diff options
Diffstat (limited to 'hw/intc/arm_gicv3_redist.c')
| -rw-r--r-- | hw/intc/arm_gicv3_redist.c | 40 |
1 files changed, 22 insertions, 18 deletions
diff --git a/hw/intc/arm_gicv3_redist.c b/hw/intc/arm_gicv3_redist.c index 7072bfcbb1..424e7e28a8 100644 --- a/hw/intc/arm_gicv3_redist.c +++ b/hw/intc/arm_gicv3_redist.c @@ -425,22 +425,24 @@ static MemTxResult gicr_writell(GICv3CPUState *cs, hwaddr offset, MemTxResult gicv3_redist_read(void *opaque, hwaddr offset, uint64_t *data, unsigned size, MemTxAttrs attrs) { - GICv3State *s = opaque; + GICv3RedistRegion *region = opaque; + GICv3State *s = region->gic; GICv3CPUState *cs; MemTxResult r; int cpuidx; assert((offset & (size - 1)) == 0); - /* This region covers all the redistributor pages; there are - * (for GICv3) two 64K pages per CPU. At the moment they are - * all contiguous (ie in this one region), though we might later - * want to allow splitting of redistributor pages into several - * blocks so we can support more CPUs. + /* + * There are (for GICv3) two 64K redistributor pages per CPU. + * In some cases the redistributor pages for all CPUs are not + * contiguous (eg on the virt board they are split into two + * parts if there are too many CPUs to all fit in the same place + * in the memory map); if so then the GIC has multiple MemoryRegions + * for the redistributors. */ - cpuidx = offset / 0x20000; - offset %= 0x20000; - assert(cpuidx < s->num_cpu); + cpuidx = region->cpuidx + offset / GICV3_REDIST_SIZE; + offset %= GICV3_REDIST_SIZE; cs = &s->cpu[cpuidx]; @@ -482,22 +484,24 @@ MemTxResult gicv3_redist_read(void *opaque, hwaddr offset, uint64_t *data, MemTxResult gicv3_redist_write(void *opaque, hwaddr offset, uint64_t data, unsigned size, MemTxAttrs attrs) { - GICv3State *s = opaque; + GICv3RedistRegion *region = opaque; + GICv3State *s = region->gic; GICv3CPUState *cs; MemTxResult r; int cpuidx; assert((offset & (size - 1)) == 0); - /* This region covers all the redistributor pages; there are - * (for GICv3) two 64K pages per CPU. At the moment they are - * all contiguous (ie in this one region), though we might later - * want to allow splitting of redistributor pages into several - * blocks so we can support more CPUs. + /* + * There are (for GICv3) two 64K redistributor pages per CPU. + * In some cases the redistributor pages for all CPUs are not + * contiguous (eg on the virt board they are split into two + * parts if there are too many CPUs to all fit in the same place + * in the memory map); if so then the GIC has multiple MemoryRegions + * for the redistributors. */ - cpuidx = offset / 0x20000; - offset %= 0x20000; - assert(cpuidx < s->num_cpu); + cpuidx = region->cpuidx + offset / GICV3_REDIST_SIZE; + offset %= GICV3_REDIST_SIZE; cs = &s->cpu[cpuidx]; |