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authorPaul Mackerras <paulus@samba.org>2005-10-10 22:54:57 +1000
committerPaul Mackerras <paulus@samba.org>2005-10-10 22:54:57 +1000
commit1b92313d5ba993bb6e38a6205ccc64a7595cd0a6 (patch)
treee863dc92dc4959f5b4d9aaf3d2b490f16c1c9920
parent76f9f87fa51c9fb62c17986e2066ed467ac2da05 (diff)
powerpc: Merge asm/irq.h
Signed-off-by: Paul Mackerras <paulus@samba.org>
-rw-r--r--include/asm-powerpc/irq.h (renamed from include/asm-ppc/irq.h)158
-rw-r--r--include/asm-ppc64/irq.h120
2 files changed, 117 insertions, 161 deletions
diff --git a/include/asm-ppc/irq.h b/include/asm-powerpc/irq.h
index 137ea0cf34d..980393a16be 100644
--- a/include/asm-ppc/irq.h
+++ b/include/asm-powerpc/irq.h
@@ -1,11 +1,23 @@
#ifdef __KERNEL__
-#ifndef _ASM_IRQ_H
-#define _ASM_IRQ_H
+#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 <asm/machdep.h> /* ppc_md */
+#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
@@ -30,6 +42,44 @@
#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>
@@ -72,11 +122,6 @@
#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>
@@ -84,12 +129,6 @@ irq_canonicalize(int irq)
#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.
@@ -176,20 +215,9 @@ irq_canonicalize(int irq)
*/
#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)
@@ -313,17 +341,13 @@ static __inline__ int irq_canonicalize(int irq)
#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
+#define __DO_IRQ_CANON 1
#ifndef CONFIG_8260
@@ -400,25 +424,77 @@ static __inline__ int irq_canonicalize(int irq)
#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
+
/*
- * 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.
+ * 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_md.irq_canonicalize)
- return ppc_md.irq_canonicalize(irq);
+ if (ppc_do_canonicalize_irqs && irq == 2)
+ irq = 9;
return irq;
}
-#endif
+extern int distribute_irqs;
-#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;
+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__ */
diff --git a/include/asm-ppc64/irq.h b/include/asm-ppc64/irq.h
deleted file mode 100644
index 99782afb4cd..00000000000
--- a/include/asm-ppc64/irq.h
+++ /dev/null
@@ -1,120 +0,0 @@
-#ifdef __KERNEL__
-#ifndef _ASM_IRQ_H
-#define _ASM_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>
-
-/*
- * Maximum number of interrupt sources that we can handle.
- */
-#define NR_IRQS 512
-
-/* 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))
-
-/* 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);
-
-/*
- * 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;
-}
-
-static __inline__ int irq_canonicalize(int irq)
-{
- 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__ */