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);
260 MODULE_AUTHOR("Theodore Ts'o");
261 MODULE_DESCRIPTION("Comtrol RocketPort driver");
262 module_param(board1, ulong, 0);
263 MODULE_PARM_DESC(board1, "I/O port for (ISA) board #1");
264 module_param(board2, ulong, 0);
265 MODULE_PARM_DESC(board2, "I/O port for (ISA) board #2");
266 module_param(board3, ulong, 0);
267 MODULE_PARM_DESC(board3, "I/O port for (ISA) board #3");
268 module_param(board4, ulong, 0);
269 MODULE_PARM_DESC(board4, "I/O port for (ISA) board #4");
270 module_param(controller, ulong, 0);
271 MODULE_PARM_DESC(controller, "I/O port for (ISA) rocketport controller");
272 module_param(support_low_speed, bool, 0);
273 MODULE_PARM_DESC(support_low_speed, "1 means support 50 baud, 0 means support 460400 baud");
274 module_param(modem1, ulong, 0);
275 MODULE_PARM_DESC(modem1, "1 means (ISA) board #1 is a RocketModem");
276 module_param(modem2, ulong, 0);
277 MODULE_PARM_DESC(modem2, "1 means (ISA) board #2 is a RocketModem");
278 module_param(modem3, ulong, 0);
279 MODULE_PARM_DESC(modem3, "1 means (ISA) board #3 is a RocketModem");
280 module_param(modem4, ulong, 0);
281 MODULE_PARM_DESC(modem4, "1 means (ISA) board #4 is a RocketModem");
282 module_param_array(pc104_1, ulong, NULL, 0);
283 MODULE_PARM_DESC(pc104_1, "set interface types for ISA(PC104) board #1 (e.g. pc104_1=232,232,485,485,...");
284 module_param_array(pc104_2, ulong, NULL, 0);
285 MODULE_PARM_DESC(pc104_2, "set interface types for ISA(PC104) board #2 (e.g. pc104_2=232,232,485,485,...");
286 module_param_array(pc104_3, ulong, NULL, 0);
287 MODULE_PARM_DESC(pc104_3, "set interface types for ISA(PC104) board #3 (e.g. pc104_3=232,232,485,485,...");
288 module_param_array(pc104_4, ulong, NULL, 0);
289 MODULE_PARM_DESC(pc104_4, "set interface types for ISA(PC104) board #4 (e.g. pc104_4=232,232,485,485,...");
292 static void rp_cleanup_module(void);
294 module_init(rp_init);
295 module_exit(rp_cleanup_module);
299 #ifdef MODULE_LICENSE
300 MODULE_LICENSE("Dual BSD/GPL");
303 /*************************************************************************/
304 /* Module code starts here */
306 static inline int rocket_paranoia_check(struct r_port *info,
309 #ifdef ROCKET_PARANOIA_CHECK
312 if (info->magic != RPORT_MAGIC) {
313 printk(KERN_INFO "Warning: bad magic number for rocketport struct in %s\n",
322 /* Serial port receive data function. Called (from timer poll) when an AIOPIC signals
323 * that receive data is present on a serial port. Pulls data from FIFO, moves it into the
326 static void rp_do_receive(struct r_port *info,
327 struct tty_struct *tty,
328 CHANNEL_t * cp, unsigned int ChanStatus)
330 unsigned int CharNStat;
331 int ToRecv, wRecv, space = 0, count;
334 struct tty_ldisc *ld;
336 ld = tty_ldisc_ref(tty);
338 ToRecv = sGetRxCnt(cp);
340 space = ld->receive_room(tty);
341 if (space > 2 * TTY_FLIPBUF_SIZE)
342 space = 2 * TTY_FLIPBUF_SIZE;
343 cbuf = tty->flip.char_buf;
344 fbuf = tty->flip.flag_buf;
346 #ifdef ROCKET_DEBUG_INTR
347 printk(KERN_INFO "rp_do_receive(%d, %d)...", ToRecv, space);
351 * determine how many we can actually read in. If we can't
352 * read any in then we have a software overrun condition.
361 * if status indicates there are errored characters in the
362 * FIFO, then enter status mode (a word in FIFO holds
363 * character and status).
365 if (ChanStatus & (RXFOVERFL | RXBREAK | RXFRAME | RXPARITY)) {
366 if (!(ChanStatus & STATMODE)) {
367 #ifdef ROCKET_DEBUG_RECEIVE
368 printk(KERN_INFO "Entering STATMODE...");
370 ChanStatus |= STATMODE;
376 * if we previously entered status mode, then read down the
377 * FIFO one word at a time, pulling apart the character and
378 * the status. Update error counters depending on status
380 if (ChanStatus & STATMODE) {
381 #ifdef ROCKET_DEBUG_RECEIVE
382 printk(KERN_INFO "Ignore %x, read %x...", info->ignore_status_mask,
383 info->read_status_mask);
386 CharNStat = sInW(sGetTxRxDataIO(cp));
387 #ifdef ROCKET_DEBUG_RECEIVE
388 printk(KERN_INFO "%x...", CharNStat);
390 if (CharNStat & STMBREAKH)
391 CharNStat &= ~(STMFRAMEH | STMPARITYH);
392 if (CharNStat & info->ignore_status_mask) {
396 CharNStat &= info->read_status_mask;
397 if (CharNStat & STMBREAKH)
399 else if (CharNStat & STMPARITYH)
400 *fbuf++ = TTY_PARITY;
401 else if (CharNStat & STMFRAMEH)
403 else if (CharNStat & STMRCVROVRH)
404 *fbuf++ = TTY_OVERRUN;
407 *cbuf++ = CharNStat & 0xff;
413 * after we've emptied the FIFO in status mode, turn
414 * status mode back off
416 if (sGetRxCnt(cp) == 0) {
417 #ifdef ROCKET_DEBUG_RECEIVE
418 printk(KERN_INFO "Status mode off.\n");
420 sDisRxStatusMode(cp);
424 * we aren't in status mode, so read down the FIFO two
425 * characters at time by doing repeated word IO
430 sInStrW(sGetTxRxDataIO(cp), (unsigned short *) cbuf, wRecv);
432 cbuf[ToRecv - 1] = sInB(sGetTxRxDataIO(cp));
433 memset(fbuf, 0, ToRecv);
438 /* Push the data up to the tty layer */
439 ld->receive_buf(tty, tty->flip.char_buf, tty->flip.flag_buf, count);
444 * Serial port transmit data function. Called from the timer polling loop as a
445 * result of a bit set in xmit_flags[], indicating data (from the tty layer) is ready
446 * to be sent out the serial port. Data is buffered in rp_table[line].xmit_buf, it is
447 * moved to the port's xmit FIFO. *info is critical data, protected by spinlocks.
449 static void rp_do_transmit(struct r_port *info)
452 CHANNEL_t *cp = &info->channel;
453 struct tty_struct *tty;
456 #ifdef ROCKET_DEBUG_INTR
457 printk(KERN_INFO "rp_do_transmit ");
462 printk(KERN_INFO "rp: WARNING rp_do_transmit called with info->tty==NULL\n");
463 clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
467 spin_lock_irqsave(&info->slock, flags);
469 info->xmit_fifo_room = TXFIFO_SIZE - sGetTxCnt(cp);
471 /* Loop sending data to FIFO until done or FIFO full */
473 if (tty->stopped || tty->hw_stopped)
475 c = min(info->xmit_fifo_room, min(info->xmit_cnt, XMIT_BUF_SIZE - info->xmit_tail));
476 if (c <= 0 || info->xmit_fifo_room <= 0)
478 sOutStrW(sGetTxRxDataIO(cp), (unsigned short *) (info->xmit_buf + info->xmit_tail), c / 2);
480 sOutB(sGetTxRxDataIO(cp), info->xmit_buf[info->xmit_tail + c - 1]);
481 info->xmit_tail += c;
482 info->xmit_tail &= XMIT_BUF_SIZE - 1;
484 info->xmit_fifo_room -= c;
485 #ifdef ROCKET_DEBUG_INTR
486 printk(KERN_INFO "tx %d chars...", c);
490 if (info->xmit_cnt == 0)
491 clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
493 if (info->xmit_cnt < WAKEUP_CHARS) {
495 wake_up_interruptible(&tty->write_wait);
496 #ifdef ROCKETPORT_HAVE_POLL_WAIT
497 wake_up_interruptible(&tty->poll_wait);
501 spin_unlock_irqrestore(&info->slock, flags);
503 #ifdef ROCKET_DEBUG_INTR
504 printk(KERN_INFO "(%d,%d,%d,%d)...", info->xmit_cnt, info->xmit_head,
505 info->xmit_tail, info->xmit_fifo_room);
510 * Called when a serial port signals it has read data in it's RX FIFO.
511 * It checks what interrupts are pending and services them, including
512 * receiving serial data.
514 static void rp_handle_port(struct r_port *info)
517 struct tty_struct *tty;
518 unsigned int IntMask, ChanStatus;
523 if ((info->flags & ROCKET_INITIALIZED) == 0) {
524 printk(KERN_INFO "rp: WARNING: rp_handle_port called with info->flags & NOT_INIT\n");
528 printk(KERN_INFO "rp: WARNING: rp_handle_port called with info->tty==NULL\n");
534 IntMask = sGetChanIntID(cp) & info->intmask;
535 #ifdef ROCKET_DEBUG_INTR
536 printk(KERN_INFO "rp_interrupt %02x...", IntMask);
538 ChanStatus = sGetChanStatus(cp);
539 if (IntMask & RXF_TRIG) { /* Rx FIFO trigger level */
540 rp_do_receive(info, tty, cp, ChanStatus);
542 if (IntMask & DELTA_CD) { /* CD change */
543 #if (defined(ROCKET_DEBUG_OPEN) || defined(ROCKET_DEBUG_INTR) || defined(ROCKET_DEBUG_HANGUP))
544 printk(KERN_INFO "ttyR%d CD now %s...", info->line,
545 (ChanStatus & CD_ACT) ? "on" : "off");
547 if (!(ChanStatus & CD_ACT) && info->cd_status) {
548 #ifdef ROCKET_DEBUG_HANGUP
549 printk(KERN_INFO "CD drop, calling hangup.\n");
553 info->cd_status = (ChanStatus & CD_ACT) ? 1 : 0;
554 wake_up_interruptible(&info->open_wait);
556 #ifdef ROCKET_DEBUG_INTR
557 if (IntMask & DELTA_CTS) { /* CTS change */
558 printk(KERN_INFO "CTS change...\n");
560 if (IntMask & DELTA_DSR) { /* DSR change */
561 printk(KERN_INFO "DSR change...\n");
567 * The top level polling routine. Repeats every 1/100 HZ (10ms).
569 static void rp_do_poll(unsigned long dummy)
572 int ctrl, aiop, ch, line, i;
573 unsigned int xmitmask;
574 unsigned int CtlMask;
575 unsigned char AiopMask;
578 /* Walk through all the boards (ctrl's) */
579 for (ctrl = 0; ctrl < max_board; ctrl++) {
580 if (rcktpt_io_addr[ctrl] <= 0)
583 /* Get a ptr to the board's control struct */
584 ctlp = sCtlNumToCtlPtr(ctrl);
586 /* Get the interupt status from the board */
588 if (ctlp->BusType == isPCI)
589 CtlMask = sPCIGetControllerIntStatus(ctlp);
592 CtlMask = sGetControllerIntStatus(ctlp);
594 /* Check if any AIOP read bits are set */
595 for (aiop = 0; CtlMask; aiop++) {
596 bit = ctlp->AiopIntrBits[aiop];
599 AiopMask = sGetAiopIntStatus(ctlp, aiop);
601 /* Check if any port read bits are set */
602 for (ch = 0; AiopMask; AiopMask >>= 1, ch++) {
605 /* Get the line number (/dev/ttyRx number). */
606 /* Read the data from the port. */
607 line = GetLineNumber(ctrl, aiop, ch);
608 rp_handle_port(rp_table[line]);
614 xmitmask = xmit_flags[ctrl];
617 * xmit_flags contains bit-significant flags, indicating there is data
618 * to xmit on the port. Bit 0 is port 0 on this board, bit 1 is port
619 * 1, ... (32 total possible). The variable i has the aiop and ch
620 * numbers encoded in it (port 0-7 are aiop0, 8-15 are aiop1, etc).
623 for (i = 0; i < rocketModel[ctrl].numPorts; i++) {
624 if (xmitmask & (1 << i)) {
625 aiop = (i & 0x18) >> 3;
627 line = GetLineNumber(ctrl, aiop, ch);
628 rp_do_transmit(rp_table[line]);
635 * Reset the timer so we get called at the next clock tick (10ms).
637 if (atomic_read(&rp_num_ports_open))
638 mod_timer(&rocket_timer, jiffies + POLL_PERIOD);
642 * Initializes the r_port structure for a port, as well as enabling the port on
644 * Inputs: board, aiop, chan numbers
646 static void init_r_port(int board, int aiop, int chan, struct pci_dev *pci_dev)
653 /* Get the next available line number */
654 line = SetLineNumber(board, aiop, chan);
656 ctlp = sCtlNumToCtlPtr(board);
658 /* Get a r_port struct for the port, fill it in and save it globally, indexed by line number */
659 info = kmalloc(sizeof (struct r_port), GFP_KERNEL);
661 printk(KERN_INFO "Couldn't allocate info struct for line #%d\n", line);
664 memset(info, 0, sizeof (struct r_port));
666 info->magic = RPORT_MAGIC;
672 info->closing_wait = 3000;
673 info->close_delay = 50;
674 init_waitqueue_head(&info->open_wait);
675 init_waitqueue_head(&info->close_wait);
676 info->flags &= ~ROCKET_MODE_MASK;
677 switch (pc104[board][line]) {
679 info->flags |= ROCKET_MODE_RS422;
682 info->flags |= ROCKET_MODE_RS485;
686 info->flags |= ROCKET_MODE_RS232;
690 info->intmask = RXF_TRIG | TXFIFO_MT | SRC_INT | DELTA_CD | DELTA_CTS | DELTA_DSR;
691 if (sInitChan(ctlp, &info->channel, aiop, chan) == 0) {
692 printk(KERN_INFO "RocketPort sInitChan(%d, %d, %d) failed!\n", board, aiop, chan);
697 rocketMode = info->flags & ROCKET_MODE_MASK;
699 if ((info->flags & ROCKET_RTS_TOGGLE) || (rocketMode == ROCKET_MODE_RS485))
700 sEnRTSToggle(&info->channel);
702 sDisRTSToggle(&info->channel);
704 if (ctlp->boardType == ROCKET_TYPE_PC104) {
705 switch (rocketMode) {
706 case ROCKET_MODE_RS485:
707 sSetInterfaceMode(&info->channel, InterfaceModeRS485);
709 case ROCKET_MODE_RS422:
710 sSetInterfaceMode(&info->channel, InterfaceModeRS422);
712 case ROCKET_MODE_RS232:
714 if (info->flags & ROCKET_RTS_TOGGLE)
715 sSetInterfaceMode(&info->channel, InterfaceModeRS232T);
717 sSetInterfaceMode(&info->channel, InterfaceModeRS232);
721 spin_lock_init(&info->slock);
722 sema_init(&info->write_sem, 1);
723 rp_table[line] = info;
725 tty_register_device(rocket_driver, line, &pci_dev->dev);
729 * Configures a rocketport port according to its termio settings. Called from
730 * user mode into the driver (exception handler). *info CD manipulation is spinlock protected.
732 static void configure_r_port(struct r_port *info,
733 struct termios *old_termios)
738 int bits, baud, divisor;
741 if (!info->tty || !info->tty->termios)
744 cflag = info->tty->termios->c_cflag;
746 /* Byte size and parity */
747 if ((cflag & CSIZE) == CS8) {
754 if (cflag & CSTOPB) {
761 if (cflag & PARENB) {
764 if (cflag & PARODD) {
774 baud = tty_get_baud_rate(info->tty);
777 divisor = ((rp_baud_base[info->board] + (baud >> 1)) / baud) - 1;
778 if ((divisor >= 8192 || divisor < 0) && old_termios) {
779 info->tty->termios->c_cflag &= ~CBAUD;
780 info->tty->termios->c_cflag |=
781 (old_termios->c_cflag & CBAUD);
782 baud = tty_get_baud_rate(info->tty);
785 divisor = (rp_baud_base[info->board] / baud) - 1;
787 if (divisor >= 8192 || divisor < 0) {
789 divisor = (rp_baud_base[info->board] / baud) - 1;
791 info->cps = baud / bits;
792 sSetBaud(cp, divisor);
794 if (cflag & CRTSCTS) {
795 info->intmask |= DELTA_CTS;
798 info->intmask &= ~DELTA_CTS;
801 if (cflag & CLOCAL) {
802 info->intmask &= ~DELTA_CD;
804 spin_lock_irqsave(&info->slock, flags);
805 if (sGetChanStatus(cp) & CD_ACT)
809 info->intmask |= DELTA_CD;
810 spin_unlock_irqrestore(&info->slock, flags);
814 * Handle software flow control in the board
816 #ifdef ROCKET_SOFT_FLOW
817 if (I_IXON(info->tty)) {
818 sEnTxSoftFlowCtl(cp);
819 if (I_IXANY(info->tty)) {
824 sSetTxXONChar(cp, START_CHAR(info->tty));
825 sSetTxXOFFChar(cp, STOP_CHAR(info->tty));
827 sDisTxSoftFlowCtl(cp);
834 * Set up ignore/read mask words
836 info->read_status_mask = STMRCVROVRH | 0xFF;
837 if (I_INPCK(info->tty))
838 info->read_status_mask |= STMFRAMEH | STMPARITYH;
839 if (I_BRKINT(info->tty) || I_PARMRK(info->tty))
840 info->read_status_mask |= STMBREAKH;
843 * Characters to ignore
845 info->ignore_status_mask = 0;
846 if (I_IGNPAR(info->tty))
847 info->ignore_status_mask |= STMFRAMEH | STMPARITYH;
848 if (I_IGNBRK(info->tty)) {
849 info->ignore_status_mask |= STMBREAKH;
851 * If we're ignoring parity and break indicators,
852 * ignore overruns too. (For real raw support).
854 if (I_IGNPAR(info->tty))
855 info->ignore_status_mask |= STMRCVROVRH;
858 rocketMode = info->flags & ROCKET_MODE_MASK;
860 if ((info->flags & ROCKET_RTS_TOGGLE)
861 || (rocketMode == ROCKET_MODE_RS485))
866 sSetRTS(&info->channel);
868 if (cp->CtlP->boardType == ROCKET_TYPE_PC104) {
869 switch (rocketMode) {
870 case ROCKET_MODE_RS485:
871 sSetInterfaceMode(cp, InterfaceModeRS485);
873 case ROCKET_MODE_RS422:
874 sSetInterfaceMode(cp, InterfaceModeRS422);
876 case ROCKET_MODE_RS232:
878 if (info->flags & ROCKET_RTS_TOGGLE)
879 sSetInterfaceMode(cp, InterfaceModeRS232T);
881 sSetInterfaceMode(cp, InterfaceModeRS232);
887 /* info->count is considered critical, protected by spinlocks. */
888 static int block_til_ready(struct tty_struct *tty, struct file *filp,
891 DECLARE_WAITQUEUE(wait, current);
893 int do_clocal = 0, extra_count = 0;
897 * If the device is in the middle of being closed, then block
898 * until it's done, and then try again.
900 if (tty_hung_up_p(filp))
901 return ((info->flags & ROCKET_HUP_NOTIFY) ? -EAGAIN : -ERESTARTSYS);
902 if (info->flags & ROCKET_CLOSING) {
903 interruptible_sleep_on(&info->close_wait);
904 return ((info->flags & ROCKET_HUP_NOTIFY) ? -EAGAIN : -ERESTARTSYS);
908 * If non-blocking mode is set, or the port is not enabled,
909 * then make the check up front and then exit.
911 if ((filp->f_flags & O_NONBLOCK) || (tty->flags & (1 << TTY_IO_ERROR))) {
912 info->flags |= ROCKET_NORMAL_ACTIVE;
915 if (tty->termios->c_cflag & CLOCAL)
919 * Block waiting for the carrier detect and the line to become free. While we are in
920 * this loop, info->count is dropped by one, so that rp_close() knows when to free things.
921 * We restore it upon exit, either normal or abnormal.
924 add_wait_queue(&info->open_wait, &wait);
925 #ifdef ROCKET_DEBUG_OPEN
926 printk(KERN_INFO "block_til_ready before block: ttyR%d, count = %d\n", info->line, info->count);
928 spin_lock_irqsave(&info->slock, flags);
930 #ifdef ROCKET_DISABLE_SIMUSAGE
931 info->flags |= ROCKET_NORMAL_ACTIVE;
933 if (!tty_hung_up_p(filp)) {
938 info->blocked_open++;
940 spin_unlock_irqrestore(&info->slock, flags);
943 if (tty->termios->c_cflag & CBAUD) {
944 sSetDTR(&info->channel);
945 sSetRTS(&info->channel);
947 set_current_state(TASK_INTERRUPTIBLE);
948 if (tty_hung_up_p(filp) || !(info->flags & ROCKET_INITIALIZED)) {
949 if (info->flags & ROCKET_HUP_NOTIFY)
952 retval = -ERESTARTSYS;
955 if (!(info->flags & ROCKET_CLOSING) && (do_clocal || (sGetChanStatusLo(&info->channel) & CD_ACT)))
957 if (signal_pending(current)) {
958 retval = -ERESTARTSYS;
961 #ifdef ROCKET_DEBUG_OPEN
962 printk(KERN_INFO "block_til_ready blocking: ttyR%d, count = %d, flags=0x%0x\n",
963 info->line, info->count, info->flags);
965 schedule(); /* Don't hold spinlock here, will hang PC */
967 current->state = TASK_RUNNING;
968 remove_wait_queue(&info->open_wait, &wait);
970 spin_lock_irqsave(&info->slock, flags);
974 info->blocked_open--;
976 spin_unlock_irqrestore(&info->slock, flags);
978 #ifdef ROCKET_DEBUG_OPEN
979 printk(KERN_INFO "block_til_ready after blocking: ttyR%d, count = %d\n",
980 info->line, info->count);
984 info->flags |= ROCKET_NORMAL_ACTIVE;
989 * Exception handler that opens a serial port. Creates xmit_buf storage, fills in
990 * port's r_port struct. Initializes the port hardware.
992 static int rp_open(struct tty_struct *tty, struct file *filp)
995 int line = 0, retval;
999 line = TTY_GET_LINE(tty);
1000 if ((line < 0) || (line >= MAX_RP_PORTS) || ((info = rp_table[line]) == NULL))
1003 page = __get_free_page(GFP_KERNEL);
1007 if (info->flags & ROCKET_CLOSING) {
1008 interruptible_sleep_on(&info->close_wait);
1010 return ((info->flags & ROCKET_HUP_NOTIFY) ? -EAGAIN : -ERESTARTSYS);
1014 * We must not sleep from here until the port is marked fully in use.
1019 info->xmit_buf = (unsigned char *) page;
1021 tty->driver_data = info;
1024 if (info->count++ == 0) {
1025 atomic_inc(&rp_num_ports_open);
1027 #ifdef ROCKET_DEBUG_OPEN
1028 printk(KERN_INFO "rocket mod++ = %d...", atomic_read(&rp_num_ports_open));
1031 #ifdef ROCKET_DEBUG_OPEN
1032 printk(KERN_INFO "rp_open ttyR%d, count=%d\n", info->line, info->count);
1036 * Info->count is now 1; so it's safe to sleep now.
1038 info->session = current->signal->session;
1039 info->pgrp = process_group(current);
1041 if ((info->flags & ROCKET_INITIALIZED) == 0) {
1042 cp = &info->channel;
1043 sSetRxTrigger(cp, TRIG_1);
1044 if (sGetChanStatus(cp) & CD_ACT)
1045 info->cd_status = 1;
1047 info->cd_status = 0;
1048 sDisRxStatusMode(cp);
1052 sEnInterrupts(cp, (TXINT_EN | MCINT_EN | RXINT_EN | SRCINT_EN | CHANINT_EN));
1053 sSetRxTrigger(cp, TRIG_1);
1056 sDisRxStatusMode(cp);
1060 sDisTxSoftFlowCtl(cp);
1065 info->flags |= ROCKET_INITIALIZED;
1068 * Set up the tty->alt_speed kludge
1070 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_HI)
1071 info->tty->alt_speed = 57600;
1072 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_VHI)
1073 info->tty->alt_speed = 115200;
1074 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_SHI)
1075 info->tty->alt_speed = 230400;
1076 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_WARP)
1077 info->tty->alt_speed = 460800;
1079 configure_r_port(info, NULL);
1080 if (tty->termios->c_cflag & CBAUD) {
1085 /* Starts (or resets) the maint polling loop */
1086 mod_timer(&rocket_timer, jiffies + POLL_PERIOD);
1088 retval = block_til_ready(tty, filp, info);
1090 #ifdef ROCKET_DEBUG_OPEN
1091 printk(KERN_INFO "rp_open returning after block_til_ready with %d\n", retval);
1099 * Exception handler that closes a serial port. info->count is considered critical.
1101 static void rp_close(struct tty_struct *tty, struct file *filp)
1103 struct r_port *info = (struct r_port *) tty->driver_data;
1104 unsigned long flags;
1108 if (rocket_paranoia_check(info, "rp_close"))
1111 #ifdef ROCKET_DEBUG_OPEN
1112 printk(KERN_INFO "rp_close ttyR%d, count = %d\n", info->line, info->count);
1115 if (tty_hung_up_p(filp))
1117 spin_lock_irqsave(&info->slock, flags);
1119 if ((tty->count == 1) && (info->count != 1)) {
1121 * Uh, oh. tty->count is 1, which means that the tty
1122 * structure will be freed. Info->count should always
1123 * be one in these conditions. If it's greater than
1124 * one, we've got real problems, since it means the
1125 * serial port won't be shutdown.
1127 printk(KERN_INFO "rp_close: bad serial port count; tty->count is 1, "
1128 "info->count is %d\n", info->count);
1131 if (--info->count < 0) {
1132 printk(KERN_INFO "rp_close: bad serial port count for ttyR%d: %d\n",
1133 info->line, info->count);
1137 spin_unlock_irqrestore(&info->slock, flags);
1140 info->flags |= ROCKET_CLOSING;
1141 spin_unlock_irqrestore(&info->slock, flags);
1143 cp = &info->channel;
1146 * Notify the line discpline to only process XON/XOFF characters
1151 * If transmission was throttled by the application request,
1152 * just flush the xmit buffer.
1154 if (tty->flow_stopped)
1155 rp_flush_buffer(tty);
1158 * Wait for the transmit buffer to clear
1160 if (info->closing_wait != ROCKET_CLOSING_WAIT_NONE)
1161 tty_wait_until_sent(tty, info->closing_wait);
1163 * Before we drop DTR, make sure the UART transmitter
1164 * has completely drained; this is especially
1165 * important if there is a transmit FIFO!
1167 timeout = (sGetTxCnt(cp) + 1) * HZ / info->cps;
1170 rp_wait_until_sent(tty, timeout);
1171 clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
1174 sDisInterrupts(cp, (TXINT_EN | MCINT_EN | RXINT_EN | SRCINT_EN | CHANINT_EN));
1176 sDisTxSoftFlowCtl(cp);
1184 if (TTY_DRIVER_FLUSH_BUFFER_EXISTS(tty))
1185 TTY_DRIVER_FLUSH_BUFFER(tty);
1187 tty_ldisc_flush(tty);
1189 clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
1191 if (info->blocked_open) {
1192 if (info->close_delay) {
1193 msleep_interruptible(jiffies_to_msecs(info->close_delay));
1195 wake_up_interruptible(&info->open_wait);
1197 if (info->xmit_buf) {
1198 free_page((unsigned long) info->xmit_buf);
1199 info->xmit_buf = NULL;
1202 info->flags &= ~(ROCKET_INITIALIZED | ROCKET_CLOSING | ROCKET_NORMAL_ACTIVE);
1204 wake_up_interruptible(&info->close_wait);
1205 atomic_dec(&rp_num_ports_open);
1207 #ifdef ROCKET_DEBUG_OPEN
1208 printk(KERN_INFO "rocket mod-- = %d...", atomic_read(&rp_num_ports_open));
1209 printk(KERN_INFO "rp_close ttyR%d complete shutdown\n", info->line);
1214 static void rp_set_termios(struct tty_struct *tty,
1215 struct termios *old_termios)
1217 struct r_port *info = (struct r_port *) tty->driver_data;
1221 if (rocket_paranoia_check(info, "rp_set_termios"))
1224 cflag = tty->termios->c_cflag;
1226 if (cflag == old_termios->c_cflag)
1230 * This driver doesn't support CS5 or CS6
1232 if (((cflag & CSIZE) == CS5) || ((cflag & CSIZE) == CS6))
1233 tty->termios->c_cflag =
1234 ((cflag & ~CSIZE) | (old_termios->c_cflag & CSIZE));
1236 configure_r_port(info, old_termios);
1238 cp = &info->channel;
1240 /* Handle transition to B0 status */
1241 if ((old_termios->c_cflag & CBAUD) && !(tty->termios->c_cflag & CBAUD)) {
1246 /* Handle transition away from B0 status */
1247 if (!(old_termios->c_cflag & CBAUD) && (tty->termios->c_cflag & CBAUD)) {
1248 if (!tty->hw_stopped || !(tty->termios->c_cflag & CRTSCTS))
1253 if ((old_termios->c_cflag & CRTSCTS) && !(tty->termios->c_cflag & CRTSCTS)) {
1254 tty->hw_stopped = 0;
1259 static void rp_break(struct tty_struct *tty, int break_state)
1261 struct r_port *info = (struct r_port *) tty->driver_data;
1262 unsigned long flags;
1264 if (rocket_paranoia_check(info, "rp_break"))
1267 spin_lock_irqsave(&info->slock, flags);
1268 if (break_state == -1)
1269 sSendBreak(&info->channel);
1271 sClrBreak(&info->channel);
1272 spin_unlock_irqrestore(&info->slock, flags);
1276 * sGetChanRI used to be a macro in rocket_int.h. When the functionality for
1277 * the UPCI boards was added, it was decided to make this a function because
1278 * the macro was getting too complicated. All cases except the first one
1279 * (UPCIRingInd) are taken directly from the original macro.
1281 static int sGetChanRI(CHANNEL_T * ChP)
1283 CONTROLLER_t *CtlP = ChP->CtlP;
1284 int ChanNum = ChP->ChanNum;
1287 if (CtlP->UPCIRingInd)
1288 RingInd = !(sInB(CtlP->UPCIRingInd) & sBitMapSetTbl[ChanNum]);
1289 else if (CtlP->AltChanRingIndicator)
1290 RingInd = sInB((ByteIO_t) (ChP->ChanStat + 8)) & DSR_ACT;
1291 else if (CtlP->boardType == ROCKET_TYPE_PC104)
1292 RingInd = !(sInB(CtlP->AiopIO[3]) & sBitMapSetTbl[ChanNum]);
1297 /********************************************************************************************/
1298 /* Here are the routines used by rp_ioctl. These are all called from exception handlers. */
1301 * Returns the state of the serial modem control lines. These next 2 functions
1302 * are the way kernel versions > 2.5 handle modem control lines rather than IOCTLs.
1304 static int rp_tiocmget(struct tty_struct *tty, struct file *file)
1306 struct r_port *info = (struct r_port *)tty->driver_data;
1307 unsigned int control, result, ChanStatus;
1309 ChanStatus = sGetChanStatusLo(&info->channel);
1310 control = info->channel.TxControl[3];
1311 result = ((control & SET_RTS) ? TIOCM_RTS : 0) |
1312 ((control & SET_DTR) ? TIOCM_DTR : 0) |
1313 ((ChanStatus & CD_ACT) ? TIOCM_CAR : 0) |
1314 (sGetChanRI(&info->channel) ? TIOCM_RNG : 0) |
1315 ((ChanStatus & DSR_ACT) ? TIOCM_DSR : 0) |
1316 ((ChanStatus & CTS_ACT) ? TIOCM_CTS : 0);
1322 * Sets the modem control lines
1324 static int rp_tiocmset(struct tty_struct *tty, struct file *file,
1325 unsigned int set, unsigned int clear)
1327 struct r_port *info = (struct r_port *)tty->driver_data;
1329 if (set & TIOCM_RTS)
1330 info->channel.TxControl[3] |= SET_RTS;
1331 if (set & TIOCM_DTR)
1332 info->channel.TxControl[3] |= SET_DTR;
1333 if (clear & TIOCM_RTS)
1334 info->channel.TxControl[3] &= ~SET_RTS;
1335 if (clear & TIOCM_DTR)
1336 info->channel.TxControl[3] &= ~SET_DTR;
1338 sOutDW(info->channel.IndexAddr, *(DWord_t *) & (info->channel.TxControl[0]));
1342 static int get_config(struct r_port *info, struct rocket_config __user *retinfo)
1344 struct rocket_config tmp;
1348 memset(&tmp, 0, sizeof (tmp));
1349 tmp.line = info->line;
1350 tmp.flags = info->flags;
1351 tmp.close_delay = info->close_delay;
1352 tmp.closing_wait = info->closing_wait;
1353 tmp.port = rcktpt_io_addr[(info->line >> 5) & 3];
1355 if (copy_to_user(retinfo, &tmp, sizeof (*retinfo)))
1360 static int set_config(struct r_port *info, struct rocket_config __user *new_info)
1362 struct rocket_config new_serial;
1364 if (copy_from_user(&new_serial, new_info, sizeof (new_serial)))
1367 if (!capable(CAP_SYS_ADMIN))
1369 if ((new_serial.flags & ~ROCKET_USR_MASK) != (info->flags & ~ROCKET_USR_MASK))
1371 info->flags = ((info->flags & ~ROCKET_USR_MASK) | (new_serial.flags & ROCKET_USR_MASK));
1372 configure_r_port(info, NULL);
1376 info->flags = ((info->flags & ~ROCKET_FLAGS) | (new_serial.flags & ROCKET_FLAGS));
1377 info->close_delay = new_serial.close_delay;
1378 info->closing_wait = new_serial.closing_wait;
1380 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_HI)
1381 info->tty->alt_speed = 57600;
1382 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_VHI)
1383 info->tty->alt_speed = 115200;
1384 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_SHI)
1385 info->tty->alt_speed = 230400;
1386 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_WARP)
1387 info->tty->alt_speed = 460800;
1389 configure_r_port(info, NULL);
1394 * This function fills in a rocket_ports struct with information
1395 * about what boards/ports are in the system. This info is passed
1396 * to user space. See setrocket.c where the info is used to create
1397 * the /dev/ttyRx ports.
1399 static int get_ports(struct r_port *info, struct rocket_ports __user *retports)
1401 struct rocket_ports tmp;
1406 memset(&tmp, 0, sizeof (tmp));
1407 tmp.tty_major = rocket_driver->major;
1409 for (board = 0; board < 4; board++) {
1410 tmp.rocketModel[board].model = rocketModel[board].model;
1411 strcpy(tmp.rocketModel[board].modelString, rocketModel[board].modelString);
1412 tmp.rocketModel[board].numPorts = rocketModel[board].numPorts;
1413 tmp.rocketModel[board].loadrm2 = rocketModel[board].loadrm2;
1414 tmp.rocketModel[board].startingPortNumber = rocketModel[board].startingPortNumber;
1416 if (copy_to_user(retports, &tmp, sizeof (*retports)))
1421 static int reset_rm2(struct r_port *info, void __user *arg)
1425 if (copy_from_user(&reset, arg, sizeof (int)))
1430 if (rcktpt_type[info->board] != ROCKET_TYPE_MODEMII &&
1431 rcktpt_type[info->board] != ROCKET_TYPE_MODEMIII)
1434 if (info->ctlp->BusType == isISA)
1435 sModemReset(info->ctlp, info->chan, reset);
1437 sPCIModemReset(info->ctlp, info->chan, reset);
1442 static int get_version(struct r_port *info, struct rocket_version __user *retvers)
1444 if (copy_to_user(retvers, &driver_version, sizeof (*retvers)))
1449 /* IOCTL call handler into the driver */
1450 static int rp_ioctl(struct tty_struct *tty, struct file *file,
1451 unsigned int cmd, unsigned long arg)
1453 struct r_port *info = (struct r_port *) tty->driver_data;
1454 void __user *argp = (void __user *)arg;
1456 if (cmd != RCKP_GET_PORTS && rocket_paranoia_check(info, "rp_ioctl"))
1460 case RCKP_GET_STRUCT:
1461 if (copy_to_user(argp, info, sizeof (struct r_port)))
1464 case RCKP_GET_CONFIG:
1465 return get_config(info, argp);
1466 case RCKP_SET_CONFIG:
1467 return set_config(info, argp);
1468 case RCKP_GET_PORTS:
1469 return get_ports(info, argp);
1470 case RCKP_RESET_RM2:
1471 return reset_rm2(info, argp);
1472 case RCKP_GET_VERSION:
1473 return get_version(info, argp);
1475 return -ENOIOCTLCMD;
1480 static void rp_send_xchar(struct tty_struct *tty, char ch)
1482 struct r_port *info = (struct r_port *) tty->driver_data;
1485 if (rocket_paranoia_check(info, "rp_send_xchar"))
1488 cp = &info->channel;
1490 sWriteTxPrioByte(cp, ch);
1492 sWriteTxByte(sGetTxRxDataIO(cp), ch);
1495 static void rp_throttle(struct tty_struct *tty)
1497 struct r_port *info = (struct r_port *) tty->driver_data;
1500 #ifdef ROCKET_DEBUG_THROTTLE
1501 printk(KERN_INFO "throttle %s: %d....\n", tty->name,
1502 tty->ldisc.chars_in_buffer(tty));
1505 if (rocket_paranoia_check(info, "rp_throttle"))
1508 cp = &info->channel;
1510 rp_send_xchar(tty, STOP_CHAR(tty));
1512 sClrRTS(&info->channel);
1515 static void rp_unthrottle(struct tty_struct *tty)
1517 struct r_port *info = (struct r_port *) tty->driver_data;
1519 #ifdef ROCKET_DEBUG_THROTTLE
1520 printk(KERN_INFO "unthrottle %s: %d....\n", tty->name,
1521 tty->ldisc.chars_in_buffer(tty));
1524 if (rocket_paranoia_check(info, "rp_throttle"))
1527 cp = &info->channel;
1529 rp_send_xchar(tty, START_CHAR(tty));
1531 sSetRTS(&info->channel);
1535 * ------------------------------------------------------------
1536 * rp_stop() and rp_start()
1538 * This routines are called before setting or resetting tty->stopped.
1539 * They enable or disable transmitter interrupts, as necessary.
1540 * ------------------------------------------------------------
1542 static void rp_stop(struct tty_struct *tty)
1544 struct r_port *info = (struct r_port *) tty->driver_data;
1546 #ifdef ROCKET_DEBUG_FLOW
1547 printk(KERN_INFO "stop %s: %d %d....\n", tty->name,
1548 info->xmit_cnt, info->xmit_fifo_room);
1551 if (rocket_paranoia_check(info, "rp_stop"))
1554 if (sGetTxCnt(&info->channel))
1555 sDisTransmit(&info->channel);
1558 static void rp_start(struct tty_struct *tty)
1560 struct r_port *info = (struct r_port *) tty->driver_data;
1562 #ifdef ROCKET_DEBUG_FLOW
1563 printk(KERN_INFO "start %s: %d %d....\n", tty->name,
1564 info->xmit_cnt, info->xmit_fifo_room);
1567 if (rocket_paranoia_check(info, "rp_stop"))
1570 sEnTransmit(&info->channel);
1571 set_bit((info->aiop * 8) + info->chan,
1572 (void *) &xmit_flags[info->board]);
1576 * rp_wait_until_sent() --- wait until the transmitter is empty
1578 static void rp_wait_until_sent(struct tty_struct *tty, int timeout)
1580 struct r_port *info = (struct r_port *) tty->driver_data;
1582 unsigned long orig_jiffies;
1583 int check_time, exit_time;
1586 if (rocket_paranoia_check(info, "rp_wait_until_sent"))
1589 cp = &info->channel;
1591 orig_jiffies = jiffies;
1592 #ifdef ROCKET_DEBUG_WAIT_UNTIL_SENT
1593 printk(KERN_INFO "In RP_wait_until_sent(%d) (jiff=%lu)...", timeout,
1595 printk(KERN_INFO "cps=%d...", info->cps);
1598 txcnt = sGetTxCnt(cp);
1600 if (sGetChanStatusLo(cp) & TXSHRMT)
1602 check_time = (HZ / info->cps) / 5;
1604 check_time = HZ * txcnt / info->cps;
1607 exit_time = orig_jiffies + timeout - jiffies;
1610 if (exit_time < check_time)
1611 check_time = exit_time;
1613 if (check_time == 0)
1615 #ifdef ROCKET_DEBUG_WAIT_UNTIL_SENT
1616 printk(KERN_INFO "txcnt = %d (jiff=%lu,check=%d)...", txcnt, jiffies, check_time);
1618 msleep_interruptible(jiffies_to_msecs(check_time));
1619 if (signal_pending(current))
1622 current->state = TASK_RUNNING;
1623 #ifdef ROCKET_DEBUG_WAIT_UNTIL_SENT
1624 printk(KERN_INFO "txcnt = %d (jiff=%lu)...done\n", txcnt, jiffies);
1629 * rp_hangup() --- called by tty_hangup() when a hangup is signaled.
1631 static void rp_hangup(struct tty_struct *tty)
1634 struct r_port *info = (struct r_port *) tty->driver_data;
1636 if (rocket_paranoia_check(info, "rp_hangup"))
1639 #if (defined(ROCKET_DEBUG_OPEN) || defined(ROCKET_DEBUG_HANGUP))
1640 printk(KERN_INFO "rp_hangup of ttyR%d...", info->line);
1642 rp_flush_buffer(tty);
1643 if (info->flags & ROCKET_CLOSING)
1646 atomic_dec(&rp_num_ports_open);
1647 clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
1650 info->flags &= ~ROCKET_NORMAL_ACTIVE;
1653 cp = &info->channel;
1656 sDisInterrupts(cp, (TXINT_EN | MCINT_EN | RXINT_EN | SRCINT_EN | CHANINT_EN));
1658 sDisTxSoftFlowCtl(cp);
1660 info->flags &= ~ROCKET_INITIALIZED;
1662 wake_up_interruptible(&info->open_wait);
1666 * Exception handler - write char routine. The RocketPort driver uses a
1667 * double-buffering strategy, with the twist that if the in-memory CPU
1668 * buffer is empty, and there's space in the transmit FIFO, the
1669 * writing routines will write directly to transmit FIFO.
1670 * Write buffer and counters protected by spinlocks
1672 static void rp_put_char(struct tty_struct *tty, unsigned char ch)
1674 struct r_port *info = (struct r_port *) tty->driver_data;
1676 unsigned long flags;
1678 if (rocket_paranoia_check(info, "rp_put_char"))
1681 /* Grab the port write semaphore, locking out other processes that try to write to this port */
1682 down(&info->write_sem);
1684 #ifdef ROCKET_DEBUG_WRITE
1685 printk(KERN_INFO "rp_put_char %c...", ch);
1688 spin_lock_irqsave(&info->slock, flags);
1689 cp = &info->channel;
1691 if (!tty->stopped && !tty->hw_stopped && info->xmit_fifo_room == 0)
1692 info->xmit_fifo_room = TXFIFO_SIZE - sGetTxCnt(cp);
1694 if (tty->stopped || tty->hw_stopped || info->xmit_fifo_room == 0 || info->xmit_cnt != 0) {
1695 info->xmit_buf[info->xmit_head++] = ch;
1696 info->xmit_head &= XMIT_BUF_SIZE - 1;
1698 set_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
1700 sOutB(sGetTxRxDataIO(cp), ch);
1701 info->xmit_fifo_room--;
1703 spin_unlock_irqrestore(&info->slock, flags);
1704 up(&info->write_sem);
1708 * Exception handler - write routine, called when user app writes to the device.
1709 * A per port write semaphore is used to protect from another process writing to
1710 * this port at the same time. This other process could be running on the other CPU
1711 * or get control of the CPU if the copy_from_user() blocks due to a page fault (swapped out).
1712 * Spinlocks protect the info xmit members.
1714 static int rp_write(struct tty_struct *tty,
1715 const unsigned char *buf, int count)
1717 struct r_port *info = (struct r_port *) tty->driver_data;
1719 const unsigned char *b;
1721 unsigned long flags;
1723 if (count <= 0 || rocket_paranoia_check(info, "rp_write"))
1726 down_interruptible(&info->write_sem);
1728 #ifdef ROCKET_DEBUG_WRITE
1729 printk(KERN_INFO "rp_write %d chars...", count);
1731 cp = &info->channel;
1733 if (!tty->stopped && !tty->hw_stopped && info->xmit_fifo_room < count)
1734 info->xmit_fifo_room = TXFIFO_SIZE - sGetTxCnt(cp);
1737 * If the write queue for the port is empty, and there is FIFO space, stuff bytes
1738 * into FIFO. Use the write queue for temp storage.
1740 if (!tty->stopped && !tty->hw_stopped && info->xmit_cnt == 0 && info->xmit_fifo_room > 0) {
1741 c = min(count, info->xmit_fifo_room);
1744 /* Push data into FIFO, 2 bytes at a time */
1745 sOutStrW(sGetTxRxDataIO(cp), (unsigned short *) b, c / 2);
1747 /* If there is a byte remaining, write it */
1749 sOutB(sGetTxRxDataIO(cp), b[c - 1]);
1755 spin_lock_irqsave(&info->slock, flags);
1756 info->xmit_fifo_room -= c;
1757 spin_unlock_irqrestore(&info->slock, flags);
1760 /* If count is zero, we wrote it all and are done */
1764 /* Write remaining data into the port's xmit_buf */
1766 if (info->tty == 0) /* Seemingly obligatory check... */
1769 c = min(count, min(XMIT_BUF_SIZE - info->xmit_cnt - 1, XMIT_BUF_SIZE - info->xmit_head));
1774 memcpy(info->xmit_buf + info->xmit_head, b, c);
1776 spin_lock_irqsave(&info->slock, flags);
1778 (info->xmit_head + c) & (XMIT_BUF_SIZE - 1);
1779 info->xmit_cnt += c;
1780 spin_unlock_irqrestore(&info->slock, flags);
1787 if ((retval > 0) && !tty->stopped && !tty->hw_stopped)
1788 set_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
1791 if (info->xmit_cnt < WAKEUP_CHARS) {
1793 wake_up_interruptible(&tty->write_wait);
1794 #ifdef ROCKETPORT_HAVE_POLL_WAIT
1795 wake_up_interruptible(&tty->poll_wait);
1798 up(&info->write_sem);
1803 * Return the number of characters that can be sent. We estimate
1804 * only using the in-memory transmit buffer only, and ignore the
1805 * potential space in the transmit FIFO.
1807 static int rp_write_room(struct tty_struct *tty)
1809 struct r_port *info = (struct r_port *) tty->driver_data;
1812 if (rocket_paranoia_check(info, "rp_write_room"))
1815 ret = XMIT_BUF_SIZE - info->xmit_cnt - 1;
1818 #ifdef ROCKET_DEBUG_WRITE
1819 printk(KERN_INFO "rp_write_room returns %d...", ret);
1825 * Return the number of characters in the buffer. Again, this only
1826 * counts those characters in the in-memory transmit buffer.
1828 static int rp_chars_in_buffer(struct tty_struct *tty)
1830 struct r_port *info = (struct r_port *) tty->driver_data;
1833 if (rocket_paranoia_check(info, "rp_chars_in_buffer"))
1836 cp = &info->channel;
1838 #ifdef ROCKET_DEBUG_WRITE
1839 printk(KERN_INFO "rp_chars_in_buffer returns %d...", info->xmit_cnt);
1841 return info->xmit_cnt;
1845 * Flushes the TX fifo for a port, deletes data in the xmit_buf stored in the
1846 * r_port struct for the port. Note that spinlock are used to protect info members,
1847 * do not call this function if the spinlock is already held.
1849 static void rp_flush_buffer(struct tty_struct *tty)
1851 struct r_port *info = (struct r_port *) tty->driver_data;
1853 unsigned long flags;
1855 if (rocket_paranoia_check(info, "rp_flush_buffer"))
1858 spin_lock_irqsave(&info->slock, flags);
1859 info->xmit_cnt = info->xmit_head = info->xmit_tail = 0;
1860 spin_unlock_irqrestore(&info->slock, flags);
1862 wake_up_interruptible(&tty->write_wait);
1863 #ifdef ROCKETPORT_HAVE_POLL_WAIT
1864 wake_up_interruptible(&tty->poll_wait);
1868 cp = &info->channel;
1875 * Called when a PCI card is found. Retrieves and stores model information,
1876 * init's aiopic and serial port hardware.
1877 * Inputs: i is the board number (0-n)
1879 static __init int register_PCI(int i, struct pci_dev *dev)
1881 int num_aiops, aiop, max_num_aiops, num_chan, chan;
1882 unsigned int aiopio[MAX_AIOPS_PER_BOARD];
1883 char *str, *board_type;
1887 int altChanRingIndicator = 0;
1888 int ports_per_aiop = 8;
1890 unsigned int class_rev;
1891 WordIO_t ConfigIO = 0;
1892 ByteIO_t UPCIRingInd = 0;
1894 if (!dev || pci_enable_device(dev))
1897 rcktpt_io_addr[i] = pci_resource_start(dev, 0);
1898 ret = pci_read_config_dword(dev, PCI_CLASS_REVISION, &class_rev);
1901 printk(KERN_INFO " Error during register_PCI(), unable to read config dword \n");
1905 rcktpt_type[i] = ROCKET_TYPE_NORMAL;
1906 rocketModel[i].loadrm2 = 0;
1907 rocketModel[i].startingPortNumber = nextLineNumber;
1909 /* Depending on the model, set up some config variables */
1910 switch (dev->device) {
1911 case PCI_DEVICE_ID_RP4QUAD:
1915 rocketModel[i].model = MODEL_RP4QUAD;
1916 strcpy(rocketModel[i].modelString, "RocketPort 4 port w/quad cable");
1917 rocketModel[i].numPorts = 4;
1919 case PCI_DEVICE_ID_RP8OCTA:
1922 rocketModel[i].model = MODEL_RP8OCTA;
1923 strcpy(rocketModel[i].modelString, "RocketPort 8 port w/octa cable");
1924 rocketModel[i].numPorts = 8;
1926 case PCI_DEVICE_ID_URP8OCTA:
1929 rocketModel[i].model = MODEL_UPCI_RP8OCTA;
1930 strcpy(rocketModel[i].modelString, "RocketPort UPCI 8 port w/octa cable");
1931 rocketModel[i].numPorts = 8;
1933 case PCI_DEVICE_ID_RP8INTF:
1936 rocketModel[i].model = MODEL_RP8INTF;
1937 strcpy(rocketModel[i].modelString, "RocketPort 8 port w/external I/F");
1938 rocketModel[i].numPorts = 8;
1940 case PCI_DEVICE_ID_URP8INTF:
1943 rocketModel[i].model = MODEL_UPCI_RP8INTF;
1944 strcpy(rocketModel[i].modelString, "RocketPort UPCI 8 port w/external I/F");
1945 rocketModel[i].numPorts = 8;
1947 case PCI_DEVICE_ID_RP8J:
1950 rocketModel[i].model = MODEL_RP8J;
1951 strcpy(rocketModel[i].modelString, "RocketPort 8 port w/RJ11 connectors");
1952 rocketModel[i].numPorts = 8;
1954 case PCI_DEVICE_ID_RP4J:
1958 rocketModel[i].model = MODEL_RP4J;
1959 strcpy(rocketModel[i].modelString, "RocketPort 4 port w/RJ45 connectors");
1960 rocketModel[i].numPorts = 4;
1962 case PCI_DEVICE_ID_RP8SNI:
1963 str = "8 (DB78 Custom)";
1965 rocketModel[i].model = MODEL_RP8SNI;
1966 strcpy(rocketModel[i].modelString, "RocketPort 8 port w/ custom DB78");
1967 rocketModel[i].numPorts = 8;
1969 case PCI_DEVICE_ID_RP16SNI:
1970 str = "16 (DB78 Custom)";
1972 rocketModel[i].model = MODEL_RP16SNI;
1973 strcpy(rocketModel[i].modelString, "RocketPort 16 port w/ custom DB78");
1974 rocketModel[i].numPorts = 16;
1976 case PCI_DEVICE_ID_RP16INTF:
1979 rocketModel[i].model = MODEL_RP16INTF;
1980 strcpy(rocketModel[i].modelString, "RocketPort 16 port w/external I/F");
1981 rocketModel[i].numPorts = 16;
1983 case PCI_DEVICE_ID_URP16INTF:
1986 rocketModel[i].model = MODEL_UPCI_RP16INTF;
1987 strcpy(rocketModel[i].modelString, "RocketPort UPCI 16 port w/external I/F");
1988 rocketModel[i].numPorts = 16;
1990 case PCI_DEVICE_ID_CRP16INTF:
1993 rocketModel[i].model = MODEL_CPCI_RP16INTF;
1994 strcpy(rocketModel[i].modelString, "RocketPort Compact PCI 16 port w/external I/F");
1995 rocketModel[i].numPorts = 16;
1997 case PCI_DEVICE_ID_RP32INTF:
2000 rocketModel[i].model = MODEL_RP32INTF;
2001 strcpy(rocketModel[i].modelString, "RocketPort 32 port w/external I/F");
2002 rocketModel[i].numPorts = 32;
2004 case PCI_DEVICE_ID_URP32INTF:
2007 rocketModel[i].model = MODEL_UPCI_RP32INTF;
2008 strcpy(rocketModel[i].modelString, "RocketPort UPCI 32 port w/external I/F");
2009 rocketModel[i].numPorts = 32;
2011 case PCI_DEVICE_ID_RPP4:
2012 str = "Plus Quadcable";
2015 altChanRingIndicator++;
2017 rocketModel[i].model = MODEL_RPP4;
2018 strcpy(rocketModel[i].modelString, "RocketPort Plus 4 port");
2019 rocketModel[i].numPorts = 4;
2021 case PCI_DEVICE_ID_RPP8:
2022 str = "Plus Octacable";
2025 altChanRingIndicator++;
2027 rocketModel[i].model = MODEL_RPP8;
2028 strcpy(rocketModel[i].modelString, "RocketPort Plus 8 port");
2029 rocketModel[i].numPorts = 8;
2031 case PCI_DEVICE_ID_RP2_232:
2032 str = "Plus 2 (RS-232)";
2035 altChanRingIndicator++;
2037 rocketModel[i].model = MODEL_RP2_232;
2038 strcpy(rocketModel[i].modelString, "RocketPort Plus 2 port RS232");
2039 rocketModel[i].numPorts = 2;
2041 case PCI_DEVICE_ID_RP2_422:
2042 str = "Plus 2 (RS-422)";
2045 altChanRingIndicator++;
2047 rocketModel[i].model = MODEL_RP2_422;
2048 strcpy(rocketModel[i].modelString, "RocketPort Plus 2 port RS422");
2049 rocketModel[i].numPorts = 2;
2051 case PCI_DEVICE_ID_RP6M:
2057 /* If class_rev is 1, the rocketmodem flash must be loaded. If it is 2 it is a "socketed" version. */
2058 if ((class_rev & 0xFF) == 1) {
2059 rcktpt_type[i] = ROCKET_TYPE_MODEMII;
2060 rocketModel[i].loadrm2 = 1;
2062 rcktpt_type[i] = ROCKET_TYPE_MODEM;
2065 rocketModel[i].model = MODEL_RP6M;
2066 strcpy(rocketModel[i].modelString, "RocketModem 6 port");
2067 rocketModel[i].numPorts = 6;
2069 case PCI_DEVICE_ID_RP4M:
2073 if ((class_rev & 0xFF) == 1) {
2074 rcktpt_type[i] = ROCKET_TYPE_MODEMII;
2075 rocketModel[i].loadrm2 = 1;
2077 rcktpt_type[i] = ROCKET_TYPE_MODEM;
2080 rocketModel[i].model = MODEL_RP4M;
2081 strcpy(rocketModel[i].modelString, "RocketModem 4 port");
2082 rocketModel[i].numPorts = 4;
2085 str = "(unknown/unsupported)";
2091 * Check for UPCI boards.
2094 switch (dev->device) {
2095 case PCI_DEVICE_ID_URP32INTF:
2096 case PCI_DEVICE_ID_URP8INTF:
2097 case PCI_DEVICE_ID_URP16INTF:
2098 case PCI_DEVICE_ID_CRP16INTF:
2099 case PCI_DEVICE_ID_URP8OCTA:
2100 rcktpt_io_addr[i] = pci_resource_start(dev, 2);
2101 ConfigIO = pci_resource_start(dev, 1);
2102 if (dev->device == PCI_DEVICE_ID_URP8OCTA) {
2103 UPCIRingInd = rcktpt_io_addr[i] + _PCI_9030_RING_IND;
2106 * Check for octa or quad cable.
2109 (sInW(ConfigIO + _PCI_9030_GPIO_CTRL) &
2110 PCI_GPIO_CTRL_8PORT)) {
2113 rocketModel[i].numPorts = 4;
2117 case PCI_DEVICE_ID_UPCI_RM3_8PORT:
2120 rocketModel[i].model = MODEL_UPCI_RM3_8PORT;
2121 strcpy(rocketModel[i].modelString, "RocketModem III 8 port");
2122 rocketModel[i].numPorts = 8;
2123 rcktpt_io_addr[i] = pci_resource_start(dev, 2);
2124 UPCIRingInd = rcktpt_io_addr[i] + _PCI_9030_RING_IND;
2125 ConfigIO = pci_resource_start(dev, 1);
2126 rcktpt_type[i] = ROCKET_TYPE_MODEMIII;
2128 case PCI_DEVICE_ID_UPCI_RM3_4PORT:
2131 rocketModel[i].model = MODEL_UPCI_RM3_4PORT;
2132 strcpy(rocketModel[i].modelString, "RocketModem III 4 port");
2133 rocketModel[i].numPorts = 4;
2134 rcktpt_io_addr[i] = pci_resource_start(dev, 2);
2135 UPCIRingInd = rcktpt_io_addr[i] + _PCI_9030_RING_IND;
2136 ConfigIO = pci_resource_start(dev, 1);
2137 rcktpt_type[i] = ROCKET_TYPE_MODEMIII;
2143 switch (rcktpt_type[i]) {
2144 case ROCKET_TYPE_MODEM:
2145 board_type = "RocketModem";
2147 case ROCKET_TYPE_MODEMII:
2148 board_type = "RocketModem II";
2150 case ROCKET_TYPE_MODEMIII:
2151 board_type = "RocketModem III";
2154 board_type = "RocketPort";
2159 sClockPrescale = 0x12; /* mod 2 (divide by 3) */
2160 rp_baud_base[i] = 921600;
2163 * If support_low_speed is set, use the slow clock
2164 * prescale, which supports 50 bps
2166 if (support_low_speed) {
2167 /* mod 9 (divide by 10) prescale */
2168 sClockPrescale = 0x19;
2169 rp_baud_base[i] = 230400;
2171 /* mod 4 (devide by 5) prescale */
2172 sClockPrescale = 0x14;
2173 rp_baud_base[i] = 460800;
2177 for (aiop = 0; aiop < max_num_aiops; aiop++)
2178 aiopio[aiop] = rcktpt_io_addr[i] + (aiop * 0x40);
2179 ctlp = sCtlNumToCtlPtr(i);
2180 num_aiops = sPCIInitController(ctlp, i, aiopio, max_num_aiops, ConfigIO, 0, FREQ_DIS, 0, altChanRingIndicator, UPCIRingInd);
2181 for (aiop = 0; aiop < max_num_aiops; aiop++)
2182 ctlp->AiopNumChan[aiop] = ports_per_aiop;
2184 printk("Comtrol PCI controller #%d ID 0x%x found in bus:slot:fn %s at address %04lx, "
2185 "%d AIOP(s) (%s)\n", i, dev->device, pci_name(dev),
2186 rcktpt_io_addr[i], num_aiops, rocketModel[i].modelString);
2187 printk(KERN_INFO "Installing %s, creating /dev/ttyR%d - %ld\n",
2188 rocketModel[i].modelString,
2189 rocketModel[i].startingPortNumber,
2190 rocketModel[i].startingPortNumber +
2191 rocketModel[i].numPorts - 1);
2193 if (num_aiops <= 0) {
2194 rcktpt_io_addr[i] = 0;
2199 /* Reset the AIOPIC, init the serial ports */
2200 for (aiop = 0; aiop < num_aiops; aiop++) {
2201 sResetAiopByNum(ctlp, aiop);
2202 num_chan = ports_per_aiop;
2203 for (chan = 0; chan < num_chan; chan++)
2204 init_r_port(i, aiop, chan, dev);
2207 /* Rocket modems must be reset */
2208 if ((rcktpt_type[i] == ROCKET_TYPE_MODEM) ||
2209 (rcktpt_type[i] == ROCKET_TYPE_MODEMII) ||
2210 (rcktpt_type[i] == ROCKET_TYPE_MODEMIII)) {
2211 num_chan = ports_per_aiop;
2212 for (chan = 0; chan < num_chan; chan++)
2213 sPCIModemReset(ctlp, chan, 1);
2215 for (chan = 0; chan < num_chan; chan++)
2216 sPCIModemReset(ctlp, chan, 0);
2218 rmSpeakerReset(ctlp, rocketModel[i].model);
2224 * Probes for PCI cards, inits them if found
2225 * Input: board_found = number of ISA boards already found, or the
2226 * starting board number
2227 * Returns: Number of PCI boards found
2229 static int __init init_PCI(int boards_found)
2231 struct pci_dev *dev = NULL;
2234 /* Work through the PCI device list, pulling out ours */
2235 while ((dev = pci_find_device(PCI_VENDOR_ID_RP, PCI_ANY_ID, dev))) {
2236 if (register_PCI(count + boards_found, dev))
2242 #endif /* CONFIG_PCI */
2245 * Probes for ISA cards
2246 * Input: i = the board number to look for
2247 * Returns: 1 if board found, 0 else
2249 static int __init init_ISA(int i)
2251 int num_aiops, num_chan = 0, total_num_chan = 0;
2253 unsigned int aiopio[MAX_AIOPS_PER_BOARD];
2257 /* If io_addr is zero, no board configured */
2258 if (rcktpt_io_addr[i] == 0)
2261 /* Reserve the IO region */
2262 if (!request_region(rcktpt_io_addr[i], 64, "Comtrol RocketPort")) {
2263 printk(KERN_INFO "Unable to reserve IO region for configured ISA RocketPort at address 0x%lx, board not installed...\n", rcktpt_io_addr[i]);
2264 rcktpt_io_addr[i] = 0;
2268 ctlp = sCtlNumToCtlPtr(i);
2270 ctlp->boardType = rcktpt_type[i];
2272 switch (rcktpt_type[i]) {
2273 case ROCKET_TYPE_PC104:
2274 type_string = "(PC104)";
2276 case ROCKET_TYPE_MODEM:
2277 type_string = "(RocketModem)";
2279 case ROCKET_TYPE_MODEMII:
2280 type_string = "(RocketModem II)";
2288 * If support_low_speed is set, use the slow clock prescale,
2289 * which supports 50 bps
2291 if (support_low_speed) {
2292 sClockPrescale = 0x19; /* mod 9 (divide by 10) prescale */
2293 rp_baud_base[i] = 230400;
2295 sClockPrescale = 0x14; /* mod 4 (devide by 5) prescale */
2296 rp_baud_base[i] = 460800;
2299 for (aiop = 0; aiop < MAX_AIOPS_PER_BOARD; aiop++)
2300 aiopio[aiop] = rcktpt_io_addr[i] + (aiop * 0x400);
2302 num_aiops = sInitController(ctlp, i, controller + (i * 0x400), aiopio, MAX_AIOPS_PER_BOARD, 0, FREQ_DIS, 0);
2304 if (ctlp->boardType == ROCKET_TYPE_PC104) {
2305 sEnAiop(ctlp, 2); /* only one AIOPIC, but these */
2306 sEnAiop(ctlp, 3); /* CSels used for other stuff */
2309 /* If something went wrong initing the AIOP's release the ISA IO memory */
2310 if (num_aiops <= 0) {
2311 release_region(rcktpt_io_addr[i], 64);
2312 rcktpt_io_addr[i] = 0;
2316 rocketModel[i].startingPortNumber = nextLineNumber;
2318 for (aiop = 0; aiop < num_aiops; aiop++) {
2319 sResetAiopByNum(ctlp, aiop);
2320 sEnAiop(ctlp, aiop);
2321 num_chan = sGetAiopNumChan(ctlp, aiop);
2322 total_num_chan += num_chan;
2323 for (chan = 0; chan < num_chan; chan++)
2324 init_r_port(i, aiop, chan, NULL);
2327 if ((rcktpt_type[i] == ROCKET_TYPE_MODEM) || (rcktpt_type[i] == ROCKET_TYPE_MODEMII)) {
2328 num_chan = sGetAiopNumChan(ctlp, 0);
2329 total_num_chan = num_chan;
2330 for (chan = 0; chan < num_chan; chan++)
2331 sModemReset(ctlp, chan, 1);
2333 for (chan = 0; chan < num_chan; chan++)
2334 sModemReset(ctlp, chan, 0);
2336 strcpy(rocketModel[i].modelString, "RocketModem ISA");
2338 strcpy(rocketModel[i].modelString, "RocketPort ISA");
2340 rocketModel[i].numPorts = total_num_chan;
2341 rocketModel[i].model = MODEL_ISA;
2343 printk(KERN_INFO "RocketPort ISA card #%d found at 0x%lx - %d AIOPs %s\n",
2344 i, rcktpt_io_addr[i], num_aiops, type_string);
2346 printk(KERN_INFO "Installing %s, creating /dev/ttyR%d - %ld\n",
2347 rocketModel[i].modelString,
2348 rocketModel[i].startingPortNumber,
2349 rocketModel[i].startingPortNumber +
2350 rocketModel[i].numPorts - 1);
2355 static struct tty_operations rocket_ops = {
2359 .put_char = rp_put_char,
2360 .write_room = rp_write_room,
2361 .chars_in_buffer = rp_chars_in_buffer,
2362 .flush_buffer = rp_flush_buffer,
2364 .throttle = rp_throttle,
2365 .unthrottle = rp_unthrottle,
2366 .set_termios = rp_set_termios,
2369 .hangup = rp_hangup,
2370 .break_ctl = rp_break,
2371 .send_xchar = rp_send_xchar,
2372 .wait_until_sent = rp_wait_until_sent,
2373 .tiocmget = rp_tiocmget,
2374 .tiocmset = rp_tiocmset,
2378 * The module "startup" routine; it's run when the module is loaded.
2380 int __init rp_init(void)
2382 int retval, pci_boards_found, isa_boards_found, i;
2384 printk(KERN_INFO "RocketPort device driver module, version %s, %s\n",
2385 ROCKET_VERSION, ROCKET_DATE);
2387 rocket_driver = alloc_tty_driver(MAX_RP_PORTS);
2392 * Set up the timer channel.
2394 init_timer(&rocket_timer);
2395 rocket_timer.function = rp_do_poll;
2398 * Initialize the array of pointers to our own internal state
2401 memset(rp_table, 0, sizeof (rp_table));
2402 memset(xmit_flags, 0, sizeof (xmit_flags));
2404 for (i = 0; i < MAX_RP_PORTS; i++)
2407 memset(rocketModel, 0, sizeof (rocketModel));
2410 * If board 1 is non-zero, there is at least one ISA configured. If controller is
2411 * zero, use the default controller IO address of board1 + 0x40.
2414 if (controller == 0)
2415 controller = board1 + 0x40;
2417 controller = 0; /* Used as a flag, meaning no ISA boards */
2420 /* If an ISA card is configured, reserve the 4 byte IO space for the Mudbac controller */
2421 if (controller && (!request_region(controller, 4, "Comtrol RocketPort"))) {
2422 printk(KERN_INFO "Unable to reserve IO region for first configured ISA RocketPort controller 0x%lx. Driver exiting \n", controller);
2426 /* Store ISA variable retrieved from command line or .conf file. */
2427 rcktpt_io_addr[0] = board1;
2428 rcktpt_io_addr[1] = board2;
2429 rcktpt_io_addr[2] = board3;
2430 rcktpt_io_addr[3] = board4;
2432 rcktpt_type[0] = modem1 ? ROCKET_TYPE_MODEM : ROCKET_TYPE_NORMAL;
2433 rcktpt_type[0] = pc104_1[0] ? ROCKET_TYPE_PC104 : rcktpt_type[0];
2434 rcktpt_type[1] = modem2 ? ROCKET_TYPE_MODEM : ROCKET_TYPE_NORMAL;
2435 rcktpt_type[1] = pc104_2[0] ? ROCKET_TYPE_PC104 : rcktpt_type[1];
2436 rcktpt_type[2] = modem3 ? ROCKET_TYPE_MODEM : ROCKET_TYPE_NORMAL;
2437 rcktpt_type[2] = pc104_3[0] ? ROCKET_TYPE_PC104 : rcktpt_type[2];
2438 rcktpt_type[3] = modem4 ? ROCKET_TYPE_MODEM : ROCKET_TYPE_NORMAL;
2439 rcktpt_type[3] = pc104_4[0] ? ROCKET_TYPE_PC104 : rcktpt_type[3];
2442 * Set up the tty driver structure and then register this
2443 * driver with the tty layer.
2446 rocket_driver->owner = THIS_MODULE;
2447 rocket_driver->flags = TTY_DRIVER_NO_DEVFS;
2448 rocket_driver->devfs_name = "tts/R";
2449 rocket_driver->name = "ttyR";
2450 rocket_driver->driver_name = "Comtrol RocketPort";
2451 rocket_driver->major = TTY_ROCKET_MAJOR;
2452 rocket_driver->minor_start = 0;
2453 rocket_driver->type = TTY_DRIVER_TYPE_SERIAL;
2454 rocket_driver->subtype = SERIAL_TYPE_NORMAL;
2455 rocket_driver->init_termios = tty_std_termios;
2456 rocket_driver->init_termios.c_cflag =
2457 B9600 | CS8 | CREAD | HUPCL | CLOCAL;
2458 #ifdef ROCKET_SOFT_FLOW
2459 rocket_driver->flags |= TTY_DRIVER_REAL_RAW | TTY_DRIVER_NO_DEVFS;
2461 tty_set_operations(rocket_driver, &rocket_ops);
2463 retval = tty_register_driver(rocket_driver);
2465 printk(KERN_INFO "Couldn't install tty RocketPort driver (error %d)\n", -retval);
2466 put_tty_driver(rocket_driver);
2470 #ifdef ROCKET_DEBUG_OPEN
2471 printk(KERN_INFO "RocketPort driver is major %d\n", rocket_driver.major);
2475 * OK, let's probe each of the controllers looking for boards. Any boards found
2476 * will be initialized here.
2478 isa_boards_found = 0;
2479 pci_boards_found = 0;
2481 for (i = 0; i < NUM_BOARDS; i++) {
2487 if (isa_boards_found < NUM_BOARDS)
2488 pci_boards_found = init_PCI(isa_boards_found);
2491 max_board = pci_boards_found + isa_boards_found;
2493 if (max_board == 0) {
2494 printk(KERN_INFO "No rocketport ports found; unloading driver.\n");
2495 del_timer_sync(&rocket_timer);
2496 tty_unregister_driver(rocket_driver);
2497 put_tty_driver(rocket_driver);
2506 static void rp_cleanup_module(void)
2511 del_timer_sync(&rocket_timer);
2513 retval = tty_unregister_driver(rocket_driver);
2515 printk(KERN_INFO "Error %d while trying to unregister "
2516 "rocketport driver\n", -retval);
2517 put_tty_driver(rocket_driver);
2519 for (i = 0; i < MAX_RP_PORTS; i++) {
2524 for (i = 0; i < NUM_BOARDS; i++) {
2525 if (rcktpt_io_addr[i] <= 0 || is_PCI[i])
2527 release_region(rcktpt_io_addr[i], 64);
2530 release_region(controller, 4);
2534 /***************************************************************************
2535 Function: sInitController
2536 Purpose: Initialization of controller global registers and controller
2538 Call: sInitController(CtlP,CtlNum,MudbacIO,AiopIOList,AiopIOListSize,
2539 IRQNum,Frequency,PeriodicOnly)
2540 CONTROLLER_T *CtlP; Ptr to controller structure
2541 int CtlNum; Controller number
2542 ByteIO_t MudbacIO; Mudbac base I/O address.
2543 ByteIO_t *AiopIOList; List of I/O addresses for each AIOP.
2544 This list must be in the order the AIOPs will be found on the
2545 controller. Once an AIOP in the list is not found, it is
2546 assumed that there are no more AIOPs on the controller.
2547 int AiopIOListSize; Number of addresses in AiopIOList
2548 int IRQNum; Interrupt Request number. Can be any of the following:
2549 0: Disable global interrupts
2558 Byte_t Frequency: A flag identifying the frequency
2559 of the periodic interrupt, can be any one of the following:
2560 FREQ_DIS - periodic interrupt disabled
2561 FREQ_137HZ - 137 Hertz
2562 FREQ_69HZ - 69 Hertz
2563 FREQ_34HZ - 34 Hertz
2564 FREQ_17HZ - 17 Hertz
2567 If IRQNum is set to 0 the Frequency parameter is
2568 overidden, it is forced to a value of FREQ_DIS.
2569 int PeriodicOnly: 1 if all interrupts except the periodic
2570 interrupt are to be blocked.
2571 0 is both the periodic interrupt and
2572 other channel interrupts are allowed.
2573 If IRQNum is set to 0 the PeriodicOnly parameter is
2574 overidden, it is forced to a value of 0.
2575 Return: int: Number of AIOPs on the controller, or CTLID_NULL if controller
2576 initialization failed.
2579 If periodic interrupts are to be disabled but AIOP interrupts
2580 are allowed, set Frequency to FREQ_DIS and PeriodicOnly to 0.
2582 If interrupts are to be completely disabled set IRQNum to 0.
2584 Setting Frequency to FREQ_DIS and PeriodicOnly to 1 is an
2585 invalid combination.
2587 This function performs initialization of global interrupt modes,
2588 but it does not actually enable global interrupts. To enable
2589 and disable global interrupts use functions sEnGlobalInt() and
2590 sDisGlobalInt(). Enabling of global interrupts is normally not
2591 done until all other initializations are complete.
2593 Even if interrupts are globally enabled, they must also be
2594 individually enabled for each channel that is to generate
2597 Warnings: No range checking on any of the parameters is done.
2599 No context switches are allowed while executing this function.
2601 After this function all AIOPs on the controller are disabled,
2602 they can be enabled with sEnAiop().
2604 static int sInitController(CONTROLLER_T * CtlP, int CtlNum, ByteIO_t MudbacIO,
2605 ByteIO_t * AiopIOList, int AiopIOListSize,
2606 int IRQNum, Byte_t Frequency, int PeriodicOnly)
2612 CtlP->AiopIntrBits = aiop_intr_bits;
2613 CtlP->AltChanRingIndicator = 0;
2614 CtlP->CtlNum = CtlNum;
2615 CtlP->CtlID = CTLID_0001; /* controller release 1 */
2616 CtlP->BusType = isISA;
2617 CtlP->MBaseIO = MudbacIO;
2618 CtlP->MReg1IO = MudbacIO + 1;
2619 CtlP->MReg2IO = MudbacIO + 2;
2620 CtlP->MReg3IO = MudbacIO + 3;
2622 CtlP->MReg2 = 0; /* interrupt disable */
2623 CtlP->MReg3 = 0; /* no periodic interrupts */
2625 if (sIRQMap[IRQNum] == 0) { /* interrupts globally disabled */
2626 CtlP->MReg2 = 0; /* interrupt disable */
2627 CtlP->MReg3 = 0; /* no periodic interrupts */
2629 CtlP->MReg2 = sIRQMap[IRQNum]; /* set IRQ number */
2630 CtlP->MReg3 = Frequency; /* set frequency */
2631 if (PeriodicOnly) { /* periodic interrupt only */
2632 CtlP->MReg3 |= PERIODIC_ONLY;
2636 sOutB(CtlP->MReg2IO, CtlP->MReg2);
2637 sOutB(CtlP->MReg3IO, CtlP->MReg3);
2638 sControllerEOI(CtlP); /* clear EOI if warm init */
2641 for (i = done = 0; i < AiopIOListSize; i++) {
2643 CtlP->AiopIO[i] = (WordIO_t) io;
2644 CtlP->AiopIntChanIO[i] = io + _INT_CHAN;
2645 sOutB(CtlP->MReg2IO, CtlP->MReg2 | (i & 0x03)); /* AIOP index */
2646 sOutB(MudbacIO, (Byte_t) (io >> 6)); /* set up AIOP I/O in MUDBAC */
2649 sEnAiop(CtlP, i); /* enable the AIOP */
2650 CtlP->AiopID[i] = sReadAiopID(io); /* read AIOP ID */
2651 if (CtlP->AiopID[i] == AIOPID_NULL) /* if AIOP does not exist */
2652 done = 1; /* done looking for AIOPs */
2654 CtlP->AiopNumChan[i] = sReadAiopNumChan((WordIO_t) io); /* num channels in AIOP */
2655 sOutW((WordIO_t) io + _INDX_ADDR, _CLK_PRE); /* clock prescaler */
2656 sOutB(io + _INDX_DATA, sClockPrescale);
2657 CtlP->NumAiop++; /* bump count of AIOPs */
2659 sDisAiop(CtlP, i); /* disable AIOP */
2662 if (CtlP->NumAiop == 0)
2665 return (CtlP->NumAiop);
2668 /***************************************************************************
2669 Function: sPCIInitController
2670 Purpose: Initialization of controller global registers and controller
2672 Call: sPCIInitController(CtlP,CtlNum,AiopIOList,AiopIOListSize,
2673 IRQNum,Frequency,PeriodicOnly)
2674 CONTROLLER_T *CtlP; Ptr to controller structure
2675 int CtlNum; Controller number
2676 ByteIO_t *AiopIOList; List of I/O addresses for each AIOP.
2677 This list must be in the order the AIOPs will be found on the
2678 controller. Once an AIOP in the list is not found, it is
2679 assumed that there are no more AIOPs on the controller.
2680 int AiopIOListSize; Number of addresses in AiopIOList
2681 int IRQNum; Interrupt Request number. Can be any of the following:
2682 0: Disable global interrupts
2691 Byte_t Frequency: A flag identifying the frequency
2692 of the periodic interrupt, can be any one of the following:
2693 FREQ_DIS - periodic interrupt disabled
2694 FREQ_137HZ - 137 Hertz
2695 FREQ_69HZ - 69 Hertz
2696 FREQ_34HZ - 34 Hertz
2697 FREQ_17HZ - 17 Hertz
2700 If IRQNum is set to 0 the Frequency parameter is
2701 overidden, it is forced to a value of FREQ_DIS.
2702 int PeriodicOnly: 1 if all interrupts except the periodic
2703 interrupt are to be blocked.
2704 0 is both the periodic interrupt and
2705 other channel interrupts are allowed.
2706 If IRQNum is set to 0 the PeriodicOnly parameter is
2707 overidden, it is forced to a value of 0.
2708 Return: int: Number of AIOPs on the controller, or CTLID_NULL if controller
2709 initialization failed.
2712 If periodic interrupts are to be disabled but AIOP interrupts
2713 are allowed, set Frequency to FREQ_DIS and PeriodicOnly to 0.
2715 If interrupts are to be completely disabled set IRQNum to 0.
2717 Setting Frequency to FREQ_DIS and PeriodicOnly to 1 is an
2718 invalid combination.
2720 This function performs initialization of global interrupt modes,
2721 but it does not actually enable global interrupts. To enable
2722 and disable global interrupts use functions sEnGlobalInt() and
2723 sDisGlobalInt(). Enabling of global interrupts is normally not
2724 done until all other initializations are complete.
2726 Even if interrupts are globally enabled, they must also be
2727 individually enabled for each channel that is to generate
2730 Warnings: No range checking on any of the parameters is done.
2732 No context switches are allowed while executing this function.
2734 After this function all AIOPs on the controller are disabled,
2735 they can be enabled with sEnAiop().
2737 static int sPCIInitController(CONTROLLER_T * CtlP, int CtlNum,
2738 ByteIO_t * AiopIOList, int AiopIOListSize,
2739 WordIO_t ConfigIO, int IRQNum, Byte_t Frequency,
2740 int PeriodicOnly, int altChanRingIndicator,
2746 CtlP->AltChanRingIndicator = altChanRingIndicator;
2747 CtlP->UPCIRingInd = UPCIRingInd;
2748 CtlP->CtlNum = CtlNum;
2749 CtlP->CtlID = CTLID_0001; /* controller release 1 */
2750 CtlP->BusType = isPCI; /* controller release 1 */
2754 CtlP->PCIIO = ConfigIO + _PCI_9030_INT_CTRL;
2755 CtlP->PCIIO2 = ConfigIO + _PCI_9030_GPIO_CTRL;
2756 CtlP->AiopIntrBits = upci_aiop_intr_bits;
2760 (WordIO_t) ((ByteIO_t) AiopIOList[0] + _PCI_INT_FUNC);
2761 CtlP->AiopIntrBits = aiop_intr_bits;
2764 sPCIControllerEOI(CtlP); /* clear EOI if warm init */
2767 for (i = 0; i < AiopIOListSize; i++) {
2769 CtlP->AiopIO[i] = (WordIO_t) io;
2770 CtlP->AiopIntChanIO[i] = io + _INT_CHAN;
2772 CtlP->AiopID[i] = sReadAiopID(io); /* read AIOP ID */
2773 if (CtlP->AiopID[i] == AIOPID_NULL) /* if AIOP does not exist */
2774 break; /* done looking for AIOPs */
2776 CtlP->AiopNumChan[i] = sReadAiopNumChan((WordIO_t) io); /* num channels in AIOP */
2777 sOutW((WordIO_t) io + _INDX_ADDR, _CLK_PRE); /* clock prescaler */
2778 sOutB(io + _INDX_DATA, sClockPrescale);
2779 CtlP->NumAiop++; /* bump count of AIOPs */
2782 if (CtlP->NumAiop == 0)
2785 return (CtlP->NumAiop);
2788 /***************************************************************************
2789 Function: sReadAiopID
2790 Purpose: Read the AIOP idenfication number directly from an AIOP.
2791 Call: sReadAiopID(io)
2792 ByteIO_t io: AIOP base I/O address
2793 Return: int: Flag AIOPID_XXXX if a valid AIOP is found, where X
2794 is replace by an identifying number.
2795 Flag AIOPID_NULL if no valid AIOP is found
2796 Warnings: No context switches are allowed while executing this function.
2799 static int sReadAiopID(ByteIO_t io)
2801 Byte_t AiopID; /* ID byte from AIOP */
2803 sOutB(io + _CMD_REG, RESET_ALL); /* reset AIOP */
2804 sOutB(io + _CMD_REG, 0x0);
2805 AiopID = sInW(io + _CHN_STAT0) & 0x07;
2808 else /* AIOP does not exist */
2812 /***************************************************************************
2813 Function: sReadAiopNumChan
2814 Purpose: Read the number of channels available in an AIOP directly from
2816 Call: sReadAiopNumChan(io)
2817 WordIO_t io: AIOP base I/O address
2818 Return: int: The number of channels available
2819 Comments: The number of channels is determined by write/reads from identical
2820 offsets within the SRAM address spaces for channels 0 and 4.
2821 If the channel 4 space is mirrored to channel 0 it is a 4 channel
2822 AIOP, otherwise it is an 8 channel.
2823 Warnings: No context switches are allowed while executing this function.
2825 static int sReadAiopNumChan(WordIO_t io)
2828 static Byte_t R[4] = { 0x00, 0x00, 0x34, 0x12 };
2830 /* write to chan 0 SRAM */
2831 sOutDW((DWordIO_t) io + _INDX_ADDR, *((DWord_t *) & R[0]));
2832 sOutW(io + _INDX_ADDR, 0); /* read from SRAM, chan 0 */
2833 x = sInW(io + _INDX_DATA);
2834 sOutW(io + _INDX_ADDR, 0x4000); /* read from SRAM, chan 4 */
2835 if (x != sInW(io + _INDX_DATA)) /* if different must be 8 chan */
2841 /***************************************************************************
2843 Purpose: Initialization of a channel and channel structure
2844 Call: sInitChan(CtlP,ChP,AiopNum,ChanNum)
2845 CONTROLLER_T *CtlP; Ptr to controller structure
2846 CHANNEL_T *ChP; Ptr to channel structure
2847 int AiopNum; AIOP number within controller
2848 int ChanNum; Channel number within AIOP
2849 Return: int: 1 if initialization succeeded, 0 if it fails because channel
2850 number exceeds number of channels available in AIOP.
2851 Comments: This function must be called before a channel can be used.
2852 Warnings: No range checking on any of the parameters is done.
2854 No context switches are allowed while executing this function.
2856 static int sInitChan(CONTROLLER_T * CtlP, CHANNEL_T * ChP, int AiopNum,
2867 if (ChanNum >= CtlP->AiopNumChan[AiopNum])
2868 return 0; /* exceeds num chans in AIOP */
2870 /* Channel, AIOP, and controller identifiers */
2872 ChP->ChanID = CtlP->AiopID[AiopNum];
2873 ChP->AiopNum = AiopNum;
2874 ChP->ChanNum = ChanNum;
2876 /* Global direct addresses */
2877 AiopIO = CtlP->AiopIO[AiopNum];
2878 ChP->Cmd = (ByteIO_t) AiopIO + _CMD_REG;
2879 ChP->IntChan = (ByteIO_t) AiopIO + _INT_CHAN;
2880 ChP->IntMask = (ByteIO_t) AiopIO + _INT_MASK;
2881 ChP->IndexAddr = (DWordIO_t) AiopIO + _INDX_ADDR;
2882 ChP->IndexData = AiopIO + _INDX_DATA;
2884 /* Channel direct addresses */
2885 ChIOOff = AiopIO + ChP->ChanNum * 2;
2886 ChP->TxRxData = ChIOOff + _TD0;
2887 ChP->ChanStat = ChIOOff + _CHN_STAT0;
2888 ChP->TxRxCount = ChIOOff + _FIFO_CNT0;
2889 ChP->IntID = (ByteIO_t) AiopIO + ChP->ChanNum + _INT_ID0;
2891 /* Initialize the channel from the RData array */
2892 for (i = 0; i < RDATASIZE; i += 4) {
2894 R[1] = RData[i + 1] + 0x10 * ChanNum;
2895 R[2] = RData[i + 2];
2896 R[3] = RData[i + 3];
2897 sOutDW(ChP->IndexAddr, *((DWord_t *) & R[0]));
2901 for (i = 0; i < RREGDATASIZE; i += 4) {
2902 ChR[i] = RRegData[i];
2903 ChR[i + 1] = RRegData[i + 1] + 0x10 * ChanNum;
2904 ChR[i + 2] = RRegData[i + 2];
2905 ChR[i + 3] = RRegData[i + 3];
2908 /* Indexed registers */
2909 ChOff = (Word_t) ChanNum *0x1000;
2911 if (sClockPrescale == 0x14)
2916 ChP->BaudDiv[0] = (Byte_t) (ChOff + _BAUD);
2917 ChP->BaudDiv[1] = (Byte_t) ((ChOff + _BAUD) >> 8);
2918 ChP->BaudDiv[2] = (Byte_t) brd9600;
2919 ChP->BaudDiv[3] = (Byte_t) (brd9600 >> 8);
2920 sOutDW(ChP->IndexAddr, *(DWord_t *) & ChP->BaudDiv[0]);
2922 ChP->TxControl[0] = (Byte_t) (ChOff + _TX_CTRL);
2923 ChP->TxControl[1] = (Byte_t) ((ChOff + _TX_CTRL) >> 8);
2924 ChP->TxControl[2] = 0;
2925 ChP->TxControl[3] = 0;
2926 sOutDW(ChP->IndexAddr, *(DWord_t *) & ChP->TxControl[0]);
2928 ChP->RxControl[0] = (Byte_t) (ChOff + _RX_CTRL);
2929 ChP->RxControl[1] = (Byte_t) ((ChOff + _RX_CTRL) >> 8);
2930 ChP->RxControl[2] = 0;
2931 ChP->RxControl[3] = 0;
2932 sOutDW(ChP->IndexAddr, *(DWord_t *) & ChP->RxControl[0]);
2934 ChP->TxEnables[0] = (Byte_t) (ChOff + _TX_ENBLS);
2935 ChP->TxEnables[1] = (Byte_t) ((ChOff + _TX_ENBLS) >> 8);
2936 ChP->TxEnables[2] = 0;
2937 ChP->TxEnables[3] = 0;
2938 sOutDW(ChP->IndexAddr, *(DWord_t *) & ChP->TxEnables[0]);
2940 ChP->TxCompare[0] = (Byte_t) (ChOff + _TXCMP1);
2941 ChP->TxCompare[1] = (Byte_t) ((ChOff + _TXCMP1) >> 8);
2942 ChP->TxCompare[2] = 0;
2943 ChP->TxCompare[3] = 0;
2944 sOutDW(ChP->IndexAddr, *(DWord_t *) & ChP->TxCompare[0]);
2946 ChP->TxReplace1[0] = (Byte_t) (ChOff + _TXREP1B1);
2947 ChP->TxReplace1[1] = (Byte_t) ((ChOff + _TXREP1B1) >> 8);
2948 ChP->TxReplace1[2] = 0;
2949 ChP->TxReplace1[3] = 0;
2950 sOutDW(ChP->IndexAddr, *(DWord_t *) & ChP->TxReplace1[0]);
2952 ChP->TxReplace2[0] = (Byte_t) (ChOff + _TXREP2);
2953 ChP->TxReplace2[1] = (Byte_t) ((ChOff + _TXREP2) >> 8);
2954 ChP->TxReplace2[2] = 0;
2955 ChP->TxReplace2[3] = 0;
2956 sOutDW(ChP->IndexAddr, *(DWord_t *) & ChP->TxReplace2[0]);
2958 ChP->TxFIFOPtrs = ChOff + _TXF_OUTP;
2959 ChP->TxFIFO = ChOff + _TX_FIFO;
2961 sOutB(ChP->Cmd, (Byte_t) ChanNum | RESTXFCNT); /* apply reset Tx FIFO count */
2962 sOutB(ChP->Cmd, (Byte_t) ChanNum); /* remove reset Tx FIFO count */
2963 sOutW((WordIO_t) ChP->IndexAddr, ChP->TxFIFOPtrs); /* clear Tx in/out ptrs */
2964 sOutW(ChP->IndexData, 0);
2965 ChP->RxFIFOPtrs = ChOff + _RXF_OUTP;
2966 ChP->RxFIFO = ChOff + _RX_FIFO;
2968 sOutB(ChP->Cmd, (Byte_t) ChanNum | RESRXFCNT); /* apply reset Rx FIFO count */
2969 sOutB(ChP->Cmd, (Byte_t) ChanNum); /* remove reset Rx FIFO count */
2970 sOutW((WordIO_t) ChP->IndexAddr, ChP->RxFIFOPtrs); /* clear Rx out ptr */
2971 sOutW(ChP->IndexData, 0);
2972 sOutW((WordIO_t) ChP->IndexAddr, ChP->RxFIFOPtrs + 2); /* clear Rx in ptr */
2973 sOutW(ChP->IndexData, 0);
2974 ChP->TxPrioCnt = ChOff + _TXP_CNT;
2975 sOutW((WordIO_t) ChP->IndexAddr, ChP->TxPrioCnt);
2976 sOutB(ChP->IndexData, 0);
2977 ChP->TxPrioPtr = ChOff + _TXP_PNTR;
2978 sOutW((WordIO_t) ChP->IndexAddr, ChP->TxPrioPtr);
2979 sOutB(ChP->IndexData, 0);
2980 ChP->TxPrioBuf = ChOff + _TXP_BUF;
2981 sEnRxProcessor(ChP); /* start the Rx processor */
2986 /***************************************************************************
2987 Function: sStopRxProcessor
2988 Purpose: Stop the receive processor from processing a channel.
2989 Call: sStopRxProcessor(ChP)
2990 CHANNEL_T *ChP; Ptr to channel structure
2992 Comments: The receive processor can be started again with sStartRxProcessor().
2993 This function causes the receive processor to skip over the
2994 stopped channel. It does not stop it from processing other channels.
2996 Warnings: No context switches are allowed while executing this function.
2998 Do not leave the receive processor stopped for more than one
3001 After calling this function a delay of 4 uS is required to ensure
3002 that the receive processor is no longer processing this channel.
3004 static void sStopRxProcessor(CHANNEL_T * ChP)
3012 sOutDW(ChP->IndexAddr, *(DWord_t *) & R[0]);
3015 /***************************************************************************
3016 Function: sFlushRxFIFO
3017 Purpose: Flush the Rx FIFO
3018 Call: sFlushRxFIFO(ChP)
3019 CHANNEL_T *ChP; Ptr to channel structure
3021 Comments: To prevent data from being enqueued or dequeued in the Tx FIFO
3022 while it is being flushed the receive processor is stopped
3023 and the transmitter is disabled. After these operations a
3024 4 uS delay is done before clearing the pointers to allow
3025 the receive processor to stop. These items are handled inside
3027 Warnings: No context switches are allowed while executing this function.
3029 static void sFlushRxFIFO(CHANNEL_T * ChP)
3032 Byte_t Ch; /* channel number within AIOP */
3033 int RxFIFOEnabled; /* 1 if Rx FIFO enabled */
3035 if (sGetRxCnt(ChP) == 0) /* Rx FIFO empty */
3036 return; /* don't need to flush */
3039 if (ChP->R[0x32] == 0x08) { /* Rx FIFO is enabled */
3041 sDisRxFIFO(ChP); /* disable it */
3042 for (i = 0; i < 2000 / 200; i++) /* delay 2 uS to allow proc to disable FIFO */
3043 sInB(ChP->IntChan); /* depends on bus i/o timing */
3045 sGetChanStatus(ChP); /* clear any pending Rx errors in chan stat */
3046 Ch = (Byte_t) sGetChanNum(ChP);
3047 sOutB(ChP->Cmd, Ch | RESRXFCNT); /* apply reset Rx FIFO count */
3048 sOutB(ChP->Cmd, Ch); /* remove reset Rx FIFO count */
3049 sOutW((WordIO_t) ChP->IndexAddr, ChP->RxFIFOPtrs); /* clear Rx out ptr */
3050 sOutW(ChP->IndexData, 0);
3051 sOutW((WordIO_t) ChP->IndexAddr, ChP->RxFIFOPtrs + 2); /* clear Rx in ptr */
3052 sOutW(ChP->IndexData, 0);
3054 sEnRxFIFO(ChP); /* enable Rx FIFO */
3057 /***************************************************************************
3058 Function: sFlushTxFIFO
3059 Purpose: Flush the Tx FIFO
3060 Call: sFlushTxFIFO(ChP)
3061 CHANNEL_T *ChP; Ptr to channel structure
3063 Comments: To prevent data from being enqueued or dequeued in the Tx FIFO
3064 while it is being flushed the receive processor is stopped
3065 and the transmitter is disabled. After these operations a
3066 4 uS delay is done before clearing the pointers to allow
3067 the receive processor to stop. These items are handled inside
3069 Warnings: No context switches are allowed while executing this function.
3071 static void sFlushTxFIFO(CHANNEL_T * ChP)
3074 Byte_t Ch; /* channel number within AIOP */
3075 int TxEnabled; /* 1 if transmitter enabled */
3077 if (sGetTxCnt(ChP) == 0) /* Tx FIFO empty */
3078 return; /* don't need to flush */
3081 if (ChP->TxControl[3] & TX_ENABLE) {
3083 sDisTransmit(ChP); /* disable transmitter */
3085 sStopRxProcessor(ChP); /* stop Rx processor */
3086 for (i = 0; i < 4000 / 200; i++) /* delay 4 uS to allow proc to stop */
3087 sInB(ChP->IntChan); /* depends on bus i/o timing */
3088 Ch = (Byte_t) sGetChanNum(ChP);
3089 sOutB(ChP->Cmd, Ch | RESTXFCNT); /* apply reset Tx FIFO count */
3090 sOutB(ChP->Cmd, Ch); /* remove reset Tx FIFO count */
3091 sOutW((WordIO_t) ChP->IndexAddr, ChP->TxFIFOPtrs); /* clear Tx in/out ptrs */
3092 sOutW(ChP->IndexData, 0);
3094 sEnTransmit(ChP); /* enable transmitter */
3095 sStartRxProcessor(ChP); /* restart Rx processor */
3098 /***************************************************************************
3099 Function: sWriteTxPrioByte
3100 Purpose: Write a byte of priority transmit data to a channel
3101 Call: sWriteTxPrioByte(ChP,Data)
3102 CHANNEL_T *ChP; Ptr to channel structure
3103 Byte_t Data; The transmit data byte
3105 Return: int: 1 if the bytes is successfully written, otherwise 0.
3107 Comments: The priority byte is transmitted before any data in the Tx FIFO.
3109 Warnings: No context switches are allowed while executing this function.
3111 static int sWriteTxPrioByte(CHANNEL_T * ChP, Byte_t Data)
3113 Byte_t DWBuf[4]; /* buffer for double word writes */
3114 Word_t *WordPtr; /* must be far because Win SS != DS */
3115 register DWordIO_t IndexAddr;
3117 if (sGetTxCnt(ChP) > 1) { /* write it to Tx priority buffer */
3118 IndexAddr = ChP->IndexAddr;
3119 sOutW((WordIO_t) IndexAddr, ChP->TxPrioCnt); /* get priority buffer status */
3120 if (sInB((ByteIO_t) ChP->IndexData) & PRI_PEND) /* priority buffer busy */
3121 return (0); /* nothing sent */
3123 WordPtr = (Word_t *) (&DWBuf[0]);
3124 *WordPtr = ChP->TxPrioBuf; /* data byte address */
3126 DWBuf[2] = Data; /* data byte value */
3127 sOutDW(IndexAddr, *((DWord_t *) (&DWBuf[0]))); /* write it out */
3129 *WordPtr = ChP->TxPrioCnt; /* Tx priority count address */
3131 DWBuf[2] = PRI_PEND + 1; /* indicate 1 byte pending */
3132 DWBuf[3] = 0; /* priority buffer pointer */
3133 sOutDW(IndexAddr, *((DWord_t *) (&DWBuf[0]))); /* write it out */
3134 } else { /* write it to Tx FIFO */
3136 sWriteTxByte(sGetTxRxDataIO(ChP), Data);
3138 return (1); /* 1 byte sent */
3141 /***************************************************************************
3142 Function: sEnInterrupts
3143 Purpose: Enable one or more interrupts for a channel
3144 Call: sEnInterrupts(ChP,Flags)
3145 CHANNEL_T *ChP; Ptr to channel structure
3146 Word_t Flags: Interrupt enable flags, can be any combination
3147 of the following flags:
3148 TXINT_EN: Interrupt on Tx FIFO empty
3149 RXINT_EN: Interrupt on Rx FIFO at trigger level (see
3151 SRCINT_EN: Interrupt on SRC (Special Rx Condition)
3152 MCINT_EN: Interrupt on modem input change
3153 CHANINT_EN: Allow channel interrupt signal to the AIOP's
3154 Interrupt Channel Register.
3156 Comments: If an interrupt enable flag is set in Flags, that interrupt will be
3157 enabled. If an interrupt enable flag is not set in Flags, that
3158 interrupt will not be changed. Interrupts can be disabled with
3159 function sDisInterrupts().
3161 This function sets the appropriate bit for the channel in the AIOP's
3162 Interrupt Mask Register if the CHANINT_EN flag is set. This allows
3163 this channel's bit to be set in the AIOP's Interrupt Channel Register.
3165 Interrupts must also be globally enabled before channel interrupts
3166 will be passed on to the host. This is done with function
3169 In some cases it may be desirable to disable interrupts globally but
3170 enable channel interrupts. This would allow the global interrupt
3171 status register to be used to determine which AIOPs need service.
3173 static void sEnInterrupts(CHANNEL_T * ChP, Word_t Flags)
3175 Byte_t Mask; /* Interrupt Mask Register */
3177 ChP->RxControl[2] |=
3178 ((Byte_t) Flags & (RXINT_EN | SRCINT_EN | MCINT_EN));
3180 sOutDW(ChP->IndexAddr, *(DWord_t *) & ChP->RxControl[0]);
3182 ChP->TxControl[2] |= ((Byte_t) Flags & TXINT_EN);
3184 sOutDW(ChP->IndexAddr, *(DWord_t *) & ChP->TxControl[0]);
3186 if (Flags & CHANINT_EN) {
3187 Mask = sInB(ChP->IntMask) | sBitMapSetTbl[ChP->ChanNum];
3188 sOutB(ChP->IntMask, Mask);
3192 /***************************************************************************
3193 Function: sDisInterrupts
3194 Purpose: Disable one or more interrupts for a channel
3195 Call: sDisInterrupts(ChP,Flags)
3196 CHANNEL_T *ChP; Ptr to channel structure
3197 Word_t Flags: Interrupt flags, can be any combination
3198 of the following flags:
3199 TXINT_EN: Interrupt on Tx FIFO empty
3200 RXINT_EN: Interrupt on Rx FIFO at trigger level (see
3202 SRCINT_EN: Interrupt on SRC (Special Rx Condition)
3203 MCINT_EN: Interrupt on modem input change
3204 CHANINT_EN: Disable channel interrupt signal to the
3205 AIOP's Interrupt Channel Register.
3207 Comments: If an interrupt flag is set in Flags, that interrupt will be
3208 disabled. If an interrupt flag is not set in Flags, that
3209 interrupt will not be changed. Interrupts can be enabled with
3210 function sEnInterrupts().
3212 This function clears the appropriate bit for the channel in the AIOP's
3213 Interrupt Mask Register if the CHANINT_EN flag is set. This blocks
3214 this channel's bit from being set in the AIOP's Interrupt Channel
3217 static void sDisInterrupts(CHANNEL_T * ChP, Word_t Flags)
3219 Byte_t Mask; /* Interrupt Mask Register */
3221 ChP->RxControl[2] &=
3222 ~((Byte_t) Flags & (RXINT_EN | SRCINT_EN | MCINT_EN));
3223 sOutDW(ChP->IndexAddr, *(DWord_t *) & ChP->RxControl[0]);
3224 ChP->TxControl[2] &= ~((Byte_t) Flags & TXINT_EN);
3225 sOutDW(ChP->IndexAddr, *(DWord_t *) & ChP->TxControl[0]);
3227 if (Flags & CHANINT_EN) {
3228 Mask = sInB(ChP->IntMask) & sBitMapClrTbl[ChP->ChanNum];
3229 sOutB(ChP->IntMask, Mask);
3233 static void sSetInterfaceMode(CHANNEL_T * ChP, Byte_t mode)
3235 sOutB(ChP->CtlP->AiopIO[2], (mode & 0x18) | ChP->ChanNum);
3239 * Not an official SSCI function, but how to reset RocketModems.
3242 static void sModemReset(CONTROLLER_T * CtlP, int chan, int on)
3247 addr = CtlP->AiopIO[0] + 0x400;
3248 val = sInB(CtlP->MReg3IO);
3249 /* if AIOP[1] is not enabled, enable it */
3250 if ((val & 2) == 0) {
3251 val = sInB(CtlP->MReg2IO);
3252 sOutB(CtlP->MReg2IO, (val & 0xfc) | (1 & 0x03));
3253 sOutB(CtlP->MBaseIO, (unsigned char) (addr >> 6));
3259 sOutB(addr + chan, 0); /* apply or remove reset */
3264 * Not an official SSCI function, but how to reset RocketModems.
3267 static void sPCIModemReset(CONTROLLER_T * CtlP, int chan, int on)
3271 addr = CtlP->AiopIO[0] + 0x40; /* 2nd AIOP */
3274 sOutB(addr + chan, 0); /* apply or remove reset */
3277 /* Resets the speaker controller on RocketModem II and III devices */
3278 static void rmSpeakerReset(CONTROLLER_T * CtlP, unsigned long model)
3282 /* RocketModem II speaker control is at the 8th port location of offset 0x40 */
3283 if ((model == MODEL_RP4M) || (model == MODEL_RP6M)) {
3284 addr = CtlP->AiopIO[0] + 0x4F;
3288 /* RocketModem III speaker control is at the 1st port location of offset 0x80 */
3289 if ((model == MODEL_UPCI_RM3_8PORT)
3290 || (model == MODEL_UPCI_RM3_4PORT)) {
3291 addr = CtlP->AiopIO[0] + 0x88;
3296 /* Returns the line number given the controller (board), aiop and channel number */
3297 static unsigned char GetLineNumber(int ctrl, int aiop, int ch)
3299 return lineNumbers[(ctrl << 5) | (aiop << 3) | ch];
3303 * Stores the line number associated with a given controller (board), aiop
3304 * and channel number.
3305 * Returns: The line number assigned
3307 static unsigned char SetLineNumber(int ctrl, int aiop, int ch)
3309 lineNumbers[(ctrl << 5) | (aiop << 3) | ch] = nextLineNumber++;
3310 return (nextLineNumber - 1);