- 20 Dec, 2016 2 commits
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Hans de Goede authored
On my Cherrytrail CUBE iwork8 Air tablet PIPE-A would get stuck on loading i915 at boot 1 out of every 3 boots, resulting in a non functional LCD. Once the i915 driver has successfully loaded, the panel can be disabled / enabled without hitting this issue. The getting stuck is caused by vlv_init_display_clock_gating() clearing the DPOUNIT_CLOCK_GATE_DISABLE bit in DSPCLK_GATE_D when called from chv_pipe_power_well_ops.enable() on driver load, while a pipe is enabled driving the DSI LCD by the BIOS. Clearing this bit while DSI is in use is a known issue and intel_dsi_pre_enable() / intel_dsi_post_disable() already set / clear it as appropriate. This commit modifies vlv_init_display_clock_gating() to leave the DPOUNIT_CLOCK_GATE_DISABLE bit alone fixing the pipe getting stuck. Changes in v2: -Replace PIPE-A with "a pipe" or "the pipe" in the commit msg and comment Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=97330 Cc: stable@vger.kernel.org Signed-off-by:
Hans de Goede <hdegoede@redhat.com> Reviewed-by:
Ville Syrjälä <ville.syrjala@linux.intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/20161202142904.25613-1-hdegoede@redhat.comSigned-off-by:
Jani Nikula <jani.nikula@intel.com>
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Matthew Auld authored
We grab the struct_mutex in intel_crtc_page_flip, but if we are wedged or a reset is in progress we bail early but never seem to actually release the lock. Fixes: 7f1847eb ("drm/i915: Simplify checking of GPU reset_counter in display pageflips") Cc: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by:
Matthew Auld <matthew.auld@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/20161128103648.9235-1-matthew.auld@intel.comReviewed-by:
Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Reviewed-by:
Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by:
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- 05 Dec, 2016 9 commits
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Chris Wilson authored
David found another issue with priority bumping from mmioflips, where we are accessing the requests concurrently to them being retired and freed. Whilst we are skipping the dependency if has been submitted, that is not sufficient to stop the dependency from disappearing if another thread retires that request. To prevent we can either employ the struct_mutex (or a request mutex in the future) to serialise retiring before it is freed. Alternatively, we need to keep the dependencies alive using RCU whilst they are being accessed via the DFS. [ 1746.698111] general protection fault: 0000 [#1] PREEMPT SMP [ 1746.698305] Modules linked in: snd_hda_intel snd_hda_codec snd_hwdep x86_pkg_temp_thermal snd_hda_core coretemp crct10dif_pclmul crc32_pclmul snd_pcm ghash_clmulni_intel mei_me mei i915 e1000e ptp pps_core i2c_hid [ 1746.698750] CPU: 1 PID: 6716 Comm: kworker/u8:2 Not tainted 4.9.0-rc6-CI-Nightly_816+ #1 [ 1746.698871] Hardware name: GIGABYTE GB-BKi7A-7500/MFLP7AP-00, BIOS F1 07/27/2016 [ 1746.699125] Workqueue: events_unbound intel_mmio_flip_work_func [i915] [ 1746.699266] task: ffff880260a5e800 task.stack: ffffc90000f6c000 [ 1746.699361] RIP: 0010:[<ffffffffa006595d>] [<ffffffffa006595d>] execlists_schedule+0x8d/0x300 [i915] [ 1746.699632] RSP: 0018:ffffc90000f6fcd8 EFLAGS: 00010206 [ 1746.699724] RAX: dead0000000000f8 RBX: ffff8801f64b2bf0 RCX: ffff8801f64b2c10 [ 1746.699842] RDX: dead000000000100 RSI: 0000000000000000 RDI: ffff8801f64b0458 [ 1746.699972] RBP: ffffc90000f6fd68 R08: ffff88026488dc00 R09: 0000000000000002 [ 1746.700090] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000400 [ 1746.700195] R13: ffffc90000f6fcf0 R14: ffff88020955aa40 R15: ffff88020955aa68 [ 1746.700307] FS: 0000000000000000(0000) GS:ffff88026dc80000(0000) knlGS:0000000000000000 [ 1746.700435] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1746.700532] CR2: 0000000002a69e90 CR3: 0000000002c07000 CR4: 00000000003406e0 [ 1746.700635] Stack: [ 1746.700682] ffff880260a5e880 ffffc90000f6fd50 ffffffff810af69a ffffc90000f6fd28 [ 1746.700827] ffff88020955a628 ffff8801e1eaebf0 0000000000000020 0000000000000000 [ 1746.700947] 00000196af1edc96 ffff88025dfa4000 ffff8801f0b030a8 ffffc90000f6fcf0 [ 1746.701071] Call Trace: [ 1746.701117] [<ffffffff810af69a>] ? dequeue_entity+0x25a/0xb50 [ 1746.701260] [<ffffffffa00516be>] fence_set_priority+0x7e/0x80 [i915] [ 1746.701406] [<ffffffffa0051a15>] i915_gem_object_wait_priority+0x85/0x160 [i915] [ 1746.701599] [<ffffffffa008ccd7>] intel_mmio_flip_work_func+0x47/0x2b0 [i915] [ 1746.701717] [<ffffffff81094c4d>] process_one_work+0x14d/0x470 [ 1746.701809] [<ffffffff81094fb3>] worker_thread+0x43/0x4e0 [ 1746.701888] [<ffffffff81094f70>] ? process_one_work+0x470/0x470 [ 1746.701969] [<ffffffff81094f70>] ? process_one_work+0x470/0x470 [ 1746.702072] [<ffffffff8109a4d5>] kthread+0xc5/0xe0 [ 1746.702152] [<ffffffff81771c59>] ? _raw_spin_unlock_irq+0x9/0x10 [ 1746.702234] [<ffffffff8109a410>] ? kthread_park+0x60/0x60 [ 1746.702318] [<ffffffff81772272>] ret_from_fork+0x22/0x30 [ 1746.702387] Code: 89 42 08 48 8b 45 88 48 89 55 c0 4c 89 6d c8 4c 8d 70 d8 4d 8d 7e 28 4d 39 ef 74 72 49 8b 1e 48 8b 13 48 39 d3 48 8d 42 f8 74 3e <48> 8b 10 8b 52 38 41 39 d4 7e 26 48 8b 50 30 48 8b 78 28 48 8d [ 1746.702921] RIP [<ffffffffa006595d>] execlists_schedule+0x8d/0x300 [i915] Nov 25 21:42:54 kbl-gbbki7 kernel: [ 1746.703027] RSP <ffffc90000f6fcd8> Fixes: 27745e82 ("drm/i915/execlists: Use a local lock for dfs_link access") Fixes: 9a151987 ("drm/i915: Add execution priority boosting for mmioflips") Signed-off-by:
Tvrtko Ursulin <tvrtko.ursulin@intel.com> (cherry picked from commit 92117f0b) Signed-off-by:
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Chris Wilson authored
Currently, we have an active reference for the request until it is retired. Though it cannot be retired before it has been executed by hardware, the request may be completed before we have finished processing the execute fence, i.e. we may continue to process that fence as we free the request. Fixes: 5590af3e ("drm/i915: Drive request submission through fence callbacks") Fixes: 23902e49 ("drm/i915: Split request submit/execute phase into two") Signed-off-by:
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Libin Yang authored
Some monitors will have noise or even no sound after applying the patch 6014ac12. In patch 6014ac12, it will reset the cts value to 0 for HDMI. However, we need to disable Enable CTS or M Prog bit. This is the initial setting after HW reset. Fixes: 6014ac12 ("drm/i915/audio: set proper N/M in modeset") Signed-off-by:
Libin Yang <libin.yang@intel.com> Signed-off-by:
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Chris Wilson authored
The i915_next_seqno read value is to be the next seqno used by the kernel. However, in the conversion to atomics ops for gt.next_seqno, in commit 28176ef4 ("drm/i915: Reserve space in the global seqno during request allocation"), this was changed from a post-increment to a pre-increment. This increment was missed from the value reported by debugfs, so in effect it was reporting the current seqno (last assigned), not the next seqno. Fixes: 28176ef4 ("drm/i915: Reserve space in the global seqno during request allocation") Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=81209Signed-off-by:
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Chris Wilson authored
i915_hws_info() has not been kept upto date (missing new engines) and so I consider it to be unused. HWS is included in the error state, which would be an avenue to retrieving it if required in future (possibly via i915_engine_info). As it is currently oopsing with an rpm testcase, just remove it. Fixes: 3b3f1650 ("drm/i915: Allocate intel_engine_cs structure only for the enabled engines") Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=98838Signed-off-by:
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Ville Syrjälä authored
Looks like we're only initializing dev_priv->atomic_cdclk_freq at resume and commit times, not at init time. Let's do that as well. We're now hitting the 'WARN_ON(intel_state->cdclk == 0)' in hsw_compute_linetime_wm() on account of populating intel_state->cdclk from dev_priv->atomic_cdclk_freq. Previously we were mispopulating intel_state->cdclk with dev_priv->cdclk_freq which always had a proper value at init time and hence the WARN_ON() didn't trigger. Cc: <stable@vger.kernel.org> # 4.6+: 14676ec6 drm/i915: Fix cdclk vs. dev_cdclk mess when not recomputing things Cc: <stable@vger.kernel.org> # 4.6+ Cc: Matthew Auld <matthew.auld@intel.com> Reported-by:
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Ville Syrjälä authored
When we end up not recomputing the cdclk, we need to populate intel_state->cdclk with the "atomic_cdclk_freq" instead of the current cdclk_freq. When no pipes are active, the actual cdclk_freq may be lower than what the configuration of the planes and pipes would require from the point of view of the software state. This fixes bogus WARNS from skl_max_scale() which is trying to check the plane software state against the cdclk frequency. So any time it got called during DPMS off for instance, we might have tripped the warn if the current mode would have required a higher than minimum cdclk. v2: Drop the dev_cdclk stuff (Maarten) Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Cc: Mika Kahola <mika.kahola@intel.com> Cc: bruno.pagani@ens-lyon.org Cc: Daniel J Blueman <daniel.blueman@gmail.com> Cc: Paul Bolle <pebolle@tiscali.nl> Cc: Joseph Yasi <joe.yasi@gmail.com> Tested-by:
Paul Bolle <pebolle@tiscali.nl> Tested-by: Joseph Yasi <joe.yasi@gmail.com> (v1) Cc: <stable@vger.kernel.org> # v4.6+ Fixes: 1a617b77 ("drm/i915: Keep track of the cdclk as if all crtc's were active.") Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=98214Signed-off-by:
Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1479141311-11904-2-git-send-email-ville.syrjala@linux.intel.com (cherry picked from commit e0ca7a6b) Signed-off-by:
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Ville Syrjälä authored
Someone forgot to make skl_write_{plane,cursor}_wm() static when removing the prototypes from the header. Sparse isn't pleased. Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Cc: Lyude <cpaul@redhat.com> Cc: Matt Roper <matthew.d.roper@intel.com> Fixes: e62929b3 ("drm/i915/gen9+: Program watermarks as a separate step during evasion, v3.") Signed-off-by:Lyude <lyude@redhat.com> Reviewed-by:
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Chris Wilson authored
Since the submit/execute split in commit d55ac5bf ("drm/i915: Defer transfer onto execution timeline to actual hw submission") the global seqno advance was deferred until the submit_request callback. After wedging the GPU, we were installing a nop_submit_request handler (to avoid waking up the dead hw) but I had missed converting this over to the new scheme. Under the new scheme, we have to explicitly call i915_gem_submit_request() from the submit_request handler to mark the request as on the hardware. If we don't the request is always pending, and any waiter will continue to wait indefinitely and hangcheck will not be able to resolve the lockup. References: https://bugs.freedesktop.org/show_bug.cgi?id=98748 Testcase: igt/gem_eio/in-flight Fixes: d55ac5bf ("drm/i915: Defer transfer onto execution timeline to actual hw submission") Signed-off-by:
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- 02 Dec, 2016 1 commit
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https://github.com/01org/gvt-linuxJani Nikula authored
From Zhenyu Wang <zhenyuw@linux.intel.com> gvt-next-2016-11-30 - initialize vgpu as primary for correct cfg space setting - fix 64 bit bar emulation - fix un-released lock issue on dispatch workload err path Signed-off-by:
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- 25 Nov, 2016 1 commit
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Zhenyu Wang authored
Need to be careful to release struct_mutext when request alloc failed and take consistent handling for return status as with normal go out path. Ensure to check correct workload request in complete path too. v2: Add Fixes note Fixes: 90d27a1b ("drm/i915/gvt: fix deadlock in workload_thread") Reported-by:
Dan Carpenter <dan.carpenter@oracle.com> Cc: Dan Carpenter <dan.carpenter@oracle.com> Cc: Pei Zhang <pei.zhang@intel.com> Signed-off-by:
Zhenyu Wang <zhenyuw@linux.intel.com>
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- 24 Nov, 2016 1 commit
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Xiaoguang Chen authored
For 64bit bar while reading the higher 32bit the value should be returned directly. In the current implementation the higher 32bit value was discarded and not written to the cfg space of vgpu which lead to an incorrect bar size. Signed-off-by:
Xiaoguang Chen <xiaoguang.chen@intel.com> Signed-off-by:
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- 23 Nov, 2016 1 commit
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Du, Changbin authored
Initiate param.primary to 1. We should be primary currently. Signed-off-by:
Du, Changbin <changbin.du@intel.com> Signed-off-by:
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- 21 Nov, 2016 1 commit
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Daniel Vetter authored
Signed-off-by:Daniel Vetter <daniel.vetter@ffwll.ch>
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- 18 Nov, 2016 9 commits
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Chris Wilson authored
If the LLC is coherent with the object, we do not need to worry about whether main memory and cache mismatch when we hand the object back to the system. Signed-off-by:
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Chris Wilson authored
Currently we only clflush the scanout if it is in the CPU domain. Also flush if we have a pending CPU clflush. We also want to treat the dirtyfb path similar, and flush any pending writes there as well. v2: Only send the fb flush message if flushing the dirt on flip v3: Make flush-for-flip and dirtyfb look more alike since they serve similar roles as end-of-frame marker. Signed-off-by:
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Chris Wilson authored
On the DMA mapping error path, sg may be NULL (it has already been marked as the last scatterlist entry), and we should avoid dereferencing it again. Reported-by:
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Chris Wilson authored
Trying to chase an impossible bug (ivb): [ 207.765411] [drm:i915_reset_and_wakeup [i915]] resetting chip [ 207.765734] [drm:i915_gem_reset [i915]] resetting render ring to restart from tail of request 0x4ee834 [ 207.765791] [drm:intel_print_rc6_info [i915]] Enabling RC6 states: RC6 on RC6p on RC6pp off [ 207.767213] [drm:intel_guc_setup [i915]] GuC fw status: path (null), fetch NONE, load NONE [ 207.767515] kernel BUG at drivers/gpu/drm/i915/i915_gem_request.c:203! [ 207.767551] invalid opcode: 0000 [#1] PREEMPT SMP [ 207.767576] Modules linked in: snd_hda_intel i915 cdc_ncm usbnet mii x86_pkg_temp_thermal coretemp crct10dif_pclmul crc32_pclmul ghash_clmulni_intel lpc_ich snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic snd_hda_codec snd_hwdep snd_hda_core mei_me mei snd_pcm sdhci_pci sdhci mmc_core e1000e ptp pps_core [last unloaded: i915] [ 207.767808] CPU: 3 PID: 8855 Comm: gem_ringfill Tainted: G U 4.9.0-rc5-CI-Patchwork_3052+ #1 [ 207.767854] Hardware name: LENOVO 2356GCG/2356GCG, BIOS G7ET31WW (1.13 ) 07/02/2012 [ 207.767894] task: ffff88012c82a740 task.stack: ffffc9000383c000 [ 207.767927] RIP: 0010:[<ffffffffa00a0a3a>] [<ffffffffa00a0a3a>] i915_gem_request_retire+0x2a/0x4b0 [i915] [ 207.767999] RSP: 0018:ffffc9000383fb20 EFLAGS: 00010293 [ 207.768027] RAX: 00000000004ee83c RBX: ffff880135dcb480 RCX: 00000000004ee83a [ 207.768062] RDX: ffff88012fea42a8 RSI: 0000000000000001 RDI: ffff88012c82af68 [ 207.768095] RBP: ffffc9000383fb48 R08: 0000000000000000 R09: 0000000000000000 [ 207.768129] R10: 0000000000000000 R11: 0000000000000000 R12: ffff880135dcb480 [ 207.768163] R13: ffff88012fea42a8 R14: 0000000000000000 R15: 00000000000001d8 [ 207.768200] FS: 00007f955f658740(0000) GS:ffff88013e2c0000(0000) knlGS:0000000000000000 [ 207.768239] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 207.768258] CR2: 0000555899725930 CR3: 00000001316f6000 CR4: 00000000001406e0 [ 207.768286] Stack: [ 207.768299] ffff880135dcb480 ffff880135dcbe00 ffff88012fea42a8 0000000000000000 [ 207.768350] 00000000000001d8 ffffc9000383fb70 ffffffffa00a1339 0000000000000000 [ 207.768402] ffff88012f296c88 00000000000003f0 ffffc9000383fbb0 ffffffffa00b582d [ 207.768453] Call Trace: [ 207.768493] [<ffffffffa00a1339>] i915_gem_request_retire_upto+0x49/0x90 [i915] [ 207.768553] [<ffffffffa00b582d>] intel_ring_begin+0x15d/0x2d0 [i915] [ 207.768608] [<ffffffffa00b59cb>] intel_ring_alloc_request_extras+0x2b/0x40 [i915] [ 207.768667] [<ffffffffa00a2fd9>] i915_gem_request_alloc+0x359/0x440 [i915] [ 207.768723] [<ffffffffa008bd03>] i915_gem_do_execbuffer.isra.15+0x783/0x1a10 [i915] [ 207.768766] [<ffffffff811a6a2e>] ? __might_fault+0x3e/0x90 [ 207.768816] [<ffffffffa008d380>] i915_gem_execbuffer2+0xc0/0x250 [i915] [ 207.768854] [<ffffffff815532a6>] drm_ioctl+0x1f6/0x480 [ 207.768900] [<ffffffffa008d2c0>] ? i915_gem_execbuffer+0x330/0x330 [i915] [ 207.768939] [<ffffffff81202f6e>] do_vfs_ioctl+0x8e/0x690 [ 207.768972] [<ffffffff818193ac>] ? retint_kernel+0x2d/0x2d [ 207.769004] [<ffffffff810d6ef2>] ? trace_hardirqs_on_caller+0x122/0x1b0 [ 207.769039] [<ffffffff812035ac>] SyS_ioctl+0x3c/0x70 [ 207.769068] [<ffffffff818189ae>] entry_SYSCALL_64_fastpath+0x1c/0xb1 [ 207.769103] Code: 90 55 48 89 e5 41 57 41 56 41 55 41 54 49 89 fc 53 8b 35 fa 7b e1 e1 85 f6 0f 85 55 03 00 00 41 8b 84 24 80 02 00 00 85 c0 75 02 <0f> 0b 49 8b 94 24 a8 00 00 00 48 8b 8a e0 01 00 00 8b 89 c0 00 [ 207.769400] RIP [<ffffffffa00a0a3a>] i915_gem_request_retire+0x2a/0x4b0 [i915] [ 207.769463] RSP <ffffc9000383fb20> Let's add a couple more BUG_ONs before this to ascertain that the request did make it to hardware. The impossible part of this stacktrace is that request must have been considered completed by the i915_request_wait() before we tried to retire it. Signed-off-by:
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Matthew Auld authored
When gathering the pages from our backing storage we expect get_pages() to either give us our sg_table or an err ptr. However when gathering our fake pages for stolen memory we may return NULL in the event of a failure. To prevent any funny business we should therefore return the proper err ptr value. Fixes: 03ac84f1 ("drm/i915: Pass around sg_table to get_pages/put_pages backend") Cc: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by:
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Maarten Lankhorst authored
Signed-off-by:
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Chris Wilson authored
Since we can retire requests from multiple paths, we cannot assume that i915_gem_retire_requests() is the sole path on which we can transition to gt.active_requests == 0. A consequence of this is that we would skip the function if we had already retired all the requests and not scheduled the idle worker. This is fallout from changing the routine from considering active_engines (for which it was the only consumer) to active_requests. v2: Move kicking the idle working to i915_gem_request_retire() otherwise we could postpone the idle callback everytime we called retire_requests even though we did no work. v3: We only need to move the idle work kicking! v4: Drop the BUG_ON(!awake) as we may be called from the shrinker in the middle of constructing a request before we have marked the device awake. v5: Add a BUG_ON() for active_requests underflow upon retirement (Joonas) Fixes: 28176ef4 ("drm/i915: Reserve space in the global seqno during request allocation") Signed-off-by:
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Chris Wilson authored
I tried to avoid having to track the write for every VMA by only tracking writes to the ggtt. However, for the purposes of frontbuffer tracking this is insufficient as we need to invalidate around writes not just to the the ggtt but all aliased ppgtt views of the framebuffer. By moving the critical section to the object and only doing so for framebuffer writes we can reduce the tracking even further by only watching framebuffers and not vma. Signed-off-by:
Paulo Zanoni <paulo.r.zanoni@intel.com> Reviewed-by:
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Tvrtko Ursulin authored
Otherwise it is just an useless empty line. Signed-off-by:
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- 17 Nov, 2016 15 commits
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Matthew Auld authored
We need to clean up the global_timeline in i915_gem_load_cleanup. v2: don't forget about the struct_mutex, and also WARN_ON if we have any remaining timelines before purging the global_timeline. v3: it might be a good idea to first remove the global_timeline...duh! Fixes: 73cb9701 ("drm/i915: Combine seqno + tracking into a global timeline struct") Cc: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by:
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Matthew Auld authored
We already have an i915_address_space_init, so for symmetry we should also have a _fini, plus we already open code it twice. This then also fixes a bug where we leak the timeline for the ggtt vm. v2: don't forget about the struct_mutex for the ggtt path. Fixes: 80b204bc ("drm/i915: Enable multiple timelines") Cc: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by:
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Chris Wilson authored
We should never be called via obj->ops->release() on anything other than a fully formed stolen object, so raise that to an assert. In the process tidy up a comment and variable no longer used outside of a conditional BUG. Reported-by:
kbuild test robot <fengguang.wu@intel.com> Signed-off-by:
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Tvrtko Ursulin authored
We have to make sure there are no holes in the table in Gen9. Signed-off-by:
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Tvrtko Ursulin authored
Similar to existing yesno and onoff and use it throughout the code. Signed-off-by:
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Tvrtko Ursulin authored
Signed-off-by: -
Tvrtko Ursulin authored
Signed-off-by: -
Tvrtko Ursulin authored
Signed-off-by: -
Tvrtko Ursulin authored
Kernel pointer does not sound like an useful thing to log and pipe name is already contained in the crtc name. Signed-off-by: -
Tvrtko Ursulin authored
Signed-off-by: -
Tvrtko Ursulin authored
And also only dump DP config for crtcs with DP encoders. Signed-off-by: -
Chris Wilson authored
We don't spam the debug when we create a normal object, nor when we allocate their pages. Yet we do for stolen objects, and since these are quite frequently used (at least once per context), the resulting spam floods the dmesg in CI. Signed-off-by:
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Chris Wilson authored
We use DRM_DEBUG() when reporting on user actions, to try and keep intentional errors out of the CI dmesg. Demote the debug from i915_gem_open() similarly so that it is only apparent with drm.debug & 1 like its brethren. Signed-off-by:
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Tvrtko Ursulin authored
It looks to me skl_update_scaler will already log interesting debug messages when the state transitions or there is an error. In this case it feels we can remove the two unconditional debug messages which happen immediately before calling skl_update_scaler. This way we get rid of the sole debug message when switching virtual terminals for example. Signed-off-by:
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Tvrtko Ursulin authored
And at the same time introduce a static inline helper for more type safety. Signed-off-by:
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