| Commit message (Collapse) | Author | Age | Files | Lines |
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Take a wakeref on the intel_gt specifically for the enabled breadcrumb
interrupt so that we can safely process the mmio. If the intel_gt is
already asleep by the time we try and setup the breadcrumb interrupt, by
a process of elimination we know the request must have been completed
and we can skip its enablement!
<4> [1518.350005] Unclaimed write to register 0x220a8
<4> [1518.350323] WARNING: CPU: 2 PID: 3685 at drivers/gpu/drm/i915/intel_uncore.c:1163 __unclaimed_reg_debug+0x40/0x50 [i915]
<4> [1518.350393] Modules linked in: vgem snd_hda_codec_hdmi x86_pkg_temp_thermal i915 coretemp crct10dif_pclmul crc32_pclmul ghash_clmulni_intel snd_hda_intel snd_intel_dspcfg snd_hda_codec snd_hwdep snd_hda_core btusb cdc_ether btrtl usbnet btbcm btintel r8152 snd_pcm mii bluetooth ecdh_generic ecc i2c_hid pinctrl_sunrisepoint pinctrl_intel intel_lpss_pci prime_numbers [last unloaded: vgem]
<4> [1518.350646] CPU: 2 PID: 3685 Comm: gem_exec_parse_ Tainted: G U 5.4.0-rc8-CI-CI_DRM_7490+ #1
<4> [1518.350708] Hardware name: Google Caroline/Caroline, BIOS MrChromebox 08/27/2018
<4> [1518.350946] RIP: 0010:__unclaimed_reg_debug+0x40/0x50 [i915]
<4> [1518.350992] Code: 74 05 5b 5d 41 5c c3 45 84 e4 48 c7 c0 95 8d 47 a0 48 c7 c6 8b 8d 47 a0 48 0f 44 f0 89 ea 48 c7 c7 9e 8d 47 a0 e8 40 45 e3 e0 <0f> 0b 83 2d 27 4f 2a 00 01 5b 5d 41 5c c3 66 90 41 55 41 54 55 53
<4> [1518.351100] RSP: 0018:ffffc900007f39c8 EFLAGS: 00010086
<4> [1518.351140] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000006
<4> [1518.351202] RDX: 0000000080000006 RSI: 0000000000000000 RDI: 00000000ffffffff
<4> [1518.351249] RBP: 00000000000220a8 R08: 0000000000000000 R09: 0000000000000000
<4> [1518.351296] R10: ffffc900007f3990 R11: ffffc900007f3868 R12: 0000000000000000
<4> [1518.351342] R13: 00000000fefeffff R14: 0000000000000092 R15: ffff888155fea000
<4> [1518.351391] FS: 00007fc255abfe40(0000) GS:ffff88817ab00000(0000) knlGS:0000000000000000
<4> [1518.351445] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
<4> [1518.351485] CR2: 00007fc2554882d0 CR3: 0000000168ca2005 CR4: 00000000003606e0
<4> [1518.351529] Call Trace:
<4> [1518.351746] fwtable_write32+0x114/0x1d0 [i915]
<4> [1518.351795] ? sync_file_alloc+0x80/0x80
<4> [1518.352039] gen8_logical_ring_enable_irq+0x30/0x50 [i915]
<4> [1518.352295] irq_enable.part.10+0x23/0x40 [i915]
<4> [1518.352523] i915_request_enable_breadcrumb+0xb5/0x330 [i915]
<4> [1518.352575] ? sync_file_alloc+0x80/0x80
<4> [1518.352612] __dma_fence_enable_signaling+0x60/0x160
<4> [1518.352653] ? sync_file_alloc+0x80/0x80
<4> [1518.352685] dma_fence_add_callback+0x44/0xd0
<4> [1518.352726] sync_file_poll+0x95/0xc0
<4> [1518.352767] do_sys_poll+0x24d/0x570
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191205215842.862750-1-chris@chris-wilson.co.uk
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Remove the vma we wish to destroy from the gt->closed_list to avoid
having two i915_vma_parked() try and free it.
Fixes: aa5e4453dc05 ("drm/i915/gem: Try to flush pending unbind events")
References: 2850748ef876 ("drm/i915: Pull i915_vma_pin under the vm->mutex")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191205214159.829727-1-chris@chris-wilson.co.uk
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It appears now that we have the ring TLB invalidation in place, we need
only update the page directory cachelines that we have altered. A great
reduction from rewriting the whole 2MiB ppgtt on every update.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Acked-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191205234059.1010030-1-chris@chris-wilson.co.uk
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As __active_retire() does it's final atomic_dec() under the
ref->tree_lock spinlock, in order to prevent ourselves from reusing the
ref->cache and ref->tree as they are being destroyed, we need to
serialise with the retirement during i915_active_acquire().
[ +0.000005] kernel BUG at drivers/gpu/drm/i915/i915_active.c:157!
[ +0.000011] invalid opcode: 0000 [#1] SMP
[ +0.000004] CPU: 7 PID: 188 Comm: kworker/u16:4 Not tainted 5.4.0-rc8-03070-gac5e57322614 #89
[ +0.000002] Hardware name: Razer Razer Blade Stealth 13 Late 2019/LY320, BIOS 1.02 09/10/2019
[ +0.000082] Workqueue: events_unbound active_work [i915]
[ +0.000059] RIP: 0010:__active_retire+0x115/0x120 [i915]
[ +0.000003] Code: 75 28 48 8b 3d 8c 6e 1a 00 48 89 ee e8 e4 5f a5 c0 48 8b 44 24 10 65 48 33 04 25 28 00 00 00 75 0f 48 83 c4 18 5b 5d 41 5c c3 <0f> 0b 0f 0b 0f 0b e8 a0 90 87 c0 0f 1f 44 00 00 48 8b 3d 54 6e 1a
[ +0.000002] RSP: 0018:ffffb833003f7e48 EFLAGS: 00010286
[ +0.000003] RAX: ffff8d6e8d726d00 RBX: ffff8d6f9db4e840 RCX: 0000000000000000
[ +0.000001] RDX: ffffffff82605930 RSI: ffff8d6f9adc4908 RDI: ffff8d6e96cefe28
[ +0.000002] RBP: ffff8d6e96cefe00 R08: 0000000000000000 R09: ffff8d6f9ffe9a50
[ +0.000002] R10: 0000000000000048 R11: 0000000000000018 R12: ffff8d6f9adc4930
[ +0.000001] R13: ffff8d6f9e04fb00 R14: 0000000000000000 R15: ffff8d6f9adc4988
[ +0.000002] FS: 0000000000000000(0000) GS:ffff8d6f9ffc0000(0000) knlGS:0000000000000000
[ +0.000002] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ +0.000002] CR2: 000055eb5a34cf10 CR3: 000000018d609002 CR4: 0000000000760ee0
[ +0.000002] PKRU: 55555554
[ +0.000001] Call Trace:
[ +0.000010] process_one_work+0x1aa/0x350
[ +0.000004] worker_thread+0x4d/0x3a0
[ +0.000004] kthread+0xfb/0x130
[ +0.000004] ? process_one_work+0x350/0x350
[ +0.000003] ? kthread_park+0x90/0x90
[ +0.000005] ret_from_fork+0x1f/0x40
Reported-by: Kenneth Graunke <kenneth@whitecape.org>
Fixes: c9ad602feabe ("drm/i915: Split i915_active.mutex into an irq-safe spinlock for the rbtree")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: Kenneth Graunke <kenneth@whitecape.org>
Cc: Matthew Auld <matthew.auld@intel.com>
Tested-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20191205183332.801237-1-chris@chris-wilson.co.uk
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Get rid of the last remaining I915_READ in gt/ and make gt-land
the first I915_READ-free happy island.
Suggested-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Andi Shyti <andi.shyti@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20191205164422.727968-1-chris@chris-wilson.co.uk
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As virtual_context_destroy() may be called from a request signal, it may
be called from inside an irq-off section, and so we need to do a full
save/restore of the irq state rather than blindly re-enable irqs upon
unlocking.
<4> [110.024262] WARNING: inconsistent lock state
<4> [110.024277] 5.4.0-rc8-CI-CI_DRM_7489+ #1 Tainted: G U
<4> [110.024292] --------------------------------
<4> [110.024305] inconsistent {IN-HARDIRQ-W} -> {HARDIRQ-ON-W} usage.
<4> [110.024323] kworker/0:0/5 [HC0[0]:SC0[0]:HE1:SE1] takes:
<4> [110.024338] ffff88826a0c7a18 (&(&rq->lock)->rlock){?.-.}, at: i915_request_retire+0x221/0x930 [i915]
<4> [110.024592] {IN-HARDIRQ-W} state was registered at:
<4> [110.024612] lock_acquire+0xa7/0x1c0
<4> [110.024627] _raw_spin_lock_irqsave+0x33/0x50
<4> [110.024788] intel_engine_breadcrumbs_irq+0x38c/0x600 [i915]
<4> [110.024808] irq_work_run_list+0x49/0x70
<4> [110.024824] irq_work_run+0x26/0x50
<4> [110.024839] smp_irq_work_interrupt+0x44/0x1e0
<4> [110.024855] irq_work_interrupt+0xf/0x20
<4> [110.024871] __do_softirq+0xb7/0x47f
<4> [110.024885] irq_exit+0xba/0xc0
<4> [110.024898] do_IRQ+0x83/0x160
<4> [110.024910] ret_from_intr+0x0/0x1d
<4> [110.024922] irq event stamp: 172864
<4> [110.024938] hardirqs last enabled at (172863): [<ffffffff819ea214>] _raw_spin_unlock_irq+0x24/0x50
<4> [110.024963] hardirqs last disabled at (172864): [<ffffffff819e9fba>] _raw_spin_lock_irq+0xa/0x40
<4> [110.024988] softirqs last enabled at (172812): [<ffffffff81c00385>] __do_softirq+0x385/0x47f
<4> [110.025012] softirqs last disabled at (172797): [<ffffffff810b829a>] irq_exit+0xba/0xc0
<4> [110.025031]
other info that might help us debug this:
<4> [110.025049] Possible unsafe locking scenario:
<4> [110.025065] CPU0
<4> [110.025075] ----
<4> [110.025084] lock(&(&rq->lock)->rlock);
<4> [110.025099] <Interrupt>
<4> [110.025109] lock(&(&rq->lock)->rlock);
<4> [110.025124]
*** DEADLOCK ***
<4> [110.025144] 4 locks held by kworker/0:0/5:
<4> [110.025156] #0: ffff88827588f528 ((wq_completion)events){+.+.}, at: process_one_work+0x1de/0x620
<4> [110.025187] #1: ffffc9000006fe78 ((work_completion)(&engine->retire_work)){+.+.}, at: process_one_work+0x1de/0x620
<4> [110.025219] #2: ffff88825605e270 (&kernel#2){+.+.}, at: engine_retire+0x57/0xe0 [i915]
<4> [110.025405] #3: ffff88826a0c7a18 (&(&rq->lock)->rlock){?.-.}, at: i915_request_retire+0x221/0x930 [i915]
<4> [110.025634]
stack backtrace:
<4> [110.025653] CPU: 0 PID: 5 Comm: kworker/0:0 Tainted: G U 5.4.0-rc8-CI-CI_DRM_7489+ #1
<4> [110.025675] Hardware name: /NUC7i5BNB, BIOS BNKBL357.86A.0054.2017.1025.1822 10/25/2017
<4> [110.025856] Workqueue: events engine_retire [i915]
<4> [110.025872] Call Trace:
<4> [110.025891] dump_stack+0x71/0x9b
<4> [110.025907] mark_lock+0x49a/0x500
<4> [110.025926] ? print_shortest_lock_dependencies+0x200/0x200
<4> [110.025946] mark_held_locks+0x49/0x70
<4> [110.025962] ? _raw_spin_unlock_irq+0x24/0x50
<4> [110.025978] lockdep_hardirqs_on+0xa2/0x1c0
<4> [110.025995] _raw_spin_unlock_irq+0x24/0x50
<4> [110.026171] virtual_context_destroy+0xc5/0x2e0 [i915]
<4> [110.026376] __active_retire+0xb4/0x290 [i915]
<4> [110.026396] dma_fence_signal_locked+0x9e/0x1b0
<4> [110.026613] i915_request_retire+0x451/0x930 [i915]
<4> [110.026766] retire_requests+0x4d/0x60 [i915]
<4> [110.026919] engine_retire+0x63/0xe0 [i915]
Fixes: b1e3177bd1d8 ("drm/i915: Coordinate i915_active with its own mutex")
Fixes: 6d06779e8672 ("drm/i915: Load balancing across a virtual engine")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191205145934.663183-1-chris@chris-wilson.co.uk
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As we may start the loop again, we require our local list of i915_vma
we've processed to be reinitialised.
Fixes: aa5e4453dc05 ("drm/i915/gem: Try to flush pending unbind events")
Closes: https://gitlab.freedesktop.org/drm/intel/issues/731
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Andi Shyti <andi.shyti@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191205132912.606868-1-chris@chris-wilson.co.uk
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Invalidate the ring TLB and increase the delay required for Baytrail.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Acked-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191205113726.413351-3-chris@chris-wilson.co.uk
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It is not acceptable for context pinning to fail with -ENOSPC as we
should always be able to make space in the GGTT. The only reason we may
fail is that other "temporary" context pins are reserving their space
and we need to wait for an available slot.
Closes: https://gitlab.freedesktop.org/drm/intel/issues/676
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Acked-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191205113726.413351-2-chris@chris-wilson.co.uk
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Removing all vma from the VM is best effort -- we only remove all those
ready to be removed, so forgive and VMA that becomes pinned. While
forgiving those that become pinned, also take a second look for any that
became unpinned as we waited.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Acked-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191205113726.413351-1-chris@chris-wilson.co.uk
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The use GEM context itself was removed in commit cd30a5031704
("drm/i915/gem: Excise the per-batch whitelist from the context"), but
the locals were left in place as an oversight. Remove the parameters and
clean up.
References: cd30a5031704 ("drm/i915/gem: Excise the per-batch whitelist from the context")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191204232616.94397-1-chris@chris-wilson.co.uk
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Call i915_user_extensions() to validate the arg->extensions pointer, and
so return consistent error numbers for the future.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Abdiel Janulgue <abdiel.janulgue@linux.intel.com>
Cc: Matthew Auld <matthew.auld@intel.com>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191204162803.3841140-1-chris@chris-wilson.co.uk
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Remember to take the lock before walking the obj->vma.list so that the
nodes do not change beneath us! E.g.,
i915_gem_object_bump_inactive_ggtt:387 GEM_BUG_ON(vma->vm != &i915->ggtt.vm)
Closes: https://gitlab.freedesktop.org/drm/intel/issues/691
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Matthew Auld <matthew.auld@intel.com>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191204164527.3872783-1-chris@chris-wilson.co.uk
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If we cannot handle a vma within the unbind loop, try to flush the
pending events (i915_vma_parked, i915_vm_release) and try again. This
avoids a round trip to userspace that is not guaranteed to make forward
progress, as the events we wait upon require being idle.
References: cb6c3d45f948 ("drm/i915/gem: Avoid parking the vma as we unbind")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Matthew Auld <matthew.auld@intel.com>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191204123556.3740002-1-chris@chris-wilson.co.uk
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This is really just an alias of mmap_gtt. The 'mmap offset' nomenclature
comes from the value returned by this ioctl which is the offset into the
device fd which userpace uses with mmap(2).
mmap_gtt was our initial mmap_offset implementation, this extends
our CPU mmap support to allow additional fault handlers that depends on
the object's backing pages.
Note that we multiplex mmap_gtt and mmap_offset through the same ioctl,
and use the zero extending behaviour of drm to differentiate between
them, when we inspect the flags.
To support multiple mmap types on an object we need to support multiple
mmap_offsets for an object (each offset in the global device address
space corresponding to a unique instance of the object for a file + mmap
type). As we drop the simplified drm core idea of a single mmap_offset,
we need to provide replacement hooks for the dumb mmap interface as
well.
Link: https://gitlab.freedesktop.org/mesa/mesa/merge_requests/1675
Testcase: igt/gem_mmap_offset
Signed-off-by: Abdiel Janulgue <abdiel.janulgue@linux.intel.com>
Signed-off-by: Matthew Auld <matthew.auld@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20191204120032.3682839-1-chris@chris-wilson.co.uk
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There is no need to have the 'T *v' variable static
since new value always be assigned before use it.
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Mao Wenan <maowenan@huawei.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20191204010154.152396-1-maowenan@huawei.com
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Assuming intel_crtc_arm_fifo_underrun() only gets called when
there's no pending plane updates we can utilize it on gen2 by
checking the active_planes bitmask so that we only re-enable
underrun reporting if some planes are active.
i915_fifo_underrun_reset_write() seems to have the necessary
hw_done/flip_done waits in place.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191127190556.1574-8-ville.syrjala@linux.intel.com
Reviewed-by: José Roberto de Souza <jose.souza@intel.com>
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Let's just inline intel_pre_disable_primary_noatomic() into
intel_plane_disable_noatomic(). The CxSR disable we can do
regardless of which plane we're disabling, and while at it we can
make the gen2 underrun w/a accurate by consulting the active_planes
bitmask.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191127190556.1574-7-ville.syrjala@linux.intel.com
Reviewed-by: José Roberto de Souza <jose.souza@intel.com>
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We have the active_planes bitmask now so use it to properly
determine when some planes are visible for the gen2 underrun
workaround.
This let's us almost eliminate intel_post_enable_primary().
The manual underrun checks we can simply move into
intel_atomic_commit_tail() since they loop over all the pipes
already. No point in repeating the checks multiple times when
there are multiple pipes in the commit.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191127190556.1574-6-ville.syrjala@linux.intel.com
Reviewed-by: José Roberto de Souza <jose.souza@intel.com>
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Change the calling convention to just pass the state+crtc and
switch to intel_ types throughout.
We'll also do a quick s/if (old_primary_state)/if (new_primary_state)/
so that we'll be able to eliminate old_primary_state later. This
is fine since we always have either both old and new state or neither.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191127190556.1574-5-ville.syrjala@linux.intel.com
Reviewed-by: José Roberto de Souza <jose.souza@intel.com>
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Replace the old world 'pipe_config' variable name with the new thing.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191127190556.1574-4-ville.syrjala@linux.intel.com
Reviewed-by: José Roberto de Souza <jose.souza@intel.com>
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Get rid of another 'dev' usage by passing dev_priv instead.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191127190556.1574-3-ville.syrjala@linux.intel.com
Reviewed-by: José Roberto de Souza <jose.souza@intel.com>
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Don't pass the redundant dev_priv to needs_nv12_wa() and
needs_scalerclk_wa().
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191127190556.1574-2-ville.syrjala@linux.intel.com
Reviewed-by: José Roberto de Souza <jose.souza@intel.com>
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And Haswell still occasionally forgets it is meant to be using a new
page directory, so repeat ourselves a little louder.
<7> [509.919864] heartbeat rcs0 heartbeat {prio:-2147483645} not ticking
<7> [509.919895] heartbeat Awake? 8
<7> [509.919903] heartbeat Barriers?: no
<7> [509.919912] heartbeat Heartbeat: 3008 ms ago
<7> [509.919930] heartbeat Reset count: 0 (global 0)
<7> [509.919937] heartbeat Requests:
<7> [509.921008] heartbeat active a7eb:56e1* @ 5847ms:
<7> [509.921157] heartbeat ring->start: 0x00001000
<7> [509.921164] heartbeat ring->head: 0x00001610
<7> [509.921170] heartbeat ring->tail: 0x000023d8
<7> [509.921176] heartbeat ring->emit: 0x000023d8
<7> [509.921182] heartbeat ring->space: 0x00002570
<7> [509.921189] heartbeat ring->hwsp: 0x7fffe100
<7> [509.921197] heartbeat [head 1628, postfix 1738, tail 1750, batch 0xffffffff_ffffffff]:
<7> [509.921289] heartbeat [0000] 7a000002 00100002 00000000 00000000 7a000002 01154c1e 7ffff080 00000000
<7> [509.921299] heartbeat [0020] 11000001 00002220 ffffffff 12400001 00002220 7ffff000 00000000 11000001
<7> [509.921308] heartbeat [0040] 00002228 6e900000 7a000002 00100002 00000000 00000000 7a000002 01154c1e
<7> [509.921317] heartbeat [0060] 7ffff080 00000000 12400001 00002228 7ffff000 00000000 7a000002 00100002
<7> [509.921326] heartbeat [0080] 00000000 00000000 7a000002 01154c1e 7ffff080 00000000 7a000002 001010a1
<7> [509.921335] heartbeat [00a0] 7ffff080 00000000 04000000 11000005 00022050 00010001 00012050 00010001
<7> [509.921345] heartbeat [00c0] 0001a050 00010001 00000000 0c000000 459a110c 00000000 11000005 00022050
<7> [509.921354] heartbeat [00e0] 00010000 00012050 00010000 0001a050 00010000 12400001 0001a050 7ffff000
<7> [509.921363] heartbeat [0100] 00000000 04000001 18802100 00000000 7a000002 011050a1 7fffe100 000056e1
<7> [509.921370] heartbeat [0120] 01000000 00000000
<7> [509.921538] heartbeat MMIO base: 0x00002000
<7> [509.921682] heartbeat CCID: 0x3fa0110d
<7> [509.922342] heartbeat RING_START: 0x00001000
<7> [509.922353] heartbeat RING_HEAD: 0x00001628
<7> [509.922366] heartbeat RING_TAIL: 0x000023d8
<7> [509.922381] heartbeat RING_CTL: 0x00003001
<7> [509.922396] heartbeat RING_MODE: 0x00004000
<7> [509.922408] heartbeat RING_IMR: ffffffde
<7> [509.922421] heartbeat ACTHD: 0x00000000_30e01628
<7> [509.922434] heartbeat BBADDR: 0x00000000_00004004
<7> [509.922446] heartbeat DMA_FADDR: 0x00000000_00002800
<7> [509.922458] heartbeat IPEIR: 0x00000000
<7> [509.922470] heartbeat IPEHR: 0x780c0000
<7> [509.922642] heartbeat PP_DIR_BASE: 0x6e700000
<7> [509.922652] heartbeat PP_DIR_BASE_READ: 0x00000000
<7> [509.922662] heartbeat PP_DIR_DCLV: 0xffffffff
<7> [509.922678] heartbeat E a7eb:56e1* @ 5849ms:
<7> [509.922689] heartbeat E a7eb:56e2- @ 5849ms:
<7> [509.922698] heartbeat E a7eb:56e3 @ 5848ms:
<7> [509.922707] heartbeat E a7eb:56e4 @ 5848ms:
<7> [509.922715] heartbeat E a7eb:56e5 @ 5847ms:
<7> [509.922724] heartbeat E a7eb:56e6 @ 5846ms:
<7> [509.922735] heartbeat E a7eb:56e7 @ 5846ms:
<7> [509.922744] heartbeat ...skipping 4 executing requests...
<7> [509.922754] heartbeat E a7eb:56ec @ 3010ms:
<7> [509.922796] heartbeat HWSP:
<7> [509.922807] heartbeat [0000] 00000001 00000000 00000000 00000000 00000000 00000000 00000000 00000000
<7> [509.922817] heartbeat [0020] 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
<7> [509.922826] heartbeat *
<7> [509.922836] heartbeat [0100] 000056e0 00000000 00000000 00000000 00000000 00000000 00000000 00000000
<7> [509.922845] heartbeat [0120] 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
<7> [509.922851] heartbeat *
<7> [509.922870] heartbeat Idle? no
<7> [509.922878] heartbeat Signals:
<7> [509.923000] heartbeat [a7eb:56e2] @ 5850ms
Here, we have a failed context restore after the PD switch, but note
that the PP_DIR_BASE register does not match the LRI in the ring.
Bump it to 8^W 4 loops, and with that Baytrail starts passing the sanity
checks.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Acked-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191203211631.3167430-1-chris@chris-wilson.co.uk
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In order to avoid keeping a reference on the i915_vma (which is long
overdue!) we have to coordinate all the possible lifetimes and only use
the vma while we know it is alive. In this episode, we are reminded that
while idle, the closed vma are destroyed. So if the GT idles while we are
working with the vma, the vma itself becomes invalid.
First class i915_vma here we come, but in the meantime keep piling on
the straw.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191203155032.3137263-1-chris@chris-wilson.co.uk
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Moving just to simplify handling as there is no change in behavior.
Cc: Lucas De Marchi <lucas.demarchi@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191202222513.337777-3-jose.souza@intel.com
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Disabling pipe/transcoder clock before power down sink could cause
sink lost signal, causing it to trigger a hotplug to notify source
that link signal was lost.
Cc: Lucas De Marchi <lucas.demarchi@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191202222513.337777-2-jose.souza@intel.com
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If the CRTC is going from enabled to disabled and it is a port sync
slave, it needs to check to the old state to be disabled before the
port sync master.
Cc: Manasi Navare <manasi.d.navare@intel.com>
Cc: Matt Roper <matthew.d.roper@intel.com>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191202222513.337777-1-jose.souza@intel.com
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Let's move handling and reset for gen11 display IRQs to their own
functions, similar to how we deal with GT interrupts. This will make
the top-level functions a bit easier to read and potentially make things
easier to deal with in the future if new platforms wind up needing
different display handling logic.
Cc: Lucas De Marchi <lucas.demarchi@intel.com>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191202171608.3361125-1-matthew.d.roper@intel.com
Reviewed-by: Radhakrishna Sripada <radhakrishna.sripada@intel.com>
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Rather than assume if and only if the engine->default_state is not set
that the context is invalid, instead track when we know the context has
valid state -- either because we have copied the default_state or we
have completed a context switch to save the HW state.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Acked-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191203124155.3019926-1-chris@chris-wilson.co.uk
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Only along the submission path can we guarantee that the locked request
is indeed from a foreign engine, and so the nesting of engine/rq is
permissible. On the submission tasklet (process_csb()), we may find
ourselves competing with the normal nesting of rq/engine, invalidating
our nesting. As we only use the spinlock for debug purposes, skip the
debug if we cannot acquire the spinlock for safe validation - catching
99% of the bugs is better than causing a hard lockup.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Fixes: c95d31c3df1b ("drm/i915/execlists: Lock the request while validating it during promotion")
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191203152631.3107653-2-chris@chris-wilson.co.uk
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Check the pending request submission is valid: that it at least has a
reference for the submission and that the request is on the active list.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191203152631.3107653-1-chris@chris-wilson.co.uk
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Once inside a request, inside the timeline->mutex, pinning is verboten.
<4> [896.032829] ======================================================
<4> [896.032831] WARNING: possible circular locking dependency detected
<4> [896.032835] 5.4.0-rc8-CI-Patchwork_15533+ #1 Tainted: G U
<4> [896.032838] ------------------------------------------------------
<4> [896.032841] gem_exec_parall/3720 is trying to acquire lock:
<4> [896.032844] ffff888401863270 (&kernel#2){+.+.}, at: i915_request_create+0x16/0x1c0 [i915]
<4> [896.032915]
but task is already holding lock:
<4> [896.032917] ffff8883ec1c93c0 (&vm->mutex){+.+.}, at: i915_vma_pin+0xf3/0x11c0 [i915]
<4> [896.032952]
which lock already depends on the new lock.
<4> [896.032954]
the existing dependency chain (in reverse order) is:
<4> [896.032956]
-> #1 (&vm->mutex){+.+.}:
<4> [896.032961] __mutex_lock+0x9a/0x9d0
<4> [896.032995] i915_vma_pin+0xf3/0x11c0 [i915]
<4> [896.033033] intel_renderstate_emit+0xb9/0x9e0 [i915]
<4> [896.033081] i915_gem_init+0x5a9/0xa50 [i915]
<4> [896.033112] i915_driver_probe+0xb00/0x15f0 [i915]
<4> [896.033144] i915_pci_probe+0x43/0x1c0 [i915]
<4> [896.033149] pci_device_probe+0x9e/0x120
<4> [896.033154] really_probe+0xea/0x420
<4> [896.033158] driver_probe_device+0x10b/0x120
<4> [896.033161] device_driver_attach+0x4a/0x50
<4> [896.033164] __driver_attach+0x97/0x130
<4> [896.033168] bus_for_each_dev+0x74/0xc0
<4> [896.033171] bus_add_driver+0x142/0x220
<4> [896.033174] driver_register+0x56/0xf0
<4> [896.033178] do_one_initcall+0x58/0x2ff
<4> [896.033183] do_init_module+0x56/0x1f8
<4> [896.033187] load_module+0x243e/0x29f0
<4> [896.033190] __do_sys_finit_module+0xe9/0x110
<4> [896.033194] do_syscall_64+0x4f/0x210
<4> [896.033197] entry_SYSCALL_64_after_hwframe+0x49/0xbe
<4> [896.033200]
-> #0 (&kernel#2){+.+.}:
<4> [896.033206] __lock_acquire+0x1328/0x15d0
<4> [896.033209] lock_acquire+0xa7/0x1c0
<4> [896.033213] __mutex_lock+0x9a/0x9d0
<4> [896.033255] i915_request_create+0x16/0x1c0 [i915]
<4> [896.033287] intel_engine_flush_barriers+0x4c/0x100 [i915]
<4> [896.033327] ggtt_flush+0x37/0x60 [i915]
<4> [896.033366] i915_gem_evict_something+0x46b/0x5a0 [i915]
<4> [896.033407] i915_gem_gtt_insert+0x21d/0x6a0 [i915]
<4> [896.033449] i915_vma_pin+0xb36/0x11c0 [i915]
<4> [896.033488] gen6_ppgtt_pin+0xd5/0x170 [i915]
<4> [896.033523] ring_context_pin+0x2e/0xc0 [i915]
<4> [896.033554] __intel_context_do_pin+0x6b/0x190 [i915]
<4> [896.033591] i915_gem_do_execbuffer+0x1814/0x26c0 [i915]
<4> [896.033627] i915_gem_execbuffer2_ioctl+0x11b/0x460 [i915]
<4> [896.033632] drm_ioctl_kernel+0xa7/0xf0
<4> [896.033635] drm_ioctl+0x2e1/0x390
<4> [896.033638] do_vfs_ioctl+0xa0/0x6f0
<4> [896.033641] ksys_ioctl+0x35/0x60
<4> [896.033644] __x64_sys_ioctl+0x11/0x20
<4> [896.033647] do_syscall_64+0x4f/0x210
<4> [896.033650] entry_SYSCALL_64_after_hwframe+0x49/0xbe
Lift the object allocation and pin prior to the request construction.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191202204316.2665847-1-chris@chris-wilson.co.uk
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Some machines require ACPI for runtime resume, and ACPI is quite kmalloc
happy. We cannot handle kmalloc from inside the vm->mutex, as they are
used by the shrinker, and so we must ensure the global runtime-pm is
awake prior to unbinding to avoid the potential inversion.
<4> [57.121748] ======================================================
<4> [57.121750] WARNING: possible circular locking dependency detected
<4> [57.121753] 5.4.0-rc8-CI-CI_DRM_7466+ #1 Tainted: G U
<4> [57.121754] ------------------------------------------------------
<4> [57.121756] i915_pm_rpm/1105 is trying to acquire lock:
<4> [57.121758] ffffffff82263a40 (fs_reclaim){+.+.}, at: fs_reclaim_acquire.part.117+0x0/0x30
<4> [57.121766]
but task is already holding lock:
<4> [57.121768] ffff888475a593c0 (&vm->mutex){+.+.}, at: i915_vma_unbind+0x21/0x50 [i915]
<4> [57.121868]
which lock already depends on the new lock.
<4> [57.121869]
the existing dependency chain (in reverse order) is:
<4> [57.121871]
-> #1 (&vm->mutex){+.+.}:
<4> [57.121951] i915_gem_shrinker_taints_mutex+0xa2/0xd0 [i915]
<4> [57.122028] i915_address_space_init+0xa9/0x170 [i915]
<4> [57.122104] i915_ggtt_init_hw+0x47/0x130 [i915]
<4> [57.122150] i915_driver_probe+0xbb4/0x15f0 [i915]
<4> [57.122197] i915_pci_probe+0x43/0x1c0 [i915]
<4> [57.122202] pci_device_probe+0x9e/0x120
<4> [57.122206] really_probe+0xea/0x420
<4> [57.122209] driver_probe_device+0x10b/0x120
<4> [57.122212] device_driver_attach+0x4a/0x50
<4> [57.122214] __driver_attach+0x97/0x130
<4> [57.122217] bus_for_each_dev+0x74/0xc0
<4> [57.122220] bus_add_driver+0x142/0x220
<4> [57.122222] driver_register+0x56/0xf0
<4> [57.122226] do_one_initcall+0x58/0x2ff
<4> [57.122230] do_init_module+0x56/0x1f8
<4> [57.122233] load_module+0x243e/0x29f0
<4> [57.122236] __do_sys_finit_module+0xe9/0x110
<4> [57.122239] do_syscall_64+0x4f/0x210
<4> [57.122242] entry_SYSCALL_64_after_hwframe+0x49/0xbe
<4> [57.122244]
-> #0 (fs_reclaim){+.+.}:
<4> [57.122249] __lock_acquire+0x1328/0x15d0
<4> [57.122251] lock_acquire+0xa7/0x1c0
<4> [57.122254] fs_reclaim_acquire.part.117+0x24/0x30
<4> [57.122257] __kmalloc+0x48/0x320
<4> [57.122261] acpi_ns_internalize_name+0x44/0x9b
<4> [57.122264] acpi_ns_get_node_unlocked+0x6b/0xd3
<4> [57.122267] acpi_ns_get_node+0x3b/0x50
<4> [57.122271] acpi_get_handle+0x8a/0xb4
<4> [57.122274] acpi_has_method+0x1c/0x40
<4> [57.122278] acpi_pci_set_power_state+0x40/0xe0
<4> [57.122281] pci_platform_power_transition+0x3e/0x90
<4> [57.122284] pci_set_power_state+0x83/0xf0
<4> [57.122287] pci_restore_standard_config+0x22/0x40
<4> [57.122289] pci_pm_runtime_resume+0x23/0xc0
<4> [57.122293] __rpm_callback+0xb1/0x110
<4> [57.122296] rpm_callback+0x1a/0x70
<4> [57.122299] rpm_resume+0x50e/0x790
<4> [57.122302] __pm_runtime_resume+0x42/0x80
<4> [57.122357] __intel_runtime_pm_get+0x15/0x60 [i915]
<4> [57.122435] ggtt_unbind_vma+0x24/0x60 [i915]
<4> [57.122514] __i915_vma_unbind.part.39+0xb5/0x500 [i915]
<4> [57.122593] i915_vma_unbind+0x2d/0x50 [i915]
<4> [57.122668] i915_gem_object_unbind+0x11c/0x260 [i915]
<4> [57.122740] i915_gem_object_set_cache_level+0x32/0x90 [i915]
<4> [57.122810] i915_gem_set_caching_ioctl+0x1f7/0x2f0 [i915]
<4> [57.122815] drm_ioctl_kernel+0xa7/0xf0
<4> [57.122818] drm_ioctl+0x2e1/0x390
<4> [57.122822] do_vfs_ioctl+0xa0/0x6f0
<4> [57.122825] ksys_ioctl+0x35/0x60
<4> [57.122828] __x64_sys_ioctl+0x11/0x20
<4> [57.122830] do_syscall_64+0x4f/0x210
<4> [57.122833] entry_SYSCALL_64_after_hwframe+0x49/0xbe
Closes: https://gitlab.freedesktop.org/drm/intel/issues/711
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191203101347.2836057-1-chris@chris-wilson.co.uk
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As the i915_active.retire() may be running on another CPU as we detect
that the i915_active is idle, we may not wait for the retirement itself.
Wait for the remote callback by waiting for the retirement worker.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=112424
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191202140133.2444217-2-chris@chris-wilson.co.uk
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Similar to for i915_active.mutex, we require each class of i915_active
to have distinct lockdep chains as some, but by no means all,
i915_active are used within the shrinker and so have much more severe
usage constraints. By using a lockclass local to i915_active_init() all
i915_active workers have the same lock class, and we may generate false
positives when waiting for the i915_active. If we push the lockclass
into the caller, each class of i915_active will have distinct lockdep
chains.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Acked-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191202140133.2444217-1-chris@chris-wilson.co.uk
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Avoid dangerous race handling of destroyed vma by unbinding all vma
instead. Unfortunately, this stops us from trying to be clever and only
doing the minimal change required, so on first use of scanout we may
encounter an annoying stall as it transitions to a new cache level.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=112413
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191202174310.2630302-1-chris@chris-wilson.co.uk
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Quite simply we only need to check for prior corruption on enabling rc6
on module load and resume, so by hooking into the common entry points.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Acked-by: Andi Shyti <andi.shyti@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191202110836.2342685-2-chris@chris-wilson.co.uk
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Now that we have soft-rc6 in place, we can use that instead of the
forcewake to disable rc6 while active; preferred by a few
microbenchmarks.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Acked-by: Andi Shyti <andi.shyti@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191202110836.2342685-1-chris@chris-wilson.co.uk
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The unaligned ioread32() will make us read byte by byte looking for the
vbt. We could just as well have done a ioread8() + a shift and avoid the
extra confusion on how we are looking for "$VBT".
However when using ACPI it's guaranteed the VBT is 4-byte aligned
per spec, so we can probably assume it here as well.
v2: do not try to simplify the loop by eliminating the auxiliary counter
(Jani and Ville)
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191126225110.8127-4-lucas.demarchi@intel.com
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We don't need to keep the pci rom mapped during the entire
intel_bios_init() anymore. Move it to the previous copy_vbt() function
and rename it to oprom_get_vbt() since now it's responsible to to all
operations related to get the vbt from the oprom.
v2: fix double __iomem attribute detected by sparse
v3: fix missing unmap on success (Ville)
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191126225110.8127-3-lucas.demarchi@intel.com
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When we map the VBT through pci_map_rom() we may not be allowed
to simply discard the address space and go on reading the memory.
That doesn't work on my test system, but by dumping the rom via
sysfs I can can get the correct vbt. So change our find_vbt() to do
the same as done by pci_read_rom(), i.e. use memcpy_fromio().
v2: the just the minimal changes by not bothering with the unaligned io
reads: this can be done on top (from Ville and Jani)
v3: drop const in function return since now we are copying the vbt,
rather than just finding it
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191126225110.8127-2-lucas.demarchi@intel.com
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MST topology needs to be suspended so we don't have any calls to
fbdev after it's finalized. MST will be destroyed later as part of
drm_mode_config_cleanup().
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=109964
Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191127021609.162700-1-jose.souza@intel.com
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From VBT 228+ this is block that PSR and other power saving
features configuration should be read from.
v3:
Using DRRS from this new block
v4:
Using BIT()
Fixing DRRS comment in parse_power_conservation_features()
Cc: Matt Roper <matthew.d.roper@intel.com>
Cc: Gwan-gyeong Mun <gwan-gyeong.mun@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191128014852.214135-5-jose.souza@intel.com
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eDP specification states that sink can have its PSR capability
changed, I have never found any panel doing that but lets add that
for completeness.
For now it is not reading back the PSR capabilities and if possible
re-enabling PSR, this will be added if a panel is found using this
feature.
v4:
Cleaning DP_PSR_CAPS_CHANGE
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Cc: Gwan-gyeong Mun <gwan-gyeong.mun@intel.com>
Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191128014852.214135-4-jose.souza@intel.com
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When this error happens sink link is not stable after the required
FW_EXIT_LATENCY period so it will miss the selective update.
As the other PSR errors, for now we are not trying to recover from
it.
Cc: Gwan-gyeong Mun <gwan-gyeong.mun@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191128014852.214135-3-jose.souza@intel.com
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eDP spec states that when sink enconters a problem that prevents it
to keep PSR running it should set PSR status to internal error and
set the reason why it happen to PSR_ERROR_STATUS but it is not how it
was implemented.
But also I don't want to change this behavior, who knows if there is
a panel out there that only set the PSR_ERROR_STATUS.
So here refactoring the code a bit to make more easy to read what was
state above as more checks will be added to this function.
v2:
returning a int instead of a bool in psr_get_status_and_error_status()
Cc: Gwan-gyeong Mun <gwan-gyeong.mun@intel.com>
Cc: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191128014852.214135-2-jose.souza@intel.com
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PSR2 HW only support a limited number of bits per pixel, if mode has
more than supported PSR2 should not be enabled.
BSpec: 50422
BSpec: 7713
Cc: Gwan-gyeong Mun <gwan-gyeong.mun@intel.com>
Cc: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191128014852.214135-1-jose.souza@intel.com
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The "err" label is not really "err", but rather "out" since the return
path is shared between error condition and normal path. This broke when
commit 03cea61076f0 ("drm/i915/dsb: fix extra warning on error path
handling") added a "dsb->cmd_buf = NULL;" there, making DSB to stop
working since now all writes would pass-through via mmio.
Remove the set to NULL since it's actually not needed: we only set it if
all steps are successful. While at it, rename the label so this confusion
doesn't happen again.
Fixes: 03cea61076f0 ("drm/i915/dsb: fix extra warning on error path handling")
Resolves: https://gitlab.freedesktop.org/drm/intel/issues/8
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Reviewed-by: Animesh Manna <animesh.manna@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191127221119.384754-1-lucas.demarchi@intel.com
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i915_display_info
Migrate away from the legacy encoder->crtc and connector->encoder links
in the debugfs display_info code. Other users still remain so can't kill
these off yet.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191129185434.25549-10-ville.syrjala@linux.intel.com
Reviewed-by: Ramalingam C <ramalingam.c@intel.com>
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