diff options
author | Marc Zyngier <marc.zyngier@arm.com> | 2016-01-28 14:24:39 +0000 |
---|---|---|
committer | Marc Zyngier <marc.zyngier@arm.com> | 2016-02-29 18:34:18 +0000 |
commit | 6d50d54cd80cb60d701e70fb0633250115606459 (patch) | |
tree | 9a63ecd9ac770fc4410200ad205e79bfafab1f46 /arch/arm64/kvm/hyp | |
parent | 13720a56edbd8164fbfa251067dea9776e09f54b (diff) |
arm64: KVM: Move vgic-v2 and timer save/restore to virt/kvm/arm/hyp
We already have virt/kvm/arm/ containing timer and vgic stuff.
Add yet another subdirectory to contain the hyp-specific files
(timer and vgic again).
Acked-by: Christoffer Dall <christoffer.dall@linaro.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Diffstat (limited to 'arch/arm64/kvm/hyp')
-rw-r--r-- | arch/arm64/kvm/hyp/Makefile | 7 | ||||
-rw-r--r-- | arch/arm64/kvm/hyp/timer-sr.c | 69 | ||||
-rw-r--r-- | arch/arm64/kvm/hyp/vgic-v2-sr.c | 82 |
3 files changed, 5 insertions, 153 deletions
diff --git a/arch/arm64/kvm/hyp/Makefile b/arch/arm64/kvm/hyp/Makefile index 5326e664fd41..b6a8fc5ad1af 100644 --- a/arch/arm64/kvm/hyp/Makefile +++ b/arch/arm64/kvm/hyp/Makefile @@ -2,9 +2,12 @@ # Makefile for Kernel-based Virtual Machine module, HYP part # -obj-$(CONFIG_KVM_ARM_HOST) += vgic-v2-sr.o +KVM=../../../../virt/kvm + +obj-$(CONFIG_KVM_ARM_HOST) += $(KVM)/arm/hyp/vgic-v2-sr.o +obj-$(CONFIG_KVM_ARM_HOST) += $(KVM)/arm/hyp/timer-sr.o + obj-$(CONFIG_KVM_ARM_HOST) += vgic-v3-sr.o -obj-$(CONFIG_KVM_ARM_HOST) += timer-sr.o obj-$(CONFIG_KVM_ARM_HOST) += sysreg-sr.o obj-$(CONFIG_KVM_ARM_HOST) += debug-sr.o obj-$(CONFIG_KVM_ARM_HOST) += entry.o diff --git a/arch/arm64/kvm/hyp/timer-sr.c b/arch/arm64/kvm/hyp/timer-sr.c deleted file mode 100644 index ea00d69e7078..000000000000 --- a/arch/arm64/kvm/hyp/timer-sr.c +++ /dev/null @@ -1,69 +0,0 @@ -/* - * Copyright (C) 2012-2015 - ARM Ltd - * Author: Marc Zyngier <marc.zyngier@arm.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program. If not, see <http://www.gnu.org/licenses/>. - */ - -#include <clocksource/arm_arch_timer.h> -#include <linux/compiler.h> -#include <linux/kvm_host.h> - -#include <asm/kvm_hyp.h> - -/* vcpu is already in the HYP VA space */ -void __hyp_text __timer_save_state(struct kvm_vcpu *vcpu) -{ - struct kvm *kvm = kern_hyp_va(vcpu->kvm); - struct arch_timer_cpu *timer = &vcpu->arch.timer_cpu; - u64 val; - - if (kvm->arch.timer.enabled) { - timer->cntv_ctl = read_sysreg_el0(cntv_ctl); - timer->cntv_cval = read_sysreg_el0(cntv_cval); - } - - /* Disable the virtual timer */ - write_sysreg_el0(0, cntv_ctl); - - /* Allow physical timer/counter access for the host */ - val = read_sysreg(cnthctl_el2); - val |= CNTHCTL_EL1PCTEN | CNTHCTL_EL1PCEN; - write_sysreg(val, cnthctl_el2); - - /* Clear cntvoff for the host */ - write_sysreg(0, cntvoff_el2); -} - -void __hyp_text __timer_restore_state(struct kvm_vcpu *vcpu) -{ - struct kvm *kvm = kern_hyp_va(vcpu->kvm); - struct arch_timer_cpu *timer = &vcpu->arch.timer_cpu; - u64 val; - - /* - * Disallow physical timer access for the guest - * Physical counter access is allowed - */ - val = read_sysreg(cnthctl_el2); - val &= ~CNTHCTL_EL1PCEN; - val |= CNTHCTL_EL1PCTEN; - write_sysreg(val, cnthctl_el2); - - if (kvm->arch.timer.enabled) { - write_sysreg(kvm->arch.timer.cntvoff, cntvoff_el2); - write_sysreg_el0(timer->cntv_cval, cntv_cval); - isb(); - write_sysreg_el0(timer->cntv_ctl, cntv_ctl); - } -} diff --git a/arch/arm64/kvm/hyp/vgic-v2-sr.c b/arch/arm64/kvm/hyp/vgic-v2-sr.c deleted file mode 100644 index 9514a7d90d71..000000000000 --- a/arch/arm64/kvm/hyp/vgic-v2-sr.c +++ /dev/null @@ -1,82 +0,0 @@ -/* - * Copyright (C) 2012-2015 - ARM Ltd - * Author: Marc Zyngier <marc.zyngier@arm.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program. If not, see <http://www.gnu.org/licenses/>. - */ - -#include <linux/compiler.h> -#include <linux/irqchip/arm-gic.h> -#include <linux/kvm_host.h> - -#include <asm/kvm_hyp.h> - -/* vcpu is already in the HYP VA space */ -void __hyp_text __vgic_v2_save_state(struct kvm_vcpu *vcpu) -{ - struct kvm *kvm = kern_hyp_va(vcpu->kvm); - struct vgic_v2_cpu_if *cpu_if = &vcpu->arch.vgic_cpu.vgic_v2; - struct vgic_dist *vgic = &kvm->arch.vgic; - void __iomem *base = kern_hyp_va(vgic->vctrl_base); - u32 eisr0, eisr1, elrsr0, elrsr1; - int i, nr_lr; - - if (!base) - return; - - nr_lr = vcpu->arch.vgic_cpu.nr_lr; - cpu_if->vgic_vmcr = readl_relaxed(base + GICH_VMCR); - cpu_if->vgic_misr = readl_relaxed(base + GICH_MISR); - eisr0 = readl_relaxed(base + GICH_EISR0); - elrsr0 = readl_relaxed(base + GICH_ELRSR0); - if (unlikely(nr_lr > 32)) { - eisr1 = readl_relaxed(base + GICH_EISR1); - elrsr1 = readl_relaxed(base + GICH_ELRSR1); - } else { - eisr1 = elrsr1 = 0; - } -#ifdef CONFIG_CPU_BIG_ENDIAN - cpu_if->vgic_eisr = ((u64)eisr0 << 32) | eisr1; - cpu_if->vgic_elrsr = ((u64)elrsr0 << 32) | elrsr1; -#else - cpu_if->vgic_eisr = ((u64)eisr1 << 32) | eisr0; - cpu_if->vgic_elrsr = ((u64)elrsr1 << 32) | elrsr0; -#endif - cpu_if->vgic_apr = readl_relaxed(base + GICH_APR); - - writel_relaxed(0, base + GICH_HCR); - - for (i = 0; i < nr_lr; i++) - cpu_if->vgic_lr[i] = readl_relaxed(base + GICH_LR0 + (i * 4)); -} - -/* vcpu is already in the HYP VA space */ -void __hyp_text __vgic_v2_restore_state(struct kvm_vcpu *vcpu) -{ - struct kvm *kvm = kern_hyp_va(vcpu->kvm); - struct vgic_v2_cpu_if *cpu_if = &vcpu->arch.vgic_cpu.vgic_v2; - struct vgic_dist *vgic = &kvm->arch.vgic; - void __iomem *base = kern_hyp_va(vgic->vctrl_base); - int i, nr_lr; - - if (!base) - return; - - writel_relaxed(cpu_if->vgic_hcr, base + GICH_HCR); - writel_relaxed(cpu_if->vgic_vmcr, base + GICH_VMCR); - writel_relaxed(cpu_if->vgic_apr, base + GICH_APR); - - nr_lr = vcpu->arch.vgic_cpu.nr_lr; - for (i = 0; i < nr_lr; i++) - writel_relaxed(cpu_if->vgic_lr[i], base + GICH_LR0 + (i * 4)); -} |