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drm/msm/a6xx: Add a flag to allow preemption to submitqueue_create

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Some userspace changes are necessary so add a flag for userspace to
advertise support for preemption when creating the submitqueue.

When this flag is not set preemption will not be allowed in the middle
of the submitted IBs therefore mantaining compatibility with older
userspace.

The flag is rejected if preemption is not supported on the target, this
allows userspace to know whether preemption is supported.

Tested-by: Rob Clark <robdclark@gmail.com>
Tested-by: Neil Armstrong <neil.armstrong@linaro.org> # on SM8650-QRD
Tested-by: Neil Armstrong <neil.armstrong@linaro.org> # on SM8550-QRD
Tested-by: Neil Armstrong <neil.armstrong@linaro.org> # on SM8450-HDK
Signed-off-by: Antonino Maniscalco <antomani103@gmail.com>
Patchwork: https://patchwork.freedesktop.org/patch/618028/
Signed-off-by: Rob Clark <robdclark@chromium.org>
This commit is contained in:
Antonino Maniscalco
2024-10-03 13:21:52 -07:00
committed by Rob Clark
parent 35d36dc169
commit 7788d320ba
3 changed files with 15 additions and 5 deletions
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include/uapi/drm/msm_drm.h
+4 -1
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@@ -347,7 +347,10 @@ struct drm_msm_gem_madvise {
* backwards compatibility as a "default" submitqueue
*/
#define MSM_SUBMITQUEUE_FLAGS (0)
#define MSM_SUBMITQUEUE_ALLOW_PREEMPT 0x00000001
#define MSM_SUBMITQUEUE_FLAGS ( \
MSM_SUBMITQUEUE_ALLOW_PREEMPT | \
0)
/*
* The submitqueue priority should be between 0 and MSM_PARAM_PRIORITIES-1,