From 51bdb50904b1ffffc1caa8dd92f5abea78e33a0b Mon Sep 17 00:00:00 2001 From: Nicolas Saenz Julienne Date: Tue, 12 Jan 2021 13:55:22 +0100 Subject: dm: Introduce xxx_get_dma_range() Add the following functions to get a specific device's DMA ranges: - dev_get_dma_range() - ofnode_get_dma_range() - of_get_dma_range() - fdt_get_dma_range() They are specially useful in oder to be able validate a physical address space range into a bus's and to convert addresses from and to address spaces. Signed-off-by: Nicolas Saenz Julienne Reviewed-by: Simon Glass Tested-by: Peter Robinson Signed-off-by: Matthias Brugger --- drivers/core/ofnode.c | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'drivers/core/ofnode.c') diff --git a/drivers/core/ofnode.c b/drivers/core/ofnode.c index 26c9d04056..fa0bd2a9c4 100644 --- a/drivers/core/ofnode.c +++ b/drivers/core/ofnode.c @@ -927,6 +927,15 @@ u64 ofnode_translate_dma_address(ofnode node, const fdt32_t *in_addr) return fdt_translate_dma_address(gd->fdt_blob, ofnode_to_offset(node), in_addr); } +int ofnode_get_dma_range(ofnode node, phys_addr_t *cpu, dma_addr_t *bus, u64 *size) +{ + if (ofnode_is_np(node)) + return of_get_dma_range(ofnode_to_np(node), cpu, bus, size); + else + return fdt_get_dma_range(gd->fdt_blob, ofnode_to_offset(node), + cpu, bus, size); +} + int ofnode_device_is_compatible(ofnode node, const char *compat) { if (ofnode_is_np(node)) -- cgit v1.2.3