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 wake_up_interruptible(&tty->write_wait);
478 #ifdef ROCKETPORT_HAVE_POLL_WAIT
479 wake_up_interruptible(&tty->poll_wait);
483 spin_unlock_irqrestore(&info->slock, flags);
485 #ifdef ROCKET_DEBUG_INTR
486 printk(KERN_INFO "(%d,%d,%d,%d)...", info->xmit_cnt, info->xmit_head,
487 info->xmit_tail, info->xmit_fifo_room);
492 * Called when a serial port signals it has read data in it's RX FIFO.
493 * It checks what interrupts are pending and services them, including
494 * receiving serial data.
496 static void rp_handle_port(struct r_port *info)
499 struct tty_struct *tty;
500 unsigned int IntMask, ChanStatus;
505 if ((info->flags & ROCKET_INITIALIZED) == 0) {
506 printk(KERN_INFO "rp: WARNING: rp_handle_port called with info->flags & NOT_INIT\n");
510 printk(KERN_INFO "rp: WARNING: rp_handle_port called with info->tty==NULL\n");
516 IntMask = sGetChanIntID(cp) & info->intmask;
517 #ifdef ROCKET_DEBUG_INTR
518 printk(KERN_INFO "rp_interrupt %02x...", IntMask);
520 ChanStatus = sGetChanStatus(cp);
521 if (IntMask & RXF_TRIG) { /* Rx FIFO trigger level */
522 rp_do_receive(info, tty, cp, ChanStatus);
524 if (IntMask & DELTA_CD) { /* CD change */
525 #if (defined(ROCKET_DEBUG_OPEN) || defined(ROCKET_DEBUG_INTR) || defined(ROCKET_DEBUG_HANGUP))
526 printk(KERN_INFO "ttyR%d CD now %s...", info->line,
527 (ChanStatus & CD_ACT) ? "on" : "off");
529 if (!(ChanStatus & CD_ACT) && info->cd_status) {
530 #ifdef ROCKET_DEBUG_HANGUP
531 printk(KERN_INFO "CD drop, calling hangup.\n");
535 info->cd_status = (ChanStatus & CD_ACT) ? 1 : 0;
536 wake_up_interruptible(&info->open_wait);
538 #ifdef ROCKET_DEBUG_INTR
539 if (IntMask & DELTA_CTS) { /* CTS change */
540 printk(KERN_INFO "CTS change...\n");
542 if (IntMask & DELTA_DSR) { /* DSR change */
543 printk(KERN_INFO "DSR change...\n");
549 * The top level polling routine. Repeats every 1/100 HZ (10ms).
551 static void rp_do_poll(unsigned long dummy)
554 int ctrl, aiop, ch, line, i;
555 unsigned int xmitmask;
556 unsigned int CtlMask;
557 unsigned char AiopMask;
560 /* Walk through all the boards (ctrl's) */
561 for (ctrl = 0; ctrl < max_board; ctrl++) {
562 if (rcktpt_io_addr[ctrl] <= 0)
565 /* Get a ptr to the board's control struct */
566 ctlp = sCtlNumToCtlPtr(ctrl);
568 /* Get the interupt status from the board */
570 if (ctlp->BusType == isPCI)
571 CtlMask = sPCIGetControllerIntStatus(ctlp);
574 CtlMask = sGetControllerIntStatus(ctlp);
576 /* Check if any AIOP read bits are set */
577 for (aiop = 0; CtlMask; aiop++) {
578 bit = ctlp->AiopIntrBits[aiop];
581 AiopMask = sGetAiopIntStatus(ctlp, aiop);
583 /* Check if any port read bits are set */
584 for (ch = 0; AiopMask; AiopMask >>= 1, ch++) {
587 /* Get the line number (/dev/ttyRx number). */
588 /* Read the data from the port. */
589 line = GetLineNumber(ctrl, aiop, ch);
590 rp_handle_port(rp_table[line]);
596 xmitmask = xmit_flags[ctrl];
599 * xmit_flags contains bit-significant flags, indicating there is data
600 * to xmit on the port. Bit 0 is port 0 on this board, bit 1 is port
601 * 1, ... (32 total possible). The variable i has the aiop and ch
602 * numbers encoded in it (port 0-7 are aiop0, 8-15 are aiop1, etc).
605 for (i = 0; i < rocketModel[ctrl].numPorts; i++) {
606 if (xmitmask & (1 << i)) {
607 aiop = (i & 0x18) >> 3;
609 line = GetLineNumber(ctrl, aiop, ch);
610 rp_do_transmit(rp_table[line]);
617 * Reset the timer so we get called at the next clock tick (10ms).
619 if (atomic_read(&rp_num_ports_open))
620 mod_timer(&rocket_timer, jiffies + POLL_PERIOD);
624 * Initializes the r_port structure for a port, as well as enabling the port on
626 * Inputs: board, aiop, chan numbers
628 static void init_r_port(int board, int aiop, int chan, struct pci_dev *pci_dev)
635 /* Get the next available line number */
636 line = SetLineNumber(board, aiop, chan);
638 ctlp = sCtlNumToCtlPtr(board);
640 /* Get a r_port struct for the port, fill it in and save it globally, indexed by line number */
641 info = kmalloc(sizeof (struct r_port), GFP_KERNEL);
643 printk(KERN_INFO "Couldn't allocate info struct for line #%d\n", line);
646 memset(info, 0, sizeof (struct r_port));
648 info->magic = RPORT_MAGIC;
654 info->closing_wait = 3000;
655 info->close_delay = 50;
656 init_waitqueue_head(&info->open_wait);
657 init_waitqueue_head(&info->close_wait);
658 info->flags &= ~ROCKET_MODE_MASK;
659 switch (pc104[board][line]) {
661 info->flags |= ROCKET_MODE_RS422;
664 info->flags |= ROCKET_MODE_RS485;
668 info->flags |= ROCKET_MODE_RS232;
672 info->intmask = RXF_TRIG | TXFIFO_MT | SRC_INT | DELTA_CD | DELTA_CTS | DELTA_DSR;
673 if (sInitChan(ctlp, &info->channel, aiop, chan) == 0) {
674 printk(KERN_INFO "RocketPort sInitChan(%d, %d, %d) failed!\n", board, aiop, chan);
679 rocketMode = info->flags & ROCKET_MODE_MASK;
681 if ((info->flags & ROCKET_RTS_TOGGLE) || (rocketMode == ROCKET_MODE_RS485))
682 sEnRTSToggle(&info->channel);
684 sDisRTSToggle(&info->channel);
686 if (ctlp->boardType == ROCKET_TYPE_PC104) {
687 switch (rocketMode) {
688 case ROCKET_MODE_RS485:
689 sSetInterfaceMode(&info->channel, InterfaceModeRS485);
691 case ROCKET_MODE_RS422:
692 sSetInterfaceMode(&info->channel, InterfaceModeRS422);
694 case ROCKET_MODE_RS232:
696 if (info->flags & ROCKET_RTS_TOGGLE)
697 sSetInterfaceMode(&info->channel, InterfaceModeRS232T);
699 sSetInterfaceMode(&info->channel, InterfaceModeRS232);
703 spin_lock_init(&info->slock);
704 sema_init(&info->write_sem, 1);
705 rp_table[line] = info;
707 tty_register_device(rocket_driver, line, &pci_dev->dev);
711 * Configures a rocketport port according to its termio settings. Called from
712 * user mode into the driver (exception handler). *info CD manipulation is spinlock protected.
714 static void configure_r_port(struct r_port *info,
715 struct termios *old_termios)
720 int bits, baud, divisor;
723 if (!info->tty || !info->tty->termios)
726 cflag = info->tty->termios->c_cflag;
728 /* Byte size and parity */
729 if ((cflag & CSIZE) == CS8) {
736 if (cflag & CSTOPB) {
743 if (cflag & PARENB) {
746 if (cflag & PARODD) {
756 baud = tty_get_baud_rate(info->tty);
759 divisor = ((rp_baud_base[info->board] + (baud >> 1)) / baud) - 1;
760 if ((divisor >= 8192 || divisor < 0) && old_termios) {
761 info->tty->termios->c_cflag &= ~CBAUD;
762 info->tty->termios->c_cflag |=
763 (old_termios->c_cflag & CBAUD);
764 baud = tty_get_baud_rate(info->tty);
767 divisor = (rp_baud_base[info->board] / baud) - 1;
769 if (divisor >= 8192 || divisor < 0) {
771 divisor = (rp_baud_base[info->board] / baud) - 1;
773 info->cps = baud / bits;
774 sSetBaud(cp, divisor);
776 if (cflag & CRTSCTS) {
777 info->intmask |= DELTA_CTS;
780 info->intmask &= ~DELTA_CTS;
783 if (cflag & CLOCAL) {
784 info->intmask &= ~DELTA_CD;
786 spin_lock_irqsave(&info->slock, flags);
787 if (sGetChanStatus(cp) & CD_ACT)
791 info->intmask |= DELTA_CD;
792 spin_unlock_irqrestore(&info->slock, flags);
796 * Handle software flow control in the board
798 #ifdef ROCKET_SOFT_FLOW
799 if (I_IXON(info->tty)) {
800 sEnTxSoftFlowCtl(cp);
801 if (I_IXANY(info->tty)) {
806 sSetTxXONChar(cp, START_CHAR(info->tty));
807 sSetTxXOFFChar(cp, STOP_CHAR(info->tty));
809 sDisTxSoftFlowCtl(cp);
816 * Set up ignore/read mask words
818 info->read_status_mask = STMRCVROVRH | 0xFF;
819 if (I_INPCK(info->tty))
820 info->read_status_mask |= STMFRAMEH | STMPARITYH;
821 if (I_BRKINT(info->tty) || I_PARMRK(info->tty))
822 info->read_status_mask |= STMBREAKH;
825 * Characters to ignore
827 info->ignore_status_mask = 0;
828 if (I_IGNPAR(info->tty))
829 info->ignore_status_mask |= STMFRAMEH | STMPARITYH;
830 if (I_IGNBRK(info->tty)) {
831 info->ignore_status_mask |= STMBREAKH;
833 * If we're ignoring parity and break indicators,
834 * ignore overruns too. (For real raw support).
836 if (I_IGNPAR(info->tty))
837 info->ignore_status_mask |= STMRCVROVRH;
840 rocketMode = info->flags & ROCKET_MODE_MASK;
842 if ((info->flags & ROCKET_RTS_TOGGLE)
843 || (rocketMode == ROCKET_MODE_RS485))
848 sSetRTS(&info->channel);
850 if (cp->CtlP->boardType == ROCKET_TYPE_PC104) {
851 switch (rocketMode) {
852 case ROCKET_MODE_RS485:
853 sSetInterfaceMode(cp, InterfaceModeRS485);
855 case ROCKET_MODE_RS422:
856 sSetInterfaceMode(cp, InterfaceModeRS422);
858 case ROCKET_MODE_RS232:
860 if (info->flags & ROCKET_RTS_TOGGLE)
861 sSetInterfaceMode(cp, InterfaceModeRS232T);
863 sSetInterfaceMode(cp, InterfaceModeRS232);
869 /* info->count is considered critical, protected by spinlocks. */
870 static int block_til_ready(struct tty_struct *tty, struct file *filp,
873 DECLARE_WAITQUEUE(wait, current);
875 int do_clocal = 0, extra_count = 0;
879 * If the device is in the middle of being closed, then block
880 * until it's done, and then try again.
882 if (tty_hung_up_p(filp))
883 return ((info->flags & ROCKET_HUP_NOTIFY) ? -EAGAIN : -ERESTARTSYS);
884 if (info->flags & ROCKET_CLOSING) {
885 interruptible_sleep_on(&info->close_wait);
886 return ((info->flags & ROCKET_HUP_NOTIFY) ? -EAGAIN : -ERESTARTSYS);
890 * If non-blocking mode is set, or the port is not enabled,
891 * then make the check up front and then exit.
893 if ((filp->f_flags & O_NONBLOCK) || (tty->flags & (1 << TTY_IO_ERROR))) {
894 info->flags |= ROCKET_NORMAL_ACTIVE;
897 if (tty->termios->c_cflag & CLOCAL)
901 * Block waiting for the carrier detect and the line to become free. While we are in
902 * this loop, info->count is dropped by one, so that rp_close() knows when to free things.
903 * We restore it upon exit, either normal or abnormal.
906 add_wait_queue(&info->open_wait, &wait);
907 #ifdef ROCKET_DEBUG_OPEN
908 printk(KERN_INFO "block_til_ready before block: ttyR%d, count = %d\n", info->line, info->count);
910 spin_lock_irqsave(&info->slock, flags);
912 #ifdef ROCKET_DISABLE_SIMUSAGE
913 info->flags |= ROCKET_NORMAL_ACTIVE;
915 if (!tty_hung_up_p(filp)) {
920 info->blocked_open++;
922 spin_unlock_irqrestore(&info->slock, flags);
925 if (tty->termios->c_cflag & CBAUD) {
926 sSetDTR(&info->channel);
927 sSetRTS(&info->channel);
929 set_current_state(TASK_INTERRUPTIBLE);
930 if (tty_hung_up_p(filp) || !(info->flags & ROCKET_INITIALIZED)) {
931 if (info->flags & ROCKET_HUP_NOTIFY)
934 retval = -ERESTARTSYS;
937 if (!(info->flags & ROCKET_CLOSING) && (do_clocal || (sGetChanStatusLo(&info->channel) & CD_ACT)))
939 if (signal_pending(current)) {
940 retval = -ERESTARTSYS;
943 #ifdef ROCKET_DEBUG_OPEN
944 printk(KERN_INFO "block_til_ready blocking: ttyR%d, count = %d, flags=0x%0x\n",
945 info->line, info->count, info->flags);
947 schedule(); /* Don't hold spinlock here, will hang PC */
949 current->state = TASK_RUNNING;
950 remove_wait_queue(&info->open_wait, &wait);
952 spin_lock_irqsave(&info->slock, flags);
956 info->blocked_open--;
958 spin_unlock_irqrestore(&info->slock, flags);
960 #ifdef ROCKET_DEBUG_OPEN
961 printk(KERN_INFO "block_til_ready after blocking: ttyR%d, count = %d\n",
962 info->line, info->count);
966 info->flags |= ROCKET_NORMAL_ACTIVE;
971 * Exception handler that opens a serial port. Creates xmit_buf storage, fills in
972 * port's r_port struct. Initializes the port hardware.
974 static int rp_open(struct tty_struct *tty, struct file *filp)
977 int line = 0, retval;
981 line = TTY_GET_LINE(tty);
982 if ((line < 0) || (line >= MAX_RP_PORTS) || ((info = rp_table[line]) == NULL))
985 page = __get_free_page(GFP_KERNEL);
989 if (info->flags & ROCKET_CLOSING) {
990 interruptible_sleep_on(&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...", atomic_read(&rp_num_ports_open));
1013 #ifdef ROCKET_DEBUG_OPEN
1014 printk(KERN_INFO "rp_open ttyR%d, count=%d\n", info->line, info->count);
1018 * Info->count is now 1; so it's safe to sleep now.
1020 info->session = current->signal->session;
1021 info->pgrp = process_group(current);
1023 if ((info->flags & ROCKET_INITIALIZED) == 0) {
1024 cp = &info->channel;
1025 sSetRxTrigger(cp, TRIG_1);
1026 if (sGetChanStatus(cp) & CD_ACT)
1027 info->cd_status = 1;
1029 info->cd_status = 0;
1030 sDisRxStatusMode(cp);
1034 sEnInterrupts(cp, (TXINT_EN | MCINT_EN | RXINT_EN | SRCINT_EN | CHANINT_EN));
1035 sSetRxTrigger(cp, TRIG_1);
1038 sDisRxStatusMode(cp);
1042 sDisTxSoftFlowCtl(cp);
1047 info->flags |= ROCKET_INITIALIZED;
1050 * Set up the tty->alt_speed kludge
1052 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_HI)
1053 info->tty->alt_speed = 57600;
1054 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_VHI)
1055 info->tty->alt_speed = 115200;
1056 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_SHI)
1057 info->tty->alt_speed = 230400;
1058 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_WARP)
1059 info->tty->alt_speed = 460800;
1061 configure_r_port(info, NULL);
1062 if (tty->termios->c_cflag & CBAUD) {
1067 /* Starts (or resets) the maint polling loop */
1068 mod_timer(&rocket_timer, jiffies + POLL_PERIOD);
1070 retval = block_til_ready(tty, filp, info);
1072 #ifdef ROCKET_DEBUG_OPEN
1073 printk(KERN_INFO "rp_open returning after block_til_ready with %d\n", retval);
1081 * Exception handler that closes a serial port. info->count is considered critical.
1083 static void rp_close(struct tty_struct *tty, struct file *filp)
1085 struct r_port *info = (struct r_port *) tty->driver_data;
1086 unsigned long flags;
1090 if (rocket_paranoia_check(info, "rp_close"))
1093 #ifdef ROCKET_DEBUG_OPEN
1094 printk(KERN_INFO "rp_close ttyR%d, count = %d\n", info->line, info->count);
1097 if (tty_hung_up_p(filp))
1099 spin_lock_irqsave(&info->slock, flags);
1101 if ((tty->count == 1) && (info->count != 1)) {
1103 * Uh, oh. tty->count is 1, which means that the tty
1104 * structure will be freed. Info->count should always
1105 * be one in these conditions. If it's greater than
1106 * one, we've got real problems, since it means the
1107 * serial port won't be shutdown.
1109 printk(KERN_INFO "rp_close: bad serial port count; tty->count is 1, "
1110 "info->count is %d\n", info->count);
1113 if (--info->count < 0) {
1114 printk(KERN_INFO "rp_close: bad serial port count for ttyR%d: %d\n",
1115 info->line, info->count);
1119 spin_unlock_irqrestore(&info->slock, flags);
1122 info->flags |= ROCKET_CLOSING;
1123 spin_unlock_irqrestore(&info->slock, flags);
1125 cp = &info->channel;
1128 * Notify the line discpline to only process XON/XOFF characters
1133 * If transmission was throttled by the application request,
1134 * just flush the xmit buffer.
1136 if (tty->flow_stopped)
1137 rp_flush_buffer(tty);
1140 * Wait for the transmit buffer to clear
1142 if (info->closing_wait != ROCKET_CLOSING_WAIT_NONE)
1143 tty_wait_until_sent(tty, info->closing_wait);
1145 * Before we drop DTR, make sure the UART transmitter
1146 * has completely drained; this is especially
1147 * important if there is a transmit FIFO!
1149 timeout = (sGetTxCnt(cp) + 1) * HZ / info->cps;
1152 rp_wait_until_sent(tty, timeout);
1153 clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
1156 sDisInterrupts(cp, (TXINT_EN | MCINT_EN | RXINT_EN | SRCINT_EN | CHANINT_EN));
1158 sDisTxSoftFlowCtl(cp);
1166 if (TTY_DRIVER_FLUSH_BUFFER_EXISTS(tty))
1167 TTY_DRIVER_FLUSH_BUFFER(tty);
1169 tty_ldisc_flush(tty);
1171 clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
1173 if (info->blocked_open) {
1174 if (info->close_delay) {
1175 msleep_interruptible(jiffies_to_msecs(info->close_delay));
1177 wake_up_interruptible(&info->open_wait);
1179 if (info->xmit_buf) {
1180 free_page((unsigned long) info->xmit_buf);
1181 info->xmit_buf = NULL;
1184 info->flags &= ~(ROCKET_INITIALIZED | ROCKET_CLOSING | ROCKET_NORMAL_ACTIVE);
1186 wake_up_interruptible(&info->close_wait);
1187 atomic_dec(&rp_num_ports_open);
1189 #ifdef ROCKET_DEBUG_OPEN
1190 printk(KERN_INFO "rocket mod-- = %d...", atomic_read(&rp_num_ports_open));
1191 printk(KERN_INFO "rp_close ttyR%d complete shutdown\n", info->line);
1196 static void rp_set_termios(struct tty_struct *tty,
1197 struct termios *old_termios)
1199 struct r_port *info = (struct r_port *) tty->driver_data;
1203 if (rocket_paranoia_check(info, "rp_set_termios"))
1206 cflag = tty->termios->c_cflag;
1208 if (cflag == old_termios->c_cflag)
1212 * This driver doesn't support CS5 or CS6
1214 if (((cflag & CSIZE) == CS5) || ((cflag & CSIZE) == CS6))
1215 tty->termios->c_cflag =
1216 ((cflag & ~CSIZE) | (old_termios->c_cflag & CSIZE));
1218 configure_r_port(info, old_termios);
1220 cp = &info->channel;
1222 /* Handle transition to B0 status */
1223 if ((old_termios->c_cflag & CBAUD) && !(tty->termios->c_cflag & CBAUD)) {
1228 /* Handle transition away from B0 status */
1229 if (!(old_termios->c_cflag & CBAUD) && (tty->termios->c_cflag & CBAUD)) {
1230 if (!tty->hw_stopped || !(tty->termios->c_cflag & CRTSCTS))
1235 if ((old_termios->c_cflag & CRTSCTS) && !(tty->termios->c_cflag & CRTSCTS)) {
1236 tty->hw_stopped = 0;
1241 static void rp_break(struct tty_struct *tty, int break_state)
1243 struct r_port *info = (struct r_port *) tty->driver_data;
1244 unsigned long flags;
1246 if (rocket_paranoia_check(info, "rp_break"))
1249 spin_lock_irqsave(&info->slock, flags);
1250 if (break_state == -1)
1251 sSendBreak(&info->channel);
1253 sClrBreak(&info->channel);
1254 spin_unlock_irqrestore(&info->slock, flags);
1258 * sGetChanRI used to be a macro in rocket_int.h. When the functionality for
1259 * the UPCI boards was added, it was decided to make this a function because
1260 * the macro was getting too complicated. All cases except the first one
1261 * (UPCIRingInd) are taken directly from the original macro.
1263 static int sGetChanRI(CHANNEL_T * ChP)
1265 CONTROLLER_t *CtlP = ChP->CtlP;
1266 int ChanNum = ChP->ChanNum;
1269 if (CtlP->UPCIRingInd)
1270 RingInd = !(sInB(CtlP->UPCIRingInd) & sBitMapSetTbl[ChanNum]);
1271 else if (CtlP->AltChanRingIndicator)
1272 RingInd = sInB((ByteIO_t) (ChP->ChanStat + 8)) & DSR_ACT;
1273 else if (CtlP->boardType == ROCKET_TYPE_PC104)
1274 RingInd = !(sInB(CtlP->AiopIO[3]) & sBitMapSetTbl[ChanNum]);
1279 /********************************************************************************************/
1280 /* Here are the routines used by rp_ioctl. These are all called from exception handlers. */
1283 * Returns the state of the serial modem control lines. These next 2 functions
1284 * are the way kernel versions > 2.5 handle modem control lines rather than IOCTLs.
1286 static int rp_tiocmget(struct tty_struct *tty, struct file *file)
1288 struct r_port *info = (struct r_port *)tty->driver_data;
1289 unsigned int control, result, ChanStatus;
1291 ChanStatus = sGetChanStatusLo(&info->channel);
1292 control = info->channel.TxControl[3];
1293 result = ((control & SET_RTS) ? TIOCM_RTS : 0) |
1294 ((control & SET_DTR) ? TIOCM_DTR : 0) |
1295 ((ChanStatus & CD_ACT) ? TIOCM_CAR : 0) |
1296 (sGetChanRI(&info->channel) ? TIOCM_RNG : 0) |
1297 ((ChanStatus & DSR_ACT) ? TIOCM_DSR : 0) |
1298 ((ChanStatus & CTS_ACT) ? TIOCM_CTS : 0);
1304 * Sets the modem control lines
1306 static int rp_tiocmset(struct tty_struct *tty, struct file *file,
1307 unsigned int set, unsigned int clear)
1309 struct r_port *info = (struct r_port *)tty->driver_data;
1311 if (set & TIOCM_RTS)
1312 info->channel.TxControl[3] |= SET_RTS;
1313 if (set & TIOCM_DTR)
1314 info->channel.TxControl[3] |= SET_DTR;
1315 if (clear & TIOCM_RTS)
1316 info->channel.TxControl[3] &= ~SET_RTS;
1317 if (clear & TIOCM_DTR)
1318 info->channel.TxControl[3] &= ~SET_DTR;
1320 sOutDW(info->channel.IndexAddr, *(DWord_t *) & (info->channel.TxControl[0]));
1324 static int get_config(struct r_port *info, struct rocket_config __user *retinfo)
1326 struct rocket_config tmp;
1330 memset(&tmp, 0, sizeof (tmp));
1331 tmp.line = info->line;
1332 tmp.flags = info->flags;
1333 tmp.close_delay = info->close_delay;
1334 tmp.closing_wait = info->closing_wait;
1335 tmp.port = rcktpt_io_addr[(info->line >> 5) & 3];
1337 if (copy_to_user(retinfo, &tmp, sizeof (*retinfo)))
1342 static int set_config(struct r_port *info, struct rocket_config __user *new_info)
1344 struct rocket_config new_serial;
1346 if (copy_from_user(&new_serial, new_info, sizeof (new_serial)))
1349 if (!capable(CAP_SYS_ADMIN))
1351 if ((new_serial.flags & ~ROCKET_USR_MASK) != (info->flags & ~ROCKET_USR_MASK))
1353 info->flags = ((info->flags & ~ROCKET_USR_MASK) | (new_serial.flags & ROCKET_USR_MASK));
1354 configure_r_port(info, NULL);
1358 info->flags = ((info->flags & ~ROCKET_FLAGS) | (new_serial.flags & ROCKET_FLAGS));
1359 info->close_delay = new_serial.close_delay;
1360 info->closing_wait = new_serial.closing_wait;
1362 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_HI)
1363 info->tty->alt_speed = 57600;
1364 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_VHI)
1365 info->tty->alt_speed = 115200;
1366 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_SHI)
1367 info->tty->alt_speed = 230400;
1368 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_WARP)
1369 info->tty->alt_speed = 460800;
1371 configure_r_port(info, NULL);
1376 * This function fills in a rocket_ports struct with information
1377 * about what boards/ports are in the system. This info is passed
1378 * to user space. See setrocket.c where the info is used to create
1379 * the /dev/ttyRx ports.
1381 static int get_ports(struct r_port *info, struct rocket_ports __user *retports)
1383 struct rocket_ports tmp;
1388 memset(&tmp, 0, sizeof (tmp));
1389 tmp.tty_major = rocket_driver->major;
1391 for (board = 0; board < 4; board++) {
1392 tmp.rocketModel[board].model = rocketModel[board].model;
1393 strcpy(tmp.rocketModel[board].modelString, rocketModel[board].modelString);
1394 tmp.rocketModel[board].numPorts = rocketModel[board].numPorts;
1395 tmp.rocketModel[board].loadrm2 = rocketModel[board].loadrm2;
1396 tmp.rocketModel[board].startingPortNumber = rocketModel[board].startingPortNumber;
1398 if (copy_to_user(retports, &tmp, sizeof (*retports)))
1403 static int reset_rm2(struct r_port *info, void __user *arg)
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;
1438 if (cmd != RCKP_GET_PORTS && rocket_paranoia_check(info, "rp_ioctl"))
1442 case RCKP_GET_STRUCT:
1443 if (copy_to_user(argp, info, sizeof (struct r_port)))
1446 case RCKP_GET_CONFIG:
1447 return get_config(info, argp);
1448 case RCKP_SET_CONFIG:
1449 return set_config(info, argp);
1450 case RCKP_GET_PORTS:
1451 return get_ports(info, argp);
1452 case RCKP_RESET_RM2:
1453 return reset_rm2(info, argp);
1454 case RCKP_GET_VERSION:
1455 return get_version(info, argp);
1457 return -ENOIOCTLCMD;
1462 static void rp_send_xchar(struct tty_struct *tty, char ch)
1464 struct r_port *info = (struct r_port *) tty->driver_data;
1467 if (rocket_paranoia_check(info, "rp_send_xchar"))
1470 cp = &info->channel;
1472 sWriteTxPrioByte(cp, ch);
1474 sWriteTxByte(sGetTxRxDataIO(cp), ch);
1477 static void rp_throttle(struct tty_struct *tty)
1479 struct r_port *info = (struct r_port *) tty->driver_data;
1482 #ifdef ROCKET_DEBUG_THROTTLE
1483 printk(KERN_INFO "throttle %s: %d....\n", tty->name,
1484 tty->ldisc.chars_in_buffer(tty));
1487 if (rocket_paranoia_check(info, "rp_throttle"))
1490 cp = &info->channel;
1492 rp_send_xchar(tty, STOP_CHAR(tty));
1494 sClrRTS(&info->channel);
1497 static void rp_unthrottle(struct tty_struct *tty)
1499 struct r_port *info = (struct r_port *) tty->driver_data;
1501 #ifdef ROCKET_DEBUG_THROTTLE
1502 printk(KERN_INFO "unthrottle %s: %d....\n", tty->name,
1503 tty->ldisc.chars_in_buffer(tty));
1506 if (rocket_paranoia_check(info, "rp_throttle"))
1509 cp = &info->channel;
1511 rp_send_xchar(tty, START_CHAR(tty));
1513 sSetRTS(&info->channel);
1517 * ------------------------------------------------------------
1518 * rp_stop() and rp_start()
1520 * This routines are called before setting or resetting tty->stopped.
1521 * They enable or disable transmitter interrupts, as necessary.
1522 * ------------------------------------------------------------
1524 static void rp_stop(struct tty_struct *tty)
1526 struct r_port *info = (struct r_port *) tty->driver_data;
1528 #ifdef ROCKET_DEBUG_FLOW
1529 printk(KERN_INFO "stop %s: %d %d....\n", tty->name,
1530 info->xmit_cnt, info->xmit_fifo_room);
1533 if (rocket_paranoia_check(info, "rp_stop"))
1536 if (sGetTxCnt(&info->channel))
1537 sDisTransmit(&info->channel);
1540 static void rp_start(struct tty_struct *tty)
1542 struct r_port *info = (struct r_port *) tty->driver_data;
1544 #ifdef ROCKET_DEBUG_FLOW
1545 printk(KERN_INFO "start %s: %d %d....\n", tty->name,
1546 info->xmit_cnt, info->xmit_fifo_room);
1549 if (rocket_paranoia_check(info, "rp_stop"))
1552 sEnTransmit(&info->channel);
1553 set_bit((info->aiop * 8) + info->chan,
1554 (void *) &xmit_flags[info->board]);
1558 * rp_wait_until_sent() --- wait until the transmitter is empty
1560 static void rp_wait_until_sent(struct tty_struct *tty, int timeout)
1562 struct r_port *info = (struct r_port *) tty->driver_data;
1564 unsigned long orig_jiffies;
1565 int check_time, exit_time;
1568 if (rocket_paranoia_check(info, "rp_wait_until_sent"))
1571 cp = &info->channel;
1573 orig_jiffies = jiffies;
1574 #ifdef ROCKET_DEBUG_WAIT_UNTIL_SENT
1575 printk(KERN_INFO "In RP_wait_until_sent(%d) (jiff=%lu)...", timeout,
1577 printk(KERN_INFO "cps=%d...", info->cps);
1580 txcnt = sGetTxCnt(cp);
1582 if (sGetChanStatusLo(cp) & TXSHRMT)
1584 check_time = (HZ / info->cps) / 5;
1586 check_time = HZ * txcnt / info->cps;
1589 exit_time = orig_jiffies + timeout - jiffies;
1592 if (exit_time < check_time)
1593 check_time = exit_time;
1595 if (check_time == 0)
1597 #ifdef ROCKET_DEBUG_WAIT_UNTIL_SENT
1598 printk(KERN_INFO "txcnt = %d (jiff=%lu,check=%d)...", txcnt, jiffies, check_time);
1600 msleep_interruptible(jiffies_to_msecs(check_time));
1601 if (signal_pending(current))
1604 current->state = TASK_RUNNING;
1605 #ifdef ROCKET_DEBUG_WAIT_UNTIL_SENT
1606 printk(KERN_INFO "txcnt = %d (jiff=%lu)...done\n", txcnt, jiffies);
1611 * rp_hangup() --- called by tty_hangup() when a hangup is signaled.
1613 static void rp_hangup(struct tty_struct *tty)
1616 struct r_port *info = (struct r_port *) tty->driver_data;
1618 if (rocket_paranoia_check(info, "rp_hangup"))
1621 #if (defined(ROCKET_DEBUG_OPEN) || defined(ROCKET_DEBUG_HANGUP))
1622 printk(KERN_INFO "rp_hangup of ttyR%d...", info->line);
1624 rp_flush_buffer(tty);
1625 if (info->flags & ROCKET_CLOSING)
1628 atomic_dec(&rp_num_ports_open);
1629 clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
1632 info->flags &= ~ROCKET_NORMAL_ACTIVE;
1635 cp = &info->channel;
1638 sDisInterrupts(cp, (TXINT_EN | MCINT_EN | RXINT_EN | SRCINT_EN | CHANINT_EN));
1640 sDisTxSoftFlowCtl(cp);
1642 info->flags &= ~ROCKET_INITIALIZED;
1644 wake_up_interruptible(&info->open_wait);
1648 * Exception handler - write char routine. The RocketPort driver uses a
1649 * double-buffering strategy, with the twist that if the in-memory CPU
1650 * buffer is empty, and there's space in the transmit FIFO, the
1651 * writing routines will write directly to transmit FIFO.
1652 * Write buffer and counters protected by spinlocks
1654 static void rp_put_char(struct tty_struct *tty, unsigned char ch)
1656 struct r_port *info = (struct r_port *) tty->driver_data;
1658 unsigned long flags;
1660 if (rocket_paranoia_check(info, "rp_put_char"))
1663 /* Grab the port write semaphore, locking out other processes that try to write to this port */
1664 down(&info->write_sem);
1666 #ifdef ROCKET_DEBUG_WRITE
1667 printk(KERN_INFO "rp_put_char %c...", ch);
1670 spin_lock_irqsave(&info->slock, flags);
1671 cp = &info->channel;
1673 if (!tty->stopped && !tty->hw_stopped && info->xmit_fifo_room == 0)
1674 info->xmit_fifo_room = TXFIFO_SIZE - sGetTxCnt(cp);
1676 if (tty->stopped || tty->hw_stopped || info->xmit_fifo_room == 0 || info->xmit_cnt != 0) {
1677 info->xmit_buf[info->xmit_head++] = ch;
1678 info->xmit_head &= XMIT_BUF_SIZE - 1;
1680 set_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
1682 sOutB(sGetTxRxDataIO(cp), ch);
1683 info->xmit_fifo_room--;
1685 spin_unlock_irqrestore(&info->slock, flags);
1686 up(&info->write_sem);
1690 * Exception handler - write routine, called when user app writes to the device.
1691 * A per port write semaphore is used to protect from another process writing to
1692 * this port at the same time. This other process could be running on the other CPU
1693 * or get control of the CPU if the copy_from_user() blocks due to a page fault (swapped out).
1694 * Spinlocks protect the info xmit members.
1696 static int rp_write(struct tty_struct *tty,
1697 const unsigned char *buf, int count)
1699 struct r_port *info = (struct r_port *) tty->driver_data;
1701 const unsigned char *b;
1703 unsigned long flags;
1705 if (count <= 0 || rocket_paranoia_check(info, "rp_write"))
1708 down_interruptible(&info->write_sem);
1710 #ifdef ROCKET_DEBUG_WRITE
1711 printk(KERN_INFO "rp_write %d chars...", count);
1713 cp = &info->channel;
1715 if (!tty->stopped && !tty->hw_stopped && info->xmit_fifo_room < count)
1716 info->xmit_fifo_room = TXFIFO_SIZE - sGetTxCnt(cp);
1719 * If the write queue for the port is empty, and there is FIFO space, stuff bytes
1720 * into FIFO. Use the write queue for temp storage.
1722 if (!tty->stopped && !tty->hw_stopped && info->xmit_cnt == 0 && info->xmit_fifo_room > 0) {
1723 c = min(count, info->xmit_fifo_room);
1726 /* Push data into FIFO, 2 bytes at a time */
1727 sOutStrW(sGetTxRxDataIO(cp), (unsigned short *) b, c / 2);
1729 /* If there is a byte remaining, write it */
1731 sOutB(sGetTxRxDataIO(cp), b[c - 1]);
1737 spin_lock_irqsave(&info->slock, flags);
1738 info->xmit_fifo_room -= c;
1739 spin_unlock_irqrestore(&info->slock, flags);
1742 /* If count is zero, we wrote it all and are done */
1746 /* Write remaining data into the port's xmit_buf */
1748 if (info->tty == 0) /* Seemingly obligatory check... */
1751 c = min(count, min(XMIT_BUF_SIZE - info->xmit_cnt - 1, XMIT_BUF_SIZE - info->xmit_head));
1756 memcpy(info->xmit_buf + info->xmit_head, b, c);
1758 spin_lock_irqsave(&info->slock, flags);
1760 (info->xmit_head + c) & (XMIT_BUF_SIZE - 1);
1761 info->xmit_cnt += c;
1762 spin_unlock_irqrestore(&info->slock, flags);
1769 if ((retval > 0) && !tty->stopped && !tty->hw_stopped)
1770 set_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
1773 if (info->xmit_cnt < WAKEUP_CHARS) {
1775 wake_up_interruptible(&tty->write_wait);
1776 #ifdef ROCKETPORT_HAVE_POLL_WAIT
1777 wake_up_interruptible(&tty->poll_wait);
1780 up(&info->write_sem);
1785 * Return the number of characters that can be sent. We estimate
1786 * only using the in-memory transmit buffer only, and ignore the
1787 * potential space in the transmit FIFO.
1789 static int rp_write_room(struct tty_struct *tty)
1791 struct r_port *info = (struct r_port *) tty->driver_data;
1794 if (rocket_paranoia_check(info, "rp_write_room"))
1797 ret = XMIT_BUF_SIZE - info->xmit_cnt - 1;
1800 #ifdef ROCKET_DEBUG_WRITE
1801 printk(KERN_INFO "rp_write_room returns %d...", ret);
1807 * Return the number of characters in the buffer. Again, this only
1808 * counts those characters in the in-memory transmit buffer.
1810 static int rp_chars_in_buffer(struct tty_struct *tty)
1812 struct r_port *info = (struct r_port *) tty->driver_data;
1815 if (rocket_paranoia_check(info, "rp_chars_in_buffer"))
1818 cp = &info->channel;
1820 #ifdef ROCKET_DEBUG_WRITE
1821 printk(KERN_INFO "rp_chars_in_buffer returns %d...", info->xmit_cnt);
1823 return info->xmit_cnt;
1827 * Flushes the TX fifo for a port, deletes data in the xmit_buf stored in the
1828 * r_port struct for the port. Note that spinlock are used to protect info members,
1829 * do not call this function if the spinlock is already held.
1831 static void rp_flush_buffer(struct tty_struct *tty)
1833 struct r_port *info = (struct r_port *) tty->driver_data;
1835 unsigned long flags;
1837 if (rocket_paranoia_check(info, "rp_flush_buffer"))
1840 spin_lock_irqsave(&info->slock, flags);
1841 info->xmit_cnt = info->xmit_head = info->xmit_tail = 0;
1842 spin_unlock_irqrestore(&info->slock, flags);
1844 wake_up_interruptible(&tty->write_wait);
1845 #ifdef ROCKETPORT_HAVE_POLL_WAIT
1846 wake_up_interruptible(&tty->poll_wait);
1850 cp = &info->channel;
1857 * Called when a PCI card is found. Retrieves and stores model information,
1858 * init's aiopic and serial port hardware.
1859 * Inputs: i is the board number (0-n)
1861 static __init int register_PCI(int i, struct pci_dev *dev)
1863 int num_aiops, aiop, max_num_aiops, num_chan, chan;
1864 unsigned int aiopio[MAX_AIOPS_PER_BOARD];
1865 char *str, *board_type;
1869 int altChanRingIndicator = 0;
1870 int ports_per_aiop = 8;
1872 unsigned int class_rev;
1873 WordIO_t ConfigIO = 0;
1874 ByteIO_t UPCIRingInd = 0;
1876 if (!dev || pci_enable_device(dev))
1879 rcktpt_io_addr[i] = pci_resource_start(dev, 0);
1880 ret = pci_read_config_dword(dev, PCI_CLASS_REVISION, &class_rev);
1883 printk(KERN_INFO " Error during register_PCI(), unable to read config dword \n");
1887 rcktpt_type[i] = ROCKET_TYPE_NORMAL;
1888 rocketModel[i].loadrm2 = 0;
1889 rocketModel[i].startingPortNumber = nextLineNumber;
1891 /* Depending on the model, set up some config variables */
1892 switch (dev->device) {
1893 case PCI_DEVICE_ID_RP4QUAD:
1897 rocketModel[i].model = MODEL_RP4QUAD;
1898 strcpy(rocketModel[i].modelString, "RocketPort 4 port w/quad cable");
1899 rocketModel[i].numPorts = 4;
1901 case PCI_DEVICE_ID_RP8OCTA:
1904 rocketModel[i].model = MODEL_RP8OCTA;
1905 strcpy(rocketModel[i].modelString, "RocketPort 8 port w/octa cable");
1906 rocketModel[i].numPorts = 8;
1908 case PCI_DEVICE_ID_URP8OCTA:
1911 rocketModel[i].model = MODEL_UPCI_RP8OCTA;
1912 strcpy(rocketModel[i].modelString, "RocketPort UPCI 8 port w/octa cable");
1913 rocketModel[i].numPorts = 8;
1915 case PCI_DEVICE_ID_RP8INTF:
1918 rocketModel[i].model = MODEL_RP8INTF;
1919 strcpy(rocketModel[i].modelString, "RocketPort 8 port w/external I/F");
1920 rocketModel[i].numPorts = 8;
1922 case PCI_DEVICE_ID_URP8INTF:
1925 rocketModel[i].model = MODEL_UPCI_RP8INTF;
1926 strcpy(rocketModel[i].modelString, "RocketPort UPCI 8 port w/external I/F");
1927 rocketModel[i].numPorts = 8;
1929 case PCI_DEVICE_ID_RP8J:
1932 rocketModel[i].model = MODEL_RP8J;
1933 strcpy(rocketModel[i].modelString, "RocketPort 8 port w/RJ11 connectors");
1934 rocketModel[i].numPorts = 8;
1936 case PCI_DEVICE_ID_RP4J:
1940 rocketModel[i].model = MODEL_RP4J;
1941 strcpy(rocketModel[i].modelString, "RocketPort 4 port w/RJ45 connectors");
1942 rocketModel[i].numPorts = 4;
1944 case PCI_DEVICE_ID_RP8SNI:
1945 str = "8 (DB78 Custom)";
1947 rocketModel[i].model = MODEL_RP8SNI;
1948 strcpy(rocketModel[i].modelString, "RocketPort 8 port w/ custom DB78");
1949 rocketModel[i].numPorts = 8;
1951 case PCI_DEVICE_ID_RP16SNI:
1952 str = "16 (DB78 Custom)";
1954 rocketModel[i].model = MODEL_RP16SNI;
1955 strcpy(rocketModel[i].modelString, "RocketPort 16 port w/ custom DB78");
1956 rocketModel[i].numPorts = 16;
1958 case PCI_DEVICE_ID_RP16INTF:
1961 rocketModel[i].model = MODEL_RP16INTF;
1962 strcpy(rocketModel[i].modelString, "RocketPort 16 port w/external I/F");
1963 rocketModel[i].numPorts = 16;
1965 case PCI_DEVICE_ID_URP16INTF:
1968 rocketModel[i].model = MODEL_UPCI_RP16INTF;
1969 strcpy(rocketModel[i].modelString, "RocketPort UPCI 16 port w/external I/F");
1970 rocketModel[i].numPorts = 16;
1972 case PCI_DEVICE_ID_CRP16INTF:
1975 rocketModel[i].model = MODEL_CPCI_RP16INTF;
1976 strcpy(rocketModel[i].modelString, "RocketPort Compact PCI 16 port w/external I/F");
1977 rocketModel[i].numPorts = 16;
1979 case PCI_DEVICE_ID_RP32INTF:
1982 rocketModel[i].model = MODEL_RP32INTF;
1983 strcpy(rocketModel[i].modelString, "RocketPort 32 port w/external I/F");
1984 rocketModel[i].numPorts = 32;
1986 case PCI_DEVICE_ID_URP32INTF:
1989 rocketModel[i].model = MODEL_UPCI_RP32INTF;
1990 strcpy(rocketModel[i].modelString, "RocketPort UPCI 32 port w/external I/F");
1991 rocketModel[i].numPorts = 32;
1993 case PCI_DEVICE_ID_RPP4:
1994 str = "Plus Quadcable";
1997 altChanRingIndicator++;
1999 rocketModel[i].model = MODEL_RPP4;
2000 strcpy(rocketModel[i].modelString, "RocketPort Plus 4 port");
2001 rocketModel[i].numPorts = 4;
2003 case PCI_DEVICE_ID_RPP8:
2004 str = "Plus Octacable";
2007 altChanRingIndicator++;
2009 rocketModel[i].model = MODEL_RPP8;
2010 strcpy(rocketModel[i].modelString, "RocketPort Plus 8 port");
2011 rocketModel[i].numPorts = 8;
2013 case PCI_DEVICE_ID_RP2_232:
2014 str = "Plus 2 (RS-232)";
2017 altChanRingIndicator++;
2019 rocketModel[i].model = MODEL_RP2_232;
2020 strcpy(rocketModel[i].modelString, "RocketPort Plus 2 port RS232");
2021 rocketModel[i].numPorts = 2;
2023 case PCI_DEVICE_ID_RP2_422:
2024 str = "Plus 2 (RS-422)";
2027 altChanRingIndicator++;
2029 rocketModel[i].model = MODEL_RP2_422;
2030 strcpy(rocketModel[i].modelString, "RocketPort Plus 2 port RS422");
2031 rocketModel[i].numPorts = 2;
2033 case PCI_DEVICE_ID_RP6M:
2039 /* If class_rev is 1, the rocketmodem flash must be loaded. If it is 2 it is a "socketed" version. */
2040 if ((class_rev & 0xFF) == 1) {
2041 rcktpt_type[i] = ROCKET_TYPE_MODEMII;
2042 rocketModel[i].loadrm2 = 1;
2044 rcktpt_type[i] = ROCKET_TYPE_MODEM;
2047 rocketModel[i].model = MODEL_RP6M;
2048 strcpy(rocketModel[i].modelString, "RocketModem 6 port");
2049 rocketModel[i].numPorts = 6;
2051 case PCI_DEVICE_ID_RP4M:
2055 if ((class_rev & 0xFF) == 1) {
2056 rcktpt_type[i] = ROCKET_TYPE_MODEMII;
2057 rocketModel[i].loadrm2 = 1;
2059 rcktpt_type[i] = ROCKET_TYPE_MODEM;
2062 rocketModel[i].model = MODEL_RP4M;
2063 strcpy(rocketModel[i].modelString, "RocketModem 4 port");
2064 rocketModel[i].numPorts = 4;
2067 str = "(unknown/unsupported)";
2073 * Check for UPCI boards.
2076 switch (dev->device) {
2077 case PCI_DEVICE_ID_URP32INTF:
2078 case PCI_DEVICE_ID_URP8INTF:
2079 case PCI_DEVICE_ID_URP16INTF:
2080 case PCI_DEVICE_ID_CRP16INTF:
2081 case PCI_DEVICE_ID_URP8OCTA:
2082 rcktpt_io_addr[i] = pci_resource_start(dev, 2);
2083 ConfigIO = pci_resource_start(dev, 1);
2084 if (dev->device == PCI_DEVICE_ID_URP8OCTA) {
2085 UPCIRingInd = rcktpt_io_addr[i] + _PCI_9030_RING_IND;
2088 * Check for octa or quad cable.
2091 (sInW(ConfigIO + _PCI_9030_GPIO_CTRL) &
2092 PCI_GPIO_CTRL_8PORT)) {
2095 rocketModel[i].numPorts = 4;
2099 case PCI_DEVICE_ID_UPCI_RM3_8PORT:
2102 rocketModel[i].model = MODEL_UPCI_RM3_8PORT;
2103 strcpy(rocketModel[i].modelString, "RocketModem III 8 port");
2104 rocketModel[i].numPorts = 8;
2105 rcktpt_io_addr[i] = pci_resource_start(dev, 2);
2106 UPCIRingInd = rcktpt_io_addr[i] + _PCI_9030_RING_IND;
2107 ConfigIO = pci_resource_start(dev, 1);
2108 rcktpt_type[i] = ROCKET_TYPE_MODEMIII;
2110 case PCI_DEVICE_ID_UPCI_RM3_4PORT:
2113 rocketModel[i].model = MODEL_UPCI_RM3_4PORT;
2114 strcpy(rocketModel[i].modelString, "RocketModem III 4 port");
2115 rocketModel[i].numPorts = 4;
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;
2125 switch (rcktpt_type[i]) {
2126 case ROCKET_TYPE_MODEM:
2127 board_type = "RocketModem";
2129 case ROCKET_TYPE_MODEMII:
2130 board_type = "RocketModem II";
2132 case ROCKET_TYPE_MODEMIII:
2133 board_type = "RocketModem III";
2136 board_type = "RocketPort";
2141 sClockPrescale = 0x12; /* mod 2 (divide by 3) */
2142 rp_baud_base[i] = 921600;
2145 * If support_low_speed is set, use the slow clock
2146 * prescale, which supports 50 bps
2148 if (support_low_speed) {
2149 /* mod 9 (divide by 10) prescale */
2150 sClockPrescale = 0x19;
2151 rp_baud_base[i] = 230400;
2153 /* mod 4 (devide by 5) prescale */
2154 sClockPrescale = 0x14;
2155 rp_baud_base[i] = 460800;
2159 for (aiop = 0; aiop < max_num_aiops; aiop++)
2160 aiopio[aiop] = rcktpt_io_addr[i] + (aiop * 0x40);
2161 ctlp = sCtlNumToCtlPtr(i);
2162 num_aiops = sPCIInitController(ctlp, i, aiopio, max_num_aiops, ConfigIO, 0, FREQ_DIS, 0, altChanRingIndicator, UPCIRingInd);
2163 for (aiop = 0; aiop < max_num_aiops; aiop++)
2164 ctlp->AiopNumChan[aiop] = ports_per_aiop;
2166 printk("Comtrol PCI controller #%d ID 0x%x found in bus:slot:fn %s at address %04lx, "
2167 "%d AIOP(s) (%s)\n", i, dev->device, pci_name(dev),
2168 rcktpt_io_addr[i], num_aiops, rocketModel[i].modelString);
2169 printk(KERN_INFO "Installing %s, creating /dev/ttyR%d - %ld\n",
2170 rocketModel[i].modelString,
2171 rocketModel[i].startingPortNumber,
2172 rocketModel[i].startingPortNumber +
2173 rocketModel[i].numPorts - 1);
2175 if (num_aiops <= 0) {
2176 rcktpt_io_addr[i] = 0;
2181 /* Reset the AIOPIC, init the serial ports */
2182 for (aiop = 0; aiop < num_aiops; aiop++) {
2183 sResetAiopByNum(ctlp, aiop);
2184 num_chan = ports_per_aiop;
2185 for (chan = 0; chan < num_chan; chan++)
2186 init_r_port(i, aiop, chan, dev);
2189 /* Rocket modems must be reset */
2190 if ((rcktpt_type[i] == ROCKET_TYPE_MODEM) ||
2191 (rcktpt_type[i] == ROCKET_TYPE_MODEMII) ||
2192 (rcktpt_type[i] == ROCKET_TYPE_MODEMIII)) {
2193 num_chan = ports_per_aiop;
2194 for (chan = 0; chan < num_chan; chan++)
2195 sPCIModemReset(ctlp, chan, 1);
2197 for (chan = 0; chan < num_chan; chan++)
2198 sPCIModemReset(ctlp, chan, 0);
2200 rmSpeakerReset(ctlp, rocketModel[i].model);
2206 * Probes for PCI cards, inits them if found
2207 * Input: board_found = number of ISA boards already found, or the
2208 * starting board number
2209 * Returns: Number of PCI boards found
2211 static int __init init_PCI(int boards_found)
2213 struct pci_dev *dev = NULL;
2216 /* Work through the PCI device list, pulling out ours */
2217 while ((dev = pci_find_device(PCI_VENDOR_ID_RP, PCI_ANY_ID, dev))) {
2218 if (register_PCI(count + boards_found, dev))
2224 #endif /* CONFIG_PCI */
2227 * Probes for ISA cards
2228 * Input: i = the board number to look for
2229 * Returns: 1 if board found, 0 else
2231 static int __init init_ISA(int i)
2233 int num_aiops, num_chan = 0, total_num_chan = 0;
2235 unsigned int aiopio[MAX_AIOPS_PER_BOARD];
2239 /* If io_addr is zero, no board configured */
2240 if (rcktpt_io_addr[i] == 0)
2243 /* Reserve the IO region */
2244 if (!request_region(rcktpt_io_addr[i], 64, "Comtrol RocketPort")) {
2245 printk(KERN_INFO "Unable to reserve IO region for configured ISA RocketPort at address 0x%lx, board not installed...\n", rcktpt_io_addr[i]);
2246 rcktpt_io_addr[i] = 0;
2250 ctlp = sCtlNumToCtlPtr(i);
2252 ctlp->boardType = rcktpt_type[i];
2254 switch (rcktpt_type[i]) {
2255 case ROCKET_TYPE_PC104:
2256 type_string = "(PC104)";
2258 case ROCKET_TYPE_MODEM:
2259 type_string = "(RocketModem)";
2261 case ROCKET_TYPE_MODEMII:
2262 type_string = "(RocketModem II)";
2270 * If support_low_speed is set, use the slow clock prescale,
2271 * which supports 50 bps
2273 if (support_low_speed) {
2274 sClockPrescale = 0x19; /* mod 9 (divide by 10) prescale */
2275 rp_baud_base[i] = 230400;
2277 sClockPrescale = 0x14; /* mod 4 (devide by 5) prescale */
2278 rp_baud_base[i] = 460800;
2281 for (aiop = 0; aiop < MAX_AIOPS_PER_BOARD; aiop++)
2282 aiopio[aiop] = rcktpt_io_addr[i] + (aiop * 0x400);
2284 num_aiops = sInitController(ctlp, i, controller + (i * 0x400), aiopio, MAX_AIOPS_PER_BOARD, 0, FREQ_DIS, 0);
2286 if (ctlp->boardType == ROCKET_TYPE_PC104) {
2287 sEnAiop(ctlp, 2); /* only one AIOPIC, but these */
2288 sEnAiop(ctlp, 3); /* CSels used for other stuff */
2291 /* If something went wrong initing the AIOP's release the ISA IO memory */
2292 if (num_aiops <= 0) {
2293 release_region(rcktpt_io_addr[i], 64);
2294 rcktpt_io_addr[i] = 0;
2298 rocketModel[i].startingPortNumber = nextLineNumber;
2300 for (aiop = 0; aiop < num_aiops; aiop++) {
2301 sResetAiopByNum(ctlp, aiop);
2302 sEnAiop(ctlp, aiop);
2303 num_chan = sGetAiopNumChan(ctlp, aiop);
2304 total_num_chan += num_chan;
2305 for (chan = 0; chan < num_chan; chan++)
2306 init_r_port(i, aiop, chan, NULL);
2309 if ((rcktpt_type[i] == ROCKET_TYPE_MODEM) || (rcktpt_type[i] == ROCKET_TYPE_MODEMII)) {
2310 num_chan = sGetAiopNumChan(ctlp, 0);
2311 total_num_chan = num_chan;
2312 for (chan = 0; chan < num_chan; chan++)
2313 sModemReset(ctlp, chan, 1);
2315 for (chan = 0; chan < num_chan; chan++)
2316 sModemReset(ctlp, chan, 0);
2318 strcpy(rocketModel[i].modelString, "RocketModem ISA");
2320 strcpy(rocketModel[i].modelString, "RocketPort ISA");
2322 rocketModel[i].numPorts = total_num_chan;
2323 rocketModel[i].model = MODEL_ISA;
2325 printk(KERN_INFO "RocketPort ISA card #%d found at 0x%lx - %d AIOPs %s\n",
2326 i, rcktpt_io_addr[i], num_aiops, type_string);
2328 printk(KERN_INFO "Installing %s, creating /dev/ttyR%d - %ld\n",
2329 rocketModel[i].modelString,
2330 rocketModel[i].startingPortNumber,
2331 rocketModel[i].startingPortNumber +
2332 rocketModel[i].numPorts - 1);
2337 static struct tty_operations rocket_ops = {
2341 .put_char = rp_put_char,
2342 .write_room = rp_write_room,
2343 .chars_in_buffer = rp_chars_in_buffer,
2344 .flush_buffer = rp_flush_buffer,
2346 .throttle = rp_throttle,
2347 .unthrottle = rp_unthrottle,
2348 .set_termios = rp_set_termios,
2351 .hangup = rp_hangup,
2352 .break_ctl = rp_break,
2353 .send_xchar = rp_send_xchar,
2354 .wait_until_sent = rp_wait_until_sent,
2355 .tiocmget = rp_tiocmget,
2356 .tiocmset = rp_tiocmset,
2360 * The module "startup" routine; it's run when the module is loaded.
2362 static int __init rp_init(void)
2364 int retval, pci_boards_found, isa_boards_found, i;
2366 printk(KERN_INFO "RocketPort device driver module, version %s, %s\n",
2367 ROCKET_VERSION, ROCKET_DATE);
2369 rocket_driver = alloc_tty_driver(MAX_RP_PORTS);
2374 * Set up the timer channel.
2376 init_timer(&rocket_timer);
2377 rocket_timer.function = rp_do_poll;
2380 * Initialize the array of pointers to our own internal state
2383 memset(rp_table, 0, sizeof (rp_table));
2384 memset(xmit_flags, 0, sizeof (xmit_flags));
2386 for (i = 0; i < MAX_RP_PORTS; i++)
2389 memset(rocketModel, 0, sizeof (rocketModel));
2392 * If board 1 is non-zero, there is at least one ISA configured. If controller is
2393 * zero, use the default controller IO address of board1 + 0x40.
2396 if (controller == 0)
2397 controller = board1 + 0x40;
2399 controller = 0; /* Used as a flag, meaning no ISA boards */
2402 /* If an ISA card is configured, reserve the 4 byte IO space for the Mudbac controller */
2403 if (controller && (!request_region(controller, 4, "Comtrol RocketPort"))) {
2404 printk(KERN_INFO "Unable to reserve IO region for first configured ISA RocketPort controller 0x%lx. Driver exiting \n", controller);
2408 /* Store ISA variable retrieved from command line or .conf file. */
2409 rcktpt_io_addr[0] = board1;
2410 rcktpt_io_addr[1] = board2;
2411 rcktpt_io_addr[2] = board3;
2412 rcktpt_io_addr[3] = board4;
2414 rcktpt_type[0] = modem1 ? ROCKET_TYPE_MODEM : ROCKET_TYPE_NORMAL;
2415 rcktpt_type[0] = pc104_1[0] ? ROCKET_TYPE_PC104 : rcktpt_type[0];
2416 rcktpt_type[1] = modem2 ? ROCKET_TYPE_MODEM : ROCKET_TYPE_NORMAL;
2417 rcktpt_type[1] = pc104_2[0] ? ROCKET_TYPE_PC104 : rcktpt_type[1];
2418 rcktpt_type[2] = modem3 ? ROCKET_TYPE_MODEM : ROCKET_TYPE_NORMAL;
2419 rcktpt_type[2] = pc104_3[0] ? ROCKET_TYPE_PC104 : rcktpt_type[2];
2420 rcktpt_type[3] = modem4 ? ROCKET_TYPE_MODEM : ROCKET_TYPE_NORMAL;
2421 rcktpt_type[3] = pc104_4[0] ? ROCKET_TYPE_PC104 : rcktpt_type[3];
2424 * Set up the tty driver structure and then register this
2425 * driver with the tty layer.
2428 rocket_driver->owner = THIS_MODULE;
2429 rocket_driver->flags = TTY_DRIVER_NO_DEVFS;
2430 rocket_driver->devfs_name = "tts/R";
2431 rocket_driver->name = "ttyR";
2432 rocket_driver->driver_name = "Comtrol RocketPort";
2433 rocket_driver->major = TTY_ROCKET_MAJOR;
2434 rocket_driver->minor_start = 0;
2435 rocket_driver->type = TTY_DRIVER_TYPE_SERIAL;
2436 rocket_driver->subtype = SERIAL_TYPE_NORMAL;
2437 rocket_driver->init_termios = tty_std_termios;
2438 rocket_driver->init_termios.c_cflag =
2439 B9600 | CS8 | CREAD | HUPCL | CLOCAL;
2440 #ifdef ROCKET_SOFT_FLOW
2441 rocket_driver->flags |= TTY_DRIVER_REAL_RAW | TTY_DRIVER_NO_DEVFS;
2443 tty_set_operations(rocket_driver, &rocket_ops);
2445 retval = tty_register_driver(rocket_driver);
2447 printk(KERN_INFO "Couldn't install tty RocketPort driver (error %d)\n", -retval);
2448 put_tty_driver(rocket_driver);
2452 #ifdef ROCKET_DEBUG_OPEN
2453 printk(KERN_INFO "RocketPort driver is major %d\n", rocket_driver.major);
2457 * OK, let's probe each of the controllers looking for boards. Any boards found
2458 * will be initialized here.
2460 isa_boards_found = 0;
2461 pci_boards_found = 0;
2463 for (i = 0; i < NUM_BOARDS; i++) {
2469 if (isa_boards_found < NUM_BOARDS)
2470 pci_boards_found = init_PCI(isa_boards_found);
2473 max_board = pci_boards_found + isa_boards_found;
2475 if (max_board == 0) {
2476 printk(KERN_INFO "No rocketport ports found; unloading driver.\n");
2477 del_timer_sync(&rocket_timer);
2478 tty_unregister_driver(rocket_driver);
2479 put_tty_driver(rocket_driver);
2487 static void rp_cleanup_module(void)
2492 del_timer_sync(&rocket_timer);
2494 retval = tty_unregister_driver(rocket_driver);
2496 printk(KERN_INFO "Error %d while trying to unregister "
2497 "rocketport driver\n", -retval);
2498 put_tty_driver(rocket_driver);
2500 for (i = 0; i < MAX_RP_PORTS; i++)
2503 for (i = 0; i < NUM_BOARDS; i++) {
2504 if (rcktpt_io_addr[i] <= 0 || is_PCI[i])
2506 release_region(rcktpt_io_addr[i], 64);
2509 release_region(controller, 4);
2512 /***************************************************************************
2513 Function: sInitController
2514 Purpose: Initialization of controller global registers and controller
2516 Call: sInitController(CtlP,CtlNum,MudbacIO,AiopIOList,AiopIOListSize,
2517 IRQNum,Frequency,PeriodicOnly)
2518 CONTROLLER_T *CtlP; Ptr to controller structure
2519 int CtlNum; Controller number
2520 ByteIO_t MudbacIO; Mudbac base I/O address.
2521 ByteIO_t *AiopIOList; List of I/O addresses for each AIOP.
2522 This list must be in the order the AIOPs will be found on the
2523 controller. Once an AIOP in the list is not found, it is
2524 assumed that there are no more AIOPs on the controller.
2525 int AiopIOListSize; Number of addresses in AiopIOList
2526 int IRQNum; Interrupt Request number. Can be any of the following:
2527 0: Disable global interrupts
2536 Byte_t Frequency: A flag identifying the frequency
2537 of the periodic interrupt, can be any one of the following:
2538 FREQ_DIS - periodic interrupt disabled
2539 FREQ_137HZ - 137 Hertz
2540 FREQ_69HZ - 69 Hertz
2541 FREQ_34HZ - 34 Hertz
2542 FREQ_17HZ - 17 Hertz
2545 If IRQNum is set to 0 the Frequency parameter is
2546 overidden, it is forced to a value of FREQ_DIS.
2547 int PeriodicOnly: 1 if all interrupts except the periodic
2548 interrupt are to be blocked.
2549 0 is both the periodic interrupt and
2550 other channel interrupts are allowed.
2551 If IRQNum is set to 0 the PeriodicOnly parameter is
2552 overidden, it is forced to a value of 0.
2553 Return: int: Number of AIOPs on the controller, or CTLID_NULL if controller
2554 initialization failed.
2557 If periodic interrupts are to be disabled but AIOP interrupts
2558 are allowed, set Frequency to FREQ_DIS and PeriodicOnly to 0.
2560 If interrupts are to be completely disabled set IRQNum to 0.
2562 Setting Frequency to FREQ_DIS and PeriodicOnly to 1 is an
2563 invalid combination.
2565 This function performs initialization of global interrupt modes,
2566 but it does not actually enable global interrupts. To enable
2567 and disable global interrupts use functions sEnGlobalInt() and
2568 sDisGlobalInt(). Enabling of global interrupts is normally not
2569 done until all other initializations are complete.
2571 Even if interrupts are globally enabled, they must also be
2572 individually enabled for each channel that is to generate
2575 Warnings: No range checking on any of the parameters is done.
2577 No context switches are allowed while executing this function.
2579 After this function all AIOPs on the controller are disabled,
2580 they can be enabled with sEnAiop().
2582 static int sInitController(CONTROLLER_T * CtlP, int CtlNum, ByteIO_t MudbacIO,
2583 ByteIO_t * AiopIOList, int AiopIOListSize,
2584 int IRQNum, Byte_t Frequency, int PeriodicOnly)
2590 CtlP->AiopIntrBits = aiop_intr_bits;
2591 CtlP->AltChanRingIndicator = 0;
2592 CtlP->CtlNum = CtlNum;
2593 CtlP->CtlID = CTLID_0001; /* controller release 1 */
2594 CtlP->BusType = isISA;
2595 CtlP->MBaseIO = MudbacIO;
2596 CtlP->MReg1IO = MudbacIO + 1;
2597 CtlP->MReg2IO = MudbacIO + 2;
2598 CtlP->MReg3IO = MudbacIO + 3;
2600 CtlP->MReg2 = 0; /* interrupt disable */
2601 CtlP->MReg3 = 0; /* no periodic interrupts */
2603 if (sIRQMap[IRQNum] == 0) { /* interrupts globally disabled */
2604 CtlP->MReg2 = 0; /* interrupt disable */
2605 CtlP->MReg3 = 0; /* no periodic interrupts */
2607 CtlP->MReg2 = sIRQMap[IRQNum]; /* set IRQ number */
2608 CtlP->MReg3 = Frequency; /* set frequency */
2609 if (PeriodicOnly) { /* periodic interrupt only */
2610 CtlP->MReg3 |= PERIODIC_ONLY;
2614 sOutB(CtlP->MReg2IO, CtlP->MReg2);
2615 sOutB(CtlP->MReg3IO, CtlP->MReg3);
2616 sControllerEOI(CtlP); /* clear EOI if warm init */
2619 for (i = done = 0; i < AiopIOListSize; i++) {
2621 CtlP->AiopIO[i] = (WordIO_t) io;
2622 CtlP->AiopIntChanIO[i] = io + _INT_CHAN;
2623 sOutB(CtlP->MReg2IO, CtlP->MReg2 | (i & 0x03)); /* AIOP index */
2624 sOutB(MudbacIO, (Byte_t) (io >> 6)); /* set up AIOP I/O in MUDBAC */
2627 sEnAiop(CtlP, i); /* enable the AIOP */
2628 CtlP->AiopID[i] = sReadAiopID(io); /* read AIOP ID */
2629 if (CtlP->AiopID[i] == AIOPID_NULL) /* if AIOP does not exist */
2630 done = 1; /* done looking for AIOPs */
2632 CtlP->AiopNumChan[i] = sReadAiopNumChan((WordIO_t) io); /* num channels in AIOP */
2633 sOutW((WordIO_t) io + _INDX_ADDR, _CLK_PRE); /* clock prescaler */
2634 sOutB(io + _INDX_DATA, sClockPrescale);
2635 CtlP->NumAiop++; /* bump count of AIOPs */
2637 sDisAiop(CtlP, i); /* disable AIOP */
2640 if (CtlP->NumAiop == 0)
2643 return (CtlP->NumAiop);
2646 /***************************************************************************
2647 Function: sPCIInitController
2648 Purpose: Initialization of controller global registers and controller
2650 Call: sPCIInitController(CtlP,CtlNum,AiopIOList,AiopIOListSize,
2651 IRQNum,Frequency,PeriodicOnly)
2652 CONTROLLER_T *CtlP; Ptr to controller structure
2653 int CtlNum; Controller number
2654 ByteIO_t *AiopIOList; List of I/O addresses for each AIOP.
2655 This list must be in the order the AIOPs will be found on the
2656 controller. Once an AIOP in the list is not found, it is
2657 assumed that there are no more AIOPs on the controller.
2658 int AiopIOListSize; Number of addresses in AiopIOList
2659 int IRQNum; Interrupt Request number. Can be any of the following:
2660 0: Disable global interrupts
2669 Byte_t Frequency: A flag identifying the frequency
2670 of the periodic interrupt, can be any one of the following:
2671 FREQ_DIS - periodic interrupt disabled
2672 FREQ_137HZ - 137 Hertz
2673 FREQ_69HZ - 69 Hertz
2674 FREQ_34HZ - 34 Hertz
2675 FREQ_17HZ - 17 Hertz
2678 If IRQNum is set to 0 the Frequency parameter is
2679 overidden, it is forced to a value of FREQ_DIS.
2680 int PeriodicOnly: 1 if all interrupts except the periodic
2681 interrupt are to be blocked.
2682 0 is both the periodic interrupt and
2683 other channel interrupts are allowed.
2684 If IRQNum is set to 0 the PeriodicOnly parameter is
2685 overidden, it is forced to a value of 0.
2686 Return: int: Number of AIOPs on the controller, or CTLID_NULL if controller
2687 initialization failed.
2690 If periodic interrupts are to be disabled but AIOP interrupts
2691 are allowed, set Frequency to FREQ_DIS and PeriodicOnly to 0.
2693 If interrupts are to be completely disabled set IRQNum to 0.
2695 Setting Frequency to FREQ_DIS and PeriodicOnly to 1 is an
2696 invalid combination.
2698 This function performs initialization of global interrupt modes,
2699 but it does not actually enable global interrupts. To enable
2700 and disable global interrupts use functions sEnGlobalInt() and
2701 sDisGlobalInt(). Enabling of global interrupts is normally not
2702 done until all other initializations are complete.
2704 Even if interrupts are globally enabled, they must also be
2705 individually enabled for each channel that is to generate
2708 Warnings: No range checking on any of the parameters is done.
2710 No context switches are allowed while executing this function.
2712 After this function all AIOPs on the controller are disabled,
2713 they can be enabled with sEnAiop().
2715 static int sPCIInitController(CONTROLLER_T * CtlP, int CtlNum,
2716 ByteIO_t * AiopIOList, int AiopIOListSize,
2717 WordIO_t ConfigIO, int IRQNum, Byte_t Frequency,
2718 int PeriodicOnly, int altChanRingIndicator,
2724 CtlP->AltChanRingIndicator = altChanRingIndicator;
2725 CtlP->UPCIRingInd = UPCIRingInd;
2726 CtlP->CtlNum = CtlNum;
2727 CtlP->CtlID = CTLID_0001; /* controller release 1 */
2728 CtlP->BusType = isPCI; /* controller release 1 */
2732 CtlP->PCIIO = ConfigIO + _PCI_9030_INT_CTRL;
2733 CtlP->PCIIO2 = ConfigIO + _PCI_9030_GPIO_CTRL;
2734 CtlP->AiopIntrBits = upci_aiop_intr_bits;
2738 (WordIO_t) ((ByteIO_t) AiopIOList[0] + _PCI_INT_FUNC);
2739 CtlP->AiopIntrBits = aiop_intr_bits;
2742 sPCIControllerEOI(CtlP); /* clear EOI if warm init */
2745 for (i = 0; i < AiopIOListSize; i++) {
2747 CtlP->AiopIO[i] = (WordIO_t) io;
2748 CtlP->AiopIntChanIO[i] = io + _INT_CHAN;
2750 CtlP->AiopID[i] = sReadAiopID(io); /* read AIOP ID */
2751 if (CtlP->AiopID[i] == AIOPID_NULL) /* if AIOP does not exist */
2752 break; /* done looking for AIOPs */
2754 CtlP->AiopNumChan[i] = sReadAiopNumChan((WordIO_t) io); /* num channels in AIOP */
2755 sOutW((WordIO_t) io + _INDX_ADDR, _CLK_PRE); /* clock prescaler */
2756 sOutB(io + _INDX_DATA, sClockPrescale);
2757 CtlP->NumAiop++; /* bump count of AIOPs */
2760 if (CtlP->NumAiop == 0)
2763 return (CtlP->NumAiop);
2766 /***************************************************************************
2767 Function: sReadAiopID
2768 Purpose: Read the AIOP idenfication number directly from an AIOP.
2769 Call: sReadAiopID(io)
2770 ByteIO_t io: AIOP base I/O address
2771 Return: int: Flag AIOPID_XXXX if a valid AIOP is found, where X
2772 is replace by an identifying number.
2773 Flag AIOPID_NULL if no valid AIOP is found
2774 Warnings: No context switches are allowed while executing this function.
2777 static int sReadAiopID(ByteIO_t io)
2779 Byte_t AiopID; /* ID byte from AIOP */
2781 sOutB(io + _CMD_REG, RESET_ALL); /* reset AIOP */
2782 sOutB(io + _CMD_REG, 0x0);
2783 AiopID = sInW(io + _CHN_STAT0) & 0x07;
2786 else /* AIOP does not exist */
2790 /***************************************************************************
2791 Function: sReadAiopNumChan
2792 Purpose: Read the number of channels available in an AIOP directly from
2794 Call: sReadAiopNumChan(io)
2795 WordIO_t io: AIOP base I/O address
2796 Return: int: The number of channels available
2797 Comments: The number of channels is determined by write/reads from identical
2798 offsets within the SRAM address spaces for channels 0 and 4.
2799 If the channel 4 space is mirrored to channel 0 it is a 4 channel
2800 AIOP, otherwise it is an 8 channel.
2801 Warnings: No context switches are allowed while executing this function.
2803 static int sReadAiopNumChan(WordIO_t io)
2806 static Byte_t R[4] = { 0x00, 0x00, 0x34, 0x12 };
2808 /* write to chan 0 SRAM */
2809 sOutDW((DWordIO_t) io + _INDX_ADDR, *((DWord_t *) & R[0]));
2810 sOutW(io + _INDX_ADDR, 0); /* read from SRAM, chan 0 */
2811 x = sInW(io + _INDX_DATA);
2812 sOutW(io + _INDX_ADDR, 0x4000); /* read from SRAM, chan 4 */
2813 if (x != sInW(io + _INDX_DATA)) /* if different must be 8 chan */
2819 /***************************************************************************
2821 Purpose: Initialization of a channel and channel structure
2822 Call: sInitChan(CtlP,ChP,AiopNum,ChanNum)
2823 CONTROLLER_T *CtlP; Ptr to controller structure
2824 CHANNEL_T *ChP; Ptr to channel structure
2825 int AiopNum; AIOP number within controller
2826 int ChanNum; Channel number within AIOP
2827 Return: int: 1 if initialization succeeded, 0 if it fails because channel
2828 number exceeds number of channels available in AIOP.
2829 Comments: This function must be called before a channel can be used.
2830 Warnings: No range checking on any of the parameters is done.
2832 No context switches are allowed while executing this function.
2834 static int sInitChan(CONTROLLER_T * CtlP, CHANNEL_T * ChP, int AiopNum,
2845 if (ChanNum >= CtlP->AiopNumChan[AiopNum])
2846 return 0; /* exceeds num chans in AIOP */
2848 /* Channel, AIOP, and controller identifiers */
2850 ChP->ChanID = CtlP->AiopID[AiopNum];
2851 ChP->AiopNum = AiopNum;
2852 ChP->ChanNum = ChanNum;
2854 /* Global direct addresses */
2855 AiopIO = CtlP->AiopIO[AiopNum];
2856 ChP->Cmd = (ByteIO_t) AiopIO + _CMD_REG;
2857 ChP->IntChan = (ByteIO_t) AiopIO + _INT_CHAN;
2858 ChP->IntMask = (ByteIO_t) AiopIO + _INT_MASK;
2859 ChP->IndexAddr = (DWordIO_t) AiopIO + _INDX_ADDR;
2860 ChP->IndexData = AiopIO + _INDX_DATA;
2862 /* Channel direct addresses */
2863 ChIOOff = AiopIO + ChP->ChanNum * 2;
2864 ChP->TxRxData = ChIOOff + _TD0;
2865 ChP->ChanStat = ChIOOff + _CHN_STAT0;
2866 ChP->TxRxCount = ChIOOff + _FIFO_CNT0;
2867 ChP->IntID = (ByteIO_t) AiopIO + ChP->ChanNum + _INT_ID0;
2869 /* Initialize the channel from the RData array */
2870 for (i = 0; i < RDATASIZE; i += 4) {
2872 R[1] = RData[i + 1] + 0x10 * ChanNum;
2873 R[2] = RData[i + 2];
2874 R[3] = RData[i + 3];
2875 sOutDW(ChP->IndexAddr, *((DWord_t *) & R[0]));
2879 for (i = 0; i < RREGDATASIZE; i += 4) {
2880 ChR[i] = RRegData[i];
2881 ChR[i + 1] = RRegData[i + 1] + 0x10 * ChanNum;
2882 ChR[i + 2] = RRegData[i + 2];
2883 ChR[i + 3] = RRegData[i + 3];
2886 /* Indexed registers */
2887 ChOff = (Word_t) ChanNum *0x1000;
2889 if (sClockPrescale == 0x14)
2894 ChP->BaudDiv[0] = (Byte_t) (ChOff + _BAUD);
2895 ChP->BaudDiv[1] = (Byte_t) ((ChOff + _BAUD) >> 8);
2896 ChP->BaudDiv[2] = (Byte_t) brd9600;
2897 ChP->BaudDiv[3] = (Byte_t) (brd9600 >> 8);
2898 sOutDW(ChP->IndexAddr, *(DWord_t *) & ChP->BaudDiv[0]);
2900 ChP->TxControl[0] = (Byte_t) (ChOff + _TX_CTRL);
2901 ChP->TxControl[1] = (Byte_t) ((ChOff + _TX_CTRL) >> 8);
2902 ChP->TxControl[2] = 0;
2903 ChP->TxControl[3] = 0;
2904 sOutDW(ChP->IndexAddr, *(DWord_t *) & ChP->TxControl[0]);
2906 ChP->RxControl[0] = (Byte_t) (ChOff + _RX_CTRL);
2907 ChP->RxControl[1] = (Byte_t) ((ChOff + _RX_CTRL) >> 8);
2908 ChP->RxControl[2] = 0;
2909 ChP->RxControl[3] = 0;
2910 sOutDW(ChP->IndexAddr, *(DWord_t *) & ChP->RxControl[0]);
2912 ChP->TxEnables[0] = (Byte_t) (ChOff + _TX_ENBLS);
2913 ChP->TxEnables[1] = (Byte_t) ((ChOff + _TX_ENBLS) >> 8);
2914 ChP->TxEnables[2] = 0;
2915 ChP->TxEnables[3] = 0;
2916 sOutDW(ChP->IndexAddr, *(DWord_t *) & ChP->TxEnables[0]);
2918 ChP->TxCompare[0] = (Byte_t) (ChOff + _TXCMP1);
2919 ChP->TxCompare[1] = (Byte_t) ((ChOff + _TXCMP1) >> 8);
2920 ChP->TxCompare[2] = 0;
2921 ChP->TxCompare[3] = 0;
2922 sOutDW(ChP->IndexAddr, *(DWord_t *) & ChP->TxCompare[0]);
2924 ChP->TxReplace1[0] = (Byte_t) (ChOff + _TXREP1B1);
2925 ChP->TxReplace1[1] = (Byte_t) ((ChOff + _TXREP1B1) >> 8);
2926 ChP->TxReplace1[2] = 0;
2927 ChP->TxReplace1[3] = 0;
2928 sOutDW(ChP->IndexAddr, *(DWord_t *) & ChP->TxReplace1[0]);
2930 ChP->TxReplace2[0] = (Byte_t) (ChOff + _TXREP2);
2931 ChP->TxReplace2[1] = (Byte_t) ((ChOff + _TXREP2) >> 8);
2932 ChP->TxReplace2[2] = 0;
2933 ChP->TxReplace2[3] = 0;
2934 sOutDW(ChP->IndexAddr, *(DWord_t *) & ChP->TxReplace2[0]);
2936 ChP->TxFIFOPtrs = ChOff + _TXF_OUTP;
2937 ChP->TxFIFO = ChOff + _TX_FIFO;
2939 sOutB(ChP->Cmd, (Byte_t) ChanNum | RESTXFCNT); /* apply reset Tx FIFO count */
2940 sOutB(ChP->Cmd, (Byte_t) ChanNum); /* remove reset Tx FIFO count */
2941 sOutW((WordIO_t) ChP->IndexAddr, ChP->TxFIFOPtrs); /* clear Tx in/out ptrs */
2942 sOutW(ChP->IndexData, 0);
2943 ChP->RxFIFOPtrs = ChOff + _RXF_OUTP;
2944 ChP->RxFIFO = ChOff + _RX_FIFO;
2946 sOutB(ChP->Cmd, (Byte_t) ChanNum | RESRXFCNT); /* apply reset Rx FIFO count */
2947 sOutB(ChP->Cmd, (Byte_t) ChanNum); /* remove reset Rx FIFO count */
2948 sOutW((WordIO_t) ChP->IndexAddr, ChP->RxFIFOPtrs); /* clear Rx out ptr */
2949 sOutW(ChP->IndexData, 0);
2950 sOutW((WordIO_t) ChP->IndexAddr, ChP->RxFIFOPtrs + 2); /* clear Rx in ptr */
2951 sOutW(ChP->IndexData, 0);
2952 ChP->TxPrioCnt = ChOff + _TXP_CNT;
2953 sOutW((WordIO_t) ChP->IndexAddr, ChP->TxPrioCnt);
2954 sOutB(ChP->IndexData, 0);
2955 ChP->TxPrioPtr = ChOff + _TXP_PNTR;
2956 sOutW((WordIO_t) ChP->IndexAddr, ChP->TxPrioPtr);
2957 sOutB(ChP->IndexData, 0);
2958 ChP->TxPrioBuf = ChOff + _TXP_BUF;
2959 sEnRxProcessor(ChP); /* start the Rx processor */
2964 /***************************************************************************
2965 Function: sStopRxProcessor
2966 Purpose: Stop the receive processor from processing a channel.
2967 Call: sStopRxProcessor(ChP)
2968 CHANNEL_T *ChP; Ptr to channel structure
2970 Comments: The receive processor can be started again with sStartRxProcessor().
2971 This function causes the receive processor to skip over the
2972 stopped channel. It does not stop it from processing other channels.
2974 Warnings: No context switches are allowed while executing this function.
2976 Do not leave the receive processor stopped for more than one
2979 After calling this function a delay of 4 uS is required to ensure
2980 that the receive processor is no longer processing this channel.
2982 static void sStopRxProcessor(CHANNEL_T * ChP)
2990 sOutDW(ChP->IndexAddr, *(DWord_t *) & R[0]);
2993 /***************************************************************************
2994 Function: sFlushRxFIFO
2995 Purpose: Flush the Rx FIFO
2996 Call: sFlushRxFIFO(ChP)
2997 CHANNEL_T *ChP; Ptr to channel structure
2999 Comments: To prevent data from being enqueued or dequeued in the Tx FIFO
3000 while it is being flushed the receive processor is stopped
3001 and the transmitter is disabled. After these operations a
3002 4 uS delay is done before clearing the pointers to allow
3003 the receive processor to stop. These items are handled inside
3005 Warnings: No context switches are allowed while executing this function.
3007 static void sFlushRxFIFO(CHANNEL_T * ChP)
3010 Byte_t Ch; /* channel number within AIOP */
3011 int RxFIFOEnabled; /* 1 if Rx FIFO enabled */
3013 if (sGetRxCnt(ChP) == 0) /* Rx FIFO empty */
3014 return; /* don't need to flush */
3017 if (ChP->R[0x32] == 0x08) { /* Rx FIFO is enabled */
3019 sDisRxFIFO(ChP); /* disable it */
3020 for (i = 0; i < 2000 / 200; i++) /* delay 2 uS to allow proc to disable FIFO */
3021 sInB(ChP->IntChan); /* depends on bus i/o timing */
3023 sGetChanStatus(ChP); /* clear any pending Rx errors in chan stat */
3024 Ch = (Byte_t) sGetChanNum(ChP);
3025 sOutB(ChP->Cmd, Ch | RESRXFCNT); /* apply reset Rx FIFO count */
3026 sOutB(ChP->Cmd, Ch); /* remove reset Rx FIFO count */
3027 sOutW((WordIO_t) ChP->IndexAddr, ChP->RxFIFOPtrs); /* clear Rx out ptr */
3028 sOutW(ChP->IndexData, 0);
3029 sOutW((WordIO_t) ChP->IndexAddr, ChP->RxFIFOPtrs + 2); /* clear Rx in ptr */
3030 sOutW(ChP->IndexData, 0);
3032 sEnRxFIFO(ChP); /* enable Rx FIFO */
3035 /***************************************************************************
3036 Function: sFlushTxFIFO
3037 Purpose: Flush the Tx FIFO
3038 Call: sFlushTxFIFO(ChP)
3039 CHANNEL_T *ChP; Ptr to channel structure
3041 Comments: To prevent data from being enqueued or dequeued in the Tx FIFO
3042 while it is being flushed the receive processor is stopped
3043 and the transmitter is disabled. After these operations a
3044 4 uS delay is done before clearing the pointers to allow
3045 the receive processor to stop. These items are handled inside
3047 Warnings: No context switches are allowed while executing this function.
3049 static void sFlushTxFIFO(CHANNEL_T * ChP)
3052 Byte_t Ch; /* channel number within AIOP */
3053 int TxEnabled; /* 1 if transmitter enabled */
3055 if (sGetTxCnt(ChP) == 0) /* Tx FIFO empty */
3056 return; /* don't need to flush */
3059 if (ChP->TxControl[3] & TX_ENABLE) {
3061 sDisTransmit(ChP); /* disable transmitter */
3063 sStopRxProcessor(ChP); /* stop Rx processor */
3064 for (i = 0; i < 4000 / 200; i++) /* delay 4 uS to allow proc to stop */
3065 sInB(ChP->IntChan); /* depends on bus i/o timing */
3066 Ch = (Byte_t) sGetChanNum(ChP);
3067 sOutB(ChP->Cmd, Ch | RESTXFCNT); /* apply reset Tx FIFO count */
3068 sOutB(ChP->Cmd, Ch); /* remove reset Tx FIFO count */
3069 sOutW((WordIO_t) ChP->IndexAddr, ChP->TxFIFOPtrs); /* clear Tx in/out ptrs */
3070 sOutW(ChP->IndexData, 0);
3072 sEnTransmit(ChP); /* enable transmitter */
3073 sStartRxProcessor(ChP); /* restart Rx processor */
3076 /***************************************************************************
3077 Function: sWriteTxPrioByte
3078 Purpose: Write a byte of priority transmit data to a channel
3079 Call: sWriteTxPrioByte(ChP,Data)
3080 CHANNEL_T *ChP; Ptr to channel structure
3081 Byte_t Data; The transmit data byte
3083 Return: int: 1 if the bytes is successfully written, otherwise 0.
3085 Comments: The priority byte is transmitted before any data in the Tx FIFO.
3087 Warnings: No context switches are allowed while executing this function.
3089 static int sWriteTxPrioByte(CHANNEL_T * ChP, Byte_t Data)
3091 Byte_t DWBuf[4]; /* buffer for double word writes */
3092 Word_t *WordPtr; /* must be far because Win SS != DS */
3093 register DWordIO_t IndexAddr;
3095 if (sGetTxCnt(ChP) > 1) { /* write it to Tx priority buffer */
3096 IndexAddr = ChP->IndexAddr;
3097 sOutW((WordIO_t) IndexAddr, ChP->TxPrioCnt); /* get priority buffer status */
3098 if (sInB((ByteIO_t) ChP->IndexData) & PRI_PEND) /* priority buffer busy */
3099 return (0); /* nothing sent */
3101 WordPtr = (Word_t *) (&DWBuf[0]);
3102 *WordPtr = ChP->TxPrioBuf; /* data byte address */
3104 DWBuf[2] = Data; /* data byte value */
3105 sOutDW(IndexAddr, *((DWord_t *) (&DWBuf[0]))); /* write it out */
3107 *WordPtr = ChP->TxPrioCnt; /* Tx priority count address */
3109 DWBuf[2] = PRI_PEND + 1; /* indicate 1 byte pending */
3110 DWBuf[3] = 0; /* priority buffer pointer */
3111 sOutDW(IndexAddr, *((DWord_t *) (&DWBuf[0]))); /* write it out */
3112 } else { /* write it to Tx FIFO */
3114 sWriteTxByte(sGetTxRxDataIO(ChP), Data);
3116 return (1); /* 1 byte sent */
3119 /***************************************************************************
3120 Function: sEnInterrupts
3121 Purpose: Enable one or more interrupts for a channel
3122 Call: sEnInterrupts(ChP,Flags)
3123 CHANNEL_T *ChP; Ptr to channel structure
3124 Word_t Flags: Interrupt enable flags, can be any combination
3125 of the following flags:
3126 TXINT_EN: Interrupt on Tx FIFO empty
3127 RXINT_EN: Interrupt on Rx FIFO at trigger level (see
3129 SRCINT_EN: Interrupt on SRC (Special Rx Condition)
3130 MCINT_EN: Interrupt on modem input change
3131 CHANINT_EN: Allow channel interrupt signal to the AIOP's
3132 Interrupt Channel Register.
3134 Comments: If an interrupt enable flag is set in Flags, that interrupt will be
3135 enabled. If an interrupt enable flag is not set in Flags, that
3136 interrupt will not be changed. Interrupts can be disabled with
3137 function sDisInterrupts().
3139 This function sets the appropriate bit for the channel in the AIOP's
3140 Interrupt Mask Register if the CHANINT_EN flag is set. This allows
3141 this channel's bit to be set in the AIOP's Interrupt Channel Register.
3143 Interrupts must also be globally enabled before channel interrupts
3144 will be passed on to the host. This is done with function
3147 In some cases it may be desirable to disable interrupts globally but
3148 enable channel interrupts. This would allow the global interrupt
3149 status register to be used to determine which AIOPs need service.
3151 static void sEnInterrupts(CHANNEL_T * ChP, Word_t Flags)
3153 Byte_t Mask; /* Interrupt Mask Register */
3155 ChP->RxControl[2] |=
3156 ((Byte_t) Flags & (RXINT_EN | SRCINT_EN | MCINT_EN));
3158 sOutDW(ChP->IndexAddr, *(DWord_t *) & ChP->RxControl[0]);
3160 ChP->TxControl[2] |= ((Byte_t) Flags & TXINT_EN);
3162 sOutDW(ChP->IndexAddr, *(DWord_t *) & ChP->TxControl[0]);
3164 if (Flags & CHANINT_EN) {
3165 Mask = sInB(ChP->IntMask) | sBitMapSetTbl[ChP->ChanNum];
3166 sOutB(ChP->IntMask, Mask);
3170 /***************************************************************************
3171 Function: sDisInterrupts
3172 Purpose: Disable one or more interrupts for a channel
3173 Call: sDisInterrupts(ChP,Flags)
3174 CHANNEL_T *ChP; Ptr to channel structure
3175 Word_t Flags: Interrupt flags, can be any combination
3176 of the following flags:
3177 TXINT_EN: Interrupt on Tx FIFO empty
3178 RXINT_EN: Interrupt on Rx FIFO at trigger level (see
3180 SRCINT_EN: Interrupt on SRC (Special Rx Condition)
3181 MCINT_EN: Interrupt on modem input change
3182 CHANINT_EN: Disable channel interrupt signal to the
3183 AIOP's Interrupt Channel Register.
3185 Comments: If an interrupt flag is set in Flags, that interrupt will be
3186 disabled. If an interrupt flag is not set in Flags, that
3187 interrupt will not be changed. Interrupts can be enabled with
3188 function sEnInterrupts().
3190 This function clears the appropriate bit for the channel in the AIOP's
3191 Interrupt Mask Register if the CHANINT_EN flag is set. This blocks
3192 this channel's bit from being set in the AIOP's Interrupt Channel
3195 static void sDisInterrupts(CHANNEL_T * ChP, Word_t Flags)
3197 Byte_t Mask; /* Interrupt Mask Register */
3199 ChP->RxControl[2] &=
3200 ~((Byte_t) Flags & (RXINT_EN | SRCINT_EN | MCINT_EN));
3201 sOutDW(ChP->IndexAddr, *(DWord_t *) & ChP->RxControl[0]);
3202 ChP->TxControl[2] &= ~((Byte_t) Flags & TXINT_EN);
3203 sOutDW(ChP->IndexAddr, *(DWord_t *) & ChP->TxControl[0]);
3205 if (Flags & CHANINT_EN) {
3206 Mask = sInB(ChP->IntMask) & sBitMapClrTbl[ChP->ChanNum];
3207 sOutB(ChP->IntMask, Mask);
3211 static void sSetInterfaceMode(CHANNEL_T * ChP, Byte_t mode)
3213 sOutB(ChP->CtlP->AiopIO[2], (mode & 0x18) | ChP->ChanNum);
3217 * Not an official SSCI function, but how to reset RocketModems.
3220 static void sModemReset(CONTROLLER_T * CtlP, int chan, int on)
3225 addr = CtlP->AiopIO[0] + 0x400;
3226 val = sInB(CtlP->MReg3IO);
3227 /* if AIOP[1] is not enabled, enable it */
3228 if ((val & 2) == 0) {
3229 val = sInB(CtlP->MReg2IO);
3230 sOutB(CtlP->MReg2IO, (val & 0xfc) | (1 & 0x03));
3231 sOutB(CtlP->MBaseIO, (unsigned char) (addr >> 6));
3237 sOutB(addr + chan, 0); /* apply or remove reset */
3242 * Not an official SSCI function, but how to reset RocketModems.
3245 static void sPCIModemReset(CONTROLLER_T * CtlP, int chan, int on)
3249 addr = CtlP->AiopIO[0] + 0x40; /* 2nd AIOP */
3252 sOutB(addr + chan, 0); /* apply or remove reset */
3255 /* Resets the speaker controller on RocketModem II and III devices */
3256 static void rmSpeakerReset(CONTROLLER_T * CtlP, unsigned long model)
3260 /* RocketModem II speaker control is at the 8th port location of offset 0x40 */
3261 if ((model == MODEL_RP4M) || (model == MODEL_RP6M)) {
3262 addr = CtlP->AiopIO[0] + 0x4F;
3266 /* RocketModem III speaker control is at the 1st port location of offset 0x80 */
3267 if ((model == MODEL_UPCI_RM3_8PORT)
3268 || (model == MODEL_UPCI_RM3_4PORT)) {
3269 addr = CtlP->AiopIO[0] + 0x88;
3274 /* Returns the line number given the controller (board), aiop and channel number */
3275 static unsigned char GetLineNumber(int ctrl, int aiop, int ch)
3277 return lineNumbers[(ctrl << 5) | (aiop << 3) | ch];
3281 * Stores the line number associated with a given controller (board), aiop
3282 * and channel number.
3283 * Returns: The line number assigned
3285 static unsigned char SetLineNumber(int ctrl, int aiop, int ch)
3287 lineNumbers[(ctrl << 5) | (aiop << 3) | ch] = nextLineNumber++;
3288 return (nextLineNumber - 1);