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1da177e4 LT |
1 | /* $Id: sun4d_irq.c,v 1.29 2001/12/11 04:55:51 davem Exp $ |
2 | * arch/sparc/kernel/sun4d_irq.c: | |
3 | * SS1000/SC2000 interrupt handling. | |
4 | * | |
5 | * Copyright (C) 1997,1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz) | |
6 | * Heavily based on arch/sparc/kernel/irq.c. | |
7 | */ | |
8 | ||
1da177e4 LT |
9 | #include <linux/errno.h> |
10 | #include <linux/linkage.h> | |
11 | #include <linux/kernel_stat.h> | |
12 | #include <linux/signal.h> | |
13 | #include <linux/sched.h> | |
14 | #include <linux/ptrace.h> | |
15 | #include <linux/interrupt.h> | |
16 | #include <linux/slab.h> | |
17 | #include <linux/random.h> | |
18 | #include <linux/init.h> | |
19 | #include <linux/smp.h> | |
1da177e4 LT |
20 | #include <linux/spinlock.h> |
21 | #include <linux/seq_file.h> | |
22 | ||
23 | #include <asm/ptrace.h> | |
24 | #include <asm/processor.h> | |
25 | #include <asm/system.h> | |
26 | #include <asm/psr.h> | |
27 | #include <asm/smp.h> | |
28 | #include <asm/vaddrs.h> | |
29 | #include <asm/timer.h> | |
30 | #include <asm/openprom.h> | |
31 | #include <asm/oplib.h> | |
32 | #include <asm/traps.h> | |
33 | #include <asm/irq.h> | |
34 | #include <asm/io.h> | |
35 | #include <asm/pgalloc.h> | |
36 | #include <asm/pgtable.h> | |
37 | #include <asm/sbus.h> | |
38 | #include <asm/sbi.h> | |
39 | #include <asm/cacheflush.h> | |
0d84438d | 40 | #include <asm/irq_regs.h> |
1da177e4 LT |
41 | |
42 | /* If you trust current SCSI layer to handle different SCSI IRQs, enable this. I don't trust it... -jj */ | |
43 | /* #define DISTRIBUTE_IRQS */ | |
44 | ||
45 | struct sun4d_timer_regs *sun4d_timers; | |
46 | #define TIMER_IRQ 10 | |
47 | ||
48 | #define MAX_STATIC_ALLOC 4 | |
49 | extern struct irqaction static_irqaction[MAX_STATIC_ALLOC]; | |
50 | extern int static_irq_count; | |
51 | unsigned char cpu_leds[32]; | |
52 | #ifdef CONFIG_SMP | |
53 | unsigned char sbus_tid[32]; | |
54 | #endif | |
55 | ||
a54123e2 | 56 | static struct irqaction *irq_action[NR_IRQS]; |
1da177e4 LT |
57 | extern spinlock_t irq_action_lock; |
58 | ||
59 | struct sbus_action { | |
60 | struct irqaction *action; | |
61 | /* For SMP this needs to be extended */ | |
62 | } *sbus_actions; | |
63 | ||
64 | static int pil_to_sbus[] = { | |
65 | 0, 0, 1, 2, 0, 3, 0, 4, 0, 5, 0, 6, 0, 7, 0, 0, | |
66 | }; | |
67 | ||
68 | static int sbus_to_pil[] = { | |
69 | 0, 2, 3, 5, 7, 9, 11, 13, | |
70 | }; | |
71 | ||
72 | static int nsbi; | |
73 | #ifdef CONFIG_SMP | |
74 | DEFINE_SPINLOCK(sun4d_imsk_lock); | |
75 | #endif | |
76 | ||
77 | int show_sun4d_interrupts(struct seq_file *p, void *v) | |
78 | { | |
79 | int i = *(loff_t *) v, j = 0, k = 0, sbusl; | |
80 | struct irqaction * action; | |
81 | unsigned long flags; | |
82 | #ifdef CONFIG_SMP | |
83 | int x; | |
84 | #endif | |
85 | ||
86 | spin_lock_irqsave(&irq_action_lock, flags); | |
87 | if (i < NR_IRQS) { | |
88 | sbusl = pil_to_sbus[i]; | |
89 | if (!sbusl) { | |
90 | action = *(i + irq_action); | |
91 | if (!action) | |
92 | goto out_unlock; | |
93 | } else { | |
94 | for (j = 0; j < nsbi; j++) { | |
95 | for (k = 0; k < 4; k++) | |
96 | if ((action = sbus_actions [(j << 5) + (sbusl << 2) + k].action)) | |
97 | goto found_it; | |
98 | } | |
99 | goto out_unlock; | |
100 | } | |
101 | found_it: seq_printf(p, "%3d: ", i); | |
102 | #ifndef CONFIG_SMP | |
103 | seq_printf(p, "%10u ", kstat_irqs(i)); | |
104 | #else | |
394e3902 AM |
105 | for_each_online_cpu(x) |
106 | seq_printf(p, "%10u ", | |
107 | kstat_cpu(cpu_logical_map(x)).irqs[i]); | |
1da177e4 LT |
108 | #endif |
109 | seq_printf(p, "%c %s", | |
67413202 | 110 | (action->flags & IRQF_DISABLED) ? '+' : ' ', |
1da177e4 LT |
111 | action->name); |
112 | action = action->next; | |
113 | for (;;) { | |
114 | for (; action; action = action->next) { | |
115 | seq_printf(p, ",%s %s", | |
67413202 | 116 | (action->flags & IRQF_DISABLED) ? " +" : "", |
1da177e4 LT |
117 | action->name); |
118 | } | |
119 | if (!sbusl) break; | |
120 | k++; | |
121 | if (k < 4) | |
122 | action = sbus_actions [(j << 5) + (sbusl << 2) + k].action; | |
123 | else { | |
124 | j++; | |
125 | if (j == nsbi) break; | |
126 | k = 0; | |
127 | action = sbus_actions [(j << 5) + (sbusl << 2)].action; | |
128 | } | |
129 | } | |
130 | seq_putc(p, '\n'); | |
131 | } | |
132 | out_unlock: | |
133 | spin_unlock_irqrestore(&irq_action_lock, flags); | |
134 | return 0; | |
135 | } | |
136 | ||
137 | void sun4d_free_irq(unsigned int irq, void *dev_id) | |
138 | { | |
139 | struct irqaction *action, **actionp; | |
140 | struct irqaction *tmp = NULL; | |
141 | unsigned long flags; | |
142 | ||
143 | spin_lock_irqsave(&irq_action_lock, flags); | |
144 | if (irq < 15) | |
145 | actionp = irq + irq_action; | |
146 | else | |
147 | actionp = &(sbus_actions[irq - (1 << 5)].action); | |
148 | action = *actionp; | |
149 | if (!action) { | |
150 | printk("Trying to free free IRQ%d\n",irq); | |
151 | goto out_unlock; | |
152 | } | |
153 | if (dev_id) { | |
154 | for (; action; action = action->next) { | |
155 | if (action->dev_id == dev_id) | |
156 | break; | |
157 | tmp = action; | |
158 | } | |
159 | if (!action) { | |
160 | printk("Trying to free free shared IRQ%d\n",irq); | |
161 | goto out_unlock; | |
162 | } | |
67413202 | 163 | } else if (action->flags & IRQF_SHARED) { |
1da177e4 LT |
164 | printk("Trying to free shared IRQ%d with NULL device ID\n", irq); |
165 | goto out_unlock; | |
166 | } | |
167 | if (action->flags & SA_STATIC_ALLOC) | |
168 | { | |
169 | /* This interrupt is marked as specially allocated | |
170 | * so it is a bad idea to free it. | |
171 | */ | |
172 | printk("Attempt to free statically allocated IRQ%d (%s)\n", | |
173 | irq, action->name); | |
174 | goto out_unlock; | |
175 | } | |
176 | ||
177 | if (action && tmp) | |
178 | tmp->next = action->next; | |
179 | else | |
180 | *actionp = action->next; | |
181 | ||
182 | spin_unlock_irqrestore(&irq_action_lock, flags); | |
183 | ||
184 | synchronize_irq(irq); | |
185 | ||
186 | spin_lock_irqsave(&irq_action_lock, flags); | |
187 | ||
188 | kfree(action); | |
189 | ||
190 | if (!(*actionp)) | |
191 | disable_irq(irq); | |
192 | ||
193 | out_unlock: | |
194 | spin_unlock_irqrestore(&irq_action_lock, flags); | |
195 | } | |
196 | ||
197 | extern void unexpected_irq(int, void *, struct pt_regs *); | |
198 | ||
199 | void sun4d_handler_irq(int irq, struct pt_regs * regs) | |
200 | { | |
0d84438d | 201 | struct pt_regs *old_regs; |
1da177e4 LT |
202 | struct irqaction * action; |
203 | int cpu = smp_processor_id(); | |
204 | /* SBUS IRQ level (1 - 7) */ | |
205 | int sbusl = pil_to_sbus[irq]; | |
206 | ||
207 | /* FIXME: Is this necessary?? */ | |
208 | cc_get_ipen(); | |
209 | ||
210 | cc_set_iclr(1 << irq); | |
211 | ||
0d84438d | 212 | old_regs = set_irq_regs(regs); |
1da177e4 LT |
213 | irq_enter(); |
214 | kstat_cpu(cpu).irqs[irq]++; | |
215 | if (!sbusl) { | |
216 | action = *(irq + irq_action); | |
217 | if (!action) | |
218 | unexpected_irq(irq, NULL, regs); | |
219 | do { | |
0d84438d | 220 | action->handler(irq, action->dev_id); |
1da177e4 LT |
221 | action = action->next; |
222 | } while (action); | |
223 | } else { | |
224 | int bus_mask = bw_get_intr_mask(sbusl) & 0x3ffff; | |
225 | int sbino; | |
226 | struct sbus_action *actionp; | |
227 | unsigned mask, slot; | |
228 | int sbil = (sbusl << 2); | |
229 | ||
230 | bw_clear_intr_mask(sbusl, bus_mask); | |
231 | ||
232 | /* Loop for each pending SBI */ | |
233 | for (sbino = 0; bus_mask; sbino++, bus_mask >>= 1) | |
234 | if (bus_mask & 1) { | |
235 | mask = acquire_sbi(SBI2DEVID(sbino), 0xf << sbil); | |
236 | mask &= (0xf << sbil); | |
237 | actionp = sbus_actions + (sbino << 5) + (sbil); | |
238 | /* Loop for each pending SBI slot */ | |
239 | for (slot = (1 << sbil); mask; slot <<= 1, actionp++) | |
240 | if (mask & slot) { | |
241 | mask &= ~slot; | |
242 | action = actionp->action; | |
243 | ||
244 | if (!action) | |
245 | unexpected_irq(irq, NULL, regs); | |
246 | do { | |
0d84438d | 247 | action->handler(irq, action->dev_id); |
1da177e4 LT |
248 | action = action->next; |
249 | } while (action); | |
250 | release_sbi(SBI2DEVID(sbino), slot); | |
251 | } | |
252 | } | |
253 | } | |
254 | irq_exit(); | |
0d84438d | 255 | set_irq_regs(old_regs); |
1da177e4 LT |
256 | } |
257 | ||
258 | unsigned int sun4d_build_irq(struct sbus_dev *sdev, int irq) | |
259 | { | |
260 | int sbusl = pil_to_sbus[irq]; | |
261 | ||
262 | if (sbusl) | |
263 | return ((sdev->bus->board + 1) << 5) + (sbusl << 2) + sdev->slot; | |
264 | else | |
265 | return irq; | |
266 | } | |
267 | ||
268 | unsigned int sun4d_sbint_to_irq(struct sbus_dev *sdev, unsigned int sbint) | |
269 | { | |
270 | if (sbint >= sizeof(sbus_to_pil)) { | |
271 | printk(KERN_ERR "%s: bogus SBINT %d\n", sdev->prom_name, sbint); | |
272 | BUG(); | |
273 | } | |
274 | return sun4d_build_irq(sdev, sbus_to_pil[sbint]); | |
275 | } | |
276 | ||
277 | int sun4d_request_irq(unsigned int irq, | |
40220c1a | 278 | irq_handler_t handler, |
1da177e4 LT |
279 | unsigned long irqflags, const char * devname, void *dev_id) |
280 | { | |
281 | struct irqaction *action, *tmp = NULL, **actionp; | |
282 | unsigned long flags; | |
283 | int ret; | |
284 | ||
285 | if(irq > 14 && irq < (1 << 5)) { | |
286 | ret = -EINVAL; | |
287 | goto out; | |
288 | } | |
289 | ||
290 | if (!handler) { | |
291 | ret = -EINVAL; | |
292 | goto out; | |
293 | } | |
294 | ||
295 | spin_lock_irqsave(&irq_action_lock, flags); | |
296 | ||
297 | if (irq >= (1 << 5)) | |
298 | actionp = &(sbus_actions[irq - (1 << 5)].action); | |
299 | else | |
300 | actionp = irq + irq_action; | |
301 | action = *actionp; | |
302 | ||
303 | if (action) { | |
67413202 | 304 | if ((action->flags & IRQF_SHARED) && (irqflags & IRQF_SHARED)) { |
1da177e4 LT |
305 | for (tmp = action; tmp->next; tmp = tmp->next); |
306 | } else { | |
307 | ret = -EBUSY; | |
308 | goto out_unlock; | |
309 | } | |
67413202 | 310 | if ((action->flags & IRQF_DISABLED) ^ (irqflags & IRQF_DISABLED)) { |
1da177e4 LT |
311 | printk("Attempt to mix fast and slow interrupts on IRQ%d denied\n", irq); |
312 | ret = -EBUSY; | |
313 | goto out_unlock; | |
314 | } | |
315 | action = NULL; /* Or else! */ | |
316 | } | |
317 | ||
318 | /* If this is flagged as statically allocated then we use our | |
319 | * private struct which is never freed. | |
320 | */ | |
321 | if (irqflags & SA_STATIC_ALLOC) { | |
322 | if (static_irq_count < MAX_STATIC_ALLOC) | |
323 | action = &static_irqaction[static_irq_count++]; | |
324 | else | |
325 | printk("Request for IRQ%d (%s) SA_STATIC_ALLOC failed using kmalloc\n", irq, devname); | |
326 | } | |
327 | ||
328 | if (action == NULL) | |
5cbded58 | 329 | action = kmalloc(sizeof(struct irqaction), |
1da177e4 LT |
330 | GFP_ATOMIC); |
331 | ||
332 | if (!action) { | |
333 | ret = -ENOMEM; | |
334 | goto out_unlock; | |
335 | } | |
336 | ||
337 | action->handler = handler; | |
338 | action->flags = irqflags; | |
339 | cpus_clear(action->mask); | |
340 | action->name = devname; | |
341 | action->next = NULL; | |
342 | action->dev_id = dev_id; | |
343 | ||
344 | if (tmp) | |
345 | tmp->next = action; | |
346 | else | |
347 | *actionp = action; | |
348 | ||
349 | enable_irq(irq); | |
350 | ||
351 | ret = 0; | |
352 | out_unlock: | |
353 | spin_unlock_irqrestore(&irq_action_lock, flags); | |
354 | out: | |
355 | return ret; | |
356 | } | |
357 | ||
358 | static void sun4d_disable_irq(unsigned int irq) | |
359 | { | |
360 | #ifdef CONFIG_SMP | |
361 | int tid = sbus_tid[(irq >> 5) - 1]; | |
362 | unsigned long flags; | |
363 | #endif | |
364 | ||
365 | if (irq < NR_IRQS) return; | |
366 | #ifdef CONFIG_SMP | |
367 | spin_lock_irqsave(&sun4d_imsk_lock, flags); | |
368 | cc_set_imsk_other(tid, cc_get_imsk_other(tid) | (1 << sbus_to_pil[(irq >> 2) & 7])); | |
369 | spin_unlock_irqrestore(&sun4d_imsk_lock, flags); | |
370 | #else | |
371 | cc_set_imsk(cc_get_imsk() | (1 << sbus_to_pil[(irq >> 2) & 7])); | |
372 | #endif | |
373 | } | |
374 | ||
375 | static void sun4d_enable_irq(unsigned int irq) | |
376 | { | |
377 | #ifdef CONFIG_SMP | |
378 | int tid = sbus_tid[(irq >> 5) - 1]; | |
379 | unsigned long flags; | |
380 | #endif | |
381 | ||
382 | if (irq < NR_IRQS) return; | |
383 | #ifdef CONFIG_SMP | |
384 | spin_lock_irqsave(&sun4d_imsk_lock, flags); | |
385 | cc_set_imsk_other(tid, cc_get_imsk_other(tid) & ~(1 << sbus_to_pil[(irq >> 2) & 7])); | |
386 | spin_unlock_irqrestore(&sun4d_imsk_lock, flags); | |
387 | #else | |
388 | cc_set_imsk(cc_get_imsk() & ~(1 << sbus_to_pil[(irq >> 2) & 7])); | |
389 | #endif | |
390 | } | |
391 | ||
392 | #ifdef CONFIG_SMP | |
393 | static void sun4d_set_cpu_int(int cpu, int level) | |
394 | { | |
395 | sun4d_send_ipi(cpu, level); | |
396 | } | |
397 | ||
398 | static void sun4d_clear_ipi(int cpu, int level) | |
399 | { | |
400 | } | |
401 | ||
402 | static void sun4d_set_udt(int cpu) | |
403 | { | |
404 | } | |
405 | ||
406 | /* Setup IRQ distribution scheme. */ | |
407 | void __init sun4d_distribute_irqs(void) | |
408 | { | |
409 | #ifdef DISTRIBUTE_IRQS | |
410 | struct sbus_bus *sbus; | |
411 | unsigned long sbus_serving_map; | |
412 | ||
413 | sbus_serving_map = cpu_present_map; | |
414 | for_each_sbus(sbus) { | |
415 | if ((sbus->board * 2) == boot_cpu_id && (cpu_present_map & (1 << (sbus->board * 2 + 1)))) | |
416 | sbus_tid[sbus->board] = (sbus->board * 2 + 1); | |
417 | else if (cpu_present_map & (1 << (sbus->board * 2))) | |
418 | sbus_tid[sbus->board] = (sbus->board * 2); | |
419 | else if (cpu_present_map & (1 << (sbus->board * 2 + 1))) | |
420 | sbus_tid[sbus->board] = (sbus->board * 2 + 1); | |
421 | else | |
422 | sbus_tid[sbus->board] = 0xff; | |
423 | if (sbus_tid[sbus->board] != 0xff) | |
424 | sbus_serving_map &= ~(1 << sbus_tid[sbus->board]); | |
425 | } | |
426 | for_each_sbus(sbus) | |
427 | if (sbus_tid[sbus->board] == 0xff) { | |
428 | int i = 31; | |
429 | ||
430 | if (!sbus_serving_map) | |
431 | sbus_serving_map = cpu_present_map; | |
432 | while (!(sbus_serving_map & (1 << i))) | |
433 | i--; | |
434 | sbus_tid[sbus->board] = i; | |
435 | sbus_serving_map &= ~(1 << i); | |
436 | } | |
437 | for_each_sbus(sbus) { | |
438 | printk("sbus%d IRQs directed to CPU%d\n", sbus->board, sbus_tid[sbus->board]); | |
439 | set_sbi_tid(sbus->devid, sbus_tid[sbus->board] << 3); | |
440 | } | |
441 | #else | |
442 | struct sbus_bus *sbus; | |
443 | int cpuid = cpu_logical_map(1); | |
444 | ||
445 | if (cpuid == -1) | |
446 | cpuid = cpu_logical_map(0); | |
447 | for_each_sbus(sbus) { | |
448 | sbus_tid[sbus->board] = cpuid; | |
449 | set_sbi_tid(sbus->devid, cpuid << 3); | |
450 | } | |
451 | printk("All sbus IRQs directed to CPU%d\n", cpuid); | |
452 | #endif | |
453 | } | |
454 | #endif | |
455 | ||
456 | static void sun4d_clear_clock_irq(void) | |
457 | { | |
458 | volatile unsigned int clear_intr; | |
459 | clear_intr = sun4d_timers->l10_timer_limit; | |
460 | } | |
461 | ||
462 | static void sun4d_clear_profile_irq(int cpu) | |
463 | { | |
464 | bw_get_prof_limit(cpu); | |
465 | } | |
466 | ||
467 | static void sun4d_load_profile_irq(int cpu, unsigned int limit) | |
468 | { | |
469 | bw_set_prof_limit(cpu, limit); | |
470 | } | |
471 | ||
40220c1a | 472 | static void __init sun4d_init_timers(irq_handler_t counter_fn) |
1da177e4 LT |
473 | { |
474 | int irq; | |
475 | int cpu; | |
476 | struct resource r; | |
477 | int mid; | |
478 | ||
479 | /* Map the User Timer registers. */ | |
480 | memset(&r, 0, sizeof(r)); | |
481 | #ifdef CONFIG_SMP | |
482 | r.start = CSR_BASE(boot_cpu_id)+BW_TIMER_LIMIT; | |
483 | #else | |
484 | r.start = CSR_BASE(0)+BW_TIMER_LIMIT; | |
485 | #endif | |
486 | r.flags = 0xf; | |
487 | sun4d_timers = (struct sun4d_timer_regs *) sbus_ioremap(&r, 0, | |
488 | PAGE_SIZE, "user timer"); | |
489 | ||
490 | sun4d_timers->l10_timer_limit = (((1000000/HZ) + 1) << 10); | |
491 | master_l10_counter = &sun4d_timers->l10_cur_count; | |
492 | master_l10_limit = &sun4d_timers->l10_timer_limit; | |
493 | ||
494 | irq = request_irq(TIMER_IRQ, | |
495 | counter_fn, | |
67413202 | 496 | (IRQF_DISABLED | SA_STATIC_ALLOC), |
1da177e4 LT |
497 | "timer", NULL); |
498 | if (irq) { | |
499 | prom_printf("time_init: unable to attach IRQ%d\n",TIMER_IRQ); | |
500 | prom_halt(); | |
501 | } | |
502 | ||
503 | /* Enable user timer free run for CPU 0 in BW */ | |
504 | /* bw_set_ctrl(0, bw_get_ctrl(0) | BW_CTRL_USER_TIMER); */ | |
505 | ||
506 | cpu = 0; | |
507 | while (!cpu_find_by_instance(cpu, NULL, &mid)) { | |
508 | sun4d_load_profile_irq(mid >> 3, 0); | |
509 | cpu++; | |
510 | } | |
511 | ||
512 | #ifdef CONFIG_SMP | |
513 | { | |
514 | unsigned long flags; | |
515 | extern unsigned long lvl14_save[4]; | |
516 | struct tt_entry *trap_table = &sparc_ttable[SP_TRAP_IRQ1 + (14 - 1)]; | |
517 | extern unsigned int real_irq_entry[], smp4d_ticker[]; | |
518 | extern unsigned int patchme_maybe_smp_msg[]; | |
519 | ||
520 | /* Adjust so that we jump directly to smp4d_ticker */ | |
521 | lvl14_save[2] += smp4d_ticker - real_irq_entry; | |
522 | ||
523 | /* For SMP we use the level 14 ticker, however the bootup code | |
d1a78c32 | 524 | * has copied the firmware's level 14 vector into the boot cpu's |
1da177e4 LT |
525 | * trap table, we must fix this now or we get squashed. |
526 | */ | |
527 | local_irq_save(flags); | |
528 | patchme_maybe_smp_msg[0] = 0x01000000; /* NOP out the branch */ | |
529 | trap_table->inst_one = lvl14_save[0]; | |
530 | trap_table->inst_two = lvl14_save[1]; | |
531 | trap_table->inst_three = lvl14_save[2]; | |
532 | trap_table->inst_four = lvl14_save[3]; | |
533 | local_flush_cache_all(); | |
534 | local_irq_restore(flags); | |
535 | } | |
536 | #endif | |
537 | } | |
538 | ||
539 | void __init sun4d_init_sbi_irq(void) | |
540 | { | |
541 | struct sbus_bus *sbus; | |
542 | unsigned mask; | |
543 | ||
544 | nsbi = 0; | |
545 | for_each_sbus(sbus) | |
546 | nsbi++; | |
c80892d1 | 547 | sbus_actions = kzalloc (nsbi * 8 * 4 * sizeof(struct sbus_action), GFP_ATOMIC); |
d4accd60 DM |
548 | if (!sbus_actions) { |
549 | prom_printf("SUN4D: Cannot allocate sbus_actions, halting.\n"); | |
550 | prom_halt(); | |
551 | } | |
1da177e4 LT |
552 | for_each_sbus(sbus) { |
553 | #ifdef CONFIG_SMP | |
554 | extern unsigned char boot_cpu_id; | |
555 | ||
556 | set_sbi_tid(sbus->devid, boot_cpu_id << 3); | |
557 | sbus_tid[sbus->board] = boot_cpu_id; | |
558 | #endif | |
559 | /* Get rid of pending irqs from PROM */ | |
560 | mask = acquire_sbi(sbus->devid, 0xffffffff); | |
561 | if (mask) { | |
562 | printk ("Clearing pending IRQs %08x on SBI %d\n", mask, sbus->board); | |
563 | release_sbi(sbus->devid, mask); | |
564 | } | |
565 | } | |
566 | } | |
567 | ||
1da177e4 LT |
568 | void __init sun4d_init_IRQ(void) |
569 | { | |
570 | local_irq_disable(); | |
571 | ||
572 | BTFIXUPSET_CALL(sbint_to_irq, sun4d_sbint_to_irq, BTFIXUPCALL_NORM); | |
573 | BTFIXUPSET_CALL(enable_irq, sun4d_enable_irq, BTFIXUPCALL_NORM); | |
574 | BTFIXUPSET_CALL(disable_irq, sun4d_disable_irq, BTFIXUPCALL_NORM); | |
575 | BTFIXUPSET_CALL(clear_clock_irq, sun4d_clear_clock_irq, BTFIXUPCALL_NORM); | |
576 | BTFIXUPSET_CALL(clear_profile_irq, sun4d_clear_profile_irq, BTFIXUPCALL_NORM); | |
577 | BTFIXUPSET_CALL(load_profile_irq, sun4d_load_profile_irq, BTFIXUPCALL_NORM); | |
1da177e4 LT |
578 | sparc_init_timers = sun4d_init_timers; |
579 | #ifdef CONFIG_SMP | |
580 | BTFIXUPSET_CALL(set_cpu_int, sun4d_set_cpu_int, BTFIXUPCALL_NORM); | |
581 | BTFIXUPSET_CALL(clear_cpu_int, sun4d_clear_ipi, BTFIXUPCALL_NOP); | |
582 | BTFIXUPSET_CALL(set_irq_udt, sun4d_set_udt, BTFIXUPCALL_NOP); | |
583 | #endif | |
584 | /* Cannot enable interrupts until OBP ticker is disabled. */ | |
585 | } |