[Qemu-devel] [PATCH 4/5] hw: arm_gic: Support setting/getting binary point reg

[Christoffer Dall <christoffer.dall@linaro.org>]

Add a binary_point field to the gic emulation structure and support
setting/getting this register now when we have it.  We don't actually
support interrupt grouping yet, oh well.

Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
---
 hw/intc/arm_gic.c        |    5 ++---
 hw/intc/arm_gic_common.c |    1 +
 hw/intc/gic_internal.h   |    3 +++
 3 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/hw/intc/arm_gic.c b/hw/intc/arm_gic.c
index 4da534f..cb2004d 100644
--- a/hw/intc/arm_gic.c
+++ b/hw/intc/arm_gic.c
@@ -568,8 +568,7 @@ static uint32_t gic_cpu_read(GICState *s, int cpu, int offset)
     case 0x04: /* Priority mask */
         return s->priority_mask[cpu];
     case 0x08: /* Binary Point */
-        /* ??? Not implemented.  */
-        return 0;
+        return s->binary_point[0][cpu];
     case 0x0c: /* Acknowledge */
         value = gic_acknowledge_irq(s, cpu);
         value |= (GIC_SGI_SRC(value, cpu) & 0x7) << 10;
@@ -596,7 +595,7 @@ static void gic_cpu_write(GICState *s, int cpu, int offset, uint32_t value)
         s->priority_mask[cpu] = (value & 0xff);
         break;
     case 0x08: /* Binary Point */
-        /* ??? Not implemented.  */
+        s->binary_point[0][cpu] = (value & 0x7);
         break;
     case 0x10: /* End Of Interrupt */
         return gic_complete_irq(s, cpu, value & 0x3ff);
diff --git a/hw/intc/arm_gic_common.c b/hw/intc/arm_gic_common.c
index 7a1c9e5..a50ded2 100644
--- a/hw/intc/arm_gic_common.c
+++ b/hw/intc/arm_gic_common.c
@@ -76,6 +76,7 @@ static const VMStateDescription vmstate_gic = {
         VMSTATE_UINT16_ARRAY(running_irq, GICState, NCPU),
         VMSTATE_UINT16_ARRAY(running_priority, GICState, NCPU),
         VMSTATE_UINT16_ARRAY(current_pending, GICState, NCPU),
+        VMSTATE_UINT8_2DARRAY(binary_point, GICState, 2, NCPU),
         VMSTATE_END_OF_LIST()
     }
 };
diff --git a/hw/intc/gic_internal.h b/hw/intc/gic_internal.h
index 6f04885..424a41f 100644
--- a/hw/intc/gic_internal.h
+++ b/hw/intc/gic_internal.h
@@ -98,6 +98,9 @@ typedef struct GICState {
     uint16_t running_priority[NCPU];
     uint16_t current_pending[NCPU];
 
+    /* these registers are mainly used for save/restore of KVM state */
+    uint8_t  binary_point[2][NCPU]; /* [0]: group 0, [1]: group 1 */
+
     uint32_t num_cpu;
 
     MemoryRegion iomem; /* Distributor */
-- 
1.7.10.4