openwrt/staging/blogic.git
9 years agodrm/i915: copy staged scaler state from drm state to crtc->config.
Chandra Konduru [Tue, 7 Apr 2015 22:28:44 +0000 (15:28 -0700)]
drm/i915: copy staged scaler state from drm state to crtc->config.

This is required for commit to perform as per staged assignment
of scalers until atomic crtc commit function is available.

As a place holder doing this copy from intel_atomic_commit for
scaling to operate correctly.

Signed-off-by: Chandra Konduru <chandra.konduru@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Ensure setting up scalers into staged crtc_state
Chandra Konduru [Tue, 7 Apr 2015 22:28:43 +0000 (15:28 -0700)]
drm/i915: Ensure setting up scalers into staged crtc_state

From intel_atomic_check, call intel_atomic_setup_scalers() to
assign scalers based on staged scaling requests. Fail the
transaction if setup returns error.

Setting up of scalers should be moved to atomic crtc check  once
atomic crtc is ready.

v2:
-updated parameter passing to setup_scalers (me)

Signed-off-by: Chandra Konduru <chandra.konduru@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: setup scalers for crtc_compute_config
Chandra Konduru [Thu, 9 Apr 2015 23:42:46 +0000 (16:42 -0700)]
drm/i915: setup scalers for crtc_compute_config

Added intel_atomic_setup_scalers to setup scalers based on
staged scaling requests from a crtc and its planes. If staged
requests are supportable, this function assigns scalers to
requested planes and crtc. Note that the scaler assignement
itself is staged into crtc_state and respective plane_states
for later commit after all checks have been done.

overall high level flow:
 - scaler requests are staged into crtc_state by planes/crtc
 - check whether staged scaling requests can be supported
 - add planes using scalers that aren't in current transaction
 - assign scalers to requested users
 - as part of plane commit, scalers will be committed
   (i.e., either attached or detached) to respective planes in hw
 - as part of crtc_commit, scaler will be either attached or detached
   to crtc in hw

crtc_compute_config calls intel_atomic_setup_scalers() to start
scaler assignments as per scaler state in crtc config. This call
should be moved to atomic crtc once it is available.

v2:
-removed a log message (me)
-changed input parameter to crtc_state (me)

v3:
-remove assigning plane_state returned by drm_atomic_get_plane_state (Matt)
-fail if there is an error from drm_atomic_get_plane_state (Matt)

v4:
-changes to align with updated scaler structure (Matt, me)

v5:
-added addtional checks before enabling HQ mode (me)
-added comments to enable HQ mode (Matt)

Signed-off-by: Chandra Konduru <chandra.konduru@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Preserve scaler state when clearing crtc_state
Chandra Konduru [Tue, 7 Apr 2015 22:28:41 +0000 (15:28 -0700)]
drm/i915: Preserve scaler state when clearing crtc_state

crtc_state is cleared during mode set which wipes out complete
scaler state too. This is causing issues. To fix, ensure scaler
state is preserved because it contains not only crtc
scaler usage, but also planes using scalers on this crtc.

Signed-off-by: Chandra Konduru <chandra.konduru@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Dump scaler_state too as part of dumping crtc_state
Chandra Konduru [Tue, 7 Apr 2015 22:28:40 +0000 (15:28 -0700)]
drm/i915: Dump scaler_state too as part of dumping crtc_state

Dumps scaler state as part of dumping crtc_state.

v2:
-use regular ints from plane_state->src (me)

v3:
-changes to align with updated scaler structures (Matt)
-interpret plane_state->src as 16.16 format (Matt, Daniel)

Signed-off-by: Chandra Konduru <chandra.konduru@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Keep sprite plane src rect in 16.16 format
Chandra Konduru [Thu, 9 Apr 2015 23:41:54 +0000 (16:41 -0700)]
drm/i915: Keep sprite plane src rect in 16.16 format

This patch keeps intel_plane_state->src rect back
into 16.16 format.

v2:
-sprite src rect to match primary format (Matt, Daniel)

v3:
-moved a hunk from #14 to keep src rect in check & commit in tandom (Matt)

Signed-off-by: Chandra Konduru <chandra.konduru@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Initialize skylake scalers
Chandra Konduru [Tue, 7 Apr 2015 22:28:38 +0000 (15:28 -0700)]
drm/i915: Initialize skylake scalers

Initializing scalers with supported values during crtc init.

v2:
-initialize single copy of min/max values (Matt)

v3:
-moved gen check to callsite (Matt)

v4:
-squashed planes begin with no scaler to here (me)

v5:
-updated init function with updated scaler state structure (Matt)

Signed-off-by: Chandra Konduru <chandra.konduru@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Initialize plane colorkey to NONE
Chandra Konduru [Tue, 7 Apr 2015 22:28:37 +0000 (15:28 -0700)]
drm/i915: Initialize plane colorkey to NONE

This patch initializes plane colorkey to NONE.

Signed-off-by: Chandra Konduru <chandra.konduru@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: skylake scaler structure definitions
Chandra Konduru [Tue, 7 Apr 2015 22:28:36 +0000 (15:28 -0700)]
drm/i915: skylake scaler structure definitions

skylake scaler structure definitions. scalers live in crtc_state as
they are pipe resources. They can be used either as plane scaler or
panel fitter.

scaler assigned to either plane (for plane scaling) or crtc (for panel
fitting) is saved in scaler_id in plane_state or crtc_state respectively.

scaler_id is used instead of scaler pointer in plane or crtc state
to avoid updating scaler pointer everytime a new crtc_state is created.

v2:
-made single copy of min/max values for scalers (Matt)

v3:
-updated commentary for scaler_id (me)

v4:
-converted src/dst ranges to #defines, dropped ratios (Matt)

Signed-off-by: Chandra Konduru <chandra.konduru@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Register definitions for skylake scalers
Chandra Konduru [Tue, 7 Apr 2015 22:28:35 +0000 (15:28 -0700)]
drm/i915: Register definitions for skylake scalers

Adding register definitions for skylake scalers.
v2:
-add #define for plane selection mask (me)

Signed-off-by: Chandra Konduru <chandra.konduru@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Disable Render power gating
Sagar Kamble [Sun, 12 Apr 2015 05:58:14 +0000 (11:28 +0530)]
drm/i915: Disable Render power gating

When RC6 along with Render power gating is enabled, GPU hang
happens due to lack of synchronization between GTI and Render
power gating.

v2: Updated commit message and WA name (Damien)

Change-Id: If1614206341eb52a21eadae8c5ebb2655029b50c
Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Sagar Kamble <sagar.a.kamble@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Allocate connector state together with the connectors
Ander Conselvan de Oliveira [Fri, 10 Apr 2015 07:59:10 +0000 (10:59 +0300)]
drm/i915: Allocate connector state together with the connectors

Connector states were being allocated in intel_setup_outputs() in loop
over all connectors. That meant hot-added connectors would have a NULL
state. Since the change to use a struct drm_atomic_state for the legacy
modeset, connector states are necessary for the i915 driver to function
properly, so that would lead to oopses.

v2: Fix test for intel_connector_init() success in lvds and sdvo (PRTS)

Signed-off-by: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com>
Reported-and-tested-by: Nicolas Kalkhof <nkalkhof@web.de>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Remove unused variable from execlists_context_queue
Michel Thierry [Fri, 10 Apr 2015 10:24:27 +0000 (11:24 +0100)]
drm/i915: Remove unused variable from execlists_context_queue

After commit d7b9ca2f7a41cd36f5ca6c220df48ca9294ed37a
("drm/i915: Remove request->uniq")

dev_priv is no longer needed.

Cc: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Michel Thierry <michel.thierry@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: fix build for DEBUG_FS=n
Jani Nikula [Fri, 10 Apr 2015 13:59:32 +0000 (16:59 +0300)]
drm/i915: fix build for DEBUG_FS=n

Fix DEBUG_FS=n build broken by

commit aa7471d228eb6dfddd0d201ea9746d6a2020972a
Author: Jani Nikula <jani.nikula@intel.com>
Date:   Wed Apr 1 11:15:21 2015 +0300

    drm/i915: add i915 specific connector debugfs file for DPCD

Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Move vm page allocation in proper place
Mika Kuoppala [Fri, 10 Apr 2015 12:54:58 +0000 (15:54 +0300)]
drm/i915: Move vm page allocation in proper place

Move to i915_vma_bind as it is part of the binding.

Suggested-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Michel Thierry <michel.thierry@intel.com>
Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915/skl: Support for 90/270 rotation
Sonika Jindal [Fri, 10 Apr 2015 09:07:29 +0000 (14:37 +0530)]
drm/i915/skl: Support for 90/270 rotation

v2: Moving creation of property in a function, checking for 90/270
rotation simultaneously (Chris)
Letting primary plane to be positioned
v3: Adding if/else for 90/270 and rest params programming, adding check for
pixel_format, some cleanup (review comments)
v4: Adding right pixel_formats, using src_* params instead of crtc_* for offset
and size programming (Ville)
v5: Rebased on -nightly and Tvrtko's series for gtt remapping.
v6: Rebased on -nightly (Tvrtko's series merged)
v7: Moving pixel_format check to intel_atomic_plane_check (Matt)

Signed-off-by: Sonika Jindal <sonika.jindal@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915/skl: Allow universal planes to position
Sonika Jindal [Fri, 10 Apr 2015 09:07:28 +0000 (14:37 +0530)]
drm/i915/skl: Allow universal planes to position

Signed-off-by: Sonika Jindal <sonika.jindal@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Naming constants to be written to GEN9_PG_ENABLE
Sagar Kamble [Fri, 10 Apr 2015 08:41:29 +0000 (14:11 +0530)]
drm/i915: Naming constants to be written to GEN9_PG_ENABLE

Change-Id: I4253459c075c50d9b6f034b4ed4ad2f54cd7d1d7
Signed-off-by: Sagar Kamble <sagar.a.kamble@intel.com>
Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Remove stale comment from __intel_set_mode()
Ander Conselvan de Oliveira [Fri, 10 Apr 2015 08:38:31 +0000 (11:38 +0300)]
drm/i915: Remove stale comment from __intel_set_mode()

Since the following commit, the PLL calculations are done earlier, so
the code following the comment doesn't do anything PLL or encoder
related. It only updates the primary plane now.

commit f3019a4d92f08b2dd92443a4b567a066a51c6ec0
Author: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com>
Date:   Wed Oct 29 11:32:37 2014 +0200

    drm/i915: Remove crtc_mode_set() hook

Signed-off-by: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Simplify object is-pinned checking for shrinker
Chris Wilson [Tue, 7 Apr 2015 16:28:17 +0000 (17:28 +0100)]
drm/i915: Simplify object is-pinned checking for shrinker

When looking for viable candidates to shrink, we only want objects that
are not pinned. However to do so we performed a double iteration over
the vma in the objects, first looking for the pin-count, then looking
for allocations. We can do both at once and be slightly more explicit in
our validity test.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Allocate context objects from stolen
Chris Wilson [Tue, 7 Apr 2015 15:21:11 +0000 (16:21 +0100)]
drm/i915: Allocate context objects from stolen

As we never expose context objects directly to userspace, we can forgo
allocating a first-class GEM object for them and prefer to use the
limited resource of reserved/stolen memory for them. Note this means
that their initial contents are undefined.

However, a downside of using stolen objects for execlists is that we
cannot access the physical address directly (thanks MCH!) which prevents
their use.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Remove request->uniq
Chris Wilson [Tue, 7 Apr 2015 15:21:09 +0000 (16:21 +0100)]
drm/i915: Remove request->uniq

We already assign a unique identifier to every request: seqno. That
someone felt like adding a second one without even mentioning why and
tweaking ABI smells very fishy.

Fixes regression from
commit b3a38998f042b862f5ba4d7f2268f3a8dfb4883a
Author: Nick Hoath <nicholas.hoath@intel.com>
Date:   Thu Feb 19 16:30:47 2015 +0000

    drm/i915: Fix a use after free, and unbalanced refcounting

v2: Rebase

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Nick Hoath <nicholas.hoath@intel.com>
Cc: Thomas Daniel <thomas.daniel@intel.com>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: Jani Nikula <jani.nikula@intel.com>
[danvet: Fixup because different merge order.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Prefer to check for idleness in worker rather than sync-flush
Chris Wilson [Tue, 7 Apr 2015 15:21:08 +0000 (16:21 +0100)]
drm/i915: Prefer to check for idleness in worker rather than sync-flush

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Tidy gen8 IRQ handler
Chris Wilson [Tue, 7 Apr 2015 15:21:05 +0000 (16:21 +0100)]
drm/i915: Tidy gen8 IRQ handler

Remove some needless variables and parameter passing.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Reduce locking in gen8 IRQ handler
Chris Wilson [Tue, 7 Apr 2015 15:21:04 +0000 (16:21 +0100)]
drm/i915: Reduce locking in gen8 IRQ handler

Similar in vain in reducing the number of unrequired spinlocks used for
execlist command submission (where the forcewake is required but
manually controlled), we know that the IRQ registers are outside of the
powerwell and so we can access them directly. Since we now have direct
access exported via I915_READ_FW/I915_WRITE_FW, lets put those to use in
the irq handlers as well.

In the process, reorder the execlist submission to happen as early as
possible.

v2: Restrict the untraced register mmio to just the GT path (i.e. the
hotpath for execlists)

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Reduce locking in execlist command submission
Chris Wilson [Tue, 7 Apr 2015 15:21:02 +0000 (16:21 +0100)]
drm/i915: Reduce locking in execlist command submission

This eliminates six needless spin lock/unlock pairs when writing out
ELSP.

v2: Respin with my preferred colour.
v3: Mostly back to the original colour

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com> [v1]
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Remove unused variable in intel_lrc.c
Daniel Vetter [Fri, 10 Apr 2015 08:18:47 +0000 (10:18 +0200)]
drm/i915: Remove unused variable in intel_lrc.c

Already tagged this one and 0-day builder is failing me.

Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
9 years agodrm/i915: Use a separate slab for vmas
Chris Wilson [Tue, 7 Apr 2015 15:20:58 +0000 (16:20 +0100)]
drm/i915: Use a separate slab for vmas

vma are more frequently allocated than objects and so should equally
benefit from having a dedicated slab.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Use a separate slab for requests
Chris Wilson [Tue, 7 Apr 2015 15:20:57 +0000 (16:20 +0100)]
drm/i915: Use a separate slab for requests

requests are even more frequently allocated than objects and equally
benefit from having a dedicated slab.

v2: Rebase

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Clear crtc atomic flags at beginning of transaction
Matt Roper [Thu, 9 Apr 2015 17:48:38 +0000 (10:48 -0700)]
drm/i915: Clear crtc atomic flags at beginning of transaction

Once we have full atomic modeset, these kind of flags should be in a
real intel_crtc_state that's tracked properly.  In the meantime, make
sure we clear out any old flags at the beginning of a transaction so
that we don't wind up seeing leftover flags from old transactions that
were checked, but never went to the commit step.  At the moment, a
failed check or prepare could leave stale flags behind that interfere
with the next atomic transaction.

v2: Just do a memset; the series this patch was originally part of
    placed additional fields into the structure that shouldn't be
    cleared, but that's no longer the case.

Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Switch to full atomic helpers for plane updates/disable, take two
Matt Roper [Thu, 9 Apr 2015 01:56:53 +0000 (18:56 -0700)]
drm/i915: Switch to full atomic helpers for plane updates/disable, take two

Switch from our plane update/disable entrypoints to use the full atomic
helpers (which generate a top-level atomic transaction) rather than the
transitional helpers (which only create/manipulate orphaned plane states
independent of a top-level transaction).  Various upcoming work (SKL
scalers, atomic watermarks, etc.) requires a full atomic transaction to
behave properly/cleanly.

Last time we tried this, we had to back out the change because we still
call the drm_plane vfuncs directly from within our legacy modesetting
code.  This potentially results in nested atomic transactions, locking
collisions, and other failures.  To avoid that problem again, we
sidestep the issue by calling the transitional helpers directly (rather
than through a vfunc) when we're nested inside of other legacy
modesetting code.  However this does allow legacy SetPlane() ioctl's to
process an entire drm_atomic_state transaction, which is important for
upcoming patches.

Cc: Chandra Konduru <chandra.konduru@intel.com>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Update DRIVER_DATE to 20150410
Daniel Vetter [Fri, 10 Apr 2015 07:31:40 +0000 (09:31 +0200)]
drm/i915: Update DRIVER_DATE to 20150410

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm: Adding drm helper function drm_plane_from_index().
Chandra Konduru [Fri, 10 Apr 2015 00:36:21 +0000 (17:36 -0700)]
drm: Adding drm helper function drm_plane_from_index().

Adding drm helper function to return plane pointer from index where
index is a returned by drm_plane_index.

v2:
-avoided nested loop by adding loop count (Daniel)

v3:
-updated patch header prefix to 'drm' (Matt)

v4:
-fixed a kerneldoc issue (kbuild-internal)

Cc: dri-devel@lists.freedesktop.org
Signed-off-by: Chandra Konduru <chandra.konduru@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Acked-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Remove vestigal DRI1 ring quiescing code
Chris Wilson [Tue, 7 Apr 2015 15:20:51 +0000 (16:20 +0100)]
drm/i915: Remove vestigal DRI1 ring quiescing code

After the removal of DRI1, all access to the rings are through requests
and so we can always be sure that there is a request to wait upon to
free up available space. The fallback code only existed so that we could
quiesce the GPU following unmediated access by DRI1.

v2: Rebase

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Use the global runtime-pm wakelock for a busy GPU for execlists
Chris Wilson [Tue, 7 Apr 2015 15:20:49 +0000 (16:20 +0100)]
drm/i915: Use the global runtime-pm wakelock for a busy GPU for execlists

When we submit a request to the GPU, we first take the rpm wakelock, and
only release it once the GPU has been idle for a small period of time
after all requests have been complete. This means that we are sure no
new interrupt can arrive whilst we do not hold the rpm wakelock and so
can drop the individual get/put around every single request inside
execlists.

Note: to close one potential issue we should mark the GPU as busy
earlier in __i915_add_request.

To elaborate: The issue is that we emit the irq signalling sequence
before we grab the rpm reference, which means we could miss the
resulting interrupt (since that's not set up when suspended). The only
bad side effect is a missed interrupt, gt mmio writes automatically
wake up the hw itself. But otoh we have an umbrella rpm reference for
the entirety of execbuf, as long as that's there we're covered.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
[danvet: Explain a bit more about the add_request issue, which after
some irc chatting with Chris turns out to not be an issue really.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Use simpler form of spin_lock_irq(execlist_lock)
Chris Wilson [Tue, 7 Apr 2015 15:20:48 +0000 (16:20 +0100)]
drm/i915: Use simpler form of spin_lock_irq(execlist_lock)

We can use the simpler spinlock form to disable interrupts as we are
always outside of an irq/softirq handler.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Fix the VBT child device parsing for BSW
Ville Syrjälä [Wed, 25 Mar 2015 16:45:58 +0000 (18:45 +0200)]
drm/i915: Fix the VBT child device parsing for BSW

Recent BSW VBT has a VBT child device size 37 bytes instead of the 33
bytes our code assumes. This means we fail to parse the VBT and thus
fail to detect eDP ports properly and just register them as DP ports
instead.

Fix it up by using the reported child device size from the VBT instead
of assuming it matches out struct defintions.

The latest spec I have shows that the child device size should be 36
bytes for rev >= 195, however on my BSW the size is actually 37 bytes.
And our current struct definition is 33 bytes.

Feels like the entire VBT parses would need to be rewritten to handle
changes in the layout better, but for now I've decided to do just the
bare minimum to get my eDP port back.

Cc: Vijay Purushothaman <vijay.a.purushothaman@linux.intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Use complete address space in true PPGTT
Michel Thierry [Wed, 8 Apr 2015 11:13:35 +0000 (12:13 +0100)]
drm/i915: Use complete address space in true PPGTT

True PPGTT is capable of having a full address space, even if the system
has less allocated memory.

Note that aliasing PPGTT always aliases the GGTT and thus should remain
of the same size.

Signed-off-by: Michel Thierry <michel.thierry@intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915/gen8: Dynamic page table allocations
Michel Thierry [Wed, 8 Apr 2015 11:13:34 +0000 (12:13 +0100)]
drm/i915/gen8: Dynamic page table allocations

This finishes off the dynamic page tables allocations, in the legacy 3
level style that already exists. Most everything has already been setup
to this point, the patch finishes off the enabling by setting the
appropriate function pointers.

In LRC mode, contexts need to know the PDPs when they are populated. With
dynamic page table allocations, these PDPs may not exist yet. Check if
PDPs have been allocated and use the scratch page if they do not exist yet.

Before submission, update the PDPs in the logic ring context as PDPs
have been allocated.

v2: Update aliasing/true ppgtt allocate/teardown/clear functions for
gen 6 & 7.

v3: Rebase.

v4: Remove BUG() from ppgtt_unbind_vma, but keep checking that either
teardown_va_range or clear_range functions exist (Daniel).

v5: Similar to gen6, in init, gen8_ppgtt_clear_range call is only needed
for aliasing ppgtt. Zombie tracking was originally added for teardown
function and is no longer required.

v6: Update err_out case in gen8_alloc_va_range (missed from lastest
rebase).

v7: Rebase after s/page_tables/page_table/.

v8: Updated scratch_pt check after scratch flag was removed in previous
patch.

v9: Note that lrc mode needs to be updated to support init state without
any PDP.

v10: Unmap correct page_table in gen8_alloc_va_range's error case,  clean-up
gen8_aliasing_ppgtt_init (remove duplicated map), and initialize PTs
during page table allocation.

v11: Squashed LRC enabling commit, otherwise LRC mode would be left broken
until it was updated to handle the init case without any PDP.

v12: Do not overallocate new_pts bitmap, make alloc_gen8_temp_bitmaps
static and don't abuse of inline functions. (Mika)

Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Michel Thierry <michel.thierry@intel.com> (v2+)
Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915/gen8: begin bitmap tracking
Michel Thierry [Wed, 8 Apr 2015 11:13:33 +0000 (12:13 +0100)]
drm/i915/gen8: begin bitmap tracking

Like with gen6/7, we can enable bitmap tracking with all the
preallocations to make sure things actually don't blow up.

v2: Rebased to match changes from previous patches.
v3: Without teardown logic, rely on used_pdpes and used_pdes when
freeing page tables.
v4: Rebased after s/page_tables/page_table/.
v5: Rebased after page table generalizations.

Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Michel Thierry <michel.thierry@intel.com> (v2+)
Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915/gen8: Split out mappings
Michel Thierry [Wed, 8 Apr 2015 11:13:32 +0000 (12:13 +0100)]
drm/i915/gen8: Split out mappings

When we do dynamic page table allocations for gen8, we'll need to have
more control over how and when we map page tables, similar to gen6.
In particular, DMA mappings for page directories/tables occur at allocation
time.

This patch adds the functionality and calls it at init, which should
have no functional change.

The PDPEs are still a special case for now. We'll need a function for
that in the future as well.

v2: Handle renamed unmap_and_free_page functions.
v3: Updated after teardown_va logic was removed.
v4: Rebase after s/page_tables/page_table/.
v5: No longer allocate all PDPs in GEN8+ systems with less than 4GB of
memory, and update populate_lr_context to handle this new case (proper
tracking will be added later in the patch series).
v6: Assign lrc page directory pointer addresses using a macro. (Mika)

Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Michel Thierry <michel.thierry@intel.com> (v2+)
Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Extract PPGTT param from page_directory alloc
Michel Thierry [Wed, 8 Apr 2015 11:13:31 +0000 (12:13 +0100)]
drm/i915: Extract PPGTT param from page_directory alloc

This will be useful for when we move to 48b addressing, and the PDP isn't
the root of the page table structure.

v2: Rebase after changes for Gen8+ systems with less than 4GB of memory.
v3: Rebase after Mika's code review.

Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Michel Thierry <michel.thierry@intel.com> (v2)
Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: num_pd_pages/num_pd_entries isn't useful
Michel Thierry [Wed, 8 Apr 2015 11:13:30 +0000 (12:13 +0100)]
drm/i915: num_pd_pages/num_pd_entries isn't useful

These values are never quite useful for dynamic allocations of the page
tables. Getting rid of them will help prevent later confusion.

v2: Updated to use unmap_and_free_pd functions.
v3: Updated gen8_ppgtt_free after teardown logic was removed.
v4: Rebase after s/page_tables/page_table/.
v5: Keep allocating all page directories in GEN8+ systems with less
than 4GB of memory. Updated gen6_for_all_pdes.
v6: Prevent (harmless) out of range access in gen6_for_all_pdes.

Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Michel Thierry <michel.thierry@intel.com> (v2+)
Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915/gen8: Update pdp switch and point unused PDPs to scratch page
Michel Thierry [Wed, 8 Apr 2015 11:13:29 +0000 (12:13 +0100)]
drm/i915/gen8: Update pdp switch and point unused PDPs to scratch page

One important part of this patch is we now write a scratch page
directory into any unused PDP descriptors. This matters for 2 reasons,
first, we're not allowed to just use 0, or an invalid pointer, and second,
we must wipe out any previous contents from the last context.

The latter point only matters with full PPGTT. The former point only
effect platforms with less than 4GB memory.

v2: Updated commit message to point that we must set unused PDPs to the
scratch page.

v3: Unmap scratch_pd in gen8_ppgtt_free.

v4: Initialize scratch_pd. (Mika)

Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Michel Thierry <michel.thierry@intel.com> (v2+)
Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915/gen8: pagetable allocation rework
Michel Thierry [Wed, 8 Apr 2015 11:13:28 +0000 (12:13 +0100)]
drm/i915/gen8: pagetable allocation rework

Start using gen8_for_each_pde macro to allocate page tables.

v2: teardown_va_range references removed.
v3: Rebase after s/page_tables/page_table/.
v4: Keep setting up page tables for all page directories in systems with
less than 4GB of memory.
v5: Also initialize the page tables. (Mika)
v6: Initialize all page tables, including the extra ones from systems
with less than 4GB of memory. (Mika)

Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Michel Thierry <michel.thierry@intel.com> (v2+)
Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915/gen8: page directories rework allocation
Michel Thierry [Wed, 8 Apr 2015 11:13:27 +0000 (12:13 +0100)]
drm/i915/gen8: page directories rework allocation

Start using gen8_for_each_pdpe macro to allocate the page directories.

Similar to PTs, while setting up a page directory, make all entries of
the  pd point to the scratch pd before mapping (and make all its entries
point to the scratch page); this is to be safe in case of out of bound
access or  proactive prefetch. Systems without LLC require an explicit
flush.

v2: Rebased after s/free_pt_*/unmap_and_free_pt/ change.
v3: Rebased after teardown va range logic was removed.
v4: Keep setting up all page directories for systems with less than 4GB
of memory.
v5: Initialize PDs. (Mika)
v6: Initialize also the extra PDs from systems with less than 4GB of
memory. (Mika)

Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Michel Thierry <michel.thierry@intel.com> (v2+)
Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915/gen8: Add dynamic allocation macros and helper functions
Michel Thierry [Wed, 8 Apr 2015 11:13:26 +0000 (12:13 +0100)]
drm/i915/gen8: Add dynamic allocation macros and helper functions

Similar to gen6, we will use for_each_pde/for_each_pdpe
and pte/pde/pdpe_index to iterate over these new structures.

v2: Match trace_i915_va_teardown params
v3: Multiple rebases.
v4: Updated to use unmap_and_free_pt.
v5: teardown_va_range logic no longer needed.
v6: Rebase after s/page_tables/page_table/.
v7: Renamed commit to match what it does now (it was "Use dynamic
allocation idioms on free").
v8: Prevent (harmless) out of range access in gen8_for_each_pde and
gen8_for_each_pdpe_e.

Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Michel Thierry <michel.thierry@intel.com> (v2+)
Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com>
[danvet: s/BUG/WARN/]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915/gen8: Initialize page tables
Michel Thierry [Wed, 8 Apr 2015 11:13:25 +0000 (12:13 +0100)]
drm/i915/gen8: Initialize page tables

Similar to gen6, while setting up a page table, make all entries of the
pt point to the scratch page before mapping; this is to be safe in case
of out of bound access or proactive prefetch.

Systems without LLC require an explicit flush.

v2: Expanded commit text and fixed indentation (Mika)

Signed-off-by: Michel Thierry <michel.thierry@intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Remove unnecessary gen8_ppgtt_unmap_pages
Michel Thierry [Wed, 8 Apr 2015 11:13:24 +0000 (12:13 +0100)]
drm/i915: Remove unnecessary gen8_ppgtt_unmap_pages

We are already unmapping them in gen8_ppgtt_free. This function became
redundant since commit 06fda602dbca9c59d87db7da71192e4b54c9f5ff
("drm/i915: Create page table allocators").

Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Signed-off-by: Michel Thierry <michel.thierry@intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Remove _entry from PPGTT page structures
Michel Thierry [Wed, 8 Apr 2015 11:13:23 +0000 (12:13 +0100)]
drm/i915: Remove _entry from PPGTT page structures

Lets try to keep this consistent:

Page Directory Pointer (PDP).
Page Directory (PD), also known as page directory pointer entries.
Page Table (PT), also known as page directory entries.

s/struct i915_page_table_entry/struct i915_page_table/
s/struct i915_page_directory_entry/struct i915_page_directory/
s/struct i915_page_directory_pointer_entry/struct
i915_page_directory_pointer/

Suggested-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Signed-off-by: Michel Thierry <michel.thierry@intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Record ring->start address in error state
Chris Wilson [Tue, 7 Apr 2015 15:20:47 +0000 (16:20 +0100)]
drm/i915: Record ring->start address in error state

This is mostly useful for execlists where the rings switch between
contexts (and so checking that the ring's start register matches the
context is important).

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Suppress empty lines from debugfs/i915_gem_objects
Chris Wilson [Tue, 7 Apr 2015 15:20:40 +0000 (16:20 +0100)]
drm/i915: Suppress empty lines from debugfs/i915_gem_objects

This is just so that I don't have to read about the batch pool on
systems that are not using it! Rather than using a newline between the
kernel clients and userspace clients, just distinguish the internal
allocations with a '[k]'

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Include active flag when describing objects in debugfs
Chris Wilson [Tue, 7 Apr 2015 15:20:39 +0000 (16:20 +0100)]
drm/i915: Include active flag when describing objects in debugfs

Since we use obj->active as a hint in many places throughout the code,
knowing its state in debugfs is extremely useful.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Split batch pool into size buckets
Chris Wilson [Tue, 7 Apr 2015 15:20:38 +0000 (16:20 +0100)]
drm/i915: Split batch pool into size buckets

Now with the trimmed memcpy before the command parser, we try to
allocate many different sizes of batches, predominantly one or two
pages. We can therefore speed up searching for a good sized batch by
keeping the objects of buckets of roughly the same size.

v2: Add a comment about bucket sizes

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Free batch pool when idle
Chris Wilson [Tue, 7 Apr 2015 15:20:37 +0000 (16:20 +0100)]
drm/i915: Free batch pool when idle

At runtime, this helps ensure that the batch pools are kept trim and
fast. Then at suspend, this releases memory that we do not need to
restore. It also ties into the oom-notifier to ensure that we recover as
much kernel memory as possible during OOM.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Split the batch pool by engine
Chris Wilson [Tue, 7 Apr 2015 15:20:36 +0000 (16:20 +0100)]
drm/i915: Split the batch pool by engine

I woke up one morning and found 50k objects sitting in the batch pool
and every search seemed to iterate the entire list... Painting the
screen in oils would provide a more fluid display.

One issue with the current design is that we only check for retirements
on the current ring when preparing to submit a new batch. This means
that we can have thousands of "active" batches on another ring that we
have to walk over. The simplest way to avoid that is to split the pools
per ring and then our LRU execution ordering will also ensure that the
inactive buffers remain at the front.

v2: execlists still requires duplicate code.
v3: execlists requires more duplicate code

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Tidy batch pool logic
Chris Wilson [Tue, 7 Apr 2015 15:20:35 +0000 (16:20 +0100)]
drm/i915: Tidy batch pool logic

Move the madvise logic out of the execbuffer main path into the
relatively rare allocation path, making the execbuffer manipulation less
fragile.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Split i915_gem_batch_pool into its own header
Chris Wilson [Tue, 7 Apr 2015 15:20:34 +0000 (16:20 +0100)]
drm/i915: Split i915_gem_batch_pool into its own header

In the next patch, I want to use the structure elsewhere and so require
it defined earlier. Rather than move the definition to an earlier location
where it feels very odd, place it in its own header file.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Re-enable RPS wait-boosting for all engines
Chris Wilson [Tue, 7 Apr 2015 15:20:33 +0000 (16:20 +0100)]
drm/i915: Re-enable RPS wait-boosting for all engines

This reverts commit ec5cc0f9b019af95e4571a9fa162d94294c8d90b
Author: Chris Wilson <chris@chris-wilson.co.uk>
Date:   Thu Jun 12 10:28:55 2014 +0100

    drm/i915: Restrict GPU boost to the RCS engine

The premise that media/blitter workloads are not affected by boosting is
patently false with a trip through igt. The question that remains is
what exactly is going wrong with the media workload that prompted this?
Hopefully that would be fixed by the missing agressive downclocking, in
addition to the extra restrictions imposed on how frequent a process is
allowed to boost.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Deepak S <deepak.s@linux.intel.com>
Cc: Daniel Vetter <daniel.vetter@ffwll>
Acked-by: Deepak S <deepak.s@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Deminish contribution of wait-boosting from clients
Chris Wilson [Tue, 7 Apr 2015 15:20:32 +0000 (16:20 +0100)]
drm/i915: Deminish contribution of wait-boosting from clients

With boosting for missed pageflips, we have a much stronger indication
of when we need to (temporarily) boost GPU frequency to ensure smooth
delivery of frames. So now only allow each client to perform one RPS boost
in each period of GPU activity due to stalling on results.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Deepak S <deepak.s@linux.intel.com>
Reviewed-by: Deepak S <deepak.s@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Boost GPU frequency if we detect outstanding pageflips
Chris Wilson [Tue, 7 Apr 2015 15:20:31 +0000 (16:20 +0100)]
drm/i915: Boost GPU frequency if we detect outstanding pageflips

If we hit a vblank and see that have a pageflip queue but not yet
processed, ensure that the GPU is running at maximum in order to clear
the backlog. Pageflips are only queued for the following vblank, if we
miss it, there will be a visible stutter. Boosting the GPU frequency
doesn't prevent us from missing the target vblank, but it should help
the subsequent frames hitting theirs.

v2: Reorder vblank vs flip-complete so that we only check for a missed
flip after processing the completion events, and avoid spurious boosts.

v3: Rename missed_vblank
v4: Rebase
v5: Cancel the outstanding work in runtime suspend
v6: Rebase
v7: Rebase required fixing

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Deepak S<deepak.s@linux.intel.com>
Reviewed-by: Deepak S<deepak.s@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Fix computation of last_adjustment for RPS autotuning
Chris Wilson [Tue, 7 Apr 2015 15:20:29 +0000 (16:20 +0100)]
drm/i915: Fix computation of last_adjustment for RPS autotuning

The issue is that by computing the last_adj value after applying the
clamping, we can end up with a bogus value for feeding into the next RPS
autotuning step.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Deepak S <deepak.s@linux.intel.com>
Reviewed-by: Deepak S <deepak.s@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Agressive downclocking on Baytrail
Chris Wilson [Tue, 7 Apr 2015 15:20:28 +0000 (16:20 +0100)]
drm/i915: Agressive downclocking on Baytrail

Reuse the same reclocking strategy for Baytail as on its bigger brethren,
Sandybridge and Ivybridge. In particular, this makes the device quicker
to reclock (both up and down) though the tendency now is to downclock
more aggressively to compensate for the RPS boosts.

v2: Rebase
v3: Exclude Cherrytrail as Deepak was concerned that the increased
number of register writes would wake the common powerwell too often.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Deepak S <deepak.s@linux.intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: Deepak S <deepak.s@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Fix the flip synchronisation to consider mmioflips
Chris Wilson [Tue, 7 Apr 2015 15:20:26 +0000 (16:20 +0100)]
drm/i915: Fix the flip synchronisation to consider mmioflips

Currently we emit semaphore synchronisation as if we were going to flip
using the target CS engine, but we then change our minds and do the flip
using the CPU. Consequently we write instructions to the ring but never
use them - even to the point of filling that ring up entirely and never
submitting a request.

The wrinkle in the ointment is that we have to tell a white lie to
pin-to-display for it to skip the synchronisation for mmioflips as we
will create a task specifically for that slow synchronisation. An oddity
of note is the discrepancy in requests that we tell to pin-display to
serialise to and that we then eventually wait upon. This is due to a
limitation in the i915_gem_object_sync() routine that will be lifted
later.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Cache last obj->pages location for i915_gem_object_get_page()
Chris Wilson [Tue, 7 Apr 2015 15:20:25 +0000 (16:20 +0100)]
drm/i915: Cache last obj->pages location for i915_gem_object_get_page()

The biggest user of i915_gem_object_get_page() is the relocation
processing during execbuffer. Typically userspace passes in a set of
relocations in sorted order. Sadly, we alternate between relocations
increasing from the start of the buffers, and relocations decreasing
from the end. However the majority of consecutive lookups will still be
in the same page. We could cache the start of the last sg chain, however
for most callers, the entire sgl is inside a single chain and so we see
no improve from the extra layer of caching.

v2: Avoid the double increment inside unlikely()

References: https://bugs.freedesktop.org/show_bug.cgi?id=88308
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: John Harrison <John.C.Harrison@Intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915/skl: Implement WaDisableVFUnitClockGating
Damien Lespiau [Thu, 26 Feb 2015 18:20:39 +0000 (18:20 +0000)]
drm/i915/skl: Implement WaDisableVFUnitClockGating

Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915/skl: Fix stepping check for a couple of W/As
Damien Lespiau [Thu, 26 Feb 2015 18:20:38 +0000 (18:20 +0000)]
drm/i915/skl: Fix stepping check for a couple of W/As

Both WaDisableSDEUnitClockGating and WaSetGAPSunitClckGateDisable are
needed on B0 as well.

Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Do not set L3-LLC Coherency bit in ctx descriptor
Arun Siluvery [Tue, 7 Apr 2015 13:01:33 +0000 (14:01 +0100)]
drm/i915: Do not set L3-LLC Coherency bit in ctx descriptor

According to Spec this is a reserved bit for Gen9+ and should not be set.

Change-Id: I0215fb7057b94139b7a2f90ecc7a0201c0c93ad4
Signed-off-by: Arun Siluvery <arun.siluvery@linux.intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: use kref_put_mutex in i915_gem_request_unreference__unlocked
Maarten Lankhorst [Tue, 7 Apr 2015 09:32:02 +0000 (11:32 +0200)]
drm/i915: use kref_put_mutex in i915_gem_request_unreference__unlocked

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Don't use staged config in intel_mst_pre_enable_dp()
Ander Conselvan de Oliveira [Thu, 2 Apr 2015 11:48:01 +0000 (14:48 +0300)]
drm/i915: Don't use staged config in intel_mst_pre_enable_dp()

For the conversion to atomic. The pre_enable() hooks are called as part
of the crtc enable sequence, at which point the staged config was
already made effective. Furthermore, the function actually changes
hardware state, so it should anyway deal with current and not staged
config.

Signed-off-by: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Don't use staged config in check_encoder_cloning()
Ander Conselvan de Oliveira [Thu, 2 Apr 2015 11:48:00 +0000 (14:48 +0300)]
drm/i915: Don't use staged config in check_encoder_cloning()

Reduce dependency on the staged config by using the atomic state
instead.

Signed-off-by: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Don't use staged config in check_digital_port_conflicts()
Ander Conselvan de Oliveira [Thu, 2 Apr 2015 11:47:59 +0000 (14:47 +0300)]
drm/i915: Don't use staged config in check_digital_port_conflicts()

Reduce dependency on the staged config by using the atomic state
instead.

Signed-off-by: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Remove intel_crtc->new_config
Ander Conselvan de Oliveira [Thu, 2 Apr 2015 11:47:58 +0000 (14:47 +0300)]
drm/i915: Remove intel_crtc->new_config

It's not needed anymore, now that all the users were converted to using
an atomic state.

Signed-off-by: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Don't use intel_crtc->new_config in pll calculation code
Ander Conselvan de Oliveira [Thu, 2 Apr 2015 11:47:57 +0000 (14:47 +0300)]
drm/i915: Don't use intel_crtc->new_config in pll calculation code

Move towards atomic by using the atomic state instead.

Signed-off-by: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Don't use staged config for VLV cdclk calculations
Ander Conselvan de Oliveira [Thu, 2 Apr 2015 11:47:56 +0000 (14:47 +0300)]
drm/i915: Don't use staged config for VLV cdclk calculations

Now that we use a drm atomic state for the legacy modeset, it is
possible to get rid of the usage of intel_crtc->new_config in the
function intel_mode_max_pixclk().

Signed-off-by: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Silence a sparse warning
Ville Syrjälä [Thu, 2 Apr 2015 15:28:07 +0000 (18:28 +0300)]
drm/i915: Silence a sparse warning

../drivers/gpu/drm/i915/intel_pm.c:3185:45: warning: Initializer entry defined twice
../drivers/gpu/drm/i915/intel_pm.c:3185:52:   also defined here

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Allow disabling the destination colorkey for overlay
Chris Wilson [Thu, 2 Apr 2015 09:35:08 +0000 (10:35 +0100)]
drm/i915: Allow disabling the destination colorkey for overlay

Sometimes userspace wants a true overlay that is never clipped. In such
cases, we need to disable the destination colorkey. However, it is
currently unconditionally enabled in the overlay with no means of
disabling. So rectify that by always default to on, and extending the
UPDATE_ATTR ioctl to support explicit disabling of the colorkey.

This is contrast to the spite code which requires explicit enabling of
either the destination or source colorkey. Handling source colorkey is
still todo for the overlay. (Of course it may be worth migrating overlay
to sprite before then.)

Signed-off-by: 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>
9 years agodrm/i915: add i915 specific connector debugfs file for DPCD
Jani Nikula [Wed, 1 Apr 2015 08:15:21 +0000 (11:15 +0300)]
drm/i915: add i915 specific connector debugfs file for DPCD

Occasionally it would be interesting to read some of the DPCD registers
for debug purposes, without having to resort to logging. Add an i915
specific i915_dpcd debugfs file for DP and eDP connectors to dump parts
of the DPCD. Currently the DPCD addresses to be dumped are statically
configured, and more can be added trivially.

The implementation also makes it relatively easy to add other i915 and
connector specific debugfs files in the future, as necessary.

This is currently i915 specific just because there's no generic way to
do AUX transactions given just a drm_connector. However it's all pretty
straightforward to port to other drivers.

v2: Add more DPCD registers to dump.

Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Bob Paauwe <bob.j.paauwe@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915/bdw: WaProgramL3SqcReg1Default
Rodrigo Vivi [Tue, 31 Mar 2015 23:03:21 +0000 (16:03 -0700)]
drm/i915/bdw: WaProgramL3SqcReg1Default

Program the default initial value of the L3SqcReg1 on BDW for performance

v2: Default confirmed and using intel_ring_emit_wa as Mika pointed out.

v3: Spec shows now a different value. It tells us to set to 0x784000
    instead the 0x610000 that is there already.
    Also rebased after a long time so using WA_WRITE now.

Cc: Mika Kuoppala <mika.kuoppala@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915/skl: Enabling PSR2 SU with frame sync
Sonika Jindal [Thu, 2 Apr 2015 05:32:44 +0000 (11:02 +0530)]
drm/i915/skl: Enabling PSR2 SU with frame sync

We make use of HW tracking for Selective update region and enable frame sync on
sink. We use hardware's hardcoded data values for frame sync and GTC.

v2: Add 3200x2000 resolution restriction with PSR2, move psr2_support to i915_psr
struct, add aux_frame_sync to independently control aux frame sync, rename the
TP2 TIME macro for 2500us (Rodrigo, Siva)
v3: Moving the resolution restriction to intel_psr_enable so that we check it
only once(Durga)

Cc: Durgadoss R <durgadoss.r@intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Sonika Jindal <sonika.jindal@intel.com>
Reviewed-by: Durgadoss R <durgadoss.r@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Make debugfs/i915_gem_request more friendly
Chris Wilson [Wed, 1 Apr 2015 09:36:56 +0000 (10:36 +0100)]
drm/i915: Make debugfs/i915_gem_request more friendly

Count the number of requests in a ring for the user and show who
submitted them.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Set best_encoder field of connector_state also when disabling
Ander Conselvan de Oliveira [Tue, 31 Mar 2015 08:35:00 +0000 (11:35 +0300)]
drm/i915: Set best_encoder field of connector_state also when disabling

The best_encoder field of connector_state wasn't properly set when a
connector was being disabled, leading to an incosistent atomic state.

For now, this doesn't cause anything to blow up, because everywhere
we're using connector_state->best_encoder there is a check for
connector_state->crtc which is properly initialized. I reached the issue
while testing some patches I haven't sent out yet, that remove the usage
of intel_connector->new_encoder from check_digital_port_conflicts(). In
that case, it would be possible to trigger the converted version of the
WARN in that function.

Signed-off-by: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com>
[danvet: Add commit message augmentation Ander supplied.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: base gmbus pin validity check on the gmbus pin map array
Jani Nikula [Thu, 26 Mar 2015 22:20:22 +0000 (00:20 +0200)]
drm/i915: base gmbus pin validity check on the gmbus pin map array

This will be helpful for adding future platforms. It is better to keep
the information in the single point of truth (the table) instead of
duplicating it into the validity function.

While at it, add dev_priv parameter to the function, also to prepare for
adding future platform support.

Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: index gmbus tables using the pin pair number
Jani Nikula [Wed, 1 Apr 2015 07:55:04 +0000 (10:55 +0300)]
drm/i915: index gmbus tables using the pin pair number

Index the gmbus tables directly using the pin instead of having a
confusing "port = i + 1" mapping. This finishes off removing the "gmbus
port" as a notion, and leaves us with just the "gmbus pin".

As pin 0 is invalid by definition and the gmbus tables will have a gap
at that index, add pin validity check to all the loops. This will be
benefitial for supporting platforms that have different numbers of pins,
or gaps.

v2: s/GMBUS_PIN_MAX/GMBUS_NUM_PINS/ (Ville, Daniel)

Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: refer to pin instead of port in the intel_i2c.c interfaces
Jani Nikula [Thu, 26 Mar 2015 22:20:20 +0000 (00:20 +0200)]
drm/i915: refer to pin instead of port in the intel_i2c.c interfaces

Rename intel_gmbus_is_port_valid to intel_gmbus_is_valid_pin, and rename
port parameters to pin as well. This matches usage all around, as
usually a pin is passed to the validity check function. No functional
changes.

Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: rename GMBUS_PORT_* macros as GMBUS_PIN_*
Jani Nikula [Thu, 26 Mar 2015 22:20:19 +0000 (00:20 +0200)]
drm/i915: rename GMBUS_PORT_* macros as GMBUS_PIN_*

The specs refer to pin pairs. Start moving towards using pin rather than
port all around to avoid confusion. No functional changes.

Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Fix for ringbuf space wait in LRC mode
John Harrison [Thu, 19 Mar 2015 12:30:09 +0000 (12:30 +0000)]
drm/i915: Fix for ringbuf space wait in LRC mode

The legacy and LRC code paths have an almost identical procedure for waiting for
space in the ring buffer. They both search for a request in the free list that
will advance the tail to a point where sufficient space is available. They then
wait for that request, retire it and recalculate the free space value.

Unfortunately, a bug in the LRC side meant that the resulting free space might
not be as large as expected and indeed, might not be sufficient. This is because
it was testing against the value of request->tail not request->postfix. Whereas,
when a request is retired, ringbuf->tail is updated to req->postfix not
req->tail.

Another significant difference between the two is that the LRC one did not trust
the wait for request to work! It redid the is there enough space available test
and would fail the call if insufficient. Whereas, the legacy version just said
'return 0' - it assumed the preceeding code works. This difference meant that
the LRC version still worked even with the bug - it just fell back to the
polling wait path.

For: VIZ-5115
Signed-off-by: John Harrison <John.C.Harrison@Intel.com>
Reviewed-by: Thomas Daniel <thomas.daniel@intel.com>
Reviewed-by: Tomas Elf <tomas.elf@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Move common request allocation code into a common function
John Harrison [Thu, 19 Mar 2015 12:30:08 +0000 (12:30 +0000)]
drm/i915: Move common request allocation code into a common function

The request allocation code is largely duplicated between legacy mode and
execlist mode. The actual difference between the two versions of the code is
pretty minimal.

This patch moves the common code out into a separate function. This is then
called by the execution specific version prior to setting up the one different
value.

For: VIZ-5190
Signed-off-by: John Harrison <John.C.Harrison@Intel.com>
Reviewed-by: Tomas Elf <tomas.elf@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Make intel_logical_ring_begin() static
John Harrison [Thu, 19 Mar 2015 12:30:07 +0000 (12:30 +0000)]
drm/i915: Make intel_logical_ring_begin() static

The only usage of intel_logical_ring_begin() is within intel_lrc.c so it can be
made static. To avoid a forward declaration at the top of the file, it and bunch
of other functions have been shuffled upwards.

For: VIZ-5115
Signed-off-by: John Harrison <John.C.Harrison@Intel.com>
Reviewed-by: Tomas Elf <tomas.elf@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Rename 'do_execbuf' to 'execbuf_submit'
John Harrison [Thu, 19 Mar 2015 12:30:06 +0000 (12:30 +0000)]
drm/i915: Rename 'do_execbuf' to 'execbuf_submit'

The submission portion of the execbuffer code path was abstracted into a
function pointer indirection as part of the legacy vs execlist work. The two
implementation functions are called 'i915_gem_ringbuffer_submission' and
'intel_execlists_submission' but the pointer was called 'do_execbuf'. There is
already a 'i915_gem_do_execbuffer' function (which is what calls the pointer
indirection). The name of the pointer is therefore considered to be backwards
and should be changed.

This patch renames it to 'execbuf_submit' which is hopefully a bit clearer.

For: VIZ-5115
Signed-off-by: John Harrison <John.C.Harrison@Intel.com>
Reviewed-by: Tomas Elf <tomas.elf@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Convert the ddi cdclk code to get_display_clock_speed
Ville Syrjälä [Tue, 31 Mar 2015 11:12:01 +0000 (14:12 +0300)]
drm/i915: Convert the ddi cdclk code to get_display_clock_speed

Unify the HSW/BDW/SKL cdclk extraction code to conform to the same
.get_display_clock_speed() mold that all the other platforms
use.

v2: Update due to SKL code getting added

v3: Rebase on top of -nightly (introduction of intel_audio.c) (Mika Kahola)

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Mika Kahola <mika.kahola@intel.com>
Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
[danvet: Add v3 note as suggested by Damien.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Simplify ilk_get_aux_clock_divider
Ville Syrjälä [Tue, 31 Mar 2015 11:11:59 +0000 (14:11 +0300)]
drm/i915: Simplify ilk_get_aux_clock_divider

Now that we are "extracting" the cdclk frequency on ILK-IVB we
can also simplify ilk_get_aux_clock_divider() to calculate the
divider based on cdclk instead of hardcoding the values.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Mika Kahola <mika.kahola@intel.com>
Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Assume 400MHz cdclk for the rest of gen4-7
Ville Syrjälä [Tue, 31 Mar 2015 11:11:56 +0000 (14:11 +0300)]
drm/i915: Assume 400MHz cdclk for the rest of gen4-7

We don't currently have cdclk extraction code for 965g,snb,ivb.
Let's assume 400 MHz until we know better. That seems to match hints
in various vague documents. Whether that's good enough is not
entirely clear.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Mika Kahola <mika.kahola@intel.com>
Acked-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: ILK cdclk seems to be 450MHz
Ville Syrjälä [Tue, 31 Mar 2015 11:11:54 +0000 (14:11 +0300)]
drm/i915: ILK cdclk seems to be 450MHz

Based on the BIOS DP A AUX 2x clock divider the cdclk frequency
on ILK is 450Mhz. At least that holds on my ILK and it matches
how we program the divider.

Supposedly cdclk is 400MHz on SNB and IVB, again based on the AUX 2x
clock divider. Note that I don't have a SNB or IVB machine with
eDP so I couldn't verify what the BIOS used, so this notion is
purely based on our current code,

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Mika Kahola <mika.kahola@intel.com>
Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Return more precise cdclk for gen2/3
Ville Syrjälä [Tue, 31 Mar 2015 11:09:47 +0000 (14:09 +0300)]
drm/i915: Return more precise cdclk for gen2/3

Fill out the lower three digits for gen2 and gen3 cdclk frqeuncy. It's
not clear if these are accurate frquencies or just in the ballpark, but
without docs this is the best we can do.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Mika Kahola <mika.kahola@intel.com>
Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Enable DVO 2x clock around DVO encoder init
Ville Syrjälä [Tue, 31 Mar 2015 07:37:21 +0000 (10:37 +0300)]
drm/i915: Enable DVO 2x clock around DVO encoder init

ns2501 requires the DVO 2x clock before it will respond to i2c access,
so make sure the clock is enabled when we try to initialize the encoder.

Fixes the display getting lost on module reload on my Fujitsu/Siemens
Lifebook S6010.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Mark the overlay active only if we got ring space
Ville Syrjälä [Tue, 31 Mar 2015 07:37:24 +0000 (10:37 +0300)]
drm/i915: Mark the overlay active only if we got ring space

After the GPU has wedged we can't turn on the overlay anymore. Only mark
it as active if we succeed in allocating ring space. This prevents a
WARN (previous;y a BUG) during driver unload if we attempted to use the
overlay after the GPU had already wedged.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Convert overlay->{active, pfit_active} to bools
Ville Syrjälä [Tue, 31 Mar 2015 07:37:23 +0000 (10:37 +0300)]
drm/i915: Convert overlay->{active, pfit_active} to bools

overlay.{active,pfit_active} are just on/off flags, so make them bool.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915: Convert BUGs to WARNs in the video overlay code
Ville Syrjälä [Tue, 31 Mar 2015 07:37:22 +0000 (10:37 +0300)]
drm/i915: Convert BUGs to WARNs in the video overlay code

BUG is bad, just use WARN.

Also drop one BUG(!overlay) since we'd oops anyway when dereferencing
it.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
9 years agodrm/i915/chv: Remove Wait for a previous gfx force-off
Deepak S [Sat, 28 Mar 2015 09:53:34 +0000 (15:23 +0530)]
drm/i915/chv: Remove Wait for a previous gfx force-off

On CHV, PUNIT team confirmed that 'VLV_GFX_CLK_STATUS_BIT' is not a
sticky bit and it will always be set. So ignore Check for previous
Gfx force off during suspend and allow the force clk as part S0ix
Sequence

Signed-off-by: Deepak S <deepak.s@linux.intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>