] = {
154 static Word_t upci_aiop_intr_bits[AIOP_CTL_SIZE] = {
155 UPCI_AIOP_INTR_BIT_0,
156 UPCI_AIOP_INTR_BIT_1,
157 UPCI_AIOP_INTR_BIT_2,
162 static Byte_t RData[RDATASIZE] = {
163 0x00, 0x09, 0xf6, 0x82,
164 0x02, 0x09, 0x86, 0xfb,
165 0x04, 0x09, 0x00, 0x0a,
166 0x06, 0x09, 0x01, 0x0a,
167 0x08, 0x09, 0x8a, 0x13,
168 0x0a, 0x09, 0xc5, 0x11,
169 0x0c, 0x09, 0x86, 0x85,
170 0x0e, 0x09, 0x20, 0x0a,
171 0x10, 0x09, 0x21, 0x0a,
172 0x12, 0x09, 0x41, 0xff,
173 0x14, 0x09, 0x82, 0x00,
174 0x16, 0x09, 0x82, 0x7b,
175 0x18, 0x09, 0x8a, 0x7d,
176 0x1a, 0x09, 0x88, 0x81,
177 0x1c, 0x09, 0x86, 0x7a,
178 0x1e, 0x09, 0x84, 0x81,
179 0x20, 0x09, 0x82, 0x7c,
180 0x22, 0x09, 0x0a, 0x0a
183 static Byte_t RRegData[RREGDATASIZE] = {
184 0x00, 0x09, 0xf6, 0x82, /* 00: Stop Rx processor */
185 0x08, 0x09, 0x8a, 0x13, /* 04: Tx software flow control */
186 0x0a, 0x09, 0xc5, 0x11, /* 08: XON char */
187 0x0c, 0x09, 0x86, 0x85, /* 0c: XANY */
188 0x12, 0x09, 0x41, 0xff, /* 10: Rx mask char */
189 0x14, 0x09, 0x82, 0x00, /* 14: Compare/Ignore #0 */
190 0x16, 0x09, 0x82, 0x7b, /* 18: Compare #1 */
191 0x18, 0x09, 0x8a, 0x7d, /* 1c: Compare #2 */
192 0x1a, 0x09, 0x88, 0x81, /* 20: Interrupt #1 */
193 0x1c, 0x09, 0x86, 0x7a, /* 24: Ignore/Replace #1 */
194 0x1e, 0x09, 0x84, 0x81, /* 28: Interrupt #2 */
195 0x20, 0x09, 0x82, 0x7c, /* 2c: Ignore/Replace #2 */
196 0x22, 0x09, 0x0a, 0x0a /* 30: Rx FIFO Enable */
199 static CONTROLLER_T sController[CTL_SIZE] = {
200 {-1, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, {0, 0, 0, 0},
201 {0, 0, 0, 0}, {-1, -1, -1, -1}, {0, 0, 0, 0}},
202 {-1, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, {0, 0, 0, 0},
203 {0, 0, 0, 0}, {-1, -1, -1, -1}, {0, 0, 0, 0}},
204 {-1, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, {0, 0, 0, 0},
205 {0, 0, 0, 0}, {-1, -1, -1, -1}, {0, 0, 0, 0}},
206 {-1, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, {0, 0, 0, 0},
207 {0, 0, 0, 0}, {-1, -1, -1, -1}, {0, 0, 0, 0}}
210 static Byte_t sBitMapClrTbl[8] = {
211 0xfe, 0xfd, 0xfb, 0xf7, 0xef, 0xdf, 0xbf, 0x7f
214 static Byte_t sBitMapSetTbl[8] = {
215 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80
218 static int sClockPrescale = 0x14;
221 * Line number is the ttySIx number (x), the Minor number. We
222 * assign them sequentially, starting at zero. The following
223 * array keeps track of the line number assigned to a given board/aiop/channel.
225 static unsigned char lineNumbers[MAX_RP_PORTS];
226 static unsigned long nextLineNumber;
228 /***** RocketPort Static Prototypes *********/
229 static int __init init_ISA(int i);
230 static void rp_wait_until_sent(struct tty_struct *tty, int timeout);
231 static void rp_flush_buffer(struct tty_struct *tty);
232 static unsigned char GetLineNumber(int ctrl, int aiop, int ch);
233 static unsigned char SetLineNumber(int ctrl, int aiop, int ch);
234 static void rp_start(struct tty_struct *tty);
235 static int sInitChan(CONTROLLER_T * CtlP, CHANNEL_T * ChP, int AiopNum,
237 static void sSetInterfaceMode(CHANNEL_T * ChP, Byte_t mode);
238 static void sFlushRxFIFO(CHANNEL_T * ChP);
239 static void sFlushTxFIFO(CHANNEL_T * ChP);
240 static void sEnInterrupts(CHANNEL_T * ChP, Word_t Flags);
241 static void sDisInterrupts(CHANNEL_T * ChP, Word_t Flags);
242 static void sModemReset(CONTROLLER_T * CtlP, int chan, int on);
243 static void sPCIModemReset(CONTROLLER_T * CtlP, int chan, int on);
244 static int sWriteTxPrioByte(CHANNEL_T * ChP, Byte_t Data);
245 static int sInitController(CONTROLLER_T * CtlP, int CtlNum, ByteIO_t MudbacIO,
246 ByteIO_t * AiopIOList, int AiopIOListSize,
247 int IRQNum, Byte_t Frequency, int PeriodicOnly);
248 static int sReadAiopID(ByteIO_t io);
249 static int sReadAiopNumChan(WordIO_t io);
251 MODULE_AUTHOR("Theodore Ts'o");
252 MODULE_DESCRIPTION("Comtrol RocketPort driver");
253 module_param(board1, ulong, 0);
254 MODULE_PARM_DESC(board1, "I/O port for (ISA) board #1");
255 module_param(board2, ulong, 0);
256 MODULE_PARM_DESC(board2, "I/O port for (ISA) board #2");
257 module_param(board3, ulong, 0);
258 MODULE_PARM_DESC(board3, "I/O port for (ISA) board #3");
259 module_param(board4, ulong, 0);
260 MODULE_PARM_DESC(board4, "I/O port for (ISA) board #4");
261 module_param(controller, ulong, 0);
262 MODULE_PARM_DESC(controller, "I/O port for (ISA) rocketport controller");
263 module_param(support_low_speed, bool, 0);
264 MODULE_PARM_DESC(support_low_speed, "1 means support 50 baud, 0 means support 460400 baud");
265 module_param(modem1, ulong, 0);
266 MODULE_PARM_DESC(modem1, "1 means (ISA) board #1 is a RocketModem");
267 module_param(modem2, ulong, 0);
268 MODULE_PARM_DESC(modem2, "1 means (ISA) board #2 is a RocketModem");
269 module_param(modem3, ulong, 0);
270 MODULE_PARM_DESC(modem3, "1 means (ISA) board #3 is a RocketModem");
271 module_param(modem4, ulong, 0);
272 MODULE_PARM_DESC(modem4, "1 means (ISA) board #4 is a RocketModem");
273 module_param_array(pc104_1, ulong, NULL, 0);
274 MODULE_PARM_DESC(pc104_1, "set interface types for ISA(PC104) board #1 (e.g. pc104_1=232,232,485,485,...");
275 module_param_array(pc104_2, ulong, NULL, 0);
276 MODULE_PARM_DESC(pc104_2, "set interface types for ISA(PC104) board #2 (e.g. pc104_2=232,232,485,485,...");
277 module_param_array(pc104_3, ulong, NULL, 0);
278 MODULE_PARM_DESC(pc104_3, "set interface types for ISA(PC104) board #3 (e.g. pc104_3=232,232,485,485,...");
279 module_param_array(pc104_4, ulong, NULL, 0);
280 MODULE_PARM_DESC(pc104_4, "set interface types for ISA(PC104) board #4 (e.g. pc104_4=232,232,485,485,...");
282 static int __init rp_init(void);
283 static void rp_cleanup_module(void);
285 module_init(rp_init);
286 module_exit(rp_cleanup_module);
289 MODULE_LICENSE("Dual BSD/GPL");
291 /*************************************************************************/
292 /* Module code starts here */
294 static inline int rocket_paranoia_check(struct r_port *info,
297 #ifdef ROCKET_PARANOIA_CHECK
300 if (info->magic != RPORT_MAGIC) {
301 printk(KERN_WARNING "Warning: bad magic number for rocketport "
302 "struct in %s\n", routine);
310 /* Serial port receive data function. Called (from timer poll) when an AIOPIC signals
311 * that receive data is present on a serial port. Pulls data from FIFO, moves it into the
314 static void rp_do_receive(struct r_port *info, CHANNEL_t *cp,
315 unsigned int ChanStatus)
317 unsigned int CharNStat;
318 int ToRecv, wRecv, space;
321 ToRecv = sGetRxCnt(cp);
322 #ifdef ROCKET_DEBUG_INTR
323 printk(KERN_INFO "rp_do_receive(%d)...\n", ToRecv);
329 * if status indicates there are errored characters in the
330 * FIFO, then enter status mode (a word in FIFO holds
331 * character and status).
333 if (ChanStatus & (RXFOVERFL | RXBREAK | RXFRAME | RXPARITY)) {
334 if (!(ChanStatus & STATMODE)) {
335 #ifdef ROCKET_DEBUG_RECEIVE
336 printk(KERN_INFO "Entering STATMODE...\n");
338 ChanStatus |= STATMODE;
344 * if we previously entered status mode, then read down the
345 * FIFO one word at a time, pulling apart the character and
346 * the status. Update error counters depending on status
348 if (ChanStatus & STATMODE) {
349 #ifdef ROCKET_DEBUG_RECEIVE
350 printk(KERN_INFO "Ignore %x, read %x...\n",
351 info->ignore_status_mask, info->read_status_mask);
356 CharNStat = sInW(sGetTxRxDataIO(cp));
357 #ifdef ROCKET_DEBUG_RECEIVE
358 printk(KERN_INFO "%x...\n", CharNStat);
360 if (CharNStat & STMBREAKH)
361 CharNStat &= ~(STMFRAMEH | STMPARITYH);
362 if (CharNStat & info->ignore_status_mask) {
366 CharNStat &= info->read_status_mask;
367 if (CharNStat & STMBREAKH)
369 else if (CharNStat & STMPARITYH)
371 else if (CharNStat & STMFRAMEH)
373 else if (CharNStat & STMRCVROVRH)
377 tty_insert_flip_char(&info->port, CharNStat & 0xff,
383 * after we've emptied the FIFO in status mode, turn
384 * status mode back off
386 if (sGetRxCnt(cp) == 0) {
387 #ifdef ROCKET_DEBUG_RECEIVE
388 printk(KERN_INFO "Status mode off.\n");
390 sDisRxStatusMode(cp);
394 * we aren't in status mode, so read down the FIFO two
395 * characters at time by doing repeated word IO
398 space = tty_prepare_flip_string(&info->port, &cbuf, ToRecv);
399 if (space < ToRecv) {
400 #ifdef ROCKET_DEBUG_RECEIVE
401 printk(KERN_INFO "rp_do_receive:insufficient space ToRecv=%d space=%d\n", ToRecv, space);
409 sInStrW(sGetTxRxDataIO(cp), (unsigned short *) cbuf, wRecv);
411 cbuf[ToRecv - 1] = sInB(sGetTxRxDataIO(cp));
413 /* Push the data up to the tty layer */
414 tty_flip_buffer_push(&info->port);
418 * Serial port transmit data function. Called from the timer polling loop as a
419 * result of a bit set in xmit_flags[], indicating data (from the tty layer) is ready
420 * to be sent out the serial port. Data is buffered in rp_table[line].xmit_buf, it is
421 * moved to the port's xmit FIFO. *info is critical data, protected by spinlocks.
423 static void rp_do_transmit(struct r_port *info)
426 CHANNEL_t *cp = &info->channel;
427 struct tty_struct *tty;
430 #ifdef ROCKET_DEBUG_INTR
431 printk(KERN_DEBUG "%s\n", __func__);
435 tty = tty_port_tty_get(&info->port);
438 printk(KERN_WARNING "rp: WARNING %s called with tty==NULL\n", __func__);
439 clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
443 spin_lock_irqsave(&info->slock, flags);
444 info->xmit_fifo_room = TXFIFO_SIZE - sGetTxCnt(cp);
446 /* Loop sending data to FIFO until done or FIFO full */
450 c = min(info->xmit_fifo_room, info->xmit_cnt);
451 c = min(c, XMIT_BUF_SIZE - info->xmit_tail);
452 if (c <= 0 || info->xmit_fifo_room <= 0)
454 sOutStrW(sGetTxRxDataIO(cp), (unsigned short *) (info->xmit_buf + info->xmit_tail), c / 2);
456 sOutB(sGetTxRxDataIO(cp), info->xmit_buf[info->xmit_tail + c - 1]);
457 info->xmit_tail += c;
458 info->xmit_tail &= XMIT_BUF_SIZE - 1;
460 info->xmit_fifo_room -= c;
461 #ifdef ROCKET_DEBUG_INTR
462 printk(KERN_INFO "tx %d chars...\n", c);
466 if (info->xmit_cnt == 0)
467 clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
469 if (info->xmit_cnt < WAKEUP_CHARS) {
471 #ifdef ROCKETPORT_HAVE_POLL_WAIT
472 wake_up_interruptible(&tty->poll_wait);
476 spin_unlock_irqrestore(&info->slock, flags);
479 #ifdef ROCKET_DEBUG_INTR
480 printk(KERN_DEBUG "(%d,%d,%d,%d)...\n", info->xmit_cnt, info->xmit_head,
481 info->xmit_tail, info->xmit_fifo_room);
486 * Called when a serial port signals it has read data in it's RX FIFO.
487 * It checks what interrupts are pending and services them, including
488 * receiving serial data.
490 static void rp_handle_port(struct r_port *info)
493 unsigned int IntMask, ChanStatus;
498 if (!tty_port_initialized(&info->port)) {
499 printk(KERN_WARNING "rp: WARNING: rp_handle_port called with "
500 "info->flags & NOT_INIT\n");
506 IntMask = sGetChanIntID(cp) & info->intmask;
507 #ifdef ROCKET_DEBUG_INTR
508 printk(KERN_INFO "rp_interrupt %02x...\n", IntMask);
510 ChanStatus = sGetChanStatus(cp);
511 if (IntMask & RXF_TRIG) { /* Rx FIFO trigger level */
512 rp_do_receive(info, cp, ChanStatus);
514 if (IntMask & DELTA_CD) { /* CD change */
515 #if (defined(ROCKET_DEBUG_OPEN) || defined(ROCKET_DEBUG_INTR) || defined(ROCKET_DEBUG_HANGUP))
516 printk(KERN_INFO "ttyR%d CD now %s...\n", info->line,
517 (ChanStatus & CD_ACT) ? "on" : "off");
519 if (!(ChanStatus & CD_ACT) && info->cd_status) {
520 #ifdef ROCKET_DEBUG_HANGUP
521 printk(KERN_INFO "CD drop, calling hangup.\n");
523 tty_port_tty_hangup(&info->port, false);
525 info->cd_status = (ChanStatus & CD_ACT) ? 1 : 0;
526 wake_up_interruptible(&info->port.open_wait);
528 #ifdef ROCKET_DEBUG_INTR
529 if (IntMask & DELTA_CTS) { /* CTS change */
530 printk(KERN_INFO "CTS change...\n");
532 if (IntMask & DELTA_DSR) { /* DSR change */
533 printk(KERN_INFO "DSR change...\n");
539 * The top level polling routine. Repeats every 1/100 HZ (10ms).
541 static void rp_do_poll(unsigned long dummy)
544 int ctrl, aiop, ch, line;
545 unsigned int xmitmask, i;
546 unsigned int CtlMask;
547 unsigned char AiopMask;
550 /* Walk through all the boards (ctrl's) */
551 for (ctrl = 0; ctrl < max_board; ctrl++) {
552 if (rcktpt_io_addr[ctrl] <= 0)
555 /* Get a ptr to the board's control struct */
556 ctlp = sCtlNumToCtlPtr(ctrl);
558 /* Get the interrupt status from the board */
560 if (ctlp->BusType == isPCI)
561 CtlMask = sPCIGetControllerIntStatus(ctlp);
564 CtlMask = sGetControllerIntStatus(ctlp);
566 /* Check if any AIOP read bits are set */
567 for (aiop = 0; CtlMask; aiop++) {
568 bit = ctlp->AiopIntrBits[aiop];
571 AiopMask = sGetAiopIntStatus(ctlp, aiop);
573 /* Check if any port read bits are set */
574 for (ch = 0; AiopMask; AiopMask >>= 1, ch++) {
577 /* Get the line number (/dev/ttyRx number). */
578 /* Read the data from the port. */
579 line = GetLineNumber(ctrl, aiop, ch);
580 rp_handle_port(rp_table[line]);
586 xmitmask = xmit_flags[ctrl];
589 * xmit_flags contains bit-significant flags, indicating there is data
590 * to xmit on the port. Bit 0 is port 0 on this board, bit 1 is port
591 * 1, ... (32 total possible). The variable i has the aiop and ch
592 * numbers encoded in it (port 0-7 are aiop0, 8-15 are aiop1, etc).
595 for (i = 0; i < rocketModel[ctrl].numPorts; i++) {
596 if (xmitmask & (1 << i)) {
597 aiop = (i & 0x18) >> 3;
599 line = GetLineNumber(ctrl, aiop, ch);
600 rp_do_transmit(rp_table[line]);
607 * Reset the timer so we get called at the next clock tick (10ms).
609 if (atomic_read(&rp_num_ports_open))
610 mod_timer(&rocket_timer, jiffies + POLL_PERIOD);
614 * Initializes the r_port structure for a port, as well as enabling the port on
616 * Inputs: board, aiop, chan numbers
619 init_r_port(int board, int aiop, int chan, struct pci_dev *pci_dev)
626 /* Get the next available line number */
627 line = SetLineNumber(board, aiop, chan);
629 ctlp = sCtlNumToCtlPtr(board);
631 /* Get a r_port struct for the port, fill it in and save it globally, indexed by line number */
632 info = kzalloc(sizeof (struct r_port), GFP_KERNEL);
634 printk(KERN_ERR "Couldn't allocate info struct for line #%d\n",
639 info->magic = RPORT_MAGIC;
645 tty_port_init(&info->port);
646 info->port.ops = &rocket_port_ops;
647 info->flags &= ~ROCKET_MODE_MASK;
648 if (board < ARRAY_SIZE(pc104) && line < ARRAY_SIZE(pc104_1))
649 switch (pc104[board][line]) {
651 info->flags |= ROCKET_MODE_RS422;
654 info->flags |= ROCKET_MODE_RS485;
658 info->flags |= ROCKET_MODE_RS232;
662 info->flags |= ROCKET_MODE_RS232;
664 info->intmask = RXF_TRIG | TXFIFO_MT | SRC_INT | DELTA_CD | DELTA_CTS | DELTA_DSR;
665 if (sInitChan(ctlp, &info->channel, aiop, chan) == 0) {
666 printk(KERN_ERR "RocketPort sInitChan(%d, %d, %d) failed!\n",
668 tty_port_destroy(&info->port);
673 rocketMode = info->flags & ROCKET_MODE_MASK;
675 if ((info->flags & ROCKET_RTS_TOGGLE) || (rocketMode == ROCKET_MODE_RS485))
676 sEnRTSToggle(&info->channel);
678 sDisRTSToggle(&info->channel);
680 if (ctlp->boardType == ROCKET_TYPE_PC104) {
681 switch (rocketMode) {
682 case ROCKET_MODE_RS485:
683 sSetInterfaceMode(&info->channel, InterfaceModeRS485);
685 case ROCKET_MODE_RS422:
686 sSetInterfaceMode(&info->channel, InterfaceModeRS422);
688 case ROCKET_MODE_RS232:
690 if (info->flags & ROCKET_RTS_TOGGLE)
691 sSetInterfaceMode(&info->channel, InterfaceModeRS232T);
693 sSetInterfaceMode(&info->channel, InterfaceModeRS232);
697 spin_lock_init(&info->slock);
698 mutex_init(&info->write_mtx);
699 rp_table[line] = info;
700 tty_port_register_device(&info->port, rocket_driver, line,
701 pci_dev ? &pci_dev->dev : NULL);
705 * Configures a rocketport port according to its termio settings. Called from
706 * user mode into the driver (exception handler). *info CD manipulation is spinlock protected.
708 static void configure_r_port(struct tty_struct *tty, struct r_port *info,
709 struct ktermios *old_termios)
714 int bits, baud, divisor;
716 struct ktermios *t = &tty->termios;
721 /* Byte size and parity */
722 if ((cflag & CSIZE) == CS8) {
729 if (cflag & CSTOPB) {
736 if (cflag & PARENB) {
739 if (cflag & PARODD) {
749 baud = tty_get_baud_rate(tty);
752 divisor = ((rp_baud_base[info->board] + (baud >> 1)) / baud) - 1;
753 if ((divisor >= 8192 || divisor < 0) && old_termios) {
754 baud = tty_termios_baud_rate(old_termios);
757 divisor = (rp_baud_base[info->board] / baud) - 1;
759 if (divisor >= 8192 || divisor < 0) {
761 divisor = (rp_baud_base[info->board] / baud) - 1;
763 info->cps = baud / bits;
764 sSetBaud(cp, divisor);
766 /* FIXME: Should really back compute a baud rate from the divisor */
767 tty_encode_baud_rate(tty, baud, baud);
769 if (cflag & CRTSCTS) {
770 info->intmask |= DELTA_CTS;
773 info->intmask &= ~DELTA_CTS;
776 if (cflag & CLOCAL) {
777 info->intmask &= ~DELTA_CD;
779 spin_lock_irqsave(&info->slock, flags);
780 if (sGetChanStatus(cp) & CD_ACT)
784 info->intmask |= DELTA_CD;
785 spin_unlock_irqrestore(&info->slock, flags);
789 * Handle software flow control in the board
791 #ifdef ROCKET_SOFT_FLOW
793 sEnTxSoftFlowCtl(cp);
799 sSetTxXONChar(cp, START_CHAR(tty));
800 sSetTxXOFFChar(cp, STOP_CHAR(tty));
802 sDisTxSoftFlowCtl(cp);
809 * Set up ignore/read mask words
811 info->read_status_mask = STMRCVROVRH | 0xFF;
813 info->read_status_mask |= STMFRAMEH | STMPARITYH;
814 if (I_BRKINT(tty) || I_PARMRK(tty))
815 info->read_status_mask |= STMBREAKH;
818 * Characters to ignore
820 info->ignore_status_mask = 0;
822 info->ignore_status_mask |= STMFRAMEH | STMPARITYH;
824 info->ignore_status_mask |= STMBREAKH;
826 * If we're ignoring parity and break indicators,
827 * ignore overruns too. (For real raw support).
830 info->ignore_status_mask |= STMRCVROVRH;
833 rocketMode = info->flags & ROCKET_MODE_MASK;
835 if ((info->flags & ROCKET_RTS_TOGGLE)
836 || (rocketMode == ROCKET_MODE_RS485))
841 sSetRTS(&info->channel);
843 if (cp->CtlP->boardType == ROCKET_TYPE_PC104) {
844 switch (rocketMode) {
845 case ROCKET_MODE_RS485:
846 sSetInterfaceMode(cp, InterfaceModeRS485);
848 case ROCKET_MODE_RS422:
849 sSetInterfaceMode(cp, InterfaceModeRS422);
851 case ROCKET_MODE_RS232:
853 if (info->flags & ROCKET_RTS_TOGGLE)
854 sSetInterfaceMode(cp, InterfaceModeRS232T);
856 sSetInterfaceMode(cp, InterfaceModeRS232);
862 static int carrier_raised(struct tty_port *port)
864 struct r_port *info = container_of(port, struct r_port, port);
865 return (sGetChanStatusLo(&info->channel) & CD_ACT) ? 1 : 0;
868 static void dtr_rts(struct tty_port *port, int on)
870 struct r_port *info = container_of(port, struct r_port, port);
872 sSetDTR(&info->channel);
873 sSetRTS(&info->channel);
875 sClrDTR(&info->channel);
876 sClrRTS(&info->channel);
881 * Exception handler that opens a serial port. Creates xmit_buf storage, fills in
882 * port's r_port struct. Initializes the port hardware.
884 static int rp_open(struct tty_struct *tty, struct file *filp)
887 struct tty_port *port;
892 info = rp_table[tty->index];
897 page = __get_free_page(GFP_KERNEL);
902 * We must not sleep from here until the port is marked fully in use.
907 info->xmit_buf = (unsigned char *) page;
909 tty->driver_data = info;
910 tty_port_tty_set(port, tty);
912 if (port->count++ == 0) {
913 atomic_inc(&rp_num_ports_open);
915 #ifdef ROCKET_DEBUG_OPEN
916 printk(KERN_INFO "rocket mod++ = %d...\n",
917 atomic_read(&rp_num_ports_open));
920 #ifdef ROCKET_DEBUG_OPEN
921 printk(KERN_INFO "rp_open ttyR%d, count=%d\n", info->line, info->port.count);
925 * Info->count is now 1; so it's safe to sleep now.
927 if (!tty_port_initialized(port)) {
929 sSetRxTrigger(cp, TRIG_1);
930 if (sGetChanStatus(cp) & CD_ACT)
934 sDisRxStatusMode(cp);
938 sEnInterrupts(cp, (TXINT_EN | MCINT_EN | RXINT_EN | SRCINT_EN | CHANINT_EN));
939 sSetRxTrigger(cp, TRIG_1);
942 sDisRxStatusMode(cp);
946 sDisTxSoftFlowCtl(cp);
951 tty_port_set_initialized(&info->port, 1);
954 * Set up the tty->alt_speed kludge
956 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_HI)
957 tty->alt_speed = 57600;
958 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_VHI)
959 tty->alt_speed = 115200;
960 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_SHI)
961 tty->alt_speed = 230400;
962 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_WARP)
963 tty->alt_speed = 460800;
965 configure_r_port(tty, info, NULL);
971 /* Starts (or resets) the maint polling loop */
972 mod_timer(&rocket_timer, jiffies + POLL_PERIOD);
974 retval = tty_port_block_til_ready(port, tty, filp);
976 #ifdef ROCKET_DEBUG_OPEN
977 printk(KERN_INFO "rp_open returning after block_til_ready with %d\n", retval);
985 * Exception handler that closes a serial port. info->port.count is considered critical.
987 static void rp_close(struct tty_struct *tty, struct file *filp)
989 struct r_port *info = tty->driver_data;
990 struct tty_port *port = &info->port;
994 if (rocket_paranoia_check(info, "rp_close"))
997 #ifdef ROCKET_DEBUG_OPEN
998 printk(KERN_INFO "rp_close ttyR%d, count = %d\n", info->line, info->port.count);
1001 if (tty_port_close_start(port, tty, filp) == 0)
1004 mutex_lock(&port->mutex);
1005 cp = &info->channel;
1007 * Before we drop DTR, make sure the UART transmitter
1008 * has completely drained; this is especially
1009 * important if there is a transmit FIFO!
1011 timeout = (sGetTxCnt(cp) + 1) * HZ / info->cps;
1014 rp_wait_until_sent(tty, timeout);
1015 clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
1018 sDisInterrupts(cp, (TXINT_EN | MCINT_EN | RXINT_EN | SRCINT_EN | CHANINT_EN));
1020 sDisTxSoftFlowCtl(cp);
1028 rp_flush_buffer(tty);
1030 tty_ldisc_flush(tty);
1032 clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
1034 /* We can't yet use tty_port_close_end as the buffer handling in this
1035 driver is a bit different to the usual */
1037 if (port->blocked_open) {
1038 if (port->close_delay) {
1039 msleep_interruptible(jiffies_to_msecs(port->close_delay));
1041 wake_up_interruptible(&port->open_wait);
1043 if (info->xmit_buf) {
1044 free_page((unsigned long) info->xmit_buf);
1045 info->xmit_buf = NULL;
1048 spin_lock_irq(&port->lock);
1050 spin_unlock_irq(&port->lock);
1051 tty_port_set_initialized(port, 0);
1052 tty_port_set_active(port, 0);
1053 mutex_unlock(&port->mutex);
1054 tty_port_tty_set(port, NULL);
1056 atomic_dec(&rp_num_ports_open);
1058 #ifdef ROCKET_DEBUG_OPEN
1059 printk(KERN_INFO "rocket mod-- = %d...\n",
1060 atomic_read(&rp_num_ports_open));
1061 printk(KERN_INFO "rp_close ttyR%d complete shutdown\n", info->line);
1066 static void rp_set_termios(struct tty_struct *tty,
1067 struct ktermios *old_termios)
1069 struct r_port *info = tty->driver_data;
1073 if (rocket_paranoia_check(info, "rp_set_termios"))
1076 cflag = tty->termios.c_cflag;
1079 * This driver doesn't support CS5 or CS6
1081 if (((cflag & CSIZE) == CS5) || ((cflag & CSIZE) == CS6))
1082 tty->termios.c_cflag =
1083 ((cflag & ~CSIZE) | (old_termios->c_cflag & CSIZE));
1085 tty->termios.c_cflag &= ~CMSPAR;
1087 configure_r_port(tty, info, old_termios);
1089 cp = &info->channel;
1091 /* Handle transition to B0 status */
1092 if ((old_termios->c_cflag & CBAUD) && !C_BAUD(tty)) {
1097 /* Handle transition away from B0 status */
1098 if (!(old_termios->c_cflag & CBAUD) && C_BAUD(tty)) {
1103 if ((old_termios->c_cflag & CRTSCTS) && !C_CRTSCTS(tty))
1107 static int rp_break(struct tty_struct *tty, int break_state)
1109 struct r_port *info = tty->driver_data;
1110 unsigned long flags;
1112 if (rocket_paranoia_check(info, "rp_break"))
1115 spin_lock_irqsave(&info->slock, flags);
1116 if (break_state == -1)
1117 sSendBreak(&info->channel);
1119 sClrBreak(&info->channel);
1120 spin_unlock_irqrestore(&info->slock, flags);
1125 * sGetChanRI used to be a macro in rocket_int.h. When the functionality for
1126 * the UPCI boards was added, it was decided to make this a function because
1127 * the macro was getting too complicated. All cases except the first one
1128 * (UPCIRingInd) are taken directly from the original macro.
1130 static int sGetChanRI(CHANNEL_T * ChP)
1132 CONTROLLER_t *CtlP = ChP->CtlP;
1133 int ChanNum = ChP->ChanNum;
1136 if (CtlP->UPCIRingInd)
1137 RingInd = !(sInB(CtlP->UPCIRingInd) & sBitMapSetTbl[ChanNum]);
1138 else if (CtlP->AltChanRingIndicator)
1139 RingInd = sInB((ByteIO_t) (ChP->ChanStat + 8)) & DSR_ACT;
1140 else if (CtlP->boardType == ROCKET_TYPE_PC104)
1141 RingInd = !(sInB(CtlP->AiopIO[3]) & sBitMapSetTbl[ChanNum]);
1146 /********************************************************************************************/
1147 /* Here are the routines used by rp_ioctl. These are all called from exception handlers. */
1150 * Returns the state of the serial modem control lines. These next 2 functions
1151 * are the way kernel versions > 2.5 handle modem control lines rather than IOCTLs.
1153 static int rp_tiocmget(struct tty_struct *tty)
1155 struct r_port *info = tty->driver_data;
1156 unsigned int control, result, ChanStatus;
1158 ChanStatus = sGetChanStatusLo(&info->channel);
1159 control = info->channel.TxControl[3];
1160 result = ((control & SET_RTS) ? TIOCM_RTS : 0) |
1161 ((control & SET_DTR) ? TIOCM_DTR : 0) |
1162 ((ChanStatus & CD_ACT) ? TIOCM_CAR : 0) |
1163 (sGetChanRI(&info->channel) ? TIOCM_RNG : 0) |
1164 ((ChanStatus & DSR_ACT) ? TIOCM_DSR : 0) |
1165 ((ChanStatus & CTS_ACT) ? TIOCM_CTS : 0);
1171 * Sets the modem control lines
1173 static int rp_tiocmset(struct tty_struct *tty,
1174 unsigned int set, unsigned int clear)
1176 struct r_port *info = tty->driver_data;
1178 if (set & TIOCM_RTS)
1179 info->channel.TxControl[3] |= SET_RTS;
1180 if (set & TIOCM_DTR)
1181 info->channel.TxControl[3] |= SET_DTR;
1182 if (clear & TIOCM_RTS)
1183 info->channel.TxControl[3] &= ~SET_RTS;
1184 if (clear & TIOCM_DTR)
1185 info->channel.TxControl[3] &= ~SET_DTR;
1187 out32(info->channel.IndexAddr, info->channel.TxControl);
1191 static int get_config(struct r_port *info, struct rocket_config __user *retinfo)
1193 struct rocket_config tmp;
1197 memset(&tmp, 0, sizeof (tmp));
1198 mutex_lock(&info->port.mutex);
1199 tmp.line = info->line;
1200 tmp.flags = info->flags;
1201 tmp.close_delay = info->port.close_delay;
1202 tmp.closing_wait = info->port.closing_wait;
1203 tmp.port = rcktpt_io_addr[(info->line >> 5) & 3];
1204 mutex_unlock(&info->port.mutex);
1206 if (copy_to_user(retinfo, &tmp, sizeof (*retinfo)))
1211 static int set_config(struct tty_struct *tty, struct r_port *info,
1212 struct rocket_config __user *new_info)
1214 struct rocket_config new_serial;
1216 if (copy_from_user(&new_serial, new_info, sizeof (new_serial)))
1219 mutex_lock(&info->port.mutex);
1220 if (!capable(CAP_SYS_ADMIN))
1222 if ((new_serial.flags & ~ROCKET_USR_MASK) != (info->flags & ~ROCKET_USR_MASK)) {
1223 mutex_unlock(&info->port.mutex);
1226 info->flags = ((info->flags & ~ROCKET_USR_MASK) | (new_serial.flags & ROCKET_USR_MASK));
1227 configure_r_port(tty, info, NULL);
1228 mutex_unlock(&info->port.mutex);
1232 info->flags = ((info->flags & ~ROCKET_FLAGS) | (new_serial.flags & ROCKET_FLAGS));
1233 info->port.close_delay = new_serial.close_delay;
1234 info->port.closing_wait = new_serial.closing_wait;
1236 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_HI)
1237 tty->alt_speed = 57600;
1238 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_VHI)
1239 tty->alt_speed = 115200;
1240 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_SHI)
1241 tty->alt_speed = 230400;
1242 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_WARP)
1243 tty->alt_speed = 460800;
1244 mutex_unlock(&info->port.mutex);
1246 configure_r_port(tty, info, NULL);
1251 * This function fills in a rocket_ports struct with information
1252 * about what boards/ports are in the system. This info is passed
1253 * to user space. See setrocket.c where the info is used to create
1254 * the /dev/ttyRx ports.
1256 static int get_ports(struct r_port *info, struct rocket_ports __user *retports)
1258 struct rocket_ports tmp;
1263 memset(&tmp, 0, sizeof (tmp));
1264 tmp.tty_major = rocket_driver->major;
1266 for (board = 0; board < 4; board++) {
1267 tmp.rocketModel[board].model = rocketModel[board].model;
1268 strcpy(tmp.rocketModel[board].modelString, rocketModel[board].modelString);
1269 tmp.rocketModel[board].numPorts = rocketModel[board].numPorts;
1270 tmp.rocketModel[board].loadrm2 = rocketModel[board].loadrm2;
1271 tmp.rocketModel[board].startingPortNumber = rocketModel[board].startingPortNumber;
1273 if (copy_to_user(retports, &tmp, sizeof (*retports)))
1278 static int reset_rm2(struct r_port *info, void __user *arg)
1282 if (!capable(CAP_SYS_ADMIN))
1285 if (copy_from_user(&reset, arg, sizeof (int)))
1290 if (rcktpt_type[info->board] != ROCKET_TYPE_MODEMII &&
1291 rcktpt_type[info->board] != ROCKET_TYPE_MODEMIII)
1294 if (info->ctlp->BusType == isISA)
1295 sModemReset(info->ctlp, info->chan, reset);
1297 sPCIModemReset(info->ctlp, info->chan, reset);
1302 static int get_version(struct r_port *info, struct rocket_version __user *retvers)
1304 if (copy_to_user(retvers, &driver_version, sizeof (*retvers)))
1309 /* IOCTL call handler into the driver */
1310 static int rp_ioctl(struct tty_struct *tty,
1311 unsigned int cmd, unsigned long arg)
1313 struct r_port *info = tty->driver_data;
1314 void __user *argp = (void __user *)arg;
1317 if (cmd != RCKP_GET_PORTS && rocket_paranoia_check(info, "rp_ioctl"))
1321 case RCKP_GET_STRUCT:
1322 if (copy_to_user(argp, info, sizeof (struct r_port)))
1325 case RCKP_GET_CONFIG:
1326 ret = get_config(info, argp);
1328 case RCKP_SET_CONFIG:
1329 ret = set_config(tty, info, argp);
1331 case RCKP_GET_PORTS:
1332 ret = get_ports(info, argp);
1334 case RCKP_RESET_RM2:
1335 ret = reset_rm2(info, argp);
1337 case RCKP_GET_VERSION:
1338 ret = get_version(info, argp);
1346 static void rp_send_xchar(struct tty_struct *tty, char ch)
1348 struct r_port *info = tty->driver_data;
1351 if (rocket_paranoia_check(info, "rp_send_xchar"))
1354 cp = &info->channel;
1356 sWriteTxPrioByte(cp, ch);
1358 sWriteTxByte(sGetTxRxDataIO(cp), ch);
1361 static void rp_throttle(struct tty_struct *tty)
1363 struct r_port *info = tty->driver_data;
1365 #ifdef ROCKET_DEBUG_THROTTLE
1366 printk(KERN_INFO "throttle %s ....\n", tty->name);
1369 if (rocket_paranoia_check(info, "rp_throttle"))
1373 rp_send_xchar(tty, STOP_CHAR(tty));
1375 sClrRTS(&info->channel);
1378 static void rp_unthrottle(struct tty_struct *tty)
1380 struct r_port *info = tty->driver_data;
1381 #ifdef ROCKET_DEBUG_THROTTLE
1382 printk(KERN_INFO "unthrottle %s ....\n", tty->name);
1385 if (rocket_paranoia_check(info, "rp_unthrottle"))
1389 rp_send_xchar(tty, START_CHAR(tty));
1391 sSetRTS(&info->channel);
1395 * ------------------------------------------------------------
1396 * rp_stop() and rp_start()
1398 * This routines are called before setting or resetting tty->stopped.
1399 * They enable or disable transmitter interrupts, as necessary.
1400 * ------------------------------------------------------------
1402 static void rp_stop(struct tty_struct *tty)
1404 struct r_port *info = tty->driver_data;
1406 #ifdef ROCKET_DEBUG_FLOW
1407 printk(KERN_INFO "stop %s: %d %d....\n", tty->name,
1408 info->xmit_cnt, info->xmit_fifo_room);
1411 if (rocket_paranoia_check(info, "rp_stop"))
1414 if (sGetTxCnt(&info->channel))
1415 sDisTransmit(&info->channel);
1418 static void rp_start(struct tty_struct *tty)
1420 struct r_port *info = tty->driver_data;
1422 #ifdef ROCKET_DEBUG_FLOW
1423 printk(KERN_INFO "start %s: %d %d....\n", tty->name,
1424 info->xmit_cnt, info->xmit_fifo_room);
1427 if (rocket_paranoia_check(info, "rp_stop"))
1430 sEnTransmit(&info->channel);
1431 set_bit((info->aiop * 8) + info->chan,
1432 (void *) &xmit_flags[info->board]);
1436 * rp_wait_until_sent() --- wait until the transmitter is empty
1438 static void rp_wait_until_sent(struct tty_struct *tty, int timeout)
1440 struct r_port *info = tty->driver_data;
1442 unsigned long orig_jiffies;
1443 int check_time, exit_time;
1446 if (rocket_paranoia_check(info, "rp_wait_until_sent"))
1449 cp = &info->channel;
1451 orig_jiffies = jiffies;
1452 #ifdef ROCKET_DEBUG_WAIT_UNTIL_SENT
1453 printk(KERN_INFO "In %s(%d) (jiff=%lu)...\n", __func__, timeout,
1455 printk(KERN_INFO "cps=%d...\n", info->cps);
1458 txcnt = sGetTxCnt(cp);
1460 if (sGetChanStatusLo(cp) & TXSHRMT)
1462 check_time = (HZ / info->cps) / 5;
1464 check_time = HZ * txcnt / info->cps;
1467 exit_time = orig_jiffies + timeout - jiffies;
1470 if (exit_time < check_time)
1471 check_time = exit_time;
1473 if (check_time == 0)
1475 #ifdef ROCKET_DEBUG_WAIT_UNTIL_SENT
1476 printk(KERN_INFO "txcnt = %d (jiff=%lu,check=%d)...\n", txcnt,
1477 jiffies, check_time);
1479 msleep_interruptible(jiffies_to_msecs(check_time));
1480 if (signal_pending(current))
1483 __set_current_state(TASK_RUNNING);
1484 #ifdef ROCKET_DEBUG_WAIT_UNTIL_SENT
1485 printk(KERN_INFO "txcnt = %d (jiff=%lu)...done\n", txcnt, jiffies);
1490 * rp_hangup() --- called by tty_hangup() when a hangup is signaled.
1492 static void rp_hangup(struct tty_struct *tty)
1495 struct r_port *info = tty->driver_data;
1496 unsigned long flags;
1498 if (rocket_paranoia_check(info, "rp_hangup"))
1501 #if (defined(ROCKET_DEBUG_OPEN) || defined(ROCKET_DEBUG_HANGUP))
1502 printk(KERN_INFO "rp_hangup of ttyR%d...\n", info->line);
1504 rp_flush_buffer(tty);
1505 spin_lock_irqsave(&info->port.lock, flags);
1506 if (info->port.count)
1507 atomic_dec(&rp_num_ports_open);
1508 clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
1509 spin_unlock_irqrestore(&info->port.lock, flags);
1511 tty_port_hangup(&info->port);
1513 cp = &info->channel;
1516 sDisInterrupts(cp, (TXINT_EN | MCINT_EN | RXINT_EN | SRCINT_EN | CHANINT_EN));
1518 sDisTxSoftFlowCtl(cp);
1520 tty_port_set_initialized(&info->port, 0);
1522 wake_up_interruptible(&info->port.open_wait);
1526 * Exception handler - write char routine. The RocketPort driver uses a
1527 * double-buffering strategy, with the twist that if the in-memory CPU
1528 * buffer is empty, and there's space in the transmit FIFO, the
1529 * writing routines will write directly to transmit FIFO.
1530 * Write buffer and counters protected by spinlocks
1532 static int rp_put_char(struct tty_struct *tty, unsigned char ch)
1534 struct r_port *info = tty->driver_data;
1536 unsigned long flags;
1538 if (rocket_paranoia_check(info, "rp_put_char"))
1542 * Grab the port write mutex, locking out other processes that try to
1543 * write to this port
1545 mutex_lock(&info->write_mtx);
1547 #ifdef ROCKET_DEBUG_WRITE
1548 printk(KERN_INFO "rp_put_char %c...\n", ch);
1551 spin_lock_irqsave(&info->slock, flags);
1552 cp = &info->channel;
1554 if (!tty->stopped && info->xmit_fifo_room == 0)
1555 info->xmit_fifo_room = TXFIFO_SIZE - sGetTxCnt(cp);
1557 if (tty->stopped || info->xmit_fifo_room == 0 || info->xmit_cnt != 0) {
1558 info->xmit_buf[info->xmit_head++] = ch;
1559 info->xmit_head &= XMIT_BUF_SIZE - 1;
1561 set_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
1563 sOutB(sGetTxRxDataIO(cp), ch);
1564 info->xmit_fifo_room--;
1566 spin_unlock_irqrestore(&info->slock, flags);
1567 mutex_unlock(&info->write_mtx);
1572 * Exception handler - write routine, called when user app writes to the device.
1573 * A per port write mutex is used to protect from another process writing to
1574 * this port at the same time. This other process could be running on the other CPU
1575 * or get control of the CPU if the copy_from_user() blocks due to a page fault (swapped out).
1576 * Spinlocks protect the info xmit members.
1578 static int rp_write(struct tty_struct *tty,
1579 const unsigned char *buf, int count)
1581 struct r_port *info = tty->driver_data;
1583 const unsigned char *b;
1585 unsigned long flags;
1587 if (count <= 0 || rocket_paranoia_check(info, "rp_write"))
1590 if (mutex_lock_interruptible(&info->write_mtx))
1591 return -ERESTARTSYS;
1593 #ifdef ROCKET_DEBUG_WRITE
1594 printk(KERN_INFO "rp_write %d chars...\n", count);
1596 cp = &info->channel;
1598 if (!tty->stopped && info->xmit_fifo_room < count)
1599 info->xmit_fifo_room = TXFIFO_SIZE - sGetTxCnt(cp);
1602 * If the write queue for the port is empty, and there is FIFO space, stuff bytes
1603 * into FIFO. Use the write queue for temp storage.
1605 if (!tty->stopped && info->xmit_cnt == 0 && info->xmit_fifo_room > 0) {
1606 c = min(count, info->xmit_fifo_room);
1609 /* Push data into FIFO, 2 bytes at a time */
1610 sOutStrW(sGetTxRxDataIO(cp), (unsigned short *) b, c / 2);
1612 /* If there is a byte remaining, write it */
1614 sOutB(sGetTxRxDataIO(cp), b[c - 1]);
1620 spin_lock_irqsave(&info->slock, flags);
1621 info->xmit_fifo_room -= c;
1622 spin_unlock_irqrestore(&info->slock, flags);
1625 /* If count is zero, we wrote it all and are done */
1629 /* Write remaining data into the port's xmit_buf */
1632 if (!tty_port_active(&info->port))
1634 c = min(count, XMIT_BUF_SIZE - info->xmit_cnt - 1);
1635 c = min(c, XMIT_BUF_SIZE - info->xmit_head);
1640 memcpy(info->xmit_buf + info->xmit_head, b, c);
1642 spin_lock_irqsave(&info->slock, flags);
1644 (info->xmit_head + c) & (XMIT_BUF_SIZE - 1);
1645 info->xmit_cnt += c;
1646 spin_unlock_irqrestore(&info->slock, flags);
1653 if ((retval > 0) && !tty->stopped)
1654 set_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
1657 if (info->xmit_cnt < WAKEUP_CHARS) {
1659 #ifdef ROCKETPORT_HAVE_POLL_WAIT
1660 wake_up_interruptible(&tty->poll_wait);
1663 mutex_unlock(&info->write_mtx);
1668 * Return the number of characters that can be sent. We estimate
1669 * only using the in-memory transmit buffer only, and ignore the
1670 * potential space in the transmit FIFO.
1672 static int rp_write_room(struct tty_struct *tty)
1674 struct r_port *info = tty->driver_data;
1677 if (rocket_paranoia_check(info, "rp_write_room"))
1680 ret = XMIT_BUF_SIZE - info->xmit_cnt - 1;
1683 #ifdef ROCKET_DEBUG_WRITE
1684 printk(KERN_INFO "rp_write_room returns %d...\n", ret);
1690 * Return the number of characters in the buffer. Again, this only
1691 * counts those characters in the in-memory transmit buffer.
1693 static int rp_chars_in_buffer(struct tty_struct *tty)
1695 struct r_port *info = tty->driver_data;
1697 if (rocket_paranoia_check(info, "rp_chars_in_buffer"))
1700 #ifdef ROCKET_DEBUG_WRITE
1701 printk(KERN_INFO "rp_chars_in_buffer returns %d...\n", info->xmit_cnt);
1703 return info->xmit_cnt;
1707 * Flushes the TX fifo for a port, deletes data in the xmit_buf stored in the
1708 * r_port struct for the port. Note that spinlock are used to protect info members,
1709 * do not call this function if the spinlock is already held.
1711 static void rp_flush_buffer(struct tty_struct *tty)
1713 struct r_port *info = tty->driver_data;
1715 unsigned long flags;
1717 if (rocket_paranoia_check(info, "rp_flush_buffer"))
1720 spin_lock_irqsave(&info->slock, flags);
1721 info->xmit_cnt = info->xmit_head = info->xmit_tail = 0;
1722 spin_unlock_irqrestore(&info->slock, flags);
1724 #ifdef ROCKETPORT_HAVE_POLL_WAIT
1725 wake_up_interruptible(&tty->poll_wait);
1729 cp = &info->channel;
1735 static const struct pci_device_id rocket_pci_ids[] = {
1736 { PCI_DEVICE(PCI_VENDOR_ID_RP, PCI_DEVICE_ID_RP4QUAD) },
1737 { PCI_DEVICE(PCI_VENDOR_ID_RP, PCI_DEVICE_ID_RP8OCTA) },
1738 { PCI_DEVICE(PCI_VENDOR_ID_RP, PCI_DEVICE_ID_URP8OCTA) },
1739 { PCI_DEVICE(PCI_VENDOR_ID_RP, PCI_DEVICE_ID_RP8INTF) },
1740 { PCI_DEVICE(PCI_VENDOR_ID_RP, PCI_DEVICE_ID_URP8INTF) },
1741 { PCI_DEVICE(PCI_VENDOR_ID_RP, PCI_DEVICE_ID_RP8J) },
1742 { PCI_DEVICE(PCI_VENDOR_ID_RP, PCI_DEVICE_ID_RP4J) },
1743 { PCI_DEVICE(PCI_VENDOR_ID_RP, PCI_DEVICE_ID_RP8SNI) },
1744 { PCI_DEVICE(PCI_VENDOR_ID_RP, PCI_DEVICE_ID_RP16SNI) },
1745 { PCI_DEVICE(PCI_VENDOR_ID_RP, PCI_DEVICE_ID_RP16INTF) },
1746 { PCI_DEVICE(PCI_VENDOR_ID_RP, PCI_DEVICE_ID_URP16INTF) },
1747 { PCI_DEVICE(PCI_VENDOR_ID_RP, PCI_DEVICE_ID_CRP16INTF) },
1748 { PCI_DEVICE(PCI_VENDOR_ID_RP, PCI_DEVICE_ID_RP32INTF) },
1749 { PCI_DEVICE(PCI_VENDOR_ID_RP, PCI_DEVICE_ID_URP32INTF) },
1750 { PCI_DEVICE(PCI_VENDOR_ID_RP, PCI_DEVICE_ID_RPP4) },
1751 { PCI_DEVICE(PCI_VENDOR_ID_RP, PCI_DEVICE_ID_RPP8) },
1752 { PCI_DEVICE(PCI_VENDOR_ID_RP, PCI_DEVICE_ID_RP2_232) },
1753 { PCI_DEVICE(PCI_VENDOR_ID_RP, PCI_DEVICE_ID_RP2_422) },
1754 { PCI_DEVICE(PCI_VENDOR_ID_RP, PCI_DEVICE_ID_RP6M) },
1755 { PCI_DEVICE(PCI_VENDOR_ID_RP, PCI_DEVICE_ID_RP4M) },
1756 { PCI_DEVICE(PCI_VENDOR_ID_RP, PCI_DEVICE_ID_UPCI_RM3_8PORT) },
1757 { PCI_DEVICE(PCI_VENDOR_ID_RP, PCI_DEVICE_ID_UPCI_RM3_4PORT) },
1760 MODULE_DEVICE_TABLE(pci, rocket_pci_ids);
1762 /* Resets the speaker controller on RocketModem II and III devices */
1763 static void rmSpeakerReset(CONTROLLER_T * CtlP, unsigned long model)
1767 /* RocketModem II speaker control is at the 8th port location of offset 0x40 */
1768 if ((model == MODEL_RP4M) || (model == MODEL_RP6M)) {
1769 addr = CtlP->AiopIO[0] + 0x4F;
1773 /* RocketModem III speaker control is at the 1st port location of offset 0x80 */
1774 if ((model == MODEL_UPCI_RM3_8PORT)
1775 || (model == MODEL_UPCI_RM3_4PORT)) {
1776 addr = CtlP->AiopIO[0] + 0x88;
1781 /***************************************************************************
1782 Function: sPCIInitController
1783 Purpose: Initialization of controller global registers and controller
1785 Call: sPCIInitController(CtlP,CtlNum,AiopIOList,AiopIOListSize,
1786 IRQNum,Frequency,PeriodicOnly)
1787 CONTROLLER_T *CtlP; Ptr to controller structure
1788 int CtlNum; Controller number
1789 ByteIO_t *AiopIOList; List of I/O addresses for each AIOP.
1790 This list must be in the order the AIOPs will be found on the
1791 controller. Once an AIOP in the list is not found, it is
1792 assumed that there are no more AIOPs on the controller.
1793 int AiopIOListSize; Number of addresses in AiopIOList
1794 int IRQNum; Interrupt Request number. Can be any of the following:
1795 0: Disable global interrupts
1804 Byte_t Frequency: A flag identifying the frequency
1805 of the periodic interrupt, can be any one of the following:
1806 FREQ_DIS - periodic interrupt disabled
1807 FREQ_137HZ - 137 Hertz
1808 FREQ_69HZ - 69 Hertz
1809 FREQ_34HZ - 34 Hertz
1810 FREQ_17HZ - 17 Hertz
1813 If IRQNum is set to 0 the Frequency parameter is
1814 overidden, it is forced to a value of FREQ_DIS.
1815 int PeriodicOnly: 1 if all interrupts except the periodic
1816 interrupt are to be blocked.
1817 0 is both the periodic interrupt and
1818 other channel interrupts are allowed.
1819 If IRQNum is set to 0 the PeriodicOnly parameter is
1820 overidden, it is forced to a value of 0.
1821 Return: int: Number of AIOPs on the controller, or CTLID_NULL if controller
1822 initialization failed.
1825 If periodic interrupts are to be disabled but AIOP interrupts
1826 are allowed, set Frequency to FREQ_DIS and PeriodicOnly to 0.
1828 If interrupts are to be completely disabled set IRQNum to 0.
1830 Setting Frequency to FREQ_DIS and PeriodicOnly to 1 is an
1831 invalid combination.
1833 This function performs initialization of global interrupt modes,
1834 but it does not actually enable global interrupts. To enable
1835 and disable global interrupts use functions sEnGlobalInt() and
1836 sDisGlobalInt(). Enabling of global interrupts is normally not
1837 done until all other initializations are complete.
1839 Even if interrupts are globally enabled, they must also be
1840 individually enabled for each channel that is to generate
1843 Warnings: No range checking on any of the parameters is done.
1845 No context switches are allowed while executing this function.
1847 After this function all AIOPs on the controller are disabled,
1848 they can be enabled with sEnAiop().
1850 static int sPCIInitController(CONTROLLER_T * CtlP, int CtlNum,
1851 ByteIO_t * AiopIOList, int AiopIOListSize,
1852 WordIO_t ConfigIO, int IRQNum, Byte_t Frequency,
1853 int PeriodicOnly, int altChanRingIndicator,
1859 CtlP->AltChanRingIndicator = altChanRingIndicator;
1860 CtlP->UPCIRingInd = UPCIRingInd;
1861 CtlP->CtlNum = CtlNum;
1862 CtlP->CtlID = CTLID_0001; /* controller release 1 */
1863 CtlP->BusType = isPCI; /* controller release 1 */
1867 CtlP->PCIIO = ConfigIO + _PCI_9030_INT_CTRL;
1868 CtlP->PCIIO2 = ConfigIO + _PCI_9030_GPIO_CTRL;
1869 CtlP->AiopIntrBits = upci_aiop_intr_bits;
1873 (WordIO_t) ((ByteIO_t) AiopIOList[0] + _PCI_INT_FUNC);
1874 CtlP->AiopIntrBits = aiop_intr_bits;
1877 sPCIControllerEOI(CtlP); /* clear EOI if warm init */
1880 for (i = 0; i < AiopIOListSize; i++) {
1882 CtlP->AiopIO[i] = (WordIO_t) io;
1883 CtlP->AiopIntChanIO[i] = io + _INT_CHAN;
1885 CtlP->AiopID[i] = sReadAiopID(io); /* read AIOP ID */
1886 if (CtlP->AiopID[i] == AIOPID_NULL) /* if AIOP does not exist */
1887 break; /* done looking for AIOPs */
1889 CtlP->AiopNumChan[i] = sReadAiopNumChan((WordIO_t) io); /* num channels in AIOP */
1890 sOutW((WordIO_t) io + _INDX_ADDR, _CLK_PRE); /* clock prescaler */
1891 sOutB(io + _INDX_DATA, sClockPrescale);
1892 CtlP->NumAiop++; /* bump count of AIOPs */
1895 if (CtlP->NumAiop == 0)
1898 return (CtlP->NumAiop);
1902 * Called when a PCI card is found. Retrieves and stores model information,
1903 * init's aiopic and serial port hardware.
1904 * Inputs: i is the board number (0-n)
1906 static __init int register_PCI(int i, struct pci_dev *dev)
1908 int num_aiops, aiop, max_num_aiops, num_chan, chan;
1909 unsigned int aiopio[MAX_AIOPS_PER_BOARD];
1913 int altChanRingIndicator = 0;
1914 int ports_per_aiop = 8;
1915 WordIO_t ConfigIO = 0;
1916 ByteIO_t UPCIRingInd = 0;
1918 if (!dev || !pci_match_id(rocket_pci_ids, dev) ||
1919 pci_enable_device(dev) || i >= NUM_BOARDS)
1922 rcktpt_io_addr[i] = pci_resource_start(dev, 0);
1924 rcktpt_type[i] = ROCKET_TYPE_NORMAL;
1925 rocketModel[i].loadrm2 = 0;
1926 rocketModel[i].startingPortNumber = nextLineNumber;
1928 /* Depending on the model, set up some config variables */
1929 switch (dev->device) {
1930 case PCI_DEVICE_ID_RP4QUAD:
1933 rocketModel[i].model = MODEL_RP4QUAD;
1934 strcpy(rocketModel[i].modelString, "RocketPort 4 port w/quad cable");
1935 rocketModel[i].numPorts = 4;
1937 case PCI_DEVICE_ID_RP8OCTA:
1939 rocketModel[i].model = MODEL_RP8OCTA;
1940 strcpy(rocketModel[i].modelString, "RocketPort 8 port w/octa cable");
1941 rocketModel[i].numPorts = 8;
1943 case PCI_DEVICE_ID_URP8OCTA:
1945 rocketModel[i].model = MODEL_UPCI_RP8OCTA;
1946 strcpy(rocketModel[i].modelString, "RocketPort UPCI 8 port w/octa cable");
1947 rocketModel[i].numPorts = 8;
1949 case PCI_DEVICE_ID_RP8INTF:
1951 rocketModel[i].model = MODEL_RP8INTF;
1952 strcpy(rocketModel[i].modelString, "RocketPort 8 port w/external I/F");
1953 rocketModel[i].numPorts = 8;
1955 case PCI_DEVICE_ID_URP8INTF:
1957 rocketModel[i].model = MODEL_UPCI_RP8INTF;
1958 strcpy(rocketModel[i].modelString, "RocketPort UPCI 8 port w/external I/F");
1959 rocketModel[i].numPorts = 8;
1961 case PCI_DEVICE_ID_RP8J:
1963 rocketModel[i].model = MODEL_RP8J;
1964 strcpy(rocketModel[i].modelString, "RocketPort 8 port w/RJ11 connectors");
1965 rocketModel[i].numPorts = 8;
1967 case PCI_DEVICE_ID_RP4J:
1970 rocketModel[i].model = MODEL_RP4J;
1971 strcpy(rocketModel[i].modelString, "RocketPort 4 port w/RJ45 connectors");
1972 rocketModel[i].numPorts = 4;
1974 case PCI_DEVICE_ID_RP8SNI:
1976 rocketModel[i].model = MODEL_RP8SNI;
1977 strcpy(rocketModel[i].modelString, "RocketPort 8 port w/ custom DB78");
1978 rocketModel[i].numPorts = 8;
1980 case PCI_DEVICE_ID_RP16SNI:
1982 rocketModel[i].model = MODEL_RP16SNI;
1983 strcpy(rocketModel[i].modelString, "RocketPort 16 port w/ custom DB78");
1984 rocketModel[i].numPorts = 16;
1986 case PCI_DEVICE_ID_RP16INTF:
1988 rocketModel[i].model = MODEL_RP16INTF;
1989 strcpy(rocketModel[i].modelString, "RocketPort 16 port w/external I/F");
1990 rocketModel[i].numPorts = 16;
1992 case PCI_DEVICE_ID_URP16INTF:
1994 rocketModel[i].model = MODEL_UPCI_RP16INTF;
1995 strcpy(rocketModel[i].modelString, "RocketPort UPCI 16 port w/external I/F");
1996 rocketModel[i].numPorts = 16;
1998 case PCI_DEVICE_ID_CRP16INTF:
2000 rocketModel[i].model = MODEL_CPCI_RP16INTF;
2001 strcpy(rocketModel[i].modelString, "RocketPort Compact PCI 16 port w/external I/F");
2002 rocketModel[i].numPorts = 16;
2004 case PCI_DEVICE_ID_RP32INTF:
2006 rocketModel[i].model = MODEL_RP32INTF;
2007 strcpy(rocketModel[i].modelString, "RocketPort 32 port w/external I/F");
2008 rocketModel[i].numPorts = 32;
2010 case PCI_DEVICE_ID_URP32INTF:
2012 rocketModel[i].model = MODEL_UPCI_RP32INTF;
2013 strcpy(rocketModel[i].modelString, "RocketPort UPCI 32 port w/external I/F");
2014 rocketModel[i].numPorts = 32;
2016 case PCI_DEVICE_ID_RPP4:
2019 altChanRingIndicator++;
2021 rocketModel[i].model = MODEL_RPP4;
2022 strcpy(rocketModel[i].modelString, "RocketPort Plus 4 port");
2023 rocketModel[i].numPorts = 4;
2025 case PCI_DEVICE_ID_RPP8:
2028 altChanRingIndicator++;
2030 rocketModel[i].model = MODEL_RPP8;
2031 strcpy(rocketModel[i].modelString, "RocketPort Plus 8 port");
2032 rocketModel[i].numPorts = 8;
2034 case PCI_DEVICE_ID_RP2_232:
2037 altChanRingIndicator++;
2039 rocketModel[i].model = MODEL_RP2_232;
2040 strcpy(rocketModel[i].modelString, "RocketPort Plus 2 port RS232");
2041 rocketModel[i].numPorts = 2;
2043 case PCI_DEVICE_ID_RP2_422:
2046 altChanRingIndicator++;
2048 rocketModel[i].model = MODEL_RP2_422;
2049 strcpy(rocketModel[i].modelString, "RocketPort Plus 2 port RS422");
2050 rocketModel[i].numPorts = 2;
2052 case PCI_DEVICE_ID_RP6M:
2057 /* If revision is 1, the rocketmodem flash must be loaded.
2058 * If it is 2 it is a "socketed" version. */
2059 if (dev->revision == 1) {
2060 rcktpt_type[i] = ROCKET_TYPE_MODEMII;
2061 rocketModel[i].loadrm2 = 1;
2063 rcktpt_type[i] = ROCKET_TYPE_MODEM;
2066 rocketModel[i].model = MODEL_RP6M;
2067 strcpy(rocketModel[i].modelString, "RocketModem 6 port");
2068 rocketModel[i].numPorts = 6;
2070 case PCI_DEVICE_ID_RP4M:
2073 if (dev->revision == 1) {
2074 rcktpt_type[i] = ROCKET_TYPE_MODEMII;
2075 rocketModel[i].loadrm2 = 1;
2077 rcktpt_type[i] = ROCKET_TYPE_MODEM;
2080 rocketModel[i].model = MODEL_RP4M;
2081 strcpy(rocketModel[i].modelString, "RocketModem 4 port");
2082 rocketModel[i].numPorts = 4;
2090 * Check for UPCI boards.
2093 switch (dev->device) {
2094 case PCI_DEVICE_ID_URP32INTF:
2095 case PCI_DEVICE_ID_URP8INTF:
2096 case PCI_DEVICE_ID_URP16INTF:
2097 case PCI_DEVICE_ID_CRP16INTF:
2098 case PCI_DEVICE_ID_URP8OCTA:
2099 rcktpt_io_addr[i] = pci_resource_start(dev, 2);
2100 ConfigIO = pci_resource_start(dev, 1);
2101 if (dev->device == PCI_DEVICE_ID_URP8OCTA) {
2102 UPCIRingInd = rcktpt_io_addr[i] + _PCI_9030_RING_IND;
2105 * Check for octa or quad cable.
2108 (sInW(ConfigIO + _PCI_9030_GPIO_CTRL) &
2109 PCI_GPIO_CTRL_8PORT)) {
2111 rocketModel[i].numPorts = 4;
2115 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:
2127 rocketModel[i].model = MODEL_UPCI_RM3_4PORT;
2128 strcpy(rocketModel[i].modelString, "RocketModem III 4 port");
2129 rocketModel[i].numPorts = 4;
2130 rcktpt_io_addr[i] = pci_resource_start(dev, 2);
2131 UPCIRingInd = rcktpt_io_addr[i] + _PCI_9030_RING_IND;
2132 ConfigIO = pci_resource_start(dev, 1);
2133 rcktpt_type[i] = ROCKET_TYPE_MODEMIII;
2140 sClockPrescale = 0x12; /* mod 2 (divide by 3) */
2141 rp_baud_base[i] = 921600;
2144 * If support_low_speed is set, use the slow clock
2145 * prescale, which supports 50 bps
2147 if (support_low_speed) {
2148 /* mod 9 (divide by 10) prescale */
2149 sClockPrescale = 0x19;
2150 rp_baud_base[i] = 230400;
2152 /* mod 4 (divide by 5) prescale */
2153 sClockPrescale = 0x14;
2154 rp_baud_base[i] = 460800;
2158 for (aiop = 0; aiop < max_num_aiops; aiop++)
2159 aiopio[aiop] = rcktpt_io_addr[i] + (aiop * 0x40);
2160 ctlp = sCtlNumToCtlPtr(i);
2161 num_aiops = sPCIInitController(ctlp, i, aiopio, max_num_aiops, ConfigIO, 0, FREQ_DIS, 0, altChanRingIndicator, UPCIRingInd);
2162 for (aiop = 0; aiop < max_num_aiops; aiop++)
2163 ctlp->AiopNumChan[aiop] = ports_per_aiop;
2165 dev_info(&dev->dev, "comtrol PCI controller #%d found at "
2166 "address %04lx, %d AIOP(s) (%s), creating ttyR%d - %ld\n",
2167 i, rcktpt_io_addr[i], num_aiops, rocketModel[i].modelString,
2168 rocketModel[i].startingPortNumber,
2169 rocketModel[i].startingPortNumber + rocketModel[i].numPorts-1);
2171 if (num_aiops <= 0) {
2172 rcktpt_io_addr[i] = 0;
2177 /* Reset the AIOPIC, init the serial ports */
2178 for (aiop = 0; aiop < num_aiops; aiop++) {
2179 sResetAiopByNum(ctlp, aiop);
2180 num_chan = ports_per_aiop;
2181 for (chan = 0; chan < num_chan; chan++)
2182 init_r_port(i, aiop, chan, dev);
2185 /* Rocket modems must be reset */
2186 if ((rcktpt_type[i] == ROCKET_TYPE_MODEM) ||
2187 (rcktpt_type[i] == ROCKET_TYPE_MODEMII) ||
2188 (rcktpt_type[i] == ROCKET_TYPE_MODEMIII)) {
2189 num_chan = ports_per_aiop;
2190 for (chan = 0; chan < num_chan; chan++)
2191 sPCIModemReset(ctlp, chan, 1);
2193 for (chan = 0; chan < num_chan; chan++)
2194 sPCIModemReset(ctlp, chan, 0);
2196 rmSpeakerReset(ctlp, rocketModel[i].model);
2202 * Probes for PCI cards, inits them if found
2203 * Input: board_found = number of ISA boards already found, or the
2204 * starting board number
2205 * Returns: Number of PCI boards found
2207 static int __init init_PCI(int boards_found)
2209 struct pci_dev *dev = NULL;
2212 /* Work through the PCI device list, pulling out ours */
2213 while ((dev = pci_get_device(PCI_VENDOR_ID_RP, PCI_ANY_ID, dev))) {
2214 if (register_PCI(count + boards_found, dev))
2220 #endif /* CONFIG_PCI */
2223 * Probes for ISA cards
2224 * Input: i = the board number to look for
2225 * Returns: 1 if board found, 0 else
2227 static int __init init_ISA(int i)
2229 int num_aiops, num_chan = 0, total_num_chan = 0;
2231 unsigned int aiopio[MAX_AIOPS_PER_BOARD];
2235 /* If io_addr is zero, no board configured */
2236 if (rcktpt_io_addr[i] == 0)
2239 /* Reserve the IO region */
2240 if (!request_region(rcktpt_io_addr[i], 64, "Comtrol RocketPort")) {
2241 printk(KERN_ERR "Unable to reserve IO region for configured "
2242 "ISA RocketPort at address 0x%lx, board not "
2243 "installed...\n", rcktpt_io_addr[i]);
2244 rcktpt_io_addr[i] = 0;
2248 ctlp = sCtlNumToCtlPtr(i);
2250 ctlp->boardType = rcktpt_type[i];
2252 switch (rcktpt_type[i]) {
2253 case ROCKET_TYPE_PC104:
2254 type_string = "(PC104)";
2256 case ROCKET_TYPE_MODEM:
2257 type_string = "(RocketModem)";
2259 case ROCKET_TYPE_MODEMII:
2260 type_string = "(RocketModem II)";
2268 * If support_low_speed is set, use the slow clock prescale,
2269 * which supports 50 bps
2271 if (support_low_speed) {
2272 sClockPrescale = 0x19; /* mod 9 (divide by 10) prescale */
2273 rp_baud_base[i] = 230400;
2275 sClockPrescale = 0x14; /* mod 4 (divide by 5) prescale */
2276 rp_baud_base[i] = 460800;
2279 for (aiop = 0; aiop < MAX_AIOPS_PER_BOARD; aiop++)
2280 aiopio[aiop] = rcktpt_io_addr[i] + (aiop * 0x400);
2282 num_aiops = sInitController(ctlp, i, controller + (i * 0x400), aiopio, MAX_AIOPS_PER_BOARD, 0, FREQ_DIS, 0);
2284 if (ctlp->boardType == ROCKET_TYPE_PC104) {
2285 sEnAiop(ctlp, 2); /* only one AIOPIC, but these */
2286 sEnAiop(ctlp, 3); /* CSels used for other stuff */
2289 /* If something went wrong initing the AIOP's release the ISA IO memory */
2290 if (num_aiops <= 0) {
2291 release_region(rcktpt_io_addr[i], 64);
2292 rcktpt_io_addr[i] = 0;
2296 rocketModel[i].startingPortNumber = nextLineNumber;
2298 for (aiop = 0; aiop < num_aiops; aiop++) {
2299 sResetAiopByNum(ctlp, aiop);
2300 sEnAiop(ctlp, aiop);
2301 num_chan = sGetAiopNumChan(ctlp, aiop);
2302 total_num_chan += num_chan;
2303 for (chan = 0; chan < num_chan; chan++)
2304 init_r_port(i, aiop, chan, NULL);
2307 if ((rcktpt_type[i] == ROCKET_TYPE_MODEM) || (rcktpt_type[i] == ROCKET_TYPE_MODEMII)) {
2308 num_chan = sGetAiopNumChan(ctlp, 0);
2309 total_num_chan = num_chan;
2310 for (chan = 0; chan < num_chan; chan++)
2311 sModemReset(ctlp, chan, 1);
2313 for (chan = 0; chan < num_chan; chan++)
2314 sModemReset(ctlp, chan, 0);
2316 strcpy(rocketModel[i].modelString, "RocketModem ISA");
2318 strcpy(rocketModel[i].modelString, "RocketPort ISA");
2320 rocketModel[i].numPorts = total_num_chan;
2321 rocketModel[i].model = MODEL_ISA;
2323 printk(KERN_INFO "RocketPort ISA card #%d found at 0x%lx - %d AIOPs %s\n",
2324 i, rcktpt_io_addr[i], num_aiops, type_string);
2326 printk(KERN_INFO "Installing %s, creating /dev/ttyR%d - %ld\n",
2327 rocketModel[i].modelString,
2328 rocketModel[i].startingPortNumber,
2329 rocketModel[i].startingPortNumber +
2330 rocketModel[i].numPorts - 1);
2335 static const struct tty_operations rocket_ops = {
2339 .put_char = rp_put_char,
2340 .write_room = rp_write_room,
2341 .chars_in_buffer = rp_chars_in_buffer,
2342 .flush_buffer = rp_flush_buffer,
2344 .throttle = rp_throttle,
2345 .unthrottle = rp_unthrottle,
2346 .set_termios = rp_set_termios,
2349 .hangup = rp_hangup,
2350 .break_ctl = rp_break,
2351 .send_xchar = rp_send_xchar,
2352 .wait_until_sent = rp_wait_until_sent,
2353 .tiocmget = rp_tiocmget,
2354 .tiocmset = rp_tiocmset,
2357 static const struct tty_port_operations rocket_port_ops = {
2358 .carrier_raised = carrier_raised,
2363 * The module "startup" routine; it's run when the module is loaded.
2365 static int __init rp_init(void)
2367 int ret = -ENOMEM, pci_boards_found, isa_boards_found, i;
2369 printk(KERN_INFO "RocketPort device driver module, version %s, %s\n",
2370 ROCKET_VERSION, ROCKET_DATE);
2372 rocket_driver = alloc_tty_driver(MAX_RP_PORTS);
2377 * If board 1 is non-zero, there is at least one ISA configured. If controller is
2378 * zero, use the default controller IO address of board1 + 0x40.
2381 if (controller == 0)
2382 controller = board1 + 0x40;
2384 controller = 0; /* Used as a flag, meaning no ISA boards */
2387 /* If an ISA card is configured, reserve the 4 byte IO space for the Mudbac controller */
2388 if (controller && (!request_region(controller, 4, "Comtrol RocketPort"))) {
2389 printk(KERN_ERR "Unable to reserve IO region for first "
2390 "configured ISA RocketPort controller 0x%lx. "
2391 "Driver exiting\n", controller);
2396 /* Store ISA variable retrieved from command line or .conf file. */
2397 rcktpt_io_addr[0] = board1;
2398 rcktpt_io_addr[1] = board2;
2399 rcktpt_io_addr[2] = board3;
2400 rcktpt_io_addr[3] = board4;
2402 rcktpt_type[0] = modem1 ? ROCKET_TYPE_MODEM : ROCKET_TYPE_NORMAL;
2403 rcktpt_type[0] = pc104_1[0] ? ROCKET_TYPE_PC104 : rcktpt_type[0];
2404 rcktpt_type[1] = modem2 ? ROCKET_TYPE_MODEM : ROCKET_TYPE_NORMAL;
2405 rcktpt_type[1] = pc104_2[0] ? ROCKET_TYPE_PC104 : rcktpt_type[1];
2406 rcktpt_type[2] = modem3 ? ROCKET_TYPE_MODEM : ROCKET_TYPE_NORMAL;
2407 rcktpt_type[2] = pc104_3[0] ? ROCKET_TYPE_PC104 : rcktpt_type[2];
2408 rcktpt_type[3] = modem4 ? ROCKET_TYPE_MODEM : ROCKET_TYPE_NORMAL;
2409 rcktpt_type[3] = pc104_4[0] ? ROCKET_TYPE_PC104 : rcktpt_type[3];
2412 * Set up the tty driver structure and then register this
2413 * driver with the tty layer.
2416 rocket_driver->flags = TTY_DRIVER_DYNAMIC_DEV;
2417 rocket_driver->name = "ttyR";
2418 rocket_driver->driver_name = "Comtrol RocketPort";
2419 rocket_driver->major = TTY_ROCKET_MAJOR;
2420 rocket_driver->minor_start = 0;
2421 rocket_driver->type = TTY_DRIVER_TYPE_SERIAL;
2422 rocket_driver->subtype = SERIAL_TYPE_NORMAL;
2423 rocket_driver->init_termios = tty_std_termios;
2424 rocket_driver->init_termios.c_cflag =
2425 B9600 | CS8 | CREAD | HUPCL | CLOCAL;
2426 rocket_driver->init_termios.c_ispeed = 9600;
2427 rocket_driver->init_termios.c_ospeed = 9600;
2428 #ifdef ROCKET_SOFT_FLOW
2429 rocket_driver->flags |= TTY_DRIVER_REAL_RAW;
2431 tty_set_operations(rocket_driver, &rocket_ops);
2433 ret = tty_register_driver(rocket_driver);
2435 printk(KERN_ERR "Couldn't install tty RocketPort driver\n");
2436 goto err_controller;
2439 #ifdef ROCKET_DEBUG_OPEN
2440 printk(KERN_INFO "RocketPort driver is major %d\n", rocket_driver.major);
2444 * OK, let's probe each of the controllers looking for boards. Any boards found
2445 * will be initialized here.
2447 isa_boards_found = 0;
2448 pci_boards_found = 0;
2450 for (i = 0; i < NUM_BOARDS; i++) {
2456 if (isa_boards_found < NUM_BOARDS)
2457 pci_boards_found = init_PCI(isa_boards_found);
2460 max_board = pci_boards_found + isa_boards_found;
2462 if (max_board == 0) {
2463 printk(KERN_ERR "No rocketport ports found; unloading driver\n");
2470 tty_unregister_driver(rocket_driver);
2473 release_region(controller, 4);
2475 put_tty_driver(rocket_driver);
2481 static void rp_cleanup_module(void)
2486 del_timer_sync(&rocket_timer);
2488 retval = tty_unregister_driver(rocket_driver);
2490 printk(KERN_ERR "Error %d while trying to unregister "
2491 "rocketport driver\n", -retval);
2493 for (i = 0; i < MAX_RP_PORTS; i++)
2495 tty_unregister_device(rocket_driver, i);
2496 tty_port_destroy(&rp_table[i]->port);
2500 put_tty_driver(rocket_driver);
2502 for (i = 0; i < NUM_BOARDS; i++) {
2503 if (rcktpt_io_addr[i] <= 0 || is_PCI[i])
2505 release_region(rcktpt_io_addr[i], 64);
2508 release_region(controller, 4);
2511 /***************************************************************************
2512 Function: sInitController
2513 Purpose: Initialization of controller global registers and controller
2515 Call: sInitController(CtlP,CtlNum,MudbacIO,AiopIOList,AiopIOListSize,
2516 IRQNum,Frequency,PeriodicOnly)
2517 CONTROLLER_T *CtlP; Ptr to controller structure
2518 int CtlNum; Controller number
2519 ByteIO_t MudbacIO; Mudbac base I/O address.
2520 ByteIO_t *AiopIOList; List of I/O addresses for each AIOP.
2521 This list must be in the order the AIOPs will be found on the
2522 controller. Once an AIOP in the list is not found, it is
2523 assumed that there are no more AIOPs on the controller.
2524 int AiopIOListSize; Number of addresses in AiopIOList
2525 int IRQNum; Interrupt Request number. Can be any of the following:
2526 0: Disable global interrupts
2535 Byte_t Frequency: A flag identifying the frequency
2536 of the periodic interrupt, can be any one of the following:
2537 FREQ_DIS - periodic interrupt disabled
2538 FREQ_137HZ - 137 Hertz
2539 FREQ_69HZ - 69 Hertz
2540 FREQ_34HZ - 34 Hertz
2541 FREQ_17HZ - 17 Hertz
2544 If IRQNum is set to 0 the Frequency parameter is
2545 overidden, it is forced to a value of FREQ_DIS.
2546 int PeriodicOnly: 1 if all interrupts except the periodic
2547 interrupt are to be blocked.
2548 0 is both the periodic interrupt and
2549 other channel interrupts are allowed.
2550 If IRQNum is set to 0 the PeriodicOnly parameter is
2551 overidden, it is forced to a value of 0.
2552 Return: int: Number of AIOPs on the controller, or CTLID_NULL if controller
2553 initialization failed.
2556 If periodic interrupts are to be disabled but AIOP interrupts
2557 are allowed, set Frequency to FREQ_DIS and PeriodicOnly to 0.
2559 If interrupts are to be completely disabled set IRQNum to 0.
2561 Setting Frequency to FREQ_DIS and PeriodicOnly to 1 is an
2562 invalid combination.
2564 This function performs initialization of global interrupt modes,
2565 but it does not actually enable global interrupts. To enable
2566 and disable global interrupts use functions sEnGlobalInt() and
2567 sDisGlobalInt(). Enabling of global interrupts is normally not
2568 done until all other initializations are complete.
2570 Even if interrupts are globally enabled, they must also be
2571 individually enabled for each channel that is to generate
2574 Warnings: No range checking on any of the parameters is done.
2576 No context switches are allowed while executing this function.
2578 After this function all AIOPs on the controller are disabled,
2579 they can be enabled with sEnAiop().
2581 static int sInitController(CONTROLLER_T * CtlP, int CtlNum, ByteIO_t MudbacIO,
2582 ByteIO_t * AiopIOList, int AiopIOListSize,
2583 int IRQNum, Byte_t Frequency, int PeriodicOnly)
2589 CtlP->AiopIntrBits = aiop_intr_bits;
2590 CtlP->AltChanRingIndicator = 0;
2591 CtlP->CtlNum = CtlNum;
2592 CtlP->CtlID = CTLID_0001; /* controller release 1 */
2593 CtlP->BusType = isISA;
2594 CtlP->MBaseIO = MudbacIO;
2595 CtlP->MReg1IO = MudbacIO + 1;
2596 CtlP->MReg2IO = MudbacIO + 2;
2597 CtlP->MReg3IO = MudbacIO + 3;
2599 CtlP->MReg2 = 0; /* interrupt disable */
2600 CtlP->MReg3 = 0; /* no periodic interrupts */
2602 if (sIRQMap[IRQNum] == 0) { /* interrupts globally disabled */
2603 CtlP->MReg2 = 0; /* interrupt disable */
2604 CtlP->MReg3 = 0; /* no periodic interrupts */
2606 CtlP->MReg2 = sIRQMap[IRQNum]; /* set IRQ number */
2607 CtlP->MReg3 = Frequency; /* set frequency */
2608 if (PeriodicOnly) { /* periodic interrupt only */
2609 CtlP->MReg3 |= PERIODIC_ONLY;
2613 sOutB(CtlP->MReg2IO, CtlP->MReg2);
2614 sOutB(CtlP->MReg3IO, CtlP->MReg3);
2615 sControllerEOI(CtlP); /* clear EOI if warm init */
2618 for (i = done = 0; i < AiopIOListSize; i++) {
2620 CtlP->AiopIO[i] = (WordIO_t) io;
2621 CtlP->AiopIntChanIO[i] = io + _INT_CHAN;
2622 sOutB(CtlP->MReg2IO, CtlP->MReg2 | (i & 0x03)); /* AIOP index */
2623 sOutB(MudbacIO, (Byte_t) (io >> 6)); /* set up AIOP I/O in MUDBAC */
2626 sEnAiop(CtlP, i); /* enable the AIOP */
2627 CtlP->AiopID[i] = sReadAiopID(io); /* read AIOP ID */
2628 if (CtlP->AiopID[i] == AIOPID_NULL) /* if AIOP does not exist */
2629 done = 1; /* done looking for AIOPs */
2631 CtlP->AiopNumChan[i] = sReadAiopNumChan((WordIO_t) io); /* num channels in AIOP */
2632 sOutW((WordIO_t) io + _INDX_ADDR, _CLK_PRE); /* clock prescaler */
2633 sOutB(io + _INDX_DATA, sClockPrescale);
2634 CtlP->NumAiop++; /* bump count of AIOPs */
2636 sDisAiop(CtlP, i); /* disable AIOP */
2639 if (CtlP->NumAiop == 0)
2642 return (CtlP->NumAiop);
2645 /***************************************************************************
2646 Function: sReadAiopID
2647 Purpose: Read the AIOP idenfication number directly from an AIOP.
2648 Call: sReadAiopID(io)
2649 ByteIO_t io: AIOP base I/O address
2650 Return: int: Flag AIOPID_XXXX if a valid AIOP is found, where X
2651 is replace by an identifying number.
2652 Flag AIOPID_NULL if no valid AIOP is found
2653 Warnings: No context switches are allowed while executing this function.
2656 static int sReadAiopID(ByteIO_t io)
2658 Byte_t AiopID; /* ID byte from AIOP */
2660 sOutB(io + _CMD_REG, RESET_ALL); /* reset AIOP */
2661 sOutB(io + _CMD_REG, 0x0);
2662 AiopID = sInW(io + _CHN_STAT0) & 0x07;
2665 else /* AIOP does not exist */
2669 /***************************************************************************
2670 Function: sReadAiopNumChan
2671 Purpose: Read the number of channels available in an AIOP directly from
2673 Call: sReadAiopNumChan(io)
2674 WordIO_t io: AIOP base I/O address
2675 Return: int: The number of channels available
2676 Comments: The number of channels is determined by write/reads from identical
2677 offsets within the SRAM address spaces for channels 0 and 4.
2678 If the channel 4 space is mirrored to channel 0 it is a 4 channel
2679 AIOP, otherwise it is an 8 channel.
2680 Warnings: No context switches are allowed while executing this function.
2682 static int sReadAiopNumChan(WordIO_t io)
2685 static Byte_t R[4] = { 0x00, 0x00, 0x34, 0x12 };
2687 /* write to chan 0 SRAM */
2688 out32((DWordIO_t) io + _INDX_ADDR, R);
2689 sOutW(io + _INDX_ADDR, 0); /* read from SRAM, chan 0 */
2690 x = sInW(io + _INDX_DATA);
2691 sOutW(io + _INDX_ADDR, 0x4000); /* read from SRAM, chan 4 */
2692 if (x != sInW(io + _INDX_DATA)) /* if different must be 8 chan */
2698 /***************************************************************************
2700 Purpose: Initialization of a channel and channel structure
2701 Call: sInitChan(CtlP,ChP,AiopNum,ChanNum)
2702 CONTROLLER_T *CtlP; Ptr to controller structure
2703 CHANNEL_T *ChP; Ptr to channel structure
2704 int AiopNum; AIOP number within controller
2705 int ChanNum; Channel number within AIOP
2706 Return: int: 1 if initialization succeeded, 0 if it fails because channel
2707 number exceeds number of channels available in AIOP.
2708 Comments: This function must be called before a channel can be used.
2709 Warnings: No range checking on any of the parameters is done.
2711 No context switches are allowed while executing this function.
2713 static int sInitChan(CONTROLLER_T * CtlP, CHANNEL_T * ChP, int AiopNum,
2724 if (ChanNum >= CtlP->AiopNumChan[AiopNum])
2725 return 0; /* exceeds num chans in AIOP */
2727 /* Channel, AIOP, and controller identifiers */
2729 ChP->ChanID = CtlP->AiopID[AiopNum];
2730 ChP->AiopNum = AiopNum;
2731 ChP->ChanNum = ChanNum;
2733 /* Global direct addresses */
2734 AiopIO = CtlP->AiopIO[AiopNum];
2735 ChP->Cmd = (ByteIO_t) AiopIO + _CMD_REG;
2736 ChP->IntChan = (ByteIO_t) AiopIO + _INT_CHAN;
2737 ChP->IntMask = (ByteIO_t) AiopIO + _INT_MASK;
2738 ChP->IndexAddr = (DWordIO_t) AiopIO + _INDX_ADDR;
2739 ChP->IndexData = AiopIO + _INDX_DATA;
2741 /* Channel direct addresses */
2742 ChIOOff = AiopIO + ChP->ChanNum * 2;
2743 ChP->TxRxData = ChIOOff + _TD0;
2744 ChP->ChanStat = ChIOOff + _CHN_STAT0;
2745 ChP->TxRxCount = ChIOOff + _FIFO_CNT0;
2746 ChP->IntID = (ByteIO_t) AiopIO + ChP->ChanNum + _INT_ID0;
2748 /* Initialize the channel from the RData array */
2749 for (i = 0; i < RDATASIZE; i += 4) {
2751 R[1] = RData[i + 1] + 0x10 * ChanNum;
2752 R[2] = RData[i + 2];
2753 R[3] = RData[i + 3];
2754 out32(ChP->IndexAddr, R);
2758 for (i = 0; i < RREGDATASIZE; i += 4) {
2759 ChR[i] = RRegData[i];
2760 ChR[i + 1] = RRegData[i + 1] + 0x10 * ChanNum;
2761 ChR[i + 2] = RRegData[i + 2];
2762 ChR[i + 3] = RRegData[i + 3];
2765 /* Indexed registers */
2766 ChOff = (Word_t) ChanNum *0x1000;
2768 if (sClockPrescale == 0x14)
2773 ChP->BaudDiv[0] = (Byte_t) (ChOff + _BAUD);
2774 ChP->BaudDiv[1] = (Byte_t) ((ChOff + _BAUD) >> 8);
2775 ChP->BaudDiv[2] = (Byte_t) brd9600;
2776 ChP->BaudDiv[3] = (Byte_t) (brd9600 >> 8);
2777 out32(ChP->IndexAddr, ChP->BaudDiv);
2779 ChP->TxControl[0] = (Byte_t) (ChOff + _TX_CTRL);
2780 ChP->TxControl[1] = (Byte_t) ((ChOff + _TX_CTRL) >> 8);
2781 ChP->TxControl[2] = 0;
2782 ChP->TxControl[3] = 0;
2783 out32(ChP->IndexAddr, ChP->TxControl);
2785 ChP->RxControl[0] = (Byte_t) (ChOff + _RX_CTRL);
2786 ChP->RxControl[1] = (Byte_t) ((ChOff + _RX_CTRL) >> 8);
2787 ChP->RxControl[2] = 0;
2788 ChP->RxControl[3] = 0;
2789 out32(ChP->IndexAddr, ChP->RxControl);
2791 ChP->TxEnables[0] = (Byte_t) (ChOff + _TX_ENBLS);
2792 ChP->TxEnables[1] = (Byte_t) ((ChOff + _TX_ENBLS) >> 8);
2793 ChP->TxEnables[2] = 0;
2794 ChP->TxEnables[3] = 0;
2795 out32(ChP->IndexAddr, ChP->TxEnables);
2797 ChP->TxCompare[0] = (Byte_t) (ChOff + _TXCMP1);
2798 ChP->TxCompare[1] = (Byte_t) ((ChOff + _TXCMP1) >> 8);
2799 ChP->TxCompare[2] = 0;
2800 ChP->TxCompare[3] = 0;
2801 out32(ChP->IndexAddr, ChP->TxCompare);
2803 ChP->TxReplace1[0] = (Byte_t) (ChOff + _TXREP1B1);
2804 ChP->TxReplace1[1] = (Byte_t) ((ChOff + _TXREP1B1) >> 8);
2805 ChP->TxReplace1[2] = 0;
2806 ChP->TxReplace1[3] = 0;
2807 out32(ChP->IndexAddr, ChP->TxReplace1);
2809 ChP->TxReplace2[0] = (Byte_t) (ChOff + _TXREP2);
2810 ChP->TxReplace2[1] = (Byte_t) ((ChOff + _TXREP2) >> 8);
2811 ChP->TxReplace2[2] = 0;
2812 ChP->TxReplace2[3] = 0;
2813 out32(ChP->IndexAddr, ChP->TxReplace2);
2815 ChP->TxFIFOPtrs = ChOff + _TXF_OUTP;
2816 ChP->TxFIFO = ChOff + _TX_FIFO;
2818 sOutB(ChP->Cmd, (Byte_t) ChanNum | RESTXFCNT); /* apply reset Tx FIFO count */
2819 sOutB(ChP->Cmd, (Byte_t) ChanNum); /* remove reset Tx FIFO count */
2820 sOutW((WordIO_t) ChP->IndexAddr, ChP->TxFIFOPtrs); /* clear Tx in/out ptrs */
2821 sOutW(ChP->IndexData, 0);
2822 ChP->RxFIFOPtrs = ChOff + _RXF_OUTP;
2823 ChP->RxFIFO = ChOff + _RX_FIFO;
2825 sOutB(ChP->Cmd, (Byte_t) ChanNum | RESRXFCNT); /* apply reset Rx FIFO count */
2826 sOutB(ChP->Cmd, (Byte_t) ChanNum); /* remove reset Rx FIFO count */
2827 sOutW((WordIO_t) ChP->IndexAddr, ChP->RxFIFOPtrs); /* clear Rx out ptr */
2828 sOutW(ChP->IndexData, 0);
2829 sOutW((WordIO_t) ChP->IndexAddr, ChP->RxFIFOPtrs + 2); /* clear Rx in ptr */
2830 sOutW(ChP->IndexData, 0);
2831 ChP->TxPrioCnt = ChOff + _TXP_CNT;
2832 sOutW((WordIO_t) ChP->IndexAddr, ChP->TxPrioCnt);
2833 sOutB(ChP->IndexData, 0);
2834 ChP->TxPrioPtr = ChOff + _TXP_PNTR;
2835 sOutW((WordIO_t) ChP->IndexAddr, ChP->TxPrioPtr);
2836 sOutB(ChP->IndexData, 0);
2837 ChP->TxPrioBuf = ChOff + _TXP_BUF;
2838 sEnRxProcessor(ChP); /* start the Rx processor */
2843 /***************************************************************************
2844 Function: sStopRxProcessor
2845 Purpose: Stop the receive processor from processing a channel.
2846 Call: sStopRxProcessor(ChP)
2847 CHANNEL_T *ChP; Ptr to channel structure
2849 Comments: The receive processor can be started again with sStartRxProcessor().
2850 This function causes the receive processor to skip over the
2851 stopped channel. It does not stop it from processing other channels.
2853 Warnings: No context switches are allowed while executing this function.
2855 Do not leave the receive processor stopped for more than one
2858 After calling this function a delay of 4 uS is required to ensure
2859 that the receive processor is no longer processing this channel.
2861 static void sStopRxProcessor(CHANNEL_T * ChP)
2869 out32(ChP->IndexAddr, R);
2872 /***************************************************************************
2873 Function: sFlushRxFIFO
2874 Purpose: Flush the Rx FIFO
2875 Call: sFlushRxFIFO(ChP)
2876 CHANNEL_T *ChP; Ptr to channel structure
2878 Comments: To prevent data from being enqueued or dequeued in the Tx FIFO
2879 while it is being flushed the receive processor is stopped
2880 and the transmitter is disabled. After these operations a
2881 4 uS delay is done before clearing the pointers to allow
2882 the receive processor to stop. These items are handled inside
2884 Warnings: No context switches are allowed while executing this function.
2886 static void sFlushRxFIFO(CHANNEL_T * ChP)
2889 Byte_t Ch; /* channel number within AIOP */
2890 int RxFIFOEnabled; /* 1 if Rx FIFO enabled */
2892 if (sGetRxCnt(ChP) == 0) /* Rx FIFO empty */
2893 return; /* don't need to flush */
2896 if (ChP->R[0x32] == 0x08) { /* Rx FIFO is enabled */
2898 sDisRxFIFO(ChP); /* disable it */
2899 for (i = 0; i < 2000 / 200; i++) /* delay 2 uS to allow proc to disable FIFO */
2900 sInB(ChP->IntChan); /* depends on bus i/o timing */
2902 sGetChanStatus(ChP); /* clear any pending Rx errors in chan stat */
2903 Ch = (Byte_t) sGetChanNum(ChP);
2904 sOutB(ChP->Cmd, Ch | RESRXFCNT); /* apply reset Rx FIFO count */
2905 sOutB(ChP->Cmd, Ch); /* remove reset Rx FIFO count */
2906 sOutW((WordIO_t) ChP->IndexAddr, ChP->RxFIFOPtrs); /* clear Rx out ptr */
2907 sOutW(ChP->IndexData, 0);
2908 sOutW((WordIO_t) ChP->IndexAddr, ChP->RxFIFOPtrs + 2); /* clear Rx in ptr */
2909 sOutW(ChP->IndexData, 0);
2911 sEnRxFIFO(ChP); /* enable Rx FIFO */
2914 /***************************************************************************
2915 Function: sFlushTxFIFO
2916 Purpose: Flush the Tx FIFO
2917 Call: sFlushTxFIFO(ChP)
2918 CHANNEL_T *ChP; Ptr to channel structure
2920 Comments: To prevent data from being enqueued or dequeued in the Tx FIFO
2921 while it is being flushed the receive processor is stopped
2922 and the transmitter is disabled. After these operations a
2923 4 uS delay is done before clearing the pointers to allow
2924 the receive processor to stop. These items are handled inside
2926 Warnings: No context switches are allowed while executing this function.
2928 static void sFlushTxFIFO(CHANNEL_T * ChP)
2931 Byte_t Ch; /* channel number within AIOP */
2932 int TxEnabled; /* 1 if transmitter enabled */
2934 if (sGetTxCnt(ChP) == 0) /* Tx FIFO empty */
2935 return; /* don't need to flush */
2938 if (ChP->TxControl[3] & TX_ENABLE) {
2940 sDisTransmit(ChP); /* disable transmitter */
2942 sStopRxProcessor(ChP); /* stop Rx processor */
2943 for (i = 0; i < 4000 / 200; i++) /* delay 4 uS to allow proc to stop */
2944 sInB(ChP->IntChan); /* depends on bus i/o timing */
2945 Ch = (Byte_t) sGetChanNum(ChP);
2946 sOutB(ChP->Cmd, Ch | RESTXFCNT); /* apply reset Tx FIFO count */
2947 sOutB(ChP->Cmd, Ch); /* remove reset Tx FIFO count */
2948 sOutW((WordIO_t) ChP->IndexAddr, ChP->TxFIFOPtrs); /* clear Tx in/out ptrs */
2949 sOutW(ChP->IndexData, 0);
2951 sEnTransmit(ChP); /* enable transmitter */
2952 sStartRxProcessor(ChP); /* restart Rx processor */
2955 /***************************************************************************
2956 Function: sWriteTxPrioByte
2957 Purpose: Write a byte of priority transmit data to a channel
2958 Call: sWriteTxPrioByte(ChP,Data)
2959 CHANNEL_T *ChP; Ptr to channel structure
2960 Byte_t Data; The transmit data byte
2962 Return: int: 1 if the bytes is successfully written, otherwise 0.
2964 Comments: The priority byte is transmitted before any data in the Tx FIFO.
2966 Warnings: No context switches are allowed while executing this function.
2968 static int sWriteTxPrioByte(CHANNEL_T * ChP, Byte_t Data)
2970 Byte_t DWBuf[4]; /* buffer for double word writes */
2971 Word_t *WordPtr; /* must be far because Win SS != DS */
2972 register DWordIO_t IndexAddr;
2974 if (sGetTxCnt(ChP) > 1) { /* write it to Tx priority buffer */
2975 IndexAddr = ChP->IndexAddr;
2976 sOutW((WordIO_t) IndexAddr, ChP->TxPrioCnt); /* get priority buffer status */
2977 if (sInB((ByteIO_t) ChP->IndexData) & PRI_PEND) /* priority buffer busy */
2978 return (0); /* nothing sent */
2980 WordPtr = (Word_t *) (&DWBuf[0]);
2981 *WordPtr = ChP->TxPrioBuf; /* data byte address */
2983 DWBuf[2] = Data; /* data byte value */
2984 out32(IndexAddr, DWBuf); /* write it out */
2986 *WordPtr = ChP->TxPrioCnt; /* Tx priority count address */
2988 DWBuf[2] = PRI_PEND + 1; /* indicate 1 byte pending */
2989 DWBuf[3] = 0; /* priority buffer pointer */
2990 out32(IndexAddr, DWBuf); /* write it out */
2991 } else { /* write it to Tx FIFO */
2993 sWriteTxByte(sGetTxRxDataIO(ChP), Data);
2995 return (1); /* 1 byte sent */
2998 /***************************************************************************
2999 Function: sEnInterrupts
3000 Purpose: Enable one or more interrupts for a channel
3001 Call: sEnInterrupts(ChP,Flags)
3002 CHANNEL_T *ChP; Ptr to channel structure
3003 Word_t Flags: Interrupt enable flags, can be any combination
3004 of the following flags:
3005 TXINT_EN: Interrupt on Tx FIFO empty
3006 RXINT_EN: Interrupt on Rx FIFO at trigger level (see
3008 SRCINT_EN: Interrupt on SRC (Special Rx Condition)
3009 MCINT_EN: Interrupt on modem input change
3010 CHANINT_EN: Allow channel interrupt signal to the AIOP's
3011 Interrupt Channel Register.
3013 Comments: If an interrupt enable flag is set in Flags, that interrupt will be
3014 enabled. If an interrupt enable flag is not set in Flags, that
3015 interrupt will not be changed. Interrupts can be disabled with
3016 function sDisInterrupts().
3018 This function sets the appropriate bit for the channel in the AIOP's
3019 Interrupt Mask Register if the CHANINT_EN flag is set. This allows
3020 this channel's bit to be set in the AIOP's Interrupt Channel Register.
3022 Interrupts must also be globally enabled before channel interrupts
3023 will be passed on to the host. This is done with function
3026 In some cases it may be desirable to disable interrupts globally but
3027 enable channel interrupts. This would allow the global interrupt
3028 status register to be used to determine which AIOPs need service.
3030 static void sEnInterrupts(CHANNEL_T * ChP, Word_t Flags)
3032 Byte_t Mask; /* Interrupt Mask Register */
3034 ChP->RxControl[2] |=
3035 ((Byte_t) Flags & (RXINT_EN | SRCINT_EN | MCINT_EN));
3037 out32(ChP->IndexAddr, ChP->RxControl);
3039 ChP->TxControl[2] |= ((Byte_t) Flags & TXINT_EN);
3041 out32(ChP->IndexAddr, ChP->TxControl);
3043 if (Flags & CHANINT_EN) {
3044 Mask = sInB(ChP->IntMask) | sBitMapSetTbl[ChP->ChanNum];
3045 sOutB(ChP->IntMask, Mask);
3049 /***************************************************************************
3050 Function: sDisInterrupts
3051 Purpose: Disable one or more interrupts for a channel
3052 Call: sDisInterrupts(ChP,Flags)
3053 CHANNEL_T *ChP; Ptr to channel structure
3054 Word_t Flags: Interrupt flags, can be any combination
3055 of the following flags:
3056 TXINT_EN: Interrupt on Tx FIFO empty
3057 RXINT_EN: Interrupt on Rx FIFO at trigger level (see
3059 SRCINT_EN: Interrupt on SRC (Special Rx Condition)
3060 MCINT_EN: Interrupt on modem input change
3061 CHANINT_EN: Disable channel interrupt signal to the
3062 AIOP's Interrupt Channel Register.
3064 Comments: If an interrupt flag is set in Flags, that interrupt will be
3065 disabled. If an interrupt flag is not set in Flags, that
3066 interrupt will not be changed. Interrupts can be enabled with
3067 function sEnInterrupts().
3069 This function clears the appropriate bit for the channel in the AIOP's
3070 Interrupt Mask Register if the CHANINT_EN flag is set. This blocks
3071 this channel's bit from being set in the AIOP's Interrupt Channel
3074 static void sDisInterrupts(CHANNEL_T * ChP, Word_t Flags)
3076 Byte_t Mask; /* Interrupt Mask Register */
3078 ChP->RxControl[2] &=
3079 ~((Byte_t) Flags & (RXINT_EN | SRCINT_EN | MCINT_EN));
3080 out32(ChP->IndexAddr, ChP->RxControl);
3081 ChP->TxControl[2] &= ~((Byte_t) Flags & TXINT_EN);
3082 out32(ChP->IndexAddr, ChP->TxControl);
3084 if (Flags & CHANINT_EN) {
3085 Mask = sInB(ChP->IntMask) & sBitMapClrTbl[ChP->ChanNum];
3086 sOutB(ChP->IntMask, Mask);
3090 static void sSetInterfaceMode(CHANNEL_T * ChP, Byte_t mode)
3092 sOutB(ChP->CtlP->AiopIO[2], (mode & 0x18) | ChP->ChanNum);
3096 * Not an official SSCI function, but how to reset RocketModems.
3099 static void sModemReset(CONTROLLER_T * CtlP, int chan, int on)
3104 addr = CtlP->AiopIO[0] + 0x400;
3105 val = sInB(CtlP->MReg3IO);
3106 /* if AIOP[1] is not enabled, enable it */
3107 if ((val & 2) == 0) {
3108 val = sInB(CtlP->MReg2IO);
3109 sOutB(CtlP->MReg2IO, (val & 0xfc) | (1 & 0x03));
3110 sOutB(CtlP->MBaseIO, (unsigned char) (addr >> 6));
3116 sOutB(addr + chan, 0); /* apply or remove reset */
3121 * Not an official SSCI function, but how to reset RocketModems.
3124 static void sPCIModemReset(CONTROLLER_T * CtlP, int chan, int on)
3128 addr = CtlP->AiopIO[0] + 0x40; /* 2nd AIOP */
3131 sOutB(addr + chan, 0); /* apply or remove reset */
3134 /* Returns the line number given the controller (board), aiop and channel number */
3135 static unsigned char GetLineNumber(int ctrl, int aiop, int ch)
3137 return lineNumbers[(ctrl << 5) | (aiop << 3) | ch];
3141 * Stores the line number associated with a given controller (board), aiop
3142 * and channel number.
3143 * Returns: The line number assigned
3145 static unsigned char SetLineNumber(int ctrl, int aiop, int ch)
3147 lineNumbers[(ctrl << 5) | (aiop << 3) | ch] = nextLineNumber++;
3148 return (nextLineNumber - 1);