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authorYoichi Yuasa <yuasa@hh.iij4u.or.jp>2005-09-03 18:56:04 -0400
committerLinus Torvalds <torvalds@evo.osdl.org>2005-09-05 03:06:02 -0400
commit979934da9e7a0005bd9c8b1d7d00febb59ff67f7 (patch)
treee42728186c3efaccfa9da1dd2103090846d0c9fc /arch
parent006cfb51ad12047497a2a5ad796fb8914a1bc487 (diff)
[PATCH] mips: update IRQ handling for vr41xx
This patch has updated IRQ handling for vr41xx. o added common IRQ dispatch o changed IRQ number in int-handler.S o added resource management to icu.c Signed-off-by: Yoichi Yuasa <yuasa@hh.iij4u.or.jp> Cc: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch')
-rw-r--r--arch/mips/vr41xx/common/Makefile2
-rw-r--r--arch/mips/vr41xx/common/icu.c270
-rw-r--r--arch/mips/vr41xx/common/int-handler.S10
-rw-r--r--arch/mips/vr41xx/common/irq.c94
4 files changed, 226 insertions, 150 deletions
diff --git a/arch/mips/vr41xx/common/Makefile b/arch/mips/vr41xx/common/Makefile
index fa98ef3855bc..e5039031b69d 100644
--- a/arch/mips/vr41xx/common/Makefile
+++ b/arch/mips/vr41xx/common/Makefile
@@ -2,7 +2,7 @@
2# Makefile for common code of the NEC VR4100 series. 2# Makefile for common code of the NEC VR4100 series.
3# 3#
4 4
5obj-y += bcu.o cmu.o icu.o init.o int-handler.o pmu.o 5obj-y += bcu.o cmu.o icu.o init.o int-handler.o irq.o pmu.o
6obj-$(CONFIG_VRC4173) += vrc4173.o 6obj-$(CONFIG_VRC4173) += vrc4173.o
7 7
8EXTRA_AFLAGS := $(CFLAGS) 8EXTRA_AFLAGS := $(CFLAGS)
diff --git a/arch/mips/vr41xx/common/icu.c b/arch/mips/vr41xx/common/icu.c
index c842661144cb..0b73c5ab3c0c 100644
--- a/arch/mips/vr41xx/common/icu.c
+++ b/arch/mips/vr41xx/common/icu.c
@@ -3,8 +3,7 @@
3 * 3 *
4 * Copyright (C) 2001-2002 MontaVista Software Inc. 4 * Copyright (C) 2001-2002 MontaVista Software Inc.
5 * Author: Yoichi Yuasa <yyuasa@mvista.com or source@mvista.com> 5 * Author: Yoichi Yuasa <yyuasa@mvista.com or source@mvista.com>
6 * Copyright (C) 2003-2004 Yoichi Yuasa <yuasa@hh.iij4u.or.jp> 6 * Copyright (C) 2003-2005 Yoichi Yuasa <yuasa@hh.iij4u.or.jp>
7 * Copyright (C) 2005 Ralf Baechle (ralf@linux-mips.org)
8 * 7 *
9 * This program is free software; you can redistribute it and/or modify 8 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by 9 * it under the terms of the GNU General Public License as published by
@@ -31,7 +30,7 @@
31 */ 30 */
32#include <linux/errno.h> 31#include <linux/errno.h>
33#include <linux/init.h> 32#include <linux/init.h>
34#include <linux/interrupt.h> 33#include <linux/ioport.h>
35#include <linux/irq.h> 34#include <linux/irq.h>
36#include <linux/module.h> 35#include <linux/module.h>
37#include <linux/smp.h> 36#include <linux/smp.h>
@@ -39,34 +38,24 @@
39 38
40#include <asm/cpu.h> 39#include <asm/cpu.h>
41#include <asm/io.h> 40#include <asm/io.h>
42#include <asm/irq.h>
43#include <asm/irq_cpu.h>
44#include <asm/vr41xx/vr41xx.h> 41#include <asm/vr41xx/vr41xx.h>
45 42
46extern asmlinkage void vr41xx_handle_interrupt(void); 43static void __iomem *icu1_base;
47 44static void __iomem *icu2_base;
48extern void init_vr41xx_giuint_irq(void);
49extern void giuint_irq_dispatch(struct pt_regs *regs);
50
51static uint32_t icu1_base;
52static uint32_t icu2_base;
53
54static struct irqaction icu_cascade = {
55 .handler = no_action,
56 .mask = CPU_MASK_NONE,
57 .name = "cascade",
58};
59 45
60static unsigned char sysint1_assign[16] = { 46static unsigned char sysint1_assign[16] = {
61 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }; 47 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
62static unsigned char sysint2_assign[16] = { 48static unsigned char sysint2_assign[16] = {
63 2, 0, 3, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }; 49 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
64 50
65#define SYSINT1REG_TYPE1 KSEG1ADDR(0x0b000080) 51#define ICU1_TYPE1_BASE 0x0b000080UL
66#define SYSINT2REG_TYPE1 KSEG1ADDR(0x0b000200) 52#define ICU2_TYPE1_BASE 0x0b000200UL
67 53
68#define SYSINT1REG_TYPE2 KSEG1ADDR(0x0f000080) 54#define ICU1_TYPE2_BASE 0x0f000080UL
69#define SYSINT2REG_TYPE2 KSEG1ADDR(0x0f0000a0) 55#define ICU2_TYPE2_BASE 0x0f0000a0UL
56
57#define ICU1_SIZE 0x20
58#define ICU2_SIZE 0x1c
70 59
71#define SYSINT1REG 0x00 60#define SYSINT1REG 0x00
72#define PIUINTREG 0x02 61#define PIUINTREG 0x02
@@ -106,61 +95,61 @@ static unsigned char sysint2_assign[16] = {
106#define SYSINT1_IRQ_TO_PIN(x) ((x) - SYSINT1_IRQ_BASE) /* Pin 0-15 */ 95#define SYSINT1_IRQ_TO_PIN(x) ((x) - SYSINT1_IRQ_BASE) /* Pin 0-15 */
107#define SYSINT2_IRQ_TO_PIN(x) ((x) - SYSINT2_IRQ_BASE) /* Pin 0-15 */ 96#define SYSINT2_IRQ_TO_PIN(x) ((x) - SYSINT2_IRQ_BASE) /* Pin 0-15 */
108 97
109#define read_icu1(offset) readw(icu1_base + (offset)) 98#define INT_TO_IRQ(x) ((x) + 2) /* Int0-4 -> IRQ2-6 */
110#define write_icu1(val, offset) writew((val), icu1_base + (offset)) 99
100#define icu1_read(offset) readw(icu1_base + (offset))
101#define icu1_write(offset, value) writew((value), icu1_base + (offset))
111 102
112#define read_icu2(offset) readw(icu2_base + (offset)) 103#define icu2_read(offset) readw(icu2_base + (offset))
113#define write_icu2(val, offset) writew((val), icu2_base + (offset)) 104#define icu2_write(offset, value) writew((value), icu2_base + (offset))
114 105
115#define INTASSIGN_MAX 4 106#define INTASSIGN_MAX 4
116#define INTASSIGN_MASK 0x0007 107#define INTASSIGN_MASK 0x0007
117 108
118static inline uint16_t set_icu1(uint8_t offset, uint16_t set) 109static inline uint16_t icu1_set(uint8_t offset, uint16_t set)
119{ 110{
120 uint16_t res; 111 uint16_t data;
121 112
122 res = read_icu1(offset); 113 data = icu1_read(offset);
123 res |= set; 114 data |= set;
124 write_icu1(res, offset); 115 icu1_write(offset, data);
125 116
126 return res; 117 return data;
127} 118}
128 119
129static inline uint16_t clear_icu1(uint8_t offset, uint16_t clear) 120static inline uint16_t icu1_clear(uint8_t offset, uint16_t clear)
130{ 121{
131 uint16_t res; 122 uint16_t data;
132 123
133 res = read_icu1(offset); 124 data = icu1_read(offset);
134 res &= ~clear; 125 data &= ~clear;
135 write_icu1(res, offset); 126 icu1_write(offset, data);
136 127
137 return res; 128 return data;
138} 129}
139 130
140static inline uint16_t set_icu2(uint8_t offset, uint16_t set) 131static inline uint16_t icu2_set(uint8_t offset, uint16_t set)
141{ 132{
142 uint16_t res; 133 uint16_t data;
143 134
144 res = read_icu2(offset); 135 data = icu2_read(offset);
145 res |= set; 136 data |= set;
146 write_icu2(res, offset); 137 icu2_write(offset, data);
147 138
148 return res; 139 return data;
149} 140}
150 141
151static inline uint16_t clear_icu2(uint8_t offset, uint16_t clear) 142static inline uint16_t icu2_clear(uint8_t offset, uint16_t clear)
152{ 143{
153 uint16_t res; 144 uint16_t data;
154 145
155 res = read_icu2(offset); 146 data = icu2_read(offset);
156 res &= ~clear; 147 data &= ~clear;
157 write_icu2(res, offset); 148 icu2_write(offset, data);
158 149
159 return res; 150 return data;
160} 151}
161 152
162/*=======================================================================*/
163
164void vr41xx_enable_piuint(uint16_t mask) 153void vr41xx_enable_piuint(uint16_t mask)
165{ 154{
166 irq_desc_t *desc = irq_desc + PIU_IRQ; 155 irq_desc_t *desc = irq_desc + PIU_IRQ;
@@ -169,7 +158,7 @@ void vr41xx_enable_piuint(uint16_t mask)
169 if (current_cpu_data.cputype == CPU_VR4111 || 158 if (current_cpu_data.cputype == CPU_VR4111 ||
170 current_cpu_data.cputype == CPU_VR4121) { 159 current_cpu_data.cputype == CPU_VR4121) {
171 spin_lock_irqsave(&desc->lock, flags); 160 spin_lock_irqsave(&desc->lock, flags);
172 set_icu1(MPIUINTREG, mask); 161 icu1_set(MPIUINTREG, mask);
173 spin_unlock_irqrestore(&desc->lock, flags); 162 spin_unlock_irqrestore(&desc->lock, flags);
174 } 163 }
175} 164}
@@ -184,7 +173,7 @@ void vr41xx_disable_piuint(uint16_t mask)
184 if (current_cpu_data.cputype == CPU_VR4111 || 173 if (current_cpu_data.cputype == CPU_VR4111 ||
185 current_cpu_data.cputype == CPU_VR4121) { 174 current_cpu_data.cputype == CPU_VR4121) {
186 spin_lock_irqsave(&desc->lock, flags); 175 spin_lock_irqsave(&desc->lock, flags);
187 clear_icu1(MPIUINTREG, mask); 176 icu1_clear(MPIUINTREG, mask);
188 spin_unlock_irqrestore(&desc->lock, flags); 177 spin_unlock_irqrestore(&desc->lock, flags);
189 } 178 }
190} 179}
@@ -199,7 +188,7 @@ void vr41xx_enable_aiuint(uint16_t mask)
199 if (current_cpu_data.cputype == CPU_VR4111 || 188 if (current_cpu_data.cputype == CPU_VR4111 ||
200 current_cpu_data.cputype == CPU_VR4121) { 189 current_cpu_data.cputype == CPU_VR4121) {
201 spin_lock_irqsave(&desc->lock, flags); 190 spin_lock_irqsave(&desc->lock, flags);
202 set_icu1(MAIUINTREG, mask); 191 icu1_set(MAIUINTREG, mask);
203 spin_unlock_irqrestore(&desc->lock, flags); 192 spin_unlock_irqrestore(&desc->lock, flags);
204 } 193 }
205} 194}
@@ -214,7 +203,7 @@ void vr41xx_disable_aiuint(uint16_t mask)
214 if (current_cpu_data.cputype == CPU_VR4111 || 203 if (current_cpu_data.cputype == CPU_VR4111 ||
215 current_cpu_data.cputype == CPU_VR4121) { 204 current_cpu_data.cputype == CPU_VR4121) {
216 spin_lock_irqsave(&desc->lock, flags); 205 spin_lock_irqsave(&desc->lock, flags);
217 clear_icu1(MAIUINTREG, mask); 206 icu1_clear(MAIUINTREG, mask);
218 spin_unlock_irqrestore(&desc->lock, flags); 207 spin_unlock_irqrestore(&desc->lock, flags);
219 } 208 }
220} 209}
@@ -229,7 +218,7 @@ void vr41xx_enable_kiuint(uint16_t mask)
229 if (current_cpu_data.cputype == CPU_VR4111 || 218 if (current_cpu_data.cputype == CPU_VR4111 ||
230 current_cpu_data.cputype == CPU_VR4121) { 219 current_cpu_data.cputype == CPU_VR4121) {
231 spin_lock_irqsave(&desc->lock, flags); 220 spin_lock_irqsave(&desc->lock, flags);
232 set_icu1(MKIUINTREG, mask); 221 icu1_set(MKIUINTREG, mask);
233 spin_unlock_irqrestore(&desc->lock, flags); 222 spin_unlock_irqrestore(&desc->lock, flags);
234 } 223 }
235} 224}
@@ -244,7 +233,7 @@ void vr41xx_disable_kiuint(uint16_t mask)
244 if (current_cpu_data.cputype == CPU_VR4111 || 233 if (current_cpu_data.cputype == CPU_VR4111 ||
245 current_cpu_data.cputype == CPU_VR4121) { 234 current_cpu_data.cputype == CPU_VR4121) {
246 spin_lock_irqsave(&desc->lock, flags); 235 spin_lock_irqsave(&desc->lock, flags);
247 clear_icu1(MKIUINTREG, mask); 236 icu1_clear(MKIUINTREG, mask);
248 spin_unlock_irqrestore(&desc->lock, flags); 237 spin_unlock_irqrestore(&desc->lock, flags);
249 } 238 }
250} 239}
@@ -257,7 +246,7 @@ void vr41xx_enable_dsiuint(uint16_t mask)
257 unsigned long flags; 246 unsigned long flags;
258 247
259 spin_lock_irqsave(&desc->lock, flags); 248 spin_lock_irqsave(&desc->lock, flags);
260 set_icu1(MDSIUINTREG, mask); 249 icu1_set(MDSIUINTREG, mask);
261 spin_unlock_irqrestore(&desc->lock, flags); 250 spin_unlock_irqrestore(&desc->lock, flags);
262} 251}
263 252
@@ -269,7 +258,7 @@ void vr41xx_disable_dsiuint(uint16_t mask)
269 unsigned long flags; 258 unsigned long flags;
270 259
271 spin_lock_irqsave(&desc->lock, flags); 260 spin_lock_irqsave(&desc->lock, flags);
272 clear_icu1(MDSIUINTREG, mask); 261 icu1_clear(MDSIUINTREG, mask);
273 spin_unlock_irqrestore(&desc->lock, flags); 262 spin_unlock_irqrestore(&desc->lock, flags);
274} 263}
275 264
@@ -281,7 +270,7 @@ void vr41xx_enable_firint(uint16_t mask)
281 unsigned long flags; 270 unsigned long flags;
282 271
283 spin_lock_irqsave(&desc->lock, flags); 272 spin_lock_irqsave(&desc->lock, flags);
284 set_icu2(MFIRINTREG, mask); 273 icu2_set(MFIRINTREG, mask);
285 spin_unlock_irqrestore(&desc->lock, flags); 274 spin_unlock_irqrestore(&desc->lock, flags);
286} 275}
287 276
@@ -293,7 +282,7 @@ void vr41xx_disable_firint(uint16_t mask)
293 unsigned long flags; 282 unsigned long flags;
294 283
295 spin_lock_irqsave(&desc->lock, flags); 284 spin_lock_irqsave(&desc->lock, flags);
296 clear_icu2(MFIRINTREG, mask); 285 icu2_clear(MFIRINTREG, mask);
297 spin_unlock_irqrestore(&desc->lock, flags); 286 spin_unlock_irqrestore(&desc->lock, flags);
298} 287}
299 288
@@ -308,7 +297,7 @@ void vr41xx_enable_pciint(void)
308 current_cpu_data.cputype == CPU_VR4131 || 297 current_cpu_data.cputype == CPU_VR4131 ||
309 current_cpu_data.cputype == CPU_VR4133) { 298 current_cpu_data.cputype == CPU_VR4133) {
310 spin_lock_irqsave(&desc->lock, flags); 299 spin_lock_irqsave(&desc->lock, flags);
311 write_icu2(PCIINT0, MPCIINTREG); 300 icu2_write(MPCIINTREG, PCIINT0);
312 spin_unlock_irqrestore(&desc->lock, flags); 301 spin_unlock_irqrestore(&desc->lock, flags);
313 } 302 }
314} 303}
@@ -324,7 +313,7 @@ void vr41xx_disable_pciint(void)
324 current_cpu_data.cputype == CPU_VR4131 || 313 current_cpu_data.cputype == CPU_VR4131 ||
325 current_cpu_data.cputype == CPU_VR4133) { 314 current_cpu_data.cputype == CPU_VR4133) {
326 spin_lock_irqsave(&desc->lock, flags); 315 spin_lock_irqsave(&desc->lock, flags);
327 write_icu2(0, MPCIINTREG); 316 icu2_write(MPCIINTREG, 0);
328 spin_unlock_irqrestore(&desc->lock, flags); 317 spin_unlock_irqrestore(&desc->lock, flags);
329 } 318 }
330} 319}
@@ -340,7 +329,7 @@ void vr41xx_enable_scuint(void)
340 current_cpu_data.cputype == CPU_VR4131 || 329 current_cpu_data.cputype == CPU_VR4131 ||
341 current_cpu_data.cputype == CPU_VR4133) { 330 current_cpu_data.cputype == CPU_VR4133) {
342 spin_lock_irqsave(&desc->lock, flags); 331 spin_lock_irqsave(&desc->lock, flags);
343 write_icu2(SCUINT0, MSCUINTREG); 332 icu2_write(MSCUINTREG, SCUINT0);
344 spin_unlock_irqrestore(&desc->lock, flags); 333 spin_unlock_irqrestore(&desc->lock, flags);
345 } 334 }
346} 335}
@@ -356,7 +345,7 @@ void vr41xx_disable_scuint(void)
356 current_cpu_data.cputype == CPU_VR4131 || 345 current_cpu_data.cputype == CPU_VR4131 ||
357 current_cpu_data.cputype == CPU_VR4133) { 346 current_cpu_data.cputype == CPU_VR4133) {
358 spin_lock_irqsave(&desc->lock, flags); 347 spin_lock_irqsave(&desc->lock, flags);
359 write_icu2(0, MSCUINTREG); 348 icu2_write(MSCUINTREG, 0);
360 spin_unlock_irqrestore(&desc->lock, flags); 349 spin_unlock_irqrestore(&desc->lock, flags);
361 } 350 }
362} 351}
@@ -372,7 +361,7 @@ void vr41xx_enable_csiint(uint16_t mask)
372 current_cpu_data.cputype == CPU_VR4131 || 361 current_cpu_data.cputype == CPU_VR4131 ||
373 current_cpu_data.cputype == CPU_VR4133) { 362 current_cpu_data.cputype == CPU_VR4133) {
374 spin_lock_irqsave(&desc->lock, flags); 363 spin_lock_irqsave(&desc->lock, flags);
375 set_icu2(MCSIINTREG, mask); 364 icu2_set(MCSIINTREG, mask);
376 spin_unlock_irqrestore(&desc->lock, flags); 365 spin_unlock_irqrestore(&desc->lock, flags);
377 } 366 }
378} 367}
@@ -388,7 +377,7 @@ void vr41xx_disable_csiint(uint16_t mask)
388 current_cpu_data.cputype == CPU_VR4131 || 377 current_cpu_data.cputype == CPU_VR4131 ||
389 current_cpu_data.cputype == CPU_VR4133) { 378 current_cpu_data.cputype == CPU_VR4133) {
390 spin_lock_irqsave(&desc->lock, flags); 379 spin_lock_irqsave(&desc->lock, flags);
391 clear_icu2(MCSIINTREG, mask); 380 icu2_clear(MCSIINTREG, mask);
392 spin_unlock_irqrestore(&desc->lock, flags); 381 spin_unlock_irqrestore(&desc->lock, flags);
393 } 382 }
394} 383}
@@ -404,7 +393,7 @@ void vr41xx_enable_bcuint(void)
404 current_cpu_data.cputype == CPU_VR4131 || 393 current_cpu_data.cputype == CPU_VR4131 ||
405 current_cpu_data.cputype == CPU_VR4133) { 394 current_cpu_data.cputype == CPU_VR4133) {
406 spin_lock_irqsave(&desc->lock, flags); 395 spin_lock_irqsave(&desc->lock, flags);
407 write_icu2(BCUINTR, MBCUINTREG); 396 icu2_write(MBCUINTREG, BCUINTR);
408 spin_unlock_irqrestore(&desc->lock, flags); 397 spin_unlock_irqrestore(&desc->lock, flags);
409 } 398 }
410} 399}
@@ -420,30 +409,28 @@ void vr41xx_disable_bcuint(void)
420 current_cpu_data.cputype == CPU_VR4131 || 409 current_cpu_data.cputype == CPU_VR4131 ||
421 current_cpu_data.cputype == CPU_VR4133) { 410 current_cpu_data.cputype == CPU_VR4133) {
422 spin_lock_irqsave(&desc->lock, flags); 411 spin_lock_irqsave(&desc->lock, flags);
423 write_icu2(0, MBCUINTREG); 412 icu2_write(MBCUINTREG, 0);
424 spin_unlock_irqrestore(&desc->lock, flags); 413 spin_unlock_irqrestore(&desc->lock, flags);
425 } 414 }
426} 415}
427 416
428EXPORT_SYMBOL(vr41xx_disable_bcuint); 417EXPORT_SYMBOL(vr41xx_disable_bcuint);
429 418
430/*=======================================================================*/
431
432static unsigned int startup_sysint1_irq(unsigned int irq) 419static unsigned int startup_sysint1_irq(unsigned int irq)
433{ 420{
434 set_icu1(MSYSINT1REG, (uint16_t)1 << SYSINT1_IRQ_TO_PIN(irq)); 421 icu1_set(MSYSINT1REG, 1 << SYSINT1_IRQ_TO_PIN(irq));
435 422
436 return 0; /* never anything pending */ 423 return 0; /* never anything pending */
437} 424}
438 425
439static void shutdown_sysint1_irq(unsigned int irq) 426static void shutdown_sysint1_irq(unsigned int irq)
440{ 427{
441 clear_icu1(MSYSINT1REG, (uint16_t)1 << SYSINT1_IRQ_TO_PIN(irq)); 428 icu1_clear(MSYSINT1REG, 1 << SYSINT1_IRQ_TO_PIN(irq));
442} 429}
443 430
444static void enable_sysint1_irq(unsigned int irq) 431static void enable_sysint1_irq(unsigned int irq)
445{ 432{
446 set_icu1(MSYSINT1REG, (uint16_t)1 << SYSINT1_IRQ_TO_PIN(irq)); 433 icu1_set(MSYSINT1REG, 1 << SYSINT1_IRQ_TO_PIN(irq));
447} 434}
448 435
449#define disable_sysint1_irq shutdown_sysint1_irq 436#define disable_sysint1_irq shutdown_sysint1_irq
@@ -452,7 +439,7 @@ static void enable_sysint1_irq(unsigned int irq)
452static void end_sysint1_irq(unsigned int irq) 439static void end_sysint1_irq(unsigned int irq)
453{ 440{
454 if (!(irq_desc[irq].status & (IRQ_DISABLED | IRQ_INPROGRESS))) 441 if (!(irq_desc[irq].status & (IRQ_DISABLED | IRQ_INPROGRESS)))
455 set_icu1(MSYSINT1REG, (uint16_t)1 << SYSINT1_IRQ_TO_PIN(irq)); 442 icu1_set(MSYSINT1REG, 1 << SYSINT1_IRQ_TO_PIN(irq));
456} 443}
457 444
458static struct hw_interrupt_type sysint1_irq_type = { 445static struct hw_interrupt_type sysint1_irq_type = {
@@ -465,23 +452,21 @@ static struct hw_interrupt_type sysint1_irq_type = {
465 .end = end_sysint1_irq, 452 .end = end_sysint1_irq,
466}; 453};
467 454
468/*=======================================================================*/
469
470static unsigned int startup_sysint2_irq(unsigned int irq) 455static unsigned int startup_sysint2_irq(unsigned int irq)
471{ 456{
472 set_icu2(MSYSINT2REG, (uint16_t)1 << SYSINT2_IRQ_TO_PIN(irq)); 457 icu2_set(MSYSINT2REG, 1 << SYSINT2_IRQ_TO_PIN(irq));
473 458
474 return 0; /* never anything pending */ 459 return 0; /* never anything pending */
475} 460}
476 461
477static void shutdown_sysint2_irq(unsigned int irq) 462static void shutdown_sysint2_irq(unsigned int irq)
478{ 463{
479 clear_icu2(MSYSINT2REG, (uint16_t)1 << SYSINT2_IRQ_TO_PIN(irq)); 464 icu2_clear(MSYSINT2REG, 1 << SYSINT2_IRQ_TO_PIN(irq));
480} 465}
481 466
482static void enable_sysint2_irq(unsigned int irq) 467static void enable_sysint2_irq(unsigned int irq)
483{ 468{
484 set_icu2(MSYSINT2REG, (uint16_t)1 << SYSINT2_IRQ_TO_PIN(irq)); 469 icu2_set(MSYSINT2REG, 1 << SYSINT2_IRQ_TO_PIN(irq));
485} 470}
486 471
487#define disable_sysint2_irq shutdown_sysint2_irq 472#define disable_sysint2_irq shutdown_sysint2_irq
@@ -490,7 +475,7 @@ static void enable_sysint2_irq(unsigned int irq)
490static void end_sysint2_irq(unsigned int irq) 475static void end_sysint2_irq(unsigned int irq)
491{ 476{
492 if (!(irq_desc[irq].status & (IRQ_DISABLED | IRQ_INPROGRESS))) 477 if (!(irq_desc[irq].status & (IRQ_DISABLED | IRQ_INPROGRESS)))
493 set_icu2(MSYSINT2REG, (uint16_t)1 << SYSINT2_IRQ_TO_PIN(irq)); 478 icu2_set(MSYSINT2REG, 1 << SYSINT2_IRQ_TO_PIN(irq));
494} 479}
495 480
496static struct hw_interrupt_type sysint2_irq_type = { 481static struct hw_interrupt_type sysint2_irq_type = {
@@ -503,8 +488,6 @@ static struct hw_interrupt_type sysint2_irq_type = {
503 .end = end_sysint2_irq, 488 .end = end_sysint2_irq,
504}; 489};
505 490
506/*=======================================================================*/
507
508static inline int set_sysint1_assign(unsigned int irq, unsigned char assign) 491static inline int set_sysint1_assign(unsigned int irq, unsigned char assign)
509{ 492{
510 irq_desc_t *desc = irq_desc + irq; 493 irq_desc_t *desc = irq_desc + irq;
@@ -515,8 +498,8 @@ static inline int set_sysint1_assign(unsigned int irq, unsigned char assign)
515 498
516 spin_lock_irq(&desc->lock); 499 spin_lock_irq(&desc->lock);
517 500
518 intassign0 = read_icu1(INTASSIGN0); 501 intassign0 = icu1_read(INTASSIGN0);
519 intassign1 = read_icu1(INTASSIGN1); 502 intassign1 = icu1_read(INTASSIGN1);
520 503
521 switch (pin) { 504 switch (pin) {
522 case 0: 505 case 0:
@@ -556,8 +539,8 @@ static inline int set_sysint1_assign(unsigned int irq, unsigned char assign)
556 } 539 }
557 540
558 sysint1_assign[pin] = assign; 541 sysint1_assign[pin] = assign;
559 write_icu1(intassign0, INTASSIGN0); 542 icu1_write(INTASSIGN0, intassign0);
560 write_icu1(intassign1, INTASSIGN1); 543 icu1_write(INTASSIGN1, intassign1);
561 544
562 spin_unlock_irq(&desc->lock); 545 spin_unlock_irq(&desc->lock);
563 546
@@ -574,8 +557,8 @@ static inline int set_sysint2_assign(unsigned int irq, unsigned char assign)
574 557
575 spin_lock_irq(&desc->lock); 558 spin_lock_irq(&desc->lock);
576 559
577 intassign2 = read_icu1(INTASSIGN2); 560 intassign2 = icu1_read(INTASSIGN2);
578 intassign3 = read_icu1(INTASSIGN3); 561 intassign3 = icu1_read(INTASSIGN3);
579 562
580 switch (pin) { 563 switch (pin) {
581 case 0: 564 case 0:
@@ -623,8 +606,8 @@ static inline int set_sysint2_assign(unsigned int irq, unsigned char assign)
623 } 606 }
624 607
625 sysint2_assign[pin] = assign; 608 sysint2_assign[pin] = assign;
626 write_icu1(intassign2, INTASSIGN2); 609 icu1_write(INTASSIGN2, intassign2);
627 write_icu1(intassign3, INTASSIGN3); 610 icu1_write(INTASSIGN3, intassign3);
628 611
629 spin_unlock_irq(&desc->lock); 612 spin_unlock_irq(&desc->lock);
630 613
@@ -651,88 +634,92 @@ int vr41xx_set_intassign(unsigned int irq, unsigned char intassign)
651 634
652EXPORT_SYMBOL(vr41xx_set_intassign); 635EXPORT_SYMBOL(vr41xx_set_intassign);
653 636
654/*=======================================================================*/ 637static int icu_get_irq(unsigned int irq, struct pt_regs *regs)
655
656asmlinkage void irq_dispatch(unsigned char intnum, struct pt_regs *regs)
657{ 638{
658 uint16_t pend1, pend2; 639 uint16_t pend1, pend2;
659 uint16_t mask1, mask2; 640 uint16_t mask1, mask2;
660 int i; 641 int i;
661 642
662 pend1 = read_icu1(SYSINT1REG); 643 pend1 = icu1_read(SYSINT1REG);
663 mask1 = read_icu1(MSYSINT1REG); 644 mask1 = icu1_read(MSYSINT1REG);
664 645
665 pend2 = read_icu2(SYSINT2REG); 646 pend2 = icu2_read(SYSINT2REG);
666 mask2 = read_icu2(MSYSINT2REG); 647 mask2 = icu2_read(MSYSINT2REG);
667 648
668 mask1 &= pend1; 649 mask1 &= pend1;
669 mask2 &= pend2; 650 mask2 &= pend2;
670 651
671 if (mask1) { 652 if (mask1) {
672 for (i = 0; i < 16; i++) { 653 for (i = 0; i < 16; i++) {
673 if (intnum == sysint1_assign[i] && 654 if (irq == INT_TO_IRQ(sysint1_assign[i]) && (mask1 & (1 << i)))
674 (mask1 & ((uint16_t)1 << i))) { 655 return SYSINT1_IRQ(i);
675 if (i == 8)
676 giuint_irq_dispatch(regs);
677 else
678 do_IRQ(SYSINT1_IRQ(i), regs);
679 return;
680 }
681 } 656 }
682 } 657 }
683 658
684 if (mask2) { 659 if (mask2) {
685 for (i = 0; i < 16; i++) { 660 for (i = 0; i < 16; i++) {
686 if (intnum == sysint2_assign[i] && 661 if (irq == INT_TO_IRQ(sysint2_assign[i]) && (mask2 & (1 << i)))
687 (mask2 & ((uint16_t)1 << i))) { 662 return SYSINT2_IRQ(i);
688 do_IRQ(SYSINT2_IRQ(i), regs);
689 return;
690 }
691 } 663 }
692 } 664 }
693 665
694 printk(KERN_ERR "spurious ICU interrupt: %04x,%04x\n", pend1, pend2); 666 printk(KERN_ERR "spurious ICU interrupt: %04x,%04x\n", pend1, pend2);
695 667
696 atomic_inc(&irq_err_count); 668 atomic_inc(&irq_err_count);
697}
698 669
699/*=======================================================================*/ 670 return -1;
671}
700 672
701static int __init vr41xx_icu_init(void) 673static int __init vr41xx_icu_init(void)
702{ 674{
675 unsigned long icu1_start, icu2_start;
676 int i;
677
703 switch (current_cpu_data.cputype) { 678 switch (current_cpu_data.cputype) {
704 case CPU_VR4111: 679 case CPU_VR4111:
705 case CPU_VR4121: 680 case CPU_VR4121:
706 icu1_base = SYSINT1REG_TYPE1; 681 icu1_start = ICU1_TYPE1_BASE;
707 icu2_base = SYSINT2REG_TYPE1; 682 icu2_start = ICU2_TYPE1_BASE;
708 break; 683 break;
709 case CPU_VR4122: 684 case CPU_VR4122:
710 case CPU_VR4131: 685 case CPU_VR4131:
711 case CPU_VR4133: 686 case CPU_VR4133:
712 icu1_base = SYSINT1REG_TYPE2; 687 icu1_start = ICU1_TYPE2_BASE;
713 icu2_base = SYSINT2REG_TYPE2; 688 icu2_start = ICU2_TYPE2_BASE;
714 break; 689 break;
715 default: 690 default:
716 printk(KERN_ERR "ICU: Unexpected CPU of NEC VR4100 series\n"); 691 printk(KERN_ERR "ICU: Unexpected CPU of NEC VR4100 series\n");
717 return -EINVAL; 692 return -ENODEV;
718 } 693 }
719 694
720 write_icu1(0, MSYSINT1REG); 695 if (request_mem_region(icu1_start, ICU1_SIZE, "ICU") == NULL)
721 write_icu1(0xffff, MGIUINTLREG); 696 return -EBUSY;
722 697
723 write_icu2(0, MSYSINT2REG); 698 if (request_mem_region(icu2_start, ICU2_SIZE, "ICU") == NULL) {
724 write_icu2(0xffff, MGIUINTHREG); 699 release_mem_region(icu1_start, ICU1_SIZE);
700 return -EBUSY;
701 }
725 702
726 return 0; 703 icu1_base = ioremap(icu1_start, ICU1_SIZE);
727} 704 if (icu1_base == NULL) {
705 release_mem_region(icu1_start, ICU1_SIZE);
706 release_mem_region(icu2_start, ICU2_SIZE);
707 return -ENOMEM;
708 }
728 709
729early_initcall(vr41xx_icu_init); 710 icu2_base = ioremap(icu2_start, ICU2_SIZE);
711 if (icu2_base == NULL) {
712 iounmap(icu1_base);
713 release_mem_region(icu1_start, ICU1_SIZE);
714 release_mem_region(icu2_start, ICU2_SIZE);
715 return -ENOMEM;
716 }
730 717
731/*=======================================================================*/ 718 icu1_write(MSYSINT1REG, 0);
719 icu1_write(MGIUINTLREG, 0xffff);
732 720
733static inline void init_vr41xx_icu_irq(void) 721 icu2_write(MSYSINT2REG, 0);
734{ 722 icu2_write(MGIUINTHREG, 0xffff);
735 int i;
736 723
737 for (i = SYSINT1_IRQ_BASE; i <= SYSINT1_IRQ_LAST; i++) 724 for (i = SYSINT1_IRQ_BASE; i <= SYSINT1_IRQ_LAST; i++)
738 irq_desc[i].handler = &sysint1_irq_type; 725 irq_desc[i].handler = &sysint1_irq_type;
@@ -740,18 +727,13 @@ static inline void init_vr41xx_icu_irq(void)
740 for (i = SYSINT2_IRQ_BASE; i <= SYSINT2_IRQ_LAST; i++) 727 for (i = SYSINT2_IRQ_BASE; i <= SYSINT2_IRQ_LAST; i++)
741 irq_desc[i].handler = &sysint2_irq_type; 728 irq_desc[i].handler = &sysint2_irq_type;
742 729
743 setup_irq(INT0_CASCADE_IRQ, &icu_cascade); 730 cascade_irq(INT0_IRQ, icu_get_irq);
744 setup_irq(INT1_CASCADE_IRQ, &icu_cascade); 731 cascade_irq(INT1_IRQ, icu_get_irq);
745 setup_irq(INT2_CASCADE_IRQ, &icu_cascade); 732 cascade_irq(INT2_IRQ, icu_get_irq);
746 setup_irq(INT3_CASCADE_IRQ, &icu_cascade); 733 cascade_irq(INT3_IRQ, icu_get_irq);
747 setup_irq(INT4_CASCADE_IRQ, &icu_cascade); 734 cascade_irq(INT4_IRQ, icu_get_irq);
748}
749 735
750void __init arch_init_irq(void) 736 return 0;
751{
752 mips_cpu_irq_init(MIPS_CPU_IRQ_BASE);
753 init_vr41xx_icu_irq();
754 init_vr41xx_giuint_irq();
755
756 set_except_vector(0, vr41xx_handle_interrupt);
757} 737}
738
739core_initcall(vr41xx_icu_init);
diff --git a/arch/mips/vr41xx/common/int-handler.S b/arch/mips/vr41xx/common/int-handler.S
index 38ff89b505f2..272c13aee4fd 100644
--- a/arch/mips/vr41xx/common/int-handler.S
+++ b/arch/mips/vr41xx/common/int-handler.S
@@ -71,24 +71,24 @@
71 71
72 andi t1, t0, CAUSEF_IP3 # check for Int1 72 andi t1, t0, CAUSEF_IP3 # check for Int1
73 bnez t1, handle_int 73 bnez t1, handle_int
74 li a0, 1 74 li a0, 3
75 75
76 andi t1, t0, CAUSEF_IP4 # check for Int2 76 andi t1, t0, CAUSEF_IP4 # check for Int2
77 bnez t1, handle_int 77 bnez t1, handle_int
78 li a0, 2 78 li a0, 4
79 79
80 andi t1, t0, CAUSEF_IP5 # check for Int3 80 andi t1, t0, CAUSEF_IP5 # check for Int3
81 bnez t1, handle_int 81 bnez t1, handle_int
82 li a0, 3 82 li a0, 5
83 83
84 andi t1, t0, CAUSEF_IP6 # check for Int4 84 andi t1, t0, CAUSEF_IP6 # check for Int4
85 bnez t1, handle_int 85 bnez t1, handle_int
86 li a0, 4 86 li a0, 6
87 87
881: 881:
89 andi t1, t0, CAUSEF_IP2 # check for Int0 89 andi t1, t0, CAUSEF_IP2 # check for Int0
90 bnez t1, handle_int 90 bnez t1, handle_int
91 li a0, 0 91 li a0, 2
92 92
93 andi t1, t0, CAUSEF_IP0 # check for IP0 93 andi t1, t0, CAUSEF_IP0 # check for IP0
94 bnez t1, handle_irq 94 bnez t1, handle_irq
diff --git a/arch/mips/vr41xx/common/irq.c b/arch/mips/vr41xx/common/irq.c
new file mode 100644
index 000000000000..43b214d39438
--- /dev/null
+++ b/arch/mips/vr41xx/common/irq.c
@@ -0,0 +1,94 @@
1/*
2 * Interrupt handing routines for NEC VR4100 series.
3 *
4 * Copyright (C) 2005 Yoichi Yuasa <yuasa@hh.iij4u.or.jp>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19 */
20#include <linux/interrupt.h>
21#include <linux/module.h>
22
23#include <asm/irq_cpu.h>
24#include <asm/system.h>
25#include <asm/vr41xx/vr41xx.h>
26
27typedef struct irq_cascade {
28 int (*get_irq)(unsigned int, struct pt_regs *);
29} irq_cascade_t;
30
31static irq_cascade_t irq_cascade[NR_IRQS] __cacheline_aligned;
32
33static struct irqaction cascade_irqaction = {
34 .handler = no_action,
35 .mask = CPU_MASK_NONE,
36 .name = "cascade",
37};
38
39int cascade_irq(unsigned int irq, int (*get_irq)(unsigned int, struct pt_regs *))
40{
41 int retval = 0;
42
43 if (irq >= NR_IRQS)
44 return -EINVAL;
45
46 if (irq_cascade[irq].get_irq != NULL)
47 free_irq(irq, NULL);
48
49 irq_cascade[irq].get_irq = get_irq;
50
51 if (get_irq != NULL) {
52 retval = setup_irq(irq, &cascade_irqaction);
53 if (retval < 0)
54 irq_cascade[irq].get_irq = NULL;
55 }
56
57 return retval;
58}
59
60EXPORT_SYMBOL_GPL(cascade_irq);
61
62asmlinkage void irq_dispatch(unsigned int irq, struct pt_regs *regs)
63{
64 irq_cascade_t *cascade;
65 irq_desc_t *desc;
66
67 if (irq >= NR_IRQS) {
68 atomic_inc(&irq_err_count);
69 return;
70 }
71
72 cascade = irq_cascade + irq;
73 if (cascade->get_irq != NULL) {
74 unsigned int source_irq = irq;
75 desc = irq_desc + source_irq;
76 desc->handler->ack(source_irq);
77 irq = cascade->get_irq(irq, regs);
78 if (irq < 0)
79 atomic_inc(&irq_err_count);
80 else
81 irq_dispatch(irq, regs);
82 desc->handler->end(source_irq);
83 } else
84 do_IRQ(irq, regs);
85}
86
87extern asmlinkage void vr41xx_handle_interrupt(void);
88
89void __init arch_init_irq(void)
90{
91 mips_cpu_irq_init(MIPS_CPU_IRQ_BASE);
92
93 set_except_vector(0, vr41xx_handle_interrupt);
94}
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-24 11:00:08 -0500