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2021-09-15Merge drm/drm-next into drm-intel-gt-nextJoonas Lahtinen
Close the divergence which has caused patches not to apply and have a solid baseline for the PXP patches that Rodrigo will send a topic branch PR for. Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
2021-09-14Merge drm/drm-next into drm-misc-nextMaxime Ripard
Kickstart new drm-misc-next cycle. Signed-off-by: Maxime Ripard <maxime@cerno.tech>
2021-09-13drm/ttm: Try to check if new ttm man out of bounds during compilexinhui pan
Allow TTM know if vendor set new ttm mananger out of bounds by adding build_bug_on. Signed-off-by: xinhui pan <xinhui.pan@amd.com> Reviewed-by: Christian König <christian.koenig@amd.com> Link: https://patchwork.freedesktop.org/patch/msgid/20210913080950.180752-1-xinhui.pan@amd.com Signed-off-by: Christian König <christian.koenig@amd.com>
2021-09-09drm/ttm: enable TTM page pool kerneldocChristian König
Fix the remaining warnings and finally enable this. Signed-off-by: Christian König <christian.koenig@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Link: https://patchwork.freedesktop.org/patch/msgid/20210908132933.3269-9-christian.koenig@amd.com
2021-09-09drm/ttm: enable TTM TT object kerneldoc v2Christian König
Fix the remaining warnings and finally enable this. v2: add caching enum link Signed-off-by: Christian König <christian.koenig@amd.com> Reviewed-by: Matthew Auld <matthew.auld@intel.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Link: https://patchwork.freedesktop.org/patch/msgid/20210908132933.3269-8-christian.koenig@amd.com
2021-09-09drm/ttm: enable TTM placement kerneldocChristian König
Fix the last remaining warning and finally enable this. Signed-off-by: Christian König <christian.koenig@amd.com> Reviewed-by: Matthew Auld <matthew.auld@intel.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Link: https://patchwork.freedesktop.org/patch/msgid/20210908132933.3269-7-christian.koenig@amd.com
2021-09-09drm/ttm: enable TTM resource object kerneldoc v2Christian König
Fix the last two remaining warnings and finally enable this. v2: add caching enum link Signed-off-by: Christian König <christian.koenig@amd.com> Reviewed-by: Matthew Auld <matthew.auld@intel.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Link: https://patchwork.freedesktop.org/patch/msgid/20210908132933.3269-6-christian.koenig@amd.com
2021-09-09drm/ttm: enable TTM device object kerneldoc v2Christian König
Fix the remaining warnings, switch to inline structure documentation and finally enable this. v2: adjust based on suggestions from Alex Signed-off-by: Christian König <christian.koenig@amd.com> Reviewed-by: Matthew Auld <matthew.auld@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20210908132933.3269-5-christian.koenig@amd.com
2021-09-09drm/ttm: add kerneldoc for enum ttm_cachingChristian König
Briefly describe what this is all about. Signed-off-by: Christian König <christian.koenig@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Link: https://patchwork.freedesktop.org/patch/msgid/20210908132933.3269-4-christian.koenig@amd.com
2021-09-03drm/ttm: cleanup ttm_resource_compatChristian König
Move that function into the resource handling and remove an unused parameter. Signed-off-by: Christian König <christian.koenig@amd.com> Reviewed-by: Huang Rui <ray.huang@amd.com> Link: https://patchwork.freedesktop.org/patch/msgid/20210831112110.113196-1-christian.koenig@amd.com
2021-09-01drm/ttm: Clear all DMA mappings on demandAndrey Grodzovsky
Used by drivers supporting hot unplug to handle all DMA IOMMU group related dependencies before the group is removed during device removal and we try to access it after free when last device pointer from user space is dropped. v3: Switch to ttm_bo_get_unless_zerom Iterate bdev for pinned list Switch to ttm_tt_unpopulate Signed-off-by: Andrey Grodzovsky <andrey.grodzovsky@amd.com> Reviewed-by: Christian König <christian.koenig@amd.com> Link: https://patchwork.freedesktop.org/patch/msgid/20210827203910.5565-3-andrey.grodzovsky@amd.com
2021-08-30drm/ttm: Create pinned listAndrey Grodzovsky
This list will be used to capture all non VRAM BOs not on LRU so when device is hot unplugged we can iterate the list and unmap DMA mappings before device is removed. v2: Reanme function to ttm_bo_move_to_pinned v3: Move the pinned list to ttm device Signed-off-by: Andrey Grodzovsky <andrey.grodzovsky@amd.com> Suggested-by: Christian König <christian.koenig@amd.com> Reviewed-by: Christian König <christian.koenig@amd.com> Link: https://patchwork.freedesktop.org/patch/451614/?series=93971
2021-08-25drm/ttm, drm/i915: Update ttm_move_memcpy for async useThomas Hellström
The buffer object argument to ttm_move_memcpy was only used to determine whether the destination memory should be cleared only or whether we should copy data. Replace it with a "clear" bool, and update the callers. The intention here is to be able to use ttm_move_memcpy() async under a dma-fence as a fallback if an accelerated blit fails in a security- critical path where data might leak if the blit is not properly performed. For that purpose the bo is an unsuitable argument since its relevant members might already have changed at call time. Finally, update the ttm_move_memcpy kerneldoc that seems to have ended up with a stale version. Cc: Christian König <christian.koenig@amd.com> Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com> Reviewed-by: Matthew Auld <matthew.auld@intel.com> Reviewed-by: Christian König <christian.koenig@amd.com> Link: https://lore.kernel.org/r/20210813144331.372957-3-thomas.hellstrom@linux.intel.com Link: https://patchwork.freedesktop.org/patch/msgid/20210813144331.372957-3-thomas.hellstrom@linux.intel.com
2021-08-23drm/ttm: remove ttm_tt_destroy_common v2Christian König
Move the functionality into ttm_tt_fini and ttm_bo_tt_destroy instead. We don't need this any more since we removed the unbind from the destroy code paths in the drivers. Also add a warning to ttm_tt_fini() if we try to fini a still populated TT object. v2: instead of reverting the patch move the functionality to different places. Signed-off-by: Christian König <christian.koenig@amd.com> Reviewed-by: Thomas Hellström <thomas.hellstrom@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20210728130552.2074-5-christian.koenig@amd.com
2021-08-16drm/ttm: Include pagemap.h from ttm_tt.hJason Ekstrand
It's needed for pgprot_t which is used in the header. Signed-off-by: Jason Ekstrand <jason@jlekstrand.net> Cc: Christian König <christian.koenig@amd.com> Link: https://patchwork.freedesktop.org/patch/msgid/20210812203443.1725307-2-jason@jlekstrand.net Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Christian König <christian.koenig@amd.com>
2021-08-16drm/ttm: ttm_bo_device is now ttm_deviceJason Ekstrand
These names were changed in commit 8af8a109b34fa88b8b91f25d11485b37d37549c3 Author: Christian König <christian.koenig@amd.com> Date: Thu Oct 1 14:51:40 2020 +0200 drm/ttm: device naming cleanup But he missed a couple of them. Signed-off-by: Jason Ekstrand <jason@jlekstrand.net> Cc: Christian König <christian.koenig@amd.com> Fixes: 8af8a109b34f ("drm/ttm: device naming cleanup") Link: https://patchwork.freedesktop.org/patch/msgid/20210812203443.1725307-1-jason@jlekstrand.net Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Christian König <christian.koenig@amd.com>
2021-06-23drm/ttm: add TTM_PL_FLAG_TEMPORARY flag v3Lang Yu
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 <christian.koenig@amd.com> Signed-off-by: Lang Yu <Lang.Yu@amd.com> Signed-off-by: Christian König <christian.koenig@amd.com> Signed-off-by: Andrey Grodzovsky <andrey.grodzovsky@amd.com> Acked-by: Nirmoy Das <nirmoy.das@amd.com> Link: https://patchwork.freedesktop.org/patch/msgid/20210622162339.761651-1-andrey.grodzovsky@amd.com
2021-06-07drm/ttm: Document and optimize ttm_bo_pipeline_gutting()Thomas Hellström
If the bo is idle when calling ttm_bo_pipeline_gutting(), we unnecessarily create a ghost object and push it out to delayed destroy. Fix this by adding a path for idle, and document the function. Also avoid having the bo end up in a bad state vulnerable to user-space triggered kernel BUGs if the call to ttm_tt_create() fails. Finally reuse ttm_bo_pipeline_gutting() in ttm_bo_evict(). Cc: Christian König <christian.koenig@amd.com> Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com> Reviewed-by: Christian König <christian.koenig@amd.com> Link: https://lore.kernel.org/r/20210602083818.241793-7-thomas.hellstrom@linux.intel.com
2021-06-07drm/ttm: Add a generic TTM memcpy move for page-based iomemThomas Hellström
The internal ttm_bo_util memcpy uses ioremap functionality, and while it probably might be possible to use it for copying in- and out of sglist represented io memory, using io_mem_reserve() / io_mem_free() callbacks, that would cause problems with fault(). Instead, implement a method mapping page-by-page using kmap_local() semantics. As an additional benefit we then avoid the occasional global TLB flushes of ioremap() and consuming ioremap space, elimination of a critical point of failure and with a slight change of semantics we could also push the memcpy out async for testing and async driver development purposes. A special linear iomem iterator is introduced internally to mimic the old ioremap behaviour for code-paths that can't immediately be ported over. This adds to the code size and should be considered a temporary solution. Looking at the code we have a lot of checks for iomap tagged pointers. Ideally we should extend the core memremap functions to also accept uncached memory and kmap_local functionality. Then we could strip a lot of code. Cc: Christian König <christian.koenig@amd.com> Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com> Reviewed-by: Christian König <christian.koenig@amd.com> Link: https://lore.kernel.org/r/20210602083818.241793-4-thomas.hellstrom@linux.intel.com
2021-06-04drm/ttm: flip the switch for driver allocated resources v2Christian König
Instead of both driver and TTM allocating memory finalize embedding the ttm_resource object as base into the driver backends. v2: fix typo in vmwgfx grid mgr and double init in amdgpu_vram_mgr.c Signed-off-by: Christian König <christian.koenig@amd.com> Reviewed-by: Matthew Auld <matthew.auld@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20210602100914.46246-10-christian.koenig@amd.com
2021-06-04drm/ttm: flip over the range manager to self allocated nodesChristian König
Start with the range manager to make the resource object the base class for the allocated nodes. While at it cleanup a lot of the code around that. Signed-off-by: Christian König <christian.koenig@amd.com> Reviewed-by: Matthew Auld <matthew.auld@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20210602100914.46246-2-christian.koenig@amd.com
2021-06-04drm/ttm: allocate resource object instead of embedding it v2Christian König
To improve the handling we want the establish the resource object as base class for the backend allocations. v2: add missing error handling Signed-off-by: Christian König <christian.koenig@amd.com> Acked-by: Thomas Hellström <thomas.hellstrom@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20210602100914.46246-1-christian.koenig@amd.com
2021-06-02drm/ttm: rename bo->mem and make it a pointerChristian König
When we want to decouble resource management from buffer management we need to be able to handle resources separately. Add a resource pointer and rename bo->mem so that all code needs to change to access the pointer instead. No functional change. Signed-off-by: Christian König <christian.koenig@amd.com> Reviewed-by: Matthew Auld <matthew.auld@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20210430092508.60710-4-christian.koenig@amd.com
2021-05-26drm/ttm: Remove ttm_bo_mmap() and friendsThomas Zimmermann
The function ttm_bo_mmap is unused. Remove it and it's helpers; including the verify_access callback in struct ttm_device_funcs. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Reviewed-by: Christian König <christian.koenig@amd.com> Link: https://patchwork.freedesktop.org/patch/msgid/20210525151055.8174-8-tzimmermann@suse.de
2021-05-19drm/ttm: Remap all page faults to per process dummy page.Andrey Grodzovsky
On device removal reroute all CPU mappings to dummy page. v3: Remove loop to find DRM file and instead access it by vma->vm_file->private_data. Move dummy page installation into a separate function. v4: Map the entire BOs VA space into on demand allocated dummy page on the first fault for that BO. v5: Remove duplicate return. v6: Polish ttm_bo_vm_dummy_page, remove superfluous code. Signed-off-by: Andrey Grodzovsky <andrey.grodzovsky@amd.com> Reviewed-by: Christian König <christian.koenig@amd.com> Link: https://patchwork.freedesktop.org/patch/msgid/20210512142648.666476-2-andrey.grodzovsky@amd.com
2021-04-26Merge drm/drm-next into drm-misc-nextMaxime Ripard
Christian needs some patches from drm/next Signed-off-by: Maxime Ripard <maxime@cerno.tech>
2021-04-23drm/ttm: move the page_alignment into the BO v2Christian König
The alignment is a constant property and shouldn't change. v2: move documentation as well as suggested by Matthew. Signed-off-by: Christian König <christian.koenig@amd.com> Reviewed-by: Matthew Auld <matthew.auld@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20210413135248.1266-4-christian.koenig@amd.com
2021-04-23drm/ttm: remove special handling for non GEM driversChristian König
vmwgfx is the only driver actually using this. Move the handling into the driver instead. Signed-off-by: Christian König <christian.koenig@amd.com> Acked-by: Huang Rui <ray.huang@amd.com> Reviewed-by: Zack Rusin <zackr@vmware.com> Link: https://patchwork.freedesktop.org/patch/msgid/20210419092853.1605-1-christian.koenig@amd.com
2021-04-13Merge drm/drm-fixes into drm-nextDaniel Vetter
msm-next pull request has a baseline with stuff from -fixes, roll forward first. Some simple conflicts in amdgpu, ttm and one in i915 where git gets confused and tries to add the same function twice. Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2021-03-29drm/ttm: switch back to static allocation limits for nowChristian König
The shrinker based approach still has some flaws. Especially that we need temporary pages to free up the pages allocated to the driver is problematic in a shrinker. Signed-off-by: Christian König <christian.koenig@amd.com> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/msgid/20210324134845.2338-1-christian.koenig@amd.com
2021-03-24drm/ttm: switch to per device LRU lockChristian König
Instead of having a global lock for potentially less contention. Signed-off-by: Christian König <christian.koenig@amd.com> Tested-by: Nirmoy Das <nirmoy.das@amd.com> Reviewed-by: Huang Rui <ray.huang@amd.com> Reviewed-by: Matthew Auld <matthew.auld@intel.com> Link: https://patchwork.freedesktop.org/patch/424010/
2021-03-24drm/ttm: remove swap LRU v3Christian König
Instead evict round robin from each devices SYSTEM and TT domain. v2: reorder num_pages access reported by Dan's script v3: fix rebase fallout, num_pages should be 32bit Signed-off-by: Christian König <christian.koenig@amd.com> Tested-by: Nirmoy Das <nirmoy.das@amd.com> Reviewed-by: Huang Rui <ray.huang@amd.com> Reviewed-by: Matthew Auld <matthew.auld@intel.com> Link: https://patchwork.freedesktop.org/patch/424009/
2021-03-24drm/ttm: move swapout logic around v3Christian König
Move the iteration of the global lru into the new function ttm_global_swapout() and use that instead in drivers. v2: consistently return int v3: fix build fail Signed-off-by: Christian König <christian.koenig@amd.com> Tested-by: Nirmoy Das <nirmoy.das@amd.com> Reviewed-by: Huang Rui <ray.huang@amd.com> Reviewed-by: Matthew Auld <matthew.auld@intel.com> Link: https://patchwork.freedesktop.org/patch/424008/
2021-03-15drm/ttm: make ttm_bo_unpin more defensiveChristian König
We seem to have some more driver bugs than thought. Signed-off-by: Christian König <christian.koenig@amd.com> Fixes: deb0814b43f3 ("drm/ttm: add ttm_bo_pin()/ttm_bo_unpin() v2") Acked-by: Matthew Auld <matthew.auld@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20210312093810.2202-1-christian.koenig@amd.com
2021-02-09drm/ttm: move memory accounting into vmwgfx v4Christian König
This is just another feature which is only used by VMWGFX, so move it into the driver instead. I've tried to add the accounting sysfs file to the kobject of the drm minor, but I'm not 100% sure if this works as expected. v2: fix typo in KFD and avoid 64bit divide v3: fix init order in VMWGFX v4: use pdev sysfs reference instead of drm Signed-off-by: Christian König <christian.koenig@amd.com> Reviewed-by: Zack Rusin <zackr@vmware.com> (v3) Tested-by: Nirmoy Das <nirmoy.das@amd.com> Link: https://patchwork.freedesktop.org/patch/msgid/20210208133226.36955-2-christian.koenig@amd.com
2021-02-09drm/ttm: rework ttm_tt page limit v4Christian König
TTM implements a rather extensive accounting of allocated memory. There are two reasons for this: 1. It tries to block userspace allocating a huge number of very small BOs without accounting for the kmalloced memory. 2. Make sure we don't over allocate and run into an OOM situation during swapout while trying to handle the memory shortage. This is only partially a good idea. First of all it is perfectly valid for an application to use all of system memory, limiting it to 50% is not really acceptable. What we need to take care of is that the application is held accountable for the memory it allocated. This is what control mechanisms like memcg and the normal Linux page accounting already do. Making sure that we don't run into an OOM situation while trying to cope with a memory shortage is still a good idea, but this is also not very well implemented since it means another opportunity of recursion from the driver back into TTM. So start to rework all of this by implementing a shrinker callback which allows for TT object to be swapped out if necessary. v2: Switch from limit to shrinker callback. v3: fix gfp mask handling, use atomic for swapable_pages, add debugfs v4: drop the extra gfp_mask checks Signed-off-by: Christian König <christian.koenig@amd.com> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/msgid/20210208133226.36955-1-christian.koenig@amd.com
2021-02-09drm/ttm: fix removal of bo_count sysfs fileChristian König
Only a zombie leftover from rebasing. Signed-off-by: Christian König <christian.koenig@amd.com> Fixes: 3763d635deaa ("drm/ttm: add debugfs directory v2") Reported-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/msgid/20210209131756.24650-1-christian.koenig@amd.com
2021-01-21drm/ttm: device naming cleanupChristian König
Rename ttm_bo_device to ttm_device. Rename ttm_bo_driver to ttm_device_funcs. Rename ttm_bo_global to ttm_global. Move global and device related functions to ttm_device.[ch]. No functional change. Signed-off-by: Christian König <christian.koenig@amd.com> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/415222/
2021-01-18drm/ttm: WARN_ON non-empty lru when disabling a resource managerDaniel Vetter
ttm_resource_manager->use_type is only used for runtime changes by vmwgfx. I think ideally we'd push this functionality into drivers - ttm itself does not provide any locking to guarantee this is safe, so the only way this can work at runtime is if the driver does provide additional guarantees. vwmgfx does that through the vmw_private->reservation_sem. Therefore supporting this feature in shared code feels a bit misplaced. As a first step add a WARN_ON to make sure the resource manager is empty. This is just to make sure I actually understand correctly what vmwgfx is doing, and to make sure an eventual subsequent refactor doesn't break anything. This check should also be useful for other drivers, to make sure they haven't leaked anything. Reviewed-by: Roland Scheidegger <sroland@vmware.com> Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Daniel Vetter <daniel.vetter@intel.com> Cc: Christian Koenig <christian.koenig@amd.com> Cc: Huang Rui <ray.huang@amd.com> Link: https://patchwork.freedesktop.org/patch/msgid/20201211162942.3399050-3-daniel.vetter@ffwll.ch
2020-12-15drm/ttm: cleanup LRU handling furtherChristian König
We only completely delete the BO from the LRU on destruction. Signed-off-by: Christian König <christian.koenig@amd.com> Acked-by: Andrey Grodzovsky <andrey.grodzovsky@amd.com> Link: https://patchwork.freedesktop.org/patch/404618/
2020-12-14drm/ttm: cleanup BO size handling v3Christian König
Based on an idea from Dave, but cleaned up a bit. We had multiple fields for essentially the same thing. Now bo->base.size is the original size of the BO in arbitrary units, usually bytes. bo->mem.num_pages is the size in number of pages in the resource domain of bo->mem.mem_type. v2: use the GEM object size instead of the BO size v3: fix printks in some places Signed-off-by: Christian König <christian.koenig@amd.com> Reviewed-by: Huang Rui <ray.huang@amd.com> (v1) Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/406831/
2020-12-01drm/ttm/drivers: remove unecessary ttm_module.h include v2Christian König
ttm_module.h deals with internals of TTM and should never be include outside of it. v2: also move the file around Signed-off-by: Christian König <christian.koenig@amd.com> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/404885/
2020-11-30drm/ttm: nuke ttm_dma_tt_initChristian König
Not used any more. Signed-off-by: Christian König <christian.koenig@amd.com> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/403837/
2020-11-27drm/ttm: Warn on pinning without holding a referenceDaniel Vetter
Not technically a problem for ttm, but very likely a driver bug and pretty big time confusing for reviewing code. So warn about it, both at cleanup time (so we catch these for sure) and at pin/unpin time (so we know who's the culprit). Reviewed-by: Huang Rui <ray.huang@amd.com> Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Daniel Vetter <daniel.vetter@intel.com> Cc: Christian Koenig <christian.koenig@amd.com> Cc: Huang Rui <ray.huang@amd.com> Link: https://patchwork.freedesktop.org/patch/msgid/20201028113120.3641237-1-daniel.vetter@ffwll.ch
2020-11-11drm/ttm: add multihop infrastrucutre (v3)Dave Airlie
Currently drivers get called to move a buffer, but if they have to move it temporarily through another space (SYSTEM->VRAM via TT) then they can end up with a lot of ttm->driver->ttm call stacks, if the temprorary space moves requires eviction. Instead of letting the driver do all the placement/space for the temporary, allow it to report back (-EMULTIHOP) and a placement (hop) to the move code, which will then do the temporary move, and the correct placement move afterwards. This removes a lot of code from drivers, at the expense of adding some midlayering. I've some further ideas on how to turn it inside out, but I think this is a good solution to the call stack problems. v2: separate out the driver patches, add WARN for getting MULTHOP in paths we shouldn't (Daniel) v3: use memset (Christian) Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Reviewed-by: hristian König <christian.koenig@amd.com> Signed-off-by: Dave Airlie <airlied@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20201109005432.861936-2-airlied@gmail.com
2020-11-09drm/ttm: Add vmap/vunmap to TTM and TTM GEM helpersThomas Zimmermann
The new functions ttm_bo_{vmap,vunmap}() map and unmap a TTM BO in kernel address space. The mapping's address is returned as struct dma_buf_map. Each function is a simplified version of TTM's existing kmap code. Both functions respect the memory's location ani/or writecombine flags. On top TTM's functions, GEM TTM helpers got drm_gem_ttm_{vmap,vunmap}(), two helpers that convert a GEM object into the TTM BO and forward the call to TTM's vmap/vunmap. These helpers can be dropped into the rsp GEM object callbacks. v5: * use size_t for storing mapping size (Christian) * ignore premapped memory areas correctly in ttm_bo_vunmap() * rebase onto latest TTM interfaces (Christian) * remove BUG() from ttm_bo_vmap() (Christian) v4: * drop ttm_kmap_obj_to_dma_buf() in favor of vmap helpers (Daniel, Christian) Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Reviewed-by: Christian König <christian.koenig@amd.com> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Tested-by: Sam Ravnborg <sam@ravnborg.org> Link: https://patchwork.freedesktop.org/patch/msgid/20201103093015.1063-6-tzimmermann@suse.de
2020-11-04drm/ttm: replace context flags with bools v2Christian König
The ttm_operation_ctx structure has a mixture of flags and bools. Drop the flags and replace them with bools as well. v2: fix typos, improve comments Signed-off-by: Christian König <christian.koenig@amd.com> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/398686/
2020-11-04drm/ttm: rework no_retry handling v2Christian König
During eviction we do want to trigger the OOM killer. Only while doing new allocations we should try to avoid that and return -ENOMEM to the application. v2: rename the flag to gfp_retry_mayfail. Signed-off-by: Christian König <christian.koenig@amd.com> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/398685/
2020-10-29drm/ttm: nuke old page allocatorChristian König
Not used any more. Signed-off-by: Christian König <christian.koenig@amd.com> Reviewed-by: Dave Airlie <airlied@redhat.com> Reviewed-by: Madhav Chauhan <madhav.chauhan@amd.com> Tested-by: Huang Rui <ray.huang@amd.com> Link: https://patchwork.freedesktop.org/patch/397087/?series=83051&rev=1
2020-10-29drm/ttm: wire up the new pool as default one v2Christian König
Provide the necessary parameters by all drivers and use the new pool alloc when no driver specific function is provided. v2: fix the GEM VRAM helpers Signed-off-by: Christian König <christian.koenig@amd.com> Reviewed-by: Dave Airlie <airlied@redhat.com> Reviewed-by: Madhav Chauhan <madhav.chauhan@amd.com> Tested-by: Huang Rui <ray.huang@amd.com> Link: https://patchwork.freedesktop.org/patch/397081/?series=83051&rev=1
generated by cgit v1.2.3 (git 2.39.1) at 2025-07-30 07:32:30 +0000