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2019-01-04drivers/dma-buf/udmabuf.c: convert to use vm_fault_tSouptick Joarder1-1/+1
Use new return type vm_fault_t for fault handler. Link: http://lkml.kernel.org/r/20181106173628.GA12989@jordon-HP-15-Notebook-PC Signed-off-by: Souptick Joarder <jrdr.linux@gmail.com> Cc: Gerd Hoffmann <kraxel@redhat.com> Cc: Sumit Semwal <sumit.semwal@linaro.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-12-03dma-buf: add dma_fence_get_stubChristian König1-1/+35
Extract of useful code from the timeline work. This provides a function to return a stub or dummy fence which is always signaled. Signed-off-by: Christian König <christian.koenig@amd.com> Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> Reviewed-by: Chunming Zhou <david1.zhou@amd.com> Link: https://patchwork.freedesktop.org/patch/265248/
2018-11-29Merge v4.20-rc4 into drm-nextDave Airlie1-0/+1
Requested by Boris Brezillon for some vc4 fixes that are needed for future vc4 work. Signed-off-by: Dave Airlie <airlied@redhat.com>
2018-11-16udmabuf: set read/write flag when exportingGerd Hoffmann1-0/+1
Otherwise, mmap fails when done with PROT_WRITE. Suggested-by: Gurchetan Singh <gurchetansingh@chromium.org> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Gurchetan Singh <gurchetansingh@chromium.org> Tested-by: Gurchetan Singh <gurchetansingh@chromium.org> Link: http://patchwork.freedesktop.org/patch/msgid/20181114122029.16766-1-kraxel@redhat.com
2018-10-26dma-buf: Update reservation shared_count after adding the new fenceChris Wilson1-7/+7
We need to serialise the addition of a new fence into the shared list such that the fence is visible before we claim it is there. Otherwise a concurrent reader of the shared fence list will see an uninitialised fence slot before it is set. <4> [109.613162] general protection fault: 0000 [#1] PREEMPT SMP PTI <4> [109.613177] CPU: 1 PID: 1357 Comm: gem_busy Tainted: G U 4.19.0-rc8-CI-CI_DRM_5035+ #1 <4> [109.613189] Hardware name: Dell Inc. XPS 8300 /0Y2MRG, BIOS A06 10/17/2011 <4> [109.613252] RIP: 0010:i915_gem_busy_ioctl+0x146/0x380 [i915] <4> [109.613261] Code: 0b 43 04 49 83 c6 08 4d 39 e6 89 43 04 74 6d 4d 8b 3e e8 5d 54 f4 e0 85 c0 74 0d 80 3d 08 71 1d 00 00 0f 84 bb 00 00 00 31 c0 <49> 81 7f 08 20 3a 2c a0 75 cc 41 8b 97 50 02 00 00 49 8b 8f a8 00 <4> [109.613283] RSP: 0018:ffffc9000044bcf8 EFLAGS: 00010246 <4> [109.613292] RAX: 0000000000000000 RBX: ffffc9000044bdc0 RCX: 0000000000000001 <4> [109.613302] RDX: 0000000000000000 RSI: 00000000ffffffff RDI: ffffffff822474a0 <4> [109.613311] RBP: ffffc9000044bd28 R08: ffff88021e158680 R09: 0000000000000001 <4> [109.613321] R10: 0000000000000040 R11: 0000000000000000 R12: ffff88021e1641b8 <4> [109.613331] R13: 0000000000000003 R14: ffff88021e1641b0 R15: 6b6b6b6b6b6b6b6b <4> [109.613341] FS: 00007f9c9fc84980(0000) GS:ffff880227a40000(0000) knlGS:0000000000000000 <4> [109.613352] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 <4> [109.613360] CR2: 00007f9c9fcb8000 CR3: 00000002247d4005 CR4: 00000000000606e0 Fixes: 27836b641c1b ("dma-buf: remove shared fence staging in reservation object") Testcase: igt/gem_busy/close-race Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Christian König <christian.koenig@amd.com> Cc: Junwei Zhang <Jerry.Zhang@amd.com> Cc: Huang Rui <ray.huang@amd.com> Cc: Sumit Semwal <sumit.semwal@linaro.org> Reviewed-by: Christian König <christian.koenig@amd.com> Link: https://patchwork.freedesktop.org/patch/msgid/20181026080302.11507-1-chris@chris-wilson.co.uk
2018-10-25dma-buf: allow reserving more than one shared fence slotChristian König1-5/+8
Let's support simultaneous submissions to multiple engines. Signed-off-by: Christian König <christian.koenig@amd.com> Reviewed-by: Michel Dänzer <michel.daenzer@amd.com> Reviewed-by: Junwei Zhang <Jerry.Zhang@amd.com> Reviewed-by: Huang Rui <ray.huang@amd.com> Link: https://patchwork.kernel.org/patch/10626149/
2018-10-25dma-buf: remove shared fence staging in reservation objectChristian König1-120/+58
No need for that any more. Just replace the list when there isn't enough room any more for the additional fence. Signed-off-by: Christian König <christian.koenig@amd.com> Reviewed-by: Junwei Zhang <Jerry.Zhang@amd.com> Reviewed-by: Huang Rui <ray.huang@amd.com> Link: https://patchwork.kernel.org/patch/10626143/
2018-09-14udmabuf: fix error code in map_udmabuf()Dan Carpenter1-1/+3
We accidentally forgot to set "ret" on this error path so it means we return NULL instead of an error pointer. The caller checks for NULL and changes it to an error pointer so it doesn't cause an issue at run time. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Link: http://patchwork.freedesktop.org/patch/msgid/20180914065615.GA12043@mwanda Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2018-09-12udmabuf: use sizeof(variable) instead of sizeof(type)Gerd Hoffmann1-3/+3
Reported-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Link: http://patchwork.freedesktop.org/patch/msgid/20180911134216.9760-13-kraxel@redhat.com
2018-09-12udmabuf: drop WARN_ON() check.Gerd Hoffmann1-3/+0
Reported-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Link: http://patchwork.freedesktop.org/patch/msgid/20180911134216.9760-12-kraxel@redhat.com
2018-09-12udmabuf: use ENOTTY for invalid ioctlsGerd Hoffmann1-1/+1
Reported-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: http://patchwork.freedesktop.org/patch/msgid/20180911134216.9760-11-kraxel@redhat.com
2018-09-12udmabuf: use EBADFD in case we didn't got a memfdGerd Hoffmann1-2/+5
Reported-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: http://patchwork.freedesktop.org/patch/msgid/20180911134216.9760-10-kraxel@redhat.com
2018-09-12udmabuf: improve udmabuf_create error handlingGerd Hoffmann1-13/+12
Reported-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: http://patchwork.freedesktop.org/patch/msgid/20180911134216.9760-9-kraxel@redhat.com
2018-09-12udmabuf: rework limitsGerd Hoffmann1-2/+8
Create variable for the list length limit. Serves as documentation, also allows to make it a module parameter if needed. Also add a total size limit. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: http://patchwork.freedesktop.org/patch/msgid/20180911134216.9760-8-kraxel@redhat.com
2018-09-12udmabuf: add MEMFD_CREATE dependencyGerd Hoffmann1-0/+1
udmabuf builds without it, but if userspace can not create memfd handles in the first place it is rather pointless to include it, except for test builds. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: http://patchwork.freedesktop.org/patch/msgid/20180911134216.9760-7-kraxel@redhat.com
2018-09-12udmabuf: constify udmabuf_create argsGerd Hoffmann1-2/+2
Reported-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: http://patchwork.freedesktop.org/patch/msgid/20180911134216.9760-6-kraxel@redhat.com
2018-09-12udmabuf: constify udmabuf_opsGerd Hoffmann1-1/+1
Reported-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: http://patchwork.freedesktop.org/patch/msgid/20180911134216.9760-5-kraxel@redhat.com
2018-09-12udmabuf: use pgoff_t for pagecountGerd Hoffmann1-1/+1
Reported-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: http://patchwork.freedesktop.org/patch/msgid/20180911134216.9760-4-kraxel@redhat.com
2018-09-12udmabuf: improve map_udmabuf error handlingGerd Hoffmann1-11/+10
Reported-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: http://patchwork.freedesktop.org/patch/msgid/20180911134216.9760-3-kraxel@redhat.com
2018-09-12udmabuf: sort headers, drop uapi/ path prefixGerd Hoffmann1-9/+8
Reported-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: http://patchwork.freedesktop.org/patch/msgid/20180911134216.9760-2-kraxel@redhat.com
2018-09-05dma-buf/udmabuf: Fix NULL pointer dereference in udmabuf_createGustavo A. R. Silva1-1/+2
There is a potential execution path in which pointer memfd is NULL when passed as argument to fput(), hence there is a NULL pointer dereference in fput(). Fix this by null checking *memfd* before calling fput(). Addresses-Coverity-ID: 1473174 ("Explicit null dereferenced") Fixes: fbb0de795078 ("Add udmabuf misc device") Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com> Link: http://patchwork.freedesktop.org/patch/msgid/20180904190749.GA9308@embeddedor.com Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2018-09-03Add udmabuf misc deviceGerd Hoffmann3-0/+296
A driver to let userspace turn memfd regions into dma-bufs. Use case: Allows qemu create dmabufs for the vga framebuffer or virtio-gpu ressources. Then they can be passed around to display those guest things on the host. To spice client for classic full framebuffer display, and hopefully some day to wayland server for seamless guest window display. qemu test branch: https://git.kraxel.org/cgit/qemu/log/?h=sirius/udmabuf Cc: David Airlie <airlied@linux.ie> Cc: Tomeu Vizoso <tomeu.vizoso@collabora.com> Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Cc: Daniel Vetter <daniel@ffwll.ch> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: http://patchwork.freedesktop.org/patch/msgid/20180827093444.23623-1-kraxel@redhat.com
2018-08-10dma-buf: Remove requirement for ops->map() from dma_buf_exportChris Wilson1-1/+0
Since commit 9ea0dfbf972 ("dma-buf: make map_atomic and map function pointers optional"), the core provides the no-op functions when map and map_atomic are not provided, so we no longer need assert that are supplied by a dma-buf exporter. Fixes: 09ea0dfbf972 ("dma-buf: make map_atomic and map function pointers optional") Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: http://patchwork.freedesktop.org/patch/msgid/20180807183647.22626-1-chris@chris-wilson.co.uk Cc: Daniel Vetter <daniel@ffwll.ch> Cc: Gerd Hoffmann <kraxel@redhat.com> Cc: Sumit Semwal <sumit.semwal@linaro.org> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2018-07-16dma-buf: Move BUG_ON from _add_shared_fence to _add_shared_inplaceMichel Dänzer1-3/+3
Fixes the BUG_ON spuriously triggering under the following circumstances: * reservation_object_reserve_shared is called with shared_count == shared_max - 1, so obj->staged is freed in preparation of an in-place update. * reservation_object_add_shared_fence is called with the first fence, after which shared_count == shared_max. * reservation_object_add_shared_fence is called with a follow-up fence from the same context. In the second reservation_object_add_shared_fence call, the BUG_ON triggers. However, nothing bad would happen in reservation_object_add_shared_inplace, since both fences are from the same context, so they only occupy a single slot. Prevent this by moving the BUG_ON to where an overflow would actually happen (e.g. if a buggy caller didn't call reservation_object_reserve_shared before). v2: * Fix description of breaking scenario (Christian König) * Add bugzilla reference Cc: stable@vger.kernel.org Bugzilla: https://bugs.freedesktop.org/106418 Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> # v1 Reviewed-by: Christian König <christian.koenig@amd.com> # v1 Signed-off-by: Michel Dänzer <michel.daenzer@amd.com> Signed-off-by: Sumit Semwal <sumit.semwal@linaro.org> Link: https://patchwork.freedesktop.org/patch/msgid/20180704151405.10357-1-michel@daenzer.net
2018-07-06Merge tag 'drm-misc-next-2018-07-04' of ↵Dave Airlie3-57/+112
git://anongit.freedesktop.org/drm/drm-misc into drm-next drm-misc-next for 4.19: UAPI Changes: v3d: add fourcc modicfier for fourcc for the Broadcom UIF format (Eric Anholt) Cross-subsystem Changes: console/fbcon: Add support for deferred console takeover (Hans de Goede) Core Changes: dma-fence clean up, improvements and docs (Daniel Vetter) add mask function for crtc, plane, encoder and connector DRM objects(Ville Syrjälä) Driver Changes: pl111: add Nomadik LCDC variant (Linus Walleij) Signed-off-by: Dave Airlie <airlied@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20180704234641.GA3981@juma
2018-07-04dma-fence: Polish kernel-doc for dma-fence.cDaniel Vetter1-44/+103
- Intro section that links to how this is exposed to userspace. - Lots more hyperlinks. - Minor clarifications and style polish v2: Add misplaced hunk of kerneldoc from a different patch. Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Cc: Sumit Semwal <sumit.semwal@linaro.org> Cc: Gustavo Padovan <gustavo@padovan.org> Cc: linux-media@vger.kernel.org Cc: linaro-mm-sig@lists.linaro.org Link: https://patchwork.freedesktop.org/patch/msgid/20180704092909.6599-6-daniel.vetter@ffwll.ch
2018-07-03dma-fence: Make ->wait callback optionalDaniel Vetter3-5/+5
Almost everyone uses dma_fence_default_wait. v2: Also remove the BUG_ON(!ops->wait) (Chris). Reviewed-by: Christian König <christian.koenig@amd.com> (v1) Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Cc: Chris Wilson <chris@chris-wilson.co.uk> Cc: Sumit Semwal <sumit.semwal@linaro.org> Cc: Gustavo Padovan <gustavo@padovan.org> Cc: linux-media@vger.kernel.org Cc: linaro-mm-sig@lists.linaro.org Link: https://patchwork.freedesktop.org/patch/msgid/20180503142603.28513-5-daniel.vetter@ffwll.ch
2018-07-03locking: Implement an algorithm choice for Wound-Wait mutexesThomas Hellstrom1-1/+1
The current Wound-Wait mutex algorithm is actually not Wound-Wait but Wait-Die. Implement also Wound-Wait as a per-ww-class choice. Wound-Wait is, contrary to Wait-Die a preemptive algorithm and is known to generate fewer backoffs. Testing reveals that this is true if the number of simultaneous contending transactions is small. As the number of simultaneous contending threads increases, Wait-Wound becomes inferior to Wait-Die in terms of elapsed time. Possibly due to the larger number of held locks of sleeping transactions. Update documentation and callers. Timings using git://people.freedesktop.org/~thomash/ww_mutex_test tag patch-18-06-15 Each thread runs 100000 batches of lock / unlock 800 ww mutexes randomly chosen out of 100000. Four core Intel x86_64: Algorithm #threads Rollbacks time Wound-Wait 4 ~100 ~17s. Wait-Die 4 ~150000 ~19s. Wound-Wait 16 ~360000 ~109s. Wait-Die 16 ~450000 ~82s. Cc: Ingo Molnar <mingo@redhat.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Gustavo Padovan <gustavo@padovan.org> Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Cc: Sean Paul <seanpaul@chromium.org> Cc: David Airlie <airlied@linux.ie> Cc: Davidlohr Bueso <dave@stgolabs.net> Cc: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> Cc: Josh Triplett <josh@joshtriplett.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Kate Stewart <kstewart@linuxfoundation.org> Cc: Philippe Ombredanne <pombredanne@nexb.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: linux-doc@vger.kernel.org Cc: linux-media@vger.kernel.org Cc: linaro-mm-sig@lists.linaro.org Co-authored-by: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Acked-by: Ingo Molnar <mingo@kernel.org>
2018-07-02dma-fence: Allow wait_any_timeout for all fencesDaniel Vetter1-5/+0
When this was introduced in commit a519435a96597d8cd96123246fea4ae5a6c90b02 Author: Christian König <christian.koenig@amd.com> Date: Tue Oct 20 16:34:16 2015 +0200 dma-buf/fence: add fence_wait_any_timeout function v2 there was a restriction added that this only works if the dma-fence uses the dma_fence_default_wait hook. Which works for amdgpu, which is the only caller. Well, until you share some buffers with e.g. i915, then you get an -EINVAL. But there's really no reason for this, because all drivers must support callbacks. The special ->wait hook is only as an optimization; if the driver needs to create a worker thread for an active callback, then it can avoid to do that if it knows that there's a process context available already. So ->wait is just an optimization, just using the logic in dma_fence_default_wait() should work for all drivers. Let's remove this restriction. Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Daniel Vetter <daniel.vetter@intel.com> Cc: Sumit Semwal <sumit.semwal@linaro.org> Cc: Gustavo Padovan <gustavo@padovan.org> Cc: linux-media@vger.kernel.org Cc: linaro-mm-sig@lists.linaro.org Cc: Christian König <christian.koenig@amd.com> Cc: Alex Deucher <alexander.deucher@amd.com> Link: https://patchwork.freedesktop.org/patch/msgid/20180503142603.28513-4-daniel.vetter@ffwll.ch
2018-07-02dma-fence: Make ->enable_signaling optionalDaniel Vetter1-4/+5
Many drivers have a trivial implementation for ->enable_signaling. Let's make it optional by assuming that signalling is already available when the callback isn't present. v2: Don't do the trick to set the ENABLE_SIGNAL_BIT unconditionally, it results in an expensive spinlock take for everyone. Instead just check if the callback is present. Suggested by Maarten. Also move misplaced kerneldoc hunk to the right patch. Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Reviewed-by: Christian König <christian.koenig@amd.com> (v1) Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Signed-off-by: Daniel Vetter <daniel.vetter@intel.com> Cc: Sumit Semwal <sumit.semwal@linaro.org> Cc: Gustavo Padovan <gustavo@padovan.org> Cc: linux-media@vger.kernel.org Cc: linaro-mm-sig@lists.linaro.org Link: https://patchwork.freedesktop.org/patch/msgid/20180504141034.27727-1-daniel.vetter@ffwll.ch
2018-06-20dma-buf: remove kmap_atomic interfaceChristian König1-52/+2
Neither used nor correctly implemented anywhere. Just completely remove the interface. Signed-off-by: Christian König <christian.koenig@amd.com> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Acked-by: Sumit Semwal <sumit.semwal@linaro.org> Link: https://patchwork.freedesktop.org/patch/226645/
2018-06-20dma_buf: remove device parameter from attach callback v2Christian König1-1/+1
The device parameter is completely unused because it is available in the attachment structure as well. v2: fix kerneldoc as well Signed-off-by: Christian König <christian.koenig@amd.com> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/226643/
2018-06-01dma-buf: make map_atomic and map function pointers optionalGerd Hoffmann1-0/+4
So drivers don't need dummy functions just returning NULL. Cc: Daniel Vetter <daniel@ffwll.ch> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Reviewed-by: Oleksandr Andrushchenko <oleksandr_andrushchenko@epam.com> Link: http://patchwork.freedesktop.org/patch/msgid/20180529135918.19729-1-kraxel@redhat.com
2018-05-07dma-buf: Remove unneeded stubs around sync_debug interfacesEzequiel Garcia1-10/+0
The sync_debug.h header is internal, and only used by sw_sync.c. Therefore, SW_SYNC is always defined and there is no need for the stubs. Remove them and make the code simpler. Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/msgid/20180504180037.10661-1-ezequiel@collabora.com
2018-05-03Revert ↵Daniel Vetter3-16/+9
190c462d5be19ba622a82f5fd0625087c870a1e6..bf3012ada1b2222e770de5c35c1bb16f73b3a01d" I shouldn't have pushed this, CI was right - I failed to remove the BUG_ON(!ops->wait); Reported-by: Chris Wilson <chris@chris-wilson.co.uk> Acked-by: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
2018-05-03dma-fence: Make ->wait callback optionalDaniel Vetter3-3/+4
Almost everyone uses dma_fence_default_wait. Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Cc: Sumit Semwal <sumit.semwal@linaro.org> Cc: Gustavo Padovan <gustavo@padovan.org> Cc: linux-media@vger.kernel.org Cc: linaro-mm-sig@lists.linaro.org Link: https://patchwork.freedesktop.org/patch/msgid/20180427061724.28497-6-daniel.vetter@ffwll.ch
2018-05-03dma-fence: Allow wait_any_timeout for all fencesDaniel Vetter1-5/+0
When this was introduced in commit a519435a96597d8cd96123246fea4ae5a6c90b02 Author: Christian König <christian.koenig@amd.com> Date: Tue Oct 20 16:34:16 2015 +0200 dma-buf/fence: add fence_wait_any_timeout function v2 there was a restriction added that this only works if the dma-fence uses the dma_fence_default_wait hook. Which works for amdgpu, which is the only caller. Well, until you share some buffers with e.g. i915, then you get an -EINVAL. But there's really no reason for this, because all drivers must support callbacks. The special ->wait hook is only as an optimization; if the driver needs to create a worker thread for an active callback, then it can avoid to do that if it knows that there's a process context available already. So ->wait is just an optimization, just using the logic in dma_fence_default_wait() should work for all drivers. Let's remove this restriction. Signed-off-by: Daniel Vetter <daniel.vetter@intel.com> Cc: Sumit Semwal <sumit.semwal@linaro.org> Cc: Gustavo Padovan <gustavo@padovan.org> Cc: linux-media@vger.kernel.org Cc: linaro-mm-sig@lists.linaro.org Cc: Christian König <christian.koenig@amd.com> Cc: Alex Deucher <alexander.deucher@amd.com> Reviewed-by: Christian König <christian.koenig@amd.com> Link: https://patchwork.freedesktop.org/patch/msgid/20180427061724.28497-5-daniel.vetter@ffwll.ch
2018-05-03dma-fence: Make ->enable_signaling optionalDaniel Vetter1-1/+12
Many drivers have a trivial implementation for ->enable_signaling. Let's make it optional by assuming that signalling is already available when the callback isn't present. Signed-off-by: Daniel Vetter <daniel.vetter@intel.com> Cc: Sumit Semwal <sumit.semwal@linaro.org> Cc: Gustavo Padovan <gustavo@padovan.org> Cc: linux-media@vger.kernel.org Cc: linaro-mm-sig@lists.linaro.org Reviewed-by: Christian König <christian.koenig@amd.com> Link: https://patchwork.freedesktop.org/patch/msgid/20180427061724.28497-4-daniel.vetter@ffwll.ch
2018-01-29dma-fence: add comment for WARN_ON in dma_fence_release()Oded Gabbay1-0/+1
In dma_fence_release() there is a WARN_ON which could be triggered by several cases of wrong dma-fence usage. This patch adds a comment to explain two use-cases to help driver developers that use dma-fence and trigger that WARN_ON to better understand the reasons for it. v2: change to a more generic, one-liner comment Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
2018-02-19dma-buf/sw_sync: Fix kerneldoc warningsChris Wilson1-3/+3
drivers/dma-buf/sw_sync.c:248: warning: No description found for parameter 'obj' drivers/dma-buf/sw_sync.c:248: warning: No description found for parameter 'value' drivers/dma-buf/sw_sync.c:248: warning: Excess function parameter 'parent' description in 'sync_pt_create' drivers/dma-buf/sw_sync.c:248: warning: Excess function parameter 'inc' description in 'sync_pt_create' Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/msgid/20180208113816.8288-1-chris@chris-wilson.co.uk
2018-02-16Merge tag 'drm-misc-next-2018-02-13' of ↵Dave Airlie2-11/+24
git://anongit.freedesktop.org/drm/drm-misc into drm-next drm-misc-next for 4.17: UAPI Changes: - drm/vc4: Expose performance counters to userspace (Boris) Cross-subsystem Changes: - MAINTAINERS: Linus to maintain panel-arm-versatile in -misc (Linus) Core Changes: - Only use swiotlb when necessary (Chunming) Driver Changes: - drm/panel: Add support for ARM Versatile panels (Linus) - pl111: Improvements around versatile panel support (Linus) ---------------------------------------- Tagged on 2018-02-06: drm-misc-next for 4.17: UAPI Changes: - Validate mode flags + type (Ville) - Deprecate unused mode flags PIXMUX, BCAST (Ville) - Deprecate unused mode types BUILTIN, CRTC_C, CLOCK_C, DEFAULT (Ville) Cross-subsystem Changes: - MAINTAINERS: s/Daniel/Maarten/ for drm-misc (Daniel) Core Changes: - gem: Export gem functions for drivers to use (Samuel) - bridge: Introduce bridge timings in drm_bridge (Linus) - dma-buf: Allow exclusive fence to be bundled in fence array when calling reservation_object_get_fences_rcu (Christian) - dp: Add training pattern 4 and HBR3 support to dp helpers (Manasi) - fourcc: Add alpha bit to formats to avoid driver format LUTs (Maxime) - mode: Various cleanups + add new device-wide .mode_valid hook (Ville) - atomic: Fix state leak when non-blocking commits fail (Leo) NOTE: IIRC, this was cross-picked to -fixes so it might fall out - crc: Allow polling on the data fd (Maarten) Driver Changes: - bridge/vga-dac: Add THS8134* support (Linus) - tinydrm: Various MIPI DBI improvements/cleanups (Noralf) - bridge/dw-mipi-dsi: Cleanups + use create_packet helper (Brian) - drm/sun4i: Add Display Engine frontend support (Maxime) - drm/sun4i: Add zpos support + increase num planes from 2 to 4 (Maxime) - various: Use drm_mode_get_hv_timing() to fill plane clip rectangle (Ville) - stm: Add 8-bit clut support, add dsi phy v1.31 support, +fixes (Phillipe) Cc: Boris Brezillon <boris.brezillon@free-electrons.com> Cc: Chunming Zhou <david1.zhou@amd.com> Cc: Samuel Li <Samuel.Li@amd.com> Cc: Linus Walleij <linus.walleij@linaro.org> Cc: Noralf Trønnes <noralf@tronnes.org> Cc: Brian Norris <briannorris@chromium.org> Cc: Maxime Ripard <maxime.ripard@free-electrons.com> Cc: Ville Syrjala <ville.syrjala@linux.intel.com> Cc: Christian König <christian.koenig@amd.com> Cc: Manasi Navare <manasi.d.navare@intel.com> Cc: Philippe Cornu <philippe.cornu@st.com> Cc: Leo (Sunpeng) Li <sunpeng.li@amd.com> Cc: Daniel Vetter <daniel.vetter@ffwll.ch> Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> * tag 'drm-misc-next-2018-02-13' of git://anongit.freedesktop.org/drm/drm-misc: (115 commits) drm/radeon: only enable swiotlb path when need v2 drm/amdgpu: only enable swiotlb alloc when need v2 drm: add func to get max iomem address v2 drm/vc4: Expose performance counters to userspace drm: Print the pid when debug logging an ioctl error. drm/stm: ltdc: remove non-alpha color formats on layer 2 for older hw drm/stm: ltdc: add non-alpha color formats drm/bridge/synopsys: dsi: Add 1.31 version support drm/bridge/synopsys: dsi: Add read feature drm/pl111: Support multiple endpoints on the CLCD drm/pl111: Support variants with broken VBLANK drm/pl111: Support variants with broken clock divider drm/pl111: Handle the Versatile RGB/BGR565 mode drm/pl111: Properly detect the ARM PL110 variants drm/panel: Add support for ARM Versatile panels drm/panel: Device tree bindings for ARM Versatile panels drm/bridge: Rename argument from crtc to bridge drm/crc: Add support for polling on the data fd. drm/sun4i: Use drm_mode_get_hv_timing() to populate plane clip rectangle drm/rcar-du: Use drm_mode_get_hv_timing() to populate plane clip rectangle ...
2018-02-11vfs: do bulk POLL* -> EPOLL* replacementLinus Torvalds2-14/+14
This is the mindless scripted replacement of kernel use of POLL* variables as described by Al, done by this script: for V in IN OUT PRI ERR RDNORM RDBAND WRNORM WRBAND HUP RDHUP NVAL MSG; do L=`git grep -l -w POLL$V | grep -v '^t' | grep -v /um/ | grep -v '^sa' | grep -v '/poll.h$'|grep -v '^D'` for f in $L; do sed -i "-es/^\([^\"]*\)\(\<POLL$V\>\)/\\1E\\2/" $f; done done with de-mangling cleanups yet to come. NOTE! On almost all architectures, the EPOLL* constants have the same values as the POLL* constants do. But they keyword here is "almost". For various bad reasons they aren't the same, and epoll() doesn't actually work quite correctly in some cases due to this on Sparc et al. The next patch from Al will sort out the final differences, and we should be all done. Scripted-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-02-01Merge tag 'drm-for-v4.16' of git://people.freedesktop.org/~airlied/linuxLinus Torvalds3-31/+58
Pull drm updates from Dave Airlie: "This seems to have been a comparatively quieter merge window, I assume due to holidays etc. The "biggest" change is AMD header cleanups, which merge/remove a bunch of them. The AMD gpu scheduler is now being made generic with the etnaviv driver wanting to reuse the code, hopefully other drivers can go in the same direction. Otherwise it's the usual lots of stuff in i915/amdgpu, not so much stuff elsewhere. Core: - Add .last_close and .output_poll_changed helpers to reduce driver footprints - Fix plane clipping - Improved debug printing support - Add panel orientation property - Update edid derived properties at edid setting - Reduction in fbdev driver footprint - Move amdgpu scheduler into core for other drivers to use. i915: - Selftest and IGT improvements - Fast boot prep work on IPS, pipe config - HW workarounds for Cannonlake, Geminilake - Cannonlake clock and HDMI2.0 fixes - GPU cache invalidation and context switch improvements - Display planes cleanup - New PMU interface for perf queries - New firmware support for KBL/SKL - Geminilake HW workaround for perforamce - Coffeelake stolen memory improvements - GPU reset robustness work - Cannonlake horizontal plane flipping - GVT work amdgpu/radeon: - RV and Vega header file cleanups (lots of lines gone!) - TTM operation context support - 48-bit GPUVM support for Vega/RV - ECC support for Vega - Resizeable BAR support - Multi-display sync support - Enable swapout for reserved BOs during allocation - S3 fixes on Raven - GPU reset cleanup and fixes - 2+1 level GPU page table amdkfd: - GFX7/8 SDMA user queues support - Hardware scheduling for multiple processes - dGPU prep work rcar: - Added R8A7743/5 support - System suspend/resume support sun4i: - Multi-plane support for YUV formats - A83T and LVDS support msm: - Devfreq support for GPU tegra: - Prep work for adding Tegra186 support - Tegra186 HDMI support - HDMI2.0 and zpos support by using generic helpers tilcdc: - Misc fixes omapdrm: - Support memory bandwidth limits - DSI command mode panel cleanups - DMM error handling exynos: - drop the old IPP subdriver. etnaviv: - Occlusion query fixes - Job handling fixes - Prep work for hooking in gpu scheduler armada: - Move closer to atomic modesetting - Allow disabling primary plane if overlay is full screen imx: - Format modifier support - Add tile prefetch to PRE - Runtime PM support for PRG ast: - fix LUT loading" * tag 'drm-for-v4.16' of git://people.freedesktop.org/~airlied/linux: (1471 commits) drm/ast: Load lut in crtc_commit drm: Check for lessee in DROP_MASTER ioctl drm: fix gpu scheduler link order drm/amd/display: Demote error print to debug print when ATOM impl missing dma-buf: fix reservation_object_wait_timeout_rcu once more v2 drm/amdgpu: Avoid leaking PM domain on driver unbind (v2) drm/amd/amdgpu: Add Polaris version check drm/amdgpu: Reenable manual GPU reset from sysfs drm/amdgpu: disable MMHUB power gating on raven drm/ttm: Don't unreserve swapped BOs that were previously reserved drm/ttm: Don't add swapped BOs to swap-LRU list drm/amdgpu: only check for ECC on Vega10 drm/amd/powerplay: Fix smu_table_entry.handle type drm/ttm: add VADDR_FLAG_UPDATED_COUNT to correctly update dma_page global count drm: Fix PANEL_ORIENTATION_QUIRKS breaking the Kconfig DRM menuconfig drm/radeon: fill in rb backend map on evergreen/ni. drm/amdgpu/gfx9: fix ngg enablement to clear gds reserved memory (v2) drm/ttm: only free pages rather than update global memory count together drm/amdgpu: fix CPU based VM updates drm/amdgpu: fix typo in amdgpu_vce_validate_bo ...
2018-01-30dma-buf/sw_sync: fix document of sw_sync_create_fence_dataShawn Guo1-2/+2
The structure should really be sw_sync_create_fence_data rather than sw_sync_ioctl_create_fence which is the function name. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/msgid/1515988079-8677-1-git-send-email-shawn.guo@linaro.org
2018-01-23dma-buf: make returning the exclusive fence optionalChristian König1-9/+22
Change reservation_object_get_fences_rcu to make the exclusive fence pointer optional. If not specified the exclusive fence is put into the fence array as well. This is helpful for a couple of cases where we need all fences in a single array. Reviewed-by: Chunming Zhou <david1.zhou@amd.com> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Link: https://patchwork.freedesktop.org/patch/msgid/20180110125341.3618-1-christian.koenig@amd.com
2018-01-23dma-buf: fix reservation_object_wait_timeout_rcu once more v2Christian König1-3/+5
We need to set shared_count even if we already have a fence to wait for. v2: init i to -1 as well Signed-off-by: Christian König <christian.koenig@amd.com> Cc: stable@vger.kernel.org Tested-by: Lyude Paul <lyude@redhat.com> Reviewed-by: Lyude Paul <lyude@redhat.com> Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Link: https://patchwork.freedesktop.org/patch/msgid/20180122200003.6665-1-christian.koenig@amd.com
2017-12-04Merge tag 'drm-misc-next-2017-11-30' of ↵Dave Airlie3-28/+53
git://anongit.freedesktop.org/drm/drm-misc into drm-next Cross-subsystem Changes: - device tree doc for the Mitsubishi AA070MC01 and Tianma TM070RVHG71 panels (Lukasz Majewski) and for a 2nd endpoint on stm32 (Philippe Cornu) Core Changes: The most important changes are: - Add drm_driver .last_close and .output_poll_changed helpers to reduce fbdev emulation footprint in drivers (Noralf) - Fix plane clipping in core and for vmwgfx (Ville) Then we have a bunch of of improvement for print and debug such as the addition of a framebuffer debugfs file. ELD connector, HDMI and improvements. And a bunch of misc improvements, clean ups and style changes and doc updates [airlied: drop eld bits from amdgpu_dm] Driver Changes: - sii8620: filter unsupported modes and add DVI mode support (Maciej Purski) - rockchip: analogix_dp: Remove unnecessary init code (Jeffy Chen) - virtio, cirrus: add fb create_handle support to enable screenshots(Lepton Wu) - virtio: replace reference/unreference with get/put (Aastha Gupta) - vc4, gma500: Convert timers to use timer_setup() (Kees Cook) - vc4: Reject HDMI modes with too high of clocks (Eric) - vc4: Add support for more pixel formats (Dave Stevenson) - stm: dsi: Rename driver name to "stm32-display-dsi" (Philippe Cornu) - stm: ltdc: add a 2nd endpoint (Philippe Cornu) - via: use monotonic time for VIA_WAIT_IRQ (Arnd Bergmann) * tag 'drm-misc-next-2017-11-30' of git://anongit.freedesktop.org/drm/drm-misc: (96 commits) drm/bridge: tc358767: add copyright lines MAINTAINERS: change maintainer for Rockchip drm drivers drm/vblank: Fix vblank timestamp debugs drm/via: use monotonic time for VIA_WAIT_IRQ dma-buf: Fix ifnullfree.cocci warnings drm/printer: Add drm_vprintf() drm/edid: Allow HDMI infoframe without VIC or S3D video/hdmi: Allow "empty" HDMI infoframes dma-buf/fence: Fix lock inversion within dma-fence-array drm/sti: Handle return value of platform_get_irq_byname drm/vc4: Add support for NV21 and NV61. drm/vc4: Use .pixel_order instead of custom .flip_cbcr drm/vc4: Add support for DRM_FORMAT_RGB888 and DRM_FORMAT_BGR888 drm: Move drm_plane_helper_check_state() into drm_atomic_helper.c drm: Check crtc_state->enable rather than crtc->enabled in drm_plane_helper_check_state() drm/vmwgfx: Try to fix plane clipping drm/vmwgfx: Use drm_plane_helper_check_state() drm/vmwgfx: Remove bogus crtc coords vs fb size check gpu: gma500: remove unneeded DRIVER_LICENSE #define drm: don't link DP aux i2c adapter to the hardware device node ...
2017-11-28the rest of drivers/*: annotate ->poll() instancesAl Viro2-3/+3
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2017-11-27annotate poll_table_struct ->_keyAl Viro1-1/+1
Only POLL... bitmaps ever end up there and their only use is checking for POLL... bits in them. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2017-11-23dma-buf: Fix ifnullfree.cocci warningsVasyl Gomonovych1-2/+1
NULL check before some freeing functions is not needed. drivers/dma-buf/dma-buf.c:1183:2-26: WARNING: NULL check before freeing debugfs_remove_recursive Generated by: scripts/coccinelle/free/ifnullfree.cocci Signed-off-by: Vasyl Gomonovych <gomonovych@gmail.com> Signed-off-by: Sumit Semwal <sumit.semwal@linaro.org> Link: https://patchwork.freedesktop.org/patch/msgid/1511364161-6074-1-git-send-email-gomonovych@gmail.com
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-08 16:04:05 +0000