1 /*
2 * System-specific setup, especially interrupts.
3 *
4 * This file is subject to the terms and conditions of the GNU General Public
5 * License. See the file "COPYING" in the main directory of this archive
6 * for more details.
7 *
8 * Copyright (C) 1998 Harald Koerfgen
9 * Copyright (C) 2000, 2001, 2002, 2003, 2005 Maciej W. Rozycki
10 */
11 #include <linux/console.h>
12 #include <linux/init.h>
13 #include <linux/interrupt.h>
14 #include <linux/ioport.h>
15 #include <linux/module.h>
16 #include <linux/param.h>
17 #include <linux/sched.h>
18 #include <linux/spinlock.h>
19 #include <linux/types.h>
20 #include <linux/pm.h>
21 #include <linux/irq.h>
22
23 #include <asm/bootinfo.h>
24 #include <asm/cpu.h>
25 #include <asm/cpu-features.h>
26 #include <asm/irq.h>
27 #include <asm/irq_cpu.h>
28 #include <asm/mipsregs.h>
29 #include <asm/reboot.h>
30 #include <asm/time.h>
31 #include <asm/traps.h>
32 #include <asm/wbflush.h>
33
34 #include <asm/dec/interrupts.h>
35 #include <asm/dec/ioasic.h>
36 #include <asm/dec/ioasic_addrs.h>
37 #include <asm/dec/ioasic_ints.h>
38 #include <asm/dec/kn01.h>
39 #include <asm/dec/kn02.h>
40 #include <asm/dec/kn02ba.h>
41 #include <asm/dec/kn02ca.h>
42 #include <asm/dec/kn03.h>
43 #include <asm/dec/kn230.h>
44 #include <asm/dec/system.h>
45
46
47 extern void dec_machine_restart(char *command);
48 extern void dec_machine_halt(void);
49 extern void dec_machine_power_off(void);
50 extern irqreturn_t dec_intr_halt(int irq, void *dev_id);
51
52 unsigned long dec_kn_slot_base, dec_kn_slot_size;
53
54 EXPORT_SYMBOL(dec_kn_slot_base);
55 EXPORT_SYMBOL(dec_kn_slot_size);
56
57 int dec_tc_bus;
58
59 DEFINE_SPINLOCK(ioasic_ssr_lock);
60
61 volatile u32 *ioasic_base;
62
63 EXPORT_SYMBOL(ioasic_base);
64
65 /*
66 * IRQ routing and priority tables. Priorites are set as follows:
67 *
68 * KN01 KN230 KN02 KN02-BA KN02-CA KN03
69 *
70 * MEMORY CPU CPU CPU ASIC CPU CPU
71 * RTC CPU CPU CPU ASIC CPU CPU
72 * DMA - - - ASIC ASIC ASIC
73 * SERIAL0 CPU CPU CSR ASIC ASIC ASIC
74 * SERIAL1 - - - ASIC - ASIC
75 * SCSI CPU CPU CSR ASIC ASIC ASIC
76 * ETHERNET CPU * CSR ASIC ASIC ASIC
77 * other - - - ASIC - -
78 * TC2 - - CSR CPU ASIC ASIC
79 * TC1 - - CSR CPU ASIC ASIC
80 * TC0 - - CSR CPU ASIC ASIC
81 * other - CPU - CPU ASIC ASIC
82 * other - - - - CPU CPU
83 *
84 * * -- shared with SCSI
85 */
86
87 int dec_interrupt[DEC_NR_INTS] = {
88 [0 ... DEC_NR_INTS - 1] = -1
89 };
90
91 EXPORT_SYMBOL(dec_interrupt);
92
93 int_ptr cpu_mask_nr_tbl[DEC_MAX_CPU_INTS][2] = {
94 { { .i = ~0 }, { .p = dec_intr_unimplemented } },
95 };
96 int_ptr asic_mask_nr_tbl[DEC_MAX_ASIC_INTS][2] = {
97 { { .i = ~0 }, { .p = asic_intr_unimplemented } },
98 };
99 int cpu_fpu_mask = DEC_CPU_IRQ_MASK(DEC_CPU_INR_FPU);
100
101 static struct irqaction ioirq = {
102 .handler = no_action,
103 .name = "cascade",
104 .flags = IRQF_NO_THREAD,
105 };
106 static struct irqaction fpuirq = {
107 .handler = no_action,
108 .name = "fpu",
109 .flags = IRQF_NO_THREAD,
110 };
111
112 static struct irqaction busirq = {
113 .name = "bus error",
114 .flags = IRQF_NO_THREAD,
115 };
116
117 static struct irqaction haltirq = {
118 .handler = dec_intr_halt,
119 .name = "halt",
120 .flags = IRQF_NO_THREAD,
121 };
122
123
124 /*
125 * Bus error (DBE/IBE exceptions and bus interrupts) handling setup.
126 */
dec_be_init(void)127 static void __init dec_be_init(void)
128 {
129 switch (mips_machtype) {
130 case MACH_DS23100: /* DS2100/DS3100 Pmin/Pmax */
131 board_be_handler = dec_kn01_be_handler;
132 busirq.handler = dec_kn01_be_interrupt;
133 busirq.flags |= IRQF_SHARED;
134 dec_kn01_be_init();
135 break;
136 case MACH_DS5000_1XX: /* DS5000/1xx 3min */
137 case MACH_DS5000_XX: /* DS5000/xx Maxine */
138 board_be_handler = dec_kn02xa_be_handler;
139 busirq.handler = dec_kn02xa_be_interrupt;
140 dec_kn02xa_be_init();
141 break;
142 case MACH_DS5000_200: /* DS5000/200 3max */
143 case MACH_DS5000_2X0: /* DS5000/240 3max+ */
144 case MACH_DS5900: /* DS5900 bigmax */
145 board_be_handler = dec_ecc_be_handler;
146 busirq.handler = dec_ecc_be_interrupt;
147 dec_ecc_be_init();
148 break;
149 }
150 }
151
plat_mem_setup(void)152 void __init plat_mem_setup(void)
153 {
154 board_be_init = dec_be_init;
155
156 wbflush_setup();
157
158 _machine_restart = dec_machine_restart;
159 _machine_halt = dec_machine_halt;
160 pm_power_off = dec_machine_power_off;
161
162 ioport_resource.start = ~0UL;
163 ioport_resource.end = 0UL;
164 }
165
166 /*
167 * Machine-specific initialisation for KN01, aka DS2100 (aka Pmin)
168 * or DS3100 (aka Pmax).
169 */
170 static int kn01_interrupt[DEC_NR_INTS] __initdata = {
171 [DEC_IRQ_CASCADE] = -1,
172 [DEC_IRQ_AB_RECV] = -1,
173 [DEC_IRQ_AB_XMIT] = -1,
174 [DEC_IRQ_DZ11] = DEC_CPU_IRQ_NR(KN01_CPU_INR_DZ11),
175 [DEC_IRQ_ASC] = -1,
176 [DEC_IRQ_FLOPPY] = -1,
177 [DEC_IRQ_FPU] = DEC_CPU_IRQ_NR(DEC_CPU_INR_FPU),
178 [DEC_IRQ_HALT] = -1,
179 [DEC_IRQ_ISDN] = -1,
180 [DEC_IRQ_LANCE] = DEC_CPU_IRQ_NR(KN01_CPU_INR_LANCE),
181 [DEC_IRQ_BUS] = DEC_CPU_IRQ_NR(KN01_CPU_INR_BUS),
182 [DEC_IRQ_PSU] = -1,
183 [DEC_IRQ_RTC] = DEC_CPU_IRQ_NR(KN01_CPU_INR_RTC),
184 [DEC_IRQ_SCC0] = -1,
185 [DEC_IRQ_SCC1] = -1,
186 [DEC_IRQ_SII] = DEC_CPU_IRQ_NR(KN01_CPU_INR_SII),
187 [DEC_IRQ_TC0] = -1,
188 [DEC_IRQ_TC1] = -1,
189 [DEC_IRQ_TC2] = -1,
190 [DEC_IRQ_TIMER] = -1,
191 [DEC_IRQ_VIDEO] = DEC_CPU_IRQ_NR(KN01_CPU_INR_VIDEO),
192 [DEC_IRQ_ASC_MERR] = -1,
193 [DEC_IRQ_ASC_ERR] = -1,
194 [DEC_IRQ_ASC_DMA] = -1,
195 [DEC_IRQ_FLOPPY_ERR] = -1,
196 [DEC_IRQ_ISDN_ERR] = -1,
197 [DEC_IRQ_ISDN_RXDMA] = -1,
198 [DEC_IRQ_ISDN_TXDMA] = -1,
199 [DEC_IRQ_LANCE_MERR] = -1,
200 [DEC_IRQ_SCC0A_RXERR] = -1,
201 [DEC_IRQ_SCC0A_RXDMA] = -1,
202 [DEC_IRQ_SCC0A_TXERR] = -1,
203 [DEC_IRQ_SCC0A_TXDMA] = -1,
204 [DEC_IRQ_AB_RXERR] = -1,
205 [DEC_IRQ_AB_RXDMA] = -1,
206 [DEC_IRQ_AB_TXERR] = -1,
207 [DEC_IRQ_AB_TXDMA] = -1,
208 [DEC_IRQ_SCC1A_RXERR] = -1,
209 [DEC_IRQ_SCC1A_RXDMA] = -1,
210 [DEC_IRQ_SCC1A_TXERR] = -1,
211 [DEC_IRQ_SCC1A_TXDMA] = -1,
212 };
213
214 static int_ptr kn01_cpu_mask_nr_tbl[][2] __initdata = {
215 { { .i = DEC_CPU_IRQ_MASK(KN01_CPU_INR_BUS) },
216 { .i = DEC_CPU_IRQ_NR(KN01_CPU_INR_BUS) } },
217 { { .i = DEC_CPU_IRQ_MASK(KN01_CPU_INR_RTC) },
218 { .i = DEC_CPU_IRQ_NR(KN01_CPU_INR_RTC) } },
219 { { .i = DEC_CPU_IRQ_MASK(KN01_CPU_INR_DZ11) },
220 { .i = DEC_CPU_IRQ_NR(KN01_CPU_INR_DZ11) } },
221 { { .i = DEC_CPU_IRQ_MASK(KN01_CPU_INR_SII) },
222 { .i = DEC_CPU_IRQ_NR(KN01_CPU_INR_SII) } },
223 { { .i = DEC_CPU_IRQ_MASK(KN01_CPU_INR_LANCE) },
224 { .i = DEC_CPU_IRQ_NR(KN01_CPU_INR_LANCE) } },
225 { { .i = DEC_CPU_IRQ_ALL },
226 { .p = cpu_all_int } },
227 };
228
dec_init_kn01(void)229 static void __init dec_init_kn01(void)
230 {
231 /* IRQ routing. */
232 memcpy(&dec_interrupt, &kn01_interrupt,
233 sizeof(kn01_interrupt));
234
235 /* CPU IRQ priorities. */
236 memcpy(&cpu_mask_nr_tbl, &kn01_cpu_mask_nr_tbl,
237 sizeof(kn01_cpu_mask_nr_tbl));
238
239 mips_cpu_irq_init();
240
241 } /* dec_init_kn01 */
242
243
244 /*
245 * Machine-specific initialisation for KN230, aka DS5100, aka MIPSmate.
246 */
247 static int kn230_interrupt[DEC_NR_INTS] __initdata = {
248 [DEC_IRQ_CASCADE] = -1,
249 [DEC_IRQ_AB_RECV] = -1,
250 [DEC_IRQ_AB_XMIT] = -1,
251 [DEC_IRQ_DZ11] = DEC_CPU_IRQ_NR(KN230_CPU_INR_DZ11),
252 [DEC_IRQ_ASC] = -1,
253 [DEC_IRQ_FLOPPY] = -1,
254 [DEC_IRQ_FPU] = DEC_CPU_IRQ_NR(DEC_CPU_INR_FPU),
255 [DEC_IRQ_HALT] = DEC_CPU_IRQ_NR(KN230_CPU_INR_HALT),
256 [DEC_IRQ_ISDN] = -1,
257 [DEC_IRQ_LANCE] = DEC_CPU_IRQ_NR(KN230_CPU_INR_LANCE),
258 [DEC_IRQ_BUS] = DEC_CPU_IRQ_NR(KN230_CPU_INR_BUS),
259 [DEC_IRQ_PSU] = -1,
260 [DEC_IRQ_RTC] = DEC_CPU_IRQ_NR(KN230_CPU_INR_RTC),
261 [DEC_IRQ_SCC0] = -1,
262 [DEC_IRQ_SCC1] = -1,
263 [DEC_IRQ_SII] = DEC_CPU_IRQ_NR(KN230_CPU_INR_SII),
264 [DEC_IRQ_TC0] = -1,
265 [DEC_IRQ_TC1] = -1,
266 [DEC_IRQ_TC2] = -1,
267 [DEC_IRQ_TIMER] = -1,
268 [DEC_IRQ_VIDEO] = -1,
269 [DEC_IRQ_ASC_MERR] = -1,
270 [DEC_IRQ_ASC_ERR] = -1,
271 [DEC_IRQ_ASC_DMA] = -1,
272 [DEC_IRQ_FLOPPY_ERR] = -1,
273 [DEC_IRQ_ISDN_ERR] = -1,
274 [DEC_IRQ_ISDN_RXDMA] = -1,
275 [DEC_IRQ_ISDN_TXDMA] = -1,
276 [DEC_IRQ_LANCE_MERR] = -1,
277 [DEC_IRQ_SCC0A_RXERR] = -1,
278 [DEC_IRQ_SCC0A_RXDMA] = -1,
279 [DEC_IRQ_SCC0A_TXERR] = -1,
280 [DEC_IRQ_SCC0A_TXDMA] = -1,
281 [DEC_IRQ_AB_RXERR] = -1,
282 [DEC_IRQ_AB_RXDMA] = -1,
283 [DEC_IRQ_AB_TXERR] = -1,
284 [DEC_IRQ_AB_TXDMA] = -1,
285 [DEC_IRQ_SCC1A_RXERR] = -1,
286 [DEC_IRQ_SCC1A_RXDMA] = -1,
287 [DEC_IRQ_SCC1A_TXERR] = -1,
288 [DEC_IRQ_SCC1A_TXDMA] = -1,
289 };
290
291 static int_ptr kn230_cpu_mask_nr_tbl[][2] __initdata = {
292 { { .i = DEC_CPU_IRQ_MASK(KN230_CPU_INR_BUS) },
293 { .i = DEC_CPU_IRQ_NR(KN230_CPU_INR_BUS) } },
294 { { .i = DEC_CPU_IRQ_MASK(KN230_CPU_INR_RTC) },
295 { .i = DEC_CPU_IRQ_NR(KN230_CPU_INR_RTC) } },
296 { { .i = DEC_CPU_IRQ_MASK(KN230_CPU_INR_DZ11) },
297 { .i = DEC_CPU_IRQ_NR(KN230_CPU_INR_DZ11) } },
298 { { .i = DEC_CPU_IRQ_MASK(KN230_CPU_INR_SII) },
299 { .i = DEC_CPU_IRQ_NR(KN230_CPU_INR_SII) } },
300 { { .i = DEC_CPU_IRQ_ALL },
301 { .p = cpu_all_int } },
302 };
303
dec_init_kn230(void)304 static void __init dec_init_kn230(void)
305 {
306 /* IRQ routing. */
307 memcpy(&dec_interrupt, &kn230_interrupt,
308 sizeof(kn230_interrupt));
309
310 /* CPU IRQ priorities. */
311 memcpy(&cpu_mask_nr_tbl, &kn230_cpu_mask_nr_tbl,
312 sizeof(kn230_cpu_mask_nr_tbl));
313
314 mips_cpu_irq_init();
315
316 } /* dec_init_kn230 */
317
318
319 /*
320 * Machine-specific initialisation for KN02, aka DS5000/200, aka 3max.
321 */
322 static int kn02_interrupt[DEC_NR_INTS] __initdata = {
323 [DEC_IRQ_CASCADE] = DEC_CPU_IRQ_NR(KN02_CPU_INR_CASCADE),
324 [DEC_IRQ_AB_RECV] = -1,
325 [DEC_IRQ_AB_XMIT] = -1,
326 [DEC_IRQ_DZ11] = KN02_IRQ_NR(KN02_CSR_INR_DZ11),
327 [DEC_IRQ_ASC] = KN02_IRQ_NR(KN02_CSR_INR_ASC),
328 [DEC_IRQ_FLOPPY] = -1,
329 [DEC_IRQ_FPU] = DEC_CPU_IRQ_NR(DEC_CPU_INR_FPU),
330 [DEC_IRQ_HALT] = -1,
331 [DEC_IRQ_ISDN] = -1,
332 [DEC_IRQ_LANCE] = KN02_IRQ_NR(KN02_CSR_INR_LANCE),
333 [DEC_IRQ_BUS] = DEC_CPU_IRQ_NR(KN02_CPU_INR_BUS),
334 [DEC_IRQ_PSU] = -1,
335 [DEC_IRQ_RTC] = DEC_CPU_IRQ_NR(KN02_CPU_INR_RTC),
336 [DEC_IRQ_SCC0] = -1,
337 [DEC_IRQ_SCC1] = -1,
338 [DEC_IRQ_SII] = -1,
339 [DEC_IRQ_TC0] = KN02_IRQ_NR(KN02_CSR_INR_TC0),
340 [DEC_IRQ_TC1] = KN02_IRQ_NR(KN02_CSR_INR_TC1),
341 [DEC_IRQ_TC2] = KN02_IRQ_NR(KN02_CSR_INR_TC2),
342 [DEC_IRQ_TIMER] = -1,
343 [DEC_IRQ_VIDEO] = -1,
344 [DEC_IRQ_ASC_MERR] = -1,
345 [DEC_IRQ_ASC_ERR] = -1,
346 [DEC_IRQ_ASC_DMA] = -1,
347 [DEC_IRQ_FLOPPY_ERR] = -1,
348 [DEC_IRQ_ISDN_ERR] = -1,
349 [DEC_IRQ_ISDN_RXDMA] = -1,
350 [DEC_IRQ_ISDN_TXDMA] = -1,
351 [DEC_IRQ_LANCE_MERR] = -1,
352 [DEC_IRQ_SCC0A_RXERR] = -1,
353 [DEC_IRQ_SCC0A_RXDMA] = -1,
354 [DEC_IRQ_SCC0A_TXERR] = -1,
355 [DEC_IRQ_SCC0A_TXDMA] = -1,
356 [DEC_IRQ_AB_RXERR] = -1,
357 [DEC_IRQ_AB_RXDMA] = -1,
358 [DEC_IRQ_AB_TXERR] = -1,
359 [DEC_IRQ_AB_TXDMA] = -1,
360 [DEC_IRQ_SCC1A_RXERR] = -1,
361 [DEC_IRQ_SCC1A_RXDMA] = -1,
362 [DEC_IRQ_SCC1A_TXERR] = -1,
363 [DEC_IRQ_SCC1A_TXDMA] = -1,
364 };
365
366 static int_ptr kn02_cpu_mask_nr_tbl[][2] __initdata = {
367 { { .i = DEC_CPU_IRQ_MASK(KN02_CPU_INR_BUS) },
368 { .i = DEC_CPU_IRQ_NR(KN02_CPU_INR_BUS) } },
369 { { .i = DEC_CPU_IRQ_MASK(KN02_CPU_INR_RTC) },
370 { .i = DEC_CPU_IRQ_NR(KN02_CPU_INR_RTC) } },
371 { { .i = DEC_CPU_IRQ_MASK(KN02_CPU_INR_CASCADE) },
372 { .p = kn02_io_int } },
373 { { .i = DEC_CPU_IRQ_ALL },
374 { .p = cpu_all_int } },
375 };
376
377 static int_ptr kn02_asic_mask_nr_tbl[][2] __initdata = {
378 { { .i = KN02_IRQ_MASK(KN02_CSR_INR_DZ11) },
379 { .i = KN02_IRQ_NR(KN02_CSR_INR_DZ11) } },
380 { { .i = KN02_IRQ_MASK(KN02_CSR_INR_ASC) },
381 { .i = KN02_IRQ_NR(KN02_CSR_INR_ASC) } },
382 { { .i = KN02_IRQ_MASK(KN02_CSR_INR_LANCE) },
383 { .i = KN02_IRQ_NR(KN02_CSR_INR_LANCE) } },
384 { { .i = KN02_IRQ_MASK(KN02_CSR_INR_TC2) },
385 { .i = KN02_IRQ_NR(KN02_CSR_INR_TC2) } },
386 { { .i = KN02_IRQ_MASK(KN02_CSR_INR_TC1) },
387 { .i = KN02_IRQ_NR(KN02_CSR_INR_TC1) } },
388 { { .i = KN02_IRQ_MASK(KN02_CSR_INR_TC0) },
389 { .i = KN02_IRQ_NR(KN02_CSR_INR_TC0) } },
390 { { .i = KN02_IRQ_ALL },
391 { .p = kn02_all_int } },
392 };
393
dec_init_kn02(void)394 static void __init dec_init_kn02(void)
395 {
396 /* IRQ routing. */
397 memcpy(&dec_interrupt, &kn02_interrupt,
398 sizeof(kn02_interrupt));
399
400 /* CPU IRQ priorities. */
401 memcpy(&cpu_mask_nr_tbl, &kn02_cpu_mask_nr_tbl,
402 sizeof(kn02_cpu_mask_nr_tbl));
403
404 /* KN02 CSR IRQ priorities. */
405 memcpy(&asic_mask_nr_tbl, &kn02_asic_mask_nr_tbl,
406 sizeof(kn02_asic_mask_nr_tbl));
407
408 mips_cpu_irq_init();
409 init_kn02_irqs(KN02_IRQ_BASE);
410
411 } /* dec_init_kn02 */
412
413
414 /*
415 * Machine-specific initialisation for KN02-BA, aka DS5000/1xx
416 * (xx = 20, 25, 33), aka 3min. Also applies to KN04(-BA), aka
417 * DS5000/150, aka 4min.
418 */
419 static int kn02ba_interrupt[DEC_NR_INTS] __initdata = {
420 [DEC_IRQ_CASCADE] = DEC_CPU_IRQ_NR(KN02BA_CPU_INR_CASCADE),
421 [DEC_IRQ_AB_RECV] = -1,
422 [DEC_IRQ_AB_XMIT] = -1,
423 [DEC_IRQ_DZ11] = -1,
424 [DEC_IRQ_ASC] = IO_IRQ_NR(KN02BA_IO_INR_ASC),
425 [DEC_IRQ_FLOPPY] = -1,
426 [DEC_IRQ_FPU] = DEC_CPU_IRQ_NR(DEC_CPU_INR_FPU),
427 [DEC_IRQ_HALT] = DEC_CPU_IRQ_NR(KN02BA_CPU_INR_HALT),
428 [DEC_IRQ_ISDN] = -1,
429 [DEC_IRQ_LANCE] = IO_IRQ_NR(KN02BA_IO_INR_LANCE),
430 [DEC_IRQ_BUS] = IO_IRQ_NR(KN02BA_IO_INR_BUS),
431 [DEC_IRQ_PSU] = IO_IRQ_NR(KN02BA_IO_INR_PSU),
432 [DEC_IRQ_RTC] = IO_IRQ_NR(KN02BA_IO_INR_RTC),
433 [DEC_IRQ_SCC0] = IO_IRQ_NR(KN02BA_IO_INR_SCC0),
434 [DEC_IRQ_SCC1] = IO_IRQ_NR(KN02BA_IO_INR_SCC1),
435 [DEC_IRQ_SII] = -1,
436 [DEC_IRQ_TC0] = DEC_CPU_IRQ_NR(KN02BA_CPU_INR_TC0),
437 [DEC_IRQ_TC1] = DEC_CPU_IRQ_NR(KN02BA_CPU_INR_TC1),
438 [DEC_IRQ_TC2] = DEC_CPU_IRQ_NR(KN02BA_CPU_INR_TC2),
439 [DEC_IRQ_TIMER] = -1,
440 [DEC_IRQ_VIDEO] = -1,
441 [DEC_IRQ_ASC_MERR] = IO_IRQ_NR(IO_INR_ASC_MERR),
442 [DEC_IRQ_ASC_ERR] = IO_IRQ_NR(IO_INR_ASC_ERR),
443 [DEC_IRQ_ASC_DMA] = IO_IRQ_NR(IO_INR_ASC_DMA),
444 [DEC_IRQ_FLOPPY_ERR] = -1,
445 [DEC_IRQ_ISDN_ERR] = -1,
446 [DEC_IRQ_ISDN_RXDMA] = -1,
447 [DEC_IRQ_ISDN_TXDMA] = -1,
448 [DEC_IRQ_LANCE_MERR] = IO_IRQ_NR(IO_INR_LANCE_MERR),
449 [DEC_IRQ_SCC0A_RXERR] = IO_IRQ_NR(IO_INR_SCC0A_RXERR),
450 [DEC_IRQ_SCC0A_RXDMA] = IO_IRQ_NR(IO_INR_SCC0A_RXDMA),
451 [DEC_IRQ_SCC0A_TXERR] = IO_IRQ_NR(IO_INR_SCC0A_TXERR),
452 [DEC_IRQ_SCC0A_TXDMA] = IO_IRQ_NR(IO_INR_SCC0A_TXDMA),
453 [DEC_IRQ_AB_RXERR] = -1,
454 [DEC_IRQ_AB_RXDMA] = -1,
455 [DEC_IRQ_AB_TXERR] = -1,
456 [DEC_IRQ_AB_TXDMA] = -1,
457 [DEC_IRQ_SCC1A_RXERR] = IO_IRQ_NR(IO_INR_SCC1A_RXERR),
458 [DEC_IRQ_SCC1A_RXDMA] = IO_IRQ_NR(IO_INR_SCC1A_RXDMA),
459 [DEC_IRQ_SCC1A_TXERR] = IO_IRQ_NR(IO_INR_SCC1A_TXERR),
460 [DEC_IRQ_SCC1A_TXDMA] = IO_IRQ_NR(IO_INR_SCC1A_TXDMA),
461 };
462
463 static int_ptr kn02ba_cpu_mask_nr_tbl[][2] __initdata = {
464 { { .i = DEC_CPU_IRQ_MASK(KN02BA_CPU_INR_CASCADE) },
465 { .p = kn02xa_io_int } },
466 { { .i = DEC_CPU_IRQ_MASK(KN02BA_CPU_INR_TC2) },
467 { .i = DEC_CPU_IRQ_NR(KN02BA_CPU_INR_TC2) } },
468 { { .i = DEC_CPU_IRQ_MASK(KN02BA_CPU_INR_TC1) },
469 { .i = DEC_CPU_IRQ_NR(KN02BA_CPU_INR_TC1) } },
470 { { .i = DEC_CPU_IRQ_MASK(KN02BA_CPU_INR_TC0) },
471 { .i = DEC_CPU_IRQ_NR(KN02BA_CPU_INR_TC0) } },
472 { { .i = DEC_CPU_IRQ_ALL },
473 { .p = cpu_all_int } },
474 };
475
476 static int_ptr kn02ba_asic_mask_nr_tbl[][2] __initdata = {
477 { { .i = IO_IRQ_MASK(KN02BA_IO_INR_BUS) },
478 { .i = IO_IRQ_NR(KN02BA_IO_INR_BUS) } },
479 { { .i = IO_IRQ_MASK(KN02BA_IO_INR_RTC) },
480 { .i = IO_IRQ_NR(KN02BA_IO_INR_RTC) } },
481 { { .i = IO_IRQ_DMA },
482 { .p = asic_dma_int } },
483 { { .i = IO_IRQ_MASK(KN02BA_IO_INR_SCC0) },
484 { .i = IO_IRQ_NR(KN02BA_IO_INR_SCC0) } },
485 { { .i = IO_IRQ_MASK(KN02BA_IO_INR_SCC1) },
486 { .i = IO_IRQ_NR(KN02BA_IO_INR_SCC1) } },
487 { { .i = IO_IRQ_MASK(KN02BA_IO_INR_ASC) },
488 { .i = IO_IRQ_NR(KN02BA_IO_INR_ASC) } },
489 { { .i = IO_IRQ_MASK(KN02BA_IO_INR_LANCE) },
490 { .i = IO_IRQ_NR(KN02BA_IO_INR_LANCE) } },
491 { { .i = IO_IRQ_ALL },
492 { .p = asic_all_int } },
493 };
494
dec_init_kn02ba(void)495 static void __init dec_init_kn02ba(void)
496 {
497 /* IRQ routing. */
498 memcpy(&dec_interrupt, &kn02ba_interrupt,
499 sizeof(kn02ba_interrupt));
500
501 /* CPU IRQ priorities. */
502 memcpy(&cpu_mask_nr_tbl, &kn02ba_cpu_mask_nr_tbl,
503 sizeof(kn02ba_cpu_mask_nr_tbl));
504
505 /* I/O ASIC IRQ priorities. */
506 memcpy(&asic_mask_nr_tbl, &kn02ba_asic_mask_nr_tbl,
507 sizeof(kn02ba_asic_mask_nr_tbl));
508
509 mips_cpu_irq_init();
510 init_ioasic_irqs(IO_IRQ_BASE);
511
512 } /* dec_init_kn02ba */
513
514
515 /*
516 * Machine-specific initialisation for KN02-CA, aka DS5000/xx,
517 * (xx = 20, 25, 33), aka MAXine. Also applies to KN04(-CA), aka
518 * DS5000/50, aka 4MAXine.
519 */
520 static int kn02ca_interrupt[DEC_NR_INTS] __initdata = {
521 [DEC_IRQ_CASCADE] = DEC_CPU_IRQ_NR(KN02CA_CPU_INR_CASCADE),
522 [DEC_IRQ_AB_RECV] = IO_IRQ_NR(KN02CA_IO_INR_AB_RECV),
523 [DEC_IRQ_AB_XMIT] = IO_IRQ_NR(KN02CA_IO_INR_AB_XMIT),
524 [DEC_IRQ_DZ11] = -1,
525 [DEC_IRQ_ASC] = IO_IRQ_NR(KN02CA_IO_INR_ASC),
526 [DEC_IRQ_FLOPPY] = IO_IRQ_NR(KN02CA_IO_INR_FLOPPY),
527 [DEC_IRQ_FPU] = DEC_CPU_IRQ_NR(DEC_CPU_INR_FPU),
528 [DEC_IRQ_HALT] = DEC_CPU_IRQ_NR(KN02CA_CPU_INR_HALT),
529 [DEC_IRQ_ISDN] = IO_IRQ_NR(KN02CA_IO_INR_ISDN),
530 [DEC_IRQ_LANCE] = IO_IRQ_NR(KN02CA_IO_INR_LANCE),
531 [DEC_IRQ_BUS] = DEC_CPU_IRQ_NR(KN02CA_CPU_INR_BUS),
532 [DEC_IRQ_PSU] = -1,
533 [DEC_IRQ_RTC] = DEC_CPU_IRQ_NR(KN02CA_CPU_INR_RTC),
534 [DEC_IRQ_SCC0] = IO_IRQ_NR(KN02CA_IO_INR_SCC0),
535 [DEC_IRQ_SCC1] = -1,
536 [DEC_IRQ_SII] = -1,
537 [DEC_IRQ_TC0] = IO_IRQ_NR(KN02CA_IO_INR_TC0),
538 [DEC_IRQ_TC1] = IO_IRQ_NR(KN02CA_IO_INR_TC1),
539 [DEC_IRQ_TC2] = -1,
540 [DEC_IRQ_TIMER] = DEC_CPU_IRQ_NR(KN02CA_CPU_INR_TIMER),
541 [DEC_IRQ_VIDEO] = IO_IRQ_NR(KN02CA_IO_INR_VIDEO),
542 [DEC_IRQ_ASC_MERR] = IO_IRQ_NR(IO_INR_ASC_MERR),
543 [DEC_IRQ_ASC_ERR] = IO_IRQ_NR(IO_INR_ASC_ERR),
544 [DEC_IRQ_ASC_DMA] = IO_IRQ_NR(IO_INR_ASC_DMA),
545 [DEC_IRQ_FLOPPY_ERR] = IO_IRQ_NR(IO_INR_FLOPPY_ERR),
546 [DEC_IRQ_ISDN_ERR] = IO_IRQ_NR(IO_INR_ISDN_ERR),
547 [DEC_IRQ_ISDN_RXDMA] = IO_IRQ_NR(IO_INR_ISDN_RXDMA),
548 [DEC_IRQ_ISDN_TXDMA] = IO_IRQ_NR(IO_INR_ISDN_TXDMA),
549 [DEC_IRQ_LANCE_MERR] = IO_IRQ_NR(IO_INR_LANCE_MERR),
550 [DEC_IRQ_SCC0A_RXERR] = IO_IRQ_NR(IO_INR_SCC0A_RXERR),
551 [DEC_IRQ_SCC0A_RXDMA] = IO_IRQ_NR(IO_INR_SCC0A_RXDMA),
552 [DEC_IRQ_SCC0A_TXERR] = IO_IRQ_NR(IO_INR_SCC0A_TXERR),
553 [DEC_IRQ_SCC0A_TXDMA] = IO_IRQ_NR(IO_INR_SCC0A_TXDMA),
554 [DEC_IRQ_AB_RXERR] = IO_IRQ_NR(IO_INR_AB_RXERR),
555 [DEC_IRQ_AB_RXDMA] = IO_IRQ_NR(IO_INR_AB_RXDMA),
556 [DEC_IRQ_AB_TXERR] = IO_IRQ_NR(IO_INR_AB_TXERR),
557 [DEC_IRQ_AB_TXDMA] = IO_IRQ_NR(IO_INR_AB_TXDMA),
558 [DEC_IRQ_SCC1A_RXERR] = -1,
559 [DEC_IRQ_SCC1A_RXDMA] = -1,
560 [DEC_IRQ_SCC1A_TXERR] = -1,
561 [DEC_IRQ_SCC1A_TXDMA] = -1,
562 };
563
564 static int_ptr kn02ca_cpu_mask_nr_tbl[][2] __initdata = {
565 { { .i = DEC_CPU_IRQ_MASK(KN02CA_CPU_INR_BUS) },
566 { .i = DEC_CPU_IRQ_NR(KN02CA_CPU_INR_BUS) } },
567 { { .i = DEC_CPU_IRQ_MASK(KN02CA_CPU_INR_RTC) },
568 { .i = DEC_CPU_IRQ_NR(KN02CA_CPU_INR_RTC) } },
569 { { .i = DEC_CPU_IRQ_MASK(KN02CA_CPU_INR_CASCADE) },
570 { .p = kn02xa_io_int } },
571 { { .i = DEC_CPU_IRQ_ALL },
572 { .p = cpu_all_int } },
573 };
574
575 static int_ptr kn02ca_asic_mask_nr_tbl[][2] __initdata = {
576 { { .i = IO_IRQ_DMA },
577 { .p = asic_dma_int } },
578 { { .i = IO_IRQ_MASK(KN02CA_IO_INR_SCC0) },
579 { .i = IO_IRQ_NR(KN02CA_IO_INR_SCC0) } },
580 { { .i = IO_IRQ_MASK(KN02CA_IO_INR_ASC) },
581 { .i = IO_IRQ_NR(KN02CA_IO_INR_ASC) } },
582 { { .i = IO_IRQ_MASK(KN02CA_IO_INR_LANCE) },
583 { .i = IO_IRQ_NR(KN02CA_IO_INR_LANCE) } },
584 { { .i = IO_IRQ_MASK(KN02CA_IO_INR_TC1) },
585 { .i = IO_IRQ_NR(KN02CA_IO_INR_TC1) } },
586 { { .i = IO_IRQ_MASK(KN02CA_IO_INR_TC0) },
587 { .i = IO_IRQ_NR(KN02CA_IO_INR_TC0) } },
588 { { .i = IO_IRQ_ALL },
589 { .p = asic_all_int } },
590 };
591
dec_init_kn02ca(void)592 static void __init dec_init_kn02ca(void)
593 {
594 /* IRQ routing. */
595 memcpy(&dec_interrupt, &kn02ca_interrupt,
596 sizeof(kn02ca_interrupt));
597
598 /* CPU IRQ priorities. */
599 memcpy(&cpu_mask_nr_tbl, &kn02ca_cpu_mask_nr_tbl,
600 sizeof(kn02ca_cpu_mask_nr_tbl));
601
602 /* I/O ASIC IRQ priorities. */
603 memcpy(&asic_mask_nr_tbl, &kn02ca_asic_mask_nr_tbl,
604 sizeof(kn02ca_asic_mask_nr_tbl));
605
606 mips_cpu_irq_init();
607 init_ioasic_irqs(IO_IRQ_BASE);
608
609 } /* dec_init_kn02ca */
610
611
612 /*
613 * Machine-specific initialisation for KN03, aka DS5000/240,
614 * aka 3max+ and DS5900, aka BIGmax. Also applies to KN05, aka
615 * DS5000/260, aka 4max+ and DS5900/260.
616 */
617 static int kn03_interrupt[DEC_NR_INTS] __initdata = {
618 [DEC_IRQ_CASCADE] = DEC_CPU_IRQ_NR(KN03_CPU_INR_CASCADE),
619 [DEC_IRQ_AB_RECV] = -1,
620 [DEC_IRQ_AB_XMIT] = -1,
621 [DEC_IRQ_DZ11] = -1,
622 [DEC_IRQ_ASC] = IO_IRQ_NR(KN03_IO_INR_ASC),
623 [DEC_IRQ_FLOPPY] = -1,
624 [DEC_IRQ_FPU] = DEC_CPU_IRQ_NR(DEC_CPU_INR_FPU),
625 [DEC_IRQ_HALT] = DEC_CPU_IRQ_NR(KN03_CPU_INR_HALT),
626 [DEC_IRQ_ISDN] = -1,
627 [DEC_IRQ_LANCE] = IO_IRQ_NR(KN03_IO_INR_LANCE),
628 [DEC_IRQ_BUS] = DEC_CPU_IRQ_NR(KN03_CPU_INR_BUS),
629 [DEC_IRQ_PSU] = IO_IRQ_NR(KN03_IO_INR_PSU),
630 [DEC_IRQ_RTC] = DEC_CPU_IRQ_NR(KN03_CPU_INR_RTC),
631 [DEC_IRQ_SCC0] = IO_IRQ_NR(KN03_IO_INR_SCC0),
632 [DEC_IRQ_SCC1] = IO_IRQ_NR(KN03_IO_INR_SCC1),
633 [DEC_IRQ_SII] = -1,
634 [DEC_IRQ_TC0] = IO_IRQ_NR(KN03_IO_INR_TC0),
635 [DEC_IRQ_TC1] = IO_IRQ_NR(KN03_IO_INR_TC1),
636 [DEC_IRQ_TC2] = IO_IRQ_NR(KN03_IO_INR_TC2),
637 [DEC_IRQ_TIMER] = -1,
638 [DEC_IRQ_VIDEO] = -1,
639 [DEC_IRQ_ASC_MERR] = IO_IRQ_NR(IO_INR_ASC_MERR),
640 [DEC_IRQ_ASC_ERR] = IO_IRQ_NR(IO_INR_ASC_ERR),
641 [DEC_IRQ_ASC_DMA] = IO_IRQ_NR(IO_INR_ASC_DMA),
642 [DEC_IRQ_FLOPPY_ERR] = -1,
643 [DEC_IRQ_ISDN_ERR] = -1,
644 [DEC_IRQ_ISDN_RXDMA] = -1,
645 [DEC_IRQ_ISDN_TXDMA] = -1,
646 [DEC_IRQ_LANCE_MERR] = IO_IRQ_NR(IO_INR_LANCE_MERR),
647 [DEC_IRQ_SCC0A_RXERR] = IO_IRQ_NR(IO_INR_SCC0A_RXERR),
648 [DEC_IRQ_SCC0A_RXDMA] = IO_IRQ_NR(IO_INR_SCC0A_RXDMA),
649 [DEC_IRQ_SCC0A_TXERR] = IO_IRQ_NR(IO_INR_SCC0A_TXERR),
650 [DEC_IRQ_SCC0A_TXDMA] = IO_IRQ_NR(IO_INR_SCC0A_TXDMA),
651 [DEC_IRQ_AB_RXERR] = -1,
652 [DEC_IRQ_AB_RXDMA] = -1,
653 [DEC_IRQ_AB_TXERR] = -1,
654 [DEC_IRQ_AB_TXDMA] = -1,
655 [DEC_IRQ_SCC1A_RXERR] = IO_IRQ_NR(IO_INR_SCC1A_RXERR),
656 [DEC_IRQ_SCC1A_RXDMA] = IO_IRQ_NR(IO_INR_SCC1A_RXDMA),
657 [DEC_IRQ_SCC1A_TXERR] = IO_IRQ_NR(IO_INR_SCC1A_TXERR),
658 [DEC_IRQ_SCC1A_TXDMA] = IO_IRQ_NR(IO_INR_SCC1A_TXDMA),
659 };
660
661 static int_ptr kn03_cpu_mask_nr_tbl[][2] __initdata = {
662 { { .i = DEC_CPU_IRQ_MASK(KN03_CPU_INR_BUS) },
663 { .i = DEC_CPU_IRQ_NR(KN03_CPU_INR_BUS) } },
664 { { .i = DEC_CPU_IRQ_MASK(KN03_CPU_INR_RTC) },
665 { .i = DEC_CPU_IRQ_NR(KN03_CPU_INR_RTC) } },
666 { { .i = DEC_CPU_IRQ_MASK(KN03_CPU_INR_CASCADE) },
667 { .p = kn03_io_int } },
668 { { .i = DEC_CPU_IRQ_ALL },
669 { .p = cpu_all_int } },
670 };
671
672 static int_ptr kn03_asic_mask_nr_tbl[][2] __initdata = {
673 { { .i = IO_IRQ_DMA },
674 { .p = asic_dma_int } },
675 { { .i = IO_IRQ_MASK(KN03_IO_INR_SCC0) },
676 { .i = IO_IRQ_NR(KN03_IO_INR_SCC0) } },
677 { { .i = IO_IRQ_MASK(KN03_IO_INR_SCC1) },
678 { .i = IO_IRQ_NR(KN03_IO_INR_SCC1) } },
679 { { .i = IO_IRQ_MASK(KN03_IO_INR_ASC) },
680 { .i = IO_IRQ_NR(KN03_IO_INR_ASC) } },
681 { { .i = IO_IRQ_MASK(KN03_IO_INR_LANCE) },
682 { .i = IO_IRQ_NR(KN03_IO_INR_LANCE) } },
683 { { .i = IO_IRQ_MASK(KN03_IO_INR_TC2) },
684 { .i = IO_IRQ_NR(KN03_IO_INR_TC2) } },
685 { { .i = IO_IRQ_MASK(KN03_IO_INR_TC1) },
686 { .i = IO_IRQ_NR(KN03_IO_INR_TC1) } },
687 { { .i = IO_IRQ_MASK(KN03_IO_INR_TC0) },
688 { .i = IO_IRQ_NR(KN03_IO_INR_TC0) } },
689 { { .i = IO_IRQ_ALL },
690 { .p = asic_all_int } },
691 };
692
dec_init_kn03(void)693 static void __init dec_init_kn03(void)
694 {
695 /* IRQ routing. */
696 memcpy(&dec_interrupt, &kn03_interrupt,
697 sizeof(kn03_interrupt));
698
699 /* CPU IRQ priorities. */
700 memcpy(&cpu_mask_nr_tbl, &kn03_cpu_mask_nr_tbl,
701 sizeof(kn03_cpu_mask_nr_tbl));
702
703 /* I/O ASIC IRQ priorities. */
704 memcpy(&asic_mask_nr_tbl, &kn03_asic_mask_nr_tbl,
705 sizeof(kn03_asic_mask_nr_tbl));
706
707 mips_cpu_irq_init();
708 init_ioasic_irqs(IO_IRQ_BASE);
709
710 } /* dec_init_kn03 */
711
712
arch_init_irq(void)713 void __init arch_init_irq(void)
714 {
715 switch (mips_machtype) {
716 case MACH_DS23100: /* DS2100/DS3100 Pmin/Pmax */
717 dec_init_kn01();
718 break;
719 case MACH_DS5100: /* DS5100 MIPSmate */
720 dec_init_kn230();
721 break;
722 case MACH_DS5000_200: /* DS5000/200 3max */
723 dec_init_kn02();
724 break;
725 case MACH_DS5000_1XX: /* DS5000/1xx 3min */
726 dec_init_kn02ba();
727 break;
728 case MACH_DS5000_2X0: /* DS5000/240 3max+ */
729 case MACH_DS5900: /* DS5900 bigmax */
730 dec_init_kn03();
731 break;
732 case MACH_DS5000_XX: /* Personal DS5000/xx */
733 dec_init_kn02ca();
734 break;
735 case MACH_DS5800: /* DS5800 Isis */
736 panic("Don't know how to set this up!");
737 break;
738 case MACH_DS5400: /* DS5400 MIPSfair */
739 panic("Don't know how to set this up!");
740 break;
741 case MACH_DS5500: /* DS5500 MIPSfair-2 */
742 panic("Don't know how to set this up!");
743 break;
744 }
745
746 /* Free the FPU interrupt if the exception is present. */
747 if (!cpu_has_nofpuex) {
748 cpu_fpu_mask = 0;
749 dec_interrupt[DEC_IRQ_FPU] = -1;
750 }
751
752 /* Register board interrupts: FPU and cascade. */
753 if (dec_interrupt[DEC_IRQ_FPU] >= 0)
754 setup_irq(dec_interrupt[DEC_IRQ_FPU], &fpuirq);
755 if (dec_interrupt[DEC_IRQ_CASCADE] >= 0)
756 setup_irq(dec_interrupt[DEC_IRQ_CASCADE], &ioirq);
757
758 /* Register the bus error interrupt. */
759 if (dec_interrupt[DEC_IRQ_BUS] >= 0 && busirq.handler)
760 setup_irq(dec_interrupt[DEC_IRQ_BUS], &busirq);
761
762 /* Register the HALT interrupt. */
763 if (dec_interrupt[DEC_IRQ_HALT] >= 0)
764 setup_irq(dec_interrupt[DEC_IRQ_HALT], &haltirq);
765 }
766
dec_irq_dispatch(unsigned int irq)767 asmlinkage unsigned int dec_irq_dispatch(unsigned int irq)
768 {
769 do_IRQ(irq);
770 return 0;
771 }
772