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1da177e4 LT |
1 | |
2 | /* rio_linux.c -- Linux driver for the Specialix RIO series cards. | |
3 | * | |
4 | * | |
5 | * (C) 1999 R.E.Wolff@BitWizard.nl | |
6 | * | |
7 | * Specialix pays for the development and support of this driver. | |
8 | * Please DO contact support@specialix.co.uk if you require | |
9 | * support. But please read the documentation (rio.txt) first. | |
10 | * | |
11 | * | |
12 | * | |
13 | * This program is free software; you can redistribute it and/or | |
14 | * modify it under the terms of the GNU General Public License as | |
15 | * published by the Free Software Foundation; either version 2 of | |
16 | * the License, or (at your option) any later version. | |
17 | * | |
18 | * This program is distributed in the hope that it will be | |
19 | * useful, but WITHOUT ANY WARRANTY; without even the implied | |
20 | * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR | |
21 | * PURPOSE. See the GNU General Public License for more details. | |
22 | * | |
23 | * You should have received a copy of the GNU General Public | |
24 | * License along with this program; if not, write to the Free | |
25 | * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, | |
26 | * USA. | |
27 | * | |
1da177e4 LT |
28 | * */ |
29 | ||
30 | #include <linux/module.h> | |
1da177e4 LT |
31 | #include <linux/kdev_t.h> |
32 | #include <asm/io.h> | |
33 | #include <linux/kernel.h> | |
34 | #include <linux/sched.h> | |
35 | #include <linux/ioport.h> | |
36 | #include <linux/interrupt.h> | |
37 | #include <linux/errno.h> | |
38 | #include <linux/tty.h> | |
39 | #include <linux/tty_flip.h> | |
40 | #include <linux/mm.h> | |
41 | #include <linux/serial.h> | |
42 | #include <linux/fcntl.h> | |
43 | #include <linux/major.h> | |
44 | #include <linux/delay.h> | |
45 | #include <linux/pci.h> | |
46 | #include <linux/slab.h> | |
405f5571 | 47 | #include <linux/smp_lock.h> |
1da177e4 LT |
48 | #include <linux/miscdevice.h> |
49 | #include <linux/init.h> | |
50 | ||
51 | #include <linux/generic_serial.h> | |
52 | #include <asm/uaccess.h> | |
53 | ||
1da177e4 | 54 | #include "linux_compat.h" |
1da177e4 LT |
55 | #include "pkt.h" |
56 | #include "daemon.h" | |
57 | #include "rio.h" | |
58 | #include "riospace.h" | |
1da177e4 LT |
59 | #include "cmdpkt.h" |
60 | #include "map.h" | |
1da177e4 LT |
61 | #include "rup.h" |
62 | #include "port.h" | |
63 | #include "riodrvr.h" | |
64 | #include "rioinfo.h" | |
65 | #include "func.h" | |
66 | #include "errors.h" | |
67 | #include "pci.h" | |
68 | ||
69 | #include "parmmap.h" | |
70 | #include "unixrup.h" | |
71 | #include "board.h" | |
72 | #include "host.h" | |
1da177e4 LT |
73 | #include "phb.h" |
74 | #include "link.h" | |
75 | #include "cmdblk.h" | |
76 | #include "route.h" | |
1da177e4 LT |
77 | #include "cirrus.h" |
78 | #include "rioioctl.h" | |
79 | #include "param.h" | |
1da177e4 LT |
80 | #include "protsts.h" |
81 | #include "rioboard.h" | |
82 | ||
83 | ||
84 | #include "rio_linux.h" | |
85 | ||
86 | /* I don't think that this driver can handle more than 512 ports on | |
87 | one machine. Specialix specifies max 4 boards in one machine. I don't | |
88 | know why. If you want to try anyway you'll have to increase the number | |
89 | of boards in rio.h. You'll have to allocate more majors if you need | |
90 | more than 512 ports.... */ | |
91 | ||
92 | #ifndef RIO_NORMAL_MAJOR0 | |
93 | /* This allows overriding on the compiler commandline, or in a "major.h" | |
94 | include or something like that */ | |
95 | #define RIO_NORMAL_MAJOR0 154 | |
96 | #define RIO_NORMAL_MAJOR1 156 | |
97 | #endif | |
98 | ||
99 | #ifndef PCI_DEVICE_ID_SPECIALIX_SX_XIO_IO8 | |
100 | #define PCI_DEVICE_ID_SPECIALIX_SX_XIO_IO8 0x2000 | |
101 | #endif | |
102 | ||
8d8706e2 | 103 | #ifndef RIO_WINDOW_LEN |
1da177e4 LT |
104 | #define RIO_WINDOW_LEN 0x10000 |
105 | #endif | |
106 | ||
107 | ||
108 | /* Configurable options: | |
109 | (Don't be too sure that it'll work if you toggle them) */ | |
110 | ||
111 | /* Am I paranoid or not ? ;-) */ | |
112 | #undef RIO_PARANOIA_CHECK | |
113 | ||
114 | ||
115 | /* 20 -> 2000 per second. The card should rate-limit interrupts at 1000 | |
116 | Hz, but it is user configurable. I don't recommend going above 1000 | |
117 | Hz. The interrupt ratelimit might trigger if the interrupt is | |
118 | shared with a very active other device. | |
119 | undef this if you want to disable the check.... | |
120 | */ | |
121 | #define IRQ_RATE_LIMIT 200 | |
122 | ||
1da177e4 LT |
123 | |
124 | /* These constants are derived from SCO Source */ | |
125 | static struct Conf | |
8d8706e2 AM |
126 | RIOConf = { |
127 | /* locator */ "RIO Config here", | |
128 | /* startuptime */ HZ * 2, | |
129 | /* how long to wait for card to run */ | |
130 | /* slowcook */ 0, | |
131 | /* TRUE -> always use line disc. */ | |
132 | /* intrpolltime */ 1, | |
133 | /* The frequency of OUR polls */ | |
134 | /* breakinterval */ 25, | |
135 | /* x10 mS XXX: units seem to be 1ms not 10! -- REW */ | |
136 | /* timer */ 10, | |
137 | /* mS */ | |
138 | /* RtaLoadBase */ 0x7000, | |
139 | /* HostLoadBase */ 0x7C00, | |
140 | /* XpHz */ 5, | |
141 | /* number of Xprint hits per second */ | |
142 | /* XpCps */ 120, | |
143 | /* Xprint characters per second */ | |
144 | /* XpOn */ "\033d#", | |
145 | /* start Xprint for a wyse 60 */ | |
146 | /* XpOff */ "\024", | |
147 | /* end Xprint for a wyse 60 */ | |
148 | /* MaxXpCps */ 2000, | |
149 | /* highest Xprint speed */ | |
150 | /* MinXpCps */ 10, | |
151 | /* slowest Xprint speed */ | |
152 | /* SpinCmds */ 1, | |
153 | /* non-zero for mega fast boots */ | |
154 | /* First Addr */ 0x0A0000, | |
155 | /* First address to look at */ | |
156 | /* Last Addr */ 0xFF0000, | |
157 | /* Last address looked at */ | |
158 | /* BufferSize */ 1024, | |
159 | /* Bytes per port of buffering */ | |
160 | /* LowWater */ 256, | |
161 | /* how much data left before wakeup */ | |
162 | /* LineLength */ 80, | |
163 | /* how wide is the console? */ | |
164 | /* CmdTimeout */ HZ, | |
165 | /* how long a close command may take */ | |
1da177e4 LT |
166 | }; |
167 | ||
168 | ||
169 | ||
170 | ||
171 | /* Function prototypes */ | |
172 | ||
8d8706e2 AM |
173 | static void rio_disable_tx_interrupts(void *ptr); |
174 | static void rio_enable_tx_interrupts(void *ptr); | |
175 | static void rio_disable_rx_interrupts(void *ptr); | |
176 | static void rio_enable_rx_interrupts(void *ptr); | |
31f35939 | 177 | static int rio_carrier_raised(struct tty_port *port); |
8d8706e2 AM |
178 | static void rio_shutdown_port(void *ptr); |
179 | static int rio_set_real_termios(void *ptr); | |
180 | static void rio_hungup(void *ptr); | |
181 | static void rio_close(void *ptr); | |
182 | static int rio_chars_in_buffer(void *ptr); | |
f6759fdc | 183 | static long rio_fw_ioctl(struct file *filp, unsigned int cmd, unsigned long arg); |
1da177e4 LT |
184 | static int rio_init_drivers(void); |
185 | ||
8d8706e2 | 186 | static void my_hd(void *addr, int len); |
1da177e4 LT |
187 | |
188 | static struct tty_driver *rio_driver, *rio_driver2; | |
189 | ||
190 | /* The name "p" is a bit non-descript. But that's what the rio-lynxos | |
191 | sources use all over the place. */ | |
192 | struct rio_info *p; | |
193 | ||
194 | int rio_debug; | |
195 | ||
196 | ||
197 | /* You can have the driver poll your card. | |
198 | - Set rio_poll to 1 to poll every timer tick (10ms on Intel). | |
199 | This is used when the card cannot use an interrupt for some reason. | |
200 | */ | |
201 | static int rio_poll = 1; | |
202 | ||
203 | ||
204 | /* These are the only open spaces in my computer. Yours may have more | |
205 | or less.... */ | |
8d8706e2 | 206 | static int rio_probe_addrs[] = { 0xc0000, 0xd0000, 0xe0000 }; |
1da177e4 | 207 | |
fe971071 | 208 | #define NR_RIO_ADDRS ARRAY_SIZE(rio_probe_addrs) |
1da177e4 LT |
209 | |
210 | ||
211 | /* Set the mask to all-ones. This alas, only supports 32 interrupts. | |
212 | Some architectures may need more. -- Changed to LONG to | |
213 | support up to 64 bits on 64bit architectures. -- REW 20/06/99 */ | |
408b664a | 214 | static long rio_irqmask = -1; |
1da177e4 LT |
215 | |
216 | MODULE_AUTHOR("Rogier Wolff <R.E.Wolff@bitwizard.nl>, Patrick van de Lageweg <patrick@bitwizard.nl>"); | |
217 | MODULE_DESCRIPTION("RIO driver"); | |
218 | MODULE_LICENSE("GPL"); | |
219 | module_param(rio_poll, int, 0); | |
220 | module_param(rio_debug, int, 0644); | |
221 | module_param(rio_irqmask, long, 0); | |
222 | ||
223 | static struct real_driver rio_real_driver = { | |
8d8706e2 AM |
224 | rio_disable_tx_interrupts, |
225 | rio_enable_tx_interrupts, | |
226 | rio_disable_rx_interrupts, | |
227 | rio_enable_rx_interrupts, | |
8d8706e2 AM |
228 | rio_shutdown_port, |
229 | rio_set_real_termios, | |
230 | rio_chars_in_buffer, | |
231 | rio_close, | |
232 | rio_hungup, | |
233 | NULL | |
1da177e4 LT |
234 | }; |
235 | ||
236 | /* | |
237 | * Firmware loader driver specific routines | |
238 | * | |
239 | */ | |
240 | ||
62322d25 | 241 | static const struct file_operations rio_fw_fops = { |
8d8706e2 | 242 | .owner = THIS_MODULE, |
f6759fdc | 243 | .unlocked_ioctl = rio_fw_ioctl, |
6038f373 | 244 | .llseek = noop_llseek, |
1da177e4 LT |
245 | }; |
246 | ||
247 | static struct miscdevice rio_fw_device = { | |
248 | RIOCTL_MISC_MINOR, "rioctl", &rio_fw_fops | |
249 | }; | |
250 | ||
251 | ||
252 | ||
253 | ||
254 | ||
255 | #ifdef RIO_PARANOIA_CHECK | |
256 | ||
257 | /* This doesn't work. Who's paranoid around here? Not me! */ | |
258 | ||
8d8706e2 | 259 | static inline int rio_paranoia_check(struct rio_port const *port, char *name, const char *routine) |
1da177e4 LT |
260 | { |
261 | ||
8d8706e2 AM |
262 | static const char *badmagic = KERN_ERR "rio: Warning: bad rio port magic number for device %s in %s\n"; |
263 | static const char *badinfo = KERN_ERR "rio: Warning: null rio port for device %s in %s\n"; | |
264 | ||
265 | if (!port) { | |
266 | printk(badinfo, name, routine); | |
267 | return 1; | |
268 | } | |
269 | if (port->magic != RIO_MAGIC) { | |
270 | printk(badmagic, name, routine); | |
271 | return 1; | |
272 | } | |
273 | ||
274 | return 0; | |
1da177e4 LT |
275 | } |
276 | #else | |
277 | #define rio_paranoia_check(a,b,c) 0 | |
278 | #endif | |
279 | ||
280 | ||
281 | #ifdef DEBUG | |
8d8706e2 | 282 | static void my_hd(void *ad, int len) |
1da177e4 | 283 | { |
8d8706e2 AM |
284 | int i, j, ch; |
285 | unsigned char *addr = ad; | |
286 | ||
287 | for (i = 0; i < len; i += 16) { | |
00d83a54 | 288 | rio_dprintk(RIO_DEBUG_PARAM, "%08lx ", (unsigned long) addr + i); |
8d8706e2 AM |
289 | for (j = 0; j < 16; j++) { |
290 | rio_dprintk(RIO_DEBUG_PARAM, "%02x %s", addr[j + i], (j == 7) ? " " : ""); | |
291 | } | |
292 | for (j = 0; j < 16; j++) { | |
293 | ch = addr[j + i]; | |
294 | rio_dprintk(RIO_DEBUG_PARAM, "%c", (ch < 0x20) ? '.' : ((ch > 0x7f) ? '.' : ch)); | |
295 | } | |
296 | rio_dprintk(RIO_DEBUG_PARAM, "\n"); | |
297 | } | |
1da177e4 LT |
298 | } |
299 | #else | |
300 | #define my_hd(ad,len) do{/* nothing*/ } while (0) | |
301 | #endif | |
302 | ||
303 | ||
8d8706e2 AM |
304 | /* Delay a number of jiffies, allowing a signal to interrupt */ |
305 | int RIODelay(struct Port *PortP, int njiffies) | |
1da177e4 | 306 | { |
8d8706e2 | 307 | func_enter(); |
1da177e4 | 308 | |
8d8706e2 AM |
309 | rio_dprintk(RIO_DEBUG_DELAY, "delaying %d jiffies\n", njiffies); |
310 | msleep_interruptible(jiffies_to_msecs(njiffies)); | |
311 | func_exit(); | |
1da177e4 | 312 | |
8d8706e2 AM |
313 | if (signal_pending(current)) |
314 | return RIO_FAIL; | |
315 | else | |
316 | return !RIO_FAIL; | |
1da177e4 LT |
317 | } |
318 | ||
319 | ||
8d8706e2 AM |
320 | /* Delay a number of jiffies, disallowing a signal to interrupt */ |
321 | int RIODelay_ni(struct Port *PortP, int njiffies) | |
1da177e4 | 322 | { |
8d8706e2 | 323 | func_enter(); |
1da177e4 | 324 | |
8d8706e2 AM |
325 | rio_dprintk(RIO_DEBUG_DELAY, "delaying %d jiffies (ni)\n", njiffies); |
326 | msleep(jiffies_to_msecs(njiffies)); | |
327 | func_exit(); | |
328 | return !RIO_FAIL; | |
1da177e4 LT |
329 | } |
330 | ||
38d0d001 | 331 | void rio_copy_to_card(void *from, void __iomem *to, int len) |
00d83a54 | 332 | { |
ae5b28a5 | 333 | rio_copy_toio(to, from, len); |
00d83a54 | 334 | } |
1da177e4 LT |
335 | |
336 | int rio_minor(struct tty_struct *tty) | |
337 | { | |
1f85449f | 338 | return tty->index + ((tty->driver == rio_driver) ? 0 : 256); |
1da177e4 LT |
339 | } |
340 | ||
8d8706e2 | 341 | static int rio_set_real_termios(void *ptr) |
1da177e4 | 342 | { |
d6f6341a | 343 | return RIOParam((struct Port *) ptr, RIOC_CONFIG, 1, 1); |
1da177e4 LT |
344 | } |
345 | ||
346 | ||
8d8706e2 | 347 | static void rio_reset_interrupt(struct Host *HostP) |
1da177e4 | 348 | { |
8d8706e2 | 349 | func_enter(); |
1da177e4 | 350 | |
8d8706e2 AM |
351 | switch (HostP->Type) { |
352 | case RIO_AT: | |
353 | case RIO_MCA: | |
354 | case RIO_PCI: | |
00d83a54 | 355 | writeb(0xFF, &HostP->ResetInt); |
8d8706e2 | 356 | } |
1da177e4 | 357 | |
8d8706e2 | 358 | func_exit(); |
1da177e4 LT |
359 | } |
360 | ||
361 | ||
7d12e780 | 362 | static irqreturn_t rio_interrupt(int irq, void *ptr) |
1da177e4 | 363 | { |
8d8706e2 AM |
364 | struct Host *HostP; |
365 | func_enter(); | |
1da177e4 | 366 | |
c7bec5ab | 367 | HostP = ptr; /* &p->RIOHosts[(long)ptr]; */ |
8d8706e2 | 368 | rio_dprintk(RIO_DEBUG_IFLOW, "rio: enter rio_interrupt (%d/%d)\n", irq, HostP->Ivec); |
1da177e4 | 369 | |
8d8706e2 AM |
370 | /* AAargh! The order in which to do these things is essential and |
371 | not trivial. | |
1da177e4 | 372 | |
8d8706e2 AM |
373 | - hardware twiddling goes before "recursive". Otherwise when we |
374 | poll the card, and a recursive interrupt happens, we won't | |
375 | ack the card, so it might keep on interrupting us. (especially | |
376 | level sensitive interrupt systems like PCI). | |
1da177e4 | 377 | |
8d8706e2 AM |
378 | - Rate limit goes before hardware twiddling. Otherwise we won't |
379 | catch a card that has gone bonkers. | |
1da177e4 | 380 | |
8d8706e2 AM |
381 | - The "initialized" test goes after the hardware twiddling. Otherwise |
382 | the card will stick us in the interrupt routine again. | |
383 | ||
384 | - The initialized test goes before recursive. | |
385 | */ | |
1da177e4 | 386 | |
8d8706e2 AM |
387 | rio_dprintk(RIO_DEBUG_IFLOW, "rio: We've have noticed the interrupt\n"); |
388 | if (HostP->Ivec == irq) { | |
389 | /* Tell the card we've noticed the interrupt. */ | |
390 | rio_reset_interrupt(HostP); | |
391 | } | |
392 | ||
393 | if ((HostP->Flags & RUN_STATE) != RC_RUNNING) | |
394 | return IRQ_HANDLED; | |
395 | ||
396 | if (test_and_set_bit(RIO_BOARD_INTR_LOCK, &HostP->locks)) { | |
00d83a54 | 397 | printk(KERN_ERR "Recursive interrupt! (host %p/irq%d)\n", ptr, HostP->Ivec); |
8d8706e2 AM |
398 | return IRQ_HANDLED; |
399 | } | |
400 | ||
c7bec5ab | 401 | RIOServiceHost(p, HostP); |
8d8706e2 | 402 | |
00d83a54 | 403 | rio_dprintk(RIO_DEBUG_IFLOW, "riointr() doing host %p type %d\n", ptr, HostP->Type); |
8d8706e2 AM |
404 | |
405 | clear_bit(RIO_BOARD_INTR_LOCK, &HostP->locks); | |
406 | rio_dprintk(RIO_DEBUG_IFLOW, "rio: exit rio_interrupt (%d/%d)\n", irq, HostP->Ivec); | |
407 | func_exit(); | |
408 | return IRQ_HANDLED; | |
1da177e4 LT |
409 | } |
410 | ||
411 | ||
8d8706e2 | 412 | static void rio_pollfunc(unsigned long data) |
1da177e4 | 413 | { |
8d8706e2 | 414 | func_enter(); |
1da177e4 | 415 | |
7d12e780 | 416 | rio_interrupt(0, &p->RIOHosts[data]); |
40565f19 | 417 | mod_timer(&p->RIOHosts[data].timer, jiffies + rio_poll); |
1da177e4 | 418 | |
8d8706e2 | 419 | func_exit(); |
1da177e4 LT |
420 | } |
421 | ||
422 | ||
423 | /* ********************************************************************** * | |
424 | * Here are the routines that actually * | |
425 | * interface with the generic_serial driver * | |
426 | * ********************************************************************** */ | |
427 | ||
428 | /* Ehhm. I don't know how to fiddle with interrupts on the Specialix | |
429 | cards. .... Hmm. Ok I figured it out. You don't. -- REW */ | |
430 | ||
8d8706e2 | 431 | static void rio_disable_tx_interrupts(void *ptr) |
1da177e4 | 432 | { |
8d8706e2 | 433 | func_enter(); |
1da177e4 | 434 | |
b5391e29 | 435 | /* port->gs.port.flags &= ~GS_TX_INTEN; */ |
1da177e4 | 436 | |
8d8706e2 | 437 | func_exit(); |
1da177e4 LT |
438 | } |
439 | ||
440 | ||
8d8706e2 | 441 | static void rio_enable_tx_interrupts(void *ptr) |
1da177e4 | 442 | { |
8d8706e2 AM |
443 | struct Port *PortP = ptr; |
444 | /* int hn; */ | |
1da177e4 | 445 | |
8d8706e2 | 446 | func_enter(); |
1da177e4 | 447 | |
8d8706e2 | 448 | /* hn = PortP->HostP - p->RIOHosts; |
1da177e4 | 449 | |
8d8706e2 AM |
450 | rio_dprintk (RIO_DEBUG_TTY, "Pushing host %d\n", hn); |
451 | rio_interrupt (-1,(void *) hn, NULL); */ | |
1da177e4 | 452 | |
8d8706e2 | 453 | RIOTxEnable((char *) PortP); |
1da177e4 | 454 | |
8d8706e2 AM |
455 | /* |
456 | * In general we cannot count on "tx empty" interrupts, although | |
457 | * the interrupt routine seems to be able to tell the difference. | |
458 | */ | |
b5391e29 | 459 | PortP->gs.port.flags &= ~GS_TX_INTEN; |
1da177e4 | 460 | |
8d8706e2 | 461 | func_exit(); |
1da177e4 LT |
462 | } |
463 | ||
464 | ||
8d8706e2 | 465 | static void rio_disable_rx_interrupts(void *ptr) |
1da177e4 | 466 | { |
8d8706e2 AM |
467 | func_enter(); |
468 | func_exit(); | |
1da177e4 LT |
469 | } |
470 | ||
8d8706e2 | 471 | static void rio_enable_rx_interrupts(void *ptr) |
1da177e4 | 472 | { |
8d8706e2 AM |
473 | /* struct rio_port *port = ptr; */ |
474 | func_enter(); | |
475 | func_exit(); | |
1da177e4 LT |
476 | } |
477 | ||
478 | ||
479 | /* Jeez. Isn't this simple? */ | |
31f35939 | 480 | static int rio_carrier_raised(struct tty_port *port) |
1da177e4 | 481 | { |
31f35939 | 482 | struct Port *PortP = container_of(port, struct Port, gs.port); |
8d8706e2 AM |
483 | int rv; |
484 | ||
485 | func_enter(); | |
d6f6341a | 486 | rv = (PortP->ModemState & RIOC_MSVR1_CD) != 0; |
1da177e4 | 487 | |
8d8706e2 | 488 | rio_dprintk(RIO_DEBUG_INIT, "Getting CD status: %d\n", rv); |
1da177e4 | 489 | |
8d8706e2 AM |
490 | func_exit(); |
491 | return rv; | |
1da177e4 LT |
492 | } |
493 | ||
494 | ||
495 | /* Jeez. Isn't this simple? Actually, we can sync with the actual port | |
496 | by just pushing stuff into the queue going to the port... */ | |
8d8706e2 | 497 | static int rio_chars_in_buffer(void *ptr) |
1da177e4 | 498 | { |
8d8706e2 | 499 | func_enter(); |
1da177e4 | 500 | |
8d8706e2 AM |
501 | func_exit(); |
502 | return 0; | |
1da177e4 LT |
503 | } |
504 | ||
505 | ||
506 | /* Nothing special here... */ | |
8d8706e2 | 507 | static void rio_shutdown_port(void *ptr) |
1da177e4 | 508 | { |
8d8706e2 | 509 | struct Port *PortP; |
1da177e4 | 510 | |
8d8706e2 | 511 | func_enter(); |
1da177e4 | 512 | |
8d8706e2 | 513 | PortP = (struct Port *) ptr; |
b5391e29 | 514 | PortP->gs.port.tty = NULL; |
8d8706e2 | 515 | func_exit(); |
1da177e4 LT |
516 | } |
517 | ||
518 | ||
519 | /* I haven't the foggiest why the decrement use count has to happen | |
520 | here. The whole linux serial drivers stuff needs to be redesigned. | |
521 | My guess is that this is a hack to minimize the impact of a bug | |
522 | elsewhere. Thinking about it some more. (try it sometime) Try | |
523 | running minicom on a serial port that is driven by a modularized | |
524 | driver. Have the modem hangup. Then remove the driver module. Then | |
525 | exit minicom. I expect an "oops". -- REW */ | |
8d8706e2 | 526 | static void rio_hungup(void *ptr) |
1da177e4 | 527 | { |
8d8706e2 AM |
528 | struct Port *PortP; |
529 | ||
530 | func_enter(); | |
1da177e4 | 531 | |
8d8706e2 | 532 | PortP = (struct Port *) ptr; |
b5391e29 | 533 | PortP->gs.port.tty = NULL; |
1da177e4 | 534 | |
8d8706e2 | 535 | func_exit(); |
1da177e4 LT |
536 | } |
537 | ||
538 | ||
539 | /* The standard serial_close would become shorter if you'd wrap it like | |
540 | this. | |
541 | rs_close (...){save_flags;cli;real_close();dec_use_count;restore_flags;} | |
542 | */ | |
8d8706e2 | 543 | static void rio_close(void *ptr) |
1da177e4 | 544 | { |
8d8706e2 | 545 | struct Port *PortP; |
1da177e4 | 546 | |
8d8706e2 | 547 | func_enter(); |
1da177e4 | 548 | |
8d8706e2 | 549 | PortP = (struct Port *) ptr; |
1da177e4 | 550 | |
8d8706e2 | 551 | riotclose(ptr); |
1da177e4 | 552 | |
b5391e29 AC |
553 | if (PortP->gs.port.count) { |
554 | printk(KERN_ERR "WARNING port count:%d\n", PortP->gs.port.count); | |
555 | PortP->gs.port.count = 0; | |
8d8706e2 | 556 | } |
1da177e4 | 557 | |
b5391e29 | 558 | PortP->gs.port.tty = NULL; |
8d8706e2 | 559 | func_exit(); |
1da177e4 LT |
560 | } |
561 | ||
562 | ||
563 | ||
f6759fdc | 564 | static long rio_fw_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) |
1da177e4 | 565 | { |
8d8706e2 AM |
566 | int rc = 0; |
567 | func_enter(); | |
1da177e4 | 568 | |
8d8706e2 | 569 | /* The "dev" argument isn't used. */ |
f6759fdc | 570 | lock_kernel(); |
d886cb58 | 571 | rc = riocontrol(p, 0, cmd, arg, capable(CAP_SYS_ADMIN)); |
f6759fdc | 572 | unlock_kernel(); |
1da177e4 | 573 | |
8d8706e2 AM |
574 | func_exit(); |
575 | return rc; | |
1da177e4 LT |
576 | } |
577 | ||
8d8706e2 | 578 | extern int RIOShortCommand(struct rio_info *p, struct Port *PortP, int command, int len, int arg); |
1da177e4 | 579 | |
8d8706e2 | 580 | static int rio_ioctl(struct tty_struct *tty, struct file *filp, unsigned int cmd, unsigned long arg) |
1da177e4 | 581 | { |
d886cb58 | 582 | void __user *argp = (void __user *)arg; |
8d8706e2 AM |
583 | int rc; |
584 | struct Port *PortP; | |
585 | int ival; | |
1da177e4 | 586 | |
8d8706e2 | 587 | func_enter(); |
1da177e4 | 588 | |
8d8706e2 | 589 | PortP = (struct Port *) tty->driver_data; |
1da177e4 | 590 | |
8d8706e2 AM |
591 | rc = 0; |
592 | switch (cmd) { | |
8d8706e2 | 593 | case TIOCSSOFTCAR: |
d886cb58 | 594 | if ((rc = get_user(ival, (unsigned __user *) argp)) == 0) { |
8d8706e2 AM |
595 | tty->termios->c_cflag = (tty->termios->c_cflag & ~CLOCAL) | (ival ? CLOCAL : 0); |
596 | } | |
597 | break; | |
598 | case TIOCGSERIAL: | |
599 | rc = -EFAULT; | |
d886cb58 AV |
600 | if (access_ok(VERIFY_WRITE, argp, sizeof(struct serial_struct))) |
601 | rc = gs_getserial(&PortP->gs, argp); | |
8d8706e2 AM |
602 | break; |
603 | case TCSBRK: | |
604 | if (PortP->State & RIO_DELETED) { | |
605 | rio_dprintk(RIO_DEBUG_TTY, "BREAK on deleted RTA\n"); | |
606 | rc = -EIO; | |
607 | } else { | |
d6f6341a JS |
608 | if (RIOShortCommand(p, PortP, RIOC_SBREAK, 2, 250) == |
609 | RIO_FAIL) { | |
8d8706e2 AM |
610 | rio_dprintk(RIO_DEBUG_INTR, "SBREAK RIOShortCommand failed\n"); |
611 | rc = -EIO; | |
612 | } | |
613 | } | |
614 | break; | |
615 | case TCSBRKP: | |
616 | if (PortP->State & RIO_DELETED) { | |
617 | rio_dprintk(RIO_DEBUG_TTY, "BREAK on deleted RTA\n"); | |
618 | rc = -EIO; | |
619 | } else { | |
620 | int l; | |
621 | l = arg ? arg * 100 : 250; | |
622 | if (l > 255) | |
623 | l = 255; | |
d6f6341a JS |
624 | if (RIOShortCommand(p, PortP, RIOC_SBREAK, 2, |
625 | arg ? arg * 100 : 250) == RIO_FAIL) { | |
8d8706e2 AM |
626 | rio_dprintk(RIO_DEBUG_INTR, "SBREAK RIOShortCommand failed\n"); |
627 | rc = -EIO; | |
628 | } | |
629 | } | |
630 | break; | |
631 | case TIOCSSERIAL: | |
632 | rc = -EFAULT; | |
d886cb58 AV |
633 | if (access_ok(VERIFY_READ, argp, sizeof(struct serial_struct))) |
634 | rc = gs_setserial(&PortP->gs, argp); | |
8d8706e2 | 635 | break; |
8d8706e2 AM |
636 | default: |
637 | rc = -ENOIOCTLCMD; | |
638 | break; | |
639 | } | |
640 | func_exit(); | |
641 | return rc; | |
1da177e4 LT |
642 | } |
643 | ||
644 | ||
645 | /* The throttle/unthrottle scheme for the Specialix card is different | |
646 | * from other drivers and deserves some explanation. | |
647 | * The Specialix hardware takes care of XON/XOFF | |
648 | * and CTS/RTS flow control itself. This means that all we have to | |
649 | * do when signalled by the upper tty layer to throttle/unthrottle is | |
650 | * to make a note of it here. When we come to read characters from the | |
651 | * rx buffers on the card (rio_receive_chars()) we look to see if the | |
652 | * upper layer can accept more (as noted here in rio_rx_throt[]). | |
653 | * If it can't we simply don't remove chars from the cards buffer. | |
654 | * When the tty layer can accept chars, we again note that here and when | |
655 | * rio_receive_chars() is called it will remove them from the cards buffer. | |
656 | * The card will notice that a ports buffer has drained below some low | |
657 | * water mark and will unflow control the line itself, using whatever | |
658 | * flow control scheme is in use for that port. -- Simon Allen | |
659 | */ | |
660 | ||
8d8706e2 | 661 | static void rio_throttle(struct tty_struct *tty) |
1da177e4 | 662 | { |
8d8706e2 AM |
663 | struct Port *port = (struct Port *) tty->driver_data; |
664 | ||
665 | func_enter(); | |
666 | /* If the port is using any type of input flow | |
667 | * control then throttle the port. | |
668 | */ | |
669 | ||
670 | if ((tty->termios->c_cflag & CRTSCTS) || (I_IXOFF(tty))) { | |
671 | port->State |= RIO_THROTTLE_RX; | |
672 | } | |
673 | ||
674 | func_exit(); | |
1da177e4 LT |
675 | } |
676 | ||
677 | ||
8d8706e2 | 678 | static void rio_unthrottle(struct tty_struct *tty) |
1da177e4 | 679 | { |
8d8706e2 | 680 | struct Port *port = (struct Port *) tty->driver_data; |
1da177e4 | 681 | |
8d8706e2 AM |
682 | func_enter(); |
683 | /* Always unthrottle even if flow control is not enabled on | |
684 | * this port in case we disabled flow control while the port | |
685 | * was throttled | |
686 | */ | |
1da177e4 | 687 | |
8d8706e2 | 688 | port->State &= ~RIO_THROTTLE_RX; |
1da177e4 | 689 | |
8d8706e2 AM |
690 | func_exit(); |
691 | return; | |
1da177e4 LT |
692 | } |
693 | ||
694 | ||
695 | ||
696 | ||
697 | ||
698 | /* ********************************************************************** * | |
699 | * Here are the initialization routines. * | |
700 | * ********************************************************************** */ | |
701 | ||
702 | ||
8d8706e2 | 703 | static struct vpd_prom *get_VPD_PROM(struct Host *hp) |
1da177e4 | 704 | { |
8d8706e2 AM |
705 | static struct vpd_prom vpdp; |
706 | char *p; | |
707 | int i; | |
708 | ||
709 | func_enter(); | |
710 | rio_dprintk(RIO_DEBUG_PROBE, "Going to verify vpd prom at %p.\n", hp->Caddr + RIO_VPD_ROM); | |
1da177e4 | 711 | |
8d8706e2 AM |
712 | p = (char *) &vpdp; |
713 | for (i = 0; i < sizeof(struct vpd_prom); i++) | |
714 | *p++ = readb(hp->Caddr + RIO_VPD_ROM + i * 2); | |
715 | /* read_rio_byte (hp, RIO_VPD_ROM + i*2); */ | |
1da177e4 | 716 | |
8d8706e2 AM |
717 | /* Terminate the identifier string. |
718 | *** requires one extra byte in struct vpd_prom *** */ | |
719 | *p++ = 0; | |
1da177e4 | 720 | |
8d8706e2 AM |
721 | if (rio_debug & RIO_DEBUG_PROBE) |
722 | my_hd((char *) &vpdp, 0x20); | |
1da177e4 | 723 | |
8d8706e2 | 724 | func_exit(); |
1da177e4 | 725 | |
8d8706e2 | 726 | return &vpdp; |
1da177e4 LT |
727 | } |
728 | ||
b68e31d0 | 729 | static const struct tty_operations rio_ops = { |
8d8706e2 | 730 | .open = riotopen, |
1da177e4 LT |
731 | .close = gs_close, |
732 | .write = gs_write, | |
733 | .put_char = gs_put_char, | |
734 | .flush_chars = gs_flush_chars, | |
735 | .write_room = gs_write_room, | |
736 | .chars_in_buffer = gs_chars_in_buffer, | |
737 | .flush_buffer = gs_flush_buffer, | |
738 | .ioctl = rio_ioctl, | |
739 | .throttle = rio_throttle, | |
740 | .unthrottle = rio_unthrottle, | |
741 | .set_termios = gs_set_termios, | |
742 | .stop = gs_stop, | |
743 | .start = gs_start, | |
744 | .hangup = gs_hangup, | |
745 | }; | |
746 | ||
747 | static int rio_init_drivers(void) | |
748 | { | |
749 | int error = -ENOMEM; | |
750 | ||
751 | rio_driver = alloc_tty_driver(256); | |
752 | if (!rio_driver) | |
753 | goto out; | |
754 | rio_driver2 = alloc_tty_driver(256); | |
755 | if (!rio_driver2) | |
756 | goto out1; | |
757 | ||
758 | func_enter(); | |
759 | ||
760 | rio_driver->owner = THIS_MODULE; | |
761 | rio_driver->driver_name = "specialix_rio"; | |
762 | rio_driver->name = "ttySR"; | |
763 | rio_driver->major = RIO_NORMAL_MAJOR0; | |
764 | rio_driver->type = TTY_DRIVER_TYPE_SERIAL; | |
765 | rio_driver->subtype = SERIAL_TYPE_NORMAL; | |
766 | rio_driver->init_termios = tty_std_termios; | |
767 | rio_driver->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL; | |
768 | rio_driver->flags = TTY_DRIVER_REAL_RAW; | |
769 | tty_set_operations(rio_driver, &rio_ops); | |
770 | ||
771 | rio_driver2->owner = THIS_MODULE; | |
772 | rio_driver2->driver_name = "specialix_rio"; | |
773 | rio_driver2->name = "ttySR"; | |
774 | rio_driver2->major = RIO_NORMAL_MAJOR1; | |
775 | rio_driver2->type = TTY_DRIVER_TYPE_SERIAL; | |
776 | rio_driver2->subtype = SERIAL_TYPE_NORMAL; | |
777 | rio_driver2->init_termios = tty_std_termios; | |
778 | rio_driver2->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL; | |
779 | rio_driver2->flags = TTY_DRIVER_REAL_RAW; | |
780 | tty_set_operations(rio_driver2, &rio_ops); | |
781 | ||
8d8706e2 | 782 | rio_dprintk(RIO_DEBUG_INIT, "set_termios = %p\n", gs_set_termios); |
1da177e4 LT |
783 | |
784 | if ((error = tty_register_driver(rio_driver))) | |
785 | goto out2; | |
786 | if ((error = tty_register_driver(rio_driver2))) | |
787 | goto out3; | |
788 | func_exit(); | |
789 | return 0; | |
8d8706e2 | 790 | out3: |
1da177e4 | 791 | tty_unregister_driver(rio_driver); |
8d8706e2 | 792 | out2: |
1da177e4 | 793 | put_tty_driver(rio_driver2); |
8d8706e2 | 794 | out1: |
1da177e4 | 795 | put_tty_driver(rio_driver); |
8d8706e2 AM |
796 | out: |
797 | printk(KERN_ERR "rio: Couldn't register a rio driver, error = %d\n", error); | |
1da177e4 LT |
798 | return 1; |
799 | } | |
800 | ||
31f35939 AC |
801 | static const struct tty_port_operations rio_port_ops = { |
802 | .carrier_raised = rio_carrier_raised, | |
803 | }; | |
1da177e4 | 804 | |
8d8706e2 | 805 | static int rio_init_datastructures(void) |
1da177e4 | 806 | { |
8d8706e2 AM |
807 | int i; |
808 | struct Port *port; | |
809 | func_enter(); | |
810 | ||
811 | /* Many drivers statically allocate the maximum number of ports | |
812 | There is no reason not to allocate them dynamically. Is there? -- REW */ | |
813 | /* However, the RIO driver allows users to configure their first | |
814 | RTA as the ports numbered 504-511. We therefore need to allocate | |
815 | the whole range. :-( -- REW */ | |
816 | ||
1da177e4 LT |
817 | #define RI_SZ sizeof(struct rio_info) |
818 | #define HOST_SZ sizeof(struct Host) | |
819 | #define PORT_SZ sizeof(struct Port *) | |
820 | #define TMIO_SZ sizeof(struct termios *) | |
00d83a54 | 821 | rio_dprintk(RIO_DEBUG_INIT, "getting : %Zd %Zd %Zd %Zd %Zd bytes\n", RI_SZ, RIO_HOSTS * HOST_SZ, RIO_PORTS * PORT_SZ, RIO_PORTS * TMIO_SZ, RIO_PORTS * TMIO_SZ); |
8d8706e2 | 822 | |
d0c9873a | 823 | if (!(p = kzalloc(RI_SZ, GFP_KERNEL))) |
8d8706e2 | 824 | goto free0; |
d0c9873a | 825 | if (!(p->RIOHosts = kzalloc(RIO_HOSTS * HOST_SZ, GFP_KERNEL))) |
8d8706e2 | 826 | goto free1; |
d0c9873a | 827 | if (!(p->RIOPortp = kzalloc(RIO_PORTS * PORT_SZ, GFP_KERNEL))) |
8d8706e2 AM |
828 | goto free2; |
829 | p->RIOConf = RIOConf; | |
830 | rio_dprintk(RIO_DEBUG_INIT, "Got : %p %p %p\n", p, p->RIOHosts, p->RIOPortp); | |
1da177e4 LT |
831 | |
832 | #if 1 | |
8d8706e2 | 833 | for (i = 0; i < RIO_PORTS; i++) { |
d0c9873a | 834 | port = p->RIOPortp[i] = kzalloc(sizeof(struct Port), GFP_KERNEL); |
8d8706e2 AM |
835 | if (!port) { |
836 | goto free6; | |
837 | } | |
838 | rio_dprintk(RIO_DEBUG_INIT, "initing port %d (%d)\n", i, port->Mapped); | |
31f35939 AC |
839 | tty_port_init(&port->gs.port); |
840 | port->gs.port.ops = &rio_port_ops; | |
8d8706e2 AM |
841 | port->PortNum = i; |
842 | port->gs.magic = RIO_MAGIC; | |
843 | port->gs.close_delay = HZ / 2; | |
844 | port->gs.closing_wait = 30 * HZ; | |
845 | port->gs.rd = &rio_real_driver; | |
846 | spin_lock_init(&port->portSem); | |
8d8706e2 | 847 | } |
1da177e4 | 848 | #else |
8d8706e2 | 849 | /* We could postpone initializing them to when they are configured. */ |
1da177e4 LT |
850 | #endif |
851 | ||
852 | ||
1da177e4 | 853 | |
8d8706e2 AM |
854 | if (rio_debug & RIO_DEBUG_INIT) { |
855 | my_hd(&rio_real_driver, sizeof(rio_real_driver)); | |
856 | } | |
857 | ||
1da177e4 | 858 | |
8d8706e2 AM |
859 | func_exit(); |
860 | return 0; | |
861 | ||
862 | free6:for (i--; i >= 0; i--) | |
863 | kfree(p->RIOPortp[i]); | |
1da177e4 LT |
864 | /*free5: |
865 | free4: | |
8d8706e2 AM |
866 | free3:*/ kfree(p->RIOPortp); |
867 | free2:kfree(p->RIOHosts); | |
868 | free1: | |
869 | rio_dprintk(RIO_DEBUG_INIT, "Not enough memory! %p %p %p\n", p, p->RIOHosts, p->RIOPortp); | |
870 | kfree(p); | |
871 | free0: | |
872 | return -ENOMEM; | |
1da177e4 LT |
873 | } |
874 | ||
8d8706e2 | 875 | static void __exit rio_release_drivers(void) |
1da177e4 | 876 | { |
8d8706e2 AM |
877 | func_enter(); |
878 | tty_unregister_driver(rio_driver2); | |
879 | tty_unregister_driver(rio_driver); | |
880 | put_tty_driver(rio_driver2); | |
881 | put_tty_driver(rio_driver); | |
882 | func_exit(); | |
1da177e4 LT |
883 | } |
884 | ||
885 | ||
886 | #ifdef CONFIG_PCI | |
887 | /* This was written for SX, but applies to RIO too... | |
888 | (including bugs....) | |
889 | ||
890 | There is another bit besides Bit 17. Turning that bit off | |
891 | (on boards shipped with the fix in the eeprom) results in a | |
892 | hang on the next access to the card. | |
8d8706e2 | 893 | */ |
1da177e4 LT |
894 | |
895 | /******************************************************** | |
896 | * Setting bit 17 in the CNTRL register of the PLX 9050 * | |
897 | * chip forces a retry on writes while a read is pending.* | |
898 | * This is to prevent the card locking up on Intel Xeon * | |
899 | * multiprocessor systems with the NX chipset. -- NV * | |
900 | ********************************************************/ | |
901 | ||
902 | /* Newer cards are produced with this bit set from the configuration | |
903 | EEprom. As the bit is read/write for the CPU, we can fix it here, | |
904 | if we detect that it isn't set correctly. -- REW */ | |
905 | ||
8d8706e2 | 906 | static void fix_rio_pci(struct pci_dev *pdev) |
1da177e4 | 907 | { |
00d83a54 | 908 | unsigned long hwbase; |
d886cb58 | 909 | unsigned char __iomem *rebase; |
8d8706e2 | 910 | unsigned int t; |
1da177e4 LT |
911 | |
912 | #define CNTRL_REG_OFFSET 0x50 | |
913 | #define CNTRL_REG_GOODVALUE 0x18260000 | |
914 | ||
00d83a54 AC |
915 | hwbase = pci_resource_start(pdev, 0); |
916 | rebase = ioremap(hwbase, 0x80); | |
8d8706e2 AM |
917 | t = readl(rebase + CNTRL_REG_OFFSET); |
918 | if (t != CNTRL_REG_GOODVALUE) { | |
919 | printk(KERN_DEBUG "rio: performing cntrl reg fix: %08x -> %08x\n", t, CNTRL_REG_GOODVALUE); | |
920 | writel(CNTRL_REG_GOODVALUE, rebase + CNTRL_REG_OFFSET); | |
921 | } | |
00d83a54 | 922 | iounmap(rebase); |
1da177e4 LT |
923 | } |
924 | #endif | |
925 | ||
926 | ||
8d8706e2 | 927 | static int __init rio_init(void) |
1da177e4 | 928 | { |
8d8706e2 AM |
929 | int found = 0; |
930 | int i; | |
931 | struct Host *hp; | |
932 | int retval; | |
933 | struct vpd_prom *vpdp; | |
934 | int okboard; | |
1da177e4 LT |
935 | |
936 | #ifdef CONFIG_PCI | |
8d8706e2 | 937 | struct pci_dev *pdev = NULL; |
8d8706e2 | 938 | unsigned short tshort; |
1da177e4 LT |
939 | #endif |
940 | ||
8d8706e2 AM |
941 | func_enter(); |
942 | rio_dprintk(RIO_DEBUG_INIT, "Initing rio module... (rio_debug=%d)\n", rio_debug); | |
943 | ||
944 | if (abs((long) (&rio_debug) - rio_debug) < 0x10000) { | |
945 | printk(KERN_WARNING "rio: rio_debug is an address, instead of a value. " "Assuming -1. Was %x/%p.\n", rio_debug, &rio_debug); | |
946 | rio_debug = -1; | |
947 | } | |
948 | ||
949 | if (misc_register(&rio_fw_device) < 0) { | |
950 | printk(KERN_ERR "RIO: Unable to register firmware loader driver.\n"); | |
951 | return -EIO; | |
952 | } | |
953 | ||
954 | retval = rio_init_datastructures(); | |
955 | if (retval < 0) { | |
956 | misc_deregister(&rio_fw_device); | |
957 | return retval; | |
958 | } | |
1da177e4 | 959 | #ifdef CONFIG_PCI |
8d8706e2 AM |
960 | /* First look for the JET devices: */ |
961 | while ((pdev = pci_get_device(PCI_VENDOR_ID_SPECIALIX, PCI_DEVICE_ID_SPECIALIX_SX_XIO_IO8, pdev))) { | |
554b7c80 AC |
962 | u32 tint; |
963 | ||
8d8706e2 AM |
964 | if (pci_enable_device(pdev)) |
965 | continue; | |
966 | ||
967 | /* Specialix has a whole bunch of cards with | |
968 | 0x2000 as the device ID. They say its because | |
969 | the standard requires it. Stupid standard. */ | |
970 | /* It seems that reading a word doesn't work reliably on 2.0. | |
971 | Also, reading a non-aligned dword doesn't work. So we read the | |
972 | whole dword at 0x2c and extract the word at 0x2e (SUBSYSTEM_ID) | |
973 | ourselves */ | |
8d8706e2 AM |
974 | pci_read_config_dword(pdev, 0x2c, &tint); |
975 | tshort = (tint >> 16) & 0xffff; | |
976 | rio_dprintk(RIO_DEBUG_PROBE, "Got a specialix card: %x.\n", tint); | |
977 | if (tshort != 0x0100) { | |
978 | rio_dprintk(RIO_DEBUG_PROBE, "But it's not a RIO card (%d)...\n", tshort); | |
979 | continue; | |
980 | } | |
981 | rio_dprintk(RIO_DEBUG_PROBE, "cp1\n"); | |
982 | ||
8d8706e2 | 983 | hp = &p->RIOHosts[p->RIONumHosts]; |
554b7c80 | 984 | hp->PaddrP = pci_resource_start(pdev, 2); |
8d8706e2 AM |
985 | hp->Ivec = pdev->irq; |
986 | if (((1 << hp->Ivec) & rio_irqmask) == 0) | |
987 | hp->Ivec = 0; | |
988 | hp->Caddr = ioremap(p->RIOHosts[p->RIONumHosts].PaddrP, RIO_WINDOW_LEN); | |
d886cb58 | 989 | hp->CardP = (struct DpRam __iomem *) hp->Caddr; |
8d8706e2 | 990 | hp->Type = RIO_PCI; |
00d83a54 | 991 | hp->Copy = rio_copy_to_card; |
8d8706e2 AM |
992 | hp->Mode = RIO_PCI_BOOT_FROM_RAM; |
993 | spin_lock_init(&hp->HostLock); | |
994 | rio_reset_interrupt(hp); | |
995 | rio_start_card_running(hp); | |
996 | ||
997 | rio_dprintk(RIO_DEBUG_PROBE, "Going to test it (%p/%p).\n", (void *) p->RIOHosts[p->RIONumHosts].PaddrP, p->RIOHosts[p->RIONumHosts].Caddr); | |
554b7c80 | 998 | if (RIOBoardTest(p->RIOHosts[p->RIONumHosts].PaddrP, p->RIOHosts[p->RIONumHosts].Caddr, RIO_PCI, 0) == 0) { |
8d8706e2 | 999 | rio_dprintk(RIO_DEBUG_INIT, "Done RIOBoardTest\n"); |
00d83a54 | 1000 | writeb(0xFF, &p->RIOHosts[p->RIONumHosts].ResetInt); |
8d8706e2 | 1001 | p->RIOHosts[p->RIONumHosts].UniqueNum = |
00d83a54 AC |
1002 | ((readb(&p->RIOHosts[p->RIONumHosts].Unique[0]) & 0xFF) << 0) | |
1003 | ((readb(&p->RIOHosts[p->RIONumHosts].Unique[1]) & 0xFF) << 8) | ((readb(&p->RIOHosts[p->RIONumHosts].Unique[2]) & 0xFF) << 16) | ((readb(&p->RIOHosts[p->RIONumHosts].Unique[3]) & 0xFF) << 24); | |
8d8706e2 AM |
1004 | rio_dprintk(RIO_DEBUG_PROBE, "Hmm Tested ok, uniqid = %x.\n", p->RIOHosts[p->RIONumHosts].UniqueNum); |
1005 | ||
1006 | fix_rio_pci(pdev); | |
86fbf148 JS |
1007 | |
1008 | p->RIOHosts[p->RIONumHosts].pdev = pdev; | |
1009 | pci_dev_get(pdev); | |
1010 | ||
554b7c80 | 1011 | p->RIOLastPCISearch = 0; |
8d8706e2 AM |
1012 | p->RIONumHosts++; |
1013 | found++; | |
1014 | } else { | |
d886cb58 | 1015 | iounmap(p->RIOHosts[p->RIONumHosts].Caddr); |
86842654 | 1016 | p->RIOHosts[p->RIONumHosts].Caddr = NULL; |
8d8706e2 AM |
1017 | } |
1018 | } | |
1019 | ||
1020 | /* Then look for the older PCI card.... : */ | |
1021 | ||
1022 | /* These older PCI cards have problems (only byte-mode access is | |
1023 | supported), which makes them a bit awkward to support. | |
1024 | They also have problems sharing interrupts. Be careful. | |
1025 | (The driver now refuses to share interrupts for these | |
1026 | cards. This should be sufficient). | |
1027 | */ | |
1028 | ||
1029 | /* Then look for the older RIO/PCI devices: */ | |
1030 | while ((pdev = pci_get_device(PCI_VENDOR_ID_SPECIALIX, PCI_DEVICE_ID_SPECIALIX_RIO, pdev))) { | |
1031 | if (pci_enable_device(pdev)) | |
1032 | continue; | |
1da177e4 LT |
1033 | |
1034 | #ifdef CONFIG_RIO_OLDPCI | |
8d8706e2 | 1035 | hp = &p->RIOHosts[p->RIONumHosts]; |
554b7c80 | 1036 | hp->PaddrP = pci_resource_start(pdev, 0); |
8d8706e2 AM |
1037 | hp->Ivec = pdev->irq; |
1038 | if (((1 << hp->Ivec) & rio_irqmask) == 0) | |
1039 | hp->Ivec = 0; | |
1040 | hp->Ivec |= 0x8000; /* Mark as non-sharable */ | |
1041 | hp->Caddr = ioremap(p->RIOHosts[p->RIONumHosts].PaddrP, RIO_WINDOW_LEN); | |
d886cb58 | 1042 | hp->CardP = (struct DpRam __iomem *) hp->Caddr; |
8d8706e2 | 1043 | hp->Type = RIO_PCI; |
00d83a54 | 1044 | hp->Copy = rio_copy_to_card; |
8d8706e2 AM |
1045 | hp->Mode = RIO_PCI_BOOT_FROM_RAM; |
1046 | spin_lock_init(&hp->HostLock); | |
1047 | ||
1048 | rio_dprintk(RIO_DEBUG_PROBE, "Ivec: %x\n", hp->Ivec); | |
1049 | rio_dprintk(RIO_DEBUG_PROBE, "Mode: %x\n", hp->Mode); | |
1050 | ||
1051 | rio_reset_interrupt(hp); | |
1052 | rio_start_card_running(hp); | |
1053 | rio_dprintk(RIO_DEBUG_PROBE, "Going to test it (%p/%p).\n", (void *) p->RIOHosts[p->RIONumHosts].PaddrP, p->RIOHosts[p->RIONumHosts].Caddr); | |
554b7c80 | 1054 | if (RIOBoardTest(p->RIOHosts[p->RIONumHosts].PaddrP, p->RIOHosts[p->RIONumHosts].Caddr, RIO_PCI, 0) == 0) { |
00d83a54 | 1055 | writeb(0xFF, &p->RIOHosts[p->RIONumHosts].ResetInt); |
8d8706e2 | 1056 | p->RIOHosts[p->RIONumHosts].UniqueNum = |
00d83a54 AC |
1057 | ((readb(&p->RIOHosts[p->RIONumHosts].Unique[0]) & 0xFF) << 0) | |
1058 | ((readb(&p->RIOHosts[p->RIONumHosts].Unique[1]) & 0xFF) << 8) | ((readb(&p->RIOHosts[p->RIONumHosts].Unique[2]) & 0xFF) << 16) | ((readb(&p->RIOHosts[p->RIONumHosts].Unique[3]) & 0xFF) << 24); | |
8d8706e2 AM |
1059 | rio_dprintk(RIO_DEBUG_PROBE, "Hmm Tested ok, uniqid = %x.\n", p->RIOHosts[p->RIONumHosts].UniqueNum); |
1060 | ||
86fbf148 JS |
1061 | p->RIOHosts[p->RIONumHosts].pdev = pdev; |
1062 | pci_dev_get(pdev); | |
1063 | ||
554b7c80 | 1064 | p->RIOLastPCISearch = 0; |
8d8706e2 AM |
1065 | p->RIONumHosts++; |
1066 | found++; | |
1067 | } else { | |
d886cb58 | 1068 | iounmap(p->RIOHosts[p->RIONumHosts].Caddr); |
86842654 | 1069 | p->RIOHosts[p->RIONumHosts].Caddr = NULL; |
8d8706e2 | 1070 | } |
1da177e4 | 1071 | #else |
8d8706e2 | 1072 | printk(KERN_ERR "Found an older RIO PCI card, but the driver is not " "compiled to support it.\n"); |
1da177e4 | 1073 | #endif |
8d8706e2 AM |
1074 | } |
1075 | #endif /* PCI */ | |
1076 | ||
1077 | /* Now probe for ISA cards... */ | |
1078 | for (i = 0; i < NR_RIO_ADDRS; i++) { | |
1079 | hp = &p->RIOHosts[p->RIONumHosts]; | |
1080 | hp->PaddrP = rio_probe_addrs[i]; | |
1081 | /* There was something about the IRQs of these cards. 'Forget what.--REW */ | |
1082 | hp->Ivec = 0; | |
1083 | hp->Caddr = ioremap(p->RIOHosts[p->RIONumHosts].PaddrP, RIO_WINDOW_LEN); | |
d886cb58 | 1084 | hp->CardP = (struct DpRam __iomem *) hp->Caddr; |
8d8706e2 | 1085 | hp->Type = RIO_AT; |
00d83a54 AC |
1086 | hp->Copy = rio_copy_to_card; /* AT card PCI???? - PVDL |
1087 | * -- YES! this is now a normal copy. Only the | |
8d8706e2 AM |
1088 | * old PCI card uses the special PCI copy. |
1089 | * Moreover, the ISA card will work with the | |
1090 | * special PCI copy anyway. -- REW */ | |
1091 | hp->Mode = 0; | |
1092 | spin_lock_init(&hp->HostLock); | |
1093 | ||
1094 | vpdp = get_VPD_PROM(hp); | |
1095 | rio_dprintk(RIO_DEBUG_PROBE, "Got VPD ROM\n"); | |
1096 | okboard = 0; | |
1097 | if ((strncmp(vpdp->identifier, RIO_ISA_IDENT, 16) == 0) || (strncmp(vpdp->identifier, RIO_ISA2_IDENT, 16) == 0) || (strncmp(vpdp->identifier, RIO_ISA3_IDENT, 16) == 0)) { | |
1098 | /* Board is present... */ | |
554b7c80 | 1099 | if (RIOBoardTest(hp->PaddrP, hp->Caddr, RIO_AT, 0) == 0) { |
8d8706e2 AM |
1100 | /* ... and feeling fine!!!! */ |
1101 | rio_dprintk(RIO_DEBUG_PROBE, "Hmm Tested ok, uniqid = %x.\n", p->RIOHosts[p->RIONumHosts].UniqueNum); | |
1102 | if (RIOAssignAT(p, hp->PaddrP, hp->Caddr, 0)) { | |
1103 | rio_dprintk(RIO_DEBUG_PROBE, "Hmm Tested ok, host%d uniqid = %x.\n", p->RIONumHosts, p->RIOHosts[p->RIONumHosts - 1].UniqueNum); | |
1104 | okboard++; | |
1105 | found++; | |
1106 | } | |
1107 | } | |
1108 | ||
86842654 | 1109 | if (!okboard) { |
d886cb58 | 1110 | iounmap(hp->Caddr); |
86842654 AL |
1111 | hp->Caddr = NULL; |
1112 | } | |
8d8706e2 AM |
1113 | } |
1114 | } | |
1115 | ||
1116 | ||
1117 | for (i = 0; i < p->RIONumHosts; i++) { | |
1118 | hp = &p->RIOHosts[i]; | |
1119 | if (hp->Ivec) { | |
5d8c8a2e | 1120 | int mode = IRQF_SHARED; |
8d8706e2 AM |
1121 | if (hp->Ivec & 0x8000) { |
1122 | mode = 0; | |
1123 | hp->Ivec &= 0x7fff; | |
1124 | } | |
1125 | rio_dprintk(RIO_DEBUG_INIT, "Requesting interrupt hp: %p rio_interrupt: %d Mode: %x\n", hp, hp->Ivec, hp->Mode); | |
1126 | retval = request_irq(hp->Ivec, rio_interrupt, mode, "rio", hp); | |
1127 | rio_dprintk(RIO_DEBUG_INIT, "Return value from request_irq: %d\n", retval); | |
1128 | if (retval) { | |
1129 | printk(KERN_ERR "rio: Cannot allocate irq %d.\n", hp->Ivec); | |
1130 | hp->Ivec = 0; | |
1131 | } | |
1132 | rio_dprintk(RIO_DEBUG_INIT, "Got irq %d.\n", hp->Ivec); | |
1133 | if (hp->Ivec != 0) { | |
1134 | rio_dprintk(RIO_DEBUG_INIT, "Enabling interrupts on rio card.\n"); | |
1135 | hp->Mode |= RIO_PCI_INT_ENABLE; | |
1136 | } else | |
88dacbe9 | 1137 | hp->Mode &= ~RIO_PCI_INT_ENABLE; |
8d8706e2 AM |
1138 | rio_dprintk(RIO_DEBUG_INIT, "New Mode: %x\n", hp->Mode); |
1139 | rio_start_card_running(hp); | |
1140 | } | |
1141 | /* Init the timer "always" to make sure that it can safely be | |
1142 | deleted when we unload... */ | |
1143 | ||
40565f19 | 1144 | setup_timer(&hp->timer, rio_pollfunc, i); |
8d8706e2 AM |
1145 | if (!hp->Ivec) { |
1146 | rio_dprintk(RIO_DEBUG_INIT, "Starting polling at %dj intervals.\n", rio_poll); | |
40565f19 | 1147 | mod_timer(&hp->timer, jiffies + rio_poll); |
8d8706e2 AM |
1148 | } |
1149 | } | |
1150 | ||
1151 | if (found) { | |
1152 | rio_dprintk(RIO_DEBUG_INIT, "rio: total of %d boards detected.\n", found); | |
1153 | rio_init_drivers(); | |
1154 | } else { | |
1155 | /* deregister the misc device we created earlier */ | |
1156 | misc_deregister(&rio_fw_device); | |
1157 | } | |
1158 | ||
1159 | func_exit(); | |
1160 | return found ? 0 : -EIO; | |
1da177e4 LT |
1161 | } |
1162 | ||
1163 | ||
8d8706e2 | 1164 | static void __exit rio_exit(void) |
1da177e4 | 1165 | { |
8d8706e2 AM |
1166 | int i; |
1167 | struct Host *hp; | |
1168 | ||
1169 | func_enter(); | |
1da177e4 | 1170 | |
8d8706e2 AM |
1171 | for (i = 0, hp = p->RIOHosts; i < p->RIONumHosts; i++, hp++) { |
1172 | RIOHostReset(hp->Type, hp->CardP, hp->Slot); | |
1173 | if (hp->Ivec) { | |
1174 | free_irq(hp->Ivec, hp); | |
1175 | rio_dprintk(RIO_DEBUG_INIT, "freed irq %d.\n", hp->Ivec); | |
1176 | } | |
1177 | /* It is safe/allowed to del_timer a non-active timer */ | |
40565f19 | 1178 | del_timer_sync(&hp->timer); |
86842654 AL |
1179 | if (hp->Caddr) |
1180 | iounmap(hp->Caddr); | |
86fbf148 JS |
1181 | if (hp->Type == RIO_PCI) |
1182 | pci_dev_put(hp->pdev); | |
8d8706e2 | 1183 | } |
1da177e4 | 1184 | |
8d8706e2 AM |
1185 | if (misc_deregister(&rio_fw_device) < 0) { |
1186 | printk(KERN_INFO "rio: couldn't deregister control-device\n"); | |
1187 | } | |
1da177e4 LT |
1188 | |
1189 | ||
8d8706e2 | 1190 | rio_dprintk(RIO_DEBUG_CLEANUP, "Cleaning up drivers\n"); |
1da177e4 | 1191 | |
8d8706e2 | 1192 | rio_release_drivers(); |
1da177e4 | 1193 | |
8d8706e2 AM |
1194 | /* Release dynamically allocated memory */ |
1195 | kfree(p->RIOPortp); | |
1196 | kfree(p->RIOHosts); | |
1197 | kfree(p); | |
1da177e4 | 1198 | |
8d8706e2 | 1199 | func_exit(); |
1da177e4 LT |
1200 | } |
1201 | ||
1202 | module_init(rio_init); | |
1203 | module_exit(rio_exit); |