Dan Carpenter [Wed, 23 Sep 2015 11:00:12 +0000 (14:00 +0300)]
drm/amdgpu: integer overflow in amdgpu_info_ioctl()
The "alloc_size" calculation can overflow leading to memory corruption.
Reviewed-by: Christian König <christian.koenig@amd.com> Reported-by: Ilja Van Sprundel <ivansprundel@ioactive.com> Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Dan Carpenter [Wed, 23 Sep 2015 10:59:28 +0000 (13:59 +0300)]
drm/amdgpu: unwind properly in amdgpu_cs_parser_init()
The amdgpu_cs_parser_init() function doesn't clean up after itself but
instead the caller uses a free everything function amdgpu_cs_parser_fini()
on failure. This style of error handling is often buggy. In this
example, we call "drm_free_large(parser->chunks[i].kdata);" when it is
an unintialized pointer or when "parser->chunks" is NULL.
I fixed this bug by adding unwind code so that it frees everything that
it allocates.
I also mode some other very minor changes:
1) Renamed "r" to "ret".
2) Moved the chunk_array allocation to the start of the function.
3) Removed some initializers which are no longer needed.
Reviewed-by: Christian König <christian.koenig@amd.com> Reported-by: Ilja Van Sprundel <ivansprundel@ioactive.com> Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com> Reviewed-by: Jammy Zhou <Jammy.Zhou@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Cc: stable@vger.kernel.org
Signed-off-by: Andrzej Hajda <a.hajda@samsung.com> Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
drm/amdgpu: refine the scheduler job type conversion
Use container_of rather than casting.
Reviewed-by: Christian König <christian.koenig@amd.com> Reviewed-by: David Zhou <david1.zhou@amd.com> Signed-off-by: Junwei Zhang <Jerry.Zhang@amd.com>
drm/amdgpu: refine the job naming for amdgpu_job and amdgpu_sched_job
Use consistent naming across functions.
Reviewed-by: Christian König <christian.koenig@amd.com> Reviewed-by: David Zhou <david1.zhou@amd.com> Signed-off-by: Junwei Zhang <Jerry.Zhang@amd.com>
Christian König [Fri, 4 Sep 2015 08:47:56 +0000 (10:47 +0200)]
drm/amdgpu: use only one reservation object for each VM v2
Reduces the locking and fencing overhead.
v2: add comment why we need the duplicates list in the GEM op.
Signed-off-by: Christian König <christian.koenig@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Reviewed-by: Jammy Zhou <Jammy.Zhou@amd.com>
Christian König [Thu, 3 Sep 2015 14:40:39 +0000 (16:40 +0200)]
drm/amdgpu: validate duplicates in the CS as well
This allows for multiple BOs to have the same reservation object.
Signed-off-by: Christian König <christian.koenig@amd.com> Reviewed-by: Jammy Zhou <Jammy.Zhou@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Christian König <christian.koenig@amd.com> Reviewed-by: Jammy Zhou <Jammy.Zhou@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Insert wait for reg mem after EOP to fix potential issue with vm context switch
v2: move wait to vm_flush() use equal instead of greater than.
Signed-off-by: Anatoli Antonovitch <anatoli.antonovitch@amd.com> Signed-off-by: Christian König <christian.koenig@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Dave Airlie [Fri, 11 Sep 2015 04:38:36 +0000 (14:38 +1000)]
Merge branch 'linux-4.3' of git://anongit.freedesktop.org/git/nouveau/linux-2.6 into drm-next
three nouveau regression fixes.
* 'linux-4.3' of git://anongit.freedesktop.org/git/nouveau/linux-2.6:
drm/nouveau/device: enable c800 quirk for tecra w50
drm/nouveau/clk/gt215: Unbreak engine pausing for GT21x/MCP7x
drm/nouveau/gr/nv04: fix big endian setting on gr context
Dave Airlie [Fri, 11 Sep 2015 00:52:37 +0000 (10:52 +1000)]
Merge tag 'topic/drm-fixes-2015-09-09' of git://anongit.freedesktop.org/drm-intel into drm-next
bunch of drm fixes.
* tag 'topic/drm-fixes-2015-09-09' of git://anongit.freedesktop.org/drm-intel:
drm/dp: Add dp_aux_i2c_speed_khz module param to set the assume i2c bus speed
drm/dp: Adjust i2c-over-aux retry count based on message size and i2c bus speed
drm/dp: Define AUX_RETRY_INTERVAL as 500 us
drm/atomic: Fix bookkeeping with TEST_ONLY, v3.
Dave Airlie [Fri, 11 Sep 2015 00:52:08 +0000 (10:52 +1000)]
Merge tag 'drm-intel-next-fixes-2015-09-10' of git://anongit.freedesktop.org/drm-intel into drm-next
Fixes headed for v4.3-rc1, including Maarten's DP MST state checker fix
you requested.
* tag 'drm-intel-next-fixes-2015-09-10' of git://anongit.freedesktop.org/drm-intel:
drm/i915: Allow DSI dual link to be configured on any pipe
drm/i915: Don't try to use DDR DVFS on CHV when disabled in the BIOS
drm/i915: Fix CSR MMIO address check
drm/i915: Limit the number of loops for reading a split 64bit register
drm/i915: Fix broken mst get_hw_state.
drm/i915: Pass hpd_status_i915[] to intel_get_hpd_pins() in pre-g4x
uapi/drm/i915_drm.h: fix userspace compilation.
drm/i915: Always mark the object as dirty when used by the GPU
Jonathon Jongsma [Thu, 20 Aug 2015 19:04:32 +0000 (14:04 -0500)]
drm/qxl: validate monitors config modes
Due to some recent changes in
drm_helper_probe_single_connector_modes_merge_bits(), old custom modes
were not being pruned properly. In current kernels,
drm_mode_validate_basic() is called to sanity-check each mode in the
list. If the sanity-check passes, the mode's status gets set to to
MODE_OK. In older kernels this check was not done, so old custom modes
would still have a status of MODE_UNVERIFIED at this point, and would
therefore be pruned later in the function.
As a result of this new behavior, the list of modes for a device always
includes every custom mode ever configured for the device, with the
largest one listed first. Since desktop environments usually choose the
first preferred mode when a hotplug event is emitted, this had the
result of making it very difficult for the user to reduce the size of
the display.
The qxl driver did implement the mode_valid connector function, but it
was empty. In order to restore the old behavior where old custom modes
are pruned, we implement a proper mode_valid function for the qxl
driver. This function now checks each mode against the last configured
custom mode and the list of standard modes. If the mode doesn't match
any of these, its status is set to MODE_BAD so that it will be pruned as
expected.
Signed-off-by: Jonathon Jongsma <jjongsma@redhat.com> Cc: stable@vger.kernel.org Signed-off-by: Dave Airlie <airlied@redhat.com>
Gaurav K Singh [Mon, 3 Aug 2015 10:15:32 +0000 (15:45 +0530)]
drm/i915: Allow DSI dual link to be configured on any pipe
Just like single link MIPI panels, similarly for dual link panels, pipe
to be configured is based on the DVO port from VBT Block 2. In hardware,
Port A is mapped with Pipe A and Port C is mapped with Pipe B.
Ville Syrjälä [Tue, 8 Sep 2015 18:05:12 +0000 (21:05 +0300)]
drm/i915: Don't try to use DDR DVFS on CHV when disabled in the BIOS
If one disables DDR DVFS in the BIOS, Punit will apparently ignores
all DDR DVFS request. Currently we assume that DDR DVFS is always
operational, which leads to errors in dmesg when the DDR DVFS requests
time out.
Fix the problem by gently prodding Punit during driver load to find out
whether it will respond to DDR DVFS requests. If the request times out,
we assume that DDR DVFS has been permanenly disabled in the BIOS and
no longer perster the Punit about it.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=91629 Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Reviewed-by: Clint Taylor <Clinton.A.Taylor@intel.com> Tested-by: Clint Taylor <Clinton.A.Taylor@intel.com> Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Fix a wrong logical AND (&&) used for the range check of CSR MMIO.
Spotted nicely by gcc -Wlogical-op flag:
drivers/gpu/drm/i915/intel_csr.c: In function ‘finish_csr_load’:
drivers/gpu/drm/i915/intel_csr.c:353:41: warning: logical ‘and’ of mutually exclusive tests is always false [-Wlogical-op]
Fixes: eb805623d8b1 ('drm/i915/skl: Add support to load SKL CSR firmware.') Cc: <stable@vger.kernel.org> # v4.2 Signed-off-by: Takashi Iwai <tiwai@suse.de> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Reviewed-by: Animesh Manna <animesh.manna@intel.com> Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Chris Wilson [Tue, 8 Sep 2015 13:17:13 +0000 (14:17 +0100)]
drm/i915: Limit the number of loops for reading a split 64bit register
In I915_READ64_2x32 we attempt to read a 64bit register using 2 32bit
reads. Due to the nature of the registers we try to read in this manner,
they may increment between the two instruction (e.g. a timestamp
counter). To keep the result accurate, we repeat the read if we detect
an overflow (i.e. the upper value varies). However, some hardware is just
plain flaky and may endless loop as the the upper 32bits are not stable.
Just give up after a couple of tries and report whatever we read last.
v2: Use the most recent values when erring out on an unstable register.
Reported-by: russianneuromancer@ya.ru
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=91906 Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Michał Winiarski <michal.winiarski@intel.com> Cc: Daniel Vetter <daniel.vetter@ffwll.ch> Cc: Jani Nikula <jani.nikula@linux.intel.com> Cc: stable@vger.kernel.org Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Jani Nikula <jani.nikula@intel.com>
connector->encoder is initialized as NULL. Fix this by setting it in
during pre enable. MST connectors are not read out during initial hw
readout, and have no fixed encoder mappings. So it's harmless to
return false when the connector has never been assigned to an encoder.
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Reviewed-by: Ander Conselvan de Oliveira <conselvan2@gmail.com> Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Dave Airlie [Fri, 4 Sep 2015 21:46:09 +0000 (07:46 +1000)]
Merge branch 'drm-next-4.3' of git://people.freedesktop.org/~agd5f/linux into drm-next
A few more fixes for amdgpu from the last few days:
- Fix several copy paste typos
- Resume from suspend fixes for VCE
- Fix the GPU scheduler warning in kfifo_out
- Re-enable GPUVM fault interrupts which were inadvertently disabled
- GPUVM page table hang fix when paging
* 'drm-next-4.3' of git://people.freedesktop.org/~agd5f/linux:
drm/amdgpu: rename gmc_v8_0_init_compute_vmid
drm/amdgpu: fix vce3 instance handling
drm/amdgpu: remove ib test for the second VCE Ring
drm/amdgpu: properly enable VM fault interrupts
drm/amdgpu: fix warning in scheduler
drm/amdgpu: fix buffer placement under memory pressure
drm/amdgpu/cz: fix cz_dpm_update_low_memory_pstate logic
drm/amdgpu: fix typo in dce11 watermark setup
drm/amdgpu: fix typo in dce10 watermark setup
drm/amdgpu: use top down allocation for non-CPU accessible vram
drm/amdgpu: be explicit about cpu vram access for driver BOs (v2)
Leo Liu [Fri, 4 Sep 2015 19:08:55 +0000 (15:08 -0400)]
drm/amdgpu: remove ib test for the second VCE Ring
it seems the VCE ring 1 ib test not reliable, remove it for now.
Signed-off-by: Leo Liu <leo.liu@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Reviewed-by: Christian König <christian.koenig@amd.com> Tested-and-Reviewed-by: Sonny Jiang <sonny.jiang@amd.com>
Dave Airlie [Fri, 4 Sep 2015 03:09:20 +0000 (13:09 +1000)]
Merge tag 'drm-intel-next-fixes-2015-09-02' of git://anongit.freedesktop.org/drm-intel into drm-next
i915 display fixes headed for v4.3. Mostly SKL, but some regression
fixes too.
* tag 'drm-intel-next-fixes-2015-09-02' of git://anongit.freedesktop.org/drm-intel:
i915: Set ddi_pll_sel in DP MST path
drm/i915: Don't use link_bw for PLL setup
drm/i915: Preserve SSC earlier
drm/i915/skl: Adding DDI_E power well domain
drm/i915: eDP can be present on DDI-E
drm/i915/skl: Enable DDI-E
drm/i915: Enable HDMI on DDI-E
drm/i915: apply the PCI_D0/D3 hibernation workaround everywhere on pre GEN6
drm/i915: Check DP link status on long hpd too
drm/i915: set CDCLK if DPLL0 enabled during resuming from S3
Dave Airlie [Fri, 4 Sep 2015 03:08:08 +0000 (13:08 +1000)]
Merge tag 'vmwgfx-next-15-09-01' of git://people.freedesktop.org/~thomash/linux into drm-next
Pull request of 2015-09-01
A single commit. Workaround for
https://bugzilla.redhat.com/show_bug.cgi?id=1227193
* tag 'vmwgfx-next-15-09-01' of git://people.freedesktop.org/~thomash/linux:
drm/vmwgfx: Allow dropped masters render-node like access on legacy nodes v2
Dave Airlie [Fri, 4 Sep 2015 03:07:18 +0000 (13:07 +1000)]
Merge branch 'exynos-drm-next' of git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos into drm-next
This is a last pull request, which includes two g2d patches
I missed, and more cleanup series of Exynos drm driver.
The cleanup series makes Exynos drm driver more simple,
and removes unnecessary codes, and considers multiple plane format
of framebuffer. I hope this not to be late.
* 'exynos-drm-next' of git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos:
drm/exynos: remove buf_cnt from struct exynos_drm_fb
drm/exynos: remove exynos_drm_fb_get_buf_cnt()
drm/exynos: cleanup exynos_user_fb_create()
drm/exynos: update exynos_drm_framebuffer_init() for multiple buffers
drm/exynos: cleanup to get gem object for fb
drm/exynos: update fb_info via only one function
drm/exynos: cleanup exynos_drm_fbdev_update()
drm/exynos: s/exynos_gem_obj/obj in exynos_drm_fbdev.c
drm/exynos: remove exynos_drm_fb_set_buf_cnt()
drm/exynos: remove superfluous checks in g2d_check_reg_offset()
drm/exynos: fix size check in g2d_check_buf_desc_is_valid()
Dave Airlie [Fri, 4 Sep 2015 03:06:29 +0000 (13:06 +1000)]
Merge branch 'drm-next-4.3' of git://people.freedesktop.org/~agd5f/linux into drm-next
More fixes for radeon and amdgpu for 4.3:
- Send full DP aux address fixes for radeon and amdgpu
- Fix an HDMI display regression for pre-DCE5 parts
- UVD suspend fixes for amdgpu
- Add an rs480 suspend quirk
- Fix bo reserve handling in amdgpu GEM_OP ioctl
- GPU scheduler fixes
- SDMA optimizations
- MEC fix for Fiji
* 'drm-next-4.3' of git://people.freedesktop.org/~agd5f/linux: (21 commits)
drm/amdgpu: set MEC doorbell range for Fiji
drm/amdgpu: implement burst NOP for SDMA
drm/amdgpu: add insert_nop ring func and default implementation
drm/amdgpu: add amdgpu_get_sdma_instance helper function
drm/amdgpu: add AMDGPU_MAX_SDMA_INSTANCES
drm/amdgpu: add burst_nop flag for sdma
drm/amdgpu: add count field for the SDMA NOP packet v2
drm/amdgpu: use PT for VM sync on unmap
drm/amdgpu: make wait_event uninterruptible in push_job
drm/amdgpu: fix amdgpu_bo_unreserve order in GEM_OP IOCTL v2
drm/amdgpu: partially revert "modify amdgpu_fence_wait_any() to amdgpu_fence_wait_multiple()" v2
Add radeon suspend/resume quirk for HP Compaq dc5750.
drm/amdgpu: re-work sync_resv
drm/amdgpu/atom: Send out the full AUX address
drm/radeon/native: Send out the full AUX address
drm/radeon/atom: Send out the full AUX address
drm/amdgpu: use IB for fill_buffer instead of direct command
drm/amdgpu: stop trying to suspend UVD sessions v2
drm/amdgpu: add scheduler dependency callback v2
drm/amdgpu: let the scheduler work more with jobs v2
...
Signed-off-by: Christian König <christian.koenig@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Reviewed-by: Jammy Zhou <Jammy.Zhou@amd.com>
Alex Deucher [Thu, 27 Aug 2015 04:14:16 +0000 (00:14 -0400)]
drm/amdgpu: be explicit about cpu vram access for driver BOs (v2)
For kernel driver BOs, be explicit about whether we need
vram access up front. This avoids unecessary migrations and
avoids using visible vram for buffers were it's not needed.
v2: line wrap fixes
Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Christian König [Wed, 2 Sep 2015 16:14:57 +0000 (12:14 -0400)]
drm/amdgpu: partially revert "modify amdgpu_fence_wait_any() to amdgpu_fence_wait_multiple()" v2
That isn't used any more.
v2: rebase
Signed-off-by: Christian König <christian.koenig@amd.com> Reviewed-by: Chunming Zhou <david1.zhou@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Jeffery Miller [Tue, 1 Sep 2015 15:23:02 +0000 (11:23 -0400)]
Add radeon suspend/resume quirk for HP Compaq dc5750.
With the radeon driver loaded the HP Compaq dc5750
Small Form Factor machine fails to resume from suspend.
Adding a quirk similar to other devices avoids
the problem and the system resumes properly.
Signed-off-by: Jeffery Miller <jmiller@neverware.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Cc: stable@vger.kernel.org
Alex Deucher [Mon, 31 Aug 2015 15:08:44 +0000 (11:08 -0400)]
drm/amdgpu/atom: Send out the full AUX address
AUX addresses are 20 bits long. Send out the entire address instead of
just the low 16 bits.
Port of:
drm/radeon/atom: Send out the full AUX address
to amdgpu
Reviewed-by: Jammy Zhou <Jammy.Zhou@amd.com> Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Cc: stable@vger.kernel.org
The exynos_drm_fb_set_buf_cnt() is used to set buffer count only in
exynos_drm_fbdev_update(). This patch sets directly buffer count in
exynos_drm_framebuffer_init() without using exynos_drm_fb_set_buf_cnt(),
so there is no any reason to keep exynos_drm_fb_set_buf_cnt().
Tobias Jakobi [Mon, 17 Aug 2015 22:51:24 +0000 (00:51 +0200)]
drm/exynos: fix size check in g2d_check_buf_desc_is_valid()
The size check was incomplete. It only computed the
size of area of the drawing rectangle and checked if
the size still fit inside the buffer.
The correct check is to compute the position of the
last byte that the G2D engine is going to access and
then check if that position is still contained in the
buffer. In particular we need the stride information
to determine this.
Ville Syrjälä [Thu, 27 Aug 2015 20:56:12 +0000 (23:56 +0300)]
drm/i915: Pass hpd_status_i915[] to intel_get_hpd_pins() in pre-g4x
Pass the correct hpd[] array to intel_get_hpd_pins() on pre-g4x
platforms.
This got broken in the following commit:
commit fd63e2a972c670887e5e8a08440111d3812c0996
Author: Imre Deak <imre.deak@intel.com>
Date: Tue Jul 21 15:32:44 2015 -0700
drm/i915: combine i9xx_get_hpd_pins and pch_get_hpd_pins
Cc: Imre Deak <imre.deak@intel.com> Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Reviewed-by: Egbert Eich <eich@suse.de> Signed-off-by: Jani Nikula <jani.nikula@intel.com>
drm/i915: Use expcitly fixed type in compat32 structs
changed the type of param field in drm_i915_getparam from int to
s32. This header is exported to userspace and needs to use userspace
type __s32 instead.
This fixes userspace compilation errors like the following:
include/drm/i915_drm.h:361:2: error: unknown type name 's32'
s32 param;
Signed-off-by: Artem Savkov <asavkov@redhat.com> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Chris Wilson [Mon, 31 Aug 2015 14:10:39 +0000 (15:10 +0100)]
drm/i915: Always mark the object as dirty when used by the GPU
There have been many hard to track down bugs whereby userspace forgot to
flag a write buffer and then cause graphics corruption or a hung GPU
when that buffer was later purged under memory pressure (as the buffer
appeared clean, its pages would have been evicted rather than preserved
and any changes more recent than in the backing storage would be lost).
In retrospect this is a rare optimisation against memory pressure,
already the slow path. If we always mark the buffer as dirty when
accessed by the GPU, anything not used can still be evicted cheaply
(ideal behaviour for mark-and-sweep eviction) but we do not run the risk
of corruption. For correct read serialisation, userspace still has to
notify when the GPU writes to an object. However, there are certain
situations under which userspace may wish to tell white lies to the
kernel...
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Daniel Vetter <daniel.vetter@ffwll.ch> Cc: Kristian Høgsberg <krh@bitplanet.net> Cc: Jesse Barnes <jbarnes@virtuousgeek.org> Cc: "Goel, Akash" <akash.goel@intel.co> Cc: Michał Winiarski <michal.winiarski@intel.com> Cc: stable@vger.kernel.org Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Ville Syrjälä [Wed, 26 Aug 2015 19:55:07 +0000 (22:55 +0300)]
drm/dp: Add dp_aux_i2c_speed_khz module param to set the assume i2c bus speed
To help with debugging i2c-over-aux issues, add a module parameter than
can be used to tweak the assumed i2c bus speed, and thus the maximum
number of retries we will do for each aux message.
Cc: Simon Farnsworth <simon.farnsworth@onelan.com> Cc: moosotc@gmail.com Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Reviewed-by: Simon Farnsworth <simon.farnsworth@onelan.com> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Ville Syrjälä [Tue, 1 Sep 2015 17:12:54 +0000 (20:12 +0300)]
drm/dp: Adjust i2c-over-aux retry count based on message size and i2c bus speed
Calculate the number of retries we should do for each i2c-over-aux
message based on the time it takes to perform the i2c transfer vs. the
aux transfer. We assume the shortest possible length for the aux
transfer, and the longest possible (exluding clock stretching) for the
i2c transfer.
The DP spec has some examples on how to calculate this, but we don't
calculate things quite the same way. The spec doesn't account for the
retry interval (assumes immediate retry on defer), and doesn't assume
the best/worst case behaviour as we do.
Note that currently we assume 10 kHz speed for the i2c bus. Some real
world devices (eg. some Apple DP->VGA dongle) fails with less than 16
retries. and that would correspond to something close to 15 kHz (with
our method of calculating things) But let's just go for 10 kHz to be
on the safe side. Ideally we should query/set the i2c bus speed via
DPCD but for now this should at leaast remove the regression from the
1->16 byte trasnfer size change. And of course if the sink completes
the transfer quicker this shouldn't slow things down since we don't
change the interval between retries.
I did a few experiments with a DP->DVI dongle I have that allows you
to change the i2c bus speed. Here are the results of me changing the
actual bus speed and the assumed bus speed and seeing when we start
to fail the operation:
actual i2c khz assumed i2c khz max retries
1 1 ok -> 2 fail 211 ok -> 106 fail
5 8 ok -> 9 fail 27 ok -> 24 fail
10 17 ok -> 18 fail 13 ok -> 12 fail
100 210 ok -> 211 fail 2 ok -> 1 fail
So based on that we have a fairly decent safety margin baked into
the formula to calculate the max number of retries.
Fixes a regression with some DP dongles from:
commit 1d002fa720738bcd0bddb9178e9ea0773288e1dd
Author: Simon Farnsworth <simon.farnsworth@onelan.co.uk>
Date: Tue Feb 10 18:38:08 2015 +0000
drm/dp: Use large transactions for I2C over AUX
v2: Use best case for AUX and worst case for i2c (Simon Farnsworth)
Add a define our AUX retry interval and account for it
v3: Make everything usecs to avoid confusion about units (Daniel)
Add a comment reminding people about the AUX bitrate (Daniel)
Use DIV_ROUND_UP() since we're after the "worst" case for i2c
Cc: Simon Farnsworth <simon.farnsworth@onelan.com> Cc: moosotc@gmail.com Tested-by: moosotc@gmail.com
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=91451 Reviewed-by: Simon Farnsworth <simon.farnsworth@onelan.com> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Ville Syrjälä [Wed, 26 Aug 2015 19:55:05 +0000 (22:55 +0300)]
drm/dp: Define AUX_RETRY_INTERVAL as 500 us
Currently we react to native and i2c defers by waiting either 400-500 us
or 500-600 us, depending on which code path we take. Consolidate them
all to one define AUX_RETRY_INTERVAL which defines the minimum interval.
Since we've been using two different intervals pick the longer of them
and define AUX_RETRY_INTERVAL as 500 us. For the maximum just use
AUX_RETRY_INTERVAL+100 us.
I want to have a define for this so that I can use it when calculating
the estimated duration of i2c-over-aux transfers. Without a define it
would be very easy to change the sleep duration and neglect to update
the i2c-over-aux estimates.
Cc: Simon Farnsworth <simon.farnsworth@onelan.com> Cc: moosotc@gmail.com Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Reviewed-by: Simon Farnsworth <simon.farnsworth@onelan.com> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Jani Nikula <jani.nikula@intel.com>
The DP MST encoder config function never sets ddi_pll_sel, even though
its value is programmed in its ->pre_enable() hook. That used to work
because a new pipe_config was kzalloc'ed at every modeset, and the value
of zero selects the highest clock for the PLL. Starting with the commit
below, the value of ddi_pll_sel is preserved through modesets, and since
the correct value wasn't properly setup by the MST code, it could lead
to warnings and blank screens.
commit 8504c74c7ae48b4b8ed1f1c0acf67482a7f45c93
Author: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com>
Date: Fri May 15 11:51:50 2015 +0300
drm/i915: Preserve ddi_pll_sel when allocating new pipe_config
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=91628 Cc: stable@vger.kernel.org # 7e6313a2516d drm/i915: Don't use link_bw for PLL setup Cc: stable@vger.kernel.org Cc: Timo Aaltonen <tjaalton@ubuntu.com> Cc: Luciano Coelho <luciano.coelho@intel.com> Signed-off-by: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com> Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Ville Syrjälä [Tue, 11 Aug 2015 17:21:46 +0000 (20:21 +0300)]
drm/i915: Don't use link_bw for PLL setup
Use port_clock instead of link_bw when picking the PLL parameters for
DP. link_bw may be zero with an eDP 1.4 sink that supports
DP_LINK_RATE_SET so we shouldn't use it for anything other than feed it
to the sink appropriately.
v2: Fix typo in commit message (Sivakumar)
Reviewed-by: Sivakumar Thulasimani <sivakumar.thulasimani@intel.com> Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
[Jani: cherry-picked from future.] Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Thomas Hellstrom [Thu, 27 Aug 2015 17:06:24 +0000 (10:06 -0700)]
drm/vmwgfx: Allow dropped masters render-node like access on legacy nodes v2
Applications like gnome-shell may try to render after dropping master
privileges. Since the driver should now be safe against this scenario,
allow those applications to use their legacy node like a render node.
v2: Add missing return statement.
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com> Reviewed-by: Sinclair Yeh <syeh@vmware.com>
Commit ec9f932ed41622d120de52a5b525e4d77b9ef17e
"drm/atomic: Cleanup on error properly in the atomic ioctl."
cleaned up some error paths, but didn't fix the TEST_ONLY path.
In the check only case plane->fb shouldn't be updated, and
the vblank events should be cleared as on failure.
Changes since v1:
- Fix -EDEADLK handling of vblank events too.
- Free state last with CHECK_ONLY.
Changes since v2:
- Add comment about freeing crtc_state->event with TEST_ONLY.
(Daniel Stone)
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Reviewed-by: Daniel Stone <daniels@collabora.com> Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Commit 92122789b2d6 ("drm/i915: preserve SSC if previously set v3")
added code to intel_modeset_gem_init to override the SSC status read
from VBT with the SSC status set by BIOS.
However, intel_modeset_gem_init is invoked *after* intel_modeset_init,
which calls intel_setup_outputs, which *modifies* SSC status by way of
intel_init_pch_refclk. So unlike advertised, intel_modeset_gem_init
doesn't preserve the SSC status set by BIOS but whatever
intel_init_pch_refclk decided on.
This is a problem on dual gpu laptops such as the MacBook Pro which
require either a handler to switch DDC lines, or the discrete gpu
to proxy DDC/AUX communication: Both the handler and the discrete
gpu may initialize after the i915 driver, and consequently, an LVDS
connector may initially seem disconnected and the SSC therefore
is disabled by intel_init_pch_refclk, but on reprobe the connector
may turn out to be connected and the SSC must then be enabled.
Due to 92122789b2d6 however, the SSC is not enabled on reprobe since
it is assumed BIOS disabled it while in fact it was disabled by
intel_init_pch_refclk.
Also, because the SSC status is preserved so late, the preserved value
only ever gets used on resume but not on panel initialization:
intel_modeset_init calls intel_init_display which indirectly calls
intel_panel_use_ssc via multiple subroutines, *before* the BIOS value
overrides the VBT value in intel_modeset_gem_init (intel_panel_use_ssc
is the sole user of dev_priv->vbt.lvds_use_ssc).
Fix this by moving the code introduced by 92122789b2d6 from
intel_modeset_gem_init to intel_modeset_init before the invocation
of intel_setup_outputs and intel_init_display.
Add a DRM_DEBUG_KMS as suggested way back by Jani:
http://lists.freedesktop.org/archives/intel-gfx/2014-June/046666.html
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=88861
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=61115 Tested-by: Paul Hordiienko <pvt.gord@gmail.com>
[MBP 6,2 2010 intel ILK + nvidia GT216 pre-retina] Tested-by: William Brown <william@blackhats.net.au>
[MBP 8,2 2011 intel SNB + amd turks pre-retina] Tested-by: Lukas Wunner <lukas@wunner.de>
[MBP 9,1 2012 intel IVB + nvidia GK107 pre-retina] Tested-by: Bruno Bierbaumer <bruno@bierbaumer.net>
[MBP 11,3 2013 intel HSW + nvidia GK107 retina -- work in progress] Fixes: 92122789b2d6 ("drm/i915: preserve SSC if previously set v3") Signed-off-by: Lukas Wunner <lukas@wunner.de> Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Rodrigo Vivi [Sat, 8 Aug 2015 00:35:21 +0000 (17:35 -0700)]
drm/i915/skl: Enable DDI-E
There are OEMs using DDI-E out there,
so let's enable it.
Unfortunately there is no detection bit for DDI-E
So we need to rely on VBT for that.
I also need to give credits to Xiong since before seing
his approach to check info->support_* I was creating an ugly
vbt->ddie_sfuse_strap in order to propagate the ddi presence info
v2: Rebased as last patch in the series. since all other patches
in this series are needed for anything working propperly on DDI-E.
drm/i915: gen4: work around hang during hibernation
using an explicit blacklist for the GENs/BIOS vendors where the issue was
reported. Later there we had reports of the same failure on platforms not on
this list.
To my best knowledge the correct thing to do is still to put the device to PCI
D3 state during hibernation, see [1] and [2] for the reasons. This also aligns
with our future plans to unify more the runtime and system suspend/resume
paths. Since an exact blacklist seems to be impractical (multiple GENs and
BIOS vendors are affected) apply the workaround on everything pre GEN6.
Ville Syrjälä [Thu, 20 Aug 2015 16:37:29 +0000 (19:37 +0300)]
drm/i915: Check DP link status on long hpd too
We are no longer checkling the DP link status on long hpd. We used to do
that from the .hot_plug() handler, but it was removed when MST got
introduced.
If there's no userspace we now fail to retrain the link if the sink
power is toggled (or cable yanked and replugged), meaning the user is
left staring at a blank screen. With the retraining put back that should
be fixed.
Also remove the leftover comment that referred to the old retraining
from .hot_plug().
Dave Airlie [Mon, 31 Aug 2015 00:25:45 +0000 (10:25 +1000)]
Merge branch 'exynos-drm-next' of git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos into drm-next
This is a second pull-request which adds last part of
atomic modeset/pageflip support, render node support,
clean-up, and fix-up.
* 'exynos-drm-next' of git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos:
drm/exynos: fix build warning to exynos_drm_gem.c
drm/exynos: Properly report supported formats for each device
drm/exynos: add render node support
drm/exynos: implement atomic_{begin/flush} of DECON
drm/exynos: remove legacy ->suspend()/resume()
drm/exynos: Enable atomic modesetting feature
drm/exynos: remove wait queue for pending page flip
drm/exynos: wait all planes updates to finish
drm/exynos: add atomic asynchronous commit
drm/exynos: fimd: only finish update if START == START_S
drm/exynos: add macro to get the address of START_S reg
drm/exynos: check for pending fb before finish update
drm/exynos: fimd: move window protect code to prepare/cleanup_plane
drm/exynos: add prepare and cleanup phases for planes
drm/exynos: fimd: unify call to exynos_drm_crtc_finish_pageflip()
drm/exynos: don't track enabled state at exynos_crtc
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