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Diffstat (limited to 'arch/sparc/kernel/sun4c_irq.c')
-rw-r--r--arch/sparc/kernel/sun4c_irq.c261
1 files changed, 0 insertions, 261 deletions
diff --git a/arch/sparc/kernel/sun4c_irq.c b/arch/sparc/kernel/sun4c_irq.c
deleted file mode 100644
index c6ac9fc5256..00000000000
--- a/arch/sparc/kernel/sun4c_irq.c
+++ /dev/null
@@ -1,261 +0,0 @@
-/* sun4c_irq.c
- * arch/sparc/kernel/sun4c_irq.c:
- *
- * djhr: Hacked out of irq.c into a CPU dependent version.
- *
- * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
- * Copyright (C) 1995 Miguel de Icaza (miguel@nuclecu.unam.mx)
- * Copyright (C) 1995 Pete A. Zaitcev (zaitcev@yahoo.com)
- * Copyright (C) 1996 Dave Redman (djhr@tadpole.co.uk)
- */
-
-#include <linux/errno.h>
-#include <linux/linkage.h>
-#include <linux/kernel_stat.h>
-#include <linux/signal.h>
-#include <linux/sched.h>
-#include <linux/ptrace.h>
-#include <linux/interrupt.h>
-#include <linux/slab.h>
-#include <linux/init.h>
-#include "irq.h"
-
-#include <asm/ptrace.h>
-#include <asm/processor.h>
-#include <asm/system.h>
-#include <asm/psr.h>
-#include <asm/vaddrs.h>
-#include <asm/timer.h>
-#include <asm/openprom.h>
-#include <asm/oplib.h>
-#include <asm/traps.h>
-#include <asm/irq.h>
-#include <asm/io.h>
-#include <asm/sun4paddr.h>
-#include <asm/idprom.h>
-#include <asm/machines.h>
-#include <asm/sbus.h>
-
-#if 0
-static struct resource sun4c_timer_eb = { "sun4c_timer" };
-static struct resource sun4c_intr_eb = { "sun4c_intr" };
-#endif
-
-/*
- * Bit field defines for the interrupt registers on various
- * Sparc machines.
- */
-
-/* The sun4c interrupt register. */
-#define SUN4C_INT_ENABLE 0x01 /* Allow interrupts. */
-#define SUN4C_INT_E14 0x80 /* Enable level 14 IRQ. */
-#define SUN4C_INT_E10 0x20 /* Enable level 10 IRQ. */
-#define SUN4C_INT_E8 0x10 /* Enable level 8 IRQ. */
-#define SUN4C_INT_E6 0x08 /* Enable level 6 IRQ. */
-#define SUN4C_INT_E4 0x04 /* Enable level 4 IRQ. */
-#define SUN4C_INT_E1 0x02 /* Enable level 1 IRQ. */
-
-/* Pointer to the interrupt enable byte
- *
- * Dave Redman (djhr@tadpole.co.uk)
- * What you may not be aware of is that entry.S requires this variable.
- *
- * --- linux_trap_nmi_sun4c --
- *
- * so don't go making it static, like I tried. sigh.
- */
-unsigned char *interrupt_enable = NULL;
-
-static int sun4c_pil_map[] = { 0, 1, 2, 3, 5, 7, 8, 9 };
-
-unsigned int sun4c_sbint_to_irq(struct sbus_dev *sdev, unsigned int sbint)
-{
- if (sbint >= sizeof(sun4c_pil_map)) {
- printk(KERN_ERR "%s: bogus SBINT %d\n", sdev->prom_name, sbint);
- BUG();
- }
- return sun4c_pil_map[sbint];
-}
-
-static void sun4c_disable_irq(unsigned int irq_nr)
-{
- unsigned long flags;
- unsigned char current_mask, new_mask;
-
- local_irq_save(flags);
- irq_nr &= (NR_IRQS - 1);
- current_mask = *interrupt_enable;
- switch(irq_nr) {
- case 1:
- new_mask = ((current_mask) & (~(SUN4C_INT_E1)));
- break;
- case 8:
- new_mask = ((current_mask) & (~(SUN4C_INT_E8)));
- break;
- case 10:
- new_mask = ((current_mask) & (~(SUN4C_INT_E10)));
- break;
- case 14:
- new_mask = ((current_mask) & (~(SUN4C_INT_E14)));
- break;
- default:
- local_irq_restore(flags);
- return;
- }
- *interrupt_enable = new_mask;
- local_irq_restore(flags);
-}
-
-static void sun4c_enable_irq(unsigned int irq_nr)
-{
- unsigned long flags;
- unsigned char current_mask, new_mask;
-
- local_irq_save(flags);
- irq_nr &= (NR_IRQS - 1);
- current_mask = *interrupt_enable;
- switch(irq_nr) {
- case 1:
- new_mask = ((current_mask) | SUN4C_INT_E1);
- break;
- case 8:
- new_mask = ((current_mask) | SUN4C_INT_E8);
- break;
- case 10:
- new_mask = ((current_mask) | SUN4C_INT_E10);
- break;
- case 14:
- new_mask = ((current_mask) | SUN4C_INT_E14);
- break;
- default:
- local_irq_restore(flags);
- return;
- }
- *interrupt_enable = new_mask;
- local_irq_restore(flags);
-}
-
-#define TIMER_IRQ 10 /* Also at level 14, but we ignore that one. */
-#define PROFILE_IRQ 14 /* Level14 ticker.. used by OBP for polling */
-
-volatile struct sun4c_timer_info *sun4c_timers;
-
-#ifdef CONFIG_SUN4
-/* This is an ugly hack to work around the
- current timer code, and make it work with
- the sun4/260 intersil
- */
-volatile struct sun4c_timer_info sun4_timer;
-#endif
-
-static void sun4c_clear_clock_irq(void)
-{
- volatile unsigned int clear_intr;
-#ifdef CONFIG_SUN4
- if (idprom->id_machtype == (SM_SUN4 | SM_4_260))
- clear_intr = sun4_timer.timer_limit10;
- else
-#endif
- clear_intr = sun4c_timers->timer_limit10;
-}
-
-static void sun4c_clear_profile_irq(int cpu)
-{
- /* Errm.. not sure how to do this.. */
-}
-
-static void sun4c_load_profile_irq(int cpu, unsigned int limit)
-{
- /* Errm.. not sure how to do this.. */
-}
-
-static void __init sun4c_init_timers(irq_handler_t counter_fn)
-{
- int irq;
-
- /* Map the Timer chip, this is implemented in hardware inside
- * the cache chip on the sun4c.
- */
-#ifdef CONFIG_SUN4
- if (idprom->id_machtype == (SM_SUN4 | SM_4_260))
- sun4c_timers = &sun4_timer;
- else
-#endif
- sun4c_timers = ioremap(SUN_TIMER_PHYSADDR,
- sizeof(struct sun4c_timer_info));
-
- /* Have the level 10 timer tick at 100HZ. We don't touch the
- * level 14 timer limit since we are letting the prom handle
- * them until we have a real console driver so L1-A works.
- */
- sun4c_timers->timer_limit10 = (((1000000/HZ) + 1) << 10);
- master_l10_counter = &sun4c_timers->cur_count10;
- master_l10_limit = &sun4c_timers->timer_limit10;
-
- irq = request_irq(TIMER_IRQ,
- counter_fn,
- (IRQF_DISABLED | SA_STATIC_ALLOC),
- "timer", NULL);
- if (irq) {
- prom_printf("time_init: unable to attach IRQ%d\n",TIMER_IRQ);
- prom_halt();
- }
-
-#if 0
- /* This does not work on 4/330 */
- sun4c_enable_irq(10);
-#endif
- claim_ticker14(NULL, PROFILE_IRQ, 0);
-}
-
-#ifdef CONFIG_SMP
-static void sun4c_nop(void) {}
-#endif
-
-void __init sun4c_init_IRQ(void)
-{
- struct linux_prom_registers int_regs[2];
- int ie_node;
-
- if (ARCH_SUN4) {
- interrupt_enable = (char *)
- ioremap(sun4_ie_physaddr, PAGE_SIZE);
- } else {
- struct resource phyres;
-
- ie_node = prom_searchsiblings (prom_getchild(prom_root_node),
- "interrupt-enable");
- if(ie_node == 0)
- panic("Cannot find /interrupt-enable node");
-
- /* Depending on the "address" property is bad news... */
- interrupt_enable = NULL;
- if (prom_getproperty(ie_node, "reg", (char *) int_regs,
- sizeof(int_regs)) != -1) {
- memset(&phyres, 0, sizeof(struct resource));
- phyres.flags = int_regs[0].which_io;
- phyres.start = int_regs[0].phys_addr;
- interrupt_enable = (char *) sbus_ioremap(&phyres, 0,
- int_regs[0].reg_size, "sun4c_intr");
- }
- }
- if (!interrupt_enable)
- panic("Cannot map interrupt_enable");
-
- BTFIXUPSET_CALL(sbint_to_irq, sun4c_sbint_to_irq, BTFIXUPCALL_NORM);
- BTFIXUPSET_CALL(enable_irq, sun4c_enable_irq, BTFIXUPCALL_NORM);
- BTFIXUPSET_CALL(disable_irq, sun4c_disable_irq, BTFIXUPCALL_NORM);
- BTFIXUPSET_CALL(enable_pil_irq, sun4c_enable_irq, BTFIXUPCALL_NORM);
- BTFIXUPSET_CALL(disable_pil_irq, sun4c_disable_irq, BTFIXUPCALL_NORM);
- BTFIXUPSET_CALL(clear_clock_irq, sun4c_clear_clock_irq, BTFIXUPCALL_NORM);
- BTFIXUPSET_CALL(clear_profile_irq, sun4c_clear_profile_irq, BTFIXUPCALL_NOP);
- BTFIXUPSET_CALL(load_profile_irq, sun4c_load_profile_irq, BTFIXUPCALL_NOP);
- sparc_init_timers = sun4c_init_timers;
-#ifdef CONFIG_SMP
- BTFIXUPSET_CALL(set_cpu_int, sun4c_nop, BTFIXUPCALL_NOP);
- BTFIXUPSET_CALL(clear_cpu_int, sun4c_nop, BTFIXUPCALL_NOP);
- BTFIXUPSET_CALL(set_irq_udt, sun4c_nop, BTFIXUPCALL_NOP);
-#endif
- *interrupt_enable = (SUN4C_INT_ENABLE);
- /* Cannot enable interrupts until OBP ticker is disabled. */
-}
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