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 #ifdef PCI_NUM_RESOURCES
44 #define PCI_BASE_ADDRESS(dev, r) ((dev)->resource[r].start)
46 #define PCI_BASE_ADDRESS(dev, r) ((dev)->base_address[r])
49 #define ROCKET_PARANOIA_CHECK
50 #define ROCKET_DISABLE_SIMUSAGE
52 #undef ROCKET_SOFT_FLOW
53 #undef ROCKET_DEBUG_OPEN
54 #undef ROCKET_DEBUG_INTR
55 #undef ROCKET_DEBUG_WRITE
56 #undef ROCKET_DEBUG_FLOW
57 #undef ROCKET_DEBUG_THROTTLE
58 #undef ROCKET_DEBUG_WAIT_UNTIL_SENT
59 #undef ROCKET_DEBUG_RECEIVE
60 #undef ROCKET_DEBUG_HANGUP
62 #undef ROCKET_DEBUG_IO
64 #define POLL_PERIOD HZ/100 /* Polling period .01 seconds (10ms) */
66 /****** Kernel includes ******/
69 #include <config/modversions.h>
72 #include <linux/module.h>
73 #include <linux/errno.h>
74 #include <linux/major.h>
75 #include <linux/kernel.h>
76 #include <linux/signal.h>
77 #include <linux/slab.h>
79 #include <linux/sched.h>
80 #include <linux/timer.h>
81 #include <linux/interrupt.h>
82 #include <linux/tty.h>
83 #include <linux/tty_driver.h>
84 #include <linux/tty_flip.h>
85 #include <linux/string.h>
86 #include <linux/fcntl.h>
87 #include <linux/ptrace.h>
88 #include <linux/ioport.h>
89 #include <linux/delay.h>
90 #include <linux/wait.h>
91 #include <linux/pci.h>
92 #include <asm/uaccess.h>
93 #include <asm/atomic.h>
94 #include <linux/bitops.h>
95 #include <linux/spinlock.h>
96 #include <asm/semaphore.h>
97 #include <linux/init.h>
99 /****** RocketPort includes ******/
101 #include "rocket_int.h"
104 #define ROCKET_VERSION "2.09"
105 #define ROCKET_DATE "12-June-2003"
107 /****** RocketPort Local Variables ******/
109 static struct tty_driver *rocket_driver;
111 static struct rocket_version driver_version = {
112 ROCKET_VERSION, ROCKET_DATE
115 static struct r_port *rp_table[MAX_RP_PORTS]; /* The main repository of serial port state information. */
116 static unsigned int xmit_flags[NUM_BOARDS]; /* Bit significant, indicates port had data to transmit. */
117 /* eg. Bit 0 indicates port 0 has xmit data, ... */
118 static atomic_t rp_num_ports_open; /* Number of serial ports open */
119 static struct timer_list rocket_timer;
121 static unsigned long board1; /* ISA addresses, retrieved from rocketport.conf */
122 static unsigned long board2;
123 static unsigned long board3;
124 static unsigned long board4;
125 static unsigned long controller;
126 static int support_low_speed;
127 static unsigned long modem1;
128 static unsigned long modem2;
129 static unsigned long modem3;
130 static unsigned long modem4;
131 static unsigned long pc104_1[8];
132 static unsigned long pc104_2[8];
133 static unsigned long pc104_3[8];
134 static unsigned long pc104_4[8];
135 static unsigned long *pc104[4] = { pc104_1, pc104_2, pc104_3, pc104_4 };
137 static int rp_baud_base[NUM_BOARDS]; /* Board config info (Someday make a per-board structure) */
138 static unsigned long rcktpt_io_addr[NUM_BOARDS];
139 static int rcktpt_type[NUM_BOARDS];
140 static int is_PCI[NUM_BOARDS];
141 static rocketModel_t rocketModel[NUM_BOARDS];
142 static int max_board;
145 * The following arrays define the interrupt bits corresponding to each AIOP.
146 * These bits are different between the ISA and regular PCI boards and the
147 * Universal PCI boards.
150 static Word_t aiop_intr_bits[AIOP_CTL_SIZE] = {
157 static Word_t upci_aiop_intr_bits[AIOP_CTL_SIZE] = {
158 UPCI_AIOP_INTR_BIT_0,
159 UPCI_AIOP_INTR_BIT_1,
160 UPCI_AIOP_INTR_BIT_2,
164 static Byte_t RData[RDATASIZE] = {
165 0x00, 0x09, 0xf6, 0x82,
166 0x02, 0x09, 0x86, 0xfb,
167 0x04, 0x09, 0x00, 0x0a,
168 0x06, 0x09, 0x01, 0x0a,
169 0x08, 0x09, 0x8a, 0x13,
170 0x0a, 0x09, 0xc5, 0x11,
171 0x0c, 0x09, 0x86, 0x85,
172 0x0e, 0x09, 0x20, 0x0a,
173 0x10, 0x09, 0x21, 0x0a,
174 0x12, 0x09, 0x41, 0xff,
175 0x14, 0x09, 0x82, 0x00,
176 0x16, 0x09, 0x82, 0x7b,
177 0x18, 0x09, 0x8a, 0x7d,
178 0x1a, 0x09, 0x88, 0x81,
179 0x1c, 0x09, 0x86, 0x7a,
180 0x1e, 0x09, 0x84, 0x81,
181 0x20, 0x09, 0x82, 0x7c,
182 0x22, 0x09, 0x0a, 0x0a
185 static Byte_t RRegData[RREGDATASIZE] = {
186 0x00, 0x09, 0xf6, 0x82, /* 00: Stop Rx processor */
187 0x08, 0x09, 0x8a, 0x13, /* 04: Tx software flow control */
188 0x0a, 0x09, 0xc5, 0x11, /* 08: XON char */
189 0x0c, 0x09, 0x86, 0x85, /* 0c: XANY */
190 0x12, 0x09, 0x41, 0xff, /* 10: Rx mask char */
191 0x14, 0x09, 0x82, 0x00, /* 14: Compare/Ignore #0 */
192 0x16, 0x09, 0x82, 0x7b, /* 18: Compare #1 */
193 0x18, 0x09, 0x8a, 0x7d, /* 1c: Compare #2 */
194 0x1a, 0x09, 0x88, 0x81, /* 20: Interrupt #1 */
195 0x1c, 0x09, 0x86, 0x7a, /* 24: Ignore/Replace #1 */
196 0x1e, 0x09, 0x84, 0x81, /* 28: Interrupt #2 */
197 0x20, 0x09, 0x82, 0x7c, /* 2c: Ignore/Replace #2 */
198 0x22, 0x09, 0x0a, 0x0a /* 30: Rx FIFO Enable */
201 static CONTROLLER_T sController[CTL_SIZE] = {
202 {-1, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, {0, 0, 0, 0},
203 {0, 0, 0, 0}, {-1, -1, -1, -1}, {0, 0, 0, 0}},
204 {-1, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, {0, 0, 0, 0},
205 {0, 0, 0, 0}, {-1, -1, -1, -1}, {0, 0, 0, 0}},
206 {-1, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, {0, 0, 0, 0},
207 {0, 0, 0, 0}, {-1, -1, -1, -1}, {0, 0, 0, 0}},
208 {-1, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, {0, 0, 0, 0},
209 {0, 0, 0, 0}, {-1, -1, -1, -1}, {0, 0, 0, 0}}
212 static Byte_t sBitMapClrTbl[8] = {
213 0xfe, 0xfd, 0xfb, 0xf7, 0xef, 0xdf, 0xbf, 0x7f
216 static Byte_t sBitMapSetTbl[8] = {
217 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80
220 static int sClockPrescale = 0x14;
223 * Line number is the ttySIx number (x), the Minor number. We
224 * assign them sequentially, starting at zero. The following
225 * array keeps track of the line number assigned to a given board/aiop/channel.
227 static unsigned char lineNumbers[MAX_RP_PORTS];
228 static unsigned long nextLineNumber;
230 /***** RocketPort Static Prototypes *********/
231 static int __init init_ISA(int i);
232 static void rp_wait_until_sent(struct tty_struct *tty, int timeout);
233 static void rp_flush_buffer(struct tty_struct *tty);
234 static void rmSpeakerReset(CONTROLLER_T * CtlP, unsigned long model);
235 static unsigned char GetLineNumber(int ctrl, int aiop, int ch);
236 static unsigned char SetLineNumber(int ctrl, int aiop, int ch);
237 static void rp_start(struct tty_struct *tty);
238 static int sInitChan(CONTROLLER_T * CtlP, CHANNEL_T * ChP, int AiopNum,
240 static void sSetInterfaceMode(CHANNEL_T * ChP, Byte_t mode);
241 static void sFlushRxFIFO(CHANNEL_T * ChP);
242 static void sFlushTxFIFO(CHANNEL_T * ChP);
243 static void sEnInterrupts(CHANNEL_T * ChP, Word_t Flags);
244 static void sDisInterrupts(CHANNEL_T * ChP, Word_t Flags);
245 static void sModemReset(CONTROLLER_T * CtlP, int chan, int on);
246 static void sPCIModemReset(CONTROLLER_T * CtlP, int chan, int on);
247 static int sWriteTxPrioByte(CHANNEL_T * ChP, Byte_t Data);
248 static int sPCIInitController(CONTROLLER_T * CtlP, int CtlNum,
249 ByteIO_t * AiopIOList, int AiopIOListSize,
250 WordIO_t ConfigIO, int IRQNum, Byte_t Frequency,
251 int PeriodicOnly, int altChanRingIndicator,
253 static int sInitController(CONTROLLER_T * CtlP, int CtlNum, ByteIO_t MudbacIO,
254 ByteIO_t * AiopIOList, int AiopIOListSize,
255 int IRQNum, Byte_t Frequency, int PeriodicOnly);
256 static int sReadAiopID(ByteIO_t io);
257 static int sReadAiopNumChan(WordIO_t io);
259 MODULE_AUTHOR("Theodore Ts'o");
260 MODULE_DESCRIPTION("Comtrol RocketPort driver");
261 module_param(board1, ulong, 0);
262 MODULE_PARM_DESC(board1, "I/O port for (ISA) board #1");
263 module_param(board2, ulong, 0);
264 MODULE_PARM_DESC(board2, "I/O port for (ISA) board #2");
265 module_param(board3, ulong, 0);
266 MODULE_PARM_DESC(board3, "I/O port for (ISA) board #3");
267 module_param(board4, ulong, 0);
268 MODULE_PARM_DESC(board4, "I/O port for (ISA) board #4");
269 module_param(controller, ulong, 0);
270 MODULE_PARM_DESC(controller, "I/O port for (ISA) rocketport controller");
271 module_param(support_low_speed, bool, 0);
272 MODULE_PARM_DESC(support_low_speed, "1 means support 50 baud, 0 means support 460400 baud");
273 module_param(modem1, ulong, 0);
274 MODULE_PARM_DESC(modem1, "1 means (ISA) board #1 is a RocketModem");
275 module_param(modem2, ulong, 0);
276 MODULE_PARM_DESC(modem2, "1 means (ISA) board #2 is a RocketModem");
277 module_param(modem3, ulong, 0);
278 MODULE_PARM_DESC(modem3, "1 means (ISA) board #3 is a RocketModem");
279 module_param(modem4, ulong, 0);
280 MODULE_PARM_DESC(modem4, "1 means (ISA) board #4 is a RocketModem");
281 module_param_array(pc104_1, ulong, NULL, 0);
282 MODULE_PARM_DESC(pc104_1, "set interface types for ISA(PC104) board #1 (e.g. pc104_1=232,232,485,485,...");
283 module_param_array(pc104_2, ulong, NULL, 0);
284 MODULE_PARM_DESC(pc104_2, "set interface types for ISA(PC104) board #2 (e.g. pc104_2=232,232,485,485,...");
285 module_param_array(pc104_3, ulong, NULL, 0);
286 MODULE_PARM_DESC(pc104_3, "set interface types for ISA(PC104) board #3 (e.g. pc104_3=232,232,485,485,...");
287 module_param_array(pc104_4, ulong, NULL, 0);
288 MODULE_PARM_DESC(pc104_4, "set interface types for ISA(PC104) board #4 (e.g. pc104_4=232,232,485,485,...");
290 static int rp_init(void);
291 static void rp_cleanup_module(void);
293 module_init(rp_init);
294 module_exit(rp_cleanup_module);
297 MODULE_LICENSE("Dual BSD/GPL");
299 /*************************************************************************/
300 /* Module code starts here */
302 static inline int rocket_paranoia_check(struct r_port *info,
305 #ifdef ROCKET_PARANOIA_CHECK
308 if (info->magic != RPORT_MAGIC) {
309 printk(KERN_INFO "Warning: bad magic number for rocketport struct in %s\n",
318 /* Serial port receive data function. Called (from timer poll) when an AIOPIC signals
319 * that receive data is present on a serial port. Pulls data from FIFO, moves it into the
322 static void rp_do_receive(struct r_port *info,
323 struct tty_struct *tty,
324 CHANNEL_t * cp, unsigned int ChanStatus)
326 unsigned int CharNStat;
327 int ToRecv, wRecv, space;
330 ToRecv = sGetRxCnt(cp);
331 #ifdef ROCKET_DEBUG_INTR
332 printk(KERN_INFO "rp_do_receive(%d)...", ToRecv);
338 * if status indicates there are errored characters in the
339 * FIFO, then enter status mode (a word in FIFO holds
340 * character and status).
342 if (ChanStatus & (RXFOVERFL | RXBREAK | RXFRAME | RXPARITY)) {
343 if (!(ChanStatus & STATMODE)) {
344 #ifdef ROCKET_DEBUG_RECEIVE
345 printk(KERN_INFO "Entering STATMODE...");
347 ChanStatus |= STATMODE;
353 * if we previously entered status mode, then read down the
354 * FIFO one word at a time, pulling apart the character and
355 * the status. Update error counters depending on status
357 if (ChanStatus & STATMODE) {
358 #ifdef ROCKET_DEBUG_RECEIVE
359 printk(KERN_INFO "Ignore %x, read %x...", info->ignore_status_mask,
360 info->read_status_mask);
365 CharNStat = sInW(sGetTxRxDataIO(cp));
366 #ifdef ROCKET_DEBUG_RECEIVE
367 printk(KERN_INFO "%x...", CharNStat);
369 if (CharNStat & STMBREAKH)
370 CharNStat &= ~(STMFRAMEH | STMPARITYH);
371 if (CharNStat & info->ignore_status_mask) {
375 CharNStat &= info->read_status_mask;
376 if (CharNStat & STMBREAKH)
378 else if (CharNStat & STMPARITYH)
380 else if (CharNStat & STMFRAMEH)
382 else if (CharNStat & STMRCVROVRH)
386 tty_insert_flip_char(tty, CharNStat & 0xff, flag);
391 * after we've emptied the FIFO in status mode, turn
392 * status mode back off
394 if (sGetRxCnt(cp) == 0) {
395 #ifdef ROCKET_DEBUG_RECEIVE
396 printk(KERN_INFO "Status mode off.\n");
398 sDisRxStatusMode(cp);
402 * we aren't in status mode, so read down the FIFO two
403 * characters at time by doing repeated word IO
406 space = tty_prepare_flip_string(tty, &cbuf, ToRecv);
407 if (space < ToRecv) {
408 #ifdef ROCKET_DEBUG_RECEIVE
409 printk(KERN_INFO "rp_do_receive:insufficient space ToRecv=%d space=%d\n", ToRecv, space);
417 sInStrW(sGetTxRxDataIO(cp), (unsigned short *) cbuf, wRecv);
419 cbuf[ToRecv - 1] = sInB(sGetTxRxDataIO(cp));
421 /* Push the data up to the tty layer */
422 tty_flip_buffer_push(tty);
426 * Serial port transmit data function. Called from the timer polling loop as a
427 * result of a bit set in xmit_flags[], indicating data (from the tty layer) is ready
428 * to be sent out the serial port. Data is buffered in rp_table[line].xmit_buf, it is
429 * moved to the port's xmit FIFO. *info is critical data, protected by spinlocks.
431 static void rp_do_transmit(struct r_port *info)
434 CHANNEL_t *cp = &info->channel;
435 struct tty_struct *tty;
438 #ifdef ROCKET_DEBUG_INTR
439 printk(KERN_INFO "rp_do_transmit ");
444 printk(KERN_INFO "rp: WARNING rp_do_transmit called with info->tty==NULL\n");
445 clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
449 spin_lock_irqsave(&info->slock, flags);
451 info->xmit_fifo_room = TXFIFO_SIZE - sGetTxCnt(cp);
453 /* Loop sending data to FIFO until done or FIFO full */
455 if (tty->stopped || tty->hw_stopped)
457 c = min(info->xmit_fifo_room, min(info->xmit_cnt, XMIT_BUF_SIZE - info->xmit_tail));
458 if (c <= 0 || info->xmit_fifo_room <= 0)
460 sOutStrW(sGetTxRxDataIO(cp), (unsigned short *) (info->xmit_buf + info->xmit_tail), c / 2);
462 sOutB(sGetTxRxDataIO(cp), info->xmit_buf[info->xmit_tail + c - 1]);
463 info->xmit_tail += c;
464 info->xmit_tail &= XMIT_BUF_SIZE - 1;
466 info->xmit_fifo_room -= c;
467 #ifdef ROCKET_DEBUG_INTR
468 printk(KERN_INFO "tx %d chars...", c);
472 if (info->xmit_cnt == 0)
473 clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
475 if (info->xmit_cnt < WAKEUP_CHARS) {
477 #ifdef ROCKETPORT_HAVE_POLL_WAIT
478 wake_up_interruptible(&tty->poll_wait);
482 spin_unlock_irqrestore(&info->slock, flags);
484 #ifdef ROCKET_DEBUG_INTR
485 printk(KERN_INFO "(%d,%d,%d,%d)...", info->xmit_cnt, info->xmit_head,
486 info->xmit_tail, info->xmit_fifo_room);
491 * Called when a serial port signals it has read data in it's RX FIFO.
492 * It checks what interrupts are pending and services them, including
493 * receiving serial data.
495 static void rp_handle_port(struct r_port *info)
498 struct tty_struct *tty;
499 unsigned int IntMask, ChanStatus;
504 if ((info->flags & ROCKET_INITIALIZED) == 0) {
505 printk(KERN_INFO "rp: WARNING: rp_handle_port called with info->flags & NOT_INIT\n");
509 printk(KERN_INFO "rp: WARNING: rp_handle_port called with info->tty==NULL\n");
515 IntMask = sGetChanIntID(cp) & info->intmask;
516 #ifdef ROCKET_DEBUG_INTR
517 printk(KERN_INFO "rp_interrupt %02x...", IntMask);
519 ChanStatus = sGetChanStatus(cp);
520 if (IntMask & RXF_TRIG) { /* Rx FIFO trigger level */
521 rp_do_receive(info, tty, cp, ChanStatus);
523 if (IntMask & DELTA_CD) { /* CD change */
524 #if (defined(ROCKET_DEBUG_OPEN) || defined(ROCKET_DEBUG_INTR) || defined(ROCKET_DEBUG_HANGUP))
525 printk(KERN_INFO "ttyR%d CD now %s...", info->line,
526 (ChanStatus & CD_ACT) ? "on" : "off");
528 if (!(ChanStatus & CD_ACT) && info->cd_status) {
529 #ifdef ROCKET_DEBUG_HANGUP
530 printk(KERN_INFO "CD drop, calling hangup.\n");
534 info->cd_status = (ChanStatus & CD_ACT) ? 1 : 0;
535 wake_up_interruptible(&info->open_wait);
537 #ifdef ROCKET_DEBUG_INTR
538 if (IntMask & DELTA_CTS) { /* CTS change */
539 printk(KERN_INFO "CTS change...\n");
541 if (IntMask & DELTA_DSR) { /* DSR change */
542 printk(KERN_INFO "DSR change...\n");
548 * The top level polling routine. Repeats every 1/100 HZ (10ms).
550 static void rp_do_poll(unsigned long dummy)
553 int ctrl, aiop, ch, line, i;
554 unsigned int xmitmask;
555 unsigned int CtlMask;
556 unsigned char AiopMask;
559 /* Walk through all the boards (ctrl's) */
560 for (ctrl = 0; ctrl < max_board; ctrl++) {
561 if (rcktpt_io_addr[ctrl] <= 0)
564 /* Get a ptr to the board's control struct */
565 ctlp = sCtlNumToCtlPtr(ctrl);
567 /* Get the interupt status from the board */
569 if (ctlp->BusType == isPCI)
570 CtlMask = sPCIGetControllerIntStatus(ctlp);
573 CtlMask = sGetControllerIntStatus(ctlp);
575 /* Check if any AIOP read bits are set */
576 for (aiop = 0; CtlMask; aiop++) {
577 bit = ctlp->AiopIntrBits[aiop];
580 AiopMask = sGetAiopIntStatus(ctlp, aiop);
582 /* Check if any port read bits are set */
583 for (ch = 0; AiopMask; AiopMask >>= 1, ch++) {
586 /* Get the line number (/dev/ttyRx number). */
587 /* Read the data from the port. */
588 line = GetLineNumber(ctrl, aiop, ch);
589 rp_handle_port(rp_table[line]);
595 xmitmask = xmit_flags[ctrl];
598 * xmit_flags contains bit-significant flags, indicating there is data
599 * to xmit on the port. Bit 0 is port 0 on this board, bit 1 is port
600 * 1, ... (32 total possible). The variable i has the aiop and ch
601 * numbers encoded in it (port 0-7 are aiop0, 8-15 are aiop1, etc).
604 for (i = 0; i < rocketModel[ctrl].numPorts; i++) {
605 if (xmitmask & (1 << i)) {
606 aiop = (i & 0x18) >> 3;
608 line = GetLineNumber(ctrl, aiop, ch);
609 rp_do_transmit(rp_table[line]);
616 * Reset the timer so we get called at the next clock tick (10ms).
618 if (atomic_read(&rp_num_ports_open))
619 mod_timer(&rocket_timer, jiffies + POLL_PERIOD);
623 * Initializes the r_port structure for a port, as well as enabling the port on
625 * Inputs: board, aiop, chan numbers
627 static void init_r_port(int board, int aiop, int chan, struct pci_dev *pci_dev)
634 /* Get the next available line number */
635 line = SetLineNumber(board, aiop, chan);
637 ctlp = sCtlNumToCtlPtr(board);
639 /* Get a r_port struct for the port, fill it in and save it globally, indexed by line number */
640 info = kmalloc(sizeof (struct r_port), GFP_KERNEL);
642 printk(KERN_INFO "Couldn't allocate info struct for line #%d\n", line);
645 memset(info, 0, sizeof (struct r_port));
647 info->magic = RPORT_MAGIC;
653 info->closing_wait = 3000;
654 info->close_delay = 50;
655 init_waitqueue_head(&info->open_wait);
656 init_waitqueue_head(&info->close_wait);
657 info->flags &= ~ROCKET_MODE_MASK;
658 switch (pc104[board][line]) {
660 info->flags |= ROCKET_MODE_RS422;
663 info->flags |= ROCKET_MODE_RS485;
667 info->flags |= ROCKET_MODE_RS232;
671 info->intmask = RXF_TRIG | TXFIFO_MT | SRC_INT | DELTA_CD | DELTA_CTS | DELTA_DSR;
672 if (sInitChan(ctlp, &info->channel, aiop, chan) == 0) {
673 printk(KERN_INFO "RocketPort sInitChan(%d, %d, %d) failed!\n", board, aiop, chan);
678 rocketMode = info->flags & ROCKET_MODE_MASK;
680 if ((info->flags & ROCKET_RTS_TOGGLE) || (rocketMode == ROCKET_MODE_RS485))
681 sEnRTSToggle(&info->channel);
683 sDisRTSToggle(&info->channel);
685 if (ctlp->boardType == ROCKET_TYPE_PC104) {
686 switch (rocketMode) {
687 case ROCKET_MODE_RS485:
688 sSetInterfaceMode(&info->channel, InterfaceModeRS485);
690 case ROCKET_MODE_RS422:
691 sSetInterfaceMode(&info->channel, InterfaceModeRS422);
693 case ROCKET_MODE_RS232:
695 if (info->flags & ROCKET_RTS_TOGGLE)
696 sSetInterfaceMode(&info->channel, InterfaceModeRS232T);
698 sSetInterfaceMode(&info->channel, InterfaceModeRS232);
702 spin_lock_init(&info->slock);
703 sema_init(&info->write_sem, 1);
704 rp_table[line] = info;
706 tty_register_device(rocket_driver, line, &pci_dev->dev);
710 * Configures a rocketport port according to its termio settings. Called from
711 * user mode into the driver (exception handler). *info CD manipulation is spinlock protected.
713 static void configure_r_port(struct r_port *info,
714 struct ktermios *old_termios)
719 int bits, baud, divisor;
722 if (!info->tty || !info->tty->termios)
725 cflag = info->tty->termios->c_cflag;
727 /* Byte size and parity */
728 if ((cflag & CSIZE) == CS8) {
735 if (cflag & CSTOPB) {
742 if (cflag & PARENB) {
745 if (cflag & PARODD) {
755 baud = tty_get_baud_rate(info->tty);
758 divisor = ((rp_baud_base[info->board] + (baud >> 1)) / baud) - 1;
759 if ((divisor >= 8192 || divisor < 0) && old_termios) {
760 info->tty->termios->c_cflag &= ~CBAUD;
761 info->tty->termios->c_cflag |=
762 (old_termios->c_cflag & CBAUD);
763 baud = tty_get_baud_rate(info->tty);
766 divisor = (rp_baud_base[info->board] / baud) - 1;
768 if (divisor >= 8192 || divisor < 0) {
770 divisor = (rp_baud_base[info->board] / baud) - 1;
772 info->cps = baud / bits;
773 sSetBaud(cp, divisor);
775 if (cflag & CRTSCTS) {
776 info->intmask |= DELTA_CTS;
779 info->intmask &= ~DELTA_CTS;
782 if (cflag & CLOCAL) {
783 info->intmask &= ~DELTA_CD;
785 spin_lock_irqsave(&info->slock, flags);
786 if (sGetChanStatus(cp) & CD_ACT)
790 info->intmask |= DELTA_CD;
791 spin_unlock_irqrestore(&info->slock, flags);
795 * Handle software flow control in the board
797 #ifdef ROCKET_SOFT_FLOW
798 if (I_IXON(info->tty)) {
799 sEnTxSoftFlowCtl(cp);
800 if (I_IXANY(info->tty)) {
805 sSetTxXONChar(cp, START_CHAR(info->tty));
806 sSetTxXOFFChar(cp, STOP_CHAR(info->tty));
808 sDisTxSoftFlowCtl(cp);
815 * Set up ignore/read mask words
817 info->read_status_mask = STMRCVROVRH | 0xFF;
818 if (I_INPCK(info->tty))
819 info->read_status_mask |= STMFRAMEH | STMPARITYH;
820 if (I_BRKINT(info->tty) || I_PARMRK(info->tty))
821 info->read_status_mask |= STMBREAKH;
824 * Characters to ignore
826 info->ignore_status_mask = 0;
827 if (I_IGNPAR(info->tty))
828 info->ignore_status_mask |= STMFRAMEH | STMPARITYH;
829 if (I_IGNBRK(info->tty)) {
830 info->ignore_status_mask |= STMBREAKH;
832 * If we're ignoring parity and break indicators,
833 * ignore overruns too. (For real raw support).
835 if (I_IGNPAR(info->tty))
836 info->ignore_status_mask |= STMRCVROVRH;
839 rocketMode = info->flags & ROCKET_MODE_MASK;
841 if ((info->flags & ROCKET_RTS_TOGGLE)
842 || (rocketMode == ROCKET_MODE_RS485))
847 sSetRTS(&info->channel);
849 if (cp->CtlP->boardType == ROCKET_TYPE_PC104) {
850 switch (rocketMode) {
851 case ROCKET_MODE_RS485:
852 sSetInterfaceMode(cp, InterfaceModeRS485);
854 case ROCKET_MODE_RS422:
855 sSetInterfaceMode(cp, InterfaceModeRS422);
857 case ROCKET_MODE_RS232:
859 if (info->flags & ROCKET_RTS_TOGGLE)
860 sSetInterfaceMode(cp, InterfaceModeRS232T);
862 sSetInterfaceMode(cp, InterfaceModeRS232);
868 /* info->count is considered critical, protected by spinlocks. */
869 static int block_til_ready(struct tty_struct *tty, struct file *filp,
872 DECLARE_WAITQUEUE(wait, current);
874 int do_clocal = 0, extra_count = 0;
878 * If the device is in the middle of being closed, then block
879 * until it's done, and then try again.
881 if (tty_hung_up_p(filp))
882 return ((info->flags & ROCKET_HUP_NOTIFY) ? -EAGAIN : -ERESTARTSYS);
883 if (info->flags & ROCKET_CLOSING) {
884 interruptible_sleep_on(&info->close_wait);
885 return ((info->flags & ROCKET_HUP_NOTIFY) ? -EAGAIN : -ERESTARTSYS);
889 * If non-blocking mode is set, or the port is not enabled,
890 * then make the check up front and then exit.
892 if ((filp->f_flags & O_NONBLOCK) || (tty->flags & (1 << TTY_IO_ERROR))) {
893 info->flags |= ROCKET_NORMAL_ACTIVE;
896 if (tty->termios->c_cflag & CLOCAL)
900 * Block waiting for the carrier detect and the line to become free. While we are in
901 * this loop, info->count is dropped by one, so that rp_close() knows when to free things.
902 * We restore it upon exit, either normal or abnormal.
905 add_wait_queue(&info->open_wait, &wait);
906 #ifdef ROCKET_DEBUG_OPEN
907 printk(KERN_INFO "block_til_ready before block: ttyR%d, count = %d\n", info->line, info->count);
909 spin_lock_irqsave(&info->slock, flags);
911 #ifdef ROCKET_DISABLE_SIMUSAGE
912 info->flags |= ROCKET_NORMAL_ACTIVE;
914 if (!tty_hung_up_p(filp)) {
919 info->blocked_open++;
921 spin_unlock_irqrestore(&info->slock, flags);
924 if (tty->termios->c_cflag & CBAUD) {
925 sSetDTR(&info->channel);
926 sSetRTS(&info->channel);
928 set_current_state(TASK_INTERRUPTIBLE);
929 if (tty_hung_up_p(filp) || !(info->flags & ROCKET_INITIALIZED)) {
930 if (info->flags & ROCKET_HUP_NOTIFY)
933 retval = -ERESTARTSYS;
936 if (!(info->flags & ROCKET_CLOSING) && (do_clocal || (sGetChanStatusLo(&info->channel) & CD_ACT)))
938 if (signal_pending(current)) {
939 retval = -ERESTARTSYS;
942 #ifdef ROCKET_DEBUG_OPEN
943 printk(KERN_INFO "block_til_ready blocking: ttyR%d, count = %d, flags=0x%0x\n",
944 info->line, info->count, info->flags);
946 schedule(); /* Don't hold spinlock here, will hang PC */
948 current->state = TASK_RUNNING;
949 remove_wait_queue(&info->open_wait, &wait);
951 spin_lock_irqsave(&info->slock, flags);
955 info->blocked_open--;
957 spin_unlock_irqrestore(&info->slock, flags);
959 #ifdef ROCKET_DEBUG_OPEN
960 printk(KERN_INFO "block_til_ready after blocking: ttyR%d, count = %d\n",
961 info->line, info->count);
965 info->flags |= ROCKET_NORMAL_ACTIVE;
970 * Exception handler that opens a serial port. Creates xmit_buf storage, fills in
971 * port's r_port struct. Initializes the port hardware.
973 static int rp_open(struct tty_struct *tty, struct file *filp)
976 int line = 0, retval;
980 line = TTY_GET_LINE(tty);
981 if ((line < 0) || (line >= MAX_RP_PORTS) || ((info = rp_table[line]) == NULL))
984 page = __get_free_page(GFP_KERNEL);
988 if (info->flags & ROCKET_CLOSING) {
989 interruptible_sleep_on(&info->close_wait);
991 return ((info->flags & ROCKET_HUP_NOTIFY) ? -EAGAIN : -ERESTARTSYS);
995 * We must not sleep from here until the port is marked fully in use.
1000 info->xmit_buf = (unsigned char *) page;
1002 tty->driver_data = info;
1005 if (info->count++ == 0) {
1006 atomic_inc(&rp_num_ports_open);
1008 #ifdef ROCKET_DEBUG_OPEN
1009 printk(KERN_INFO "rocket mod++ = %d...", atomic_read(&rp_num_ports_open));
1012 #ifdef ROCKET_DEBUG_OPEN
1013 printk(KERN_INFO "rp_open ttyR%d, count=%d\n", info->line, info->count);
1017 * Info->count is now 1; so it's safe to sleep now.
1019 info->session = process_session(current);
1020 info->pgrp = process_group(current);
1022 if ((info->flags & ROCKET_INITIALIZED) == 0) {
1023 cp = &info->channel;
1024 sSetRxTrigger(cp, TRIG_1);
1025 if (sGetChanStatus(cp) & CD_ACT)
1026 info->cd_status = 1;
1028 info->cd_status = 0;
1029 sDisRxStatusMode(cp);
1033 sEnInterrupts(cp, (TXINT_EN | MCINT_EN | RXINT_EN | SRCINT_EN | CHANINT_EN));
1034 sSetRxTrigger(cp, TRIG_1);
1037 sDisRxStatusMode(cp);
1041 sDisTxSoftFlowCtl(cp);
1046 info->flags |= ROCKET_INITIALIZED;
1049 * Set up the tty->alt_speed kludge
1051 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_HI)
1052 info->tty->alt_speed = 57600;
1053 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_VHI)
1054 info->tty->alt_speed = 115200;
1055 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_SHI)
1056 info->tty->alt_speed = 230400;
1057 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_WARP)
1058 info->tty->alt_speed = 460800;
1060 configure_r_port(info, NULL);
1061 if (tty->termios->c_cflag & CBAUD) {
1066 /* Starts (or resets) the maint polling loop */
1067 mod_timer(&rocket_timer, jiffies + POLL_PERIOD);
1069 retval = block_til_ready(tty, filp, info);
1071 #ifdef ROCKET_DEBUG_OPEN
1072 printk(KERN_INFO "rp_open returning after block_til_ready with %d\n", retval);
1080 * Exception handler that closes a serial port. info->count is considered critical.
1082 static void rp_close(struct tty_struct *tty, struct file *filp)
1084 struct r_port *info = (struct r_port *) tty->driver_data;
1085 unsigned long flags;
1089 if (rocket_paranoia_check(info, "rp_close"))
1092 #ifdef ROCKET_DEBUG_OPEN
1093 printk(KERN_INFO "rp_close ttyR%d, count = %d\n", info->line, info->count);
1096 if (tty_hung_up_p(filp))
1098 spin_lock_irqsave(&info->slock, flags);
1100 if ((tty->count == 1) && (info->count != 1)) {
1102 * Uh, oh. tty->count is 1, which means that the tty
1103 * structure will be freed. Info->count should always
1104 * be one in these conditions. If it's greater than
1105 * one, we've got real problems, since it means the
1106 * serial port won't be shutdown.
1108 printk(KERN_INFO "rp_close: bad serial port count; tty->count is 1, "
1109 "info->count is %d\n", info->count);
1112 if (--info->count < 0) {
1113 printk(KERN_INFO "rp_close: bad serial port count for ttyR%d: %d\n",
1114 info->line, info->count);
1118 spin_unlock_irqrestore(&info->slock, flags);
1121 info->flags |= ROCKET_CLOSING;
1122 spin_unlock_irqrestore(&info->slock, flags);
1124 cp = &info->channel;
1127 * Notify the line discpline to only process XON/XOFF characters
1132 * If transmission was throttled by the application request,
1133 * just flush the xmit buffer.
1135 if (tty->flow_stopped)
1136 rp_flush_buffer(tty);
1139 * Wait for the transmit buffer to clear
1141 if (info->closing_wait != ROCKET_CLOSING_WAIT_NONE)
1142 tty_wait_until_sent(tty, info->closing_wait);
1144 * Before we drop DTR, make sure the UART transmitter
1145 * has completely drained; this is especially
1146 * important if there is a transmit FIFO!
1148 timeout = (sGetTxCnt(cp) + 1) * HZ / info->cps;
1151 rp_wait_until_sent(tty, timeout);
1152 clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
1155 sDisInterrupts(cp, (TXINT_EN | MCINT_EN | RXINT_EN | SRCINT_EN | CHANINT_EN));
1157 sDisTxSoftFlowCtl(cp);
1165 if (TTY_DRIVER_FLUSH_BUFFER_EXISTS(tty))
1166 TTY_DRIVER_FLUSH_BUFFER(tty);
1168 tty_ldisc_flush(tty);
1170 clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
1172 if (info->blocked_open) {
1173 if (info->close_delay) {
1174 msleep_interruptible(jiffies_to_msecs(info->close_delay));
1176 wake_up_interruptible(&info->open_wait);
1178 if (info->xmit_buf) {
1179 free_page((unsigned long) info->xmit_buf);
1180 info->xmit_buf = NULL;
1183 info->flags &= ~(ROCKET_INITIALIZED | ROCKET_CLOSING | ROCKET_NORMAL_ACTIVE);
1185 wake_up_interruptible(&info->close_wait);
1186 atomic_dec(&rp_num_ports_open);
1188 #ifdef ROCKET_DEBUG_OPEN
1189 printk(KERN_INFO "rocket mod-- = %d...", atomic_read(&rp_num_ports_open));
1190 printk(KERN_INFO "rp_close ttyR%d complete shutdown\n", info->line);
1195 static void rp_set_termios(struct tty_struct *tty,
1196 struct ktermios *old_termios)
1198 struct r_port *info = (struct r_port *) tty->driver_data;
1202 if (rocket_paranoia_check(info, "rp_set_termios"))
1205 cflag = tty->termios->c_cflag;
1207 if (cflag == old_termios->c_cflag)
1211 * This driver doesn't support CS5 or CS6
1213 if (((cflag & CSIZE) == CS5) || ((cflag & CSIZE) == CS6))
1214 tty->termios->c_cflag =
1215 ((cflag & ~CSIZE) | (old_termios->c_cflag & CSIZE));
1217 configure_r_port(info, old_termios);
1219 cp = &info->channel;
1221 /* Handle transition to B0 status */
1222 if ((old_termios->c_cflag & CBAUD) && !(tty->termios->c_cflag & CBAUD)) {
1227 /* Handle transition away from B0 status */
1228 if (!(old_termios->c_cflag & CBAUD) && (tty->termios->c_cflag & CBAUD)) {
1229 if (!tty->hw_stopped || !(tty->termios->c_cflag & CRTSCTS))
1234 if ((old_termios->c_cflag & CRTSCTS) && !(tty->termios->c_cflag & CRTSCTS)) {
1235 tty->hw_stopped = 0;
1240 static void rp_break(struct tty_struct *tty, int break_state)
1242 struct r_port *info = (struct r_port *) tty->driver_data;
1243 unsigned long flags;
1245 if (rocket_paranoia_check(info, "rp_break"))
1248 spin_lock_irqsave(&info->slock, flags);
1249 if (break_state == -1)
1250 sSendBreak(&info->channel);
1252 sClrBreak(&info->channel);
1253 spin_unlock_irqrestore(&info->slock, flags);
1257 * sGetChanRI used to be a macro in rocket_int.h. When the functionality for
1258 * the UPCI boards was added, it was decided to make this a function because
1259 * the macro was getting too complicated. All cases except the first one
1260 * (UPCIRingInd) are taken directly from the original macro.
1262 static int sGetChanRI(CHANNEL_T * ChP)
1264 CONTROLLER_t *CtlP = ChP->CtlP;
1265 int ChanNum = ChP->ChanNum;
1268 if (CtlP->UPCIRingInd)
1269 RingInd = !(sInB(CtlP->UPCIRingInd) & sBitMapSetTbl[ChanNum]);
1270 else if (CtlP->AltChanRingIndicator)
1271 RingInd = sInB((ByteIO_t) (ChP->ChanStat + 8)) & DSR_ACT;
1272 else if (CtlP->boardType == ROCKET_TYPE_PC104)
1273 RingInd = !(sInB(CtlP->AiopIO[3]) & sBitMapSetTbl[ChanNum]);
1278 /********************************************************************************************/
1279 /* Here are the routines used by rp_ioctl. These are all called from exception handlers. */
1282 * Returns the state of the serial modem control lines. These next 2 functions
1283 * are the way kernel versions > 2.5 handle modem control lines rather than IOCTLs.
1285 static int rp_tiocmget(struct tty_struct *tty, struct file *file)
1287 struct r_port *info = (struct r_port *)tty->driver_data;
1288 unsigned int control, result, ChanStatus;
1290 ChanStatus = sGetChanStatusLo(&info->channel);
1291 control = info->channel.TxControl[3];
1292 result = ((control & SET_RTS) ? TIOCM_RTS : 0) |
1293 ((control & SET_DTR) ? TIOCM_DTR : 0) |
1294 ((ChanStatus & CD_ACT) ? TIOCM_CAR : 0) |
1295 (sGetChanRI(&info->channel) ? TIOCM_RNG : 0) |
1296 ((ChanStatus & DSR_ACT) ? TIOCM_DSR : 0) |
1297 ((ChanStatus & CTS_ACT) ? TIOCM_CTS : 0);
1303 * Sets the modem control lines
1305 static int rp_tiocmset(struct tty_struct *tty, struct file *file,
1306 unsigned int set, unsigned int clear)
1308 struct r_port *info = (struct r_port *)tty->driver_data;
1310 if (set & TIOCM_RTS)
1311 info->channel.TxControl[3] |= SET_RTS;
1312 if (set & TIOCM_DTR)
1313 info->channel.TxControl[3] |= SET_DTR;
1314 if (clear & TIOCM_RTS)
1315 info->channel.TxControl[3] &= ~SET_RTS;
1316 if (clear & TIOCM_DTR)
1317 info->channel.TxControl[3] &= ~SET_DTR;
1319 sOutDW(info->channel.IndexAddr, *(DWord_t *) & (info->channel.TxControl[0]));
1323 static int get_config(struct r_port *info, struct rocket_config __user *retinfo)
1325 struct rocket_config tmp;
1329 memset(&tmp, 0, sizeof (tmp));
1330 tmp.line = info->line;
1331 tmp.flags = info->flags;
1332 tmp.close_delay = info->close_delay;
1333 tmp.closing_wait = info->closing_wait;
1334 tmp.port = rcktpt_io_addr[(info->line >> 5) & 3];
1336 if (copy_to_user(retinfo, &tmp, sizeof (*retinfo)))
1341 static int set_config(struct r_port *info, struct rocket_config __user *new_info)
1343 struct rocket_config new_serial;
1345 if (copy_from_user(&new_serial, new_info, sizeof (new_serial)))
1348 if (!capable(CAP_SYS_ADMIN))
1350 if ((new_serial.flags & ~ROCKET_USR_MASK) != (info->flags & ~ROCKET_USR_MASK))
1352 info->flags = ((info->flags & ~ROCKET_USR_MASK) | (new_serial.flags & ROCKET_USR_MASK));
1353 configure_r_port(info, NULL);
1357 info->flags = ((info->flags & ~ROCKET_FLAGS) | (new_serial.flags & ROCKET_FLAGS));
1358 info->close_delay = new_serial.close_delay;
1359 info->closing_wait = new_serial.closing_wait;
1361 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_HI)
1362 info->tty->alt_speed = 57600;
1363 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_VHI)
1364 info->tty->alt_speed = 115200;
1365 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_SHI)
1366 info->tty->alt_speed = 230400;
1367 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_WARP)
1368 info->tty->alt_speed = 460800;
1370 configure_r_port(info, NULL);
1375 * This function fills in a rocket_ports struct with information
1376 * about what boards/ports are in the system. This info is passed
1377 * to user space. See setrocket.c where the info is used to create
1378 * the /dev/ttyRx ports.
1380 static int get_ports(struct r_port *info, struct rocket_ports __user *retports)
1382 struct rocket_ports tmp;
1387 memset(&tmp, 0, sizeof (tmp));
1388 tmp.tty_major = rocket_driver->major;
1390 for (board = 0; board < 4; board++) {
1391 tmp.rocketModel[board].model = rocketModel[board].model;
1392 strcpy(tmp.rocketModel[board].modelString, rocketModel[board].modelString);
1393 tmp.rocketModel[board].numPorts = rocketModel[board].numPorts;
1394 tmp.rocketModel[board].loadrm2 = rocketModel[board].loadrm2;
1395 tmp.rocketModel[board].startingPortNumber = rocketModel[board].startingPortNumber;
1397 if (copy_to_user(retports, &tmp, sizeof (*retports)))
1402 static int reset_rm2(struct r_port *info, void __user *arg)
1406 if (copy_from_user(&reset, arg, sizeof (int)))
1411 if (rcktpt_type[info->board] != ROCKET_TYPE_MODEMII &&
1412 rcktpt_type[info->board] != ROCKET_TYPE_MODEMIII)
1415 if (info->ctlp->BusType == isISA)
1416 sModemReset(info->ctlp, info->chan, reset);
1418 sPCIModemReset(info->ctlp, info->chan, reset);
1423 static int get_version(struct r_port *info, struct rocket_version __user *retvers)
1425 if (copy_to_user(retvers, &driver_version, sizeof (*retvers)))
1430 /* IOCTL call handler into the driver */
1431 static int rp_ioctl(struct tty_struct *tty, struct file *file,
1432 unsigned int cmd, unsigned long arg)
1434 struct r_port *info = (struct r_port *) tty->driver_data;
1435 void __user *argp = (void __user *)arg;
1437 if (cmd != RCKP_GET_PORTS && rocket_paranoia_check(info, "rp_ioctl"))
1441 case RCKP_GET_STRUCT:
1442 if (copy_to_user(argp, info, sizeof (struct r_port)))
1445 case RCKP_GET_CONFIG:
1446 return get_config(info, argp);
1447 case RCKP_SET_CONFIG:
1448 return set_config(info, argp);
1449 case RCKP_GET_PORTS:
1450 return get_ports(info, argp);
1451 case RCKP_RESET_RM2:
1452 return reset_rm2(info, argp);
1453 case RCKP_GET_VERSION:
1454 return get_version(info, argp);
1456 return -ENOIOCTLCMD;
1461 static void rp_send_xchar(struct tty_struct *tty, char ch)
1463 struct r_port *info = (struct r_port *) tty->driver_data;
1466 if (rocket_paranoia_check(info, "rp_send_xchar"))
1469 cp = &info->channel;
1471 sWriteTxPrioByte(cp, ch);
1473 sWriteTxByte(sGetTxRxDataIO(cp), ch);
1476 static void rp_throttle(struct tty_struct *tty)
1478 struct r_port *info = (struct r_port *) tty->driver_data;
1481 #ifdef ROCKET_DEBUG_THROTTLE
1482 printk(KERN_INFO "throttle %s: %d....\n", tty->name,
1483 tty->ldisc.chars_in_buffer(tty));
1486 if (rocket_paranoia_check(info, "rp_throttle"))
1489 cp = &info->channel;
1491 rp_send_xchar(tty, STOP_CHAR(tty));
1493 sClrRTS(&info->channel);
1496 static void rp_unthrottle(struct tty_struct *tty)
1498 struct r_port *info = (struct r_port *) tty->driver_data;
1500 #ifdef ROCKET_DEBUG_THROTTLE
1501 printk(KERN_INFO "unthrottle %s: %d....\n", tty->name,
1502 tty->ldisc.chars_in_buffer(tty));
1505 if (rocket_paranoia_check(info, "rp_throttle"))
1508 cp = &info->channel;
1510 rp_send_xchar(tty, START_CHAR(tty));
1512 sSetRTS(&info->channel);
1516 * ------------------------------------------------------------
1517 * rp_stop() and rp_start()
1519 * This routines are called before setting or resetting tty->stopped.
1520 * They enable or disable transmitter interrupts, as necessary.
1521 * ------------------------------------------------------------
1523 static void rp_stop(struct tty_struct *tty)
1525 struct r_port *info = (struct r_port *) tty->driver_data;
1527 #ifdef ROCKET_DEBUG_FLOW
1528 printk(KERN_INFO "stop %s: %d %d....\n", tty->name,
1529 info->xmit_cnt, info->xmit_fifo_room);
1532 if (rocket_paranoia_check(info, "rp_stop"))
1535 if (sGetTxCnt(&info->channel))
1536 sDisTransmit(&info->channel);
1539 static void rp_start(struct tty_struct *tty)
1541 struct r_port *info = (struct r_port *) tty->driver_data;
1543 #ifdef ROCKET_DEBUG_FLOW
1544 printk(KERN_INFO "start %s: %d %d....\n", tty->name,
1545 info->xmit_cnt, info->xmit_fifo_room);
1548 if (rocket_paranoia_check(info, "rp_stop"))
1551 sEnTransmit(&info->channel);
1552 set_bit((info->aiop * 8) + info->chan,
1553 (void *) &xmit_flags[info->board]);
1557 * rp_wait_until_sent() --- wait until the transmitter is empty
1559 static void rp_wait_until_sent(struct tty_struct *tty, int timeout)
1561 struct r_port *info = (struct r_port *) tty->driver_data;
1563 unsigned long orig_jiffies;
1564 int check_time, exit_time;
1567 if (rocket_paranoia_check(info, "rp_wait_until_sent"))
1570 cp = &info->channel;
1572 orig_jiffies = jiffies;
1573 #ifdef ROCKET_DEBUG_WAIT_UNTIL_SENT
1574 printk(KERN_INFO "In RP_wait_until_sent(%d) (jiff=%lu)...", timeout,
1576 printk(KERN_INFO "cps=%d...", info->cps);
1579 txcnt = sGetTxCnt(cp);
1581 if (sGetChanStatusLo(cp) & TXSHRMT)
1583 check_time = (HZ / info->cps) / 5;
1585 check_time = HZ * txcnt / info->cps;
1588 exit_time = orig_jiffies + timeout - jiffies;
1591 if (exit_time < check_time)
1592 check_time = exit_time;
1594 if (check_time == 0)
1596 #ifdef ROCKET_DEBUG_WAIT_UNTIL_SENT
1597 printk(KERN_INFO "txcnt = %d (jiff=%lu,check=%d)...", txcnt, jiffies, check_time);
1599 msleep_interruptible(jiffies_to_msecs(check_time));
1600 if (signal_pending(current))
1603 current->state = TASK_RUNNING;
1604 #ifdef ROCKET_DEBUG_WAIT_UNTIL_SENT
1605 printk(KERN_INFO "txcnt = %d (jiff=%lu)...done\n", txcnt, jiffies);
1610 * rp_hangup() --- called by tty_hangup() when a hangup is signaled.
1612 static void rp_hangup(struct tty_struct *tty)
1615 struct r_port *info = (struct r_port *) tty->driver_data;
1617 if (rocket_paranoia_check(info, "rp_hangup"))
1620 #if (defined(ROCKET_DEBUG_OPEN) || defined(ROCKET_DEBUG_HANGUP))
1621 printk(KERN_INFO "rp_hangup of ttyR%d...", info->line);
1623 rp_flush_buffer(tty);
1624 if (info->flags & ROCKET_CLOSING)
1627 atomic_dec(&rp_num_ports_open);
1628 clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
1631 info->flags &= ~ROCKET_NORMAL_ACTIVE;
1634 cp = &info->channel;
1637 sDisInterrupts(cp, (TXINT_EN | MCINT_EN | RXINT_EN | SRCINT_EN | CHANINT_EN));
1639 sDisTxSoftFlowCtl(cp);
1641 info->flags &= ~ROCKET_INITIALIZED;
1643 wake_up_interruptible(&info->open_wait);
1647 * Exception handler - write char routine. The RocketPort driver uses a
1648 * double-buffering strategy, with the twist that if the in-memory CPU
1649 * buffer is empty, and there's space in the transmit FIFO, the
1650 * writing routines will write directly to transmit FIFO.
1651 * Write buffer and counters protected by spinlocks
1653 static void rp_put_char(struct tty_struct *tty, unsigned char ch)
1655 struct r_port *info = (struct r_port *) tty->driver_data;
1657 unsigned long flags;
1659 if (rocket_paranoia_check(info, "rp_put_char"))
1662 /* Grab the port write semaphore, locking out other processes that try to write to this port */
1663 down(&info->write_sem);
1665 #ifdef ROCKET_DEBUG_WRITE
1666 printk(KERN_INFO "rp_put_char %c...", ch);
1669 spin_lock_irqsave(&info->slock, flags);
1670 cp = &info->channel;
1672 if (!tty->stopped && !tty->hw_stopped && info->xmit_fifo_room == 0)
1673 info->xmit_fifo_room = TXFIFO_SIZE - sGetTxCnt(cp);
1675 if (tty->stopped || tty->hw_stopped || info->xmit_fifo_room == 0 || info->xmit_cnt != 0) {
1676 info->xmit_buf[info->xmit_head++] = ch;
1677 info->xmit_head &= XMIT_BUF_SIZE - 1;
1679 set_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
1681 sOutB(sGetTxRxDataIO(cp), ch);
1682 info->xmit_fifo_room--;
1684 spin_unlock_irqrestore(&info->slock, flags);
1685 up(&info->write_sem);
1689 * Exception handler - write routine, called when user app writes to the device.
1690 * A per port write semaphore is used to protect from another process writing to
1691 * this port at the same time. This other process could be running on the other CPU
1692 * or get control of the CPU if the copy_from_user() blocks due to a page fault (swapped out).
1693 * Spinlocks protect the info xmit members.
1695 static int rp_write(struct tty_struct *tty,
1696 const unsigned char *buf, int count)
1698 struct r_port *info = (struct r_port *) tty->driver_data;
1700 const unsigned char *b;
1702 unsigned long flags;
1704 if (count <= 0 || rocket_paranoia_check(info, "rp_write"))
1707 down_interruptible(&info->write_sem);
1709 #ifdef ROCKET_DEBUG_WRITE
1710 printk(KERN_INFO "rp_write %d chars...", count);
1712 cp = &info->channel;
1714 if (!tty->stopped && !tty->hw_stopped && info->xmit_fifo_room < count)
1715 info->xmit_fifo_room = TXFIFO_SIZE - sGetTxCnt(cp);
1718 * If the write queue for the port is empty, and there is FIFO space, stuff bytes
1719 * into FIFO. Use the write queue for temp storage.
1721 if (!tty->stopped && !tty->hw_stopped && info->xmit_cnt == 0 && info->xmit_fifo_room > 0) {
1722 c = min(count, info->xmit_fifo_room);
1725 /* Push data into FIFO, 2 bytes at a time */
1726 sOutStrW(sGetTxRxDataIO(cp), (unsigned short *) b, c / 2);
1728 /* If there is a byte remaining, write it */
1730 sOutB(sGetTxRxDataIO(cp), b[c - 1]);
1736 spin_lock_irqsave(&info->slock, flags);
1737 info->xmit_fifo_room -= c;
1738 spin_unlock_irqrestore(&info->slock, flags);
1741 /* If count is zero, we wrote it all and are done */
1745 /* Write remaining data into the port's xmit_buf */
1747 if (info->tty == 0) /* Seemingly obligatory check... */
1750 c = min(count, min(XMIT_BUF_SIZE - info->xmit_cnt - 1, XMIT_BUF_SIZE - info->xmit_head));
1755 memcpy(info->xmit_buf + info->xmit_head, b, c);
1757 spin_lock_irqsave(&info->slock, flags);
1759 (info->xmit_head + c) & (XMIT_BUF_SIZE - 1);
1760 info->xmit_cnt += c;
1761 spin_unlock_irqrestore(&info->slock, flags);
1768 if ((retval > 0) && !tty->stopped && !tty->hw_stopped)
1769 set_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
1772 if (info->xmit_cnt < WAKEUP_CHARS) {
1774 #ifdef ROCKETPORT_HAVE_POLL_WAIT
1775 wake_up_interruptible(&tty->poll_wait);
1778 up(&info->write_sem);
1783 * Return the number of characters that can be sent. We estimate
1784 * only using the in-memory transmit buffer only, and ignore the
1785 * potential space in the transmit FIFO.
1787 static int rp_write_room(struct tty_struct *tty)
1789 struct r_port *info = (struct r_port *) tty->driver_data;
1792 if (rocket_paranoia_check(info, "rp_write_room"))
1795 ret = XMIT_BUF_SIZE - info->xmit_cnt - 1;
1798 #ifdef ROCKET_DEBUG_WRITE
1799 printk(KERN_INFO "rp_write_room returns %d...", ret);
1805 * Return the number of characters in the buffer. Again, this only
1806 * counts those characters in the in-memory transmit buffer.
1808 static int rp_chars_in_buffer(struct tty_struct *tty)
1810 struct r_port *info = (struct r_port *) tty->driver_data;
1813 if (rocket_paranoia_check(info, "rp_chars_in_buffer"))
1816 cp = &info->channel;
1818 #ifdef ROCKET_DEBUG_WRITE
1819 printk(KERN_INFO "rp_chars_in_buffer returns %d...", info->xmit_cnt);
1821 return info->xmit_cnt;
1825 * Flushes the TX fifo for a port, deletes data in the xmit_buf stored in the
1826 * r_port struct for the port. Note that spinlock are used to protect info members,
1827 * do not call this function if the spinlock is already held.
1829 static void rp_flush_buffer(struct tty_struct *tty)
1831 struct r_port *info = (struct r_port *) tty->driver_data;
1833 unsigned long flags;
1835 if (rocket_paranoia_check(info, "rp_flush_buffer"))
1838 spin_lock_irqsave(&info->slock, flags);
1839 info->xmit_cnt = info->xmit_head = info->xmit_tail = 0;
1840 spin_unlock_irqrestore(&info->slock, flags);
1842 #ifdef ROCKETPORT_HAVE_POLL_WAIT
1843 wake_up_interruptible(&tty->poll_wait);
1847 cp = &info->channel;
1854 * Called when a PCI card is found. Retrieves and stores model information,
1855 * init's aiopic and serial port hardware.
1856 * Inputs: i is the board number (0-n)
1858 static __init int register_PCI(int i, struct pci_dev *dev)
1860 int num_aiops, aiop, max_num_aiops, num_chan, chan;
1861 unsigned int aiopio[MAX_AIOPS_PER_BOARD];
1862 char *str, *board_type;
1866 int altChanRingIndicator = 0;
1867 int ports_per_aiop = 8;
1869 unsigned int class_rev;
1870 WordIO_t ConfigIO = 0;
1871 ByteIO_t UPCIRingInd = 0;
1873 if (!dev || pci_enable_device(dev))
1876 rcktpt_io_addr[i] = pci_resource_start(dev, 0);
1877 ret = pci_read_config_dword(dev, PCI_CLASS_REVISION, &class_rev);
1880 printk(KERN_INFO " Error during register_PCI(), unable to read config dword \n");
1884 rcktpt_type[i] = ROCKET_TYPE_NORMAL;
1885 rocketModel[i].loadrm2 = 0;
1886 rocketModel[i].startingPortNumber = nextLineNumber;
1888 /* Depending on the model, set up some config variables */
1889 switch (dev->device) {
1890 case PCI_DEVICE_ID_RP4QUAD:
1894 rocketModel[i].model = MODEL_RP4QUAD;
1895 strcpy(rocketModel[i].modelString, "RocketPort 4 port w/quad cable");
1896 rocketModel[i].numPorts = 4;
1898 case PCI_DEVICE_ID_RP8OCTA:
1901 rocketModel[i].model = MODEL_RP8OCTA;
1902 strcpy(rocketModel[i].modelString, "RocketPort 8 port w/octa cable");
1903 rocketModel[i].numPorts = 8;
1905 case PCI_DEVICE_ID_URP8OCTA:
1908 rocketModel[i].model = MODEL_UPCI_RP8OCTA;
1909 strcpy(rocketModel[i].modelString, "RocketPort UPCI 8 port w/octa cable");
1910 rocketModel[i].numPorts = 8;
1912 case PCI_DEVICE_ID_RP8INTF:
1915 rocketModel[i].model = MODEL_RP8INTF;
1916 strcpy(rocketModel[i].modelString, "RocketPort 8 port w/external I/F");
1917 rocketModel[i].numPorts = 8;
1919 case PCI_DEVICE_ID_URP8INTF:
1922 rocketModel[i].model = MODEL_UPCI_RP8INTF;
1923 strcpy(rocketModel[i].modelString, "RocketPort UPCI 8 port w/external I/F");
1924 rocketModel[i].numPorts = 8;
1926 case PCI_DEVICE_ID_RP8J:
1929 rocketModel[i].model = MODEL_RP8J;
1930 strcpy(rocketModel[i].modelString, "RocketPort 8 port w/RJ11 connectors");
1931 rocketModel[i].numPorts = 8;
1933 case PCI_DEVICE_ID_RP4J:
1937 rocketModel[i].model = MODEL_RP4J;
1938 strcpy(rocketModel[i].modelString, "RocketPort 4 port w/RJ45 connectors");
1939 rocketModel[i].numPorts = 4;
1941 case PCI_DEVICE_ID_RP8SNI:
1942 str = "8 (DB78 Custom)";
1944 rocketModel[i].model = MODEL_RP8SNI;
1945 strcpy(rocketModel[i].modelString, "RocketPort 8 port w/ custom DB78");
1946 rocketModel[i].numPorts = 8;
1948 case PCI_DEVICE_ID_RP16SNI:
1949 str = "16 (DB78 Custom)";
1951 rocketModel[i].model = MODEL_RP16SNI;
1952 strcpy(rocketModel[i].modelString, "RocketPort 16 port w/ custom DB78");
1953 rocketModel[i].numPorts = 16;
1955 case PCI_DEVICE_ID_RP16INTF:
1958 rocketModel[i].model = MODEL_RP16INTF;
1959 strcpy(rocketModel[i].modelString, "RocketPort 16 port w/external I/F");
1960 rocketModel[i].numPorts = 16;
1962 case PCI_DEVICE_ID_URP16INTF:
1965 rocketModel[i].model = MODEL_UPCI_RP16INTF;
1966 strcpy(rocketModel[i].modelString, "RocketPort UPCI 16 port w/external I/F");
1967 rocketModel[i].numPorts = 16;
1969 case PCI_DEVICE_ID_CRP16INTF:
1972 rocketModel[i].model = MODEL_CPCI_RP16INTF;
1973 strcpy(rocketModel[i].modelString, "RocketPort Compact PCI 16 port w/external I/F");
1974 rocketModel[i].numPorts = 16;
1976 case PCI_DEVICE_ID_RP32INTF:
1979 rocketModel[i].model = MODEL_RP32INTF;
1980 strcpy(rocketModel[i].modelString, "RocketPort 32 port w/external I/F");
1981 rocketModel[i].numPorts = 32;
1983 case PCI_DEVICE_ID_URP32INTF:
1986 rocketModel[i].model = MODEL_UPCI_RP32INTF;
1987 strcpy(rocketModel[i].modelString, "RocketPort UPCI 32 port w/external I/F");
1988 rocketModel[i].numPorts = 32;
1990 case PCI_DEVICE_ID_RPP4:
1991 str = "Plus Quadcable";
1994 altChanRingIndicator++;
1996 rocketModel[i].model = MODEL_RPP4;
1997 strcpy(rocketModel[i].modelString, "RocketPort Plus 4 port");
1998 rocketModel[i].numPorts = 4;
2000 case PCI_DEVICE_ID_RPP8:
2001 str = "Plus Octacable";
2004 altChanRingIndicator++;
2006 rocketModel[i].model = MODEL_RPP8;
2007 strcpy(rocketModel[i].modelString, "RocketPort Plus 8 port");
2008 rocketModel[i].numPorts = 8;
2010 case PCI_DEVICE_ID_RP2_232:
2011 str = "Plus 2 (RS-232)";
2014 altChanRingIndicator++;
2016 rocketModel[i].model = MODEL_RP2_232;
2017 strcpy(rocketModel[i].modelString, "RocketPort Plus 2 port RS232");
2018 rocketModel[i].numPorts = 2;
2020 case PCI_DEVICE_ID_RP2_422:
2021 str = "Plus 2 (RS-422)";
2024 altChanRingIndicator++;
2026 rocketModel[i].model = MODEL_RP2_422;
2027 strcpy(rocketModel[i].modelString, "RocketPort Plus 2 port RS422");
2028 rocketModel[i].numPorts = 2;
2030 case PCI_DEVICE_ID_RP6M:
2036 /* If class_rev is 1, the rocketmodem flash must be loaded. If it is 2 it is a "socketed" version. */
2037 if ((class_rev & 0xFF) == 1) {
2038 rcktpt_type[i] = ROCKET_TYPE_MODEMII;
2039 rocketModel[i].loadrm2 = 1;
2041 rcktpt_type[i] = ROCKET_TYPE_MODEM;
2044 rocketModel[i].model = MODEL_RP6M;
2045 strcpy(rocketModel[i].modelString, "RocketModem 6 port");
2046 rocketModel[i].numPorts = 6;
2048 case PCI_DEVICE_ID_RP4M:
2052 if ((class_rev & 0xFF) == 1) {
2053 rcktpt_type[i] = ROCKET_TYPE_MODEMII;
2054 rocketModel[i].loadrm2 = 1;
2056 rcktpt_type[i] = ROCKET_TYPE_MODEM;
2059 rocketModel[i].model = MODEL_RP4M;
2060 strcpy(rocketModel[i].modelString, "RocketModem 4 port");
2061 rocketModel[i].numPorts = 4;
2064 str = "(unknown/unsupported)";
2070 * Check for UPCI boards.
2073 switch (dev->device) {
2074 case PCI_DEVICE_ID_URP32INTF:
2075 case PCI_DEVICE_ID_URP8INTF:
2076 case PCI_DEVICE_ID_URP16INTF:
2077 case PCI_DEVICE_ID_CRP16INTF:
2078 case PCI_DEVICE_ID_URP8OCTA:
2079 rcktpt_io_addr[i] = pci_resource_start(dev, 2);
2080 ConfigIO = pci_resource_start(dev, 1);
2081 if (dev->device == PCI_DEVICE_ID_URP8OCTA) {
2082 UPCIRingInd = rcktpt_io_addr[i] + _PCI_9030_RING_IND;
2085 * Check for octa or quad cable.
2088 (sInW(ConfigIO + _PCI_9030_GPIO_CTRL) &
2089 PCI_GPIO_CTRL_8PORT)) {
2092 rocketModel[i].numPorts = 4;
2096 case PCI_DEVICE_ID_UPCI_RM3_8PORT:
2099 rocketModel[i].model = MODEL_UPCI_RM3_8PORT;
2100 strcpy(rocketModel[i].modelString, "RocketModem III 8 port");
2101 rocketModel[i].numPorts = 8;
2102 rcktpt_io_addr[i] = pci_resource_start(dev, 2);
2103 UPCIRingInd = rcktpt_io_addr[i] + _PCI_9030_RING_IND;
2104 ConfigIO = pci_resource_start(dev, 1);
2105 rcktpt_type[i] = ROCKET_TYPE_MODEMIII;
2107 case PCI_DEVICE_ID_UPCI_RM3_4PORT:
2110 rocketModel[i].model = MODEL_UPCI_RM3_4PORT;
2111 strcpy(rocketModel[i].modelString, "RocketModem III 4 port");
2112 rocketModel[i].numPorts = 4;
2113 rcktpt_io_addr[i] = pci_resource_start(dev, 2);
2114 UPCIRingInd = rcktpt_io_addr[i] + _PCI_9030_RING_IND;
2115 ConfigIO = pci_resource_start(dev, 1);
2116 rcktpt_type[i] = ROCKET_TYPE_MODEMIII;
2122 switch (rcktpt_type[i]) {
2123 case ROCKET_TYPE_MODEM:
2124 board_type = "RocketModem";
2126 case ROCKET_TYPE_MODEMII:
2127 board_type = "RocketModem II";
2129 case ROCKET_TYPE_MODEMIII:
2130 board_type = "RocketModem III";
2133 board_type = "RocketPort";
2138 sClockPrescale = 0x12; /* mod 2 (divide by 3) */
2139 rp_baud_base[i] = 921600;
2142 * If support_low_speed is set, use the slow clock
2143 * prescale, which supports 50 bps
2145 if (support_low_speed) {
2146 /* mod 9 (divide by 10) prescale */
2147 sClockPrescale = 0x19;
2148 rp_baud_base[i] = 230400;
2150 /* mod 4 (devide by 5) prescale */
2151 sClockPrescale = 0x14;
2152 rp_baud_base[i] = 460800;
2156 for (aiop = 0; aiop < max_num_aiops; aiop++)
2157 aiopio[aiop] = rcktpt_io_addr[i] + (aiop * 0x40);
2158 ctlp = sCtlNumToCtlPtr(i);
2159 num_aiops = sPCIInitController(ctlp, i, aiopio, max_num_aiops, ConfigIO, 0, FREQ_DIS, 0, altChanRingIndicator, UPCIRingInd);
2160 for (aiop = 0; aiop < max_num_aiops; aiop++)
2161 ctlp->AiopNumChan[aiop] = ports_per_aiop;
2163 printk("Comtrol PCI controller #%d ID 0x%x found in bus:slot:fn %s at address %04lx, "
2164 "%d AIOP(s) (%s)\n", i, dev->device, pci_name(dev),
2165 rcktpt_io_addr[i], num_aiops, rocketModel[i].modelString);
2166 printk(KERN_INFO "Installing %s, creating /dev/ttyR%d - %ld\n",
2167 rocketModel[i].modelString,
2168 rocketModel[i].startingPortNumber,
2169 rocketModel[i].startingPortNumber +
2170 rocketModel[i].numPorts - 1);
2172 if (num_aiops <= 0) {
2173 rcktpt_io_addr[i] = 0;
2178 /* Reset the AIOPIC, init the serial ports */
2179 for (aiop = 0; aiop < num_aiops; aiop++) {
2180 sResetAiopByNum(ctlp, aiop);
2181 num_chan = ports_per_aiop;
2182 for (chan = 0; chan < num_chan; chan++)
2183 init_r_port(i, aiop, chan, dev);
2186 /* Rocket modems must be reset */
2187 if ((rcktpt_type[i] == ROCKET_TYPE_MODEM) ||
2188 (rcktpt_type[i] == ROCKET_TYPE_MODEMII) ||
2189 (rcktpt_type[i] == ROCKET_TYPE_MODEMIII)) {
2190 num_chan = ports_per_aiop;
2191 for (chan = 0; chan < num_chan; chan++)
2192 sPCIModemReset(ctlp, chan, 1);
2194 for (chan = 0; chan < num_chan; chan++)
2195 sPCIModemReset(ctlp, chan, 0);
2197 rmSpeakerReset(ctlp, rocketModel[i].model);
2203 * Probes for PCI cards, inits them if found
2204 * Input: board_found = number of ISA boards already found, or the
2205 * starting board number
2206 * Returns: Number of PCI boards found
2208 static int __init init_PCI(int boards_found)
2210 struct pci_dev *dev = NULL;
2213 /* Work through the PCI device list, pulling out ours */
2214 while ((dev = pci_get_device(PCI_VENDOR_ID_RP, PCI_ANY_ID, dev))) {
2215 if (register_PCI(count + boards_found, dev))
2221 #endif /* CONFIG_PCI */
2224 * Probes for ISA cards
2225 * Input: i = the board number to look for
2226 * Returns: 1 if board found, 0 else
2228 static int __init init_ISA(int i)
2230 int num_aiops, num_chan = 0, total_num_chan = 0;
2232 unsigned int aiopio[MAX_AIOPS_PER_BOARD];
2236 /* If io_addr is zero, no board configured */
2237 if (rcktpt_io_addr[i] == 0)
2240 /* Reserve the IO region */
2241 if (!request_region(rcktpt_io_addr[i], 64, "Comtrol RocketPort")) {
2242 printk(KERN_INFO "Unable to reserve IO region for configured ISA RocketPort at address 0x%lx, board not installed...\n", rcktpt_io_addr[i]);
2243 rcktpt_io_addr[i] = 0;
2247 ctlp = sCtlNumToCtlPtr(i);
2249 ctlp->boardType = rcktpt_type[i];
2251 switch (rcktpt_type[i]) {
2252 case ROCKET_TYPE_PC104:
2253 type_string = "(PC104)";
2255 case ROCKET_TYPE_MODEM:
2256 type_string = "(RocketModem)";
2258 case ROCKET_TYPE_MODEMII:
2259 type_string = "(RocketModem II)";
2267 * If support_low_speed is set, use the slow clock prescale,
2268 * which supports 50 bps
2270 if (support_low_speed) {
2271 sClockPrescale = 0x19; /* mod 9 (divide by 10) prescale */
2272 rp_baud_base[i] = 230400;
2274 sClockPrescale = 0x14; /* mod 4 (devide by 5) prescale */
2275 rp_baud_base[i] = 460800;
2278 for (aiop = 0; aiop < MAX_AIOPS_PER_BOARD; aiop++)
2279 aiopio[aiop] = rcktpt_io_addr[i] + (aiop * 0x400);
2281 num_aiops = sInitController(ctlp, i, controller + (i * 0x400), aiopio, MAX_AIOPS_PER_BOARD, 0, FREQ_DIS, 0);
2283 if (ctlp->boardType == ROCKET_TYPE_PC104) {
2284 sEnAiop(ctlp, 2); /* only one AIOPIC, but these */
2285 sEnAiop(ctlp, 3); /* CSels used for other stuff */
2288 /* If something went wrong initing the AIOP's release the ISA IO memory */
2289 if (num_aiops <= 0) {
2290 release_region(rcktpt_io_addr[i], 64);
2291 rcktpt_io_addr[i] = 0;
2295 rocketModel[i].startingPortNumber = nextLineNumber;
2297 for (aiop = 0; aiop < num_aiops; aiop++) {
2298 sResetAiopByNum(ctlp, aiop);
2299 sEnAiop(ctlp, aiop);
2300 num_chan = sGetAiopNumChan(ctlp, aiop);
2301 total_num_chan += num_chan;
2302 for (chan = 0; chan < num_chan; chan++)
2303 init_r_port(i, aiop, chan, NULL);
2306 if ((rcktpt_type[i] == ROCKET_TYPE_MODEM) || (rcktpt_type[i] == ROCKET_TYPE_MODEMII)) {
2307 num_chan = sGetAiopNumChan(ctlp, 0);
2308 total_num_chan = num_chan;
2309 for (chan = 0; chan < num_chan; chan++)
2310 sModemReset(ctlp, chan, 1);
2312 for (chan = 0; chan < num_chan; chan++)
2313 sModemReset(ctlp, chan, 0);
2315 strcpy(rocketModel[i].modelString, "RocketModem ISA");
2317 strcpy(rocketModel[i].modelString, "RocketPort ISA");
2319 rocketModel[i].numPorts = total_num_chan;
2320 rocketModel[i].model = MODEL_ISA;
2322 printk(KERN_INFO "RocketPort ISA card #%d found at 0x%lx - %d AIOPs %s\n",
2323 i, rcktpt_io_addr[i], num_aiops, type_string);
2325 printk(KERN_INFO "Installing %s, creating /dev/ttyR%d - %ld\n",
2326 rocketModel[i].modelString,
2327 rocketModel[i].startingPortNumber,
2328 rocketModel[i].startingPortNumber +
2329 rocketModel[i].numPorts - 1);
2334 static const struct tty_operations rocket_ops = {
2338 .put_char = rp_put_char,
2339 .write_room = rp_write_room,
2340 .chars_in_buffer = rp_chars_in_buffer,
2341 .flush_buffer = rp_flush_buffer,
2343 .throttle = rp_throttle,
2344 .unthrottle = rp_unthrottle,
2345 .set_termios = rp_set_termios,
2348 .hangup = rp_hangup,
2349 .break_ctl = rp_break,
2350 .send_xchar = rp_send_xchar,
2351 .wait_until_sent = rp_wait_until_sent,
2352 .tiocmget = rp_tiocmget,
2353 .tiocmset = rp_tiocmset,
2357 * The module "startup" routine; it's run when the module is loaded.
2359 static int __init rp_init(void)
2361 int retval, pci_boards_found, isa_boards_found, i;
2363 printk(KERN_INFO "RocketPort device driver module, version %s, %s\n",
2364 ROCKET_VERSION, ROCKET_DATE);
2366 rocket_driver = alloc_tty_driver(MAX_RP_PORTS);
2371 * Set up the timer channel.
2373 init_timer(&rocket_timer);
2374 rocket_timer.function = rp_do_poll;
2377 * Initialize the array of pointers to our own internal state
2380 memset(rp_table, 0, sizeof (rp_table));
2381 memset(xmit_flags, 0, sizeof (xmit_flags));
2383 for (i = 0; i < MAX_RP_PORTS; i++)
2386 memset(rocketModel, 0, sizeof (rocketModel));
2389 * If board 1 is non-zero, there is at least one ISA configured. If controller is
2390 * zero, use the default controller IO address of board1 + 0x40.
2393 if (controller == 0)
2394 controller = board1 + 0x40;
2396 controller = 0; /* Used as a flag, meaning no ISA boards */
2399 /* If an ISA card is configured, reserve the 4 byte IO space for the Mudbac controller */
2400 if (controller && (!request_region(controller, 4, "Comtrol RocketPort"))) {
2401 printk(KERN_INFO "Unable to reserve IO region for first configured ISA RocketPort controller 0x%lx. Driver exiting \n", controller);
2405 /* Store ISA variable retrieved from command line or .conf file. */
2406 rcktpt_io_addr[0] = board1;
2407 rcktpt_io_addr[1] = board2;
2408 rcktpt_io_addr[2] = board3;
2409 rcktpt_io_addr[3] = board4;
2411 rcktpt_type[0] = modem1 ? ROCKET_TYPE_MODEM : ROCKET_TYPE_NORMAL;
2412 rcktpt_type[0] = pc104_1[0] ? ROCKET_TYPE_PC104 : rcktpt_type[0];
2413 rcktpt_type[1] = modem2 ? ROCKET_TYPE_MODEM : ROCKET_TYPE_NORMAL;
2414 rcktpt_type[1] = pc104_2[0] ? ROCKET_TYPE_PC104 : rcktpt_type[1];
2415 rcktpt_type[2] = modem3 ? ROCKET_TYPE_MODEM : ROCKET_TYPE_NORMAL;
2416 rcktpt_type[2] = pc104_3[0] ? ROCKET_TYPE_PC104 : rcktpt_type[2];
2417 rcktpt_type[3] = modem4 ? ROCKET_TYPE_MODEM : ROCKET_TYPE_NORMAL;
2418 rcktpt_type[3] = pc104_4[0] ? ROCKET_TYPE_PC104 : rcktpt_type[3];
2421 * Set up the tty driver structure and then register this
2422 * driver with the tty layer.
2425 rocket_driver->owner = THIS_MODULE;
2426 rocket_driver->flags = TTY_DRIVER_DYNAMIC_DEV;
2427 rocket_driver->name = "ttyR";
2428 rocket_driver->driver_name = "Comtrol RocketPort";
2429 rocket_driver->major = TTY_ROCKET_MAJOR;
2430 rocket_driver->minor_start = 0;
2431 rocket_driver->type = TTY_DRIVER_TYPE_SERIAL;
2432 rocket_driver->subtype = SERIAL_TYPE_NORMAL;
2433 rocket_driver->init_termios = tty_std_termios;
2434 rocket_driver->init_termios.c_cflag =
2435 B9600 | CS8 | CREAD | HUPCL | CLOCAL;
2436 rocket_driver->init_termios.c_ispeed = 9600;
2437 rocket_driver->init_termios.c_ospeed = 9600;
2438 #ifdef ROCKET_SOFT_FLOW
2439 rocket_driver->flags |= TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV;
2441 tty_set_operations(rocket_driver, &rocket_ops);
2443 retval = tty_register_driver(rocket_driver);
2445 printk(KERN_INFO "Couldn't install tty RocketPort driver (error %d)\n", -retval);
2446 put_tty_driver(rocket_driver);
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_INFO "No rocketport ports found; unloading driver.\n");
2475 del_timer_sync(&rocket_timer);
2476 tty_unregister_driver(rocket_driver);
2477 put_tty_driver(rocket_driver);
2485 static void rp_cleanup_module(void)
2490 del_timer_sync(&rocket_timer);
2492 retval = tty_unregister_driver(rocket_driver);
2494 printk(KERN_INFO "Error %d while trying to unregister "
2495 "rocketport driver\n", -retval);
2496 put_tty_driver(rocket_driver);
2498 for (i = 0; i < MAX_RP_PORTS; i++)
2501 for (i = 0; i < NUM_BOARDS; i++) {
2502 if (rcktpt_io_addr[i] <= 0 || is_PCI[i])
2504 release_region(rcktpt_io_addr[i], 64);
2507 release_region(controller, 4);
2510 /***************************************************************************
2511 Function: sInitController
2512 Purpose: Initialization of controller global registers and controller
2514 Call: sInitController(CtlP,CtlNum,MudbacIO,AiopIOList,AiopIOListSize,
2515 IRQNum,Frequency,PeriodicOnly)
2516 CONTROLLER_T *CtlP; Ptr to controller structure
2517 int CtlNum; Controller number
2518 ByteIO_t MudbacIO; Mudbac base I/O address.
2519 ByteIO_t *AiopIOList; List of I/O addresses for each AIOP.
2520 This list must be in the order the AIOPs will be found on the
2521 controller. Once an AIOP in the list is not found, it is
2522 assumed that there are no more AIOPs on the controller.
2523 int AiopIOListSize; Number of addresses in AiopIOList
2524 int IRQNum; Interrupt Request number. Can be any of the following:
2525 0: Disable global interrupts
2534 Byte_t Frequency: A flag identifying the frequency
2535 of the periodic interrupt, can be any one of the following:
2536 FREQ_DIS - periodic interrupt disabled
2537 FREQ_137HZ - 137 Hertz
2538 FREQ_69HZ - 69 Hertz
2539 FREQ_34HZ - 34 Hertz
2540 FREQ_17HZ - 17 Hertz
2543 If IRQNum is set to 0 the Frequency parameter is
2544 overidden, it is forced to a value of FREQ_DIS.
2545 int PeriodicOnly: 1 if all interrupts except the periodic
2546 interrupt are to be blocked.
2547 0 is both the periodic interrupt and
2548 other channel interrupts are allowed.
2549 If IRQNum is set to 0 the PeriodicOnly parameter is
2550 overidden, it is forced to a value of 0.
2551 Return: int: Number of AIOPs on the controller, or CTLID_NULL if controller
2552 initialization failed.
2555 If periodic interrupts are to be disabled but AIOP interrupts
2556 are allowed, set Frequency to FREQ_DIS and PeriodicOnly to 0.
2558 If interrupts are to be completely disabled set IRQNum to 0.
2560 Setting Frequency to FREQ_DIS and PeriodicOnly to 1 is an
2561 invalid combination.
2563 This function performs initialization of global interrupt modes,
2564 but it does not actually enable global interrupts. To enable
2565 and disable global interrupts use functions sEnGlobalInt() and
2566 sDisGlobalInt(). Enabling of global interrupts is normally not
2567 done until all other initializations are complete.
2569 Even if interrupts are globally enabled, they must also be
2570 individually enabled for each channel that is to generate
2573 Warnings: No range checking on any of the parameters is done.
2575 No context switches are allowed while executing this function.
2577 After this function all AIOPs on the controller are disabled,
2578 they can be enabled with sEnAiop().
2580 static int sInitController(CONTROLLER_T * CtlP, int CtlNum, ByteIO_t MudbacIO,
2581 ByteIO_t * AiopIOList, int AiopIOListSize,
2582 int IRQNum, Byte_t Frequency, int PeriodicOnly)
2588 CtlP->AiopIntrBits = aiop_intr_bits;
2589 CtlP->AltChanRingIndicator = 0;
2590 CtlP->CtlNum = CtlNum;
2591 CtlP->CtlID = CTLID_0001; /* controller release 1 */
2592 CtlP->BusType = isISA;
2593 CtlP->MBaseIO = MudbacIO;
2594 CtlP->MReg1IO = MudbacIO + 1;
2595 CtlP->MReg2IO = MudbacIO + 2;
2596 CtlP->MReg3IO = MudbacIO + 3;
2598 CtlP->MReg2 = 0; /* interrupt disable */
2599 CtlP->MReg3 = 0; /* no periodic interrupts */
2601 if (sIRQMap[IRQNum] == 0) { /* interrupts globally disabled */
2602 CtlP->MReg2 = 0; /* interrupt disable */
2603 CtlP->MReg3 = 0; /* no periodic interrupts */
2605 CtlP->MReg2 = sIRQMap[IRQNum]; /* set IRQ number */
2606 CtlP->MReg3 = Frequency; /* set frequency */
2607 if (PeriodicOnly) { /* periodic interrupt only */
2608 CtlP->MReg3 |= PERIODIC_ONLY;
2612 sOutB(CtlP->MReg2IO, CtlP->MReg2);
2613 sOutB(CtlP->MReg3IO, CtlP->MReg3);
2614 sControllerEOI(CtlP); /* clear EOI if warm init */
2617 for (i = done = 0; i < AiopIOListSize; i++) {
2619 CtlP->AiopIO[i] = (WordIO_t) io;
2620 CtlP->AiopIntChanIO[i] = io + _INT_CHAN;
2621 sOutB(CtlP->MReg2IO, CtlP->MReg2 | (i & 0x03)); /* AIOP index */
2622 sOutB(MudbacIO, (Byte_t) (io >> 6)); /* set up AIOP I/O in MUDBAC */
2625 sEnAiop(CtlP, i); /* enable the AIOP */
2626 CtlP->AiopID[i] = sReadAiopID(io); /* read AIOP ID */
2627 if (CtlP->AiopID[i] == AIOPID_NULL) /* if AIOP does not exist */
2628 done = 1; /* done looking for AIOPs */
2630 CtlP->AiopNumChan[i] = sReadAiopNumChan((WordIO_t) io); /* num channels in AIOP */
2631 sOutW((WordIO_t) io + _INDX_ADDR, _CLK_PRE); /* clock prescaler */
2632 sOutB(io + _INDX_DATA, sClockPrescale);
2633 CtlP->NumAiop++; /* bump count of AIOPs */
2635 sDisAiop(CtlP, i); /* disable AIOP */
2638 if (CtlP->NumAiop == 0)
2641 return (CtlP->NumAiop);
2644 /***************************************************************************
2645 Function: sPCIInitController
2646 Purpose: Initialization of controller global registers and controller
2648 Call: sPCIInitController(CtlP,CtlNum,AiopIOList,AiopIOListSize,
2649 IRQNum,Frequency,PeriodicOnly)
2650 CONTROLLER_T *CtlP; Ptr to controller structure
2651 int CtlNum; Controller number
2652 ByteIO_t *AiopIOList; List of I/O addresses for each AIOP.
2653 This list must be in the order the AIOPs will be found on the
2654 controller. Once an AIOP in the list is not found, it is
2655 assumed that there are no more AIOPs on the controller.
2656 int AiopIOListSize; Number of addresses in AiopIOList
2657 int IRQNum; Interrupt Request number. Can be any of the following:
2658 0: Disable global interrupts
2667 Byte_t Frequency: A flag identifying the frequency
2668 of the periodic interrupt, can be any one of the following:
2669 FREQ_DIS - periodic interrupt disabled
2670 FREQ_137HZ - 137 Hertz
2671 FREQ_69HZ - 69 Hertz
2672 FREQ_34HZ - 34 Hertz
2673 FREQ_17HZ - 17 Hertz
2676 If IRQNum is set to 0 the Frequency parameter is
2677 overidden, it is forced to a value of FREQ_DIS.
2678 int PeriodicOnly: 1 if all interrupts except the periodic
2679 interrupt are to be blocked.
2680 0 is both the periodic interrupt and
2681 other channel interrupts are allowed.
2682 If IRQNum is set to 0 the PeriodicOnly parameter is
2683 overidden, it is forced to a value of 0.
2684 Return: int: Number of AIOPs on the controller, or CTLID_NULL if controller
2685 initialization failed.
2688 If periodic interrupts are to be disabled but AIOP interrupts
2689 are allowed, set Frequency to FREQ_DIS and PeriodicOnly to 0.
2691 If interrupts are to be completely disabled set IRQNum to 0.
2693 Setting Frequency to FREQ_DIS and PeriodicOnly to 1 is an
2694 invalid combination.
2696 This function performs initialization of global interrupt modes,
2697 but it does not actually enable global interrupts. To enable
2698 and disable global interrupts use functions sEnGlobalInt() and
2699 sDisGlobalInt(). Enabling of global interrupts is normally not
2700 done until all other initializations are complete.
2702 Even if interrupts are globally enabled, they must also be
2703 individually enabled for each channel that is to generate
2706 Warnings: No range checking on any of the parameters is done.
2708 No context switches are allowed while executing this function.
2710 After this function all AIOPs on the controller are disabled,
2711 they can be enabled with sEnAiop().
2713 static int sPCIInitController(CONTROLLER_T * CtlP, int CtlNum,
2714 ByteIO_t * AiopIOList, int AiopIOListSize,
2715 WordIO_t ConfigIO, int IRQNum, Byte_t Frequency,
2716 int PeriodicOnly, int altChanRingIndicator,
2722 CtlP->AltChanRingIndicator = altChanRingIndicator;
2723 CtlP->UPCIRingInd = UPCIRingInd;
2724 CtlP->CtlNum = CtlNum;
2725 CtlP->CtlID = CTLID_0001; /* controller release 1 */
2726 CtlP->BusType = isPCI; /* controller release 1 */
2730 CtlP->PCIIO = ConfigIO + _PCI_9030_INT_CTRL;
2731 CtlP->PCIIO2 = ConfigIO + _PCI_9030_GPIO_CTRL;
2732 CtlP->AiopIntrBits = upci_aiop_intr_bits;
2736 (WordIO_t) ((ByteIO_t) AiopIOList[0] + _PCI_INT_FUNC);
2737 CtlP->AiopIntrBits = aiop_intr_bits;
2740 sPCIControllerEOI(CtlP); /* clear EOI if warm init */
2743 for (i = 0; i < AiopIOListSize; i++) {
2745 CtlP->AiopIO[i] = (WordIO_t) io;
2746 CtlP->AiopIntChanIO[i] = io + _INT_CHAN;
2748 CtlP->AiopID[i] = sReadAiopID(io); /* read AIOP ID */
2749 if (CtlP->AiopID[i] == AIOPID_NULL) /* if AIOP does not exist */
2750 break; /* done looking for AIOPs */
2752 CtlP->AiopNumChan[i] = sReadAiopNumChan((WordIO_t) io); /* num channels in AIOP */
2753 sOutW((WordIO_t) io + _INDX_ADDR, _CLK_PRE); /* clock prescaler */
2754 sOutB(io + _INDX_DATA, sClockPrescale);
2755 CtlP->NumAiop++; /* bump count of AIOPs */
2758 if (CtlP->NumAiop == 0)
2761 return (CtlP->NumAiop);
2764 /***************************************************************************
2765 Function: sReadAiopID
2766 Purpose: Read the AIOP idenfication number directly from an AIOP.
2767 Call: sReadAiopID(io)
2768 ByteIO_t io: AIOP base I/O address
2769 Return: int: Flag AIOPID_XXXX if a valid AIOP is found, where X
2770 is replace by an identifying number.
2771 Flag AIOPID_NULL if no valid AIOP is found
2772 Warnings: No context switches are allowed while executing this function.
2775 static int sReadAiopID(ByteIO_t io)
2777 Byte_t AiopID; /* ID byte from AIOP */
2779 sOutB(io + _CMD_REG, RESET_ALL); /* reset AIOP */
2780 sOutB(io + _CMD_REG, 0x0);
2781 AiopID = sInW(io + _CHN_STAT0) & 0x07;
2784 else /* AIOP does not exist */
2788 /***************************************************************************
2789 Function: sReadAiopNumChan
2790 Purpose: Read the number of channels available in an AIOP directly from
2792 Call: sReadAiopNumChan(io)
2793 WordIO_t io: AIOP base I/O address
2794 Return: int: The number of channels available
2795 Comments: The number of channels is determined by write/reads from identical
2796 offsets within the SRAM address spaces for channels 0 and 4.
2797 If the channel 4 space is mirrored to channel 0 it is a 4 channel
2798 AIOP, otherwise it is an 8 channel.
2799 Warnings: No context switches are allowed while executing this function.
2801 static int sReadAiopNumChan(WordIO_t io)
2804 static Byte_t R[4] = { 0x00, 0x00, 0x34, 0x12 };
2806 /* write to chan 0 SRAM */
2807 sOutDW((DWordIO_t) io + _INDX_ADDR, *((DWord_t *) & R[0]));
2808 sOutW(io + _INDX_ADDR, 0); /* read from SRAM, chan 0 */
2809 x = sInW(io + _INDX_DATA);
2810 sOutW(io + _INDX_ADDR, 0x4000); /* read from SRAM, chan 4 */
2811 if (x != sInW(io + _INDX_DATA)) /* if different must be 8 chan */
2817 /***************************************************************************
2819 Purpose: Initialization of a channel and channel structure
2820 Call: sInitChan(CtlP,ChP,AiopNum,ChanNum)
2821 CONTROLLER_T *CtlP; Ptr to controller structure
2822 CHANNEL_T *ChP; Ptr to channel structure
2823 int AiopNum; AIOP number within controller
2824 int ChanNum; Channel number within AIOP
2825 Return: int: 1 if initialization succeeded, 0 if it fails because channel
2826 number exceeds number of channels available in AIOP.
2827 Comments: This function must be called before a channel can be used.
2828 Warnings: No range checking on any of the parameters is done.
2830 No context switches are allowed while executing this function.
2832 static int sInitChan(CONTROLLER_T * CtlP, CHANNEL_T * ChP, int AiopNum,
2843 if (ChanNum >= CtlP->AiopNumChan[AiopNum])
2844 return 0; /* exceeds num chans in AIOP */
2846 /* Channel, AIOP, and controller identifiers */
2848 ChP->ChanID = CtlP->AiopID[AiopNum];
2849 ChP->AiopNum = AiopNum;
2850 ChP->ChanNum = ChanNum;
2852 /* Global direct addresses */
2853 AiopIO = CtlP->AiopIO[AiopNum];
2854 ChP->Cmd = (ByteIO_t) AiopIO + _CMD_REG;
2855 ChP->IntChan = (ByteIO_t) AiopIO + _INT_CHAN;
2856 ChP->IntMask = (ByteIO_t) AiopIO + _INT_MASK;
2857 ChP->IndexAddr = (DWordIO_t) AiopIO + _INDX_ADDR;
2858 ChP->IndexData = AiopIO + _INDX_DATA;
2860 /* Channel direct addresses */
2861 ChIOOff = AiopIO + ChP->ChanNum * 2;
2862 ChP->TxRxData = ChIOOff + _TD0;
2863 ChP->ChanStat = ChIOOff + _CHN_STAT0;
2864 ChP->TxRxCount = ChIOOff + _FIFO_CNT0;
2865 ChP->IntID = (ByteIO_t) AiopIO + ChP->ChanNum + _INT_ID0;
2867 /* Initialize the channel from the RData array */
2868 for (i = 0; i < RDATASIZE; i += 4) {
2870 R[1] = RData[i + 1] + 0x10 * ChanNum;
2871 R[2] = RData[i + 2];
2872 R[3] = RData[i + 3];
2873 sOutDW(ChP->IndexAddr, *((DWord_t *) & R[0]));
2877 for (i = 0; i < RREGDATASIZE; i += 4) {
2878 ChR[i] = RRegData[i];
2879 ChR[i + 1] = RRegData[i + 1] + 0x10 * ChanNum;
2880 ChR[i + 2] = RRegData[i + 2];
2881 ChR[i + 3] = RRegData[i + 3];
2884 /* Indexed registers */
2885 ChOff = (Word_t) ChanNum *0x1000;
2887 if (sClockPrescale == 0x14)
2892 ChP->BaudDiv[0] = (Byte_t) (ChOff + _BAUD);
2893 ChP->BaudDiv[1] = (Byte_t) ((ChOff + _BAUD) >> 8);
2894 ChP->BaudDiv[2] = (Byte_t) brd9600;
2895 ChP->BaudDiv[3] = (Byte_t) (brd9600 >> 8);
2896 sOutDW(ChP->IndexAddr, *(DWord_t *) & ChP->BaudDiv[0]);
2898 ChP->TxControl[0] = (Byte_t) (ChOff + _TX_CTRL);
2899 ChP->TxControl[1] = (Byte_t) ((ChOff + _TX_CTRL) >> 8);
2900 ChP->TxControl[2] = 0;
2901 ChP->TxControl[3] = 0;
2902 sOutDW(ChP->IndexAddr, *(DWord_t *) & ChP->TxControl[0]);
2904 ChP->RxControl[0] = (Byte_t) (ChOff + _RX_CTRL);
2905 ChP->RxControl[1] = (Byte_t) ((ChOff + _RX_CTRL) >> 8);
2906 ChP->RxControl[2] = 0;
2907 ChP->RxControl[3] = 0;
2908 sOutDW(ChP->IndexAddr, *(DWord_t *) & ChP->RxControl[0]);
2910 ChP->TxEnables[0] = (Byte_t) (ChOff + _TX_ENBLS);
2911 ChP->TxEnables[1] = (Byte_t) ((ChOff + _TX_ENBLS) >> 8);
2912 ChP->TxEnables[2] = 0;
2913 ChP->TxEnables[3] = 0;
2914 sOutDW(ChP->IndexAddr, *(DWord_t *) & ChP->TxEnables[0]);
2916 ChP->TxCompare[0] = (Byte_t) (ChOff + _TXCMP1);
2917 ChP->TxCompare[1] = (Byte_t) ((ChOff + _TXCMP1) >> 8);
2918 ChP->TxCompare[2] = 0;
2919 ChP->TxCompare[3] = 0;
2920 sOutDW(ChP->IndexAddr, *(DWord_t *) & ChP->TxCompare[0]);
2922 ChP->TxReplace1[0] = (Byte_t) (ChOff + _TXREP1B1);
2923 ChP->TxReplace1[1] = (Byte_t) ((ChOff + _TXREP1B1) >> 8);
2924 ChP->TxReplace1[2] = 0;
2925 ChP->TxReplace1[3] = 0;
2926 sOutDW(ChP->IndexAddr, *(DWord_t *) & ChP->TxReplace1[0]);
2928 ChP->TxReplace2[0] = (Byte_t) (ChOff + _TXREP2);
2929 ChP->TxReplace2[1] = (Byte_t) ((ChOff + _TXREP2) >> 8);
2930 ChP->TxReplace2[2] = 0;
2931 ChP->TxReplace2[3] = 0;
2932 sOutDW(ChP->IndexAddr, *(DWord_t *) & ChP->TxReplace2[0]);
2934 ChP->TxFIFOPtrs = ChOff + _TXF_OUTP;
2935 ChP->TxFIFO = ChOff + _TX_FIFO;
2937 sOutB(ChP->Cmd, (Byte_t) ChanNum | RESTXFCNT); /* apply reset Tx FIFO count */
2938 sOutB(ChP->Cmd, (Byte_t) ChanNum); /* remove reset Tx FIFO count */
2939 sOutW((WordIO_t) ChP->IndexAddr, ChP->TxFIFOPtrs); /* clear Tx in/out ptrs */
2940 sOutW(ChP->IndexData, 0);
2941 ChP->RxFIFOPtrs = ChOff + _RXF_OUTP;
2942 ChP->RxFIFO = ChOff + _RX_FIFO;
2944 sOutB(ChP->Cmd, (Byte_t) ChanNum | RESRXFCNT); /* apply reset Rx FIFO count */
2945 sOutB(ChP->Cmd, (Byte_t) ChanNum); /* remove reset Rx FIFO count */
2946 sOutW((WordIO_t) ChP->IndexAddr, ChP->RxFIFOPtrs); /* clear Rx out ptr */
2947 sOutW(ChP->IndexData, 0);
2948 sOutW((WordIO_t) ChP->IndexAddr, ChP->RxFIFOPtrs + 2); /* clear Rx in ptr */
2949 sOutW(ChP->IndexData, 0);
2950 ChP->TxPrioCnt = ChOff + _TXP_CNT;
2951 sOutW((WordIO_t) ChP->IndexAddr, ChP->TxPrioCnt);
2952 sOutB(ChP->IndexData, 0);
2953 ChP->TxPrioPtr = ChOff + _TXP_PNTR;
2954 sOutW((WordIO_t) ChP->IndexAddr, ChP->TxPrioPtr);
2955 sOutB(ChP->IndexData, 0);
2956 ChP->TxPrioBuf = ChOff + _TXP_BUF;
2957 sEnRxProcessor(ChP); /* start the Rx processor */
2962 /***************************************************************************
2963 Function: sStopRxProcessor
2964 Purpose: Stop the receive processor from processing a channel.
2965 Call: sStopRxProcessor(ChP)
2966 CHANNEL_T *ChP; Ptr to channel structure
2968 Comments: The receive processor can be started again with sStartRxProcessor().
2969 This function causes the receive processor to skip over the
2970 stopped channel. It does not stop it from processing other channels.
2972 Warnings: No context switches are allowed while executing this function.
2974 Do not leave the receive processor stopped for more than one
2977 After calling this function a delay of 4 uS is required to ensure
2978 that the receive processor is no longer processing this channel.
2980 static void sStopRxProcessor(CHANNEL_T * ChP)
2988 sOutDW(ChP->IndexAddr, *(DWord_t *) & R[0]);
2991 /***************************************************************************
2992 Function: sFlushRxFIFO
2993 Purpose: Flush the Rx FIFO
2994 Call: sFlushRxFIFO(ChP)
2995 CHANNEL_T *ChP; Ptr to channel structure
2997 Comments: To prevent data from being enqueued or dequeued in the Tx FIFO
2998 while it is being flushed the receive processor is stopped
2999 and the transmitter is disabled. After these operations a
3000 4 uS delay is done before clearing the pointers to allow
3001 the receive processor to stop. These items are handled inside
3003 Warnings: No context switches are allowed while executing this function.
3005 static void sFlushRxFIFO(CHANNEL_T * ChP)
3008 Byte_t Ch; /* channel number within AIOP */
3009 int RxFIFOEnabled; /* 1 if Rx FIFO enabled */
3011 if (sGetRxCnt(ChP) == 0) /* Rx FIFO empty */
3012 return; /* don't need to flush */
3015 if (ChP->R[0x32] == 0x08) { /* Rx FIFO is enabled */
3017 sDisRxFIFO(ChP); /* disable it */
3018 for (i = 0; i < 2000 / 200; i++) /* delay 2 uS to allow proc to disable FIFO */
3019 sInB(ChP->IntChan); /* depends on bus i/o timing */
3021 sGetChanStatus(ChP); /* clear any pending Rx errors in chan stat */
3022 Ch = (Byte_t) sGetChanNum(ChP);
3023 sOutB(ChP->Cmd, Ch | RESRXFCNT); /* apply reset Rx FIFO count */
3024 sOutB(ChP->Cmd, Ch); /* remove reset Rx FIFO count */
3025 sOutW((WordIO_t) ChP->IndexAddr, ChP->RxFIFOPtrs); /* clear Rx out ptr */
3026 sOutW(ChP->IndexData, 0);
3027 sOutW((WordIO_t) ChP->IndexAddr, ChP->RxFIFOPtrs + 2); /* clear Rx in ptr */
3028 sOutW(ChP->IndexData, 0);
3030 sEnRxFIFO(ChP); /* enable Rx FIFO */
3033 /***************************************************************************
3034 Function: sFlushTxFIFO
3035 Purpose: Flush the Tx FIFO
3036 Call: sFlushTxFIFO(ChP)
3037 CHANNEL_T *ChP; Ptr to channel structure
3039 Comments: To prevent data from being enqueued or dequeued in the Tx FIFO
3040 while it is being flushed the receive processor is stopped
3041 and the transmitter is disabled. After these operations a
3042 4 uS delay is done before clearing the pointers to allow
3043 the receive processor to stop. These items are handled inside
3045 Warnings: No context switches are allowed while executing this function.
3047 static void sFlushTxFIFO(CHANNEL_T * ChP)
3050 Byte_t Ch; /* channel number within AIOP */
3051 int TxEnabled; /* 1 if transmitter enabled */
3053 if (sGetTxCnt(ChP) == 0) /* Tx FIFO empty */
3054 return; /* don't need to flush */
3057 if (ChP->TxControl[3] & TX_ENABLE) {
3059 sDisTransmit(ChP); /* disable transmitter */
3061 sStopRxProcessor(ChP); /* stop Rx processor */
3062 for (i = 0; i < 4000 / 200; i++) /* delay 4 uS to allow proc to stop */
3063 sInB(ChP->IntChan); /* depends on bus i/o timing */
3064 Ch = (Byte_t) sGetChanNum(ChP);
3065 sOutB(ChP->Cmd, Ch | RESTXFCNT); /* apply reset Tx FIFO count */
3066 sOutB(ChP->Cmd, Ch); /* remove reset Tx FIFO count */
3067 sOutW((WordIO_t) ChP->IndexAddr, ChP->TxFIFOPtrs); /* clear Tx in/out ptrs */
3068 sOutW(ChP->IndexData, 0);
3070 sEnTransmit(ChP); /* enable transmitter */
3071 sStartRxProcessor(ChP); /* restart Rx processor */
3074 /***************************************************************************
3075 Function: sWriteTxPrioByte
3076 Purpose: Write a byte of priority transmit data to a channel
3077 Call: sWriteTxPrioByte(ChP,Data)
3078 CHANNEL_T *ChP; Ptr to channel structure
3079 Byte_t Data; The transmit data byte
3081 Return: int: 1 if the bytes is successfully written, otherwise 0.
3083 Comments: The priority byte is transmitted before any data in the Tx FIFO.
3085 Warnings: No context switches are allowed while executing this function.
3087 static int sWriteTxPrioByte(CHANNEL_T * ChP, Byte_t Data)
3089 Byte_t DWBuf[4]; /* buffer for double word writes */
3090 Word_t *WordPtr; /* must be far because Win SS != DS */
3091 register DWordIO_t IndexAddr;
3093 if (sGetTxCnt(ChP) > 1) { /* write it to Tx priority buffer */
3094 IndexAddr = ChP->IndexAddr;
3095 sOutW((WordIO_t) IndexAddr, ChP->TxPrioCnt); /* get priority buffer status */
3096 if (sInB((ByteIO_t) ChP->IndexData) & PRI_PEND) /* priority buffer busy */
3097 return (0); /* nothing sent */
3099 WordPtr = (Word_t *) (&DWBuf[0]);
3100 *WordPtr = ChP->TxPrioBuf; /* data byte address */
3102 DWBuf[2] = Data; /* data byte value */
3103 sOutDW(IndexAddr, *((DWord_t *) (&DWBuf[0]))); /* write it out */
3105 *WordPtr = ChP->TxPrioCnt; /* Tx priority count address */
3107 DWBuf[2] = PRI_PEND + 1; /* indicate 1 byte pending */
3108 DWBuf[3] = 0; /* priority buffer pointer */
3109 sOutDW(IndexAddr, *((DWord_t *) (&DWBuf[0]))); /* write it out */
3110 } else { /* write it to Tx FIFO */
3112 sWriteTxByte(sGetTxRxDataIO(ChP), Data);
3114 return (1); /* 1 byte sent */
3117 /***************************************************************************
3118 Function: sEnInterrupts
3119 Purpose: Enable one or more interrupts for a channel
3120 Call: sEnInterrupts(ChP,Flags)
3121 CHANNEL_T *ChP; Ptr to channel structure
3122 Word_t Flags: Interrupt enable flags, can be any combination
3123 of the following flags:
3124 TXINT_EN: Interrupt on Tx FIFO empty
3125 RXINT_EN: Interrupt on Rx FIFO at trigger level (see
3127 SRCINT_EN: Interrupt on SRC (Special Rx Condition)
3128 MCINT_EN: Interrupt on modem input change
3129 CHANINT_EN: Allow channel interrupt signal to the AIOP's
3130 Interrupt Channel Register.
3132 Comments: If an interrupt enable flag is set in Flags, that interrupt will be
3133 enabled. If an interrupt enable flag is not set in Flags, that
3134 interrupt will not be changed. Interrupts can be disabled with
3135 function sDisInterrupts().
3137 This function sets the appropriate bit for the channel in the AIOP's
3138 Interrupt Mask Register if the CHANINT_EN flag is set. This allows
3139 this channel's bit to be set in the AIOP's Interrupt Channel Register.
3141 Interrupts must also be globally enabled before channel interrupts
3142 will be passed on to the host. This is done with function
3145 In some cases it may be desirable to disable interrupts globally but
3146 enable channel interrupts. This would allow the global interrupt
3147 status register to be used to determine which AIOPs need service.
3149 static void sEnInterrupts(CHANNEL_T * ChP, Word_t Flags)
3151 Byte_t Mask; /* Interrupt Mask Register */
3153 ChP->RxControl[2] |=
3154 ((Byte_t) Flags & (RXINT_EN | SRCINT_EN | MCINT_EN));
3156 sOutDW(ChP->IndexAddr, *(DWord_t *) & ChP->RxControl[0]);
3158 ChP->TxControl[2] |= ((Byte_t) Flags & TXINT_EN);
3160 sOutDW(ChP->IndexAddr, *(DWord_t *) & ChP->TxControl[0]);
3162 if (Flags & CHANINT_EN) {
3163 Mask = sInB(ChP->IntMask) | sBitMapSetTbl[ChP->ChanNum];
3164 sOutB(ChP->IntMask, Mask);
3168 /***************************************************************************
3169 Function: sDisInterrupts
3170 Purpose: Disable one or more interrupts for a channel
3171 Call: sDisInterrupts(ChP,Flags)
3172 CHANNEL_T *ChP; Ptr to channel structure
3173 Word_t Flags: Interrupt flags, can be any combination
3174 of the following flags:
3175 TXINT_EN: Interrupt on Tx FIFO empty
3176 RXINT_EN: Interrupt on Rx FIFO at trigger level (see
3178 SRCINT_EN: Interrupt on SRC (Special Rx Condition)
3179 MCINT_EN: Interrupt on modem input change
3180 CHANINT_EN: Disable channel interrupt signal to the
3181 AIOP's Interrupt Channel Register.
3183 Comments: If an interrupt flag is set in Flags, that interrupt will be
3184 disabled. If an interrupt flag is not set in Flags, that
3185 interrupt will not be changed. Interrupts can be enabled with
3186 function sEnInterrupts().
3188 This function clears the appropriate bit for the channel in the AIOP's
3189 Interrupt Mask Register if the CHANINT_EN flag is set. This blocks
3190 this channel's bit from being set in the AIOP's Interrupt Channel
3193 static void sDisInterrupts(CHANNEL_T * ChP, Word_t Flags)
3195 Byte_t Mask; /* Interrupt Mask Register */
3197 ChP->RxControl[2] &=
3198 ~((Byte_t) Flags & (RXINT_EN | SRCINT_EN | MCINT_EN));
3199 sOutDW(ChP->IndexAddr, *(DWord_t *) & ChP->RxControl[0]);
3200 ChP->TxControl[2] &= ~((Byte_t) Flags & TXINT_EN);
3201 sOutDW(ChP->IndexAddr, *(DWord_t *) & ChP->TxControl[0]);
3203 if (Flags & CHANINT_EN) {
3204 Mask = sInB(ChP->IntMask) & sBitMapClrTbl[ChP->ChanNum];
3205 sOutB(ChP->IntMask, Mask);
3209 static void sSetInterfaceMode(CHANNEL_T * ChP, Byte_t mode)
3211 sOutB(ChP->CtlP->AiopIO[2], (mode & 0x18) | ChP->ChanNum);
3215 * Not an official SSCI function, but how to reset RocketModems.
3218 static void sModemReset(CONTROLLER_T * CtlP, int chan, int on)
3223 addr = CtlP->AiopIO[0] + 0x400;
3224 val = sInB(CtlP->MReg3IO);
3225 /* if AIOP[1] is not enabled, enable it */
3226 if ((val & 2) == 0) {
3227 val = sInB(CtlP->MReg2IO);
3228 sOutB(CtlP->MReg2IO, (val & 0xfc) | (1 & 0x03));
3229 sOutB(CtlP->MBaseIO, (unsigned char) (addr >> 6));
3235 sOutB(addr + chan, 0); /* apply or remove reset */
3240 * Not an official SSCI function, but how to reset RocketModems.
3243 static void sPCIModemReset(CONTROLLER_T * CtlP, int chan, int on)
3247 addr = CtlP->AiopIO[0] + 0x40; /* 2nd AIOP */
3250 sOutB(addr + chan, 0); /* apply or remove reset */
3253 /* Resets the speaker controller on RocketModem II and III devices */
3254 static void rmSpeakerReset(CONTROLLER_T * CtlP, unsigned long model)
3258 /* RocketModem II speaker control is at the 8th port location of offset 0x40 */
3259 if ((model == MODEL_RP4M) || (model == MODEL_RP6M)) {
3260 addr = CtlP->AiopIO[0] + 0x4F;
3264 /* RocketModem III speaker control is at the 1st port location of offset 0x80 */
3265 if ((model == MODEL_UPCI_RM3_8PORT)
3266 || (model == MODEL_UPCI_RM3_4PORT)) {
3267 addr = CtlP->AiopIO[0] + 0x88;
3272 /* Returns the line number given the controller (board), aiop and channel number */
3273 static unsigned char GetLineNumber(int ctrl, int aiop, int ch)
3275 return lineNumbers[(ctrl << 5) | (aiop << 3) | ch];
3279 * Stores the line number associated with a given controller (board), aiop
3280 * and channel number.
3281 * Returns: The line number assigned
3283 static unsigned char SetLineNumber(int ctrl, int aiop, int ch)
3285 lineNumbers[(ctrl << 5) | (aiop << 3) | ch] = nextLineNumber++;
3286 return (nextLineNumber - 1);