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 if ((info->flags & ROCKET_INITIALIZED) == 0) {
1018 cp = &info->channel;
1019 sSetRxTrigger(cp, TRIG_1);
1020 if (sGetChanStatus(cp) & CD_ACT)
1021 info->cd_status = 1;
1023 info->cd_status = 0;
1024 sDisRxStatusMode(cp);
1028 sEnInterrupts(cp, (TXINT_EN | MCINT_EN | RXINT_EN | SRCINT_EN | CHANINT_EN));
1029 sSetRxTrigger(cp, TRIG_1);
1032 sDisRxStatusMode(cp);
1036 sDisTxSoftFlowCtl(cp);
1041 info->flags |= ROCKET_INITIALIZED;
1044 * Set up the tty->alt_speed kludge
1046 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_HI)
1047 info->tty->alt_speed = 57600;
1048 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_VHI)
1049 info->tty->alt_speed = 115200;
1050 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_SHI)
1051 info->tty->alt_speed = 230400;
1052 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_WARP)
1053 info->tty->alt_speed = 460800;
1055 configure_r_port(info, NULL);
1056 if (tty->termios->c_cflag & CBAUD) {
1061 /* Starts (or resets) the maint polling loop */
1062 mod_timer(&rocket_timer, jiffies + POLL_PERIOD);
1064 retval = block_til_ready(tty, filp, info);
1066 #ifdef ROCKET_DEBUG_OPEN
1067 printk(KERN_INFO "rp_open returning after block_til_ready with %d\n", retval);
1075 * Exception handler that closes a serial port. info->count is considered critical.
1077 static void rp_close(struct tty_struct *tty, struct file *filp)
1079 struct r_port *info = (struct r_port *) tty->driver_data;
1080 unsigned long flags;
1084 if (rocket_paranoia_check(info, "rp_close"))
1087 #ifdef ROCKET_DEBUG_OPEN
1088 printk(KERN_INFO "rp_close ttyR%d, count = %d\n", info->line, info->count);
1091 if (tty_hung_up_p(filp))
1093 spin_lock_irqsave(&info->slock, flags);
1095 if ((tty->count == 1) && (info->count != 1)) {
1097 * Uh, oh. tty->count is 1, which means that the tty
1098 * structure will be freed. Info->count should always
1099 * be one in these conditions. If it's greater than
1100 * one, we've got real problems, since it means the
1101 * serial port won't be shutdown.
1103 printk(KERN_INFO "rp_close: bad serial port count; tty->count is 1, "
1104 "info->count is %d\n", info->count);
1107 if (--info->count < 0) {
1108 printk(KERN_INFO "rp_close: bad serial port count for ttyR%d: %d\n",
1109 info->line, info->count);
1113 spin_unlock_irqrestore(&info->slock, flags);
1116 info->flags |= ROCKET_CLOSING;
1117 spin_unlock_irqrestore(&info->slock, flags);
1119 cp = &info->channel;
1122 * Notify the line discpline to only process XON/XOFF characters
1127 * If transmission was throttled by the application request,
1128 * just flush the xmit buffer.
1130 if (tty->flow_stopped)
1131 rp_flush_buffer(tty);
1134 * Wait for the transmit buffer to clear
1136 if (info->closing_wait != ROCKET_CLOSING_WAIT_NONE)
1137 tty_wait_until_sent(tty, info->closing_wait);
1139 * Before we drop DTR, make sure the UART transmitter
1140 * has completely drained; this is especially
1141 * important if there is a transmit FIFO!
1143 timeout = (sGetTxCnt(cp) + 1) * HZ / info->cps;
1146 rp_wait_until_sent(tty, timeout);
1147 clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
1150 sDisInterrupts(cp, (TXINT_EN | MCINT_EN | RXINT_EN | SRCINT_EN | CHANINT_EN));
1152 sDisTxSoftFlowCtl(cp);
1160 if (TTY_DRIVER_FLUSH_BUFFER_EXISTS(tty))
1161 TTY_DRIVER_FLUSH_BUFFER(tty);
1163 tty_ldisc_flush(tty);
1165 clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
1167 if (info->blocked_open) {
1168 if (info->close_delay) {
1169 msleep_interruptible(jiffies_to_msecs(info->close_delay));
1171 wake_up_interruptible(&info->open_wait);
1173 if (info->xmit_buf) {
1174 free_page((unsigned long) info->xmit_buf);
1175 info->xmit_buf = NULL;
1178 info->flags &= ~(ROCKET_INITIALIZED | ROCKET_CLOSING | ROCKET_NORMAL_ACTIVE);
1180 wake_up_interruptible(&info->close_wait);
1181 atomic_dec(&rp_num_ports_open);
1183 #ifdef ROCKET_DEBUG_OPEN
1184 printk(KERN_INFO "rocket mod-- = %d...", atomic_read(&rp_num_ports_open));
1185 printk(KERN_INFO "rp_close ttyR%d complete shutdown\n", info->line);
1190 static void rp_set_termios(struct tty_struct *tty,
1191 struct ktermios *old_termios)
1193 struct r_port *info = (struct r_port *) tty->driver_data;
1197 if (rocket_paranoia_check(info, "rp_set_termios"))
1200 cflag = tty->termios->c_cflag;
1202 if (cflag == old_termios->c_cflag)
1206 * This driver doesn't support CS5 or CS6
1208 if (((cflag & CSIZE) == CS5) || ((cflag & CSIZE) == CS6))
1209 tty->termios->c_cflag =
1210 ((cflag & ~CSIZE) | (old_termios->c_cflag & CSIZE));
1212 configure_r_port(info, old_termios);
1214 cp = &info->channel;
1216 /* Handle transition to B0 status */
1217 if ((old_termios->c_cflag & CBAUD) && !(tty->termios->c_cflag & CBAUD)) {
1222 /* Handle transition away from B0 status */
1223 if (!(old_termios->c_cflag & CBAUD) && (tty->termios->c_cflag & CBAUD)) {
1224 if (!tty->hw_stopped || !(tty->termios->c_cflag & CRTSCTS))
1229 if ((old_termios->c_cflag & CRTSCTS) && !(tty->termios->c_cflag & CRTSCTS)) {
1230 tty->hw_stopped = 0;
1235 static void rp_break(struct tty_struct *tty, int break_state)
1237 struct r_port *info = (struct r_port *) tty->driver_data;
1238 unsigned long flags;
1240 if (rocket_paranoia_check(info, "rp_break"))
1243 spin_lock_irqsave(&info->slock, flags);
1244 if (break_state == -1)
1245 sSendBreak(&info->channel);
1247 sClrBreak(&info->channel);
1248 spin_unlock_irqrestore(&info->slock, flags);
1252 * sGetChanRI used to be a macro in rocket_int.h. When the functionality for
1253 * the UPCI boards was added, it was decided to make this a function because
1254 * the macro was getting too complicated. All cases except the first one
1255 * (UPCIRingInd) are taken directly from the original macro.
1257 static int sGetChanRI(CHANNEL_T * ChP)
1259 CONTROLLER_t *CtlP = ChP->CtlP;
1260 int ChanNum = ChP->ChanNum;
1263 if (CtlP->UPCIRingInd)
1264 RingInd = !(sInB(CtlP->UPCIRingInd) & sBitMapSetTbl[ChanNum]);
1265 else if (CtlP->AltChanRingIndicator)
1266 RingInd = sInB((ByteIO_t) (ChP->ChanStat + 8)) & DSR_ACT;
1267 else if (CtlP->boardType == ROCKET_TYPE_PC104)
1268 RingInd = !(sInB(CtlP->AiopIO[3]) & sBitMapSetTbl[ChanNum]);
1273 /********************************************************************************************/
1274 /* Here are the routines used by rp_ioctl. These are all called from exception handlers. */
1277 * Returns the state of the serial modem control lines. These next 2 functions
1278 * are the way kernel versions > 2.5 handle modem control lines rather than IOCTLs.
1280 static int rp_tiocmget(struct tty_struct *tty, struct file *file)
1282 struct r_port *info = (struct r_port *)tty->driver_data;
1283 unsigned int control, result, ChanStatus;
1285 ChanStatus = sGetChanStatusLo(&info->channel);
1286 control = info->channel.TxControl[3];
1287 result = ((control & SET_RTS) ? TIOCM_RTS : 0) |
1288 ((control & SET_DTR) ? TIOCM_DTR : 0) |
1289 ((ChanStatus & CD_ACT) ? TIOCM_CAR : 0) |
1290 (sGetChanRI(&info->channel) ? TIOCM_RNG : 0) |
1291 ((ChanStatus & DSR_ACT) ? TIOCM_DSR : 0) |
1292 ((ChanStatus & CTS_ACT) ? TIOCM_CTS : 0);
1298 * Sets the modem control lines
1300 static int rp_tiocmset(struct tty_struct *tty, struct file *file,
1301 unsigned int set, unsigned int clear)
1303 struct r_port *info = (struct r_port *)tty->driver_data;
1305 if (set & TIOCM_RTS)
1306 info->channel.TxControl[3] |= SET_RTS;
1307 if (set & TIOCM_DTR)
1308 info->channel.TxControl[3] |= SET_DTR;
1309 if (clear & TIOCM_RTS)
1310 info->channel.TxControl[3] &= ~SET_RTS;
1311 if (clear & TIOCM_DTR)
1312 info->channel.TxControl[3] &= ~SET_DTR;
1314 sOutDW(info->channel.IndexAddr, *(DWord_t *) & (info->channel.TxControl[0]));
1318 static int get_config(struct r_port *info, struct rocket_config __user *retinfo)
1320 struct rocket_config tmp;
1324 memset(&tmp, 0, sizeof (tmp));
1325 tmp.line = info->line;
1326 tmp.flags = info->flags;
1327 tmp.close_delay = info->close_delay;
1328 tmp.closing_wait = info->closing_wait;
1329 tmp.port = rcktpt_io_addr[(info->line >> 5) & 3];
1331 if (copy_to_user(retinfo, &tmp, sizeof (*retinfo)))
1336 static int set_config(struct r_port *info, struct rocket_config __user *new_info)
1338 struct rocket_config new_serial;
1340 if (copy_from_user(&new_serial, new_info, sizeof (new_serial)))
1343 if (!capable(CAP_SYS_ADMIN))
1345 if ((new_serial.flags & ~ROCKET_USR_MASK) != (info->flags & ~ROCKET_USR_MASK))
1347 info->flags = ((info->flags & ~ROCKET_USR_MASK) | (new_serial.flags & ROCKET_USR_MASK));
1348 configure_r_port(info, NULL);
1352 info->flags = ((info->flags & ~ROCKET_FLAGS) | (new_serial.flags & ROCKET_FLAGS));
1353 info->close_delay = new_serial.close_delay;
1354 info->closing_wait = new_serial.closing_wait;
1356 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_HI)
1357 info->tty->alt_speed = 57600;
1358 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_VHI)
1359 info->tty->alt_speed = 115200;
1360 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_SHI)
1361 info->tty->alt_speed = 230400;
1362 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_WARP)
1363 info->tty->alt_speed = 460800;
1365 configure_r_port(info, NULL);
1370 * This function fills in a rocket_ports struct with information
1371 * about what boards/ports are in the system. This info is passed
1372 * to user space. See setrocket.c where the info is used to create
1373 * the /dev/ttyRx ports.
1375 static int get_ports(struct r_port *info, struct rocket_ports __user *retports)
1377 struct rocket_ports tmp;
1382 memset(&tmp, 0, sizeof (tmp));
1383 tmp.tty_major = rocket_driver->major;
1385 for (board = 0; board < 4; board++) {
1386 tmp.rocketModel[board].model = rocketModel[board].model;
1387 strcpy(tmp.rocketModel[board].modelString, rocketModel[board].modelString);
1388 tmp.rocketModel[board].numPorts = rocketModel[board].numPorts;
1389 tmp.rocketModel[board].loadrm2 = rocketModel[board].loadrm2;
1390 tmp.rocketModel[board].startingPortNumber = rocketModel[board].startingPortNumber;
1392 if (copy_to_user(retports, &tmp, sizeof (*retports)))
1397 static int reset_rm2(struct r_port *info, void __user *arg)
1401 if (copy_from_user(&reset, arg, sizeof (int)))
1406 if (rcktpt_type[info->board] != ROCKET_TYPE_MODEMII &&
1407 rcktpt_type[info->board] != ROCKET_TYPE_MODEMIII)
1410 if (info->ctlp->BusType == isISA)
1411 sModemReset(info->ctlp, info->chan, reset);
1413 sPCIModemReset(info->ctlp, info->chan, reset);
1418 static int get_version(struct r_port *info, struct rocket_version __user *retvers)
1420 if (copy_to_user(retvers, &driver_version, sizeof (*retvers)))
1425 /* IOCTL call handler into the driver */
1426 static int rp_ioctl(struct tty_struct *tty, struct file *file,
1427 unsigned int cmd, unsigned long arg)
1429 struct r_port *info = (struct r_port *) tty->driver_data;
1430 void __user *argp = (void __user *)arg;
1432 if (cmd != RCKP_GET_PORTS && rocket_paranoia_check(info, "rp_ioctl"))
1436 case RCKP_GET_STRUCT:
1437 if (copy_to_user(argp, info, sizeof (struct r_port)))
1440 case RCKP_GET_CONFIG:
1441 return get_config(info, argp);
1442 case RCKP_SET_CONFIG:
1443 return set_config(info, argp);
1444 case RCKP_GET_PORTS:
1445 return get_ports(info, argp);
1446 case RCKP_RESET_RM2:
1447 return reset_rm2(info, argp);
1448 case RCKP_GET_VERSION:
1449 return get_version(info, argp);
1451 return -ENOIOCTLCMD;
1456 static void rp_send_xchar(struct tty_struct *tty, char ch)
1458 struct r_port *info = (struct r_port *) tty->driver_data;
1461 if (rocket_paranoia_check(info, "rp_send_xchar"))
1464 cp = &info->channel;
1466 sWriteTxPrioByte(cp, ch);
1468 sWriteTxByte(sGetTxRxDataIO(cp), ch);
1471 static void rp_throttle(struct tty_struct *tty)
1473 struct r_port *info = (struct r_port *) tty->driver_data;
1476 #ifdef ROCKET_DEBUG_THROTTLE
1477 printk(KERN_INFO "throttle %s: %d....\n", tty->name,
1478 tty->ldisc.chars_in_buffer(tty));
1481 if (rocket_paranoia_check(info, "rp_throttle"))
1484 cp = &info->channel;
1486 rp_send_xchar(tty, STOP_CHAR(tty));
1488 sClrRTS(&info->channel);
1491 static void rp_unthrottle(struct tty_struct *tty)
1493 struct r_port *info = (struct r_port *) tty->driver_data;
1495 #ifdef ROCKET_DEBUG_THROTTLE
1496 printk(KERN_INFO "unthrottle %s: %d....\n", tty->name,
1497 tty->ldisc.chars_in_buffer(tty));
1500 if (rocket_paranoia_check(info, "rp_throttle"))
1503 cp = &info->channel;
1505 rp_send_xchar(tty, START_CHAR(tty));
1507 sSetRTS(&info->channel);
1511 * ------------------------------------------------------------
1512 * rp_stop() and rp_start()
1514 * This routines are called before setting or resetting tty->stopped.
1515 * They enable or disable transmitter interrupts, as necessary.
1516 * ------------------------------------------------------------
1518 static void rp_stop(struct tty_struct *tty)
1520 struct r_port *info = (struct r_port *) tty->driver_data;
1522 #ifdef ROCKET_DEBUG_FLOW
1523 printk(KERN_INFO "stop %s: %d %d....\n", tty->name,
1524 info->xmit_cnt, info->xmit_fifo_room);
1527 if (rocket_paranoia_check(info, "rp_stop"))
1530 if (sGetTxCnt(&info->channel))
1531 sDisTransmit(&info->channel);
1534 static void rp_start(struct tty_struct *tty)
1536 struct r_port *info = (struct r_port *) tty->driver_data;
1538 #ifdef ROCKET_DEBUG_FLOW
1539 printk(KERN_INFO "start %s: %d %d....\n", tty->name,
1540 info->xmit_cnt, info->xmit_fifo_room);
1543 if (rocket_paranoia_check(info, "rp_stop"))
1546 sEnTransmit(&info->channel);
1547 set_bit((info->aiop * 8) + info->chan,
1548 (void *) &xmit_flags[info->board]);
1552 * rp_wait_until_sent() --- wait until the transmitter is empty
1554 static void rp_wait_until_sent(struct tty_struct *tty, int timeout)
1556 struct r_port *info = (struct r_port *) tty->driver_data;
1558 unsigned long orig_jiffies;
1559 int check_time, exit_time;
1562 if (rocket_paranoia_check(info, "rp_wait_until_sent"))
1565 cp = &info->channel;
1567 orig_jiffies = jiffies;
1568 #ifdef ROCKET_DEBUG_WAIT_UNTIL_SENT
1569 printk(KERN_INFO "In RP_wait_until_sent(%d) (jiff=%lu)...", timeout,
1571 printk(KERN_INFO "cps=%d...", info->cps);
1574 txcnt = sGetTxCnt(cp);
1576 if (sGetChanStatusLo(cp) & TXSHRMT)
1578 check_time = (HZ / info->cps) / 5;
1580 check_time = HZ * txcnt / info->cps;
1583 exit_time = orig_jiffies + timeout - jiffies;
1586 if (exit_time < check_time)
1587 check_time = exit_time;
1589 if (check_time == 0)
1591 #ifdef ROCKET_DEBUG_WAIT_UNTIL_SENT
1592 printk(KERN_INFO "txcnt = %d (jiff=%lu,check=%d)...", txcnt, jiffies, check_time);
1594 msleep_interruptible(jiffies_to_msecs(check_time));
1595 if (signal_pending(current))
1598 __set_current_state(TASK_RUNNING);
1599 #ifdef ROCKET_DEBUG_WAIT_UNTIL_SENT
1600 printk(KERN_INFO "txcnt = %d (jiff=%lu)...done\n", txcnt, jiffies);
1605 * rp_hangup() --- called by tty_hangup() when a hangup is signaled.
1607 static void rp_hangup(struct tty_struct *tty)
1610 struct r_port *info = (struct r_port *) tty->driver_data;
1612 if (rocket_paranoia_check(info, "rp_hangup"))
1615 #if (defined(ROCKET_DEBUG_OPEN) || defined(ROCKET_DEBUG_HANGUP))
1616 printk(KERN_INFO "rp_hangup of ttyR%d...", info->line);
1618 rp_flush_buffer(tty);
1619 if (info->flags & ROCKET_CLOSING)
1622 atomic_dec(&rp_num_ports_open);
1623 clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
1626 info->flags &= ~ROCKET_NORMAL_ACTIVE;
1629 cp = &info->channel;
1632 sDisInterrupts(cp, (TXINT_EN | MCINT_EN | RXINT_EN | SRCINT_EN | CHANINT_EN));
1634 sDisTxSoftFlowCtl(cp);
1636 info->flags &= ~ROCKET_INITIALIZED;
1638 wake_up_interruptible(&info->open_wait);
1642 * Exception handler - write char routine. The RocketPort driver uses a
1643 * double-buffering strategy, with the twist that if the in-memory CPU
1644 * buffer is empty, and there's space in the transmit FIFO, the
1645 * writing routines will write directly to transmit FIFO.
1646 * Write buffer and counters protected by spinlocks
1648 static void rp_put_char(struct tty_struct *tty, unsigned char ch)
1650 struct r_port *info = (struct r_port *) tty->driver_data;
1652 unsigned long flags;
1654 if (rocket_paranoia_check(info, "rp_put_char"))
1658 * Grab the port write mutex, locking out other processes that try to
1659 * write to this port
1661 mutex_lock(&info->write_mtx);
1663 #ifdef ROCKET_DEBUG_WRITE
1664 printk(KERN_INFO "rp_put_char %c...", ch);
1667 spin_lock_irqsave(&info->slock, flags);
1668 cp = &info->channel;
1670 if (!tty->stopped && !tty->hw_stopped && info->xmit_fifo_room == 0)
1671 info->xmit_fifo_room = TXFIFO_SIZE - sGetTxCnt(cp);
1673 if (tty->stopped || tty->hw_stopped || info->xmit_fifo_room == 0 || info->xmit_cnt != 0) {
1674 info->xmit_buf[info->xmit_head++] = ch;
1675 info->xmit_head &= XMIT_BUF_SIZE - 1;
1677 set_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
1679 sOutB(sGetTxRxDataIO(cp), ch);
1680 info->xmit_fifo_room--;
1682 spin_unlock_irqrestore(&info->slock, flags);
1683 mutex_unlock(&info->write_mtx);
1687 * Exception handler - write routine, called when user app writes to the device.
1688 * A per port write mutex is used to protect from another process writing to
1689 * this port at the same time. This other process could be running on the other CPU
1690 * or get control of the CPU if the copy_from_user() blocks due to a page fault (swapped out).
1691 * Spinlocks protect the info xmit members.
1693 static int rp_write(struct tty_struct *tty,
1694 const unsigned char *buf, int count)
1696 struct r_port *info = (struct r_port *) tty->driver_data;
1698 const unsigned char *b;
1700 unsigned long flags;
1702 if (count <= 0 || rocket_paranoia_check(info, "rp_write"))
1705 mutex_lock_interruptible(&info->write_mtx);
1707 #ifdef ROCKET_DEBUG_WRITE
1708 printk(KERN_INFO "rp_write %d chars...", count);
1710 cp = &info->channel;
1712 if (!tty->stopped && !tty->hw_stopped && info->xmit_fifo_room < count)
1713 info->xmit_fifo_room = TXFIFO_SIZE - sGetTxCnt(cp);
1716 * If the write queue for the port is empty, and there is FIFO space, stuff bytes
1717 * into FIFO. Use the write queue for temp storage.
1719 if (!tty->stopped && !tty->hw_stopped && info->xmit_cnt == 0 && info->xmit_fifo_room > 0) {
1720 c = min(count, info->xmit_fifo_room);
1723 /* Push data into FIFO, 2 bytes at a time */
1724 sOutStrW(sGetTxRxDataIO(cp), (unsigned short *) b, c / 2);
1726 /* If there is a byte remaining, write it */
1728 sOutB(sGetTxRxDataIO(cp), b[c - 1]);
1734 spin_lock_irqsave(&info->slock, flags);
1735 info->xmit_fifo_room -= c;
1736 spin_unlock_irqrestore(&info->slock, flags);
1739 /* If count is zero, we wrote it all and are done */
1743 /* Write remaining data into the port's xmit_buf */
1745 if (info->tty == 0) /* Seemingly obligatory check... */
1748 c = min(count, min(XMIT_BUF_SIZE - info->xmit_cnt - 1, XMIT_BUF_SIZE - info->xmit_head));
1753 memcpy(info->xmit_buf + info->xmit_head, b, c);
1755 spin_lock_irqsave(&info->slock, flags);
1757 (info->xmit_head + c) & (XMIT_BUF_SIZE - 1);
1758 info->xmit_cnt += c;
1759 spin_unlock_irqrestore(&info->slock, flags);
1766 if ((retval > 0) && !tty->stopped && !tty->hw_stopped)
1767 set_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
1770 if (info->xmit_cnt < WAKEUP_CHARS) {
1772 #ifdef ROCKETPORT_HAVE_POLL_WAIT
1773 wake_up_interruptible(&tty->poll_wait);
1776 mutex_unlock(&info->write_mtx);
1781 * Return the number of characters that can be sent. We estimate
1782 * only using the in-memory transmit buffer only, and ignore the
1783 * potential space in the transmit FIFO.
1785 static int rp_write_room(struct tty_struct *tty)
1787 struct r_port *info = (struct r_port *) tty->driver_data;
1790 if (rocket_paranoia_check(info, "rp_write_room"))
1793 ret = XMIT_BUF_SIZE - info->xmit_cnt - 1;
1796 #ifdef ROCKET_DEBUG_WRITE
1797 printk(KERN_INFO "rp_write_room returns %d...", ret);
1803 * Return the number of characters in the buffer. Again, this only
1804 * counts those characters in the in-memory transmit buffer.
1806 static int rp_chars_in_buffer(struct tty_struct *tty)
1808 struct r_port *info = (struct r_port *) tty->driver_data;
1811 if (rocket_paranoia_check(info, "rp_chars_in_buffer"))
1814 cp = &info->channel;
1816 #ifdef ROCKET_DEBUG_WRITE
1817 printk(KERN_INFO "rp_chars_in_buffer returns %d...", info->xmit_cnt);
1819 return info->xmit_cnt;
1823 * Flushes the TX fifo for a port, deletes data in the xmit_buf stored in the
1824 * r_port struct for the port. Note that spinlock are used to protect info members,
1825 * do not call this function if the spinlock is already held.
1827 static void rp_flush_buffer(struct tty_struct *tty)
1829 struct r_port *info = (struct r_port *) tty->driver_data;
1831 unsigned long flags;
1833 if (rocket_paranoia_check(info, "rp_flush_buffer"))
1836 spin_lock_irqsave(&info->slock, flags);
1837 info->xmit_cnt = info->xmit_head = info->xmit_tail = 0;
1838 spin_unlock_irqrestore(&info->slock, flags);
1840 #ifdef ROCKETPORT_HAVE_POLL_WAIT
1841 wake_up_interruptible(&tty->poll_wait);
1845 cp = &info->channel;
1851 static struct pci_device_id __devinitdata rocket_pci_ids[] = {
1852 { PCI_DEVICE(PCI_VENDOR_ID_RP, PCI_ANY_ID) },
1855 MODULE_DEVICE_TABLE(pci, rocket_pci_ids);
1858 * Called when a PCI card is found. Retrieves and stores model information,
1859 * init's aiopic and serial port hardware.
1860 * Inputs: i is the board number (0-n)
1862 static __init int register_PCI(int i, struct pci_dev *dev)
1864 int num_aiops, aiop, max_num_aiops, num_chan, chan;
1865 unsigned int aiopio[MAX_AIOPS_PER_BOARD];
1866 char *str, *board_type;
1870 int altChanRingIndicator = 0;
1871 int ports_per_aiop = 8;
1873 unsigned int class_rev;
1874 WordIO_t ConfigIO = 0;
1875 ByteIO_t UPCIRingInd = 0;
1877 if (!dev || pci_enable_device(dev))
1880 rcktpt_io_addr[i] = pci_resource_start(dev, 0);
1881 ret = pci_read_config_dword(dev, PCI_CLASS_REVISION, &class_rev);
1884 printk(KERN_INFO " Error during register_PCI(), unable to read config dword \n");
1888 rcktpt_type[i] = ROCKET_TYPE_NORMAL;
1889 rocketModel[i].loadrm2 = 0;
1890 rocketModel[i].startingPortNumber = nextLineNumber;
1892 /* Depending on the model, set up some config variables */
1893 switch (dev->device) {
1894 case PCI_DEVICE_ID_RP4QUAD:
1898 rocketModel[i].model = MODEL_RP4QUAD;
1899 strcpy(rocketModel[i].modelString, "RocketPort 4 port w/quad cable");
1900 rocketModel[i].numPorts = 4;
1902 case PCI_DEVICE_ID_RP8OCTA:
1905 rocketModel[i].model = MODEL_RP8OCTA;
1906 strcpy(rocketModel[i].modelString, "RocketPort 8 port w/octa cable");
1907 rocketModel[i].numPorts = 8;
1909 case PCI_DEVICE_ID_URP8OCTA:
1912 rocketModel[i].model = MODEL_UPCI_RP8OCTA;
1913 strcpy(rocketModel[i].modelString, "RocketPort UPCI 8 port w/octa cable");
1914 rocketModel[i].numPorts = 8;
1916 case PCI_DEVICE_ID_RP8INTF:
1919 rocketModel[i].model = MODEL_RP8INTF;
1920 strcpy(rocketModel[i].modelString, "RocketPort 8 port w/external I/F");
1921 rocketModel[i].numPorts = 8;
1923 case PCI_DEVICE_ID_URP8INTF:
1926 rocketModel[i].model = MODEL_UPCI_RP8INTF;
1927 strcpy(rocketModel[i].modelString, "RocketPort UPCI 8 port w/external I/F");
1928 rocketModel[i].numPorts = 8;
1930 case PCI_DEVICE_ID_RP8J:
1933 rocketModel[i].model = MODEL_RP8J;
1934 strcpy(rocketModel[i].modelString, "RocketPort 8 port w/RJ11 connectors");
1935 rocketModel[i].numPorts = 8;
1937 case PCI_DEVICE_ID_RP4J:
1941 rocketModel[i].model = MODEL_RP4J;
1942 strcpy(rocketModel[i].modelString, "RocketPort 4 port w/RJ45 connectors");
1943 rocketModel[i].numPorts = 4;
1945 case PCI_DEVICE_ID_RP8SNI:
1946 str = "8 (DB78 Custom)";
1948 rocketModel[i].model = MODEL_RP8SNI;
1949 strcpy(rocketModel[i].modelString, "RocketPort 8 port w/ custom DB78");
1950 rocketModel[i].numPorts = 8;
1952 case PCI_DEVICE_ID_RP16SNI:
1953 str = "16 (DB78 Custom)";
1955 rocketModel[i].model = MODEL_RP16SNI;
1956 strcpy(rocketModel[i].modelString, "RocketPort 16 port w/ custom DB78");
1957 rocketModel[i].numPorts = 16;
1959 case PCI_DEVICE_ID_RP16INTF:
1962 rocketModel[i].model = MODEL_RP16INTF;
1963 strcpy(rocketModel[i].modelString, "RocketPort 16 port w/external I/F");
1964 rocketModel[i].numPorts = 16;
1966 case PCI_DEVICE_ID_URP16INTF:
1969 rocketModel[i].model = MODEL_UPCI_RP16INTF;
1970 strcpy(rocketModel[i].modelString, "RocketPort UPCI 16 port w/external I/F");
1971 rocketModel[i].numPorts = 16;
1973 case PCI_DEVICE_ID_CRP16INTF:
1976 rocketModel[i].model = MODEL_CPCI_RP16INTF;
1977 strcpy(rocketModel[i].modelString, "RocketPort Compact PCI 16 port w/external I/F");
1978 rocketModel[i].numPorts = 16;
1980 case PCI_DEVICE_ID_RP32INTF:
1983 rocketModel[i].model = MODEL_RP32INTF;
1984 strcpy(rocketModel[i].modelString, "RocketPort 32 port w/external I/F");
1985 rocketModel[i].numPorts = 32;
1987 case PCI_DEVICE_ID_URP32INTF:
1990 rocketModel[i].model = MODEL_UPCI_RP32INTF;
1991 strcpy(rocketModel[i].modelString, "RocketPort UPCI 32 port w/external I/F");
1992 rocketModel[i].numPorts = 32;
1994 case PCI_DEVICE_ID_RPP4:
1995 str = "Plus Quadcable";
1998 altChanRingIndicator++;
2000 rocketModel[i].model = MODEL_RPP4;
2001 strcpy(rocketModel[i].modelString, "RocketPort Plus 4 port");
2002 rocketModel[i].numPorts = 4;
2004 case PCI_DEVICE_ID_RPP8:
2005 str = "Plus Octacable";
2008 altChanRingIndicator++;
2010 rocketModel[i].model = MODEL_RPP8;
2011 strcpy(rocketModel[i].modelString, "RocketPort Plus 8 port");
2012 rocketModel[i].numPorts = 8;
2014 case PCI_DEVICE_ID_RP2_232:
2015 str = "Plus 2 (RS-232)";
2018 altChanRingIndicator++;
2020 rocketModel[i].model = MODEL_RP2_232;
2021 strcpy(rocketModel[i].modelString, "RocketPort Plus 2 port RS232");
2022 rocketModel[i].numPorts = 2;
2024 case PCI_DEVICE_ID_RP2_422:
2025 str = "Plus 2 (RS-422)";
2028 altChanRingIndicator++;
2030 rocketModel[i].model = MODEL_RP2_422;
2031 strcpy(rocketModel[i].modelString, "RocketPort Plus 2 port RS422");
2032 rocketModel[i].numPorts = 2;
2034 case PCI_DEVICE_ID_RP6M:
2040 /* If class_rev is 1, the rocketmodem flash must be loaded. If it is 2 it is a "socketed" version. */
2041 if ((class_rev & 0xFF) == 1) {
2042 rcktpt_type[i] = ROCKET_TYPE_MODEMII;
2043 rocketModel[i].loadrm2 = 1;
2045 rcktpt_type[i] = ROCKET_TYPE_MODEM;
2048 rocketModel[i].model = MODEL_RP6M;
2049 strcpy(rocketModel[i].modelString, "RocketModem 6 port");
2050 rocketModel[i].numPorts = 6;
2052 case PCI_DEVICE_ID_RP4M:
2056 if ((class_rev & 0xFF) == 1) {
2057 rcktpt_type[i] = ROCKET_TYPE_MODEMII;
2058 rocketModel[i].loadrm2 = 1;
2060 rcktpt_type[i] = ROCKET_TYPE_MODEM;
2063 rocketModel[i].model = MODEL_RP4M;
2064 strcpy(rocketModel[i].modelString, "RocketModem 4 port");
2065 rocketModel[i].numPorts = 4;
2068 str = "(unknown/unsupported)";
2074 * Check for UPCI boards.
2077 switch (dev->device) {
2078 case PCI_DEVICE_ID_URP32INTF:
2079 case PCI_DEVICE_ID_URP8INTF:
2080 case PCI_DEVICE_ID_URP16INTF:
2081 case PCI_DEVICE_ID_CRP16INTF:
2082 case PCI_DEVICE_ID_URP8OCTA:
2083 rcktpt_io_addr[i] = pci_resource_start(dev, 2);
2084 ConfigIO = pci_resource_start(dev, 1);
2085 if (dev->device == PCI_DEVICE_ID_URP8OCTA) {
2086 UPCIRingInd = rcktpt_io_addr[i] + _PCI_9030_RING_IND;
2089 * Check for octa or quad cable.
2092 (sInW(ConfigIO + _PCI_9030_GPIO_CTRL) &
2093 PCI_GPIO_CTRL_8PORT)) {
2096 rocketModel[i].numPorts = 4;
2100 case PCI_DEVICE_ID_UPCI_RM3_8PORT:
2103 rocketModel[i].model = MODEL_UPCI_RM3_8PORT;
2104 strcpy(rocketModel[i].modelString, "RocketModem III 8 port");
2105 rocketModel[i].numPorts = 8;
2106 rcktpt_io_addr[i] = pci_resource_start(dev, 2);
2107 UPCIRingInd = rcktpt_io_addr[i] + _PCI_9030_RING_IND;
2108 ConfigIO = pci_resource_start(dev, 1);
2109 rcktpt_type[i] = ROCKET_TYPE_MODEMIII;
2111 case PCI_DEVICE_ID_UPCI_RM3_4PORT:
2114 rocketModel[i].model = MODEL_UPCI_RM3_4PORT;
2115 strcpy(rocketModel[i].modelString, "RocketModem III 4 port");
2116 rocketModel[i].numPorts = 4;
2117 rcktpt_io_addr[i] = pci_resource_start(dev, 2);
2118 UPCIRingInd = rcktpt_io_addr[i] + _PCI_9030_RING_IND;
2119 ConfigIO = pci_resource_start(dev, 1);
2120 rcktpt_type[i] = ROCKET_TYPE_MODEMIII;
2126 switch (rcktpt_type[i]) {
2127 case ROCKET_TYPE_MODEM:
2128 board_type = "RocketModem";
2130 case ROCKET_TYPE_MODEMII:
2131 board_type = "RocketModem II";
2133 case ROCKET_TYPE_MODEMIII:
2134 board_type = "RocketModem III";
2137 board_type = "RocketPort";
2142 sClockPrescale = 0x12; /* mod 2 (divide by 3) */
2143 rp_baud_base[i] = 921600;
2146 * If support_low_speed is set, use the slow clock
2147 * prescale, which supports 50 bps
2149 if (support_low_speed) {
2150 /* mod 9 (divide by 10) prescale */
2151 sClockPrescale = 0x19;
2152 rp_baud_base[i] = 230400;
2154 /* mod 4 (devide by 5) prescale */
2155 sClockPrescale = 0x14;
2156 rp_baud_base[i] = 460800;
2160 for (aiop = 0; aiop < max_num_aiops; aiop++)
2161 aiopio[aiop] = rcktpt_io_addr[i] + (aiop * 0x40);
2162 ctlp = sCtlNumToCtlPtr(i);
2163 num_aiops = sPCIInitController(ctlp, i, aiopio, max_num_aiops, ConfigIO, 0, FREQ_DIS, 0, altChanRingIndicator, UPCIRingInd);
2164 for (aiop = 0; aiop < max_num_aiops; aiop++)
2165 ctlp->AiopNumChan[aiop] = ports_per_aiop;
2167 printk("Comtrol PCI controller #%d ID 0x%x found in bus:slot:fn %s at address %04lx, "
2168 "%d AIOP(s) (%s)\n", i, dev->device, pci_name(dev),
2169 rcktpt_io_addr[i], num_aiops, rocketModel[i].modelString);
2170 printk(KERN_INFO "Installing %s, creating /dev/ttyR%d - %ld\n",
2171 rocketModel[i].modelString,
2172 rocketModel[i].startingPortNumber,
2173 rocketModel[i].startingPortNumber +
2174 rocketModel[i].numPorts - 1);
2176 if (num_aiops <= 0) {
2177 rcktpt_io_addr[i] = 0;
2182 /* Reset the AIOPIC, init the serial ports */
2183 for (aiop = 0; aiop < num_aiops; aiop++) {
2184 sResetAiopByNum(ctlp, aiop);
2185 num_chan = ports_per_aiop;
2186 for (chan = 0; chan < num_chan; chan++)
2187 init_r_port(i, aiop, chan, dev);
2190 /* Rocket modems must be reset */
2191 if ((rcktpt_type[i] == ROCKET_TYPE_MODEM) ||
2192 (rcktpt_type[i] == ROCKET_TYPE_MODEMII) ||
2193 (rcktpt_type[i] == ROCKET_TYPE_MODEMIII)) {
2194 num_chan = ports_per_aiop;
2195 for (chan = 0; chan < num_chan; chan++)
2196 sPCIModemReset(ctlp, chan, 1);
2198 for (chan = 0; chan < num_chan; chan++)
2199 sPCIModemReset(ctlp, chan, 0);
2201 rmSpeakerReset(ctlp, rocketModel[i].model);
2207 * Probes for PCI cards, inits them if found
2208 * Input: board_found = number of ISA boards already found, or the
2209 * starting board number
2210 * Returns: Number of PCI boards found
2212 static int __init init_PCI(int boards_found)
2214 struct pci_dev *dev = NULL;
2217 /* Work through the PCI device list, pulling out ours */
2218 while ((dev = pci_get_device(PCI_VENDOR_ID_RP, PCI_ANY_ID, dev))) {
2219 if (register_PCI(count + boards_found, dev))
2225 #endif /* CONFIG_PCI */
2228 * Probes for ISA cards
2229 * Input: i = the board number to look for
2230 * Returns: 1 if board found, 0 else
2232 static int __init init_ISA(int i)
2234 int num_aiops, num_chan = 0, total_num_chan = 0;
2236 unsigned int aiopio[MAX_AIOPS_PER_BOARD];
2240 /* If io_addr is zero, no board configured */
2241 if (rcktpt_io_addr[i] == 0)
2244 /* Reserve the IO region */
2245 if (!request_region(rcktpt_io_addr[i], 64, "Comtrol RocketPort")) {
2246 printk(KERN_INFO "Unable to reserve IO region for configured ISA RocketPort at address 0x%lx, board not installed...\n", rcktpt_io_addr[i]);
2247 rcktpt_io_addr[i] = 0;
2251 ctlp = sCtlNumToCtlPtr(i);
2253 ctlp->boardType = rcktpt_type[i];
2255 switch (rcktpt_type[i]) {
2256 case ROCKET_TYPE_PC104:
2257 type_string = "(PC104)";
2259 case ROCKET_TYPE_MODEM:
2260 type_string = "(RocketModem)";
2262 case ROCKET_TYPE_MODEMII:
2263 type_string = "(RocketModem II)";
2271 * If support_low_speed is set, use the slow clock prescale,
2272 * which supports 50 bps
2274 if (support_low_speed) {
2275 sClockPrescale = 0x19; /* mod 9 (divide by 10) prescale */
2276 rp_baud_base[i] = 230400;
2278 sClockPrescale = 0x14; /* mod 4 (devide by 5) prescale */
2279 rp_baud_base[i] = 460800;
2282 for (aiop = 0; aiop < MAX_AIOPS_PER_BOARD; aiop++)
2283 aiopio[aiop] = rcktpt_io_addr[i] + (aiop * 0x400);
2285 num_aiops = sInitController(ctlp, i, controller + (i * 0x400), aiopio, MAX_AIOPS_PER_BOARD, 0, FREQ_DIS, 0);
2287 if (ctlp->boardType == ROCKET_TYPE_PC104) {
2288 sEnAiop(ctlp, 2); /* only one AIOPIC, but these */
2289 sEnAiop(ctlp, 3); /* CSels used for other stuff */
2292 /* If something went wrong initing the AIOP's release the ISA IO memory */
2293 if (num_aiops <= 0) {
2294 release_region(rcktpt_io_addr[i], 64);
2295 rcktpt_io_addr[i] = 0;
2299 rocketModel[i].startingPortNumber = nextLineNumber;
2301 for (aiop = 0; aiop < num_aiops; aiop++) {
2302 sResetAiopByNum(ctlp, aiop);
2303 sEnAiop(ctlp, aiop);
2304 num_chan = sGetAiopNumChan(ctlp, aiop);
2305 total_num_chan += num_chan;
2306 for (chan = 0; chan < num_chan; chan++)
2307 init_r_port(i, aiop, chan, NULL);
2310 if ((rcktpt_type[i] == ROCKET_TYPE_MODEM) || (rcktpt_type[i] == ROCKET_TYPE_MODEMII)) {
2311 num_chan = sGetAiopNumChan(ctlp, 0);
2312 total_num_chan = num_chan;
2313 for (chan = 0; chan < num_chan; chan++)
2314 sModemReset(ctlp, chan, 1);
2316 for (chan = 0; chan < num_chan; chan++)
2317 sModemReset(ctlp, chan, 0);
2319 strcpy(rocketModel[i].modelString, "RocketModem ISA");
2321 strcpy(rocketModel[i].modelString, "RocketPort ISA");
2323 rocketModel[i].numPorts = total_num_chan;
2324 rocketModel[i].model = MODEL_ISA;
2326 printk(KERN_INFO "RocketPort ISA card #%d found at 0x%lx - %d AIOPs %s\n",
2327 i, rcktpt_io_addr[i], num_aiops, type_string);
2329 printk(KERN_INFO "Installing %s, creating /dev/ttyR%d - %ld\n",
2330 rocketModel[i].modelString,
2331 rocketModel[i].startingPortNumber,
2332 rocketModel[i].startingPortNumber +
2333 rocketModel[i].numPorts - 1);
2338 static const struct tty_operations rocket_ops = {
2342 .put_char = rp_put_char,
2343 .write_room = rp_write_room,
2344 .chars_in_buffer = rp_chars_in_buffer,
2345 .flush_buffer = rp_flush_buffer,
2347 .throttle = rp_throttle,
2348 .unthrottle = rp_unthrottle,
2349 .set_termios = rp_set_termios,
2352 .hangup = rp_hangup,
2353 .break_ctl = rp_break,
2354 .send_xchar = rp_send_xchar,
2355 .wait_until_sent = rp_wait_until_sent,
2356 .tiocmget = rp_tiocmget,
2357 .tiocmset = rp_tiocmset,
2361 * The module "startup" routine; it's run when the module is loaded.
2363 static int __init rp_init(void)
2365 int retval, pci_boards_found, isa_boards_found, i;
2367 printk(KERN_INFO "RocketPort device driver module, version %s, %s\n",
2368 ROCKET_VERSION, ROCKET_DATE);
2370 rocket_driver = alloc_tty_driver(MAX_RP_PORTS);
2375 * Initialize the array of pointers to our own internal state
2378 memset(rp_table, 0, sizeof (rp_table));
2379 memset(xmit_flags, 0, sizeof (xmit_flags));
2381 for (i = 0; i < MAX_RP_PORTS; i++)
2384 memset(rocketModel, 0, sizeof (rocketModel));
2387 * If board 1 is non-zero, there is at least one ISA configured. If controller is
2388 * zero, use the default controller IO address of board1 + 0x40.
2391 if (controller == 0)
2392 controller = board1 + 0x40;
2394 controller = 0; /* Used as a flag, meaning no ISA boards */
2397 /* If an ISA card is configured, reserve the 4 byte IO space for the Mudbac controller */
2398 if (controller && (!request_region(controller, 4, "Comtrol RocketPort"))) {
2399 printk(KERN_INFO "Unable to reserve IO region for first configured ISA RocketPort controller 0x%lx. Driver exiting \n", controller);
2403 /* Store ISA variable retrieved from command line or .conf file. */
2404 rcktpt_io_addr[0] = board1;
2405 rcktpt_io_addr[1] = board2;
2406 rcktpt_io_addr[2] = board3;
2407 rcktpt_io_addr[3] = board4;
2409 rcktpt_type[0] = modem1 ? ROCKET_TYPE_MODEM : ROCKET_TYPE_NORMAL;
2410 rcktpt_type[0] = pc104_1[0] ? ROCKET_TYPE_PC104 : rcktpt_type[0];
2411 rcktpt_type[1] = modem2 ? ROCKET_TYPE_MODEM : ROCKET_TYPE_NORMAL;
2412 rcktpt_type[1] = pc104_2[0] ? ROCKET_TYPE_PC104 : rcktpt_type[1];
2413 rcktpt_type[2] = modem3 ? ROCKET_TYPE_MODEM : ROCKET_TYPE_NORMAL;
2414 rcktpt_type[2] = pc104_3[0] ? ROCKET_TYPE_PC104 : rcktpt_type[2];
2415 rcktpt_type[3] = modem4 ? ROCKET_TYPE_MODEM : ROCKET_TYPE_NORMAL;
2416 rcktpt_type[3] = pc104_4[0] ? ROCKET_TYPE_PC104 : rcktpt_type[3];
2419 * Set up the tty driver structure and then register this
2420 * driver with the tty layer.
2423 rocket_driver->owner = THIS_MODULE;
2424 rocket_driver->flags = TTY_DRIVER_DYNAMIC_DEV;
2425 rocket_driver->name = "ttyR";
2426 rocket_driver->driver_name = "Comtrol RocketPort";
2427 rocket_driver->major = TTY_ROCKET_MAJOR;
2428 rocket_driver->minor_start = 0;
2429 rocket_driver->type = TTY_DRIVER_TYPE_SERIAL;
2430 rocket_driver->subtype = SERIAL_TYPE_NORMAL;
2431 rocket_driver->init_termios = tty_std_termios;
2432 rocket_driver->init_termios.c_cflag =
2433 B9600 | CS8 | CREAD | HUPCL | CLOCAL;
2434 rocket_driver->init_termios.c_ispeed = 9600;
2435 rocket_driver->init_termios.c_ospeed = 9600;
2436 #ifdef ROCKET_SOFT_FLOW
2437 rocket_driver->flags |= TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV;
2439 tty_set_operations(rocket_driver, &rocket_ops);
2441 retval = tty_register_driver(rocket_driver);
2443 printk(KERN_INFO "Couldn't install tty RocketPort driver (error %d)\n", -retval);
2444 put_tty_driver(rocket_driver);
2448 #ifdef ROCKET_DEBUG_OPEN
2449 printk(KERN_INFO "RocketPort driver is major %d\n", rocket_driver.major);
2453 * OK, let's probe each of the controllers looking for boards. Any boards found
2454 * will be initialized here.
2456 isa_boards_found = 0;
2457 pci_boards_found = 0;
2459 for (i = 0; i < NUM_BOARDS; i++) {
2465 if (isa_boards_found < NUM_BOARDS)
2466 pci_boards_found = init_PCI(isa_boards_found);
2469 max_board = pci_boards_found + isa_boards_found;
2471 if (max_board == 0) {
2472 printk(KERN_INFO "No rocketport ports found; unloading driver.\n");
2473 del_timer_sync(&rocket_timer);
2474 tty_unregister_driver(rocket_driver);
2475 put_tty_driver(rocket_driver);
2483 static void rp_cleanup_module(void)
2488 del_timer_sync(&rocket_timer);
2490 retval = tty_unregister_driver(rocket_driver);
2492 printk(KERN_INFO "Error %d while trying to unregister "
2493 "rocketport driver\n", -retval);
2494 put_tty_driver(rocket_driver);
2496 for (i = 0; i < MAX_RP_PORTS; i++)
2499 for (i = 0; i < NUM_BOARDS; i++) {
2500 if (rcktpt_io_addr[i] <= 0 || is_PCI[i])
2502 release_region(rcktpt_io_addr[i], 64);
2505 release_region(controller, 4);
2508 /***************************************************************************
2509 Function: sInitController
2510 Purpose: Initialization of controller global registers and controller
2512 Call: sInitController(CtlP,CtlNum,MudbacIO,AiopIOList,AiopIOListSize,
2513 IRQNum,Frequency,PeriodicOnly)
2514 CONTROLLER_T *CtlP; Ptr to controller structure
2515 int CtlNum; Controller number
2516 ByteIO_t MudbacIO; Mudbac base I/O address.
2517 ByteIO_t *AiopIOList; List of I/O addresses for each AIOP.
2518 This list must be in the order the AIOPs will be found on the
2519 controller. Once an AIOP in the list is not found, it is
2520 assumed that there are no more AIOPs on the controller.
2521 int AiopIOListSize; Number of addresses in AiopIOList
2522 int IRQNum; Interrupt Request number. Can be any of the following:
2523 0: Disable global interrupts
2532 Byte_t Frequency: A flag identifying the frequency
2533 of the periodic interrupt, can be any one of the following:
2534 FREQ_DIS - periodic interrupt disabled
2535 FREQ_137HZ - 137 Hertz
2536 FREQ_69HZ - 69 Hertz
2537 FREQ_34HZ - 34 Hertz
2538 FREQ_17HZ - 17 Hertz
2541 If IRQNum is set to 0 the Frequency parameter is
2542 overidden, it is forced to a value of FREQ_DIS.
2543 int PeriodicOnly: 1 if all interrupts except the periodic
2544 interrupt are to be blocked.
2545 0 is both the periodic interrupt and
2546 other channel interrupts are allowed.
2547 If IRQNum is set to 0 the PeriodicOnly parameter is
2548 overidden, it is forced to a value of 0.
2549 Return: int: Number of AIOPs on the controller, or CTLID_NULL if controller
2550 initialization failed.
2553 If periodic interrupts are to be disabled but AIOP interrupts
2554 are allowed, set Frequency to FREQ_DIS and PeriodicOnly to 0.
2556 If interrupts are to be completely disabled set IRQNum to 0.
2558 Setting Frequency to FREQ_DIS and PeriodicOnly to 1 is an
2559 invalid combination.
2561 This function performs initialization of global interrupt modes,
2562 but it does not actually enable global interrupts. To enable
2563 and disable global interrupts use functions sEnGlobalInt() and
2564 sDisGlobalInt(). Enabling of global interrupts is normally not
2565 done until all other initializations are complete.
2567 Even if interrupts are globally enabled, they must also be
2568 individually enabled for each channel that is to generate
2571 Warnings: No range checking on any of the parameters is done.
2573 No context switches are allowed while executing this function.
2575 After this function all AIOPs on the controller are disabled,
2576 they can be enabled with sEnAiop().
2578 static int sInitController(CONTROLLER_T * CtlP, int CtlNum, ByteIO_t MudbacIO,
2579 ByteIO_t * AiopIOList, int AiopIOListSize,
2580 int IRQNum, Byte_t Frequency, int PeriodicOnly)
2586 CtlP->AiopIntrBits = aiop_intr_bits;
2587 CtlP->AltChanRingIndicator = 0;
2588 CtlP->CtlNum = CtlNum;
2589 CtlP->CtlID = CTLID_0001; /* controller release 1 */
2590 CtlP->BusType = isISA;
2591 CtlP->MBaseIO = MudbacIO;
2592 CtlP->MReg1IO = MudbacIO + 1;
2593 CtlP->MReg2IO = MudbacIO + 2;
2594 CtlP->MReg3IO = MudbacIO + 3;
2596 CtlP->MReg2 = 0; /* interrupt disable */
2597 CtlP->MReg3 = 0; /* no periodic interrupts */
2599 if (sIRQMap[IRQNum] == 0) { /* interrupts globally disabled */
2600 CtlP->MReg2 = 0; /* interrupt disable */
2601 CtlP->MReg3 = 0; /* no periodic interrupts */
2603 CtlP->MReg2 = sIRQMap[IRQNum]; /* set IRQ number */
2604 CtlP->MReg3 = Frequency; /* set frequency */
2605 if (PeriodicOnly) { /* periodic interrupt only */
2606 CtlP->MReg3 |= PERIODIC_ONLY;
2610 sOutB(CtlP->MReg2IO, CtlP->MReg2);
2611 sOutB(CtlP->MReg3IO, CtlP->MReg3);
2612 sControllerEOI(CtlP); /* clear EOI if warm init */
2615 for (i = done = 0; i < AiopIOListSize; i++) {
2617 CtlP->AiopIO[i] = (WordIO_t) io;
2618 CtlP->AiopIntChanIO[i] = io + _INT_CHAN;
2619 sOutB(CtlP->MReg2IO, CtlP->MReg2 | (i & 0x03)); /* AIOP index */
2620 sOutB(MudbacIO, (Byte_t) (io >> 6)); /* set up AIOP I/O in MUDBAC */
2623 sEnAiop(CtlP, i); /* enable the AIOP */
2624 CtlP->AiopID[i] = sReadAiopID(io); /* read AIOP ID */
2625 if (CtlP->AiopID[i] == AIOPID_NULL) /* if AIOP does not exist */
2626 done = 1; /* done looking for AIOPs */
2628 CtlP->AiopNumChan[i] = sReadAiopNumChan((WordIO_t) io); /* num channels in AIOP */
2629 sOutW((WordIO_t) io + _INDX_ADDR, _CLK_PRE); /* clock prescaler */
2630 sOutB(io + _INDX_DATA, sClockPrescale);
2631 CtlP->NumAiop++; /* bump count of AIOPs */
2633 sDisAiop(CtlP, i); /* disable AIOP */
2636 if (CtlP->NumAiop == 0)
2639 return (CtlP->NumAiop);
2642 /***************************************************************************
2643 Function: sPCIInitController
2644 Purpose: Initialization of controller global registers and controller
2646 Call: sPCIInitController(CtlP,CtlNum,AiopIOList,AiopIOListSize,
2647 IRQNum,Frequency,PeriodicOnly)
2648 CONTROLLER_T *CtlP; Ptr to controller structure
2649 int CtlNum; Controller number
2650 ByteIO_t *AiopIOList; List of I/O addresses for each AIOP.
2651 This list must be in the order the AIOPs will be found on the
2652 controller. Once an AIOP in the list is not found, it is
2653 assumed that there are no more AIOPs on the controller.
2654 int AiopIOListSize; Number of addresses in AiopIOList
2655 int IRQNum; Interrupt Request number. Can be any of the following:
2656 0: Disable global interrupts
2665 Byte_t Frequency: A flag identifying the frequency
2666 of the periodic interrupt, can be any one of the following:
2667 FREQ_DIS - periodic interrupt disabled
2668 FREQ_137HZ - 137 Hertz
2669 FREQ_69HZ - 69 Hertz
2670 FREQ_34HZ - 34 Hertz
2671 FREQ_17HZ - 17 Hertz
2674 If IRQNum is set to 0 the Frequency parameter is
2675 overidden, it is forced to a value of FREQ_DIS.
2676 int PeriodicOnly: 1 if all interrupts except the periodic
2677 interrupt are to be blocked.
2678 0 is both the periodic interrupt and
2679 other channel interrupts are allowed.
2680 If IRQNum is set to 0 the PeriodicOnly parameter is
2681 overidden, it is forced to a value of 0.
2682 Return: int: Number of AIOPs on the controller, or CTLID_NULL if controller
2683 initialization failed.
2686 If periodic interrupts are to be disabled but AIOP interrupts
2687 are allowed, set Frequency to FREQ_DIS and PeriodicOnly to 0.
2689 If interrupts are to be completely disabled set IRQNum to 0.
2691 Setting Frequency to FREQ_DIS and PeriodicOnly to 1 is an
2692 invalid combination.
2694 This function performs initialization of global interrupt modes,
2695 but it does not actually enable global interrupts. To enable
2696 and disable global interrupts use functions sEnGlobalInt() and
2697 sDisGlobalInt(). Enabling of global interrupts is normally not
2698 done until all other initializations are complete.
2700 Even if interrupts are globally enabled, they must also be
2701 individually enabled for each channel that is to generate
2704 Warnings: No range checking on any of the parameters is done.
2706 No context switches are allowed while executing this function.
2708 After this function all AIOPs on the controller are disabled,
2709 they can be enabled with sEnAiop().
2711 static int sPCIInitController(CONTROLLER_T * CtlP, int CtlNum,
2712 ByteIO_t * AiopIOList, int AiopIOListSize,
2713 WordIO_t ConfigIO, int IRQNum, Byte_t Frequency,
2714 int PeriodicOnly, int altChanRingIndicator,
2720 CtlP->AltChanRingIndicator = altChanRingIndicator;
2721 CtlP->UPCIRingInd = UPCIRingInd;
2722 CtlP->CtlNum = CtlNum;
2723 CtlP->CtlID = CTLID_0001; /* controller release 1 */
2724 CtlP->BusType = isPCI; /* controller release 1 */
2728 CtlP->PCIIO = ConfigIO + _PCI_9030_INT_CTRL;
2729 CtlP->PCIIO2 = ConfigIO + _PCI_9030_GPIO_CTRL;
2730 CtlP->AiopIntrBits = upci_aiop_intr_bits;
2734 (WordIO_t) ((ByteIO_t) AiopIOList[0] + _PCI_INT_FUNC);
2735 CtlP->AiopIntrBits = aiop_intr_bits;
2738 sPCIControllerEOI(CtlP); /* clear EOI if warm init */
2741 for (i = 0; i < AiopIOListSize; i++) {
2743 CtlP->AiopIO[i] = (WordIO_t) io;
2744 CtlP->AiopIntChanIO[i] = io + _INT_CHAN;
2746 CtlP->AiopID[i] = sReadAiopID(io); /* read AIOP ID */
2747 if (CtlP->AiopID[i] == AIOPID_NULL) /* if AIOP does not exist */
2748 break; /* done looking for AIOPs */
2750 CtlP->AiopNumChan[i] = sReadAiopNumChan((WordIO_t) io); /* num channels in AIOP */
2751 sOutW((WordIO_t) io + _INDX_ADDR, _CLK_PRE); /* clock prescaler */
2752 sOutB(io + _INDX_DATA, sClockPrescale);
2753 CtlP->NumAiop++; /* bump count of AIOPs */
2756 if (CtlP->NumAiop == 0)
2759 return (CtlP->NumAiop);
2762 /***************************************************************************
2763 Function: sReadAiopID
2764 Purpose: Read the AIOP idenfication number directly from an AIOP.
2765 Call: sReadAiopID(io)
2766 ByteIO_t io: AIOP base I/O address
2767 Return: int: Flag AIOPID_XXXX if a valid AIOP is found, where X
2768 is replace by an identifying number.
2769 Flag AIOPID_NULL if no valid AIOP is found
2770 Warnings: No context switches are allowed while executing this function.
2773 static int sReadAiopID(ByteIO_t io)
2775 Byte_t AiopID; /* ID byte from AIOP */
2777 sOutB(io + _CMD_REG, RESET_ALL); /* reset AIOP */
2778 sOutB(io + _CMD_REG, 0x0);
2779 AiopID = sInW(io + _CHN_STAT0) & 0x07;
2782 else /* AIOP does not exist */
2786 /***************************************************************************
2787 Function: sReadAiopNumChan
2788 Purpose: Read the number of channels available in an AIOP directly from
2790 Call: sReadAiopNumChan(io)
2791 WordIO_t io: AIOP base I/O address
2792 Return: int: The number of channels available
2793 Comments: The number of channels is determined by write/reads from identical
2794 offsets within the SRAM address spaces for channels 0 and 4.
2795 If the channel 4 space is mirrored to channel 0 it is a 4 channel
2796 AIOP, otherwise it is an 8 channel.
2797 Warnings: No context switches are allowed while executing this function.
2799 static int sReadAiopNumChan(WordIO_t io)
2802 static Byte_t R[4] = { 0x00, 0x00, 0x34, 0x12 };
2804 /* write to chan 0 SRAM */
2805 sOutDW((DWordIO_t) io + _INDX_ADDR, *((DWord_t *) & R[0]));
2806 sOutW(io + _INDX_ADDR, 0); /* read from SRAM, chan 0 */
2807 x = sInW(io + _INDX_DATA);
2808 sOutW(io + _INDX_ADDR, 0x4000); /* read from SRAM, chan 4 */
2809 if (x != sInW(io + _INDX_DATA)) /* if different must be 8 chan */
2815 /***************************************************************************
2817 Purpose: Initialization of a channel and channel structure
2818 Call: sInitChan(CtlP,ChP,AiopNum,ChanNum)
2819 CONTROLLER_T *CtlP; Ptr to controller structure
2820 CHANNEL_T *ChP; Ptr to channel structure
2821 int AiopNum; AIOP number within controller
2822 int ChanNum; Channel number within AIOP
2823 Return: int: 1 if initialization succeeded, 0 if it fails because channel
2824 number exceeds number of channels available in AIOP.
2825 Comments: This function must be called before a channel can be used.
2826 Warnings: No range checking on any of the parameters is done.
2828 No context switches are allowed while executing this function.
2830 static int sInitChan(CONTROLLER_T * CtlP, CHANNEL_T * ChP, int AiopNum,
2841 if (ChanNum >= CtlP->AiopNumChan[AiopNum])
2842 return 0; /* exceeds num chans in AIOP */
2844 /* Channel, AIOP, and controller identifiers */
2846 ChP->ChanID = CtlP->AiopID[AiopNum];
2847 ChP->AiopNum = AiopNum;
2848 ChP->ChanNum = ChanNum;
2850 /* Global direct addresses */
2851 AiopIO = CtlP->AiopIO[AiopNum];
2852 ChP->Cmd = (ByteIO_t) AiopIO + _CMD_REG;
2853 ChP->IntChan = (ByteIO_t) AiopIO + _INT_CHAN;
2854 ChP->IntMask = (ByteIO_t) AiopIO + _INT_MASK;
2855 ChP->IndexAddr = (DWordIO_t) AiopIO + _INDX_ADDR;
2856 ChP->IndexData = AiopIO + _INDX_DATA;
2858 /* Channel direct addresses */
2859 ChIOOff = AiopIO + ChP->ChanNum * 2;
2860 ChP->TxRxData = ChIOOff + _TD0;
2861 ChP->ChanStat = ChIOOff + _CHN_STAT0;
2862 ChP->TxRxCount = ChIOOff + _FIFO_CNT0;
2863 ChP->IntID = (ByteIO_t) AiopIO + ChP->ChanNum + _INT_ID0;
2865 /* Initialize the channel from the RData array */
2866 for (i = 0; i < RDATASIZE; i += 4) {
2868 R[1] = RData[i + 1] + 0x10 * ChanNum;
2869 R[2] = RData[i + 2];
2870 R[3] = RData[i + 3];
2871 sOutDW(ChP->IndexAddr, *((DWord_t *) & R[0]));
2875 for (i = 0; i < RREGDATASIZE; i += 4) {
2876 ChR[i] = RRegData[i];
2877 ChR[i + 1] = RRegData[i + 1] + 0x10 * ChanNum;
2878 ChR[i + 2] = RRegData[i + 2];
2879 ChR[i + 3] = RRegData[i + 3];
2882 /* Indexed registers */
2883 ChOff = (Word_t) ChanNum *0x1000;
2885 if (sClockPrescale == 0x14)
2890 ChP->BaudDiv[0] = (Byte_t) (ChOff + _BAUD);
2891 ChP->BaudDiv[1] = (Byte_t) ((ChOff + _BAUD) >> 8);
2892 ChP->BaudDiv[2] = (Byte_t) brd9600;
2893 ChP->BaudDiv[3] = (Byte_t) (brd9600 >> 8);
2894 sOutDW(ChP->IndexAddr, *(DWord_t *) & ChP->BaudDiv[0]);
2896 ChP->TxControl[0] = (Byte_t) (ChOff + _TX_CTRL);
2897 ChP->TxControl[1] = (Byte_t) ((ChOff + _TX_CTRL) >> 8);
2898 ChP->TxControl[2] = 0;
2899 ChP->TxControl[3] = 0;
2900 sOutDW(ChP->IndexAddr, *(DWord_t *) & ChP->TxControl[0]);
2902 ChP->RxControl[0] = (Byte_t) (ChOff + _RX_CTRL);
2903 ChP->RxControl[1] = (Byte_t) ((ChOff + _RX_CTRL) >> 8);
2904 ChP->RxControl[2] = 0;
2905 ChP->RxControl[3] = 0;
2906 sOutDW(ChP->IndexAddr, *(DWord_t *) & ChP->RxControl[0]);
2908 ChP->TxEnables[0] = (Byte_t) (ChOff + _TX_ENBLS);
2909 ChP->TxEnables[1] = (Byte_t) ((ChOff + _TX_ENBLS) >> 8);
2910 ChP->TxEnables[2] = 0;
2911 ChP->TxEnables[3] = 0;
2912 sOutDW(ChP->IndexAddr, *(DWord_t *) & ChP->TxEnables[0]);
2914 ChP->TxCompare[0] = (Byte_t) (ChOff + _TXCMP1);
2915 ChP->TxCompare[1] = (Byte_t) ((ChOff + _TXCMP1) >> 8);
2916 ChP->TxCompare[2] = 0;
2917 ChP->TxCompare[3] = 0;
2918 sOutDW(ChP->IndexAddr, *(DWord_t *) & ChP->TxCompare[0]);
2920 ChP->TxReplace1[0] = (Byte_t) (ChOff + _TXREP1B1);
2921 ChP->TxReplace1[1] = (Byte_t) ((ChOff + _TXREP1B1) >> 8);
2922 ChP->TxReplace1[2] = 0;
2923 ChP->TxReplace1[3] = 0;
2924 sOutDW(ChP->IndexAddr, *(DWord_t *) & ChP->TxReplace1[0]);
2926 ChP->TxReplace2[0] = (Byte_t) (ChOff + _TXREP2);
2927 ChP->TxReplace2[1] = (Byte_t) ((ChOff + _TXREP2) >> 8);
2928 ChP->TxReplace2[2] = 0;
2929 ChP->TxReplace2[3] = 0;
2930 sOutDW(ChP->IndexAddr, *(DWord_t *) & ChP->TxReplace2[0]);
2932 ChP->TxFIFOPtrs = ChOff + _TXF_OUTP;
2933 ChP->TxFIFO = ChOff + _TX_FIFO;
2935 sOutB(ChP->Cmd, (Byte_t) ChanNum | RESTXFCNT); /* apply reset Tx FIFO count */
2936 sOutB(ChP->Cmd, (Byte_t) ChanNum); /* remove reset Tx FIFO count */
2937 sOutW((WordIO_t) ChP->IndexAddr, ChP->TxFIFOPtrs); /* clear Tx in/out ptrs */
2938 sOutW(ChP->IndexData, 0);
2939 ChP->RxFIFOPtrs = ChOff + _RXF_OUTP;
2940 ChP->RxFIFO = ChOff + _RX_FIFO;
2942 sOutB(ChP->Cmd, (Byte_t) ChanNum | RESRXFCNT); /* apply reset Rx FIFO count */
2943 sOutB(ChP->Cmd, (Byte_t) ChanNum); /* remove reset Rx FIFO count */
2944 sOutW((WordIO_t) ChP->IndexAddr, ChP->RxFIFOPtrs); /* clear Rx out ptr */
2945 sOutW(ChP->IndexData, 0);
2946 sOutW((WordIO_t) ChP->IndexAddr, ChP->RxFIFOPtrs + 2); /* clear Rx in ptr */
2947 sOutW(ChP->IndexData, 0);
2948 ChP->TxPrioCnt = ChOff + _TXP_CNT;
2949 sOutW((WordIO_t) ChP->IndexAddr, ChP->TxPrioCnt);
2950 sOutB(ChP->IndexData, 0);
2951 ChP->TxPrioPtr = ChOff + _TXP_PNTR;
2952 sOutW((WordIO_t) ChP->IndexAddr, ChP->TxPrioPtr);
2953 sOutB(ChP->IndexData, 0);
2954 ChP->TxPrioBuf = ChOff + _TXP_BUF;
2955 sEnRxProcessor(ChP); /* start the Rx processor */
2960 /***************************************************************************
2961 Function: sStopRxProcessor
2962 Purpose: Stop the receive processor from processing a channel.
2963 Call: sStopRxProcessor(ChP)
2964 CHANNEL_T *ChP; Ptr to channel structure
2966 Comments: The receive processor can be started again with sStartRxProcessor().
2967 This function causes the receive processor to skip over the
2968 stopped channel. It does not stop it from processing other channels.
2970 Warnings: No context switches are allowed while executing this function.
2972 Do not leave the receive processor stopped for more than one
2975 After calling this function a delay of 4 uS is required to ensure
2976 that the receive processor is no longer processing this channel.
2978 static void sStopRxProcessor(CHANNEL_T * ChP)
2986 sOutDW(ChP->IndexAddr, *(DWord_t *) & R[0]);
2989 /***************************************************************************
2990 Function: sFlushRxFIFO
2991 Purpose: Flush the Rx FIFO
2992 Call: sFlushRxFIFO(ChP)
2993 CHANNEL_T *ChP; Ptr to channel structure
2995 Comments: To prevent data from being enqueued or dequeued in the Tx FIFO
2996 while it is being flushed the receive processor is stopped
2997 and the transmitter is disabled. After these operations a
2998 4 uS delay is done before clearing the pointers to allow
2999 the receive processor to stop. These items are handled inside
3001 Warnings: No context switches are allowed while executing this function.
3003 static void sFlushRxFIFO(CHANNEL_T * ChP)
3006 Byte_t Ch; /* channel number within AIOP */
3007 int RxFIFOEnabled; /* 1 if Rx FIFO enabled */
3009 if (sGetRxCnt(ChP) == 0) /* Rx FIFO empty */
3010 return; /* don't need to flush */
3013 if (ChP->R[0x32] == 0x08) { /* Rx FIFO is enabled */
3015 sDisRxFIFO(ChP); /* disable it */
3016 for (i = 0; i < 2000 / 200; i++) /* delay 2 uS to allow proc to disable FIFO */
3017 sInB(ChP->IntChan); /* depends on bus i/o timing */
3019 sGetChanStatus(ChP); /* clear any pending Rx errors in chan stat */
3020 Ch = (Byte_t) sGetChanNum(ChP);
3021 sOutB(ChP->Cmd, Ch | RESRXFCNT); /* apply reset Rx FIFO count */
3022 sOutB(ChP->Cmd, Ch); /* remove reset Rx FIFO count */
3023 sOutW((WordIO_t) ChP->IndexAddr, ChP->RxFIFOPtrs); /* clear Rx out ptr */
3024 sOutW(ChP->IndexData, 0);
3025 sOutW((WordIO_t) ChP->IndexAddr, ChP->RxFIFOPtrs + 2); /* clear Rx in ptr */
3026 sOutW(ChP->IndexData, 0);
3028 sEnRxFIFO(ChP); /* enable Rx FIFO */
3031 /***************************************************************************
3032 Function: sFlushTxFIFO
3033 Purpose: Flush the Tx FIFO
3034 Call: sFlushTxFIFO(ChP)
3035 CHANNEL_T *ChP; Ptr to channel structure
3037 Comments: To prevent data from being enqueued or dequeued in the Tx FIFO
3038 while it is being flushed the receive processor is stopped
3039 and the transmitter is disabled. After these operations a
3040 4 uS delay is done before clearing the pointers to allow
3041 the receive processor to stop. These items are handled inside
3043 Warnings: No context switches are allowed while executing this function.
3045 static void sFlushTxFIFO(CHANNEL_T * ChP)
3048 Byte_t Ch; /* channel number within AIOP */
3049 int TxEnabled; /* 1 if transmitter enabled */
3051 if (sGetTxCnt(ChP) == 0) /* Tx FIFO empty */
3052 return; /* don't need to flush */
3055 if (ChP->TxControl[3] & TX_ENABLE) {
3057 sDisTransmit(ChP); /* disable transmitter */
3059 sStopRxProcessor(ChP); /* stop Rx processor */
3060 for (i = 0; i < 4000 / 200; i++) /* delay 4 uS to allow proc to stop */
3061 sInB(ChP->IntChan); /* depends on bus i/o timing */
3062 Ch = (Byte_t) sGetChanNum(ChP);
3063 sOutB(ChP->Cmd, Ch | RESTXFCNT); /* apply reset Tx FIFO count */
3064 sOutB(ChP->Cmd, Ch); /* remove reset Tx FIFO count */
3065 sOutW((WordIO_t) ChP->IndexAddr, ChP->TxFIFOPtrs); /* clear Tx in/out ptrs */
3066 sOutW(ChP->IndexData, 0);
3068 sEnTransmit(ChP); /* enable transmitter */
3069 sStartRxProcessor(ChP); /* restart Rx processor */
3072 /***************************************************************************
3073 Function: sWriteTxPrioByte
3074 Purpose: Write a byte of priority transmit data to a channel
3075 Call: sWriteTxPrioByte(ChP,Data)
3076 CHANNEL_T *ChP; Ptr to channel structure
3077 Byte_t Data; The transmit data byte
3079 Return: int: 1 if the bytes is successfully written, otherwise 0.
3081 Comments: The priority byte is transmitted before any data in the Tx FIFO.
3083 Warnings: No context switches are allowed while executing this function.
3085 static int sWriteTxPrioByte(CHANNEL_T * ChP, Byte_t Data)
3087 Byte_t DWBuf[4]; /* buffer for double word writes */
3088 Word_t *WordPtr; /* must be far because Win SS != DS */
3089 register DWordIO_t IndexAddr;
3091 if (sGetTxCnt(ChP) > 1) { /* write it to Tx priority buffer */
3092 IndexAddr = ChP->IndexAddr;
3093 sOutW((WordIO_t) IndexAddr, ChP->TxPrioCnt); /* get priority buffer status */
3094 if (sInB((ByteIO_t) ChP->IndexData) & PRI_PEND) /* priority buffer busy */
3095 return (0); /* nothing sent */
3097 WordPtr = (Word_t *) (&DWBuf[0]);
3098 *WordPtr = ChP->TxPrioBuf; /* data byte address */
3100 DWBuf[2] = Data; /* data byte value */
3101 sOutDW(IndexAddr, *((DWord_t *) (&DWBuf[0]))); /* write it out */
3103 *WordPtr = ChP->TxPrioCnt; /* Tx priority count address */
3105 DWBuf[2] = PRI_PEND + 1; /* indicate 1 byte pending */
3106 DWBuf[3] = 0; /* priority buffer pointer */
3107 sOutDW(IndexAddr, *((DWord_t *) (&DWBuf[0]))); /* write it out */
3108 } else { /* write it to Tx FIFO */
3110 sWriteTxByte(sGetTxRxDataIO(ChP), Data);
3112 return (1); /* 1 byte sent */
3115 /***************************************************************************
3116 Function: sEnInterrupts
3117 Purpose: Enable one or more interrupts for a channel
3118 Call: sEnInterrupts(ChP,Flags)
3119 CHANNEL_T *ChP; Ptr to channel structure
3120 Word_t Flags: Interrupt enable flags, can be any combination
3121 of the following flags:
3122 TXINT_EN: Interrupt on Tx FIFO empty
3123 RXINT_EN: Interrupt on Rx FIFO at trigger level (see
3125 SRCINT_EN: Interrupt on SRC (Special Rx Condition)
3126 MCINT_EN: Interrupt on modem input change
3127 CHANINT_EN: Allow channel interrupt signal to the AIOP's
3128 Interrupt Channel Register.
3130 Comments: If an interrupt enable flag is set in Flags, that interrupt will be
3131 enabled. If an interrupt enable flag is not set in Flags, that
3132 interrupt will not be changed. Interrupts can be disabled with
3133 function sDisInterrupts().
3135 This function sets the appropriate bit for the channel in the AIOP's
3136 Interrupt Mask Register if the CHANINT_EN flag is set. This allows
3137 this channel's bit to be set in the AIOP's Interrupt Channel Register.
3139 Interrupts must also be globally enabled before channel interrupts
3140 will be passed on to the host. This is done with function
3143 In some cases it may be desirable to disable interrupts globally but
3144 enable channel interrupts. This would allow the global interrupt
3145 status register to be used to determine which AIOPs need service.
3147 static void sEnInterrupts(CHANNEL_T * ChP, Word_t Flags)
3149 Byte_t Mask; /* Interrupt Mask Register */
3151 ChP->RxControl[2] |=
3152 ((Byte_t) Flags & (RXINT_EN | SRCINT_EN | MCINT_EN));
3154 sOutDW(ChP->IndexAddr, *(DWord_t *) & ChP->RxControl[0]);
3156 ChP->TxControl[2] |= ((Byte_t) Flags & TXINT_EN);
3158 sOutDW(ChP->IndexAddr, *(DWord_t *) & ChP->TxControl[0]);
3160 if (Flags & CHANINT_EN) {
3161 Mask = sInB(ChP->IntMask) | sBitMapSetTbl[ChP->ChanNum];
3162 sOutB(ChP->IntMask, Mask);
3166 /***************************************************************************
3167 Function: sDisInterrupts
3168 Purpose: Disable one or more interrupts for a channel
3169 Call: sDisInterrupts(ChP,Flags)
3170 CHANNEL_T *ChP; Ptr to channel structure
3171 Word_t Flags: Interrupt flags, can be any combination
3172 of the following flags:
3173 TXINT_EN: Interrupt on Tx FIFO empty
3174 RXINT_EN: Interrupt on Rx FIFO at trigger level (see
3176 SRCINT_EN: Interrupt on SRC (Special Rx Condition)
3177 MCINT_EN: Interrupt on modem input change
3178 CHANINT_EN: Disable channel interrupt signal to the
3179 AIOP's Interrupt Channel Register.
3181 Comments: If an interrupt flag is set in Flags, that interrupt will be
3182 disabled. If an interrupt flag is not set in Flags, that
3183 interrupt will not be changed. Interrupts can be enabled with
3184 function sEnInterrupts().
3186 This function clears the appropriate bit for the channel in the AIOP's
3187 Interrupt Mask Register if the CHANINT_EN flag is set. This blocks
3188 this channel's bit from being set in the AIOP's Interrupt Channel
3191 static void sDisInterrupts(CHANNEL_T * ChP, Word_t Flags)
3193 Byte_t Mask; /* Interrupt Mask Register */
3195 ChP->RxControl[2] &=
3196 ~((Byte_t) Flags & (RXINT_EN | SRCINT_EN | MCINT_EN));
3197 sOutDW(ChP->IndexAddr, *(DWord_t *) & ChP->RxControl[0]);
3198 ChP->TxControl[2] &= ~((Byte_t) Flags & TXINT_EN);
3199 sOutDW(ChP->IndexAddr, *(DWord_t *) & ChP->TxControl[0]);
3201 if (Flags & CHANINT_EN) {
3202 Mask = sInB(ChP->IntMask) & sBitMapClrTbl[ChP->ChanNum];
3203 sOutB(ChP->IntMask, Mask);
3207 static void sSetInterfaceMode(CHANNEL_T * ChP, Byte_t mode)
3209 sOutB(ChP->CtlP->AiopIO[2], (mode & 0x18) | ChP->ChanNum);
3213 * Not an official SSCI function, but how to reset RocketModems.
3216 static void sModemReset(CONTROLLER_T * CtlP, int chan, int on)
3221 addr = CtlP->AiopIO[0] + 0x400;
3222 val = sInB(CtlP->MReg3IO);
3223 /* if AIOP[1] is not enabled, enable it */
3224 if ((val & 2) == 0) {
3225 val = sInB(CtlP->MReg2IO);
3226 sOutB(CtlP->MReg2IO, (val & 0xfc) | (1 & 0x03));
3227 sOutB(CtlP->MBaseIO, (unsigned char) (addr >> 6));
3233 sOutB(addr + chan, 0); /* apply or remove reset */
3238 * Not an official SSCI function, but how to reset RocketModems.
3241 static void sPCIModemReset(CONTROLLER_T * CtlP, int chan, int on)
3245 addr = CtlP->AiopIO[0] + 0x40; /* 2nd AIOP */
3248 sOutB(addr + chan, 0); /* apply or remove reset */
3251 /* Resets the speaker controller on RocketModem II and III devices */
3252 static void rmSpeakerReset(CONTROLLER_T * CtlP, unsigned long model)
3256 /* RocketModem II speaker control is at the 8th port location of offset 0x40 */
3257 if ((model == MODEL_RP4M) || (model == MODEL_RP6M)) {
3258 addr = CtlP->AiopIO[0] + 0x4F;
3262 /* RocketModem III speaker control is at the 1st port location of offset 0x80 */
3263 if ((model == MODEL_UPCI_RM3_8PORT)
3264 || (model == MODEL_UPCI_RM3_4PORT)) {
3265 addr = CtlP->AiopIO[0] + 0x88;
3270 /* Returns the line number given the controller (board), aiop and channel number */
3271 static unsigned char GetLineNumber(int ctrl, int aiop, int ch)
3273 return lineNumbers[(ctrl << 5) | (aiop << 3) | ch];
3277 * Stores the line number associated with a given controller (board), aiop
3278 * and channel number.
3279 * Returns: The line number assigned
3281 static unsigned char SetLineNumber(int ctrl, int aiop, int ch)
3283 lineNumbers[(ctrl << 5) | (aiop << 3) | ch] = nextLineNumber++;
3284 return (nextLineNumber - 1);