sbi.h 3.3 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. #ifdef CONFIG_SBI_V01
  13. SBI_EXT_0_1_SET_TIMER = 0x0,
  14. SBI_EXT_0_1_CONSOLE_PUTCHAR = 0x1,
  15. SBI_EXT_0_1_CONSOLE_GETCHAR = 0x2,
  16. SBI_EXT_0_1_CLEAR_IPI = 0x3,
  17. SBI_EXT_0_1_SEND_IPI = 0x4,
  18. SBI_EXT_0_1_REMOTE_FENCE_I = 0x5,
  19. SBI_EXT_0_1_REMOTE_SFENCE_VMA = 0x6,
  20. SBI_EXT_0_1_REMOTE_SFENCE_VMA_ASID = 0x7,
  21. SBI_EXT_0_1_SHUTDOWN = 0x8,
  22. #endif
  23. SBI_EXT_BASE = 0x10,
  24. SBI_EXT_TIME = 0x54494D45,
  25. SBI_EXT_IPI = 0x735049,
  26. SBI_EXT_RFENCE = 0x52464E43,
  27. };
  28. enum sbi_ext_base_fid {
  29. SBI_EXT_BASE_GET_SPEC_VERSION = 0,
  30. SBI_EXT_BASE_GET_IMP_ID,
  31. SBI_EXT_BASE_GET_IMP_VERSION,
  32. SBI_EXT_BASE_PROBE_EXT,
  33. SBI_EXT_BASE_GET_MVENDORID,
  34. SBI_EXT_BASE_GET_MARCHID,
  35. SBI_EXT_BASE_GET_MIMPID,
  36. };
  37. enum sbi_ext_time_fid {
  38. SBI_EXT_TIME_SET_TIMER = 0,
  39. };
  40. enum sbi_ext_ipi_fid {
  41. SBI_EXT_IPI_SEND_IPI = 0,
  42. };
  43. enum sbi_ext_rfence_fid {
  44. SBI_EXT_RFENCE_REMOTE_FENCE_I = 0,
  45. SBI_EXT_RFENCE_REMOTE_SFENCE_VMA,
  46. SBI_EXT_RFENCE_REMOTE_SFENCE_VMA_ASID,
  47. };
  48. #ifdef CONFIG_SBI_V01
  49. #define SBI_EXT_SET_TIMER SBI_EXT_0_1_SET_TIMER
  50. #define SBI_FID_SET_TIMER 0
  51. #define SBI_EXT_SEND_IPI SBI_EXT_0_1_SEND_IPI
  52. #define SBI_FID_SEND_IPI 0
  53. #define SBI_EXT_REMOTE_FENCE_I SBI_EXT_0_1_REMOTE_FENCE_I
  54. #define SBI_FID_REMOTE_FENCE_I 0
  55. #define SBI_EXT_REMOTE_SFENCE_VMA SBI_EXT_0_1_REMOTE_SFENCE_VMA
  56. #define SBI_FID_REMOTE_SFENCE_VMA 0
  57. #define SBI_EXT_REMOTE_SFENCE_VMA_ASID SBI_EXT_0_1_REMOTE_SFENCE_VMA_ASID
  58. #define SBI_FID_REMOTE_SFENCE_VMA_ASID 0
  59. #else
  60. #define SBI_EXT_SET_TIMER SBI_EXT_TIME
  61. #define SBI_FID_SET_TIMER SBI_EXT_TIME_SET_TIMER
  62. #define SBI_EXT_SEND_IPI SBI_EXT_IPI
  63. #define SBI_FID_SEND_IPI SBI_EXT_IPI_SEND_IPI
  64. #define SBI_EXT_REMOTE_FENCE_I SBI_EXT_RFENCE
  65. #define SBI_FID_REMOTE_FENCE_I SBI_EXT_RFENCE_REMOTE_FENCE_I
  66. #define SBI_EXT_REMOTE_SFENCE_VMA SBI_EXT_RFENCE
  67. #define SBI_FID_REMOTE_SFENCE_VMA SBI_EXT_RFENCE_REMOTE_SFENCE_VMA
  68. #define SBI_EXT_REMOTE_SFENCE_VMA_ASID SBI_EXT_RFENCE
  69. #define SBI_FID_REMOTE_SFENCE_VMA_ASID SBI_EXT_RFENCE_REMOTE_SFENCE_VMA_ASID
  70. #endif
  71. #define SBI_SPEC_VERSION_MAJOR_SHIFT 24
  72. #define SBI_SPEC_VERSION_MAJOR_MASK 0x7f
  73. #define SBI_SPEC_VERSION_MINOR_MASK 0xffffff
  74. /* SBI return error codes */
  75. #define SBI_SUCCESS 0
  76. #define SBI_ERR_FAILURE -1
  77. #define SBI_ERR_NOT_SUPPORTED -2
  78. #define SBI_ERR_INVALID_PARAM -3
  79. #define SBI_ERR_DENIED -4
  80. #define SBI_ERR_INVALID_ADDRESS -5
  81. struct sbiret {
  82. long error;
  83. long value;
  84. };
  85. struct sbiret sbi_ecall(int ext, int fid, unsigned long arg0,
  86. unsigned long arg1, unsigned long arg2,
  87. unsigned long arg3, unsigned long arg4,
  88. unsigned long arg5);
  89. #ifdef CONFIG_SBI_V01
  90. void sbi_console_putchar(int ch);
  91. int sbi_console_getchar(void);
  92. void sbi_clear_ipi(void);
  93. void sbi_shutdown(void);
  94. void sbi_send_ipi(const unsigned long *hart_mask);
  95. void sbi_remote_fence_i(const unsigned long *hart_mask);
  96. void sbi_remote_sfence_vma(const unsigned long *hart_mask,
  97. unsigned long start,
  98. unsigned long size);
  99. void sbi_remote_sfence_vma_asid(const unsigned long *hart_mask,
  100. unsigned long start,
  101. unsigned long size,
  102. unsigned long asid);
  103. #endif
  104. void sbi_set_timer(uint64_t stime_value);
  105. int sbi_probe_extension(int ext);
  106. #endif