Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * RocketPort device driver for Linux | |
3 | * | |
4 | * Written by Theodore Ts'o, 1995, 1996, 1997, 1998, 1999, 2000. | |
5 | * | |
6 | * Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2003 by Comtrol, Inc. | |
7 | * | |
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. | |
12 | * | |
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. | |
17 | * | |
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. | |
21 | */ | |
22 | ||
23 | /* | |
24 | * Kernel Synchronization: | |
25 | * | |
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 | |
28 | * are not used. | |
29 | * | |
30 | * Critical data: | |
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. | |
37 | * | |
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. | |
40 | */ | |
41 | ||
42 | /****** Defines ******/ | |
1da177e4 LT |
43 | #define ROCKET_PARANOIA_CHECK |
44 | #define ROCKET_DISABLE_SIMUSAGE | |
45 | ||
46 | #undef ROCKET_SOFT_FLOW | |
47 | #undef ROCKET_DEBUG_OPEN | |
48 | #undef ROCKET_DEBUG_INTR | |
49 | #undef ROCKET_DEBUG_WRITE | |
50 | #undef ROCKET_DEBUG_FLOW | |
51 | #undef ROCKET_DEBUG_THROTTLE | |
52 | #undef ROCKET_DEBUG_WAIT_UNTIL_SENT | |
53 | #undef ROCKET_DEBUG_RECEIVE | |
54 | #undef ROCKET_DEBUG_HANGUP | |
55 | #undef REV_PCI_ORDER | |
56 | #undef ROCKET_DEBUG_IO | |
57 | ||
58 | #define POLL_PERIOD HZ/100 /* Polling period .01 seconds (10ms) */ | |
59 | ||
60 | /****** Kernel includes ******/ | |
61 | ||
1da177e4 LT |
62 | #include <linux/module.h> |
63 | #include <linux/errno.h> | |
64 | #include <linux/major.h> | |
65 | #include <linux/kernel.h> | |
66 | #include <linux/signal.h> | |
67 | #include <linux/slab.h> | |
68 | #include <linux/mm.h> | |
69 | #include <linux/sched.h> | |
70 | #include <linux/timer.h> | |
71 | #include <linux/interrupt.h> | |
72 | #include <linux/tty.h> | |
73 | #include <linux/tty_driver.h> | |
74 | #include <linux/tty_flip.h> | |
44b7d1b3 | 75 | #include <linux/serial.h> |
1da177e4 LT |
76 | #include <linux/string.h> |
77 | #include <linux/fcntl.h> | |
78 | #include <linux/ptrace.h> | |
69f545ea | 79 | #include <linux/mutex.h> |
1da177e4 LT |
80 | #include <linux/ioport.h> |
81 | #include <linux/delay.h> | |
8cf5a8c5 | 82 | #include <linux/completion.h> |
1da177e4 LT |
83 | #include <linux/wait.h> |
84 | #include <linux/pci.h> | |
44b7d1b3 | 85 | #include <linux/uaccess.h> |
1da177e4 | 86 | #include <asm/atomic.h> |
457fb605 | 87 | #include <asm/unaligned.h> |
1da177e4 LT |
88 | #include <linux/bitops.h> |
89 | #include <linux/spinlock.h> | |
1da177e4 LT |
90 | #include <linux/init.h> |
91 | ||
92 | /****** RocketPort includes ******/ | |
93 | ||
94 | #include "rocket_int.h" | |
95 | #include "rocket.h" | |
96 | ||
97 | #define ROCKET_VERSION "2.09" | |
98 | #define ROCKET_DATE "12-June-2003" | |
99 | ||
100 | /****** RocketPort Local Variables ******/ | |
101 | ||
40565f19 JS |
102 | static void rp_do_poll(unsigned long dummy); |
103 | ||
1da177e4 LT |
104 | static struct tty_driver *rocket_driver; |
105 | ||
106 | static struct rocket_version driver_version = { | |
107 | ROCKET_VERSION, ROCKET_DATE | |
108 | }; | |
109 | ||
110 | static struct r_port *rp_table[MAX_RP_PORTS]; /* The main repository of serial port state information. */ | |
111 | static unsigned int xmit_flags[NUM_BOARDS]; /* Bit significant, indicates port had data to transmit. */ | |
112 | /* eg. Bit 0 indicates port 0 has xmit data, ... */ | |
113 | static atomic_t rp_num_ports_open; /* Number of serial ports open */ | |
40565f19 | 114 | static DEFINE_TIMER(rocket_timer, rp_do_poll, 0, 0); |
1da177e4 LT |
115 | |
116 | static unsigned long board1; /* ISA addresses, retrieved from rocketport.conf */ | |
117 | static unsigned long board2; | |
118 | static unsigned long board3; | |
119 | static unsigned long board4; | |
120 | static unsigned long controller; | |
121 | static int support_low_speed; | |
122 | static unsigned long modem1; | |
123 | static unsigned long modem2; | |
124 | static unsigned long modem3; | |
125 | static unsigned long modem4; | |
126 | static unsigned long pc104_1[8]; | |
127 | static unsigned long pc104_2[8]; | |
128 | static unsigned long pc104_3[8]; | |
129 | static unsigned long pc104_4[8]; | |
130 | static unsigned long *pc104[4] = { pc104_1, pc104_2, pc104_3, pc104_4 }; | |
131 | ||
132 | static int rp_baud_base[NUM_BOARDS]; /* Board config info (Someday make a per-board structure) */ | |
133 | static unsigned long rcktpt_io_addr[NUM_BOARDS]; | |
134 | static int rcktpt_type[NUM_BOARDS]; | |
135 | static int is_PCI[NUM_BOARDS]; | |
136 | static rocketModel_t rocketModel[NUM_BOARDS]; | |
137 | static int max_board; | |
31f35939 | 138 | static const struct tty_port_operations rocket_port_ops; |
1da177e4 LT |
139 | |
140 | /* | |
141 | * The following arrays define the interrupt bits corresponding to each AIOP. | |
142 | * These bits are different between the ISA and regular PCI boards and the | |
143 | * Universal PCI boards. | |
144 | */ | |
145 | ||
146 | static Word_t aiop_intr_bits[AIOP_CTL_SIZE] = { | |
147 | AIOP_INTR_BIT_0, | |
148 | AIOP_INTR_BIT_1, | |
149 | AIOP_INTR_BIT_2, | |
150 | AIOP_INTR_BIT_3 | |
151 | }; | |
152 | ||
153 | static Word_t upci_aiop_intr_bits[AIOP_CTL_SIZE] = { | |
154 | UPCI_AIOP_INTR_BIT_0, | |
155 | UPCI_AIOP_INTR_BIT_1, | |
156 | UPCI_AIOP_INTR_BIT_2, | |
157 | UPCI_AIOP_INTR_BIT_3 | |
158 | }; | |
159 | ||
f15313bf AB |
160 | static Byte_t RData[RDATASIZE] = { |
161 | 0x00, 0x09, 0xf6, 0x82, | |
162 | 0x02, 0x09, 0x86, 0xfb, | |
163 | 0x04, 0x09, 0x00, 0x0a, | |
164 | 0x06, 0x09, 0x01, 0x0a, | |
165 | 0x08, 0x09, 0x8a, 0x13, | |
166 | 0x0a, 0x09, 0xc5, 0x11, | |
167 | 0x0c, 0x09, 0x86, 0x85, | |
168 | 0x0e, 0x09, 0x20, 0x0a, | |
169 | 0x10, 0x09, 0x21, 0x0a, | |
170 | 0x12, 0x09, 0x41, 0xff, | |
171 | 0x14, 0x09, 0x82, 0x00, | |
172 | 0x16, 0x09, 0x82, 0x7b, | |
173 | 0x18, 0x09, 0x8a, 0x7d, | |
174 | 0x1a, 0x09, 0x88, 0x81, | |
175 | 0x1c, 0x09, 0x86, 0x7a, | |
176 | 0x1e, 0x09, 0x84, 0x81, | |
177 | 0x20, 0x09, 0x82, 0x7c, | |
178 | 0x22, 0x09, 0x0a, 0x0a | |
179 | }; | |
180 | ||
181 | static Byte_t RRegData[RREGDATASIZE] = { | |
182 | 0x00, 0x09, 0xf6, 0x82, /* 00: Stop Rx processor */ | |
183 | 0x08, 0x09, 0x8a, 0x13, /* 04: Tx software flow control */ | |
184 | 0x0a, 0x09, 0xc5, 0x11, /* 08: XON char */ | |
185 | 0x0c, 0x09, 0x86, 0x85, /* 0c: XANY */ | |
186 | 0x12, 0x09, 0x41, 0xff, /* 10: Rx mask char */ | |
187 | 0x14, 0x09, 0x82, 0x00, /* 14: Compare/Ignore #0 */ | |
188 | 0x16, 0x09, 0x82, 0x7b, /* 18: Compare #1 */ | |
189 | 0x18, 0x09, 0x8a, 0x7d, /* 1c: Compare #2 */ | |
190 | 0x1a, 0x09, 0x88, 0x81, /* 20: Interrupt #1 */ | |
191 | 0x1c, 0x09, 0x86, 0x7a, /* 24: Ignore/Replace #1 */ | |
192 | 0x1e, 0x09, 0x84, 0x81, /* 28: Interrupt #2 */ | |
193 | 0x20, 0x09, 0x82, 0x7c, /* 2c: Ignore/Replace #2 */ | |
194 | 0x22, 0x09, 0x0a, 0x0a /* 30: Rx FIFO Enable */ | |
195 | }; | |
196 | ||
197 | static CONTROLLER_T sController[CTL_SIZE] = { | |
198 | {-1, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, {0, 0, 0, 0}, | |
199 | {0, 0, 0, 0}, {-1, -1, -1, -1}, {0, 0, 0, 0}}, | |
200 | {-1, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, {0, 0, 0, 0}, | |
201 | {0, 0, 0, 0}, {-1, -1, -1, -1}, {0, 0, 0, 0}}, | |
202 | {-1, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, {0, 0, 0, 0}, | |
203 | {0, 0, 0, 0}, {-1, -1, -1, -1}, {0, 0, 0, 0}}, | |
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 | }; | |
207 | ||
208 | static Byte_t sBitMapClrTbl[8] = { | |
209 | 0xfe, 0xfd, 0xfb, 0xf7, 0xef, 0xdf, 0xbf, 0x7f | |
210 | }; | |
211 | ||
212 | static Byte_t sBitMapSetTbl[8] = { | |
213 | 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80 | |
214 | }; | |
215 | ||
216 | static int sClockPrescale = 0x14; | |
217 | ||
1da177e4 LT |
218 | /* |
219 | * Line number is the ttySIx number (x), the Minor number. We | |
220 | * assign them sequentially, starting at zero. The following | |
221 | * array keeps track of the line number assigned to a given board/aiop/channel. | |
222 | */ | |
223 | static unsigned char lineNumbers[MAX_RP_PORTS]; | |
224 | static unsigned long nextLineNumber; | |
225 | ||
226 | /***** RocketPort Static Prototypes *********/ | |
227 | static int __init init_ISA(int i); | |
228 | static void rp_wait_until_sent(struct tty_struct *tty, int timeout); | |
229 | static void rp_flush_buffer(struct tty_struct *tty); | |
230 | static void rmSpeakerReset(CONTROLLER_T * CtlP, unsigned long model); | |
231 | static unsigned char GetLineNumber(int ctrl, int aiop, int ch); | |
232 | static unsigned char SetLineNumber(int ctrl, int aiop, int ch); | |
233 | static void rp_start(struct tty_struct *tty); | |
f15313bf AB |
234 | static int sInitChan(CONTROLLER_T * CtlP, CHANNEL_T * ChP, int AiopNum, |
235 | int ChanNum); | |
236 | static void sSetInterfaceMode(CHANNEL_T * ChP, Byte_t mode); | |
237 | static void sFlushRxFIFO(CHANNEL_T * ChP); | |
238 | static void sFlushTxFIFO(CHANNEL_T * ChP); | |
239 | static void sEnInterrupts(CHANNEL_T * ChP, Word_t Flags); | |
240 | static void sDisInterrupts(CHANNEL_T * ChP, Word_t Flags); | |
241 | static void sModemReset(CONTROLLER_T * CtlP, int chan, int on); | |
242 | static void sPCIModemReset(CONTROLLER_T * CtlP, int chan, int on); | |
243 | static int sWriteTxPrioByte(CHANNEL_T * ChP, Byte_t Data); | |
244 | static int sPCIInitController(CONTROLLER_T * CtlP, int CtlNum, | |
245 | ByteIO_t * AiopIOList, int AiopIOListSize, | |
246 | WordIO_t ConfigIO, int IRQNum, Byte_t Frequency, | |
247 | int PeriodicOnly, int altChanRingIndicator, | |
248 | int UPCIRingInd); | |
249 | static int sInitController(CONTROLLER_T * CtlP, int CtlNum, ByteIO_t MudbacIO, | |
250 | ByteIO_t * AiopIOList, int AiopIOListSize, | |
251 | int IRQNum, Byte_t Frequency, int PeriodicOnly); | |
252 | static int sReadAiopID(ByteIO_t io); | |
253 | static int sReadAiopNumChan(WordIO_t io); | |
1da177e4 | 254 | |
1da177e4 LT |
255 | MODULE_AUTHOR("Theodore Ts'o"); |
256 | MODULE_DESCRIPTION("Comtrol RocketPort driver"); | |
257 | module_param(board1, ulong, 0); | |
258 | MODULE_PARM_DESC(board1, "I/O port for (ISA) board #1"); | |
259 | module_param(board2, ulong, 0); | |
260 | MODULE_PARM_DESC(board2, "I/O port for (ISA) board #2"); | |
261 | module_param(board3, ulong, 0); | |
262 | MODULE_PARM_DESC(board3, "I/O port for (ISA) board #3"); | |
263 | module_param(board4, ulong, 0); | |
264 | MODULE_PARM_DESC(board4, "I/O port for (ISA) board #4"); | |
265 | module_param(controller, ulong, 0); | |
266 | MODULE_PARM_DESC(controller, "I/O port for (ISA) rocketport controller"); | |
267 | module_param(support_low_speed, bool, 0); | |
268 | MODULE_PARM_DESC(support_low_speed, "1 means support 50 baud, 0 means support 460400 baud"); | |
269 | module_param(modem1, ulong, 0); | |
270 | MODULE_PARM_DESC(modem1, "1 means (ISA) board #1 is a RocketModem"); | |
271 | module_param(modem2, ulong, 0); | |
272 | MODULE_PARM_DESC(modem2, "1 means (ISA) board #2 is a RocketModem"); | |
273 | module_param(modem3, ulong, 0); | |
274 | MODULE_PARM_DESC(modem3, "1 means (ISA) board #3 is a RocketModem"); | |
275 | module_param(modem4, ulong, 0); | |
276 | MODULE_PARM_DESC(modem4, "1 means (ISA) board #4 is a RocketModem"); | |
277 | module_param_array(pc104_1, ulong, NULL, 0); | |
278 | MODULE_PARM_DESC(pc104_1, "set interface types for ISA(PC104) board #1 (e.g. pc104_1=232,232,485,485,..."); | |
279 | module_param_array(pc104_2, ulong, NULL, 0); | |
280 | MODULE_PARM_DESC(pc104_2, "set interface types for ISA(PC104) board #2 (e.g. pc104_2=232,232,485,485,..."); | |
281 | module_param_array(pc104_3, ulong, NULL, 0); | |
282 | MODULE_PARM_DESC(pc104_3, "set interface types for ISA(PC104) board #3 (e.g. pc104_3=232,232,485,485,..."); | |
283 | module_param_array(pc104_4, ulong, NULL, 0); | |
284 | MODULE_PARM_DESC(pc104_4, "set interface types for ISA(PC104) board #4 (e.g. pc104_4=232,232,485,485,..."); | |
285 | ||
d269cdd0 | 286 | static int rp_init(void); |
1da177e4 LT |
287 | static void rp_cleanup_module(void); |
288 | ||
289 | module_init(rp_init); | |
290 | module_exit(rp_cleanup_module); | |
291 | ||
1da177e4 | 292 | |
1da177e4 | 293 | MODULE_LICENSE("Dual BSD/GPL"); |
1da177e4 LT |
294 | |
295 | /*************************************************************************/ | |
296 | /* Module code starts here */ | |
297 | ||
298 | static inline int rocket_paranoia_check(struct r_port *info, | |
299 | const char *routine) | |
300 | { | |
301 | #ifdef ROCKET_PARANOIA_CHECK | |
302 | if (!info) | |
303 | return 1; | |
304 | if (info->magic != RPORT_MAGIC) { | |
68562b79 JS |
305 | printk(KERN_WARNING "Warning: bad magic number for rocketport " |
306 | "struct in %s\n", routine); | |
1da177e4 LT |
307 | return 1; |
308 | } | |
309 | #endif | |
310 | return 0; | |
311 | } | |
312 | ||
313 | ||
314 | /* Serial port receive data function. Called (from timer poll) when an AIOPIC signals | |
315 | * that receive data is present on a serial port. Pulls data from FIFO, moves it into the | |
316 | * tty layer. | |
317 | */ | |
318 | static void rp_do_receive(struct r_port *info, | |
319 | struct tty_struct *tty, | |
320 | CHANNEL_t * cp, unsigned int ChanStatus) | |
321 | { | |
322 | unsigned int CharNStat; | |
cc44a817 PF |
323 | int ToRecv, wRecv, space; |
324 | unsigned char *cbuf; | |
1da177e4 LT |
325 | |
326 | ToRecv = sGetRxCnt(cp); | |
1da177e4 | 327 | #ifdef ROCKET_DEBUG_INTR |
68562b79 | 328 | printk(KERN_INFO "rp_do_receive(%d)...\n", ToRecv); |
1da177e4 | 329 | #endif |
cc44a817 PF |
330 | if (ToRecv == 0) |
331 | return; | |
33f0f88f | 332 | |
1da177e4 LT |
333 | /* |
334 | * if status indicates there are errored characters in the | |
335 | * FIFO, then enter status mode (a word in FIFO holds | |
336 | * character and status). | |
337 | */ | |
338 | if (ChanStatus & (RXFOVERFL | RXBREAK | RXFRAME | RXPARITY)) { | |
339 | if (!(ChanStatus & STATMODE)) { | |
340 | #ifdef ROCKET_DEBUG_RECEIVE | |
68562b79 | 341 | printk(KERN_INFO "Entering STATMODE...\n"); |
1da177e4 LT |
342 | #endif |
343 | ChanStatus |= STATMODE; | |
344 | sEnRxStatusMode(cp); | |
345 | } | |
346 | } | |
347 | ||
348 | /* | |
349 | * if we previously entered status mode, then read down the | |
350 | * FIFO one word at a time, pulling apart the character and | |
351 | * the status. Update error counters depending on status | |
352 | */ | |
353 | if (ChanStatus & STATMODE) { | |
354 | #ifdef ROCKET_DEBUG_RECEIVE | |
68562b79 JS |
355 | printk(KERN_INFO "Ignore %x, read %x...\n", |
356 | info->ignore_status_mask, info->read_status_mask); | |
1da177e4 LT |
357 | #endif |
358 | while (ToRecv) { | |
cc44a817 PF |
359 | char flag; |
360 | ||
1da177e4 LT |
361 | CharNStat = sInW(sGetTxRxDataIO(cp)); |
362 | #ifdef ROCKET_DEBUG_RECEIVE | |
68562b79 | 363 | printk(KERN_INFO "%x...\n", CharNStat); |
1da177e4 LT |
364 | #endif |
365 | if (CharNStat & STMBREAKH) | |
366 | CharNStat &= ~(STMFRAMEH | STMPARITYH); | |
367 | if (CharNStat & info->ignore_status_mask) { | |
368 | ToRecv--; | |
369 | continue; | |
370 | } | |
371 | CharNStat &= info->read_status_mask; | |
372 | if (CharNStat & STMBREAKH) | |
cc44a817 | 373 | flag = TTY_BREAK; |
1da177e4 | 374 | else if (CharNStat & STMPARITYH) |
cc44a817 | 375 | flag = TTY_PARITY; |
1da177e4 | 376 | else if (CharNStat & STMFRAMEH) |
cc44a817 | 377 | flag = TTY_FRAME; |
1da177e4 | 378 | else if (CharNStat & STMRCVROVRH) |
cc44a817 | 379 | flag = TTY_OVERRUN; |
1da177e4 | 380 | else |
cc44a817 PF |
381 | flag = TTY_NORMAL; |
382 | tty_insert_flip_char(tty, CharNStat & 0xff, flag); | |
1da177e4 LT |
383 | ToRecv--; |
384 | } | |
385 | ||
386 | /* | |
387 | * after we've emptied the FIFO in status mode, turn | |
388 | * status mode back off | |
389 | */ | |
390 | if (sGetRxCnt(cp) == 0) { | |
391 | #ifdef ROCKET_DEBUG_RECEIVE | |
392 | printk(KERN_INFO "Status mode off.\n"); | |
393 | #endif | |
394 | sDisRxStatusMode(cp); | |
395 | } | |
396 | } else { | |
397 | /* | |
398 | * we aren't in status mode, so read down the FIFO two | |
399 | * characters at time by doing repeated word IO | |
400 | * transfer. | |
401 | */ | |
cc44a817 PF |
402 | space = tty_prepare_flip_string(tty, &cbuf, ToRecv); |
403 | if (space < ToRecv) { | |
404 | #ifdef ROCKET_DEBUG_RECEIVE | |
405 | printk(KERN_INFO "rp_do_receive:insufficient space ToRecv=%d space=%d\n", ToRecv, space); | |
406 | #endif | |
407 | if (space <= 0) | |
408 | return; | |
409 | ToRecv = space; | |
410 | } | |
1da177e4 LT |
411 | wRecv = ToRecv >> 1; |
412 | if (wRecv) | |
413 | sInStrW(sGetTxRxDataIO(cp), (unsigned short *) cbuf, wRecv); | |
414 | if (ToRecv & 1) | |
415 | cbuf[ToRecv - 1] = sInB(sGetTxRxDataIO(cp)); | |
1da177e4 LT |
416 | } |
417 | /* Push the data up to the tty layer */ | |
cc44a817 | 418 | tty_flip_buffer_push(tty); |
1da177e4 LT |
419 | } |
420 | ||
421 | /* | |
422 | * Serial port transmit data function. Called from the timer polling loop as a | |
423 | * result of a bit set in xmit_flags[], indicating data (from the tty layer) is ready | |
424 | * to be sent out the serial port. Data is buffered in rp_table[line].xmit_buf, it is | |
425 | * moved to the port's xmit FIFO. *info is critical data, protected by spinlocks. | |
426 | */ | |
427 | static void rp_do_transmit(struct r_port *info) | |
428 | { | |
429 | int c; | |
430 | CHANNEL_t *cp = &info->channel; | |
431 | struct tty_struct *tty; | |
432 | unsigned long flags; | |
433 | ||
434 | #ifdef ROCKET_DEBUG_INTR | |
68562b79 | 435 | printk(KERN_DEBUG "%s\n", __func__); |
1da177e4 LT |
436 | #endif |
437 | if (!info) | |
438 | return; | |
47b01b3a AC |
439 | tty = tty_port_tty_get(&info->port); |
440 | ||
441 | if (tty == NULL) { | |
442 | printk(KERN_WARNING "rp: WARNING %s called with tty==NULL\n", __func__); | |
1da177e4 LT |
443 | clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]); |
444 | return; | |
445 | } | |
446 | ||
447 | spin_lock_irqsave(&info->slock, flags); | |
1da177e4 LT |
448 | info->xmit_fifo_room = TXFIFO_SIZE - sGetTxCnt(cp); |
449 | ||
450 | /* Loop sending data to FIFO until done or FIFO full */ | |
451 | while (1) { | |
452 | if (tty->stopped || tty->hw_stopped) | |
453 | break; | |
709107fc HH |
454 | c = min(info->xmit_fifo_room, info->xmit_cnt); |
455 | c = min(c, XMIT_BUF_SIZE - info->xmit_tail); | |
1da177e4 LT |
456 | if (c <= 0 || info->xmit_fifo_room <= 0) |
457 | break; | |
458 | sOutStrW(sGetTxRxDataIO(cp), (unsigned short *) (info->xmit_buf + info->xmit_tail), c / 2); | |
459 | if (c & 1) | |
460 | sOutB(sGetTxRxDataIO(cp), info->xmit_buf[info->xmit_tail + c - 1]); | |
461 | info->xmit_tail += c; | |
462 | info->xmit_tail &= XMIT_BUF_SIZE - 1; | |
463 | info->xmit_cnt -= c; | |
464 | info->xmit_fifo_room -= c; | |
465 | #ifdef ROCKET_DEBUG_INTR | |
68562b79 | 466 | printk(KERN_INFO "tx %d chars...\n", c); |
1da177e4 LT |
467 | #endif |
468 | } | |
469 | ||
470 | if (info->xmit_cnt == 0) | |
471 | clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]); | |
472 | ||
473 | if (info->xmit_cnt < WAKEUP_CHARS) { | |
474 | tty_wakeup(tty); | |
1da177e4 LT |
475 | #ifdef ROCKETPORT_HAVE_POLL_WAIT |
476 | wake_up_interruptible(&tty->poll_wait); | |
477 | #endif | |
478 | } | |
479 | ||
480 | spin_unlock_irqrestore(&info->slock, flags); | |
47b01b3a | 481 | tty_kref_put(tty); |
1da177e4 LT |
482 | |
483 | #ifdef ROCKET_DEBUG_INTR | |
68562b79 | 484 | printk(KERN_DEBUG "(%d,%d,%d,%d)...\n", info->xmit_cnt, info->xmit_head, |
1da177e4 LT |
485 | info->xmit_tail, info->xmit_fifo_room); |
486 | #endif | |
487 | } | |
488 | ||
489 | /* | |
490 | * Called when a serial port signals it has read data in it's RX FIFO. | |
491 | * It checks what interrupts are pending and services them, including | |
492 | * receiving serial data. | |
493 | */ | |
494 | static void rp_handle_port(struct r_port *info) | |
495 | { | |
496 | CHANNEL_t *cp; | |
497 | struct tty_struct *tty; | |
498 | unsigned int IntMask, ChanStatus; | |
499 | ||
500 | if (!info) | |
501 | return; | |
502 | ||
21bed701 | 503 | if ((info->port.flags & ASYNC_INITIALIZED) == 0) { |
68562b79 JS |
504 | printk(KERN_WARNING "rp: WARNING: rp_handle_port called with " |
505 | "info->flags & NOT_INIT\n"); | |
1da177e4 LT |
506 | return; |
507 | } | |
47b01b3a AC |
508 | tty = tty_port_tty_get(&info->port); |
509 | if (!tty) { | |
68562b79 | 510 | printk(KERN_WARNING "rp: WARNING: rp_handle_port called with " |
47b01b3a | 511 | "tty==NULL\n"); |
1da177e4 LT |
512 | return; |
513 | } | |
514 | cp = &info->channel; | |
1da177e4 LT |
515 | |
516 | IntMask = sGetChanIntID(cp) & info->intmask; | |
517 | #ifdef ROCKET_DEBUG_INTR | |
68562b79 | 518 | printk(KERN_INFO "rp_interrupt %02x...\n", IntMask); |
1da177e4 LT |
519 | #endif |
520 | ChanStatus = sGetChanStatus(cp); | |
521 | if (IntMask & RXF_TRIG) { /* Rx FIFO trigger level */ | |
522 | rp_do_receive(info, tty, cp, ChanStatus); | |
523 | } | |
524 | if (IntMask & DELTA_CD) { /* CD change */ | |
525 | #if (defined(ROCKET_DEBUG_OPEN) || defined(ROCKET_DEBUG_INTR) || defined(ROCKET_DEBUG_HANGUP)) | |
68562b79 | 526 | printk(KERN_INFO "ttyR%d CD now %s...\n", info->line, |
1da177e4 LT |
527 | (ChanStatus & CD_ACT) ? "on" : "off"); |
528 | #endif | |
529 | if (!(ChanStatus & CD_ACT) && info->cd_status) { | |
530 | #ifdef ROCKET_DEBUG_HANGUP | |
531 | printk(KERN_INFO "CD drop, calling hangup.\n"); | |
532 | #endif | |
533 | tty_hangup(tty); | |
534 | } | |
535 | info->cd_status = (ChanStatus & CD_ACT) ? 1 : 0; | |
e60a1084 | 536 | wake_up_interruptible(&info->port.open_wait); |
1da177e4 LT |
537 | } |
538 | #ifdef ROCKET_DEBUG_INTR | |
539 | if (IntMask & DELTA_CTS) { /* CTS change */ | |
540 | printk(KERN_INFO "CTS change...\n"); | |
541 | } | |
542 | if (IntMask & DELTA_DSR) { /* DSR change */ | |
543 | printk(KERN_INFO "DSR change...\n"); | |
544 | } | |
545 | #endif | |
47b01b3a | 546 | tty_kref_put(tty); |
1da177e4 LT |
547 | } |
548 | ||
549 | /* | |
550 | * The top level polling routine. Repeats every 1/100 HZ (10ms). | |
551 | */ | |
552 | static void rp_do_poll(unsigned long dummy) | |
553 | { | |
554 | CONTROLLER_t *ctlp; | |
6c0286b1 JS |
555 | int ctrl, aiop, ch, line; |
556 | unsigned int xmitmask, i; | |
1da177e4 LT |
557 | unsigned int CtlMask; |
558 | unsigned char AiopMask; | |
559 | Word_t bit; | |
560 | ||
561 | /* Walk through all the boards (ctrl's) */ | |
562 | for (ctrl = 0; ctrl < max_board; ctrl++) { | |
563 | if (rcktpt_io_addr[ctrl] <= 0) | |
564 | continue; | |
565 | ||
566 | /* Get a ptr to the board's control struct */ | |
567 | ctlp = sCtlNumToCtlPtr(ctrl); | |
568 | ||
3a4fa0a2 | 569 | /* Get the interrupt status from the board */ |
1da177e4 LT |
570 | #ifdef CONFIG_PCI |
571 | if (ctlp->BusType == isPCI) | |
572 | CtlMask = sPCIGetControllerIntStatus(ctlp); | |
573 | else | |
574 | #endif | |
575 | CtlMask = sGetControllerIntStatus(ctlp); | |
576 | ||
577 | /* Check if any AIOP read bits are set */ | |
578 | for (aiop = 0; CtlMask; aiop++) { | |
579 | bit = ctlp->AiopIntrBits[aiop]; | |
580 | if (CtlMask & bit) { | |
581 | CtlMask &= ~bit; | |
582 | AiopMask = sGetAiopIntStatus(ctlp, aiop); | |
583 | ||
584 | /* Check if any port read bits are set */ | |
585 | for (ch = 0; AiopMask; AiopMask >>= 1, ch++) { | |
586 | if (AiopMask & 1) { | |
587 | ||
588 | /* Get the line number (/dev/ttyRx number). */ | |
589 | /* Read the data from the port. */ | |
590 | line = GetLineNumber(ctrl, aiop, ch); | |
591 | rp_handle_port(rp_table[line]); | |
592 | } | |
593 | } | |
594 | } | |
595 | } | |
596 | ||
597 | xmitmask = xmit_flags[ctrl]; | |
598 | ||
599 | /* | |
600 | * xmit_flags contains bit-significant flags, indicating there is data | |
601 | * to xmit on the port. Bit 0 is port 0 on this board, bit 1 is port | |
602 | * 1, ... (32 total possible). The variable i has the aiop and ch | |
603 | * numbers encoded in it (port 0-7 are aiop0, 8-15 are aiop1, etc). | |
604 | */ | |
605 | if (xmitmask) { | |
606 | for (i = 0; i < rocketModel[ctrl].numPorts; i++) { | |
607 | if (xmitmask & (1 << i)) { | |
608 | aiop = (i & 0x18) >> 3; | |
609 | ch = i & 0x07; | |
610 | line = GetLineNumber(ctrl, aiop, ch); | |
611 | rp_do_transmit(rp_table[line]); | |
612 | } | |
613 | } | |
614 | } | |
615 | } | |
616 | ||
617 | /* | |
618 | * Reset the timer so we get called at the next clock tick (10ms). | |
619 | */ | |
620 | if (atomic_read(&rp_num_ports_open)) | |
621 | mod_timer(&rocket_timer, jiffies + POLL_PERIOD); | |
622 | } | |
623 | ||
624 | /* | |
625 | * Initializes the r_port structure for a port, as well as enabling the port on | |
626 | * the board. | |
627 | * Inputs: board, aiop, chan numbers | |
628 | */ | |
629 | static void init_r_port(int board, int aiop, int chan, struct pci_dev *pci_dev) | |
630 | { | |
631 | unsigned rocketMode; | |
632 | struct r_port *info; | |
633 | int line; | |
634 | CONTROLLER_T *ctlp; | |
635 | ||
636 | /* Get the next available line number */ | |
637 | line = SetLineNumber(board, aiop, chan); | |
638 | ||
639 | ctlp = sCtlNumToCtlPtr(board); | |
640 | ||
641 | /* Get a r_port struct for the port, fill it in and save it globally, indexed by line number */ | |
dd00cc48 | 642 | info = kzalloc(sizeof (struct r_port), GFP_KERNEL); |
1da177e4 | 643 | if (!info) { |
68562b79 JS |
644 | printk(KERN_ERR "Couldn't allocate info struct for line #%d\n", |
645 | line); | |
1da177e4 LT |
646 | return; |
647 | } | |
1da177e4 LT |
648 | |
649 | info->magic = RPORT_MAGIC; | |
650 | info->line = line; | |
651 | info->ctlp = ctlp; | |
652 | info->board = board; | |
653 | info->aiop = aiop; | |
654 | info->chan = chan; | |
31f35939 AC |
655 | tty_port_init(&info->port); |
656 | info->port.ops = &rocket_port_ops; | |
8cf5a8c5 | 657 | init_completion(&info->close_wait); |
1da177e4 LT |
658 | info->flags &= ~ROCKET_MODE_MASK; |
659 | switch (pc104[board][line]) { | |
660 | case 422: | |
661 | info->flags |= ROCKET_MODE_RS422; | |
662 | break; | |
663 | case 485: | |
664 | info->flags |= ROCKET_MODE_RS485; | |
665 | break; | |
666 | case 232: | |
667 | default: | |
668 | info->flags |= ROCKET_MODE_RS232; | |
669 | break; | |
670 | } | |
671 | ||
672 | info->intmask = RXF_TRIG | TXFIFO_MT | SRC_INT | DELTA_CD | DELTA_CTS | DELTA_DSR; | |
673 | if (sInitChan(ctlp, &info->channel, aiop, chan) == 0) { | |
68562b79 JS |
674 | printk(KERN_ERR "RocketPort sInitChan(%d, %d, %d) failed!\n", |
675 | board, aiop, chan); | |
1da177e4 LT |
676 | kfree(info); |
677 | return; | |
678 | } | |
679 | ||
680 | rocketMode = info->flags & ROCKET_MODE_MASK; | |
681 | ||
682 | if ((info->flags & ROCKET_RTS_TOGGLE) || (rocketMode == ROCKET_MODE_RS485)) | |
683 | sEnRTSToggle(&info->channel); | |
684 | else | |
685 | sDisRTSToggle(&info->channel); | |
686 | ||
687 | if (ctlp->boardType == ROCKET_TYPE_PC104) { | |
688 | switch (rocketMode) { | |
689 | case ROCKET_MODE_RS485: | |
690 | sSetInterfaceMode(&info->channel, InterfaceModeRS485); | |
691 | break; | |
692 | case ROCKET_MODE_RS422: | |
693 | sSetInterfaceMode(&info->channel, InterfaceModeRS422); | |
694 | break; | |
695 | case ROCKET_MODE_RS232: | |
696 | default: | |
697 | if (info->flags & ROCKET_RTS_TOGGLE) | |
698 | sSetInterfaceMode(&info->channel, InterfaceModeRS232T); | |
699 | else | |
700 | sSetInterfaceMode(&info->channel, InterfaceModeRS232); | |
701 | break; | |
702 | } | |
703 | } | |
704 | spin_lock_init(&info->slock); | |
69f545ea | 705 | mutex_init(&info->write_mtx); |
1da177e4 | 706 | rp_table[line] = info; |
ac6aec2f JS |
707 | tty_register_device(rocket_driver, line, pci_dev ? &pci_dev->dev : |
708 | NULL); | |
1da177e4 LT |
709 | } |
710 | ||
711 | /* | |
712 | * Configures a rocketport port according to its termio settings. Called from | |
713 | * user mode into the driver (exception handler). *info CD manipulation is spinlock protected. | |
714 | */ | |
47b01b3a | 715 | static void configure_r_port(struct tty_struct *tty, struct r_port *info, |
606d099c | 716 | struct ktermios *old_termios) |
1da177e4 LT |
717 | { |
718 | unsigned cflag; | |
719 | unsigned long flags; | |
720 | unsigned rocketMode; | |
721 | int bits, baud, divisor; | |
722 | CHANNEL_t *cp; | |
47b01b3a | 723 | struct ktermios *t = tty->termios; |
1da177e4 | 724 | |
1da177e4 | 725 | cp = &info->channel; |
6df3526b | 726 | cflag = t->c_cflag; |
1da177e4 LT |
727 | |
728 | /* Byte size and parity */ | |
729 | if ((cflag & CSIZE) == CS8) { | |
730 | sSetData8(cp); | |
731 | bits = 10; | |
732 | } else { | |
733 | sSetData7(cp); | |
734 | bits = 9; | |
735 | } | |
736 | if (cflag & CSTOPB) { | |
737 | sSetStop2(cp); | |
738 | bits++; | |
739 | } else { | |
740 | sSetStop1(cp); | |
741 | } | |
742 | ||
743 | if (cflag & PARENB) { | |
744 | sEnParity(cp); | |
745 | bits++; | |
746 | if (cflag & PARODD) { | |
747 | sSetOddParity(cp); | |
748 | } else { | |
749 | sSetEvenParity(cp); | |
750 | } | |
751 | } else { | |
752 | sDisParity(cp); | |
753 | } | |
754 | ||
755 | /* baud rate */ | |
47b01b3a | 756 | baud = tty_get_baud_rate(tty); |
1da177e4 LT |
757 | if (!baud) |
758 | baud = 9600; | |
759 | divisor = ((rp_baud_base[info->board] + (baud >> 1)) / baud) - 1; | |
760 | if ((divisor >= 8192 || divisor < 0) && old_termios) { | |
6df3526b | 761 | baud = tty_termios_baud_rate(old_termios); |
1da177e4 LT |
762 | if (!baud) |
763 | baud = 9600; | |
764 | divisor = (rp_baud_base[info->board] / baud) - 1; | |
765 | } | |
766 | if (divisor >= 8192 || divisor < 0) { | |
767 | baud = 9600; | |
768 | divisor = (rp_baud_base[info->board] / baud) - 1; | |
769 | } | |
770 | info->cps = baud / bits; | |
771 | sSetBaud(cp, divisor); | |
772 | ||
6df3526b | 773 | /* FIXME: Should really back compute a baud rate from the divisor */ |
47b01b3a | 774 | tty_encode_baud_rate(tty, baud, baud); |
6df3526b | 775 | |
1da177e4 LT |
776 | if (cflag & CRTSCTS) { |
777 | info->intmask |= DELTA_CTS; | |
778 | sEnCTSFlowCtl(cp); | |
779 | } else { | |
780 | info->intmask &= ~DELTA_CTS; | |
781 | sDisCTSFlowCtl(cp); | |
782 | } | |
783 | if (cflag & CLOCAL) { | |
784 | info->intmask &= ~DELTA_CD; | |
785 | } else { | |
786 | spin_lock_irqsave(&info->slock, flags); | |
787 | if (sGetChanStatus(cp) & CD_ACT) | |
788 | info->cd_status = 1; | |
789 | else | |
790 | info->cd_status = 0; | |
791 | info->intmask |= DELTA_CD; | |
792 | spin_unlock_irqrestore(&info->slock, flags); | |
793 | } | |
794 | ||
795 | /* | |
796 | * Handle software flow control in the board | |
797 | */ | |
798 | #ifdef ROCKET_SOFT_FLOW | |
47b01b3a | 799 | if (I_IXON(tty)) { |
1da177e4 | 800 | sEnTxSoftFlowCtl(cp); |
47b01b3a | 801 | if (I_IXANY(tty)) { |
1da177e4 LT |
802 | sEnIXANY(cp); |
803 | } else { | |
804 | sDisIXANY(cp); | |
805 | } | |
47b01b3a AC |
806 | sSetTxXONChar(cp, START_CHAR(tty)); |
807 | sSetTxXOFFChar(cp, STOP_CHAR(tty)); | |
1da177e4 LT |
808 | } else { |
809 | sDisTxSoftFlowCtl(cp); | |
810 | sDisIXANY(cp); | |
811 | sClrTxXOFF(cp); | |
812 | } | |
813 | #endif | |
814 | ||
815 | /* | |
816 | * Set up ignore/read mask words | |
817 | */ | |
818 | info->read_status_mask = STMRCVROVRH | 0xFF; | |
47b01b3a | 819 | if (I_INPCK(tty)) |
1da177e4 | 820 | info->read_status_mask |= STMFRAMEH | STMPARITYH; |
47b01b3a | 821 | if (I_BRKINT(tty) || I_PARMRK(tty)) |
1da177e4 LT |
822 | info->read_status_mask |= STMBREAKH; |
823 | ||
824 | /* | |
825 | * Characters to ignore | |
826 | */ | |
827 | info->ignore_status_mask = 0; | |
47b01b3a | 828 | if (I_IGNPAR(tty)) |
1da177e4 | 829 | info->ignore_status_mask |= STMFRAMEH | STMPARITYH; |
47b01b3a | 830 | if (I_IGNBRK(tty)) { |
1da177e4 LT |
831 | info->ignore_status_mask |= STMBREAKH; |
832 | /* | |
833 | * If we're ignoring parity and break indicators, | |
834 | * ignore overruns too. (For real raw support). | |
835 | */ | |
47b01b3a | 836 | if (I_IGNPAR(tty)) |
1da177e4 LT |
837 | info->ignore_status_mask |= STMRCVROVRH; |
838 | } | |
839 | ||
840 | rocketMode = info->flags & ROCKET_MODE_MASK; | |
841 | ||
842 | if ((info->flags & ROCKET_RTS_TOGGLE) | |
843 | || (rocketMode == ROCKET_MODE_RS485)) | |
844 | sEnRTSToggle(cp); | |
845 | else | |
846 | sDisRTSToggle(cp); | |
847 | ||
848 | sSetRTS(&info->channel); | |
849 | ||
850 | if (cp->CtlP->boardType == ROCKET_TYPE_PC104) { | |
851 | switch (rocketMode) { | |
852 | case ROCKET_MODE_RS485: | |
853 | sSetInterfaceMode(cp, InterfaceModeRS485); | |
854 | break; | |
855 | case ROCKET_MODE_RS422: | |
856 | sSetInterfaceMode(cp, InterfaceModeRS422); | |
857 | break; | |
858 | case ROCKET_MODE_RS232: | |
859 | default: | |
860 | if (info->flags & ROCKET_RTS_TOGGLE) | |
861 | sSetInterfaceMode(cp, InterfaceModeRS232T); | |
862 | else | |
863 | sSetInterfaceMode(cp, InterfaceModeRS232); | |
864 | break; | |
865 | } | |
866 | } | |
867 | } | |
868 | ||
31f35939 AC |
869 | static int carrier_raised(struct tty_port *port) |
870 | { | |
871 | struct r_port *info = container_of(port, struct r_port, port); | |
872 | return (sGetChanStatusLo(&info->channel) & CD_ACT) ? 1 : 0; | |
873 | } | |
874 | ||
5d951fb4 AC |
875 | static void raise_dtr_rts(struct tty_port *port) |
876 | { | |
877 | struct r_port *info = container_of(port, struct r_port, port); | |
878 | sSetDTR(&info->channel); | |
879 | sSetRTS(&info->channel); | |
880 | } | |
881 | ||
1da177e4 LT |
882 | /* |
883 | * Exception handler that opens a serial port. Creates xmit_buf storage, fills in | |
884 | * port's r_port struct. Initializes the port hardware. | |
885 | */ | |
886 | static int rp_open(struct tty_struct *tty, struct file *filp) | |
887 | { | |
888 | struct r_port *info; | |
fba85e01 | 889 | struct tty_port *port; |
1da177e4 LT |
890 | int line = 0, retval; |
891 | CHANNEL_t *cp; | |
892 | unsigned long page; | |
893 | ||
f6de0c98 | 894 | line = tty->index; |
fba85e01 | 895 | if (line < 0 || line >= MAX_RP_PORTS || ((info = rp_table[line]) == NULL)) |
1da177e4 | 896 | return -ENXIO; |
fba85e01 AC |
897 | port = &info->port; |
898 | ||
1da177e4 LT |
899 | page = __get_free_page(GFP_KERNEL); |
900 | if (!page) | |
901 | return -ENOMEM; | |
902 | ||
fba85e01 | 903 | if (port->flags & ASYNC_CLOSING) { |
8cf5a8c5 | 904 | retval = wait_for_completion_interruptible(&info->close_wait); |
1da177e4 | 905 | free_page(page); |
8cf5a8c5 JS |
906 | if (retval) |
907 | return retval; | |
fba85e01 | 908 | return ((port->flags & ASYNC_HUP_NOTIFY) ? -EAGAIN : -ERESTARTSYS); |
1da177e4 LT |
909 | } |
910 | ||
911 | /* | |
912 | * We must not sleep from here until the port is marked fully in use. | |
913 | */ | |
914 | if (info->xmit_buf) | |
915 | free_page(page); | |
916 | else | |
917 | info->xmit_buf = (unsigned char *) page; | |
918 | ||
919 | tty->driver_data = info; | |
fba85e01 | 920 | tty_port_tty_set(port, tty); |
1da177e4 | 921 | |
fba85e01 | 922 | if (port->count++ == 0) { |
1da177e4 LT |
923 | atomic_inc(&rp_num_ports_open); |
924 | ||
925 | #ifdef ROCKET_DEBUG_OPEN | |
68562b79 JS |
926 | printk(KERN_INFO "rocket mod++ = %d...\n", |
927 | atomic_read(&rp_num_ports_open)); | |
1da177e4 LT |
928 | #endif |
929 | } | |
930 | #ifdef ROCKET_DEBUG_OPEN | |
e60a1084 | 931 | printk(KERN_INFO "rp_open ttyR%d, count=%d\n", info->line, info->port.count); |
1da177e4 LT |
932 | #endif |
933 | ||
934 | /* | |
935 | * Info->count is now 1; so it's safe to sleep now. | |
936 | */ | |
fba85e01 | 937 | if (!test_bit(ASYNC_INITIALIZED, &port->flags)) { |
1da177e4 LT |
938 | cp = &info->channel; |
939 | sSetRxTrigger(cp, TRIG_1); | |
940 | if (sGetChanStatus(cp) & CD_ACT) | |
941 | info->cd_status = 1; | |
942 | else | |
943 | info->cd_status = 0; | |
944 | sDisRxStatusMode(cp); | |
945 | sFlushRxFIFO(cp); | |
946 | sFlushTxFIFO(cp); | |
947 | ||
948 | sEnInterrupts(cp, (TXINT_EN | MCINT_EN | RXINT_EN | SRCINT_EN | CHANINT_EN)); | |
949 | sSetRxTrigger(cp, TRIG_1); | |
950 | ||
951 | sGetChanStatus(cp); | |
952 | sDisRxStatusMode(cp); | |
953 | sClrTxXOFF(cp); | |
954 | ||
955 | sDisCTSFlowCtl(cp); | |
956 | sDisTxSoftFlowCtl(cp); | |
957 | ||
958 | sEnRxFIFO(cp); | |
959 | sEnTransmit(cp); | |
960 | ||
fba85e01 | 961 | set_bit(ASYNC_INITIALIZED, &info->port.flags); |
1da177e4 LT |
962 | |
963 | /* | |
964 | * Set up the tty->alt_speed kludge | |
965 | */ | |
966 | if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_HI) | |
47b01b3a | 967 | tty->alt_speed = 57600; |
1da177e4 | 968 | if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_VHI) |
47b01b3a | 969 | tty->alt_speed = 115200; |
1da177e4 | 970 | if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_SHI) |
47b01b3a | 971 | tty->alt_speed = 230400; |
1da177e4 | 972 | if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_WARP) |
47b01b3a | 973 | tty->alt_speed = 460800; |
1da177e4 | 974 | |
47b01b3a | 975 | configure_r_port(tty, info, NULL); |
1da177e4 LT |
976 | if (tty->termios->c_cflag & CBAUD) { |
977 | sSetDTR(cp); | |
978 | sSetRTS(cp); | |
979 | } | |
980 | } | |
981 | /* Starts (or resets) the maint polling loop */ | |
982 | mod_timer(&rocket_timer, jiffies + POLL_PERIOD); | |
983 | ||
fba85e01 | 984 | retval = tty_port_block_til_ready(port, tty, filp); |
1da177e4 LT |
985 | if (retval) { |
986 | #ifdef ROCKET_DEBUG_OPEN | |
987 | printk(KERN_INFO "rp_open returning after block_til_ready with %d\n", retval); | |
988 | #endif | |
989 | return retval; | |
990 | } | |
991 | return 0; | |
992 | } | |
993 | ||
994 | /* | |
e60a1084 | 995 | * Exception handler that closes a serial port. info->port.count is considered critical. |
1da177e4 LT |
996 | */ |
997 | static void rp_close(struct tty_struct *tty, struct file *filp) | |
998 | { | |
c9f19e96 | 999 | struct r_port *info = tty->driver_data; |
c1314a49 | 1000 | struct tty_port *port = &info->port; |
1da177e4 LT |
1001 | int timeout; |
1002 | CHANNEL_t *cp; | |
1003 | ||
1004 | if (rocket_paranoia_check(info, "rp_close")) | |
1005 | return; | |
1006 | ||
1007 | #ifdef ROCKET_DEBUG_OPEN | |
e60a1084 | 1008 | printk(KERN_INFO "rp_close ttyR%d, count = %d\n", info->line, info->port.count); |
1da177e4 LT |
1009 | #endif |
1010 | ||
fba85e01 | 1011 | if (tty_port_close_start(port, tty, filp) == 0) |
1da177e4 | 1012 | return; |
1da177e4 LT |
1013 | |
1014 | cp = &info->channel; | |
1da177e4 LT |
1015 | /* |
1016 | * Before we drop DTR, make sure the UART transmitter | |
1017 | * has completely drained; this is especially | |
1018 | * important if there is a transmit FIFO! | |
1019 | */ | |
1020 | timeout = (sGetTxCnt(cp) + 1) * HZ / info->cps; | |
1021 | if (timeout == 0) | |
1022 | timeout = 1; | |
1023 | rp_wait_until_sent(tty, timeout); | |
1024 | clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]); | |
1025 | ||
1026 | sDisTransmit(cp); | |
1027 | sDisInterrupts(cp, (TXINT_EN | MCINT_EN | RXINT_EN | SRCINT_EN | CHANINT_EN)); | |
1028 | sDisCTSFlowCtl(cp); | |
1029 | sDisTxSoftFlowCtl(cp); | |
1030 | sClrTxXOFF(cp); | |
1031 | sFlushRxFIFO(cp); | |
1032 | sFlushTxFIFO(cp); | |
1033 | sClrRTS(cp); | |
1034 | if (C_HUPCL(tty)) | |
1035 | sClrDTR(cp); | |
1036 | ||
f6de0c98 | 1037 | rp_flush_buffer(tty); |
1da177e4 LT |
1038 | |
1039 | tty_ldisc_flush(tty); | |
1040 | ||
1041 | clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]); | |
1042 | ||
fba85e01 AC |
1043 | /* We can't yet use tty_port_close_end as the buffer handling in this |
1044 | driver is a bit different to the usual */ | |
1045 | ||
c1314a49 AC |
1046 | if (port->blocked_open) { |
1047 | if (port->close_delay) { | |
1048 | msleep_interruptible(jiffies_to_msecs(port->close_delay)); | |
1da177e4 | 1049 | } |
c1314a49 | 1050 | wake_up_interruptible(&port->open_wait); |
1da177e4 LT |
1051 | } else { |
1052 | if (info->xmit_buf) { | |
1053 | free_page((unsigned long) info->xmit_buf); | |
1054 | info->xmit_buf = NULL; | |
1055 | } | |
1056 | } | |
21bed701 | 1057 | info->port.flags &= ~(ASYNC_INITIALIZED | ASYNC_CLOSING | ASYNC_NORMAL_ACTIVE); |
1da177e4 | 1058 | tty->closing = 0; |
fba85e01 AC |
1059 | tty_port_tty_set(port, NULL); |
1060 | wake_up_interruptible(&port->close_wait); | |
8cf5a8c5 | 1061 | complete_all(&info->close_wait); |
1da177e4 LT |
1062 | atomic_dec(&rp_num_ports_open); |
1063 | ||
1064 | #ifdef ROCKET_DEBUG_OPEN | |
68562b79 JS |
1065 | printk(KERN_INFO "rocket mod-- = %d...\n", |
1066 | atomic_read(&rp_num_ports_open)); | |
1da177e4 LT |
1067 | printk(KERN_INFO "rp_close ttyR%d complete shutdown\n", info->line); |
1068 | #endif | |
1069 | ||
1070 | } | |
1071 | ||
1072 | static void rp_set_termios(struct tty_struct *tty, | |
606d099c | 1073 | struct ktermios *old_termios) |
1da177e4 | 1074 | { |
c9f19e96 | 1075 | struct r_port *info = tty->driver_data; |
1da177e4 LT |
1076 | CHANNEL_t *cp; |
1077 | unsigned cflag; | |
1078 | ||
1079 | if (rocket_paranoia_check(info, "rp_set_termios")) | |
1080 | return; | |
1081 | ||
1082 | cflag = tty->termios->c_cflag; | |
1083 | ||
1da177e4 LT |
1084 | /* |
1085 | * This driver doesn't support CS5 or CS6 | |
1086 | */ | |
1087 | if (((cflag & CSIZE) == CS5) || ((cflag & CSIZE) == CS6)) | |
1088 | tty->termios->c_cflag = | |
1089 | ((cflag & ~CSIZE) | (old_termios->c_cflag & CSIZE)); | |
6df3526b AC |
1090 | /* Or CMSPAR */ |
1091 | tty->termios->c_cflag &= ~CMSPAR; | |
1da177e4 | 1092 | |
47b01b3a | 1093 | configure_r_port(tty, info, old_termios); |
1da177e4 LT |
1094 | |
1095 | cp = &info->channel; | |
1096 | ||
1097 | /* Handle transition to B0 status */ | |
1098 | if ((old_termios->c_cflag & CBAUD) && !(tty->termios->c_cflag & CBAUD)) { | |
1099 | sClrDTR(cp); | |
1100 | sClrRTS(cp); | |
1101 | } | |
1102 | ||
1103 | /* Handle transition away from B0 status */ | |
1104 | if (!(old_termios->c_cflag & CBAUD) && (tty->termios->c_cflag & CBAUD)) { | |
1105 | if (!tty->hw_stopped || !(tty->termios->c_cflag & CRTSCTS)) | |
1106 | sSetRTS(cp); | |
1107 | sSetDTR(cp); | |
1108 | } | |
1109 | ||
1110 | if ((old_termios->c_cflag & CRTSCTS) && !(tty->termios->c_cflag & CRTSCTS)) { | |
1111 | tty->hw_stopped = 0; | |
1112 | rp_start(tty); | |
1113 | } | |
1114 | } | |
1115 | ||
9e98966c | 1116 | static int rp_break(struct tty_struct *tty, int break_state) |
1da177e4 | 1117 | { |
c9f19e96 | 1118 | struct r_port *info = tty->driver_data; |
1da177e4 LT |
1119 | unsigned long flags; |
1120 | ||
1121 | if (rocket_paranoia_check(info, "rp_break")) | |
9e98966c | 1122 | return -EINVAL; |
1da177e4 LT |
1123 | |
1124 | spin_lock_irqsave(&info->slock, flags); | |
1125 | if (break_state == -1) | |
1126 | sSendBreak(&info->channel); | |
1127 | else | |
1128 | sClrBreak(&info->channel); | |
1129 | spin_unlock_irqrestore(&info->slock, flags); | |
9e98966c | 1130 | return 0; |
1da177e4 LT |
1131 | } |
1132 | ||
1133 | /* | |
1134 | * sGetChanRI used to be a macro in rocket_int.h. When the functionality for | |
1135 | * the UPCI boards was added, it was decided to make this a function because | |
1136 | * the macro was getting too complicated. All cases except the first one | |
1137 | * (UPCIRingInd) are taken directly from the original macro. | |
1138 | */ | |
1139 | static int sGetChanRI(CHANNEL_T * ChP) | |
1140 | { | |
1141 | CONTROLLER_t *CtlP = ChP->CtlP; | |
1142 | int ChanNum = ChP->ChanNum; | |
1143 | int RingInd = 0; | |
1144 | ||
1145 | if (CtlP->UPCIRingInd) | |
1146 | RingInd = !(sInB(CtlP->UPCIRingInd) & sBitMapSetTbl[ChanNum]); | |
1147 | else if (CtlP->AltChanRingIndicator) | |
1148 | RingInd = sInB((ByteIO_t) (ChP->ChanStat + 8)) & DSR_ACT; | |
1149 | else if (CtlP->boardType == ROCKET_TYPE_PC104) | |
1150 | RingInd = !(sInB(CtlP->AiopIO[3]) & sBitMapSetTbl[ChanNum]); | |
1151 | ||
1152 | return RingInd; | |
1153 | } | |
1154 | ||
1155 | /********************************************************************************************/ | |
1156 | /* Here are the routines used by rp_ioctl. These are all called from exception handlers. */ | |
1157 | ||
1158 | /* | |
1159 | * Returns the state of the serial modem control lines. These next 2 functions | |
1160 | * are the way kernel versions > 2.5 handle modem control lines rather than IOCTLs. | |
1161 | */ | |
1162 | static int rp_tiocmget(struct tty_struct *tty, struct file *file) | |
1163 | { | |
c9f19e96 | 1164 | struct r_port *info = tty->driver_data; |
1da177e4 LT |
1165 | unsigned int control, result, ChanStatus; |
1166 | ||
1167 | ChanStatus = sGetChanStatusLo(&info->channel); | |
1168 | control = info->channel.TxControl[3]; | |
1169 | result = ((control & SET_RTS) ? TIOCM_RTS : 0) | | |
1170 | ((control & SET_DTR) ? TIOCM_DTR : 0) | | |
1171 | ((ChanStatus & CD_ACT) ? TIOCM_CAR : 0) | | |
1172 | (sGetChanRI(&info->channel) ? TIOCM_RNG : 0) | | |
1173 | ((ChanStatus & DSR_ACT) ? TIOCM_DSR : 0) | | |
1174 | ((ChanStatus & CTS_ACT) ? TIOCM_CTS : 0); | |
1175 | ||
1176 | return result; | |
1177 | } | |
1178 | ||
1179 | /* | |
1180 | * Sets the modem control lines | |
1181 | */ | |
1182 | static int rp_tiocmset(struct tty_struct *tty, struct file *file, | |
1183 | unsigned int set, unsigned int clear) | |
1184 | { | |
c9f19e96 | 1185 | struct r_port *info = tty->driver_data; |
1da177e4 LT |
1186 | |
1187 | if (set & TIOCM_RTS) | |
1188 | info->channel.TxControl[3] |= SET_RTS; | |
1189 | if (set & TIOCM_DTR) | |
1190 | info->channel.TxControl[3] |= SET_DTR; | |
1191 | if (clear & TIOCM_RTS) | |
1192 | info->channel.TxControl[3] &= ~SET_RTS; | |
1193 | if (clear & TIOCM_DTR) | |
1194 | info->channel.TxControl[3] &= ~SET_DTR; | |
1195 | ||
457fb605 | 1196 | out32(info->channel.IndexAddr, info->channel.TxControl); |
1da177e4 LT |
1197 | return 0; |
1198 | } | |
1199 | ||
1200 | static int get_config(struct r_port *info, struct rocket_config __user *retinfo) | |
1201 | { | |
1202 | struct rocket_config tmp; | |
1203 | ||
1204 | if (!retinfo) | |
1205 | return -EFAULT; | |
1206 | memset(&tmp, 0, sizeof (tmp)); | |
1207 | tmp.line = info->line; | |
1208 | tmp.flags = info->flags; | |
44b7d1b3 AC |
1209 | tmp.close_delay = info->port.close_delay; |
1210 | tmp.closing_wait = info->port.closing_wait; | |
1da177e4 LT |
1211 | tmp.port = rcktpt_io_addr[(info->line >> 5) & 3]; |
1212 | ||
1213 | if (copy_to_user(retinfo, &tmp, sizeof (*retinfo))) | |
1214 | return -EFAULT; | |
1215 | return 0; | |
1216 | } | |
1217 | ||
47b01b3a AC |
1218 | static int set_config(struct tty_struct *tty, struct r_port *info, |
1219 | struct rocket_config __user *new_info) | |
1da177e4 LT |
1220 | { |
1221 | struct rocket_config new_serial; | |
1222 | ||
1223 | if (copy_from_user(&new_serial, new_info, sizeof (new_serial))) | |
1224 | return -EFAULT; | |
1225 | ||
1226 | if (!capable(CAP_SYS_ADMIN)) | |
1227 | { | |
1228 | if ((new_serial.flags & ~ROCKET_USR_MASK) != (info->flags & ~ROCKET_USR_MASK)) | |
1229 | return -EPERM; | |
1230 | info->flags = ((info->flags & ~ROCKET_USR_MASK) | (new_serial.flags & ROCKET_USR_MASK)); | |
47b01b3a | 1231 | configure_r_port(tty, info, NULL); |
1da177e4 LT |
1232 | return 0; |
1233 | } | |
1234 | ||
1235 | info->flags = ((info->flags & ~ROCKET_FLAGS) | (new_serial.flags & ROCKET_FLAGS)); | |
44b7d1b3 AC |
1236 | info->port.close_delay = new_serial.close_delay; |
1237 | info->port.closing_wait = new_serial.closing_wait; | |
1da177e4 LT |
1238 | |
1239 | if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_HI) | |
47b01b3a | 1240 | tty->alt_speed = 57600; |
1da177e4 | 1241 | if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_VHI) |
47b01b3a | 1242 | tty->alt_speed = 115200; |
1da177e4 | 1243 | if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_SHI) |
47b01b3a | 1244 | tty->alt_speed = 230400; |
1da177e4 | 1245 | if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_WARP) |
47b01b3a | 1246 | tty->alt_speed = 460800; |
1da177e4 | 1247 | |
47b01b3a | 1248 | configure_r_port(tty, info, NULL); |
1da177e4 LT |
1249 | return 0; |
1250 | } | |
1251 | ||
1252 | /* | |
1253 | * This function fills in a rocket_ports struct with information | |
1254 | * about what boards/ports are in the system. This info is passed | |
1255 | * to user space. See setrocket.c where the info is used to create | |
1256 | * the /dev/ttyRx ports. | |
1257 | */ | |
1258 | static int get_ports(struct r_port *info, struct rocket_ports __user *retports) | |
1259 | { | |
1260 | struct rocket_ports tmp; | |
1261 | int board; | |
1262 | ||
1263 | if (!retports) | |
1264 | return -EFAULT; | |
1265 | memset(&tmp, 0, sizeof (tmp)); | |
1266 | tmp.tty_major = rocket_driver->major; | |
1267 | ||
1268 | for (board = 0; board < 4; board++) { | |
1269 | tmp.rocketModel[board].model = rocketModel[board].model; | |
1270 | strcpy(tmp.rocketModel[board].modelString, rocketModel[board].modelString); | |
1271 | tmp.rocketModel[board].numPorts = rocketModel[board].numPorts; | |
1272 | tmp.rocketModel[board].loadrm2 = rocketModel[board].loadrm2; | |
1273 | tmp.rocketModel[board].startingPortNumber = rocketModel[board].startingPortNumber; | |
1274 | } | |
1275 | if (copy_to_user(retports, &tmp, sizeof (*retports))) | |
1276 | return -EFAULT; | |
1277 | return 0; | |
1278 | } | |
1279 | ||
1280 | static int reset_rm2(struct r_port *info, void __user *arg) | |
1281 | { | |
1282 | int reset; | |
1283 | ||
4129a645 AC |
1284 | if (!capable(CAP_SYS_ADMIN)) |
1285 | return -EPERM; | |
1286 | ||
1da177e4 LT |
1287 | if (copy_from_user(&reset, arg, sizeof (int))) |
1288 | return -EFAULT; | |
1289 | if (reset) | |
1290 | reset = 1; | |
1291 | ||
1292 | if (rcktpt_type[info->board] != ROCKET_TYPE_MODEMII && | |
1293 | rcktpt_type[info->board] != ROCKET_TYPE_MODEMIII) | |
1294 | return -EINVAL; | |
1295 | ||
1296 | if (info->ctlp->BusType == isISA) | |
1297 | sModemReset(info->ctlp, info->chan, reset); | |
1298 | else | |
1299 | sPCIModemReset(info->ctlp, info->chan, reset); | |
1300 | ||
1301 | return 0; | |
1302 | } | |
1303 | ||
1304 | static int get_version(struct r_port *info, struct rocket_version __user *retvers) | |
1305 | { | |
1306 | if (copy_to_user(retvers, &driver_version, sizeof (*retvers))) | |
1307 | return -EFAULT; | |
1308 | return 0; | |
1309 | } | |
1310 | ||
1311 | /* IOCTL call handler into the driver */ | |
1312 | static int rp_ioctl(struct tty_struct *tty, struct file *file, | |
1313 | unsigned int cmd, unsigned long arg) | |
1314 | { | |
c9f19e96 | 1315 | struct r_port *info = tty->driver_data; |
1da177e4 | 1316 | void __user *argp = (void __user *)arg; |
bdf183aa | 1317 | int ret = 0; |
1da177e4 LT |
1318 | |
1319 | if (cmd != RCKP_GET_PORTS && rocket_paranoia_check(info, "rp_ioctl")) | |
1320 | return -ENXIO; | |
1321 | ||
bdf183aa AC |
1322 | lock_kernel(); |
1323 | ||
1da177e4 LT |
1324 | switch (cmd) { |
1325 | case RCKP_GET_STRUCT: | |
1326 | if (copy_to_user(argp, info, sizeof (struct r_port))) | |
bdf183aa AC |
1327 | ret = -EFAULT; |
1328 | break; | |
1da177e4 | 1329 | case RCKP_GET_CONFIG: |
bdf183aa AC |
1330 | ret = get_config(info, argp); |
1331 | break; | |
1da177e4 | 1332 | case RCKP_SET_CONFIG: |
47b01b3a | 1333 | ret = set_config(tty, info, argp); |
bdf183aa | 1334 | break; |
1da177e4 | 1335 | case RCKP_GET_PORTS: |
bdf183aa AC |
1336 | ret = get_ports(info, argp); |
1337 | break; | |
1da177e4 | 1338 | case RCKP_RESET_RM2: |
bdf183aa AC |
1339 | ret = reset_rm2(info, argp); |
1340 | break; | |
1da177e4 | 1341 | case RCKP_GET_VERSION: |
bdf183aa AC |
1342 | ret = get_version(info, argp); |
1343 | break; | |
1da177e4 | 1344 | default: |
bdf183aa | 1345 | ret = -ENOIOCTLCMD; |
1da177e4 | 1346 | } |
bdf183aa AC |
1347 | unlock_kernel(); |
1348 | return ret; | |
1da177e4 LT |
1349 | } |
1350 | ||
1351 | static void rp_send_xchar(struct tty_struct *tty, char ch) | |
1352 | { | |
c9f19e96 | 1353 | struct r_port *info = tty->driver_data; |
1da177e4 LT |
1354 | CHANNEL_t *cp; |
1355 | ||
1356 | if (rocket_paranoia_check(info, "rp_send_xchar")) | |
1357 | return; | |
1358 | ||
1359 | cp = &info->channel; | |
1360 | if (sGetTxCnt(cp)) | |
1361 | sWriteTxPrioByte(cp, ch); | |
1362 | else | |
1363 | sWriteTxByte(sGetTxRxDataIO(cp), ch); | |
1364 | } | |
1365 | ||
1366 | static void rp_throttle(struct tty_struct *tty) | |
1367 | { | |
c9f19e96 | 1368 | struct r_port *info = tty->driver_data; |
1da177e4 LT |
1369 | CHANNEL_t *cp; |
1370 | ||
1371 | #ifdef ROCKET_DEBUG_THROTTLE | |
1372 | printk(KERN_INFO "throttle %s: %d....\n", tty->name, | |
1373 | tty->ldisc.chars_in_buffer(tty)); | |
1374 | #endif | |
1375 | ||
1376 | if (rocket_paranoia_check(info, "rp_throttle")) | |
1377 | return; | |
1378 | ||
1379 | cp = &info->channel; | |
1380 | if (I_IXOFF(tty)) | |
1381 | rp_send_xchar(tty, STOP_CHAR(tty)); | |
1382 | ||
1383 | sClrRTS(&info->channel); | |
1384 | } | |
1385 | ||
1386 | static void rp_unthrottle(struct tty_struct *tty) | |
1387 | { | |
c9f19e96 | 1388 | struct r_port *info = tty->driver_data; |
1da177e4 LT |
1389 | CHANNEL_t *cp; |
1390 | #ifdef ROCKET_DEBUG_THROTTLE | |
1391 | printk(KERN_INFO "unthrottle %s: %d....\n", tty->name, | |
1392 | tty->ldisc.chars_in_buffer(tty)); | |
1393 | #endif | |
1394 | ||
1395 | if (rocket_paranoia_check(info, "rp_throttle")) | |
1396 | return; | |
1397 | ||
1398 | cp = &info->channel; | |
1399 | if (I_IXOFF(tty)) | |
1400 | rp_send_xchar(tty, START_CHAR(tty)); | |
1401 | ||
1402 | sSetRTS(&info->channel); | |
1403 | } | |
1404 | ||
1405 | /* | |
1406 | * ------------------------------------------------------------ | |
1407 | * rp_stop() and rp_start() | |
1408 | * | |
1409 | * This routines are called before setting or resetting tty->stopped. | |
1410 | * They enable or disable transmitter interrupts, as necessary. | |
1411 | * ------------------------------------------------------------ | |
1412 | */ | |
1413 | static void rp_stop(struct tty_struct *tty) | |
1414 | { | |
c9f19e96 | 1415 | struct r_port *info = tty->driver_data; |
1da177e4 LT |
1416 | |
1417 | #ifdef ROCKET_DEBUG_FLOW | |
1418 | printk(KERN_INFO "stop %s: %d %d....\n", tty->name, | |
1419 | info->xmit_cnt, info->xmit_fifo_room); | |
1420 | #endif | |
1421 | ||
1422 | if (rocket_paranoia_check(info, "rp_stop")) | |
1423 | return; | |
1424 | ||
1425 | if (sGetTxCnt(&info->channel)) | |
1426 | sDisTransmit(&info->channel); | |
1427 | } | |
1428 | ||
1429 | static void rp_start(struct tty_struct *tty) | |
1430 | { | |
c9f19e96 | 1431 | struct r_port *info = tty->driver_data; |
1da177e4 LT |
1432 | |
1433 | #ifdef ROCKET_DEBUG_FLOW | |
1434 | printk(KERN_INFO "start %s: %d %d....\n", tty->name, | |
1435 | info->xmit_cnt, info->xmit_fifo_room); | |
1436 | #endif | |
1437 | ||
1438 | if (rocket_paranoia_check(info, "rp_stop")) | |
1439 | return; | |
1440 | ||
1441 | sEnTransmit(&info->channel); | |
1442 | set_bit((info->aiop * 8) + info->chan, | |
1443 | (void *) &xmit_flags[info->board]); | |
1444 | } | |
1445 | ||
1446 | /* | |
1447 | * rp_wait_until_sent() --- wait until the transmitter is empty | |
1448 | */ | |
1449 | static void rp_wait_until_sent(struct tty_struct *tty, int timeout) | |
1450 | { | |
c9f19e96 | 1451 | struct r_port *info = tty->driver_data; |
1da177e4 LT |
1452 | CHANNEL_t *cp; |
1453 | unsigned long orig_jiffies; | |
1454 | int check_time, exit_time; | |
1455 | int txcnt; | |
1456 | ||
1457 | if (rocket_paranoia_check(info, "rp_wait_until_sent")) | |
1458 | return; | |
1459 | ||
1460 | cp = &info->channel; | |
1461 | ||
1462 | orig_jiffies = jiffies; | |
1463 | #ifdef ROCKET_DEBUG_WAIT_UNTIL_SENT | |
68562b79 | 1464 | printk(KERN_INFO "In RP_wait_until_sent(%d) (jiff=%lu)...\n", timeout, |
1da177e4 | 1465 | jiffies); |
68562b79 | 1466 | printk(KERN_INFO "cps=%d...\n", info->cps); |
1da177e4 | 1467 | #endif |
978e595f | 1468 | lock_kernel(); |
1da177e4 LT |
1469 | while (1) { |
1470 | txcnt = sGetTxCnt(cp); | |
1471 | if (!txcnt) { | |
1472 | if (sGetChanStatusLo(cp) & TXSHRMT) | |
1473 | break; | |
1474 | check_time = (HZ / info->cps) / 5; | |
1475 | } else { | |
1476 | check_time = HZ * txcnt / info->cps; | |
1477 | } | |
1478 | if (timeout) { | |
1479 | exit_time = orig_jiffies + timeout - jiffies; | |
1480 | if (exit_time <= 0) | |
1481 | break; | |
1482 | if (exit_time < check_time) | |
1483 | check_time = exit_time; | |
1484 | } | |
1485 | if (check_time == 0) | |
1486 | check_time = 1; | |
1487 | #ifdef ROCKET_DEBUG_WAIT_UNTIL_SENT | |
68562b79 JS |
1488 | printk(KERN_INFO "txcnt = %d (jiff=%lu,check=%d)...\n", txcnt, |
1489 | jiffies, check_time); | |
1da177e4 LT |
1490 | #endif |
1491 | msleep_interruptible(jiffies_to_msecs(check_time)); | |
1492 | if (signal_pending(current)) | |
1493 | break; | |
1494 | } | |
cc0a8fbb | 1495 | __set_current_state(TASK_RUNNING); |
978e595f | 1496 | unlock_kernel(); |
1da177e4 LT |
1497 | #ifdef ROCKET_DEBUG_WAIT_UNTIL_SENT |
1498 | printk(KERN_INFO "txcnt = %d (jiff=%lu)...done\n", txcnt, jiffies); | |
1499 | #endif | |
1500 | } | |
1501 | ||
1502 | /* | |
1503 | * rp_hangup() --- called by tty_hangup() when a hangup is signaled. | |
1504 | */ | |
1505 | static void rp_hangup(struct tty_struct *tty) | |
1506 | { | |
1507 | CHANNEL_t *cp; | |
c9f19e96 | 1508 | struct r_port *info = tty->driver_data; |
1da177e4 LT |
1509 | |
1510 | if (rocket_paranoia_check(info, "rp_hangup")) | |
1511 | return; | |
1512 | ||
1513 | #if (defined(ROCKET_DEBUG_OPEN) || defined(ROCKET_DEBUG_HANGUP)) | |
68562b79 | 1514 | printk(KERN_INFO "rp_hangup of ttyR%d...\n", info->line); |
1da177e4 LT |
1515 | #endif |
1516 | rp_flush_buffer(tty); | |
21bed701 | 1517 | if (info->port.flags & ASYNC_CLOSING) |
1da177e4 | 1518 | return; |
e60a1084 | 1519 | if (info->port.count) |
1da177e4 LT |
1520 | atomic_dec(&rp_num_ports_open); |
1521 | clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]); | |
1522 | ||
fba85e01 | 1523 | tty_port_hangup(&info->port); |
1da177e4 LT |
1524 | |
1525 | cp = &info->channel; | |
1526 | sDisRxFIFO(cp); | |
1527 | sDisTransmit(cp); | |
1528 | sDisInterrupts(cp, (TXINT_EN | MCINT_EN | RXINT_EN | SRCINT_EN | CHANINT_EN)); | |
1529 | sDisCTSFlowCtl(cp); | |
1530 | sDisTxSoftFlowCtl(cp); | |
1531 | sClrTxXOFF(cp); | |
21bed701 | 1532 | info->port.flags &= ~ASYNC_INITIALIZED; |
1da177e4 | 1533 | |
e60a1084 | 1534 | wake_up_interruptible(&info->port.open_wait); |
1da177e4 LT |
1535 | } |
1536 | ||
1537 | /* | |
1538 | * Exception handler - write char routine. The RocketPort driver uses a | |
1539 | * double-buffering strategy, with the twist that if the in-memory CPU | |
1540 | * buffer is empty, and there's space in the transmit FIFO, the | |
1541 | * writing routines will write directly to transmit FIFO. | |
1542 | * Write buffer and counters protected by spinlocks | |
1543 | */ | |
bbbbb96f | 1544 | static int rp_put_char(struct tty_struct *tty, unsigned char ch) |
1da177e4 | 1545 | { |
c9f19e96 | 1546 | struct r_port *info = tty->driver_data; |
1da177e4 LT |
1547 | CHANNEL_t *cp; |
1548 | unsigned long flags; | |
1549 | ||
1550 | if (rocket_paranoia_check(info, "rp_put_char")) | |
bbbbb96f | 1551 | return 0; |
1da177e4 | 1552 | |
69f545ea MK |
1553 | /* |
1554 | * Grab the port write mutex, locking out other processes that try to | |
1555 | * write to this port | |
1556 | */ | |
1557 | mutex_lock(&info->write_mtx); | |
1da177e4 LT |
1558 | |
1559 | #ifdef ROCKET_DEBUG_WRITE | |
68562b79 | 1560 | printk(KERN_INFO "rp_put_char %c...\n", ch); |
1da177e4 LT |
1561 | #endif |
1562 | ||
1563 | spin_lock_irqsave(&info->slock, flags); | |
1564 | cp = &info->channel; | |
1565 | ||
1566 | if (!tty->stopped && !tty->hw_stopped && info->xmit_fifo_room == 0) | |
1567 | info->xmit_fifo_room = TXFIFO_SIZE - sGetTxCnt(cp); | |
1568 | ||
1569 | if (tty->stopped || tty->hw_stopped || info->xmit_fifo_room == 0 || info->xmit_cnt != 0) { | |
1570 | info->xmit_buf[info->xmit_head++] = ch; | |
1571 | info->xmit_head &= XMIT_BUF_SIZE - 1; | |
1572 | info->xmit_cnt++; | |
1573 | set_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]); | |
1574 | } else { | |
1575 | sOutB(sGetTxRxDataIO(cp), ch); | |
1576 | info->xmit_fifo_room--; | |
1577 | } | |
1578 | spin_unlock_irqrestore(&info->slock, flags); | |
69f545ea | 1579 | mutex_unlock(&info->write_mtx); |
bbbbb96f | 1580 | return 1; |
1da177e4 LT |
1581 | } |
1582 | ||
1583 | /* | |
1584 | * Exception handler - write routine, called when user app writes to the device. | |
69f545ea | 1585 | * A per port write mutex is used to protect from another process writing to |
1da177e4 LT |
1586 | * this port at the same time. This other process could be running on the other CPU |
1587 | * or get control of the CPU if the copy_from_user() blocks due to a page fault (swapped out). | |
1588 | * Spinlocks protect the info xmit members. | |
1589 | */ | |
1590 | static int rp_write(struct tty_struct *tty, | |
1591 | const unsigned char *buf, int count) | |
1592 | { | |
c9f19e96 | 1593 | struct r_port *info = tty->driver_data; |
1da177e4 LT |
1594 | CHANNEL_t *cp; |
1595 | const unsigned char *b; | |
1596 | int c, retval = 0; | |
1597 | unsigned long flags; | |
1598 | ||
1599 | if (count <= 0 || rocket_paranoia_check(info, "rp_write")) | |
1600 | return 0; | |
1601 | ||
1e3e8d91 SS |
1602 | if (mutex_lock_interruptible(&info->write_mtx)) |
1603 | return -ERESTARTSYS; | |
1da177e4 LT |
1604 | |
1605 | #ifdef ROCKET_DEBUG_WRITE | |
68562b79 | 1606 | printk(KERN_INFO "rp_write %d chars...\n", count); |
1da177e4 LT |
1607 | #endif |
1608 | cp = &info->channel; | |
1609 | ||
1610 | if (!tty->stopped && !tty->hw_stopped && info->xmit_fifo_room < count) | |
1611 | info->xmit_fifo_room = TXFIFO_SIZE - sGetTxCnt(cp); | |
1612 | ||
1613 | /* | |
1614 | * If the write queue for the port is empty, and there is FIFO space, stuff bytes | |
1615 | * into FIFO. Use the write queue for temp storage. | |
1616 | */ | |
1617 | if (!tty->stopped && !tty->hw_stopped && info->xmit_cnt == 0 && info->xmit_fifo_room > 0) { | |
1618 | c = min(count, info->xmit_fifo_room); | |
1619 | b = buf; | |
1620 | ||
1621 | /* Push data into FIFO, 2 bytes at a time */ | |
1622 | sOutStrW(sGetTxRxDataIO(cp), (unsigned short *) b, c / 2); | |
1623 | ||
1624 | /* If there is a byte remaining, write it */ | |
1625 | if (c & 1) | |
1626 | sOutB(sGetTxRxDataIO(cp), b[c - 1]); | |
1627 | ||
1628 | retval += c; | |
1629 | buf += c; | |
1630 | count -= c; | |
1631 | ||
1632 | spin_lock_irqsave(&info->slock, flags); | |
1633 | info->xmit_fifo_room -= c; | |
1634 | spin_unlock_irqrestore(&info->slock, flags); | |
1635 | } | |
1636 | ||
1637 | /* If count is zero, we wrote it all and are done */ | |
1638 | if (!count) | |
1639 | goto end; | |
1640 | ||
1641 | /* Write remaining data into the port's xmit_buf */ | |
1642 | while (1) { | |
47b01b3a AC |
1643 | /* Hung up ? */ |
1644 | if (!test_bit(ASYNC_NORMAL_ACTIVE, &info->port.flags)) | |
1da177e4 | 1645 | goto end; |
709107fc HH |
1646 | c = min(count, XMIT_BUF_SIZE - info->xmit_cnt - 1); |
1647 | c = min(c, XMIT_BUF_SIZE - info->xmit_head); | |
1da177e4 LT |
1648 | if (c <= 0) |
1649 | break; | |
1650 | ||
1651 | b = buf; | |
1652 | memcpy(info->xmit_buf + info->xmit_head, b, c); | |
1653 | ||
1654 | spin_lock_irqsave(&info->slock, flags); | |
1655 | info->xmit_head = | |
1656 | (info->xmit_head + c) & (XMIT_BUF_SIZE - 1); | |
1657 | info->xmit_cnt += c; | |
1658 | spin_unlock_irqrestore(&info->slock, flags); | |
1659 | ||
1660 | buf += c; | |
1661 | count -= c; | |
1662 | retval += c; | |
1663 | } | |
1664 | ||
1665 | if ((retval > 0) && !tty->stopped && !tty->hw_stopped) | |
1666 | set_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]); | |
1667 | ||
1668 | end: | |
1669 | if (info->xmit_cnt < WAKEUP_CHARS) { | |
1670 | tty_wakeup(tty); | |
1da177e4 LT |
1671 | #ifdef ROCKETPORT_HAVE_POLL_WAIT |
1672 | wake_up_interruptible(&tty->poll_wait); | |
1673 | #endif | |
1674 | } | |
69f545ea | 1675 | mutex_unlock(&info->write_mtx); |
1da177e4 LT |
1676 | return retval; |
1677 | } | |
1678 | ||
1679 | /* | |
1680 | * Return the number of characters that can be sent. We estimate | |
1681 | * only using the in-memory transmit buffer only, and ignore the | |
1682 | * potential space in the transmit FIFO. | |
1683 | */ | |
1684 | static int rp_write_room(struct tty_struct *tty) | |
1685 | { | |
c9f19e96 | 1686 | struct r_port *info = tty->driver_data; |
1da177e4 LT |
1687 | int ret; |
1688 | ||
1689 | if (rocket_paranoia_check(info, "rp_write_room")) | |
1690 | return 0; | |
1691 | ||
1692 | ret = XMIT_BUF_SIZE - info->xmit_cnt - 1; | |
1693 | if (ret < 0) | |
1694 | ret = 0; | |
1695 | #ifdef ROCKET_DEBUG_WRITE | |
68562b79 | 1696 | printk(KERN_INFO "rp_write_room returns %d...\n", ret); |
1da177e4 LT |
1697 | #endif |
1698 | return ret; | |
1699 | } | |
1700 | ||
1701 | /* | |
1702 | * Return the number of characters in the buffer. Again, this only | |
1703 | * counts those characters in the in-memory transmit buffer. | |
1704 | */ | |
1705 | static int rp_chars_in_buffer(struct tty_struct *tty) | |
1706 | { | |
c9f19e96 | 1707 | struct r_port *info = tty->driver_data; |
1da177e4 LT |
1708 | CHANNEL_t *cp; |
1709 | ||
1710 | if (rocket_paranoia_check(info, "rp_chars_in_buffer")) | |
1711 | return 0; | |
1712 | ||
1713 | cp = &info->channel; | |
1714 | ||
1715 | #ifdef ROCKET_DEBUG_WRITE | |
68562b79 | 1716 | printk(KERN_INFO "rp_chars_in_buffer returns %d...\n", info->xmit_cnt); |
1da177e4 LT |
1717 | #endif |
1718 | return info->xmit_cnt; | |
1719 | } | |
1720 | ||
1721 | /* | |
1722 | * Flushes the TX fifo for a port, deletes data in the xmit_buf stored in the | |
1723 | * r_port struct for the port. Note that spinlock are used to protect info members, | |
1724 | * do not call this function if the spinlock is already held. | |
1725 | */ | |
1726 | static void rp_flush_buffer(struct tty_struct *tty) | |
1727 | { | |
c9f19e96 | 1728 | struct r_port *info = tty->driver_data; |
1da177e4 LT |
1729 | CHANNEL_t *cp; |
1730 | unsigned long flags; | |
1731 | ||
1732 | if (rocket_paranoia_check(info, "rp_flush_buffer")) | |
1733 | return; | |
1734 | ||
1735 | spin_lock_irqsave(&info->slock, flags); | |
1736 | info->xmit_cnt = info->xmit_head = info->xmit_tail = 0; | |
1737 | spin_unlock_irqrestore(&info->slock, flags); | |
1738 | ||
1da177e4 LT |
1739 | #ifdef ROCKETPORT_HAVE_POLL_WAIT |
1740 | wake_up_interruptible(&tty->poll_wait); | |
1741 | #endif | |
1742 | tty_wakeup(tty); | |
1743 | ||
1744 | cp = &info->channel; | |
1745 | sFlushTxFIFO(cp); | |
1746 | } | |
1747 | ||
1748 | #ifdef CONFIG_PCI | |
1749 | ||
8d5916d3 JS |
1750 | static struct pci_device_id __devinitdata rocket_pci_ids[] = { |
1751 | { PCI_DEVICE(PCI_VENDOR_ID_RP, PCI_ANY_ID) }, | |
1752 | { } | |
1753 | }; | |
1754 | MODULE_DEVICE_TABLE(pci, rocket_pci_ids); | |
1755 | ||
1da177e4 LT |
1756 | /* |
1757 | * Called when a PCI card is found. Retrieves and stores model information, | |
1758 | * init's aiopic and serial port hardware. | |
1759 | * Inputs: i is the board number (0-n) | |
1760 | */ | |
f15313bf | 1761 | static __init int register_PCI(int i, struct pci_dev *dev) |
1da177e4 LT |
1762 | { |
1763 | int num_aiops, aiop, max_num_aiops, num_chan, chan; | |
1764 | unsigned int aiopio[MAX_AIOPS_PER_BOARD]; | |
1765 | char *str, *board_type; | |
1766 | CONTROLLER_t *ctlp; | |
1767 | ||
1768 | int fast_clock = 0; | |
1769 | int altChanRingIndicator = 0; | |
1770 | int ports_per_aiop = 8; | |
1da177e4 LT |
1771 | WordIO_t ConfigIO = 0; |
1772 | ByteIO_t UPCIRingInd = 0; | |
1773 | ||
1774 | if (!dev || pci_enable_device(dev)) | |
1775 | return 0; | |
1776 | ||
1777 | rcktpt_io_addr[i] = pci_resource_start(dev, 0); | |
1da177e4 LT |
1778 | |
1779 | rcktpt_type[i] = ROCKET_TYPE_NORMAL; | |
1780 | rocketModel[i].loadrm2 = 0; | |
1781 | rocketModel[i].startingPortNumber = nextLineNumber; | |
1782 | ||
1783 | /* Depending on the model, set up some config variables */ | |
1784 | switch (dev->device) { | |
1785 | case PCI_DEVICE_ID_RP4QUAD: | |
1786 | str = "Quadcable"; | |
1787 | max_num_aiops = 1; | |
1788 | ports_per_aiop = 4; | |
1789 | rocketModel[i].model = MODEL_RP4QUAD; | |
1790 | strcpy(rocketModel[i].modelString, "RocketPort 4 port w/quad cable"); | |
1791 | rocketModel[i].numPorts = 4; | |
1792 | break; | |
1793 | case PCI_DEVICE_ID_RP8OCTA: | |
1794 | str = "Octacable"; | |
1795 | max_num_aiops = 1; | |
1796 | rocketModel[i].model = MODEL_RP8OCTA; | |
1797 | strcpy(rocketModel[i].modelString, "RocketPort 8 port w/octa cable"); | |
1798 | rocketModel[i].numPorts = 8; | |
1799 | break; | |
1800 | case PCI_DEVICE_ID_URP8OCTA: | |
1801 | str = "Octacable"; | |
1802 | max_num_aiops = 1; | |
1803 | rocketModel[i].model = MODEL_UPCI_RP8OCTA; | |
1804 | strcpy(rocketModel[i].modelString, "RocketPort UPCI 8 port w/octa cable"); | |
1805 | rocketModel[i].numPorts = 8; | |
1806 | break; | |
1807 | case PCI_DEVICE_ID_RP8INTF: | |
1808 | str = "8"; | |
1809 | max_num_aiops = 1; | |
1810 | rocketModel[i].model = MODEL_RP8INTF; | |
1811 | strcpy(rocketModel[i].modelString, "RocketPort 8 port w/external I/F"); | |
1812 | rocketModel[i].numPorts = 8; | |
1813 | break; | |
1814 | case PCI_DEVICE_ID_URP8INTF: | |
1815 | str = "8"; | |
1816 | max_num_aiops = 1; | |
1817 | rocketModel[i].model = MODEL_UPCI_RP8INTF; | |
1818 | strcpy(rocketModel[i].modelString, "RocketPort UPCI 8 port w/external I/F"); | |
1819 | rocketModel[i].numPorts = 8; | |
1820 | break; | |
1821 | case PCI_DEVICE_ID_RP8J: | |
1822 | str = "8J"; | |
1823 | max_num_aiops = 1; | |
1824 | rocketModel[i].model = MODEL_RP8J; | |
1825 | strcpy(rocketModel[i].modelString, "RocketPort 8 port w/RJ11 connectors"); | |
1826 | rocketModel[i].numPorts = 8; | |
1827 | break; | |
1828 | case PCI_DEVICE_ID_RP4J: | |
1829 | str = "4J"; | |
1830 | max_num_aiops = 1; | |
1831 | ports_per_aiop = 4; | |
1832 | rocketModel[i].model = MODEL_RP4J; | |
1833 | strcpy(rocketModel[i].modelString, "RocketPort 4 port w/RJ45 connectors"); | |
1834 | rocketModel[i].numPorts = 4; | |
1835 | break; | |
1836 | case PCI_DEVICE_ID_RP8SNI: | |
1837 | str = "8 (DB78 Custom)"; | |
1838 | max_num_aiops = 1; | |
1839 | rocketModel[i].model = MODEL_RP8SNI; | |
1840 | strcpy(rocketModel[i].modelString, "RocketPort 8 port w/ custom DB78"); | |
1841 | rocketModel[i].numPorts = 8; | |
1842 | break; | |
1843 | case PCI_DEVICE_ID_RP16SNI: | |
1844 | str = "16 (DB78 Custom)"; | |
1845 | max_num_aiops = 2; | |
1846 | rocketModel[i].model = MODEL_RP16SNI; | |
1847 | strcpy(rocketModel[i].modelString, "RocketPort 16 port w/ custom DB78"); | |
1848 | rocketModel[i].numPorts = 16; | |
1849 | break; | |
1850 | case PCI_DEVICE_ID_RP16INTF: | |
1851 | str = "16"; | |
1852 | max_num_aiops = 2; | |
1853 | rocketModel[i].model = MODEL_RP16INTF; | |
1854 | strcpy(rocketModel[i].modelString, "RocketPort 16 port w/external I/F"); | |
1855 | rocketModel[i].numPorts = 16; | |
1856 | break; | |
1857 | case PCI_DEVICE_ID_URP16INTF: | |
1858 | str = "16"; | |
1859 | max_num_aiops = 2; | |
1860 | rocketModel[i].model = MODEL_UPCI_RP16INTF; | |
1861 | strcpy(rocketModel[i].modelString, "RocketPort UPCI 16 port w/external I/F"); | |
1862 | rocketModel[i].numPorts = 16; | |
1863 | break; | |
1864 | case PCI_DEVICE_ID_CRP16INTF: | |
1865 | str = "16"; | |
1866 | max_num_aiops = 2; | |
1867 | rocketModel[i].model = MODEL_CPCI_RP16INTF; | |
1868 | strcpy(rocketModel[i].modelString, "RocketPort Compact PCI 16 port w/external I/F"); | |
1869 | rocketModel[i].numPorts = 16; | |
1870 | break; | |
1871 | case PCI_DEVICE_ID_RP32INTF: | |
1872 | str = "32"; | |
1873 | max_num_aiops = 4; | |
1874 | rocketModel[i].model = MODEL_RP32INTF; | |
1875 | strcpy(rocketModel[i].modelString, "RocketPort 32 port w/external I/F"); | |
1876 | rocketModel[i].numPorts = 32; | |
1877 | break; | |
1878 | case PCI_DEVICE_ID_URP32INTF: | |
1879 | str = "32"; | |
1880 | max_num_aiops = 4; | |
1881 | rocketModel[i].model = MODEL_UPCI_RP32INTF; | |
1882 | strcpy(rocketModel[i].modelString, "RocketPort UPCI 32 port w/external I/F"); | |
1883 | rocketModel[i].numPorts = 32; | |
1884 | break; | |
1885 | case PCI_DEVICE_ID_RPP4: | |
1886 | str = "Plus Quadcable"; | |
1887 | max_num_aiops = 1; | |
1888 | ports_per_aiop = 4; | |
1889 | altChanRingIndicator++; | |
1890 | fast_clock++; | |
1891 | rocketModel[i].model = MODEL_RPP4; | |
1892 | strcpy(rocketModel[i].modelString, "RocketPort Plus 4 port"); | |
1893 | rocketModel[i].numPorts = 4; | |
1894 | break; | |
1895 | case PCI_DEVICE_ID_RPP8: | |
1896 | str = "Plus Octacable"; | |
1897 | max_num_aiops = 2; | |
1898 | ports_per_aiop = 4; | |
1899 | altChanRingIndicator++; | |
1900 | fast_clock++; | |
1901 | rocketModel[i].model = MODEL_RPP8; | |
1902 | strcpy(rocketModel[i].modelString, "RocketPort Plus 8 port"); | |
1903 | rocketModel[i].numPorts = 8; | |
1904 | break; | |
1905 | case PCI_DEVICE_ID_RP2_232: | |
1906 | str = "Plus 2 (RS-232)"; | |
1907 | max_num_aiops = 1; | |
1908 | ports_per_aiop = 2; | |
1909 | altChanRingIndicator++; | |
1910 | fast_clock++; | |
1911 | rocketModel[i].model = MODEL_RP2_232; | |
1912 | strcpy(rocketModel[i].modelString, "RocketPort Plus 2 port RS232"); | |
1913 | rocketModel[i].numPorts = 2; | |
1914 | break; | |
1915 | case PCI_DEVICE_ID_RP2_422: | |
1916 | str = "Plus 2 (RS-422)"; | |
1917 | max_num_aiops = 1; | |
1918 | ports_per_aiop = 2; | |
1919 | altChanRingIndicator++; | |
1920 | fast_clock++; | |
1921 | rocketModel[i].model = MODEL_RP2_422; | |
1922 | strcpy(rocketModel[i].modelString, "RocketPort Plus 2 port RS422"); | |
1923 | rocketModel[i].numPorts = 2; | |
1924 | break; | |
1925 | case PCI_DEVICE_ID_RP6M: | |
1926 | ||
1927 | max_num_aiops = 1; | |
1928 | ports_per_aiop = 6; | |
1929 | str = "6-port"; | |
1930 | ||
57fedc7a JS |
1931 | /* If revision is 1, the rocketmodem flash must be loaded. |
1932 | * If it is 2 it is a "socketed" version. */ | |
1933 | if (dev->revision == 1) { | |
1da177e4 LT |
1934 | rcktpt_type[i] = ROCKET_TYPE_MODEMII; |
1935 | rocketModel[i].loadrm2 = 1; | |
1936 | } else { | |
1937 | rcktpt_type[i] = ROCKET_TYPE_MODEM; | |
1938 | } | |
1939 | ||
1940 | rocketModel[i].model = MODEL_RP6M; | |
1941 | strcpy(rocketModel[i].modelString, "RocketModem 6 port"); | |
1942 | rocketModel[i].numPorts = 6; | |
1943 | break; | |
1944 | case PCI_DEVICE_ID_RP4M: | |
1945 | max_num_aiops = 1; | |
1946 | ports_per_aiop = 4; | |
1947 | str = "4-port"; | |
57fedc7a | 1948 | if (dev->revision == 1) { |
1da177e4 LT |
1949 | rcktpt_type[i] = ROCKET_TYPE_MODEMII; |
1950 | rocketModel[i].loadrm2 = 1; | |
1951 | } else { | |
1952 | rcktpt_type[i] = ROCKET_TYPE_MODEM; | |
1953 | } | |
1954 | ||
1955 | rocketModel[i].model = MODEL_RP4M; | |
1956 | strcpy(rocketModel[i].modelString, "RocketModem 4 port"); | |
1957 | rocketModel[i].numPorts = 4; | |
1958 | break; | |
1959 | default: | |
1960 | str = "(unknown/unsupported)"; | |
1961 | max_num_aiops = 0; | |
1962 | break; | |
1963 | } | |
1964 | ||
1965 | /* | |
1966 | * Check for UPCI boards. | |
1967 | */ | |
1968 | ||
1969 | switch (dev->device) { | |
1970 | case PCI_DEVICE_ID_URP32INTF: | |
1971 | case PCI_DEVICE_ID_URP8INTF: | |
1972 | case PCI_DEVICE_ID_URP16INTF: | |
1973 | case PCI_DEVICE_ID_CRP16INTF: | |
1974 | case PCI_DEVICE_ID_URP8OCTA: | |
1975 | rcktpt_io_addr[i] = pci_resource_start(dev, 2); | |
1976 | ConfigIO = pci_resource_start(dev, 1); | |
1977 | if (dev->device == PCI_DEVICE_ID_URP8OCTA) { | |
1978 | UPCIRingInd = rcktpt_io_addr[i] + _PCI_9030_RING_IND; | |
1979 | ||
1980 | /* | |
1981 | * Check for octa or quad cable. | |
1982 | */ | |
1983 | if (! | |
1984 | (sInW(ConfigIO + _PCI_9030_GPIO_CTRL) & | |
1985 | PCI_GPIO_CTRL_8PORT)) { | |
1986 | str = "Quadcable"; | |
1987 | ports_per_aiop = 4; | |
1988 | rocketModel[i].numPorts = 4; | |
1989 | } | |
1990 | } | |
1991 | break; | |
1992 | case PCI_DEVICE_ID_UPCI_RM3_8PORT: | |
1993 | str = "8 ports"; | |
1994 | max_num_aiops = 1; | |
1995 | rocketModel[i].model = MODEL_UPCI_RM3_8PORT; | |
1996 | strcpy(rocketModel[i].modelString, "RocketModem III 8 port"); | |
1997 | rocketModel[i].numPorts = 8; | |
1998 | rcktpt_io_addr[i] = pci_resource_start(dev, 2); | |
1999 | UPCIRingInd = rcktpt_io_addr[i] + _PCI_9030_RING_IND; | |
2000 | ConfigIO = pci_resource_start(dev, 1); | |
2001 | rcktpt_type[i] = ROCKET_TYPE_MODEMIII; | |
2002 | break; | |
2003 | case PCI_DEVICE_ID_UPCI_RM3_4PORT: | |
2004 | str = "4 ports"; | |
2005 | max_num_aiops = 1; | |
2006 | rocketModel[i].model = MODEL_UPCI_RM3_4PORT; | |
2007 | strcpy(rocketModel[i].modelString, "RocketModem III 4 port"); | |
2008 | rocketModel[i].numPorts = 4; | |
2009 | rcktpt_io_addr[i] = pci_resource_start(dev, 2); | |
2010 | UPCIRingInd = rcktpt_io_addr[i] + _PCI_9030_RING_IND; | |
2011 | ConfigIO = pci_resource_start(dev, 1); | |
2012 | rcktpt_type[i] = ROCKET_TYPE_MODEMIII; | |
2013 | break; | |
2014 | default: | |
2015 | break; | |
2016 | } | |
2017 | ||
2018 | switch (rcktpt_type[i]) { | |
2019 | case ROCKET_TYPE_MODEM: | |
2020 | board_type = "RocketModem"; | |
2021 | break; | |
2022 | case ROCKET_TYPE_MODEMII: | |
2023 | board_type = "RocketModem II"; | |
2024 | break; | |
2025 | case ROCKET_TYPE_MODEMIII: | |
2026 | board_type = "RocketModem III"; | |
2027 | break; | |
2028 | default: | |
2029 | board_type = "RocketPort"; | |
2030 | break; | |
2031 | } | |
2032 | ||
2033 | if (fast_clock) { | |
2034 | sClockPrescale = 0x12; /* mod 2 (divide by 3) */ | |
2035 | rp_baud_base[i] = 921600; | |
2036 | } else { | |
2037 | /* | |
2038 | * If support_low_speed is set, use the slow clock | |
2039 | * prescale, which supports 50 bps | |
2040 | */ | |
2041 | if (support_low_speed) { | |
2042 | /* mod 9 (divide by 10) prescale */ | |
2043 | sClockPrescale = 0x19; | |
2044 | rp_baud_base[i] = 230400; | |
2045 | } else { | |
2046 | /* mod 4 (devide by 5) prescale */ | |
2047 | sClockPrescale = 0x14; | |
2048 | rp_baud_base[i] = 460800; | |
2049 | } | |
2050 | } | |
2051 | ||
2052 | for (aiop = 0; aiop < max_num_aiops; aiop++) | |
2053 | aiopio[aiop] = rcktpt_io_addr[i] + (aiop * 0x40); | |
2054 | ctlp = sCtlNumToCtlPtr(i); | |
2055 | num_aiops = sPCIInitController(ctlp, i, aiopio, max_num_aiops, ConfigIO, 0, FREQ_DIS, 0, altChanRingIndicator, UPCIRingInd); | |
2056 | for (aiop = 0; aiop < max_num_aiops; aiop++) | |
2057 | ctlp->AiopNumChan[aiop] = ports_per_aiop; | |
2058 | ||
68562b79 JS |
2059 | dev_info(&dev->dev, "comtrol PCI controller #%d found at " |
2060 | "address %04lx, %d AIOP(s) (%s), creating ttyR%d - %ld\n", | |
2061 | i, rcktpt_io_addr[i], num_aiops, rocketModel[i].modelString, | |
2062 | rocketModel[i].startingPortNumber, | |
2063 | rocketModel[i].startingPortNumber + rocketModel[i].numPorts-1); | |
1da177e4 LT |
2064 | |
2065 | if (num_aiops <= 0) { | |
2066 | rcktpt_io_addr[i] = 0; | |
2067 | return (0); | |
2068 | } | |
2069 | is_PCI[i] = 1; | |
2070 | ||
2071 | /* Reset the AIOPIC, init the serial ports */ | |
2072 | for (aiop = 0; aiop < num_aiops; aiop++) { | |
2073 | sResetAiopByNum(ctlp, aiop); | |
2074 | num_chan = ports_per_aiop; | |
2075 | for (chan = 0; chan < num_chan; chan++) | |
2076 | init_r_port(i, aiop, chan, dev); | |
2077 | } | |
2078 | ||
2079 | /* Rocket modems must be reset */ | |
2080 | if ((rcktpt_type[i] == ROCKET_TYPE_MODEM) || | |
2081 | (rcktpt_type[i] == ROCKET_TYPE_MODEMII) || | |
2082 | (rcktpt_type[i] == ROCKET_TYPE_MODEMIII)) { | |
2083 | num_chan = ports_per_aiop; | |
2084 | for (chan = 0; chan < num_chan; chan++) | |
2085 | sPCIModemReset(ctlp, chan, 1); | |
48a67f5d | 2086 | msleep(500); |
1da177e4 LT |
2087 | for (chan = 0; chan < num_chan; chan++) |
2088 | sPCIModemReset(ctlp, chan, 0); | |
48a67f5d | 2089 | msleep(500); |
1da177e4 LT |
2090 | rmSpeakerReset(ctlp, rocketModel[i].model); |
2091 | } | |
2092 | return (1); | |
2093 | } | |
2094 | ||
2095 | /* | |
2096 | * Probes for PCI cards, inits them if found | |
2097 | * Input: board_found = number of ISA boards already found, or the | |
2098 | * starting board number | |
2099 | * Returns: Number of PCI boards found | |
2100 | */ | |
2101 | static int __init init_PCI(int boards_found) | |
2102 | { | |
2103 | struct pci_dev *dev = NULL; | |
2104 | int count = 0; | |
2105 | ||
2106 | /* Work through the PCI device list, pulling out ours */ | |
606d099c | 2107 | while ((dev = pci_get_device(PCI_VENDOR_ID_RP, PCI_ANY_ID, dev))) { |
1da177e4 LT |
2108 | if (register_PCI(count + boards_found, dev)) |
2109 | count++; | |
2110 | } | |
2111 | return (count); | |
2112 | } | |
2113 | ||
2114 | #endif /* CONFIG_PCI */ | |
2115 | ||
2116 | /* | |
2117 | * Probes for ISA cards | |
2118 | * Input: i = the board number to look for | |
2119 | * Returns: 1 if board found, 0 else | |
2120 | */ | |
2121 | static int __init init_ISA(int i) | |
2122 | { | |
2123 | int num_aiops, num_chan = 0, total_num_chan = 0; | |
2124 | int aiop, chan; | |
2125 | unsigned int aiopio[MAX_AIOPS_PER_BOARD]; | |
2126 | CONTROLLER_t *ctlp; | |
2127 | char *type_string; | |
2128 | ||
2129 | /* If io_addr is zero, no board configured */ | |
2130 | if (rcktpt_io_addr[i] == 0) | |
2131 | return (0); | |
2132 | ||
2133 | /* Reserve the IO region */ | |
2134 | if (!request_region(rcktpt_io_addr[i], 64, "Comtrol RocketPort")) { | |
68562b79 JS |
2135 | printk(KERN_ERR "Unable to reserve IO region for configured " |
2136 | "ISA RocketPort at address 0x%lx, board not " | |
2137 | "installed...\n", rcktpt_io_addr[i]); | |
1da177e4 LT |
2138 | rcktpt_io_addr[i] = 0; |
2139 | return (0); | |
2140 | } | |
2141 | ||
2142 | ctlp = sCtlNumToCtlPtr(i); | |
2143 | ||
2144 | ctlp->boardType = rcktpt_type[i]; | |
2145 | ||
2146 | switch (rcktpt_type[i]) { | |
2147 | case ROCKET_TYPE_PC104: | |
2148 | type_string = "(PC104)"; | |
2149 | break; | |
2150 | case ROCKET_TYPE_MODEM: | |
2151 | type_string = "(RocketModem)"; | |
2152 | break; | |
2153 | case ROCKET_TYPE_MODEMII: | |
2154 | type_string = "(RocketModem II)"; | |
2155 | break; | |
2156 | default: | |
2157 | type_string = ""; | |
2158 | break; | |
2159 | } | |
2160 | ||
2161 | /* | |
2162 | * If support_low_speed is set, use the slow clock prescale, | |
2163 | * which supports 50 bps | |
2164 | */ | |
2165 | if (support_low_speed) { | |
2166 | sClockPrescale = 0x19; /* mod 9 (divide by 10) prescale */ | |
2167 | rp_baud_base[i] = 230400; | |
2168 | } else { | |
2169 | sClockPrescale = 0x14; /* mod 4 (devide by 5) prescale */ | |
2170 | rp_baud_base[i] = 460800; | |
2171 | } | |
2172 | ||
2173 | for (aiop = 0; aiop < MAX_AIOPS_PER_BOARD; aiop++) | |
2174 | aiopio[aiop] = rcktpt_io_addr[i] + (aiop * 0x400); | |
2175 | ||
2176 | num_aiops = sInitController(ctlp, i, controller + (i * 0x400), aiopio, MAX_AIOPS_PER_BOARD, 0, FREQ_DIS, 0); | |
2177 | ||
2178 | if (ctlp->boardType == ROCKET_TYPE_PC104) { | |
2179 | sEnAiop(ctlp, 2); /* only one AIOPIC, but these */ | |
2180 | sEnAiop(ctlp, 3); /* CSels used for other stuff */ | |
2181 | } | |
2182 | ||
2183 | /* If something went wrong initing the AIOP's release the ISA IO memory */ | |
2184 | if (num_aiops <= 0) { | |
2185 | release_region(rcktpt_io_addr[i], 64); | |
2186 | rcktpt_io_addr[i] = 0; | |
2187 | return (0); | |
2188 | } | |
2189 | ||
2190 | rocketModel[i].startingPortNumber = nextLineNumber; | |
2191 | ||
2192 | for (aiop = 0; aiop < num_aiops; aiop++) { | |
2193 | sResetAiopByNum(ctlp, aiop); | |
2194 | sEnAiop(ctlp, aiop); | |
2195 | num_chan = sGetAiopNumChan(ctlp, aiop); | |
2196 | total_num_chan += num_chan; | |
2197 | for (chan = 0; chan < num_chan; chan++) | |
2198 | init_r_port(i, aiop, chan, NULL); | |
2199 | } | |
2200 | is_PCI[i] = 0; | |
2201 | if ((rcktpt_type[i] == ROCKET_TYPE_MODEM) || (rcktpt_type[i] == ROCKET_TYPE_MODEMII)) { | |
2202 | num_chan = sGetAiopNumChan(ctlp, 0); | |
2203 | total_num_chan = num_chan; | |
2204 | for (chan = 0; chan < num_chan; chan++) | |
2205 | sModemReset(ctlp, chan, 1); | |
48a67f5d | 2206 | msleep(500); |
1da177e4 LT |
2207 | for (chan = 0; chan < num_chan; chan++) |
2208 | sModemReset(ctlp, chan, 0); | |
48a67f5d | 2209 | msleep(500); |
1da177e4 LT |
2210 | strcpy(rocketModel[i].modelString, "RocketModem ISA"); |
2211 | } else { | |
2212 | strcpy(rocketModel[i].modelString, "RocketPort ISA"); | |
2213 | } | |
2214 | rocketModel[i].numPorts = total_num_chan; | |
2215 | rocketModel[i].model = MODEL_ISA; | |
2216 | ||
2217 | printk(KERN_INFO "RocketPort ISA card #%d found at 0x%lx - %d AIOPs %s\n", | |
2218 | i, rcktpt_io_addr[i], num_aiops, type_string); | |
2219 | ||
2220 | printk(KERN_INFO "Installing %s, creating /dev/ttyR%d - %ld\n", | |
2221 | rocketModel[i].modelString, | |
2222 | rocketModel[i].startingPortNumber, | |
2223 | rocketModel[i].startingPortNumber + | |
2224 | rocketModel[i].numPorts - 1); | |
2225 | ||
2226 | return (1); | |
2227 | } | |
2228 | ||
b68e31d0 | 2229 | static const struct tty_operations rocket_ops = { |
1da177e4 LT |
2230 | .open = rp_open, |
2231 | .close = rp_close, | |
2232 | .write = rp_write, | |
2233 | .put_char = rp_put_char, | |
2234 | .write_room = rp_write_room, | |
2235 | .chars_in_buffer = rp_chars_in_buffer, | |
2236 | .flush_buffer = rp_flush_buffer, | |
2237 | .ioctl = rp_ioctl, | |
2238 | .throttle = rp_throttle, | |
2239 | .unthrottle = rp_unthrottle, | |
2240 | .set_termios = rp_set_termios, | |
2241 | .stop = rp_stop, | |
2242 | .start = rp_start, | |
2243 | .hangup = rp_hangup, | |
2244 | .break_ctl = rp_break, | |
2245 | .send_xchar = rp_send_xchar, | |
2246 | .wait_until_sent = rp_wait_until_sent, | |
2247 | .tiocmget = rp_tiocmget, | |
2248 | .tiocmset = rp_tiocmset, | |
2249 | }; | |
2250 | ||
31f35939 AC |
2251 | static const struct tty_port_operations rocket_port_ops = { |
2252 | .carrier_raised = carrier_raised, | |
5d951fb4 | 2253 | .raise_dtr_rts = raise_dtr_rts, |
31f35939 AC |
2254 | }; |
2255 | ||
1da177e4 LT |
2256 | /* |
2257 | * The module "startup" routine; it's run when the module is loaded. | |
2258 | */ | |
d269cdd0 | 2259 | static int __init rp_init(void) |
1da177e4 | 2260 | { |
4384a3fa | 2261 | int ret = -ENOMEM, pci_boards_found, isa_boards_found, i; |
1da177e4 LT |
2262 | |
2263 | printk(KERN_INFO "RocketPort device driver module, version %s, %s\n", | |
2264 | ROCKET_VERSION, ROCKET_DATE); | |
2265 | ||
2266 | rocket_driver = alloc_tty_driver(MAX_RP_PORTS); | |
2267 | if (!rocket_driver) | |
4384a3fa | 2268 | goto err; |
1da177e4 | 2269 | |
1da177e4 LT |
2270 | /* |
2271 | * If board 1 is non-zero, there is at least one ISA configured. If controller is | |
2272 | * zero, use the default controller IO address of board1 + 0x40. | |
2273 | */ | |
2274 | if (board1) { | |
2275 | if (controller == 0) | |
2276 | controller = board1 + 0x40; | |
2277 | } else { | |
2278 | controller = 0; /* Used as a flag, meaning no ISA boards */ | |
2279 | } | |
2280 | ||
2281 | /* If an ISA card is configured, reserve the 4 byte IO space for the Mudbac controller */ | |
2282 | if (controller && (!request_region(controller, 4, "Comtrol RocketPort"))) { | |
4384a3fa JS |
2283 | printk(KERN_ERR "Unable to reserve IO region for first " |
2284 | "configured ISA RocketPort controller 0x%lx. " | |
2285 | "Driver exiting\n", controller); | |
2286 | ret = -EBUSY; | |
2287 | goto err_tty; | |
1da177e4 LT |
2288 | } |
2289 | ||
2290 | /* Store ISA variable retrieved from command line or .conf file. */ | |
2291 | rcktpt_io_addr[0] = board1; | |
2292 | rcktpt_io_addr[1] = board2; | |
2293 | rcktpt_io_addr[2] = board3; | |
2294 | rcktpt_io_addr[3] = board4; | |
2295 | ||
2296 | rcktpt_type[0] = modem1 ? ROCKET_TYPE_MODEM : ROCKET_TYPE_NORMAL; | |
2297 | rcktpt_type[0] = pc104_1[0] ? ROCKET_TYPE_PC104 : rcktpt_type[0]; | |
2298 | rcktpt_type[1] = modem2 ? ROCKET_TYPE_MODEM : ROCKET_TYPE_NORMAL; | |
2299 | rcktpt_type[1] = pc104_2[0] ? ROCKET_TYPE_PC104 : rcktpt_type[1]; | |
2300 | rcktpt_type[2] = modem3 ? ROCKET_TYPE_MODEM : ROCKET_TYPE_NORMAL; | |
2301 | rcktpt_type[2] = pc104_3[0] ? ROCKET_TYPE_PC104 : rcktpt_type[2]; | |
2302 | rcktpt_type[3] = modem4 ? ROCKET_TYPE_MODEM : ROCKET_TYPE_NORMAL; | |
2303 | rcktpt_type[3] = pc104_4[0] ? ROCKET_TYPE_PC104 : rcktpt_type[3]; | |
2304 | ||
2305 | /* | |
2306 | * Set up the tty driver structure and then register this | |
2307 | * driver with the tty layer. | |
2308 | */ | |
2309 | ||
2310 | rocket_driver->owner = THIS_MODULE; | |
331b8319 | 2311 | rocket_driver->flags = TTY_DRIVER_DYNAMIC_DEV; |
1da177e4 LT |
2312 | rocket_driver->name = "ttyR"; |
2313 | rocket_driver->driver_name = "Comtrol RocketPort"; | |
2314 | rocket_driver->major = TTY_ROCKET_MAJOR; | |
2315 | rocket_driver->minor_start = 0; | |
2316 | rocket_driver->type = TTY_DRIVER_TYPE_SERIAL; | |
2317 | rocket_driver->subtype = SERIAL_TYPE_NORMAL; | |
2318 | rocket_driver->init_termios = tty_std_termios; | |
2319 | rocket_driver->init_termios.c_cflag = | |
2320 | B9600 | CS8 | CREAD | HUPCL | CLOCAL; | |
606d099c AC |
2321 | rocket_driver->init_termios.c_ispeed = 9600; |
2322 | rocket_driver->init_termios.c_ospeed = 9600; | |
1da177e4 | 2323 | #ifdef ROCKET_SOFT_FLOW |
ac6aec2f | 2324 | rocket_driver->flags |= TTY_DRIVER_REAL_RAW; |
1da177e4 LT |
2325 | #endif |
2326 | tty_set_operations(rocket_driver, &rocket_ops); | |
2327 | ||
4384a3fa JS |
2328 | ret = tty_register_driver(rocket_driver); |
2329 | if (ret < 0) { | |
2330 | printk(KERN_ERR "Couldn't install tty RocketPort driver\n"); | |
2331 | goto err_tty; | |
1da177e4 LT |
2332 | } |
2333 | ||
2334 | #ifdef ROCKET_DEBUG_OPEN | |
2335 | printk(KERN_INFO "RocketPort driver is major %d\n", rocket_driver.major); | |
2336 | #endif | |
2337 | ||
2338 | /* | |
2339 | * OK, let's probe each of the controllers looking for boards. Any boards found | |
2340 | * will be initialized here. | |
2341 | */ | |
2342 | isa_boards_found = 0; | |
2343 | pci_boards_found = 0; | |
2344 | ||
2345 | for (i = 0; i < NUM_BOARDS; i++) { | |
2346 | if (init_ISA(i)) | |
2347 | isa_boards_found++; | |
2348 | } | |
2349 | ||
2350 | #ifdef CONFIG_PCI | |
2351 | if (isa_boards_found < NUM_BOARDS) | |
2352 | pci_boards_found = init_PCI(isa_boards_found); | |
2353 | #endif | |
2354 | ||
2355 | max_board = pci_boards_found + isa_boards_found; | |
2356 | ||
2357 | if (max_board == 0) { | |
4384a3fa JS |
2358 | printk(KERN_ERR "No rocketport ports found; unloading driver\n"); |
2359 | ret = -ENXIO; | |
2360 | goto err_ttyu; | |
1da177e4 LT |
2361 | } |
2362 | ||
2363 | return 0; | |
4384a3fa JS |
2364 | err_ttyu: |
2365 | tty_unregister_driver(rocket_driver); | |
2366 | err_tty: | |
2367 | put_tty_driver(rocket_driver); | |
2368 | err: | |
2369 | return ret; | |
1da177e4 LT |
2370 | } |
2371 | ||
1da177e4 LT |
2372 | |
2373 | static void rp_cleanup_module(void) | |
2374 | { | |
2375 | int retval; | |
2376 | int i; | |
2377 | ||
2378 | del_timer_sync(&rocket_timer); | |
2379 | ||
2380 | retval = tty_unregister_driver(rocket_driver); | |
2381 | if (retval) | |
68562b79 | 2382 | printk(KERN_ERR "Error %d while trying to unregister " |
1da177e4 | 2383 | "rocketport driver\n", -retval); |
1da177e4 | 2384 | |
735d5661 | 2385 | for (i = 0; i < MAX_RP_PORTS; i++) |
ac6aec2f JS |
2386 | if (rp_table[i]) { |
2387 | tty_unregister_device(rocket_driver, i); | |
2388 | kfree(rp_table[i]); | |
2389 | } | |
2390 | ||
2391 | put_tty_driver(rocket_driver); | |
1da177e4 LT |
2392 | |
2393 | for (i = 0; i < NUM_BOARDS; i++) { | |
2394 | if (rcktpt_io_addr[i] <= 0 || is_PCI[i]) | |
2395 | continue; | |
2396 | release_region(rcktpt_io_addr[i], 64); | |
2397 | } | |
2398 | if (controller) | |
2399 | release_region(controller, 4); | |
2400 | } | |
1da177e4 | 2401 | |
1da177e4 LT |
2402 | /*************************************************************************** |
2403 | Function: sInitController | |
2404 | Purpose: Initialization of controller global registers and controller | |
2405 | structure. | |
2406 | Call: sInitController(CtlP,CtlNum,MudbacIO,AiopIOList,AiopIOListSize, | |
2407 | IRQNum,Frequency,PeriodicOnly) | |
2408 | CONTROLLER_T *CtlP; Ptr to controller structure | |
2409 | int CtlNum; Controller number | |
2410 | ByteIO_t MudbacIO; Mudbac base I/O address. | |
2411 | ByteIO_t *AiopIOList; List of I/O addresses for each AIOP. | |
2412 | This list must be in the order the AIOPs will be found on the | |
2413 | controller. Once an AIOP in the list is not found, it is | |
2414 | assumed that there are no more AIOPs on the controller. | |
2415 | int AiopIOListSize; Number of addresses in AiopIOList | |
2416 | int IRQNum; Interrupt Request number. Can be any of the following: | |
2417 | 0: Disable global interrupts | |
2418 | 3: IRQ 3 | |
2419 | 4: IRQ 4 | |
2420 | 5: IRQ 5 | |
2421 | 9: IRQ 9 | |
2422 | 10: IRQ 10 | |
2423 | 11: IRQ 11 | |
2424 | 12: IRQ 12 | |
2425 | 15: IRQ 15 | |
2426 | Byte_t Frequency: A flag identifying the frequency | |
2427 | of the periodic interrupt, can be any one of the following: | |
2428 | FREQ_DIS - periodic interrupt disabled | |
2429 | FREQ_137HZ - 137 Hertz | |
2430 | FREQ_69HZ - 69 Hertz | |
2431 | FREQ_34HZ - 34 Hertz | |
2432 | FREQ_17HZ - 17 Hertz | |
2433 | FREQ_9HZ - 9 Hertz | |
2434 | FREQ_4HZ - 4 Hertz | |
2435 | If IRQNum is set to 0 the Frequency parameter is | |
2436 | overidden, it is forced to a value of FREQ_DIS. | |
f15313bf | 2437 | int PeriodicOnly: 1 if all interrupts except the periodic |
1da177e4 | 2438 | interrupt are to be blocked. |
f15313bf | 2439 | 0 is both the periodic interrupt and |
1da177e4 LT |
2440 | other channel interrupts are allowed. |
2441 | If IRQNum is set to 0 the PeriodicOnly parameter is | |
f15313bf | 2442 | overidden, it is forced to a value of 0. |
1da177e4 LT |
2443 | Return: int: Number of AIOPs on the controller, or CTLID_NULL if controller |
2444 | initialization failed. | |
2445 | ||
2446 | Comments: | |
2447 | If periodic interrupts are to be disabled but AIOP interrupts | |
f15313bf | 2448 | are allowed, set Frequency to FREQ_DIS and PeriodicOnly to 0. |
1da177e4 LT |
2449 | |
2450 | If interrupts are to be completely disabled set IRQNum to 0. | |
2451 | ||
f15313bf | 2452 | Setting Frequency to FREQ_DIS and PeriodicOnly to 1 is an |
1da177e4 LT |
2453 | invalid combination. |
2454 | ||
2455 | This function performs initialization of global interrupt modes, | |
2456 | but it does not actually enable global interrupts. To enable | |
2457 | and disable global interrupts use functions sEnGlobalInt() and | |
2458 | sDisGlobalInt(). Enabling of global interrupts is normally not | |
2459 | done until all other initializations are complete. | |
2460 | ||
2461 | Even if interrupts are globally enabled, they must also be | |
2462 | individually enabled for each channel that is to generate | |
2463 | interrupts. | |
2464 | ||
2465 | Warnings: No range checking on any of the parameters is done. | |
2466 | ||
2467 | No context switches are allowed while executing this function. | |
2468 | ||
2469 | After this function all AIOPs on the controller are disabled, | |
2470 | they can be enabled with sEnAiop(). | |
2471 | */ | |
f15313bf AB |
2472 | static int sInitController(CONTROLLER_T * CtlP, int CtlNum, ByteIO_t MudbacIO, |
2473 | ByteIO_t * AiopIOList, int AiopIOListSize, | |
2474 | int IRQNum, Byte_t Frequency, int PeriodicOnly) | |
1da177e4 LT |
2475 | { |
2476 | int i; | |
2477 | ByteIO_t io; | |
2478 | int done; | |
2479 | ||
2480 | CtlP->AiopIntrBits = aiop_intr_bits; | |
2481 | CtlP->AltChanRingIndicator = 0; | |
2482 | CtlP->CtlNum = CtlNum; | |
2483 | CtlP->CtlID = CTLID_0001; /* controller release 1 */ | |
2484 | CtlP->BusType = isISA; | |
2485 | CtlP->MBaseIO = MudbacIO; | |
2486 | CtlP->MReg1IO = MudbacIO + 1; | |
2487 | CtlP->MReg2IO = MudbacIO + 2; | |
2488 | CtlP->MReg3IO = MudbacIO + 3; | |
2489 | #if 1 | |
2490 | CtlP->MReg2 = 0; /* interrupt disable */ | |
2491 | CtlP->MReg3 = 0; /* no periodic interrupts */ | |
2492 | #else | |
2493 | if (sIRQMap[IRQNum] == 0) { /* interrupts globally disabled */ | |
2494 | CtlP->MReg2 = 0; /* interrupt disable */ | |
2495 | CtlP->MReg3 = 0; /* no periodic interrupts */ | |
2496 | } else { | |
2497 | CtlP->MReg2 = sIRQMap[IRQNum]; /* set IRQ number */ | |
2498 | CtlP->MReg3 = Frequency; /* set frequency */ | |
2499 | if (PeriodicOnly) { /* periodic interrupt only */ | |
2500 | CtlP->MReg3 |= PERIODIC_ONLY; | |
2501 | } | |
2502 | } | |
2503 | #endif | |
2504 | sOutB(CtlP->MReg2IO, CtlP->MReg2); | |
2505 | sOutB(CtlP->MReg3IO, CtlP->MReg3); | |
2506 | sControllerEOI(CtlP); /* clear EOI if warm init */ | |
2507 | /* Init AIOPs */ | |
2508 | CtlP->NumAiop = 0; | |
2509 | for (i = done = 0; i < AiopIOListSize; i++) { | |
2510 | io = AiopIOList[i]; | |
2511 | CtlP->AiopIO[i] = (WordIO_t) io; | |
2512 | CtlP->AiopIntChanIO[i] = io + _INT_CHAN; | |
2513 | sOutB(CtlP->MReg2IO, CtlP->MReg2 | (i & 0x03)); /* AIOP index */ | |
2514 | sOutB(MudbacIO, (Byte_t) (io >> 6)); /* set up AIOP I/O in MUDBAC */ | |
2515 | if (done) | |
2516 | continue; | |
2517 | sEnAiop(CtlP, i); /* enable the AIOP */ | |
2518 | CtlP->AiopID[i] = sReadAiopID(io); /* read AIOP ID */ | |
2519 | if (CtlP->AiopID[i] == AIOPID_NULL) /* if AIOP does not exist */ | |
2520 | done = 1; /* done looking for AIOPs */ | |
2521 | else { | |
2522 | CtlP->AiopNumChan[i] = sReadAiopNumChan((WordIO_t) io); /* num channels in AIOP */ | |
2523 | sOutW((WordIO_t) io + _INDX_ADDR, _CLK_PRE); /* clock prescaler */ | |
2524 | sOutB(io + _INDX_DATA, sClockPrescale); | |
2525 | CtlP->NumAiop++; /* bump count of AIOPs */ | |
2526 | } | |
2527 | sDisAiop(CtlP, i); /* disable AIOP */ | |
2528 | } | |
2529 | ||
2530 | if (CtlP->NumAiop == 0) | |
2531 | return (-1); | |
2532 | else | |
2533 | return (CtlP->NumAiop); | |
2534 | } | |
2535 | ||
2536 | /*************************************************************************** | |
2537 | Function: sPCIInitController | |
2538 | Purpose: Initialization of controller global registers and controller | |
2539 | structure. | |
2540 | Call: sPCIInitController(CtlP,CtlNum,AiopIOList,AiopIOListSize, | |
2541 | IRQNum,Frequency,PeriodicOnly) | |
2542 | CONTROLLER_T *CtlP; Ptr to controller structure | |
2543 | int CtlNum; Controller number | |
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 | |
2551 | 3: IRQ 3 | |
2552 | 4: IRQ 4 | |
2553 | 5: IRQ 5 | |
2554 | 9: IRQ 9 | |
2555 | 10: IRQ 10 | |
2556 | 11: IRQ 11 | |
2557 | 12: IRQ 12 | |
2558 | 15: IRQ 15 | |
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 | |
2566 | FREQ_9HZ - 9 Hertz | |
2567 | FREQ_4HZ - 4 Hertz | |
2568 | If IRQNum is set to 0 the Frequency parameter is | |
2569 | overidden, it is forced to a value of FREQ_DIS. | |
f15313bf | 2570 | int PeriodicOnly: 1 if all interrupts except the periodic |
1da177e4 | 2571 | interrupt are to be blocked. |
f15313bf | 2572 | 0 is both the periodic interrupt and |
1da177e4 LT |
2573 | other channel interrupts are allowed. |
2574 | If IRQNum is set to 0 the PeriodicOnly parameter is | |
f15313bf | 2575 | overidden, it is forced to a value of 0. |
1da177e4 LT |
2576 | Return: int: Number of AIOPs on the controller, or CTLID_NULL if controller |
2577 | initialization failed. | |
2578 | ||
2579 | Comments: | |
2580 | If periodic interrupts are to be disabled but AIOP interrupts | |
f15313bf | 2581 | are allowed, set Frequency to FREQ_DIS and PeriodicOnly to 0. |
1da177e4 LT |
2582 | |
2583 | If interrupts are to be completely disabled set IRQNum to 0. | |
2584 | ||
f15313bf | 2585 | Setting Frequency to FREQ_DIS and PeriodicOnly to 1 is an |
1da177e4 LT |
2586 | invalid combination. |
2587 | ||
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. | |
2593 | ||
2594 | Even if interrupts are globally enabled, they must also be | |
2595 | individually enabled for each channel that is to generate | |
2596 | interrupts. | |
2597 | ||
2598 | Warnings: No range checking on any of the parameters is done. | |
2599 | ||
2600 | No context switches are allowed while executing this function. | |
2601 | ||
2602 | After this function all AIOPs on the controller are disabled, | |
2603 | they can be enabled with sEnAiop(). | |
2604 | */ | |
f15313bf AB |
2605 | static int sPCIInitController(CONTROLLER_T * CtlP, int CtlNum, |
2606 | ByteIO_t * AiopIOList, int AiopIOListSize, | |
2607 | WordIO_t ConfigIO, int IRQNum, Byte_t Frequency, | |
2608 | int PeriodicOnly, int altChanRingIndicator, | |
2609 | int UPCIRingInd) | |
1da177e4 LT |
2610 | { |
2611 | int i; | |
2612 | ByteIO_t io; | |
2613 | ||
2614 | CtlP->AltChanRingIndicator = altChanRingIndicator; | |
2615 | CtlP->UPCIRingInd = UPCIRingInd; | |
2616 | CtlP->CtlNum = CtlNum; | |
2617 | CtlP->CtlID = CTLID_0001; /* controller release 1 */ | |
2618 | CtlP->BusType = isPCI; /* controller release 1 */ | |
2619 | ||
2620 | if (ConfigIO) { | |
2621 | CtlP->isUPCI = 1; | |
2622 | CtlP->PCIIO = ConfigIO + _PCI_9030_INT_CTRL; | |
2623 | CtlP->PCIIO2 = ConfigIO + _PCI_9030_GPIO_CTRL; | |
2624 | CtlP->AiopIntrBits = upci_aiop_intr_bits; | |
2625 | } else { | |
2626 | CtlP->isUPCI = 0; | |
2627 | CtlP->PCIIO = | |
2628 | (WordIO_t) ((ByteIO_t) AiopIOList[0] + _PCI_INT_FUNC); | |
2629 | CtlP->AiopIntrBits = aiop_intr_bits; | |
2630 | } | |
2631 | ||
2632 | sPCIControllerEOI(CtlP); /* clear EOI if warm init */ | |
2633 | /* Init AIOPs */ | |
2634 | CtlP->NumAiop = 0; | |
2635 | for (i = 0; i < AiopIOListSize; i++) { | |
2636 | io = AiopIOList[i]; | |
2637 | CtlP->AiopIO[i] = (WordIO_t) io; | |
2638 | CtlP->AiopIntChanIO[i] = io + _INT_CHAN; | |
2639 | ||
2640 | CtlP->AiopID[i] = sReadAiopID(io); /* read AIOP ID */ | |
2641 | if (CtlP->AiopID[i] == AIOPID_NULL) /* if AIOP does not exist */ | |
2642 | break; /* done looking for AIOPs */ | |
2643 | ||
2644 | CtlP->AiopNumChan[i] = sReadAiopNumChan((WordIO_t) io); /* num channels in AIOP */ | |
2645 | sOutW((WordIO_t) io + _INDX_ADDR, _CLK_PRE); /* clock prescaler */ | |
2646 | sOutB(io + _INDX_DATA, sClockPrescale); | |
2647 | CtlP->NumAiop++; /* bump count of AIOPs */ | |
2648 | } | |
2649 | ||
2650 | if (CtlP->NumAiop == 0) | |
2651 | return (-1); | |
2652 | else | |
2653 | return (CtlP->NumAiop); | |
2654 | } | |
2655 | ||
2656 | /*************************************************************************** | |
2657 | Function: sReadAiopID | |
2658 | Purpose: Read the AIOP idenfication number directly from an AIOP. | |
2659 | Call: sReadAiopID(io) | |
2660 | ByteIO_t io: AIOP base I/O address | |
2661 | Return: int: Flag AIOPID_XXXX if a valid AIOP is found, where X | |
2662 | is replace by an identifying number. | |
2663 | Flag AIOPID_NULL if no valid AIOP is found | |
2664 | Warnings: No context switches are allowed while executing this function. | |
2665 | ||
2666 | */ | |
f15313bf | 2667 | static int sReadAiopID(ByteIO_t io) |
1da177e4 LT |
2668 | { |
2669 | Byte_t AiopID; /* ID byte from AIOP */ | |
2670 | ||
2671 | sOutB(io + _CMD_REG, RESET_ALL); /* reset AIOP */ | |
2672 | sOutB(io + _CMD_REG, 0x0); | |
2673 | AiopID = sInW(io + _CHN_STAT0) & 0x07; | |
2674 | if (AiopID == 0x06) | |
2675 | return (1); | |
2676 | else /* AIOP does not exist */ | |
2677 | return (-1); | |
2678 | } | |
2679 | ||
2680 | /*************************************************************************** | |
2681 | Function: sReadAiopNumChan | |
2682 | Purpose: Read the number of channels available in an AIOP directly from | |
2683 | an AIOP. | |
2684 | Call: sReadAiopNumChan(io) | |
2685 | WordIO_t io: AIOP base I/O address | |
2686 | Return: int: The number of channels available | |
2687 | Comments: The number of channels is determined by write/reads from identical | |
2688 | offsets within the SRAM address spaces for channels 0 and 4. | |
2689 | If the channel 4 space is mirrored to channel 0 it is a 4 channel | |
2690 | AIOP, otherwise it is an 8 channel. | |
2691 | Warnings: No context switches are allowed while executing this function. | |
2692 | */ | |
f15313bf | 2693 | static int sReadAiopNumChan(WordIO_t io) |
1da177e4 LT |
2694 | { |
2695 | Word_t x; | |
2696 | static Byte_t R[4] = { 0x00, 0x00, 0x34, 0x12 }; | |
2697 | ||
2698 | /* write to chan 0 SRAM */ | |
457fb605 | 2699 | out32((DWordIO_t) io + _INDX_ADDR, R); |
1da177e4 LT |
2700 | sOutW(io + _INDX_ADDR, 0); /* read from SRAM, chan 0 */ |
2701 | x = sInW(io + _INDX_DATA); | |
2702 | sOutW(io + _INDX_ADDR, 0x4000); /* read from SRAM, chan 4 */ | |
2703 | if (x != sInW(io + _INDX_DATA)) /* if different must be 8 chan */ | |
2704 | return (8); | |
2705 | else | |
2706 | return (4); | |
2707 | } | |
2708 | ||
2709 | /*************************************************************************** | |
2710 | Function: sInitChan | |
2711 | Purpose: Initialization of a channel and channel structure | |
2712 | Call: sInitChan(CtlP,ChP,AiopNum,ChanNum) | |
2713 | CONTROLLER_T *CtlP; Ptr to controller structure | |
2714 | CHANNEL_T *ChP; Ptr to channel structure | |
2715 | int AiopNum; AIOP number within controller | |
2716 | int ChanNum; Channel number within AIOP | |
f15313bf | 2717 | Return: int: 1 if initialization succeeded, 0 if it fails because channel |
1da177e4 LT |
2718 | number exceeds number of channels available in AIOP. |
2719 | Comments: This function must be called before a channel can be used. | |
2720 | Warnings: No range checking on any of the parameters is done. | |
2721 | ||
2722 | No context switches are allowed while executing this function. | |
2723 | */ | |
f15313bf AB |
2724 | static int sInitChan(CONTROLLER_T * CtlP, CHANNEL_T * ChP, int AiopNum, |
2725 | int ChanNum) | |
1da177e4 LT |
2726 | { |
2727 | int i; | |
2728 | WordIO_t AiopIO; | |
2729 | WordIO_t ChIOOff; | |
2730 | Byte_t *ChR; | |
2731 | Word_t ChOff; | |
2732 | static Byte_t R[4]; | |
2733 | int brd9600; | |
2734 | ||
2735 | if (ChanNum >= CtlP->AiopNumChan[AiopNum]) | |
f15313bf | 2736 | return 0; /* exceeds num chans in AIOP */ |
1da177e4 LT |
2737 | |
2738 | /* Channel, AIOP, and controller identifiers */ | |
2739 | ChP->CtlP = CtlP; | |
2740 | ChP->ChanID = CtlP->AiopID[AiopNum]; | |
2741 | ChP->AiopNum = AiopNum; | |
2742 | ChP->ChanNum = ChanNum; | |
2743 | ||
2744 | /* Global direct addresses */ | |
2745 | AiopIO = CtlP->AiopIO[AiopNum]; | |
2746 | ChP->Cmd = (ByteIO_t) AiopIO + _CMD_REG; | |
2747 | ChP->IntChan = (ByteIO_t) AiopIO + _INT_CHAN; | |
2748 | ChP->IntMask = (ByteIO_t) AiopIO + _INT_MASK; | |
2749 | ChP->IndexAddr = (DWordIO_t) AiopIO + _INDX_ADDR; | |
2750 | ChP->IndexData = AiopIO + _INDX_DATA; | |
2751 | ||
2752 | /* Channel direct addresses */ | |
2753 | ChIOOff = AiopIO + ChP->ChanNum * 2; | |
2754 | ChP->TxRxData = ChIOOff + _TD0; | |
2755 | ChP->ChanStat = ChIOOff + _CHN_STAT0; | |
2756 | ChP->TxRxCount = ChIOOff + _FIFO_CNT0; | |
2757 | ChP->IntID = (ByteIO_t) AiopIO + ChP->ChanNum + _INT_ID0; | |
2758 | ||
2759 | /* Initialize the channel from the RData array */ | |
2760 | for (i = 0; i < RDATASIZE; i += 4) { | |
2761 | R[0] = RData[i]; | |
2762 | R[1] = RData[i + 1] + 0x10 * ChanNum; | |
2763 | R[2] = RData[i + 2]; | |
2764 | R[3] = RData[i + 3]; | |
457fb605 | 2765 | out32(ChP->IndexAddr, R); |
1da177e4 LT |
2766 | } |
2767 | ||
2768 | ChR = ChP->R; | |
2769 | for (i = 0; i < RREGDATASIZE; i += 4) { | |
2770 | ChR[i] = RRegData[i]; | |
2771 | ChR[i + 1] = RRegData[i + 1] + 0x10 * ChanNum; | |
2772 | ChR[i + 2] = RRegData[i + 2]; | |
2773 | ChR[i + 3] = RRegData[i + 3]; | |
2774 | } | |
2775 | ||
2776 | /* Indexed registers */ | |
2777 | ChOff = (Word_t) ChanNum *0x1000; | |
2778 | ||
2779 | if (sClockPrescale == 0x14) | |
2780 | brd9600 = 47; | |
2781 | else | |
2782 | brd9600 = 23; | |
2783 | ||
2784 | ChP->BaudDiv[0] = (Byte_t) (ChOff + _BAUD); | |
2785 | ChP->BaudDiv[1] = (Byte_t) ((ChOff + _BAUD) >> 8); | |
2786 | ChP->BaudDiv[2] = (Byte_t) brd9600; | |
2787 | ChP->BaudDiv[3] = (Byte_t) (brd9600 >> 8); | |
457fb605 | 2788 | out32(ChP->IndexAddr, ChP->BaudDiv); |
1da177e4 LT |
2789 | |
2790 | ChP->TxControl[0] = (Byte_t) (ChOff + _TX_CTRL); | |
2791 | ChP->TxControl[1] = (Byte_t) ((ChOff + _TX_CTRL) >> 8); | |
2792 | ChP->TxControl[2] = 0; | |
2793 | ChP->TxControl[3] = 0; | |
457fb605 | 2794 | out32(ChP->IndexAddr, ChP->TxControl); |
1da177e4 LT |
2795 | |
2796 | ChP->RxControl[0] = (Byte_t) (ChOff + _RX_CTRL); | |
2797 | ChP->RxControl[1] = (Byte_t) ((ChOff + _RX_CTRL) >> 8); | |
2798 | ChP->RxControl[2] = 0; | |
2799 | ChP->RxControl[3] = 0; | |
457fb605 | 2800 | out32(ChP->IndexAddr, ChP->RxControl); |
1da177e4 LT |
2801 | |
2802 | ChP->TxEnables[0] = (Byte_t) (ChOff + _TX_ENBLS); | |
2803 | ChP->TxEnables[1] = (Byte_t) ((ChOff + _TX_ENBLS) >> 8); | |
2804 | ChP->TxEnables[2] = 0; | |
2805 | ChP->TxEnables[3] = 0; | |
457fb605 | 2806 | out32(ChP->IndexAddr, ChP->TxEnables); |
1da177e4 LT |
2807 | |
2808 | ChP->TxCompare[0] = (Byte_t) (ChOff + _TXCMP1); | |
2809 | ChP->TxCompare[1] = (Byte_t) ((ChOff + _TXCMP1) >> 8); | |
2810 | ChP->TxCompare[2] = 0; | |
2811 | ChP->TxCompare[3] = 0; | |
457fb605 | 2812 | out32(ChP->IndexAddr, ChP->TxCompare); |
1da177e4 LT |
2813 | |
2814 | ChP->TxReplace1[0] = (Byte_t) (ChOff + _TXREP1B1); | |
2815 | ChP->TxReplace1[1] = (Byte_t) ((ChOff + _TXREP1B1) >> 8); | |
2816 | ChP->TxReplace1[2] = 0; | |
2817 | ChP->TxReplace1[3] = 0; | |
457fb605 | 2818 | out32(ChP->IndexAddr, ChP->TxReplace1); |
1da177e4 LT |
2819 | |
2820 | ChP->TxReplace2[0] = (Byte_t) (ChOff + _TXREP2); | |
2821 | ChP->TxReplace2[1] = (Byte_t) ((ChOff + _TXREP2) >> 8); | |
2822 | ChP->TxReplace2[2] = 0; | |
2823 | ChP->TxReplace2[3] = 0; | |
457fb605 | 2824 | out32(ChP->IndexAddr, ChP->TxReplace2); |
1da177e4 LT |
2825 | |
2826 | ChP->TxFIFOPtrs = ChOff + _TXF_OUTP; | |
2827 | ChP->TxFIFO = ChOff + _TX_FIFO; | |
2828 | ||
2829 | sOutB(ChP->Cmd, (Byte_t) ChanNum | RESTXFCNT); /* apply reset Tx FIFO count */ | |
2830 | sOutB(ChP->Cmd, (Byte_t) ChanNum); /* remove reset Tx FIFO count */ | |
2831 | sOutW((WordIO_t) ChP->IndexAddr, ChP->TxFIFOPtrs); /* clear Tx in/out ptrs */ | |
2832 | sOutW(ChP->IndexData, 0); | |
2833 | ChP->RxFIFOPtrs = ChOff + _RXF_OUTP; | |
2834 | ChP->RxFIFO = ChOff + _RX_FIFO; | |
2835 | ||
2836 | sOutB(ChP->Cmd, (Byte_t) ChanNum | RESRXFCNT); /* apply reset Rx FIFO count */ | |
2837 | sOutB(ChP->Cmd, (Byte_t) ChanNum); /* remove reset Rx FIFO count */ | |
2838 | sOutW((WordIO_t) ChP->IndexAddr, ChP->RxFIFOPtrs); /* clear Rx out ptr */ | |
2839 | sOutW(ChP->IndexData, 0); | |
2840 | sOutW((WordIO_t) ChP->IndexAddr, ChP->RxFIFOPtrs + 2); /* clear Rx in ptr */ | |
2841 | sOutW(ChP->IndexData, 0); | |
2842 | ChP->TxPrioCnt = ChOff + _TXP_CNT; | |
2843 | sOutW((WordIO_t) ChP->IndexAddr, ChP->TxPrioCnt); | |
2844 | sOutB(ChP->IndexData, 0); | |
2845 | ChP->TxPrioPtr = ChOff + _TXP_PNTR; | |
2846 | sOutW((WordIO_t) ChP->IndexAddr, ChP->TxPrioPtr); | |
2847 | sOutB(ChP->IndexData, 0); | |
2848 | ChP->TxPrioBuf = ChOff + _TXP_BUF; | |
2849 | sEnRxProcessor(ChP); /* start the Rx processor */ | |
2850 | ||
f15313bf | 2851 | return 1; |
1da177e4 LT |
2852 | } |
2853 | ||
2854 | /*************************************************************************** | |
2855 | Function: sStopRxProcessor | |
2856 | Purpose: Stop the receive processor from processing a channel. | |
2857 | Call: sStopRxProcessor(ChP) | |
2858 | CHANNEL_T *ChP; Ptr to channel structure | |
2859 | ||
2860 | Comments: The receive processor can be started again with sStartRxProcessor(). | |
2861 | This function causes the receive processor to skip over the | |
2862 | stopped channel. It does not stop it from processing other channels. | |
2863 | ||
2864 | Warnings: No context switches are allowed while executing this function. | |
2865 | ||
2866 | Do not leave the receive processor stopped for more than one | |
2867 | character time. | |
2868 | ||
2869 | After calling this function a delay of 4 uS is required to ensure | |
2870 | that the receive processor is no longer processing this channel. | |
2871 | */ | |
f15313bf | 2872 | static void sStopRxProcessor(CHANNEL_T * ChP) |
1da177e4 LT |
2873 | { |
2874 | Byte_t R[4]; | |
2875 | ||
2876 | R[0] = ChP->R[0]; | |
2877 | R[1] = ChP->R[1]; | |
2878 | R[2] = 0x0a; | |
2879 | R[3] = ChP->R[3]; | |
457fb605 | 2880 | out32(ChP->IndexAddr, R); |
1da177e4 LT |
2881 | } |
2882 | ||
2883 | /*************************************************************************** | |
2884 | Function: sFlushRxFIFO | |
2885 | Purpose: Flush the Rx FIFO | |
2886 | Call: sFlushRxFIFO(ChP) | |
2887 | CHANNEL_T *ChP; Ptr to channel structure | |
2888 | Return: void | |
2889 | Comments: To prevent data from being enqueued or dequeued in the Tx FIFO | |
2890 | while it is being flushed the receive processor is stopped | |
2891 | and the transmitter is disabled. After these operations a | |
2892 | 4 uS delay is done before clearing the pointers to allow | |
2893 | the receive processor to stop. These items are handled inside | |
2894 | this function. | |
2895 | Warnings: No context switches are allowed while executing this function. | |
2896 | */ | |
f15313bf | 2897 | static void sFlushRxFIFO(CHANNEL_T * ChP) |
1da177e4 LT |
2898 | { |
2899 | int i; | |
2900 | Byte_t Ch; /* channel number within AIOP */ | |
f15313bf | 2901 | int RxFIFOEnabled; /* 1 if Rx FIFO enabled */ |
1da177e4 LT |
2902 | |
2903 | if (sGetRxCnt(ChP) == 0) /* Rx FIFO empty */ | |
2904 | return; /* don't need to flush */ | |
2905 | ||
f15313bf | 2906 | RxFIFOEnabled = 0; |
1da177e4 | 2907 | if (ChP->R[0x32] == 0x08) { /* Rx FIFO is enabled */ |
f15313bf | 2908 | RxFIFOEnabled = 1; |
1da177e4 LT |
2909 | sDisRxFIFO(ChP); /* disable it */ |
2910 | for (i = 0; i < 2000 / 200; i++) /* delay 2 uS to allow proc to disable FIFO */ | |
2911 | sInB(ChP->IntChan); /* depends on bus i/o timing */ | |
2912 | } | |
2913 | sGetChanStatus(ChP); /* clear any pending Rx errors in chan stat */ | |
2914 | Ch = (Byte_t) sGetChanNum(ChP); | |
2915 | sOutB(ChP->Cmd, Ch | RESRXFCNT); /* apply reset Rx FIFO count */ | |
2916 | sOutB(ChP->Cmd, Ch); /* remove reset Rx FIFO count */ | |
2917 | sOutW((WordIO_t) ChP->IndexAddr, ChP->RxFIFOPtrs); /* clear Rx out ptr */ | |
2918 | sOutW(ChP->IndexData, 0); | |
2919 | sOutW((WordIO_t) ChP->IndexAddr, ChP->RxFIFOPtrs + 2); /* clear Rx in ptr */ | |
2920 | sOutW(ChP->IndexData, 0); | |
2921 | if (RxFIFOEnabled) | |
2922 | sEnRxFIFO(ChP); /* enable Rx FIFO */ | |
2923 | } | |
2924 | ||
2925 | /*************************************************************************** | |
2926 | Function: sFlushTxFIFO | |
2927 | Purpose: Flush the Tx FIFO | |
2928 | Call: sFlushTxFIFO(ChP) | |
2929 | CHANNEL_T *ChP; Ptr to channel structure | |
2930 | Return: void | |
2931 | Comments: To prevent data from being enqueued or dequeued in the Tx FIFO | |
2932 | while it is being flushed the receive processor is stopped | |
2933 | and the transmitter is disabled. After these operations a | |
2934 | 4 uS delay is done before clearing the pointers to allow | |
2935 | the receive processor to stop. These items are handled inside | |
2936 | this function. | |
2937 | Warnings: No context switches are allowed while executing this function. | |
2938 | */ | |
f15313bf | 2939 | static void sFlushTxFIFO(CHANNEL_T * ChP) |
1da177e4 LT |
2940 | { |
2941 | int i; | |
2942 | Byte_t Ch; /* channel number within AIOP */ | |
f15313bf | 2943 | int TxEnabled; /* 1 if transmitter enabled */ |
1da177e4 LT |
2944 | |
2945 | if (sGetTxCnt(ChP) == 0) /* Tx FIFO empty */ | |
2946 | return; /* don't need to flush */ | |
2947 | ||
f15313bf | 2948 | TxEnabled = 0; |
1da177e4 | 2949 | if (ChP->TxControl[3] & TX_ENABLE) { |
f15313bf | 2950 | TxEnabled = 1; |
1da177e4 LT |
2951 | sDisTransmit(ChP); /* disable transmitter */ |
2952 | } | |
2953 | sStopRxProcessor(ChP); /* stop Rx processor */ | |
2954 | for (i = 0; i < 4000 / 200; i++) /* delay 4 uS to allow proc to stop */ | |
2955 | sInB(ChP->IntChan); /* depends on bus i/o timing */ | |
2956 | Ch = (Byte_t) sGetChanNum(ChP); | |
2957 | sOutB(ChP->Cmd, Ch | RESTXFCNT); /* apply reset Tx FIFO count */ | |
2958 | sOutB(ChP->Cmd, Ch); /* remove reset Tx FIFO count */ | |
2959 | sOutW((WordIO_t) ChP->IndexAddr, ChP->TxFIFOPtrs); /* clear Tx in/out ptrs */ | |
2960 | sOutW(ChP->IndexData, 0); | |
2961 | if (TxEnabled) | |
2962 | sEnTransmit(ChP); /* enable transmitter */ | |
2963 | sStartRxProcessor(ChP); /* restart Rx processor */ | |
2964 | } | |
2965 | ||
2966 | /*************************************************************************** | |
2967 | Function: sWriteTxPrioByte | |
2968 | Purpose: Write a byte of priority transmit data to a channel | |
2969 | Call: sWriteTxPrioByte(ChP,Data) | |
2970 | CHANNEL_T *ChP; Ptr to channel structure | |
2971 | Byte_t Data; The transmit data byte | |
2972 | ||
2973 | Return: int: 1 if the bytes is successfully written, otherwise 0. | |
2974 | ||
2975 | Comments: The priority byte is transmitted before any data in the Tx FIFO. | |
2976 | ||
2977 | Warnings: No context switches are allowed while executing this function. | |
2978 | */ | |
f15313bf | 2979 | static int sWriteTxPrioByte(CHANNEL_T * ChP, Byte_t Data) |
1da177e4 LT |
2980 | { |
2981 | Byte_t DWBuf[4]; /* buffer for double word writes */ | |
2982 | Word_t *WordPtr; /* must be far because Win SS != DS */ | |
2983 | register DWordIO_t IndexAddr; | |
2984 | ||
2985 | if (sGetTxCnt(ChP) > 1) { /* write it to Tx priority buffer */ | |
2986 | IndexAddr = ChP->IndexAddr; | |
2987 | sOutW((WordIO_t) IndexAddr, ChP->TxPrioCnt); /* get priority buffer status */ | |
2988 | if (sInB((ByteIO_t) ChP->IndexData) & PRI_PEND) /* priority buffer busy */ | |
2989 | return (0); /* nothing sent */ | |
2990 | ||
2991 | WordPtr = (Word_t *) (&DWBuf[0]); | |
2992 | *WordPtr = ChP->TxPrioBuf; /* data byte address */ | |
2993 | ||
2994 | DWBuf[2] = Data; /* data byte value */ | |
457fb605 | 2995 | out32(IndexAddr, DWBuf); /* write it out */ |
1da177e4 LT |
2996 | |
2997 | *WordPtr = ChP->TxPrioCnt; /* Tx priority count address */ | |
2998 | ||
2999 | DWBuf[2] = PRI_PEND + 1; /* indicate 1 byte pending */ | |
3000 | DWBuf[3] = 0; /* priority buffer pointer */ | |
457fb605 | 3001 | out32(IndexAddr, DWBuf); /* write it out */ |
1da177e4 LT |
3002 | } else { /* write it to Tx FIFO */ |
3003 | ||
3004 | sWriteTxByte(sGetTxRxDataIO(ChP), Data); | |
3005 | } | |
3006 | return (1); /* 1 byte sent */ | |
3007 | } | |
3008 | ||
3009 | /*************************************************************************** | |
3010 | Function: sEnInterrupts | |
3011 | Purpose: Enable one or more interrupts for a channel | |
3012 | Call: sEnInterrupts(ChP,Flags) | |
3013 | CHANNEL_T *ChP; Ptr to channel structure | |
3014 | Word_t Flags: Interrupt enable flags, can be any combination | |
3015 | of the following flags: | |
3016 | TXINT_EN: Interrupt on Tx FIFO empty | |
3017 | RXINT_EN: Interrupt on Rx FIFO at trigger level (see | |
3018 | sSetRxTrigger()) | |
3019 | SRCINT_EN: Interrupt on SRC (Special Rx Condition) | |
3020 | MCINT_EN: Interrupt on modem input change | |
3021 | CHANINT_EN: Allow channel interrupt signal to the AIOP's | |
3022 | Interrupt Channel Register. | |
3023 | Return: void | |
3024 | Comments: If an interrupt enable flag is set in Flags, that interrupt will be | |
3025 | enabled. If an interrupt enable flag is not set in Flags, that | |
3026 | interrupt will not be changed. Interrupts can be disabled with | |
3027 | function sDisInterrupts(). | |
3028 | ||
3029 | This function sets the appropriate bit for the channel in the AIOP's | |
3030 | Interrupt Mask Register if the CHANINT_EN flag is set. This allows | |
3031 | this channel's bit to be set in the AIOP's Interrupt Channel Register. | |
3032 | ||
3033 | Interrupts must also be globally enabled before channel interrupts | |
3034 | will be passed on to the host. This is done with function | |
3035 | sEnGlobalInt(). | |
3036 | ||
3037 | In some cases it may be desirable to disable interrupts globally but | |
3038 | enable channel interrupts. This would allow the global interrupt | |
3039 | status register to be used to determine which AIOPs need service. | |
3040 | */ | |
f15313bf | 3041 | static void sEnInterrupts(CHANNEL_T * ChP, Word_t Flags) |
1da177e4 LT |
3042 | { |
3043 | Byte_t Mask; /* Interrupt Mask Register */ | |
3044 | ||
3045 | ChP->RxControl[2] |= | |
3046 | ((Byte_t) Flags & (RXINT_EN | SRCINT_EN | MCINT_EN)); | |
3047 | ||
457fb605 | 3048 | out32(ChP->IndexAddr, ChP->RxControl); |
1da177e4 LT |
3049 | |
3050 | ChP->TxControl[2] |= ((Byte_t) Flags & TXINT_EN); | |
3051 | ||
457fb605 | 3052 | out32(ChP->IndexAddr, ChP->TxControl); |
1da177e4 LT |
3053 | |
3054 | if (Flags & CHANINT_EN) { | |
3055 | Mask = sInB(ChP->IntMask) | sBitMapSetTbl[ChP->ChanNum]; | |
3056 | sOutB(ChP->IntMask, Mask); | |
3057 | } | |
3058 | } | |
3059 | ||
3060 | /*************************************************************************** | |
3061 | Function: sDisInterrupts | |
3062 | Purpose: Disable one or more interrupts for a channel | |
3063 | Call: sDisInterrupts(ChP,Flags) | |
3064 | CHANNEL_T *ChP; Ptr to channel structure | |
3065 | Word_t Flags: Interrupt flags, can be any combination | |
3066 | of the following flags: | |
3067 | TXINT_EN: Interrupt on Tx FIFO empty | |
3068 | RXINT_EN: Interrupt on Rx FIFO at trigger level (see | |
3069 | sSetRxTrigger()) | |
3070 | SRCINT_EN: Interrupt on SRC (Special Rx Condition) | |
3071 | MCINT_EN: Interrupt on modem input change | |
3072 | CHANINT_EN: Disable channel interrupt signal to the | |
3073 | AIOP's Interrupt Channel Register. | |
3074 | Return: void | |
3075 | Comments: If an interrupt flag is set in Flags, that interrupt will be | |
3076 | disabled. If an interrupt flag is not set in Flags, that | |
3077 | interrupt will not be changed. Interrupts can be enabled with | |
3078 | function sEnInterrupts(). | |
3079 | ||
3080 | This function clears the appropriate bit for the channel in the AIOP's | |
3081 | Interrupt Mask Register if the CHANINT_EN flag is set. This blocks | |
3082 | this channel's bit from being set in the AIOP's Interrupt Channel | |
3083 | Register. | |
3084 | */ | |
f15313bf | 3085 | static void sDisInterrupts(CHANNEL_T * ChP, Word_t Flags) |
1da177e4 LT |
3086 | { |
3087 | Byte_t Mask; /* Interrupt Mask Register */ | |
3088 | ||
3089 | ChP->RxControl[2] &= | |
3090 | ~((Byte_t) Flags & (RXINT_EN | SRCINT_EN | MCINT_EN)); | |
457fb605 | 3091 | out32(ChP->IndexAddr, ChP->RxControl); |
1da177e4 | 3092 | ChP->TxControl[2] &= ~((Byte_t) Flags & TXINT_EN); |
457fb605 | 3093 | out32(ChP->IndexAddr, ChP->TxControl); |
1da177e4 LT |
3094 | |
3095 | if (Flags & CHANINT_EN) { | |
3096 | Mask = sInB(ChP->IntMask) & sBitMapClrTbl[ChP->ChanNum]; | |
3097 | sOutB(ChP->IntMask, Mask); | |
3098 | } | |
3099 | } | |
3100 | ||
f15313bf | 3101 | static void sSetInterfaceMode(CHANNEL_T * ChP, Byte_t mode) |
1da177e4 LT |
3102 | { |
3103 | sOutB(ChP->CtlP->AiopIO[2], (mode & 0x18) | ChP->ChanNum); | |
3104 | } | |
3105 | ||
3106 | /* | |
3107 | * Not an official SSCI function, but how to reset RocketModems. | |
3108 | * ISA bus version | |
3109 | */ | |
f15313bf | 3110 | static void sModemReset(CONTROLLER_T * CtlP, int chan, int on) |
1da177e4 LT |
3111 | { |
3112 | ByteIO_t addr; | |
3113 | Byte_t val; | |
3114 | ||
3115 | addr = CtlP->AiopIO[0] + 0x400; | |
3116 | val = sInB(CtlP->MReg3IO); | |
3117 | /* if AIOP[1] is not enabled, enable it */ | |
3118 | if ((val & 2) == 0) { | |
3119 | val = sInB(CtlP->MReg2IO); | |
3120 | sOutB(CtlP->MReg2IO, (val & 0xfc) | (1 & 0x03)); | |
3121 | sOutB(CtlP->MBaseIO, (unsigned char) (addr >> 6)); | |
3122 | } | |
3123 | ||
3124 | sEnAiop(CtlP, 1); | |
3125 | if (!on) | |
3126 | addr += 8; | |
3127 | sOutB(addr + chan, 0); /* apply or remove reset */ | |
3128 | sDisAiop(CtlP, 1); | |
3129 | } | |
3130 | ||
3131 | /* | |
3132 | * Not an official SSCI function, but how to reset RocketModems. | |
3133 | * PCI bus version | |
3134 | */ | |
f15313bf | 3135 | static void sPCIModemReset(CONTROLLER_T * CtlP, int chan, int on) |
1da177e4 LT |
3136 | { |
3137 | ByteIO_t addr; | |
3138 | ||
3139 | addr = CtlP->AiopIO[0] + 0x40; /* 2nd AIOP */ | |
3140 | if (!on) | |
3141 | addr += 8; | |
3142 | sOutB(addr + chan, 0); /* apply or remove reset */ | |
3143 | } | |
3144 | ||
3145 | /* Resets the speaker controller on RocketModem II and III devices */ | |
3146 | static void rmSpeakerReset(CONTROLLER_T * CtlP, unsigned long model) | |
3147 | { | |
3148 | ByteIO_t addr; | |
3149 | ||
3150 | /* RocketModem II speaker control is at the 8th port location of offset 0x40 */ | |
3151 | if ((model == MODEL_RP4M) || (model == MODEL_RP6M)) { | |
3152 | addr = CtlP->AiopIO[0] + 0x4F; | |
3153 | sOutB(addr, 0); | |
3154 | } | |
3155 | ||
3156 | /* RocketModem III speaker control is at the 1st port location of offset 0x80 */ | |
3157 | if ((model == MODEL_UPCI_RM3_8PORT) | |
3158 | || (model == MODEL_UPCI_RM3_4PORT)) { | |
3159 | addr = CtlP->AiopIO[0] + 0x88; | |
3160 | sOutB(addr, 0); | |
3161 | } | |
3162 | } | |
3163 | ||
3164 | /* Returns the line number given the controller (board), aiop and channel number */ | |
3165 | static unsigned char GetLineNumber(int ctrl, int aiop, int ch) | |
3166 | { | |
3167 | return lineNumbers[(ctrl << 5) | (aiop << 3) | ch]; | |
3168 | } | |
3169 | ||
3170 | /* | |
3171 | * Stores the line number associated with a given controller (board), aiop | |
3172 | * and channel number. | |
3173 | * Returns: The line number assigned | |
3174 | */ | |
3175 | static unsigned char SetLineNumber(int ctrl, int aiop, int ch) | |
3176 | { | |
3177 | lineNumbers[(ctrl << 5) | (aiop << 3) | ch] = nextLineNumber++; | |
3178 | return (nextLineNumber - 1); | |
3179 | } |