Add an usage for kernel submissions. Waiting for those are mandatory for
dynamic DMA-bufs.
As a precaution this patch also changes all occurrences where fences are
added as part of memory management in TTM, VMWGFX and i915 to use the
new value because it now becomes possible for drivers to ignore fences
with the WRITE usage.
v2: use "must" in documentation, fix whitespaces
v3: separate out some driver changes and better document why some
changes should still be part of this patch.
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20220407085946.744568-5-christian.koenig@amd.com
Instead of distingting between shared and exclusive fences specify
the fence usage while adding fences.
Rework all drivers to use this interface instead and deprecate the old one.
v2: some kerneldoc comments suggested by Daniel
v3: fix a missing case in radeon
v4: rebase on nouveau changes, fix lockdep and temporary disable warning
v5: more documentation updates
v6: separate internal dma_resv changes from this patch, avoids to
disable warning temporary, rebase on upstream changes
v7: fix missed case in lima driver, minimize changes to i915_gem_busy_ioctl
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20220407085946.744568-3-christian.koenig@amd.com
This change adds the dma_resv_usage enum and allows us to specify why a
dma_resv object is queried for its containing fences.
Additional to that a dma_resv_usage_rw() helper function is added to aid
retrieving the fences for a read or write userspace submission.
This is then deployed to the different query functions of the dma_resv
object and all of their users. When the write paratermer was previously
true we now use DMA_RESV_USAGE_WRITE and DMA_RESV_USAGE_READ otherwise.
v2: add KERNEL/OTHER in separate patch
v3: some kerneldoc suggestions by Daniel
v4: some more kerneldoc suggestions by Daniel, fix missing cases lost in
the rebase pointed out by Bas.
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20220407085946.744568-2-christian.koenig@amd.com
Don't mark static functions as kernel-doc.
Prevents multiple kernel-doc build warnings:
drivers/gpu/drm/sti/sti_hdmi.c:187: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst
* HDMI interrupt handler threaded
drivers/gpu/drm/sti/sti_hdmi.c:219: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst
* HDMI interrupt handler
drivers/gpu/drm/sti/sti_hdmi.c:241: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst
* Set hdmi active area depending on the drm display mode selected
drivers/gpu/drm/sti/sti_hdmi.c:262: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst
* Overall hdmi configuration
drivers/gpu/drm/sti/sti_hdmi.c:340: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst
* Helper to concatenate infoframe in 32 bits word
drivers/gpu/drm/sti/sti_hdmi.c:357: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst
* Helper to write info frame
drivers/gpu/drm/sti/sti_hdmi.c:427: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst
* Prepare and configure the AVI infoframe
drivers/gpu/drm/sti/sti_hdmi.c:470: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst
* Prepare and configure the AUDIO infoframe
drivers/gpu/drm/sti/sti_hdmi.c:555: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst
* Software reset of the hdmi subsystem
Fixes: 5402626c83 ("drm: sti: add HDMI driver")
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Aditya Srivastava <yashsri421@gmail.com>
Cc: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Cc: Alain Volmat <alain.volmat@foss.st.com>
Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel@ffwll.ch>
Acked-by: Alain Volmat <alain.volmat@foss.st.com>
Signed-off-by: Philippe Cornu <philippe.cornu@foss.st.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220326235132.25192-1-rdunlap@infradead.org
The two bugs are here:
if (encoder) {
if (bridge && bridge->timings)
The list iterator value 'encoder/bridge' will *always* be set and
non-NULL by drm_for_each_encoder()/list_for_each_entry(), so it is
incorrect to assume that the iterator value will be NULL if the
list is empty or no element is found.
To fix the bug, use a new variable '*_iter' as the list iterator,
while use the old variable 'encoder/bridge' as a dedicated pointer
to point to the found element.
Cc: stable@vger.kernel.org
Fixes: 99e360442f ("drm/stm: Fix bus_flags handling")
Signed-off-by: Xiaomeng Tong <xiam0nd.tong@gmail.com>
Acked-by: Raphael Gallais-Pou <raphael.gallais-pou@foss.st.com>
Signed-off-by: Philippe Cornu <philippe.cornu@foss.st.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220327055355.3808-1-xiam0nd.tong@gmail.com
atomic_flush will be called for each CRTC even if they aren't enabled.
The whole code we have there will thus run without a properly affected
channel, which can then result in all sorts of weird behaviour.
Fortunately, the DRM_PLANE_COMMIT_ACTIVE_ONLY flag will skip the CRTC
atomic_begin and atomic_flush, and the planes atomic_update, if they
aren't enabled.
Our plane atomic_update is a nop, and atomic_begin will copy the current
HVS channel to the vc4_crtc structure for the interrupt handler to
consume, but the handler won't run if the CRTC is disabled. So in the
end, it will only skip our CRTC atomic_flush, which is what we want.
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://lore.kernel.org/r/20220331143744.777652-7-maxime@cerno.tech
The vc4_hvs_update_dlist function mostly deals with setting up the
vblank events and setting up the dlist entry pointer to our current
active one.
We'll want to do the former separately from the vblank handling in later
patches, so let's move it to a function of its own.
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://lore.kernel.org/r/20220331143744.777652-6-maxime@cerno.tech
In order to get the field currently being output, the driver has been
using the display FIFO frame count in the HVS, reading a 6-bit field at
the offset 12 in the DISPSTATx register.
While that field is indeed at that location for the FIFO 1 and 2, the
one for the FIFO0 is actually in the DISPSTAT1 register, at the offset
18.
Fixes: e538092cb1 ("drm/vc4: Enable precise vblank timestamping for interlaced modes.")
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://lore.kernel.org/r/20220331143744.777652-3-maxime@cerno.tech
During a commit, the core clock, which feeds the HVS, needs to run at
a minimum of 500MHz.
While doing that commit, we can also change the mode to one that
requires a higher core clock, so we take the core clock rate associated
to that new state into account for that boost.
However, the old state also needs to be taken into account if it
requires a core clock higher that the new one and our 500MHz limit,
since it's still live in hardware at the beginning of our commit.
Fixes: 16e101051f ("drm/vc4: Increase the core clock based on HVS load")
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://lore.kernel.org/r/20220331143744.777652-2-maxime@cerno.tech
Following the introduction of bridge_atomic_enable in the ingenic
drm driver, the crtc is enabled between .prepare and .enable, if
it exists. Add it so the backlight is only enabled after the crtc is, to
avoid graphical issues.
As we're moving the "sleep out" command out of the init sequence
into .enable for the ABT, we need to switch the regmap cache
to REGCACHE_FLAT to be able to use regmap_set_bits, given this
panel registers are write-ony and read as 0.
Signed-off-by: Christophe Branchereau <cbranchereau@gmail.com>
Signed-off-by: Paul Cercueil <paul@crapouillou.net>
[pcercuei: Remove empty line after opening brace]
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20220321133651.291592-4-cbranchereau@gmail.com
The bug is here:
if (nvkm_cstate_valid(clk, cstate, max_volt, clk->temp))
return cstate;
The list iterator value 'cstate' will *always* be set and non-NULL
by list_for_each_entry_from_reverse(), so it is incorrect to assume
that the iterator value will be unchanged if the list is empty or no
element is found (In fact, it will be a bogus pointer to an invalid
structure object containing the HEAD). Also it missed a NULL check
at callsite and may lead to invalid memory access after that.
To fix this bug, just return 'encoder' when found, otherwise return
NULL. And add the NULL check.
Cc: stable@vger.kernel.org
Fixes: 1f7f3d91ad ("drm/nouveau/clk: Respect voltage limits in nvkm_cstate_prog")
Signed-off-by: Xiaomeng Tong <xiam0nd.tong@gmail.com>
Reviewed-by: Lyude Paul <lyude@redhat.com>
Signed-off-by: Lyude Paul <lyude@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220327075824.11806-1-xiam0nd.tong@gmail.com
Pull more tracing updates from Steven Rostedt:
- Rename the staging files to give them some meaning. Just
stage1,stag2,etc, does not show what they are for
- Check for NULL from allocation in bootconfig
- Hold event mutex for dyn_event call in user events
- Mark user events to broken (to work on the API)
- Remove eBPF updates from user events
- Remove user events from uapi header to keep it from being installed.
- Move ftrace_graph_is_dead() into inline as it is called from hot
paths and also convert it into a static branch.
* tag 'trace-v5.18-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
tracing: Move user_events.h temporarily out of include/uapi
ftrace: Make ftrace_graph_is_dead() a static branch
tracing: Set user_events to BROKEN
tracing/user_events: Remove eBPF interfaces
tracing/user_events: Hold event_mutex during dyn_event_add
proc: bootconfig: Add null pointer check
tracing: Rename the staging files for trace_events
