| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| #ifndef CPU_X86_MSR_H |
| #define CPU_X86_MSR_H |
| |
| #include <cpu/x86/msr_access.h> /* IWYU pragma: export */ |
| |
| /* Intel SDM: Table 2-1 |
| * IA-32 architectural MSR: Extended Feature Enable Register |
| * |
| * AMD64 Programmers Manual vol2 Revision 3.30 and/or the device's BKDG |
| */ |
| |
| #define IA32_EFER 0xC0000080 |
| #define EFER_NXE (1 << 11) |
| #define EFER_LMA (1 << 10) |
| #define EFER_LME (1 << 8) |
| #define EFER_SCE (1 << 0) |
| |
| /* Page attribute type MSR */ |
| #define TSC_MSR 0x10 |
| #define IA32_PLATFORM_ID 0x17 |
| #define IA32_APIC_BASE_MSR_INDEX 0x1B |
| #define IA32_FEATURE_CONTROL 0x3a |
| #define FEATURE_CONTROL_LOCK_BIT (1 << 0) |
| #define FEATURE_ENABLE_VMX (1 << 2) |
| #define SMRR_ENABLE (1 << 3) |
| #define CPUID_VMX (1 << 5) |
| #define CPUID_SMX (1 << 6) |
| #define CPUID_DCA (1 << 18) |
| #define CPUID_X2APIC (1 << 21) |
| #define CPUID_AES (1 << 25) |
| #define SGX_GLOBAL_ENABLE (1 << 18) |
| #define PLATFORM_INFO_SET_TDP (1 << 29) |
| #define IA32_BIOS_UPDT_TRIG 0x79 |
| #define IA32_BIOS_SIGN_ID 0x8b |
| #define IA32_MPERF 0xe7 |
| #define IA32_APERF 0xe8 |
| /* STM */ |
| #define IA32_SMM_MONITOR_CTL_MSR 0x9B |
| #define SMBASE_RO_MSR 0x98 |
| #define IA32_SMM_MONITOR_VALID (1 << 0) |
| #define IA32_MCG_CAP 0x179 |
| #define MCG_CTL_P (1 << 8) |
| #define MCA_BANKS_MASK 0xff |
| #define IA32_PERF_STATUS 0x198 |
| #define IA32_PERF_CTL 0x199 |
| #define IA32_THERM_INTERRUPT 0x19b |
| #define IA32_MISC_ENABLE 0x1a0 |
| #define FAST_STRINGS_ENABLE_BIT (1 << 0) |
| #define SPEED_STEP_ENABLE_BIT (1 << 16) |
| #define IA32_ENERGY_PERF_BIAS 0x1b0 |
| #define ENERGY_POLICY_PERFORMANCE 0 |
| #define ENERGY_POLICY_NORMAL 6 |
| #define ENERGY_POLICY_POWERSAVE 15 |
| #define ENERGY_POLICY_MASK 0xf |
| #define IA32_PACKAGE_THERM_INTERRUPT 0x1b2 |
| #define SMRR_PHYSBASE_MSR 0x1F2 |
| #define SMRR_PHYSMASK_MSR 0x1F3 |
| #define IA32_PLATFORM_DCA_CAP 0x1f8 |
| #define DCA_TYPE0_EN (1 << 0) |
| #define IA32_PAT 0x277 |
| #define IA32_MC0_CTL 0x400 |
| #define IA32_MC_CTL(bank) (IA32_MC0_CTL + 4 * (bank)) |
| #define IA32_MC0_STATUS 0x401 |
| #define IA32_MC_STATUS(bank) (IA32_MC0_STATUS + 4 * (bank)) |
| #define MCA_STATUS_HI_VAL (1UL << (63 - 32)) |
| #define MCA_STATUS_HI_OVERFLOW (1UL << (62 - 32)) |
| #define MCA_STATUS_HI_UC (1UL << (61 - 32)) |
| #define MCA_STATUS_HI_EN (1UL << (60 - 32)) |
| #define MCA_STATUS_HI_MISCV (1UL << (59 - 32)) |
| #define MCA_STATUS_HI_ADDRV (1UL << (58 - 32)) |
| #define MCA_STATUS_HI_PCC (1UL << (57 - 32)) |
| #define MCA_STATUS_HI_COREID_VAL (1UL << (56 - 32)) |
| #define MCA_STATUS_HI_CECC (1UL << (46 - 32)) |
| #define MCA_STATUS_HI_UECC (1UL << (45 - 32)) |
| #define MCA_STATUS_HI_DEFERRED (1UL << (44 - 32)) |
| #define MCA_STATUS_HI_POISON (1UL << (43 - 32)) |
| #define MCA_STATUS_HI_SUBLINK (1UL << (41 - 32)) |
| #define MCA_STATUS_HI_ERRCOREID_MASK (0xf << 0) |
| #define MCA_STATUS_LO_ERRCODE_EXT_SH 16 |
| #define MCA_STATUS_LO_ERRCODE_EXT_MASK (0x3f << MCA_STATUS_LO_ERRCODE_EXT_SH) |
| #define MCA_STATUS_LO_ERRCODE_MASK (0xffff << 0) |
| #define IA32_MC0_ADDR 0x402 |
| #define IA32_MC_ADDR(bank) (IA32_MC0_ADDR + 4 * (bank)) |
| #define IA32_MC0_MISC 0x403 |
| #define IA32_MC_MISC(bank) (IA32_MC0_MISC + 4 * (bank)) |
| #define IA32_VMX_BASIC_MSR 0x480 |
| #define VMX_BASIC_HI_DUAL_MONITOR (1UL << (49 - 32)) |
| #define IA32_VMX_MISC_MSR 0x485 |
| |
| #define IA32_PM_ENABLE 0x770 |
| #define HWP_ENABLE 0x1 |
| #define IA32_HWP_CAPABILITIES 0x771 |
| #define IA32_HWP_REQUEST 0x774 |
| #define IA32_HWP_REQUEST_EPP_MASK 0xff000000 |
| #define IA32_HWP_REQUEST_EPP_SHIFT 24 |
| #define IA32_HWP_STATUS 0x777 |
| #define IA32_L3_PROTECTED_WAYS 0xc85 |
| #define IA32_SF_QOS_INFO 0xc87 |
| #define IA32_SF_WAY_COUNT_MASK 0x3f |
| #define IA32_PQR_ASSOC 0xc8f |
| /* MSR bits 33:32 encode slot number 0-3 */ |
| #define IA32_PQR_ASSOC_MASK (1 << 0 | 1 << 1) |
| #define IA32_L3_MASK_1 0xc91 |
| #define IA32_L3_MASK_2 0xc92 |
| |
| #define IA32_CR_SF_QOS_MASK_1 0x1891 |
| #define IA32_CR_SF_QOS_MASK_2 0x1892 |
| |
| #ifndef __ASSEMBLER__ |
| |
| typedef struct msrinit_struct { |
| unsigned int index; |
| msr_t msr; |
| } msrinit_t; |
| |
| /* Get MCA bank count from MSR */ |
| static inline unsigned int mca_get_bank_count(void) |
| { |
| msr_t msr = rdmsr(IA32_MCG_CAP); |
| return msr.lo & MCA_BANKS_MASK; |
| } |
| |
| /* Clear all MCA status registers */ |
| static inline void mca_clear_status(void) |
| { |
| const unsigned int num_banks = mca_get_bank_count(); |
| const msr_t msr = {.lo = 0, .hi = 0}; |
| |
| for (unsigned int i = 0 ; i < num_banks ; i++) |
| wrmsr(IA32_MC_STATUS(i), msr); |
| } |
| |
| /* Helpers for interpreting MC[i]_STATUS */ |
| |
| static inline int mca_valid(msr_t msr) |
| { |
| return !!(msr.hi & MCA_STATUS_HI_VAL); |
| } |
| |
| static inline int mca_over(msr_t msr) |
| { |
| return !!(msr.hi & MCA_STATUS_HI_OVERFLOW); |
| } |
| |
| static inline int mca_uc(msr_t msr) |
| { |
| return !!(msr.hi & MCA_STATUS_HI_UC); |
| } |
| |
| static inline int mca_en(msr_t msr) |
| { |
| return !!(msr.hi & MCA_STATUS_HI_EN); |
| } |
| |
| static inline int mca_miscv(msr_t msr) |
| { |
| return !!(msr.hi & MCA_STATUS_HI_MISCV); |
| } |
| |
| static inline int mca_addrv(msr_t msr) |
| { |
| return !!(msr.hi & MCA_STATUS_HI_ADDRV); |
| } |
| |
| static inline int mca_pcc(msr_t msr) |
| { |
| return !!(msr.hi & MCA_STATUS_HI_PCC); |
| } |
| |
| static inline int mca_idv(msr_t msr) |
| { |
| return !!(msr.hi & MCA_STATUS_HI_COREID_VAL); |
| } |
| |
| static inline int mca_cecc(msr_t msr) |
| { |
| return !!(msr.hi & MCA_STATUS_HI_CECC); |
| } |
| |
| static inline int mca_uecc(msr_t msr) |
| { |
| return !!(msr.hi & MCA_STATUS_HI_UECC); |
| } |
| |
| static inline int mca_defd(msr_t msr) |
| { |
| return !!(msr.hi & MCA_STATUS_HI_DEFERRED); |
| } |
| |
| static inline int mca_poison(msr_t msr) |
| { |
| return !!(msr.hi & MCA_STATUS_HI_POISON); |
| } |
| |
| static inline int mca_sublink(msr_t msr) |
| { |
| return !!(msr.hi & MCA_STATUS_HI_SUBLINK); |
| } |
| |
| static inline uint16_t mca_err_code(msr_t reg) |
| { |
| return reg.lo & MCA_STATUS_LO_ERRCODE_MASK; |
| } |
| |
| static inline uint16_t mca_err_extcode(msr_t reg) |
| { |
| return reg.lo & MCA_STATUS_LO_ERRCODE_EXT_MASK; |
| } |
| |
| /* Machine Check errors may be categorized by type, as determined by the |
| * Error Code field of MC[i]_STATUS. The definitions below can typically |
| * be found by searching the BKDG for a table called "Error Code Types". |
| */ |
| /* TLB Errors 0000 0000 0001 TTLL */ |
| #define MCA_ERRCODE_TLB_DETECT 0xfff0 |
| #define MCA_ERRCODE_TLB_TT_SH 2 /* Transaction Type */ |
| #define MCA_ERRCODE_TLB_TT_MASK (0x3 << MCA_ERRCODE_TLB_TT_SH) |
| #define MCA_ERRCODE_TLB_LL_SH 0 /* Cache Level */ |
| #define MCA_ERRCODE_TLB_LL_MASK (0x3 << MCA_ERRCODE_TLB_LL_SH) |
| |
| /* Memory Errors 0000 0001 RRRR TTLL */ |
| #define MCA_ERRCODE_MEM_DETECT 0xff00 |
| #define MCA_ERRCODE_MEM_RRRR_SH 4 /* Memory Transaction Type */ |
| #define MCA_ERRCODE_MEM_RRRR_MASK (0xf << MCA_ERRCODE_MEM_RRRR_MASK) |
| #define MCA_ERRCODE_MEM_TT_SH 2 /* Transaction Type */ |
| #define MCA_ERRCODE_MEM_TT_MASK (0x3 << MCA_ERRCODE_MEM_TT_SH) |
| #define MCA_ERRCODE_MEM_LL_SH 0 /* Cache Level */ |
| #define MCA_ERRCODE_MEM_LL_MASK (0x3 << MCA_ERRCODE_MEM_LL_SH) |
| |
| /* Bus Errors 0000 1PPT RRRR IILL */ |
| #define MCA_ERRCODE_BUS_DETECT 0xf800 |
| #define MCA_ERRCODE_BUS_PP_SH 9 /* Participation Processor */ |
| #define MCA_ERRCODE_BUS_PP_MASK (0x3 << MCA_ERRCODE_BUS_PP_SH) |
| #define MCA_ERRCODE_BUS_T_SH 8 /* Timeout */ |
| #define MCA_ERRCODE_BUS_T_MASK (0x1 << MCA_ERRCODE_BUS_T_SH) |
| #define MCA_ERRCODE_BUS_RRRR_SH 4 /* Memory Transaction Type */ |
| #define MCA_ERRCODE_BUS_RRRR_MASK (0xf << MCA_ERRCODE_BUS_RRRR_SH) |
| #define MCA_ERRCODE_BUS_II_SH 2 /* Memory or IO */ |
| #define MCA_ERRCODE_BUS_II_MASK (0x3 << MCA_ERRCODE_BUS_II_SH) |
| #define MCA_ERRCODE_BUS_LL_SH 0 /* Cache Level */ |
| #define MCA_ERRCODE_BUS_LL_MASK (0x3 << MCA_ERRCODE_BUS_LL_SH) |
| |
| /* Int. Unclassified Errors 0000 01UU 0000 0000 */ |
| #define MCA_ERRCODE_INT_DETECT 0xfc00 |
| #define MCA_ERRCODE_INT_UU_SH 8 /* Internal Error Type */ |
| #define MCA_ERRCODE_INT_UU_MASK (0x3 << MCA_ERRCODE_INT_UU_SH) |
| |
| #define MCA_BANK_LS 0 /* Load-store, including DC */ |
| #define MCA_BANK_IF 1 /* Instruction Fetch, including IC */ |
| #define MCA_BANK_CU 2 /* Combined Unit, including L2 */ |
| /* bank 3 reserved */ |
| #define MCA_BANK_NB 4 /* Northbridge, including IO link */ |
| #define MCA_BANK_EX 5 /* Execution Unit */ |
| #define MCA_BANK_FP 6 /* Floating Point */ |
| |
| enum mca_err_code_types { |
| MCA_ERRTYPE_UNKNOWN, |
| MCA_ERRTYPE_TLB, |
| MCA_ERRTYPE_MEM, |
| MCA_ERRTYPE_BUS, |
| MCA_ERRTYPE_INT |
| }; |
| |
| static inline enum mca_err_code_types mca_err_type(msr_t reg) |
| { |
| uint16_t error = mca_err_code(reg); |
| if (error & MCA_ERRCODE_BUS_DETECT) /* this order must be maintained */ |
| return MCA_ERRTYPE_BUS; |
| if (error & MCA_ERRCODE_INT_DETECT) |
| return MCA_ERRTYPE_INT; |
| if (error & MCA_ERRCODE_MEM_DETECT) |
| return MCA_ERRTYPE_MEM; |
| if (error & MCA_ERRCODE_TLB_DETECT) |
| return MCA_ERRTYPE_TLB; |
| return MCA_ERRTYPE_UNKNOWN; |
| } |
| |
| /** |
| * Helper for reading a MSR |
| * |
| * @param[in] reg The MSR. |
| */ |
| static inline uint64_t msr_read(unsigned int reg) |
| { |
| msr_t msr = rdmsr(reg); |
| return msr.raw; |
| } |
| |
| /** |
| * Helper for writing a MSR |
| * |
| * @param[in] reg The MSR. |
| * @param[in] value The value to be written to the MSR. |
| */ |
| static inline void msr_write(unsigned int reg, uint64_t value) |
| { |
| msr_t msr = { .raw = value }; |
| wrmsr(reg, msr); |
| } |
| |
| /** |
| * Helper for (un)setting MSR bitmasks |
| * |
| * @param[in] reg The MSR. |
| * @param[in] unset Bitmask with ones to the bits to unset from the MSR. |
| * @param[in] set Bitmask with ones to the bits to set from the MSR. |
| */ |
| static inline void msr_unset_and_set(unsigned int reg, uint64_t unset, uint64_t set) |
| { |
| msr_t msr; |
| |
| msr = rdmsr(reg); |
| msr.raw &= ~unset; |
| msr.raw |= set; |
| wrmsr(reg, msr); |
| } |
| |
| /** |
| * Helper for setting MSR bitmasks |
| * |
| * @param[in] reg The MSR. |
| * @param[in] set Bitmask with ones to the bits to set from the MSR. |
| */ |
| static inline void msr_set(unsigned int reg, uint64_t set) |
| { |
| msr_unset_and_set(reg, 0, set); |
| } |
| |
| /** |
| * Helper for unsetting MSR bitmasks |
| * |
| * @param[in] reg The MSR. |
| * @param[in] unset Bitmask with ones to the bits to unset from the MSR. |
| */ |
| static inline void msr_unset(unsigned int reg, uint64_t unset) |
| { |
| msr_unset_and_set(reg, unset, 0); |
| } |
| |
| #endif /* __ASSEMBLER__ */ |
| #endif /* CPU_X86_MSR_H */ |