shell bypass 403
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/
usr
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src
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linux-headers-6.8.0-83-generic
/
arch
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riscv
/
include
/
asm
/ [
drwxr-xr-x
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sbi.h
/* SPDX-License-Identifier: GPL-2.0-only */ /* * Copyright (C) 2015 Regents of the University of California * Copyright (c) 2020 Western Digital Corporation or its affiliates. */ #ifndef _ASM_RISCV_SBI_H #define _ASM_RISCV_SBI_H #include <linux/types.h> #include <linux/cpumask.h> #include <linux/jump_label.h> #ifdef CONFIG_RISCV_SBI enum sbi_ext_id { #ifdef CONFIG_RISCV_SBI_V01 SBI_EXT_0_1_SET_TIMER = 0x0, SBI_EXT_0_1_CONSOLE_PUTCHAR = 0x1, SBI_EXT_0_1_CONSOLE_GETCHAR = 0x2, SBI_EXT_0_1_CLEAR_IPI = 0x3, SBI_EXT_0_1_SEND_IPI = 0x4, SBI_EXT_0_1_REMOTE_FENCE_I = 0x5, SBI_EXT_0_1_REMOTE_SFENCE_VMA = 0x6, SBI_EXT_0_1_REMOTE_SFENCE_VMA_ASID = 0x7, SBI_EXT_0_1_SHUTDOWN = 0x8, #endif SBI_EXT_BASE = 0x10, SBI_EXT_TIME = 0x54494D45, SBI_EXT_IPI = 0x735049, SBI_EXT_RFENCE = 0x52464E43, SBI_EXT_HSM = 0x48534D, SBI_EXT_SRST = 0x53525354, SBI_EXT_SUSP = 0x53555350, SBI_EXT_PMU = 0x504D55, SBI_EXT_DBCN = 0x4442434E, SBI_EXT_STA = 0x535441, /* Experimentals extensions must lie within this range */ SBI_EXT_EXPERIMENTAL_START = 0x08000000, SBI_EXT_EXPERIMENTAL_END = 0x08FFFFFF, /* Vendor extensions must lie within this range */ SBI_EXT_VENDOR_START = 0x09000000, SBI_EXT_VENDOR_END = 0x09FFFFFF, }; enum sbi_ext_base_fid { SBI_EXT_BASE_GET_SPEC_VERSION = 0, SBI_EXT_BASE_GET_IMP_ID, SBI_EXT_BASE_GET_IMP_VERSION, SBI_EXT_BASE_PROBE_EXT, SBI_EXT_BASE_GET_MVENDORID, SBI_EXT_BASE_GET_MARCHID, SBI_EXT_BASE_GET_MIMPID, }; enum sbi_ext_time_fid { SBI_EXT_TIME_SET_TIMER = 0, }; enum sbi_ext_ipi_fid { SBI_EXT_IPI_SEND_IPI = 0, }; enum sbi_ext_rfence_fid { SBI_EXT_RFENCE_REMOTE_FENCE_I = 0, SBI_EXT_RFENCE_REMOTE_SFENCE_VMA, SBI_EXT_RFENCE_REMOTE_SFENCE_VMA_ASID, SBI_EXT_RFENCE_REMOTE_HFENCE_GVMA_VMID, SBI_EXT_RFENCE_REMOTE_HFENCE_GVMA, SBI_EXT_RFENCE_REMOTE_HFENCE_VVMA_ASID, SBI_EXT_RFENCE_REMOTE_HFENCE_VVMA, }; enum sbi_ext_hsm_fid { SBI_EXT_HSM_HART_START = 0, SBI_EXT_HSM_HART_STOP, SBI_EXT_HSM_HART_STATUS, SBI_EXT_HSM_HART_SUSPEND, }; enum sbi_hsm_hart_state { SBI_HSM_STATE_STARTED = 0, SBI_HSM_STATE_STOPPED, SBI_HSM_STATE_START_PENDING, SBI_HSM_STATE_STOP_PENDING, SBI_HSM_STATE_SUSPENDED, SBI_HSM_STATE_SUSPEND_PENDING, SBI_HSM_STATE_RESUME_PENDING, }; #define SBI_HSM_SUSP_BASE_MASK 0x7fffffff #define SBI_HSM_SUSP_NON_RET_BIT 0x80000000 #define SBI_HSM_SUSP_PLAT_BASE 0x10000000 #define SBI_HSM_SUSPEND_RET_DEFAULT 0x00000000 #define SBI_HSM_SUSPEND_RET_PLATFORM SBI_HSM_SUSP_PLAT_BASE #define SBI_HSM_SUSPEND_RET_LAST SBI_HSM_SUSP_BASE_MASK #define SBI_HSM_SUSPEND_NON_RET_DEFAULT SBI_HSM_SUSP_NON_RET_BIT #define SBI_HSM_SUSPEND_NON_RET_PLATFORM (SBI_HSM_SUSP_NON_RET_BIT | \ SBI_HSM_SUSP_PLAT_BASE) #define SBI_HSM_SUSPEND_NON_RET_LAST (SBI_HSM_SUSP_NON_RET_BIT | \ SBI_HSM_SUSP_BASE_MASK) enum sbi_ext_srst_fid { SBI_EXT_SRST_RESET = 0, }; enum sbi_srst_reset_type { SBI_SRST_RESET_TYPE_SHUTDOWN = 0, SBI_SRST_RESET_TYPE_COLD_REBOOT, SBI_SRST_RESET_TYPE_WARM_REBOOT, }; enum sbi_srst_reset_reason { SBI_SRST_RESET_REASON_NONE = 0, SBI_SRST_RESET_REASON_SYS_FAILURE, }; enum sbi_ext_susp_fid { SBI_EXT_SUSP_SYSTEM_SUSPEND = 0, }; enum sbi_ext_susp_sleep_type { SBI_SUSP_SLEEP_TYPE_SUSPEND_TO_RAM = 0, }; enum sbi_ext_pmu_fid { SBI_EXT_PMU_NUM_COUNTERS = 0, SBI_EXT_PMU_COUNTER_GET_INFO, SBI_EXT_PMU_COUNTER_CFG_MATCH, SBI_EXT_PMU_COUNTER_START, SBI_EXT_PMU_COUNTER_STOP, SBI_EXT_PMU_COUNTER_FW_READ, }; union sbi_pmu_ctr_info { unsigned long value; struct { unsigned long csr:12; unsigned long width:6; #if __riscv_xlen == 32 unsigned long reserved:13; #else unsigned long reserved:45; #endif unsigned long type:1; }; }; #define RISCV_PMU_RAW_EVENT_MASK GENMASK_ULL(47, 0) #define RISCV_PMU_RAW_EVENT_IDX 0x20000 /** General pmu event codes specified in SBI PMU extension */ enum sbi_pmu_hw_generic_events_t { SBI_PMU_HW_NO_EVENT = 0, SBI_PMU_HW_CPU_CYCLES = 1, SBI_PMU_HW_INSTRUCTIONS = 2, SBI_PMU_HW_CACHE_REFERENCES = 3, SBI_PMU_HW_CACHE_MISSES = 4, SBI_PMU_HW_BRANCH_INSTRUCTIONS = 5, SBI_PMU_HW_BRANCH_MISSES = 6, SBI_PMU_HW_BUS_CYCLES = 7, SBI_PMU_HW_STALLED_CYCLES_FRONTEND = 8, SBI_PMU_HW_STALLED_CYCLES_BACKEND = 9, SBI_PMU_HW_REF_CPU_CYCLES = 10, SBI_PMU_HW_GENERAL_MAX, }; /** * Special "firmware" events provided by the firmware, even if the hardware * does not support performance events. These events are encoded as a raw * event type in Linux kernel perf framework. */ enum sbi_pmu_fw_generic_events_t { SBI_PMU_FW_MISALIGNED_LOAD = 0, SBI_PMU_FW_MISALIGNED_STORE = 1, SBI_PMU_FW_ACCESS_LOAD = 2, SBI_PMU_FW_ACCESS_STORE = 3, SBI_PMU_FW_ILLEGAL_INSN = 4, SBI_PMU_FW_SET_TIMER = 5, SBI_PMU_FW_IPI_SENT = 6, SBI_PMU_FW_IPI_RCVD = 7, SBI_PMU_FW_FENCE_I_SENT = 8, SBI_PMU_FW_FENCE_I_RCVD = 9, SBI_PMU_FW_SFENCE_VMA_SENT = 10, SBI_PMU_FW_SFENCE_VMA_RCVD = 11, SBI_PMU_FW_SFENCE_VMA_ASID_SENT = 12, SBI_PMU_FW_SFENCE_VMA_ASID_RCVD = 13, SBI_PMU_FW_HFENCE_GVMA_SENT = 14, SBI_PMU_FW_HFENCE_GVMA_RCVD = 15, SBI_PMU_FW_HFENCE_GVMA_VMID_SENT = 16, SBI_PMU_FW_HFENCE_GVMA_VMID_RCVD = 17, SBI_PMU_FW_HFENCE_VVMA_SENT = 18, SBI_PMU_FW_HFENCE_VVMA_RCVD = 19, SBI_PMU_FW_HFENCE_VVMA_ASID_SENT = 20, SBI_PMU_FW_HFENCE_VVMA_ASID_RCVD = 21, SBI_PMU_FW_MAX, }; /* SBI PMU event types */ enum sbi_pmu_event_type { SBI_PMU_EVENT_TYPE_HW = 0x0, SBI_PMU_EVENT_TYPE_CACHE = 0x1, SBI_PMU_EVENT_TYPE_RAW = 0x2, SBI_PMU_EVENT_TYPE_FW = 0xf, }; /* SBI PMU event types */ enum sbi_pmu_ctr_type { SBI_PMU_CTR_TYPE_HW = 0x0, SBI_PMU_CTR_TYPE_FW, }; /* Helper macros to decode event idx */ #define SBI_PMU_EVENT_IDX_OFFSET 20 #define SBI_PMU_EVENT_IDX_MASK 0xFFFFF #define SBI_PMU_EVENT_IDX_CODE_MASK 0xFFFF #define SBI_PMU_EVENT_IDX_TYPE_MASK 0xF0000 #define SBI_PMU_EVENT_RAW_IDX 0x20000 #define SBI_PMU_FIXED_CTR_MASK 0x07 #define SBI_PMU_EVENT_CACHE_ID_CODE_MASK 0xFFF8 #define SBI_PMU_EVENT_CACHE_OP_ID_CODE_MASK 0x06 #define SBI_PMU_EVENT_CACHE_RESULT_ID_CODE_MASK 0x01 #define SBI_PMU_EVENT_CACHE_ID_SHIFT 3 #define SBI_PMU_EVENT_CACHE_OP_SHIFT 1 #define SBI_PMU_EVENT_IDX_INVALID 0xFFFFFFFF /* Flags defined for config matching function */ #define SBI_PMU_CFG_FLAG_SKIP_MATCH (1 << 0) #define SBI_PMU_CFG_FLAG_CLEAR_VALUE (1 << 1) #define SBI_PMU_CFG_FLAG_AUTO_START (1 << 2) #define SBI_PMU_CFG_FLAG_SET_VUINH (1 << 3) #define SBI_PMU_CFG_FLAG_SET_VSINH (1 << 4) #define SBI_PMU_CFG_FLAG_SET_UINH (1 << 5) #define SBI_PMU_CFG_FLAG_SET_SINH (1 << 6) #define SBI_PMU_CFG_FLAG_SET_MINH (1 << 7) /* Flags defined for counter start function */ #define SBI_PMU_START_FLAG_SET_INIT_VALUE (1 << 0) /* Flags defined for counter stop function */ #define SBI_PMU_STOP_FLAG_RESET (1 << 0) enum sbi_ext_dbcn_fid { SBI_EXT_DBCN_CONSOLE_WRITE = 0, SBI_EXT_DBCN_CONSOLE_READ = 1, SBI_EXT_DBCN_CONSOLE_WRITE_BYTE = 2, }; /* SBI STA (steal-time accounting) extension */ enum sbi_ext_sta_fid { SBI_EXT_STA_STEAL_TIME_SET_SHMEM = 0, }; struct sbi_sta_struct { __le32 sequence; __le32 flags; __le64 steal; u8 preempted; u8 pad[47]; } __packed; #define SBI_STA_SHMEM_DISABLE -1 /* SBI spec version fields */ #define SBI_SPEC_VERSION_DEFAULT 0x1 #define SBI_SPEC_VERSION_MAJOR_SHIFT 24 #define SBI_SPEC_VERSION_MAJOR_MASK 0x7f #define SBI_SPEC_VERSION_MINOR_MASK 0xffffff /* SBI return error codes */ #define SBI_SUCCESS 0 #define SBI_ERR_FAILURE -1 #define SBI_ERR_NOT_SUPPORTED -2 #define SBI_ERR_INVALID_PARAM -3 #define SBI_ERR_DENIED -4 #define SBI_ERR_INVALID_ADDRESS -5 #define SBI_ERR_ALREADY_AVAILABLE -6 #define SBI_ERR_ALREADY_STARTED -7 #define SBI_ERR_ALREADY_STOPPED -8 extern unsigned long sbi_spec_version; struct sbiret { long error; long value; }; void sbi_init(void); long __sbi_base_ecall(int fid); struct sbiret __sbi_ecall(unsigned long arg0, unsigned long arg1, unsigned long arg2, unsigned long arg3, unsigned long arg4, unsigned long arg5, int fid, int ext); #define sbi_ecall(e, f, a0, a1, a2, a3, a4, a5) \ __sbi_ecall(a0, a1, a2, a3, a4, a5, f, e) #ifdef CONFIG_RISCV_SBI_V01 void sbi_console_putchar(int ch); int sbi_console_getchar(void); #else static inline void sbi_console_putchar(int ch) { } static inline int sbi_console_getchar(void) { return -ENOENT; } #endif long sbi_get_mvendorid(void); long sbi_get_marchid(void); long sbi_get_mimpid(void); void sbi_set_timer(uint64_t stime_value); void sbi_shutdown(void); void sbi_send_ipi(unsigned int cpu); int sbi_remote_fence_i(const struct cpumask *cpu_mask); int sbi_remote_sfence_vma_asid(const struct cpumask *cpu_mask, unsigned long start, unsigned long size, unsigned long asid); int sbi_remote_hfence_gvma(const struct cpumask *cpu_mask, unsigned long start, unsigned long size); int sbi_remote_hfence_gvma_vmid(const struct cpumask *cpu_mask, unsigned long start, unsigned long size, unsigned long vmid); int sbi_remote_hfence_vvma(const struct cpumask *cpu_mask, unsigned long start, unsigned long size); int sbi_remote_hfence_vvma_asid(const struct cpumask *cpu_mask, unsigned long start, unsigned long size, unsigned long asid); long sbi_probe_extension(int ext); /* Check if current SBI specification version is 0.1 or not */ static inline int sbi_spec_is_0_1(void) { return (sbi_spec_version == SBI_SPEC_VERSION_DEFAULT) ? 1 : 0; } /* Get the major version of SBI */ static inline unsigned long sbi_major_version(void) { return (sbi_spec_version >> SBI_SPEC_VERSION_MAJOR_SHIFT) & SBI_SPEC_VERSION_MAJOR_MASK; } /* Get the minor version of SBI */ static inline unsigned long sbi_minor_version(void) { return sbi_spec_version & SBI_SPEC_VERSION_MINOR_MASK; } /* Make SBI version */ static inline unsigned long sbi_mk_version(unsigned long major, unsigned long minor) { return ((major & SBI_SPEC_VERSION_MAJOR_MASK) << SBI_SPEC_VERSION_MAJOR_SHIFT) | minor; } static inline int sbi_err_map_linux_errno(int err) { switch (err) { case SBI_SUCCESS: return 0; case SBI_ERR_DENIED: return -EPERM; case SBI_ERR_INVALID_PARAM: return -EINVAL; case SBI_ERR_INVALID_ADDRESS: return -EFAULT; case SBI_ERR_NOT_SUPPORTED: case SBI_ERR_FAILURE: default: return -ENOTSUPP; }; } extern bool sbi_debug_console_available; int sbi_debug_console_write(const char *bytes, unsigned int num_bytes); int sbi_debug_console_read(char *bytes, unsigned int num_bytes); #else /* CONFIG_RISCV_SBI */ static inline int sbi_remote_fence_i(const struct cpumask *cpu_mask) { return -1; } static inline void sbi_init(void) {} #endif /* CONFIG_RISCV_SBI */ unsigned long riscv_get_mvendorid(void); unsigned long riscv_get_marchid(void); unsigned long riscv_cached_mvendorid(unsigned int cpu_id); unsigned long riscv_cached_marchid(unsigned int cpu_id); unsigned long riscv_cached_mimpid(unsigned int cpu_id); #if IS_ENABLED(CONFIG_SMP) && IS_ENABLED(CONFIG_RISCV_SBI) void sbi_ipi_init(void); #else static inline void sbi_ipi_init(void) { } #endif #endif /* _ASM_RISCV_SBI_H */
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