Ville Syrjälä [Wed, 6 Aug 2014 11:49:46 +0000 (14:49 +0300)]
drm: Don't clear vblank timestamps when vblank interrupt is disabled
Clearing the timestamps causes us to send zeroed timestamps to userspace
if they get sent out in response to the drm_vblank_off(). It's better
to send the very latest timestamp and count instead.
Testcase: igt/kms_flip/modeset-vs-vblank-race Reviewed-by: Matt Roper <matthew.d.roper@intel.com> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Ville Syrjälä [Wed, 6 Aug 2014 11:49:45 +0000 (14:49 +0300)]
drm/i915: Warn if drm_vblank_get() still works after drm_vblank_off()
v2: Drop the drm_vblank_off() (Daniel)
Use drm_crtc_vblank_{get,put}()
Reviewed-by: Matt Roper <matthew.d.roper@intel.com> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Ville Syrjälä [Wed, 6 Aug 2014 11:49:44 +0000 (14:49 +0300)]
drm: Always reject drm_vblank_get() after drm_vblank_off()
Make sure drm_vblank_get() never succeeds when called between
drm_vblank_off() and drm_vblank_on(). Borrow a trick from the
old drm_vblank_{pre,post}_modeset() functions and just bump
the refcount in drm_vblank_off() and drop it in drm_vblank_on().
When drm_vblank_get() encounters a >0 refcount and the vblank
interrupt is already disabled it will simply return -EINVAL.
Hopefully the use of inmodeset won't conflict badly with
drm_vblank_{pre,post}_modeset().
For i915 there's a window between drm_vblank_off() and marking the
crtc as inactive where the current code still allows drm_vblank_get().
v2: Describe what drm_vblank_get() does to explain how
a simple refcount bump manages to fix things (Daniel)
Reviewed-by: Matt Roper <matthew.d.roper@intel.com> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Dave Airlie [Wed, 6 Aug 2014 07:24:25 +0000 (17:24 +1000)]
drm: move drm_stub.c to drm_drv.c
Everyone agrees we should do this,
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Acked-by: Alex Deucher <alexander.deucher@amd.com> Acked-by: David Herrmann <dh.herrmann@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
Dave Airlie [Wed, 6 Aug 2014 07:21:13 +0000 (17:21 +1000)]
Merge branch 'drm-next' of git://people.freedesktop.org/~dvdhrm/linux into drm-next
bunch of cleanups
* 'drm-next' of git://people.freedesktop.org/~dvdhrm/linux:
drm: mark drm_context support as legacy
drm: make sysfs device always available for minors
drm: make minor->index available early
drm: merge drm_drv.c into drm_ioctl.c
drm: move module initialization to drm_stub.c
drm: don't de-authenticate clients on master-close
drm: drop redundant drm_file->is_master
drm: extract legacy ctxbitmap flushing
Dave Airlie [Tue, 5 Aug 2014 22:18:21 +0000 (08:18 +1000)]
Merge branch 'drm-next-3.17' of git://people.freedesktop.org/~agd5f/linux into drm-next
- Additional Hawaii fixes
- Support for using the display scaler on non-fixed mode displays
- Support for new firmware format that makes it easier to update
- Enable dpm by default on additional asics
- GPUVM improvements
- Support for uncached and write combined gtt buffers
- Allow allocation of BOs larger than visible vram
- Various other small fixes and improvements
* 'drm-next-3.17' of git://people.freedesktop.org/~agd5f/linux: (57 commits)
drm/radeon: Prevent hdmi deep color if max_tmds_clock is undefined.
drm/radeon: Use pflip irqs for pageflip completion if possible. (v2)
drm/radeon: tweak ACCEL_WORKING2 query for the new firmware for hawaii
drm/radeon: use packet3 for nop on hawaii with new firmware
drm/radeon: tweak ACCEL_WORKING2 query for hawaii
drm/radeon: use packet2 for nop on hawaii with old firmware
drm/radeon: update IB size estimation for VM
drm/radeon: split PT setup in more functions
drm/radeon: add VM GART copy optimization to NI as well
drm/radeon: take a BO reference on VM cleanup
drm/radeon: add radeon_bo_ref function
drm/radeon: remove taking mclk_lock from radeon_bo_unref
drm/radeon: adjust default radeon_vm_block_size v2
drm/radeon: try to enable VM flushing once more
drm/radeon: use an intervall tree to manage the VMA v2
drm/radeon: remove radeon_bo_clear_va
drm/radeon: invalidate moved BOs in the VM (v2)
drm/radeon: re-enable dpm by default on BTC
drm/radeon: re-enable dpm by default on cayman
drm/radeon: Only flush HDP cache from idle ioctl if BO is in VRAM
...
David Herrmann [Thu, 24 Jul 2014 10:10:04 +0000 (12:10 +0200)]
drm: mark drm_context support as legacy
This renames all drm-context helpers to drm_legacy_*() and moves the
internal definitions into the new drm_legacy.h header. This header is
local to DRM-core and drivers shouldn't access it.
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: David Herrmann <dh.herrmann@gmail.com>
David Herrmann [Wed, 23 Jul 2014 09:38:38 +0000 (11:38 +0200)]
drm: make sysfs device always available for minors
For each minor we allocate a sysfs device as minor->kdev. Currently, this
is allocated and registered in drm_minor_register(). This makes it
impossible to add sysfs-attributes to the device before it is registered.
Therefore, they are not added atomically, nor can we move device_add()
*after* ->load() is called.
This patch makes minor->kdev available early, but only adds the device
during minor-registration. Note that the registration is still called
before ->load() as debugfs needs to be split, too. This will be fixed in
follow-ups.
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: David Herrmann <dh.herrmann@gmail.com>
David Herrmann [Wed, 23 Jul 2014 08:34:52 +0000 (10:34 +0200)]
drm: make minor->index available early
Instead of allocating the minor-index during registration, we now do this
during allocation. This way, debug-messages between minor-allocation and
minor-registration will now use the correct minor instead of 0. Same is
done for unregistration vs. free, so debug-messages between
device-shutdown and device-destruction show proper indices.
Even though minor-indices are allocated early, we don't enable minor
lookup early. Instead, we keep the entry set to NULL and replace it during
registration / unregistration. This way, the index is allocated but lookup
only works if registered.
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: David Herrmann <dh.herrmann@gmail.com>
David Herrmann [Wed, 23 Jul 2014 12:14:53 +0000 (14:14 +0200)]
drm: merge drm_drv.c into drm_ioctl.c
All that is left in drm_drv.c is ioctl management. Merge it into
drm_ioctl.c so we have all ioctl management in one file (and the name is
much more fitting).
Maybe we should now rename drm_stub.c to drm_drv.c again?
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: David Herrmann <dh.herrmann@gmail.com>
David Herrmann [Wed, 23 Jul 2014 10:29:56 +0000 (12:29 +0200)]
drm: move module initialization to drm_stub.c
Most of the new DRM management functions are nowadays in drm_stub.c. By
moving the core module initialization to drm_stub.c we can make several
global variables static and keep the stub-open helper local.
The core files now look like this:
drm_stub.c: Core management
drm_drv.c: Ioctl dispatcher
drm_ioctl.c: Actual ioctl backends
drm_fops.c: Char-dev file-operations
A follow-up patch will move what is left from drm_drv.c into drm_ioctl.c.
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: David Herrmann <dh.herrmann@gmail.com>
David Herrmann [Tue, 22 Jul 2014 15:12:26 +0000 (17:12 +0200)]
drm: don't de-authenticate clients on master-close
If an active DRM-Master closes its device, we deauthenticate all clients
on that master. However, if an inactive DRM-Master closes its device, we
do nothing. This is quite inconsistent and breaks several scenarios:
1) If this was used as security mechanism, it fails horribly if a master
closes a device while VT switched away. Furthermore, none of the few
drivers using ->master_*() callbacks seems to require it, anyway.
2) If you spawn weston (or any other non-UMS compositor) in background
while another compositor is active, both will get assigned to the
same "drm_master" object. If the foreground compositor now exits, all
clients of both the foreground AND background compositor will be
de-authenticated leading to unexpected behavior.
Stop this non-sense and keep clients authenticated. We don't do this when
dropping DRM-Master (i.e., switching VTs) so don't do it on active-close
either!
Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: David Herrmann <dh.herrmann@gmail.com>
David Herrmann [Tue, 22 Jul 2014 16:46:09 +0000 (18:46 +0200)]
drm: drop redundant drm_file->is_master
The drm_file->is_master field is redundant as it's equivalent to:
drm_file->master && drm_file->master == drm_file->minor->master
1) "=>"
Whenever we set drm_file->is_master, we also set:
drm_file->minor->master = drm_file->master;
Whenever we clear drm_file->is_master, we also call:
drm_master_put(&drm_file->minor->master);
which implicitly clears it to NULL.
2) "<="
minor->master cannot be set if it is non-NULL. Therefore, it stays as
is unless a file drops it.
If minor->master is NULL, it is only set by places that also adjust
drm_file->is_master.
Therefore, we can safely drop is_master and replace it by an inline helper
that matches:
drm_file->master && drm_file->master == drm_file->minor->master
Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: David Herrmann <dh.herrmann@gmail.com>
David Herrmann [Wed, 23 Jul 2014 07:01:12 +0000 (09:01 +0200)]
drm: extract legacy ctxbitmap flushing
The ctxbitmap code is only used by legacy drivers so lets try to keep it
as separated as possible. Furthermore, the locking is non-obvious and
kinda weird with ctxlist_mutex *and* struct_mutex. Keeping all ctxbitmap
access in one file is much easier to review and makes drm_release() more
readable.
Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: David Herrmann <dh.herrmann@gmail.com>
Mario Kleiner [Tue, 29 Jul 2014 04:21:44 +0000 (06:21 +0200)]
drm/radeon: Use pflip irqs for pageflip completion if possible. (v2)
Skip the "manual" pageflip completion checks via polling and
guessing in the vblank handler radeon_crtc_handle_vblank() on
asics which are known to reliably support hw pageflip completion
irqs. Those pflip irqs are a more reliable and race-free method
of handling pageflip completion detection, whereas the "classic"
polling method has some small races in combination with dpm on,
and with the reworked pageflip implementation since Linux 3.16.
On old asics without pflip irqs, the classic method is used.
On asics with known good pflip irqs, only pflip irqs are used
by default, but a new module parameter "use_pflipirqs" allows to
override this in case we encounter asics in the wild with
unreliable or faulty pflip irqs. A module parameter of 0 allows
to use the classic method only in such a case. A parameter of 1
allows to use both classic method and pflip irqs as additional
band-aid to avoid some small races which could happen with the
classic method alone. The setting 1 gives Linux 3.16 behaviour.
Hw pflip irqs are available since R600.
Tested on DCE-4, AMD Cedar - FirePro 2270.
v2: agd5f: only enable pflip interrupts on DCE4+ as they are not
reliable on older asics.
Signed-off-by: Mario Kleiner <mario.kleiner.de@gmail.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Alex Deucher [Fri, 1 Aug 2014 18:05:30 +0000 (20:05 +0200)]
drm/radeon: tweak ACCEL_WORKING2 query for hawaii
Return 2 so we can be sure the kernel has the necessary
changes for acceleration to work.
Note: This patch depends on these two commits:
- drm/radeon: fix cut and paste issue for hawaii.
- drm/radeon: use packet2 for nop on hawaii with old firmware
Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Andreas Boll <andreas.boll.dev@gmail.com> Cc: stable@vger.kernel.org
Alex Deucher [Fri, 1 Aug 2014 18:05:29 +0000 (20:05 +0200)]
drm/radeon: use packet2 for nop on hawaii with old firmware
Older firmware didn't support the new nop packet.
v2 (Andreas Boll):
- Drop usage of packet3 for new firmware
Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Reviewed-by: Christian König <christian.koenig@amd.com> (v1) Signed-off-by: Andreas Boll <andreas.boll.dev@gmail.com> Cc: stable@vger.kernel.org
Christian König [Fri, 18 Jul 2014 07:24:56 +0000 (09:24 +0200)]
drm/radeon: try to enable VM flushing once more
Let's try to fix bugs related to this instead of just disabling it.
Signed-off-by: Christian König <christian.koenig@amd.com> Tested-by: Michel Dänzer <michel.daenzer@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Alex Deucher [Wed, 30 Jul 2014 15:49:56 +0000 (11:49 -0400)]
drm/radeon: use an intervall tree to manage the VMA v2
Scales much better than scanning the address range linearly.
v2: store pfn instead of address
Signed-off-by: Christian König <christian.koenig@amd.com> Tested-by: Michel Dänzer <michel.daenzer@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Christian König [Fri, 18 Jul 2014 07:24:54 +0000 (09:24 +0200)]
drm/radeon: remove radeon_bo_clear_va
Won't work anyway, instead WARN_ON if the VA list isn't
empty when we free the BO.
Signed-off-by: Christian König <christian.koenig@amd.com> Tested-by: Michel Dänzer <michel.daenzer@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Christian König [Fri, 18 Jul 2014 07:24:53 +0000 (09:24 +0200)]
drm/radeon: invalidate moved BOs in the VM (v2)
Don't wait for the BO to be used again, just
update the PT on the next VM use.
v2: remove stray semicolon.
Signed-off-by: Christian König <christian.koenig@amd.com> Tested-by: Michel Dänzer <michel.daenzer@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Michel Dänzer [Fri, 1 Aug 2014 08:22:09 +0000 (17:22 +0900)]
drm/radeon: Only flush HDP cache from idle ioctl if BO is in VRAM
The HDP cache only applies to CPU access to VRAM.
Signed-off-by: Michel Dänzer <michel.daenzer@amd.com> Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Michel Dänzer [Thu, 31 Jul 2014 09:43:49 +0000 (18:43 +0900)]
drm/radeon: Always flush the HDP cache before submitting a CS to the GPU
This ensures the GPU sees all previous CPU writes to VRAM, which makes it
safe:
* For userspace to stream data from CPU to GPU via VRAM instead of GTT
* For IBs to be stored in VRAM instead of GTT
* For ring buffers to be stored in VRAM instead of GTT, if the HPD flush
is performed via MMIO
Signed-off-by: Michel Dänzer <michel.daenzer@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Alex Deucher [Wed, 30 Jul 2014 21:57:28 +0000 (17:57 -0400)]
drm/radeon: fix reversed logic in evergreen_mc_resume
Need to unblank the display when resuming the MC. No
functional change as this code path is not currently
hit. We always disable the displays entirely rather
than just blanking them.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Michel Dänzer [Tue, 29 Jul 2014 09:47:22 +0000 (18:47 +0900)]
drm/radeon/cik: Read back SDMA WPTR register after writing it
For symmetry with other *_set_wptr hooks.
Signed-off-by: Michel Dänzer <michel.daenzer@amd.com> Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Michel Dänzer [Tue, 29 Jul 2014 09:47:21 +0000 (18:47 +0900)]
drm/radeon: Use write-combined CPU mappings of IBs on >= CIK
Signed-off-by: Michel Dänzer <michel.daenzer@amd.com> Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Michel Dänzer [Tue, 29 Jul 2014 09:47:20 +0000 (18:47 +0900)]
drm/radeon: Use write-combined CPU mappings of ring buffers with PCIe
PCI GART doesn't support unsnooped access. AGP GART already uses
write-combined CPU mappings.
Signed-off-by: Michel Dänzer <michel.daenzer@amd.com> Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Alex Deucher [Fri, 18 Jul 2014 15:54:20 +0000 (11:54 -0400)]
drm/radeon: add a PX quirk list
Some PX laptops seems to have problems turning the dGPU on/off.
Add a quirk list to disable runpm by default on those systems.
Also convert the current PX d3 delay handling to a quirk.
v2: use new gart_pin_size to accurately track available gtt.
v3: fix comment
v4: clarify comment
Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Reviewed-by: Christian König <christian.koenig@amd.com> Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Alex Deucher [Thu, 17 Jul 2014 16:20:32 +0000 (12:20 -0400)]
drm/radeon: use vram/gart pinned size in radeon_do_test_moves
Gives more accurate count and prevents failures when we can't
allocate memory for the tests.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Reviewed-by: Christian König <christian.koenig@amd.com> Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Alex Deucher [Thu, 17 Jul 2014 16:16:20 +0000 (12:16 -0400)]
drm/radeon: use vram/gart pinned size in radeon_gem_info_ioctl
Gives a more accurate limit than the previous code.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Reviewed-by: Christian König <christian.koenig@amd.com> Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Alex Deucher [Thu, 17 Jul 2014 16:09:25 +0000 (12:09 -0400)]
drm/radeon: track pinned memory (v2)
So we know how large an allocation we can allow.
v2: incorporate Michel's comments
Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Reviewed-by: Christian König <christian.koenig@amd.com> Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Michel Dänzer [Thu, 17 Jul 2014 10:01:08 +0000 (19:01 +0900)]
drm/radeon: Allow write-combined CPU mappings of BOs in GTT (v2)
v2: fix rebase onto drm-fixes
Signed-off-by: Michel Dänzer <michel.daenzer@amd.com> Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Michel Dänzer [Thu, 17 Jul 2014 10:01:07 +0000 (19:01 +0900)]
drm/radeon: Pass GART page flags to radeon_gart_set_page() explicitly
Signed-off-by: Michel Dänzer <michel.daenzer@amd.com> Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Michel Dänzer [Wed, 9 Jul 2014 18:15:42 +0000 (20:15 +0200)]
drm/radeon: Remove radeon_gart_restore()
Doesn't seem necessary, the GART table memory should be persistent.
Signed-off-by: Michel Dänzer <michel.daenzer@amd.com> Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Michel Dänzer [Wed, 16 Jul 2014 09:40:32 +0000 (18:40 +0900)]
drm/radeon: Demote 'BO allocation size too large' message to debug only
These clutter up dmesg during piglit runs. Userspace generally deals
gracefully with this failure.
Signed-off-by: Michel Dänzer <michel.daenzer@amd.com> Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Alex Deucher [Tue, 15 Jul 2014 15:00:47 +0000 (11:00 -0400)]
drm/radeon: use a fetch function to get the edid
We keep a cached version of the edid in radeon_connector which
we use for determining connectedness and when to enable certain
features like hdmi audio, etc. When the user uses the firmware
interface to override the driver with some other edid the driver's
copy is never updated. The fetch function will check if there
is a user supplied edid and update the driver's copy if there
is.
Stefan Brüns [Sat, 12 Jul 2014 23:47:14 +0000 (01:47 +0200)]
drm/radeon: Use correct value for unknown audio/video latency
Valid values are 1 to 251 for 0 to 500 ms latency, 0 for unknown
and 255 for audio/video unsupported by sink, according to HDMI 1.3 spec.
Also matches Radeon HDA verb 0xf7b documentation.
Signed-off-by: Stefan Brüns <stefan.bruens@rwth-aachen.de> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Lauri Kasanen [Sun, 20 Apr 2014 17:29:33 +0000 (20:29 +0300)]
drm/radeon: Inline r100_mm_rreg, -wreg, v3
This was originally un-inlined by Andi Kleen in 2011 citing size concerns.
Indeed, a first attempt at inlining it grew radeon.ko by 7%.
However, 2% of cpu is spent in this function. Simply inlining it gave 1% more fps
in Urban Terror.
v2: We know the minimum MMIO size. Adding it to the if allows the compiler to
optimize the branch out, improving both performance and size.
The v2 patch decreases radeon.ko size by 2%. I didn't re-benchmark, but common sense
says perf is now more than 1% better.
v3: Also change _wreg, make the threshold a define.
Inlining _wreg increased the size a bit compared to v2, so now radeon.ko
is only 1% smaller.
Signed-off-by: Lauri Kasanen <cand@gmx.com> Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Alex Deucher [Wed, 9 Jul 2014 17:21:59 +0000 (13:21 -0400)]
drm/radeon: enable display scaling on all connectors (v2)
This enables the display scaler on all connectors for r5xx
and newer asics. Previously we only enabled the scaler for
fixed mode displays (eDP or LVDS) since they have to use the
scaler to support non-native modes. Most other displays
are multi-sync or have a built in scaler to support non-native
modes. The default scaling mode for non-fixed displays is
none which will use the scaler in the monitor. Note that
we do not populate any fake modes like we do for fixed
displays so it will only use the modes in the edid. For
other modes, you'll need to populate them manually.
Fix checkpatch warning:
WARNING: kfree(NULL) is safe this check is probably not required
Cc: Alex Deucher <alexander.deucher@amd.com> Cc: David Airlie <airlied@linux.ie> Cc: dri-devel@lists.freedesktop.org Signed-off-by: Fabian Frederick <fabf@skynet.be> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
I asked for a check to make sure that we never leak an fb from the
generic mode object lookup since those have completely different
lifetime rules. Rob added it, but outside of the idr mutex, which
means that our dereference of obj->type can already chase free'd
memory.
Somehow I didn't spot this, so fix this asap.
v2: Simplify the conditionals as suggested by Chris.
Cc: Rob Clark <robdclark@gmail.com> Cc: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Reviewed-by: Rob Clark <robdclark@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
Chris Wilson [Thu, 24 Jul 2014 13:23:10 +0000 (14:23 +0100)]
drm: Unlink dead file_priv from list of active files first
In order to prevent external observers walking the list of open DRM
files from seeing an invalid drm_file_private in the process of being
torndown, the first operation we need to take is to unlink the
drm_file_private from that list.
Tetsuo Handa [Sun, 3 Aug 2014 11:02:31 +0000 (20:02 +0900)]
drm/ttm: Pass GFP flags in order to avoid deadlock.
Commit 7dc19d5a "drivers: convert shrinkers to new count/scan API" added
deadlock warnings that ttm_page_pool_free() and ttm_dma_page_pool_free()
are currently doing GFP_KERNEL allocation.
But these functions did not get updated to receive gfp_t argument.
This patch explicitly passes sc->gfp_mask or GFP_KERNEL to these functions,
and removes the deadlock warning.
Tetsuo Handa [Sun, 3 Aug 2014 11:02:03 +0000 (20:02 +0900)]
drm/ttm: Fix possible stack overflow by recursive shrinker calls.
While ttm_dma_pool_shrink_scan() tries to take mutex before doing GFP_KERNEL
allocation, ttm_pool_shrink_scan() does not do it. This can result in stack
overflow if kmalloc() in ttm_page_pool_free() triggered recursion due to
memory pressure.
Tetsuo Handa [Sun, 3 Aug 2014 11:01:10 +0000 (20:01 +0900)]
drm/ttm: Use mutex_trylock() to avoid deadlock inside shrinker functions.
I can observe that RHEL7 environment stalls with 100% CPU usage when a
certain type of memory pressure is given. While the shrinker functions
are called by shrink_slab() before the OOM killer is triggered, the stall
lasts for many minutes.
One of reasons of this stall is that
ttm_dma_pool_shrink_count()/ttm_dma_pool_shrink_scan() are called and
are blocked at mutex_lock(&_manager->lock). GFP_KERNEL allocation with
_manager->lock held causes someone (including kswapd) to deadlock when
these functions are called due to memory pressure. This patch changes
"mutex_lock();" to "if (!mutex_trylock()) return ...;" in order to
avoid deadlock.
Tetsuo Handa [Sun, 3 Aug 2014 11:00:40 +0000 (20:00 +0900)]
drm/ttm: Choose a pool to shrink correctly in ttm_dma_pool_shrink_scan().
We can use "unsigned int" instead of "atomic_t" by updating start_pool
variable under _manager->lock. This patch will make it possible to avoid
skipping when choosing a pool to shrink in round-robin style, after next
patch changes mutex_lock(_manager->lock) to !mutex_trylock(_manager->lork).
Tetsuo Handa [Sun, 3 Aug 2014 10:59:35 +0000 (19:59 +0900)]
drm/ttm: Fix possible division by 0 in ttm_dma_pool_shrink_scan().
list_empty(&_manager->pools) being false before taking _manager->lock
does not guarantee that _manager->npools != 0 after taking _manager->lock
because _manager->npools is updated under _manager->lock.
Dave Airlie [Mon, 4 Aug 2014 23:28:37 +0000 (09:28 +1000)]
Merge branch 'drm_kms_for_next-v8' of git://git.linaro.org/people/benjamin.gaignard/kernel into drm-next
This series of patches add the support of DRM/KMS drivers for STMicroelectronics
chipsets stih416 and stih407.
Hardware is split in two main blocks: Compositor and TVout. Each of them
includes specific hardware IPs and the display timing are controlled by a specific
Video Timing Generator hardware IP (VTG).
Compositor is made of the follow hardware IPs:
- GDP (Generic Display Pipeline) which is an entry point for graphic (RGB)
buffers
- VDP (Video Diplay Pipeline) which is an entry point for video (YUV) buffers
- HQVDP (High Quality Video Display Processor) that supports scaling,
deinterlacing and some miscellaneous image quality improvements.
It fetches the Video decoded buffers from memory, processes them and pushes
them to the Compositor through a HW dedicated bus.
- Mixer is responsible of mixing all the entries depending of their
respective z-order and layout
TVout is divided in 3 parts:
- HDMI to generate HDMI signals, depending of chipset version HDMI phy can
change.
- HDA to generate signals for HD analog TV
- VIP to control/switch data path coming from Compositor
On stih416 compositor and Tvout are on different dies so a Video Trafic Advance
inter-die Communication mechanism (VTAC) is needed.
Dave Airlie [Mon, 4 Aug 2014 23:26:09 +0000 (09:26 +1000)]
Merge branch 'tda998x-devel' of git://ftp.arm.linux.org.uk/~rmk/linux-cubox into drm-next
This builds upon the previous set of fixes which were pulled on 6th July.
Included in this set are:
- an update from Jean-Francois to add the missing reg documentation entry
to the device tree documentation.
- conversion of the tda998x driver to the component helpers.
* 'tda998x-devel' of git://ftp.arm.linux.org.uk/~rmk/linux-cubox:
drm/i2c: tda998x: add component support
drm/i2c: tda998x: allow re-use of tda998x support code
drm/i2c: tda998x: fix lack of required reg in DT documentation
Dave Airlie [Mon, 4 Aug 2014 23:22:27 +0000 (09:22 +1000)]
Merge branch 'msm-next' of git://people.freedesktop.org/~robclark/linux into drm-next
This time around we have a mix of new hw enablement (mdp5 v1.3 /
apq8084), plus devicetree and various upstream changes (mostly
adapting to CCF vs downstream clk driver differences) for mdp4 /
apq8064. With these drm/msm patches plus a few other small patchsets
(from linaro qcom integration branch.. mostly stuff queued up for
3.17) we have the inforce ifc6410 board working, with gpu. Much nicer
to work with than ancient vendor android branch :-)
* 'msm-next' of git://people.freedesktop.org/~robclark/linux:
drm/msm/hdmi: fix HDMI_MUX_EN gpio request typo
drm/msm/hdmi: enable lpm-mux if it is present
drm/msm/mdp5: add support for MDP5 v1.3
drm/msm: fix potential deadlock in gpu init
drm/msm: use upstream iommu
drm/msm: no mmu is only error if not using vram carveout
drm/msm: fix BUG_ON() in error cleanup path
drm/msm/mdp4: add mdp axi clk
drm/msm: hdmi phy 8960 phy pll
drm/msm: update generated headers
drm/msm: DT support for 8960/8064 (v3)
drm/msm: Implement msm drm fb_mmap callback function
drm/msm: activate iommu support
drm/msm: fix double struct_mutex acquire
MDP5 has several functional blocks (ie: VIG/RGB pipes, LMs, ...).
From one revision to another, these blocks' base addresses might
change due to the number of instances present in the MDP5 hw.
A way of dealing with these offset changes is to introduce
dynamic offsets 'per block'.
This change adds support for the new revision of MDP5: v1.3.
The idea is to define one hw config per MDP version and select
either one of them at runtime, after reading the MDP5 version.
Once the MDP version is known, 'per block' dynamic offsets
are initialized through a global pointer, which is then used for
read/write register access.
Signed-off-by: Stephane Viau <sviau@codeaurora.org> Signed-off-by: Rob Clark <robdclark@gmail.com>
Rob Clark [Thu, 10 Jul 2014 02:08:15 +0000 (22:08 -0400)]
drm/msm: use upstream iommu
Downstream kernel IOMMU had a non-standard way of dealing with multiple
devices and multiple ports/contexts. We don't need that on upstream
kernel, so rip out the crazy.
Note that we have to move the pinning of the ringbuffer to after the
IOMMU is attached. No idea how that managed to work properly on the
downstream kernel.
For now, I am leaving the IOMMU port name stuff in place, to simplify
things for folks trying to backport latest drm/msm to device kernels.
Once we no longer have to care about pre-DT kernels, we can drop this
and instead backport upstream IOMMU driver.
Rob Clark [Wed, 25 Jun 2014 13:54:36 +0000 (09:54 -0400)]
drm/msm: hdmi phy 8960 phy pll
On downstream kernel the clk driver directly bangs hdmi phy registers.
For upstream kernel, we need to model this as a clock and register with
the clock framework.
Hai Li [Wed, 18 Jun 2014 20:55:27 +0000 (16:55 -0400)]
drm/msm: Implement msm drm fb_mmap callback function
This change implements msm drm specific fb_mmap function for fb device
to properly map the fb address to userspace.
Signed-off-by: Hai Li <hali@codeaurora.org> Signed-off-by: Stephane Viau <sviau@codeaurora.org> Signed-off-by: Rob Clark <robdclark@gmail.com> (+ minor comment tweak)
Dave Airlie [Mon, 4 Aug 2014 07:57:34 +0000 (17:57 +1000)]
Merge tag 'drm-intel-next-2014-07-25-merged' of git://anongit.freedesktop.org/drm-intel into drm-next
Final feature pull for 3.17.
drm-intel-next-2014-07-25:
- Ditch UMS support (well just the config option for now)
- Prep work for future platforms (Sonika Jindal, Damien)
- runtime pm/soix fixes (Paulo, Jesse)
- psr tracking improvements, locking fixes, now enabled by default!
- rps fixes for chv (Deepak, Ville)
- drm core patches for rotation support (Ville, Sagar Kamble) - the i915 parts
unfortunately didn't make it yet
- userptr fixes (Chris)
- minimum backlight brightness (Jani), acked long ago by Matthew Garret on irc -
I've forgotten about this patch :(
QA is a bit unhappy about the DP MST stuff since it broke hpd testing a
bit, but otherwise looks sane. I've backmerged drm-next to resolve
conflicts with the mst stuff, which means the new tag itself doesn't
contain the overview as usual.
* tag 'drm-intel-next-2014-07-25-merged' of git://anongit.freedesktop.org/drm-intel: (75 commits)
drm/i915/userptr: Keep spin_lock/unlock in the same block
drm/i915: Allow overlapping userptr objects
drm/i915: Ditch UMS config option
drm/i915: respect the VBT minimum backlight brightness
drm/i915: extract backlight minimum brightness from VBT
drm/i915: Replace HAS_PCH_SPLIT which incorrectly lets some platforms in
drm/i915: Returning from increase/decrease of pllclock when invalid
drm/i915: Setting legacy palette correctly for different platforms
drm/i915: Avoid incorrect returning for some platforms
drm/i915: Writing proper check for reading of pipe status reg
drm/i915: Returning the right VGA control reg for platforms
drm/i915: Allowing changing of wm latencies for valid platforms
drm/i915: Adding HAS_GMCH_DISPLAY macro
drm/i915: Fix possible overflow when recording semaphore states.
drm/i915: Do not unmap object unless no other VMAs reference it
drm/i915: remove plane/cursor/pipe assertions from intel_crtc_disable
drm/i915: Reorder ctx unref on ppgtt cleanup
drm/i915/error: Check the potential ctx obj's vm
drm/i915: Fix printing proper min/min/rpe values in debugfs
drm/i915: BDW can also detect unclaimed registers
...
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