This patch is ported to xen from linux commit
63000dd8006dc987db31ba670edc23142ea91e01
KVM: arm/arm64: vgic-v3: Add accessors for the ICH_APxRn_EL2 registers
As we're about to access the Active Priority registers a lot more,
let's define accessors that take the register number as a parameter.
This patch only has accessors, it does not modify the vgic code.
Signed-off-by: Manish Jaggi <manish.ja...@cavium.com>
diff --git a/xen/arch/arm/arm64/vgic-v3-sr.c b/xen/arch/arm/arm64/vgic-v3-sr.c
index b49c53d1c5..eea087902c 100644
--- a/xen/arch/arm/arm64/vgic-v3-sr.c
+++ b/xen/arch/arm/arm64/vgic-v3-sr.c
@@ -39,6 +39,99 @@ static void vgic_v3_write_vmcr(uint32_t vmcr)
WRITE_SYSREG32(vmcr, ICH_VMCR_EL2);
}
+static void vgic_v3_write_ap0rn(uint32_t val, int n)
+{
+ switch (n)
+ {
+ case 0:
+ WRITE_SYSREG32(val, ICH_AP0R0_EL2);
+ break;
+ case 1:
+ WRITE_SYSREG32(val, ICH_AP0R1_EL2);
+ break;
+ case 2:
+ WRITE_SYSREG32(val, ICH_AP0R2_EL2);
+ break;
+ case 3:
+ WRITE_SYSREG32(val, ICH_AP0R3_EL2);
+ break;
+ default:
+ unreachable();
+ }
+}
+
+static void vgic_v3_write_ap1rn(uint32_t val, int n)
+{
+ switch (n)
+ {
+ case 0:
+ WRITE_SYSREG32(val, ICH_AP1R0_EL2);
+ break;
+ case 1:
+ WRITE_SYSREG32(val, ICH_AP1R1_EL2);
+ break;
+ case 2:
+ WRITE_SYSREG32(val, ICH_AP1R2_EL2);
+ break;
+ case 3:
+ WRITE_SYSREG32(val, ICH_AP1R3_EL2);
+ break;
+ default:
+ unreachable();
+ }
+}
+
+static uint32_t vgic_v3_read_ap0rn(int n)
+{
+ uint32_t val;
+
+ switch (n)
+ {
+ case 0:
+ val = READ_SYSREG32(ICH_AP0R0_EL2);
+ break;
+ case 1:
+ val = READ_SYSREG32(ICH_AP0R1_EL2);
+ break;
+ case 2:
+ val = READ_SYSREG32(ICH_AP0R2_EL2);
+ break;
+ case 3:
+ val = READ_SYSREG32(ICH_AP0R3_EL2);
+ break;
+ default:
+ unreachable();
+ }
+
+ return val;
+}
+
+static uint32_t vgic_v3_read_ap1rn(int n)
+{
+ uint32_t val;
+
+ switch (n)
+ {
+ case 0:
+ val = READ_SYSREG32(ICH_AP1R0_EL2);
+ break;
+ case 1:
+ val = READ_SYSREG32(ICH_AP1R1_EL2);
+ break;
+ case 2:
+ val = READ_SYSREG32(ICH_AP1R2_EL2);
+ break;
+ case 3:
+ val = READ_SYSREG32(ICH_AP1R3_EL2);
+ break;
+ default:
+ unreachable();
+ }
+
+ return val;
+}
+
+
static int vgic_v3_bpr_min(void)
{
/* See Pseudocode for VPriorityGroup */
--
2.14.1
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