[PATCH 5/5] riscv: Implement new SBI v0.2 extensions

[Bin Meng]

Few v0.1 SBI calls are being replaced by new SBI calls that follows
v0.2 calling convention.

Implement the replacement extensions and few additional new SBI
function calls that makes way for a better SBI interface in future.

Signed-off-by: Bin Meng <bmeng.cn at gmail.com>

---

 arch/riscv/include/asm/sbi.h | 24 ++++++++++++++++++++++++
 arch/riscv/lib/sbi.c         | 16 +++++++++-------
 2 files changed, 33 insertions(+), 7 deletions(-)

diff --git a/arch/riscv/include/asm/sbi.h b/arch/riscv/include/asm/sbi.h
index c65104f..3595ee8 100644
--- a/arch/riscv/include/asm/sbi.h
+++ b/arch/riscv/include/asm/sbi.h
@@ -53,6 +53,30 @@ enum sbi_ext_rfence_fid {
 	SBI_EXT_RFENCE_REMOTE_SFENCE_VMA_ASID,
 };
 
+#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
+#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
+
 #define SBI_SPEC_VERSION_DEFAULT	0x1
 #define SBI_SPEC_VERSION_MAJOR_SHIFT	24
 #define SBI_SPEC_VERSION_MAJOR_MASK	0x7f
diff --git a/arch/riscv/lib/sbi.c b/arch/riscv/lib/sbi.c
index 604a3a8..7bdf071 100644
--- a/arch/riscv/lib/sbi.c
+++ b/arch/riscv/lib/sbi.c
@@ -97,10 +97,11 @@ void sbi_shutdown(void)
 void sbi_set_timer(uint64_t stime_value)
 {
 #if __riscv_xlen == 32
-	sbi_ecall(SBI_EXT_0_1_SET_TIMER, 0, stime_value,
+	sbi_ecall(SBI_EXT_SET_TIMER, SBI_FID_SET_TIMER, stime_value,
 		  stime_value >> 32, 0, 0, 0, 0);
 #else
-	sbi_ecall(SBI_EXT_0_1_SET_TIMER, 0, stime_value, 0, 0, 0, 0, 0);
+	sbi_ecall(SBI_EXT_SET_TIMER, SBI_FID_SET_TIMER, stime_value,
+		  0, 0, 0, 0, 0);
 #endif
 }
 
@@ -112,7 +113,7 @@ void sbi_set_timer(uint64_t stime_value)
  */
 void sbi_send_ipi(const unsigned long *hart_mask)
 {
-	sbi_ecall(SBI_EXT_0_1_SEND_IPI, 0, (unsigned long)hart_mask,
+	sbi_ecall(SBI_EXT_SEND_IPI, SBI_FID_SEND_IPI, (unsigned long)hart_mask,
 		  0, 0, 0, 0, 0);
 }
 
@@ -124,8 +125,8 @@ void sbi_send_ipi(const unsigned long *hart_mask)
  */
 void sbi_remote_fence_i(const unsigned long *hart_mask)
 {
-	sbi_ecall(SBI_EXT_0_1_REMOTE_FENCE_I, 0, (unsigned long)hart_mask,
-		  0, 0, 0, 0, 0);
+	sbi_ecall(SBI_EXT_REMOTE_FENCE_I, SBI_FID_REMOTE_FENCE_I,
+		  (unsigned long)hart_mask, 0, 0, 0, 0, 0);
 }
 
 /**
@@ -141,7 +142,7 @@ void sbi_remote_sfence_vma(const unsigned long *hart_mask,
 			   unsigned long start,
 			   unsigned long size)
 {
-	sbi_ecall(SBI_EXT_0_1_REMOTE_SFENCE_VMA, 0,
+	sbi_ecall(SBI_EXT_REMOTE_SFENCE_VMA, SBI_FID_REMOTE_SFENCE_VMA,
 		  (unsigned long)hart_mask, start, size, 0, 0, 0);
 }
 
@@ -161,7 +162,8 @@ void sbi_remote_sfence_vma_asid(const unsigned long *hart_mask,
 				unsigned long size,
 				unsigned long asid)
 {
-	sbi_ecall(SBI_EXT_0_1_REMOTE_SFENCE_VMA_ASID, 0,
+	sbi_ecall(SBI_EXT_REMOTE_SFENCE_VMA_ASID,
+		  SBI_FID_REMOTE_SFENCE_VMA_ASID,
 		  (unsigned long)hart_mask, start, size, asid, 0, 0);
 }
 
-- 
2.7.4