drm/xe: Implement stolen memory.

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This adds support for stolen memory, with the same allocator as
vram_mgr. This allows us to skip a whole lot of copy-paste,
by re-using parts of xe_ttm_vram_mgr.

The stolen memory may be bound using VM_BIND, so it performs like any
other memory region.

We should be able to map a stolen BO directly using the physical memory
location instead of through GGTT even on old platforms, but I don't know
what the effects are on coherency.

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: Matthew Brost <matthew.brost@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>

...

This commit is contained in:

Maarten Lankhorst 2023-01-12 17:25:17 -05:00 • committed by Rodrigo Vivi

parent 765b65e5bd

commit d8b52a02cb

14 changed files with 560 additions and 125 deletions

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1

drivers/gpu/drm/xe/Makefile

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173

drivers/gpu/drm/xe/xe_bo.c

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16

drivers/gpu/drm/xe/xe_bo.h

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4

drivers/gpu/drm/xe/xe_debugfs.c

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4

drivers/gpu/drm/xe/xe_device.c

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58

drivers/gpu/drm/xe/xe_mmio.c

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1

drivers/gpu/drm/xe/xe_mmio.h

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5

drivers/gpu/drm/xe/xe_pt.c

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47

drivers/gpu/drm/xe/xe_res_cursor.h

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244

drivers/gpu/drm/xe/xe_ttm_stolen_mgr.c

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21

drivers/gpu/drm/xe/xe_ttm_stolen_mgr.h

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95

drivers/gpu/drm/xe/xe_ttm_vram_mgr.c

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18

drivers/gpu/drm/xe/xe_ttm_vram_mgr.h

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2

drivers/gpu/drm/xe/xe_ttm_vram_mgr_types.h

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