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/serial.h>
76 #include <linux/string.h>
77 #include <linux/fcntl.h>
78 #include <linux/ptrace.h>
79 #include <linux/mutex.h>
80 #include <linux/ioport.h>
81 #include <linux/delay.h>
82 #include <linux/completion.h>
83 #include <linux/wait.h>
84 #include <linux/pci.h>
85 #include <linux/uaccess.h>
86 #include <asm/atomic.h>
87 #include <asm/unaligned.h>
88 #include <linux/bitops.h>
89 #include <linux/spinlock.h>
90 #include <linux/init.h>
92 /****** RocketPort includes ******/
94 #include "rocket_int.h"
97 #define ROCKET_VERSION "2.09"
98 #define ROCKET_DATE "12-June-2003"
100 /****** RocketPort Local Variables ******/
102 static void rp_do_poll(unsigned long dummy);
104 static struct tty_driver *rocket_driver;
106 static struct rocket_version driver_version = {
107 ROCKET_VERSION, ROCKET_DATE
110 static struct r_port *rp_table[MAX_RP_PORTS]; /* The main repository of serial port state information. */
111 static unsigned int xmit_flags[NUM_BOARDS]; /* Bit significant, indicates port had data to transmit. */
112 /* eg. Bit 0 indicates port 0 has xmit data, ... */
113 static atomic_t rp_num_ports_open; /* Number of serial ports open */
114 static DEFINE_TIMER(rocket_timer, rp_do_poll, 0, 0);
116 static unsigned long board1; /* ISA addresses, retrieved from rocketport.conf */
117 static unsigned long board2;
118 static unsigned long board3;
119 static unsigned long board4;
120 static unsigned long controller;
121 static int support_low_speed;
122 static unsigned long modem1;
123 static unsigned long modem2;
124 static unsigned long modem3;
125 static unsigned long modem4;
126 static unsigned long pc104_1[8];
127 static unsigned long pc104_2[8];
128 static unsigned long pc104_3[8];
129 static unsigned long pc104_4[8];
130 static unsigned long *pc104[4] = { pc104_1, pc104_2, pc104_3, pc104_4 };
132 static int rp_baud_base[NUM_BOARDS]; /* Board config info (Someday make a per-board structure) */
133 static unsigned long rcktpt_io_addr[NUM_BOARDS];
134 static int rcktpt_type[NUM_BOARDS];
135 static int is_PCI[NUM_BOARDS];
136 static rocketModel_t rocketModel[NUM_BOARDS];
137 static int max_board;
138 static const struct tty_port_operations rocket_port_ops;
141 * The following arrays define the interrupt bits corresponding to each AIOP.
142 * These bits are different between the ISA and regular PCI boards and the
143 * Universal PCI boards.
146 static Word_t aiop_intr_bits[AIOP_CTL_SIZE] = {
153 static Word_t upci_aiop_intr_bits[AIOP_CTL_SIZE] = {
154 UPCI_AIOP_INTR_BIT_0,
155 UPCI_AIOP_INTR_BIT_1,
156 UPCI_AIOP_INTR_BIT_2,
160 static Byte_t RData[RDATASIZE] = {
161 0x00, 0x09, 0xf6, 0x82,
162 0x02, 0x09, 0x86, 0xfb,
163 0x04, 0x09, 0x00, 0x0a,
164 0x06, 0x09, 0x01, 0x0a,
165 0x08, 0x09, 0x8a, 0x13,
166 0x0a, 0x09, 0xc5, 0x11,
167 0x0c, 0x09, 0x86, 0x85,
168 0x0e, 0x09, 0x20, 0x0a,
169 0x10, 0x09, 0x21, 0x0a,
170 0x12, 0x09, 0x41, 0xff,
171 0x14, 0x09, 0x82, 0x00,
172 0x16, 0x09, 0x82, 0x7b,
173 0x18, 0x09, 0x8a, 0x7d,
174 0x1a, 0x09, 0x88, 0x81,
175 0x1c, 0x09, 0x86, 0x7a,
176 0x1e, 0x09, 0x84, 0x81,
177 0x20, 0x09, 0x82, 0x7c,
178 0x22, 0x09, 0x0a, 0x0a
181 static Byte_t RRegData[RREGDATASIZE] = {
182 0x00, 0x09, 0xf6, 0x82, /* 00: Stop Rx processor */
183 0x08, 0x09, 0x8a, 0x13, /* 04: Tx software flow control */
184 0x0a, 0x09, 0xc5, 0x11, /* 08: XON char */
185 0x0c, 0x09, 0x86, 0x85, /* 0c: XANY */
186 0x12, 0x09, 0x41, 0xff, /* 10: Rx mask char */
187 0x14, 0x09, 0x82, 0x00, /* 14: Compare/Ignore #0 */
188 0x16, 0x09, 0x82, 0x7b, /* 18: Compare #1 */
189 0x18, 0x09, 0x8a, 0x7d, /* 1c: Compare #2 */
190 0x1a, 0x09, 0x88, 0x81, /* 20: Interrupt #1 */
191 0x1c, 0x09, 0x86, 0x7a, /* 24: Ignore/Replace #1 */
192 0x1e, 0x09, 0x84, 0x81, /* 28: Interrupt #2 */
193 0x20, 0x09, 0x82, 0x7c, /* 2c: Ignore/Replace #2 */
194 0x22, 0x09, 0x0a, 0x0a /* 30: Rx FIFO Enable */
197 static CONTROLLER_T sController[CTL_SIZE] = {
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}},
204 {-1, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, {0, 0, 0, 0},
205 {0, 0, 0, 0}, {-1, -1, -1, -1}, {0, 0, 0, 0}}
208 static Byte_t sBitMapClrTbl[8] = {
209 0xfe, 0xfd, 0xfb, 0xf7, 0xef, 0xdf, 0xbf, 0x7f
212 static Byte_t sBitMapSetTbl[8] = {
213 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80
216 static int sClockPrescale = 0x14;
219 * Line number is the ttySIx number (x), the Minor number. We
220 * assign them sequentially, starting at zero. The following
221 * array keeps track of the line number assigned to a given board/aiop/channel.
223 static unsigned char lineNumbers[MAX_RP_PORTS];
224 static unsigned long nextLineNumber;
226 /***** RocketPort Static Prototypes *********/
227 static int __init init_ISA(int i);
228 static void rp_wait_until_sent(struct tty_struct *tty, int timeout);
229 static void rp_flush_buffer(struct tty_struct *tty);
230 static void rmSpeakerReset(CONTROLLER_T * CtlP, unsigned long model);
231 static unsigned char GetLineNumber(int ctrl, int aiop, int ch);
232 static unsigned char SetLineNumber(int ctrl, int aiop, int ch);
233 static void rp_start(struct tty_struct *tty);
234 static int sInitChan(CONTROLLER_T * CtlP, CHANNEL_T * ChP, int AiopNum,
236 static void sSetInterfaceMode(CHANNEL_T * ChP, Byte_t mode);
237 static void sFlushRxFIFO(CHANNEL_T * ChP);
238 static void sFlushTxFIFO(CHANNEL_T * ChP);
239 static void sEnInterrupts(CHANNEL_T * ChP, Word_t Flags);
240 static void sDisInterrupts(CHANNEL_T * ChP, Word_t Flags);
241 static void sModemReset(CONTROLLER_T * CtlP, int chan, int on);
242 static void sPCIModemReset(CONTROLLER_T * CtlP, int chan, int on);
243 static int sWriteTxPrioByte(CHANNEL_T * ChP, Byte_t Data);
244 static int sPCIInitController(CONTROLLER_T * CtlP, int CtlNum,
245 ByteIO_t * AiopIOList, int AiopIOListSize,
246 WordIO_t ConfigIO, int IRQNum, Byte_t Frequency,
247 int PeriodicOnly, int altChanRingIndicator,
249 static int sInitController(CONTROLLER_T * CtlP, int CtlNum, ByteIO_t MudbacIO,
250 ByteIO_t * AiopIOList, int AiopIOListSize,
251 int IRQNum, Byte_t Frequency, int PeriodicOnly);
252 static int sReadAiopID(ByteIO_t io);
253 static int sReadAiopNumChan(WordIO_t io);
255 MODULE_AUTHOR("Theodore Ts'o");
256 MODULE_DESCRIPTION("Comtrol RocketPort driver");
257 module_param(board1, ulong, 0);
258 MODULE_PARM_DESC(board1, "I/O port for (ISA) board #1");
259 module_param(board2, ulong, 0);
260 MODULE_PARM_DESC(board2, "I/O port for (ISA) board #2");
261 module_param(board3, ulong, 0);
262 MODULE_PARM_DESC(board3, "I/O port for (ISA) board #3");
263 module_param(board4, ulong, 0);
264 MODULE_PARM_DESC(board4, "I/O port for (ISA) board #4");
265 module_param(controller, ulong, 0);
266 MODULE_PARM_DESC(controller, "I/O port for (ISA) rocketport controller");
267 module_param(support_low_speed, bool, 0);
268 MODULE_PARM_DESC(support_low_speed, "1 means support 50 baud, 0 means support 460400 baud");
269 module_param(modem1, ulong, 0);
270 MODULE_PARM_DESC(modem1, "1 means (ISA) board #1 is a RocketModem");
271 module_param(modem2, ulong, 0);
272 MODULE_PARM_DESC(modem2, "1 means (ISA) board #2 is a RocketModem");
273 module_param(modem3, ulong, 0);
274 MODULE_PARM_DESC(modem3, "1 means (ISA) board #3 is a RocketModem");
275 module_param(modem4, ulong, 0);
276 MODULE_PARM_DESC(modem4, "1 means (ISA) board #4 is a RocketModem");
277 module_param_array(pc104_1, ulong, NULL, 0);
278 MODULE_PARM_DESC(pc104_1, "set interface types for ISA(PC104) board #1 (e.g. pc104_1=232,232,485,485,...");
279 module_param_array(pc104_2, ulong, NULL, 0);
280 MODULE_PARM_DESC(pc104_2, "set interface types for ISA(PC104) board #2 (e.g. pc104_2=232,232,485,485,...");
281 module_param_array(pc104_3, ulong, NULL, 0);
282 MODULE_PARM_DESC(pc104_3, "set interface types for ISA(PC104) board #3 (e.g. pc104_3=232,232,485,485,...");
283 module_param_array(pc104_4, ulong, NULL, 0);
284 MODULE_PARM_DESC(pc104_4, "set interface types for ISA(PC104) board #4 (e.g. pc104_4=232,232,485,485,...");
286 static int rp_init(void);
287 static void rp_cleanup_module(void);
289 module_init(rp_init);
290 module_exit(rp_cleanup_module);
293 MODULE_LICENSE("Dual BSD/GPL");
295 /*************************************************************************/
296 /* Module code starts here */
298 static inline int rocket_paranoia_check(struct r_port *info,
301 #ifdef ROCKET_PARANOIA_CHECK
304 if (info->magic != RPORT_MAGIC) {
305 printk(KERN_WARNING "Warning: bad magic number for rocketport "
306 "struct in %s\n", routine);
314 /* Serial port receive data function. Called (from timer poll) when an AIOPIC signals
315 * that receive data is present on a serial port. Pulls data from FIFO, moves it into the
318 static void rp_do_receive(struct r_port *info,
319 struct tty_struct *tty,
320 CHANNEL_t * cp, unsigned int ChanStatus)
322 unsigned int CharNStat;
323 int ToRecv, wRecv, space;
326 ToRecv = sGetRxCnt(cp);
327 #ifdef ROCKET_DEBUG_INTR
328 printk(KERN_INFO "rp_do_receive(%d)...\n", ToRecv);
334 * if status indicates there are errored characters in the
335 * FIFO, then enter status mode (a word in FIFO holds
336 * character and status).
338 if (ChanStatus & (RXFOVERFL | RXBREAK | RXFRAME | RXPARITY)) {
339 if (!(ChanStatus & STATMODE)) {
340 #ifdef ROCKET_DEBUG_RECEIVE
341 printk(KERN_INFO "Entering STATMODE...\n");
343 ChanStatus |= STATMODE;
349 * if we previously entered status mode, then read down the
350 * FIFO one word at a time, pulling apart the character and
351 * the status. Update error counters depending on status
353 if (ChanStatus & STATMODE) {
354 #ifdef ROCKET_DEBUG_RECEIVE
355 printk(KERN_INFO "Ignore %x, read %x...\n",
356 info->ignore_status_mask, info->read_status_mask);
361 CharNStat = sInW(sGetTxRxDataIO(cp));
362 #ifdef ROCKET_DEBUG_RECEIVE
363 printk(KERN_INFO "%x...\n", CharNStat);
365 if (CharNStat & STMBREAKH)
366 CharNStat &= ~(STMFRAMEH | STMPARITYH);
367 if (CharNStat & info->ignore_status_mask) {
371 CharNStat &= info->read_status_mask;
372 if (CharNStat & STMBREAKH)
374 else if (CharNStat & STMPARITYH)
376 else if (CharNStat & STMFRAMEH)
378 else if (CharNStat & STMRCVROVRH)
382 tty_insert_flip_char(tty, CharNStat & 0xff, flag);
387 * after we've emptied the FIFO in status mode, turn
388 * status mode back off
390 if (sGetRxCnt(cp) == 0) {
391 #ifdef ROCKET_DEBUG_RECEIVE
392 printk(KERN_INFO "Status mode off.\n");
394 sDisRxStatusMode(cp);
398 * we aren't in status mode, so read down the FIFO two
399 * characters at time by doing repeated word IO
402 space = tty_prepare_flip_string(tty, &cbuf, ToRecv);
403 if (space < ToRecv) {
404 #ifdef ROCKET_DEBUG_RECEIVE
405 printk(KERN_INFO "rp_do_receive:insufficient space ToRecv=%d space=%d\n", ToRecv, space);
413 sInStrW(sGetTxRxDataIO(cp), (unsigned short *) cbuf, wRecv);
415 cbuf[ToRecv - 1] = sInB(sGetTxRxDataIO(cp));
417 /* Push the data up to the tty layer */
418 tty_flip_buffer_push(tty);
422 * Serial port transmit data function. Called from the timer polling loop as a
423 * result of a bit set in xmit_flags[], indicating data (from the tty layer) is ready
424 * to be sent out the serial port. Data is buffered in rp_table[line].xmit_buf, it is
425 * moved to the port's xmit FIFO. *info is critical data, protected by spinlocks.
427 static void rp_do_transmit(struct r_port *info)
430 CHANNEL_t *cp = &info->channel;
431 struct tty_struct *tty;
434 #ifdef ROCKET_DEBUG_INTR
435 printk(KERN_DEBUG "%s\n", __func__);
439 tty = tty_port_tty_get(&info->port);
442 printk(KERN_WARNING "rp: WARNING %s called with tty==NULL\n", __func__);
443 clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
447 spin_lock_irqsave(&info->slock, flags);
448 info->xmit_fifo_room = TXFIFO_SIZE - sGetTxCnt(cp);
450 /* Loop sending data to FIFO until done or FIFO full */
452 if (tty->stopped || tty->hw_stopped)
454 c = min(info->xmit_fifo_room, info->xmit_cnt);
455 c = min(c, XMIT_BUF_SIZE - info->xmit_tail);
456 if (c <= 0 || info->xmit_fifo_room <= 0)
458 sOutStrW(sGetTxRxDataIO(cp), (unsigned short *) (info->xmit_buf + info->xmit_tail), c / 2);
460 sOutB(sGetTxRxDataIO(cp), info->xmit_buf[info->xmit_tail + c - 1]);
461 info->xmit_tail += c;
462 info->xmit_tail &= XMIT_BUF_SIZE - 1;
464 info->xmit_fifo_room -= c;
465 #ifdef ROCKET_DEBUG_INTR
466 printk(KERN_INFO "tx %d chars...\n", c);
470 if (info->xmit_cnt == 0)
471 clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
473 if (info->xmit_cnt < WAKEUP_CHARS) {
475 #ifdef ROCKETPORT_HAVE_POLL_WAIT
476 wake_up_interruptible(&tty->poll_wait);
480 spin_unlock_irqrestore(&info->slock, flags);
483 #ifdef ROCKET_DEBUG_INTR
484 printk(KERN_DEBUG "(%d,%d,%d,%d)...\n", info->xmit_cnt, info->xmit_head,
485 info->xmit_tail, info->xmit_fifo_room);
490 * Called when a serial port signals it has read data in it's RX FIFO.
491 * It checks what interrupts are pending and services them, including
492 * receiving serial data.
494 static void rp_handle_port(struct r_port *info)
497 struct tty_struct *tty;
498 unsigned int IntMask, ChanStatus;
503 if ((info->port.flags & ASYNC_INITIALIZED) == 0) {
504 printk(KERN_WARNING "rp: WARNING: rp_handle_port called with "
505 "info->flags & NOT_INIT\n");
508 tty = tty_port_tty_get(&info->port);
510 printk(KERN_WARNING "rp: WARNING: rp_handle_port called with "
516 IntMask = sGetChanIntID(cp) & info->intmask;
517 #ifdef ROCKET_DEBUG_INTR
518 printk(KERN_INFO "rp_interrupt %02x...\n", IntMask);
520 ChanStatus = sGetChanStatus(cp);
521 if (IntMask & RXF_TRIG) { /* Rx FIFO trigger level */
522 rp_do_receive(info, tty, cp, ChanStatus);
524 if (IntMask & DELTA_CD) { /* CD change */
525 #if (defined(ROCKET_DEBUG_OPEN) || defined(ROCKET_DEBUG_INTR) || defined(ROCKET_DEBUG_HANGUP))
526 printk(KERN_INFO "ttyR%d CD now %s...\n", info->line,
527 (ChanStatus & CD_ACT) ? "on" : "off");
529 if (!(ChanStatus & CD_ACT) && info->cd_status) {
530 #ifdef ROCKET_DEBUG_HANGUP
531 printk(KERN_INFO "CD drop, calling hangup.\n");
535 info->cd_status = (ChanStatus & CD_ACT) ? 1 : 0;
536 wake_up_interruptible(&info->port.open_wait);
538 #ifdef ROCKET_DEBUG_INTR
539 if (IntMask & DELTA_CTS) { /* CTS change */
540 printk(KERN_INFO "CTS change...\n");
542 if (IntMask & DELTA_DSR) { /* DSR change */
543 printk(KERN_INFO "DSR change...\n");
550 * The top level polling routine. Repeats every 1/100 HZ (10ms).
552 static void rp_do_poll(unsigned long dummy)
555 int ctrl, aiop, ch, line;
556 unsigned int xmitmask, i;
557 unsigned int CtlMask;
558 unsigned char AiopMask;
561 /* Walk through all the boards (ctrl's) */
562 for (ctrl = 0; ctrl < max_board; ctrl++) {
563 if (rcktpt_io_addr[ctrl] <= 0)
566 /* Get a ptr to the board's control struct */
567 ctlp = sCtlNumToCtlPtr(ctrl);
569 /* Get the interrupt status from the board */
571 if (ctlp->BusType == isPCI)
572 CtlMask = sPCIGetControllerIntStatus(ctlp);
575 CtlMask = sGetControllerIntStatus(ctlp);
577 /* Check if any AIOP read bits are set */
578 for (aiop = 0; CtlMask; aiop++) {
579 bit = ctlp->AiopIntrBits[aiop];
582 AiopMask = sGetAiopIntStatus(ctlp, aiop);
584 /* Check if any port read bits are set */
585 for (ch = 0; AiopMask; AiopMask >>= 1, ch++) {
588 /* Get the line number (/dev/ttyRx number). */
589 /* Read the data from the port. */
590 line = GetLineNumber(ctrl, aiop, ch);
591 rp_handle_port(rp_table[line]);
597 xmitmask = xmit_flags[ctrl];
600 * xmit_flags contains bit-significant flags, indicating there is data
601 * to xmit on the port. Bit 0 is port 0 on this board, bit 1 is port
602 * 1, ... (32 total possible). The variable i has the aiop and ch
603 * numbers encoded in it (port 0-7 are aiop0, 8-15 are aiop1, etc).
606 for (i = 0; i < rocketModel[ctrl].numPorts; i++) {
607 if (xmitmask & (1 << i)) {
608 aiop = (i & 0x18) >> 3;
610 line = GetLineNumber(ctrl, aiop, ch);
611 rp_do_transmit(rp_table[line]);
618 * Reset the timer so we get called at the next clock tick (10ms).
620 if (atomic_read(&rp_num_ports_open))
621 mod_timer(&rocket_timer, jiffies + POLL_PERIOD);
625 * Initializes the r_port structure for a port, as well as enabling the port on
627 * Inputs: board, aiop, chan numbers
629 static void init_r_port(int board, int aiop, int chan, struct pci_dev *pci_dev)
636 /* Get the next available line number */
637 line = SetLineNumber(board, aiop, chan);
639 ctlp = sCtlNumToCtlPtr(board);
641 /* Get a r_port struct for the port, fill it in and save it globally, indexed by line number */
642 info = kzalloc(sizeof (struct r_port), GFP_KERNEL);
644 printk(KERN_ERR "Couldn't allocate info struct for line #%d\n",
649 info->magic = RPORT_MAGIC;
655 tty_port_init(&info->port);
656 info->port.ops = &rocket_port_ops;
657 init_completion(&info->close_wait);
658 info->flags &= ~ROCKET_MODE_MASK;
659 switch (pc104[board][line]) {
661 info->flags |= ROCKET_MODE_RS422;
664 info->flags |= ROCKET_MODE_RS485;
668 info->flags |= ROCKET_MODE_RS232;
672 info->intmask = RXF_TRIG | TXFIFO_MT | SRC_INT | DELTA_CD | DELTA_CTS | DELTA_DSR;
673 if (sInitChan(ctlp, &info->channel, aiop, chan) == 0) {
674 printk(KERN_ERR "RocketPort sInitChan(%d, %d, %d) failed!\n",
680 rocketMode = info->flags & ROCKET_MODE_MASK;
682 if ((info->flags & ROCKET_RTS_TOGGLE) || (rocketMode == ROCKET_MODE_RS485))
683 sEnRTSToggle(&info->channel);
685 sDisRTSToggle(&info->channel);
687 if (ctlp->boardType == ROCKET_TYPE_PC104) {
688 switch (rocketMode) {
689 case ROCKET_MODE_RS485:
690 sSetInterfaceMode(&info->channel, InterfaceModeRS485);
692 case ROCKET_MODE_RS422:
693 sSetInterfaceMode(&info->channel, InterfaceModeRS422);
695 case ROCKET_MODE_RS232:
697 if (info->flags & ROCKET_RTS_TOGGLE)
698 sSetInterfaceMode(&info->channel, InterfaceModeRS232T);
700 sSetInterfaceMode(&info->channel, InterfaceModeRS232);
704 spin_lock_init(&info->slock);
705 mutex_init(&info->write_mtx);
706 rp_table[line] = info;
707 tty_register_device(rocket_driver, line, pci_dev ? &pci_dev->dev :
712 * Configures a rocketport port according to its termio settings. Called from
713 * user mode into the driver (exception handler). *info CD manipulation is spinlock protected.
715 static void configure_r_port(struct tty_struct *tty, struct r_port *info,
716 struct ktermios *old_termios)
721 int bits, baud, divisor;
723 struct ktermios *t = tty->termios;
728 /* Byte size and parity */
729 if ((cflag & CSIZE) == CS8) {
736 if (cflag & CSTOPB) {
743 if (cflag & PARENB) {
746 if (cflag & PARODD) {
756 baud = tty_get_baud_rate(tty);
759 divisor = ((rp_baud_base[info->board] + (baud >> 1)) / baud) - 1;
760 if ((divisor >= 8192 || divisor < 0) && old_termios) {
761 baud = tty_termios_baud_rate(old_termios);
764 divisor = (rp_baud_base[info->board] / baud) - 1;
766 if (divisor >= 8192 || divisor < 0) {
768 divisor = (rp_baud_base[info->board] / baud) - 1;
770 info->cps = baud / bits;
771 sSetBaud(cp, divisor);
773 /* FIXME: Should really back compute a baud rate from the divisor */
774 tty_encode_baud_rate(tty, baud, baud);
776 if (cflag & CRTSCTS) {
777 info->intmask |= DELTA_CTS;
780 info->intmask &= ~DELTA_CTS;
783 if (cflag & CLOCAL) {
784 info->intmask &= ~DELTA_CD;
786 spin_lock_irqsave(&info->slock, flags);
787 if (sGetChanStatus(cp) & CD_ACT)
791 info->intmask |= DELTA_CD;
792 spin_unlock_irqrestore(&info->slock, flags);
796 * Handle software flow control in the board
798 #ifdef ROCKET_SOFT_FLOW
800 sEnTxSoftFlowCtl(cp);
806 sSetTxXONChar(cp, START_CHAR(tty));
807 sSetTxXOFFChar(cp, STOP_CHAR(tty));
809 sDisTxSoftFlowCtl(cp);
816 * Set up ignore/read mask words
818 info->read_status_mask = STMRCVROVRH | 0xFF;
820 info->read_status_mask |= STMFRAMEH | STMPARITYH;
821 if (I_BRKINT(tty) || I_PARMRK(tty))
822 info->read_status_mask |= STMBREAKH;
825 * Characters to ignore
827 info->ignore_status_mask = 0;
829 info->ignore_status_mask |= STMFRAMEH | STMPARITYH;
831 info->ignore_status_mask |= STMBREAKH;
833 * If we're ignoring parity and break indicators,
834 * ignore overruns too. (For real raw support).
837 info->ignore_status_mask |= STMRCVROVRH;
840 rocketMode = info->flags & ROCKET_MODE_MASK;
842 if ((info->flags & ROCKET_RTS_TOGGLE)
843 || (rocketMode == ROCKET_MODE_RS485))
848 sSetRTS(&info->channel);
850 if (cp->CtlP->boardType == ROCKET_TYPE_PC104) {
851 switch (rocketMode) {
852 case ROCKET_MODE_RS485:
853 sSetInterfaceMode(cp, InterfaceModeRS485);
855 case ROCKET_MODE_RS422:
856 sSetInterfaceMode(cp, InterfaceModeRS422);
858 case ROCKET_MODE_RS232:
860 if (info->flags & ROCKET_RTS_TOGGLE)
861 sSetInterfaceMode(cp, InterfaceModeRS232T);
863 sSetInterfaceMode(cp, InterfaceModeRS232);
869 static int carrier_raised(struct tty_port *port)
871 struct r_port *info = container_of(port, struct r_port, port);
872 return (sGetChanStatusLo(&info->channel) & CD_ACT) ? 1 : 0;
875 static void dtr_rts(struct tty_port *port, int on)
877 struct r_port *info = container_of(port, struct r_port, port);
879 sSetDTR(&info->channel);
880 sSetRTS(&info->channel);
882 sClrDTR(&info->channel);
883 sClrRTS(&info->channel);
888 * Exception handler that opens a serial port. Creates xmit_buf storage, fills in
889 * port's r_port struct. Initializes the port hardware.
891 static int rp_open(struct tty_struct *tty, struct file *filp)
894 struct tty_port *port;
895 int line = 0, retval;
900 if (line < 0 || line >= MAX_RP_PORTS || ((info = rp_table[line]) == NULL))
904 page = __get_free_page(GFP_KERNEL);
908 if (port->flags & ASYNC_CLOSING) {
909 retval = wait_for_completion_interruptible(&info->close_wait);
913 return ((port->flags & ASYNC_HUP_NOTIFY) ? -EAGAIN : -ERESTARTSYS);
917 * We must not sleep from here until the port is marked fully in use.
922 info->xmit_buf = (unsigned char *) page;
924 tty->driver_data = info;
925 tty_port_tty_set(port, tty);
927 if (port->count++ == 0) {
928 atomic_inc(&rp_num_ports_open);
930 #ifdef ROCKET_DEBUG_OPEN
931 printk(KERN_INFO "rocket mod++ = %d...\n",
932 atomic_read(&rp_num_ports_open));
935 #ifdef ROCKET_DEBUG_OPEN
936 printk(KERN_INFO "rp_open ttyR%d, count=%d\n", info->line, info->port.count);
940 * Info->count is now 1; so it's safe to sleep now.
942 if (!test_bit(ASYNCB_INITIALIZED, &port->flags)) {
944 sSetRxTrigger(cp, TRIG_1);
945 if (sGetChanStatus(cp) & CD_ACT)
949 sDisRxStatusMode(cp);
953 sEnInterrupts(cp, (TXINT_EN | MCINT_EN | RXINT_EN | SRCINT_EN | CHANINT_EN));
954 sSetRxTrigger(cp, TRIG_1);
957 sDisRxStatusMode(cp);
961 sDisTxSoftFlowCtl(cp);
966 set_bit(ASYNCB_INITIALIZED, &info->port.flags);
969 * Set up the tty->alt_speed kludge
971 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_HI)
972 tty->alt_speed = 57600;
973 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_VHI)
974 tty->alt_speed = 115200;
975 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_SHI)
976 tty->alt_speed = 230400;
977 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_WARP)
978 tty->alt_speed = 460800;
980 configure_r_port(tty, info, NULL);
981 if (tty->termios->c_cflag & CBAUD) {
986 /* Starts (or resets) the maint polling loop */
987 mod_timer(&rocket_timer, jiffies + POLL_PERIOD);
989 retval = tty_port_block_til_ready(port, tty, filp);
991 #ifdef ROCKET_DEBUG_OPEN
992 printk(KERN_INFO "rp_open returning after block_til_ready with %d\n", retval);
1000 * Exception handler that closes a serial port. info->port.count is considered critical.
1002 static void rp_close(struct tty_struct *tty, struct file *filp)
1004 struct r_port *info = tty->driver_data;
1005 struct tty_port *port = &info->port;
1009 if (rocket_paranoia_check(info, "rp_close"))
1012 #ifdef ROCKET_DEBUG_OPEN
1013 printk(KERN_INFO "rp_close ttyR%d, count = %d\n", info->line, info->port.count);
1016 if (tty_port_close_start(port, tty, filp) == 0)
1019 mutex_lock(&port->mutex);
1020 cp = &info->channel;
1022 * Before we drop DTR, make sure the UART transmitter
1023 * has completely drained; this is especially
1024 * important if there is a transmit FIFO!
1026 timeout = (sGetTxCnt(cp) + 1) * HZ / info->cps;
1029 rp_wait_until_sent(tty, timeout);
1030 clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
1033 sDisInterrupts(cp, (TXINT_EN | MCINT_EN | RXINT_EN | SRCINT_EN | CHANINT_EN));
1035 sDisTxSoftFlowCtl(cp);
1043 rp_flush_buffer(tty);
1045 tty_ldisc_flush(tty);
1047 clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
1049 /* We can't yet use tty_port_close_end as the buffer handling in this
1050 driver is a bit different to the usual */
1052 if (port->blocked_open) {
1053 if (port->close_delay) {
1054 msleep_interruptible(jiffies_to_msecs(port->close_delay));
1056 wake_up_interruptible(&port->open_wait);
1058 if (info->xmit_buf) {
1059 free_page((unsigned long) info->xmit_buf);
1060 info->xmit_buf = NULL;
1063 spin_lock_irq(&port->lock);
1064 info->port.flags &= ~(ASYNC_INITIALIZED | ASYNC_CLOSING | ASYNC_NORMAL_ACTIVE);
1066 spin_unlock_irq(&port->lock);
1067 mutex_unlock(&port->mutex);
1068 tty_port_tty_set(port, NULL);
1070 wake_up_interruptible(&port->close_wait);
1071 complete_all(&info->close_wait);
1072 atomic_dec(&rp_num_ports_open);
1074 #ifdef ROCKET_DEBUG_OPEN
1075 printk(KERN_INFO "rocket mod-- = %d...\n",
1076 atomic_read(&rp_num_ports_open));
1077 printk(KERN_INFO "rp_close ttyR%d complete shutdown\n", info->line);
1082 static void rp_set_termios(struct tty_struct *tty,
1083 struct ktermios *old_termios)
1085 struct r_port *info = tty->driver_data;
1089 if (rocket_paranoia_check(info, "rp_set_termios"))
1092 cflag = tty->termios->c_cflag;
1095 * This driver doesn't support CS5 or CS6
1097 if (((cflag & CSIZE) == CS5) || ((cflag & CSIZE) == CS6))
1098 tty->termios->c_cflag =
1099 ((cflag & ~CSIZE) | (old_termios->c_cflag & CSIZE));
1101 tty->termios->c_cflag &= ~CMSPAR;
1103 configure_r_port(tty, info, old_termios);
1105 cp = &info->channel;
1107 /* Handle transition to B0 status */
1108 if ((old_termios->c_cflag & CBAUD) && !(tty->termios->c_cflag & CBAUD)) {
1113 /* Handle transition away from B0 status */
1114 if (!(old_termios->c_cflag & CBAUD) && (tty->termios->c_cflag & CBAUD)) {
1115 if (!tty->hw_stopped || !(tty->termios->c_cflag & CRTSCTS))
1120 if ((old_termios->c_cflag & CRTSCTS) && !(tty->termios->c_cflag & CRTSCTS)) {
1121 tty->hw_stopped = 0;
1126 static int rp_break(struct tty_struct *tty, int break_state)
1128 struct r_port *info = tty->driver_data;
1129 unsigned long flags;
1131 if (rocket_paranoia_check(info, "rp_break"))
1134 spin_lock_irqsave(&info->slock, flags);
1135 if (break_state == -1)
1136 sSendBreak(&info->channel);
1138 sClrBreak(&info->channel);
1139 spin_unlock_irqrestore(&info->slock, flags);
1144 * sGetChanRI used to be a macro in rocket_int.h. When the functionality for
1145 * the UPCI boards was added, it was decided to make this a function because
1146 * the macro was getting too complicated. All cases except the first one
1147 * (UPCIRingInd) are taken directly from the original macro.
1149 static int sGetChanRI(CHANNEL_T * ChP)
1151 CONTROLLER_t *CtlP = ChP->CtlP;
1152 int ChanNum = ChP->ChanNum;
1155 if (CtlP->UPCIRingInd)
1156 RingInd = !(sInB(CtlP->UPCIRingInd) & sBitMapSetTbl[ChanNum]);
1157 else if (CtlP->AltChanRingIndicator)
1158 RingInd = sInB((ByteIO_t) (ChP->ChanStat + 8)) & DSR_ACT;
1159 else if (CtlP->boardType == ROCKET_TYPE_PC104)
1160 RingInd = !(sInB(CtlP->AiopIO[3]) & sBitMapSetTbl[ChanNum]);
1165 /********************************************************************************************/
1166 /* Here are the routines used by rp_ioctl. These are all called from exception handlers. */
1169 * Returns the state of the serial modem control lines. These next 2 functions
1170 * are the way kernel versions > 2.5 handle modem control lines rather than IOCTLs.
1172 static int rp_tiocmget(struct tty_struct *tty, struct file *file)
1174 struct r_port *info = tty->driver_data;
1175 unsigned int control, result, ChanStatus;
1177 ChanStatus = sGetChanStatusLo(&info->channel);
1178 control = info->channel.TxControl[3];
1179 result = ((control & SET_RTS) ? TIOCM_RTS : 0) |
1180 ((control & SET_DTR) ? TIOCM_DTR : 0) |
1181 ((ChanStatus & CD_ACT) ? TIOCM_CAR : 0) |
1182 (sGetChanRI(&info->channel) ? TIOCM_RNG : 0) |
1183 ((ChanStatus & DSR_ACT) ? TIOCM_DSR : 0) |
1184 ((ChanStatus & CTS_ACT) ? TIOCM_CTS : 0);
1190 * Sets the modem control lines
1192 static int rp_tiocmset(struct tty_struct *tty, struct file *file,
1193 unsigned int set, unsigned int clear)
1195 struct r_port *info = tty->driver_data;
1197 if (set & TIOCM_RTS)
1198 info->channel.TxControl[3] |= SET_RTS;
1199 if (set & TIOCM_DTR)
1200 info->channel.TxControl[3] |= SET_DTR;
1201 if (clear & TIOCM_RTS)
1202 info->channel.TxControl[3] &= ~SET_RTS;
1203 if (clear & TIOCM_DTR)
1204 info->channel.TxControl[3] &= ~SET_DTR;
1206 out32(info->channel.IndexAddr, info->channel.TxControl);
1210 static int get_config(struct r_port *info, struct rocket_config __user *retinfo)
1212 struct rocket_config tmp;
1216 memset(&tmp, 0, sizeof (tmp));
1217 mutex_lock(&info->port.mutex);
1218 tmp.line = info->line;
1219 tmp.flags = info->flags;
1220 tmp.close_delay = info->port.close_delay;
1221 tmp.closing_wait = info->port.closing_wait;
1222 tmp.port = rcktpt_io_addr[(info->line >> 5) & 3];
1223 mutex_unlock(&info->port.mutex);
1225 if (copy_to_user(retinfo, &tmp, sizeof (*retinfo)))
1230 static int set_config(struct tty_struct *tty, struct r_port *info,
1231 struct rocket_config __user *new_info)
1233 struct rocket_config new_serial;
1235 if (copy_from_user(&new_serial, new_info, sizeof (new_serial)))
1238 mutex_lock(&info->port.mutex);
1239 if (!capable(CAP_SYS_ADMIN))
1241 if ((new_serial.flags & ~ROCKET_USR_MASK) != (info->flags & ~ROCKET_USR_MASK)) {
1242 mutex_unlock(&info->port.mutex);
1245 info->flags = ((info->flags & ~ROCKET_USR_MASK) | (new_serial.flags & ROCKET_USR_MASK));
1246 configure_r_port(tty, info, NULL);
1250 info->flags = ((info->flags & ~ROCKET_FLAGS) | (new_serial.flags & ROCKET_FLAGS));
1251 info->port.close_delay = new_serial.close_delay;
1252 info->port.closing_wait = new_serial.closing_wait;
1254 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_HI)
1255 tty->alt_speed = 57600;
1256 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_VHI)
1257 tty->alt_speed = 115200;
1258 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_SHI)
1259 tty->alt_speed = 230400;
1260 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_WARP)
1261 tty->alt_speed = 460800;
1262 mutex_unlock(&info->port.mutex);
1264 configure_r_port(tty, info, NULL);
1269 * This function fills in a rocket_ports struct with information
1270 * about what boards/ports are in the system. This info is passed
1271 * to user space. See setrocket.c where the info is used to create
1272 * the /dev/ttyRx ports.
1274 static int get_ports(struct r_port *info, struct rocket_ports __user *retports)
1276 struct rocket_ports tmp;
1281 memset(&tmp, 0, sizeof (tmp));
1282 tmp.tty_major = rocket_driver->major;
1284 for (board = 0; board < 4; board++) {
1285 tmp.rocketModel[board].model = rocketModel[board].model;
1286 strcpy(tmp.rocketModel[board].modelString, rocketModel[board].modelString);
1287 tmp.rocketModel[board].numPorts = rocketModel[board].numPorts;
1288 tmp.rocketModel[board].loadrm2 = rocketModel[board].loadrm2;
1289 tmp.rocketModel[board].startingPortNumber = rocketModel[board].startingPortNumber;
1291 if (copy_to_user(retports, &tmp, sizeof (*retports)))
1296 static int reset_rm2(struct r_port *info, void __user *arg)
1300 if (!capable(CAP_SYS_ADMIN))
1303 if (copy_from_user(&reset, arg, sizeof (int)))
1308 if (rcktpt_type[info->board] != ROCKET_TYPE_MODEMII &&
1309 rcktpt_type[info->board] != ROCKET_TYPE_MODEMIII)
1312 if (info->ctlp->BusType == isISA)
1313 sModemReset(info->ctlp, info->chan, reset);
1315 sPCIModemReset(info->ctlp, info->chan, reset);
1320 static int get_version(struct r_port *info, struct rocket_version __user *retvers)
1322 if (copy_to_user(retvers, &driver_version, sizeof (*retvers)))
1327 /* IOCTL call handler into the driver */
1328 static int rp_ioctl(struct tty_struct *tty, struct file *file,
1329 unsigned int cmd, unsigned long arg)
1331 struct r_port *info = tty->driver_data;
1332 void __user *argp = (void __user *)arg;
1335 if (cmd != RCKP_GET_PORTS && rocket_paranoia_check(info, "rp_ioctl"))
1339 case RCKP_GET_STRUCT:
1340 if (copy_to_user(argp, info, sizeof (struct r_port)))
1343 case RCKP_GET_CONFIG:
1344 ret = get_config(info, argp);
1346 case RCKP_SET_CONFIG:
1347 ret = set_config(tty, info, argp);
1349 case RCKP_GET_PORTS:
1350 ret = get_ports(info, argp);
1352 case RCKP_RESET_RM2:
1353 ret = reset_rm2(info, argp);
1355 case RCKP_GET_VERSION:
1356 ret = get_version(info, argp);
1364 static void rp_send_xchar(struct tty_struct *tty, char ch)
1366 struct r_port *info = tty->driver_data;
1369 if (rocket_paranoia_check(info, "rp_send_xchar"))
1372 cp = &info->channel;
1374 sWriteTxPrioByte(cp, ch);
1376 sWriteTxByte(sGetTxRxDataIO(cp), ch);
1379 static void rp_throttle(struct tty_struct *tty)
1381 struct r_port *info = tty->driver_data;
1384 #ifdef ROCKET_DEBUG_THROTTLE
1385 printk(KERN_INFO "throttle %s: %d....\n", tty->name,
1386 tty->ldisc.chars_in_buffer(tty));
1389 if (rocket_paranoia_check(info, "rp_throttle"))
1392 cp = &info->channel;
1394 rp_send_xchar(tty, STOP_CHAR(tty));
1396 sClrRTS(&info->channel);
1399 static void rp_unthrottle(struct tty_struct *tty)
1401 struct r_port *info = tty->driver_data;
1403 #ifdef ROCKET_DEBUG_THROTTLE
1404 printk(KERN_INFO "unthrottle %s: %d....\n", tty->name,
1405 tty->ldisc.chars_in_buffer(tty));
1408 if (rocket_paranoia_check(info, "rp_throttle"))
1411 cp = &info->channel;
1413 rp_send_xchar(tty, START_CHAR(tty));
1415 sSetRTS(&info->channel);
1419 * ------------------------------------------------------------
1420 * rp_stop() and rp_start()
1422 * This routines are called before setting or resetting tty->stopped.
1423 * They enable or disable transmitter interrupts, as necessary.
1424 * ------------------------------------------------------------
1426 static void rp_stop(struct tty_struct *tty)
1428 struct r_port *info = tty->driver_data;
1430 #ifdef ROCKET_DEBUG_FLOW
1431 printk(KERN_INFO "stop %s: %d %d....\n", tty->name,
1432 info->xmit_cnt, info->xmit_fifo_room);
1435 if (rocket_paranoia_check(info, "rp_stop"))
1438 if (sGetTxCnt(&info->channel))
1439 sDisTransmit(&info->channel);
1442 static void rp_start(struct tty_struct *tty)
1444 struct r_port *info = tty->driver_data;
1446 #ifdef ROCKET_DEBUG_FLOW
1447 printk(KERN_INFO "start %s: %d %d....\n", tty->name,
1448 info->xmit_cnt, info->xmit_fifo_room);
1451 if (rocket_paranoia_check(info, "rp_stop"))
1454 sEnTransmit(&info->channel);
1455 set_bit((info->aiop * 8) + info->chan,
1456 (void *) &xmit_flags[info->board]);
1460 * rp_wait_until_sent() --- wait until the transmitter is empty
1462 static void rp_wait_until_sent(struct tty_struct *tty, int timeout)
1464 struct r_port *info = tty->driver_data;
1466 unsigned long orig_jiffies;
1467 int check_time, exit_time;
1470 if (rocket_paranoia_check(info, "rp_wait_until_sent"))
1473 cp = &info->channel;
1475 orig_jiffies = jiffies;
1476 #ifdef ROCKET_DEBUG_WAIT_UNTIL_SENT
1477 printk(KERN_INFO "In RP_wait_until_sent(%d) (jiff=%lu)...\n", timeout,
1479 printk(KERN_INFO "cps=%d...\n", info->cps);
1482 txcnt = sGetTxCnt(cp);
1484 if (sGetChanStatusLo(cp) & TXSHRMT)
1486 check_time = (HZ / info->cps) / 5;
1488 check_time = HZ * txcnt / info->cps;
1491 exit_time = orig_jiffies + timeout - jiffies;
1494 if (exit_time < check_time)
1495 check_time = exit_time;
1497 if (check_time == 0)
1499 #ifdef ROCKET_DEBUG_WAIT_UNTIL_SENT
1500 printk(KERN_INFO "txcnt = %d (jiff=%lu,check=%d)...\n", txcnt,
1501 jiffies, check_time);
1503 msleep_interruptible(jiffies_to_msecs(check_time));
1504 if (signal_pending(current))
1507 __set_current_state(TASK_RUNNING);
1508 #ifdef ROCKET_DEBUG_WAIT_UNTIL_SENT
1509 printk(KERN_INFO "txcnt = %d (jiff=%lu)...done\n", txcnt, jiffies);
1514 * rp_hangup() --- called by tty_hangup() when a hangup is signaled.
1516 static void rp_hangup(struct tty_struct *tty)
1519 struct r_port *info = tty->driver_data;
1520 unsigned long flags;
1522 if (rocket_paranoia_check(info, "rp_hangup"))
1525 #if (defined(ROCKET_DEBUG_OPEN) || defined(ROCKET_DEBUG_HANGUP))
1526 printk(KERN_INFO "rp_hangup of ttyR%d...\n", info->line);
1528 rp_flush_buffer(tty);
1529 spin_lock_irqsave(&info->port.lock, flags);
1530 if (info->port.flags & ASYNC_CLOSING) {
1531 spin_unlock_irqrestore(&info->port.lock, flags);
1534 if (info->port.count)
1535 atomic_dec(&rp_num_ports_open);
1536 clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
1537 spin_unlock_irqrestore(&info->port.lock, flags);
1539 tty_port_hangup(&info->port);
1541 cp = &info->channel;
1544 sDisInterrupts(cp, (TXINT_EN | MCINT_EN | RXINT_EN | SRCINT_EN | CHANINT_EN));
1546 sDisTxSoftFlowCtl(cp);
1548 clear_bit(ASYNCB_INITIALIZED, &info->port.flags);
1550 wake_up_interruptible(&info->port.open_wait);
1554 * Exception handler - write char routine. The RocketPort driver uses a
1555 * double-buffering strategy, with the twist that if the in-memory CPU
1556 * buffer is empty, and there's space in the transmit FIFO, the
1557 * writing routines will write directly to transmit FIFO.
1558 * Write buffer and counters protected by spinlocks
1560 static int rp_put_char(struct tty_struct *tty, unsigned char ch)
1562 struct r_port *info = tty->driver_data;
1564 unsigned long flags;
1566 if (rocket_paranoia_check(info, "rp_put_char"))
1570 * Grab the port write mutex, locking out other processes that try to
1571 * write to this port
1573 mutex_lock(&info->write_mtx);
1575 #ifdef ROCKET_DEBUG_WRITE
1576 printk(KERN_INFO "rp_put_char %c...\n", ch);
1579 spin_lock_irqsave(&info->slock, flags);
1580 cp = &info->channel;
1582 if (!tty->stopped && !tty->hw_stopped && info->xmit_fifo_room == 0)
1583 info->xmit_fifo_room = TXFIFO_SIZE - sGetTxCnt(cp);
1585 if (tty->stopped || tty->hw_stopped || info->xmit_fifo_room == 0 || info->xmit_cnt != 0) {
1586 info->xmit_buf[info->xmit_head++] = ch;
1587 info->xmit_head &= XMIT_BUF_SIZE - 1;
1589 set_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
1591 sOutB(sGetTxRxDataIO(cp), ch);
1592 info->xmit_fifo_room--;
1594 spin_unlock_irqrestore(&info->slock, flags);
1595 mutex_unlock(&info->write_mtx);
1600 * Exception handler - write routine, called when user app writes to the device.
1601 * A per port write mutex is used to protect from another process writing to
1602 * this port at the same time. This other process could be running on the other CPU
1603 * or get control of the CPU if the copy_from_user() blocks due to a page fault (swapped out).
1604 * Spinlocks protect the info xmit members.
1606 static int rp_write(struct tty_struct *tty,
1607 const unsigned char *buf, int count)
1609 struct r_port *info = tty->driver_data;
1611 const unsigned char *b;
1613 unsigned long flags;
1615 if (count <= 0 || rocket_paranoia_check(info, "rp_write"))
1618 if (mutex_lock_interruptible(&info->write_mtx))
1619 return -ERESTARTSYS;
1621 #ifdef ROCKET_DEBUG_WRITE
1622 printk(KERN_INFO "rp_write %d chars...\n", count);
1624 cp = &info->channel;
1626 if (!tty->stopped && !tty->hw_stopped && info->xmit_fifo_room < count)
1627 info->xmit_fifo_room = TXFIFO_SIZE - sGetTxCnt(cp);
1630 * If the write queue for the port is empty, and there is FIFO space, stuff bytes
1631 * into FIFO. Use the write queue for temp storage.
1633 if (!tty->stopped && !tty->hw_stopped && info->xmit_cnt == 0 && info->xmit_fifo_room > 0) {
1634 c = min(count, info->xmit_fifo_room);
1637 /* Push data into FIFO, 2 bytes at a time */
1638 sOutStrW(sGetTxRxDataIO(cp), (unsigned short *) b, c / 2);
1640 /* If there is a byte remaining, write it */
1642 sOutB(sGetTxRxDataIO(cp), b[c - 1]);
1648 spin_lock_irqsave(&info->slock, flags);
1649 info->xmit_fifo_room -= c;
1650 spin_unlock_irqrestore(&info->slock, flags);
1653 /* If count is zero, we wrote it all and are done */
1657 /* Write remaining data into the port's xmit_buf */
1660 if (!test_bit(ASYNCB_NORMAL_ACTIVE, &info->port.flags))
1662 c = min(count, XMIT_BUF_SIZE - info->xmit_cnt - 1);
1663 c = min(c, XMIT_BUF_SIZE - info->xmit_head);
1668 memcpy(info->xmit_buf + info->xmit_head, b, c);
1670 spin_lock_irqsave(&info->slock, flags);
1672 (info->xmit_head + c) & (XMIT_BUF_SIZE - 1);
1673 info->xmit_cnt += c;
1674 spin_unlock_irqrestore(&info->slock, flags);
1681 if ((retval > 0) && !tty->stopped && !tty->hw_stopped)
1682 set_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
1685 if (info->xmit_cnt < WAKEUP_CHARS) {
1687 #ifdef ROCKETPORT_HAVE_POLL_WAIT
1688 wake_up_interruptible(&tty->poll_wait);
1691 mutex_unlock(&info->write_mtx);
1696 * Return the number of characters that can be sent. We estimate
1697 * only using the in-memory transmit buffer only, and ignore the
1698 * potential space in the transmit FIFO.
1700 static int rp_write_room(struct tty_struct *tty)
1702 struct r_port *info = tty->driver_data;
1705 if (rocket_paranoia_check(info, "rp_write_room"))
1708 ret = XMIT_BUF_SIZE - info->xmit_cnt - 1;
1711 #ifdef ROCKET_DEBUG_WRITE
1712 printk(KERN_INFO "rp_write_room returns %d...\n", ret);
1718 * Return the number of characters in the buffer. Again, this only
1719 * counts those characters in the in-memory transmit buffer.
1721 static int rp_chars_in_buffer(struct tty_struct *tty)
1723 struct r_port *info = tty->driver_data;
1726 if (rocket_paranoia_check(info, "rp_chars_in_buffer"))
1729 cp = &info->channel;
1731 #ifdef ROCKET_DEBUG_WRITE
1732 printk(KERN_INFO "rp_chars_in_buffer returns %d...\n", info->xmit_cnt);
1734 return info->xmit_cnt;
1738 * Flushes the TX fifo for a port, deletes data in the xmit_buf stored in the
1739 * r_port struct for the port. Note that spinlock are used to protect info members,
1740 * do not call this function if the spinlock is already held.
1742 static void rp_flush_buffer(struct tty_struct *tty)
1744 struct r_port *info = tty->driver_data;
1746 unsigned long flags;
1748 if (rocket_paranoia_check(info, "rp_flush_buffer"))
1751 spin_lock_irqsave(&info->slock, flags);
1752 info->xmit_cnt = info->xmit_head = info->xmit_tail = 0;
1753 spin_unlock_irqrestore(&info->slock, flags);
1755 #ifdef ROCKETPORT_HAVE_POLL_WAIT
1756 wake_up_interruptible(&tty->poll_wait);
1760 cp = &info->channel;
1766 static struct pci_device_id __devinitdata rocket_pci_ids[] = {
1767 { PCI_DEVICE(PCI_VENDOR_ID_RP, PCI_ANY_ID) },
1770 MODULE_DEVICE_TABLE(pci, rocket_pci_ids);
1773 * Called when a PCI card is found. Retrieves and stores model information,
1774 * init's aiopic and serial port hardware.
1775 * Inputs: i is the board number (0-n)
1777 static __init int register_PCI(int i, struct pci_dev *dev)
1779 int num_aiops, aiop, max_num_aiops, num_chan, chan;
1780 unsigned int aiopio[MAX_AIOPS_PER_BOARD];
1781 char *str, *board_type;
1785 int altChanRingIndicator = 0;
1786 int ports_per_aiop = 8;
1787 WordIO_t ConfigIO = 0;
1788 ByteIO_t UPCIRingInd = 0;
1790 if (!dev || pci_enable_device(dev))
1793 rcktpt_io_addr[i] = pci_resource_start(dev, 0);
1795 rcktpt_type[i] = ROCKET_TYPE_NORMAL;
1796 rocketModel[i].loadrm2 = 0;
1797 rocketModel[i].startingPortNumber = nextLineNumber;
1799 /* Depending on the model, set up some config variables */
1800 switch (dev->device) {
1801 case PCI_DEVICE_ID_RP4QUAD:
1805 rocketModel[i].model = MODEL_RP4QUAD;
1806 strcpy(rocketModel[i].modelString, "RocketPort 4 port w/quad cable");
1807 rocketModel[i].numPorts = 4;
1809 case PCI_DEVICE_ID_RP8OCTA:
1812 rocketModel[i].model = MODEL_RP8OCTA;
1813 strcpy(rocketModel[i].modelString, "RocketPort 8 port w/octa cable");
1814 rocketModel[i].numPorts = 8;
1816 case PCI_DEVICE_ID_URP8OCTA:
1819 rocketModel[i].model = MODEL_UPCI_RP8OCTA;
1820 strcpy(rocketModel[i].modelString, "RocketPort UPCI 8 port w/octa cable");
1821 rocketModel[i].numPorts = 8;
1823 case PCI_DEVICE_ID_RP8INTF:
1826 rocketModel[i].model = MODEL_RP8INTF;
1827 strcpy(rocketModel[i].modelString, "RocketPort 8 port w/external I/F");
1828 rocketModel[i].numPorts = 8;
1830 case PCI_DEVICE_ID_URP8INTF:
1833 rocketModel[i].model = MODEL_UPCI_RP8INTF;
1834 strcpy(rocketModel[i].modelString, "RocketPort UPCI 8 port w/external I/F");
1835 rocketModel[i].numPorts = 8;
1837 case PCI_DEVICE_ID_RP8J:
1840 rocketModel[i].model = MODEL_RP8J;
1841 strcpy(rocketModel[i].modelString, "RocketPort 8 port w/RJ11 connectors");
1842 rocketModel[i].numPorts = 8;
1844 case PCI_DEVICE_ID_RP4J:
1848 rocketModel[i].model = MODEL_RP4J;
1849 strcpy(rocketModel[i].modelString, "RocketPort 4 port w/RJ45 connectors");
1850 rocketModel[i].numPorts = 4;
1852 case PCI_DEVICE_ID_RP8SNI:
1853 str = "8 (DB78 Custom)";
1855 rocketModel[i].model = MODEL_RP8SNI;
1856 strcpy(rocketModel[i].modelString, "RocketPort 8 port w/ custom DB78");
1857 rocketModel[i].numPorts = 8;
1859 case PCI_DEVICE_ID_RP16SNI:
1860 str = "16 (DB78 Custom)";
1862 rocketModel[i].model = MODEL_RP16SNI;
1863 strcpy(rocketModel[i].modelString, "RocketPort 16 port w/ custom DB78");
1864 rocketModel[i].numPorts = 16;
1866 case PCI_DEVICE_ID_RP16INTF:
1869 rocketModel[i].model = MODEL_RP16INTF;
1870 strcpy(rocketModel[i].modelString, "RocketPort 16 port w/external I/F");
1871 rocketModel[i].numPorts = 16;
1873 case PCI_DEVICE_ID_URP16INTF:
1876 rocketModel[i].model = MODEL_UPCI_RP16INTF;
1877 strcpy(rocketModel[i].modelString, "RocketPort UPCI 16 port w/external I/F");
1878 rocketModel[i].numPorts = 16;
1880 case PCI_DEVICE_ID_CRP16INTF:
1883 rocketModel[i].model = MODEL_CPCI_RP16INTF;
1884 strcpy(rocketModel[i].modelString, "RocketPort Compact PCI 16 port w/external I/F");
1885 rocketModel[i].numPorts = 16;
1887 case PCI_DEVICE_ID_RP32INTF:
1890 rocketModel[i].model = MODEL_RP32INTF;
1891 strcpy(rocketModel[i].modelString, "RocketPort 32 port w/external I/F");
1892 rocketModel[i].numPorts = 32;
1894 case PCI_DEVICE_ID_URP32INTF:
1897 rocketModel[i].model = MODEL_UPCI_RP32INTF;
1898 strcpy(rocketModel[i].modelString, "RocketPort UPCI 32 port w/external I/F");
1899 rocketModel[i].numPorts = 32;
1901 case PCI_DEVICE_ID_RPP4:
1902 str = "Plus Quadcable";
1905 altChanRingIndicator++;
1907 rocketModel[i].model = MODEL_RPP4;
1908 strcpy(rocketModel[i].modelString, "RocketPort Plus 4 port");
1909 rocketModel[i].numPorts = 4;
1911 case PCI_DEVICE_ID_RPP8:
1912 str = "Plus Octacable";
1915 altChanRingIndicator++;
1917 rocketModel[i].model = MODEL_RPP8;
1918 strcpy(rocketModel[i].modelString, "RocketPort Plus 8 port");
1919 rocketModel[i].numPorts = 8;
1921 case PCI_DEVICE_ID_RP2_232:
1922 str = "Plus 2 (RS-232)";
1925 altChanRingIndicator++;
1927 rocketModel[i].model = MODEL_RP2_232;
1928 strcpy(rocketModel[i].modelString, "RocketPort Plus 2 port RS232");
1929 rocketModel[i].numPorts = 2;
1931 case PCI_DEVICE_ID_RP2_422:
1932 str = "Plus 2 (RS-422)";
1935 altChanRingIndicator++;
1937 rocketModel[i].model = MODEL_RP2_422;
1938 strcpy(rocketModel[i].modelString, "RocketPort Plus 2 port RS422");
1939 rocketModel[i].numPorts = 2;
1941 case PCI_DEVICE_ID_RP6M:
1947 /* If revision is 1, the rocketmodem flash must be loaded.
1948 * If it is 2 it is a "socketed" version. */
1949 if (dev->revision == 1) {
1950 rcktpt_type[i] = ROCKET_TYPE_MODEMII;
1951 rocketModel[i].loadrm2 = 1;
1953 rcktpt_type[i] = ROCKET_TYPE_MODEM;
1956 rocketModel[i].model = MODEL_RP6M;
1957 strcpy(rocketModel[i].modelString, "RocketModem 6 port");
1958 rocketModel[i].numPorts = 6;
1960 case PCI_DEVICE_ID_RP4M:
1964 if (dev->revision == 1) {
1965 rcktpt_type[i] = ROCKET_TYPE_MODEMII;
1966 rocketModel[i].loadrm2 = 1;
1968 rcktpt_type[i] = ROCKET_TYPE_MODEM;
1971 rocketModel[i].model = MODEL_RP4M;
1972 strcpy(rocketModel[i].modelString, "RocketModem 4 port");
1973 rocketModel[i].numPorts = 4;
1976 str = "(unknown/unsupported)";
1982 * Check for UPCI boards.
1985 switch (dev->device) {
1986 case PCI_DEVICE_ID_URP32INTF:
1987 case PCI_DEVICE_ID_URP8INTF:
1988 case PCI_DEVICE_ID_URP16INTF:
1989 case PCI_DEVICE_ID_CRP16INTF:
1990 case PCI_DEVICE_ID_URP8OCTA:
1991 rcktpt_io_addr[i] = pci_resource_start(dev, 2);
1992 ConfigIO = pci_resource_start(dev, 1);
1993 if (dev->device == PCI_DEVICE_ID_URP8OCTA) {
1994 UPCIRingInd = rcktpt_io_addr[i] + _PCI_9030_RING_IND;
1997 * Check for octa or quad cable.
2000 (sInW(ConfigIO + _PCI_9030_GPIO_CTRL) &
2001 PCI_GPIO_CTRL_8PORT)) {
2004 rocketModel[i].numPorts = 4;
2008 case PCI_DEVICE_ID_UPCI_RM3_8PORT:
2011 rocketModel[i].model = MODEL_UPCI_RM3_8PORT;
2012 strcpy(rocketModel[i].modelString, "RocketModem III 8 port");
2013 rocketModel[i].numPorts = 8;
2014 rcktpt_io_addr[i] = pci_resource_start(dev, 2);
2015 UPCIRingInd = rcktpt_io_addr[i] + _PCI_9030_RING_IND;
2016 ConfigIO = pci_resource_start(dev, 1);
2017 rcktpt_type[i] = ROCKET_TYPE_MODEMIII;
2019 case PCI_DEVICE_ID_UPCI_RM3_4PORT:
2022 rocketModel[i].model = MODEL_UPCI_RM3_4PORT;
2023 strcpy(rocketModel[i].modelString, "RocketModem III 4 port");
2024 rocketModel[i].numPorts = 4;
2025 rcktpt_io_addr[i] = pci_resource_start(dev, 2);
2026 UPCIRingInd = rcktpt_io_addr[i] + _PCI_9030_RING_IND;
2027 ConfigIO = pci_resource_start(dev, 1);
2028 rcktpt_type[i] = ROCKET_TYPE_MODEMIII;
2034 switch (rcktpt_type[i]) {
2035 case ROCKET_TYPE_MODEM:
2036 board_type = "RocketModem";
2038 case ROCKET_TYPE_MODEMII:
2039 board_type = "RocketModem II";
2041 case ROCKET_TYPE_MODEMIII:
2042 board_type = "RocketModem III";
2045 board_type = "RocketPort";
2050 sClockPrescale = 0x12; /* mod 2 (divide by 3) */
2051 rp_baud_base[i] = 921600;
2054 * If support_low_speed is set, use the slow clock
2055 * prescale, which supports 50 bps
2057 if (support_low_speed) {
2058 /* mod 9 (divide by 10) prescale */
2059 sClockPrescale = 0x19;
2060 rp_baud_base[i] = 230400;
2062 /* mod 4 (devide by 5) prescale */
2063 sClockPrescale = 0x14;
2064 rp_baud_base[i] = 460800;
2068 for (aiop = 0; aiop < max_num_aiops; aiop++)
2069 aiopio[aiop] = rcktpt_io_addr[i] + (aiop * 0x40);
2070 ctlp = sCtlNumToCtlPtr(i);
2071 num_aiops = sPCIInitController(ctlp, i, aiopio, max_num_aiops, ConfigIO, 0, FREQ_DIS, 0, altChanRingIndicator, UPCIRingInd);
2072 for (aiop = 0; aiop < max_num_aiops; aiop++)
2073 ctlp->AiopNumChan[aiop] = ports_per_aiop;
2075 dev_info(&dev->dev, "comtrol PCI controller #%d found at "
2076 "address %04lx, %d AIOP(s) (%s), creating ttyR%d - %ld\n",
2077 i, rcktpt_io_addr[i], num_aiops, rocketModel[i].modelString,
2078 rocketModel[i].startingPortNumber,
2079 rocketModel[i].startingPortNumber + rocketModel[i].numPorts-1);
2081 if (num_aiops <= 0) {
2082 rcktpt_io_addr[i] = 0;
2087 /* Reset the AIOPIC, init the serial ports */
2088 for (aiop = 0; aiop < num_aiops; aiop++) {
2089 sResetAiopByNum(ctlp, aiop);
2090 num_chan = ports_per_aiop;
2091 for (chan = 0; chan < num_chan; chan++)
2092 init_r_port(i, aiop, chan, dev);
2095 /* Rocket modems must be reset */
2096 if ((rcktpt_type[i] == ROCKET_TYPE_MODEM) ||
2097 (rcktpt_type[i] == ROCKET_TYPE_MODEMII) ||
2098 (rcktpt_type[i] == ROCKET_TYPE_MODEMIII)) {
2099 num_chan = ports_per_aiop;
2100 for (chan = 0; chan < num_chan; chan++)
2101 sPCIModemReset(ctlp, chan, 1);
2103 for (chan = 0; chan < num_chan; chan++)
2104 sPCIModemReset(ctlp, chan, 0);
2106 rmSpeakerReset(ctlp, rocketModel[i].model);
2112 * Probes for PCI cards, inits them if found
2113 * Input: board_found = number of ISA boards already found, or the
2114 * starting board number
2115 * Returns: Number of PCI boards found
2117 static int __init init_PCI(int boards_found)
2119 struct pci_dev *dev = NULL;
2122 /* Work through the PCI device list, pulling out ours */
2123 while ((dev = pci_get_device(PCI_VENDOR_ID_RP, PCI_ANY_ID, dev))) {
2124 if (register_PCI(count + boards_found, dev))
2130 #endif /* CONFIG_PCI */
2133 * Probes for ISA cards
2134 * Input: i = the board number to look for
2135 * Returns: 1 if board found, 0 else
2137 static int __init init_ISA(int i)
2139 int num_aiops, num_chan = 0, total_num_chan = 0;
2141 unsigned int aiopio[MAX_AIOPS_PER_BOARD];
2145 /* If io_addr is zero, no board configured */
2146 if (rcktpt_io_addr[i] == 0)
2149 /* Reserve the IO region */
2150 if (!request_region(rcktpt_io_addr[i], 64, "Comtrol RocketPort")) {
2151 printk(KERN_ERR "Unable to reserve IO region for configured "
2152 "ISA RocketPort at address 0x%lx, board not "
2153 "installed...\n", rcktpt_io_addr[i]);
2154 rcktpt_io_addr[i] = 0;
2158 ctlp = sCtlNumToCtlPtr(i);
2160 ctlp->boardType = rcktpt_type[i];
2162 switch (rcktpt_type[i]) {
2163 case ROCKET_TYPE_PC104:
2164 type_string = "(PC104)";
2166 case ROCKET_TYPE_MODEM:
2167 type_string = "(RocketModem)";
2169 case ROCKET_TYPE_MODEMII:
2170 type_string = "(RocketModem II)";
2178 * If support_low_speed is set, use the slow clock prescale,
2179 * which supports 50 bps
2181 if (support_low_speed) {
2182 sClockPrescale = 0x19; /* mod 9 (divide by 10) prescale */
2183 rp_baud_base[i] = 230400;
2185 sClockPrescale = 0x14; /* mod 4 (devide by 5) prescale */
2186 rp_baud_base[i] = 460800;
2189 for (aiop = 0; aiop < MAX_AIOPS_PER_BOARD; aiop++)
2190 aiopio[aiop] = rcktpt_io_addr[i] + (aiop * 0x400);
2192 num_aiops = sInitController(ctlp, i, controller + (i * 0x400), aiopio, MAX_AIOPS_PER_BOARD, 0, FREQ_DIS, 0);
2194 if (ctlp->boardType == ROCKET_TYPE_PC104) {
2195 sEnAiop(ctlp, 2); /* only one AIOPIC, but these */
2196 sEnAiop(ctlp, 3); /* CSels used for other stuff */
2199 /* If something went wrong initing the AIOP's release the ISA IO memory */
2200 if (num_aiops <= 0) {
2201 release_region(rcktpt_io_addr[i], 64);
2202 rcktpt_io_addr[i] = 0;
2206 rocketModel[i].startingPortNumber = nextLineNumber;
2208 for (aiop = 0; aiop < num_aiops; aiop++) {
2209 sResetAiopByNum(ctlp, aiop);
2210 sEnAiop(ctlp, aiop);
2211 num_chan = sGetAiopNumChan(ctlp, aiop);
2212 total_num_chan += num_chan;
2213 for (chan = 0; chan < num_chan; chan++)
2214 init_r_port(i, aiop, chan, NULL);
2217 if ((rcktpt_type[i] == ROCKET_TYPE_MODEM) || (rcktpt_type[i] == ROCKET_TYPE_MODEMII)) {
2218 num_chan = sGetAiopNumChan(ctlp, 0);
2219 total_num_chan = num_chan;
2220 for (chan = 0; chan < num_chan; chan++)
2221 sModemReset(ctlp, chan, 1);
2223 for (chan = 0; chan < num_chan; chan++)
2224 sModemReset(ctlp, chan, 0);
2226 strcpy(rocketModel[i].modelString, "RocketModem ISA");
2228 strcpy(rocketModel[i].modelString, "RocketPort ISA");
2230 rocketModel[i].numPorts = total_num_chan;
2231 rocketModel[i].model = MODEL_ISA;
2233 printk(KERN_INFO "RocketPort ISA card #%d found at 0x%lx - %d AIOPs %s\n",
2234 i, rcktpt_io_addr[i], num_aiops, type_string);
2236 printk(KERN_INFO "Installing %s, creating /dev/ttyR%d - %ld\n",
2237 rocketModel[i].modelString,
2238 rocketModel[i].startingPortNumber,
2239 rocketModel[i].startingPortNumber +
2240 rocketModel[i].numPorts - 1);
2245 static const struct tty_operations rocket_ops = {
2249 .put_char = rp_put_char,
2250 .write_room = rp_write_room,
2251 .chars_in_buffer = rp_chars_in_buffer,
2252 .flush_buffer = rp_flush_buffer,
2254 .throttle = rp_throttle,
2255 .unthrottle = rp_unthrottle,
2256 .set_termios = rp_set_termios,
2259 .hangup = rp_hangup,
2260 .break_ctl = rp_break,
2261 .send_xchar = rp_send_xchar,
2262 .wait_until_sent = rp_wait_until_sent,
2263 .tiocmget = rp_tiocmget,
2264 .tiocmset = rp_tiocmset,
2267 static const struct tty_port_operations rocket_port_ops = {
2268 .carrier_raised = carrier_raised,
2273 * The module "startup" routine; it's run when the module is loaded.
2275 static int __init rp_init(void)
2277 int ret = -ENOMEM, pci_boards_found, isa_boards_found, i;
2279 printk(KERN_INFO "RocketPort device driver module, version %s, %s\n",
2280 ROCKET_VERSION, ROCKET_DATE);
2282 rocket_driver = alloc_tty_driver(MAX_RP_PORTS);
2287 * If board 1 is non-zero, there is at least one ISA configured. If controller is
2288 * zero, use the default controller IO address of board1 + 0x40.
2291 if (controller == 0)
2292 controller = board1 + 0x40;
2294 controller = 0; /* Used as a flag, meaning no ISA boards */
2297 /* If an ISA card is configured, reserve the 4 byte IO space for the Mudbac controller */
2298 if (controller && (!request_region(controller, 4, "Comtrol RocketPort"))) {
2299 printk(KERN_ERR "Unable to reserve IO region for first "
2300 "configured ISA RocketPort controller 0x%lx. "
2301 "Driver exiting\n", controller);
2306 /* Store ISA variable retrieved from command line or .conf file. */
2307 rcktpt_io_addr[0] = board1;
2308 rcktpt_io_addr[1] = board2;
2309 rcktpt_io_addr[2] = board3;
2310 rcktpt_io_addr[3] = board4;
2312 rcktpt_type[0] = modem1 ? ROCKET_TYPE_MODEM : ROCKET_TYPE_NORMAL;
2313 rcktpt_type[0] = pc104_1[0] ? ROCKET_TYPE_PC104 : rcktpt_type[0];
2314 rcktpt_type[1] = modem2 ? ROCKET_TYPE_MODEM : ROCKET_TYPE_NORMAL;
2315 rcktpt_type[1] = pc104_2[0] ? ROCKET_TYPE_PC104 : rcktpt_type[1];
2316 rcktpt_type[2] = modem3 ? ROCKET_TYPE_MODEM : ROCKET_TYPE_NORMAL;
2317 rcktpt_type[2] = pc104_3[0] ? ROCKET_TYPE_PC104 : rcktpt_type[2];
2318 rcktpt_type[3] = modem4 ? ROCKET_TYPE_MODEM : ROCKET_TYPE_NORMAL;
2319 rcktpt_type[3] = pc104_4[0] ? ROCKET_TYPE_PC104 : rcktpt_type[3];
2322 * Set up the tty driver structure and then register this
2323 * driver with the tty layer.
2326 rocket_driver->owner = THIS_MODULE;
2327 rocket_driver->flags = TTY_DRIVER_DYNAMIC_DEV;
2328 rocket_driver->name = "ttyR";
2329 rocket_driver->driver_name = "Comtrol RocketPort";
2330 rocket_driver->major = TTY_ROCKET_MAJOR;
2331 rocket_driver->minor_start = 0;
2332 rocket_driver->type = TTY_DRIVER_TYPE_SERIAL;
2333 rocket_driver->subtype = SERIAL_TYPE_NORMAL;
2334 rocket_driver->init_termios = tty_std_termios;
2335 rocket_driver->init_termios.c_cflag =
2336 B9600 | CS8 | CREAD | HUPCL | CLOCAL;
2337 rocket_driver->init_termios.c_ispeed = 9600;
2338 rocket_driver->init_termios.c_ospeed = 9600;
2339 #ifdef ROCKET_SOFT_FLOW
2340 rocket_driver->flags |= TTY_DRIVER_REAL_RAW;
2342 tty_set_operations(rocket_driver, &rocket_ops);
2344 ret = tty_register_driver(rocket_driver);
2346 printk(KERN_ERR "Couldn't install tty RocketPort driver\n");
2350 #ifdef ROCKET_DEBUG_OPEN
2351 printk(KERN_INFO "RocketPort driver is major %d\n", rocket_driver.major);
2355 * OK, let's probe each of the controllers looking for boards. Any boards found
2356 * will be initialized here.
2358 isa_boards_found = 0;
2359 pci_boards_found = 0;
2361 for (i = 0; i < NUM_BOARDS; i++) {
2367 if (isa_boards_found < NUM_BOARDS)
2368 pci_boards_found = init_PCI(isa_boards_found);
2371 max_board = pci_boards_found + isa_boards_found;
2373 if (max_board == 0) {
2374 printk(KERN_ERR "No rocketport ports found; unloading driver\n");
2381 tty_unregister_driver(rocket_driver);
2383 put_tty_driver(rocket_driver);
2389 static void rp_cleanup_module(void)
2394 del_timer_sync(&rocket_timer);
2396 retval = tty_unregister_driver(rocket_driver);
2398 printk(KERN_ERR "Error %d while trying to unregister "
2399 "rocketport driver\n", -retval);
2401 for (i = 0; i < MAX_RP_PORTS; i++)
2403 tty_unregister_device(rocket_driver, i);
2407 put_tty_driver(rocket_driver);
2409 for (i = 0; i < NUM_BOARDS; i++) {
2410 if (rcktpt_io_addr[i] <= 0 || is_PCI[i])
2412 release_region(rcktpt_io_addr[i], 64);
2415 release_region(controller, 4);
2418 /***************************************************************************
2419 Function: sInitController
2420 Purpose: Initialization of controller global registers and controller
2422 Call: sInitController(CtlP,CtlNum,MudbacIO,AiopIOList,AiopIOListSize,
2423 IRQNum,Frequency,PeriodicOnly)
2424 CONTROLLER_T *CtlP; Ptr to controller structure
2425 int CtlNum; Controller number
2426 ByteIO_t MudbacIO; Mudbac base I/O address.
2427 ByteIO_t *AiopIOList; List of I/O addresses for each AIOP.
2428 This list must be in the order the AIOPs will be found on the
2429 controller. Once an AIOP in the list is not found, it is
2430 assumed that there are no more AIOPs on the controller.
2431 int AiopIOListSize; Number of addresses in AiopIOList
2432 int IRQNum; Interrupt Request number. Can be any of the following:
2433 0: Disable global interrupts
2442 Byte_t Frequency: A flag identifying the frequency
2443 of the periodic interrupt, can be any one of the following:
2444 FREQ_DIS - periodic interrupt disabled
2445 FREQ_137HZ - 137 Hertz
2446 FREQ_69HZ - 69 Hertz
2447 FREQ_34HZ - 34 Hertz
2448 FREQ_17HZ - 17 Hertz
2451 If IRQNum is set to 0 the Frequency parameter is
2452 overidden, it is forced to a value of FREQ_DIS.
2453 int PeriodicOnly: 1 if all interrupts except the periodic
2454 interrupt are to be blocked.
2455 0 is both the periodic interrupt and
2456 other channel interrupts are allowed.
2457 If IRQNum is set to 0 the PeriodicOnly parameter is
2458 overidden, it is forced to a value of 0.
2459 Return: int: Number of AIOPs on the controller, or CTLID_NULL if controller
2460 initialization failed.
2463 If periodic interrupts are to be disabled but AIOP interrupts
2464 are allowed, set Frequency to FREQ_DIS and PeriodicOnly to 0.
2466 If interrupts are to be completely disabled set IRQNum to 0.
2468 Setting Frequency to FREQ_DIS and PeriodicOnly to 1 is an
2469 invalid combination.
2471 This function performs initialization of global interrupt modes,
2472 but it does not actually enable global interrupts. To enable
2473 and disable global interrupts use functions sEnGlobalInt() and
2474 sDisGlobalInt(). Enabling of global interrupts is normally not
2475 done until all other initializations are complete.
2477 Even if interrupts are globally enabled, they must also be
2478 individually enabled for each channel that is to generate
2481 Warnings: No range checking on any of the parameters is done.
2483 No context switches are allowed while executing this function.
2485 After this function all AIOPs on the controller are disabled,
2486 they can be enabled with sEnAiop().
2488 static int sInitController(CONTROLLER_T * CtlP, int CtlNum, ByteIO_t MudbacIO,
2489 ByteIO_t * AiopIOList, int AiopIOListSize,
2490 int IRQNum, Byte_t Frequency, int PeriodicOnly)
2496 CtlP->AiopIntrBits = aiop_intr_bits;
2497 CtlP->AltChanRingIndicator = 0;
2498 CtlP->CtlNum = CtlNum;
2499 CtlP->CtlID = CTLID_0001; /* controller release 1 */
2500 CtlP->BusType = isISA;
2501 CtlP->MBaseIO = MudbacIO;
2502 CtlP->MReg1IO = MudbacIO + 1;
2503 CtlP->MReg2IO = MudbacIO + 2;
2504 CtlP->MReg3IO = MudbacIO + 3;
2506 CtlP->MReg2 = 0; /* interrupt disable */
2507 CtlP->MReg3 = 0; /* no periodic interrupts */
2509 if (sIRQMap[IRQNum] == 0) { /* interrupts globally disabled */
2510 CtlP->MReg2 = 0; /* interrupt disable */
2511 CtlP->MReg3 = 0; /* no periodic interrupts */
2513 CtlP->MReg2 = sIRQMap[IRQNum]; /* set IRQ number */
2514 CtlP->MReg3 = Frequency; /* set frequency */
2515 if (PeriodicOnly) { /* periodic interrupt only */
2516 CtlP->MReg3 |= PERIODIC_ONLY;
2520 sOutB(CtlP->MReg2IO, CtlP->MReg2);
2521 sOutB(CtlP->MReg3IO, CtlP->MReg3);
2522 sControllerEOI(CtlP); /* clear EOI if warm init */
2525 for (i = done = 0; i < AiopIOListSize; i++) {
2527 CtlP->AiopIO[i] = (WordIO_t) io;
2528 CtlP->AiopIntChanIO[i] = io + _INT_CHAN;
2529 sOutB(CtlP->MReg2IO, CtlP->MReg2 | (i & 0x03)); /* AIOP index */
2530 sOutB(MudbacIO, (Byte_t) (io >> 6)); /* set up AIOP I/O in MUDBAC */
2533 sEnAiop(CtlP, i); /* enable the AIOP */
2534 CtlP->AiopID[i] = sReadAiopID(io); /* read AIOP ID */
2535 if (CtlP->AiopID[i] == AIOPID_NULL) /* if AIOP does not exist */
2536 done = 1; /* done looking for AIOPs */
2538 CtlP->AiopNumChan[i] = sReadAiopNumChan((WordIO_t) io); /* num channels in AIOP */
2539 sOutW((WordIO_t) io + _INDX_ADDR, _CLK_PRE); /* clock prescaler */
2540 sOutB(io + _INDX_DATA, sClockPrescale);
2541 CtlP->NumAiop++; /* bump count of AIOPs */
2543 sDisAiop(CtlP, i); /* disable AIOP */
2546 if (CtlP->NumAiop == 0)
2549 return (CtlP->NumAiop);
2552 /***************************************************************************
2553 Function: sPCIInitController
2554 Purpose: Initialization of controller global registers and controller
2556 Call: sPCIInitController(CtlP,CtlNum,AiopIOList,AiopIOListSize,
2557 IRQNum,Frequency,PeriodicOnly)
2558 CONTROLLER_T *CtlP; Ptr to controller structure
2559 int CtlNum; Controller number
2560 ByteIO_t *AiopIOList; List of I/O addresses for each AIOP.
2561 This list must be in the order the AIOPs will be found on the
2562 controller. Once an AIOP in the list is not found, it is
2563 assumed that there are no more AIOPs on the controller.
2564 int AiopIOListSize; Number of addresses in AiopIOList
2565 int IRQNum; Interrupt Request number. Can be any of the following:
2566 0: Disable global interrupts
2575 Byte_t Frequency: A flag identifying the frequency
2576 of the periodic interrupt, can be any one of the following:
2577 FREQ_DIS - periodic interrupt disabled
2578 FREQ_137HZ - 137 Hertz
2579 FREQ_69HZ - 69 Hertz
2580 FREQ_34HZ - 34 Hertz
2581 FREQ_17HZ - 17 Hertz
2584 If IRQNum is set to 0 the Frequency parameter is
2585 overidden, it is forced to a value of FREQ_DIS.
2586 int PeriodicOnly: 1 if all interrupts except the periodic
2587 interrupt are to be blocked.
2588 0 is both the periodic interrupt and
2589 other channel interrupts are allowed.
2590 If IRQNum is set to 0 the PeriodicOnly parameter is
2591 overidden, it is forced to a value of 0.
2592 Return: int: Number of AIOPs on the controller, or CTLID_NULL if controller
2593 initialization failed.
2596 If periodic interrupts are to be disabled but AIOP interrupts
2597 are allowed, set Frequency to FREQ_DIS and PeriodicOnly to 0.
2599 If interrupts are to be completely disabled set IRQNum to 0.
2601 Setting Frequency to FREQ_DIS and PeriodicOnly to 1 is an
2602 invalid combination.
2604 This function performs initialization of global interrupt modes,
2605 but it does not actually enable global interrupts. To enable
2606 and disable global interrupts use functions sEnGlobalInt() and
2607 sDisGlobalInt(). Enabling of global interrupts is normally not
2608 done until all other initializations are complete.
2610 Even if interrupts are globally enabled, they must also be
2611 individually enabled for each channel that is to generate
2614 Warnings: No range checking on any of the parameters is done.
2616 No context switches are allowed while executing this function.
2618 After this function all AIOPs on the controller are disabled,
2619 they can be enabled with sEnAiop().
2621 static int sPCIInitController(CONTROLLER_T * CtlP, int CtlNum,
2622 ByteIO_t * AiopIOList, int AiopIOListSize,
2623 WordIO_t ConfigIO, int IRQNum, Byte_t Frequency,
2624 int PeriodicOnly, int altChanRingIndicator,
2630 CtlP->AltChanRingIndicator = altChanRingIndicator;
2631 CtlP->UPCIRingInd = UPCIRingInd;
2632 CtlP->CtlNum = CtlNum;
2633 CtlP->CtlID = CTLID_0001; /* controller release 1 */
2634 CtlP->BusType = isPCI; /* controller release 1 */
2638 CtlP->PCIIO = ConfigIO + _PCI_9030_INT_CTRL;
2639 CtlP->PCIIO2 = ConfigIO + _PCI_9030_GPIO_CTRL;
2640 CtlP->AiopIntrBits = upci_aiop_intr_bits;
2644 (WordIO_t) ((ByteIO_t) AiopIOList[0] + _PCI_INT_FUNC);
2645 CtlP->AiopIntrBits = aiop_intr_bits;
2648 sPCIControllerEOI(CtlP); /* clear EOI if warm init */
2651 for (i = 0; i < AiopIOListSize; i++) {
2653 CtlP->AiopIO[i] = (WordIO_t) io;
2654 CtlP->AiopIntChanIO[i] = io + _INT_CHAN;
2656 CtlP->AiopID[i] = sReadAiopID(io); /* read AIOP ID */
2657 if (CtlP->AiopID[i] == AIOPID_NULL) /* if AIOP does not exist */
2658 break; /* done looking for AIOPs */
2660 CtlP->AiopNumChan[i] = sReadAiopNumChan((WordIO_t) io); /* num channels in AIOP */
2661 sOutW((WordIO_t) io + _INDX_ADDR, _CLK_PRE); /* clock prescaler */
2662 sOutB(io + _INDX_DATA, sClockPrescale);
2663 CtlP->NumAiop++; /* bump count of AIOPs */
2666 if (CtlP->NumAiop == 0)
2669 return (CtlP->NumAiop);
2672 /***************************************************************************
2673 Function: sReadAiopID
2674 Purpose: Read the AIOP idenfication number directly from an AIOP.
2675 Call: sReadAiopID(io)
2676 ByteIO_t io: AIOP base I/O address
2677 Return: int: Flag AIOPID_XXXX if a valid AIOP is found, where X
2678 is replace by an identifying number.
2679 Flag AIOPID_NULL if no valid AIOP is found
2680 Warnings: No context switches are allowed while executing this function.
2683 static int sReadAiopID(ByteIO_t io)
2685 Byte_t AiopID; /* ID byte from AIOP */
2687 sOutB(io + _CMD_REG, RESET_ALL); /* reset AIOP */
2688 sOutB(io + _CMD_REG, 0x0);
2689 AiopID = sInW(io + _CHN_STAT0) & 0x07;
2692 else /* AIOP does not exist */
2696 /***************************************************************************
2697 Function: sReadAiopNumChan
2698 Purpose: Read the number of channels available in an AIOP directly from
2700 Call: sReadAiopNumChan(io)
2701 WordIO_t io: AIOP base I/O address
2702 Return: int: The number of channels available
2703 Comments: The number of channels is determined by write/reads from identical
2704 offsets within the SRAM address spaces for channels 0 and 4.
2705 If the channel 4 space is mirrored to channel 0 it is a 4 channel
2706 AIOP, otherwise it is an 8 channel.
2707 Warnings: No context switches are allowed while executing this function.
2709 static int sReadAiopNumChan(WordIO_t io)
2712 static Byte_t R[4] = { 0x00, 0x00, 0x34, 0x12 };
2714 /* write to chan 0 SRAM */
2715 out32((DWordIO_t) io + _INDX_ADDR, R);
2716 sOutW(io + _INDX_ADDR, 0); /* read from SRAM, chan 0 */
2717 x = sInW(io + _INDX_DATA);
2718 sOutW(io + _INDX_ADDR, 0x4000); /* read from SRAM, chan 4 */
2719 if (x != sInW(io + _INDX_DATA)) /* if different must be 8 chan */
2725 /***************************************************************************
2727 Purpose: Initialization of a channel and channel structure
2728 Call: sInitChan(CtlP,ChP,AiopNum,ChanNum)
2729 CONTROLLER_T *CtlP; Ptr to controller structure
2730 CHANNEL_T *ChP; Ptr to channel structure
2731 int AiopNum; AIOP number within controller
2732 int ChanNum; Channel number within AIOP
2733 Return: int: 1 if initialization succeeded, 0 if it fails because channel
2734 number exceeds number of channels available in AIOP.
2735 Comments: This function must be called before a channel can be used.
2736 Warnings: No range checking on any of the parameters is done.
2738 No context switches are allowed while executing this function.
2740 static int sInitChan(CONTROLLER_T * CtlP, CHANNEL_T * ChP, int AiopNum,
2751 if (ChanNum >= CtlP->AiopNumChan[AiopNum])
2752 return 0; /* exceeds num chans in AIOP */
2754 /* Channel, AIOP, and controller identifiers */
2756 ChP->ChanID = CtlP->AiopID[AiopNum];
2757 ChP->AiopNum = AiopNum;
2758 ChP->ChanNum = ChanNum;
2760 /* Global direct addresses */
2761 AiopIO = CtlP->AiopIO[AiopNum];
2762 ChP->Cmd = (ByteIO_t) AiopIO + _CMD_REG;
2763 ChP->IntChan = (ByteIO_t) AiopIO + _INT_CHAN;
2764 ChP->IntMask = (ByteIO_t) AiopIO + _INT_MASK;
2765 ChP->IndexAddr = (DWordIO_t) AiopIO + _INDX_ADDR;
2766 ChP->IndexData = AiopIO + _INDX_DATA;
2768 /* Channel direct addresses */
2769 ChIOOff = AiopIO + ChP->ChanNum * 2;
2770 ChP->TxRxData = ChIOOff + _TD0;
2771 ChP->ChanStat = ChIOOff + _CHN_STAT0;
2772 ChP->TxRxCount = ChIOOff + _FIFO_CNT0;
2773 ChP->IntID = (ByteIO_t) AiopIO + ChP->ChanNum + _INT_ID0;
2775 /* Initialize the channel from the RData array */
2776 for (i = 0; i < RDATASIZE; i += 4) {
2778 R[1] = RData[i + 1] + 0x10 * ChanNum;
2779 R[2] = RData[i + 2];
2780 R[3] = RData[i + 3];
2781 out32(ChP->IndexAddr, R);
2785 for (i = 0; i < RREGDATASIZE; i += 4) {
2786 ChR[i] = RRegData[i];
2787 ChR[i + 1] = RRegData[i + 1] + 0x10 * ChanNum;
2788 ChR[i + 2] = RRegData[i + 2];
2789 ChR[i + 3] = RRegData[i + 3];
2792 /* Indexed registers */
2793 ChOff = (Word_t) ChanNum *0x1000;
2795 if (sClockPrescale == 0x14)
2800 ChP->BaudDiv[0] = (Byte_t) (ChOff + _BAUD);
2801 ChP->BaudDiv[1] = (Byte_t) ((ChOff + _BAUD) >> 8);
2802 ChP->BaudDiv[2] = (Byte_t) brd9600;
2803 ChP->BaudDiv[3] = (Byte_t) (brd9600 >> 8);
2804 out32(ChP->IndexAddr, ChP->BaudDiv);
2806 ChP->TxControl[0] = (Byte_t) (ChOff + _TX_CTRL);
2807 ChP->TxControl[1] = (Byte_t) ((ChOff + _TX_CTRL) >> 8);
2808 ChP->TxControl[2] = 0;
2809 ChP->TxControl[3] = 0;
2810 out32(ChP->IndexAddr, ChP->TxControl);
2812 ChP->RxControl[0] = (Byte_t) (ChOff + _RX_CTRL);
2813 ChP->RxControl[1] = (Byte_t) ((ChOff + _RX_CTRL) >> 8);
2814 ChP->RxControl[2] = 0;
2815 ChP->RxControl[3] = 0;
2816 out32(ChP->IndexAddr, ChP->RxControl);
2818 ChP->TxEnables[0] = (Byte_t) (ChOff + _TX_ENBLS);
2819 ChP->TxEnables[1] = (Byte_t) ((ChOff + _TX_ENBLS) >> 8);
2820 ChP->TxEnables[2] = 0;
2821 ChP->TxEnables[3] = 0;
2822 out32(ChP->IndexAddr, ChP->TxEnables);
2824 ChP->TxCompare[0] = (Byte_t) (ChOff + _TXCMP1);
2825 ChP->TxCompare[1] = (Byte_t) ((ChOff + _TXCMP1) >> 8);
2826 ChP->TxCompare[2] = 0;
2827 ChP->TxCompare[3] = 0;
2828 out32(ChP->IndexAddr, ChP->TxCompare);
2830 ChP->TxReplace1[0] = (Byte_t) (ChOff + _TXREP1B1);
2831 ChP->TxReplace1[1] = (Byte_t) ((ChOff + _TXREP1B1) >> 8);
2832 ChP->TxReplace1[2] = 0;
2833 ChP->TxReplace1[3] = 0;
2834 out32(ChP->IndexAddr, ChP->TxReplace1);
2836 ChP->TxReplace2[0] = (Byte_t) (ChOff + _TXREP2);
2837 ChP->TxReplace2[1] = (Byte_t) ((ChOff + _TXREP2) >> 8);
2838 ChP->TxReplace2[2] = 0;
2839 ChP->TxReplace2[3] = 0;
2840 out32(ChP->IndexAddr, ChP->TxReplace2);
2842 ChP->TxFIFOPtrs = ChOff + _TXF_OUTP;
2843 ChP->TxFIFO = ChOff + _TX_FIFO;
2845 sOutB(ChP->Cmd, (Byte_t) ChanNum | RESTXFCNT); /* apply reset Tx FIFO count */
2846 sOutB(ChP->Cmd, (Byte_t) ChanNum); /* remove reset Tx FIFO count */
2847 sOutW((WordIO_t) ChP->IndexAddr, ChP->TxFIFOPtrs); /* clear Tx in/out ptrs */
2848 sOutW(ChP->IndexData, 0);
2849 ChP->RxFIFOPtrs = ChOff + _RXF_OUTP;
2850 ChP->RxFIFO = ChOff + _RX_FIFO;
2852 sOutB(ChP->Cmd, (Byte_t) ChanNum | RESRXFCNT); /* apply reset Rx FIFO count */
2853 sOutB(ChP->Cmd, (Byte_t) ChanNum); /* remove reset Rx FIFO count */
2854 sOutW((WordIO_t) ChP->IndexAddr, ChP->RxFIFOPtrs); /* clear Rx out ptr */
2855 sOutW(ChP->IndexData, 0);
2856 sOutW((WordIO_t) ChP->IndexAddr, ChP->RxFIFOPtrs + 2); /* clear Rx in ptr */
2857 sOutW(ChP->IndexData, 0);
2858 ChP->TxPrioCnt = ChOff + _TXP_CNT;
2859 sOutW((WordIO_t) ChP->IndexAddr, ChP->TxPrioCnt);
2860 sOutB(ChP->IndexData, 0);
2861 ChP->TxPrioPtr = ChOff + _TXP_PNTR;
2862 sOutW((WordIO_t) ChP->IndexAddr, ChP->TxPrioPtr);
2863 sOutB(ChP->IndexData, 0);
2864 ChP->TxPrioBuf = ChOff + _TXP_BUF;
2865 sEnRxProcessor(ChP); /* start the Rx processor */
2870 /***************************************************************************
2871 Function: sStopRxProcessor
2872 Purpose: Stop the receive processor from processing a channel.
2873 Call: sStopRxProcessor(ChP)
2874 CHANNEL_T *ChP; Ptr to channel structure
2876 Comments: The receive processor can be started again with sStartRxProcessor().
2877 This function causes the receive processor to skip over the
2878 stopped channel. It does not stop it from processing other channels.
2880 Warnings: No context switches are allowed while executing this function.
2882 Do not leave the receive processor stopped for more than one
2885 After calling this function a delay of 4 uS is required to ensure
2886 that the receive processor is no longer processing this channel.
2888 static void sStopRxProcessor(CHANNEL_T * ChP)
2896 out32(ChP->IndexAddr, R);
2899 /***************************************************************************
2900 Function: sFlushRxFIFO
2901 Purpose: Flush the Rx FIFO
2902 Call: sFlushRxFIFO(ChP)
2903 CHANNEL_T *ChP; Ptr to channel structure
2905 Comments: To prevent data from being enqueued or dequeued in the Tx FIFO
2906 while it is being flushed the receive processor is stopped
2907 and the transmitter is disabled. After these operations a
2908 4 uS delay is done before clearing the pointers to allow
2909 the receive processor to stop. These items are handled inside
2911 Warnings: No context switches are allowed while executing this function.
2913 static void sFlushRxFIFO(CHANNEL_T * ChP)
2916 Byte_t Ch; /* channel number within AIOP */
2917 int RxFIFOEnabled; /* 1 if Rx FIFO enabled */
2919 if (sGetRxCnt(ChP) == 0) /* Rx FIFO empty */
2920 return; /* don't need to flush */
2923 if (ChP->R[0x32] == 0x08) { /* Rx FIFO is enabled */
2925 sDisRxFIFO(ChP); /* disable it */
2926 for (i = 0; i < 2000 / 200; i++) /* delay 2 uS to allow proc to disable FIFO */
2927 sInB(ChP->IntChan); /* depends on bus i/o timing */
2929 sGetChanStatus(ChP); /* clear any pending Rx errors in chan stat */
2930 Ch = (Byte_t) sGetChanNum(ChP);
2931 sOutB(ChP->Cmd, Ch | RESRXFCNT); /* apply reset Rx FIFO count */
2932 sOutB(ChP->Cmd, Ch); /* remove reset Rx FIFO count */
2933 sOutW((WordIO_t) ChP->IndexAddr, ChP->RxFIFOPtrs); /* clear Rx out ptr */
2934 sOutW(ChP->IndexData, 0);
2935 sOutW((WordIO_t) ChP->IndexAddr, ChP->RxFIFOPtrs + 2); /* clear Rx in ptr */
2936 sOutW(ChP->IndexData, 0);
2938 sEnRxFIFO(ChP); /* enable Rx FIFO */
2941 /***************************************************************************
2942 Function: sFlushTxFIFO
2943 Purpose: Flush the Tx FIFO
2944 Call: sFlushTxFIFO(ChP)
2945 CHANNEL_T *ChP; Ptr to channel structure
2947 Comments: To prevent data from being enqueued or dequeued in the Tx FIFO
2948 while it is being flushed the receive processor is stopped
2949 and the transmitter is disabled. After these operations a
2950 4 uS delay is done before clearing the pointers to allow
2951 the receive processor to stop. These items are handled inside
2953 Warnings: No context switches are allowed while executing this function.
2955 static void sFlushTxFIFO(CHANNEL_T * ChP)
2958 Byte_t Ch; /* channel number within AIOP */
2959 int TxEnabled; /* 1 if transmitter enabled */
2961 if (sGetTxCnt(ChP) == 0) /* Tx FIFO empty */
2962 return; /* don't need to flush */
2965 if (ChP->TxControl[3] & TX_ENABLE) {
2967 sDisTransmit(ChP); /* disable transmitter */
2969 sStopRxProcessor(ChP); /* stop Rx processor */
2970 for (i = 0; i < 4000 / 200; i++) /* delay 4 uS to allow proc to stop */
2971 sInB(ChP->IntChan); /* depends on bus i/o timing */
2972 Ch = (Byte_t) sGetChanNum(ChP);
2973 sOutB(ChP->Cmd, Ch | RESTXFCNT); /* apply reset Tx FIFO count */
2974 sOutB(ChP->Cmd, Ch); /* remove reset Tx FIFO count */
2975 sOutW((WordIO_t) ChP->IndexAddr, ChP->TxFIFOPtrs); /* clear Tx in/out ptrs */
2976 sOutW(ChP->IndexData, 0);
2978 sEnTransmit(ChP); /* enable transmitter */
2979 sStartRxProcessor(ChP); /* restart Rx processor */
2982 /***************************************************************************
2983 Function: sWriteTxPrioByte
2984 Purpose: Write a byte of priority transmit data to a channel
2985 Call: sWriteTxPrioByte(ChP,Data)
2986 CHANNEL_T *ChP; Ptr to channel structure
2987 Byte_t Data; The transmit data byte
2989 Return: int: 1 if the bytes is successfully written, otherwise 0.
2991 Comments: The priority byte is transmitted before any data in the Tx FIFO.
2993 Warnings: No context switches are allowed while executing this function.
2995 static int sWriteTxPrioByte(CHANNEL_T * ChP, Byte_t Data)
2997 Byte_t DWBuf[4]; /* buffer for double word writes */
2998 Word_t *WordPtr; /* must be far because Win SS != DS */
2999 register DWordIO_t IndexAddr;
3001 if (sGetTxCnt(ChP) > 1) { /* write it to Tx priority buffer */
3002 IndexAddr = ChP->IndexAddr;
3003 sOutW((WordIO_t) IndexAddr, ChP->TxPrioCnt); /* get priority buffer status */
3004 if (sInB((ByteIO_t) ChP->IndexData) & PRI_PEND) /* priority buffer busy */
3005 return (0); /* nothing sent */
3007 WordPtr = (Word_t *) (&DWBuf[0]);
3008 *WordPtr = ChP->TxPrioBuf; /* data byte address */
3010 DWBuf[2] = Data; /* data byte value */
3011 out32(IndexAddr, DWBuf); /* write it out */
3013 *WordPtr = ChP->TxPrioCnt; /* Tx priority count address */
3015 DWBuf[2] = PRI_PEND + 1; /* indicate 1 byte pending */
3016 DWBuf[3] = 0; /* priority buffer pointer */
3017 out32(IndexAddr, DWBuf); /* write it out */
3018 } else { /* write it to Tx FIFO */
3020 sWriteTxByte(sGetTxRxDataIO(ChP), Data);
3022 return (1); /* 1 byte sent */
3025 /***************************************************************************
3026 Function: sEnInterrupts
3027 Purpose: Enable one or more interrupts for a channel
3028 Call: sEnInterrupts(ChP,Flags)
3029 CHANNEL_T *ChP; Ptr to channel structure
3030 Word_t Flags: Interrupt enable flags, can be any combination
3031 of the following flags:
3032 TXINT_EN: Interrupt on Tx FIFO empty
3033 RXINT_EN: Interrupt on Rx FIFO at trigger level (see
3035 SRCINT_EN: Interrupt on SRC (Special Rx Condition)
3036 MCINT_EN: Interrupt on modem input change
3037 CHANINT_EN: Allow channel interrupt signal to the AIOP's
3038 Interrupt Channel Register.
3040 Comments: If an interrupt enable flag is set in Flags, that interrupt will be
3041 enabled. If an interrupt enable flag is not set in Flags, that
3042 interrupt will not be changed. Interrupts can be disabled with
3043 function sDisInterrupts().
3045 This function sets the appropriate bit for the channel in the AIOP's
3046 Interrupt Mask Register if the CHANINT_EN flag is set. This allows
3047 this channel's bit to be set in the AIOP's Interrupt Channel Register.
3049 Interrupts must also be globally enabled before channel interrupts
3050 will be passed on to the host. This is done with function
3053 In some cases it may be desirable to disable interrupts globally but
3054 enable channel interrupts. This would allow the global interrupt
3055 status register to be used to determine which AIOPs need service.
3057 static void sEnInterrupts(CHANNEL_T * ChP, Word_t Flags)
3059 Byte_t Mask; /* Interrupt Mask Register */
3061 ChP->RxControl[2] |=
3062 ((Byte_t) Flags & (RXINT_EN | SRCINT_EN | MCINT_EN));
3064 out32(ChP->IndexAddr, ChP->RxControl);
3066 ChP->TxControl[2] |= ((Byte_t) Flags & TXINT_EN);
3068 out32(ChP->IndexAddr, ChP->TxControl);
3070 if (Flags & CHANINT_EN) {
3071 Mask = sInB(ChP->IntMask) | sBitMapSetTbl[ChP->ChanNum];
3072 sOutB(ChP->IntMask, Mask);
3076 /***************************************************************************
3077 Function: sDisInterrupts
3078 Purpose: Disable one or more interrupts for a channel
3079 Call: sDisInterrupts(ChP,Flags)
3080 CHANNEL_T *ChP; Ptr to channel structure
3081 Word_t Flags: Interrupt flags, can be any combination
3082 of the following flags:
3083 TXINT_EN: Interrupt on Tx FIFO empty
3084 RXINT_EN: Interrupt on Rx FIFO at trigger level (see
3086 SRCINT_EN: Interrupt on SRC (Special Rx Condition)
3087 MCINT_EN: Interrupt on modem input change
3088 CHANINT_EN: Disable channel interrupt signal to the
3089 AIOP's Interrupt Channel Register.
3091 Comments: If an interrupt flag is set in Flags, that interrupt will be
3092 disabled. If an interrupt flag is not set in Flags, that
3093 interrupt will not be changed. Interrupts can be enabled with
3094 function sEnInterrupts().
3096 This function clears the appropriate bit for the channel in the AIOP's
3097 Interrupt Mask Register if the CHANINT_EN flag is set. This blocks
3098 this channel's bit from being set in the AIOP's Interrupt Channel
3101 static void sDisInterrupts(CHANNEL_T * ChP, Word_t Flags)
3103 Byte_t Mask; /* Interrupt Mask Register */
3105 ChP->RxControl[2] &=
3106 ~((Byte_t) Flags & (RXINT_EN | SRCINT_EN | MCINT_EN));
3107 out32(ChP->IndexAddr, ChP->RxControl);
3108 ChP->TxControl[2] &= ~((Byte_t) Flags & TXINT_EN);
3109 out32(ChP->IndexAddr, ChP->TxControl);
3111 if (Flags & CHANINT_EN) {
3112 Mask = sInB(ChP->IntMask) & sBitMapClrTbl[ChP->ChanNum];
3113 sOutB(ChP->IntMask, Mask);
3117 static void sSetInterfaceMode(CHANNEL_T * ChP, Byte_t mode)
3119 sOutB(ChP->CtlP->AiopIO[2], (mode & 0x18) | ChP->ChanNum);
3123 * Not an official SSCI function, but how to reset RocketModems.
3126 static void sModemReset(CONTROLLER_T * CtlP, int chan, int on)
3131 addr = CtlP->AiopIO[0] + 0x400;
3132 val = sInB(CtlP->MReg3IO);
3133 /* if AIOP[1] is not enabled, enable it */
3134 if ((val & 2) == 0) {
3135 val = sInB(CtlP->MReg2IO);
3136 sOutB(CtlP->MReg2IO, (val & 0xfc) | (1 & 0x03));
3137 sOutB(CtlP->MBaseIO, (unsigned char) (addr >> 6));
3143 sOutB(addr + chan, 0); /* apply or remove reset */
3148 * Not an official SSCI function, but how to reset RocketModems.
3151 static void sPCIModemReset(CONTROLLER_T * CtlP, int chan, int on)
3155 addr = CtlP->AiopIO[0] + 0x40; /* 2nd AIOP */
3158 sOutB(addr + chan, 0); /* apply or remove reset */
3161 /* Resets the speaker controller on RocketModem II and III devices */
3162 static void rmSpeakerReset(CONTROLLER_T * CtlP, unsigned long model)
3166 /* RocketModem II speaker control is at the 8th port location of offset 0x40 */
3167 if ((model == MODEL_RP4M) || (model == MODEL_RP6M)) {
3168 addr = CtlP->AiopIO[0] + 0x4F;
3172 /* RocketModem III speaker control is at the 1st port location of offset 0x80 */
3173 if ((model == MODEL_UPCI_RM3_8PORT)
3174 || (model == MODEL_UPCI_RM3_4PORT)) {
3175 addr = CtlP->AiopIO[0] + 0x88;
3180 /* Returns the line number given the controller (board), aiop and channel number */
3181 static unsigned char GetLineNumber(int ctrl, int aiop, int ch)
3183 return lineNumbers[(ctrl << 5) | (aiop << 3) | ch];
3187 * Stores the line number associated with a given controller (board), aiop
3188 * and channel number.
3189 * Returns: The line number assigned
3191 static unsigned char SetLineNumber(int ctrl, int aiop, int ch)
3193 lineNumbers[(ctrl << 5) | (aiop << 3) | ch] = nextLineNumber++;
3194 return (nextLineNumber - 1);