In commit be8a42ae60 we inroduced a refcount problem, where on the
drm_gem_prime_fd_to_handle() error path we'll call dma_buf_put() for
self imported dma buffers.
Fix this by taking a reference on the dma buffer in the .gem_import
hook instead of assuming the caller had taken one. Besides fixing the
bug this is also more logical.
Signed-off-by: Imre Deak <imre.deak@intel.com>
Cc: stable@vger.kernel.org
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>
- ARM big.LITTLE cpufreq driver from Viresh Kumar.
- exynos5440 cpufreq driver from Amit Daniel Kachhap.
- cpufreq core cleanup and code consolidation from Viresh Kumar and
Stratos Karafotis.
- cpufreq scalability improvement from Nathan Zimmer.
- AMD "frequency sensitivity feedback" powersave bias for the ondemand
cpufreq governor from Jacob Shin.
- cpuidle code consolidation and cleanups from Daniel Lezcano.
- ARM OMAP cpuidle fixes from Santosh Shilimkar and Daniel Lezcano.
- ACPICA fixes and other improvements from Bob Moore, Jung-uk Kim,
Lv Zheng, Yinghai Lu, Tang Chen, Colin Ian King, and Linn Crosetto.
- ACPI core updates related to hotplug from Toshi Kani, Paul Bolle,
Yasuaki Ishimatsu, and Rafael J. Wysocki.
- Intel Lynxpoint LPSS (Low-Power Subsystem) support improvements
from Rafael J. Wysocki and Andy Shevchenko.
/
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Merge tag 'pm+acpi-3.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management and ACPI updates from Rafael J Wysocki:
- ARM big.LITTLE cpufreq driver from Viresh Kumar.
- exynos5440 cpufreq driver from Amit Daniel Kachhap.
- cpufreq core cleanup and code consolidation from Viresh Kumar and
Stratos Karafotis.
- cpufreq scalability improvement from Nathan Zimmer.
- AMD "frequency sensitivity feedback" powersave bias for the ondemand
cpufreq governor from Jacob Shin.
- cpuidle code consolidation and cleanups from Daniel Lezcano.
- ARM OMAP cpuidle fixes from Santosh Shilimkar and Daniel Lezcano.
- ACPICA fixes and other improvements from Bob Moore, Jung-uk Kim, Lv
Zheng, Yinghai Lu, Tang Chen, Colin Ian King, and Linn Crosetto.
- ACPI core updates related to hotplug from Toshi Kani, Paul Bolle,
Yasuaki Ishimatsu, and Rafael J Wysocki.
- Intel Lynxpoint LPSS (Low-Power Subsystem) support improvements from
Rafael J Wysocki and Andy Shevchenko.
* tag 'pm+acpi-3.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (192 commits)
cpufreq: Revert incorrect commit 5800043
cpufreq: MAINTAINERS: Add co-maintainer
cpuidle: add maintainer entry
ACPI / thermal: do not always return THERMAL_TREND_RAISING for active trip points
ARM: s3c64xx: cpuidle: use init/exit common routine
cpufreq: pxa2xx: initialize variables
ACPI: video: correct acpi_video_bus_add error processing
SH: cpuidle: use init/exit common routine
ARM: S5pv210: compiling issue, ARM_S5PV210_CPUFREQ needs CONFIG_CPU_FREQ_TABLE=y
ACPI: Fix wrong parameter passed to memblock_reserve
cpuidle: fix comment format
pnp: use %*phC to dump small buffers
isapnp: remove debug leftovers
ARM: imx: cpuidle: use init/exit common routine
ARM: davinci: cpuidle: use init/exit common routine
ARM: kirkwood: cpuidle: use init/exit common routine
ARM: calxeda: cpuidle: use init/exit common routine
ARM: tegra: cpuidle: use init/exit common routine for tegra3
ARM: tegra: cpuidle: use init/exit common routine for tegra2
ARM: OMAP4: cpuidle: use init/exit common routine
...
Enabling PPGTT and also the need to track which context was guilty of
gpu hang (arb robustness enabling) have put pressure for struct i915_hw_context
to be more than just a placeholder for hw context state.
In order to track object lifetime properly in a multi peer usage, add reference
counting for i915_hw_context.
v2: track i915_hw_context pointers instead of using ctx_ids
(from Chris Wilson)
v3 (Ben): Get rid of do_release() and handle refcounting more compactly.
(recommended by Chis)
v4: kref_* put inside static inlines (Daniel Vetter)
remove code duplication on freeing context (Chris Wilson)
v5: idr_remove and ctx->file_priv = NULL in destroy ioctl (Chris)
This actually will cause a problem if one destroys a context and later
refers to the idea of the context (multiple contexts may have the same
id, but only 1 will exist in the idr).
v6: Strip out the request related stuff. Reworded commit message.
Got rid of do_destroy and introduced i915_gem_context_release_handle,
suggested by Chris Wilson.
v7: idr_remove can't be called inside idr_for_each (Chris Wilson)
Signed-off-by: Ben Widawsky <ben@bwidawsk.net> (v5)
Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com> (v7)
Reviewed-by: Ben Widawsky <ben@bwidawsk.net>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
[danvet: Squash sob lines, the patch ping-ponged between Ben and Mika
a bit ...]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Reduce the size of the the src/dst viewport to keep the scalign ratios
in check.
v2: Below min size sprite handling squashed to previous patch
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Properly clip the source when the destination gets clipped
by the pipe dimensions.
Sadly the video sprite hardware is rather limited so it can't do proper
sub-pixel postitioning. Resort to truncating the source coordinates to
(macro)pixel boundary.
The scaling checks are done using the strict drm_region functions.
Which means that an error is returned when the min/max scaling
ratios are exceeded.
Also do some additional checking against various hardware limits.
v2: Truncate src coords instead of rounding to avoid increasing src
viewport size, and adapt to changes in drm_calc_{h,v}scale().
v3: Adapt to drm_region->drm_rect rename. Fix misaligned crtc_w for
packed YUV formats when scaling isn't supported.
v4: Use stricter scaling checks, use drm_rect_equals()
v5: If sprite is below min size, make it invisible instead returning
an error.
Use WARN_ON() instead if BUG_ON(), and add one to sanity check the
src viewport size.
v6: Add comments to remind about src and dst coordinate types
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Writing hw registers from compute_config?
Just say no!
In this case not too horrible since we write a constant 0, and only
debugging would put something else in there. But while checking that
code I've noticed that this register disappeared on pch platforms, so
fix that up, too.
And adjust the comment a bit, it's outdated.
Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This was still required a bit (on the cargo-cult side though) when the
state was stored in dev_priv, and when the enable/disable sequence was
botched a bit (to avoid too many updates).
But with pipeconfig we always get a clean slate, so this is pointless.
Rip it out.
Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
pipe_config is the new dev_priv!
More seriously, this is actually better since a pipe_config can be
thrown away if the modeset compute config stage fails. Whereas any
state stored in dev_prive needs to be painstakingly restored, since
otherwise a dpms off/on will wreak massive havoc. Yes, that even
applies to state only used in ->mode_set callbacks, since we need to
call those even for dpms on when the Haswell power well cleared
everything out.
Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
As we recompute the remaining timeout after waiting, there is a
potential for that timeout to be less than zero and so need sanitizing.
The timeout is always returned to userspace and validated, so we should
always perform the sanitation.
v2 [vsyrjala]: Only normalize the timespec if it's invalid
v3: Add a comment to clarify the situation and remove the now
useless WARN_ON() (ickle)
Cc: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Tested-by: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Both intel_opregion_enable_asle() and intel_enable_asle() have shrunk
considerably. Merge them together into a static function in i915_irq.c,
and rename to better reflect the purpose and the related platforms.
No functional changes.
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Realize that intel_enable_asle() is never called on PCH-split platforms
or on VLV. Rip out the GSE irq enable for PCH-split platforms, which
also happens to be incorrect for IVB+.
This should not cause any functional changes.
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Stop calling intel_opregion_enable_asle() and consequently
intel_enable_asle() on opregion init. It should not be necessary for
these reasons:
1) On PCH split platforms, it only enables GSE interrupt, which is
enabled in irq postinstall anyway. Moreover, the irq enable uses the
wrong bit on IVB+.
2) On gen 2, it would enable a reserved pipestat bit. If there were gen
2 systems with opregion asle support, that is. And the gen 2 irq
handler won't handle it anyway.
3) On gen 3-4, the irq postinstall will call
intel_opregion_enable_asle() to enable the pipestat.
In short, move the asle irq/pipestat enable responsibility to irq
postinstall, which already happens to be in place.
This should not cause any functional changes, but only do the one line
change here for easier bisectability, just in case, and leave all the
cleanups this allows to followup patches.
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Only set ASLE driver readiness (ARDY) and technology enabled indicator
(TCHE) once per opregion init. There should be no need to do that at irq
postinstall time. Also clear driver readiness at fini.
While at it, add defines for driver readiness.
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Move near other defines, add TCHE in the name. No functional changes.
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Just a few important fixes for 3.10. 3 regression fixes, plus rectified
Haswell overclock support (the old code was correct, only docs confusing)
and improved DP data m/n selection.
* 'drm-intel-fixes' of git://people.freedesktop.org/~danvet/drm-intel:
drm/i915: correct the calculation of first_pd_entry_in_global_pt
Revert "drm/i915: Don't overclock on Haswell"
drm/i915: Make data/link N value power of two
drm/i915: avoid full modeset when changing the color range properties
drm/i915: Fall back to bit banging mode for DVO transmitter detection
This does duplicate the logic in intel_crtc_mode_get a bit, but the
issue is that we also should handle interlace modes and other insanity
correctly.
Hence I've opted for a sligthly more elaborate route where we first
read out the crtc timings for the adjusted mode, and then optionally
(not sure if we really need it) compute the modeline from that.
v2: Also read out the pipe source dimensions into the requested mode.
v3: Rebase on top of the moved cpu_transcoder.
v4: Simplify CHECK_FLAGS logic as suggested by Chris Wilson. Also
properly #undef that macro again.
Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com> (v3)
[danvet: Use the existing mask for interlaced bits, spotted by Mika.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
We want to use the fdi m/n values to easily compute the adjusted mode
dotclock on pch ports. Hence make sure the values stored in the pipe
config are always reliable.
v2: Fixup FDI TU readout.
v3: Rebase on top of moved cpu_transcoder.
Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This code will get _really_ repetive, and we'll end up with tons more
of this kind. So extract the common patterns.
This should also help when we add a lazy pipe_config compare mode for
fastboot.
Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
So on a bunch of setups we only have 2 fdi lanes available, e.g. hsw
VGA or 3 pipes on ivb. And seemingly a lot of modes don't quite fit
into this, among them the default 1080p mode.
The solution is to dither down the pipe a bit so that everything fits,
which this patch implements.
But ports compute their state under the assumption that the bpp they
pick will be the one selected, e.g. the display port bw computations
won't work otherwise. Now we could adjust our code to again up-dither
to the computed DP link parameters, but that's pointless.
So instead when the pipe needs to adjust parameters we need to retry
the pipe_config computation at the encoder stage. Furthermore we need
to inform encoders that they should not increase bandwidth
requirements if possible. This is required for the hdmi code, which
prefers the pipe to up-dither to either of the two possible hdmi bpc
values.
LVDS has a similar requirement, although that's probably only
theoretical in nature: It's unlikely that we'll ever see an 8bpc
high-res lvds panel (which is required to hit the 2 fdi lane limit).
eDP is the only thing which could increase the pipe_bpp setting again,
even when in the retry-loop. This could hit the WARN. Two reasons for
not bothering:
- On many eDP panels we'll get a black screen if the bpp settings
don't match vbt. So failing the modeset is the right thing to do.
But since that also means it's the only way to light up the panel,
it should work. So we shouldn't be able to hit this WARN.
- There are still opens around the eDP panel handling, and maybe we
need additional tricks. Before that happens it's imo no use trying
to be too clever.
Worst case we just need to kill that WARN or maybe fail the compute
config stage if the eDP connector can't get the bpp setting it wants.
And since this can only happen with an fdi link in between and so for
pch eDP panels it's rather unlikely to blow up, if ever.
v2: Rebased on top of a bikeshed from Paulo.
v3: Improve commit message around eDP handling with the stuff
things with Imre.
Reviewed-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
We need to multiply the hdmi port dotclock by 1.5x since it's not
really a dotclock, but the 10/8 encoding bitclock divided by 10.
Also add correct limit checks for the dotclock and reject modes which
don't fit. HDMI 1.4 would allow more, but our hw doesn't support that
unfortunately :(
Somehow I suspect 12bpc hdmi output never really worked - we really
need an i-g-t testcase to check all the different pixel modes and
outputs.
v2: Fixup the adjusted port clock handling - we need to make sure that
the fdi link code still gets the real pixelclock.
v3: g4x/vlv don't support 12bpc hdmi output so drop the bogus comment.
Acked-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
[danvet: Switch dotclock limit check to <= as suggested by Ville.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This allows us to use all 4 fdi lanes on fdi B when the cpu eDP is
running on pipe C. Yay!
v2: Encapsulate test into a little helper function, as suggested by
Chris Wilson.
Reviewed-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This nicely allows us to drop some hacks which have only been used
to work around modeset failures due to lack of fdi lanes.
v2: Implement proper checking for Haswell platforms - the fdi link to
the LPT PCH has only 2 lanes. Note that we already filter out
impossible modes in intel_crt_mode_valid. Unfortunately LPT does not
support 6bpc on the fdi rx, so we can't pull clever tricks to squeeze
in a few more modes.
v2: Rebased on top of Ben Widawsky's num_pipes reorg.
v3: Rebase on top of Ville's pipe debug output ocd rampage.
v4: Fixup rebase fail spotted by Ville.
v5: Fixup rebase fail spotted by Imre Deak. I suck.
Cc: Imre Deak <imre.deak@intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Again in preparation to move the configuration checks into the
pipe_config computation stage of the modeset sequence.
Reviewed-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Now that it's split up, we can easily move it around and precompute
the fdi lane configuration.
Reviewed-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
And also move the computed m_n values into the pipe_config. This is a
prep step to move the fdi state computation completely into the
prepare phase of the modeset sequence. Which will allow us to handle
fdi link bw constraints in a better way.
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
v2: Introduce some nice #defines for the FDI lane width fields and put
them to good use. Suggested by Ville.
v3: Fixup the mask vs. shift copy&pasta fail Imre Deak spotted, and
use the shift #define also in the mask.
Cc: Imre Deak <imre.deak@intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
We need this for two reasons:
- Correct handling of shared fdi lanes on ivb with fastboot.
- Handling fdi link bw limits when we only have two fdi lanes by
dithering down a bit.
Just search&replace in this patch, no functional change at all.
Reviewed-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Totally untested due to lack of screens supporting more than 8bpc. But
now we should have closed all holes in our bpp handling, so this
should be safe. The last missing piece was 10bpc support for g4x/vlv,
since we directly use the pipe bpp to feed the display link (and
anyway, only the cpt has any means to have a pipe bpp != the display
link bpp).
Reviewed-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
The current code is rather ... ugly. The only thing it managed to pull
off is getting 6bpc on DP working on g4x. Then someone added another
custom hack for 6bpc eDP on vlv. Fix up this entire mess by properly
implementing the PIPECONF-based dither/bpc controls on g4x/vlv.
Note that compared to pch based platforms g4x/vlv don't support 12bpc
modes. g4x is already caught, extend the check for vlv.
The other fixup is to restrict the lvds-specific dithering to early
gen4 devices - g4x should use the pipeconf dither controls. Note that
on gen2/3 the dither control is in the panel fitter even.
v2: Don't enable dithering when the pipe is in 10 bpc mode. Quoting
from Bspec "PIPEACONF - Pipe A Configuration Register, bit 4":
"Programming note: Dithering should only be enabled for 8 bpc or 6
bpc."
v3: Actually drop the old ugly dither code.
v4: Explain in a short comment why g4x/vlv shouldn't dither for 30 bpp
pipes (Jesse).
v5: Also clear the dither type correctly as spotted by Ville.
v6: As Ville pointed out we need to indeed set the dithering both in
the pipeconf register (for DP outputs) and in the LVDS port register
(for LVDS ouputs). Otherwise LVDS panel will not get properly
dithered. The old patch got away with this since it forgot to clear
the LVDS dither bit ...
v7: Remove redundant BPC_MASK clearing, spotted by Ville.
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>
They can get at the adjusted mode through intel_crtc->config.
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
We've had our fair share of woes already which showed that we can't
rely on the bpc limits in the EDID for eDP panels without risking
black screens. So now we limit the depth by what the BIOS recommends
in the VBT:
commit 2f4f649a69
Author: Jani Nikula <jani.nikula@intel.com>
Date: Mon Nov 12 14:33:44 2012 +0200
drm/i915: do not ignore eDP bpc settings from vbt
But that's not enough, since at least the panel on my ASUS Zenbook
Prime here is also unhappy if the bpc is too low. Hence just take the
firmware value and dither to get what flimsy panels want.
Like before we ensure that we don't change the bpp if the firmware
doesn't provide a value, see
commit 9a30a61f35
Author: Jani Nikula <jani.nikula@intel.com>
Date: Mon Nov 12 14:33:45 2012 +0200
drm/i915: do not default to 18 bpp for eDP if missing from VBT
v2: Apparently there are some horribly broken eDP panels around which
only work if the DP link is set up as if we want to driver a 24bpp
mode, but still only work if the data is feed at 18bpp. See
commit 57c2196332
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date: Thu Apr 4 17:19:37 2013 +0200
drm/i915: revert eDP bpp clamping code changes
for the gory details.
Adjust the patch accordingly and update all the relevant comments.
v3: Give up on the cargo-culting v2 attempt and just enfore the edp
bpp value if it's there. Broken panels be damned!
Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Paulo Zanoni <przanoni@gmail.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Tested-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This hack is getting a bit messy, but this plugs the leak for now
until we have the cpu_transcoder properly pipe_config'ed.
Cc: Imre Deak <imre.deak@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
* acpi-hotplug:
ACPI / memhotplug: Remove info->failed bit
ACPI / memhotplug: set info->enabled for memory present at boot time
ACPI: Verify device status after eject
acpi: remove reference to ACPI_HOTPLUG_IO
ACPI: Update _OST handling for notify
ACPI: Update PNPID match handling for notify
ACPI: Update PNPID set/free interfaces
ACPI: Remove acpi_device dependency in acpi_device_set_id()
ACPI / hotplug: Make acpi_hotplug_profile_ktype static
ACPI / scan: Make memory hotplug driver use struct acpi_scan_handler
ACPI / container: Use hotplug profile user space interface
ACPI / hotplug: Introduce user space interface for hotplug profiles
ACPI / scan: Introduce acpi_scan_handler_matching()
ACPI / container: Use common hotplug code
ACPI / scan: Introduce common code for ACPI-based device hotplug
ACPI / scan: Introduce acpi_scan_match_handler()
When ppgtt is enabled, dev_priv->gtt.total has excluded the gtt space
occupied by ppgtt table in i915_gem_init_global_gtt() function. So the
calculation of first_pd_entry_in_global_pt doesn't need to subtract
I915_PPGTT_PD_ENTRIES again. Or else PPGTT directory table will be
destroyed by global gtt allocation.
This regression has been introduced in
commit a54c0c279f
Author: Ben Widawsky <ben@bwidawsk.net>
Date: Thu Jan 24 14:45:00 2013 -0800
drm/i915: remove intel_gtt structure
The breakage is pretty subtile since the old gtt_total_entries
included the pde range, whereas the new on did not.
Cc: stable@vger.kernel.org
Signed-off-by: Xiong Zhang<xiong.y.zhang@intel.com>
[danvet: Add regression citation and cc: stable. Thanks to Chris for
correcting my wrong guess about which commit broke things.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Instead of repeatedly bombarding the user with a request to reboot and
increase the stolen size with every fb refresh, just inform them the
first time only.
v2: Rearrange code so the hint to increase the amount of memory stolen
by the BIOS is only emitted if we fail to find sufficient stolen memory
for FBC.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
[danvet: Fixup formatting code mismatch that gcc spotted.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
We prevent invalid ones from getting here in the first place, but it
doesn't hurt to have an extra sanity check.
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
And put the pfit stuff into substructs while we're at it.
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This gets the panel fitter working on eDP on VLV, and should also apply
to eDP panels on G4x chipsets (if we ever detect and mark an all-in-one
panel as eDP anyway).
A few cleanups are still possible on top of this, for example the LVDS
border control could be placed in the LVDS encoder structure and updated
based on the result of the panel fitter calculation.
Multi-pipe fitting isn't handled correctly either if we ever get a config
that wants to try the panel fitter on more than one output at a time.
v2: use pipe_config for storing pfit values (Daniel)
add i9xx_pfit_enable function for use by 9xx and VLV (Daniel)
v3: fixup conflicts and lvds_dither check
Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
[danvet: fix up botched conflict resolution from Jesse:
- border = LVDS_BORDER_ENABLE was lost for CENTER scaling
- comment about gen2/3 panel fitter scaling was lost
- dev_priv->lvds_dither reintroduced.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
We only ever check whether it's strictly bigger than one, so all the
is_sdvo/is_hdmi checks are redundant. Flatten the code a bit.
Also, s/temp/dpll_md/
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
If we compute the pch pll state, we _have_ a pch encoder.
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
g4x dplls and ilk+ pch plls have a separate field for the reduced p1
setting, so this restriction does not apply. Only older platforms have
the restriction that the p1 divisors must match.
This unnecessary restriction has been introduced in
commit cec2f356d5
Author: Sean Paul <seanpaul@chromium.org>
Date: Tue Jan 10 15:09:36 2012 -0800
drm/i915: Only look for matching clocks for LVDS downcloc
Note that with lvds the p2 divisors _always_ match for LVDS, and we
don't support auto-downclocking anywhere else. On eDP downclocking
works with separate data m/n settings, using the same link clock.
Cc: Sean Paul <seanpaul@chromium.org>
Reviewed-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Up to now we've relied on the bios to get this right for us. Let's try
out whether our code has improved a bit, since we should dither
always when the output bpp doesn't match the plane bpp.
- gen5+ should be fine, since we only use the bios hint as an upgrade.
- gen4 changes, since here dithering is still controlled in the lvds
register.
- gen2/3 has implicit dithering depeding upon whether you use 2 or 3
lvds pairs (which makes sense, since it only supports 8bpc pipe
outpu configurations).
- hsw doesn't support lvds.
v2: Remove redudant dither setting.
v3: Completly drop reliance on dev_priv->lvds_dither.
v4: Enable dithering on gen2/3 only when we have a 18bpp panel, since
up-dithering to a 24bpp panel is not supported by the hw. Spotted by
Ville.
v5: Also only enable lvds port dithering on gen4 for 18bpp modes. In
practice this only excludes dithering a 10bpc plane down for a 24bpp
lvds panel. Not something we truly care about. Again noticed by Ville.
v6: Actually git add.
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>
With the exception of hsw, which has dedicated DP clocks which run at
the fixed frequency already, and vlv, which doesn't have optmized
pre-defined dp clock parameters (yet).
v2: Ville asked me to elaborate a bit more on the longer-term goals
wrt dpll settings computation:
So ultimately my idea is that in the compute config stage first the crtc
code puts the default platform pll limits into the pipe_config. Then
encoders can either overwrite that limit structure with their own special
stuff (mostly for lvds madness). Or they can pick some or all of the
parameters (e.g. just the p2 switchover on hdmi, or all the clock
parameters for dp/sdvo tv).
Once that's done then the generic crtc code can fill out any missing bits
(using the find_best_pll code) and then try to assign which pll to use (if
it's a platform with shared plls). In the end the modeset could should
simply write the computed stuff into registers and never be able to fail.
Of course there's still a lot of data to be moved into pipe_config to make
this all happen, hence some of the temporary ugliness.
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org> (v1)
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This was somehow lost in the pipe_config->dpll introduction in
commit f47709a950
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date: Thu Mar 28 10:42:02 2013 +0100
drm/i915: create pipe_config->dpll for clock state
While at it, extract a few small helpers for common computations.
v2: Use the newly added helpers more thanks to Ville's trick to
typedef the legacy intel_clock_t as the new-world struct dpll.
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>
We need the dpll/fp/fp2 values only when we need a pch pll. So move
them together with the code to acquire such a pll.
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Between ivb, hsw and vlv, only Ivybridge has sprites with scaling
capabilities.
Also make max_downscale coherent with that.
v2: Rebase on top of the recent ivb/vlv/hsw sprite scaling fixes.
Signed-off-by: Damien Lespiau <damien.lespiau@intel.com> (v1)
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
v2: Make TRANSCODER_EDP handling more explicit. (Imre)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
With the previous work asle and gse interrupt handlers should now be
functionally the same. Drop the duplicated code.
v2: Drop intel_opregion_gse_intr() also in the !CONFIG_ACPI path. (Damien)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
In theory, the BIOS should not even request these from us now that we
aren't claiming we support these, but when it does anyway, don't pretend it
succeeded. It should be the right thing to do, but might confuse the BIOS.
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
In theory, this should prevent the BIOS from requesting them from us, and
this should be the right thing.
In practice, this is not always the case, and might surprise the BIOS.
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Backlight data and registers are fiddled through LVDS/eDP modeset
enable/disable hooks, backlight sysfs files, asle interrupts, and register
save/restore. Protect the backlight related registers and driver private
fields using a spinlock.
The locking in register save/restore covers a little more than is strictly
necessary, including non-modeset case, for simplicity.
v2: Cover register access, save/restore, i915_read_blc_pwm_ctl() and code
paths leading there.
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
In preparation of adding locking to backlight, make max backlight value
(the modulation frequency the PWM duty cycle value must not exceed)
internal to intel_panel.c.
Have intel_panel_set_backlight() accept a caller defined range for level,
and scale input to max backlight value internally.
Clean up intel_panel_get_max_backlight() and usage internally.
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
The LPT PCH only supports 8bpc, so we need to force the pipe bpp
to the right value.
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Prevents black screens when using 30bpp framebuffers on my
HDMI screens here. The DP input on the same screen though reports a
1.4 EDID with the correct 8bpc limit set.
v2: Actually check for the right thing!
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Our rps code relies on the interrupts being off to prevent re-arming
of the work items at inopportune moments.
Also drop the redundant cancel_work for the main rps work,
disable_gt_powersave already takes care of that.
Finally add a WARN_ON to ensure we obey that piece of ordering
constraint. Long term I want to lock down the setup/teardown code in a
similar way to how we painstakingly check modeset sequence constraints
already.
v2: Disable polling after hpd handling is shut down - since Egbert's
hpd irq storm handling the hotplug work can re-arm the polling
handler. Spotted by Jani Nikula.
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Cc: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
We don't want to write reserved regs here, and may want to do other bits
in the future, so split it out.
Reported-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Ville noticed this while doing another review; we may as well cancel
this work just to make sure we don't try anything fancy after disabling
the RPS interfaces.
Reported-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
On VLV, the Punit doesn't automatically drop the GPU to it's minimum
voltage level when entering RC6, so we arm a timer to do it for us from
the RPS interrupt handler. It'll generally only fire when we go idle
(or if for some reason there's a long delay between RPS interrupts), but
won't be re-armed again until the next RPS event, so shouldn't affect
power consumption after we go idle and it triggers.
v2: use delayed work instead of timer + work queue combo (Ville)
v3: fix up delayed work cancel (must be outside lock) (Daniel)
fix up delayed work handling func for delayed work (Jesse)
v4: cancel delayed work before RPS shutdown (Jani)
pass delay not absolute time to mod_delayed_work (Jani)
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This reverts commit fec46b5eff.
The latest version of our PM programming doc (which is WAY better than
previous versions, and thanks for that) says something along the lines
of, "On Haswell overclocking is no long achieved via mailbox registers."
Which I misinterpreted as, the driver must done something different than
it did on IVB, and SNB.
It appears I jumped the gun, and that's all false. We've gotten some
clarification, and it appears at least *reading* the overclocking
information works in exactly the same manner.
Cc: kim.l.saw-chu@intel.com
Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
The BIOS uses power of two values for the data/link N value.
Follow suit to make the Zotac DP to dual-HDMI dongle work.
v2: Clean up the magic numbers and defines
Change the N clamping to be a bit easier on the eye
Rename intel_reduce_ratio to intel_reduce_m_n_ratio
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=49402
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=59810
Tested-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Let's introduce one more of those orthogonal feature macros. This should
hopefully make the code more readable and make things easier for new platform
enabling.
This time, HAS_FPGA_DBG_UNCLAIMED() is true for platforms that have bit
31 of FPGA_DBG able to signal unclaimed writes.
Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This way, when adding a device flag we don't have to manually maintain
that list.
v2: undefine the helper macros (Jani Nikula, Daniel Vetter)
Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
DEV_INFO_FOR_FLAG() now takes 2 parameters:
• A function to apply to the flag
• A separator
This will allow us to use the macro twice in the DRM_DEBUG_DRIVER() call
of i915_dump_device_info().
v2: Fix a typo in the subject (Jani Nikula)
v3: Undef the helper macros (Jani Nikula, Daniel vetter)
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Instead of calling into the DRM helper layer to poll all connectors for
changes in connected displays probe only those connectors which have
received a hotplug event.
v2: Resolved conflicts with changes in previous commits.
Renamed function and and added a WARN_ON() to warn of
intel_hpd_irq_event() from being called without
mode_config.mutex held - suggested by Jani Nikula.
Signed-off-by: Egbert Eich <eich@suse.de>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This way it is possible to limit 're'-detect() of displays to connectors
which have received an HPD event.
v2: Reordered drm_i915_private: Move hpd_event_bits to hpd state tracking.
v3: Fixed merge conflicts with previous patches.
Signed-off-by: Egbert Eich <eich@suse.de>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Automatic color range selection was added in
commit 55bc60db59
Author: Ville Syrjälä <ville.syrjala@linux.intel.com>
Date: Thu Jan 17 16:31:29 2013 +0200
drm/i915: Add "Automatic" mode for the "Broadcast RGB" property
but that removed the check to avoid a full modeset if the value is
unchanged. Unfortunately X sets all properties with their current
value at start-up, resulting in some ugly flickering which shouldn't
be there.
v2: Change old_range from bool to uint32_t, spotted by Ville.
v3: Actually git add everything ;-)
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
We need to hold the rps lock around punit access.
Reported-by: Kenneth Graunke <kenneth@whitecape.org>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Now that we have function pointers, it's cleaner to just create a new
per-platform PTE encoding function.
This should be identical in behavior to the previous code.
v2: Drop accidental inline keyword on hsw_pte_encode.
Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Tested-by: Daniel Leung <daniel.leung@linux.intel.com> [v1]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
On Bay Trail, bit 1 means "writeable by the GPU." Failing to set that
means basically anything using the GPU will cause hangs.
v2: Drop accidental inline keyword on byt_pte_encode.
Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Tested-by: Daniel Leung <daniel.leung@linux.intel.com> [v1]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Sandybridge/Ivybridge, Bay Trail, and Haswell all have slightly
different page table entry formats. Rather than polluting one function
with generation checks, simply use a function pointer and set up the
correct PTE encoding function at startup.
v2: Move the gen6_gtt_pte_t typedef to i915_drv.h so that the function
pointers and implementations have identical signatures. Also remove
inline keyword on gen6_pte_encode. Both suggested by Jani Nikula.
Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Jani Nikula <jani.nikula@linux.intel.com>
Tested-by: Daniel Leung <daniel.leung@linux.intel.com> [v1]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Daniel writes:
As promised a stash of (mostly) fixes. Two pieces of non-fixes included:
- A notch more gtt refactoring from Ben, beating to death with igt in our
nightly testing.
- Support for display display-less server chips (again from Ben). New hw
support which is only likely to break itself ;-)
Otherwise just tons of fixes:
- hpd irq storm mitigation from Egbert Eich. Your -next tree already has
the infrastructure, this here just supplies the logic.
- sdvo hw state check fix from Egbert Eich
- fb cb tune settings for the pch pll clocks on cpt/ppt
- "Bring a bigger gun" coherence workaround for multi-threade, mulit-core
& thrashing tiled gtt cpu access from Chris.
- Update haswell mPHY code.
- l3$ caching for context objects on ivb/hsw (Chris).
- dp aux refclock fix for haswell (Jani)
- moar overclocking fixes for snb/ivb (Ben)
- ecobits ppgtt pte caching control fixes from Ville
- fence stride check fixes and limit improvements (Ville)
- fix up crtc force restoring, potentially resulting in tons of hw state
check WARNs
- OOPS fix for NULL derefencing of fb pointers when force-restoring a crtc
when other crtcs are disabled and the force-restored crtc is _not_ the
first one.
- Fix pfit disabling on gen2/3.
- Haswell ring freq scaling fixes (Chris).
- backlight init/teardown fix (failed eDP init killed the lvds backlight)
from Jani
- cpt/ppt fdi polarity fixes from Paulo (should help a lot of the FDI link
train failures).
- And a bunch of smaller things all over.
* 'drm-intel-fixes' of git://people.freedesktop.org/~danvet/drm-intel: (56 commits)
drm/i915: fix bpc vs. bpp confusion in intel_crtc_compute_config
drm/i915: move cpu_transcoder to the pipe configuration
drm/i915: preserve the PBC bits of TRANS_CHICKEN2
drm/i915: set CPT FDI RX polarity bits based on VBT
drm/i915: Add Reenable Timer to turn Hotplug Detection back on (v4)
drm/i915: Disable HPD interrupt on pin when irq storm is detected (v3)
drm/i915: Mask out the HPD irq bits before setting them individually.
drm/i915: (re)init HPD interrupt storm statistics
drm/i915: Add HPD IRQ storm detection (v5)
drm/i915: WARN when LPT-LP is not paired with ULT CPU
drm/i915: don't intel_crt_init on any ULT machines
drm/i915: remove comment about IVB link training from intel_pm.c
drm/i915: VLV doesn't have LLC
drm/i915: Scale ring, rather than ia, frequency on Haswell
drm/i915: shorten debugfs output simple attributes
drm/i915: Fixup pfit disabling for gen2/3
drm/i915: Fixup Oops in the pipe config computation
drm/i915: ensure single initialization and cleanup of backlight device
drm/i915: don't touch the PF regs if the power well is down
drm/i915: add intel_using_power_well
...
This allows unifying a bunch of the PLL calculations and whatnot.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Minor cleanup. Would be nice to use an enum for channel in the DPIO
macros so we don't mix up pipes and channels, but that's for another
patch.
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
As discussed in this thread
http://lists.freedesktop.org/archives/dri-devel/2013-April/037411.html
GMBUS based DVO transmitter detection seems to be unreliable which could
result in an unusable DVO port.
The attached patch fixes this by falling back to bit banging mode for
the time DVO transmitter detection is in progress.
Signed-off-by: David Müller <d.mueller@elsoft.ch>
Tested-by: David Müller <d.mueller@elsoft.ch>
Cc: stable@vger.kernel.org
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
We are trying to have more platform-orthogonal pieces of code. The DDI
code shouldn't mention Haswell.
v2: Fix the email address
Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Shame on me for not putting the bit definitions next to the register
definition in the first place.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
... inside haswell_get_pipe_config. Because there's one TRANS_DDI_FUNC_CTL
register per CPU transcoder, not per pipe. This solves "unclaimed register"
messages when booting with eDP only and using the i915.disable_power_well=1.
Also fix a comment and remove an useless empty line.
The error messages were caused by:
commit 88adfff1ad
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date: Thu Mar 28 10:42:01 2013 +0100
drm/i915: hw readout support for ->has_pch_encoders
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This fixes "unclaimed register" messages when booting with eDP only
and i915.disable_power_well=1.
The error messages were caused by:
commit 0e8ffe1bf8
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date: Thu Mar 28 10:42:00 2013 +0100
drm/i915: add hw state readout/checking for pipe_config
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This is bad news and shouldn't be happening.
V2: Rebase.
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
In this commit we enable both CPU and PCH FIFO underrun reporting and
start reporting them. We follow a few rules:
- after we receive one of these errors, we mask the interrupt, so
we won't get an "interrupt storm" and we also won't flood dmesg;
- at each mode set we enable the interrupts again, so we'll see each
message at most once per mode set;
- in the specific places where we need to ignore the errors, we
completely mask the interrupts.
The downside of this patch is that since we're completely disabling
(masking) the interrupts instead of just not printing error messages,
we will mask more than just what we want on IVB/HSW CPU interrupts
(due to GEN7_ERR_INT) and on CPT/PPT/LPT PCHs (due to SERR_INT). So
when we decide to mask PCH FIFO underruns for pipe A on CPT, we'll
also be masking PCH FIFO underruns for pipe B, because both are
reported by SERR_INT, which has to be either completely enabled or
completely disabled (in othe words, there's no way to disable/enable
specific bits of GEN7_ERR_INT and SERR_INT).
V2: Rename some functions and variables, downgrade messages to
DRM_DEBUG_DRIVER and rebase.
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
In Valleyview voltage swing, pre-emphasis and lane control registers can
be programmed only through the h/w side band fabric. Update
vlv_update_pll, i9xx_crtc_enable, and intel_enable_pll with the
appropriate programming.
We need to make sure that the tx lane reset occurs in both the full mode
set and DPMS paths, so factor things out to allow that.
v2: use different DPIO_DIVISOR values for VGA and DisplayPort
v3: Fix update pll logic to use same DPIO_DIVISOR & DPIO_REFSFR values
for all display interfaces
v4: collapse with various updates
v5: squash with crtc enable/pll enable bits
v6: split out DP code (jbarnes)
put phyready check under IS_VALLEYVIEW (jbarnes)
remove unneeded check in 9xx pll div update (Jani)
wrap VLV pll update call in IS_VALLEYVIEW (Jani)
move port enable back to end of crtc enable (jbarnes)
put phyready check under IS_VALLEYVIEW (jbarnes)
v7: fix up conflicts against latest drm-intel-next-queued
v8: use DPIO reg names, fix pipes (Jani)
from mPhy_registers_VLV2_ww20p5 doc
v9: update to latest info from driver enabling notes doc
driver_vbios_notes_9
v10: fixup a bit of pipe/port confusion to allow eDP and HDMI to work
simultaneously (Jesse)
v11: use pll/port callbacks for DPIO port activity (Daniel)
use separate VLV CRTC enable function (Daniel)
move around port ready checks (Jesse)
Signed-off-by: Pallavi G <pallavi.g@intel.com>
Signed-off-by: Vijay Purushothaman <vijay.a.purushothaman@intel.com>
Signed-off-by: Gajanan Bhat <gajanan.bhat@intel.com>
Signed-off-by: Ben Widawsky <benjamin.widawsky@intel.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
[danvet: Drop pfit changes and add a little comment explaining that
vlv has a different enable sequence and so needs it's own crtc_enable
callback. Also apply a fixup patch from Wu Fengguang to shut up some
compiler warnings.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This is a reset feature we don't actually need.
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
[danvet: Make it compile.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Program few Tx buffer Swing control settings through DPIO.
v2: fix up codingstyle (Daniel)
call from set_signal_levels (Ville, Daniel)
use proper port numbers (Jesse)
Signed-off-by: Pallavi G <pallavi.g@intel.com>
Signed-off-by: Yogesh M <yogesh.mohan.marimuthu@intel.com>
Signed-off-by: Gajanan Bhat <gajanan.bhat@intel.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org> (v2 changes)
[danvet: Reorder if-ladder to avoid two IS_VLV checks.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Stolen from a patch with the below impressive sob-section.
Signed-off-by: Pallavi G <pallavi.g@intel.com>
Signed-off-by: Vijay Purushothaman <vijay.a.purushothaman@intel.com>
Signed-off-by: Gajanan Bhat <gajanan.bhat@intel.com>
Signed-off-by: Ben Widawsky <benjamin.widawsky@intel.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
[danvet: Drop everything but the header #defines.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Magic updates.
v2: use 64 bit types and math (Ville)
v3: Trim out all the m/n/p calculation changes since they are still
under discussion. Instead squash in a fixup for hdmi limits which
slipped into a different patch.
Signed-off-by: Pallavi G <pallavi.g@intel.com>
Signed-off-by: Vijay Purushothaman <vijay.a.purushothaman@intel.com>
Signed-off-by: Yogesh M <yogesh.mohan.marimuthu@intel.com>
Signed-off-by: Gajanan Bhat <gajanan.bhat@intel.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org> (v2)
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Uses slightly different interfaces than other platforms.
v2: track actual set freq, not requested (Rohit)
fix debug prints in init code (Jesse)
v3: don't write sleep reg (Jesse)
re-add RC6 wake limit write (Ben)
fixup thresholds to match other platforms (Ben)
clean up mem freq calculation (Ben)
clean up debug prints (Ben)
v4: move defines from punit patch (Ville)
v5: remove writes to nonexistent regs (Jesse)
put RP and RC regs together (Jesse)
fix RC6 enable (Jesse)
v6: use correct fuse reads from NC (Jesse)
split out min/max funcs for use in sysfs (Jesse)
add debugfs & sysfs freq controls (Jesse)
v7: update with Ben's hw_max changes (Jesse)
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Reviewed-by: Ben Widawsky <ben@bwidawsk.net> (v6)
[danvet: Follow checkpatch sugggestion to use min_t to avoid casting
fun.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
When requesting frequency changes or querying status from the Punit, we
need to use an opcode that corresponds to the frequency, taking into
account the memory frequency.
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Acked-by: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Add sprite_name() macro which should be used with the kind of sprites
that are fixed to pipes (gen4.5+).
Also use dev_priv->num_plane to calculate the sprite index insted
assuming two sprites per pipe. This should make it print the right
name.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Print the alphabetical name for transcoders. The code already used the
pipe_name() macro for transcoders, so I did the same. But we do have the
(unused) transcoder_name() macro which could be used instead.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Alway use the alphabetical names in debug/error messages for planes,
pipes and ports, instead of using decimal numbers occasionally.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Get rid of the few remaining open coded copies of
pipe_name() and port_name().
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
When adding the pipe config computation step I've accidentally moved
this a bit away. Which momentarily confused me since the pipe config
step rejected some modesetting operations I expected and so left me
looking in vain for that debug output.
v2: Move the debug output into the right function to prevent this from
happening again.
v3: Make it compile (Ville). Also reorder the patch so that the two
bugfixes are first.
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
We can only enable the pfit if the pipe is disabled. Ensure that this
is obeyed with a neat assert.
Also check whether the pfit is off before enabling it - if not we've
lost track of things somewhere since the pfit is only ever used by the
lvds output.
v2: Fix spell fail in the commit message pointed out by Ville&Jani.
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
The i9xx modeset sequence is currently pretty fishy, so tight it all
up with some good assert-sprinkling.
We already have good coverage on the disable side, but the enable side
is spotty (since until recently it was wrong).
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Just blows through 50ms for naught, since the pipe is off.
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This is horrible lore and we should be able to get rid of it now
that the lvds/pfit handling code actually does the right thing.
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Oops.
This regression has been introduced in
commit 5d2d38ddca
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date: Wed Mar 27 00:45:01 2013 +0100
drm/i915: clean up pipe bpp confusion
Reported-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
For a bunch of reason we need to more accurately track this:
- hw pipe state readout for Haswell needs the cpu transcoder.
- We need to know the right cpu transcoder in a bunch of places in
->disable and other modeset callbacks.
In the future we need to add hw state readout&check support, too. But
to avoid ugly merge conflicts do the rote sed job now without any
functional changes.
v2: Preserve the cpu_transcoder value when overwriting crtc->config.
Reported by Paulo.
Cc: Paulo Zanoni <przanoni@gmail.com>
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> (v1)
[danvet: Removed rough whitespace that Chris spotted.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Bits 30 and 24:0 are PBC, so don't zero them. Some of the other bits
are being zeroed, but I couldn't find a reason for this, so leave them
as they are for now to avoid regressions.
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Imre Deak <imre.deak@intel.com>
[danvet: Delete the redudant #define that Imre spotted in his review.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Check the VBT to see if the machine has inverted FDI RX polarity on
CPT. Based on this bit, set the appropriate bit on the TRANS_CHICKEN2
registers.
This should fix some machines that were showing black screens on all
outputs.
Cc: stable@vger.kernel.org
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=60029
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
We disable hoptplug detection when we encounter a hotplug event
storm. Still hotplug detection is required on some outputs (like
Display Port). The interrupt storm may be only temporary (on certain
Dell Laptops for instance it happens at certain charging states of
the system). Thus we enable it after a certain grace period (2 minutes).
Should the interrupt storm persist it will be detected immediately
and it will be disabled again.
v2: Reordered drm_i915_private: moved hotplug_reenable_timer to hpd state tracker.
v3: Clarified loop start value,
Removed superfluous test for Ivybridge and Haswell,
Restructured loop to avoid deep nesting (all suggested by Ville Syrjälä)
v4: Fixed two bugs pointed out by Jani Nikula.
Signed-off-by: Egbert Eich <eich@suse.de>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This patch disables hotplug interrupts if an 'interrupt storm'
has been detected.
Noise on the interrupt line renders the hotplug interrupt useless:
each hotplug event causes the devices to be rescanned which will
will only increase the system load.
Thus disable the hotplug interrupts and fall back to periodic
device polling.
v2: Fixed cleanup typo.
v3: Fixed format issues, clarified a variable name,
changed pr_warn() to DRM_INFO() as suggested by
Jani Nikula <jani.nikula@linux.intel.com>.
Signed-off-by: Egbert Eich <eich@suse.de>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
To disable previously enabled HPD IRQs we need to reset them and
set the enabled ones individually.
Signed-off-by: Egbert Eich <eich@suse.de>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
When an encoder is shared on several connectors there is only
one hotplug line, thus this line needs to be shared among these
connectors.
If HPD detect only works reliably on a subset of those connectors,
we want to poll the others. Thus we need to make sure that storm
detection doesn't mess up the settings for those connectors.
Therefore we store the settings in the intel_connector struct and
restore them from there.
If nothing is set but the encoder has a hpd_pin set we assume this
connector is hotplug capable.
On init/reset we make sure the polled state of the connectors
is (re)set to the default value, the HPD interrupts are marked
enabled.
Signed-off-by: Egbert Eich <eich@suse.de>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Add a hotplug IRQ storm detection (triggered when a hotplug interrupt
fires more than 5 times / sec).
Rationale:
Despite of the many attempts to fix the problem with noisy hotplug
interrupt lines we are still seeing systems which have issues:
Once cause of noise seems to be bad routing of the hotplug line
on the board: cross talk from other signals seems to cause erronous
hotplug interrupts. This has been documented as an erratum for the
the i945GM chipset and thus hotplug support was disabled for this
chipset model but others seem to have this problem, too.
We have seen this issue on a G35 motherboard for example:
Even different motherboards of the same model seem to behave
differently: while some only see only around 10-100 interrupts/s
others seem to see 5k or more.
We've also observed a dependency on the selected video mode.
Also on certain laptops interrupt noise seems to occur duing
battery charging when the battery is at a certain charge levels.
Thus we add a simple algorithm here that detects an 'interrupt storm'
condition.
v2: Fixed comment.
v3: Reordered drm_i915_private: moved hpd state tracking to hotplug work stuff.
v4: Followed by Jesse Barnes to use a time_..() macro.
v5: Fixed coding style as suggested by Jani Nikula.
Signed-off-by: Egbert Eich <eich@suse.de>
Acked-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
We may have DDI_BUF_CTL(PORT_A) configured with 2 lanes and still not
have CRT, so just check for !IS_ULT. This problem happened on a real
machine and resulted in a very ugly dmesg.
Cc: stable@vger.kernel.org
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
We have the exact same comment inside intel_init_display. This is
a leftover from when we moved a lot of code from intel_display.c to
intel_pm.c.
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Caused by me with v2 of
commit 219f4fdbed
Author: Ben Widawsky <ben@bwidawsk.net>
Date: Fri Mar 15 11:17:54 2013 -0700
drm/i915: Introduce GEN7_FEATURES for device info
I don't have a VLV to test it with, Jesse, Ken, can one of you test?
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Cc: Kenneth Graunke <kenneth@whitecape.org>
Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Haswell introduces a separate frequency domain for the ring (uncore). So
where we used to increase the CPU (IA) clock with GPU busyness, we now
need to scale the ring frequency directly instead. As the ring limits
our memory bandwidth, it is vital for performance that when the GPU is
busy, we increase the frequency of the ring to increase the available
memory bandwidth.
v2: Fix the algorithm to actually use the scaled gpu frequency for the ring.
v3: s/max_ring_freq/min_ring_freq/ as that is what it is
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
[danvet: Add space checkpatch complained about.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
commit 647416f9ee
Author: Kees Cook <keescook@chromium.org>
Date: Sun Mar 10 14:10:06 2013 -0700
drm/i915: use simple attribute in debugfs routines
made i915_next_seqno debugfs entry to crop it's output
if returned value was large enough. Using simple_attr
will limit the output to 24 bytes.
Fix is to strip out preamples on all simple attributes
that have one.
v2: Fix all simple attributes (Daniel Vetter)
Cc: Kees Cook <keescook@chromium.org>
Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
Acked-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
The recent rework of the pfit handling didn't take into account that
the panel fitter is fixed to pipe B:
commit 24a1f16de9
Author: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Date: Fri Feb 8 16:35:37 2013 +0200
drm/i915: disable shared panel fitter for pipe
Fix this up by properly computing the pipe the pfit is on. Also
extract the logic into its own function, add a debug assert to check
that the pipe is off (mostly just documentation) and add some debug
output.
If pipe A was disabled after pipe B was set up, the panel fitter will
be disabled. Now most userspace doesn't do modesets in this order,
which is why I couldn't ever reproduce this and why it took me so long
to figure out.
We really need hw state readout and check support for the pannel
fitter ...
Reported-by: Hans de Bruin <jmdebruin@xmsnet.nl>
Cc: Mika Kuoppala <mika.kuoppala@intel.com>
Cc: Hans de Bruin <jmdebruin@xmsnet.nl>
References: http://permalink.gmane.org/gmane.comp.freedesktop.xorg.drivers.intel/19049
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Yet again our current confusion between doing the modeset globally,
but only having the new parameters for one crtc at a time.
So that intel_set_mode essentially already does a global modeset:
intel_modeset_affected_pipes compares the current state with where we
want to go to (which is carefully set up by intel_crtc_set_config) and
then goes through the modeset sequence for any crtc which needs
updating.
Now the issue is that the actual interface with the remaining code
still only works on one crtc, and so we only pass in one fb and one
mode. In intel_set_mode we also only compute one intel_crtc_config
(which should be the one for the crtc we're doing a modeset on).
The reason for that mismatch is twofold:
- We want to eventually do all modeset as global state changes, so
it's just infrastructure prep.
- But even the old semantics can change more than one crtc when you
e.g. move a connector from crtc A to crtc B, then both crtc A and B
need to be updated. Usually that means one pipe is disabled and the
other enabled. This is also the reason why the hack doesn't touch the
disable_pipes mask.
Now hilarity ensued in our kms config restore paths when we actually
try to do a modeset on all crtcs: If the first crtc should be off and
the second should be on, then the call on the first crtc will notice
that the 2nd one should be switched on and so tries to compute the
pipe_config. But due to a lack of passed-in fb (crtc 1 should be off
after all) it only results in tears.
This case is ridiculously easy to hit on gen2/3 where the lvds output
is restricted to pipe B. Note that before the pipe_config bpp rework
gen2/3 didn't care really about the fb->depth, so this is a regression
brought to light with
commit 4e53c2e010
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date: Wed Mar 27 00:44:58 2013 +0100
drm/i915: precompute pipe bpp before touching the hw
But apparently Ajax also managed to blow up pch platforms, probably
with some randomized configs, and pch platforms trip up over the lack
of an fb even in the old code. So this actually goes back to the first
introduction of the new modeset restore code in
commit 45e2b5f640
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date: Fri Nov 23 18:16:34 2012 +0100
drm/i915: force restore on lid open
Fix this mess by now by justing shunting all the cool new global
modeset logic in intel_modeset_affected_pipes.
v2: Improve commit message and clean up all the comments in
intel_modeset_affected_pipes - since the introduction of the modeset
restore code they've been a bit outdated.
Bugzill: https://bugzilla.redhat.com/show_bug.cgi?id=917725
Cc: stable@vger.kernel.org
References: http://www.mail-archive.com/stable@vger.kernel.org/msg38084.html
Tested-by: Richard Cochran <richardcochran@gmail.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Backlight cleanup in the eDP connector destroy callback caused the
backlight device to be removed on some systems that first initialized LVDS
and then attempted to initialize eDP. Prevent multiple backlight
initializations, and ensure backlight cleanup is only done once by moving
it to modeset cleanup.
A small wrinkle is the introduced asymmetry in backlight
setup/cleanup. This could be solved by adding refcounting, but it seems
overkill considering that there should only ever be one backlight device.
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=55701
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Tested-by: Peter Verthez <peter.verthez@skynet.be>
Cc: stable@vger.kernel.org
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This solves some "unclaimed register" messages when booting the
machine with eDP attached.
V2: Rebase and add the comment requested by Daniel.
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
It returns true if we've requested to turn the power well on and it's
really on. It also returns true for all the previous gens.
For now there's just one caller, but I'm going to add more.
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
It will be only consistent once we've restored all the crtcs. Since a
bunch of other callers also want to just restore a single crtc, add a
boolean to disable checking only where it doesn't make sense.
Note that intel_modeset_setup_hw_state already has a call to
intel_modeset_check_state at the end, so we don't reduce the amount of
checking.
v2: Try harder not to create a big patch (Chris).
v3: Even smaller (still Chris). Also fix a trailing space.
References: https://lkml.org/lkml/2013/3/16/60
Cc: Tomas Melin <tomas.melin@iki.fi>
Cc: Richard Cochran <richardcochran@gmail.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: stable@vger.kernel.org
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Tested-by: Tomas Melin <tomas.melin@iki.fi>
Tested-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Increase the number of fence registers to 32 on IVB/HSW. VLV however
only has 16 fence registers according to the docs.
Increasing the number of fences was attempted before [1], but there was
some uncertainty about the maximum CPU fence number for FBC. Since then
BSpec has been updated to state that there are in fact 32 fence registers,
and the CPU fence number field in the SNB_DPFC_CTL_SA register is 5 bits,
and the CPU fence number field in the ILK_DPFC_CONTROL register must be
zero. So now it all makes sense.
[1] http://lists.freedesktop.org/archives/intel-gfx/2011-October/012865.html
v2: Include some background information based on the previous attempt
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
commit 4f9b2fe0441d4bdf5666a306156b5d6755de2584
Author: Ben Widawsky <ben@bwidawsk.net>
Date: Fri Apr 5 14:29:22 2013 -0700
drm/i915: Better overclock support
changed the sysfs read semantics for 'gt_max_freq_mhz'. By
always returning overclock max instead of stored value.
Fix this by returning the stored value. Separate sysfs entry
should be considered for overclocking max freq.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=63415
Cc: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
Reviewed-by: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
BSpec contains several scattered notes which state that the maximum
fence stride was increased to 256KB on IVB.
Testing on real hardware agrees.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Our checks for an invalid fence stride forgot to guard against
zero stride on gen4+. Fix it.
v2: Avoid duplicated code (danvet)
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
IVB and HSW use different encodings for the PPGTT cacheability bits in
the GAM_ECOCHK register.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
According to BSpec GAC_ECO_BITS register exists on Gen7 platforms as
well. Configure it accordingly.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
GAC_ECO_BITS has a bit similar to GAM_ECOCHK's ECOCHK_SNB_BIT. Add
the define, and enable it on SNB.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Requested-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Most importantly this will allow users to set overclock frequencies in
sysfs. Previously the max was limited by the RP0 max as opposed to the
overclock max. This is useful if one wants to either limit the max
overclock frequency, or set the minimum frequency to be in the overclock
range. It also fixes an issue where if one sets the max frequency to be
below the overclock max, they wouldn't be able to set back the proper
overclock max.
In addition I've added a couple of other bits:
Show the overclock freq. as max in sysfs
Print the overclock max in debugfs.
Print a warning if the user sets the min frequency to be in the
overclock range.
In this patch I've decided to store the hw_max when we read it from the
pcode at init. The reason I do this is the pcode reads can fail, and are
slow.
v2: Report when user requested overclocked max (Daniel)
Remove when user sets min to overclock range (Daniel)
Reported-by: freezer from #intel-gfx on irc
Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com>
[danvet: Fixup the s/100MHz/50MHz/ confusion in an unrelated comment
that Mika spotted.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Workaround to avoid intermittent aux channel failures, per spec change.
v2: Don't mess with cpu dp aux divider (Paulo Zanoni)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
[danvet: Kill spurious tab spotted by Paulo.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
I'm really not happy that we have to support this, but this will be the
simplest way to handle cases where PPGTT init can fail, which I promise
will be coming in the future.
v2: Resolve conflicts due to patch series reordering.
Signed-off-by: Ben Widawsky <ben@bwidawsk.net> (v1)
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This will allow us to carry on if we've cleaned up the PPGTT. The usage
for this is coming up - it simplifies handling a failed PPGTT init.
Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
[danvet: Spill the secrets about failing ppgtt init.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Since we've already set up a nice vtable to abstract other PPGTT
functions, also abstract the actual register programming to enable
things.
This function will probably need to change a bit as we implement real
processes.
v2: Resolve conflicts due to patch series reordering.
Signed-off-by: Ben Widawsky <ben@bwidawsk.net> (v1)
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This rework will help if future platforms choose to be a bit different.
Should have no functional impact.
v2: Don't move around the vtable setup (Daniel)
v3: Squash in the disable-by-default patch.
Signed-off-by: Ben Widawsky <ben@bwidawsk.net> (v1)
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
It only works that way on GEN6 and GEN7. Let's not assume GENn will be
the same.
Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
The PPGTT scratch page is used for all gens, and doing it in the global
part of our PPGTT setup makes the code a bit nicer.
This was in a patch submitted earlier as part of the PPGTT cleanups.
Grumpy maintainer must have missed it, and I didn't yell when
appropriate. Apologies for everyone :-)
v2: Update commit message
Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
There used to be other fixes in this patch but they've slowly disappeared as
other parts have been fixed.
Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This will allow us to read/write registers in GTT init.
Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
[danvet: Fix up error handling. We really should look into devres for
this stuff ...]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
We can assume that the PTE layout, and size changes for future
generations. To avoid confusion with the existing GEN6 PTE typedef, give
it a GEN6_ prefix.
v2: Fixup checkpatch warning and bikeshed commit message slightly.
v3: Rebase on top of Imre's for_each_sg_pages rework.
v4: Fixup conflicts in patch series reordering.
Signed-off-by: Ben Widawsky <ben@bwidawsk.net> (v1)
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
All gen6+ parts so far have 1 BAR which holds both the register space
and the GTT PTEs. Up until now, that was a 4MB BAR with half allocated
to each.
I have a strong hunch (wink, nod, wink) that future gens will also keep
a similar 50-50 split though the sizes may change. To help this along
change the code to obey the rule of half the total size instead of a
hard-coded 2MB.
Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Enabling context support increases SwapBuffers latency by about 20%
(measured on an i7-3720qm). We can offset that loss slightly by enabling
faster caching for the contexts. As they are not backed by any
particular cache (such as the sampler or render caches) our only option
is to select the generic mid-level cache. This reduces the latency of
the swap by about 5%.
Oddly this effect can be observed running smokin-guns on IVB at
1280x1024:
Using BLT copies for swaps: 151.67 fps
Using Render copies for swaps (unpatched): 141.70 fps
With contexts disabled: 150.23 fps
With contexts in L3$: 150.77 fps
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Ben Widawsky <ben@bwidawsk.net>
Cc: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Bspec has been been updated and dropped these two changes for non-sdv
LPT PCHs.
Cc: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
In order to fully serialize access to the fenced region and the update
to the fence register we need to take extreme measures on SNB+, and
manually flush writes to memory prior to writing the fence register in
conjunction with the memory barriers placed around the register write.
Fixes i-g-t/gem_fence_thrash
v2: Bring a bigger gun
v3: Switch the bigger gun for heavier bullets (Arjan van de Ven)
v4: Remove changes for working generations.
v5: Reduce to a per-cpu wbinvd() call prior to updating the fences.
v6: Rewrite comments to ellide forgotten history.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=62191
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Jon Bloomfield <jon.bloomfield@intel.com>
Tested-by: Jon Bloomfield <jon.bloomfield@intel.com> (v2)
Cc: stable@vger.kernel.org
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Userspace can easily hit this and does since Ville added a new evil
igt testcase in:
commit 069e35e0fc3785faa562adcfd2dd7bbed4cb1dea
Author: Ville Syrjälä <ville.syrjala@linux.intel.com>
Date: Mon Mar 4 15:34:06 2013 +0200
kms_flip: Add flip-vs-bad-tiling test
v2: Fix the spelling in the added comment (Chris).
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=63246
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
