diff options
Diffstat (limited to 'arch/arm64/kvm/vgic-v2-switch.S')
| -rw-r--r-- | arch/arm64/kvm/vgic-v2-switch.S | 134 |
1 files changed, 0 insertions, 134 deletions
diff --git a/arch/arm64/kvm/vgic-v2-switch.S b/arch/arm64/kvm/vgic-v2-switch.S deleted file mode 100644 index 3f000712a85d..000000000000 --- a/arch/arm64/kvm/vgic-v2-switch.S +++ /dev/null @@ -1,134 +0,0 @@ -/* - * Copyright (C) 2012,2013 - 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/linkage.h> -#include <linux/irqchip/arm-gic.h> - -#include <asm/assembler.h> -#include <asm/memory.h> -#include <asm/asm-offsets.h> -#include <asm/kvm.h> -#include <asm/kvm_asm.h> -#include <asm/kvm_arm.h> -#include <asm/kvm_mmu.h> - - .text - .pushsection .hyp.text, "ax" - -/* - * Save the VGIC CPU state into memory - * x0: Register pointing to VCPU struct - * Do not corrupt x1!!! - */ -ENTRY(__save_vgic_v2_state) -__save_vgic_v2_state: - /* Get VGIC VCTRL base into x2 */ - ldr x2, [x0, #VCPU_KVM] - kern_hyp_va x2 - ldr x2, [x2, #KVM_VGIC_VCTRL] - kern_hyp_va x2 - cbz x2, 2f // disabled - - /* Compute the address of struct vgic_cpu */ - add x3, x0, #VCPU_VGIC_CPU - - /* Save all interesting registers */ - ldr w5, [x2, #GICH_VMCR] - ldr w6, [x2, #GICH_MISR] - ldr w7, [x2, #GICH_EISR0] - ldr w8, [x2, #GICH_EISR1] - ldr w9, [x2, #GICH_ELRSR0] - ldr w10, [x2, #GICH_ELRSR1] - ldr w11, [x2, #GICH_APR] -CPU_BE( rev w5, w5 ) -CPU_BE( rev w6, w6 ) -CPU_BE( rev w7, w7 ) -CPU_BE( rev w8, w8 ) -CPU_BE( rev w9, w9 ) -CPU_BE( rev w10, w10 ) -CPU_BE( rev w11, w11 ) - - str w5, [x3, #VGIC_V2_CPU_VMCR] - str w6, [x3, #VGIC_V2_CPU_MISR] -CPU_LE( str w7, [x3, #VGIC_V2_CPU_EISR] ) -CPU_LE( str w8, [x3, #(VGIC_V2_CPU_EISR + 4)] ) -CPU_LE( str w9, [x3, #VGIC_V2_CPU_ELRSR] ) -CPU_LE( str w10, [x3, #(VGIC_V2_CPU_ELRSR + 4)] ) -CPU_BE( str w7, [x3, #(VGIC_V2_CPU_EISR + 4)] ) -CPU_BE( str w8, [x3, #VGIC_V2_CPU_EISR] ) -CPU_BE( str w9, [x3, #(VGIC_V2_CPU_ELRSR + 4)] ) -CPU_BE( str w10, [x3, #VGIC_V2_CPU_ELRSR] ) - str w11, [x3, #VGIC_V2_CPU_APR] - - /* Clear GICH_HCR */ - str wzr, [x2, #GICH_HCR] - - /* Save list registers */ - add x2, x2, #GICH_LR0 - ldr w4, [x3, #VGIC_CPU_NR_LR] - add x3, x3, #VGIC_V2_CPU_LR -1: ldr w5, [x2], #4 -CPU_BE( rev w5, w5 ) - str w5, [x3], #4 - sub w4, w4, #1 - cbnz w4, 1b -2: - ret -ENDPROC(__save_vgic_v2_state) - -/* - * Restore the VGIC CPU state from memory - * x0: Register pointing to VCPU struct - */ -ENTRY(__restore_vgic_v2_state) -__restore_vgic_v2_state: - /* Get VGIC VCTRL base into x2 */ - ldr x2, [x0, #VCPU_KVM] - kern_hyp_va x2 - ldr x2, [x2, #KVM_VGIC_VCTRL] - kern_hyp_va x2 - cbz x2, 2f // disabled - - /* Compute the address of struct vgic_cpu */ - add x3, x0, #VCPU_VGIC_CPU - - /* We only restore a minimal set of registers */ - ldr w4, [x3, #VGIC_V2_CPU_HCR] - ldr w5, [x3, #VGIC_V2_CPU_VMCR] - ldr w6, [x3, #VGIC_V2_CPU_APR] -CPU_BE( rev w4, w4 ) -CPU_BE( rev w5, w5 ) -CPU_BE( rev w6, w6 ) - - str w4, [x2, #GICH_HCR] - str w5, [x2, #GICH_VMCR] - str w6, [x2, #GICH_APR] - - /* Restore list registers */ - add x2, x2, #GICH_LR0 - ldr w4, [x3, #VGIC_CPU_NR_LR] - add x3, x3, #VGIC_V2_CPU_LR -1: ldr w5, [x3], #4 -CPU_BE( rev w5, w5 ) - str w5, [x2], #4 - sub w4, w4, #1 - cbnz w4, 1b -2: - ret -ENDPROC(__restore_vgic_v2_state) - - .popsection |