diff options
| author | Padmarao Begari | 2021-01-15 08:20:35 +0530 |
|---|---|---|
| committer | Andes | 2021-01-18 11:06:38 +0800 |
| commit | 5af3574f6ad0c9af5e04e6ab0ee910a600e45cff (patch) | |
| tree | 928690587b33e602c45010c7ae3b7965bf624bf3 | |
| parent | bc8d12bfd8750de265b742f2ab9cdde2726ea85f (diff) | |
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>
| -rw-r--r-- | arch/riscv/Kconfig | 4 | ||||
| -rw-r--r-- | arch/riscv/include/asm/types.h | 4 |
2 files changed, 8 insertions, 0 deletions
diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig index 30b05408b14..55eaee2da63 100644 --- a/arch/riscv/Kconfig +++ b/arch/riscv/Kconfig @@ -152,6 +152,10 @@ config 32BIT 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 403cf9a48fa..b800b2d221b 100644 --- a/arch/riscv/include/asm/types.h +++ b/arch/riscv/include/asm/types.h @@ -29,7 +29,11 @@ typedef unsigned short umode_t; #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; |