diff options
Diffstat (limited to 'hw/arm_gic.c')
| -rw-r--r-- | hw/arm_gic.c | 35 |
1 files changed, 20 insertions, 15 deletions
diff --git a/hw/arm_gic.c b/hw/arm_gic.c index 8dd8742..f3f3516 100644 --- a/hw/arm_gic.c +++ b/hw/arm_gic.c @@ -37,9 +37,8 @@ static const uint8_t gic_id[] = typedef struct gic_irq_state { - /* ??? The documentation seems to imply the enable bits are global, even - for per-cpu interrupts. This seems strange. */ - unsigned enabled:1; + /* The enable bits are only banked for per-cpu interrupts. */ + unsigned enabled:NCPU; unsigned pending:NCPU; unsigned active:NCPU; unsigned level:NCPU; @@ -54,9 +53,9 @@ typedef struct gic_irq_state #define NUM_CPU(s) 1 #endif -#define GIC_SET_ENABLED(irq) s->irq_state[irq].enabled = 1 -#define GIC_CLEAR_ENABLED(irq) s->irq_state[irq].enabled = 0 -#define GIC_TEST_ENABLED(irq) s->irq_state[irq].enabled +#define GIC_SET_ENABLED(irq, cm) s->irq_state[irq].enabled |= (cm) +#define GIC_CLEAR_ENABLED(irq, cm) s->irq_state[irq].enabled &= ~(cm) +#define GIC_TEST_ENABLED(irq, cm) ((s->irq_state[irq].enabled & (cm)) != 0) #define GIC_SET_PENDING(irq, cm) s->irq_state[irq].pending |= (cm) #define GIC_CLEAR_PENDING(irq, cm) s->irq_state[irq].pending &= ~(cm) #define GIC_TEST_PENDING(irq, cm) ((s->irq_state[irq].pending & (cm)) != 0) @@ -128,7 +127,7 @@ static void gic_update(gic_state *s) best_prio = 0x100; best_irq = 1023; for (irq = 0; irq < GIC_NIRQ; irq++) { - if (GIC_TEST_ENABLED(irq) && GIC_TEST_PENDING(irq, cm)) { + if (GIC_TEST_ENABLED(irq, cm) && GIC_TEST_PENDING(irq, cm)) { if (GIC_GET_PRIORITY(irq, cpu) < best_prio) { best_prio = GIC_GET_PRIORITY(irq, cpu); best_irq = irq; @@ -171,7 +170,7 @@ static void gic_set_irq(void *opaque, int irq, int level) if (level) { GIC_SET_LEVEL(irq, ALL_CPU_MASK); - if (GIC_TEST_TRIGGER(irq) || GIC_TEST_ENABLED(irq)) { + if (GIC_TEST_TRIGGER(irq) || GIC_TEST_ENABLED(irq, ALL_CPU_MASK)) { DPRINTF("Set %d pending mask %x\n", irq, GIC_TARGET(irq)); GIC_SET_PENDING(irq, GIC_TARGET(irq)); } @@ -221,7 +220,7 @@ static void gic_complete_irq(gic_state * s, int cpu, int irq) if (irq != 1023) { /* Mark level triggered interrupts as pending if they are still raised. */ - if (!GIC_TEST_TRIGGER(irq) && GIC_TEST_ENABLED(irq) + if (!GIC_TEST_TRIGGER(irq) && GIC_TEST_ENABLED(irq, cm) && GIC_TEST_LEVEL(irq, cm) && (GIC_TARGET(irq) & cm) != 0) { DPRINTF("Set %d pending mask %x\n", irq, cm); GIC_SET_PENDING(irq, cm); @@ -280,7 +279,7 @@ static uint32_t gic_dist_readb(void *opaque, target_phys_addr_t offset) goto bad_reg; res = 0; for (i = 0; i < 8; i++) { - if (GIC_TEST_ENABLED(irq + i)) { + if (GIC_TEST_ENABLED(irq + i, cm)) { res |= (1 << i); } } @@ -412,9 +411,12 @@ static void gic_dist_writeb(void *opaque, target_phys_addr_t offset, for (i = 0; i < 8; i++) { if (value & (1 << i)) { int mask = (irq < 32) ? (1 << cpu) : GIC_TARGET(irq); - if (!GIC_TEST_ENABLED(irq + i)) + int cm = (irq < 32) ? (1 << cpu) : ALL_CPU_MASK; + + if (!GIC_TEST_ENABLED(irq + i, cm)) { DPRINTF("Enabled IRQ %d\n", irq + i); - GIC_SET_ENABLED(irq + i); + } + GIC_SET_ENABLED(irq + i, cm); /* If a raised level triggered IRQ enabled then mark is as pending. */ if (GIC_TEST_LEVEL(irq + i, mask) @@ -433,9 +435,12 @@ static void gic_dist_writeb(void *opaque, target_phys_addr_t offset, value = 0; for (i = 0; i < 8; i++) { if (value & (1 << i)) { - if (GIC_TEST_ENABLED(irq + i)) + int cm = (irq < 32) ? (1 << cpu) : ALL_CPU_MASK; + + if (GIC_TEST_ENABLED(irq + i, cm)) { DPRINTF("Disabled IRQ %d\n", irq + i); - GIC_CLEAR_ENABLED(irq + i); + } + GIC_CLEAR_ENABLED(irq + i, cm); } } } else if (offset < 0x280) { @@ -638,7 +643,7 @@ static void gic_reset(gic_state *s) #endif } for (i = 0; i < 16; i++) { - GIC_SET_ENABLED(i); + GIC_SET_ENABLED(i, ALL_CPU_MASK); GIC_SET_TRIGGER(i); } #ifdef NVIC |
