powerpc: Merge asm/irq.h

Signed-off-by: Paul Mackerras <paulus@samba.org>

1 files changed, 500 insertions, 0 deletions

diff --git a/include/asm-powerpc/irq.h b/include/asm-powerpc/irq.h
new file mode 100644
index 000000000000..980393a16be2
--- /dev/null
+++ b/include/asm-powerpc/irq.h
@@ -0,0 +1,500 @@
+#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_BPA_IIC    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_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 unsigned long ppc_lost_interrupts[NR_MASK_WORDS];
+extern atomic_t ppc_n_lost_interrupts;
+
+#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_handle_IRQ_event(int irq, struct pt_regs *regs,
+                        struct irqaction *action, struct thread_info *tp);
+
+#define __ARCH_HAS_DO_SOFTIRQ
+
+#else
+#define irq_ctx_init()
+
+#endif /* CONFIG_IRQSTACKS */
+
+#endif /* _ASM_IRQ_H */
+#endif /* __KERNEL__ */