powerpc: Merge asm/irq.h

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

2 files changed, 117 insertions, 161 deletions

diff --git a/include/asm-ppc/irq.h b/include/asm-powerpc/irq.h
index 137ea0cf34d3..980393a16be2 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 99782afb4cde..000000000000
--- 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__ */