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 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 ((info->port.flags & ASYNC_INITIALIZED) == 0) {
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
618 static void init_r_port(int board, int aiop, int chan, struct pci_dev *pci_dev)
625 /* Get the next available line number */
626 line = SetLineNumber(board, aiop, chan);
628 ctlp = sCtlNumToCtlPtr(board);
630 /* Get a r_port struct for the port, fill it in and save it globally, indexed by line number */
631 info = kzalloc(sizeof (struct r_port), GFP_KERNEL);
633 printk(KERN_ERR "Couldn't allocate info struct for line #%d\n",
638 info->magic = RPORT_MAGIC;
644 tty_port_init(&info->port);
645 info->port.ops = &rocket_port_ops;
646 init_completion(&info->close_wait);
647 info->flags &= ~ROCKET_MODE_MASK;
648 switch (pc104[board][line]) {
650 info->flags |= ROCKET_MODE_RS422;
653 info->flags |= ROCKET_MODE_RS485;
657 info->flags |= ROCKET_MODE_RS232;
661 info->intmask = RXF_TRIG | TXFIFO_MT | SRC_INT | DELTA_CD | DELTA_CTS | DELTA_DSR;
662 if (sInitChan(ctlp, &info->channel, aiop, chan) == 0) {
663 printk(KERN_ERR "RocketPort sInitChan(%d, %d, %d) failed!\n",
665 tty_port_destroy(&info->port);
670 rocketMode = info->flags & ROCKET_MODE_MASK;
672 if ((info->flags & ROCKET_RTS_TOGGLE) || (rocketMode == ROCKET_MODE_RS485))
673 sEnRTSToggle(&info->channel);
675 sDisRTSToggle(&info->channel);
677 if (ctlp->boardType == ROCKET_TYPE_PC104) {
678 switch (rocketMode) {
679 case ROCKET_MODE_RS485:
680 sSetInterfaceMode(&info->channel, InterfaceModeRS485);
682 case ROCKET_MODE_RS422:
683 sSetInterfaceMode(&info->channel, InterfaceModeRS422);
685 case ROCKET_MODE_RS232:
687 if (info->flags & ROCKET_RTS_TOGGLE)
688 sSetInterfaceMode(&info->channel, InterfaceModeRS232T);
690 sSetInterfaceMode(&info->channel, InterfaceModeRS232);
694 spin_lock_init(&info->slock);
695 mutex_init(&info->write_mtx);
696 rp_table[line] = info;
697 tty_port_register_device(&info->port, rocket_driver, line,
698 pci_dev ? &pci_dev->dev : NULL);
702 * Configures a rocketport port according to its termio settings. Called from
703 * user mode into the driver (exception handler). *info CD manipulation is spinlock protected.
705 static void configure_r_port(struct tty_struct *tty, struct r_port *info,
706 struct ktermios *old_termios)
711 int bits, baud, divisor;
713 struct ktermios *t = &tty->termios;
718 /* Byte size and parity */
719 if ((cflag & CSIZE) == CS8) {
726 if (cflag & CSTOPB) {
733 if (cflag & PARENB) {
736 if (cflag & PARODD) {
746 baud = tty_get_baud_rate(tty);
749 divisor = ((rp_baud_base[info->board] + (baud >> 1)) / baud) - 1;
750 if ((divisor >= 8192 || divisor < 0) && old_termios) {
751 baud = tty_termios_baud_rate(old_termios);
754 divisor = (rp_baud_base[info->board] / baud) - 1;
756 if (divisor >= 8192 || divisor < 0) {
758 divisor = (rp_baud_base[info->board] / baud) - 1;
760 info->cps = baud / bits;
761 sSetBaud(cp, divisor);
763 /* FIXME: Should really back compute a baud rate from the divisor */
764 tty_encode_baud_rate(tty, baud, baud);
766 if (cflag & CRTSCTS) {
767 info->intmask |= DELTA_CTS;
770 info->intmask &= ~DELTA_CTS;
773 if (cflag & CLOCAL) {
774 info->intmask &= ~DELTA_CD;
776 spin_lock_irqsave(&info->slock, flags);
777 if (sGetChanStatus(cp) & CD_ACT)
781 info->intmask |= DELTA_CD;
782 spin_unlock_irqrestore(&info->slock, flags);
786 * Handle software flow control in the board
788 #ifdef ROCKET_SOFT_FLOW
790 sEnTxSoftFlowCtl(cp);
796 sSetTxXONChar(cp, START_CHAR(tty));
797 sSetTxXOFFChar(cp, STOP_CHAR(tty));
799 sDisTxSoftFlowCtl(cp);
806 * Set up ignore/read mask words
808 info->read_status_mask = STMRCVROVRH | 0xFF;
810 info->read_status_mask |= STMFRAMEH | STMPARITYH;
811 if (I_BRKINT(tty) || I_PARMRK(tty))
812 info->read_status_mask |= STMBREAKH;
815 * Characters to ignore
817 info->ignore_status_mask = 0;
819 info->ignore_status_mask |= STMFRAMEH | STMPARITYH;
821 info->ignore_status_mask |= STMBREAKH;
823 * If we're ignoring parity and break indicators,
824 * ignore overruns too. (For real raw support).
827 info->ignore_status_mask |= STMRCVROVRH;
830 rocketMode = info->flags & ROCKET_MODE_MASK;
832 if ((info->flags & ROCKET_RTS_TOGGLE)
833 || (rocketMode == ROCKET_MODE_RS485))
838 sSetRTS(&info->channel);
840 if (cp->CtlP->boardType == ROCKET_TYPE_PC104) {
841 switch (rocketMode) {
842 case ROCKET_MODE_RS485:
843 sSetInterfaceMode(cp, InterfaceModeRS485);
845 case ROCKET_MODE_RS422:
846 sSetInterfaceMode(cp, InterfaceModeRS422);
848 case ROCKET_MODE_RS232:
850 if (info->flags & ROCKET_RTS_TOGGLE)
851 sSetInterfaceMode(cp, InterfaceModeRS232T);
853 sSetInterfaceMode(cp, InterfaceModeRS232);
859 static int carrier_raised(struct tty_port *port)
861 struct r_port *info = container_of(port, struct r_port, port);
862 return (sGetChanStatusLo(&info->channel) & CD_ACT) ? 1 : 0;
865 static void dtr_rts(struct tty_port *port, int on)
867 struct r_port *info = container_of(port, struct r_port, port);
869 sSetDTR(&info->channel);
870 sSetRTS(&info->channel);
872 sClrDTR(&info->channel);
873 sClrRTS(&info->channel);
878 * Exception handler that opens a serial port. Creates xmit_buf storage, fills in
879 * port's r_port struct. Initializes the port hardware.
881 static int rp_open(struct tty_struct *tty, struct file *filp)
884 struct tty_port *port;
889 info = rp_table[tty->index];
894 page = __get_free_page(GFP_KERNEL);
898 if (port->flags & ASYNC_CLOSING) {
899 retval = wait_for_completion_interruptible(&info->close_wait);
903 return ((port->flags & ASYNC_HUP_NOTIFY) ? -EAGAIN : -ERESTARTSYS);
907 * We must not sleep from here until the port is marked fully in use.
912 info->xmit_buf = (unsigned char *) page;
914 tty->driver_data = info;
915 tty_port_tty_set(port, tty);
917 if (port->count++ == 0) {
918 atomic_inc(&rp_num_ports_open);
920 #ifdef ROCKET_DEBUG_OPEN
921 printk(KERN_INFO "rocket mod++ = %d...\n",
922 atomic_read(&rp_num_ports_open));
925 #ifdef ROCKET_DEBUG_OPEN
926 printk(KERN_INFO "rp_open ttyR%d, count=%d\n", info->line, info->port.count);
930 * Info->count is now 1; so it's safe to sleep now.
932 if (!test_bit(ASYNCB_INITIALIZED, &port->flags)) {
934 sSetRxTrigger(cp, TRIG_1);
935 if (sGetChanStatus(cp) & CD_ACT)
939 sDisRxStatusMode(cp);
943 sEnInterrupts(cp, (TXINT_EN | MCINT_EN | RXINT_EN | SRCINT_EN | CHANINT_EN));
944 sSetRxTrigger(cp, TRIG_1);
947 sDisRxStatusMode(cp);
951 sDisTxSoftFlowCtl(cp);
956 set_bit(ASYNCB_INITIALIZED, &info->port.flags);
959 * Set up the tty->alt_speed kludge
961 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_HI)
962 tty->alt_speed = 57600;
963 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_VHI)
964 tty->alt_speed = 115200;
965 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_SHI)
966 tty->alt_speed = 230400;
967 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_WARP)
968 tty->alt_speed = 460800;
970 configure_r_port(tty, info, NULL);
971 if (tty->termios.c_cflag & CBAUD) {
976 /* Starts (or resets) the maint polling loop */
977 mod_timer(&rocket_timer, jiffies + POLL_PERIOD);
979 retval = tty_port_block_til_ready(port, tty, filp);
981 #ifdef ROCKET_DEBUG_OPEN
982 printk(KERN_INFO "rp_open returning after block_til_ready with %d\n", retval);
990 * Exception handler that closes a serial port. info->port.count is considered critical.
992 static void rp_close(struct tty_struct *tty, struct file *filp)
994 struct r_port *info = tty->driver_data;
995 struct tty_port *port = &info->port;
999 if (rocket_paranoia_check(info, "rp_close"))
1002 #ifdef ROCKET_DEBUG_OPEN
1003 printk(KERN_INFO "rp_close ttyR%d, count = %d\n", info->line, info->port.count);
1006 if (tty_port_close_start(port, tty, filp) == 0)
1009 mutex_lock(&port->mutex);
1010 cp = &info->channel;
1012 * Before we drop DTR, make sure the UART transmitter
1013 * has completely drained; this is especially
1014 * important if there is a transmit FIFO!
1016 timeout = (sGetTxCnt(cp) + 1) * HZ / info->cps;
1019 rp_wait_until_sent(tty, timeout);
1020 clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
1023 sDisInterrupts(cp, (TXINT_EN | MCINT_EN | RXINT_EN | SRCINT_EN | CHANINT_EN));
1025 sDisTxSoftFlowCtl(cp);
1033 rp_flush_buffer(tty);
1035 tty_ldisc_flush(tty);
1037 clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
1039 /* We can't yet use tty_port_close_end as the buffer handling in this
1040 driver is a bit different to the usual */
1042 if (port->blocked_open) {
1043 if (port->close_delay) {
1044 msleep_interruptible(jiffies_to_msecs(port->close_delay));
1046 wake_up_interruptible(&port->open_wait);
1048 if (info->xmit_buf) {
1049 free_page((unsigned long) info->xmit_buf);
1050 info->xmit_buf = NULL;
1053 spin_lock_irq(&port->lock);
1054 info->port.flags &= ~(ASYNC_INITIALIZED | ASYNC_CLOSING | ASYNC_NORMAL_ACTIVE);
1056 spin_unlock_irq(&port->lock);
1057 mutex_unlock(&port->mutex);
1058 tty_port_tty_set(port, NULL);
1060 wake_up_interruptible(&port->close_wait);
1061 complete_all(&info->close_wait);
1062 atomic_dec(&rp_num_ports_open);
1064 #ifdef ROCKET_DEBUG_OPEN
1065 printk(KERN_INFO "rocket mod-- = %d...\n",
1066 atomic_read(&rp_num_ports_open));
1067 printk(KERN_INFO "rp_close ttyR%d complete shutdown\n", info->line);
1072 static void rp_set_termios(struct tty_struct *tty,
1073 struct ktermios *old_termios)
1075 struct r_port *info = tty->driver_data;
1079 if (rocket_paranoia_check(info, "rp_set_termios"))
1082 cflag = tty->termios.c_cflag;
1085 * This driver doesn't support CS5 or CS6
1087 if (((cflag & CSIZE) == CS5) || ((cflag & CSIZE) == CS6))
1088 tty->termios.c_cflag =
1089 ((cflag & ~CSIZE) | (old_termios->c_cflag & CSIZE));
1091 tty->termios.c_cflag &= ~CMSPAR;
1093 configure_r_port(tty, info, old_termios);
1095 cp = &info->channel;
1097 /* Handle transition to B0 status */
1098 if ((old_termios->c_cflag & CBAUD) && !(tty->termios.c_cflag & CBAUD)) {
1103 /* Handle transition away from B0 status */
1104 if (!(old_termios->c_cflag & CBAUD) && (tty->termios.c_cflag & CBAUD)) {
1109 if ((old_termios->c_cflag & CRTSCTS) && !(tty->termios.c_cflag & CRTSCTS))
1113 static int rp_break(struct tty_struct *tty, int break_state)
1115 struct r_port *info = tty->driver_data;
1116 unsigned long flags;
1118 if (rocket_paranoia_check(info, "rp_break"))
1121 spin_lock_irqsave(&info->slock, flags);
1122 if (break_state == -1)
1123 sSendBreak(&info->channel);
1125 sClrBreak(&info->channel);
1126 spin_unlock_irqrestore(&info->slock, flags);
1131 * sGetChanRI used to be a macro in rocket_int.h. When the functionality for
1132 * the UPCI boards was added, it was decided to make this a function because
1133 * the macro was getting too complicated. All cases except the first one
1134 * (UPCIRingInd) are taken directly from the original macro.
1136 static int sGetChanRI(CHANNEL_T * ChP)
1138 CONTROLLER_t *CtlP = ChP->CtlP;
1139 int ChanNum = ChP->ChanNum;
1142 if (CtlP->UPCIRingInd)
1143 RingInd = !(sInB(CtlP->UPCIRingInd) & sBitMapSetTbl[ChanNum]);
1144 else if (CtlP->AltChanRingIndicator)
1145 RingInd = sInB((ByteIO_t) (ChP->ChanStat + 8)) & DSR_ACT;
1146 else if (CtlP->boardType == ROCKET_TYPE_PC104)
1147 RingInd = !(sInB(CtlP->AiopIO[3]) & sBitMapSetTbl[ChanNum]);
1152 /********************************************************************************************/
1153 /* Here are the routines used by rp_ioctl. These are all called from exception handlers. */
1156 * Returns the state of the serial modem control lines. These next 2 functions
1157 * are the way kernel versions > 2.5 handle modem control lines rather than IOCTLs.
1159 static int rp_tiocmget(struct tty_struct *tty)
1161 struct r_port *info = tty->driver_data;
1162 unsigned int control, result, ChanStatus;
1164 ChanStatus = sGetChanStatusLo(&info->channel);
1165 control = info->channel.TxControl[3];
1166 result = ((control & SET_RTS) ? TIOCM_RTS : 0) |
1167 ((control & SET_DTR) ? TIOCM_DTR : 0) |
1168 ((ChanStatus & CD_ACT) ? TIOCM_CAR : 0) |
1169 (sGetChanRI(&info->channel) ? TIOCM_RNG : 0) |
1170 ((ChanStatus & DSR_ACT) ? TIOCM_DSR : 0) |
1171 ((ChanStatus & CTS_ACT) ? TIOCM_CTS : 0);
1177 * Sets the modem control lines
1179 static int rp_tiocmset(struct tty_struct *tty,
1180 unsigned int set, unsigned int clear)
1182 struct r_port *info = tty->driver_data;
1184 if (set & TIOCM_RTS)
1185 info->channel.TxControl[3] |= SET_RTS;
1186 if (set & TIOCM_DTR)
1187 info->channel.TxControl[3] |= SET_DTR;
1188 if (clear & TIOCM_RTS)
1189 info->channel.TxControl[3] &= ~SET_RTS;
1190 if (clear & TIOCM_DTR)
1191 info->channel.TxControl[3] &= ~SET_DTR;
1193 out32(info->channel.IndexAddr, info->channel.TxControl);
1197 static int get_config(struct r_port *info, struct rocket_config __user *retinfo)
1199 struct rocket_config tmp;
1203 memset(&tmp, 0, sizeof (tmp));
1204 mutex_lock(&info->port.mutex);
1205 tmp.line = info->line;
1206 tmp.flags = info->flags;
1207 tmp.close_delay = info->port.close_delay;
1208 tmp.closing_wait = info->port.closing_wait;
1209 tmp.port = rcktpt_io_addr[(info->line >> 5) & 3];
1210 mutex_unlock(&info->port.mutex);
1212 if (copy_to_user(retinfo, &tmp, sizeof (*retinfo)))
1217 static int set_config(struct tty_struct *tty, struct r_port *info,
1218 struct rocket_config __user *new_info)
1220 struct rocket_config new_serial;
1222 if (copy_from_user(&new_serial, new_info, sizeof (new_serial)))
1225 mutex_lock(&info->port.mutex);
1226 if (!capable(CAP_SYS_ADMIN))
1228 if ((new_serial.flags & ~ROCKET_USR_MASK) != (info->flags & ~ROCKET_USR_MASK)) {
1229 mutex_unlock(&info->port.mutex);
1232 info->flags = ((info->flags & ~ROCKET_USR_MASK) | (new_serial.flags & ROCKET_USR_MASK));
1233 configure_r_port(tty, info, NULL);
1234 mutex_unlock(&info->port.mutex);
1238 info->flags = ((info->flags & ~ROCKET_FLAGS) | (new_serial.flags & ROCKET_FLAGS));
1239 info->port.close_delay = new_serial.close_delay;
1240 info->port.closing_wait = new_serial.closing_wait;
1242 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_HI)
1243 tty->alt_speed = 57600;
1244 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_VHI)
1245 tty->alt_speed = 115200;
1246 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_SHI)
1247 tty->alt_speed = 230400;
1248 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_WARP)
1249 tty->alt_speed = 460800;
1250 mutex_unlock(&info->port.mutex);
1252 configure_r_port(tty, info, NULL);
1257 * This function fills in a rocket_ports struct with information
1258 * about what boards/ports are in the system. This info is passed
1259 * to user space. See setrocket.c where the info is used to create
1260 * the /dev/ttyRx ports.
1262 static int get_ports(struct r_port *info, struct rocket_ports __user *retports)
1264 struct rocket_ports tmp;
1269 memset(&tmp, 0, sizeof (tmp));
1270 tmp.tty_major = rocket_driver->major;
1272 for (board = 0; board < 4; board++) {
1273 tmp.rocketModel[board].model = rocketModel[board].model;
1274 strcpy(tmp.rocketModel[board].modelString, rocketModel[board].modelString);
1275 tmp.rocketModel[board].numPorts = rocketModel[board].numPorts;
1276 tmp.rocketModel[board].loadrm2 = rocketModel[board].loadrm2;
1277 tmp.rocketModel[board].startingPortNumber = rocketModel[board].startingPortNumber;
1279 if (copy_to_user(retports, &tmp, sizeof (*retports)))
1284 static int reset_rm2(struct r_port *info, void __user *arg)
1288 if (!capable(CAP_SYS_ADMIN))
1291 if (copy_from_user(&reset, arg, sizeof (int)))
1296 if (rcktpt_type[info->board] != ROCKET_TYPE_MODEMII &&
1297 rcktpt_type[info->board] != ROCKET_TYPE_MODEMIII)
1300 if (info->ctlp->BusType == isISA)
1301 sModemReset(info->ctlp, info->chan, reset);
1303 sPCIModemReset(info->ctlp, info->chan, reset);
1308 static int get_version(struct r_port *info, struct rocket_version __user *retvers)
1310 if (copy_to_user(retvers, &driver_version, sizeof (*retvers)))
1315 /* IOCTL call handler into the driver */
1316 static int rp_ioctl(struct tty_struct *tty,
1317 unsigned int cmd, unsigned long arg)
1319 struct r_port *info = tty->driver_data;
1320 void __user *argp = (void __user *)arg;
1323 if (cmd != RCKP_GET_PORTS && rocket_paranoia_check(info, "rp_ioctl"))
1327 case RCKP_GET_STRUCT:
1328 if (copy_to_user(argp, info, sizeof (struct r_port)))
1331 case RCKP_GET_CONFIG:
1332 ret = get_config(info, argp);
1334 case RCKP_SET_CONFIG:
1335 ret = set_config(tty, info, argp);
1337 case RCKP_GET_PORTS:
1338 ret = get_ports(info, argp);
1340 case RCKP_RESET_RM2:
1341 ret = reset_rm2(info, argp);
1343 case RCKP_GET_VERSION:
1344 ret = get_version(info, argp);
1352 static void rp_send_xchar(struct tty_struct *tty, char ch)
1354 struct r_port *info = tty->driver_data;
1357 if (rocket_paranoia_check(info, "rp_send_xchar"))
1360 cp = &info->channel;
1362 sWriteTxPrioByte(cp, ch);
1364 sWriteTxByte(sGetTxRxDataIO(cp), ch);
1367 static void rp_throttle(struct tty_struct *tty)
1369 struct r_port *info = tty->driver_data;
1371 #ifdef ROCKET_DEBUG_THROTTLE
1372 printk(KERN_INFO "throttle %s: %d....\n", tty->name,
1373 tty->ldisc.chars_in_buffer(tty));
1376 if (rocket_paranoia_check(info, "rp_throttle"))
1380 rp_send_xchar(tty, STOP_CHAR(tty));
1382 sClrRTS(&info->channel);
1385 static void rp_unthrottle(struct tty_struct *tty)
1387 struct r_port *info = tty->driver_data;
1388 #ifdef ROCKET_DEBUG_THROTTLE
1389 printk(KERN_INFO "unthrottle %s: %d....\n", tty->name,
1390 tty->ldisc.chars_in_buffer(tty));
1393 if (rocket_paranoia_check(info, "rp_throttle"))
1397 rp_send_xchar(tty, START_CHAR(tty));
1399 sSetRTS(&info->channel);
1403 * ------------------------------------------------------------
1404 * rp_stop() and rp_start()
1406 * This routines are called before setting or resetting tty->stopped.
1407 * They enable or disable transmitter interrupts, as necessary.
1408 * ------------------------------------------------------------
1410 static void rp_stop(struct tty_struct *tty)
1412 struct r_port *info = tty->driver_data;
1414 #ifdef ROCKET_DEBUG_FLOW
1415 printk(KERN_INFO "stop %s: %d %d....\n", tty->name,
1416 info->xmit_cnt, info->xmit_fifo_room);
1419 if (rocket_paranoia_check(info, "rp_stop"))
1422 if (sGetTxCnt(&info->channel))
1423 sDisTransmit(&info->channel);
1426 static void rp_start(struct tty_struct *tty)
1428 struct r_port *info = tty->driver_data;
1430 #ifdef ROCKET_DEBUG_FLOW
1431 printk(KERN_INFO "start %s: %d %d....\n", tty->name,
1432 info->xmit_cnt, info->xmit_fifo_room);
1435 if (rocket_paranoia_check(info, "rp_stop"))
1438 sEnTransmit(&info->channel);
1439 set_bit((info->aiop * 8) + info->chan,
1440 (void *) &xmit_flags[info->board]);
1444 * rp_wait_until_sent() --- wait until the transmitter is empty
1446 static void rp_wait_until_sent(struct tty_struct *tty, int timeout)
1448 struct r_port *info = tty->driver_data;
1450 unsigned long orig_jiffies;
1451 int check_time, exit_time;
1454 if (rocket_paranoia_check(info, "rp_wait_until_sent"))
1457 cp = &info->channel;
1459 orig_jiffies = jiffies;
1460 #ifdef ROCKET_DEBUG_WAIT_UNTIL_SENT
1461 printk(KERN_INFO "In RP_wait_until_sent(%d) (jiff=%lu)...\n", timeout,
1463 printk(KERN_INFO "cps=%d...\n", info->cps);
1466 txcnt = sGetTxCnt(cp);
1468 if (sGetChanStatusLo(cp) & TXSHRMT)
1470 check_time = (HZ / info->cps) / 5;
1472 check_time = HZ * txcnt / info->cps;
1475 exit_time = orig_jiffies + timeout - jiffies;
1478 if (exit_time < check_time)
1479 check_time = exit_time;
1481 if (check_time == 0)
1483 #ifdef ROCKET_DEBUG_WAIT_UNTIL_SENT
1484 printk(KERN_INFO "txcnt = %d (jiff=%lu,check=%d)...\n", txcnt,
1485 jiffies, check_time);
1487 msleep_interruptible(jiffies_to_msecs(check_time));
1488 if (signal_pending(current))
1491 __set_current_state(TASK_RUNNING);
1492 #ifdef ROCKET_DEBUG_WAIT_UNTIL_SENT
1493 printk(KERN_INFO "txcnt = %d (jiff=%lu)...done\n", txcnt, jiffies);
1498 * rp_hangup() --- called by tty_hangup() when a hangup is signaled.
1500 static void rp_hangup(struct tty_struct *tty)
1503 struct r_port *info = tty->driver_data;
1504 unsigned long flags;
1506 if (rocket_paranoia_check(info, "rp_hangup"))
1509 #if (defined(ROCKET_DEBUG_OPEN) || defined(ROCKET_DEBUG_HANGUP))
1510 printk(KERN_INFO "rp_hangup of ttyR%d...\n", info->line);
1512 rp_flush_buffer(tty);
1513 spin_lock_irqsave(&info->port.lock, flags);
1514 if (info->port.flags & ASYNC_CLOSING) {
1515 spin_unlock_irqrestore(&info->port.lock, flags);
1518 if (info->port.count)
1519 atomic_dec(&rp_num_ports_open);
1520 clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
1521 spin_unlock_irqrestore(&info->port.lock, flags);
1523 tty_port_hangup(&info->port);
1525 cp = &info->channel;
1528 sDisInterrupts(cp, (TXINT_EN | MCINT_EN | RXINT_EN | SRCINT_EN | CHANINT_EN));
1530 sDisTxSoftFlowCtl(cp);
1532 clear_bit(ASYNCB_INITIALIZED, &info->port.flags);
1534 wake_up_interruptible(&info->port.open_wait);
1538 * Exception handler - write char routine. The RocketPort driver uses a
1539 * double-buffering strategy, with the twist that if the in-memory CPU
1540 * buffer is empty, and there's space in the transmit FIFO, the
1541 * writing routines will write directly to transmit FIFO.
1542 * Write buffer and counters protected by spinlocks
1544 static int rp_put_char(struct tty_struct *tty, unsigned char ch)
1546 struct r_port *info = tty->driver_data;
1548 unsigned long flags;
1550 if (rocket_paranoia_check(info, "rp_put_char"))
1554 * Grab the port write mutex, locking out other processes that try to
1555 * write to this port
1557 mutex_lock(&info->write_mtx);
1559 #ifdef ROCKET_DEBUG_WRITE
1560 printk(KERN_INFO "rp_put_char %c...\n", ch);
1563 spin_lock_irqsave(&info->slock, flags);
1564 cp = &info->channel;
1566 if (!tty->stopped && info->xmit_fifo_room == 0)
1567 info->xmit_fifo_room = TXFIFO_SIZE - sGetTxCnt(cp);
1569 if (tty->stopped || info->xmit_fifo_room == 0 || info->xmit_cnt != 0) {
1570 info->xmit_buf[info->xmit_head++] = ch;
1571 info->xmit_head &= XMIT_BUF_SIZE - 1;
1573 set_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
1575 sOutB(sGetTxRxDataIO(cp), ch);
1576 info->xmit_fifo_room--;
1578 spin_unlock_irqrestore(&info->slock, flags);
1579 mutex_unlock(&info->write_mtx);
1584 * Exception handler - write routine, called when user app writes to the device.
1585 * A per port write mutex is used to protect from another process writing to
1586 * this port at the same time. This other process could be running on the other CPU
1587 * or get control of the CPU if the copy_from_user() blocks due to a page fault (swapped out).
1588 * Spinlocks protect the info xmit members.
1590 static int rp_write(struct tty_struct *tty,
1591 const unsigned char *buf, int count)
1593 struct r_port *info = tty->driver_data;
1595 const unsigned char *b;
1597 unsigned long flags;
1599 if (count <= 0 || rocket_paranoia_check(info, "rp_write"))
1602 if (mutex_lock_interruptible(&info->write_mtx))
1603 return -ERESTARTSYS;
1605 #ifdef ROCKET_DEBUG_WRITE
1606 printk(KERN_INFO "rp_write %d chars...\n", count);
1608 cp = &info->channel;
1610 if (!tty->stopped && info->xmit_fifo_room < count)
1611 info->xmit_fifo_room = TXFIFO_SIZE - sGetTxCnt(cp);
1614 * If the write queue for the port is empty, and there is FIFO space, stuff bytes
1615 * into FIFO. Use the write queue for temp storage.
1617 if (!tty->stopped && info->xmit_cnt == 0 && info->xmit_fifo_room > 0) {
1618 c = min(count, info->xmit_fifo_room);
1621 /* Push data into FIFO, 2 bytes at a time */
1622 sOutStrW(sGetTxRxDataIO(cp), (unsigned short *) b, c / 2);
1624 /* If there is a byte remaining, write it */
1626 sOutB(sGetTxRxDataIO(cp), b[c - 1]);
1632 spin_lock_irqsave(&info->slock, flags);
1633 info->xmit_fifo_room -= c;
1634 spin_unlock_irqrestore(&info->slock, flags);
1637 /* If count is zero, we wrote it all and are done */
1641 /* Write remaining data into the port's xmit_buf */
1644 if (!test_bit(ASYNCB_NORMAL_ACTIVE, &info->port.flags))
1646 c = min(count, XMIT_BUF_SIZE - info->xmit_cnt - 1);
1647 c = min(c, XMIT_BUF_SIZE - info->xmit_head);
1652 memcpy(info->xmit_buf + info->xmit_head, b, c);
1654 spin_lock_irqsave(&info->slock, flags);
1656 (info->xmit_head + c) & (XMIT_BUF_SIZE - 1);
1657 info->xmit_cnt += c;
1658 spin_unlock_irqrestore(&info->slock, flags);
1665 if ((retval > 0) && !tty->stopped)
1666 set_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
1669 if (info->xmit_cnt < WAKEUP_CHARS) {
1671 #ifdef ROCKETPORT_HAVE_POLL_WAIT
1672 wake_up_interruptible(&tty->poll_wait);
1675 mutex_unlock(&info->write_mtx);
1680 * Return the number of characters that can be sent. We estimate
1681 * only using the in-memory transmit buffer only, and ignore the
1682 * potential space in the transmit FIFO.
1684 static int rp_write_room(struct tty_struct *tty)
1686 struct r_port *info = tty->driver_data;
1689 if (rocket_paranoia_check(info, "rp_write_room"))
1692 ret = XMIT_BUF_SIZE - info->xmit_cnt - 1;
1695 #ifdef ROCKET_DEBUG_WRITE
1696 printk(KERN_INFO "rp_write_room returns %d...\n", ret);
1702 * Return the number of characters in the buffer. Again, this only
1703 * counts those characters in the in-memory transmit buffer.
1705 static int rp_chars_in_buffer(struct tty_struct *tty)
1707 struct r_port *info = tty->driver_data;
1709 if (rocket_paranoia_check(info, "rp_chars_in_buffer"))
1712 #ifdef ROCKET_DEBUG_WRITE
1713 printk(KERN_INFO "rp_chars_in_buffer returns %d...\n", info->xmit_cnt);
1715 return info->xmit_cnt;
1719 * Flushes the TX fifo for a port, deletes data in the xmit_buf stored in the
1720 * r_port struct for the port. Note that spinlock are used to protect info members,
1721 * do not call this function if the spinlock is already held.
1723 static void rp_flush_buffer(struct tty_struct *tty)
1725 struct r_port *info = tty->driver_data;
1727 unsigned long flags;
1729 if (rocket_paranoia_check(info, "rp_flush_buffer"))
1732 spin_lock_irqsave(&info->slock, flags);
1733 info->xmit_cnt = info->xmit_head = info->xmit_tail = 0;
1734 spin_unlock_irqrestore(&info->slock, flags);
1736 #ifdef ROCKETPORT_HAVE_POLL_WAIT
1737 wake_up_interruptible(&tty->poll_wait);
1741 cp = &info->channel;
1747 static DEFINE_PCI_DEVICE_TABLE(rocket_pci_ids) = {
1748 { PCI_DEVICE(PCI_VENDOR_ID_RP, PCI_DEVICE_ID_RP4QUAD) },
1749 { PCI_DEVICE(PCI_VENDOR_ID_RP, PCI_DEVICE_ID_RP8OCTA) },
1750 { PCI_DEVICE(PCI_VENDOR_ID_RP, PCI_DEVICE_ID_URP8OCTA) },
1751 { PCI_DEVICE(PCI_VENDOR_ID_RP, PCI_DEVICE_ID_RP8INTF) },
1752 { PCI_DEVICE(PCI_VENDOR_ID_RP, PCI_DEVICE_ID_URP8INTF) },
1753 { PCI_DEVICE(PCI_VENDOR_ID_RP, PCI_DEVICE_ID_RP8J) },
1754 { PCI_DEVICE(PCI_VENDOR_ID_RP, PCI_DEVICE_ID_RP4J) },
1755 { PCI_DEVICE(PCI_VENDOR_ID_RP, PCI_DEVICE_ID_RP8SNI) },
1756 { PCI_DEVICE(PCI_VENDOR_ID_RP, PCI_DEVICE_ID_RP16SNI) },
1757 { PCI_DEVICE(PCI_VENDOR_ID_RP, PCI_DEVICE_ID_RP16INTF) },
1758 { PCI_DEVICE(PCI_VENDOR_ID_RP, PCI_DEVICE_ID_URP16INTF) },
1759 { PCI_DEVICE(PCI_VENDOR_ID_RP, PCI_DEVICE_ID_CRP16INTF) },
1760 { PCI_DEVICE(PCI_VENDOR_ID_RP, PCI_DEVICE_ID_RP32INTF) },
1761 { PCI_DEVICE(PCI_VENDOR_ID_RP, PCI_DEVICE_ID_URP32INTF) },
1762 { PCI_DEVICE(PCI_VENDOR_ID_RP, PCI_DEVICE_ID_RPP4) },
1763 { PCI_DEVICE(PCI_VENDOR_ID_RP, PCI_DEVICE_ID_RPP8) },
1764 { PCI_DEVICE(PCI_VENDOR_ID_RP, PCI_DEVICE_ID_RP2_232) },
1765 { PCI_DEVICE(PCI_VENDOR_ID_RP, PCI_DEVICE_ID_RP2_422) },
1766 { PCI_DEVICE(PCI_VENDOR_ID_RP, PCI_DEVICE_ID_RP6M) },
1767 { PCI_DEVICE(PCI_VENDOR_ID_RP, PCI_DEVICE_ID_RP4M) },
1768 { PCI_DEVICE(PCI_VENDOR_ID_RP, PCI_DEVICE_ID_UPCI_RM3_8PORT) },
1769 { PCI_DEVICE(PCI_VENDOR_ID_RP, PCI_DEVICE_ID_UPCI_RM3_4PORT) },
1772 MODULE_DEVICE_TABLE(pci, rocket_pci_ids);
1774 /* Resets the speaker controller on RocketModem II and III devices */
1775 static void rmSpeakerReset(CONTROLLER_T * CtlP, unsigned long model)
1779 /* RocketModem II speaker control is at the 8th port location of offset 0x40 */
1780 if ((model == MODEL_RP4M) || (model == MODEL_RP6M)) {
1781 addr = CtlP->AiopIO[0] + 0x4F;
1785 /* RocketModem III speaker control is at the 1st port location of offset 0x80 */
1786 if ((model == MODEL_UPCI_RM3_8PORT)
1787 || (model == MODEL_UPCI_RM3_4PORT)) {
1788 addr = CtlP->AiopIO[0] + 0x88;
1793 /***************************************************************************
1794 Function: sPCIInitController
1795 Purpose: Initialization of controller global registers and controller
1797 Call: sPCIInitController(CtlP,CtlNum,AiopIOList,AiopIOListSize,
1798 IRQNum,Frequency,PeriodicOnly)
1799 CONTROLLER_T *CtlP; Ptr to controller structure
1800 int CtlNum; Controller number
1801 ByteIO_t *AiopIOList; List of I/O addresses for each AIOP.
1802 This list must be in the order the AIOPs will be found on the
1803 controller. Once an AIOP in the list is not found, it is
1804 assumed that there are no more AIOPs on the controller.
1805 int AiopIOListSize; Number of addresses in AiopIOList
1806 int IRQNum; Interrupt Request number. Can be any of the following:
1807 0: Disable global interrupts
1816 Byte_t Frequency: A flag identifying the frequency
1817 of the periodic interrupt, can be any one of the following:
1818 FREQ_DIS - periodic interrupt disabled
1819 FREQ_137HZ - 137 Hertz
1820 FREQ_69HZ - 69 Hertz
1821 FREQ_34HZ - 34 Hertz
1822 FREQ_17HZ - 17 Hertz
1825 If IRQNum is set to 0 the Frequency parameter is
1826 overidden, it is forced to a value of FREQ_DIS.
1827 int PeriodicOnly: 1 if all interrupts except the periodic
1828 interrupt are to be blocked.
1829 0 is both the periodic interrupt and
1830 other channel interrupts are allowed.
1831 If IRQNum is set to 0 the PeriodicOnly parameter is
1832 overidden, it is forced to a value of 0.
1833 Return: int: Number of AIOPs on the controller, or CTLID_NULL if controller
1834 initialization failed.
1837 If periodic interrupts are to be disabled but AIOP interrupts
1838 are allowed, set Frequency to FREQ_DIS and PeriodicOnly to 0.
1840 If interrupts are to be completely disabled set IRQNum to 0.
1842 Setting Frequency to FREQ_DIS and PeriodicOnly to 1 is an
1843 invalid combination.
1845 This function performs initialization of global interrupt modes,
1846 but it does not actually enable global interrupts. To enable
1847 and disable global interrupts use functions sEnGlobalInt() and
1848 sDisGlobalInt(). Enabling of global interrupts is normally not
1849 done until all other initializations are complete.
1851 Even if interrupts are globally enabled, they must also be
1852 individually enabled for each channel that is to generate
1855 Warnings: No range checking on any of the parameters is done.
1857 No context switches are allowed while executing this function.
1859 After this function all AIOPs on the controller are disabled,
1860 they can be enabled with sEnAiop().
1862 static int sPCIInitController(CONTROLLER_T * CtlP, int CtlNum,
1863 ByteIO_t * AiopIOList, int AiopIOListSize,
1864 WordIO_t ConfigIO, int IRQNum, Byte_t Frequency,
1865 int PeriodicOnly, int altChanRingIndicator,
1871 CtlP->AltChanRingIndicator = altChanRingIndicator;
1872 CtlP->UPCIRingInd = UPCIRingInd;
1873 CtlP->CtlNum = CtlNum;
1874 CtlP->CtlID = CTLID_0001; /* controller release 1 */
1875 CtlP->BusType = isPCI; /* controller release 1 */
1879 CtlP->PCIIO = ConfigIO + _PCI_9030_INT_CTRL;
1880 CtlP->PCIIO2 = ConfigIO + _PCI_9030_GPIO_CTRL;
1881 CtlP->AiopIntrBits = upci_aiop_intr_bits;
1885 (WordIO_t) ((ByteIO_t) AiopIOList[0] + _PCI_INT_FUNC);
1886 CtlP->AiopIntrBits = aiop_intr_bits;
1889 sPCIControllerEOI(CtlP); /* clear EOI if warm init */
1892 for (i = 0; i < AiopIOListSize; i++) {
1894 CtlP->AiopIO[i] = (WordIO_t) io;
1895 CtlP->AiopIntChanIO[i] = io + _INT_CHAN;
1897 CtlP->AiopID[i] = sReadAiopID(io); /* read AIOP ID */
1898 if (CtlP->AiopID[i] == AIOPID_NULL) /* if AIOP does not exist */
1899 break; /* done looking for AIOPs */
1901 CtlP->AiopNumChan[i] = sReadAiopNumChan((WordIO_t) io); /* num channels in AIOP */
1902 sOutW((WordIO_t) io + _INDX_ADDR, _CLK_PRE); /* clock prescaler */
1903 sOutB(io + _INDX_DATA, sClockPrescale);
1904 CtlP->NumAiop++; /* bump count of AIOPs */
1907 if (CtlP->NumAiop == 0)
1910 return (CtlP->NumAiop);
1914 * Called when a PCI card is found. Retrieves and stores model information,
1915 * init's aiopic and serial port hardware.
1916 * Inputs: i is the board number (0-n)
1918 static __init int register_PCI(int i, struct pci_dev *dev)
1920 int num_aiops, aiop, max_num_aiops, num_chan, chan;
1921 unsigned int aiopio[MAX_AIOPS_PER_BOARD];
1925 int altChanRingIndicator = 0;
1926 int ports_per_aiop = 8;
1927 WordIO_t ConfigIO = 0;
1928 ByteIO_t UPCIRingInd = 0;
1930 if (!dev || !pci_match_id(rocket_pci_ids, dev) ||
1931 pci_enable_device(dev))
1934 rcktpt_io_addr[i] = pci_resource_start(dev, 0);
1936 rcktpt_type[i] = ROCKET_TYPE_NORMAL;
1937 rocketModel[i].loadrm2 = 0;
1938 rocketModel[i].startingPortNumber = nextLineNumber;
1940 /* Depending on the model, set up some config variables */
1941 switch (dev->device) {
1942 case PCI_DEVICE_ID_RP4QUAD:
1945 rocketModel[i].model = MODEL_RP4QUAD;
1946 strcpy(rocketModel[i].modelString, "RocketPort 4 port w/quad cable");
1947 rocketModel[i].numPorts = 4;
1949 case PCI_DEVICE_ID_RP8OCTA:
1951 rocketModel[i].model = MODEL_RP8OCTA;
1952 strcpy(rocketModel[i].modelString, "RocketPort 8 port w/octa cable");
1953 rocketModel[i].numPorts = 8;
1955 case PCI_DEVICE_ID_URP8OCTA:
1957 rocketModel[i].model = MODEL_UPCI_RP8OCTA;
1958 strcpy(rocketModel[i].modelString, "RocketPort UPCI 8 port w/octa cable");
1959 rocketModel[i].numPorts = 8;
1961 case PCI_DEVICE_ID_RP8INTF:
1963 rocketModel[i].model = MODEL_RP8INTF;
1964 strcpy(rocketModel[i].modelString, "RocketPort 8 port w/external I/F");
1965 rocketModel[i].numPorts = 8;
1967 case PCI_DEVICE_ID_URP8INTF:
1969 rocketModel[i].model = MODEL_UPCI_RP8INTF;
1970 strcpy(rocketModel[i].modelString, "RocketPort UPCI 8 port w/external I/F");
1971 rocketModel[i].numPorts = 8;
1973 case PCI_DEVICE_ID_RP8J:
1975 rocketModel[i].model = MODEL_RP8J;
1976 strcpy(rocketModel[i].modelString, "RocketPort 8 port w/RJ11 connectors");
1977 rocketModel[i].numPorts = 8;
1979 case PCI_DEVICE_ID_RP4J:
1982 rocketModel[i].model = MODEL_RP4J;
1983 strcpy(rocketModel[i].modelString, "RocketPort 4 port w/RJ45 connectors");
1984 rocketModel[i].numPorts = 4;
1986 case PCI_DEVICE_ID_RP8SNI:
1988 rocketModel[i].model = MODEL_RP8SNI;
1989 strcpy(rocketModel[i].modelString, "RocketPort 8 port w/ custom DB78");
1990 rocketModel[i].numPorts = 8;
1992 case PCI_DEVICE_ID_RP16SNI:
1994 rocketModel[i].model = MODEL_RP16SNI;
1995 strcpy(rocketModel[i].modelString, "RocketPort 16 port w/ custom DB78");
1996 rocketModel[i].numPorts = 16;
1998 case PCI_DEVICE_ID_RP16INTF:
2000 rocketModel[i].model = MODEL_RP16INTF;
2001 strcpy(rocketModel[i].modelString, "RocketPort 16 port w/external I/F");
2002 rocketModel[i].numPorts = 16;
2004 case PCI_DEVICE_ID_URP16INTF:
2006 rocketModel[i].model = MODEL_UPCI_RP16INTF;
2007 strcpy(rocketModel[i].modelString, "RocketPort UPCI 16 port w/external I/F");
2008 rocketModel[i].numPorts = 16;
2010 case PCI_DEVICE_ID_CRP16INTF:
2012 rocketModel[i].model = MODEL_CPCI_RP16INTF;
2013 strcpy(rocketModel[i].modelString, "RocketPort Compact PCI 16 port w/external I/F");
2014 rocketModel[i].numPorts = 16;
2016 case PCI_DEVICE_ID_RP32INTF:
2018 rocketModel[i].model = MODEL_RP32INTF;
2019 strcpy(rocketModel[i].modelString, "RocketPort 32 port w/external I/F");
2020 rocketModel[i].numPorts = 32;
2022 case PCI_DEVICE_ID_URP32INTF:
2024 rocketModel[i].model = MODEL_UPCI_RP32INTF;
2025 strcpy(rocketModel[i].modelString, "RocketPort UPCI 32 port w/external I/F");
2026 rocketModel[i].numPorts = 32;
2028 case PCI_DEVICE_ID_RPP4:
2031 altChanRingIndicator++;
2033 rocketModel[i].model = MODEL_RPP4;
2034 strcpy(rocketModel[i].modelString, "RocketPort Plus 4 port");
2035 rocketModel[i].numPorts = 4;
2037 case PCI_DEVICE_ID_RPP8:
2040 altChanRingIndicator++;
2042 rocketModel[i].model = MODEL_RPP8;
2043 strcpy(rocketModel[i].modelString, "RocketPort Plus 8 port");
2044 rocketModel[i].numPorts = 8;
2046 case PCI_DEVICE_ID_RP2_232:
2049 altChanRingIndicator++;
2051 rocketModel[i].model = MODEL_RP2_232;
2052 strcpy(rocketModel[i].modelString, "RocketPort Plus 2 port RS232");
2053 rocketModel[i].numPorts = 2;
2055 case PCI_DEVICE_ID_RP2_422:
2058 altChanRingIndicator++;
2060 rocketModel[i].model = MODEL_RP2_422;
2061 strcpy(rocketModel[i].modelString, "RocketPort Plus 2 port RS422");
2062 rocketModel[i].numPorts = 2;
2064 case PCI_DEVICE_ID_RP6M:
2069 /* If revision is 1, the rocketmodem flash must be loaded.
2070 * If it is 2 it is a "socketed" version. */
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_RP6M;
2079 strcpy(rocketModel[i].modelString, "RocketModem 6 port");
2080 rocketModel[i].numPorts = 6;
2082 case PCI_DEVICE_ID_RP4M:
2085 if (dev->revision == 1) {
2086 rcktpt_type[i] = ROCKET_TYPE_MODEMII;
2087 rocketModel[i].loadrm2 = 1;
2089 rcktpt_type[i] = ROCKET_TYPE_MODEM;
2092 rocketModel[i].model = MODEL_RP4M;
2093 strcpy(rocketModel[i].modelString, "RocketModem 4 port");
2094 rocketModel[i].numPorts = 4;
2102 * Check for UPCI boards.
2105 switch (dev->device) {
2106 case PCI_DEVICE_ID_URP32INTF:
2107 case PCI_DEVICE_ID_URP8INTF:
2108 case PCI_DEVICE_ID_URP16INTF:
2109 case PCI_DEVICE_ID_CRP16INTF:
2110 case PCI_DEVICE_ID_URP8OCTA:
2111 rcktpt_io_addr[i] = pci_resource_start(dev, 2);
2112 ConfigIO = pci_resource_start(dev, 1);
2113 if (dev->device == PCI_DEVICE_ID_URP8OCTA) {
2114 UPCIRingInd = rcktpt_io_addr[i] + _PCI_9030_RING_IND;
2117 * Check for octa or quad cable.
2120 (sInW(ConfigIO + _PCI_9030_GPIO_CTRL) &
2121 PCI_GPIO_CTRL_8PORT)) {
2123 rocketModel[i].numPorts = 4;
2127 case PCI_DEVICE_ID_UPCI_RM3_8PORT:
2129 rocketModel[i].model = MODEL_UPCI_RM3_8PORT;
2130 strcpy(rocketModel[i].modelString, "RocketModem III 8 port");
2131 rocketModel[i].numPorts = 8;
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;
2137 case PCI_DEVICE_ID_UPCI_RM3_4PORT:
2139 rocketModel[i].model = MODEL_UPCI_RM3_4PORT;
2140 strcpy(rocketModel[i].modelString, "RocketModem III 4 port");
2141 rocketModel[i].numPorts = 4;
2142 rcktpt_io_addr[i] = pci_resource_start(dev, 2);
2143 UPCIRingInd = rcktpt_io_addr[i] + _PCI_9030_RING_IND;
2144 ConfigIO = pci_resource_start(dev, 1);
2145 rcktpt_type[i] = ROCKET_TYPE_MODEMIII;
2152 sClockPrescale = 0x12; /* mod 2 (divide by 3) */
2153 rp_baud_base[i] = 921600;
2156 * If support_low_speed is set, use the slow clock
2157 * prescale, which supports 50 bps
2159 if (support_low_speed) {
2160 /* mod 9 (divide by 10) prescale */
2161 sClockPrescale = 0x19;
2162 rp_baud_base[i] = 230400;
2164 /* mod 4 (divide by 5) prescale */
2165 sClockPrescale = 0x14;
2166 rp_baud_base[i] = 460800;
2170 for (aiop = 0; aiop < max_num_aiops; aiop++)
2171 aiopio[aiop] = rcktpt_io_addr[i] + (aiop * 0x40);
2172 ctlp = sCtlNumToCtlPtr(i);
2173 num_aiops = sPCIInitController(ctlp, i, aiopio, max_num_aiops, ConfigIO, 0, FREQ_DIS, 0, altChanRingIndicator, UPCIRingInd);
2174 for (aiop = 0; aiop < max_num_aiops; aiop++)
2175 ctlp->AiopNumChan[aiop] = ports_per_aiop;
2177 dev_info(&dev->dev, "comtrol PCI controller #%d found at "
2178 "address %04lx, %d AIOP(s) (%s), creating ttyR%d - %ld\n",
2179 i, rcktpt_io_addr[i], num_aiops, rocketModel[i].modelString,
2180 rocketModel[i].startingPortNumber,
2181 rocketModel[i].startingPortNumber + rocketModel[i].numPorts-1);
2183 if (num_aiops <= 0) {
2184 rcktpt_io_addr[i] = 0;
2189 /* Reset the AIOPIC, init the serial ports */
2190 for (aiop = 0; aiop < num_aiops; aiop++) {
2191 sResetAiopByNum(ctlp, aiop);
2192 num_chan = ports_per_aiop;
2193 for (chan = 0; chan < num_chan; chan++)
2194 init_r_port(i, aiop, chan, dev);
2197 /* Rocket modems must be reset */
2198 if ((rcktpt_type[i] == ROCKET_TYPE_MODEM) ||
2199 (rcktpt_type[i] == ROCKET_TYPE_MODEMII) ||
2200 (rcktpt_type[i] == ROCKET_TYPE_MODEMIII)) {
2201 num_chan = ports_per_aiop;
2202 for (chan = 0; chan < num_chan; chan++)
2203 sPCIModemReset(ctlp, chan, 1);
2205 for (chan = 0; chan < num_chan; chan++)
2206 sPCIModemReset(ctlp, chan, 0);
2208 rmSpeakerReset(ctlp, rocketModel[i].model);
2214 * Probes for PCI cards, inits them if found
2215 * Input: board_found = number of ISA boards already found, or the
2216 * starting board number
2217 * Returns: Number of PCI boards found
2219 static int __init init_PCI(int boards_found)
2221 struct pci_dev *dev = NULL;
2224 /* Work through the PCI device list, pulling out ours */
2225 while ((dev = pci_get_device(PCI_VENDOR_ID_RP, PCI_ANY_ID, dev))) {
2226 if (register_PCI(count + boards_found, dev))
2232 #endif /* CONFIG_PCI */
2235 * Probes for ISA cards
2236 * Input: i = the board number to look for
2237 * Returns: 1 if board found, 0 else
2239 static int __init init_ISA(int i)
2241 int num_aiops, num_chan = 0, total_num_chan = 0;
2243 unsigned int aiopio[MAX_AIOPS_PER_BOARD];
2247 /* If io_addr is zero, no board configured */
2248 if (rcktpt_io_addr[i] == 0)
2251 /* Reserve the IO region */
2252 if (!request_region(rcktpt_io_addr[i], 64, "Comtrol RocketPort")) {
2253 printk(KERN_ERR "Unable to reserve IO region for configured "
2254 "ISA RocketPort at address 0x%lx, board not "
2255 "installed...\n", rcktpt_io_addr[i]);
2256 rcktpt_io_addr[i] = 0;
2260 ctlp = sCtlNumToCtlPtr(i);
2262 ctlp->boardType = rcktpt_type[i];
2264 switch (rcktpt_type[i]) {
2265 case ROCKET_TYPE_PC104:
2266 type_string = "(PC104)";
2268 case ROCKET_TYPE_MODEM:
2269 type_string = "(RocketModem)";
2271 case ROCKET_TYPE_MODEMII:
2272 type_string = "(RocketModem II)";
2280 * If support_low_speed is set, use the slow clock prescale,
2281 * which supports 50 bps
2283 if (support_low_speed) {
2284 sClockPrescale = 0x19; /* mod 9 (divide by 10) prescale */
2285 rp_baud_base[i] = 230400;
2287 sClockPrescale = 0x14; /* mod 4 (divide by 5) prescale */
2288 rp_baud_base[i] = 460800;
2291 for (aiop = 0; aiop < MAX_AIOPS_PER_BOARD; aiop++)
2292 aiopio[aiop] = rcktpt_io_addr[i] + (aiop * 0x400);
2294 num_aiops = sInitController(ctlp, i, controller + (i * 0x400), aiopio, MAX_AIOPS_PER_BOARD, 0, FREQ_DIS, 0);
2296 if (ctlp->boardType == ROCKET_TYPE_PC104) {
2297 sEnAiop(ctlp, 2); /* only one AIOPIC, but these */
2298 sEnAiop(ctlp, 3); /* CSels used for other stuff */
2301 /* If something went wrong initing the AIOP's release the ISA IO memory */
2302 if (num_aiops <= 0) {
2303 release_region(rcktpt_io_addr[i], 64);
2304 rcktpt_io_addr[i] = 0;
2308 rocketModel[i].startingPortNumber = nextLineNumber;
2310 for (aiop = 0; aiop < num_aiops; aiop++) {
2311 sResetAiopByNum(ctlp, aiop);
2312 sEnAiop(ctlp, aiop);
2313 num_chan = sGetAiopNumChan(ctlp, aiop);
2314 total_num_chan += num_chan;
2315 for (chan = 0; chan < num_chan; chan++)
2316 init_r_port(i, aiop, chan, NULL);
2319 if ((rcktpt_type[i] == ROCKET_TYPE_MODEM) || (rcktpt_type[i] == ROCKET_TYPE_MODEMII)) {
2320 num_chan = sGetAiopNumChan(ctlp, 0);
2321 total_num_chan = num_chan;
2322 for (chan = 0; chan < num_chan; chan++)
2323 sModemReset(ctlp, chan, 1);
2325 for (chan = 0; chan < num_chan; chan++)
2326 sModemReset(ctlp, chan, 0);
2328 strcpy(rocketModel[i].modelString, "RocketModem ISA");
2330 strcpy(rocketModel[i].modelString, "RocketPort ISA");
2332 rocketModel[i].numPorts = total_num_chan;
2333 rocketModel[i].model = MODEL_ISA;
2335 printk(KERN_INFO "RocketPort ISA card #%d found at 0x%lx - %d AIOPs %s\n",
2336 i, rcktpt_io_addr[i], num_aiops, type_string);
2338 printk(KERN_INFO "Installing %s, creating /dev/ttyR%d - %ld\n",
2339 rocketModel[i].modelString,
2340 rocketModel[i].startingPortNumber,
2341 rocketModel[i].startingPortNumber +
2342 rocketModel[i].numPorts - 1);
2347 static const struct tty_operations rocket_ops = {
2351 .put_char = rp_put_char,
2352 .write_room = rp_write_room,
2353 .chars_in_buffer = rp_chars_in_buffer,
2354 .flush_buffer = rp_flush_buffer,
2356 .throttle = rp_throttle,
2357 .unthrottle = rp_unthrottle,
2358 .set_termios = rp_set_termios,
2361 .hangup = rp_hangup,
2362 .break_ctl = rp_break,
2363 .send_xchar = rp_send_xchar,
2364 .wait_until_sent = rp_wait_until_sent,
2365 .tiocmget = rp_tiocmget,
2366 .tiocmset = rp_tiocmset,
2369 static const struct tty_port_operations rocket_port_ops = {
2370 .carrier_raised = carrier_raised,
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->flags = TTY_DRIVER_DYNAMIC_DEV;
2429 rocket_driver->name = "ttyR";
2430 rocket_driver->driver_name = "Comtrol RocketPort";
2431 rocket_driver->major = TTY_ROCKET_MAJOR;
2432 rocket_driver->minor_start = 0;
2433 rocket_driver->type = TTY_DRIVER_TYPE_SERIAL;
2434 rocket_driver->subtype = SERIAL_TYPE_NORMAL;
2435 rocket_driver->init_termios = tty_std_termios;
2436 rocket_driver->init_termios.c_cflag =
2437 B9600 | CS8 | CREAD | HUPCL | CLOCAL;
2438 rocket_driver->init_termios.c_ispeed = 9600;
2439 rocket_driver->init_termios.c_ospeed = 9600;
2440 #ifdef ROCKET_SOFT_FLOW
2441 rocket_driver->flags |= TTY_DRIVER_REAL_RAW;
2443 tty_set_operations(rocket_driver, &rocket_ops);
2445 ret = tty_register_driver(rocket_driver);
2447 printk(KERN_ERR "Couldn't install tty RocketPort driver\n");
2448 goto err_controller;
2451 #ifdef ROCKET_DEBUG_OPEN
2452 printk(KERN_INFO "RocketPort driver is major %d\n", rocket_driver.major);
2456 * OK, let's probe each of the controllers looking for boards. Any boards found
2457 * will be initialized here.
2459 isa_boards_found = 0;
2460 pci_boards_found = 0;
2462 for (i = 0; i < NUM_BOARDS; i++) {
2468 if (isa_boards_found < NUM_BOARDS)
2469 pci_boards_found = init_PCI(isa_boards_found);
2472 max_board = pci_boards_found + isa_boards_found;
2474 if (max_board == 0) {
2475 printk(KERN_ERR "No rocketport ports found; unloading driver\n");
2482 tty_unregister_driver(rocket_driver);
2485 release_region(controller, 4);
2487 put_tty_driver(rocket_driver);
2493 static void rp_cleanup_module(void)
2498 del_timer_sync(&rocket_timer);
2500 retval = tty_unregister_driver(rocket_driver);
2502 printk(KERN_ERR "Error %d while trying to unregister "
2503 "rocketport driver\n", -retval);
2505 for (i = 0; i < MAX_RP_PORTS; i++)
2507 tty_unregister_device(rocket_driver, i);
2508 tty_port_destroy(&rp_table[i]->port);
2512 put_tty_driver(rocket_driver);
2514 for (i = 0; i < NUM_BOARDS; i++) {
2515 if (rcktpt_io_addr[i] <= 0 || is_PCI[i])
2517 release_region(rcktpt_io_addr[i], 64);
2520 release_region(controller, 4);
2523 /***************************************************************************
2524 Function: sInitController
2525 Purpose: Initialization of controller global registers and controller
2527 Call: sInitController(CtlP,CtlNum,MudbacIO,AiopIOList,AiopIOListSize,
2528 IRQNum,Frequency,PeriodicOnly)
2529 CONTROLLER_T *CtlP; Ptr to controller structure
2530 int CtlNum; Controller number
2531 ByteIO_t MudbacIO; Mudbac base I/O address.
2532 ByteIO_t *AiopIOList; List of I/O addresses for each AIOP.
2533 This list must be in the order the AIOPs will be found on the
2534 controller. Once an AIOP in the list is not found, it is
2535 assumed that there are no more AIOPs on the controller.
2536 int AiopIOListSize; Number of addresses in AiopIOList
2537 int IRQNum; Interrupt Request number. Can be any of the following:
2538 0: Disable global interrupts
2547 Byte_t Frequency: A flag identifying the frequency
2548 of the periodic interrupt, can be any one of the following:
2549 FREQ_DIS - periodic interrupt disabled
2550 FREQ_137HZ - 137 Hertz
2551 FREQ_69HZ - 69 Hertz
2552 FREQ_34HZ - 34 Hertz
2553 FREQ_17HZ - 17 Hertz
2556 If IRQNum is set to 0 the Frequency parameter is
2557 overidden, it is forced to a value of FREQ_DIS.
2558 int PeriodicOnly: 1 if all interrupts except the periodic
2559 interrupt are to be blocked.
2560 0 is both the periodic interrupt and
2561 other channel interrupts are allowed.
2562 If IRQNum is set to 0 the PeriodicOnly parameter is
2563 overidden, it is forced to a value of 0.
2564 Return: int: Number of AIOPs on the controller, or CTLID_NULL if controller
2565 initialization failed.
2568 If periodic interrupts are to be disabled but AIOP interrupts
2569 are allowed, set Frequency to FREQ_DIS and PeriodicOnly to 0.
2571 If interrupts are to be completely disabled set IRQNum to 0.
2573 Setting Frequency to FREQ_DIS and PeriodicOnly to 1 is an
2574 invalid combination.
2576 This function performs initialization of global interrupt modes,
2577 but it does not actually enable global interrupts. To enable
2578 and disable global interrupts use functions sEnGlobalInt() and
2579 sDisGlobalInt(). Enabling of global interrupts is normally not
2580 done until all other initializations are complete.
2582 Even if interrupts are globally enabled, they must also be
2583 individually enabled for each channel that is to generate
2586 Warnings: No range checking on any of the parameters is done.
2588 No context switches are allowed while executing this function.
2590 After this function all AIOPs on the controller are disabled,
2591 they can be enabled with sEnAiop().
2593 static int sInitController(CONTROLLER_T * CtlP, int CtlNum, ByteIO_t MudbacIO,
2594 ByteIO_t * AiopIOList, int AiopIOListSize,
2595 int IRQNum, Byte_t Frequency, int PeriodicOnly)
2601 CtlP->AiopIntrBits = aiop_intr_bits;
2602 CtlP->AltChanRingIndicator = 0;
2603 CtlP->CtlNum = CtlNum;
2604 CtlP->CtlID = CTLID_0001; /* controller release 1 */
2605 CtlP->BusType = isISA;
2606 CtlP->MBaseIO = MudbacIO;
2607 CtlP->MReg1IO = MudbacIO + 1;
2608 CtlP->MReg2IO = MudbacIO + 2;
2609 CtlP->MReg3IO = MudbacIO + 3;
2611 CtlP->MReg2 = 0; /* interrupt disable */
2612 CtlP->MReg3 = 0; /* no periodic interrupts */
2614 if (sIRQMap[IRQNum] == 0) { /* interrupts globally disabled */
2615 CtlP->MReg2 = 0; /* interrupt disable */
2616 CtlP->MReg3 = 0; /* no periodic interrupts */
2618 CtlP->MReg2 = sIRQMap[IRQNum]; /* set IRQ number */
2619 CtlP->MReg3 = Frequency; /* set frequency */
2620 if (PeriodicOnly) { /* periodic interrupt only */
2621 CtlP->MReg3 |= PERIODIC_ONLY;
2625 sOutB(CtlP->MReg2IO, CtlP->MReg2);
2626 sOutB(CtlP->MReg3IO, CtlP->MReg3);
2627 sControllerEOI(CtlP); /* clear EOI if warm init */
2630 for (i = done = 0; i < AiopIOListSize; i++) {
2632 CtlP->AiopIO[i] = (WordIO_t) io;
2633 CtlP->AiopIntChanIO[i] = io + _INT_CHAN;
2634 sOutB(CtlP->MReg2IO, CtlP->MReg2 | (i & 0x03)); /* AIOP index */
2635 sOutB(MudbacIO, (Byte_t) (io >> 6)); /* set up AIOP I/O in MUDBAC */
2638 sEnAiop(CtlP, i); /* enable the AIOP */
2639 CtlP->AiopID[i] = sReadAiopID(io); /* read AIOP ID */
2640 if (CtlP->AiopID[i] == AIOPID_NULL) /* if AIOP does not exist */
2641 done = 1; /* done looking for AIOPs */
2643 CtlP->AiopNumChan[i] = sReadAiopNumChan((WordIO_t) io); /* num channels in AIOP */
2644 sOutW((WordIO_t) io + _INDX_ADDR, _CLK_PRE); /* clock prescaler */
2645 sOutB(io + _INDX_DATA, sClockPrescale);
2646 CtlP->NumAiop++; /* bump count of AIOPs */
2648 sDisAiop(CtlP, i); /* disable AIOP */
2651 if (CtlP->NumAiop == 0)
2654 return (CtlP->NumAiop);
2657 /***************************************************************************
2658 Function: sReadAiopID
2659 Purpose: Read the AIOP idenfication number directly from an AIOP.
2660 Call: sReadAiopID(io)
2661 ByteIO_t io: AIOP base I/O address
2662 Return: int: Flag AIOPID_XXXX if a valid AIOP is found, where X
2663 is replace by an identifying number.
2664 Flag AIOPID_NULL if no valid AIOP is found
2665 Warnings: No context switches are allowed while executing this function.
2668 static int sReadAiopID(ByteIO_t io)
2670 Byte_t AiopID; /* ID byte from AIOP */
2672 sOutB(io + _CMD_REG, RESET_ALL); /* reset AIOP */
2673 sOutB(io + _CMD_REG, 0x0);
2674 AiopID = sInW(io + _CHN_STAT0) & 0x07;
2677 else /* AIOP does not exist */
2681 /***************************************************************************
2682 Function: sReadAiopNumChan
2683 Purpose: Read the number of channels available in an AIOP directly from
2685 Call: sReadAiopNumChan(io)
2686 WordIO_t io: AIOP base I/O address
2687 Return: int: The number of channels available
2688 Comments: The number of channels is determined by write/reads from identical
2689 offsets within the SRAM address spaces for channels 0 and 4.
2690 If the channel 4 space is mirrored to channel 0 it is a 4 channel
2691 AIOP, otherwise it is an 8 channel.
2692 Warnings: No context switches are allowed while executing this function.
2694 static int sReadAiopNumChan(WordIO_t io)
2697 static Byte_t R[4] = { 0x00, 0x00, 0x34, 0x12 };
2699 /* write to chan 0 SRAM */
2700 out32((DWordIO_t) io + _INDX_ADDR, R);
2701 sOutW(io + _INDX_ADDR, 0); /* read from SRAM, chan 0 */
2702 x = sInW(io + _INDX_DATA);
2703 sOutW(io + _INDX_ADDR, 0x4000); /* read from SRAM, chan 4 */
2704 if (x != sInW(io + _INDX_DATA)) /* if different must be 8 chan */
2710 /***************************************************************************
2712 Purpose: Initialization of a channel and channel structure
2713 Call: sInitChan(CtlP,ChP,AiopNum,ChanNum)
2714 CONTROLLER_T *CtlP; Ptr to controller structure
2715 CHANNEL_T *ChP; Ptr to channel structure
2716 int AiopNum; AIOP number within controller
2717 int ChanNum; Channel number within AIOP
2718 Return: int: 1 if initialization succeeded, 0 if it fails because channel
2719 number exceeds number of channels available in AIOP.
2720 Comments: This function must be called before a channel can be used.
2721 Warnings: No range checking on any of the parameters is done.
2723 No context switches are allowed while executing this function.
2725 static int sInitChan(CONTROLLER_T * CtlP, CHANNEL_T * ChP, int AiopNum,
2736 if (ChanNum >= CtlP->AiopNumChan[AiopNum])
2737 return 0; /* exceeds num chans in AIOP */
2739 /* Channel, AIOP, and controller identifiers */
2741 ChP->ChanID = CtlP->AiopID[AiopNum];
2742 ChP->AiopNum = AiopNum;
2743 ChP->ChanNum = ChanNum;
2745 /* Global direct addresses */
2746 AiopIO = CtlP->AiopIO[AiopNum];
2747 ChP->Cmd = (ByteIO_t) AiopIO + _CMD_REG;
2748 ChP->IntChan = (ByteIO_t) AiopIO + _INT_CHAN;
2749 ChP->IntMask = (ByteIO_t) AiopIO + _INT_MASK;
2750 ChP->IndexAddr = (DWordIO_t) AiopIO + _INDX_ADDR;
2751 ChP->IndexData = AiopIO + _INDX_DATA;
2753 /* Channel direct addresses */
2754 ChIOOff = AiopIO + ChP->ChanNum * 2;
2755 ChP->TxRxData = ChIOOff + _TD0;
2756 ChP->ChanStat = ChIOOff + _CHN_STAT0;
2757 ChP->TxRxCount = ChIOOff + _FIFO_CNT0;
2758 ChP->IntID = (ByteIO_t) AiopIO + ChP->ChanNum + _INT_ID0;
2760 /* Initialize the channel from the RData array */
2761 for (i = 0; i < RDATASIZE; i += 4) {
2763 R[1] = RData[i + 1] + 0x10 * ChanNum;
2764 R[2] = RData[i + 2];
2765 R[3] = RData[i + 3];
2766 out32(ChP->IndexAddr, R);
2770 for (i = 0; i < RREGDATASIZE; i += 4) {
2771 ChR[i] = RRegData[i];
2772 ChR[i + 1] = RRegData[i + 1] + 0x10 * ChanNum;
2773 ChR[i + 2] = RRegData[i + 2];
2774 ChR[i + 3] = RRegData[i + 3];
2777 /* Indexed registers */
2778 ChOff = (Word_t) ChanNum *0x1000;
2780 if (sClockPrescale == 0x14)
2785 ChP->BaudDiv[0] = (Byte_t) (ChOff + _BAUD);
2786 ChP->BaudDiv[1] = (Byte_t) ((ChOff + _BAUD) >> 8);
2787 ChP->BaudDiv[2] = (Byte_t) brd9600;
2788 ChP->BaudDiv[3] = (Byte_t) (brd9600 >> 8);
2789 out32(ChP->IndexAddr, ChP->BaudDiv);
2791 ChP->TxControl[0] = (Byte_t) (ChOff + _TX_CTRL);
2792 ChP->TxControl[1] = (Byte_t) ((ChOff + _TX_CTRL) >> 8);
2793 ChP->TxControl[2] = 0;
2794 ChP->TxControl[3] = 0;
2795 out32(ChP->IndexAddr, ChP->TxControl);
2797 ChP->RxControl[0] = (Byte_t) (ChOff + _RX_CTRL);
2798 ChP->RxControl[1] = (Byte_t) ((ChOff + _RX_CTRL) >> 8);
2799 ChP->RxControl[2] = 0;
2800 ChP->RxControl[3] = 0;
2801 out32(ChP->IndexAddr, ChP->RxControl);
2803 ChP->TxEnables[0] = (Byte_t) (ChOff + _TX_ENBLS);
2804 ChP->TxEnables[1] = (Byte_t) ((ChOff + _TX_ENBLS) >> 8);
2805 ChP->TxEnables[2] = 0;
2806 ChP->TxEnables[3] = 0;
2807 out32(ChP->IndexAddr, ChP->TxEnables);
2809 ChP->TxCompare[0] = (Byte_t) (ChOff + _TXCMP1);
2810 ChP->TxCompare[1] = (Byte_t) ((ChOff + _TXCMP1) >> 8);
2811 ChP->TxCompare[2] = 0;
2812 ChP->TxCompare[3] = 0;
2813 out32(ChP->IndexAddr, ChP->TxCompare);
2815 ChP->TxReplace1[0] = (Byte_t) (ChOff + _TXREP1B1);
2816 ChP->TxReplace1[1] = (Byte_t) ((ChOff + _TXREP1B1) >> 8);
2817 ChP->TxReplace1[2] = 0;
2818 ChP->TxReplace1[3] = 0;
2819 out32(ChP->IndexAddr, ChP->TxReplace1);
2821 ChP->TxReplace2[0] = (Byte_t) (ChOff + _TXREP2);
2822 ChP->TxReplace2[1] = (Byte_t) ((ChOff + _TXREP2) >> 8);
2823 ChP->TxReplace2[2] = 0;
2824 ChP->TxReplace2[3] = 0;
2825 out32(ChP->IndexAddr, ChP->TxReplace2);
2827 ChP->TxFIFOPtrs = ChOff + _TXF_OUTP;
2828 ChP->TxFIFO = ChOff + _TX_FIFO;
2830 sOutB(ChP->Cmd, (Byte_t) ChanNum | RESTXFCNT); /* apply reset Tx FIFO count */
2831 sOutB(ChP->Cmd, (Byte_t) ChanNum); /* remove reset Tx FIFO count */
2832 sOutW((WordIO_t) ChP->IndexAddr, ChP->TxFIFOPtrs); /* clear Tx in/out ptrs */
2833 sOutW(ChP->IndexData, 0);
2834 ChP->RxFIFOPtrs = ChOff + _RXF_OUTP;
2835 ChP->RxFIFO = ChOff + _RX_FIFO;
2837 sOutB(ChP->Cmd, (Byte_t) ChanNum | RESRXFCNT); /* apply reset Rx FIFO count */
2838 sOutB(ChP->Cmd, (Byte_t) ChanNum); /* remove reset Rx FIFO count */
2839 sOutW((WordIO_t) ChP->IndexAddr, ChP->RxFIFOPtrs); /* clear Rx out ptr */
2840 sOutW(ChP->IndexData, 0);
2841 sOutW((WordIO_t) ChP->IndexAddr, ChP->RxFIFOPtrs + 2); /* clear Rx in ptr */
2842 sOutW(ChP->IndexData, 0);
2843 ChP->TxPrioCnt = ChOff + _TXP_CNT;
2844 sOutW((WordIO_t) ChP->IndexAddr, ChP->TxPrioCnt);
2845 sOutB(ChP->IndexData, 0);
2846 ChP->TxPrioPtr = ChOff + _TXP_PNTR;
2847 sOutW((WordIO_t) ChP->IndexAddr, ChP->TxPrioPtr);
2848 sOutB(ChP->IndexData, 0);
2849 ChP->TxPrioBuf = ChOff + _TXP_BUF;
2850 sEnRxProcessor(ChP); /* start the Rx processor */
2855 /***************************************************************************
2856 Function: sStopRxProcessor
2857 Purpose: Stop the receive processor from processing a channel.
2858 Call: sStopRxProcessor(ChP)
2859 CHANNEL_T *ChP; Ptr to channel structure
2861 Comments: The receive processor can be started again with sStartRxProcessor().
2862 This function causes the receive processor to skip over the
2863 stopped channel. It does not stop it from processing other channels.
2865 Warnings: No context switches are allowed while executing this function.
2867 Do not leave the receive processor stopped for more than one
2870 After calling this function a delay of 4 uS is required to ensure
2871 that the receive processor is no longer processing this channel.
2873 static void sStopRxProcessor(CHANNEL_T * ChP)
2881 out32(ChP->IndexAddr, R);
2884 /***************************************************************************
2885 Function: sFlushRxFIFO
2886 Purpose: Flush the Rx FIFO
2887 Call: sFlushRxFIFO(ChP)
2888 CHANNEL_T *ChP; Ptr to channel structure
2890 Comments: To prevent data from being enqueued or dequeued in the Tx FIFO
2891 while it is being flushed the receive processor is stopped
2892 and the transmitter is disabled. After these operations a
2893 4 uS delay is done before clearing the pointers to allow
2894 the receive processor to stop. These items are handled inside
2896 Warnings: No context switches are allowed while executing this function.
2898 static void sFlushRxFIFO(CHANNEL_T * ChP)
2901 Byte_t Ch; /* channel number within AIOP */
2902 int RxFIFOEnabled; /* 1 if Rx FIFO enabled */
2904 if (sGetRxCnt(ChP) == 0) /* Rx FIFO empty */
2905 return; /* don't need to flush */
2908 if (ChP->R[0x32] == 0x08) { /* Rx FIFO is enabled */
2910 sDisRxFIFO(ChP); /* disable it */
2911 for (i = 0; i < 2000 / 200; i++) /* delay 2 uS to allow proc to disable FIFO */
2912 sInB(ChP->IntChan); /* depends on bus i/o timing */
2914 sGetChanStatus(ChP); /* clear any pending Rx errors in chan stat */
2915 Ch = (Byte_t) sGetChanNum(ChP);
2916 sOutB(ChP->Cmd, Ch | RESRXFCNT); /* apply reset Rx FIFO count */
2917 sOutB(ChP->Cmd, Ch); /* remove reset Rx FIFO count */
2918 sOutW((WordIO_t) ChP->IndexAddr, ChP->RxFIFOPtrs); /* clear Rx out ptr */
2919 sOutW(ChP->IndexData, 0);
2920 sOutW((WordIO_t) ChP->IndexAddr, ChP->RxFIFOPtrs + 2); /* clear Rx in ptr */
2921 sOutW(ChP->IndexData, 0);
2923 sEnRxFIFO(ChP); /* enable Rx FIFO */
2926 /***************************************************************************
2927 Function: sFlushTxFIFO
2928 Purpose: Flush the Tx FIFO
2929 Call: sFlushTxFIFO(ChP)
2930 CHANNEL_T *ChP; Ptr to channel structure
2932 Comments: To prevent data from being enqueued or dequeued in the Tx FIFO
2933 while it is being flushed the receive processor is stopped
2934 and the transmitter is disabled. After these operations a
2935 4 uS delay is done before clearing the pointers to allow
2936 the receive processor to stop. These items are handled inside
2938 Warnings: No context switches are allowed while executing this function.
2940 static void sFlushTxFIFO(CHANNEL_T * ChP)
2943 Byte_t Ch; /* channel number within AIOP */
2944 int TxEnabled; /* 1 if transmitter enabled */
2946 if (sGetTxCnt(ChP) == 0) /* Tx FIFO empty */
2947 return; /* don't need to flush */
2950 if (ChP->TxControl[3] & TX_ENABLE) {
2952 sDisTransmit(ChP); /* disable transmitter */
2954 sStopRxProcessor(ChP); /* stop Rx processor */
2955 for (i = 0; i < 4000 / 200; i++) /* delay 4 uS to allow proc to stop */
2956 sInB(ChP->IntChan); /* depends on bus i/o timing */
2957 Ch = (Byte_t) sGetChanNum(ChP);
2958 sOutB(ChP->Cmd, Ch | RESTXFCNT); /* apply reset Tx FIFO count */
2959 sOutB(ChP->Cmd, Ch); /* remove reset Tx FIFO count */
2960 sOutW((WordIO_t) ChP->IndexAddr, ChP->TxFIFOPtrs); /* clear Tx in/out ptrs */
2961 sOutW(ChP->IndexData, 0);
2963 sEnTransmit(ChP); /* enable transmitter */
2964 sStartRxProcessor(ChP); /* restart Rx processor */
2967 /***************************************************************************
2968 Function: sWriteTxPrioByte
2969 Purpose: Write a byte of priority transmit data to a channel
2970 Call: sWriteTxPrioByte(ChP,Data)
2971 CHANNEL_T *ChP; Ptr to channel structure
2972 Byte_t Data; The transmit data byte
2974 Return: int: 1 if the bytes is successfully written, otherwise 0.
2976 Comments: The priority byte is transmitted before any data in the Tx FIFO.
2978 Warnings: No context switches are allowed while executing this function.
2980 static int sWriteTxPrioByte(CHANNEL_T * ChP, Byte_t Data)
2982 Byte_t DWBuf[4]; /* buffer for double word writes */
2983 Word_t *WordPtr; /* must be far because Win SS != DS */
2984 register DWordIO_t IndexAddr;
2986 if (sGetTxCnt(ChP) > 1) { /* write it to Tx priority buffer */
2987 IndexAddr = ChP->IndexAddr;
2988 sOutW((WordIO_t) IndexAddr, ChP->TxPrioCnt); /* get priority buffer status */
2989 if (sInB((ByteIO_t) ChP->IndexData) & PRI_PEND) /* priority buffer busy */
2990 return (0); /* nothing sent */
2992 WordPtr = (Word_t *) (&DWBuf[0]);
2993 *WordPtr = ChP->TxPrioBuf; /* data byte address */
2995 DWBuf[2] = Data; /* data byte value */
2996 out32(IndexAddr, DWBuf); /* write it out */
2998 *WordPtr = ChP->TxPrioCnt; /* Tx priority count address */
3000 DWBuf[2] = PRI_PEND + 1; /* indicate 1 byte pending */
3001 DWBuf[3] = 0; /* priority buffer pointer */
3002 out32(IndexAddr, DWBuf); /* write it out */
3003 } else { /* write it to Tx FIFO */
3005 sWriteTxByte(sGetTxRxDataIO(ChP), Data);
3007 return (1); /* 1 byte sent */
3010 /***************************************************************************
3011 Function: sEnInterrupts
3012 Purpose: Enable one or more interrupts for a channel
3013 Call: sEnInterrupts(ChP,Flags)
3014 CHANNEL_T *ChP; Ptr to channel structure
3015 Word_t Flags: Interrupt enable flags, can be any combination
3016 of the following flags:
3017 TXINT_EN: Interrupt on Tx FIFO empty
3018 RXINT_EN: Interrupt on Rx FIFO at trigger level (see
3020 SRCINT_EN: Interrupt on SRC (Special Rx Condition)
3021 MCINT_EN: Interrupt on modem input change
3022 CHANINT_EN: Allow channel interrupt signal to the AIOP's
3023 Interrupt Channel Register.
3025 Comments: If an interrupt enable flag is set in Flags, that interrupt will be
3026 enabled. If an interrupt enable flag is not set in Flags, that
3027 interrupt will not be changed. Interrupts can be disabled with
3028 function sDisInterrupts().
3030 This function sets the appropriate bit for the channel in the AIOP's
3031 Interrupt Mask Register if the CHANINT_EN flag is set. This allows
3032 this channel's bit to be set in the AIOP's Interrupt Channel Register.
3034 Interrupts must also be globally enabled before channel interrupts
3035 will be passed on to the host. This is done with function
3038 In some cases it may be desirable to disable interrupts globally but
3039 enable channel interrupts. This would allow the global interrupt
3040 status register to be used to determine which AIOPs need service.
3042 static void sEnInterrupts(CHANNEL_T * ChP, Word_t Flags)
3044 Byte_t Mask; /* Interrupt Mask Register */
3046 ChP->RxControl[2] |=
3047 ((Byte_t) Flags & (RXINT_EN | SRCINT_EN | MCINT_EN));
3049 out32(ChP->IndexAddr, ChP->RxControl);
3051 ChP->TxControl[2] |= ((Byte_t) Flags & TXINT_EN);
3053 out32(ChP->IndexAddr, ChP->TxControl);
3055 if (Flags & CHANINT_EN) {
3056 Mask = sInB(ChP->IntMask) | sBitMapSetTbl[ChP->ChanNum];
3057 sOutB(ChP->IntMask, Mask);
3061 /***************************************************************************
3062 Function: sDisInterrupts
3063 Purpose: Disable one or more interrupts for a channel
3064 Call: sDisInterrupts(ChP,Flags)
3065 CHANNEL_T *ChP; Ptr to channel structure
3066 Word_t Flags: Interrupt flags, can be any combination
3067 of the following flags:
3068 TXINT_EN: Interrupt on Tx FIFO empty
3069 RXINT_EN: Interrupt on Rx FIFO at trigger level (see
3071 SRCINT_EN: Interrupt on SRC (Special Rx Condition)
3072 MCINT_EN: Interrupt on modem input change
3073 CHANINT_EN: Disable channel interrupt signal to the
3074 AIOP's Interrupt Channel Register.
3076 Comments: If an interrupt flag is set in Flags, that interrupt will be
3077 disabled. If an interrupt flag is not set in Flags, that
3078 interrupt will not be changed. Interrupts can be enabled with
3079 function sEnInterrupts().
3081 This function clears the appropriate bit for the channel in the AIOP's
3082 Interrupt Mask Register if the CHANINT_EN flag is set. This blocks
3083 this channel's bit from being set in the AIOP's Interrupt Channel
3086 static void sDisInterrupts(CHANNEL_T * ChP, Word_t Flags)
3088 Byte_t Mask; /* Interrupt Mask Register */
3090 ChP->RxControl[2] &=
3091 ~((Byte_t) Flags & (RXINT_EN | SRCINT_EN | MCINT_EN));
3092 out32(ChP->IndexAddr, ChP->RxControl);
3093 ChP->TxControl[2] &= ~((Byte_t) Flags & TXINT_EN);
3094 out32(ChP->IndexAddr, ChP->TxControl);
3096 if (Flags & CHANINT_EN) {
3097 Mask = sInB(ChP->IntMask) & sBitMapClrTbl[ChP->ChanNum];
3098 sOutB(ChP->IntMask, Mask);
3102 static void sSetInterfaceMode(CHANNEL_T * ChP, Byte_t mode)
3104 sOutB(ChP->CtlP->AiopIO[2], (mode & 0x18) | ChP->ChanNum);
3108 * Not an official SSCI function, but how to reset RocketModems.
3111 static void sModemReset(CONTROLLER_T * CtlP, int chan, int on)
3116 addr = CtlP->AiopIO[0] + 0x400;
3117 val = sInB(CtlP->MReg3IO);
3118 /* if AIOP[1] is not enabled, enable it */
3119 if ((val & 2) == 0) {
3120 val = sInB(CtlP->MReg2IO);
3121 sOutB(CtlP->MReg2IO, (val & 0xfc) | (1 & 0x03));
3122 sOutB(CtlP->MBaseIO, (unsigned char) (addr >> 6));
3128 sOutB(addr + chan, 0); /* apply or remove reset */
3133 * Not an official SSCI function, but how to reset RocketModems.
3136 static void sPCIModemReset(CONTROLLER_T * CtlP, int chan, int on)
3140 addr = CtlP->AiopIO[0] + 0x40; /* 2nd AIOP */
3143 sOutB(addr + chan, 0); /* apply or remove reset */
3146 /* Returns the line number given the controller (board), aiop and channel number */
3147 static unsigned char GetLineNumber(int ctrl, int aiop, int ch)
3149 return lineNumbers[(ctrl << 5) | (aiop << 3) | ch];
3153 * Stores the line number associated with a given controller (board), aiop
3154 * and channel number.
3155 * Returns: The line number assigned
3157 static unsigned char SetLineNumber(int ctrl, int aiop, int ch)
3159 lineNumbers[(ctrl << 5) | (aiop << 3) | ch] = nextLineNumber++;
3160 return (nextLineNumber - 1);