deliverable/linux.git
10 years agodrm/i915: WARN in case we're enabling the pipe and it's enabled
Paulo Zanoni [Fri, 17 Jan 2014 15:51:13 +0000 (13:51 -0200)] 
drm/i915: WARN in case we're enabling the pipe and it's enabled

... and QUIRK_PIPEA_FORCE is not present.

I initially thought that case was impossible and just added a WARN on
it, but then I was told this case is possible due to
QUIRK_PIPEA_FORCE. So let's add a WARN that serves two purposes:
  - tell us in case we have done something wrong;
  - document the only case where we expect this.

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>
10 years agodrm/i915: remove wait_for_vblank argument form intel_enable_pipe
Paulo Zanoni [Fri, 17 Jan 2014 15:51:12 +0000 (13:51 -0200)] 
drm/i915: remove wait_for_vblank argument form intel_enable_pipe

Add a nice comment explaining why we shouldn't wait for a vblank on
all cases, wait based on the HW gen, and add a comment saying we
should probably skip that wait on some of the previous HW gens.

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>
10 years agodrm/i915: remove "dsi" argument form intel_enable_pipe
Paulo Zanoni [Fri, 17 Jan 2014 15:51:11 +0000 (13:51 -0200)] 
drm/i915: remove "dsi" argument form intel_enable_pipe

Now that we pass struct intel_crtc as an argument, we can check for
DSI inside the function, removing one more of those confusing boolean
arguments.

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>
10 years agodrm/i915: remove pch_port argument form intel_enable_pipe
Paulo Zanoni [Fri, 17 Jan 2014 15:51:10 +0000 (13:51 -0200)] 
drm/i915: remove pch_port argument form intel_enable_pipe

Now that we pass struct intel_crtc as an argument, there's no need for
it.

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>
10 years agodrm/i915: pass intel_crtc as argument for intel_enable_pipe
Paulo Zanoni [Fri, 17 Jan 2014 15:51:09 +0000 (13:51 -0200)] 
drm/i915: pass intel_crtc as argument for intel_enable_pipe

We want to remove those 3 boolean arguments. This is the first step.
The "pipe" passed as the argument is always intel_crtc->pipe.

Also adjust the function documentation.

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>
10 years agodrm/i915: remove the vblank_wait hack from HSW+
Paulo Zanoni [Thu, 19 Dec 2013 21:12:31 +0000 (19:12 -0200)] 
drm/i915: remove the vblank_wait hack from HSW+

When I forked haswell_crtc_enable I copied all the code from
ironlake_crtc_enable. The last piece of the function contains a big
comment with a call to intel_wait_for_vblank. After this fork, we
rearranged the Haswell code so that it enables the planes as the very
last step of the modeset sequence, so we're sure that we call
intel_enable_primary_plane after the pipe is really running, so the
vblank waiting functions work as expected. I really believe this is
what fixes the problem described by the big comment, so let's give it
a try and get rid of that intel_wait_for_vblank, saving around 16ms
per modeset (and init/resume). We can always revert if needed :)

Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/i915: don't wait for vblank after enabling pipe on HSW
Paulo Zanoni [Thu, 19 Dec 2013 21:12:30 +0000 (19:12 -0200)] 
drm/i915: don't wait for vblank after enabling pipe on HSW

Because on Haswell, the pipe is never running at this point, so we hit
the 50ms timeout waiting for nothing. We already have two other places
where we wait for vblanks on haswell_crtc_enable, so we're safe.

This gets us rid of one instance of "vblank wait timed out" for each
mode set, which means driver init and resume are also 50ms faster.

Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/i915: add wait_for_vblank argument to intel_enable_pipe
Paulo Zanoni [Thu, 19 Dec 2013 21:12:29 +0000 (19:12 -0200)] 
drm/i915: add wait_for_vblank argument to intel_enable_pipe

Depending on the HW gen and the connector type, the pipe won't start
running right after we call intel_enable_pipe, so that
intel_wait_for_vblank call we currently have will just sit there for
the full 50ms timeout. So this patch adds an argument that will allow
us to avoid the vblank wait in case we want. Currently all the callers
still request for the vblank wait, so the behavior should still be the
same.

We also added a POSTING_READ on the register: previously
intel_wait_for_vblank was acting as a POSTING_READ, but now if
wait_for_vblank is false we'll stkip it, so we need an explicit
POSTING_READ.

Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/i915: Initialize downclock mode in panel init
Vandana Kannan [Tue, 11 Feb 2014 08:56:36 +0000 (14:26 +0530)] 
drm/i915: Initialize downclock mode in panel init

Instead of modifying intel_panel in lvds_init_connector/dsi_init/
edp_init_connector, making changes to move intel_panel->downclock_mode
initialization to intel_panel_init()

v2: Jani's review comments incorporated
Removed downclock_mode local variable in dsi_init and
edp_init_connector

Signed-off-by: Vandana Kannan <vandana.kannan@intel.com>
Signed-off-by: Pradeep Bhat <pradeep.bhat@intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/i915: add a display info file to debugfs v2
Jesse Barnes [Fri, 7 Feb 2014 20:48:15 +0000 (12:48 -0800)] 
drm/i915: add a display info file to debugfs v2

Can be expanded up on to include all sorts of things (HDMI infoframe
data, more DP status, etc).  Should be useful for bug reports to get a
baseline on the display config and info.

v2: use seq_putc (Rodrigo)
    describe mode field names (Rodrigo)

Reviewed-by: Rodrigo Vivi <rodrigo.vivi@gmail.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm: expose subpixel order name routine v3
Jesse Barnes [Mon, 10 Feb 2014 23:32:44 +0000 (15:32 -0800)] 
drm: expose subpixel order name routine v3

Just like we have for connector type etc.

v2: drop static array (Chris)
v3: add kdoc (Daniel)

Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Acked-by: Dave Airlie <airlied@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/i915: split aligned height calculation out v2
Jesse Barnes [Fri, 7 Feb 2014 20:10:35 +0000 (12:10 -0800)] 
drm/i915: split aligned height calculation out v2

For use by get_plane_config.

v2: cleanup tile_height bits (Chris)

Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/i915: Fix error path leak in fbdev fb allocation
Daniel Vetter [Mon, 10 Feb 2014 17:00:39 +0000 (18:00 +0100)] 
drm/i915: Fix error path leak in fbdev fb allocation

In Jesse's patch to switch the fbdev framebuffer from an embedded
struct to a pointer the kfree in case of an error was missed. Fix this
up by using our own internal fb allocation helper directly instead of
reinventing that wheel.

We need a to_intel_framebuffer cast unfortunately since all the other
callers of _create still look better whith using a drm_framebuffer as
return pointer.

v2: Add an unlocked __intel_framebuffer_create function since our
dev->struct_mutex locking is too much a mess. With ppgtt we even need
it to take a look at the global gtt offset of pinned objects, since
the vma list might chance from underneath us. At least with the
current global gtt lookup functions. Reported by Mika.

Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/i915: Use normal fb deref for the fbcon framebuffer
Daniel Vetter [Mon, 10 Feb 2014 17:00:38 +0000 (18:00 +0100)] 
drm/i915: Use normal fb deref for the fbcon framebuffer

Now that it's a normally kmalloce buffer we can use the usual cleanup
paths. The upside here is that if we get the refcounting wrong will be
able to catch it, since the drm core will complain about leftover
framebuffers and kref about underflows.

v2: Kill intel_framebuffer_fini - no longer needed now that we
refcount all fbs properly and only confusing.

v3: We actually still need to call unregister_private to remove the fb
from the idr and drop the idr reference - the final unref doesn't do
that. So much for remembering my own fb liftime rules. Reported by
Imre Deak.

Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org> (v2)
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/i915: Provide a command line option to disable display
Damien Lespiau [Mon, 10 Feb 2014 17:20:55 +0000 (17:20 +0000)] 
drm/i915: Provide a command line option to disable display

If we can't actually determine at run-time we have a fused-off display,
provide at least an option to disable it.

v2: Move the i915.disable_display test in a separate check
    (Daniel Vetter)

Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/i915: Disable display when fused off
Damien Lespiau [Mon, 10 Feb 2014 17:19:45 +0000 (17:19 +0000)] 
drm/i915: Disable display when fused off

FUSE_STRAP has a bit to inform us that the display has been fused off.
Use it to setup the definitive number of pipes at run-time.

v2: actually tweak num_pipes, not num_planes
v3: also tests SFUSE_STRAP bit 7
v4: rebase on top of drm-nightly
    use DRM_INFO() for the message telling display is fused off
    try to read the FUSE_LOCK bit to determine if PCH display is disabled
v5: Don't read SFUSE_STRAP (register on the PCH) if num_pipes is already 0
    from the initial device info struct (to prevent hangs) (Daniel Vetter)

Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com> (for v3)
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> (for v3)
Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/i915: Flush GPU rendering with a lockless wait during a pagefault
Chris Wilson [Fri, 7 Feb 2014 20:37:06 +0000 (18:37 -0200)] 
drm/i915: Flush GPU rendering with a lockless wait during a pagefault

Arjan van de Ven reported that on his test machine that he was seeing
stalls of greater than 1 frame greatly impacting the user experience. He
tracked this down to being the locked flush during a pagefault as being
the culprit hogging the struct_mutex and so blocking any other user from
proceeding. Stalling on a pagefault is bad behaviour on userspace's
part, for one it means that they are ignoring the coherency rules on
pointer access through the GTT, but fortunately we can apply the same
trick as the set-to-domain ioctl to do a lightweight, nonblocking flush
of outstanding rendering first.

"Prior to the patch it looks like this
(this one testrun does not show the 20ms+ I've seen occasionally)

  4.99 ms     2.36 ms    31360  __wait_seqno i915_wait_seqno i915_gem_object_wait_rendering i915_gem_object_set_to_gtt_domain i915_gem_fault __do_fault handle_
+pte_fault handle_mm_fault __do_page_fault do_page_fault page_fault
   4.99 ms     2.75 ms   107751  __wait_seqno i915_gem_wait_ioctl drm_ioctl i915_compat_ioctl compat_sys_ioctl ia32_sysret
   4.99 ms     1.63 ms     1666  i915_mutex_lock_interruptible i915_gem_fault __do_fault handle_pte_fault handle_mm_fault __do_page_fault do_page_fault page_fa
+ult
   4.93 ms     2.45 ms      980  i915_mutex_lock_interruptible intel_crtc_page_flip drm_mode_page_flip_ioctl drm_ioctl i915_compat_ioctl compat_sys_ioctl ia32_
+sysret
   4.89 ms     2.20 ms     3283  i915_mutex_lock_interruptible i915_gem_wait_ioctl drm_ioctl i915_compat_ioctl compat_sys_ioctl ia32_sysret
   4.34 ms     1.66 ms     1715  i915_mutex_lock_interruptible i915_gem_pwrite_ioctl drm_ioctl i915_compat_ioctl compat_sys_ioctl ia32_sysret
   3.73 ms     3.73 ms       49  i915_mutex_lock_interruptible i915_gem_set_domain_ioctl drm_ioctl i915_compat_ioctl compat_sys_ioctl ia32_sysret
   3.17 ms     0.33 ms      931  i915_mutex_lock_interruptible i915_gem_madvise_ioctl drm_ioctl i915_compat_ioctl compat_sys_ioctl ia32_sysret
   2.97 ms     0.43 ms     1029  i915_mutex_lock_interruptible i915_gem_busy_ioctl drm_ioctl i915_compat_ioctl compat_sys_ioctl ia32_sysret
   2.55 ms     0.51 ms      735  i915_gem_get_tiling drm_ioctl i915_compat_ioctl compat_sys_ioctl ia32_sysret

After the patch it looks like this:

   4.99 ms     2.14 ms    22212  __wait_seqno i915_gem_wait_ioctl drm_ioctl i915_compat_ioctl compat_sys_ioctl ia32_sysret
   4.86 ms     0.99 ms    14170  __wait_seqno i915_gem_object_wait_rendering__nonblocking i915_gem_fault __do_fault handle_pte_fault handle_mm_fault __do_page_
+fault do_page_fault page_fault
   3.59 ms     1.31 ms      325  i915_gem_get_tiling drm_ioctl i915_compat_ioctl compat_sys_ioctl ia32_sysret
   3.37 ms     3.37 ms       65  i915_mutex_lock_interruptible i915_gem_wait_ioctl drm_ioctl i915_compat_ioctl compat_sys_ioctl ia32_sysret
   2.58 ms     2.58 ms       65  i915_mutex_lock_interruptible i915_gem_do_execbuffer.isra.23 i915_gem_execbuffer2 drm_ioctl i915_compat_ioctl compat_sys_ioctl
+ia32_sysret
   2.19 ms     2.19 ms       65  i915_mutex_lock_interruptible intel_crtc_page_flip drm_mode_page_flip_ioctl drm_ioctl i915_compat_ioctl compat_sys_ioctl ia32_
+sysret
   2.18 ms     2.18 ms       65  i915_mutex_lock_interruptible i915_gem_busy_ioctl drm_ioctl i915_compat_ioctl compat_sys_ioctl ia32_sysret
   1.66 ms     1.66 ms       65  i915_gem_set_tiling drm_ioctl i915_compat_ioctl compat_sys_ioctl ia32_sysret

It may not look like it, but this is quite a large difference, and I've
been unable to reproduce > 5 msec delays at all, while before they do
happen (just not in the trace above)."

gem_gtt_hog on an old Pineview (GMA3150),
before: 4969.119ms
after:  4122.749ms

Reported-by: Arjan van de Ven <arjan.van.de.ven@intel.com>
Testcase: igt/gem_gtt_hog
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@gmail.com>
Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/i915: vlv: handle only enabled pipestat interrupt events
Imre Deak [Mon, 10 Feb 2014 16:42:49 +0000 (18:42 +0200)] 
drm/i915: vlv: handle only enabled pipestat interrupt events

Atm we call the handlers for pending pipestat interrupt events even if
they aren't explicitly enabled by i915_enable_pipestat(). This isn't an
issue for events other than the vblank start event, since those are
always enabled anyways. Otoh, we enable the vblank start event
on-demand, so we'll end up calling the vblank handler at times when they
are disabled.

I haven't checked if this causes any real problem, but for consistency
and to remove some overhead we should still fix this by clearing /
handling only the enabled interrupt events. Also this is a dependency
for the upcoming VLV power domain patchset where we need to disable all
the pipestat interrupts whenever the display power well is off.

v2:
- inline the status->enable mask mapping (Ville)
- don't check for invalid PSR bit on platforms other than VLV (Ville)

Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
[danvet: Frob conflict due to different merge order.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/i915: vlv: fix mapping of pipestat enable to status bits
Imre Deak [Mon, 10 Feb 2014 16:42:48 +0000 (18:42 +0200)] 
drm/i915: vlv: fix mapping of pipestat enable to status bits

At least on VLV we can't get at the pipestat status bits by simply right
shifting the corresponding enable bits. The mapping between enable and
status bits for the sprite0,1 flip done and the PSR events don't follow
this rule, so we need to map them separately.

The PSR enable for pipe A is DPFLIPSTAT[22], but I haven't added support
for this, since there is no user of it atm. Until support is added WARN
if someone tries to enable PSR interrupts, or tries to enable the same
(1 << 6) bit on pipe B, which MBZ.

v2:
- inline the status->enable mask mapping (Ville)
- fix bogus use of status bits in enable mask (Ville)

Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/i915: pass status instead of enable flags to i915_enable_pipestat
Imre Deak [Mon, 10 Feb 2014 16:42:47 +0000 (18:42 +0200)] 
drm/i915: pass status instead of enable flags to i915_enable_pipestat

There isn't any PSR interrupt enable bit for pipe A, so we couldn't
enable it through the current API. Passing the corresponding status bits
solves this and also makes the mapping between enable and status bits
simpler on VLV (addressed in an upcoming patch).

Except of checking for invalid status bit arguments, no functional
change.

v2: split out the low level parts of i915_enable_pipestat accepting
    separate enabled and status masks, to make the non-standard mapping
    between those masks stand out more (added in the next patch)
    (Jesse,Daniel)

Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/i915: Short-circuit no-op vga_set_state()
Chris Wilson [Fri, 7 Feb 2014 20:37:03 +0000 (18:37 -0200)] 
drm/i915: Short-circuit no-op vga_set_state()

Touching the VGA registers risks a hard machine hang, at least on this
ivb machine after removing a conflicting efifb. This is more than likely
related to the discovery that VGA IO decode on the more recent PCH
platforms is terminally broken.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/i915: Propagate PCI read/write errors during vga_set_state()
Chris Wilson [Fri, 7 Feb 2014 20:37:02 +0000 (18:37 -0200)] 
drm/i915: Propagate PCI read/write errors during vga_set_state()

This has very little effect other than log the errors in case of failure,
and we then hope for the best.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/i915: alloc intel_fb in the intel_fbdev struct
Jesse Barnes [Fri, 7 Feb 2014 20:10:38 +0000 (12:10 -0800)] 
drm/i915: alloc intel_fb in the intel_fbdev struct

Allocate this struct instead, so we can re-use another allocated
elsewhere if needed.

Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
[danvet: WARN_ON if there's no backing storage attached to an fb,
that's a bug.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/i915: Downgrade *ERROR* message for invalid user input
Chris Wilson [Mon, 10 Feb 2014 09:03:50 +0000 (09:03 +0000)] 
drm/i915: Downgrade *ERROR* message for invalid user input

When we detect that the user passed along an invalid handle or object,
we emit a warning as an aide for debugging. Since these are indeed only
for debugging user triggerable errors (and the errors are reported back
to userspace by the errno), the messages should only be at the debug
level and not claiming that there is a catastrophic error in the
driver/hardware.

References: https://bugs.freedesktop.org/show_bug.cgi?id=74704
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/i915: Reorder i915_params fields to not create holes
Damien Lespiau [Fri, 7 Feb 2014 19:12:53 +0000 (19:12 +0000)] 
drm/i915: Reorder i915_params fields to not create holes

Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/i915: Use I915_MAX_PIPES in the pipe/plane_to_crtc_mapping definitions
Damien Lespiau [Fri, 7 Feb 2014 19:12:52 +0000 (19:12 +0000)] 
drm/i915: Use I915_MAX_PIPES in the pipe/plane_to_crtc_mapping definitions

Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/i915: Consolidate FUSE_STRAP in one set of defines
Damien Lespiau [Fri, 7 Feb 2014 19:12:50 +0000 (19:12 +0000)] 
drm/i915: Consolidate FUSE_STRAP in one set of defines

We had 2 set of defines for the same register, so make it one.

Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/i915: Move num_plane to the intel_device_info structure
Damien Lespiau [Fri, 7 Feb 2014 19:12:49 +0000 (19:12 +0000)] 
drm/i915: Move num_plane to the intel_device_info structure

And rename it to num_sprites as this value doesn't count the primary
plane.

This limit lives with num_pipes really, and now that dev_priv->info is
writable we can put it there instead.

While at it, introduce a intel_device_info_runtime_init() where we'll be
able to gather the device info fields at run-time.

v2: rename num_plane to num_sprites (Ville Syrjälä)
v3: rebase on top of latest drm-nightly

Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com> (for v2)
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> (for v2)
Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/i915: Make the intel_device_info structure kept in dev_priv writable
Damien Lespiau [Fri, 7 Feb 2014 19:12:48 +0000 (19:12 +0000)] 
drm/i915: Make the intel_device_info structure kept in dev_priv writable

Turns out it'd be nice to change some device information at run-time or simply
have some code to fill in the info struct instead of having to declare the
values in 30+ structures.

What prompted this change is handling fused out display/pipe and tweaking
num_pipes at run-time, but I'm quite sure we'll find other flags/limits to
stick into dev_priv->info.

Most of the changes were done with a sed:
sed -i -e 's/dev_priv->info->/dev_priv->info./g' drivers/gpu/drm/i915/*[ch]

with a few tweaks to make it all work:
- Change the field definition in struct drm_i915_private
- adjust i915_dump_device_info()
- adjust i915_driver_load()
- adjust the INTEL_INFO() macro

v2: cast the info pointer returned by INTEL_INFO() to be const to catch
    uses that would modify the structure post-initialization.
    (Ville Syrjälä)

v3: Redo the patch onto latest drm-nightly,
    Keep the info field const to catch post initialization writes
    instead of the v2 solution,
    Use a direct structure copy for the initial info initialization to
    use the compiler type safety (Ville Syrjälä)

Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com> (for v2)
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> (for v2)
Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/i915: Always use INTEL_INFO() to access the device_info structure
Damien Lespiau [Fri, 7 Feb 2014 19:12:47 +0000 (19:12 +0000)] 
drm/i915: Always use INTEL_INFO() to access the device_info structure

If we make sure that all the dev_priv->info usages are wrapped by
INTEL_INFO(), we can easily modify the ->info field to be structure and
not a pointer while keeping the const protection in the INTEL_INFO()
macro.

v2: Rebased onto latest drm-nightly

Suggested-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/i915: Disable SF pipelined attribute fetch for SNB
Ville Syrjälä [Tue, 4 Feb 2014 19:59:18 +0000 (21:59 +0200)] 
drm/i915: Disable SF pipelined attribute fetch for SNB

According to Bspec we need to disable SF pipelined attribute fetch
whenever SF outputs exceed 16 and normal clip mode is used. A quick
glance at Mesa suggests that these conditions could happen. So let's
just always set the magic bit.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/i915: Update rps interrupt limits
Jeff McGee [Tue, 4 Feb 2014 17:37:01 +0000 (11:37 -0600)] 
drm/i915: Update rps interrupt limits

sysfs changes to rps min and max delay were only triggering an update
of the rps interrupt limits if the active delay required an update.
This change ensures that interrupt limits are always updated.

v2: correct compile issue missed on rebase
v3: add igt testcases to signed-off-by section

Testcase: igt/pm_rps/min-max-config-idle
Testcase: igt/pm_rps/min-max-config-loaded
Signed-off-by: Jeff McGee <jeff.mcgee@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/i915: Restore rps/rc6 on reset
Jeff McGee [Tue, 4 Feb 2014 17:32:31 +0000 (11:32 -0600)] 
drm/i915: Restore rps/rc6 on reset

A check of rps/rc6 state after i915_reset determined that the ring
MAX_IDLE registers were returned to their hardware defaults and that
the GEN6_PMIMR register was set to mask all interrupts. This change
restores those values to their pre-reset states by re-initializing
rps/rc6 in i915_reset. A full re-initialization was opted for versus
a targeted set of restore operations for simplicity and maintain-
ability. Note that the re-initialization is not done for Ironlake,
due to a past comment that it causes problems.

Also updated the rps initialization sequence to preserve existing
min/max values in the case of a re-init. We assume the values were
validated upon being set and do not do further range checking. The
debugfs interface for changing min/max was updated with range
checking to ensure this condition (already present in sysfs
interface).

v2: fix rps logging to output hw_max and hw_min, not rps.max_delay
    and rps.min_delay which don't strictly represent hardware limits.
    Add igt testcase to signed-off-by section.

Testcase: igt/pm_rps/reset
Signed-off-by: Jeff McGee <jeff.mcgee@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/i915: Prevent recursion by retiring requests when the ring is full
Chris Wilson [Mon, 27 Jan 2014 22:43:07 +0000 (22:43 +0000)] 
drm/i915: Prevent recursion by retiring requests when the ring is full

As the VM do not track activity of objects and instead use a large
hammer to forcibly idle and evict all of their associated objects when
one is released, it is possible for that to cause a recursion when we
need to wait for free space on a ring and call retire requests.
(intel_ring_begin -> intel_ring_wait_request ->
i915_gem_retire_requests_ring -> i915_gem_context_free ->
i915_gem_evict_vm -> i915_gpu_idle -> intel_ring_begin etc)

In order to remove the requirement for calling retire-requests from
intel_ring_wait_request, we have to inline a couple of steps from
retiring requests, notably we have to record the position of the request
we wait for and use that to update the available ring space.

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>
10 years agodrm/i915: Generate a hang error code
Ben Widawsky [Tue, 4 Feb 2014 12:18:55 +0000 (12:18 +0000)] 
drm/i915: Generate a hang error code

We get a large number of bugs which have a, "hey I have that too"
because they see a GPU hang in dmesg. While two machines of the same
model having a GPU hang is indeed a coincidence, it is far from enough
evidence to suggest they are the same.

In order to reduce this effect, and hopefully get people to file new bug
reports, clearly the error message itself has been insufficient (see ref
at the bottom for a new bug report with this characteristic).

The algorithm is purposely pretty naive. I don't think we need much in
order to avoid the problem I am trying to solve, and keeping it naive
gives us some ability to make a decent test case.

Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
References: https://bugs.freedesktop.org/show_bug.cgi?id=73276
Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/i915: unify FLIP_DONE macro names
Imre Deak [Tue, 4 Feb 2014 19:35:48 +0000 (21:35 +0200)] 
drm/i915: unify FLIP_DONE macro names

s/FLIPDONE/FLIP_DONE/ to make all FLIP_DONE macro names consistent.

No functional change.

Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/i915: vlv: s/spin_lock_irqsave/spin_lock/ in irq handler
Imre Deak [Tue, 4 Feb 2014 19:35:47 +0000 (21:35 +0200)] 
drm/i915: vlv: s/spin_lock_irqsave/spin_lock/ in irq handler

Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/i915: factor out valleyview_pipestat_irq_handler
Imre Deak [Tue, 4 Feb 2014 19:35:46 +0000 (21:35 +0200)] 
drm/i915: factor out valleyview_pipestat_irq_handler

This will be used by other platforms too, so factor it out.

The only functional change is the reordeing of gmbus_irq_handler() wrt.
the hotplug handling, but since it only schedules a work, it isn't an
issue.

Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
[danvet: Don't keep on using the private_t typedef.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/i915: vlv: don't unmask IIR[DISPLAY_PIPE_A/B_VBLANK] interrupt
Imre Deak [Tue, 4 Feb 2014 19:35:45 +0000 (21:35 +0200)] 
drm/i915: vlv: don't unmask IIR[DISPLAY_PIPE_A/B_VBLANK] interrupt

Bspec and the code suggests that the interrupt signaled by IIR[7,5]
(DISPLAY_PIPE_A/B_VBLANK) is a first level IRQ flag for the second
level PIPEA/BSTAT[2] (Start of Vertical Blank) interrupt. Measuring
the relative timings of when IIR[7] and PIPEASTAT[1,2] get set and
checking the effect of unmasking different pipestat and IIR events
shows that this isn't so:

First, ISR/IIR[7] gets set independently of PIPEASTAT[18] (Start of
Vertical Blank Enable) or any other pipestat enable bit, so it isn't
a first level IRQ bit showing the state of PIPEASTAT[2], but is
connected directly to the timing generator.

Second, setting only PIPEASTAT[18] and leaving all other pipestat events
disabled, IIR[6] (DISPLAY_PIPE_A_EVENT) gets set close to the moment when
PIPEASTAT[2] gets set, so the former is a first level interrupt flag for
the latter. The bspec is rather unclear about this, but I also assume
that IIR[6] signals all pipestat A events, except PIPEASTAT[31] (FIFO
Under-run Status).

Third, IIR[7] is set close to the moment when PIPEASTAT[1] (Framestart
Interrupt) gets set, in the mode I used about 12usec after PIPEASTAT[2]
and IIR[6] gets set. This means the IIR[7] isn't marking the start of
vblank, but rather signals the framestart event.

Based on the above, we don't need to unmask IIR[7] when waiting for
start of vblank events, but we can rely on IIR[6] being always unmasked,
which will signal when PIPEASTAT[2] gets set. Doing this will also get
rid of the overhead of getting an interrupt and servicing IIR[7], which
is atm raised always some time after IIR[6]/PIPEASTAT[2] is raised.

Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/i915: Reorganize display pipe register accesses
Antti Koskipaa [Tue, 4 Feb 2014 12:22:24 +0000 (14:22 +0200)] 
drm/i915: Reorganize display pipe register accesses

RFCv2: Reorganize array indexing so that full offsets can be used as
is. It makes grepping for registers in i915_reg.h much easier. Also
move offset arrays to intel_device_info.

v1: Fixed offsets for VLV, proper eDP handling

v2: Fixed BCLRPAT, PIPESRC, PIPECONF and DSP* macros.

v3: Added EDP pipe comment, removed redundant offset arrays for
    MSA_MISC and DDI_FUNC_CTL.

v4: Rename patch and report object size increase.

v5: Change location of commas, add PIPE_EDP into enum pipe

v6: Insert PIPE_EDP_OFFSET into pipe offset array

v7: Set I915_MAX_PIPES back to 3, change more registers accessors
    to use the new macros, get rid of _PIPE_INC and add dev_priv
    as a parameter where required by the new macros.

Upcoming hardware will not have the various display pipe register
ranges evenly spaced in memory. Change register address calculations
into array lookups.

Tested on SNB, VLV, IVB, Gen2 and HSW w/eDP.

I left the UMS cruft untouched.

Size differences:
   text    data     bss     dec     hex filename
 596431    4634      56  601121   92c21 i915.ko (new)
 593199    4634      56  597889   91f81 i915.ko (old)

Signed-off-by: Antti Koskipaa <antti.koskipaa@linux.intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Tested-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/i915: Treat using a purged buffer as a source of EFAULT
Chris Wilson [Fri, 31 Jan 2014 11:34:58 +0000 (11:34 +0000)] 
drm/i915: Treat using a purged buffer as a source of EFAULT

Since a purged buffer is one without any associated pages, attempting to
use it should generate EFAULT rather than EINVAL, as it is not strictly
an invalid parameter.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/i915: Convert EFAULT into a silent SIGBUS
Chris Wilson [Fri, 31 Jan 2014 11:34:57 +0000 (11:34 +0000)] 
drm/i915: Convert EFAULT into a silent SIGBUS

EFAULT will be a possible return code where backing storage is
transient, such after it is purged by madvise. As such it is to be
expected and so should not trigger a WARN inside i915_gem_fault() but be
converted silently to SIGBUS.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/i915: release mutex in i915_gem_init()'s error path
Mika Kuoppala [Fri, 31 Jan 2014 15:14:02 +0000 (17:14 +0200)] 
drm/i915: release mutex in i915_gem_init()'s error path

Found with smatch.

Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/i915: check for oom when allocating private_default_ctx
Mika Kuoppala [Fri, 31 Jan 2014 15:00:28 +0000 (17:00 +0200)] 
drm/i915: check for oom when allocating private_default_ctx

Found with smatch

Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/i915/vlv: WA to fix Voltage not getting dropped to Vmin when Gfx is power gated.
Deepak S [Thu, 30 Jan 2014 17:38:16 +0000 (23:08 +0530)] 
drm/i915/vlv: WA to fix Voltage not getting dropped to Vmin when Gfx is power gated.

When we enter RC6 and GFX Clocks are off, the voltage remains higher
than Vmin. When we try to set the freq to RPn, it might fail since the
Gfx clocks are down. So to fix this in Gfx idle, Bring the GFX clock up
and set the freq to RPn then move GFx down.

v2: remove vlv_update_rps_cur_delay function. Update commit message (Daniel)

v3: Fix the timeout during wait for gfx clock (Jesse)

v4: addressed comments on set freq and punit wait (Ville)

v5: use wait_for while waiting for GFX clk to be up. (Daniel)
    update cur_delay before requesting min_delay. (Ville)

v6: use wait_for while waiting for punit. (Ville)

Signed-off-by: Deepak S <deepak.s@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/i915: Get rid of acthd based guilty batch search
Mika Kuoppala [Thu, 30 Jan 2014 17:04:44 +0000 (19:04 +0200)] 
drm/i915: Get rid of acthd based guilty batch search

As we seek the guilty batch using request and hangcheck
score, this code is not needed anymore.

v2: Rebase. Passing dev_priv instead of getting it from last_ring

Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
Reviewed-by: Ben Widawsky <ben@bwidawsk.net> (v1)
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/i915: Use hangcheck score to find guilty context
Mika Kuoppala [Thu, 30 Jan 2014 17:04:43 +0000 (19:04 +0200)] 
drm/i915: Use hangcheck score to find guilty context

With full ppgtt using acthd is not enough to find guilty
batch buffer. We get multiple false positives as acthd is
per vm.

Instead of scanning which vm was running on a ring,
to find corressponding context, use a different, simpler,
strategy of finding batches that caused gpu hang:

If hangcheck has declared ring to be hung, find first non complete
request on that ring and claim it was guilty.

v2: Rebase

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=73652
Suggested-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
Reviewed-by: Ben Widawsky <ben@bwidawsk.net> (v1)
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/i915: Drop WaDisablePSDDualDispatchEnable:ivb for IVB GT2
Ville Syrjälä [Wed, 22 Jan 2014 19:32:45 +0000 (21:32 +0200)] 
drm/i915: Drop WaDisablePSDDualDispatchEnable:ivb for IVB GT2

Both Bspec and the W/A database state that WaDisablePSDDualDispatchEnable
is only needed for IVB GT1.

The only real confusion here is that the the W/A database also says to
write to the GT2 only register as well, which is strange if the W/A is
only for GT1.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/i915: Fix IVB GT2 WaDisableDopClockGating and WaDisablePSDDualDispatchEnable
Ville Syrjälä [Wed, 22 Jan 2014 19:32:44 +0000 (21:32 +0200)] 
drm/i915: Fix IVB GT2 WaDisableDopClockGating and WaDisablePSDDualDispatchEnable

IVB GT2 has two registers for these things, and both must be written.

To add a bit more confusion both Bspec and the W/A database state that
WaDisablePSDDualDispatchEnable is only needed for IVB GT1, but the W/A
database also says to write even the second GT2 only register. So I
don't really know what the right thing here is.

Note that Bspec disagrees with the w/a database here, but Ville
confirmed (by asking Chris) that on gt1 the 2nd reg doesn't exist.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@gmail.com>
[danvet: Add note as requested by Rodrigo.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/i915: Don't access snooped pages through the GTT (even for error capture)
Chris Wilson [Thu, 30 Jan 2014 14:38:16 +0000 (14:38 +0000)] 
drm/i915: Don't access snooped pages through the GTT (even for error capture)

We want to use the GTT for reading back objects upon an error so that we
have exactly the information that the GPU saw. However, it is verboten
to access snoopable pages through the GTT and causes my PineView GPU to
throw a page fault instead.

This has not been a problem in the past as we only dumped ringbuffers
and batchbuffers, both of which must be not snooped. However, the
introduction of HWS page dumping leads to a read of a snooped object
through the GTT. This was introduced by

commit f3ce3821393e31a3f1a8ca6c24eb2d735a428445
Author: Chris Wilson <chris@chris-wilson.co.uk>
Date:   Thu Jan 23 22:40:36 2014 +0000

    drm/i915: Include HW status page in error capture

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
[danvet:s/uncached/not snooped/ for one case in the commit message as
requested by Chris.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/i915: Only print information for filing bug reports once
Chris Wilson [Thu, 30 Jan 2014 14:38:15 +0000 (14:38 +0000)] 
drm/i915: Only print information for filing bug reports once

Repeating the same information multiple times is just annoying.

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>
10 years agodrm/i915: Tune down debug output when context is banned
Mika Kuoppala [Thu, 30 Jan 2014 14:05:48 +0000 (16:05 +0200)] 
drm/i915: Tune down debug output when context is banned

If we have stopped rings then we know that test is running
so no need for spam. In addition, only spam when default
context gets banned.

v2: - make sure default context ban gets shown (Chris)
    - use helper for checking for default context, everywhere (Chris)

v3: - dont be quiet when debug is set (Ben, Daniel)

Reference: https://bugs.freedesktop.org/show_bug.cgi?id=73652
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>
10 years agodrm/i915: Use i915_hw_context to set reset stats
Mika Kuoppala [Thu, 30 Jan 2014 14:01:15 +0000 (16:01 +0200)] 
drm/i915: Use i915_hw_context to set reset stats

With full ppgtt support drm_i915_file_private gained knowledge
about the default context. Also reset stats are now inside
i915_hw_context so we can use proper abstraction.

v2: Move BUG_ON and WARN_ON to more proper locations (Ben)

v3: Pass dev directly to i915_context_is_banned to avoid the need to
dereference ctx->last_ring. Spotted by Mika when checking my
s/BUG/WARN/ change, I've missed this ->last_ring dereference.

Suggested-by: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com> (v2)
Reviewed-by: Ben Widawsky <ben@bwidawsk.net> (v2)
[danvet: s/BUG/WARN/]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/i915: enable HiZ Raw Stall Optimization on IVB
Chia-I Wu [Tue, 28 Jan 2014 05:29:34 +0000 (13:29 +0800)] 
drm/i915: enable HiZ Raw Stall Optimization on IVB

The optimization helps IVB too.  No piglit regression.

Signed-off-by: Chia-I Wu <olv@lunarg.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/i915: enable HiZ Raw Stall Optimization on HSW
Chia-I Wu [Tue, 28 Jan 2014 05:29:33 +0000 (13:29 +0800)] 
drm/i915: enable HiZ Raw Stall Optimization on HSW

The optimization is available on Ivy Bridge and later, and is disabled by
default.  Enabling it helps certain workloads such as GLBenchmark TRex test.

No piglit regression.

v2
 - no need to save the register before suspend as init_clock_gating can
   correctly program it after resume
 - split IVB change to another commit

Signed-off-by: Chia-I Wu <olv@lunarg.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/i915: Capture PPGTT info on error capture
Ben Widawsky [Thu, 30 Jan 2014 08:19:40 +0000 (00:19 -0800)] 
drm/i915: Capture PPGTT info on error capture

v2: Rebased upon cleaned up error state
v3: Make sure hangcheck info remains last (Chris)

Cc: Chris Wilson <chris@chris-wilson.co.uk>
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>
10 years agodrm/i915: Add some more registers to error state
Ben Widawsky [Thu, 30 Jan 2014 08:19:39 +0000 (00:19 -0800)] 
drm/i915: Add some more registers to error state

Chris:
Do we also want to capture?
  GAC_ECO_BITS /* gen6,7 */
  GAM_ECOCHK /* gen6,7 */
  GAB_CTL /* gen6 */
  GFX_MODE /* gen6 */

Requested-by: Chris Wilson <chris@chris-wilson.co.uk>
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>
10 years agodrm/i915: Move per ring error state to ring_error
Ben Widawsky [Thu, 30 Jan 2014 08:19:38 +0000 (00:19 -0800)] 
drm/i915: Move per ring error state to ring_error

v2: Moved num_requests up (Chris)
Rebased on new hws page capture which required a rename since it made
two members named, 'hws' in the per ring error state. (Ben)

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>
10 years agodrm/i915: Reorder struct members
Ben Widawsky [Thu, 30 Jan 2014 08:19:37 +0000 (00:19 -0800)] 
drm/i915: Reorder struct members

This helps make an upcoming patch a bit more reviewable

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>
10 years agodrm/i915: Logically reorder error register capture
Ben Widawsky [Thu, 30 Jan 2014 08:19:36 +0000 (00:19 -0800)] 
drm/i915: Logically reorder error register capture

Create logical sections in an attempt to clean up, and continue to keep
future additions clean.

v2: Reworded the comments. Added section headers (Chris)

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>
10 years agodrm/i915: Extract register state error capture
Ben Widawsky [Thu, 30 Jan 2014 08:19:35 +0000 (00:19 -0800)] 
drm/i915: Extract register state error capture

The code has become quite hairy. By relocating all the generic registers
it will become more obvious where future ones should go. There is still
admittedly a bit of confusion left for things like per ring registers.

A subsequent patch will clean this function up.

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>
10 years agoMerge remote-tracking branch 'airlied/drm-next' into drm-intel-next-queued
Daniel Vetter [Thu, 30 Jan 2014 11:56:51 +0000 (12:56 +0100)] 
Merge remote-tracking branch 'airlied/drm-next' into drm-intel-next-queued

Backmerge drm-next - I need to backmerge drm-intel-fixes patches
touching the error capture code to be able to merge Ben's cleanup
patches.

Conflicts:
drivers/gpu/drm/i915/i915_gpu_error.c

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agoMerge branch 'drm-nouveau-next' of git://anongit.freedesktop.org/git/nouveau/linux...
Dave Airlie [Thu, 30 Jan 2014 00:46:06 +0000 (10:46 +1000)] 
Merge branch 'drm-nouveau-next' of git://anongit.freedesktop.org/git/nouveau/linux-2.6 into drm-next

more fixes for nouveau.

* 'drm-nouveau-next' of git://anongit.freedesktop.org/git/nouveau/linux-2.6:
  drm/nouveau: resume display if any later suspend bits fail
  drm/nouveau: fix lock unbalance in nouveau_crtc_page_flip
  drm/nouveau: implement hooks for needed for drm vblank timestamping support
  drm/nouveau/disp: add a method to fetch info needed by drm vblank timestamping
  drm/nv50: fill in crtc mode struct members from crtc_mode_fixup

10 years agoMerge branch 'drm-next-3.14' of git://people.freedesktop.org/~agd5f/linux into drm...
Dave Airlie [Thu, 30 Jan 2014 00:24:56 +0000 (10:24 +1000)] 
Merge branch 'drm-next-3.14' of git://people.freedesktop.org/~agd5f/linux into drm-next

more radeon fixes

* 'drm-next-3.14' of git://people.freedesktop.org/~agd5f/linux:
  drm/radeon/dce8: workaround for atom BlankCrtc table
  drm/radeon/DCE4+: clear bios scratch dpms bit (v2)
  drm/radeon: set si_notify_smc_display_change properly
  drm/radeon: fix DAC interrupt handling on DCE5+
  drm/radeon: clean up active vram sizing
  drm/radeon: skip async dma init on r6xx
  drm/radeon/runpm: don't runtime suspend non-PX cards
  drm/radeon: add ring to fence trace functions
  drm/radeon: add missing trace point
  drm/radeon: fix VMID use tracking

10 years agodrm/nouveau: resume display if any later suspend bits fail
Ilia Mirkin [Thu, 23 Jan 2014 07:45:02 +0000 (02:45 -0500)] 
drm/nouveau: resume display if any later suspend bits fail

If either idling channels or suspending the fence were to fail, the
display would never be resumed. Also if a client fails, resume the fence
(not functionally important, but it would potentially leak memory).

See https://bugs.freedesktop.org/show_bug.cgi?id=70213

Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
10 years agodrm/nouveau: fix lock unbalance in nouveau_crtc_page_flip
Maarten Lankhorst [Wed, 29 Jan 2014 10:05:09 +0000 (11:05 +0100)] 
drm/nouveau: fix lock unbalance in nouveau_crtc_page_flip

Fixes a regression introduced by d5c1e84b3a130f0
"drm/nouveau: hold mutex while syncing to kernel channel".

Cc: stable@vger.kernel.org #3.13
Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
10 years agodrm/nouveau: implement hooks for needed for drm vblank timestamping support
Ben Skeggs [Thu, 14 Nov 2013 03:37:49 +0000 (13:37 +1000)] 
drm/nouveau: implement hooks for needed for drm vblank timestamping support

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
10 years agodrm/nouveau/disp: add a method to fetch info needed by drm vblank timestamping
Ben Skeggs [Thu, 14 Nov 2013 03:37:48 +0000 (13:37 +1000)] 
drm/nouveau/disp: add a method to fetch info needed by drm vblank timestamping

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
10 years agodrm/nv50: fill in crtc mode struct members from crtc_mode_fixup
Ben Skeggs [Fri, 24 Jan 2014 00:13:23 +0000 (10:13 +1000)] 
drm/nv50: fill in crtc mode struct members from crtc_mode_fixup

The DRM uses the adjusted mode to calculate constants for vblank
timestamping.  Our encoder mode_fixup (usually) replaces this data
with our backend mode information, which doesn't have the needed
data filled in already.

Reported-by: Mario Kleiner mario.kleiner.de@gmail.com
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
10 years agodrm/i915: Kerneldoc for i915_gem_evict.c
Daniel Vetter [Wed, 29 Jan 2014 21:07:11 +0000 (22:07 +0100)] 
drm/i915: Kerneldoc for i915_gem_evict.c

Request by Ben Widawsky in his review of a patch touching this code.

v2: Clarify the disdinction between evicting vmas (to free up virtual
address space) and evicting objects (to free up actual system memory).
Suggested by Ben.

Cc: Ben Widawsky <benjamin.widawsky@intel.com>
Acked-by: Ben Widawsky <benjamin.widawsky@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/radeon/dce8: workaround for atom BlankCrtc table
Alex Deucher [Wed, 29 Jan 2014 04:49:37 +0000 (23:49 -0500)] 
drm/radeon/dce8: workaround for atom BlankCrtc table

Some DCE8 boards have a funky BlankCrtc table that results
in a timeout when trying to blank the display.  The
timeout is harmless (all operations needed from the table
are complete), but wastes time and is confusing to users so
work around it.

bug:
https://bugs.freedesktop.org/show_bug.cgi?id=73420

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
10 years agodrm/radeon/DCE4+: clear bios scratch dpms bit (v2)
Alex Deucher [Mon, 27 Jan 2014 23:29:35 +0000 (18:29 -0500)] 
drm/radeon/DCE4+: clear bios scratch dpms bit (v2)

The BlankCrtc table in some DCE8 boards has some
logic shortcuts for the vbios when this bit is set.
Clear it for driver use.

v2: fix typo

Bug:
https://bugs.freedesktop.org/show_bug.cgi?id=73420

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
10 years agodrm/radeon: set si_notify_smc_display_change properly
Alex Deucher [Mon, 27 Jan 2014 18:04:56 +0000 (13:04 -0500)] 
drm/radeon: set si_notify_smc_display_change properly

This is effectively a revert of 4573388c92ee60b4ed72b8d95b73df861189988c.

Forcing a display active when there is none causes problems with
dpm on some SI boards which results in improperly initialized
dpm state and boot failures on some boards.  As for the bug commit
4573388c92ee tried to address, one can manually force the state to
high for better performance when using the card as a headless compute
node until a better fix is developed.

bugs:
https://bugs.freedesktop.org/show_bug.cgi?id=73788
https://bugs.freedesktop.org/show_bug.cgi?id=69395

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
cc: stable@vger.kernel.org

10 years agodrm/i915: VM eviction only targets address space not physical pages
Chris Wilson [Tue, 28 Jan 2014 18:08:38 +0000 (18:08 +0000)] 
drm/i915: VM eviction only targets address space not physical pages

During eviction, we are only considering how to free up space within the
current address space and not concerned with freeing up physical memory.
As such we need only skip nodes that pinned in the current VM and not
globally.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Ben Widawsky <benjamin.widawsky@intel.com>
Reviewed-by: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/radeon: fix DAC interrupt handling on DCE5+
Alex Deucher [Mon, 27 Jan 2014 16:54:44 +0000 (11:54 -0500)] 
drm/radeon: fix DAC interrupt handling on DCE5+

DCE5 and newer hardware only has 1 DAC.  Use the correct
offset.  This may fix display problems on certain board
configurations.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
10 years agodrm/radeon: clean up active vram sizing
Alex Deucher [Mon, 27 Jan 2014 16:26:33 +0000 (11:26 -0500)] 
drm/radeon: clean up active vram sizing

If we are not able to properly initialize one of the gpu
engines for buffer paging, we limit vram to the size of
the cpu visible aperture.  We generally either use the gfx
or dma engine to do this.  Clean up the size limiting code
to only adjust the size based on what ring is selected
for buffer paging rather than making assumptions about which
engine is selected for paging.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
10 years agodrm/radeon: skip async dma init on r6xx
Alex Deucher [Mon, 27 Jan 2014 15:59:51 +0000 (10:59 -0500)] 
drm/radeon: skip async dma init on r6xx

The hw is buggy and it's not currently used, but it's
currently still initialized by the driver.  Skip the init.
Skipping init also seems to improve stability with dpm on
some r6xx asics.

bug:
https://bugs.freedesktop.org/show_bug.cgi?id=66963

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
10 years agodrm/radeon/runpm: don't runtime suspend non-PX cards
Alex Deucher [Fri, 24 Jan 2014 19:59:42 +0000 (14:59 -0500)] 
drm/radeon/runpm: don't runtime suspend non-PX cards

Prevent runtime suspend of non-PX GPUs.  Runtime suspend is
not what we want in those cases.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
10 years agodrm/radeon: add ring to fence trace functions
Christian König [Thu, 23 Jan 2014 13:24:17 +0000 (14:24 +0100)] 
drm/radeon: add ring to fence trace functions

Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 years agodrm/radeon: add missing trace point
Christian König [Thu, 23 Jan 2014 13:24:16 +0000 (14:24 +0100)] 
drm/radeon: add missing trace point

Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 years agodrm/radeon: fix VMID use tracking
Christian König [Thu, 23 Jan 2014 13:24:15 +0000 (14:24 +0100)] 
drm/radeon: fix VMID use tracking

Otherwise we allocate a new VMID on nearly every submit.

Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
10 years agodrm/i915: fix initial timestamps for PP sequencing logic
Imre Deak [Wed, 29 Jan 2014 11:25:41 +0000 (13:25 +0200)] 
drm/i915: fix initial timestamps for PP sequencing logic

The initial jiffies value can be non-0, so set the inital panel power
sequencer timestamps accordingly. This didn't cause a problem on 64 bit
machines but on 32 bit jiffies is initially -300*HZ, so if the panel
power is initally off in the call from edp_panel_vdd_on()->
wait_panel_power_cycle() we'd wait up to ~300 sec more than needed.

Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/i915: fix wait_remaining_ms_from_jiffies
Imre Deak [Wed, 29 Jan 2014 11:25:40 +0000 (13:25 +0200)] 
drm/i915: fix wait_remaining_ms_from_jiffies

schedule_timeout_uninterruptible() takes jiffies not ms.

v2:
- ignore the overflow issue, the practical part of that should
  be solved instead in the caller (Chris)

Note that this issue was introduced in

commit dce56b3c626fb1d533258a624d42a1a3fc17da17
Author: Paulo Zanoni <paulo.r.zanoni@intel.com>
Date:   Thu Dec 19 14:29:40 2013 -0200

drm/i915: save some time when waiting the eDP timings

I've accidentally merged the broken v4 version of the patch (where
Jani noticed the issue [1]) instead of the v5, which was fixed [2].

[1] http://mid.gmane.org/87fvpnkgyg.fsf@intel.com
[2] http://mid.gmane.org/1388778311-2020-1-git-send-email-przanoni@gmail.com

Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
[danvet: Add admission of incompetence in the form of a note.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/i915: Disable/Enable PM Intrrupts based on the current freq.
Deepak S [Mon, 27 Jan 2014 16:05:05 +0000 (21:35 +0530)] 
drm/i915: Disable/Enable PM Intrrupts based on the current freq.

When current delay is already at max delay, Let's disable the PM UP
THRESHOLD INTRRUPTS, so that we will not get further interrupts until
current delay is less than max delay, Also request for the PM DOWN
THRESHOLD INTRRUPTS to indicate the decrease in clock freq. and
viceversa for PM DOWN THRESHOLD INTRRUPTS.

v2: Use bool variables (Daniel)

v3: Fix Interrupt masking bit (Deepak)

v4: Use existing symbolic constants in i915_reg.h (Daniel)

v5: Add pm interrupt mask after new_delay calculation (Ville)

Signed-off-by: Deepak S <deepak.s@intel.com>
[danvet: Pass new_delay by value as suggested by Ville. Also appease
checkpatch.]
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agoRevert "drm/i915: set conservative clock gating values on VLV v2"
Ville Syrjälä [Wed, 22 Jan 2014 19:33:04 +0000 (21:33 +0200)] 
Revert "drm/i915: set conservative clock gating values on VLV v2"

We're disabling a boatload of clock gating features on VLV. Maybe these
days we don't need to do that. At least I'm not aware of any workarounds
with this level of paranoia.

This reverts commit 4e8c84a5b14bbb5b88c63941f1d939560f4abd0b.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/i915: Clarify WaDisable4x2SubspanOptimization situation for VLV
Ville Syrjälä [Wed, 22 Jan 2014 19:33:03 +0000 (21:33 +0200)] 
drm/i915: Clarify WaDisable4x2SubspanOptimization situation for VLV

WaDisable4x2SubspanOptimization isn't listed for VLV in the workaround
database, but BSpec says that the relevant bit must be set. Add a
comment to remind people of this.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/i915: VLV wants WaVSThreadDispatchOverride too
Ville Syrjälä [Wed, 22 Jan 2014 19:33:01 +0000 (21:33 +0200)] 
drm/i915: VLV wants WaVSThreadDispatchOverride too

Call gen7_setup_fixed_func_scheduler() on VLV as well.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/i915: Don't apply WaVSThreadDispatchOverride on HSW
Ville Syrjälä [Wed, 22 Jan 2014 19:33:00 +0000 (21:33 +0200)] 
drm/i915: Don't apply WaVSThreadDispatchOverride on HSW

BSpec states that the thread override values set by
gen7_setup_fixed_func_scheduler() are invalid for HSW. So let's not
muck around with them.

Since gen7_setup_fixed_func_scheduler() now has two totally independent
parts, one for IVB and one for HSW, move the HSW part directly into
haswell_init_clock_gating().

Note tht there's another workaround by the name of
WaHSWVSRefCountFullforceMissDisable which basically claims that later
steppings don't need the fix, but since WaVSRefCountFullforceMissDisable
is listed to be needed for all steppings play it safe and keep applying
the workaround.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/i915: gen7_setup_fixed_func_scheduler() actually implements WaVSThreadDispatchOve...
Ville Syrjälä [Wed, 22 Jan 2014 19:32:59 +0000 (21:32 +0200)] 
drm/i915: gen7_setup_fixed_func_scheduler() actually implements WaVSThreadDispatchOverride

The current comments indicate that this function implements
WaVSRefCountFullforceMissDisable, which is only true for HSW.
The original purpose of the function is to implement
WaVSThreadDispatchOverride (and a bit more). Fix up the comments
to match reality.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/i915: Drop WaDisableTDLUnitClockGating:vlv
Ville Syrjälä [Wed, 22 Jan 2014 19:32:58 +0000 (21:32 +0200)] 
drm/i915: Drop WaDisableTDLUnitClockGating:vlv

WaDisableTDLUnitClockGating is only relevant for early steppings of VLV.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/i915: Drop WaDisableVDSUtnitClockGating:vlv
Ville Syrjälä [Wed, 22 Jan 2014 19:32:57 +0000 (21:32 +0200)] 
drm/i915: Drop WaDisableVDSUtnitClockGating:vlv

WaDisableVDSUtnitClockGating was only relevant for early steepings of
VLV.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agoMerge tag 'drm/for-3.14-rc1-20140123' of git://anongit.freedesktop.org/tegra/linux...
Dave Airlie [Wed, 29 Jan 2014 02:03:56 +0000 (12:03 +1000)] 
Merge tag 'drm/for-3.14-rc1-20140123' of git://anongit.freedesktop.org/tegra/linux into drm-next

drm/tegra: Changes for v3.14-rc1 (update)

These patches fix some issues caused by the DRM panel support from the
previous pull request and add two more panels (for the Toshiba AC100 as
well as the Seaboard and Ventana).

* tag 'drm/for-3.14-rc1-20140123' of git://anongit.freedesktop.org/tegra/linux:
  drm/tegra: Obtain head number from DT
  drm/panel: update EDID BLOB in panel_simple_get_modes()
  gpu: host1x: Remove unnecessary include
  drm/tegra: Use proper data type
  drm/tegra: Clarify how panel modes override others
  drm/tegra: Fix possible CRTC mask for RGB outputs
  drm/i915: Use drm_encoder_crtc_ok()
  drm: Move drm_encoder_crtc_ok() to core
  drm: provide a helper for the encoder possible_crtcs mask
  drm/tegra: Don't check resource with devm_ioremap_resource()
  drm/panel: Add support for Chunghwa CLAA101WA01A panel
  drm/panel: Add support for Samsung LTN101NT05 panel

10 years agodrm: ast,cirrus,mgag200: use drm_can_sleep
Dave Airlie [Thu, 23 Jan 2014 23:50:18 +0000 (09:50 +1000)] 
drm: ast,cirrus,mgag200: use drm_can_sleep

these 3 were checking in_interrupt but we have situations where
calling vunmap under this could cause a BUG to be hit in
smp_call_function_many. Use the drm_can_sleep macro instead,
which should stop this path from been taken in this case.

Cc: stable@vger.kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
10 years agoMerge tag 'drm-intel-fixes-2014-01-28' of git://people.freedesktop.org/~danvet/drm...
Dave Airlie [Wed, 29 Jan 2014 00:21:39 +0000 (10:21 +1000)] 
Merge tag 'drm-intel-fixes-2014-01-28' of git://people.freedesktop.org/~danvet/drm-intel into drm-next

Pile of -fixes all over the place. Lot's of cc: stable.

Only big thing is that we've dropped the preliminary hw support tag for
bdw - it seems to work. Which also means that I'll shovel a few more bdw
patches through -fixes, there's 5 w/a patches from Ken already on
intel-gfx.

* tag 'drm-intel-fixes-2014-01-28' of git://people.freedesktop.org/~danvet/drm-intel:
  drm/i915: Fix the offset issue for the stolen GEM objects
  drm/i915: Decouple GPU error reporting from ring initialisation
  i915: remove pm_qos request on error
  Revert "drm/i915: Mask reserved bits in display/sprite address registers"
  drm/i915: VLV2 - Fix hotplug detect bits
  drm/i915: Allow reading the TIMESTAMP register on Gen8.
  drm/i915: Repeat evictions whilst pageflip completions are outstanding
  drm/i915: Wait for completion of pending flips when starved of fences
  drm/i915: don't disable DP port after a failed link training
  drm/i915: don't disable the DP port if the link is lost
  drm/i915: Eliminate lots of WARNs when there's no backlight present
  drm/i915: g4x/vlv: fix dp aux interrupt mask
  drm/i915/ppgtt: Defer request freeing on reset
  i915: send D1 opregion notification
  drm/i915/bdw: remove preliminary_hw_support flag from BDW
  drm/i915: Tune down reset_stat output from ERROR to debug
  drm/i915: Make semaphore modparam RO
  drm/i915: Fix disabled semaphores
  drm/i915: Clarify relocation errnos
  drm/i915: Spelling s/auxilliary/auxiliary/

10 years agoMerge branch 'drm-armada-fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-cubox into...
Dave Airlie [Tue, 28 Jan 2014 23:38:32 +0000 (09:38 +1000)] 
Merge branch 'drm-armada-fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-cubox into drm-next

Just one-liner which corrects a select statement for DRM_KMS_FB_HELPER
which looks like it was missed in the initial merge.  Based on 3.13.

* 'drm-armada-fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-cubox: (55 commits)
  DRM: armada: fix missing DRM_KMS_FB_HELPER select

10 years agoMerge tag 'omapdrm-3.14' of git://git.kernel.org/pub/scm/linux/kernel/git/tomba/linux...
Dave Airlie [Tue, 28 Jan 2014 23:37:47 +0000 (09:37 +1000)] 
Merge tag 'omapdrm-3.14' of git://git./linux/kernel/git/tomba/linux into drm-next

omapdrm patches for 3.14

* tag 'omapdrm-3.14' of git://git.kernel.org/pub/scm/linux/kernel/git/tomba/linux:
  drm/omap: Enable DT support for DMM
  drm/omap: fix: change dev_unload order
  drm/omap: fix: disable encoder before destroying it
  drm/omap: fix: disconnect devices when omapdrm module is removed
  drm/omap: fix: Defer probe if an omapdss device requests for it at connect
  drm/omap: fix (un)registering irqs inside an irq handler

Conflicts:
drivers/gpu/drm/omapdrm/omap_drv.c

10 years agoMerge branch 'gma500-next' of git://github.com/patjak/drm-gma500 into drm-next
Dave Airlie [Tue, 28 Jan 2014 23:35:48 +0000 (09:35 +1000)] 
Merge branch 'gma500-next' of git://github.com/patjak/drm-gma500 into drm-next

Only two patches this time around. One trivial and one locking fix.

* 'gma500-next' of git://github.com/patjak/drm-gma500:
  drm/gma500: Lock struct_mutex around cursor updates
  drivers: gpu: Mark function as static in cdv_intel_dp.c

10 years agodrm/i915: Add debugfs hooks for messign with watermark latencies
Ville Syrjälä [Wed, 22 Jan 2014 12:36:08 +0000 (14:36 +0200)] 
drm/i915: Add debugfs hooks for messign with watermark latencies

Add a few new debugfs files which allow changing the watermark memory
latency values during runtime. This can be used to determine the if the
original BIOS provided latency values are no good.

v2: Drop superfluous plane name from output
    Take modeset locks around the latency value read/write

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>
10 years agodrm/i915: Drop WaDisableRCPBUnitClockGating:vlv
Ville Syrjälä [Wed, 22 Jan 2014 19:32:56 +0000 (21:32 +0200)] 
drm/i915: Drop WaDisableRCPBUnitClockGating:vlv

Only early VLV steppings needed thist. Should no longer be relevant.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
10 years agodrm/i915: Drop WaApplyL3ControlAndL3ChickenMode:hsw
Ville Syrjälä [Wed, 22 Jan 2014 19:32:55 +0000 (21:32 +0200)] 
drm/i915: Drop WaApplyL3ControlAndL3ChickenMode:hsw

WaApplyL3ControlAndL3ChickenMode is only relevant to early HSW
steppings..

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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