Exynos is a DT-only platform. Add this info to Kconfig.
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
To address the case where physically contiguous memory
MAY NOT be a mandatory requirement for framebuffer for
the application calling exynos_drm_gem_dumb_create,
the patch adds a feature to get non physically contiguous
memory for framebuffer, if physically contiguous memory
allocation fails and if IOMMU is supported.
Signed-off-by: Vikas Sajjan <vikas.sajjan@linaro.org>
Signed-off-by: Arun Kumar <arun.kk@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
The patch moves platfrom_data and device tree parsing
to separate function.
Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
The patch adds code to get signal polarization setting
from device tree display-timings node.
Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
The patch replaces all occurrences of struct fb_videomode by
more accurate struct videomode. The change allows to remove
mode conversion function and simplifies clock divider calculation.
Clock configuration is moved to separate function.
Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
This patch checks if a requested window supports alpha channel or not.
In case of s3c64xx, window 0 doesn't support alpha channel so if
the request pixel format is ARGB8888 then change it to XRGB8888.
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Reviewed-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
This patch fixes wrong pixel format setting.
A pixel format is decided according to bpp and depth, or user-requested
format but fimd driver considered only bpp value to decide a proper pixel
format. So this patch makes a proper pixel format to be set according
to drm_framebuffer's pixel_format which is set by addfb with bpp and
depth, or addfb2 with user-requested format.
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Reviewed-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
The exynos4 platform is only dt-based since 3.10, we should convert driver data
and ids to dt-based parsing methods. The rotator driver has a limit table to get
size limit of input picture. Each SoCs has slightly different limit value
compared with any others.
For example, exynos4210's max_size of RGB888 is 16k x 16k. But, others have
8k x 8k. Another example the exynos5250 should have multiple of 2 pixel size
for its X/Y axis. Thus, we should keep different tables for each of them.
This patch also includes desciptions of each nodes for the rotator and specifies
a example how to bind it.
Signed-off-by: Chanho Park <chanho61.park@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Ensure that all externally accessed functions are correctly prototyped
when defined in each file by making sure the headers with the protoypes
are included in the file with the definition.
Signed-off-by: Mark Brown <broonie@linaro.org>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
This patch makes g2d power domain and clock to be controlled
through pm runtime interfaces instead of controlling them
respectively.
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
While trying to get boot-logo up on exynos5420 SMDK which has eDP panel
connected with resolution 2560x1600, following error occured even with
IOMMU enabled:
[0.880000] [drm:lowlevel_buffer_allocate] *ERROR* failed to allocate buffer.
[0.890000] [drm] Initialized exynos 1.0.0 20110530 on minor 0
To address the cases where physically contiguous memory MAY NOT be a
mandatory requirement for fb, the patch adds a feature to get non physically
contiguous memory for fb if physically contiguous memory allocation fails
and if IOMMU is supported.
Signed-off-by: Vikas Sajjan <vikas.sajjan@linaro.org>
Signed-off-by: Arun Kumar <arun.kk@samsung.com>
Reviewed-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
up with PTR_ERR_OR_ZERO(), and replacing or fixing all the usages.
This has been sitting in linux-next for a whole cycle.
Thanks,
Rusty.
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Merge tag 'PTR_RET-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux
Pull PTR_RET() removal patches from Rusty Russell:
"PTR_RET() is a weird name, and led to some confusing usage. We ended
up with PTR_ERR_OR_ZERO(), and replacing or fixing all the usages.
This has been sitting in linux-next for a whole cycle"
[ There are still some PTR_RET users scattered about, with some of them
possibly being new, but most of them existing in Rusty's tree too. We
have that
#define PTR_RET(p) PTR_ERR_OR_ZERO(p)
thing in <linux/err.h>, so they continue to work for now - Linus ]
* tag 'PTR_RET-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux:
GFS2: Replace PTR_RET with PTR_ERR_OR_ZERO
Btrfs: volume: Replace PTR_RET with PTR_ERR_OR_ZERO
drm/cma: Replace PTR_RET with PTR_ERR_OR_ZERO
sh_veu: Replace PTR_RET with PTR_ERR_OR_ZERO
dma-buf: Replace PTR_RET with PTR_ERR_OR_ZERO
drivers/rtc: Replace PTR_RET with PTR_ERR_OR_ZERO
mm/oom_kill: remove weird use of ERR_PTR()/PTR_ERR().
staging/zcache: don't use PTR_RET().
remoteproc: don't use PTR_RET().
pinctrl: don't use PTR_RET().
acpi: Replace weird use of PTR_RET.
s390: Replace weird use of PTR_RET.
PTR_RET is now PTR_ERR_OR_ZERO(): Replace most.
PTR_RET is now PTR_ERR_OR_ZERO
Suppress warning of unused-variables by adding a BUG()+return for invalid
audio-formats.
Cc: Rob Clark <robdclark@gmail.com>
Signed-off-by: David Herrmann <dh.herrmann@gmail.com>
Signed-off-by: Dave Airlie <airlied@gmail.com>
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Acked-by: Alex Deucher <Alexander.Deucher@amd.com>
Signed-off-by: Dave Airlie <airlied@gmail.com>
ironlake_fdi_compute_config() already checks that we have enough
FDI bandwidth. And it doesn't just use a hardcoded value but takes
into account factors such as the actual FDI frequency, shared FDI
B/C lanes, etc.
Suggested-by: Daniel Vetter <daniel@ffwll.ch>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
For DP pll settings, there is only two golden configs. Instead of
running through the algorithm to determine it, hardcode the value and get it
determine in intel_dp_set_clock.
v2: Rework on the intel_limit compiler warning. (Jani)
Signed-off-by: Chon Ming Lee <chon.ming.lee@intel.com>
[danvet: Fix up checkpatch issues.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
eDP 1.4 supports 4-5 extra link rates in additional to current 2 link
rate. Create a structure to store the DPLL divisor data to improve
readability.
v2: Fix the gen4_dpll/pch_dpll initialization to C99
designated initializers, and use a single loop for all platforms. (Jani and Daniel)
Signed-off-by: Chon Ming Lee <chon.ming.lee@intel.com>
[danvet: Fix up checkpatch warnings.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
The spec says to notify prior to power down and after power up. It is
unclear whether it makes a difference.
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Notifying the bios lets it enter power saving states.
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
The bios interface seems messy, and it's hard to tell what the bios
really wants. At first, only add support for DDI based machines (hsw+),
and see how it turns out.
The spec says to notify prior to power down and after power up. It is
unclear whether it makes a difference.
v2:
- squash notification function and callers patches together (Daniel)
- move callers to haswell_crtc_{enable,disable} (Daniel)
- rename notification function (Chris)
v3:
- separate notification function and callers again, as it's not clear
whether the display power state notification is the right thing to do
after all
v4: per Paulo's review:
- drop LVDS
- WARN on unsupported encoder types
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
In preparation for followup work.
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
SWSCI is a driver to bios call interface.
This checks for SWSCI availability and bios requested callbacks, and
filters out any calls that shouldn't happen. This way the callers don't
need to do the checks all over the place.
v2: silence some checkpatch nagging
v3: set PCI_SWSCI bit 0 to trigger interrupt (Mengdong Lin)
v4: remove an extra #define (Jesse)
v5: spec says s/w is responsible for clearing PCI_SWSCI bit 0 too
v6: per Paulo's review and more:
- fix sub-function mask
- add exit parameter
- add define for set panel details call
- return more errors from swsci
- clean up the supported/requested callbacks bit masks mess
- use DSLP for timeout
- fix build for CONFIG_ACPI=n
v7: tiny adjustment of requested vs. supported SBCB callbacks handling (Paulo)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
The comments were a little out-of-sequence with the code, forcing the
reader to jump around whilst reading. Whilst moving the comments around,
add one to explain the context reference.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
We use the request to ensure we hold a reference to the context for the
duration that it remains in use by the ring. Each request only holds a
reference to the current context, hence we emit a request after
switching contexts with the final reference to the old context. However,
the extra interrupt caused by that request is not useful (no timing
critical function will wait for the context object), instead the overhead
of servicing the IRQ shows up in some (lightweight) benchmarks. In order
to keep the useful property of using the request to manage the context
lifetime, we want to add a dummy request that is associated with the
interrupt from the subsequent real request following the batch.
The extra interrupt was added as a side-effect of using
i915_add_request() in
commit 112522f678
Author: Chris Wilson <chris@chris-wilson.co.uk>
Date: Thu May 2 16:48:07 2013 +0300
drm/i915: put context upon switching
v2: Daniel convinced me that the request here was solely for context
lifetime tracking and that we have the active ref to keep the object
alive whilst the MI_SET_CONTEXT. So the only concern then is which
context should get the blame for MI_SET_CONTEXT failing. The old scheme
added a request for the old context so that any hang upto and including
the switch away would mark the old context as guilty. Now any hang here
implicates the new context. However since we have already gone through a
complete flush with the last context in its last request, and all that
lies in no-man's-land is an invalidate flush and the MI_SET_CONTEXT, we
should be safe in not unduly placing blame on the new context.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Ben Widawsky <ben@bwidawsk.net>
Cc: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
The saga around the breadcrumb vmas used by execbuf continues ...
This time around we've managed to unconditionally move the object to
the unbound list on the last vma unbind even though it might never
have been on either the bound or unbound list. Hilarity ensued.
Chris Wilson tracked this one down but compared to his patches I've
simply opted to completely separate the unbound case for not-yet bound
vmas. Otherwise we imo end up with semantically hard to parse checks
around the list_move_tail(global_list, ...).
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Ben Widawsky <ben@bwidawsk.net>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=68462
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
We still maintain code internally that cares about preliminary support.
Leaving the check here doesn't hurt anyone, and should keep things more
in line.
This time around, stick the info in the intel_info structure, and also
change the error from DRM_ERROR->DRM_INFO.
This is a partial revert of:
commit 590e4df8c8
Author: Jesse Barnes <jbarnes@virtuousgeek.org>
Date: Wed May 8 10:45:15 2013 -0700
drm/i915: VLV support is no longer preliminary
Daniel, I'll provide the fix ups for internal too if/when you merge
this (if you want).
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Batchbuffers constructed by userspace can conditionalise their URB
allocations through the use of the MI_SET_PREDICATE command. This
command can read the MI_PREDICATE_RESULT_2 register to see how many
slices are enabled on GT3, and by virtue of the result, scale their
memory allocations to fit enabled memory.
Of course, this only works if the kernel sets the appropriate bit in the
register first.
v2: Better commit subject and message by Chris Wilson.
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Credits-to: Yejun Guo <yejun.guo@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@gmail.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This fixes a printf warn from gcc:
drivers/gpu/drm/i915/intel_dsi_cmd.c: In function ‘dsi_vc_send_long’:
drivers/gpu/drm/i915/intel_dsi_cmd.c:181:2: warning: format ‘%x’ expects argument of type ‘unsigned int’, but argument 7 has type ‘size_t’ [-Wformat=]
Suggested-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Initial parsing of the VBT MIPI block. For now, just store the panel id
if found.
Note: Again there seems to be no documentation for this piece of lore.
The doc situation for byt+ is just a bad joke :(
Signed-off-by: Shobhit Kumar <shobhit.kumar@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Note: No one seems to have docs for this, so this patch here is just
unreviewed black magic :(
Signed-off-by: Shobhit Kumar <shobhit.kumar@intel.com>
Signed-off-by: ymohanma <yogesh.mohan.marimuthu@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
[danvet: Add note about the doc situation.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
DPLL is not needed for DSI
v2: Rebase due to added DSI PLL assertion patch.
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Shobhit Kumar <shobhit.kumar@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
For DSI, we need to be asserting DSI PLL, not DPLL.
This is a somewhat stopgap implementation. It's slightly ugly to have to
pass the dsi parameter to intel_enable_pipe().
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
v2:
- Grab dpio_lock mutex in vlv_enable_dsi_pll().
- Add and call vlv_disable_dsi_pll().
v3: Mostly based on Ville's review comments.
- Only pipe A has DSI PLL lock bit.
- Add more of CCK REG bit definitions for DSI PLL.
- Make tables static.
- Move clock gating out of the clock calculation functions.
- DSI PLL LDO power gating.
- Put alternative MNP from table calc behind #ifdef.
v4: s/CKK/CLK/ in the CCK REG bit definitions (Ville).
Signed-off-by: ymohanma <yogesh.mohan.marimuthu@intel.com>
Signed-off-by: Shobhit Kumar <shobhit.kumar@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This does not include any panel specific sub-encoders yet.
v2: Fix fixed mode handling (Daniel)
v3: Mostly based on Ville's review comments.
- Fix MIPI_HS_TX_TIMEOUT.
- DPI_ENABLE only for video mode.
- Drop ULPS usage for now, use DEVICE_READY only.
- Set MIPI_INIT_COUNT based on txclkesc.
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Shobhit Kumar <shobhit.kumar@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
v2: Rebase due to register bit definition change.
v3: Mostly based on Ville's review comments.
- Use size_t for length all around.
- Reuse dsi_vc_send_short in dsi_vc_send_long.
- Remove stale/incorrect comments.
- Reverse special packet sent interrupt check.
- Use DSI controller regs for reading, not adapter.
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
The sub-encoder model is copied from DVO.
v2: Add attached_connector to struct intel_dsi.
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Add definitions for VLV MIPI DSI registers.
v2: Small fixes per Ville's review comments.
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
v2: Add comment this is pipe A only (Ville)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
For GPIO NC, CCK, CCU, and GPS CORE.
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Shobhit Kumar <shobhit.kumar@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Shobhit Kumar <shobhit.kumar@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Acked-by: Dave Airlie <airlied@gmail.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
A follow-on to the update of the LLC coherency logic is that we can rely
on the LLC being coherent with the CS for rewriting batchbuffers
irrespective of their cache domain. (This should have no effect
currently as all the batch buffers are expected to be I915_CACHE_LLC and
so using the cpu relocation path anyway.)
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>
The important bugfix here is that we must not unlink the vma when
we keep it around as a placeholder for the execbuf code. Since then we
won't find it again when execbuf gets interrupt and restarted and
create a 2nd vma. And since the code as-is isn't fit yet to deal with
more than one vma, hilarity ensues.
Specifically the dma map/unmap of the sg table isn't adjusted for
multiple vmas yet and will blow up like this:
BUG: unable to handle kernel NULL pointer dereference at 0000000000000008
IP: [<ffffffffa008fb37>] i915_gem_gtt_finish_object+0x73/0xc8 [i915]
PGD 56bb5067 PUD ad3dd067 PMD 0
Oops: 0000 [#1] SMP
Modules linked in: tcp_lp ppdev parport_pc lp parport ipv6 dm_mod dcdbas snd_hda_codec_hdmi pcspkr snd_hda_codec_realtek serio_raw i2c_i801 iTCO_wdt iTCO_vendor_support snd_hda_intel snd_hda_codec lpc_ich snd_hwdep mfd_core snd_pcm snd_page_alloc snd_timer snd soundcore acpi_cpufreq i915 video button drm_kms_helper drm mperf freq_table
CPU: 1 PID: 16650 Comm: fbo-maxsize Not tainted 3.11.0-rc4_nightlytop_d93f59_debug_20130814_+ #6957
Hardware name: Dell Inc. OptiPlex 9010/03JR84, BIOS A01 05/04/2012
task: ffff8800563b3f00 ti: ffff88004bdf4000 task.ti: ffff88004bdf4000
RIP: 0010:[<ffffffffa008fb37>] [<ffffffffa008fb37>] i915_gem_gtt_finish_object+0x73/0xc8 [i915]
RSP: 0018:ffff88004bdf5958 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff8801135e0000 RCX: ffff8800ad3bf8e0
RDX: ffff8800ad3bf8e0 RSI: 0000000000000000 RDI: ffff8801007ee780
RBP: ffff88004bdf5978 R08: ffff8800ad3bf8e0 R09: 0000000000000000
R10: ffffffff86ca1810 R11: ffff880036a17101 R12: ffff8801007ee780
R13: 0000000000018001 R14: ffff880118c4e000 R15: ffff8801007ee780
FS: 00007f401a0ce740(0000) GS:ffff88011e280000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000008 CR3: 000000005635c000 CR4: 00000000001407e0
Stack:
ffff8801007ee780 ffff88005c253180 0000000000018000 ffff8801135e0000
ffff88004bdf59a8 ffffffffa0088e55 0000000000000011 ffff8801007eec00
0000000000018000 ffff880036a17101 ffff88004bdf5a08 ffffffffa0089026
Call Trace:
[<ffffffffa0088e55>] i915_vma_unbind+0xdf/0x1ab [i915]
[<ffffffffa0089026>] __i915_gem_shrink+0x105/0x177 [i915]
[<ffffffffa0089452>] i915_gem_object_get_pages_gtt+0x108/0x309 [i915]
[<ffffffffa0085ba9>] i915_gem_object_get_pages+0x61/0x90 [i915]
[<ffffffffa008f22b>] ? gen6_ppgtt_insert_entries+0x103/0x125 [i915]
[<ffffffffa008a113>] i915_gem_object_pin+0x1fa/0x5df [i915]
[<ffffffffa008cdfe>] i915_gem_execbuffer_reserve_object.isra.6+0x8d/0x1bc [i915]
[<ffffffffa008d156>] i915_gem_execbuffer_reserve+0x229/0x367 [i915]
[<ffffffffa008dbf6>] i915_gem_do_execbuffer.isra.12+0x4dc/0xf3a [i915]
[<ffffffff810fc823>] ? might_fault+0x40/0x90
[<ffffffffa008eb89>] i915_gem_execbuffer2+0x187/0x222 [i915]
[<ffffffffa000971c>] drm_ioctl+0x308/0x442 [drm]
[<ffffffffa008ea02>] ? i915_gem_execbuffer+0x3ae/0x3ae [i915]
[<ffffffff817db156>] ? __do_page_fault+0x3dd/0x481
[<ffffffff8112fdba>] vfs_ioctl+0x26/0x39
[<ffffffff811306a2>] do_vfs_ioctl+0x40e/0x451
[<ffffffff817deda7>] ? sysret_check+0x1b/0x56
[<ffffffff8113073c>] SyS_ioctl+0x57/0x87
[<ffffffff8135bbfe>] ? trace_hardirqs_on_thunk+0x3a/0x3f
[<ffffffff817ded82>] system_call_fastpath+0x16/0x1b
Code: 48 c7 c6 84 30 0e a0 31 c0 e8 d0 e9 f7 ff bf c6 a7 00 00 e8 07 af 2c e1 41 f6 84 24 03 01 00 00 10 75 44 49 8b 84 24 08 01 00 00 <8b> 50 08 48 8b 30 49 8b 86 b0 04 00 00 48 89 c7 48 81 c7 98 00
RIP [<ffffffffa008fb37>] i915_gem_gtt_finish_object+0x73/0xc8 [i915]
RSP <ffff88004bdf5958>
CR2: 0000000000000008
As a consequence we need to change the "only one vma for now" check in
vma_unbind - since vma_destroy isn't always called the obj->vma_list
might not be empty. Instead check that the vma list is singular at the
beginning of vma_unbind. This is also more symmetric with bind_to_vm.
This fixes the igt/gem_evict_everything|alignment testcases.
v2:
- Add a paranoid WARN to mark_free in the eviction code to make sure
we never try to evict a vma used by the execbuf code right now.
- Move the check for a temporary execbuf vma into vma_destroy -
otherwise the failure path cleanup in bind_to_vm will blow up.
Our first attempting at fixing this was
commit 1be81a2f2cfd8789a627401d470423358fba2d76
Author: Chris Wilson <chris@chris-wilson.co.uk>
Date: Tue Aug 20 12:56:40 2013 +0100
drm/i915: Don't destroy the vma placeholder during execbuffer reservation
Squash with this when merging!
v3: Improvements suggested in Chris' review:
- Move the WARN_ON in vma_destroy that checks for vmas with an drm_mm
allocation before the early return.
- Bail out if we hit the WARN in mark_free to hopefully make the
kernel survive for long enough to capture it.
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Ben Widawsky <ben@bwidawsk.net>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=68298
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=68171
Tested-by: lu hua <huax.lu@intel.com> (v2)
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
The execbuffer handle and exec_link were moved from the object into the
vma. As the vma may be unbound and destroyed whilst attempting to
reserve the execbuffer objects (either through a forced unbind to fix up
a misalignment or through an evict-everything call) we need to prevent
the free of the i915_vma itself. Otherwise not only is the list of
objects to reserve corrupt, but we continue to reference stale vma
entries.
Fixes kernel crash with i-g-t/gem_evict_everything
This regression has been introduced in
commit 04038a515d6eda6dd0857c0ade0b3950d372f4c0
Author: Ben Widawsky <ben@bwidawsk.net>
AuthorDate: Wed Aug 14 11:38:36 2013 +0200
drm/i915: Convert execbuf code to use vmas
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
References: http://www.spinics.net/lists/intel-gfx/msg32038.html
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=68298
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
