Replace the old world 'pipe_config' variable name with the new thing.
Signed-off-by: NVille Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191127190556.1574-4-ville.syrjala@linux.intel.comReviewed-by: NJosé Roberto de Souza <jose.souza@intel.com>

Get rid of another 'dev' usage by passing dev_priv instead.
Signed-off-by: NVille Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191127190556.1574-3-ville.syrjala@linux.intel.comReviewed-by: NJosé Roberto de Souza <jose.souza@intel.com>

Don't pass the redundant dev_priv to needs_nv12_wa() and
needs_scalerclk_wa().
Signed-off-by: NVille Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191127190556.1574-2-ville.syrjala@linux.intel.comReviewed-by: NJosé Roberto de Souza <jose.souza@intel.com>

And Haswell still occasionally forgets it is meant to be using a new
page directory, so repeat ourselves a little louder.

<7> [509.919864] heartbeat rcs0 heartbeat {prio:-2147483645} not ticking
<7> [509.919895] heartbeat 	Awake? 8
<7> [509.919903] heartbeat 	Barriers?: no
<7> [509.919912] heartbeat 	Heartbeat: 3008 ms ago
<7> [509.919930] heartbeat 	Reset count: 0 (global 0)
<7> [509.919937] heartbeat 	Requests:
<7> [509.921008] heartbeat 		active  a7eb:56e1*  @ 5847ms:
<7> [509.921157] heartbeat 		ring->start:  0x00001000
<7> [509.921164] heartbeat 		ring->head:   0x00001610
<7> [509.921170] heartbeat 		ring->tail:   0x000023d8
<7> [509.921176] heartbeat 		ring->emit:   0x000023d8
<7> [509.921182] heartbeat 		ring->space:  0x00002570
<7> [509.921189] heartbeat 		ring->hwsp:   0x7fffe100
<7> [509.921197] heartbeat [head 1628, postfix 1738, tail 1750, batch 0xffffffff_ffffffff]:
<7> [509.921289] heartbeat [0000] 7a000002 00100002 00000000 00000000 7a000002 01154c1e 7ffff080 00000000
<7> [509.921299] heartbeat [0020] 11000001 00002220 ffffffff 12400001 00002220 7ffff000 00000000 11000001
<7> [509.921308] heartbeat [0040] 00002228 6e900000 7a000002 00100002 00000000 00000000 7a000002 01154c1e
<7> [509.921317] heartbeat [0060] 7ffff080 00000000 12400001 00002228 7ffff000 00000000 7a000002 00100002
<7> [509.921326] heartbeat [0080] 00000000 00000000 7a000002 01154c1e 7ffff080 00000000 7a000002 001010a1
<7> [509.921335] heartbeat [00a0] 7ffff080 00000000 04000000 11000005 00022050 00010001 00012050 00010001
<7> [509.921345] heartbeat [00c0] 0001a050 00010001 00000000 0c000000 459a110c 00000000 11000005 00022050
<7> [509.921354] heartbeat [00e0] 00010000 00012050 00010000 0001a050 00010000 12400001 0001a050 7ffff000
<7> [509.921363] heartbeat [0100] 00000000 04000001 18802100 00000000 7a000002 011050a1 7fffe100 000056e1
<7> [509.921370] heartbeat [0120] 01000000 00000000
<7> [509.921538] heartbeat 	MMIO base:  0x00002000
<7> [509.921682] heartbeat 	CCID: 0x3fa0110d
<7> [509.922342] heartbeat 	RING_START: 0x00001000
<7> [509.922353] heartbeat 	RING_HEAD:  0x00001628
<7> [509.922366] heartbeat 	RING_TAIL:  0x000023d8
<7> [509.922381] heartbeat 	RING_CTL:   0x00003001
<7> [509.922396] heartbeat 	RING_MODE:  0x00004000
<7> [509.922408] heartbeat 	RING_IMR: ffffffde
<7> [509.922421] heartbeat 	ACTHD:  0x00000000_30e01628
<7> [509.922434] heartbeat 	BBADDR: 0x00000000_00004004
<7> [509.922446] heartbeat 	DMA_FADDR: 0x00000000_00002800
<7> [509.922458] heartbeat 	IPEIR: 0x00000000
<7> [509.922470] heartbeat 	IPEHR: 0x780c0000
<7> [509.922642] heartbeat 	PP_DIR_BASE: 0x6e700000
<7> [509.922652] heartbeat 	PP_DIR_BASE_READ: 0x00000000
<7> [509.922662] heartbeat 	PP_DIR_DCLV: 0xffffffff
<7> [509.922678] heartbeat 		E  a7eb:56e1*  @ 5849ms:
<7> [509.922689] heartbeat 		E  a7eb:56e2-  @ 5849ms:
<7> [509.922698] heartbeat 		E  a7eb:56e3  @ 5848ms:
<7> [509.922707] heartbeat 		E  a7eb:56e4  @ 5848ms:
<7> [509.922715] heartbeat 		E  a7eb:56e5  @ 5847ms:
<7> [509.922724] heartbeat 		E  a7eb:56e6  @ 5846ms:
<7> [509.922735] heartbeat 		E  a7eb:56e7  @ 5846ms:
<7> [509.922744] heartbeat 		...skipping 4 executing requests...
<7> [509.922754] heartbeat 		E  a7eb:56ec  @ 3010ms:
<7> [509.922796] heartbeat HWSP:
<7> [509.922807] heartbeat [0000] 00000001 00000000 00000000 00000000 00000000 00000000 00000000 00000000
<7> [509.922817] heartbeat [0020] 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
<7> [509.922826] heartbeat *
<7> [509.922836] heartbeat [0100] 000056e0 00000000 00000000 00000000 00000000 00000000 00000000 00000000
<7> [509.922845] heartbeat [0120] 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
<7> [509.922851] heartbeat *
<7> [509.922870] heartbeat Idle? no
<7> [509.922878] heartbeat Signals:
<7> [509.923000] heartbeat 	[a7eb:56e2] @ 5850ms

Here, we have a failed context restore after the PD switch, but note
that the PP_DIR_BASE register does not match the LRI in the ring.

Bump it to 8^W 4 loops, and with that Baytrail starts passing the sanity
checks.
Signed-off-by: NChris Wilson <chris@chris-wilson.co.uk>
Acked-by: NMika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191203211631.3167430-1-chris@chris-wilson.co.uk

In order to avoid keeping a reference on the i915_vma (which is long
overdue!) we have to coordinate all the possible lifetimes and only use
the vma while we know it is alive. In this episode, we are reminded that
while idle, the closed vma are destroyed. So if the GT idles while we are
working with the vma, the vma itself becomes invalid.

First class i915_vma here we come, but in the meantime keep piling on
the straw.
Signed-off-by: NChris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: NMatthew Auld <matthew.auld@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191203155032.3137263-1-chris@chris-wilson.co.uk

Moving just to simplify handling as there is no change in behavior.

Cc: Lucas De Marchi <lucas.demarchi@intel.com>
Reviewed-by: NVille Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: NJosé Roberto de Souza <jose.souza@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191202222513.337777-3-jose.souza@intel.com

Disabling pipe/transcoder clock before power down sink could cause
sink lost signal, causing it to trigger a hotplug to notify source
that link signal was lost.

Cc: Lucas De Marchi <lucas.demarchi@intel.com>
Reviewed-by: NVille Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: NJosé Roberto de Souza <jose.souza@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191202222513.337777-2-jose.souza@intel.com

If the CRTC is going from enabled to disabled and it is a port sync
slave, it needs to check to the old state to be disabled before the
port sync master.

Cc: Manasi Navare <manasi.d.navare@intel.com>
Cc: Matt Roper <matthew.d.roper@intel.com>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: NVille Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: NJosé Roberto de Souza <jose.souza@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191202222513.337777-1-jose.souza@intel.com

Let's move handling and reset for gen11 display IRQs to their own
functions, similar to how we deal with GT interrupts.  This will make
the top-level functions a bit easier to read and potentially make things
easier to deal with in the future if new platforms wind up needing
different display handling logic.

Cc: Lucas De Marchi <lucas.demarchi@intel.com>
Signed-off-by: NMatt Roper <matthew.d.roper@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191202171608.3361125-1-matthew.d.roper@intel.comReviewed-by: NRadhakrishna Sripada <radhakrishna.sripada@intel.com>

Rather than assume if and only if the engine->default_state is not set
that the context is invalid, instead track when we know the context has
valid state -- either because we have copied the default_state or we
have completed a context switch to save the HW state.
Signed-off-by: NChris Wilson <chris@chris-wilson.co.uk>
Acked-by: NMika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191203124155.3019926-1-chris@chris-wilson.co.uk

Only along the submission path can we guarantee that the locked request
is indeed from a foreign engine, and so the nesting of engine/rq is
permissible. On the submission tasklet (process_csb()), we may find
ourselves competing with the normal nesting of rq/engine, invalidating
our nesting. As we only use the spinlock for debug purposes, skip the
debug if we cannot acquire the spinlock for safe validation - catching
99% of the bugs is better than causing a hard lockup.
Signed-off-by: NChris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Fixes: c95d31c3 ("drm/i915/execlists: Lock the request while validating it during promotion")
Reviewed-by: NTvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191203152631.3107653-2-chris@chris-wilson.co.uk

Check the pending request submission is valid: that it at least has a
reference for the submission and that the request is on the active list.
Signed-off-by: NChris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: NTvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191203152631.3107653-1-chris@chris-wilson.co.uk

Once inside a request, inside the timeline->mutex, pinning is verboten.

<4> [896.032829] ======================================================
<4> [896.032831] WARNING: possible circular locking dependency detected
<4> [896.032835] 5.4.0-rc8-CI-Patchwork_15533+ #1 Tainted: G     U
<4> [896.032838] ------------------------------------------------------
<4> [896.032841] gem_exec_parall/3720 is trying to acquire lock:
<4> [896.032844] ffff888401863270 (&kernel#2){+.+.}, at: i915_request_create+0x16/0x1c0 [i915]
<4> [896.032915]
but task is already holding lock:
<4> [896.032917] ffff8883ec1c93c0 (&vm->mutex){+.+.}, at: i915_vma_pin+0xf3/0x11c0 [i915]
<4> [896.032952]
which lock already depends on the new lock.

<4> [896.032954]
the existing dependency chain (in reverse order) is:
<4> [896.032956]
-> #1 (&vm->mutex){+.+.}:
<4> [896.032961]        __mutex_lock+0x9a/0x9d0
<4> [896.032995]        i915_vma_pin+0xf3/0x11c0 [i915]
<4> [896.033033]        intel_renderstate_emit+0xb9/0x9e0 [i915]
<4> [896.033081]        i915_gem_init+0x5a9/0xa50 [i915]
<4> [896.033112]        i915_driver_probe+0xb00/0x15f0 [i915]
<4> [896.033144]        i915_pci_probe+0x43/0x1c0 [i915]
<4> [896.033149]        pci_device_probe+0x9e/0x120
<4> [896.033154]        really_probe+0xea/0x420
<4> [896.033158]        driver_probe_device+0x10b/0x120
<4> [896.033161]        device_driver_attach+0x4a/0x50
<4> [896.033164]        __driver_attach+0x97/0x130
<4> [896.033168]        bus_for_each_dev+0x74/0xc0
<4> [896.033171]        bus_add_driver+0x142/0x220
<4> [896.033174]        driver_register+0x56/0xf0
<4> [896.033178]        do_one_initcall+0x58/0x2ff
<4> [896.033183]        do_init_module+0x56/0x1f8
<4> [896.033187]        load_module+0x243e/0x29f0
<4> [896.033190]        __do_sys_finit_module+0xe9/0x110
<4> [896.033194]        do_syscall_64+0x4f/0x210
<4> [896.033197]        entry_SYSCALL_64_after_hwframe+0x49/0xbe
<4> [896.033200]
-> #0 (&kernel#2){+.+.}:
<4> [896.033206]        __lock_acquire+0x1328/0x15d0
<4> [896.033209]        lock_acquire+0xa7/0x1c0
<4> [896.033213]        __mutex_lock+0x9a/0x9d0
<4> [896.033255]        i915_request_create+0x16/0x1c0 [i915]
<4> [896.033287]        intel_engine_flush_barriers+0x4c/0x100 [i915]
<4> [896.033327]        ggtt_flush+0x37/0x60 [i915]
<4> [896.033366]        i915_gem_evict_something+0x46b/0x5a0 [i915]
<4> [896.033407]        i915_gem_gtt_insert+0x21d/0x6a0 [i915]
<4> [896.033449]        i915_vma_pin+0xb36/0x11c0 [i915]
<4> [896.033488]        gen6_ppgtt_pin+0xd5/0x170 [i915]
<4> [896.033523]        ring_context_pin+0x2e/0xc0 [i915]
<4> [896.033554]        __intel_context_do_pin+0x6b/0x190 [i915]
<4> [896.033591]        i915_gem_do_execbuffer+0x1814/0x26c0 [i915]
<4> [896.033627]        i915_gem_execbuffer2_ioctl+0x11b/0x460 [i915]
<4> [896.033632]        drm_ioctl_kernel+0xa7/0xf0
<4> [896.033635]        drm_ioctl+0x2e1/0x390
<4> [896.033638]        do_vfs_ioctl+0xa0/0x6f0
<4> [896.033641]        ksys_ioctl+0x35/0x60
<4> [896.033644]        __x64_sys_ioctl+0x11/0x20
<4> [896.033647]        do_syscall_64+0x4f/0x210
<4> [896.033650]        entry_SYSCALL_64_after_hwframe+0x49/0xbe

Lift the object allocation and pin prior to the request construction.
Signed-off-by: NChris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: NMika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191202204316.2665847-1-chris@chris-wilson.co.uk

Some machines require ACPI for runtime resume, and ACPI is quite kmalloc
happy. We cannot handle kmalloc from inside the vm->mutex, as they are
used by the shrinker, and so we must ensure the global runtime-pm is
awake prior to unbinding to avoid the potential inversion.

<4> [57.121748] ======================================================
<4> [57.121750] WARNING: possible circular locking dependency detected
<4> [57.121753] 5.4.0-rc8-CI-CI_DRM_7466+ #1 Tainted: G     U
<4> [57.121754] ------------------------------------------------------
<4> [57.121756] i915_pm_rpm/1105 is trying to acquire lock:
<4> [57.121758] ffffffff82263a40 (fs_reclaim){+.+.}, at: fs_reclaim_acquire.part.117+0x0/0x30
<4> [57.121766]
but task is already holding lock:
<4> [57.121768] ffff888475a593c0 (&vm->mutex){+.+.}, at: i915_vma_unbind+0x21/0x50 [i915]
<4> [57.121868]
which lock already depends on the new lock.

<4> [57.121869]
the existing dependency chain (in reverse order) is:
<4> [57.121871]
-> #1 (&vm->mutex){+.+.}:
<4> [57.121951]        i915_gem_shrinker_taints_mutex+0xa2/0xd0 [i915]
<4> [57.122028]        i915_address_space_init+0xa9/0x170 [i915]
<4> [57.122104]        i915_ggtt_init_hw+0x47/0x130 [i915]
<4> [57.122150]        i915_driver_probe+0xbb4/0x15f0 [i915]
<4> [57.122197]        i915_pci_probe+0x43/0x1c0 [i915]
<4> [57.122202]        pci_device_probe+0x9e/0x120
<4> [57.122206]        really_probe+0xea/0x420
<4> [57.122209]        driver_probe_device+0x10b/0x120
<4> [57.122212]        device_driver_attach+0x4a/0x50
<4> [57.122214]        __driver_attach+0x97/0x130
<4> [57.122217]        bus_for_each_dev+0x74/0xc0
<4> [57.122220]        bus_add_driver+0x142/0x220
<4> [57.122222]        driver_register+0x56/0xf0
<4> [57.122226]        do_one_initcall+0x58/0x2ff
<4> [57.122230]        do_init_module+0x56/0x1f8
<4> [57.122233]        load_module+0x243e/0x29f0
<4> [57.122236]        __do_sys_finit_module+0xe9/0x110
<4> [57.122239]        do_syscall_64+0x4f/0x210
<4> [57.122242]        entry_SYSCALL_64_after_hwframe+0x49/0xbe
<4> [57.122244]
-> #0 (fs_reclaim){+.+.}:
<4> [57.122249]        __lock_acquire+0x1328/0x15d0
<4> [57.122251]        lock_acquire+0xa7/0x1c0
<4> [57.122254]        fs_reclaim_acquire.part.117+0x24/0x30
<4> [57.122257]        __kmalloc+0x48/0x320
<4> [57.122261]        acpi_ns_internalize_name+0x44/0x9b
<4> [57.122264]        acpi_ns_get_node_unlocked+0x6b/0xd3
<4> [57.122267]        acpi_ns_get_node+0x3b/0x50
<4> [57.122271]        acpi_get_handle+0x8a/0xb4
<4> [57.122274]        acpi_has_method+0x1c/0x40
<4> [57.122278]        acpi_pci_set_power_state+0x40/0xe0
<4> [57.122281]        pci_platform_power_transition+0x3e/0x90
<4> [57.122284]        pci_set_power_state+0x83/0xf0
<4> [57.122287]        pci_restore_standard_config+0x22/0x40
<4> [57.122289]        pci_pm_runtime_resume+0x23/0xc0
<4> [57.122293]        __rpm_callback+0xb1/0x110
<4> [57.122296]        rpm_callback+0x1a/0x70
<4> [57.122299]        rpm_resume+0x50e/0x790
<4> [57.122302]        __pm_runtime_resume+0x42/0x80
<4> [57.122357]        __intel_runtime_pm_get+0x15/0x60 [i915]
<4> [57.122435]        ggtt_unbind_vma+0x24/0x60 [i915]
<4> [57.122514]        __i915_vma_unbind.part.39+0xb5/0x500 [i915]
<4> [57.122593]        i915_vma_unbind+0x2d/0x50 [i915]
<4> [57.122668]        i915_gem_object_unbind+0x11c/0x260 [i915]
<4> [57.122740]        i915_gem_object_set_cache_level+0x32/0x90 [i915]
<4> [57.122810]        i915_gem_set_caching_ioctl+0x1f7/0x2f0 [i915]
<4> [57.122815]        drm_ioctl_kernel+0xa7/0xf0
<4> [57.122818]        drm_ioctl+0x2e1/0x390
<4> [57.122822]        do_vfs_ioctl+0xa0/0x6f0
<4> [57.122825]        ksys_ioctl+0x35/0x60
<4> [57.122828]        __x64_sys_ioctl+0x11/0x20
<4> [57.122830]        do_syscall_64+0x4f/0x210
<4> [57.122833]        entry_SYSCALL_64_after_hwframe+0x49/0xbe

Closes: https://gitlab.freedesktop.org/drm/intel/issues/711Signed-off-by: NChris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: NMatthew Auld <matthew.auld@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191203101347.2836057-1-chris@chris-wilson.co.uk

As the i915_active.retire() may be running on another CPU as we detect
that the i915_active is idle, we may not wait for the retirement itself.
Wait for the remote callback by waiting for the retirement worker.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=112424Signed-off-by: NChris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: NTvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191202140133.2444217-2-chris@chris-wilson.co.uk

Similar to for i915_active.mutex, we require each class of i915_active
to have distinct lockdep chains as some, but by no means all,
i915_active are used within the shrinker and so have much more severe
usage constraints. By using a lockclass local to i915_active_init() all
i915_active workers have the same lock class, and we may generate false
positives when waiting for the i915_active. If we push the lockclass
into the caller, each class of i915_active will have distinct lockdep
chains.
Signed-off-by: NChris Wilson <chris@chris-wilson.co.uk>
Acked-by: NTvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191202140133.2444217-1-chris@chris-wilson.co.uk

Avoid dangerous race handling of destroyed vma by unbinding all vma
instead. Unfortunately, this stops us from trying to be clever and only
doing the minimal change required, so on first use of scanout we may
encounter an annoying stall as it transitions to a new cache level.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=112413Signed-off-by: NChris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: NMatthew Auld <matthew.auld@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191202174310.2630302-1-chris@chris-wilson.co.uk

Quite simply we only need to check for prior corruption on enabling rc6
on module load and resume, so by hooking into the common entry points.
Signed-off-by: NChris Wilson <chris@chris-wilson.co.uk>
Acked-by: NAndi Shyti <andi.shyti@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191202110836.2342685-2-chris@chris-wilson.co.uk

Now that we have soft-rc6 in place, we can use that instead of the
forcewake to disable rc6 while active; preferred by a few
microbenchmarks.
Signed-off-by: NChris Wilson <chris@chris-wilson.co.uk>
Acked-by: NAndi Shyti <andi.shyti@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191202110836.2342685-1-chris@chris-wilson.co.uk

The unaligned ioread32() will make us read byte by byte looking for the
vbt. We could just as well have done a ioread8() + a shift and avoid the
extra confusion on how we are looking for "$VBT".

However when using ACPI it's guaranteed the VBT is 4-byte aligned
per spec, so we can probably assume it here as well.

v2: do not try to simplify the loop by eliminating the auxiliary counter
(Jani and Ville)
Signed-off-by: NLucas De Marchi <lucas.demarchi@intel.com>
Reviewed-by: NJani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191126225110.8127-4-lucas.demarchi@intel.com

We don't need to keep the pci rom mapped during the entire
intel_bios_init() anymore. Move it to the previous copy_vbt() function
and rename it to oprom_get_vbt() since now it's responsible to to all
operations related to get the vbt from the oprom.

v2: fix double __iomem attribute detected by sparse
v3: fix missing unmap on success (Ville)
Signed-off-by: NLucas De Marchi <lucas.demarchi@intel.com>
Reviewed-by: NJani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191126225110.8127-3-lucas.demarchi@intel.com

When we map the VBT through pci_map_rom() we may not be allowed
to simply discard the address space and go on reading the memory.
That doesn't work on my test system, but by dumping the rom via
sysfs I can can get the correct vbt. So change our find_vbt() to do
the same as done by pci_read_rom(), i.e. use memcpy_fromio().

v2: the just the minimal changes by not bothering with the unaligned io
reads: this can be done on top (from Ville and Jani)

v3: drop const in function return since now we are copying the vbt,
rather than just finding it
Signed-off-by: NLucas De Marchi <lucas.demarchi@intel.com>
Reviewed-by: NVille Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191126225110.8127-2-lucas.demarchi@intel.com

MST topology needs to be suspended so we don't have any calls to
fbdev after it's finalized. MST will be destroyed later as part of
drm_mode_config_cleanup().

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=109964Signed-off-by: NJosé Roberto de Souza <jose.souza@intel.com>
Reviewed-by: NLucas De Marchi <lucas.demarchi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191127021609.162700-1-jose.souza@intel.com

From VBT 228+ this is block that PSR and other power saving
features configuration should be read from.

v3:
Using DRRS from this new block

v4:
Using BIT()
Fixing DRRS comment in parse_power_conservation_features()

Cc: Matt Roper <matthew.d.roper@intel.com>
Cc: Gwan-gyeong Mun <gwan-gyeong.mun@intel.com>
Reviewed-by: NMatt Roper <matthew.d.roper@intel.com>
Signed-off-by: NJosé Roberto de Souza <jose.souza@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191128014852.214135-5-jose.souza@intel.com

eDP specification states that sink can have its PSR capability
changed, I have never found any panel doing that but lets add that
for completeness.
For now it is not reading back the PSR capabilities and if possible
re-enabling PSR, this will be added if a panel is found using this
feature.

v4:
Cleaning DP_PSR_CAPS_CHANGE
Reviewed-by: NMatt Roper <matthew.d.roper@intel.com>
Cc: Gwan-gyeong Mun <gwan-gyeong.mun@intel.com>
Signed-off-by: NJosé Roberto de Souza <jose.souza@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191128014852.214135-4-jose.souza@intel.com

When this error happens sink link is not stable after the required
FW_EXIT_LATENCY period so it will miss the selective update.
As the other PSR errors, for now we are not trying to recover from
it.

Cc: Gwan-gyeong Mun <gwan-gyeong.mun@intel.com>
Reviewed-by: NMatt Roper <matthew.d.roper@intel.com>
Signed-off-by: NJosé Roberto de Souza <jose.souza@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191128014852.214135-3-jose.souza@intel.com

eDP spec states that when sink enconters a problem that prevents it
to keep PSR running it should set PSR status to internal error and
set the reason why it happen to PSR_ERROR_STATUS but it is not how it
was implemented.
But also I don't want to change this behavior, who knows if there is
a panel out there that only set the PSR_ERROR_STATUS.

So here refactoring the code a bit to make more easy to read what was
state above as more checks will be added to this function.

v2:
returning a int instead of a bool in psr_get_status_and_error_status()

Cc: Gwan-gyeong Mun <gwan-gyeong.mun@intel.com>
Cc: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: NMatt Roper <matthew.d.roper@intel.com>
Signed-off-by: NJosé Roberto de Souza <jose.souza@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191128014852.214135-2-jose.souza@intel.com

PSR2 HW only support a limited number of bits per pixel, if mode has
more than supported PSR2 should not be enabled.

BSpec: 50422
BSpec: 7713
Cc: Gwan-gyeong Mun <gwan-gyeong.mun@intel.com>
Cc: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: NLucas De Marchi <lucas.demarchi@intel.com>
Reviewed-by: NMatt Roper <matthew.d.roper@intel.com>
Signed-off-by: NJosé Roberto de Souza <jose.souza@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191128014852.214135-1-jose.souza@intel.com

The "err" label is not really "err", but rather "out" since the return
path is shared between error condition and normal path. This broke when
commit 03cea610 ("drm/i915/dsb: fix extra warning on error path
handling") added a "dsb->cmd_buf = NULL;" there, making DSB to stop
working since now all writes would pass-through via mmio.

Remove the set to NULL since it's actually not needed: we only set it if
all steps are successful. While at it, rename the label so this confusion
doesn't happen again.

Fixes: 03cea610 ("drm/i915/dsb: fix extra warning on error path handling")
Resolves: https://gitlab.freedesktop.org/drm/intel/issues/8Signed-off-by: NLucas De Marchi <lucas.demarchi@intel.com>
Reviewed-by: NAnimesh Manna <animesh.manna@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191127221119.384754-1-lucas.demarchi@intel.com

Migrate away from the legacy encoder->crtc and connector->encoder links
in the debugfs display_info code. Other users still remain so can't kill
these off yet.
Signed-off-by: NVille Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191129185434.25549-10-ville.syrjala@linux.intel.comReviewed-by: NRamalingam C <ramalingam.c@intel.com>

Let's make the display info more useful by dumping both
the uapi and hw states for each crtc/plane.
Signed-off-by: NVille Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191129185434.25549-9-ville.syrjala@linux.intel.comReviewed-by: NRamalingam C <ramalingam.c@intel.com>

Use the canonical "[CRTC:%d:%s]" format for the obj id/name
in the debugfs display_info dump. Everyone should already be
familiar with the format since it's used in the debug logs
extensively.
Signed-off-by: NVille Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191129185434.25549-8-ville.syrjala@linux.intel.comReviewed-by: NRamalingam C <ramalingam.c@intel.com>

Make out life easier by just grabbing all modeset locks around
the display_info dump.
Signed-off-by: NVille Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191129185434.25549-7-ville.syrjala@linux.intel.comReviewed-by: NRamalingam C <ramalingam.c@intel.com>

No point in repeating the crtc mode for each cloned encoder.
Just print it once, and avoid using multiple lines for it.
And while at let's polish the fixed mode print to fit on
one line as well.
Signed-off-by: NVille Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191129185434.25549-6-ville.syrjala@linux.intel.comReviewed-by: NRamalingam C <ramalingam.c@intel.com>

Pull the crtc dumping stuff into a nice function so the
loop over the crtcs doesn't look like crap.
Signed-off-by: NVille Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191129185434.25549-5-ville.syrjala@linux.intel.comReviewed-by: NRamalingam C <ramalingam.c@intel.com>

Eliminate the special cases for the primary and cursor planes and just
dump all the information consistently for all the planes.
Signed-off-by: NVille Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191129185434.25549-4-ville.syrjala@linux.intel.comReviewed-by: NRamalingam C <ramalingam.c@intel.com>

Switch to using intel_ types in the  debugfs display_info code.
Should make it easier to handle bigjoiner etc. in the future.
Signed-off-by: NVille Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191129185434.25549-3-ville.syrjala@linux.intel.comReviewed-by: NRamalingam C <ramalingam.c@intel.com>

Use DRM_RECT_FMT & co. to simpify the code.
Signed-off-by: NVille Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191129185434.25549-2-ville.syrjala@linux.intel.comReviewed-by: NRamalingam C <ramalingam.c@intel.com>

It's hard to see what is going on when the function mixes drm_
and intel_ types. Switch to intel_ types.

v2: Deal with another use of 'intel_crtc' being introduced
Signed-off-by: NVille Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191105171447.22111-2-ville.syrjala@linux.intel.comReviewed-by: NLucas De Marchi <lucas.demarchi@intel.com>

The bspec tells us 'Program SHPD_FILTER_CNT with the "500 microseconds
adjusted" value before enabling hotplug detection' on CNP+.  We haven't
been touching this register at all thus far, but we should probably
follow the bspec's guidance.

The register also exists on LPT and SPT, but there isn't any specific
guidance I can find on how we should be programming it there so let's
leave it be for now.

Bspec: 4342
Bspec: 31297
Bspec: 8407
Bspec: 49305
Bspec: 50473
Signed-off-by: NMatt Roper <matthew.d.roper@intel.com>
Reviewed-by: NJosé Roberto de Souza <jose.souza@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191127221314.575575-3-matthew.d.roper@intel.com