2 #ifndef _ASM_POWERPC_IRQ_H
3 #define _ASM_POWERPC_IRQ_H
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version
9 * 2 of the License, or (at your option) any later version.
12 #include <linux/config.h>
13 #include <linux/threads.h>
15 #include <asm/types.h>
16 #include <asm/atomic.h>
18 /* this number is used when no interrupt has been assigned */
22 * These constants are used for passing information about interrupt
23 * signal polarity and level/edge sensing to the low-level PIC chip
26 #define IRQ_SENSE_MASK 0x1
27 #define IRQ_SENSE_LEVEL 0x1 /* interrupt on active level */
28 #define IRQ_SENSE_EDGE 0x0 /* interrupt triggered by edge */
30 #define IRQ_POLARITY_MASK 0x2
31 #define IRQ_POLARITY_POSITIVE 0x2 /* high level or low->high edge */
32 #define IRQ_POLARITY_NEGATIVE 0x0 /* low level or high->low edge */
35 * IRQ line status macro IRQ_PER_CPU is used
37 #define ARCH_HAS_IRQ_PER_CPU
39 #define get_irq_desc(irq) (&irq_desc[(irq)])
41 /* Define a way to iterate across irqs. */
42 #define for_each_irq(i) \
43 for ((i) = 0; (i) < NR_IRQS; ++(i))
48 * Maximum number of interrupt sources that we can handle.
52 /* Interrupt numbers are virtual in case they are sparsely
53 * distributed by the hardware.
55 extern unsigned int virt_irq_to_real_map[NR_IRQS];
57 /* Create a mapping for a real_irq if it doesn't already exist.
58 * Return the virtual irq as a convenience.
60 int virt_irq_create_mapping(unsigned int real_irq);
61 void virt_irq_init(void);
63 static inline unsigned int virt_irq_to_real(unsigned int virt_irq)
65 return virt_irq_to_real_map[virt_irq];
68 extern unsigned int real_irq_to_virt_slowpath(unsigned int real_irq);
71 * List of interrupt controllers.
79 extern u64 ppc64_interrupt_controller;
83 #if defined(CONFIG_40x)
84 #include <asm/ibm4xx.h>
87 #define NR_BOARD_IRQS 0
90 #ifndef UIC_WIDTH /* Number of interrupts per device */
94 #ifndef NR_UICS /* number of UIC devices */
98 #if defined (CONFIG_403)
100 * The PowerPC 403 cores' Asynchronous Interrupt Controller (AIC) has
101 * 32 possible interrupts, a majority of which are not implemented on
102 * all cores. There are six configurable, external interrupt pins and
103 * there are eight internal interrupts for the on-chip serial port
104 * (SPU), DMA controller, and JTAG controller.
108 #define NR_AIC_IRQS 32
109 #define NR_IRQS (NR_AIC_IRQS + NR_BOARD_IRQS)
111 #elif !defined (CONFIG_403)
114 * The PowerPC 405 cores' Universal Interrupt Controller (UIC) has 32
115 * possible interrupts as well. There are seven, configurable external
116 * interrupt pins and there are 17 internal interrupts for the on-chip
117 * serial port, DMA controller, on-chip Ethernet controller, PCI, etc.
122 #define NR_UIC_IRQS UIC_WIDTH
123 #define NR_IRQS ((NR_UIC_IRQS * NR_UICS) + NR_BOARD_IRQS)
126 #elif defined(CONFIG_44x)
127 #include <asm/ibm44x.h>
129 #define NR_UIC_IRQS 32
130 #define NR_IRQS ((NR_UIC_IRQS * NR_UICS) + NR_BOARD_IRQS)
132 #elif defined(CONFIG_8xx)
134 /* Now include the board configuration specific associations.
136 #include <asm/mpc8xx.h>
138 /* The MPC8xx cores have 16 possible interrupts. There are eight
139 * possible level sensitive interrupts assigned and generated internally
140 * from such devices as CPM, PCMCIA, RTC, PIT, TimeBase and Decrementer.
141 * There are eight external interrupts (IRQs) that can be configured
142 * as either level or edge sensitive.
144 * On some implementations, there is also the possibility of an 8259
145 * through the PCI and PCI-ISA bridges.
147 * We are "flattening" the interrupt vectors of the cascaded CPM
148 * and 8259 interrupt controllers so that we can uniquely identify
149 * any interrupt source with a single integer.
151 #define NR_SIU_INTS 16
152 #define NR_CPM_INTS 32
154 #define NR_8259_INTS 0
157 #define SIU_IRQ_OFFSET 0
158 #define CPM_IRQ_OFFSET (SIU_IRQ_OFFSET + NR_SIU_INTS)
159 #define I8259_IRQ_OFFSET (CPM_IRQ_OFFSET + NR_CPM_INTS)
161 #define NR_IRQS (NR_SIU_INTS + NR_CPM_INTS + NR_8259_INTS)
163 /* These values must be zero-based and map 1:1 with the SIU configuration.
164 * They are used throughout the 8xx I/O subsystem to generate
165 * interrupt masks, flags, and other control patterns. This is why the
166 * current kernel assumption of the 8259 as the base controller is such
167 * a pain in the butt.
169 #define SIU_IRQ0 (0) /* Highest priority */
170 #define SIU_LEVEL0 (1)
172 #define SIU_LEVEL1 (3)
174 #define SIU_LEVEL2 (5)
176 #define SIU_LEVEL3 (7)
178 #define SIU_LEVEL4 (9)
179 #define SIU_IRQ5 (10)
180 #define SIU_LEVEL5 (11)
181 #define SIU_IRQ6 (12)
182 #define SIU_LEVEL6 (13)
183 #define SIU_IRQ7 (14)
184 #define SIU_LEVEL7 (15)
186 #define MPC8xx_INT_FEC1 SIU_LEVEL1
187 #define MPC8xx_INT_FEC2 SIU_LEVEL3
189 #define MPC8xx_INT_SCC1 (CPM_IRQ_OFFSET + CPMVEC_SCC1)
190 #define MPC8xx_INT_SCC2 (CPM_IRQ_OFFSET + CPMVEC_SCC2)
191 #define MPC8xx_INT_SCC3 (CPM_IRQ_OFFSET + CPMVEC_SCC3)
192 #define MPC8xx_INT_SCC4 (CPM_IRQ_OFFSET + CPMVEC_SCC4)
193 #define MPC8xx_INT_SMC1 (CPM_IRQ_OFFSET + CPMVEC_SMC1)
194 #define MPC8xx_INT_SMC2 (CPM_IRQ_OFFSET + CPMVEC_SMC2)
196 /* The internal interrupts we can configure as we see fit.
197 * My personal preference is CPM at level 2, which puts it above the
198 * MBX PCI/ISA/IDE interrupts.
200 #ifndef PIT_INTERRUPT
201 #define PIT_INTERRUPT SIU_LEVEL0
203 #ifndef CPM_INTERRUPT
204 #define CPM_INTERRUPT SIU_LEVEL2
206 #ifndef PCMCIA_INTERRUPT
207 #define PCMCIA_INTERRUPT SIU_LEVEL6
209 #ifndef DEC_INTERRUPT
210 #define DEC_INTERRUPT SIU_LEVEL7
213 /* Some internal interrupt registers use an 8-bit mask for the interrupt
214 * level instead of a number.
216 #define mk_int_int_mask(IL) (1 << (7 - (IL/2)))
218 #elif defined(CONFIG_83xx)
219 #include <asm/mpc83xx.h>
221 #define NR_IRQS (NR_IPIC_INTS)
223 #elif defined(CONFIG_85xx)
224 /* Now include the board configuration specific associations.
226 #include <asm/mpc85xx.h>
228 /* The MPC8548 openpic has 48 internal interrupts and 12 external
231 * We are "flattening" the interrupt vectors of the cascaded CPM
232 * so that we can uniquely identify any interrupt source with a
235 #define NR_CPM_INTS 64
236 #define NR_EPIC_INTS 60
238 #define NR_8259_INTS 0
240 #define NUM_8259_INTERRUPTS NR_8259_INTS
242 #ifndef CPM_IRQ_OFFSET
243 #define CPM_IRQ_OFFSET 0
246 #define NR_IRQS (NR_EPIC_INTS + NR_CPM_INTS + NR_8259_INTS)
248 /* Internal IRQs on MPC85xx OpenPIC */
250 #ifndef MPC85xx_OPENPIC_IRQ_OFFSET
252 #define MPC85xx_OPENPIC_IRQ_OFFSET (CPM_IRQ_OFFSET + NR_CPM_INTS)
254 #define MPC85xx_OPENPIC_IRQ_OFFSET 0
258 /* Not all of these exist on all MPC85xx implementations */
259 #define MPC85xx_IRQ_L2CACHE ( 0 + MPC85xx_OPENPIC_IRQ_OFFSET)
260 #define MPC85xx_IRQ_ECM ( 1 + MPC85xx_OPENPIC_IRQ_OFFSET)
261 #define MPC85xx_IRQ_DDR ( 2 + MPC85xx_OPENPIC_IRQ_OFFSET)
262 #define MPC85xx_IRQ_LBIU ( 3 + MPC85xx_OPENPIC_IRQ_OFFSET)
263 #define MPC85xx_IRQ_DMA0 ( 4 + MPC85xx_OPENPIC_IRQ_OFFSET)
264 #define MPC85xx_IRQ_DMA1 ( 5 + MPC85xx_OPENPIC_IRQ_OFFSET)
265 #define MPC85xx_IRQ_DMA2 ( 6 + MPC85xx_OPENPIC_IRQ_OFFSET)
266 #define MPC85xx_IRQ_DMA3 ( 7 + MPC85xx_OPENPIC_IRQ_OFFSET)
267 #define MPC85xx_IRQ_PCI1 ( 8 + MPC85xx_OPENPIC_IRQ_OFFSET)
268 #define MPC85xx_IRQ_PCI2 ( 9 + MPC85xx_OPENPIC_IRQ_OFFSET)
269 #define MPC85xx_IRQ_RIO_ERROR ( 9 + MPC85xx_OPENPIC_IRQ_OFFSET)
270 #define MPC85xx_IRQ_RIO_BELL (10 + MPC85xx_OPENPIC_IRQ_OFFSET)
271 #define MPC85xx_IRQ_RIO_TX (11 + MPC85xx_OPENPIC_IRQ_OFFSET)
272 #define MPC85xx_IRQ_RIO_RX (12 + MPC85xx_OPENPIC_IRQ_OFFSET)
273 #define MPC85xx_IRQ_TSEC1_TX (13 + MPC85xx_OPENPIC_IRQ_OFFSET)
274 #define MPC85xx_IRQ_TSEC1_RX (14 + MPC85xx_OPENPIC_IRQ_OFFSET)
275 #define MPC85xx_IRQ_TSEC3_TX (15 + MPC85xx_OPENPIC_IRQ_OFFSET)
276 #define MPC85xx_IRQ_TSEC3_RX (16 + MPC85xx_OPENPIC_IRQ_OFFSET)
277 #define MPC85xx_IRQ_TSEC3_ERROR (17 + MPC85xx_OPENPIC_IRQ_OFFSET)
278 #define MPC85xx_IRQ_TSEC1_ERROR (18 + MPC85xx_OPENPIC_IRQ_OFFSET)
279 #define MPC85xx_IRQ_TSEC2_TX (19 + MPC85xx_OPENPIC_IRQ_OFFSET)
280 #define MPC85xx_IRQ_TSEC2_RX (20 + MPC85xx_OPENPIC_IRQ_OFFSET)
281 #define MPC85xx_IRQ_TSEC4_TX (21 + MPC85xx_OPENPIC_IRQ_OFFSET)
282 #define MPC85xx_IRQ_TSEC4_RX (22 + MPC85xx_OPENPIC_IRQ_OFFSET)
283 #define MPC85xx_IRQ_TSEC4_ERROR (23 + MPC85xx_OPENPIC_IRQ_OFFSET)
284 #define MPC85xx_IRQ_TSEC2_ERROR (24 + MPC85xx_OPENPIC_IRQ_OFFSET)
285 #define MPC85xx_IRQ_FEC (25 + MPC85xx_OPENPIC_IRQ_OFFSET)
286 #define MPC85xx_IRQ_DUART (26 + MPC85xx_OPENPIC_IRQ_OFFSET)
287 #define MPC85xx_IRQ_IIC1 (27 + MPC85xx_OPENPIC_IRQ_OFFSET)
288 #define MPC85xx_IRQ_PERFMON (28 + MPC85xx_OPENPIC_IRQ_OFFSET)
289 #define MPC85xx_IRQ_SEC2 (29 + MPC85xx_OPENPIC_IRQ_OFFSET)
290 #define MPC85xx_IRQ_CPM (30 + MPC85xx_OPENPIC_IRQ_OFFSET)
292 /* The 12 external interrupt lines */
293 #define MPC85xx_IRQ_EXT0 (48 + MPC85xx_OPENPIC_IRQ_OFFSET)
294 #define MPC85xx_IRQ_EXT1 (49 + MPC85xx_OPENPIC_IRQ_OFFSET)
295 #define MPC85xx_IRQ_EXT2 (50 + MPC85xx_OPENPIC_IRQ_OFFSET)
296 #define MPC85xx_IRQ_EXT3 (51 + MPC85xx_OPENPIC_IRQ_OFFSET)
297 #define MPC85xx_IRQ_EXT4 (52 + MPC85xx_OPENPIC_IRQ_OFFSET)
298 #define MPC85xx_IRQ_EXT5 (53 + MPC85xx_OPENPIC_IRQ_OFFSET)
299 #define MPC85xx_IRQ_EXT6 (54 + MPC85xx_OPENPIC_IRQ_OFFSET)
300 #define MPC85xx_IRQ_EXT7 (55 + MPC85xx_OPENPIC_IRQ_OFFSET)
301 #define MPC85xx_IRQ_EXT8 (56 + MPC85xx_OPENPIC_IRQ_OFFSET)
302 #define MPC85xx_IRQ_EXT9 (57 + MPC85xx_OPENPIC_IRQ_OFFSET)
303 #define MPC85xx_IRQ_EXT10 (58 + MPC85xx_OPENPIC_IRQ_OFFSET)
304 #define MPC85xx_IRQ_EXT11 (59 + MPC85xx_OPENPIC_IRQ_OFFSET)
306 /* CPM related interrupts */
307 #define SIU_INT_ERROR ((uint)0x00+CPM_IRQ_OFFSET)
308 #define SIU_INT_I2C ((uint)0x01+CPM_IRQ_OFFSET)
309 #define SIU_INT_SPI ((uint)0x02+CPM_IRQ_OFFSET)
310 #define SIU_INT_RISC ((uint)0x03+CPM_IRQ_OFFSET)
311 #define SIU_INT_SMC1 ((uint)0x04+CPM_IRQ_OFFSET)
312 #define SIU_INT_SMC2 ((uint)0x05+CPM_IRQ_OFFSET)
313 #define SIU_INT_USB ((uint)0x0b+CPM_IRQ_OFFSET)
314 #define SIU_INT_TIMER1 ((uint)0x0c+CPM_IRQ_OFFSET)
315 #define SIU_INT_TIMER2 ((uint)0x0d+CPM_IRQ_OFFSET)
316 #define SIU_INT_TIMER3 ((uint)0x0e+CPM_IRQ_OFFSET)
317 #define SIU_INT_TIMER4 ((uint)0x0f+CPM_IRQ_OFFSET)
318 #define SIU_INT_FCC1 ((uint)0x20+CPM_IRQ_OFFSET)
319 #define SIU_INT_FCC2 ((uint)0x21+CPM_IRQ_OFFSET)
320 #define SIU_INT_FCC3 ((uint)0x22+CPM_IRQ_OFFSET)
321 #define SIU_INT_MCC1 ((uint)0x24+CPM_IRQ_OFFSET)
322 #define SIU_INT_MCC2 ((uint)0x25+CPM_IRQ_OFFSET)
323 #define SIU_INT_SCC1 ((uint)0x28+CPM_IRQ_OFFSET)
324 #define SIU_INT_SCC2 ((uint)0x29+CPM_IRQ_OFFSET)
325 #define SIU_INT_SCC3 ((uint)0x2a+CPM_IRQ_OFFSET)
326 #define SIU_INT_SCC4 ((uint)0x2b+CPM_IRQ_OFFSET)
327 #define SIU_INT_PC15 ((uint)0x30+CPM_IRQ_OFFSET)
328 #define SIU_INT_PC14 ((uint)0x31+CPM_IRQ_OFFSET)
329 #define SIU_INT_PC13 ((uint)0x32+CPM_IRQ_OFFSET)
330 #define SIU_INT_PC12 ((uint)0x33+CPM_IRQ_OFFSET)
331 #define SIU_INT_PC11 ((uint)0x34+CPM_IRQ_OFFSET)
332 #define SIU_INT_PC10 ((uint)0x35+CPM_IRQ_OFFSET)
333 #define SIU_INT_PC9 ((uint)0x36+CPM_IRQ_OFFSET)
334 #define SIU_INT_PC8 ((uint)0x37+CPM_IRQ_OFFSET)
335 #define SIU_INT_PC7 ((uint)0x38+CPM_IRQ_OFFSET)
336 #define SIU_INT_PC6 ((uint)0x39+CPM_IRQ_OFFSET)
337 #define SIU_INT_PC5 ((uint)0x3a+CPM_IRQ_OFFSET)
338 #define SIU_INT_PC4 ((uint)0x3b+CPM_IRQ_OFFSET)
339 #define SIU_INT_PC3 ((uint)0x3c+CPM_IRQ_OFFSET)
340 #define SIU_INT_PC2 ((uint)0x3d+CPM_IRQ_OFFSET)
341 #define SIU_INT_PC1 ((uint)0x3e+CPM_IRQ_OFFSET)
342 #define SIU_INT_PC0 ((uint)0x3f+CPM_IRQ_OFFSET)
344 #else /* CONFIG_40x + CONFIG_8xx */
346 * this is the # irq's for all ppc arch's (pmac/chrp/prep)
347 * so it is the max of them all
350 #define __DO_IRQ_CANON 1
354 #define NUM_8259_INTERRUPTS 16
356 #else /* CONFIG_8260 */
358 /* The 8260 has an internal interrupt controller with a maximum of
359 * 64 IRQs. We will use NR_IRQs from above since it is large enough.
360 * Don't be confused by the 8260 documentation where they list an
361 * "interrupt number" and "interrupt vector". We are only interested
362 * in the interrupt vector. There are "reserved" holes where the
363 * vector number increases, but the interrupt number in the table does not.
364 * (Document errata updates have fixed this...make sure you have up to
365 * date processor documentation -- Dan).
368 #ifndef CPM_IRQ_OFFSET
369 #define CPM_IRQ_OFFSET 0
372 #define NR_CPM_INTS 64
374 #define SIU_INT_ERROR ((uint)0x00 + CPM_IRQ_OFFSET)
375 #define SIU_INT_I2C ((uint)0x01 + CPM_IRQ_OFFSET)
376 #define SIU_INT_SPI ((uint)0x02 + CPM_IRQ_OFFSET)
377 #define SIU_INT_RISC ((uint)0x03 + CPM_IRQ_OFFSET)
378 #define SIU_INT_SMC1 ((uint)0x04 + CPM_IRQ_OFFSET)
379 #define SIU_INT_SMC2 ((uint)0x05 + CPM_IRQ_OFFSET)
380 #define SIU_INT_IDMA1 ((uint)0x06 + CPM_IRQ_OFFSET)
381 #define SIU_INT_IDMA2 ((uint)0x07 + CPM_IRQ_OFFSET)
382 #define SIU_INT_IDMA3 ((uint)0x08 + CPM_IRQ_OFFSET)
383 #define SIU_INT_IDMA4 ((uint)0x09 + CPM_IRQ_OFFSET)
384 #define SIU_INT_SDMA ((uint)0x0a + CPM_IRQ_OFFSET)
385 #define SIU_INT_USB ((uint)0x0b + CPM_IRQ_OFFSET)
386 #define SIU_INT_TIMER1 ((uint)0x0c + CPM_IRQ_OFFSET)
387 #define SIU_INT_TIMER2 ((uint)0x0d + CPM_IRQ_OFFSET)
388 #define SIU_INT_TIMER3 ((uint)0x0e + CPM_IRQ_OFFSET)
389 #define SIU_INT_TIMER4 ((uint)0x0f + CPM_IRQ_OFFSET)
390 #define SIU_INT_TMCNT ((uint)0x10 + CPM_IRQ_OFFSET)
391 #define SIU_INT_PIT ((uint)0x11 + CPM_IRQ_OFFSET)
392 #define SIU_INT_IRQ1 ((uint)0x13 + CPM_IRQ_OFFSET)
393 #define SIU_INT_IRQ2 ((uint)0x14 + CPM_IRQ_OFFSET)
394 #define SIU_INT_IRQ3 ((uint)0x15 + CPM_IRQ_OFFSET)
395 #define SIU_INT_IRQ4 ((uint)0x16 + CPM_IRQ_OFFSET)
396 #define SIU_INT_IRQ5 ((uint)0x17 + CPM_IRQ_OFFSET)
397 #define SIU_INT_IRQ6 ((uint)0x18 + CPM_IRQ_OFFSET)
398 #define SIU_INT_IRQ7 ((uint)0x19 + CPM_IRQ_OFFSET)
399 #define SIU_INT_FCC1 ((uint)0x20 + CPM_IRQ_OFFSET)
400 #define SIU_INT_FCC2 ((uint)0x21 + CPM_IRQ_OFFSET)
401 #define SIU_INT_FCC3 ((uint)0x22 + CPM_IRQ_OFFSET)
402 #define SIU_INT_MCC1 ((uint)0x24 + CPM_IRQ_OFFSET)
403 #define SIU_INT_MCC2 ((uint)0x25 + CPM_IRQ_OFFSET)
404 #define SIU_INT_SCC1 ((uint)0x28 + CPM_IRQ_OFFSET)
405 #define SIU_INT_SCC2 ((uint)0x29 + CPM_IRQ_OFFSET)
406 #define SIU_INT_SCC3 ((uint)0x2a + CPM_IRQ_OFFSET)
407 #define SIU_INT_SCC4 ((uint)0x2b + CPM_IRQ_OFFSET)
408 #define SIU_INT_PC15 ((uint)0x30 + CPM_IRQ_OFFSET)
409 #define SIU_INT_PC14 ((uint)0x31 + CPM_IRQ_OFFSET)
410 #define SIU_INT_PC13 ((uint)0x32 + CPM_IRQ_OFFSET)
411 #define SIU_INT_PC12 ((uint)0x33 + CPM_IRQ_OFFSET)
412 #define SIU_INT_PC11 ((uint)0x34 + CPM_IRQ_OFFSET)
413 #define SIU_INT_PC10 ((uint)0x35 + CPM_IRQ_OFFSET)
414 #define SIU_INT_PC9 ((uint)0x36 + CPM_IRQ_OFFSET)
415 #define SIU_INT_PC8 ((uint)0x37 + CPM_IRQ_OFFSET)
416 #define SIU_INT_PC7 ((uint)0x38 + CPM_IRQ_OFFSET)
417 #define SIU_INT_PC6 ((uint)0x39 + CPM_IRQ_OFFSET)
418 #define SIU_INT_PC5 ((uint)0x3a + CPM_IRQ_OFFSET)
419 #define SIU_INT_PC4 ((uint)0x3b + CPM_IRQ_OFFSET)
420 #define SIU_INT_PC3 ((uint)0x3c + CPM_IRQ_OFFSET)
421 #define SIU_INT_PC2 ((uint)0x3d + CPM_IRQ_OFFSET)
422 #define SIU_INT_PC1 ((uint)0x3e + CPM_IRQ_OFFSET)
423 #define SIU_INT_PC0 ((uint)0x3f + CPM_IRQ_OFFSET)
425 #endif /* CONFIG_8260 */
429 #define NR_MASK_WORDS ((NR_IRQS + 31) / 32)
430 /* pedantic: these are long because they are used with set_bit --RR */
431 extern unsigned long ppc_cached_irq_mask[NR_MASK_WORDS];
432 extern unsigned long ppc_lost_interrupts[NR_MASK_WORDS];
433 extern atomic_t ppc_n_lost_interrupts;
438 * Because many systems have two overlapping names spaces for
439 * interrupts (ISA and XICS for example), and the ISA interrupts
440 * have historically not been easy to renumber, we allow ISA
441 * interrupts to take values 0 - 15, and shift up the remaining
442 * interrupts by 0x10.
444 #define NUM_ISA_INTERRUPTS 0x10
445 extern int __irq_offset_value;
447 static inline int irq_offset_up(int irq)
449 return(irq + __irq_offset_value);
452 static inline int irq_offset_down(int irq)
454 return(irq - __irq_offset_value);
457 static inline int irq_offset_value(void)
459 return __irq_offset_value;
462 #ifdef __DO_IRQ_CANON
463 extern int ppc_do_canonicalize_irqs;
465 #define ppc_do_canonicalize_irqs 0
468 static __inline__ int irq_canonicalize(int irq)
470 if (ppc_do_canonicalize_irqs && irq == 2)
475 extern int distribute_irqs;
480 #ifdef CONFIG_IRQSTACKS
482 * Per-cpu stacks for handling hard and soft interrupts.
484 extern struct thread_info *hardirq_ctx[NR_CPUS];
485 extern struct thread_info *softirq_ctx[NR_CPUS];
487 extern void irq_ctx_init(void);
488 extern void call_do_softirq(struct thread_info *tp);
489 extern int call_handle_IRQ_event(int irq, struct pt_regs *regs,
490 struct irqaction *action, struct thread_info *tp);
492 #define __ARCH_HAS_DO_SOFTIRQ
495 #define irq_ctx_init()
497 #endif /* CONFIG_IRQSTACKS */
499 extern void do_IRQ(struct pt_regs *regs);
501 #endif /* _ASM_IRQ_H */
502 #endif /* __KERNEL__ */