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path: root/drivers/gpu/drm
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2010-11-10drm/ttm: Be consistent on ttm_bo_init() failuresThomas Hellstrom
Call destroy() on _all_ ttm_bo_init() failures, and make sure that behavior is documented in the function description. Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-11-10drm/radeon/kms: Fix retrying ttm_bo_init() after it failed once.Michel Dänzer
If ttm_bo_init() returns failure, it already destroyed the BO, so we need to retry from scratch. Signed-off-by: Michel Dänzer <daenzer@vmware.com> Tested-by: Markus Trippelsdorf <markus@trippelsdorf.de> Cc: stable@kernel.org Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-11-09drm/radeon/kms: fix thermal sensor reporting on rv6xxAlex Deucher
Temperature is not shifted as on newer asics. Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Cc: stable@kernel.org Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-11-09drm/radeon/kms: fix bugs in ddc and cd path router codeTyson Whitehead
This is a follow on to: 2b5b1d7da9583484b3a9e7e375a90ca0e8ca07c2 (drm/radeon/kms: add support for clock/data path routers) That patch completed mux support for ddc and cd line routing between connectors. This patch fixes an indexing typo that was resulting in the atom bios router objects not always being walked, ensures the validity entries for the reused router structure are reset for every connector object walked, and corrects the masking operations used to update the mux control bits. Fixes: https://bugs.freedesktop.org/show_bug.cgi?id=31339 Signed-off-by: Tyson Whitehead <twhitehead@gmail.com> Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-11-09drm/radeon/kms: add support for clock/data path routersAlex Deucher
This is a follow on to: 26b5bc986423cf3887e09188cb662ed651c5374d (drm/radeon/kms: add support for router objects) That patch added support for systems that use a mux to control the ddc line routing between the connectors. This patch adds support for systems that use a mux to control the encoder clock and data path routing to the connectors. Should fix: https://bugs.freedesktop.org/show_bug.cgi?id=31339 Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-11-09drm: vmwgfx: fix information leak to userlandKulikov Vasiliy
Structure drm_vmw_fence_rep is copied to userland with field "pad64" uninitialized. It leads to leaking of contents of kernel stack memory. Signed-off-by: Vasiliy Kulikov <segooon@gmail.com> Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-11-09drivers/gpu: Use vzallocJoe Perches
Signed-off-by: Joe Perches <joe@perches.com> Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-11-09drm/vmwgfx: Fix oops on failing bo pinThomas Hellstrom
When bo pin failed during modesetting, vmwgfx would try to unref a non-existing buffer object. Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-11-09drm/ttm: Remove the CAP_SYS_ADMIN requirement for bo pinningThomas Hellstrom
This breaks vmwgfx non-root EGL clients and is a remnant from the TTM user-space interface. This test should be done in the driver. Replace the remaining placement test with a BUG_ON, since triggering it is a driver bug. Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-11-09drm/ttm: Make sure a sync object doesn't disappear while we use itThomas Hellstrom
The sync object may disappear as soon as we release the bo::lock, so take a reference on it while we use it. One option would be to call sync_object_flush() before releasing the bo::lock, but that would put an atomic requirement on that function. Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-11-09drm/radeon/kms: don't disable shared encoders on pre-DCE3 display blocksAlex Deucher
The A/B links aren't independantly useable on these blocks so when we disable the encoders, make sure to only disable the encoder when there is no connector using it. Should fix: https://bugs.freedesktop.org/show_bug.cgi?id=18564 Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Cc: stable@kernel.org Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-11-09drivers/gpu/drm: Update WARN usesJoe Perches
Coalesce long formats. Align arguments. Add missing newlines. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-11-09drivers/gpu/drm/vmwgfx: Fix k.alloc switched argumentsJoe Perches
Signed-off-by: Joe Perches <joe@perches.com> Reviewed-by: Matt Turner <mattst88@gmail.com> Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-11-09DRM: ignore invalid EDID extensionsSam Tygier
Currently an invalid EDID extension will cause the whole EDID to be considered invalid. Instead just drop the invalid extensions, and return the valid ones. The base block is modified to claim to have the number valid extensions, and the check sum is updated. For my EIZO S2242W the base block is fine, but the extension block is all zeros. Without this patch I get no X and no VTs. Signed-off-by: Sam Tygier <samtygier@yahoo.co.uk> Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-11-09drm/radeon/kms: make the connector code less verboseAlex Deucher
Make more of the connector code debug only to avoid spamming the kernel logs with detect and add modes messages. Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-11-09drm/ttm: remove failed ttm binding error printoutThomas Hellstrom
The driver (for example vmwgfx) may want to silently deal with the error itself. Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-11-09drm/ttm: Add a barrier when unreservingThomas Hellstrom
Since we're doing this outside of a spinlock to provide the necessary barriers, add an explicit barrier. Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-11-09drm/ttm: Remove mm init error printouts and checksThomas Hellstrom
Replace with BUG_ON(). These error messages remained from the time when TTM was initialized from user-space. Nowadays hitting one of those is really a kernel bug. Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-11-09drm/ttm: Remove pointless list_empty checkThomas Hellstrom
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-11-09drm/ttm: Use private locks for the default bo range managerThomas Hellstrom
Searching for a free block in the range manager may in some situations be a lenghty operation, and we want to avoid holding the global lru lock during that time. Instead use a per-manager spinlock. This leaves the global lru lock for quick lru list and swap list manipulation only, including list manipulation associated with reserving buffer objects. Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-11-09drm/ttm: Documentation updateThomas Hellstrom
Remove an obsolete comment about mm nodes. Document the new bo range manager interface. Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-11-09drm/radeon/kms/evergreen: add missing pm.vblank_sync update in vbl handlerAlex Deucher
Should fix dynpm problems on evergreen boards Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-11-09Merge branch 'drm-intel-fixes' of ↵Dave Airlie
git://git.kernel.org/pub/scm/linux/kernel/git/ickle/drm-intel * 'drm-intel-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/ickle/drm-intel: drm/i915: Fix LVDS fixed-mode regression from 219adae1 drm/i915/ringbuffer: Use the HEAD auto-reporting mechanism drm/i915: Avoid might_fault during pwrite whilst holding our mutex agp/intel: fix cache control for sandybridge agp/intel: restore cache behavior on sandybridge drm/i915; Don't apply Ironlake FDI clock workaround to Sandybridge drm/i915: Fix KMS regression on Sandybridge/CPT i915: reprogram power monitoring registers on resume drm/i915: SNB BLT workaround drm/i915: Fix the graphics frequency clamping at init and when IPS is active. drm/i915: Allow powersave modparam to be adjusted at runtime. drm/i915: Apply big hammer to serialise buffer access between rings drm/i915: opregion_setup: iounmap correct address drm/i915: Flush read-only buffers from the active list upon idle as well i915: signedness bug in check_overlay_src() drm/i915: Fix typo from "Enable DisplayPort Audio"
2010-11-09drm/i915: Fix LVDS fixed-mode regression from 219adae1Chris Wilson
Commit 219adae1 cached the EDID found during LVDS init, but in the process prevented the init routine from discovering the preferred fixed-mode for the panel. This was causing us to guess the correct mode, which sometimes is wide of the mark. Reported-and-tested-by: Jon Masters <jonathan@jonmasters.org> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2010-11-08drm/i915/ringbuffer: Use the HEAD auto-reporting mechanismChris Wilson
My Sandybridge only reports 0 for the ring buffer registers, causing it to hang as soon as we exhaust the available ring. As a workaround, take advantage of our huge ring buffers and use the auto-reporting mechanism to update the status page with the HEAD location every 64 KiB. Cherry-picked from 6aa56062eaba67adfb247cded244fd877329588d. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=31404 Tested-by: Zhao Jian <jian.j.zhao@intel.com> Cc: stable@kernel.org Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2010-11-08drm/i915: Avoid might_fault during pwrite whilst holding our mutexChris Wilson
... and so prevent a potential circular reference: [ INFO: possible circular locking dependency detected ] 2.6.37-rc1-uwe1+ #4 ------------------------------------------------------- Xorg/1401 is trying to acquire lock: (&mm->mmap_sem){++++++}, at: [<c01e4ddb>] might_fault+0x4b/0xa0 but task is already holding lock: (&dev->struct_mutex){+.+.+.}, at: [<f869c3ac>] i915_mutex_lock_interruptible+0x3c/0x60 [i915] which lock already depends on the new lock. When the locking around the pwrite ioctl was simplified, I did not spot that the phys path never took any locks and so we introduced this potential circular reference. Reported-by: Uwe Helm <uwe.helm@googlemail.com> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2010-11-04drm/i915; Don't apply Ironlake FDI clock workaround to SandybridgeZhenyu Wang
Signed-off-by: Zhenyu Wang <zhenyu.z.wang@intel.com> Cc: stable@kernel.org Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2010-11-04drm/i915: Fix KMS regression on Sandybridge/CPTZhenyu Wang
We should enable FDI normal training on Sandybridge/CPT system as well. Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com> [ickle: removed unrelated chunks] Cc: stable@kernel.org Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2010-11-03i915: reprogram power monitoring registers on resumeKyle McMartin
Fixes issue where i915_gfx_val was reporting values several orders of magnitude higher than physically possible (without leaving scorch marks on my thighs at least.) Signed-off-by: Kyle McMartin <kyle@redhat.com> Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org> Cc: stable@kernel.org Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2010-11-02drm/i915: SNB BLT workaroundChris Wilson
On some stepping of SNB cpu, the first command to be parsed in BLT command streamer should be MI_BATCHBUFFER_START otherwise the GPU may hang. (cherry picked from commit 8d19215be8254f4f75e9c5a0d28345947b0382db) Conflicts: drivers/gpu/drm/i915/intel_ringbuffer.c drivers/gpu/drm/i915/intel_ringbuffer.h Signed-off-by: Zou Nan hai <nanhai.zou@intel.com> Cc: stable@kernel.org Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2010-11-02drm/i915: Fix the graphics frequency clamping at init and when IPS is active.Jesse Barnes
Part of the issue here was that Eric slipped in a debug hack for testing the i915 IPS code before the intel_ips.c driver had landed. This caused the driver to always use the full range of frequencies, which is only legal when IPS tells us we have the headroom. Once that hack was removed, there was confusion about the driver's frequency clamping variables: max_delay is the driver's current limit on the highest frequency the IPS driver wants us to use, while dev_priv->fmax is the hardware-reported limit that the IPS driver can increase up to. Tested with IPS driver loaded or not. Note that on Ironlake systems without the IPS driver loaded this will result in a performance reduction, and the inital warmup of frequency limits can impact benchmarking on systems with IPS loaded. Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Eric Anholt <eric@anholt.net> [ickle: demoted a debugging printk] Cc: stable@kernel.org Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2010-11-02drm/i915: Allow powersave modparam to be adjusted at runtime.Chris Wilson
2.6.36 appears to respect the 0400 mode we assigned to the parameter preventing it from being adjusted after loading. However, this is safe to adjust at runtime. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=31311 Reported-by: Fernando Lemos <fernandotcl@gmail.com> Cc: stable@kernel.org Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2010-11-01drm/i915: Apply big hammer to serialise buffer access between ringsChris Wilson
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: stable@kernel.org
2010-11-01drm/i915: opregion_setup: iounmap correct addressChristoph Fritz
In case of an opregion signature mismatch in intel_opregion_setup(), iounmap the correct address. Signed-off-by: Christoph Fritz <chf.fritz@googlemail.com> Cc: stable@kernel.org Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2010-10-28drm/i915: Flush read-only buffers from the active list upon idle as wellChris Wilson
It is possible for the active list to only contain a read-only buffer so that the ring->gpu_write_list remains entry. This leads to an inconsistency between i915_gpu_is_active() and i915_gpu_idle() causing an infinite spin during the shrinker and an assertion failure that i915_gpu_idle() does indeed flush all buffers from the active lists. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2010-10-27Merge branch 'drm-core-next' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6 * 'drm-core-next' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6: drm/radeon/kms: enable unmappable vram for evergreen drm/radeon/kms: fix tiled db height calculation on 6xx/7xx drm/radeon/kms: fix handling of tex lookup disable in cs checker on r2xx
2010-10-28drm/radeon/kms: enable unmappable vram for evergreenAlex Deucher
Evergreen now has blit support, but unmappable vram support was disabled in c919b371cb734f42b1130e706ecee262f8d9261d (drm/radeon/kms: avoid corner case issue with unmappable vram V2) due to merge ordering. This re-enables unmappable vram on evergreen. Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-10-28drm/radeon/kms: fix tiled db height calculation on 6xx/7xxAlex Deucher
Calculate height based on the slice bitfield rather than the size. Same as Dave's CB fix. Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-10-28drm/radeon/kms: fix handling of tex lookup disable in cs checker on r2xxAlex Deucher
There are cases when multiple texture units have to be enabled, but not actually used to sample. This patch checks to see if the lookup_disable bit is set and if so, skips the texture check. Fixes: https://bugs.freedesktop.org/show_bug.cgi?id=25544 Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Cc: stable@kernel.org Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-10-27i915: signedness bug in check_overlay_src()Dan Carpenter
"depth" should be signed in case packed_depth_bytes() returns -EINVAL. This probably doesn't make a difference at runtime. In the original code we would return -EINVAL later if (rec->offset_Y % 4294967274) is non-zero. Signed-off-by: Dan Carpenter <error27@gmail.com> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2010-10-27drm/i915: Fix typo from "Enable DisplayPort Audio"Takashi Iwai
Hi, while I looked through your changes in drm-intel git tree (as I've got a pressure for supporting DisplayPort audio), I stumbled on the possible bug in the commit a9756bb5b25d5d997df0c5d8c95db01292191bea Author: Zhenyu Wang <zhenyuw@linux.intel.com> Date: Sun Sep 19 13:09:06 2010 +0800 drm/i915: Enable DisplayPort audio In this commit, you changed the return value of g4x_dp_detect() to "bit", but it should be "status", I suppose. [ickle: mea culpa.] Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=31094 Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2010-10-26Merge branch 'drm-core-next' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6 * 'drm-core-next' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6: (476 commits) vmwgfx: Implement a proper GMR eviction mechanism drm/radeon/kms: fix r6xx/7xx 1D tiling CS checker v2 drm/radeon/kms: properly compute group_size on 6xx/7xx drm/radeon/kms: fix 2D tile height alignment in the r600 CS checker drm/radeon/kms/evergreen: set the clear state to the blit state drm/radeon/kms: don't poll dac load detect. gpu: Add Intel GMA500(Poulsbo) Stub Driver drm/radeon/kms: MC vram map needs to be >= pci aperture size drm/radeon/kms: implement display watermark support for evergreen drm/radeon/kms/evergreen: add some additional safe regs v2 drm/radeon/r600: fix tiling issues in CS checker. drm/i915: Move gpu_write_list to per-ring drm/i915: Invalidate the to-ring, flush the old-ring when updating domains drm/i915/ringbuffer: Write the value passed in to the tail register agp/intel: Restore valid PTE bit for Sandybridge after bdd3072 drm/i915: Fix flushing regression from 9af90d19f drm/i915/sdvo: Remove unused encoding member i915: enable AVI infoframe for intel_hdmi.c [v4] drm/i915: Fix current fb blocking for page flip drm/i915: IS_IRONLAKE is synonymous with gen == 5 ... Fix up conflicts in - drivers/gpu/drm/i915/{i915_gem.c, i915/intel_overlay.c}: due to the new simplified stack-based kmap_atomic() interface - drivers/gpu/drm/vmwgfx/vmwgfx_drv.c: added .llseek entry due to BKL removal cleanups.
2010-10-27vmwgfx: Implement a proper GMR eviction mechanismThomas Hellstrom
Use Ben's new range manager hooks to implement a manager for GMRs that manages ids rather than ranges. This means we can use the standard TTM code for binding, unbinding and eviction. Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-10-27drm/radeon/kms: fix r6xx/7xx 1D tiling CS checker v2Alex Deucher
broken by: drm/radeon/r600: fix tiling issues in CS checker. v2: only apply it to 1D tiling case. Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-10-26mm: stack based kmap_atomic()Peter Zijlstra
Keep the current interface but ignore the KM_type and use a stack based approach. The advantage is that we get rid of crappy code like: #define __KM_PTE \ (in_nmi() ? KM_NMI_PTE : \ in_irq() ? KM_IRQ_PTE : \ KM_PTE0) and in general can stop worrying about what context we're in and what kmap slots might be appropriate for that. The downside is that FRV kmap_atomic() gets more expensive. For now we use a CPP trick suggested by Andrew: #define kmap_atomic(page, args...) __kmap_atomic(page) to avoid having to touch all kmap_atomic() users in a single patch. [ not compiled on: - mn10300: the arch doesn't actually build with highmem to begin with ] [akpm@linux-foundation.org: coding-style fixes] [akpm@linux-foundation.org: fix up drivers/gpu/drm/i915/intel_overlay.c] Acked-by: Rik van Riel <riel@redhat.com> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Acked-by: Chris Metcalf <cmetcalf@tilera.com> Cc: David Howells <dhowells@redhat.com> Cc: Hugh Dickins <hughd@google.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Russell King <rmk@arm.linux.org.uk> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: David Miller <davem@davemloft.net> Cc: Paul Mackerras <paulus@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Dave Airlie <airlied@linux.ie> Cc: Li Zefan <lizf@cn.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-10-26drm/radeon/kms: properly compute group_size on 6xx/7xxAlex Deucher
Needed for tiled surfaces. Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Cc: stable@kernel.org Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-10-26drm/radeon/kms: fix 2D tile height alignment in the r600 CS checkerAlex Deucher
macro tile heights are aligned to num channels, not num banks. Noticed by Dave Airlie. Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Cc: stable@kernel.org Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-10-26drm/radeon/kms/evergreen: set the clear state to the blit stateAlex Deucher
The hw stores a default clear state for registers in the context range that can be initialized when the CP is set up. Set the blit state as the default clear state and use the CLEAR_STATE packet to load the blit state rather than loading it from an IB. This reduces overhead when doing bo moves using the 3D engine. Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-10-26drm/radeon/kms: don't poll dac load detect.Dave Airlie
This is slightly destructive, cpu intensive and can cause lockups. Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-10-26drm/radeon/kms: MC vram map needs to be >= pci aperture sizeAlex Deucher
The vram map in the radeon memory controller needs to be >= the pci aperture size. Fixes: https://bugs.freedesktop.org/show_bug.cgi?id=28402 The problematic cards in the above bug have 64 MB of vram, but the pci aperture is 128 MB and the MC vram map was only 64 MB. This can lead to hangs. Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Cc: stable@kernel.org Signed-off-by: Dave Airlie <airlied@redhat.com>
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