From 538380da1a41c981c640bd22a091fdfc32d1e81e Mon Sep 17 00:00:00 2001
From: Jesper Nilsson <jesper.nilsson@axis.com>
Date: Fri, 25 Jan 2008 16:15:44 +0100
Subject: [PATCH] CRIS v32: Update kernel/smp.c for CRIS v32.

- Change include paths to machine specific headers (asm/arch/hwregs -> hwregs)
- Add cpu_possible_map as cpumask_t and export it.
- Drop struct pt_regs parameter from crisv32_ipi_interrupt.
- timer -> timer0
---
 arch/cris/arch-v32/kernel/smp.c | 31 +++++++++++++++++++++----------
 1 file changed, 21 insertions(+), 10 deletions(-)

diff --git a/arch/cris/arch-v32/kernel/smp.c b/arch/cris/arch-v32/kernel/smp.c
index 171c96e0a5d..a9c3334e46c 100644
--- a/arch/cris/arch-v32/kernel/smp.c
+++ b/arch/cris/arch-v32/kernel/smp.c
@@ -1,11 +1,12 @@
+#include <linux/types.h>
 #include <asm/delay.h>
-#include <asm/arch/irq.h>
-#include <asm/arch/hwregs/intr_vect.h>
-#include <asm/arch/hwregs/intr_vect_defs.h>
+#include <irq.h>
+#include <hwregs/intr_vect.h>
+#include <hwregs/intr_vect_defs.h>
 #include <asm/tlbflush.h>
 #include <asm/mmu_context.h>
-#include <asm/arch/hwregs/mmu_defs_asm.h>
-#include <asm/arch/hwregs/supp_reg.h>
+#include <hwregs/asm/mmu_defs_asm.h>
+#include <hwregs/supp_reg.h>
 #include <asm/atomic.h>
 
 #include <linux/err.h>
@@ -20,6 +21,7 @@
 #define IPI_SCHEDULE 1
 #define IPI_CALL 2
 #define IPI_FLUSH_TLB 4
+#define IPI_BOOT 8
 
 #define FLUSH_ALL (void*)0xffffffff
 
@@ -30,6 +32,8 @@ spinlock_t cris_atomic_locks[] = { [0 ... LOCK_COUNT - 1] = SPIN_LOCK_UNLOCKED};
 cpumask_t cpu_online_map = CPU_MASK_NONE;
 EXPORT_SYMBOL(cpu_online_map);
 cpumask_t phys_cpu_present_map = CPU_MASK_NONE;
+cpumask_t cpu_possible_map;
+EXPORT_SYMBOL(cpu_possible_map);
 EXPORT_SYMBOL(phys_cpu_present_map);
 
 /* Variables used during SMP boot */
@@ -55,13 +59,12 @@ static unsigned long flush_addr;
 extern int setup_irq(int, struct irqaction *);
 
 /* Mode registers */
-static unsigned long irq_regs[NR_CPUS] =
-{
+static unsigned long irq_regs[NR_CPUS] = {
   regi_irq,
   regi_irq2
 };
 
-static irqreturn_t crisv32_ipi_interrupt(int irq, void *dev_id, struct pt_regs *regs);
+static irqreturn_t crisv32_ipi_interrupt(int irq, void *dev_id);
 static int send_ipi(int vector, int wait, cpumask_t cpu_mask);
 static struct irqaction irq_ipi  = {
 	.handler = crisv32_ipi_interrupt,
@@ -101,6 +104,7 @@ void __devinit smp_prepare_boot_cpu(void)
 
 	cpu_set(0, cpu_online_map);
 	cpu_set(0, phys_cpu_present_map);
+	cpu_set(0, cpu_possible_map);
 }
 
 void __init smp_cpus_done(unsigned int max_cpus)
@@ -113,6 +117,7 @@ smp_boot_one_cpu(int cpuid)
 {
 	unsigned timeout;
 	struct task_struct *idle;
+	cpumask_t cpu_mask = CPU_MASK_NONE;
 
 	idle = fork_idle(cpuid);
 	if (IS_ERR(idle))
@@ -124,6 +129,12 @@ smp_boot_one_cpu(int cpuid)
 	smp_init_current_idle_thread = task_thread_info(idle);
 	cpu_now_booting = cpuid;
 
+	/* Kick it */
+	cpu_set(cpuid, cpu_online_map);
+	cpu_set(cpuid, cpu_mask);
+	send_ipi(IPI_BOOT, 0, cpu_mask);
+	cpu_clear(cpuid, cpu_online_map);
+
 	/* Wait for CPU to come online */
 	for (timeout = 0; timeout < 10000; timeout++) {
 		if(cpu_online(cpuid)) {
@@ -165,7 +176,7 @@ void __init smp_callin(void)
 	/* Enable IRQ and idle */
 	REG_WR(intr_vect, irq_regs[cpu], rw_mask, vect_mask);
 	unmask_irq(IPI_INTR_VECT);
-	unmask_irq(TIMER_INTR_VECT);
+	unmask_irq(TIMER0_INTR_VECT);
 	preempt_disable();
 	local_irq_enable();
 
@@ -328,7 +339,7 @@ int smp_call_function(void (*func)(void *info), void *info,
 	return ret;
 }
 
-irqreturn_t crisv32_ipi_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+irqreturn_t crisv32_ipi_interrupt(int irq, void *dev_id)
 {
 	void (*func) (void *info) = call_data->func;
 	void *info = call_data->info;
-- 
2.41.1