| Commit message (Collapse) | Author | Age |
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We don't need to hold struct_mutex all through intel_pipe_set_base(),
just need to hold it while pinning/unpinning the buffers.
So reduce the struct_mutext usage in intel_pipe_set_base() just like we
did for the sprite code in:
commit 82284b6becdbef6d8cd3fb43e8698510833a5129
Author: Ville Syrjälä <ville.syrjala@linux.intel.com>
Date: Tue Oct 1 18:02:12 2013 +0300
drm/i915: Reduce the time we hold struct mutex in sprite update_plane code
The FBC and PSR locking is still entirely fubar. That stuff was
previouly done while holding struct_mutex, so leave it there for now.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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Based on Bspec the command parser must be stopped prior to
issuing sync flush. This should be done by the caller of
intel_ring_setup_status_page. Patch adds a warning if it is
not done.
v2: rebased based on new patch (wait for ring to become idle)
Signed-off-by: Naresh Kumar Kachhi <naresh.kumar.kachhi@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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make sure we wait for rings to become idle once they are
disabled. In case of timeout print an error message
Signed-off-by: Naresh Kumar Kachhi <naresh.kumar.kachhi@intel.com>
[danvet: Frob patch as suggested by Chris.]
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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Rings should be idle before issuing sync_flush
(in intel_ring_setup_status_page). This patch moves the ring
disabling before doing the HW status page setup.
Signed-off-by: Naresh Kumar Kachhi <naresh.kumar.kachhi@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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Our code allows have a PPGTT that is smaller than the maximum size for
GEN6-GEN7. Though I don't think this actually ever occurs, the code may
as well work properly and more importantly look correct by using the
variable size instead of the HW max.
Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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I'm not clear if the hardware is still subject to the same prefetching
issues that made us use a scratch page in the first place. In either
case, we're using garbage with the current code (we will end up using
offset 0).
This may be the cause of our current gem_cpu_reloc regression with
PPGTT. I cannot test it at the moment.
Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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Introduced in
commit e0e33f8ff6f0b6d286afc314802be4993341bd47
Author: Imre Deak <imre.deak@intel.com>
Date: Tue Mar 4 19:23:07 2014 +0200
The impact was luckily minimal, due to the extra check we do against a
software pipestat IRQ mask.
Caught by Fengguang's 0-day tester.
Cc: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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BSpec is a bit unclear whether HDMI+HDMI cloning should work on g4x.
Tests on real hardware say that it does. Since g4x can't send
infoframes to more than one HDMI port anyway, we don't lose anything
by allow it.
For PCH platforms BSpec explicitly forbids HDMI+HDMI cloning.
Whether HDMI+HDMI cloning might also work on VLV is a bit unclear, but
since we'd at least lose the capability of sending infoframes to more
than one cloned HDMI port, it doesn't seem like a good idea to allow it.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=73850
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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HDMI+VGA cloning should be supported on all platforms. The only real
obstacle is the 1.5x clock adjustment for 12bpc HDMI, but that is now
taken care of, so we can allow HDMI+VGA cloning.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=73850
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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When cloning HDMI with other output types, we can't use 12bpc since the
clocks for the other encoder types would be off. So have
intel_hdmi_compute_config() check if there are other encoders besides
HDMI being fed from the same pipe, and if so, pick 8bpc insted if 12bpc.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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Linux 3.14-rc6
I need the hdmi/dvi-dual link fixes in 3.14 to avoid ugly conflicts
when merging Ville's new hdmi cloning support into my -next tree
Conflicts:
drivers/gpu/drm/i915/Makefile
drivers/gpu/drm/i915/intel_dp.c
Makefile cleanup conflicts with an acpi build fix, intel_dp.c is
trivial.
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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Currently we allow encoders to indicate whether they can be part of a
cloned set with just one flag. That's not flexible enough to describe
the actual hardware capabilities. Instead make it a bitmask of encoder
types with which the current encoder can be cloned.
For now we set the bitmask to allow DVO+DVO and DVO+VGA, which should
match what the old boolean flag allowed. We will add some more cloning
options in the future.
Note that this patch also removes the encoder.possible_clones setting
from encoder setup code - we compute this dynamically.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@gmail.com>
[danvet: Add Ville's explanation why removing the encoder
possible_clones is save.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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When adding new gunk, _always_ think of a good place. Start/end
usually just means that this didn't happen, and on top of that results
in needless conflicts with other patches doing the same.
Introduced in
commit 62d5d69b49b6fea9905e36e67cc6c4fc5a17d75f
Author: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Date: Tue Feb 25 17:11:28 2014 +0200
drm/i915: Add suspend count to error state
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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The stolen allocator objects loudly if the caller requests a zero-sized
object. This is a useful verbose check as in most cases the request
should have been pruned much early. Here we just want to silently return
before attempting the allocation.
Regression from
commit 484b41dd70a9fbea894632d8926bbb93f05021c7
Author: Jesse Barnes <jbarnes@virtuousgeek.org>
Date: Fri Mar 7 08:57:55 2014 -0800
drm/i915: remove early fb allocation dependency on CONFIG_FB v2
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=75963
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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During KMS takeover, we try to capture the current configuration and
preserve it across our initialisation. For a variety of reasons, we may
fail this, for example if the current mode was using the legacy VGA
plane. Under such circumstances, we discard the fb in the plane config
and tried to find a matching fb on another CRTC. This obviously also
failed, leaving the plane config fb dangling, pointing to the freed block.
Regression from
commit 484b41dd70a9fbea894632d8926bbb93f05021c7
Author: Jesse Barnes <jbarnes@virtuousgeek.org>
Date: Fri Mar 7 08:57:55 2014 -0800
drm/i915: remove early fb allocation dependency on CONFIG_FB v2
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=75963
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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By stuffing the fb allocation into the crtc, we get mode set lifetime
refcounting for free, but have to handle the initial pin & fence
slightly differently. It also means we can move the shared fb handling
into the core rather than leaving it out in the fbdev code.
v2: null out crtc->fb on error (Daniel)
take fbdev fb ref and remove unused error path (Daniel)
Requested-by: Daniel Vetter <daniel@ffwll.ch>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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Retrieve current framebuffer config info from the regs and create an fb
object for the buffer the BIOS or boot loader left us. This should
allow for smooth transitions to userspace apps once we finish the
initial configuration construction.
v2: check for non-native modes and adjust (Jesse)
fixup aperture and cmap frees (Imre)
use unlocked unref if init_bios fails (Jesse)
fix curly brace around DSPADDR check (Imre)
comment failure path for pin_and_fence (Imre)
v3: fixup fixup of aperture frees (Chris)
v4: update to current bits (locking & pin_and_fence hack) (Jesse)
v5: move fb config fetch to display code (Jesse)
re-order hw state readout on initial load to suit fb inherit (Jesse)
re-add pin_and_fence in fbdev code to make sure we refcount properly (Je
v6: rename to plane_config (Daniel)
check for valid object when initializing BIOS fb (Jesse)
split from plane_config readout and other display changes (Jesse)
drop use_bios_fb option (Chris)
update comments (Jesse)
rework fbdev_init_bios for clarity (Jesse)
drop fb obj ref under lock (Chris)
v7: use fb object from plane_config instead (Ville)
take ref on fb object (Jesse)
v8: put under i915_fastboot option (Jesse)
fix fb ptr checking (Jesse)
inform drm_fb_helper if we fail to enable a connector (Jesse)
drop unnecessary enabled[] modifications in failure cases (Chris)
split from BIOS connector config readout (Daniel)
don't memset the fb buffer if preallocated (Chris)
alloc ifbdev up front and pass to init_bios (Chris)
check for bad ifbdev in restore_mode too (Chris)
v9: fix up !fastboot bpp setting (Jesse)
fix up !fastboot helper alloc (Jesse)
make sure BIOS fb is sufficient for biggest active pipe (Jesse)
v10:fix up size calculation for proposed fbs (Chris)
go back to two pass pipe fb assignment (Chris)
add warning for active pipes w/o fbs (Chris)
clean up num_pipes checks in fbdev_init and fbdev_restore_mode (Chris)
move i915.fastboot into fbdev_init (Chris)
v11:make BIOS connector config usage unconditional (Daniel)
v12:fix up fb vs pipe size checking (Chris)
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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This should allow BIOS fb inheritance to work on ILK+ machines too.
v2: handle tiled BIOS fbs (Kristian)
split out common bits (Jesse)
v3: alloc fb obj out in _init
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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Read out the current plane configuration at init time into a new
plane_config structure. This allows us to track any existing
framebuffers attached to the plane and potentially re-use them in our
fbdev code for a smooth handoff.
v2: update for new pitch_for_width function (Jesse)
comment how get_plane_config works with shared fbs (Jesse)
v3: s/ARGB/XRGB (Ville)
use pipesrc width/height (Ville)
fix fourcc comment (Bob)
use drm_format_plane_cpp (Ville)
v4: use fb for tracking fb data object (Ville)
v5: fix up gen2 pitch limits (Ville)
v6: read out stride as well (Daniel)
v7: split out init ordering changes (Daniel)
don't fetch config if !CONFIG_FB
v8: use proper height in get_plane_config (Chris)
v9: fix CONFIG_FB check for modular configs (Jani)
v10: add comment about stolen allocation stomping
v11: drop hw state readout hunk (Daniel)
v12: handle tiled BIOS fbs (Kristian)
pull out common bits (Jesse)
v13: move fb obj alloc out to _init
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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Early at init time, we can try to read out the plane config structure
and try to preserve it if possible.
v2: alloc fb obj at init time after fetching plane config
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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We don't always want to write into main memory with pwrite. The shmem
fast path in particular is used for memory that is cacheable - under
such circumstances forcing the cache eviction is undesirable. As we will
always flush the cache when targeting incoherent buffers, we can rely on
that second pass to apply the cache coherency rules and so benefit from
in-cache copies otherwise.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Brad Volkin <bradley.d.volkin@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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We used to lock individual pages inside the buffer object and so needed
to update the page flags every time. However, we now pin the pages into
the object for the duration of the pwrite/pread (and hopefully much
longer) and so we can forgo the flag updates until we release all the
pages.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Brad Volkin <bradley.d.volkin@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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into drm-next
Here's the latest iteration of the universal planes work, which I believe is
finally ready for merging. Aside from the minor driver patches to use the
new drm_for_each_legacy_plane() macro for plane loops, these should all have
an r-b from Rob Clark now.
Actual userspace-visibility is currently hidden behind a
drm.universal_planes module parameter so that we can do some experimental
testing of this before flipping it on universally.
* 'primary-plane' of git://people.freedesktop.org/~robclark/linux:
drm/doc: Update plane documentation and add plane helper library
drm: Allow userspace to ask for universal plane list (v2)
drm: Remove unused drm_crtc->fb
drm: Replace crtc fb with primary plane fb (v3)
drm/msm: Switch to universal plane API's
drm: Add drm_crtc_init_with_planes() (v2)
drm: Add plane type property (v2)
drm: Add drm_universal_plane_init()
drm: Add primary plane helpers (v3)
drm: Make drm_crtc_check_viewport non-static
drm/shmobile: Restrict plane loops to only operate on legacy planes
drm/i915: Restrict plane loops to only operate on overlay planes (v2)
drm/exynos: Restrict plane loops to only operate on overlay planes (v2)
drm: Add support for multiple plane types (v2)
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Userspace clients which wish to receive all DRM planes (primary and
cursor planes in addition to the traditional overlay planes) may set the
DRM_CLIENT_CAP_UNIVERSAL_PLANES capability.
v2: Hide behind drm.universal_planes module option [suggested by
Daniel Vetter]
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Rob Clark <robdclark@gmail.com>
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Now that CRTC's have a primary plane, there's no need to track the
framebuffer in the CRTC. Replace all references to the CRTC fb with the
primary plane's fb.
This patch was generated by the Coccinelle semantic patching tool using
the following rules:
@@ struct drm_crtc C; @@
- (C).fb
+ C.primary->fb
@@ struct drm_crtc *C; @@
- (C)->fb
+ C->primary->fb
v3: Generate patch via coccinelle. Actual removal of crtc->fb has been
moved to a subsequent patch.
v2: Fixup several lingering crtc->fb instances that were missed in the
first patch iteration. [Rob Clark]
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Rob Clark <robdclark@gmail.com>
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Use drm_universal_plane_init() and drm_crtc_init_with_planes() rather
than the legacy drm_plane_init() / drm_crtc_init(). This will ensure
that the proper primary plane is registered with the DRM (and eventually
exposed to userspace in future patches).
Cc: Rob Clark <robdclark@gmail.com>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Rob Clark <robdclark@gmail.com>
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Add a new drm_crtc_init_with_planes() to allow drivers to provide
specific primary and cursor planes at CRTC initialization. The existing
drm_crtc_init() interface remains to avoid driver churn in existing
drivers; it will initialize the CRTC with a plane helper-created primary
plane and no cursor plane.
v2:
- Move drm_crtc_init() to plane helper file so that nothing in the DRM
core depends on helpers. [suggested by Daniel Vetter]
- Keep cursor parameter to drm_crtc_init_with_planes() a void* until
we actually add cursor support. [suggested by Daniel Vetter]
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Rob Clark <robdclark@gmail.com>
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Add a plane type property to allow userspace to distinguish plane types.
v2: Driver-specific churn eliminated now that drm_plane_init() and
drm_universal_plane_init() were separated out in a previous patch.
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Rob Clark <robdclark@gmail.com>
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Add a new plane initialization interface for universal plane support
that allows a specific plane type (primary, cursor, or overlay) to
be specified.
drm_plane_init() remains as a compatibility API to reduce churn in
existing drivers. The 'bool priv' parameter has been changed to
'bool is_primary' under the assumption that all existing uses of
private planes were representing primary planes.
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Rob Clark <robdclark@gmail.com>
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When we expose non-overlay planes to userspace, they will become
accessible via standard userspace plane API's. We should be able to
handle the standard plane operations against primary planes in a generic
way via the modeset handler.
Drivers that can program primary planes more efficiently, that want to
use their own primary plane structure to track additional information,
or that don't have the limitations assumed by the helpers are free to
provide their own implementation of some or all of these handlers.
v3: Tweak kerneldoc formatting slightly to avoid ugliness
v2:
- Move plane helpers to a new file (drm_plane_helper.c)
- Tighten checks on update handler (check for scaling, CRTC coverage,
subpixel positioning)
- Pass proper panning parameters to modeset interface
- Disallow disabling primary plane (and thus CRTC) if other planes are
still active on the CRTC.
- Use a minimal format list that should work on all hardware/drivers.
Drivers may call this function with a more accurate plane list to
enable additional formats they can support.
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Rob Clark <robdclark@gmail.com>
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This function will be used by the universal plane helpers and may also
be useful for individual drivers.
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Rob Clark <robdclark@gmail.com>
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Ensure that existing driver loops over all planes do not change behavior
when we begin adding new types of planes (primary and cursor) to the DRM
plane list in future patches.
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
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Ensure that existing driver loops over all planes do not change behavior
when we begin adding new types of planes (primary and cursor) to the DRM
plane list in future patches.
v2: Switch to using drm_for_each_legacy_plane()
Cc: Intel Graphics Development <intel-gfx@lists.freedesktop.org>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
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Ensure that existing driver loops over all planes do not change behavior
when we begin adding new types of planes (primary and cursor) to the DRM
plane list in future patches.
v2: Switch to using drm_for_each_legacy_plane()
Cc: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
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The DRM core currently only tracks "overlay"-style planes. Start
refactoring the plane handling to allow other plane types (primary and
cursor) to also be placed on the DRM plane list.
v2: Add drm_for_each_legacy_plane() iterator to smooth transition
of drivers with plane loops.
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Rob Clark <robdclark@gmail.com>
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This is the equivalent change in the crtc helpers as done to the i915
modeset infrastructure in
commit b0a2658acb5bf9ca86b4aab011b7106de3af0add
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date: Tue Dec 18 09:37:54 2012 +0100
drm/i915: don't disable disconnected outputs
This was originally introduced to make encoder sharing on radone
easier for userspace, but:
- It is policy and as such belongs into userspace. E.g. personally I'm
fairly annoyed that a flaky cable results in permanent changes of
the desktop layout, so I'll kick out DEs which do this. Worse if the
kernel also tries to be clever.
- It's inconsistent: We only kill disconnected outputs on setCrtc
(which userspace might also call when just changing the
framebuffer), but not when e.g. we receive a hpd event or in the
output poll worker.
- It's unexpected behaviour for the userspace driver, at least in the
intel ddx we've had tons of bugs where the driver fell over and
killed the X session becuase pageflips/vblanks suddenly stopped
working. We've had to fix this by wrapping every single setCrtc int
a big "recover kms state from the kernel again" operation.
- It's suprising for the kernel, too: It took a few mails between Rob,
Matt and me for them to notice that little dragon wreaking havoc
with the universal plane framebuffer refcounting.
- Userspace can cope with it and e.g. Gnome already kills disconnected
outputs and reconfigures the desktop automatically. And since there
have been no regression reports for the i915 change from over 1 year
ago I think all other DEs are also ready.
Note that the lines removed in this patch go back to
commit a3a0544b2c84e1d7a2022b558ecf66d8c6a8dd93
Author: Dave Airlie <airlied@redhat.com>
Date: Mon Aug 31 15:16:30 2009 +1000
drm/kms: add explicit encoder disable function and detach harder.
Unfortunately the patch itself doesn't explain a hole lot about why it
was added ...
Cc: Matt Roper <matthew.d.roper@intel.com>
Cc: Rob Clark <robdclark@gmail.com>
Cc: Dave Airlie <airlied@redhat.com>
Cc: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>
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This was introduced in
commit 25f397a429dfa43f22c278d0119a60a343aa568f
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date: Fri Jul 19 18:57:11 2013 +0200
drm/crtc-helper: explicit DPMS on after modeset
but due to a bit of rebase fail on my side the patch actually merged
put one hunk on the wrong side of a break statement. Fix this up.
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Cc: Dan Carpenter <dan.carpenter@oracle.com>
Cc: Dave Airlie <airlied@redhat.com>
Cc: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>
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This fixes a BUG_ON(bo->sync_obj != NULL); in ttm_bo_release_list.
Cc: stable@vger.kernel.org #v3.10+
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
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This should ensure we don't hit a locking problem when someone
wakes us up via a connector, we should never go into suspend
while the display is on anyways.
Signed-off-by: Dave Airlie <airlied@redhat.com>
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Signal availability of prime fd reference ioctls and render nodes.
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Brian Paul <brianp@vmware.com>
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Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Brian Paul <brianp@vmware.com>
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Make sure only buffer objects that are referenced by the client can be mapped.
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Brian Paul <brianp@vmware.com>
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A function to be used to check whether a caller has put a ref object
(opened) a struct ttm_base_object
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Brian Paul <brianp@vmware.com>
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If using legacy (non-prime) surface sharing, only allow surfaces
to be shared between clients with the same master. This will block
malicious clients from peeking at contents at surfaces from other
(possibly vt-switched) masters.
v2:
s/legacy_client/primary_client/
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Brian Paul <brianp@vmware.com>
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Allow prime fds and at the same time block legacy handles for render-nodes
in the surface reference ioctls. This means these ioctls can be used
directly from prime-aware clients, and that they can be called from
render-nodes.
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Brian Paul <brianp@vmware.com>
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These ioctls will anyway only succeed if the client previously opened
referenced the object. Furthermore, closing the client would implicitly
execute the same action. This prevents clients from blocking on UNREF if
their master dropped, and will allow masters to UNREF after dropping
master privileges.
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Brian Paul <brianp@vmware.com>
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The following restrictions affect clients connecting using legacy nodes:
*) Masters that have dropped master privilieges are not considered
authenticated until they regain master privileges.
*) Clients whose master have dropped master privileges block interruptibly on
ioctls requiring authentication until their master regains master
privileges. If their master exits, they are killed.
This is primarily designed to prevent clients authenticated with one master to
access data from clients authenticated with another master.
(Think fast user-switching or data sniffers enabled while X is vt-switched).
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Brian Paul <brianp@vmware.com>
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Don't use a per-master semaphore (ttm lock) for reservation protection, but
rather a per-device semaphore. This is needed since clients connecting using
render nodes aren't master aware.
The ttm lock used should probably be replaced with a reader-write semaphore
once the function down_xx_interruptible() is available.
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Brian Paul <brianp@vmware.com>
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Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Brian Paul <brianp@vmware.com>
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The master management was previously protected by the drm_device::struct_mutex.
In order to avoid locking order violations in a reworked dropped master
security check in the vmwgfx driver, break it out into a separate master_mutex.
Locking order is master_mutex -> struct_mutex.
Also remove drm_master::blocked since it's not used.
v2: Add an inline comment about what drm_device::master_mutex is protecting.
v3: Remove unneeded struct_mutex locks. Fix error returns in
drm_setmaster_ioctl().
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Brian Paul <brianp@vmware.com>
Reviewed-by: David Herrmann <dh.herrmann@gmail.com>
Acked-by: Daniel Vetter <daniel@ffwll.ch>
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