1 files changed, 137 insertions, 89 deletions

diff --git a/arch/sparc/kernel/sun4d_smp.c b/arch/sparc/kernel/sun4d_smp.c
index 475d50b96cd..d5c319553fd 100644
--- a/arch/sparc/kernel/sun4d_smp.c
+++ b/arch/sparc/kernel/sun4d_smp.c
@@ -6,15 +6,20 @@
  * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu)
  */
 
+#include <linux/clockchips.h>
 #include <linux/interrupt.h>
 #include <linux/profile.h>
 #include <linux/delay.h>
+#include <linux/sched.h>
 #include <linux/cpu.h>
 
+#include <asm/cacheflush.h>
+#include <asm/switch_to.h>
+#include <asm/tlbflush.h>
+#include <asm/timer.h>
+#include <asm/oplib.h>
 #include <asm/sbi.h>
 #include <asm/mmu.h>
-#include <asm/tlbflush.h>
-#include <asm/cacheflush.h>
 
 #include "kernel.h"
 #include "irq.h"
@@ -32,7 +37,7 @@ static inline unsigned long sun4d_swap(volatile unsigned long *ptr, unsigned lon
 	return val;
 }
 
-static void smp_setup_percpu_timer(void);
+static void smp4d_ipi_init(void);
 
 static unsigned char cpu_leds[32];
 
@@ -45,10 +50,9 @@ static inline void show_leds(int cpuid)
 			      "i" (ASI_M_CTL));
 }
 
-void __cpuinit smp4d_callin(void)
+void sun4d_cpu_pre_starting(void *arg)
 {
-	int cpuid = hard_smp4d_processor_id();
-	unsigned long flags;
+	int cpuid = hard_smp_processor_id();
 
 	/* Show we are alive */
 	cpu_leds[cpuid] = 0x6;
@@ -56,31 +60,23 @@ void __cpuinit smp4d_callin(void)
 
 	/* Enable level15 interrupt, disable level14 interrupt for now */
 	cc_set_imsk((cc_get_imsk() & ~0x8000) | 0x4000);
+}
+
+void sun4d_cpu_pre_online(void *arg)
+{
+	unsigned long flags;
+	int cpuid;
 
-	local_flush_cache_all();
-	local_flush_tlb_all();
+	cpuid = hard_smp_processor_id();
 
-	notify_cpu_starting(cpuid);
-	/*
-	 * Unblock the master CPU _only_ when the scheduler state
+	/* Unblock the master CPU _only_ when the scheduler state
 	 * of all secondary CPUs will be up-to-date, so after
 	 * the SMP initialization the master will be just allowed
 	 * to call the scheduler code.
 	 */
-	/* Get our local ticker going. */
-	smp_setup_percpu_timer();
-
-	calibrate_delay();
-	smp_store_cpu_info(cpuid);
-	local_flush_cache_all();
-	local_flush_tlb_all();
-
-	/* Allow master to continue. */
 	sun4d_swap((unsigned long *)&cpu_callin_map[cpuid], 1);
-	local_flush_cache_all();
-	local_flush_tlb_all();
-
-	cpu_probe();
+	local_ops->cache_all();
+	local_ops->tlb_all();
 
 	while ((unsigned long)current_set[cpuid] < PAGE_OFFSET)
 		barrier();
@@ -100,19 +96,15 @@ void __cpuinit smp4d_callin(void)
 	atomic_inc(&init_mm.mm_count);
 	current->active_mm = &init_mm;
 
-	local_flush_cache_all();
-	local_flush_tlb_all();
-
-	local_irq_enable();	/* We don't allow PIL 14 yet */
+	local_ops->cache_all();
+	local_ops->tlb_all();
 
-	while (!cpu_isset(cpuid, smp_commenced_mask))
+	while (!cpumask_test_cpu(cpuid, &smp_commenced_mask))
 		barrier();
 
 	spin_lock_irqsave(&sun4d_imsk_lock, flags);
 	cc_set_imsk(cc_get_imsk() & ~0x4000); /* Allow PIL 14 as well */
 	spin_unlock_irqrestore(&sun4d_imsk_lock, flags);
-	set_cpu_online(cpuid, true);
-
 }
 
 /*
@@ -120,24 +112,20 @@ void __cpuinit smp4d_callin(void)
  */
 void __init smp4d_boot_cpus(void)
 {
+	smp4d_ipi_init();
 	if (boot_cpu_id)
 		current_set[0] = NULL;
-	smp_setup_percpu_timer();
-	local_flush_cache_all();
+	local_ops->cache_all();
 }
 
-int __cpuinit smp4d_boot_one_cpu(int i)
+int smp4d_boot_one_cpu(int i, struct task_struct *idle)
 {
 	unsigned long *entry = &sun4d_cpu_startup;
-	struct task_struct *p;
 	int timeout;
 	int cpu_node;
 
 	cpu_find_by_instance(i, &cpu_node, NULL);
-	/* Cook up an idler for this guy. */
-	p = fork_idle(i);
-	current_set[i] = task_thread_info(p);
-
+	current_set[i] = task_thread_info(idle);
 	/*
 	 * Initialize the contexts table
 	 * Since the call to prom_startcpu() trashes the structure,
@@ -149,7 +137,7 @@ int __cpuinit smp4d_boot_one_cpu(int i)
 
 	/* whirrr, whirrr, whirrrrrrrrr... */
 	printk(KERN_INFO "Starting CPU %d at %p\n", i, entry);
-	local_flush_cache_all();
+	local_ops->cache_all();
 	prom_startcpu(cpu_node,
 		      &smp_penguin_ctable, 0, (char *)entry);
 
@@ -167,7 +155,7 @@ int __cpuinit smp4d_boot_one_cpu(int i)
 		return -ENODEV;
 
 	}
-	local_flush_cache_all();
+	local_ops->cache_all();
 	return 0;
 }
 
@@ -184,13 +172,100 @@ void __init smp4d_smp_done(void)
 		prev = &cpu_data(i).next;
 	}
 	*prev = first;
-	local_flush_cache_all();
+	local_ops->cache_all();
 
 	/* Ok, they are spinning and ready to go. */
 	smp_processors_ready = 1;
 	sun4d_distribute_irqs();
 }
 
+/* Memory structure giving interrupt handler information about IPI generated */
+struct sun4d_ipi_work {
+	int single;
+	int msk;
+	int resched;
+};
+
+static DEFINE_PER_CPU_SHARED_ALIGNED(struct sun4d_ipi_work, sun4d_ipi_work);
+
+/* Initialize IPIs on the SUN4D SMP machine */
+static void __init smp4d_ipi_init(void)
+{
+	int cpu;
+	struct sun4d_ipi_work *work;
+
+	printk(KERN_INFO "smp4d: setup IPI at IRQ %d\n", SUN4D_IPI_IRQ);
+
+	for_each_possible_cpu(cpu) {
+		work = &per_cpu(sun4d_ipi_work, cpu);
+		work->single = work->msk = work->resched = 0;
+	}
+}
+
+void sun4d_ipi_interrupt(void)
+{
+	struct sun4d_ipi_work *work = &__get_cpu_var(sun4d_ipi_work);
+
+	if (work->single) {
+		work->single = 0;
+		smp_call_function_single_interrupt();
+	}
+	if (work->msk) {
+		work->msk = 0;
+		smp_call_function_interrupt();
+	}
+	if (work->resched) {
+		work->resched = 0;
+		smp_resched_interrupt();
+	}
+}
+
+/* +-------+-------------+-----------+------------------------------------+
+ * | bcast |  devid      |   sid     |              levels mask           |
+ * +-------+-------------+-----------+------------------------------------+
+ *  31      30         23 22       15 14                                 0
+ */
+#define IGEN_MESSAGE(bcast, devid, sid, levels) \
+	(((bcast) << 31) | ((devid) << 23) | ((sid) << 15) | (levels))
+
+static void sun4d_send_ipi(int cpu, int level)
+{
+	cc_set_igen(IGEN_MESSAGE(0, cpu << 3, 6 + ((level >> 1) & 7), 1 << (level - 1)));
+}
+
+static void sun4d_ipi_single(int cpu)
+{
+	struct sun4d_ipi_work *work = &per_cpu(sun4d_ipi_work, cpu);
+
+	/* Mark work */
+	work->single = 1;
+
+	/* Generate IRQ on the CPU */
+	sun4d_send_ipi(cpu, SUN4D_IPI_IRQ);
+}
+
+static void sun4d_ipi_mask_one(int cpu)
+{
+	struct sun4d_ipi_work *work = &per_cpu(sun4d_ipi_work, cpu);
+
+	/* Mark work */
+	work->msk = 1;
+
+	/* Generate IRQ on the CPU */
+	sun4d_send_ipi(cpu, SUN4D_IPI_IRQ);
+}
+
+static void sun4d_ipi_resched(int cpu)
+{
+	struct sun4d_ipi_work *work = &per_cpu(sun4d_ipi_work, cpu);
+
+	/* Mark work */
+	work->resched = 1;
+
+	/* Generate IRQ on the CPU (any IRQ will cause resched) */
+	sun4d_send_ipi(cpu, SUN4D_IPI_IRQ);
+}
+
 static struct smp_funcall {
 	smpfunc_t func;
 	unsigned long arg1;
@@ -205,7 +280,7 @@ static struct smp_funcall {
 static DEFINE_SPINLOCK(cross_call_lock);
 
 /* Cross calls must be serialized, at least currently. */
-static void smp4d_cross_call(smpfunc_t func, cpumask_t mask, unsigned long arg1,
+static void sun4d_cross_call(smpfunc_t func, cpumask_t mask, unsigned long arg1,
 			     unsigned long arg2, unsigned long arg3,
 			     unsigned long arg4)
 {
@@ -239,10 +314,10 @@ static void smp4d_cross_call(smpfunc_t func, cpumask_t mask, unsigned long arg1,
 		{
 			register int i;
 
-			cpu_clear(smp_processor_id(), mask);
-			cpus_and(mask, cpu_online_map, mask);
+			cpumask_clear_cpu(smp_processor_id(), &mask);
+			cpumask_and(&mask, cpu_online_mask, &mask);
 			for (i = 0; i <= high; i++) {
-				if (cpu_isset(i, mask)) {
+				if (cpumask_test_cpu(i, &mask)) {
 					ccall_info.processors_in[i] = 0;
 					ccall_info.processors_out[i] = 0;
 					sun4d_send_ipi(i, IRQ_CROSS_CALL);
@@ -255,7 +330,7 @@ static void smp4d_cross_call(smpfunc_t func, cpumask_t mask, unsigned long arg1,
 
 			i = 0;
 			do {
-				if (!cpu_isset(i, mask))
+				if (!cpumask_test_cpu(i, &mask))
 					continue;
 				while (!ccall_info.processors_in[i])
 					barrier();
@@ -263,7 +338,7 @@ static void smp4d_cross_call(smpfunc_t func, cpumask_t mask, unsigned long arg1,
 
 			i = 0;
 			do {
-				if (!cpu_isset(i, mask))
+				if (!cpumask_test_cpu(i, &mask))
 					continue;
 				while (!ccall_info.processors_out[i])
 					barrier();
@@ -277,7 +352,7 @@ static void smp4d_cross_call(smpfunc_t func, cpumask_t mask, unsigned long arg1,
 /* Running cross calls. */
 void smp4d_cross_call_irq(void)
 {
-	int i = hard_smp4d_processor_id();
+	int i = hard_smp_processor_id();
 
 	ccall_info.processors_in[i] = 1;
 	ccall_info.func(ccall_info.arg1, ccall_info.arg2, ccall_info.arg3,
@@ -288,7 +363,8 @@ void smp4d_cross_call_irq(void)
 void smp4d_percpu_timer_interrupt(struct pt_regs *regs)
 {
 	struct pt_regs *old_regs;
-	int cpu = hard_smp4d_processor_id();
+	int cpu = hard_smp_processor_id();
+	struct clock_event_device *ce;
 	static int cpu_tick[NR_CPUS];
 	static char led_mask[] = { 0xe, 0xd, 0xb, 0x7, 0xb, 0xd };
 
@@ -304,45 +380,21 @@ void smp4d_percpu_timer_interrupt(struct pt_regs *regs)
 		show_leds(cpu);
 	}
 
-	profile_tick(CPU_PROFILING);
-
-	if (!--prof_counter(cpu)) {
-		int user = user_mode(regs);
+	ce = &per_cpu(sparc32_clockevent, cpu);
 
-		irq_enter();
-		update_process_times(user);
-		irq_exit();
+	irq_enter();
+	ce->event_handler(ce);
+	irq_exit();
 
-		prof_counter(cpu) = prof_multiplier(cpu);
-	}
 	set_irq_regs(old_regs);
 }
 
-static void __cpuinit smp_setup_percpu_timer(void)
-{
-	int cpu = hard_smp4d_processor_id();
-
-	prof_counter(cpu) = prof_multiplier(cpu) = 1;
-	load_profile_irq(cpu, lvl14_resolution);
-}
-
-void __init smp4d_blackbox_id(unsigned *addr)
-{
-	int rd = *addr & 0x3e000000;
-
-	addr[0] = 0xc0800800 | rd;		/* lda [%g0] ASI_M_VIKING_TMP1, reg */
-	addr[1] = 0x01000000;			/* nop */
-	addr[2] = 0x01000000;			/* nop */
-}
-
-void __init smp4d_blackbox_current(unsigned *addr)
-{
-	int rd = *addr & 0x3e000000;
-
-	addr[0] = 0xc0800800 | rd;		/* lda [%g0] ASI_M_VIKING_TMP1, reg */
-	addr[2] = 0x81282002 | rd | (rd >> 11);	/* sll reg, 2, reg */
-	addr[4] = 0x01000000;			/* nop */
-}
+static const struct sparc32_ipi_ops sun4d_ipi_ops = {
+	.cross_call = sun4d_cross_call,
+	.resched    = sun4d_ipi_resched,
+	.single     = sun4d_ipi_single,
+	.mask_one   = sun4d_ipi_mask_one,
+};
 
 void __init sun4d_init_smp(void)
 {
@@ -351,11 +403,7 @@ void __init sun4d_init_smp(void)
 	/* Patch ipi15 trap table */
 	t_nmi[1] = t_nmi[1] + (linux_trap_ipi15_sun4d - linux_trap_ipi15_sun4m);
 
-	/* And set btfixup... */
-	BTFIXUPSET_BLACKBOX(hard_smp_processor_id, smp4d_blackbox_id);
-	BTFIXUPSET_BLACKBOX(load_current, smp4d_blackbox_current);
-	BTFIXUPSET_CALL(smp_cross_call, smp4d_cross_call, BTFIXUPCALL_NORM);
-	BTFIXUPSET_CALL(__hard_smp_processor_id, __smp4d_processor_id, BTFIXUPCALL_NORM);
+	sparc32_ipi_ops = &sun4d_ipi_ops;
 
 	for (i = 0; i < NR_CPUS; i++) {
 		ccall_info.processors_in[i] = 1;