Make it clear that the color adjust callback applies to the ggtt.
Signed-off-by: NMatthew Auld <matthew.auld@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Reviewed-by: NChris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: NChris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20190909124052.22900-2-matthew.auld@intel.com

Export color_differs so that we can use it elsewhere.
Signed-off-by: NMatthew Auld <matthew.auld@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Reviewed-by: NChris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: NChris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20190909124052.22900-1-matthew.auld@intel.com

As we may unwind incomplete requests (for preemption) prior to
processing the CSB and the schedule-out events, we may update rq->engine
(resetting it to point back to the parent virtual engine) prior to
calling execlists_schedule_out(), invalidating the assertion that the
request still points to the inflight engine. (The likelihood of this is
increased if the CSB interrupt processing is pushed to the ksoftirqd for
being too slow and direct submission overtakes it.)

Tvrtko summarised it as:
"So unwind from direct submission resets rq->engine and races with
process_csb from the tasklet which notices request has actually
completed."
Reported-by: NVinay Belgaumkar <vinay.belgaumkar@intel.com>
Fixes: df403069 ("drm/i915/execlists: Lift process_csb() out of the irq-off spinlock")
Signed-off-by: NChris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: Vinay Belgaumkar <vinay.belgaumkar@intel.com>
Reviewed-by: NTvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190907105046.19934-1-chris@chris-wilson.co.uk

We are meant to register the kmem cache at init, such the supplied exit
and shrink hooks can be called.
Signed-off-by: NMatthew Auld <matthew.auld@intel.com>
Reviewed-by: NMika Kuoppala <mika.kuoppala@linux.intel.com>
Signed-off-by: NChris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20190905072921.7979-1-matthew.auld@intel.com

Refactor the GT power management interface to work through the GT now
that it is under the control of gt/

Based on a patch by Chris Wilson.
Signed-off-by: NAndi Shyti <andi.shyti@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: NChris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: NChris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20190905111403.10071-1-andi.shyti@intel.com

Gen12 has subtle changes in the reg state context offsets (some fields
are gone, some are in a different location), compared to previous Gens.

The simplest approach seems to be keeping Gen12 (and future platform)
changes apart from the previous gens, while keeping the registers that
are contiguous in functions we can reuse.

v2: alias, virtual engine, rpcs, prune unused regs
v3: use engine base (Daniele), take ctx_bb for all

Bspec: 46255
Cc: Michal Wajdeczko <michal.wajdeczko@intel.com>
Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: José Roberto de Souza <jose.souza@intel.com>
Signed-off-by: NMichel Thierry <michel.thierry@intel.com>
Signed-off-by: NLucas De Marchi <lucas.demarchi@intel.com>
Signed-off-by: NMika Kuoppala <mika.kuoppala@linux.intel.com>
Reviewed-by: NDaniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Tested-by: NDaniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
[ickle: Tweaked the GEM_WARN_ON after settling on a compromise with
Daniele]
Signed-off-by: NChris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20190906122314.2146-2-mika.kuoppala@linux.intel.com

Daniele pointed out that relative mmio works differently in
on context restore. Instead of adding the engine mmio base to offset,
it masks out the base and adds bits [12:2] to current engine base.

This should allow us to construct context register state to be
applicable to all instances, including virtual. And avoid the trouble
of updating the registers on virtual instances when submitting work.

v2: only enable for gen12 for now (Mika)
v3: make enabling readable (Chris)

Bspec: 20206
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: Michal Wajdeczko <michal.wajdeczko@intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Lucas De Marchi <lucas.demarchi@intel.com>
Cc: John Harrison <John.C.Harrison@Intel.com>
Suggested-by: NDaniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Signed-off-by: NMika Kuoppala <mika.kuoppala@linux.intel.com>
Reviewed-by: NChris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: NChris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20190906134957.25909-1-mika.kuoppala@linux.intel.com

Unlike gen11, which always ran at 50MHz when the cdclk PLL was disabled,
TGL runs at refclk/2.  The 50MHz croclk/2 is only used by hardware
during some power state transitions.

Bspec: 49201
Cc: José Roberto de Souza <jose.souza@intel.com>
Signed-off-by: NMatt Roper <matthew.d.roper@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190905181337.23727-1-matthew.d.roper@intel.comReviewed-by: NVille Syrjälä <ville.syrjala@linux.intel.com>

This adds basic immutable support for the zpos property. The zpos increases
from bottom to top: primary, sprites, cursor.
Signed-off-by: NVille Syrjälä <ville.syrjala@linux.intel.com>
[contact@emersion.fr: adapted for latest drm-tip]
Signed-off-by: NSimon Ser <contact@emersion.fr>
Link: https://patchwork.freedesktop.org/patch/msgid/YSH9PasoADJJdNJCSdI4m55ankIBsCaoSgkw-NQ5dlruCAxc8J-SQwVl5n3ddSAMDLTdbdyQvkONmtbjkUU-TQk5VIu1p-aZRO1OjjuSxjY=@emersion.frReviewed-by: NMaarten Lankhorst <maarten.lankhorst@linux.intel.com>

If we make sure we grab a strong reference to each object as we dump it,
we can reduce the locks outside of our iterators to an rcu_read_lock.

This should prevent errors like:
[ 2138.371911] BUG: KASAN: use-after-free in per_file_stats+0x43/0x380 [i915]
[ 2138.371924] Read of size 8 at addr ffff888223651000 by task cat/8293

[ 2138.371947] CPU: 0 PID: 8293 Comm: cat Not tainted 5.3.0-rc6-CI-Custom_4352+ #1
[ 2138.371953] Hardware name: To Be Filled By O.E.M. To Be Filled By O.E.M./J4205-ITX, BIOS P1.40 07/14/2017
[ 2138.371959] Call Trace:
[ 2138.371974]  dump_stack+0x7c/0xbb
[ 2138.372099]  ? per_file_stats+0x43/0x380 [i915]
[ 2138.372108]  print_address_description+0x73/0x3a0
[ 2138.372231]  ? per_file_stats+0x43/0x380 [i915]
[ 2138.372352]  ? per_file_stats+0x43/0x380 [i915]
[ 2138.372362]  __kasan_report+0x14e/0x192
[ 2138.372489]  ? per_file_stats+0x43/0x380 [i915]
[ 2138.372502]  kasan_report+0xe/0x20
[ 2138.372625]  per_file_stats+0x43/0x380 [i915]
[ 2138.372751]  ? i915_panel_show+0x110/0x110 [i915]
[ 2138.372761]  idr_for_each+0xa7/0x160
[ 2138.372773]  ? idr_get_next_ul+0x110/0x110
[ 2138.372782]  ? do_raw_spin_lock+0x10a/0x1d0
[ 2138.372923]  print_context_stats+0x264/0x510 [i915]
Signed-off-by: NChris Wilson <chris@chris-wilson.co.uk>
Tested-by: NDavid Weinehall <david.weinehall@linux.intel.com>
Reviewed-by: NMika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190903062133.27360-1-chris@chris-wilson.co.uk

Tiger Lake has up to 4 pipes so the mask would need to be 0xf instead of
0x7. Do not hardcode the mask so it allows the fake MST encoders to
connect to all pipes no matter how many the platform has.

Iterating over all pipes to keep consistent with intel_ddi_init().

Initialy this patch was replaced by commit 4eaceea3 ("drm/i915:
Fix DP-MST crtc_mask") but userspace it not correctly using
encoder.possible_crtcs and it was reverted by
commit e838bfa8 ("Revert "drm/i915: Fix DP-MST crtc_mask"")

Userspace should be fixed but it might take a while, so bringing this
patch back for now.

Cc: Lucas De Marchi <lucas.demarchi@intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: NJosé Roberto de Souza <jose.souza@intel.com>
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/20190904230241.20638-2-jose.souza@intel.com

WA 1409120013 is also valid for TGL, so lets check for ">= 11".

BSpec: 52890

Cc: Matt Roper <matthew.d.roper@intel.com>
Cc: Clinton Taylor <Clinton.A.Taylor@intel.com>
Signed-off-by: NJosé Roberto de Souza <jose.souza@intel.com>
Reviewed-by: NMatt Roper <matthew.d.roper@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190904230241.20638-1-jose.souza@intel.com

Add case for gen == 12 and add MISSING_CASE() for future gens. We were
already handling gen12 as the default, so this doesn't change the
current behavior.

BSpec: 19481 and 44980

Cc: CQ Tang <cq.tang@intel.com>
Signed-off-by: NLucas De Marchi <lucas.demarchi@intel.com>
Reviewed-by: NJosé Roberto de Souza <jose.souza@intel.com>
Reviewed-by: NMatt Roper <matthew.d.roper@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190904213419.27547-7-jose.souza@intel.comSigned-off-by: NJosé Roberto de Souza <jose.souza@intel.com>

SAGV is not currently working for Tiger Lake. We better disable it until
the implementation is stabilized and we can enable it.

HSDES: 1409542895 2208191909
Signed-off-by: NLucas De Marchi <lucas.demarchi@intel.com>
Reviewed-by: NJosé Roberto de Souza <jose.souza@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190904213419.27547-6-jose.souza@intel.comSigned-off-by: NJosé Roberto de Souza <jose.souza@intel.com>

Gen 12 onwards moves the DP_TP_* registers to be transcoder-based rather
than port-based. This adds the new register addresses and changes all
the callers to use the register saved in intel_dp->regs.*. This is
filled out when preparing to enable the port so we take into account if
we should use the transcoder or the port.

v2: reimplement by stashing the registers we want to access under
intel_dp->reg. Now they are initialized when enabling the port.
Ville suggested to store the transcoder to be used exclusively
by TGL+. After implementing I thought just storing the register directly
made it cleaner.

Cc: Matt Roper <matthew.d.roper@intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: NLucas De Marchi <lucas.demarchi@intel.com>
Reviewed-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/20190904213419.27547-5-jose.souza@intel.comSigned-off-by: NJosé Roberto de Souza <jose.souza@intel.com>

DP_TP_{CTL,STATUS} should only be programmed when the encoder is intel_dp.
Checking its current usages intel_disable_ddi_buf() is the only
offender, with other places being protected by checks like
pipe_config->fec_enable that is only set by intel_dp.

v3 (José):
- Using intel_crtc_has_dp_encoder() instead of intel_encoder_is_dp()
(Ville)

Cc: Matt Roper <matthew.d.roper@intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: NLucas De Marchi <lucas.demarchi@intel.com>
Reviewed-by: NMatt Roper <matthew.d.roper@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190904213419.27547-4-jose.souza@intel.comSigned-off-by: NJosé Roberto de Souza <jose.souza@intel.com>

For older gens PSR IIR and IMR have fixed addresses. From TGL onwards those
registers moved to each transcoder offset. The bits for the registers
are defined without an offset per transcoder as right now we have one
register per transcoder. So add a fake "trans_shift" when calculating
the bits offsets: it will be 0 for gen12+ and psr.transcoder otherwise.

v2 (Lucas): change the implementation to use trans_shift instead of
getting each bit value with a different macro

Cc: Imre Deak <imre.deak@intel.com>
Cc: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: NJosé Roberto de Souza <jose.souza@intel.com>
Signed-off-by: NLucas De Marchi <lucas.demarchi@intel.com>
Reviewed-by: NMatt Roper <matthew.d.roper@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190904213419.27547-3-jose.souza@intel.com

It was enabling and checking PSR interruptions in every transcoder
while it should keep the interruptions on the non-used transcoders
masked.

While doing this it gives us trouble on Tiger Lake if we are
reading/writing to registers of disabled transcoders since from gen12
onwards the registers are relative to the transcoder. Instead of forcing
them ON to access those registers, just avoid the accesses as they are
not needed.

v2 (Lucas):
  - Explain why we can't keep accessing all transcoders
  - Remove TODO about extending the irq handling to multiple instances:
    when/if implementing multiple instances it's pretty clear by the
    singleton psr that it needs to be extended
  - Fix intel_psr_debug_set() calling psr_irq_control() with
    psr.transcoder not set yet (from Imre). Now we only set the debug
    register right away if psr is already enabled. Otherwise we just
    record the value to be set when enabling the source.
  - Do not depend on the value of TRANSCODER_A. Just be relative to it
    (from Imre)
  - handle psr error last so we don't schedule the work before handling
    the other flags

v3:
  - Adding a warning about setting reserverd bits on EDP_PSR_IMR

Cc: Imre Deak <imre.deak@intel.com>
Cc: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
Signed-off-by: NJosé Roberto de Souza <jose.souza@intel.com>
Signed-off-by: NLucas De Marchi <lucas.demarchi@intel.com>
Reviewed-by: NMatt Roper <matthew.d.roper@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190904213419.27547-2-jose.souza@intel.com

The cpu (de)tiler hw is gone, this stopped being useful. Plus it never
supported any of the fancy new tiling formats, which means userspace
also stopped using the magic side-channel this provides.

This would totally break a lot of the igts, but they're already broken
for the same reasons as userspace on gen12 would be.

v2: Look at ggtt->num_fences instead, that also avoids the need for a
comment (Chris). This also means that gen12 support really needs to
make sure num_fences is set to 0. There is a patch for that, but it
checks for HAS_MAPPABLE_APERTURE, which I'm not sure is the right
thing really. Adding relevant people.

Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Cc: Stuart Summers <stuart.summers@intel.com>
Cc: Matthew Auld <matthew.auld@intel.com>
Cc: Kenneth Graunke <kenneth@whitecape.org>
Cc: Jason Ekstrand <jason@jlekstrand.net>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Lucas De Marchi <lucas.demarchi@intel.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@intel.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: NJosé Roberto de Souza <jose.souza@intel.com>
Reviewed-by: NJosé Roberto de Souza <jose.souza@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190820195451.15671-1-daniel.vetter@ffwll.ch

This reverts commit 4eaceea3.

Several userspace clients (modesetting ddx and mutter+wayland at least)
handle encoder.possible_crtcs incorrectly. What they essentially do is
the following:

possible_crtcs = ~0;
for_each_possible_encoder(connector)
	possible_crtcs &= encoder->possible_crtcs;

Ie. they calculate the intersection of the possible_crtcs
for the connector when they really should be calculating the
union instead.

In our case each MST encoder now has just one unique bit set,
and so the intersection is always zero. The end result is that
MST connectors can't be lit up because no crtc can be found to
drive them.

I've submitted a fix for the modesetting ddx [1], and complained
on #wayland about mutter, so hopefully the situation will improve
in the future. In the meantime we have regression, and so must go
back to the old way of misconfiguring possible_crtcs in the kernel.

[1] https://gitlab.freedesktop.org/xorg/xserver/merge_requests/277

Cc: Jonas Ådahl <jadahl@gmail.com>
Cc: Stanislav Lisovskiy <stanislav.lisovskiy@intel.com>
Cc: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Cc: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
Cc: Lucas De Marchi <lucas.demarchi@intel.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=111507Signed-off-by: NVille Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190903154018.26357-1-ville.syrjala@linux.intel.comReviewed-by: NJosé Roberto de Souza <jose.souza@intel.com>

This bit was fliped on for "syncing dependencies between camera and
graphics". BSpec has no recollection why, and it is causing
unrecoverable GPU hangs with Vulkan compute workloads.

From BSpec, setting bit5 to 0 enables relaxed padding requirements for
buffers, 1D and 2D non-array, non-MSAA, non-mip-mapped linear surfaces;
and *must* be set to 0h on skl+ to ensure "Out of Bounds" case is
suppressed.
Reported-by: NJason Ekstrand <jason@jlekstrand.net>
Suggested-by: NJason Ekstrand <jason@jlekstrand.net>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=110998
Fixes: 8424171e ("drm/i915/gen9: h/w w/a: syncing dependencies between camera and graphics")
Signed-off-by: NChris Wilson <chris@chris-wilson.co.uk>
Tested-by: denys.kostin@globallogic.com
Cc: Jason Ekstrand <jason@jlekstrand.net>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Cc: <stable@vger.kernel.org> # v4.1+
Reviewed-by: NMika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190904100707.7377-1-chris@chris-wilson.co.uk

For glk, add hw read out to create hw blob of gamma
lut values.

v4: -No need to initialize *blob [Jani]
    -Removed right shifts [Jani]
    -Dropped dev local var [Jani]
v5: -Returned blob instead of assigning it internally within the
     function [Ville]
    -Renamed glk_get_color_config() to glk_read_luts() [Ville]
    -Added degamma validation [Ville]
v9: -80 character limit [Uma]
    -Made read func para as const [Ville, Uma]
Signed-off-by: NSwati Sharma <swati2.sharma@intel.com>
Reviewed-by: NJani Nikula <jani.nikula@intel.com>
Signed-off-by: NJani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1567538578-4489-8-git-send-email-swati2.sharma@intel.com

For ilk, add hw read out to create hw blob of gamma
lut values.

v4:  -No need to initialize *blob [Jani]
     -Removed right shifts [Jani]
     -Dropped dev local var [Jani]
v5:  -Returned blob instead of assigning it internally within the
      function [Ville]
     -Renamed ilk_get_color_config() to ilk_read_luts() [Ville]
v9:  -80 character limit [Uma]
     -Made read func para as const [Ville, Uma]
     -Renamed ilk_read_gamma_lut() to ilk_read_lut_10() [Uma, Ville]
v10: -Made ilk_read_luts() static [Jani]
     -ilk_load_lut_10 has lut_size, not (lut_size - 1) [Jani]
Signed-off-by: NSwati Sharma <swati2.sharma@intel.com>
Reviewed-by: NJani Nikula <jani.nikula@intel.com>
Signed-off-by: NJani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1567538578-4489-7-git-send-email-swati2.sharma@intel.com

For the legacy(gen < 4) gamma, add hw read out to create hw blob of gamma
lut values. Also, add function intel_color_lut_pack to convert hw value
with given bit precision to lut property val.

v4:  -No need to initialize *blob [Jani]
     -Removed right shifts [Jani]
     -Dropped dev local var [Jani]
v5:  -Returned blob instead of assigning it internally within the
      function [Ville]
     -Renamed function i9xx_get_color_config() to i9xx_read_luts()
     -Renamed i9xx_get_config_internal() to i9xx_read_lut_8() [Ville]
v9:  -Change in commit message [Jani, Uma]
     -Wrap commit within 75 characters [Uma]
     -Use macro for 256 [Uma]
     -Made read func para as const [Ville, Uma]
v10: -Made i9xx_read_luts() static [Jani]
Signed-off-by: NSwati Sharma <swati2.sharma@intel.com>
Reviewed-by: NJani Nikula <jani.nikula@intel.com>
Signed-off-by: NJani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1567538578-4489-6-git-send-email-swati2.sharma@intel.com

Add macro to compare hw/sw gamma lut values. First need to
check whether hw/sw gamma mode matches or not. If not
no need to compare lut values, if matches then only compare
lut entries.

v5: -Called PIPE_CONF_CHECK_COLOR_LUT inside if (!adjust) [Jani]
    -Added #undef PIPE_CONF_CHECK_COLOR_LUT [Jani]
v8: -Added check for gamma mode before gamma lut entry comparison
     [Jani]
    -Split patch 3 into 4 patches
Signed-off-by: NSwati Sharma <swati2.sharma@intel.com>
Reviewed-by: NUma Shankar <uma.shankar@intel.com>
Reviewed-by: NJani Nikula <jani.nikula@intel.com>
Signed-off-by: NJani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1567538578-4489-5-git-send-email-swati2.sharma@intel.com

Add func intel_color_lut_equal() to compare hw/sw gamma
lut values. Since hw/sw gamma lut sizes and lut entries comparison
will be different for different gamma modes, add gamma mode dependent
checks.

v3:  -Rebase
v4:  -Renamed intel_compare_color_lut() to intel_color_lut_equal() [Jani]
     -Added the default label above the correct label [Jani]
     -Corrected smatch warn "variable dereferenced before check"
      [Dan Carpenter]
v5:  -Added condition (!blob1 && !blob2) return true [Jani]
v6:  -Made patch11 as patch3 [Jani]
v8:  -Split patch 3 into 4 patches
     -Optimized blob check condition [Ville]
v9:  -Exclude spilt gamma mode (bdw and ivb platforms)
      as there is exception in way gamma values are written in
      hardware [Ville]
     -Added exception made in commit [Uma]
     -Dropped else, character limit and indentation [Uma]
     -Added multi segmented gama mode for icl+ platforms [Uma]
v10: -Dropped multi segmented mode for icl+ platforms [Jani]
     -Removed references of sw and hw state in compare code [Jani]
     -Dropped inline from func [Jani]
Signed-off-by: NSwati Sharma <swati2.sharma@intel.com>
Reviewed-by: NJani Nikula <jani.nikula@intel.com>
Signed-off-by: NJani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1567538578-4489-4-git-send-email-swati2.sharma@intel.com

Each platform supports different gamma modes and each gamma mode
has different bit precision. Here bit precision corresponds
to number of bits the hw LUT supports.

Add func per platform to return bit precision corresponding to gamma mode
which will be later used as a parameter in lut comparison function
intel_color_lut_equal().

This is done for legacy, ilk, glk and their variant platforms.

v6:  -Added func intel_color_get_bit_precision() to get bit precision for
      gamma and degamma lut readout depending upon platform and
      corresponding to load_luts() [Ankit]
     -Made patch11 as patch3 [Jani]
v7:  -Renamed func intel_color_get_bit_precision() to
      intel_color_get_gamma_bit_precision()
     -Added separate function/platform for gamma bit precision [Ville]
     -Corrected checkpatch warnings
v8:  -Split patch 3 into 4 separate patches
v9:  -Changed commit message, gave more info [Uma]
     -Added precision func for icl+ platform
v10: -Removed precision func for chv and icl+ platforms [Jani]
     -Added gamma_enable check once [Jani]
Signed-off-by: NSwati Sharma <swati2.sharma@intel.com>
Reviewed-by: NJani Nikula <jani.nikula@intel.com>
Signed-off-by: NJani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1567538578-4489-2-git-send-email-swati2.sharma@intel.com

Add debug log for color related parameters like gamma_mode, gamma_enable,
csc_enable, etc inside intel_dump_pipe_config().

v6: -Added debug log for color para in intel_dump_pipe_config [Jani]
v7: -Split patch 3 into 4 patches
v8: -Corrected alignment [Uma]
Signed-off-by: NSwati Sharma <swati2.sharma@intel.com>
Reviewed-by: NJani Nikula <jani.nikula@intel.com>
Signed-off-by: NJani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1567538578-4489-3-git-send-email-swati2.sharma@intel.com

It's been a long time since we accidentally reported -EIO upon wedging,
it can now only be generated by failure to swap in a page.
Signed-off-by: NChris Wilson <chris@chris-wilson.co.uk>
Cc: Abdiel Janulgue <abdiel.janulgue@linux.intel.com>
Reviewed-by: NAbdiel Janulgue <abdiel.janulgue@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190902040303.14195-4-chris@chris-wilson.co.uk

This function was never used and probably will never be used, so remove
it.
Signed-off-by: NChris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: NJoonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190901110431.12393-1-chris@chris-wilson.co.uk

obj->pin_global was originally used as a means to keep the shrinker off
the active scanout, but we use the vma->pin_count itself for that and
the obj->frontbuffer to delay shrinking active framebuffers. The other
role that obj->pin_global gained was for spotting display objects inside
GEM and working harder to keep those coherent; for which we can again
simply inspect obj->frontbuffer directly.

Coming up next, we will want to manipulate the pin_global counter
outside of the principle locks, so would need to make pin_global atomic.
However, since obj->frontbuffer is already managed atomically, it makes
sense to use that the primary key for display objects instead of having
pin_global.

Ville pointed out the principle difference is that obj->frontbuffer is
set for as long as an intel_framebuffer is attached to an object, but
obj->pin_global was only raised for as long as the object was active. In
practice, this means that we consider the object as being on the scanout
for longer than is strictly required, causing us to be more proactive in
flushing -- though it should be true that we would have flushed
eventually when the back became the front, except that on the flip path
that flush is async but when hit from another ioctl it will be
synchronous.

v2: i915_gem_object_is_framebuffer()
Signed-off-by: NChris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: NVille Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190902040303.14195-5-chris@chris-wilson.co.uk

The aliasing-ppgtt is constrained to be the same size as the Global GTT
since it aliases the same address space. Simplifying gtt size reporting
in this case.
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/20190902040303.14195-2-chris@chris-wilson.co.uk

The aliasing-ppgtt is not allowed to be smaller than the ggtt, nor
should we advertise it as being any bigger, or else we may get sued for
false advertisement.

Testcase: igt/gem_exec_big
Fixes: 0b718ba1 ("drm/i915/gtt: Downgrade Cherryview back to aliasing-ppgtt")
Signed-off-by: NChris Wilson <chris@chris-wilson.co.uk>
Cc: Matthew Auld <matthew.auld@intel.com>
Reviewed-by: NMatthew Auld <matthew.auld@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190902040303.14195-1-chris@chris-wilson.co.uk

Reogranize the HDMI deep color state computation to just
loop over possible bpc values. Avoids having to maintain
so many variants of the clock etc.

The current code also looks confused w.r.t. port_clock vs.
bw_constrained. It would happily update port_clock for
deep color but then not actually enable deep color due to
bw_constrained being set. The new logic handles that case
correctly.

v2: Pull stuff into separate funcs (Jani)
Reviewed-by: NJani Nikula <jani.nikula@intel.com>
Signed-off-by: NVille Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190828183424.7856-1-ville.syrjala@linux.intel.com

enum port is a mess now because it no longer matches the spec
at all. Let's start to dig ourselves out of this hole by
reducing our reliance on port_name(). This should at least make
a bunch of debug messages a bit more sensible while we think how
to fill the the hole properly.

Based on the following cocci script with a lot of manual cleanup
(all the format strings etc.):
@@
expression E;
@@
(
- port_name(E->port)
+ E->base.base.id, E->base.name
|
- port_name(E.port)
+ E.base.base.id, E.base.name
)

@@
enum port P;
expression E;
@@
  P = E->port
<...
- port_name(P)
+ E->base.base.id, E->base.name
...>

@@
enum port P;
expression E;
@@
  P = E.port
<...
- port_name(P)
+ E.base.base.id, E.base.name
...>

@@
expression E;
@@
{
- enum port P = E;
... when != P
}
Signed-off-by: NVille Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190830182719.32608-1-ville.syrjala@linux.intel.comReviewed-by: NChris Wilson <chris@chris-wilson.co.uk>

My attempt at allowing MST to use the higher color depths has
regressed some configurations. Apparently people have setups
where all MST streams will fit into the DP link with 8bpc but
won't fit with higher color depths.

What we really should be doing is reducing the bpc for all the
streams on the same link until they start to fit. But that requires
a bit more work, so in the meantime let's revert back closer to
the old behavior and limit MST to at most 8bpc.

Cc: stable@vger.kernel.org
Cc: Lyude Paul <lyude@redhat.com>
Tested-by: NGeoffrey Bennett <gmux22@gmail.com>
Fixes: f1477219 ("drm/i915: Remove the 8bpc shackles from DP MST")
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=111505Signed-off-by: NVille Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190828102059.2512-1-ville.syrjala@linux.intel.comReviewed-by: NLyude Paul <lyude@redhat.com>

We use the context->pin_mutex to serialise updates to the OA config and
the registers values written into each new context. Document this
relationship and assert we do hold the context->pin_mutex as used by
gen8_configure_all_contexts() to serialise updates to the OA config
itself.

v2: Add a white-lie for when we call intel_gt_resume() from init.
v3: Lie while we have the context pinned inside atomic reset.
Signed-off-by: NChris Wilson <chris@chris-wilson.co.uk>
Cc: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com> #v1
Link: https://patchwork.freedesktop.org/patch/msgid/20190830181929.18663-1-chris@chris-wilson.co.uk

The bspec was recently updated with these new cdclk values for ICL, EHL,
and TGL.

Bspec: 20598
Bspec: 49201
Cc: José Roberto de Souza <jose.souza@intel.com>
Cc: Lucas De Marchi <lucas.demarchi@intel.com>
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/20190826225540.11987-3-matthew.d.roper@intel.com

The bspec has just recently been updated with new cdclk values that
require the use of a /2 CD2X divider rather than a /1 divider.  Once we
add the divider selection logic to ICL+ cdclk programming, we have
pretty much the same logic we were already using on CNL, so it's simpler
to drop icl_set_cdclk() completely and reuse cnl_set_cdclk() on gen11+
platforms as well.

v2:
 - Using ICL_CDCLK_CD2X_PIPE_NONE + BXT_CDCLK_CD2X_PIPE(pipe) for TGL is
   correct, but looks really confusing.  Add some TGL_ macros that alias
   these to avoid confusion.  (Ville)
 - Use DIV_ROUND_CLOSEST rather than / when applying the divider. (Ville)

Cc: José Roberto de Souza <jose.souza@intel.com>
Cc: Lucas De Marchi <lucas.demarchi@intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: NMatt Roper <matthew.d.roper@intel.com>
Reviewed-by: NVille Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190830004828.19359-1-matthew.d.roper@intel.com

When we moved the code to disable crtc's to a separate patch,
we forgot to ensure that for_each_oldnew_intel_crtc_in_state_reverse()
was moved as well.
Signed-off-by: NMaarten Lankhorst <maarten.lankhorst@linux.intel.com>
Fixes: 66d9cec8 ("drm/i915/display: Move the commit_tail() disable sequence to separate function")
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Manasi Navare <manasi.d.navare@intel.com>
Cc: José Roberto de Souza <jose.souza@intel.com>
Reviewed-by: NManasi Navare <manasi.d.navare@intel.com>
Reviewed-by: NJosé Roberto de Souza <jose.souza@intel.com>
Signed-off-by: NManasi Navare <manasi.d.navare@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190830101644.8740-1-maarten.lankhorst@linux.intel.com