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path: root/drivers/gpu/drm/nouveau/nouveau_gem.c
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2016-05-21Merge branch 'linux-4.7' of git://github.com/skeggsb/linux into drm-nextDave Airlie
Nothing too exciting here, there's a larger chunk of work that still needs more testing but not likely to get that done today - so - here's the rest of it. Assuming nothing else goes horribly wrong, I should be able to send the rest Monday if it isn't too late.... Changes: - Improvements to power sensor support - Initial attempt at GM108 support - Minor fixes to GR init + ucode - Make use of topology information (provided by the GPU) in various places, should at least fix some fault recovery issues and engine/runlist mapping confusion on newer GPUs. * 'linux-4.7' of git://github.com/skeggsb/linux: (51 commits) drm/nouveau/gr/gf100-: fix race condition in fecs/gpccs ucode drm/nouveau/core: recognise GM108 chipsets drm/nouveau/gr/gm107-: fix touching non-existent ppcs in attrib cb setup drm/nouveau/gr/gk104-: share implementation of ppc exception init drm/nouveau/gr/gk104-: move rop_active_fbps init to nonctx drm/nouveau/bios/pll: check BIT table version before trying to parse it drm/nouveau/bios/pll: prevent oops when limits table can't be parsed drm/nouveau/volt/gk104: round up in gk104_volt_set drm/nouveau/fb/gm200: setup mmu debug buffer registers at init() drm/nouveau/fb/gk20a,gm20b: setup mmu debug buffer registers at init() drm/nouveau/fb/gf100-: allocate mmu debug buffers drm/nouveau/fb: allow chipset-specific actions for oneinit() drm/nouveau/gr/gm200-: fix bad hardcoding of a max-tpcs-per-gpc value drm/nouveau/gr/gm200-: rop count == ltc count drm/nouveau/gr/gm200: modify the mask when copying mmu settings from fb drm/nouveau/gr/gm200: move some code into init_gpc_mmu() hook drm/nouveau/gr/gm200: make generate_main() static drm/nouveau/gr/gf100-: abstract fetching rop count drm/nouveau/gr/gf100-: rename magic_not_rop_nr to screen_tile_row_offset drm/nouveau/gr/gf100-: remove hardcoded idle_timeout values ...
2016-05-20drm/nouveau: rename nouveau_drm.h to nouveau_drv.hBen Skeggs
Fixes out-of-tree build issue where uapi/drm/nouveau_drm.h gets picked up instead. Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2016-05-18drm: remove unused dev variablesArnd Bergmann
After drm_gem_object_lookup() was changed along with all its callers, we have several drivers that have unused variables: drm/armada/armada_crtc.c: In function 'armada_drm_crtc_cursor_set': drm/armada/armada_crtc.c:900:21: error: unused variable 'dev' [-Werror=unused-variable] drm/nouveau/nouveau_gem.c: In function 'validate_init': drm/nouveau/nouveau_gem.c:371:21: error: unused variable 'dev' [-Werror=unused-variable] drm/nouveau/nv50_display.c: In function 'nv50_crtc_cursor_set': drm/nouveau/nv50_display.c:1308:21: error: unused variable 'dev' [-Werror=unused-variable] drm/radeon/radeon_cs.c: In function 'radeon_cs_parser_relocs': drm/radeon/radeon_cs.c:77:21: error: unused variable 'ddev' [-Werror=unused-variable] This fixes all the instances I found with ARM randconfig builds so far. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Fixes: a8ad0bd84f98 ("drm: Remove unused drm_device from drm_gem_object_lookup()") Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: http://patchwork.freedesktop.org/patch/msgid/1463587653-3035181-6-git-send-email-arnd@arndb.de
2016-05-17drm: Remove unused drm_device from drm_gem_object_lookup()Chris Wilson
drm_gem_object_lookup() has never required the drm_device for its file local translation of the user handle to the GEM object. Let's remove the unused parameter and save some space. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: dri-devel@lists.freedesktop.org Cc: Dave Airlie <airlied@redhat.com> Cc: Daniel Vetter <daniel.vetter@ffwll.ch> [danvet: Fixup kerneldoc too.] Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2016-05-04drm/ttm: remove lazy parameter from ttm_bo_waitChristian König
Not used any more. Reviewed-by: Sinclair Yeh <syeh@vmware.com> Signed-off-by: Christian König <christian.koenig@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-05-04drm/ttm: remove use_ticket parameter from ttm_bo_reserveChristian König
Not used any more. Reviewed-by: Sinclair Yeh <syeh@vmware.com> Signed-off-by: Christian König <christian.koenig@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2015-11-03drm/nouveau/abi16: remove unused argument from nouveau_abi16_get()Ben Skeggs
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2015-11-03drm/nouveau: fix memory leakSudip Mukherjee
If pm_runtime_get_sync() we were going to "out" but we missed freeing vma. Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2015-11-03drm/nouveau: remove unnecessary usage of object handlesBen Skeggs
No longer required in a lot of cases, as objects are identified over NVIF via an alternate mechanism since the rework. Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2015-11-03drm/nouveau/gem: return only valid domain when there's only oneIlia Mirkin
On nv50+, we restrict the valid domains to just the one where the buffer was originally created. However after the buffer is evicted to system memory, we might move it back to a different domain that was not originally valid. When sharing the buffer and retrieving its GEM_INFO data, we still want the domain that will be valid for this buffer in a pushbuf, not the one where it currently happens to be. This resolves fdo#92504 and several others. These are due to suspend evicting all buffers, making it more likely that they temporarily end up in the wrong place. Cc: stable@vger.kernel.org Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=92504 Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2015-08-28drm/nouveau/fb: convert to new-style nvkm_subdevBen Skeggs
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2015-08-28drm/nouveau/nvif: simplify and tidy library interfacesBen Skeggs
A variety of tweaks to the NVIF library interfaces, mostly ripping out things that turned out to be not so useful. - Removed refcounting from nvif_object, callers are expected to not be stupid instead. - nvif_client is directly reachable from anything derived from nvif_object, removing the need for heuristics to locate it - _new() versions of interfaces, that allocate memory for the object they construct, have been removed. The vast majority of callers used the embedded _init() interfaces. - No longer storing constructor arguments (and the data returned from nvkm) inside nvif_object, it's more or less unused and just wastes memory. Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2015-08-28drm/nouveau: use dev_* for loggingBen Skeggs
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2015-08-28drm/nouveau/fb: cosmetic changesBen Skeggs
This is purely preparation for upcoming commits, there should be no code changes here. Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2015-06-30drm/nouveau/gem: use kvfree() in u_free()Pekka Enberg
Use kvfree() instead of open-coding it. Signed-off-by: Pekka Enberg <penberg@kernel.org> Cc: David Airlie <airlied@linux.ie> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-04-14drm/nouveau/gem: allow user-space to specify an object should be coherentAlexandre Courbot
User-space use mappable BOs notably for fences, and expects that a value update by the GPU will be immediatly visible through the user-space mapping. ARM has a property that may prevent this from happening though: memory can be mapped multiple times only if the different mappings share the same caching properties. However all the lowmem memory is already identity-mapped into the kernel with cache enabled, so when user-space requests an uncached mapping, we actually get an "undefined caching policy" one and this has strange side-effects described on Freedesktop bug 86690. To prevent this from happening, allow user-space to explicitly specify which objects should be coherent, and create such objects with the TTM_PL_FLAG_UNCACHED flag. This will make TTM allocate memory using the DMA API, which will fix the identify mapping and allow us to safely map the objects to user-space uncached. Signed-off-by: Alexandre Courbot <acourbot@nvidia.com> Reviewed-by: Lucas Stach <dev@lynxeye.de> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2015-01-22drm/nouveau: finalise nvkm namespace switch (no binary change)Ben Skeggs
The namespace of NVKM is being changed to nvkm_ instead of nouveau_, which will be used for the DRM part of the driver. This is being done in order to make it very clear as to what part of the driver a given symbol belongs to, and as a minor step towards splitting the DRM driver out to be able to stand on its own (for virt). Because there's already a large amount of churn here anyway, this is as good a time as any to also switch to NVIDIA's device and chipset naming to ease collaboration with them. A comparison of objdump disassemblies proves no code changes. Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2015-01-22drm/nouveau/nvif: namespace of nvkm accessors (no binary change)Ben Skeggs
NVKM is having it's namespace switched to nvkm_, which will conflict with these functions (which are workarounds for the fact that as of yet, we still aren't able to split DRM and NVKM completely). A comparison of objdump disassemblies proves no code changes. Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2015-01-22drm/nouveau/gem: Remove unused functionRickard Strandqvist
Remove the function domain_to_ttm() that is not used anywhere. This was partially found by using a static code analysis program called cppcheck. Signed-off-by: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2015-01-08Merge branch 'linux-3.19' of ↵Dave Airlie
git://anongit.freedesktop.org/git/nouveau/linux-2.6 into drm-fixes - Fix BUG() on !SMP builds - Fix for OOPS on pre-NV50 that snuck into -next - MCP7[789A] hang fix where firmware hasn't already setup NISO pollers - NV4x IGP MSI disable, it doesn't appear to work correctly - Add GK208B to recognised boards (no code change aside from adding chipset recognition) * 'linux-3.19' of git://anongit.freedesktop.org/git/nouveau/linux-2.6: drm/nouveau/nouveau: Do not BUG_ON(!spin_is_locked()) on UP drm/nv4c/mc: disable msi drm/nouveau/fb/ram/mcp77: enable NISO poller drm/nouveau/fb/ram/mcp77: use carveout reg to determine size drm/nouveau/fb/ram/mcp77: subclass nouveau_ram drm/nouveau: wake up the card if necessary during gem callbacks drm/nouveau/device: Add support for GK208B, resolves bug 86935 drm/nouveau: fix missing return statement in nouveau_ttm_tt_unpopulate drm/nouveau/bios: fix oops on pre-nv50 chipsets
2014-12-24Revert "drm/gem: Warn on illegal use of the dumb buffer interface v2"Dave Airlie
This reverts commit 355a70183848f21198e9f6296bd646df3478a26d. This had some bad side effects under normal operation, and should have been dropped earlier. Signed-off-by: Dave Airlie <airlied@redhat.com>
2014-12-22drm/nouveau: wake up the card if necessary during gem callbacksBen Skeggs
The failure paths if we fail to wake the card are less than desirable, but there's not really a graceful way to handle this case currently. I'll keep this situation in mind when I get to fixing other vm-related issues. Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2014-12-02drm/nouveau: synchronize BOs when requiredAlexandre Courbot
On architectures for which access to GPU memory is non-coherent, caches need to be flushed and invalidated explicitly when BO control changes between CPU and GPU. This patch adds buffer synchronization functions which invokes the correct API (PCI or DMA) to ensure synchronization is effective. Based on the TTM DMA cache helper patches by Lucas Stach. Signed-off-by: Lucas Stach <dev@lynxeye.de> Signed-off-by: Alexandre Courbot <acourbot@nvidia.com> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2014-11-21drm/gem: Warn on illegal use of the dumb buffer interface v2Thomas Hellstrom
It happens on occasion that developers of generic user-space applications abuse the dumb buffer API to get hold of drm buffers that they can both mmap() and use for GPU acceleration, using the assumptions that dumb buffers and buffers available for GPU are a) The same type and can be aribtrarily type-casted. b) fully coherent. This patch makes the most widely used drivers warn nicely when that happens, the next step will be to fail. v2: Move drmP.h changes to drm_gem.h. Fix Radeon dumb mmap breakage. Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Acked-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2014-10-01drm/nouveau: export reservation_object from dmabuf to ttmMaarten Lankhorst
Adds an extra argument to nouveau_bo_new, which is only used in nouveau_prime.c. Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>
2014-09-30drm/nouveau: specify if interruptible wait is desired in nouveau_fence_syncMaarten Lankhorst
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>
2014-09-02drm/nouveau: use shared fences for readable objectsMaarten Lankhorst
nouveau keeps track in userspace whether a buffer is being written to or being read, but it doesn't use that information. Change this to allow multiple readers on the same bo. Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com> Acked-by: Ben Skeggs <bskeggs@redhat.com>
2014-09-02drm/nouveau: Keep only a single list for validation.Maarten Lankhorst
Maintain the original order to handle VRAM/GART/mixed correctly for <nv50, it's likely not as important on newer cards. Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com> Acked-by: Ben Skeggs <bskeggs@redhat.com>
2014-09-02drm/nouveau: use rcu in nouveau_gem_ioctl_cpu_prepMaarten Lankhorst
With the conversion to the reservation api this should be safe. Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com> Acked-by: Ben Skeggs <bskeggs@redhat.com>
2014-09-02drm/ttm: flip the switch, and convert to dma_fenceMaarten Lankhorst
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>
2014-09-02drm/nouveau: rework to new fence interfaceMaarten Lankhorst
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com> Acked-by: Ben Skeggs <bskeggs@redhat.com>
2014-09-01drm/ttm: kill fence_lockMaarten Lankhorst
No users are left, kill it off! :D Conversion to the reservation api is next on the list, after that the functionality can be restored with rcu. Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>
2014-09-01drm/nouveau: add reservation to nouveau_gem_ioctl_cpu_prepMaarten Lankhorst
Apart from some code inside ttm itself and nouveau_bo_vma_del, this is the only place where ttm_bo_wait is used without a reservation. Fix this so we can remove the fence_lock later on. After the switch to rcu the reservation lock will be removed again. Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com> Acked-by: Ben Skeggs <bskeggs@redhat.com>
2014-08-10drm/nouveau: port to nvif client/device/objectsBen Skeggs
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2014-08-10drm/nouveau: initial pass at moving to struct nvif_deviceBen Skeggs
This is an attempt at isolating some of the changes necessary to port to NVIF in a separate commit. Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2014-08-10drm/nouveau: fix some usages of the wrong print functionBen Skeggs
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2014-08-10drm/nouveau: store a pointer to vm in nouveau_cliBen Skeggs
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2014-07-22drm/ttm: Fix a few sparse warningsThierry Reding
The final parameter to ttm_bo_reserve() is a pointer, therefore callers should use NULL instead of 0. Fixes a bunch of sparse warnings of this type: warning: Using plain integer as NULL pointer Signed-off-by: Thierry Reding <treding@nvidia.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2014-03-16drm: init TTM dev_mapping in ttm_bo_device_init()David Herrmann
With dev->anon_inode we have a global address_space ready for operation right from the beginning. Therefore, there is no need to do a delayed setup with TTM. Instead, set dev_mapping during initialization in ttm_bo_device_init() and remove any "if (dev_mapping)" conditions. Cc: Dave Airlie <airlied@redhat.com> Cc: Ben Skeggs <bskeggs@redhat.com> Cc: Maarten Lankhorst <maarten.lankhorst@canonical.com> Cc: Alex Deucher <alexdeucher@gmail.com> Cc: Thomas Hellstrom <thellstrom@vmware.com> Signed-off-by: David Herrmann <dh.herrmann@gmail.com>
2014-03-16drm: use anon-inode instead of relying on cdevsDavid Herrmann
DRM drivers share a common address_space across all character-devices of a single DRM device. This allows simple buffer eviction and mapping-control. However, DRM core currently waits for the first ->open() on any char-dev to mark the underlying inode as backing inode of the device. This delayed initialization causes ugly conditions all over the place: if (dev->dev_mapping) do_sth(); To avoid delayed initialization and to stop reusing the inode of the char-dev, we allocate an anonymous inode for each DRM device and reset filp->f_mapping to it on ->open(). Signed-off-by: David Herrmann <dh.herrmann@gmail.com>
2014-01-23drm/nouveau/gem: remove (now) unneeded pre-validate fence syncBen Skeggs
Now that nouveau_bo.c can handle sync when it actually needs to, we can remove this and avoid a double semaphore acquire when syncing in the command submission path. Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2013-12-18drm: Kill DRM_COPY_(TO|FROM)_USERDaniel Vetter
Less yelling ftw! Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Dave Airlie <airlied@redhat.com>
2013-11-14drm/nouveau: when bailing out of a pushbuf ioctl, do not remove previous fenceBen Skeggs
Cc: stable@vger.kernel.org Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2013-11-14drm/nouveau: allow nouveau_fence_ref() to be a noopBen Skeggs
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2013-10-09drm: kill ->gem_init_object() and friendsDavid Herrmann
All drivers embed gem-objects into their own buffer objects. There is no reason to keep drm_gem_object_alloc(), gem->driver_private and ->gem_init_object() anymore. New drivers are highly encouraged to do the same. There is no benefit in allocating gem-objects separately. Cc: Dave Airlie <airlied@gmail.com> Cc: Alex Deucher <alexdeucher@gmail.com> Cc: Daniel Vetter <daniel@ffwll.ch> Cc: Jerome Glisse <jglisse@redhat.com> Cc: Rob Clark <robdclark@gmail.com> Cc: Inki Dae <inki.dae@samsung.com> Cc: Ben Skeggs <skeggsb@gmail.com> Cc: Patrik Jakobsson <patrik.r.jakobsson@gmail.com> Signed-off-by: David Herrmann <dh.herrmann@gmail.com> Acked-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2013-10-09drm/nouveau: embed gem object in nouveau_boDavid Herrmann
There is no reason to keep the gem object separately allocated. nouveau is the last user of gem_obj->driver_private, so if we embed it, we can get rid of 8bytes per gem-object. The implementation follows the radeon driver. bo->gem is only valid, iff the bo was created via the gem helpers _and_ iff the user holds a valid gem reference. That is, as the gem object holds a reference to the nouveau_bo. If you use nouveau_ref() to gain a bo reference, you are not guaranteed to also hold a gem reference. The gem object might get destroyed after the last user drops the gem-ref via drm_gem_object_unreference(). Use drm_gem_object_reference() to gain a gem-reference. For debugging, we can use bo->gem.filp != NULL to test whether a gem-bo is valid. However, this shouldn't be used for real functionality to avoid gem-internal dependencies. Note that the implementation follows the previous style. However, we no longer can check for bo->gem != NULL to test for a valid gem object. This wasn't done before, so we should be safe now. Signed-off-by: David Herrmann <dh.herrmann@gmail.com> Acked-by: Maarten Lankhorst <maarten.lankhorst@canonical.com> Reviewed-by: Ben Skeggs <bskeggs@redhat.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2013-09-04drm/nouveau: fix command submission to use vmalloc for big allocationsMaarten Lankhorst
I was getting a order 4 allocation failure from kmalloc when testing some game after a few days uptime with some suspend/resumes. For big allocations vmalloc should be used instead. Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2013-08-07Merge tag 'drm-intel-next-2013-07-26-fixed' of ↵Dave Airlie
git://people.freedesktop.org/~danvet/drm-intel into drm-next Neat that QA (and Ben) keeps on humming along while I'm on vacation, so you already get the next feature pull request: - proper eLLC support for HSW from Ben - more interrupt refactoring - add w/a tags where we implement them already (Damien) - hangcheck fixes (Chris) + hangcheck stats (Mika) - flesh out the new vm structs for ppgtt and ggtt (Ben) - PSR for Haswell, still disabled by default (Rodrigo et al.) - pc8+ refclock sequence code from Paulo - more interrupt refactoring from Paulo, unifying ilk/snb with the ivb/hsw interrupt code - full solution for the Haswell concurrent reg access issues (Chris) - fix racy object accounting, used by some new leak tests - fix sync polarity settings on ch7xxx dvo encoder - random bits&pieces, little fixes and better debug output all over [airlied: fix conflict with drm_mm cleanups] * tag 'drm-intel-next-2013-07-26-fixed' of git://people.freedesktop.org/~danvet/drm-intel: (289 commits) drm/i915: Do not dereference NULL crtc or fb until after checking drm/i915: fix pnv display core clock readout out drm/i915: Replace open-coded offset_in_page() drm/i915: Retry DP aux_ch communications with a different clock after failure drm/i915: Add messages useful for HPD storm detection debugging (v2) drm/i915: dvo_ch7xxx: fix vsync polarity setting drm/i915: fix the racy object accounting drm/i915: Convert the register access tracepoint to be conditional drm/i915: Squash gen lookup through multiple indirections inside GT access drm/i915: Use the common register access functions for NOTRACE variants drm/i915: Use a private interface for register access within GT drm/i915: Colocate all GT access routines in the same file drm/i915: fix reference counting in i915_gem_create drm/i915: Use Graphics Base of Stolen Memory on all gen3+ drm/i915: disable stolen mem for OVERLAY_NEEDS_PHYSICAL drm/i915: add functions to disable and restore LCPLL drm/i915: disable CLKOUT_DP when it's not needed drm/i915: extend lpt_enable_clkout_dp drm/i915: fix up error cleanup in i915_gem_object_bind_to_gtt drm/i915: Add some debug breadcrumbs to connector detection ...
2013-07-25drm/ttm: convert to unified vma offset managerDavid Herrmann
Use the new vma-manager infrastructure. This doesn't change any implementation details as the vma-offset-manager is nearly copied 1-to-1 from TTM. The vm_lock is moved into the offset manager so we can drop it from TTM. During lookup, we use the vma locking helpers to take a reference to the found object. In all other scenarios, locking stays the same as before. We always guarantee that drm_vma_offset_remove() is called only during destruction. Hence, helpers like drm_vma_node_offset_addr() are always safe as long as the node has a valid offset. This also drops the addr_space_offset member as it is a copy of vm_start in vma_node objects. Use the accessor functions instead. v4: - remove vm_lock - use drm_vma_offset_lock_lookup() to protect lookup (instead of vm_lock) Cc: Dave Airlie <airlied@redhat.com> Cc: Ben Skeggs <bskeggs@redhat.com> Cc: Maarten Lankhorst <maarten.lankhorst@canonical.com> Cc: Martin Peres <martin.peres@labri.fr> Cc: Alex Deucher <alexander.deucher@amd.com> Cc: Thomas Hellstrom <thellstrom@vmware.com> Signed-off-by: David Herrmann <dh.herrmann@gmail.com> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Dave Airlie <airlied@gmail.com>
2013-07-10drm/nouveau: do not unpin in nouveau_gem_object_delMaarten Lankhorst
This should no longer be required, and is harmful for framebuffer pinning. Also add a warning if unpin causes the pin count to drop below 0. Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>