提交 63000dd8 编写于 作者: M Marc Zyngier

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.
Tested-by: NAlexander Graf <agraf@suse.de>
Acked-by: NDavid Daney <david.daney@cavium.com>
Reviewed-by: NEric Auger <eric.auger@redhat.com>
Signed-off-by: NMarc Zyngier <marc.zyngier@arm.com>
Signed-off-by: NChristoffer Dall <cdall@linaro.org>
上级 d251f67a
......@@ -118,6 +118,90 @@ static void __hyp_text __gic_v3_set_lr(u64 val, int lr)
}
}
static void __hyp_text __vgic_v3_write_ap0rn(u32 val, int n)
{
switch (n) {
case 0:
write_gicreg(val, ICH_AP0R0_EL2);
break;
case 1:
write_gicreg(val, ICH_AP0R1_EL2);
break;
case 2:
write_gicreg(val, ICH_AP0R2_EL2);
break;
case 3:
write_gicreg(val, ICH_AP0R3_EL2);
break;
}
}
static void __hyp_text __vgic_v3_write_ap1rn(u32 val, int n)
{
switch (n) {
case 0:
write_gicreg(val, ICH_AP1R0_EL2);
break;
case 1:
write_gicreg(val, ICH_AP1R1_EL2);
break;
case 2:
write_gicreg(val, ICH_AP1R2_EL2);
break;
case 3:
write_gicreg(val, ICH_AP1R3_EL2);
break;
}
}
static u32 __hyp_text __vgic_v3_read_ap0rn(int n)
{
u32 val;
switch (n) {
case 0:
val = read_gicreg(ICH_AP0R0_EL2);
break;
case 1:
val = read_gicreg(ICH_AP0R1_EL2);
break;
case 2:
val = read_gicreg(ICH_AP0R2_EL2);
break;
case 3:
val = read_gicreg(ICH_AP0R3_EL2);
break;
default:
unreachable();
}
return val;
}
static u32 __hyp_text __vgic_v3_read_ap1rn(int n)
{
u32 val;
switch (n) {
case 0:
val = read_gicreg(ICH_AP1R0_EL2);
break;
case 1:
val = read_gicreg(ICH_AP1R1_EL2);
break;
case 2:
val = read_gicreg(ICH_AP1R2_EL2);
break;
case 3:
val = read_gicreg(ICH_AP1R3_EL2);
break;
default:
unreachable();
}
return val;
}
void __hyp_text __vgic_v3_save_state(struct kvm_vcpu *vcpu)
{
struct vgic_v3_cpu_if *cpu_if = &vcpu->arch.vgic_cpu.vgic_v3;
......@@ -154,22 +238,22 @@ void __hyp_text __vgic_v3_save_state(struct kvm_vcpu *vcpu)
switch (nr_pre_bits) {
case 7:
cpu_if->vgic_ap0r[3] = read_gicreg(ICH_AP0R3_EL2);
cpu_if->vgic_ap0r[2] = read_gicreg(ICH_AP0R2_EL2);
cpu_if->vgic_ap0r[3] = __vgic_v3_read_ap0rn(3);
cpu_if->vgic_ap0r[2] = __vgic_v3_read_ap0rn(2);
case 6:
cpu_if->vgic_ap0r[1] = read_gicreg(ICH_AP0R1_EL2);
cpu_if->vgic_ap0r[1] = __vgic_v3_read_ap0rn(1);
default:
cpu_if->vgic_ap0r[0] = read_gicreg(ICH_AP0R0_EL2);
cpu_if->vgic_ap0r[0] = __vgic_v3_read_ap0rn(0);
}
switch (nr_pre_bits) {
case 7:
cpu_if->vgic_ap1r[3] = read_gicreg(ICH_AP1R3_EL2);
cpu_if->vgic_ap1r[2] = read_gicreg(ICH_AP1R2_EL2);
cpu_if->vgic_ap1r[3] = __vgic_v3_read_ap1rn(3);
cpu_if->vgic_ap1r[2] = __vgic_v3_read_ap1rn(2);
case 6:
cpu_if->vgic_ap1r[1] = read_gicreg(ICH_AP1R1_EL2);
cpu_if->vgic_ap1r[1] = __vgic_v3_read_ap1rn(1);
default:
cpu_if->vgic_ap1r[0] = read_gicreg(ICH_AP1R0_EL2);
cpu_if->vgic_ap1r[0] = __vgic_v3_read_ap1rn(0);
}
} else {
cpu_if->vgic_elrsr = 0xffff;
......@@ -224,22 +308,22 @@ void __hyp_text __vgic_v3_restore_state(struct kvm_vcpu *vcpu)
switch (nr_pre_bits) {
case 7:
write_gicreg(cpu_if->vgic_ap0r[3], ICH_AP0R3_EL2);
write_gicreg(cpu_if->vgic_ap0r[2], ICH_AP0R2_EL2);
__vgic_v3_write_ap0rn(cpu_if->vgic_ap0r[3], 3);
__vgic_v3_write_ap0rn(cpu_if->vgic_ap0r[2], 2);
case 6:
write_gicreg(cpu_if->vgic_ap0r[1], ICH_AP0R1_EL2);
__vgic_v3_write_ap0rn(cpu_if->vgic_ap0r[1], 1);
default:
write_gicreg(cpu_if->vgic_ap0r[0], ICH_AP0R0_EL2);
__vgic_v3_write_ap0rn(cpu_if->vgic_ap0r[0], 0);
}
switch (nr_pre_bits) {
case 7:
write_gicreg(cpu_if->vgic_ap1r[3], ICH_AP1R3_EL2);
write_gicreg(cpu_if->vgic_ap1r[2], ICH_AP1R2_EL2);
__vgic_v3_write_ap1rn(cpu_if->vgic_ap1r[3], 3);
__vgic_v3_write_ap1rn(cpu_if->vgic_ap1r[2], 2);
case 6:
write_gicreg(cpu_if->vgic_ap1r[1], ICH_AP1R1_EL2);
__vgic_v3_write_ap1rn(cpu_if->vgic_ap1r[1], 1);
default:
write_gicreg(cpu_if->vgic_ap1r[0], ICH_AP1R0_EL2);
__vgic_v3_write_ap1rn(cpu_if->vgic_ap1r[0], 0);
}
for (i = 0; i < used_lrs; i++)
......
Markdown is supported
0% .
You are about to add 0 people to the discussion. Proceed with caution.
先完成此消息的编辑!
想要评论请 注册