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path: root/drivers/gpu/drm/radeon/radeon_cs.c (follow)
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2017-04-07drm/radeon: Refuse to migrate a prime BO to VRAM. (v2)Christopher James Halse Rogers1-0/+10
BOs shared via dma-buf, either imported or exported, cannot sensibly be migrated to VRAM without breaking the dma-buf sharing. Refuse userspace requests to migrate to VRAM, ensure such BOs are not migrated during command submission, and refuse to pin them to VRAM. v2: Don't pin BOs in GTT. Instead, refuse to migrate BOs to VRAM. Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Christopher James Halse Rogers <christopher.halse.rogers@canonical.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-01-26drm: remove device_is_agp callbackDaniel Vetter1-1/+2
With that the drm_pci_device_is_agp function becomes trivial, so inline that too. And while at it, move the drm_pci_agp_destroy declaration into drm-internal.h, since it's not used by drivers. Cc: Alex Deucher <alexander.deucher@amd.com> Cc: Ben Skeggs <bskeggs@redhat.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Daniel Vetter <daniel.vetter@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/20170125062657.19270-11-daniel.vetter@ffwll.ch
2016-05-18drm: remove unused dev variablesArnd Bergmann1-1/+0
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 Wilson1-1/+1
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>
2015-04-27drm/radeon: Use drm_calloc_ab for CS relocsMichel Dänzer1-2/+2
The number of relocs is passed in by userspace and can be large. It has been observed to cause kcalloc failures in the wild. Cc: stable@vger.kernel.org Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Michel Dänzer <michel.daenzer@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2015-03-03drm/radeon: fix DRM_IOCTL_RADEON_CS oopsTommi Rantala1-1/+3
Passing zeroed drm_radeon_cs struct to DRM_IOCTL_RADEON_CS produces the following oops. Fix by always calling INIT_LIST_HEAD() to avoid the crash in list_sort(). ---------------------------------- #include <stdint.h> #include <fcntl.h> #include <unistd.h> #include <sys/ioctl.h> #include <drm/radeon_drm.h> static const struct drm_radeon_cs cs; int main(int argc, char **argv) { return ioctl(open(argv[1], O_RDWR), DRM_IOCTL_RADEON_CS, &cs); } ---------------------------------- [ttrantal@test2 ~]$ ./main /dev/dri/card0 [ 46.904650] BUG: unable to handle kernel NULL pointer dereference at (null) [ 46.905022] IP: [<ffffffff814d6df2>] list_sort+0x42/0x240 [ 46.905022] PGD 68f29067 PUD 688b5067 PMD 0 [ 46.905022] Oops: 0002 [#1] SMP [ 46.905022] CPU: 0 PID: 2413 Comm: main Not tainted 4.0.0-rc1+ #58 [ 46.905022] Hardware name: Hewlett-Packard HP Compaq dc5750 Small Form Factor/0A64h, BIOS 786E3 v02.10 01/25/2007 [ 46.905022] task: ffff880058e2bcc0 ti: ffff880058e64000 task.ti: ffff880058e64000 [ 46.905022] RIP: 0010:[<ffffffff814d6df2>] [<ffffffff814d6df2>] list_sort+0x42/0x240 [ 46.905022] RSP: 0018:ffff880058e67998 EFLAGS: 00010246 [ 46.905022] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 46.905022] RDX: ffffffff81644410 RSI: ffff880058e67b40 RDI: ffff880058e67a58 [ 46.905022] RBP: ffff880058e67a88 R08: 0000000000000000 R09: 0000000000000000 [ 46.905022] R10: ffff880058e2bcc0 R11: ffffffff828e6ca0 R12: ffffffff81644410 [ 46.905022] R13: ffff8800694b8018 R14: 0000000000000000 R15: ffff880058e679b0 [ 46.905022] FS: 00007fdc65a65700(0000) GS:ffff88006d600000(0000) knlGS:0000000000000000 [ 46.905022] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 46.905022] CR2: 0000000000000000 CR3: 0000000058dd9000 CR4: 00000000000006f0 [ 46.905022] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 46.905022] DR3: 0000000000000000 DR6: 00000000ffff4ff0 DR7: 0000000000000400 [ 46.905022] Stack: [ 46.905022] ffff880058e67b40 ffff880058e2bcc0 ffff880058e67a78 0000000000000000 [ 46.905022] 0000000000000000 0000000000000000 0000000000000000 0000000000000000 [ 46.905022] 0000000000000000 0000000000000000 0000000000000000 0000000000000000 [ 46.905022] Call Trace: [ 46.905022] [<ffffffff81644a65>] radeon_cs_parser_fini+0x195/0x220 [ 46.905022] [<ffffffff81645069>] radeon_cs_ioctl+0xa9/0x960 [ 46.905022] [<ffffffff815e1f7c>] drm_ioctl+0x19c/0x640 [ 46.905022] [<ffffffff810f8fdd>] ? trace_hardirqs_on_caller+0xfd/0x1c0 [ 46.905022] [<ffffffff810f90ad>] ? trace_hardirqs_on+0xd/0x10 [ 46.905022] [<ffffffff8160c066>] radeon_drm_ioctl+0x46/0x80 [ 46.905022] [<ffffffff81211868>] do_vfs_ioctl+0x318/0x570 [ 46.905022] [<ffffffff81462ef6>] ? selinux_file_ioctl+0x56/0x110 [ 46.905022] [<ffffffff81211b41>] SyS_ioctl+0x81/0xa0 [ 46.905022] [<ffffffff81dc6312>] system_call_fastpath+0x12/0x17 [ 46.905022] Code: 48 89 b5 10 ff ff ff 0f 84 03 01 00 00 4c 8d bd 28 ff ff ff 31 c0 48 89 fb b9 15 00 00 00 49 89 d4 4c 89 ff f3 48 ab 48 8b 46 08 <48> c7 00 00 00 00 00 48 8b 0e 48 85 c9 0f 84 7d 00 00 00 c7 85 [ 46.905022] RIP [<ffffffff814d6df2>] list_sort+0x42/0x240 [ 46.905022] RSP <ffff880058e67998> [ 46.905022] CR2: 0000000000000000 [ 47.149253] ---[ end trace 09576b4e8b2c20b8 ]--- Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Tommi Rantala <tt.rantala@gmail.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Cc: stable@vger.kernel.org
2015-02-25drm/radeon: dump full IB if we hit a packet errorAlex Deucher1-2/+14
Dump the whole IB if we run into an invalid packet. This makes things much easier to debug. bug: https://bugs.freedesktop.org/show_bug.cgi?id=89148 Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2014-12-08Merge tag 'v3.18' into drm-nextDave Airlie1-1/+0
Linux 3.18 Backmerge Linus tree into -next as we had conflicts in i915/radeon/nouveau, and everyone was solving them individually. * tag 'v3.18': (57 commits) Linux 3.18 watchdog: s3c2410_wdt: Fix the mask bit offset for Exynos7 uapi: fix to export linux/vm_sockets.h i2c: cadence: Set the hardware time-out register to maximum value i2c: davinci: generate STP always when NACK is received ahci: disable MSI on SAMSUNG 0xa800 SSD context_tracking: Restore previous state in schedule_user slab: fix nodeid bounds check for non-contiguous node IDs lib/genalloc.c: export devm_gen_pool_create() for modules mm: fix anon_vma_clone() error treatment mm: fix swapoff hang after page migration and fork fat: fix oops on corrupted vfat fs ipc/sem.c: fully initialize sem_array before making it visible drivers/input/evdev.c: don't kfree() a vmalloc address cxgb4: Fill in supported link mode for SFP modules xen-netfront: Remove BUGs on paged skb data which crosses a page boundary mm/vmpressure.c: fix race in vmpressure_work_fn() mm: frontswap: invalidate expired data on a dup-store failure mm: do not overwrite reserved pages counter at show_mem() drm/radeon: kernel panic in drm_calc_vbltimestamp_from_scanoutpos with 3.18.0-rc6 ... Conflicts: drivers/gpu/drm/i915/intel_display.c drivers/gpu/drm/nouveau/nouveau_drm.c drivers/gpu/drm/radeon/radeon_cs.c
2014-12-03drm/radeon: use pointers instead of indexes for CS chunksChristian König1-29/+28
Nobody is interested at which index the chunk is. What's needed is a pointer to the chunk. Remove unused chunk_id field as well. Signed-off-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2014-12-03drm/radeon: remove duplicates checkChristian König1-27/+3
Completely unnecessary since the ww_mutex used to reserve a buffer can detect double reservations from the same thread anyway. Signed-off-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2014-12-03drm/radeon: rename radeon_cs_reloc to radeon_bo_listChristian König1-5/+5
Better match what it is actually doing. Signed-off-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2014-12-03drm/radeon: drop the handle from radeon_cs_relocChristian König1-3/+3
It's only used for duplicate check and that can be done on the original as well. Signed-off-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2014-12-03drm/radeon drop gobj from radeon_cs_relocChristian König1-6/+9
It's only used once after initializing and that ptr can be calculated from the BO as well. Signed-off-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2014-12-03drm/radeon: sync all BOs involved in a CSChristian König1-12/+7
Not just the userspace relocs, otherwise we won't wait for a swapped out page tables to be swapped in again. Signed-off-by: Christian König <christian.koenig@amd.com> Cc: stable@vger.kernel.org Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2014-12-02drm/radeon: sync all BOs involved in a CS v2Christian König1-10/+7
Not just the userspace relocs, otherwise we won't wait for a swapped out page tables to be swapped in again. v2: rebased on Alex current drm-fixes-3.18 Signed-off-by: Christian König <christian.koenig@amd.com> Cc: stable@vger.kernel.org Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2014-11-20drm/radeon: fence BO_VAs manuallyChristian König1-1/+5
This allows us to finally remove the VM fence and so allow concurrent use of it from different engines. Signed-off-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2014-11-20drm/radeon: split semaphore and sync object handling v2Christian König1-5/+3
Previously we just allocated space for four hardware semaphores in each software semaphore object. Make software semaphore objects represent only one hardware semaphore address again by splitting the sync code into it's own object. v2: fix typo in comment Signed-off-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2014-10-28drm/radeon: Use drm_malloc_ab instead of kmalloc_arrayMichel Dänzer1-1/+1
Should avoid kmalloc failures due to large number of array entries. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=81991 Reviewed-by: Dave Airlie <airlied@redhat.com> Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Michel Dänzer <michel.daenzer@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Cc: stable@vger.kernel.org
2014-10-03drm/radeon: cope with foreign fences inside the reservation objectMaarten Lankhorst1-6/+22
Not the whole world is a radeon! :-) Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2014-09-11drm/radeon: allow concurrent buffer readsChristian König1-2/+3
Signed-off-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2014-09-11drm/radeon: add the infrastructure for concurrent buffer accessChristian König1-6/+2
This allows us to specify if we want to sync to the shared fences of a reservation object or not. Signed-off-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2014-09-11drm/ttm: allow fence to be added as sharedChristian König1-0/+1
This patch adds a new flag to the ttm_validate_buffer list to add the fence as shared to the reservation object. Signed-off-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2014-09-02drm/ttm: flip the switch, and convert to dma_fenceMaarten Lankhorst1-2/+8
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>
2014-08-27drm/radeon: take exclusive_lock in read mode during ring tests, v5Maarten Lankhorst1-0/+7
This is needed for the next commit, because the lockup detection will need the read lock to run. v4 (chk): split out forced fence completion, remove unrelated changes, add and handle in_reset flag v5 (agd5f): rebase fix Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com> Signed-off-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2014-08-27drm/radeon: force UVD buffers into VRAM on RS[78]80 v2Christian König1-3/+6
v2: only necessary on RS[78]80 Signed-off-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2014-08-26Merge branch 'drm-next-3.18' of git://people.freedesktop.org/~agd5f/linux into drm-nextDave Airlie1-2/+23
radeon userptr support. * 'drm-next-3.18' of git://people.freedesktop.org/~agd5f/linux: drm/radeon: allow userptr write access under certain conditions drm/radeon: add userptr flag to register MMU notifier v3 drm/radeon: add userptr flag to directly validate the BO to GTT drm/radeon: add userptr flag to limit it to anonymous memory v2 drm/radeon: add userptr support v8 Conflicts: drivers/gpu/drm/radeon/radeon_prime.c
2014-08-18drm/radeon: Only flush HDP cache for indirect buffers from userspaceMichel Dänzer1-3/+3
It isn't necessary for command streams generated by the kernel (at least not while we aren't storing ring or indirect buffers in VRAM). Signed-off-by: Michel Dänzer <michel.daenzer@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2014-08-18drm/radeon: properly document reloc priority maskChristian König1-1/+2
Instead of hard coding the value properly document that this is an userspace interface. No intended functional change. Signed-off-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Cc: stable@vger.kernel.org
2014-08-11drm/radeon: add userptr support v8Christian König1-2/+23
This patch adds an IOCTL for turning a pointer supplied by userspace into a buffer object. It imposes several restrictions upon the memory being mapped: 1. It must be page aligned (both start/end addresses, i.e ptr and size). 2. It must be normal system memory, not a pointer into another map of IO space (e.g. it must not be a GTT mmapping of another object). 3. The BO is mapped into GTT, so the maximum amount of memory mapped at all times is still the GTT limit. 4. The BO is only mapped readonly for now, so no write support. 5. List of backing pages is only acquired once, so they represent a snapshot of the first use. Exporting and sharing as well as mapping of buffer objects created by this function is forbidden and results in an -EPERM. v2: squash all previous changes into first public version v3: fix tabs, map readonly, don't use MM callback any more v4: set TTM_PAGE_FLAG_SG so that TTM never messes with the pages, pin/unpin pages on bind/unbind instead of populate/unpopulate v5: rebased on 3.17-wip, IOCTL renamed to userptr, reject any unknown flags, better handle READONLY flag, improve permission check v6: fix ptr cast warning, use set_page_dirty/mark_page_accessed on unpin v7: add warning about it's availability in the API definition v8: drop access_ok check, fix VM mapping bits Signed-off-by: Christian König <christian.koenig@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> (v4) Reviewed-by: Jérôme Glisse <jglisse@redhat.com> (v4) Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2014-08-05drm/radeon: invalidate moved BOs in the VM (v2)Christian König1-1/+2
Don't wait for the BO to be used again, just update the PT on the next VM use. v2: remove stray semicolon. Signed-off-by: Christian König <christian.koenig@amd.com> Tested-by: Michel Dänzer <michel.daenzer@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2014-07-21drm/radeon: fix VM IB handlingChristian König1-3/+3
Calling radeon_vm_bo_find on the IB BO during CS is illegal and can lead to an crash. Signed-off-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2014-07-21drm/radeon: fix handling of radeon_vm_bo_rmv v3Christian König1-3/+19
v3: completely rewritten. We now just remember which areas of the PT to clear and do so on the next command submission. Bug: https://bugs.freedesktop.org/show_bug.cgi?id=79980 Signed-off-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2014-06-09drm/radeon: rename alt_domain to allowed_domainsChristian König1-4/+4
And also domain to prefered_domains. That matches better what those values represent. Signed-off-by: Christian König <christian.koenig@amd.com> Cc: Marek Olšák <maraeo@gmail.com> Reviewed-by: Marek Olšák <marek.olsak@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2014-05-30drm/radeon: don't allow RADEON_GEM_DOMAIN_CPU for command submissionMarek Olšák1-0/+6
It hangs the hardware. Signed-off-by: Marek Olšák <marek.olsak@amd.com> Reviewed-by: Christian König <christian.koenig@amd.com> Cc: stable@vger.kernel.org
2014-05-30drm/radeon: avoid crash if VM command submission isn't availableChristian König1-4/+11
Signed-off-by: Christian König <christian.koenig@amd.com> CC: stable@vger.kernel.org
2014-03-04drm/radeon: remove struct radeon_bo_listChristian König1-12/+11
Just move all fields into radeon_cs_reloc, removing unused/duplicated fields. Signed-off-by: Christian König <christian.koenig@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
2014-03-03drm/radeon: remove global vm lockChristian König1-4/+0
Not needed any more. Signed-off-by: Christian König <christian.koenig@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
2014-03-03drm/radeon: use normal BOs for the page tables v4Christian König1-18/+26
No need to make it more complicated than necessary, just allocate the page tables as normal BO and flush whenever the address change. v2: update comments and function name v3: squash bug fixes, page directory and tables patch v4: rebased on Mareks changes Signed-off-by: Christian König <christian.koenig@amd.com>
2014-03-03drm/radeon: further cleanup vm flushing & fencingChristian König1-4/+0
Signed-off-by: Christian König <christian.koenig@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
2014-03-03drm/radeon: limit how much memory TTM can move per IB according to VRAM usageMarek Olšák1-1/+1
Signed-off-by: Marek Olšák <marek.olsak@amd.com> Reviewed-by: Christian König <christian.koenig@amd.com>
2014-03-03drm/radeon: validate relocations in the order determined by userspace v3Marek Olšák1-3/+61
Userspace should set the first 4 bits of drm_radeon_cs_reloc::flags to a number from 0 to 15. The higher the number, the higher the priority, which means a buffer with a higher number will be validated sooner. The old behavior is preserved: Buffers used for write are prioritized over read-only buffers if the userspace doesn't set the number. v2: add buffers to buckets directly, then concatenate them v3: use a stable sort Signed-off-by: Marek Olšák <marek.olsak@amd.com> Reviewed-by: Christian König <christian.koenig@amd.com>
2014-03-03drm/radeon: add buffers to the LRU list from smallest to largestMarek Olšák1-0/+23
Signed-off-by: Marek Olšák <marek.olsak@amd.com> Reviewed-by: Christian König <christian.koenig@amd.com>
2014-02-18drm/radeon/dpm: enable dynamic vce state switching v2Alex Deucher1-0/+3
enable vce states when vce is active. When vce is active, it adjusts the currently selected state (performance, battery, uvd, etc.) v2: add code comments Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Christian König <christian.koenig@amd.com>
2014-02-18drm/radeon: initial VCE support v4Christian König1-0/+4
Only VCE 2.0 support so far. v2: squashing multiple patches into this one v3: add IRQ support for CIK, major cleanups, basic code documentation v4: remove HAINAN from chipset list Signed-off-by: Christian König <christian.koenig@amd.com>
2014-01-29drm/radeon: skip async dma init on r6xxAlex Deucher1-1/+1
The hw is buggy and it's not currently used, but it's currently still initialized by the driver. Skip the init. Skipping init also seems to improve stability with dpm on some r6xx asics. bug: https://bugs.freedesktop.org/show_bug.cgi?id=66963 Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Reviewed-by: Christian König <christian.koenig@amd.com>
2013-12-18drm: Kill DRM_COPY_(TO|FROM)_USERDaniel Vetter1-5/+5
Less yelling ftw! Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Dave Airlie <airlied@redhat.com>
2013-12-02drm/radeon: add radeon_vm_bo_update trace pointChristian König1-2/+2
Also rename the function to better reflect what it is doing. agd5f: fix argument size warning Signed-off-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2013-11-15drm/radeon: allow semaphore emission to failChristian König1-4/+5
To workaround bugs and/or certain limits it's sometimes useful to fall back to waiting on fences. Signed-off-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Cc: stable@vger.kernel.org
2013-11-08Merge tag 'drm-intel-fixes-2013-11-07' of git://people.freedesktop.org/~danvet/drm-intel into drm-nextDave Airlie1-2/+1
Bit a bit -fixes pull request in the merge window than usual dua to two feauture-y things: - Display CRCs are now enabled on all platforms, including the odd DP case on gm45/vlv. Since this is a testing-only feature it should ever hurt, but I figured it'll help with regression-testing -fixes. So I left it in and didn't postpone it to 3.14. - Display power well refactoring from Imre. Would have caused major pain conflict with the bdw stage 1 patches if I'd postpone this to -next. It's only an relatively small interface rework, so shouldn't cause pain. It's also been in my tree since almost 3 weeks already. That accounts for about two thirds of the pull, otherwise just bugfixes: - vlv backlight fix from Jesse/Jani - vlv vblank timestamp fix from Jesse - improved edp detection through vbt from Ville (fixes a vlv issue) - eDP vdd fix from Paulo - fixes for dvo lvds on i830M - a few smaller things all over Note: This contains a backmerge of v3.12. Since the -internal branch always applied on top of -nightly I need that unified base to merge bdw patches. So you'll get a conflict with radeon connector props when pulling this (and nouveau/master will also conflict a bit when Ben doesn't rebase). The backmerge itself only had conflicts in drm/i915. There's also a tiny conflict between Jani's backlight fix and your sysfs lifetime fix in drm-next. * tag 'drm-intel-fixes-2013-11-07' of git://people.freedesktop.org/~danvet/drm-intel: (940 commits) drm/i915/vlv: use per-pipe backlight controls v2 drm/i915: make backlight functions take a connector drm/i915: move opregion asle request handling to a work queue drm/i915/vlv: use PIPE_START_VBLANK interrupts on VLV drm/i915: Make intel_dp_is_edp() less specific drm/i915: Give names to the VBT child device type bits drm/i915/vlv: enable HDA display audio for Valleyview2 drm/i915/dvo: call ->mode_set callback only when the port is running drm/i915: avoid unclaimed registers when capturing the error state drm/i915: Enable DP port CRC for the "auto" source on g4x/vlv drm/i915: scramble reset support for DP port CRC on vlv drm/i915: scramble reset support for DP port CRC on g4x drm/i916: add "auto" pipe CRC source ... Conflicts: MAINTAINERS drivers/gpu/drm/i915/intel_panel.c drivers/gpu/drm/nouveau/core/subdev/mc/base.c drivers/gpu/drm/radeon/atombios_encoders.c drivers/gpu/drm/radeon/radeon_connectors.c
2013-11-01drm/radeon: fixup locking inversion between, mmap_sem and reservationsMaarten Lankhorst1-206/+92
op 08-10-13 18:58, Thomas Hellstrom schreef: > On 10/08/2013 06:47 PM, Jerome Glisse wrote: >> On Tue, Oct 08, 2013 at 06:29:35PM +0200, Thomas Hellstrom wrote: >>> On 10/08/2013 04:55 PM, Jerome Glisse wrote: >>>> On Tue, Oct 08, 2013 at 04:45:18PM +0200, Christian König wrote: >>>>> Am 08.10.2013 16:33, schrieb Jerome Glisse: >>>>>> On Tue, Oct 08, 2013 at 04:14:40PM +0200, Maarten Lankhorst wrote: >>>>>>> Allocate and copy all kernel memory before doing reservations. This prevents a locking >>>>>>> inversion between mmap_sem and reservation_class, and allows us to drop the trylocking >>>>>>> in ttm_bo_vm_fault without upsetting lockdep. >>>>>>> >>>>>>> Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com> >>>>>> I would say NAK. Current code only allocate temporary page in AGP case. >>>>>> So AGP case is userspace -> temp page -> cs checker -> radeon ib. >>>>>> >>>>>> Non AGP is directly memcpy to radeon IB. >>>>>> >>>>>> Your patch allocate memory memcpy userspace to it and it will then be >>>>>> memcpy to IB. Which means you introduce an extra memcpy in the process >>>>>> not something we want. >>>>> Totally agree. Additional to that there is no good reason to provide >>>>> anything else than anonymous system memory to the CS ioctl, so the >>>>> dependency between the mmap_sem and reservations are not really >>>>> clear to me. >>>>> >>>>> Christian. >>>> I think is that in other code path you take mmap_sem first then reserve >>>> bo. But here we reserve bo and then we take mmap_sem because of copy >>> >from user. >>>> Cheers, >>>> Jerome >>>> >>> Actually the log message is a little confusing. I think the mmap_sem >>> locking inversion problem is orthogonal to what's being fixed here. >>> >>> This patch fixes the possible recursive bo::reserve caused by >>> malicious user-space handing a pointer to ttm memory so that the ttm >>> fault handler is called when bos are already reserved. That may >>> cause a (possibly interruptible) livelock. >>> >>> Once that is fixed, we are free to choose the mmap_sem -> >>> bo::reserve locking order. Currently it's bo::reserve->mmap_sem(), >>> but the hack required in the ttm fault handler is admittedly a bit >>> ugly. The plan is to change the locking order to >>> mmap_sem->bo::reserve >>> >>> I'm not sure if it applies to this particular case, but it should be >>> possible to make sure that copy_from_user_inatomic() will always >>> succeed, by making sure the pages are present using >>> get_user_pages(), and release the pages after >>> copy_from_user_inatomic() is done. That way there's no need for a >>> double memcpy slowpath, but if the copied data is very fragmented I >>> guess the resulting code may look ugly. The get_user_pages() >>> function will return an error if it hits TTM pages. >>> >>> /Thomas >> get_user_pages + copy_from_user_inatomic is overkill. We should just >> do get_user_pages which fails with ttm memory and then use copy_highpage >> helper. >> >> Cheers, >> Jerome > Yeah, it may well be that that's the preferred solution. > > /Thomas > I still disagree, and shuffled radeon_ib_get around to be called sooner. How does the patch below look? 8<------- Allocate and copy all kernel memory before doing reservations. This prevents a locking inversion between mmap_sem and reservation_class, and allows us to drop the trylocking in ttm_bo_vm_fault without upsetting lockdep. Changes since v1: - Kill extra memcpy for !AGP case. Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com> Reviewed-by: Jerome Glisse <jglisse@redhat.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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