Commit Graph

400543 Commits

Author SHA1 Message Date
Alex Deucher
033a37df15 drm/radeon/dpm: only print dpm debugging messages when radeon_dpm=1
Avoids spamming the system log for chips where dpm is enabled by
default, but prints then messages when users force it on for other
asics.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2013-11-01 12:43:21 -04:00
Markus Trippelsdorf
846ae41ae9 drm/radeon: Implement radeon_pci_shutdown
Currently radeon devices are not properly shutdown during kexec. This
causes a varity of issues, e.g. dpm initialization failures.
Fix this by implementing a radeon_pci_shutdown function, that unloads
the driver cleanly.

Signed-off-by: Markus Trippelsdorf <markus@trippelsdorf.de>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2013-11-01 12:43:20 -04:00
Alex Deucher
b188025888 drm/radeon/audio: write audio/video latency info for DCE6/8
Needed by the hda driver to properly set up synchronization
on the audio side.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
2013-11-01 12:43:20 -04:00
Alex Deucher
712fd8a2cd drm/radeon/audio: write audio/video latency info for DCE4/5
Needed by the hda driver to properly set up synchronization
on the audio side.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
2013-11-01 12:43:19 -04:00
Alex Deucher
8a992ee145 drm/radeon/audio: break out of loops once we match connector
No need to continue with the loops once we've matched
the appropriate connector.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2013-11-01 12:43:19 -04:00
Alex Deucher
4039096199 drm/radeon/atom: don't call [EN|DIS]ABLE_OUTPUT on DCE4.x
The plain [EN|DIS]ABLE functions do the same thing and more
and aren't broken on some systems like [EN|DIS]ABLE_OUTPUT.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2013-11-01 12:43:18 -04:00
Alex Deucher
43a340262a drm/radeon/atom: don't call [EN|DIS]ABLE_OUTPUT on DCE3.x
The plain [EN|DIS]ABLE functions do the same thing and more
and aren't broken on some systems like [EN|DIS]ABLE_OUTPUT.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2013-11-01 12:43:18 -04:00
Alex Deucher
4573388c92 drm/radeon/si: tell dpm there is a display connected
On SI asics, the SMC will automatically force the performance
level to the lowest level if there are no displays active.  This
prevents automatic performance scaling on PowerXpress systems or
for offscreen rendering or compute when displays are disabled.

Going forward, it would be best to dynamically change this, but
for now leave scaling enabled.

Fixes:
https://bugs.freedesktop.org/show_bug.cgi?id=69395

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2013-11-01 12:43:17 -04:00
Alex Deucher
c9dbd70552 drm/radeon: implement blit copy callback for CIK
Uses the CP ring rather than the DMA ring.  Useful
for debugging and benchmarking.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2013-11-01 12:43:16 -04:00
Dan Carpenter
43e917251a drm/radeon/dpm: cleanup a type issue with rv6xx_clocks_per_unit()
The rv6xx_clocks_per_unit() function pretends it can set flags in a u64
bitfield but really because "1" is an int it doesn't work for more than
32 bits.  The only caller truncates the high bits away anyway.  I've
just changed it to be a u32.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2013-11-01 12:43:16 -04:00
Alex Deucher
5c72273913 drm/radeon: plug in blit copy routine for SI
Uses CP DMA packet just like previous asics.
Useful for debugging and benchmarking.  Uses
same packet format as prior asics.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2013-11-01 12:43:15 -04:00
Alex Deucher
ad41550666 drm/radeon: enable hdmi audio by default
Seems to be stable enough for the majority of users.
It can be disabled on the fly via connector attributes.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2013-11-01 12:43:15 -04:00
Dave Airlie
10ebc0bc09 drm/radeon: add runtime PM support (v2)
This hooks radeon up to the runtime PM system to enable
dynamic power management for secondary GPUs in switchable
and powerxpress laptops.

v2: agd5f: clean up, add module parameter

Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2013-11-01 12:43:14 -04:00
Dave Airlie
7473e830c4 drm/radeon: convert to pmops
This is a pre-requisite for runtime pm on powerxpress systems.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2013-11-01 12:43:14 -04:00
Alex Deucher
6214bb7487 drm/radeon: add a connector property for dither
Allows you to enable dither in the display hardware
when the monitor supports lower a lower bpc than the
current framebuffer format.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2013-11-01 12:43:13 -04:00
Alex Deucher
134b480f4b drm/radeon: Add support for programming the FMT blocks
The FMT blocks control how data is sent from the backend
of the display pipe to to monitor.  Proper set up of the
FMT blocks are required for 30bpp formats.  Additionally,
dithering can be enabled on for better display with 18 and
24bpp displays.  The exception is LVDS/eDP which atom
takes care of in the SelectCRTC_Source table.  For now
just enable truncation until we test dithering more.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2013-11-01 12:43:12 -04:00
Thierry Reding
9d6104e017 drm/sysfs: Do not drop device reference twice
device_unregister() already drops its reference to the struct device, so
explicitly calling put_device() before device_unregister() can cause the
device to have been freed before it can be unregistered.

Signed-off-by: Thierry Reding <treding@nvidia.com>
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Tested-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Tested-by: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2013-10-31 06:33:49 +10:00
Dave Airlie
be51e4a781 Merge tag 'drm-intel-next-2013-10-18' of git://people.freedesktop.org/~danvet/drm-intel into drm-next
- CRC support from Damien and He Shuang. Long term this should allow us to
  test an awful lot modesetting corner cases automatically. So for me as
  the maintainer this is really big.
- HDMI audio fix from Jani.
- VLV dpll computation code refactoring from Ville.
- Fixups for the gpu booster from last time around (Chris).
- Some cleanups in the context code from Ben.
- More watermark work from Ville (we'll be getting there ...).
- vblank timestamp improvements from Ville.
- CONFIG_FB=n support, including drm core changes to make the fbdev
  helpers optional.
- DP link training improvements (Jani).
- mmio vtable from Ben, prep work for future hw.

* tag 'drm-intel-next-2013-10-18' of git://people.freedesktop.org/~danvet/drm-intel: (132 commits)
  drm/i915/dp: don't mention eDP bpp clamping if it doesn't affect bpp
  drm/i915: remove dead code in ironlake_crtc_mode_set
  drm/i915: crc support for hsw
  drm/i915: fix CRC debugfs setup
  drm/i915: wait one vblank when disabling CRCs
  drm/i915: use ->get_vblank_counter for the crc frame counter
  drm/i915: wire up CRC interrupt for ilk/snb
  drm/i915: add CRC #defines for ilk/snb
  drm/i915: extract display_pipe_crc_update
  drm/i915: don't Oops in debugfs for I915_FBDEV=n
  drm/i915: set HDMI pixel clock in audio configuration
  drm/i915: pass mode to ELD write vfuncs
  cpufreq: Add dummy cpufreq_cpu_get/put for CONFIG_CPU_FREQ=n
  drm/i915: check gem bo size when creating framebuffers
  drm/i915: Use unsigned long for obj->user_pin_count
  drm/i915: prevent tiling changes on framebuffer backing storage
  drm/i915: grab dev->struct_mutex around framebuffer_init
  drm/i915: vlv: fix VGA hotplug after modeset
  drm: add support for additional stereo 3D modes
  drm/i915: preserve dispaly init order on ByT
  ...
2013-10-25 09:35:04 +01:00
Marc-André Lureau
5cab51cb33 drm/qxl: fix disabling extra monitors from client
To disable a monitor, a Spice client sends a monitor config with the
monitor resolution to 0x0.

However, before qxl_crtc_disable() is reached after the hotplug event,
it can happen that another monitor is reconfigured, and
qxl_send_monitors_config() is called with the old config, which will
re-enable the monitor on the client.

Reset config if monitor is found disconnected, during
drm_helper_hpd_irq_event().

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2013-10-23 14:21:48 +01:00
Marc-André Lureau
a40a60d912 drm/qxl: remove unnecessary check
All hard-coded resolutions are passing this check.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2013-10-23 14:21:24 +01:00
Marc-André Lureau
b080742393 drm/qxl: prefer the monitor config resolution
By default, 1024x768 is the preferred resolution. However, when a
monitor config is given, it should be the only preferred resolution.

Note that the monitor config resolution is passed to
qxl_add_common_modes() to avoid adding a duplicate mode without the
preferred resolution. That would discard the previous monitor config
preferred bit.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2013-10-23 14:21:22 +01:00
Marc-André Lureau
3fbd6439e4 drm: copy mode type in drm_mode_connector_list_update()
In commit 38d5487db7, Keith explained:
    This patch simply merges the two mode type bits together; that seems
    reasonable to me, but perhaps only a subset of the bits should be
    used? None of these can be user defined as they all come from
    looking at just the hardware.

However, merging the bits means that a flag becomes sticky. It is not
possible, for example to update the mode type to remove the
DRM_MODE_TYPE_PREFERRED bit.

After a brief discussion with Dave Airlie on irc, it was agreed to
propose that change, instead of introducing another function to remove a
bit from exisiting modes type.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2013-10-23 14:21:12 +01:00
Marc-André Lureau
4fdb086924 drm/qxl: notify that the monitor config changed
drm_helper_hpd_irq_event() only notifies when the connector status
changed. However, Spice monitor config can change while the connector is
connected, to support arbitrary resolution. Do an hotplug event if it
wasn't done by drm_helper_hpd_irq_event().

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2013-10-23 14:21:09 +01:00
Marc-André Lureau
b8206d3916 drm: return if changed in drm_helper_hpd_irq_event()
The caller may want to know whether the configuration was changed, and
if an hotplug event was sent.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2013-10-23 14:21:07 +01:00
Marc-André Lureau
74afee7dd9 drm: fix a small spelling
Fix a little spelling of drm_crtc_convert_umode() comment.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2013-10-23 14:21:06 +01:00
Dave Airlie
9e3396ae42 Merge branch 'drm-tda998x-3.12-fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-cubox into drm-next
Fix build on non-ARM
* 'drm-tda998x-3.12-fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-cubox:
  DRM: Armada: depend on ARM
2013-10-23 10:09:56 +01:00
Russell King
796c8e1c34 DRM: Armada: depend on ARM
Armada DRM uses relaxed accessors which are not available on other
platforms.  Limit it to just ARM.

Acked-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2013-10-22 14:34:00 +01:00
Dave Airlie
5e4e3ba997 Merge branch 'drm-tda998x-3.12' of git://ftp.arm.linux.org.uk/~rmk/linux-cubox into drm-next
This adds support for the Armada 510 display subsystem found on the
Marvell Dove devices.  This IP is re-used across several different Marvell
SoCs with various tweaks, and this driver has been structured to allow
the other IPs to re-use the bulk of this code; further work in this area
is expected from interested parties.

This has been extensively tested on the SolidRun Cubox platform and
appears to work well there.

[airlied: update for api changes merged previous to this]
2013-10-22 09:50:08 +01:00
Dave Airlie
5bdebb183c drm/sysfs: sort out minor and connector device object lifetimes.
So drm was abusing device lifetimes, by having embedded device structures
in the minor and connector it meant that the lifetime of the internal drm
objects (drm_minor and drm_connector) were tied to the lifetime of the device
files in sysfs, so if something kept those files opened the current code
would kfree the objects and things would go downhill from there.

Now in reality there is no need for these lifetimes to be so intertwined,
especailly with hotplugging of devices where we wish to remove the sysfs
and userspace facing pieces before we can unwind the internal objects due
to open userspace files or mmaps, so split the objects out so the struct
device is no longer embedded and do what fbdev does and just allocate
and remove the sysfs inodes separately.

Signed-off-by: Dave Airlie <airlied@redhat.com>
2013-10-22 09:37:40 +01:00
Russell King
585b691e21 DRM: Armada: add support for drm tda19988 driver
Add support for TDA998x output via the slave driver in the kernel.

Reviewed-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2013-10-18 16:00:33 +01:00
Russell King
dfdba7fd60 Merge branches 'drm-3.12' and 'tda998x-3.12' into drm-tda998x-3.12 2013-10-18 16:00:02 +01:00
Russell King
893c3e538d drm/i2c: tda998x: set VIF for full range, underscanned display
Tested-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Reviewed-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2013-10-18 15:58:32 +01:00
Russell King
662af0d822 DRM: Armada: Add support for ARGB 32x64 or 64x32 hardware cursors
This patch adds ARGB hardware cursor support to the DRM driver for the
Marvell Armada SoCs.  ARGB cursors are supported at either 32x64 or
64x32 resolutions.

Tested-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Reviewed-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2013-10-18 15:53:30 +01:00
Jani Nikula
6da7f10d29 drm/i915/dp: don't mention eDP bpp clamping if it doesn't affect bpp
This is useful with the follow-up patch that frobs
dev_priv->vbt.edp_bpp, and the value no longer comes directly from
VBT.

Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-10-18 16:00:06 +02:00
Daniel Vetter
3c9d87e3ac drm/i915: remove dead code in ironlake_crtc_mode_set
In

Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date:   Wed Jun 5 13:34:23 2013 +0200

    drm/i915: consolidate pch pll enable sequence

I've removed all the code from this if block, but somehow forgotten to
kill the block itself.

Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-10-18 15:05:35 +02:00
Daniel Vetter
5a69b89f85 drm/i915: crc support for hsw
hw designers decided to change the CRC registers and coalesce them all
into one. Otherwise nothing changed. I've opted for a new hsw_ version
to grab the crc sample since hsw+1 will have the same crc registers,
but different interrupt source registers. So this little helper
function will come handy there.

Also refactor the display error handler with a neat pipe loop.

v2: Use for_each_pipe.

Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-10-18 15:05:35 +02:00
Daniel Vetter
e309a99770 drm/i915: fix CRC debugfs setup
We've set up all files, but removed only those for which we have a
pipe. Which leaves the one for pipe C on machines with less than 2
pipes, breaking module reload.

v2: We can't get at the drm device this early (wtf), so just register
all the files and also remove them all again.

Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-10-18 15:05:34 +02:00
Daniel Vetter
bcf17ab2e9 drm/i915: wait one vblank when disabling CRCs
This avoids a spurious spurious interrupt warning.

Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-10-18 15:05:34 +02:00
Daniel Vetter
8bc5e955f4 drm/i915: use ->get_vblank_counter for the crc frame counter
Suggested by Ville.

Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-10-18 15:05:33 +02:00
Daniel Vetter
5b3a856bcf drm/i915: wire up CRC interrupt for ilk/snb
We enable the interrupt unconditionally and only control it
through the enable bit in the CRC control register.

v2: Extract per-platform helpers to compute the register values.

Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-10-18 15:05:32 +02:00
Daniel Vetter
5a6b5c84e4 drm/i915: add CRC #defines for ilk/snb
Also add a new _PIPE_INC macro which takes an base plus increment.
Much less likely to botch the job by missing an s/A/B/ somewhere.

v2: They've moved the bitfield. Argh!

Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-10-18 15:05:32 +02:00
Daniel Vetter
eba94eb901 drm/i915: extract display_pipe_crc_update
The ringbuffer update logic should always be the same, but different
platforms have different amounts of CRC registers. Hence extract it.

Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-10-18 15:05:31 +02:00
Daniel Vetter
131a56dc41 drm/i915: don't Oops in debugfs for I915_FBDEV=n
Failed to properly test this.

Reported-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Tested-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-10-18 15:05:31 +02:00
Jani Nikula
1a91510dc3 drm/i915: set HDMI pixel clock in audio configuration
The HDMI audio expects HDMI pixel clock to be set in the audio
configuration. We've currently just set 0, using 25.2 / 1.001 kHz
frequency, which fails with some modes.

v2: Now with a commit message.

Reference: http://mid.gmane.org/CAGpEb3Ep1LRZETPxHGRfBDqr5Ts2tAc8gCukWwugUf1U5NYv1g@mail.gmail.com
Reference: http://mid.gmane.org/20130206213533.GA16367@hardeman.nu
Reported-by: David Härdeman <david@hardeman.nu>
Reported-by: Jasper Smet <josbeir@gmail.com>
Tested-by: Jasper Smet <josbeir@gmail.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-10-18 15:05:30 +02:00
Jani Nikula
34427052eb drm/i915: pass mode to ELD write vfuncs
This will be needed for setting the HDMI pixel clock for audio
config. No functional changes.

v2: Now with a commit message.

Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-10-18 15:05:29 +02:00
Daniel Vetter
c75b505dda cpufreq: Add dummy cpufreq_cpu_get/put for CONFIG_CPU_FREQ=n
The drm/i915 driver wants to adjust it's own power policies using the
cpu policies as a guideline (we can implicitly boost the cpus through
the gpus on some platforms). To avoid a dreaded select (since a
depends will leave users wondering where where their driver has gone
too) add dummy functions.

Reported-by: kbuild test robot <fengguang.wu@intel.com>
Cc: kbuild test robot <fengguang.wu@intel.com>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>
Cc: Viresh Kumar <viresh.kumar@linaro.org>
Cc: cpufreq@vger.kernel.org
Cc: linux-pm@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Acked-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-10-18 15:05:29 +02:00
Daniel Vetter
53155c0a59 drm/i915: check gem bo size when creating framebuffers
It's better to catch such fallout early, and this way we can rely on
the checking done by the drm core on fb->heigh/width at modeset time.

If we ever support planar formats on intel we might want to look into
a common helper to do all this, but for now this is good enough.

v2: Take tiling into account, requested by Ville.

v3: Fix tile height on gen2, spotted by Ville.

Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Requested-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-10-18 15:05:07 +02:00
Daniel Vetter
aa5f802181 drm/i915: Use unsigned long for obj->user_pin_count
At least on linux sizeof(long) == sizeof(void*) and the thinking
is that you can grab about as many references as there's memory.

Doesn't really matter, just a bit of OCD since the fixed size data
type in a pure in-kernel datastructure look off.

v2: Ville asked for an overflow check since no one prevents userspace
from incrementing the pin count forever.

v3: s/INT/LONG/, noticed by Chris.

Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-10-16 22:06:39 +02:00
Daniel Vetter
80075d492f drm/i915: prevent tiling changes on framebuffer backing storage
Assuming that all framebuffer related metadata is invariant simplifies
our userspace input data checking. And current userspace always first
updates the tiling of an object before creating a framebuffer with it.

This allows us to upconvert a check in pin_and_fence to a WARN.

In the future it should also be helpful to know which buffer objects
are potential scanout targets for e.g. frontbuffer rendering tracking
and similar things.

Note that SNA shipped for one prerelease with code which will be
broken through this patch. But users shouldn't notice since it's
purely an optimization and will transparently fall back to allocating
a new fb. i-g-t also had offending code (now fixed), but we don't
really care about breaking the test-suite.

Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Grumpily-reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-10-16 22:04:52 +02:00
Daniel Vetter
dd4916c55a drm/i915: grab dev->struct_mutex around framebuffer_init
We look at gem state (like obj->tiling/obj->stride), we better have
the relevant locks.

Right now this doesn't matter much since most of these checks are
a curtesy to safe buggy userspace, but I'd like to freeze the tiling
once we have framebuffer objects attached. And then locking matters.

Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-10-16 22:04:24 +02:00