OSDN Git Service
Chris Wilson [Sun, 6 Oct 2019 16:49:54 +0000 (17:49 +0100)]
drm/i915/gt: Treat a busy timeline as 'active' while waiting
If we cannot claim the timeline->mutex while preparing for a wait on it,
we have to skip the timeline. In doing so, treat it as active so that
under a intel_gt_wait_for_idle() loop, we repeat the wait after
scheduling away.
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/20191006165002.30312-4-chris@chris-wilson.co.uk
Chris Wilson [Fri, 4 Oct 2019 20:31:21 +0000 (21:31 +0100)]
drm/i915/selftests: Appease lockdep
Disable irqs around updating the context image to keep lockdep happy:
<4>[ 673.483340] WARNING: possible irq lock inversion dependency detected
<4>[ 673.483342] 5.4.0-rc1-CI-Trybot_5118+ #1 Tainted: G U
<4>[ 673.483342] --------------------------------------------------------
<4>[ 673.483343] swapper/2/0 just changed the state of lock:
<4>[ 673.483344]
ffff88845db885a0 (&i915_request_get(rq)->submit/1){-...}, at: __i915_sw_fence_complete+0x1b2/0x250 [i915]
<4>[ 673.483387] but this lock took another, HARDIRQ-unsafe lock in the past:
<4>[ 673.483388] (&ce->pin_mutex/2){+...}
<4>[ 673.483389]
and interrupts could create inverse lock ordering between them.
<4>[ 673.483390]
other info that might help us debug this:
<4>[ 673.483390] Chain exists of:
&i915_request_get(rq)->submit/1 --> &engine->active.lock --> &ce->pin_mutex/2
<4>[ 673.483392] Possible interrupt unsafe locking scenario:
<4>[ 673.483392] CPU0 CPU1
<4>[ 673.483393] ---- ----
<4>[ 673.483393] lock(&ce->pin_mutex/2);
<4>[ 673.483394] local_irq_disable();
<4>[ 673.483395] lock(&i915_request_get(rq)->submit/1);
<4>[ 673.483396] lock(&engine->active.lock);
<4>[ 673.483396] <Interrupt>
<4>[ 673.483397] lock(&i915_request_get(rq)->submit/1);
<4>[ 673.483398]
*** DEADLOCK ***
<4>[ 673.483398] 2 locks held by swapper/2/0:
<4>[ 673.483399] #0:
ffff8883f61ac9b0 (&(>->irq_lock)->rlock){-.-.}, at: gen11_gt_irq_handler+0x42/0x280 [i915]
<4>[ 673.483433] #1:
ffff88845db8c418 (&(&rq->lock)->rlock){-.-.}, at: intel_engine_breadcrumbs_irq+0x34a/0x5a0 [i915]
<4>[ 673.483463]
the shortest dependencies between 2nd lock and 1st lock:
<4>[ 673.483466] -> (&ce->pin_mutex/2){+...} ops: 614520 {
<4>[ 673.483468] HARDIRQ-ON-W at:
<4>[ 673.483471] lock_acquire+0xa7/0x1c0
<4>[ 673.483501] live_unlite_restore+0x1d8/0x6c0 [i915]
<4>[ 673.483543] __i915_subtests+0xb8/0x210 [i915]
<4>[ 673.483581] __run_selftests+0x112/0x170 [i915]
<4>[ 673.483615] i915_live_selftests+0x2c/0x60 [i915]
<4>[ 673.483644] i915_pci_probe+0x93/0x1b0 [i915]
<4>[ 673.483646] pci_device_probe+0x9e/0x120
<4>[ 673.483648] really_probe+0xea/0x420
<4>[ 673.483649] driver_probe_device+0x10b/0x120
<4>[ 673.483651] device_driver_attach+0x4a/0x50
<4>[ 673.483652] __driver_attach+0x97/0x130
<4>[ 673.483653] bus_for_each_dev+0x74/0xc0
<4>[ 673.483654] bus_add_driver+0x142/0x220
<4>[ 673.483655] driver_register+0x56/0xf0
<4>[ 673.483657] do_one_initcall+0x58/0x2ff
<4>[ 673.483659] do_init_module+0x56/0x1f8
<4>[ 673.483660] load_module+0x243e/0x29f0
<4>[ 673.483661] __do_sys_finit_module+0xe9/0x110
<4>[ 673.483662] do_syscall_64+0x4f/0x210
<4>[ 673.483665] entry_SYSCALL_64_after_hwframe+0x49/0xbe
<4>[ 673.483665] INITIAL USE at:
<4>[ 673.483667] lock_acquire+0xa7/0x1c0
<4>[ 673.483698] live_unlite_restore+0x1d8/0x6c0 [i915]
<4>[ 673.483733] __i915_subtests+0xb8/0x210 [i915]
<4>[ 673.483764] __run_selftests+0x112/0x170 [i915]
<4>[ 673.483793] i915_live_selftests+0x2c/0x60 [i915]
<4>[ 673.483821] i915_pci_probe+0x93/0x1b0 [i915]
<4>[ 673.483822] pci_device_probe+0x9e/0x120
<4>[ 673.483824] really_probe+0xea/0x420
<4>[ 673.483825] driver_probe_device+0x10b/0x120
<4>[ 673.483826] device_driver_attach+0x4a/0x50
<4>[ 673.483827] __driver_attach+0x97/0x130
<4>[ 673.483828] bus_for_each_dev+0x74/0xc0
<4>[ 673.483829] bus_add_driver+0x142/0x220
<4>[ 673.483830] driver_register+0x56/0xf0
<4>[ 673.483831] do_one_initcall+0x58/0x2ff
<4>[ 673.483833] do_init_module+0x56/0x1f8
<4>[ 673.483834] load_module+0x243e/0x29f0
<4>[ 673.483835] __do_sys_finit_module+0xe9/0x110
<4>[ 673.483836] do_syscall_64+0x4f/0x210
<4>[ 673.483837] entry_SYSCALL_64_after_hwframe+0x49/0xbe
<4>[ 673.483838] }
<4>[ 673.483868] ... key at: [<
ffffffffa0a8f132>] __key.70113+0x2/0xffffffffffef2ed0 [i915]
<4>[ 673.483869] ... acquired at:
<4>[ 673.483935] __execlists_reset+0xfb/0xc20 [i915]
<4>[ 673.483965] execlists_reset+0x3d/0x50 [i915]
<4>[ 673.483995] intel_engine_reset+0xdf/0x230 [i915]
<4>[ 673.484022] live_preempt_hang+0x1d7/0x2e0 [i915]
<4>[ 673.484064] __i915_subtests+0xb8/0x210 [i915]
<4>[ 673.484130] __run_selftests+0x112/0x170 [i915]
<4>[ 673.484163] i915_live_selftests+0x2c/0x60 [i915]
<4>[ 673.484193] i915_pci_probe+0x93/0x1b0 [i915]
<4>[ 673.484194] pci_device_probe+0x9e/0x120
<4>[ 673.484195] really_probe+0xea/0x420
<4>[ 673.484196] driver_probe_device+0x10b/0x120
<4>[ 673.484197] device_driver_attach+0x4a/0x50
<4>[ 673.484198] __driver_attach+0x97/0x130
<4>[ 673.484199] bus_for_each_dev+0x74/0xc0
<4>[ 673.484200] bus_add_driver+0x142/0x220
<4>[ 673.484202] driver_register+0x56/0xf0
<4>[ 673.484203] do_one_initcall+0x58/0x2ff
<4>[ 673.484204] do_init_module+0x56/0x1f8
<4>[ 673.484205] load_module+0x243e/0x29f0
<4>[ 673.484206] __do_sys_finit_module+0xe9/0x110
<4>[ 673.484207] do_syscall_64+0x4f/0x210
<4>[ 673.484208] entry_SYSCALL_64_after_hwframe+0x49/0xbe
<4>[ 673.484209] -> (&engine->active.lock){..-.} ops: 972791 {
<4>[ 673.484211] IN-SOFTIRQ-W at:
<4>[ 673.484213] lock_acquire+0xa7/0x1c0
<4>[ 673.484214] _raw_spin_lock_irqsave+0x33/0x50
<4>[ 673.484244] execlists_submission_tasklet+0xaf/0x100 [i915]
<4>[ 673.484246] tasklet_action_common.isra.18+0x6c/0x1c0
<4>[ 673.484247] __do_softirq+0xdf/0x47f
<4>[ 673.484248] irq_exit+0xba/0xc0
<4>[ 673.484249] do_IRQ+0x83/0x160
<4>[ 673.484250] ret_from_intr+0x0/0x1d
<4>[ 673.484252] cpuidle_enter_state+0xb2/0x450
<4>[ 673.484253] cpuidle_enter+0x24/0x40
<4>[ 673.484254] do_idle+0x1e7/0x250
<4>[ 673.484256] cpu_startup_entry+0x14/0x20
<4>[ 673.484257] start_secondary+0x15f/0x1b0
<4>[ 673.484258] secondary_startup_64+0xa4/0xb0
<4>[ 673.484259] INITIAL USE at:
<4>[ 673.484261] lock_acquire+0xa7/0x1c0
<4>[ 673.484290] intel_engine_init_active+0x7e/0xb0 [i915]
<4>[ 673.484305] intel_engines_setup+0x1cd/0x3b0 [i915]
<4>[ 673.484305] i915_gem_init+0x12d/0x900 [i915]
<4>[ 673.484305] i915_driver_probe+0xb70/0x15d0 [i915]
<4>[ 673.484305] i915_pci_probe+0x43/0x1b0 [i915]
<4>[ 673.484305] pci_device_probe+0x9e/0x120
<4>[ 673.484305] really_probe+0xea/0x420
<4>[ 673.484305] driver_probe_device+0x10b/0x120
<4>[ 673.484305] device_driver_attach+0x4a/0x50
<4>[ 673.484305] __driver_attach+0x97/0x130
<4>[ 673.484305] bus_for_each_dev+0x74/0xc0
<4>[ 673.484305] bus_add_driver+0x142/0x220
<4>[ 673.484305] driver_register+0x56/0xf0
<4>[ 673.484305] do_one_initcall+0x58/0x2ff
<4>[ 673.484305] do_init_module+0x56/0x1f8
<4>[ 673.484305] load_module+0x243e/0x29f0
<4>[ 673.484305] __do_sys_finit_module+0xe9/0x110
<4>[ 673.484305] do_syscall_64+0x4f/0x210
<4>[ 673.484305] entry_SYSCALL_64_after_hwframe+0x49/0xbe
<4>[ 673.484305] }
<4>[ 673.484305] ... key at: [<
ffffffffa0a8f160>] __key.70307+0x0/0xffffffffffef2ea0 [i915]
<4>[ 673.484305] ... acquired at:
<4>[ 673.484305] _raw_spin_lock_irqsave+0x33/0x50
<4>[ 673.484305] execlists_submit_request+0x2b/0x1e0 [i915]
<4>[ 673.484305] submit_notify+0xa8/0x13c [i915]
<4>[ 673.484305] __i915_sw_fence_complete+0x81/0x250 [i915]
<4>[ 673.484305] i915_sw_fence_wake+0x51/0x70 [i915]
<4>[ 673.484305] __i915_sw_fence_complete+0x1ee/0x250 [i915]
<4>[ 673.484305] dma_i915_sw_fence_wake+0x1b/0x30 [i915]
<4>[ 673.484305] dma_fence_signal_locked+0x9e/0x1b0
<4>[ 673.484305] dma_fence_signal+0x1f/0x40
<4>[ 673.484305] fence_work+0x28/0x80 [i915]
<4>[ 673.484305] process_one_work+0x26a/0x620
<4>[ 673.484305] worker_thread+0x37/0x380
<4>[ 673.484305] kthread+0x119/0x130
<4>[ 673.484305] ret_from_fork+0x24/0x50
<4>[ 673.484305] -> (&i915_request_get(rq)->submit/1){-...} ops: 857694 {
<4>[ 673.484305] IN-HARDIRQ-W at:
<4>[ 673.484305] lock_acquire+0xa7/0x1c0
<4>[ 673.484305] _raw_spin_lock_irqsave_nested+0x39/0x50
<4>[ 673.484305] __i915_sw_fence_complete+0x1b2/0x250 [i915]
<4>[ 673.484305] intel_engine_breadcrumbs_irq+0x3d0/0x5a0 [i915]
<4>[ 673.484305] cs_irq_handler+0x39/0x50 [i915]
<4>[ 673.484305] gen11_gt_irq_handler+0x17b/0x280 [i915]
<4>[ 673.484305] gen11_irq_handler+0x54/0xf0 [i915]
<4>[ 673.484305] __handle_irq_event_percpu+0x41/0x2c0
<4>[ 673.484305] handle_irq_event_percpu+0x2b/0x70
<4>[ 673.484305] handle_irq_event+0x2f/0x50
<4>[ 673.484305] handle_edge_irq+0x99/0x1b0
<4>[ 673.484305] do_IRQ+0x7e/0x160
<4>[ 673.484305] ret_from_intr+0x0/0x1d
<4>[ 673.484305] cpuidle_enter_state+0xb2/0x450
<4>[ 673.484305] cpuidle_enter+0x24/0x40
<4>[ 673.484305] do_idle+0x1e7/0x250
<4>[ 673.484305] cpu_startup_entry+0x14/0x20
<4>[ 673.484305] start_secondary+0x15f/0x1b0
<4>[ 673.484305] secondary_startup_64+0xa4/0xb0
<4>[ 673.484305] INITIAL USE at:
<4>[ 673.484305] lock_acquire+0xa7/0x1c0
<4>[ 673.484305] _raw_spin_lock_irqsave_nested+0x39/0x50
<4>[ 673.484305] __i915_sw_fence_complete+0x1b2/0x250 [i915]
<4>[ 673.484305] __engine_park+0x233/0x420 [i915]
<4>[ 673.484305] ____intel_wakeref_put_last+0x1c/0x70 [i915]
<4>[ 673.484305] intel_gt_resume+0x202/0x2c0 [i915]
<4>[ 673.484305] i915_gem_init+0x36e/0x900 [i915]
<4>[ 673.484305] i915_driver_probe+0xb70/0x15d0 [i915]
<4>[ 673.484305] i915_pci_probe+0x43/0x1b0 [i915]
<4>[ 673.484305] pci_device_probe+0x9e/0x120
<4>[ 673.484305] really_probe+0xea/0x420
<4>[ 673.484305] driver_probe_device+0x10b/0x120
<4>[ 673.484305] device_driver_attach+0x4a/0x50
<4>[ 673.484305] __driver_attach+0x97/0x130
<4>[ 673.484305] bus_for_each_dev+0x74/0xc0
<4>[ 673.484305] bus_add_driver+0x142/0x220
<4>[ 673.484305] driver_register+0x56/0xf0
<4>[ 673.484305] do_one_initcall+0x58/0x2ff
<4>[ 673.484305] do_init_module+0x56/0x1f8
<4>[ 673.484305] load_module+0x243e/0x29f0
<4>[ 673.484305] __do_sys_finit_module+0xe9/0x110
<4>[ 673.484305] do_syscall_64+0x4f/0x210
<4>[ 673.484305] entry_SYSCALL_64_after_hwframe+0x49/0xbe
<4>[ 673.484305] }
<4>[ 673.484305] ... key at: [<
ffffffffa0a8f6a1>] __key.80173+0x1/0xffffffffffef2960 [i915]
<4>[ 673.484305] ... acquired at:
<4>[ 673.484305] mark_lock+0x382/0x500
<4>[ 673.484305] __lock_acquire+0x7e1/0x15d0
<4>[ 673.484305] lock_acquire+0xa7/0x1c0
<4>[ 673.484305] _raw_spin_lock_irqsave_nested+0x39/0x50
<4>[ 673.484305] __i915_sw_fence_complete+0x1b2/0x250 [i915]
<4>[ 673.484305] intel_engine_breadcrumbs_irq+0x3d0/0x5a0 [i915]
<4>[ 673.484305] cs_irq_handler+0x39/0x50 [i915]
<4>[ 673.484305] gen11_gt_irq_handler+0x17b/0x280 [i915]
<4>[ 673.484305] gen11_irq_handler+0x54/0xf0 [i915]
<4>[ 673.484305] __handle_irq_event_percpu+0x41/0x2c0
<4>[ 673.484305] handle_irq_event_percpu+0x2b/0x70
<4>[ 673.484305] handle_irq_event+0x2f/0x50
<4>[ 673.484305] handle_edge_irq+0x99/0x1b0
<4>[ 673.484305] do_IRQ+0x7e/0x160
<4>[ 673.484305] ret_from_intr+0x0/0x1d
<4>[ 673.484305] cpuidle_enter_state+0xb2/0x450
<4>[ 673.484305] cpuidle_enter+0x24/0x40
<4>[ 673.484305] do_idle+0x1e7/0x250
<4>[ 673.484305] cpu_startup_entry+0x14/0x20
<4>[ 673.484305] start_secondary+0x15f/0x1b0
<4>[ 673.484305] secondary_startup_64+0xa4/0xb0
<4>[ 673.484305]
stack backtrace:
<4>[ 673.484305] CPU: 2 PID: 0 Comm: swapper/2 Tainted: G U 5.4.0-rc1-CI-Trybot_5118+ #1
<4>[ 673.484305] Hardware name: Intel Corporation Ice Lake Client Platform/IceLake U DDR4 SODIMM PD RVP TLC, BIOS ICLSFWR1.R00.3183.A00.
1905020411 05/02/2019
<4>[ 673.484305] Call Trace:
<4>[ 673.484305] <IRQ>
<4>[ 673.484305] dump_stack+0x67/0x9b
<4>[ 673.484305] check_usage_forwards+0x13c/0x150
<4>[ 673.484305] ? mark_lock+0x382/0x500
<4>[ 673.484305] mark_lock+0x382/0x500
<4>[ 673.484305] ? check_usage_backwards+0x140/0x140
<4>[ 673.484305] __lock_acquire+0x7e1/0x15d0
<4>[ 673.484305] ? debug_object_deactivate+0x17e/0x190
<4>[ 673.484305] lock_acquire+0xa7/0x1c0
<4>[ 673.484305] ? __i915_sw_fence_complete+0x1b2/0x250 [i915]
<4>[ 673.484305] _raw_spin_lock_irqsave_nested+0x39/0x50
<4>[ 673.484305] ? __i915_sw_fence_complete+0x1b2/0x250 [i915]
<4>[ 673.484305] __i915_sw_fence_complete+0x1b2/0x250 [i915]
<4>[ 673.484305] intel_engine_breadcrumbs_irq+0x3d0/0x5a0 [i915]
<4>[ 673.484305] cs_irq_handler+0x39/0x50 [i915]
<4>[ 673.484305] gen11_gt_irq_handler+0x17b/0x280 [i915]
<4>[ 673.484305] gen11_irq_handler+0x54/0xf0 [i915]
<4>[ 673.484305] __handle_irq_event_percpu+0x41/0x2c0
<4>[ 673.484305] handle_irq_event_percpu+0x2b/0x70
<4>[ 673.484305] handle_irq_event+0x2f/0x50
<4>[ 673.484305] handle_edge_irq+0x99/0x1b0
<4>[ 673.484305] do_IRQ+0x7e/0x160
<4>[ 673.484305] common_interrupt+0xf/0xf
<4>[ 673.484305] </IRQ>
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/20191004203121.31138-1-chris@chris-wilson.co.uk
Chris Wilson [Fri, 4 Oct 2019 19:47:58 +0000 (20:47 +0100)]
drm/i915/execlists: Fix annotation for decoupling virtual request
As we may signal a request and take the engine->active.lock within the
signaler, the engine submission paths have to use a nested annotation on
their requests -- but we guarantee that we can never submit on the same
engine as the signaling fence.
<4>[ 723.763281] WARNING: possible circular locking dependency detected
<4>[ 723.763285]
5.3.0-g80fa0e042cdb-drmtip_379+ #1 Tainted: G U
<4>[ 723.763288] ------------------------------------------------------
<4>[ 723.763291] gem_exec_await/1388 is trying to acquire lock:
<4>[ 723.763294]
ffff93a7b53221d8 (&engine->active.lock){..-.}, at: execlists_submit_request+0x2b/0x1e0 [i915]
<4>[ 723.763378]
but task is already holding lock:
<4>[ 723.763381]
ffff93a7c25f6d20 (&i915_request_get(rq)->submit/1){-.-.}, at: __i915_sw_fence_complete+0x1b2/0x250 [i915]
<4>[ 723.763420]
which lock already depends on the new lock.
<4>[ 723.763423]
the existing dependency chain (in reverse order) is:
<4>[ 723.763427]
-> #2 (&i915_request_get(rq)->submit/1){-.-.}:
<4>[ 723.763434] _raw_spin_lock_irqsave_nested+0x39/0x50
<4>[ 723.763478] __i915_sw_fence_complete+0x1b2/0x250 [i915]
<4>[ 723.763513] intel_engine_breadcrumbs_irq+0x3aa/0x5e0 [i915]
<4>[ 723.763600] cs_irq_handler+0x49/0x50 [i915]
<4>[ 723.763659] gen11_gt_irq_handler+0x17b/0x280 [i915]
<4>[ 723.763690] gen11_irq_handler+0x54/0xf0 [i915]
<4>[ 723.763695] __handle_irq_event_percpu+0x41/0x2d0
<4>[ 723.763699] handle_irq_event_percpu+0x2b/0x70
<4>[ 723.763702] handle_irq_event+0x2f/0x50
<4>[ 723.763706] handle_edge_irq+0xee/0x1a0
<4>[ 723.763709] do_IRQ+0x7e/0x160
<4>[ 723.763712] ret_from_intr+0x0/0x1d
<4>[ 723.763717] __slab_alloc.isra.28.constprop.33+0x4f/0x70
<4>[ 723.763720] kmem_cache_alloc+0x28d/0x2f0
<4>[ 723.763724] vm_area_dup+0x15/0x40
<4>[ 723.763727] dup_mm+0x2dd/0x550
<4>[ 723.763730] copy_process+0xf21/0x1ef0
<4>[ 723.763734] _do_fork+0x71/0x670
<4>[ 723.763737] __se_sys_clone+0x6e/0xa0
<4>[ 723.763741] do_syscall_64+0x4f/0x210
<4>[ 723.763744] entry_SYSCALL_64_after_hwframe+0x49/0xbe
<4>[ 723.763747]
-> #1 (&(&rq->lock)->rlock#2){-.-.}:
<4>[ 723.763752] _raw_spin_lock+0x2a/0x40
<4>[ 723.763789] __unwind_incomplete_requests+0x3eb/0x450 [i915]
<4>[ 723.763825] __execlists_submission_tasklet+0x9ec/0x1d60 [i915]
<4>[ 723.763864] execlists_submission_tasklet+0x34/0x50 [i915]
<4>[ 723.763874] tasklet_action_common.isra.5+0x47/0xb0
<4>[ 723.763878] __do_softirq+0xd8/0x4ae
<4>[ 723.763881] irq_exit+0xa9/0xc0
<4>[ 723.763883] smp_apic_timer_interrupt+0xb7/0x280
<4>[ 723.763887] apic_timer_interrupt+0xf/0x20
<4>[ 723.763892] cpuidle_enter_state+0xae/0x450
<4>[ 723.763895] cpuidle_enter+0x24/0x40
<4>[ 723.763899] do_idle+0x1e7/0x250
<4>[ 723.763902] cpu_startup_entry+0x14/0x20
<4>[ 723.763905] start_secondary+0x15f/0x1b0
<4>[ 723.763908] secondary_startup_64+0xa4/0xb0
<4>[ 723.763911]
-> #0 (&engine->active.lock){..-.}:
<4>[ 723.763916] __lock_acquire+0x15d8/0x1ea0
<4>[ 723.763919] lock_acquire+0xa6/0x1c0
<4>[ 723.763922] _raw_spin_lock_irqsave+0x33/0x50
<4>[ 723.763956] execlists_submit_request+0x2b/0x1e0 [i915]
<4>[ 723.764002] submit_notify+0xa8/0x13c [i915]
<4>[ 723.764035] __i915_sw_fence_complete+0x81/0x250 [i915]
<4>[ 723.764054] i915_sw_fence_wake+0x51/0x64 [i915]
<4>[ 723.764054] __i915_sw_fence_complete+0x1ee/0x250 [i915]
<4>[ 723.764054] dma_i915_sw_fence_wake_timer+0x14/0x20 [i915]
<4>[ 723.764054] dma_fence_signal_locked+0x9e/0x1c0
<4>[ 723.764054] dma_fence_signal+0x1f/0x40
<4>[ 723.764054] vgem_fence_signal_ioctl+0x67/0xc0 [vgem]
<4>[ 723.764054] drm_ioctl_kernel+0x83/0xf0
<4>[ 723.764054] drm_ioctl+0x2f3/0x3b0
<4>[ 723.764054] do_vfs_ioctl+0xa0/0x6f0
<4>[ 723.764054] ksys_ioctl+0x35/0x60
<4>[ 723.764054] __x64_sys_ioctl+0x11/0x20
<4>[ 723.764054] do_syscall_64+0x4f/0x210
<4>[ 723.764054] entry_SYSCALL_64_after_hwframe+0x49/0xbe
<4>[ 723.764054]
other info that might help us debug this:
<4>[ 723.764054] Chain exists of:
&engine->active.lock --> &(&rq->lock)->rlock#2 --> &i915_request_get(rq)->submit/1
<4>[ 723.764054] Possible unsafe locking scenario:
<4>[ 723.764054] CPU0 CPU1
<4>[ 723.764054] ---- ----
<4>[ 723.764054] lock(&i915_request_get(rq)->submit/1);
<4>[ 723.764054] lock(&(&rq->lock)->rlock#2);
<4>[ 723.764054] lock(&i915_request_get(rq)->submit/1);
<4>[ 723.764054] lock(&engine->active.lock);
<4>[ 723.764054]
*** DEADLOCK ***
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=111862
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/20191004194758.19679-1-chris@chris-wilson.co.uk
Chris Wilson [Mon, 7 Oct 2019 15:45:31 +0000 (16:45 +0100)]
drm/i915/gt: Prefer local path to runtime powermanagement
Avoid going to the base i915 device when we already have a path from gt
to the runtime powermanagement interface. The benefit is that it looks a
bit more self-consistent to always be acquiring the gt->uncore->rpm for
use with the gt->uncore.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191007154531.1750-1-chris@chris-wilson.co.uk
Colin Ian King [Mon, 7 Oct 2019 15:41:51 +0000 (16:41 +0100)]
drm/i915: make array hw_engine_mask static, makes object smaller
Don't populate the array hw_engine_mask on the stack but instead make it
static. Makes the object code smaller by 316 bytes.
Before:
text data bss dec hex filename
34004 4388 320 38712 9738 gpu/drm/i915/gt/intel_reset.o
After:
text data bss dec hex filename
33528 4548 320 38396 95fc gpu/drm/i915/gt/intel_reset.o
(gcc version 9.2.1, amd64)
Signed-off-by: Colin Ian King <colin.king@canonical.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/20191007154151.23245-1-colin.king@canonical.com
Matt Roper [Wed, 2 Oct 2019 19:22:58 +0000 (12:22 -0700)]
drm/i915/vbt: Child device size remains unchanged through VBT 229
The latest documented version of the VBT is 229, but no further data has
been added to the child device definition in block 2. Update the child
device version test to eliminate the "Expected child device config size
for VBT version XXX not known; assuming 39" debug messages from the
logs.
Bspec: 20124
Bspec: 20157
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191002192258.1013-1-matthew.d.roper@intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Lionel Landwerlin [Mon, 9 Sep 2019 09:31:09 +0000 (12:31 +0300)]
drm/i915/perf: move perf types to their own header
Following a pattern used throughout the driver.
Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Reviewed-by: Umesh Nerlige Ramappa <umesh.nerlige.ramappa@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190909093116.7747-7-lionel.g.landwerlin@intel.com
Chris Wilson [Sun, 6 Oct 2019 16:49:53 +0000 (17:49 +0100)]
drm/i915/gt: Restore dropped 'interruptible' flag
Lost in the rebasing was Tvrtko's reminder that we need to keep an
uninterruptible wait around for the Ironlake VT-d w/a
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/20191006165002.30312-3-chris@chris-wilson.co.uk
Joonas Lahtinen [Mon, 7 Oct 2019 12:24:47 +0000 (15:24 +0300)]
drm/i915: Update DRIVER_DATE to
20191007
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Jani Nikula [Fri, 4 Oct 2019 12:20:19 +0000 (15:20 +0300)]
drm/i915: move gmbus setup down to intel_modeset_init()
Pair the gmbus setup and teardown in the same layer. This also fixes the
double gmbus teardown on the i915_driver_modeset_probe() error path.
Move the gmbus setup a bit later in the sequence to make the follow-up
refactoring easier, and to pinpoint any unexpected consequences of this
change right here, instead of the later refactoring.
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191004122019.12009-3-jani.nikula@intel.com
Jani Nikula [Fri, 4 Oct 2019 12:20:18 +0000 (15:20 +0300)]
drm/i915: split out i915_switcheroo.[ch] from i915_drv.c
Split out code related to vga switcheroo register/unregister and state
handling from i915_drv.c into new i915_switcheroo.[ch] files.
It's a bit difficult to draw the line how much to move to the new file
from i915_drv.c, but it seemed to me keeping i915_suspend_switcheroo()
and i915_resume_switcheroo() in place was the cleanest.
No functional changes.
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191004122019.12009-2-jani.nikula@intel.com
Jani Nikula [Fri, 4 Oct 2019 12:20:17 +0000 (15:20 +0300)]
drm/i915/vga: rename intel_vga_msr_write() to intel_vga_reset_io_mem()
Rename the function per Ville's suggestion. No functional changes.
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Suggested-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191004122019.12009-1-jani.nikula@intel.com
CQ Tang [Fri, 4 Oct 2019 17:04:32 +0000 (18:04 +0100)]
drm/i915/stolen: make the object creation interface consistent
Our other backends return an actual error value upon failure. Do the
same for stolen objects, which currently just return NULL on failure.
Signed-off-by: CQ Tang <cq.tang@intel.com>
Signed-off-by: Matthew Auld <matthew.auld@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
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/20191004170452.15410-2-matthew.auld@intel.com
Ville Syrjälä [Thu, 3 Oct 2019 14:02:31 +0000 (17:02 +0300)]
drm/i915: Implement a better i945gm vblank irq vs. C-states workaround
The current "disable C3+" workaround for the delayed vblank
irqs on i945gm no longer works. I'm not sure what changed, but
now I need to also disable C2. I also got my hands on a i915gm
machine that suffers from the same issue.
After some furious poking of registers I managed to find a
better workaround: The "Do not Turn off Core Render Clock in C
states" bit. With that I no longer have to disable any C-states,
and as a nice bonus the power cost is only ~1/4 of the
"disable C3+" method (which mind you doesn't even work anymore,
and so would have an even higher power cost if we made it work
by also disabling C2).
So let's throw out all the cpuidle/qos crap and just toggle
the magic bit as needed. And we extend the workaround to cover
i915gm as well.
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191003140231.24408-1-ville.syrjala@linux.intel.com
Acked-by: Chris Wilson <chris@chris-wilson.co.uk>
Chris Wilson [Fri, 4 Oct 2019 13:40:15 +0000 (14:40 +0100)]
drm/i915: Drop struct_mutex from around GEM initialisation
We no longer need to placate lockdep by holding struct_mutex for our
initialisation, so don't.
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/20191004134015.13204-21-chris@chris-wilson.co.uk
Chris Wilson [Fri, 4 Oct 2019 13:40:14 +0000 (14:40 +0100)]
drm/i915/selftests: Drop vestigal struct_mutex guards
We no longer need struct_mutex to serialise request emission, so remove
it from the gt selftests.
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/20191004134015.13204-20-chris@chris-wilson.co.uk
Chris Wilson [Fri, 4 Oct 2019 13:40:13 +0000 (14:40 +0100)]
drm/i915: Drop struct_mutex from suspend state save/restore
struct_mutex provides no serialisation of the registers and data
structures being saved and restored across suspend/resume. It is
completely superfluous here.
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/20191004134015.13204-19-chris@chris-wilson.co.uk
Chris Wilson [Fri, 4 Oct 2019 13:40:12 +0000 (14:40 +0100)]
drm/i915: Remove struct_mutex guard for debugfs/opregion
Having a struct_mutex around the read of a BIOS blob serves no purpose.
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/20191004134015.13204-18-chris@chris-wilson.co.uk
Chris Wilson [Fri, 4 Oct 2019 13:40:11 +0000 (14:40 +0100)]
drm/i915: Drop struct_mutex guard from debugfs/framebuffer_info
It protects nothing being accessed for the intel_framebuffer, so it's
own locking had better be sufficient.
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/20191004134015.13204-17-chris@chris-wilson.co.uk
Chris Wilson [Fri, 4 Oct 2019 13:40:10 +0000 (14:40 +0100)]
drm/i915/overlay: Drop struct_mutex guard
The overlay uses the modeset mutex to control itself and only required
the struct_mutex for requests, which is now obsolete.
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/20191004134015.13204-16-chris@chris-wilson.co.uk
Chris Wilson [Fri, 4 Oct 2019 13:40:09 +0000 (14:40 +0100)]
drm/i915: Move context management under GEM
Keep track of the GEM contexts underneath i915->gem.contexts and assign
them their own lock for the purposes of list management.
v2: Focus on lock tracking; ctx->vm is protected by ctx->mutex
v3: Correct split with removal of logical HW ID
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/20191004134015.13204-15-chris@chris-wilson.co.uk
Chris Wilson [Fri, 4 Oct 2019 13:40:08 +0000 (14:40 +0100)]
drm/i915: Remove logical HW ID
With the introduction of ctx->engines[] we allow multiple logical
contexts to be used on the same engine (e.g. with virtual engines).
According to bspec, aach logical context requires a unique tag in order
for context-switching to occur correctly between them. [Simple
experiments show that it is not so easy to trick the HW into performing
a lite-restore with matching logical IDs, though my memory from early
Broadwell experiments do suggest that it should be generating
lite-restores.]
We only need to keep a unique tag for the active lifetime of the
context, and for as long as we need to identify that context. The HW
uses the tag to determine if it should use a lite-restore (why not the
LRCA?) and passes the tag back for various status identifies. The only
status we need to track is for OA, so when using perf, we assign the
specific context a unique tag.
v2: Calculate required number of tags to fill ELSP.
Fixes:
976b55f0e1db ("drm/i915: Allow a context to define its set of engines")
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=111895
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Acked-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191004134015.13204-14-chris@chris-wilson.co.uk
Chris Wilson [Fri, 4 Oct 2019 13:40:07 +0000 (14:40 +0100)]
drm/i915: Move global activity tracking from GEM to GT
As our global unpark/park keep track of the number of active users, we
can simply move the accounting from the GEM layer to the base GT layer.
It was placed originally inside GEM to benefit from the 100ms extra
delay on idleness, but that has been eliminated and now there is no
substantive difference between the layers. In moving it, we move another
piece of the puzzle out from underneath struct_mutex.
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/20191004134015.13204-13-chris@chris-wilson.co.uk
Chris Wilson [Fri, 4 Oct 2019 13:40:06 +0000 (14:40 +0100)]
drm/i915: Move request runtime management onto gt
Requests are run from the gt and are tided into the gt runtime power
management, so pull the runtime request management under gt/
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/20191004134015.13204-12-chris@chris-wilson.co.uk
Chris Wilson [Fri, 4 Oct 2019 13:40:05 +0000 (14:40 +0100)]
drm/i915/gem: Retire directly for mmap-offset shrinking
Now that we can retire without taking struct_mutex, we can do so to
handle shrinking the mmap-offset space after an allocation failure.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: Matthew Auld <matthew.auld@intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191004134015.13204-11-chris@chris-wilson.co.uk
Chris Wilson [Fri, 4 Oct 2019 13:40:04 +0000 (14:40 +0100)]
drm/i915: Merge wait_for_timelines with retire_request
wait_for_timelines is essentially the same loop as retiring requests
(with an extra timeout), so merge the two into one routine.
v2: i915_retire_requests_timeout and keep VT'd w/a as !interruptible
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/20191004134015.13204-10-chris@chris-wilson.co.uk
Chris Wilson [Fri, 4 Oct 2019 13:40:03 +0000 (14:40 +0100)]
drm/i915: Remove the GEM idle worker
Nothing inside the idle worker now requires struct_mutex, so we can
remove the indirection of using our own worker.
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/20191004134015.13204-9-chris@chris-wilson.co.uk
Chris Wilson [Fri, 4 Oct 2019 13:40:02 +0000 (14:40 +0100)]
drm/i915: Drop struct_mutex from around i915_retire_requests()
We don't need to hold struct_mutex now for retiring requests, so drop it
from i915_retire_requests() and i915_gem_wait_for_idle(), finally
removing I915_WAIT_LOCKED for good.
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/20191004134015.13204-8-chris@chris-wilson.co.uk
Chris Wilson [Fri, 4 Oct 2019 13:40:01 +0000 (14:40 +0100)]
drm/i915: Move idle barrier cleanup into engine-pm
Now that we now longer need to guarantee that the active callback is
under the struct_mutex, we can lift it out of the i915_gem_park() and
into the engine parking itself.
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/20191004134015.13204-7-chris@chris-wilson.co.uk
Chris Wilson [Fri, 4 Oct 2019 13:40:00 +0000 (14:40 +0100)]
drm/i915: Coordinate i915_active with its own mutex
Forgo the struct_mutex serialisation for i915_active, and interpose its
own mutex handling for active/retire.
This is a multi-layered sleight-of-hand. First, we had to ensure that no
active/retire callbacks accidentally inverted the mutex ordering rules,
nor assumed that they were themselves serialised by struct_mutex. More
challenging though, is the rule over updating elements of the active
rbtree. Instead of the whole i915_active now being serialised by
struct_mutex, allocations/rotations of the tree are serialised by the
i915_active.mutex and individual nodes are serialised by the caller
using the i915_timeline.mutex (we need to use nested spinlocks to
interact with the dma_fence callback lists).
The pain point here is that instead of a single mutex around execbuf, we
now have to take a mutex for active tracker (one for each vma, context,
etc) and a couple of spinlocks for each fence update. The improvement in
fine grained locking allowing for multiple concurrent clients
(eventually!) should be worth it in typical loads.
v2: Add some comments that barely elucidate anything :(
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/20191004134015.13204-6-chris@chris-wilson.co.uk
Chris Wilson [Fri, 4 Oct 2019 13:39:59 +0000 (14:39 +0100)]
drm/i915: Push the i915_active.retire into a worker
As we need to use a mutex to serialise i915_active activation
(because we want to allow the callback to sleep), we need to push the
i915_active.retire into a worker callback in case we get need to retire
from an atomic context.
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/20191004134015.13204-5-chris@chris-wilson.co.uk
Chris Wilson [Fri, 4 Oct 2019 13:39:58 +0000 (14:39 +0100)]
drm/i915: Pull i915_vma_pin under the vm->mutex
Replace the struct_mutex requirement for pinning the i915_vma with the
local vm->mutex instead. Note that the vm->mutex is tainted by the
shrinker (we require unbinding from inside fs-reclaim) and so we cannot
allocate while holding that mutex. Instead we have to preallocate
workers to do allocate and apply the PTE updates after we have we
reserved their slot in the drm_mm (using fences to order the PTE writes
with the GPU work and with later unbind).
In adding the asynchronous vma binding, one subtle requirement is to
avoid coupling the binding fence into the backing object->resv. That is
the asynchronous binding only applies to the vma timeline itself and not
to the pages as that is a more global timeline (the binding of one vma
does not need to be ordered with another vma, nor does the implicit GEM
fencing depend on a vma, only on writes to the backing store). Keeping
the vma binding distinct from the backing store timelines is verified by
a number of async gem_exec_fence and gem_exec_schedule tests. The way we
do this is quite simple, we keep the fence for the vma binding separate
and only wait on it as required, and never add it to the obj->resv
itself.
Another consequence in reducing the locking around the vma is the
destruction of the vma is no longer globally serialised by struct_mutex.
A natural solution would be to add a kref to i915_vma, but that requires
decoupling the reference cycles, possibly by introducing a new
i915_mm_pages object that is own by both obj->mm and vma->pages.
However, we have not taken that route due to the overshadowing lmem/ttm
discussions, and instead play a series of complicated games with
trylocks to (hopefully) ensure that only one destruction path is called!
v2: Add some commentary, and some helpers to reduce patch churn.
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/20191004134015.13204-4-chris@chris-wilson.co.uk
Chris Wilson [Fri, 4 Oct 2019 13:39:57 +0000 (14:39 +0100)]
drm/i915: Mark up address spaces that may need to allocate
Since we cannot allocate underneath the vm->mutex (it is used in the
direct-reclaim paths), we need to shift the allocations off into a
mutexless worker with fence recursion prevention. To know when we need
this protection, we mark up the address spaces that do allocate before
insertion. In the future, we may wish to extend the async bind scheme to
more than just allocations.
v2: s/vm->bind_alloc/vm->bind_async_flags/
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/20191004134015.13204-3-chris@chris-wilson.co.uk
Chris Wilson [Fri, 4 Oct 2019 13:39:56 +0000 (14:39 +0100)]
drm/i915: Only track bound elements of the GTT
The premise here is to simply avoiding having to acquire the vm->mutex
inside vma create/destroy to update the vm->unbound_lists, to avoid some
nasty lock recursions later.
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/20191004134015.13204-2-chris@chris-wilson.co.uk
Chris Wilson [Thu, 3 Oct 2019 21:00:58 +0000 (22:00 +0100)]
drm/i915: Use helpers for drm_mm_node booleans
A subset of
71724f708997 ("drm/mm: Use helpers for drm_mm_node booleans")
in order to prepare drm-intel-next-queued for subsequent patches before
we can backmerge
71724f708997 itself.
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/20191004142226.13711-1-chris@chris-wilson.co.uk
Chris Wilson [Fri, 4 Oct 2019 10:59:58 +0000 (11:59 +0100)]
drm/i915: Restrict L3 remapping sysfs interface to dwords
The L3 cache remapping is stored as u32 elements, and we should ensure
that the user only supplies complete slice information(u32).
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/20191004105958.1741-1-chris@chris-wilson.co.uk
Kai Vehmanen [Thu, 3 Oct 2019 08:55:31 +0000 (11:55 +0300)]
drm/i915: extend audio CDCLK>=2*BCLK constraint to more platforms
The CDCLK>=2*BCLK constraint applies to all generations since gen10.
Extend the constraint logic in audio get/put_power().
Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191003085531.30990-2-kai.vehmanen@linux.intel.com
Kai Vehmanen [Thu, 3 Oct 2019 08:55:30 +0000 (11:55 +0300)]
drm/i915: Fix audio power up sequence for gen10+ display
On platfroms with gen10+ display, driver must set the enable bit of
AUDIO_PIN_BUF_CTL register before transactions with the HDA controller
can proceed. Add setting this bit to the audio power up sequence.
Failing to do this resulted in errors during display audio codec probe,
and failures during resume from suspend.
Note: We may also need to disable the bit afterwards, but there are
still unresolved issues with that.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=111214
Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191003085531.30990-1-kai.vehmanen@linux.intel.com
Jani Nikula [Wed, 2 Oct 2019 14:41:38 +0000 (17:41 +0300)]
drm/i915/dp: remove static variable for aux last status
Add aux_busy_last_status to intel_dp. Don't bother with initializing to
all ones; the only difference is potentially missing logging for one
error case if the readout is all zeros.
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191002144138.7917-1-jani.nikula@intel.com
Chris Wilson [Thu, 3 Oct 2019 21:00:56 +0000 (22:00 +0100)]
drm/i915/execlists: Skip redundant resubmission
If we unwind the active requests, and on resubmission discover that we
intend to preempt the active contexts with themselves, simply skip the
ELSP submission.
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/20191003210100.22250-1-chris@chris-wilson.co.uk
Imre Deak [Wed, 2 Oct 2019 20:41:08 +0000 (23:41 +0300)]
drm/i915/tgl: Add the Thunderbolt PLL divider values
The Thunderbolt PLL divider values on TGL differ from the ICL ones,
update the PLL parameter calculation function accordingly.
Bspec: 49204
v2:
- Remove unused refclk config. (José)
Cc: Jose Souza <jose.souza@intel.com>
Cc: Clinton A Taylor <clinton.a.taylor@intel.com>
Cc: Lucas De Marchi <lucas.demarchi@intel.com>
Cc: Mika Westerberg <mika.westerberg@intel.com>
Tested-by: Mika Westerberg <mika.westerberg@intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Jose Souza <jose.souza@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191002204108.32242-1-imre.deak@intel.com
Jani Nikula [Wed, 2 Oct 2019 14:54:05 +0000 (17:54 +0300)]
drm/i915: use DRM_DEBUG_KMS() instead of drm_dbg(DRM_UT_KMS, ...)
Unify on current common usage to allow repurposing drm_dbg() later. Fix
newlines while at it.
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191002145405.27848-2-jani.nikula@intel.com
Jani Nikula [Wed, 2 Oct 2019 14:54:04 +0000 (17:54 +0300)]
drm/i915: use DRM_ERROR() instead of drm_err()
Unify on current common usage to allow repurposing drm_err() later. Fix
newlines while at it.
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191002145405.27848-1-jani.nikula@intel.com
Chris Wilson [Wed, 2 Oct 2019 18:34:59 +0000 (19:34 +0100)]
drm/i915/selftests: Exercise potential false lite-restore
If execlists's lite-restore is based on the common GEM context tag
rather than the per-intel_context LRCA, then a context switch between
two intel_contexts on the same engine derived from the same GEM context
will perform a lite-restore instead of a full context switch. We can
exploit this by poisoning the ringbuffer of the first context and trying
to trick a simple RING_TAIL update (i.e. lite-restore)
v2: Also check what happens if preempt ce[0] with ce[1] (both instances
on the same engine from the same parent context) [Tvrtko]
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/20191002183459.26614-1-chris@chris-wilson.co.uk
José Roberto de Souza [Tue, 1 Oct 2019 19:37:29 +0000 (12:37 -0700)]
drm/i915/mg: Use tc_port instead of port parameter to MG registers
All the MG registers is based on the tc_port not port, so
MG_PHY_PORT_LN() was subtracting port and PORT_C what is very
fragile.
So replacing port to tc_port in all MG register macros and users
like we have for DKL.
Cc: Lucas De Marchi <lucas.demarchi@intel.com>
Cc: Imre Deak <imre.deak@intel.com>
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191001193729.123736-1-jose.souza@intel.com
Ville Syrjälä [Mon, 8 Jul 2019 16:20:44 +0000 (19:20 +0300)]
drm/i915: Clean up encoder->crtc_mask setup
Use BIT(pipe) for better legibility when populating the crtc_mask
for encoders.
Also remove the redundant possible_crtcs setup for the TV encoder.
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190708162048.4286-11-ville.syrjala@linux.intel.com
Ville Syrjälä [Mon, 8 Jul 2019 16:20:42 +0000 (19:20 +0300)]
drm/i915: Populate possible_crtcs correctly
Don't advertize non-exisiting crtcs in the encoder possible_crtcs
bitmask.
Reviewed-by: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190708162048.4286-9-ville.syrjala@linux.intel.com
Chris Wilson [Wed, 2 Oct 2019 12:30:14 +0000 (13:30 +0100)]
drm/i915/gem: Refactor tests on obj->ops->flags
We repeat obj->ops->flags in our object checks, so pull that into its
own little helper for clarity.
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/20191002123014.1545-1-chris@chris-wilson.co.uk
Chris Wilson [Wed, 2 Oct 2019 12:24:30 +0000 (13:24 +0100)]
drm/i915/selftests: Extract random_offset() for use with a prng
For selftests, we desire repeatability and so prefer using a prng with
known seed over true randomness. Extract random_offset() as a selftest
utility that can take the prng state.
Suggested-by: Matthew Auld <matthew.auld@intel.com>
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/20191002122430.23205-1-chris@chris-wilson.co.uk
Ville Syrjälä [Mon, 30 Sep 2019 18:30:45 +0000 (21:30 +0300)]
drm/i915: Fix g4x sprite scaling stride check with GTT remapping
I forgot to update the g4x sprite scaling stride check when GTT
remapping was introduced. The stride of the original framebuffer
is irrelevant when remapping is used and instead we want to check
the stride of the remapped view.
Also drop the duplicate width_bytes check. We already check that
a few lines earlier.
Fixes:
df79cf441910 ("drm/i915: Store the final plane stride in plane_state")
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190930183045.662-1-ville.syrjala@linux.intel.com
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Ville Syrjälä [Tue, 1 Oct 2019 15:46:29 +0000 (18:46 +0300)]
drm/i915: Polish intel_tv_mode_valid()
Drop the tv_mode NULL check since intel_tv_mode_find() never
actually returns NULL, and flip the condition around so that
the MODE_OK case is at the end, which is customary to all
the other .mode_valid() implementations.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191001154629.11063-2-ville.syrjala@linux.intel.com
Reviewed-by: José Roberto de Souza <jose.souza@intel.com>
Ville Syrjälä [Tue, 1 Oct 2019 15:46:28 +0000 (18:46 +0300)]
drm/i915: Limit MST modes based on plane size too
When adding the max plane size checks to the .mode_valid() hooks
I naturally forgot about MST. Take care of that one as well.
Cc: Manasi Navare <manasi.d.navare@intel.com>
Cc: Sean Paul <sean@poorly.run>
Cc: José Roberto de Souza <jose.souza@intel.com>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Fixes:
2d20411e25a3 ("drm/i915: Don't advertise modes that exceed the max plane size")
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191001154629.11063-1-ville.syrjala@linux.intel.com
Reviewed-by: José Roberto de Souza <jose.souza@intel.com>
Jani Nikula [Tue, 1 Oct 2019 15:25:06 +0000 (18:25 +0300)]
drm/i915/display: abstract all vgaarb access to intel_vga.[ch]
Split out the code related to vga client and vgaarb all over the place
into new intel_vga.[ch]. No functional changes.
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191001152506.7854-1-jani.nikula@intel.com
Chris Wilson [Sat, 28 Sep 2019 08:25:46 +0000 (09:25 +0100)]
drm/i915/userptr: Never allow userptr into the mappable GGTT
Daniel Vetter uncovered a nasty cycle in using the mmu-notifiers to
invalidate userptr objects which also happen to be pulled into GGTT
mmaps. That is when we unbind the userptr object (on mmu invalidation),
we revoke all CPU mmaps, which may then recurse into mmu invalidation.
We looked for ways of breaking the cycle, but the revocation on
invalidation is required and cannot be avoided. The only solution we
could see was to not allow such GGTT bindings of userptr objects in the
first place. In practice, no one really wants to use a GGTT mmapping of
a CPU pointer...
Just before Daniel's explosive lockdep patches land in v5.4-rc1, we got
a genuine blip from CI:
<4>[ 246.793958] ======================================================
<4>[ 246.793972] WARNING: possible circular locking dependency detected
<4>[ 246.793989]
5.3.0-gbd6c56f50d15-drmtip_372+ #1 Tainted: G U
<4>[ 246.794003] ------------------------------------------------------
<4>[ 246.794017] kswapd0/145 is trying to acquire lock:
<4>[ 246.794030]
000000003f565be6 (&dev->struct_mutex/1){+.+.}, at: userptr_mn_invalidate_range_start+0x18f/0x220 [i915]
<4>[ 246.794250]
but task is already holding lock:
<4>[ 246.794263]
000000001799cef9 (&anon_vma->rwsem){++++}, at: page_lock_anon_vma_read+0xe6/0x2a0
<4>[ 246.794291]
which lock already depends on the new lock.
<4>[ 246.794307]
the existing dependency chain (in reverse order) is:
<4>[ 246.794322]
-> #3 (&anon_vma->rwsem){++++}:
<4>[ 246.794344] down_write+0x33/0x70
<4>[ 246.794357] __vma_adjust+0x3d9/0x7b0
<4>[ 246.794370] __split_vma+0x16a/0x180
<4>[ 246.794385] mprotect_fixup+0x2a5/0x320
<4>[ 246.794399] do_mprotect_pkey+0x208/0x2e0
<4>[ 246.794413] __x64_sys_mprotect+0x16/0x20
<4>[ 246.794429] do_syscall_64+0x55/0x1c0
<4>[ 246.794443] entry_SYSCALL_64_after_hwframe+0x49/0xbe
<4>[ 246.794456]
-> #2 (&mapping->i_mmap_rwsem){++++}:
<4>[ 246.794478] down_write+0x33/0x70
<4>[ 246.794493] unmap_mapping_pages+0x48/0x130
<4>[ 246.794519] i915_vma_revoke_mmap+0x81/0x1b0 [i915]
<4>[ 246.794519] i915_vma_unbind+0x11d/0x4a0 [i915]
<4>[ 246.794519] i915_vma_destroy+0x31/0x300 [i915]
<4>[ 246.794519] __i915_gem_free_objects+0xb8/0x4b0 [i915]
<4>[ 246.794519] drm_file_free.part.0+0x1e6/0x290
<4>[ 246.794519] drm_release+0xa6/0xe0
<4>[ 246.794519] __fput+0xc2/0x250
<4>[ 246.794519] task_work_run+0x82/0xb0
<4>[ 246.794519] do_exit+0x35b/0xdb0
<4>[ 246.794519] do_group_exit+0x34/0xb0
<4>[ 246.794519] __x64_sys_exit_group+0xf/0x10
<4>[ 246.794519] do_syscall_64+0x55/0x1c0
<4>[ 246.794519] entry_SYSCALL_64_after_hwframe+0x49/0xbe
<4>[ 246.794519]
-> #1 (&vm->mutex){+.+.}:
<4>[ 246.794519] i915_gem_shrinker_taints_mutex+0x6d/0xe0 [i915]
<4>[ 246.794519] i915_address_space_init+0x9f/0x160 [i915]
<4>[ 246.794519] i915_ggtt_init_hw+0x55/0x170 [i915]
<4>[ 246.794519] i915_driver_probe+0xc9f/0x1620 [i915]
<4>[ 246.794519] i915_pci_probe+0x43/0x1b0 [i915]
<4>[ 246.794519] pci_device_probe+0x9e/0x120
<4>[ 246.794519] really_probe+0xea/0x3d0
<4>[ 246.794519] driver_probe_device+0x10b/0x120
<4>[ 246.794519] device_driver_attach+0x4a/0x50
<4>[ 246.794519] __driver_attach+0x97/0x130
<4>[ 246.794519] bus_for_each_dev+0x74/0xc0
<4>[ 246.794519] bus_add_driver+0x13f/0x210
<4>[ 246.794519] driver_register+0x56/0xe0
<4>[ 246.794519] do_one_initcall+0x58/0x300
<4>[ 246.794519] do_init_module+0x56/0x1f6
<4>[ 246.794519] load_module+0x25bd/0x2a40
<4>[ 246.794519] __se_sys_finit_module+0xd3/0xf0
<4>[ 246.794519] do_syscall_64+0x55/0x1c0
<4>[ 246.794519] entry_SYSCALL_64_after_hwframe+0x49/0xbe
<4>[ 246.794519]
-> #0 (&dev->struct_mutex/1){+.+.}:
<4>[ 246.794519] __lock_acquire+0x15d8/0x1e90
<4>[ 246.794519] lock_acquire+0xa6/0x1c0
<4>[ 246.794519] __mutex_lock+0x9d/0x9b0
<4>[ 246.794519] userptr_mn_invalidate_range_start+0x18f/0x220 [i915]
<4>[ 246.794519] __mmu_notifier_invalidate_range_start+0x85/0x110
<4>[ 246.794519] try_to_unmap_one+0x76b/0x860
<4>[ 246.794519] rmap_walk_anon+0x104/0x280
<4>[ 246.794519] try_to_unmap+0xc0/0xf0
<4>[ 246.794519] shrink_page_list+0x561/0xc10
<4>[ 246.794519] shrink_inactive_list+0x220/0x440
<4>[ 246.794519] shrink_node_memcg+0x36e/0x740
<4>[ 246.794519] shrink_node+0xcb/0x490
<4>[ 246.794519] balance_pgdat+0x241/0x580
<4>[ 246.794519] kswapd+0x16c/0x530
<4>[ 246.794519] kthread+0x119/0x130
<4>[ 246.794519] ret_from_fork+0x24/0x50
<4>[ 246.794519]
other info that might help us debug this:
<4>[ 246.794519] Chain exists of:
&dev->struct_mutex/1 --> &mapping->i_mmap_rwsem --> &anon_vma->rwsem
<4>[ 246.794519] Possible unsafe locking scenario:
<4>[ 246.794519] CPU0 CPU1
<4>[ 246.794519] ---- ----
<4>[ 246.794519] lock(&anon_vma->rwsem);
<4>[ 246.794519] lock(&mapping->i_mmap_rwsem);
<4>[ 246.794519] lock(&anon_vma->rwsem);
<4>[ 246.794519] lock(&dev->struct_mutex/1);
<4>[ 246.794519]
*** DEADLOCK ***
v2: Say no to mmap_ioctl
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=111744
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=111870
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: stable@vger.kernel.org
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190928082546.3473-1-chris@chris-wilson.co.uk
Srinivasan S [Wed, 25 Sep 2019 00:35:42 +0000 (06:05 +0530)]
drm/i915/dp: Fix DP MST error after unplugging TypeC cable
This patch avoids DP MST payload error message in dmesg, as it is trying
to update the payload to the disconnected DP MST device. After DP MST
device is disconnected we should not be updating the payload and
hence remove the error.
v2: Removed the connector status check and converted from error to debug.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=111632
Signed-off-by: Srinivasan S <srinivasan.s@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1569371742-109402-1-git-send-email-srinivasan.s@intel.com
Chris Wilson [Tue, 1 Oct 2019 10:35:18 +0000 (11:35 +0100)]
drm/i915: Initialise breadcrumb lists on the virtual engine
With deferring the breadcrumb signalling to the virtual engine (thanks
preempt-to-busy) we need to make sure the lists and irq-worker are ready
to send a signal.
[41958.710544] BUG: kernel NULL pointer dereference, address:
0000000000000000
[41958.710553] #PF: supervisor write access in kernel mode
[41958.710556] #PF: error_code(0x0002) - not-present page
[41958.710558] PGD 0 P4D 0
[41958.710562] Oops: 0002 [#1] SMP
[41958.710565] CPU: 0 PID: 0 Comm: swapper/0 Tainted: G U 5.3.0+ #207
[41958.710568] Hardware name: Intel Corporation NUC7i5BNK/NUC7i5BNB, BIOS BNKBL357.86A.0052.2017.0918.1346 09/18/2017
[41958.710602] RIP: 0010:i915_request_enable_breadcrumb+0xe1/0x130 [i915]
[41958.710605] Code: 8b 44 24 30 48 89 41 08 48 89 08 48 8b 85 98 01 00 00 48 8d 8d 90 01 00 00 48 89 95 98 01 00 00 49 89 4c 24 28 49 89 44 24 30 <48> 89 10 f0 80 4b 30 10 c6 85 88 01 00 00 00 e9 1a ff ff ff 48 83
[41958.710609] RSP: 0018:
ffffc90000003de0 EFLAGS:
00010046
[41958.710612] RAX:
0000000000000000 RBX:
ffff888735424480 RCX:
ffff8887cddb2190
[41958.710614] RDX:
ffff8887cddb3570 RSI:
ffff888850362190 RDI:
ffff8887cddb2188
[41958.710617] RBP:
ffff8887cddb2000 R08:
ffff8888503624a8 R09:
0000000000000100
[41958.710619] R10:
0000000000000001 R11:
0000000000000000 R12:
ffff8887cddb3548
[41958.710622] R13:
0000000000000000 R14:
0000000000000046 R15:
ffff888850362070
[41958.710625] FS:
0000000000000000(0000) GS:
ffff88885ea00000(0000) knlGS:
0000000000000000
[41958.710628] CS: 0010 DS: 0000 ES: 0000 CR0:
0000000080050033
[41958.710630] CR2:
0000000000000000 CR3:
0000000002c09002 CR4:
00000000001606f0
[41958.710633] Call Trace:
[41958.710636] <IRQ>
[41958.710668] __i915_request_submit+0x12b/0x160 [i915]
[41958.710693] virtual_submit_request+0x67/0x120 [i915]
[41958.710720] __unwind_incomplete_requests+0x131/0x170 [i915]
[41958.710744] execlists_dequeue+0xb40/0xe00 [i915]
[41958.710771] execlists_submission_tasklet+0x10f/0x150 [i915]
[41958.710776] tasklet_action_common.isra.17+0x41/0xa0
[41958.710781] __do_softirq+0xc8/0x221
[41958.710785] irq_exit+0xa6/0xb0
[41958.710788] smp_apic_timer_interrupt+0x4d/0x80
[41958.710791] apic_timer_interrupt+0xf/0x20
[41958.710794] </IRQ>
Fixes:
cb2377a919bb ("drm/i915: Fixup preempt-to-busy vs reset of a virtual request")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191001103518.9113-1-chris@chris-wilson.co.uk
Chris Wilson [Fri, 27 Sep 2019 16:03:35 +0000 (17:03 +0100)]
drm/i915/gt: Only unwedge if we can reset first
Unwedging the GPU requires a successful GPU reset before we restore the
default submission, or else we may see residual context switch events
that we were not expecting.
v2: Pull in the special-case reset_clobbers_display, and explain why it
should be safe in the context of unwedging.
v3: Just forget all about resets before unwedging if it will clobber the
display; risk it all.
Reported-by: Janusz Krzysztofik <janusz.krzysztofik@linux.intel.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Janusz Krzysztofik <janusz.krzysztofik@linux.intel.com>
Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com> #v1
Link: https://patchwork.freedesktop.org/patch/msgid/20190927160335.10622-1-chris@chris-wilson.co.uk
Chris Wilson [Mon, 30 Sep 2019 14:49:19 +0000 (15:49 +0100)]
drm/i915/selftests: Exercise context switching in parallel
We currently test context switching on each engine as a basic stress
test (just verifying that nothing explodes if we execute 2 requests from
different contexts sequentially). What we have not tested is what
happens if we try and do so on all available engines simultaneously,
putting our SW and the HW under the maximal stress.
v2: Clone the set of engines from the first context into the secondary
contexts.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190930144919.27992-1-chris@chris-wilson.co.uk
Chris Wilson [Fri, 27 Sep 2019 21:17:49 +0000 (22:17 +0100)]
drm/i915/selftests: Provide a mock GPU reset routine
For those mock tests that may wish to pretend triggering a GPU reset and
processing the cleanup.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Andi Shyti <andi.shyti@intel.com>
Reviewed-by: Andi Shyti <andi.shyti@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190927211749.2181-3-chris@chris-wilson.co.uk
Chris Wilson [Fri, 27 Sep 2019 21:17:48 +0000 (22:17 +0100)]
drm/i915/selftests: Distinguish mock device from no wakeref
On systems that have no runtime-pm, we mark the wakeref as being -1. We
therefore cannot use that value for the mock-gt indicator, so opt for
-ENODEV instead. The wakeref should never be an error value -- one
hopes!
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Andi Shyti <andi.shyti@intel.com>
Reviewed-by: Andi Shyti <andi.shyti@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190927211749.2181-2-chris@chris-wilson.co.uk
Chris Wilson [Fri, 27 Sep 2019 21:17:47 +0000 (22:17 +0100)]
drm/i915: Pass intel_gt to has-reset?
As we execute GPU resets on a gt/ basis, and use the intel_gt as the
primary for all other reset functions, also use it for the has-reset?
predicates. Gradually simplifying the churn of pointers.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Andi Shyti <andi.shyti@intel.com>
Reviewed-by: Andi Shyti <andi.shyti@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190927211749.2181-1-chris@chris-wilson.co.uk
Chris Wilson [Fri, 27 Sep 2019 21:06:46 +0000 (22:06 +0100)]
drm/i915/selftests: Do not try to sanitize mock HW
If we are mocking the device, skip trying to sanitize the pm HW state.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Andi Shyti <andi.shyti@intel.com>
Reviewed-by: Andi Shyti <andi.shyti@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190927210646.29664-1-chris@chris-wilson.co.uk
Matthew Auld [Fri, 27 Sep 2019 17:33:49 +0000 (18:33 +0100)]
drm/i915: simplify i915_gem_init_early
i915_gem_init_early doesn't need to return anything.
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/20190927173409.31175-3-matthew.auld@intel.com
Matthew Auld [Fri, 27 Sep 2019 17:33:48 +0000 (18:33 +0100)]
drm/i915: check for kernel_context
Explosions during early driver init on the error path. Make sure we fail
gracefully.
[ 9547.672258] BUG: kernel NULL pointer dereference, address:
000000000000007c
[ 9547.672288] #PF: supervisor read access in kernel mode
[ 9547.672292] #PF: error_code(0x0000) - not-present page
[ 9547.672296] PGD
8000000846b41067 P4D
8000000846b41067 PUD
797034067 PMD 0
[ 9547.672303] Oops: 0000 [#1] SMP PTI
[ 9547.672307] CPU: 1 PID: 25634 Comm: i915_selftest Tainted: G U 5.3.0-rc8+ #73
[ 9547.672313] Hardware name: /NUC6i7KYB, BIOS KYSKLi70.86A.0050.2017.0831.1924 08/31/2017
[ 9547.672395] RIP: 0010:intel_context_unpin+0x9/0x100 [i915]
[ 9547.672400] Code: 6b 60 00 e9 17 ff ff ff bd fc ff ff ff e9 7c ff ff ff 66 66 2e 0f 1f 84 00 00 00 00
00 0f 1f 40 00 0f 1f 44 00 00 41 54 55 53 <8b> 47 7c 83 f8 01 74 26 8d 48 ff f0 0f b1 4f 7c 48 8d 57 7c
75 05
[ 9547.672413] RSP: 0018:
ffffae8ac24ff878 EFLAGS:
00010246
[ 9547.672417] RAX:
ffff944a1b7842d0 RBX:
ffff944a1b784000 RCX:
ffff944a12dd6fa8
[ 9547.672422] RDX:
ffff944a1b7842c0 RSI:
ffff944a12dd5328 RDI:
0000000000000000
[ 9547.672428] RBP:
0000000000000000 R08:
ffff944a11e5d840 R09:
0000000000000000
[ 9547.672433] R10:
0000000000000000 R11:
0000000000000000 R12:
0000000000000000
[ 9547.672438] R13:
ffffffffc11aaf00 R14:
00000000ffffffe4 R15:
ffff944a0e29bf38
[ 9547.672443] FS:
00007fc259b88ac0(0000) GS:
ffff944a1f880000(0000) knlGS:
0000000000000000
[ 9547.672449] CS: 0010 DS: 0000 ES: 0000 CR0:
0000000080050033
[ 9547.672454] CR2:
000000000000007c CR3:
0000000853346003 CR4:
00000000003606e0
[ 9547.672459] DR0:
0000000000000000 DR1:
0000000000000000 DR2:
0000000000000000
[ 9547.672464] DR3:
0000000000000000 DR6:
00000000fffe0ff0 DR7:
0000000000000400
[ 9547.672469] Call Trace:
[ 9547.672518] intel_engine_cleanup_common+0xe3/0x270 [i915]
[ 9547.672567] execlists_destroy+0xe/0x30 [i915]
[ 9547.672669] intel_engines_init+0x94/0xf0 [i915]
[ 9547.672749] i915_gem_init+0x191/0x950 [i915]
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/20190927173409.31175-2-matthew.auld@intel.com
Lucas De Marchi [Thu, 26 Sep 2019 21:06:59 +0000 (14:06 -0700)]
drm/i915/tgl: initialize TC and TBT ports
Now that TC support was added, initialize DDIs.
Reviewed-by: José Roberto de Souza <jose.souza@intel.com>
Acked-by: Lucas De Marchi <lucas.demarchi@intel.com>
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190926210659.56317-4-jose.souza@intel.com
José Roberto de Souza [Thu, 26 Sep 2019 21:06:58 +0000 (14:06 -0700)]
drm/i915/tgl: Fix dkl link training
Link training is failling when running link at 2.7GHz and 1.62GHz and
following BSpec pll algorithm.
Comparing the values calculated and the ones from the reference table
it looks like MG_CLKTOP2_CORECLKCTL1_A_DIVRATIO should not always set
to 5. For DP ports ICL mg pll algorithm sets it to 10 or 5 based on
div2 value, that matches with dkl hardcoded table.
So implementing this way as it proved to work in HW and leaving a
comment so we know why it do not match BSpec.
v4:
Using the same is_dp check as ICL, need testing on HDMI over tc port
Issue reported on BSpec 49204.
Reviewed-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190926210659.56317-3-jose.souza@intel.com
Clinton A Taylor [Thu, 26 Sep 2019 21:06:57 +0000 (14:06 -0700)]
drm/i915/tgl: Add dkl phy programming sequences
Added DKL Phy sequences and helpers functions to program voltage
swing, clock gating and dp mode.
It is not written in DP enabling sequence but "PHY Clockgating
programming" states that clock gating should be enabled after the
link training but doing so causes all the following trainings to fail
so not enabling it for.
v2:
Setting the right HIP_INDEX_REG bits (José)
v3:
Adding the meaning of each column of tgl_dkl_phy_ddi_translations
Adding if gen >= 12 on intel_ddi_hdmi_level() and
intel_ddi_pre_enable_hdmi() instead of reuse part of gen >= 11 if
v4:
Moved the DP_MODE lane programing to another patch as ICL also
needed it
Sharing icl_phy_set_clock_gating() and icl_program_mg_dp_mode() with
TGL as bits and programing as now it almost identical to ICL
BSpec: 49292
BSpec: 49190
Cc: Imre Deak <imre.deak@intel.com>
Cc: Lucas De Marchi <lucas.demarchi@intel.com>
Reviewed-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
Signed-off-by: Clinton A Taylor <clinton.a.taylor@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190926210659.56317-2-jose.souza@intel.com
Clinton A Taylor [Thu, 26 Sep 2019 21:06:56 +0000 (14:06 -0700)]
drm/i915/tc: Update DP_MODE programming
BSpec was updated(r146548) with a new MG_DP_MODE Programming table,
now taking in consideration the pin assignment and allowing us to
optimize power by shutting down available but not needed lanes.
It was tested on ICL and TGL, with adaptors that used pin assignment
C and B, reversing the connector and going to different modes testing
the not needed lane shutdown.
v5:
Using crtc_state->lane_count instead of dp.lane_count
BSpec: 21735
BSpec: 49292
Cc: Imre Deak <imre.deak@intel.com>
Cc: Lucas De Marchi <lucas.demarchi@intel.com>
Reviewed-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Clinton A Taylor <clinton.a.taylor@intel.com>
Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190926210659.56317-1-jose.souza@intel.com
Anusha Srivatsa [Wed, 25 Sep 2019 20:12:50 +0000 (13:12 -0700)]
drm/i915/dmc: Update ICL DMC version to v1.09
We have a new version of DMC for ICL - v1.09.
This version adds the Half Refresh Rate capability
into DMC.
Cc: José Roberto de Souza <jose.souza@intel.com>
Signed-off-by: Anusha Srivatsa <anusha.srivatsa@intel.com>
Reviewed-by: José Roberto de Souza <jose.souza@intel.com>
Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190925201250.18136-1-daniele.ceraolospurio@intel.com
Daniele Ceraolo Spurio [Wed, 25 Sep 2019 22:21:21 +0000 (15:21 -0700)]
drm/i915/huc: fix version parsing from CSS header
The HuC FW has silently switched to encoding the version the same way as
the GuC FW does, i.e. major.minor.patch instead of just major.minor. All
the current blobs follow the new scheme, but since minor and patch are
both zero there is no difference in the end results and we happily load
them. New binaries, however, will have non-zero values in there, so we
need to make sure to parse them correctly.
Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Cc: Anusha Srivatsa <anusha.srivatsa@intel.com>
Cc: Michal Wajdeczko <michal.wajdeczko@intel.com>
Reviewed-by: Stuart Summers <stuart.summers@intel.com>
Acked-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190925222121.4000-1-daniele.ceraolospurio@intel.com
Joonas Lahtinen [Fri, 27 Sep 2019 12:25:54 +0000 (15:25 +0300)]
drm/i915: Update DRIVER_DATE to
20190927
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Andi Shyti [Fri, 27 Sep 2019 11:08:49 +0000 (12:08 +0100)]
drm/i915: Extract GT render sleep (rc6) management
Continuing the theme of breaking intel_pm.c up in a reasonable chunk of
powermanagement utilities, pull out the rc6 setup into its GT handler.
Based on a patch by Chris Wilson.
Signed-off-by: Andi Shyti <andi.shyti@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
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/20190919143840.20384-1-andi.shyti@intel.com
Link: https://patchwork.freedesktop.org/patch/msgid/20190927110849.28734-1-chris@chris-wilson.co.uk
Chris Wilson [Wed, 25 Sep 2019 19:34:46 +0000 (20:34 +0100)]
drm/i915/selftests: Exercise concurrent submission to all engines
The simplest and most maximal submission we can do, a thread to submit
requests unto each engine.
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/20190925193446.26007-1-chris@chris-wilson.co.uk
Michał Winiarski [Thu, 26 Sep 2019 10:06:33 +0000 (12:06 +0200)]
drm/i915: Add definitions for MI_MATH command
We can use it in i915 for updating parts of unmasked registers from
within a batch. We're also adding Gen8+ versions of CS_GPR registers
(aka MI_MATH_REG in the coprocessor).
Signed-off-by: Michał Winiarski <michal.winiarski@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
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/20190926100635.9416-4-michal.winiarski@intel.com
Anna Karas [Thu, 26 Sep 2019 12:21:58 +0000 (15:21 +0300)]
drm/i915/perf: Fix use of kernel-doc format in structure members
Insert structure members names into their descriptions to follow
kernel-doc format.
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Anna Karas <anna.karas@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Acked-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20190926122158.13028-1-anna.karas@intel.com
Sebastian Andrzej Siewior [Thu, 26 Sep 2019 10:56:43 +0000 (12:56 +0200)]
drm/i915: Don't disable interrupts for intel_engine_breadcrumbs_irq()
The function intel_engine_breadcrumbs_irq() is always invoked from an interrupt
handler and for that reason it invokes (as an optimisation) only spin_lock()
for locking assuming that the interrupts are already disabled. The
function intel_engine_signal_breadcrumbs() is provided to disable
interrupts while the former function is invoked so that assumption is
also true for callers from preemptible context.
On PREEMPT_RT local_irq_disable() really disables interrupts and this
forbids to invoke spin_lock() which becomes a sleeping spinlock.
This is also problematic with `threadirqs' in conjunction with
irq_work. With force threading the interrupt handler, the handler is
invoked with disabled BH but with interrupts enabled. This is okay and
the lock itself is never acquired in IRQ context. This changes with
irq_work (signal_irq_work()) which _still_ invokes
intel_engine_breadcrumbs_irq() from IRQ context. Lockdep should see this
and complain.
Acquire the locks in intel_engine_breadcrumbs_irq() with _irqsave()
suffix and let all callers invoke intel_engine_breadcrumbs_irq()
directly instead using intel_engine_signal_breadcrumbs().
Reported-by: Clark Williams <williams@redhat.com>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
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/20190926105644.16703-2-bigeasy@linutronix.de
Sebastian Andrzej Siewior [Thu, 26 Sep 2019 10:56:44 +0000 (12:56 +0200)]
drm/i915: Drop the IRQ-off asserts
The lockdep_assert_irqs_disabled() check is needless. The previous
lockdep_assert_held() check ensures that the lock is acquired and while
the lock is acquired lockdep also prints a warning if the interrupts are
not disabled if they have to be.
These IRQ-off asserts trigger on PREEMPT_RT because the locks become
sleeping locks and do not really disable interrupts.
Remove lockdep_assert_irqs_disabled().
Reported-by: Clark Williams <williams@redhat.com>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
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/20190926105644.16703-3-bigeasy@linutronix.de
Michał Winiarski [Thu, 26 Sep 2019 13:31:42 +0000 (14:31 +0100)]
drm/i915: Adjust length of MI_LOAD_REGISTER_REG
Default length value of MI_LOAD_REGISTER_REG is 1.
Also move it out of cmd-parser-only registers since we're going to use
it in i915.
Signed-off-by: Michał Winiarski <michal.winiarski@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Jani Nikula <jani.nikula@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/20190926133142.2838-3-chris@chris-wilson.co.uk
Michał Winiarski [Thu, 26 Sep 2019 13:31:41 +0000 (14:31 +0100)]
drm/i915/execlists: Use per-process HWSP as scratch
Some of our commands (MI_FLUSH_DW / PIPE_CONTROL) require a post-sync write
operation to be performed. Currently we're using dedicated VMA for
PIPE_CONTROL and global HWSP for MI_FLUSH_DW.
On execlists platforms, each of our contexts has an area that can be
used as scratch space. Let's use that instead.
Signed-off-by: Michał Winiarski <michal.winiarski@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@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/20190926133142.2838-2-chris@chris-wilson.co.uk
Michał Winiarski [Thu, 26 Sep 2019 13:31:40 +0000 (14:31 +0100)]
drm/i915: Define explicit wedged on init reset state
We're currently using scratch presence as a way of identifying that we
entered wedged state at driver initialization time.
Let's use a separate flag rather than rely on scratch.
Signed-off-by: Michał Winiarski <michal.winiarski@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@linux.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/20190926133142.2838-1-chris@chris-wilson.co.uk
Matt Roper [Wed, 25 Sep 2019 23:45:42 +0000 (16:45 -0700)]
drm/i915: Small joiner RAM buffer size is platform-specific
According to the bspec, GLK/CNL have a smaller small joiner RAM buffer
than ICL+. This feels like something that could easily change again on
future platforms, so let's just add a function to return the proper
per-platform buffer size. That may also slightly simplify the upcoming
bigjoiner enabling.
Since we have to change intel_dp_dsc_get_output_bpp()'s signature to
pass the dev_priv down for the platform check, let's take the
opportunity to also make that function static since it isn't used
outside the intel_dp file.
v2: Minor rebase on top of Maarten's changes.
Bspec: 20388
Bspec: 49259
Cc: Manasi Navare <manasi.d.navare@intel.com>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Manasi Navare <manasi.d.navare@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190925234542.24289-1-matthew.d.roper@intel.com
James Ausmus [Tue, 24 Sep 2019 22:28:29 +0000 (15:28 -0700)]
drm/i915/tgl: Add memory type decoding for bandwidth checking
The memory type values have changed in TGL, so we need to translate them
differently than ICL. While we're moving it, fix up the ICL translation
for LPDDR4.
BSpec: 53998
v2: Fix up ICL LPDDR4 entry (Ville); Drop unused values from TGL (Ville)
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Stanislav Lisovskiy <stanislav.lisovskiy@intel.com>
Signed-off-by: James Ausmus <james.ausmus@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Stuart Summers <stuart.summers@intel.com>
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190924222829.13142-1-james.ausmus@intel.com
José Roberto de Souza [Tue, 24 Sep 2019 21:00:40 +0000 (14:00 -0700)]
drm/i915/tgl: Return the mg/dkl pll as DDI clock for new TC ports
TGL added 2 more TC ports that currently are not being handled by
icl_pll_to_ddi_clk_sel(), so adding those.
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Cc: Lucas De Marchi <lucas.demarchi@intel.com>
Cc: Imre Deak <imre.deak@intel.com>
Reported-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190924210040.142075-6-jose.souza@intel.com
José Roberto de Souza [Tue, 24 Sep 2019 21:00:39 +0000 (14:00 -0700)]
drm/i915/tgl: Add dkl phy pll calculations
Extending ICL mg calculations to also support dkl calculations.
v3:
Fixing iref_trim calculation for 38400 refclock
BSpec: 49204
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Signed-off-by: Vandita Kulkarni <vandita.kulkarni@intel.com>
Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190924210040.142075-5-jose.souza@intel.com
Lucas De Marchi [Tue, 24 Sep 2019 21:00:38 +0000 (14:00 -0700)]
drm/i915/tgl: re-indent code to prepare for DKL changes
The final save operation into pll_state of the calculations done will
be different for DKL PHY. Prepare for that by reindenting code so it's
easier to check for correctness. This one has no change in behavior.
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190924210040.142075-4-jose.souza@intel.com
Vandita Kulkarni [Tue, 24 Sep 2019 21:00:36 +0000 (14:00 -0700)]
drm/i915/tgl: Add support for dkl pll write
Add a new function to write to dkl phy pll registers. As per the
bspec all the registers are read modify write.
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Signed-off-by: Vandita Kulkarni <vandita.kulkarni@intel.com>
Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190924210040.142075-2-jose.souza@intel.com
Lucas De Marchi [Tue, 24 Sep 2019 21:00:35 +0000 (14:00 -0700)]
drm/i915/tgl: Add initial dkl pll support
The disable function can be the same as for MG phy since the same
registers are used. The others are different as registers changed,
also adding a empty dkl_pll_write() to be implemented later.
v2:
Setting the right HIP_INDEX_REG bits (José)
v3:
Masking non-computed registers of mg_pll_tdc_coldst_bias
when getting hardware state
Sharing mg_pll_enable() with TGL
Reviewed-by: Imre Deak <imre.deak@intel.com>
Acked-by: Lucas De Marchi <lucas.demarchi@intel.com>
Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190924210040.142075-1-jose.souza@intel.com
Chris Wilson [Wed, 25 Sep 2019 13:08:45 +0000 (14:08 +0100)]
drm/i915/execlists: Simplify gen12_csb_parse
Having decided that we only care about the promotion predicate, we can
simplify gen12_csb_parse to simply check whether we need to jump to a
new queue.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Reviewed-by: Andi Shyti <andi.shyti@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190925130845.17952-1-chris@chris-wilson.co.uk
Maarten Lankhorst [Fri, 20 Sep 2019 11:42:21 +0000 (13:42 +0200)]
drm/i915: Do not add all planes when checking scalers on glk+
We cannot switch between HQ and normal mode on GLK+, so only
add planes on platforms where it makes sense.
We could probably restrict it even more to only add when scaler
users toggles between 1 and 2, but lets just leave it for now.
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190920114235.22411-9-maarten.lankhorst@linux.intel.com
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Maarten Lankhorst [Fri, 20 Sep 2019 11:42:20 +0000 (13:42 +0200)]
drm/i915: Rename planar linked plane variables
Rename linked_plane to planar_linked_plane and slave to planar_slave,
this will make it easier to keep apart bigjoiner linking and planar plane
linking.
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190920114235.22411-8-maarten.lankhorst@linux.intel.com
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Maarten Lankhorst [Fri, 20 Sep 2019 11:42:18 +0000 (13:42 +0200)]
drm/i915: Get rid of crtc_state->fb_changed
We had this as an optimization to not do a plane update, but we killed
it off because there are so many reasons we may have to do a plane
update or fastset that it's best to just assume everything changed.
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190920114235.22411-6-maarten.lankhorst@linux.intel.com
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Maarten Lankhorst [Wed, 25 Sep 2019 08:21:10 +0000 (10:21 +0200)]
drm/i915: Add hardware readout for FEC
Readout the FEC state in encoder->get_config(), this will allow
us to ensure that we can correctly inherit the state from boot,
and that we set FEC during modeset.
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190925082110.17439-2-maarten.lankhorst@linux.intel.com
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Maarten Lankhorst [Wed, 25 Sep 2019 08:21:09 +0000 (10:21 +0200)]
drm/i915/dp: Fix dsc bpp calculations, v5.
There was a integer wraparound when mode_clock became too high,
and we didn't correct for the FEC overhead factor when dividing,
with the calculations breaking at HBR3.
As a result our calculated bpp was way too high, and the link width
limitation never came into effect.
Print out the resulting bpp calcululations as a sanity check, just
in case we ever have to debug it later on again.
We also used the wrong factor for FEC. While bspec mentions 2.4%,
all the calculations use 1/0.972261, and the same ratio should be
applied to data M/N as well, so use it there when FEC is enabled.
This fixes the FIFO underrun we are seeing with FEC enabled.
Changes since v2:
- Handle fec_enable in intel_link_compute_m_n, so only data M/N is adjusted. (Ville)
- Fix initial hardware readout for FEC. (Ville)
Changes since v3:
- Remove bogus fec_to_mode_clock. (Ville)
Changes since v4:
- Use the correct register for icl. (Ville)
- Split hw readout to a separate patch.
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Fixes:
d9218c8f6cf4 ("drm/i915/dp: Add helpers for Compressed BPP and Slice Count for DSC")
Cc: <stable@vger.kernel.org> # v5.0+
Cc: Manasi Navare <manasi.d.navare@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190925082110.17439-1-maarten.lankhorst@linux.intel.com
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Swati Sharma [Tue, 24 Sep 2019 13:58:20 +0000 (19:28 +0530)]
Revert "drm/i915/color: Extract icl_read_luts()"
This reverts commit
84af7649188194a74cdd6437235a5e3c86108f0f.
This is causing problems with the display, displays are all
bright colors.
Fixes:
84af76491881 ("drm/i915/color: Extract icl_read_luts()")
Signed-off-by: Swati Sharma <swati2.sharma@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190924135820.11850-1-swati2.sharma@intel.com
Chris Wilson [Tue, 24 Sep 2019 17:35:01 +0000 (18:35 +0100)]
drm/i915/tgl: Swap engines for no rps (gpu reclocking)
If we disable rps, it appears the Tigerlake is stable enough to run
multiple engines simultaneously in CI. As disabling rps should only
cause the execution to be slow, whereas many features depend on the
different engines, we would prefer to have the engines enabled while the
machine hangs are being debugged.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=111714
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Acked-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190924173501.21956-1-chris@chris-wilson.co.uk
Ankit Nautiyal [Tue, 24 Sep 2019 07:31:52 +0000 (13:01 +0530)]
drm/i915: Add Pipe D cursor ctrl register for Gen12
Currently the offset for PIPE D cursor control register is missing in
i915_reg.h due to which the cursor plane cannot be enabled for Pipe D.
This also causes kernel Warning, when a user requests to enable cursor
plane for PIPE D for Gen 12 platforms.
This patch adds the CURSOR_CTL_D register in the i915_reg.h.
v2: Rebase
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=111640
Signed-off-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
[Lucas: remove extra blank line]
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1569310312-12313-1-git-send-email-ankit.k.nautiyal@intel.com
Chris Wilson [Tue, 24 Sep 2019 14:59:50 +0000 (15:59 +0100)]
drm/i915/selftests: Verify the LRC register layout between init and HW
Before we submit the first context to HW, we need to construct a valid
image of the register state. This layout is defined by the HW and should
match the layout generated by HW when it saves the context image.
Asserting that this should be equivalent should help avoid any undefined
behaviour and verify that we haven't missed anything important!
Of course, having insisted that the initial register state within the
LRC should match that returned by HW, we need to ensure that it does.
v2: Drop the RELATIVE_MMIO flag from gen11, we ignore it for
constructing the lrc image.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190924145950.3011-1-chris@chris-wilson.co.uk
Stanislav Lisovskiy [Fri, 20 Sep 2019 08:37:54 +0000 (11:37 +0300)]
drm/i915: Add TigerLake bandwidth checking
Added bandwidth calculation algorithm and checks,
similar way as it was done for ICL, some constants
were corrected according to BSpec 53998.
v2: Start using same icl_get_bw_info function to avoid
code duplication. Moved mpagesize to memory info
related structure as it is now dependent on memory type.
Fixed qi.t_bl field assignment.
v3: Removed mpagesize as unused. Duplicate code and redundant blankline
fixed.
v4: Changed ordering of IS_GEN checks as agreed. Minor commit
message fixes.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=111600
Reviewed-by: James Ausmus <james.ausmus@intel.com>
Signed-off-by: Stanislav Lisovskiy <stanislav.lisovskiy@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190920083754.5920-1-stanislav.lisovskiy@intel.com
Chris Wilson [Fri, 20 Sep 2019 12:18:21 +0000 (13:18 +0100)]
drm/i915: Mark contents as dirty on a write fault
Since dropping the set-to-gtt-domain in commit
a679f58d0510 ("drm/i915:
Flush pages on acquisition"), we no longer mark the contents as dirty on
a write fault. This has the issue of us then not marking the pages as
dirty on releasing the buffer, which means the contents are not written
out to the swap device (should we ever pick that buffer as a victim).
Notably, this is visible in the dumb buffer interface used for cursors.
Having updated the cursor contents via mmap, and swapped away, if the
shrinker should evict the old cursor, upon next reuse, the cursor would
be invisible.
E.g. echo 80 > /proc/sys/kernel/sysrq ; echo f > /proc/sysrq-trigger
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=111541
Fixes:
a679f58d0510 ("drm/i915: Flush pages on acquisition")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Matthew Auld <matthew.william.auld@gmail.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: <stable@vger.kernel.org> # v5.2+
Reviewed-by: Matthew Auld <matthew.william.auld@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190920121821.7223-1-chris@chris-wilson.co.uk
Chris Wilson [Mon, 23 Sep 2019 15:28:44 +0000 (16:28 +0100)]
drm/i915: Prevent bonded requests from overtaking each other on preemption
Force bonded requests to run on distinct engines so that they cannot be
shuffled onto the same engine where timeslicing will reverse the order.
A bonded request will often wait on a semaphore signaled by its master,
creating an implicit dependency -- if we ignore that implicit dependency
and allow the bonded request to run on the same engine and before its
master, we will cause a GPU hang. [Whether it will hang the GPU is
debatable, we should keep on timeslicing and each timeslice should be
"accidentally" counted as forward progress, in which case it should run
but at one-half to one-third speed.]
We can prevent this inversion by restricting which engines we allow
ourselves to jump to upon preemption, i.e. baking in the arrangement
established at first execution. (We should also consider capturing the
implicit dependency using i915_sched_add_dependency(), but first we need
to think about the constraints that requires on the execution/retirement
ordering.)
Fixes:
8ee36e048c98 ("drm/i915/execlists: Minimalistic timeslicing")
References:
ee1136908e9b ("drm/i915/execlists: Virtual engine bonding")
Testcase: igt/gem_exec_balancer/bonded-slice
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190923152844.8914-3-chris@chris-wilson.co.uk
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