riscv: fix sbi_remote_sfence_vma{,_asid}.

Currently sbi_remote_sfence_vma{,_asid} does not pass their arguments
to SBI at all, which is semantically incorrect.

Neither BBL nor OpenSBI is using these arguments at the moment, and
they just do a global flush instead. However we still need to provide
correct arguments.

Signed-off-by: Gary Guo <gary@garyguo.net>
Reviewed-by: Anup Patel <anup@brainfault.org>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>

diff --git a/arch/riscv/include/asm/sbi.h b/arch/riscv/include/asm/sbi.h
index b6bb10b..19f2316 100644 (file)
--- a/arch/riscv/include/asm/sbi.h
+++ b/arch/riscv/include/asm/sbi.h
@@ -26,22 +26,27 @@
 #define SBI_REMOTE_SFENCE_VMA_ASID 7
 #define SBI_SHUTDOWN 8
 
-#define SBI_CALL(which, arg0, arg1, arg2) ({                   \
+#define SBI_CALL(which, arg0, arg1, arg2, arg3) ({             \
        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 a3 asm ("a3") = (uintptr_t)(arg3);   \
        register uintptr_t a7 asm ("a7") = (uintptr_t)(which);  \
        asm volatile ("ecall"                                   \
                      : "+r" (a0)                               \
-                     : "r" (a1), "r" (a2), "r" (a7)            \
+                     : "r" (a1), "r" (a2), "r" (a3), "r" (a7)  \
                      : "memory");                              \
        a0;                                                     \
 })
 
 /* 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)
+#define SBI_CALL_0(which) SBI_CALL(which, 0, 0, 0, 0)
+#define SBI_CALL_1(which, arg0) SBI_CALL(which, arg0, 0, 0, 0)
+#define SBI_CALL_2(which, arg0, arg1) SBI_CALL(which, arg0, arg1, 0, 0)
+#define SBI_CALL_3(which, arg0, arg1, arg2) \
+               SBI_CALL(which, arg0, arg1, arg2, 0)
+#define SBI_CALL_4(which, arg0, arg1, arg2, arg3) \
+               SBI_CALL(which, arg0, arg1, arg2, arg3)
 
 static inline void sbi_console_putchar(int ch)
 {
@@ -86,7 +91,7 @@ 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);
+       SBI_CALL_3(SBI_REMOTE_SFENCE_VMA, hart_mask, start, size);
 }
 
 static inline void sbi_remote_sfence_vma_asid(const unsigned long *hart_mask,
@@ -94,7 +99,7 @@ static inline void sbi_remote_sfence_vma_asid(const unsigned long *hart_mask,
                                              unsigned long size,
                                              unsigned long asid)
 {
-       SBI_CALL_1(SBI_REMOTE_SFENCE_VMA_ASID, hart_mask);
+       SBI_CALL_4(SBI_REMOTE_SFENCE_VMA_ASID, hart_mask, start, size, asid);
 }
 
 #endif