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authorDave Airlie <[email protected]>2017-06-06 08:43:38 +1000
committerDave Airlie <[email protected]>2017-06-06 08:44:01 +1000
commit114d29e7fe13355f01d1ef27d50723af84b03081 (patch)
tree41e04728481676688cfbecba7b3275ac1e30d515 /src
parentda3330662f348de713cc9ae566d6f67187928c76 (diff)
radv: add a comment from radeonsi before cp dma function.
This is just copied over. Signed-off-by: Dave Airlie <[email protected]>
Diffstat (limited to 'src')
-rw-r--r--src/amd/vulkan/si_cmd_buffer.c4
1 files changed, 4 insertions, 0 deletions
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)