After suspend-to-ram or -disk we don't know what power state the display
HW will be, DC0 or DC9 are both possible states, so reset the software
DC state tracking in these cases. This gets rid of 'DC state mismatch'
error messages during resuming from ram or disk where we expected to be
in DC9 (as set by the suspend handler) but we are in DC0.
v2:
- Remove extra WS in gen9_sanitize_dc_state() (Bob)
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Bob Paauwe <bob.j.paauwe@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1461173277-16090-4-git-send-email-imre.deak@intel.com
Initially we thought that the platform specific suspend/resume sequences
can be shared between the runtime and system suspend/resume handlers.
This turned out to be not true, we have quite a few differences on most
of the platforms. This was realized already earlier by Paulo who
inlined the platform specific resume_prepare handlers. We have the
same problem with the corresponding suspend_complete handlers, there are
platform differences that make it unfeasible to share the code between
the runtime and system suspend paths. Also now we call functions that
need to be paired like hsw_enable_pc8()/hsw_disable_pc8() from different
levels of the call stack, which is confusing. Fix this by inlining the
suspend_complete handlers too.
This is also needed by the next patch that removes a redundant
uninit/init call during system suspend/resume on BXT.
No functional change.
CC: Paulo Zanoni <przanoni@gmail.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Bob Paauwe <bob.j.paauwe@intel.com>
[s/uninline/inline in the commit message]
Link: http://patchwork.freedesktop.org/patch/msgid/1461173277-16090-2-git-send-email-imre.deak@intel.com
Since ref counting is in the object now we can just call the
normal interfaces.
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This reduces the fb_lock to just protecting the num_fb/fb_list.
"Previously fb refcounting, and especially the weak reference
(kref_get_unless_zero) used in fb lookups have been protected by fb_lock.
But with the refactoring to share refcounting in the drm_mode_object base
class that switched to being protected by idr_mutex, which means fb_lock
critical sections can be reduced."
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>
When we lookup an ref counted object we now take a proper reference
using kref_get_unless_zero.
Framebuffer lookup no longer needs do this itself.
Convert rmfb to using framebuffer lookup and deal with the fact
it now gets an extra reference that we have to cleanup. This should
mean we can avoid holding fb_lock across rmfb. (if I'm wrong let me
know).
We also now only hold the fbs_lock around the list manipulation.
"Previously fb refcounting, and especially the weak reference
(kref_get_unless_zero) used in fb lookups have been protected by fb_lock.
But with the refactoring to share refcounting in the drm_mode_object base
class that switched to being protected by idr_mutex, which means fb_lock
critical sections can be reduced."
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>
No need to hold the lock while assigning the variable.
Daniel wrote:
"Not sure why exactly I put that under the lock, but the only thing that
can race here is rmfb while addfb2 is still doing it's thing, with a
correctly guess (easy to do since they're fully deterministic) fb_id."
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>
We don't need to hold the fb lock around the initialisation,
only around the list manipulaton.
So do the lock hold only around the register for now.
From Daniel:
Previously fb refcounting, and especially the weak reference
(kref_get_unless_zero) used in fb lookups have been protected by fb_lock.
But with the refactoring to share refcounting in the drm_mode_object base
class that switched to being protected by idr_mutex, which means fb_lock
critical sections can be reduced.
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>
No point have this code dupliated at this point, use the
_object_find code instead now.
Signed-off-by: Dave Airlie <airlied@redhat.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This is the initial code to add references to some mode objects.
In the future we need to start reference counting connectors so
firstly I want to reorganise the code so the framebuffer ref counting
uses the same paths.
This patch shouldn't change any functionality, just moves the kref.
[airlied: move kerneldoc as well]
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Avoids drivers knowing where the kref is stored.
[airlied: add kerneldoc]
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Just use the generic function.
The main side effect of this is that the fb->base.id
is now protected by the idr mutex as well.
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>
A later patch will use it in framebuffer_init, and I want
to keep the diff cleaner.
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This changes the code to handle being called multiple times without
side effects. The new names seems more suitable for what it does.
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This PR contains several improvement and cleanup patches for the
atmel-hlcdc driver to be applied on drm-next (targeting 4.7).
* 'drm-atmel-hlcdc-devel' of https://github.com/bbrezillon/linux-at91:
drm: atmel-hlcdc: route DMA accesses through AHB interfaces
drm: atmel-hlcdc: check display mode validity in crtc->mode_fixup()
drm: atmel-hlcdc: rework the output code to support drm bridges
drm: atmel-hlcdc: move output mode selection in CRTC implementation
drm: atmel-hlcdc: support extended timing ranges on sama5d4 and sama5d2
drm: atmel-hlcdc: remove leftovers from atomic mode setting migration
drm: atmel-hlcdc: fix connector and encoder types
drm: atmel-hlcdc: support asynchronous atomic commit operations
drm: atmel-hlcdc: add a ->cleanup_fb() operation
- make modeset hw state checker atomic aware (Maarten)
- close races in gpu stuck detection/seqno reading (Chris)
- tons&tons of small improvements from Chris Wilson all over the gem code
- more dsi/bxt work from Ramalingam&Jani
- macro polish from Joonas
- guc fw loading fixes (Arun&Dave)
- vmap notifier (acked by Andrew) + i915 support by Chris Wilson
- create bottom half for execlist irq processing (Chris Wilson)
- vlv/chv pll cleanup (Ville)
- rework DP detection, especially sink detection (Shubhangi Shrivastava)
- make color manager support fully atomic (Maarten)
- avoid livelock on chv in execlist irq handler (Chris)
* tag 'drm-intel-next-2016-04-11' of git://anongit.freedesktop.org/drm-intel: (82 commits)
drm/i915: Update DRIVER_DATE to 20160411
drm/i915: Avoid allocating a vmap arena for a single page
drm,i915: Introduce drm_malloc_gfp()
drm/i915/shrinker: Restrict vmap purge to objects with vmaps
drm/i915: Refactor duplicate object vmap functions
drm/i915: Consolidate common error handling in intel_pin_and_map_ringbuffer_obj
drm/i915/dmabuf: Tighten struct_mutex for unmap_dma_buf
drm/i915: implement WaClearTdlStateAckDirtyBits
drm/i915/bxt: Reversed polarity of PORT_PLL_REF_SEL bit
drm/i915: Rename hw state checker to hw state verifier.
drm/i915: Move modeset state verifier calls.
drm/i915: Make modeset state verifier take crtc as argument.
drm/i915: Replace manual barrier() with READ_ONCE() in HWS accessor
drm/i915: Use simplest form for flushing the single cacheline in the HWS
drm/i915: Harden detection of missed interrupts
drm/i915: Separate out the seqno-barrier from engine->get_seqno
drm/i915: Remove forcewake dance from seqno/irq barrier on legacy gen6+
drm/i915: Fixup the free space logic in ring_prepare
drm/i915: Simplify check for idleness in hangcheck
drm/i915: Apply a mb between emitting the request and hangcheck
...
misc pull req all over. Biggest thing is the
drm_connector_(un)register_all cleanup from Alexey for drivers without the
load/unload midlayer hooks. I.e. all the new ones, and a bunch of the
pending new atomic drivers depend upon this. Or at least I asked them to
rebase ;-)
* tag 'topic/drm-misc-2016-04-21' of git://anongit.freedesktop.org/drm-intel:
drm: Make drm.debug parameter description more helpful
drm: Remove warning from drm_connector_unregister_all()
drm: probe_helper: Hide ugly ifdef
drm: rcar-du: Use generic drm_connector_register_all() helper
drm: atmel_hldc: Use generic drm_connector_register_all() helper
drm: Introduce drm_connector_register_all() helper
drm: fix lut value extraction function
drm/atomic-helper: Print an error if vblank wait times out
drm/dp/mst: Restore primary hub guid on resume
drm: Release driver references to handle before making it available again
drm/i915/dp/mst: Add source port info to debugfs output
drm/dp/mst: Enhance DP MST debugfs output
drm/edid: Add drm_edid_get_monitor_name()
include/drm: Reword debug categories comment.
drm/crtc_helper: Reset empty plane state in drm_helper_crtc_mode_set_base()
drm/virtio: Drop dummy gamma table support
drm/bochs: Drop fake gamma support
drm/core: Fix ordering in drm_mode_config_cleanup.
struct_mutex cleanups and error paths fixes. Unfortunately I didn't manage
to get acks from everyone, but this stuff has been hanging out for months
now and imo simple enough to just land the remaining few patches. But
separate pull request so that you can take a look yourself.
* tag 'topic/struct_mutex-2016-04-21' of git://anongit.freedesktop.org/drm-intel:
drm/vma_manage: Drop has_offset
drm/vgem: Drop dev->struct_mutex
drm/vgem: Move get_pages to gem_create
drm/vgem: Simplify dumb_map
drm/exynos: drop struct_mutex from fbdev setup
drm/exynos: drop struct_mutex from exynos_drm_gem_get_ioctl
drm/exynos: drop struct_mutex from exynos_gem_map_sgt_with_dma
drm/exynos: Drop dev->struct_mutex from mmap offset function
drm/nouveau: Drop dev->struct_mutex from fbdev init
drm/qxl: Use unlocked gem unreferencing
drm/omapdrm: Use unlocked gem unreferencing
drm/nouveau: Use unlocked gem unreferencing
In commit 5f304c8736 ("drm/i915/kbl: Reset secondary power well requests
left on by DMC/KVMR") I forgot about the fact that SKL==KBL most of the
time and that a secondary MISC IO power well request left on by the DMC is
"expected". Tune down the corresponding WARN to be a debug message. This
was caught by CI suspend tests.
CC: Patrik Jakobsson <patrik.jakobsson@linux.intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Patrik Jakobsson <patrik.jakobsson@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1461060036-19043-1-git-send-email-imre.deak@intel.com
Let's be user-friendly and print an actually helpful parameter
description.
This makes modinfo output the debug parameter like this:
parm: debug:Enable debug output, where each bit enables a debug category.
Bit 0 (0x01) will enable CORE messages (drm core code)
Bit 1 (0x02) will enable DRIVER messages (drm controller code)
Bit 2 (0x04) will enable KMS messages (modesetting code)
Bit 3 (0x08) will enable PRIME messages (prime code)
Bit 4 (0x10) will enable ATOMIC messages (atomic code)
Bit 5 (0x20) will enable VBL messages (vblank code) (int)
Changes from v1:
* Fixed s/PRMIE/PRIME typo.
* Add ATOMIC and VBL debug parameter documentation.
* Prefix the continuation lines with two tabs and
removed the last new line.
* Remove spurious whitespace.
Signed-off-by: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1461170703-11216-1-git-send-email-ezequiel@vanguardiasur.com.ar
Commit 6c87e5c3ec ("drm: Rename drm_connector_unplug_all() to
drm_connector_unregister_all()") replaced a manual connectors list walk
in drm_connector_unregister_all() with drm_for_each_connector(). The
list was walked without the mode config mutex locked as that ends up in
a clash with sysfs, but drm_connector_unregister_all() warns when the
mutex isn't locked.
The problem is known and doesn't require a large warning every time
drm_connector_unregister_all() is called. Fix it by reverting to manual
list walk.
Fixes: 6c87e5c3ec ("drm: Rename drm_connector_unplug_all() to drm_connector_unregister_all()")
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1461190874-32674-1-git-send-email-laurent.pinchart+renesas@ideasonboard.com
It was noticed on bug #94087 that module parameter
i915.edp_vswing=2 that should override the VBT setting
to use default voltage swing (400 mV) was not applied
for Broadwell.
This patch provides a fix for this by checking if default
i.e. higher voltage swing is requested to be used and
applies the DDI translations table for DP instead of eDP
(low vswing) table.
v2: Combine two if statements into one (Jani)
v3: Change dev_priv->edp_low_vswing to use dev_priv->vbt.edp.low_vswing
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=94087
Signed-off-by: Mika Kahola <mika.kahola@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1461155942-7749-1-git-send-email-mika.kahola@intel.com
Cc: stable@vger.kernel.org
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
The newly-introduced function i915_gem_object_pin_map() returns an
ERR_PTR (not NULL) if the pin-and-map opertaion fails, so that's what we
must check for. And it's nicer not to assign such a pointer-or-error to
a structure being filled in until after it's been validated, so we
should keep it local and avoid exporting a bogus pointer. Also, for
clarity and symmetry, we should clear 'virtual_start' along with 'vma'
when unmapping a ringbuffer.
Signed-off-by: Dave Gordon <david.s.gordon@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Now that we keep the GuC client process descriptor permanently mapped,
we don't really need to keep a local copy of the GuC's work-queue-head.
So we can simplify the code a little by not doing this.
Signed-off-by: Alex Dai <yu.dai@intel.com>
Signed-off-by: Dave Gordon <david.s.gordon@intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Don't use kmap_atomic() for doorbell & process descriptor access.
This patch fixes the BUG shown below, where the thread could sleep
while holding a kmap_atomic mapping. In order not to need to call
kmap_atomic() in this code path, we now set up a permanent kernel
mapping of the shared doorbell and process-descriptor page, and
use that in all doorbell and process-descriptor related code.
BUG: scheduling while atomic: gem_close_race/1941/0x00000002
Modules linked in: hid_generic usbhid i915 asix usbnet libphy mii
i2c_algo_bit drm_kms_helper cfbfillrect syscopyarea cfbimgblt
sysfillrect sysimgblt fb_sys_fops cfbcopyarea drm coretemp i2c_hid
hid video pinctrl_sunrisepoint pinctrl_intel acpi_pad nls_iso8859_1
e1000e ptp psmouse pps_core ahci libahci
CPU: 0 PID: 1941 Comm: gem_close_race Tainted: G U 4.4.0-160121+ #123
Hardware name: Intel Corporation Skylake Client platform/Skylake AIO
DDR3L RVP10, BIOS SKLSE2R1.R00.X100.B01.1509220551 09/22/2015
0000000000013e40 ffff880166c27a78 ffffffff81280d02 ffff880172c13e40
ffff880166c27a88 ffffffff810c203a ffff880166c27ac8 ffffffff814ec808
ffff88016b7c6000 ffff880166c28000 00000000000f4240 0000000000000001
Call Trace:
[<ffffffff81280d02>] dump_stack+0x4b/0x79
[<ffffffff810c203a>] __schedule_bug+0x41/0x4f
[<ffffffff814ec808>] __schedule+0x5a8/0x690
[<ffffffff814ec927>] schedule+0x37/0x80
[<ffffffff814ef3fd>] schedule_hrtimeout_range_clock+0xad/0x130
[<ffffffff81090be0>] ? hrtimer_init+0x10/0x10
[<ffffffff814ef3f1>] ? schedule_hrtimeout_range_clock+0xa1/0x130
[<ffffffff814ef48e>] schedule_hrtimeout_range+0xe/0x10
[<ffffffff814eef9b>] usleep_range+0x3b/0x40
[<ffffffffa01ec109>] i915_guc_wq_check_space+0x119/0x210 [i915]
[<ffffffffa01da47c>] intel_logical_ring_alloc_request_extras+0x5c/0x70 [i915]
[<ffffffffa01cdbf1>] i915_gem_request_alloc+0x91/0x170 [i915]
[<ffffffffa01c1c07>] i915_gem_do_execbuffer.isra.25+0xbc7/0x12a0 [i915]
[<ffffffffa01cb785>] ? i915_gem_object_get_pages_gtt+0x225/0x3c0 [i915]
[<ffffffffa01d1fb6>] ? i915_gem_pwrite_ioctl+0xd6/0x9f0 [i915]
[<ffffffffa01c2e68>] i915_gem_execbuffer2+0xa8/0x250 [i915]
[<ffffffffa00f65d8>] drm_ioctl+0x258/0x4f0 [drm]
[<ffffffffa01c2dc0>] ? i915_gem_execbuffer+0x340/0x340 [i915]
[<ffffffff8111590d>] do_vfs_ioctl+0x2cd/0x4a0
[<ffffffff8111eac2>] ? __fget+0x72/0xb0
[<ffffffff81115b1c>] SyS_ioctl+0x3c/0x70
[<ffffffff814effd7>] entry_SYSCALL_64_fastpath+0x12/0x6a
------------[ cut here ]------------
v4:
Only tear down doorbell & kunmap() client object if we actually
succeeded in allocating a client object (Tvrtko Ursulin)
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=93847
Original-version-by: Alex Dai <yu.dai@intel.com>
Signed-off-by: Dave Gordon <david.s.gordon@intel.com>
Cc: Tvtrko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Since we can only swap out shmemfs objects, those are the only ones that
can influence the ability of the shrinker to free pages. Currently, all
non-shmemfs objects have a raised pages_pin_count to protect them from
the shrinker, so this just makes the logic for can_release_pages()
clearer (and safer in future so that we don't over estimate our ability
to free up pages from future non-swappable objects).
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1461150592-27818-3-git-send-email-chris@chris-wilson.co.uk
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com>
Inside the shrinker we call can_release_pages() to indicate whether or
not we can make forward progress in freeing up memory by unbinding that
object. When adding our report to oom, we should be using the same
logic.
Whilst here, change the reporting from bytes to pages so that it looks
smaller to the user!, is consistent with the neighbouring oom report
itself which displays counts in pages, and makes the unsigned long
overflow less likely.
v2: Split oversized format string into two lines
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1461150592-27818-2-git-send-email-chris@chris-wilson.co.uk
Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
When iterating over the bound list, we expect all objects there to have
their pages pinned (by the bound VMA). So only report those objects with
additional pin count on their pages as "pinned". These should be those
objects used for display and hardware access.
Reported-by: Akash Goel <akash.goel@intel.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Akash Goel <akash.goel@intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1461150592-27818-1-git-send-email-chris@chris-wilson.co.uk
Push the ifdef to the drm_edid.h and create a stub, for the
DRM_LOAD_EDID_FIRMWARE=n case. This removes some clutter in
the code, making it more readable.
Signed-off-by: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1461087638-16959-1-git-send-email-ezequiel@vanguardiasur.com.ar
Now that a generic drm_connector_register_all() helper exists we may safely
substitute it for the driver-specific implementation of connectors plugging
in sysfs.
Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: David Airlie <airlied@linux.ie>
Cc: linux-renesas-soc@vger.kernel.org
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1461068693-11260-4-git-send-email-abrodkin@synopsys.com
This driver used to have its own implementation of connector_register_all()
which actually was taken as a prototype of drm_connector_register_all().
Now when drm_connector_register_all() exists reusing it here.
Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: David Airlie <airlied@linux.ie>
Cc: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1461068693-11260-3-git-send-email-abrodkin@synopsys.com
As a pair to already existing drm_connector_unregister_all() we're adding
generic implementation of what is already done in some drivers.
Once this helper is implemented we'll be ready to switch existing
driver-specific implementations with the generic one.
Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: David Airlie <airlied@linux.ie>
Cc: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1461068693-11260-2-git-send-email-abrodkin@synopsys.com
It's racy, creating mmap offsets is a slowpath, so better to remove it
to avoid drivers doing broken things.
The only user is i915, and it's ok there because everything (well
almost) is protected by dev->struct_mutex in i915-gem.
While at it add a note in the create_mmap_offset kerneldoc that
drivers must release it again. And then I also noticed that
drm_gem_object_release entirely lacks kerneldoc.
Cc: David Herrmann <dh.herrmann@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1459330852-27668-14-git-send-email-daniel.vetter@ffwll.ch
vgem doesn't have a shrinker or anything like that and drops backing
storage only at object_free time. There's no use in trying to be
clever and allocating backing storage delayed, it only causes trouble
by requiring locking.
Instead grab pages when we allocate the object right away.
v2: Fix compiling.
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1459330852-27668-12-git-send-email-daniel.vetter@ffwll.ch
The only things this protects is reading ->flags and ->size, both of
which are invariant over the lifetime of an exynos gem bo. So no
locking needed at all (besides that, nothing protects the writers
anyway).
Aside: exynos_gem_obj->size is redundant with
exynos_gem_obj->base.size and probably should be removed.
v2: Use _unlocked unreference (Daniel Stone).
Cc: Daniel Stone <daniel@fooishbar.org>
Cc: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1459330852-27668-9-git-send-email-daniel.vetter@ffwll.ch
Simply forgotten about this when I was doing my general cleansing of
simple gem mmap offset functions. There's nothing but core functions
called here, and they all have their own protection already.
Aside: DRM_ERROR for userspace controlled input isn't great, but
that's for another patch.
v2: Use _unlocked unreference (Daniel Stone).
Cc: Daniel Stone <daniel@fooishbar.org>
Cc: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1459330852-27668-7-git-send-email-daniel.vetter@ffwll.ch
For drm_gem_object_unreference callers are required to hold
dev->struct_mutex, which these paths don't. Enforcing this requirement
has become a bit more strict with
commit ef4c6270bf
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date: Thu Oct 15 09:36:25 2015 +0200
drm/gem: Check locking in drm_gem_object_unreference
Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1459330852-27668-3-git-send-email-daniel.vetter@ffwll.ch
For drm_gem_object_unreference callers are required to hold
dev->struct_mutex, which these paths don't. Enforcing this requirement
has become a bit more strict with
commit ef4c6270bf
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date: Thu Oct 15 09:36:25 2015 +0200
drm/gem: Check locking in drm_gem_object_unreference
Cc: Ben Skeggs <bskeggs@redhat.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1459330852-27668-2-git-send-email-daniel.vetter@ffwll.ch
When extracting the value at full precision (16 bits), no need to
round the value.
This was spotted by Jani when running sparse. Unfortunately this fix
doesn't get rid of the warning.
Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Reported-by: Jani Nikula <jani.nikula@intel.com>
Cc: Daniel Stone <daniels@collabora.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Matt Roper <matthew.d.roper@intel.com>
Cc: dri-devel@lists.freedesktop.org
Fixes: 5488dc16fd ("drm: introduce pipe color correction properties")
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1458655833-19547-1-git-send-email-lionel.g.landwerlin@intel.com
Looks like DPF was not implemented for gen8+ but the IER and IMR
are still enabled on initialization.
Since there is no code to handle this interrupt, gate the irq
enablement behind HAS_L3_DPF in case the feature gets enabled
in the future.
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
