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 #ifdef PCI_NUM_RESOURCES
44 #define PCI_BASE_ADDRESS(dev, r) ((dev)->resource[r].start)
46 #define PCI_BASE_ADDRESS(dev, r) ((dev)->base_address[r])
49 #define ROCKET_PARANOIA_CHECK
50 #define ROCKET_DISABLE_SIMUSAGE
52 #undef ROCKET_SOFT_FLOW
53 #undef ROCKET_DEBUG_OPEN
54 #undef ROCKET_DEBUG_INTR
55 #undef ROCKET_DEBUG_WRITE
56 #undef ROCKET_DEBUG_FLOW
57 #undef ROCKET_DEBUG_THROTTLE
58 #undef ROCKET_DEBUG_WAIT_UNTIL_SENT
59 #undef ROCKET_DEBUG_RECEIVE
60 #undef ROCKET_DEBUG_HANGUP
62 #undef ROCKET_DEBUG_IO
64 #define POLL_PERIOD HZ/100 /* Polling period .01 seconds (10ms) */
66 /****** Kernel includes ******/
69 #include <config/modversions.h>
72 #include <linux/module.h>
73 #include <linux/errno.h>
74 #include <linux/major.h>
75 #include <linux/kernel.h>
76 #include <linux/signal.h>
77 #include <linux/slab.h>
79 #include <linux/sched.h>
80 #include <linux/timer.h>
81 #include <linux/interrupt.h>
82 #include <linux/tty.h>
83 #include <linux/tty_driver.h>
84 #include <linux/tty_flip.h>
85 #include <linux/string.h>
86 #include <linux/fcntl.h>
87 #include <linux/ptrace.h>
88 #include <linux/ioport.h>
89 #include <linux/delay.h>
90 #include <linux/wait.h>
91 #include <linux/pci.h>
92 #include <asm/uaccess.h>
93 #include <asm/atomic.h>
94 #include <linux/bitops.h>
95 #include <linux/spinlock.h>
96 #include <asm/semaphore.h>
97 #include <linux/init.h>
99 /****** RocketPort includes ******/
101 #include "rocket_int.h"
104 #define ROCKET_VERSION "2.09"
105 #define ROCKET_DATE "12-June-2003"
107 /****** RocketPort Local Variables ******/
109 static struct tty_driver *rocket_driver;
111 static struct rocket_version driver_version = {
112 ROCKET_VERSION, ROCKET_DATE
115 static struct r_port *rp_table[MAX_RP_PORTS]; /* The main repository of serial port state information. */
116 static unsigned int xmit_flags[NUM_BOARDS]; /* Bit significant, indicates port had data to transmit. */
117 /* eg. Bit 0 indicates port 0 has xmit data, ... */
118 static atomic_t rp_num_ports_open; /* Number of serial ports open */
119 static struct timer_list rocket_timer;
121 static unsigned long board1; /* ISA addresses, retrieved from rocketport.conf */
122 static unsigned long board2;
123 static unsigned long board3;
124 static unsigned long board4;
125 static unsigned long controller;
126 static int support_low_speed;
127 static unsigned long modem1;
128 static unsigned long modem2;
129 static unsigned long modem3;
130 static unsigned long modem4;
131 static unsigned long pc104_1[8];
132 static unsigned long pc104_2[8];
133 static unsigned long pc104_3[8];
134 static unsigned long pc104_4[8];
135 static unsigned long *pc104[4] = { pc104_1, pc104_2, pc104_3, pc104_4 };
137 static int rp_baud_base[NUM_BOARDS]; /* Board config info (Someday make a per-board structure) */
138 static unsigned long rcktpt_io_addr[NUM_BOARDS];
139 static int rcktpt_type[NUM_BOARDS];
140 static int is_PCI[NUM_BOARDS];
141 static rocketModel_t rocketModel[NUM_BOARDS];
142 static int max_board;
145 * The following arrays define the interrupt bits corresponding to each AIOP.
146 * These bits are different between the ISA and regular PCI boards and the
147 * Universal PCI boards.
150 static Word_t aiop_intr_bits[AIOP_CTL_SIZE] = {
157 static Word_t upci_aiop_intr_bits[AIOP_CTL_SIZE] = {
158 UPCI_AIOP_INTR_BIT_0,
159 UPCI_AIOP_INTR_BIT_1,
160 UPCI_AIOP_INTR_BIT_2,
164 static Byte_t RData[RDATASIZE] = {
165 0x00, 0x09, 0xf6, 0x82,
166 0x02, 0x09, 0x86, 0xfb,
167 0x04, 0x09, 0x00, 0x0a,
168 0x06, 0x09, 0x01, 0x0a,
169 0x08, 0x09, 0x8a, 0x13,
170 0x0a, 0x09, 0xc5, 0x11,
171 0x0c, 0x09, 0x86, 0x85,
172 0x0e, 0x09, 0x20, 0x0a,
173 0x10, 0x09, 0x21, 0x0a,
174 0x12, 0x09, 0x41, 0xff,
175 0x14, 0x09, 0x82, 0x00,
176 0x16, 0x09, 0x82, 0x7b,
177 0x18, 0x09, 0x8a, 0x7d,
178 0x1a, 0x09, 0x88, 0x81,
179 0x1c, 0x09, 0x86, 0x7a,
180 0x1e, 0x09, 0x84, 0x81,
181 0x20, 0x09, 0x82, 0x7c,
182 0x22, 0x09, 0x0a, 0x0a
185 static Byte_t RRegData[RREGDATASIZE] = {
186 0x00, 0x09, 0xf6, 0x82, /* 00: Stop Rx processor */
187 0x08, 0x09, 0x8a, 0x13, /* 04: Tx software flow control */
188 0x0a, 0x09, 0xc5, 0x11, /* 08: XON char */
189 0x0c, 0x09, 0x86, 0x85, /* 0c: XANY */
190 0x12, 0x09, 0x41, 0xff, /* 10: Rx mask char */
191 0x14, 0x09, 0x82, 0x00, /* 14: Compare/Ignore #0 */
192 0x16, 0x09, 0x82, 0x7b, /* 18: Compare #1 */
193 0x18, 0x09, 0x8a, 0x7d, /* 1c: Compare #2 */
194 0x1a, 0x09, 0x88, 0x81, /* 20: Interrupt #1 */
195 0x1c, 0x09, 0x86, 0x7a, /* 24: Ignore/Replace #1 */
196 0x1e, 0x09, 0x84, 0x81, /* 28: Interrupt #2 */
197 0x20, 0x09, 0x82, 0x7c, /* 2c: Ignore/Replace #2 */
198 0x22, 0x09, 0x0a, 0x0a /* 30: Rx FIFO Enable */
201 static CONTROLLER_T sController[CTL_SIZE] = {
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}},
208 {-1, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, {0, 0, 0, 0},
209 {0, 0, 0, 0}, {-1, -1, -1, -1}, {0, 0, 0, 0}}
212 static Byte_t sBitMapClrTbl[8] = {
213 0xfe, 0xfd, 0xfb, 0xf7, 0xef, 0xdf, 0xbf, 0x7f
216 static Byte_t sBitMapSetTbl[8] = {
217 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80
220 static int sClockPrescale = 0x14;
223 * Line number is the ttySIx number (x), the Minor number. We
224 * assign them sequentially, starting at zero. The following
225 * array keeps track of the line number assigned to a given board/aiop/channel.
227 static unsigned char lineNumbers[MAX_RP_PORTS];
228 static unsigned long nextLineNumber;
230 /***** RocketPort Static Prototypes *********/
231 static int __init init_ISA(int i);
232 static void rp_wait_until_sent(struct tty_struct *tty, int timeout);
233 static void rp_flush_buffer(struct tty_struct *tty);
234 static void rmSpeakerReset(CONTROLLER_T * CtlP, unsigned long model);
235 static unsigned char GetLineNumber(int ctrl, int aiop, int ch);
236 static unsigned char SetLineNumber(int ctrl, int aiop, int ch);
237 static void rp_start(struct tty_struct *tty);
238 static int sInitChan(CONTROLLER_T * CtlP, CHANNEL_T * ChP, int AiopNum,
240 static void sSetInterfaceMode(CHANNEL_T * ChP, Byte_t mode);
241 static void sFlushRxFIFO(CHANNEL_T * ChP);
242 static void sFlushTxFIFO(CHANNEL_T * ChP);
243 static void sEnInterrupts(CHANNEL_T * ChP, Word_t Flags);
244 static void sDisInterrupts(CHANNEL_T * ChP, Word_t Flags);
245 static void sModemReset(CONTROLLER_T * CtlP, int chan, int on);
246 static void sPCIModemReset(CONTROLLER_T * CtlP, int chan, int on);
247 static int sWriteTxPrioByte(CHANNEL_T * ChP, Byte_t Data);
248 static int sPCIInitController(CONTROLLER_T * CtlP, int CtlNum,
249 ByteIO_t * AiopIOList, int AiopIOListSize,
250 WordIO_t ConfigIO, int IRQNum, Byte_t Frequency,
251 int PeriodicOnly, int altChanRingIndicator,
253 static int sInitController(CONTROLLER_T * CtlP, int CtlNum, ByteIO_t MudbacIO,
254 ByteIO_t * AiopIOList, int AiopIOListSize,
255 int IRQNum, Byte_t Frequency, int PeriodicOnly);
256 static int sReadAiopID(ByteIO_t io);
257 static int sReadAiopNumChan(WordIO_t io);
259 MODULE_AUTHOR("Theodore Ts'o");
260 MODULE_DESCRIPTION("Comtrol RocketPort driver");
261 module_param(board1, ulong, 0);
262 MODULE_PARM_DESC(board1, "I/O port for (ISA) board #1");
263 module_param(board2, ulong, 0);
264 MODULE_PARM_DESC(board2, "I/O port for (ISA) board #2");
265 module_param(board3, ulong, 0);
266 MODULE_PARM_DESC(board3, "I/O port for (ISA) board #3");
267 module_param(board4, ulong, 0);
268 MODULE_PARM_DESC(board4, "I/O port for (ISA) board #4");
269 module_param(controller, ulong, 0);
270 MODULE_PARM_DESC(controller, "I/O port for (ISA) rocketport controller");
271 module_param(support_low_speed, bool, 0);
272 MODULE_PARM_DESC(support_low_speed, "1 means support 50 baud, 0 means support 460400 baud");
273 module_param(modem1, ulong, 0);
274 MODULE_PARM_DESC(modem1, "1 means (ISA) board #1 is a RocketModem");
275 module_param(modem2, ulong, 0);
276 MODULE_PARM_DESC(modem2, "1 means (ISA) board #2 is a RocketModem");
277 module_param(modem3, ulong, 0);
278 MODULE_PARM_DESC(modem3, "1 means (ISA) board #3 is a RocketModem");
279 module_param(modem4, ulong, 0);
280 MODULE_PARM_DESC(modem4, "1 means (ISA) board #4 is a RocketModem");
281 module_param_array(pc104_1, ulong, NULL, 0);
282 MODULE_PARM_DESC(pc104_1, "set interface types for ISA(PC104) board #1 (e.g. pc104_1=232,232,485,485,...");
283 module_param_array(pc104_2, ulong, NULL, 0);
284 MODULE_PARM_DESC(pc104_2, "set interface types for ISA(PC104) board #2 (e.g. pc104_2=232,232,485,485,...");
285 module_param_array(pc104_3, ulong, NULL, 0);
286 MODULE_PARM_DESC(pc104_3, "set interface types for ISA(PC104) board #3 (e.g. pc104_3=232,232,485,485,...");
287 module_param_array(pc104_4, ulong, NULL, 0);
288 MODULE_PARM_DESC(pc104_4, "set interface types for ISA(PC104) board #4 (e.g. pc104_4=232,232,485,485,...");
290 static int rp_init(void);
291 static void rp_cleanup_module(void);
293 module_init(rp_init);
294 module_exit(rp_cleanup_module);
297 MODULE_LICENSE("Dual BSD/GPL");
299 /*************************************************************************/
300 /* Module code starts here */
302 static inline int rocket_paranoia_check(struct r_port *info,
305 #ifdef ROCKET_PARANOIA_CHECK
308 if (info->magic != RPORT_MAGIC) {
309 printk(KERN_INFO "Warning: bad magic number for rocketport struct in %s\n",
318 /* Serial port receive data function. Called (from timer poll) when an AIOPIC signals
319 * that receive data is present on a serial port. Pulls data from FIFO, moves it into the
322 static void rp_do_receive(struct r_port *info,
323 struct tty_struct *tty,
324 CHANNEL_t * cp, unsigned int ChanStatus)
326 unsigned int CharNStat;
327 int ToRecv, wRecv, space = 0, count;
330 struct tty_ldisc *ld;
332 ld = tty_ldisc_ref(tty);
334 ToRecv = sGetRxCnt(cp);
336 space = ld->receive_room(tty);
337 if (space > 2 * TTY_FLIPBUF_SIZE)
338 space = 2 * TTY_FLIPBUF_SIZE;
339 cbuf = tty->flip.char_buf;
340 fbuf = tty->flip.flag_buf;
342 #ifdef ROCKET_DEBUG_INTR
343 printk(KERN_INFO "rp_do_receive(%d, %d)...", ToRecv, space);
347 * determine how many we can actually read in. If we can't
348 * read any in then we have a software overrun condition.
357 * if status indicates there are errored characters in the
358 * FIFO, then enter status mode (a word in FIFO holds
359 * character and status).
361 if (ChanStatus & (RXFOVERFL | RXBREAK | RXFRAME | RXPARITY)) {
362 if (!(ChanStatus & STATMODE)) {
363 #ifdef ROCKET_DEBUG_RECEIVE
364 printk(KERN_INFO "Entering STATMODE...");
366 ChanStatus |= STATMODE;
372 * if we previously entered status mode, then read down the
373 * FIFO one word at a time, pulling apart the character and
374 * the status. Update error counters depending on status
376 if (ChanStatus & STATMODE) {
377 #ifdef ROCKET_DEBUG_RECEIVE
378 printk(KERN_INFO "Ignore %x, read %x...", info->ignore_status_mask,
379 info->read_status_mask);
382 CharNStat = sInW(sGetTxRxDataIO(cp));
383 #ifdef ROCKET_DEBUG_RECEIVE
384 printk(KERN_INFO "%x...", CharNStat);
386 if (CharNStat & STMBREAKH)
387 CharNStat &= ~(STMFRAMEH | STMPARITYH);
388 if (CharNStat & info->ignore_status_mask) {
392 CharNStat &= info->read_status_mask;
393 if (CharNStat & STMBREAKH)
395 else if (CharNStat & STMPARITYH)
396 *fbuf++ = TTY_PARITY;
397 else if (CharNStat & STMFRAMEH)
399 else if (CharNStat & STMRCVROVRH)
400 *fbuf++ = TTY_OVERRUN;
403 *cbuf++ = CharNStat & 0xff;
409 * after we've emptied the FIFO in status mode, turn
410 * status mode back off
412 if (sGetRxCnt(cp) == 0) {
413 #ifdef ROCKET_DEBUG_RECEIVE
414 printk(KERN_INFO "Status mode off.\n");
416 sDisRxStatusMode(cp);
420 * we aren't in status mode, so read down the FIFO two
421 * characters at time by doing repeated word IO
426 sInStrW(sGetTxRxDataIO(cp), (unsigned short *) cbuf, wRecv);
428 cbuf[ToRecv - 1] = sInB(sGetTxRxDataIO(cp));
429 memset(fbuf, 0, ToRecv);
434 /* Push the data up to the tty layer */
435 ld->receive_buf(tty, tty->flip.char_buf, tty->flip.flag_buf, count);
441 * Serial port transmit data function. Called from the timer polling loop as a
442 * result of a bit set in xmit_flags[], indicating data (from the tty layer) is ready
443 * to be sent out the serial port. Data is buffered in rp_table[line].xmit_buf, it is
444 * moved to the port's xmit FIFO. *info is critical data, protected by spinlocks.
446 static void rp_do_transmit(struct r_port *info)
449 CHANNEL_t *cp = &info->channel;
450 struct tty_struct *tty;
453 #ifdef ROCKET_DEBUG_INTR
454 printk(KERN_INFO "rp_do_transmit ");
459 printk(KERN_INFO "rp: WARNING rp_do_transmit called with info->tty==NULL\n");
460 clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
464 spin_lock_irqsave(&info->slock, flags);
466 info->xmit_fifo_room = TXFIFO_SIZE - sGetTxCnt(cp);
468 /* Loop sending data to FIFO until done or FIFO full */
470 if (tty->stopped || tty->hw_stopped)
472 c = min(info->xmit_fifo_room, min(info->xmit_cnt, XMIT_BUF_SIZE - info->xmit_tail));
473 if (c <= 0 || info->xmit_fifo_room <= 0)
475 sOutStrW(sGetTxRxDataIO(cp), (unsigned short *) (info->xmit_buf + info->xmit_tail), c / 2);
477 sOutB(sGetTxRxDataIO(cp), info->xmit_buf[info->xmit_tail + c - 1]);
478 info->xmit_tail += c;
479 info->xmit_tail &= XMIT_BUF_SIZE - 1;
481 info->xmit_fifo_room -= c;
482 #ifdef ROCKET_DEBUG_INTR
483 printk(KERN_INFO "tx %d chars...", c);
487 if (info->xmit_cnt == 0)
488 clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
490 if (info->xmit_cnt < WAKEUP_CHARS) {
492 wake_up_interruptible(&tty->write_wait);
493 #ifdef ROCKETPORT_HAVE_POLL_WAIT
494 wake_up_interruptible(&tty->poll_wait);
498 spin_unlock_irqrestore(&info->slock, flags);
500 #ifdef ROCKET_DEBUG_INTR
501 printk(KERN_INFO "(%d,%d,%d,%d)...", info->xmit_cnt, info->xmit_head,
502 info->xmit_tail, info->xmit_fifo_room);
507 * Called when a serial port signals it has read data in it's RX FIFO.
508 * It checks what interrupts are pending and services them, including
509 * receiving serial data.
511 static void rp_handle_port(struct r_port *info)
514 struct tty_struct *tty;
515 unsigned int IntMask, ChanStatus;
520 if ((info->flags & ROCKET_INITIALIZED) == 0) {
521 printk(KERN_INFO "rp: WARNING: rp_handle_port called with info->flags & NOT_INIT\n");
525 printk(KERN_INFO "rp: WARNING: rp_handle_port called with info->tty==NULL\n");
531 IntMask = sGetChanIntID(cp) & info->intmask;
532 #ifdef ROCKET_DEBUG_INTR
533 printk(KERN_INFO "rp_interrupt %02x...", IntMask);
535 ChanStatus = sGetChanStatus(cp);
536 if (IntMask & RXF_TRIG) { /* Rx FIFO trigger level */
537 rp_do_receive(info, tty, cp, ChanStatus);
539 if (IntMask & DELTA_CD) { /* CD change */
540 #if (defined(ROCKET_DEBUG_OPEN) || defined(ROCKET_DEBUG_INTR) || defined(ROCKET_DEBUG_HANGUP))
541 printk(KERN_INFO "ttyR%d CD now %s...", info->line,
542 (ChanStatus & CD_ACT) ? "on" : "off");
544 if (!(ChanStatus & CD_ACT) && info->cd_status) {
545 #ifdef ROCKET_DEBUG_HANGUP
546 printk(KERN_INFO "CD drop, calling hangup.\n");
550 info->cd_status = (ChanStatus & CD_ACT) ? 1 : 0;
551 wake_up_interruptible(&info->open_wait);
553 #ifdef ROCKET_DEBUG_INTR
554 if (IntMask & DELTA_CTS) { /* CTS change */
555 printk(KERN_INFO "CTS change...\n");
557 if (IntMask & DELTA_DSR) { /* DSR change */
558 printk(KERN_INFO "DSR change...\n");
564 * The top level polling routine. Repeats every 1/100 HZ (10ms).
566 static void rp_do_poll(unsigned long dummy)
569 int ctrl, aiop, ch, line, i;
570 unsigned int xmitmask;
571 unsigned int CtlMask;
572 unsigned char AiopMask;
575 /* Walk through all the boards (ctrl's) */
576 for (ctrl = 0; ctrl < max_board; ctrl++) {
577 if (rcktpt_io_addr[ctrl] <= 0)
580 /* Get a ptr to the board's control struct */
581 ctlp = sCtlNumToCtlPtr(ctrl);
583 /* Get the interupt status from the board */
585 if (ctlp->BusType == isPCI)
586 CtlMask = sPCIGetControllerIntStatus(ctlp);
589 CtlMask = sGetControllerIntStatus(ctlp);
591 /* Check if any AIOP read bits are set */
592 for (aiop = 0; CtlMask; aiop++) {
593 bit = ctlp->AiopIntrBits[aiop];
596 AiopMask = sGetAiopIntStatus(ctlp, aiop);
598 /* Check if any port read bits are set */
599 for (ch = 0; AiopMask; AiopMask >>= 1, ch++) {
602 /* Get the line number (/dev/ttyRx number). */
603 /* Read the data from the port. */
604 line = GetLineNumber(ctrl, aiop, ch);
605 rp_handle_port(rp_table[line]);
611 xmitmask = xmit_flags[ctrl];
614 * xmit_flags contains bit-significant flags, indicating there is data
615 * to xmit on the port. Bit 0 is port 0 on this board, bit 1 is port
616 * 1, ... (32 total possible). The variable i has the aiop and ch
617 * numbers encoded in it (port 0-7 are aiop0, 8-15 are aiop1, etc).
620 for (i = 0; i < rocketModel[ctrl].numPorts; i++) {
621 if (xmitmask & (1 << i)) {
622 aiop = (i & 0x18) >> 3;
624 line = GetLineNumber(ctrl, aiop, ch);
625 rp_do_transmit(rp_table[line]);
632 * Reset the timer so we get called at the next clock tick (10ms).
634 if (atomic_read(&rp_num_ports_open))
635 mod_timer(&rocket_timer, jiffies + POLL_PERIOD);
639 * Initializes the r_port structure for a port, as well as enabling the port on
641 * Inputs: board, aiop, chan numbers
643 static void init_r_port(int board, int aiop, int chan, struct pci_dev *pci_dev)
650 /* Get the next available line number */
651 line = SetLineNumber(board, aiop, chan);
653 ctlp = sCtlNumToCtlPtr(board);
655 /* Get a r_port struct for the port, fill it in and save it globally, indexed by line number */
656 info = kmalloc(sizeof (struct r_port), GFP_KERNEL);
658 printk(KERN_INFO "Couldn't allocate info struct for line #%d\n", line);
661 memset(info, 0, sizeof (struct r_port));
663 info->magic = RPORT_MAGIC;
669 info->closing_wait = 3000;
670 info->close_delay = 50;
671 init_waitqueue_head(&info->open_wait);
672 init_waitqueue_head(&info->close_wait);
673 info->flags &= ~ROCKET_MODE_MASK;
674 switch (pc104[board][line]) {
676 info->flags |= ROCKET_MODE_RS422;
679 info->flags |= ROCKET_MODE_RS485;
683 info->flags |= ROCKET_MODE_RS232;
687 info->intmask = RXF_TRIG | TXFIFO_MT | SRC_INT | DELTA_CD | DELTA_CTS | DELTA_DSR;
688 if (sInitChan(ctlp, &info->channel, aiop, chan) == 0) {
689 printk(KERN_INFO "RocketPort sInitChan(%d, %d, %d) failed!\n", board, aiop, chan);
694 rocketMode = info->flags & ROCKET_MODE_MASK;
696 if ((info->flags & ROCKET_RTS_TOGGLE) || (rocketMode == ROCKET_MODE_RS485))
697 sEnRTSToggle(&info->channel);
699 sDisRTSToggle(&info->channel);
701 if (ctlp->boardType == ROCKET_TYPE_PC104) {
702 switch (rocketMode) {
703 case ROCKET_MODE_RS485:
704 sSetInterfaceMode(&info->channel, InterfaceModeRS485);
706 case ROCKET_MODE_RS422:
707 sSetInterfaceMode(&info->channel, InterfaceModeRS422);
709 case ROCKET_MODE_RS232:
711 if (info->flags & ROCKET_RTS_TOGGLE)
712 sSetInterfaceMode(&info->channel, InterfaceModeRS232T);
714 sSetInterfaceMode(&info->channel, InterfaceModeRS232);
718 spin_lock_init(&info->slock);
719 sema_init(&info->write_sem, 1);
720 rp_table[line] = info;
722 tty_register_device(rocket_driver, line, &pci_dev->dev);
726 * Configures a rocketport port according to its termio settings. Called from
727 * user mode into the driver (exception handler). *info CD manipulation is spinlock protected.
729 static void configure_r_port(struct r_port *info,
730 struct termios *old_termios)
735 int bits, baud, divisor;
738 if (!info->tty || !info->tty->termios)
741 cflag = info->tty->termios->c_cflag;
743 /* Byte size and parity */
744 if ((cflag & CSIZE) == CS8) {
751 if (cflag & CSTOPB) {
758 if (cflag & PARENB) {
761 if (cflag & PARODD) {
771 baud = tty_get_baud_rate(info->tty);
774 divisor = ((rp_baud_base[info->board] + (baud >> 1)) / baud) - 1;
775 if ((divisor >= 8192 || divisor < 0) && old_termios) {
776 info->tty->termios->c_cflag &= ~CBAUD;
777 info->tty->termios->c_cflag |=
778 (old_termios->c_cflag & CBAUD);
779 baud = tty_get_baud_rate(info->tty);
782 divisor = (rp_baud_base[info->board] / baud) - 1;
784 if (divisor >= 8192 || divisor < 0) {
786 divisor = (rp_baud_base[info->board] / baud) - 1;
788 info->cps = baud / bits;
789 sSetBaud(cp, divisor);
791 if (cflag & CRTSCTS) {
792 info->intmask |= DELTA_CTS;
795 info->intmask &= ~DELTA_CTS;
798 if (cflag & CLOCAL) {
799 info->intmask &= ~DELTA_CD;
801 spin_lock_irqsave(&info->slock, flags);
802 if (sGetChanStatus(cp) & CD_ACT)
806 info->intmask |= DELTA_CD;
807 spin_unlock_irqrestore(&info->slock, flags);
811 * Handle software flow control in the board
813 #ifdef ROCKET_SOFT_FLOW
814 if (I_IXON(info->tty)) {
815 sEnTxSoftFlowCtl(cp);
816 if (I_IXANY(info->tty)) {
821 sSetTxXONChar(cp, START_CHAR(info->tty));
822 sSetTxXOFFChar(cp, STOP_CHAR(info->tty));
824 sDisTxSoftFlowCtl(cp);
831 * Set up ignore/read mask words
833 info->read_status_mask = STMRCVROVRH | 0xFF;
834 if (I_INPCK(info->tty))
835 info->read_status_mask |= STMFRAMEH | STMPARITYH;
836 if (I_BRKINT(info->tty) || I_PARMRK(info->tty))
837 info->read_status_mask |= STMBREAKH;
840 * Characters to ignore
842 info->ignore_status_mask = 0;
843 if (I_IGNPAR(info->tty))
844 info->ignore_status_mask |= STMFRAMEH | STMPARITYH;
845 if (I_IGNBRK(info->tty)) {
846 info->ignore_status_mask |= STMBREAKH;
848 * If we're ignoring parity and break indicators,
849 * ignore overruns too. (For real raw support).
851 if (I_IGNPAR(info->tty))
852 info->ignore_status_mask |= STMRCVROVRH;
855 rocketMode = info->flags & ROCKET_MODE_MASK;
857 if ((info->flags & ROCKET_RTS_TOGGLE)
858 || (rocketMode == ROCKET_MODE_RS485))
863 sSetRTS(&info->channel);
865 if (cp->CtlP->boardType == ROCKET_TYPE_PC104) {
866 switch (rocketMode) {
867 case ROCKET_MODE_RS485:
868 sSetInterfaceMode(cp, InterfaceModeRS485);
870 case ROCKET_MODE_RS422:
871 sSetInterfaceMode(cp, InterfaceModeRS422);
873 case ROCKET_MODE_RS232:
875 if (info->flags & ROCKET_RTS_TOGGLE)
876 sSetInterfaceMode(cp, InterfaceModeRS232T);
878 sSetInterfaceMode(cp, InterfaceModeRS232);
884 /* info->count is considered critical, protected by spinlocks. */
885 static int block_til_ready(struct tty_struct *tty, struct file *filp,
888 DECLARE_WAITQUEUE(wait, current);
890 int do_clocal = 0, extra_count = 0;
894 * If the device is in the middle of being closed, then block
895 * until it's done, and then try again.
897 if (tty_hung_up_p(filp))
898 return ((info->flags & ROCKET_HUP_NOTIFY) ? -EAGAIN : -ERESTARTSYS);
899 if (info->flags & ROCKET_CLOSING) {
900 interruptible_sleep_on(&info->close_wait);
901 return ((info->flags & ROCKET_HUP_NOTIFY) ? -EAGAIN : -ERESTARTSYS);
905 * If non-blocking mode is set, or the port is not enabled,
906 * then make the check up front and then exit.
908 if ((filp->f_flags & O_NONBLOCK) || (tty->flags & (1 << TTY_IO_ERROR))) {
909 info->flags |= ROCKET_NORMAL_ACTIVE;
912 if (tty->termios->c_cflag & CLOCAL)
916 * Block waiting for the carrier detect and the line to become free. While we are in
917 * this loop, info->count is dropped by one, so that rp_close() knows when to free things.
918 * We restore it upon exit, either normal or abnormal.
921 add_wait_queue(&info->open_wait, &wait);
922 #ifdef ROCKET_DEBUG_OPEN
923 printk(KERN_INFO "block_til_ready before block: ttyR%d, count = %d\n", info->line, info->count);
925 spin_lock_irqsave(&info->slock, flags);
927 #ifdef ROCKET_DISABLE_SIMUSAGE
928 info->flags |= ROCKET_NORMAL_ACTIVE;
930 if (!tty_hung_up_p(filp)) {
935 info->blocked_open++;
937 spin_unlock_irqrestore(&info->slock, flags);
940 if (tty->termios->c_cflag & CBAUD) {
941 sSetDTR(&info->channel);
942 sSetRTS(&info->channel);
944 set_current_state(TASK_INTERRUPTIBLE);
945 if (tty_hung_up_p(filp) || !(info->flags & ROCKET_INITIALIZED)) {
946 if (info->flags & ROCKET_HUP_NOTIFY)
949 retval = -ERESTARTSYS;
952 if (!(info->flags & ROCKET_CLOSING) && (do_clocal || (sGetChanStatusLo(&info->channel) & CD_ACT)))
954 if (signal_pending(current)) {
955 retval = -ERESTARTSYS;
958 #ifdef ROCKET_DEBUG_OPEN
959 printk(KERN_INFO "block_til_ready blocking: ttyR%d, count = %d, flags=0x%0x\n",
960 info->line, info->count, info->flags);
962 schedule(); /* Don't hold spinlock here, will hang PC */
964 current->state = TASK_RUNNING;
965 remove_wait_queue(&info->open_wait, &wait);
967 spin_lock_irqsave(&info->slock, flags);
971 info->blocked_open--;
973 spin_unlock_irqrestore(&info->slock, flags);
975 #ifdef ROCKET_DEBUG_OPEN
976 printk(KERN_INFO "block_til_ready after blocking: ttyR%d, count = %d\n",
977 info->line, info->count);
981 info->flags |= ROCKET_NORMAL_ACTIVE;
986 * Exception handler that opens a serial port. Creates xmit_buf storage, fills in
987 * port's r_port struct. Initializes the port hardware.
989 static int rp_open(struct tty_struct *tty, struct file *filp)
992 int line = 0, retval;
996 line = TTY_GET_LINE(tty);
997 if ((line < 0) || (line >= MAX_RP_PORTS) || ((info = rp_table[line]) == NULL))
1000 page = __get_free_page(GFP_KERNEL);
1004 if (info->flags & ROCKET_CLOSING) {
1005 interruptible_sleep_on(&info->close_wait);
1007 return ((info->flags & ROCKET_HUP_NOTIFY) ? -EAGAIN : -ERESTARTSYS);
1011 * We must not sleep from here until the port is marked fully in use.
1016 info->xmit_buf = (unsigned char *) page;
1018 tty->driver_data = info;
1021 if (info->count++ == 0) {
1022 atomic_inc(&rp_num_ports_open);
1024 #ifdef ROCKET_DEBUG_OPEN
1025 printk(KERN_INFO "rocket mod++ = %d...", atomic_read(&rp_num_ports_open));
1028 #ifdef ROCKET_DEBUG_OPEN
1029 printk(KERN_INFO "rp_open ttyR%d, count=%d\n", info->line, info->count);
1033 * Info->count is now 1; so it's safe to sleep now.
1035 info->session = current->signal->session;
1036 info->pgrp = process_group(current);
1038 if ((info->flags & ROCKET_INITIALIZED) == 0) {
1039 cp = &info->channel;
1040 sSetRxTrigger(cp, TRIG_1);
1041 if (sGetChanStatus(cp) & CD_ACT)
1042 info->cd_status = 1;
1044 info->cd_status = 0;
1045 sDisRxStatusMode(cp);
1049 sEnInterrupts(cp, (TXINT_EN | MCINT_EN | RXINT_EN | SRCINT_EN | CHANINT_EN));
1050 sSetRxTrigger(cp, TRIG_1);
1053 sDisRxStatusMode(cp);
1057 sDisTxSoftFlowCtl(cp);
1062 info->flags |= ROCKET_INITIALIZED;
1065 * Set up the tty->alt_speed kludge
1067 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_HI)
1068 info->tty->alt_speed = 57600;
1069 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_VHI)
1070 info->tty->alt_speed = 115200;
1071 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_SHI)
1072 info->tty->alt_speed = 230400;
1073 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_WARP)
1074 info->tty->alt_speed = 460800;
1076 configure_r_port(info, NULL);
1077 if (tty->termios->c_cflag & CBAUD) {
1082 /* Starts (or resets) the maint polling loop */
1083 mod_timer(&rocket_timer, jiffies + POLL_PERIOD);
1085 retval = block_til_ready(tty, filp, info);
1087 #ifdef ROCKET_DEBUG_OPEN
1088 printk(KERN_INFO "rp_open returning after block_til_ready with %d\n", retval);
1096 * Exception handler that closes a serial port. info->count is considered critical.
1098 static void rp_close(struct tty_struct *tty, struct file *filp)
1100 struct r_port *info = (struct r_port *) tty->driver_data;
1101 unsigned long flags;
1105 if (rocket_paranoia_check(info, "rp_close"))
1108 #ifdef ROCKET_DEBUG_OPEN
1109 printk(KERN_INFO "rp_close ttyR%d, count = %d\n", info->line, info->count);
1112 if (tty_hung_up_p(filp))
1114 spin_lock_irqsave(&info->slock, flags);
1116 if ((tty->count == 1) && (info->count != 1)) {
1118 * Uh, oh. tty->count is 1, which means that the tty
1119 * structure will be freed. Info->count should always
1120 * be one in these conditions. If it's greater than
1121 * one, we've got real problems, since it means the
1122 * serial port won't be shutdown.
1124 printk(KERN_INFO "rp_close: bad serial port count; tty->count is 1, "
1125 "info->count is %d\n", info->count);
1128 if (--info->count < 0) {
1129 printk(KERN_INFO "rp_close: bad serial port count for ttyR%d: %d\n",
1130 info->line, info->count);
1134 spin_unlock_irqrestore(&info->slock, flags);
1137 info->flags |= ROCKET_CLOSING;
1138 spin_unlock_irqrestore(&info->slock, flags);
1140 cp = &info->channel;
1143 * Notify the line discpline to only process XON/XOFF characters
1148 * If transmission was throttled by the application request,
1149 * just flush the xmit buffer.
1151 if (tty->flow_stopped)
1152 rp_flush_buffer(tty);
1155 * Wait for the transmit buffer to clear
1157 if (info->closing_wait != ROCKET_CLOSING_WAIT_NONE)
1158 tty_wait_until_sent(tty, info->closing_wait);
1160 * Before we drop DTR, make sure the UART transmitter
1161 * has completely drained; this is especially
1162 * important if there is a transmit FIFO!
1164 timeout = (sGetTxCnt(cp) + 1) * HZ / info->cps;
1167 rp_wait_until_sent(tty, timeout);
1168 clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
1171 sDisInterrupts(cp, (TXINT_EN | MCINT_EN | RXINT_EN | SRCINT_EN | CHANINT_EN));
1173 sDisTxSoftFlowCtl(cp);
1181 if (TTY_DRIVER_FLUSH_BUFFER_EXISTS(tty))
1182 TTY_DRIVER_FLUSH_BUFFER(tty);
1184 tty_ldisc_flush(tty);
1186 clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
1188 if (info->blocked_open) {
1189 if (info->close_delay) {
1190 msleep_interruptible(jiffies_to_msecs(info->close_delay));
1192 wake_up_interruptible(&info->open_wait);
1194 if (info->xmit_buf) {
1195 free_page((unsigned long) info->xmit_buf);
1196 info->xmit_buf = NULL;
1199 info->flags &= ~(ROCKET_INITIALIZED | ROCKET_CLOSING | ROCKET_NORMAL_ACTIVE);
1201 wake_up_interruptible(&info->close_wait);
1202 atomic_dec(&rp_num_ports_open);
1204 #ifdef ROCKET_DEBUG_OPEN
1205 printk(KERN_INFO "rocket mod-- = %d...", atomic_read(&rp_num_ports_open));
1206 printk(KERN_INFO "rp_close ttyR%d complete shutdown\n", info->line);
1211 static void rp_set_termios(struct tty_struct *tty,
1212 struct termios *old_termios)
1214 struct r_port *info = (struct r_port *) tty->driver_data;
1218 if (rocket_paranoia_check(info, "rp_set_termios"))
1221 cflag = tty->termios->c_cflag;
1223 if (cflag == old_termios->c_cflag)
1227 * This driver doesn't support CS5 or CS6
1229 if (((cflag & CSIZE) == CS5) || ((cflag & CSIZE) == CS6))
1230 tty->termios->c_cflag =
1231 ((cflag & ~CSIZE) | (old_termios->c_cflag & CSIZE));
1233 configure_r_port(info, old_termios);
1235 cp = &info->channel;
1237 /* Handle transition to B0 status */
1238 if ((old_termios->c_cflag & CBAUD) && !(tty->termios->c_cflag & CBAUD)) {
1243 /* Handle transition away from B0 status */
1244 if (!(old_termios->c_cflag & CBAUD) && (tty->termios->c_cflag & CBAUD)) {
1245 if (!tty->hw_stopped || !(tty->termios->c_cflag & CRTSCTS))
1250 if ((old_termios->c_cflag & CRTSCTS) && !(tty->termios->c_cflag & CRTSCTS)) {
1251 tty->hw_stopped = 0;
1256 static void rp_break(struct tty_struct *tty, int break_state)
1258 struct r_port *info = (struct r_port *) tty->driver_data;
1259 unsigned long flags;
1261 if (rocket_paranoia_check(info, "rp_break"))
1264 spin_lock_irqsave(&info->slock, flags);
1265 if (break_state == -1)
1266 sSendBreak(&info->channel);
1268 sClrBreak(&info->channel);
1269 spin_unlock_irqrestore(&info->slock, flags);
1273 * sGetChanRI used to be a macro in rocket_int.h. When the functionality for
1274 * the UPCI boards was added, it was decided to make this a function because
1275 * the macro was getting too complicated. All cases except the first one
1276 * (UPCIRingInd) are taken directly from the original macro.
1278 static int sGetChanRI(CHANNEL_T * ChP)
1280 CONTROLLER_t *CtlP = ChP->CtlP;
1281 int ChanNum = ChP->ChanNum;
1284 if (CtlP->UPCIRingInd)
1285 RingInd = !(sInB(CtlP->UPCIRingInd) & sBitMapSetTbl[ChanNum]);
1286 else if (CtlP->AltChanRingIndicator)
1287 RingInd = sInB((ByteIO_t) (ChP->ChanStat + 8)) & DSR_ACT;
1288 else if (CtlP->boardType == ROCKET_TYPE_PC104)
1289 RingInd = !(sInB(CtlP->AiopIO[3]) & sBitMapSetTbl[ChanNum]);
1294 /********************************************************************************************/
1295 /* Here are the routines used by rp_ioctl. These are all called from exception handlers. */
1298 * Returns the state of the serial modem control lines. These next 2 functions
1299 * are the way kernel versions > 2.5 handle modem control lines rather than IOCTLs.
1301 static int rp_tiocmget(struct tty_struct *tty, struct file *file)
1303 struct r_port *info = (struct r_port *)tty->driver_data;
1304 unsigned int control, result, ChanStatus;
1306 ChanStatus = sGetChanStatusLo(&info->channel);
1307 control = info->channel.TxControl[3];
1308 result = ((control & SET_RTS) ? TIOCM_RTS : 0) |
1309 ((control & SET_DTR) ? TIOCM_DTR : 0) |
1310 ((ChanStatus & CD_ACT) ? TIOCM_CAR : 0) |
1311 (sGetChanRI(&info->channel) ? TIOCM_RNG : 0) |
1312 ((ChanStatus & DSR_ACT) ? TIOCM_DSR : 0) |
1313 ((ChanStatus & CTS_ACT) ? TIOCM_CTS : 0);
1319 * Sets the modem control lines
1321 static int rp_tiocmset(struct tty_struct *tty, struct file *file,
1322 unsigned int set, unsigned int clear)
1324 struct r_port *info = (struct r_port *)tty->driver_data;
1326 if (set & TIOCM_RTS)
1327 info->channel.TxControl[3] |= SET_RTS;
1328 if (set & TIOCM_DTR)
1329 info->channel.TxControl[3] |= SET_DTR;
1330 if (clear & TIOCM_RTS)
1331 info->channel.TxControl[3] &= ~SET_RTS;
1332 if (clear & TIOCM_DTR)
1333 info->channel.TxControl[3] &= ~SET_DTR;
1335 sOutDW(info->channel.IndexAddr, *(DWord_t *) & (info->channel.TxControl[0]));
1339 static int get_config(struct r_port *info, struct rocket_config __user *retinfo)
1341 struct rocket_config tmp;
1345 memset(&tmp, 0, sizeof (tmp));
1346 tmp.line = info->line;
1347 tmp.flags = info->flags;
1348 tmp.close_delay = info->close_delay;
1349 tmp.closing_wait = info->closing_wait;
1350 tmp.port = rcktpt_io_addr[(info->line >> 5) & 3];
1352 if (copy_to_user(retinfo, &tmp, sizeof (*retinfo)))
1357 static int set_config(struct r_port *info, struct rocket_config __user *new_info)
1359 struct rocket_config new_serial;
1361 if (copy_from_user(&new_serial, new_info, sizeof (new_serial)))
1364 if (!capable(CAP_SYS_ADMIN))
1366 if ((new_serial.flags & ~ROCKET_USR_MASK) != (info->flags & ~ROCKET_USR_MASK))
1368 info->flags = ((info->flags & ~ROCKET_USR_MASK) | (new_serial.flags & ROCKET_USR_MASK));
1369 configure_r_port(info, NULL);
1373 info->flags = ((info->flags & ~ROCKET_FLAGS) | (new_serial.flags & ROCKET_FLAGS));
1374 info->close_delay = new_serial.close_delay;
1375 info->closing_wait = new_serial.closing_wait;
1377 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_HI)
1378 info->tty->alt_speed = 57600;
1379 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_VHI)
1380 info->tty->alt_speed = 115200;
1381 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_SHI)
1382 info->tty->alt_speed = 230400;
1383 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_WARP)
1384 info->tty->alt_speed = 460800;
1386 configure_r_port(info, NULL);
1391 * This function fills in a rocket_ports struct with information
1392 * about what boards/ports are in the system. This info is passed
1393 * to user space. See setrocket.c where the info is used to create
1394 * the /dev/ttyRx ports.
1396 static int get_ports(struct r_port *info, struct rocket_ports __user *retports)
1398 struct rocket_ports tmp;
1403 memset(&tmp, 0, sizeof (tmp));
1404 tmp.tty_major = rocket_driver->major;
1406 for (board = 0; board < 4; board++) {
1407 tmp.rocketModel[board].model = rocketModel[board].model;
1408 strcpy(tmp.rocketModel[board].modelString, rocketModel[board].modelString);
1409 tmp.rocketModel[board].numPorts = rocketModel[board].numPorts;
1410 tmp.rocketModel[board].loadrm2 = rocketModel[board].loadrm2;
1411 tmp.rocketModel[board].startingPortNumber = rocketModel[board].startingPortNumber;
1413 if (copy_to_user(retports, &tmp, sizeof (*retports)))
1418 static int reset_rm2(struct r_port *info, void __user *arg)
1422 if (copy_from_user(&reset, arg, sizeof (int)))
1427 if (rcktpt_type[info->board] != ROCKET_TYPE_MODEMII &&
1428 rcktpt_type[info->board] != ROCKET_TYPE_MODEMIII)
1431 if (info->ctlp->BusType == isISA)
1432 sModemReset(info->ctlp, info->chan, reset);
1434 sPCIModemReset(info->ctlp, info->chan, reset);
1439 static int get_version(struct r_port *info, struct rocket_version __user *retvers)
1441 if (copy_to_user(retvers, &driver_version, sizeof (*retvers)))
1446 /* IOCTL call handler into the driver */
1447 static int rp_ioctl(struct tty_struct *tty, struct file *file,
1448 unsigned int cmd, unsigned long arg)
1450 struct r_port *info = (struct r_port *) tty->driver_data;
1451 void __user *argp = (void __user *)arg;
1453 if (cmd != RCKP_GET_PORTS && rocket_paranoia_check(info, "rp_ioctl"))
1457 case RCKP_GET_STRUCT:
1458 if (copy_to_user(argp, info, sizeof (struct r_port)))
1461 case RCKP_GET_CONFIG:
1462 return get_config(info, argp);
1463 case RCKP_SET_CONFIG:
1464 return set_config(info, argp);
1465 case RCKP_GET_PORTS:
1466 return get_ports(info, argp);
1467 case RCKP_RESET_RM2:
1468 return reset_rm2(info, argp);
1469 case RCKP_GET_VERSION:
1470 return get_version(info, argp);
1472 return -ENOIOCTLCMD;
1477 static void rp_send_xchar(struct tty_struct *tty, char ch)
1479 struct r_port *info = (struct r_port *) tty->driver_data;
1482 if (rocket_paranoia_check(info, "rp_send_xchar"))
1485 cp = &info->channel;
1487 sWriteTxPrioByte(cp, ch);
1489 sWriteTxByte(sGetTxRxDataIO(cp), ch);
1492 static void rp_throttle(struct tty_struct *tty)
1494 struct r_port *info = (struct r_port *) tty->driver_data;
1497 #ifdef ROCKET_DEBUG_THROTTLE
1498 printk(KERN_INFO "throttle %s: %d....\n", tty->name,
1499 tty->ldisc.chars_in_buffer(tty));
1502 if (rocket_paranoia_check(info, "rp_throttle"))
1505 cp = &info->channel;
1507 rp_send_xchar(tty, STOP_CHAR(tty));
1509 sClrRTS(&info->channel);
1512 static void rp_unthrottle(struct tty_struct *tty)
1514 struct r_port *info = (struct r_port *) tty->driver_data;
1516 #ifdef ROCKET_DEBUG_THROTTLE
1517 printk(KERN_INFO "unthrottle %s: %d....\n", tty->name,
1518 tty->ldisc.chars_in_buffer(tty));
1521 if (rocket_paranoia_check(info, "rp_throttle"))
1524 cp = &info->channel;
1526 rp_send_xchar(tty, START_CHAR(tty));
1528 sSetRTS(&info->channel);
1532 * ------------------------------------------------------------
1533 * rp_stop() and rp_start()
1535 * This routines are called before setting or resetting tty->stopped.
1536 * They enable or disable transmitter interrupts, as necessary.
1537 * ------------------------------------------------------------
1539 static void rp_stop(struct tty_struct *tty)
1541 struct r_port *info = (struct r_port *) tty->driver_data;
1543 #ifdef ROCKET_DEBUG_FLOW
1544 printk(KERN_INFO "stop %s: %d %d....\n", tty->name,
1545 info->xmit_cnt, info->xmit_fifo_room);
1548 if (rocket_paranoia_check(info, "rp_stop"))
1551 if (sGetTxCnt(&info->channel))
1552 sDisTransmit(&info->channel);
1555 static void rp_start(struct tty_struct *tty)
1557 struct r_port *info = (struct r_port *) tty->driver_data;
1559 #ifdef ROCKET_DEBUG_FLOW
1560 printk(KERN_INFO "start %s: %d %d....\n", tty->name,
1561 info->xmit_cnt, info->xmit_fifo_room);
1564 if (rocket_paranoia_check(info, "rp_stop"))
1567 sEnTransmit(&info->channel);
1568 set_bit((info->aiop * 8) + info->chan,
1569 (void *) &xmit_flags[info->board]);
1573 * rp_wait_until_sent() --- wait until the transmitter is empty
1575 static void rp_wait_until_sent(struct tty_struct *tty, int timeout)
1577 struct r_port *info = (struct r_port *) tty->driver_data;
1579 unsigned long orig_jiffies;
1580 int check_time, exit_time;
1583 if (rocket_paranoia_check(info, "rp_wait_until_sent"))
1586 cp = &info->channel;
1588 orig_jiffies = jiffies;
1589 #ifdef ROCKET_DEBUG_WAIT_UNTIL_SENT
1590 printk(KERN_INFO "In RP_wait_until_sent(%d) (jiff=%lu)...", timeout,
1592 printk(KERN_INFO "cps=%d...", info->cps);
1595 txcnt = sGetTxCnt(cp);
1597 if (sGetChanStatusLo(cp) & TXSHRMT)
1599 check_time = (HZ / info->cps) / 5;
1601 check_time = HZ * txcnt / info->cps;
1604 exit_time = orig_jiffies + timeout - jiffies;
1607 if (exit_time < check_time)
1608 check_time = exit_time;
1610 if (check_time == 0)
1612 #ifdef ROCKET_DEBUG_WAIT_UNTIL_SENT
1613 printk(KERN_INFO "txcnt = %d (jiff=%lu,check=%d)...", txcnt, jiffies, check_time);
1615 msleep_interruptible(jiffies_to_msecs(check_time));
1616 if (signal_pending(current))
1619 current->state = TASK_RUNNING;
1620 #ifdef ROCKET_DEBUG_WAIT_UNTIL_SENT
1621 printk(KERN_INFO "txcnt = %d (jiff=%lu)...done\n", txcnt, jiffies);
1626 * rp_hangup() --- called by tty_hangup() when a hangup is signaled.
1628 static void rp_hangup(struct tty_struct *tty)
1631 struct r_port *info = (struct r_port *) tty->driver_data;
1633 if (rocket_paranoia_check(info, "rp_hangup"))
1636 #if (defined(ROCKET_DEBUG_OPEN) || defined(ROCKET_DEBUG_HANGUP))
1637 printk(KERN_INFO "rp_hangup of ttyR%d...", info->line);
1639 rp_flush_buffer(tty);
1640 if (info->flags & ROCKET_CLOSING)
1643 atomic_dec(&rp_num_ports_open);
1644 clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
1647 info->flags &= ~ROCKET_NORMAL_ACTIVE;
1650 cp = &info->channel;
1653 sDisInterrupts(cp, (TXINT_EN | MCINT_EN | RXINT_EN | SRCINT_EN | CHANINT_EN));
1655 sDisTxSoftFlowCtl(cp);
1657 info->flags &= ~ROCKET_INITIALIZED;
1659 wake_up_interruptible(&info->open_wait);
1663 * Exception handler - write char routine. The RocketPort driver uses a
1664 * double-buffering strategy, with the twist that if the in-memory CPU
1665 * buffer is empty, and there's space in the transmit FIFO, the
1666 * writing routines will write directly to transmit FIFO.
1667 * Write buffer and counters protected by spinlocks
1669 static void rp_put_char(struct tty_struct *tty, unsigned char ch)
1671 struct r_port *info = (struct r_port *) tty->driver_data;
1673 unsigned long flags;
1675 if (rocket_paranoia_check(info, "rp_put_char"))
1678 /* Grab the port write semaphore, locking out other processes that try to write to this port */
1679 down(&info->write_sem);
1681 #ifdef ROCKET_DEBUG_WRITE
1682 printk(KERN_INFO "rp_put_char %c...", ch);
1685 spin_lock_irqsave(&info->slock, flags);
1686 cp = &info->channel;
1688 if (!tty->stopped && !tty->hw_stopped && info->xmit_fifo_room == 0)
1689 info->xmit_fifo_room = TXFIFO_SIZE - sGetTxCnt(cp);
1691 if (tty->stopped || tty->hw_stopped || info->xmit_fifo_room == 0 || info->xmit_cnt != 0) {
1692 info->xmit_buf[info->xmit_head++] = ch;
1693 info->xmit_head &= XMIT_BUF_SIZE - 1;
1695 set_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
1697 sOutB(sGetTxRxDataIO(cp), ch);
1698 info->xmit_fifo_room--;
1700 spin_unlock_irqrestore(&info->slock, flags);
1701 up(&info->write_sem);
1705 * Exception handler - write routine, called when user app writes to the device.
1706 * A per port write semaphore is used to protect from another process writing to
1707 * this port at the same time. This other process could be running on the other CPU
1708 * or get control of the CPU if the copy_from_user() blocks due to a page fault (swapped out).
1709 * Spinlocks protect the info xmit members.
1711 static int rp_write(struct tty_struct *tty,
1712 const unsigned char *buf, int count)
1714 struct r_port *info = (struct r_port *) tty->driver_data;
1716 const unsigned char *b;
1718 unsigned long flags;
1720 if (count <= 0 || rocket_paranoia_check(info, "rp_write"))
1723 down_interruptible(&info->write_sem);
1725 #ifdef ROCKET_DEBUG_WRITE
1726 printk(KERN_INFO "rp_write %d chars...", count);
1728 cp = &info->channel;
1730 if (!tty->stopped && !tty->hw_stopped && info->xmit_fifo_room < count)
1731 info->xmit_fifo_room = TXFIFO_SIZE - sGetTxCnt(cp);
1734 * If the write queue for the port is empty, and there is FIFO space, stuff bytes
1735 * into FIFO. Use the write queue for temp storage.
1737 if (!tty->stopped && !tty->hw_stopped && info->xmit_cnt == 0 && info->xmit_fifo_room > 0) {
1738 c = min(count, info->xmit_fifo_room);
1741 /* Push data into FIFO, 2 bytes at a time */
1742 sOutStrW(sGetTxRxDataIO(cp), (unsigned short *) b, c / 2);
1744 /* If there is a byte remaining, write it */
1746 sOutB(sGetTxRxDataIO(cp), b[c - 1]);
1752 spin_lock_irqsave(&info->slock, flags);
1753 info->xmit_fifo_room -= c;
1754 spin_unlock_irqrestore(&info->slock, flags);
1757 /* If count is zero, we wrote it all and are done */
1761 /* Write remaining data into the port's xmit_buf */
1763 if (info->tty == 0) /* Seemingly obligatory check... */
1766 c = min(count, min(XMIT_BUF_SIZE - info->xmit_cnt - 1, XMIT_BUF_SIZE - info->xmit_head));
1771 memcpy(info->xmit_buf + info->xmit_head, b, c);
1773 spin_lock_irqsave(&info->slock, flags);
1775 (info->xmit_head + c) & (XMIT_BUF_SIZE - 1);
1776 info->xmit_cnt += c;
1777 spin_unlock_irqrestore(&info->slock, flags);
1784 if ((retval > 0) && !tty->stopped && !tty->hw_stopped)
1785 set_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
1788 if (info->xmit_cnt < WAKEUP_CHARS) {
1790 wake_up_interruptible(&tty->write_wait);
1791 #ifdef ROCKETPORT_HAVE_POLL_WAIT
1792 wake_up_interruptible(&tty->poll_wait);
1795 up(&info->write_sem);
1800 * Return the number of characters that can be sent. We estimate
1801 * only using the in-memory transmit buffer only, and ignore the
1802 * potential space in the transmit FIFO.
1804 static int rp_write_room(struct tty_struct *tty)
1806 struct r_port *info = (struct r_port *) tty->driver_data;
1809 if (rocket_paranoia_check(info, "rp_write_room"))
1812 ret = XMIT_BUF_SIZE - info->xmit_cnt - 1;
1815 #ifdef ROCKET_DEBUG_WRITE
1816 printk(KERN_INFO "rp_write_room returns %d...", ret);
1822 * Return the number of characters in the buffer. Again, this only
1823 * counts those characters in the in-memory transmit buffer.
1825 static int rp_chars_in_buffer(struct tty_struct *tty)
1827 struct r_port *info = (struct r_port *) tty->driver_data;
1830 if (rocket_paranoia_check(info, "rp_chars_in_buffer"))
1833 cp = &info->channel;
1835 #ifdef ROCKET_DEBUG_WRITE
1836 printk(KERN_INFO "rp_chars_in_buffer returns %d...", info->xmit_cnt);
1838 return info->xmit_cnt;
1842 * Flushes the TX fifo for a port, deletes data in the xmit_buf stored in the
1843 * r_port struct for the port. Note that spinlock are used to protect info members,
1844 * do not call this function if the spinlock is already held.
1846 static void rp_flush_buffer(struct tty_struct *tty)
1848 struct r_port *info = (struct r_port *) tty->driver_data;
1850 unsigned long flags;
1852 if (rocket_paranoia_check(info, "rp_flush_buffer"))
1855 spin_lock_irqsave(&info->slock, flags);
1856 info->xmit_cnt = info->xmit_head = info->xmit_tail = 0;
1857 spin_unlock_irqrestore(&info->slock, flags);
1859 wake_up_interruptible(&tty->write_wait);
1860 #ifdef ROCKETPORT_HAVE_POLL_WAIT
1861 wake_up_interruptible(&tty->poll_wait);
1865 cp = &info->channel;
1872 * Called when a PCI card is found. Retrieves and stores model information,
1873 * init's aiopic and serial port hardware.
1874 * Inputs: i is the board number (0-n)
1876 static __init int register_PCI(int i, struct pci_dev *dev)
1878 int num_aiops, aiop, max_num_aiops, num_chan, chan;
1879 unsigned int aiopio[MAX_AIOPS_PER_BOARD];
1880 char *str, *board_type;
1884 int altChanRingIndicator = 0;
1885 int ports_per_aiop = 8;
1887 unsigned int class_rev;
1888 WordIO_t ConfigIO = 0;
1889 ByteIO_t UPCIRingInd = 0;
1891 if (!dev || pci_enable_device(dev))
1894 rcktpt_io_addr[i] = pci_resource_start(dev, 0);
1895 ret = pci_read_config_dword(dev, PCI_CLASS_REVISION, &class_rev);
1898 printk(KERN_INFO " Error during register_PCI(), unable to read config dword \n");
1902 rcktpt_type[i] = ROCKET_TYPE_NORMAL;
1903 rocketModel[i].loadrm2 = 0;
1904 rocketModel[i].startingPortNumber = nextLineNumber;
1906 /* Depending on the model, set up some config variables */
1907 switch (dev->device) {
1908 case PCI_DEVICE_ID_RP4QUAD:
1912 rocketModel[i].model = MODEL_RP4QUAD;
1913 strcpy(rocketModel[i].modelString, "RocketPort 4 port w/quad cable");
1914 rocketModel[i].numPorts = 4;
1916 case PCI_DEVICE_ID_RP8OCTA:
1919 rocketModel[i].model = MODEL_RP8OCTA;
1920 strcpy(rocketModel[i].modelString, "RocketPort 8 port w/octa cable");
1921 rocketModel[i].numPorts = 8;
1923 case PCI_DEVICE_ID_URP8OCTA:
1926 rocketModel[i].model = MODEL_UPCI_RP8OCTA;
1927 strcpy(rocketModel[i].modelString, "RocketPort UPCI 8 port w/octa cable");
1928 rocketModel[i].numPorts = 8;
1930 case PCI_DEVICE_ID_RP8INTF:
1933 rocketModel[i].model = MODEL_RP8INTF;
1934 strcpy(rocketModel[i].modelString, "RocketPort 8 port w/external I/F");
1935 rocketModel[i].numPorts = 8;
1937 case PCI_DEVICE_ID_URP8INTF:
1940 rocketModel[i].model = MODEL_UPCI_RP8INTF;
1941 strcpy(rocketModel[i].modelString, "RocketPort UPCI 8 port w/external I/F");
1942 rocketModel[i].numPorts = 8;
1944 case PCI_DEVICE_ID_RP8J:
1947 rocketModel[i].model = MODEL_RP8J;
1948 strcpy(rocketModel[i].modelString, "RocketPort 8 port w/RJ11 connectors");
1949 rocketModel[i].numPorts = 8;
1951 case PCI_DEVICE_ID_RP4J:
1955 rocketModel[i].model = MODEL_RP4J;
1956 strcpy(rocketModel[i].modelString, "RocketPort 4 port w/RJ45 connectors");
1957 rocketModel[i].numPorts = 4;
1959 case PCI_DEVICE_ID_RP8SNI:
1960 str = "8 (DB78 Custom)";
1962 rocketModel[i].model = MODEL_RP8SNI;
1963 strcpy(rocketModel[i].modelString, "RocketPort 8 port w/ custom DB78");
1964 rocketModel[i].numPorts = 8;
1966 case PCI_DEVICE_ID_RP16SNI:
1967 str = "16 (DB78 Custom)";
1969 rocketModel[i].model = MODEL_RP16SNI;
1970 strcpy(rocketModel[i].modelString, "RocketPort 16 port w/ custom DB78");
1971 rocketModel[i].numPorts = 16;
1973 case PCI_DEVICE_ID_RP16INTF:
1976 rocketModel[i].model = MODEL_RP16INTF;
1977 strcpy(rocketModel[i].modelString, "RocketPort 16 port w/external I/F");
1978 rocketModel[i].numPorts = 16;
1980 case PCI_DEVICE_ID_URP16INTF:
1983 rocketModel[i].model = MODEL_UPCI_RP16INTF;
1984 strcpy(rocketModel[i].modelString, "RocketPort UPCI 16 port w/external I/F");
1985 rocketModel[i].numPorts = 16;
1987 case PCI_DEVICE_ID_CRP16INTF:
1990 rocketModel[i].model = MODEL_CPCI_RP16INTF;
1991 strcpy(rocketModel[i].modelString, "RocketPort Compact PCI 16 port w/external I/F");
1992 rocketModel[i].numPorts = 16;
1994 case PCI_DEVICE_ID_RP32INTF:
1997 rocketModel[i].model = MODEL_RP32INTF;
1998 strcpy(rocketModel[i].modelString, "RocketPort 32 port w/external I/F");
1999 rocketModel[i].numPorts = 32;
2001 case PCI_DEVICE_ID_URP32INTF:
2004 rocketModel[i].model = MODEL_UPCI_RP32INTF;
2005 strcpy(rocketModel[i].modelString, "RocketPort UPCI 32 port w/external I/F");
2006 rocketModel[i].numPorts = 32;
2008 case PCI_DEVICE_ID_RPP4:
2009 str = "Plus Quadcable";
2012 altChanRingIndicator++;
2014 rocketModel[i].model = MODEL_RPP4;
2015 strcpy(rocketModel[i].modelString, "RocketPort Plus 4 port");
2016 rocketModel[i].numPorts = 4;
2018 case PCI_DEVICE_ID_RPP8:
2019 str = "Plus Octacable";
2022 altChanRingIndicator++;
2024 rocketModel[i].model = MODEL_RPP8;
2025 strcpy(rocketModel[i].modelString, "RocketPort Plus 8 port");
2026 rocketModel[i].numPorts = 8;
2028 case PCI_DEVICE_ID_RP2_232:
2029 str = "Plus 2 (RS-232)";
2032 altChanRingIndicator++;
2034 rocketModel[i].model = MODEL_RP2_232;
2035 strcpy(rocketModel[i].modelString, "RocketPort Plus 2 port RS232");
2036 rocketModel[i].numPorts = 2;
2038 case PCI_DEVICE_ID_RP2_422:
2039 str = "Plus 2 (RS-422)";
2042 altChanRingIndicator++;
2044 rocketModel[i].model = MODEL_RP2_422;
2045 strcpy(rocketModel[i].modelString, "RocketPort Plus 2 port RS422");
2046 rocketModel[i].numPorts = 2;
2048 case PCI_DEVICE_ID_RP6M:
2054 /* If class_rev is 1, the rocketmodem flash must be loaded. If it is 2 it is a "socketed" version. */
2055 if ((class_rev & 0xFF) == 1) {
2056 rcktpt_type[i] = ROCKET_TYPE_MODEMII;
2057 rocketModel[i].loadrm2 = 1;
2059 rcktpt_type[i] = ROCKET_TYPE_MODEM;
2062 rocketModel[i].model = MODEL_RP6M;
2063 strcpy(rocketModel[i].modelString, "RocketModem 6 port");
2064 rocketModel[i].numPorts = 6;
2066 case PCI_DEVICE_ID_RP4M:
2070 if ((class_rev & 0xFF) == 1) {
2071 rcktpt_type[i] = ROCKET_TYPE_MODEMII;
2072 rocketModel[i].loadrm2 = 1;
2074 rcktpt_type[i] = ROCKET_TYPE_MODEM;
2077 rocketModel[i].model = MODEL_RP4M;
2078 strcpy(rocketModel[i].modelString, "RocketModem 4 port");
2079 rocketModel[i].numPorts = 4;
2082 str = "(unknown/unsupported)";
2088 * Check for UPCI boards.
2091 switch (dev->device) {
2092 case PCI_DEVICE_ID_URP32INTF:
2093 case PCI_DEVICE_ID_URP8INTF:
2094 case PCI_DEVICE_ID_URP16INTF:
2095 case PCI_DEVICE_ID_CRP16INTF:
2096 case PCI_DEVICE_ID_URP8OCTA:
2097 rcktpt_io_addr[i] = pci_resource_start(dev, 2);
2098 ConfigIO = pci_resource_start(dev, 1);
2099 if (dev->device == PCI_DEVICE_ID_URP8OCTA) {
2100 UPCIRingInd = rcktpt_io_addr[i] + _PCI_9030_RING_IND;
2103 * Check for octa or quad cable.
2106 (sInW(ConfigIO + _PCI_9030_GPIO_CTRL) &
2107 PCI_GPIO_CTRL_8PORT)) {
2110 rocketModel[i].numPorts = 4;
2114 case PCI_DEVICE_ID_UPCI_RM3_8PORT:
2117 rocketModel[i].model = MODEL_UPCI_RM3_8PORT;
2118 strcpy(rocketModel[i].modelString, "RocketModem III 8 port");
2119 rocketModel[i].numPorts = 8;
2120 rcktpt_io_addr[i] = pci_resource_start(dev, 2);
2121 UPCIRingInd = rcktpt_io_addr[i] + _PCI_9030_RING_IND;
2122 ConfigIO = pci_resource_start(dev, 1);
2123 rcktpt_type[i] = ROCKET_TYPE_MODEMIII;
2125 case PCI_DEVICE_ID_UPCI_RM3_4PORT:
2128 rocketModel[i].model = MODEL_UPCI_RM3_4PORT;
2129 strcpy(rocketModel[i].modelString, "RocketModem III 4 port");
2130 rocketModel[i].numPorts = 4;
2131 rcktpt_io_addr[i] = pci_resource_start(dev, 2);
2132 UPCIRingInd = rcktpt_io_addr[i] + _PCI_9030_RING_IND;
2133 ConfigIO = pci_resource_start(dev, 1);
2134 rcktpt_type[i] = ROCKET_TYPE_MODEMIII;
2140 switch (rcktpt_type[i]) {
2141 case ROCKET_TYPE_MODEM:
2142 board_type = "RocketModem";
2144 case ROCKET_TYPE_MODEMII:
2145 board_type = "RocketModem II";
2147 case ROCKET_TYPE_MODEMIII:
2148 board_type = "RocketModem III";
2151 board_type = "RocketPort";
2156 sClockPrescale = 0x12; /* mod 2 (divide by 3) */
2157 rp_baud_base[i] = 921600;
2160 * If support_low_speed is set, use the slow clock
2161 * prescale, which supports 50 bps
2163 if (support_low_speed) {
2164 /* mod 9 (divide by 10) prescale */
2165 sClockPrescale = 0x19;
2166 rp_baud_base[i] = 230400;
2168 /* mod 4 (devide by 5) prescale */
2169 sClockPrescale = 0x14;
2170 rp_baud_base[i] = 460800;
2174 for (aiop = 0; aiop < max_num_aiops; aiop++)
2175 aiopio[aiop] = rcktpt_io_addr[i] + (aiop * 0x40);
2176 ctlp = sCtlNumToCtlPtr(i);
2177 num_aiops = sPCIInitController(ctlp, i, aiopio, max_num_aiops, ConfigIO, 0, FREQ_DIS, 0, altChanRingIndicator, UPCIRingInd);
2178 for (aiop = 0; aiop < max_num_aiops; aiop++)
2179 ctlp->AiopNumChan[aiop] = ports_per_aiop;
2181 printk("Comtrol PCI controller #%d ID 0x%x found in bus:slot:fn %s at address %04lx, "
2182 "%d AIOP(s) (%s)\n", i, dev->device, pci_name(dev),
2183 rcktpt_io_addr[i], num_aiops, rocketModel[i].modelString);
2184 printk(KERN_INFO "Installing %s, creating /dev/ttyR%d - %ld\n",
2185 rocketModel[i].modelString,
2186 rocketModel[i].startingPortNumber,
2187 rocketModel[i].startingPortNumber +
2188 rocketModel[i].numPorts - 1);
2190 if (num_aiops <= 0) {
2191 rcktpt_io_addr[i] = 0;
2196 /* Reset the AIOPIC, init the serial ports */
2197 for (aiop = 0; aiop < num_aiops; aiop++) {
2198 sResetAiopByNum(ctlp, aiop);
2199 num_chan = ports_per_aiop;
2200 for (chan = 0; chan < num_chan; chan++)
2201 init_r_port(i, aiop, chan, dev);
2204 /* Rocket modems must be reset */
2205 if ((rcktpt_type[i] == ROCKET_TYPE_MODEM) ||
2206 (rcktpt_type[i] == ROCKET_TYPE_MODEMII) ||
2207 (rcktpt_type[i] == ROCKET_TYPE_MODEMIII)) {
2208 num_chan = ports_per_aiop;
2209 for (chan = 0; chan < num_chan; chan++)
2210 sPCIModemReset(ctlp, chan, 1);
2212 for (chan = 0; chan < num_chan; chan++)
2213 sPCIModemReset(ctlp, chan, 0);
2215 rmSpeakerReset(ctlp, rocketModel[i].model);
2221 * Probes for PCI cards, inits them if found
2222 * Input: board_found = number of ISA boards already found, or the
2223 * starting board number
2224 * Returns: Number of PCI boards found
2226 static int __init init_PCI(int boards_found)
2228 struct pci_dev *dev = NULL;
2231 /* Work through the PCI device list, pulling out ours */
2232 while ((dev = pci_find_device(PCI_VENDOR_ID_RP, PCI_ANY_ID, dev))) {
2233 if (register_PCI(count + boards_found, dev))
2239 #endif /* CONFIG_PCI */
2242 * Probes for ISA cards
2243 * Input: i = the board number to look for
2244 * Returns: 1 if board found, 0 else
2246 static int __init init_ISA(int i)
2248 int num_aiops, num_chan = 0, total_num_chan = 0;
2250 unsigned int aiopio[MAX_AIOPS_PER_BOARD];
2254 /* If io_addr is zero, no board configured */
2255 if (rcktpt_io_addr[i] == 0)
2258 /* Reserve the IO region */
2259 if (!request_region(rcktpt_io_addr[i], 64, "Comtrol RocketPort")) {
2260 printk(KERN_INFO "Unable to reserve IO region for configured ISA RocketPort at address 0x%lx, board not installed...\n", rcktpt_io_addr[i]);
2261 rcktpt_io_addr[i] = 0;
2265 ctlp = sCtlNumToCtlPtr(i);
2267 ctlp->boardType = rcktpt_type[i];
2269 switch (rcktpt_type[i]) {
2270 case ROCKET_TYPE_PC104:
2271 type_string = "(PC104)";
2273 case ROCKET_TYPE_MODEM:
2274 type_string = "(RocketModem)";
2276 case ROCKET_TYPE_MODEMII:
2277 type_string = "(RocketModem II)";
2285 * If support_low_speed is set, use the slow clock prescale,
2286 * which supports 50 bps
2288 if (support_low_speed) {
2289 sClockPrescale = 0x19; /* mod 9 (divide by 10) prescale */
2290 rp_baud_base[i] = 230400;
2292 sClockPrescale = 0x14; /* mod 4 (devide by 5) prescale */
2293 rp_baud_base[i] = 460800;
2296 for (aiop = 0; aiop < MAX_AIOPS_PER_BOARD; aiop++)
2297 aiopio[aiop] = rcktpt_io_addr[i] + (aiop * 0x400);
2299 num_aiops = sInitController(ctlp, i, controller + (i * 0x400), aiopio, MAX_AIOPS_PER_BOARD, 0, FREQ_DIS, 0);
2301 if (ctlp->boardType == ROCKET_TYPE_PC104) {
2302 sEnAiop(ctlp, 2); /* only one AIOPIC, but these */
2303 sEnAiop(ctlp, 3); /* CSels used for other stuff */
2306 /* If something went wrong initing the AIOP's release the ISA IO memory */
2307 if (num_aiops <= 0) {
2308 release_region(rcktpt_io_addr[i], 64);
2309 rcktpt_io_addr[i] = 0;
2313 rocketModel[i].startingPortNumber = nextLineNumber;
2315 for (aiop = 0; aiop < num_aiops; aiop++) {
2316 sResetAiopByNum(ctlp, aiop);
2317 sEnAiop(ctlp, aiop);
2318 num_chan = sGetAiopNumChan(ctlp, aiop);
2319 total_num_chan += num_chan;
2320 for (chan = 0; chan < num_chan; chan++)
2321 init_r_port(i, aiop, chan, NULL);
2324 if ((rcktpt_type[i] == ROCKET_TYPE_MODEM) || (rcktpt_type[i] == ROCKET_TYPE_MODEMII)) {
2325 num_chan = sGetAiopNumChan(ctlp, 0);
2326 total_num_chan = num_chan;
2327 for (chan = 0; chan < num_chan; chan++)
2328 sModemReset(ctlp, chan, 1);
2330 for (chan = 0; chan < num_chan; chan++)
2331 sModemReset(ctlp, chan, 0);
2333 strcpy(rocketModel[i].modelString, "RocketModem ISA");
2335 strcpy(rocketModel[i].modelString, "RocketPort ISA");
2337 rocketModel[i].numPorts = total_num_chan;
2338 rocketModel[i].model = MODEL_ISA;
2340 printk(KERN_INFO "RocketPort ISA card #%d found at 0x%lx - %d AIOPs %s\n",
2341 i, rcktpt_io_addr[i], num_aiops, type_string);
2343 printk(KERN_INFO "Installing %s, creating /dev/ttyR%d - %ld\n",
2344 rocketModel[i].modelString,
2345 rocketModel[i].startingPortNumber,
2346 rocketModel[i].startingPortNumber +
2347 rocketModel[i].numPorts - 1);
2352 static struct tty_operations rocket_ops = {
2356 .put_char = rp_put_char,
2357 .write_room = rp_write_room,
2358 .chars_in_buffer = rp_chars_in_buffer,
2359 .flush_buffer = rp_flush_buffer,
2361 .throttle = rp_throttle,
2362 .unthrottle = rp_unthrottle,
2363 .set_termios = rp_set_termios,
2366 .hangup = rp_hangup,
2367 .break_ctl = rp_break,
2368 .send_xchar = rp_send_xchar,
2369 .wait_until_sent = rp_wait_until_sent,
2370 .tiocmget = rp_tiocmget,
2371 .tiocmset = rp_tiocmset,
2375 * The module "startup" routine; it's run when the module is loaded.
2377 static int __init rp_init(void)
2379 int retval, 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 * Set up the timer channel.
2391 init_timer(&rocket_timer);
2392 rocket_timer.function = rp_do_poll;
2395 * Initialize the array of pointers to our own internal state
2398 memset(rp_table, 0, sizeof (rp_table));
2399 memset(xmit_flags, 0, sizeof (xmit_flags));
2401 for (i = 0; i < MAX_RP_PORTS; i++)
2404 memset(rocketModel, 0, sizeof (rocketModel));
2407 * If board 1 is non-zero, there is at least one ISA configured. If controller is
2408 * zero, use the default controller IO address of board1 + 0x40.
2411 if (controller == 0)
2412 controller = board1 + 0x40;
2414 controller = 0; /* Used as a flag, meaning no ISA boards */
2417 /* If an ISA card is configured, reserve the 4 byte IO space for the Mudbac controller */
2418 if (controller && (!request_region(controller, 4, "Comtrol RocketPort"))) {
2419 printk(KERN_INFO "Unable to reserve IO region for first configured ISA RocketPort controller 0x%lx. Driver exiting \n", controller);
2423 /* Store ISA variable retrieved from command line or .conf file. */
2424 rcktpt_io_addr[0] = board1;
2425 rcktpt_io_addr[1] = board2;
2426 rcktpt_io_addr[2] = board3;
2427 rcktpt_io_addr[3] = board4;
2429 rcktpt_type[0] = modem1 ? ROCKET_TYPE_MODEM : ROCKET_TYPE_NORMAL;
2430 rcktpt_type[0] = pc104_1[0] ? ROCKET_TYPE_PC104 : rcktpt_type[0];
2431 rcktpt_type[1] = modem2 ? ROCKET_TYPE_MODEM : ROCKET_TYPE_NORMAL;
2432 rcktpt_type[1] = pc104_2[0] ? ROCKET_TYPE_PC104 : rcktpt_type[1];
2433 rcktpt_type[2] = modem3 ? ROCKET_TYPE_MODEM : ROCKET_TYPE_NORMAL;
2434 rcktpt_type[2] = pc104_3[0] ? ROCKET_TYPE_PC104 : rcktpt_type[2];
2435 rcktpt_type[3] = modem4 ? ROCKET_TYPE_MODEM : ROCKET_TYPE_NORMAL;
2436 rcktpt_type[3] = pc104_4[0] ? ROCKET_TYPE_PC104 : rcktpt_type[3];
2439 * Set up the tty driver structure and then register this
2440 * driver with the tty layer.
2443 rocket_driver->owner = THIS_MODULE;
2444 rocket_driver->flags = TTY_DRIVER_NO_DEVFS;
2445 rocket_driver->devfs_name = "tts/R";
2446 rocket_driver->name = "ttyR";
2447 rocket_driver->driver_name = "Comtrol RocketPort";
2448 rocket_driver->major = TTY_ROCKET_MAJOR;
2449 rocket_driver->minor_start = 0;
2450 rocket_driver->type = TTY_DRIVER_TYPE_SERIAL;
2451 rocket_driver->subtype = SERIAL_TYPE_NORMAL;
2452 rocket_driver->init_termios = tty_std_termios;
2453 rocket_driver->init_termios.c_cflag =
2454 B9600 | CS8 | CREAD | HUPCL | CLOCAL;
2455 #ifdef ROCKET_SOFT_FLOW
2456 rocket_driver->flags |= TTY_DRIVER_REAL_RAW | TTY_DRIVER_NO_DEVFS;
2458 tty_set_operations(rocket_driver, &rocket_ops);
2460 retval = tty_register_driver(rocket_driver);
2462 printk(KERN_INFO "Couldn't install tty RocketPort driver (error %d)\n", -retval);
2463 put_tty_driver(rocket_driver);
2467 #ifdef ROCKET_DEBUG_OPEN
2468 printk(KERN_INFO "RocketPort driver is major %d\n", rocket_driver.major);
2472 * OK, let's probe each of the controllers looking for boards. Any boards found
2473 * will be initialized here.
2475 isa_boards_found = 0;
2476 pci_boards_found = 0;
2478 for (i = 0; i < NUM_BOARDS; i++) {
2484 if (isa_boards_found < NUM_BOARDS)
2485 pci_boards_found = init_PCI(isa_boards_found);
2488 max_board = pci_boards_found + isa_boards_found;
2490 if (max_board == 0) {
2491 printk(KERN_INFO "No rocketport ports found; unloading driver.\n");
2492 del_timer_sync(&rocket_timer);
2493 tty_unregister_driver(rocket_driver);
2494 put_tty_driver(rocket_driver);
2502 static void rp_cleanup_module(void)
2507 del_timer_sync(&rocket_timer);
2509 retval = tty_unregister_driver(rocket_driver);
2511 printk(KERN_INFO "Error %d while trying to unregister "
2512 "rocketport driver\n", -retval);
2513 put_tty_driver(rocket_driver);
2515 for (i = 0; i < MAX_RP_PORTS; i++) {
2520 for (i = 0; i < NUM_BOARDS; i++) {
2521 if (rcktpt_io_addr[i] <= 0 || is_PCI[i])
2523 release_region(rcktpt_io_addr[i], 64);
2526 release_region(controller, 4);
2529 /***************************************************************************
2530 Function: sInitController
2531 Purpose: Initialization of controller global registers and controller
2533 Call: sInitController(CtlP,CtlNum,MudbacIO,AiopIOList,AiopIOListSize,
2534 IRQNum,Frequency,PeriodicOnly)
2535 CONTROLLER_T *CtlP; Ptr to controller structure
2536 int CtlNum; Controller number
2537 ByteIO_t MudbacIO; Mudbac base I/O address.
2538 ByteIO_t *AiopIOList; List of I/O addresses for each AIOP.
2539 This list must be in the order the AIOPs will be found on the
2540 controller. Once an AIOP in the list is not found, it is
2541 assumed that there are no more AIOPs on the controller.
2542 int AiopIOListSize; Number of addresses in AiopIOList
2543 int IRQNum; Interrupt Request number. Can be any of the following:
2544 0: Disable global interrupts
2553 Byte_t Frequency: A flag identifying the frequency
2554 of the periodic interrupt, can be any one of the following:
2555 FREQ_DIS - periodic interrupt disabled
2556 FREQ_137HZ - 137 Hertz
2557 FREQ_69HZ - 69 Hertz
2558 FREQ_34HZ - 34 Hertz
2559 FREQ_17HZ - 17 Hertz
2562 If IRQNum is set to 0 the Frequency parameter is
2563 overidden, it is forced to a value of FREQ_DIS.
2564 int PeriodicOnly: 1 if all interrupts except the periodic
2565 interrupt are to be blocked.
2566 0 is both the periodic interrupt and
2567 other channel interrupts are allowed.
2568 If IRQNum is set to 0 the PeriodicOnly parameter is
2569 overidden, it is forced to a value of 0.
2570 Return: int: Number of AIOPs on the controller, or CTLID_NULL if controller
2571 initialization failed.
2574 If periodic interrupts are to be disabled but AIOP interrupts
2575 are allowed, set Frequency to FREQ_DIS and PeriodicOnly to 0.
2577 If interrupts are to be completely disabled set IRQNum to 0.
2579 Setting Frequency to FREQ_DIS and PeriodicOnly to 1 is an
2580 invalid combination.
2582 This function performs initialization of global interrupt modes,
2583 but it does not actually enable global interrupts. To enable
2584 and disable global interrupts use functions sEnGlobalInt() and
2585 sDisGlobalInt(). Enabling of global interrupts is normally not
2586 done until all other initializations are complete.
2588 Even if interrupts are globally enabled, they must also be
2589 individually enabled for each channel that is to generate
2592 Warnings: No range checking on any of the parameters is done.
2594 No context switches are allowed while executing this function.
2596 After this function all AIOPs on the controller are disabled,
2597 they can be enabled with sEnAiop().
2599 static int sInitController(CONTROLLER_T * CtlP, int CtlNum, ByteIO_t MudbacIO,
2600 ByteIO_t * AiopIOList, int AiopIOListSize,
2601 int IRQNum, Byte_t Frequency, int PeriodicOnly)
2607 CtlP->AiopIntrBits = aiop_intr_bits;
2608 CtlP->AltChanRingIndicator = 0;
2609 CtlP->CtlNum = CtlNum;
2610 CtlP->CtlID = CTLID_0001; /* controller release 1 */
2611 CtlP->BusType = isISA;
2612 CtlP->MBaseIO = MudbacIO;
2613 CtlP->MReg1IO = MudbacIO + 1;
2614 CtlP->MReg2IO = MudbacIO + 2;
2615 CtlP->MReg3IO = MudbacIO + 3;
2617 CtlP->MReg2 = 0; /* interrupt disable */
2618 CtlP->MReg3 = 0; /* no periodic interrupts */
2620 if (sIRQMap[IRQNum] == 0) { /* interrupts globally disabled */
2621 CtlP->MReg2 = 0; /* interrupt disable */
2622 CtlP->MReg3 = 0; /* no periodic interrupts */
2624 CtlP->MReg2 = sIRQMap[IRQNum]; /* set IRQ number */
2625 CtlP->MReg3 = Frequency; /* set frequency */
2626 if (PeriodicOnly) { /* periodic interrupt only */
2627 CtlP->MReg3 |= PERIODIC_ONLY;
2631 sOutB(CtlP->MReg2IO, CtlP->MReg2);
2632 sOutB(CtlP->MReg3IO, CtlP->MReg3);
2633 sControllerEOI(CtlP); /* clear EOI if warm init */
2636 for (i = done = 0; i < AiopIOListSize; i++) {
2638 CtlP->AiopIO[i] = (WordIO_t) io;
2639 CtlP->AiopIntChanIO[i] = io + _INT_CHAN;
2640 sOutB(CtlP->MReg2IO, CtlP->MReg2 | (i & 0x03)); /* AIOP index */
2641 sOutB(MudbacIO, (Byte_t) (io >> 6)); /* set up AIOP I/O in MUDBAC */
2644 sEnAiop(CtlP, i); /* enable the AIOP */
2645 CtlP->AiopID[i] = sReadAiopID(io); /* read AIOP ID */
2646 if (CtlP->AiopID[i] == AIOPID_NULL) /* if AIOP does not exist */
2647 done = 1; /* done looking for AIOPs */
2649 CtlP->AiopNumChan[i] = sReadAiopNumChan((WordIO_t) io); /* num channels in AIOP */
2650 sOutW((WordIO_t) io + _INDX_ADDR, _CLK_PRE); /* clock prescaler */
2651 sOutB(io + _INDX_DATA, sClockPrescale);
2652 CtlP->NumAiop++; /* bump count of AIOPs */
2654 sDisAiop(CtlP, i); /* disable AIOP */
2657 if (CtlP->NumAiop == 0)
2660 return (CtlP->NumAiop);
2663 /***************************************************************************
2664 Function: sPCIInitController
2665 Purpose: Initialization of controller global registers and controller
2667 Call: sPCIInitController(CtlP,CtlNum,AiopIOList,AiopIOListSize,
2668 IRQNum,Frequency,PeriodicOnly)
2669 CONTROLLER_T *CtlP; Ptr to controller structure
2670 int CtlNum; Controller number
2671 ByteIO_t *AiopIOList; List of I/O addresses for each AIOP.
2672 This list must be in the order the AIOPs will be found on the
2673 controller. Once an AIOP in the list is not found, it is
2674 assumed that there are no more AIOPs on the controller.
2675 int AiopIOListSize; Number of addresses in AiopIOList
2676 int IRQNum; Interrupt Request number. Can be any of the following:
2677 0: Disable global interrupts
2686 Byte_t Frequency: A flag identifying the frequency
2687 of the periodic interrupt, can be any one of the following:
2688 FREQ_DIS - periodic interrupt disabled
2689 FREQ_137HZ - 137 Hertz
2690 FREQ_69HZ - 69 Hertz
2691 FREQ_34HZ - 34 Hertz
2692 FREQ_17HZ - 17 Hertz
2695 If IRQNum is set to 0 the Frequency parameter is
2696 overidden, it is forced to a value of FREQ_DIS.
2697 int PeriodicOnly: 1 if all interrupts except the periodic
2698 interrupt are to be blocked.
2699 0 is both the periodic interrupt and
2700 other channel interrupts are allowed.
2701 If IRQNum is set to 0 the PeriodicOnly parameter is
2702 overidden, it is forced to a value of 0.
2703 Return: int: Number of AIOPs on the controller, or CTLID_NULL if controller
2704 initialization failed.
2707 If periodic interrupts are to be disabled but AIOP interrupts
2708 are allowed, set Frequency to FREQ_DIS and PeriodicOnly to 0.
2710 If interrupts are to be completely disabled set IRQNum to 0.
2712 Setting Frequency to FREQ_DIS and PeriodicOnly to 1 is an
2713 invalid combination.
2715 This function performs initialization of global interrupt modes,
2716 but it does not actually enable global interrupts. To enable
2717 and disable global interrupts use functions sEnGlobalInt() and
2718 sDisGlobalInt(). Enabling of global interrupts is normally not
2719 done until all other initializations are complete.
2721 Even if interrupts are globally enabled, they must also be
2722 individually enabled for each channel that is to generate
2725 Warnings: No range checking on any of the parameters is done.
2727 No context switches are allowed while executing this function.
2729 After this function all AIOPs on the controller are disabled,
2730 they can be enabled with sEnAiop().
2732 static int sPCIInitController(CONTROLLER_T * CtlP, int CtlNum,
2733 ByteIO_t * AiopIOList, int AiopIOListSize,
2734 WordIO_t ConfigIO, int IRQNum, Byte_t Frequency,
2735 int PeriodicOnly, int altChanRingIndicator,
2741 CtlP->AltChanRingIndicator = altChanRingIndicator;
2742 CtlP->UPCIRingInd = UPCIRingInd;
2743 CtlP->CtlNum = CtlNum;
2744 CtlP->CtlID = CTLID_0001; /* controller release 1 */
2745 CtlP->BusType = isPCI; /* controller release 1 */
2749 CtlP->PCIIO = ConfigIO + _PCI_9030_INT_CTRL;
2750 CtlP->PCIIO2 = ConfigIO + _PCI_9030_GPIO_CTRL;
2751 CtlP->AiopIntrBits = upci_aiop_intr_bits;
2755 (WordIO_t) ((ByteIO_t) AiopIOList[0] + _PCI_INT_FUNC);
2756 CtlP->AiopIntrBits = aiop_intr_bits;
2759 sPCIControllerEOI(CtlP); /* clear EOI if warm init */
2762 for (i = 0; i < AiopIOListSize; i++) {
2764 CtlP->AiopIO[i] = (WordIO_t) io;
2765 CtlP->AiopIntChanIO[i] = io + _INT_CHAN;
2767 CtlP->AiopID[i] = sReadAiopID(io); /* read AIOP ID */
2768 if (CtlP->AiopID[i] == AIOPID_NULL) /* if AIOP does not exist */
2769 break; /* done looking for AIOPs */
2771 CtlP->AiopNumChan[i] = sReadAiopNumChan((WordIO_t) io); /* num channels in AIOP */
2772 sOutW((WordIO_t) io + _INDX_ADDR, _CLK_PRE); /* clock prescaler */
2773 sOutB(io + _INDX_DATA, sClockPrescale);
2774 CtlP->NumAiop++; /* bump count of AIOPs */
2777 if (CtlP->NumAiop == 0)
2780 return (CtlP->NumAiop);
2783 /***************************************************************************
2784 Function: sReadAiopID
2785 Purpose: Read the AIOP idenfication number directly from an AIOP.
2786 Call: sReadAiopID(io)
2787 ByteIO_t io: AIOP base I/O address
2788 Return: int: Flag AIOPID_XXXX if a valid AIOP is found, where X
2789 is replace by an identifying number.
2790 Flag AIOPID_NULL if no valid AIOP is found
2791 Warnings: No context switches are allowed while executing this function.
2794 static int sReadAiopID(ByteIO_t io)
2796 Byte_t AiopID; /* ID byte from AIOP */
2798 sOutB(io + _CMD_REG, RESET_ALL); /* reset AIOP */
2799 sOutB(io + _CMD_REG, 0x0);
2800 AiopID = sInW(io + _CHN_STAT0) & 0x07;
2803 else /* AIOP does not exist */
2807 /***************************************************************************
2808 Function: sReadAiopNumChan
2809 Purpose: Read the number of channels available in an AIOP directly from
2811 Call: sReadAiopNumChan(io)
2812 WordIO_t io: AIOP base I/O address
2813 Return: int: The number of channels available
2814 Comments: The number of channels is determined by write/reads from identical
2815 offsets within the SRAM address spaces for channels 0 and 4.
2816 If the channel 4 space is mirrored to channel 0 it is a 4 channel
2817 AIOP, otherwise it is an 8 channel.
2818 Warnings: No context switches are allowed while executing this function.
2820 static int sReadAiopNumChan(WordIO_t io)
2823 static Byte_t R[4] = { 0x00, 0x00, 0x34, 0x12 };
2825 /* write to chan 0 SRAM */
2826 sOutDW((DWordIO_t) io + _INDX_ADDR, *((DWord_t *) & R[0]));
2827 sOutW(io + _INDX_ADDR, 0); /* read from SRAM, chan 0 */
2828 x = sInW(io + _INDX_DATA);
2829 sOutW(io + _INDX_ADDR, 0x4000); /* read from SRAM, chan 4 */
2830 if (x != sInW(io + _INDX_DATA)) /* if different must be 8 chan */
2836 /***************************************************************************
2838 Purpose: Initialization of a channel and channel structure
2839 Call: sInitChan(CtlP,ChP,AiopNum,ChanNum)
2840 CONTROLLER_T *CtlP; Ptr to controller structure
2841 CHANNEL_T *ChP; Ptr to channel structure
2842 int AiopNum; AIOP number within controller
2843 int ChanNum; Channel number within AIOP
2844 Return: int: 1 if initialization succeeded, 0 if it fails because channel
2845 number exceeds number of channels available in AIOP.
2846 Comments: This function must be called before a channel can be used.
2847 Warnings: No range checking on any of the parameters is done.
2849 No context switches are allowed while executing this function.
2851 static int sInitChan(CONTROLLER_T * CtlP, CHANNEL_T * ChP, int AiopNum,
2862 if (ChanNum >= CtlP->AiopNumChan[AiopNum])
2863 return 0; /* exceeds num chans in AIOP */
2865 /* Channel, AIOP, and controller identifiers */
2867 ChP->ChanID = CtlP->AiopID[AiopNum];
2868 ChP->AiopNum = AiopNum;
2869 ChP->ChanNum = ChanNum;
2871 /* Global direct addresses */
2872 AiopIO = CtlP->AiopIO[AiopNum];
2873 ChP->Cmd = (ByteIO_t) AiopIO + _CMD_REG;
2874 ChP->IntChan = (ByteIO_t) AiopIO + _INT_CHAN;
2875 ChP->IntMask = (ByteIO_t) AiopIO + _INT_MASK;
2876 ChP->IndexAddr = (DWordIO_t) AiopIO + _INDX_ADDR;
2877 ChP->IndexData = AiopIO + _INDX_DATA;
2879 /* Channel direct addresses */
2880 ChIOOff = AiopIO + ChP->ChanNum * 2;
2881 ChP->TxRxData = ChIOOff + _TD0;
2882 ChP->ChanStat = ChIOOff + _CHN_STAT0;
2883 ChP->TxRxCount = ChIOOff + _FIFO_CNT0;
2884 ChP->IntID = (ByteIO_t) AiopIO + ChP->ChanNum + _INT_ID0;
2886 /* Initialize the channel from the RData array */
2887 for (i = 0; i < RDATASIZE; i += 4) {
2889 R[1] = RData[i + 1] + 0x10 * ChanNum;
2890 R[2] = RData[i + 2];
2891 R[3] = RData[i + 3];
2892 sOutDW(ChP->IndexAddr, *((DWord_t *) & R[0]));
2896 for (i = 0; i < RREGDATASIZE; i += 4) {
2897 ChR[i] = RRegData[i];
2898 ChR[i + 1] = RRegData[i + 1] + 0x10 * ChanNum;
2899 ChR[i + 2] = RRegData[i + 2];
2900 ChR[i + 3] = RRegData[i + 3];
2903 /* Indexed registers */
2904 ChOff = (Word_t) ChanNum *0x1000;
2906 if (sClockPrescale == 0x14)
2911 ChP->BaudDiv[0] = (Byte_t) (ChOff + _BAUD);
2912 ChP->BaudDiv[1] = (Byte_t) ((ChOff + _BAUD) >> 8);
2913 ChP->BaudDiv[2] = (Byte_t) brd9600;
2914 ChP->BaudDiv[3] = (Byte_t) (brd9600 >> 8);
2915 sOutDW(ChP->IndexAddr, *(DWord_t *) & ChP->BaudDiv[0]);
2917 ChP->TxControl[0] = (Byte_t) (ChOff + _TX_CTRL);
2918 ChP->TxControl[1] = (Byte_t) ((ChOff + _TX_CTRL) >> 8);
2919 ChP->TxControl[2] = 0;
2920 ChP->TxControl[3] = 0;
2921 sOutDW(ChP->IndexAddr, *(DWord_t *) & ChP->TxControl[0]);
2923 ChP->RxControl[0] = (Byte_t) (ChOff + _RX_CTRL);
2924 ChP->RxControl[1] = (Byte_t) ((ChOff + _RX_CTRL) >> 8);
2925 ChP->RxControl[2] = 0;
2926 ChP->RxControl[3] = 0;
2927 sOutDW(ChP->IndexAddr, *(DWord_t *) & ChP->RxControl[0]);
2929 ChP->TxEnables[0] = (Byte_t) (ChOff + _TX_ENBLS);
2930 ChP->TxEnables[1] = (Byte_t) ((ChOff + _TX_ENBLS) >> 8);
2931 ChP->TxEnables[2] = 0;
2932 ChP->TxEnables[3] = 0;
2933 sOutDW(ChP->IndexAddr, *(DWord_t *) & ChP->TxEnables[0]);
2935 ChP->TxCompare[0] = (Byte_t) (ChOff + _TXCMP1);
2936 ChP->TxCompare[1] = (Byte_t) ((ChOff + _TXCMP1) >> 8);
2937 ChP->TxCompare[2] = 0;
2938 ChP->TxCompare[3] = 0;
2939 sOutDW(ChP->IndexAddr, *(DWord_t *) & ChP->TxCompare[0]);
2941 ChP->TxReplace1[0] = (Byte_t) (ChOff + _TXREP1B1);
2942 ChP->TxReplace1[1] = (Byte_t) ((ChOff + _TXREP1B1) >> 8);
2943 ChP->TxReplace1[2] = 0;
2944 ChP->TxReplace1[3] = 0;
2945 sOutDW(ChP->IndexAddr, *(DWord_t *) & ChP->TxReplace1[0]);
2947 ChP->TxReplace2[0] = (Byte_t) (ChOff + _TXREP2);
2948 ChP->TxReplace2[1] = (Byte_t) ((ChOff + _TXREP2) >> 8);
2949 ChP->TxReplace2[2] = 0;
2950 ChP->TxReplace2[3] = 0;
2951 sOutDW(ChP->IndexAddr, *(DWord_t *) & ChP->TxReplace2[0]);
2953 ChP->TxFIFOPtrs = ChOff + _TXF_OUTP;
2954 ChP->TxFIFO = ChOff + _TX_FIFO;
2956 sOutB(ChP->Cmd, (Byte_t) ChanNum | RESTXFCNT); /* apply reset Tx FIFO count */
2957 sOutB(ChP->Cmd, (Byte_t) ChanNum); /* remove reset Tx FIFO count */
2958 sOutW((WordIO_t) ChP->IndexAddr, ChP->TxFIFOPtrs); /* clear Tx in/out ptrs */
2959 sOutW(ChP->IndexData, 0);
2960 ChP->RxFIFOPtrs = ChOff + _RXF_OUTP;
2961 ChP->RxFIFO = ChOff + _RX_FIFO;
2963 sOutB(ChP->Cmd, (Byte_t) ChanNum | RESRXFCNT); /* apply reset Rx FIFO count */
2964 sOutB(ChP->Cmd, (Byte_t) ChanNum); /* remove reset Rx FIFO count */
2965 sOutW((WordIO_t) ChP->IndexAddr, ChP->RxFIFOPtrs); /* clear Rx out ptr */
2966 sOutW(ChP->IndexData, 0);
2967 sOutW((WordIO_t) ChP->IndexAddr, ChP->RxFIFOPtrs + 2); /* clear Rx in ptr */
2968 sOutW(ChP->IndexData, 0);
2969 ChP->TxPrioCnt = ChOff + _TXP_CNT;
2970 sOutW((WordIO_t) ChP->IndexAddr, ChP->TxPrioCnt);
2971 sOutB(ChP->IndexData, 0);
2972 ChP->TxPrioPtr = ChOff + _TXP_PNTR;
2973 sOutW((WordIO_t) ChP->IndexAddr, ChP->TxPrioPtr);
2974 sOutB(ChP->IndexData, 0);
2975 ChP->TxPrioBuf = ChOff + _TXP_BUF;
2976 sEnRxProcessor(ChP); /* start the Rx processor */
2981 /***************************************************************************
2982 Function: sStopRxProcessor
2983 Purpose: Stop the receive processor from processing a channel.
2984 Call: sStopRxProcessor(ChP)
2985 CHANNEL_T *ChP; Ptr to channel structure
2987 Comments: The receive processor can be started again with sStartRxProcessor().
2988 This function causes the receive processor to skip over the
2989 stopped channel. It does not stop it from processing other channels.
2991 Warnings: No context switches are allowed while executing this function.
2993 Do not leave the receive processor stopped for more than one
2996 After calling this function a delay of 4 uS is required to ensure
2997 that the receive processor is no longer processing this channel.
2999 static void sStopRxProcessor(CHANNEL_T * ChP)
3007 sOutDW(ChP->IndexAddr, *(DWord_t *) & R[0]);
3010 /***************************************************************************
3011 Function: sFlushRxFIFO
3012 Purpose: Flush the Rx FIFO
3013 Call: sFlushRxFIFO(ChP)
3014 CHANNEL_T *ChP; Ptr to channel structure
3016 Comments: To prevent data from being enqueued or dequeued in the Tx FIFO
3017 while it is being flushed the receive processor is stopped
3018 and the transmitter is disabled. After these operations a
3019 4 uS delay is done before clearing the pointers to allow
3020 the receive processor to stop. These items are handled inside
3022 Warnings: No context switches are allowed while executing this function.
3024 static void sFlushRxFIFO(CHANNEL_T * ChP)
3027 Byte_t Ch; /* channel number within AIOP */
3028 int RxFIFOEnabled; /* 1 if Rx FIFO enabled */
3030 if (sGetRxCnt(ChP) == 0) /* Rx FIFO empty */
3031 return; /* don't need to flush */
3034 if (ChP->R[0x32] == 0x08) { /* Rx FIFO is enabled */
3036 sDisRxFIFO(ChP); /* disable it */
3037 for (i = 0; i < 2000 / 200; i++) /* delay 2 uS to allow proc to disable FIFO */
3038 sInB(ChP->IntChan); /* depends on bus i/o timing */
3040 sGetChanStatus(ChP); /* clear any pending Rx errors in chan stat */
3041 Ch = (Byte_t) sGetChanNum(ChP);
3042 sOutB(ChP->Cmd, Ch | RESRXFCNT); /* apply reset Rx FIFO count */
3043 sOutB(ChP->Cmd, Ch); /* remove reset Rx FIFO count */
3044 sOutW((WordIO_t) ChP->IndexAddr, ChP->RxFIFOPtrs); /* clear Rx out ptr */
3045 sOutW(ChP->IndexData, 0);
3046 sOutW((WordIO_t) ChP->IndexAddr, ChP->RxFIFOPtrs + 2); /* clear Rx in ptr */
3047 sOutW(ChP->IndexData, 0);
3049 sEnRxFIFO(ChP); /* enable Rx FIFO */
3052 /***************************************************************************
3053 Function: sFlushTxFIFO
3054 Purpose: Flush the Tx FIFO
3055 Call: sFlushTxFIFO(ChP)
3056 CHANNEL_T *ChP; Ptr to channel structure
3058 Comments: To prevent data from being enqueued or dequeued in the Tx FIFO
3059 while it is being flushed the receive processor is stopped
3060 and the transmitter is disabled. After these operations a
3061 4 uS delay is done before clearing the pointers to allow
3062 the receive processor to stop. These items are handled inside
3064 Warnings: No context switches are allowed while executing this function.
3066 static void sFlushTxFIFO(CHANNEL_T * ChP)
3069 Byte_t Ch; /* channel number within AIOP */
3070 int TxEnabled; /* 1 if transmitter enabled */
3072 if (sGetTxCnt(ChP) == 0) /* Tx FIFO empty */
3073 return; /* don't need to flush */
3076 if (ChP->TxControl[3] & TX_ENABLE) {
3078 sDisTransmit(ChP); /* disable transmitter */
3080 sStopRxProcessor(ChP); /* stop Rx processor */
3081 for (i = 0; i < 4000 / 200; i++) /* delay 4 uS to allow proc to stop */
3082 sInB(ChP->IntChan); /* depends on bus i/o timing */
3083 Ch = (Byte_t) sGetChanNum(ChP);
3084 sOutB(ChP->Cmd, Ch | RESTXFCNT); /* apply reset Tx FIFO count */
3085 sOutB(ChP->Cmd, Ch); /* remove reset Tx FIFO count */
3086 sOutW((WordIO_t) ChP->IndexAddr, ChP->TxFIFOPtrs); /* clear Tx in/out ptrs */
3087 sOutW(ChP->IndexData, 0);
3089 sEnTransmit(ChP); /* enable transmitter */
3090 sStartRxProcessor(ChP); /* restart Rx processor */
3093 /***************************************************************************
3094 Function: sWriteTxPrioByte
3095 Purpose: Write a byte of priority transmit data to a channel
3096 Call: sWriteTxPrioByte(ChP,Data)
3097 CHANNEL_T *ChP; Ptr to channel structure
3098 Byte_t Data; The transmit data byte
3100 Return: int: 1 if the bytes is successfully written, otherwise 0.
3102 Comments: The priority byte is transmitted before any data in the Tx FIFO.
3104 Warnings: No context switches are allowed while executing this function.
3106 static int sWriteTxPrioByte(CHANNEL_T * ChP, Byte_t Data)
3108 Byte_t DWBuf[4]; /* buffer for double word writes */
3109 Word_t *WordPtr; /* must be far because Win SS != DS */
3110 register DWordIO_t IndexAddr;
3112 if (sGetTxCnt(ChP) > 1) { /* write it to Tx priority buffer */
3113 IndexAddr = ChP->IndexAddr;
3114 sOutW((WordIO_t) IndexAddr, ChP->TxPrioCnt); /* get priority buffer status */
3115 if (sInB((ByteIO_t) ChP->IndexData) & PRI_PEND) /* priority buffer busy */
3116 return (0); /* nothing sent */
3118 WordPtr = (Word_t *) (&DWBuf[0]);
3119 *WordPtr = ChP->TxPrioBuf; /* data byte address */
3121 DWBuf[2] = Data; /* data byte value */
3122 sOutDW(IndexAddr, *((DWord_t *) (&DWBuf[0]))); /* write it out */
3124 *WordPtr = ChP->TxPrioCnt; /* Tx priority count address */
3126 DWBuf[2] = PRI_PEND + 1; /* indicate 1 byte pending */
3127 DWBuf[3] = 0; /* priority buffer pointer */
3128 sOutDW(IndexAddr, *((DWord_t *) (&DWBuf[0]))); /* write it out */
3129 } else { /* write it to Tx FIFO */
3131 sWriteTxByte(sGetTxRxDataIO(ChP), Data);
3133 return (1); /* 1 byte sent */
3136 /***************************************************************************
3137 Function: sEnInterrupts
3138 Purpose: Enable one or more interrupts for a channel
3139 Call: sEnInterrupts(ChP,Flags)
3140 CHANNEL_T *ChP; Ptr to channel structure
3141 Word_t Flags: Interrupt enable flags, can be any combination
3142 of the following flags:
3143 TXINT_EN: Interrupt on Tx FIFO empty
3144 RXINT_EN: Interrupt on Rx FIFO at trigger level (see
3146 SRCINT_EN: Interrupt on SRC (Special Rx Condition)
3147 MCINT_EN: Interrupt on modem input change
3148 CHANINT_EN: Allow channel interrupt signal to the AIOP's
3149 Interrupt Channel Register.
3151 Comments: If an interrupt enable flag is set in Flags, that interrupt will be
3152 enabled. If an interrupt enable flag is not set in Flags, that
3153 interrupt will not be changed. Interrupts can be disabled with
3154 function sDisInterrupts().
3156 This function sets the appropriate bit for the channel in the AIOP's
3157 Interrupt Mask Register if the CHANINT_EN flag is set. This allows
3158 this channel's bit to be set in the AIOP's Interrupt Channel Register.
3160 Interrupts must also be globally enabled before channel interrupts
3161 will be passed on to the host. This is done with function
3164 In some cases it may be desirable to disable interrupts globally but
3165 enable channel interrupts. This would allow the global interrupt
3166 status register to be used to determine which AIOPs need service.
3168 static void sEnInterrupts(CHANNEL_T * ChP, Word_t Flags)
3170 Byte_t Mask; /* Interrupt Mask Register */
3172 ChP->RxControl[2] |=
3173 ((Byte_t) Flags & (RXINT_EN | SRCINT_EN | MCINT_EN));
3175 sOutDW(ChP->IndexAddr, *(DWord_t *) & ChP->RxControl[0]);
3177 ChP->TxControl[2] |= ((Byte_t) Flags & TXINT_EN);
3179 sOutDW(ChP->IndexAddr, *(DWord_t *) & ChP->TxControl[0]);
3181 if (Flags & CHANINT_EN) {
3182 Mask = sInB(ChP->IntMask) | sBitMapSetTbl[ChP->ChanNum];
3183 sOutB(ChP->IntMask, Mask);
3187 /***************************************************************************
3188 Function: sDisInterrupts
3189 Purpose: Disable one or more interrupts for a channel
3190 Call: sDisInterrupts(ChP,Flags)
3191 CHANNEL_T *ChP; Ptr to channel structure
3192 Word_t Flags: Interrupt flags, can be any combination
3193 of the following flags:
3194 TXINT_EN: Interrupt on Tx FIFO empty
3195 RXINT_EN: Interrupt on Rx FIFO at trigger level (see
3197 SRCINT_EN: Interrupt on SRC (Special Rx Condition)
3198 MCINT_EN: Interrupt on modem input change
3199 CHANINT_EN: Disable channel interrupt signal to the
3200 AIOP's Interrupt Channel Register.
3202 Comments: If an interrupt flag is set in Flags, that interrupt will be
3203 disabled. If an interrupt flag is not set in Flags, that
3204 interrupt will not be changed. Interrupts can be enabled with
3205 function sEnInterrupts().
3207 This function clears the appropriate bit for the channel in the AIOP's
3208 Interrupt Mask Register if the CHANINT_EN flag is set. This blocks
3209 this channel's bit from being set in the AIOP's Interrupt Channel
3212 static void sDisInterrupts(CHANNEL_T * ChP, Word_t Flags)
3214 Byte_t Mask; /* Interrupt Mask Register */
3216 ChP->RxControl[2] &=
3217 ~((Byte_t) Flags & (RXINT_EN | SRCINT_EN | MCINT_EN));
3218 sOutDW(ChP->IndexAddr, *(DWord_t *) & ChP->RxControl[0]);
3219 ChP->TxControl[2] &= ~((Byte_t) Flags & TXINT_EN);
3220 sOutDW(ChP->IndexAddr, *(DWord_t *) & ChP->TxControl[0]);
3222 if (Flags & CHANINT_EN) {
3223 Mask = sInB(ChP->IntMask) & sBitMapClrTbl[ChP->ChanNum];
3224 sOutB(ChP->IntMask, Mask);
3228 static void sSetInterfaceMode(CHANNEL_T * ChP, Byte_t mode)
3230 sOutB(ChP->CtlP->AiopIO[2], (mode & 0x18) | ChP->ChanNum);
3234 * Not an official SSCI function, but how to reset RocketModems.
3237 static void sModemReset(CONTROLLER_T * CtlP, int chan, int on)
3242 addr = CtlP->AiopIO[0] + 0x400;
3243 val = sInB(CtlP->MReg3IO);
3244 /* if AIOP[1] is not enabled, enable it */
3245 if ((val & 2) == 0) {
3246 val = sInB(CtlP->MReg2IO);
3247 sOutB(CtlP->MReg2IO, (val & 0xfc) | (1 & 0x03));
3248 sOutB(CtlP->MBaseIO, (unsigned char) (addr >> 6));
3254 sOutB(addr + chan, 0); /* apply or remove reset */
3259 * Not an official SSCI function, but how to reset RocketModems.
3262 static void sPCIModemReset(CONTROLLER_T * CtlP, int chan, int on)
3266 addr = CtlP->AiopIO[0] + 0x40; /* 2nd AIOP */
3269 sOutB(addr + chan, 0); /* apply or remove reset */
3272 /* Resets the speaker controller on RocketModem II and III devices */
3273 static void rmSpeakerReset(CONTROLLER_T * CtlP, unsigned long model)
3277 /* RocketModem II speaker control is at the 8th port location of offset 0x40 */
3278 if ((model == MODEL_RP4M) || (model == MODEL_RP6M)) {
3279 addr = CtlP->AiopIO[0] + 0x4F;
3283 /* RocketModem III speaker control is at the 1st port location of offset 0x80 */
3284 if ((model == MODEL_UPCI_RM3_8PORT)
3285 || (model == MODEL_UPCI_RM3_4PORT)) {
3286 addr = CtlP->AiopIO[0] + 0x88;
3291 /* Returns the line number given the controller (board), aiop and channel number */
3292 static unsigned char GetLineNumber(int ctrl, int aiop, int ch)
3294 return lineNumbers[(ctrl << 5) | (aiop << 3) | ch];
3298 * Stores the line number associated with a given controller (board), aiop
3299 * and channel number.
3300 * Returns: The line number assigned
3302 static unsigned char SetLineNumber(int ctrl, int aiop, int ch)
3304 lineNumbers[(ctrl << 5) | (aiop << 3) | ch] = nextLineNumber++;
3305 return (nextLineNumber - 1);