Loading...
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, 2020 Maciej W. Rozycki
10 */
11#include <linux/console.h>
12#include <linux/export.h>
13#include <linux/init.h>
14#include <linux/interrupt.h>
15#include <linux/ioport.h>
16#include <linux/irq.h>
17#include <linux/irqnr.h>
18#include <linux/memblock.h>
19#include <linux/param.h>
20#include <linux/percpu-defs.h>
21#include <linux/sched.h>
22#include <linux/spinlock.h>
23#include <linux/types.h>
24#include <linux/pm.h>
25
26#include <asm/addrspace.h>
27#include <asm/bootinfo.h>
28#include <asm/cpu.h>
29#include <asm/cpu-features.h>
30#include <asm/cpu-type.h>
31#include <asm/irq.h>
32#include <asm/irq_cpu.h>
33#include <asm/mipsregs.h>
34#include <asm/page.h>
35#include <asm/reboot.h>
36#include <asm/sections.h>
37#include <asm/time.h>
38#include <asm/traps.h>
39#include <asm/wbflush.h>
40
41#include <asm/dec/interrupts.h>
42#include <asm/dec/ioasic.h>
43#include <asm/dec/ioasic_addrs.h>
44#include <asm/dec/ioasic_ints.h>
45#include <asm/dec/kn01.h>
46#include <asm/dec/kn02.h>
47#include <asm/dec/kn02ba.h>
48#include <asm/dec/kn02ca.h>
49#include <asm/dec/kn03.h>
50#include <asm/dec/kn230.h>
51#include <asm/dec/system.h>
52
53
54extern void dec_machine_restart(char *command);
55extern void dec_machine_halt(void);
56extern void dec_machine_power_off(void);
57extern irqreturn_t dec_intr_halt(int irq, void *dev_id);
58
59unsigned long dec_kn_slot_base, dec_kn_slot_size;
60
61EXPORT_SYMBOL(dec_kn_slot_base);
62EXPORT_SYMBOL(dec_kn_slot_size);
63
64int dec_tc_bus;
65
66DEFINE_SPINLOCK(ioasic_ssr_lock);
67EXPORT_SYMBOL(ioasic_ssr_lock);
68
69volatile u32 *ioasic_base;
70
71EXPORT_SYMBOL(ioasic_base);
72
73/*
74 * IRQ routing and priority tables. Priorities are set as follows:
75 *
76 * KN01 KN230 KN02 KN02-BA KN02-CA KN03
77 *
78 * MEMORY CPU CPU CPU ASIC CPU CPU
79 * RTC CPU CPU CPU ASIC CPU CPU
80 * DMA - - - ASIC ASIC ASIC
81 * SERIAL0 CPU CPU CSR ASIC ASIC ASIC
82 * SERIAL1 - - - ASIC - ASIC
83 * SCSI CPU CPU CSR ASIC ASIC ASIC
84 * ETHERNET CPU * CSR ASIC ASIC ASIC
85 * other - - - ASIC - -
86 * TC2 - - CSR CPU ASIC ASIC
87 * TC1 - - CSR CPU ASIC ASIC
88 * TC0 - - CSR CPU ASIC ASIC
89 * other - CPU - CPU ASIC ASIC
90 * other - - - - CPU CPU
91 *
92 * * -- shared with SCSI
93 */
94
95int dec_interrupt[DEC_NR_INTS] = {
96 [0 ... DEC_NR_INTS - 1] = -1
97};
98
99EXPORT_SYMBOL(dec_interrupt);
100
101int_ptr cpu_mask_nr_tbl[DEC_MAX_CPU_INTS][2] = {
102 { { .i = ~0 }, { .p = dec_intr_unimplemented } },
103};
104int_ptr asic_mask_nr_tbl[DEC_MAX_ASIC_INTS][2] = {
105 { { .i = ~0 }, { .p = asic_intr_unimplemented } },
106};
107int cpu_fpu_mask = DEC_CPU_IRQ_MASK(DEC_CPU_INR_FPU);
108int *fpu_kstat_irq;
109
110static irq_handler_t busirq_handler;
111static unsigned int busirq_flags = IRQF_NO_THREAD;
112
113/*
114 * Bus error (DBE/IBE exceptions and bus interrupts) handling setup.
115 */
116static void __init dec_be_init(void)
117{
118 switch (mips_machtype) {
119 case MACH_DS23100: /* DS2100/DS3100 Pmin/Pmax */
120 mips_set_be_handler(dec_kn01_be_handler);
121 busirq_handler = dec_kn01_be_interrupt;
122 busirq_flags |= IRQF_SHARED;
123 dec_kn01_be_init();
124 break;
125 case MACH_DS5000_1XX: /* DS5000/1xx 3min */
126 case MACH_DS5000_XX: /* DS5000/xx Maxine */
127 mips_set_be_handler(dec_kn02xa_be_handler);
128 busirq_handler = dec_kn02xa_be_interrupt;
129 dec_kn02xa_be_init();
130 break;
131 case MACH_DS5000_200: /* DS5000/200 3max */
132 case MACH_DS5000_2X0: /* DS5000/240 3max+ */
133 case MACH_DS5900: /* DS5900 bigmax */
134 mips_set_be_handler(dec_ecc_be_handler);
135 busirq_handler = dec_ecc_be_interrupt;
136 dec_ecc_be_init();
137 break;
138 }
139}
140
141void __init plat_mem_setup(void)
142{
143 board_be_init = dec_be_init;
144
145 wbflush_setup();
146
147 _machine_restart = dec_machine_restart;
148 _machine_halt = dec_machine_halt;
149 pm_power_off = dec_machine_power_off;
150
151 ioport_resource.start = ~0UL;
152 ioport_resource.end = 0UL;
153
154 /* Stay away from the firmware working memory area for now. */
155 memblock_reserve(PHYS_OFFSET, __pa_symbol(&_text) - PHYS_OFFSET);
156}
157
158/*
159 * Machine-specific initialisation for KN01, aka DS2100 (aka Pmin)
160 * or DS3100 (aka Pmax).
161 */
162static int kn01_interrupt[DEC_NR_INTS] __initdata = {
163 [DEC_IRQ_CASCADE] = -1,
164 [DEC_IRQ_AB_RECV] = -1,
165 [DEC_IRQ_AB_XMIT] = -1,
166 [DEC_IRQ_DZ11] = DEC_CPU_IRQ_NR(KN01_CPU_INR_DZ11),
167 [DEC_IRQ_ASC] = -1,
168 [DEC_IRQ_FLOPPY] = -1,
169 [DEC_IRQ_FPU] = DEC_CPU_IRQ_NR(DEC_CPU_INR_FPU),
170 [DEC_IRQ_HALT] = -1,
171 [DEC_IRQ_ISDN] = -1,
172 [DEC_IRQ_LANCE] = DEC_CPU_IRQ_NR(KN01_CPU_INR_LANCE),
173 [DEC_IRQ_BUS] = DEC_CPU_IRQ_NR(KN01_CPU_INR_BUS),
174 [DEC_IRQ_PSU] = -1,
175 [DEC_IRQ_RTC] = DEC_CPU_IRQ_NR(KN01_CPU_INR_RTC),
176 [DEC_IRQ_SCC0] = -1,
177 [DEC_IRQ_SCC1] = -1,
178 [DEC_IRQ_SII] = DEC_CPU_IRQ_NR(KN01_CPU_INR_SII),
179 [DEC_IRQ_TC0] = -1,
180 [DEC_IRQ_TC1] = -1,
181 [DEC_IRQ_TC2] = -1,
182 [DEC_IRQ_TIMER] = -1,
183 [DEC_IRQ_VIDEO] = DEC_CPU_IRQ_NR(KN01_CPU_INR_VIDEO),
184 [DEC_IRQ_ASC_MERR] = -1,
185 [DEC_IRQ_ASC_ERR] = -1,
186 [DEC_IRQ_ASC_DMA] = -1,
187 [DEC_IRQ_FLOPPY_ERR] = -1,
188 [DEC_IRQ_ISDN_ERR] = -1,
189 [DEC_IRQ_ISDN_RXDMA] = -1,
190 [DEC_IRQ_ISDN_TXDMA] = -1,
191 [DEC_IRQ_LANCE_MERR] = -1,
192 [DEC_IRQ_SCC0A_RXERR] = -1,
193 [DEC_IRQ_SCC0A_RXDMA] = -1,
194 [DEC_IRQ_SCC0A_TXERR] = -1,
195 [DEC_IRQ_SCC0A_TXDMA] = -1,
196 [DEC_IRQ_AB_RXERR] = -1,
197 [DEC_IRQ_AB_RXDMA] = -1,
198 [DEC_IRQ_AB_TXERR] = -1,
199 [DEC_IRQ_AB_TXDMA] = -1,
200 [DEC_IRQ_SCC1A_RXERR] = -1,
201 [DEC_IRQ_SCC1A_RXDMA] = -1,
202 [DEC_IRQ_SCC1A_TXERR] = -1,
203 [DEC_IRQ_SCC1A_TXDMA] = -1,
204};
205
206static int_ptr kn01_cpu_mask_nr_tbl[][2] __initdata = {
207 { { .i = DEC_CPU_IRQ_MASK(KN01_CPU_INR_BUS) },
208 { .i = DEC_CPU_IRQ_NR(KN01_CPU_INR_BUS) } },
209 { { .i = DEC_CPU_IRQ_MASK(KN01_CPU_INR_RTC) },
210 { .i = DEC_CPU_IRQ_NR(KN01_CPU_INR_RTC) } },
211 { { .i = DEC_CPU_IRQ_MASK(KN01_CPU_INR_DZ11) },
212 { .i = DEC_CPU_IRQ_NR(KN01_CPU_INR_DZ11) } },
213 { { .i = DEC_CPU_IRQ_MASK(KN01_CPU_INR_SII) },
214 { .i = DEC_CPU_IRQ_NR(KN01_CPU_INR_SII) } },
215 { { .i = DEC_CPU_IRQ_MASK(KN01_CPU_INR_LANCE) },
216 { .i = DEC_CPU_IRQ_NR(KN01_CPU_INR_LANCE) } },
217 { { .i = DEC_CPU_IRQ_ALL },
218 { .p = cpu_all_int } },
219};
220
221static void __init dec_init_kn01(void)
222{
223 /* IRQ routing. */
224 memcpy(&dec_interrupt, &kn01_interrupt,
225 sizeof(kn01_interrupt));
226
227 /* CPU IRQ priorities. */
228 memcpy(&cpu_mask_nr_tbl, &kn01_cpu_mask_nr_tbl,
229 sizeof(kn01_cpu_mask_nr_tbl));
230
231 mips_cpu_irq_init();
232
233} /* dec_init_kn01 */
234
235
236/*
237 * Machine-specific initialisation for KN230, aka DS5100, aka MIPSmate.
238 */
239static int kn230_interrupt[DEC_NR_INTS] __initdata = {
240 [DEC_IRQ_CASCADE] = -1,
241 [DEC_IRQ_AB_RECV] = -1,
242 [DEC_IRQ_AB_XMIT] = -1,
243 [DEC_IRQ_DZ11] = DEC_CPU_IRQ_NR(KN230_CPU_INR_DZ11),
244 [DEC_IRQ_ASC] = -1,
245 [DEC_IRQ_FLOPPY] = -1,
246 [DEC_IRQ_FPU] = DEC_CPU_IRQ_NR(DEC_CPU_INR_FPU),
247 [DEC_IRQ_HALT] = DEC_CPU_IRQ_NR(KN230_CPU_INR_HALT),
248 [DEC_IRQ_ISDN] = -1,
249 [DEC_IRQ_LANCE] = DEC_CPU_IRQ_NR(KN230_CPU_INR_LANCE),
250 [DEC_IRQ_BUS] = DEC_CPU_IRQ_NR(KN230_CPU_INR_BUS),
251 [DEC_IRQ_PSU] = -1,
252 [DEC_IRQ_RTC] = DEC_CPU_IRQ_NR(KN230_CPU_INR_RTC),
253 [DEC_IRQ_SCC0] = -1,
254 [DEC_IRQ_SCC1] = -1,
255 [DEC_IRQ_SII] = DEC_CPU_IRQ_NR(KN230_CPU_INR_SII),
256 [DEC_IRQ_TC0] = -1,
257 [DEC_IRQ_TC1] = -1,
258 [DEC_IRQ_TC2] = -1,
259 [DEC_IRQ_TIMER] = -1,
260 [DEC_IRQ_VIDEO] = -1,
261 [DEC_IRQ_ASC_MERR] = -1,
262 [DEC_IRQ_ASC_ERR] = -1,
263 [DEC_IRQ_ASC_DMA] = -1,
264 [DEC_IRQ_FLOPPY_ERR] = -1,
265 [DEC_IRQ_ISDN_ERR] = -1,
266 [DEC_IRQ_ISDN_RXDMA] = -1,
267 [DEC_IRQ_ISDN_TXDMA] = -1,
268 [DEC_IRQ_LANCE_MERR] = -1,
269 [DEC_IRQ_SCC0A_RXERR] = -1,
270 [DEC_IRQ_SCC0A_RXDMA] = -1,
271 [DEC_IRQ_SCC0A_TXERR] = -1,
272 [DEC_IRQ_SCC0A_TXDMA] = -1,
273 [DEC_IRQ_AB_RXERR] = -1,
274 [DEC_IRQ_AB_RXDMA] = -1,
275 [DEC_IRQ_AB_TXERR] = -1,
276 [DEC_IRQ_AB_TXDMA] = -1,
277 [DEC_IRQ_SCC1A_RXERR] = -1,
278 [DEC_IRQ_SCC1A_RXDMA] = -1,
279 [DEC_IRQ_SCC1A_TXERR] = -1,
280 [DEC_IRQ_SCC1A_TXDMA] = -1,
281};
282
283static int_ptr kn230_cpu_mask_nr_tbl[][2] __initdata = {
284 { { .i = DEC_CPU_IRQ_MASK(KN230_CPU_INR_BUS) },
285 { .i = DEC_CPU_IRQ_NR(KN230_CPU_INR_BUS) } },
286 { { .i = DEC_CPU_IRQ_MASK(KN230_CPU_INR_RTC) },
287 { .i = DEC_CPU_IRQ_NR(KN230_CPU_INR_RTC) } },
288 { { .i = DEC_CPU_IRQ_MASK(KN230_CPU_INR_DZ11) },
289 { .i = DEC_CPU_IRQ_NR(KN230_CPU_INR_DZ11) } },
290 { { .i = DEC_CPU_IRQ_MASK(KN230_CPU_INR_SII) },
291 { .i = DEC_CPU_IRQ_NR(KN230_CPU_INR_SII) } },
292 { { .i = DEC_CPU_IRQ_ALL },
293 { .p = cpu_all_int } },
294};
295
296static void __init dec_init_kn230(void)
297{
298 /* IRQ routing. */
299 memcpy(&dec_interrupt, &kn230_interrupt,
300 sizeof(kn230_interrupt));
301
302 /* CPU IRQ priorities. */
303 memcpy(&cpu_mask_nr_tbl, &kn230_cpu_mask_nr_tbl,
304 sizeof(kn230_cpu_mask_nr_tbl));
305
306 mips_cpu_irq_init();
307
308} /* dec_init_kn230 */
309
310
311/*
312 * Machine-specific initialisation for KN02, aka DS5000/200, aka 3max.
313 */
314static int kn02_interrupt[DEC_NR_INTS] __initdata = {
315 [DEC_IRQ_CASCADE] = DEC_CPU_IRQ_NR(KN02_CPU_INR_CASCADE),
316 [DEC_IRQ_AB_RECV] = -1,
317 [DEC_IRQ_AB_XMIT] = -1,
318 [DEC_IRQ_DZ11] = KN02_IRQ_NR(KN02_CSR_INR_DZ11),
319 [DEC_IRQ_ASC] = KN02_IRQ_NR(KN02_CSR_INR_ASC),
320 [DEC_IRQ_FLOPPY] = -1,
321 [DEC_IRQ_FPU] = DEC_CPU_IRQ_NR(DEC_CPU_INR_FPU),
322 [DEC_IRQ_HALT] = -1,
323 [DEC_IRQ_ISDN] = -1,
324 [DEC_IRQ_LANCE] = KN02_IRQ_NR(KN02_CSR_INR_LANCE),
325 [DEC_IRQ_BUS] = DEC_CPU_IRQ_NR(KN02_CPU_INR_BUS),
326 [DEC_IRQ_PSU] = -1,
327 [DEC_IRQ_RTC] = DEC_CPU_IRQ_NR(KN02_CPU_INR_RTC),
328 [DEC_IRQ_SCC0] = -1,
329 [DEC_IRQ_SCC1] = -1,
330 [DEC_IRQ_SII] = -1,
331 [DEC_IRQ_TC0] = KN02_IRQ_NR(KN02_CSR_INR_TC0),
332 [DEC_IRQ_TC1] = KN02_IRQ_NR(KN02_CSR_INR_TC1),
333 [DEC_IRQ_TC2] = KN02_IRQ_NR(KN02_CSR_INR_TC2),
334 [DEC_IRQ_TIMER] = -1,
335 [DEC_IRQ_VIDEO] = -1,
336 [DEC_IRQ_ASC_MERR] = -1,
337 [DEC_IRQ_ASC_ERR] = -1,
338 [DEC_IRQ_ASC_DMA] = -1,
339 [DEC_IRQ_FLOPPY_ERR] = -1,
340 [DEC_IRQ_ISDN_ERR] = -1,
341 [DEC_IRQ_ISDN_RXDMA] = -1,
342 [DEC_IRQ_ISDN_TXDMA] = -1,
343 [DEC_IRQ_LANCE_MERR] = -1,
344 [DEC_IRQ_SCC0A_RXERR] = -1,
345 [DEC_IRQ_SCC0A_RXDMA] = -1,
346 [DEC_IRQ_SCC0A_TXERR] = -1,
347 [DEC_IRQ_SCC0A_TXDMA] = -1,
348 [DEC_IRQ_AB_RXERR] = -1,
349 [DEC_IRQ_AB_RXDMA] = -1,
350 [DEC_IRQ_AB_TXERR] = -1,
351 [DEC_IRQ_AB_TXDMA] = -1,
352 [DEC_IRQ_SCC1A_RXERR] = -1,
353 [DEC_IRQ_SCC1A_RXDMA] = -1,
354 [DEC_IRQ_SCC1A_TXERR] = -1,
355 [DEC_IRQ_SCC1A_TXDMA] = -1,
356};
357
358static int_ptr kn02_cpu_mask_nr_tbl[][2] __initdata = {
359 { { .i = DEC_CPU_IRQ_MASK(KN02_CPU_INR_BUS) },
360 { .i = DEC_CPU_IRQ_NR(KN02_CPU_INR_BUS) } },
361 { { .i = DEC_CPU_IRQ_MASK(KN02_CPU_INR_RTC) },
362 { .i = DEC_CPU_IRQ_NR(KN02_CPU_INR_RTC) } },
363 { { .i = DEC_CPU_IRQ_MASK(KN02_CPU_INR_CASCADE) },
364 { .p = kn02_io_int } },
365 { { .i = DEC_CPU_IRQ_ALL },
366 { .p = cpu_all_int } },
367};
368
369static int_ptr kn02_asic_mask_nr_tbl[][2] __initdata = {
370 { { .i = KN02_IRQ_MASK(KN02_CSR_INR_DZ11) },
371 { .i = KN02_IRQ_NR(KN02_CSR_INR_DZ11) } },
372 { { .i = KN02_IRQ_MASK(KN02_CSR_INR_ASC) },
373 { .i = KN02_IRQ_NR(KN02_CSR_INR_ASC) } },
374 { { .i = KN02_IRQ_MASK(KN02_CSR_INR_LANCE) },
375 { .i = KN02_IRQ_NR(KN02_CSR_INR_LANCE) } },
376 { { .i = KN02_IRQ_MASK(KN02_CSR_INR_TC2) },
377 { .i = KN02_IRQ_NR(KN02_CSR_INR_TC2) } },
378 { { .i = KN02_IRQ_MASK(KN02_CSR_INR_TC1) },
379 { .i = KN02_IRQ_NR(KN02_CSR_INR_TC1) } },
380 { { .i = KN02_IRQ_MASK(KN02_CSR_INR_TC0) },
381 { .i = KN02_IRQ_NR(KN02_CSR_INR_TC0) } },
382 { { .i = KN02_IRQ_ALL },
383 { .p = kn02_all_int } },
384};
385
386static void __init dec_init_kn02(void)
387{
388 /* IRQ routing. */
389 memcpy(&dec_interrupt, &kn02_interrupt,
390 sizeof(kn02_interrupt));
391
392 /* CPU IRQ priorities. */
393 memcpy(&cpu_mask_nr_tbl, &kn02_cpu_mask_nr_tbl,
394 sizeof(kn02_cpu_mask_nr_tbl));
395
396 /* KN02 CSR IRQ priorities. */
397 memcpy(&asic_mask_nr_tbl, &kn02_asic_mask_nr_tbl,
398 sizeof(kn02_asic_mask_nr_tbl));
399
400 mips_cpu_irq_init();
401 init_kn02_irqs(KN02_IRQ_BASE);
402
403} /* dec_init_kn02 */
404
405
406/*
407 * Machine-specific initialisation for KN02-BA, aka DS5000/1xx
408 * (xx = 20, 25, 33), aka 3min. Also applies to KN04(-BA), aka
409 * DS5000/150, aka 4min.
410 */
411static int kn02ba_interrupt[DEC_NR_INTS] __initdata = {
412 [DEC_IRQ_CASCADE] = DEC_CPU_IRQ_NR(KN02BA_CPU_INR_CASCADE),
413 [DEC_IRQ_AB_RECV] = -1,
414 [DEC_IRQ_AB_XMIT] = -1,
415 [DEC_IRQ_DZ11] = -1,
416 [DEC_IRQ_ASC] = IO_IRQ_NR(KN02BA_IO_INR_ASC),
417 [DEC_IRQ_FLOPPY] = -1,
418 [DEC_IRQ_FPU] = DEC_CPU_IRQ_NR(DEC_CPU_INR_FPU),
419 [DEC_IRQ_HALT] = DEC_CPU_IRQ_NR(KN02BA_CPU_INR_HALT),
420 [DEC_IRQ_ISDN] = -1,
421 [DEC_IRQ_LANCE] = IO_IRQ_NR(KN02BA_IO_INR_LANCE),
422 [DEC_IRQ_BUS] = IO_IRQ_NR(KN02BA_IO_INR_BUS),
423 [DEC_IRQ_PSU] = IO_IRQ_NR(KN02BA_IO_INR_PSU),
424 [DEC_IRQ_RTC] = IO_IRQ_NR(KN02BA_IO_INR_RTC),
425 [DEC_IRQ_SCC0] = IO_IRQ_NR(KN02BA_IO_INR_SCC0),
426 [DEC_IRQ_SCC1] = IO_IRQ_NR(KN02BA_IO_INR_SCC1),
427 [DEC_IRQ_SII] = -1,
428 [DEC_IRQ_TC0] = DEC_CPU_IRQ_NR(KN02BA_CPU_INR_TC0),
429 [DEC_IRQ_TC1] = DEC_CPU_IRQ_NR(KN02BA_CPU_INR_TC1),
430 [DEC_IRQ_TC2] = DEC_CPU_IRQ_NR(KN02BA_CPU_INR_TC2),
431 [DEC_IRQ_TIMER] = -1,
432 [DEC_IRQ_VIDEO] = -1,
433 [DEC_IRQ_ASC_MERR] = IO_IRQ_NR(IO_INR_ASC_MERR),
434 [DEC_IRQ_ASC_ERR] = IO_IRQ_NR(IO_INR_ASC_ERR),
435 [DEC_IRQ_ASC_DMA] = IO_IRQ_NR(IO_INR_ASC_DMA),
436 [DEC_IRQ_FLOPPY_ERR] = -1,
437 [DEC_IRQ_ISDN_ERR] = -1,
438 [DEC_IRQ_ISDN_RXDMA] = -1,
439 [DEC_IRQ_ISDN_TXDMA] = -1,
440 [DEC_IRQ_LANCE_MERR] = IO_IRQ_NR(IO_INR_LANCE_MERR),
441 [DEC_IRQ_SCC0A_RXERR] = IO_IRQ_NR(IO_INR_SCC0A_RXERR),
442 [DEC_IRQ_SCC0A_RXDMA] = IO_IRQ_NR(IO_INR_SCC0A_RXDMA),
443 [DEC_IRQ_SCC0A_TXERR] = IO_IRQ_NR(IO_INR_SCC0A_TXERR),
444 [DEC_IRQ_SCC0A_TXDMA] = IO_IRQ_NR(IO_INR_SCC0A_TXDMA),
445 [DEC_IRQ_AB_RXERR] = -1,
446 [DEC_IRQ_AB_RXDMA] = -1,
447 [DEC_IRQ_AB_TXERR] = -1,
448 [DEC_IRQ_AB_TXDMA] = -1,
449 [DEC_IRQ_SCC1A_RXERR] = IO_IRQ_NR(IO_INR_SCC1A_RXERR),
450 [DEC_IRQ_SCC1A_RXDMA] = IO_IRQ_NR(IO_INR_SCC1A_RXDMA),
451 [DEC_IRQ_SCC1A_TXERR] = IO_IRQ_NR(IO_INR_SCC1A_TXERR),
452 [DEC_IRQ_SCC1A_TXDMA] = IO_IRQ_NR(IO_INR_SCC1A_TXDMA),
453};
454
455static int_ptr kn02ba_cpu_mask_nr_tbl[][2] __initdata = {
456 { { .i = DEC_CPU_IRQ_MASK(KN02BA_CPU_INR_CASCADE) },
457 { .p = kn02xa_io_int } },
458 { { .i = DEC_CPU_IRQ_MASK(KN02BA_CPU_INR_TC2) },
459 { .i = DEC_CPU_IRQ_NR(KN02BA_CPU_INR_TC2) } },
460 { { .i = DEC_CPU_IRQ_MASK(KN02BA_CPU_INR_TC1) },
461 { .i = DEC_CPU_IRQ_NR(KN02BA_CPU_INR_TC1) } },
462 { { .i = DEC_CPU_IRQ_MASK(KN02BA_CPU_INR_TC0) },
463 { .i = DEC_CPU_IRQ_NR(KN02BA_CPU_INR_TC0) } },
464 { { .i = DEC_CPU_IRQ_ALL },
465 { .p = cpu_all_int } },
466};
467
468static int_ptr kn02ba_asic_mask_nr_tbl[][2] __initdata = {
469 { { .i = IO_IRQ_MASK(KN02BA_IO_INR_BUS) },
470 { .i = IO_IRQ_NR(KN02BA_IO_INR_BUS) } },
471 { { .i = IO_IRQ_MASK(KN02BA_IO_INR_RTC) },
472 { .i = IO_IRQ_NR(KN02BA_IO_INR_RTC) } },
473 { { .i = IO_IRQ_DMA },
474 { .p = asic_dma_int } },
475 { { .i = IO_IRQ_MASK(KN02BA_IO_INR_SCC0) },
476 { .i = IO_IRQ_NR(KN02BA_IO_INR_SCC0) } },
477 { { .i = IO_IRQ_MASK(KN02BA_IO_INR_SCC1) },
478 { .i = IO_IRQ_NR(KN02BA_IO_INR_SCC1) } },
479 { { .i = IO_IRQ_MASK(KN02BA_IO_INR_ASC) },
480 { .i = IO_IRQ_NR(KN02BA_IO_INR_ASC) } },
481 { { .i = IO_IRQ_MASK(KN02BA_IO_INR_LANCE) },
482 { .i = IO_IRQ_NR(KN02BA_IO_INR_LANCE) } },
483 { { .i = IO_IRQ_ALL },
484 { .p = asic_all_int } },
485};
486
487static void __init dec_init_kn02ba(void)
488{
489 /* IRQ routing. */
490 memcpy(&dec_interrupt, &kn02ba_interrupt,
491 sizeof(kn02ba_interrupt));
492
493 /* CPU IRQ priorities. */
494 memcpy(&cpu_mask_nr_tbl, &kn02ba_cpu_mask_nr_tbl,
495 sizeof(kn02ba_cpu_mask_nr_tbl));
496
497 /* I/O ASIC IRQ priorities. */
498 memcpy(&asic_mask_nr_tbl, &kn02ba_asic_mask_nr_tbl,
499 sizeof(kn02ba_asic_mask_nr_tbl));
500
501 mips_cpu_irq_init();
502 init_ioasic_irqs(IO_IRQ_BASE);
503
504} /* dec_init_kn02ba */
505
506
507/*
508 * Machine-specific initialisation for KN02-CA, aka DS5000/xx,
509 * (xx = 20, 25, 33), aka MAXine. Also applies to KN04(-CA), aka
510 * DS5000/50, aka 4MAXine.
511 */
512static int kn02ca_interrupt[DEC_NR_INTS] __initdata = {
513 [DEC_IRQ_CASCADE] = DEC_CPU_IRQ_NR(KN02CA_CPU_INR_CASCADE),
514 [DEC_IRQ_AB_RECV] = IO_IRQ_NR(KN02CA_IO_INR_AB_RECV),
515 [DEC_IRQ_AB_XMIT] = IO_IRQ_NR(KN02CA_IO_INR_AB_XMIT),
516 [DEC_IRQ_DZ11] = -1,
517 [DEC_IRQ_ASC] = IO_IRQ_NR(KN02CA_IO_INR_ASC),
518 [DEC_IRQ_FLOPPY] = IO_IRQ_NR(KN02CA_IO_INR_FLOPPY),
519 [DEC_IRQ_FPU] = DEC_CPU_IRQ_NR(DEC_CPU_INR_FPU),
520 [DEC_IRQ_HALT] = DEC_CPU_IRQ_NR(KN02CA_CPU_INR_HALT),
521 [DEC_IRQ_ISDN] = IO_IRQ_NR(KN02CA_IO_INR_ISDN),
522 [DEC_IRQ_LANCE] = IO_IRQ_NR(KN02CA_IO_INR_LANCE),
523 [DEC_IRQ_BUS] = DEC_CPU_IRQ_NR(KN02CA_CPU_INR_BUS),
524 [DEC_IRQ_PSU] = -1,
525 [DEC_IRQ_RTC] = DEC_CPU_IRQ_NR(KN02CA_CPU_INR_RTC),
526 [DEC_IRQ_SCC0] = IO_IRQ_NR(KN02CA_IO_INR_SCC0),
527 [DEC_IRQ_SCC1] = -1,
528 [DEC_IRQ_SII] = -1,
529 [DEC_IRQ_TC0] = IO_IRQ_NR(KN02CA_IO_INR_TC0),
530 [DEC_IRQ_TC1] = IO_IRQ_NR(KN02CA_IO_INR_TC1),
531 [DEC_IRQ_TC2] = -1,
532 [DEC_IRQ_TIMER] = DEC_CPU_IRQ_NR(KN02CA_CPU_INR_TIMER),
533 [DEC_IRQ_VIDEO] = IO_IRQ_NR(KN02CA_IO_INR_VIDEO),
534 [DEC_IRQ_ASC_MERR] = IO_IRQ_NR(IO_INR_ASC_MERR),
535 [DEC_IRQ_ASC_ERR] = IO_IRQ_NR(IO_INR_ASC_ERR),
536 [DEC_IRQ_ASC_DMA] = IO_IRQ_NR(IO_INR_ASC_DMA),
537 [DEC_IRQ_FLOPPY_ERR] = IO_IRQ_NR(IO_INR_FLOPPY_ERR),
538 [DEC_IRQ_ISDN_ERR] = IO_IRQ_NR(IO_INR_ISDN_ERR),
539 [DEC_IRQ_ISDN_RXDMA] = IO_IRQ_NR(IO_INR_ISDN_RXDMA),
540 [DEC_IRQ_ISDN_TXDMA] = IO_IRQ_NR(IO_INR_ISDN_TXDMA),
541 [DEC_IRQ_LANCE_MERR] = IO_IRQ_NR(IO_INR_LANCE_MERR),
542 [DEC_IRQ_SCC0A_RXERR] = IO_IRQ_NR(IO_INR_SCC0A_RXERR),
543 [DEC_IRQ_SCC0A_RXDMA] = IO_IRQ_NR(IO_INR_SCC0A_RXDMA),
544 [DEC_IRQ_SCC0A_TXERR] = IO_IRQ_NR(IO_INR_SCC0A_TXERR),
545 [DEC_IRQ_SCC0A_TXDMA] = IO_IRQ_NR(IO_INR_SCC0A_TXDMA),
546 [DEC_IRQ_AB_RXERR] = IO_IRQ_NR(IO_INR_AB_RXERR),
547 [DEC_IRQ_AB_RXDMA] = IO_IRQ_NR(IO_INR_AB_RXDMA),
548 [DEC_IRQ_AB_TXERR] = IO_IRQ_NR(IO_INR_AB_TXERR),
549 [DEC_IRQ_AB_TXDMA] = IO_IRQ_NR(IO_INR_AB_TXDMA),
550 [DEC_IRQ_SCC1A_RXERR] = -1,
551 [DEC_IRQ_SCC1A_RXDMA] = -1,
552 [DEC_IRQ_SCC1A_TXERR] = -1,
553 [DEC_IRQ_SCC1A_TXDMA] = -1,
554};
555
556static int_ptr kn02ca_cpu_mask_nr_tbl[][2] __initdata = {
557 { { .i = DEC_CPU_IRQ_MASK(KN02CA_CPU_INR_BUS) },
558 { .i = DEC_CPU_IRQ_NR(KN02CA_CPU_INR_BUS) } },
559 { { .i = DEC_CPU_IRQ_MASK(KN02CA_CPU_INR_RTC) },
560 { .i = DEC_CPU_IRQ_NR(KN02CA_CPU_INR_RTC) } },
561 { { .i = DEC_CPU_IRQ_MASK(KN02CA_CPU_INR_CASCADE) },
562 { .p = kn02xa_io_int } },
563 { { .i = DEC_CPU_IRQ_ALL },
564 { .p = cpu_all_int } },
565};
566
567static int_ptr kn02ca_asic_mask_nr_tbl[][2] __initdata = {
568 { { .i = IO_IRQ_DMA },
569 { .p = asic_dma_int } },
570 { { .i = IO_IRQ_MASK(KN02CA_IO_INR_SCC0) },
571 { .i = IO_IRQ_NR(KN02CA_IO_INR_SCC0) } },
572 { { .i = IO_IRQ_MASK(KN02CA_IO_INR_ASC) },
573 { .i = IO_IRQ_NR(KN02CA_IO_INR_ASC) } },
574 { { .i = IO_IRQ_MASK(KN02CA_IO_INR_LANCE) },
575 { .i = IO_IRQ_NR(KN02CA_IO_INR_LANCE) } },
576 { { .i = IO_IRQ_MASK(KN02CA_IO_INR_TC1) },
577 { .i = IO_IRQ_NR(KN02CA_IO_INR_TC1) } },
578 { { .i = IO_IRQ_MASK(KN02CA_IO_INR_TC0) },
579 { .i = IO_IRQ_NR(KN02CA_IO_INR_TC0) } },
580 { { .i = IO_IRQ_ALL },
581 { .p = asic_all_int } },
582};
583
584static void __init dec_init_kn02ca(void)
585{
586 /* IRQ routing. */
587 memcpy(&dec_interrupt, &kn02ca_interrupt,
588 sizeof(kn02ca_interrupt));
589
590 /* CPU IRQ priorities. */
591 memcpy(&cpu_mask_nr_tbl, &kn02ca_cpu_mask_nr_tbl,
592 sizeof(kn02ca_cpu_mask_nr_tbl));
593
594 /* I/O ASIC IRQ priorities. */
595 memcpy(&asic_mask_nr_tbl, &kn02ca_asic_mask_nr_tbl,
596 sizeof(kn02ca_asic_mask_nr_tbl));
597
598 mips_cpu_irq_init();
599 init_ioasic_irqs(IO_IRQ_BASE);
600
601} /* dec_init_kn02ca */
602
603
604/*
605 * Machine-specific initialisation for KN03, aka DS5000/240,
606 * aka 3max+ and DS5900, aka BIGmax. Also applies to KN05, aka
607 * DS5000/260, aka 4max+ and DS5900/260.
608 */
609static int kn03_interrupt[DEC_NR_INTS] __initdata = {
610 [DEC_IRQ_CASCADE] = DEC_CPU_IRQ_NR(KN03_CPU_INR_CASCADE),
611 [DEC_IRQ_AB_RECV] = -1,
612 [DEC_IRQ_AB_XMIT] = -1,
613 [DEC_IRQ_DZ11] = -1,
614 [DEC_IRQ_ASC] = IO_IRQ_NR(KN03_IO_INR_ASC),
615 [DEC_IRQ_FLOPPY] = -1,
616 [DEC_IRQ_FPU] = DEC_CPU_IRQ_NR(DEC_CPU_INR_FPU),
617 [DEC_IRQ_HALT] = DEC_CPU_IRQ_NR(KN03_CPU_INR_HALT),
618 [DEC_IRQ_ISDN] = -1,
619 [DEC_IRQ_LANCE] = IO_IRQ_NR(KN03_IO_INR_LANCE),
620 [DEC_IRQ_BUS] = DEC_CPU_IRQ_NR(KN03_CPU_INR_BUS),
621 [DEC_IRQ_PSU] = IO_IRQ_NR(KN03_IO_INR_PSU),
622 [DEC_IRQ_RTC] = DEC_CPU_IRQ_NR(KN03_CPU_INR_RTC),
623 [DEC_IRQ_SCC0] = IO_IRQ_NR(KN03_IO_INR_SCC0),
624 [DEC_IRQ_SCC1] = IO_IRQ_NR(KN03_IO_INR_SCC1),
625 [DEC_IRQ_SII] = -1,
626 [DEC_IRQ_TC0] = IO_IRQ_NR(KN03_IO_INR_TC0),
627 [DEC_IRQ_TC1] = IO_IRQ_NR(KN03_IO_INR_TC1),
628 [DEC_IRQ_TC2] = IO_IRQ_NR(KN03_IO_INR_TC2),
629 [DEC_IRQ_TIMER] = -1,
630 [DEC_IRQ_VIDEO] = -1,
631 [DEC_IRQ_ASC_MERR] = IO_IRQ_NR(IO_INR_ASC_MERR),
632 [DEC_IRQ_ASC_ERR] = IO_IRQ_NR(IO_INR_ASC_ERR),
633 [DEC_IRQ_ASC_DMA] = IO_IRQ_NR(IO_INR_ASC_DMA),
634 [DEC_IRQ_FLOPPY_ERR] = -1,
635 [DEC_IRQ_ISDN_ERR] = -1,
636 [DEC_IRQ_ISDN_RXDMA] = -1,
637 [DEC_IRQ_ISDN_TXDMA] = -1,
638 [DEC_IRQ_LANCE_MERR] = IO_IRQ_NR(IO_INR_LANCE_MERR),
639 [DEC_IRQ_SCC0A_RXERR] = IO_IRQ_NR(IO_INR_SCC0A_RXERR),
640 [DEC_IRQ_SCC0A_RXDMA] = IO_IRQ_NR(IO_INR_SCC0A_RXDMA),
641 [DEC_IRQ_SCC0A_TXERR] = IO_IRQ_NR(IO_INR_SCC0A_TXERR),
642 [DEC_IRQ_SCC0A_TXDMA] = IO_IRQ_NR(IO_INR_SCC0A_TXDMA),
643 [DEC_IRQ_AB_RXERR] = -1,
644 [DEC_IRQ_AB_RXDMA] = -1,
645 [DEC_IRQ_AB_TXERR] = -1,
646 [DEC_IRQ_AB_TXDMA] = -1,
647 [DEC_IRQ_SCC1A_RXERR] = IO_IRQ_NR(IO_INR_SCC1A_RXERR),
648 [DEC_IRQ_SCC1A_RXDMA] = IO_IRQ_NR(IO_INR_SCC1A_RXDMA),
649 [DEC_IRQ_SCC1A_TXERR] = IO_IRQ_NR(IO_INR_SCC1A_TXERR),
650 [DEC_IRQ_SCC1A_TXDMA] = IO_IRQ_NR(IO_INR_SCC1A_TXDMA),
651};
652
653static int_ptr kn03_cpu_mask_nr_tbl[][2] __initdata = {
654 { { .i = DEC_CPU_IRQ_MASK(KN03_CPU_INR_BUS) },
655 { .i = DEC_CPU_IRQ_NR(KN03_CPU_INR_BUS) } },
656 { { .i = DEC_CPU_IRQ_MASK(KN03_CPU_INR_RTC) },
657 { .i = DEC_CPU_IRQ_NR(KN03_CPU_INR_RTC) } },
658 { { .i = DEC_CPU_IRQ_MASK(KN03_CPU_INR_CASCADE) },
659 { .p = kn03_io_int } },
660 { { .i = DEC_CPU_IRQ_ALL },
661 { .p = cpu_all_int } },
662};
663
664static int_ptr kn03_asic_mask_nr_tbl[][2] __initdata = {
665 { { .i = IO_IRQ_DMA },
666 { .p = asic_dma_int } },
667 { { .i = IO_IRQ_MASK(KN03_IO_INR_SCC0) },
668 { .i = IO_IRQ_NR(KN03_IO_INR_SCC0) } },
669 { { .i = IO_IRQ_MASK(KN03_IO_INR_SCC1) },
670 { .i = IO_IRQ_NR(KN03_IO_INR_SCC1) } },
671 { { .i = IO_IRQ_MASK(KN03_IO_INR_ASC) },
672 { .i = IO_IRQ_NR(KN03_IO_INR_ASC) } },
673 { { .i = IO_IRQ_MASK(KN03_IO_INR_LANCE) },
674 { .i = IO_IRQ_NR(KN03_IO_INR_LANCE) } },
675 { { .i = IO_IRQ_MASK(KN03_IO_INR_TC2) },
676 { .i = IO_IRQ_NR(KN03_IO_INR_TC2) } },
677 { { .i = IO_IRQ_MASK(KN03_IO_INR_TC1) },
678 { .i = IO_IRQ_NR(KN03_IO_INR_TC1) } },
679 { { .i = IO_IRQ_MASK(KN03_IO_INR_TC0) },
680 { .i = IO_IRQ_NR(KN03_IO_INR_TC0) } },
681 { { .i = IO_IRQ_ALL },
682 { .p = asic_all_int } },
683};
684
685static void __init dec_init_kn03(void)
686{
687 /* IRQ routing. */
688 memcpy(&dec_interrupt, &kn03_interrupt,
689 sizeof(kn03_interrupt));
690
691 /* CPU IRQ priorities. */
692 memcpy(&cpu_mask_nr_tbl, &kn03_cpu_mask_nr_tbl,
693 sizeof(kn03_cpu_mask_nr_tbl));
694
695 /* I/O ASIC IRQ priorities. */
696 memcpy(&asic_mask_nr_tbl, &kn03_asic_mask_nr_tbl,
697 sizeof(kn03_asic_mask_nr_tbl));
698
699 mips_cpu_irq_init();
700 init_ioasic_irqs(IO_IRQ_BASE);
701
702} /* dec_init_kn03 */
703
704
705void __init arch_init_irq(void)
706{
707 switch (mips_machtype) {
708 case MACH_DS23100: /* DS2100/DS3100 Pmin/Pmax */
709 dec_init_kn01();
710 break;
711 case MACH_DS5100: /* DS5100 MIPSmate */
712 dec_init_kn230();
713 break;
714 case MACH_DS5000_200: /* DS5000/200 3max */
715 dec_init_kn02();
716 break;
717 case MACH_DS5000_1XX: /* DS5000/1xx 3min */
718 dec_init_kn02ba();
719 break;
720 case MACH_DS5000_2X0: /* DS5000/240 3max+ */
721 case MACH_DS5900: /* DS5900 bigmax */
722 dec_init_kn03();
723 break;
724 case MACH_DS5000_XX: /* Personal DS5000/xx */
725 dec_init_kn02ca();
726 break;
727 case MACH_DS5800: /* DS5800 Isis */
728 panic("Don't know how to set this up!");
729 break;
730 case MACH_DS5400: /* DS5400 MIPSfair */
731 panic("Don't know how to set this up!");
732 break;
733 case MACH_DS5500: /* DS5500 MIPSfair-2 */
734 panic("Don't know how to set this up!");
735 break;
736 }
737
738 /* Free the FPU interrupt if the exception is present. */
739 if (!cpu_has_nofpuex) {
740 cpu_fpu_mask = 0;
741 dec_interrupt[DEC_IRQ_FPU] = -1;
742 }
743 /* Free the halt interrupt unused on R4k systems. */
744 if (current_cpu_type() == CPU_R4000SC ||
745 current_cpu_type() == CPU_R4400SC)
746 dec_interrupt[DEC_IRQ_HALT] = -1;
747
748 /* Register board interrupts: FPU and cascade. */
749 if (IS_ENABLED(CONFIG_MIPS_FP_SUPPORT) &&
750 dec_interrupt[DEC_IRQ_FPU] >= 0 && cpu_has_fpu) {
751 struct irq_desc *desc_fpu;
752 int irq_fpu;
753
754 irq_fpu = dec_interrupt[DEC_IRQ_FPU];
755 if (request_irq(irq_fpu, no_action, IRQF_NO_THREAD, "fpu",
756 NULL))
757 pr_err("Failed to register fpu interrupt\n");
758 desc_fpu = irq_to_desc(irq_fpu);
759 fpu_kstat_irq = this_cpu_ptr(desc_fpu->kstat_irqs);
760 }
761 if (dec_interrupt[DEC_IRQ_CASCADE] >= 0) {
762 if (request_irq(dec_interrupt[DEC_IRQ_CASCADE], no_action,
763 IRQF_NO_THREAD, "cascade", NULL))
764 pr_err("Failed to register cascade interrupt\n");
765 }
766 /* Register the bus error interrupt. */
767 if (dec_interrupt[DEC_IRQ_BUS] >= 0 && busirq_handler) {
768 if (request_irq(dec_interrupt[DEC_IRQ_BUS], busirq_handler,
769 busirq_flags, "bus error", busirq_handler))
770 pr_err("Failed to register bus error interrupt\n");
771 }
772 /* Register the HALT interrupt. */
773 if (dec_interrupt[DEC_IRQ_HALT] >= 0) {
774 if (request_irq(dec_interrupt[DEC_IRQ_HALT], dec_intr_halt,
775 IRQF_NO_THREAD, "halt", NULL))
776 pr_err("Failed to register halt interrupt\n");
777 }
778}
779
780asmlinkage unsigned int dec_irq_dispatch(unsigned int irq)
781{
782 do_IRQ(irq);
783 return 0;
784}
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/irq.h>
16#include <linux/irqnr.h>
17#include <linux/module.h>
18#include <linux/param.h>
19#include <linux/percpu-defs.h>
20#include <linux/sched.h>
21#include <linux/spinlock.h>
22#include <linux/types.h>
23#include <linux/pm.h>
24
25#include <asm/bootinfo.h>
26#include <asm/cpu.h>
27#include <asm/cpu-features.h>
28#include <asm/cpu-type.h>
29#include <asm/irq.h>
30#include <asm/irq_cpu.h>
31#include <asm/mipsregs.h>
32#include <asm/reboot.h>
33#include <asm/time.h>
34#include <asm/traps.h>
35#include <asm/wbflush.h>
36
37#include <asm/dec/interrupts.h>
38#include <asm/dec/ioasic.h>
39#include <asm/dec/ioasic_addrs.h>
40#include <asm/dec/ioasic_ints.h>
41#include <asm/dec/kn01.h>
42#include <asm/dec/kn02.h>
43#include <asm/dec/kn02ba.h>
44#include <asm/dec/kn02ca.h>
45#include <asm/dec/kn03.h>
46#include <asm/dec/kn230.h>
47#include <asm/dec/system.h>
48
49
50extern void dec_machine_restart(char *command);
51extern void dec_machine_halt(void);
52extern void dec_machine_power_off(void);
53extern irqreturn_t dec_intr_halt(int irq, void *dev_id);
54
55unsigned long dec_kn_slot_base, dec_kn_slot_size;
56
57EXPORT_SYMBOL(dec_kn_slot_base);
58EXPORT_SYMBOL(dec_kn_slot_size);
59
60int dec_tc_bus;
61
62DEFINE_SPINLOCK(ioasic_ssr_lock);
63
64volatile u32 *ioasic_base;
65
66EXPORT_SYMBOL(ioasic_base);
67
68/*
69 * IRQ routing and priority tables. Priorites are set as follows:
70 *
71 * KN01 KN230 KN02 KN02-BA KN02-CA KN03
72 *
73 * MEMORY CPU CPU CPU ASIC CPU CPU
74 * RTC CPU CPU CPU ASIC CPU CPU
75 * DMA - - - ASIC ASIC ASIC
76 * SERIAL0 CPU CPU CSR ASIC ASIC ASIC
77 * SERIAL1 - - - ASIC - ASIC
78 * SCSI CPU CPU CSR ASIC ASIC ASIC
79 * ETHERNET CPU * CSR ASIC ASIC ASIC
80 * other - - - ASIC - -
81 * TC2 - - CSR CPU ASIC ASIC
82 * TC1 - - CSR CPU ASIC ASIC
83 * TC0 - - CSR CPU ASIC ASIC
84 * other - CPU - CPU ASIC ASIC
85 * other - - - - CPU CPU
86 *
87 * * -- shared with SCSI
88 */
89
90int dec_interrupt[DEC_NR_INTS] = {
91 [0 ... DEC_NR_INTS - 1] = -1
92};
93
94EXPORT_SYMBOL(dec_interrupt);
95
96int_ptr cpu_mask_nr_tbl[DEC_MAX_CPU_INTS][2] = {
97 { { .i = ~0 }, { .p = dec_intr_unimplemented } },
98};
99int_ptr asic_mask_nr_tbl[DEC_MAX_ASIC_INTS][2] = {
100 { { .i = ~0 }, { .p = asic_intr_unimplemented } },
101};
102int cpu_fpu_mask = DEC_CPU_IRQ_MASK(DEC_CPU_INR_FPU);
103int *fpu_kstat_irq;
104
105static struct irqaction ioirq = {
106 .handler = no_action,
107 .name = "cascade",
108 .flags = IRQF_NO_THREAD,
109};
110static struct irqaction fpuirq = {
111 .handler = no_action,
112 .name = "fpu",
113 .flags = IRQF_NO_THREAD,
114};
115
116static struct irqaction busirq = {
117 .name = "bus error",
118 .flags = IRQF_NO_THREAD,
119};
120
121static struct irqaction haltirq = {
122 .handler = dec_intr_halt,
123 .name = "halt",
124 .flags = IRQF_NO_THREAD,
125};
126
127
128/*
129 * Bus error (DBE/IBE exceptions and bus interrupts) handling setup.
130 */
131static void __init dec_be_init(void)
132{
133 switch (mips_machtype) {
134 case MACH_DS23100: /* DS2100/DS3100 Pmin/Pmax */
135 board_be_handler = dec_kn01_be_handler;
136 busirq.handler = dec_kn01_be_interrupt;
137 busirq.flags |= IRQF_SHARED;
138 dec_kn01_be_init();
139 break;
140 case MACH_DS5000_1XX: /* DS5000/1xx 3min */
141 case MACH_DS5000_XX: /* DS5000/xx Maxine */
142 board_be_handler = dec_kn02xa_be_handler;
143 busirq.handler = dec_kn02xa_be_interrupt;
144 dec_kn02xa_be_init();
145 break;
146 case MACH_DS5000_200: /* DS5000/200 3max */
147 case MACH_DS5000_2X0: /* DS5000/240 3max+ */
148 case MACH_DS5900: /* DS5900 bigmax */
149 board_be_handler = dec_ecc_be_handler;
150 busirq.handler = dec_ecc_be_interrupt;
151 dec_ecc_be_init();
152 break;
153 }
154}
155
156void __init plat_mem_setup(void)
157{
158 board_be_init = dec_be_init;
159
160 wbflush_setup();
161
162 _machine_restart = dec_machine_restart;
163 _machine_halt = dec_machine_halt;
164 pm_power_off = dec_machine_power_off;
165
166 ioport_resource.start = ~0UL;
167 ioport_resource.end = 0UL;
168}
169
170/*
171 * Machine-specific initialisation for KN01, aka DS2100 (aka Pmin)
172 * or DS3100 (aka Pmax).
173 */
174static int kn01_interrupt[DEC_NR_INTS] __initdata = {
175 [DEC_IRQ_CASCADE] = -1,
176 [DEC_IRQ_AB_RECV] = -1,
177 [DEC_IRQ_AB_XMIT] = -1,
178 [DEC_IRQ_DZ11] = DEC_CPU_IRQ_NR(KN01_CPU_INR_DZ11),
179 [DEC_IRQ_ASC] = -1,
180 [DEC_IRQ_FLOPPY] = -1,
181 [DEC_IRQ_FPU] = DEC_CPU_IRQ_NR(DEC_CPU_INR_FPU),
182 [DEC_IRQ_HALT] = -1,
183 [DEC_IRQ_ISDN] = -1,
184 [DEC_IRQ_LANCE] = DEC_CPU_IRQ_NR(KN01_CPU_INR_LANCE),
185 [DEC_IRQ_BUS] = DEC_CPU_IRQ_NR(KN01_CPU_INR_BUS),
186 [DEC_IRQ_PSU] = -1,
187 [DEC_IRQ_RTC] = DEC_CPU_IRQ_NR(KN01_CPU_INR_RTC),
188 [DEC_IRQ_SCC0] = -1,
189 [DEC_IRQ_SCC1] = -1,
190 [DEC_IRQ_SII] = DEC_CPU_IRQ_NR(KN01_CPU_INR_SII),
191 [DEC_IRQ_TC0] = -1,
192 [DEC_IRQ_TC1] = -1,
193 [DEC_IRQ_TC2] = -1,
194 [DEC_IRQ_TIMER] = -1,
195 [DEC_IRQ_VIDEO] = DEC_CPU_IRQ_NR(KN01_CPU_INR_VIDEO),
196 [DEC_IRQ_ASC_MERR] = -1,
197 [DEC_IRQ_ASC_ERR] = -1,
198 [DEC_IRQ_ASC_DMA] = -1,
199 [DEC_IRQ_FLOPPY_ERR] = -1,
200 [DEC_IRQ_ISDN_ERR] = -1,
201 [DEC_IRQ_ISDN_RXDMA] = -1,
202 [DEC_IRQ_ISDN_TXDMA] = -1,
203 [DEC_IRQ_LANCE_MERR] = -1,
204 [DEC_IRQ_SCC0A_RXERR] = -1,
205 [DEC_IRQ_SCC0A_RXDMA] = -1,
206 [DEC_IRQ_SCC0A_TXERR] = -1,
207 [DEC_IRQ_SCC0A_TXDMA] = -1,
208 [DEC_IRQ_AB_RXERR] = -1,
209 [DEC_IRQ_AB_RXDMA] = -1,
210 [DEC_IRQ_AB_TXERR] = -1,
211 [DEC_IRQ_AB_TXDMA] = -1,
212 [DEC_IRQ_SCC1A_RXERR] = -1,
213 [DEC_IRQ_SCC1A_RXDMA] = -1,
214 [DEC_IRQ_SCC1A_TXERR] = -1,
215 [DEC_IRQ_SCC1A_TXDMA] = -1,
216};
217
218static int_ptr kn01_cpu_mask_nr_tbl[][2] __initdata = {
219 { { .i = DEC_CPU_IRQ_MASK(KN01_CPU_INR_BUS) },
220 { .i = DEC_CPU_IRQ_NR(KN01_CPU_INR_BUS) } },
221 { { .i = DEC_CPU_IRQ_MASK(KN01_CPU_INR_RTC) },
222 { .i = DEC_CPU_IRQ_NR(KN01_CPU_INR_RTC) } },
223 { { .i = DEC_CPU_IRQ_MASK(KN01_CPU_INR_DZ11) },
224 { .i = DEC_CPU_IRQ_NR(KN01_CPU_INR_DZ11) } },
225 { { .i = DEC_CPU_IRQ_MASK(KN01_CPU_INR_SII) },
226 { .i = DEC_CPU_IRQ_NR(KN01_CPU_INR_SII) } },
227 { { .i = DEC_CPU_IRQ_MASK(KN01_CPU_INR_LANCE) },
228 { .i = DEC_CPU_IRQ_NR(KN01_CPU_INR_LANCE) } },
229 { { .i = DEC_CPU_IRQ_ALL },
230 { .p = cpu_all_int } },
231};
232
233static void __init dec_init_kn01(void)
234{
235 /* IRQ routing. */
236 memcpy(&dec_interrupt, &kn01_interrupt,
237 sizeof(kn01_interrupt));
238
239 /* CPU IRQ priorities. */
240 memcpy(&cpu_mask_nr_tbl, &kn01_cpu_mask_nr_tbl,
241 sizeof(kn01_cpu_mask_nr_tbl));
242
243 mips_cpu_irq_init();
244
245} /* dec_init_kn01 */
246
247
248/*
249 * Machine-specific initialisation for KN230, aka DS5100, aka MIPSmate.
250 */
251static int kn230_interrupt[DEC_NR_INTS] __initdata = {
252 [DEC_IRQ_CASCADE] = -1,
253 [DEC_IRQ_AB_RECV] = -1,
254 [DEC_IRQ_AB_XMIT] = -1,
255 [DEC_IRQ_DZ11] = DEC_CPU_IRQ_NR(KN230_CPU_INR_DZ11),
256 [DEC_IRQ_ASC] = -1,
257 [DEC_IRQ_FLOPPY] = -1,
258 [DEC_IRQ_FPU] = DEC_CPU_IRQ_NR(DEC_CPU_INR_FPU),
259 [DEC_IRQ_HALT] = DEC_CPU_IRQ_NR(KN230_CPU_INR_HALT),
260 [DEC_IRQ_ISDN] = -1,
261 [DEC_IRQ_LANCE] = DEC_CPU_IRQ_NR(KN230_CPU_INR_LANCE),
262 [DEC_IRQ_BUS] = DEC_CPU_IRQ_NR(KN230_CPU_INR_BUS),
263 [DEC_IRQ_PSU] = -1,
264 [DEC_IRQ_RTC] = DEC_CPU_IRQ_NR(KN230_CPU_INR_RTC),
265 [DEC_IRQ_SCC0] = -1,
266 [DEC_IRQ_SCC1] = -1,
267 [DEC_IRQ_SII] = DEC_CPU_IRQ_NR(KN230_CPU_INR_SII),
268 [DEC_IRQ_TC0] = -1,
269 [DEC_IRQ_TC1] = -1,
270 [DEC_IRQ_TC2] = -1,
271 [DEC_IRQ_TIMER] = -1,
272 [DEC_IRQ_VIDEO] = -1,
273 [DEC_IRQ_ASC_MERR] = -1,
274 [DEC_IRQ_ASC_ERR] = -1,
275 [DEC_IRQ_ASC_DMA] = -1,
276 [DEC_IRQ_FLOPPY_ERR] = -1,
277 [DEC_IRQ_ISDN_ERR] = -1,
278 [DEC_IRQ_ISDN_RXDMA] = -1,
279 [DEC_IRQ_ISDN_TXDMA] = -1,
280 [DEC_IRQ_LANCE_MERR] = -1,
281 [DEC_IRQ_SCC0A_RXERR] = -1,
282 [DEC_IRQ_SCC0A_RXDMA] = -1,
283 [DEC_IRQ_SCC0A_TXERR] = -1,
284 [DEC_IRQ_SCC0A_TXDMA] = -1,
285 [DEC_IRQ_AB_RXERR] = -1,
286 [DEC_IRQ_AB_RXDMA] = -1,
287 [DEC_IRQ_AB_TXERR] = -1,
288 [DEC_IRQ_AB_TXDMA] = -1,
289 [DEC_IRQ_SCC1A_RXERR] = -1,
290 [DEC_IRQ_SCC1A_RXDMA] = -1,
291 [DEC_IRQ_SCC1A_TXERR] = -1,
292 [DEC_IRQ_SCC1A_TXDMA] = -1,
293};
294
295static int_ptr kn230_cpu_mask_nr_tbl[][2] __initdata = {
296 { { .i = DEC_CPU_IRQ_MASK(KN230_CPU_INR_BUS) },
297 { .i = DEC_CPU_IRQ_NR(KN230_CPU_INR_BUS) } },
298 { { .i = DEC_CPU_IRQ_MASK(KN230_CPU_INR_RTC) },
299 { .i = DEC_CPU_IRQ_NR(KN230_CPU_INR_RTC) } },
300 { { .i = DEC_CPU_IRQ_MASK(KN230_CPU_INR_DZ11) },
301 { .i = DEC_CPU_IRQ_NR(KN230_CPU_INR_DZ11) } },
302 { { .i = DEC_CPU_IRQ_MASK(KN230_CPU_INR_SII) },
303 { .i = DEC_CPU_IRQ_NR(KN230_CPU_INR_SII) } },
304 { { .i = DEC_CPU_IRQ_ALL },
305 { .p = cpu_all_int } },
306};
307
308static void __init dec_init_kn230(void)
309{
310 /* IRQ routing. */
311 memcpy(&dec_interrupt, &kn230_interrupt,
312 sizeof(kn230_interrupt));
313
314 /* CPU IRQ priorities. */
315 memcpy(&cpu_mask_nr_tbl, &kn230_cpu_mask_nr_tbl,
316 sizeof(kn230_cpu_mask_nr_tbl));
317
318 mips_cpu_irq_init();
319
320} /* dec_init_kn230 */
321
322
323/*
324 * Machine-specific initialisation for KN02, aka DS5000/200, aka 3max.
325 */
326static int kn02_interrupt[DEC_NR_INTS] __initdata = {
327 [DEC_IRQ_CASCADE] = DEC_CPU_IRQ_NR(KN02_CPU_INR_CASCADE),
328 [DEC_IRQ_AB_RECV] = -1,
329 [DEC_IRQ_AB_XMIT] = -1,
330 [DEC_IRQ_DZ11] = KN02_IRQ_NR(KN02_CSR_INR_DZ11),
331 [DEC_IRQ_ASC] = KN02_IRQ_NR(KN02_CSR_INR_ASC),
332 [DEC_IRQ_FLOPPY] = -1,
333 [DEC_IRQ_FPU] = DEC_CPU_IRQ_NR(DEC_CPU_INR_FPU),
334 [DEC_IRQ_HALT] = -1,
335 [DEC_IRQ_ISDN] = -1,
336 [DEC_IRQ_LANCE] = KN02_IRQ_NR(KN02_CSR_INR_LANCE),
337 [DEC_IRQ_BUS] = DEC_CPU_IRQ_NR(KN02_CPU_INR_BUS),
338 [DEC_IRQ_PSU] = -1,
339 [DEC_IRQ_RTC] = DEC_CPU_IRQ_NR(KN02_CPU_INR_RTC),
340 [DEC_IRQ_SCC0] = -1,
341 [DEC_IRQ_SCC1] = -1,
342 [DEC_IRQ_SII] = -1,
343 [DEC_IRQ_TC0] = KN02_IRQ_NR(KN02_CSR_INR_TC0),
344 [DEC_IRQ_TC1] = KN02_IRQ_NR(KN02_CSR_INR_TC1),
345 [DEC_IRQ_TC2] = KN02_IRQ_NR(KN02_CSR_INR_TC2),
346 [DEC_IRQ_TIMER] = -1,
347 [DEC_IRQ_VIDEO] = -1,
348 [DEC_IRQ_ASC_MERR] = -1,
349 [DEC_IRQ_ASC_ERR] = -1,
350 [DEC_IRQ_ASC_DMA] = -1,
351 [DEC_IRQ_FLOPPY_ERR] = -1,
352 [DEC_IRQ_ISDN_ERR] = -1,
353 [DEC_IRQ_ISDN_RXDMA] = -1,
354 [DEC_IRQ_ISDN_TXDMA] = -1,
355 [DEC_IRQ_LANCE_MERR] = -1,
356 [DEC_IRQ_SCC0A_RXERR] = -1,
357 [DEC_IRQ_SCC0A_RXDMA] = -1,
358 [DEC_IRQ_SCC0A_TXERR] = -1,
359 [DEC_IRQ_SCC0A_TXDMA] = -1,
360 [DEC_IRQ_AB_RXERR] = -1,
361 [DEC_IRQ_AB_RXDMA] = -1,
362 [DEC_IRQ_AB_TXERR] = -1,
363 [DEC_IRQ_AB_TXDMA] = -1,
364 [DEC_IRQ_SCC1A_RXERR] = -1,
365 [DEC_IRQ_SCC1A_RXDMA] = -1,
366 [DEC_IRQ_SCC1A_TXERR] = -1,
367 [DEC_IRQ_SCC1A_TXDMA] = -1,
368};
369
370static int_ptr kn02_cpu_mask_nr_tbl[][2] __initdata = {
371 { { .i = DEC_CPU_IRQ_MASK(KN02_CPU_INR_BUS) },
372 { .i = DEC_CPU_IRQ_NR(KN02_CPU_INR_BUS) } },
373 { { .i = DEC_CPU_IRQ_MASK(KN02_CPU_INR_RTC) },
374 { .i = DEC_CPU_IRQ_NR(KN02_CPU_INR_RTC) } },
375 { { .i = DEC_CPU_IRQ_MASK(KN02_CPU_INR_CASCADE) },
376 { .p = kn02_io_int } },
377 { { .i = DEC_CPU_IRQ_ALL },
378 { .p = cpu_all_int } },
379};
380
381static int_ptr kn02_asic_mask_nr_tbl[][2] __initdata = {
382 { { .i = KN02_IRQ_MASK(KN02_CSR_INR_DZ11) },
383 { .i = KN02_IRQ_NR(KN02_CSR_INR_DZ11) } },
384 { { .i = KN02_IRQ_MASK(KN02_CSR_INR_ASC) },
385 { .i = KN02_IRQ_NR(KN02_CSR_INR_ASC) } },
386 { { .i = KN02_IRQ_MASK(KN02_CSR_INR_LANCE) },
387 { .i = KN02_IRQ_NR(KN02_CSR_INR_LANCE) } },
388 { { .i = KN02_IRQ_MASK(KN02_CSR_INR_TC2) },
389 { .i = KN02_IRQ_NR(KN02_CSR_INR_TC2) } },
390 { { .i = KN02_IRQ_MASK(KN02_CSR_INR_TC1) },
391 { .i = KN02_IRQ_NR(KN02_CSR_INR_TC1) } },
392 { { .i = KN02_IRQ_MASK(KN02_CSR_INR_TC0) },
393 { .i = KN02_IRQ_NR(KN02_CSR_INR_TC0) } },
394 { { .i = KN02_IRQ_ALL },
395 { .p = kn02_all_int } },
396};
397
398static void __init dec_init_kn02(void)
399{
400 /* IRQ routing. */
401 memcpy(&dec_interrupt, &kn02_interrupt,
402 sizeof(kn02_interrupt));
403
404 /* CPU IRQ priorities. */
405 memcpy(&cpu_mask_nr_tbl, &kn02_cpu_mask_nr_tbl,
406 sizeof(kn02_cpu_mask_nr_tbl));
407
408 /* KN02 CSR IRQ priorities. */
409 memcpy(&asic_mask_nr_tbl, &kn02_asic_mask_nr_tbl,
410 sizeof(kn02_asic_mask_nr_tbl));
411
412 mips_cpu_irq_init();
413 init_kn02_irqs(KN02_IRQ_BASE);
414
415} /* dec_init_kn02 */
416
417
418/*
419 * Machine-specific initialisation for KN02-BA, aka DS5000/1xx
420 * (xx = 20, 25, 33), aka 3min. Also applies to KN04(-BA), aka
421 * DS5000/150, aka 4min.
422 */
423static int kn02ba_interrupt[DEC_NR_INTS] __initdata = {
424 [DEC_IRQ_CASCADE] = DEC_CPU_IRQ_NR(KN02BA_CPU_INR_CASCADE),
425 [DEC_IRQ_AB_RECV] = -1,
426 [DEC_IRQ_AB_XMIT] = -1,
427 [DEC_IRQ_DZ11] = -1,
428 [DEC_IRQ_ASC] = IO_IRQ_NR(KN02BA_IO_INR_ASC),
429 [DEC_IRQ_FLOPPY] = -1,
430 [DEC_IRQ_FPU] = DEC_CPU_IRQ_NR(DEC_CPU_INR_FPU),
431 [DEC_IRQ_HALT] = DEC_CPU_IRQ_NR(KN02BA_CPU_INR_HALT),
432 [DEC_IRQ_ISDN] = -1,
433 [DEC_IRQ_LANCE] = IO_IRQ_NR(KN02BA_IO_INR_LANCE),
434 [DEC_IRQ_BUS] = IO_IRQ_NR(KN02BA_IO_INR_BUS),
435 [DEC_IRQ_PSU] = IO_IRQ_NR(KN02BA_IO_INR_PSU),
436 [DEC_IRQ_RTC] = IO_IRQ_NR(KN02BA_IO_INR_RTC),
437 [DEC_IRQ_SCC0] = IO_IRQ_NR(KN02BA_IO_INR_SCC0),
438 [DEC_IRQ_SCC1] = IO_IRQ_NR(KN02BA_IO_INR_SCC1),
439 [DEC_IRQ_SII] = -1,
440 [DEC_IRQ_TC0] = DEC_CPU_IRQ_NR(KN02BA_CPU_INR_TC0),
441 [DEC_IRQ_TC1] = DEC_CPU_IRQ_NR(KN02BA_CPU_INR_TC1),
442 [DEC_IRQ_TC2] = DEC_CPU_IRQ_NR(KN02BA_CPU_INR_TC2),
443 [DEC_IRQ_TIMER] = -1,
444 [DEC_IRQ_VIDEO] = -1,
445 [DEC_IRQ_ASC_MERR] = IO_IRQ_NR(IO_INR_ASC_MERR),
446 [DEC_IRQ_ASC_ERR] = IO_IRQ_NR(IO_INR_ASC_ERR),
447 [DEC_IRQ_ASC_DMA] = IO_IRQ_NR(IO_INR_ASC_DMA),
448 [DEC_IRQ_FLOPPY_ERR] = -1,
449 [DEC_IRQ_ISDN_ERR] = -1,
450 [DEC_IRQ_ISDN_RXDMA] = -1,
451 [DEC_IRQ_ISDN_TXDMA] = -1,
452 [DEC_IRQ_LANCE_MERR] = IO_IRQ_NR(IO_INR_LANCE_MERR),
453 [DEC_IRQ_SCC0A_RXERR] = IO_IRQ_NR(IO_INR_SCC0A_RXERR),
454 [DEC_IRQ_SCC0A_RXDMA] = IO_IRQ_NR(IO_INR_SCC0A_RXDMA),
455 [DEC_IRQ_SCC0A_TXERR] = IO_IRQ_NR(IO_INR_SCC0A_TXERR),
456 [DEC_IRQ_SCC0A_TXDMA] = IO_IRQ_NR(IO_INR_SCC0A_TXDMA),
457 [DEC_IRQ_AB_RXERR] = -1,
458 [DEC_IRQ_AB_RXDMA] = -1,
459 [DEC_IRQ_AB_TXERR] = -1,
460 [DEC_IRQ_AB_TXDMA] = -1,
461 [DEC_IRQ_SCC1A_RXERR] = IO_IRQ_NR(IO_INR_SCC1A_RXERR),
462 [DEC_IRQ_SCC1A_RXDMA] = IO_IRQ_NR(IO_INR_SCC1A_RXDMA),
463 [DEC_IRQ_SCC1A_TXERR] = IO_IRQ_NR(IO_INR_SCC1A_TXERR),
464 [DEC_IRQ_SCC1A_TXDMA] = IO_IRQ_NR(IO_INR_SCC1A_TXDMA),
465};
466
467static int_ptr kn02ba_cpu_mask_nr_tbl[][2] __initdata = {
468 { { .i = DEC_CPU_IRQ_MASK(KN02BA_CPU_INR_CASCADE) },
469 { .p = kn02xa_io_int } },
470 { { .i = DEC_CPU_IRQ_MASK(KN02BA_CPU_INR_TC2) },
471 { .i = DEC_CPU_IRQ_NR(KN02BA_CPU_INR_TC2) } },
472 { { .i = DEC_CPU_IRQ_MASK(KN02BA_CPU_INR_TC1) },
473 { .i = DEC_CPU_IRQ_NR(KN02BA_CPU_INR_TC1) } },
474 { { .i = DEC_CPU_IRQ_MASK(KN02BA_CPU_INR_TC0) },
475 { .i = DEC_CPU_IRQ_NR(KN02BA_CPU_INR_TC0) } },
476 { { .i = DEC_CPU_IRQ_ALL },
477 { .p = cpu_all_int } },
478};
479
480static int_ptr kn02ba_asic_mask_nr_tbl[][2] __initdata = {
481 { { .i = IO_IRQ_MASK(KN02BA_IO_INR_BUS) },
482 { .i = IO_IRQ_NR(KN02BA_IO_INR_BUS) } },
483 { { .i = IO_IRQ_MASK(KN02BA_IO_INR_RTC) },
484 { .i = IO_IRQ_NR(KN02BA_IO_INR_RTC) } },
485 { { .i = IO_IRQ_DMA },
486 { .p = asic_dma_int } },
487 { { .i = IO_IRQ_MASK(KN02BA_IO_INR_SCC0) },
488 { .i = IO_IRQ_NR(KN02BA_IO_INR_SCC0) } },
489 { { .i = IO_IRQ_MASK(KN02BA_IO_INR_SCC1) },
490 { .i = IO_IRQ_NR(KN02BA_IO_INR_SCC1) } },
491 { { .i = IO_IRQ_MASK(KN02BA_IO_INR_ASC) },
492 { .i = IO_IRQ_NR(KN02BA_IO_INR_ASC) } },
493 { { .i = IO_IRQ_MASK(KN02BA_IO_INR_LANCE) },
494 { .i = IO_IRQ_NR(KN02BA_IO_INR_LANCE) } },
495 { { .i = IO_IRQ_ALL },
496 { .p = asic_all_int } },
497};
498
499static void __init dec_init_kn02ba(void)
500{
501 /* IRQ routing. */
502 memcpy(&dec_interrupt, &kn02ba_interrupt,
503 sizeof(kn02ba_interrupt));
504
505 /* CPU IRQ priorities. */
506 memcpy(&cpu_mask_nr_tbl, &kn02ba_cpu_mask_nr_tbl,
507 sizeof(kn02ba_cpu_mask_nr_tbl));
508
509 /* I/O ASIC IRQ priorities. */
510 memcpy(&asic_mask_nr_tbl, &kn02ba_asic_mask_nr_tbl,
511 sizeof(kn02ba_asic_mask_nr_tbl));
512
513 mips_cpu_irq_init();
514 init_ioasic_irqs(IO_IRQ_BASE);
515
516} /* dec_init_kn02ba */
517
518
519/*
520 * Machine-specific initialisation for KN02-CA, aka DS5000/xx,
521 * (xx = 20, 25, 33), aka MAXine. Also applies to KN04(-CA), aka
522 * DS5000/50, aka 4MAXine.
523 */
524static int kn02ca_interrupt[DEC_NR_INTS] __initdata = {
525 [DEC_IRQ_CASCADE] = DEC_CPU_IRQ_NR(KN02CA_CPU_INR_CASCADE),
526 [DEC_IRQ_AB_RECV] = IO_IRQ_NR(KN02CA_IO_INR_AB_RECV),
527 [DEC_IRQ_AB_XMIT] = IO_IRQ_NR(KN02CA_IO_INR_AB_XMIT),
528 [DEC_IRQ_DZ11] = -1,
529 [DEC_IRQ_ASC] = IO_IRQ_NR(KN02CA_IO_INR_ASC),
530 [DEC_IRQ_FLOPPY] = IO_IRQ_NR(KN02CA_IO_INR_FLOPPY),
531 [DEC_IRQ_FPU] = DEC_CPU_IRQ_NR(DEC_CPU_INR_FPU),
532 [DEC_IRQ_HALT] = DEC_CPU_IRQ_NR(KN02CA_CPU_INR_HALT),
533 [DEC_IRQ_ISDN] = IO_IRQ_NR(KN02CA_IO_INR_ISDN),
534 [DEC_IRQ_LANCE] = IO_IRQ_NR(KN02CA_IO_INR_LANCE),
535 [DEC_IRQ_BUS] = DEC_CPU_IRQ_NR(KN02CA_CPU_INR_BUS),
536 [DEC_IRQ_PSU] = -1,
537 [DEC_IRQ_RTC] = DEC_CPU_IRQ_NR(KN02CA_CPU_INR_RTC),
538 [DEC_IRQ_SCC0] = IO_IRQ_NR(KN02CA_IO_INR_SCC0),
539 [DEC_IRQ_SCC1] = -1,
540 [DEC_IRQ_SII] = -1,
541 [DEC_IRQ_TC0] = IO_IRQ_NR(KN02CA_IO_INR_TC0),
542 [DEC_IRQ_TC1] = IO_IRQ_NR(KN02CA_IO_INR_TC1),
543 [DEC_IRQ_TC2] = -1,
544 [DEC_IRQ_TIMER] = DEC_CPU_IRQ_NR(KN02CA_CPU_INR_TIMER),
545 [DEC_IRQ_VIDEO] = IO_IRQ_NR(KN02CA_IO_INR_VIDEO),
546 [DEC_IRQ_ASC_MERR] = IO_IRQ_NR(IO_INR_ASC_MERR),
547 [DEC_IRQ_ASC_ERR] = IO_IRQ_NR(IO_INR_ASC_ERR),
548 [DEC_IRQ_ASC_DMA] = IO_IRQ_NR(IO_INR_ASC_DMA),
549 [DEC_IRQ_FLOPPY_ERR] = IO_IRQ_NR(IO_INR_FLOPPY_ERR),
550 [DEC_IRQ_ISDN_ERR] = IO_IRQ_NR(IO_INR_ISDN_ERR),
551 [DEC_IRQ_ISDN_RXDMA] = IO_IRQ_NR(IO_INR_ISDN_RXDMA),
552 [DEC_IRQ_ISDN_TXDMA] = IO_IRQ_NR(IO_INR_ISDN_TXDMA),
553 [DEC_IRQ_LANCE_MERR] = IO_IRQ_NR(IO_INR_LANCE_MERR),
554 [DEC_IRQ_SCC0A_RXERR] = IO_IRQ_NR(IO_INR_SCC0A_RXERR),
555 [DEC_IRQ_SCC0A_RXDMA] = IO_IRQ_NR(IO_INR_SCC0A_RXDMA),
556 [DEC_IRQ_SCC0A_TXERR] = IO_IRQ_NR(IO_INR_SCC0A_TXERR),
557 [DEC_IRQ_SCC0A_TXDMA] = IO_IRQ_NR(IO_INR_SCC0A_TXDMA),
558 [DEC_IRQ_AB_RXERR] = IO_IRQ_NR(IO_INR_AB_RXERR),
559 [DEC_IRQ_AB_RXDMA] = IO_IRQ_NR(IO_INR_AB_RXDMA),
560 [DEC_IRQ_AB_TXERR] = IO_IRQ_NR(IO_INR_AB_TXERR),
561 [DEC_IRQ_AB_TXDMA] = IO_IRQ_NR(IO_INR_AB_TXDMA),
562 [DEC_IRQ_SCC1A_RXERR] = -1,
563 [DEC_IRQ_SCC1A_RXDMA] = -1,
564 [DEC_IRQ_SCC1A_TXERR] = -1,
565 [DEC_IRQ_SCC1A_TXDMA] = -1,
566};
567
568static int_ptr kn02ca_cpu_mask_nr_tbl[][2] __initdata = {
569 { { .i = DEC_CPU_IRQ_MASK(KN02CA_CPU_INR_BUS) },
570 { .i = DEC_CPU_IRQ_NR(KN02CA_CPU_INR_BUS) } },
571 { { .i = DEC_CPU_IRQ_MASK(KN02CA_CPU_INR_RTC) },
572 { .i = DEC_CPU_IRQ_NR(KN02CA_CPU_INR_RTC) } },
573 { { .i = DEC_CPU_IRQ_MASK(KN02CA_CPU_INR_CASCADE) },
574 { .p = kn02xa_io_int } },
575 { { .i = DEC_CPU_IRQ_ALL },
576 { .p = cpu_all_int } },
577};
578
579static int_ptr kn02ca_asic_mask_nr_tbl[][2] __initdata = {
580 { { .i = IO_IRQ_DMA },
581 { .p = asic_dma_int } },
582 { { .i = IO_IRQ_MASK(KN02CA_IO_INR_SCC0) },
583 { .i = IO_IRQ_NR(KN02CA_IO_INR_SCC0) } },
584 { { .i = IO_IRQ_MASK(KN02CA_IO_INR_ASC) },
585 { .i = IO_IRQ_NR(KN02CA_IO_INR_ASC) } },
586 { { .i = IO_IRQ_MASK(KN02CA_IO_INR_LANCE) },
587 { .i = IO_IRQ_NR(KN02CA_IO_INR_LANCE) } },
588 { { .i = IO_IRQ_MASK(KN02CA_IO_INR_TC1) },
589 { .i = IO_IRQ_NR(KN02CA_IO_INR_TC1) } },
590 { { .i = IO_IRQ_MASK(KN02CA_IO_INR_TC0) },
591 { .i = IO_IRQ_NR(KN02CA_IO_INR_TC0) } },
592 { { .i = IO_IRQ_ALL },
593 { .p = asic_all_int } },
594};
595
596static void __init dec_init_kn02ca(void)
597{
598 /* IRQ routing. */
599 memcpy(&dec_interrupt, &kn02ca_interrupt,
600 sizeof(kn02ca_interrupt));
601
602 /* CPU IRQ priorities. */
603 memcpy(&cpu_mask_nr_tbl, &kn02ca_cpu_mask_nr_tbl,
604 sizeof(kn02ca_cpu_mask_nr_tbl));
605
606 /* I/O ASIC IRQ priorities. */
607 memcpy(&asic_mask_nr_tbl, &kn02ca_asic_mask_nr_tbl,
608 sizeof(kn02ca_asic_mask_nr_tbl));
609
610 mips_cpu_irq_init();
611 init_ioasic_irqs(IO_IRQ_BASE);
612
613} /* dec_init_kn02ca */
614
615
616/*
617 * Machine-specific initialisation for KN03, aka DS5000/240,
618 * aka 3max+ and DS5900, aka BIGmax. Also applies to KN05, aka
619 * DS5000/260, aka 4max+ and DS5900/260.
620 */
621static int kn03_interrupt[DEC_NR_INTS] __initdata = {
622 [DEC_IRQ_CASCADE] = DEC_CPU_IRQ_NR(KN03_CPU_INR_CASCADE),
623 [DEC_IRQ_AB_RECV] = -1,
624 [DEC_IRQ_AB_XMIT] = -1,
625 [DEC_IRQ_DZ11] = -1,
626 [DEC_IRQ_ASC] = IO_IRQ_NR(KN03_IO_INR_ASC),
627 [DEC_IRQ_FLOPPY] = -1,
628 [DEC_IRQ_FPU] = DEC_CPU_IRQ_NR(DEC_CPU_INR_FPU),
629 [DEC_IRQ_HALT] = DEC_CPU_IRQ_NR(KN03_CPU_INR_HALT),
630 [DEC_IRQ_ISDN] = -1,
631 [DEC_IRQ_LANCE] = IO_IRQ_NR(KN03_IO_INR_LANCE),
632 [DEC_IRQ_BUS] = DEC_CPU_IRQ_NR(KN03_CPU_INR_BUS),
633 [DEC_IRQ_PSU] = IO_IRQ_NR(KN03_IO_INR_PSU),
634 [DEC_IRQ_RTC] = DEC_CPU_IRQ_NR(KN03_CPU_INR_RTC),
635 [DEC_IRQ_SCC0] = IO_IRQ_NR(KN03_IO_INR_SCC0),
636 [DEC_IRQ_SCC1] = IO_IRQ_NR(KN03_IO_INR_SCC1),
637 [DEC_IRQ_SII] = -1,
638 [DEC_IRQ_TC0] = IO_IRQ_NR(KN03_IO_INR_TC0),
639 [DEC_IRQ_TC1] = IO_IRQ_NR(KN03_IO_INR_TC1),
640 [DEC_IRQ_TC2] = IO_IRQ_NR(KN03_IO_INR_TC2),
641 [DEC_IRQ_TIMER] = -1,
642 [DEC_IRQ_VIDEO] = -1,
643 [DEC_IRQ_ASC_MERR] = IO_IRQ_NR(IO_INR_ASC_MERR),
644 [DEC_IRQ_ASC_ERR] = IO_IRQ_NR(IO_INR_ASC_ERR),
645 [DEC_IRQ_ASC_DMA] = IO_IRQ_NR(IO_INR_ASC_DMA),
646 [DEC_IRQ_FLOPPY_ERR] = -1,
647 [DEC_IRQ_ISDN_ERR] = -1,
648 [DEC_IRQ_ISDN_RXDMA] = -1,
649 [DEC_IRQ_ISDN_TXDMA] = -1,
650 [DEC_IRQ_LANCE_MERR] = IO_IRQ_NR(IO_INR_LANCE_MERR),
651 [DEC_IRQ_SCC0A_RXERR] = IO_IRQ_NR(IO_INR_SCC0A_RXERR),
652 [DEC_IRQ_SCC0A_RXDMA] = IO_IRQ_NR(IO_INR_SCC0A_RXDMA),
653 [DEC_IRQ_SCC0A_TXERR] = IO_IRQ_NR(IO_INR_SCC0A_TXERR),
654 [DEC_IRQ_SCC0A_TXDMA] = IO_IRQ_NR(IO_INR_SCC0A_TXDMA),
655 [DEC_IRQ_AB_RXERR] = -1,
656 [DEC_IRQ_AB_RXDMA] = -1,
657 [DEC_IRQ_AB_TXERR] = -1,
658 [DEC_IRQ_AB_TXDMA] = -1,
659 [DEC_IRQ_SCC1A_RXERR] = IO_IRQ_NR(IO_INR_SCC1A_RXERR),
660 [DEC_IRQ_SCC1A_RXDMA] = IO_IRQ_NR(IO_INR_SCC1A_RXDMA),
661 [DEC_IRQ_SCC1A_TXERR] = IO_IRQ_NR(IO_INR_SCC1A_TXERR),
662 [DEC_IRQ_SCC1A_TXDMA] = IO_IRQ_NR(IO_INR_SCC1A_TXDMA),
663};
664
665static int_ptr kn03_cpu_mask_nr_tbl[][2] __initdata = {
666 { { .i = DEC_CPU_IRQ_MASK(KN03_CPU_INR_BUS) },
667 { .i = DEC_CPU_IRQ_NR(KN03_CPU_INR_BUS) } },
668 { { .i = DEC_CPU_IRQ_MASK(KN03_CPU_INR_RTC) },
669 { .i = DEC_CPU_IRQ_NR(KN03_CPU_INR_RTC) } },
670 { { .i = DEC_CPU_IRQ_MASK(KN03_CPU_INR_CASCADE) },
671 { .p = kn03_io_int } },
672 { { .i = DEC_CPU_IRQ_ALL },
673 { .p = cpu_all_int } },
674};
675
676static int_ptr kn03_asic_mask_nr_tbl[][2] __initdata = {
677 { { .i = IO_IRQ_DMA },
678 { .p = asic_dma_int } },
679 { { .i = IO_IRQ_MASK(KN03_IO_INR_SCC0) },
680 { .i = IO_IRQ_NR(KN03_IO_INR_SCC0) } },
681 { { .i = IO_IRQ_MASK(KN03_IO_INR_SCC1) },
682 { .i = IO_IRQ_NR(KN03_IO_INR_SCC1) } },
683 { { .i = IO_IRQ_MASK(KN03_IO_INR_ASC) },
684 { .i = IO_IRQ_NR(KN03_IO_INR_ASC) } },
685 { { .i = IO_IRQ_MASK(KN03_IO_INR_LANCE) },
686 { .i = IO_IRQ_NR(KN03_IO_INR_LANCE) } },
687 { { .i = IO_IRQ_MASK(KN03_IO_INR_TC2) },
688 { .i = IO_IRQ_NR(KN03_IO_INR_TC2) } },
689 { { .i = IO_IRQ_MASK(KN03_IO_INR_TC1) },
690 { .i = IO_IRQ_NR(KN03_IO_INR_TC1) } },
691 { { .i = IO_IRQ_MASK(KN03_IO_INR_TC0) },
692 { .i = IO_IRQ_NR(KN03_IO_INR_TC0) } },
693 { { .i = IO_IRQ_ALL },
694 { .p = asic_all_int } },
695};
696
697static void __init dec_init_kn03(void)
698{
699 /* IRQ routing. */
700 memcpy(&dec_interrupt, &kn03_interrupt,
701 sizeof(kn03_interrupt));
702
703 /* CPU IRQ priorities. */
704 memcpy(&cpu_mask_nr_tbl, &kn03_cpu_mask_nr_tbl,
705 sizeof(kn03_cpu_mask_nr_tbl));
706
707 /* I/O ASIC IRQ priorities. */
708 memcpy(&asic_mask_nr_tbl, &kn03_asic_mask_nr_tbl,
709 sizeof(kn03_asic_mask_nr_tbl));
710
711 mips_cpu_irq_init();
712 init_ioasic_irqs(IO_IRQ_BASE);
713
714} /* dec_init_kn03 */
715
716
717void __init arch_init_irq(void)
718{
719 switch (mips_machtype) {
720 case MACH_DS23100: /* DS2100/DS3100 Pmin/Pmax */
721 dec_init_kn01();
722 break;
723 case MACH_DS5100: /* DS5100 MIPSmate */
724 dec_init_kn230();
725 break;
726 case MACH_DS5000_200: /* DS5000/200 3max */
727 dec_init_kn02();
728 break;
729 case MACH_DS5000_1XX: /* DS5000/1xx 3min */
730 dec_init_kn02ba();
731 break;
732 case MACH_DS5000_2X0: /* DS5000/240 3max+ */
733 case MACH_DS5900: /* DS5900 bigmax */
734 dec_init_kn03();
735 break;
736 case MACH_DS5000_XX: /* Personal DS5000/xx */
737 dec_init_kn02ca();
738 break;
739 case MACH_DS5800: /* DS5800 Isis */
740 panic("Don't know how to set this up!");
741 break;
742 case MACH_DS5400: /* DS5400 MIPSfair */
743 panic("Don't know how to set this up!");
744 break;
745 case MACH_DS5500: /* DS5500 MIPSfair-2 */
746 panic("Don't know how to set this up!");
747 break;
748 }
749
750 /* Free the FPU interrupt if the exception is present. */
751 if (!cpu_has_nofpuex) {
752 cpu_fpu_mask = 0;
753 dec_interrupt[DEC_IRQ_FPU] = -1;
754 }
755 /* Free the halt interrupt unused on R4k systems. */
756 if (current_cpu_type() == CPU_R4000SC ||
757 current_cpu_type() == CPU_R4400SC)
758 dec_interrupt[DEC_IRQ_HALT] = -1;
759
760 /* Register board interrupts: FPU and cascade. */
761 if (dec_interrupt[DEC_IRQ_FPU] >= 0 && cpu_has_fpu) {
762 struct irq_desc *desc_fpu;
763 int irq_fpu;
764
765 irq_fpu = dec_interrupt[DEC_IRQ_FPU];
766 setup_irq(irq_fpu, &fpuirq);
767 desc_fpu = irq_to_desc(irq_fpu);
768 fpu_kstat_irq = this_cpu_ptr(desc_fpu->kstat_irqs);
769 }
770 if (dec_interrupt[DEC_IRQ_CASCADE] >= 0)
771 setup_irq(dec_interrupt[DEC_IRQ_CASCADE], &ioirq);
772
773 /* Register the bus error interrupt. */
774 if (dec_interrupt[DEC_IRQ_BUS] >= 0 && busirq.handler)
775 setup_irq(dec_interrupt[DEC_IRQ_BUS], &busirq);
776
777 /* Register the HALT interrupt. */
778 if (dec_interrupt[DEC_IRQ_HALT] >= 0)
779 setup_irq(dec_interrupt[DEC_IRQ_HALT], &haltirq);
780}
781
782asmlinkage unsigned int dec_irq_dispatch(unsigned int irq)
783{
784 do_IRQ(irq);
785 return 0;
786}