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-rw-r--r--arch/mips/kernel/irq-gic.c47
1 files changed, 47 insertions, 0 deletions
diff --git a/arch/mips/kernel/irq-gic.c b/arch/mips/kernel/irq-gic.c
index 485e6a9..c01b307 100644
--- a/arch/mips/kernel/irq-gic.c
+++ b/arch/mips/kernel/irq-gic.c
@@ -10,6 +10,7 @@
#include <linux/init.h>
#include <linux/smp.h>
#include <linux/irq.h>
+#include <linux/clocksource.h>
#include <asm/io.h>
#include <asm/gic.h>
@@ -19,6 +20,8 @@
#include <linux/hardirq.h>
#include <asm-generic/bitops/find.h>
+unsigned int gic_frequency;
+unsigned int gic_present;
unsigned long _gic_base;
unsigned int gic_irq_base;
unsigned int gic_irq_flags[GIC_NUM_INTRS];
@@ -30,6 +33,39 @@ static struct gic_pcpu_mask pcpu_masks[NR_CPUS];
static struct gic_pending_regs pending_regs[NR_CPUS];
static struct gic_intrmask_regs intrmask_regs[NR_CPUS];
+#if defined(CONFIG_CSRC_GIC) || defined(CONFIG_CEVT_GIC)
+cycle_t gic_read_count(void)
+{
+ unsigned int hi, hi2, lo;
+
+ do {
+ GICREAD(GIC_REG(SHARED, GIC_SH_COUNTER_63_32), hi);
+ GICREAD(GIC_REG(SHARED, GIC_SH_COUNTER_31_00), lo);
+ GICREAD(GIC_REG(SHARED, GIC_SH_COUNTER_63_32), hi2);
+ } while (hi2 != hi);
+
+ return (((cycle_t) hi) << 32) + lo;
+}
+
+void gic_write_compare(cycle_t cnt)
+{
+ GICWRITE(GIC_REG(VPE_LOCAL, GIC_VPE_COMPARE_HI),
+ (int)(cnt >> 32));
+ GICWRITE(GIC_REG(VPE_LOCAL, GIC_VPE_COMPARE_LO),
+ (int)(cnt & 0xffffffff));
+}
+
+cycle_t gic_read_compare(void)
+{
+ unsigned int hi, lo;
+
+ GICREAD(GIC_REG(VPE_LOCAL, GIC_VPE_COMPARE_HI), hi);
+ GICREAD(GIC_REG(VPE_LOCAL, GIC_VPE_COMPARE_LO), lo);
+
+ return (((cycle_t) hi) << 32) + lo;
+}
+#endif
+
unsigned int gic_get_timer_pending(void)
{
unsigned int vpe_pending;
@@ -116,6 +152,17 @@ static void __init vpe_local_setup(unsigned int numvpes)
}
}
+unsigned int gic_compare_int(void)
+{
+ unsigned int pending;
+
+ GICREAD(GIC_REG(VPE_LOCAL, GIC_VPE_PEND), pending);
+ if (pending & GIC_VPE_PEND_CMP_MSK)
+ return 1;
+ else
+ return 0;
+}
+
unsigned int gic_get_int(void)
{
unsigned int i;
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