diff options
Diffstat (limited to 'include/asm-powerpc/irq.h')
| -rw-r--r-- | include/asm-powerpc/irq.h | 654 |
1 files changed, 0 insertions, 654 deletions
diff --git a/include/asm-powerpc/irq.h b/include/asm-powerpc/irq.h deleted file mode 100644 index 1ef8e30..0000000 --- a/include/asm-powerpc/irq.h +++ /dev/null @@ -1,654 +0,0 @@ -#ifdef __KERNEL__ -#ifndef _ASM_POWERPC_IRQ_H -#define _ASM_POWERPC_IRQ_H - -/* - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. - */ - -#include <linux/threads.h> -#include <linux/list.h> -#include <linux/radix-tree.h> - -#include <asm/types.h> -#include <asm/atomic.h> - - -#define get_irq_desc(irq) (&irq_desc[(irq)]) - -/* Define a way to iterate across irqs. */ -#define for_each_irq(i) \ - for ((i) = 0; (i) < NR_IRQS; ++(i)) - -extern atomic_t ppc_n_lost_interrupts; - -#ifdef CONFIG_PPC_MERGE - -/* This number is used when no interrupt has been assigned */ -#define NO_IRQ (0) - -/* This is a special irq number to return from get_irq() to tell that - * no interrupt happened _and_ ignore it (don't count it as bad). Some - * platforms like iSeries rely on that. - */ -#define NO_IRQ_IGNORE ((unsigned int)-1) - -/* Total number of virq in the platform (make it a CONFIG_* option ? */ -#define NR_IRQS 512 - -/* Number of irqs reserved for the legacy controller */ -#define NUM_ISA_INTERRUPTS 16 - -/* This type is the placeholder for a hardware interrupt number. It has to - * be big enough to enclose whatever representation is used by a given - * platform. - */ -typedef unsigned long irq_hw_number_t; - -/* Interrupt controller "host" data structure. This could be defined as a - * irq domain controller. That is, it handles the mapping between hardware - * and virtual interrupt numbers for a given interrupt domain. The host - * structure is generally created by the PIC code for a given PIC instance - * (though a host can cover more than one PIC if they have a flat number - * model). It's the host callbacks that are responsible for setting the - * irq_chip on a given irq_desc after it's been mapped. - * - * The host code and data structures are fairly agnostic to the fact that - * we use an open firmware device-tree. We do have references to struct - * device_node in two places: in irq_find_host() to find the host matching - * a given interrupt controller node, and of course as an argument to its - * counterpart host->ops->match() callback. However, those are treated as - * generic pointers by the core and the fact that it's actually a device-node - * pointer is purely a convention between callers and implementation. This - * code could thus be used on other architectures by replacing those two - * by some sort of arch-specific void * "token" used to identify interrupt - * controllers. - */ -struct irq_host; -struct radix_tree_root; - -/* Functions below are provided by the host and called whenever a new mapping - * is created or an old mapping is disposed. The host can then proceed to - * whatever internal data structures management is required. It also needs - * to setup the irq_desc when returning from map(). - */ -struct irq_host_ops { - /* Match an interrupt controller device node to a host, returns - * 1 on a match - */ - int (*match)(struct irq_host *h, struct device_node *node); - - /* Create or update a mapping between a virtual irq number and a hw - * irq number. This is called only once for a given mapping. - */ - int (*map)(struct irq_host *h, unsigned int virq, irq_hw_number_t hw); - - /* Dispose of such a mapping */ - void (*unmap)(struct irq_host *h, unsigned int virq); - - /* Update of such a mapping */ - void (*remap)(struct irq_host *h, unsigned int virq, irq_hw_number_t hw); - - /* Translate device-tree interrupt specifier from raw format coming - * from the firmware to a irq_hw_number_t (interrupt line number) and - * type (sense) that can be passed to set_irq_type(). In the absence - * of this callback, irq_create_of_mapping() and irq_of_parse_and_map() - * will return the hw number in the first cell and IRQ_TYPE_NONE for - * the type (which amount to keeping whatever default value the - * interrupt controller has for that line) - */ - int (*xlate)(struct irq_host *h, struct device_node *ctrler, - u32 *intspec, unsigned int intsize, - irq_hw_number_t *out_hwirq, unsigned int *out_type); -}; - -struct irq_host { - struct list_head link; - - /* type of reverse mapping technique */ - unsigned int revmap_type; -#define IRQ_HOST_MAP_LEGACY 0 /* legacy 8259, gets irqs 1..15 */ -#define IRQ_HOST_MAP_NOMAP 1 /* no fast reverse mapping */ -#define IRQ_HOST_MAP_LINEAR 2 /* linear map of interrupts */ -#define IRQ_HOST_MAP_TREE 3 /* radix tree */ - union { - struct { - unsigned int size; - unsigned int *revmap; - } linear; - struct radix_tree_root tree; - } revmap_data; - struct irq_host_ops *ops; - void *host_data; - irq_hw_number_t inval_irq; - - /* Optional device node pointer */ - struct device_node *of_node; -}; - -/* The main irq map itself is an array of NR_IRQ entries containing the - * associate host and irq number. An entry with a host of NULL is free. - * An entry can be allocated if it's free, the allocator always then sets - * hwirq first to the host's invalid irq number and then fills ops. - */ -struct irq_map_entry { - irq_hw_number_t hwirq; - struct irq_host *host; -}; - -extern struct irq_map_entry irq_map[NR_IRQS]; - -extern irq_hw_number_t virq_to_hw(unsigned int virq); - -/** - * irq_alloc_host - Allocate a new irq_host data structure - * @of_node: optional device-tree node of the interrupt controller - * @revmap_type: type of reverse mapping to use - * @revmap_arg: for IRQ_HOST_MAP_LINEAR linear only: size of the map - * @ops: map/unmap host callbacks - * @inval_irq: provide a hw number in that host space that is always invalid - * - * Allocates and initialize and irq_host structure. Note that in the case of - * IRQ_HOST_MAP_LEGACY, the map() callback will be called before this returns - * for all legacy interrupts except 0 (which is always the invalid irq for - * a legacy controller). For a IRQ_HOST_MAP_LINEAR, the map is allocated by - * this call as well. For a IRQ_HOST_MAP_TREE, the radix tree will be allocated - * later during boot automatically (the reverse mapping will use the slow path - * until that happens). - */ -extern struct irq_host *irq_alloc_host(struct device_node *of_node, - unsigned int revmap_type, - unsigned int revmap_arg, - struct irq_host_ops *ops, - irq_hw_number_t inval_irq); - - -/** - * irq_find_host - Locates a host for a given device node - * @node: device-tree node of the interrupt controller - */ -extern struct irq_host *irq_find_host(struct device_node *node); - - -/** - * irq_set_default_host - Set a "default" host - * @host: default host pointer - * - * For convenience, it's possible to set a "default" host that will be used - * whenever NULL is passed to irq_create_mapping(). It makes life easier for - * platforms that want to manipulate a few hard coded interrupt numbers that - * aren't properly represented in the device-tree. - */ -extern void irq_set_default_host(struct irq_host *host); - - -/** - * irq_set_virq_count - Set the maximum number of virt irqs - * @count: number of linux virtual irqs, capped with NR_IRQS - * - * This is mainly for use by platforms like iSeries who want to program - * the virtual irq number in the controller to avoid the reverse mapping - */ -extern void irq_set_virq_count(unsigned int count); - - -/** - * irq_create_mapping - Map a hardware interrupt into linux virq space - * @host: host owning this hardware interrupt or NULL for default host - * @hwirq: hardware irq number in that host space - * - * Only one mapping per hardware interrupt is permitted. Returns a linux - * virq number. - * If the sense/trigger is to be specified, set_irq_type() should be called - * on the number returned from that call. - */ -extern unsigned int irq_create_mapping(struct irq_host *host, - irq_hw_number_t hwirq); - - -/** - * irq_dispose_mapping - Unmap an interrupt - * @virq: linux virq number of the interrupt to unmap - */ -extern void irq_dispose_mapping(unsigned int virq); - -/** - * irq_find_mapping - Find a linux virq from an hw irq number. - * @host: host owning this hardware interrupt - * @hwirq: hardware irq number in that host space - * - * This is a slow path, for use by generic code. It's expected that an - * irq controller implementation directly calls the appropriate low level - * mapping function. - */ -extern unsigned int irq_find_mapping(struct irq_host *host, - irq_hw_number_t hwirq); - -/** - * irq_create_direct_mapping - Allocate a virq for direct mapping - * @host: host to allocate the virq for or NULL for default host - * - * This routine is used for irq controllers which can choose the hardware - * interrupt numbers they generate. In such a case it's simplest to use - * the linux virq as the hardware interrupt number. - */ -extern unsigned int irq_create_direct_mapping(struct irq_host *host); - -/** - * irq_radix_revmap - Find a linux virq from a hw irq number. - * @host: host owning this hardware interrupt - * @hwirq: hardware irq number in that host space - * - * This is a fast path, for use by irq controller code that uses radix tree - * revmaps - */ -extern unsigned int irq_radix_revmap(struct irq_host *host, - irq_hw_number_t hwirq); - -/** - * irq_linear_revmap - Find a linux virq from a hw irq number. - * @host: host owning this hardware interrupt - * @hwirq: hardware irq number in that host space - * - * This is a fast path, for use by irq controller code that uses linear - * revmaps. It does fallback to the slow path if the revmap doesn't exist - * yet and will create the revmap entry with appropriate locking - */ - -extern unsigned int irq_linear_revmap(struct irq_host *host, - irq_hw_number_t hwirq); - - - -/** - * irq_alloc_virt - Allocate virtual irq numbers - * @host: host owning these new virtual irqs - * @count: number of consecutive numbers to allocate - * @hint: pass a hint number, the allocator will try to use a 1:1 mapping - * - * This is a low level function that is used internally by irq_create_mapping() - * and that can be used by some irq controllers implementations for things - * like allocating ranges of numbers for MSIs. The revmaps are left untouched. - */ -extern unsigned int irq_alloc_virt(struct irq_host *host, - unsigned int count, - unsigned int hint); - -/** - * irq_free_virt - Free virtual irq numbers - * @virq: virtual irq number of the first interrupt to free - * @count: number of interrupts to free - * - * This function is the opposite of irq_alloc_virt. It will not clear reverse - * maps, this should be done previously by unmap'ing the interrupt. In fact, - * all interrupts covered by the range being freed should have been unmapped - * prior to calling this. - */ -extern void irq_free_virt(unsigned int virq, unsigned int count); - - -/* -- OF helpers -- */ - -/* irq_create_of_mapping - Map a hardware interrupt into linux virq space - * @controller: Device node of the interrupt controller - * @inspec: Interrupt specifier from the device-tree - * @intsize: Size of the interrupt specifier from the device-tree - * - * This function is identical to irq_create_mapping except that it takes - * as input informations straight from the device-tree (typically the results - * of the of_irq_map_*() functions. - */ -extern unsigned int irq_create_of_mapping(struct device_node *controller, - u32 *intspec, unsigned int intsize); - - -/* irq_of_parse_and_map - Parse nad Map an interrupt into linux virq space - * @device: Device node of the device whose interrupt is to be mapped - * @index: Index of the interrupt to map - * - * This function is a wrapper that chains of_irq_map_one() and - * irq_create_of_mapping() to make things easier to callers - */ -extern unsigned int irq_of_parse_and_map(struct device_node *dev, int index); - -/* -- End OF helpers -- */ - -/** - * irq_early_init - Init irq remapping subsystem - */ -extern void irq_early_init(void); - -static __inline__ int irq_canonicalize(int irq) -{ - return irq; -} - - -#else /* CONFIG_PPC_MERGE */ - -/* This number is used when no interrupt has been assigned */ -#define NO_IRQ (-1) -#define NO_IRQ_IGNORE (-2) - - -/* - * These constants are used for passing information about interrupt - * signal polarity and level/edge sensing to the low-level PIC chip - * drivers. - */ -#define IRQ_SENSE_MASK 0x1 -#define IRQ_SENSE_LEVEL 0x1 /* interrupt on active level */ -#define IRQ_SENSE_EDGE 0x0 /* interrupt triggered by edge */ - -#define IRQ_POLARITY_MASK 0x2 -#define IRQ_POLARITY_POSITIVE 0x2 /* high level or low->high edge */ -#define IRQ_POLARITY_NEGATIVE 0x0 /* low level or high->low edge */ - - -#if defined(CONFIG_40x) -#include <asm/ibm4xx.h> - -#ifndef NR_BOARD_IRQS -#define NR_BOARD_IRQS 0 -#endif - -#ifndef UIC_WIDTH /* Number of interrupts per device */ -#define UIC_WIDTH 32 -#endif - -#ifndef NR_UICS /* number of UIC devices */ -#define NR_UICS 1 -#endif - -#if defined (CONFIG_403) -/* - * The PowerPC 403 cores' Asynchronous Interrupt Controller (AIC) has - * 32 possible interrupts, a majority of which are not implemented on - * all cores. There are six configurable, external interrupt pins and - * there are eight internal interrupts for the on-chip serial port - * (SPU), DMA controller, and JTAG controller. - * - */ - -#define NR_AIC_IRQS 32 -#define NR_IRQS (NR_AIC_IRQS + NR_BOARD_IRQS) - -#elif !defined (CONFIG_403) - -/* - * The PowerPC 405 cores' Universal Interrupt Controller (UIC) has 32 - * possible interrupts as well. There are seven, configurable external - * interrupt pins and there are 17 internal interrupts for the on-chip - * serial port, DMA controller, on-chip Ethernet controller, PCI, etc. - * - */ - - -#define NR_UIC_IRQS UIC_WIDTH -#define NR_IRQS ((NR_UIC_IRQS * NR_UICS) + NR_BOARD_IRQS) -#endif - -#elif defined(CONFIG_44x) -#include <asm/ibm44x.h> - -#define NR_UIC_IRQS 32 -#define NR_IRQS ((NR_UIC_IRQS * NR_UICS) + NR_BOARD_IRQS) - -#elif defined(CONFIG_8xx) - -/* Now include the board configuration specific associations. -*/ -#include <asm/mpc8xx.h> - -/* The MPC8xx cores have 16 possible interrupts. There are eight - * possible level sensitive interrupts assigned and generated internally - * from such devices as CPM, PCMCIA, RTC, PIT, TimeBase and Decrementer. - * There are eight external interrupts (IRQs) that can be configured - * as either level or edge sensitive. - * - * On some implementations, there is also the possibility of an 8259 - * through the PCI and PCI-ISA bridges. - * - * We are "flattening" the interrupt vectors of the cascaded CPM - * and 8259 interrupt controllers so that we can uniquely identify - * any interrupt source with a single integer. - */ -#define NR_SIU_INTS 16 -#define NR_CPM_INTS 32 -#ifndef NR_8259_INTS -#define NR_8259_INTS 0 -#endif - -#define SIU_IRQ_OFFSET 0 -#define CPM_IRQ_OFFSET (SIU_IRQ_OFFSET + NR_SIU_INTS) -#define I8259_IRQ_OFFSET (CPM_IRQ_OFFSET + NR_CPM_INTS) - -#define NR_IRQS (NR_SIU_INTS + NR_CPM_INTS + NR_8259_INTS) - -/* These values must be zero-based and map 1:1 with the SIU configuration. - * They are used throughout the 8xx I/O subsystem to generate - * interrupt masks, flags, and other control patterns. This is why the - * current kernel assumption of the 8259 as the base controller is such - * a pain in the butt. - */ -#define SIU_IRQ0 (0) /* Highest priority */ -#define SIU_LEVEL0 (1) -#define SIU_IRQ1 (2) -#define SIU_LEVEL1 (3) -#define SIU_IRQ2 (4) -#define SIU_LEVEL2 (5) -#define SIU_IRQ3 (6) -#define SIU_LEVEL3 (7) -#define SIU_IRQ4 (8) -#define SIU_LEVEL4 (9) -#define SIU_IRQ5 (10) -#define SIU_LEVEL5 (11) -#define SIU_IRQ6 (12) -#define SIU_LEVEL6 (13) -#define SIU_IRQ7 (14) -#define SIU_LEVEL7 (15) - -#define MPC8xx_INT_FEC1 SIU_LEVEL1 -#define MPC8xx_INT_FEC2 SIU_LEVEL3 - -#define MPC8xx_INT_SCC1 (CPM_IRQ_OFFSET + CPMVEC_SCC1) -#define MPC8xx_INT_SCC2 (CPM_IRQ_OFFSET + CPMVEC_SCC2) -#define MPC8xx_INT_SCC3 (CPM_IRQ_OFFSET + CPMVEC_SCC3) -#define MPC8xx_INT_SCC4 (CPM_IRQ_OFFSET + CPMVEC_SCC4) -#define MPC8xx_INT_SMC1 (CPM_IRQ_OFFSET + CPMVEC_SMC1) -#define MPC8xx_INT_SMC2 (CPM_IRQ_OFFSET + CPMVEC_SMC2) - -/* The internal interrupts we can configure as we see fit. - * My personal preference is CPM at level 2, which puts it above the - * MBX PCI/ISA/IDE interrupts. - */ -#ifndef PIT_INTERRUPT -#define PIT_INTERRUPT SIU_LEVEL0 -#endif -#ifndef CPM_INTERRUPT -#define CPM_INTERRUPT SIU_LEVEL2 -#endif -#ifndef PCMCIA_INTERRUPT -#define PCMCIA_INTERRUPT SIU_LEVEL6 -#endif -#ifndef DEC_INTERRUPT -#define DEC_INTERRUPT SIU_LEVEL7 -#endif - -/* Some internal interrupt registers use an 8-bit mask for the interrupt - * level instead of a number. - */ -#define mk_int_int_mask(IL) (1 << (7 - (IL/2))) - -#else /* CONFIG_40x + CONFIG_8xx */ -/* - * this is the # irq's for all ppc arch's (pmac/chrp/prep) - * so it is the max of them all - */ -#define NR_IRQS 256 -#define __DO_IRQ_CANON 1 - -#ifndef CONFIG_8260 - -#define NUM_8259_INTERRUPTS 16 - -#else /* CONFIG_8260 */ - -/* The 8260 has an internal interrupt controller with a maximum of - * 64 IRQs. We will use NR_IRQs from above since it is large enough. - * Don't be confused by the 8260 documentation where they list an - * "interrupt number" and "interrupt vector". We are only interested - * in the interrupt vector. There are "reserved" holes where the - * vector number increases, but the interrupt number in the table does not. - * (Document errata updates have fixed this...make sure you have up to - * date processor documentation -- Dan). - */ - -#ifndef CPM_IRQ_OFFSET -#define CPM_IRQ_OFFSET 0 -#endif - -#define NR_CPM_INTS 64 - -#define SIU_INT_ERROR ((uint)0x00 + CPM_IRQ_OFFSET) -#define SIU_INT_I2C ((uint)0x01 + CPM_IRQ_OFFSET) -#define SIU_INT_SPI ((uint)0x02 + CPM_IRQ_OFFSET) -#define SIU_INT_RISC ((uint)0x03 + CPM_IRQ_OFFSET) -#define SIU_INT_SMC1 ((uint)0x04 + CPM_IRQ_OFFSET) -#define SIU_INT_SMC2 ((uint)0x05 + CPM_IRQ_OFFSET) -#define SIU_INT_IDMA1 ((uint)0x06 + CPM_IRQ_OFFSET) -#define SIU_INT_IDMA2 ((uint)0x07 + CPM_IRQ_OFFSET) -#define SIU_INT_IDMA3 ((uint)0x08 + CPM_IRQ_OFFSET) -#define SIU_INT_IDMA4 ((uint)0x09 + CPM_IRQ_OFFSET) -#define SIU_INT_SDMA ((uint)0x0a + CPM_IRQ_OFFSET) -#define SIU_INT_USB ((uint)0x0b + CPM_IRQ_OFFSET) -#define SIU_INT_TIMER1 ((uint)0x0c + CPM_IRQ_OFFSET) -#define SIU_INT_TIMER2 ((uint)0x0d + CPM_IRQ_OFFSET) -#define SIU_INT_TIMER3 ((uint)0x0e + CPM_IRQ_OFFSET) -#define SIU_INT_TIMER4 ((uint)0x0f + CPM_IRQ_OFFSET) -#define SIU_INT_TMCNT ((uint)0x10 + CPM_IRQ_OFFSET) -#define SIU_INT_PIT ((uint)0x11 + CPM_IRQ_OFFSET) -#define SIU_INT_PCI ((uint)0x12 + CPM_IRQ_OFFSET) -#define SIU_INT_IRQ1 ((uint)0x13 + CPM_IRQ_OFFSET) -#define SIU_INT_IRQ2 ((uint)0x14 + CPM_IRQ_OFFSET) -#define SIU_INT_IRQ3 ((uint)0x15 + CPM_IRQ_OFFSET) -#define SIU_INT_IRQ4 ((uint)0x16 + CPM_IRQ_OFFSET) -#define SIU_INT_IRQ5 ((uint)0x17 + CPM_IRQ_OFFSET) -#define SIU_INT_IRQ6 ((uint)0x18 + CPM_IRQ_OFFSET) -#define SIU_INT_IRQ7 ((uint)0x19 + CPM_IRQ_OFFSET) -#define SIU_INT_FCC1 ((uint)0x20 + CPM_IRQ_OFFSET) -#define SIU_INT_FCC2 ((uint)0x21 + CPM_IRQ_OFFSET) -#define SIU_INT_FCC3 ((uint)0x22 + CPM_IRQ_OFFSET) -#define SIU_INT_MCC1 ((uint)0x24 + CPM_IRQ_OFFSET) -#define SIU_INT_MCC2 ((uint)0x25 + CPM_IRQ_OFFSET) -#define SIU_INT_SCC1 ((uint)0x28 + CPM_IRQ_OFFSET) -#define SIU_INT_SCC2 ((uint)0x29 + CPM_IRQ_OFFSET) -#define SIU_INT_SCC3 ((uint)0x2a + CPM_IRQ_OFFSET) -#define SIU_INT_SCC4 ((uint)0x2b + CPM_IRQ_OFFSET) -#define SIU_INT_PC15 ((uint)0x30 + CPM_IRQ_OFFSET) -#define SIU_INT_PC14 ((uint)0x31 + CPM_IRQ_OFFSET) -#define SIU_INT_PC13 ((uint)0x32 + CPM_IRQ_OFFSET) -#define SIU_INT_PC12 ((uint)0x33 + CPM_IRQ_OFFSET) -#define SIU_INT_PC11 ((uint)0x34 + CPM_IRQ_OFFSET) -#define SIU_INT_PC10 ((uint)0x35 + CPM_IRQ_OFFSET) -#define SIU_INT_PC9 ((uint)0x36 + CPM_IRQ_OFFSET) -#define SIU_INT_PC8 ((uint)0x37 + CPM_IRQ_OFFSET) -#define SIU_INT_PC7 ((uint)0x38 + CPM_IRQ_OFFSET) -#define SIU_INT_PC6 ((uint)0x39 + CPM_IRQ_OFFSET) -#define SIU_INT_PC5 ((uint)0x3a + CPM_IRQ_OFFSET) -#define SIU_INT_PC4 ((uint)0x3b + CPM_IRQ_OFFSET) -#define SIU_INT_PC3 ((uint)0x3c + CPM_IRQ_OFFSET) -#define SIU_INT_PC2 ((uint)0x3d + CPM_IRQ_OFFSET) -#define SIU_INT_PC1 ((uint)0x3e + CPM_IRQ_OFFSET) -#define SIU_INT_PC0 ((uint)0x3f + CPM_IRQ_OFFSET) - -#endif /* CONFIG_8260 */ - -#endif /* Whatever way too big #ifdef */ - -#define NR_MASK_WORDS ((NR_IRQS + 31) / 32) -/* pedantic: these are long because they are used with set_bit --RR */ -extern unsigned long ppc_cached_irq_mask[NR_MASK_WORDS]; - -/* - * Because many systems have two overlapping names spaces for - * interrupts (ISA and XICS for example), and the ISA interrupts - * have historically not been easy to renumber, we allow ISA - * interrupts to take values 0 - 15, and shift up the remaining - * interrupts by 0x10. - */ -#define NUM_ISA_INTERRUPTS 0x10 -extern int __irq_offset_value; - -static inline int irq_offset_up(int irq) -{ - return(irq + __irq_offset_value); -} - -static inline int irq_offset_down(int irq) -{ - return(irq - __irq_offset_value); -} - -static inline int irq_offset_value(void) -{ - return __irq_offset_value; -} - -#ifdef __DO_IRQ_CANON -extern int ppc_do_canonicalize_irqs; -#else -#define ppc_do_canonicalize_irqs 0 -#endif - -static __inline__ int irq_canonicalize(int irq) -{ - if (ppc_do_canonicalize_irqs && irq == 2) - irq = 9; - return irq; -} -#endif /* CONFIG_PPC_MERGE */ - -extern int distribute_irqs; - -struct irqaction; -struct pt_regs; - -#define __ARCH_HAS_DO_SOFTIRQ - -#if defined(CONFIG_BOOKE) || defined(CONFIG_40x) -/* - * Per-cpu stacks for handling critical, debug and machine check - * level interrupts. - */ -extern struct thread_info *critirq_ctx[NR_CPUS]; -extern struct thread_info *dbgirq_ctx[NR_CPUS]; -extern struct thread_info *mcheckirq_ctx[NR_CPUS]; -extern void exc_lvl_ctx_init(void); -#else -#define exc_lvl_ctx_init() -#endif - -#ifdef CONFIG_IRQSTACKS -/* - * Per-cpu stacks for handling hard and soft interrupts. - */ -extern struct thread_info *hardirq_ctx[NR_CPUS]; -extern struct thread_info *softirq_ctx[NR_CPUS]; - -extern void irq_ctx_init(void); -extern void call_do_softirq(struct thread_info *tp); -extern int call_handle_irq(int irq, void *p1, - struct thread_info *tp, void *func); -#else -#define irq_ctx_init() - -#endif /* CONFIG_IRQSTACKS */ - -extern void do_IRQ(struct pt_regs *regs); - -#endif /* _ASM_IRQ_H */ -#endif /* __KERNEL__ */ |