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 <linux/bitops.h>
87 #include <linux/spinlock.h>
88 #include <linux/init.h>
90 /****** RocketPort includes ******/
92 #include "rocket_int.h"
95 #define ROCKET_VERSION "2.09"
96 #define ROCKET_DATE "12-June-2003"
98 /****** RocketPort Local Variables ******/
100 static void rp_do_poll(unsigned long dummy);
102 static struct tty_driver *rocket_driver;
104 static struct rocket_version driver_version = {
105 ROCKET_VERSION, ROCKET_DATE
108 static struct r_port *rp_table[MAX_RP_PORTS]; /* The main repository of serial port state information. */
109 static unsigned int xmit_flags[NUM_BOARDS]; /* Bit significant, indicates port had data to transmit. */
110 /* eg. Bit 0 indicates port 0 has xmit data, ... */
111 static atomic_t rp_num_ports_open; /* Number of serial ports open */
112 static DEFINE_TIMER(rocket_timer, rp_do_poll, 0, 0);
114 static unsigned long board1; /* ISA addresses, retrieved from rocketport.conf */
115 static unsigned long board2;
116 static unsigned long board3;
117 static unsigned long board4;
118 static unsigned long controller;
119 static int support_low_speed;
120 static unsigned long modem1;
121 static unsigned long modem2;
122 static unsigned long modem3;
123 static unsigned long modem4;
124 static unsigned long pc104_1[8];
125 static unsigned long pc104_2[8];
126 static unsigned long pc104_3[8];
127 static unsigned long pc104_4[8];
128 static unsigned long *pc104[4] = { pc104_1, pc104_2, pc104_3, pc104_4 };
130 static int rp_baud_base[NUM_BOARDS]; /* Board config info (Someday make a per-board structure) */
131 static unsigned long rcktpt_io_addr[NUM_BOARDS];
132 static int rcktpt_type[NUM_BOARDS];
133 static int is_PCI[NUM_BOARDS];
134 static rocketModel_t rocketModel[NUM_BOARDS];
135 static int max_board;
138 * The following arrays define the interrupt bits corresponding to each AIOP.
139 * These bits are different between the ISA and regular PCI boards and the
140 * Universal PCI boards.
143 static Word_t aiop_intr_bits[AIOP_CTL_SIZE] = {
150 static Word_t upci_aiop_intr_bits[AIOP_CTL_SIZE] = {
151 UPCI_AIOP_INTR_BIT_0,
152 UPCI_AIOP_INTR_BIT_1,
153 UPCI_AIOP_INTR_BIT_2,
157 static Byte_t RData[RDATASIZE] = {
158 0x00, 0x09, 0xf6, 0x82,
159 0x02, 0x09, 0x86, 0xfb,
160 0x04, 0x09, 0x00, 0x0a,
161 0x06, 0x09, 0x01, 0x0a,
162 0x08, 0x09, 0x8a, 0x13,
163 0x0a, 0x09, 0xc5, 0x11,
164 0x0c, 0x09, 0x86, 0x85,
165 0x0e, 0x09, 0x20, 0x0a,
166 0x10, 0x09, 0x21, 0x0a,
167 0x12, 0x09, 0x41, 0xff,
168 0x14, 0x09, 0x82, 0x00,
169 0x16, 0x09, 0x82, 0x7b,
170 0x18, 0x09, 0x8a, 0x7d,
171 0x1a, 0x09, 0x88, 0x81,
172 0x1c, 0x09, 0x86, 0x7a,
173 0x1e, 0x09, 0x84, 0x81,
174 0x20, 0x09, 0x82, 0x7c,
175 0x22, 0x09, 0x0a, 0x0a
178 static Byte_t RRegData[RREGDATASIZE] = {
179 0x00, 0x09, 0xf6, 0x82, /* 00: Stop Rx processor */
180 0x08, 0x09, 0x8a, 0x13, /* 04: Tx software flow control */
181 0x0a, 0x09, 0xc5, 0x11, /* 08: XON char */
182 0x0c, 0x09, 0x86, 0x85, /* 0c: XANY */
183 0x12, 0x09, 0x41, 0xff, /* 10: Rx mask char */
184 0x14, 0x09, 0x82, 0x00, /* 14: Compare/Ignore #0 */
185 0x16, 0x09, 0x82, 0x7b, /* 18: Compare #1 */
186 0x18, 0x09, 0x8a, 0x7d, /* 1c: Compare #2 */
187 0x1a, 0x09, 0x88, 0x81, /* 20: Interrupt #1 */
188 0x1c, 0x09, 0x86, 0x7a, /* 24: Ignore/Replace #1 */
189 0x1e, 0x09, 0x84, 0x81, /* 28: Interrupt #2 */
190 0x20, 0x09, 0x82, 0x7c, /* 2c: Ignore/Replace #2 */
191 0x22, 0x09, 0x0a, 0x0a /* 30: Rx FIFO Enable */
194 static CONTROLLER_T sController[CTL_SIZE] = {
195 {-1, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, {0, 0, 0, 0},
196 {0, 0, 0, 0}, {-1, -1, -1, -1}, {0, 0, 0, 0}},
197 {-1, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, {0, 0, 0, 0},
198 {0, 0, 0, 0}, {-1, -1, -1, -1}, {0, 0, 0, 0}},
199 {-1, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, {0, 0, 0, 0},
200 {0, 0, 0, 0}, {-1, -1, -1, -1}, {0, 0, 0, 0}},
201 {-1, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, {0, 0, 0, 0},
202 {0, 0, 0, 0}, {-1, -1, -1, -1}, {0, 0, 0, 0}}
205 static Byte_t sBitMapClrTbl[8] = {
206 0xfe, 0xfd, 0xfb, 0xf7, 0xef, 0xdf, 0xbf, 0x7f
209 static Byte_t sBitMapSetTbl[8] = {
210 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80
213 static int sClockPrescale = 0x14;
216 * Line number is the ttySIx number (x), the Minor number. We
217 * assign them sequentially, starting at zero. The following
218 * array keeps track of the line number assigned to a given board/aiop/channel.
220 static unsigned char lineNumbers[MAX_RP_PORTS];
221 static unsigned long nextLineNumber;
223 /***** RocketPort Static Prototypes *********/
224 static int __init init_ISA(int i);
225 static void rp_wait_until_sent(struct tty_struct *tty, int timeout);
226 static void rp_flush_buffer(struct tty_struct *tty);
227 static void rmSpeakerReset(CONTROLLER_T * CtlP, unsigned long model);
228 static unsigned char GetLineNumber(int ctrl, int aiop, int ch);
229 static unsigned char SetLineNumber(int ctrl, int aiop, int ch);
230 static void rp_start(struct tty_struct *tty);
231 static int sInitChan(CONTROLLER_T * CtlP, CHANNEL_T * ChP, int AiopNum,
233 static void sSetInterfaceMode(CHANNEL_T * ChP, Byte_t mode);
234 static void sFlushRxFIFO(CHANNEL_T * ChP);
235 static void sFlushTxFIFO(CHANNEL_T * ChP);
236 static void sEnInterrupts(CHANNEL_T * ChP, Word_t Flags);
237 static void sDisInterrupts(CHANNEL_T * ChP, Word_t Flags);
238 static void sModemReset(CONTROLLER_T * CtlP, int chan, int on);
239 static void sPCIModemReset(CONTROLLER_T * CtlP, int chan, int on);
240 static int sWriteTxPrioByte(CHANNEL_T * ChP, Byte_t Data);
241 static int sPCIInitController(CONTROLLER_T * CtlP, int CtlNum,
242 ByteIO_t * AiopIOList, int AiopIOListSize,
243 WordIO_t ConfigIO, int IRQNum, Byte_t Frequency,
244 int PeriodicOnly, int altChanRingIndicator,
246 static int sInitController(CONTROLLER_T * CtlP, int CtlNum, ByteIO_t MudbacIO,
247 ByteIO_t * AiopIOList, int AiopIOListSize,
248 int IRQNum, Byte_t Frequency, int PeriodicOnly);
249 static int sReadAiopID(ByteIO_t io);
250 static int sReadAiopNumChan(WordIO_t io);
252 MODULE_AUTHOR("Theodore Ts'o");
253 MODULE_DESCRIPTION("Comtrol RocketPort driver");
254 module_param(board1, ulong, 0);
255 MODULE_PARM_DESC(board1, "I/O port for (ISA) board #1");
256 module_param(board2, ulong, 0);
257 MODULE_PARM_DESC(board2, "I/O port for (ISA) board #2");
258 module_param(board3, ulong, 0);
259 MODULE_PARM_DESC(board3, "I/O port for (ISA) board #3");
260 module_param(board4, ulong, 0);
261 MODULE_PARM_DESC(board4, "I/O port for (ISA) board #4");
262 module_param(controller, ulong, 0);
263 MODULE_PARM_DESC(controller, "I/O port for (ISA) rocketport controller");
264 module_param(support_low_speed, bool, 0);
265 MODULE_PARM_DESC(support_low_speed, "1 means support 50 baud, 0 means support 460400 baud");
266 module_param(modem1, ulong, 0);
267 MODULE_PARM_DESC(modem1, "1 means (ISA) board #1 is a RocketModem");
268 module_param(modem2, ulong, 0);
269 MODULE_PARM_DESC(modem2, "1 means (ISA) board #2 is a RocketModem");
270 module_param(modem3, ulong, 0);
271 MODULE_PARM_DESC(modem3, "1 means (ISA) board #3 is a RocketModem");
272 module_param(modem4, ulong, 0);
273 MODULE_PARM_DESC(modem4, "1 means (ISA) board #4 is a RocketModem");
274 module_param_array(pc104_1, ulong, NULL, 0);
275 MODULE_PARM_DESC(pc104_1, "set interface types for ISA(PC104) board #1 (e.g. pc104_1=232,232,485,485,...");
276 module_param_array(pc104_2, ulong, NULL, 0);
277 MODULE_PARM_DESC(pc104_2, "set interface types for ISA(PC104) board #2 (e.g. pc104_2=232,232,485,485,...");
278 module_param_array(pc104_3, ulong, NULL, 0);
279 MODULE_PARM_DESC(pc104_3, "set interface types for ISA(PC104) board #3 (e.g. pc104_3=232,232,485,485,...");
280 module_param_array(pc104_4, ulong, NULL, 0);
281 MODULE_PARM_DESC(pc104_4, "set interface types for ISA(PC104) board #4 (e.g. pc104_4=232,232,485,485,...");
283 static int rp_init(void);
284 static void rp_cleanup_module(void);
286 module_init(rp_init);
287 module_exit(rp_cleanup_module);
290 MODULE_LICENSE("Dual BSD/GPL");
292 /*************************************************************************/
293 /* Module code starts here */
295 static inline int rocket_paranoia_check(struct r_port *info,
298 #ifdef ROCKET_PARANOIA_CHECK
301 if (info->magic != RPORT_MAGIC) {
302 printk(KERN_WARNING "Warning: bad magic number for rocketport "
303 "struct in %s\n", routine);
311 /* Serial port receive data function. Called (from timer poll) when an AIOPIC signals
312 * that receive data is present on a serial port. Pulls data from FIFO, moves it into the
315 static void rp_do_receive(struct r_port *info,
316 struct tty_struct *tty,
317 CHANNEL_t * cp, unsigned int ChanStatus)
319 unsigned int CharNStat;
320 int ToRecv, wRecv, space;
323 ToRecv = sGetRxCnt(cp);
324 #ifdef ROCKET_DEBUG_INTR
325 printk(KERN_INFO "rp_do_receive(%d)...\n", ToRecv);
331 * if status indicates there are errored characters in the
332 * FIFO, then enter status mode (a word in FIFO holds
333 * character and status).
335 if (ChanStatus & (RXFOVERFL | RXBREAK | RXFRAME | RXPARITY)) {
336 if (!(ChanStatus & STATMODE)) {
337 #ifdef ROCKET_DEBUG_RECEIVE
338 printk(KERN_INFO "Entering STATMODE...\n");
340 ChanStatus |= STATMODE;
346 * if we previously entered status mode, then read down the
347 * FIFO one word at a time, pulling apart the character and
348 * the status. Update error counters depending on status
350 if (ChanStatus & STATMODE) {
351 #ifdef ROCKET_DEBUG_RECEIVE
352 printk(KERN_INFO "Ignore %x, read %x...\n",
353 info->ignore_status_mask, info->read_status_mask);
358 CharNStat = sInW(sGetTxRxDataIO(cp));
359 #ifdef ROCKET_DEBUG_RECEIVE
360 printk(KERN_INFO "%x...\n", CharNStat);
362 if (CharNStat & STMBREAKH)
363 CharNStat &= ~(STMFRAMEH | STMPARITYH);
364 if (CharNStat & info->ignore_status_mask) {
368 CharNStat &= info->read_status_mask;
369 if (CharNStat & STMBREAKH)
371 else if (CharNStat & STMPARITYH)
373 else if (CharNStat & STMFRAMEH)
375 else if (CharNStat & STMRCVROVRH)
379 tty_insert_flip_char(tty, CharNStat & 0xff, flag);
384 * after we've emptied the FIFO in status mode, turn
385 * status mode back off
387 if (sGetRxCnt(cp) == 0) {
388 #ifdef ROCKET_DEBUG_RECEIVE
389 printk(KERN_INFO "Status mode off.\n");
391 sDisRxStatusMode(cp);
395 * we aren't in status mode, so read down the FIFO two
396 * characters at time by doing repeated word IO
399 space = tty_prepare_flip_string(tty, &cbuf, ToRecv);
400 if (space < ToRecv) {
401 #ifdef ROCKET_DEBUG_RECEIVE
402 printk(KERN_INFO "rp_do_receive:insufficient space ToRecv=%d space=%d\n", ToRecv, space);
410 sInStrW(sGetTxRxDataIO(cp), (unsigned short *) cbuf, wRecv);
412 cbuf[ToRecv - 1] = sInB(sGetTxRxDataIO(cp));
414 /* Push the data up to the tty layer */
415 tty_flip_buffer_push(tty);
419 * Serial port transmit data function. Called from the timer polling loop as a
420 * result of a bit set in xmit_flags[], indicating data (from the tty layer) is ready
421 * to be sent out the serial port. Data is buffered in rp_table[line].xmit_buf, it is
422 * moved to the port's xmit FIFO. *info is critical data, protected by spinlocks.
424 static void rp_do_transmit(struct r_port *info)
427 CHANNEL_t *cp = &info->channel;
428 struct tty_struct *tty;
431 #ifdef ROCKET_DEBUG_INTR
432 printk(KERN_DEBUG "%s\n", __func__);
437 printk(KERN_WARNING "rp: WARNING %s called with "
438 "info->tty==NULL\n", __func__);
439 clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
443 spin_lock_irqsave(&info->slock, flags);
445 info->xmit_fifo_room = TXFIFO_SIZE - sGetTxCnt(cp);
447 /* Loop sending data to FIFO until done or FIFO full */
449 if (tty->stopped || tty->hw_stopped)
451 c = min(info->xmit_fifo_room, min(info->xmit_cnt, XMIT_BUF_SIZE - info->xmit_tail));
452 if (c <= 0 || info->xmit_fifo_room <= 0)
454 sOutStrW(sGetTxRxDataIO(cp), (unsigned short *) (info->xmit_buf + info->xmit_tail), c / 2);
456 sOutB(sGetTxRxDataIO(cp), info->xmit_buf[info->xmit_tail + c - 1]);
457 info->xmit_tail += c;
458 info->xmit_tail &= XMIT_BUF_SIZE - 1;
460 info->xmit_fifo_room -= c;
461 #ifdef ROCKET_DEBUG_INTR
462 printk(KERN_INFO "tx %d chars...\n", c);
466 if (info->xmit_cnt == 0)
467 clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
469 if (info->xmit_cnt < WAKEUP_CHARS) {
471 #ifdef ROCKETPORT_HAVE_POLL_WAIT
472 wake_up_interruptible(&tty->poll_wait);
476 spin_unlock_irqrestore(&info->slock, flags);
478 #ifdef ROCKET_DEBUG_INTR
479 printk(KERN_DEBUG "(%d,%d,%d,%d)...\n", info->xmit_cnt, info->xmit_head,
480 info->xmit_tail, info->xmit_fifo_room);
485 * Called when a serial port signals it has read data in it's RX FIFO.
486 * It checks what interrupts are pending and services them, including
487 * receiving serial data.
489 static void rp_handle_port(struct r_port *info)
492 struct tty_struct *tty;
493 unsigned int IntMask, ChanStatus;
498 if ((info->flags & ROCKET_INITIALIZED) == 0) {
499 printk(KERN_WARNING "rp: WARNING: rp_handle_port called with "
500 "info->flags & NOT_INIT\n");
504 printk(KERN_WARNING "rp: WARNING: rp_handle_port called with "
505 "info->tty==NULL\n");
511 IntMask = sGetChanIntID(cp) & info->intmask;
512 #ifdef ROCKET_DEBUG_INTR
513 printk(KERN_INFO "rp_interrupt %02x...\n", IntMask);
515 ChanStatus = sGetChanStatus(cp);
516 if (IntMask & RXF_TRIG) { /* Rx FIFO trigger level */
517 rp_do_receive(info, tty, cp, ChanStatus);
519 if (IntMask & DELTA_CD) { /* CD change */
520 #if (defined(ROCKET_DEBUG_OPEN) || defined(ROCKET_DEBUG_INTR) || defined(ROCKET_DEBUG_HANGUP))
521 printk(KERN_INFO "ttyR%d CD now %s...\n", info->line,
522 (ChanStatus & CD_ACT) ? "on" : "off");
524 if (!(ChanStatus & CD_ACT) && info->cd_status) {
525 #ifdef ROCKET_DEBUG_HANGUP
526 printk(KERN_INFO "CD drop, calling hangup.\n");
530 info->cd_status = (ChanStatus & CD_ACT) ? 1 : 0;
531 wake_up_interruptible(&info->open_wait);
533 #ifdef ROCKET_DEBUG_INTR
534 if (IntMask & DELTA_CTS) { /* CTS change */
535 printk(KERN_INFO "CTS change...\n");
537 if (IntMask & DELTA_DSR) { /* DSR change */
538 printk(KERN_INFO "DSR change...\n");
544 * The top level polling routine. Repeats every 1/100 HZ (10ms).
546 static void rp_do_poll(unsigned long dummy)
549 int ctrl, aiop, ch, line;
550 unsigned int xmitmask, i;
551 unsigned int CtlMask;
552 unsigned char AiopMask;
555 /* Walk through all the boards (ctrl's) */
556 for (ctrl = 0; ctrl < max_board; ctrl++) {
557 if (rcktpt_io_addr[ctrl] <= 0)
560 /* Get a ptr to the board's control struct */
561 ctlp = sCtlNumToCtlPtr(ctrl);
563 /* Get the interrupt status from the board */
565 if (ctlp->BusType == isPCI)
566 CtlMask = sPCIGetControllerIntStatus(ctlp);
569 CtlMask = sGetControllerIntStatus(ctlp);
571 /* Check if any AIOP read bits are set */
572 for (aiop = 0; CtlMask; aiop++) {
573 bit = ctlp->AiopIntrBits[aiop];
576 AiopMask = sGetAiopIntStatus(ctlp, aiop);
578 /* Check if any port read bits are set */
579 for (ch = 0; AiopMask; AiopMask >>= 1, ch++) {
582 /* Get the line number (/dev/ttyRx number). */
583 /* Read the data from the port. */
584 line = GetLineNumber(ctrl, aiop, ch);
585 rp_handle_port(rp_table[line]);
591 xmitmask = xmit_flags[ctrl];
594 * xmit_flags contains bit-significant flags, indicating there is data
595 * to xmit on the port. Bit 0 is port 0 on this board, bit 1 is port
596 * 1, ... (32 total possible). The variable i has the aiop and ch
597 * numbers encoded in it (port 0-7 are aiop0, 8-15 are aiop1, etc).
600 for (i = 0; i < rocketModel[ctrl].numPorts; i++) {
601 if (xmitmask & (1 << i)) {
602 aiop = (i & 0x18) >> 3;
604 line = GetLineNumber(ctrl, aiop, ch);
605 rp_do_transmit(rp_table[line]);
612 * Reset the timer so we get called at the next clock tick (10ms).
614 if (atomic_read(&rp_num_ports_open))
615 mod_timer(&rocket_timer, jiffies + POLL_PERIOD);
619 * Initializes the r_port structure for a port, as well as enabling the port on
621 * Inputs: board, aiop, chan numbers
623 static void init_r_port(int board, int aiop, int chan, struct pci_dev *pci_dev)
630 /* Get the next available line number */
631 line = SetLineNumber(board, aiop, chan);
633 ctlp = sCtlNumToCtlPtr(board);
635 /* Get a r_port struct for the port, fill it in and save it globally, indexed by line number */
636 info = kzalloc(sizeof (struct r_port), GFP_KERNEL);
638 printk(KERN_ERR "Couldn't allocate info struct for line #%d\n",
643 info->magic = RPORT_MAGIC;
649 info->closing_wait = 3000;
650 info->close_delay = 50;
651 init_waitqueue_head(&info->open_wait);
652 init_completion(&info->close_wait);
653 info->flags &= ~ROCKET_MODE_MASK;
654 switch (pc104[board][line]) {
656 info->flags |= ROCKET_MODE_RS422;
659 info->flags |= ROCKET_MODE_RS485;
663 info->flags |= ROCKET_MODE_RS232;
667 info->intmask = RXF_TRIG | TXFIFO_MT | SRC_INT | DELTA_CD | DELTA_CTS | DELTA_DSR;
668 if (sInitChan(ctlp, &info->channel, aiop, chan) == 0) {
669 printk(KERN_ERR "RocketPort sInitChan(%d, %d, %d) failed!\n",
675 rocketMode = info->flags & ROCKET_MODE_MASK;
677 if ((info->flags & ROCKET_RTS_TOGGLE) || (rocketMode == ROCKET_MODE_RS485))
678 sEnRTSToggle(&info->channel);
680 sDisRTSToggle(&info->channel);
682 if (ctlp->boardType == ROCKET_TYPE_PC104) {
683 switch (rocketMode) {
684 case ROCKET_MODE_RS485:
685 sSetInterfaceMode(&info->channel, InterfaceModeRS485);
687 case ROCKET_MODE_RS422:
688 sSetInterfaceMode(&info->channel, InterfaceModeRS422);
690 case ROCKET_MODE_RS232:
692 if (info->flags & ROCKET_RTS_TOGGLE)
693 sSetInterfaceMode(&info->channel, InterfaceModeRS232T);
695 sSetInterfaceMode(&info->channel, InterfaceModeRS232);
699 spin_lock_init(&info->slock);
700 mutex_init(&info->write_mtx);
701 rp_table[line] = info;
702 tty_register_device(rocket_driver, line, pci_dev ? &pci_dev->dev :
707 * Configures a rocketport port according to its termio settings. Called from
708 * user mode into the driver (exception handler). *info CD manipulation is spinlock protected.
710 static void configure_r_port(struct r_port *info,
711 struct ktermios *old_termios)
716 int bits, baud, divisor;
719 if (!info->tty || !info->tty->termios)
722 cflag = info->tty->termios->c_cflag;
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 info->tty->termios->c_cflag &= ~CBAUD;
758 info->tty->termios->c_cflag |=
759 (old_termios->c_cflag & CBAUD);
760 baud = tty_get_baud_rate(info->tty);
763 divisor = (rp_baud_base[info->board] / baud) - 1;
765 if (divisor >= 8192 || divisor < 0) {
767 divisor = (rp_baud_base[info->board] / baud) - 1;
769 info->cps = baud / bits;
770 sSetBaud(cp, divisor);
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;
1205 if (cflag == old_termios->c_cflag)
1209 * This driver doesn't support CS5 or CS6
1211 if (((cflag & CSIZE) == CS5) || ((cflag & CSIZE) == CS6))
1212 tty->termios->c_cflag =
1213 ((cflag & ~CSIZE) | (old_termios->c_cflag & CSIZE));
1215 configure_r_port(info, old_termios);
1217 cp = &info->channel;
1219 /* Handle transition to B0 status */
1220 if ((old_termios->c_cflag & CBAUD) && !(tty->termios->c_cflag & CBAUD)) {
1225 /* Handle transition away from B0 status */
1226 if (!(old_termios->c_cflag & CBAUD) && (tty->termios->c_cflag & CBAUD)) {
1227 if (!tty->hw_stopped || !(tty->termios->c_cflag & CRTSCTS))
1232 if ((old_termios->c_cflag & CRTSCTS) && !(tty->termios->c_cflag & CRTSCTS)) {
1233 tty->hw_stopped = 0;
1238 static void rp_break(struct tty_struct *tty, int break_state)
1240 struct r_port *info = (struct r_port *) tty->driver_data;
1241 unsigned long flags;
1243 if (rocket_paranoia_check(info, "rp_break"))
1246 spin_lock_irqsave(&info->slock, flags);
1247 if (break_state == -1)
1248 sSendBreak(&info->channel);
1250 sClrBreak(&info->channel);
1251 spin_unlock_irqrestore(&info->slock, flags);
1255 * sGetChanRI used to be a macro in rocket_int.h. When the functionality for
1256 * the UPCI boards was added, it was decided to make this a function because
1257 * the macro was getting too complicated. All cases except the first one
1258 * (UPCIRingInd) are taken directly from the original macro.
1260 static int sGetChanRI(CHANNEL_T * ChP)
1262 CONTROLLER_t *CtlP = ChP->CtlP;
1263 int ChanNum = ChP->ChanNum;
1266 if (CtlP->UPCIRingInd)
1267 RingInd = !(sInB(CtlP->UPCIRingInd) & sBitMapSetTbl[ChanNum]);
1268 else if (CtlP->AltChanRingIndicator)
1269 RingInd = sInB((ByteIO_t) (ChP->ChanStat + 8)) & DSR_ACT;
1270 else if (CtlP->boardType == ROCKET_TYPE_PC104)
1271 RingInd = !(sInB(CtlP->AiopIO[3]) & sBitMapSetTbl[ChanNum]);
1276 /********************************************************************************************/
1277 /* Here are the routines used by rp_ioctl. These are all called from exception handlers. */
1280 * Returns the state of the serial modem control lines. These next 2 functions
1281 * are the way kernel versions > 2.5 handle modem control lines rather than IOCTLs.
1283 static int rp_tiocmget(struct tty_struct *tty, struct file *file)
1285 struct r_port *info = (struct r_port *)tty->driver_data;
1286 unsigned int control, result, ChanStatus;
1288 ChanStatus = sGetChanStatusLo(&info->channel);
1289 control = info->channel.TxControl[3];
1290 result = ((control & SET_RTS) ? TIOCM_RTS : 0) |
1291 ((control & SET_DTR) ? TIOCM_DTR : 0) |
1292 ((ChanStatus & CD_ACT) ? TIOCM_CAR : 0) |
1293 (sGetChanRI(&info->channel) ? TIOCM_RNG : 0) |
1294 ((ChanStatus & DSR_ACT) ? TIOCM_DSR : 0) |
1295 ((ChanStatus & CTS_ACT) ? TIOCM_CTS : 0);
1301 * Sets the modem control lines
1303 static int rp_tiocmset(struct tty_struct *tty, struct file *file,
1304 unsigned int set, unsigned int clear)
1306 struct r_port *info = (struct r_port *)tty->driver_data;
1308 if (set & TIOCM_RTS)
1309 info->channel.TxControl[3] |= SET_RTS;
1310 if (set & TIOCM_DTR)
1311 info->channel.TxControl[3] |= SET_DTR;
1312 if (clear & TIOCM_RTS)
1313 info->channel.TxControl[3] &= ~SET_RTS;
1314 if (clear & TIOCM_DTR)
1315 info->channel.TxControl[3] &= ~SET_DTR;
1317 sOutDW(info->channel.IndexAddr, *(DWord_t *) & (info->channel.TxControl[0]));
1321 static int get_config(struct r_port *info, struct rocket_config __user *retinfo)
1323 struct rocket_config tmp;
1327 memset(&tmp, 0, sizeof (tmp));
1328 tmp.line = info->line;
1329 tmp.flags = info->flags;
1330 tmp.close_delay = info->close_delay;
1331 tmp.closing_wait = info->closing_wait;
1332 tmp.port = rcktpt_io_addr[(info->line >> 5) & 3];
1334 if (copy_to_user(retinfo, &tmp, sizeof (*retinfo)))
1339 static int set_config(struct r_port *info, struct rocket_config __user *new_info)
1341 struct rocket_config new_serial;
1343 if (copy_from_user(&new_serial, new_info, sizeof (new_serial)))
1346 if (!capable(CAP_SYS_ADMIN))
1348 if ((new_serial.flags & ~ROCKET_USR_MASK) != (info->flags & ~ROCKET_USR_MASK))
1350 info->flags = ((info->flags & ~ROCKET_USR_MASK) | (new_serial.flags & ROCKET_USR_MASK));
1351 configure_r_port(info, NULL);
1355 info->flags = ((info->flags & ~ROCKET_FLAGS) | (new_serial.flags & ROCKET_FLAGS));
1356 info->close_delay = new_serial.close_delay;
1357 info->closing_wait = new_serial.closing_wait;
1359 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_HI)
1360 info->tty->alt_speed = 57600;
1361 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_VHI)
1362 info->tty->alt_speed = 115200;
1363 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_SHI)
1364 info->tty->alt_speed = 230400;
1365 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_WARP)
1366 info->tty->alt_speed = 460800;
1368 configure_r_port(info, NULL);
1373 * This function fills in a rocket_ports struct with information
1374 * about what boards/ports are in the system. This info is passed
1375 * to user space. See setrocket.c where the info is used to create
1376 * the /dev/ttyRx ports.
1378 static int get_ports(struct r_port *info, struct rocket_ports __user *retports)
1380 struct rocket_ports tmp;
1385 memset(&tmp, 0, sizeof (tmp));
1386 tmp.tty_major = rocket_driver->major;
1388 for (board = 0; board < 4; board++) {
1389 tmp.rocketModel[board].model = rocketModel[board].model;
1390 strcpy(tmp.rocketModel[board].modelString, rocketModel[board].modelString);
1391 tmp.rocketModel[board].numPorts = rocketModel[board].numPorts;
1392 tmp.rocketModel[board].loadrm2 = rocketModel[board].loadrm2;
1393 tmp.rocketModel[board].startingPortNumber = rocketModel[board].startingPortNumber;
1395 if (copy_to_user(retports, &tmp, sizeof (*retports)))
1400 static int reset_rm2(struct r_port *info, void __user *arg)
1404 if (copy_from_user(&reset, arg, sizeof (int)))
1409 if (rcktpt_type[info->board] != ROCKET_TYPE_MODEMII &&
1410 rcktpt_type[info->board] != ROCKET_TYPE_MODEMIII)
1413 if (info->ctlp->BusType == isISA)
1414 sModemReset(info->ctlp, info->chan, reset);
1416 sPCIModemReset(info->ctlp, info->chan, reset);
1421 static int get_version(struct r_port *info, struct rocket_version __user *retvers)
1423 if (copy_to_user(retvers, &driver_version, sizeof (*retvers)))
1428 /* IOCTL call handler into the driver */
1429 static int rp_ioctl(struct tty_struct *tty, struct file *file,
1430 unsigned int cmd, unsigned long arg)
1432 struct r_port *info = (struct r_port *) tty->driver_data;
1433 void __user *argp = (void __user *)arg;
1435 if (cmd != RCKP_GET_PORTS && rocket_paranoia_check(info, "rp_ioctl"))
1439 case RCKP_GET_STRUCT:
1440 if (copy_to_user(argp, info, sizeof (struct r_port)))
1443 case RCKP_GET_CONFIG:
1444 return get_config(info, argp);
1445 case RCKP_SET_CONFIG:
1446 return set_config(info, argp);
1447 case RCKP_GET_PORTS:
1448 return get_ports(info, argp);
1449 case RCKP_RESET_RM2:
1450 return reset_rm2(info, argp);
1451 case RCKP_GET_VERSION:
1452 return get_version(info, argp);
1454 return -ENOIOCTLCMD;
1459 static void rp_send_xchar(struct tty_struct *tty, char ch)
1461 struct r_port *info = (struct r_port *) tty->driver_data;
1464 if (rocket_paranoia_check(info, "rp_send_xchar"))
1467 cp = &info->channel;
1469 sWriteTxPrioByte(cp, ch);
1471 sWriteTxByte(sGetTxRxDataIO(cp), ch);
1474 static void rp_throttle(struct tty_struct *tty)
1476 struct r_port *info = (struct r_port *) tty->driver_data;
1479 #ifdef ROCKET_DEBUG_THROTTLE
1480 printk(KERN_INFO "throttle %s: %d....\n", tty->name,
1481 tty->ldisc.chars_in_buffer(tty));
1484 if (rocket_paranoia_check(info, "rp_throttle"))
1487 cp = &info->channel;
1489 rp_send_xchar(tty, STOP_CHAR(tty));
1491 sClrRTS(&info->channel);
1494 static void rp_unthrottle(struct tty_struct *tty)
1496 struct r_port *info = (struct r_port *) tty->driver_data;
1498 #ifdef ROCKET_DEBUG_THROTTLE
1499 printk(KERN_INFO "unthrottle %s: %d....\n", tty->name,
1500 tty->ldisc.chars_in_buffer(tty));
1503 if (rocket_paranoia_check(info, "rp_throttle"))
1506 cp = &info->channel;
1508 rp_send_xchar(tty, START_CHAR(tty));
1510 sSetRTS(&info->channel);
1514 * ------------------------------------------------------------
1515 * rp_stop() and rp_start()
1517 * This routines are called before setting or resetting tty->stopped.
1518 * They enable or disable transmitter interrupts, as necessary.
1519 * ------------------------------------------------------------
1521 static void rp_stop(struct tty_struct *tty)
1523 struct r_port *info = (struct r_port *) tty->driver_data;
1525 #ifdef ROCKET_DEBUG_FLOW
1526 printk(KERN_INFO "stop %s: %d %d....\n", tty->name,
1527 info->xmit_cnt, info->xmit_fifo_room);
1530 if (rocket_paranoia_check(info, "rp_stop"))
1533 if (sGetTxCnt(&info->channel))
1534 sDisTransmit(&info->channel);
1537 static void rp_start(struct tty_struct *tty)
1539 struct r_port *info = (struct r_port *) tty->driver_data;
1541 #ifdef ROCKET_DEBUG_FLOW
1542 printk(KERN_INFO "start %s: %d %d....\n", tty->name,
1543 info->xmit_cnt, info->xmit_fifo_room);
1546 if (rocket_paranoia_check(info, "rp_stop"))
1549 sEnTransmit(&info->channel);
1550 set_bit((info->aiop * 8) + info->chan,
1551 (void *) &xmit_flags[info->board]);
1555 * rp_wait_until_sent() --- wait until the transmitter is empty
1557 static void rp_wait_until_sent(struct tty_struct *tty, int timeout)
1559 struct r_port *info = (struct r_port *) tty->driver_data;
1561 unsigned long orig_jiffies;
1562 int check_time, exit_time;
1565 if (rocket_paranoia_check(info, "rp_wait_until_sent"))
1568 cp = &info->channel;
1570 orig_jiffies = jiffies;
1571 #ifdef ROCKET_DEBUG_WAIT_UNTIL_SENT
1572 printk(KERN_INFO "In RP_wait_until_sent(%d) (jiff=%lu)...\n", timeout,
1574 printk(KERN_INFO "cps=%d...\n", info->cps);
1577 txcnt = sGetTxCnt(cp);
1579 if (sGetChanStatusLo(cp) & TXSHRMT)
1581 check_time = (HZ / info->cps) / 5;
1583 check_time = HZ * txcnt / info->cps;
1586 exit_time = orig_jiffies + timeout - jiffies;
1589 if (exit_time < check_time)
1590 check_time = exit_time;
1592 if (check_time == 0)
1594 #ifdef ROCKET_DEBUG_WAIT_UNTIL_SENT
1595 printk(KERN_INFO "txcnt = %d (jiff=%lu,check=%d)...\n", txcnt,
1596 jiffies, check_time);
1598 msleep_interruptible(jiffies_to_msecs(check_time));
1599 if (signal_pending(current))
1602 __set_current_state(TASK_RUNNING);
1603 #ifdef ROCKET_DEBUG_WAIT_UNTIL_SENT
1604 printk(KERN_INFO "txcnt = %d (jiff=%lu)...done\n", txcnt, jiffies);
1609 * rp_hangup() --- called by tty_hangup() when a hangup is signaled.
1611 static void rp_hangup(struct tty_struct *tty)
1614 struct r_port *info = (struct r_port *) tty->driver_data;
1616 if (rocket_paranoia_check(info, "rp_hangup"))
1619 #if (defined(ROCKET_DEBUG_OPEN) || defined(ROCKET_DEBUG_HANGUP))
1620 printk(KERN_INFO "rp_hangup of ttyR%d...\n", info->line);
1622 rp_flush_buffer(tty);
1623 if (info->flags & ROCKET_CLOSING)
1626 atomic_dec(&rp_num_ports_open);
1627 clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
1630 info->flags &= ~ROCKET_NORMAL_ACTIVE;
1633 cp = &info->channel;
1636 sDisInterrupts(cp, (TXINT_EN | MCINT_EN | RXINT_EN | SRCINT_EN | CHANINT_EN));
1638 sDisTxSoftFlowCtl(cp);
1640 info->flags &= ~ROCKET_INITIALIZED;
1642 wake_up_interruptible(&info->open_wait);
1646 * Exception handler - write char routine. The RocketPort driver uses a
1647 * double-buffering strategy, with the twist that if the in-memory CPU
1648 * buffer is empty, and there's space in the transmit FIFO, the
1649 * writing routines will write directly to transmit FIFO.
1650 * Write buffer and counters protected by spinlocks
1652 static void rp_put_char(struct tty_struct *tty, unsigned char ch)
1654 struct r_port *info = (struct r_port *) tty->driver_data;
1656 unsigned long flags;
1658 if (rocket_paranoia_check(info, "rp_put_char"))
1662 * Grab the port write mutex, locking out other processes that try to
1663 * write to this port
1665 mutex_lock(&info->write_mtx);
1667 #ifdef ROCKET_DEBUG_WRITE
1668 printk(KERN_INFO "rp_put_char %c...\n", ch);
1671 spin_lock_irqsave(&info->slock, flags);
1672 cp = &info->channel;
1674 if (!tty->stopped && !tty->hw_stopped && info->xmit_fifo_room == 0)
1675 info->xmit_fifo_room = TXFIFO_SIZE - sGetTxCnt(cp);
1677 if (tty->stopped || tty->hw_stopped || info->xmit_fifo_room == 0 || info->xmit_cnt != 0) {
1678 info->xmit_buf[info->xmit_head++] = ch;
1679 info->xmit_head &= XMIT_BUF_SIZE - 1;
1681 set_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
1683 sOutB(sGetTxRxDataIO(cp), ch);
1684 info->xmit_fifo_room--;
1686 spin_unlock_irqrestore(&info->slock, flags);
1687 mutex_unlock(&info->write_mtx);
1691 * Exception handler - write routine, called when user app writes to the device.
1692 * A per port write mutex is used to protect from another process writing to
1693 * this port at the same time. This other process could be running on the other CPU
1694 * or get control of the CPU if the copy_from_user() blocks due to a page fault (swapped out).
1695 * Spinlocks protect the info xmit members.
1697 static int rp_write(struct tty_struct *tty,
1698 const unsigned char *buf, int count)
1700 struct r_port *info = (struct r_port *) tty->driver_data;
1702 const unsigned char *b;
1704 unsigned long flags;
1706 if (count <= 0 || rocket_paranoia_check(info, "rp_write"))
1709 if (mutex_lock_interruptible(&info->write_mtx))
1710 return -ERESTARTSYS;
1712 #ifdef ROCKET_DEBUG_WRITE
1713 printk(KERN_INFO "rp_write %d chars...\n", count);
1715 cp = &info->channel;
1717 if (!tty->stopped && !tty->hw_stopped && info->xmit_fifo_room < count)
1718 info->xmit_fifo_room = TXFIFO_SIZE - sGetTxCnt(cp);
1721 * If the write queue for the port is empty, and there is FIFO space, stuff bytes
1722 * into FIFO. Use the write queue for temp storage.
1724 if (!tty->stopped && !tty->hw_stopped && info->xmit_cnt == 0 && info->xmit_fifo_room > 0) {
1725 c = min(count, info->xmit_fifo_room);
1728 /* Push data into FIFO, 2 bytes at a time */
1729 sOutStrW(sGetTxRxDataIO(cp), (unsigned short *) b, c / 2);
1731 /* If there is a byte remaining, write it */
1733 sOutB(sGetTxRxDataIO(cp), b[c - 1]);
1739 spin_lock_irqsave(&info->slock, flags);
1740 info->xmit_fifo_room -= c;
1741 spin_unlock_irqrestore(&info->slock, flags);
1744 /* If count is zero, we wrote it all and are done */
1748 /* Write remaining data into the port's xmit_buf */
1750 if (info->tty == 0) /* Seemingly obligatory check... */
1753 c = min(count, min(XMIT_BUF_SIZE - info->xmit_cnt - 1, XMIT_BUF_SIZE - info->xmit_head));
1758 memcpy(info->xmit_buf + info->xmit_head, b, c);
1760 spin_lock_irqsave(&info->slock, flags);
1762 (info->xmit_head + c) & (XMIT_BUF_SIZE - 1);
1763 info->xmit_cnt += c;
1764 spin_unlock_irqrestore(&info->slock, flags);
1771 if ((retval > 0) && !tty->stopped && !tty->hw_stopped)
1772 set_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
1775 if (info->xmit_cnt < WAKEUP_CHARS) {
1777 #ifdef ROCKETPORT_HAVE_POLL_WAIT
1778 wake_up_interruptible(&tty->poll_wait);
1781 mutex_unlock(&info->write_mtx);
1786 * Return the number of characters that can be sent. We estimate
1787 * only using the in-memory transmit buffer only, and ignore the
1788 * potential space in the transmit FIFO.
1790 static int rp_write_room(struct tty_struct *tty)
1792 struct r_port *info = (struct r_port *) tty->driver_data;
1795 if (rocket_paranoia_check(info, "rp_write_room"))
1798 ret = XMIT_BUF_SIZE - info->xmit_cnt - 1;
1801 #ifdef ROCKET_DEBUG_WRITE
1802 printk(KERN_INFO "rp_write_room returns %d...\n", ret);
1808 * Return the number of characters in the buffer. Again, this only
1809 * counts those characters in the in-memory transmit buffer.
1811 static int rp_chars_in_buffer(struct tty_struct *tty)
1813 struct r_port *info = (struct r_port *) tty->driver_data;
1816 if (rocket_paranoia_check(info, "rp_chars_in_buffer"))
1819 cp = &info->channel;
1821 #ifdef ROCKET_DEBUG_WRITE
1822 printk(KERN_INFO "rp_chars_in_buffer returns %d...\n", info->xmit_cnt);
1824 return info->xmit_cnt;
1828 * Flushes the TX fifo for a port, deletes data in the xmit_buf stored in the
1829 * r_port struct for the port. Note that spinlock are used to protect info members,
1830 * do not call this function if the spinlock is already held.
1832 static void rp_flush_buffer(struct tty_struct *tty)
1834 struct r_port *info = (struct r_port *) tty->driver_data;
1836 unsigned long flags;
1838 if (rocket_paranoia_check(info, "rp_flush_buffer"))
1841 spin_lock_irqsave(&info->slock, flags);
1842 info->xmit_cnt = info->xmit_head = info->xmit_tail = 0;
1843 spin_unlock_irqrestore(&info->slock, flags);
1845 #ifdef ROCKETPORT_HAVE_POLL_WAIT
1846 wake_up_interruptible(&tty->poll_wait);
1850 cp = &info->channel;
1856 static struct pci_device_id __devinitdata rocket_pci_ids[] = {
1857 { PCI_DEVICE(PCI_VENDOR_ID_RP, PCI_ANY_ID) },
1860 MODULE_DEVICE_TABLE(pci, rocket_pci_ids);
1863 * Called when a PCI card is found. Retrieves and stores model information,
1864 * init's aiopic and serial port hardware.
1865 * Inputs: i is the board number (0-n)
1867 static __init int register_PCI(int i, struct pci_dev *dev)
1869 int num_aiops, aiop, max_num_aiops, num_chan, chan;
1870 unsigned int aiopio[MAX_AIOPS_PER_BOARD];
1871 char *str, *board_type;
1875 int altChanRingIndicator = 0;
1876 int ports_per_aiop = 8;
1877 WordIO_t ConfigIO = 0;
1878 ByteIO_t UPCIRingInd = 0;
1880 if (!dev || pci_enable_device(dev))
1883 rcktpt_io_addr[i] = pci_resource_start(dev, 0);
1885 rcktpt_type[i] = ROCKET_TYPE_NORMAL;
1886 rocketModel[i].loadrm2 = 0;
1887 rocketModel[i].startingPortNumber = nextLineNumber;
1889 /* Depending on the model, set up some config variables */
1890 switch (dev->device) {
1891 case PCI_DEVICE_ID_RP4QUAD:
1895 rocketModel[i].model = MODEL_RP4QUAD;
1896 strcpy(rocketModel[i].modelString, "RocketPort 4 port w/quad cable");
1897 rocketModel[i].numPorts = 4;
1899 case PCI_DEVICE_ID_RP8OCTA:
1902 rocketModel[i].model = MODEL_RP8OCTA;
1903 strcpy(rocketModel[i].modelString, "RocketPort 8 port w/octa cable");
1904 rocketModel[i].numPorts = 8;
1906 case PCI_DEVICE_ID_URP8OCTA:
1909 rocketModel[i].model = MODEL_UPCI_RP8OCTA;
1910 strcpy(rocketModel[i].modelString, "RocketPort UPCI 8 port w/octa cable");
1911 rocketModel[i].numPorts = 8;
1913 case PCI_DEVICE_ID_RP8INTF:
1916 rocketModel[i].model = MODEL_RP8INTF;
1917 strcpy(rocketModel[i].modelString, "RocketPort 8 port w/external I/F");
1918 rocketModel[i].numPorts = 8;
1920 case PCI_DEVICE_ID_URP8INTF:
1923 rocketModel[i].model = MODEL_UPCI_RP8INTF;
1924 strcpy(rocketModel[i].modelString, "RocketPort UPCI 8 port w/external I/F");
1925 rocketModel[i].numPorts = 8;
1927 case PCI_DEVICE_ID_RP8J:
1930 rocketModel[i].model = MODEL_RP8J;
1931 strcpy(rocketModel[i].modelString, "RocketPort 8 port w/RJ11 connectors");
1932 rocketModel[i].numPorts = 8;
1934 case PCI_DEVICE_ID_RP4J:
1938 rocketModel[i].model = MODEL_RP4J;
1939 strcpy(rocketModel[i].modelString, "RocketPort 4 port w/RJ45 connectors");
1940 rocketModel[i].numPorts = 4;
1942 case PCI_DEVICE_ID_RP8SNI:
1943 str = "8 (DB78 Custom)";
1945 rocketModel[i].model = MODEL_RP8SNI;
1946 strcpy(rocketModel[i].modelString, "RocketPort 8 port w/ custom DB78");
1947 rocketModel[i].numPorts = 8;
1949 case PCI_DEVICE_ID_RP16SNI:
1950 str = "16 (DB78 Custom)";
1952 rocketModel[i].model = MODEL_RP16SNI;
1953 strcpy(rocketModel[i].modelString, "RocketPort 16 port w/ custom DB78");
1954 rocketModel[i].numPorts = 16;
1956 case PCI_DEVICE_ID_RP16INTF:
1959 rocketModel[i].model = MODEL_RP16INTF;
1960 strcpy(rocketModel[i].modelString, "RocketPort 16 port w/external I/F");
1961 rocketModel[i].numPorts = 16;
1963 case PCI_DEVICE_ID_URP16INTF:
1966 rocketModel[i].model = MODEL_UPCI_RP16INTF;
1967 strcpy(rocketModel[i].modelString, "RocketPort UPCI 16 port w/external I/F");
1968 rocketModel[i].numPorts = 16;
1970 case PCI_DEVICE_ID_CRP16INTF:
1973 rocketModel[i].model = MODEL_CPCI_RP16INTF;
1974 strcpy(rocketModel[i].modelString, "RocketPort Compact PCI 16 port w/external I/F");
1975 rocketModel[i].numPorts = 16;
1977 case PCI_DEVICE_ID_RP32INTF:
1980 rocketModel[i].model = MODEL_RP32INTF;
1981 strcpy(rocketModel[i].modelString, "RocketPort 32 port w/external I/F");
1982 rocketModel[i].numPorts = 32;
1984 case PCI_DEVICE_ID_URP32INTF:
1987 rocketModel[i].model = MODEL_UPCI_RP32INTF;
1988 strcpy(rocketModel[i].modelString, "RocketPort UPCI 32 port w/external I/F");
1989 rocketModel[i].numPorts = 32;
1991 case PCI_DEVICE_ID_RPP4:
1992 str = "Plus Quadcable";
1995 altChanRingIndicator++;
1997 rocketModel[i].model = MODEL_RPP4;
1998 strcpy(rocketModel[i].modelString, "RocketPort Plus 4 port");
1999 rocketModel[i].numPorts = 4;
2001 case PCI_DEVICE_ID_RPP8:
2002 str = "Plus Octacable";
2005 altChanRingIndicator++;
2007 rocketModel[i].model = MODEL_RPP8;
2008 strcpy(rocketModel[i].modelString, "RocketPort Plus 8 port");
2009 rocketModel[i].numPorts = 8;
2011 case PCI_DEVICE_ID_RP2_232:
2012 str = "Plus 2 (RS-232)";
2015 altChanRingIndicator++;
2017 rocketModel[i].model = MODEL_RP2_232;
2018 strcpy(rocketModel[i].modelString, "RocketPort Plus 2 port RS232");
2019 rocketModel[i].numPorts = 2;
2021 case PCI_DEVICE_ID_RP2_422:
2022 str = "Plus 2 (RS-422)";
2025 altChanRingIndicator++;
2027 rocketModel[i].model = MODEL_RP2_422;
2028 strcpy(rocketModel[i].modelString, "RocketPort Plus 2 port RS422");
2029 rocketModel[i].numPorts = 2;
2031 case PCI_DEVICE_ID_RP6M:
2037 /* If revision is 1, the rocketmodem flash must be loaded.
2038 * If it is 2 it is a "socketed" version. */
2039 if (dev->revision == 1) {
2040 rcktpt_type[i] = ROCKET_TYPE_MODEMII;
2041 rocketModel[i].loadrm2 = 1;
2043 rcktpt_type[i] = ROCKET_TYPE_MODEM;
2046 rocketModel[i].model = MODEL_RP6M;
2047 strcpy(rocketModel[i].modelString, "RocketModem 6 port");
2048 rocketModel[i].numPorts = 6;
2050 case PCI_DEVICE_ID_RP4M:
2054 if (dev->revision == 1) {
2055 rcktpt_type[i] = ROCKET_TYPE_MODEMII;
2056 rocketModel[i].loadrm2 = 1;
2058 rcktpt_type[i] = ROCKET_TYPE_MODEM;
2061 rocketModel[i].model = MODEL_RP4M;
2062 strcpy(rocketModel[i].modelString, "RocketModem 4 port");
2063 rocketModel[i].numPorts = 4;
2066 str = "(unknown/unsupported)";
2072 * Check for UPCI boards.
2075 switch (dev->device) {
2076 case PCI_DEVICE_ID_URP32INTF:
2077 case PCI_DEVICE_ID_URP8INTF:
2078 case PCI_DEVICE_ID_URP16INTF:
2079 case PCI_DEVICE_ID_CRP16INTF:
2080 case PCI_DEVICE_ID_URP8OCTA:
2081 rcktpt_io_addr[i] = pci_resource_start(dev, 2);
2082 ConfigIO = pci_resource_start(dev, 1);
2083 if (dev->device == PCI_DEVICE_ID_URP8OCTA) {
2084 UPCIRingInd = rcktpt_io_addr[i] + _PCI_9030_RING_IND;
2087 * Check for octa or quad cable.
2090 (sInW(ConfigIO + _PCI_9030_GPIO_CTRL) &
2091 PCI_GPIO_CTRL_8PORT)) {
2094 rocketModel[i].numPorts = 4;
2098 case PCI_DEVICE_ID_UPCI_RM3_8PORT:
2101 rocketModel[i].model = MODEL_UPCI_RM3_8PORT;
2102 strcpy(rocketModel[i].modelString, "RocketModem III 8 port");
2103 rocketModel[i].numPorts = 8;
2104 rcktpt_io_addr[i] = pci_resource_start(dev, 2);
2105 UPCIRingInd = rcktpt_io_addr[i] + _PCI_9030_RING_IND;
2106 ConfigIO = pci_resource_start(dev, 1);
2107 rcktpt_type[i] = ROCKET_TYPE_MODEMIII;
2109 case PCI_DEVICE_ID_UPCI_RM3_4PORT:
2112 rocketModel[i].model = MODEL_UPCI_RM3_4PORT;
2113 strcpy(rocketModel[i].modelString, "RocketModem III 4 port");
2114 rocketModel[i].numPorts = 4;
2115 rcktpt_io_addr[i] = pci_resource_start(dev, 2);
2116 UPCIRingInd = rcktpt_io_addr[i] + _PCI_9030_RING_IND;
2117 ConfigIO = pci_resource_start(dev, 1);
2118 rcktpt_type[i] = ROCKET_TYPE_MODEMIII;
2124 switch (rcktpt_type[i]) {
2125 case ROCKET_TYPE_MODEM:
2126 board_type = "RocketModem";
2128 case ROCKET_TYPE_MODEMII:
2129 board_type = "RocketModem II";
2131 case ROCKET_TYPE_MODEMIII:
2132 board_type = "RocketModem III";
2135 board_type = "RocketPort";
2140 sClockPrescale = 0x12; /* mod 2 (divide by 3) */
2141 rp_baud_base[i] = 921600;
2144 * If support_low_speed is set, use the slow clock
2145 * prescale, which supports 50 bps
2147 if (support_low_speed) {
2148 /* mod 9 (divide by 10) prescale */
2149 sClockPrescale = 0x19;
2150 rp_baud_base[i] = 230400;
2152 /* mod 4 (devide by 5) prescale */
2153 sClockPrescale = 0x14;
2154 rp_baud_base[i] = 460800;
2158 for (aiop = 0; aiop < max_num_aiops; aiop++)
2159 aiopio[aiop] = rcktpt_io_addr[i] + (aiop * 0x40);
2160 ctlp = sCtlNumToCtlPtr(i);
2161 num_aiops = sPCIInitController(ctlp, i, aiopio, max_num_aiops, ConfigIO, 0, FREQ_DIS, 0, altChanRingIndicator, UPCIRingInd);
2162 for (aiop = 0; aiop < max_num_aiops; aiop++)
2163 ctlp->AiopNumChan[aiop] = ports_per_aiop;
2165 dev_info(&dev->dev, "comtrol PCI controller #%d found at "
2166 "address %04lx, %d AIOP(s) (%s), creating ttyR%d - %ld\n",
2167 i, rcktpt_io_addr[i], num_aiops, rocketModel[i].modelString,
2168 rocketModel[i].startingPortNumber,
2169 rocketModel[i].startingPortNumber + rocketModel[i].numPorts-1);
2171 if (num_aiops <= 0) {
2172 rcktpt_io_addr[i] = 0;
2177 /* Reset the AIOPIC, init the serial ports */
2178 for (aiop = 0; aiop < num_aiops; aiop++) {
2179 sResetAiopByNum(ctlp, aiop);
2180 num_chan = ports_per_aiop;
2181 for (chan = 0; chan < num_chan; chan++)
2182 init_r_port(i, aiop, chan, dev);
2185 /* Rocket modems must be reset */
2186 if ((rcktpt_type[i] == ROCKET_TYPE_MODEM) ||
2187 (rcktpt_type[i] == ROCKET_TYPE_MODEMII) ||
2188 (rcktpt_type[i] == ROCKET_TYPE_MODEMIII)) {
2189 num_chan = ports_per_aiop;
2190 for (chan = 0; chan < num_chan; chan++)
2191 sPCIModemReset(ctlp, chan, 1);
2193 for (chan = 0; chan < num_chan; chan++)
2194 sPCIModemReset(ctlp, chan, 0);
2196 rmSpeakerReset(ctlp, rocketModel[i].model);
2202 * Probes for PCI cards, inits them if found
2203 * Input: board_found = number of ISA boards already found, or the
2204 * starting board number
2205 * Returns: Number of PCI boards found
2207 static int __init init_PCI(int boards_found)
2209 struct pci_dev *dev = NULL;
2212 /* Work through the PCI device list, pulling out ours */
2213 while ((dev = pci_get_device(PCI_VENDOR_ID_RP, PCI_ANY_ID, dev))) {
2214 if (register_PCI(count + boards_found, dev))
2220 #endif /* CONFIG_PCI */
2223 * Probes for ISA cards
2224 * Input: i = the board number to look for
2225 * Returns: 1 if board found, 0 else
2227 static int __init init_ISA(int i)
2229 int num_aiops, num_chan = 0, total_num_chan = 0;
2231 unsigned int aiopio[MAX_AIOPS_PER_BOARD];
2235 /* If io_addr is zero, no board configured */
2236 if (rcktpt_io_addr[i] == 0)
2239 /* Reserve the IO region */
2240 if (!request_region(rcktpt_io_addr[i], 64, "Comtrol RocketPort")) {
2241 printk(KERN_ERR "Unable to reserve IO region for configured "
2242 "ISA RocketPort at address 0x%lx, board not "
2243 "installed...\n", rcktpt_io_addr[i]);
2244 rcktpt_io_addr[i] = 0;
2248 ctlp = sCtlNumToCtlPtr(i);
2250 ctlp->boardType = rcktpt_type[i];
2252 switch (rcktpt_type[i]) {
2253 case ROCKET_TYPE_PC104:
2254 type_string = "(PC104)";
2256 case ROCKET_TYPE_MODEM:
2257 type_string = "(RocketModem)";
2259 case ROCKET_TYPE_MODEMII:
2260 type_string = "(RocketModem II)";
2268 * If support_low_speed is set, use the slow clock prescale,
2269 * which supports 50 bps
2271 if (support_low_speed) {
2272 sClockPrescale = 0x19; /* mod 9 (divide by 10) prescale */
2273 rp_baud_base[i] = 230400;
2275 sClockPrescale = 0x14; /* mod 4 (devide by 5) prescale */
2276 rp_baud_base[i] = 460800;
2279 for (aiop = 0; aiop < MAX_AIOPS_PER_BOARD; aiop++)
2280 aiopio[aiop] = rcktpt_io_addr[i] + (aiop * 0x400);
2282 num_aiops = sInitController(ctlp, i, controller + (i * 0x400), aiopio, MAX_AIOPS_PER_BOARD, 0, FREQ_DIS, 0);
2284 if (ctlp->boardType == ROCKET_TYPE_PC104) {
2285 sEnAiop(ctlp, 2); /* only one AIOPIC, but these */
2286 sEnAiop(ctlp, 3); /* CSels used for other stuff */
2289 /* If something went wrong initing the AIOP's release the ISA IO memory */
2290 if (num_aiops <= 0) {
2291 release_region(rcktpt_io_addr[i], 64);
2292 rcktpt_io_addr[i] = 0;
2296 rocketModel[i].startingPortNumber = nextLineNumber;
2298 for (aiop = 0; aiop < num_aiops; aiop++) {
2299 sResetAiopByNum(ctlp, aiop);
2300 sEnAiop(ctlp, aiop);
2301 num_chan = sGetAiopNumChan(ctlp, aiop);
2302 total_num_chan += num_chan;
2303 for (chan = 0; chan < num_chan; chan++)
2304 init_r_port(i, aiop, chan, NULL);
2307 if ((rcktpt_type[i] == ROCKET_TYPE_MODEM) || (rcktpt_type[i] == ROCKET_TYPE_MODEMII)) {
2308 num_chan = sGetAiopNumChan(ctlp, 0);
2309 total_num_chan = num_chan;
2310 for (chan = 0; chan < num_chan; chan++)
2311 sModemReset(ctlp, chan, 1);
2313 for (chan = 0; chan < num_chan; chan++)
2314 sModemReset(ctlp, chan, 0);
2316 strcpy(rocketModel[i].modelString, "RocketModem ISA");
2318 strcpy(rocketModel[i].modelString, "RocketPort ISA");
2320 rocketModel[i].numPorts = total_num_chan;
2321 rocketModel[i].model = MODEL_ISA;
2323 printk(KERN_INFO "RocketPort ISA card #%d found at 0x%lx - %d AIOPs %s\n",
2324 i, rcktpt_io_addr[i], num_aiops, type_string);
2326 printk(KERN_INFO "Installing %s, creating /dev/ttyR%d - %ld\n",
2327 rocketModel[i].modelString,
2328 rocketModel[i].startingPortNumber,
2329 rocketModel[i].startingPortNumber +
2330 rocketModel[i].numPorts - 1);
2335 static const struct tty_operations rocket_ops = {
2339 .put_char = rp_put_char,
2340 .write_room = rp_write_room,
2341 .chars_in_buffer = rp_chars_in_buffer,
2342 .flush_buffer = rp_flush_buffer,
2344 .throttle = rp_throttle,
2345 .unthrottle = rp_unthrottle,
2346 .set_termios = rp_set_termios,
2349 .hangup = rp_hangup,
2350 .break_ctl = rp_break,
2351 .send_xchar = rp_send_xchar,
2352 .wait_until_sent = rp_wait_until_sent,
2353 .tiocmget = rp_tiocmget,
2354 .tiocmset = rp_tiocmset,
2358 * The module "startup" routine; it's run when the module is loaded.
2360 static int __init rp_init(void)
2362 int ret = -ENOMEM, pci_boards_found, isa_boards_found, i;
2364 printk(KERN_INFO "RocketPort device driver module, version %s, %s\n",
2365 ROCKET_VERSION, ROCKET_DATE);
2367 rocket_driver = alloc_tty_driver(MAX_RP_PORTS);
2372 * If board 1 is non-zero, there is at least one ISA configured. If controller is
2373 * zero, use the default controller IO address of board1 + 0x40.
2376 if (controller == 0)
2377 controller = board1 + 0x40;
2379 controller = 0; /* Used as a flag, meaning no ISA boards */
2382 /* If an ISA card is configured, reserve the 4 byte IO space for the Mudbac controller */
2383 if (controller && (!request_region(controller, 4, "Comtrol RocketPort"))) {
2384 printk(KERN_ERR "Unable to reserve IO region for first "
2385 "configured ISA RocketPort controller 0x%lx. "
2386 "Driver exiting\n", controller);
2391 /* Store ISA variable retrieved from command line or .conf file. */
2392 rcktpt_io_addr[0] = board1;
2393 rcktpt_io_addr[1] = board2;
2394 rcktpt_io_addr[2] = board3;
2395 rcktpt_io_addr[3] = board4;
2397 rcktpt_type[0] = modem1 ? ROCKET_TYPE_MODEM : ROCKET_TYPE_NORMAL;
2398 rcktpt_type[0] = pc104_1[0] ? ROCKET_TYPE_PC104 : rcktpt_type[0];
2399 rcktpt_type[1] = modem2 ? ROCKET_TYPE_MODEM : ROCKET_TYPE_NORMAL;
2400 rcktpt_type[1] = pc104_2[0] ? ROCKET_TYPE_PC104 : rcktpt_type[1];
2401 rcktpt_type[2] = modem3 ? ROCKET_TYPE_MODEM : ROCKET_TYPE_NORMAL;
2402 rcktpt_type[2] = pc104_3[0] ? ROCKET_TYPE_PC104 : rcktpt_type[2];
2403 rcktpt_type[3] = modem4 ? ROCKET_TYPE_MODEM : ROCKET_TYPE_NORMAL;
2404 rcktpt_type[3] = pc104_4[0] ? ROCKET_TYPE_PC104 : rcktpt_type[3];
2407 * Set up the tty driver structure and then register this
2408 * driver with the tty layer.
2411 rocket_driver->owner = THIS_MODULE;
2412 rocket_driver->flags = TTY_DRIVER_DYNAMIC_DEV;
2413 rocket_driver->name = "ttyR";
2414 rocket_driver->driver_name = "Comtrol RocketPort";
2415 rocket_driver->major = TTY_ROCKET_MAJOR;
2416 rocket_driver->minor_start = 0;
2417 rocket_driver->type = TTY_DRIVER_TYPE_SERIAL;
2418 rocket_driver->subtype = SERIAL_TYPE_NORMAL;
2419 rocket_driver->init_termios = tty_std_termios;
2420 rocket_driver->init_termios.c_cflag =
2421 B9600 | CS8 | CREAD | HUPCL | CLOCAL;
2422 rocket_driver->init_termios.c_ispeed = 9600;
2423 rocket_driver->init_termios.c_ospeed = 9600;
2424 #ifdef ROCKET_SOFT_FLOW
2425 rocket_driver->flags |= TTY_DRIVER_REAL_RAW;
2427 tty_set_operations(rocket_driver, &rocket_ops);
2429 ret = tty_register_driver(rocket_driver);
2431 printk(KERN_ERR "Couldn't install tty RocketPort driver\n");
2435 #ifdef ROCKET_DEBUG_OPEN
2436 printk(KERN_INFO "RocketPort driver is major %d\n", rocket_driver.major);
2440 * OK, let's probe each of the controllers looking for boards. Any boards found
2441 * will be initialized here.
2443 isa_boards_found = 0;
2444 pci_boards_found = 0;
2446 for (i = 0; i < NUM_BOARDS; i++) {
2452 if (isa_boards_found < NUM_BOARDS)
2453 pci_boards_found = init_PCI(isa_boards_found);
2456 max_board = pci_boards_found + isa_boards_found;
2458 if (max_board == 0) {
2459 printk(KERN_ERR "No rocketport ports found; unloading driver\n");
2466 tty_unregister_driver(rocket_driver);
2468 put_tty_driver(rocket_driver);
2474 static void rp_cleanup_module(void)
2479 del_timer_sync(&rocket_timer);
2481 retval = tty_unregister_driver(rocket_driver);
2483 printk(KERN_ERR "Error %d while trying to unregister "
2484 "rocketport driver\n", -retval);
2486 for (i = 0; i < MAX_RP_PORTS; i++)
2488 tty_unregister_device(rocket_driver, i);
2492 put_tty_driver(rocket_driver);
2494 for (i = 0; i < NUM_BOARDS; i++) {
2495 if (rcktpt_io_addr[i] <= 0 || is_PCI[i])
2497 release_region(rcktpt_io_addr[i], 64);
2500 release_region(controller, 4);
2503 /***************************************************************************
2504 Function: sInitController
2505 Purpose: Initialization of controller global registers and controller
2507 Call: sInitController(CtlP,CtlNum,MudbacIO,AiopIOList,AiopIOListSize,
2508 IRQNum,Frequency,PeriodicOnly)
2509 CONTROLLER_T *CtlP; Ptr to controller structure
2510 int CtlNum; Controller number
2511 ByteIO_t MudbacIO; Mudbac base I/O address.
2512 ByteIO_t *AiopIOList; List of I/O addresses for each AIOP.
2513 This list must be in the order the AIOPs will be found on the
2514 controller. Once an AIOP in the list is not found, it is
2515 assumed that there are no more AIOPs on the controller.
2516 int AiopIOListSize; Number of addresses in AiopIOList
2517 int IRQNum; Interrupt Request number. Can be any of the following:
2518 0: Disable global interrupts
2527 Byte_t Frequency: A flag identifying the frequency
2528 of the periodic interrupt, can be any one of the following:
2529 FREQ_DIS - periodic interrupt disabled
2530 FREQ_137HZ - 137 Hertz
2531 FREQ_69HZ - 69 Hertz
2532 FREQ_34HZ - 34 Hertz
2533 FREQ_17HZ - 17 Hertz
2536 If IRQNum is set to 0 the Frequency parameter is
2537 overidden, it is forced to a value of FREQ_DIS.
2538 int PeriodicOnly: 1 if all interrupts except the periodic
2539 interrupt are to be blocked.
2540 0 is both the periodic interrupt and
2541 other channel interrupts are allowed.
2542 If IRQNum is set to 0 the PeriodicOnly parameter is
2543 overidden, it is forced to a value of 0.
2544 Return: int: Number of AIOPs on the controller, or CTLID_NULL if controller
2545 initialization failed.
2548 If periodic interrupts are to be disabled but AIOP interrupts
2549 are allowed, set Frequency to FREQ_DIS and PeriodicOnly to 0.
2551 If interrupts are to be completely disabled set IRQNum to 0.
2553 Setting Frequency to FREQ_DIS and PeriodicOnly to 1 is an
2554 invalid combination.
2556 This function performs initialization of global interrupt modes,
2557 but it does not actually enable global interrupts. To enable
2558 and disable global interrupts use functions sEnGlobalInt() and
2559 sDisGlobalInt(). Enabling of global interrupts is normally not
2560 done until all other initializations are complete.
2562 Even if interrupts are globally enabled, they must also be
2563 individually enabled for each channel that is to generate
2566 Warnings: No range checking on any of the parameters is done.
2568 No context switches are allowed while executing this function.
2570 After this function all AIOPs on the controller are disabled,
2571 they can be enabled with sEnAiop().
2573 static int sInitController(CONTROLLER_T * CtlP, int CtlNum, ByteIO_t MudbacIO,
2574 ByteIO_t * AiopIOList, int AiopIOListSize,
2575 int IRQNum, Byte_t Frequency, int PeriodicOnly)
2581 CtlP->AiopIntrBits = aiop_intr_bits;
2582 CtlP->AltChanRingIndicator = 0;
2583 CtlP->CtlNum = CtlNum;
2584 CtlP->CtlID = CTLID_0001; /* controller release 1 */
2585 CtlP->BusType = isISA;
2586 CtlP->MBaseIO = MudbacIO;
2587 CtlP->MReg1IO = MudbacIO + 1;
2588 CtlP->MReg2IO = MudbacIO + 2;
2589 CtlP->MReg3IO = MudbacIO + 3;
2591 CtlP->MReg2 = 0; /* interrupt disable */
2592 CtlP->MReg3 = 0; /* no periodic interrupts */
2594 if (sIRQMap[IRQNum] == 0) { /* interrupts globally disabled */
2595 CtlP->MReg2 = 0; /* interrupt disable */
2596 CtlP->MReg3 = 0; /* no periodic interrupts */
2598 CtlP->MReg2 = sIRQMap[IRQNum]; /* set IRQ number */
2599 CtlP->MReg3 = Frequency; /* set frequency */
2600 if (PeriodicOnly) { /* periodic interrupt only */
2601 CtlP->MReg3 |= PERIODIC_ONLY;
2605 sOutB(CtlP->MReg2IO, CtlP->MReg2);
2606 sOutB(CtlP->MReg3IO, CtlP->MReg3);
2607 sControllerEOI(CtlP); /* clear EOI if warm init */
2610 for (i = done = 0; i < AiopIOListSize; i++) {
2612 CtlP->AiopIO[i] = (WordIO_t) io;
2613 CtlP->AiopIntChanIO[i] = io + _INT_CHAN;
2614 sOutB(CtlP->MReg2IO, CtlP->MReg2 | (i & 0x03)); /* AIOP index */
2615 sOutB(MudbacIO, (Byte_t) (io >> 6)); /* set up AIOP I/O in MUDBAC */
2618 sEnAiop(CtlP, i); /* enable the AIOP */
2619 CtlP->AiopID[i] = sReadAiopID(io); /* read AIOP ID */
2620 if (CtlP->AiopID[i] == AIOPID_NULL) /* if AIOP does not exist */
2621 done = 1; /* done looking for AIOPs */
2623 CtlP->AiopNumChan[i] = sReadAiopNumChan((WordIO_t) io); /* num channels in AIOP */
2624 sOutW((WordIO_t) io + _INDX_ADDR, _CLK_PRE); /* clock prescaler */
2625 sOutB(io + _INDX_DATA, sClockPrescale);
2626 CtlP->NumAiop++; /* bump count of AIOPs */
2628 sDisAiop(CtlP, i); /* disable AIOP */
2631 if (CtlP->NumAiop == 0)
2634 return (CtlP->NumAiop);
2637 /***************************************************************************
2638 Function: sPCIInitController
2639 Purpose: Initialization of controller global registers and controller
2641 Call: sPCIInitController(CtlP,CtlNum,AiopIOList,AiopIOListSize,
2642 IRQNum,Frequency,PeriodicOnly)
2643 CONTROLLER_T *CtlP; Ptr to controller structure
2644 int CtlNum; Controller number
2645 ByteIO_t *AiopIOList; List of I/O addresses for each AIOP.
2646 This list must be in the order the AIOPs will be found on the
2647 controller. Once an AIOP in the list is not found, it is
2648 assumed that there are no more AIOPs on the controller.
2649 int AiopIOListSize; Number of addresses in AiopIOList
2650 int IRQNum; Interrupt Request number. Can be any of the following:
2651 0: Disable global interrupts
2660 Byte_t Frequency: A flag identifying the frequency
2661 of the periodic interrupt, can be any one of the following:
2662 FREQ_DIS - periodic interrupt disabled
2663 FREQ_137HZ - 137 Hertz
2664 FREQ_69HZ - 69 Hertz
2665 FREQ_34HZ - 34 Hertz
2666 FREQ_17HZ - 17 Hertz
2669 If IRQNum is set to 0 the Frequency parameter is
2670 overidden, it is forced to a value of FREQ_DIS.
2671 int PeriodicOnly: 1 if all interrupts except the periodic
2672 interrupt are to be blocked.
2673 0 is both the periodic interrupt and
2674 other channel interrupts are allowed.
2675 If IRQNum is set to 0 the PeriodicOnly parameter is
2676 overidden, it is forced to a value of 0.
2677 Return: int: Number of AIOPs on the controller, or CTLID_NULL if controller
2678 initialization failed.
2681 If periodic interrupts are to be disabled but AIOP interrupts
2682 are allowed, set Frequency to FREQ_DIS and PeriodicOnly to 0.
2684 If interrupts are to be completely disabled set IRQNum to 0.
2686 Setting Frequency to FREQ_DIS and PeriodicOnly to 1 is an
2687 invalid combination.
2689 This function performs initialization of global interrupt modes,
2690 but it does not actually enable global interrupts. To enable
2691 and disable global interrupts use functions sEnGlobalInt() and
2692 sDisGlobalInt(). Enabling of global interrupts is normally not
2693 done until all other initializations are complete.
2695 Even if interrupts are globally enabled, they must also be
2696 individually enabled for each channel that is to generate
2699 Warnings: No range checking on any of the parameters is done.
2701 No context switches are allowed while executing this function.
2703 After this function all AIOPs on the controller are disabled,
2704 they can be enabled with sEnAiop().
2706 static int sPCIInitController(CONTROLLER_T * CtlP, int CtlNum,
2707 ByteIO_t * AiopIOList, int AiopIOListSize,
2708 WordIO_t ConfigIO, int IRQNum, Byte_t Frequency,
2709 int PeriodicOnly, int altChanRingIndicator,
2715 CtlP->AltChanRingIndicator = altChanRingIndicator;
2716 CtlP->UPCIRingInd = UPCIRingInd;
2717 CtlP->CtlNum = CtlNum;
2718 CtlP->CtlID = CTLID_0001; /* controller release 1 */
2719 CtlP->BusType = isPCI; /* controller release 1 */
2723 CtlP->PCIIO = ConfigIO + _PCI_9030_INT_CTRL;
2724 CtlP->PCIIO2 = ConfigIO + _PCI_9030_GPIO_CTRL;
2725 CtlP->AiopIntrBits = upci_aiop_intr_bits;
2729 (WordIO_t) ((ByteIO_t) AiopIOList[0] + _PCI_INT_FUNC);
2730 CtlP->AiopIntrBits = aiop_intr_bits;
2733 sPCIControllerEOI(CtlP); /* clear EOI if warm init */
2736 for (i = 0; i < AiopIOListSize; i++) {
2738 CtlP->AiopIO[i] = (WordIO_t) io;
2739 CtlP->AiopIntChanIO[i] = io + _INT_CHAN;
2741 CtlP->AiopID[i] = sReadAiopID(io); /* read AIOP ID */
2742 if (CtlP->AiopID[i] == AIOPID_NULL) /* if AIOP does not exist */
2743 break; /* done looking for AIOPs */
2745 CtlP->AiopNumChan[i] = sReadAiopNumChan((WordIO_t) io); /* num channels in AIOP */
2746 sOutW((WordIO_t) io + _INDX_ADDR, _CLK_PRE); /* clock prescaler */
2747 sOutB(io + _INDX_DATA, sClockPrescale);
2748 CtlP->NumAiop++; /* bump count of AIOPs */
2751 if (CtlP->NumAiop == 0)
2754 return (CtlP->NumAiop);
2757 /***************************************************************************
2758 Function: sReadAiopID
2759 Purpose: Read the AIOP idenfication number directly from an AIOP.
2760 Call: sReadAiopID(io)
2761 ByteIO_t io: AIOP base I/O address
2762 Return: int: Flag AIOPID_XXXX if a valid AIOP is found, where X
2763 is replace by an identifying number.
2764 Flag AIOPID_NULL if no valid AIOP is found
2765 Warnings: No context switches are allowed while executing this function.
2768 static int sReadAiopID(ByteIO_t io)
2770 Byte_t AiopID; /* ID byte from AIOP */
2772 sOutB(io + _CMD_REG, RESET_ALL); /* reset AIOP */
2773 sOutB(io + _CMD_REG, 0x0);
2774 AiopID = sInW(io + _CHN_STAT0) & 0x07;
2777 else /* AIOP does not exist */
2781 /***************************************************************************
2782 Function: sReadAiopNumChan
2783 Purpose: Read the number of channels available in an AIOP directly from
2785 Call: sReadAiopNumChan(io)
2786 WordIO_t io: AIOP base I/O address
2787 Return: int: The number of channels available
2788 Comments: The number of channels is determined by write/reads from identical
2789 offsets within the SRAM address spaces for channels 0 and 4.
2790 If the channel 4 space is mirrored to channel 0 it is a 4 channel
2791 AIOP, otherwise it is an 8 channel.
2792 Warnings: No context switches are allowed while executing this function.
2794 static int sReadAiopNumChan(WordIO_t io)
2797 static Byte_t R[4] = { 0x00, 0x00, 0x34, 0x12 };
2799 /* write to chan 0 SRAM */
2800 sOutDW((DWordIO_t) io + _INDX_ADDR, *((DWord_t *) & R[0]));
2801 sOutW(io + _INDX_ADDR, 0); /* read from SRAM, chan 0 */
2802 x = sInW(io + _INDX_DATA);
2803 sOutW(io + _INDX_ADDR, 0x4000); /* read from SRAM, chan 4 */
2804 if (x != sInW(io + _INDX_DATA)) /* if different must be 8 chan */
2810 /***************************************************************************
2812 Purpose: Initialization of a channel and channel structure
2813 Call: sInitChan(CtlP,ChP,AiopNum,ChanNum)
2814 CONTROLLER_T *CtlP; Ptr to controller structure
2815 CHANNEL_T *ChP; Ptr to channel structure
2816 int AiopNum; AIOP number within controller
2817 int ChanNum; Channel number within AIOP
2818 Return: int: 1 if initialization succeeded, 0 if it fails because channel
2819 number exceeds number of channels available in AIOP.
2820 Comments: This function must be called before a channel can be used.
2821 Warnings: No range checking on any of the parameters is done.
2823 No context switches are allowed while executing this function.
2825 static int sInitChan(CONTROLLER_T * CtlP, CHANNEL_T * ChP, int AiopNum,
2836 if (ChanNum >= CtlP->AiopNumChan[AiopNum])
2837 return 0; /* exceeds num chans in AIOP */
2839 /* Channel, AIOP, and controller identifiers */
2841 ChP->ChanID = CtlP->AiopID[AiopNum];
2842 ChP->AiopNum = AiopNum;
2843 ChP->ChanNum = ChanNum;
2845 /* Global direct addresses */
2846 AiopIO = CtlP->AiopIO[AiopNum];
2847 ChP->Cmd = (ByteIO_t) AiopIO + _CMD_REG;
2848 ChP->IntChan = (ByteIO_t) AiopIO + _INT_CHAN;
2849 ChP->IntMask = (ByteIO_t) AiopIO + _INT_MASK;
2850 ChP->IndexAddr = (DWordIO_t) AiopIO + _INDX_ADDR;
2851 ChP->IndexData = AiopIO + _INDX_DATA;
2853 /* Channel direct addresses */
2854 ChIOOff = AiopIO + ChP->ChanNum * 2;
2855 ChP->TxRxData = ChIOOff + _TD0;
2856 ChP->ChanStat = ChIOOff + _CHN_STAT0;
2857 ChP->TxRxCount = ChIOOff + _FIFO_CNT0;
2858 ChP->IntID = (ByteIO_t) AiopIO + ChP->ChanNum + _INT_ID0;
2860 /* Initialize the channel from the RData array */
2861 for (i = 0; i < RDATASIZE; i += 4) {
2863 R[1] = RData[i + 1] + 0x10 * ChanNum;
2864 R[2] = RData[i + 2];
2865 R[3] = RData[i + 3];
2866 sOutDW(ChP->IndexAddr, *((DWord_t *) & R[0]));
2870 for (i = 0; i < RREGDATASIZE; i += 4) {
2871 ChR[i] = RRegData[i];
2872 ChR[i + 1] = RRegData[i + 1] + 0x10 * ChanNum;
2873 ChR[i + 2] = RRegData[i + 2];
2874 ChR[i + 3] = RRegData[i + 3];
2877 /* Indexed registers */
2878 ChOff = (Word_t) ChanNum *0x1000;
2880 if (sClockPrescale == 0x14)
2885 ChP->BaudDiv[0] = (Byte_t) (ChOff + _BAUD);
2886 ChP->BaudDiv[1] = (Byte_t) ((ChOff + _BAUD) >> 8);
2887 ChP->BaudDiv[2] = (Byte_t) brd9600;
2888 ChP->BaudDiv[3] = (Byte_t) (brd9600 >> 8);
2889 sOutDW(ChP->IndexAddr, *(DWord_t *) & ChP->BaudDiv[0]);
2891 ChP->TxControl[0] = (Byte_t) (ChOff + _TX_CTRL);
2892 ChP->TxControl[1] = (Byte_t) ((ChOff + _TX_CTRL) >> 8);
2893 ChP->TxControl[2] = 0;
2894 ChP->TxControl[3] = 0;
2895 sOutDW(ChP->IndexAddr, *(DWord_t *) & ChP->TxControl[0]);
2897 ChP->RxControl[0] = (Byte_t) (ChOff + _RX_CTRL);
2898 ChP->RxControl[1] = (Byte_t) ((ChOff + _RX_CTRL) >> 8);
2899 ChP->RxControl[2] = 0;
2900 ChP->RxControl[3] = 0;
2901 sOutDW(ChP->IndexAddr, *(DWord_t *) & ChP->RxControl[0]);
2903 ChP->TxEnables[0] = (Byte_t) (ChOff + _TX_ENBLS);
2904 ChP->TxEnables[1] = (Byte_t) ((ChOff + _TX_ENBLS) >> 8);
2905 ChP->TxEnables[2] = 0;
2906 ChP->TxEnables[3] = 0;
2907 sOutDW(ChP->IndexAddr, *(DWord_t *) & ChP->TxEnables[0]);
2909 ChP->TxCompare[0] = (Byte_t) (ChOff + _TXCMP1);
2910 ChP->TxCompare[1] = (Byte_t) ((ChOff + _TXCMP1) >> 8);
2911 ChP->TxCompare[2] = 0;
2912 ChP->TxCompare[3] = 0;
2913 sOutDW(ChP->IndexAddr, *(DWord_t *) & ChP->TxCompare[0]);
2915 ChP->TxReplace1[0] = (Byte_t) (ChOff + _TXREP1B1);
2916 ChP->TxReplace1[1] = (Byte_t) ((ChOff + _TXREP1B1) >> 8);
2917 ChP->TxReplace1[2] = 0;
2918 ChP->TxReplace1[3] = 0;
2919 sOutDW(ChP->IndexAddr, *(DWord_t *) & ChP->TxReplace1[0]);
2921 ChP->TxReplace2[0] = (Byte_t) (ChOff + _TXREP2);
2922 ChP->TxReplace2[1] = (Byte_t) ((ChOff + _TXREP2) >> 8);
2923 ChP->TxReplace2[2] = 0;
2924 ChP->TxReplace2[3] = 0;
2925 sOutDW(ChP->IndexAddr, *(DWord_t *) & ChP->TxReplace2[0]);
2927 ChP->TxFIFOPtrs = ChOff + _TXF_OUTP;
2928 ChP->TxFIFO = ChOff + _TX_FIFO;
2930 sOutB(ChP->Cmd, (Byte_t) ChanNum | RESTXFCNT); /* apply reset Tx FIFO count */
2931 sOutB(ChP->Cmd, (Byte_t) ChanNum); /* remove reset Tx FIFO count */
2932 sOutW((WordIO_t) ChP->IndexAddr, ChP->TxFIFOPtrs); /* clear Tx in/out ptrs */
2933 sOutW(ChP->IndexData, 0);
2934 ChP->RxFIFOPtrs = ChOff + _RXF_OUTP;
2935 ChP->RxFIFO = ChOff + _RX_FIFO;
2937 sOutB(ChP->Cmd, (Byte_t) ChanNum | RESRXFCNT); /* apply reset Rx FIFO count */
2938 sOutB(ChP->Cmd, (Byte_t) ChanNum); /* remove reset Rx FIFO count */
2939 sOutW((WordIO_t) ChP->IndexAddr, ChP->RxFIFOPtrs); /* clear Rx out ptr */
2940 sOutW(ChP->IndexData, 0);
2941 sOutW((WordIO_t) ChP->IndexAddr, ChP->RxFIFOPtrs + 2); /* clear Rx in ptr */
2942 sOutW(ChP->IndexData, 0);
2943 ChP->TxPrioCnt = ChOff + _TXP_CNT;
2944 sOutW((WordIO_t) ChP->IndexAddr, ChP->TxPrioCnt);
2945 sOutB(ChP->IndexData, 0);
2946 ChP->TxPrioPtr = ChOff + _TXP_PNTR;
2947 sOutW((WordIO_t) ChP->IndexAddr, ChP->TxPrioPtr);
2948 sOutB(ChP->IndexData, 0);
2949 ChP->TxPrioBuf = ChOff + _TXP_BUF;
2950 sEnRxProcessor(ChP); /* start the Rx processor */
2955 /***************************************************************************
2956 Function: sStopRxProcessor
2957 Purpose: Stop the receive processor from processing a channel.
2958 Call: sStopRxProcessor(ChP)
2959 CHANNEL_T *ChP; Ptr to channel structure
2961 Comments: The receive processor can be started again with sStartRxProcessor().
2962 This function causes the receive processor to skip over the
2963 stopped channel. It does not stop it from processing other channels.
2965 Warnings: No context switches are allowed while executing this function.
2967 Do not leave the receive processor stopped for more than one
2970 After calling this function a delay of 4 uS is required to ensure
2971 that the receive processor is no longer processing this channel.
2973 static void sStopRxProcessor(CHANNEL_T * ChP)
2981 sOutDW(ChP->IndexAddr, *(DWord_t *) & R[0]);
2984 /***************************************************************************
2985 Function: sFlushRxFIFO
2986 Purpose: Flush the Rx FIFO
2987 Call: sFlushRxFIFO(ChP)
2988 CHANNEL_T *ChP; Ptr to channel structure
2990 Comments: To prevent data from being enqueued or dequeued in the Tx FIFO
2991 while it is being flushed the receive processor is stopped
2992 and the transmitter is disabled. After these operations a
2993 4 uS delay is done before clearing the pointers to allow
2994 the receive processor to stop. These items are handled inside
2996 Warnings: No context switches are allowed while executing this function.
2998 static void sFlushRxFIFO(CHANNEL_T * ChP)
3001 Byte_t Ch; /* channel number within AIOP */
3002 int RxFIFOEnabled; /* 1 if Rx FIFO enabled */
3004 if (sGetRxCnt(ChP) == 0) /* Rx FIFO empty */
3005 return; /* don't need to flush */
3008 if (ChP->R[0x32] == 0x08) { /* Rx FIFO is enabled */
3010 sDisRxFIFO(ChP); /* disable it */
3011 for (i = 0; i < 2000 / 200; i++) /* delay 2 uS to allow proc to disable FIFO */
3012 sInB(ChP->IntChan); /* depends on bus i/o timing */
3014 sGetChanStatus(ChP); /* clear any pending Rx errors in chan stat */
3015 Ch = (Byte_t) sGetChanNum(ChP);
3016 sOutB(ChP->Cmd, Ch | RESRXFCNT); /* apply reset Rx FIFO count */
3017 sOutB(ChP->Cmd, Ch); /* remove reset Rx FIFO count */
3018 sOutW((WordIO_t) ChP->IndexAddr, ChP->RxFIFOPtrs); /* clear Rx out ptr */
3019 sOutW(ChP->IndexData, 0);
3020 sOutW((WordIO_t) ChP->IndexAddr, ChP->RxFIFOPtrs + 2); /* clear Rx in ptr */
3021 sOutW(ChP->IndexData, 0);
3023 sEnRxFIFO(ChP); /* enable Rx FIFO */
3026 /***************************************************************************
3027 Function: sFlushTxFIFO
3028 Purpose: Flush the Tx FIFO
3029 Call: sFlushTxFIFO(ChP)
3030 CHANNEL_T *ChP; Ptr to channel structure
3032 Comments: To prevent data from being enqueued or dequeued in the Tx FIFO
3033 while it is being flushed the receive processor is stopped
3034 and the transmitter is disabled. After these operations a
3035 4 uS delay is done before clearing the pointers to allow
3036 the receive processor to stop. These items are handled inside
3038 Warnings: No context switches are allowed while executing this function.
3040 static void sFlushTxFIFO(CHANNEL_T * ChP)
3043 Byte_t Ch; /* channel number within AIOP */
3044 int TxEnabled; /* 1 if transmitter enabled */
3046 if (sGetTxCnt(ChP) == 0) /* Tx FIFO empty */
3047 return; /* don't need to flush */
3050 if (ChP->TxControl[3] & TX_ENABLE) {
3052 sDisTransmit(ChP); /* disable transmitter */
3054 sStopRxProcessor(ChP); /* stop Rx processor */
3055 for (i = 0; i < 4000 / 200; i++) /* delay 4 uS to allow proc to stop */
3056 sInB(ChP->IntChan); /* depends on bus i/o timing */
3057 Ch = (Byte_t) sGetChanNum(ChP);
3058 sOutB(ChP->Cmd, Ch | RESTXFCNT); /* apply reset Tx FIFO count */
3059 sOutB(ChP->Cmd, Ch); /* remove reset Tx FIFO count */
3060 sOutW((WordIO_t) ChP->IndexAddr, ChP->TxFIFOPtrs); /* clear Tx in/out ptrs */
3061 sOutW(ChP->IndexData, 0);
3063 sEnTransmit(ChP); /* enable transmitter */
3064 sStartRxProcessor(ChP); /* restart Rx processor */
3067 /***************************************************************************
3068 Function: sWriteTxPrioByte
3069 Purpose: Write a byte of priority transmit data to a channel
3070 Call: sWriteTxPrioByte(ChP,Data)
3071 CHANNEL_T *ChP; Ptr to channel structure
3072 Byte_t Data; The transmit data byte
3074 Return: int: 1 if the bytes is successfully written, otherwise 0.
3076 Comments: The priority byte is transmitted before any data in the Tx FIFO.
3078 Warnings: No context switches are allowed while executing this function.
3080 static int sWriteTxPrioByte(CHANNEL_T * ChP, Byte_t Data)
3082 Byte_t DWBuf[4]; /* buffer for double word writes */
3083 Word_t *WordPtr; /* must be far because Win SS != DS */
3084 register DWordIO_t IndexAddr;
3086 if (sGetTxCnt(ChP) > 1) { /* write it to Tx priority buffer */
3087 IndexAddr = ChP->IndexAddr;
3088 sOutW((WordIO_t) IndexAddr, ChP->TxPrioCnt); /* get priority buffer status */
3089 if (sInB((ByteIO_t) ChP->IndexData) & PRI_PEND) /* priority buffer busy */
3090 return (0); /* nothing sent */
3092 WordPtr = (Word_t *) (&DWBuf[0]);
3093 *WordPtr = ChP->TxPrioBuf; /* data byte address */
3095 DWBuf[2] = Data; /* data byte value */
3096 sOutDW(IndexAddr, *((DWord_t *) (&DWBuf[0]))); /* write it out */
3098 *WordPtr = ChP->TxPrioCnt; /* Tx priority count address */
3100 DWBuf[2] = PRI_PEND + 1; /* indicate 1 byte pending */
3101 DWBuf[3] = 0; /* priority buffer pointer */
3102 sOutDW(IndexAddr, *((DWord_t *) (&DWBuf[0]))); /* write it out */
3103 } else { /* write it to Tx FIFO */
3105 sWriteTxByte(sGetTxRxDataIO(ChP), Data);
3107 return (1); /* 1 byte sent */
3110 /***************************************************************************
3111 Function: sEnInterrupts
3112 Purpose: Enable one or more interrupts for a channel
3113 Call: sEnInterrupts(ChP,Flags)
3114 CHANNEL_T *ChP; Ptr to channel structure
3115 Word_t Flags: Interrupt enable flags, can be any combination
3116 of the following flags:
3117 TXINT_EN: Interrupt on Tx FIFO empty
3118 RXINT_EN: Interrupt on Rx FIFO at trigger level (see
3120 SRCINT_EN: Interrupt on SRC (Special Rx Condition)
3121 MCINT_EN: Interrupt on modem input change
3122 CHANINT_EN: Allow channel interrupt signal to the AIOP's
3123 Interrupt Channel Register.
3125 Comments: If an interrupt enable flag is set in Flags, that interrupt will be
3126 enabled. If an interrupt enable flag is not set in Flags, that
3127 interrupt will not be changed. Interrupts can be disabled with
3128 function sDisInterrupts().
3130 This function sets the appropriate bit for the channel in the AIOP's
3131 Interrupt Mask Register if the CHANINT_EN flag is set. This allows
3132 this channel's bit to be set in the AIOP's Interrupt Channel Register.
3134 Interrupts must also be globally enabled before channel interrupts
3135 will be passed on to the host. This is done with function
3138 In some cases it may be desirable to disable interrupts globally but
3139 enable channel interrupts. This would allow the global interrupt
3140 status register to be used to determine which AIOPs need service.
3142 static void sEnInterrupts(CHANNEL_T * ChP, Word_t Flags)
3144 Byte_t Mask; /* Interrupt Mask Register */
3146 ChP->RxControl[2] |=
3147 ((Byte_t) Flags & (RXINT_EN | SRCINT_EN | MCINT_EN));
3149 sOutDW(ChP->IndexAddr, *(DWord_t *) & ChP->RxControl[0]);
3151 ChP->TxControl[2] |= ((Byte_t) Flags & TXINT_EN);
3153 sOutDW(ChP->IndexAddr, *(DWord_t *) & ChP->TxControl[0]);
3155 if (Flags & CHANINT_EN) {
3156 Mask = sInB(ChP->IntMask) | sBitMapSetTbl[ChP->ChanNum];
3157 sOutB(ChP->IntMask, Mask);
3161 /***************************************************************************
3162 Function: sDisInterrupts
3163 Purpose: Disable one or more interrupts for a channel
3164 Call: sDisInterrupts(ChP,Flags)
3165 CHANNEL_T *ChP; Ptr to channel structure
3166 Word_t Flags: Interrupt flags, can be any combination
3167 of the following flags:
3168 TXINT_EN: Interrupt on Tx FIFO empty
3169 RXINT_EN: Interrupt on Rx FIFO at trigger level (see
3171 SRCINT_EN: Interrupt on SRC (Special Rx Condition)
3172 MCINT_EN: Interrupt on modem input change
3173 CHANINT_EN: Disable channel interrupt signal to the
3174 AIOP's Interrupt Channel Register.
3176 Comments: If an interrupt flag is set in Flags, that interrupt will be
3177 disabled. If an interrupt flag is not set in Flags, that
3178 interrupt will not be changed. Interrupts can be enabled with
3179 function sEnInterrupts().
3181 This function clears the appropriate bit for the channel in the AIOP's
3182 Interrupt Mask Register if the CHANINT_EN flag is set. This blocks
3183 this channel's bit from being set in the AIOP's Interrupt Channel
3186 static void sDisInterrupts(CHANNEL_T * ChP, Word_t Flags)
3188 Byte_t Mask; /* Interrupt Mask Register */
3190 ChP->RxControl[2] &=
3191 ~((Byte_t) Flags & (RXINT_EN | SRCINT_EN | MCINT_EN));
3192 sOutDW(ChP->IndexAddr, *(DWord_t *) & ChP->RxControl[0]);
3193 ChP->TxControl[2] &= ~((Byte_t) Flags & TXINT_EN);
3194 sOutDW(ChP->IndexAddr, *(DWord_t *) & ChP->TxControl[0]);
3196 if (Flags & CHANINT_EN) {
3197 Mask = sInB(ChP->IntMask) & sBitMapClrTbl[ChP->ChanNum];
3198 sOutB(ChP->IntMask, Mask);
3202 static void sSetInterfaceMode(CHANNEL_T * ChP, Byte_t mode)
3204 sOutB(ChP->CtlP->AiopIO[2], (mode & 0x18) | ChP->ChanNum);
3208 * Not an official SSCI function, but how to reset RocketModems.
3211 static void sModemReset(CONTROLLER_T * CtlP, int chan, int on)
3216 addr = CtlP->AiopIO[0] + 0x400;
3217 val = sInB(CtlP->MReg3IO);
3218 /* if AIOP[1] is not enabled, enable it */
3219 if ((val & 2) == 0) {
3220 val = sInB(CtlP->MReg2IO);
3221 sOutB(CtlP->MReg2IO, (val & 0xfc) | (1 & 0x03));
3222 sOutB(CtlP->MBaseIO, (unsigned char) (addr >> 6));
3228 sOutB(addr + chan, 0); /* apply or remove reset */
3233 * Not an official SSCI function, but how to reset RocketModems.
3236 static void sPCIModemReset(CONTROLLER_T * CtlP, int chan, int on)
3240 addr = CtlP->AiopIO[0] + 0x40; /* 2nd AIOP */
3243 sOutB(addr + chan, 0); /* apply or remove reset */
3246 /* Resets the speaker controller on RocketModem II and III devices */
3247 static void rmSpeakerReset(CONTROLLER_T * CtlP, unsigned long model)
3251 /* RocketModem II speaker control is at the 8th port location of offset 0x40 */
3252 if ((model == MODEL_RP4M) || (model == MODEL_RP6M)) {
3253 addr = CtlP->AiopIO[0] + 0x4F;
3257 /* RocketModem III speaker control is at the 1st port location of offset 0x80 */
3258 if ((model == MODEL_UPCI_RM3_8PORT)
3259 || (model == MODEL_UPCI_RM3_4PORT)) {
3260 addr = CtlP->AiopIO[0] + 0x88;
3265 /* Returns the line number given the controller (board), aiop and channel number */
3266 static unsigned char GetLineNumber(int ctrl, int aiop, int ch)
3268 return lineNumbers[(ctrl << 5) | (aiop << 3) | ch];
3272 * Stores the line number associated with a given controller (board), aiop
3273 * and channel number.
3274 * Returns: The line number assigned
3276 static unsigned char SetLineNumber(int ctrl, int aiop, int ch)
3278 lineNumbers[(ctrl << 5) | (aiop << 3) | ch] = nextLineNumber++;
3279 return (nextLineNumber - 1);