[RFC PATCH 2/3] riscv: use VA+PA variant of CMO macros for DMA synchorization

[Icenowy Zheng]

DMA synchorization is done on PA and the VA is calculated from the PA.

Use the alternative macro variant that takes both VA and PA as
parameters, thus in case the ISA extension used support PA directly, the
overhead for re-converting VA to PA can be omitted.

Suggested-by: Guo Ren <guoren at kernel.org>
Signed-off-by: Icenowy Zheng <uwu at icenowy.me>
---
 arch/riscv/mm/dma-noncoherent.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/arch/riscv/mm/dma-noncoherent.c b/arch/riscv/mm/dma-noncoherent.c
index d919efab6eba..a751f4aece62 100644
--- a/arch/riscv/mm/dma-noncoherent.c
+++ b/arch/riscv/mm/dma-noncoherent.c
@@ -19,13 +19,13 @@ void arch_sync_dma_for_device(phys_addr_t paddr, size_t size,
 
 	switch (dir) {
 	case DMA_TO_DEVICE:
-		ALT_CMO_OP(clean, vaddr, size, riscv_cbom_block_size);
+		ALT_CMO_OP_VPA(clean, vaddr, paddr, size, riscv_cbom_block_size);
 		break;
 	case DMA_FROM_DEVICE:
-		ALT_CMO_OP(clean, vaddr, size, riscv_cbom_block_size);
+		ALT_CMO_OP_VPA(clean, vaddr, paddr, size, riscv_cbom_block_size);
 		break;
 	case DMA_BIDIRECTIONAL:
-		ALT_CMO_OP(flush, vaddr, size, riscv_cbom_block_size);
+		ALT_CMO_OP_VPA(flush, vaddr, paddr, size, riscv_cbom_block_size);
 		break;
 	default:
 		break;
@@ -42,7 +42,7 @@ void arch_sync_dma_for_cpu(phys_addr_t paddr, size_t size,
 		break;
 	case DMA_FROM_DEVICE:
 	case DMA_BIDIRECTIONAL:
-		ALT_CMO_OP(flush, vaddr, size, riscv_cbom_block_size);
+		ALT_CMO_OP_VPA(flush, vaddr, paddr, size, riscv_cbom_block_size);
 		break;
 	default:
 		break;
-- 
2.38.1