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);
260 MODULE_AUTHOR("Theodore Ts'o");
261 MODULE_DESCRIPTION("Comtrol RocketPort driver");
262 module_param(board1, ulong, 0);
263 MODULE_PARM_DESC(board1, "I/O port for (ISA) board #1");
264 module_param(board2, ulong, 0);
265 MODULE_PARM_DESC(board2, "I/O port for (ISA) board #2");
266 module_param(board3, ulong, 0);
267 MODULE_PARM_DESC(board3, "I/O port for (ISA) board #3");
268 module_param(board4, ulong, 0);
269 MODULE_PARM_DESC(board4, "I/O port for (ISA) board #4");
270 module_param(controller, ulong, 0);
271 MODULE_PARM_DESC(controller, "I/O port for (ISA) rocketport controller");
272 module_param(support_low_speed, bool, 0);
273 MODULE_PARM_DESC(support_low_speed, "1 means support 50 baud, 0 means support 460400 baud");
274 module_param(modem1, ulong, 0);
275 MODULE_PARM_DESC(modem1, "1 means (ISA) board #1 is a RocketModem");
276 module_param(modem2, ulong, 0);
277 MODULE_PARM_DESC(modem2, "1 means (ISA) board #2 is a RocketModem");
278 module_param(modem3, ulong, 0);
279 MODULE_PARM_DESC(modem3, "1 means (ISA) board #3 is a RocketModem");
280 module_param(modem4, ulong, 0);
281 MODULE_PARM_DESC(modem4, "1 means (ISA) board #4 is a RocketModem");
282 module_param_array(pc104_1, ulong, NULL, 0);
283 MODULE_PARM_DESC(pc104_1, "set interface types for ISA(PC104) board #1 (e.g. pc104_1=232,232,485,485,...");
284 module_param_array(pc104_2, ulong, NULL, 0);
285 MODULE_PARM_DESC(pc104_2, "set interface types for ISA(PC104) board #2 (e.g. pc104_2=232,232,485,485,...");
286 module_param_array(pc104_3, ulong, NULL, 0);
287 MODULE_PARM_DESC(pc104_3, "set interface types for ISA(PC104) board #3 (e.g. pc104_3=232,232,485,485,...");
288 module_param_array(pc104_4, ulong, NULL, 0);
289 MODULE_PARM_DESC(pc104_4, "set interface types for ISA(PC104) board #4 (e.g. pc104_4=232,232,485,485,...");
292 static void rp_cleanup_module(void);
294 module_init(rp_init);
295 module_exit(rp_cleanup_module);
299 #ifdef MODULE_LICENSE
300 MODULE_LICENSE("Dual BSD/GPL");
303 /*************************************************************************/
304 /* Module code starts here */
306 static inline int rocket_paranoia_check(struct r_port *info,
309 #ifdef ROCKET_PARANOIA_CHECK
312 if (info->magic != RPORT_MAGIC) {
313 printk(KERN_INFO "Warning: bad magic number for rocketport struct in %s\n",
322 /* Serial port receive data function. Called (from timer poll) when an AIOPIC signals
323 * that receive data is present on a serial port. Pulls data from FIFO, moves it into the
326 static void rp_do_receive(struct r_port *info,
327 struct tty_struct *tty,
328 CHANNEL_t * cp, unsigned int ChanStatus)
330 unsigned int CharNStat;
331 int ToRecv, wRecv, space = 0, count;
334 struct tty_ldisc *ld;
336 ld = tty_ldisc_ref(tty);
338 ToRecv = sGetRxCnt(cp);
340 space = ld->receive_room(tty);
341 if (space > 2 * TTY_FLIPBUF_SIZE)
342 space = 2 * TTY_FLIPBUF_SIZE;
343 cbuf = tty->flip.char_buf;
344 fbuf = tty->flip.flag_buf;
346 #ifdef ROCKET_DEBUG_INTR
347 printk(KERN_INFO "rp_do_receive(%d, %d)...", ToRecv, space);
351 * determine how many we can actually read in. If we can't
352 * read any in then we have a software overrun condition.
361 * if status indicates there are errored characters in the
362 * FIFO, then enter status mode (a word in FIFO holds
363 * character and status).
365 if (ChanStatus & (RXFOVERFL | RXBREAK | RXFRAME | RXPARITY)) {
366 if (!(ChanStatus & STATMODE)) {
367 #ifdef ROCKET_DEBUG_RECEIVE
368 printk(KERN_INFO "Entering STATMODE...");
370 ChanStatus |= STATMODE;
376 * if we previously entered status mode, then read down the
377 * FIFO one word at a time, pulling apart the character and
378 * the status. Update error counters depending on status
380 if (ChanStatus & STATMODE) {
381 #ifdef ROCKET_DEBUG_RECEIVE
382 printk(KERN_INFO "Ignore %x, read %x...", info->ignore_status_mask,
383 info->read_status_mask);
386 CharNStat = sInW(sGetTxRxDataIO(cp));
387 #ifdef ROCKET_DEBUG_RECEIVE
388 printk(KERN_INFO "%x...", CharNStat);
390 if (CharNStat & STMBREAKH)
391 CharNStat &= ~(STMFRAMEH | STMPARITYH);
392 if (CharNStat & info->ignore_status_mask) {
396 CharNStat &= info->read_status_mask;
397 if (CharNStat & STMBREAKH)
399 else if (CharNStat & STMPARITYH)
400 *fbuf++ = TTY_PARITY;
401 else if (CharNStat & STMFRAMEH)
403 else if (CharNStat & STMRCVROVRH)
404 *fbuf++ = TTY_OVERRUN;
407 *cbuf++ = CharNStat & 0xff;
413 * after we've emptied the FIFO in status mode, turn
414 * status mode back off
416 if (sGetRxCnt(cp) == 0) {
417 #ifdef ROCKET_DEBUG_RECEIVE
418 printk(KERN_INFO "Status mode off.\n");
420 sDisRxStatusMode(cp);
424 * we aren't in status mode, so read down the FIFO two
425 * characters at time by doing repeated word IO
430 sInStrW(sGetTxRxDataIO(cp), (unsigned short *) cbuf, wRecv);
432 cbuf[ToRecv - 1] = sInB(sGetTxRxDataIO(cp));
433 memset(fbuf, 0, ToRecv);
438 /* Push the data up to the tty layer */
439 ld->receive_buf(tty, tty->flip.char_buf, tty->flip.flag_buf, count);
445 * Serial port transmit data function. Called from the timer polling loop as a
446 * result of a bit set in xmit_flags[], indicating data (from the tty layer) is ready
447 * to be sent out the serial port. Data is buffered in rp_table[line].xmit_buf, it is
448 * moved to the port's xmit FIFO. *info is critical data, protected by spinlocks.
450 static void rp_do_transmit(struct r_port *info)
453 CHANNEL_t *cp = &info->channel;
454 struct tty_struct *tty;
457 #ifdef ROCKET_DEBUG_INTR
458 printk(KERN_INFO "rp_do_transmit ");
463 printk(KERN_INFO "rp: WARNING rp_do_transmit called with info->tty==NULL\n");
464 clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
468 spin_lock_irqsave(&info->slock, flags);
470 info->xmit_fifo_room = TXFIFO_SIZE - sGetTxCnt(cp);
472 /* Loop sending data to FIFO until done or FIFO full */
474 if (tty->stopped || tty->hw_stopped)
476 c = min(info->xmit_fifo_room, min(info->xmit_cnt, XMIT_BUF_SIZE - info->xmit_tail));
477 if (c <= 0 || info->xmit_fifo_room <= 0)
479 sOutStrW(sGetTxRxDataIO(cp), (unsigned short *) (info->xmit_buf + info->xmit_tail), c / 2);
481 sOutB(sGetTxRxDataIO(cp), info->xmit_buf[info->xmit_tail + c - 1]);
482 info->xmit_tail += c;
483 info->xmit_tail &= XMIT_BUF_SIZE - 1;
485 info->xmit_fifo_room -= c;
486 #ifdef ROCKET_DEBUG_INTR
487 printk(KERN_INFO "tx %d chars...", c);
491 if (info->xmit_cnt == 0)
492 clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
494 if (info->xmit_cnt < WAKEUP_CHARS) {
496 wake_up_interruptible(&tty->write_wait);
497 #ifdef ROCKETPORT_HAVE_POLL_WAIT
498 wake_up_interruptible(&tty->poll_wait);
502 spin_unlock_irqrestore(&info->slock, flags);
504 #ifdef ROCKET_DEBUG_INTR
505 printk(KERN_INFO "(%d,%d,%d,%d)...", info->xmit_cnt, info->xmit_head,
506 info->xmit_tail, info->xmit_fifo_room);
511 * Called when a serial port signals it has read data in it's RX FIFO.
512 * It checks what interrupts are pending and services them, including
513 * receiving serial data.
515 static void rp_handle_port(struct r_port *info)
518 struct tty_struct *tty;
519 unsigned int IntMask, ChanStatus;
524 if ((info->flags & ROCKET_INITIALIZED) == 0) {
525 printk(KERN_INFO "rp: WARNING: rp_handle_port called with info->flags & NOT_INIT\n");
529 printk(KERN_INFO "rp: WARNING: rp_handle_port called with info->tty==NULL\n");
535 IntMask = sGetChanIntID(cp) & info->intmask;
536 #ifdef ROCKET_DEBUG_INTR
537 printk(KERN_INFO "rp_interrupt %02x...", IntMask);
539 ChanStatus = sGetChanStatus(cp);
540 if (IntMask & RXF_TRIG) { /* Rx FIFO trigger level */
541 rp_do_receive(info, tty, cp, ChanStatus);
543 if (IntMask & DELTA_CD) { /* CD change */
544 #if (defined(ROCKET_DEBUG_OPEN) || defined(ROCKET_DEBUG_INTR) || defined(ROCKET_DEBUG_HANGUP))
545 printk(KERN_INFO "ttyR%d CD now %s...", info->line,
546 (ChanStatus & CD_ACT) ? "on" : "off");
548 if (!(ChanStatus & CD_ACT) && info->cd_status) {
549 #ifdef ROCKET_DEBUG_HANGUP
550 printk(KERN_INFO "CD drop, calling hangup.\n");
554 info->cd_status = (ChanStatus & CD_ACT) ? 1 : 0;
555 wake_up_interruptible(&info->open_wait);
557 #ifdef ROCKET_DEBUG_INTR
558 if (IntMask & DELTA_CTS) { /* CTS change */
559 printk(KERN_INFO "CTS change...\n");
561 if (IntMask & DELTA_DSR) { /* DSR change */
562 printk(KERN_INFO "DSR change...\n");
568 * The top level polling routine. Repeats every 1/100 HZ (10ms).
570 static void rp_do_poll(unsigned long dummy)
573 int ctrl, aiop, ch, line, i;
574 unsigned int xmitmask;
575 unsigned int CtlMask;
576 unsigned char AiopMask;
579 /* Walk through all the boards (ctrl's) */
580 for (ctrl = 0; ctrl < max_board; ctrl++) {
581 if (rcktpt_io_addr[ctrl] <= 0)
584 /* Get a ptr to the board's control struct */
585 ctlp = sCtlNumToCtlPtr(ctrl);
587 /* Get the interupt status from the board */
589 if (ctlp->BusType == isPCI)
590 CtlMask = sPCIGetControllerIntStatus(ctlp);
593 CtlMask = sGetControllerIntStatus(ctlp);
595 /* Check if any AIOP read bits are set */
596 for (aiop = 0; CtlMask; aiop++) {
597 bit = ctlp->AiopIntrBits[aiop];
600 AiopMask = sGetAiopIntStatus(ctlp, aiop);
602 /* Check if any port read bits are set */
603 for (ch = 0; AiopMask; AiopMask >>= 1, ch++) {
606 /* Get the line number (/dev/ttyRx number). */
607 /* Read the data from the port. */
608 line = GetLineNumber(ctrl, aiop, ch);
609 rp_handle_port(rp_table[line]);
615 xmitmask = xmit_flags[ctrl];
618 * xmit_flags contains bit-significant flags, indicating there is data
619 * to xmit on the port. Bit 0 is port 0 on this board, bit 1 is port
620 * 1, ... (32 total possible). The variable i has the aiop and ch
621 * numbers encoded in it (port 0-7 are aiop0, 8-15 are aiop1, etc).
624 for (i = 0; i < rocketModel[ctrl].numPorts; i++) {
625 if (xmitmask & (1 << i)) {
626 aiop = (i & 0x18) >> 3;
628 line = GetLineNumber(ctrl, aiop, ch);
629 rp_do_transmit(rp_table[line]);
636 * Reset the timer so we get called at the next clock tick (10ms).
638 if (atomic_read(&rp_num_ports_open))
639 mod_timer(&rocket_timer, jiffies + POLL_PERIOD);
643 * Initializes the r_port structure for a port, as well as enabling the port on
645 * Inputs: board, aiop, chan numbers
647 static void init_r_port(int board, int aiop, int chan, struct pci_dev *pci_dev)
654 /* Get the next available line number */
655 line = SetLineNumber(board, aiop, chan);
657 ctlp = sCtlNumToCtlPtr(board);
659 /* Get a r_port struct for the port, fill it in and save it globally, indexed by line number */
660 info = kmalloc(sizeof (struct r_port), GFP_KERNEL);
662 printk(KERN_INFO "Couldn't allocate info struct for line #%d\n", line);
665 memset(info, 0, sizeof (struct r_port));
667 info->magic = RPORT_MAGIC;
673 info->closing_wait = 3000;
674 info->close_delay = 50;
675 init_waitqueue_head(&info->open_wait);
676 init_waitqueue_head(&info->close_wait);
677 info->flags &= ~ROCKET_MODE_MASK;
678 switch (pc104[board][line]) {
680 info->flags |= ROCKET_MODE_RS422;
683 info->flags |= ROCKET_MODE_RS485;
687 info->flags |= ROCKET_MODE_RS232;
691 info->intmask = RXF_TRIG | TXFIFO_MT | SRC_INT | DELTA_CD | DELTA_CTS | DELTA_DSR;
692 if (sInitChan(ctlp, &info->channel, aiop, chan) == 0) {
693 printk(KERN_INFO "RocketPort sInitChan(%d, %d, %d) failed!\n", board, aiop, chan);
698 rocketMode = info->flags & ROCKET_MODE_MASK;
700 if ((info->flags & ROCKET_RTS_TOGGLE) || (rocketMode == ROCKET_MODE_RS485))
701 sEnRTSToggle(&info->channel);
703 sDisRTSToggle(&info->channel);
705 if (ctlp->boardType == ROCKET_TYPE_PC104) {
706 switch (rocketMode) {
707 case ROCKET_MODE_RS485:
708 sSetInterfaceMode(&info->channel, InterfaceModeRS485);
710 case ROCKET_MODE_RS422:
711 sSetInterfaceMode(&info->channel, InterfaceModeRS422);
713 case ROCKET_MODE_RS232:
715 if (info->flags & ROCKET_RTS_TOGGLE)
716 sSetInterfaceMode(&info->channel, InterfaceModeRS232T);
718 sSetInterfaceMode(&info->channel, InterfaceModeRS232);
722 spin_lock_init(&info->slock);
723 sema_init(&info->write_sem, 1);
724 rp_table[line] = info;
726 tty_register_device(rocket_driver, line, &pci_dev->dev);
730 * Configures a rocketport port according to its termio settings. Called from
731 * user mode into the driver (exception handler). *info CD manipulation is spinlock protected.
733 static void configure_r_port(struct r_port *info,
734 struct termios *old_termios)
739 int bits, baud, divisor;
742 if (!info->tty || !info->tty->termios)
745 cflag = info->tty->termios->c_cflag;
747 /* Byte size and parity */
748 if ((cflag & CSIZE) == CS8) {
755 if (cflag & CSTOPB) {
762 if (cflag & PARENB) {
765 if (cflag & PARODD) {
775 baud = tty_get_baud_rate(info->tty);
778 divisor = ((rp_baud_base[info->board] + (baud >> 1)) / baud) - 1;
779 if ((divisor >= 8192 || divisor < 0) && old_termios) {
780 info->tty->termios->c_cflag &= ~CBAUD;
781 info->tty->termios->c_cflag |=
782 (old_termios->c_cflag & CBAUD);
783 baud = tty_get_baud_rate(info->tty);
786 divisor = (rp_baud_base[info->board] / baud) - 1;
788 if (divisor >= 8192 || divisor < 0) {
790 divisor = (rp_baud_base[info->board] / baud) - 1;
792 info->cps = baud / bits;
793 sSetBaud(cp, divisor);
795 if (cflag & CRTSCTS) {
796 info->intmask |= DELTA_CTS;
799 info->intmask &= ~DELTA_CTS;
802 if (cflag & CLOCAL) {
803 info->intmask &= ~DELTA_CD;
805 spin_lock_irqsave(&info->slock, flags);
806 if (sGetChanStatus(cp) & CD_ACT)
810 info->intmask |= DELTA_CD;
811 spin_unlock_irqrestore(&info->slock, flags);
815 * Handle software flow control in the board
817 #ifdef ROCKET_SOFT_FLOW
818 if (I_IXON(info->tty)) {
819 sEnTxSoftFlowCtl(cp);
820 if (I_IXANY(info->tty)) {
825 sSetTxXONChar(cp, START_CHAR(info->tty));
826 sSetTxXOFFChar(cp, STOP_CHAR(info->tty));
828 sDisTxSoftFlowCtl(cp);
835 * Set up ignore/read mask words
837 info->read_status_mask = STMRCVROVRH | 0xFF;
838 if (I_INPCK(info->tty))
839 info->read_status_mask |= STMFRAMEH | STMPARITYH;
840 if (I_BRKINT(info->tty) || I_PARMRK(info->tty))
841 info->read_status_mask |= STMBREAKH;
844 * Characters to ignore
846 info->ignore_status_mask = 0;
847 if (I_IGNPAR(info->tty))
848 info->ignore_status_mask |= STMFRAMEH | STMPARITYH;
849 if (I_IGNBRK(info->tty)) {
850 info->ignore_status_mask |= STMBREAKH;
852 * If we're ignoring parity and break indicators,
853 * ignore overruns too. (For real raw support).
855 if (I_IGNPAR(info->tty))
856 info->ignore_status_mask |= STMRCVROVRH;
859 rocketMode = info->flags & ROCKET_MODE_MASK;
861 if ((info->flags & ROCKET_RTS_TOGGLE)
862 || (rocketMode == ROCKET_MODE_RS485))
867 sSetRTS(&info->channel);
869 if (cp->CtlP->boardType == ROCKET_TYPE_PC104) {
870 switch (rocketMode) {
871 case ROCKET_MODE_RS485:
872 sSetInterfaceMode(cp, InterfaceModeRS485);
874 case ROCKET_MODE_RS422:
875 sSetInterfaceMode(cp, InterfaceModeRS422);
877 case ROCKET_MODE_RS232:
879 if (info->flags & ROCKET_RTS_TOGGLE)
880 sSetInterfaceMode(cp, InterfaceModeRS232T);
882 sSetInterfaceMode(cp, InterfaceModeRS232);
888 /* info->count is considered critical, protected by spinlocks. */
889 static int block_til_ready(struct tty_struct *tty, struct file *filp,
892 DECLARE_WAITQUEUE(wait, current);
894 int do_clocal = 0, extra_count = 0;
898 * If the device is in the middle of being closed, then block
899 * until it's done, and then try again.
901 if (tty_hung_up_p(filp))
902 return ((info->flags & ROCKET_HUP_NOTIFY) ? -EAGAIN : -ERESTARTSYS);
903 if (info->flags & ROCKET_CLOSING) {
904 interruptible_sleep_on(&info->close_wait);
905 return ((info->flags & ROCKET_HUP_NOTIFY) ? -EAGAIN : -ERESTARTSYS);
909 * If non-blocking mode is set, or the port is not enabled,
910 * then make the check up front and then exit.
912 if ((filp->f_flags & O_NONBLOCK) || (tty->flags & (1 << TTY_IO_ERROR))) {
913 info->flags |= ROCKET_NORMAL_ACTIVE;
916 if (tty->termios->c_cflag & CLOCAL)
920 * Block waiting for the carrier detect and the line to become free. While we are in
921 * this loop, info->count is dropped by one, so that rp_close() knows when to free things.
922 * We restore it upon exit, either normal or abnormal.
925 add_wait_queue(&info->open_wait, &wait);
926 #ifdef ROCKET_DEBUG_OPEN
927 printk(KERN_INFO "block_til_ready before block: ttyR%d, count = %d\n", info->line, info->count);
929 spin_lock_irqsave(&info->slock, flags);
931 #ifdef ROCKET_DISABLE_SIMUSAGE
932 info->flags |= ROCKET_NORMAL_ACTIVE;
934 if (!tty_hung_up_p(filp)) {
939 info->blocked_open++;
941 spin_unlock_irqrestore(&info->slock, flags);
944 if (tty->termios->c_cflag & CBAUD) {
945 sSetDTR(&info->channel);
946 sSetRTS(&info->channel);
948 set_current_state(TASK_INTERRUPTIBLE);
949 if (tty_hung_up_p(filp) || !(info->flags & ROCKET_INITIALIZED)) {
950 if (info->flags & ROCKET_HUP_NOTIFY)
953 retval = -ERESTARTSYS;
956 if (!(info->flags & ROCKET_CLOSING) && (do_clocal || (sGetChanStatusLo(&info->channel) & CD_ACT)))
958 if (signal_pending(current)) {
959 retval = -ERESTARTSYS;
962 #ifdef ROCKET_DEBUG_OPEN
963 printk(KERN_INFO "block_til_ready blocking: ttyR%d, count = %d, flags=0x%0x\n",
964 info->line, info->count, info->flags);
966 schedule(); /* Don't hold spinlock here, will hang PC */
968 current->state = TASK_RUNNING;
969 remove_wait_queue(&info->open_wait, &wait);
971 spin_lock_irqsave(&info->slock, flags);
975 info->blocked_open--;
977 spin_unlock_irqrestore(&info->slock, flags);
979 #ifdef ROCKET_DEBUG_OPEN
980 printk(KERN_INFO "block_til_ready after blocking: ttyR%d, count = %d\n",
981 info->line, info->count);
985 info->flags |= ROCKET_NORMAL_ACTIVE;
990 * Exception handler that opens a serial port. Creates xmit_buf storage, fills in
991 * port's r_port struct. Initializes the port hardware.
993 static int rp_open(struct tty_struct *tty, struct file *filp)
996 int line = 0, retval;
1000 line = TTY_GET_LINE(tty);
1001 if ((line < 0) || (line >= MAX_RP_PORTS) || ((info = rp_table[line]) == NULL))
1004 page = __get_free_page(GFP_KERNEL);
1008 if (info->flags & ROCKET_CLOSING) {
1009 interruptible_sleep_on(&info->close_wait);
1011 return ((info->flags & ROCKET_HUP_NOTIFY) ? -EAGAIN : -ERESTARTSYS);
1015 * We must not sleep from here until the port is marked fully in use.
1020 info->xmit_buf = (unsigned char *) page;
1022 tty->driver_data = info;
1025 if (info->count++ == 0) {
1026 atomic_inc(&rp_num_ports_open);
1028 #ifdef ROCKET_DEBUG_OPEN
1029 printk(KERN_INFO "rocket mod++ = %d...", atomic_read(&rp_num_ports_open));
1032 #ifdef ROCKET_DEBUG_OPEN
1033 printk(KERN_INFO "rp_open ttyR%d, count=%d\n", info->line, info->count);
1037 * Info->count is now 1; so it's safe to sleep now.
1039 info->session = current->signal->session;
1040 info->pgrp = process_group(current);
1042 if ((info->flags & ROCKET_INITIALIZED) == 0) {
1043 cp = &info->channel;
1044 sSetRxTrigger(cp, TRIG_1);
1045 if (sGetChanStatus(cp) & CD_ACT)
1046 info->cd_status = 1;
1048 info->cd_status = 0;
1049 sDisRxStatusMode(cp);
1053 sEnInterrupts(cp, (TXINT_EN | MCINT_EN | RXINT_EN | SRCINT_EN | CHANINT_EN));
1054 sSetRxTrigger(cp, TRIG_1);
1057 sDisRxStatusMode(cp);
1061 sDisTxSoftFlowCtl(cp);
1066 info->flags |= ROCKET_INITIALIZED;
1069 * Set up the tty->alt_speed kludge
1071 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_HI)
1072 info->tty->alt_speed = 57600;
1073 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_VHI)
1074 info->tty->alt_speed = 115200;
1075 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_SHI)
1076 info->tty->alt_speed = 230400;
1077 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_WARP)
1078 info->tty->alt_speed = 460800;
1080 configure_r_port(info, NULL);
1081 if (tty->termios->c_cflag & CBAUD) {
1086 /* Starts (or resets) the maint polling loop */
1087 mod_timer(&rocket_timer, jiffies + POLL_PERIOD);
1089 retval = block_til_ready(tty, filp, info);
1091 #ifdef ROCKET_DEBUG_OPEN
1092 printk(KERN_INFO "rp_open returning after block_til_ready with %d\n", retval);
1100 * Exception handler that closes a serial port. info->count is considered critical.
1102 static void rp_close(struct tty_struct *tty, struct file *filp)
1104 struct r_port *info = (struct r_port *) tty->driver_data;
1105 unsigned long flags;
1109 if (rocket_paranoia_check(info, "rp_close"))
1112 #ifdef ROCKET_DEBUG_OPEN
1113 printk(KERN_INFO "rp_close ttyR%d, count = %d\n", info->line, info->count);
1116 if (tty_hung_up_p(filp))
1118 spin_lock_irqsave(&info->slock, flags);
1120 if ((tty->count == 1) && (info->count != 1)) {
1122 * Uh, oh. tty->count is 1, which means that the tty
1123 * structure will be freed. Info->count should always
1124 * be one in these conditions. If it's greater than
1125 * one, we've got real problems, since it means the
1126 * serial port won't be shutdown.
1128 printk(KERN_INFO "rp_close: bad serial port count; tty->count is 1, "
1129 "info->count is %d\n", info->count);
1132 if (--info->count < 0) {
1133 printk(KERN_INFO "rp_close: bad serial port count for ttyR%d: %d\n",
1134 info->line, info->count);
1138 spin_unlock_irqrestore(&info->slock, flags);
1141 info->flags |= ROCKET_CLOSING;
1142 spin_unlock_irqrestore(&info->slock, flags);
1144 cp = &info->channel;
1147 * Notify the line discpline to only process XON/XOFF characters
1152 * If transmission was throttled by the application request,
1153 * just flush the xmit buffer.
1155 if (tty->flow_stopped)
1156 rp_flush_buffer(tty);
1159 * Wait for the transmit buffer to clear
1161 if (info->closing_wait != ROCKET_CLOSING_WAIT_NONE)
1162 tty_wait_until_sent(tty, info->closing_wait);
1164 * Before we drop DTR, make sure the UART transmitter
1165 * has completely drained; this is especially
1166 * important if there is a transmit FIFO!
1168 timeout = (sGetTxCnt(cp) + 1) * HZ / info->cps;
1171 rp_wait_until_sent(tty, timeout);
1172 clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
1175 sDisInterrupts(cp, (TXINT_EN | MCINT_EN | RXINT_EN | SRCINT_EN | CHANINT_EN));
1177 sDisTxSoftFlowCtl(cp);
1185 if (TTY_DRIVER_FLUSH_BUFFER_EXISTS(tty))
1186 TTY_DRIVER_FLUSH_BUFFER(tty);
1188 tty_ldisc_flush(tty);
1190 clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
1192 if (info->blocked_open) {
1193 if (info->close_delay) {
1194 msleep_interruptible(jiffies_to_msecs(info->close_delay));
1196 wake_up_interruptible(&info->open_wait);
1198 if (info->xmit_buf) {
1199 free_page((unsigned long) info->xmit_buf);
1200 info->xmit_buf = NULL;
1203 info->flags &= ~(ROCKET_INITIALIZED | ROCKET_CLOSING | ROCKET_NORMAL_ACTIVE);
1205 wake_up_interruptible(&info->close_wait);
1206 atomic_dec(&rp_num_ports_open);
1208 #ifdef ROCKET_DEBUG_OPEN
1209 printk(KERN_INFO "rocket mod-- = %d...", atomic_read(&rp_num_ports_open));
1210 printk(KERN_INFO "rp_close ttyR%d complete shutdown\n", info->line);
1215 static void rp_set_termios(struct tty_struct *tty,
1216 struct termios *old_termios)
1218 struct r_port *info = (struct r_port *) tty->driver_data;
1222 if (rocket_paranoia_check(info, "rp_set_termios"))
1225 cflag = tty->termios->c_cflag;
1227 if (cflag == old_termios->c_cflag)
1231 * This driver doesn't support CS5 or CS6
1233 if (((cflag & CSIZE) == CS5) || ((cflag & CSIZE) == CS6))
1234 tty->termios->c_cflag =
1235 ((cflag & ~CSIZE) | (old_termios->c_cflag & CSIZE));
1237 configure_r_port(info, old_termios);
1239 cp = &info->channel;
1241 /* Handle transition to B0 status */
1242 if ((old_termios->c_cflag & CBAUD) && !(tty->termios->c_cflag & CBAUD)) {
1247 /* Handle transition away from B0 status */
1248 if (!(old_termios->c_cflag & CBAUD) && (tty->termios->c_cflag & CBAUD)) {
1249 if (!tty->hw_stopped || !(tty->termios->c_cflag & CRTSCTS))
1254 if ((old_termios->c_cflag & CRTSCTS) && !(tty->termios->c_cflag & CRTSCTS)) {
1255 tty->hw_stopped = 0;
1260 static void rp_break(struct tty_struct *tty, int break_state)
1262 struct r_port *info = (struct r_port *) tty->driver_data;
1263 unsigned long flags;
1265 if (rocket_paranoia_check(info, "rp_break"))
1268 spin_lock_irqsave(&info->slock, flags);
1269 if (break_state == -1)
1270 sSendBreak(&info->channel);
1272 sClrBreak(&info->channel);
1273 spin_unlock_irqrestore(&info->slock, flags);
1277 * sGetChanRI used to be a macro in rocket_int.h. When the functionality for
1278 * the UPCI boards was added, it was decided to make this a function because
1279 * the macro was getting too complicated. All cases except the first one
1280 * (UPCIRingInd) are taken directly from the original macro.
1282 static int sGetChanRI(CHANNEL_T * ChP)
1284 CONTROLLER_t *CtlP = ChP->CtlP;
1285 int ChanNum = ChP->ChanNum;
1288 if (CtlP->UPCIRingInd)
1289 RingInd = !(sInB(CtlP->UPCIRingInd) & sBitMapSetTbl[ChanNum]);
1290 else if (CtlP->AltChanRingIndicator)
1291 RingInd = sInB((ByteIO_t) (ChP->ChanStat + 8)) & DSR_ACT;
1292 else if (CtlP->boardType == ROCKET_TYPE_PC104)
1293 RingInd = !(sInB(CtlP->AiopIO[3]) & sBitMapSetTbl[ChanNum]);
1298 /********************************************************************************************/
1299 /* Here are the routines used by rp_ioctl. These are all called from exception handlers. */
1302 * Returns the state of the serial modem control lines. These next 2 functions
1303 * are the way kernel versions > 2.5 handle modem control lines rather than IOCTLs.
1305 static int rp_tiocmget(struct tty_struct *tty, struct file *file)
1307 struct r_port *info = (struct r_port *)tty->driver_data;
1308 unsigned int control, result, ChanStatus;
1310 ChanStatus = sGetChanStatusLo(&info->channel);
1311 control = info->channel.TxControl[3];
1312 result = ((control & SET_RTS) ? TIOCM_RTS : 0) |
1313 ((control & SET_DTR) ? TIOCM_DTR : 0) |
1314 ((ChanStatus & CD_ACT) ? TIOCM_CAR : 0) |
1315 (sGetChanRI(&info->channel) ? TIOCM_RNG : 0) |
1316 ((ChanStatus & DSR_ACT) ? TIOCM_DSR : 0) |
1317 ((ChanStatus & CTS_ACT) ? TIOCM_CTS : 0);
1323 * Sets the modem control lines
1325 static int rp_tiocmset(struct tty_struct *tty, struct file *file,
1326 unsigned int set, unsigned int clear)
1328 struct r_port *info = (struct r_port *)tty->driver_data;
1330 if (set & TIOCM_RTS)
1331 info->channel.TxControl[3] |= SET_RTS;
1332 if (set & TIOCM_DTR)
1333 info->channel.TxControl[3] |= SET_DTR;
1334 if (clear & TIOCM_RTS)
1335 info->channel.TxControl[3] &= ~SET_RTS;
1336 if (clear & TIOCM_DTR)
1337 info->channel.TxControl[3] &= ~SET_DTR;
1339 sOutDW(info->channel.IndexAddr, *(DWord_t *) & (info->channel.TxControl[0]));
1343 static int get_config(struct r_port *info, struct rocket_config __user *retinfo)
1345 struct rocket_config tmp;
1349 memset(&tmp, 0, sizeof (tmp));
1350 tmp.line = info->line;
1351 tmp.flags = info->flags;
1352 tmp.close_delay = info->close_delay;
1353 tmp.closing_wait = info->closing_wait;
1354 tmp.port = rcktpt_io_addr[(info->line >> 5) & 3];
1356 if (copy_to_user(retinfo, &tmp, sizeof (*retinfo)))
1361 static int set_config(struct r_port *info, struct rocket_config __user *new_info)
1363 struct rocket_config new_serial;
1365 if (copy_from_user(&new_serial, new_info, sizeof (new_serial)))
1368 if (!capable(CAP_SYS_ADMIN))
1370 if ((new_serial.flags & ~ROCKET_USR_MASK) != (info->flags & ~ROCKET_USR_MASK))
1372 info->flags = ((info->flags & ~ROCKET_USR_MASK) | (new_serial.flags & ROCKET_USR_MASK));
1373 configure_r_port(info, NULL);
1377 info->flags = ((info->flags & ~ROCKET_FLAGS) | (new_serial.flags & ROCKET_FLAGS));
1378 info->close_delay = new_serial.close_delay;
1379 info->closing_wait = new_serial.closing_wait;
1381 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_HI)
1382 info->tty->alt_speed = 57600;
1383 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_VHI)
1384 info->tty->alt_speed = 115200;
1385 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_SHI)
1386 info->tty->alt_speed = 230400;
1387 if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_WARP)
1388 info->tty->alt_speed = 460800;
1390 configure_r_port(info, NULL);
1395 * This function fills in a rocket_ports struct with information
1396 * about what boards/ports are in the system. This info is passed
1397 * to user space. See setrocket.c where the info is used to create
1398 * the /dev/ttyRx ports.
1400 static int get_ports(struct r_port *info, struct rocket_ports __user *retports)
1402 struct rocket_ports tmp;
1407 memset(&tmp, 0, sizeof (tmp));
1408 tmp.tty_major = rocket_driver->major;
1410 for (board = 0; board < 4; board++) {
1411 tmp.rocketModel[board].model = rocketModel[board].model;
1412 strcpy(tmp.rocketModel[board].modelString, rocketModel[board].modelString);
1413 tmp.rocketModel[board].numPorts = rocketModel[board].numPorts;
1414 tmp.rocketModel[board].loadrm2 = rocketModel[board].loadrm2;
1415 tmp.rocketModel[board].startingPortNumber = rocketModel[board].startingPortNumber;
1417 if (copy_to_user(retports, &tmp, sizeof (*retports)))
1422 static int reset_rm2(struct r_port *info, void __user *arg)
1426 if (copy_from_user(&reset, arg, sizeof (int)))
1431 if (rcktpt_type[info->board] != ROCKET_TYPE_MODEMII &&
1432 rcktpt_type[info->board] != ROCKET_TYPE_MODEMIII)
1435 if (info->ctlp->BusType == isISA)
1436 sModemReset(info->ctlp, info->chan, reset);
1438 sPCIModemReset(info->ctlp, info->chan, reset);
1443 static int get_version(struct r_port *info, struct rocket_version __user *retvers)
1445 if (copy_to_user(retvers, &driver_version, sizeof (*retvers)))
1450 /* IOCTL call handler into the driver */
1451 static int rp_ioctl(struct tty_struct *tty, struct file *file,
1452 unsigned int cmd, unsigned long arg)
1454 struct r_port *info = (struct r_port *) tty->driver_data;
1455 void __user *argp = (void __user *)arg;
1457 if (cmd != RCKP_GET_PORTS && rocket_paranoia_check(info, "rp_ioctl"))
1461 case RCKP_GET_STRUCT:
1462 if (copy_to_user(argp, info, sizeof (struct r_port)))
1465 case RCKP_GET_CONFIG:
1466 return get_config(info, argp);
1467 case RCKP_SET_CONFIG:
1468 return set_config(info, argp);
1469 case RCKP_GET_PORTS:
1470 return get_ports(info, argp);
1471 case RCKP_RESET_RM2:
1472 return reset_rm2(info, argp);
1473 case RCKP_GET_VERSION:
1474 return get_version(info, argp);
1476 return -ENOIOCTLCMD;
1481 static void rp_send_xchar(struct tty_struct *tty, char ch)
1483 struct r_port *info = (struct r_port *) tty->driver_data;
1486 if (rocket_paranoia_check(info, "rp_send_xchar"))
1489 cp = &info->channel;
1491 sWriteTxPrioByte(cp, ch);
1493 sWriteTxByte(sGetTxRxDataIO(cp), ch);
1496 static void rp_throttle(struct tty_struct *tty)
1498 struct r_port *info = (struct r_port *) tty->driver_data;
1501 #ifdef ROCKET_DEBUG_THROTTLE
1502 printk(KERN_INFO "throttle %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, STOP_CHAR(tty));
1513 sClrRTS(&info->channel);
1516 static void rp_unthrottle(struct tty_struct *tty)
1518 struct r_port *info = (struct r_port *) tty->driver_data;
1520 #ifdef ROCKET_DEBUG_THROTTLE
1521 printk(KERN_INFO "unthrottle %s: %d....\n", tty->name,
1522 tty->ldisc.chars_in_buffer(tty));
1525 if (rocket_paranoia_check(info, "rp_throttle"))
1528 cp = &info->channel;
1530 rp_send_xchar(tty, START_CHAR(tty));
1532 sSetRTS(&info->channel);
1536 * ------------------------------------------------------------
1537 * rp_stop() and rp_start()
1539 * This routines are called before setting or resetting tty->stopped.
1540 * They enable or disable transmitter interrupts, as necessary.
1541 * ------------------------------------------------------------
1543 static void rp_stop(struct tty_struct *tty)
1545 struct r_port *info = (struct r_port *) tty->driver_data;
1547 #ifdef ROCKET_DEBUG_FLOW
1548 printk(KERN_INFO "stop %s: %d %d....\n", tty->name,
1549 info->xmit_cnt, info->xmit_fifo_room);
1552 if (rocket_paranoia_check(info, "rp_stop"))
1555 if (sGetTxCnt(&info->channel))
1556 sDisTransmit(&info->channel);
1559 static void rp_start(struct tty_struct *tty)
1561 struct r_port *info = (struct r_port *) tty->driver_data;
1563 #ifdef ROCKET_DEBUG_FLOW
1564 printk(KERN_INFO "start %s: %d %d....\n", tty->name,
1565 info->xmit_cnt, info->xmit_fifo_room);
1568 if (rocket_paranoia_check(info, "rp_stop"))
1571 sEnTransmit(&info->channel);
1572 set_bit((info->aiop * 8) + info->chan,
1573 (void *) &xmit_flags[info->board]);
1577 * rp_wait_until_sent() --- wait until the transmitter is empty
1579 static void rp_wait_until_sent(struct tty_struct *tty, int timeout)
1581 struct r_port *info = (struct r_port *) tty->driver_data;
1583 unsigned long orig_jiffies;
1584 int check_time, exit_time;
1587 if (rocket_paranoia_check(info, "rp_wait_until_sent"))
1590 cp = &info->channel;
1592 orig_jiffies = jiffies;
1593 #ifdef ROCKET_DEBUG_WAIT_UNTIL_SENT
1594 printk(KERN_INFO "In RP_wait_until_sent(%d) (jiff=%lu)...", timeout,
1596 printk(KERN_INFO "cps=%d...", info->cps);
1599 txcnt = sGetTxCnt(cp);
1601 if (sGetChanStatusLo(cp) & TXSHRMT)
1603 check_time = (HZ / info->cps) / 5;
1605 check_time = HZ * txcnt / info->cps;
1608 exit_time = orig_jiffies + timeout - jiffies;
1611 if (exit_time < check_time)
1612 check_time = exit_time;
1614 if (check_time == 0)
1616 #ifdef ROCKET_DEBUG_WAIT_UNTIL_SENT
1617 printk(KERN_INFO "txcnt = %d (jiff=%lu,check=%d)...", txcnt, jiffies, check_time);
1619 msleep_interruptible(jiffies_to_msecs(check_time));
1620 if (signal_pending(current))
1623 current->state = TASK_RUNNING;
1624 #ifdef ROCKET_DEBUG_WAIT_UNTIL_SENT
1625 printk(KERN_INFO "txcnt = %d (jiff=%lu)...done\n", txcnt, jiffies);
1630 * rp_hangup() --- called by tty_hangup() when a hangup is signaled.
1632 static void rp_hangup(struct tty_struct *tty)
1635 struct r_port *info = (struct r_port *) tty->driver_data;
1637 if (rocket_paranoia_check(info, "rp_hangup"))
1640 #if (defined(ROCKET_DEBUG_OPEN) || defined(ROCKET_DEBUG_HANGUP))
1641 printk(KERN_INFO "rp_hangup of ttyR%d...", info->line);
1643 rp_flush_buffer(tty);
1644 if (info->flags & ROCKET_CLOSING)
1647 atomic_dec(&rp_num_ports_open);
1648 clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
1651 info->flags &= ~ROCKET_NORMAL_ACTIVE;
1654 cp = &info->channel;
1657 sDisInterrupts(cp, (TXINT_EN | MCINT_EN | RXINT_EN | SRCINT_EN | CHANINT_EN));
1659 sDisTxSoftFlowCtl(cp);
1661 info->flags &= ~ROCKET_INITIALIZED;
1663 wake_up_interruptible(&info->open_wait);
1667 * Exception handler - write char routine. The RocketPort driver uses a
1668 * double-buffering strategy, with the twist that if the in-memory CPU
1669 * buffer is empty, and there's space in the transmit FIFO, the
1670 * writing routines will write directly to transmit FIFO.
1671 * Write buffer and counters protected by spinlocks
1673 static void rp_put_char(struct tty_struct *tty, unsigned char ch)
1675 struct r_port *info = (struct r_port *) tty->driver_data;
1677 unsigned long flags;
1679 if (rocket_paranoia_check(info, "rp_put_char"))
1682 /* Grab the port write semaphore, locking out other processes that try to write to this port */
1683 down(&info->write_sem);
1685 #ifdef ROCKET_DEBUG_WRITE
1686 printk(KERN_INFO "rp_put_char %c...", ch);
1689 spin_lock_irqsave(&info->slock, flags);
1690 cp = &info->channel;
1692 if (!tty->stopped && !tty->hw_stopped && info->xmit_fifo_room == 0)
1693 info->xmit_fifo_room = TXFIFO_SIZE - sGetTxCnt(cp);
1695 if (tty->stopped || tty->hw_stopped || info->xmit_fifo_room == 0 || info->xmit_cnt != 0) {
1696 info->xmit_buf[info->xmit_head++] = ch;
1697 info->xmit_head &= XMIT_BUF_SIZE - 1;
1699 set_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
1701 sOutB(sGetTxRxDataIO(cp), ch);
1702 info->xmit_fifo_room--;
1704 spin_unlock_irqrestore(&info->slock, flags);
1705 up(&info->write_sem);
1709 * Exception handler - write routine, called when user app writes to the device.
1710 * A per port write semaphore is used to protect from another process writing to
1711 * this port at the same time. This other process could be running on the other CPU
1712 * or get control of the CPU if the copy_from_user() blocks due to a page fault (swapped out).
1713 * Spinlocks protect the info xmit members.
1715 static int rp_write(struct tty_struct *tty,
1716 const unsigned char *buf, int count)
1718 struct r_port *info = (struct r_port *) tty->driver_data;
1720 const unsigned char *b;
1722 unsigned long flags;
1724 if (count <= 0 || rocket_paranoia_check(info, "rp_write"))
1727 down_interruptible(&info->write_sem);
1729 #ifdef ROCKET_DEBUG_WRITE
1730 printk(KERN_INFO "rp_write %d chars...", count);
1732 cp = &info->channel;
1734 if (!tty->stopped && !tty->hw_stopped && info->xmit_fifo_room < count)
1735 info->xmit_fifo_room = TXFIFO_SIZE - sGetTxCnt(cp);
1738 * If the write queue for the port is empty, and there is FIFO space, stuff bytes
1739 * into FIFO. Use the write queue for temp storage.
1741 if (!tty->stopped && !tty->hw_stopped && info->xmit_cnt == 0 && info->xmit_fifo_room > 0) {
1742 c = min(count, info->xmit_fifo_room);
1745 /* Push data into FIFO, 2 bytes at a time */
1746 sOutStrW(sGetTxRxDataIO(cp), (unsigned short *) b, c / 2);
1748 /* If there is a byte remaining, write it */
1750 sOutB(sGetTxRxDataIO(cp), b[c - 1]);
1756 spin_lock_irqsave(&info->slock, flags);
1757 info->xmit_fifo_room -= c;
1758 spin_unlock_irqrestore(&info->slock, flags);
1761 /* If count is zero, we wrote it all and are done */
1765 /* Write remaining data into the port's xmit_buf */
1767 if (info->tty == 0) /* Seemingly obligatory check... */
1770 c = min(count, min(XMIT_BUF_SIZE - info->xmit_cnt - 1, XMIT_BUF_SIZE - info->xmit_head));
1775 memcpy(info->xmit_buf + info->xmit_head, b, c);
1777 spin_lock_irqsave(&info->slock, flags);
1779 (info->xmit_head + c) & (XMIT_BUF_SIZE - 1);
1780 info->xmit_cnt += c;
1781 spin_unlock_irqrestore(&info->slock, flags);
1788 if ((retval > 0) && !tty->stopped && !tty->hw_stopped)
1789 set_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
1792 if (info->xmit_cnt < WAKEUP_CHARS) {
1794 wake_up_interruptible(&tty->write_wait);
1795 #ifdef ROCKETPORT_HAVE_POLL_WAIT
1796 wake_up_interruptible(&tty->poll_wait);
1799 up(&info->write_sem);
1804 * Return the number of characters that can be sent. We estimate
1805 * only using the in-memory transmit buffer only, and ignore the
1806 * potential space in the transmit FIFO.
1808 static int rp_write_room(struct tty_struct *tty)
1810 struct r_port *info = (struct r_port *) tty->driver_data;
1813 if (rocket_paranoia_check(info, "rp_write_room"))
1816 ret = XMIT_BUF_SIZE - info->xmit_cnt - 1;
1819 #ifdef ROCKET_DEBUG_WRITE
1820 printk(KERN_INFO "rp_write_room returns %d...", ret);
1826 * Return the number of characters in the buffer. Again, this only
1827 * counts those characters in the in-memory transmit buffer.
1829 static int rp_chars_in_buffer(struct tty_struct *tty)
1831 struct r_port *info = (struct r_port *) tty->driver_data;
1834 if (rocket_paranoia_check(info, "rp_chars_in_buffer"))
1837 cp = &info->channel;
1839 #ifdef ROCKET_DEBUG_WRITE
1840 printk(KERN_INFO "rp_chars_in_buffer returns %d...", info->xmit_cnt);
1842 return info->xmit_cnt;
1846 * Flushes the TX fifo for a port, deletes data in the xmit_buf stored in the
1847 * r_port struct for the port. Note that spinlock are used to protect info members,
1848 * do not call this function if the spinlock is already held.
1850 static void rp_flush_buffer(struct tty_struct *tty)
1852 struct r_port *info = (struct r_port *) tty->driver_data;
1854 unsigned long flags;
1856 if (rocket_paranoia_check(info, "rp_flush_buffer"))
1859 spin_lock_irqsave(&info->slock, flags);
1860 info->xmit_cnt = info->xmit_head = info->xmit_tail = 0;
1861 spin_unlock_irqrestore(&info->slock, flags);
1863 wake_up_interruptible(&tty->write_wait);
1864 #ifdef ROCKETPORT_HAVE_POLL_WAIT
1865 wake_up_interruptible(&tty->poll_wait);
1869 cp = &info->channel;
1876 * Called when a PCI card is found. Retrieves and stores model information,
1877 * init's aiopic and serial port hardware.
1878 * Inputs: i is the board number (0-n)
1880 static __init int register_PCI(int i, struct pci_dev *dev)
1882 int num_aiops, aiop, max_num_aiops, num_chan, chan;
1883 unsigned int aiopio[MAX_AIOPS_PER_BOARD];
1884 char *str, *board_type;
1888 int altChanRingIndicator = 0;
1889 int ports_per_aiop = 8;
1891 unsigned int class_rev;
1892 WordIO_t ConfigIO = 0;
1893 ByteIO_t UPCIRingInd = 0;
1895 if (!dev || pci_enable_device(dev))
1898 rcktpt_io_addr[i] = pci_resource_start(dev, 0);
1899 ret = pci_read_config_dword(dev, PCI_CLASS_REVISION, &class_rev);
1902 printk(KERN_INFO " Error during register_PCI(), unable to read config dword \n");
1906 rcktpt_type[i] = ROCKET_TYPE_NORMAL;
1907 rocketModel[i].loadrm2 = 0;
1908 rocketModel[i].startingPortNumber = nextLineNumber;
1910 /* Depending on the model, set up some config variables */
1911 switch (dev->device) {
1912 case PCI_DEVICE_ID_RP4QUAD:
1916 rocketModel[i].model = MODEL_RP4QUAD;
1917 strcpy(rocketModel[i].modelString, "RocketPort 4 port w/quad cable");
1918 rocketModel[i].numPorts = 4;
1920 case PCI_DEVICE_ID_RP8OCTA:
1923 rocketModel[i].model = MODEL_RP8OCTA;
1924 strcpy(rocketModel[i].modelString, "RocketPort 8 port w/octa cable");
1925 rocketModel[i].numPorts = 8;
1927 case PCI_DEVICE_ID_URP8OCTA:
1930 rocketModel[i].model = MODEL_UPCI_RP8OCTA;
1931 strcpy(rocketModel[i].modelString, "RocketPort UPCI 8 port w/octa cable");
1932 rocketModel[i].numPorts = 8;
1934 case PCI_DEVICE_ID_RP8INTF:
1937 rocketModel[i].model = MODEL_RP8INTF;
1938 strcpy(rocketModel[i].modelString, "RocketPort 8 port w/external I/F");
1939 rocketModel[i].numPorts = 8;
1941 case PCI_DEVICE_ID_URP8INTF:
1944 rocketModel[i].model = MODEL_UPCI_RP8INTF;
1945 strcpy(rocketModel[i].modelString, "RocketPort UPCI 8 port w/external I/F");
1946 rocketModel[i].numPorts = 8;
1948 case PCI_DEVICE_ID_RP8J:
1951 rocketModel[i].model = MODEL_RP8J;
1952 strcpy(rocketModel[i].modelString, "RocketPort 8 port w/RJ11 connectors");
1953 rocketModel[i].numPorts = 8;
1955 case PCI_DEVICE_ID_RP4J:
1959 rocketModel[i].model = MODEL_RP4J;
1960 strcpy(rocketModel[i].modelString, "RocketPort 4 port w/RJ45 connectors");
1961 rocketModel[i].numPorts = 4;
1963 case PCI_DEVICE_ID_RP8SNI:
1964 str = "8 (DB78 Custom)";
1966 rocketModel[i].model = MODEL_RP8SNI;
1967 strcpy(rocketModel[i].modelString, "RocketPort 8 port w/ custom DB78");
1968 rocketModel[i].numPorts = 8;
1970 case PCI_DEVICE_ID_RP16SNI:
1971 str = "16 (DB78 Custom)";
1973 rocketModel[i].model = MODEL_RP16SNI;
1974 strcpy(rocketModel[i].modelString, "RocketPort 16 port w/ custom DB78");
1975 rocketModel[i].numPorts = 16;
1977 case PCI_DEVICE_ID_RP16INTF:
1980 rocketModel[i].model = MODEL_RP16INTF;
1981 strcpy(rocketModel[i].modelString, "RocketPort 16 port w/external I/F");
1982 rocketModel[i].numPorts = 16;
1984 case PCI_DEVICE_ID_URP16INTF:
1987 rocketModel[i].model = MODEL_UPCI_RP16INTF;
1988 strcpy(rocketModel[i].modelString, "RocketPort UPCI 16 port w/external I/F");
1989 rocketModel[i].numPorts = 16;
1991 case PCI_DEVICE_ID_CRP16INTF:
1994 rocketModel[i].model = MODEL_CPCI_RP16INTF;
1995 strcpy(rocketModel[i].modelString, "RocketPort Compact PCI 16 port w/external I/F");
1996 rocketModel[i].numPorts = 16;
1998 case PCI_DEVICE_ID_RP32INTF:
2001 rocketModel[i].model = MODEL_RP32INTF;
2002 strcpy(rocketModel[i].modelString, "RocketPort 32 port w/external I/F");
2003 rocketModel[i].numPorts = 32;
2005 case PCI_DEVICE_ID_URP32INTF:
2008 rocketModel[i].model = MODEL_UPCI_RP32INTF;
2009 strcpy(rocketModel[i].modelString, "RocketPort UPCI 32 port w/external I/F");
2010 rocketModel[i].numPorts = 32;
2012 case PCI_DEVICE_ID_RPP4:
2013 str = "Plus Quadcable";
2016 altChanRingIndicator++;
2018 rocketModel[i].model = MODEL_RPP4;
2019 strcpy(rocketModel[i].modelString, "RocketPort Plus 4 port");
2020 rocketModel[i].numPorts = 4;
2022 case PCI_DEVICE_ID_RPP8:
2023 str = "Plus Octacable";
2026 altChanRingIndicator++;
2028 rocketModel[i].model = MODEL_RPP8;
2029 strcpy(rocketModel[i].modelString, "RocketPort Plus 8 port");
2030 rocketModel[i].numPorts = 8;
2032 case PCI_DEVICE_ID_RP2_232:
2033 str = "Plus 2 (RS-232)";
2036 altChanRingIndicator++;
2038 rocketModel[i].model = MODEL_RP2_232;
2039 strcpy(rocketModel[i].modelString, "RocketPort Plus 2 port RS232");
2040 rocketModel[i].numPorts = 2;
2042 case PCI_DEVICE_ID_RP2_422:
2043 str = "Plus 2 (RS-422)";
2046 altChanRingIndicator++;
2048 rocketModel[i].model = MODEL_RP2_422;
2049 strcpy(rocketModel[i].modelString, "RocketPort Plus 2 port RS422");
2050 rocketModel[i].numPorts = 2;
2052 case PCI_DEVICE_ID_RP6M:
2058 /* If class_rev is 1, the rocketmodem flash must be loaded. If it is 2 it is a "socketed" version. */
2059 if ((class_rev & 0xFF) == 1) {
2060 rcktpt_type[i] = ROCKET_TYPE_MODEMII;
2061 rocketModel[i].loadrm2 = 1;
2063 rcktpt_type[i] = ROCKET_TYPE_MODEM;
2066 rocketModel[i].model = MODEL_RP6M;
2067 strcpy(rocketModel[i].modelString, "RocketModem 6 port");
2068 rocketModel[i].numPorts = 6;
2070 case PCI_DEVICE_ID_RP4M:
2074 if ((class_rev & 0xFF) == 1) {
2075 rcktpt_type[i] = ROCKET_TYPE_MODEMII;
2076 rocketModel[i].loadrm2 = 1;
2078 rcktpt_type[i] = ROCKET_TYPE_MODEM;
2081 rocketModel[i].model = MODEL_RP4M;
2082 strcpy(rocketModel[i].modelString, "RocketModem 4 port");
2083 rocketModel[i].numPorts = 4;
2086 str = "(unknown/unsupported)";
2092 * Check for UPCI boards.
2095 switch (dev->device) {
2096 case PCI_DEVICE_ID_URP32INTF:
2097 case PCI_DEVICE_ID_URP8INTF:
2098 case PCI_DEVICE_ID_URP16INTF:
2099 case PCI_DEVICE_ID_CRP16INTF:
2100 case PCI_DEVICE_ID_URP8OCTA:
2101 rcktpt_io_addr[i] = pci_resource_start(dev, 2);
2102 ConfigIO = pci_resource_start(dev, 1);
2103 if (dev->device == PCI_DEVICE_ID_URP8OCTA) {
2104 UPCIRingInd = rcktpt_io_addr[i] + _PCI_9030_RING_IND;
2107 * Check for octa or quad cable.
2110 (sInW(ConfigIO + _PCI_9030_GPIO_CTRL) &
2111 PCI_GPIO_CTRL_8PORT)) {
2114 rocketModel[i].numPorts = 4;
2118 case PCI_DEVICE_ID_UPCI_RM3_8PORT:
2121 rocketModel[i].model = MODEL_UPCI_RM3_8PORT;
2122 strcpy(rocketModel[i].modelString, "RocketModem III 8 port");
2123 rocketModel[i].numPorts = 8;
2124 rcktpt_io_addr[i] = pci_resource_start(dev, 2);
2125 UPCIRingInd = rcktpt_io_addr[i] + _PCI_9030_RING_IND;
2126 ConfigIO = pci_resource_start(dev, 1);
2127 rcktpt_type[i] = ROCKET_TYPE_MODEMIII;
2129 case PCI_DEVICE_ID_UPCI_RM3_4PORT:
2132 rocketModel[i].model = MODEL_UPCI_RM3_4PORT;
2133 strcpy(rocketModel[i].modelString, "RocketModem III 4 port");
2134 rocketModel[i].numPorts = 4;
2135 rcktpt_io_addr[i] = pci_resource_start(dev, 2);
2136 UPCIRingInd = rcktpt_io_addr[i] + _PCI_9030_RING_IND;
2137 ConfigIO = pci_resource_start(dev, 1);
2138 rcktpt_type[i] = ROCKET_TYPE_MODEMIII;
2144 switch (rcktpt_type[i]) {
2145 case ROCKET_TYPE_MODEM:
2146 board_type = "RocketModem";
2148 case ROCKET_TYPE_MODEMII:
2149 board_type = "RocketModem II";
2151 case ROCKET_TYPE_MODEMIII:
2152 board_type = "RocketModem III";
2155 board_type = "RocketPort";
2160 sClockPrescale = 0x12; /* mod 2 (divide by 3) */
2161 rp_baud_base[i] = 921600;
2164 * If support_low_speed is set, use the slow clock
2165 * prescale, which supports 50 bps
2167 if (support_low_speed) {
2168 /* mod 9 (divide by 10) prescale */
2169 sClockPrescale = 0x19;
2170 rp_baud_base[i] = 230400;
2172 /* mod 4 (devide by 5) prescale */
2173 sClockPrescale = 0x14;
2174 rp_baud_base[i] = 460800;
2178 for (aiop = 0; aiop < max_num_aiops; aiop++)
2179 aiopio[aiop] = rcktpt_io_addr[i] + (aiop * 0x40);
2180 ctlp = sCtlNumToCtlPtr(i);
2181 num_aiops = sPCIInitController(ctlp, i, aiopio, max_num_aiops, ConfigIO, 0, FREQ_DIS, 0, altChanRingIndicator, UPCIRingInd);
2182 for (aiop = 0; aiop < max_num_aiops; aiop++)
2183 ctlp->AiopNumChan[aiop] = ports_per_aiop;
2185 printk("Comtrol PCI controller #%d ID 0x%x found in bus:slot:fn %s at address %04lx, "
2186 "%d AIOP(s) (%s)\n", i, dev->device, pci_name(dev),
2187 rcktpt_io_addr[i], num_aiops, rocketModel[i].modelString);
2188 printk(KERN_INFO "Installing %s, creating /dev/ttyR%d - %ld\n",
2189 rocketModel[i].modelString,
2190 rocketModel[i].startingPortNumber,
2191 rocketModel[i].startingPortNumber +
2192 rocketModel[i].numPorts - 1);
2194 if (num_aiops <= 0) {
2195 rcktpt_io_addr[i] = 0;
2200 /* Reset the AIOPIC, init the serial ports */
2201 for (aiop = 0; aiop < num_aiops; aiop++) {
2202 sResetAiopByNum(ctlp, aiop);
2203 num_chan = ports_per_aiop;
2204 for (chan = 0; chan < num_chan; chan++)
2205 init_r_port(i, aiop, chan, dev);
2208 /* Rocket modems must be reset */
2209 if ((rcktpt_type[i] == ROCKET_TYPE_MODEM) ||
2210 (rcktpt_type[i] == ROCKET_TYPE_MODEMII) ||
2211 (rcktpt_type[i] == ROCKET_TYPE_MODEMIII)) {
2212 num_chan = ports_per_aiop;
2213 for (chan = 0; chan < num_chan; chan++)
2214 sPCIModemReset(ctlp, chan, 1);
2216 for (chan = 0; chan < num_chan; chan++)
2217 sPCIModemReset(ctlp, chan, 0);
2219 rmSpeakerReset(ctlp, rocketModel[i].model);
2225 * Probes for PCI cards, inits them if found
2226 * Input: board_found = number of ISA boards already found, or the
2227 * starting board number
2228 * Returns: Number of PCI boards found
2230 static int __init init_PCI(int boards_found)
2232 struct pci_dev *dev = NULL;
2235 /* Work through the PCI device list, pulling out ours */
2236 while ((dev = pci_find_device(PCI_VENDOR_ID_RP, PCI_ANY_ID, dev))) {
2237 if (register_PCI(count + boards_found, dev))
2243 #endif /* CONFIG_PCI */
2246 * Probes for ISA cards
2247 * Input: i = the board number to look for
2248 * Returns: 1 if board found, 0 else
2250 static int __init init_ISA(int i)
2252 int num_aiops, num_chan = 0, total_num_chan = 0;
2254 unsigned int aiopio[MAX_AIOPS_PER_BOARD];
2258 /* If io_addr is zero, no board configured */
2259 if (rcktpt_io_addr[i] == 0)
2262 /* Reserve the IO region */
2263 if (!request_region(rcktpt_io_addr[i], 64, "Comtrol RocketPort")) {
2264 printk(KERN_INFO "Unable to reserve IO region for configured ISA RocketPort at address 0x%lx, board not installed...\n", rcktpt_io_addr[i]);
2265 rcktpt_io_addr[i] = 0;
2269 ctlp = sCtlNumToCtlPtr(i);
2271 ctlp->boardType = rcktpt_type[i];
2273 switch (rcktpt_type[i]) {
2274 case ROCKET_TYPE_PC104:
2275 type_string = "(PC104)";
2277 case ROCKET_TYPE_MODEM:
2278 type_string = "(RocketModem)";
2280 case ROCKET_TYPE_MODEMII:
2281 type_string = "(RocketModem II)";
2289 * If support_low_speed is set, use the slow clock prescale,
2290 * which supports 50 bps
2292 if (support_low_speed) {
2293 sClockPrescale = 0x19; /* mod 9 (divide by 10) prescale */
2294 rp_baud_base[i] = 230400;
2296 sClockPrescale = 0x14; /* mod 4 (devide by 5) prescale */
2297 rp_baud_base[i] = 460800;
2300 for (aiop = 0; aiop < MAX_AIOPS_PER_BOARD; aiop++)
2301 aiopio[aiop] = rcktpt_io_addr[i] + (aiop * 0x400);
2303 num_aiops = sInitController(ctlp, i, controller + (i * 0x400), aiopio, MAX_AIOPS_PER_BOARD, 0, FREQ_DIS, 0);
2305 if (ctlp->boardType == ROCKET_TYPE_PC104) {
2306 sEnAiop(ctlp, 2); /* only one AIOPIC, but these */
2307 sEnAiop(ctlp, 3); /* CSels used for other stuff */
2310 /* If something went wrong initing the AIOP's release the ISA IO memory */
2311 if (num_aiops <= 0) {
2312 release_region(rcktpt_io_addr[i], 64);
2313 rcktpt_io_addr[i] = 0;
2317 rocketModel[i].startingPortNumber = nextLineNumber;
2319 for (aiop = 0; aiop < num_aiops; aiop++) {
2320 sResetAiopByNum(ctlp, aiop);
2321 sEnAiop(ctlp, aiop);
2322 num_chan = sGetAiopNumChan(ctlp, aiop);
2323 total_num_chan += num_chan;
2324 for (chan = 0; chan < num_chan; chan++)
2325 init_r_port(i, aiop, chan, NULL);
2328 if ((rcktpt_type[i] == ROCKET_TYPE_MODEM) || (rcktpt_type[i] == ROCKET_TYPE_MODEMII)) {
2329 num_chan = sGetAiopNumChan(ctlp, 0);
2330 total_num_chan = num_chan;
2331 for (chan = 0; chan < num_chan; chan++)
2332 sModemReset(ctlp, chan, 1);
2334 for (chan = 0; chan < num_chan; chan++)
2335 sModemReset(ctlp, chan, 0);
2337 strcpy(rocketModel[i].modelString, "RocketModem ISA");
2339 strcpy(rocketModel[i].modelString, "RocketPort ISA");
2341 rocketModel[i].numPorts = total_num_chan;
2342 rocketModel[i].model = MODEL_ISA;
2344 printk(KERN_INFO "RocketPort ISA card #%d found at 0x%lx - %d AIOPs %s\n",
2345 i, rcktpt_io_addr[i], num_aiops, type_string);
2347 printk(KERN_INFO "Installing %s, creating /dev/ttyR%d - %ld\n",
2348 rocketModel[i].modelString,
2349 rocketModel[i].startingPortNumber,
2350 rocketModel[i].startingPortNumber +
2351 rocketModel[i].numPorts - 1);
2356 static struct tty_operations rocket_ops = {
2360 .put_char = rp_put_char,
2361 .write_room = rp_write_room,
2362 .chars_in_buffer = rp_chars_in_buffer,
2363 .flush_buffer = rp_flush_buffer,
2365 .throttle = rp_throttle,
2366 .unthrottle = rp_unthrottle,
2367 .set_termios = rp_set_termios,
2370 .hangup = rp_hangup,
2371 .break_ctl = rp_break,
2372 .send_xchar = rp_send_xchar,
2373 .wait_until_sent = rp_wait_until_sent,
2374 .tiocmget = rp_tiocmget,
2375 .tiocmset = rp_tiocmset,
2379 * The module "startup" routine; it's run when the module is loaded.
2381 int __init rp_init(void)
2383 int retval, pci_boards_found, isa_boards_found, i;
2385 printk(KERN_INFO "RocketPort device driver module, version %s, %s\n",
2386 ROCKET_VERSION, ROCKET_DATE);
2388 rocket_driver = alloc_tty_driver(MAX_RP_PORTS);
2393 * Set up the timer channel.
2395 init_timer(&rocket_timer);
2396 rocket_timer.function = rp_do_poll;
2399 * Initialize the array of pointers to our own internal state
2402 memset(rp_table, 0, sizeof (rp_table));
2403 memset(xmit_flags, 0, sizeof (xmit_flags));
2405 for (i = 0; i < MAX_RP_PORTS; i++)
2408 memset(rocketModel, 0, sizeof (rocketModel));
2411 * If board 1 is non-zero, there is at least one ISA configured. If controller is
2412 * zero, use the default controller IO address of board1 + 0x40.
2415 if (controller == 0)
2416 controller = board1 + 0x40;
2418 controller = 0; /* Used as a flag, meaning no ISA boards */
2421 /* If an ISA card is configured, reserve the 4 byte IO space for the Mudbac controller */
2422 if (controller && (!request_region(controller, 4, "Comtrol RocketPort"))) {
2423 printk(KERN_INFO "Unable to reserve IO region for first configured ISA RocketPort controller 0x%lx. Driver exiting \n", controller);
2427 /* Store ISA variable retrieved from command line or .conf file. */
2428 rcktpt_io_addr[0] = board1;
2429 rcktpt_io_addr[1] = board2;
2430 rcktpt_io_addr[2] = board3;
2431 rcktpt_io_addr[3] = board4;
2433 rcktpt_type[0] = modem1 ? ROCKET_TYPE_MODEM : ROCKET_TYPE_NORMAL;
2434 rcktpt_type[0] = pc104_1[0] ? ROCKET_TYPE_PC104 : rcktpt_type[0];
2435 rcktpt_type[1] = modem2 ? ROCKET_TYPE_MODEM : ROCKET_TYPE_NORMAL;
2436 rcktpt_type[1] = pc104_2[0] ? ROCKET_TYPE_PC104 : rcktpt_type[1];
2437 rcktpt_type[2] = modem3 ? ROCKET_TYPE_MODEM : ROCKET_TYPE_NORMAL;
2438 rcktpt_type[2] = pc104_3[0] ? ROCKET_TYPE_PC104 : rcktpt_type[2];
2439 rcktpt_type[3] = modem4 ? ROCKET_TYPE_MODEM : ROCKET_TYPE_NORMAL;
2440 rcktpt_type[3] = pc104_4[0] ? ROCKET_TYPE_PC104 : rcktpt_type[3];
2443 * Set up the tty driver structure and then register this
2444 * driver with the tty layer.
2447 rocket_driver->owner = THIS_MODULE;
2448 rocket_driver->flags = TTY_DRIVER_NO_DEVFS;
2449 rocket_driver->devfs_name = "tts/R";
2450 rocket_driver->name = "ttyR";
2451 rocket_driver->driver_name = "Comtrol RocketPort";
2452 rocket_driver->major = TTY_ROCKET_MAJOR;
2453 rocket_driver->minor_start = 0;
2454 rocket_driver->type = TTY_DRIVER_TYPE_SERIAL;
2455 rocket_driver->subtype = SERIAL_TYPE_NORMAL;
2456 rocket_driver->init_termios = tty_std_termios;
2457 rocket_driver->init_termios.c_cflag =
2458 B9600 | CS8 | CREAD | HUPCL | CLOCAL;
2459 #ifdef ROCKET_SOFT_FLOW
2460 rocket_driver->flags |= TTY_DRIVER_REAL_RAW | TTY_DRIVER_NO_DEVFS;
2462 tty_set_operations(rocket_driver, &rocket_ops);
2464 retval = tty_register_driver(rocket_driver);
2466 printk(KERN_INFO "Couldn't install tty RocketPort driver (error %d)\n", -retval);
2467 put_tty_driver(rocket_driver);
2471 #ifdef ROCKET_DEBUG_OPEN
2472 printk(KERN_INFO "RocketPort driver is major %d\n", rocket_driver.major);
2476 * OK, let's probe each of the controllers looking for boards. Any boards found
2477 * will be initialized here.
2479 isa_boards_found = 0;
2480 pci_boards_found = 0;
2482 for (i = 0; i < NUM_BOARDS; i++) {
2488 if (isa_boards_found < NUM_BOARDS)
2489 pci_boards_found = init_PCI(isa_boards_found);
2492 max_board = pci_boards_found + isa_boards_found;
2494 if (max_board == 0) {
2495 printk(KERN_INFO "No rocketport ports found; unloading driver.\n");
2496 del_timer_sync(&rocket_timer);
2497 tty_unregister_driver(rocket_driver);
2498 put_tty_driver(rocket_driver);
2507 static void rp_cleanup_module(void)
2512 del_timer_sync(&rocket_timer);
2514 retval = tty_unregister_driver(rocket_driver);
2516 printk(KERN_INFO "Error %d while trying to unregister "
2517 "rocketport driver\n", -retval);
2518 put_tty_driver(rocket_driver);
2520 for (i = 0; i < MAX_RP_PORTS; i++) {
2525 for (i = 0; i < NUM_BOARDS; i++) {
2526 if (rcktpt_io_addr[i] <= 0 || is_PCI[i])
2528 release_region(rcktpt_io_addr[i], 64);
2531 release_region(controller, 4);
2535 /***************************************************************************
2536 Function: sInitController
2537 Purpose: Initialization of controller global registers and controller
2539 Call: sInitController(CtlP,CtlNum,MudbacIO,AiopIOList,AiopIOListSize,
2540 IRQNum,Frequency,PeriodicOnly)
2541 CONTROLLER_T *CtlP; Ptr to controller structure
2542 int CtlNum; Controller number
2543 ByteIO_t MudbacIO; Mudbac base I/O address.
2544 ByteIO_t *AiopIOList; List of I/O addresses for each AIOP.
2545 This list must be in the order the AIOPs will be found on the
2546 controller. Once an AIOP in the list is not found, it is
2547 assumed that there are no more AIOPs on the controller.
2548 int AiopIOListSize; Number of addresses in AiopIOList
2549 int IRQNum; Interrupt Request number. Can be any of the following:
2550 0: Disable global interrupts
2559 Byte_t Frequency: A flag identifying the frequency
2560 of the periodic interrupt, can be any one of the following:
2561 FREQ_DIS - periodic interrupt disabled
2562 FREQ_137HZ - 137 Hertz
2563 FREQ_69HZ - 69 Hertz
2564 FREQ_34HZ - 34 Hertz
2565 FREQ_17HZ - 17 Hertz
2568 If IRQNum is set to 0 the Frequency parameter is
2569 overidden, it is forced to a value of FREQ_DIS.
2570 int PeriodicOnly: 1 if all interrupts except the periodic
2571 interrupt are to be blocked.
2572 0 is both the periodic interrupt and
2573 other channel interrupts are allowed.
2574 If IRQNum is set to 0 the PeriodicOnly parameter is
2575 overidden, it is forced to a value of 0.
2576 Return: int: Number of AIOPs on the controller, or CTLID_NULL if controller
2577 initialization failed.
2580 If periodic interrupts are to be disabled but AIOP interrupts
2581 are allowed, set Frequency to FREQ_DIS and PeriodicOnly to 0.
2583 If interrupts are to be completely disabled set IRQNum to 0.
2585 Setting Frequency to FREQ_DIS and PeriodicOnly to 1 is an
2586 invalid combination.
2588 This function performs initialization of global interrupt modes,
2589 but it does not actually enable global interrupts. To enable
2590 and disable global interrupts use functions sEnGlobalInt() and
2591 sDisGlobalInt(). Enabling of global interrupts is normally not
2592 done until all other initializations are complete.
2594 Even if interrupts are globally enabled, they must also be
2595 individually enabled for each channel that is to generate
2598 Warnings: No range checking on any of the parameters is done.
2600 No context switches are allowed while executing this function.
2602 After this function all AIOPs on the controller are disabled,
2603 they can be enabled with sEnAiop().
2605 static int sInitController(CONTROLLER_T * CtlP, int CtlNum, ByteIO_t MudbacIO,
2606 ByteIO_t * AiopIOList, int AiopIOListSize,
2607 int IRQNum, Byte_t Frequency, int PeriodicOnly)
2613 CtlP->AiopIntrBits = aiop_intr_bits;
2614 CtlP->AltChanRingIndicator = 0;
2615 CtlP->CtlNum = CtlNum;
2616 CtlP->CtlID = CTLID_0001; /* controller release 1 */
2617 CtlP->BusType = isISA;
2618 CtlP->MBaseIO = MudbacIO;
2619 CtlP->MReg1IO = MudbacIO + 1;
2620 CtlP->MReg2IO = MudbacIO + 2;
2621 CtlP->MReg3IO = MudbacIO + 3;
2623 CtlP->MReg2 = 0; /* interrupt disable */
2624 CtlP->MReg3 = 0; /* no periodic interrupts */
2626 if (sIRQMap[IRQNum] == 0) { /* interrupts globally disabled */
2627 CtlP->MReg2 = 0; /* interrupt disable */
2628 CtlP->MReg3 = 0; /* no periodic interrupts */
2630 CtlP->MReg2 = sIRQMap[IRQNum]; /* set IRQ number */
2631 CtlP->MReg3 = Frequency; /* set frequency */
2632 if (PeriodicOnly) { /* periodic interrupt only */
2633 CtlP->MReg3 |= PERIODIC_ONLY;
2637 sOutB(CtlP->MReg2IO, CtlP->MReg2);
2638 sOutB(CtlP->MReg3IO, CtlP->MReg3);
2639 sControllerEOI(CtlP); /* clear EOI if warm init */
2642 for (i = done = 0; i < AiopIOListSize; i++) {
2644 CtlP->AiopIO[i] = (WordIO_t) io;
2645 CtlP->AiopIntChanIO[i] = io + _INT_CHAN;
2646 sOutB(CtlP->MReg2IO, CtlP->MReg2 | (i & 0x03)); /* AIOP index */
2647 sOutB(MudbacIO, (Byte_t) (io >> 6)); /* set up AIOP I/O in MUDBAC */
2650 sEnAiop(CtlP, i); /* enable the AIOP */
2651 CtlP->AiopID[i] = sReadAiopID(io); /* read AIOP ID */
2652 if (CtlP->AiopID[i] == AIOPID_NULL) /* if AIOP does not exist */
2653 done = 1; /* done looking for AIOPs */
2655 CtlP->AiopNumChan[i] = sReadAiopNumChan((WordIO_t) io); /* num channels in AIOP */
2656 sOutW((WordIO_t) io + _INDX_ADDR, _CLK_PRE); /* clock prescaler */
2657 sOutB(io + _INDX_DATA, sClockPrescale);
2658 CtlP->NumAiop++; /* bump count of AIOPs */
2660 sDisAiop(CtlP, i); /* disable AIOP */
2663 if (CtlP->NumAiop == 0)
2666 return (CtlP->NumAiop);
2669 /***************************************************************************
2670 Function: sPCIInitController
2671 Purpose: Initialization of controller global registers and controller
2673 Call: sPCIInitController(CtlP,CtlNum,AiopIOList,AiopIOListSize,
2674 IRQNum,Frequency,PeriodicOnly)
2675 CONTROLLER_T *CtlP; Ptr to controller structure
2676 int CtlNum; Controller number
2677 ByteIO_t *AiopIOList; List of I/O addresses for each AIOP.
2678 This list must be in the order the AIOPs will be found on the
2679 controller. Once an AIOP in the list is not found, it is
2680 assumed that there are no more AIOPs on the controller.
2681 int AiopIOListSize; Number of addresses in AiopIOList
2682 int IRQNum; Interrupt Request number. Can be any of the following:
2683 0: Disable global interrupts
2692 Byte_t Frequency: A flag identifying the frequency
2693 of the periodic interrupt, can be any one of the following:
2694 FREQ_DIS - periodic interrupt disabled
2695 FREQ_137HZ - 137 Hertz
2696 FREQ_69HZ - 69 Hertz
2697 FREQ_34HZ - 34 Hertz
2698 FREQ_17HZ - 17 Hertz
2701 If IRQNum is set to 0 the Frequency parameter is
2702 overidden, it is forced to a value of FREQ_DIS.
2703 int PeriodicOnly: 1 if all interrupts except the periodic
2704 interrupt are to be blocked.
2705 0 is both the periodic interrupt and
2706 other channel interrupts are allowed.
2707 If IRQNum is set to 0 the PeriodicOnly parameter is
2708 overidden, it is forced to a value of 0.
2709 Return: int: Number of AIOPs on the controller, or CTLID_NULL if controller
2710 initialization failed.
2713 If periodic interrupts are to be disabled but AIOP interrupts
2714 are allowed, set Frequency to FREQ_DIS and PeriodicOnly to 0.
2716 If interrupts are to be completely disabled set IRQNum to 0.
2718 Setting Frequency to FREQ_DIS and PeriodicOnly to 1 is an
2719 invalid combination.
2721 This function performs initialization of global interrupt modes,
2722 but it does not actually enable global interrupts. To enable
2723 and disable global interrupts use functions sEnGlobalInt() and
2724 sDisGlobalInt(). Enabling of global interrupts is normally not
2725 done until all other initializations are complete.
2727 Even if interrupts are globally enabled, they must also be
2728 individually enabled for each channel that is to generate
2731 Warnings: No range checking on any of the parameters is done.
2733 No context switches are allowed while executing this function.
2735 After this function all AIOPs on the controller are disabled,
2736 they can be enabled with sEnAiop().
2738 static int sPCIInitController(CONTROLLER_T * CtlP, int CtlNum,
2739 ByteIO_t * AiopIOList, int AiopIOListSize,
2740 WordIO_t ConfigIO, int IRQNum, Byte_t Frequency,
2741 int PeriodicOnly, int altChanRingIndicator,
2747 CtlP->AltChanRingIndicator = altChanRingIndicator;
2748 CtlP->UPCIRingInd = UPCIRingInd;
2749 CtlP->CtlNum = CtlNum;
2750 CtlP->CtlID = CTLID_0001; /* controller release 1 */
2751 CtlP->BusType = isPCI; /* controller release 1 */
2755 CtlP->PCIIO = ConfigIO + _PCI_9030_INT_CTRL;
2756 CtlP->PCIIO2 = ConfigIO + _PCI_9030_GPIO_CTRL;
2757 CtlP->AiopIntrBits = upci_aiop_intr_bits;
2761 (WordIO_t) ((ByteIO_t) AiopIOList[0] + _PCI_INT_FUNC);
2762 CtlP->AiopIntrBits = aiop_intr_bits;
2765 sPCIControllerEOI(CtlP); /* clear EOI if warm init */
2768 for (i = 0; i < AiopIOListSize; i++) {
2770 CtlP->AiopIO[i] = (WordIO_t) io;
2771 CtlP->AiopIntChanIO[i] = io + _INT_CHAN;
2773 CtlP->AiopID[i] = sReadAiopID(io); /* read AIOP ID */
2774 if (CtlP->AiopID[i] == AIOPID_NULL) /* if AIOP does not exist */
2775 break; /* done looking for AIOPs */
2777 CtlP->AiopNumChan[i] = sReadAiopNumChan((WordIO_t) io); /* num channels in AIOP */
2778 sOutW((WordIO_t) io + _INDX_ADDR, _CLK_PRE); /* clock prescaler */
2779 sOutB(io + _INDX_DATA, sClockPrescale);
2780 CtlP->NumAiop++; /* bump count of AIOPs */
2783 if (CtlP->NumAiop == 0)
2786 return (CtlP->NumAiop);
2789 /***************************************************************************
2790 Function: sReadAiopID
2791 Purpose: Read the AIOP idenfication number directly from an AIOP.
2792 Call: sReadAiopID(io)
2793 ByteIO_t io: AIOP base I/O address
2794 Return: int: Flag AIOPID_XXXX if a valid AIOP is found, where X
2795 is replace by an identifying number.
2796 Flag AIOPID_NULL if no valid AIOP is found
2797 Warnings: No context switches are allowed while executing this function.
2800 static int sReadAiopID(ByteIO_t io)
2802 Byte_t AiopID; /* ID byte from AIOP */
2804 sOutB(io + _CMD_REG, RESET_ALL); /* reset AIOP */
2805 sOutB(io + _CMD_REG, 0x0);
2806 AiopID = sInW(io + _CHN_STAT0) & 0x07;
2809 else /* AIOP does not exist */
2813 /***************************************************************************
2814 Function: sReadAiopNumChan
2815 Purpose: Read the number of channels available in an AIOP directly from
2817 Call: sReadAiopNumChan(io)
2818 WordIO_t io: AIOP base I/O address
2819 Return: int: The number of channels available
2820 Comments: The number of channels is determined by write/reads from identical
2821 offsets within the SRAM address spaces for channels 0 and 4.
2822 If the channel 4 space is mirrored to channel 0 it is a 4 channel
2823 AIOP, otherwise it is an 8 channel.
2824 Warnings: No context switches are allowed while executing this function.
2826 static int sReadAiopNumChan(WordIO_t io)
2829 static Byte_t R[4] = { 0x00, 0x00, 0x34, 0x12 };
2831 /* write to chan 0 SRAM */
2832 sOutDW((DWordIO_t) io + _INDX_ADDR, *((DWord_t *) & R[0]));
2833 sOutW(io + _INDX_ADDR, 0); /* read from SRAM, chan 0 */
2834 x = sInW(io + _INDX_DATA);
2835 sOutW(io + _INDX_ADDR, 0x4000); /* read from SRAM, chan 4 */
2836 if (x != sInW(io + _INDX_DATA)) /* if different must be 8 chan */
2842 /***************************************************************************
2844 Purpose: Initialization of a channel and channel structure
2845 Call: sInitChan(CtlP,ChP,AiopNum,ChanNum)
2846 CONTROLLER_T *CtlP; Ptr to controller structure
2847 CHANNEL_T *ChP; Ptr to channel structure
2848 int AiopNum; AIOP number within controller
2849 int ChanNum; Channel number within AIOP
2850 Return: int: 1 if initialization succeeded, 0 if it fails because channel
2851 number exceeds number of channels available in AIOP.
2852 Comments: This function must be called before a channel can be used.
2853 Warnings: No range checking on any of the parameters is done.
2855 No context switches are allowed while executing this function.
2857 static int sInitChan(CONTROLLER_T * CtlP, CHANNEL_T * ChP, int AiopNum,
2868 if (ChanNum >= CtlP->AiopNumChan[AiopNum])
2869 return 0; /* exceeds num chans in AIOP */
2871 /* Channel, AIOP, and controller identifiers */
2873 ChP->ChanID = CtlP->AiopID[AiopNum];
2874 ChP->AiopNum = AiopNum;
2875 ChP->ChanNum = ChanNum;
2877 /* Global direct addresses */
2878 AiopIO = CtlP->AiopIO[AiopNum];
2879 ChP->Cmd = (ByteIO_t) AiopIO + _CMD_REG;
2880 ChP->IntChan = (ByteIO_t) AiopIO + _INT_CHAN;
2881 ChP->IntMask = (ByteIO_t) AiopIO + _INT_MASK;
2882 ChP->IndexAddr = (DWordIO_t) AiopIO + _INDX_ADDR;
2883 ChP->IndexData = AiopIO + _INDX_DATA;
2885 /* Channel direct addresses */
2886 ChIOOff = AiopIO + ChP->ChanNum * 2;
2887 ChP->TxRxData = ChIOOff + _TD0;
2888 ChP->ChanStat = ChIOOff + _CHN_STAT0;
2889 ChP->TxRxCount = ChIOOff + _FIFO_CNT0;
2890 ChP->IntID = (ByteIO_t) AiopIO + ChP->ChanNum + _INT_ID0;
2892 /* Initialize the channel from the RData array */
2893 for (i = 0; i < RDATASIZE; i += 4) {
2895 R[1] = RData[i + 1] + 0x10 * ChanNum;
2896 R[2] = RData[i + 2];
2897 R[3] = RData[i + 3];
2898 sOutDW(ChP->IndexAddr, *((DWord_t *) & R[0]));
2902 for (i = 0; i < RREGDATASIZE; i += 4) {
2903 ChR[i] = RRegData[i];
2904 ChR[i + 1] = RRegData[i + 1] + 0x10 * ChanNum;
2905 ChR[i + 2] = RRegData[i + 2];
2906 ChR[i + 3] = RRegData[i + 3];
2909 /* Indexed registers */
2910 ChOff = (Word_t) ChanNum *0x1000;
2912 if (sClockPrescale == 0x14)
2917 ChP->BaudDiv[0] = (Byte_t) (ChOff + _BAUD);
2918 ChP->BaudDiv[1] = (Byte_t) ((ChOff + _BAUD) >> 8);
2919 ChP->BaudDiv[2] = (Byte_t) brd9600;
2920 ChP->BaudDiv[3] = (Byte_t) (brd9600 >> 8);
2921 sOutDW(ChP->IndexAddr, *(DWord_t *) & ChP->BaudDiv[0]);
2923 ChP->TxControl[0] = (Byte_t) (ChOff + _TX_CTRL);
2924 ChP->TxControl[1] = (Byte_t) ((ChOff + _TX_CTRL) >> 8);
2925 ChP->TxControl[2] = 0;
2926 ChP->TxControl[3] = 0;
2927 sOutDW(ChP->IndexAddr, *(DWord_t *) & ChP->TxControl[0]);
2929 ChP->RxControl[0] = (Byte_t) (ChOff + _RX_CTRL);
2930 ChP->RxControl[1] = (Byte_t) ((ChOff + _RX_CTRL) >> 8);
2931 ChP->RxControl[2] = 0;
2932 ChP->RxControl[3] = 0;
2933 sOutDW(ChP->IndexAddr, *(DWord_t *) & ChP->RxControl[0]);
2935 ChP->TxEnables[0] = (Byte_t) (ChOff + _TX_ENBLS);
2936 ChP->TxEnables[1] = (Byte_t) ((ChOff + _TX_ENBLS) >> 8);
2937 ChP->TxEnables[2] = 0;
2938 ChP->TxEnables[3] = 0;
2939 sOutDW(ChP->IndexAddr, *(DWord_t *) & ChP->TxEnables[0]);
2941 ChP->TxCompare[0] = (Byte_t) (ChOff + _TXCMP1);
2942 ChP->TxCompare[1] = (Byte_t) ((ChOff + _TXCMP1) >> 8);
2943 ChP->TxCompare[2] = 0;
2944 ChP->TxCompare[3] = 0;
2945 sOutDW(ChP->IndexAddr, *(DWord_t *) & ChP->TxCompare[0]);
2947 ChP->TxReplace1[0] = (Byte_t) (ChOff + _TXREP1B1);
2948 ChP->TxReplace1[1] = (Byte_t) ((ChOff + _TXREP1B1) >> 8);
2949 ChP->TxReplace1[2] = 0;
2950 ChP->TxReplace1[3] = 0;
2951 sOutDW(ChP->IndexAddr, *(DWord_t *) & ChP->TxReplace1[0]);
2953 ChP->TxReplace2[0] = (Byte_t) (ChOff + _TXREP2);
2954 ChP->TxReplace2[1] = (Byte_t) ((ChOff + _TXREP2) >> 8);
2955 ChP->TxReplace2[2] = 0;
2956 ChP->TxReplace2[3] = 0;
2957 sOutDW(ChP->IndexAddr, *(DWord_t *) & ChP->TxReplace2[0]);
2959 ChP->TxFIFOPtrs = ChOff + _TXF_OUTP;
2960 ChP->TxFIFO = ChOff + _TX_FIFO;
2962 sOutB(ChP->Cmd, (Byte_t) ChanNum | RESTXFCNT); /* apply reset Tx FIFO count */
2963 sOutB(ChP->Cmd, (Byte_t) ChanNum); /* remove reset Tx FIFO count */
2964 sOutW((WordIO_t) ChP->IndexAddr, ChP->TxFIFOPtrs); /* clear Tx in/out ptrs */
2965 sOutW(ChP->IndexData, 0);
2966 ChP->RxFIFOPtrs = ChOff + _RXF_OUTP;
2967 ChP->RxFIFO = ChOff + _RX_FIFO;
2969 sOutB(ChP->Cmd, (Byte_t) ChanNum | RESRXFCNT); /* apply reset Rx FIFO count */
2970 sOutB(ChP->Cmd, (Byte_t) ChanNum); /* remove reset Rx FIFO count */
2971 sOutW((WordIO_t) ChP->IndexAddr, ChP->RxFIFOPtrs); /* clear Rx out ptr */
2972 sOutW(ChP->IndexData, 0);
2973 sOutW((WordIO_t) ChP->IndexAddr, ChP->RxFIFOPtrs + 2); /* clear Rx in ptr */
2974 sOutW(ChP->IndexData, 0);
2975 ChP->TxPrioCnt = ChOff + _TXP_CNT;
2976 sOutW((WordIO_t) ChP->IndexAddr, ChP->TxPrioCnt);
2977 sOutB(ChP->IndexData, 0);
2978 ChP->TxPrioPtr = ChOff + _TXP_PNTR;
2979 sOutW((WordIO_t) ChP->IndexAddr, ChP->TxPrioPtr);
2980 sOutB(ChP->IndexData, 0);
2981 ChP->TxPrioBuf = ChOff + _TXP_BUF;
2982 sEnRxProcessor(ChP); /* start the Rx processor */
2987 /***************************************************************************
2988 Function: sStopRxProcessor
2989 Purpose: Stop the receive processor from processing a channel.
2990 Call: sStopRxProcessor(ChP)
2991 CHANNEL_T *ChP; Ptr to channel structure
2993 Comments: The receive processor can be started again with sStartRxProcessor().
2994 This function causes the receive processor to skip over the
2995 stopped channel. It does not stop it from processing other channels.
2997 Warnings: No context switches are allowed while executing this function.
2999 Do not leave the receive processor stopped for more than one
3002 After calling this function a delay of 4 uS is required to ensure
3003 that the receive processor is no longer processing this channel.
3005 static void sStopRxProcessor(CHANNEL_T * ChP)
3013 sOutDW(ChP->IndexAddr, *(DWord_t *) & R[0]);
3016 /***************************************************************************
3017 Function: sFlushRxFIFO
3018 Purpose: Flush the Rx FIFO
3019 Call: sFlushRxFIFO(ChP)
3020 CHANNEL_T *ChP; Ptr to channel structure
3022 Comments: To prevent data from being enqueued or dequeued in the Tx FIFO
3023 while it is being flushed the receive processor is stopped
3024 and the transmitter is disabled. After these operations a
3025 4 uS delay is done before clearing the pointers to allow
3026 the receive processor to stop. These items are handled inside
3028 Warnings: No context switches are allowed while executing this function.
3030 static void sFlushRxFIFO(CHANNEL_T * ChP)
3033 Byte_t Ch; /* channel number within AIOP */
3034 int RxFIFOEnabled; /* 1 if Rx FIFO enabled */
3036 if (sGetRxCnt(ChP) == 0) /* Rx FIFO empty */
3037 return; /* don't need to flush */
3040 if (ChP->R[0x32] == 0x08) { /* Rx FIFO is enabled */
3042 sDisRxFIFO(ChP); /* disable it */
3043 for (i = 0; i < 2000 / 200; i++) /* delay 2 uS to allow proc to disable FIFO */
3044 sInB(ChP->IntChan); /* depends on bus i/o timing */
3046 sGetChanStatus(ChP); /* clear any pending Rx errors in chan stat */
3047 Ch = (Byte_t) sGetChanNum(ChP);
3048 sOutB(ChP->Cmd, Ch | RESRXFCNT); /* apply reset Rx FIFO count */
3049 sOutB(ChP->Cmd, Ch); /* remove reset Rx FIFO count */
3050 sOutW((WordIO_t) ChP->IndexAddr, ChP->RxFIFOPtrs); /* clear Rx out ptr */
3051 sOutW(ChP->IndexData, 0);
3052 sOutW((WordIO_t) ChP->IndexAddr, ChP->RxFIFOPtrs + 2); /* clear Rx in ptr */
3053 sOutW(ChP->IndexData, 0);
3055 sEnRxFIFO(ChP); /* enable Rx FIFO */
3058 /***************************************************************************
3059 Function: sFlushTxFIFO
3060 Purpose: Flush the Tx FIFO
3061 Call: sFlushTxFIFO(ChP)
3062 CHANNEL_T *ChP; Ptr to channel structure
3064 Comments: To prevent data from being enqueued or dequeued in the Tx FIFO
3065 while it is being flushed the receive processor is stopped
3066 and the transmitter is disabled. After these operations a
3067 4 uS delay is done before clearing the pointers to allow
3068 the receive processor to stop. These items are handled inside
3070 Warnings: No context switches are allowed while executing this function.
3072 static void sFlushTxFIFO(CHANNEL_T * ChP)
3075 Byte_t Ch; /* channel number within AIOP */
3076 int TxEnabled; /* 1 if transmitter enabled */
3078 if (sGetTxCnt(ChP) == 0) /* Tx FIFO empty */
3079 return; /* don't need to flush */
3082 if (ChP->TxControl[3] & TX_ENABLE) {
3084 sDisTransmit(ChP); /* disable transmitter */
3086 sStopRxProcessor(ChP); /* stop Rx processor */
3087 for (i = 0; i < 4000 / 200; i++) /* delay 4 uS to allow proc to stop */
3088 sInB(ChP->IntChan); /* depends on bus i/o timing */
3089 Ch = (Byte_t) sGetChanNum(ChP);
3090 sOutB(ChP->Cmd, Ch | RESTXFCNT); /* apply reset Tx FIFO count */
3091 sOutB(ChP->Cmd, Ch); /* remove reset Tx FIFO count */
3092 sOutW((WordIO_t) ChP->IndexAddr, ChP->TxFIFOPtrs); /* clear Tx in/out ptrs */
3093 sOutW(ChP->IndexData, 0);
3095 sEnTransmit(ChP); /* enable transmitter */
3096 sStartRxProcessor(ChP); /* restart Rx processor */
3099 /***************************************************************************
3100 Function: sWriteTxPrioByte
3101 Purpose: Write a byte of priority transmit data to a channel
3102 Call: sWriteTxPrioByte(ChP,Data)
3103 CHANNEL_T *ChP; Ptr to channel structure
3104 Byte_t Data; The transmit data byte
3106 Return: int: 1 if the bytes is successfully written, otherwise 0.
3108 Comments: The priority byte is transmitted before any data in the Tx FIFO.
3110 Warnings: No context switches are allowed while executing this function.
3112 static int sWriteTxPrioByte(CHANNEL_T * ChP, Byte_t Data)
3114 Byte_t DWBuf[4]; /* buffer for double word writes */
3115 Word_t *WordPtr; /* must be far because Win SS != DS */
3116 register DWordIO_t IndexAddr;
3118 if (sGetTxCnt(ChP) > 1) { /* write it to Tx priority buffer */
3119 IndexAddr = ChP->IndexAddr;
3120 sOutW((WordIO_t) IndexAddr, ChP->TxPrioCnt); /* get priority buffer status */
3121 if (sInB((ByteIO_t) ChP->IndexData) & PRI_PEND) /* priority buffer busy */
3122 return (0); /* nothing sent */
3124 WordPtr = (Word_t *) (&DWBuf[0]);
3125 *WordPtr = ChP->TxPrioBuf; /* data byte address */
3127 DWBuf[2] = Data; /* data byte value */
3128 sOutDW(IndexAddr, *((DWord_t *) (&DWBuf[0]))); /* write it out */
3130 *WordPtr = ChP->TxPrioCnt; /* Tx priority count address */
3132 DWBuf[2] = PRI_PEND + 1; /* indicate 1 byte pending */
3133 DWBuf[3] = 0; /* priority buffer pointer */
3134 sOutDW(IndexAddr, *((DWord_t *) (&DWBuf[0]))); /* write it out */
3135 } else { /* write it to Tx FIFO */
3137 sWriteTxByte(sGetTxRxDataIO(ChP), Data);
3139 return (1); /* 1 byte sent */
3142 /***************************************************************************
3143 Function: sEnInterrupts
3144 Purpose: Enable one or more interrupts for a channel
3145 Call: sEnInterrupts(ChP,Flags)
3146 CHANNEL_T *ChP; Ptr to channel structure
3147 Word_t Flags: Interrupt enable flags, can be any combination
3148 of the following flags:
3149 TXINT_EN: Interrupt on Tx FIFO empty
3150 RXINT_EN: Interrupt on Rx FIFO at trigger level (see
3152 SRCINT_EN: Interrupt on SRC (Special Rx Condition)
3153 MCINT_EN: Interrupt on modem input change
3154 CHANINT_EN: Allow channel interrupt signal to the AIOP's
3155 Interrupt Channel Register.
3157 Comments: If an interrupt enable flag is set in Flags, that interrupt will be
3158 enabled. If an interrupt enable flag is not set in Flags, that
3159 interrupt will not be changed. Interrupts can be disabled with
3160 function sDisInterrupts().
3162 This function sets the appropriate bit for the channel in the AIOP's
3163 Interrupt Mask Register if the CHANINT_EN flag is set. This allows
3164 this channel's bit to be set in the AIOP's Interrupt Channel Register.
3166 Interrupts must also be globally enabled before channel interrupts
3167 will be passed on to the host. This is done with function
3170 In some cases it may be desirable to disable interrupts globally but
3171 enable channel interrupts. This would allow the global interrupt
3172 status register to be used to determine which AIOPs need service.
3174 static void sEnInterrupts(CHANNEL_T * ChP, Word_t Flags)
3176 Byte_t Mask; /* Interrupt Mask Register */
3178 ChP->RxControl[2] |=
3179 ((Byte_t) Flags & (RXINT_EN | SRCINT_EN | MCINT_EN));
3181 sOutDW(ChP->IndexAddr, *(DWord_t *) & ChP->RxControl[0]);
3183 ChP->TxControl[2] |= ((Byte_t) Flags & TXINT_EN);
3185 sOutDW(ChP->IndexAddr, *(DWord_t *) & ChP->TxControl[0]);
3187 if (Flags & CHANINT_EN) {
3188 Mask = sInB(ChP->IntMask) | sBitMapSetTbl[ChP->ChanNum];
3189 sOutB(ChP->IntMask, Mask);
3193 /***************************************************************************
3194 Function: sDisInterrupts
3195 Purpose: Disable one or more interrupts for a channel
3196 Call: sDisInterrupts(ChP,Flags)
3197 CHANNEL_T *ChP; Ptr to channel structure
3198 Word_t Flags: Interrupt flags, can be any combination
3199 of the following flags:
3200 TXINT_EN: Interrupt on Tx FIFO empty
3201 RXINT_EN: Interrupt on Rx FIFO at trigger level (see
3203 SRCINT_EN: Interrupt on SRC (Special Rx Condition)
3204 MCINT_EN: Interrupt on modem input change
3205 CHANINT_EN: Disable channel interrupt signal to the
3206 AIOP's Interrupt Channel Register.
3208 Comments: If an interrupt flag is set in Flags, that interrupt will be
3209 disabled. If an interrupt flag is not set in Flags, that
3210 interrupt will not be changed. Interrupts can be enabled with
3211 function sEnInterrupts().
3213 This function clears the appropriate bit for the channel in the AIOP's
3214 Interrupt Mask Register if the CHANINT_EN flag is set. This blocks
3215 this channel's bit from being set in the AIOP's Interrupt Channel
3218 static void sDisInterrupts(CHANNEL_T * ChP, Word_t Flags)
3220 Byte_t Mask; /* Interrupt Mask Register */
3222 ChP->RxControl[2] &=
3223 ~((Byte_t) Flags & (RXINT_EN | SRCINT_EN | MCINT_EN));
3224 sOutDW(ChP->IndexAddr, *(DWord_t *) & ChP->RxControl[0]);
3225 ChP->TxControl[2] &= ~((Byte_t) Flags & TXINT_EN);
3226 sOutDW(ChP->IndexAddr, *(DWord_t *) & ChP->TxControl[0]);
3228 if (Flags & CHANINT_EN) {
3229 Mask = sInB(ChP->IntMask) & sBitMapClrTbl[ChP->ChanNum];
3230 sOutB(ChP->IntMask, Mask);
3234 static void sSetInterfaceMode(CHANNEL_T * ChP, Byte_t mode)
3236 sOutB(ChP->CtlP->AiopIO[2], (mode & 0x18) | ChP->ChanNum);
3240 * Not an official SSCI function, but how to reset RocketModems.
3243 static void sModemReset(CONTROLLER_T * CtlP, int chan, int on)
3248 addr = CtlP->AiopIO[0] + 0x400;
3249 val = sInB(CtlP->MReg3IO);
3250 /* if AIOP[1] is not enabled, enable it */
3251 if ((val & 2) == 0) {
3252 val = sInB(CtlP->MReg2IO);
3253 sOutB(CtlP->MReg2IO, (val & 0xfc) | (1 & 0x03));
3254 sOutB(CtlP->MBaseIO, (unsigned char) (addr >> 6));
3260 sOutB(addr + chan, 0); /* apply or remove reset */
3265 * Not an official SSCI function, but how to reset RocketModems.
3268 static void sPCIModemReset(CONTROLLER_T * CtlP, int chan, int on)
3272 addr = CtlP->AiopIO[0] + 0x40; /* 2nd AIOP */
3275 sOutB(addr + chan, 0); /* apply or remove reset */
3278 /* Resets the speaker controller on RocketModem II and III devices */
3279 static void rmSpeakerReset(CONTROLLER_T * CtlP, unsigned long model)
3283 /* RocketModem II speaker control is at the 8th port location of offset 0x40 */
3284 if ((model == MODEL_RP4M) || (model == MODEL_RP6M)) {
3285 addr = CtlP->AiopIO[0] + 0x4F;
3289 /* RocketModem III speaker control is at the 1st port location of offset 0x80 */
3290 if ((model == MODEL_UPCI_RM3_8PORT)
3291 || (model == MODEL_UPCI_RM3_4PORT)) {
3292 addr = CtlP->AiopIO[0] + 0x88;
3297 /* Returns the line number given the controller (board), aiop and channel number */
3298 static unsigned char GetLineNumber(int ctrl, int aiop, int ch)
3300 return lineNumbers[(ctrl << 5) | (aiop << 3) | ch];
3304 * Stores the line number associated with a given controller (board), aiop
3305 * and channel number.
3306 * Returns: The line number assigned
3308 static unsigned char SetLineNumber(int ctrl, int aiop, int ch)
3310 lineNumbers[(ctrl << 5) | (aiop << 3) | ch] = nextLineNumber++;
3311 return (nextLineNumber - 1);