include/asm-ppc/irq.h - kernel/msm-4.19 - Gitiles

 #ifdef __KERNEL__
 #ifndef _ASM_IRQ_H
 #define _ASM_IRQ_H

 #include <linux/config.h>
 #include <asm/machdep.h>		/* ppc_md */
 #include <asm/atomic.h>

 /*
  * 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))

 #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
 static __inline__ int
 irq_canonicalize(int irq)
 {
 	return (irq);
 }

 #elif defined(CONFIG_44x)
 #include <asm/ibm44x.h>

 #define	NR_UIC_IRQS	32
 #define	NR_IRQS		((NR_UIC_IRQS * NR_UICS) + NR_BOARD_IRQS)

 static __inline__ int
 irq_canonicalize(int irq)
 {
 	return (irq);
 }

 #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)))

 /* always the same on 8xx -- Cort */
 static __inline__ int irq_canonicalize(int irq)
 {
 	return irq;
 }

 #elif defined(CONFIG_83xx)
 #include <asm/mpc83xx.h>

 static __inline__ int irq_canonicalize(int irq)
 {
 	return irq;
 }

 #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)

 static __inline__ int irq_canonicalize(int irq)
 {
 	return irq;
 }

 #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

 #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_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 */

 /*
  * This gets called from serial.c, which is now used on
  * powermacs as well as prep/chrp boxes.
  * Prep and chrp both have cascaded 8259 PICs.
  */
 static __inline__ int irq_canonicalize(int irq)
 {
 	if (ppc_md.irq_canonicalize)
 		return ppc_md.irq_canonicalize(irq);
 	return irq;
 }

 #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 unsigned long ppc_lost_interrupts[NR_MASK_WORDS];
 extern atomic_t ppc_n_lost_interrupts;

 #endif /* _ASM_IRQ_H */
 #endif /* __KERNEL__ */
	#ifdef __KERNEL__
	#ifndef _ASM_IRQ_H
	#define _ASM_IRQ_H

	#include <linux/config.h>
	#include <asm/machdep.h> /* ppc_md */
	#include <asm/atomic.h>

	/*
	* 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))

	#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
	static __inline__ int
	irq_canonicalize(int irq)
	{
	return (irq);
	}

	#elif defined(CONFIG_44x)
	#include <asm/ibm44x.h>

	#define NR_UIC_IRQS 32
	#define NR_IRQS ((NR_UIC_IRQS * NR_UICS) + NR_BOARD_IRQS)

	static __inline__ int
	irq_canonicalize(int irq)
	{
	return (irq);
	}

	#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)))

	/* always the same on 8xx -- Cort */
	static __inline__ int irq_canonicalize(int irq)
	{
	return irq;
	}

	#elif defined(CONFIG_83xx)
	#include <asm/mpc83xx.h>

	static __inline__ int irq_canonicalize(int irq)
	{
	return irq;
	}

	#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)

	static __inline__ int irq_canonicalize(int irq)
	{
	return irq;
	}

	#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

	#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_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 */

	/*
	* This gets called from serial.c, which is now used on
	* powermacs as well as prep/chrp boxes.
	* Prep and chrp both have cascaded 8259 PICs.
	*/
	static __inline__ int irq_canonicalize(int irq)
	{
	if (ppc_md.irq_canonicalize)
	return ppc_md.irq_canonicalize(irq);
	return irq;
	}

	#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 unsigned long ppc_lost_interrupts[NR_MASK_WORDS];
	extern atomic_t ppc_n_lost_interrupts;

	#endif /* _ASM_IRQ_H */
	#endif /* __KERNEL__ */