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authorPaul Mundt <lethal@linux-sh.org>2008-08-06 18:21:03 +0900
committerPaul Mundt <lethal@linux-sh.org>2008-09-08 10:35:03 +0900
commit6f52707e6882eb3bc6920c3f59beb05d23d68354 (patch)
treec64ee09a4d2d6169d28daea1f3737d002ffc1402 /arch
parentc7936b9abcf5e043e73f183a37e81787f6178dd0 (diff)
sh: smp: Hook up a timer IPI stub.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch')
-rw-r--r--arch/sh/include/asm/smp.h19
-rw-r--r--arch/sh/kernel/smp.c18
2 files changed, 31 insertions, 6 deletions
diff --git a/arch/sh/include/asm/smp.h b/arch/sh/include/asm/smp.h
index 5ebe0d09559..9d22cda67c2 100644
--- a/arch/sh/include/asm/smp.h
+++ b/arch/sh/include/asm/smp.h
@@ -21,19 +21,26 @@ extern int __cpu_number_map[NR_CPUS];
extern int __cpu_logical_map[NR_CPUS];
#define cpu_logical_map(cpu) __cpu_logical_map[cpu]
-#define SMP_MSG_FUNCTION 0
-#define SMP_MSG_RESCHEDULE 1
-#define SMP_MSG_FUNCTION_SINGLE 2
-#define SMP_MSG_NR 3
+enum {
+ SMP_MSG_FUNCTION,
+ SMP_MSG_RESCHEDULE,
+ SMP_MSG_FUNCTION_SINGLE,
+ SMP_MSG_TIMER,
+
+ SMP_MSG_NR, /* must be last */
+};
void smp_message_recv(unsigned int msg);
+void smp_timer_broadcast(cpumask_t mask);
+
void plat_smp_setup(void);
void plat_prepare_cpus(unsigned int max_cpus);
int plat_smp_processor_id(void);
void plat_start_cpu(unsigned int cpu, unsigned long entry_point);
void plat_send_ipi(unsigned int cpu, unsigned int message);
-extern void arch_send_call_function_single_ipi(int cpu);
-extern void arch_send_call_function_ipi(cpumask_t mask);
+
+void arch_send_call_function_single_ipi(int cpu);
+void arch_send_call_function_ipi(cpumask_t mask);
#else
diff --git a/arch/sh/kernel/smp.c b/arch/sh/kernel/smp.c
index ebfdd364544..9cb3734dbd4 100644
--- a/arch/sh/kernel/smp.c
+++ b/arch/sh/kernel/smp.c
@@ -184,6 +184,21 @@ void arch_send_call_function_single_ipi(int cpu)
plat_send_ipi(cpu, SMP_MSG_FUNCTION_SINGLE);
}
+void smp_timer_broadcast(cpumask_t mask)
+{
+ int cpu;
+
+ for_each_cpu_mask(cpu, mask)
+ plat_send_ipi(cpu, SMP_MSG_TIMER);
+}
+
+static void ipi_timer(void)
+{
+ irq_enter();
+ /* XXX ... */
+ irq_exit();
+}
+
void smp_message_recv(unsigned int msg)
{
switch (msg) {
@@ -195,6 +210,9 @@ void smp_message_recv(unsigned int msg)
case SMP_MSG_FUNCTION_SINGLE:
generic_smp_call_function_single_interrupt();
break;
+ case SMP_MSG_TIMER:
+ ipi_timer();
+ break;
default:
printk(KERN_WARNING "SMP %d: %s(): unknown IPI %d\n",
smp_processor_id(), __func__, msg);