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Commit Graph

1624 Commits

Author SHA1 Message Date
Dave Airlie
f7072e00f0 Merge remote branch 'nouveau/for-airlied' of ../drm-nouveau-next into drm-linus
* 'nouveau/for-airlied' of ../drm-nouveau-next:
  drm/nv50: fix vram ptes on IGPs to point at stolen system memory
  drm/nv50: fix instmem binding on IGPs to point at stolen system memory
  drm/nv50: improve vram page table construction
  drm/nv50: more efficient clearing of gpu page table entries
  drm/nv50: make nv50_mem_vm_{bind,unbind} operate only on vram
  drm/nouveau: Fix up pre-nv17 analog load detection.
2010-02-23 15:42:18 +10:00
Ben Skeggs
6c42966768 drm/nv50: fix vram ptes on IGPs to point at stolen system memory
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2010-02-23 13:50:24 +10:00
Ben Skeggs
76befb8c30 drm/nv50: fix instmem binding on IGPs to point at stolen system memory
This also modifies the unused PRAMIN PT entries to be all zeroes, can't
really recall why I used 9/0 initially, just that it didn't work for
some reason.  It was likely masking a bug elsewhere that's since been
fixed.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2010-02-23 13:50:21 +10:00
Ben Skeggs
531e77139f drm/nv50: improve vram page table construction
This commit changes nouveau to construct PTEs which look very much like
the ones the binary driver creates.

I presume that filling multiple PTEs identically with length flags and
the physical address of the start of a block of VRAM is a hint to the
memory controller that it need not perform additional page table lookups
for that range of addresses.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2010-02-23 13:50:03 +10:00
Ben Skeggs
4c27bd339d drm/nv50: more efficient clearing of gpu page table entries
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2010-02-23 13:49:58 +10:00
Ben Skeggs
66b6ebaccb drm/nv50: make nv50_mem_vm_{bind,unbind} operate only on vram
GART is handled elsewhere, no reason to have the code for it here too.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2010-02-23 13:41:16 +10:00
Francisco Jerez
e7e65caefd drm/nouveau: Fix up pre-nv17 analog load detection.
Signed-off-by: Francisco Jerez <currojerez@riseup.net>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2010-02-23 13:41:05 +10:00
Dave Airlie
635f1a3129 drm/radeon: bump the UMS driver version number to indicate rv740 fix
This lets UMS userspace know the rv740 fix is in. For KMS we can
consider the kernel release to be the v2.0.0 release so we don't need the
bump there.

Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-02-20 09:17:18 +10:00
Jerome Glisse
7d404c7b5f drm/radeon/kms: free fence IB if it wasn't emited at IB free time
If at IB free time fence wasn't emited that means the IB wasn't
scheduled because an error occured somewhere, thus we can free
then fence and mark the IB as free.

Signed-off-by: Jerome Glisse <jglisse@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-02-20 07:35:18 +10:00
Francisco Jerez
f0e2f38bef drm/ttm: fix caching problem on non-PAT systems.
http://bugzilla.kernel.org/show_bug.cgi?id=15328

This fixes a serious regression on AGP/non-PAT systems, where
pages were ending up in the wrong state and slowing down the
whole system.

[airlied: taken this from the bug as the other option is to revert
the change which caused it].

Tested-by: John W. Linville (in bug).
Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-02-20 07:30:15 +10:00
Alex Deucher
6a660f06e8 drm/radeon/rv740: fix backend setup
This patch fixes occlusion queries and rendering errors
on rv740 boards. Hardcoding the backend map is not an optimal
solution, but a better fix is being worked on.

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-02-20 07:28:16 +10:00
Alex Deucher
d3932d6c47 drm/radeon/kms: fix shared ddc detection
Just compare the i2c id since the i2c structs
may be slighly different.

Fixes fdo bug 26616.

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-02-20 07:28:06 +10:00
Alex Deucher
c86a903836 drm/radeon/kms/rs600: add connector quirk
rs600 board lists DVI port as HDMI.

Fixes fdo bug 26605

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-02-20 07:28:05 +10:00
Dave Airlie
6b15835282 Merge branch 'for-airlied' of git://git.freedesktop.org/git/nouveau/linux-2.6 into drm-linus
* 'for-airlied' of git://git.freedesktop.org/git/nouveau/linux-2.6:
  drm/nouveau: Force TV encoder DPMS reinit after resume.
  drm/nouveau: use mutex for vbios lock
2010-02-18 15:09:12 +10:00
Jerome Glisse
94429bb6c8 drm/radeon/kms: fix bo's fence association
Previous code did associate fence to bo before the fence was emited
and it also didn't lock protected access to ttm sync_obj member.
Both of this flaw leads to possible race between different code
path. This patch fix this by associating fence only once the fence
is emitted and properly lock protect access to sync_obj member of
ttm.

Fix:
https://bugs.freedesktop.org/show_bug.cgi?id=26438
and likely similar others bugs
Signed-off-by: Jerome Glisse <jglisse@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-02-18 15:07:04 +10:00
Jerome Glisse
91cb91becf drm/radeon/kms: fix indirect buffer management V2
There is 3 different distinct states for an indirect buffer (IB) :
  1- free with no fence
  2- free with a fence
  3- non free (fence doesn't matter)
Previous code mixed case 2 & 3 in a single one leading to possible
catastrophique failure. This patch rework the handling and properly
separate each case. So when you get ib we set the ib as non free and
fence status doesn't matter. Fence become active (ie has a meaning
for the ib code) once the ib is scheduled or free. This patch also
get rid of the alloc bitmap as it was overkill, we know go through
IB pool list like in a ring buffer as the oldest IB is the first
one the will be free.

Fix :
https://bugs.freedesktop.org/show_bug.cgi?id=26438
and likely other bugs.

V2 remove the scheduled list, it's useless now, fix free ib scanning

Signed-off-by: Jerome Glisse <jglisse@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-02-18 15:06:41 +10:00
Adam Jackson
b58db2c6dd drm/edid: Fix interlaced detailed timings to be frame size, not field.
cf. https://bugzilla.redhat.com/show_bug.cgi?id=533561

Signed-off-by: Adam Jackson <ajax@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-02-18 15:03:16 +10:00
Thomas Hellstrom
f2d12b8e2c drm/vmwgfx: Use fb handover mechanism instead of stealth mode.
When the vmwgfx module is loaded on top of vesafb, it would operate in
stealth mode in parallel with vesafb, evicting VRAM on dropmaster.

Change that to use the vesafb handover mechanism, like other drmfb drivers.

Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-02-18 15:01:59 +10:00
Dave Airlie
01d4503968 drm/radeon/kms: use udelay for short delays
For usec delays use udelay instead of scheduling, this should
allow reclocking to happen faster. This also was the cause
of reported 33s delays at bootup on certain systems.

fixes: freedesktop.org bug 25506

Cc: stable@kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-02-18 15:00:08 +10:00
Francisco Jerez
bf929efa56 drm/nouveau: Force TV encoder DPMS reinit after resume.
Signed-off-by: Francisco Jerez <currojerez@riseup.net>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2010-02-16 11:15:07 +10:00
Ben Skeggs
d9184fa97b drm/nouveau: use mutex for vbios lock
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2010-02-16 11:14:33 +10:00
Dave Airlie
e803e8b262 drm/radeon/kms: make sure retry count increases.
In testing I've never seen it go past 1 retry anyways but better
safe than sorry.

Reported by Droste on irc.

Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-02-15 15:24:48 +10:00
Matt Turner
ce36f00d59 drm/radeon/kms/atom: use get_unaligned_le32() for ctx->ps
Noticed on a DEC Alpha.

Start up into console mode caused 15 unaligned accesses, and starting X
caused another 48.

Signed-off-by: Matt Turner <mattst88@gmail.com>
CC: Jerome Glisse <jglisse@redhat.com>
CC: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-02-15 11:19:14 +10:00
Thomas Hellstrom
e22238ea37 drm/ttm: Fix a bug occuring when validating a buffer object in a range.
If the buffer object was already in the requested memory type, but
outside of the requested range it was never moved into the requested range.

Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-02-15 11:19:14 +10:00
Thomas Hellstrom
775c67090c drm: Fix a bug in the range manager.
When searching for free space in a range, the function could return a node extending outside of the given range.

Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-02-15 11:19:14 +10:00
Linus Torvalds
26b23ace8b Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/anholt/drm-intel
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/anholt/drm-intel:
  drm/i915: hold ref on flip object until it completes
  drm/i915: Fix crash while aborting hibernation
  drm/i915: Correctly return -ENOMEM on allocation failure in cmdbuf ioctls.
  drm/i915: fix pipe source image setting in flip command
  drm/i915: fix flip done interrupt on Ironlake
  drm/i915: untangle page flip completion
  drm/i915: handle FBC and self-refresh better
  drm/i915: Increase fb alignment to 64k
  drm/i915: Update write_domains on active list after flush.
  drm/i915: Rework DPLL calculation parameters for Ironlake
2010-02-12 09:32:10 -08:00
Dave Airlie
0a4583eb98 Merge branch 'drm-radeon-linus' of ../drm-next
* 'drm-radeon-linus' of ../drm-next:
  drm/radeon/kms: retry auxch on 0x20 timeout value.
  drm/radeon: Skip dma copy test in benchmark if card doesn't have dma engine.
  drm/radeon/kms: fix screen clearing before fbcon.
  drm/radeon/kms: add quirk for VGA without DDC on rv730 XFX card.
  drm/radeon/kms: don't crash if no DDC bus on VGA/DVI connector.
  drm/radeon/kms: change Kconfig text to reflect the new option.
  drm/radeon/kms: suspend and resume audio stuff
2010-02-11 14:03:51 +10:00
Dave Airlie
648ac05c4f drm/radeon/kms: retry auxch on 0x20 timeout value.
ATOM appears to return 0x20 which seems to mean some sort of timeout.

retry the transaction up to 10 times before failing, this
makes DP->VGA convertor we bought work at least a bit more predictably.

Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-02-11 14:03:18 +10:00
Pauli Nieminen
c60a284cc4 drm/radeon: Skip dma copy test in benchmark if card doesn't have dma engine.
radeon_copy_dma is only available for r200 or newer cards.
Call to radeon_copy_dma would result to NULL pointer
dereference if benchmarking asic without dma engine.

Signed-off-by: Pauli Nieminen <suokkos@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-02-11 13:13:25 +10:00
Dave Airlie
e8a47c10b2 Merge remote branch 'nouveau/for-airlied' of nouveau-2.6
* 'nouveau/for-airlied' of /home/airlied/kernel/drm-next:
  nouveau: fix state detection with switchable graphics
  drm/nouveau: move dereferences after null checks
  drm/nv50: make the pgraph irq handler loop like the pre-nv50 version
  drm/nv50: delete ramfc object after disabling fifo, not before
  drm/nv50: avoid unloading pgraph context when ctxprog is running
  drm/nv50: align size of buffer object to the right boundaries.
  drm/nv50: disregard dac outputs in nv50_sor_dpms()
  drm/nv50: prevent multiple init tables being parsed at the same time
  drm/nouveau: make dp auxch xfer len check for reads only
  drm/nv40: make INIT_COMPUTE_MEM a NOP, just like nv50
  drm/nouveau: Add proper vgaarb support.
  drm/nouveau: Fix fbcon on mixed pre-NV50 + NV50 multicard.
  drivers/gpu/drm/nouveau/nouveau_grctx.c: correct NULL test
  drm/nouveau: call ttm_bo_wait with the bo lock held to prevent hang
  drm/nouveau: Fixup semaphores on pre-nv50 cards.
  drm/nouveau: Add getparam to get available PGRAPH units.
  drm/nouveau: Add module options to disable acceleration.
  drm/nouveau: fix non-vram notifier blocks
2010-02-11 12:10:52 +10:00
Thomas Hellstrom
85b9e4878f drm/vmwgfx: Fix a circular locking dependency bug.
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-02-11 12:06:05 +10:00
Jakob Bornecrantz
a87897edba drm/vmwgfx: Drop scanout flag compat and add execbuf ioctl parameter members. Bumps major.
Even if this bumps the version to 1 it does not mean the driver is
out of staging. From what we know this is the last backwards
incompatible change to the driver.

Signed-off-by: Jakob Bornecrantz <jakob@vmware.com>
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-02-11 12:03:26 +10:00
Jakob Bornecrantz
3bef357210 drm/vmwgfx: Report propper framebuffer_{max|min}_{width|height}
Signed-off-by: Jakob Bornecrantz <jakob@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-02-11 11:58:33 +10:00
Thomas Hellstrom
f77cef3db3 drm/vmwgfx: Update the user-space interface.
When time-based throttling is implemented, we need to bump minor.
When the old way of detecting scanout is removed, we need to bump major.
In the meantime, this change should not break existing user-space.

Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: Jakob Bornecrantz <jakob@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-02-11 11:58:09 +10:00
Jesse Barnes
75dfca80a6 drm/i915: hold ref on flip object until it completes
This will prevent things from falling over if the user frees the flip
buffer before we complete the flip, since we'll hold an internal
reference.

Reported-by: Kristian Høgsberg <krh@bitplanet.net>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Eric Anholt <eric@anholt.net>
2010-02-10 17:34:46 -08:00
Rafael J. Wysocki
84b79f8d28 drm/i915: Fix crash while aborting hibernation
Commit cbda12d77e (drm/i915: implement
new pm ops for i915) introduced the problem that if s2disk hibernation
is aborted, the system will crash, because i915_pm_freeze() does
nothing, while it should at least reverse some operations carried out
by i915_suspend().

Fix this issue by splitting the i915 suspend into a freeze part a
suspend part, where the latter is not executed before creating a
hibernation image, and the i915 resume into a "low-level" resume part
and a thaw part, where the former is not executed after the image has
been created.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Tested-by: Alan Jenkins <alan-jenkins@tuffmail.co.uk>
Signed-off-by: Eric Anholt <eric@anholt.net>
2010-02-10 17:34:33 -08:00
Dave Airlie
6719fc663c drm/radeon/kms: fix screen clearing before fbcon.
This memset_io was added to debug something way back and got
left behind, memset the fb to black so the borders don't be all white.

Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-02-11 11:25:27 +10:00
Matthew Garrett
13876c6e5f nouveau: fix state detection with switchable graphics
Signed-off-by: Matthew Garrett <mjg@redhat.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2010-02-11 09:52:02 +10:00
Marcin Slusarz
dd19e44b28 drm/nouveau: move dereferences after null checks
Reported-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com>
Signed-off-by: Maarten Maathuis <madman2003@gmail.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2010-02-11 09:52:00 +10:00
Owain Ainsworth
a40e8d3139 drm/i915: Correctly return -ENOMEM on allocation failure in cmdbuf ioctls.
Signed-off-by: Owain G. Ainsworth <oga@openbsd.org>
Signed-off-by: Eric Anholt <eric@anholt.net>
2010-02-10 15:08:00 -08:00
Zhenyu Wang
aacef09b59 drm/i915: fix pipe source image setting in flip command
The MI_DISPLAY_FLIP command needs to be set the same pipe
source image like in pipe source register, e.g source image
size minus one. This fixes screen corrupt issue on Ironlake.

Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
2010-02-10 14:50:38 -08:00
Zhenyu Wang
f072d2e771 drm/i915: fix flip done interrupt on Ironlake
On Ironlake plane flip interrupt means flip done event already, the
behavior is not like old chips, and perform like other usual interrupt.
So only need to handle flip done event when receiving that interrupt.

Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
2010-02-10 14:34:13 -08:00
Jesse Barnes
b1b87f6b65 drm/i915: untangle page flip completion
When a new page flip is requested, we need to both queue an unpin for
the current framebuffer, and also increment the flip pending count on
the newly submitted buffer.

At flip finish time, we need to unpin the old fb and decrement the flip
pending count on the new buffer.

The old code was conflating the two, and led to hangs when new direct
rendered apps were started, replacing the existing frame buffer.  This
patch splits out the buffers and prevents the hangs.

Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Kristian Høgsberg <krh@bitplanet.net>
Signed-off-by: Eric Anholt <eric@anholt.net>
2010-02-10 14:33:04 -08:00
Jesse Barnes
ee25df2bc3 drm/i915: handle FBC and self-refresh better
On 945, we need to avoid entering self-refresh if the compressor is
busy, or we may cause display FIFO underruns leading to ugly flicker.

Fixes fdo bug #24314, kernel bug #15043.

Tested-by: Alexander Lam <lambchop468@gmail.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Tested-by: Julien Cristau <jcristau@debian.org> (fd.o #25371)
Cc: stable@kernel.org
Signed-off-by: Eric Anholt <eric@anholt.net>
2010-02-10 14:27:13 -08:00
Chris Wilson
fd2e8ea597 drm/i915: Increase fb alignment to 64k
An untiled framebuffer must be aligned to 64k. This is normally handled
by intel_pin_and_fence_fb_obj(), but the intelfb_create() likes to be
different and do the pinning itself. However, it aligns the buffer
object incorrectly for pre-i965 chipsets causing a PGTBL_ERR when it is
installed onto the output.

Fixes:
  KMS error message while initializing modesetting -
  render error detected: EIR: 0x10 [i915]
  http://bugs.freedesktop.org/show_bug.cgi?id=22936

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: stable@kernel.org
Signed-off-by: Eric Anholt <eric@anholt.net>
2010-02-10 13:41:29 -08:00
Daniel Vetter
99fcb766a3 drm/i915: Update write_domains on active list after flush.
Before changing the status of a buffer with a pending write we will await
upon a new flush for that buffer. So we can take advantage of any flushes
posted whilst the buffer is active and pending processing by the GPU, by
clearing its write_domain and updating its last_rendering_seqno -- thus
saving a potential flush in deep queues and improves flushing behaviour
upon eviction for both GTT space and fences.

In order to reduce the time spent searching the active list for matching
write_domains, we move those to a separate list whose elements are
the buffers belong to the active/flushing list with pending writes.

Orignal patch by Chris Wilson <chris@chris-wilson.co.uk>, forward-ported
by me.

In addition to better performance, this also fixes a real bug. Before
this changes, i915_gem_evict_everything didn't work as advertised. When
the gpu was actually busy and processing request, the flush and subsequent
wait would not move active and dirty buffers to the inactive list, but
just to the flushing list. Which triggered the BUG_ON at the end of this
function. With the more tight dirty buffer tracking, all currently busy and
dirty buffers get moved to the inactive list by one i915_gem_flush operation.

I've left the BUG_ON I've used to prove this in there.

References:
  Bug 25911 - 2.10.0 causes kernel oops and system hangs
  http://bugs.freedesktop.org/show_bug.cgi?id=25911

  Bug 26101 - [i915] xf86-video-intel 2.10.0 (and git) triggers kernel oops
              within seconds after login
  http://bugs.freedesktop.org/show_bug.cgi?id=26101

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Tested-by: Adam Lantos <hege@playma.org>
Cc: stable@kernel.org
Signed-off-by: Eric Anholt <eric@anholt.net>
2010-02-10 13:31:45 -08:00
Zhenyu Wang
b91ad0ec52 drm/i915: Rework DPLL calculation parameters for Ironlake
Got Ironlake DPLL parameter table, which reflects the hardware
optimized values. So this one trys to list DPLL parameters for
different output types, should potential fix clock issue seen
on new Arrandale CPUs.

This fixes DPLL setting failure on one 1920x1080 dual channel
LVDS for Ironlake. Test has also been made on LVDS panels with
smaller size and CRT/HDMI/DP ports for different monitors on
their all supported modes.

Update:
- Change name of double LVDS to dual LVDS.
- Fix SSC 120M reference clock to use the right range.

Cc: CSJ <changsijay@gmail.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
2010-02-10 13:05:57 -08:00
Maarten Maathuis
b1d37aa0aa drm/nv50: make the pgraph irq handler loop like the pre-nv50 version
Unset the bit that indicates that a ctxprog can continue at the end.

Signed-off-by: Maarten Maathuis <madman2003@gmail.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2010-02-10 08:19:39 +10:00
Maarten Maathuis
a87ff62a80 drm/nv50: delete ramfc object after disabling fifo, not before
ramfc is zero'ed upon destruction, so it's safer to do things in the right
order.

Signed-off-by: Maarten Maathuis <madman2003@gmail.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2010-02-10 08:19:38 +10:00
Maarten Maathuis
a51a3bf50d drm/nv50: avoid unloading pgraph context when ctxprog is running
- We need to disable pgraph fifo access before checking the current channel,
  otherwise we could still hit a running ctxprog.
- The writes to 0x400500 are already handled by pgraph->fifo_access and are
  therefore redundant, moreover pgraph fifo access should not be reenabled
  before current context is set as invalid. So remove them altogether.

Signed-off-by: Maarten Maathuis <madman2003@gmail.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2010-02-10 08:19:36 +10:00