During board bringups its useful to have a DSI test pattern
generator to isolate a DPU vs a DSI issue and focus on the relevant
hardware block.
To facilitate this, add an API which triggers the DSI controller
test pattern. The expected output is a rectangular checkered pattern.
This has been validated on a single DSI video mode panel by calling it
right after drm_panel_enable() which is also the ideal location to use
this as the DSI host and the panel have been initialized by then.
Further validation on dual DSI and command mode panel is pending.
If there are any fix ups needed for those, it shall be applied on top
of this change.
Changes in v2:
- generate the new dsi.xml.h and update the bitfield names
Signed-off-by: Abhinav Kumar <abhinavk@codeaurora.org>
Link: https://lore.kernel.org/r/1626922232-29105-2-git-send-email-abhinavk@codeaurora.org
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Rob Clark <robdclark@chromium.org>
msm_atomic is doing vblank get/put's already,
currently there no need to duplicate the effort in MDP4
Fix warning:
...
WARNING: CPU: 3 PID: 79 at drivers/gpu/drm/drm_vblank.c:1194 drm_vblank_put+0x1cc/0x1d4
...
and multiple vblank time-outs:
...
msm 5100000.mdp: vblank time out, crtc=1
...
Tested on Nexus 7 2013 (deb), LTS 5.10.50.
Introduced by: 119ecb7fd3 ("drm/msm/mdp4: request vblank during modeset")
Signed-off-by: David Heidelberg <david@ixit.cz>
Link: https://lore.kernel.org/r/20210715060925.7880-1-david@ixit.cz
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Rob Clark <robdclark@chromium.org>
On a5xx and a6xx devices that are using CP_WHERE_AM_I to update a
ringbuffer read-ptr shadow value, periodically emit a CP_WHERE_AM_I
every 32 commands, so that a later submit waiting for ringbuffer
space to become available sees partial progress, rather than not
seeing rptr advance at all until the GPU gets to the end of the
submit that it is currently chewing on.
Signed-off-by: Rob Clark <robdclark@chromium.org>
Acked-by: Jordan Crouse <jordan@cosmicpenguin.net>
Link: https://lore.kernel.org/r/20210428193654.1498482-3-robdclark@gmail.com
Signed-off-by: Rob Clark <robdclark@chromium.org>
Moving the driver-specific mmap code into a GEM object function allows
for using DRM helpers for various mmap callbacks.
The respective msm functions are being removed. The file_operations
structure fops is now being created by the helper macro
DEFINE_DRM_GEM_FOPS().
v2:
* rebase onto latest upstream
* remove declaration of msm_gem_mmap_obj() from msm_fbdev.c
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://lore.kernel.org/r/20210706084753.8194-1-tzimmermann@suse.de
[squash in missing VM_DONTEXPAND flag]
Signed-off-by: Rob Clark <robdclark@chromium.org>
This patch adds support for the gpu found in the Snapdragon 7c Gen 3
compute platform. This gpu is similar to the exisiting a660 gpu with
minor delta in the programing sequence. As the Adreno GPUs are moving
away from a numeric chipid based naming scheme to a string, it was
decided to use 0x06030500 as the chip id of this gpu to communicate
to the userspace driver.
Signed-off-by: Akhil P Oommen <akhilpo@codeaurora.org>
Link: https://lore.kernel.org/r/20210730011945.v4.3.I610377db0934b6b7deda532ec2bf786a02c38c01@changeid
Signed-off-by: Rob Clark <robdclark@chromium.org>
The drm/scheduler provides additional prioritization on top of that
provided by however many number of ringbuffers (each with their own
priority level) is supported on a given generation. Expose the
additional levels of priority to userspace and map the userspace
priority back to ring (first level of priority) and schedular priority
(additional priority levels within the ring).
Signed-off-by: Rob Clark <robdclark@chromium.org>
Acked-by: Christian König <christian.koenig@amd.com>
Link: https://lore.kernel.org/r/20210728010632.2633470-13-robdclark@gmail.com
Signed-off-by: Rob Clark <robdclark@chromium.org>
This was only used to detect userspace including the same bo multiple
times in a submit. But ww_mutex can already tell us this.
When we drop struct_mutex around the submit ioctl, we'd otherwise need
to lock the bo before adding it to the bo_list. But since ww_mutex can
already tell us this, it is simpler just to remove the bo_list.
Signed-off-by: Rob Clark <robdclark@chromium.org>
Link: https://lore.kernel.org/r/20210728010632.2633470-11-robdclark@gmail.com
Signed-off-by: Rob Clark <robdclark@chromium.org>
For existing adrenos, there is one or more ringbuffer, depending on
whether preemption is supported. When preemption is supported, each
ringbuffer has it's own priority. A submitqueue (which maps to a
gl context or vk queue in userspace) is mapped to a specific ring-
buffer at creation time, based on the submitqueue's priority.
Each ringbuffer has it's own drm_gpu_scheduler. Each submitqueue
maps to a drm_sched_entity. And each submit maps to a drm_sched_job.
Closes: https://gitlab.freedesktop.org/drm/msm/-/issues/4
Signed-off-by: Rob Clark <robdclark@chromium.org>
Acked-by: Christian König <christian.koenig@amd.com>
Link: https://lore.kernel.org/r/20210728010632.2633470-10-robdclark@gmail.com
Signed-off-by: Rob Clark <robdclark@chromium.org>
Previously the (non-fd) fence returned from submit ioctl was a raw
seqno, which is scoped to the ring. But from UABI standpoint, the
ioctls related to seqno fences all specify a submitqueue. We can
take advantage of that to replace the seqno fences with a cyclic idr
handle.
This is in preperation for moving to drm scheduler, at which point
the submit ioctl will return after queuing the submit job to the
scheduler, but before the submit is written into the ring (and
therefore before a ring seqno has been assigned). Which means we
need to replace the dma_fence that userspace may need to wait on
with a scheduler fence.
Signed-off-by: Rob Clark <robdclark@chromium.org>
Acked-by: Christian König <christian.koenig@amd.com>
Link: https://lore.kernel.org/r/20210728010632.2633470-8-robdclark@gmail.com
Signed-off-by: Rob Clark <robdclark@chromium.org>
This adds a few things to try and make frequency scaling better match
the workload:
1) Longer polling interval to avoid whip-lashing between too-high and
too-low frequencies in certain workloads, like mobile games which
throttle themselves to 30fps.
Previously our polling interval was short enough to let things
ramp down to minimum freq in the "off" frame, but long enough to
not react quickly enough when rendering started on the next frame,
leading to uneven frame times. (Ie. rather than a consistent 33ms
it would alternate between 16/33/48ms.)
2) Awareness of when the GPU is active vs idle. Since we know when
the GPU is active vs idle, we can clamp the frequency down to the
minimum while it is idle. (If it is idle for long enough, then
the autosuspend delay will eventually kick in and power down the
GPU.)
Since devfreq has no knowledge of powered-but-idle, this takes a
small bit of trickery to maintain a "fake" frequency while idle.
This, combined with the longer polling period allows devfreq to
arrive at a reasonable "active" frequency, while still clamping
to minimum freq when idle to reduce power draw.
3) Boost. Because simple_ondemand needs to see a certain threshold
of busyness to ramp up, we could end up needing multiple polling
cycles before it reacts appropriately on interactive workloads
(ex. scrolling a web page after reading for some time), on top
of the already lengthened polling interval, when we see a idle
to active transition after a period of idle time we boost the
frequency that we return to.
Signed-off-by: Rob Clark <robdclark@chromium.org>
Link: https://lore.kernel.org/r/20210726144653.2180096-4-robdclark@gmail.com
Signed-off-by: Rob Clark <robdclark@chromium.org>
gcc doesn't care, but clang quite reasonably pointed out that the recent
commit e9ba16e68c ("smpboot: Mark idle_init() as __always_inlined to
work around aggressive compiler un-inlining") did some really odd
things:
kernel/smpboot.c:50:20: warning: duplicate 'inline' declaration specifier [-Wduplicate-decl-specifier]
static inline void __always_inline idle_init(unsigned int cpu)
^
which not only has that duplicate inlining specifier, but the new
__always_inline was put in the wrong place of the function definition.
We put the storage class specifiers (ie things like "static" and
"extern") first, and the type information after that. And while the
compiler may not care, we put the inline specifier before the types.
So it should be just
static __always_inline void idle_init(unsigned int cpu)
instead.
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Pull powerpc fixes from Michael Ellerman:
- Fix guest to host memory corruption in H_RTAS due to missing nargs
check.
- Fix guest triggerable host crashes due to bad handling of nested
guest TM state.
- Fix possible crashes due to incorrect reference counting in
kvm_arch_vcpu_ioctl().
- Two commits fixing some regressions in KVM transactional memory
handling introduced by the recent rework of the KVM code.
Thanks to Nicholas Piggin, Alexey Kardashevskiy, and Michael Neuling.
* tag 'powerpc-5.14-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
KVM: PPC: Book3S HV Nested: Sanitise H_ENTER_NESTED TM state
KVM: PPC: Book3S: Fix H_RTAS rets buffer overflow
KVM: PPC: Fix kvm_arch_vcpu_ioctl vcpu_load leak
KVM: PPC: Book3S: Fix CONFIG_TRANSACTIONAL_MEM=n crash
KVM: PPC: Book3S HV P9: Fix guest TM support
Pull timer fixes from Thomas Gleixner:
"A small set of timer related fixes:
- Plug a race between rearm and process tick in the posix CPU timers
code
- Make the optimization to avoid recalculation of the next timer
interrupt work correctly when there are no timers pending"
* tag 'timers-urgent-2021-07-25' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
timers: Fix get_next_timer_interrupt() with no timers pending
posix-cpu-timers: Fix rearm racing against process tick
