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 ******/
68 #include <linux/module.h>
69 #include <linux/errno.h>
70 #include <linux/major.h>
71 #include <linux/kernel.h>
72 #include <linux/signal.h>
73 #include <linux/slab.h>
75 #include <linux/sched.h>
76 #include <linux/timer.h>
77 #include <linux/interrupt.h>
78 #include <linux/tty.h>
79 #include <linux/tty_driver.h>
80 #include <linux/tty_flip.h>
81 #include <linux/string.h>
82 #include <linux/fcntl.h>
83 #include <linux/ptrace.h>
84 #include <linux/mutex.h>
85 #include <linux/ioport.h>
86 #include <linux/delay.h>
87 #include <linux/wait.h>
88 #include <linux/pci.h>
89 #include <asm/uaccess.h>
90 #include <asm/atomic.h>
91 #include <linux/bitops.h>
92 #include <linux/spinlock.h>
93 #include <linux/init.h>
95 /****** RocketPort includes ******/
97 #include "rocket_int.h"
100 #define ROCKET_VERSION "2.09"
101 #define ROCKET_DATE "12-June-2003"
103 /****** RocketPort Local Variables ******/
105 static void rp_do_poll(unsigned long dummy);
107 static struct tty_driver *rocket_driver;
109 static struct rocket_version driver_version = {
110 ROCKET_VERSION, ROCKET_DATE
113 static struct r_port *rp_table[MAX_RP_PORTS]; /* The main repository of serial port state information. */
114 static unsigned int xmit_flags[NUM_BOARDS]; /* Bit significant, indicates port had data to transmit. */
115 /* eg. Bit 0 indicates port 0 has xmit data, ... */
116 static atomic_t rp_num_ports_open; /* Number of serial ports open */
117 static DEFINE_TIMER(rocket_timer, rp_do_poll, 0, 0);
119 static unsigned long board1; /* ISA addresses, retrieved from rocketport.conf */
120 static unsigned long board2;
121 static unsigned long board3;
122 static unsigned long board4;
123 static unsigned long controller;
124 static int support_low_speed;
125 static unsigned long modem1;
126 static unsigned long modem2;
127 static unsigned long modem3;
128 static unsigned long modem4;
129 static unsigned long pc104_1[8];
130 static unsigned long pc104_2[8];
131 static unsigned long pc104_3[8];
132 static unsigned long pc104_4[8];
133 static unsigned long *pc104[4] = { pc104_1, pc104_2, pc104_3, pc104_4 };
135 static int rp_baud_base[NUM_BOARDS]; /* Board config info (Someday make a per-board structure) */
136 static unsigned long rcktpt_io_addr[NUM_BOARDS];
137 static int rcktpt_type[NUM_BOARDS];
138 static int is_PCI[NUM_BOARDS];
139 static rocketModel_t rocketModel[NUM_BOARDS];
140 static int max_board;
143 * The following arrays define the interrupt bits corresponding to each AIOP.
144 * These bits are different between the ISA and regular PCI boards and the
145 * Universal PCI boards.
148 static Word_t aiop_intr_bits[AIOP_CTL_SIZE] = {
155 static Word_t upci_aiop_intr_bits[AIOP_CTL_SIZE] = {
156 UPCI_AIOP_INTR_BIT_0,
157 UPCI_AIOP_INTR_BIT_1,
158 UPCI_AIOP_INTR_BIT_2,
162 static Byte_t RData[RDATASIZE] = {
163 0x00, 0x09, 0xf6, 0x82,
164 0x02, 0x09, 0x86, 0xfb,
165 0x04, 0x09, 0x00, 0x0a,
166 0x06, 0x09, 0x01, 0x0a,
167 0x08, 0x09, 0x8a, 0x13,
168 0x0a, 0x09, 0xc5, 0x11,
169 0x0c, 0x09, 0x86, 0x85,
170 0x0e, 0x09, 0x20, 0x0a,
171 0x10, 0x09, 0x21, 0x0a,
172 0x12, 0x09, 0x41, 0xff,
173 0x14, 0x09, 0x82, 0x00,
174 0x16, 0x09, 0x82, 0x7b,
175 0x18, 0x09, 0x8a, 0x7d,
176 0x1a, 0x09, 0x88, 0x81,
177 0x1c, 0x09, 0x86, 0x7a,
178 0x1e, 0x09, 0x84, 0x81,
179 0x20, 0x09, 0x82, 0x7c,
180 0x22, 0x09, 0x0a, 0x0a
183 static Byte_t RRegData[RREGDATASIZE] = {
184 0x00, 0x09, 0xf6, 0x82, /* 00: Stop Rx processor */
185 0x08, 0x09, 0x8a, 0x13, /* 04: Tx software flow control */
186 0x0a, 0x09, 0xc5, 0x11, /* 08: XON char */
187 0x0c, 0x09, 0x86, 0x85, /* 0c: XANY */
188 0x12, 0x09, 0x41, 0xff, /* 10: Rx mask char */
189 0x14, 0x09, 0x82, 0x00, /* 14: Compare/Ignore #0 */
190 0x16, 0x09, 0x82, 0x7b, /* 18: Compare #1 */
191 0x18, 0x09, 0x8a, 0x7d, /* 1c: Compare #2 */
192 0x1a, 0x09, 0x88, 0x81, /* 20: Interrupt #1 */
193 0x1c, 0x09, 0x86, 0x7a, /* 24: Ignore/Replace #1 */
194 0x1e, 0x09, 0x84, 0x81, /* 28: Interrupt #2 */
195 0x20, 0x09, 0x82, 0x7c, /* 2c: Ignore/Replace #2 */
196 0x22, 0x09, 0x0a, 0x0a /* 30: Rx FIFO Enable */
199 static CONTROLLER_T sController[CTL_SIZE] = {
200 {-1, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, {0, 0, 0, 0},
201 {0, 0, 0, 0}, {-1, -1, -1, -1}, {0, 0, 0, 0}},
202 {-1, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, {0, 0, 0, 0},
203 {0, 0, 0, 0}, {-1, -1, -1, -1}, {0, 0, 0, 0}},
204 {-1, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, {0, 0, 0, 0},
205 {0, 0, 0, 0}, {-1, -1, -1, -1}, {0, 0, 0, 0}},
206 {-1, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, {0, 0, 0, 0},
207 {0, 0, 0, 0}, {-1, -1, -1, -1}, {0, 0, 0, 0}}
210 static Byte_t sBitMapClrTbl[8] = {
211 0xfe, 0xfd, 0xfb, 0xf7, 0xef, 0xdf, 0xbf, 0x7f
214 static Byte_t sBitMapSetTbl[8] = {
215 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80
218 static int sClockPrescale = 0x14;
221 * Line number is the ttySIx number (x), the Minor number. We
222 * assign them sequentially, starting at zero. The following
223 * array keeps track of the line number assigned to a given board/aiop/channel.
225 static unsigned char lineNumbers[MAX_RP_PORTS];
226 static unsigned long nextLineNumber;
228 /***** RocketPort Static Prototypes *********/
229 static int __init init_ISA(int i);
230 static void rp_wait_until_sent(struct tty_struct *tty, int timeout);
231 static void rp_flush_buffer(struct tty_struct *tty);
232 static void rmSpeakerReset(CONTROLLER_T * CtlP, unsigned long model);
233 static unsigned char GetLineNumber(int ctrl, int aiop, int ch);
234 static unsigned char SetLineNumber(int ctrl, int aiop, int ch);
235 static void rp_start(struct tty_struct *tty);
236 static int sInitChan(CONTROLLER_T * CtlP, CHANNEL_T * ChP, int AiopNum,
238 static void sSetInterfaceMode(CHANNEL_T * ChP, Byte_t mode);
239 static void sFlushRxFIFO(CHANNEL_T * ChP);
240 static void sFlushTxFIFO(CHANNEL_T * ChP);
241 static void sEnInterrupts(CHANNEL_T * ChP, Word_t Flags);
242 static void sDisInterrupts(CHANNEL_T * ChP, Word_t Flags);
243 static void sModemReset(CONTROLLER_T * CtlP, int chan, int on);
244 static void sPCIModemReset(CONTROLLER_T * CtlP, int chan, int on);
245 static int sWriteTxPrioByte(CHANNEL_T * ChP, Byte_t Data);
246 static int sPCIInitController(CONTROLLER_T * CtlP, int CtlNum,
247 ByteIO_t * AiopIOList, int AiopIOListSize,
248 WordIO_t ConfigIO, int IRQNum, Byte_t Frequency,
249 int PeriodicOnly, int altChanRingIndicator,
251 static int sInitController(CONTROLLER_T * CtlP, int CtlNum, ByteIO_t MudbacIO,
252 ByteIO_t * AiopIOList, int AiopIOListSize,
253 int IRQNum, Byte_t Frequency, int PeriodicOnly);
254 static int sReadAiopID(ByteIO_t io);
255 static int sReadAiopNumChan(WordIO_t io);
257 MODULE_AUTHOR("Theodore Ts'o");
258 MODULE_DESCRIPTION("Comtrol RocketPort driver");
259 module_param(board1, ulong, 0);
260 MODULE_PARM_DESC(board1, "I/O port for (ISA) board #1");
261 module_param(board2, ulong, 0);
262 MODULE_PARM_DESC(board2, "I/O port for (ISA) board #2");
263 module_param(board3, ulong, 0);
264 MODULE_PARM_DESC(board3, "I/O port for (ISA) board #3");
265 module_param(board4, ulong, 0);
266 MODULE_PARM_DESC(board4, "I/O port for (ISA) board #4");
267 module_param(controller, ulong, 0);
268 MODULE_PARM_DESC(controller, "I/O port for (ISA) rocketport controller");
269 module_param(support_low_speed, bool, 0);
270 MODULE_PARM_DESC(support_low_speed, "1 means support 50 baud, 0 means support 460400 baud");
271 module_param(modem1, ulong, 0);
272 MODULE_PARM_DESC(modem1, "1 means (ISA) board #1 is a RocketModem");
273 module_param(modem2, ulong, 0);
274 MODULE_PARM_DESC(modem2, "1 means (ISA) board #2 is a RocketModem");
275 module_param(modem3, ulong, 0);
276 MODULE_PARM_DESC(modem3, "1 means (ISA) board #3 is a RocketModem");
277 module_param(modem4, ulong, 0);
278 MODULE_PARM_DESC(modem4, "1 means (ISA) board #4 is a RocketModem");
279 module_param_array(pc104_1, ulong, NULL, 0);
280 MODULE_PARM_DESC(pc104_1, "set interface types for ISA(PC104) board #1 (e.g. pc104_1=232,232,485,485,...");
281 module_param_array(pc104_2, ulong, NULL, 0);
282 MODULE_PARM_DESC(pc104_2, "set interface types for ISA(PC104) board #2 (e.g. pc104_2=232,232,485,485,...");
283 module_param_array(pc104_3, ulong, NULL, 0);
284 MODULE_PARM_DESC(pc104_3, "set interface types for ISA(PC104) board #3 (e.g. pc104_3=232,232,485,485,...");
285 module_param_array(pc104_4, ulong, NULL, 0);
286 MODULE_PARM_DESC(pc104_4, "set interface types for ISA(PC104) board #4 (e.g. pc104_4=232,232,485,485,...");
288 static int rp_init(void);
289 static void rp_cleanup_module(void);
291 module_init(rp_init);
292 module_exit(rp_cleanup_module);
295 MODULE_LICENSE("Dual BSD/GPL");
297 /*************************************************************************/
298 /* Module code starts here */
300 static inline int rocket_paranoia_check(struct r_port *info,
303 #ifdef ROCKET_PARANOIA_CHECK
306 if (info->magic != RPORT_MAGIC) {
307 printk(KERN_INFO "Warning: bad magic number for rocketport struct in %s\n",
316 /* Serial port receive data function. Called (from timer poll) when an AIOPIC signals
317 * that receive data is present on a serial port. Pulls data from FIFO, moves it into the
320 static void rp_do_receive(struct r_port *info,
321 struct tty_struct *tty,
322 CHANNEL_t * cp, unsigned int ChanStatus)
324 unsigned int CharNStat;
325 int ToRecv, wRecv, space;
328 ToRecv = sGetRxCnt(cp);
329 #ifdef ROCKET_DEBUG_INTR
330 printk(KERN_INFO "rp_do_receive(%d)...", ToRecv);
336 * if status indicates there are errored characters in the
337 * FIFO, then enter status mode (a word in FIFO holds
338 * character and status).
340 if (ChanStatus & (RXFOVERFL | RXBREAK | RXFRAME | RXPARITY)) {
341 if (!(ChanStatus & STATMODE)) {
342 #ifdef ROCKET_DEBUG_RECEIVE
343 printk(KERN_INFO "Entering STATMODE...");
345 ChanStatus |= STATMODE;
351 * if we previously entered status mode, then read down the
352 * FIFO one word at a time, pulling apart the character and
353 * the status. Update error counters depending on status
355 if (ChanStatus & STATMODE) {
356 #ifdef ROCKET_DEBUG_RECEIVE
357 printk(KERN_INFO "Ignore %x, read %x...", info->ignore_status_mask,
358 info->read_status_mask);
363 CharNStat = sInW(sGetTxRxDataIO(cp));
364 #ifdef ROCKET_DEBUG_RECEIVE
365 printk(KERN_INFO "%x...", CharNStat);
367 if (CharNStat & STMBREAKH)
368 CharNStat &= ~(STMFRAMEH | STMPARITYH);
369 if (CharNStat & info->ignore_status_mask) {
373 CharNStat &= info->read_status_mask;
374 if (CharNStat & STMBREAKH)
376 else if (CharNStat & STMPARITYH)
378 else if (CharNStat & STMFRAMEH)
380 else if (CharNStat & STMRCVROVRH)
384 tty_insert_flip_char(tty, CharNStat & 0xff, flag);
389 * after we've emptied the FIFO in status mode, turn
390 * status mode back off
392 if (sGetRxCnt(cp) == 0) {
393 #ifdef ROCKET_DEBUG_RECEIVE
394 printk(KERN_INFO "Status mode off.\n");
396 sDisRxStatusMode(cp);
400 * we aren't in status mode, so read down the FIFO two
401 * characters at time by doing repeated word IO
404 space = tty_prepare_flip_string(tty, &cbuf, ToRecv);
405 if (space < ToRecv) {
406 #ifdef ROCKET_DEBUG_RECEIVE
407 printk(KERN_INFO "rp_do_receive:insufficient space ToRecv=%d space=%d\n", ToRecv, space);
415 sInStrW(sGetTxRxDataIO(cp), (unsigned short *) cbuf, wRecv);
417 cbuf[ToRecv - 1] = sInB(sGetTxRxDataIO(cp));
419 /* Push the data up to the tty layer */
420 tty_flip_buffer_push(tty);
424 * Serial port transmit data function. Called from the timer polling loop as a
425 * result of a bit set in xmit_flags[], indicating data (from the tty layer) is ready
426 * to be sent out the serial port. Data is buffered in rp_table[line].xmit_buf, it is
427 * moved to the port's xmit FIFO. *info is critical data, protected by spinlocks.
429 static void rp_do_transmit(struct r_port *info)
432 CHANNEL_t *cp = &info->channel;
433 struct tty_struct *tty;
436 #ifdef ROCKET_DEBUG_INTR
437 printk(KERN_INFO "rp_do_transmit ");
442 printk(KERN_INFO "rp: WARNING rp_do_transmit called with info->tty==NULL\n");
443 clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
447 spin_lock_irqsave(&info->slock, flags);
449 info->xmit_fifo_room = TXFIFO_SIZE - sGetTxCnt(cp);
451 /* Loop sending data to FIFO until done or FIFO full */
453 if (tty->stopped || tty->hw_stopped)
455 c = min(info->xmit_fifo_room, min(info->xmit_cnt, XMIT_BUF_SIZE - info->xmit_tail));
456 if (c <= 0 || info->xmit_fifo_room <= 0)
458 sOutStrW(sGetTxRxDataIO(cp), (unsigned short *) (info->xmit_buf + info->xmit_tail), c / 2);
460 sOutB(sGetTxRxDataIO(cp), info->xmit_buf[info->xmit_tail + c - 1]);
461 info->xmit_tail += c;
462 info->xmit_tail &= XMIT_BUF_SIZE - 1;
464 info->xmit_fifo_room -= c;
465 #ifdef ROCKET_DEBUG_INTR
466 printk(KERN_INFO "tx %d chars...", c);
470 if (info->xmit_cnt == 0)
471 clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
473 if (info->xmit_cnt < WAKEUP_CHARS) {
475 #ifdef ROCKETPORT_HAVE_POLL_WAIT
476 wake_up_interruptible(&tty->poll_wait);
480 spin_unlock_irqrestore(&info->slock, flags);
482 #ifdef ROCKET_DEBUG_INTR
483 printk(KERN_INFO "(%d,%d,%d,%d)...", info->xmit_cnt, info->xmit_head,
484 info->xmit_tail, info->xmit_fifo_room);
489 * Called when a serial port signals it has read data in it's RX FIFO.
490 * It checks what interrupts are pending and services them, including
491 * receiving serial data.
493 static void rp_handle_port(struct r_port *info)
496 struct tty_struct *tty;
497 unsigned int IntMask, ChanStatus;
502 if ((info->flags & ROCKET_INITIALIZED) == 0) {
503 printk(KERN_INFO "rp: WARNING: rp_handle_port called with info->flags & NOT_INIT\n");
507 printk(KERN_INFO "rp: WARNING: rp_handle_port called with info->tty==NULL\n");
513 IntMask = sGetChanIntID(cp) & info->intmask;
514 #ifdef ROCKET_DEBUG_INTR
515 printk(KERN_INFO "rp_interrupt %02x...", IntMask);
517 ChanStatus = sGetChanStatus(cp);
518 if (IntMask & RXF_TRIG) { /* Rx FIFO trigger level */
519 rp_do_receive(info, tty, cp, ChanStatus);
521 if (IntMask & DELTA_CD) { /* CD change */
522 #if (defined(ROCKET_DEBUG_OPEN) || defined(ROCKET_DEBUG_INTR) || defined(ROCKET_DEBUG_HANGUP))
523 printk(KERN_INFO "ttyR%d CD now %s...", info->line,
524 (ChanStatus & CD_ACT) ? "on" : "off");
526 if (!(ChanStatus & CD_ACT) && info->cd_status) {
527 #ifdef ROCKET_DEBUG_HANGUP
528 printk(KERN_INFO "CD drop, calling hangup.\n");
532 info->cd_status = (ChanStatus & CD_ACT) ? 1 : 0;
533 wake_up_interruptible(&info->open_wait);
535 #ifdef ROCKET_DEBUG_INTR
536 if (IntMask & DELTA_CTS) { /* CTS change */
537 printk(KERN_INFO "CTS change...\n");
539 if (IntMask & DELTA_DSR) { /* DSR change */
540 printk(KERN_INFO "DSR change...\n");
546 * The top level polling routine. Repeats every 1/100 HZ (10ms).
548 static void rp_do_poll(unsigned long dummy)
551 int ctrl, aiop, ch, line, i;
552 unsigned int xmitmask;
553 unsigned int CtlMask;
554 unsigned char AiopMask;
557 /* Walk through all the boards (ctrl's) */
558 for (ctrl = 0; ctrl < max_board; ctrl++) {
559 if (rcktpt_io_addr[ctrl] <= 0)
562 /* Get a ptr to the board's control struct */
563 ctlp = sCtlNumToCtlPtr(ctrl);
565 /* Get the interupt status from the board */
567 if (ctlp->BusType == isPCI)
568 CtlMask = sPCIGetControllerIntStatus(ctlp);
571 CtlMask = sGetControllerIntStatus(ctlp);
573 /* Check if any AIOP read bits are set */
574 for (aiop = 0; CtlMask; aiop++) {
575 bit = ctlp->AiopIntrBits[aiop];
578 AiopMask = sGetAiopIntStatus(ctlp, aiop);
580 /* Check if any port read bits are set */
581 for (ch = 0; AiopMask; AiopMask >>= 1, ch++) {
584 /* Get the line number (/dev/ttyRx number). */
585 /* Read the data from the port. */
586 line = GetLineNumber(ctrl, aiop, ch);
587 rp_handle_port(rp_table[line]);
593 xmitmask = xmit_flags[ctrl];
596 * xmit_flags contains bit-significant flags, indicating there is data
597 * to xmit on the port. Bit 0 is port 0 on this board, bit 1 is port
598 * 1, ... (32 total possible). The variable i has the aiop and ch
599 * numbers encoded in it (port 0-7 are aiop0, 8-15 are aiop1, etc).
602 for (i = 0; i < rocketModel[ctrl].numPorts; i++) {
603 if (xmitmask & (1 << i)) {
604 aiop = (i & 0x18) >> 3;
606 line = GetLineNumber(ctrl, aiop, ch);
607 rp_do_transmit(rp_table[line]);
614 * Reset the timer so we get called at the next clock tick (10ms).
616 if (atomic_read(&rp_num_ports_open))
617 mod_timer(&rocket_timer, jiffies + POLL_PERIOD);
621 * Initializes the r_port structure for a port, as well as enabling the port on
623 * Inputs: board, aiop, chan numbers
625 static void init_r_port(int board, int aiop, int chan, struct pci_dev *pci_dev)
632 /* Get the next available line number */
633 line = SetLineNumber(board, aiop, chan);
635 ctlp = sCtlNumToCtlPtr(board);
637 /* Get a r_port struct for the port, fill it in and save it globally, indexed by line number */
638 info = kmalloc(sizeof (struct r_port), GFP_KERNEL);
640 printk(KERN_INFO "Couldn't allocate info struct for line #%d\n", line);
643 memset(info, 0, sizeof (struct r_port));
645 info->magic = RPORT_MAGIC;
651 info->closing_wait = 3000;
652 info->close_delay = 50;
653 init_waitqueue_head(&info->open_wait);
654 init_waitqueue_head(&info->close_wait);
655 info->flags &= ~ROCKET_MODE_MASK;
656 switch (pc104[board][line]) {
658 info->flags |= ROCKET_MODE_RS422;
661 info->flags |= ROCKET_MODE_RS485;
665 info->flags |= ROCKET_MODE_RS232;
669 info->intmask = RXF_TRIG | TXFIFO_MT | SRC_INT | DELTA_CD | DELTA_CTS | DELTA_DSR;
670 if (sInitChan(ctlp, &info->channel, aiop, chan) == 0) {
671 printk(KERN_INFO "RocketPort sInitChan(%d, %d, %d) failed!\n", board, aiop, chan);
676 rocketMode = info->flags & ROCKET_MODE_MASK;
678 if ((info->flags & ROCKET_RTS_TOGGLE) || (rocketMode == ROCKET_MODE_RS485))
679 sEnRTSToggle(&info->channel);
681 sDisRTSToggle(&info->channel);
683 if (ctlp->boardType == ROCKET_TYPE_PC104) {
684 switch (rocketMode) {
685 case ROCKET_MODE_RS485:
686 sSetInterfaceMode(&info->channel, InterfaceModeRS485);
688 case ROCKET_MODE_RS422:
689 sSetInterfaceMode(&info->channel, InterfaceModeRS422);
691 case ROCKET_MODE_RS232:
693 if (info->flags & ROCKET_RTS_TOGGLE)
694 sSetInterfaceMode(&info->channel, InterfaceModeRS232T);
696 sSetInterfaceMode(&info->channel, InterfaceModeRS232);
700 spin_lock_init(&info->slock);
701 mutex_init(&info->write_mtx);
702 rp_table[line] = info;
704 tty_register_device(rocket_driver, line, &pci_dev->dev);
708 * Configures a rocketport port according to its termio settings. Called from
709 * user mode into the driver (exception handler). *info CD manipulation is spinlock protected.
711 static void configure_r_port(struct r_port *info,
712 struct ktermios *old_termios)
717 int bits, baud, divisor;
720 if (!info->tty || !info->tty->termios)
723 cflag = info->tty->termios->c_cflag;
725 /* Byte size and parity */
726 if ((cflag & CSIZE) == CS8) {
733 if (cflag & CSTOPB) {
740 if (cflag & PARENB) {
743 if (cflag & PARODD) {
753 baud = tty_get_baud_rate(info->tty);
756 divisor = ((rp_baud_base[info->board] + (baud >> 1)) / baud) - 1;
757 if ((divisor >= 8192 || divisor < 0) && old_termios) {
758 info->tty->termios->c_cflag &= ~CBAUD;
759 info->tty->termios->c_cflag |=
760 (old_termios->c_cflag & CBAUD);
761 baud = tty_get_baud_rate(info->tty);
764 divisor = (rp_baud_base[info->board] / baud) - 1;
766 if (divisor >= 8192 || divisor < 0) {
768 divisor = (rp_baud_base[info->board] / baud) - 1;
770 info->cps = baud / bits;
771 sSetBaud(cp, divisor);
773 if (cflag & CRTSCTS) {
774 info->intmask |= DELTA_CTS;
777 info->intmask &= ~DELTA_CTS;
780 if (cflag & CLOCAL) {
781 info->intmask &= ~DELTA_CD;
783 spin_lock_irqsave(&info->slock, flags);
784 if (sGetChanStatus(cp) & CD_ACT)
788 info->intmask |= DELTA_CD;
789 spin_unlock_irqrestore(&info->slock, flags);
793 * Handle software flow control in the board
795 #ifdef ROCKET_SOFT_FLOW
796 if (I_IXON(info->tty)) {
797 sEnTxSoftFlowCtl(cp);
798 if (I_IXANY(info->tty)) {
803 sSetTxXONChar(cp, START_CHAR(info->tty));
804 sSetTxXOFFChar(cp, STOP_CHAR(info->tty));
806 sDisTxSoftFlowCtl(cp);
813 * Set up ignore/read mask words
815 info->read_status_mask = STMRCVROVRH | 0xFF;
816 if (I_INPCK(info->tty))
817 info->read_status_mask |= STMFRAMEH | STMPARITYH;
818 if (I_BRKINT(info->tty) || I_PARMRK(info->tty))
819 info->read_status_mask |= STMBREAKH;
822 * Characters to ignore
824 info->ignore_status_mask = 0;
825 if (I_IGNPAR(info->tty))
826 info->ignore_status_mask |= STMFRAMEH | STMPARITYH;
827 if (I_IGNBRK(info->tty)) {
828 info->ignore_status_mask |= STMBREAKH;
830 * If we're ignoring parity and break indicators,
831 * ignore overruns too. (For real raw support).
833 if (I_IGNPAR(info->tty))
834 info->ignore_status_mask |= STMRCVROVRH;
837 rocketMode = info->flags & ROCKET_MODE_MASK;
839 if ((info->flags & ROCKET_RTS_TOGGLE)
840 || (rocketMode == ROCKET_MODE_RS485))
845 sSetRTS(&info->channel);
847 if (cp->CtlP->boardType == ROCKET_TYPE_PC104) {
848 switch (rocketMode) {
849 case ROCKET_MODE_RS485:
850 sSetInterfaceMode(cp, InterfaceModeRS485);
852 case ROCKET_MODE_RS422:
853 sSetInterfaceMode(cp, InterfaceModeRS422);
855 case ROCKET_MODE_RS232:
857 if (info->flags & ROCKET_RTS_TOGGLE)
858 sSetInterfaceMode(cp, InterfaceModeRS232T);
860 sSetInterfaceMode(cp, InterfaceModeRS232);
866 /* info->count is considered critical, protected by spinlocks. */
867 static int block_til_ready(struct tty_struct *tty, struct file *filp,
870 DECLARE_WAITQUEUE(wait, current);
872 int do_clocal = 0, extra_count = 0;
876 * If the device is in the middle of being closed, then block
877 * until it's done, and then try again.
879 if (tty_hung_up_p(filp))
880 return ((info->flags & ROCKET_HUP_NOTIFY) ? -EAGAIN : -ERESTARTSYS);
881 if (info->flags & ROCKET_CLOSING) {
882 interruptible_sleep_on(&info->close_wait);
883 return ((info->flags & ROCKET_HUP_NOTIFY) ? -EAGAIN : -ERESTARTSYS);
887 * If non-blocking mode is set, or the port is not enabled,
888 * then make the check up front and then exit.
890 if ((filp->f_flags & O_NONBLOCK) || (tty->flags & (1 << TTY_IO_ERROR))) {
891 info->flags |= ROCKET_NORMAL_ACTIVE;
894 if (tty->termios->c_cflag & CLOCAL)
898 * Block waiting for the carrier detect and the line to become free. While we are in
899 * this loop, info->count is dropped by one, so that rp_close() knows when to free things.
900 * We restore it upon exit, either normal or abnormal.
903 add_wait_queue(&info->open_wait, &wait);
904 #ifdef ROCKET_DEBUG_OPEN
905 printk(KERN_INFO "block_til_ready before block: ttyR%d, count = %d\n", info->line, info->count);
907 spin_lock_irqsave(&info->slock, flags);
909 #ifdef ROCKET_DISABLE_SIMUSAGE
910 info->flags |= ROCKET_NORMAL_ACTIVE;
912 if (!tty_hung_up_p(filp)) {
917 info->blocked_open++;
919 spin_unlock_irqrestore(&info->slock, flags);
922 if (tty->termios->c_cflag & CBAUD) {
923 sSetDTR(&info->channel);
924 sSetRTS(&info->channel);
926 set_current_state(TASK_INTERRUPTIBLE);
927 if (tty_hung_up_p(filp) || !(info->flags & ROCKET_INITIALIZED)) {
928 if (info->flags & ROCKET_HUP_NOTIFY)
931 retval = -ERESTARTSYS;
934 if (!(info->flags & ROCKET_CLOSING) && (do_clocal || (sGetChanStatusLo(&info->channel) & CD_ACT)))
936 if (signal_pending(current)) {
937 retval = -ERESTARTSYS;
940 #ifdef ROCKET_DEBUG_OPEN
941 printk(KERN_INFO "block_til_ready blocking: ttyR%d, count = %d, flags=0x%0x\n",
942 info->line, info->count, info->flags);
944 schedule(); /* Don't hold spinlock here, will hang PC */
946 __set_current_state(TASK_RUNNING);
947 remove_wait_queue(&info->open_wait, &wait);
949 spin_lock_irqsave(&info->slock, flags);
953 info->blocked_open--;
955 spin_unlock_irqrestore(&info->slock, flags);
957 #ifdef ROCKET_DEBUG_OPEN
958 printk(KERN_INFO "block_til_ready after blocking: ttyR%d, count = %d\n",
959 info->line, info->count);
963 info->flags |= ROCKET_NORMAL_ACTIVE;
968 * Exception handler that opens a serial port. Creates xmit_buf storage, fills in
969 * port's r_port struct. Initializes the port hardware.
971 static int rp_open(struct tty_struct *tty, struct file *filp)
974 int line = 0, retval;
978 line = TTY_GET_LINE(tty);
979 if ((line < 0) || (line >= MAX_RP_PORTS) || ((info = rp_table[line]) == NULL))
982 page = __get_free_page(GFP_KERNEL);
986 if (info->flags & ROCKET_CLOSING) {
987 interruptible_sleep_on(&info->close_wait);
989 return ((info->flags & ROCKET_HUP_NOTIFY) ? -EAGAIN : -ERESTARTSYS);
993 * We must not sleep from here until the port is marked fully in use.
998 info->xmit_buf = (unsigned char *) page;
1000 tty->driver_data = info;
1003 if (info->count++ == 0) {
1004 atomic_inc(&rp_num_ports_open);
1006 #ifdef ROCKET_DEBUG_OPEN
1007 printk(KERN_INFO "rocket mod++ = %d...", atomic_read(&rp_num_ports_open));
1010 #ifdef ROCKET_DEBUG_OPEN
1011 printk(KERN_INFO "rp_open ttyR%d, count=%d\n", info->line, info->count);
1015 * Info->count is now 1; so it's safe to sleep now.
1017 info->session = process_session(current);
1018 info->pgrp = process_group(current);
1020 if ((info->flags & ROCKET_INITIALIZED) == 0) {
1021 cp = &info->channel;
1022 sSetRxTrigger(cp, TRIG_1);
1023 if (sGetChanStatus(cp) & CD_ACT)
1024 info->cd_status = 1;
1026 info->cd_status = 0;
1027 sDisRxStatusMode(cp);
1031 sEnInterrupts(cp, (TXINT_EN | MCINT_EN | RXINT_EN | SRCINT_EN | CHANINT_EN));
1032 sSetRxTrigger(cp, TRIG_1);
1035 sDisRxStatusMode(cp);
1039 sDisTxSoftFlowCtl(cp);
1044 info->flags |= ROCKET_INITIALIZED;
1047 * Set up the tty->alt_speed kludge
1049 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_HI)
1050 info->tty->alt_speed = 57600;
1051 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_VHI)
1052 info->tty->alt_speed = 115200;
1053 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_SHI)
1054 info->tty->alt_speed = 230400;
1055 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_WARP)
1056 info->tty->alt_speed = 460800;
1058 configure_r_port(info, NULL);
1059 if (tty->termios->c_cflag & CBAUD) {
1064 /* Starts (or resets) the maint polling loop */
1065 mod_timer(&rocket_timer, jiffies + POLL_PERIOD);
1067 retval = block_til_ready(tty, filp, info);
1069 #ifdef ROCKET_DEBUG_OPEN
1070 printk(KERN_INFO "rp_open returning after block_til_ready with %d\n", retval);
1078 * Exception handler that closes a serial port. info->count is considered critical.
1080 static void rp_close(struct tty_struct *tty, struct file *filp)
1082 struct r_port *info = (struct r_port *) tty->driver_data;
1083 unsigned long flags;
1087 if (rocket_paranoia_check(info, "rp_close"))
1090 #ifdef ROCKET_DEBUG_OPEN
1091 printk(KERN_INFO "rp_close ttyR%d, count = %d\n", info->line, info->count);
1094 if (tty_hung_up_p(filp))
1096 spin_lock_irqsave(&info->slock, flags);
1098 if ((tty->count == 1) && (info->count != 1)) {
1100 * Uh, oh. tty->count is 1, which means that the tty
1101 * structure will be freed. Info->count should always
1102 * be one in these conditions. If it's greater than
1103 * one, we've got real problems, since it means the
1104 * serial port won't be shutdown.
1106 printk(KERN_INFO "rp_close: bad serial port count; tty->count is 1, "
1107 "info->count is %d\n", info->count);
1110 if (--info->count < 0) {
1111 printk(KERN_INFO "rp_close: bad serial port count for ttyR%d: %d\n",
1112 info->line, info->count);
1116 spin_unlock_irqrestore(&info->slock, flags);
1119 info->flags |= ROCKET_CLOSING;
1120 spin_unlock_irqrestore(&info->slock, flags);
1122 cp = &info->channel;
1125 * Notify the line discpline to only process XON/XOFF characters
1130 * If transmission was throttled by the application request,
1131 * just flush the xmit buffer.
1133 if (tty->flow_stopped)
1134 rp_flush_buffer(tty);
1137 * Wait for the transmit buffer to clear
1139 if (info->closing_wait != ROCKET_CLOSING_WAIT_NONE)
1140 tty_wait_until_sent(tty, info->closing_wait);
1142 * Before we drop DTR, make sure the UART transmitter
1143 * has completely drained; this is especially
1144 * important if there is a transmit FIFO!
1146 timeout = (sGetTxCnt(cp) + 1) * HZ / info->cps;
1149 rp_wait_until_sent(tty, timeout);
1150 clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
1153 sDisInterrupts(cp, (TXINT_EN | MCINT_EN | RXINT_EN | SRCINT_EN | CHANINT_EN));
1155 sDisTxSoftFlowCtl(cp);
1163 if (TTY_DRIVER_FLUSH_BUFFER_EXISTS(tty))
1164 TTY_DRIVER_FLUSH_BUFFER(tty);
1166 tty_ldisc_flush(tty);
1168 clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
1170 if (info->blocked_open) {
1171 if (info->close_delay) {
1172 msleep_interruptible(jiffies_to_msecs(info->close_delay));
1174 wake_up_interruptible(&info->open_wait);
1176 if (info->xmit_buf) {
1177 free_page((unsigned long) info->xmit_buf);
1178 info->xmit_buf = NULL;
1181 info->flags &= ~(ROCKET_INITIALIZED | ROCKET_CLOSING | ROCKET_NORMAL_ACTIVE);
1183 wake_up_interruptible(&info->close_wait);
1184 atomic_dec(&rp_num_ports_open);
1186 #ifdef ROCKET_DEBUG_OPEN
1187 printk(KERN_INFO "rocket mod-- = %d...", atomic_read(&rp_num_ports_open));
1188 printk(KERN_INFO "rp_close ttyR%d complete shutdown\n", info->line);
1193 static void rp_set_termios(struct tty_struct *tty,
1194 struct ktermios *old_termios)
1196 struct r_port *info = (struct r_port *) tty->driver_data;
1200 if (rocket_paranoia_check(info, "rp_set_termios"))
1203 cflag = tty->termios->c_cflag;
1205 if (cflag == old_termios->c_cflag)
1209 * This driver doesn't support CS5 or CS6
1211 if (((cflag & CSIZE) == CS5) || ((cflag & CSIZE) == CS6))
1212 tty->termios->c_cflag =
1213 ((cflag & ~CSIZE) | (old_termios->c_cflag & CSIZE));
1215 configure_r_port(info, old_termios);
1217 cp = &info->channel;
1219 /* Handle transition to B0 status */
1220 if ((old_termios->c_cflag & CBAUD) && !(tty->termios->c_cflag & CBAUD)) {
1225 /* Handle transition away from B0 status */
1226 if (!(old_termios->c_cflag & CBAUD) && (tty->termios->c_cflag & CBAUD)) {
1227 if (!tty->hw_stopped || !(tty->termios->c_cflag & CRTSCTS))
1232 if ((old_termios->c_cflag & CRTSCTS) && !(tty->termios->c_cflag & CRTSCTS)) {
1233 tty->hw_stopped = 0;
1238 static void rp_break(struct tty_struct *tty, int break_state)
1240 struct r_port *info = (struct r_port *) tty->driver_data;
1241 unsigned long flags;
1243 if (rocket_paranoia_check(info, "rp_break"))
1246 spin_lock_irqsave(&info->slock, flags);
1247 if (break_state == -1)
1248 sSendBreak(&info->channel);
1250 sClrBreak(&info->channel);
1251 spin_unlock_irqrestore(&info->slock, flags);
1255 * sGetChanRI used to be a macro in rocket_int.h. When the functionality for
1256 * the UPCI boards was added, it was decided to make this a function because
1257 * the macro was getting too complicated. All cases except the first one
1258 * (UPCIRingInd) are taken directly from the original macro.
1260 static int sGetChanRI(CHANNEL_T * ChP)
1262 CONTROLLER_t *CtlP = ChP->CtlP;
1263 int ChanNum = ChP->ChanNum;
1266 if (CtlP->UPCIRingInd)
1267 RingInd = !(sInB(CtlP->UPCIRingInd) & sBitMapSetTbl[ChanNum]);
1268 else if (CtlP->AltChanRingIndicator)
1269 RingInd = sInB((ByteIO_t) (ChP->ChanStat + 8)) & DSR_ACT;
1270 else if (CtlP->boardType == ROCKET_TYPE_PC104)
1271 RingInd = !(sInB(CtlP->AiopIO[3]) & sBitMapSetTbl[ChanNum]);
1276 /********************************************************************************************/
1277 /* Here are the routines used by rp_ioctl. These are all called from exception handlers. */
1280 * Returns the state of the serial modem control lines. These next 2 functions
1281 * are the way kernel versions > 2.5 handle modem control lines rather than IOCTLs.
1283 static int rp_tiocmget(struct tty_struct *tty, struct file *file)
1285 struct r_port *info = (struct r_port *)tty->driver_data;
1286 unsigned int control, result, ChanStatus;
1288 ChanStatus = sGetChanStatusLo(&info->channel);
1289 control = info->channel.TxControl[3];
1290 result = ((control & SET_RTS) ? TIOCM_RTS : 0) |
1291 ((control & SET_DTR) ? TIOCM_DTR : 0) |
1292 ((ChanStatus & CD_ACT) ? TIOCM_CAR : 0) |
1293 (sGetChanRI(&info->channel) ? TIOCM_RNG : 0) |
1294 ((ChanStatus & DSR_ACT) ? TIOCM_DSR : 0) |
1295 ((ChanStatus & CTS_ACT) ? TIOCM_CTS : 0);
1301 * Sets the modem control lines
1303 static int rp_tiocmset(struct tty_struct *tty, struct file *file,
1304 unsigned int set, unsigned int clear)
1306 struct r_port *info = (struct r_port *)tty->driver_data;
1308 if (set & TIOCM_RTS)
1309 info->channel.TxControl[3] |= SET_RTS;
1310 if (set & TIOCM_DTR)
1311 info->channel.TxControl[3] |= SET_DTR;
1312 if (clear & TIOCM_RTS)
1313 info->channel.TxControl[3] &= ~SET_RTS;
1314 if (clear & TIOCM_DTR)
1315 info->channel.TxControl[3] &= ~SET_DTR;
1317 sOutDW(info->channel.IndexAddr, *(DWord_t *) & (info->channel.TxControl[0]));
1321 static int get_config(struct r_port *info, struct rocket_config __user *retinfo)
1323 struct rocket_config tmp;
1327 memset(&tmp, 0, sizeof (tmp));
1328 tmp.line = info->line;
1329 tmp.flags = info->flags;
1330 tmp.close_delay = info->close_delay;
1331 tmp.closing_wait = info->closing_wait;
1332 tmp.port = rcktpt_io_addr[(info->line >> 5) & 3];
1334 if (copy_to_user(retinfo, &tmp, sizeof (*retinfo)))
1339 static int set_config(struct r_port *info, struct rocket_config __user *new_info)
1341 struct rocket_config new_serial;
1343 if (copy_from_user(&new_serial, new_info, sizeof (new_serial)))
1346 if (!capable(CAP_SYS_ADMIN))
1348 if ((new_serial.flags & ~ROCKET_USR_MASK) != (info->flags & ~ROCKET_USR_MASK))
1350 info->flags = ((info->flags & ~ROCKET_USR_MASK) | (new_serial.flags & ROCKET_USR_MASK));
1351 configure_r_port(info, NULL);
1355 info->flags = ((info->flags & ~ROCKET_FLAGS) | (new_serial.flags & ROCKET_FLAGS));
1356 info->close_delay = new_serial.close_delay;
1357 info->closing_wait = new_serial.closing_wait;
1359 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_HI)
1360 info->tty->alt_speed = 57600;
1361 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_VHI)
1362 info->tty->alt_speed = 115200;
1363 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_SHI)
1364 info->tty->alt_speed = 230400;
1365 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_WARP)
1366 info->tty->alt_speed = 460800;
1368 configure_r_port(info, NULL);
1373 * This function fills in a rocket_ports struct with information
1374 * about what boards/ports are in the system. This info is passed
1375 * to user space. See setrocket.c where the info is used to create
1376 * the /dev/ttyRx ports.
1378 static int get_ports(struct r_port *info, struct rocket_ports __user *retports)
1380 struct rocket_ports tmp;
1385 memset(&tmp, 0, sizeof (tmp));
1386 tmp.tty_major = rocket_driver->major;
1388 for (board = 0; board < 4; board++) {
1389 tmp.rocketModel[board].model = rocketModel[board].model;
1390 strcpy(tmp.rocketModel[board].modelString, rocketModel[board].modelString);
1391 tmp.rocketModel[board].numPorts = rocketModel[board].numPorts;
1392 tmp.rocketModel[board].loadrm2 = rocketModel[board].loadrm2;
1393 tmp.rocketModel[board].startingPortNumber = rocketModel[board].startingPortNumber;
1395 if (copy_to_user(retports, &tmp, sizeof (*retports)))
1400 static int reset_rm2(struct r_port *info, void __user *arg)
1404 if (copy_from_user(&reset, arg, sizeof (int)))
1409 if (rcktpt_type[info->board] != ROCKET_TYPE_MODEMII &&
1410 rcktpt_type[info->board] != ROCKET_TYPE_MODEMIII)
1413 if (info->ctlp->BusType == isISA)
1414 sModemReset(info->ctlp, info->chan, reset);
1416 sPCIModemReset(info->ctlp, info->chan, reset);
1421 static int get_version(struct r_port *info, struct rocket_version __user *retvers)
1423 if (copy_to_user(retvers, &driver_version, sizeof (*retvers)))
1428 /* IOCTL call handler into the driver */
1429 static int rp_ioctl(struct tty_struct *tty, struct file *file,
1430 unsigned int cmd, unsigned long arg)
1432 struct r_port *info = (struct r_port *) tty->driver_data;
1433 void __user *argp = (void __user *)arg;
1435 if (cmd != RCKP_GET_PORTS && rocket_paranoia_check(info, "rp_ioctl"))
1439 case RCKP_GET_STRUCT:
1440 if (copy_to_user(argp, info, sizeof (struct r_port)))
1443 case RCKP_GET_CONFIG:
1444 return get_config(info, argp);
1445 case RCKP_SET_CONFIG:
1446 return set_config(info, argp);
1447 case RCKP_GET_PORTS:
1448 return get_ports(info, argp);
1449 case RCKP_RESET_RM2:
1450 return reset_rm2(info, argp);
1451 case RCKP_GET_VERSION:
1452 return get_version(info, argp);
1454 return -ENOIOCTLCMD;
1459 static void rp_send_xchar(struct tty_struct *tty, char ch)
1461 struct r_port *info = (struct r_port *) tty->driver_data;
1464 if (rocket_paranoia_check(info, "rp_send_xchar"))
1467 cp = &info->channel;
1469 sWriteTxPrioByte(cp, ch);
1471 sWriteTxByte(sGetTxRxDataIO(cp), ch);
1474 static void rp_throttle(struct tty_struct *tty)
1476 struct r_port *info = (struct r_port *) tty->driver_data;
1479 #ifdef ROCKET_DEBUG_THROTTLE
1480 printk(KERN_INFO "throttle %s: %d....\n", tty->name,
1481 tty->ldisc.chars_in_buffer(tty));
1484 if (rocket_paranoia_check(info, "rp_throttle"))
1487 cp = &info->channel;
1489 rp_send_xchar(tty, STOP_CHAR(tty));
1491 sClrRTS(&info->channel);
1494 static void rp_unthrottle(struct tty_struct *tty)
1496 struct r_port *info = (struct r_port *) tty->driver_data;
1498 #ifdef ROCKET_DEBUG_THROTTLE
1499 printk(KERN_INFO "unthrottle %s: %d....\n", tty->name,
1500 tty->ldisc.chars_in_buffer(tty));
1503 if (rocket_paranoia_check(info, "rp_throttle"))
1506 cp = &info->channel;
1508 rp_send_xchar(tty, START_CHAR(tty));
1510 sSetRTS(&info->channel);
1514 * ------------------------------------------------------------
1515 * rp_stop() and rp_start()
1517 * This routines are called before setting or resetting tty->stopped.
1518 * They enable or disable transmitter interrupts, as necessary.
1519 * ------------------------------------------------------------
1521 static void rp_stop(struct tty_struct *tty)
1523 struct r_port *info = (struct r_port *) tty->driver_data;
1525 #ifdef ROCKET_DEBUG_FLOW
1526 printk(KERN_INFO "stop %s: %d %d....\n", tty->name,
1527 info->xmit_cnt, info->xmit_fifo_room);
1530 if (rocket_paranoia_check(info, "rp_stop"))
1533 if (sGetTxCnt(&info->channel))
1534 sDisTransmit(&info->channel);
1537 static void rp_start(struct tty_struct *tty)
1539 struct r_port *info = (struct r_port *) tty->driver_data;
1541 #ifdef ROCKET_DEBUG_FLOW
1542 printk(KERN_INFO "start %s: %d %d....\n", tty->name,
1543 info->xmit_cnt, info->xmit_fifo_room);
1546 if (rocket_paranoia_check(info, "rp_stop"))
1549 sEnTransmit(&info->channel);
1550 set_bit((info->aiop * 8) + info->chan,
1551 (void *) &xmit_flags[info->board]);
1555 * rp_wait_until_sent() --- wait until the transmitter is empty
1557 static void rp_wait_until_sent(struct tty_struct *tty, int timeout)
1559 struct r_port *info = (struct r_port *) tty->driver_data;
1561 unsigned long orig_jiffies;
1562 int check_time, exit_time;
1565 if (rocket_paranoia_check(info, "rp_wait_until_sent"))
1568 cp = &info->channel;
1570 orig_jiffies = jiffies;
1571 #ifdef ROCKET_DEBUG_WAIT_UNTIL_SENT
1572 printk(KERN_INFO "In RP_wait_until_sent(%d) (jiff=%lu)...", timeout,
1574 printk(KERN_INFO "cps=%d...", info->cps);
1577 txcnt = sGetTxCnt(cp);
1579 if (sGetChanStatusLo(cp) & TXSHRMT)
1581 check_time = (HZ / info->cps) / 5;
1583 check_time = HZ * txcnt / info->cps;
1586 exit_time = orig_jiffies + timeout - jiffies;
1589 if (exit_time < check_time)
1590 check_time = exit_time;
1592 if (check_time == 0)
1594 #ifdef ROCKET_DEBUG_WAIT_UNTIL_SENT
1595 printk(KERN_INFO "txcnt = %d (jiff=%lu,check=%d)...", txcnt, jiffies, check_time);
1597 msleep_interruptible(jiffies_to_msecs(check_time));
1598 if (signal_pending(current))
1601 __set_current_state(TASK_RUNNING);
1602 #ifdef ROCKET_DEBUG_WAIT_UNTIL_SENT
1603 printk(KERN_INFO "txcnt = %d (jiff=%lu)...done\n", txcnt, jiffies);
1608 * rp_hangup() --- called by tty_hangup() when a hangup is signaled.
1610 static void rp_hangup(struct tty_struct *tty)
1613 struct r_port *info = (struct r_port *) tty->driver_data;
1615 if (rocket_paranoia_check(info, "rp_hangup"))
1618 #if (defined(ROCKET_DEBUG_OPEN) || defined(ROCKET_DEBUG_HANGUP))
1619 printk(KERN_INFO "rp_hangup of ttyR%d...", info->line);
1621 rp_flush_buffer(tty);
1622 if (info->flags & ROCKET_CLOSING)
1625 atomic_dec(&rp_num_ports_open);
1626 clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
1629 info->flags &= ~ROCKET_NORMAL_ACTIVE;
1632 cp = &info->channel;
1635 sDisInterrupts(cp, (TXINT_EN | MCINT_EN | RXINT_EN | SRCINT_EN | CHANINT_EN));
1637 sDisTxSoftFlowCtl(cp);
1639 info->flags &= ~ROCKET_INITIALIZED;
1641 wake_up_interruptible(&info->open_wait);
1645 * Exception handler - write char routine. The RocketPort driver uses a
1646 * double-buffering strategy, with the twist that if the in-memory CPU
1647 * buffer is empty, and there's space in the transmit FIFO, the
1648 * writing routines will write directly to transmit FIFO.
1649 * Write buffer and counters protected by spinlocks
1651 static void rp_put_char(struct tty_struct *tty, unsigned char ch)
1653 struct r_port *info = (struct r_port *) tty->driver_data;
1655 unsigned long flags;
1657 if (rocket_paranoia_check(info, "rp_put_char"))
1661 * Grab the port write mutex, locking out other processes that try to
1662 * write to this port
1664 mutex_lock(&info->write_mtx);
1666 #ifdef ROCKET_DEBUG_WRITE
1667 printk(KERN_INFO "rp_put_char %c...", ch);
1670 spin_lock_irqsave(&info->slock, flags);
1671 cp = &info->channel;
1673 if (!tty->stopped && !tty->hw_stopped && info->xmit_fifo_room == 0)
1674 info->xmit_fifo_room = TXFIFO_SIZE - sGetTxCnt(cp);
1676 if (tty->stopped || tty->hw_stopped || info->xmit_fifo_room == 0 || info->xmit_cnt != 0) {
1677 info->xmit_buf[info->xmit_head++] = ch;
1678 info->xmit_head &= XMIT_BUF_SIZE - 1;
1680 set_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
1682 sOutB(sGetTxRxDataIO(cp), ch);
1683 info->xmit_fifo_room--;
1685 spin_unlock_irqrestore(&info->slock, flags);
1686 mutex_unlock(&info->write_mtx);
1690 * Exception handler - write routine, called when user app writes to the device.
1691 * A per port write mutex is used to protect from another process writing to
1692 * this port at the same time. This other process could be running on the other CPU
1693 * or get control of the CPU if the copy_from_user() blocks due to a page fault (swapped out).
1694 * Spinlocks protect the info xmit members.
1696 static int rp_write(struct tty_struct *tty,
1697 const unsigned char *buf, int count)
1699 struct r_port *info = (struct r_port *) tty->driver_data;
1701 const unsigned char *b;
1703 unsigned long flags;
1705 if (count <= 0 || rocket_paranoia_check(info, "rp_write"))
1708 mutex_lock_interruptible(&info->write_mtx);
1710 #ifdef ROCKET_DEBUG_WRITE
1711 printk(KERN_INFO "rp_write %d chars...", count);
1713 cp = &info->channel;
1715 if (!tty->stopped && !tty->hw_stopped && info->xmit_fifo_room < count)
1716 info->xmit_fifo_room = TXFIFO_SIZE - sGetTxCnt(cp);
1719 * If the write queue for the port is empty, and there is FIFO space, stuff bytes
1720 * into FIFO. Use the write queue for temp storage.
1722 if (!tty->stopped && !tty->hw_stopped && info->xmit_cnt == 0 && info->xmit_fifo_room > 0) {
1723 c = min(count, info->xmit_fifo_room);
1726 /* Push data into FIFO, 2 bytes at a time */
1727 sOutStrW(sGetTxRxDataIO(cp), (unsigned short *) b, c / 2);
1729 /* If there is a byte remaining, write it */
1731 sOutB(sGetTxRxDataIO(cp), b[c - 1]);
1737 spin_lock_irqsave(&info->slock, flags);
1738 info->xmit_fifo_room -= c;
1739 spin_unlock_irqrestore(&info->slock, flags);
1742 /* If count is zero, we wrote it all and are done */
1746 /* Write remaining data into the port's xmit_buf */
1748 if (info->tty == 0) /* Seemingly obligatory check... */
1751 c = min(count, min(XMIT_BUF_SIZE - info->xmit_cnt - 1, XMIT_BUF_SIZE - info->xmit_head));
1756 memcpy(info->xmit_buf + info->xmit_head, b, c);
1758 spin_lock_irqsave(&info->slock, flags);
1760 (info->xmit_head + c) & (XMIT_BUF_SIZE - 1);
1761 info->xmit_cnt += c;
1762 spin_unlock_irqrestore(&info->slock, flags);
1769 if ((retval > 0) && !tty->stopped && !tty->hw_stopped)
1770 set_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
1773 if (info->xmit_cnt < WAKEUP_CHARS) {
1775 #ifdef ROCKETPORT_HAVE_POLL_WAIT
1776 wake_up_interruptible(&tty->poll_wait);
1779 mutex_unlock(&info->write_mtx);
1784 * Return the number of characters that can be sent. We estimate
1785 * only using the in-memory transmit buffer only, and ignore the
1786 * potential space in the transmit FIFO.
1788 static int rp_write_room(struct tty_struct *tty)
1790 struct r_port *info = (struct r_port *) tty->driver_data;
1793 if (rocket_paranoia_check(info, "rp_write_room"))
1796 ret = XMIT_BUF_SIZE - info->xmit_cnt - 1;
1799 #ifdef ROCKET_DEBUG_WRITE
1800 printk(KERN_INFO "rp_write_room returns %d...", ret);
1806 * Return the number of characters in the buffer. Again, this only
1807 * counts those characters in the in-memory transmit buffer.
1809 static int rp_chars_in_buffer(struct tty_struct *tty)
1811 struct r_port *info = (struct r_port *) tty->driver_data;
1814 if (rocket_paranoia_check(info, "rp_chars_in_buffer"))
1817 cp = &info->channel;
1819 #ifdef ROCKET_DEBUG_WRITE
1820 printk(KERN_INFO "rp_chars_in_buffer returns %d...", info->xmit_cnt);
1822 return info->xmit_cnt;
1826 * Flushes the TX fifo for a port, deletes data in the xmit_buf stored in the
1827 * r_port struct for the port. Note that spinlock are used to protect info members,
1828 * do not call this function if the spinlock is already held.
1830 static void rp_flush_buffer(struct tty_struct *tty)
1832 struct r_port *info = (struct r_port *) tty->driver_data;
1834 unsigned long flags;
1836 if (rocket_paranoia_check(info, "rp_flush_buffer"))
1839 spin_lock_irqsave(&info->slock, flags);
1840 info->xmit_cnt = info->xmit_head = info->xmit_tail = 0;
1841 spin_unlock_irqrestore(&info->slock, flags);
1843 #ifdef ROCKETPORT_HAVE_POLL_WAIT
1844 wake_up_interruptible(&tty->poll_wait);
1848 cp = &info->channel;
1854 static struct pci_device_id __devinitdata rocket_pci_ids[] = {
1855 { PCI_DEVICE(PCI_VENDOR_ID_RP, PCI_ANY_ID) },
1858 MODULE_DEVICE_TABLE(pci, rocket_pci_ids);
1861 * Called when a PCI card is found. Retrieves and stores model information,
1862 * init's aiopic and serial port hardware.
1863 * Inputs: i is the board number (0-n)
1865 static __init int register_PCI(int i, struct pci_dev *dev)
1867 int num_aiops, aiop, max_num_aiops, num_chan, chan;
1868 unsigned int aiopio[MAX_AIOPS_PER_BOARD];
1869 char *str, *board_type;
1873 int altChanRingIndicator = 0;
1874 int ports_per_aiop = 8;
1876 unsigned int class_rev;
1877 WordIO_t ConfigIO = 0;
1878 ByteIO_t UPCIRingInd = 0;
1880 if (!dev || pci_enable_device(dev))
1883 rcktpt_io_addr[i] = pci_resource_start(dev, 0);
1884 ret = pci_read_config_dword(dev, PCI_CLASS_REVISION, &class_rev);
1887 printk(KERN_INFO " Error during register_PCI(), unable to read config dword \n");
1891 rcktpt_type[i] = ROCKET_TYPE_NORMAL;
1892 rocketModel[i].loadrm2 = 0;
1893 rocketModel[i].startingPortNumber = nextLineNumber;
1895 /* Depending on the model, set up some config variables */
1896 switch (dev->device) {
1897 case PCI_DEVICE_ID_RP4QUAD:
1901 rocketModel[i].model = MODEL_RP4QUAD;
1902 strcpy(rocketModel[i].modelString, "RocketPort 4 port w/quad cable");
1903 rocketModel[i].numPorts = 4;
1905 case PCI_DEVICE_ID_RP8OCTA:
1908 rocketModel[i].model = MODEL_RP8OCTA;
1909 strcpy(rocketModel[i].modelString, "RocketPort 8 port w/octa cable");
1910 rocketModel[i].numPorts = 8;
1912 case PCI_DEVICE_ID_URP8OCTA:
1915 rocketModel[i].model = MODEL_UPCI_RP8OCTA;
1916 strcpy(rocketModel[i].modelString, "RocketPort UPCI 8 port w/octa cable");
1917 rocketModel[i].numPorts = 8;
1919 case PCI_DEVICE_ID_RP8INTF:
1922 rocketModel[i].model = MODEL_RP8INTF;
1923 strcpy(rocketModel[i].modelString, "RocketPort 8 port w/external I/F");
1924 rocketModel[i].numPorts = 8;
1926 case PCI_DEVICE_ID_URP8INTF:
1929 rocketModel[i].model = MODEL_UPCI_RP8INTF;
1930 strcpy(rocketModel[i].modelString, "RocketPort UPCI 8 port w/external I/F");
1931 rocketModel[i].numPorts = 8;
1933 case PCI_DEVICE_ID_RP8J:
1936 rocketModel[i].model = MODEL_RP8J;
1937 strcpy(rocketModel[i].modelString, "RocketPort 8 port w/RJ11 connectors");
1938 rocketModel[i].numPorts = 8;
1940 case PCI_DEVICE_ID_RP4J:
1944 rocketModel[i].model = MODEL_RP4J;
1945 strcpy(rocketModel[i].modelString, "RocketPort 4 port w/RJ45 connectors");
1946 rocketModel[i].numPorts = 4;
1948 case PCI_DEVICE_ID_RP8SNI:
1949 str = "8 (DB78 Custom)";
1951 rocketModel[i].model = MODEL_RP8SNI;
1952 strcpy(rocketModel[i].modelString, "RocketPort 8 port w/ custom DB78");
1953 rocketModel[i].numPorts = 8;
1955 case PCI_DEVICE_ID_RP16SNI:
1956 str = "16 (DB78 Custom)";
1958 rocketModel[i].model = MODEL_RP16SNI;
1959 strcpy(rocketModel[i].modelString, "RocketPort 16 port w/ custom DB78");
1960 rocketModel[i].numPorts = 16;
1962 case PCI_DEVICE_ID_RP16INTF:
1965 rocketModel[i].model = MODEL_RP16INTF;
1966 strcpy(rocketModel[i].modelString, "RocketPort 16 port w/external I/F");
1967 rocketModel[i].numPorts = 16;
1969 case PCI_DEVICE_ID_URP16INTF:
1972 rocketModel[i].model = MODEL_UPCI_RP16INTF;
1973 strcpy(rocketModel[i].modelString, "RocketPort UPCI 16 port w/external I/F");
1974 rocketModel[i].numPorts = 16;
1976 case PCI_DEVICE_ID_CRP16INTF:
1979 rocketModel[i].model = MODEL_CPCI_RP16INTF;
1980 strcpy(rocketModel[i].modelString, "RocketPort Compact PCI 16 port w/external I/F");
1981 rocketModel[i].numPorts = 16;
1983 case PCI_DEVICE_ID_RP32INTF:
1986 rocketModel[i].model = MODEL_RP32INTF;
1987 strcpy(rocketModel[i].modelString, "RocketPort 32 port w/external I/F");
1988 rocketModel[i].numPorts = 32;
1990 case PCI_DEVICE_ID_URP32INTF:
1993 rocketModel[i].model = MODEL_UPCI_RP32INTF;
1994 strcpy(rocketModel[i].modelString, "RocketPort UPCI 32 port w/external I/F");
1995 rocketModel[i].numPorts = 32;
1997 case PCI_DEVICE_ID_RPP4:
1998 str = "Plus Quadcable";
2001 altChanRingIndicator++;
2003 rocketModel[i].model = MODEL_RPP4;
2004 strcpy(rocketModel[i].modelString, "RocketPort Plus 4 port");
2005 rocketModel[i].numPorts = 4;
2007 case PCI_DEVICE_ID_RPP8:
2008 str = "Plus Octacable";
2011 altChanRingIndicator++;
2013 rocketModel[i].model = MODEL_RPP8;
2014 strcpy(rocketModel[i].modelString, "RocketPort Plus 8 port");
2015 rocketModel[i].numPorts = 8;
2017 case PCI_DEVICE_ID_RP2_232:
2018 str = "Plus 2 (RS-232)";
2021 altChanRingIndicator++;
2023 rocketModel[i].model = MODEL_RP2_232;
2024 strcpy(rocketModel[i].modelString, "RocketPort Plus 2 port RS232");
2025 rocketModel[i].numPorts = 2;
2027 case PCI_DEVICE_ID_RP2_422:
2028 str = "Plus 2 (RS-422)";
2031 altChanRingIndicator++;
2033 rocketModel[i].model = MODEL_RP2_422;
2034 strcpy(rocketModel[i].modelString, "RocketPort Plus 2 port RS422");
2035 rocketModel[i].numPorts = 2;
2037 case PCI_DEVICE_ID_RP6M:
2043 /* If class_rev is 1, the rocketmodem flash must be loaded. If it is 2 it is a "socketed" version. */
2044 if ((class_rev & 0xFF) == 1) {
2045 rcktpt_type[i] = ROCKET_TYPE_MODEMII;
2046 rocketModel[i].loadrm2 = 1;
2048 rcktpt_type[i] = ROCKET_TYPE_MODEM;
2051 rocketModel[i].model = MODEL_RP6M;
2052 strcpy(rocketModel[i].modelString, "RocketModem 6 port");
2053 rocketModel[i].numPorts = 6;
2055 case PCI_DEVICE_ID_RP4M:
2059 if ((class_rev & 0xFF) == 1) {
2060 rcktpt_type[i] = ROCKET_TYPE_MODEMII;
2061 rocketModel[i].loadrm2 = 1;
2063 rcktpt_type[i] = ROCKET_TYPE_MODEM;
2066 rocketModel[i].model = MODEL_RP4M;
2067 strcpy(rocketModel[i].modelString, "RocketModem 4 port");
2068 rocketModel[i].numPorts = 4;
2071 str = "(unknown/unsupported)";
2077 * Check for UPCI boards.
2080 switch (dev->device) {
2081 case PCI_DEVICE_ID_URP32INTF:
2082 case PCI_DEVICE_ID_URP8INTF:
2083 case PCI_DEVICE_ID_URP16INTF:
2084 case PCI_DEVICE_ID_CRP16INTF:
2085 case PCI_DEVICE_ID_URP8OCTA:
2086 rcktpt_io_addr[i] = pci_resource_start(dev, 2);
2087 ConfigIO = pci_resource_start(dev, 1);
2088 if (dev->device == PCI_DEVICE_ID_URP8OCTA) {
2089 UPCIRingInd = rcktpt_io_addr[i] + _PCI_9030_RING_IND;
2092 * Check for octa or quad cable.
2095 (sInW(ConfigIO + _PCI_9030_GPIO_CTRL) &
2096 PCI_GPIO_CTRL_8PORT)) {
2099 rocketModel[i].numPorts = 4;
2103 case PCI_DEVICE_ID_UPCI_RM3_8PORT:
2106 rocketModel[i].model = MODEL_UPCI_RM3_8PORT;
2107 strcpy(rocketModel[i].modelString, "RocketModem III 8 port");
2108 rocketModel[i].numPorts = 8;
2109 rcktpt_io_addr[i] = pci_resource_start(dev, 2);
2110 UPCIRingInd = rcktpt_io_addr[i] + _PCI_9030_RING_IND;
2111 ConfigIO = pci_resource_start(dev, 1);
2112 rcktpt_type[i] = ROCKET_TYPE_MODEMIII;
2114 case PCI_DEVICE_ID_UPCI_RM3_4PORT:
2117 rocketModel[i].model = MODEL_UPCI_RM3_4PORT;
2118 strcpy(rocketModel[i].modelString, "RocketModem III 4 port");
2119 rocketModel[i].numPorts = 4;
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;
2129 switch (rcktpt_type[i]) {
2130 case ROCKET_TYPE_MODEM:
2131 board_type = "RocketModem";
2133 case ROCKET_TYPE_MODEMII:
2134 board_type = "RocketModem II";
2136 case ROCKET_TYPE_MODEMIII:
2137 board_type = "RocketModem III";
2140 board_type = "RocketPort";
2145 sClockPrescale = 0x12; /* mod 2 (divide by 3) */
2146 rp_baud_base[i] = 921600;
2149 * If support_low_speed is set, use the slow clock
2150 * prescale, which supports 50 bps
2152 if (support_low_speed) {
2153 /* mod 9 (divide by 10) prescale */
2154 sClockPrescale = 0x19;
2155 rp_baud_base[i] = 230400;
2157 /* mod 4 (devide by 5) prescale */
2158 sClockPrescale = 0x14;
2159 rp_baud_base[i] = 460800;
2163 for (aiop = 0; aiop < max_num_aiops; aiop++)
2164 aiopio[aiop] = rcktpt_io_addr[i] + (aiop * 0x40);
2165 ctlp = sCtlNumToCtlPtr(i);
2166 num_aiops = sPCIInitController(ctlp, i, aiopio, max_num_aiops, ConfigIO, 0, FREQ_DIS, 0, altChanRingIndicator, UPCIRingInd);
2167 for (aiop = 0; aiop < max_num_aiops; aiop++)
2168 ctlp->AiopNumChan[aiop] = ports_per_aiop;
2170 printk("Comtrol PCI controller #%d ID 0x%x found in bus:slot:fn %s at address %04lx, "
2171 "%d AIOP(s) (%s)\n", i, dev->device, pci_name(dev),
2172 rcktpt_io_addr[i], num_aiops, rocketModel[i].modelString);
2173 printk(KERN_INFO "Installing %s, creating /dev/ttyR%d - %ld\n",
2174 rocketModel[i].modelString,
2175 rocketModel[i].startingPortNumber,
2176 rocketModel[i].startingPortNumber +
2177 rocketModel[i].numPorts - 1);
2179 if (num_aiops <= 0) {
2180 rcktpt_io_addr[i] = 0;
2185 /* Reset the AIOPIC, init the serial ports */
2186 for (aiop = 0; aiop < num_aiops; aiop++) {
2187 sResetAiopByNum(ctlp, aiop);
2188 num_chan = ports_per_aiop;
2189 for (chan = 0; chan < num_chan; chan++)
2190 init_r_port(i, aiop, chan, dev);
2193 /* Rocket modems must be reset */
2194 if ((rcktpt_type[i] == ROCKET_TYPE_MODEM) ||
2195 (rcktpt_type[i] == ROCKET_TYPE_MODEMII) ||
2196 (rcktpt_type[i] == ROCKET_TYPE_MODEMIII)) {
2197 num_chan = ports_per_aiop;
2198 for (chan = 0; chan < num_chan; chan++)
2199 sPCIModemReset(ctlp, chan, 1);
2201 for (chan = 0; chan < num_chan; chan++)
2202 sPCIModemReset(ctlp, chan, 0);
2204 rmSpeakerReset(ctlp, rocketModel[i].model);
2210 * Probes for PCI cards, inits them if found
2211 * Input: board_found = number of ISA boards already found, or the
2212 * starting board number
2213 * Returns: Number of PCI boards found
2215 static int __init init_PCI(int boards_found)
2217 struct pci_dev *dev = NULL;
2220 /* Work through the PCI device list, pulling out ours */
2221 while ((dev = pci_get_device(PCI_VENDOR_ID_RP, PCI_ANY_ID, dev))) {
2222 if (register_PCI(count + boards_found, dev))
2228 #endif /* CONFIG_PCI */
2231 * Probes for ISA cards
2232 * Input: i = the board number to look for
2233 * Returns: 1 if board found, 0 else
2235 static int __init init_ISA(int i)
2237 int num_aiops, num_chan = 0, total_num_chan = 0;
2239 unsigned int aiopio[MAX_AIOPS_PER_BOARD];
2243 /* If io_addr is zero, no board configured */
2244 if (rcktpt_io_addr[i] == 0)
2247 /* Reserve the IO region */
2248 if (!request_region(rcktpt_io_addr[i], 64, "Comtrol RocketPort")) {
2249 printk(KERN_INFO "Unable to reserve IO region for configured ISA RocketPort at address 0x%lx, board not installed...\n", rcktpt_io_addr[i]);
2250 rcktpt_io_addr[i] = 0;
2254 ctlp = sCtlNumToCtlPtr(i);
2256 ctlp->boardType = rcktpt_type[i];
2258 switch (rcktpt_type[i]) {
2259 case ROCKET_TYPE_PC104:
2260 type_string = "(PC104)";
2262 case ROCKET_TYPE_MODEM:
2263 type_string = "(RocketModem)";
2265 case ROCKET_TYPE_MODEMII:
2266 type_string = "(RocketModem II)";
2274 * If support_low_speed is set, use the slow clock prescale,
2275 * which supports 50 bps
2277 if (support_low_speed) {
2278 sClockPrescale = 0x19; /* mod 9 (divide by 10) prescale */
2279 rp_baud_base[i] = 230400;
2281 sClockPrescale = 0x14; /* mod 4 (devide by 5) prescale */
2282 rp_baud_base[i] = 460800;
2285 for (aiop = 0; aiop < MAX_AIOPS_PER_BOARD; aiop++)
2286 aiopio[aiop] = rcktpt_io_addr[i] + (aiop * 0x400);
2288 num_aiops = sInitController(ctlp, i, controller + (i * 0x400), aiopio, MAX_AIOPS_PER_BOARD, 0, FREQ_DIS, 0);
2290 if (ctlp->boardType == ROCKET_TYPE_PC104) {
2291 sEnAiop(ctlp, 2); /* only one AIOPIC, but these */
2292 sEnAiop(ctlp, 3); /* CSels used for other stuff */
2295 /* If something went wrong initing the AIOP's release the ISA IO memory */
2296 if (num_aiops <= 0) {
2297 release_region(rcktpt_io_addr[i], 64);
2298 rcktpt_io_addr[i] = 0;
2302 rocketModel[i].startingPortNumber = nextLineNumber;
2304 for (aiop = 0; aiop < num_aiops; aiop++) {
2305 sResetAiopByNum(ctlp, aiop);
2306 sEnAiop(ctlp, aiop);
2307 num_chan = sGetAiopNumChan(ctlp, aiop);
2308 total_num_chan += num_chan;
2309 for (chan = 0; chan < num_chan; chan++)
2310 init_r_port(i, aiop, chan, NULL);
2313 if ((rcktpt_type[i] == ROCKET_TYPE_MODEM) || (rcktpt_type[i] == ROCKET_TYPE_MODEMII)) {
2314 num_chan = sGetAiopNumChan(ctlp, 0);
2315 total_num_chan = num_chan;
2316 for (chan = 0; chan < num_chan; chan++)
2317 sModemReset(ctlp, chan, 1);
2319 for (chan = 0; chan < num_chan; chan++)
2320 sModemReset(ctlp, chan, 0);
2322 strcpy(rocketModel[i].modelString, "RocketModem ISA");
2324 strcpy(rocketModel[i].modelString, "RocketPort ISA");
2326 rocketModel[i].numPorts = total_num_chan;
2327 rocketModel[i].model = MODEL_ISA;
2329 printk(KERN_INFO "RocketPort ISA card #%d found at 0x%lx - %d AIOPs %s\n",
2330 i, rcktpt_io_addr[i], num_aiops, type_string);
2332 printk(KERN_INFO "Installing %s, creating /dev/ttyR%d - %ld\n",
2333 rocketModel[i].modelString,
2334 rocketModel[i].startingPortNumber,
2335 rocketModel[i].startingPortNumber +
2336 rocketModel[i].numPorts - 1);
2341 static const struct tty_operations rocket_ops = {
2345 .put_char = rp_put_char,
2346 .write_room = rp_write_room,
2347 .chars_in_buffer = rp_chars_in_buffer,
2348 .flush_buffer = rp_flush_buffer,
2350 .throttle = rp_throttle,
2351 .unthrottle = rp_unthrottle,
2352 .set_termios = rp_set_termios,
2355 .hangup = rp_hangup,
2356 .break_ctl = rp_break,
2357 .send_xchar = rp_send_xchar,
2358 .wait_until_sent = rp_wait_until_sent,
2359 .tiocmget = rp_tiocmget,
2360 .tiocmset = rp_tiocmset,
2364 * The module "startup" routine; it's run when the module is loaded.
2366 static int __init rp_init(void)
2368 int retval, pci_boards_found, isa_boards_found, i;
2370 printk(KERN_INFO "RocketPort device driver module, version %s, %s\n",
2371 ROCKET_VERSION, ROCKET_DATE);
2373 rocket_driver = alloc_tty_driver(MAX_RP_PORTS);
2378 * Initialize the array of pointers to our own internal state
2381 memset(rp_table, 0, sizeof (rp_table));
2382 memset(xmit_flags, 0, sizeof (xmit_flags));
2384 for (i = 0; i < MAX_RP_PORTS; i++)
2387 memset(rocketModel, 0, sizeof (rocketModel));
2390 * If board 1 is non-zero, there is at least one ISA configured. If controller is
2391 * zero, use the default controller IO address of board1 + 0x40.
2394 if (controller == 0)
2395 controller = board1 + 0x40;
2397 controller = 0; /* Used as a flag, meaning no ISA boards */
2400 /* If an ISA card is configured, reserve the 4 byte IO space for the Mudbac controller */
2401 if (controller && (!request_region(controller, 4, "Comtrol RocketPort"))) {
2402 printk(KERN_INFO "Unable to reserve IO region for first configured ISA RocketPort controller 0x%lx. Driver exiting \n", controller);
2406 /* Store ISA variable retrieved from command line or .conf file. */
2407 rcktpt_io_addr[0] = board1;
2408 rcktpt_io_addr[1] = board2;
2409 rcktpt_io_addr[2] = board3;
2410 rcktpt_io_addr[3] = board4;
2412 rcktpt_type[0] = modem1 ? ROCKET_TYPE_MODEM : ROCKET_TYPE_NORMAL;
2413 rcktpt_type[0] = pc104_1[0] ? ROCKET_TYPE_PC104 : rcktpt_type[0];
2414 rcktpt_type[1] = modem2 ? ROCKET_TYPE_MODEM : ROCKET_TYPE_NORMAL;
2415 rcktpt_type[1] = pc104_2[0] ? ROCKET_TYPE_PC104 : rcktpt_type[1];
2416 rcktpt_type[2] = modem3 ? ROCKET_TYPE_MODEM : ROCKET_TYPE_NORMAL;
2417 rcktpt_type[2] = pc104_3[0] ? ROCKET_TYPE_PC104 : rcktpt_type[2];
2418 rcktpt_type[3] = modem4 ? ROCKET_TYPE_MODEM : ROCKET_TYPE_NORMAL;
2419 rcktpt_type[3] = pc104_4[0] ? ROCKET_TYPE_PC104 : rcktpt_type[3];
2422 * Set up the tty driver structure and then register this
2423 * driver with the tty layer.
2426 rocket_driver->owner = THIS_MODULE;
2427 rocket_driver->flags = TTY_DRIVER_DYNAMIC_DEV;
2428 rocket_driver->name = "ttyR";
2429 rocket_driver->driver_name = "Comtrol RocketPort";
2430 rocket_driver->major = TTY_ROCKET_MAJOR;
2431 rocket_driver->minor_start = 0;
2432 rocket_driver->type = TTY_DRIVER_TYPE_SERIAL;
2433 rocket_driver->subtype = SERIAL_TYPE_NORMAL;
2434 rocket_driver->init_termios = tty_std_termios;
2435 rocket_driver->init_termios.c_cflag =
2436 B9600 | CS8 | CREAD | HUPCL | CLOCAL;
2437 rocket_driver->init_termios.c_ispeed = 9600;
2438 rocket_driver->init_termios.c_ospeed = 9600;
2439 #ifdef ROCKET_SOFT_FLOW
2440 rocket_driver->flags |= TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV;
2442 tty_set_operations(rocket_driver, &rocket_ops);
2444 retval = tty_register_driver(rocket_driver);
2446 printk(KERN_INFO "Couldn't install tty RocketPort driver (error %d)\n", -retval);
2447 put_tty_driver(rocket_driver);
2451 #ifdef ROCKET_DEBUG_OPEN
2452 printk(KERN_INFO "RocketPort driver is major %d\n", rocket_driver.major);
2456 * OK, let's probe each of the controllers looking for boards. Any boards found
2457 * will be initialized here.
2459 isa_boards_found = 0;
2460 pci_boards_found = 0;
2462 for (i = 0; i < NUM_BOARDS; i++) {
2468 if (isa_boards_found < NUM_BOARDS)
2469 pci_boards_found = init_PCI(isa_boards_found);
2472 max_board = pci_boards_found + isa_boards_found;
2474 if (max_board == 0) {
2475 printk(KERN_INFO "No rocketport ports found; unloading driver.\n");
2476 del_timer_sync(&rocket_timer);
2477 tty_unregister_driver(rocket_driver);
2478 put_tty_driver(rocket_driver);
2486 static void rp_cleanup_module(void)
2491 del_timer_sync(&rocket_timer);
2493 retval = tty_unregister_driver(rocket_driver);
2495 printk(KERN_INFO "Error %d while trying to unregister "
2496 "rocketport driver\n", -retval);
2497 put_tty_driver(rocket_driver);
2499 for (i = 0; i < MAX_RP_PORTS; i++)
2502 for (i = 0; i < NUM_BOARDS; i++) {
2503 if (rcktpt_io_addr[i] <= 0 || is_PCI[i])
2505 release_region(rcktpt_io_addr[i], 64);
2508 release_region(controller, 4);
2511 /***************************************************************************
2512 Function: sInitController
2513 Purpose: Initialization of controller global registers and controller
2515 Call: sInitController(CtlP,CtlNum,MudbacIO,AiopIOList,AiopIOListSize,
2516 IRQNum,Frequency,PeriodicOnly)
2517 CONTROLLER_T *CtlP; Ptr to controller structure
2518 int CtlNum; Controller number
2519 ByteIO_t MudbacIO; Mudbac base I/O address.
2520 ByteIO_t *AiopIOList; List of I/O addresses for each AIOP.
2521 This list must be in the order the AIOPs will be found on the
2522 controller. Once an AIOP in the list is not found, it is
2523 assumed that there are no more AIOPs on the controller.
2524 int AiopIOListSize; Number of addresses in AiopIOList
2525 int IRQNum; Interrupt Request number. Can be any of the following:
2526 0: Disable global interrupts
2535 Byte_t Frequency: A flag identifying the frequency
2536 of the periodic interrupt, can be any one of the following:
2537 FREQ_DIS - periodic interrupt disabled
2538 FREQ_137HZ - 137 Hertz
2539 FREQ_69HZ - 69 Hertz
2540 FREQ_34HZ - 34 Hertz
2541 FREQ_17HZ - 17 Hertz
2544 If IRQNum is set to 0 the Frequency parameter is
2545 overidden, it is forced to a value of FREQ_DIS.
2546 int PeriodicOnly: 1 if all interrupts except the periodic
2547 interrupt are to be blocked.
2548 0 is both the periodic interrupt and
2549 other channel interrupts are allowed.
2550 If IRQNum is set to 0 the PeriodicOnly parameter is
2551 overidden, it is forced to a value of 0.
2552 Return: int: Number of AIOPs on the controller, or CTLID_NULL if controller
2553 initialization failed.
2556 If periodic interrupts are to be disabled but AIOP interrupts
2557 are allowed, set Frequency to FREQ_DIS and PeriodicOnly to 0.
2559 If interrupts are to be completely disabled set IRQNum to 0.
2561 Setting Frequency to FREQ_DIS and PeriodicOnly to 1 is an
2562 invalid combination.
2564 This function performs initialization of global interrupt modes,
2565 but it does not actually enable global interrupts. To enable
2566 and disable global interrupts use functions sEnGlobalInt() and
2567 sDisGlobalInt(). Enabling of global interrupts is normally not
2568 done until all other initializations are complete.
2570 Even if interrupts are globally enabled, they must also be
2571 individually enabled for each channel that is to generate
2574 Warnings: No range checking on any of the parameters is done.
2576 No context switches are allowed while executing this function.
2578 After this function all AIOPs on the controller are disabled,
2579 they can be enabled with sEnAiop().
2581 static int sInitController(CONTROLLER_T * CtlP, int CtlNum, ByteIO_t MudbacIO,
2582 ByteIO_t * AiopIOList, int AiopIOListSize,
2583 int IRQNum, Byte_t Frequency, int PeriodicOnly)
2589 CtlP->AiopIntrBits = aiop_intr_bits;
2590 CtlP->AltChanRingIndicator = 0;
2591 CtlP->CtlNum = CtlNum;
2592 CtlP->CtlID = CTLID_0001; /* controller release 1 */
2593 CtlP->BusType = isISA;
2594 CtlP->MBaseIO = MudbacIO;
2595 CtlP->MReg1IO = MudbacIO + 1;
2596 CtlP->MReg2IO = MudbacIO + 2;
2597 CtlP->MReg3IO = MudbacIO + 3;
2599 CtlP->MReg2 = 0; /* interrupt disable */
2600 CtlP->MReg3 = 0; /* no periodic interrupts */
2602 if (sIRQMap[IRQNum] == 0) { /* interrupts globally disabled */
2603 CtlP->MReg2 = 0; /* interrupt disable */
2604 CtlP->MReg3 = 0; /* no periodic interrupts */
2606 CtlP->MReg2 = sIRQMap[IRQNum]; /* set IRQ number */
2607 CtlP->MReg3 = Frequency; /* set frequency */
2608 if (PeriodicOnly) { /* periodic interrupt only */
2609 CtlP->MReg3 |= PERIODIC_ONLY;
2613 sOutB(CtlP->MReg2IO, CtlP->MReg2);
2614 sOutB(CtlP->MReg3IO, CtlP->MReg3);
2615 sControllerEOI(CtlP); /* clear EOI if warm init */
2618 for (i = done = 0; i < AiopIOListSize; i++) {
2620 CtlP->AiopIO[i] = (WordIO_t) io;
2621 CtlP->AiopIntChanIO[i] = io + _INT_CHAN;
2622 sOutB(CtlP->MReg2IO, CtlP->MReg2 | (i & 0x03)); /* AIOP index */
2623 sOutB(MudbacIO, (Byte_t) (io >> 6)); /* set up AIOP I/O in MUDBAC */
2626 sEnAiop(CtlP, i); /* enable the AIOP */
2627 CtlP->AiopID[i] = sReadAiopID(io); /* read AIOP ID */
2628 if (CtlP->AiopID[i] == AIOPID_NULL) /* if AIOP does not exist */
2629 done = 1; /* done looking for AIOPs */
2631 CtlP->AiopNumChan[i] = sReadAiopNumChan((WordIO_t) io); /* num channels in AIOP */
2632 sOutW((WordIO_t) io + _INDX_ADDR, _CLK_PRE); /* clock prescaler */
2633 sOutB(io + _INDX_DATA, sClockPrescale);
2634 CtlP->NumAiop++; /* bump count of AIOPs */
2636 sDisAiop(CtlP, i); /* disable AIOP */
2639 if (CtlP->NumAiop == 0)
2642 return (CtlP->NumAiop);
2645 /***************************************************************************
2646 Function: sPCIInitController
2647 Purpose: Initialization of controller global registers and controller
2649 Call: sPCIInitController(CtlP,CtlNum,AiopIOList,AiopIOListSize,
2650 IRQNum,Frequency,PeriodicOnly)
2651 CONTROLLER_T *CtlP; Ptr to controller structure
2652 int CtlNum; Controller number
2653 ByteIO_t *AiopIOList; List of I/O addresses for each AIOP.
2654 This list must be in the order the AIOPs will be found on the
2655 controller. Once an AIOP in the list is not found, it is
2656 assumed that there are no more AIOPs on the controller.
2657 int AiopIOListSize; Number of addresses in AiopIOList
2658 int IRQNum; Interrupt Request number. Can be any of the following:
2659 0: Disable global interrupts
2668 Byte_t Frequency: A flag identifying the frequency
2669 of the periodic interrupt, can be any one of the following:
2670 FREQ_DIS - periodic interrupt disabled
2671 FREQ_137HZ - 137 Hertz
2672 FREQ_69HZ - 69 Hertz
2673 FREQ_34HZ - 34 Hertz
2674 FREQ_17HZ - 17 Hertz
2677 If IRQNum is set to 0 the Frequency parameter is
2678 overidden, it is forced to a value of FREQ_DIS.
2679 int PeriodicOnly: 1 if all interrupts except the periodic
2680 interrupt are to be blocked.
2681 0 is both the periodic interrupt and
2682 other channel interrupts are allowed.
2683 If IRQNum is set to 0 the PeriodicOnly parameter is
2684 overidden, it is forced to a value of 0.
2685 Return: int: Number of AIOPs on the controller, or CTLID_NULL if controller
2686 initialization failed.
2689 If periodic interrupts are to be disabled but AIOP interrupts
2690 are allowed, set Frequency to FREQ_DIS and PeriodicOnly to 0.
2692 If interrupts are to be completely disabled set IRQNum to 0.
2694 Setting Frequency to FREQ_DIS and PeriodicOnly to 1 is an
2695 invalid combination.
2697 This function performs initialization of global interrupt modes,
2698 but it does not actually enable global interrupts. To enable
2699 and disable global interrupts use functions sEnGlobalInt() and
2700 sDisGlobalInt(). Enabling of global interrupts is normally not
2701 done until all other initializations are complete.
2703 Even if interrupts are globally enabled, they must also be
2704 individually enabled for each channel that is to generate
2707 Warnings: No range checking on any of the parameters is done.
2709 No context switches are allowed while executing this function.
2711 After this function all AIOPs on the controller are disabled,
2712 they can be enabled with sEnAiop().
2714 static int sPCIInitController(CONTROLLER_T * CtlP, int CtlNum,
2715 ByteIO_t * AiopIOList, int AiopIOListSize,
2716 WordIO_t ConfigIO, int IRQNum, Byte_t Frequency,
2717 int PeriodicOnly, int altChanRingIndicator,
2723 CtlP->AltChanRingIndicator = altChanRingIndicator;
2724 CtlP->UPCIRingInd = UPCIRingInd;
2725 CtlP->CtlNum = CtlNum;
2726 CtlP->CtlID = CTLID_0001; /* controller release 1 */
2727 CtlP->BusType = isPCI; /* controller release 1 */
2731 CtlP->PCIIO = ConfigIO + _PCI_9030_INT_CTRL;
2732 CtlP->PCIIO2 = ConfigIO + _PCI_9030_GPIO_CTRL;
2733 CtlP->AiopIntrBits = upci_aiop_intr_bits;
2737 (WordIO_t) ((ByteIO_t) AiopIOList[0] + _PCI_INT_FUNC);
2738 CtlP->AiopIntrBits = aiop_intr_bits;
2741 sPCIControllerEOI(CtlP); /* clear EOI if warm init */
2744 for (i = 0; i < AiopIOListSize; i++) {
2746 CtlP->AiopIO[i] = (WordIO_t) io;
2747 CtlP->AiopIntChanIO[i] = io + _INT_CHAN;
2749 CtlP->AiopID[i] = sReadAiopID(io); /* read AIOP ID */
2750 if (CtlP->AiopID[i] == AIOPID_NULL) /* if AIOP does not exist */
2751 break; /* done looking for AIOPs */
2753 CtlP->AiopNumChan[i] = sReadAiopNumChan((WordIO_t) io); /* num channels in AIOP */
2754 sOutW((WordIO_t) io + _INDX_ADDR, _CLK_PRE); /* clock prescaler */
2755 sOutB(io + _INDX_DATA, sClockPrescale);
2756 CtlP->NumAiop++; /* bump count of AIOPs */
2759 if (CtlP->NumAiop == 0)
2762 return (CtlP->NumAiop);
2765 /***************************************************************************
2766 Function: sReadAiopID
2767 Purpose: Read the AIOP idenfication number directly from an AIOP.
2768 Call: sReadAiopID(io)
2769 ByteIO_t io: AIOP base I/O address
2770 Return: int: Flag AIOPID_XXXX if a valid AIOP is found, where X
2771 is replace by an identifying number.
2772 Flag AIOPID_NULL if no valid AIOP is found
2773 Warnings: No context switches are allowed while executing this function.
2776 static int sReadAiopID(ByteIO_t io)
2778 Byte_t AiopID; /* ID byte from AIOP */
2780 sOutB(io + _CMD_REG, RESET_ALL); /* reset AIOP */
2781 sOutB(io + _CMD_REG, 0x0);
2782 AiopID = sInW(io + _CHN_STAT0) & 0x07;
2785 else /* AIOP does not exist */
2789 /***************************************************************************
2790 Function: sReadAiopNumChan
2791 Purpose: Read the number of channels available in an AIOP directly from
2793 Call: sReadAiopNumChan(io)
2794 WordIO_t io: AIOP base I/O address
2795 Return: int: The number of channels available
2796 Comments: The number of channels is determined by write/reads from identical
2797 offsets within the SRAM address spaces for channels 0 and 4.
2798 If the channel 4 space is mirrored to channel 0 it is a 4 channel
2799 AIOP, otherwise it is an 8 channel.
2800 Warnings: No context switches are allowed while executing this function.
2802 static int sReadAiopNumChan(WordIO_t io)
2805 static Byte_t R[4] = { 0x00, 0x00, 0x34, 0x12 };
2807 /* write to chan 0 SRAM */
2808 sOutDW((DWordIO_t) io + _INDX_ADDR, *((DWord_t *) & R[0]));
2809 sOutW(io + _INDX_ADDR, 0); /* read from SRAM, chan 0 */
2810 x = sInW(io + _INDX_DATA);
2811 sOutW(io + _INDX_ADDR, 0x4000); /* read from SRAM, chan 4 */
2812 if (x != sInW(io + _INDX_DATA)) /* if different must be 8 chan */
2818 /***************************************************************************
2820 Purpose: Initialization of a channel and channel structure
2821 Call: sInitChan(CtlP,ChP,AiopNum,ChanNum)
2822 CONTROLLER_T *CtlP; Ptr to controller structure
2823 CHANNEL_T *ChP; Ptr to channel structure
2824 int AiopNum; AIOP number within controller
2825 int ChanNum; Channel number within AIOP
2826 Return: int: 1 if initialization succeeded, 0 if it fails because channel
2827 number exceeds number of channels available in AIOP.
2828 Comments: This function must be called before a channel can be used.
2829 Warnings: No range checking on any of the parameters is done.
2831 No context switches are allowed while executing this function.
2833 static int sInitChan(CONTROLLER_T * CtlP, CHANNEL_T * ChP, int AiopNum,
2844 if (ChanNum >= CtlP->AiopNumChan[AiopNum])
2845 return 0; /* exceeds num chans in AIOP */
2847 /* Channel, AIOP, and controller identifiers */
2849 ChP->ChanID = CtlP->AiopID[AiopNum];
2850 ChP->AiopNum = AiopNum;
2851 ChP->ChanNum = ChanNum;
2853 /* Global direct addresses */
2854 AiopIO = CtlP->AiopIO[AiopNum];
2855 ChP->Cmd = (ByteIO_t) AiopIO + _CMD_REG;
2856 ChP->IntChan = (ByteIO_t) AiopIO + _INT_CHAN;
2857 ChP->IntMask = (ByteIO_t) AiopIO + _INT_MASK;
2858 ChP->IndexAddr = (DWordIO_t) AiopIO + _INDX_ADDR;
2859 ChP->IndexData = AiopIO + _INDX_DATA;
2861 /* Channel direct addresses */
2862 ChIOOff = AiopIO + ChP->ChanNum * 2;
2863 ChP->TxRxData = ChIOOff + _TD0;
2864 ChP->ChanStat = ChIOOff + _CHN_STAT0;
2865 ChP->TxRxCount = ChIOOff + _FIFO_CNT0;
2866 ChP->IntID = (ByteIO_t) AiopIO + ChP->ChanNum + _INT_ID0;
2868 /* Initialize the channel from the RData array */
2869 for (i = 0; i < RDATASIZE; i += 4) {
2871 R[1] = RData[i + 1] + 0x10 * ChanNum;
2872 R[2] = RData[i + 2];
2873 R[3] = RData[i + 3];
2874 sOutDW(ChP->IndexAddr, *((DWord_t *) & R[0]));
2878 for (i = 0; i < RREGDATASIZE; i += 4) {
2879 ChR[i] = RRegData[i];
2880 ChR[i + 1] = RRegData[i + 1] + 0x10 * ChanNum;
2881 ChR[i + 2] = RRegData[i + 2];
2882 ChR[i + 3] = RRegData[i + 3];
2885 /* Indexed registers */
2886 ChOff = (Word_t) ChanNum *0x1000;
2888 if (sClockPrescale == 0x14)
2893 ChP->BaudDiv[0] = (Byte_t) (ChOff + _BAUD);
2894 ChP->BaudDiv[1] = (Byte_t) ((ChOff + _BAUD) >> 8);
2895 ChP->BaudDiv[2] = (Byte_t) brd9600;
2896 ChP->BaudDiv[3] = (Byte_t) (brd9600 >> 8);
2897 sOutDW(ChP->IndexAddr, *(DWord_t *) & ChP->BaudDiv[0]);
2899 ChP->TxControl[0] = (Byte_t) (ChOff + _TX_CTRL);
2900 ChP->TxControl[1] = (Byte_t) ((ChOff + _TX_CTRL) >> 8);
2901 ChP->TxControl[2] = 0;
2902 ChP->TxControl[3] = 0;
2903 sOutDW(ChP->IndexAddr, *(DWord_t *) & ChP->TxControl[0]);
2905 ChP->RxControl[0] = (Byte_t) (ChOff + _RX_CTRL);
2906 ChP->RxControl[1] = (Byte_t) ((ChOff + _RX_CTRL) >> 8);
2907 ChP->RxControl[2] = 0;
2908 ChP->RxControl[3] = 0;
2909 sOutDW(ChP->IndexAddr, *(DWord_t *) & ChP->RxControl[0]);
2911 ChP->TxEnables[0] = (Byte_t) (ChOff + _TX_ENBLS);
2912 ChP->TxEnables[1] = (Byte_t) ((ChOff + _TX_ENBLS) >> 8);
2913 ChP->TxEnables[2] = 0;
2914 ChP->TxEnables[3] = 0;
2915 sOutDW(ChP->IndexAddr, *(DWord_t *) & ChP->TxEnables[0]);
2917 ChP->TxCompare[0] = (Byte_t) (ChOff + _TXCMP1);
2918 ChP->TxCompare[1] = (Byte_t) ((ChOff + _TXCMP1) >> 8);
2919 ChP->TxCompare[2] = 0;
2920 ChP->TxCompare[3] = 0;
2921 sOutDW(ChP->IndexAddr, *(DWord_t *) & ChP->TxCompare[0]);
2923 ChP->TxReplace1[0] = (Byte_t) (ChOff + _TXREP1B1);
2924 ChP->TxReplace1[1] = (Byte_t) ((ChOff + _TXREP1B1) >> 8);
2925 ChP->TxReplace1[2] = 0;
2926 ChP->TxReplace1[3] = 0;
2927 sOutDW(ChP->IndexAddr, *(DWord_t *) & ChP->TxReplace1[0]);
2929 ChP->TxReplace2[0] = (Byte_t) (ChOff + _TXREP2);
2930 ChP->TxReplace2[1] = (Byte_t) ((ChOff + _TXREP2) >> 8);
2931 ChP->TxReplace2[2] = 0;
2932 ChP->TxReplace2[3] = 0;
2933 sOutDW(ChP->IndexAddr, *(DWord_t *) & ChP->TxReplace2[0]);
2935 ChP->TxFIFOPtrs = ChOff + _TXF_OUTP;
2936 ChP->TxFIFO = ChOff + _TX_FIFO;
2938 sOutB(ChP->Cmd, (Byte_t) ChanNum | RESTXFCNT); /* apply reset Tx FIFO count */
2939 sOutB(ChP->Cmd, (Byte_t) ChanNum); /* remove reset Tx FIFO count */
2940 sOutW((WordIO_t) ChP->IndexAddr, ChP->TxFIFOPtrs); /* clear Tx in/out ptrs */
2941 sOutW(ChP->IndexData, 0);
2942 ChP->RxFIFOPtrs = ChOff + _RXF_OUTP;
2943 ChP->RxFIFO = ChOff + _RX_FIFO;
2945 sOutB(ChP->Cmd, (Byte_t) ChanNum | RESRXFCNT); /* apply reset Rx FIFO count */
2946 sOutB(ChP->Cmd, (Byte_t) ChanNum); /* remove reset Rx FIFO count */
2947 sOutW((WordIO_t) ChP->IndexAddr, ChP->RxFIFOPtrs); /* clear Rx out ptr */
2948 sOutW(ChP->IndexData, 0);
2949 sOutW((WordIO_t) ChP->IndexAddr, ChP->RxFIFOPtrs + 2); /* clear Rx in ptr */
2950 sOutW(ChP->IndexData, 0);
2951 ChP->TxPrioCnt = ChOff + _TXP_CNT;
2952 sOutW((WordIO_t) ChP->IndexAddr, ChP->TxPrioCnt);
2953 sOutB(ChP->IndexData, 0);
2954 ChP->TxPrioPtr = ChOff + _TXP_PNTR;
2955 sOutW((WordIO_t) ChP->IndexAddr, ChP->TxPrioPtr);
2956 sOutB(ChP->IndexData, 0);
2957 ChP->TxPrioBuf = ChOff + _TXP_BUF;
2958 sEnRxProcessor(ChP); /* start the Rx processor */
2963 /***************************************************************************
2964 Function: sStopRxProcessor
2965 Purpose: Stop the receive processor from processing a channel.
2966 Call: sStopRxProcessor(ChP)
2967 CHANNEL_T *ChP; Ptr to channel structure
2969 Comments: The receive processor can be started again with sStartRxProcessor().
2970 This function causes the receive processor to skip over the
2971 stopped channel. It does not stop it from processing other channels.
2973 Warnings: No context switches are allowed while executing this function.
2975 Do not leave the receive processor stopped for more than one
2978 After calling this function a delay of 4 uS is required to ensure
2979 that the receive processor is no longer processing this channel.
2981 static void sStopRxProcessor(CHANNEL_T * ChP)
2989 sOutDW(ChP->IndexAddr, *(DWord_t *) & R[0]);
2992 /***************************************************************************
2993 Function: sFlushRxFIFO
2994 Purpose: Flush the Rx FIFO
2995 Call: sFlushRxFIFO(ChP)
2996 CHANNEL_T *ChP; Ptr to channel structure
2998 Comments: To prevent data from being enqueued or dequeued in the Tx FIFO
2999 while it is being flushed the receive processor is stopped
3000 and the transmitter is disabled. After these operations a
3001 4 uS delay is done before clearing the pointers to allow
3002 the receive processor to stop. These items are handled inside
3004 Warnings: No context switches are allowed while executing this function.
3006 static void sFlushRxFIFO(CHANNEL_T * ChP)
3009 Byte_t Ch; /* channel number within AIOP */
3010 int RxFIFOEnabled; /* 1 if Rx FIFO enabled */
3012 if (sGetRxCnt(ChP) == 0) /* Rx FIFO empty */
3013 return; /* don't need to flush */
3016 if (ChP->R[0x32] == 0x08) { /* Rx FIFO is enabled */
3018 sDisRxFIFO(ChP); /* disable it */
3019 for (i = 0; i < 2000 / 200; i++) /* delay 2 uS to allow proc to disable FIFO */
3020 sInB(ChP->IntChan); /* depends on bus i/o timing */
3022 sGetChanStatus(ChP); /* clear any pending Rx errors in chan stat */
3023 Ch = (Byte_t) sGetChanNum(ChP);
3024 sOutB(ChP->Cmd, Ch | RESRXFCNT); /* apply reset Rx FIFO count */
3025 sOutB(ChP->Cmd, Ch); /* remove reset Rx FIFO count */
3026 sOutW((WordIO_t) ChP->IndexAddr, ChP->RxFIFOPtrs); /* clear Rx out ptr */
3027 sOutW(ChP->IndexData, 0);
3028 sOutW((WordIO_t) ChP->IndexAddr, ChP->RxFIFOPtrs + 2); /* clear Rx in ptr */
3029 sOutW(ChP->IndexData, 0);
3031 sEnRxFIFO(ChP); /* enable Rx FIFO */
3034 /***************************************************************************
3035 Function: sFlushTxFIFO
3036 Purpose: Flush the Tx FIFO
3037 Call: sFlushTxFIFO(ChP)
3038 CHANNEL_T *ChP; Ptr to channel structure
3040 Comments: To prevent data from being enqueued or dequeued in the Tx FIFO
3041 while it is being flushed the receive processor is stopped
3042 and the transmitter is disabled. After these operations a
3043 4 uS delay is done before clearing the pointers to allow
3044 the receive processor to stop. These items are handled inside
3046 Warnings: No context switches are allowed while executing this function.
3048 static void sFlushTxFIFO(CHANNEL_T * ChP)
3051 Byte_t Ch; /* channel number within AIOP */
3052 int TxEnabled; /* 1 if transmitter enabled */
3054 if (sGetTxCnt(ChP) == 0) /* Tx FIFO empty */
3055 return; /* don't need to flush */
3058 if (ChP->TxControl[3] & TX_ENABLE) {
3060 sDisTransmit(ChP); /* disable transmitter */
3062 sStopRxProcessor(ChP); /* stop Rx processor */
3063 for (i = 0; i < 4000 / 200; i++) /* delay 4 uS to allow proc to stop */
3064 sInB(ChP->IntChan); /* depends on bus i/o timing */
3065 Ch = (Byte_t) sGetChanNum(ChP);
3066 sOutB(ChP->Cmd, Ch | RESTXFCNT); /* apply reset Tx FIFO count */
3067 sOutB(ChP->Cmd, Ch); /* remove reset Tx FIFO count */
3068 sOutW((WordIO_t) ChP->IndexAddr, ChP->TxFIFOPtrs); /* clear Tx in/out ptrs */
3069 sOutW(ChP->IndexData, 0);
3071 sEnTransmit(ChP); /* enable transmitter */
3072 sStartRxProcessor(ChP); /* restart Rx processor */
3075 /***************************************************************************
3076 Function: sWriteTxPrioByte
3077 Purpose: Write a byte of priority transmit data to a channel
3078 Call: sWriteTxPrioByte(ChP,Data)
3079 CHANNEL_T *ChP; Ptr to channel structure
3080 Byte_t Data; The transmit data byte
3082 Return: int: 1 if the bytes is successfully written, otherwise 0.
3084 Comments: The priority byte is transmitted before any data in the Tx FIFO.
3086 Warnings: No context switches are allowed while executing this function.
3088 static int sWriteTxPrioByte(CHANNEL_T * ChP, Byte_t Data)
3090 Byte_t DWBuf[4]; /* buffer for double word writes */
3091 Word_t *WordPtr; /* must be far because Win SS != DS */
3092 register DWordIO_t IndexAddr;
3094 if (sGetTxCnt(ChP) > 1) { /* write it to Tx priority buffer */
3095 IndexAddr = ChP->IndexAddr;
3096 sOutW((WordIO_t) IndexAddr, ChP->TxPrioCnt); /* get priority buffer status */
3097 if (sInB((ByteIO_t) ChP->IndexData) & PRI_PEND) /* priority buffer busy */
3098 return (0); /* nothing sent */
3100 WordPtr = (Word_t *) (&DWBuf[0]);
3101 *WordPtr = ChP->TxPrioBuf; /* data byte address */
3103 DWBuf[2] = Data; /* data byte value */
3104 sOutDW(IndexAddr, *((DWord_t *) (&DWBuf[0]))); /* write it out */
3106 *WordPtr = ChP->TxPrioCnt; /* Tx priority count address */
3108 DWBuf[2] = PRI_PEND + 1; /* indicate 1 byte pending */
3109 DWBuf[3] = 0; /* priority buffer pointer */
3110 sOutDW(IndexAddr, *((DWord_t *) (&DWBuf[0]))); /* write it out */
3111 } else { /* write it to Tx FIFO */
3113 sWriteTxByte(sGetTxRxDataIO(ChP), Data);
3115 return (1); /* 1 byte sent */
3118 /***************************************************************************
3119 Function: sEnInterrupts
3120 Purpose: Enable one or more interrupts for a channel
3121 Call: sEnInterrupts(ChP,Flags)
3122 CHANNEL_T *ChP; Ptr to channel structure
3123 Word_t Flags: Interrupt enable flags, can be any combination
3124 of the following flags:
3125 TXINT_EN: Interrupt on Tx FIFO empty
3126 RXINT_EN: Interrupt on Rx FIFO at trigger level (see
3128 SRCINT_EN: Interrupt on SRC (Special Rx Condition)
3129 MCINT_EN: Interrupt on modem input change
3130 CHANINT_EN: Allow channel interrupt signal to the AIOP's
3131 Interrupt Channel Register.
3133 Comments: If an interrupt enable flag is set in Flags, that interrupt will be
3134 enabled. If an interrupt enable flag is not set in Flags, that
3135 interrupt will not be changed. Interrupts can be disabled with
3136 function sDisInterrupts().
3138 This function sets the appropriate bit for the channel in the AIOP's
3139 Interrupt Mask Register if the CHANINT_EN flag is set. This allows
3140 this channel's bit to be set in the AIOP's Interrupt Channel Register.
3142 Interrupts must also be globally enabled before channel interrupts
3143 will be passed on to the host. This is done with function
3146 In some cases it may be desirable to disable interrupts globally but
3147 enable channel interrupts. This would allow the global interrupt
3148 status register to be used to determine which AIOPs need service.
3150 static void sEnInterrupts(CHANNEL_T * ChP, Word_t Flags)
3152 Byte_t Mask; /* Interrupt Mask Register */
3154 ChP->RxControl[2] |=
3155 ((Byte_t) Flags & (RXINT_EN | SRCINT_EN | MCINT_EN));
3157 sOutDW(ChP->IndexAddr, *(DWord_t *) & ChP->RxControl[0]);
3159 ChP->TxControl[2] |= ((Byte_t) Flags & TXINT_EN);
3161 sOutDW(ChP->IndexAddr, *(DWord_t *) & ChP->TxControl[0]);
3163 if (Flags & CHANINT_EN) {
3164 Mask = sInB(ChP->IntMask) | sBitMapSetTbl[ChP->ChanNum];
3165 sOutB(ChP->IntMask, Mask);
3169 /***************************************************************************
3170 Function: sDisInterrupts
3171 Purpose: Disable one or more interrupts for a channel
3172 Call: sDisInterrupts(ChP,Flags)
3173 CHANNEL_T *ChP; Ptr to channel structure
3174 Word_t Flags: Interrupt flags, can be any combination
3175 of the following flags:
3176 TXINT_EN: Interrupt on Tx FIFO empty
3177 RXINT_EN: Interrupt on Rx FIFO at trigger level (see
3179 SRCINT_EN: Interrupt on SRC (Special Rx Condition)
3180 MCINT_EN: Interrupt on modem input change
3181 CHANINT_EN: Disable channel interrupt signal to the
3182 AIOP's Interrupt Channel Register.
3184 Comments: If an interrupt flag is set in Flags, that interrupt will be
3185 disabled. If an interrupt flag is not set in Flags, that
3186 interrupt will not be changed. Interrupts can be enabled with
3187 function sEnInterrupts().
3189 This function clears the appropriate bit for the channel in the AIOP's
3190 Interrupt Mask Register if the CHANINT_EN flag is set. This blocks
3191 this channel's bit from being set in the AIOP's Interrupt Channel
3194 static void sDisInterrupts(CHANNEL_T * ChP, Word_t Flags)
3196 Byte_t Mask; /* Interrupt Mask Register */
3198 ChP->RxControl[2] &=
3199 ~((Byte_t) Flags & (RXINT_EN | SRCINT_EN | MCINT_EN));
3200 sOutDW(ChP->IndexAddr, *(DWord_t *) & ChP->RxControl[0]);
3201 ChP->TxControl[2] &= ~((Byte_t) Flags & TXINT_EN);
3202 sOutDW(ChP->IndexAddr, *(DWord_t *) & ChP->TxControl[0]);
3204 if (Flags & CHANINT_EN) {
3205 Mask = sInB(ChP->IntMask) & sBitMapClrTbl[ChP->ChanNum];
3206 sOutB(ChP->IntMask, Mask);
3210 static void sSetInterfaceMode(CHANNEL_T * ChP, Byte_t mode)
3212 sOutB(ChP->CtlP->AiopIO[2], (mode & 0x18) | ChP->ChanNum);
3216 * Not an official SSCI function, but how to reset RocketModems.
3219 static void sModemReset(CONTROLLER_T * CtlP, int chan, int on)
3224 addr = CtlP->AiopIO[0] + 0x400;
3225 val = sInB(CtlP->MReg3IO);
3226 /* if AIOP[1] is not enabled, enable it */
3227 if ((val & 2) == 0) {
3228 val = sInB(CtlP->MReg2IO);
3229 sOutB(CtlP->MReg2IO, (val & 0xfc) | (1 & 0x03));
3230 sOutB(CtlP->MBaseIO, (unsigned char) (addr >> 6));
3236 sOutB(addr + chan, 0); /* apply or remove reset */
3241 * Not an official SSCI function, but how to reset RocketModems.
3244 static void sPCIModemReset(CONTROLLER_T * CtlP, int chan, int on)
3248 addr = CtlP->AiopIO[0] + 0x40; /* 2nd AIOP */
3251 sOutB(addr + chan, 0); /* apply or remove reset */
3254 /* Resets the speaker controller on RocketModem II and III devices */
3255 static void rmSpeakerReset(CONTROLLER_T * CtlP, unsigned long model)
3259 /* RocketModem II speaker control is at the 8th port location of offset 0x40 */
3260 if ((model == MODEL_RP4M) || (model == MODEL_RP6M)) {
3261 addr = CtlP->AiopIO[0] + 0x4F;
3265 /* RocketModem III speaker control is at the 1st port location of offset 0x80 */
3266 if ((model == MODEL_UPCI_RM3_8PORT)
3267 || (model == MODEL_UPCI_RM3_4PORT)) {
3268 addr = CtlP->AiopIO[0] + 0x88;
3273 /* Returns the line number given the controller (board), aiop and channel number */
3274 static unsigned char GetLineNumber(int ctrl, int aiop, int ch)
3276 return lineNumbers[(ctrl << 5) | (aiop << 3) | ch];
3280 * Stores the line number associated with a given controller (board), aiop
3281 * and channel number.
3282 * Returns: The line number assigned
3284 static unsigned char SetLineNumber(int ctrl, int aiop, int ch)
3286 lineNumbers[(ctrl << 5) | (aiop << 3) | ch] = nextLineNumber++;
3287 return (nextLineNumber - 1);