2 * RocketPort device driver for Linux
4 * Written by Theodore Ts'o, 1995, 1996, 1997, 1998, 1999, 2000.
6 * Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2003 by Comtrol, Inc.
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of the
11 * License, or (at your option) any later version.
13 * This program is distributed in the hope that it will be useful, but
14 * WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
24 * Kernel Synchronization:
26 * This driver has 2 kernel control paths - exception handlers (calls into the driver
27 * from user mode) and the timer bottom half (tasklet). This is a polled driver, interrupts
31 * - rp_table[], accessed through passed "info" pointers, is a global (static) array of
32 * serial port state information and the xmit_buf circular buffer. Protected by
33 * a per port spinlock.
34 * - xmit_flags[], an array of ints indexed by line (port) number, indicating that there
35 * is data to be transmitted. Protected by atomic bit operations.
36 * - rp_num_ports, int indicating number of open ports, protected by atomic operations.
38 * rp_write() and rp_write_char() functions use a per port semaphore to protect against
39 * simultaneous access to the same port by more than one process.
42 /****** Defines ******/
43 #define ROCKET_PARANOIA_CHECK
44 #define ROCKET_DISABLE_SIMUSAGE
46 #undef ROCKET_SOFT_FLOW
47 #undef ROCKET_DEBUG_OPEN
48 #undef ROCKET_DEBUG_INTR
49 #undef ROCKET_DEBUG_WRITE
50 #undef ROCKET_DEBUG_FLOW
51 #undef ROCKET_DEBUG_THROTTLE
52 #undef ROCKET_DEBUG_WAIT_UNTIL_SENT
53 #undef ROCKET_DEBUG_RECEIVE
54 #undef ROCKET_DEBUG_HANGUP
56 #undef ROCKET_DEBUG_IO
58 #define POLL_PERIOD HZ/100 /* Polling period .01 seconds (10ms) */
60 /****** Kernel includes ******/
62 #include <linux/module.h>
63 #include <linux/errno.h>
64 #include <linux/major.h>
65 #include <linux/kernel.h>
66 #include <linux/signal.h>
67 #include <linux/slab.h>
69 #include <linux/sched.h>
70 #include <linux/timer.h>
71 #include <linux/interrupt.h>
72 #include <linux/tty.h>
73 #include <linux/tty_driver.h>
74 #include <linux/tty_flip.h>
75 #include <linux/string.h>
76 #include <linux/fcntl.h>
77 #include <linux/ptrace.h>
78 #include <linux/mutex.h>
79 #include <linux/ioport.h>
80 #include <linux/delay.h>
81 #include <linux/completion.h>
82 #include <linux/wait.h>
83 #include <linux/pci.h>
84 #include <asm/uaccess.h>
85 #include <asm/atomic.h>
86 #include <asm/unaligned.h>
87 #include <linux/bitops.h>
88 #include <linux/spinlock.h>
89 #include <linux/init.h>
91 /****** RocketPort includes ******/
93 #include "rocket_int.h"
96 #define ROCKET_VERSION "2.09"
97 #define ROCKET_DATE "12-June-2003"
99 /****** RocketPort Local Variables ******/
101 static void rp_do_poll(unsigned long dummy);
103 static struct tty_driver *rocket_driver;
105 static struct rocket_version driver_version = {
106 ROCKET_VERSION, ROCKET_DATE
109 static struct r_port *rp_table[MAX_RP_PORTS]; /* The main repository of serial port state information. */
110 static unsigned int xmit_flags[NUM_BOARDS]; /* Bit significant, indicates port had data to transmit. */
111 /* eg. Bit 0 indicates port 0 has xmit data, ... */
112 static atomic_t rp_num_ports_open; /* Number of serial ports open */
113 static DEFINE_TIMER(rocket_timer, rp_do_poll, 0, 0);
115 static unsigned long board1; /* ISA addresses, retrieved from rocketport.conf */
116 static unsigned long board2;
117 static unsigned long board3;
118 static unsigned long board4;
119 static unsigned long controller;
120 static int support_low_speed;
121 static unsigned long modem1;
122 static unsigned long modem2;
123 static unsigned long modem3;
124 static unsigned long modem4;
125 static unsigned long pc104_1[8];
126 static unsigned long pc104_2[8];
127 static unsigned long pc104_3[8];
128 static unsigned long pc104_4[8];
129 static unsigned long *pc104[4] = { pc104_1, pc104_2, pc104_3, pc104_4 };
131 static int rp_baud_base[NUM_BOARDS]; /* Board config info (Someday make a per-board structure) */
132 static unsigned long rcktpt_io_addr[NUM_BOARDS];
133 static int rcktpt_type[NUM_BOARDS];
134 static int is_PCI[NUM_BOARDS];
135 static rocketModel_t rocketModel[NUM_BOARDS];
136 static int max_board;
139 * The following arrays define the interrupt bits corresponding to each AIOP.
140 * These bits are different between the ISA and regular PCI boards and the
141 * Universal PCI boards.
144 static Word_t aiop_intr_bits[AIOP_CTL_SIZE] = {
151 static Word_t upci_aiop_intr_bits[AIOP_CTL_SIZE] = {
152 UPCI_AIOP_INTR_BIT_0,
153 UPCI_AIOP_INTR_BIT_1,
154 UPCI_AIOP_INTR_BIT_2,
158 static Byte_t RData[RDATASIZE] = {
159 0x00, 0x09, 0xf6, 0x82,
160 0x02, 0x09, 0x86, 0xfb,
161 0x04, 0x09, 0x00, 0x0a,
162 0x06, 0x09, 0x01, 0x0a,
163 0x08, 0x09, 0x8a, 0x13,
164 0x0a, 0x09, 0xc5, 0x11,
165 0x0c, 0x09, 0x86, 0x85,
166 0x0e, 0x09, 0x20, 0x0a,
167 0x10, 0x09, 0x21, 0x0a,
168 0x12, 0x09, 0x41, 0xff,
169 0x14, 0x09, 0x82, 0x00,
170 0x16, 0x09, 0x82, 0x7b,
171 0x18, 0x09, 0x8a, 0x7d,
172 0x1a, 0x09, 0x88, 0x81,
173 0x1c, 0x09, 0x86, 0x7a,
174 0x1e, 0x09, 0x84, 0x81,
175 0x20, 0x09, 0x82, 0x7c,
176 0x22, 0x09, 0x0a, 0x0a
179 static Byte_t RRegData[RREGDATASIZE] = {
180 0x00, 0x09, 0xf6, 0x82, /* 00: Stop Rx processor */
181 0x08, 0x09, 0x8a, 0x13, /* 04: Tx software flow control */
182 0x0a, 0x09, 0xc5, 0x11, /* 08: XON char */
183 0x0c, 0x09, 0x86, 0x85, /* 0c: XANY */
184 0x12, 0x09, 0x41, 0xff, /* 10: Rx mask char */
185 0x14, 0x09, 0x82, 0x00, /* 14: Compare/Ignore #0 */
186 0x16, 0x09, 0x82, 0x7b, /* 18: Compare #1 */
187 0x18, 0x09, 0x8a, 0x7d, /* 1c: Compare #2 */
188 0x1a, 0x09, 0x88, 0x81, /* 20: Interrupt #1 */
189 0x1c, 0x09, 0x86, 0x7a, /* 24: Ignore/Replace #1 */
190 0x1e, 0x09, 0x84, 0x81, /* 28: Interrupt #2 */
191 0x20, 0x09, 0x82, 0x7c, /* 2c: Ignore/Replace #2 */
192 0x22, 0x09, 0x0a, 0x0a /* 30: Rx FIFO Enable */
195 static CONTROLLER_T sController[CTL_SIZE] = {
196 {-1, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, {0, 0, 0, 0},
197 {0, 0, 0, 0}, {-1, -1, -1, -1}, {0, 0, 0, 0}},
198 {-1, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, {0, 0, 0, 0},
199 {0, 0, 0, 0}, {-1, -1, -1, -1}, {0, 0, 0, 0}},
200 {-1, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, {0, 0, 0, 0},
201 {0, 0, 0, 0}, {-1, -1, -1, -1}, {0, 0, 0, 0}},
202 {-1, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, {0, 0, 0, 0},
203 {0, 0, 0, 0}, {-1, -1, -1, -1}, {0, 0, 0, 0}}
206 static Byte_t sBitMapClrTbl[8] = {
207 0xfe, 0xfd, 0xfb, 0xf7, 0xef, 0xdf, 0xbf, 0x7f
210 static Byte_t sBitMapSetTbl[8] = {
211 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80
214 static int sClockPrescale = 0x14;
217 * Line number is the ttySIx number (x), the Minor number. We
218 * assign them sequentially, starting at zero. The following
219 * array keeps track of the line number assigned to a given board/aiop/channel.
221 static unsigned char lineNumbers[MAX_RP_PORTS];
222 static unsigned long nextLineNumber;
224 /***** RocketPort Static Prototypes *********/
225 static int __init init_ISA(int i);
226 static void rp_wait_until_sent(struct tty_struct *tty, int timeout);
227 static void rp_flush_buffer(struct tty_struct *tty);
228 static void rmSpeakerReset(CONTROLLER_T * CtlP, unsigned long model);
229 static unsigned char GetLineNumber(int ctrl, int aiop, int ch);
230 static unsigned char SetLineNumber(int ctrl, int aiop, int ch);
231 static void rp_start(struct tty_struct *tty);
232 static int sInitChan(CONTROLLER_T * CtlP, CHANNEL_T * ChP, int AiopNum,
234 static void sSetInterfaceMode(CHANNEL_T * ChP, Byte_t mode);
235 static void sFlushRxFIFO(CHANNEL_T * ChP);
236 static void sFlushTxFIFO(CHANNEL_T * ChP);
237 static void sEnInterrupts(CHANNEL_T * ChP, Word_t Flags);
238 static void sDisInterrupts(CHANNEL_T * ChP, Word_t Flags);
239 static void sModemReset(CONTROLLER_T * CtlP, int chan, int on);
240 static void sPCIModemReset(CONTROLLER_T * CtlP, int chan, int on);
241 static int sWriteTxPrioByte(CHANNEL_T * ChP, Byte_t Data);
242 static int sPCIInitController(CONTROLLER_T * CtlP, int CtlNum,
243 ByteIO_t * AiopIOList, int AiopIOListSize,
244 WordIO_t ConfigIO, int IRQNum, Byte_t Frequency,
245 int PeriodicOnly, int altChanRingIndicator,
247 static int sInitController(CONTROLLER_T * CtlP, int CtlNum, ByteIO_t MudbacIO,
248 ByteIO_t * AiopIOList, int AiopIOListSize,
249 int IRQNum, Byte_t Frequency, int PeriodicOnly);
250 static int sReadAiopID(ByteIO_t io);
251 static int sReadAiopNumChan(WordIO_t io);
253 MODULE_AUTHOR("Theodore Ts'o");
254 MODULE_DESCRIPTION("Comtrol RocketPort driver");
255 module_param(board1, ulong, 0);
256 MODULE_PARM_DESC(board1, "I/O port for (ISA) board #1");
257 module_param(board2, ulong, 0);
258 MODULE_PARM_DESC(board2, "I/O port for (ISA) board #2");
259 module_param(board3, ulong, 0);
260 MODULE_PARM_DESC(board3, "I/O port for (ISA) board #3");
261 module_param(board4, ulong, 0);
262 MODULE_PARM_DESC(board4, "I/O port for (ISA) board #4");
263 module_param(controller, ulong, 0);
264 MODULE_PARM_DESC(controller, "I/O port for (ISA) rocketport controller");
265 module_param(support_low_speed, bool, 0);
266 MODULE_PARM_DESC(support_low_speed, "1 means support 50 baud, 0 means support 460400 baud");
267 module_param(modem1, ulong, 0);
268 MODULE_PARM_DESC(modem1, "1 means (ISA) board #1 is a RocketModem");
269 module_param(modem2, ulong, 0);
270 MODULE_PARM_DESC(modem2, "1 means (ISA) board #2 is a RocketModem");
271 module_param(modem3, ulong, 0);
272 MODULE_PARM_DESC(modem3, "1 means (ISA) board #3 is a RocketModem");
273 module_param(modem4, ulong, 0);
274 MODULE_PARM_DESC(modem4, "1 means (ISA) board #4 is a RocketModem");
275 module_param_array(pc104_1, ulong, NULL, 0);
276 MODULE_PARM_DESC(pc104_1, "set interface types for ISA(PC104) board #1 (e.g. pc104_1=232,232,485,485,...");
277 module_param_array(pc104_2, ulong, NULL, 0);
278 MODULE_PARM_DESC(pc104_2, "set interface types for ISA(PC104) board #2 (e.g. pc104_2=232,232,485,485,...");
279 module_param_array(pc104_3, ulong, NULL, 0);
280 MODULE_PARM_DESC(pc104_3, "set interface types for ISA(PC104) board #3 (e.g. pc104_3=232,232,485,485,...");
281 module_param_array(pc104_4, ulong, NULL, 0);
282 MODULE_PARM_DESC(pc104_4, "set interface types for ISA(PC104) board #4 (e.g. pc104_4=232,232,485,485,...");
284 static int rp_init(void);
285 static void rp_cleanup_module(void);
287 module_init(rp_init);
288 module_exit(rp_cleanup_module);
291 MODULE_LICENSE("Dual BSD/GPL");
293 /*************************************************************************/
294 /* Module code starts here */
296 static inline int rocket_paranoia_check(struct r_port *info,
299 #ifdef ROCKET_PARANOIA_CHECK
302 if (info->magic != RPORT_MAGIC) {
303 printk(KERN_WARNING "Warning: bad magic number for rocketport "
304 "struct in %s\n", routine);
312 /* Serial port receive data function. Called (from timer poll) when an AIOPIC signals
313 * that receive data is present on a serial port. Pulls data from FIFO, moves it into the
316 static void rp_do_receive(struct r_port *info,
317 struct tty_struct *tty,
318 CHANNEL_t * cp, unsigned int ChanStatus)
320 unsigned int CharNStat;
321 int ToRecv, wRecv, space;
324 ToRecv = sGetRxCnt(cp);
325 #ifdef ROCKET_DEBUG_INTR
326 printk(KERN_INFO "rp_do_receive(%d)...\n", ToRecv);
332 * if status indicates there are errored characters in the
333 * FIFO, then enter status mode (a word in FIFO holds
334 * character and status).
336 if (ChanStatus & (RXFOVERFL | RXBREAK | RXFRAME | RXPARITY)) {
337 if (!(ChanStatus & STATMODE)) {
338 #ifdef ROCKET_DEBUG_RECEIVE
339 printk(KERN_INFO "Entering STATMODE...\n");
341 ChanStatus |= STATMODE;
347 * if we previously entered status mode, then read down the
348 * FIFO one word at a time, pulling apart the character and
349 * the status. Update error counters depending on status
351 if (ChanStatus & STATMODE) {
352 #ifdef ROCKET_DEBUG_RECEIVE
353 printk(KERN_INFO "Ignore %x, read %x...\n",
354 info->ignore_status_mask, info->read_status_mask);
359 CharNStat = sInW(sGetTxRxDataIO(cp));
360 #ifdef ROCKET_DEBUG_RECEIVE
361 printk(KERN_INFO "%x...\n", CharNStat);
363 if (CharNStat & STMBREAKH)
364 CharNStat &= ~(STMFRAMEH | STMPARITYH);
365 if (CharNStat & info->ignore_status_mask) {
369 CharNStat &= info->read_status_mask;
370 if (CharNStat & STMBREAKH)
372 else if (CharNStat & STMPARITYH)
374 else if (CharNStat & STMFRAMEH)
376 else if (CharNStat & STMRCVROVRH)
380 tty_insert_flip_char(tty, CharNStat & 0xff, flag);
385 * after we've emptied the FIFO in status mode, turn
386 * status mode back off
388 if (sGetRxCnt(cp) == 0) {
389 #ifdef ROCKET_DEBUG_RECEIVE
390 printk(KERN_INFO "Status mode off.\n");
392 sDisRxStatusMode(cp);
396 * we aren't in status mode, so read down the FIFO two
397 * characters at time by doing repeated word IO
400 space = tty_prepare_flip_string(tty, &cbuf, ToRecv);
401 if (space < ToRecv) {
402 #ifdef ROCKET_DEBUG_RECEIVE
403 printk(KERN_INFO "rp_do_receive:insufficient space ToRecv=%d space=%d\n", ToRecv, space);
411 sInStrW(sGetTxRxDataIO(cp), (unsigned short *) cbuf, wRecv);
413 cbuf[ToRecv - 1] = sInB(sGetTxRxDataIO(cp));
415 /* Push the data up to the tty layer */
416 tty_flip_buffer_push(tty);
420 * Serial port transmit data function. Called from the timer polling loop as a
421 * result of a bit set in xmit_flags[], indicating data (from the tty layer) is ready
422 * to be sent out the serial port. Data is buffered in rp_table[line].xmit_buf, it is
423 * moved to the port's xmit FIFO. *info is critical data, protected by spinlocks.
425 static void rp_do_transmit(struct r_port *info)
428 CHANNEL_t *cp = &info->channel;
429 struct tty_struct *tty;
432 #ifdef ROCKET_DEBUG_INTR
433 printk(KERN_DEBUG "%s\n", __func__);
438 printk(KERN_WARNING "rp: WARNING %s called with "
439 "info->tty==NULL\n", __func__);
440 clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
444 spin_lock_irqsave(&info->slock, flags);
446 info->xmit_fifo_room = TXFIFO_SIZE - sGetTxCnt(cp);
448 /* Loop sending data to FIFO until done or FIFO full */
450 if (tty->stopped || tty->hw_stopped)
452 c = min(info->xmit_fifo_room, info->xmit_cnt);
453 c = min(c, XMIT_BUF_SIZE - info->xmit_tail);
454 if (c <= 0 || info->xmit_fifo_room <= 0)
456 sOutStrW(sGetTxRxDataIO(cp), (unsigned short *) (info->xmit_buf + info->xmit_tail), c / 2);
458 sOutB(sGetTxRxDataIO(cp), info->xmit_buf[info->xmit_tail + c - 1]);
459 info->xmit_tail += c;
460 info->xmit_tail &= XMIT_BUF_SIZE - 1;
462 info->xmit_fifo_room -= c;
463 #ifdef ROCKET_DEBUG_INTR
464 printk(KERN_INFO "tx %d chars...\n", c);
468 if (info->xmit_cnt == 0)
469 clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
471 if (info->xmit_cnt < WAKEUP_CHARS) {
473 #ifdef ROCKETPORT_HAVE_POLL_WAIT
474 wake_up_interruptible(&tty->poll_wait);
478 spin_unlock_irqrestore(&info->slock, flags);
480 #ifdef ROCKET_DEBUG_INTR
481 printk(KERN_DEBUG "(%d,%d,%d,%d)...\n", info->xmit_cnt, info->xmit_head,
482 info->xmit_tail, info->xmit_fifo_room);
487 * Called when a serial port signals it has read data in it's RX FIFO.
488 * It checks what interrupts are pending and services them, including
489 * receiving serial data.
491 static void rp_handle_port(struct r_port *info)
494 struct tty_struct *tty;
495 unsigned int IntMask, ChanStatus;
500 if ((info->flags & ROCKET_INITIALIZED) == 0) {
501 printk(KERN_WARNING "rp: WARNING: rp_handle_port called with "
502 "info->flags & NOT_INIT\n");
506 printk(KERN_WARNING "rp: WARNING: rp_handle_port called with "
507 "info->tty==NULL\n");
513 IntMask = sGetChanIntID(cp) & info->intmask;
514 #ifdef ROCKET_DEBUG_INTR
515 printk(KERN_INFO "rp_interrupt %02x...\n", IntMask);
517 ChanStatus = sGetChanStatus(cp);
518 if (IntMask & RXF_TRIG) { /* Rx FIFO trigger level */
519 rp_do_receive(info, tty, cp, ChanStatus);
521 if (IntMask & DELTA_CD) { /* CD change */
522 #if (defined(ROCKET_DEBUG_OPEN) || defined(ROCKET_DEBUG_INTR) || defined(ROCKET_DEBUG_HANGUP))
523 printk(KERN_INFO "ttyR%d CD now %s...\n", info->line,
524 (ChanStatus & CD_ACT) ? "on" : "off");
526 if (!(ChanStatus & CD_ACT) && info->cd_status) {
527 #ifdef ROCKET_DEBUG_HANGUP
528 printk(KERN_INFO "CD drop, calling hangup.\n");
532 info->cd_status = (ChanStatus & CD_ACT) ? 1 : 0;
533 wake_up_interruptible(&info->open_wait);
535 #ifdef ROCKET_DEBUG_INTR
536 if (IntMask & DELTA_CTS) { /* CTS change */
537 printk(KERN_INFO "CTS change...\n");
539 if (IntMask & DELTA_DSR) { /* DSR change */
540 printk(KERN_INFO "DSR change...\n");
546 * The top level polling routine. Repeats every 1/100 HZ (10ms).
548 static void rp_do_poll(unsigned long dummy)
551 int ctrl, aiop, ch, line;
552 unsigned int xmitmask, i;
553 unsigned int CtlMask;
554 unsigned char AiopMask;
557 /* Walk through all the boards (ctrl's) */
558 for (ctrl = 0; ctrl < max_board; ctrl++) {
559 if (rcktpt_io_addr[ctrl] <= 0)
562 /* Get a ptr to the board's control struct */
563 ctlp = sCtlNumToCtlPtr(ctrl);
565 /* Get the interrupt status from the board */
567 if (ctlp->BusType == isPCI)
568 CtlMask = sPCIGetControllerIntStatus(ctlp);
571 CtlMask = sGetControllerIntStatus(ctlp);
573 /* Check if any AIOP read bits are set */
574 for (aiop = 0; CtlMask; aiop++) {
575 bit = ctlp->AiopIntrBits[aiop];
578 AiopMask = sGetAiopIntStatus(ctlp, aiop);
580 /* Check if any port read bits are set */
581 for (ch = 0; AiopMask; AiopMask >>= 1, ch++) {
584 /* Get the line number (/dev/ttyRx number). */
585 /* Read the data from the port. */
586 line = GetLineNumber(ctrl, aiop, ch);
587 rp_handle_port(rp_table[line]);
593 xmitmask = xmit_flags[ctrl];
596 * xmit_flags contains bit-significant flags, indicating there is data
597 * to xmit on the port. Bit 0 is port 0 on this board, bit 1 is port
598 * 1, ... (32 total possible). The variable i has the aiop and ch
599 * numbers encoded in it (port 0-7 are aiop0, 8-15 are aiop1, etc).
602 for (i = 0; i < rocketModel[ctrl].numPorts; i++) {
603 if (xmitmask & (1 << i)) {
604 aiop = (i & 0x18) >> 3;
606 line = GetLineNumber(ctrl, aiop, ch);
607 rp_do_transmit(rp_table[line]);
614 * Reset the timer so we get called at the next clock tick (10ms).
616 if (atomic_read(&rp_num_ports_open))
617 mod_timer(&rocket_timer, jiffies + POLL_PERIOD);
621 * Initializes the r_port structure for a port, as well as enabling the port on
623 * Inputs: board, aiop, chan numbers
625 static void init_r_port(int board, int aiop, int chan, struct pci_dev *pci_dev)
632 /* Get the next available line number */
633 line = SetLineNumber(board, aiop, chan);
635 ctlp = sCtlNumToCtlPtr(board);
637 /* Get a r_port struct for the port, fill it in and save it globally, indexed by line number */
638 info = kzalloc(sizeof (struct r_port), GFP_KERNEL);
640 printk(KERN_ERR "Couldn't allocate info struct for line #%d\n",
645 info->magic = RPORT_MAGIC;
651 info->closing_wait = 3000;
652 info->close_delay = 50;
653 init_waitqueue_head(&info->open_wait);
654 init_completion(&info->close_wait);
655 info->flags &= ~ROCKET_MODE_MASK;
656 switch (pc104[board][line]) {
658 info->flags |= ROCKET_MODE_RS422;
661 info->flags |= ROCKET_MODE_RS485;
665 info->flags |= ROCKET_MODE_RS232;
669 info->intmask = RXF_TRIG | TXFIFO_MT | SRC_INT | DELTA_CD | DELTA_CTS | DELTA_DSR;
670 if (sInitChan(ctlp, &info->channel, aiop, chan) == 0) {
671 printk(KERN_ERR "RocketPort sInitChan(%d, %d, %d) failed!\n",
677 rocketMode = info->flags & ROCKET_MODE_MASK;
679 if ((info->flags & ROCKET_RTS_TOGGLE) || (rocketMode == ROCKET_MODE_RS485))
680 sEnRTSToggle(&info->channel);
682 sDisRTSToggle(&info->channel);
684 if (ctlp->boardType == ROCKET_TYPE_PC104) {
685 switch (rocketMode) {
686 case ROCKET_MODE_RS485:
687 sSetInterfaceMode(&info->channel, InterfaceModeRS485);
689 case ROCKET_MODE_RS422:
690 sSetInterfaceMode(&info->channel, InterfaceModeRS422);
692 case ROCKET_MODE_RS232:
694 if (info->flags & ROCKET_RTS_TOGGLE)
695 sSetInterfaceMode(&info->channel, InterfaceModeRS232T);
697 sSetInterfaceMode(&info->channel, InterfaceModeRS232);
701 spin_lock_init(&info->slock);
702 mutex_init(&info->write_mtx);
703 rp_table[line] = info;
704 tty_register_device(rocket_driver, line, pci_dev ? &pci_dev->dev :
709 * Configures a rocketport port according to its termio settings. Called from
710 * user mode into the driver (exception handler). *info CD manipulation is spinlock protected.
712 static void configure_r_port(struct r_port *info,
713 struct ktermios *old_termios)
718 int bits, baud, divisor;
720 struct ktermios *t = info->tty->termios;
725 /* Byte size and parity */
726 if ((cflag & CSIZE) == CS8) {
733 if (cflag & CSTOPB) {
740 if (cflag & PARENB) {
743 if (cflag & PARODD) {
753 baud = tty_get_baud_rate(info->tty);
756 divisor = ((rp_baud_base[info->board] + (baud >> 1)) / baud) - 1;
757 if ((divisor >= 8192 || divisor < 0) && old_termios) {
758 baud = tty_termios_baud_rate(old_termios);
761 divisor = (rp_baud_base[info->board] / baud) - 1;
763 if (divisor >= 8192 || divisor < 0) {
765 divisor = (rp_baud_base[info->board] / baud) - 1;
767 info->cps = baud / bits;
768 sSetBaud(cp, divisor);
770 /* FIXME: Should really back compute a baud rate from the divisor */
771 tty_encode_baud_rate(info->tty, baud, baud);
773 if (cflag & CRTSCTS) {
774 info->intmask |= DELTA_CTS;
777 info->intmask &= ~DELTA_CTS;
780 if (cflag & CLOCAL) {
781 info->intmask &= ~DELTA_CD;
783 spin_lock_irqsave(&info->slock, flags);
784 if (sGetChanStatus(cp) & CD_ACT)
788 info->intmask |= DELTA_CD;
789 spin_unlock_irqrestore(&info->slock, flags);
793 * Handle software flow control in the board
795 #ifdef ROCKET_SOFT_FLOW
796 if (I_IXON(info->tty)) {
797 sEnTxSoftFlowCtl(cp);
798 if (I_IXANY(info->tty)) {
803 sSetTxXONChar(cp, START_CHAR(info->tty));
804 sSetTxXOFFChar(cp, STOP_CHAR(info->tty));
806 sDisTxSoftFlowCtl(cp);
813 * Set up ignore/read mask words
815 info->read_status_mask = STMRCVROVRH | 0xFF;
816 if (I_INPCK(info->tty))
817 info->read_status_mask |= STMFRAMEH | STMPARITYH;
818 if (I_BRKINT(info->tty) || I_PARMRK(info->tty))
819 info->read_status_mask |= STMBREAKH;
822 * Characters to ignore
824 info->ignore_status_mask = 0;
825 if (I_IGNPAR(info->tty))
826 info->ignore_status_mask |= STMFRAMEH | STMPARITYH;
827 if (I_IGNBRK(info->tty)) {
828 info->ignore_status_mask |= STMBREAKH;
830 * If we're ignoring parity and break indicators,
831 * ignore overruns too. (For real raw support).
833 if (I_IGNPAR(info->tty))
834 info->ignore_status_mask |= STMRCVROVRH;
837 rocketMode = info->flags & ROCKET_MODE_MASK;
839 if ((info->flags & ROCKET_RTS_TOGGLE)
840 || (rocketMode == ROCKET_MODE_RS485))
845 sSetRTS(&info->channel);
847 if (cp->CtlP->boardType == ROCKET_TYPE_PC104) {
848 switch (rocketMode) {
849 case ROCKET_MODE_RS485:
850 sSetInterfaceMode(cp, InterfaceModeRS485);
852 case ROCKET_MODE_RS422:
853 sSetInterfaceMode(cp, InterfaceModeRS422);
855 case ROCKET_MODE_RS232:
857 if (info->flags & ROCKET_RTS_TOGGLE)
858 sSetInterfaceMode(cp, InterfaceModeRS232T);
860 sSetInterfaceMode(cp, InterfaceModeRS232);
866 /* info->count is considered critical, protected by spinlocks. */
867 static int block_til_ready(struct tty_struct *tty, struct file *filp,
870 DECLARE_WAITQUEUE(wait, current);
872 int do_clocal = 0, extra_count = 0;
876 * If the device is in the middle of being closed, then block
877 * until it's done, and then try again.
879 if (tty_hung_up_p(filp))
880 return ((info->flags & ROCKET_HUP_NOTIFY) ? -EAGAIN : -ERESTARTSYS);
881 if (info->flags & ROCKET_CLOSING) {
882 if (wait_for_completion_interruptible(&info->close_wait))
884 return ((info->flags & ROCKET_HUP_NOTIFY) ? -EAGAIN : -ERESTARTSYS);
888 * If non-blocking mode is set, or the port is not enabled,
889 * then make the check up front and then exit.
891 if ((filp->f_flags & O_NONBLOCK) || (tty->flags & (1 << TTY_IO_ERROR))) {
892 info->flags |= ROCKET_NORMAL_ACTIVE;
895 if (tty->termios->c_cflag & CLOCAL)
899 * Block waiting for the carrier detect and the line to become free. While we are in
900 * this loop, info->count is dropped by one, so that rp_close() knows when to free things.
901 * We restore it upon exit, either normal or abnormal.
904 add_wait_queue(&info->open_wait, &wait);
905 #ifdef ROCKET_DEBUG_OPEN
906 printk(KERN_INFO "block_til_ready before block: ttyR%d, count = %d\n", info->line, info->count);
908 spin_lock_irqsave(&info->slock, flags);
910 #ifdef ROCKET_DISABLE_SIMUSAGE
911 info->flags |= ROCKET_NORMAL_ACTIVE;
913 if (!tty_hung_up_p(filp)) {
918 info->blocked_open++;
920 spin_unlock_irqrestore(&info->slock, flags);
923 if (tty->termios->c_cflag & CBAUD) {
924 sSetDTR(&info->channel);
925 sSetRTS(&info->channel);
927 set_current_state(TASK_INTERRUPTIBLE);
928 if (tty_hung_up_p(filp) || !(info->flags & ROCKET_INITIALIZED)) {
929 if (info->flags & ROCKET_HUP_NOTIFY)
932 retval = -ERESTARTSYS;
935 if (!(info->flags & ROCKET_CLOSING) && (do_clocal || (sGetChanStatusLo(&info->channel) & CD_ACT)))
937 if (signal_pending(current)) {
938 retval = -ERESTARTSYS;
941 #ifdef ROCKET_DEBUG_OPEN
942 printk(KERN_INFO "block_til_ready blocking: ttyR%d, count = %d, flags=0x%0x\n",
943 info->line, info->count, info->flags);
945 schedule(); /* Don't hold spinlock here, will hang PC */
947 __set_current_state(TASK_RUNNING);
948 remove_wait_queue(&info->open_wait, &wait);
950 spin_lock_irqsave(&info->slock, flags);
954 info->blocked_open--;
956 spin_unlock_irqrestore(&info->slock, flags);
958 #ifdef ROCKET_DEBUG_OPEN
959 printk(KERN_INFO "block_til_ready after blocking: ttyR%d, count = %d\n",
960 info->line, info->count);
964 info->flags |= ROCKET_NORMAL_ACTIVE;
969 * Exception handler that opens a serial port. Creates xmit_buf storage, fills in
970 * port's r_port struct. Initializes the port hardware.
972 static int rp_open(struct tty_struct *tty, struct file *filp)
975 int line = 0, retval;
980 if ((line < 0) || (line >= MAX_RP_PORTS) || ((info = rp_table[line]) == NULL))
983 page = __get_free_page(GFP_KERNEL);
987 if (info->flags & ROCKET_CLOSING) {
988 retval = wait_for_completion_interruptible(&info->close_wait);
992 return ((info->flags & ROCKET_HUP_NOTIFY) ? -EAGAIN : -ERESTARTSYS);
996 * We must not sleep from here until the port is marked fully in use.
1001 info->xmit_buf = (unsigned char *) page;
1003 tty->driver_data = info;
1006 if (info->count++ == 0) {
1007 atomic_inc(&rp_num_ports_open);
1009 #ifdef ROCKET_DEBUG_OPEN
1010 printk(KERN_INFO "rocket mod++ = %d...\n",
1011 atomic_read(&rp_num_ports_open));
1014 #ifdef ROCKET_DEBUG_OPEN
1015 printk(KERN_INFO "rp_open ttyR%d, count=%d\n", info->line, info->count);
1019 * Info->count is now 1; so it's safe to sleep now.
1021 if ((info->flags & ROCKET_INITIALIZED) == 0) {
1022 cp = &info->channel;
1023 sSetRxTrigger(cp, TRIG_1);
1024 if (sGetChanStatus(cp) & CD_ACT)
1025 info->cd_status = 1;
1027 info->cd_status = 0;
1028 sDisRxStatusMode(cp);
1032 sEnInterrupts(cp, (TXINT_EN | MCINT_EN | RXINT_EN | SRCINT_EN | CHANINT_EN));
1033 sSetRxTrigger(cp, TRIG_1);
1036 sDisRxStatusMode(cp);
1040 sDisTxSoftFlowCtl(cp);
1045 info->flags |= ROCKET_INITIALIZED;
1048 * Set up the tty->alt_speed kludge
1050 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_HI)
1051 info->tty->alt_speed = 57600;
1052 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_VHI)
1053 info->tty->alt_speed = 115200;
1054 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_SHI)
1055 info->tty->alt_speed = 230400;
1056 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_WARP)
1057 info->tty->alt_speed = 460800;
1059 configure_r_port(info, NULL);
1060 if (tty->termios->c_cflag & CBAUD) {
1065 /* Starts (or resets) the maint polling loop */
1066 mod_timer(&rocket_timer, jiffies + POLL_PERIOD);
1068 retval = block_til_ready(tty, filp, info);
1070 #ifdef ROCKET_DEBUG_OPEN
1071 printk(KERN_INFO "rp_open returning after block_til_ready with %d\n", retval);
1079 * Exception handler that closes a serial port. info->count is considered critical.
1081 static void rp_close(struct tty_struct *tty, struct file *filp)
1083 struct r_port *info = (struct r_port *) tty->driver_data;
1084 unsigned long flags;
1088 if (rocket_paranoia_check(info, "rp_close"))
1091 #ifdef ROCKET_DEBUG_OPEN
1092 printk(KERN_INFO "rp_close ttyR%d, count = %d\n", info->line, info->count);
1095 if (tty_hung_up_p(filp))
1097 spin_lock_irqsave(&info->slock, flags);
1099 if ((tty->count == 1) && (info->count != 1)) {
1101 * Uh, oh. tty->count is 1, which means that the tty
1102 * structure will be freed. Info->count should always
1103 * be one in these conditions. If it's greater than
1104 * one, we've got real problems, since it means the
1105 * serial port won't be shutdown.
1107 printk(KERN_WARNING "rp_close: bad serial port count; "
1108 "tty->count is 1, info->count is %d\n", info->count);
1111 if (--info->count < 0) {
1112 printk(KERN_WARNING "rp_close: bad serial port count for "
1113 "ttyR%d: %d\n", info->line, info->count);
1117 spin_unlock_irqrestore(&info->slock, flags);
1120 info->flags |= ROCKET_CLOSING;
1121 spin_unlock_irqrestore(&info->slock, flags);
1123 cp = &info->channel;
1126 * Notify the line discpline to only process XON/XOFF characters
1131 * If transmission was throttled by the application request,
1132 * just flush the xmit buffer.
1134 if (tty->flow_stopped)
1135 rp_flush_buffer(tty);
1138 * Wait for the transmit buffer to clear
1140 if (info->closing_wait != ROCKET_CLOSING_WAIT_NONE)
1141 tty_wait_until_sent(tty, info->closing_wait);
1143 * Before we drop DTR, make sure the UART transmitter
1144 * has completely drained; this is especially
1145 * important if there is a transmit FIFO!
1147 timeout = (sGetTxCnt(cp) + 1) * HZ / info->cps;
1150 rp_wait_until_sent(tty, timeout);
1151 clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
1154 sDisInterrupts(cp, (TXINT_EN | MCINT_EN | RXINT_EN | SRCINT_EN | CHANINT_EN));
1156 sDisTxSoftFlowCtl(cp);
1164 rp_flush_buffer(tty);
1166 tty_ldisc_flush(tty);
1168 clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
1170 if (info->blocked_open) {
1171 if (info->close_delay) {
1172 msleep_interruptible(jiffies_to_msecs(info->close_delay));
1174 wake_up_interruptible(&info->open_wait);
1176 if (info->xmit_buf) {
1177 free_page((unsigned long) info->xmit_buf);
1178 info->xmit_buf = NULL;
1181 info->flags &= ~(ROCKET_INITIALIZED | ROCKET_CLOSING | ROCKET_NORMAL_ACTIVE);
1183 complete_all(&info->close_wait);
1184 atomic_dec(&rp_num_ports_open);
1186 #ifdef ROCKET_DEBUG_OPEN
1187 printk(KERN_INFO "rocket mod-- = %d...\n",
1188 atomic_read(&rp_num_ports_open));
1189 printk(KERN_INFO "rp_close ttyR%d complete shutdown\n", info->line);
1194 static void rp_set_termios(struct tty_struct *tty,
1195 struct ktermios *old_termios)
1197 struct r_port *info = (struct r_port *) tty->driver_data;
1201 if (rocket_paranoia_check(info, "rp_set_termios"))
1204 cflag = tty->termios->c_cflag;
1207 * This driver doesn't support CS5 or CS6
1209 if (((cflag & CSIZE) == CS5) || ((cflag & CSIZE) == CS6))
1210 tty->termios->c_cflag =
1211 ((cflag & ~CSIZE) | (old_termios->c_cflag & CSIZE));
1213 tty->termios->c_cflag &= ~CMSPAR;
1215 configure_r_port(info, old_termios);
1217 cp = &info->channel;
1219 /* Handle transition to B0 status */
1220 if ((old_termios->c_cflag & CBAUD) && !(tty->termios->c_cflag & CBAUD)) {
1225 /* Handle transition away from B0 status */
1226 if (!(old_termios->c_cflag & CBAUD) && (tty->termios->c_cflag & CBAUD)) {
1227 if (!tty->hw_stopped || !(tty->termios->c_cflag & CRTSCTS))
1232 if ((old_termios->c_cflag & CRTSCTS) && !(tty->termios->c_cflag & CRTSCTS)) {
1233 tty->hw_stopped = 0;
1238 static void rp_break(struct tty_struct *tty, int break_state)
1240 struct r_port *info = (struct r_port *) tty->driver_data;
1241 unsigned long flags;
1243 if (rocket_paranoia_check(info, "rp_break"))
1246 spin_lock_irqsave(&info->slock, flags);
1247 if (break_state == -1)
1248 sSendBreak(&info->channel);
1250 sClrBreak(&info->channel);
1251 spin_unlock_irqrestore(&info->slock, flags);
1255 * sGetChanRI used to be a macro in rocket_int.h. When the functionality for
1256 * the UPCI boards was added, it was decided to make this a function because
1257 * the macro was getting too complicated. All cases except the first one
1258 * (UPCIRingInd) are taken directly from the original macro.
1260 static int sGetChanRI(CHANNEL_T * ChP)
1262 CONTROLLER_t *CtlP = ChP->CtlP;
1263 int ChanNum = ChP->ChanNum;
1266 if (CtlP->UPCIRingInd)
1267 RingInd = !(sInB(CtlP->UPCIRingInd) & sBitMapSetTbl[ChanNum]);
1268 else if (CtlP->AltChanRingIndicator)
1269 RingInd = sInB((ByteIO_t) (ChP->ChanStat + 8)) & DSR_ACT;
1270 else if (CtlP->boardType == ROCKET_TYPE_PC104)
1271 RingInd = !(sInB(CtlP->AiopIO[3]) & sBitMapSetTbl[ChanNum]);
1276 /********************************************************************************************/
1277 /* Here are the routines used by rp_ioctl. These are all called from exception handlers. */
1280 * Returns the state of the serial modem control lines. These next 2 functions
1281 * are the way kernel versions > 2.5 handle modem control lines rather than IOCTLs.
1283 static int rp_tiocmget(struct tty_struct *tty, struct file *file)
1285 struct r_port *info = (struct r_port *)tty->driver_data;
1286 unsigned int control, result, ChanStatus;
1288 ChanStatus = sGetChanStatusLo(&info->channel);
1289 control = info->channel.TxControl[3];
1290 result = ((control & SET_RTS) ? TIOCM_RTS : 0) |
1291 ((control & SET_DTR) ? TIOCM_DTR : 0) |
1292 ((ChanStatus & CD_ACT) ? TIOCM_CAR : 0) |
1293 (sGetChanRI(&info->channel) ? TIOCM_RNG : 0) |
1294 ((ChanStatus & DSR_ACT) ? TIOCM_DSR : 0) |
1295 ((ChanStatus & CTS_ACT) ? TIOCM_CTS : 0);
1301 * Sets the modem control lines
1303 static int rp_tiocmset(struct tty_struct *tty, struct file *file,
1304 unsigned int set, unsigned int clear)
1306 struct r_port *info = (struct r_port *)tty->driver_data;
1308 if (set & TIOCM_RTS)
1309 info->channel.TxControl[3] |= SET_RTS;
1310 if (set & TIOCM_DTR)
1311 info->channel.TxControl[3] |= SET_DTR;
1312 if (clear & TIOCM_RTS)
1313 info->channel.TxControl[3] &= ~SET_RTS;
1314 if (clear & TIOCM_DTR)
1315 info->channel.TxControl[3] &= ~SET_DTR;
1317 out32(info->channel.IndexAddr, info->channel.TxControl);
1321 static int get_config(struct r_port *info, struct rocket_config __user *retinfo)
1323 struct rocket_config tmp;
1327 memset(&tmp, 0, sizeof (tmp));
1328 tmp.line = info->line;
1329 tmp.flags = info->flags;
1330 tmp.close_delay = info->close_delay;
1331 tmp.closing_wait = info->closing_wait;
1332 tmp.port = rcktpt_io_addr[(info->line >> 5) & 3];
1334 if (copy_to_user(retinfo, &tmp, sizeof (*retinfo)))
1339 static int set_config(struct r_port *info, struct rocket_config __user *new_info)
1341 struct rocket_config new_serial;
1343 if (copy_from_user(&new_serial, new_info, sizeof (new_serial)))
1346 if (!capable(CAP_SYS_ADMIN))
1348 if ((new_serial.flags & ~ROCKET_USR_MASK) != (info->flags & ~ROCKET_USR_MASK))
1350 info->flags = ((info->flags & ~ROCKET_USR_MASK) | (new_serial.flags & ROCKET_USR_MASK));
1351 configure_r_port(info, NULL);
1355 info->flags = ((info->flags & ~ROCKET_FLAGS) | (new_serial.flags & ROCKET_FLAGS));
1356 info->close_delay = new_serial.close_delay;
1357 info->closing_wait = new_serial.closing_wait;
1359 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_HI)
1360 info->tty->alt_speed = 57600;
1361 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_VHI)
1362 info->tty->alt_speed = 115200;
1363 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_SHI)
1364 info->tty->alt_speed = 230400;
1365 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_WARP)
1366 info->tty->alt_speed = 460800;
1368 configure_r_port(info, NULL);
1373 * This function fills in a rocket_ports struct with information
1374 * about what boards/ports are in the system. This info is passed
1375 * to user space. See setrocket.c where the info is used to create
1376 * the /dev/ttyRx ports.
1378 static int get_ports(struct r_port *info, struct rocket_ports __user *retports)
1380 struct rocket_ports tmp;
1385 memset(&tmp, 0, sizeof (tmp));
1386 tmp.tty_major = rocket_driver->major;
1388 for (board = 0; board < 4; board++) {
1389 tmp.rocketModel[board].model = rocketModel[board].model;
1390 strcpy(tmp.rocketModel[board].modelString, rocketModel[board].modelString);
1391 tmp.rocketModel[board].numPorts = rocketModel[board].numPorts;
1392 tmp.rocketModel[board].loadrm2 = rocketModel[board].loadrm2;
1393 tmp.rocketModel[board].startingPortNumber = rocketModel[board].startingPortNumber;
1395 if (copy_to_user(retports, &tmp, sizeof (*retports)))
1400 static int reset_rm2(struct r_port *info, void __user *arg)
1404 if (!capable(CAP_SYS_ADMIN))
1407 if (copy_from_user(&reset, arg, sizeof (int)))
1412 if (rcktpt_type[info->board] != ROCKET_TYPE_MODEMII &&
1413 rcktpt_type[info->board] != ROCKET_TYPE_MODEMIII)
1416 if (info->ctlp->BusType == isISA)
1417 sModemReset(info->ctlp, info->chan, reset);
1419 sPCIModemReset(info->ctlp, info->chan, reset);
1424 static int get_version(struct r_port *info, struct rocket_version __user *retvers)
1426 if (copy_to_user(retvers, &driver_version, sizeof (*retvers)))
1431 /* IOCTL call handler into the driver */
1432 static int rp_ioctl(struct tty_struct *tty, struct file *file,
1433 unsigned int cmd, unsigned long arg)
1435 struct r_port *info = (struct r_port *) tty->driver_data;
1436 void __user *argp = (void __user *)arg;
1439 if (cmd != RCKP_GET_PORTS && rocket_paranoia_check(info, "rp_ioctl"))
1445 case RCKP_GET_STRUCT:
1446 if (copy_to_user(argp, info, sizeof (struct r_port)))
1449 case RCKP_GET_CONFIG:
1450 ret = get_config(info, argp);
1452 case RCKP_SET_CONFIG:
1453 ret = set_config(info, argp);
1455 case RCKP_GET_PORTS:
1456 ret = get_ports(info, argp);
1458 case RCKP_RESET_RM2:
1459 ret = reset_rm2(info, argp);
1461 case RCKP_GET_VERSION:
1462 ret = get_version(info, argp);
1471 static void rp_send_xchar(struct tty_struct *tty, char ch)
1473 struct r_port *info = (struct r_port *) tty->driver_data;
1476 if (rocket_paranoia_check(info, "rp_send_xchar"))
1479 cp = &info->channel;
1481 sWriteTxPrioByte(cp, ch);
1483 sWriteTxByte(sGetTxRxDataIO(cp), ch);
1486 static void rp_throttle(struct tty_struct *tty)
1488 struct r_port *info = (struct r_port *) tty->driver_data;
1491 #ifdef ROCKET_DEBUG_THROTTLE
1492 printk(KERN_INFO "throttle %s: %d....\n", tty->name,
1493 tty->ldisc.chars_in_buffer(tty));
1496 if (rocket_paranoia_check(info, "rp_throttle"))
1499 cp = &info->channel;
1501 rp_send_xchar(tty, STOP_CHAR(tty));
1503 sClrRTS(&info->channel);
1506 static void rp_unthrottle(struct tty_struct *tty)
1508 struct r_port *info = (struct r_port *) tty->driver_data;
1510 #ifdef ROCKET_DEBUG_THROTTLE
1511 printk(KERN_INFO "unthrottle %s: %d....\n", tty->name,
1512 tty->ldisc.chars_in_buffer(tty));
1515 if (rocket_paranoia_check(info, "rp_throttle"))
1518 cp = &info->channel;
1520 rp_send_xchar(tty, START_CHAR(tty));
1522 sSetRTS(&info->channel);
1526 * ------------------------------------------------------------
1527 * rp_stop() and rp_start()
1529 * This routines are called before setting or resetting tty->stopped.
1530 * They enable or disable transmitter interrupts, as necessary.
1531 * ------------------------------------------------------------
1533 static void rp_stop(struct tty_struct *tty)
1535 struct r_port *info = (struct r_port *) tty->driver_data;
1537 #ifdef ROCKET_DEBUG_FLOW
1538 printk(KERN_INFO "stop %s: %d %d....\n", tty->name,
1539 info->xmit_cnt, info->xmit_fifo_room);
1542 if (rocket_paranoia_check(info, "rp_stop"))
1545 if (sGetTxCnt(&info->channel))
1546 sDisTransmit(&info->channel);
1549 static void rp_start(struct tty_struct *tty)
1551 struct r_port *info = (struct r_port *) tty->driver_data;
1553 #ifdef ROCKET_DEBUG_FLOW
1554 printk(KERN_INFO "start %s: %d %d....\n", tty->name,
1555 info->xmit_cnt, info->xmit_fifo_room);
1558 if (rocket_paranoia_check(info, "rp_stop"))
1561 sEnTransmit(&info->channel);
1562 set_bit((info->aiop * 8) + info->chan,
1563 (void *) &xmit_flags[info->board]);
1567 * rp_wait_until_sent() --- wait until the transmitter is empty
1569 static void rp_wait_until_sent(struct tty_struct *tty, int timeout)
1571 struct r_port *info = (struct r_port *) tty->driver_data;
1573 unsigned long orig_jiffies;
1574 int check_time, exit_time;
1577 if (rocket_paranoia_check(info, "rp_wait_until_sent"))
1580 cp = &info->channel;
1582 orig_jiffies = jiffies;
1583 #ifdef ROCKET_DEBUG_WAIT_UNTIL_SENT
1584 printk(KERN_INFO "In RP_wait_until_sent(%d) (jiff=%lu)...\n", timeout,
1586 printk(KERN_INFO "cps=%d...\n", info->cps);
1590 txcnt = sGetTxCnt(cp);
1592 if (sGetChanStatusLo(cp) & TXSHRMT)
1594 check_time = (HZ / info->cps) / 5;
1596 check_time = HZ * txcnt / info->cps;
1599 exit_time = orig_jiffies + timeout - jiffies;
1602 if (exit_time < check_time)
1603 check_time = exit_time;
1605 if (check_time == 0)
1607 #ifdef ROCKET_DEBUG_WAIT_UNTIL_SENT
1608 printk(KERN_INFO "txcnt = %d (jiff=%lu,check=%d)...\n", txcnt,
1609 jiffies, check_time);
1611 msleep_interruptible(jiffies_to_msecs(check_time));
1612 if (signal_pending(current))
1615 __set_current_state(TASK_RUNNING);
1617 #ifdef ROCKET_DEBUG_WAIT_UNTIL_SENT
1618 printk(KERN_INFO "txcnt = %d (jiff=%lu)...done\n", txcnt, jiffies);
1623 * rp_hangup() --- called by tty_hangup() when a hangup is signaled.
1625 static void rp_hangup(struct tty_struct *tty)
1628 struct r_port *info = (struct r_port *) tty->driver_data;
1630 if (rocket_paranoia_check(info, "rp_hangup"))
1633 #if (defined(ROCKET_DEBUG_OPEN) || defined(ROCKET_DEBUG_HANGUP))
1634 printk(KERN_INFO "rp_hangup of ttyR%d...\n", info->line);
1636 rp_flush_buffer(tty);
1637 if (info->flags & ROCKET_CLOSING)
1640 atomic_dec(&rp_num_ports_open);
1641 clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
1644 info->flags &= ~ROCKET_NORMAL_ACTIVE;
1647 cp = &info->channel;
1650 sDisInterrupts(cp, (TXINT_EN | MCINT_EN | RXINT_EN | SRCINT_EN | CHANINT_EN));
1652 sDisTxSoftFlowCtl(cp);
1654 info->flags &= ~ROCKET_INITIALIZED;
1656 wake_up_interruptible(&info->open_wait);
1660 * Exception handler - write char routine. The RocketPort driver uses a
1661 * double-buffering strategy, with the twist that if the in-memory CPU
1662 * buffer is empty, and there's space in the transmit FIFO, the
1663 * writing routines will write directly to transmit FIFO.
1664 * Write buffer and counters protected by spinlocks
1666 static int rp_put_char(struct tty_struct *tty, unsigned char ch)
1668 struct r_port *info = (struct r_port *) tty->driver_data;
1670 unsigned long flags;
1672 if (rocket_paranoia_check(info, "rp_put_char"))
1676 * Grab the port write mutex, locking out other processes that try to
1677 * write to this port
1679 mutex_lock(&info->write_mtx);
1681 #ifdef ROCKET_DEBUG_WRITE
1682 printk(KERN_INFO "rp_put_char %c...\n", ch);
1685 spin_lock_irqsave(&info->slock, flags);
1686 cp = &info->channel;
1688 if (!tty->stopped && !tty->hw_stopped && info->xmit_fifo_room == 0)
1689 info->xmit_fifo_room = TXFIFO_SIZE - sGetTxCnt(cp);
1691 if (tty->stopped || tty->hw_stopped || info->xmit_fifo_room == 0 || info->xmit_cnt != 0) {
1692 info->xmit_buf[info->xmit_head++] = ch;
1693 info->xmit_head &= XMIT_BUF_SIZE - 1;
1695 set_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
1697 sOutB(sGetTxRxDataIO(cp), ch);
1698 info->xmit_fifo_room--;
1700 spin_unlock_irqrestore(&info->slock, flags);
1701 mutex_unlock(&info->write_mtx);
1706 * Exception handler - write routine, called when user app writes to the device.
1707 * A per port write mutex is used to protect from another process writing to
1708 * this port at the same time. This other process could be running on the other CPU
1709 * or get control of the CPU if the copy_from_user() blocks due to a page fault (swapped out).
1710 * Spinlocks protect the info xmit members.
1712 static int rp_write(struct tty_struct *tty,
1713 const unsigned char *buf, int count)
1715 struct r_port *info = (struct r_port *) tty->driver_data;
1717 const unsigned char *b;
1719 unsigned long flags;
1721 if (count <= 0 || rocket_paranoia_check(info, "rp_write"))
1724 if (mutex_lock_interruptible(&info->write_mtx))
1725 return -ERESTARTSYS;
1727 #ifdef ROCKET_DEBUG_WRITE
1728 printk(KERN_INFO "rp_write %d chars...\n", count);
1730 cp = &info->channel;
1732 if (!tty->stopped && !tty->hw_stopped && info->xmit_fifo_room < count)
1733 info->xmit_fifo_room = TXFIFO_SIZE - sGetTxCnt(cp);
1736 * If the write queue for the port is empty, and there is FIFO space, stuff bytes
1737 * into FIFO. Use the write queue for temp storage.
1739 if (!tty->stopped && !tty->hw_stopped && info->xmit_cnt == 0 && info->xmit_fifo_room > 0) {
1740 c = min(count, info->xmit_fifo_room);
1743 /* Push data into FIFO, 2 bytes at a time */
1744 sOutStrW(sGetTxRxDataIO(cp), (unsigned short *) b, c / 2);
1746 /* If there is a byte remaining, write it */
1748 sOutB(sGetTxRxDataIO(cp), b[c - 1]);
1754 spin_lock_irqsave(&info->slock, flags);
1755 info->xmit_fifo_room -= c;
1756 spin_unlock_irqrestore(&info->slock, flags);
1759 /* If count is zero, we wrote it all and are done */
1763 /* Write remaining data into the port's xmit_buf */
1765 if (!info->tty) /* Seemingly obligatory check... */
1767 c = min(count, XMIT_BUF_SIZE - info->xmit_cnt - 1);
1768 c = min(c, XMIT_BUF_SIZE - info->xmit_head);
1773 memcpy(info->xmit_buf + info->xmit_head, b, c);
1775 spin_lock_irqsave(&info->slock, flags);
1777 (info->xmit_head + c) & (XMIT_BUF_SIZE - 1);
1778 info->xmit_cnt += c;
1779 spin_unlock_irqrestore(&info->slock, flags);
1786 if ((retval > 0) && !tty->stopped && !tty->hw_stopped)
1787 set_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
1790 if (info->xmit_cnt < WAKEUP_CHARS) {
1792 #ifdef ROCKETPORT_HAVE_POLL_WAIT
1793 wake_up_interruptible(&tty->poll_wait);
1796 mutex_unlock(&info->write_mtx);
1801 * Return the number of characters that can be sent. We estimate
1802 * only using the in-memory transmit buffer only, and ignore the
1803 * potential space in the transmit FIFO.
1805 static int rp_write_room(struct tty_struct *tty)
1807 struct r_port *info = (struct r_port *) tty->driver_data;
1810 if (rocket_paranoia_check(info, "rp_write_room"))
1813 ret = XMIT_BUF_SIZE - info->xmit_cnt - 1;
1816 #ifdef ROCKET_DEBUG_WRITE
1817 printk(KERN_INFO "rp_write_room returns %d...\n", ret);
1823 * Return the number of characters in the buffer. Again, this only
1824 * counts those characters in the in-memory transmit buffer.
1826 static int rp_chars_in_buffer(struct tty_struct *tty)
1828 struct r_port *info = (struct r_port *) tty->driver_data;
1831 if (rocket_paranoia_check(info, "rp_chars_in_buffer"))
1834 cp = &info->channel;
1836 #ifdef ROCKET_DEBUG_WRITE
1837 printk(KERN_INFO "rp_chars_in_buffer returns %d...\n", info->xmit_cnt);
1839 return info->xmit_cnt;
1843 * Flushes the TX fifo for a port, deletes data in the xmit_buf stored in the
1844 * r_port struct for the port. Note that spinlock are used to protect info members,
1845 * do not call this function if the spinlock is already held.
1847 static void rp_flush_buffer(struct tty_struct *tty)
1849 struct r_port *info = (struct r_port *) tty->driver_data;
1851 unsigned long flags;
1853 if (rocket_paranoia_check(info, "rp_flush_buffer"))
1856 spin_lock_irqsave(&info->slock, flags);
1857 info->xmit_cnt = info->xmit_head = info->xmit_tail = 0;
1858 spin_unlock_irqrestore(&info->slock, flags);
1860 #ifdef ROCKETPORT_HAVE_POLL_WAIT
1861 wake_up_interruptible(&tty->poll_wait);
1865 cp = &info->channel;
1871 static struct pci_device_id __devinitdata rocket_pci_ids[] = {
1872 { PCI_DEVICE(PCI_VENDOR_ID_RP, PCI_ANY_ID) },
1875 MODULE_DEVICE_TABLE(pci, rocket_pci_ids);
1878 * Called when a PCI card is found. Retrieves and stores model information,
1879 * init's aiopic and serial port hardware.
1880 * Inputs: i is the board number (0-n)
1882 static __init int register_PCI(int i, struct pci_dev *dev)
1884 int num_aiops, aiop, max_num_aiops, num_chan, chan;
1885 unsigned int aiopio[MAX_AIOPS_PER_BOARD];
1886 char *str, *board_type;
1890 int altChanRingIndicator = 0;
1891 int ports_per_aiop = 8;
1892 WordIO_t ConfigIO = 0;
1893 ByteIO_t UPCIRingInd = 0;
1895 if (!dev || pci_enable_device(dev))
1898 rcktpt_io_addr[i] = pci_resource_start(dev, 0);
1900 rcktpt_type[i] = ROCKET_TYPE_NORMAL;
1901 rocketModel[i].loadrm2 = 0;
1902 rocketModel[i].startingPortNumber = nextLineNumber;
1904 /* Depending on the model, set up some config variables */
1905 switch (dev->device) {
1906 case PCI_DEVICE_ID_RP4QUAD:
1910 rocketModel[i].model = MODEL_RP4QUAD;
1911 strcpy(rocketModel[i].modelString, "RocketPort 4 port w/quad cable");
1912 rocketModel[i].numPorts = 4;
1914 case PCI_DEVICE_ID_RP8OCTA:
1917 rocketModel[i].model = MODEL_RP8OCTA;
1918 strcpy(rocketModel[i].modelString, "RocketPort 8 port w/octa cable");
1919 rocketModel[i].numPorts = 8;
1921 case PCI_DEVICE_ID_URP8OCTA:
1924 rocketModel[i].model = MODEL_UPCI_RP8OCTA;
1925 strcpy(rocketModel[i].modelString, "RocketPort UPCI 8 port w/octa cable");
1926 rocketModel[i].numPorts = 8;
1928 case PCI_DEVICE_ID_RP8INTF:
1931 rocketModel[i].model = MODEL_RP8INTF;
1932 strcpy(rocketModel[i].modelString, "RocketPort 8 port w/external I/F");
1933 rocketModel[i].numPorts = 8;
1935 case PCI_DEVICE_ID_URP8INTF:
1938 rocketModel[i].model = MODEL_UPCI_RP8INTF;
1939 strcpy(rocketModel[i].modelString, "RocketPort UPCI 8 port w/external I/F");
1940 rocketModel[i].numPorts = 8;
1942 case PCI_DEVICE_ID_RP8J:
1945 rocketModel[i].model = MODEL_RP8J;
1946 strcpy(rocketModel[i].modelString, "RocketPort 8 port w/RJ11 connectors");
1947 rocketModel[i].numPorts = 8;
1949 case PCI_DEVICE_ID_RP4J:
1953 rocketModel[i].model = MODEL_RP4J;
1954 strcpy(rocketModel[i].modelString, "RocketPort 4 port w/RJ45 connectors");
1955 rocketModel[i].numPorts = 4;
1957 case PCI_DEVICE_ID_RP8SNI:
1958 str = "8 (DB78 Custom)";
1960 rocketModel[i].model = MODEL_RP8SNI;
1961 strcpy(rocketModel[i].modelString, "RocketPort 8 port w/ custom DB78");
1962 rocketModel[i].numPorts = 8;
1964 case PCI_DEVICE_ID_RP16SNI:
1965 str = "16 (DB78 Custom)";
1967 rocketModel[i].model = MODEL_RP16SNI;
1968 strcpy(rocketModel[i].modelString, "RocketPort 16 port w/ custom DB78");
1969 rocketModel[i].numPorts = 16;
1971 case PCI_DEVICE_ID_RP16INTF:
1974 rocketModel[i].model = MODEL_RP16INTF;
1975 strcpy(rocketModel[i].modelString, "RocketPort 16 port w/external I/F");
1976 rocketModel[i].numPorts = 16;
1978 case PCI_DEVICE_ID_URP16INTF:
1981 rocketModel[i].model = MODEL_UPCI_RP16INTF;
1982 strcpy(rocketModel[i].modelString, "RocketPort UPCI 16 port w/external I/F");
1983 rocketModel[i].numPorts = 16;
1985 case PCI_DEVICE_ID_CRP16INTF:
1988 rocketModel[i].model = MODEL_CPCI_RP16INTF;
1989 strcpy(rocketModel[i].modelString, "RocketPort Compact PCI 16 port w/external I/F");
1990 rocketModel[i].numPorts = 16;
1992 case PCI_DEVICE_ID_RP32INTF:
1995 rocketModel[i].model = MODEL_RP32INTF;
1996 strcpy(rocketModel[i].modelString, "RocketPort 32 port w/external I/F");
1997 rocketModel[i].numPorts = 32;
1999 case PCI_DEVICE_ID_URP32INTF:
2002 rocketModel[i].model = MODEL_UPCI_RP32INTF;
2003 strcpy(rocketModel[i].modelString, "RocketPort UPCI 32 port w/external I/F");
2004 rocketModel[i].numPorts = 32;
2006 case PCI_DEVICE_ID_RPP4:
2007 str = "Plus Quadcable";
2010 altChanRingIndicator++;
2012 rocketModel[i].model = MODEL_RPP4;
2013 strcpy(rocketModel[i].modelString, "RocketPort Plus 4 port");
2014 rocketModel[i].numPorts = 4;
2016 case PCI_DEVICE_ID_RPP8:
2017 str = "Plus Octacable";
2020 altChanRingIndicator++;
2022 rocketModel[i].model = MODEL_RPP8;
2023 strcpy(rocketModel[i].modelString, "RocketPort Plus 8 port");
2024 rocketModel[i].numPorts = 8;
2026 case PCI_DEVICE_ID_RP2_232:
2027 str = "Plus 2 (RS-232)";
2030 altChanRingIndicator++;
2032 rocketModel[i].model = MODEL_RP2_232;
2033 strcpy(rocketModel[i].modelString, "RocketPort Plus 2 port RS232");
2034 rocketModel[i].numPorts = 2;
2036 case PCI_DEVICE_ID_RP2_422:
2037 str = "Plus 2 (RS-422)";
2040 altChanRingIndicator++;
2042 rocketModel[i].model = MODEL_RP2_422;
2043 strcpy(rocketModel[i].modelString, "RocketPort Plus 2 port RS422");
2044 rocketModel[i].numPorts = 2;
2046 case PCI_DEVICE_ID_RP6M:
2052 /* If revision is 1, the rocketmodem flash must be loaded.
2053 * If it is 2 it is a "socketed" version. */
2054 if (dev->revision == 1) {
2055 rcktpt_type[i] = ROCKET_TYPE_MODEMII;
2056 rocketModel[i].loadrm2 = 1;
2058 rcktpt_type[i] = ROCKET_TYPE_MODEM;
2061 rocketModel[i].model = MODEL_RP6M;
2062 strcpy(rocketModel[i].modelString, "RocketModem 6 port");
2063 rocketModel[i].numPorts = 6;
2065 case PCI_DEVICE_ID_RP4M:
2069 if (dev->revision == 1) {
2070 rcktpt_type[i] = ROCKET_TYPE_MODEMII;
2071 rocketModel[i].loadrm2 = 1;
2073 rcktpt_type[i] = ROCKET_TYPE_MODEM;
2076 rocketModel[i].model = MODEL_RP4M;
2077 strcpy(rocketModel[i].modelString, "RocketModem 4 port");
2078 rocketModel[i].numPorts = 4;
2081 str = "(unknown/unsupported)";
2087 * Check for UPCI boards.
2090 switch (dev->device) {
2091 case PCI_DEVICE_ID_URP32INTF:
2092 case PCI_DEVICE_ID_URP8INTF:
2093 case PCI_DEVICE_ID_URP16INTF:
2094 case PCI_DEVICE_ID_CRP16INTF:
2095 case PCI_DEVICE_ID_URP8OCTA:
2096 rcktpt_io_addr[i] = pci_resource_start(dev, 2);
2097 ConfigIO = pci_resource_start(dev, 1);
2098 if (dev->device == PCI_DEVICE_ID_URP8OCTA) {
2099 UPCIRingInd = rcktpt_io_addr[i] + _PCI_9030_RING_IND;
2102 * Check for octa or quad cable.
2105 (sInW(ConfigIO + _PCI_9030_GPIO_CTRL) &
2106 PCI_GPIO_CTRL_8PORT)) {
2109 rocketModel[i].numPorts = 4;
2113 case PCI_DEVICE_ID_UPCI_RM3_8PORT:
2116 rocketModel[i].model = MODEL_UPCI_RM3_8PORT;
2117 strcpy(rocketModel[i].modelString, "RocketModem III 8 port");
2118 rocketModel[i].numPorts = 8;
2119 rcktpt_io_addr[i] = pci_resource_start(dev, 2);
2120 UPCIRingInd = rcktpt_io_addr[i] + _PCI_9030_RING_IND;
2121 ConfigIO = pci_resource_start(dev, 1);
2122 rcktpt_type[i] = ROCKET_TYPE_MODEMIII;
2124 case PCI_DEVICE_ID_UPCI_RM3_4PORT:
2127 rocketModel[i].model = MODEL_UPCI_RM3_4PORT;
2128 strcpy(rocketModel[i].modelString, "RocketModem III 4 port");
2129 rocketModel[i].numPorts = 4;
2130 rcktpt_io_addr[i] = pci_resource_start(dev, 2);
2131 UPCIRingInd = rcktpt_io_addr[i] + _PCI_9030_RING_IND;
2132 ConfigIO = pci_resource_start(dev, 1);
2133 rcktpt_type[i] = ROCKET_TYPE_MODEMIII;
2139 switch (rcktpt_type[i]) {
2140 case ROCKET_TYPE_MODEM:
2141 board_type = "RocketModem";
2143 case ROCKET_TYPE_MODEMII:
2144 board_type = "RocketModem II";
2146 case ROCKET_TYPE_MODEMIII:
2147 board_type = "RocketModem III";
2150 board_type = "RocketPort";
2155 sClockPrescale = 0x12; /* mod 2 (divide by 3) */
2156 rp_baud_base[i] = 921600;
2159 * If support_low_speed is set, use the slow clock
2160 * prescale, which supports 50 bps
2162 if (support_low_speed) {
2163 /* mod 9 (divide by 10) prescale */
2164 sClockPrescale = 0x19;
2165 rp_baud_base[i] = 230400;
2167 /* mod 4 (devide by 5) prescale */
2168 sClockPrescale = 0x14;
2169 rp_baud_base[i] = 460800;
2173 for (aiop = 0; aiop < max_num_aiops; aiop++)
2174 aiopio[aiop] = rcktpt_io_addr[i] + (aiop * 0x40);
2175 ctlp = sCtlNumToCtlPtr(i);
2176 num_aiops = sPCIInitController(ctlp, i, aiopio, max_num_aiops, ConfigIO, 0, FREQ_DIS, 0, altChanRingIndicator, UPCIRingInd);
2177 for (aiop = 0; aiop < max_num_aiops; aiop++)
2178 ctlp->AiopNumChan[aiop] = ports_per_aiop;
2180 dev_info(&dev->dev, "comtrol PCI controller #%d found at "
2181 "address %04lx, %d AIOP(s) (%s), creating ttyR%d - %ld\n",
2182 i, rcktpt_io_addr[i], num_aiops, rocketModel[i].modelString,
2183 rocketModel[i].startingPortNumber,
2184 rocketModel[i].startingPortNumber + rocketModel[i].numPorts-1);
2186 if (num_aiops <= 0) {
2187 rcktpt_io_addr[i] = 0;
2192 /* Reset the AIOPIC, init the serial ports */
2193 for (aiop = 0; aiop < num_aiops; aiop++) {
2194 sResetAiopByNum(ctlp, aiop);
2195 num_chan = ports_per_aiop;
2196 for (chan = 0; chan < num_chan; chan++)
2197 init_r_port(i, aiop, chan, dev);
2200 /* Rocket modems must be reset */
2201 if ((rcktpt_type[i] == ROCKET_TYPE_MODEM) ||
2202 (rcktpt_type[i] == ROCKET_TYPE_MODEMII) ||
2203 (rcktpt_type[i] == ROCKET_TYPE_MODEMIII)) {
2204 num_chan = ports_per_aiop;
2205 for (chan = 0; chan < num_chan; chan++)
2206 sPCIModemReset(ctlp, chan, 1);
2208 for (chan = 0; chan < num_chan; chan++)
2209 sPCIModemReset(ctlp, chan, 0);
2211 rmSpeakerReset(ctlp, rocketModel[i].model);
2217 * Probes for PCI cards, inits them if found
2218 * Input: board_found = number of ISA boards already found, or the
2219 * starting board number
2220 * Returns: Number of PCI boards found
2222 static int __init init_PCI(int boards_found)
2224 struct pci_dev *dev = NULL;
2227 /* Work through the PCI device list, pulling out ours */
2228 while ((dev = pci_get_device(PCI_VENDOR_ID_RP, PCI_ANY_ID, dev))) {
2229 if (register_PCI(count + boards_found, dev))
2235 #endif /* CONFIG_PCI */
2238 * Probes for ISA cards
2239 * Input: i = the board number to look for
2240 * Returns: 1 if board found, 0 else
2242 static int __init init_ISA(int i)
2244 int num_aiops, num_chan = 0, total_num_chan = 0;
2246 unsigned int aiopio[MAX_AIOPS_PER_BOARD];
2250 /* If io_addr is zero, no board configured */
2251 if (rcktpt_io_addr[i] == 0)
2254 /* Reserve the IO region */
2255 if (!request_region(rcktpt_io_addr[i], 64, "Comtrol RocketPort")) {
2256 printk(KERN_ERR "Unable to reserve IO region for configured "
2257 "ISA RocketPort at address 0x%lx, board not "
2258 "installed...\n", rcktpt_io_addr[i]);
2259 rcktpt_io_addr[i] = 0;
2263 ctlp = sCtlNumToCtlPtr(i);
2265 ctlp->boardType = rcktpt_type[i];
2267 switch (rcktpt_type[i]) {
2268 case ROCKET_TYPE_PC104:
2269 type_string = "(PC104)";
2271 case ROCKET_TYPE_MODEM:
2272 type_string = "(RocketModem)";
2274 case ROCKET_TYPE_MODEMII:
2275 type_string = "(RocketModem II)";
2283 * If support_low_speed is set, use the slow clock prescale,
2284 * which supports 50 bps
2286 if (support_low_speed) {
2287 sClockPrescale = 0x19; /* mod 9 (divide by 10) prescale */
2288 rp_baud_base[i] = 230400;
2290 sClockPrescale = 0x14; /* mod 4 (devide by 5) prescale */
2291 rp_baud_base[i] = 460800;
2294 for (aiop = 0; aiop < MAX_AIOPS_PER_BOARD; aiop++)
2295 aiopio[aiop] = rcktpt_io_addr[i] + (aiop * 0x400);
2297 num_aiops = sInitController(ctlp, i, controller + (i * 0x400), aiopio, MAX_AIOPS_PER_BOARD, 0, FREQ_DIS, 0);
2299 if (ctlp->boardType == ROCKET_TYPE_PC104) {
2300 sEnAiop(ctlp, 2); /* only one AIOPIC, but these */
2301 sEnAiop(ctlp, 3); /* CSels used for other stuff */
2304 /* If something went wrong initing the AIOP's release the ISA IO memory */
2305 if (num_aiops <= 0) {
2306 release_region(rcktpt_io_addr[i], 64);
2307 rcktpt_io_addr[i] = 0;
2311 rocketModel[i].startingPortNumber = nextLineNumber;
2313 for (aiop = 0; aiop < num_aiops; aiop++) {
2314 sResetAiopByNum(ctlp, aiop);
2315 sEnAiop(ctlp, aiop);
2316 num_chan = sGetAiopNumChan(ctlp, aiop);
2317 total_num_chan += num_chan;
2318 for (chan = 0; chan < num_chan; chan++)
2319 init_r_port(i, aiop, chan, NULL);
2322 if ((rcktpt_type[i] == ROCKET_TYPE_MODEM) || (rcktpt_type[i] == ROCKET_TYPE_MODEMII)) {
2323 num_chan = sGetAiopNumChan(ctlp, 0);
2324 total_num_chan = num_chan;
2325 for (chan = 0; chan < num_chan; chan++)
2326 sModemReset(ctlp, chan, 1);
2328 for (chan = 0; chan < num_chan; chan++)
2329 sModemReset(ctlp, chan, 0);
2331 strcpy(rocketModel[i].modelString, "RocketModem ISA");
2333 strcpy(rocketModel[i].modelString, "RocketPort ISA");
2335 rocketModel[i].numPorts = total_num_chan;
2336 rocketModel[i].model = MODEL_ISA;
2338 printk(KERN_INFO "RocketPort ISA card #%d found at 0x%lx - %d AIOPs %s\n",
2339 i, rcktpt_io_addr[i], num_aiops, type_string);
2341 printk(KERN_INFO "Installing %s, creating /dev/ttyR%d - %ld\n",
2342 rocketModel[i].modelString,
2343 rocketModel[i].startingPortNumber,
2344 rocketModel[i].startingPortNumber +
2345 rocketModel[i].numPorts - 1);
2350 static const struct tty_operations rocket_ops = {
2354 .put_char = rp_put_char,
2355 .write_room = rp_write_room,
2356 .chars_in_buffer = rp_chars_in_buffer,
2357 .flush_buffer = rp_flush_buffer,
2359 .throttle = rp_throttle,
2360 .unthrottle = rp_unthrottle,
2361 .set_termios = rp_set_termios,
2364 .hangup = rp_hangup,
2365 .break_ctl = rp_break,
2366 .send_xchar = rp_send_xchar,
2367 .wait_until_sent = rp_wait_until_sent,
2368 .tiocmget = rp_tiocmget,
2369 .tiocmset = rp_tiocmset,
2373 * The module "startup" routine; it's run when the module is loaded.
2375 static int __init rp_init(void)
2377 int ret = -ENOMEM, pci_boards_found, isa_boards_found, i;
2379 printk(KERN_INFO "RocketPort device driver module, version %s, %s\n",
2380 ROCKET_VERSION, ROCKET_DATE);
2382 rocket_driver = alloc_tty_driver(MAX_RP_PORTS);
2387 * If board 1 is non-zero, there is at least one ISA configured. If controller is
2388 * zero, use the default controller IO address of board1 + 0x40.
2391 if (controller == 0)
2392 controller = board1 + 0x40;
2394 controller = 0; /* Used as a flag, meaning no ISA boards */
2397 /* If an ISA card is configured, reserve the 4 byte IO space for the Mudbac controller */
2398 if (controller && (!request_region(controller, 4, "Comtrol RocketPort"))) {
2399 printk(KERN_ERR "Unable to reserve IO region for first "
2400 "configured ISA RocketPort controller 0x%lx. "
2401 "Driver exiting\n", controller);
2406 /* Store ISA variable retrieved from command line or .conf file. */
2407 rcktpt_io_addr[0] = board1;
2408 rcktpt_io_addr[1] = board2;
2409 rcktpt_io_addr[2] = board3;
2410 rcktpt_io_addr[3] = board4;
2412 rcktpt_type[0] = modem1 ? ROCKET_TYPE_MODEM : ROCKET_TYPE_NORMAL;
2413 rcktpt_type[0] = pc104_1[0] ? ROCKET_TYPE_PC104 : rcktpt_type[0];
2414 rcktpt_type[1] = modem2 ? ROCKET_TYPE_MODEM : ROCKET_TYPE_NORMAL;
2415 rcktpt_type[1] = pc104_2[0] ? ROCKET_TYPE_PC104 : rcktpt_type[1];
2416 rcktpt_type[2] = modem3 ? ROCKET_TYPE_MODEM : ROCKET_TYPE_NORMAL;
2417 rcktpt_type[2] = pc104_3[0] ? ROCKET_TYPE_PC104 : rcktpt_type[2];
2418 rcktpt_type[3] = modem4 ? ROCKET_TYPE_MODEM : ROCKET_TYPE_NORMAL;
2419 rcktpt_type[3] = pc104_4[0] ? ROCKET_TYPE_PC104 : rcktpt_type[3];
2422 * Set up the tty driver structure and then register this
2423 * driver with the tty layer.
2426 rocket_driver->owner = THIS_MODULE;
2427 rocket_driver->flags = TTY_DRIVER_DYNAMIC_DEV;
2428 rocket_driver->name = "ttyR";
2429 rocket_driver->driver_name = "Comtrol RocketPort";
2430 rocket_driver->major = TTY_ROCKET_MAJOR;
2431 rocket_driver->minor_start = 0;
2432 rocket_driver->type = TTY_DRIVER_TYPE_SERIAL;
2433 rocket_driver->subtype = SERIAL_TYPE_NORMAL;
2434 rocket_driver->init_termios = tty_std_termios;
2435 rocket_driver->init_termios.c_cflag =
2436 B9600 | CS8 | CREAD | HUPCL | CLOCAL;
2437 rocket_driver->init_termios.c_ispeed = 9600;
2438 rocket_driver->init_termios.c_ospeed = 9600;
2439 #ifdef ROCKET_SOFT_FLOW
2440 rocket_driver->flags |= TTY_DRIVER_REAL_RAW;
2442 tty_set_operations(rocket_driver, &rocket_ops);
2444 ret = tty_register_driver(rocket_driver);
2446 printk(KERN_ERR "Couldn't install tty RocketPort driver\n");
2450 #ifdef ROCKET_DEBUG_OPEN
2451 printk(KERN_INFO "RocketPort driver is major %d\n", rocket_driver.major);
2455 * OK, let's probe each of the controllers looking for boards. Any boards found
2456 * will be initialized here.
2458 isa_boards_found = 0;
2459 pci_boards_found = 0;
2461 for (i = 0; i < NUM_BOARDS; i++) {
2467 if (isa_boards_found < NUM_BOARDS)
2468 pci_boards_found = init_PCI(isa_boards_found);
2471 max_board = pci_boards_found + isa_boards_found;
2473 if (max_board == 0) {
2474 printk(KERN_ERR "No rocketport ports found; unloading driver\n");
2481 tty_unregister_driver(rocket_driver);
2483 put_tty_driver(rocket_driver);
2489 static void rp_cleanup_module(void)
2494 del_timer_sync(&rocket_timer);
2496 retval = tty_unregister_driver(rocket_driver);
2498 printk(KERN_ERR "Error %d while trying to unregister "
2499 "rocketport driver\n", -retval);
2501 for (i = 0; i < MAX_RP_PORTS; i++)
2503 tty_unregister_device(rocket_driver, i);
2507 put_tty_driver(rocket_driver);
2509 for (i = 0; i < NUM_BOARDS; i++) {
2510 if (rcktpt_io_addr[i] <= 0 || is_PCI[i])
2512 release_region(rcktpt_io_addr[i], 64);
2515 release_region(controller, 4);
2518 /***************************************************************************
2519 Function: sInitController
2520 Purpose: Initialization of controller global registers and controller
2522 Call: sInitController(CtlP,CtlNum,MudbacIO,AiopIOList,AiopIOListSize,
2523 IRQNum,Frequency,PeriodicOnly)
2524 CONTROLLER_T *CtlP; Ptr to controller structure
2525 int CtlNum; Controller number
2526 ByteIO_t MudbacIO; Mudbac base I/O address.
2527 ByteIO_t *AiopIOList; List of I/O addresses for each AIOP.
2528 This list must be in the order the AIOPs will be found on the
2529 controller. Once an AIOP in the list is not found, it is
2530 assumed that there are no more AIOPs on the controller.
2531 int AiopIOListSize; Number of addresses in AiopIOList
2532 int IRQNum; Interrupt Request number. Can be any of the following:
2533 0: Disable global interrupts
2542 Byte_t Frequency: A flag identifying the frequency
2543 of the periodic interrupt, can be any one of the following:
2544 FREQ_DIS - periodic interrupt disabled
2545 FREQ_137HZ - 137 Hertz
2546 FREQ_69HZ - 69 Hertz
2547 FREQ_34HZ - 34 Hertz
2548 FREQ_17HZ - 17 Hertz
2551 If IRQNum is set to 0 the Frequency parameter is
2552 overidden, it is forced to a value of FREQ_DIS.
2553 int PeriodicOnly: 1 if all interrupts except the periodic
2554 interrupt are to be blocked.
2555 0 is both the periodic interrupt and
2556 other channel interrupts are allowed.
2557 If IRQNum is set to 0 the PeriodicOnly parameter is
2558 overidden, it is forced to a value of 0.
2559 Return: int: Number of AIOPs on the controller, or CTLID_NULL if controller
2560 initialization failed.
2563 If periodic interrupts are to be disabled but AIOP interrupts
2564 are allowed, set Frequency to FREQ_DIS and PeriodicOnly to 0.
2566 If interrupts are to be completely disabled set IRQNum to 0.
2568 Setting Frequency to FREQ_DIS and PeriodicOnly to 1 is an
2569 invalid combination.
2571 This function performs initialization of global interrupt modes,
2572 but it does not actually enable global interrupts. To enable
2573 and disable global interrupts use functions sEnGlobalInt() and
2574 sDisGlobalInt(). Enabling of global interrupts is normally not
2575 done until all other initializations are complete.
2577 Even if interrupts are globally enabled, they must also be
2578 individually enabled for each channel that is to generate
2581 Warnings: No range checking on any of the parameters is done.
2583 No context switches are allowed while executing this function.
2585 After this function all AIOPs on the controller are disabled,
2586 they can be enabled with sEnAiop().
2588 static int sInitController(CONTROLLER_T * CtlP, int CtlNum, ByteIO_t MudbacIO,
2589 ByteIO_t * AiopIOList, int AiopIOListSize,
2590 int IRQNum, Byte_t Frequency, int PeriodicOnly)
2596 CtlP->AiopIntrBits = aiop_intr_bits;
2597 CtlP->AltChanRingIndicator = 0;
2598 CtlP->CtlNum = CtlNum;
2599 CtlP->CtlID = CTLID_0001; /* controller release 1 */
2600 CtlP->BusType = isISA;
2601 CtlP->MBaseIO = MudbacIO;
2602 CtlP->MReg1IO = MudbacIO + 1;
2603 CtlP->MReg2IO = MudbacIO + 2;
2604 CtlP->MReg3IO = MudbacIO + 3;
2606 CtlP->MReg2 = 0; /* interrupt disable */
2607 CtlP->MReg3 = 0; /* no periodic interrupts */
2609 if (sIRQMap[IRQNum] == 0) { /* interrupts globally disabled */
2610 CtlP->MReg2 = 0; /* interrupt disable */
2611 CtlP->MReg3 = 0; /* no periodic interrupts */
2613 CtlP->MReg2 = sIRQMap[IRQNum]; /* set IRQ number */
2614 CtlP->MReg3 = Frequency; /* set frequency */
2615 if (PeriodicOnly) { /* periodic interrupt only */
2616 CtlP->MReg3 |= PERIODIC_ONLY;
2620 sOutB(CtlP->MReg2IO, CtlP->MReg2);
2621 sOutB(CtlP->MReg3IO, CtlP->MReg3);
2622 sControllerEOI(CtlP); /* clear EOI if warm init */
2625 for (i = done = 0; i < AiopIOListSize; i++) {
2627 CtlP->AiopIO[i] = (WordIO_t) io;
2628 CtlP->AiopIntChanIO[i] = io + _INT_CHAN;
2629 sOutB(CtlP->MReg2IO, CtlP->MReg2 | (i & 0x03)); /* AIOP index */
2630 sOutB(MudbacIO, (Byte_t) (io >> 6)); /* set up AIOP I/O in MUDBAC */
2633 sEnAiop(CtlP, i); /* enable the AIOP */
2634 CtlP->AiopID[i] = sReadAiopID(io); /* read AIOP ID */
2635 if (CtlP->AiopID[i] == AIOPID_NULL) /* if AIOP does not exist */
2636 done = 1; /* done looking for AIOPs */
2638 CtlP->AiopNumChan[i] = sReadAiopNumChan((WordIO_t) io); /* num channels in AIOP */
2639 sOutW((WordIO_t) io + _INDX_ADDR, _CLK_PRE); /* clock prescaler */
2640 sOutB(io + _INDX_DATA, sClockPrescale);
2641 CtlP->NumAiop++; /* bump count of AIOPs */
2643 sDisAiop(CtlP, i); /* disable AIOP */
2646 if (CtlP->NumAiop == 0)
2649 return (CtlP->NumAiop);
2652 /***************************************************************************
2653 Function: sPCIInitController
2654 Purpose: Initialization of controller global registers and controller
2656 Call: sPCIInitController(CtlP,CtlNum,AiopIOList,AiopIOListSize,
2657 IRQNum,Frequency,PeriodicOnly)
2658 CONTROLLER_T *CtlP; Ptr to controller structure
2659 int CtlNum; Controller number
2660 ByteIO_t *AiopIOList; List of I/O addresses for each AIOP.
2661 This list must be in the order the AIOPs will be found on the
2662 controller. Once an AIOP in the list is not found, it is
2663 assumed that there are no more AIOPs on the controller.
2664 int AiopIOListSize; Number of addresses in AiopIOList
2665 int IRQNum; Interrupt Request number. Can be any of the following:
2666 0: Disable global interrupts
2675 Byte_t Frequency: A flag identifying the frequency
2676 of the periodic interrupt, can be any one of the following:
2677 FREQ_DIS - periodic interrupt disabled
2678 FREQ_137HZ - 137 Hertz
2679 FREQ_69HZ - 69 Hertz
2680 FREQ_34HZ - 34 Hertz
2681 FREQ_17HZ - 17 Hertz
2684 If IRQNum is set to 0 the Frequency parameter is
2685 overidden, it is forced to a value of FREQ_DIS.
2686 int PeriodicOnly: 1 if all interrupts except the periodic
2687 interrupt are to be blocked.
2688 0 is both the periodic interrupt and
2689 other channel interrupts are allowed.
2690 If IRQNum is set to 0 the PeriodicOnly parameter is
2691 overidden, it is forced to a value of 0.
2692 Return: int: Number of AIOPs on the controller, or CTLID_NULL if controller
2693 initialization failed.
2696 If periodic interrupts are to be disabled but AIOP interrupts
2697 are allowed, set Frequency to FREQ_DIS and PeriodicOnly to 0.
2699 If interrupts are to be completely disabled set IRQNum to 0.
2701 Setting Frequency to FREQ_DIS and PeriodicOnly to 1 is an
2702 invalid combination.
2704 This function performs initialization of global interrupt modes,
2705 but it does not actually enable global interrupts. To enable
2706 and disable global interrupts use functions sEnGlobalInt() and
2707 sDisGlobalInt(). Enabling of global interrupts is normally not
2708 done until all other initializations are complete.
2710 Even if interrupts are globally enabled, they must also be
2711 individually enabled for each channel that is to generate
2714 Warnings: No range checking on any of the parameters is done.
2716 No context switches are allowed while executing this function.
2718 After this function all AIOPs on the controller are disabled,
2719 they can be enabled with sEnAiop().
2721 static int sPCIInitController(CONTROLLER_T * CtlP, int CtlNum,
2722 ByteIO_t * AiopIOList, int AiopIOListSize,
2723 WordIO_t ConfigIO, int IRQNum, Byte_t Frequency,
2724 int PeriodicOnly, int altChanRingIndicator,
2730 CtlP->AltChanRingIndicator = altChanRingIndicator;
2731 CtlP->UPCIRingInd = UPCIRingInd;
2732 CtlP->CtlNum = CtlNum;
2733 CtlP->CtlID = CTLID_0001; /* controller release 1 */
2734 CtlP->BusType = isPCI; /* controller release 1 */
2738 CtlP->PCIIO = ConfigIO + _PCI_9030_INT_CTRL;
2739 CtlP->PCIIO2 = ConfigIO + _PCI_9030_GPIO_CTRL;
2740 CtlP->AiopIntrBits = upci_aiop_intr_bits;
2744 (WordIO_t) ((ByteIO_t) AiopIOList[0] + _PCI_INT_FUNC);
2745 CtlP->AiopIntrBits = aiop_intr_bits;
2748 sPCIControllerEOI(CtlP); /* clear EOI if warm init */
2751 for (i = 0; i < AiopIOListSize; i++) {
2753 CtlP->AiopIO[i] = (WordIO_t) io;
2754 CtlP->AiopIntChanIO[i] = io + _INT_CHAN;
2756 CtlP->AiopID[i] = sReadAiopID(io); /* read AIOP ID */
2757 if (CtlP->AiopID[i] == AIOPID_NULL) /* if AIOP does not exist */
2758 break; /* done looking for AIOPs */
2760 CtlP->AiopNumChan[i] = sReadAiopNumChan((WordIO_t) io); /* num channels in AIOP */
2761 sOutW((WordIO_t) io + _INDX_ADDR, _CLK_PRE); /* clock prescaler */
2762 sOutB(io + _INDX_DATA, sClockPrescale);
2763 CtlP->NumAiop++; /* bump count of AIOPs */
2766 if (CtlP->NumAiop == 0)
2769 return (CtlP->NumAiop);
2772 /***************************************************************************
2773 Function: sReadAiopID
2774 Purpose: Read the AIOP idenfication number directly from an AIOP.
2775 Call: sReadAiopID(io)
2776 ByteIO_t io: AIOP base I/O address
2777 Return: int: Flag AIOPID_XXXX if a valid AIOP is found, where X
2778 is replace by an identifying number.
2779 Flag AIOPID_NULL if no valid AIOP is found
2780 Warnings: No context switches are allowed while executing this function.
2783 static int sReadAiopID(ByteIO_t io)
2785 Byte_t AiopID; /* ID byte from AIOP */
2787 sOutB(io + _CMD_REG, RESET_ALL); /* reset AIOP */
2788 sOutB(io + _CMD_REG, 0x0);
2789 AiopID = sInW(io + _CHN_STAT0) & 0x07;
2792 else /* AIOP does not exist */
2796 /***************************************************************************
2797 Function: sReadAiopNumChan
2798 Purpose: Read the number of channels available in an AIOP directly from
2800 Call: sReadAiopNumChan(io)
2801 WordIO_t io: AIOP base I/O address
2802 Return: int: The number of channels available
2803 Comments: The number of channels is determined by write/reads from identical
2804 offsets within the SRAM address spaces for channels 0 and 4.
2805 If the channel 4 space is mirrored to channel 0 it is a 4 channel
2806 AIOP, otherwise it is an 8 channel.
2807 Warnings: No context switches are allowed while executing this function.
2809 static int sReadAiopNumChan(WordIO_t io)
2812 static Byte_t R[4] = { 0x00, 0x00, 0x34, 0x12 };
2814 /* write to chan 0 SRAM */
2815 out32((DWordIO_t) io + _INDX_ADDR, R);
2816 sOutW(io + _INDX_ADDR, 0); /* read from SRAM, chan 0 */
2817 x = sInW(io + _INDX_DATA);
2818 sOutW(io + _INDX_ADDR, 0x4000); /* read from SRAM, chan 4 */
2819 if (x != sInW(io + _INDX_DATA)) /* if different must be 8 chan */
2825 /***************************************************************************
2827 Purpose: Initialization of a channel and channel structure
2828 Call: sInitChan(CtlP,ChP,AiopNum,ChanNum)
2829 CONTROLLER_T *CtlP; Ptr to controller structure
2830 CHANNEL_T *ChP; Ptr to channel structure
2831 int AiopNum; AIOP number within controller
2832 int ChanNum; Channel number within AIOP
2833 Return: int: 1 if initialization succeeded, 0 if it fails because channel
2834 number exceeds number of channels available in AIOP.
2835 Comments: This function must be called before a channel can be used.
2836 Warnings: No range checking on any of the parameters is done.
2838 No context switches are allowed while executing this function.
2840 static int sInitChan(CONTROLLER_T * CtlP, CHANNEL_T * ChP, int AiopNum,
2851 if (ChanNum >= CtlP->AiopNumChan[AiopNum])
2852 return 0; /* exceeds num chans in AIOP */
2854 /* Channel, AIOP, and controller identifiers */
2856 ChP->ChanID = CtlP->AiopID[AiopNum];
2857 ChP->AiopNum = AiopNum;
2858 ChP->ChanNum = ChanNum;
2860 /* Global direct addresses */
2861 AiopIO = CtlP->AiopIO[AiopNum];
2862 ChP->Cmd = (ByteIO_t) AiopIO + _CMD_REG;
2863 ChP->IntChan = (ByteIO_t) AiopIO + _INT_CHAN;
2864 ChP->IntMask = (ByteIO_t) AiopIO + _INT_MASK;
2865 ChP->IndexAddr = (DWordIO_t) AiopIO + _INDX_ADDR;
2866 ChP->IndexData = AiopIO + _INDX_DATA;
2868 /* Channel direct addresses */
2869 ChIOOff = AiopIO + ChP->ChanNum * 2;
2870 ChP->TxRxData = ChIOOff + _TD0;
2871 ChP->ChanStat = ChIOOff + _CHN_STAT0;
2872 ChP->TxRxCount = ChIOOff + _FIFO_CNT0;
2873 ChP->IntID = (ByteIO_t) AiopIO + ChP->ChanNum + _INT_ID0;
2875 /* Initialize the channel from the RData array */
2876 for (i = 0; i < RDATASIZE; i += 4) {
2878 R[1] = RData[i + 1] + 0x10 * ChanNum;
2879 R[2] = RData[i + 2];
2880 R[3] = RData[i + 3];
2881 out32(ChP->IndexAddr, R);
2885 for (i = 0; i < RREGDATASIZE; i += 4) {
2886 ChR[i] = RRegData[i];
2887 ChR[i + 1] = RRegData[i + 1] + 0x10 * ChanNum;
2888 ChR[i + 2] = RRegData[i + 2];
2889 ChR[i + 3] = RRegData[i + 3];
2892 /* Indexed registers */
2893 ChOff = (Word_t) ChanNum *0x1000;
2895 if (sClockPrescale == 0x14)
2900 ChP->BaudDiv[0] = (Byte_t) (ChOff + _BAUD);
2901 ChP->BaudDiv[1] = (Byte_t) ((ChOff + _BAUD) >> 8);
2902 ChP->BaudDiv[2] = (Byte_t) brd9600;
2903 ChP->BaudDiv[3] = (Byte_t) (brd9600 >> 8);
2904 out32(ChP->IndexAddr, ChP->BaudDiv);
2906 ChP->TxControl[0] = (Byte_t) (ChOff + _TX_CTRL);
2907 ChP->TxControl[1] = (Byte_t) ((ChOff + _TX_CTRL) >> 8);
2908 ChP->TxControl[2] = 0;
2909 ChP->TxControl[3] = 0;
2910 out32(ChP->IndexAddr, ChP->TxControl);
2912 ChP->RxControl[0] = (Byte_t) (ChOff + _RX_CTRL);
2913 ChP->RxControl[1] = (Byte_t) ((ChOff + _RX_CTRL) >> 8);
2914 ChP->RxControl[2] = 0;
2915 ChP->RxControl[3] = 0;
2916 out32(ChP->IndexAddr, ChP->RxControl);
2918 ChP->TxEnables[0] = (Byte_t) (ChOff + _TX_ENBLS);
2919 ChP->TxEnables[1] = (Byte_t) ((ChOff + _TX_ENBLS) >> 8);
2920 ChP->TxEnables[2] = 0;
2921 ChP->TxEnables[3] = 0;
2922 out32(ChP->IndexAddr, ChP->TxEnables);
2924 ChP->TxCompare[0] = (Byte_t) (ChOff + _TXCMP1);
2925 ChP->TxCompare[1] = (Byte_t) ((ChOff + _TXCMP1) >> 8);
2926 ChP->TxCompare[2] = 0;
2927 ChP->TxCompare[3] = 0;
2928 out32(ChP->IndexAddr, ChP->TxCompare);
2930 ChP->TxReplace1[0] = (Byte_t) (ChOff + _TXREP1B1);
2931 ChP->TxReplace1[1] = (Byte_t) ((ChOff + _TXREP1B1) >> 8);
2932 ChP->TxReplace1[2] = 0;
2933 ChP->TxReplace1[3] = 0;
2934 out32(ChP->IndexAddr, ChP->TxReplace1);
2936 ChP->TxReplace2[0] = (Byte_t) (ChOff + _TXREP2);
2937 ChP->TxReplace2[1] = (Byte_t) ((ChOff + _TXREP2) >> 8);
2938 ChP->TxReplace2[2] = 0;
2939 ChP->TxReplace2[3] = 0;
2940 out32(ChP->IndexAddr, ChP->TxReplace2);
2942 ChP->TxFIFOPtrs = ChOff + _TXF_OUTP;
2943 ChP->TxFIFO = ChOff + _TX_FIFO;
2945 sOutB(ChP->Cmd, (Byte_t) ChanNum | RESTXFCNT); /* apply reset Tx FIFO count */
2946 sOutB(ChP->Cmd, (Byte_t) ChanNum); /* remove reset Tx FIFO count */
2947 sOutW((WordIO_t) ChP->IndexAddr, ChP->TxFIFOPtrs); /* clear Tx in/out ptrs */
2948 sOutW(ChP->IndexData, 0);
2949 ChP->RxFIFOPtrs = ChOff + _RXF_OUTP;
2950 ChP->RxFIFO = ChOff + _RX_FIFO;
2952 sOutB(ChP->Cmd, (Byte_t) ChanNum | RESRXFCNT); /* apply reset Rx FIFO count */
2953 sOutB(ChP->Cmd, (Byte_t) ChanNum); /* remove reset Rx FIFO count */
2954 sOutW((WordIO_t) ChP->IndexAddr, ChP->RxFIFOPtrs); /* clear Rx out ptr */
2955 sOutW(ChP->IndexData, 0);
2956 sOutW((WordIO_t) ChP->IndexAddr, ChP->RxFIFOPtrs + 2); /* clear Rx in ptr */
2957 sOutW(ChP->IndexData, 0);
2958 ChP->TxPrioCnt = ChOff + _TXP_CNT;
2959 sOutW((WordIO_t) ChP->IndexAddr, ChP->TxPrioCnt);
2960 sOutB(ChP->IndexData, 0);
2961 ChP->TxPrioPtr = ChOff + _TXP_PNTR;
2962 sOutW((WordIO_t) ChP->IndexAddr, ChP->TxPrioPtr);
2963 sOutB(ChP->IndexData, 0);
2964 ChP->TxPrioBuf = ChOff + _TXP_BUF;
2965 sEnRxProcessor(ChP); /* start the Rx processor */
2970 /***************************************************************************
2971 Function: sStopRxProcessor
2972 Purpose: Stop the receive processor from processing a channel.
2973 Call: sStopRxProcessor(ChP)
2974 CHANNEL_T *ChP; Ptr to channel structure
2976 Comments: The receive processor can be started again with sStartRxProcessor().
2977 This function causes the receive processor to skip over the
2978 stopped channel. It does not stop it from processing other channels.
2980 Warnings: No context switches are allowed while executing this function.
2982 Do not leave the receive processor stopped for more than one
2985 After calling this function a delay of 4 uS is required to ensure
2986 that the receive processor is no longer processing this channel.
2988 static void sStopRxProcessor(CHANNEL_T * ChP)
2996 out32(ChP->IndexAddr, R);
2999 /***************************************************************************
3000 Function: sFlushRxFIFO
3001 Purpose: Flush the Rx FIFO
3002 Call: sFlushRxFIFO(ChP)
3003 CHANNEL_T *ChP; Ptr to channel structure
3005 Comments: To prevent data from being enqueued or dequeued in the Tx FIFO
3006 while it is being flushed the receive processor is stopped
3007 and the transmitter is disabled. After these operations a
3008 4 uS delay is done before clearing the pointers to allow
3009 the receive processor to stop. These items are handled inside
3011 Warnings: No context switches are allowed while executing this function.
3013 static void sFlushRxFIFO(CHANNEL_T * ChP)
3016 Byte_t Ch; /* channel number within AIOP */
3017 int RxFIFOEnabled; /* 1 if Rx FIFO enabled */
3019 if (sGetRxCnt(ChP) == 0) /* Rx FIFO empty */
3020 return; /* don't need to flush */
3023 if (ChP->R[0x32] == 0x08) { /* Rx FIFO is enabled */
3025 sDisRxFIFO(ChP); /* disable it */
3026 for (i = 0; i < 2000 / 200; i++) /* delay 2 uS to allow proc to disable FIFO */
3027 sInB(ChP->IntChan); /* depends on bus i/o timing */
3029 sGetChanStatus(ChP); /* clear any pending Rx errors in chan stat */
3030 Ch = (Byte_t) sGetChanNum(ChP);
3031 sOutB(ChP->Cmd, Ch | RESRXFCNT); /* apply reset Rx FIFO count */
3032 sOutB(ChP->Cmd, Ch); /* remove reset Rx FIFO count */
3033 sOutW((WordIO_t) ChP->IndexAddr, ChP->RxFIFOPtrs); /* clear Rx out ptr */
3034 sOutW(ChP->IndexData, 0);
3035 sOutW((WordIO_t) ChP->IndexAddr, ChP->RxFIFOPtrs + 2); /* clear Rx in ptr */
3036 sOutW(ChP->IndexData, 0);
3038 sEnRxFIFO(ChP); /* enable Rx FIFO */
3041 /***************************************************************************
3042 Function: sFlushTxFIFO
3043 Purpose: Flush the Tx FIFO
3044 Call: sFlushTxFIFO(ChP)
3045 CHANNEL_T *ChP; Ptr to channel structure
3047 Comments: To prevent data from being enqueued or dequeued in the Tx FIFO
3048 while it is being flushed the receive processor is stopped
3049 and the transmitter is disabled. After these operations a
3050 4 uS delay is done before clearing the pointers to allow
3051 the receive processor to stop. These items are handled inside
3053 Warnings: No context switches are allowed while executing this function.
3055 static void sFlushTxFIFO(CHANNEL_T * ChP)
3058 Byte_t Ch; /* channel number within AIOP */
3059 int TxEnabled; /* 1 if transmitter enabled */
3061 if (sGetTxCnt(ChP) == 0) /* Tx FIFO empty */
3062 return; /* don't need to flush */
3065 if (ChP->TxControl[3] & TX_ENABLE) {
3067 sDisTransmit(ChP); /* disable transmitter */
3069 sStopRxProcessor(ChP); /* stop Rx processor */
3070 for (i = 0; i < 4000 / 200; i++) /* delay 4 uS to allow proc to stop */
3071 sInB(ChP->IntChan); /* depends on bus i/o timing */
3072 Ch = (Byte_t) sGetChanNum(ChP);
3073 sOutB(ChP->Cmd, Ch | RESTXFCNT); /* apply reset Tx FIFO count */
3074 sOutB(ChP->Cmd, Ch); /* remove reset Tx FIFO count */
3075 sOutW((WordIO_t) ChP->IndexAddr, ChP->TxFIFOPtrs); /* clear Tx in/out ptrs */
3076 sOutW(ChP->IndexData, 0);
3078 sEnTransmit(ChP); /* enable transmitter */
3079 sStartRxProcessor(ChP); /* restart Rx processor */
3082 /***************************************************************************
3083 Function: sWriteTxPrioByte
3084 Purpose: Write a byte of priority transmit data to a channel
3085 Call: sWriteTxPrioByte(ChP,Data)
3086 CHANNEL_T *ChP; Ptr to channel structure
3087 Byte_t Data; The transmit data byte
3089 Return: int: 1 if the bytes is successfully written, otherwise 0.
3091 Comments: The priority byte is transmitted before any data in the Tx FIFO.
3093 Warnings: No context switches are allowed while executing this function.
3095 static int sWriteTxPrioByte(CHANNEL_T * ChP, Byte_t Data)
3097 Byte_t DWBuf[4]; /* buffer for double word writes */
3098 Word_t *WordPtr; /* must be far because Win SS != DS */
3099 register DWordIO_t IndexAddr;
3101 if (sGetTxCnt(ChP) > 1) { /* write it to Tx priority buffer */
3102 IndexAddr = ChP->IndexAddr;
3103 sOutW((WordIO_t) IndexAddr, ChP->TxPrioCnt); /* get priority buffer status */
3104 if (sInB((ByteIO_t) ChP->IndexData) & PRI_PEND) /* priority buffer busy */
3105 return (0); /* nothing sent */
3107 WordPtr = (Word_t *) (&DWBuf[0]);
3108 *WordPtr = ChP->TxPrioBuf; /* data byte address */
3110 DWBuf[2] = Data; /* data byte value */
3111 out32(IndexAddr, DWBuf); /* write it out */
3113 *WordPtr = ChP->TxPrioCnt; /* Tx priority count address */
3115 DWBuf[2] = PRI_PEND + 1; /* indicate 1 byte pending */
3116 DWBuf[3] = 0; /* priority buffer pointer */
3117 out32(IndexAddr, DWBuf); /* write it out */
3118 } else { /* write it to Tx FIFO */
3120 sWriteTxByte(sGetTxRxDataIO(ChP), Data);
3122 return (1); /* 1 byte sent */
3125 /***************************************************************************
3126 Function: sEnInterrupts
3127 Purpose: Enable one or more interrupts for a channel
3128 Call: sEnInterrupts(ChP,Flags)
3129 CHANNEL_T *ChP; Ptr to channel structure
3130 Word_t Flags: Interrupt enable flags, can be any combination
3131 of the following flags:
3132 TXINT_EN: Interrupt on Tx FIFO empty
3133 RXINT_EN: Interrupt on Rx FIFO at trigger level (see
3135 SRCINT_EN: Interrupt on SRC (Special Rx Condition)
3136 MCINT_EN: Interrupt on modem input change
3137 CHANINT_EN: Allow channel interrupt signal to the AIOP's
3138 Interrupt Channel Register.
3140 Comments: If an interrupt enable flag is set in Flags, that interrupt will be
3141 enabled. If an interrupt enable flag is not set in Flags, that
3142 interrupt will not be changed. Interrupts can be disabled with
3143 function sDisInterrupts().
3145 This function sets the appropriate bit for the channel in the AIOP's
3146 Interrupt Mask Register if the CHANINT_EN flag is set. This allows
3147 this channel's bit to be set in the AIOP's Interrupt Channel Register.
3149 Interrupts must also be globally enabled before channel interrupts
3150 will be passed on to the host. This is done with function
3153 In some cases it may be desirable to disable interrupts globally but
3154 enable channel interrupts. This would allow the global interrupt
3155 status register to be used to determine which AIOPs need service.
3157 static void sEnInterrupts(CHANNEL_T * ChP, Word_t Flags)
3159 Byte_t Mask; /* Interrupt Mask Register */
3161 ChP->RxControl[2] |=
3162 ((Byte_t) Flags & (RXINT_EN | SRCINT_EN | MCINT_EN));
3164 out32(ChP->IndexAddr, ChP->RxControl);
3166 ChP->TxControl[2] |= ((Byte_t) Flags & TXINT_EN);
3168 out32(ChP->IndexAddr, ChP->TxControl);
3170 if (Flags & CHANINT_EN) {
3171 Mask = sInB(ChP->IntMask) | sBitMapSetTbl[ChP->ChanNum];
3172 sOutB(ChP->IntMask, Mask);
3176 /***************************************************************************
3177 Function: sDisInterrupts
3178 Purpose: Disable one or more interrupts for a channel
3179 Call: sDisInterrupts(ChP,Flags)
3180 CHANNEL_T *ChP; Ptr to channel structure
3181 Word_t Flags: Interrupt flags, can be any combination
3182 of the following flags:
3183 TXINT_EN: Interrupt on Tx FIFO empty
3184 RXINT_EN: Interrupt on Rx FIFO at trigger level (see
3186 SRCINT_EN: Interrupt on SRC (Special Rx Condition)
3187 MCINT_EN: Interrupt on modem input change
3188 CHANINT_EN: Disable channel interrupt signal to the
3189 AIOP's Interrupt Channel Register.
3191 Comments: If an interrupt flag is set in Flags, that interrupt will be
3192 disabled. If an interrupt flag is not set in Flags, that
3193 interrupt will not be changed. Interrupts can be enabled with
3194 function sEnInterrupts().
3196 This function clears the appropriate bit for the channel in the AIOP's
3197 Interrupt Mask Register if the CHANINT_EN flag is set. This blocks
3198 this channel's bit from being set in the AIOP's Interrupt Channel
3201 static void sDisInterrupts(CHANNEL_T * ChP, Word_t Flags)
3203 Byte_t Mask; /* Interrupt Mask Register */
3205 ChP->RxControl[2] &=
3206 ~((Byte_t) Flags & (RXINT_EN | SRCINT_EN | MCINT_EN));
3207 out32(ChP->IndexAddr, ChP->RxControl);
3208 ChP->TxControl[2] &= ~((Byte_t) Flags & TXINT_EN);
3209 out32(ChP->IndexAddr, ChP->TxControl);
3211 if (Flags & CHANINT_EN) {
3212 Mask = sInB(ChP->IntMask) & sBitMapClrTbl[ChP->ChanNum];
3213 sOutB(ChP->IntMask, Mask);
3217 static void sSetInterfaceMode(CHANNEL_T * ChP, Byte_t mode)
3219 sOutB(ChP->CtlP->AiopIO[2], (mode & 0x18) | ChP->ChanNum);
3223 * Not an official SSCI function, but how to reset RocketModems.
3226 static void sModemReset(CONTROLLER_T * CtlP, int chan, int on)
3231 addr = CtlP->AiopIO[0] + 0x400;
3232 val = sInB(CtlP->MReg3IO);
3233 /* if AIOP[1] is not enabled, enable it */
3234 if ((val & 2) == 0) {
3235 val = sInB(CtlP->MReg2IO);
3236 sOutB(CtlP->MReg2IO, (val & 0xfc) | (1 & 0x03));
3237 sOutB(CtlP->MBaseIO, (unsigned char) (addr >> 6));
3243 sOutB(addr + chan, 0); /* apply or remove reset */
3248 * Not an official SSCI function, but how to reset RocketModems.
3251 static void sPCIModemReset(CONTROLLER_T * CtlP, int chan, int on)
3255 addr = CtlP->AiopIO[0] + 0x40; /* 2nd AIOP */
3258 sOutB(addr + chan, 0); /* apply or remove reset */
3261 /* Resets the speaker controller on RocketModem II and III devices */
3262 static void rmSpeakerReset(CONTROLLER_T * CtlP, unsigned long model)
3266 /* RocketModem II speaker control is at the 8th port location of offset 0x40 */
3267 if ((model == MODEL_RP4M) || (model == MODEL_RP6M)) {
3268 addr = CtlP->AiopIO[0] + 0x4F;
3272 /* RocketModem III speaker control is at the 1st port location of offset 0x80 */
3273 if ((model == MODEL_UPCI_RM3_8PORT)
3274 || (model == MODEL_UPCI_RM3_4PORT)) {
3275 addr = CtlP->AiopIO[0] + 0x88;
3280 /* Returns the line number given the controller (board), aiop and channel number */
3281 static unsigned char GetLineNumber(int ctrl, int aiop, int ch)
3283 return lineNumbers[(ctrl << 5) | (aiop << 3) | ch];
3287 * Stores the line number associated with a given controller (board), aiop
3288 * and channel number.
3289 * Returns: The line number assigned
3291 static unsigned char SetLineNumber(int ctrl, int aiop, int ch)
3293 lineNumbers[(ctrl << 5) | (aiop << 3) | ch] = nextLineNumber++;
3294 return (nextLineNumber - 1);