/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Macros for accessing system registers with older binutils.
*
* Copyright (C) 2014 ARM Ltd.
* Author: Catalin Marinas <[email protected]>
*/
#ifndef __ASM_SYSREG_H
#define __ASM_SYSREG_H
#include <linux/bits.h>
#include <linux/stringify.h>
#include <linux/kasan-tags.h>
#include <asm/gpr-num.h>
/*
* ARMv8 ARM reserves the following encoding for system registers:
* (Ref: ARMv8 ARM, Section: "System instruction class encoding overview",
* C5.2, version:ARM DDI 0487A.f)
* [20-19] : Op0
* [18-16] : Op1
* [15-12] : CRn
* [11-8] : CRm
* [7-5] : Op2
*/
#define Op0_shift 19
#define Op0_mask 0x3
#define Op1_shift 16
#define Op1_mask 0x7
#define CRn_shift 12
#define CRn_mask 0xf
#define CRm_shift 8
#define CRm_mask 0xf
#define Op2_shift 5
#define Op2_mask 0x7
#define sys_reg(op0, op1, crn, crm, op2) \
(((op0) << Op0_shift) | ((op1) << Op1_shift) | \
((crn) << CRn_shift) | ((crm) << CRm_shift) | \
((op2) << Op2_shift))
#define sys_insn sys_reg
#define sys_reg_Op0(id) (((id) >> Op0_shift) & Op0_mask)
#define sys_reg_Op1(id) (((id) >> Op1_shift) & Op1_mask)
#define sys_reg_CRn(id) (((id) >> CRn_shift) & CRn_mask)
#define sys_reg_CRm(id) (((id) >> CRm_shift) & CRm_mask)
#define sys_reg_Op2(id) (((id) >> Op2_shift) & Op2_mask)
#ifndef CONFIG_BROKEN_GAS_INST
#ifdef __ASSEMBLY__
// The space separator is omitted so that __emit_inst(x) can be parsed as
// either an assembler directive or an assembler macro argument.
#define __emit_inst(x) .inst(x)
#else
#define __emit_inst(x) ".inst " __stringify((x)) "\n\t"
#endif
#else /* CONFIG_BROKEN_GAS_INST */
#ifndef CONFIG_CPU_BIG_ENDIAN
#define __INSTR_BSWAP(x) (x)
#else /* CONFIG_CPU_BIG_ENDIAN */
#define __INSTR_BSWAP(x) ((((x) << 24) & 0xff000000) | \
(((x) << 8) & 0x00ff0000) | \
(((x) >> 8) & 0x0000ff00) | \
(((x) >> 24) & 0x000000ff))
#endif /* CONFIG_CPU_BIG_ENDIAN */
#ifdef __ASSEMBLY__
#define __emit_inst(x) .long __INSTR_BSWAP(x)
#else /* __ASSEMBLY__ */
#define __emit_inst(x) ".long " __stringify(__INSTR_BSWAP(x)) "\n\t"
#endif /* __ASSEMBLY__ */
#endif /* CONFIG_BROKEN_GAS_INST */
/*
* Instructions for modifying PSTATE fields.
* As per Arm ARM for v8-A, Section "C.5.1.3 op0 == 0b00, architectural hints,
* barriers and CLREX, and PSTATE access", ARM DDI 0487 C.a, system instructions
* for accessing PSTATE fields have the following encoding:
* Op0 = 0, CRn = 4
* Op1, Op2 encodes the PSTATE field modified and defines the constraints.
* CRm = Imm4 for the instruction.
* Rt = 0x1f
*/
#define pstate_field(op1, op2) ((op1) << Op1_shift | (op2) << Op2_shift)
#define PSTATE_Imm_shift CRm_shift
#define SET_PSTATE(x, r) __emit_inst(0xd500401f | PSTATE_ ## r | ((!!x) << PSTATE_Imm_shift))
#define PSTATE_PAN pstate_field(0, 4)
#define PSTATE_UAO pstate_field(0, 3)
#define PSTATE_SSBS pstate_field(3, 1)
#define PSTATE_DIT pstate_field(3, 2)
#define PSTATE_TCO pstate_field(3, 4)
#define SET_PSTATE_PAN(x) SET_PSTATE((x), PAN)
#define SET_PSTATE_UAO(x) SET_PSTATE((x), UAO)
#define SET_PSTATE_SSBS(x) SET_PSTATE((x), SSBS)
#define SET_PSTATE_DIT(x) SET_PSTATE((x), DIT)
#define SET_PSTATE_TCO(x) SET_PSTATE((x), TCO)
#define set_pstate_pan(x) asm volatile(SET_PSTATE_PAN(x))
#define set_pstate_uao(x) asm volatile(SET_PSTATE_UAO(x))
#define set_pstate_ssbs(x) asm volatile(SET_PSTATE_SSBS(x))
#define set_pstate_dit(x) asm volatile(SET_PSTATE_DIT(x))
#define __SYS_BARRIER_INSN(CRm, op2, Rt) \
__emit_inst(0xd5000000 | sys_insn(0, 3, 3, (CRm), (op2)) | ((Rt) & 0x1f))
#define SB_BARRIER_INSN __SYS_BARRIER_INSN(0, 7, 31)
#define SYS_DC_ISW sys_insn(1, 0, 7, 6, 2)
#define SYS_DC_IGSW sys_insn(1, 0, 7, 6, 4)
#define SYS_DC_IGDSW sys_insn(1, 0, 7, 6, 6)
#define SYS_DC_CSW sys_insn(1, 0, 7, 10, 2)
#define SYS_DC_CGSW sys_insn(1, 0, 7, 10, 4)
#define SYS_DC_CGDSW sys_insn(1, 0, 7, 10, 6)
#define SYS_DC_CISW sys_insn(1, 0, 7, 14, 2)
#define SYS_DC_CIGSW sys_insn(1, 0, 7, 14, 4)
#define SYS_DC_CIGDSW sys_insn(1, 0, 7, 14, 6)
/*
* Automatically generated definitions for system registers, the
* manual encodings below are in the process of being converted to
* come from here. The header relies on the definition of sys_reg()
* earlier in this file.
*/
#include "asm/sysreg-defs.h"
/*
* System registers, organised loosely by encoding but grouped together
* where the architected name contains an index. e.g. ID_MMFR<n>_EL1.
*/
#define SYS_SVCR_SMSTOP_SM_EL0 sys_reg(0, 3, 4, 2, 3)
#define SYS_SVCR_SMSTART_SM_EL0 sys_reg(0, 3, 4, 3, 3)
#define SYS_SVCR_SMSTOP_SMZA_EL0 sys_reg(0, 3, 4, 6, 3)
#define SYS_DBGBVRn_EL1(n) sys_reg(2, 0, 0, n, 4)
#define SYS_DBGBCRn_EL1(n) sys_reg(2, 0, 0, n, 5)
#define SYS_DBGWVRn_EL1(n) sys_reg(2, 0, 0, n, 6)
#define SYS_DBGWCRn_EL1(n) sys_reg(2, 0, 0, n, 7)
#define SYS_MDRAR_EL1 sys_reg(2, 0, 1, 0, 0)
#define SYS_OSLSR_EL1 sys_reg(2, 0, 1, 1, 4)
#define OSLSR_EL1_OSLM_MASK (BIT(3) | BIT(0))
#define OSLSR_EL1_OSLM_NI 0
#define OSLSR_EL1_OSLM_IMPLEMENTED BIT(3)
#define OSLSR_EL1_OSLK BIT(1)
#define SYS_OSDLR_EL1 sys_reg(2, 0, 1, 3, 4)
#define SYS_DBGPRCR_EL1 sys_reg(2, 0, 1, 4, 4)
#define SYS_DBGCLAIMSET_EL1 sys_reg(2, 0, 7, 8, 6)
#define SYS_DBGCLAIMCLR_EL1 sys_reg(2, 0, 7, 9, 6)
#define SYS_DBGAUTHSTATUS_EL1 sys_reg(2, 0, 7, 14, 6)
#define SYS_MDCCSR_EL0 sys_reg(2, 3, 0, 1, 0)
#define SYS_DBGDTR_EL0 sys_reg(2, 3, 0, 4, 0)
#define SYS_DBGDTRRX_EL0 sys_reg(2, 3, 0, 5, 0)
#define SYS_DBGDTRTX_EL0 sys_reg(2, 3, 0, 5, 0)
#define SYS_DBGVCR32_EL2 sys_reg(2, 4, 0, 7, 0)
#define SYS_MIDR_EL1 sys_reg(3, 0, 0, 0, 0)
#define SYS_MPIDR_EL1 sys_reg(3, 0, 0, 0, 5)
#define SYS_REVIDR_EL1 sys_reg(3, 0, 0, 0, 6)
#define SYS_ACTLR_EL1 sys_reg(3, 0, 1, 0, 1)
#define SYS_RGSR_EL1 sys_reg(3, 0, 1, 0, 5)
#define SYS_GCR_EL1 sys_reg(3, 0, 1, 0, 6)
#define SYS_TRFCR_EL1 sys_reg(3, 0, 1, 2, 1)
#define SYS_TCR_EL1 sys_reg(3, 0, 2, 0, 2)
#define SYS_APIAKEYLO_EL1 sys_reg(3, 0, 2, 1, 0)
#define SYS_APIAKEYHI_EL1 sys_reg(3, 0, 2, 1, 1)
#define SYS_APIBKEYLO_EL1 sys_reg(3, 0, 2, 1, 2)
#define SYS_APIBKEYHI_EL1 sys_reg(3, 0, 2, 1, 3)
#define SYS_APDAKEYLO_EL1 sys_reg(3, 0, 2, 2, 0)
#define SYS_APDAKEYHI_EL1 sys_reg(3, 0, 2, 2, 1)
#define SYS_APDBKEYLO_EL1 sys_reg(3, 0, 2, 2, 2)
#define SYS_APDBKEYHI_EL1 sys_reg(3, 0, 2, 2, 3)
#define SYS_APGAKEYLO_EL1 sys_reg(3, 0, 2, 3, 0)
#define SYS_APGAKEYHI_EL1 sys_reg(3, 0, 2, 3, 1)
#define SYS_SPSR_EL1 sys_reg(3, 0, 4, 0, 0)
#define SYS_ELR_EL1 sys_reg(3, 0, 4, 0, 1)
#define SYS_ICC_PMR_EL1 sys_reg(3, 0, 4, 6, 0)
#define SYS_AFSR0_EL1 sys_reg(3, 0, 5, 1, 0)
#define SYS_AFSR1_EL1 sys_reg(3, 0, 5, 1, 1)
#define SYS_ESR_EL1 sys_reg(3, 0, 5, 2, 0)
#define SYS_ERRIDR_EL1 sys_reg(3, 0, 5, 3, 0)
#define SYS_ERRSELR_EL1 sys_reg(3, 0, 5, 3, 1)
#define SYS_ERXFR_EL1 sys_reg(3, 0, 5, 4, 0)
#define SYS_ERXCTLR_EL1 sys_reg(3, 0, 5, 4, 1)
#define SYS_ERXSTATUS_EL1 sys_reg(3, 0, 5, 4, 2)
#define SYS_ERXADDR_EL1 sys_reg(3, 0, 5, 4, 3)
#define SYS_ERXMISC0_EL1 sys_reg(3, 0, 5, 5, 0)
#define SYS_ERXMISC1_EL1 sys_reg(3, 0, 5, 5, 1)
#define SYS_TFSR_EL1 sys_reg(3, 0, 5, 6, 0)
#define SYS_TFSRE0_EL1 sys_reg(3, 0, 5, 6, 1)
#define SYS_PAR_EL1 sys_reg(3, 0, 7, 4, 0)
#define SYS_PAR_EL1_F BIT(0)
#define SYS_PAR_EL1_FST GENMASK(6, 1)
/*** Statistical Profiling Extension ***/
#define PMSEVFR_EL1_RES0_IMP \
(GENMASK_ULL(47, 32) | GENMASK_ULL(23, 16) | GENMASK_ULL(11, 8) |\
BIT_ULL(6) | BIT_ULL(4) | BIT_ULL(2) | BIT_ULL(0))
#define PMSEVFR_EL1_RES0_V1P1 \
(PMSEVFR_EL1_RES0_IMP & ~(BIT_ULL(18) | BIT_ULL(17) | BIT_ULL(11)))
#define PMSEVFR_EL1_RES0_V1P2 \
(PMSEVFR_EL1_RES0_V1P1 & ~BIT_ULL(6))
/* Buffer error reporting */
#define PMBSR_EL1_FAULT_FSC_SHIFT PMBSR_EL1_MSS_SHIFT
#define PMBSR_EL1_FAULT_FSC_MASK PMBSR_EL1_MSS_MASK
#define PMBSR_EL1_BUF_BSC_SHIFT PMBSR_EL1_MSS_SHIFT
#define PMBSR_EL1_BUF_BSC_MASK PMBSR_EL1_MSS_MASK
#define PMBSR_EL1_BUF_BSC_FULL 0x1UL
/*** End of Statistical Profiling Extension ***/
#define TRBSR_EL1_BSC_MASK GENMASK(5, 0)
#define TRBSR_EL1_BSC_SHIFT 0
#define SYS_PMINTENSET_EL1 sys_reg(3, 0, 9, 14, 1)
#define SYS_PMINTENCLR_EL1 sys_reg(3, 0, 9, 14, 2)
#define SYS_PMMIR_EL1 sys_reg(3, 0, 9, 14, 6)
#define SYS_MAIR_EL1 sys_reg(3, 0, 10, 2, 0)
#define SYS_AMAIR_EL1 sys_reg(3, 0, 10, 3, 0)
#define SYS_VBAR_EL1 sys_reg(3, 0, 12, 0, 0)
#define SYS_DISR_EL1 sys_reg(3, 0, 12, 1, 1)
#define SYS_ICC_IAR0_EL1 sys_reg(3, 0, 12, 8, 0)
#define SYS_ICC_EOIR0_EL1 sys_reg(3, 0, 12, 8, 1)
#define SYS_ICC_HPPIR0_EL1 sys_reg(3, 0, 12, 8, 2)
#define SYS_ICC_BPR0_EL1 sys_reg(3, 0, 12, 8, 3)
#define SYS_ICC_AP0Rn_EL1(n) sys_reg(3, 0, 12, 8, 4 | n)
#define SYS_ICC_AP0R0_EL1 SYS_ICC_AP0Rn_EL1(0)
#define SYS_ICC_AP0R1_EL1 SYS_ICC_AP0Rn_EL1(1)
#define SYS_ICC_AP0R2_EL1 SYS_ICC_AP0Rn_EL1(2)
#define SYS_ICC_AP0R3_EL1 SYS_ICC_AP0Rn_EL1(3)
#define SYS_ICC_AP1Rn_EL1(n) sys_reg(3, 0, 12, 9, n)
#define SYS_ICC_AP1R0_EL1 SYS_ICC_AP1Rn_EL1(0)
#define SYS_ICC_AP1R1_EL1 SYS_ICC_AP1Rn_EL1(1)
#define SYS_ICC_AP1R2_EL1 SYS_ICC_AP1Rn_EL1(2)
#define SYS_ICC_AP1R3_EL1 SYS_ICC_AP1Rn_EL1(3)
#define SYS_ICC_DIR_EL1 sys_reg(3, 0, 12, 11, 1)
#define SYS_ICC_RPR_EL1 sys_reg(3, 0, 12, 11, 3)
#define SYS_ICC_SGI1R_EL1 sys_reg(3, 0, 12, 11, 5)
#define SYS_ICC_ASGI1R_EL1 sys_reg(3, 0, 12, 11, 6)
#define SYS_ICC_SGI0R_EL1 sys_reg(3, 0, 12, 11, 7)
#define SYS_ICC_IAR1_EL1 sys_reg(3, 0, 12, 12, 0)
#define SYS_ICC_EOIR1_EL1 sys_reg(3, 0, 12, 12, 1)
#define SYS_ICC_HPPIR1_EL1 sys_reg(3, 0, 12, 12, 2)
#define SYS_ICC_BPR1_EL1 sys_reg(3, 0, 12, 12, 3)
#define SYS_ICC_CTLR_EL1 sys_reg(3, 0, 12, 12, 4)
#define SYS_ICC_SRE_EL1 sys_reg(3, 0, 12, 12, 5)
#define SYS_ICC_IGRPEN0_EL1 sys_reg(3, 0, 12, 12, 6)
#define SYS_ICC_IGRPEN1_EL1 sys_reg(3, 0, 12, 12, 7)
#define SYS_CNTKCTL_EL1 sys_reg(3, 0, 14, 1, 0)
#define SYS_AIDR_EL1 sys_reg(3, 1, 0, 0, 7)
#define SYS_RNDR_EL0 sys_reg(3, 3, 2, 4, 0)
#define SYS_RNDRRS_EL0 sys_reg(3, 3, 2, 4, 1)
#define SYS_PMCR_EL0 sys_reg(3, 3, 9, 12, 0)
#define SYS_PMCNTENSET_EL0 sys_reg(3, 3, 9, 12, 1)
#define SYS_PMCNTENCLR_EL0 sys_reg(3, 3, 9, 12, 2)
#define SYS_PMOVSCLR_EL0 sys_reg(3, 3, 9, 12, 3)
#define SYS_PMSWINC_EL0 sys_reg(3, 3, 9, 12, 4)
#define SYS_PMSELR_EL0 sys_reg(3, 3, 9, 12, 5)
#define SYS_PMCEID0_EL0 sys_reg(3, 3, 9, 12, 6)
#define SYS_PMCEID1_EL0 sys_reg(3, 3, 9, 12, 7)
#define SYS_PMCCNTR_EL0 sys_reg(3, 3, 9, 13, 0)
#define SYS_PMXEVTYPER_EL0 sys_reg(3, 3, 9, 13, 1)
#define SYS_PMXEVCNTR_EL0 sys_reg(3, 3, 9, 13, 2)
#define SYS_PMUSERENR_EL0 sys_reg(3, 3, 9, 14, 0)
#define SYS_PMOVSSET_EL0 sys_reg(3, 3, 9, 14, 3)
#define SYS_TPIDR_EL0 sys_reg(3, 3, 13, 0, 2)
#define SYS_TPIDRRO_EL0 sys_reg(3, 3, 13, 0, 3)
#define SYS_TPIDR2_EL0 sys_reg(3, 3, 13, 0, 5)
#define SYS_SCXTNUM_EL0 sys_reg(3, 3, 13, 0, 7)
/* Definitions for system register interface to AMU for ARMv8.4 onwards */
#define SYS_AM_EL0(crm, op2) sys_reg(3, 3, 13, (crm), (op2))
#define SYS_AMCR_EL0 SYS_AM_EL0(2, 0)
#define SYS_AMCFGR_EL0 SYS_AM_EL0(2, 1)
#define SYS_AMCGCR_EL0 SYS_AM_EL0(2, 2)
#define SYS_AMUSERENR_EL0 SYS_AM_EL0(2, 3)
#define SYS_AMCNTENCLR0_EL0 SYS_AM_EL0(2, 4)
#define SYS_AMCNTENSET0_EL0 SYS_AM_EL0(2, 5)
#define SYS_AMCNTENCLR1_EL0 SYS_AM_EL0(3, 0)
#define SYS_AMCNTENSET1_EL0 SYS_AM_EL0(3, 1)
/*
* Group 0 of activity monitors (architected):
* op0 op1 CRn CRm op2
* Counter: 11 011 1101 010:n<3> n<2:0>
* Type: 11 011 1101 011:n<3> n<2:0>
* n: 0-15
*
* Group 1 of activity monitors (auxiliary):
* op0 op1 CRn CRm op2
* Counter: 11 011 1101 110:n<3> n<2:0>
* Type: 11 011 1101 111:n<3> n<2:0>
* n: 0-15
*/
#define SYS_AMEVCNTR0_EL0(n) SYS_AM_EL0(4 + ((n) >> 3), (n) & 7)
#define SYS_AMEVTYPER0_EL0(n) SYS_AM_EL0(6 + ((n) >> 3), (n) & 7)
#define SYS_AMEVCNTR1_EL0(n) SYS_AM_EL0(12 + ((n) >> 3), (n) & 7)
#define SYS_AMEVTYPER1_EL0(n) SYS_AM_EL0(14 + ((n) >> 3), (n) & 7)
/* AMU v1: Fixed (architecturally defined) activity monitors */
#define SYS_AMEVCNTR0_CORE_EL0 SYS_AMEVCNTR0_EL0(0)
#define SYS_AMEVCNTR0_CONST_EL0 SYS_AMEVCNTR0_EL0(1)
#define SYS_AMEVCNTR0_INST_RET_EL0 SYS_AMEVCNTR0_EL0(2)
#define SYS_AMEVCNTR0_MEM_STALL SYS_AMEVCNTR0_EL0(3)
#define SYS_CNTFRQ_EL0 sys_reg(3, 3, 14, 0, 0)
#define SYS_CNTPCT_EL0 sys_reg(3, 3, 14, 0, 1)
#define SYS_CNTPCTSS_EL0 sys_reg(3, 3, 14, 0, 5)
#define SYS_CNTVCTSS_EL0 sys_reg(3, 3, 14, 0, 6)
#define SYS_CNTP_TVAL_EL0 sys_reg(3, 3, 14, 2, 0)
#define SYS_CNTP_CTL_EL0 sys_reg(3, 3, 14, 2, 1)
#define SYS_CNTP_CVAL_EL0 sys_reg(3, 3, 14, 2, 2)
#define SYS_CNTV_CTL_EL0 sys_reg(3, 3, 14, 3, 1)
#define SYS_CNTV_CVAL_EL0 sys_reg(3, 3, 14, 3, 2)
#define SYS_AARCH32_CNTP_TVAL sys_reg(0, 0, 14, 2, 0)
#define SYS_AARCH32_CNTP_CTL sys_reg(0, 0, 14, 2, 1)
#define SYS_AARCH32_CNTPCT sys_reg(0, 0, 0, 14, 0)
#define SYS_AARCH32_CNTP_CVAL sys_reg(0, 2, 0, 14, 0)
#define SYS_AARCH32_CNTPCTSS sys_reg(0, 8, 0, 14, 0)
#define __PMEV_op2(n) ((n) & 0x7)
#define __CNTR_CRm(n) (0x8 | (((n) >> 3) & 0x3))
#define SYS_PMEVCNTRn_EL0(n) sys_reg(3, 3, 14, __CNTR_CRm(n), __PMEV_op2(n))
#define __TYPER_CRm(n) (0xc | (((n) >> 3) & 0x3))
#define SYS_PMEVTYPERn_EL0(n) sys_reg(3, 3, 14, __TYPER_CRm(n), __PMEV_op2(n))
#define SYS_PMCCFILTR_EL0 sys_reg(3, 3, 14, 15, 7)
#define SYS_VPIDR_EL2 sys_reg(3, 4, 0, 0, 0)
#define SYS_VMPIDR_EL2 sys_reg(3, 4, 0, 0, 5)
#define SYS_SCTLR_EL2 sys_reg(3, 4, 1, 0, 0)
#define SYS_ACTLR_EL2 sys_reg(3, 4, 1, 0, 1)
#define SYS_HCR_EL2 sys_reg(3, 4, 1, 1, 0)
#define SYS_MDCR_EL2 sys_reg(3, 4, 1, 1, 1)
#define SYS_CPTR_EL2 sys_reg(3, 4, 1, 1, 2)
#define SYS_HSTR_EL2 sys_reg(3, 4, 1, 1, 3)
#define SYS_HACR_EL2 sys_reg(3, 4, 1, 1, 7)
#define SYS_TTBR0_EL2 sys_reg(3, 4, 2, 0, 0)
#define SYS_TTBR1_EL2 sys_reg(3, 4, 2, 0, 1)
#define SYS_TCR_EL2 sys_reg(3, 4, 2, 0, 2)
#define SYS_VTTBR_EL2 sys_reg(3, 4, 2, 1, 0)
#define SYS_VTCR_EL2 sys_reg(3, 4, 2, 1, 2)
#define SYS_TRFCR_EL2 sys_reg(3, 4, 1, 2, 1)
#define SYS_HDFGRTR_EL2 sys_reg(3, 4, 3, 1, 4)
#define SYS_HDFGWTR_EL2 sys_reg(3, 4, 3, 1, 5)
#define SYS_HAFGRTR_EL2 sys_reg(3, 4, 3, 1, 6)
#define SYS_SPSR_EL2 sys_reg(3, 4, 4, 0, 0)
#define SYS_ELR_EL2 sys_reg(3, 4, 4, 0, 1)
#define SYS_SP_EL1 sys_reg(3, 4, 4, 1, 0)
#define SYS_IFSR32_EL2 sys_reg(3, 4, 5, 0, 1)
#define SYS_AFSR0_EL2 sys_reg(3, 4, 5, 1, 0)
#define SYS_AFSR1_EL2 sys_reg(3, 4, 5, 1, 1)
#define SYS_ESR_EL2 sys_reg(3, 4, 5, 2, 0)
#define SYS_VSESR_EL2 sys_reg(3, 4, 5, 2, 3)
#define SYS_FPEXC32_EL2 sys_reg(3, 4, 5, 3, 0)
#define SYS_TFSR_EL2 sys_reg(3, 4, 5, 6, 0)
#define SYS_FAR_EL2 sys_reg(3, 4, 6, 0, 0)
#define SYS_HPFAR_EL2 sys_reg(3, 4, 6, 0, 4)
#define SYS_MAIR_EL2 sys_reg(3, 4, 10, 2, 0)
#define SYS_AMAIR_EL2 sys_reg(3, 4, 10, 3, 0)
#define SYS_VBAR_EL2 sys_reg(3, 4, 12, 0, 0)
#define SYS_RVBAR_EL2 sys_reg(3, 4, 12, 0, 1)
#define SYS_RMR_EL2 sys_reg(3, 4, 12, 0, 2)
#define SYS_VDISR_EL2 sys_reg(3, 4, 12, 1, 1)
#define __SYS__AP0Rx_EL2(x) sys_reg(3, 4, 12, 8, x)
#define SYS_ICH_AP0R0_EL2 __SYS__AP0Rx_EL2(0)
#define SYS_ICH_AP0R1_EL2 __SYS__AP0Rx_EL2(1)
#define SYS_ICH_AP0R2_EL2 __SYS__AP0Rx_EL2(2)
#define SYS_ICH_AP0R3_EL2 __SYS__AP0Rx_EL2(3)
#define __SYS__AP1Rx_EL2(x) sys_reg(3, 4, 12, 9, x)
#define SYS_ICH_AP1R0_EL2 __SYS__AP1Rx_EL2(0)
#define SYS_ICH_AP1R1_EL2 __SYS__AP1Rx_EL2(1)
#define SYS_ICH_AP1R2_EL2 __SYS__AP1Rx_EL2(2)
#define SYS_ICH_AP1R3_EL2 __SYS__AP1Rx_EL2(3)
#define SYS_ICH_VSEIR_EL2 sys_reg(3, 4, 12, 9, 4)
#define SYS_ICC_SRE_EL2 sys_reg(3, 4, 12, 9, 5)
#define SYS_ICH_HCR_EL2 sys_reg(3, 4, 12, 11, 0)
#define SYS_ICH_VTR_EL2 sys_reg(3, 4, 12, 11, 1)
#define SYS_ICH_MISR_EL2 sys_reg(3, 4, 12, 11, 2)
#define SYS_ICH_EISR_EL2 sys_reg(3, 4, 12, 11, 3)
#define SYS_ICH_ELRSR_EL2 sys_reg(3, 4, 12, 11, 5)
#define SYS_ICH_VMCR_EL2 sys_reg(3, 4, 12, 11, 7)
#define __SYS__LR0_EL2(x) sys_reg(3, 4, 12, 12, x)
#define SYS_ICH_LR0_EL2 __SYS__LR0_EL2(0)
#define SYS_ICH_LR1_EL2 __SYS__LR0_EL2(1)
#define SYS_ICH_LR2_EL2 __SYS__LR0_EL2(2)
#define SYS_ICH_LR3_EL2 __SYS__LR0_EL2(3)
#define SYS_ICH_LR4_EL2 __SYS__LR0_EL2(4)
#define SYS_ICH_LR5_EL2 __SYS__LR0_EL2(5)
#define SYS_ICH_LR6_EL2 __SYS__LR0_EL2(6)
#define SYS_ICH_LR7_EL2 __SYS__LR0_EL2(7)
#define __SYS__LR8_EL2(x) sys_reg(3, 4, 12, 13, x)
#define SYS_ICH_LR8_EL2 __SYS__LR8_EL2(0)
#define SYS_ICH_LR9_EL2 __SYS__LR8_EL2(1)
#define SYS_ICH_LR10_EL2 __SYS__LR8_EL2(2)
#define SYS_ICH_LR11_EL2 __SYS__LR8_EL2(3)
#define SYS_ICH_LR12_EL2 __SYS__LR8_EL2(4)
#define SYS_ICH_LR13_EL2 __SYS__LR8_EL2(5)
#define SYS_ICH_LR14_EL2 __SYS__LR8_EL2(6)
#define SYS_ICH_LR15_EL2 __SYS__LR8_EL2(7)
#define SYS_CONTEXTIDR_EL2 sys_reg(3, 4, 13, 0, 1)
#define SYS_TPIDR_EL2 sys_reg(3, 4, 13, 0, 2)
#define SYS_CNTVOFF_EL2 sys_reg(3, 4, 14, 0, 3)
#define SYS_CNTHCTL_EL2 sys_reg(3, 4, 14, 1, 0)
/* VHE encodings for architectural EL0/1 system registers */
#define SYS_SCTLR_EL12 sys_reg(3, 5, 1, 0, 0)
#define SYS_TTBR0_EL12 sys_reg(3, 5, 2, 0, 0)
#define SYS_TTBR1_EL12 sys_reg(3, 5, 2, 0, 1)
#define SYS_TCR_EL12 sys_reg(3, 5, 2, 0, 2)
#define SYS_SPSR_EL12 sys_reg(3, 5, 4, 0, 0)
#define SYS_ELR_EL12 sys_reg(3, 5, 4, 0, 1)
#define SYS_AFSR0_EL12 sys_reg(3, 5, 5, 1, 0)
#define SYS_AFSR1_EL12 sys_reg(3, 5, 5, 1, 1)
#define SYS_ESR_EL12 sys_reg(3, 5, 5, 2, 0)
#define SYS_TFSR_EL12 sys_reg(3, 5, 5, 6, 0)
#define SYS_MAIR_EL12 sys_reg(3, 5, 10, 2, 0)
#define SYS_AMAIR_EL12 sys_reg(3, 5, 10, 3, 0)
#define SYS_VBAR_EL12 sys_reg(3, 5, 12, 0, 0)
#define SYS_CNTKCTL_EL12 sys_reg(3, 5, 14, 1, 0)
#define SYS_CNTP_TVAL_EL02 sys_reg(3, 5, 14, 2, 0)
#define SYS_CNTP_CTL_EL02 sys_reg(3, 5, 14, 2, 1)
#define SYS_CNTP_CVAL_EL02 sys_reg(3, 5, 14, 2, 2)
#define SYS_CNTV_TVAL_EL02 sys_reg(3, 5, 14, 3, 0)
#define SYS_CNTV_CTL_EL02 sys_reg(3, 5, 14, 3, 1)
#define SYS_CNTV_CVAL_EL02 sys_reg(3, 5, 14, 3, 2)
#define SYS_SP_EL2 sys_reg(3, 6, 4, 1, 0)
/* Common SCTLR_ELx flags. */
#define SCTLR_ELx_ENTP2 (BIT(60))
#define SCTLR_ELx_DSSBS (BIT(44))
#define SCTLR_ELx_ATA (BIT(43))
#define SCTLR_ELx_EE_SHIFT 25
#define SCTLR_ELx_ENIA_SHIFT 31
#define SCTLR_ELx_ITFSB (BIT(37))
#define SCTLR_ELx_ENIA (BIT(SCTLR_ELx_ENIA_SHIFT))
#define SCTLR_ELx_ENIB (BIT(30))
#define SCTLR_ELx_LSMAOE (BIT(29))
#define SCTLR_ELx_nTLSMD (BIT(28))
#define SCTLR_ELx_ENDA (BIT(27))
#define SCTLR_ELx_EE (BIT(SCTLR_ELx_EE_SHIFT))
#define SCTLR_ELx_EIS (BIT(22))
#define SCTLR_ELx_IESB (BIT(21))
#define SCTLR_ELx_TSCXT (BIT(20))
#define SCTLR_ELx_WXN (BIT(19))
#define SCTLR_ELx_ENDB (BIT(13))
#define SCTLR_ELx_I (BIT(12))
#define SCTLR_ELx_EOS (BIT(11))
#define SCTLR_ELx_SA (BIT(3))
#define SCTLR_ELx_C (BIT(2))
#define SCTLR_ELx_A (BIT(1))
#define SCTLR_ELx_M (BIT(0))
/* SCTLR_EL2 specific flags. */
#define SCTLR_EL2_RES1 ((BIT(4)) | (BIT(5)) | (BIT(11)) | (BIT(16)) | \
(BIT(18)) | (BIT(22)) | (BIT(23)) | (BIT(28)) | \
(BIT(29)))
#define SCTLR_EL2_BT (BIT(36))
#ifdef CONFIG_CPU_BIG_ENDIAN
#define ENDIAN_SET_EL2 SCTLR_ELx_EE
#else
#define ENDIAN_SET_EL2 0
#endif
#define INIT_SCTLR_EL2_MMU_ON \
(SCTLR_ELx_M | SCTLR_ELx_C | SCTLR_ELx_SA | SCTLR_ELx_I | \
SCTLR_ELx_IESB | SCTLR_ELx_WXN | ENDIAN_SET_EL2 | \
SCTLR_ELx_ITFSB | SCTLR_EL2_RES1)
#define INIT_SCTLR_EL2_MMU_OFF \
(SCTLR_EL2_RES1 | ENDIAN_SET_EL2)
/* SCTLR_EL1 specific flags. */
#ifdef CONFIG_CPU_BIG_ENDIAN
#define ENDIAN_SET_EL1 (SCTLR_EL1_E0E | SCTLR_ELx_EE)
#else
#define ENDIAN_SET_EL1 0
#endif
#define INIT_SCTLR_EL1_MMU_OFF \
(ENDIAN_SET_EL1 | SCTLR_EL1_LSMAOE | SCTLR_EL1_nTLSMD | \
SCTLR_EL1_EIS | SCTLR_EL1_TSCXT | SCTLR_EL1_EOS)
#define INIT_SCTLR_EL1_MMU_ON \
(SCTLR_ELx_M | SCTLR_ELx_C | SCTLR_ELx_SA | \
SCTLR_EL1_SA0 | SCTLR_EL1_SED | SCTLR_ELx_I | \
SCTLR_EL1_DZE | SCTLR_EL1_UCT | SCTLR_EL1_nTWE | \
SCTLR_ELx_IESB | SCTLR_EL1_SPAN | SCTLR_ELx_ITFSB | \
ENDIAN_SET_EL1 | SCTLR_EL1_UCI | SCTLR_EL1_EPAN | \
SCTLR_EL1_LSMAOE | SCTLR_EL1_nTLSMD | SCTLR_EL1_EIS | \
SCTLR_EL1_TSCXT | SCTLR_EL1_EOS)
/* MAIR_ELx memory attributes (used by Linux) */
#define MAIR_ATTR_DEVICE_nGnRnE UL(0x00)
#define MAIR_ATTR_DEVICE_nGnRE UL(0x04)
#define MAIR_ATTR_NORMAL_NC UL(0x44)
#define MAIR_ATTR_NORMAL_TAGGED UL(0xf0)
#define MAIR_ATTR_NORMAL UL(0xff)
#define MAIR_ATTR_MASK UL(0xff)
/* Position the attr at the correct index */
#define MAIR_ATTRIDX(attr, idx) ((attr) << ((idx) * 8))
/* id_aa64pfr0 */
#define ID_AA64PFR0_EL1_ELx_64BIT_ONLY 0x1
#define ID_AA64PFR0_EL1_ELx_32BIT_64BIT 0x2
/* id_aa64mmfr0 */
#define ID_AA64MMFR0_EL1_TGRAN4_SUPPORTED_MIN 0x0
#define ID_AA64MMFR0_EL1_TGRAN4_SUPPORTED_MAX 0x7
#define ID_AA64MMFR0_EL1_TGRAN64_SUPPORTED_MIN 0x0
#define ID_AA64MMFR0_EL1_TGRAN64_SUPPORTED_MAX 0x7
#define ID_AA64MMFR0_EL1_TGRAN16_SUPPORTED_MIN 0x1
#define ID_AA64MMFR0_EL1_TGRAN16_SUPPORTED_MAX 0xf
#define ARM64_MIN_PARANGE_BITS 32
#define ID_AA64MMFR0_EL1_TGRAN_2_SUPPORTED_DEFAULT 0x0
#define ID_AA64MMFR0_EL1_TGRAN_2_SUPPORTED_NONE 0x1
#define ID_AA64MMFR0_EL1_TGRAN_2_SUPPORTED_MIN 0x2
#define ID_AA64MMFR0_EL1_TGRAN_2_SUPPORTED_MAX 0x7
#ifdef CONFIG_ARM64_PA_BITS_52
#define ID_AA64MMFR0_EL1_PARANGE_MAX ID_AA64MMFR0_EL1_PARANGE_52
#else
#define ID_AA64MMFR0_EL1_PARANGE_MAX ID_AA64MMFR0_EL1_PARANGE_48
#endif
#if defined(CONFIG_ARM64_4K_PAGES)
#define ID_AA64MMFR0_EL1_TGRAN_SHIFT ID_AA64MMFR0_EL1_TGRAN4_SHIFT
#define ID_AA64MMFR0_EL1_TGRAN_SUPPORTED_MIN ID_AA64MMFR0_EL1_TGRAN4_SUPPORTED_MIN
#define ID_AA64MMFR0_EL1_TGRAN_SUPPORTED_MAX ID_AA64MMFR0_EL1_TGRAN4_SUPPORTED_MAX
#define ID_AA64MMFR0_EL1_TGRAN_2_SHIFT ID_AA64MMFR0_EL1_TGRAN4_2_SHIFT
#elif defined(CONFIG_ARM64_16K_PAGES)
#define ID_AA64MMFR0_EL1_TGRAN_SHIFT ID_AA64MMFR0_EL1_TGRAN16_SHIFT
#define ID_AA64MMFR0_EL1_TGRAN_SUPPORTED_MIN ID_AA64MMFR0_EL1_TGRAN16_SUPPORTED_MIN
#define ID_AA64MMFR0_EL1_TGRAN_SUPPORTED_MAX ID_AA64MMFR0_EL1_TGRAN16_SUPPORTED_MAX
#define ID_AA64MMFR0_EL1_TGRAN_2_SHIFT ID_AA64MMFR0_EL1_TGRAN16_2_SHIFT
#elif defined(CONFIG_ARM64_64K_PAGES)
#define ID_AA64MMFR0_EL1_TGRAN_SHIFT ID_AA64MMFR0_EL1_TGRAN64_SHIFT
#define ID_AA64MMFR0_EL1_TGRAN_SUPPORTED_MIN ID_AA64MMFR0_EL1_TGRAN64_SUPPORTED_MIN
#define ID_AA64MMFR0_EL1_TGRAN_SUPPORTED_MAX ID_AA64MMFR0_EL1_TGRAN64_SUPPORTED_MAX
#define ID_AA64MMFR0_EL1_TGRAN_2_SHIFT ID_AA64MMFR0_EL1_TGRAN64_2_SHIFT
#endif
#define CPACR_EL1_FPEN_EL1EN (BIT(20)) /* enable EL1 access */
#define CPACR_EL1_FPEN_EL0EN (BIT(21)) /* enable EL0 access, if EL1EN set */
#define CPACR_EL1_SMEN_EL1EN (BIT(24)) /* enable EL1 access */
#define CPACR_EL1_SMEN_EL0EN (BIT(25)) /* enable EL0 access, if EL1EN set */
#define CPACR_EL1_ZEN_EL1EN (BIT(16)) /* enable EL1 access */
#define CPACR_EL1_ZEN_EL0EN (BIT(17)) /* enable EL0 access, if EL1EN set */
/* GCR_EL1 Definitions */
#define SYS_GCR_EL1_RRND (BIT(16))
#define SYS_GCR_EL1_EXCL_MASK 0xffffUL
#ifdef CONFIG_KASAN_HW_TAGS
/*
* KASAN always uses a whole byte for its tags. With CONFIG_KASAN_HW_TAGS it
* only uses tags in the range 0xF0-0xFF, which we map to MTE tags 0x0-0xF.
*/
#define __MTE_TAG_MIN (KASAN_TAG_MIN & 0xf)
#define __MTE_TAG_MAX (KASAN_TAG_MAX & 0xf)
#define __MTE_TAG_INCL GENMASK(__MTE_TAG_MAX, __MTE_TAG_MIN)
#define KERNEL_GCR_EL1_EXCL (SYS_GCR_EL1_EXCL_MASK & ~__MTE_TAG_INCL)
#else
#define KERNEL_GCR_EL1_EXCL SYS_GCR_EL1_EXCL_MASK
#endif
#define KERNEL_GCR_EL1 (SYS_GCR_EL1_RRND | KERNEL_GCR_EL1_EXCL)
/* RGSR_EL1 Definitions */
#define SYS_RGSR_EL1_TAG_MASK 0xfUL
#define SYS_RGSR_EL1_SEED_SHIFT 8
#define SYS_RGSR_EL1_SEED_MASK 0xffffUL
/* TFSR{,E0}_EL1 bit definitions */
#define SYS_TFSR_EL1_TF0_SHIFT 0
#define SYS_TFSR_EL1_TF1_SHIFT 1
#define SYS_TFSR_EL1_TF0 (UL(1) << SYS_TFSR_EL1_TF0_SHIFT)
#define SYS_TFSR_EL1_TF1 (UL(1) << SYS_TFSR_EL1_TF1_SHIFT)
/* Safe value for MPIDR_EL1: Bit31:RES1, Bit30:U:0, Bit24:MT:0 */
#define SYS_MPIDR_SAFE_VAL (BIT(31))
#define TRFCR_ELx_TS_SHIFT 5
#define TRFCR_ELx_TS_MASK ((0x3UL) << TRFCR_ELx_TS_SHIFT)
#define TRFCR_ELx_TS_VIRTUAL ((0x1UL) << TRFCR_ELx_TS_SHIFT)
#define TRFCR_ELx_TS_GUEST_PHYSICAL ((0x2UL) << TRFCR_ELx_TS_SHIFT)
#define TRFCR_ELx_TS_PHYSICAL ((0x3UL) << TRFCR_ELx_TS_SHIFT)
#define TRFCR_EL2_CX BIT(3)
#define TRFCR_ELx_ExTRE BIT(1)
#define TRFCR_ELx_E0TRE BIT(0)
/* GIC Hypervisor interface registers */
/* ICH_MISR_EL2 bit definitions */
#define ICH_MISR_EOI (1 << 0)
#define ICH_MISR_U (1 << 1)
/* ICH_LR*_EL2 bit definitions */
#define ICH_LR_VIRTUAL_ID_MASK ((1ULL << 32) - 1)
#define ICH_LR_EOI (1ULL << 41)
#define ICH_LR_GROUP (1ULL << 60)
#define ICH_LR_HW (1ULL << 61)
#define ICH_LR_STATE (3ULL << 62)
#define ICH_LR_PENDING_BIT (1ULL << 62)
#define ICH_LR_ACTIVE_BIT (1ULL << 63)
#define ICH_LR_PHYS_ID_SHIFT 32
#define ICH_LR_PHYS_ID_MASK (0x3ffULL << ICH_LR_PHYS_ID_SHIFT)
#define ICH_LR_PRIORITY_SHIFT 48
#define ICH_LR_PRIORITY_MASK (0xffULL << ICH_LR_PRIORITY_SHIFT)
/* ICH_HCR_EL2 bit definitions */
#define ICH_HCR_EN (1 << 0)
#define ICH_HCR_UIE (1 << 1)
#define ICH_HCR_NPIE (1 << 3)
#define ICH_HCR_TC (1 << 10)
#define ICH_HCR_TALL0 (1 << 11)
#define ICH_HCR_TALL1 (1 << 12)
#define ICH_HCR_TDIR (1 << 14)
#define ICH_HCR_EOIcount_SHIFT 27
#define ICH_HCR_EOIcount_MASK (0x1f << ICH_HCR_EOIcount_SHIFT)
/* ICH_VMCR_EL2 bit definitions */
#define ICH_VMCR_ACK_CTL_SHIFT 2
#define ICH_VMCR_ACK_CTL_MASK (1 << ICH_VMCR_ACK_CTL_SHIFT)
#define ICH_VMCR_FIQ_EN_SHIFT 3
#define ICH_VMCR_FIQ_EN_MASK (1 << ICH_VMCR_FIQ_EN_SHIFT)
#define ICH_VMCR_CBPR_SHIFT 4
#define ICH_VMCR_CBPR_MASK (1 << ICH_VMCR_CBPR_SHIFT)
#define ICH_VMCR_EOIM_SHIFT 9
#define ICH_VMCR_EOIM_MASK (1 << ICH_VMCR_EOIM_SHIFT)
#define ICH_VMCR_BPR1_SHIFT 18
#define ICH_VMCR_BPR1_MASK (7 << ICH_VMCR_BPR1_SHIFT)
#define ICH_VMCR_BPR0_SHIFT 21
#define ICH_VMCR_BPR0_MASK (7 << ICH_VMCR_BPR0_SHIFT)
#define ICH_VMCR_PMR_SHIFT 24
#define ICH_VMCR_PMR_MASK (0xffUL << ICH_VMCR_PMR_SHIFT)
#define ICH_VMCR_ENG0_SHIFT 0
#define ICH_VMCR_ENG0_MASK (1 << ICH_VMCR_ENG0_SHIFT)
#define ICH_VMCR_ENG1_SHIFT 1
#define ICH_VMCR_ENG1_MASK (1 << ICH_VMCR_ENG1_SHIFT)
/* ICH_VTR_EL2 bit definitions */
#define ICH_VTR_PRI_BITS_SHIFT 29
#define ICH_VTR_PRI_BITS_MASK (7 << ICH_VTR_PRI_BITS_SHIFT)
#define ICH_VTR_ID_BITS_SHIFT 23
#define ICH_VTR_ID_BITS_MASK (7 << ICH_VTR_ID_BITS_SHIFT)
#define ICH_VTR_SEIS_SHIFT 22
#define ICH_VTR_SEIS_MASK (1 << ICH_VTR_SEIS_SHIFT)
#define ICH_VTR_A3V_SHIFT 21
#define ICH_VTR_A3V_MASK (1 << ICH_VTR_A3V_SHIFT)
#define ICH_VTR_TDS_SHIFT 19
#define ICH_VTR_TDS_MASK (1 << ICH_VTR_TDS_SHIFT)
/*
* Permission Indirection Extension (PIE) permission encodings.
* Encodings with the _O suffix, have overlays applied (Permission Overlay Extension).
*/
#define PIE_NONE_O 0x0
#define PIE_R_O 0x1
#define PIE_X_O 0x2
#define PIE_RX_O 0x3
#define PIE_RW_O 0x5
#define PIE_RWnX_O 0x6
#define PIE_RWX_O 0x7
#define PIE_R 0x8
#define PIE_GCS 0x9
#define PIE_RX 0xa
#define PIE_RW 0xc
#define PIE_RWX 0xe
#define PIRx_ELx_PERM(idx, perm) ((perm) << ((idx) * 4))
#define ARM64_FEATURE_FIELD_BITS 4
/* Defined for compatibility only, do not add new users. */
#define ARM64_FEATURE_MASK(x) (x##_MASK)
#ifdef __ASSEMBLY__
.macro mrs_s, rt, sreg
__emit_inst(0xd5200000|(\sreg)|(.L__gpr_num_\rt))
.endm
.macro msr_s, sreg, rt
__emit_inst(0xd5000000|(\sreg)|(.L__gpr_num_\rt))
.endm
#else
#include <linux/bitfield.h>
#include <linux/build_bug.h>
#include <linux/types.h>
#include <asm/alternative.h>
#define DEFINE_MRS_S \
__DEFINE_ASM_GPR_NUMS \
" .macro mrs_s, rt, sreg\n" \
__emit_inst(0xd5200000|(\\sreg)|(.L__gpr_num_\\rt)) \
" .endm\n"
#define DEFINE_MSR_S \
__DEFINE_ASM_GPR_NUMS \
" .macro msr_s, sreg, rt\n" \
__emit_inst(0xd5000000|(\\sreg)|(.L__gpr_num_\\rt)) \
" .endm\n"
#define UNDEFINE_MRS_S \
" .purgem mrs_s\n"
#define UNDEFINE_MSR_S \
" .purgem msr_s\n"
#define __mrs_s(v, r) \
DEFINE_MRS_S \
" mrs_s " v ", " __stringify(r) "\n" \
UNDEFINE_MRS_S
#define __msr_s(r, v) \
DEFINE_MSR_S \
" msr_s " __stringify(r) ", " v "\n" \
UNDEFINE_MSR_S
/*
* Unlike read_cpuid, calls to read_sysreg are never expected to be
* optimized away or replaced with synthetic values.
*/
#define read_sysreg(r) ({ \
u64 __val; \
asm volatile("mrs %0, " __stringify(r) : "=r" (__val)); \
__val; \
})
/*
* The "Z" constraint normally means a zero immediate, but when combined with
* the "%x0" template means XZR.
*/
#define write_sysreg(v, r) do { \
u64 __val = (u64)(v); \
asm volatile("msr " __stringify(r) ", %x0" \
: : "rZ" (__val)); \
} while (0)
/*
* For registers without architectural names, or simply unsupported by
* GAS.
*/
#define read_sysreg_s(r) ({ \
u64 __val; \
asm volatile(__mrs_s("%0", r) : "=r" (__val)); \
__val; \
})
#define write_sysreg_s(v, r) do { \
u64 __val = (u64)(v); \
asm volatile(__msr_s(r, "%x0") : : "rZ" (__val)); \
} while (0)
/*
* Modify bits in a sysreg. Bits in the clear mask are zeroed, then bits in the
* set mask are set. Other bits are left as-is.
*/
#define sysreg_clear_set(sysreg, clear, set) do { \
u64 __scs_val = read_sysreg(sysreg); \
u64 __scs_new = (__scs_val & ~(u64)(clear)) | (set); \
if (__scs_new != __scs_val) \
write_sysreg(__scs_new, sysreg); \
} while (0)
#define sysreg_clear_set_s(sysreg, clear, set) do { \
u64 __scs_val = read_sysreg_s(sysreg); \
u64 __scs_new = (__scs_val & ~(u64)(clear)) | (set); \
if (__scs_new != __scs_val) \
write_sysreg_s(__scs_new, sysreg); \
} while (0)
#define read_sysreg_par() ({ \
u64 par; \
asm(ALTERNATIVE("nop", "dmb sy", ARM64_WORKAROUND_1508412)); \
par = read_sysreg(par_el1); \
asm(ALTERNATIVE("nop", "dmb sy", ARM64_WORKAROUND_1508412)); \
par; \
})
#define SYS_FIELD_GET(reg, field, val) \
FIELD_GET(reg##_##field##_MASK, val)
#define SYS_FIELD_PREP(reg, field, val) \
FIELD_PREP(reg##_##field##_MASK, val)
#define SYS_FIELD_PREP_ENUM(reg, field, val) \
FIELD_PREP(reg##_##field##_MASK, reg##_##field##_##val)
#endif
#endif /* __ASM_SYSREG_H */