Commit | Line | Data |
---|---|---|
e01402b1 RB |
1 | /* |
2 | * Copyright (C) 2005 MIPS Technologies, Inc. All rights reserved. | |
a84c96e2 | 3 | * Copyright (C) 2005, 06 Ralf Baechle (ralf@linux-mips.org) |
e01402b1 RB |
4 | * |
5 | * This program is free software; you can distribute it and/or modify it | |
6 | * under the terms of the GNU General Public License (Version 2) as | |
7 | * published by the Free Software Foundation. | |
8 | * | |
9 | * This program is distributed in the hope it will be useful, but WITHOUT | |
10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 | * for more details. | |
13 | * | |
14 | * You should have received a copy of the GNU General Public License along | |
15 | * with this program; if not, write to the Free Software Foundation, Inc., | |
16 | * 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. | |
17 | * | |
18 | */ | |
19 | ||
bb3d7c7f | 20 | #include <linux/device.h> |
e01402b1 RB |
21 | #include <linux/kernel.h> |
22 | #include <linux/module.h> | |
23 | #include <linux/fs.h> | |
24 | #include <linux/init.h> | |
2600990e | 25 | #include <asm/uaccess.h> |
2600990e RB |
26 | #include <linux/list.h> |
27 | #include <linux/vmalloc.h> | |
28 | #include <linux/elf.h> | |
29 | #include <linux/seq_file.h> | |
30 | #include <linux/syscalls.h> | |
31 | #include <linux/moduleloader.h> | |
a84c96e2 | 32 | #include <linux/interrupt.h> |
e01402b1 RB |
33 | #include <linux/poll.h> |
34 | #include <linux/sched.h> | |
35 | #include <linux/wait.h> | |
36 | #include <asm/mipsmtregs.h> | |
bb3d7c7f | 37 | #include <asm/mips_mt.h> |
2600990e RB |
38 | #include <asm/cacheflush.h> |
39 | #include <asm/atomic.h> | |
e01402b1 RB |
40 | #include <asm/cpu.h> |
41 | #include <asm/processor.h> | |
2600990e RB |
42 | #include <asm/system.h> |
43 | #include <asm/vpe.h> | |
e01402b1 RB |
44 | #include <asm/rtlx.h> |
45 | ||
afc4841d | 46 | static struct rtlx_info *rtlx; |
e01402b1 RB |
47 | static int major; |
48 | static char module_name[] = "rtlx"; | |
e01402b1 RB |
49 | |
50 | static struct chan_waitqueues { | |
51 | wait_queue_head_t rt_queue; | |
52 | wait_queue_head_t lx_queue; | |
c4c4018b | 53 | atomic_t in_open; |
bc4809e9 | 54 | struct mutex mutex; |
e01402b1 RB |
55 | } channel_wqs[RTLX_CHANNELS]; |
56 | ||
2600990e | 57 | static struct vpe_notifications notify; |
982f6ffe | 58 | static int sp_stopping; |
2600990e | 59 | |
e01402b1 RB |
60 | extern void *vpe_get_shared(int index); |
61 | ||
937a8015 | 62 | static void rtlx_dispatch(void) |
e01402b1 | 63 | { |
97dcb82d | 64 | do_IRQ(MIPS_CPU_IRQ_BASE + MIPS_CPU_RTLX_IRQ); |
e01402b1 RB |
65 | } |
66 | ||
2600990e RB |
67 | |
68 | /* Interrupt handler may be called before rtlx_init has otherwise had | |
69 | a chance to run. | |
70 | */ | |
937a8015 | 71 | static irqreturn_t rtlx_interrupt(int irq, void *dev_id) |
e01402b1 | 72 | { |
1bbfc20d RB |
73 | unsigned int vpeflags; |
74 | unsigned long flags; | |
e01402b1 | 75 | int i; |
1928cc84 KK |
76 | |
77 | /* Ought not to be strictly necessary for SMTC builds */ | |
78 | local_irq_save(flags); | |
79 | vpeflags = dvpe(); | |
80 | set_c0_status(0x100 << MIPS_CPU_RTLX_IRQ); | |
81 | irq_enable_hazard(); | |
82 | evpe(vpeflags); | |
83 | local_irq_restore(flags); | |
e01402b1 RB |
84 | |
85 | for (i = 0; i < RTLX_CHANNELS; i++) { | |
2600990e RB |
86 | wake_up(&channel_wqs[i].lx_queue); |
87 | wake_up(&channel_wqs[i].rt_queue); | |
e01402b1 RB |
88 | } |
89 | ||
afc4841d | 90 | return IRQ_HANDLED; |
e01402b1 RB |
91 | } |
92 | ||
f5dbeaf5 | 93 | static void __used dump_rtlx(void) |
e01402b1 RB |
94 | { |
95 | int i; | |
96 | ||
2600990e | 97 | printk("id 0x%lx state %d\n", rtlx->id, rtlx->state); |
e01402b1 | 98 | |
e01402b1 | 99 | for (i = 0; i < RTLX_CHANNELS; i++) { |
2600990e | 100 | struct rtlx_channel *chan = &rtlx->channel[i]; |
e01402b1 | 101 | |
2600990e RB |
102 | printk(" rt_state %d lx_state %d buffer_size %d\n", |
103 | chan->rt_state, chan->lx_state, chan->buffer_size); | |
e01402b1 | 104 | |
2600990e RB |
105 | printk(" rt_read %d rt_write %d\n", |
106 | chan->rt_read, chan->rt_write); | |
e01402b1 | 107 | |
2600990e RB |
108 | printk(" lx_read %d lx_write %d\n", |
109 | chan->lx_read, chan->lx_write); | |
110 | ||
111 | printk(" rt_buffer <%s>\n", chan->rt_buffer); | |
112 | printk(" lx_buffer <%s>\n", chan->lx_buffer); | |
113 | } | |
114 | } | |
115 | ||
116 | /* call when we have the address of the shared structure from the SP side. */ | |
117 | static int rtlx_init(struct rtlx_info *rtlxi) | |
118 | { | |
119 | if (rtlxi->id != RTLX_ID) { | |
1928cc84 KK |
120 | printk(KERN_ERR "no valid RTLX id at 0x%p 0x%lx\n", |
121 | rtlxi, rtlxi->id); | |
2600990e RB |
122 | return -ENOEXEC; |
123 | } | |
e01402b1 RB |
124 | |
125 | rtlx = rtlxi; | |
afc4841d RB |
126 | |
127 | return 0; | |
e01402b1 RB |
128 | } |
129 | ||
2600990e RB |
130 | /* notifications */ |
131 | static void starting(int vpe) | |
e01402b1 | 132 | { |
2600990e RB |
133 | int i; |
134 | sp_stopping = 0; | |
135 | ||
136 | /* force a reload of rtlx */ | |
137 | rtlx=NULL; | |
138 | ||
139 | /* wake up any sleeping rtlx_open's */ | |
140 | for (i = 0; i < RTLX_CHANNELS; i++) | |
141 | wake_up_interruptible(&channel_wqs[i].lx_queue); | |
142 | } | |
143 | ||
144 | static void stopping(int vpe) | |
145 | { | |
146 | int i; | |
147 | ||
148 | sp_stopping = 1; | |
149 | for (i = 0; i < RTLX_CHANNELS; i++) | |
150 | wake_up_interruptible(&channel_wqs[i].lx_queue); | |
151 | } | |
152 | ||
153 | ||
154 | int rtlx_open(int index, int can_sleep) | |
155 | { | |
9e346820 | 156 | struct rtlx_info **p; |
67e2ccce | 157 | struct rtlx_channel *chan; |
c4c4018b | 158 | enum rtlx_state state; |
67e2ccce | 159 | int ret = 0; |
e01402b1 | 160 | |
2600990e RB |
161 | if (index >= RTLX_CHANNELS) { |
162 | printk(KERN_DEBUG "rtlx_open index out of range\n"); | |
163 | return -ENOSYS; | |
164 | } | |
165 | ||
c4c4018b RB |
166 | if (atomic_inc_return(&channel_wqs[index].in_open) > 1) { |
167 | printk(KERN_DEBUG "rtlx_open channel %d already opened\n", | |
168 | index); | |
169 | ret = -EBUSY; | |
170 | goto out_fail; | |
2600990e RB |
171 | } |
172 | ||
e01402b1 | 173 | if (rtlx == NULL) { |
07cc0c9e | 174 | if( (p = vpe_get_shared(tclimit)) == NULL) { |
1928cc84 KK |
175 | if (can_sleep) { |
176 | __wait_event_interruptible(channel_wqs[index].lx_queue, | |
177 | (p = vpe_get_shared(tclimit)), ret); | |
178 | if (ret) | |
67e2ccce | 179 | goto out_fail; |
1928cc84 KK |
180 | } else { |
181 | printk(KERN_DEBUG "No SP program loaded, and device " | |
182 | "opened with O_NONBLOCK\n"); | |
183 | ret = -ENOSYS; | |
184 | goto out_fail; | |
185 | } | |
e01402b1 RB |
186 | } |
187 | ||
9e346820 | 188 | smp_rmb(); |
e01402b1 | 189 | if (*p == NULL) { |
2600990e | 190 | if (can_sleep) { |
9e346820 RB |
191 | DEFINE_WAIT(wait); |
192 | ||
193 | for (;;) { | |
1928cc84 KK |
194 | prepare_to_wait( |
195 | &channel_wqs[index].lx_queue, | |
196 | &wait, TASK_INTERRUPTIBLE); | |
9e346820 RB |
197 | smp_rmb(); |
198 | if (*p != NULL) | |
199 | break; | |
200 | if (!signal_pending(current)) { | |
201 | schedule(); | |
202 | continue; | |
203 | } | |
204 | ret = -ERESTARTSYS; | |
67e2ccce | 205 | goto out_fail; |
9e346820 RB |
206 | } |
207 | finish_wait(&channel_wqs[index].lx_queue, &wait); | |
67e2ccce | 208 | } else { |
1928cc84 | 209 | pr_err(" *vpe_get_shared is NULL. " |
2600990e | 210 | "Has an SP program been loaded?\n"); |
67e2ccce RB |
211 | ret = -ENOSYS; |
212 | goto out_fail; | |
2600990e RB |
213 | } |
214 | } | |
215 | ||
216 | if ((unsigned int)*p < KSEG0) { | |
1928cc84 KK |
217 | printk(KERN_WARNING "vpe_get_shared returned an " |
218 | "invalid pointer maybe an error code %d\n", | |
219 | (int)*p); | |
67e2ccce RB |
220 | ret = -ENOSYS; |
221 | goto out_fail; | |
e01402b1 RB |
222 | } |
223 | ||
c4c4018b RB |
224 | if ((ret = rtlx_init(*p)) < 0) |
225 | goto out_ret; | |
e01402b1 RB |
226 | } |
227 | ||
2600990e | 228 | chan = &rtlx->channel[index]; |
e01402b1 | 229 | |
c4c4018b RB |
230 | state = xchg(&chan->lx_state, RTLX_STATE_OPENED); |
231 | if (state == RTLX_STATE_OPENED) { | |
232 | ret = -EBUSY; | |
233 | goto out_fail; | |
234 | } | |
67e2ccce RB |
235 | |
236 | out_fail: | |
c4c4018b RB |
237 | smp_mb(); |
238 | atomic_dec(&channel_wqs[index].in_open); | |
239 | smp_mb(); | |
67e2ccce | 240 | |
c4c4018b | 241 | out_ret: |
67e2ccce | 242 | return ret; |
e01402b1 RB |
243 | } |
244 | ||
2600990e | 245 | int rtlx_release(int index) |
e01402b1 | 246 | { |
1928cc84 KK |
247 | if (rtlx == NULL) { |
248 | pr_err("rtlx_release() with null rtlx\n"); | |
249 | return 0; | |
250 | } | |
2600990e | 251 | rtlx->channel[index].lx_state = RTLX_STATE_UNUSED; |
afc4841d | 252 | return 0; |
e01402b1 RB |
253 | } |
254 | ||
2600990e | 255 | unsigned int rtlx_read_poll(int index, int can_sleep) |
e01402b1 | 256 | { |
2600990e | 257 | struct rtlx_channel *chan; |
e01402b1 | 258 | |
2600990e RB |
259 | if (rtlx == NULL) |
260 | return 0; | |
e01402b1 | 261 | |
2600990e | 262 | chan = &rtlx->channel[index]; |
e01402b1 RB |
263 | |
264 | /* data available to read? */ | |
2600990e RB |
265 | if (chan->lx_read == chan->lx_write) { |
266 | if (can_sleep) { | |
67e2ccce | 267 | int ret = 0; |
e01402b1 | 268 | |
67e2ccce | 269 | __wait_event_interruptible(channel_wqs[index].lx_queue, |
1928cc84 KK |
270 | (chan->lx_read != chan->lx_write) || |
271 | sp_stopping, ret); | |
67e2ccce RB |
272 | if (ret) |
273 | return ret; | |
e01402b1 | 274 | |
67e2ccce RB |
275 | if (sp_stopping) |
276 | return 0; | |
277 | } else | |
2600990e RB |
278 | return 0; |
279 | } | |
280 | ||
281 | return (chan->lx_write + chan->buffer_size - chan->lx_read) | |
282 | % chan->buffer_size; | |
e01402b1 RB |
283 | } |
284 | ||
2600990e | 285 | static inline int write_spacefree(int read, int write, int size) |
e01402b1 | 286 | { |
2600990e RB |
287 | if (read == write) { |
288 | /* | |
289 | * Never fill the buffer completely, so indexes are always | |
290 | * equal if empty and only empty, or !equal if data available | |
291 | */ | |
292 | return size - 1; | |
293 | } | |
e01402b1 | 294 | |
2600990e RB |
295 | return ((read + size - write) % size) - 1; |
296 | } | |
e01402b1 | 297 | |
2600990e RB |
298 | unsigned int rtlx_write_poll(int index) |
299 | { | |
300 | struct rtlx_channel *chan = &rtlx->channel[index]; | |
1928cc84 KK |
301 | |
302 | return write_spacefree(chan->rt_read, chan->rt_write, | |
303 | chan->buffer_size); | |
2600990e | 304 | } |
e01402b1 | 305 | |
7f5a7716 | 306 | ssize_t rtlx_read(int index, void __user *buff, size_t count) |
2600990e | 307 | { |
61dcc6f4 | 308 | size_t lx_write, fl = 0L; |
2600990e | 309 | struct rtlx_channel *lx; |
46230aa6 | 310 | unsigned long failed; |
e01402b1 | 311 | |
2600990e RB |
312 | if (rtlx == NULL) |
313 | return -ENOSYS; | |
314 | ||
315 | lx = &rtlx->channel[index]; | |
e01402b1 | 316 | |
bc4809e9 | 317 | mutex_lock(&channel_wqs[index].mutex); |
61dcc6f4 RB |
318 | smp_rmb(); |
319 | lx_write = lx->lx_write; | |
320 | ||
e01402b1 | 321 | /* find out how much in total */ |
afc4841d | 322 | count = min(count, |
61dcc6f4 | 323 | (size_t)(lx_write + lx->buffer_size - lx->lx_read) |
2600990e | 324 | % lx->buffer_size); |
e01402b1 RB |
325 | |
326 | /* then how much from the read pointer onwards */ | |
61dcc6f4 | 327 | fl = min(count, (size_t)lx->buffer_size - lx->lx_read); |
e01402b1 | 328 | |
46230aa6 RB |
329 | failed = copy_to_user(buff, lx->lx_buffer + lx->lx_read, fl); |
330 | if (failed) | |
331 | goto out; | |
e01402b1 RB |
332 | |
333 | /* and if there is anything left at the beginning of the buffer */ | |
61dcc6f4 | 334 | if (count - fl) |
46230aa6 RB |
335 | failed = copy_to_user(buff + fl, lx->lx_buffer, count - fl); |
336 | ||
337 | out: | |
338 | count -= failed; | |
e01402b1 | 339 | |
61dcc6f4 RB |
340 | smp_wmb(); |
341 | lx->lx_read = (lx->lx_read + count) % lx->buffer_size; | |
342 | smp_wmb(); | |
bc4809e9 | 343 | mutex_unlock(&channel_wqs[index].mutex); |
e01402b1 | 344 | |
afc4841d | 345 | return count; |
e01402b1 RB |
346 | } |
347 | ||
7f5a7716 | 348 | ssize_t rtlx_write(int index, const void __user *buffer, size_t count) |
2600990e RB |
349 | { |
350 | struct rtlx_channel *rt; | |
7f5a7716 | 351 | unsigned long failed; |
61dcc6f4 | 352 | size_t rt_read; |
2600990e RB |
353 | size_t fl; |
354 | ||
355 | if (rtlx == NULL) | |
356 | return(-ENOSYS); | |
357 | ||
358 | rt = &rtlx->channel[index]; | |
359 | ||
bc4809e9 | 360 | mutex_lock(&channel_wqs[index].mutex); |
61dcc6f4 RB |
361 | smp_rmb(); |
362 | rt_read = rt->rt_read; | |
363 | ||
2600990e | 364 | /* total number of bytes to copy */ |
1928cc84 KK |
365 | count = min(count, (size_t)write_spacefree(rt_read, rt->rt_write, |
366 | rt->buffer_size)); | |
2600990e RB |
367 | |
368 | /* first bit from write pointer to the end of the buffer, or count */ | |
369 | fl = min(count, (size_t) rt->buffer_size - rt->rt_write); | |
370 | ||
46230aa6 RB |
371 | failed = copy_from_user(rt->rt_buffer + rt->rt_write, buffer, fl); |
372 | if (failed) | |
373 | goto out; | |
2600990e RB |
374 | |
375 | /* if there's any left copy to the beginning of the buffer */ | |
46230aa6 RB |
376 | if (count - fl) { |
377 | failed = copy_from_user(rt->rt_buffer, buffer + fl, count - fl); | |
378 | } | |
379 | ||
380 | out: | |
7f5a7716 | 381 | count -= failed; |
2600990e | 382 | |
61dcc6f4 RB |
383 | smp_wmb(); |
384 | rt->rt_write = (rt->rt_write + count) % rt->buffer_size; | |
385 | smp_wmb(); | |
bc4809e9 | 386 | mutex_unlock(&channel_wqs[index].mutex); |
2600990e | 387 | |
61dcc6f4 | 388 | return count; |
2600990e RB |
389 | } |
390 | ||
391 | ||
392 | static int file_open(struct inode *inode, struct file *filp) | |
393 | { | |
1bbfc20d | 394 | return rtlx_open(iminor(inode), (filp->f_flags & O_NONBLOCK) ? 0 : 1); |
2600990e RB |
395 | } |
396 | ||
397 | static int file_release(struct inode *inode, struct file *filp) | |
398 | { | |
1bbfc20d | 399 | return rtlx_release(iminor(inode)); |
2600990e RB |
400 | } |
401 | ||
402 | static unsigned int file_poll(struct file *file, poll_table * wait) | |
403 | { | |
404 | int minor; | |
405 | unsigned int mask = 0; | |
406 | ||
1b04fe9a | 407 | minor = iminor(file->f_path.dentry->d_inode); |
2600990e RB |
408 | |
409 | poll_wait(file, &channel_wqs[minor].rt_queue, wait); | |
410 | poll_wait(file, &channel_wqs[minor].lx_queue, wait); | |
411 | ||
412 | if (rtlx == NULL) | |
413 | return 0; | |
414 | ||
415 | /* data available to read? */ | |
416 | if (rtlx_read_poll(minor, 0)) | |
417 | mask |= POLLIN | POLLRDNORM; | |
418 | ||
419 | /* space to write */ | |
420 | if (rtlx_write_poll(minor)) | |
421 | mask |= POLLOUT | POLLWRNORM; | |
422 | ||
423 | return mask; | |
424 | } | |
425 | ||
426 | static ssize_t file_read(struct file *file, char __user * buffer, size_t count, | |
427 | loff_t * ppos) | |
428 | { | |
1b04fe9a | 429 | int minor = iminor(file->f_path.dentry->d_inode); |
2600990e RB |
430 | |
431 | /* data available? */ | |
432 | if (!rtlx_read_poll(minor, (file->f_flags & O_NONBLOCK) ? 0 : 1)) { | |
433 | return 0; // -EAGAIN makes cat whinge | |
434 | } | |
435 | ||
46230aa6 | 436 | return rtlx_read(minor, buffer, count); |
2600990e RB |
437 | } |
438 | ||
439 | static ssize_t file_write(struct file *file, const char __user * buffer, | |
e01402b1 RB |
440 | size_t count, loff_t * ppos) |
441 | { | |
442 | int minor; | |
443 | struct rtlx_channel *rt; | |
e01402b1 | 444 | |
1b04fe9a | 445 | minor = iminor(file->f_path.dentry->d_inode); |
e01402b1 RB |
446 | rt = &rtlx->channel[minor]; |
447 | ||
448 | /* any space left... */ | |
2600990e | 449 | if (!rtlx_write_poll(minor)) { |
67e2ccce | 450 | int ret = 0; |
e01402b1 RB |
451 | |
452 | if (file->f_flags & O_NONBLOCK) | |
afc4841d | 453 | return -EAGAIN; |
e01402b1 | 454 | |
67e2ccce RB |
455 | __wait_event_interruptible(channel_wqs[minor].rt_queue, |
456 | rtlx_write_poll(minor), | |
457 | ret); | |
458 | if (ret) | |
459 | return ret; | |
e01402b1 RB |
460 | } |
461 | ||
46230aa6 | 462 | return rtlx_write(minor, buffer, count); |
e01402b1 RB |
463 | } |
464 | ||
5dfe4c96 | 465 | static const struct file_operations rtlx_fops = { |
2600990e RB |
466 | .owner = THIS_MODULE, |
467 | .open = file_open, | |
468 | .release = file_release, | |
469 | .write = file_write, | |
470 | .read = file_read, | |
471 | .poll = file_poll | |
e01402b1 RB |
472 | }; |
473 | ||
2600990e RB |
474 | static struct irqaction rtlx_irq = { |
475 | .handler = rtlx_interrupt, | |
f40298fd | 476 | .flags = IRQF_DISABLED, |
2600990e RB |
477 | .name = "RTLX", |
478 | }; | |
479 | ||
97dcb82d | 480 | static int rtlx_irq_num = MIPS_CPU_IRQ_BASE + MIPS_CPU_RTLX_IRQ; |
2600990e | 481 | |
afc4841d RB |
482 | static char register_chrdev_failed[] __initdata = |
483 | KERN_ERR "rtlx_module_init: unable to register device\n"; | |
484 | ||
9d5a3f5f | 485 | static int __init rtlx_module_init(void) |
e01402b1 | 486 | { |
bb3d7c7f RB |
487 | struct device *dev; |
488 | int i, err; | |
2600990e | 489 | |
07cc0c9e RB |
490 | if (!cpu_has_mipsmt) { |
491 | printk("VPE loader: not a MIPS MT capable processor\n"); | |
492 | return -ENODEV; | |
493 | } | |
494 | ||
495 | if (tclimit == 0) { | |
496 | printk(KERN_WARNING "No TCs reserved for AP/SP, not " | |
497 | "initializing RTLX.\nPass maxtcs=<n> argument as kernel " | |
498 | "argument\n"); | |
499 | ||
500 | return -ENODEV; | |
501 | } | |
502 | ||
afc4841d RB |
503 | major = register_chrdev(0, module_name, &rtlx_fops); |
504 | if (major < 0) { | |
505 | printk(register_chrdev_failed); | |
506 | return major; | |
e01402b1 RB |
507 | } |
508 | ||
2600990e RB |
509 | /* initialise the wait queues */ |
510 | for (i = 0; i < RTLX_CHANNELS; i++) { | |
511 | init_waitqueue_head(&channel_wqs[i].rt_queue); | |
512 | init_waitqueue_head(&channel_wqs[i].lx_queue); | |
c4c4018b | 513 | atomic_set(&channel_wqs[i].in_open, 0); |
bc4809e9 | 514 | mutex_init(&channel_wqs[i].mutex); |
bb3d7c7f | 515 | |
a9b12619 GKH |
516 | dev = device_create(mt_class, NULL, MKDEV(major, i), NULL, |
517 | "%s%d", module_name, i); | |
bb3d7c7f RB |
518 | if (IS_ERR(dev)) { |
519 | err = PTR_ERR(dev); | |
520 | goto out_chrdev; | |
521 | } | |
2600990e RB |
522 | } |
523 | ||
524 | /* set up notifiers */ | |
525 | notify.start = starting; | |
526 | notify.stop = stopping; | |
07cc0c9e | 527 | vpe_notify(tclimit, ¬ify); |
2600990e RB |
528 | |
529 | if (cpu_has_vint) | |
530 | set_vi_handler(MIPS_CPU_RTLX_IRQ, rtlx_dispatch); | |
1928cc84 KK |
531 | else { |
532 | pr_err("APRP RTLX init on non-vectored-interrupt processor\n"); | |
533 | err = -ENODEV; | |
534 | goto out_chrdev; | |
535 | } | |
2600990e RB |
536 | |
537 | rtlx_irq.dev_id = rtlx; | |
538 | setup_irq(rtlx_irq_num, &rtlx_irq); | |
539 | ||
afc4841d | 540 | return 0; |
bb3d7c7f RB |
541 | |
542 | out_chrdev: | |
543 | for (i = 0; i < RTLX_CHANNELS; i++) | |
544 | device_destroy(mt_class, MKDEV(major, i)); | |
545 | ||
546 | return err; | |
e01402b1 RB |
547 | } |
548 | ||
afc4841d | 549 | static void __exit rtlx_module_exit(void) |
e01402b1 | 550 | { |
bb3d7c7f RB |
551 | int i; |
552 | ||
553 | for (i = 0; i < RTLX_CHANNELS; i++) | |
554 | device_destroy(mt_class, MKDEV(major, i)); | |
555 | ||
e01402b1 RB |
556 | unregister_chrdev(major, module_name); |
557 | } | |
558 | ||
559 | module_init(rtlx_module_init); | |
560 | module_exit(rtlx_module_exit); | |
afc4841d | 561 | |
e01402b1 | 562 | MODULE_DESCRIPTION("MIPS RTLX"); |
2600990e | 563 | MODULE_AUTHOR("Elizabeth Oldham, MIPS Technologies, Inc."); |
e01402b1 | 564 | MODULE_LICENSE("GPL"); |