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Infinite waits for completion of GPU activity have been observed in CI,
mostly inside __i915_active_wait(), triggered by igt@gem_barrier_race or
igt@perf@stress-open-close. Root cause analysis, based of ftrace dumps
generated with a lot of extra trace_printk() calls added to the code,
revealed loops of request dependencies being accidentally built,
preventing the requests from being processed, each waiting for completion
of another one's activity.
After we substitute a new request for a last active one tracked on a
timeline, we set up a dependency of our new request to wait on completion
of current activity of that previous one. While doing that, we must take
care of keeping the old request still in memory until we use its
attributes for setting up that await dependency, or we can happen to set
up the await dependency on an unrelated request that already reuses the
memory previously allocated to the old one, already released. Combined
with perf adding consecutive kernel context remote requests to different
user context timelines, unresolvable loops of await dependencies can be
built, leading do infinite waits.
We obtain a pointer to the previous request to wait upon when we
substitute it with a pointer to our new request in an active tracker,
e.g. in intel_timeline.last_request. In some processing paths we protect
that old request from being freed before we use it by getting a reference
to it under RCU protection, but in others, e.g. __i915_request_commit()
-> __i915_request_add_to_timeline() -> __i915_request_ensure_ordering(),
we don't. But anyway, since the requests' memory is SLAB_FAILSAFE_BY_RCU,
that RCU protection is not sufficient against reuse of memory.
We could protect i915_request's memory from being prematurely reused by
calling its release function via call_rcu() and using rcu_read_lock()
consequently, as proposed in v1. However, that approach leads to
significant (up to 10 times) increase of SLAB utilization by i915_request
SLAB cache. Another potential approach is to take a reference to the
previous active fence.
When updating an active fence tracker, we first lock the new fence,
substitute a pointer of the current active fence with the new one, then we
lock the substituted fence. With this approach, there is a time window
after the substitution and before the lock when the request can be
concurrently released by an interrupt handler and its memory reused, then
we may happen to lock and return a new, unrelated request.
Always get a reference to the current active fence first, before
replacing it with a new one. Having it protected from premature release
and reuse, lock it and then replace with the new one but only if not
yet signalled via a potential concurrent interrupt nor replaced with
another one by a potential concurrent thread, otherwise retry, starting
from getting a reference to the new current one. Adjust users to not
get a reference to the previous active fence themselves and always put the
reference got by __i915_active_fence_set() when no longer needed.
v3: Fix lockdep splat reports and other issues caused by incorrect use of
try_cmpxchg() (use (cmpxchg() != prev) instead)
v2: Protect request's memory by getting a reference to it in favor of
delegating its release to call_rcu() (Chris)
Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/8211
Fixes: df9f85d8582e ("drm/i915: Serialise i915_active_fence_set() with itself")
Suggested-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Janusz Krzysztofik <janusz.krzysztofik@linux.intel.com>
Cc: <stable@vger.kernel.org> # v5.6+
Reviewed-by: Andi Shyti <andi.shyti@linux.intel.com>
Signed-off-by: Andi Shyti <andi.shyti@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230720093543.832147-2-janusz.krzysztofik@linux.intel.com
(cherry picked from commit 946e047a3d88d46d15b5c5af0414098e12b243f7)
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
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Perform some refactoring with the purpose of keeping in one
single place all the operations around the aux table
invalidation.
With this refactoring add more engines where the invalidation
should be performed.
Fixes: 972282c4cf24 ("drm/i915/gen12: Add aux table invalidate for all engines")
Signed-off-by: Andi Shyti <andi.shyti@linux.intel.com>
Cc: Jonathan Cavitt <jonathan.cavitt@intel.com>
Cc: Matt Roper <matthew.d.roper@intel.com>
Cc: <stable@vger.kernel.org> # v5.8+
Reviewed-by: Andrzej Hajda <andrzej.hajda@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230725001950.1014671-8-andi.shyti@linux.intel.com
(cherry picked from commit 76ff7789d6e63d1a10b3b58f5c70b2e640c7a880)
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
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For platforms that use Aux CCS, wait for aux invalidation to
complete by checking the aux invalidation register bit is
cleared.
Fixes: 972282c4cf24 ("drm/i915/gen12: Add aux table invalidate for all engines")
Signed-off-by: Jonathan Cavitt <jonathan.cavitt@intel.com>
Signed-off-by: Andi Shyti <andi.shyti@linux.intel.com>
Cc: <stable@vger.kernel.org> # v5.8+
Reviewed-by: Nirmoy Das <nirmoy.das@intel.com>
Reviewed-by: Andrzej Hajda <andrzej.hajda@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230725001950.1014671-7-andi.shyti@linux.intel.com
(cherry picked from commit d459c86f00aa98028d155a012c65dc42f7c37e76)
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
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Enable the CCS_FLUSH bit 13 in the control pipe for render and
compute engines in platforms starting from Meteor Lake (BSPEC
43904 and 47112).
For the copy engine add MI_FLUSH_DW_CCS (bit 16) in the command
streamer.
Fixes: 972282c4cf24 ("drm/i915/gen12: Add aux table invalidate for all engines")
Requires: 8da173db894a ("drm/i915/gt: Rename flags with bit_group_X according to the datasheet")
Signed-off-by: Andi Shyti <andi.shyti@linux.intel.com>
Cc: Jonathan Cavitt <jonathan.cavitt@intel.com>
Cc: Nirmoy Das <nirmoy.das@intel.com>
Cc: <stable@vger.kernel.org> # v5.8+
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Andrzej Hajda <andrzej.hajda@intel.com>
Reviewed-by: Nirmoy Das <nirmoy.das@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230725001950.1014671-6-andi.shyti@linux.intel.com
(cherry picked from commit b70df82b428774875c7c56d3808102165891547c)
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
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In preparation of the next patch align with the datasheet (BSPEC
47112) with the naming of the pipe control set of flag values.
The variable "flags" in gen12_emit_flush_rcs() is applied as a
set of flags called Bit Group 1.
Define also the Bit Group 0 as bit_group_0 where currently only
PIPE_CONTROL0_HDC_PIPELINE_FLUSH bit is set.
Signed-off-by: Andi Shyti <andi.shyti@linux.intel.com>
Cc: <stable@vger.kernel.org> # v5.8+
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Andrzej Hajda <andrzej.hajda@intel.com>
Reviewed-by: Nirmoy Das <nirmoy.das@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230725001950.1014671-5-andi.shyti@linux.intel.com
(cherry picked from commit f2dcd21d5a22e13f2fbfe7ab65149038b93cf2ff)
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
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All memory traffic must be quiesced before requesting
an aux invalidation on platforms that use Aux CCS.
Fixes: 972282c4cf24 ("drm/i915/gen12: Add aux table invalidate for all engines")
Requires: a2a4aa0eef3b ("drm/i915: Add the gen12_needs_ccs_aux_inv helper")
Signed-off-by: Jonathan Cavitt <jonathan.cavitt@intel.com>
Signed-off-by: Andi Shyti <andi.shyti@linux.intel.com>
Cc: <stable@vger.kernel.org> # v5.8+
Reviewed-by: Nirmoy Das <nirmoy.das@intel.com>
Reviewed-by: Andrzej Hajda <andrzej.hajda@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230725001950.1014671-4-andi.shyti@linux.intel.com
(cherry picked from commit ad8ebf12217e451cd19804b1c3e97ad56491c74a)
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
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We always assumed that a device might either have AUX or FLAT
CCS, but this is an approximation that is not always true, e.g.
PVC represents an exception.
Set the basis for future finer selection by implementing a
boolean gen12_needs_ccs_aux_inv() function that tells whether aux
invalidation is needed or not.
Currently PVC is the only exception to the above mentioned rule.
Requires: 059ae7ae2a1c ("drm/i915/gt: Cleanup aux invalidation registers")
Signed-off-by: Andi Shyti <andi.shyti@linux.intel.com>
Cc: Matt Roper <matthew.d.roper@intel.com>
Cc: Jonathan Cavitt <jonathan.cavitt@intel.com>
Cc: <stable@vger.kernel.org> # v5.8+
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Andrzej Hajda <andrzej.hajda@intel.com>
Reviewed-by: Nirmoy Das <nirmoy.das@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230725001950.1014671-3-andi.shyti@linux.intel.com
(cherry picked from commit c827655b87ad201ebe36f2e28d16b5491c8f7801)
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
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Fix the 'NV' definition postfix that is supposed to be INV.
Take the chance to also order properly the registers based on
their address and call the GEN12_GFX_CCS_AUX_INV address as
GEN12_CCS_AUX_INV like all the other similar registers.
Remove also VD1, VD3 and VE1 registers that don't exist and add
BCS0 and CCS0.
Signed-off-by: Andi Shyti <andi.shyti@linux.intel.com>
Cc: <stable@vger.kernel.org> # v5.8+
Reviewed-by: Nirmoy Das <nirmoy.das@intel.com>
Reviewed-by: Andrzej Hajda <andrzej.hajda@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230725001950.1014671-2-andi.shyti@linux.intel.com
(cherry picked from commit 2f0b927d3ca3440445975ebde27f3df1c3ed6f76)
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
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A very basic debugging rule when a device is connected for the first
time is to access a read-only register which contains known data in
order to ensure the communication protocol is properly working. This
driver lacked any read helper which is often a critical piece for
speeding-up bring-ups.
Add a read helper and use it to verify the communication with the panel
is working as soon as possible in order to inform the user early if this
is not the case.
As this panel may work with no MISO line, the check is discarded in this
case. Upon error, we do not fail probing but just warn the user, in case
the DT description would be lacking the Rx bus width (which is likely on
old descriptions) in order to avoid breaking existing devices.
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Acked-by: Maxime Ripard <mripard@kernel.org>
Reviewed-by: Sebastian Reichel <sre@kernel.org>
Tested-by: Sebastian Reichel <sre@kernel.org> # no MISO line
Signed-off-by: Sebastian Reichel <sre@kernel.org>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230714013756.1546769-20-sre@kernel.org
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This panel from Emerging Display Technologies Corporation features an
ST7789V2 LCD controller panel inside which is almost identical to what
the Sitronix panel driver supports.
In practice, the module physical size is specific, and experiments show
that the display will malfunction if any of the following situation
occurs:
* Pixel clock is above 3MHz
* Pixel clock is not inverted
I could not properly identify the reasons behind these failures, scope
captures show valid input signals.
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Acked-by: Maxime Ripard <mripard@kernel.org>
Reviewed-by: Sebastian Reichel <sre@kernel.org>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230714013756.1546769-19-sre@kernel.org
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The Sitronix datasheet explains BIT(1) of the RGBCTRL register as the
DOTCLK/PCLK edge used to sample the data lines:
“0” The data is input on the positive edge of DOTCLK
“1” The data is input on the negative edge of DOTCLK
IOW, this bit implies a falling edge and not a high state. Correct the
definition to ease the comparison with the datasheet.
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Acked-by: Maxime Ripard <mripard@kernel.org>
Reviewed-by: Sebastian Reichel <sre@kernel.org>
Tested-by: Sebastian Reichel <sre@kernel.org>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230714013756.1546769-18-sre@kernel.org
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The Sitronix controller expects 9-bit words, provide this as default at
probe time rather than specifying this in each and every access.
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Acked-by: Maxime Ripard <mripard@kernel.org>
Reviewed-by: Sebastian Reichel <sre@kernel.org>
Tested-by: Sebastian Reichel <sre@kernel.org>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230714013756.1546769-17-sre@kernel.org
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UNI-T UTi260b has a Inanbo T28CP45TN89 v17 panel. I could not find
proper documentation for the panel apart from a technical drawing, but
according to the vendor U-Boot it is based on a Sitronix st7789v chip.
I generated the init sequence by modifying the default one until proper
graphics output has been seen on the device.
Reviewed-by: Michael Riesch <michael.riesch@wolfvision.net>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230714013756.1546769-14-sre@kernel.org
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Add polarity information via mode and bus flags, so that they are no
longer hardcoded and forward the information to the DRM stack. This is
required for adding panels with different settings.
Reviewed-by: Michael Riesch <michael.riesch@wolfvision.net>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230714013756.1546769-13-sre@kernel.org
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While the default panel uses invert mode, some panels
require non-invert mode instead.
Reviewed-by: Michael Riesch <michael.riesch@wolfvision.net>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230714013756.1546769-12-sre@kernel.org
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Add support for describing the media bus format in the
panel configuration and expose that to userspace. Since
both supported formats (RGB565 and RGB666) are using 6
bits per color also hardcode that information.
Reviewed-by: Michael Riesch <michael.riesch@wolfvision.net>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230714013756.1546769-11-sre@kernel.org
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Move the panel size information to the mode struct, so
that different panel sizes can be specified depending
on the panel type.
Reviewed-by: Michael Riesch <michael.riesch@wolfvision.net>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230714013756.1546769-10-sre@kernel.org
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Avoid hard-coding the default_mode and supply it from match data. One
additional layer of abstraction has been introduced, which will be
needed for specifying other panel information (e.g. bus flags) in the
next steps.
Reviewed-by: Michael Riesch <michael.riesch@wolfvision.net>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230714013756.1546769-9-sre@kernel.org
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Improve error handling in the probe routine, so that probe
defer errors are captured in /sys/kernel/debug/devices_deferred
Reviewed-by: Michael Riesch <michael.riesch@wolfvision.net>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230714013756.1546769-8-sre@kernel.org
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st7789v_spi_write initializes a message with just
a single transfer, spi_sync_transfer can be used
for that.
Reviewed-by: Michael Riesch <michael.riesch@wolfvision.net>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230714013756.1546769-7-sre@kernel.org
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The reset pin might not be software controllable from the SoC,
so make it optional.
Reviewed-by: Michael Riesch <michael.riesch@wolfvision.net>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230714013756.1546769-6-sre@kernel.org
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ST7789V_COLMOD_RGB_FMT_18BITS and ST7789V_COLMOD_CTRL_FMT_18BITS
are unused in favour of MIPI_DCS_PIXEL_FMT_18BIT, remove them.
Reviewed-by: Michael Riesch <michael.riesch@wolfvision.net>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230714013756.1546769-5-sre@kernel.org
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SPI device drivers should also have a SPI ID table.
Reviewed-by: Michael Riesch <michael.riesch@wolfvision.net>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230714013756.1546769-4-sre@kernel.org
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The drm_exec tests where crashing[0] because of a null dereference. This
is caused by a new access of the `driver` attribute of `struct
drm_driver` on drm_gem_private_object_init(). Alloc the drm_device to
fix that.
[0]
[15:05:24] ================== drm_exec (6 subtests) ===================
[15:05:24] [PASSED] sanitycheck
^CERROR:root:Build interruption occurred. Cleaning console.
[15:05:50] [ERROR] Test: drm_exec: missing expected subtest!
[15:05:50] BUG: kernel NULL pointer dereference, address: 00000000000000b0
[15:05:50] #PF: supervisor read access in kernel mode
[15:05:50] #PF: error_code(0x0000) - not-present page
[15:05:50] PGD 0 P4D 0
[15:05:50] Oops: 0000 [#1] PREEMPT NOPTI
[15:05:50] CPU: 0 PID: 23 Comm: kunit_try_catch Tainted: G N 6.4.0-rc7-02032-ge6303f323b1a #69
[15:05:50] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2-1.fc37 04/01/2014
[15:05:50] RIP: 0010:drm_gem_private_object_init+0x60/0xc0
Fixes: e6303f323b1a ("drm: manager to keep track of GPUs VA mappings")
Signed-off-by: Arthur Grillo <arthurgrillo@riseup.net>
Tested-by: Danilo Krummrich <dakr@redhat.com>
Acked-by: Danilo Krummrich <dakr@redhat.com>
Reviewed-by: Maíra Canal <mcanal@igalia.com>
Signed-off-by: Maxime Ripard <mripard@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230731182241.240556-1-arthurgrillo@riseup.net
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Currently frontbuffer tracking code is directly iterating over object vmas
and clearing scanout flags for them. Add function to clear scanout flag for
vmas and use it from frontbuffer tracking code.
v2: describe function parameter.
Signed-off-by: Jouni Högander <jouni.hogander@intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Nirmoy Das <nirmoy.das@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230727064142.751976-5-jouni.hogander@intel.com
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Now as we have removed all the references to internals of i915_gem_object
from the frontbuffer header we can also remove including
i915_gem_object_types.h.
Signed-off-by: Jouni Högander <jouni.hogander@intel.com>
Reviewed-by: Jeevan B <jeevan.b@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230727064142.751976-4-jouni.hogander@intel.com
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Add getter/setter for i915_gem_object->frontbuffer and use it instead of
directly touching i915_gem_object->frontbuffer frontbuffer pointer.
v3:
- Fix intel_frontbuffer_get return value
- s/front_ret/cur/
v2: Move getter/setter into i915_gem_object.h
Signed-off-by: Jouni Högander <jouni.hogander@intel.com>
Reviewed-by: Nirmoy Das <nirmoy.das@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230727064142.751976-3-jouni.hogander@intel.com
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We want to stop touching directly i915_gem_object struct members in
intel_frontbuffer code. As a part of this we add helper macro to get i915
device from i915_gem_object.
v2: operate on and return pointer in defined macros
Signed-off-by: Jouni Högander <jouni.hogander@intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Nirmoy Das <nirmoy.das@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230727064142.751976-2-jouni.hogander@intel.com
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Msg length should be obtained from value written to AUX_CH_CTL register
rather than from enum type of the register.
Commit 0cad796a2269 ("drm/i915: Use REG_BIT() & co. for AUX CH registers")
incorrectly calculates the msg_length from reg type and yields below
warning in intel_gvt_i2c_handle_aux_ch_write():
"i915 0000:00:02.0: drm_WARN_ON(msg_length != 4)".
Fixes: 0cad796a2269 ("drm/i915: Use REG_BIT() & co. for AUX CH registers")
Signed-off-by: Yan Zhao <yan.y.zhao@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20230731112033.7275-1-yan.y.zhao@intel.com
Reviewed-by: Zhenyu Wang <zhenyuw@linux.intel.com>
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Add sync object DRM UAPI support to VirtIO-GPU driver. Sync objects
support is needed by native context VirtIO-GPU Mesa drivers, it also will
be used by Venus and Virgl contexts.
Reviewed-by; Emil Velikov <emil.velikov@collabora.com>
Signed-off-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Tested-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com> # amdgpu nctx
Tested-by: Rob Clark <robdclark@gmail.com> # freedreno nctx
Reviewed-by: Rob Clark <robdclark@gmail.com>
Acked-by: Gurchetan Singh <gurchetansingh@chromium.org>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230416115237.798604-4-dmitry.osipenko@collabora.com
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Fix the following make htmldocs errors/warnings:
./drivers/gpu/drm/i915/gt/uc/intel_huc.c:29: ERROR: Unexpected indentation.
./drivers/gpu/drm/i915/gt/uc/intel_huc.c:30: WARNING: Block quote ends without a blank line; unexpected unindent.
./drivers/gpu/drm/i915/gt/uc/intel_huc.c:35: WARNING: Bullet list ends without a blank line; unexpected unindent.
This output is a bit misleading. The real issue here is we need a blank
line before and after the bulleted list.
Link: https://www.kernel.org/doc/html/latest/gpu/i915.html#huc
Link: https://lore.kernel.org/dri-devel/20230530152958.1384061-1-daniele.ceraolospurio@intel.com/
Signed-off-by: David Reaver <me@davidreaver.com>
Reviewed-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230727025400.372965-1-me@davidreaver.com
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Deferred-I/O generator macros generate callbacks for struct fb_ops
that operate on memory ranges in I/O address space or system address
space. Rename the macros to use the _IOMEM_ and _SYSMEM_ infixes of
their underlying helpers. Adapt all users. No functional changes.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Acked-by: Helge Deller <deller@gmx.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20230729193157.15446-5-tzimmermann@suse.de
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Change the infix for fbdev's DMA-memory helpers from _DMA_ to
_DMAMEM_. The helpers perform operations within DMA-able memory,
but they don't perform DMA operations. Naming should make this
clear. Adapt all users. No functional changes.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Acked-by: Helge Deller <deller@gmx.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20230729193157.15446-4-tzimmermann@suse.de
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Change the infix for fbdev's system-memory helpers from _SYS_ to
_SYSMEM_. The helpers perform operations within system memory, but
not on the state of the operating system itself. Naming should make
this clear. Adapt all users. No functional changes.
Suggested-by: Helge Deller <deller@gmx.de>
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Acked-by: Helge Deller <deller@gmx.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20230729193157.15446-3-tzimmermann@suse.de
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Change the infix for fbdev's I/O-memory helpers from _IO_ to _IOMEM_
to distiguish them from other types of I/O, such as file operations.
The helpers operate on memory ranges in the I/O address space and the
naming should make this clear. Adapt all users. No functional changes.
Suggested-by: Helge Deller <deller@gmx.de>
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Acked-by: Helge Deller <deller@gmx.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20230729193157.15446-2-tzimmermann@suse.de
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The connector type and pixel format are missing for this panel,
add them to prevent various drivers from failing to determine
either of those parameters.
Fixes: 7ee933a1d5c4 ("drm/panel: simple: Add support for AUO T215HVN01")
Signed-off-by: Marek Vasut <marex@denx.de>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230709134914.449328-1-marex@denx.de
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This driver support the Startek KD070FHFID015, which is a 7-inch TFT LCD
display using MIPI DSI interface.
Signed-off-by: Guillaume La Roque <glaroque@baylibre.com>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: Alexandre Mergnat <amergnat@baylibre.com>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230711-startek_display-v4-2-fb1d53bfdef6@baylibre.com
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Add support for TDO TL050HDV35-H1311A LCD panel.
Signed-off-by: Matus Gajdos <matuszpd@gmail.com>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230719102616.2259-3-matuszpd@gmail.com
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Specify bpc value for the powertip_ph800480t013_idf02 panel to stop drm
code from complaining about unexpected bpc value (0).
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230727172445.1548834-1-dmitry.baryshkov@linaro.org
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The newly added driver only builds when DRM_DISPLAY_DP_HELPER is enabled:
x86_64-linux-ld: drivers/gpu/drm/panel/panel-visionox-r66451.o: in function `visionox_r66451_enable':
panel-visionox-r66451.c:(.text+0x105): undefined reference to `drm_dsc_pps_payload_pack'
Select both CONFIG_DRM_DISPLAY_DP_HELPER and CONFIG_DRM_DISPLAY_HELPER to
ensure the helper function is always available.
Fixes: a6dfab2738fc ("drm/panel: Add driver for Visionox r66451 panel")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Jessica Zhang <quic_jesszhan@quicinc.com>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230719130940.659837-1-arnd@kernel.org
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We've had a couple of tests that weren't really obvious, nor did they
document what they were supposed to test. Document that to make it
hopefully more obvious.
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Reviewed-by: Maíra Canal <mairacanal@riseup.net>
Link: https://lore.kernel.org/r/20230728-kms-kunit-actions-rework-v3-11-952565ccccfe@kernel.org
Signed-off-by: Maxime Ripard <mripard@kernel.org>
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Now that we have a helper that takes care of an atomic state allocation
and cleanup, we can migrate to it to simplify our tests.
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Reviewed-by: Maíra Canal <mairacanal@riseup.net>
Link: https://lore.kernel.org/r/20230728-kms-kunit-actions-rework-v3-10-952565ccccfe@kernel.org
Signed-off-by: Maxime Ripard <mripard@kernel.org>
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The new helper to init the locking context allows to remove some
boilerplate.
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Reviewed-by: Maíra Canal <mairacanal@riseup.net>
Link: https://lore.kernel.org/r/20230728-kms-kunit-actions-rework-v3-9-952565ccccfe@kernel.org
Signed-off-by: Maxime Ripard <mripard@kernel.org>
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The *_mock_device functions allocate a DRM device that needs to be
released using drm_dev_unregister.
Now that we have a kunit release action API, we can switch to it and
don't require any kind of garbage collection from the caller.
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Reviewed-by: Maíra Canal <mairacanal@riseup.net>
Link: https://lore.kernel.org/r/20230728-kms-kunit-actions-rework-v3-8-952565ccccfe@kernel.org
Signed-off-by: Maxime Ripard <mripard@kernel.org>
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Calling drm_kunit_helper_free_device() to clean up the resources
allocated by drm_kunit_helper_alloc_device() is now optional and not
needed in most cases.
Remove it.
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Reviewed-by: Maíra Canal <mairacanal@riseup.net>
Link: https://lore.kernel.org/r/20230728-kms-kunit-actions-rework-v3-7-952565ccccfe@kernel.org
Signed-off-by: Maxime Ripard <mripard@kernel.org>
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As we gain more tests, boilerplate to allocate an atomic state and free
it starts to be there more and more as well.
In order to reduce the allocation boilerplate, we can create a helper
to create that atomic state, and call an action when the test is done.
This will also clean up the exit path.
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Reviewed-by: Maíra Canal <mairacanal@riseup.net>
Link: https://lore.kernel.org/r/20230728-kms-kunit-actions-rework-v3-6-952565ccccfe@kernel.org
Signed-off-by: Maxime Ripard <mripard@kernel.org>
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As we get more and more tests, the locking context initialisation
creates more and more boilerplate, both at creation and destruction.
Let's create a helper that will allocate, initialise a context, and
register kunit actions to clean up once the test is done.
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Reviewed-by: Maíra Canal <mairacanal@riseup.net>
Link: https://lore.kernel.org/r/20230728-kms-kunit-actions-rework-v3-5-952565ccccfe@kernel.org
Signed-off-by: Maxime Ripard <mripard@kernel.org>
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Calling drm_kunit_helper_free_device() to clean up the resources
allocated by drm_kunit_helper_alloc_device() is now optional and not
needed in most cases.
Remove it.
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Reviewed-by: Maíra Canal <mairacanal@riseup.net>
Link: https://lore.kernel.org/r/20230728-kms-kunit-actions-rework-v3-4-952565ccccfe@kernel.org
Signed-off-by: Maxime Ripard <mripard@kernel.org>
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Calling drm_kunit_helper_free_device() to clean up the resources
allocated by drm_kunit_helper_alloc_device() is now optional and not
needed in most cases.
Remove it.
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Reviewed-by: Maíra Canal <mairacanal@riseup.net>
Link: https://lore.kernel.org/r/20230728-kms-kunit-actions-rework-v3-3-952565ccccfe@kernel.org
Signed-off-by: Maxime Ripard <mripard@kernel.org>
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Calling drm_kunit_helper_free_device() to clean up the resources
allocated by drm_kunit_helper_alloc_device() is now optional and not
needed in most cases.
Remove it.
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Reviewed-by: Maíra Canal <mairacanal@riseup.net>
Link: https://lore.kernel.org/r/20230728-kms-kunit-actions-rework-v3-2-952565ccccfe@kernel.org
Signed-off-by: Maxime Ripard <mripard@kernel.org>
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