#include <linux/interrupt.h>
#include <linux/kernel_stat.h>
#include <linux/seq_file.h>
+#include <linux/cpumask.h>
#include <asm/setup.h>
+#include <asm/serial-regs.h>
-unsigned long __mn10300_irq_enabled_epsw = EPSW_IE | EPSW_IM_7;
+unsigned long __mn10300_irq_enabled_epsw[NR_CPUS] __cacheline_aligned_in_smp = {
+ [0 ... NR_CPUS - 1] = EPSW_IE | EPSW_IM_7
+};
EXPORT_SYMBOL(__mn10300_irq_enabled_epsw);
+#ifdef CONFIG_SMP
+static char irq_affinity_online[NR_IRQS] = {
+ [0 ... NR_IRQS - 1] = 0
+};
+
+#define NR_IRQ_WORDS ((NR_IRQS + 31) / 32)
+static unsigned long irq_affinity_request[NR_IRQ_WORDS] = {
+ [0 ... NR_IRQ_WORDS - 1] = 0
+};
+#endif /* CONFIG_SMP */
+
atomic_t irq_err_count;
/*
*/
static void mn10300_cpupic_ack(unsigned int irq)
{
+ unsigned long flags;
u16 tmp;
- *(volatile u8 *) &GxICR(irq) = GxICR_DETECT;
+
+ flags = arch_local_cli_save();
+ GxICR_u8(irq) = GxICR_DETECT;
tmp = GxICR(irq);
+ arch_local_irq_restore(flags);
}
-static void mn10300_cpupic_mask(unsigned int irq)
+static void __mask_and_set_icr(unsigned int irq,
+ unsigned int mask, unsigned int set)
{
- u16 tmp = GxICR(irq);
- GxICR(irq) = (tmp & GxICR_LEVEL);
+ unsigned long flags;
+ u16 tmp;
+
+ flags = arch_local_cli_save();
+ tmp = GxICR(irq);
+ GxICR(irq) = (tmp & mask) | set;
tmp = GxICR(irq);
+ arch_local_irq_restore(flags);
+}
+
+static void mn10300_cpupic_mask(unsigned int irq)
+{
+ __mask_and_set_icr(irq, GxICR_LEVEL, 0);
}
static void mn10300_cpupic_mask_ack(unsigned int irq)
{
- u16 tmp = GxICR(irq);
- GxICR(irq) = (tmp & GxICR_LEVEL) | GxICR_DETECT;
- tmp = GxICR(irq);
+#ifdef CONFIG_SMP
+ unsigned long flags;
+ u16 tmp;
+
+ flags = arch_local_cli_save();
+
+ if (!test_and_clear_bit(irq, irq_affinity_request)) {
+ tmp = GxICR(irq);
+ GxICR(irq) = (tmp & GxICR_LEVEL) | GxICR_DETECT;
+ tmp = GxICR(irq);
+ } else {
+ u16 tmp2;
+ tmp = GxICR(irq);
+ GxICR(irq) = (tmp & GxICR_LEVEL);
+ tmp2 = GxICR(irq);
+
+ irq_affinity_online[irq] =
+ any_online_cpu(*irq_desc[irq].affinity);
+ CROSS_GxICR(irq, irq_affinity_online[irq]) =
+ (tmp & (GxICR_LEVEL | GxICR_ENABLE)) | GxICR_DETECT;
+ tmp = CROSS_GxICR(irq, irq_affinity_online[irq]);
+ }
+
+ arch_local_irq_restore(flags);
+#else /* CONFIG_SMP */
+ __mask_and_set_icr(irq, GxICR_LEVEL, GxICR_DETECT);
+#endif /* CONFIG_SMP */
}
static void mn10300_cpupic_unmask(unsigned int irq)
{
- u16 tmp = GxICR(irq);
- GxICR(irq) = (tmp & GxICR_LEVEL) | GxICR_ENABLE;
- tmp = GxICR(irq);
+ __mask_and_set_icr(irq, GxICR_LEVEL, GxICR_ENABLE);
}
static void mn10300_cpupic_unmask_clear(unsigned int irq)
* device has ceased to assert its interrupt line and the interrupt
* channel has been disabled in the PIC, so for level-triggered
* interrupts we need to clear the request bit when we re-enable */
- u16 tmp = GxICR(irq);
- GxICR(irq) = (tmp & GxICR_LEVEL) | GxICR_ENABLE | GxICR_DETECT;
- tmp = GxICR(irq);
+#ifdef CONFIG_SMP
+ unsigned long flags;
+ u16 tmp;
+
+ flags = arch_local_cli_save();
+
+ if (!test_and_clear_bit(irq, irq_affinity_request)) {
+ tmp = GxICR(irq);
+ GxICR(irq) = (tmp & GxICR_LEVEL) | GxICR_ENABLE | GxICR_DETECT;
+ tmp = GxICR(irq);
+ } else {
+ tmp = GxICR(irq);
+
+ irq_affinity_online[irq] = any_online_cpu(*irq_desc[irq].affinity);
+ CROSS_GxICR(irq, irq_affinity_online[irq]) = (tmp & GxICR_LEVEL) | GxICR_ENABLE | GxICR_DETECT;
+ tmp = CROSS_GxICR(irq, irq_affinity_online[irq]);
+ }
+
+ arch_local_irq_restore(flags);
+#else /* CONFIG_SMP */
+ __mask_and_set_icr(irq, GxICR_LEVEL, GxICR_ENABLE | GxICR_DETECT);
+#endif /* CONFIG_SMP */
}
+#ifdef CONFIG_SMP
+static int
+mn10300_cpupic_setaffinity(unsigned int irq, const struct cpumask *mask)
+{
+ unsigned long flags;
+ int err;
+
+ flags = arch_local_cli_save();
+
+ /* check irq no */
+ switch (irq) {
+ case TMJCIRQ:
+ case RESCHEDULE_IPI:
+ case CALL_FUNC_SINGLE_IPI:
+ case LOCAL_TIMER_IPI:
+ case FLUSH_CACHE_IPI:
+ case CALL_FUNCTION_NMI_IPI:
+ case GDB_NMI_IPI:
+#ifdef CONFIG_MN10300_TTYSM0
+ case SC0RXIRQ:
+ case SC0TXIRQ:
+#ifdef CONFIG_MN10300_TTYSM0_TIMER8
+ case TM8IRQ:
+#elif CONFIG_MN10300_TTYSM0_TIMER2
+ case TM2IRQ:
+#endif /* CONFIG_MN10300_TTYSM0_TIMER8 */
+#endif /* CONFIG_MN10300_TTYSM0 */
+
+#ifdef CONFIG_MN10300_TTYSM1
+ case SC1RXIRQ:
+ case SC1TXIRQ:
+#ifdef CONFIG_MN10300_TTYSM1_TIMER12
+ case TM12IRQ:
+#elif CONFIG_MN10300_TTYSM1_TIMER9
+ case TM9IRQ:
+#elif CONFIG_MN10300_TTYSM1_TIMER3
+ case TM3IRQ:
+#endif /* CONFIG_MN10300_TTYSM1_TIMER12 */
+#endif /* CONFIG_MN10300_TTYSM1 */
+
+#ifdef CONFIG_MN10300_TTYSM2
+ case SC2RXIRQ:
+ case SC2TXIRQ:
+ case TM10IRQ:
+#endif /* CONFIG_MN10300_TTYSM2 */
+ err = -1;
+ break;
+
+ default:
+ set_bit(irq, irq_affinity_request);
+ err = 0;
+ break;
+ }
+
+ arch_local_irq_restore(flags);
+ return err;
+}
+#endif /* CONFIG_SMP */
+
/*
* MN10300 PIC level-triggered IRQ handling.
*
.mask = mn10300_cpupic_mask,
.mask_ack = mn10300_cpupic_mask,
.unmask = mn10300_cpupic_unmask_clear,
+#ifdef CONFIG_SMP
+ .set_affinity = mn10300_cpupic_setaffinity,
+#endif
};
/*
.mask = mn10300_cpupic_mask,
.mask_ack = mn10300_cpupic_mask_ack,
.unmask = mn10300_cpupic_unmask,
+#ifdef CONFIG_SMP
+ .set_affinity = mn10300_cpupic_setaffinity,
+#endif
};
/*
*/
void set_intr_level(int irq, u16 level)
{
- u16 tmp;
+ BUG_ON(in_interrupt());
- if (in_interrupt())
- BUG();
+ __mask_and_set_icr(irq, GxICR_ENABLE, level);
+}
- tmp = GxICR(irq);
- GxICR(irq) = (tmp & GxICR_ENABLE) | level;
- tmp = GxICR(irq);
+void mn10300_intc_set_level(unsigned int irq, unsigned int level)
+{
+ set_intr_level(irq, NUM2GxICR_LEVEL(level) & GxICR_LEVEL);
+}
+
+void mn10300_intc_clear(unsigned int irq)
+{
+ __mask_and_set_icr(irq, GxICR_LEVEL | GxICR_ENABLE, GxICR_DETECT);
+}
+
+void mn10300_intc_set(unsigned int irq)
+{
+ __mask_and_set_icr(irq, 0, GxICR_REQUEST | GxICR_DETECT);
+}
+
+void mn10300_intc_enable(unsigned int irq)
+{
+ mn10300_cpupic_unmask(irq);
+}
+
+void mn10300_intc_disable(unsigned int irq)
+{
+ mn10300_cpupic_mask(irq);
}
/*
* than before
* - see Documentation/mn10300/features.txt
*/
-void set_intr_postackable(int irq)
+void mn10300_set_lateack_irq_type(int irq)
{
set_irq_chip_and_handler(irq, &mn10300_cpu_pic_level,
handle_level_irq);
* interrupts */
set_irq_chip_and_handler(irq, &mn10300_cpu_pic_edge,
handle_level_irq);
+
unit_init_IRQ();
}
asmlinkage void do_IRQ(void)
{
unsigned long sp, epsw, irq_disabled_epsw, old_irq_enabled_epsw;
+ unsigned int cpu_id = smp_processor_id();
int irq;
sp = current_stack_pointer();
- if (sp - (sp & ~(THREAD_SIZE - 1)) < STACK_WARN)
- BUG();
+ BUG_ON(sp - (sp & ~(THREAD_SIZE - 1)) < STACK_WARN);
/* make sure local_irq_enable() doesn't muck up the interrupt priority
* setting in EPSW */
- old_irq_enabled_epsw = __mn10300_irq_enabled_epsw;
+ old_irq_enabled_epsw = __mn10300_irq_enabled_epsw[cpu_id];
local_save_flags(epsw);
- __mn10300_irq_enabled_epsw = EPSW_IE | (EPSW_IM & epsw);
+ __mn10300_irq_enabled_epsw[cpu_id] = EPSW_IE | (EPSW_IM & epsw);
irq_disabled_epsw = EPSW_IE | MN10300_CLI_LEVEL;
- __IRQ_STAT(smp_processor_id(), __irq_count)++;
+#ifdef CONFIG_MN10300_WD_TIMER
+ __IRQ_STAT(cpu_id, __irq_count)++;
+#endif
irq_enter();
local_irq_restore(epsw);
}
- __mn10300_irq_enabled_epsw = old_irq_enabled_epsw;
+ __mn10300_irq_enabled_epsw[cpu_id] = old_irq_enabled_epsw;
irq_exit();
}
seq_printf(p, "%3d: ", i);
for_each_present_cpu(cpu)
seq_printf(p, "%10u ", kstat_irqs_cpu(i, cpu));
- seq_printf(p, " %14s.%u", irq_desc[i].chip->name,
- (GxICR(i) & GxICR_LEVEL) >>
- GxICR_LEVEL_SHIFT);
+
+ if (i < NR_CPU_IRQS)
+ seq_printf(p, " %14s.%u",
+ irq_desc[i].chip->name,
+ (GxICR(i) & GxICR_LEVEL) >>
+ GxICR_LEVEL_SHIFT);
+ else
+ seq_printf(p, " %14s",
+ irq_desc[i].chip->name);
+
seq_printf(p, " %s", action->name);
for (action = action->next;
/* polish off with NMI and error counters */
case NR_IRQS:
+#ifdef CONFIG_MN10300_WD_TIMER
seq_printf(p, "NMI: ");
for (j = 0; j < NR_CPUS; j++)
if (cpu_online(j))
seq_printf(p, "%10u ", nmi_count(j));
seq_putc(p, '\n');
+#endif
seq_printf(p, "ERR: %10u\n", atomic_read(&irq_err_count));
break;
return 0;
}
+
+#ifdef CONFIG_HOTPLUG_CPU
+void migrate_irqs(void)
+{
+ irq_desc_t *desc;
+ int irq;
+ unsigned int self, new;
+ unsigned long flags;
+
+ self = smp_processor_id();
+ for (irq = 0; irq < NR_IRQS; irq++) {
+ desc = irq_desc + irq;
+
+ if (desc->status == IRQ_PER_CPU)
+ continue;
+
+ if (cpu_isset(self, irq_desc[irq].affinity) &&
+ !cpus_intersects(irq_affinity[irq], cpu_online_map)) {
+ int cpu_id;
+ cpu_id = first_cpu(cpu_online_map);
+ cpu_set(cpu_id, irq_desc[irq].affinity);
+ }
+ /* We need to operate irq_affinity_online atomically. */
+ arch_local_cli_save(flags);
+ if (irq_affinity_online[irq] == self) {
+ u16 x, tmp;
+
+ x = GxICR(irq);
+ GxICR(irq) = x & GxICR_LEVEL;
+ tmp = GxICR(irq);
+
+ new = any_online_cpu(irq_desc[irq].affinity);
+ irq_affinity_online[irq] = new;
+
+ CROSS_GxICR(irq, new) =
+ (x & GxICR_LEVEL) | GxICR_DETECT;
+ tmp = CROSS_GxICR(irq, new);
+
+ x &= GxICR_LEVEL | GxICR_ENABLE;
+ if (GxICR(irq) & GxICR_REQUEST) {
+ x |= GxICR_REQUEST | GxICR_DETECT;
+ CROSS_GxICR(irq, new) = x;
+ tmp = CROSS_GxICR(irq, new);
+ }
+ arch_local_irq_restore(flags);
+ }
+}
+#endif /* CONFIG_HOTPLUG_CPU */
git.openpandora.org / pandora-kernel.git / blobdiff