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);
1589 txcnt = sGetTxCnt(cp);
1591 if (sGetChanStatusLo(cp) & TXSHRMT)
1593 check_time = (HZ / info->cps) / 5;
1595 check_time = HZ * txcnt / info->cps;
1598 exit_time = orig_jiffies + timeout - jiffies;
1601 if (exit_time < check_time)
1602 check_time = exit_time;
1604 if (check_time == 0)
1606 #ifdef ROCKET_DEBUG_WAIT_UNTIL_SENT
1607 printk(KERN_INFO "txcnt = %d (jiff=%lu,check=%d)...\n", txcnt,
1608 jiffies, check_time);
1610 msleep_interruptible(jiffies_to_msecs(check_time));
1611 if (signal_pending(current))
1614 __set_current_state(TASK_RUNNING);
1615 #ifdef ROCKET_DEBUG_WAIT_UNTIL_SENT
1616 printk(KERN_INFO "txcnt = %d (jiff=%lu)...done\n", txcnt, jiffies);
1621 * rp_hangup() --- called by tty_hangup() when a hangup is signaled.
1623 static void rp_hangup(struct tty_struct *tty)
1626 struct r_port *info = (struct r_port *) tty->driver_data;
1628 if (rocket_paranoia_check(info, "rp_hangup"))
1631 #if (defined(ROCKET_DEBUG_OPEN) || defined(ROCKET_DEBUG_HANGUP))
1632 printk(KERN_INFO "rp_hangup of ttyR%d...\n", info->line);
1634 rp_flush_buffer(tty);
1635 if (info->flags & ROCKET_CLOSING)
1638 atomic_dec(&rp_num_ports_open);
1639 clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
1642 info->flags &= ~ROCKET_NORMAL_ACTIVE;
1645 cp = &info->channel;
1648 sDisInterrupts(cp, (TXINT_EN | MCINT_EN | RXINT_EN | SRCINT_EN | CHANINT_EN));
1650 sDisTxSoftFlowCtl(cp);
1652 info->flags &= ~ROCKET_INITIALIZED;
1654 wake_up_interruptible(&info->open_wait);
1658 * Exception handler - write char routine. The RocketPort driver uses a
1659 * double-buffering strategy, with the twist that if the in-memory CPU
1660 * buffer is empty, and there's space in the transmit FIFO, the
1661 * writing routines will write directly to transmit FIFO.
1662 * Write buffer and counters protected by spinlocks
1664 static void rp_put_char(struct tty_struct *tty, unsigned char ch)
1666 struct r_port *info = (struct r_port *) tty->driver_data;
1668 unsigned long flags;
1670 if (rocket_paranoia_check(info, "rp_put_char"))
1674 * Grab the port write mutex, locking out other processes that try to
1675 * write to this port
1677 mutex_lock(&info->write_mtx);
1679 #ifdef ROCKET_DEBUG_WRITE
1680 printk(KERN_INFO "rp_put_char %c...\n", ch);
1683 spin_lock_irqsave(&info->slock, flags);
1684 cp = &info->channel;
1686 if (!tty->stopped && !tty->hw_stopped && info->xmit_fifo_room == 0)
1687 info->xmit_fifo_room = TXFIFO_SIZE - sGetTxCnt(cp);
1689 if (tty->stopped || tty->hw_stopped || info->xmit_fifo_room == 0 || info->xmit_cnt != 0) {
1690 info->xmit_buf[info->xmit_head++] = ch;
1691 info->xmit_head &= XMIT_BUF_SIZE - 1;
1693 set_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
1695 sOutB(sGetTxRxDataIO(cp), ch);
1696 info->xmit_fifo_room--;
1698 spin_unlock_irqrestore(&info->slock, flags);
1699 mutex_unlock(&info->write_mtx);
1703 * Exception handler - write routine, called when user app writes to the device.
1704 * A per port write mutex is used to protect from another process writing to
1705 * this port at the same time. This other process could be running on the other CPU
1706 * or get control of the CPU if the copy_from_user() blocks due to a page fault (swapped out).
1707 * Spinlocks protect the info xmit members.
1709 static int rp_write(struct tty_struct *tty,
1710 const unsigned char *buf, int count)
1712 struct r_port *info = (struct r_port *) tty->driver_data;
1714 const unsigned char *b;
1716 unsigned long flags;
1718 if (count <= 0 || rocket_paranoia_check(info, "rp_write"))
1721 if (mutex_lock_interruptible(&info->write_mtx))
1722 return -ERESTARTSYS;
1724 #ifdef ROCKET_DEBUG_WRITE
1725 printk(KERN_INFO "rp_write %d chars...\n", count);
1727 cp = &info->channel;
1729 if (!tty->stopped && !tty->hw_stopped && info->xmit_fifo_room < count)
1730 info->xmit_fifo_room = TXFIFO_SIZE - sGetTxCnt(cp);
1733 * If the write queue for the port is empty, and there is FIFO space, stuff bytes
1734 * into FIFO. Use the write queue for temp storage.
1736 if (!tty->stopped && !tty->hw_stopped && info->xmit_cnt == 0 && info->xmit_fifo_room > 0) {
1737 c = min(count, info->xmit_fifo_room);
1740 /* Push data into FIFO, 2 bytes at a time */
1741 sOutStrW(sGetTxRxDataIO(cp), (unsigned short *) b, c / 2);
1743 /* If there is a byte remaining, write it */
1745 sOutB(sGetTxRxDataIO(cp), b[c - 1]);
1751 spin_lock_irqsave(&info->slock, flags);
1752 info->xmit_fifo_room -= c;
1753 spin_unlock_irqrestore(&info->slock, flags);
1756 /* If count is zero, we wrote it all and are done */
1760 /* Write remaining data into the port's xmit_buf */
1762 if (!info->tty) /* Seemingly obligatory check... */
1764 c = min(count, XMIT_BUF_SIZE - info->xmit_cnt - 1);
1765 c = min(c, XMIT_BUF_SIZE - info->xmit_head);
1770 memcpy(info->xmit_buf + info->xmit_head, b, c);
1772 spin_lock_irqsave(&info->slock, flags);
1774 (info->xmit_head + c) & (XMIT_BUF_SIZE - 1);
1775 info->xmit_cnt += c;
1776 spin_unlock_irqrestore(&info->slock, flags);
1783 if ((retval > 0) && !tty->stopped && !tty->hw_stopped)
1784 set_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
1787 if (info->xmit_cnt < WAKEUP_CHARS) {
1789 #ifdef ROCKETPORT_HAVE_POLL_WAIT
1790 wake_up_interruptible(&tty->poll_wait);
1793 mutex_unlock(&info->write_mtx);
1798 * Return the number of characters that can be sent. We estimate
1799 * only using the in-memory transmit buffer only, and ignore the
1800 * potential space in the transmit FIFO.
1802 static int rp_write_room(struct tty_struct *tty)
1804 struct r_port *info = (struct r_port *) tty->driver_data;
1807 if (rocket_paranoia_check(info, "rp_write_room"))
1810 ret = XMIT_BUF_SIZE - info->xmit_cnt - 1;
1813 #ifdef ROCKET_DEBUG_WRITE
1814 printk(KERN_INFO "rp_write_room returns %d...\n", ret);
1820 * Return the number of characters in the buffer. Again, this only
1821 * counts those characters in the in-memory transmit buffer.
1823 static int rp_chars_in_buffer(struct tty_struct *tty)
1825 struct r_port *info = (struct r_port *) tty->driver_data;
1828 if (rocket_paranoia_check(info, "rp_chars_in_buffer"))
1831 cp = &info->channel;
1833 #ifdef ROCKET_DEBUG_WRITE
1834 printk(KERN_INFO "rp_chars_in_buffer returns %d...\n", info->xmit_cnt);
1836 return info->xmit_cnt;
1840 * Flushes the TX fifo for a port, deletes data in the xmit_buf stored in the
1841 * r_port struct for the port. Note that spinlock are used to protect info members,
1842 * do not call this function if the spinlock is already held.
1844 static void rp_flush_buffer(struct tty_struct *tty)
1846 struct r_port *info = (struct r_port *) tty->driver_data;
1848 unsigned long flags;
1850 if (rocket_paranoia_check(info, "rp_flush_buffer"))
1853 spin_lock_irqsave(&info->slock, flags);
1854 info->xmit_cnt = info->xmit_head = info->xmit_tail = 0;
1855 spin_unlock_irqrestore(&info->slock, flags);
1857 #ifdef ROCKETPORT_HAVE_POLL_WAIT
1858 wake_up_interruptible(&tty->poll_wait);
1862 cp = &info->channel;
1868 static struct pci_device_id __devinitdata rocket_pci_ids[] = {
1869 { PCI_DEVICE(PCI_VENDOR_ID_RP, PCI_ANY_ID) },
1872 MODULE_DEVICE_TABLE(pci, rocket_pci_ids);
1875 * Called when a PCI card is found. Retrieves and stores model information,
1876 * init's aiopic and serial port hardware.
1877 * Inputs: i is the board number (0-n)
1879 static __init int register_PCI(int i, struct pci_dev *dev)
1881 int num_aiops, aiop, max_num_aiops, num_chan, chan;
1882 unsigned int aiopio[MAX_AIOPS_PER_BOARD];
1883 char *str, *board_type;
1887 int altChanRingIndicator = 0;
1888 int ports_per_aiop = 8;
1889 WordIO_t ConfigIO = 0;
1890 ByteIO_t UPCIRingInd = 0;
1892 if (!dev || pci_enable_device(dev))
1895 rcktpt_io_addr[i] = pci_resource_start(dev, 0);
1897 rcktpt_type[i] = ROCKET_TYPE_NORMAL;
1898 rocketModel[i].loadrm2 = 0;
1899 rocketModel[i].startingPortNumber = nextLineNumber;
1901 /* Depending on the model, set up some config variables */
1902 switch (dev->device) {
1903 case PCI_DEVICE_ID_RP4QUAD:
1907 rocketModel[i].model = MODEL_RP4QUAD;
1908 strcpy(rocketModel[i].modelString, "RocketPort 4 port w/quad cable");
1909 rocketModel[i].numPorts = 4;
1911 case PCI_DEVICE_ID_RP8OCTA:
1914 rocketModel[i].model = MODEL_RP8OCTA;
1915 strcpy(rocketModel[i].modelString, "RocketPort 8 port w/octa cable");
1916 rocketModel[i].numPorts = 8;
1918 case PCI_DEVICE_ID_URP8OCTA:
1921 rocketModel[i].model = MODEL_UPCI_RP8OCTA;
1922 strcpy(rocketModel[i].modelString, "RocketPort UPCI 8 port w/octa cable");
1923 rocketModel[i].numPorts = 8;
1925 case PCI_DEVICE_ID_RP8INTF:
1928 rocketModel[i].model = MODEL_RP8INTF;
1929 strcpy(rocketModel[i].modelString, "RocketPort 8 port w/external I/F");
1930 rocketModel[i].numPorts = 8;
1932 case PCI_DEVICE_ID_URP8INTF:
1935 rocketModel[i].model = MODEL_UPCI_RP8INTF;
1936 strcpy(rocketModel[i].modelString, "RocketPort UPCI 8 port w/external I/F");
1937 rocketModel[i].numPorts = 8;
1939 case PCI_DEVICE_ID_RP8J:
1942 rocketModel[i].model = MODEL_RP8J;
1943 strcpy(rocketModel[i].modelString, "RocketPort 8 port w/RJ11 connectors");
1944 rocketModel[i].numPorts = 8;
1946 case PCI_DEVICE_ID_RP4J:
1950 rocketModel[i].model = MODEL_RP4J;
1951 strcpy(rocketModel[i].modelString, "RocketPort 4 port w/RJ45 connectors");
1952 rocketModel[i].numPorts = 4;
1954 case PCI_DEVICE_ID_RP8SNI:
1955 str = "8 (DB78 Custom)";
1957 rocketModel[i].model = MODEL_RP8SNI;
1958 strcpy(rocketModel[i].modelString, "RocketPort 8 port w/ custom DB78");
1959 rocketModel[i].numPorts = 8;
1961 case PCI_DEVICE_ID_RP16SNI:
1962 str = "16 (DB78 Custom)";
1964 rocketModel[i].model = MODEL_RP16SNI;
1965 strcpy(rocketModel[i].modelString, "RocketPort 16 port w/ custom DB78");
1966 rocketModel[i].numPorts = 16;
1968 case PCI_DEVICE_ID_RP16INTF:
1971 rocketModel[i].model = MODEL_RP16INTF;
1972 strcpy(rocketModel[i].modelString, "RocketPort 16 port w/external I/F");
1973 rocketModel[i].numPorts = 16;
1975 case PCI_DEVICE_ID_URP16INTF:
1978 rocketModel[i].model = MODEL_UPCI_RP16INTF;
1979 strcpy(rocketModel[i].modelString, "RocketPort UPCI 16 port w/external I/F");
1980 rocketModel[i].numPorts = 16;
1982 case PCI_DEVICE_ID_CRP16INTF:
1985 rocketModel[i].model = MODEL_CPCI_RP16INTF;
1986 strcpy(rocketModel[i].modelString, "RocketPort Compact PCI 16 port w/external I/F");
1987 rocketModel[i].numPorts = 16;
1989 case PCI_DEVICE_ID_RP32INTF:
1992 rocketModel[i].model = MODEL_RP32INTF;
1993 strcpy(rocketModel[i].modelString, "RocketPort 32 port w/external I/F");
1994 rocketModel[i].numPorts = 32;
1996 case PCI_DEVICE_ID_URP32INTF:
1999 rocketModel[i].model = MODEL_UPCI_RP32INTF;
2000 strcpy(rocketModel[i].modelString, "RocketPort UPCI 32 port w/external I/F");
2001 rocketModel[i].numPorts = 32;
2003 case PCI_DEVICE_ID_RPP4:
2004 str = "Plus Quadcable";
2007 altChanRingIndicator++;
2009 rocketModel[i].model = MODEL_RPP4;
2010 strcpy(rocketModel[i].modelString, "RocketPort Plus 4 port");
2011 rocketModel[i].numPorts = 4;
2013 case PCI_DEVICE_ID_RPP8:
2014 str = "Plus Octacable";
2017 altChanRingIndicator++;
2019 rocketModel[i].model = MODEL_RPP8;
2020 strcpy(rocketModel[i].modelString, "RocketPort Plus 8 port");
2021 rocketModel[i].numPorts = 8;
2023 case PCI_DEVICE_ID_RP2_232:
2024 str = "Plus 2 (RS-232)";
2027 altChanRingIndicator++;
2029 rocketModel[i].model = MODEL_RP2_232;
2030 strcpy(rocketModel[i].modelString, "RocketPort Plus 2 port RS232");
2031 rocketModel[i].numPorts = 2;
2033 case PCI_DEVICE_ID_RP2_422:
2034 str = "Plus 2 (RS-422)";
2037 altChanRingIndicator++;
2039 rocketModel[i].model = MODEL_RP2_422;
2040 strcpy(rocketModel[i].modelString, "RocketPort Plus 2 port RS422");
2041 rocketModel[i].numPorts = 2;
2043 case PCI_DEVICE_ID_RP6M:
2049 /* If revision is 1, the rocketmodem flash must be loaded.
2050 * If it is 2 it is a "socketed" version. */
2051 if (dev->revision == 1) {
2052 rcktpt_type[i] = ROCKET_TYPE_MODEMII;
2053 rocketModel[i].loadrm2 = 1;
2055 rcktpt_type[i] = ROCKET_TYPE_MODEM;
2058 rocketModel[i].model = MODEL_RP6M;
2059 strcpy(rocketModel[i].modelString, "RocketModem 6 port");
2060 rocketModel[i].numPorts = 6;
2062 case PCI_DEVICE_ID_RP4M:
2066 if (dev->revision == 1) {
2067 rcktpt_type[i] = ROCKET_TYPE_MODEMII;
2068 rocketModel[i].loadrm2 = 1;
2070 rcktpt_type[i] = ROCKET_TYPE_MODEM;
2073 rocketModel[i].model = MODEL_RP4M;
2074 strcpy(rocketModel[i].modelString, "RocketModem 4 port");
2075 rocketModel[i].numPorts = 4;
2078 str = "(unknown/unsupported)";
2084 * Check for UPCI boards.
2087 switch (dev->device) {
2088 case PCI_DEVICE_ID_URP32INTF:
2089 case PCI_DEVICE_ID_URP8INTF:
2090 case PCI_DEVICE_ID_URP16INTF:
2091 case PCI_DEVICE_ID_CRP16INTF:
2092 case PCI_DEVICE_ID_URP8OCTA:
2093 rcktpt_io_addr[i] = pci_resource_start(dev, 2);
2094 ConfigIO = pci_resource_start(dev, 1);
2095 if (dev->device == PCI_DEVICE_ID_URP8OCTA) {
2096 UPCIRingInd = rcktpt_io_addr[i] + _PCI_9030_RING_IND;
2099 * Check for octa or quad cable.
2102 (sInW(ConfigIO + _PCI_9030_GPIO_CTRL) &
2103 PCI_GPIO_CTRL_8PORT)) {
2106 rocketModel[i].numPorts = 4;
2110 case PCI_DEVICE_ID_UPCI_RM3_8PORT:
2113 rocketModel[i].model = MODEL_UPCI_RM3_8PORT;
2114 strcpy(rocketModel[i].modelString, "RocketModem III 8 port");
2115 rocketModel[i].numPorts = 8;
2116 rcktpt_io_addr[i] = pci_resource_start(dev, 2);
2117 UPCIRingInd = rcktpt_io_addr[i] + _PCI_9030_RING_IND;
2118 ConfigIO = pci_resource_start(dev, 1);
2119 rcktpt_type[i] = ROCKET_TYPE_MODEMIII;
2121 case PCI_DEVICE_ID_UPCI_RM3_4PORT:
2124 rocketModel[i].model = MODEL_UPCI_RM3_4PORT;
2125 strcpy(rocketModel[i].modelString, "RocketModem III 4 port");
2126 rocketModel[i].numPorts = 4;
2127 rcktpt_io_addr[i] = pci_resource_start(dev, 2);
2128 UPCIRingInd = rcktpt_io_addr[i] + _PCI_9030_RING_IND;
2129 ConfigIO = pci_resource_start(dev, 1);
2130 rcktpt_type[i] = ROCKET_TYPE_MODEMIII;
2136 switch (rcktpt_type[i]) {
2137 case ROCKET_TYPE_MODEM:
2138 board_type = "RocketModem";
2140 case ROCKET_TYPE_MODEMII:
2141 board_type = "RocketModem II";
2143 case ROCKET_TYPE_MODEMIII:
2144 board_type = "RocketModem III";
2147 board_type = "RocketPort";
2152 sClockPrescale = 0x12; /* mod 2 (divide by 3) */
2153 rp_baud_base[i] = 921600;
2156 * If support_low_speed is set, use the slow clock
2157 * prescale, which supports 50 bps
2159 if (support_low_speed) {
2160 /* mod 9 (divide by 10) prescale */
2161 sClockPrescale = 0x19;
2162 rp_baud_base[i] = 230400;
2164 /* mod 4 (devide by 5) prescale */
2165 sClockPrescale = 0x14;
2166 rp_baud_base[i] = 460800;
2170 for (aiop = 0; aiop < max_num_aiops; aiop++)
2171 aiopio[aiop] = rcktpt_io_addr[i] + (aiop * 0x40);
2172 ctlp = sCtlNumToCtlPtr(i);
2173 num_aiops = sPCIInitController(ctlp, i, aiopio, max_num_aiops, ConfigIO, 0, FREQ_DIS, 0, altChanRingIndicator, UPCIRingInd);
2174 for (aiop = 0; aiop < max_num_aiops; aiop++)
2175 ctlp->AiopNumChan[aiop] = ports_per_aiop;
2177 dev_info(&dev->dev, "comtrol PCI controller #%d found at "
2178 "address %04lx, %d AIOP(s) (%s), creating ttyR%d - %ld\n",
2179 i, rcktpt_io_addr[i], num_aiops, rocketModel[i].modelString,
2180 rocketModel[i].startingPortNumber,
2181 rocketModel[i].startingPortNumber + rocketModel[i].numPorts-1);
2183 if (num_aiops <= 0) {
2184 rcktpt_io_addr[i] = 0;
2189 /* Reset the AIOPIC, init the serial ports */
2190 for (aiop = 0; aiop < num_aiops; aiop++) {
2191 sResetAiopByNum(ctlp, aiop);
2192 num_chan = ports_per_aiop;
2193 for (chan = 0; chan < num_chan; chan++)
2194 init_r_port(i, aiop, chan, dev);
2197 /* Rocket modems must be reset */
2198 if ((rcktpt_type[i] == ROCKET_TYPE_MODEM) ||
2199 (rcktpt_type[i] == ROCKET_TYPE_MODEMII) ||
2200 (rcktpt_type[i] == ROCKET_TYPE_MODEMIII)) {
2201 num_chan = ports_per_aiop;
2202 for (chan = 0; chan < num_chan; chan++)
2203 sPCIModemReset(ctlp, chan, 1);
2205 for (chan = 0; chan < num_chan; chan++)
2206 sPCIModemReset(ctlp, chan, 0);
2208 rmSpeakerReset(ctlp, rocketModel[i].model);
2214 * Probes for PCI cards, inits them if found
2215 * Input: board_found = number of ISA boards already found, or the
2216 * starting board number
2217 * Returns: Number of PCI boards found
2219 static int __init init_PCI(int boards_found)
2221 struct pci_dev *dev = NULL;
2224 /* Work through the PCI device list, pulling out ours */
2225 while ((dev = pci_get_device(PCI_VENDOR_ID_RP, PCI_ANY_ID, dev))) {
2226 if (register_PCI(count + boards_found, dev))
2232 #endif /* CONFIG_PCI */
2235 * Probes for ISA cards
2236 * Input: i = the board number to look for
2237 * Returns: 1 if board found, 0 else
2239 static int __init init_ISA(int i)
2241 int num_aiops, num_chan = 0, total_num_chan = 0;
2243 unsigned int aiopio[MAX_AIOPS_PER_BOARD];
2247 /* If io_addr is zero, no board configured */
2248 if (rcktpt_io_addr[i] == 0)
2251 /* Reserve the IO region */
2252 if (!request_region(rcktpt_io_addr[i], 64, "Comtrol RocketPort")) {
2253 printk(KERN_ERR "Unable to reserve IO region for configured "
2254 "ISA RocketPort at address 0x%lx, board not "
2255 "installed...\n", rcktpt_io_addr[i]);
2256 rcktpt_io_addr[i] = 0;
2260 ctlp = sCtlNumToCtlPtr(i);
2262 ctlp->boardType = rcktpt_type[i];
2264 switch (rcktpt_type[i]) {
2265 case ROCKET_TYPE_PC104:
2266 type_string = "(PC104)";
2268 case ROCKET_TYPE_MODEM:
2269 type_string = "(RocketModem)";
2271 case ROCKET_TYPE_MODEMII:
2272 type_string = "(RocketModem II)";
2280 * If support_low_speed is set, use the slow clock prescale,
2281 * which supports 50 bps
2283 if (support_low_speed) {
2284 sClockPrescale = 0x19; /* mod 9 (divide by 10) prescale */
2285 rp_baud_base[i] = 230400;
2287 sClockPrescale = 0x14; /* mod 4 (devide by 5) prescale */
2288 rp_baud_base[i] = 460800;
2291 for (aiop = 0; aiop < MAX_AIOPS_PER_BOARD; aiop++)
2292 aiopio[aiop] = rcktpt_io_addr[i] + (aiop * 0x400);
2294 num_aiops = sInitController(ctlp, i, controller + (i * 0x400), aiopio, MAX_AIOPS_PER_BOARD, 0, FREQ_DIS, 0);
2296 if (ctlp->boardType == ROCKET_TYPE_PC104) {
2297 sEnAiop(ctlp, 2); /* only one AIOPIC, but these */
2298 sEnAiop(ctlp, 3); /* CSels used for other stuff */
2301 /* If something went wrong initing the AIOP's release the ISA IO memory */
2302 if (num_aiops <= 0) {
2303 release_region(rcktpt_io_addr[i], 64);
2304 rcktpt_io_addr[i] = 0;
2308 rocketModel[i].startingPortNumber = nextLineNumber;
2310 for (aiop = 0; aiop < num_aiops; aiop++) {
2311 sResetAiopByNum(ctlp, aiop);
2312 sEnAiop(ctlp, aiop);
2313 num_chan = sGetAiopNumChan(ctlp, aiop);
2314 total_num_chan += num_chan;
2315 for (chan = 0; chan < num_chan; chan++)
2316 init_r_port(i, aiop, chan, NULL);
2319 if ((rcktpt_type[i] == ROCKET_TYPE_MODEM) || (rcktpt_type[i] == ROCKET_TYPE_MODEMII)) {
2320 num_chan = sGetAiopNumChan(ctlp, 0);
2321 total_num_chan = num_chan;
2322 for (chan = 0; chan < num_chan; chan++)
2323 sModemReset(ctlp, chan, 1);
2325 for (chan = 0; chan < num_chan; chan++)
2326 sModemReset(ctlp, chan, 0);
2328 strcpy(rocketModel[i].modelString, "RocketModem ISA");
2330 strcpy(rocketModel[i].modelString, "RocketPort ISA");
2332 rocketModel[i].numPorts = total_num_chan;
2333 rocketModel[i].model = MODEL_ISA;
2335 printk(KERN_INFO "RocketPort ISA card #%d found at 0x%lx - %d AIOPs %s\n",
2336 i, rcktpt_io_addr[i], num_aiops, type_string);
2338 printk(KERN_INFO "Installing %s, creating /dev/ttyR%d - %ld\n",
2339 rocketModel[i].modelString,
2340 rocketModel[i].startingPortNumber,
2341 rocketModel[i].startingPortNumber +
2342 rocketModel[i].numPorts - 1);
2347 static const struct tty_operations rocket_ops = {
2351 .put_char = rp_put_char,
2352 .write_room = rp_write_room,
2353 .chars_in_buffer = rp_chars_in_buffer,
2354 .flush_buffer = rp_flush_buffer,
2356 .throttle = rp_throttle,
2357 .unthrottle = rp_unthrottle,
2358 .set_termios = rp_set_termios,
2361 .hangup = rp_hangup,
2362 .break_ctl = rp_break,
2363 .send_xchar = rp_send_xchar,
2364 .wait_until_sent = rp_wait_until_sent,
2365 .tiocmget = rp_tiocmget,
2366 .tiocmset = rp_tiocmset,
2370 * The module "startup" routine; it's run when the module is loaded.
2372 static int __init rp_init(void)
2374 int ret = -ENOMEM, pci_boards_found, isa_boards_found, i;
2376 printk(KERN_INFO "RocketPort device driver module, version %s, %s\n",
2377 ROCKET_VERSION, ROCKET_DATE);
2379 rocket_driver = alloc_tty_driver(MAX_RP_PORTS);
2384 * If board 1 is non-zero, there is at least one ISA configured. If controller is
2385 * zero, use the default controller IO address of board1 + 0x40.
2388 if (controller == 0)
2389 controller = board1 + 0x40;
2391 controller = 0; /* Used as a flag, meaning no ISA boards */
2394 /* If an ISA card is configured, reserve the 4 byte IO space for the Mudbac controller */
2395 if (controller && (!request_region(controller, 4, "Comtrol RocketPort"))) {
2396 printk(KERN_ERR "Unable to reserve IO region for first "
2397 "configured ISA RocketPort controller 0x%lx. "
2398 "Driver exiting\n", controller);
2403 /* Store ISA variable retrieved from command line or .conf file. */
2404 rcktpt_io_addr[0] = board1;
2405 rcktpt_io_addr[1] = board2;
2406 rcktpt_io_addr[2] = board3;
2407 rcktpt_io_addr[3] = board4;
2409 rcktpt_type[0] = modem1 ? ROCKET_TYPE_MODEM : ROCKET_TYPE_NORMAL;
2410 rcktpt_type[0] = pc104_1[0] ? ROCKET_TYPE_PC104 : rcktpt_type[0];
2411 rcktpt_type[1] = modem2 ? ROCKET_TYPE_MODEM : ROCKET_TYPE_NORMAL;
2412 rcktpt_type[1] = pc104_2[0] ? ROCKET_TYPE_PC104 : rcktpt_type[1];
2413 rcktpt_type[2] = modem3 ? ROCKET_TYPE_MODEM : ROCKET_TYPE_NORMAL;
2414 rcktpt_type[2] = pc104_3[0] ? ROCKET_TYPE_PC104 : rcktpt_type[2];
2415 rcktpt_type[3] = modem4 ? ROCKET_TYPE_MODEM : ROCKET_TYPE_NORMAL;
2416 rcktpt_type[3] = pc104_4[0] ? ROCKET_TYPE_PC104 : rcktpt_type[3];
2419 * Set up the tty driver structure and then register this
2420 * driver with the tty layer.
2423 rocket_driver->owner = THIS_MODULE;
2424 rocket_driver->flags = TTY_DRIVER_DYNAMIC_DEV;
2425 rocket_driver->name = "ttyR";
2426 rocket_driver->driver_name = "Comtrol RocketPort";
2427 rocket_driver->major = TTY_ROCKET_MAJOR;
2428 rocket_driver->minor_start = 0;
2429 rocket_driver->type = TTY_DRIVER_TYPE_SERIAL;
2430 rocket_driver->subtype = SERIAL_TYPE_NORMAL;
2431 rocket_driver->init_termios = tty_std_termios;
2432 rocket_driver->init_termios.c_cflag =
2433 B9600 | CS8 | CREAD | HUPCL | CLOCAL;
2434 rocket_driver->init_termios.c_ispeed = 9600;
2435 rocket_driver->init_termios.c_ospeed = 9600;
2436 #ifdef ROCKET_SOFT_FLOW
2437 rocket_driver->flags |= TTY_DRIVER_REAL_RAW;
2439 tty_set_operations(rocket_driver, &rocket_ops);
2441 ret = tty_register_driver(rocket_driver);
2443 printk(KERN_ERR "Couldn't install tty RocketPort driver\n");
2447 #ifdef ROCKET_DEBUG_OPEN
2448 printk(KERN_INFO "RocketPort driver is major %d\n", rocket_driver.major);
2452 * OK, let's probe each of the controllers looking for boards. Any boards found
2453 * will be initialized here.
2455 isa_boards_found = 0;
2456 pci_boards_found = 0;
2458 for (i = 0; i < NUM_BOARDS; i++) {
2464 if (isa_boards_found < NUM_BOARDS)
2465 pci_boards_found = init_PCI(isa_boards_found);
2468 max_board = pci_boards_found + isa_boards_found;
2470 if (max_board == 0) {
2471 printk(KERN_ERR "No rocketport ports found; unloading driver\n");
2478 tty_unregister_driver(rocket_driver);
2480 put_tty_driver(rocket_driver);
2486 static void rp_cleanup_module(void)
2491 del_timer_sync(&rocket_timer);
2493 retval = tty_unregister_driver(rocket_driver);
2495 printk(KERN_ERR "Error %d while trying to unregister "
2496 "rocketport driver\n", -retval);
2498 for (i = 0; i < MAX_RP_PORTS; i++)
2500 tty_unregister_device(rocket_driver, i);
2504 put_tty_driver(rocket_driver);
2506 for (i = 0; i < NUM_BOARDS; i++) {
2507 if (rcktpt_io_addr[i] <= 0 || is_PCI[i])
2509 release_region(rcktpt_io_addr[i], 64);
2512 release_region(controller, 4);
2515 /***************************************************************************
2516 Function: sInitController
2517 Purpose: Initialization of controller global registers and controller
2519 Call: sInitController(CtlP,CtlNum,MudbacIO,AiopIOList,AiopIOListSize,
2520 IRQNum,Frequency,PeriodicOnly)
2521 CONTROLLER_T *CtlP; Ptr to controller structure
2522 int CtlNum; Controller number
2523 ByteIO_t MudbacIO; Mudbac base I/O address.
2524 ByteIO_t *AiopIOList; List of I/O addresses for each AIOP.
2525 This list must be in the order the AIOPs will be found on the
2526 controller. Once an AIOP in the list is not found, it is
2527 assumed that there are no more AIOPs on the controller.
2528 int AiopIOListSize; Number of addresses in AiopIOList
2529 int IRQNum; Interrupt Request number. Can be any of the following:
2530 0: Disable global interrupts
2539 Byte_t Frequency: A flag identifying the frequency
2540 of the periodic interrupt, can be any one of the following:
2541 FREQ_DIS - periodic interrupt disabled
2542 FREQ_137HZ - 137 Hertz
2543 FREQ_69HZ - 69 Hertz
2544 FREQ_34HZ - 34 Hertz
2545 FREQ_17HZ - 17 Hertz
2548 If IRQNum is set to 0 the Frequency parameter is
2549 overidden, it is forced to a value of FREQ_DIS.
2550 int PeriodicOnly: 1 if all interrupts except the periodic
2551 interrupt are to be blocked.
2552 0 is both the periodic interrupt and
2553 other channel interrupts are allowed.
2554 If IRQNum is set to 0 the PeriodicOnly parameter is
2555 overidden, it is forced to a value of 0.
2556 Return: int: Number of AIOPs on the controller, or CTLID_NULL if controller
2557 initialization failed.
2560 If periodic interrupts are to be disabled but AIOP interrupts
2561 are allowed, set Frequency to FREQ_DIS and PeriodicOnly to 0.
2563 If interrupts are to be completely disabled set IRQNum to 0.
2565 Setting Frequency to FREQ_DIS and PeriodicOnly to 1 is an
2566 invalid combination.
2568 This function performs initialization of global interrupt modes,
2569 but it does not actually enable global interrupts. To enable
2570 and disable global interrupts use functions sEnGlobalInt() and
2571 sDisGlobalInt(). Enabling of global interrupts is normally not
2572 done until all other initializations are complete.
2574 Even if interrupts are globally enabled, they must also be
2575 individually enabled for each channel that is to generate
2578 Warnings: No range checking on any of the parameters is done.
2580 No context switches are allowed while executing this function.
2582 After this function all AIOPs on the controller are disabled,
2583 they can be enabled with sEnAiop().
2585 static int sInitController(CONTROLLER_T * CtlP, int CtlNum, ByteIO_t MudbacIO,
2586 ByteIO_t * AiopIOList, int AiopIOListSize,
2587 int IRQNum, Byte_t Frequency, int PeriodicOnly)
2593 CtlP->AiopIntrBits = aiop_intr_bits;
2594 CtlP->AltChanRingIndicator = 0;
2595 CtlP->CtlNum = CtlNum;
2596 CtlP->CtlID = CTLID_0001; /* controller release 1 */
2597 CtlP->BusType = isISA;
2598 CtlP->MBaseIO = MudbacIO;
2599 CtlP->MReg1IO = MudbacIO + 1;
2600 CtlP->MReg2IO = MudbacIO + 2;
2601 CtlP->MReg3IO = MudbacIO + 3;
2603 CtlP->MReg2 = 0; /* interrupt disable */
2604 CtlP->MReg3 = 0; /* no periodic interrupts */
2606 if (sIRQMap[IRQNum] == 0) { /* interrupts globally disabled */
2607 CtlP->MReg2 = 0; /* interrupt disable */
2608 CtlP->MReg3 = 0; /* no periodic interrupts */
2610 CtlP->MReg2 = sIRQMap[IRQNum]; /* set IRQ number */
2611 CtlP->MReg3 = Frequency; /* set frequency */
2612 if (PeriodicOnly) { /* periodic interrupt only */
2613 CtlP->MReg3 |= PERIODIC_ONLY;
2617 sOutB(CtlP->MReg2IO, CtlP->MReg2);
2618 sOutB(CtlP->MReg3IO, CtlP->MReg3);
2619 sControllerEOI(CtlP); /* clear EOI if warm init */
2622 for (i = done = 0; i < AiopIOListSize; i++) {
2624 CtlP->AiopIO[i] = (WordIO_t) io;
2625 CtlP->AiopIntChanIO[i] = io + _INT_CHAN;
2626 sOutB(CtlP->MReg2IO, CtlP->MReg2 | (i & 0x03)); /* AIOP index */
2627 sOutB(MudbacIO, (Byte_t) (io >> 6)); /* set up AIOP I/O in MUDBAC */
2630 sEnAiop(CtlP, i); /* enable the AIOP */
2631 CtlP->AiopID[i] = sReadAiopID(io); /* read AIOP ID */
2632 if (CtlP->AiopID[i] == AIOPID_NULL) /* if AIOP does not exist */
2633 done = 1; /* done looking for AIOPs */
2635 CtlP->AiopNumChan[i] = sReadAiopNumChan((WordIO_t) io); /* num channels in AIOP */
2636 sOutW((WordIO_t) io + _INDX_ADDR, _CLK_PRE); /* clock prescaler */
2637 sOutB(io + _INDX_DATA, sClockPrescale);
2638 CtlP->NumAiop++; /* bump count of AIOPs */
2640 sDisAiop(CtlP, i); /* disable AIOP */
2643 if (CtlP->NumAiop == 0)
2646 return (CtlP->NumAiop);
2649 /***************************************************************************
2650 Function: sPCIInitController
2651 Purpose: Initialization of controller global registers and controller
2653 Call: sPCIInitController(CtlP,CtlNum,AiopIOList,AiopIOListSize,
2654 IRQNum,Frequency,PeriodicOnly)
2655 CONTROLLER_T *CtlP; Ptr to controller structure
2656 int CtlNum; Controller number
2657 ByteIO_t *AiopIOList; List of I/O addresses for each AIOP.
2658 This list must be in the order the AIOPs will be found on the
2659 controller. Once an AIOP in the list is not found, it is
2660 assumed that there are no more AIOPs on the controller.
2661 int AiopIOListSize; Number of addresses in AiopIOList
2662 int IRQNum; Interrupt Request number. Can be any of the following:
2663 0: Disable global interrupts
2672 Byte_t Frequency: A flag identifying the frequency
2673 of the periodic interrupt, can be any one of the following:
2674 FREQ_DIS - periodic interrupt disabled
2675 FREQ_137HZ - 137 Hertz
2676 FREQ_69HZ - 69 Hertz
2677 FREQ_34HZ - 34 Hertz
2678 FREQ_17HZ - 17 Hertz
2681 If IRQNum is set to 0 the Frequency parameter is
2682 overidden, it is forced to a value of FREQ_DIS.
2683 int PeriodicOnly: 1 if all interrupts except the periodic
2684 interrupt are to be blocked.
2685 0 is both the periodic interrupt and
2686 other channel interrupts are allowed.
2687 If IRQNum is set to 0 the PeriodicOnly parameter is
2688 overidden, it is forced to a value of 0.
2689 Return: int: Number of AIOPs on the controller, or CTLID_NULL if controller
2690 initialization failed.
2693 If periodic interrupts are to be disabled but AIOP interrupts
2694 are allowed, set Frequency to FREQ_DIS and PeriodicOnly to 0.
2696 If interrupts are to be completely disabled set IRQNum to 0.
2698 Setting Frequency to FREQ_DIS and PeriodicOnly to 1 is an
2699 invalid combination.
2701 This function performs initialization of global interrupt modes,
2702 but it does not actually enable global interrupts. To enable
2703 and disable global interrupts use functions sEnGlobalInt() and
2704 sDisGlobalInt(). Enabling of global interrupts is normally not
2705 done until all other initializations are complete.
2707 Even if interrupts are globally enabled, they must also be
2708 individually enabled for each channel that is to generate
2711 Warnings: No range checking on any of the parameters is done.
2713 No context switches are allowed while executing this function.
2715 After this function all AIOPs on the controller are disabled,
2716 they can be enabled with sEnAiop().
2718 static int sPCIInitController(CONTROLLER_T * CtlP, int CtlNum,
2719 ByteIO_t * AiopIOList, int AiopIOListSize,
2720 WordIO_t ConfigIO, int IRQNum, Byte_t Frequency,
2721 int PeriodicOnly, int altChanRingIndicator,
2727 CtlP->AltChanRingIndicator = altChanRingIndicator;
2728 CtlP->UPCIRingInd = UPCIRingInd;
2729 CtlP->CtlNum = CtlNum;
2730 CtlP->CtlID = CTLID_0001; /* controller release 1 */
2731 CtlP->BusType = isPCI; /* controller release 1 */
2735 CtlP->PCIIO = ConfigIO + _PCI_9030_INT_CTRL;
2736 CtlP->PCIIO2 = ConfigIO + _PCI_9030_GPIO_CTRL;
2737 CtlP->AiopIntrBits = upci_aiop_intr_bits;
2741 (WordIO_t) ((ByteIO_t) AiopIOList[0] + _PCI_INT_FUNC);
2742 CtlP->AiopIntrBits = aiop_intr_bits;
2745 sPCIControllerEOI(CtlP); /* clear EOI if warm init */
2748 for (i = 0; i < AiopIOListSize; i++) {
2750 CtlP->AiopIO[i] = (WordIO_t) io;
2751 CtlP->AiopIntChanIO[i] = io + _INT_CHAN;
2753 CtlP->AiopID[i] = sReadAiopID(io); /* read AIOP ID */
2754 if (CtlP->AiopID[i] == AIOPID_NULL) /* if AIOP does not exist */
2755 break; /* done looking for AIOPs */
2757 CtlP->AiopNumChan[i] = sReadAiopNumChan((WordIO_t) io); /* num channels in AIOP */
2758 sOutW((WordIO_t) io + _INDX_ADDR, _CLK_PRE); /* clock prescaler */
2759 sOutB(io + _INDX_DATA, sClockPrescale);
2760 CtlP->NumAiop++; /* bump count of AIOPs */
2763 if (CtlP->NumAiop == 0)
2766 return (CtlP->NumAiop);
2769 /***************************************************************************
2770 Function: sReadAiopID
2771 Purpose: Read the AIOP idenfication number directly from an AIOP.
2772 Call: sReadAiopID(io)
2773 ByteIO_t io: AIOP base I/O address
2774 Return: int: Flag AIOPID_XXXX if a valid AIOP is found, where X
2775 is replace by an identifying number.
2776 Flag AIOPID_NULL if no valid AIOP is found
2777 Warnings: No context switches are allowed while executing this function.
2780 static int sReadAiopID(ByteIO_t io)
2782 Byte_t AiopID; /* ID byte from AIOP */
2784 sOutB(io + _CMD_REG, RESET_ALL); /* reset AIOP */
2785 sOutB(io + _CMD_REG, 0x0);
2786 AiopID = sInW(io + _CHN_STAT0) & 0x07;
2789 else /* AIOP does not exist */
2793 /***************************************************************************
2794 Function: sReadAiopNumChan
2795 Purpose: Read the number of channels available in an AIOP directly from
2797 Call: sReadAiopNumChan(io)
2798 WordIO_t io: AIOP base I/O address
2799 Return: int: The number of channels available
2800 Comments: The number of channels is determined by write/reads from identical
2801 offsets within the SRAM address spaces for channels 0 and 4.
2802 If the channel 4 space is mirrored to channel 0 it is a 4 channel
2803 AIOP, otherwise it is an 8 channel.
2804 Warnings: No context switches are allowed while executing this function.
2806 static int sReadAiopNumChan(WordIO_t io)
2809 static Byte_t R[4] = { 0x00, 0x00, 0x34, 0x12 };
2811 /* write to chan 0 SRAM */
2812 out32((DWordIO_t) io + _INDX_ADDR, R);
2813 sOutW(io + _INDX_ADDR, 0); /* read from SRAM, chan 0 */
2814 x = sInW(io + _INDX_DATA);
2815 sOutW(io + _INDX_ADDR, 0x4000); /* read from SRAM, chan 4 */
2816 if (x != sInW(io + _INDX_DATA)) /* if different must be 8 chan */
2822 /***************************************************************************
2824 Purpose: Initialization of a channel and channel structure
2825 Call: sInitChan(CtlP,ChP,AiopNum,ChanNum)
2826 CONTROLLER_T *CtlP; Ptr to controller structure
2827 CHANNEL_T *ChP; Ptr to channel structure
2828 int AiopNum; AIOP number within controller
2829 int ChanNum; Channel number within AIOP
2830 Return: int: 1 if initialization succeeded, 0 if it fails because channel
2831 number exceeds number of channels available in AIOP.
2832 Comments: This function must be called before a channel can be used.
2833 Warnings: No range checking on any of the parameters is done.
2835 No context switches are allowed while executing this function.
2837 static int sInitChan(CONTROLLER_T * CtlP, CHANNEL_T * ChP, int AiopNum,
2848 if (ChanNum >= CtlP->AiopNumChan[AiopNum])
2849 return 0; /* exceeds num chans in AIOP */
2851 /* Channel, AIOP, and controller identifiers */
2853 ChP->ChanID = CtlP->AiopID[AiopNum];
2854 ChP->AiopNum = AiopNum;
2855 ChP->ChanNum = ChanNum;
2857 /* Global direct addresses */
2858 AiopIO = CtlP->AiopIO[AiopNum];
2859 ChP->Cmd = (ByteIO_t) AiopIO + _CMD_REG;
2860 ChP->IntChan = (ByteIO_t) AiopIO + _INT_CHAN;
2861 ChP->IntMask = (ByteIO_t) AiopIO + _INT_MASK;
2862 ChP->IndexAddr = (DWordIO_t) AiopIO + _INDX_ADDR;
2863 ChP->IndexData = AiopIO + _INDX_DATA;
2865 /* Channel direct addresses */
2866 ChIOOff = AiopIO + ChP->ChanNum * 2;
2867 ChP->TxRxData = ChIOOff + _TD0;
2868 ChP->ChanStat = ChIOOff + _CHN_STAT0;
2869 ChP->TxRxCount = ChIOOff + _FIFO_CNT0;
2870 ChP->IntID = (ByteIO_t) AiopIO + ChP->ChanNum + _INT_ID0;
2872 /* Initialize the channel from the RData array */
2873 for (i = 0; i < RDATASIZE; i += 4) {
2875 R[1] = RData[i + 1] + 0x10 * ChanNum;
2876 R[2] = RData[i + 2];
2877 R[3] = RData[i + 3];
2878 out32(ChP->IndexAddr, R);
2882 for (i = 0; i < RREGDATASIZE; i += 4) {
2883 ChR[i] = RRegData[i];
2884 ChR[i + 1] = RRegData[i + 1] + 0x10 * ChanNum;
2885 ChR[i + 2] = RRegData[i + 2];
2886 ChR[i + 3] = RRegData[i + 3];
2889 /* Indexed registers */
2890 ChOff = (Word_t) ChanNum *0x1000;
2892 if (sClockPrescale == 0x14)
2897 ChP->BaudDiv[0] = (Byte_t) (ChOff + _BAUD);
2898 ChP->BaudDiv[1] = (Byte_t) ((ChOff + _BAUD) >> 8);
2899 ChP->BaudDiv[2] = (Byte_t) brd9600;
2900 ChP->BaudDiv[3] = (Byte_t) (brd9600 >> 8);
2901 out32(ChP->IndexAddr, ChP->BaudDiv);
2903 ChP->TxControl[0] = (Byte_t) (ChOff + _TX_CTRL);
2904 ChP->TxControl[1] = (Byte_t) ((ChOff + _TX_CTRL) >> 8);
2905 ChP->TxControl[2] = 0;
2906 ChP->TxControl[3] = 0;
2907 out32(ChP->IndexAddr, ChP->TxControl);
2909 ChP->RxControl[0] = (Byte_t) (ChOff + _RX_CTRL);
2910 ChP->RxControl[1] = (Byte_t) ((ChOff + _RX_CTRL) >> 8);
2911 ChP->RxControl[2] = 0;
2912 ChP->RxControl[3] = 0;
2913 out32(ChP->IndexAddr, ChP->RxControl);
2915 ChP->TxEnables[0] = (Byte_t) (ChOff + _TX_ENBLS);
2916 ChP->TxEnables[1] = (Byte_t) ((ChOff + _TX_ENBLS) >> 8);
2917 ChP->TxEnables[2] = 0;
2918 ChP->TxEnables[3] = 0;
2919 out32(ChP->IndexAddr, ChP->TxEnables);
2921 ChP->TxCompare[0] = (Byte_t) (ChOff + _TXCMP1);
2922 ChP->TxCompare[1] = (Byte_t) ((ChOff + _TXCMP1) >> 8);
2923 ChP->TxCompare[2] = 0;
2924 ChP->TxCompare[3] = 0;
2925 out32(ChP->IndexAddr, ChP->TxCompare);
2927 ChP->TxReplace1[0] = (Byte_t) (ChOff + _TXREP1B1);
2928 ChP->TxReplace1[1] = (Byte_t) ((ChOff + _TXREP1B1) >> 8);
2929 ChP->TxReplace1[2] = 0;
2930 ChP->TxReplace1[3] = 0;
2931 out32(ChP->IndexAddr, ChP->TxReplace1);
2933 ChP->TxReplace2[0] = (Byte_t) (ChOff + _TXREP2);
2934 ChP->TxReplace2[1] = (Byte_t) ((ChOff + _TXREP2) >> 8);
2935 ChP->TxReplace2[2] = 0;
2936 ChP->TxReplace2[3] = 0;
2937 out32(ChP->IndexAddr, ChP->TxReplace2);
2939 ChP->TxFIFOPtrs = ChOff + _TXF_OUTP;
2940 ChP->TxFIFO = ChOff + _TX_FIFO;
2942 sOutB(ChP->Cmd, (Byte_t) ChanNum | RESTXFCNT); /* apply reset Tx FIFO count */
2943 sOutB(ChP->Cmd, (Byte_t) ChanNum); /* remove reset Tx FIFO count */
2944 sOutW((WordIO_t) ChP->IndexAddr, ChP->TxFIFOPtrs); /* clear Tx in/out ptrs */
2945 sOutW(ChP->IndexData, 0);
2946 ChP->RxFIFOPtrs = ChOff + _RXF_OUTP;
2947 ChP->RxFIFO = ChOff + _RX_FIFO;
2949 sOutB(ChP->Cmd, (Byte_t) ChanNum | RESRXFCNT); /* apply reset Rx FIFO count */
2950 sOutB(ChP->Cmd, (Byte_t) ChanNum); /* remove reset Rx FIFO count */
2951 sOutW((WordIO_t) ChP->IndexAddr, ChP->RxFIFOPtrs); /* clear Rx out ptr */
2952 sOutW(ChP->IndexData, 0);
2953 sOutW((WordIO_t) ChP->IndexAddr, ChP->RxFIFOPtrs + 2); /* clear Rx in ptr */
2954 sOutW(ChP->IndexData, 0);
2955 ChP->TxPrioCnt = ChOff + _TXP_CNT;
2956 sOutW((WordIO_t) ChP->IndexAddr, ChP->TxPrioCnt);
2957 sOutB(ChP->IndexData, 0);
2958 ChP->TxPrioPtr = ChOff + _TXP_PNTR;
2959 sOutW((WordIO_t) ChP->IndexAddr, ChP->TxPrioPtr);
2960 sOutB(ChP->IndexData, 0);
2961 ChP->TxPrioBuf = ChOff + _TXP_BUF;
2962 sEnRxProcessor(ChP); /* start the Rx processor */
2967 /***************************************************************************
2968 Function: sStopRxProcessor
2969 Purpose: Stop the receive processor from processing a channel.
2970 Call: sStopRxProcessor(ChP)
2971 CHANNEL_T *ChP; Ptr to channel structure
2973 Comments: The receive processor can be started again with sStartRxProcessor().
2974 This function causes the receive processor to skip over the
2975 stopped channel. It does not stop it from processing other channels.
2977 Warnings: No context switches are allowed while executing this function.
2979 Do not leave the receive processor stopped for more than one
2982 After calling this function a delay of 4 uS is required to ensure
2983 that the receive processor is no longer processing this channel.
2985 static void sStopRxProcessor(CHANNEL_T * ChP)
2993 out32(ChP->IndexAddr, R);
2996 /***************************************************************************
2997 Function: sFlushRxFIFO
2998 Purpose: Flush the Rx FIFO
2999 Call: sFlushRxFIFO(ChP)
3000 CHANNEL_T *ChP; Ptr to channel structure
3002 Comments: To prevent data from being enqueued or dequeued in the Tx FIFO
3003 while it is being flushed the receive processor is stopped
3004 and the transmitter is disabled. After these operations a
3005 4 uS delay is done before clearing the pointers to allow
3006 the receive processor to stop. These items are handled inside
3008 Warnings: No context switches are allowed while executing this function.
3010 static void sFlushRxFIFO(CHANNEL_T * ChP)
3013 Byte_t Ch; /* channel number within AIOP */
3014 int RxFIFOEnabled; /* 1 if Rx FIFO enabled */
3016 if (sGetRxCnt(ChP) == 0) /* Rx FIFO empty */
3017 return; /* don't need to flush */
3020 if (ChP->R[0x32] == 0x08) { /* Rx FIFO is enabled */
3022 sDisRxFIFO(ChP); /* disable it */
3023 for (i = 0; i < 2000 / 200; i++) /* delay 2 uS to allow proc to disable FIFO */
3024 sInB(ChP->IntChan); /* depends on bus i/o timing */
3026 sGetChanStatus(ChP); /* clear any pending Rx errors in chan stat */
3027 Ch = (Byte_t) sGetChanNum(ChP);
3028 sOutB(ChP->Cmd, Ch | RESRXFCNT); /* apply reset Rx FIFO count */
3029 sOutB(ChP->Cmd, Ch); /* remove reset Rx FIFO count */
3030 sOutW((WordIO_t) ChP->IndexAddr, ChP->RxFIFOPtrs); /* clear Rx out ptr */
3031 sOutW(ChP->IndexData, 0);
3032 sOutW((WordIO_t) ChP->IndexAddr, ChP->RxFIFOPtrs + 2); /* clear Rx in ptr */
3033 sOutW(ChP->IndexData, 0);
3035 sEnRxFIFO(ChP); /* enable Rx FIFO */
3038 /***************************************************************************
3039 Function: sFlushTxFIFO
3040 Purpose: Flush the Tx FIFO
3041 Call: sFlushTxFIFO(ChP)
3042 CHANNEL_T *ChP; Ptr to channel structure
3044 Comments: To prevent data from being enqueued or dequeued in the Tx FIFO
3045 while it is being flushed the receive processor is stopped
3046 and the transmitter is disabled. After these operations a
3047 4 uS delay is done before clearing the pointers to allow
3048 the receive processor to stop. These items are handled inside
3050 Warnings: No context switches are allowed while executing this function.
3052 static void sFlushTxFIFO(CHANNEL_T * ChP)
3055 Byte_t Ch; /* channel number within AIOP */
3056 int TxEnabled; /* 1 if transmitter enabled */
3058 if (sGetTxCnt(ChP) == 0) /* Tx FIFO empty */
3059 return; /* don't need to flush */
3062 if (ChP->TxControl[3] & TX_ENABLE) {
3064 sDisTransmit(ChP); /* disable transmitter */
3066 sStopRxProcessor(ChP); /* stop Rx processor */
3067 for (i = 0; i < 4000 / 200; i++) /* delay 4 uS to allow proc to stop */
3068 sInB(ChP->IntChan); /* depends on bus i/o timing */
3069 Ch = (Byte_t) sGetChanNum(ChP);
3070 sOutB(ChP->Cmd, Ch | RESTXFCNT); /* apply reset Tx FIFO count */
3071 sOutB(ChP->Cmd, Ch); /* remove reset Tx FIFO count */
3072 sOutW((WordIO_t) ChP->IndexAddr, ChP->TxFIFOPtrs); /* clear Tx in/out ptrs */
3073 sOutW(ChP->IndexData, 0);
3075 sEnTransmit(ChP); /* enable transmitter */
3076 sStartRxProcessor(ChP); /* restart Rx processor */
3079 /***************************************************************************
3080 Function: sWriteTxPrioByte
3081 Purpose: Write a byte of priority transmit data to a channel
3082 Call: sWriteTxPrioByte(ChP,Data)
3083 CHANNEL_T *ChP; Ptr to channel structure
3084 Byte_t Data; The transmit data byte
3086 Return: int: 1 if the bytes is successfully written, otherwise 0.
3088 Comments: The priority byte is transmitted before any data in the Tx FIFO.
3090 Warnings: No context switches are allowed while executing this function.
3092 static int sWriteTxPrioByte(CHANNEL_T * ChP, Byte_t Data)
3094 Byte_t DWBuf[4]; /* buffer for double word writes */
3095 Word_t *WordPtr; /* must be far because Win SS != DS */
3096 register DWordIO_t IndexAddr;
3098 if (sGetTxCnt(ChP) > 1) { /* write it to Tx priority buffer */
3099 IndexAddr = ChP->IndexAddr;
3100 sOutW((WordIO_t) IndexAddr, ChP->TxPrioCnt); /* get priority buffer status */
3101 if (sInB((ByteIO_t) ChP->IndexData) & PRI_PEND) /* priority buffer busy */
3102 return (0); /* nothing sent */
3104 WordPtr = (Word_t *) (&DWBuf[0]);
3105 *WordPtr = ChP->TxPrioBuf; /* data byte address */
3107 DWBuf[2] = Data; /* data byte value */
3108 out32(IndexAddr, DWBuf); /* write it out */
3110 *WordPtr = ChP->TxPrioCnt; /* Tx priority count address */
3112 DWBuf[2] = PRI_PEND + 1; /* indicate 1 byte pending */
3113 DWBuf[3] = 0; /* priority buffer pointer */
3114 out32(IndexAddr, DWBuf); /* write it out */
3115 } else { /* write it to Tx FIFO */
3117 sWriteTxByte(sGetTxRxDataIO(ChP), Data);
3119 return (1); /* 1 byte sent */
3122 /***************************************************************************
3123 Function: sEnInterrupts
3124 Purpose: Enable one or more interrupts for a channel
3125 Call: sEnInterrupts(ChP,Flags)
3126 CHANNEL_T *ChP; Ptr to channel structure
3127 Word_t Flags: Interrupt enable flags, can be any combination
3128 of the following flags:
3129 TXINT_EN: Interrupt on Tx FIFO empty
3130 RXINT_EN: Interrupt on Rx FIFO at trigger level (see
3132 SRCINT_EN: Interrupt on SRC (Special Rx Condition)
3133 MCINT_EN: Interrupt on modem input change
3134 CHANINT_EN: Allow channel interrupt signal to the AIOP's
3135 Interrupt Channel Register.
3137 Comments: If an interrupt enable flag is set in Flags, that interrupt will be
3138 enabled. If an interrupt enable flag is not set in Flags, that
3139 interrupt will not be changed. Interrupts can be disabled with
3140 function sDisInterrupts().
3142 This function sets the appropriate bit for the channel in the AIOP's
3143 Interrupt Mask Register if the CHANINT_EN flag is set. This allows
3144 this channel's bit to be set in the AIOP's Interrupt Channel Register.
3146 Interrupts must also be globally enabled before channel interrupts
3147 will be passed on to the host. This is done with function
3150 In some cases it may be desirable to disable interrupts globally but
3151 enable channel interrupts. This would allow the global interrupt
3152 status register to be used to determine which AIOPs need service.
3154 static void sEnInterrupts(CHANNEL_T * ChP, Word_t Flags)
3156 Byte_t Mask; /* Interrupt Mask Register */
3158 ChP->RxControl[2] |=
3159 ((Byte_t) Flags & (RXINT_EN | SRCINT_EN | MCINT_EN));
3161 out32(ChP->IndexAddr, ChP->RxControl);
3163 ChP->TxControl[2] |= ((Byte_t) Flags & TXINT_EN);
3165 out32(ChP->IndexAddr, ChP->TxControl);
3167 if (Flags & CHANINT_EN) {
3168 Mask = sInB(ChP->IntMask) | sBitMapSetTbl[ChP->ChanNum];
3169 sOutB(ChP->IntMask, Mask);
3173 /***************************************************************************
3174 Function: sDisInterrupts
3175 Purpose: Disable one or more interrupts for a channel
3176 Call: sDisInterrupts(ChP,Flags)
3177 CHANNEL_T *ChP; Ptr to channel structure
3178 Word_t Flags: Interrupt flags, can be any combination
3179 of the following flags:
3180 TXINT_EN: Interrupt on Tx FIFO empty
3181 RXINT_EN: Interrupt on Rx FIFO at trigger level (see
3183 SRCINT_EN: Interrupt on SRC (Special Rx Condition)
3184 MCINT_EN: Interrupt on modem input change
3185 CHANINT_EN: Disable channel interrupt signal to the
3186 AIOP's Interrupt Channel Register.
3188 Comments: If an interrupt flag is set in Flags, that interrupt will be
3189 disabled. If an interrupt flag is not set in Flags, that
3190 interrupt will not be changed. Interrupts can be enabled with
3191 function sEnInterrupts().
3193 This function clears the appropriate bit for the channel in the AIOP's
3194 Interrupt Mask Register if the CHANINT_EN flag is set. This blocks
3195 this channel's bit from being set in the AIOP's Interrupt Channel
3198 static void sDisInterrupts(CHANNEL_T * ChP, Word_t Flags)
3200 Byte_t Mask; /* Interrupt Mask Register */
3202 ChP->RxControl[2] &=
3203 ~((Byte_t) Flags & (RXINT_EN | SRCINT_EN | MCINT_EN));
3204 out32(ChP->IndexAddr, ChP->RxControl);
3205 ChP->TxControl[2] &= ~((Byte_t) Flags & TXINT_EN);
3206 out32(ChP->IndexAddr, ChP->TxControl);
3208 if (Flags & CHANINT_EN) {
3209 Mask = sInB(ChP->IntMask) & sBitMapClrTbl[ChP->ChanNum];
3210 sOutB(ChP->IntMask, Mask);
3214 static void sSetInterfaceMode(CHANNEL_T * ChP, Byte_t mode)
3216 sOutB(ChP->CtlP->AiopIO[2], (mode & 0x18) | ChP->ChanNum);
3220 * Not an official SSCI function, but how to reset RocketModems.
3223 static void sModemReset(CONTROLLER_T * CtlP, int chan, int on)
3228 addr = CtlP->AiopIO[0] + 0x400;
3229 val = sInB(CtlP->MReg3IO);
3230 /* if AIOP[1] is not enabled, enable it */
3231 if ((val & 2) == 0) {
3232 val = sInB(CtlP->MReg2IO);
3233 sOutB(CtlP->MReg2IO, (val & 0xfc) | (1 & 0x03));
3234 sOutB(CtlP->MBaseIO, (unsigned char) (addr >> 6));
3240 sOutB(addr + chan, 0); /* apply or remove reset */
3245 * Not an official SSCI function, but how to reset RocketModems.
3248 static void sPCIModemReset(CONTROLLER_T * CtlP, int chan, int on)
3252 addr = CtlP->AiopIO[0] + 0x40; /* 2nd AIOP */
3255 sOutB(addr + chan, 0); /* apply or remove reset */
3258 /* Resets the speaker controller on RocketModem II and III devices */
3259 static void rmSpeakerReset(CONTROLLER_T * CtlP, unsigned long model)
3263 /* RocketModem II speaker control is at the 8th port location of offset 0x40 */
3264 if ((model == MODEL_RP4M) || (model == MODEL_RP6M)) {
3265 addr = CtlP->AiopIO[0] + 0x4F;
3269 /* RocketModem III speaker control is at the 1st port location of offset 0x80 */
3270 if ((model == MODEL_UPCI_RM3_8PORT)
3271 || (model == MODEL_UPCI_RM3_4PORT)) {
3272 addr = CtlP->AiopIO[0] + 0x88;
3277 /* Returns the line number given the controller (board), aiop and channel number */
3278 static unsigned char GetLineNumber(int ctrl, int aiop, int ch)
3280 return lineNumbers[(ctrl << 5) | (aiop << 3) | ch];
3284 * Stores the line number associated with a given controller (board), aiop
3285 * and channel number.
3286 * Returns: The line number assigned
3288 static unsigned char SetLineNumber(int ctrl, int aiop, int ch)
3290 lineNumbers[(ctrl << 5) | (aiop << 3) | ch] = nextLineNumber++;
3291 return (nextLineNumber - 1);