2 * RocketPort device driver for Linux
4 * Written by Theodore Ts'o, 1995, 1996, 1997, 1998, 1999, 2000.
6 * Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2003 by Comtrol, Inc.
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of the
11 * License, or (at your option) any later version.
13 * This program is distributed in the hope that it will be useful, but
14 * WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
24 * Kernel Synchronization:
26 * This driver has 2 kernel control paths - exception handlers (calls into the driver
27 * from user mode) and the timer bottom half (tasklet). This is a polled driver, interrupts
31 * - rp_table[], accessed through passed "info" pointers, is a global (static) array of
32 * serial port state information and the xmit_buf circular buffer. Protected by
33 * a per port spinlock.
34 * - xmit_flags[], an array of ints indexed by line (port) number, indicating that there
35 * is data to be transmitted. Protected by atomic bit operations.
36 * - rp_num_ports, int indicating number of open ports, protected by atomic operations.
38 * rp_write() and rp_write_char() functions use a per port semaphore to protect against
39 * simultaneous access to the same port by more than one process.
42 /****** Defines ******/
43 #define ROCKET_PARANOIA_CHECK
44 #define ROCKET_DISABLE_SIMUSAGE
46 #undef ROCKET_SOFT_FLOW
47 #undef ROCKET_DEBUG_OPEN
48 #undef ROCKET_DEBUG_INTR
49 #undef ROCKET_DEBUG_WRITE
50 #undef ROCKET_DEBUG_FLOW
51 #undef ROCKET_DEBUG_THROTTLE
52 #undef ROCKET_DEBUG_WAIT_UNTIL_SENT
53 #undef ROCKET_DEBUG_RECEIVE
54 #undef ROCKET_DEBUG_HANGUP
56 #undef ROCKET_DEBUG_IO
58 #define POLL_PERIOD HZ/100 /* Polling period .01 seconds (10ms) */
60 /****** Kernel includes ******/
62 #include <linux/module.h>
63 #include <linux/errno.h>
64 #include <linux/major.h>
65 #include <linux/kernel.h>
66 #include <linux/signal.h>
67 #include <linux/slab.h>
69 #include <linux/sched.h>
70 #include <linux/timer.h>
71 #include <linux/interrupt.h>
72 #include <linux/tty.h>
73 #include <linux/tty_driver.h>
74 #include <linux/tty_flip.h>
75 #include <linux/string.h>
76 #include <linux/fcntl.h>
77 #include <linux/ptrace.h>
78 #include <linux/mutex.h>
79 #include <linux/ioport.h>
80 #include <linux/delay.h>
81 #include <linux/completion.h>
82 #include <linux/wait.h>
83 #include <linux/pci.h>
84 #include <asm/uaccess.h>
85 #include <asm/atomic.h>
86 #include <asm/unaligned.h>
87 #include <linux/bitops.h>
88 #include <linux/spinlock.h>
89 #include <linux/init.h>
91 /****** RocketPort includes ******/
93 #include "rocket_int.h"
96 #define ROCKET_VERSION "2.09"
97 #define ROCKET_DATE "12-June-2003"
99 /****** RocketPort Local Variables ******/
101 static void rp_do_poll(unsigned long dummy);
103 static struct tty_driver *rocket_driver;
105 static struct rocket_version driver_version = {
106 ROCKET_VERSION, ROCKET_DATE
109 static struct r_port *rp_table[MAX_RP_PORTS]; /* The main repository of serial port state information. */
110 static unsigned int xmit_flags[NUM_BOARDS]; /* Bit significant, indicates port had data to transmit. */
111 /* eg. Bit 0 indicates port 0 has xmit data, ... */
112 static atomic_t rp_num_ports_open; /* Number of serial ports open */
113 static DEFINE_TIMER(rocket_timer, rp_do_poll, 0, 0);
115 static unsigned long board1; /* ISA addresses, retrieved from rocketport.conf */
116 static unsigned long board2;
117 static unsigned long board3;
118 static unsigned long board4;
119 static unsigned long controller;
120 static int support_low_speed;
121 static unsigned long modem1;
122 static unsigned long modem2;
123 static unsigned long modem3;
124 static unsigned long modem4;
125 static unsigned long pc104_1[8];
126 static unsigned long pc104_2[8];
127 static unsigned long pc104_3[8];
128 static unsigned long pc104_4[8];
129 static unsigned long *pc104[4] = { pc104_1, pc104_2, pc104_3, pc104_4 };
131 static int rp_baud_base[NUM_BOARDS]; /* Board config info (Someday make a per-board structure) */
132 static unsigned long rcktpt_io_addr[NUM_BOARDS];
133 static int rcktpt_type[NUM_BOARDS];
134 static int is_PCI[NUM_BOARDS];
135 static rocketModel_t rocketModel[NUM_BOARDS];
136 static int max_board;
139 * The following arrays define the interrupt bits corresponding to each AIOP.
140 * These bits are different between the ISA and regular PCI boards and the
141 * Universal PCI boards.
144 static Word_t aiop_intr_bits[AIOP_CTL_SIZE] = {
151 static Word_t upci_aiop_intr_bits[AIOP_CTL_SIZE] = {
152 UPCI_AIOP_INTR_BIT_0,
153 UPCI_AIOP_INTR_BIT_1,
154 UPCI_AIOP_INTR_BIT_2,
158 static Byte_t RData[RDATASIZE] = {
159 0x00, 0x09, 0xf6, 0x82,
160 0x02, 0x09, 0x86, 0xfb,
161 0x04, 0x09, 0x00, 0x0a,
162 0x06, 0x09, 0x01, 0x0a,
163 0x08, 0x09, 0x8a, 0x13,
164 0x0a, 0x09, 0xc5, 0x11,
165 0x0c, 0x09, 0x86, 0x85,
166 0x0e, 0x09, 0x20, 0x0a,
167 0x10, 0x09, 0x21, 0x0a,
168 0x12, 0x09, 0x41, 0xff,
169 0x14, 0x09, 0x82, 0x00,
170 0x16, 0x09, 0x82, 0x7b,
171 0x18, 0x09, 0x8a, 0x7d,
172 0x1a, 0x09, 0x88, 0x81,
173 0x1c, 0x09, 0x86, 0x7a,
174 0x1e, 0x09, 0x84, 0x81,
175 0x20, 0x09, 0x82, 0x7c,
176 0x22, 0x09, 0x0a, 0x0a
179 static Byte_t RRegData[RREGDATASIZE] = {
180 0x00, 0x09, 0xf6, 0x82, /* 00: Stop Rx processor */
181 0x08, 0x09, 0x8a, 0x13, /* 04: Tx software flow control */
182 0x0a, 0x09, 0xc5, 0x11, /* 08: XON char */
183 0x0c, 0x09, 0x86, 0x85, /* 0c: XANY */
184 0x12, 0x09, 0x41, 0xff, /* 10: Rx mask char */
185 0x14, 0x09, 0x82, 0x00, /* 14: Compare/Ignore #0 */
186 0x16, 0x09, 0x82, 0x7b, /* 18: Compare #1 */
187 0x18, 0x09, 0x8a, 0x7d, /* 1c: Compare #2 */
188 0x1a, 0x09, 0x88, 0x81, /* 20: Interrupt #1 */
189 0x1c, 0x09, 0x86, 0x7a, /* 24: Ignore/Replace #1 */
190 0x1e, 0x09, 0x84, 0x81, /* 28: Interrupt #2 */
191 0x20, 0x09, 0x82, 0x7c, /* 2c: Ignore/Replace #2 */
192 0x22, 0x09, 0x0a, 0x0a /* 30: Rx FIFO Enable */
195 static CONTROLLER_T sController[CTL_SIZE] = {
196 {-1, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, {0, 0, 0, 0},
197 {0, 0, 0, 0}, {-1, -1, -1, -1}, {0, 0, 0, 0}},
198 {-1, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, {0, 0, 0, 0},
199 {0, 0, 0, 0}, {-1, -1, -1, -1}, {0, 0, 0, 0}},
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}}
206 static Byte_t sBitMapClrTbl[8] = {
207 0xfe, 0xfd, 0xfb, 0xf7, 0xef, 0xdf, 0xbf, 0x7f
210 static Byte_t sBitMapSetTbl[8] = {
211 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80
214 static int sClockPrescale = 0x14;
217 * Line number is the ttySIx number (x), the Minor number. We
218 * assign them sequentially, starting at zero. The following
219 * array keeps track of the line number assigned to a given board/aiop/channel.
221 static unsigned char lineNumbers[MAX_RP_PORTS];
222 static unsigned long nextLineNumber;
224 /***** RocketPort Static Prototypes *********/
225 static int __init init_ISA(int i);
226 static void rp_wait_until_sent(struct tty_struct *tty, int timeout);
227 static void rp_flush_buffer(struct tty_struct *tty);
228 static void rmSpeakerReset(CONTROLLER_T * CtlP, unsigned long model);
229 static unsigned char GetLineNumber(int ctrl, int aiop, int ch);
230 static unsigned char SetLineNumber(int ctrl, int aiop, int ch);
231 static void rp_start(struct tty_struct *tty);
232 static int sInitChan(CONTROLLER_T * CtlP, CHANNEL_T * ChP, int AiopNum,
234 static void sSetInterfaceMode(CHANNEL_T * ChP, Byte_t mode);
235 static void sFlushRxFIFO(CHANNEL_T * ChP);
236 static void sFlushTxFIFO(CHANNEL_T * ChP);
237 static void sEnInterrupts(CHANNEL_T * ChP, Word_t Flags);
238 static void sDisInterrupts(CHANNEL_T * ChP, Word_t Flags);
239 static void sModemReset(CONTROLLER_T * CtlP, int chan, int on);
240 static void sPCIModemReset(CONTROLLER_T * CtlP, int chan, int on);
241 static int sWriteTxPrioByte(CHANNEL_T * ChP, Byte_t Data);
242 static int sPCIInitController(CONTROLLER_T * CtlP, int CtlNum,
243 ByteIO_t * AiopIOList, int AiopIOListSize,
244 WordIO_t ConfigIO, int IRQNum, Byte_t Frequency,
245 int PeriodicOnly, int altChanRingIndicator,
247 static int sInitController(CONTROLLER_T * CtlP, int CtlNum, ByteIO_t MudbacIO,
248 ByteIO_t * AiopIOList, int AiopIOListSize,
249 int IRQNum, Byte_t Frequency, int PeriodicOnly);
250 static int sReadAiopID(ByteIO_t io);
251 static int sReadAiopNumChan(WordIO_t io);
253 MODULE_AUTHOR("Theodore Ts'o");
254 MODULE_DESCRIPTION("Comtrol RocketPort driver");
255 module_param(board1, ulong, 0);
256 MODULE_PARM_DESC(board1, "I/O port for (ISA) board #1");
257 module_param(board2, ulong, 0);
258 MODULE_PARM_DESC(board2, "I/O port for (ISA) board #2");
259 module_param(board3, ulong, 0);
260 MODULE_PARM_DESC(board3, "I/O port for (ISA) board #3");
261 module_param(board4, ulong, 0);
262 MODULE_PARM_DESC(board4, "I/O port for (ISA) board #4");
263 module_param(controller, ulong, 0);
264 MODULE_PARM_DESC(controller, "I/O port for (ISA) rocketport controller");
265 module_param(support_low_speed, bool, 0);
266 MODULE_PARM_DESC(support_low_speed, "1 means support 50 baud, 0 means support 460400 baud");
267 module_param(modem1, ulong, 0);
268 MODULE_PARM_DESC(modem1, "1 means (ISA) board #1 is a RocketModem");
269 module_param(modem2, ulong, 0);
270 MODULE_PARM_DESC(modem2, "1 means (ISA) board #2 is a RocketModem");
271 module_param(modem3, ulong, 0);
272 MODULE_PARM_DESC(modem3, "1 means (ISA) board #3 is a RocketModem");
273 module_param(modem4, ulong, 0);
274 MODULE_PARM_DESC(modem4, "1 means (ISA) board #4 is a RocketModem");
275 module_param_array(pc104_1, ulong, NULL, 0);
276 MODULE_PARM_DESC(pc104_1, "set interface types for ISA(PC104) board #1 (e.g. pc104_1=232,232,485,485,...");
277 module_param_array(pc104_2, ulong, NULL, 0);
278 MODULE_PARM_DESC(pc104_2, "set interface types for ISA(PC104) board #2 (e.g. pc104_2=232,232,485,485,...");
279 module_param_array(pc104_3, ulong, NULL, 0);
280 MODULE_PARM_DESC(pc104_3, "set interface types for ISA(PC104) board #3 (e.g. pc104_3=232,232,485,485,...");
281 module_param_array(pc104_4, ulong, NULL, 0);
282 MODULE_PARM_DESC(pc104_4, "set interface types for ISA(PC104) board #4 (e.g. pc104_4=232,232,485,485,...");
284 static int rp_init(void);
285 static void rp_cleanup_module(void);
287 module_init(rp_init);
288 module_exit(rp_cleanup_module);
291 MODULE_LICENSE("Dual BSD/GPL");
293 /*************************************************************************/
294 /* Module code starts here */
296 static inline int rocket_paranoia_check(struct r_port *info,
299 #ifdef ROCKET_PARANOIA_CHECK
302 if (info->magic != RPORT_MAGIC) {
303 printk(KERN_WARNING "Warning: bad magic number for rocketport "
304 "struct in %s\n", routine);
312 /* Serial port receive data function. Called (from timer poll) when an AIOPIC signals
313 * that receive data is present on a serial port. Pulls data from FIFO, moves it into the
316 static void rp_do_receive(struct r_port *info,
317 struct tty_struct *tty,
318 CHANNEL_t * cp, unsigned int ChanStatus)
320 unsigned int CharNStat;
321 int ToRecv, wRecv, space;
324 ToRecv = sGetRxCnt(cp);
325 #ifdef ROCKET_DEBUG_INTR
326 printk(KERN_INFO "rp_do_receive(%d)...\n", ToRecv);
332 * if status indicates there are errored characters in the
333 * FIFO, then enter status mode (a word in FIFO holds
334 * character and status).
336 if (ChanStatus & (RXFOVERFL | RXBREAK | RXFRAME | RXPARITY)) {
337 if (!(ChanStatus & STATMODE)) {
338 #ifdef ROCKET_DEBUG_RECEIVE
339 printk(KERN_INFO "Entering STATMODE...\n");
341 ChanStatus |= STATMODE;
347 * if we previously entered status mode, then read down the
348 * FIFO one word at a time, pulling apart the character and
349 * the status. Update error counters depending on status
351 if (ChanStatus & STATMODE) {
352 #ifdef ROCKET_DEBUG_RECEIVE
353 printk(KERN_INFO "Ignore %x, read %x...\n",
354 info->ignore_status_mask, info->read_status_mask);
359 CharNStat = sInW(sGetTxRxDataIO(cp));
360 #ifdef ROCKET_DEBUG_RECEIVE
361 printk(KERN_INFO "%x...\n", CharNStat);
363 if (CharNStat & STMBREAKH)
364 CharNStat &= ~(STMFRAMEH | STMPARITYH);
365 if (CharNStat & info->ignore_status_mask) {
369 CharNStat &= info->read_status_mask;
370 if (CharNStat & STMBREAKH)
372 else if (CharNStat & STMPARITYH)
374 else if (CharNStat & STMFRAMEH)
376 else if (CharNStat & STMRCVROVRH)
380 tty_insert_flip_char(tty, CharNStat & 0xff, flag);
385 * after we've emptied the FIFO in status mode, turn
386 * status mode back off
388 if (sGetRxCnt(cp) == 0) {
389 #ifdef ROCKET_DEBUG_RECEIVE
390 printk(KERN_INFO "Status mode off.\n");
392 sDisRxStatusMode(cp);
396 * we aren't in status mode, so read down the FIFO two
397 * characters at time by doing repeated word IO
400 space = tty_prepare_flip_string(tty, &cbuf, ToRecv);
401 if (space < ToRecv) {
402 #ifdef ROCKET_DEBUG_RECEIVE
403 printk(KERN_INFO "rp_do_receive:insufficient space ToRecv=%d space=%d\n", ToRecv, space);
411 sInStrW(sGetTxRxDataIO(cp), (unsigned short *) cbuf, wRecv);
413 cbuf[ToRecv - 1] = sInB(sGetTxRxDataIO(cp));
415 /* Push the data up to the tty layer */
416 tty_flip_buffer_push(tty);
420 * Serial port transmit data function. Called from the timer polling loop as a
421 * result of a bit set in xmit_flags[], indicating data (from the tty layer) is ready
422 * to be sent out the serial port. Data is buffered in rp_table[line].xmit_buf, it is
423 * moved to the port's xmit FIFO. *info is critical data, protected by spinlocks.
425 static void rp_do_transmit(struct r_port *info)
428 CHANNEL_t *cp = &info->channel;
429 struct tty_struct *tty;
432 #ifdef ROCKET_DEBUG_INTR
433 printk(KERN_DEBUG "%s\n", __func__);
438 printk(KERN_WARNING "rp: WARNING %s called with "
439 "info->tty==NULL\n", __func__);
440 clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
444 spin_lock_irqsave(&info->slock, flags);
446 info->xmit_fifo_room = TXFIFO_SIZE - sGetTxCnt(cp);
448 /* Loop sending data to FIFO until done or FIFO full */
450 if (tty->stopped || tty->hw_stopped)
452 c = min(info->xmit_fifo_room, min(info->xmit_cnt, XMIT_BUF_SIZE - info->xmit_tail));
453 if (c <= 0 || info->xmit_fifo_room <= 0)
455 sOutStrW(sGetTxRxDataIO(cp), (unsigned short *) (info->xmit_buf + info->xmit_tail), c / 2);
457 sOutB(sGetTxRxDataIO(cp), info->xmit_buf[info->xmit_tail + c - 1]);
458 info->xmit_tail += c;
459 info->xmit_tail &= XMIT_BUF_SIZE - 1;
461 info->xmit_fifo_room -= c;
462 #ifdef ROCKET_DEBUG_INTR
463 printk(KERN_INFO "tx %d chars...\n", c);
467 if (info->xmit_cnt == 0)
468 clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
470 if (info->xmit_cnt < WAKEUP_CHARS) {
472 #ifdef ROCKETPORT_HAVE_POLL_WAIT
473 wake_up_interruptible(&tty->poll_wait);
477 spin_unlock_irqrestore(&info->slock, flags);
479 #ifdef ROCKET_DEBUG_INTR
480 printk(KERN_DEBUG "(%d,%d,%d,%d)...\n", info->xmit_cnt, info->xmit_head,
481 info->xmit_tail, info->xmit_fifo_room);
486 * Called when a serial port signals it has read data in it's RX FIFO.
487 * It checks what interrupts are pending and services them, including
488 * receiving serial data.
490 static void rp_handle_port(struct r_port *info)
493 struct tty_struct *tty;
494 unsigned int IntMask, ChanStatus;
499 if ((info->flags & ROCKET_INITIALIZED) == 0) {
500 printk(KERN_WARNING "rp: WARNING: rp_handle_port called with "
501 "info->flags & NOT_INIT\n");
505 printk(KERN_WARNING "rp: WARNING: rp_handle_port called with "
506 "info->tty==NULL\n");
512 IntMask = sGetChanIntID(cp) & info->intmask;
513 #ifdef ROCKET_DEBUG_INTR
514 printk(KERN_INFO "rp_interrupt %02x...\n", IntMask);
516 ChanStatus = sGetChanStatus(cp);
517 if (IntMask & RXF_TRIG) { /* Rx FIFO trigger level */
518 rp_do_receive(info, tty, cp, ChanStatus);
520 if (IntMask & DELTA_CD) { /* CD change */
521 #if (defined(ROCKET_DEBUG_OPEN) || defined(ROCKET_DEBUG_INTR) || defined(ROCKET_DEBUG_HANGUP))
522 printk(KERN_INFO "ttyR%d CD now %s...\n", info->line,
523 (ChanStatus & CD_ACT) ? "on" : "off");
525 if (!(ChanStatus & CD_ACT) && info->cd_status) {
526 #ifdef ROCKET_DEBUG_HANGUP
527 printk(KERN_INFO "CD drop, calling hangup.\n");
531 info->cd_status = (ChanStatus & CD_ACT) ? 1 : 0;
532 wake_up_interruptible(&info->open_wait);
534 #ifdef ROCKET_DEBUG_INTR
535 if (IntMask & DELTA_CTS) { /* CTS change */
536 printk(KERN_INFO "CTS change...\n");
538 if (IntMask & DELTA_DSR) { /* DSR change */
539 printk(KERN_INFO "DSR change...\n");
545 * The top level polling routine. Repeats every 1/100 HZ (10ms).
547 static void rp_do_poll(unsigned long dummy)
550 int ctrl, aiop, ch, line;
551 unsigned int xmitmask, i;
552 unsigned int CtlMask;
553 unsigned char AiopMask;
556 /* Walk through all the boards (ctrl's) */
557 for (ctrl = 0; ctrl < max_board; ctrl++) {
558 if (rcktpt_io_addr[ctrl] <= 0)
561 /* Get a ptr to the board's control struct */
562 ctlp = sCtlNumToCtlPtr(ctrl);
564 /* Get the interrupt status from the board */
566 if (ctlp->BusType == isPCI)
567 CtlMask = sPCIGetControllerIntStatus(ctlp);
570 CtlMask = sGetControllerIntStatus(ctlp);
572 /* Check if any AIOP read bits are set */
573 for (aiop = 0; CtlMask; aiop++) {
574 bit = ctlp->AiopIntrBits[aiop];
577 AiopMask = sGetAiopIntStatus(ctlp, aiop);
579 /* Check if any port read bits are set */
580 for (ch = 0; AiopMask; AiopMask >>= 1, ch++) {
583 /* Get the line number (/dev/ttyRx number). */
584 /* Read the data from the port. */
585 line = GetLineNumber(ctrl, aiop, ch);
586 rp_handle_port(rp_table[line]);
592 xmitmask = xmit_flags[ctrl];
595 * xmit_flags contains bit-significant flags, indicating there is data
596 * to xmit on the port. Bit 0 is port 0 on this board, bit 1 is port
597 * 1, ... (32 total possible). The variable i has the aiop and ch
598 * numbers encoded in it (port 0-7 are aiop0, 8-15 are aiop1, etc).
601 for (i = 0; i < rocketModel[ctrl].numPorts; i++) {
602 if (xmitmask & (1 << i)) {
603 aiop = (i & 0x18) >> 3;
605 line = GetLineNumber(ctrl, aiop, ch);
606 rp_do_transmit(rp_table[line]);
613 * Reset the timer so we get called at the next clock tick (10ms).
615 if (atomic_read(&rp_num_ports_open))
616 mod_timer(&rocket_timer, jiffies + POLL_PERIOD);
620 * Initializes the r_port structure for a port, as well as enabling the port on
622 * Inputs: board, aiop, chan numbers
624 static void init_r_port(int board, int aiop, int chan, struct pci_dev *pci_dev)
631 /* Get the next available line number */
632 line = SetLineNumber(board, aiop, chan);
634 ctlp = sCtlNumToCtlPtr(board);
636 /* Get a r_port struct for the port, fill it in and save it globally, indexed by line number */
637 info = kzalloc(sizeof (struct r_port), GFP_KERNEL);
639 printk(KERN_ERR "Couldn't allocate info struct for line #%d\n",
644 info->magic = RPORT_MAGIC;
650 info->closing_wait = 3000;
651 info->close_delay = 50;
652 init_waitqueue_head(&info->open_wait);
653 init_completion(&info->close_wait);
654 info->flags &= ~ROCKET_MODE_MASK;
655 switch (pc104[board][line]) {
657 info->flags |= ROCKET_MODE_RS422;
660 info->flags |= ROCKET_MODE_RS485;
664 info->flags |= ROCKET_MODE_RS232;
668 info->intmask = RXF_TRIG | TXFIFO_MT | SRC_INT | DELTA_CD | DELTA_CTS | DELTA_DSR;
669 if (sInitChan(ctlp, &info->channel, aiop, chan) == 0) {
670 printk(KERN_ERR "RocketPort sInitChan(%d, %d, %d) failed!\n",
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;
703 tty_register_device(rocket_driver, line, pci_dev ? &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;
719 struct ktermios *t = info->tty->termios;
724 /* Byte size and parity */
725 if ((cflag & CSIZE) == CS8) {
732 if (cflag & CSTOPB) {
739 if (cflag & PARENB) {
742 if (cflag & PARODD) {
752 baud = tty_get_baud_rate(info->tty);
755 divisor = ((rp_baud_base[info->board] + (baud >> 1)) / baud) - 1;
756 if ((divisor >= 8192 || divisor < 0) && old_termios) {
757 baud = tty_termios_baud_rate(old_termios);
760 divisor = (rp_baud_base[info->board] / baud) - 1;
762 if (divisor >= 8192 || divisor < 0) {
764 divisor = (rp_baud_base[info->board] / baud) - 1;
766 info->cps = baud / bits;
767 sSetBaud(cp, divisor);
769 /* FIXME: Should really back compute a baud rate from the divisor */
770 tty_encode_baud_rate(info->tty, baud, baud);
772 if (cflag & CRTSCTS) {
773 info->intmask |= DELTA_CTS;
776 info->intmask &= ~DELTA_CTS;
779 if (cflag & CLOCAL) {
780 info->intmask &= ~DELTA_CD;
782 spin_lock_irqsave(&info->slock, flags);
783 if (sGetChanStatus(cp) & CD_ACT)
787 info->intmask |= DELTA_CD;
788 spin_unlock_irqrestore(&info->slock, flags);
792 * Handle software flow control in the board
794 #ifdef ROCKET_SOFT_FLOW
795 if (I_IXON(info->tty)) {
796 sEnTxSoftFlowCtl(cp);
797 if (I_IXANY(info->tty)) {
802 sSetTxXONChar(cp, START_CHAR(info->tty));
803 sSetTxXOFFChar(cp, STOP_CHAR(info->tty));
805 sDisTxSoftFlowCtl(cp);
812 * Set up ignore/read mask words
814 info->read_status_mask = STMRCVROVRH | 0xFF;
815 if (I_INPCK(info->tty))
816 info->read_status_mask |= STMFRAMEH | STMPARITYH;
817 if (I_BRKINT(info->tty) || I_PARMRK(info->tty))
818 info->read_status_mask |= STMBREAKH;
821 * Characters to ignore
823 info->ignore_status_mask = 0;
824 if (I_IGNPAR(info->tty))
825 info->ignore_status_mask |= STMFRAMEH | STMPARITYH;
826 if (I_IGNBRK(info->tty)) {
827 info->ignore_status_mask |= STMBREAKH;
829 * If we're ignoring parity and break indicators,
830 * ignore overruns too. (For real raw support).
832 if (I_IGNPAR(info->tty))
833 info->ignore_status_mask |= STMRCVROVRH;
836 rocketMode = info->flags & ROCKET_MODE_MASK;
838 if ((info->flags & ROCKET_RTS_TOGGLE)
839 || (rocketMode == ROCKET_MODE_RS485))
844 sSetRTS(&info->channel);
846 if (cp->CtlP->boardType == ROCKET_TYPE_PC104) {
847 switch (rocketMode) {
848 case ROCKET_MODE_RS485:
849 sSetInterfaceMode(cp, InterfaceModeRS485);
851 case ROCKET_MODE_RS422:
852 sSetInterfaceMode(cp, InterfaceModeRS422);
854 case ROCKET_MODE_RS232:
856 if (info->flags & ROCKET_RTS_TOGGLE)
857 sSetInterfaceMode(cp, InterfaceModeRS232T);
859 sSetInterfaceMode(cp, InterfaceModeRS232);
865 /* info->count is considered critical, protected by spinlocks. */
866 static int block_til_ready(struct tty_struct *tty, struct file *filp,
869 DECLARE_WAITQUEUE(wait, current);
871 int do_clocal = 0, extra_count = 0;
875 * If the device is in the middle of being closed, then block
876 * until it's done, and then try again.
878 if (tty_hung_up_p(filp))
879 return ((info->flags & ROCKET_HUP_NOTIFY) ? -EAGAIN : -ERESTARTSYS);
880 if (info->flags & ROCKET_CLOSING) {
881 if (wait_for_completion_interruptible(&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;
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 retval = wait_for_completion_interruptible(&info->close_wait);
991 return ((info->flags & ROCKET_HUP_NOTIFY) ? -EAGAIN : -ERESTARTSYS);
995 * We must not sleep from here until the port is marked fully in use.
1000 info->xmit_buf = (unsigned char *) page;
1002 tty->driver_data = info;
1005 if (info->count++ == 0) {
1006 atomic_inc(&rp_num_ports_open);
1008 #ifdef ROCKET_DEBUG_OPEN
1009 printk(KERN_INFO "rocket mod++ = %d...\n",
1010 atomic_read(&rp_num_ports_open));
1013 #ifdef ROCKET_DEBUG_OPEN
1014 printk(KERN_INFO "rp_open ttyR%d, count=%d\n", info->line, info->count);
1018 * Info->count is now 1; so it's safe to sleep now.
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_WARNING "rp_close: bad serial port count; "
1107 "tty->count is 1, info->count is %d\n", info->count);
1110 if (--info->count < 0) {
1111 printk(KERN_WARNING "rp_close: bad serial port count for "
1112 "ttyR%d: %d\n", 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 rp_flush_buffer(tty);
1165 tty_ldisc_flush(tty);
1167 clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
1169 if (info->blocked_open) {
1170 if (info->close_delay) {
1171 msleep_interruptible(jiffies_to_msecs(info->close_delay));
1173 wake_up_interruptible(&info->open_wait);
1175 if (info->xmit_buf) {
1176 free_page((unsigned long) info->xmit_buf);
1177 info->xmit_buf = NULL;
1180 info->flags &= ~(ROCKET_INITIALIZED | ROCKET_CLOSING | ROCKET_NORMAL_ACTIVE);
1182 complete_all(&info->close_wait);
1183 atomic_dec(&rp_num_ports_open);
1185 #ifdef ROCKET_DEBUG_OPEN
1186 printk(KERN_INFO "rocket mod-- = %d...\n",
1187 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;
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 tty->termios->c_cflag &= ~CMSPAR;
1214 configure_r_port(info, old_termios);
1216 cp = &info->channel;
1218 /* Handle transition to B0 status */
1219 if ((old_termios->c_cflag & CBAUD) && !(tty->termios->c_cflag & CBAUD)) {
1224 /* Handle transition away from B0 status */
1225 if (!(old_termios->c_cflag & CBAUD) && (tty->termios->c_cflag & CBAUD)) {
1226 if (!tty->hw_stopped || !(tty->termios->c_cflag & CRTSCTS))
1231 if ((old_termios->c_cflag & CRTSCTS) && !(tty->termios->c_cflag & CRTSCTS)) {
1232 tty->hw_stopped = 0;
1237 static void rp_break(struct tty_struct *tty, int break_state)
1239 struct r_port *info = (struct r_port *) tty->driver_data;
1240 unsigned long flags;
1242 if (rocket_paranoia_check(info, "rp_break"))
1245 spin_lock_irqsave(&info->slock, flags);
1246 if (break_state == -1)
1247 sSendBreak(&info->channel);
1249 sClrBreak(&info->channel);
1250 spin_unlock_irqrestore(&info->slock, flags);
1254 * sGetChanRI used to be a macro in rocket_int.h. When the functionality for
1255 * the UPCI boards was added, it was decided to make this a function because
1256 * the macro was getting too complicated. All cases except the first one
1257 * (UPCIRingInd) are taken directly from the original macro.
1259 static int sGetChanRI(CHANNEL_T * ChP)
1261 CONTROLLER_t *CtlP = ChP->CtlP;
1262 int ChanNum = ChP->ChanNum;
1265 if (CtlP->UPCIRingInd)
1266 RingInd = !(sInB(CtlP->UPCIRingInd) & sBitMapSetTbl[ChanNum]);
1267 else if (CtlP->AltChanRingIndicator)
1268 RingInd = sInB((ByteIO_t) (ChP->ChanStat + 8)) & DSR_ACT;
1269 else if (CtlP->boardType == ROCKET_TYPE_PC104)
1270 RingInd = !(sInB(CtlP->AiopIO[3]) & sBitMapSetTbl[ChanNum]);
1275 /********************************************************************************************/
1276 /* Here are the routines used by rp_ioctl. These are all called from exception handlers. */
1279 * Returns the state of the serial modem control lines. These next 2 functions
1280 * are the way kernel versions > 2.5 handle modem control lines rather than IOCTLs.
1282 static int rp_tiocmget(struct tty_struct *tty, struct file *file)
1284 struct r_port *info = (struct r_port *)tty->driver_data;
1285 unsigned int control, result, ChanStatus;
1287 ChanStatus = sGetChanStatusLo(&info->channel);
1288 control = info->channel.TxControl[3];
1289 result = ((control & SET_RTS) ? TIOCM_RTS : 0) |
1290 ((control & SET_DTR) ? TIOCM_DTR : 0) |
1291 ((ChanStatus & CD_ACT) ? TIOCM_CAR : 0) |
1292 (sGetChanRI(&info->channel) ? TIOCM_RNG : 0) |
1293 ((ChanStatus & DSR_ACT) ? TIOCM_DSR : 0) |
1294 ((ChanStatus & CTS_ACT) ? TIOCM_CTS : 0);
1300 * Sets the modem control lines
1302 static int rp_tiocmset(struct tty_struct *tty, struct file *file,
1303 unsigned int set, unsigned int clear)
1305 struct r_port *info = (struct r_port *)tty->driver_data;
1307 if (set & TIOCM_RTS)
1308 info->channel.TxControl[3] |= SET_RTS;
1309 if (set & TIOCM_DTR)
1310 info->channel.TxControl[3] |= SET_DTR;
1311 if (clear & TIOCM_RTS)
1312 info->channel.TxControl[3] &= ~SET_RTS;
1313 if (clear & TIOCM_DTR)
1314 info->channel.TxControl[3] &= ~SET_DTR;
1316 out32(info->channel.IndexAddr, info->channel.TxControl);
1320 static int get_config(struct r_port *info, struct rocket_config __user *retinfo)
1322 struct rocket_config tmp;
1326 memset(&tmp, 0, sizeof (tmp));
1327 tmp.line = info->line;
1328 tmp.flags = info->flags;
1329 tmp.close_delay = info->close_delay;
1330 tmp.closing_wait = info->closing_wait;
1331 tmp.port = rcktpt_io_addr[(info->line >> 5) & 3];
1333 if (copy_to_user(retinfo, &tmp, sizeof (*retinfo)))
1338 static int set_config(struct r_port *info, struct rocket_config __user *new_info)
1340 struct rocket_config new_serial;
1342 if (copy_from_user(&new_serial, new_info, sizeof (new_serial)))
1345 if (!capable(CAP_SYS_ADMIN))
1347 if ((new_serial.flags & ~ROCKET_USR_MASK) != (info->flags & ~ROCKET_USR_MASK))
1349 info->flags = ((info->flags & ~ROCKET_USR_MASK) | (new_serial.flags & ROCKET_USR_MASK));
1350 configure_r_port(info, NULL);
1354 info->flags = ((info->flags & ~ROCKET_FLAGS) | (new_serial.flags & ROCKET_FLAGS));
1355 info->close_delay = new_serial.close_delay;
1356 info->closing_wait = new_serial.closing_wait;
1358 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_HI)
1359 info->tty->alt_speed = 57600;
1360 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_VHI)
1361 info->tty->alt_speed = 115200;
1362 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_SHI)
1363 info->tty->alt_speed = 230400;
1364 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_WARP)
1365 info->tty->alt_speed = 460800;
1367 configure_r_port(info, NULL);
1372 * This function fills in a rocket_ports struct with information
1373 * about what boards/ports are in the system. This info is passed
1374 * to user space. See setrocket.c where the info is used to create
1375 * the /dev/ttyRx ports.
1377 static int get_ports(struct r_port *info, struct rocket_ports __user *retports)
1379 struct rocket_ports tmp;
1384 memset(&tmp, 0, sizeof (tmp));
1385 tmp.tty_major = rocket_driver->major;
1387 for (board = 0; board < 4; board++) {
1388 tmp.rocketModel[board].model = rocketModel[board].model;
1389 strcpy(tmp.rocketModel[board].modelString, rocketModel[board].modelString);
1390 tmp.rocketModel[board].numPorts = rocketModel[board].numPorts;
1391 tmp.rocketModel[board].loadrm2 = rocketModel[board].loadrm2;
1392 tmp.rocketModel[board].startingPortNumber = rocketModel[board].startingPortNumber;
1394 if (copy_to_user(retports, &tmp, sizeof (*retports)))
1399 static int reset_rm2(struct r_port *info, void __user *arg)
1403 if (!capable(CAP_SYS_ADMIN))
1406 if (copy_from_user(&reset, arg, sizeof (int)))
1411 if (rcktpt_type[info->board] != ROCKET_TYPE_MODEMII &&
1412 rcktpt_type[info->board] != ROCKET_TYPE_MODEMIII)
1415 if (info->ctlp->BusType == isISA)
1416 sModemReset(info->ctlp, info->chan, reset);
1418 sPCIModemReset(info->ctlp, info->chan, reset);
1423 static int get_version(struct r_port *info, struct rocket_version __user *retvers)
1425 if (copy_to_user(retvers, &driver_version, sizeof (*retvers)))
1430 /* IOCTL call handler into the driver */
1431 static int rp_ioctl(struct tty_struct *tty, struct file *file,
1432 unsigned int cmd, unsigned long arg)
1434 struct r_port *info = (struct r_port *) tty->driver_data;
1435 void __user *argp = (void __user *)arg;
1437 if (cmd != RCKP_GET_PORTS && rocket_paranoia_check(info, "rp_ioctl"))
1441 case RCKP_GET_STRUCT:
1442 if (copy_to_user(argp, info, sizeof (struct r_port)))
1445 case RCKP_GET_CONFIG:
1446 return get_config(info, argp);
1447 case RCKP_SET_CONFIG:
1448 return set_config(info, argp);
1449 case RCKP_GET_PORTS:
1450 return get_ports(info, argp);
1451 case RCKP_RESET_RM2:
1452 return reset_rm2(info, argp);
1453 case RCKP_GET_VERSION:
1454 return get_version(info, argp);
1456 return -ENOIOCTLCMD;
1461 static void rp_send_xchar(struct tty_struct *tty, char ch)
1463 struct r_port *info = (struct r_port *) tty->driver_data;
1466 if (rocket_paranoia_check(info, "rp_send_xchar"))
1469 cp = &info->channel;
1471 sWriteTxPrioByte(cp, ch);
1473 sWriteTxByte(sGetTxRxDataIO(cp), ch);
1476 static void rp_throttle(struct tty_struct *tty)
1478 struct r_port *info = (struct r_port *) tty->driver_data;
1481 #ifdef ROCKET_DEBUG_THROTTLE
1482 printk(KERN_INFO "throttle %s: %d....\n", tty->name,
1483 tty->ldisc.chars_in_buffer(tty));
1486 if (rocket_paranoia_check(info, "rp_throttle"))
1489 cp = &info->channel;
1491 rp_send_xchar(tty, STOP_CHAR(tty));
1493 sClrRTS(&info->channel);
1496 static void rp_unthrottle(struct tty_struct *tty)
1498 struct r_port *info = (struct r_port *) tty->driver_data;
1500 #ifdef ROCKET_DEBUG_THROTTLE
1501 printk(KERN_INFO "unthrottle %s: %d....\n", tty->name,
1502 tty->ldisc.chars_in_buffer(tty));
1505 if (rocket_paranoia_check(info, "rp_throttle"))
1508 cp = &info->channel;
1510 rp_send_xchar(tty, START_CHAR(tty));
1512 sSetRTS(&info->channel);
1516 * ------------------------------------------------------------
1517 * rp_stop() and rp_start()
1519 * This routines are called before setting or resetting tty->stopped.
1520 * They enable or disable transmitter interrupts, as necessary.
1521 * ------------------------------------------------------------
1523 static void rp_stop(struct tty_struct *tty)
1525 struct r_port *info = (struct r_port *) tty->driver_data;
1527 #ifdef ROCKET_DEBUG_FLOW
1528 printk(KERN_INFO "stop %s: %d %d....\n", tty->name,
1529 info->xmit_cnt, info->xmit_fifo_room);
1532 if (rocket_paranoia_check(info, "rp_stop"))
1535 if (sGetTxCnt(&info->channel))
1536 sDisTransmit(&info->channel);
1539 static void rp_start(struct tty_struct *tty)
1541 struct r_port *info = (struct r_port *) tty->driver_data;
1543 #ifdef ROCKET_DEBUG_FLOW
1544 printk(KERN_INFO "start %s: %d %d....\n", tty->name,
1545 info->xmit_cnt, info->xmit_fifo_room);
1548 if (rocket_paranoia_check(info, "rp_stop"))
1551 sEnTransmit(&info->channel);
1552 set_bit((info->aiop * 8) + info->chan,
1553 (void *) &xmit_flags[info->board]);
1557 * rp_wait_until_sent() --- wait until the transmitter is empty
1559 static void rp_wait_until_sent(struct tty_struct *tty, int timeout)
1561 struct r_port *info = (struct r_port *) tty->driver_data;
1563 unsigned long orig_jiffies;
1564 int check_time, exit_time;
1567 if (rocket_paranoia_check(info, "rp_wait_until_sent"))
1570 cp = &info->channel;
1572 orig_jiffies = jiffies;
1573 #ifdef ROCKET_DEBUG_WAIT_UNTIL_SENT
1574 printk(KERN_INFO "In RP_wait_until_sent(%d) (jiff=%lu)...\n", timeout,
1576 printk(KERN_INFO "cps=%d...\n", info->cps);
1579 txcnt = sGetTxCnt(cp);
1581 if (sGetChanStatusLo(cp) & TXSHRMT)
1583 check_time = (HZ / info->cps) / 5;
1585 check_time = HZ * txcnt / info->cps;
1588 exit_time = orig_jiffies + timeout - jiffies;
1591 if (exit_time < check_time)
1592 check_time = exit_time;
1594 if (check_time == 0)
1596 #ifdef ROCKET_DEBUG_WAIT_UNTIL_SENT
1597 printk(KERN_INFO "txcnt = %d (jiff=%lu,check=%d)...\n", txcnt,
1598 jiffies, check_time);
1600 msleep_interruptible(jiffies_to_msecs(check_time));
1601 if (signal_pending(current))
1604 __set_current_state(TASK_RUNNING);
1605 #ifdef ROCKET_DEBUG_WAIT_UNTIL_SENT
1606 printk(KERN_INFO "txcnt = %d (jiff=%lu)...done\n", txcnt, jiffies);
1611 * rp_hangup() --- called by tty_hangup() when a hangup is signaled.
1613 static void rp_hangup(struct tty_struct *tty)
1616 struct r_port *info = (struct r_port *) tty->driver_data;
1618 if (rocket_paranoia_check(info, "rp_hangup"))
1621 #if (defined(ROCKET_DEBUG_OPEN) || defined(ROCKET_DEBUG_HANGUP))
1622 printk(KERN_INFO "rp_hangup of ttyR%d...\n", info->line);
1624 rp_flush_buffer(tty);
1625 if (info->flags & ROCKET_CLOSING)
1628 atomic_dec(&rp_num_ports_open);
1629 clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
1632 info->flags &= ~ROCKET_NORMAL_ACTIVE;
1635 cp = &info->channel;
1638 sDisInterrupts(cp, (TXINT_EN | MCINT_EN | RXINT_EN | SRCINT_EN | CHANINT_EN));
1640 sDisTxSoftFlowCtl(cp);
1642 info->flags &= ~ROCKET_INITIALIZED;
1644 wake_up_interruptible(&info->open_wait);
1648 * Exception handler - write char routine. The RocketPort driver uses a
1649 * double-buffering strategy, with the twist that if the in-memory CPU
1650 * buffer is empty, and there's space in the transmit FIFO, the
1651 * writing routines will write directly to transmit FIFO.
1652 * Write buffer and counters protected by spinlocks
1654 static void rp_put_char(struct tty_struct *tty, unsigned char ch)
1656 struct r_port *info = (struct r_port *) tty->driver_data;
1658 unsigned long flags;
1660 if (rocket_paranoia_check(info, "rp_put_char"))
1664 * Grab the port write mutex, locking out other processes that try to
1665 * write to this port
1667 mutex_lock(&info->write_mtx);
1669 #ifdef ROCKET_DEBUG_WRITE
1670 printk(KERN_INFO "rp_put_char %c...\n", ch);
1673 spin_lock_irqsave(&info->slock, flags);
1674 cp = &info->channel;
1676 if (!tty->stopped && !tty->hw_stopped && info->xmit_fifo_room == 0)
1677 info->xmit_fifo_room = TXFIFO_SIZE - sGetTxCnt(cp);
1679 if (tty->stopped || tty->hw_stopped || info->xmit_fifo_room == 0 || info->xmit_cnt != 0) {
1680 info->xmit_buf[info->xmit_head++] = ch;
1681 info->xmit_head &= XMIT_BUF_SIZE - 1;
1683 set_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
1685 sOutB(sGetTxRxDataIO(cp), ch);
1686 info->xmit_fifo_room--;
1688 spin_unlock_irqrestore(&info->slock, flags);
1689 mutex_unlock(&info->write_mtx);
1693 * Exception handler - write routine, called when user app writes to the device.
1694 * A per port write mutex is used to protect from another process writing to
1695 * this port at the same time. This other process could be running on the other CPU
1696 * or get control of the CPU if the copy_from_user() blocks due to a page fault (swapped out).
1697 * Spinlocks protect the info xmit members.
1699 static int rp_write(struct tty_struct *tty,
1700 const unsigned char *buf, int count)
1702 struct r_port *info = (struct r_port *) tty->driver_data;
1704 const unsigned char *b;
1706 unsigned long flags;
1708 if (count <= 0 || rocket_paranoia_check(info, "rp_write"))
1711 if (mutex_lock_interruptible(&info->write_mtx))
1712 return -ERESTARTSYS;
1714 #ifdef ROCKET_DEBUG_WRITE
1715 printk(KERN_INFO "rp_write %d chars...\n", count);
1717 cp = &info->channel;
1719 if (!tty->stopped && !tty->hw_stopped && info->xmit_fifo_room < count)
1720 info->xmit_fifo_room = TXFIFO_SIZE - sGetTxCnt(cp);
1723 * If the write queue for the port is empty, and there is FIFO space, stuff bytes
1724 * into FIFO. Use the write queue for temp storage.
1726 if (!tty->stopped && !tty->hw_stopped && info->xmit_cnt == 0 && info->xmit_fifo_room > 0) {
1727 c = min(count, info->xmit_fifo_room);
1730 /* Push data into FIFO, 2 bytes at a time */
1731 sOutStrW(sGetTxRxDataIO(cp), (unsigned short *) b, c / 2);
1733 /* If there is a byte remaining, write it */
1735 sOutB(sGetTxRxDataIO(cp), b[c - 1]);
1741 spin_lock_irqsave(&info->slock, flags);
1742 info->xmit_fifo_room -= c;
1743 spin_unlock_irqrestore(&info->slock, flags);
1746 /* If count is zero, we wrote it all and are done */
1750 /* Write remaining data into the port's xmit_buf */
1752 if (!info->tty) /* Seemingly obligatory check... */
1755 c = min(count, min(XMIT_BUF_SIZE - info->xmit_cnt - 1, XMIT_BUF_SIZE - info->xmit_head));
1760 memcpy(info->xmit_buf + info->xmit_head, b, c);
1762 spin_lock_irqsave(&info->slock, flags);
1764 (info->xmit_head + c) & (XMIT_BUF_SIZE - 1);
1765 info->xmit_cnt += c;
1766 spin_unlock_irqrestore(&info->slock, flags);
1773 if ((retval > 0) && !tty->stopped && !tty->hw_stopped)
1774 set_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
1777 if (info->xmit_cnt < WAKEUP_CHARS) {
1779 #ifdef ROCKETPORT_HAVE_POLL_WAIT
1780 wake_up_interruptible(&tty->poll_wait);
1783 mutex_unlock(&info->write_mtx);
1788 * Return the number of characters that can be sent. We estimate
1789 * only using the in-memory transmit buffer only, and ignore the
1790 * potential space in the transmit FIFO.
1792 static int rp_write_room(struct tty_struct *tty)
1794 struct r_port *info = (struct r_port *) tty->driver_data;
1797 if (rocket_paranoia_check(info, "rp_write_room"))
1800 ret = XMIT_BUF_SIZE - info->xmit_cnt - 1;
1803 #ifdef ROCKET_DEBUG_WRITE
1804 printk(KERN_INFO "rp_write_room returns %d...\n", ret);
1810 * Return the number of characters in the buffer. Again, this only
1811 * counts those characters in the in-memory transmit buffer.
1813 static int rp_chars_in_buffer(struct tty_struct *tty)
1815 struct r_port *info = (struct r_port *) tty->driver_data;
1818 if (rocket_paranoia_check(info, "rp_chars_in_buffer"))
1821 cp = &info->channel;
1823 #ifdef ROCKET_DEBUG_WRITE
1824 printk(KERN_INFO "rp_chars_in_buffer returns %d...\n", info->xmit_cnt);
1826 return info->xmit_cnt;
1830 * Flushes the TX fifo for a port, deletes data in the xmit_buf stored in the
1831 * r_port struct for the port. Note that spinlock are used to protect info members,
1832 * do not call this function if the spinlock is already held.
1834 static void rp_flush_buffer(struct tty_struct *tty)
1836 struct r_port *info = (struct r_port *) tty->driver_data;
1838 unsigned long flags;
1840 if (rocket_paranoia_check(info, "rp_flush_buffer"))
1843 spin_lock_irqsave(&info->slock, flags);
1844 info->xmit_cnt = info->xmit_head = info->xmit_tail = 0;
1845 spin_unlock_irqrestore(&info->slock, flags);
1847 #ifdef ROCKETPORT_HAVE_POLL_WAIT
1848 wake_up_interruptible(&tty->poll_wait);
1852 cp = &info->channel;
1858 static struct pci_device_id __devinitdata rocket_pci_ids[] = {
1859 { PCI_DEVICE(PCI_VENDOR_ID_RP, PCI_ANY_ID) },
1862 MODULE_DEVICE_TABLE(pci, rocket_pci_ids);
1865 * Called when a PCI card is found. Retrieves and stores model information,
1866 * init's aiopic and serial port hardware.
1867 * Inputs: i is the board number (0-n)
1869 static __init int register_PCI(int i, struct pci_dev *dev)
1871 int num_aiops, aiop, max_num_aiops, num_chan, chan;
1872 unsigned int aiopio[MAX_AIOPS_PER_BOARD];
1873 char *str, *board_type;
1877 int altChanRingIndicator = 0;
1878 int ports_per_aiop = 8;
1879 WordIO_t ConfigIO = 0;
1880 ByteIO_t UPCIRingInd = 0;
1882 if (!dev || pci_enable_device(dev))
1885 rcktpt_io_addr[i] = pci_resource_start(dev, 0);
1887 rcktpt_type[i] = ROCKET_TYPE_NORMAL;
1888 rocketModel[i].loadrm2 = 0;
1889 rocketModel[i].startingPortNumber = nextLineNumber;
1891 /* Depending on the model, set up some config variables */
1892 switch (dev->device) {
1893 case PCI_DEVICE_ID_RP4QUAD:
1897 rocketModel[i].model = MODEL_RP4QUAD;
1898 strcpy(rocketModel[i].modelString, "RocketPort 4 port w/quad cable");
1899 rocketModel[i].numPorts = 4;
1901 case PCI_DEVICE_ID_RP8OCTA:
1904 rocketModel[i].model = MODEL_RP8OCTA;
1905 strcpy(rocketModel[i].modelString, "RocketPort 8 port w/octa cable");
1906 rocketModel[i].numPorts = 8;
1908 case PCI_DEVICE_ID_URP8OCTA:
1911 rocketModel[i].model = MODEL_UPCI_RP8OCTA;
1912 strcpy(rocketModel[i].modelString, "RocketPort UPCI 8 port w/octa cable");
1913 rocketModel[i].numPorts = 8;
1915 case PCI_DEVICE_ID_RP8INTF:
1918 rocketModel[i].model = MODEL_RP8INTF;
1919 strcpy(rocketModel[i].modelString, "RocketPort 8 port w/external I/F");
1920 rocketModel[i].numPorts = 8;
1922 case PCI_DEVICE_ID_URP8INTF:
1925 rocketModel[i].model = MODEL_UPCI_RP8INTF;
1926 strcpy(rocketModel[i].modelString, "RocketPort UPCI 8 port w/external I/F");
1927 rocketModel[i].numPorts = 8;
1929 case PCI_DEVICE_ID_RP8J:
1932 rocketModel[i].model = MODEL_RP8J;
1933 strcpy(rocketModel[i].modelString, "RocketPort 8 port w/RJ11 connectors");
1934 rocketModel[i].numPorts = 8;
1936 case PCI_DEVICE_ID_RP4J:
1940 rocketModel[i].model = MODEL_RP4J;
1941 strcpy(rocketModel[i].modelString, "RocketPort 4 port w/RJ45 connectors");
1942 rocketModel[i].numPorts = 4;
1944 case PCI_DEVICE_ID_RP8SNI:
1945 str = "8 (DB78 Custom)";
1947 rocketModel[i].model = MODEL_RP8SNI;
1948 strcpy(rocketModel[i].modelString, "RocketPort 8 port w/ custom DB78");
1949 rocketModel[i].numPorts = 8;
1951 case PCI_DEVICE_ID_RP16SNI:
1952 str = "16 (DB78 Custom)";
1954 rocketModel[i].model = MODEL_RP16SNI;
1955 strcpy(rocketModel[i].modelString, "RocketPort 16 port w/ custom DB78");
1956 rocketModel[i].numPorts = 16;
1958 case PCI_DEVICE_ID_RP16INTF:
1961 rocketModel[i].model = MODEL_RP16INTF;
1962 strcpy(rocketModel[i].modelString, "RocketPort 16 port w/external I/F");
1963 rocketModel[i].numPorts = 16;
1965 case PCI_DEVICE_ID_URP16INTF:
1968 rocketModel[i].model = MODEL_UPCI_RP16INTF;
1969 strcpy(rocketModel[i].modelString, "RocketPort UPCI 16 port w/external I/F");
1970 rocketModel[i].numPorts = 16;
1972 case PCI_DEVICE_ID_CRP16INTF:
1975 rocketModel[i].model = MODEL_CPCI_RP16INTF;
1976 strcpy(rocketModel[i].modelString, "RocketPort Compact PCI 16 port w/external I/F");
1977 rocketModel[i].numPorts = 16;
1979 case PCI_DEVICE_ID_RP32INTF:
1982 rocketModel[i].model = MODEL_RP32INTF;
1983 strcpy(rocketModel[i].modelString, "RocketPort 32 port w/external I/F");
1984 rocketModel[i].numPorts = 32;
1986 case PCI_DEVICE_ID_URP32INTF:
1989 rocketModel[i].model = MODEL_UPCI_RP32INTF;
1990 strcpy(rocketModel[i].modelString, "RocketPort UPCI 32 port w/external I/F");
1991 rocketModel[i].numPorts = 32;
1993 case PCI_DEVICE_ID_RPP4:
1994 str = "Plus Quadcable";
1997 altChanRingIndicator++;
1999 rocketModel[i].model = MODEL_RPP4;
2000 strcpy(rocketModel[i].modelString, "RocketPort Plus 4 port");
2001 rocketModel[i].numPorts = 4;
2003 case PCI_DEVICE_ID_RPP8:
2004 str = "Plus Octacable";
2007 altChanRingIndicator++;
2009 rocketModel[i].model = MODEL_RPP8;
2010 strcpy(rocketModel[i].modelString, "RocketPort Plus 8 port");
2011 rocketModel[i].numPorts = 8;
2013 case PCI_DEVICE_ID_RP2_232:
2014 str = "Plus 2 (RS-232)";
2017 altChanRingIndicator++;
2019 rocketModel[i].model = MODEL_RP2_232;
2020 strcpy(rocketModel[i].modelString, "RocketPort Plus 2 port RS232");
2021 rocketModel[i].numPorts = 2;
2023 case PCI_DEVICE_ID_RP2_422:
2024 str = "Plus 2 (RS-422)";
2027 altChanRingIndicator++;
2029 rocketModel[i].model = MODEL_RP2_422;
2030 strcpy(rocketModel[i].modelString, "RocketPort Plus 2 port RS422");
2031 rocketModel[i].numPorts = 2;
2033 case PCI_DEVICE_ID_RP6M:
2039 /* If revision is 1, the rocketmodem flash must be loaded.
2040 * If it is 2 it is a "socketed" version. */
2041 if (dev->revision == 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 (dev->revision == 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 dev_info(&dev->dev, "comtrol PCI controller #%d found at "
2168 "address %04lx, %d AIOP(s) (%s), creating ttyR%d - %ld\n",
2169 i, rcktpt_io_addr[i], num_aiops, rocketModel[i].modelString,
2170 rocketModel[i].startingPortNumber,
2171 rocketModel[i].startingPortNumber + rocketModel[i].numPorts-1);
2173 if (num_aiops <= 0) {
2174 rcktpt_io_addr[i] = 0;
2179 /* Reset the AIOPIC, init the serial ports */
2180 for (aiop = 0; aiop < num_aiops; aiop++) {
2181 sResetAiopByNum(ctlp, aiop);
2182 num_chan = ports_per_aiop;
2183 for (chan = 0; chan < num_chan; chan++)
2184 init_r_port(i, aiop, chan, dev);
2187 /* Rocket modems must be reset */
2188 if ((rcktpt_type[i] == ROCKET_TYPE_MODEM) ||
2189 (rcktpt_type[i] == ROCKET_TYPE_MODEMII) ||
2190 (rcktpt_type[i] == ROCKET_TYPE_MODEMIII)) {
2191 num_chan = ports_per_aiop;
2192 for (chan = 0; chan < num_chan; chan++)
2193 sPCIModemReset(ctlp, chan, 1);
2195 for (chan = 0; chan < num_chan; chan++)
2196 sPCIModemReset(ctlp, chan, 0);
2198 rmSpeakerReset(ctlp, rocketModel[i].model);
2204 * Probes for PCI cards, inits them if found
2205 * Input: board_found = number of ISA boards already found, or the
2206 * starting board number
2207 * Returns: Number of PCI boards found
2209 static int __init init_PCI(int boards_found)
2211 struct pci_dev *dev = NULL;
2214 /* Work through the PCI device list, pulling out ours */
2215 while ((dev = pci_get_device(PCI_VENDOR_ID_RP, PCI_ANY_ID, dev))) {
2216 if (register_PCI(count + boards_found, dev))
2222 #endif /* CONFIG_PCI */
2225 * Probes for ISA cards
2226 * Input: i = the board number to look for
2227 * Returns: 1 if board found, 0 else
2229 static int __init init_ISA(int i)
2231 int num_aiops, num_chan = 0, total_num_chan = 0;
2233 unsigned int aiopio[MAX_AIOPS_PER_BOARD];
2237 /* If io_addr is zero, no board configured */
2238 if (rcktpt_io_addr[i] == 0)
2241 /* Reserve the IO region */
2242 if (!request_region(rcktpt_io_addr[i], 64, "Comtrol RocketPort")) {
2243 printk(KERN_ERR "Unable to reserve IO region for configured "
2244 "ISA RocketPort at address 0x%lx, board not "
2245 "installed...\n", rcktpt_io_addr[i]);
2246 rcktpt_io_addr[i] = 0;
2250 ctlp = sCtlNumToCtlPtr(i);
2252 ctlp->boardType = rcktpt_type[i];
2254 switch (rcktpt_type[i]) {
2255 case ROCKET_TYPE_PC104:
2256 type_string = "(PC104)";
2258 case ROCKET_TYPE_MODEM:
2259 type_string = "(RocketModem)";
2261 case ROCKET_TYPE_MODEMII:
2262 type_string = "(RocketModem II)";
2270 * If support_low_speed is set, use the slow clock prescale,
2271 * which supports 50 bps
2273 if (support_low_speed) {
2274 sClockPrescale = 0x19; /* mod 9 (divide by 10) prescale */
2275 rp_baud_base[i] = 230400;
2277 sClockPrescale = 0x14; /* mod 4 (devide by 5) prescale */
2278 rp_baud_base[i] = 460800;
2281 for (aiop = 0; aiop < MAX_AIOPS_PER_BOARD; aiop++)
2282 aiopio[aiop] = rcktpt_io_addr[i] + (aiop * 0x400);
2284 num_aiops = sInitController(ctlp, i, controller + (i * 0x400), aiopio, MAX_AIOPS_PER_BOARD, 0, FREQ_DIS, 0);
2286 if (ctlp->boardType == ROCKET_TYPE_PC104) {
2287 sEnAiop(ctlp, 2); /* only one AIOPIC, but these */
2288 sEnAiop(ctlp, 3); /* CSels used for other stuff */
2291 /* If something went wrong initing the AIOP's release the ISA IO memory */
2292 if (num_aiops <= 0) {
2293 release_region(rcktpt_io_addr[i], 64);
2294 rcktpt_io_addr[i] = 0;
2298 rocketModel[i].startingPortNumber = nextLineNumber;
2300 for (aiop = 0; aiop < num_aiops; aiop++) {
2301 sResetAiopByNum(ctlp, aiop);
2302 sEnAiop(ctlp, aiop);
2303 num_chan = sGetAiopNumChan(ctlp, aiop);
2304 total_num_chan += num_chan;
2305 for (chan = 0; chan < num_chan; chan++)
2306 init_r_port(i, aiop, chan, NULL);
2309 if ((rcktpt_type[i] == ROCKET_TYPE_MODEM) || (rcktpt_type[i] == ROCKET_TYPE_MODEMII)) {
2310 num_chan = sGetAiopNumChan(ctlp, 0);
2311 total_num_chan = num_chan;
2312 for (chan = 0; chan < num_chan; chan++)
2313 sModemReset(ctlp, chan, 1);
2315 for (chan = 0; chan < num_chan; chan++)
2316 sModemReset(ctlp, chan, 0);
2318 strcpy(rocketModel[i].modelString, "RocketModem ISA");
2320 strcpy(rocketModel[i].modelString, "RocketPort ISA");
2322 rocketModel[i].numPorts = total_num_chan;
2323 rocketModel[i].model = MODEL_ISA;
2325 printk(KERN_INFO "RocketPort ISA card #%d found at 0x%lx - %d AIOPs %s\n",
2326 i, rcktpt_io_addr[i], num_aiops, type_string);
2328 printk(KERN_INFO "Installing %s, creating /dev/ttyR%d - %ld\n",
2329 rocketModel[i].modelString,
2330 rocketModel[i].startingPortNumber,
2331 rocketModel[i].startingPortNumber +
2332 rocketModel[i].numPorts - 1);
2337 static const struct tty_operations rocket_ops = {
2341 .put_char = rp_put_char,
2342 .write_room = rp_write_room,
2343 .chars_in_buffer = rp_chars_in_buffer,
2344 .flush_buffer = rp_flush_buffer,
2346 .throttle = rp_throttle,
2347 .unthrottle = rp_unthrottle,
2348 .set_termios = rp_set_termios,
2351 .hangup = rp_hangup,
2352 .break_ctl = rp_break,
2353 .send_xchar = rp_send_xchar,
2354 .wait_until_sent = rp_wait_until_sent,
2355 .tiocmget = rp_tiocmget,
2356 .tiocmset = rp_tiocmset,
2360 * The module "startup" routine; it's run when the module is loaded.
2362 static int __init rp_init(void)
2364 int ret = -ENOMEM, pci_boards_found, isa_boards_found, i;
2366 printk(KERN_INFO "RocketPort device driver module, version %s, %s\n",
2367 ROCKET_VERSION, ROCKET_DATE);
2369 rocket_driver = alloc_tty_driver(MAX_RP_PORTS);
2374 * If board 1 is non-zero, there is at least one ISA configured. If controller is
2375 * zero, use the default controller IO address of board1 + 0x40.
2378 if (controller == 0)
2379 controller = board1 + 0x40;
2381 controller = 0; /* Used as a flag, meaning no ISA boards */
2384 /* If an ISA card is configured, reserve the 4 byte IO space for the Mudbac controller */
2385 if (controller && (!request_region(controller, 4, "Comtrol RocketPort"))) {
2386 printk(KERN_ERR "Unable to reserve IO region for first "
2387 "configured ISA RocketPort controller 0x%lx. "
2388 "Driver exiting\n", controller);
2393 /* Store ISA variable retrieved from command line or .conf file. */
2394 rcktpt_io_addr[0] = board1;
2395 rcktpt_io_addr[1] = board2;
2396 rcktpt_io_addr[2] = board3;
2397 rcktpt_io_addr[3] = board4;
2399 rcktpt_type[0] = modem1 ? ROCKET_TYPE_MODEM : ROCKET_TYPE_NORMAL;
2400 rcktpt_type[0] = pc104_1[0] ? ROCKET_TYPE_PC104 : rcktpt_type[0];
2401 rcktpt_type[1] = modem2 ? ROCKET_TYPE_MODEM : ROCKET_TYPE_NORMAL;
2402 rcktpt_type[1] = pc104_2[0] ? ROCKET_TYPE_PC104 : rcktpt_type[1];
2403 rcktpt_type[2] = modem3 ? ROCKET_TYPE_MODEM : ROCKET_TYPE_NORMAL;
2404 rcktpt_type[2] = pc104_3[0] ? ROCKET_TYPE_PC104 : rcktpt_type[2];
2405 rcktpt_type[3] = modem4 ? ROCKET_TYPE_MODEM : ROCKET_TYPE_NORMAL;
2406 rcktpt_type[3] = pc104_4[0] ? ROCKET_TYPE_PC104 : rcktpt_type[3];
2409 * Set up the tty driver structure and then register this
2410 * driver with the tty layer.
2413 rocket_driver->owner = THIS_MODULE;
2414 rocket_driver->flags = TTY_DRIVER_DYNAMIC_DEV;
2415 rocket_driver->name = "ttyR";
2416 rocket_driver->driver_name = "Comtrol RocketPort";
2417 rocket_driver->major = TTY_ROCKET_MAJOR;
2418 rocket_driver->minor_start = 0;
2419 rocket_driver->type = TTY_DRIVER_TYPE_SERIAL;
2420 rocket_driver->subtype = SERIAL_TYPE_NORMAL;
2421 rocket_driver->init_termios = tty_std_termios;
2422 rocket_driver->init_termios.c_cflag =
2423 B9600 | CS8 | CREAD | HUPCL | CLOCAL;
2424 rocket_driver->init_termios.c_ispeed = 9600;
2425 rocket_driver->init_termios.c_ospeed = 9600;
2426 #ifdef ROCKET_SOFT_FLOW
2427 rocket_driver->flags |= TTY_DRIVER_REAL_RAW;
2429 tty_set_operations(rocket_driver, &rocket_ops);
2431 ret = tty_register_driver(rocket_driver);
2433 printk(KERN_ERR "Couldn't install tty RocketPort driver\n");
2437 #ifdef ROCKET_DEBUG_OPEN
2438 printk(KERN_INFO "RocketPort driver is major %d\n", rocket_driver.major);
2442 * OK, let's probe each of the controllers looking for boards. Any boards found
2443 * will be initialized here.
2445 isa_boards_found = 0;
2446 pci_boards_found = 0;
2448 for (i = 0; i < NUM_BOARDS; i++) {
2454 if (isa_boards_found < NUM_BOARDS)
2455 pci_boards_found = init_PCI(isa_boards_found);
2458 max_board = pci_boards_found + isa_boards_found;
2460 if (max_board == 0) {
2461 printk(KERN_ERR "No rocketport ports found; unloading driver\n");
2468 tty_unregister_driver(rocket_driver);
2470 put_tty_driver(rocket_driver);
2476 static void rp_cleanup_module(void)
2481 del_timer_sync(&rocket_timer);
2483 retval = tty_unregister_driver(rocket_driver);
2485 printk(KERN_ERR "Error %d while trying to unregister "
2486 "rocketport driver\n", -retval);
2488 for (i = 0; i < MAX_RP_PORTS; i++)
2490 tty_unregister_device(rocket_driver, i);
2494 put_tty_driver(rocket_driver);
2496 for (i = 0; i < NUM_BOARDS; i++) {
2497 if (rcktpt_io_addr[i] <= 0 || is_PCI[i])
2499 release_region(rcktpt_io_addr[i], 64);
2502 release_region(controller, 4);
2505 /***************************************************************************
2506 Function: sInitController
2507 Purpose: Initialization of controller global registers and controller
2509 Call: sInitController(CtlP,CtlNum,MudbacIO,AiopIOList,AiopIOListSize,
2510 IRQNum,Frequency,PeriodicOnly)
2511 CONTROLLER_T *CtlP; Ptr to controller structure
2512 int CtlNum; Controller number
2513 ByteIO_t MudbacIO; Mudbac base I/O address.
2514 ByteIO_t *AiopIOList; List of I/O addresses for each AIOP.
2515 This list must be in the order the AIOPs will be found on the
2516 controller. Once an AIOP in the list is not found, it is
2517 assumed that there are no more AIOPs on the controller.
2518 int AiopIOListSize; Number of addresses in AiopIOList
2519 int IRQNum; Interrupt Request number. Can be any of the following:
2520 0: Disable global interrupts
2529 Byte_t Frequency: A flag identifying the frequency
2530 of the periodic interrupt, can be any one of the following:
2531 FREQ_DIS - periodic interrupt disabled
2532 FREQ_137HZ - 137 Hertz
2533 FREQ_69HZ - 69 Hertz
2534 FREQ_34HZ - 34 Hertz
2535 FREQ_17HZ - 17 Hertz
2538 If IRQNum is set to 0 the Frequency parameter is
2539 overidden, it is forced to a value of FREQ_DIS.
2540 int PeriodicOnly: 1 if all interrupts except the periodic
2541 interrupt are to be blocked.
2542 0 is both the periodic interrupt and
2543 other channel interrupts are allowed.
2544 If IRQNum is set to 0 the PeriodicOnly parameter is
2545 overidden, it is forced to a value of 0.
2546 Return: int: Number of AIOPs on the controller, or CTLID_NULL if controller
2547 initialization failed.
2550 If periodic interrupts are to be disabled but AIOP interrupts
2551 are allowed, set Frequency to FREQ_DIS and PeriodicOnly to 0.
2553 If interrupts are to be completely disabled set IRQNum to 0.
2555 Setting Frequency to FREQ_DIS and PeriodicOnly to 1 is an
2556 invalid combination.
2558 This function performs initialization of global interrupt modes,
2559 but it does not actually enable global interrupts. To enable
2560 and disable global interrupts use functions sEnGlobalInt() and
2561 sDisGlobalInt(). Enabling of global interrupts is normally not
2562 done until all other initializations are complete.
2564 Even if interrupts are globally enabled, they must also be
2565 individually enabled for each channel that is to generate
2568 Warnings: No range checking on any of the parameters is done.
2570 No context switches are allowed while executing this function.
2572 After this function all AIOPs on the controller are disabled,
2573 they can be enabled with sEnAiop().
2575 static int sInitController(CONTROLLER_T * CtlP, int CtlNum, ByteIO_t MudbacIO,
2576 ByteIO_t * AiopIOList, int AiopIOListSize,
2577 int IRQNum, Byte_t Frequency, int PeriodicOnly)
2583 CtlP->AiopIntrBits = aiop_intr_bits;
2584 CtlP->AltChanRingIndicator = 0;
2585 CtlP->CtlNum = CtlNum;
2586 CtlP->CtlID = CTLID_0001; /* controller release 1 */
2587 CtlP->BusType = isISA;
2588 CtlP->MBaseIO = MudbacIO;
2589 CtlP->MReg1IO = MudbacIO + 1;
2590 CtlP->MReg2IO = MudbacIO + 2;
2591 CtlP->MReg3IO = MudbacIO + 3;
2593 CtlP->MReg2 = 0; /* interrupt disable */
2594 CtlP->MReg3 = 0; /* no periodic interrupts */
2596 if (sIRQMap[IRQNum] == 0) { /* interrupts globally disabled */
2597 CtlP->MReg2 = 0; /* interrupt disable */
2598 CtlP->MReg3 = 0; /* no periodic interrupts */
2600 CtlP->MReg2 = sIRQMap[IRQNum]; /* set IRQ number */
2601 CtlP->MReg3 = Frequency; /* set frequency */
2602 if (PeriodicOnly) { /* periodic interrupt only */
2603 CtlP->MReg3 |= PERIODIC_ONLY;
2607 sOutB(CtlP->MReg2IO, CtlP->MReg2);
2608 sOutB(CtlP->MReg3IO, CtlP->MReg3);
2609 sControllerEOI(CtlP); /* clear EOI if warm init */
2612 for (i = done = 0; i < AiopIOListSize; i++) {
2614 CtlP->AiopIO[i] = (WordIO_t) io;
2615 CtlP->AiopIntChanIO[i] = io + _INT_CHAN;
2616 sOutB(CtlP->MReg2IO, CtlP->MReg2 | (i & 0x03)); /* AIOP index */
2617 sOutB(MudbacIO, (Byte_t) (io >> 6)); /* set up AIOP I/O in MUDBAC */
2620 sEnAiop(CtlP, i); /* enable the AIOP */
2621 CtlP->AiopID[i] = sReadAiopID(io); /* read AIOP ID */
2622 if (CtlP->AiopID[i] == AIOPID_NULL) /* if AIOP does not exist */
2623 done = 1; /* done looking for AIOPs */
2625 CtlP->AiopNumChan[i] = sReadAiopNumChan((WordIO_t) io); /* num channels in AIOP */
2626 sOutW((WordIO_t) io + _INDX_ADDR, _CLK_PRE); /* clock prescaler */
2627 sOutB(io + _INDX_DATA, sClockPrescale);
2628 CtlP->NumAiop++; /* bump count of AIOPs */
2630 sDisAiop(CtlP, i); /* disable AIOP */
2633 if (CtlP->NumAiop == 0)
2636 return (CtlP->NumAiop);
2639 /***************************************************************************
2640 Function: sPCIInitController
2641 Purpose: Initialization of controller global registers and controller
2643 Call: sPCIInitController(CtlP,CtlNum,AiopIOList,AiopIOListSize,
2644 IRQNum,Frequency,PeriodicOnly)
2645 CONTROLLER_T *CtlP; Ptr to controller structure
2646 int CtlNum; Controller number
2647 ByteIO_t *AiopIOList; List of I/O addresses for each AIOP.
2648 This list must be in the order the AIOPs will be found on the
2649 controller. Once an AIOP in the list is not found, it is
2650 assumed that there are no more AIOPs on the controller.
2651 int AiopIOListSize; Number of addresses in AiopIOList
2652 int IRQNum; Interrupt Request number. Can be any of the following:
2653 0: Disable global interrupts
2662 Byte_t Frequency: A flag identifying the frequency
2663 of the periodic interrupt, can be any one of the following:
2664 FREQ_DIS - periodic interrupt disabled
2665 FREQ_137HZ - 137 Hertz
2666 FREQ_69HZ - 69 Hertz
2667 FREQ_34HZ - 34 Hertz
2668 FREQ_17HZ - 17 Hertz
2671 If IRQNum is set to 0 the Frequency parameter is
2672 overidden, it is forced to a value of FREQ_DIS.
2673 int PeriodicOnly: 1 if all interrupts except the periodic
2674 interrupt are to be blocked.
2675 0 is both the periodic interrupt and
2676 other channel interrupts are allowed.
2677 If IRQNum is set to 0 the PeriodicOnly parameter is
2678 overidden, it is forced to a value of 0.
2679 Return: int: Number of AIOPs on the controller, or CTLID_NULL if controller
2680 initialization failed.
2683 If periodic interrupts are to be disabled but AIOP interrupts
2684 are allowed, set Frequency to FREQ_DIS and PeriodicOnly to 0.
2686 If interrupts are to be completely disabled set IRQNum to 0.
2688 Setting Frequency to FREQ_DIS and PeriodicOnly to 1 is an
2689 invalid combination.
2691 This function performs initialization of global interrupt modes,
2692 but it does not actually enable global interrupts. To enable
2693 and disable global interrupts use functions sEnGlobalInt() and
2694 sDisGlobalInt(). Enabling of global interrupts is normally not
2695 done until all other initializations are complete.
2697 Even if interrupts are globally enabled, they must also be
2698 individually enabled for each channel that is to generate
2701 Warnings: No range checking on any of the parameters is done.
2703 No context switches are allowed while executing this function.
2705 After this function all AIOPs on the controller are disabled,
2706 they can be enabled with sEnAiop().
2708 static int sPCIInitController(CONTROLLER_T * CtlP, int CtlNum,
2709 ByteIO_t * AiopIOList, int AiopIOListSize,
2710 WordIO_t ConfigIO, int IRQNum, Byte_t Frequency,
2711 int PeriodicOnly, int altChanRingIndicator,
2717 CtlP->AltChanRingIndicator = altChanRingIndicator;
2718 CtlP->UPCIRingInd = UPCIRingInd;
2719 CtlP->CtlNum = CtlNum;
2720 CtlP->CtlID = CTLID_0001; /* controller release 1 */
2721 CtlP->BusType = isPCI; /* controller release 1 */
2725 CtlP->PCIIO = ConfigIO + _PCI_9030_INT_CTRL;
2726 CtlP->PCIIO2 = ConfigIO + _PCI_9030_GPIO_CTRL;
2727 CtlP->AiopIntrBits = upci_aiop_intr_bits;
2731 (WordIO_t) ((ByteIO_t) AiopIOList[0] + _PCI_INT_FUNC);
2732 CtlP->AiopIntrBits = aiop_intr_bits;
2735 sPCIControllerEOI(CtlP); /* clear EOI if warm init */
2738 for (i = 0; i < AiopIOListSize; i++) {
2740 CtlP->AiopIO[i] = (WordIO_t) io;
2741 CtlP->AiopIntChanIO[i] = io + _INT_CHAN;
2743 CtlP->AiopID[i] = sReadAiopID(io); /* read AIOP ID */
2744 if (CtlP->AiopID[i] == AIOPID_NULL) /* if AIOP does not exist */
2745 break; /* done looking for AIOPs */
2747 CtlP->AiopNumChan[i] = sReadAiopNumChan((WordIO_t) io); /* num channels in AIOP */
2748 sOutW((WordIO_t) io + _INDX_ADDR, _CLK_PRE); /* clock prescaler */
2749 sOutB(io + _INDX_DATA, sClockPrescale);
2750 CtlP->NumAiop++; /* bump count of AIOPs */
2753 if (CtlP->NumAiop == 0)
2756 return (CtlP->NumAiop);
2759 /***************************************************************************
2760 Function: sReadAiopID
2761 Purpose: Read the AIOP idenfication number directly from an AIOP.
2762 Call: sReadAiopID(io)
2763 ByteIO_t io: AIOP base I/O address
2764 Return: int: Flag AIOPID_XXXX if a valid AIOP is found, where X
2765 is replace by an identifying number.
2766 Flag AIOPID_NULL if no valid AIOP is found
2767 Warnings: No context switches are allowed while executing this function.
2770 static int sReadAiopID(ByteIO_t io)
2772 Byte_t AiopID; /* ID byte from AIOP */
2774 sOutB(io + _CMD_REG, RESET_ALL); /* reset AIOP */
2775 sOutB(io + _CMD_REG, 0x0);
2776 AiopID = sInW(io + _CHN_STAT0) & 0x07;
2779 else /* AIOP does not exist */
2783 /***************************************************************************
2784 Function: sReadAiopNumChan
2785 Purpose: Read the number of channels available in an AIOP directly from
2787 Call: sReadAiopNumChan(io)
2788 WordIO_t io: AIOP base I/O address
2789 Return: int: The number of channels available
2790 Comments: The number of channels is determined by write/reads from identical
2791 offsets within the SRAM address spaces for channels 0 and 4.
2792 If the channel 4 space is mirrored to channel 0 it is a 4 channel
2793 AIOP, otherwise it is an 8 channel.
2794 Warnings: No context switches are allowed while executing this function.
2796 static int sReadAiopNumChan(WordIO_t io)
2799 static Byte_t R[4] = { 0x00, 0x00, 0x34, 0x12 };
2801 /* write to chan 0 SRAM */
2802 out32((DWordIO_t) io + _INDX_ADDR, R);
2803 sOutW(io + _INDX_ADDR, 0); /* read from SRAM, chan 0 */
2804 x = sInW(io + _INDX_DATA);
2805 sOutW(io + _INDX_ADDR, 0x4000); /* read from SRAM, chan 4 */
2806 if (x != sInW(io + _INDX_DATA)) /* if different must be 8 chan */
2812 /***************************************************************************
2814 Purpose: Initialization of a channel and channel structure
2815 Call: sInitChan(CtlP,ChP,AiopNum,ChanNum)
2816 CONTROLLER_T *CtlP; Ptr to controller structure
2817 CHANNEL_T *ChP; Ptr to channel structure
2818 int AiopNum; AIOP number within controller
2819 int ChanNum; Channel number within AIOP
2820 Return: int: 1 if initialization succeeded, 0 if it fails because channel
2821 number exceeds number of channels available in AIOP.
2822 Comments: This function must be called before a channel can be used.
2823 Warnings: No range checking on any of the parameters is done.
2825 No context switches are allowed while executing this function.
2827 static int sInitChan(CONTROLLER_T * CtlP, CHANNEL_T * ChP, int AiopNum,
2838 if (ChanNum >= CtlP->AiopNumChan[AiopNum])
2839 return 0; /* exceeds num chans in AIOP */
2841 /* Channel, AIOP, and controller identifiers */
2843 ChP->ChanID = CtlP->AiopID[AiopNum];
2844 ChP->AiopNum = AiopNum;
2845 ChP->ChanNum = ChanNum;
2847 /* Global direct addresses */
2848 AiopIO = CtlP->AiopIO[AiopNum];
2849 ChP->Cmd = (ByteIO_t) AiopIO + _CMD_REG;
2850 ChP->IntChan = (ByteIO_t) AiopIO + _INT_CHAN;
2851 ChP->IntMask = (ByteIO_t) AiopIO + _INT_MASK;
2852 ChP->IndexAddr = (DWordIO_t) AiopIO + _INDX_ADDR;
2853 ChP->IndexData = AiopIO + _INDX_DATA;
2855 /* Channel direct addresses */
2856 ChIOOff = AiopIO + ChP->ChanNum * 2;
2857 ChP->TxRxData = ChIOOff + _TD0;
2858 ChP->ChanStat = ChIOOff + _CHN_STAT0;
2859 ChP->TxRxCount = ChIOOff + _FIFO_CNT0;
2860 ChP->IntID = (ByteIO_t) AiopIO + ChP->ChanNum + _INT_ID0;
2862 /* Initialize the channel from the RData array */
2863 for (i = 0; i < RDATASIZE; i += 4) {
2865 R[1] = RData[i + 1] + 0x10 * ChanNum;
2866 R[2] = RData[i + 2];
2867 R[3] = RData[i + 3];
2868 out32(ChP->IndexAddr, R);
2872 for (i = 0; i < RREGDATASIZE; i += 4) {
2873 ChR[i] = RRegData[i];
2874 ChR[i + 1] = RRegData[i + 1] + 0x10 * ChanNum;
2875 ChR[i + 2] = RRegData[i + 2];
2876 ChR[i + 3] = RRegData[i + 3];
2879 /* Indexed registers */
2880 ChOff = (Word_t) ChanNum *0x1000;
2882 if (sClockPrescale == 0x14)
2887 ChP->BaudDiv[0] = (Byte_t) (ChOff + _BAUD);
2888 ChP->BaudDiv[1] = (Byte_t) ((ChOff + _BAUD) >> 8);
2889 ChP->BaudDiv[2] = (Byte_t) brd9600;
2890 ChP->BaudDiv[3] = (Byte_t) (brd9600 >> 8);
2891 out32(ChP->IndexAddr, ChP->BaudDiv);
2893 ChP->TxControl[0] = (Byte_t) (ChOff + _TX_CTRL);
2894 ChP->TxControl[1] = (Byte_t) ((ChOff + _TX_CTRL) >> 8);
2895 ChP->TxControl[2] = 0;
2896 ChP->TxControl[3] = 0;
2897 out32(ChP->IndexAddr, ChP->TxControl);
2899 ChP->RxControl[0] = (Byte_t) (ChOff + _RX_CTRL);
2900 ChP->RxControl[1] = (Byte_t) ((ChOff + _RX_CTRL) >> 8);
2901 ChP->RxControl[2] = 0;
2902 ChP->RxControl[3] = 0;
2903 out32(ChP->IndexAddr, ChP->RxControl);
2905 ChP->TxEnables[0] = (Byte_t) (ChOff + _TX_ENBLS);
2906 ChP->TxEnables[1] = (Byte_t) ((ChOff + _TX_ENBLS) >> 8);
2907 ChP->TxEnables[2] = 0;
2908 ChP->TxEnables[3] = 0;
2909 out32(ChP->IndexAddr, ChP->TxEnables);
2911 ChP->TxCompare[0] = (Byte_t) (ChOff + _TXCMP1);
2912 ChP->TxCompare[1] = (Byte_t) ((ChOff + _TXCMP1) >> 8);
2913 ChP->TxCompare[2] = 0;
2914 ChP->TxCompare[3] = 0;
2915 out32(ChP->IndexAddr, ChP->TxCompare);
2917 ChP->TxReplace1[0] = (Byte_t) (ChOff + _TXREP1B1);
2918 ChP->TxReplace1[1] = (Byte_t) ((ChOff + _TXREP1B1) >> 8);
2919 ChP->TxReplace1[2] = 0;
2920 ChP->TxReplace1[3] = 0;
2921 out32(ChP->IndexAddr, ChP->TxReplace1);
2923 ChP->TxReplace2[0] = (Byte_t) (ChOff + _TXREP2);
2924 ChP->TxReplace2[1] = (Byte_t) ((ChOff + _TXREP2) >> 8);
2925 ChP->TxReplace2[2] = 0;
2926 ChP->TxReplace2[3] = 0;
2927 out32(ChP->IndexAddr, ChP->TxReplace2);
2929 ChP->TxFIFOPtrs = ChOff + _TXF_OUTP;
2930 ChP->TxFIFO = ChOff + _TX_FIFO;
2932 sOutB(ChP->Cmd, (Byte_t) ChanNum | RESTXFCNT); /* apply reset Tx FIFO count */
2933 sOutB(ChP->Cmd, (Byte_t) ChanNum); /* remove reset Tx FIFO count */
2934 sOutW((WordIO_t) ChP->IndexAddr, ChP->TxFIFOPtrs); /* clear Tx in/out ptrs */
2935 sOutW(ChP->IndexData, 0);
2936 ChP->RxFIFOPtrs = ChOff + _RXF_OUTP;
2937 ChP->RxFIFO = ChOff + _RX_FIFO;
2939 sOutB(ChP->Cmd, (Byte_t) ChanNum | RESRXFCNT); /* apply reset Rx FIFO count */
2940 sOutB(ChP->Cmd, (Byte_t) ChanNum); /* remove reset Rx FIFO count */
2941 sOutW((WordIO_t) ChP->IndexAddr, ChP->RxFIFOPtrs); /* clear Rx out ptr */
2942 sOutW(ChP->IndexData, 0);
2943 sOutW((WordIO_t) ChP->IndexAddr, ChP->RxFIFOPtrs + 2); /* clear Rx in ptr */
2944 sOutW(ChP->IndexData, 0);
2945 ChP->TxPrioCnt = ChOff + _TXP_CNT;
2946 sOutW((WordIO_t) ChP->IndexAddr, ChP->TxPrioCnt);
2947 sOutB(ChP->IndexData, 0);
2948 ChP->TxPrioPtr = ChOff + _TXP_PNTR;
2949 sOutW((WordIO_t) ChP->IndexAddr, ChP->TxPrioPtr);
2950 sOutB(ChP->IndexData, 0);
2951 ChP->TxPrioBuf = ChOff + _TXP_BUF;
2952 sEnRxProcessor(ChP); /* start the Rx processor */
2957 /***************************************************************************
2958 Function: sStopRxProcessor
2959 Purpose: Stop the receive processor from processing a channel.
2960 Call: sStopRxProcessor(ChP)
2961 CHANNEL_T *ChP; Ptr to channel structure
2963 Comments: The receive processor can be started again with sStartRxProcessor().
2964 This function causes the receive processor to skip over the
2965 stopped channel. It does not stop it from processing other channels.
2967 Warnings: No context switches are allowed while executing this function.
2969 Do not leave the receive processor stopped for more than one
2972 After calling this function a delay of 4 uS is required to ensure
2973 that the receive processor is no longer processing this channel.
2975 static void sStopRxProcessor(CHANNEL_T * ChP)
2983 out32(ChP->IndexAddr, R);
2986 /***************************************************************************
2987 Function: sFlushRxFIFO
2988 Purpose: Flush the Rx FIFO
2989 Call: sFlushRxFIFO(ChP)
2990 CHANNEL_T *ChP; Ptr to channel structure
2992 Comments: To prevent data from being enqueued or dequeued in the Tx FIFO
2993 while it is being flushed the receive processor is stopped
2994 and the transmitter is disabled. After these operations a
2995 4 uS delay is done before clearing the pointers to allow
2996 the receive processor to stop. These items are handled inside
2998 Warnings: No context switches are allowed while executing this function.
3000 static void sFlushRxFIFO(CHANNEL_T * ChP)
3003 Byte_t Ch; /* channel number within AIOP */
3004 int RxFIFOEnabled; /* 1 if Rx FIFO enabled */
3006 if (sGetRxCnt(ChP) == 0) /* Rx FIFO empty */
3007 return; /* don't need to flush */
3010 if (ChP->R[0x32] == 0x08) { /* Rx FIFO is enabled */
3012 sDisRxFIFO(ChP); /* disable it */
3013 for (i = 0; i < 2000 / 200; i++) /* delay 2 uS to allow proc to disable FIFO */
3014 sInB(ChP->IntChan); /* depends on bus i/o timing */
3016 sGetChanStatus(ChP); /* clear any pending Rx errors in chan stat */
3017 Ch = (Byte_t) sGetChanNum(ChP);
3018 sOutB(ChP->Cmd, Ch | RESRXFCNT); /* apply reset Rx FIFO count */
3019 sOutB(ChP->Cmd, Ch); /* remove reset Rx FIFO count */
3020 sOutW((WordIO_t) ChP->IndexAddr, ChP->RxFIFOPtrs); /* clear Rx out ptr */
3021 sOutW(ChP->IndexData, 0);
3022 sOutW((WordIO_t) ChP->IndexAddr, ChP->RxFIFOPtrs + 2); /* clear Rx in ptr */
3023 sOutW(ChP->IndexData, 0);
3025 sEnRxFIFO(ChP); /* enable Rx FIFO */
3028 /***************************************************************************
3029 Function: sFlushTxFIFO
3030 Purpose: Flush the Tx FIFO
3031 Call: sFlushTxFIFO(ChP)
3032 CHANNEL_T *ChP; Ptr to channel structure
3034 Comments: To prevent data from being enqueued or dequeued in the Tx FIFO
3035 while it is being flushed the receive processor is stopped
3036 and the transmitter is disabled. After these operations a
3037 4 uS delay is done before clearing the pointers to allow
3038 the receive processor to stop. These items are handled inside
3040 Warnings: No context switches are allowed while executing this function.
3042 static void sFlushTxFIFO(CHANNEL_T * ChP)
3045 Byte_t Ch; /* channel number within AIOP */
3046 int TxEnabled; /* 1 if transmitter enabled */
3048 if (sGetTxCnt(ChP) == 0) /* Tx FIFO empty */
3049 return; /* don't need to flush */
3052 if (ChP->TxControl[3] & TX_ENABLE) {
3054 sDisTransmit(ChP); /* disable transmitter */
3056 sStopRxProcessor(ChP); /* stop Rx processor */
3057 for (i = 0; i < 4000 / 200; i++) /* delay 4 uS to allow proc to stop */
3058 sInB(ChP->IntChan); /* depends on bus i/o timing */
3059 Ch = (Byte_t) sGetChanNum(ChP);
3060 sOutB(ChP->Cmd, Ch | RESTXFCNT); /* apply reset Tx FIFO count */
3061 sOutB(ChP->Cmd, Ch); /* remove reset Tx FIFO count */
3062 sOutW((WordIO_t) ChP->IndexAddr, ChP->TxFIFOPtrs); /* clear Tx in/out ptrs */
3063 sOutW(ChP->IndexData, 0);
3065 sEnTransmit(ChP); /* enable transmitter */
3066 sStartRxProcessor(ChP); /* restart Rx processor */
3069 /***************************************************************************
3070 Function: sWriteTxPrioByte
3071 Purpose: Write a byte of priority transmit data to a channel
3072 Call: sWriteTxPrioByte(ChP,Data)
3073 CHANNEL_T *ChP; Ptr to channel structure
3074 Byte_t Data; The transmit data byte
3076 Return: int: 1 if the bytes is successfully written, otherwise 0.
3078 Comments: The priority byte is transmitted before any data in the Tx FIFO.
3080 Warnings: No context switches are allowed while executing this function.
3082 static int sWriteTxPrioByte(CHANNEL_T * ChP, Byte_t Data)
3084 Byte_t DWBuf[4]; /* buffer for double word writes */
3085 Word_t *WordPtr; /* must be far because Win SS != DS */
3086 register DWordIO_t IndexAddr;
3088 if (sGetTxCnt(ChP) > 1) { /* write it to Tx priority buffer */
3089 IndexAddr = ChP->IndexAddr;
3090 sOutW((WordIO_t) IndexAddr, ChP->TxPrioCnt); /* get priority buffer status */
3091 if (sInB((ByteIO_t) ChP->IndexData) & PRI_PEND) /* priority buffer busy */
3092 return (0); /* nothing sent */
3094 WordPtr = (Word_t *) (&DWBuf[0]);
3095 *WordPtr = ChP->TxPrioBuf; /* data byte address */
3097 DWBuf[2] = Data; /* data byte value */
3098 out32(IndexAddr, DWBuf); /* write it out */
3100 *WordPtr = ChP->TxPrioCnt; /* Tx priority count address */
3102 DWBuf[2] = PRI_PEND + 1; /* indicate 1 byte pending */
3103 DWBuf[3] = 0; /* priority buffer pointer */
3104 out32(IndexAddr, DWBuf); /* write it out */
3105 } else { /* write it to Tx FIFO */
3107 sWriteTxByte(sGetTxRxDataIO(ChP), Data);
3109 return (1); /* 1 byte sent */
3112 /***************************************************************************
3113 Function: sEnInterrupts
3114 Purpose: Enable one or more interrupts for a channel
3115 Call: sEnInterrupts(ChP,Flags)
3116 CHANNEL_T *ChP; Ptr to channel structure
3117 Word_t Flags: Interrupt enable flags, can be any combination
3118 of the following flags:
3119 TXINT_EN: Interrupt on Tx FIFO empty
3120 RXINT_EN: Interrupt on Rx FIFO at trigger level (see
3122 SRCINT_EN: Interrupt on SRC (Special Rx Condition)
3123 MCINT_EN: Interrupt on modem input change
3124 CHANINT_EN: Allow channel interrupt signal to the AIOP's
3125 Interrupt Channel Register.
3127 Comments: If an interrupt enable flag is set in Flags, that interrupt will be
3128 enabled. If an interrupt enable flag is not set in Flags, that
3129 interrupt will not be changed. Interrupts can be disabled with
3130 function sDisInterrupts().
3132 This function sets the appropriate bit for the channel in the AIOP's
3133 Interrupt Mask Register if the CHANINT_EN flag is set. This allows
3134 this channel's bit to be set in the AIOP's Interrupt Channel Register.
3136 Interrupts must also be globally enabled before channel interrupts
3137 will be passed on to the host. This is done with function
3140 In some cases it may be desirable to disable interrupts globally but
3141 enable channel interrupts. This would allow the global interrupt
3142 status register to be used to determine which AIOPs need service.
3144 static void sEnInterrupts(CHANNEL_T * ChP, Word_t Flags)
3146 Byte_t Mask; /* Interrupt Mask Register */
3148 ChP->RxControl[2] |=
3149 ((Byte_t) Flags & (RXINT_EN | SRCINT_EN | MCINT_EN));
3151 out32(ChP->IndexAddr, ChP->RxControl);
3153 ChP->TxControl[2] |= ((Byte_t) Flags & TXINT_EN);
3155 out32(ChP->IndexAddr, ChP->TxControl);
3157 if (Flags & CHANINT_EN) {
3158 Mask = sInB(ChP->IntMask) | sBitMapSetTbl[ChP->ChanNum];
3159 sOutB(ChP->IntMask, Mask);
3163 /***************************************************************************
3164 Function: sDisInterrupts
3165 Purpose: Disable one or more interrupts for a channel
3166 Call: sDisInterrupts(ChP,Flags)
3167 CHANNEL_T *ChP; Ptr to channel structure
3168 Word_t Flags: Interrupt flags, can be any combination
3169 of the following flags:
3170 TXINT_EN: Interrupt on Tx FIFO empty
3171 RXINT_EN: Interrupt on Rx FIFO at trigger level (see
3173 SRCINT_EN: Interrupt on SRC (Special Rx Condition)
3174 MCINT_EN: Interrupt on modem input change
3175 CHANINT_EN: Disable channel interrupt signal to the
3176 AIOP's Interrupt Channel Register.
3178 Comments: If an interrupt flag is set in Flags, that interrupt will be
3179 disabled. If an interrupt flag is not set in Flags, that
3180 interrupt will not be changed. Interrupts can be enabled with
3181 function sEnInterrupts().
3183 This function clears the appropriate bit for the channel in the AIOP's
3184 Interrupt Mask Register if the CHANINT_EN flag is set. This blocks
3185 this channel's bit from being set in the AIOP's Interrupt Channel
3188 static void sDisInterrupts(CHANNEL_T * ChP, Word_t Flags)
3190 Byte_t Mask; /* Interrupt Mask Register */
3192 ChP->RxControl[2] &=
3193 ~((Byte_t) Flags & (RXINT_EN | SRCINT_EN | MCINT_EN));
3194 out32(ChP->IndexAddr, ChP->RxControl);
3195 ChP->TxControl[2] &= ~((Byte_t) Flags & TXINT_EN);
3196 out32(ChP->IndexAddr, ChP->TxControl);
3198 if (Flags & CHANINT_EN) {
3199 Mask = sInB(ChP->IntMask) & sBitMapClrTbl[ChP->ChanNum];
3200 sOutB(ChP->IntMask, Mask);
3204 static void sSetInterfaceMode(CHANNEL_T * ChP, Byte_t mode)
3206 sOutB(ChP->CtlP->AiopIO[2], (mode & 0x18) | ChP->ChanNum);
3210 * Not an official SSCI function, but how to reset RocketModems.
3213 static void sModemReset(CONTROLLER_T * CtlP, int chan, int on)
3218 addr = CtlP->AiopIO[0] + 0x400;
3219 val = sInB(CtlP->MReg3IO);
3220 /* if AIOP[1] is not enabled, enable it */
3221 if ((val & 2) == 0) {
3222 val = sInB(CtlP->MReg2IO);
3223 sOutB(CtlP->MReg2IO, (val & 0xfc) | (1 & 0x03));
3224 sOutB(CtlP->MBaseIO, (unsigned char) (addr >> 6));
3230 sOutB(addr + chan, 0); /* apply or remove reset */
3235 * Not an official SSCI function, but how to reset RocketModems.
3238 static void sPCIModemReset(CONTROLLER_T * CtlP, int chan, int on)
3242 addr = CtlP->AiopIO[0] + 0x40; /* 2nd AIOP */
3245 sOutB(addr + chan, 0); /* apply or remove reset */
3248 /* Resets the speaker controller on RocketModem II and III devices */
3249 static void rmSpeakerReset(CONTROLLER_T * CtlP, unsigned long model)
3253 /* RocketModem II speaker control is at the 8th port location of offset 0x40 */
3254 if ((model == MODEL_RP4M) || (model == MODEL_RP6M)) {
3255 addr = CtlP->AiopIO[0] + 0x4F;
3259 /* RocketModem III speaker control is at the 1st port location of offset 0x80 */
3260 if ((model == MODEL_UPCI_RM3_8PORT)
3261 || (model == MODEL_UPCI_RM3_4PORT)) {
3262 addr = CtlP->AiopIO[0] + 0x88;
3267 /* Returns the line number given the controller (board), aiop and channel number */
3268 static unsigned char GetLineNumber(int ctrl, int aiop, int ch)
3270 return lineNumbers[(ctrl << 5) | (aiop << 3) | ch];
3274 * Stores the line number associated with a given controller (board), aiop
3275 * and channel number.
3276 * Returns: The line number assigned
3278 static unsigned char SetLineNumber(int ctrl, int aiop, int ch)
3280 lineNumbers[(ctrl << 5) | (aiop << 3) | ch] = nextLineNumber++;
3281 return (nextLineNumber - 1);