|
@@ -1,6 +1,7 @@
|
|
|
/* SPDX-License-Identifier: GPL-2.0 */
|
|
|
/*
|
|
|
* Copyright (C) 2015 Regents of the University of California
|
|
|
+ * Copyright (c) 2020 Western Digital Corporation or its affiliates.
|
|
|
*
|
|
|
* Taken from Linux arch/riscv/include/asm/sbi.h
|
|
|
*/
|
|
@@ -10,85 +11,113 @@
|
|
|
|
|
|
#include <linux/types.h>
|
|
|
|
|
|
-#define SBI_SET_TIMER 0
|
|
|
-#define SBI_CONSOLE_PUTCHAR 1
|
|
|
-#define SBI_CONSOLE_GETCHAR 2
|
|
|
-#define SBI_CLEAR_IPI 3
|
|
|
-#define SBI_SEND_IPI 4
|
|
|
-#define SBI_REMOTE_FENCE_I 5
|
|
|
-#define SBI_REMOTE_SFENCE_VMA 6
|
|
|
-#define SBI_REMOTE_SFENCE_VMA_ASID 7
|
|
|
-#define SBI_SHUTDOWN 8
|
|
|
+enum sbi_ext_id {
|
|
|
+#ifdef CONFIG_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,
|
|
|
+};
|
|
|
|
|
|
-#define SBI_CALL(which, arg0, arg1, arg2) ({ \
|
|
|
- register uintptr_t a0 asm ("a0") = (uintptr_t)(arg0); \
|
|
|
- register uintptr_t a1 asm ("a1") = (uintptr_t)(arg1); \
|
|
|
- register uintptr_t a2 asm ("a2") = (uintptr_t)(arg2); \
|
|
|
- register uintptr_t a7 asm ("a7") = (uintptr_t)(which); \
|
|
|
- asm volatile ("ecall" \
|
|
|
- : "+r" (a0) \
|
|
|
- : "r" (a1), "r" (a2), "r" (a7) \
|
|
|
- : "memory"); \
|
|
|
- a0; \
|
|
|
-})
|
|
|
+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,
|
|
|
+};
|
|
|
|
|
|
-/* Lazy implementations until SBI is finalized */
|
|
|
-#define SBI_CALL_0(which) SBI_CALL(which, 0, 0, 0)
|
|
|
-#define SBI_CALL_1(which, arg0) SBI_CALL(which, arg0, 0, 0)
|
|
|
-#define SBI_CALL_2(which, arg0, arg1) SBI_CALL(which, arg0, arg1, 0)
|
|
|
+enum sbi_ext_time_fid {
|
|
|
+ SBI_EXT_TIME_SET_TIMER = 0,
|
|
|
+};
|
|
|
|
|
|
-static inline void sbi_console_putchar(int ch)
|
|
|
-{
|
|
|
- SBI_CALL_1(SBI_CONSOLE_PUTCHAR, ch);
|
|
|
-}
|
|
|
+enum sbi_ext_ipi_fid {
|
|
|
+ SBI_EXT_IPI_SEND_IPI = 0,
|
|
|
+};
|
|
|
|
|
|
-static inline int sbi_console_getchar(void)
|
|
|
-{
|
|
|
- return SBI_CALL_0(SBI_CONSOLE_GETCHAR);
|
|
|
-}
|
|
|
+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,
|
|
|
+};
|
|
|
|
|
|
-static inline void sbi_set_timer(uint64_t stime_value)
|
|
|
-{
|
|
|
-#if __riscv_xlen == 32
|
|
|
- SBI_CALL_2(SBI_SET_TIMER, stime_value, stime_value >> 32);
|
|
|
+#ifdef CONFIG_SBI_V01
|
|
|
+#define SBI_EXT_SET_TIMER SBI_EXT_0_1_SET_TIMER
|
|
|
+#define SBI_FID_SET_TIMER 0
|
|
|
+#define SBI_EXT_SEND_IPI SBI_EXT_0_1_SEND_IPI
|
|
|
+#define SBI_FID_SEND_IPI 0
|
|
|
+#define SBI_EXT_REMOTE_FENCE_I SBI_EXT_0_1_REMOTE_FENCE_I
|
|
|
+#define SBI_FID_REMOTE_FENCE_I 0
|
|
|
+#define SBI_EXT_REMOTE_SFENCE_VMA SBI_EXT_0_1_REMOTE_SFENCE_VMA
|
|
|
+#define SBI_FID_REMOTE_SFENCE_VMA 0
|
|
|
+#define SBI_EXT_REMOTE_SFENCE_VMA_ASID SBI_EXT_0_1_REMOTE_SFENCE_VMA_ASID
|
|
|
+#define SBI_FID_REMOTE_SFENCE_VMA_ASID 0
|
|
|
#else
|
|
|
- SBI_CALL_1(SBI_SET_TIMER, stime_value);
|
|
|
+#define SBI_EXT_SET_TIMER SBI_EXT_TIME
|
|
|
+#define SBI_FID_SET_TIMER SBI_EXT_TIME_SET_TIMER
|
|
|
+#define SBI_EXT_SEND_IPI SBI_EXT_IPI
|
|
|
+#define SBI_FID_SEND_IPI SBI_EXT_IPI_SEND_IPI
|
|
|
+#define SBI_EXT_REMOTE_FENCE_I SBI_EXT_RFENCE
|
|
|
+#define SBI_FID_REMOTE_FENCE_I SBI_EXT_RFENCE_REMOTE_FENCE_I
|
|
|
+#define SBI_EXT_REMOTE_SFENCE_VMA SBI_EXT_RFENCE
|
|
|
+#define SBI_FID_REMOTE_SFENCE_VMA SBI_EXT_RFENCE_REMOTE_SFENCE_VMA
|
|
|
+#define SBI_EXT_REMOTE_SFENCE_VMA_ASID SBI_EXT_RFENCE
|
|
|
+#define SBI_FID_REMOTE_SFENCE_VMA_ASID SBI_EXT_RFENCE_REMOTE_SFENCE_VMA_ASID
|
|
|
#endif
|
|
|
-}
|
|
|
|
|
|
-static inline void sbi_shutdown(void)
|
|
|
-{
|
|
|
- SBI_CALL_0(SBI_SHUTDOWN);
|
|
|
-}
|
|
|
+#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
|
|
|
|
|
|
-static inline void sbi_clear_ipi(void)
|
|
|
-{
|
|
|
- SBI_CALL_0(SBI_CLEAR_IPI);
|
|
|
-}
|
|
|
+/* 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
|
|
|
|
|
|
-static inline void sbi_send_ipi(const unsigned long *hart_mask)
|
|
|
-{
|
|
|
- SBI_CALL_1(SBI_SEND_IPI, hart_mask);
|
|
|
-}
|
|
|
+extern unsigned long sbi_spec_version;
|
|
|
+struct sbiret {
|
|
|
+ long error;
|
|
|
+ long value;
|
|
|
+};
|
|
|
|
|
|
-static inline void sbi_remote_fence_i(const unsigned long *hart_mask)
|
|
|
-{
|
|
|
- SBI_CALL_1(SBI_REMOTE_FENCE_I, hart_mask);
|
|
|
-}
|
|
|
+struct sbiret sbi_ecall(int ext, int fid, unsigned long arg0,
|
|
|
+ unsigned long arg1, unsigned long arg2,
|
|
|
+ unsigned long arg3, unsigned long arg4,
|
|
|
+ unsigned long arg5);
|
|
|
|
|
|
-static inline void sbi_remote_sfence_vma(const unsigned long *hart_mask,
|
|
|
- unsigned long start,
|
|
|
- unsigned long size)
|
|
|
-{
|
|
|
- SBI_CALL_1(SBI_REMOTE_SFENCE_VMA, hart_mask);
|
|
|
-}
|
|
|
+#ifdef CONFIG_SBI_V01
|
|
|
+void sbi_console_putchar(int ch);
|
|
|
+int sbi_console_getchar(void);
|
|
|
+void sbi_clear_ipi(void);
|
|
|
+void sbi_shutdown(void);
|
|
|
+#endif
|
|
|
+void sbi_set_timer(uint64_t stime_value);
|
|
|
+void sbi_send_ipi(const unsigned long *hart_mask);
|
|
|
+void sbi_remote_fence_i(const unsigned long *hart_mask);
|
|
|
+void sbi_remote_sfence_vma(const unsigned long *hart_mask,
|
|
|
+ unsigned long start,
|
|
|
+ unsigned long size);
|
|
|
+void sbi_remote_sfence_vma_asid(const unsigned long *hart_mask,
|
|
|
+ unsigned long start,
|
|
|
+ unsigned long size,
|
|
|
+ unsigned long asid);
|
|
|
|
|
|
-static inline void sbi_remote_sfence_vma_asid(const unsigned long *hart_mask,
|
|
|
- unsigned long start,
|
|
|
- unsigned long size,
|
|
|
- unsigned long asid)
|
|
|
-{
|
|
|
- SBI_CALL_1(SBI_REMOTE_SFENCE_VMA_ASID, hart_mask);
|
|
|
-}
|
|
|
+int sbi_probe_extension(int ext);
|
|
|
|
|
|
#endif
|