kernel/linux.git/drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.h, branch v6.6.132

drm/amdgpu: Implement mmap as GEM object function

2021-05-26T18:56:23+00:00

Moving the driver-specific mmap code into a GEM object function allows for using DRM helpers for various mmap callbacks. This change resolves several inconsistencies between regular mmap and prime-based mmap. The vm_ops field in vma is now set for all mmap'ed areas. Previously it way only set for regular mmap calls, prime-based mmap used TTM's default vm_ops. The function amdgpu_verify_access() is no longer being called and therefore removed by this patch. As a side effect, amdgpu_ttm_vm_ops and amdgpu_ttm_fault() are now implemented in amdgpu's GEM code. v4: * rebased v3: * rename mmap function to amdgpu_gem_object_mmap() (Christian) * remove unnecessary checks from mmap (Christian) v2: * rename amdgpu_ttm_vm_ops and amdgpu_ttm_fault() to amdgpu_gem_vm_ops and amdgpu_gem_fault() (Christian) * the check for kfd_bo has meanwhile been removed Signed-off-by: Thomas Zimmermann Reviewed-by: Christian König Link: https://patchwork.freedesktop.org/patch/msgid/20210525151055.8174-3-tzimmermann@suse.de

drm/gem: Use struct dma_buf_map in GEM vmap ops and convert GEM backends

2020-11-09T08:19:24+00:00

This patch replaces the vmap/vunmap's use of raw pointers in GEM object functions with instances of struct dma_buf_map. GEM backends are converted as well. For most of them, this simply changes the returned type. TTM-based drivers now return information about the location of the memory, either system or I/O memory. GEM VRAM helpers and qxl now use ttm_bo_vmap() et al. Amdgpu, nouveau and radeon use drm_gem_ttm_vmap() et al instead of implementing their own vmap callbacks. v7: * init QXL cursor to mapped BO buffer (kernel test robot) v5: * update vkms after switch to shmem v4: * use ttm_bo_vmap(), drm_gem_ttm_vmap(), et al. (Daniel, Christian) * fix a trailing { in drm_gem_vmap() * remove several empty functions instead of converting them (Daniel) * comment uses of raw pointers with a TODO (Daniel) * TODO list: convert more helpers to use struct dma_buf_map Signed-off-by: Thomas Zimmermann Acked-by: Christian König Tested-by: Sam Ravnborg Link: https://patchwork.freedesktop.org/patch/msgid/20201103093015.1063-7-tzimmermann@suse.de

drm/amdgpu: Enable P2P dmabuf over XGMI

2020-08-11T15:47:35+00:00

Access the exported P2P dmabuf over XGMI, if available. Otherwise, fall back to the existing PCIe method. Reviewed-by: Christian König Signed-off-by: Arunpravin Signed-off-by: Alex Deucher

drm/amdgpu: add independent DMA-buf import v9

2019-10-28T15:59:43+00:00

Instead of relying on the DRM functions just implement our own import functions. This prepares support for taking care of unpinned DMA-buf. v2: enable for all exporters, not just amdgpu, fix invalidation handling, lock reservation object while setting callback v3: change to new dma_buf attach interface v4: split out from unpinned DMA-buf work v5: rebased and cleanup on new DMA-buf interface v6: squash with invalidation callback change, stop using _(map|unmap)_locked v7: drop invalidations when the BO is already in system domain v8: rebase on new DMA-buf patch and drop move notification v9: cleanup comments Signed-off-by: Christian König Reviewed-by: Alex Deucher Link: https://patchwork.freedesktop.org/patch/337948/

drm/amdgpu: add independent DMA-buf export v8

2019-10-28T15:59:35+00:00

Add an DMA-buf export implementation independent of the DRM helpers. This not only avoids the caching of DMA-buf mappings, but also allows us to use the new dynamic locking approach. This is also a prerequisite of unpinned DMA-buf handling. v2: fix unintended recursion, remove debugging leftovers v3: split out from unpinned DMA-buf work v4: rebase on top of new no_sgt_cache flag v5: fix some warnings by including amdgpu_dma_buf.h v6: fix locking for non amdgpu exports v7: rebased on new DMA-buf locking patch v8: drop extra include Signed-off-by: Christian König Reviewed-by: Alex Deucher Link: https://patchwork.freedesktop.org/patch/337949/

drm/amdgpu: Fill out gem_object->resv

2019-07-31T08:19:23+00:00

That way we can ditch our gem_prime_res_obj implementation. Since ttm absolutely needs the right reservation object all the boilerplate is already there and we just have to wire it up correctly. Note that gem/prime doesn't care when we do this, as long as we do it before the bo is registered and someone can call the handle2fd ioctl on it. Aside: ttm_buffer_object.ttm_resv could probably be ditched in favour of always passing a non-NULL resv to ttm_bo_init(). At least for gem drivers that would avoid having two of these, on in ttm_buffer_object and the other in drm_gem_object, one just there for confusion. Acked-by: Gerd Hoffmann Cc: Gerd Hoffmann Reviewed-by: Emil Velikov Signed-off-by: Daniel Vetter Cc: Alex Deucher Cc: "Christian König" Cc: Daniel Vetter Cc: "Michel Dänzer" Cc: Chris Wilson Cc: Huang Rui Cc: Felix Kuehling Cc: Andrey Grodzovsky Cc: Evan Quan Cc: Sonny Jiang Cc: Amber Lin Cc: "Michał Mirosław" Cc: Junwei Zhang Cc: Thomas Zimmermann Cc: Samuel Li Reviewed-by: Christian König Link: https://patchwork.freedesktop.org/patch/msgid/20190725132655.11951-4-daniel.vetter@ffwll.ch

drm/prime: Align gem_prime_export with obj_funcs.export

2019-06-21T15:30:49+00:00

The idea is that gem_prime_export is deprecated in favor of obj_funcs.export. That's much easier to do if both have matching function signatures. Reviewed-by: Eric Anholt Reviewed-by: Emil Velikov Acked-by: Christian König Acked-by: Thierry Reding Signed-off-by: Daniel Vetter Cc: Russell King Cc: Maarten Lankhorst Cc: Maxime Ripard Cc: Sean Paul Cc: David Airlie Cc: Daniel Vetter Cc: Zhenyu Wang Cc: Zhi Wang Cc: Jani Nikula Cc: Joonas Lahtinen Cc: Rodrigo Vivi Cc: Tomi Valkeinen Cc: Alex Deucher Cc: "Christian König" Cc: "David (ChunMing) Zhou" Cc: Thierry Reding Cc: Jonathan Hunter Cc: Dave Airlie Cc: Eric Anholt Cc: "Michel Dänzer" Cc: Chris Wilson Cc: Huang Rui Cc: Felix Kuehling Cc: Hawking Zhang Cc: Feifei Xu Cc: Jim Qu Cc: Evan Quan Cc: Matthew Auld Cc: Mika Kuoppala Cc: Thomas Zimmermann Cc: Kate Stewart Cc: Sumit Semwal Cc: Jilayne Lovejoy Cc: Thomas Gleixner Cc: Mikulas Patocka Cc: Greg Kroah-Hartman Cc: Junwei Zhang Cc: intel-gvt-dev@lists.freedesktop.org Cc: intel-gfx@lists.freedesktop.org Cc: amd-gfx@lists.freedesktop.org Cc: linux-tegra@vger.kernel.org Link: https://patchwork.freedesktop.org/patch/msgid/20190614203615.12639-10-daniel.vetter@ffwll.ch

drm/amdgpu: rename amdgpu_prime.[ch] into amdgpu_dma_buf.[ch]

2019-05-24T17:20:48+00:00

We are getting a dma-buf implementation completely separate from drm prime, so rename the files now and cleanup the code a bit. No functional change. Signed-off-by: Christian König Acked-by: Alex Deucher Signed-off-by: Alex Deucher