From: Dave Airlie Date: Mon, 5 Jun 2017 22:43:38 +0000 (+1000) Subject: radv: add a comment from radeonsi before cp dma function. X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=114d29e7fe13355f01d1ef27d50723af84b03081;p=mesa.git radv: add a comment from radeonsi before cp dma function. This is just copied over. Signed-off-by: Dave Airlie --- diff --git a/src/amd/vulkan/si_cmd_buffer.c b/src/amd/vulkan/si_cmd_buffer.c index 8237155bda8..fdcf24e631c 100644 --- a/src/amd/vulkan/si_cmd_buffer.c +++ b/src/amd/vulkan/si_cmd_buffer.c @@ -1001,6 +1001,10 @@ static inline unsigned cp_dma_max_byte_count(struct radv_cmd_buffer *cmd_buffer) return max & ~(SI_CPDMA_ALIGNMENT - 1); } +/* Emit a CP DMA packet to do a copy from one buffer to another, or to clear + * a buffer. The size must fit in bits [20:0]. If CP_DMA_CLEAR is set, src_va is a 32-bit + * clear value. + */ static void si_emit_cp_dma(struct radv_cmd_buffer *cmd_buffer, uint64_t dst_va, uint64_t src_va, unsigned size, unsigned flags)