Kernel panic caused by list corruption in ltcg seems to indicate a
concurrency issue.

Take mutex of pfb like nv50_ram_put() to eliminate concurrency.

V2: Separate critical section into separate function, avoid taking the
    lock twice on NVC0
Signed-off-by: Roy Spliet <r.spliet@student.tudelft.nl>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

The current logic is wrong since we send fw->size >> 8 to the
card. Rounding the size up by 0x100 and 0x1000 didn't seem to help,
the card still hung, so go back to what the blob does -- 0x40000.
Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

The API allows up to 64-bits allocations, but size is handled as int
inside nouveau almost everywhere. Until this is fixed it's better to
prevent negative sizes.

The 256 kB before INT_MAX is paranoia, because of the large page
aligning below that could flip it above INT_MAX.
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

This prevents 100% cpu usage on fermi cards when the exit interrupt
from the secret scrubber is not acked.
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

The moves themselves were generally async to graphics previously, with
the exception that if the "main" channel is used to synchronise a
page flip at the same time, it can end up blocked for a noticable amount
of time for large buffer moves.

Not really critical, and there's better ways of handling this, but they
are all rather invasive, so this is fine for now.

Based on a patch by Maarten Lankhorst addressing the same issue.
Reported-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Acked-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>

calim didn't like 150 seconds timeout, so lower the timeout for him.
15 seconds should still be plenty.
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

This should no longer be required, and is harmful for framebuffer pinning.
Also add a warning if unpin causes the pin count to drop below 0.
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

Weren't critical previously, the buffers would go away anyway.  But with
recent changes to core drm/ttm lockdep will get pissed off now, so let's
fix it.
Reported-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Acked-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

b580c9e2 introduced additional problems
while trying to solve issues that became apparent while porting to the
new reservation stuff.

The major problem was that the the previously mentioned patch took the
client mutex earlier than previously, but the pinning of new_bo can
can potentially cause a buffer move, which would result in attempting to
acquire the same mutex again.

This commit attempts to fix that "fix".

Thanks to Maarten for the tips on keeping lockdep happy and cooking :)
Reported-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Acked-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>

"drm/nve0-/gr: some new gpc registers can have multiple copies"
5ee86c41 caused a regression for nvc0, because the bit indicating last
transfer has occured was no longer set, resulting in random system lockups.
Reported-by: Ronald Uitermark <ronald645@gmail.com>
Tested-by: Ronald Uitermark <ronald645@gmail.com>
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

Reported-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

This is the nva3 counterpart to commit beba44b1 (drm/nv84/disp: Fix
HDMI audio regression). The regression happened as a result of
refactoring in commit 8e9e3d2d (drm/nv84/disp: move hdmi control into
core).
Reported-and-tested-by: Max Baldwin <archerseven@gmail.com>
Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Cc: stable@vger.kernel.org

The commit

   commit 476e84e1
   Author: Ben Skeggs <bskeggs@redhat.com>
   Date:   Mon Feb 11 09:24:23 2013 +1000

       drm/nv50-/disp: initial supervisor support for off-chip encoders

changed the write mask in one of the interrupt functions for on-chip encoders,
causing a regression in certain VGA dual-head setups. This commit reintroduces
the mask thus resolving the regression

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=66129Reported-and-Tested-by: Yves-Alexis <corsac@debian.org>
Cc: stable@vger.kernel.org [3.9+]
CC: Ben Skeggs <bskeggs@redhat.com>
Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

Page tables on nv50 take 48kB, which can be hard to allocate in one piece.
Let's use vmalloc.
Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com>
Cc: stable@vger.kernel.org [3.7+]
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

NVC1/NVD9 are the only chipsets that should have anything different
happen on them after this.  We previously weren't doing these
register modifications, and NVIDIA do.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

This can be generalised and used on GK104 (probably even GF117), but lets
just make it work for now.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

GK110 exposes more than one, and needs to be dealt with in the ctxsw
ucode just like the TPC sets are.

Broadcast is at +0xe00.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

Generated context verified to be the same for all supported chipsets.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

Adds 3 features that UMS had to the KMS driver.
dynamic resizing - resizing remote-viewer makes guest resize
multiple crtcs - remote-viewer can access > 1 crtc.
suspend/resume/hibernate: guests can do suspend/resume/hibernate now.

* 'qxl-next' of git://people.freedesktop.org/~airlied/linux:
  qxl: use drm helper hotplug support
  qxl: add suspend/resume/hibernate support.
  qxl: add fb and ttm entry points for use by suspend/resume.
  qxl: add ring prep code for s/r
  qxl: prepare memslot code for suspend/resume
  qxl: split monitors_config object creation out.
  drm/qxl: set time on drawables from userspace
  drm/qxl: add support for > 1 output
  drm/qxl: make dynamic resizing work properly.

This uses the helper to deal with hotplug so fbdev gets included.
Signed-off-by: Dave Airlie <airlied@redhat.com>

This adds suspend/resume and hibernate support for the KMS driver. it evicts
all the objects, turns off the outputs, and waits for the hw to go idle,

On resume, it resets the memslots, rings, monitors object and forces modeset.
Signed-off-by: Dave Airlie <airlied@redhat.com>

This just ports some APIs like radeon uses to provide hooks for s/r to
call.
Signed-off-by: Dave Airlie <airlied@redhat.com>

This prepare the ring code for s/r additions, the release ring will need
reinitialising.
Signed-off-by: Dave Airlie <airlied@redhat.com>