kernel.git/include/drm/ttm/ttm_placement.h, branch linux-rolling-stable

drm/ttm: replace busy placement with flags v6

2024-01-25T08:59:44Z

Instead of a list of separate busy placement add flags which indicate that a placement should only be used when there is room or if we need to evict. v2: add missing TTM_PL_FLAG_IDLE for i915 v3: fix auto build test ERROR on drm-tip/drm-tip v4: fix some typos pointed out by checkpatch v5: cleanup some rebase problems with VMWGFX v6: implement some missing VMWGFX functionality pointed out by Zack, rename the flags as suggested by Michel, rebase on drm-tip and adjust XE as well Signed-off-by: Christian König Signed-off-by: Somalapuram Amaranath Reviewed-by: Zack Rusin Reviewed-by: Thomas Zimmermann Reviewed-by: Thomas Hellström Link: https://patchwork.freedesktop.org/patch/msgid/20240112125158.2748-4-christian.koenig@amd.com

drm/ttm: Clarify that the TTM_PL_SYSTEM is under TTMs control

2021-12-01T16:58:37Z

TTM takes full control over TTM_PL_SYSTEM placed buffers. This makes driver internal usage of TTM_PL_SYSTEM prone to errors because it requires the drivers to manually handle all interactions between TTM which can swap out those buffers whenever it thinks it's the right thing to do and driver. CPU buffers which need to be fenced and shared with accelerators should be placed in driver specific placements that can explicitly handle CPU/accelerator buffer fencing. Currently, apart, from things silently failing nothing is enforcing that requirement which means that it's easy for drivers and new developers to get this wrong. To avoid the confusion we can document this requirement and clarify the solution. This came up during a discussion on dri-devel: https://lore.kernel.org/dri-devel/232f45e9-8748-1243-09bf-56763e6668b3@amd.com Signed-off-by: Zack Rusin Cc: Christian König Cc: Thomas Hellström Reviewed-by: Christian König Link: https://patchwork.freedesktop.org/patch/msgid/20211110145034.487512-1-zackr@vmware.com

drm/ttm: enable TTM placement kerneldoc

2021-09-09T11:29:05Z

Fix the last remaining warning and finally enable this. Signed-off-by: Christian König Reviewed-by: Matthew Auld Reviewed-by: Alex Deucher Link: https://patchwork.freedesktop.org/patch/msgid/20210908132933.3269-7-christian.koenig@amd.com

drm/ttm: add TTM_PL_FLAG_TEMPORARY flag v3

2021-06-23T18:59:39Z

Sometimes drivers need to use bounce buffers to evict BOs. While those reside in some domain they are not necessarily suitable for CS. Add a flag so that drivers can note that a bounce buffers needs to be reallocated during validation. v2: add detailed comments v3 (chk): merge commits and rework commit message Suggested-by: Christian König Signed-off-by: Lang Yu Signed-off-by: Christian König Signed-off-by: Andrey Grodzovsky Acked-by: Nirmoy Das Link: https://patchwork.freedesktop.org/patch/msgid/20210622162339.761651-1-andrey.grodzovsky@amd.com

drm/ttm: nuke caching placement flags

2020-10-15T10:51:35Z

Changing the caching on the fly never really worked flawlessly. So stop this completely and just let drivers specific the desired caching in the tt or bus object. Signed-off-by: Christian König Reviewed-by: Michael J. Ruhl Link: https://patchwork.freedesktop.org/patch/394256/

drm/ttm: remove TTM_PL_FLAG_NO_EVICT

2020-09-24T14:16:51Z

Not used any more. Signed-off-by: Christian König Reviewed-by: Dave Airlie Reviewed-by: Huang Rui Link: https://patchwork.freedesktop.org/patch/391604/?series=81973&rev=1

drm/ttm: nuke memory type flags

2020-09-11T11:31:23Z

It's not supported to specify more than one of those flags. So it never made sense to make this a flag in the first place. Nuke the flags and specify directly which memory type to use. Signed-off-by: Christian König Reviewed-by: Dave Airlie Link: https://patchwork.freedesktop.org/patch/389826/?series=81551&rev=1

drm/ttm: add TTM_PL_FLAG_CONTIGUOUS v2

2017-04-05T03:33:42Z

This allows drivers to specify if they need a contiguous allocation or not. v2: use space instead of tab Signed-off-by: Christian König Reviewed-by: Nicolai Hähnle Signed-off-by: Alex Deucher

drm/ttm: move placement structures into ttm_placement.h

2016-09-14T19:10:43Z

Makes more sense to keep that together. Signed-off-by: Christian König Reviewed-by: Chunming Zhou Reviewed-by: Alex Deucher Signed-off-by: Alex Deucher

drm/ttm: remove unused placement flags

2016-09-14T19:10:42Z

Either never used or not used in quite a while. Signed-off-by: Christian König Reviewed-by: Alex Deucher Reviewed-by: Chunming Zhou Signed-off-by: Alex Deucher