aboutsummaryrefslogtreecommitdiffstats
path: root/arch/sparc/kernel/sun4d_smp.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/sparc/kernel/sun4d_smp.c')
-rw-r--r--arch/sparc/kernel/sun4d_smp.c93
1 files changed, 85 insertions, 8 deletions
diff --git a/arch/sparc/kernel/sun4d_smp.c b/arch/sparc/kernel/sun4d_smp.c
index 475d50b96cd0..133387980b56 100644
--- a/arch/sparc/kernel/sun4d_smp.c
+++ b/arch/sparc/kernel/sun4d_smp.c
@@ -32,6 +32,7 @@ static inline unsigned long sun4d_swap(volatile unsigned long *ptr, unsigned lon
return val;
}
+static void smp4d_ipi_init(void);
static void smp_setup_percpu_timer(void);
static unsigned char cpu_leds[32];
@@ -80,8 +81,6 @@ void __cpuinit smp4d_callin(void)
local_flush_cache_all();
local_flush_tlb_all();
- cpu_probe();
-
while ((unsigned long)current_set[cpuid] < PAGE_OFFSET)
barrier();
@@ -105,7 +104,7 @@ void __cpuinit smp4d_callin(void)
local_irq_enable(); /* We don't allow PIL 14 yet */
- while (!cpu_isset(cpuid, smp_commenced_mask))
+ while (!cpumask_test_cpu(cpuid, &smp_commenced_mask))
barrier();
spin_lock_irqsave(&sun4d_imsk_lock, flags);
@@ -120,6 +119,7 @@ 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();
@@ -191,6 +191,80 @@ void __init smp4d_smp_done(void)
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();
+ }
+}
+
+static void smp4d_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 smp4d_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 smp4d_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;
@@ -239,10 +313,10 @@ 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 +329,7 @@ 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 +337,7 @@ 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();
@@ -356,6 +430,9 @@ void __init sun4d_init_smp(void)
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);
+ BTFIXUPSET_CALL(smp_ipi_resched, smp4d_ipi_resched, BTFIXUPCALL_NORM);
+ BTFIXUPSET_CALL(smp_ipi_single, smp4d_ipi_single, BTFIXUPCALL_NORM);
+ BTFIXUPSET_CALL(smp_ipi_mask_one, smp4d_ipi_mask_one, BTFIXUPCALL_NORM);
for (i = 0; i < NR_CPUS; i++) {
ccall_info.processors_in[i] = 1;