/* 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 = 0 x0,
SBI_EXT_0_1_CONSOLE_PUTCHAR = 0 x1,
SBI_EXT_0_1_CONSOLE_GETCHAR = 0 x2,
SBI_EXT_0_1_CLEAR_IPI = 0 x3,
SBI_EXT_0_1_SEND_IPI = 0 x4,
SBI_EXT_0_1_REMOTE_FENCE_I = 0 x5,
SBI_EXT_0_1_REMOTE_SFENCE_VMA = 0 x6,
SBI_EXT_0_1_REMOTE_SFENCE_VMA_ASID = 0 x7,
SBI_EXT_0_1_SHUTDOWN = 0 x8,
#endif
SBI_EXT_BASE = 0 x10,
SBI_EXT_TIME = 0 x54494D45,
SBI_EXT_IPI = 0 x735049,
SBI_EXT_RFENCE = 0 x52464E43,
SBI_EXT_HSM = 0 x48534D,
SBI_EXT_SRST = 0 x53525354,
SBI_EXT_SUSP = 0 x53555350,
SBI_EXT_PMU = 0 x504D55,
SBI_EXT_DBCN = 0 x4442434E,
SBI_EXT_STA = 0 x535441,
SBI_EXT_NACL = 0 x4E41434C,
SBI_EXT_FWFT = 0 x46574654,
/* Experimentals extensions must lie within this range */
SBI_EXT_EXPERIMENTAL_START = 0 x08000000,
SBI_EXT_EXPERIMENTAL_END = 0 x08FFFFFF,
/* Vendor extensions must lie within this range */
SBI_EXT_VENDOR_START = 0 x09000000,
SBI_EXT_VENDOR_END = 0 x09FFFFFF,
};
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 0 x7fffffff
#define SBI_HSM_SUSP_NON_RET_BIT 0 x80000000
#define SBI_HSM_SUSP_PLAT_BASE 0 x10000000
#define SBI_HSM_SUSPEND_RET_DEFAULT 0 x00000000
#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,
SBI_EXT_PMU_COUNTER_FW_READ_HI,
SBI_EXT_PMU_SNAPSHOT_SET_SHMEM,
};
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 ;
};
};
/* Data structure to contain the pmu snapshot data */
struct riscv_pmu_snapshot_data {
u64 ctr_overflow_mask;
u64 ctr_values[64 ];
u64 reserved[447 ];
};
#define RISCV_PMU_RAW_EVENT_MASK GENMASK_ULL(47 , 0 )
#define RISCV_PMU_PLAT_FW_EVENT_MASK GENMASK_ULL(61 , 0 )
#define RISCV_PMU_RAW_EVENT_IDX 0 x20000
#define RISCV_PLAT_FW_EVENT 0 xFFFF
/** 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 = 0 x0,
SBI_PMU_EVENT_TYPE_CACHE = 0 x1,
SBI_PMU_EVENT_TYPE_RAW = 0 x2,
SBI_PMU_EVENT_TYPE_FW = 0 xf,
};
/* SBI PMU event types */
enum sbi_pmu_ctr_type {
SBI_PMU_CTR_TYPE_HW = 0 x0,
SBI_PMU_CTR_TYPE_FW,
};
/* Helper macros to decode event idx */
#define SBI_PMU_EVENT_IDX_OFFSET 20
#define SBI_PMU_EVENT_IDX_MASK 0 xFFFFF
#define SBI_PMU_EVENT_IDX_CODE_MASK 0 xFFFF
#define SBI_PMU_EVENT_IDX_TYPE_MASK 0 xF0000
#define SBI_PMU_EVENT_RAW_IDX 0 x20000
#define SBI_PMU_FIXED_CTR_MASK 0 x07
#define SBI_PMU_EVENT_CACHE_ID_CODE_MASK 0 xFFF8
#define SBI_PMU_EVENT_CACHE_OP_ID_CODE_MASK 0 x06
#define SBI_PMU_EVENT_CACHE_RESULT_ID_CODE_MASK 0 x01
#define SBI_PMU_EVENT_CACHE_ID_SHIFT 3
#define SBI_PMU_EVENT_CACHE_OP_SHIFT 1
#define SBI_PMU_EVENT_IDX_INVALID 0 xFFFFFFFF
/* Flags defined for config matching function */
#define SBI_PMU_CFG_FLAG_SKIP_MATCH BIT(0 )
#define SBI_PMU_CFG_FLAG_CLEAR_VALUE BIT(1 )
#define SBI_PMU_CFG_FLAG_AUTO_START BIT(2 )
#define SBI_PMU_CFG_FLAG_SET_VUINH BIT(3 )
#define SBI_PMU_CFG_FLAG_SET_VSINH BIT(4 )
#define SBI_PMU_CFG_FLAG_SET_UINH BIT(5 )
#define SBI_PMU_CFG_FLAG_SET_SINH BIT(6 )
#define SBI_PMU_CFG_FLAG_SET_MINH BIT(7 )
/* Flags defined for counter start function */
#define SBI_PMU_START_FLAG_SET_INIT_VALUE BIT(0 )
#define SBI_PMU_START_FLAG_INIT_SNAPSHOT BIT(1 )
/* Flags defined for counter stop function */
#define SBI_PMU_STOP_FLAG_RESET BIT(0 )
#define SBI_PMU_STOP_FLAG_TAKE_SNAPSHOT BIT(1 )
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_SHMEM_DISABLE -1
enum sbi_ext_nacl_fid {
SBI_EXT_NACL_PROBE_FEATURE = 0 x0,
SBI_EXT_NACL_SET_SHMEM = 0 x1,
SBI_EXT_NACL_SYNC_CSR = 0 x2,
SBI_EXT_NACL_SYNC_HFENCE = 0 x3,
SBI_EXT_NACL_SYNC_SRET = 0 x4,
};
enum sbi_ext_nacl_feature {
SBI_NACL_FEAT_SYNC_CSR = 0 x0,
SBI_NACL_FEAT_SYNC_HFENCE = 0 x1,
SBI_NACL_FEAT_SYNC_SRET = 0 x2,
SBI_NACL_FEAT_AUTOSWAP_CSR = 0 x3,
};
#define SBI_NACL_SHMEM_ADDR_SHIFT 12
#define SBI_NACL_SHMEM_SCRATCH_OFFSET 0 x0000
#define SBI_NACL_SHMEM_SCRATCH_SIZE 0 x1000
#define SBI_NACL_SHMEM_SRET_OFFSET 0 x0000
#define SBI_NACL_SHMEM_SRET_SIZE 0 x0200
#define SBI_NACL_SHMEM_AUTOSWAP_OFFSET (SBI_NACL_SHMEM_SRET_OFFSET + \
SBI_NACL_SHMEM_SRET_SIZE)
#define SBI_NACL_SHMEM_AUTOSWAP_SIZE 0 x0080
#define SBI_NACL_SHMEM_UNUSED_OFFSET (SBI_NACL_SHMEM_AUTOSWAP_OFFSET + \
SBI_NACL_SHMEM_AUTOSWAP_SIZE)
#define SBI_NACL_SHMEM_UNUSED_SIZE 0 x0580
#define SBI_NACL_SHMEM_HFENCE_OFFSET (SBI_NACL_SHMEM_UNUSED_OFFSET + \
SBI_NACL_SHMEM_UNUSED_SIZE)
#define SBI_NACL_SHMEM_HFENCE_SIZE 0 x0780
#define SBI_NACL_SHMEM_DBITMAP_OFFSET (SBI_NACL_SHMEM_HFENCE_OFFSET + \
SBI_NACL_SHMEM_HFENCE_SIZE)
#define SBI_NACL_SHMEM_DBITMAP_SIZE 0 x0080
#define SBI_NACL_SHMEM_CSR_OFFSET (SBI_NACL_SHMEM_DBITMAP_OFFSET + \
SBI_NACL_SHMEM_DBITMAP_SIZE)
#define SBI_NACL_SHMEM_CSR_SIZE ((__riscv_xlen / 8 ) * 1024 )
#define SBI_NACL_SHMEM_SIZE (SBI_NACL_SHMEM_CSR_OFFSET + \
SBI_NACL_SHMEM_CSR_SIZE)
#define SBI_NACL_SHMEM_CSR_INDEX(__csr_num) \
((((__csr_num) & 0 xc00) >> 2 ) | ((__csr_num) & 0 xff))
#define SBI_NACL_SHMEM_HFENCE_ENTRY_SZ ((__riscv_xlen / 8 ) * 4 )
#define SBI_NACL_SHMEM_HFENCE_ENTRY_MAX \
(SBI_NACL_SHMEM_HFENCE_SIZE / \
SBI_NACL_SHMEM_HFENCE_ENTRY_SZ)
#define SBI_NACL_SHMEM_HFENCE_ENTRY(__num) \
(SBI_NACL_SHMEM_HFENCE_OFFSET + \
(__num) * SBI_NACL_SHMEM_HFENCE_ENTRY_SZ)
#define SBI_NACL_SHMEM_HFENCE_ENTRY_CONFIG(__num) \
SBI_NACL_SHMEM_HFENCE_ENTRY(__num)
#define SBI_NACL_SHMEM_HFENCE_ENTRY_PNUM(__num)\
(SBI_NACL_SHMEM_HFENCE_ENTRY(__num) + (__riscv_xlen / 8 ))
#define SBI_NACL_SHMEM_HFENCE_ENTRY_PCOUNT(__num)\
(SBI_NACL_SHMEM_HFENCE_ENTRY(__num) + \
((__riscv_xlen / 8 ) * 3 ))
#define SBI_NACL_SHMEM_HFENCE_CONFIG_PEND_BITS 1
#define SBI_NACL_SHMEM_HFENCE_CONFIG_PEND_SHIFT \
(__riscv_xlen - SBI_NACL_SHMEM_HFENCE_CONFIG_PEND_BITS)
#define SBI_NACL_SHMEM_HFENCE_CONFIG_PEND_MASK \
((1 UL << SBI_NACL_SHMEM_HFENCE_CONFIG_PEND_BITS) - 1 )
#define SBI_NACL_SHMEM_HFENCE_CONFIG_PEND \
(SBI_NACL_SHMEM_HFENCE_CONFIG_PEND_MASK << \
SBI_NACL_SHMEM_HFENCE_CONFIG_PEND_SHIFT)
#define SBI_NACL_SHMEM_HFENCE_CONFIG_RSVD1_BITS 3
#define SBI_NACL_SHMEM_HFENCE_CONFIG_RSVD1_SHIFT \
(SBI_NACL_SHMEM_HFENCE_CONFIG_PEND_SHIFT - \
SBI_NACL_SHMEM_HFENCE_CONFIG_RSVD1_BITS)
#define SBI_NACL_SHMEM_HFENCE_CONFIG_TYPE_BITS 4
#define SBI_NACL_SHMEM_HFENCE_CONFIG_TYPE_SHIFT \
(SBI_NACL_SHMEM_HFENCE_CONFIG_RSVD1_SHIFT - \
SBI_NACL_SHMEM_HFENCE_CONFIG_TYPE_BITS)
#define SBI_NACL_SHMEM_HFENCE_CONFIG_TYPE_MASK \
((1 UL << SBI_NACL_SHMEM_HFENCE_CONFIG_TYPE_BITS) - 1 )
#define SBI_NACL_SHMEM_HFENCE_TYPE_GVMA 0 x0
#define SBI_NACL_SHMEM_HFENCE_TYPE_GVMA_ALL 0 x1
#define SBI_NACL_SHMEM_HFENCE_TYPE_GVMA_VMID 0 x2
#define SBI_NACL_SHMEM_HFENCE_TYPE_GVMA_VMID_ALL 0 x3
#define SBI_NACL_SHMEM_HFENCE_TYPE_VVMA 0 x4
#define SBI_NACL_SHMEM_HFENCE_TYPE_VVMA_ALL 0 x5
#define SBI_NACL_SHMEM_HFENCE_TYPE_VVMA_ASID 0 x6
#define SBI_NACL_SHMEM_HFENCE_TYPE_VVMA_ASID_ALL 0 x7
#define SBI_NACL_SHMEM_HFENCE_CONFIG_RSVD2_BITS 1
#define SBI_NACL_SHMEM_HFENCE_CONFIG_RSVD2_SHIFT \
(SBI_NACL_SHMEM_HFENCE_CONFIG_TYPE_SHIFT - \
SBI_NACL_SHMEM_HFENCE_CONFIG_RSVD2_BITS)
#define SBI_NACL_SHMEM_HFENCE_CONFIG_ORDER_BITS 7
#define SBI_NACL_SHMEM_HFENCE_CONFIG_ORDER_SHIFT \
(SBI_NACL_SHMEM_HFENCE_CONFIG_RSVD2_SHIFT - \
SBI_NACL_SHMEM_HFENCE_CONFIG_ORDER_BITS)
#define SBI_NACL_SHMEM_HFENCE_CONFIG_ORDER_MASK \
((1 UL << SBI_NACL_SHMEM_HFENCE_CONFIG_ORDER_BITS) - 1 )
#define SBI_NACL_SHMEM_HFENCE_ORDER_BASE 12
#if __riscv_xlen == 32
#define SBI_NACL_SHMEM_HFENCE_CONFIG_ASID_BITS 9
#define SBI_NACL_SHMEM_HFENCE_CONFIG_VMID_BITS 7
#else
#define SBI_NACL_SHMEM_HFENCE_CONFIG_ASID_BITS 16
#define SBI_NACL_SHMEM_HFENCE_CONFIG_VMID_BITS 14
#endif
#define SBI_NACL_SHMEM_HFENCE_CONFIG_VMID_SHIFT \
SBI_NACL_SHMEM_HFENCE_CONFIG_ASID_BITS
#define SBI_NACL_SHMEM_HFENCE_CONFIG_ASID_MASK \
((1 UL << SBI_NACL_SHMEM_HFENCE_CONFIG_ASID_BITS) - 1 )
#define SBI_NACL_SHMEM_HFENCE_CONFIG_VMID_MASK \
((1 UL << SBI_NACL_SHMEM_HFENCE_CONFIG_VMID_BITS) - 1 )
#define SBI_NACL_SHMEM_AUTOSWAP_FLAG_HSTATUS BIT(0 )
#define SBI_NACL_SHMEM_AUTOSWAP_HSTATUS ((__riscv_xlen / 8 ) * 1 )
#define SBI_NACL_SHMEM_SRET_X(__i) ((__riscv_xlen / 8 ) * (__i))
#define SBI_NACL_SHMEM_SRET_X_LAST 31
/* SBI function IDs for FW feature extension */
#define SBI_EXT_FWFT_SET 0 x0
#define SBI_EXT_FWFT_GET 0 x1
enum sbi_fwft_feature_t {
SBI_FWFT_MISALIGNED_EXC_DELEG = 0 x0,
SBI_FWFT_LANDING_PAD = 0 x1,
SBI_FWFT_SHADOW_STACK = 0 x2,
SBI_FWFT_DOUBLE_TRAP = 0 x3,
SBI_FWFT_PTE_AD_HW_UPDATING = 0 x4,
SBI_FWFT_POINTER_MASKING_PMLEN = 0 x5,
SBI_FWFT_LOCAL_RESERVED_START = 0 x6,
SBI_FWFT_LOCAL_RESERVED_END = 0 x3fffffff,
SBI_FWFT_LOCAL_PLATFORM_START = 0 x40000000,
SBI_FWFT_LOCAL_PLATFORM_END = 0 x7fffffff,
SBI_FWFT_GLOBAL_RESERVED_START = 0 x80000000,
SBI_FWFT_GLOBAL_RESERVED_END = 0 xbfffffff,
SBI_FWFT_GLOBAL_PLATFORM_START = 0 xc0000000,
SBI_FWFT_GLOBAL_PLATFORM_END = 0 xffffffff,
};
#define SBI_FWFT_PLATFORM_FEATURE_BIT BIT(30 )
#define SBI_FWFT_GLOBAL_FEATURE_BIT BIT(31 )
#define SBI_FWFT_SET_FLAG_LOCK BIT(0 )
/* SBI spec version fields */
#define SBI_SPEC_VERSION_DEFAULT 0 x1
#define SBI_SPEC_VERSION_MAJOR_SHIFT 24
#define SBI_SPEC_VERSION_MAJOR_MASK 0 x7f
#define SBI_SPEC_VERSION_MINOR_MASK 0 xffffff
/* 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
#define SBI_ERR_NO_SHMEM -9
#define SBI_ERR_INVALID_STATE -10
#define SBI_ERR_BAD_RANGE -11
#define SBI_ERR_TIMEOUT -12
#define SBI_ERR_IO -13
#define SBI_ERR_DENIED_LOCKED -14
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);
int sbi_fwft_set(u32 feature, unsigned long value, unsigned long flags);
int sbi_fwft_set_cpumask(const cpumask_t *mask, u32 feature,
unsigned long value, unsigned long flags);
/**
* sbi_fwft_set_online_cpus() - Set a feature on all online cpus
* @feature: The feature to be set
* @value: The feature value to be set
* @flags: FWFT feature set flags
*
* Return: 0 on success, appropriate linux error code otherwise.
*/
static inline int sbi_fwft_set_online_cpus(u32 feature, unsigned long value,
unsigned long flags)
{
return sbi_fwft_set_cpumask(cpu_online_mask, feature, value, flags);
}
/* 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 & SBI_SPEC_VERSION_MINOR_MASK);
}
static inline int sbi_err_map_linux_errno(int err)
{
switch (err) {
case SBI_SUCCESS:
return 0 ;
case SBI_ERR_DENIED:
case SBI_ERR_DENIED_LOCKED:
return -EPERM;
case SBI_ERR_INVALID_PARAM:
case SBI_ERR_INVALID_STATE:
return -EINVAL;
case SBI_ERR_BAD_RANGE:
return -ERANGE;
case SBI_ERR_INVALID_ADDRESS:
return -EFAULT;
case SBI_ERR_NO_SHMEM:
return -ENOMEM;
case SBI_ERR_TIMEOUT:
return -ETIMEDOUT;
case SBI_ERR_IO:
return -EIO;
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)
DECLARE_STATIC_KEY_FALSE(riscv_sbi_for_rfence);
#define riscv_use_sbi_for_rfence() \
static_branch_unlikely(&riscv_sbi_for_rfence)
void sbi_ipi_init(void );
#else
static inline bool riscv_use_sbi_for_rfence(void ) { return false ; }
static inline void sbi_ipi_init(void ) { }
#endif
#endif /* _ASM_RISCV_SBI_H */
Messung V0.5 in Prozent C=95 H=89 G=91
¤ Dauer der Verarbeitung: 0.13 Sekunden
(vorverarbeitet am 2026-06-05)
¤
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