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>
14 #include <linux/list.h>
15 #include <linux/radix-tree.h>
17 #include <asm/types.h>
18 #include <asm/atomic.h>
21 #define get_irq_desc(irq) (&irq_desc[(irq)])
23 /* Define a way to iterate across irqs. */
24 #define for_each_irq(i) \
25 for ((i) = 0; (i) < NR_IRQS; ++(i))
27 extern atomic_t ppc_n_lost_interrupts;
29 #ifdef CONFIG_PPC_MERGE
31 /* This number is used when no interrupt has been assigned */
34 /* This is a special irq number to return from get_irq() to tell that
35 * no interrupt happened _and_ ignore it (don't count it as bad). Some
36 * platforms like iSeries rely on that.
38 #define NO_IRQ_IGNORE ((unsigned int)-1)
40 /* Total number of virq in the platform (make it a CONFIG_* option ? */
43 /* Number of irqs reserved for the legacy controller */
44 #define NUM_ISA_INTERRUPTS 16
46 /* This type is the placeholder for a hardware interrupt number. It has to
47 * be big enough to enclose whatever representation is used by a given
50 typedef unsigned long irq_hw_number_t;
52 /* Interrupt controller "host" data structure. This could be defined as a
53 * irq domain controller. That is, it handles the mapping between hardware
54 * and virtual interrupt numbers for a given interrupt domain. The host
55 * structure is generally created by the PIC code for a given PIC instance
56 * (though a host can cover more than one PIC if they have a flat number
57 * model). It's the host callbacks that are responsible for setting the
58 * irq_chip on a given irq_desc after it's been mapped.
60 * The host code and data structures are fairly agnostic to the fact that
61 * we use an open firmware device-tree. We do have references to struct
62 * device_node in two places: in irq_find_host() to find the host matching
63 * a given interrupt controller node, and of course as an argument to its
64 * counterpart host->ops->match() callback. However, those are treated as
65 * generic pointers by the core and the fact that it's actually a device-node
66 * pointer is purely a convention between callers and implementation. This
67 * code could thus be used on other architectures by replacing those two
68 * by some sort of arch-specific void * "token" used to identify interrupt
72 struct radix_tree_root;
74 /* Functions below are provided by the host and called whenever a new mapping
75 * is created or an old mapping is disposed. The host can then proceed to
76 * whatever internal data structures management is required. It also needs
77 * to setup the irq_desc when returning from map().
80 /* Match an interrupt controller device node to a host, returns
83 int (*match)(struct irq_host *h, struct device_node *node);
85 /* Create or update a mapping between a virtual irq number and a hw
86 * irq number. This is called only once for a given mapping.
88 int (*map)(struct irq_host *h, unsigned int virq, irq_hw_number_t hw);
90 /* Dispose of such a mapping */
91 void (*unmap)(struct irq_host *h, unsigned int virq);
93 /* Translate device-tree interrupt specifier from raw format coming
94 * from the firmware to a irq_hw_number_t (interrupt line number) and
95 * type (sense) that can be passed to set_irq_type(). In the absence
96 * of this callback, irq_create_of_mapping() and irq_of_parse_and_map()
97 * will return the hw number in the first cell and IRQ_TYPE_NONE for
98 * the type (which amount to keeping whatever default value the
99 * interrupt controller has for that line)
101 int (*xlate)(struct irq_host *h, struct device_node *ctrler,
102 u32 *intspec, unsigned int intsize,
103 irq_hw_number_t *out_hwirq, unsigned int *out_type);
107 struct list_head link;
109 /* type of reverse mapping technique */
110 unsigned int revmap_type;
111 #define IRQ_HOST_MAP_LEGACY 0 /* legacy 8259, gets irqs 1..15 */
112 #define IRQ_HOST_MAP_NOMAP 1 /* no fast reverse mapping */
113 #define IRQ_HOST_MAP_LINEAR 2 /* linear map of interrupts */
114 #define IRQ_HOST_MAP_TREE 3 /* radix tree */
118 unsigned int *revmap;
120 struct radix_tree_root tree;
122 struct irq_host_ops *ops;
124 irq_hw_number_t inval_irq;
127 /* The main irq map itself is an array of NR_IRQ entries containing the
128 * associate host and irq number. An entry with a host of NULL is free.
129 * An entry can be allocated if it's free, the allocator always then sets
130 * hwirq first to the host's invalid irq number and then fills ops.
132 struct irq_map_entry {
133 irq_hw_number_t hwirq;
134 struct irq_host *host;
137 extern struct irq_map_entry irq_map[NR_IRQS];
141 * irq_alloc_host - Allocate a new irq_host data structure
142 * @node: device-tree node of the interrupt controller
143 * @revmap_type: type of reverse mapping to use
144 * @revmap_arg: for IRQ_HOST_MAP_LINEAR linear only: size of the map
145 * @ops: map/unmap host callbacks
146 * @inval_irq: provide a hw number in that host space that is always invalid
148 * Allocates and initialize and irq_host structure. Note that in the case of
149 * IRQ_HOST_MAP_LEGACY, the map() callback will be called before this returns
150 * for all legacy interrupts except 0 (which is always the invalid irq for
151 * a legacy controller). For a IRQ_HOST_MAP_LINEAR, the map is allocated by
152 * this call as well. For a IRQ_HOST_MAP_TREE, the radix tree will be allocated
153 * later during boot automatically (the reverse mapping will use the slow path
154 * until that happens).
156 extern struct irq_host *irq_alloc_host(unsigned int revmap_type,
157 unsigned int revmap_arg,
158 struct irq_host_ops *ops,
159 irq_hw_number_t inval_irq);
163 * irq_find_host - Locates a host for a given device node
164 * @node: device-tree node of the interrupt controller
166 extern struct irq_host *irq_find_host(struct device_node *node);
170 * irq_set_default_host - Set a "default" host
171 * @host: default host pointer
173 * For convenience, it's possible to set a "default" host that will be used
174 * whenever NULL is passed to irq_create_mapping(). It makes life easier for
175 * platforms that want to manipulate a few hard coded interrupt numbers that
176 * aren't properly represented in the device-tree.
178 extern void irq_set_default_host(struct irq_host *host);
182 * irq_set_virq_count - Set the maximum number of virt irqs
183 * @count: number of linux virtual irqs, capped with NR_IRQS
185 * This is mainly for use by platforms like iSeries who want to program
186 * the virtual irq number in the controller to avoid the reverse mapping
188 extern void irq_set_virq_count(unsigned int count);
192 * irq_create_mapping - Map a hardware interrupt into linux virq space
193 * @host: host owning this hardware interrupt or NULL for default host
194 * @hwirq: hardware irq number in that host space
196 * Only one mapping per hardware interrupt is permitted. Returns a linux
198 * If the sense/trigger is to be specified, set_irq_type() should be called
199 * on the number returned from that call.
201 extern unsigned int irq_create_mapping(struct irq_host *host,
202 irq_hw_number_t hwirq);
206 * irq_dispose_mapping - Unmap an interrupt
207 * @virq: linux virq number of the interrupt to unmap
209 extern void irq_dispose_mapping(unsigned int virq);
212 * irq_find_mapping - Find a linux virq from an hw irq number.
213 * @host: host owning this hardware interrupt
214 * @hwirq: hardware irq number in that host space
216 * This is a slow path, for use by generic code. It's expected that an
217 * irq controller implementation directly calls the appropriate low level
220 extern unsigned int irq_find_mapping(struct irq_host *host,
221 irq_hw_number_t hwirq);
225 * irq_radix_revmap - Find a linux virq from a hw irq number.
226 * @host: host owning this hardware interrupt
227 * @hwirq: hardware irq number in that host space
229 * This is a fast path, for use by irq controller code that uses radix tree
232 extern unsigned int irq_radix_revmap(struct irq_host *host,
233 irq_hw_number_t hwirq);
236 * irq_linear_revmap - Find a linux virq from a hw irq number.
237 * @host: host owning this hardware interrupt
238 * @hwirq: hardware irq number in that host space
240 * This is a fast path, for use by irq controller code that uses linear
241 * revmaps. It does fallback to the slow path if the revmap doesn't exist
242 * yet and will create the revmap entry with appropriate locking
245 extern unsigned int irq_linear_revmap(struct irq_host *host,
246 irq_hw_number_t hwirq);
251 * irq_alloc_virt - Allocate virtual irq numbers
252 * @host: host owning these new virtual irqs
253 * @count: number of consecutive numbers to allocate
254 * @hint: pass a hint number, the allocator will try to use a 1:1 mapping
256 * This is a low level function that is used internally by irq_create_mapping()
257 * and that can be used by some irq controllers implementations for things
258 * like allocating ranges of numbers for MSIs. The revmaps are left untouched.
260 extern unsigned int irq_alloc_virt(struct irq_host *host,
265 * irq_free_virt - Free virtual irq numbers
266 * @virq: virtual irq number of the first interrupt to free
267 * @count: number of interrupts to free
269 * This function is the opposite of irq_alloc_virt. It will not clear reverse
270 * maps, this should be done previously by unmap'ing the interrupt. In fact,
271 * all interrupts covered by the range being freed should have been unmapped
272 * prior to calling this.
274 extern void irq_free_virt(unsigned int virq, unsigned int count);
277 /* -- OF helpers -- */
279 /* irq_create_of_mapping - Map a hardware interrupt into linux virq space
280 * @controller: Device node of the interrupt controller
281 * @inspec: Interrupt specifier from the device-tree
282 * @intsize: Size of the interrupt specifier from the device-tree
284 * This function is identical to irq_create_mapping except that it takes
285 * as input informations straight from the device-tree (typically the results
286 * of the of_irq_map_*() functions.
288 extern unsigned int irq_create_of_mapping(struct device_node *controller,
289 u32 *intspec, unsigned int intsize);
292 /* irq_of_parse_and_map - Parse nad Map an interrupt into linux virq space
293 * @device: Device node of the device whose interrupt is to be mapped
294 * @index: Index of the interrupt to map
296 * This function is a wrapper that chains of_irq_map_one() and
297 * irq_create_of_mapping() to make things easier to callers
299 extern unsigned int irq_of_parse_and_map(struct device_node *dev, int index);
301 /* -- End OF helpers -- */
304 * irq_early_init - Init irq remapping subsystem
306 extern void irq_early_init(void);
308 static __inline__ int irq_canonicalize(int irq)
314 #else /* CONFIG_PPC_MERGE */
316 /* This number is used when no interrupt has been assigned */
318 #define NO_IRQ_IGNORE (-2)
322 * These constants are used for passing information about interrupt
323 * signal polarity and level/edge sensing to the low-level PIC chip
326 #define IRQ_SENSE_MASK 0x1
327 #define IRQ_SENSE_LEVEL 0x1 /* interrupt on active level */
328 #define IRQ_SENSE_EDGE 0x0 /* interrupt triggered by edge */
330 #define IRQ_POLARITY_MASK 0x2
331 #define IRQ_POLARITY_POSITIVE 0x2 /* high level or low->high edge */
332 #define IRQ_POLARITY_NEGATIVE 0x0 /* low level or high->low edge */
335 #if defined(CONFIG_40x)
336 #include <asm/ibm4xx.h>
338 #ifndef NR_BOARD_IRQS
339 #define NR_BOARD_IRQS 0
342 #ifndef UIC_WIDTH /* Number of interrupts per device */
346 #ifndef NR_UICS /* number of UIC devices */
350 #if defined (CONFIG_403)
352 * The PowerPC 403 cores' Asynchronous Interrupt Controller (AIC) has
353 * 32 possible interrupts, a majority of which are not implemented on
354 * all cores. There are six configurable, external interrupt pins and
355 * there are eight internal interrupts for the on-chip serial port
356 * (SPU), DMA controller, and JTAG controller.
360 #define NR_AIC_IRQS 32
361 #define NR_IRQS (NR_AIC_IRQS + NR_BOARD_IRQS)
363 #elif !defined (CONFIG_403)
366 * The PowerPC 405 cores' Universal Interrupt Controller (UIC) has 32
367 * possible interrupts as well. There are seven, configurable external
368 * interrupt pins and there are 17 internal interrupts for the on-chip
369 * serial port, DMA controller, on-chip Ethernet controller, PCI, etc.
374 #define NR_UIC_IRQS UIC_WIDTH
375 #define NR_IRQS ((NR_UIC_IRQS * NR_UICS) + NR_BOARD_IRQS)
378 #elif defined(CONFIG_44x)
379 #include <asm/ibm44x.h>
381 #define NR_UIC_IRQS 32
382 #define NR_IRQS ((NR_UIC_IRQS * NR_UICS) + NR_BOARD_IRQS)
384 #elif defined(CONFIG_8xx)
386 /* Now include the board configuration specific associations.
388 #include <asm/mpc8xx.h>
390 /* The MPC8xx cores have 16 possible interrupts. There are eight
391 * possible level sensitive interrupts assigned and generated internally
392 * from such devices as CPM, PCMCIA, RTC, PIT, TimeBase and Decrementer.
393 * There are eight external interrupts (IRQs) that can be configured
394 * as either level or edge sensitive.
396 * On some implementations, there is also the possibility of an 8259
397 * through the PCI and PCI-ISA bridges.
399 * We are "flattening" the interrupt vectors of the cascaded CPM
400 * and 8259 interrupt controllers so that we can uniquely identify
401 * any interrupt source with a single integer.
403 #define NR_SIU_INTS 16
404 #define NR_CPM_INTS 32
406 #define NR_8259_INTS 0
409 #define SIU_IRQ_OFFSET 0
410 #define CPM_IRQ_OFFSET (SIU_IRQ_OFFSET + NR_SIU_INTS)
411 #define I8259_IRQ_OFFSET (CPM_IRQ_OFFSET + NR_CPM_INTS)
413 #define NR_IRQS (NR_SIU_INTS + NR_CPM_INTS + NR_8259_INTS)
415 /* These values must be zero-based and map 1:1 with the SIU configuration.
416 * They are used throughout the 8xx I/O subsystem to generate
417 * interrupt masks, flags, and other control patterns. This is why the
418 * current kernel assumption of the 8259 as the base controller is such
419 * a pain in the butt.
421 #define SIU_IRQ0 (0) /* Highest priority */
422 #define SIU_LEVEL0 (1)
424 #define SIU_LEVEL1 (3)
426 #define SIU_LEVEL2 (5)
428 #define SIU_LEVEL3 (7)
430 #define SIU_LEVEL4 (9)
431 #define SIU_IRQ5 (10)
432 #define SIU_LEVEL5 (11)
433 #define SIU_IRQ6 (12)
434 #define SIU_LEVEL6 (13)
435 #define SIU_IRQ7 (14)
436 #define SIU_LEVEL7 (15)
438 #define MPC8xx_INT_FEC1 SIU_LEVEL1
439 #define MPC8xx_INT_FEC2 SIU_LEVEL3
441 #define MPC8xx_INT_SCC1 (CPM_IRQ_OFFSET + CPMVEC_SCC1)
442 #define MPC8xx_INT_SCC2 (CPM_IRQ_OFFSET + CPMVEC_SCC2)
443 #define MPC8xx_INT_SCC3 (CPM_IRQ_OFFSET + CPMVEC_SCC3)
444 #define MPC8xx_INT_SCC4 (CPM_IRQ_OFFSET + CPMVEC_SCC4)
445 #define MPC8xx_INT_SMC1 (CPM_IRQ_OFFSET + CPMVEC_SMC1)
446 #define MPC8xx_INT_SMC2 (CPM_IRQ_OFFSET + CPMVEC_SMC2)
448 /* The internal interrupts we can configure as we see fit.
449 * My personal preference is CPM at level 2, which puts it above the
450 * MBX PCI/ISA/IDE interrupts.
452 #ifndef PIT_INTERRUPT
453 #define PIT_INTERRUPT SIU_LEVEL0
455 #ifndef CPM_INTERRUPT
456 #define CPM_INTERRUPT SIU_LEVEL2
458 #ifndef PCMCIA_INTERRUPT
459 #define PCMCIA_INTERRUPT SIU_LEVEL6
461 #ifndef DEC_INTERRUPT
462 #define DEC_INTERRUPT SIU_LEVEL7
465 /* Some internal interrupt registers use an 8-bit mask for the interrupt
466 * level instead of a number.
468 #define mk_int_int_mask(IL) (1 << (7 - (IL/2)))
470 #elif defined(CONFIG_83xx)
471 #include <asm/mpc83xx.h>
473 #define NR_IRQS (NR_IPIC_INTS)
475 #elif defined(CONFIG_85xx)
476 /* Now include the board configuration specific associations.
478 #include <asm/mpc85xx.h>
480 /* The MPC8548 openpic has 48 internal interrupts and 12 external
483 * We are "flattening" the interrupt vectors of the cascaded CPM
484 * so that we can uniquely identify any interrupt source with a
487 #define NR_CPM_INTS 64
488 #define NR_EPIC_INTS 60
490 #define NR_8259_INTS 0
492 #define NUM_8259_INTERRUPTS NR_8259_INTS
494 #ifndef CPM_IRQ_OFFSET
495 #define CPM_IRQ_OFFSET 0
498 #define NR_IRQS (NR_EPIC_INTS + NR_CPM_INTS + NR_8259_INTS)
500 /* Internal IRQs on MPC85xx OpenPIC */
502 #ifndef MPC85xx_OPENPIC_IRQ_OFFSET
504 #define MPC85xx_OPENPIC_IRQ_OFFSET (CPM_IRQ_OFFSET + NR_CPM_INTS)
506 #define MPC85xx_OPENPIC_IRQ_OFFSET 0
510 /* Not all of these exist on all MPC85xx implementations */
511 #define MPC85xx_IRQ_L2CACHE ( 0 + MPC85xx_OPENPIC_IRQ_OFFSET)
512 #define MPC85xx_IRQ_ECM ( 1 + MPC85xx_OPENPIC_IRQ_OFFSET)
513 #define MPC85xx_IRQ_DDR ( 2 + MPC85xx_OPENPIC_IRQ_OFFSET)
514 #define MPC85xx_IRQ_LBIU ( 3 + MPC85xx_OPENPIC_IRQ_OFFSET)
515 #define MPC85xx_IRQ_DMA0 ( 4 + MPC85xx_OPENPIC_IRQ_OFFSET)
516 #define MPC85xx_IRQ_DMA1 ( 5 + MPC85xx_OPENPIC_IRQ_OFFSET)
517 #define MPC85xx_IRQ_DMA2 ( 6 + MPC85xx_OPENPIC_IRQ_OFFSET)
518 #define MPC85xx_IRQ_DMA3 ( 7 + MPC85xx_OPENPIC_IRQ_OFFSET)
519 #define MPC85xx_IRQ_PCI1 ( 8 + MPC85xx_OPENPIC_IRQ_OFFSET)
520 #define MPC85xx_IRQ_PCI2 ( 9 + MPC85xx_OPENPIC_IRQ_OFFSET)
521 #define MPC85xx_IRQ_RIO_ERROR ( 9 + MPC85xx_OPENPIC_IRQ_OFFSET)
522 #define MPC85xx_IRQ_RIO_BELL (10 + MPC85xx_OPENPIC_IRQ_OFFSET)
523 #define MPC85xx_IRQ_RIO_TX (11 + MPC85xx_OPENPIC_IRQ_OFFSET)
524 #define MPC85xx_IRQ_RIO_RX (12 + MPC85xx_OPENPIC_IRQ_OFFSET)
525 #define MPC85xx_IRQ_TSEC1_TX (13 + MPC85xx_OPENPIC_IRQ_OFFSET)
526 #define MPC85xx_IRQ_TSEC1_RX (14 + MPC85xx_OPENPIC_IRQ_OFFSET)
527 #define MPC85xx_IRQ_TSEC3_TX (15 + MPC85xx_OPENPIC_IRQ_OFFSET)
528 #define MPC85xx_IRQ_TSEC3_RX (16 + MPC85xx_OPENPIC_IRQ_OFFSET)
529 #define MPC85xx_IRQ_TSEC3_ERROR (17 + MPC85xx_OPENPIC_IRQ_OFFSET)
530 #define MPC85xx_IRQ_TSEC1_ERROR (18 + MPC85xx_OPENPIC_IRQ_OFFSET)
531 #define MPC85xx_IRQ_TSEC2_TX (19 + MPC85xx_OPENPIC_IRQ_OFFSET)
532 #define MPC85xx_IRQ_TSEC2_RX (20 + MPC85xx_OPENPIC_IRQ_OFFSET)
533 #define MPC85xx_IRQ_TSEC4_TX (21 + MPC85xx_OPENPIC_IRQ_OFFSET)
534 #define MPC85xx_IRQ_TSEC4_RX (22 + MPC85xx_OPENPIC_IRQ_OFFSET)
535 #define MPC85xx_IRQ_TSEC4_ERROR (23 + MPC85xx_OPENPIC_IRQ_OFFSET)
536 #define MPC85xx_IRQ_TSEC2_ERROR (24 + MPC85xx_OPENPIC_IRQ_OFFSET)
537 #define MPC85xx_IRQ_FEC (25 + MPC85xx_OPENPIC_IRQ_OFFSET)
538 #define MPC85xx_IRQ_DUART (26 + MPC85xx_OPENPIC_IRQ_OFFSET)
539 #define MPC85xx_IRQ_IIC1 (27 + MPC85xx_OPENPIC_IRQ_OFFSET)
540 #define MPC85xx_IRQ_PERFMON (28 + MPC85xx_OPENPIC_IRQ_OFFSET)
541 #define MPC85xx_IRQ_SEC2 (29 + MPC85xx_OPENPIC_IRQ_OFFSET)
542 #define MPC85xx_IRQ_CPM (30 + MPC85xx_OPENPIC_IRQ_OFFSET)
544 /* The 12 external interrupt lines */
545 #define MPC85xx_IRQ_EXT0 (48 + MPC85xx_OPENPIC_IRQ_OFFSET)
546 #define MPC85xx_IRQ_EXT1 (49 + MPC85xx_OPENPIC_IRQ_OFFSET)
547 #define MPC85xx_IRQ_EXT2 (50 + MPC85xx_OPENPIC_IRQ_OFFSET)
548 #define MPC85xx_IRQ_EXT3 (51 + MPC85xx_OPENPIC_IRQ_OFFSET)
549 #define MPC85xx_IRQ_EXT4 (52 + MPC85xx_OPENPIC_IRQ_OFFSET)
550 #define MPC85xx_IRQ_EXT5 (53 + MPC85xx_OPENPIC_IRQ_OFFSET)
551 #define MPC85xx_IRQ_EXT6 (54 + MPC85xx_OPENPIC_IRQ_OFFSET)
552 #define MPC85xx_IRQ_EXT7 (55 + MPC85xx_OPENPIC_IRQ_OFFSET)
553 #define MPC85xx_IRQ_EXT8 (56 + MPC85xx_OPENPIC_IRQ_OFFSET)
554 #define MPC85xx_IRQ_EXT9 (57 + MPC85xx_OPENPIC_IRQ_OFFSET)
555 #define MPC85xx_IRQ_EXT10 (58 + MPC85xx_OPENPIC_IRQ_OFFSET)
556 #define MPC85xx_IRQ_EXT11 (59 + MPC85xx_OPENPIC_IRQ_OFFSET)
558 /* CPM related interrupts */
559 #define SIU_INT_ERROR ((uint)0x00+CPM_IRQ_OFFSET)
560 #define SIU_INT_I2C ((uint)0x01+CPM_IRQ_OFFSET)
561 #define SIU_INT_SPI ((uint)0x02+CPM_IRQ_OFFSET)
562 #define SIU_INT_RISC ((uint)0x03+CPM_IRQ_OFFSET)
563 #define SIU_INT_SMC1 ((uint)0x04+CPM_IRQ_OFFSET)
564 #define SIU_INT_SMC2 ((uint)0x05+CPM_IRQ_OFFSET)
565 #define SIU_INT_USB ((uint)0x0b+CPM_IRQ_OFFSET)
566 #define SIU_INT_TIMER1 ((uint)0x0c+CPM_IRQ_OFFSET)
567 #define SIU_INT_TIMER2 ((uint)0x0d+CPM_IRQ_OFFSET)
568 #define SIU_INT_TIMER3 ((uint)0x0e+CPM_IRQ_OFFSET)
569 #define SIU_INT_TIMER4 ((uint)0x0f+CPM_IRQ_OFFSET)
570 #define SIU_INT_FCC1 ((uint)0x20+CPM_IRQ_OFFSET)
571 #define SIU_INT_FCC2 ((uint)0x21+CPM_IRQ_OFFSET)
572 #define SIU_INT_FCC3 ((uint)0x22+CPM_IRQ_OFFSET)
573 #define SIU_INT_MCC1 ((uint)0x24+CPM_IRQ_OFFSET)
574 #define SIU_INT_MCC2 ((uint)0x25+CPM_IRQ_OFFSET)
575 #define SIU_INT_SCC1 ((uint)0x28+CPM_IRQ_OFFSET)
576 #define SIU_INT_SCC2 ((uint)0x29+CPM_IRQ_OFFSET)
577 #define SIU_INT_SCC3 ((uint)0x2a+CPM_IRQ_OFFSET)
578 #define SIU_INT_SCC4 ((uint)0x2b+CPM_IRQ_OFFSET)
579 #define SIU_INT_PC15 ((uint)0x30+CPM_IRQ_OFFSET)
580 #define SIU_INT_PC14 ((uint)0x31+CPM_IRQ_OFFSET)
581 #define SIU_INT_PC13 ((uint)0x32+CPM_IRQ_OFFSET)
582 #define SIU_INT_PC12 ((uint)0x33+CPM_IRQ_OFFSET)
583 #define SIU_INT_PC11 ((uint)0x34+CPM_IRQ_OFFSET)
584 #define SIU_INT_PC10 ((uint)0x35+CPM_IRQ_OFFSET)
585 #define SIU_INT_PC9 ((uint)0x36+CPM_IRQ_OFFSET)
586 #define SIU_INT_PC8 ((uint)0x37+CPM_IRQ_OFFSET)
587 #define SIU_INT_PC7 ((uint)0x38+CPM_IRQ_OFFSET)
588 #define SIU_INT_PC6 ((uint)0x39+CPM_IRQ_OFFSET)
589 #define SIU_INT_PC5 ((uint)0x3a+CPM_IRQ_OFFSET)
590 #define SIU_INT_PC4 ((uint)0x3b+CPM_IRQ_OFFSET)
591 #define SIU_INT_PC3 ((uint)0x3c+CPM_IRQ_OFFSET)
592 #define SIU_INT_PC2 ((uint)0x3d+CPM_IRQ_OFFSET)
593 #define SIU_INT_PC1 ((uint)0x3e+CPM_IRQ_OFFSET)
594 #define SIU_INT_PC0 ((uint)0x3f+CPM_IRQ_OFFSET)
596 #elif defined(CONFIG_PPC_86xx)
597 #include <asm/mpc86xx.h>
599 #define NR_EPIC_INTS 48
601 #define NR_8259_INTS 16 /*ULI 1575 can route 12 interrupts */
603 #define NUM_8259_INTERRUPTS NR_8259_INTS
606 #define I8259_OFFSET 0
611 /* Internal IRQs on MPC86xx OpenPIC */
613 #ifndef MPC86xx_OPENPIC_IRQ_OFFSET
614 #define MPC86xx_OPENPIC_IRQ_OFFSET NR_8259_INTS
617 /* The 48 internal sources */
618 #define MPC86xx_IRQ_NULL ( 0 + MPC86xx_OPENPIC_IRQ_OFFSET)
619 #define MPC86xx_IRQ_MCM ( 1 + MPC86xx_OPENPIC_IRQ_OFFSET)
620 #define MPC86xx_IRQ_DDR ( 2 + MPC86xx_OPENPIC_IRQ_OFFSET)
621 #define MPC86xx_IRQ_LBC ( 3 + MPC86xx_OPENPIC_IRQ_OFFSET)
622 #define MPC86xx_IRQ_DMA0 ( 4 + MPC86xx_OPENPIC_IRQ_OFFSET)
623 #define MPC86xx_IRQ_DMA1 ( 5 + MPC86xx_OPENPIC_IRQ_OFFSET)
624 #define MPC86xx_IRQ_DMA2 ( 6 + MPC86xx_OPENPIC_IRQ_OFFSET)
625 #define MPC86xx_IRQ_DMA3 ( 7 + MPC86xx_OPENPIC_IRQ_OFFSET)
628 #define MPC86xx_IRQ_UART2 (12 + MPC86xx_OPENPIC_IRQ_OFFSET)
629 #define MPC86xx_IRQ_TSEC1_TX (13 + MPC86xx_OPENPIC_IRQ_OFFSET)
630 #define MPC86xx_IRQ_TSEC1_RX (14 + MPC86xx_OPENPIC_IRQ_OFFSET)
631 #define MPC86xx_IRQ_TSEC3_TX (15 + MPC86xx_OPENPIC_IRQ_OFFSET)
632 #define MPC86xx_IRQ_TSEC3_RX (16 + MPC86xx_OPENPIC_IRQ_OFFSET)
633 #define MPC86xx_IRQ_TSEC3_ERROR (17 + MPC86xx_OPENPIC_IRQ_OFFSET)
634 #define MPC86xx_IRQ_TSEC1_ERROR (18 + MPC86xx_OPENPIC_IRQ_OFFSET)
635 #define MPC86xx_IRQ_TSEC2_TX (19 + MPC86xx_OPENPIC_IRQ_OFFSET)
636 #define MPC86xx_IRQ_TSEC2_RX (20 + MPC86xx_OPENPIC_IRQ_OFFSET)
637 #define MPC86xx_IRQ_TSEC4_TX (21 + MPC86xx_OPENPIC_IRQ_OFFSET)
638 #define MPC86xx_IRQ_TSEC4_RX (22 + MPC86xx_OPENPIC_IRQ_OFFSET)
639 #define MPC86xx_IRQ_TSEC4_ERROR (23 + MPC86xx_OPENPIC_IRQ_OFFSET)
640 #define MPC86xx_IRQ_TSEC2_ERROR (24 + MPC86xx_OPENPIC_IRQ_OFFSET)
642 #define MPC86xx_IRQ_UART1 (26 + MPC86xx_OPENPIC_IRQ_OFFSET)
643 #define MPC86xx_IRQ_IIC (27 + MPC86xx_OPENPIC_IRQ_OFFSET)
644 #define MPC86xx_IRQ_PERFMON (28 + MPC86xx_OPENPIC_IRQ_OFFSET)
646 #define MPC86xx_IRQ_SRIO_ERROR (32 + MPC86xx_OPENPIC_IRQ_OFFSET)
647 #define MPC86xx_IRQ_SRIO_OUT_BELL (33 + MPC86xx_OPENPIC_IRQ_OFFSET)
648 #define MPC86xx_IRQ_SRIO_IN_BELL (34 + MPC86xx_OPENPIC_IRQ_OFFSET)
650 #define MPC86xx_IRQ_SRIO_OUT_MSG1 (37 + MPC86xx_OPENPIC_IRQ_OFFSET)
651 #define MPC86xx_IRQ_SRIO_IN_MSG1 (38 + MPC86xx_OPENPIC_IRQ_OFFSET)
652 #define MPC86xx_IRQ_SRIO_OUT_MSG2 (39 + MPC86xx_OPENPIC_IRQ_OFFSET)
653 #define MPC86xx_IRQ_SRIO_IN_MSG2 (40 + MPC86xx_OPENPIC_IRQ_OFFSET)
655 /* The 12 external interrupt lines */
656 #define MPC86xx_IRQ_EXT_BASE 48
657 #define MPC86xx_IRQ_EXT0 (0 + MPC86xx_IRQ_EXT_BASE \
658 + MPC86xx_OPENPIC_IRQ_OFFSET)
659 #define MPC86xx_IRQ_EXT1 (1 + MPC86xx_IRQ_EXT_BASE \
660 + MPC86xx_OPENPIC_IRQ_OFFSET)
661 #define MPC86xx_IRQ_EXT2 (2 + MPC86xx_IRQ_EXT_BASE \
662 + MPC86xx_OPENPIC_IRQ_OFFSET)
663 #define MPC86xx_IRQ_EXT3 (3 + MPC86xx_IRQ_EXT_BASE \
664 + MPC86xx_OPENPIC_IRQ_OFFSET)
665 #define MPC86xx_IRQ_EXT4 (4 + MPC86xx_IRQ_EXT_BASE \
666 + MPC86xx_OPENPIC_IRQ_OFFSET)
667 #define MPC86xx_IRQ_EXT5 (5 + MPC86xx_IRQ_EXT_BASE \
668 + MPC86xx_OPENPIC_IRQ_OFFSET)
669 #define MPC86xx_IRQ_EXT6 (6 + MPC86xx_IRQ_EXT_BASE \
670 + MPC86xx_OPENPIC_IRQ_OFFSET)
671 #define MPC86xx_IRQ_EXT7 (7 + MPC86xx_IRQ_EXT_BASE \
672 + MPC86xx_OPENPIC_IRQ_OFFSET)
673 #define MPC86xx_IRQ_EXT8 (8 + MPC86xx_IRQ_EXT_BASE \
674 + MPC86xx_OPENPIC_IRQ_OFFSET)
675 #define MPC86xx_IRQ_EXT9 (9 + MPC86xx_IRQ_EXT_BASE \
676 + MPC86xx_OPENPIC_IRQ_OFFSET)
677 #define MPC86xx_IRQ_EXT10 (10 + MPC86xx_IRQ_EXT_BASE \
678 + MPC86xx_OPENPIC_IRQ_OFFSET)
679 #define MPC86xx_IRQ_EXT11 (11 + MPC86xx_IRQ_EXT_BASE \
680 + MPC86xx_OPENPIC_IRQ_OFFSET)
682 #else /* CONFIG_40x + CONFIG_8xx */
684 * this is the # irq's for all ppc arch's (pmac/chrp/prep)
685 * so it is the max of them all
688 #define __DO_IRQ_CANON 1
692 #define NUM_8259_INTERRUPTS 16
694 #else /* CONFIG_8260 */
696 /* The 8260 has an internal interrupt controller with a maximum of
697 * 64 IRQs. We will use NR_IRQs from above since it is large enough.
698 * Don't be confused by the 8260 documentation where they list an
699 * "interrupt number" and "interrupt vector". We are only interested
700 * in the interrupt vector. There are "reserved" holes where the
701 * vector number increases, but the interrupt number in the table does not.
702 * (Document errata updates have fixed this...make sure you have up to
703 * date processor documentation -- Dan).
706 #ifndef CPM_IRQ_OFFSET
707 #define CPM_IRQ_OFFSET 0
710 #define NR_CPM_INTS 64
712 #define SIU_INT_ERROR ((uint)0x00 + CPM_IRQ_OFFSET)
713 #define SIU_INT_I2C ((uint)0x01 + CPM_IRQ_OFFSET)
714 #define SIU_INT_SPI ((uint)0x02 + CPM_IRQ_OFFSET)
715 #define SIU_INT_RISC ((uint)0x03 + CPM_IRQ_OFFSET)
716 #define SIU_INT_SMC1 ((uint)0x04 + CPM_IRQ_OFFSET)
717 #define SIU_INT_SMC2 ((uint)0x05 + CPM_IRQ_OFFSET)
718 #define SIU_INT_IDMA1 ((uint)0x06 + CPM_IRQ_OFFSET)
719 #define SIU_INT_IDMA2 ((uint)0x07 + CPM_IRQ_OFFSET)
720 #define SIU_INT_IDMA3 ((uint)0x08 + CPM_IRQ_OFFSET)
721 #define SIU_INT_IDMA4 ((uint)0x09 + CPM_IRQ_OFFSET)
722 #define SIU_INT_SDMA ((uint)0x0a + CPM_IRQ_OFFSET)
723 #define SIU_INT_USB ((uint)0x0b + CPM_IRQ_OFFSET)
724 #define SIU_INT_TIMER1 ((uint)0x0c + CPM_IRQ_OFFSET)
725 #define SIU_INT_TIMER2 ((uint)0x0d + CPM_IRQ_OFFSET)
726 #define SIU_INT_TIMER3 ((uint)0x0e + CPM_IRQ_OFFSET)
727 #define SIU_INT_TIMER4 ((uint)0x0f + CPM_IRQ_OFFSET)
728 #define SIU_INT_TMCNT ((uint)0x10 + CPM_IRQ_OFFSET)
729 #define SIU_INT_PIT ((uint)0x11 + CPM_IRQ_OFFSET)
730 #define SIU_INT_PCI ((uint)0x12 + CPM_IRQ_OFFSET)
731 #define SIU_INT_IRQ1 ((uint)0x13 + CPM_IRQ_OFFSET)
732 #define SIU_INT_IRQ2 ((uint)0x14 + CPM_IRQ_OFFSET)
733 #define SIU_INT_IRQ3 ((uint)0x15 + CPM_IRQ_OFFSET)
734 #define SIU_INT_IRQ4 ((uint)0x16 + CPM_IRQ_OFFSET)
735 #define SIU_INT_IRQ5 ((uint)0x17 + CPM_IRQ_OFFSET)
736 #define SIU_INT_IRQ6 ((uint)0x18 + CPM_IRQ_OFFSET)
737 #define SIU_INT_IRQ7 ((uint)0x19 + CPM_IRQ_OFFSET)
738 #define SIU_INT_FCC1 ((uint)0x20 + CPM_IRQ_OFFSET)
739 #define SIU_INT_FCC2 ((uint)0x21 + CPM_IRQ_OFFSET)
740 #define SIU_INT_FCC3 ((uint)0x22 + CPM_IRQ_OFFSET)
741 #define SIU_INT_MCC1 ((uint)0x24 + CPM_IRQ_OFFSET)
742 #define SIU_INT_MCC2 ((uint)0x25 + CPM_IRQ_OFFSET)
743 #define SIU_INT_SCC1 ((uint)0x28 + CPM_IRQ_OFFSET)
744 #define SIU_INT_SCC2 ((uint)0x29 + CPM_IRQ_OFFSET)
745 #define SIU_INT_SCC3 ((uint)0x2a + CPM_IRQ_OFFSET)
746 #define SIU_INT_SCC4 ((uint)0x2b + CPM_IRQ_OFFSET)
747 #define SIU_INT_PC15 ((uint)0x30 + CPM_IRQ_OFFSET)
748 #define SIU_INT_PC14 ((uint)0x31 + CPM_IRQ_OFFSET)
749 #define SIU_INT_PC13 ((uint)0x32 + CPM_IRQ_OFFSET)
750 #define SIU_INT_PC12 ((uint)0x33 + CPM_IRQ_OFFSET)
751 #define SIU_INT_PC11 ((uint)0x34 + CPM_IRQ_OFFSET)
752 #define SIU_INT_PC10 ((uint)0x35 + CPM_IRQ_OFFSET)
753 #define SIU_INT_PC9 ((uint)0x36 + CPM_IRQ_OFFSET)
754 #define SIU_INT_PC8 ((uint)0x37 + CPM_IRQ_OFFSET)
755 #define SIU_INT_PC7 ((uint)0x38 + CPM_IRQ_OFFSET)
756 #define SIU_INT_PC6 ((uint)0x39 + CPM_IRQ_OFFSET)
757 #define SIU_INT_PC5 ((uint)0x3a + CPM_IRQ_OFFSET)
758 #define SIU_INT_PC4 ((uint)0x3b + CPM_IRQ_OFFSET)
759 #define SIU_INT_PC3 ((uint)0x3c + CPM_IRQ_OFFSET)
760 #define SIU_INT_PC2 ((uint)0x3d + CPM_IRQ_OFFSET)
761 #define SIU_INT_PC1 ((uint)0x3e + CPM_IRQ_OFFSET)
762 #define SIU_INT_PC0 ((uint)0x3f + CPM_IRQ_OFFSET)
764 #endif /* CONFIG_8260 */
766 #endif /* Whatever way too big #ifdef */
768 #define NR_MASK_WORDS ((NR_IRQS + 31) / 32)
769 /* pedantic: these are long because they are used with set_bit --RR */
770 extern unsigned long ppc_cached_irq_mask[NR_MASK_WORDS];
773 * Because many systems have two overlapping names spaces for
774 * interrupts (ISA and XICS for example), and the ISA interrupts
775 * have historically not been easy to renumber, we allow ISA
776 * interrupts to take values 0 - 15, and shift up the remaining
777 * interrupts by 0x10.
779 #define NUM_ISA_INTERRUPTS 0x10
780 extern int __irq_offset_value;
782 static inline int irq_offset_up(int irq)
784 return(irq + __irq_offset_value);
787 static inline int irq_offset_down(int irq)
789 return(irq - __irq_offset_value);
792 static inline int irq_offset_value(void)
794 return __irq_offset_value;
797 #ifdef __DO_IRQ_CANON
798 extern int ppc_do_canonicalize_irqs;
800 #define ppc_do_canonicalize_irqs 0
803 static __inline__ int irq_canonicalize(int irq)
805 if (ppc_do_canonicalize_irqs && irq == 2)
809 #endif /* CONFIG_PPC_MERGE */
811 extern int distribute_irqs;
816 #define __ARCH_HAS_DO_SOFTIRQ
818 extern void __do_softirq(void);
820 #ifdef CONFIG_IRQSTACKS
822 * Per-cpu stacks for handling hard and soft interrupts.
824 extern struct thread_info *hardirq_ctx[NR_CPUS];
825 extern struct thread_info *softirq_ctx[NR_CPUS];
827 extern void irq_ctx_init(void);
828 extern void call_do_softirq(struct thread_info *tp);
829 extern int call_handle_irq(int irq, void *p1, void *p2,
830 struct thread_info *tp, void *func);
832 #define irq_ctx_init()
834 #endif /* CONFIG_IRQSTACKS */
836 extern void do_IRQ(struct pt_regs *regs);
838 #endif /* _ASM_IRQ_H */
839 #endif /* __KERNEL__ */