| Commit message (Collapse) | Author | Age |
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The core parts for async commit.
Signed-off-by: Rob Clark <robdclark@gmail.com>
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It's a problem that can't happen yet, since we don't support any
multi-planar formats yet. But let's avoid nasty surprises when the
time comes.
Signed-off-by: Rob Clark <robdclark@gmail.com>
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Atomic wants to split the prepare/pin from where we actually program the
scanout address (so that any part that can fail is done synchronously).
Add some fb/gem apis to make this easier to use from the kms parts.
Signed-off-by: Rob Clark <robdclark@gmail.com>
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Signed-off-by: Rob Clark <robdclark@gmail.com>
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Give ourselves a way to wait for certain fence #.. makes it easier to
wait on a set of bo's, which we'll need for atomic.
Signed-off-by: Rob Clark <robdclark@gmail.com>
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Simplify things a bit for atomic, gets rid of some bookkeeping, and
makes the code cleaner.
Signed-off-by: Rob Clark <robdclark@gmail.com>
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Simplify things a bit for atomic, gets rid of some bookkeeping, and
makes the code cleaner.
TODO move iterator macro somewhere common.
Signed-off-by: Rob Clark <robdclark@gmail.com>
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Since we are configuring things via MDP4_PIPE regs in the plane, it seems
like setting the dimensions of the primary plane on the OVLP/DMA regs in
crtc is unnecessary. This will make life easier when we want to do a
nofb modeset.
Signed-off-by: Rob Clark <robdclark@gmail.com>
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Since primary-plane support in core, we can just use crtc->primary.
Signed-off-by: Rob Clark <robdclark@gmail.com>
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Since primary-plane support in core, we can just use crtc->primary.
Signed-off-by: Rob Clark <robdclark@gmail.com>
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Currently forcing the video mode from the kernel command line (for example
video=HDMI-A-1:1280x720-16@60) does not correctly set the number of bits
per pixel. This is due to a rather aggressive override in
msm_fbdev_create(). This is a particular problem for Android bring up
because the software EGL fallbacks don't support 32bpp.
Since the overrides are actually the default values anyway then this
problem can be trivially fixed by removing the overrides completely.
Change was tested by dd'ing a test image to /dev/fb0 with no video=
(still 32bpp), video=1920x1080-32@60, video=1920x1080-24@60 and
video=1920x1080-16@60 .
Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org>
Cc: David Airlie <airlied@linux.ie>
Cc: Rob Clark <robdclark@gmail.com>
Signed-off-by: Rob Clark <robdclark@gmail.com>
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Currently msm does not implement gem_prime_mmap. Without this it is not
possible to draw onto a dma-buf from userspace (making its very hard to
implement the Android rendering model).
Fixing this is just a matter of adding a little boilerplate.
Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
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Split up hdmi_init() into hdmi_init() (done at hdmi sub-device
bind/probe time) and hdmi_modeset_init() done from master driver's
modeset_init().
Anything that can fail due to dependencies on other drivers which
may be missing or not probed yet should go in hdmi_init(), so that
devm error/cleanup paths work properly.
Signed-off-by: Rob Clark <robdclark@gmail.com>
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Signed-off-by: Rob Clark <robdclark@gmail.com>
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Move anything that can fail after call to base class msm_gpu_init().
This way, if we fail, active_list has already been initialized so we
don't trip 'WARN_ON(!list_empty(&gpu->active_list))' in
msm_gpu_cleanup().
Signed-off-by: Rob Clark <robdclark@gmail.com>
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Fixes a potential error, spotted by Felipe with randconfig:
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drivers/gpu/drm/msm/mdp/mdp4/mdp4_kms.c: In function ‘mdp4_kms_init’:
drivers/gpu/drm/msm/mdp/mdp4/mdp4_kms.c:384:2: error: implicit declaration \
of function ‘devm_regulator_get_exclusive’ [-Werror=implicit-function-declaration]
mdp4_kms->vdd = devm_regulator_get_exclusive(&pdev->dev, "vdd");
^
drivers/gpu/drm/msm/mdp/mdp4/mdp4_kms.c:384:16: error: assignment makes \
pointer from integer without a cast [-Werror]
mdp4_kms->vdd = devm_regulator_get_exclusive(&pdev->dev, "vdd");
^
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Also add a brief comment explaining the use of _get_exclusive()
Reported-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Rob Clark <robdclark@gmail.com>
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This was pointless, forgot to remove the code.
Signed-off-by: Dave Airlie <airlied@redhat.com>
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git://people.freedesktop.org/~tagr/linux into drm-next
drm: Sanitize DRM_IOCTL_MODE_CREATE_DUMB input
Some drivers erroneously treat the .pitch and .size fields of struct
drm_mode_create_dumb as inputs. While the include/uapi/drm/drm_mode.h
header has a comment denoting them as outputs, that seemingly wasn't
enough to make drivers use them properly.
The result is that some userspace doesn't explicitly zero out those
fields, assuming that the kernel won't use them. That causes problems
since the data within the structure might be uninitialized, so bogus
data may end up confusing drivers (ridiculously large values for the
pitch, ...).
This series attempts to improve the situation by fixing all drivers to
not use the output fields. Furthermore to spare new drivers this bad
surprise, the DRM core now zeros out these fields prior to handing the
data structure to the driver.
Lessons learned from this are that future IOCTLs should be properly
documented (in the DRM DocBook for example) and should be rigorously
defined. To prevent misuse like this, userspace should be required to
zero out all output fields. The kernel should check for this and fail
if that's not the case.
* tag 'drm/gem-cma/for-3.19-rc1' of git://people.freedesktop.org/~tagr/linux:
drm/cma: Remove call to drm_gem_free_mmap_offset()
drm: Sanitize DRM_IOCTL_MODE_CREATE_DUMB input
drm/rcar: gem: dumb: pitch is an output
drm/omap: gem: dumb: pitch is an output
drm/cma: Introduce drm_gem_cma_dumb_create_internal()
drm/doc: Add GEM/CMA helpers to kerneldoc
drm/doc: mm: Fix indentation
drm/gem: Fix a few kerneldoc typos
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drm_gem_object_release() called later in the drm_gem_cma_free_object()
function already calls this, so there's no need to do this explicitly.
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Thierry Reding <treding@nvidia.com>
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Some drivers treat the pitch and size fields as inputs and will use them
as minima provided by userspace so that they are only overwritten if the
minimal requirements of the driver exceed them.
This can cause strange behaviour when applications don't zero out these
fields, causing whatever was on the stack to be passed to the IOCTL. In
a typical case this would become visible as a failed allocation if the
pitch or size were unusually high. But this could also cause more subtle
bugs like overallocating dumb framebuffers.
To prevent drivers from misusing these values, make the DRM core zero
out the pitch and size fields before passing the structure to the driver
implementation.
While at it, also set the output handle field to zero for good measure,
even though it's less likely to be abused.
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Thierry Reding <treding@nvidia.com>
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When creating a dumb buffer object using the DRM_IOCTL_MODE_CREATE_DUMB
IOCTL, only the width, height, bpp and flags fields are inputs. The
caller is not guaranteed to zero out or set handle, pitch and size.
Drivers must not treat these values as possible inputs, otherwise they
may use uninitialized memory during the computation of the framebuffer
size.
The R-Car DU driver treats the pitch passed in from userspace as minimum
and will only overwrite it when the driver-computed pitch is larger,
allowing userspace to, intentionally or not, overallocate framebuffers.
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Thierry Reding <treding@nvidia.com>
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When creating a dumb buffer object using the DRM_IOCTL_MODE_CREATE_DUMB
IOCTL, only the width, height, bpp and flags fields are inputs. The
caller is not guaranteed to zero out or set handle, pitch and size.
Drivers must not treat these values as possible inputs, otherwise they
may use uninitialized memory during the computation of the framebuffer
size.
The OMAP driver uses the pitch field passed in by userspace as a minimum
and only override it if the driver-computed pitch is larger than what
userspace provided. To prevent this from causing overallocation, fix the
minimum pitch to 0 to enforce the driver-computed pitch.
Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: Rob Clark <robdclark@gmail.com>
Acked-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
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This function is similar to drm_gem_cma_dumb_create() but targetted at
kernel internal users so that they can override the pitch and size
requirements of the dumb buffer.
It is important to make this difference because the IOCTL says that the
pitch and size fields are to be considered outputs and therefore should
not be used in computations of the framebuffer size. Internal users may
still want to use this code to avoid duplication and at the same time
pass on additional, driver-specific restrictions on the pitch and size.
While at it, convert the R-Car DU driver, the single user that overrides
the pitch, to use the new internal helper.
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Thierry Reding <treding@nvidia.com>
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Most of the functions already have the beginnings of kerneldoc comments
but are using the wrong opening marker. Use the correct opening marker
and flesh out the comments so that they can be integrated with the DRM
DocBook document.
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Thierry Reding <treding@nvidia.com>
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While at it, adjust the drm_gem_handle_create() function declaration to
be more consistent with other functions in the file.
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Thierry Reding <treding@nvidia.com>
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This passes the guest preferences for a where to place the
outputs through to userspace. Userspace would need to be updated
to take note of this information, X server and GNOME.
Signed-off-by: Dave Airlie <airlied@redhat.com>
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Virtual GPUs would like to give the guest some indication where on the screen
the outputs are layed out. So far we only provide modes, these
properties could be exposed to userspace so the desktop environment
could use them as hints to set the correct offsets.
v2: rename properties to be more consistent.
Signed-off-by: Dave Airlie <airlied@redhat.com>
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While looking through drm_crtc.c to double-check make locking changes
I've noticed that there's a few other places that would now benefit
from simplified return value handling.
So let's flatten the control flow and replace and always 0 ret with 0
where possible.
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Reviewed-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>
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git://people.freedesktop.org/~tagr/linux into drm-next
drm/tegra: Changes for v3.19-rc1
The highlights in this pull request are:
* IOMMU support: The Tegra DRM driver can now deal with discontiguous
buffers if an IOMMU exists in the system. That means it can allocate
using drm_gem_get_pages() and will map them into IOVA space via the
IOMMU API. Similarly, non-contiguous PRIME buffers can be imported
from a different driver, which allows better integration with gk20a
(nouveau) and less hacks.
* Universal planes: This is precursory work for atomic modesetting and
will allow hardware cursor support to be implemented on pre-Tegra114
where RGB cursors were not supported.
* DSI ganged-mode support: The DSI controller can now gang up with a
second DSI controller to drive high resolution DSI panels.
Besides those bigger changes there is a slew of fixes, cleanups, plugged
memory leaks and so on.
* tag 'drm/tegra/for-3.19-rc1' of git://people.freedesktop.org/~tagr/linux: (44 commits)
drm/tegra: gem: Check before freeing CMA memory
drm/tegra: fb: Add error codes to error messages
drm/tegra: fb: Properly release GEM objects on failure
drm/tegra: Detach panel when a connector is removed
drm/tegra: Plug memory leak
drm/tegra: gem: Use more consistent data types
drm/tegra: fb: Do not destroy framebuffer
drm/tegra: gem: dumb: pitch and size are outputs
drm/tegra: Enable the hotplug interrupt only when necessary
drm/tegra: dc: Universal plane support
drm/tegra: dc: Registers are 32 bits wide
drm/tegra: dc: Factor out DC, window and cursor commit
drm/tegra: Add IOMMU support
drm/tegra: Fix error handling cleanup
drm/tegra: gem: Use dma_mmap_writecombine()
drm/tegra: gem: Remove redundant drm_gem_free_mmap_offset()
drm/tegra: gem: Cleanup tegra_bo_create_with_handle()
drm/tegra: gem: Extract tegra_bo_alloc_object()
drm/tegra: dsi: Set up PHY_TIMING & BTA_TIMING registers earlier
drm/tegra: dsi: Replace 1000000 by USEC_PER_SEC
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dma_free_writecombine() must not be called on a buffer that couldn't be
allocated. Check for a valid virtual address before attempting to free
the memory to avoid a crash.
Reported-by: Sean Paul <seanpaul@chromium.org>
Reviewed-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Thierry Reding <treding@nvidia.com>
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This helps in determining what errors happened at specifics points in
the initialization sequence.
Signed-off-by: Thierry Reding <treding@nvidia.com>
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When fbdev initialization fails, make sure to unreference the GEM
objects properly. Note that we can't do this in the general error
unwinding path because ownership of the GEM object references is
transferred to the framebuffer upon creation.
Signed-off-by: Thierry Reding <treding@nvidia.com>
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When the DRM device is torn down and the connector is removed, make sure
to detach the panel to make sure there are no dangling pointers.
Signed-off-by: Thierry Reding <treding@nvidia.com>
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Free the DRM device-private memory upon driver unload to make sure the
memory doesn't leak.
Signed-off-by: Thierry Reding <treding@nvidia.com>
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Use size_t consistently for sizes and u32/u64 instead of uint32_t and
uint64_t.
Signed-off-by: Thierry Reding <treding@nvidia.com>
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Drop a reference instead of directly calling the framebuffer .destroy()
callback at fbdev free time. This is necessary to make sure the object
isn't destroyed if anyone else still has a reference.
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Thierry Reding <treding@nvidia.com>
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When creating a dumb buffer object using the DRM_IOCTL_MODE_CREATE_DUMB
IOCTL, only the width, height, bpp and flags parameters are inputs. The
caller is not guaranteed to zero out or set handle, pitch and size, so
the driver must not treat these values as possible inputs.
Fixes a bug where running the Weston compositor on Tegra DRM would cause
an attempt to allocate a 3 GiB framebuffer to be allocated.
Fixes: de2ba664c30f ("gpu: host1x: drm: Add memory manager and fb")
Cc: stable@vger.kernel.org
Signed-off-by: Thierry Reding <treding@nvidia.com>
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The hotplug handling needs access to the DRM device, which only appears
at ->init() time. Disable interrupts up until that time. Similarly, when
an output is removed, disable the hotplug interrupt again because the
DRM device (and with it the hotplug infrastructure) is going away.
Also make sure to only access the DRM device if it's available. Given
the above change for the hotplug interrupt this should really never
happen, but the extra check doesn't hurt either.
Signed-off-by: Thierry Reding <treding@nvidia.com>
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This allows the primary plane and cursor to be exposed as regular
DRM/KMS planes, which is a prerequisite for atomic modesetting and gives
userspace more flexibility over controlling them.
Signed-off-by: Thierry Reding <treding@nvidia.com>
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Using an unsigned long type will cause these variables to become 64-bit
on 64-bit SoCs. In practice this should always work, but there's no need
for carrying around the additional 32 bits.
Signed-off-by: Thierry Reding <treding@nvidia.com>
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The sequence to commit changes to the DC, window or cursor configuration
is repetitive and can be extracted into separate functions for ease of
use.
Signed-off-by: Thierry Reding <treding@nvidia.com>
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When an IOMMU device is available on the platform bus, allocate an IOMMU
domain and attach the display controllers to it. The display controllers
can then scan out non-contiguous buffers by mapping them through the
IOMMU.
Signed-off-by: Thierry Reding <treding@nvidia.com>
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The DRM driver's ->load() implementation didn't do a good job (no job at
all really) cleaning up on failure. Fix that by undoing any prior setup
when an error occurs. This requires a bit of rework to make it possible
to clean up fbdev midway.
This was tested by injecting errors at various points during the
initialization sequence and verifying that error cleanup didn't crash
and no memory leaked (using kmemleak).
Reported-by: Stéphane Marchesin <marcheu@chromium.org>
Reported-by: Sean Paul <seanpaul@chromium.org>
Reviewed-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Thierry Reding <treding@nvidia.com>
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Use the existing API rather than open-coding equivalent functionality
in the driver.
Signed-off-by: Thierry Reding <treding@nvidia.com>
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The drm_gem_object_release() function already performs this cleanup, so
there is no reason to do it explicitly.
Signed-off-by: Thierry Reding <treding@nvidia.com>
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There is only a single location where the function needs to do cleanup.
Skip the error unwinding path and call the cleanup function directly
instead.
Signed-off-by: Thierry Reding <treding@nvidia.com>
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This function implements the common buffer object allocation used for
both allocation and import paths.
Signed-off-by: Thierry Reding <treding@nvidia.com>
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Make sure the DSI PHY_TIMING and BTA_TIMING registers are initialized
when the clocks are set up as opposed to when the output is enabled.
This makes sure that the PHY timings are properly set up when the panel
is prepared and that DCS commands sent at that time use the appropriate
timings.
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Thierry Reding <treding@nvidia.com>
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Using the symbolic constant instantly provides a lot more context.
Signed-off-by: Thierry Reding <treding@nvidia.com>
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Using the symbolic constant instantly provides a lot more context.
Signed-off-by: Thierry Reding <treding@nvidia.com>
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