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 cp = &info->channel;
1021 * Before we drop DTR, make sure the UART transmitter
1022 * has completely drained; this is especially
1023 * important if there is a transmit FIFO!
1025 timeout = (sGetTxCnt(cp) + 1) * HZ / info->cps;
1028 rp_wait_until_sent(tty, timeout);
1029 clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
1032 sDisInterrupts(cp, (TXINT_EN | MCINT_EN | RXINT_EN | SRCINT_EN | CHANINT_EN));
1034 sDisTxSoftFlowCtl(cp);
1042 rp_flush_buffer(tty);
1044 tty_ldisc_flush(tty);
1046 clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
1048 /* We can't yet use tty_port_close_end as the buffer handling in this
1049 driver is a bit different to the usual */
1051 if (port->blocked_open) {
1052 if (port->close_delay) {
1053 msleep_interruptible(jiffies_to_msecs(port->close_delay));
1055 wake_up_interruptible(&port->open_wait);
1057 if (info->xmit_buf) {
1058 free_page((unsigned long) info->xmit_buf);
1059 info->xmit_buf = NULL;
1062 info->port.flags &= ~(ASYNC_INITIALIZED | ASYNC_CLOSING | ASYNC_NORMAL_ACTIVE);
1064 tty_port_tty_set(port, NULL);
1065 wake_up_interruptible(&port->close_wait);
1066 complete_all(&info->close_wait);
1067 atomic_dec(&rp_num_ports_open);
1069 #ifdef ROCKET_DEBUG_OPEN
1070 printk(KERN_INFO "rocket mod-- = %d...\n",
1071 atomic_read(&rp_num_ports_open));
1072 printk(KERN_INFO "rp_close ttyR%d complete shutdown\n", info->line);
1077 static void rp_set_termios(struct tty_struct *tty,
1078 struct ktermios *old_termios)
1080 struct r_port *info = tty->driver_data;
1084 if (rocket_paranoia_check(info, "rp_set_termios"))
1087 cflag = tty->termios->c_cflag;
1090 * This driver doesn't support CS5 or CS6
1092 if (((cflag & CSIZE) == CS5) || ((cflag & CSIZE) == CS6))
1093 tty->termios->c_cflag =
1094 ((cflag & ~CSIZE) | (old_termios->c_cflag & CSIZE));
1096 tty->termios->c_cflag &= ~CMSPAR;
1098 configure_r_port(tty, info, old_termios);
1100 cp = &info->channel;
1102 /* Handle transition to B0 status */
1103 if ((old_termios->c_cflag & CBAUD) && !(tty->termios->c_cflag & CBAUD)) {
1108 /* Handle transition away from B0 status */
1109 if (!(old_termios->c_cflag & CBAUD) && (tty->termios->c_cflag & CBAUD)) {
1110 if (!tty->hw_stopped || !(tty->termios->c_cflag & CRTSCTS))
1115 if ((old_termios->c_cflag & CRTSCTS) && !(tty->termios->c_cflag & CRTSCTS)) {
1116 tty->hw_stopped = 0;
1121 static int rp_break(struct tty_struct *tty, int break_state)
1123 struct r_port *info = tty->driver_data;
1124 unsigned long flags;
1126 if (rocket_paranoia_check(info, "rp_break"))
1129 spin_lock_irqsave(&info->slock, flags);
1130 if (break_state == -1)
1131 sSendBreak(&info->channel);
1133 sClrBreak(&info->channel);
1134 spin_unlock_irqrestore(&info->slock, flags);
1139 * sGetChanRI used to be a macro in rocket_int.h. When the functionality for
1140 * the UPCI boards was added, it was decided to make this a function because
1141 * the macro was getting too complicated. All cases except the first one
1142 * (UPCIRingInd) are taken directly from the original macro.
1144 static int sGetChanRI(CHANNEL_T * ChP)
1146 CONTROLLER_t *CtlP = ChP->CtlP;
1147 int ChanNum = ChP->ChanNum;
1150 if (CtlP->UPCIRingInd)
1151 RingInd = !(sInB(CtlP->UPCIRingInd) & sBitMapSetTbl[ChanNum]);
1152 else if (CtlP->AltChanRingIndicator)
1153 RingInd = sInB((ByteIO_t) (ChP->ChanStat + 8)) & DSR_ACT;
1154 else if (CtlP->boardType == ROCKET_TYPE_PC104)
1155 RingInd = !(sInB(CtlP->AiopIO[3]) & sBitMapSetTbl[ChanNum]);
1160 /********************************************************************************************/
1161 /* Here are the routines used by rp_ioctl. These are all called from exception handlers. */
1164 * Returns the state of the serial modem control lines. These next 2 functions
1165 * are the way kernel versions > 2.5 handle modem control lines rather than IOCTLs.
1167 static int rp_tiocmget(struct tty_struct *tty, struct file *file)
1169 struct r_port *info = tty->driver_data;
1170 unsigned int control, result, ChanStatus;
1172 ChanStatus = sGetChanStatusLo(&info->channel);
1173 control = info->channel.TxControl[3];
1174 result = ((control & SET_RTS) ? TIOCM_RTS : 0) |
1175 ((control & SET_DTR) ? TIOCM_DTR : 0) |
1176 ((ChanStatus & CD_ACT) ? TIOCM_CAR : 0) |
1177 (sGetChanRI(&info->channel) ? TIOCM_RNG : 0) |
1178 ((ChanStatus & DSR_ACT) ? TIOCM_DSR : 0) |
1179 ((ChanStatus & CTS_ACT) ? TIOCM_CTS : 0);
1185 * Sets the modem control lines
1187 static int rp_tiocmset(struct tty_struct *tty, struct file *file,
1188 unsigned int set, unsigned int clear)
1190 struct r_port *info = tty->driver_data;
1192 if (set & TIOCM_RTS)
1193 info->channel.TxControl[3] |= SET_RTS;
1194 if (set & TIOCM_DTR)
1195 info->channel.TxControl[3] |= SET_DTR;
1196 if (clear & TIOCM_RTS)
1197 info->channel.TxControl[3] &= ~SET_RTS;
1198 if (clear & TIOCM_DTR)
1199 info->channel.TxControl[3] &= ~SET_DTR;
1201 out32(info->channel.IndexAddr, info->channel.TxControl);
1205 static int get_config(struct r_port *info, struct rocket_config __user *retinfo)
1207 struct rocket_config tmp;
1211 memset(&tmp, 0, sizeof (tmp));
1212 tmp.line = info->line;
1213 tmp.flags = info->flags;
1214 tmp.close_delay = info->port.close_delay;
1215 tmp.closing_wait = info->port.closing_wait;
1216 tmp.port = rcktpt_io_addr[(info->line >> 5) & 3];
1218 if (copy_to_user(retinfo, &tmp, sizeof (*retinfo)))
1223 static int set_config(struct tty_struct *tty, struct r_port *info,
1224 struct rocket_config __user *new_info)
1226 struct rocket_config new_serial;
1228 if (copy_from_user(&new_serial, new_info, sizeof (new_serial)))
1231 if (!capable(CAP_SYS_ADMIN))
1233 if ((new_serial.flags & ~ROCKET_USR_MASK) != (info->flags & ~ROCKET_USR_MASK))
1235 info->flags = ((info->flags & ~ROCKET_USR_MASK) | (new_serial.flags & ROCKET_USR_MASK));
1236 configure_r_port(tty, info, NULL);
1240 info->flags = ((info->flags & ~ROCKET_FLAGS) | (new_serial.flags & ROCKET_FLAGS));
1241 info->port.close_delay = new_serial.close_delay;
1242 info->port.closing_wait = new_serial.closing_wait;
1244 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_HI)
1245 tty->alt_speed = 57600;
1246 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_VHI)
1247 tty->alt_speed = 115200;
1248 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_SHI)
1249 tty->alt_speed = 230400;
1250 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_WARP)
1251 tty->alt_speed = 460800;
1253 configure_r_port(tty, info, NULL);
1258 * This function fills in a rocket_ports struct with information
1259 * about what boards/ports are in the system. This info is passed
1260 * to user space. See setrocket.c where the info is used to create
1261 * the /dev/ttyRx ports.
1263 static int get_ports(struct r_port *info, struct rocket_ports __user *retports)
1265 struct rocket_ports tmp;
1270 memset(&tmp, 0, sizeof (tmp));
1271 tmp.tty_major = rocket_driver->major;
1273 for (board = 0; board < 4; board++) {
1274 tmp.rocketModel[board].model = rocketModel[board].model;
1275 strcpy(tmp.rocketModel[board].modelString, rocketModel[board].modelString);
1276 tmp.rocketModel[board].numPorts = rocketModel[board].numPorts;
1277 tmp.rocketModel[board].loadrm2 = rocketModel[board].loadrm2;
1278 tmp.rocketModel[board].startingPortNumber = rocketModel[board].startingPortNumber;
1280 if (copy_to_user(retports, &tmp, sizeof (*retports)))
1285 static int reset_rm2(struct r_port *info, void __user *arg)
1289 if (!capable(CAP_SYS_ADMIN))
1292 if (copy_from_user(&reset, arg, sizeof (int)))
1297 if (rcktpt_type[info->board] != ROCKET_TYPE_MODEMII &&
1298 rcktpt_type[info->board] != ROCKET_TYPE_MODEMIII)
1301 if (info->ctlp->BusType == isISA)
1302 sModemReset(info->ctlp, info->chan, reset);
1304 sPCIModemReset(info->ctlp, info->chan, reset);
1309 static int get_version(struct r_port *info, struct rocket_version __user *retvers)
1311 if (copy_to_user(retvers, &driver_version, sizeof (*retvers)))
1316 /* IOCTL call handler into the driver */
1317 static int rp_ioctl(struct tty_struct *tty, struct file *file,
1318 unsigned int cmd, unsigned long arg)
1320 struct r_port *info = tty->driver_data;
1321 void __user *argp = (void __user *)arg;
1324 if (cmd != RCKP_GET_PORTS && rocket_paranoia_check(info, "rp_ioctl"))
1330 case RCKP_GET_STRUCT:
1331 if (copy_to_user(argp, info, sizeof (struct r_port)))
1334 case RCKP_GET_CONFIG:
1335 ret = get_config(info, argp);
1337 case RCKP_SET_CONFIG:
1338 ret = set_config(tty, info, argp);
1340 case RCKP_GET_PORTS:
1341 ret = get_ports(info, argp);
1343 case RCKP_RESET_RM2:
1344 ret = reset_rm2(info, argp);
1346 case RCKP_GET_VERSION:
1347 ret = get_version(info, argp);
1356 static void rp_send_xchar(struct tty_struct *tty, char ch)
1358 struct r_port *info = tty->driver_data;
1361 if (rocket_paranoia_check(info, "rp_send_xchar"))
1364 cp = &info->channel;
1366 sWriteTxPrioByte(cp, ch);
1368 sWriteTxByte(sGetTxRxDataIO(cp), ch);
1371 static void rp_throttle(struct tty_struct *tty)
1373 struct r_port *info = tty->driver_data;
1376 #ifdef ROCKET_DEBUG_THROTTLE
1377 printk(KERN_INFO "throttle %s: %d....\n", tty->name,
1378 tty->ldisc.chars_in_buffer(tty));
1381 if (rocket_paranoia_check(info, "rp_throttle"))
1384 cp = &info->channel;
1386 rp_send_xchar(tty, STOP_CHAR(tty));
1388 sClrRTS(&info->channel);
1391 static void rp_unthrottle(struct tty_struct *tty)
1393 struct r_port *info = tty->driver_data;
1395 #ifdef ROCKET_DEBUG_THROTTLE
1396 printk(KERN_INFO "unthrottle %s: %d....\n", tty->name,
1397 tty->ldisc.chars_in_buffer(tty));
1400 if (rocket_paranoia_check(info, "rp_throttle"))
1403 cp = &info->channel;
1405 rp_send_xchar(tty, START_CHAR(tty));
1407 sSetRTS(&info->channel);
1411 * ------------------------------------------------------------
1412 * rp_stop() and rp_start()
1414 * This routines are called before setting or resetting tty->stopped.
1415 * They enable or disable transmitter interrupts, as necessary.
1416 * ------------------------------------------------------------
1418 static void rp_stop(struct tty_struct *tty)
1420 struct r_port *info = tty->driver_data;
1422 #ifdef ROCKET_DEBUG_FLOW
1423 printk(KERN_INFO "stop %s: %d %d....\n", tty->name,
1424 info->xmit_cnt, info->xmit_fifo_room);
1427 if (rocket_paranoia_check(info, "rp_stop"))
1430 if (sGetTxCnt(&info->channel))
1431 sDisTransmit(&info->channel);
1434 static void rp_start(struct tty_struct *tty)
1436 struct r_port *info = tty->driver_data;
1438 #ifdef ROCKET_DEBUG_FLOW
1439 printk(KERN_INFO "start %s: %d %d....\n", tty->name,
1440 info->xmit_cnt, info->xmit_fifo_room);
1443 if (rocket_paranoia_check(info, "rp_stop"))
1446 sEnTransmit(&info->channel);
1447 set_bit((info->aiop * 8) + info->chan,
1448 (void *) &xmit_flags[info->board]);
1452 * rp_wait_until_sent() --- wait until the transmitter is empty
1454 static void rp_wait_until_sent(struct tty_struct *tty, int timeout)
1456 struct r_port *info = tty->driver_data;
1458 unsigned long orig_jiffies;
1459 int check_time, exit_time;
1462 if (rocket_paranoia_check(info, "rp_wait_until_sent"))
1465 cp = &info->channel;
1467 orig_jiffies = jiffies;
1468 #ifdef ROCKET_DEBUG_WAIT_UNTIL_SENT
1469 printk(KERN_INFO "In RP_wait_until_sent(%d) (jiff=%lu)...\n", timeout,
1471 printk(KERN_INFO "cps=%d...\n", info->cps);
1475 txcnt = sGetTxCnt(cp);
1477 if (sGetChanStatusLo(cp) & TXSHRMT)
1479 check_time = (HZ / info->cps) / 5;
1481 check_time = HZ * txcnt / info->cps;
1484 exit_time = orig_jiffies + timeout - jiffies;
1487 if (exit_time < check_time)
1488 check_time = exit_time;
1490 if (check_time == 0)
1492 #ifdef ROCKET_DEBUG_WAIT_UNTIL_SENT
1493 printk(KERN_INFO "txcnt = %d (jiff=%lu,check=%d)...\n", txcnt,
1494 jiffies, check_time);
1496 msleep_interruptible(jiffies_to_msecs(check_time));
1497 if (signal_pending(current))
1500 __set_current_state(TASK_RUNNING);
1502 #ifdef ROCKET_DEBUG_WAIT_UNTIL_SENT
1503 printk(KERN_INFO "txcnt = %d (jiff=%lu)...done\n", txcnt, jiffies);
1508 * rp_hangup() --- called by tty_hangup() when a hangup is signaled.
1510 static void rp_hangup(struct tty_struct *tty)
1513 struct r_port *info = tty->driver_data;
1515 if (rocket_paranoia_check(info, "rp_hangup"))
1518 #if (defined(ROCKET_DEBUG_OPEN) || defined(ROCKET_DEBUG_HANGUP))
1519 printk(KERN_INFO "rp_hangup of ttyR%d...\n", info->line);
1521 rp_flush_buffer(tty);
1522 if (info->port.flags & ASYNC_CLOSING)
1524 if (info->port.count)
1525 atomic_dec(&rp_num_ports_open);
1526 clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
1528 tty_port_hangup(&info->port);
1530 cp = &info->channel;
1533 sDisInterrupts(cp, (TXINT_EN | MCINT_EN | RXINT_EN | SRCINT_EN | CHANINT_EN));
1535 sDisTxSoftFlowCtl(cp);
1537 info->port.flags &= ~ASYNC_INITIALIZED;
1539 wake_up_interruptible(&info->port.open_wait);
1543 * Exception handler - write char routine. The RocketPort driver uses a
1544 * double-buffering strategy, with the twist that if the in-memory CPU
1545 * buffer is empty, and there's space in the transmit FIFO, the
1546 * writing routines will write directly to transmit FIFO.
1547 * Write buffer and counters protected by spinlocks
1549 static int rp_put_char(struct tty_struct *tty, unsigned char ch)
1551 struct r_port *info = tty->driver_data;
1553 unsigned long flags;
1555 if (rocket_paranoia_check(info, "rp_put_char"))
1559 * Grab the port write mutex, locking out other processes that try to
1560 * write to this port
1562 mutex_lock(&info->write_mtx);
1564 #ifdef ROCKET_DEBUG_WRITE
1565 printk(KERN_INFO "rp_put_char %c...\n", ch);
1568 spin_lock_irqsave(&info->slock, flags);
1569 cp = &info->channel;
1571 if (!tty->stopped && !tty->hw_stopped && info->xmit_fifo_room == 0)
1572 info->xmit_fifo_room = TXFIFO_SIZE - sGetTxCnt(cp);
1574 if (tty->stopped || tty->hw_stopped || info->xmit_fifo_room == 0 || info->xmit_cnt != 0) {
1575 info->xmit_buf[info->xmit_head++] = ch;
1576 info->xmit_head &= XMIT_BUF_SIZE - 1;
1578 set_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
1580 sOutB(sGetTxRxDataIO(cp), ch);
1581 info->xmit_fifo_room--;
1583 spin_unlock_irqrestore(&info->slock, flags);
1584 mutex_unlock(&info->write_mtx);
1589 * Exception handler - write routine, called when user app writes to the device.
1590 * A per port write mutex is used to protect from another process writing to
1591 * this port at the same time. This other process could be running on the other CPU
1592 * or get control of the CPU if the copy_from_user() blocks due to a page fault (swapped out).
1593 * Spinlocks protect the info xmit members.
1595 static int rp_write(struct tty_struct *tty,
1596 const unsigned char *buf, int count)
1598 struct r_port *info = tty->driver_data;
1600 const unsigned char *b;
1602 unsigned long flags;
1604 if (count <= 0 || rocket_paranoia_check(info, "rp_write"))
1607 if (mutex_lock_interruptible(&info->write_mtx))
1608 return -ERESTARTSYS;
1610 #ifdef ROCKET_DEBUG_WRITE
1611 printk(KERN_INFO "rp_write %d chars...\n", count);
1613 cp = &info->channel;
1615 if (!tty->stopped && !tty->hw_stopped && info->xmit_fifo_room < count)
1616 info->xmit_fifo_room = TXFIFO_SIZE - sGetTxCnt(cp);
1619 * If the write queue for the port is empty, and there is FIFO space, stuff bytes
1620 * into FIFO. Use the write queue for temp storage.
1622 if (!tty->stopped && !tty->hw_stopped && info->xmit_cnt == 0 && info->xmit_fifo_room > 0) {
1623 c = min(count, info->xmit_fifo_room);
1626 /* Push data into FIFO, 2 bytes at a time */
1627 sOutStrW(sGetTxRxDataIO(cp), (unsigned short *) b, c / 2);
1629 /* If there is a byte remaining, write it */
1631 sOutB(sGetTxRxDataIO(cp), b[c - 1]);
1637 spin_lock_irqsave(&info->slock, flags);
1638 info->xmit_fifo_room -= c;
1639 spin_unlock_irqrestore(&info->slock, flags);
1642 /* If count is zero, we wrote it all and are done */
1646 /* Write remaining data into the port's xmit_buf */
1649 if (!test_bit(ASYNCB_NORMAL_ACTIVE, &info->port.flags))
1651 c = min(count, XMIT_BUF_SIZE - info->xmit_cnt - 1);
1652 c = min(c, XMIT_BUF_SIZE - info->xmit_head);
1657 memcpy(info->xmit_buf + info->xmit_head, b, c);
1659 spin_lock_irqsave(&info->slock, flags);
1661 (info->xmit_head + c) & (XMIT_BUF_SIZE - 1);
1662 info->xmit_cnt += c;
1663 spin_unlock_irqrestore(&info->slock, flags);
1670 if ((retval > 0) && !tty->stopped && !tty->hw_stopped)
1671 set_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
1674 if (info->xmit_cnt < WAKEUP_CHARS) {
1676 #ifdef ROCKETPORT_HAVE_POLL_WAIT
1677 wake_up_interruptible(&tty->poll_wait);
1680 mutex_unlock(&info->write_mtx);
1685 * Return the number of characters that can be sent. We estimate
1686 * only using the in-memory transmit buffer only, and ignore the
1687 * potential space in the transmit FIFO.
1689 static int rp_write_room(struct tty_struct *tty)
1691 struct r_port *info = tty->driver_data;
1694 if (rocket_paranoia_check(info, "rp_write_room"))
1697 ret = XMIT_BUF_SIZE - info->xmit_cnt - 1;
1700 #ifdef ROCKET_DEBUG_WRITE
1701 printk(KERN_INFO "rp_write_room returns %d...\n", ret);
1707 * Return the number of characters in the buffer. Again, this only
1708 * counts those characters in the in-memory transmit buffer.
1710 static int rp_chars_in_buffer(struct tty_struct *tty)
1712 struct r_port *info = tty->driver_data;
1715 if (rocket_paranoia_check(info, "rp_chars_in_buffer"))
1718 cp = &info->channel;
1720 #ifdef ROCKET_DEBUG_WRITE
1721 printk(KERN_INFO "rp_chars_in_buffer returns %d...\n", info->xmit_cnt);
1723 return info->xmit_cnt;
1727 * Flushes the TX fifo for a port, deletes data in the xmit_buf stored in the
1728 * r_port struct for the port. Note that spinlock are used to protect info members,
1729 * do not call this function if the spinlock is already held.
1731 static void rp_flush_buffer(struct tty_struct *tty)
1733 struct r_port *info = tty->driver_data;
1735 unsigned long flags;
1737 if (rocket_paranoia_check(info, "rp_flush_buffer"))
1740 spin_lock_irqsave(&info->slock, flags);
1741 info->xmit_cnt = info->xmit_head = info->xmit_tail = 0;
1742 spin_unlock_irqrestore(&info->slock, flags);
1744 #ifdef ROCKETPORT_HAVE_POLL_WAIT
1745 wake_up_interruptible(&tty->poll_wait);
1749 cp = &info->channel;
1755 static struct pci_device_id __devinitdata rocket_pci_ids[] = {
1756 { PCI_DEVICE(PCI_VENDOR_ID_RP, PCI_ANY_ID) },
1759 MODULE_DEVICE_TABLE(pci, rocket_pci_ids);
1762 * Called when a PCI card is found. Retrieves and stores model information,
1763 * init's aiopic and serial port hardware.
1764 * Inputs: i is the board number (0-n)
1766 static __init int register_PCI(int i, struct pci_dev *dev)
1768 int num_aiops, aiop, max_num_aiops, num_chan, chan;
1769 unsigned int aiopio[MAX_AIOPS_PER_BOARD];
1770 char *str, *board_type;
1774 int altChanRingIndicator = 0;
1775 int ports_per_aiop = 8;
1776 WordIO_t ConfigIO = 0;
1777 ByteIO_t UPCIRingInd = 0;
1779 if (!dev || pci_enable_device(dev))
1782 rcktpt_io_addr[i] = pci_resource_start(dev, 0);
1784 rcktpt_type[i] = ROCKET_TYPE_NORMAL;
1785 rocketModel[i].loadrm2 = 0;
1786 rocketModel[i].startingPortNumber = nextLineNumber;
1788 /* Depending on the model, set up some config variables */
1789 switch (dev->device) {
1790 case PCI_DEVICE_ID_RP4QUAD:
1794 rocketModel[i].model = MODEL_RP4QUAD;
1795 strcpy(rocketModel[i].modelString, "RocketPort 4 port w/quad cable");
1796 rocketModel[i].numPorts = 4;
1798 case PCI_DEVICE_ID_RP8OCTA:
1801 rocketModel[i].model = MODEL_RP8OCTA;
1802 strcpy(rocketModel[i].modelString, "RocketPort 8 port w/octa cable");
1803 rocketModel[i].numPorts = 8;
1805 case PCI_DEVICE_ID_URP8OCTA:
1808 rocketModel[i].model = MODEL_UPCI_RP8OCTA;
1809 strcpy(rocketModel[i].modelString, "RocketPort UPCI 8 port w/octa cable");
1810 rocketModel[i].numPorts = 8;
1812 case PCI_DEVICE_ID_RP8INTF:
1815 rocketModel[i].model = MODEL_RP8INTF;
1816 strcpy(rocketModel[i].modelString, "RocketPort 8 port w/external I/F");
1817 rocketModel[i].numPorts = 8;
1819 case PCI_DEVICE_ID_URP8INTF:
1822 rocketModel[i].model = MODEL_UPCI_RP8INTF;
1823 strcpy(rocketModel[i].modelString, "RocketPort UPCI 8 port w/external I/F");
1824 rocketModel[i].numPorts = 8;
1826 case PCI_DEVICE_ID_RP8J:
1829 rocketModel[i].model = MODEL_RP8J;
1830 strcpy(rocketModel[i].modelString, "RocketPort 8 port w/RJ11 connectors");
1831 rocketModel[i].numPorts = 8;
1833 case PCI_DEVICE_ID_RP4J:
1837 rocketModel[i].model = MODEL_RP4J;
1838 strcpy(rocketModel[i].modelString, "RocketPort 4 port w/RJ45 connectors");
1839 rocketModel[i].numPorts = 4;
1841 case PCI_DEVICE_ID_RP8SNI:
1842 str = "8 (DB78 Custom)";
1844 rocketModel[i].model = MODEL_RP8SNI;
1845 strcpy(rocketModel[i].modelString, "RocketPort 8 port w/ custom DB78");
1846 rocketModel[i].numPorts = 8;
1848 case PCI_DEVICE_ID_RP16SNI:
1849 str = "16 (DB78 Custom)";
1851 rocketModel[i].model = MODEL_RP16SNI;
1852 strcpy(rocketModel[i].modelString, "RocketPort 16 port w/ custom DB78");
1853 rocketModel[i].numPorts = 16;
1855 case PCI_DEVICE_ID_RP16INTF:
1858 rocketModel[i].model = MODEL_RP16INTF;
1859 strcpy(rocketModel[i].modelString, "RocketPort 16 port w/external I/F");
1860 rocketModel[i].numPorts = 16;
1862 case PCI_DEVICE_ID_URP16INTF:
1865 rocketModel[i].model = MODEL_UPCI_RP16INTF;
1866 strcpy(rocketModel[i].modelString, "RocketPort UPCI 16 port w/external I/F");
1867 rocketModel[i].numPorts = 16;
1869 case PCI_DEVICE_ID_CRP16INTF:
1872 rocketModel[i].model = MODEL_CPCI_RP16INTF;
1873 strcpy(rocketModel[i].modelString, "RocketPort Compact PCI 16 port w/external I/F");
1874 rocketModel[i].numPorts = 16;
1876 case PCI_DEVICE_ID_RP32INTF:
1879 rocketModel[i].model = MODEL_RP32INTF;
1880 strcpy(rocketModel[i].modelString, "RocketPort 32 port w/external I/F");
1881 rocketModel[i].numPorts = 32;
1883 case PCI_DEVICE_ID_URP32INTF:
1886 rocketModel[i].model = MODEL_UPCI_RP32INTF;
1887 strcpy(rocketModel[i].modelString, "RocketPort UPCI 32 port w/external I/F");
1888 rocketModel[i].numPorts = 32;
1890 case PCI_DEVICE_ID_RPP4:
1891 str = "Plus Quadcable";
1894 altChanRingIndicator++;
1896 rocketModel[i].model = MODEL_RPP4;
1897 strcpy(rocketModel[i].modelString, "RocketPort Plus 4 port");
1898 rocketModel[i].numPorts = 4;
1900 case PCI_DEVICE_ID_RPP8:
1901 str = "Plus Octacable";
1904 altChanRingIndicator++;
1906 rocketModel[i].model = MODEL_RPP8;
1907 strcpy(rocketModel[i].modelString, "RocketPort Plus 8 port");
1908 rocketModel[i].numPorts = 8;
1910 case PCI_DEVICE_ID_RP2_232:
1911 str = "Plus 2 (RS-232)";
1914 altChanRingIndicator++;
1916 rocketModel[i].model = MODEL_RP2_232;
1917 strcpy(rocketModel[i].modelString, "RocketPort Plus 2 port RS232");
1918 rocketModel[i].numPorts = 2;
1920 case PCI_DEVICE_ID_RP2_422:
1921 str = "Plus 2 (RS-422)";
1924 altChanRingIndicator++;
1926 rocketModel[i].model = MODEL_RP2_422;
1927 strcpy(rocketModel[i].modelString, "RocketPort Plus 2 port RS422");
1928 rocketModel[i].numPorts = 2;
1930 case PCI_DEVICE_ID_RP6M:
1936 /* If revision is 1, the rocketmodem flash must be loaded.
1937 * If it is 2 it is a "socketed" version. */
1938 if (dev->revision == 1) {
1939 rcktpt_type[i] = ROCKET_TYPE_MODEMII;
1940 rocketModel[i].loadrm2 = 1;
1942 rcktpt_type[i] = ROCKET_TYPE_MODEM;
1945 rocketModel[i].model = MODEL_RP6M;
1946 strcpy(rocketModel[i].modelString, "RocketModem 6 port");
1947 rocketModel[i].numPorts = 6;
1949 case PCI_DEVICE_ID_RP4M:
1953 if (dev->revision == 1) {
1954 rcktpt_type[i] = ROCKET_TYPE_MODEMII;
1955 rocketModel[i].loadrm2 = 1;
1957 rcktpt_type[i] = ROCKET_TYPE_MODEM;
1960 rocketModel[i].model = MODEL_RP4M;
1961 strcpy(rocketModel[i].modelString, "RocketModem 4 port");
1962 rocketModel[i].numPorts = 4;
1965 str = "(unknown/unsupported)";
1971 * Check for UPCI boards.
1974 switch (dev->device) {
1975 case PCI_DEVICE_ID_URP32INTF:
1976 case PCI_DEVICE_ID_URP8INTF:
1977 case PCI_DEVICE_ID_URP16INTF:
1978 case PCI_DEVICE_ID_CRP16INTF:
1979 case PCI_DEVICE_ID_URP8OCTA:
1980 rcktpt_io_addr[i] = pci_resource_start(dev, 2);
1981 ConfigIO = pci_resource_start(dev, 1);
1982 if (dev->device == PCI_DEVICE_ID_URP8OCTA) {
1983 UPCIRingInd = rcktpt_io_addr[i] + _PCI_9030_RING_IND;
1986 * Check for octa or quad cable.
1989 (sInW(ConfigIO + _PCI_9030_GPIO_CTRL) &
1990 PCI_GPIO_CTRL_8PORT)) {
1993 rocketModel[i].numPorts = 4;
1997 case PCI_DEVICE_ID_UPCI_RM3_8PORT:
2000 rocketModel[i].model = MODEL_UPCI_RM3_8PORT;
2001 strcpy(rocketModel[i].modelString, "RocketModem III 8 port");
2002 rocketModel[i].numPorts = 8;
2003 rcktpt_io_addr[i] = pci_resource_start(dev, 2);
2004 UPCIRingInd = rcktpt_io_addr[i] + _PCI_9030_RING_IND;
2005 ConfigIO = pci_resource_start(dev, 1);
2006 rcktpt_type[i] = ROCKET_TYPE_MODEMIII;
2008 case PCI_DEVICE_ID_UPCI_RM3_4PORT:
2011 rocketModel[i].model = MODEL_UPCI_RM3_4PORT;
2012 strcpy(rocketModel[i].modelString, "RocketModem III 4 port");
2013 rocketModel[i].numPorts = 4;
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;
2023 switch (rcktpt_type[i]) {
2024 case ROCKET_TYPE_MODEM:
2025 board_type = "RocketModem";
2027 case ROCKET_TYPE_MODEMII:
2028 board_type = "RocketModem II";
2030 case ROCKET_TYPE_MODEMIII:
2031 board_type = "RocketModem III";
2034 board_type = "RocketPort";
2039 sClockPrescale = 0x12; /* mod 2 (divide by 3) */
2040 rp_baud_base[i] = 921600;
2043 * If support_low_speed is set, use the slow clock
2044 * prescale, which supports 50 bps
2046 if (support_low_speed) {
2047 /* mod 9 (divide by 10) prescale */
2048 sClockPrescale = 0x19;
2049 rp_baud_base[i] = 230400;
2051 /* mod 4 (devide by 5) prescale */
2052 sClockPrescale = 0x14;
2053 rp_baud_base[i] = 460800;
2057 for (aiop = 0; aiop < max_num_aiops; aiop++)
2058 aiopio[aiop] = rcktpt_io_addr[i] + (aiop * 0x40);
2059 ctlp = sCtlNumToCtlPtr(i);
2060 num_aiops = sPCIInitController(ctlp, i, aiopio, max_num_aiops, ConfigIO, 0, FREQ_DIS, 0, altChanRingIndicator, UPCIRingInd);
2061 for (aiop = 0; aiop < max_num_aiops; aiop++)
2062 ctlp->AiopNumChan[aiop] = ports_per_aiop;
2064 dev_info(&dev->dev, "comtrol PCI controller #%d found at "
2065 "address %04lx, %d AIOP(s) (%s), creating ttyR%d - %ld\n",
2066 i, rcktpt_io_addr[i], num_aiops, rocketModel[i].modelString,
2067 rocketModel[i].startingPortNumber,
2068 rocketModel[i].startingPortNumber + rocketModel[i].numPorts-1);
2070 if (num_aiops <= 0) {
2071 rcktpt_io_addr[i] = 0;
2076 /* Reset the AIOPIC, init the serial ports */
2077 for (aiop = 0; aiop < num_aiops; aiop++) {
2078 sResetAiopByNum(ctlp, aiop);
2079 num_chan = ports_per_aiop;
2080 for (chan = 0; chan < num_chan; chan++)
2081 init_r_port(i, aiop, chan, dev);
2084 /* Rocket modems must be reset */
2085 if ((rcktpt_type[i] == ROCKET_TYPE_MODEM) ||
2086 (rcktpt_type[i] == ROCKET_TYPE_MODEMII) ||
2087 (rcktpt_type[i] == ROCKET_TYPE_MODEMIII)) {
2088 num_chan = ports_per_aiop;
2089 for (chan = 0; chan < num_chan; chan++)
2090 sPCIModemReset(ctlp, chan, 1);
2092 for (chan = 0; chan < num_chan; chan++)
2093 sPCIModemReset(ctlp, chan, 0);
2095 rmSpeakerReset(ctlp, rocketModel[i].model);
2101 * Probes for PCI cards, inits them if found
2102 * Input: board_found = number of ISA boards already found, or the
2103 * starting board number
2104 * Returns: Number of PCI boards found
2106 static int __init init_PCI(int boards_found)
2108 struct pci_dev *dev = NULL;
2111 /* Work through the PCI device list, pulling out ours */
2112 while ((dev = pci_get_device(PCI_VENDOR_ID_RP, PCI_ANY_ID, dev))) {
2113 if (register_PCI(count + boards_found, dev))
2119 #endif /* CONFIG_PCI */
2122 * Probes for ISA cards
2123 * Input: i = the board number to look for
2124 * Returns: 1 if board found, 0 else
2126 static int __init init_ISA(int i)
2128 int num_aiops, num_chan = 0, total_num_chan = 0;
2130 unsigned int aiopio[MAX_AIOPS_PER_BOARD];
2134 /* If io_addr is zero, no board configured */
2135 if (rcktpt_io_addr[i] == 0)
2138 /* Reserve the IO region */
2139 if (!request_region(rcktpt_io_addr[i], 64, "Comtrol RocketPort")) {
2140 printk(KERN_ERR "Unable to reserve IO region for configured "
2141 "ISA RocketPort at address 0x%lx, board not "
2142 "installed...\n", rcktpt_io_addr[i]);
2143 rcktpt_io_addr[i] = 0;
2147 ctlp = sCtlNumToCtlPtr(i);
2149 ctlp->boardType = rcktpt_type[i];
2151 switch (rcktpt_type[i]) {
2152 case ROCKET_TYPE_PC104:
2153 type_string = "(PC104)";
2155 case ROCKET_TYPE_MODEM:
2156 type_string = "(RocketModem)";
2158 case ROCKET_TYPE_MODEMII:
2159 type_string = "(RocketModem II)";
2167 * If support_low_speed is set, use the slow clock prescale,
2168 * which supports 50 bps
2170 if (support_low_speed) {
2171 sClockPrescale = 0x19; /* mod 9 (divide by 10) prescale */
2172 rp_baud_base[i] = 230400;
2174 sClockPrescale = 0x14; /* mod 4 (devide by 5) prescale */
2175 rp_baud_base[i] = 460800;
2178 for (aiop = 0; aiop < MAX_AIOPS_PER_BOARD; aiop++)
2179 aiopio[aiop] = rcktpt_io_addr[i] + (aiop * 0x400);
2181 num_aiops = sInitController(ctlp, i, controller + (i * 0x400), aiopio, MAX_AIOPS_PER_BOARD, 0, FREQ_DIS, 0);
2183 if (ctlp->boardType == ROCKET_TYPE_PC104) {
2184 sEnAiop(ctlp, 2); /* only one AIOPIC, but these */
2185 sEnAiop(ctlp, 3); /* CSels used for other stuff */
2188 /* If something went wrong initing the AIOP's release the ISA IO memory */
2189 if (num_aiops <= 0) {
2190 release_region(rcktpt_io_addr[i], 64);
2191 rcktpt_io_addr[i] = 0;
2195 rocketModel[i].startingPortNumber = nextLineNumber;
2197 for (aiop = 0; aiop < num_aiops; aiop++) {
2198 sResetAiopByNum(ctlp, aiop);
2199 sEnAiop(ctlp, aiop);
2200 num_chan = sGetAiopNumChan(ctlp, aiop);
2201 total_num_chan += num_chan;
2202 for (chan = 0; chan < num_chan; chan++)
2203 init_r_port(i, aiop, chan, NULL);
2206 if ((rcktpt_type[i] == ROCKET_TYPE_MODEM) || (rcktpt_type[i] == ROCKET_TYPE_MODEMII)) {
2207 num_chan = sGetAiopNumChan(ctlp, 0);
2208 total_num_chan = num_chan;
2209 for (chan = 0; chan < num_chan; chan++)
2210 sModemReset(ctlp, chan, 1);
2212 for (chan = 0; chan < num_chan; chan++)
2213 sModemReset(ctlp, chan, 0);
2215 strcpy(rocketModel[i].modelString, "RocketModem ISA");
2217 strcpy(rocketModel[i].modelString, "RocketPort ISA");
2219 rocketModel[i].numPorts = total_num_chan;
2220 rocketModel[i].model = MODEL_ISA;
2222 printk(KERN_INFO "RocketPort ISA card #%d found at 0x%lx - %d AIOPs %s\n",
2223 i, rcktpt_io_addr[i], num_aiops, type_string);
2225 printk(KERN_INFO "Installing %s, creating /dev/ttyR%d - %ld\n",
2226 rocketModel[i].modelString,
2227 rocketModel[i].startingPortNumber,
2228 rocketModel[i].startingPortNumber +
2229 rocketModel[i].numPorts - 1);
2234 static const struct tty_operations rocket_ops = {
2238 .put_char = rp_put_char,
2239 .write_room = rp_write_room,
2240 .chars_in_buffer = rp_chars_in_buffer,
2241 .flush_buffer = rp_flush_buffer,
2243 .throttle = rp_throttle,
2244 .unthrottle = rp_unthrottle,
2245 .set_termios = rp_set_termios,
2248 .hangup = rp_hangup,
2249 .break_ctl = rp_break,
2250 .send_xchar = rp_send_xchar,
2251 .wait_until_sent = rp_wait_until_sent,
2252 .tiocmget = rp_tiocmget,
2253 .tiocmset = rp_tiocmset,
2256 static const struct tty_port_operations rocket_port_ops = {
2257 .carrier_raised = carrier_raised,
2262 * The module "startup" routine; it's run when the module is loaded.
2264 static int __init rp_init(void)
2266 int ret = -ENOMEM, pci_boards_found, isa_boards_found, i;
2268 printk(KERN_INFO "RocketPort device driver module, version %s, %s\n",
2269 ROCKET_VERSION, ROCKET_DATE);
2271 rocket_driver = alloc_tty_driver(MAX_RP_PORTS);
2276 * If board 1 is non-zero, there is at least one ISA configured. If controller is
2277 * zero, use the default controller IO address of board1 + 0x40.
2280 if (controller == 0)
2281 controller = board1 + 0x40;
2283 controller = 0; /* Used as a flag, meaning no ISA boards */
2286 /* If an ISA card is configured, reserve the 4 byte IO space for the Mudbac controller */
2287 if (controller && (!request_region(controller, 4, "Comtrol RocketPort"))) {
2288 printk(KERN_ERR "Unable to reserve IO region for first "
2289 "configured ISA RocketPort controller 0x%lx. "
2290 "Driver exiting\n", controller);
2295 /* Store ISA variable retrieved from command line or .conf file. */
2296 rcktpt_io_addr[0] = board1;
2297 rcktpt_io_addr[1] = board2;
2298 rcktpt_io_addr[2] = board3;
2299 rcktpt_io_addr[3] = board4;
2301 rcktpt_type[0] = modem1 ? ROCKET_TYPE_MODEM : ROCKET_TYPE_NORMAL;
2302 rcktpt_type[0] = pc104_1[0] ? ROCKET_TYPE_PC104 : rcktpt_type[0];
2303 rcktpt_type[1] = modem2 ? ROCKET_TYPE_MODEM : ROCKET_TYPE_NORMAL;
2304 rcktpt_type[1] = pc104_2[0] ? ROCKET_TYPE_PC104 : rcktpt_type[1];
2305 rcktpt_type[2] = modem3 ? ROCKET_TYPE_MODEM : ROCKET_TYPE_NORMAL;
2306 rcktpt_type[2] = pc104_3[0] ? ROCKET_TYPE_PC104 : rcktpt_type[2];
2307 rcktpt_type[3] = modem4 ? ROCKET_TYPE_MODEM : ROCKET_TYPE_NORMAL;
2308 rcktpt_type[3] = pc104_4[0] ? ROCKET_TYPE_PC104 : rcktpt_type[3];
2311 * Set up the tty driver structure and then register this
2312 * driver with the tty layer.
2315 rocket_driver->owner = THIS_MODULE;
2316 rocket_driver->flags = TTY_DRIVER_DYNAMIC_DEV;
2317 rocket_driver->name = "ttyR";
2318 rocket_driver->driver_name = "Comtrol RocketPort";
2319 rocket_driver->major = TTY_ROCKET_MAJOR;
2320 rocket_driver->minor_start = 0;
2321 rocket_driver->type = TTY_DRIVER_TYPE_SERIAL;
2322 rocket_driver->subtype = SERIAL_TYPE_NORMAL;
2323 rocket_driver->init_termios = tty_std_termios;
2324 rocket_driver->init_termios.c_cflag =
2325 B9600 | CS8 | CREAD | HUPCL | CLOCAL;
2326 rocket_driver->init_termios.c_ispeed = 9600;
2327 rocket_driver->init_termios.c_ospeed = 9600;
2328 #ifdef ROCKET_SOFT_FLOW
2329 rocket_driver->flags |= TTY_DRIVER_REAL_RAW;
2331 tty_set_operations(rocket_driver, &rocket_ops);
2333 ret = tty_register_driver(rocket_driver);
2335 printk(KERN_ERR "Couldn't install tty RocketPort driver\n");
2339 #ifdef ROCKET_DEBUG_OPEN
2340 printk(KERN_INFO "RocketPort driver is major %d\n", rocket_driver.major);
2344 * OK, let's probe each of the controllers looking for boards. Any boards found
2345 * will be initialized here.
2347 isa_boards_found = 0;
2348 pci_boards_found = 0;
2350 for (i = 0; i < NUM_BOARDS; i++) {
2356 if (isa_boards_found < NUM_BOARDS)
2357 pci_boards_found = init_PCI(isa_boards_found);
2360 max_board = pci_boards_found + isa_boards_found;
2362 if (max_board == 0) {
2363 printk(KERN_ERR "No rocketport ports found; unloading driver\n");
2370 tty_unregister_driver(rocket_driver);
2372 put_tty_driver(rocket_driver);
2378 static void rp_cleanup_module(void)
2383 del_timer_sync(&rocket_timer);
2385 retval = tty_unregister_driver(rocket_driver);
2387 printk(KERN_ERR "Error %d while trying to unregister "
2388 "rocketport driver\n", -retval);
2390 for (i = 0; i < MAX_RP_PORTS; i++)
2392 tty_unregister_device(rocket_driver, i);
2396 put_tty_driver(rocket_driver);
2398 for (i = 0; i < NUM_BOARDS; i++) {
2399 if (rcktpt_io_addr[i] <= 0 || is_PCI[i])
2401 release_region(rcktpt_io_addr[i], 64);
2404 release_region(controller, 4);
2407 /***************************************************************************
2408 Function: sInitController
2409 Purpose: Initialization of controller global registers and controller
2411 Call: sInitController(CtlP,CtlNum,MudbacIO,AiopIOList,AiopIOListSize,
2412 IRQNum,Frequency,PeriodicOnly)
2413 CONTROLLER_T *CtlP; Ptr to controller structure
2414 int CtlNum; Controller number
2415 ByteIO_t MudbacIO; Mudbac base I/O address.
2416 ByteIO_t *AiopIOList; List of I/O addresses for each AIOP.
2417 This list must be in the order the AIOPs will be found on the
2418 controller. Once an AIOP in the list is not found, it is
2419 assumed that there are no more AIOPs on the controller.
2420 int AiopIOListSize; Number of addresses in AiopIOList
2421 int IRQNum; Interrupt Request number. Can be any of the following:
2422 0: Disable global interrupts
2431 Byte_t Frequency: A flag identifying the frequency
2432 of the periodic interrupt, can be any one of the following:
2433 FREQ_DIS - periodic interrupt disabled
2434 FREQ_137HZ - 137 Hertz
2435 FREQ_69HZ - 69 Hertz
2436 FREQ_34HZ - 34 Hertz
2437 FREQ_17HZ - 17 Hertz
2440 If IRQNum is set to 0 the Frequency parameter is
2441 overidden, it is forced to a value of FREQ_DIS.
2442 int PeriodicOnly: 1 if all interrupts except the periodic
2443 interrupt are to be blocked.
2444 0 is both the periodic interrupt and
2445 other channel interrupts are allowed.
2446 If IRQNum is set to 0 the PeriodicOnly parameter is
2447 overidden, it is forced to a value of 0.
2448 Return: int: Number of AIOPs on the controller, or CTLID_NULL if controller
2449 initialization failed.
2452 If periodic interrupts are to be disabled but AIOP interrupts
2453 are allowed, set Frequency to FREQ_DIS and PeriodicOnly to 0.
2455 If interrupts are to be completely disabled set IRQNum to 0.
2457 Setting Frequency to FREQ_DIS and PeriodicOnly to 1 is an
2458 invalid combination.
2460 This function performs initialization of global interrupt modes,
2461 but it does not actually enable global interrupts. To enable
2462 and disable global interrupts use functions sEnGlobalInt() and
2463 sDisGlobalInt(). Enabling of global interrupts is normally not
2464 done until all other initializations are complete.
2466 Even if interrupts are globally enabled, they must also be
2467 individually enabled for each channel that is to generate
2470 Warnings: No range checking on any of the parameters is done.
2472 No context switches are allowed while executing this function.
2474 After this function all AIOPs on the controller are disabled,
2475 they can be enabled with sEnAiop().
2477 static int sInitController(CONTROLLER_T * CtlP, int CtlNum, ByteIO_t MudbacIO,
2478 ByteIO_t * AiopIOList, int AiopIOListSize,
2479 int IRQNum, Byte_t Frequency, int PeriodicOnly)
2485 CtlP->AiopIntrBits = aiop_intr_bits;
2486 CtlP->AltChanRingIndicator = 0;
2487 CtlP->CtlNum = CtlNum;
2488 CtlP->CtlID = CTLID_0001; /* controller release 1 */
2489 CtlP->BusType = isISA;
2490 CtlP->MBaseIO = MudbacIO;
2491 CtlP->MReg1IO = MudbacIO + 1;
2492 CtlP->MReg2IO = MudbacIO + 2;
2493 CtlP->MReg3IO = MudbacIO + 3;
2495 CtlP->MReg2 = 0; /* interrupt disable */
2496 CtlP->MReg3 = 0; /* no periodic interrupts */
2498 if (sIRQMap[IRQNum] == 0) { /* interrupts globally disabled */
2499 CtlP->MReg2 = 0; /* interrupt disable */
2500 CtlP->MReg3 = 0; /* no periodic interrupts */
2502 CtlP->MReg2 = sIRQMap[IRQNum]; /* set IRQ number */
2503 CtlP->MReg3 = Frequency; /* set frequency */
2504 if (PeriodicOnly) { /* periodic interrupt only */
2505 CtlP->MReg3 |= PERIODIC_ONLY;
2509 sOutB(CtlP->MReg2IO, CtlP->MReg2);
2510 sOutB(CtlP->MReg3IO, CtlP->MReg3);
2511 sControllerEOI(CtlP); /* clear EOI if warm init */
2514 for (i = done = 0; i < AiopIOListSize; i++) {
2516 CtlP->AiopIO[i] = (WordIO_t) io;
2517 CtlP->AiopIntChanIO[i] = io + _INT_CHAN;
2518 sOutB(CtlP->MReg2IO, CtlP->MReg2 | (i & 0x03)); /* AIOP index */
2519 sOutB(MudbacIO, (Byte_t) (io >> 6)); /* set up AIOP I/O in MUDBAC */
2522 sEnAiop(CtlP, i); /* enable the AIOP */
2523 CtlP->AiopID[i] = sReadAiopID(io); /* read AIOP ID */
2524 if (CtlP->AiopID[i] == AIOPID_NULL) /* if AIOP does not exist */
2525 done = 1; /* done looking for AIOPs */
2527 CtlP->AiopNumChan[i] = sReadAiopNumChan((WordIO_t) io); /* num channels in AIOP */
2528 sOutW((WordIO_t) io + _INDX_ADDR, _CLK_PRE); /* clock prescaler */
2529 sOutB(io + _INDX_DATA, sClockPrescale);
2530 CtlP->NumAiop++; /* bump count of AIOPs */
2532 sDisAiop(CtlP, i); /* disable AIOP */
2535 if (CtlP->NumAiop == 0)
2538 return (CtlP->NumAiop);
2541 /***************************************************************************
2542 Function: sPCIInitController
2543 Purpose: Initialization of controller global registers and controller
2545 Call: sPCIInitController(CtlP,CtlNum,AiopIOList,AiopIOListSize,
2546 IRQNum,Frequency,PeriodicOnly)
2547 CONTROLLER_T *CtlP; Ptr to controller structure
2548 int CtlNum; Controller number
2549 ByteIO_t *AiopIOList; List of I/O addresses for each AIOP.
2550 This list must be in the order the AIOPs will be found on the
2551 controller. Once an AIOP in the list is not found, it is
2552 assumed that there are no more AIOPs on the controller.
2553 int AiopIOListSize; Number of addresses in AiopIOList
2554 int IRQNum; Interrupt Request number. Can be any of the following:
2555 0: Disable global interrupts
2564 Byte_t Frequency: A flag identifying the frequency
2565 of the periodic interrupt, can be any one of the following:
2566 FREQ_DIS - periodic interrupt disabled
2567 FREQ_137HZ - 137 Hertz
2568 FREQ_69HZ - 69 Hertz
2569 FREQ_34HZ - 34 Hertz
2570 FREQ_17HZ - 17 Hertz
2573 If IRQNum is set to 0 the Frequency parameter is
2574 overidden, it is forced to a value of FREQ_DIS.
2575 int PeriodicOnly: 1 if all interrupts except the periodic
2576 interrupt are to be blocked.
2577 0 is both the periodic interrupt and
2578 other channel interrupts are allowed.
2579 If IRQNum is set to 0 the PeriodicOnly parameter is
2580 overidden, it is forced to a value of 0.
2581 Return: int: Number of AIOPs on the controller, or CTLID_NULL if controller
2582 initialization failed.
2585 If periodic interrupts are to be disabled but AIOP interrupts
2586 are allowed, set Frequency to FREQ_DIS and PeriodicOnly to 0.
2588 If interrupts are to be completely disabled set IRQNum to 0.
2590 Setting Frequency to FREQ_DIS and PeriodicOnly to 1 is an
2591 invalid combination.
2593 This function performs initialization of global interrupt modes,
2594 but it does not actually enable global interrupts. To enable
2595 and disable global interrupts use functions sEnGlobalInt() and
2596 sDisGlobalInt(). Enabling of global interrupts is normally not
2597 done until all other initializations are complete.
2599 Even if interrupts are globally enabled, they must also be
2600 individually enabled for each channel that is to generate
2603 Warnings: No range checking on any of the parameters is done.
2605 No context switches are allowed while executing this function.
2607 After this function all AIOPs on the controller are disabled,
2608 they can be enabled with sEnAiop().
2610 static int sPCIInitController(CONTROLLER_T * CtlP, int CtlNum,
2611 ByteIO_t * AiopIOList, int AiopIOListSize,
2612 WordIO_t ConfigIO, int IRQNum, Byte_t Frequency,
2613 int PeriodicOnly, int altChanRingIndicator,
2619 CtlP->AltChanRingIndicator = altChanRingIndicator;
2620 CtlP->UPCIRingInd = UPCIRingInd;
2621 CtlP->CtlNum = CtlNum;
2622 CtlP->CtlID = CTLID_0001; /* controller release 1 */
2623 CtlP->BusType = isPCI; /* controller release 1 */
2627 CtlP->PCIIO = ConfigIO + _PCI_9030_INT_CTRL;
2628 CtlP->PCIIO2 = ConfigIO + _PCI_9030_GPIO_CTRL;
2629 CtlP->AiopIntrBits = upci_aiop_intr_bits;
2633 (WordIO_t) ((ByteIO_t) AiopIOList[0] + _PCI_INT_FUNC);
2634 CtlP->AiopIntrBits = aiop_intr_bits;
2637 sPCIControllerEOI(CtlP); /* clear EOI if warm init */
2640 for (i = 0; i < AiopIOListSize; i++) {
2642 CtlP->AiopIO[i] = (WordIO_t) io;
2643 CtlP->AiopIntChanIO[i] = io + _INT_CHAN;
2645 CtlP->AiopID[i] = sReadAiopID(io); /* read AIOP ID */
2646 if (CtlP->AiopID[i] == AIOPID_NULL) /* if AIOP does not exist */
2647 break; /* done looking for AIOPs */
2649 CtlP->AiopNumChan[i] = sReadAiopNumChan((WordIO_t) io); /* num channels in AIOP */
2650 sOutW((WordIO_t) io + _INDX_ADDR, _CLK_PRE); /* clock prescaler */
2651 sOutB(io + _INDX_DATA, sClockPrescale);
2652 CtlP->NumAiop++; /* bump count of AIOPs */
2655 if (CtlP->NumAiop == 0)
2658 return (CtlP->NumAiop);
2661 /***************************************************************************
2662 Function: sReadAiopID
2663 Purpose: Read the AIOP idenfication number directly from an AIOP.
2664 Call: sReadAiopID(io)
2665 ByteIO_t io: AIOP base I/O address
2666 Return: int: Flag AIOPID_XXXX if a valid AIOP is found, where X
2667 is replace by an identifying number.
2668 Flag AIOPID_NULL if no valid AIOP is found
2669 Warnings: No context switches are allowed while executing this function.
2672 static int sReadAiopID(ByteIO_t io)
2674 Byte_t AiopID; /* ID byte from AIOP */
2676 sOutB(io + _CMD_REG, RESET_ALL); /* reset AIOP */
2677 sOutB(io + _CMD_REG, 0x0);
2678 AiopID = sInW(io + _CHN_STAT0) & 0x07;
2681 else /* AIOP does not exist */
2685 /***************************************************************************
2686 Function: sReadAiopNumChan
2687 Purpose: Read the number of channels available in an AIOP directly from
2689 Call: sReadAiopNumChan(io)
2690 WordIO_t io: AIOP base I/O address
2691 Return: int: The number of channels available
2692 Comments: The number of channels is determined by write/reads from identical
2693 offsets within the SRAM address spaces for channels 0 and 4.
2694 If the channel 4 space is mirrored to channel 0 it is a 4 channel
2695 AIOP, otherwise it is an 8 channel.
2696 Warnings: No context switches are allowed while executing this function.
2698 static int sReadAiopNumChan(WordIO_t io)
2701 static Byte_t R[4] = { 0x00, 0x00, 0x34, 0x12 };
2703 /* write to chan 0 SRAM */
2704 out32((DWordIO_t) io + _INDX_ADDR, R);
2705 sOutW(io + _INDX_ADDR, 0); /* read from SRAM, chan 0 */
2706 x = sInW(io + _INDX_DATA);
2707 sOutW(io + _INDX_ADDR, 0x4000); /* read from SRAM, chan 4 */
2708 if (x != sInW(io + _INDX_DATA)) /* if different must be 8 chan */
2714 /***************************************************************************
2716 Purpose: Initialization of a channel and channel structure
2717 Call: sInitChan(CtlP,ChP,AiopNum,ChanNum)
2718 CONTROLLER_T *CtlP; Ptr to controller structure
2719 CHANNEL_T *ChP; Ptr to channel structure
2720 int AiopNum; AIOP number within controller
2721 int ChanNum; Channel number within AIOP
2722 Return: int: 1 if initialization succeeded, 0 if it fails because channel
2723 number exceeds number of channels available in AIOP.
2724 Comments: This function must be called before a channel can be used.
2725 Warnings: No range checking on any of the parameters is done.
2727 No context switches are allowed while executing this function.
2729 static int sInitChan(CONTROLLER_T * CtlP, CHANNEL_T * ChP, int AiopNum,
2740 if (ChanNum >= CtlP->AiopNumChan[AiopNum])
2741 return 0; /* exceeds num chans in AIOP */
2743 /* Channel, AIOP, and controller identifiers */
2745 ChP->ChanID = CtlP->AiopID[AiopNum];
2746 ChP->AiopNum = AiopNum;
2747 ChP->ChanNum = ChanNum;
2749 /* Global direct addresses */
2750 AiopIO = CtlP->AiopIO[AiopNum];
2751 ChP->Cmd = (ByteIO_t) AiopIO + _CMD_REG;
2752 ChP->IntChan = (ByteIO_t) AiopIO + _INT_CHAN;
2753 ChP->IntMask = (ByteIO_t) AiopIO + _INT_MASK;
2754 ChP->IndexAddr = (DWordIO_t) AiopIO + _INDX_ADDR;
2755 ChP->IndexData = AiopIO + _INDX_DATA;
2757 /* Channel direct addresses */
2758 ChIOOff = AiopIO + ChP->ChanNum * 2;
2759 ChP->TxRxData = ChIOOff + _TD0;
2760 ChP->ChanStat = ChIOOff + _CHN_STAT0;
2761 ChP->TxRxCount = ChIOOff + _FIFO_CNT0;
2762 ChP->IntID = (ByteIO_t) AiopIO + ChP->ChanNum + _INT_ID0;
2764 /* Initialize the channel from the RData array */
2765 for (i = 0; i < RDATASIZE; i += 4) {
2767 R[1] = RData[i + 1] + 0x10 * ChanNum;
2768 R[2] = RData[i + 2];
2769 R[3] = RData[i + 3];
2770 out32(ChP->IndexAddr, R);
2774 for (i = 0; i < RREGDATASIZE; i += 4) {
2775 ChR[i] = RRegData[i];
2776 ChR[i + 1] = RRegData[i + 1] + 0x10 * ChanNum;
2777 ChR[i + 2] = RRegData[i + 2];
2778 ChR[i + 3] = RRegData[i + 3];
2781 /* Indexed registers */
2782 ChOff = (Word_t) ChanNum *0x1000;
2784 if (sClockPrescale == 0x14)
2789 ChP->BaudDiv[0] = (Byte_t) (ChOff + _BAUD);
2790 ChP->BaudDiv[1] = (Byte_t) ((ChOff + _BAUD) >> 8);
2791 ChP->BaudDiv[2] = (Byte_t) brd9600;
2792 ChP->BaudDiv[3] = (Byte_t) (brd9600 >> 8);
2793 out32(ChP->IndexAddr, ChP->BaudDiv);
2795 ChP->TxControl[0] = (Byte_t) (ChOff + _TX_CTRL);
2796 ChP->TxControl[1] = (Byte_t) ((ChOff + _TX_CTRL) >> 8);
2797 ChP->TxControl[2] = 0;
2798 ChP->TxControl[3] = 0;
2799 out32(ChP->IndexAddr, ChP->TxControl);
2801 ChP->RxControl[0] = (Byte_t) (ChOff + _RX_CTRL);
2802 ChP->RxControl[1] = (Byte_t) ((ChOff + _RX_CTRL) >> 8);
2803 ChP->RxControl[2] = 0;
2804 ChP->RxControl[3] = 0;
2805 out32(ChP->IndexAddr, ChP->RxControl);
2807 ChP->TxEnables[0] = (Byte_t) (ChOff + _TX_ENBLS);
2808 ChP->TxEnables[1] = (Byte_t) ((ChOff + _TX_ENBLS) >> 8);
2809 ChP->TxEnables[2] = 0;
2810 ChP->TxEnables[3] = 0;
2811 out32(ChP->IndexAddr, ChP->TxEnables);
2813 ChP->TxCompare[0] = (Byte_t) (ChOff + _TXCMP1);
2814 ChP->TxCompare[1] = (Byte_t) ((ChOff + _TXCMP1) >> 8);
2815 ChP->TxCompare[2] = 0;
2816 ChP->TxCompare[3] = 0;
2817 out32(ChP->IndexAddr, ChP->TxCompare);
2819 ChP->TxReplace1[0] = (Byte_t) (ChOff + _TXREP1B1);
2820 ChP->TxReplace1[1] = (Byte_t) ((ChOff + _TXREP1B1) >> 8);
2821 ChP->TxReplace1[2] = 0;
2822 ChP->TxReplace1[3] = 0;
2823 out32(ChP->IndexAddr, ChP->TxReplace1);
2825 ChP->TxReplace2[0] = (Byte_t) (ChOff + _TXREP2);
2826 ChP->TxReplace2[1] = (Byte_t) ((ChOff + _TXREP2) >> 8);
2827 ChP->TxReplace2[2] = 0;
2828 ChP->TxReplace2[3] = 0;
2829 out32(ChP->IndexAddr, ChP->TxReplace2);
2831 ChP->TxFIFOPtrs = ChOff + _TXF_OUTP;
2832 ChP->TxFIFO = ChOff + _TX_FIFO;
2834 sOutB(ChP->Cmd, (Byte_t) ChanNum | RESTXFCNT); /* apply reset Tx FIFO count */
2835 sOutB(ChP->Cmd, (Byte_t) ChanNum); /* remove reset Tx FIFO count */
2836 sOutW((WordIO_t) ChP->IndexAddr, ChP->TxFIFOPtrs); /* clear Tx in/out ptrs */
2837 sOutW(ChP->IndexData, 0);
2838 ChP->RxFIFOPtrs = ChOff + _RXF_OUTP;
2839 ChP->RxFIFO = ChOff + _RX_FIFO;
2841 sOutB(ChP->Cmd, (Byte_t) ChanNum | RESRXFCNT); /* apply reset Rx FIFO count */
2842 sOutB(ChP->Cmd, (Byte_t) ChanNum); /* remove reset Rx FIFO count */
2843 sOutW((WordIO_t) ChP->IndexAddr, ChP->RxFIFOPtrs); /* clear Rx out ptr */
2844 sOutW(ChP->IndexData, 0);
2845 sOutW((WordIO_t) ChP->IndexAddr, ChP->RxFIFOPtrs + 2); /* clear Rx in ptr */
2846 sOutW(ChP->IndexData, 0);
2847 ChP->TxPrioCnt = ChOff + _TXP_CNT;
2848 sOutW((WordIO_t) ChP->IndexAddr, ChP->TxPrioCnt);
2849 sOutB(ChP->IndexData, 0);
2850 ChP->TxPrioPtr = ChOff + _TXP_PNTR;
2851 sOutW((WordIO_t) ChP->IndexAddr, ChP->TxPrioPtr);
2852 sOutB(ChP->IndexData, 0);
2853 ChP->TxPrioBuf = ChOff + _TXP_BUF;
2854 sEnRxProcessor(ChP); /* start the Rx processor */
2859 /***************************************************************************
2860 Function: sStopRxProcessor
2861 Purpose: Stop the receive processor from processing a channel.
2862 Call: sStopRxProcessor(ChP)
2863 CHANNEL_T *ChP; Ptr to channel structure
2865 Comments: The receive processor can be started again with sStartRxProcessor().
2866 This function causes the receive processor to skip over the
2867 stopped channel. It does not stop it from processing other channels.
2869 Warnings: No context switches are allowed while executing this function.
2871 Do not leave the receive processor stopped for more than one
2874 After calling this function a delay of 4 uS is required to ensure
2875 that the receive processor is no longer processing this channel.
2877 static void sStopRxProcessor(CHANNEL_T * ChP)
2885 out32(ChP->IndexAddr, R);
2888 /***************************************************************************
2889 Function: sFlushRxFIFO
2890 Purpose: Flush the Rx FIFO
2891 Call: sFlushRxFIFO(ChP)
2892 CHANNEL_T *ChP; Ptr to channel structure
2894 Comments: To prevent data from being enqueued or dequeued in the Tx FIFO
2895 while it is being flushed the receive processor is stopped
2896 and the transmitter is disabled. After these operations a
2897 4 uS delay is done before clearing the pointers to allow
2898 the receive processor to stop. These items are handled inside
2900 Warnings: No context switches are allowed while executing this function.
2902 static void sFlushRxFIFO(CHANNEL_T * ChP)
2905 Byte_t Ch; /* channel number within AIOP */
2906 int RxFIFOEnabled; /* 1 if Rx FIFO enabled */
2908 if (sGetRxCnt(ChP) == 0) /* Rx FIFO empty */
2909 return; /* don't need to flush */
2912 if (ChP->R[0x32] == 0x08) { /* Rx FIFO is enabled */
2914 sDisRxFIFO(ChP); /* disable it */
2915 for (i = 0; i < 2000 / 200; i++) /* delay 2 uS to allow proc to disable FIFO */
2916 sInB(ChP->IntChan); /* depends on bus i/o timing */
2918 sGetChanStatus(ChP); /* clear any pending Rx errors in chan stat */
2919 Ch = (Byte_t) sGetChanNum(ChP);
2920 sOutB(ChP->Cmd, Ch | RESRXFCNT); /* apply reset Rx FIFO count */
2921 sOutB(ChP->Cmd, Ch); /* remove reset Rx FIFO count */
2922 sOutW((WordIO_t) ChP->IndexAddr, ChP->RxFIFOPtrs); /* clear Rx out ptr */
2923 sOutW(ChP->IndexData, 0);
2924 sOutW((WordIO_t) ChP->IndexAddr, ChP->RxFIFOPtrs + 2); /* clear Rx in ptr */
2925 sOutW(ChP->IndexData, 0);
2927 sEnRxFIFO(ChP); /* enable Rx FIFO */
2930 /***************************************************************************
2931 Function: sFlushTxFIFO
2932 Purpose: Flush the Tx FIFO
2933 Call: sFlushTxFIFO(ChP)
2934 CHANNEL_T *ChP; Ptr to channel structure
2936 Comments: To prevent data from being enqueued or dequeued in the Tx FIFO
2937 while it is being flushed the receive processor is stopped
2938 and the transmitter is disabled. After these operations a
2939 4 uS delay is done before clearing the pointers to allow
2940 the receive processor to stop. These items are handled inside
2942 Warnings: No context switches are allowed while executing this function.
2944 static void sFlushTxFIFO(CHANNEL_T * ChP)
2947 Byte_t Ch; /* channel number within AIOP */
2948 int TxEnabled; /* 1 if transmitter enabled */
2950 if (sGetTxCnt(ChP) == 0) /* Tx FIFO empty */
2951 return; /* don't need to flush */
2954 if (ChP->TxControl[3] & TX_ENABLE) {
2956 sDisTransmit(ChP); /* disable transmitter */
2958 sStopRxProcessor(ChP); /* stop Rx processor */
2959 for (i = 0; i < 4000 / 200; i++) /* delay 4 uS to allow proc to stop */
2960 sInB(ChP->IntChan); /* depends on bus i/o timing */
2961 Ch = (Byte_t) sGetChanNum(ChP);
2962 sOutB(ChP->Cmd, Ch | RESTXFCNT); /* apply reset Tx FIFO count */
2963 sOutB(ChP->Cmd, Ch); /* remove reset Tx FIFO count */
2964 sOutW((WordIO_t) ChP->IndexAddr, ChP->TxFIFOPtrs); /* clear Tx in/out ptrs */
2965 sOutW(ChP->IndexData, 0);
2967 sEnTransmit(ChP); /* enable transmitter */
2968 sStartRxProcessor(ChP); /* restart Rx processor */
2971 /***************************************************************************
2972 Function: sWriteTxPrioByte
2973 Purpose: Write a byte of priority transmit data to a channel
2974 Call: sWriteTxPrioByte(ChP,Data)
2975 CHANNEL_T *ChP; Ptr to channel structure
2976 Byte_t Data; The transmit data byte
2978 Return: int: 1 if the bytes is successfully written, otherwise 0.
2980 Comments: The priority byte is transmitted before any data in the Tx FIFO.
2982 Warnings: No context switches are allowed while executing this function.
2984 static int sWriteTxPrioByte(CHANNEL_T * ChP, Byte_t Data)
2986 Byte_t DWBuf[4]; /* buffer for double word writes */
2987 Word_t *WordPtr; /* must be far because Win SS != DS */
2988 register DWordIO_t IndexAddr;
2990 if (sGetTxCnt(ChP) > 1) { /* write it to Tx priority buffer */
2991 IndexAddr = ChP->IndexAddr;
2992 sOutW((WordIO_t) IndexAddr, ChP->TxPrioCnt); /* get priority buffer status */
2993 if (sInB((ByteIO_t) ChP->IndexData) & PRI_PEND) /* priority buffer busy */
2994 return (0); /* nothing sent */
2996 WordPtr = (Word_t *) (&DWBuf[0]);
2997 *WordPtr = ChP->TxPrioBuf; /* data byte address */
2999 DWBuf[2] = Data; /* data byte value */
3000 out32(IndexAddr, DWBuf); /* write it out */
3002 *WordPtr = ChP->TxPrioCnt; /* Tx priority count address */
3004 DWBuf[2] = PRI_PEND + 1; /* indicate 1 byte pending */
3005 DWBuf[3] = 0; /* priority buffer pointer */
3006 out32(IndexAddr, DWBuf); /* write it out */
3007 } else { /* write it to Tx FIFO */
3009 sWriteTxByte(sGetTxRxDataIO(ChP), Data);
3011 return (1); /* 1 byte sent */
3014 /***************************************************************************
3015 Function: sEnInterrupts
3016 Purpose: Enable one or more interrupts for a channel
3017 Call: sEnInterrupts(ChP,Flags)
3018 CHANNEL_T *ChP; Ptr to channel structure
3019 Word_t Flags: Interrupt enable flags, can be any combination
3020 of the following flags:
3021 TXINT_EN: Interrupt on Tx FIFO empty
3022 RXINT_EN: Interrupt on Rx FIFO at trigger level (see
3024 SRCINT_EN: Interrupt on SRC (Special Rx Condition)
3025 MCINT_EN: Interrupt on modem input change
3026 CHANINT_EN: Allow channel interrupt signal to the AIOP's
3027 Interrupt Channel Register.
3029 Comments: If an interrupt enable flag is set in Flags, that interrupt will be
3030 enabled. If an interrupt enable flag is not set in Flags, that
3031 interrupt will not be changed. Interrupts can be disabled with
3032 function sDisInterrupts().
3034 This function sets the appropriate bit for the channel in the AIOP's
3035 Interrupt Mask Register if the CHANINT_EN flag is set. This allows
3036 this channel's bit to be set in the AIOP's Interrupt Channel Register.
3038 Interrupts must also be globally enabled before channel interrupts
3039 will be passed on to the host. This is done with function
3042 In some cases it may be desirable to disable interrupts globally but
3043 enable channel interrupts. This would allow the global interrupt
3044 status register to be used to determine which AIOPs need service.
3046 static void sEnInterrupts(CHANNEL_T * ChP, Word_t Flags)
3048 Byte_t Mask; /* Interrupt Mask Register */
3050 ChP->RxControl[2] |=
3051 ((Byte_t) Flags & (RXINT_EN | SRCINT_EN | MCINT_EN));
3053 out32(ChP->IndexAddr, ChP->RxControl);
3055 ChP->TxControl[2] |= ((Byte_t) Flags & TXINT_EN);
3057 out32(ChP->IndexAddr, ChP->TxControl);
3059 if (Flags & CHANINT_EN) {
3060 Mask = sInB(ChP->IntMask) | sBitMapSetTbl[ChP->ChanNum];
3061 sOutB(ChP->IntMask, Mask);
3065 /***************************************************************************
3066 Function: sDisInterrupts
3067 Purpose: Disable one or more interrupts for a channel
3068 Call: sDisInterrupts(ChP,Flags)
3069 CHANNEL_T *ChP; Ptr to channel structure
3070 Word_t Flags: Interrupt flags, can be any combination
3071 of the following flags:
3072 TXINT_EN: Interrupt on Tx FIFO empty
3073 RXINT_EN: Interrupt on Rx FIFO at trigger level (see
3075 SRCINT_EN: Interrupt on SRC (Special Rx Condition)
3076 MCINT_EN: Interrupt on modem input change
3077 CHANINT_EN: Disable channel interrupt signal to the
3078 AIOP's Interrupt Channel Register.
3080 Comments: If an interrupt flag is set in Flags, that interrupt will be
3081 disabled. If an interrupt flag is not set in Flags, that
3082 interrupt will not be changed. Interrupts can be enabled with
3083 function sEnInterrupts().
3085 This function clears the appropriate bit for the channel in the AIOP's
3086 Interrupt Mask Register if the CHANINT_EN flag is set. This blocks
3087 this channel's bit from being set in the AIOP's Interrupt Channel
3090 static void sDisInterrupts(CHANNEL_T * ChP, Word_t Flags)
3092 Byte_t Mask; /* Interrupt Mask Register */
3094 ChP->RxControl[2] &=
3095 ~((Byte_t) Flags & (RXINT_EN | SRCINT_EN | MCINT_EN));
3096 out32(ChP->IndexAddr, ChP->RxControl);
3097 ChP->TxControl[2] &= ~((Byte_t) Flags & TXINT_EN);
3098 out32(ChP->IndexAddr, ChP->TxControl);
3100 if (Flags & CHANINT_EN) {
3101 Mask = sInB(ChP->IntMask) & sBitMapClrTbl[ChP->ChanNum];
3102 sOutB(ChP->IntMask, Mask);
3106 static void sSetInterfaceMode(CHANNEL_T * ChP, Byte_t mode)
3108 sOutB(ChP->CtlP->AiopIO[2], (mode & 0x18) | ChP->ChanNum);
3112 * Not an official SSCI function, but how to reset RocketModems.
3115 static void sModemReset(CONTROLLER_T * CtlP, int chan, int on)
3120 addr = CtlP->AiopIO[0] + 0x400;
3121 val = sInB(CtlP->MReg3IO);
3122 /* if AIOP[1] is not enabled, enable it */
3123 if ((val & 2) == 0) {
3124 val = sInB(CtlP->MReg2IO);
3125 sOutB(CtlP->MReg2IO, (val & 0xfc) | (1 & 0x03));
3126 sOutB(CtlP->MBaseIO, (unsigned char) (addr >> 6));
3132 sOutB(addr + chan, 0); /* apply or remove reset */
3137 * Not an official SSCI function, but how to reset RocketModems.
3140 static void sPCIModemReset(CONTROLLER_T * CtlP, int chan, int on)
3144 addr = CtlP->AiopIO[0] + 0x40; /* 2nd AIOP */
3147 sOutB(addr + chan, 0); /* apply or remove reset */
3150 /* Resets the speaker controller on RocketModem II and III devices */
3151 static void rmSpeakerReset(CONTROLLER_T * CtlP, unsigned long model)
3155 /* RocketModem II speaker control is at the 8th port location of offset 0x40 */
3156 if ((model == MODEL_RP4M) || (model == MODEL_RP6M)) {
3157 addr = CtlP->AiopIO[0] + 0x4F;
3161 /* RocketModem III speaker control is at the 1st port location of offset 0x80 */
3162 if ((model == MODEL_UPCI_RM3_8PORT)
3163 || (model == MODEL_UPCI_RM3_4PORT)) {
3164 addr = CtlP->AiopIO[0] + 0x88;
3169 /* Returns the line number given the controller (board), aiop and channel number */
3170 static unsigned char GetLineNumber(int ctrl, int aiop, int ch)
3172 return lineNumbers[(ctrl << 5) | (aiop << 3) | ch];
3176 * Stores the line number associated with a given controller (board), aiop
3177 * and channel number.
3178 * Returns: The line number assigned
3180 static unsigned char SetLineNumber(int ctrl, int aiop, int ch)
3182 lineNumbers[(ctrl << 5) | (aiop << 3) | ch] = nextLineNumber++;
3183 return (nextLineNumber - 1);