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linux/include/asm-powerpc/irq.h
Kumar Gala 7f7fda04a6 [PATCH] ppc32: fix PQ2 PCI DMA interrupt handling 
The bit position in the status register corresponding to the
PCI DMA interrupt was incorrect.  Additionally, we did not
have a define for the PCI DMA interrupt.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-11 22:19:56 +11:00

505 lines
16 KiB
C
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#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/config.h>
#include <linux/threads.h>
#include <asm/types.h>
#include <asm/atomic.h>
/* this number is used when no interrupt has been assigned */
#define NO_IRQ (-1)
/*
* 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 */
/*
* IRQ line status macro IRQ_PER_CPU is used
*/
#define ARCH_HAS_IRQ_PER_CPU
#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))
#ifdef CONFIG_PPC64
/*
* Maximum number of interrupt sources that we can handle.
*/
#define NR_IRQS 512
/* Interrupt numbers are virtual in case they are sparsely
* distributed by the hardware.
*/
extern unsigned int virt_irq_to_real_map[NR_IRQS];
/* Create a mapping for a real_irq if it doesn't already exist.
* Return the virtual irq as a convenience.
*/
int virt_irq_create_mapping(unsigned int real_irq);
void virt_irq_init(void);
static inline unsigned int virt_irq_to_real(unsigned int virt_irq)
{
return virt_irq_to_real_map[virt_irq];
}
extern unsigned int real_irq_to_virt_slowpath(unsigned int real_irq);
/*
* List of interrupt controllers.
*/
#define IC_INVALID 0
#define IC_OPEN_PIC 1
#define IC_PPC_XIC 2
#define IC_CELL_PIC 3
#define IC_ISERIES 4
extern u64 ppc64_interrupt_controller;
#else /* 32-bit */
#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)))
#elif defined(CONFIG_83xx)
#include <asm/mpc83xx.h>
#define NR_IRQS (NR_IPIC_INTS)
#elif defined(CONFIG_85xx)
/* Now include the board configuration specific associations.
*/
#include <asm/mpc85xx.h>
/* The MPC8548 openpic has 48 internal interrupts and 12 external
* interrupts.
*
* We are "flattening" the interrupt vectors of the cascaded CPM
* so that we can uniquely identify any interrupt source with a
* single integer.
*/
#define NR_CPM_INTS 64
#define NR_EPIC_INTS 60
#ifndef NR_8259_INTS
#define NR_8259_INTS 0
#endif
#define NUM_8259_INTERRUPTS NR_8259_INTS
#ifndef CPM_IRQ_OFFSET
#define CPM_IRQ_OFFSET 0
#endif
#define NR_IRQS (NR_EPIC_INTS + NR_CPM_INTS + NR_8259_INTS)
/* Internal IRQs on MPC85xx OpenPIC */
#ifndef MPC85xx_OPENPIC_IRQ_OFFSET
#ifdef CONFIG_CPM2
#define MPC85xx_OPENPIC_IRQ_OFFSET (CPM_IRQ_OFFSET + NR_CPM_INTS)
#else
#define MPC85xx_OPENPIC_IRQ_OFFSET 0
#endif
#endif
/* Not all of these exist on all MPC85xx implementations */
#define MPC85xx_IRQ_L2CACHE ( 0 + MPC85xx_OPENPIC_IRQ_OFFSET)
#define MPC85xx_IRQ_ECM ( 1 + MPC85xx_OPENPIC_IRQ_OFFSET)
#define MPC85xx_IRQ_DDR ( 2 + MPC85xx_OPENPIC_IRQ_OFFSET)
#define MPC85xx_IRQ_LBIU ( 3 + MPC85xx_OPENPIC_IRQ_OFFSET)
#define MPC85xx_IRQ_DMA0 ( 4 + MPC85xx_OPENPIC_IRQ_OFFSET)
#define MPC85xx_IRQ_DMA1 ( 5 + MPC85xx_OPENPIC_IRQ_OFFSET)
#define MPC85xx_IRQ_DMA2 ( 6 + MPC85xx_OPENPIC_IRQ_OFFSET)
#define MPC85xx_IRQ_DMA3 ( 7 + MPC85xx_OPENPIC_IRQ_OFFSET)
#define MPC85xx_IRQ_PCI1 ( 8 + MPC85xx_OPENPIC_IRQ_OFFSET)
#define MPC85xx_IRQ_PCI2 ( 9 + MPC85xx_OPENPIC_IRQ_OFFSET)
#define MPC85xx_IRQ_RIO_ERROR ( 9 + MPC85xx_OPENPIC_IRQ_OFFSET)
#define MPC85xx_IRQ_RIO_BELL (10 + MPC85xx_OPENPIC_IRQ_OFFSET)
#define MPC85xx_IRQ_RIO_TX (11 + MPC85xx_OPENPIC_IRQ_OFFSET)
#define MPC85xx_IRQ_RIO_RX (12 + MPC85xx_OPENPIC_IRQ_OFFSET)
#define MPC85xx_IRQ_TSEC1_TX (13 + MPC85xx_OPENPIC_IRQ_OFFSET)
#define MPC85xx_IRQ_TSEC1_RX (14 + MPC85xx_OPENPIC_IRQ_OFFSET)
#define MPC85xx_IRQ_TSEC3_TX (15 + MPC85xx_OPENPIC_IRQ_OFFSET)
#define MPC85xx_IRQ_TSEC3_RX (16 + MPC85xx_OPENPIC_IRQ_OFFSET)
#define MPC85xx_IRQ_TSEC3_ERROR (17 + MPC85xx_OPENPIC_IRQ_OFFSET)
#define MPC85xx_IRQ_TSEC1_ERROR (18 + MPC85xx_OPENPIC_IRQ_OFFSET)
#define MPC85xx_IRQ_TSEC2_TX (19 + MPC85xx_OPENPIC_IRQ_OFFSET)
#define MPC85xx_IRQ_TSEC2_RX (20 + MPC85xx_OPENPIC_IRQ_OFFSET)
#define MPC85xx_IRQ_TSEC4_TX (21 + MPC85xx_OPENPIC_IRQ_OFFSET)
#define MPC85xx_IRQ_TSEC4_RX (22 + MPC85xx_OPENPIC_IRQ_OFFSET)
#define MPC85xx_IRQ_TSEC4_ERROR (23 + MPC85xx_OPENPIC_IRQ_OFFSET)
#define MPC85xx_IRQ_TSEC2_ERROR (24 + MPC85xx_OPENPIC_IRQ_OFFSET)
#define MPC85xx_IRQ_FEC (25 + MPC85xx_OPENPIC_IRQ_OFFSET)
#define MPC85xx_IRQ_DUART (26 + MPC85xx_OPENPIC_IRQ_OFFSET)
#define MPC85xx_IRQ_IIC1 (27 + MPC85xx_OPENPIC_IRQ_OFFSET)
#define MPC85xx_IRQ_PERFMON (28 + MPC85xx_OPENPIC_IRQ_OFFSET)
#define MPC85xx_IRQ_SEC2 (29 + MPC85xx_OPENPIC_IRQ_OFFSET)
#define MPC85xx_IRQ_CPM (30 + MPC85xx_OPENPIC_IRQ_OFFSET)
/* The 12 external interrupt lines */
#define MPC85xx_IRQ_EXT0 (48 + MPC85xx_OPENPIC_IRQ_OFFSET)
#define MPC85xx_IRQ_EXT1 (49 + MPC85xx_OPENPIC_IRQ_OFFSET)
#define MPC85xx_IRQ_EXT2 (50 + MPC85xx_OPENPIC_IRQ_OFFSET)
#define MPC85xx_IRQ_EXT3 (51 + MPC85xx_OPENPIC_IRQ_OFFSET)
#define MPC85xx_IRQ_EXT4 (52 + MPC85xx_OPENPIC_IRQ_OFFSET)
#define MPC85xx_IRQ_EXT5 (53 + MPC85xx_OPENPIC_IRQ_OFFSET)
#define MPC85xx_IRQ_EXT6 (54 + MPC85xx_OPENPIC_IRQ_OFFSET)
#define MPC85xx_IRQ_EXT7 (55 + MPC85xx_OPENPIC_IRQ_OFFSET)
#define MPC85xx_IRQ_EXT8 (56 + MPC85xx_OPENPIC_IRQ_OFFSET)
#define MPC85xx_IRQ_EXT9 (57 + MPC85xx_OPENPIC_IRQ_OFFSET)
#define MPC85xx_IRQ_EXT10 (58 + MPC85xx_OPENPIC_IRQ_OFFSET)
#define MPC85xx_IRQ_EXT11 (59 + MPC85xx_OPENPIC_IRQ_OFFSET)
/* CPM related interrupts */
#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_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_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)
#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
#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];
extern atomic_t ppc_n_lost_interrupts;
#define virt_irq_create_mapping(x) (x)
#endif
/*
* 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;
}
extern int distribute_irqs;
struct irqaction;
struct pt_regs;
#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___do_IRQ(int irq, struct pt_regs *regs,
struct thread_info *tp);
#define __ARCH_HAS_DO_SOFTIRQ
#else
#define irq_ctx_init()
#endif /* CONFIG_IRQSTACKS */
extern void do_IRQ(struct pt_regs *regs);
#endif /* _ASM_IRQ_H */
#endif /* __KERNEL__ */
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