h8300: IRQ handling update
Yoshinori Sato [Sat, 23 Feb 2008 23:23:59 +0000 (15:23 -0800)]
- add missing file and declare.
- remove unused file and macros.
- some cleanup.

Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

arch/h8300/kernel/irq.c
arch/h8300/platform/h8300h/Makefile
arch/h8300/platform/h8300h/irq.c [new file with mode: 0644]
arch/h8300/platform/h8s/ints.c [deleted file]
arch/h8300/platform/h8s/irq.c [moved from arch/h8300/platform/h8s/ints_h8s.c with 95% similarity]
include/asm-h8300/hardirq.h
include/asm-h8300/irq.h

index 5a1b4cf..ef4f004 100644 (file)
@@ -26,7 +26,7 @@
 
 extern unsigned long *interrupt_redirect_table;
 extern const int h8300_saved_vectors[];
-extern const unsigned long h8300_trap_table[];
+extern const h8300_vector h8300_trap_table[];
 int h8300_enable_irq_pin(unsigned int irq);
 void h8300_disable_irq_pin(unsigned int irq);
 
@@ -116,7 +116,7 @@ static void __init setup_vector(void)
 {
        int i;
        unsigned long *ramvec,*ramvec_p;
-       const unsigned long *trap_entry;
+       const h8300_vector *trap_entry;
        const int *saved_vector;
 
        ramvec = get_vector_address();
index c509636..420f73b 100644 (file)
@@ -4,4 +4,4 @@
 # Reuse any files we can from the H8/300H
 #
 
-obj-y := irq_pin.o ptrace_h8300h.o
+obj-y := irq.o ptrace_h8300h.o
diff --git a/arch/h8300/platform/h8300h/irq.c b/arch/h8300/platform/h8300h/irq.c
new file mode 100644 (file)
index 0000000..e977345
--- /dev/null
@@ -0,0 +1,82 @@
+/*
+ * Interrupt handling H8/300H depend.
+ * Yoshinori Sato <ysato@users.sourceforge.jp>
+ *
+ */
+
+#include <linux/init.h>
+#include <linux/errno.h>
+
+#include <asm/ptrace.h>
+#include <asm/traps.h>
+#include <asm/irq.h>
+#include <asm/io.h>
+#include <asm/gpio.h>
+#include <asm/regs306x.h>
+
+const int __initdata h8300_saved_vectors[] = {
+#if defined(CONFIG_GDB_DEBUG)
+       TRAP3_VEC,      /* TRAPA #3 is GDB breakpoint */
+#endif
+       -1,
+};
+
+const h8300_vector __initdata h8300_trap_table[] = {
+       0, 0, 0, 0, 0, 0, 0, 0,
+       system_call,
+       0,
+       0,
+       trace_break,
+};
+
+int h8300_enable_irq_pin(unsigned int irq)
+{
+       int bitmask;
+       if (irq < EXT_IRQ0 || irq > EXT_IRQ5)
+               return 0;
+
+       /* initialize IRQ pin */
+       bitmask = 1 << (irq - EXT_IRQ0);
+       switch(irq) {
+       case EXT_IRQ0:
+       case EXT_IRQ1:
+       case EXT_IRQ2:
+       case EXT_IRQ3:
+               if (H8300_GPIO_RESERVE(H8300_GPIO_P8, bitmask) == 0)
+                       return -EBUSY;
+               H8300_GPIO_DDR(H8300_GPIO_P8, bitmask, H8300_GPIO_INPUT);
+               break;
+       case EXT_IRQ4:
+       case EXT_IRQ5:
+               if (H8300_GPIO_RESERVE(H8300_GPIO_P9, bitmask) == 0)
+                       return -EBUSY;
+               H8300_GPIO_DDR(H8300_GPIO_P9, bitmask, H8300_GPIO_INPUT);
+               break;
+       }
+
+       return 0;
+}
+
+void h8300_disable_irq_pin(unsigned int irq)
+{
+       int bitmask;
+       if (irq < EXT_IRQ0 || irq > EXT_IRQ5)
+               return;
+
+       /* disable interrupt & release IRQ pin */
+       bitmask = 1 << (irq - EXT_IRQ0);
+       switch(irq) {
+       case EXT_IRQ0:
+       case EXT_IRQ1:
+       case EXT_IRQ2:
+       case EXT_IRQ3:
+               *(volatile unsigned char *)IER &= ~bitmask;
+               H8300_GPIO_FREE(H8300_GPIO_P8, bitmask);
+               break ;
+       case EXT_IRQ4:
+       case EXT_IRQ5:
+               *(volatile unsigned char *)IER &= ~bitmask;
+               H8300_GPIO_FREE(H8300_GPIO_P9, bitmask);
+               break;
+       }
+}
diff --git a/arch/h8300/platform/h8s/ints.c b/arch/h8300/platform/h8s/ints.c
deleted file mode 100644 (file)
index ac10b97..0000000
+++ /dev/null
@@ -1,304 +0,0 @@
-/*
- * linux/arch/h8300/platform/h8s/ints.c
- *
- * Yoshinori Sato <ysato@users.sourceforge.jp>
- *
- * Based on linux/arch/$(ARCH)/platform/$(PLATFORM)/ints.c
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file COPYING in the main directory of this archive
- * for more details.
- *
- * Copyright 1996 Roman Zippel
- * Copyright 1999 D. Jeff Dionne <jeff@rt-control.com>
- */
-
-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/kernel_stat.h>
-#include <linux/seq_file.h>
-#include <linux/init.h>
-#include <linux/interrupt.h>
-#include <linux/bootmem.h>
-#include <linux/random.h>
-#include <linux/hardirq.h>
-
-#include <asm/system.h>
-#include <asm/irq.h>
-#include <asm/traps.h>
-#include <asm/io.h>
-#include <asm/setup.h>
-#include <asm/gpio.h>
-#include <asm/regs267x.h>
-#include <asm/errno.h>
-
-/*
- * This structure has only 4 elements for speed reasons
- */
-typedef struct irq_handler {
-       irqreturn_t (*handler)(int, void *, struct pt_regs *);
-       int         flags;
-       int         count;
-       void        *dev_id;
-       const char  *devname;
-} irq_handler_t;
-
-static irq_handler_t *irq_list[NR_IRQS];
-
-/* IRQ pin assignment */
-struct irq_pins {
-       unsigned char port_no;
-       unsigned char bit_no;
-};
-/* ISTR = 0 */
-static const struct irq_pins irq_assign_table0[16]={
-        {H8300_GPIO_P5,H8300_GPIO_B0},{H8300_GPIO_P5,H8300_GPIO_B1},
-       {H8300_GPIO_P5,H8300_GPIO_B2},{H8300_GPIO_P5,H8300_GPIO_B3},
-       {H8300_GPIO_P5,H8300_GPIO_B4},{H8300_GPIO_P5,H8300_GPIO_B5},
-       {H8300_GPIO_P5,H8300_GPIO_B6},{H8300_GPIO_P5,H8300_GPIO_B7},
-       {H8300_GPIO_P6,H8300_GPIO_B0},{H8300_GPIO_P6,H8300_GPIO_B1},
-       {H8300_GPIO_P6,H8300_GPIO_B2},{H8300_GPIO_P6,H8300_GPIO_B3},
-       {H8300_GPIO_P6,H8300_GPIO_B4},{H8300_GPIO_P6,H8300_GPIO_B5},
-       {H8300_GPIO_PF,H8300_GPIO_B1},{H8300_GPIO_PF,H8300_GPIO_B2},
-};
-/* ISTR = 1 */
-static const struct irq_pins irq_assign_table1[16]={
-       {H8300_GPIO_P8,H8300_GPIO_B0},{H8300_GPIO_P8,H8300_GPIO_B1},
-       {H8300_GPIO_P8,H8300_GPIO_B2},{H8300_GPIO_P8,H8300_GPIO_B3},
-       {H8300_GPIO_P8,H8300_GPIO_B4},{H8300_GPIO_P8,H8300_GPIO_B5},
-       {H8300_GPIO_PH,H8300_GPIO_B2},{H8300_GPIO_PH,H8300_GPIO_B3},
-       {H8300_GPIO_P2,H8300_GPIO_B0},{H8300_GPIO_P2,H8300_GPIO_B1},
-       {H8300_GPIO_P2,H8300_GPIO_B2},{H8300_GPIO_P2,H8300_GPIO_B3},
-       {H8300_GPIO_P2,H8300_GPIO_B4},{H8300_GPIO_P2,H8300_GPIO_B5},
-       {H8300_GPIO_P2,H8300_GPIO_B6},{H8300_GPIO_P2,H8300_GPIO_B7},
-};
-
-static short use_kmalloc = 0;
-
-extern unsigned long *interrupt_redirect_table;
-
-#define CPU_VECTOR ((unsigned long *)0x000000)
-#define ADDR_MASK (0xffffff)
-
-static inline unsigned long *get_vector_address(void)
-{
-       volatile unsigned long *rom_vector = CPU_VECTOR;
-       unsigned long base,tmp;
-       int vec_no;
-
-       base = rom_vector[EXT_IRQ0] & ADDR_MASK;
-       
-       /* check romvector format */
-       for (vec_no = EXT_IRQ1; vec_no <= EXT_IRQ15; vec_no++) {
-               if ((base+(vec_no - EXT_IRQ0)*4) != (rom_vector[vec_no] & ADDR_MASK))
-                       return NULL;
-       }
-
-       /* ramvector base address */
-       base -= EXT_IRQ0*4;
-
-       /* writerble check */
-       tmp = ~(*(unsigned long *)base);
-       (*(unsigned long *)base) = tmp;
-       if ((*(unsigned long *)base) != tmp)
-               return NULL;
-       return (unsigned long *)base;
-}
-
-void __init init_IRQ(void)
-{
-#if defined(CONFIG_RAMKERNEL)
-       int i;
-       unsigned long *ramvec,*ramvec_p;
-       unsigned long break_vec;
-
-       ramvec = get_vector_address();
-       if (ramvec == NULL)
-               panic("interrupt vector serup failed.");
-       else
-               printk("virtual vector at 0x%08lx\n",(unsigned long)ramvec);
-
-#if defined(CONFIG_GDB_DEBUG)
-       /* save original break vector */
-       break_vec = ramvec[TRAP3_VEC];
-#else
-       break_vec = VECTOR(trace_break);
-#endif
-
-       /* create redirect table */
-       for (ramvec_p = ramvec, i = 0; i < NR_IRQS; i++)
-               *ramvec_p++ = REDIRECT(interrupt_entry);
-
-       /* set special vector */
-       ramvec[TRAP0_VEC] = VECTOR(system_call);
-       ramvec[TRAP3_VEC] = break_vec;
-       interrupt_redirect_table = ramvec;
-#ifdef DUMP_VECTOR
-       ramvec_p = ramvec;
-       for (i = 0; i < NR_IRQS; i++) {
-               if ((i % 8) == 0)
-                       printk("\n%p: ",ramvec_p);
-               printk("%p ",*ramvec_p);
-               ramvec_p++;
-       }
-       printk("\n");
-#endif
-#endif
-}
-
-int request_irq(unsigned int irq,
-               irqreturn_t (*handler)(int, void *, struct pt_regs *),
-                unsigned long flags, const char *devname, void *dev_id)
-{
-       unsigned short ptn = 1 << (irq - EXT_IRQ0);
-       irq_handler_t *irq_handle;
-       if (irq < 0 || irq >= NR_IRQS) {
-               printk("Incorrect IRQ %d from %s\n", irq, devname);
-               return -EINVAL;
-       }
-       if (irq_list[irq])
-               return -EBUSY; /* already used */
-       if (irq >= EXT_IRQ0 && irq <= EXT_IRQ15) {
-               /* initialize IRQ pin */
-               unsigned int port_no,bit_no;
-               if (*(volatile unsigned short *)ITSR & ptn) {
-                       port_no = irq_assign_table1[irq - EXT_IRQ0].port_no;
-                       bit_no = irq_assign_table1[irq - EXT_IRQ0].bit_no;
-               } else {
-                       port_no = irq_assign_table0[irq - EXT_IRQ0].port_no;
-                       bit_no = irq_assign_table0[irq - EXT_IRQ0].bit_no;
-               }
-               if (H8300_GPIO_RESERVE(port_no, bit_no) == 0)
-                       return -EBUSY;                   /* pin already use */
-               H8300_GPIO_DDR(port_no, bit_no, H8300_GPIO_INPUT);
-               *(volatile unsigned short *)ISR &= ~ptn; /* ISR clear */
-       }               
-
-       if (use_kmalloc)
-               irq_handle = kmalloc(sizeof(irq_handler_t), GFP_ATOMIC);
-       else {
-               /* use bootmem allocator */
-               irq_handle = (irq_handler_t *)alloc_bootmem(sizeof(irq_handler_t));
-               irq_handle = (irq_handler_t *)((unsigned long)irq_handle | 0x80000000);
-       }
-
-       if (irq_handle == NULL)
-               return -ENOMEM;
-
-       irq_handle->handler = handler;
-       irq_handle->flags   = flags;
-       irq_handle->count   = 0;
-       irq_handle->dev_id  = dev_id;
-       irq_handle->devname = devname;
-       irq_list[irq] = irq_handle;
-       if (irq_handle->flags & IRQF_SAMPLE_RANDOM)
-               rand_initialize_irq(irq);
-       
-       /* enable interrupt */
-       /* compatible i386  */
-       if (irq >= EXT_IRQ0 && irq <= EXT_IRQ15)
-               *(volatile unsigned short *)IER |= ptn;
-       return 0;
-}
-
-EXPORT_SYMBOL(request_irq);
-
-void free_irq(unsigned int irq, void *dev_id)
-{
-       if (irq >= NR_IRQS)
-               return;
-       if (irq_list[irq]->dev_id != dev_id)
-               printk("%s: Removing probably wrong IRQ %d from %s\n",
-                      __FUNCTION__, irq, irq_list[irq]->devname);
-       if (irq >= EXT_IRQ0 && irq <= EXT_IRQ15) {
-               /* disable interrupt & release IRQ pin */
-               unsigned short port_no,bit_no;
-               *(volatile unsigned short *)ISR &= ~(1 << (irq - EXT_IRQ0));
-               *(volatile unsigned short *)IER |= 1 << (irq - EXT_IRQ0);
-               if (*(volatile unsigned short *)ITSR & (1 << (irq - EXT_IRQ0))) {
-                       port_no = irq_assign_table1[irq - EXT_IRQ0].port_no;
-                       bit_no = irq_assign_table1[irq - EXT_IRQ0].bit_no;
-               } else {
-                       port_no = irq_assign_table0[irq - EXT_IRQ0].port_no;
-                       bit_no = irq_assign_table0[irq - EXT_IRQ0].bit_no;
-               }
-               H8300_GPIO_FREE(port_no, bit_no);
-       }
-       if (((unsigned long)irq_list[irq] & 0x80000000) == 0) {
-               kfree(irq_list[irq]);
-               irq_list[irq] = NULL;
-       }
-}
-
-EXPORT_SYMBOL(free_irq);
-
-unsigned long probe_irq_on (void)
-{
-       return 0;
-}
-
-EXPORT_SYMBOL(probe_irq_on);
-
-int probe_irq_off (unsigned long irqs)
-{
-       return 0;
-}
-
-EXPORT_SYMBOL(probe_irq_off);
-
-void enable_irq(unsigned int irq)
-{
-       if (irq >= EXT_IRQ0 && irq <= EXT_IRQ15)
-               *(volatile unsigned short *)IER |= 1 << (irq - EXT_IRQ0);
-}
-
-void disable_irq(unsigned int irq)
-{
-       if (irq >= EXT_IRQ0 && irq <= EXT_IRQ15)
-               *(volatile unsigned short *)IER &= ~(1 << (irq - EXT_IRQ0));
-}
-
-asmlinkage void process_int(unsigned long vec, struct pt_regs *fp)
-{
-       irq_enter();
-       /* ISR clear       */
-       /* compatible i386 */
-       if (vec >= EXT_IRQ0 && vec <= EXT_IRQ15)
-               *(volatile unsigned short *)ISR &= ~(1 << (vec - EXT_IRQ0));
-       if (vec < NR_IRQS) {
-               if (irq_list[vec]) {
-                       irq_list[vec]->handler(vec, irq_list[vec]->dev_id, fp);
-                       irq_list[vec]->count++;
-                       if (irq_list[vec]->flags & IRQF_SAMPLE_RANDOM)
-                               add_interrupt_randomness(vec);
-               }
-       } else {
-               BUG();
-       }
-       irq_exit();
-}
-
-int show_interrupts(struct seq_file *p, void *v)
-{
-       int i = *(loff_t *) v;
-
-       if ((i < NR_IRQS) && (irq_list[i] !=NULL)) {
-               seq_printf(p, "%3d: %10u ",i,irq_list[i]->count);
-               seq_printf(p, "%s\n", irq_list[i]->devname);
-       }
-
-       return 0;
-}
-
-void init_irq_proc(void)
-{
-}
-
-static int __init enable_kmalloc(void)
-{
-       use_kmalloc = 1;
-       return 0;
-}
-core_initcall(enable_kmalloc);
similarity index 95%
rename from arch/h8300/platform/h8s/ints_h8s.c
rename to arch/h8300/platform/h8s/irq.c
index faa8a45..8182f04 100644 (file)
@@ -27,11 +27,11 @@ const int __initdata h8300_saved_vectors[]={
 };
 
 /* trap entry table */
-const unsigned long __initdata h8300_trap_table[NR_TRAPS]={
+const H8300_VECTOR __initdata h8300_trap_table[] = {
        0,0,0,0,0,
-       (unsigned long)trace_break,  /* TRACE */
+       trace_break,  /* TRACE */
        0,0,
-       (unsigned long)system_call,  /* TRAPA #0 */
+       system_call,  /* TRAPA #0 */
        0,0,0,0,0,0,0
 };
 
@@ -50,7 +50,7 @@ static const struct irq_pins irq_assign_table0[16]={
        {H8300_GPIO_P6,H8300_GPIO_B2},{H8300_GPIO_P6,H8300_GPIO_B3},
        {H8300_GPIO_P6,H8300_GPIO_B4},{H8300_GPIO_P6,H8300_GPIO_B5},
        {H8300_GPIO_PF,H8300_GPIO_B1},{H8300_GPIO_PF,H8300_GPIO_B2},
-}; 
+};
 /* ISTR = 1 */
 static const struct irq_pins irq_assign_table1[16]={
        {H8300_GPIO_P8,H8300_GPIO_B0},{H8300_GPIO_P8,H8300_GPIO_B1},
index 18fa793..9d7f7a7 100644 (file)
@@ -12,6 +12,8 @@ typedef struct {
 
 #include <linux/irq_cpustat.h> /* Standard mappings for irq_cpustat_t above */
 
+extern void ack_bad_irq(unsigned int irq);
+
 #define HARDIRQ_BITS   8
 
 /*
index 56eec28..13d7c60 100644 (file)
@@ -3,7 +3,7 @@
 
 #include <asm/ptrace.h>
 
-#if defined(__H8300H__)
+#if defined(CONFIG_CPU_H8300H)
 #define NR_IRQS 64
 #define EXT_IRQ0 12
 #define EXT_IRQ1 13
 #define EXT_IRQ6 18
 #define EXT_IRQ7 19
 #define EXT_IRQS 5
-
-#include <asm/regs306x.h>
-#define h8300_clear_isr(irq)                                                \
-do {                                                                        \
-       if (irq >= EXT_IRQ0 && irq <= EXT_IRQ5)                             \
-               *(volatile unsigned char *)ISR &= ~(1 << (irq - EXT_IRQ0)); \
-} while(0)
-
 #define IER_REGS *(volatile unsigned char *)IER
 #endif
 #if defined(CONFIG_CPU_H8S)
@@ -44,13 +36,6 @@ do {                                                                        \
 #define EXT_IRQ15 31
 #define EXT_IRQS 15
 
-#include <asm/regs267x.h>
-#define h8300_clear_isr(irq)                                                 \
-do {                                                                         \
-       if (irq >= EXT_IRQ0 && irq <= EXT_IRQ15)                             \
-               *(volatile unsigned short *)ISR &= ~(1 << (irq - EXT_IRQ0)); \
-} while(0)
-
 #define IER_REGS *(volatile unsigned short *)IER
 #endif
 
@@ -59,4 +44,6 @@ static __inline__ int irq_canonicalize(int irq)
        return irq;
 }
 
+typedef void (*h8300_vector)(void);
+
 #endif /* _H8300_IRQ_H_ */