[PATCH 1/2] lib: sbi: Expose __sbi_sfence_vma_all() function

[Anup Patel]

From: Andrew Waterman <andrew at sifive.com>

The __sbi_sfence_vma_all() can be shared by different parts of
OpenSBI so rename __tlb_flush_all() to __sbi_sfence_vma_all()
and make it global function.

Signed-off-by: Andrew Waterman <andrew at sifive.com>
Signed-off-by: Anup Patel <apatel at ventanamicro.com>
---
 include/sbi/sbi_tlb.h  | 2 ++
 lib/sbi/sbi_hart_pmp.c | 3 ++-
 lib/sbi/sbi_tlb.c      | 4 ++--
 3 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/include/sbi/sbi_tlb.h b/include/sbi/sbi_tlb.h
index 2c50fe85..3936e857 100644
--- a/include/sbi/sbi_tlb.h
+++ b/include/sbi/sbi_tlb.h
@@ -54,6 +54,8 @@ do { \
 
 #define SBI_TLB_INFO_SIZE		sizeof(struct sbi_tlb_info)
 
+void __sbi_sfence_vma_all();
+
 int sbi_tlb_request(ulong hmask, ulong hbase, struct sbi_tlb_info *tinfo);
 
 int sbi_tlb_init(struct sbi_scratch *scratch, bool cold_boot);
diff --git a/lib/sbi/sbi_hart_pmp.c b/lib/sbi/sbi_hart_pmp.c
index ab96e2fa..1655d87c 100644
--- a/lib/sbi/sbi_hart_pmp.c
+++ b/lib/sbi/sbi_hart_pmp.c
@@ -12,6 +12,7 @@
 #include <sbi/sbi_hfence.h>
 #include <sbi/sbi_math.h>
 #include <sbi/sbi_platform.h>
+#include <sbi/sbi_tlb.h>
 #include <sbi/riscv_asm.h>
 
 /*
@@ -74,7 +75,7 @@ static void sbi_hart_pmp_fence(void)
 	 * conditions.
 	 */
 	if (misa_extension('S')) {
-		__asm__ __volatile__("sfence.vma");
+		__sbi_sfence_vma_all();
 
 		/*
 		 * If hypervisor mode is supported, flush caching
diff --git a/lib/sbi/sbi_tlb.c b/lib/sbi/sbi_tlb.c
index 01b31f4e..ada60c32 100644
--- a/lib/sbi/sbi_tlb.c
+++ b/lib/sbi/sbi_tlb.c
@@ -29,7 +29,7 @@ static unsigned long tlb_fifo_off;
 static unsigned long tlb_fifo_mem_off;
 static unsigned long tlb_range_flush_limit;
 
-static void tlb_flush_all(void)
+void __sbi_sfence_vma_all(void)
 {
 	__asm__ __volatile("sfence.vma");
 }
@@ -86,7 +86,7 @@ static void sbi_tlb_local_sfence_vma(struct sbi_tlb_info *tinfo)
 	sbi_pmu_ctr_incr_fw(SBI_PMU_FW_SFENCE_VMA_RCVD);
 
 	if ((start == 0 && size == 0) || (size == SBI_TLB_FLUSH_ALL)) {
-		tlb_flush_all();
+		__sbi_sfence_vma_all();
 		return;
 	}
 
-- 
2.43.0