sbi.h 2.4 KB

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  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. #ifndef _ASM_RISCV_SBI_H
  9. #define _ASM_RISCV_SBI_H
  10. #include <linux/types.h>
  11. enum sbi_ext_id {
  12. SBI_EXT_0_1_SET_TIMER = 0x0,
  13. SBI_EXT_0_1_CONSOLE_PUTCHAR = 0x1,
  14. SBI_EXT_0_1_CONSOLE_GETCHAR = 0x2,
  15. SBI_EXT_0_1_CLEAR_IPI = 0x3,
  16. SBI_EXT_0_1_SEND_IPI = 0x4,
  17. SBI_EXT_0_1_REMOTE_FENCE_I = 0x5,
  18. SBI_EXT_0_1_REMOTE_SFENCE_VMA = 0x6,
  19. SBI_EXT_0_1_REMOTE_SFENCE_VMA_ASID = 0x7,
  20. SBI_EXT_0_1_SHUTDOWN = 0x8,
  21. SBI_EXT_BASE = 0x10,
  22. SBI_EXT_TIME = 0x54494D45,
  23. SBI_EXT_IPI = 0x735049,
  24. SBI_EXT_RFENCE = 0x52464E43,
  25. };
  26. enum sbi_ext_base_fid {
  27. SBI_EXT_BASE_GET_SPEC_VERSION = 0,
  28. SBI_EXT_BASE_GET_IMP_ID,
  29. SBI_EXT_BASE_GET_IMP_VERSION,
  30. SBI_EXT_BASE_PROBE_EXT,
  31. SBI_EXT_BASE_GET_MVENDORID,
  32. SBI_EXT_BASE_GET_MARCHID,
  33. SBI_EXT_BASE_GET_MIMPID,
  34. };
  35. enum sbi_ext_time_fid {
  36. SBI_EXT_TIME_SET_TIMER = 0,
  37. };
  38. enum sbi_ext_ipi_fid {
  39. SBI_EXT_IPI_SEND_IPI = 0,
  40. };
  41. enum sbi_ext_rfence_fid {
  42. SBI_EXT_RFENCE_REMOTE_FENCE_I = 0,
  43. SBI_EXT_RFENCE_REMOTE_SFENCE_VMA,
  44. SBI_EXT_RFENCE_REMOTE_SFENCE_VMA_ASID,
  45. };
  46. #define SBI_SPEC_VERSION_DEFAULT 0x1
  47. #define SBI_SPEC_VERSION_MAJOR_SHIFT 24
  48. #define SBI_SPEC_VERSION_MAJOR_MASK 0x7f
  49. #define SBI_SPEC_VERSION_MINOR_MASK 0xffffff
  50. /* SBI return error codes */
  51. #define SBI_SUCCESS 0
  52. #define SBI_ERR_FAILURE -1
  53. #define SBI_ERR_NOT_SUPPORTED -2
  54. #define SBI_ERR_INVALID_PARAM -3
  55. #define SBI_ERR_DENIED -4
  56. #define SBI_ERR_INVALID_ADDRESS -5
  57. extern unsigned long sbi_spec_version;
  58. struct sbiret {
  59. long error;
  60. long value;
  61. };
  62. struct sbiret sbi_ecall(int ext, int fid, unsigned long arg0,
  63. unsigned long arg1, unsigned long arg2,
  64. unsigned long arg3, unsigned long arg4,
  65. unsigned long arg5);
  66. void sbi_console_putchar(int ch);
  67. int sbi_console_getchar(void);
  68. void sbi_clear_ipi(void);
  69. void sbi_shutdown(void);
  70. void sbi_set_timer(uint64_t stime_value);
  71. void sbi_send_ipi(const unsigned long *hart_mask);
  72. void sbi_remote_fence_i(const unsigned long *hart_mask);
  73. void sbi_remote_sfence_vma(const unsigned long *hart_mask,
  74. unsigned long start,
  75. unsigned long size);
  76. void sbi_remote_sfence_vma_asid(const unsigned long *hart_mask,
  77. unsigned long start,
  78. unsigned long size,
  79. unsigned long asid);
  80. int sbi_probe_extension(int ext);
  81. #endif