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author | Roman Zippel <zippel@linux-m68k.org> | 2006-06-25 05:47:03 -0700 |
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committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-06-25 10:00:57 -0700 |
commit | 35353bb8b869f3a0a153d0674cdafbe4f64aaa05 (patch) | |
tree | 26b9c36b3ad1d03c810c13bb81e159bdbe782b9f /arch | |
parent | 734085651c9b80aa3f9e6027b156102de214a0b2 (diff) | |
download | linux-35353bb8b869f3a0a153d0674cdafbe4f64aaa05.tar.gz linux-35353bb8b869f3a0a153d0674cdafbe4f64aaa05.tar.bz2 linux-35353bb8b869f3a0a153d0674cdafbe4f64aaa05.zip |
[PATCH] m68k: convert hp300 irq code
Signed-off-by: Roman Zippel <zippel@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch')
-rw-r--r-- | arch/m68k/hp300/Makefile | 2 | ||||
-rw-r--r-- | arch/m68k/hp300/config.c | 11 | ||||
-rw-r--r-- | arch/m68k/hp300/ints.c | 175 | ||||
-rw-r--r-- | arch/m68k/hp300/ints.h | 9 | ||||
-rw-r--r-- | arch/m68k/hp300/time.c | 3 |
5 files changed, 6 insertions, 194 deletions
diff --git a/arch/m68k/hp300/Makefile b/arch/m68k/hp300/Makefile index 89b6317899e3..288b9c67c9bf 100644 --- a/arch/m68k/hp300/Makefile +++ b/arch/m68k/hp300/Makefile @@ -2,4 +2,4 @@ # Makefile for Linux arch/m68k/hp300 source directory # -obj-y := ksyms.o config.o ints.o time.o reboot.o +obj-y := ksyms.o config.o time.o reboot.o diff --git a/arch/m68k/hp300/config.c b/arch/m68k/hp300/config.c index 6d129eef370f..2ef271cd818b 100644 --- a/arch/m68k/hp300/config.c +++ b/arch/m68k/hp300/config.c @@ -21,7 +21,6 @@ #include <asm/hp300hw.h> #include <asm/rtc.h> -#include "ints.h" #include "time.h" unsigned long hp300_model; @@ -64,8 +63,6 @@ static char *hp300_models[] __initdata = { static char hp300_model_name[13] = "HP9000/"; extern void hp300_reset(void); -extern irqreturn_t (*hp300_default_handler[])(int, void *, struct pt_regs *); -extern int show_hp300_interrupts(struct seq_file *, void *); #ifdef CONFIG_SERIAL_8250_CONSOLE extern int hp300_setup_serial_console(void) __init; #endif @@ -245,16 +242,16 @@ static unsigned int hp300_get_ss(void) hp300_rtc_read(RTC_REG_SEC2); } +static void __init hp300_init_IRQ(void) +{ +} + void __init config_hp300(void) { mach_sched_init = hp300_sched_init; mach_init_IRQ = hp300_init_IRQ; - mach_request_irq = hp300_request_irq; - mach_free_irq = hp300_free_irq; mach_get_model = hp300_get_model; - mach_get_irq_list = show_hp300_interrupts; mach_gettimeoffset = hp300_gettimeoffset; - mach_default_handler = &hp300_default_handler; mach_hwclk = hp300_hwclk; mach_get_ss = hp300_get_ss; mach_reset = hp300_reset; diff --git a/arch/m68k/hp300/ints.c b/arch/m68k/hp300/ints.c deleted file mode 100644 index 0c5bb403e893..000000000000 --- a/arch/m68k/hp300/ints.c +++ /dev/null @@ -1,175 +0,0 @@ -/* - * linux/arch/m68k/hp300/ints.c - * - * Copyright (C) 1998 Philip Blundell <philb@gnu.org> - * - * This file contains the HP300-specific interrupt handling. - * We only use the autovector interrupts, and therefore we need to - * maintain lists of devices sharing each ipl. - * [ipl list code added by Peter Maydell <pmaydell@chiark.greenend.org.uk> 06/1998] - */ - -#include <linux/kernel.h> -#include <linux/types.h> -#include <linux/init.h> -#include <linux/sched.h> -#include <linux/kernel_stat.h> -#include <linux/interrupt.h> -#include <linux/spinlock.h> -#include <asm/machdep.h> -#include <asm/irq.h> -#include <asm/io.h> -#include <asm/system.h> -#include <asm/traps.h> -#include <asm/ptrace.h> -#include <asm/errno.h> -#include "ints.h" - -/* Each ipl has a linked list of interrupt service routines. - * Service routines are added via hp300_request_irq() and removed - * via hp300_free_irq(). The device driver should set IRQ_FLG_FAST - * if it needs to be serviced early (eg FIFOless UARTs); this will - * cause it to be added at the front of the queue rather than - * the back. - * Currently IRQ_FLG_SLOW and flags=0 are treated identically; if - * we needed three levels of priority we could distinguish them - * but this strikes me as mildly ugly... - */ - -/* we start with no entries in any list */ -static irq_node_t *hp300_irq_list[HP300_NUM_IRQS]; - -static spinlock_t irqlist_lock; - -/* This handler receives all interrupts, dispatching them to the registered handlers */ -static irqreturn_t hp300_int_handler(int irq, void *dev_id, struct pt_regs *fp) -{ - irq_node_t *t; - /* We just give every handler on the chain an opportunity to handle - * the interrupt, in priority order. - */ - for(t = hp300_irq_list[irq]; t; t=t->next) - t->handler(irq, t->dev_id, fp); - /* We could put in some accounting routines, checks for stray interrupts, - * etc, in here. Note that currently we can't tell whether or not - * a handler handles the interrupt, though. - */ - return IRQ_HANDLED; -} - -static irqreturn_t hp300_badint(int irq, void *dev_id, struct pt_regs *fp) -{ - num_spurious += 1; - return IRQ_NONE; -} - -irqreturn_t (*hp300_default_handler[SYS_IRQS])(int, void *, struct pt_regs *) = { - [0] = hp300_badint, - [1] = hp300_int_handler, - [2] = hp300_int_handler, - [3] = hp300_int_handler, - [4] = hp300_int_handler, - [5] = hp300_int_handler, - [6] = hp300_int_handler, - [7] = hp300_int_handler -}; - -/* dev_id had better be unique to each handler because it's the only way we have - * to distinguish handlers when removing them... - * - * It would be pretty easy to support IRQ_FLG_LOCK (handler is not replacable) - * and IRQ_FLG_REPLACE (handler replaces existing one with this dev_id) - * if we wanted to. IRQ_FLG_FAST is needed for devices where interrupt latency - * matters (eg the dreaded FIFOless UART...) - */ -int hp300_request_irq(unsigned int irq, - irqreturn_t (*handler) (int, void *, struct pt_regs *), - unsigned long flags, const char *devname, void *dev_id) -{ - irq_node_t *t, *n = new_irq_node(); - - if (!n) /* oops, no free nodes */ - return -ENOMEM; - - spin_lock_irqsave(&irqlist_lock, flags); - - if (!hp300_irq_list[irq]) { - /* no list yet */ - hp300_irq_list[irq] = n; - n->next = NULL; - } else if (flags & IRQ_FLG_FAST) { - /* insert at head of list */ - n->next = hp300_irq_list[irq]; - hp300_irq_list[irq] = n; - } else { - /* insert at end of list */ - for(t = hp300_irq_list[irq]; t->next; t = t->next) - /* do nothing */; - n->next = NULL; - t->next = n; - } - - /* Fill in n appropriately */ - n->handler = handler; - n->flags = flags; - n->dev_id = dev_id; - n->devname = devname; - spin_unlock_irqrestore(&irqlist_lock, flags); - return 0; -} - -void hp300_free_irq(unsigned int irq, void *dev_id) -{ - irq_node_t *t; - unsigned long flags; - - spin_lock_irqsave(&irqlist_lock, flags); - - t = hp300_irq_list[irq]; - if (!t) /* no handlers at all for that IRQ */ - { - printk(KERN_ERR "hp300_free_irq: attempt to remove nonexistent handler for IRQ %d\n", irq); - spin_unlock_irqrestore(&irqlist_lock, flags); - return; - } - - if (t->dev_id == dev_id) - { /* removing first handler on chain */ - t->flags = IRQ_FLG_STD; /* we probably don't really need these */ - t->dev_id = NULL; - t->devname = NULL; - t->handler = NULL; /* frees this irq_node_t */ - hp300_irq_list[irq] = t->next; - spin_unlock_irqrestore(&irqlist_lock, flags); - return; - } - - /* OK, must be removing from middle of the chain */ - - for (t = hp300_irq_list[irq]; t->next && t->next->dev_id != dev_id; t = t->next) - /* do nothing */; - if (!t->next) - { - printk(KERN_ERR "hp300_free_irq: attempt to remove nonexistent handler for IRQ %d\n", irq); - spin_unlock_irqrestore(&irqlist_lock, flags); - return; - } - /* remove the entry after t: */ - t->next->flags = IRQ_FLG_STD; - t->next->dev_id = NULL; - t->next->devname = NULL; - t->next->handler = NULL; - t->next = t->next->next; - - spin_unlock_irqrestore(&irqlist_lock, flags); -} - -int show_hp300_interrupts(struct seq_file *p, void *v) -{ - return 0; -} - -void __init hp300_init_IRQ(void) -{ - spin_lock_init(&irqlist_lock); -} diff --git a/arch/m68k/hp300/ints.h b/arch/m68k/hp300/ints.h deleted file mode 100644 index 8cfabe2f3840..000000000000 --- a/arch/m68k/hp300/ints.h +++ /dev/null @@ -1,9 +0,0 @@ -extern void hp300_init_IRQ(void); -extern void (*hp300_handlers[8])(int, void *, struct pt_regs *); -extern void hp300_free_irq(unsigned int irq, void *dev_id); -extern int hp300_request_irq(unsigned int irq, - irqreturn_t (*handler) (int, void *, struct pt_regs *), - unsigned long flags, const char *devname, void *dev_id); - -/* number of interrupts, includes 0 (what's that?) */ -#define HP300_NUM_IRQS 8 diff --git a/arch/m68k/hp300/time.c b/arch/m68k/hp300/time.c index 8da5b1b31e61..7df05662b277 100644 --- a/arch/m68k/hp300/time.c +++ b/arch/m68k/hp300/time.c @@ -18,7 +18,6 @@ #include <asm/system.h> #include <asm/traps.h> #include <asm/blinken.h> -#include "ints.h" /* Clock hardware definitions */ @@ -71,7 +70,7 @@ void __init hp300_sched_init(irqreturn_t (*vector)(int, void *, struct pt_regs * asm volatile(" movpw %0,%1@(5)" : : "d" (INTVAL), "a" (CLOCKBASE)); - cpu_request_irq(6, hp300_tick, IRQ_FLG_STD, "timer tick", vector); + request_irq(IRQ_AUTO_6, hp300_tick, IRQ_FLG_STD, "timer tick", vector); out_8(CLOCKBASE + CLKCR2, 0x1); /* select CR1 */ out_8(CLOCKBASE + CLKCR1, 0x40); /* enable irq */ |