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drm: etnaviv: clean up GPU command submission

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Clean up the GPU command submission path to prepare for the next change.
This makes the next change easier to read and understand.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
This commit is contained in:
Russell King 2016-01-21 15:20:35 +00:00 committed by Lucas Stach
parent 90747b9511
commit 33b1be99fb
1 changed files with 9 additions and 8 deletions
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17
drivers/gpu/drm/etnaviv/etnaviv_buffer.c
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@ -224,7 +224,8 @@ void etnaviv_buffer_queue(struct etnaviv_gpu *gpu, unsigned int event,
{
struct etnaviv_cmdbuf *buffer = gpu->buffer;
unsigned int waitlink_offset = buffer->user_size - 16;
u32 back, link_target, link_size, reserve_size, extra_size = 0;
u32 back, reserve_size, extra_size = 0;
u32 link_target, link_dwords;
if (drm_debug & DRM_UT_DRIVER)
etnaviv_buffer_dump(gpu, buffer, 0, 0x50);
@ -251,7 +252,7 @@ void etnaviv_buffer_queue(struct etnaviv_gpu *gpu, unsigned int event,
/* save offset back into main buffer */
back = buffer->user_size + reserve_size - 6 * 4;
link_size = 6;
link_dwords = 6;
/* Skip over any extra instructions */
link_target += extra_size * sizeof(u32);
@ -261,10 +262,10 @@ void etnaviv_buffer_queue(struct etnaviv_gpu *gpu, unsigned int event,
link_target, gpu_va(gpu, cmdbuf), cmdbuf->vaddr);
/* jump back from cmd to main buffer */
CMD_LINK(cmdbuf, link_size, link_target);
CMD_LINK(cmdbuf, link_dwords, link_target);
link_target = gpu_va(gpu, cmdbuf);
link_size = cmdbuf->size / 8;
link_dwords = cmdbuf->size / 8;
if (drm_debug & DRM_UT_DRIVER) {
print_hex_dump(KERN_INFO, "cmd ", DUMP_PREFIX_OFFSET, 16, 4,
@ -297,12 +298,12 @@ void etnaviv_buffer_queue(struct etnaviv_gpu *gpu, unsigned int event,
gpu->switch_context = false;
}
/* And the link to the first buffer */
CMD_LINK(buffer, link_size, link_target);
/* And the link to the submitted buffer */
CMD_LINK(buffer, link_dwords, link_target);
/* Update the link target to point to above instructions */
link_target = new_target;
link_size = extra_size;
link_dwords = extra_size;
}
/* trigger event */
@ -315,7 +316,7 @@ void etnaviv_buffer_queue(struct etnaviv_gpu *gpu, unsigned int event,
etnaviv_buffer_replace_wait(buffer, waitlink_offset,
VIV_FE_LINK_HEADER_OP_LINK |
VIV_FE_LINK_HEADER_PREFETCH(link_size),
VIV_FE_LINK_HEADER_PREFETCH(link_dwords),
link_target);
if (drm_debug & DRM_UT_DRIVER)