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Diffstat (limited to 'arch/sparc/kernel/sun4c_irq.c')
-rw-r--r--arch/sparc/kernel/sun4c_irq.c225
1 files changed, 0 insertions, 225 deletions
diff --git a/arch/sparc/kernel/sun4c_irq.c b/arch/sparc/kernel/sun4c_irq.c
deleted file mode 100644
index 892fb884910..00000000000
--- a/arch/sparc/kernel/sun4c_irq.c
+++ /dev/null
@@ -1,225 +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/init.h>
-#include <linux/of.h>
-#include <linux/of_device.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/idprom.h>
-#include <asm/machines.h>
-
-/*
- * 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 __iomem *interrupt_enable = NULL;
-
-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 = sbus_readb(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;
- }
- sbus_writeb(new_mask, interrupt_enable);
- 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 = sbus_readb(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;
- }
- sbus_writeb(new_mask, interrupt_enable);
- local_irq_restore(flags);
-}
-
-struct sun4c_timer_info {
- u32 l10_count;
- u32 l10_limit;
- u32 l14_count;
- u32 l14_limit;
-};
-
-static struct sun4c_timer_info __iomem *sun4c_timers;
-
-static void sun4c_clear_clock_irq(void)
-{
- sbus_readl(&sun4c_timers->l10_limit);
-}
-
-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)
-{
- const struct linux_prom_irqs *irq;
- struct device_node *dp;
- const u32 *addr;
- int err;
-
- dp = of_find_node_by_name(NULL, "counter-timer");
- if (!dp) {
- prom_printf("sun4c_init_timers: Unable to find counter-timer\n");
- prom_halt();
- }
-
- addr = of_get_property(dp, "address", NULL);
- if (!addr) {
- prom_printf("sun4c_init_timers: No address property\n");
- prom_halt();
- }
-
- sun4c_timers = (void __iomem *) (unsigned long) addr[0];
-
- irq = of_get_property(dp, "intr", NULL);
- of_node_put(dp);
- if (!irq) {
- prom_printf("sun4c_init_timers: No intr property\n");
- prom_halt();
- }
-
- /* 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.
- */
- sbus_writel((((1000000/HZ) + 1) << 10), &sun4c_timers->l10_limit);
-
- master_l10_counter = &sun4c_timers->l10_count;
-
- err = request_irq(irq[0].pri, counter_fn,
- (IRQF_DISABLED | SA_STATIC_ALLOC),
- "timer", NULL);
- if (err) {
- prom_printf("sun4c_init_timers: request_irq() fails with %d\n", err);
- prom_halt();
- }
-
- sun4c_disable_irq(irq[1].pri);
-}
-
-#ifdef CONFIG_SMP
-static void sun4c_nop(void) {}
-#endif
-
-void __init sun4c_init_IRQ(void)
-{
- struct device_node *dp;
- const u32 *addr;
-
- dp = of_find_node_by_name(NULL, "interrupt-enable");
- if (!dp) {
- prom_printf("sun4c_init_IRQ: Unable to find interrupt-enable\n");
- prom_halt();
- }
-
- addr = of_get_property(dp, "address", NULL);
- of_node_put(dp);
- if (!addr) {
- prom_printf("sun4c_init_IRQ: No address property\n");
- prom_halt();
- }
-
- interrupt_enable = (void __iomem *) (unsigned long) addr[0];
-
- 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(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
- sbus_writeb(SUN4C_INT_ENABLE, interrupt_enable);
- /* Cannot enable interrupts until OBP ticker is disabled. */
-}
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