riscv: Add DMA 64-bit address support
dma_addr_t holds any valid DMA address. If the DMA API only uses 32/64-bit
addresses, dma_addr_t need only be 32/64 bits wide.
Signed-off-by: Padmarao Begari <padmarao.begari@microchip.com>
Reviewed-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Bin Meng <bin.meng@windriver.com>
Reviewed-by: Rick Chen <rick@andestech.com>
diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
index 30b0540..55eaee2 100644
--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig
@@ -152,6 +152,10 @@
config 64BIT
bool
+config DMA_ADDR_T_64BIT
+ bool
+ default y if 64BIT
+
config SIFIVE_CLINT
bool
depends on RISCV_MMODE || SPL_RISCV_MMODE
diff --git a/arch/riscv/include/asm/types.h b/arch/riscv/include/asm/types.h
index 403cf9a..b800b2d 100644
--- a/arch/riscv/include/asm/types.h
+++ b/arch/riscv/include/asm/types.h
@@ -29,7 +29,11 @@
#include <stddef.h>
+#ifdef CONFIG_DMA_ADDR_T_64BIT
+typedef u64 dma_addr_t;
+#else
typedef u32 dma_addr_t;
+#endif
typedef unsigned long phys_addr_t;
typedef unsigned long phys_size_t;