| b.liu | e958203 | 2025-04-17 19:18:16 +0800 | [diff] [blame^] | 1 | // SPDX-License-Identifier: GPL-2.0-only |
| 2 | /* |
| 3 | * Original code: |
| 4 | * Copyright (C) 2012 - Virtual Open Systems and Columbia University |
| 5 | * Author: Christoffer Dall <c.dall@virtualopensystems.com> |
| 6 | * |
| 7 | * Mostly rewritten in C by Marc Zyngier <marc.zyngier@arm.com> |
| 8 | */ |
| 9 | |
| 10 | #include <asm/kvm_hyp.h> |
| 11 | |
| 12 | static u64 *cp15_64(struct kvm_cpu_context *ctxt, int idx) |
| 13 | { |
| 14 | return (u64 *)(ctxt->cp15 + idx); |
| 15 | } |
| 16 | |
| 17 | void __hyp_text __sysreg_save_state(struct kvm_cpu_context *ctxt) |
| 18 | { |
| 19 | ctxt->cp15[c0_CSSELR] = read_sysreg(CSSELR); |
| 20 | ctxt->cp15[c1_SCTLR] = read_sysreg(SCTLR); |
| 21 | ctxt->cp15[c1_CPACR] = read_sysreg(CPACR); |
| 22 | *cp15_64(ctxt, c2_TTBR0) = read_sysreg(TTBR0); |
| 23 | *cp15_64(ctxt, c2_TTBR1) = read_sysreg(TTBR1); |
| 24 | ctxt->cp15[c2_TTBCR] = read_sysreg(TTBCR); |
| 25 | ctxt->cp15[c3_DACR] = read_sysreg(DACR); |
| 26 | ctxt->cp15[c5_DFSR] = read_sysreg(DFSR); |
| 27 | ctxt->cp15[c5_IFSR] = read_sysreg(IFSR); |
| 28 | ctxt->cp15[c5_ADFSR] = read_sysreg(ADFSR); |
| 29 | ctxt->cp15[c5_AIFSR] = read_sysreg(AIFSR); |
| 30 | ctxt->cp15[c6_DFAR] = read_sysreg(DFAR); |
| 31 | ctxt->cp15[c6_IFAR] = read_sysreg(IFAR); |
| 32 | *cp15_64(ctxt, c7_PAR) = read_sysreg(PAR); |
| 33 | ctxt->cp15[c10_PRRR] = read_sysreg(PRRR); |
| 34 | ctxt->cp15[c10_NMRR] = read_sysreg(NMRR); |
| 35 | ctxt->cp15[c10_AMAIR0] = read_sysreg(AMAIR0); |
| 36 | ctxt->cp15[c10_AMAIR1] = read_sysreg(AMAIR1); |
| 37 | ctxt->cp15[c12_VBAR] = read_sysreg(VBAR); |
| 38 | ctxt->cp15[c13_CID] = read_sysreg(CID); |
| 39 | ctxt->cp15[c13_TID_URW] = read_sysreg(TID_URW); |
| 40 | ctxt->cp15[c13_TID_URO] = read_sysreg(TID_URO); |
| 41 | ctxt->cp15[c13_TID_PRIV] = read_sysreg(TID_PRIV); |
| 42 | ctxt->cp15[c14_CNTKCTL] = read_sysreg(CNTKCTL); |
| 43 | } |
| 44 | |
| 45 | void __hyp_text __sysreg_restore_state(struct kvm_cpu_context *ctxt) |
| 46 | { |
| 47 | write_sysreg(ctxt->cp15[c0_MPIDR], VMPIDR); |
| 48 | write_sysreg(ctxt->cp15[c0_CSSELR], CSSELR); |
| 49 | write_sysreg(ctxt->cp15[c1_SCTLR], SCTLR); |
| 50 | write_sysreg(ctxt->cp15[c1_CPACR], CPACR); |
| 51 | write_sysreg(*cp15_64(ctxt, c2_TTBR0), TTBR0); |
| 52 | write_sysreg(*cp15_64(ctxt, c2_TTBR1), TTBR1); |
| 53 | write_sysreg(ctxt->cp15[c2_TTBCR], TTBCR); |
| 54 | write_sysreg(ctxt->cp15[c3_DACR], DACR); |
| 55 | write_sysreg(ctxt->cp15[c5_DFSR], DFSR); |
| 56 | write_sysreg(ctxt->cp15[c5_IFSR], IFSR); |
| 57 | write_sysreg(ctxt->cp15[c5_ADFSR], ADFSR); |
| 58 | write_sysreg(ctxt->cp15[c5_AIFSR], AIFSR); |
| 59 | write_sysreg(ctxt->cp15[c6_DFAR], DFAR); |
| 60 | write_sysreg(ctxt->cp15[c6_IFAR], IFAR); |
| 61 | write_sysreg(*cp15_64(ctxt, c7_PAR), PAR); |
| 62 | write_sysreg(ctxt->cp15[c10_PRRR], PRRR); |
| 63 | write_sysreg(ctxt->cp15[c10_NMRR], NMRR); |
| 64 | write_sysreg(ctxt->cp15[c10_AMAIR0], AMAIR0); |
| 65 | write_sysreg(ctxt->cp15[c10_AMAIR1], AMAIR1); |
| 66 | write_sysreg(ctxt->cp15[c12_VBAR], VBAR); |
| 67 | write_sysreg(ctxt->cp15[c13_CID], CID); |
| 68 | write_sysreg(ctxt->cp15[c13_TID_URW], TID_URW); |
| 69 | write_sysreg(ctxt->cp15[c13_TID_URO], TID_URO); |
| 70 | write_sysreg(ctxt->cp15[c13_TID_PRIV], TID_PRIV); |
| 71 | write_sysreg(ctxt->cp15[c14_CNTKCTL], CNTKCTL); |
| 72 | } |