arch/riscv/include/asm/sbi.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  * Copyright (C) 2015 Regents of the University of California
   4  * Copyright (c) 2020 Western Digital Corporation or its affiliates.
   5  *
   6  * Taken from Linux arch/riscv/include/asm/sbi.h
   7  */
   8
   9 #ifndef _ASM_RISCV_SBI_H
  10 #define _ASM_RISCV_SBI_H
  11
  12 #include <linux/types.h>
  13
  14 enum sbi_ext_id {
  15         SBI_EXT_0_1_SET_TIMER = 0x0,
  16         SBI_EXT_0_1_CONSOLE_PUTCHAR = 0x1,
  17         SBI_EXT_0_1_CONSOLE_GETCHAR = 0x2,
  18         SBI_EXT_0_1_CLEAR_IPI = 0x3,
  19         SBI_EXT_0_1_SEND_IPI = 0x4,
  20         SBI_EXT_0_1_REMOTE_FENCE_I = 0x5,
  21         SBI_EXT_0_1_REMOTE_SFENCE_VMA = 0x6,
  22         SBI_EXT_0_1_REMOTE_SFENCE_VMA_ASID = 0x7,
  23         SBI_EXT_0_1_SHUTDOWN = 0x8,
  24         SBI_EXT_BASE = 0x10,
  25 };
  26
  27 enum sbi_ext_base_fid {
  28         SBI_EXT_BASE_GET_SPEC_VERSION = 0,
  29         SBI_EXT_BASE_GET_IMP_ID,
  30         SBI_EXT_BASE_GET_IMP_VERSION,
  31         SBI_EXT_BASE_PROBE_EXT,
  32         SBI_EXT_BASE_GET_MVENDORID,
  33         SBI_EXT_BASE_GET_MARCHID,
  34         SBI_EXT_BASE_GET_MIMPID,
  35 };
  36
  37 #define SBI_SPEC_VERSION_DEFAULT        0x1
  38 #define SBI_SPEC_VERSION_MAJOR_SHIFT    24
  39 #define SBI_SPEC_VERSION_MAJOR_MASK     0x7f
  40 #define SBI_SPEC_VERSION_MINOR_MASK     0xffffff
  41
  42 /* SBI return error codes */
  43 #define SBI_SUCCESS                     0
  44 #define SBI_ERR_FAILURE                 -1
  45 #define SBI_ERR_NOT_SUPPORTED           -2
  46 #define SBI_ERR_INVALID_PARAM           -3
  47 #define SBI_ERR_DENIED                  -4
  48 #define SBI_ERR_INVALID_ADDRESS         -5
  49
  50 extern unsigned long sbi_spec_version;
  51 struct sbiret {
  52         long error;
  53         long value;
  54 };
  55
  56 struct sbiret sbi_ecall(int ext, int fid, unsigned long arg0,
  57                         unsigned long arg1, unsigned long arg2,
  58                         unsigned long arg3, unsigned long arg4,
  59                         unsigned long arg5);
  60
  61 void sbi_console_putchar(int ch);
  62 int sbi_console_getchar(void);
  63 void sbi_clear_ipi(void);
  64 void sbi_shutdown(void);
  65 void sbi_set_timer(uint64_t stime_value);
  66 void sbi_send_ipi(const unsigned long *hart_mask);
  67 void sbi_remote_fence_i(const unsigned long *hart_mask);
  68 void sbi_remote_sfence_vma(const unsigned long *hart_mask,
  69                            unsigned long start,
  70                            unsigned long size);
  71 void sbi_remote_sfence_vma_asid(const unsigned long *hart_mask,
  72                                 unsigned long start,
  73                                 unsigned long size,
  74                                 unsigned long asid);
  75
  76 int sbi_probe_extension(int ext);
  77
  78 #endif