Some more Panthor fixes #210
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The user is likely to leave all the drm_panthor_obj_array fields to zero when the array is empty, which will cause an EINVAL failure. v2: - Added R-bs Fixes: 4bdca11 ("drm/panthor: Add the driver frontend block") Signed-off-by: Boris Brezillon <[email protected]> Reviewed-by: Liviu Dudau <[email protected]> Reviewed-by: Steven Price <[email protected]> Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
A sync-only job is meant to provide a synchronization point on a queue, so we can't return a NULL fence there, we have to add a signal operation to the command stream which executes after all other previously submitted jobs are done. v2: - Fixed a UAF bug - Added R-bs Fixes: de85488 ("drm/panthor: Add the scheduler logical block") Signed-off-by: Boris Brezillon <[email protected]> Reviewed-by: Liviu Dudau <[email protected]> Reviewed-by: Steven Price <[email protected]> Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
If a queue is already assigned to the hardware, then a newly submitted job can start straight away without waiting for the tick. However in this case the devfreq infrastructure isn't notified that the GPU is busy. By the time the tick happens the job might well have finished and no time will be accounted for the GPU being busy. Fix this by recording the GPU as busy directly in queue_run_job() in the case where there is a CSG assigned and therefore we just ring the doorbell. Fixes: de85488 ("drm/panthor: Add the scheduler logical block") Signed-off-by: Steven Price <[email protected]> Reviewed-by: Boris Brezillon <[email protected]> Reviewed-by: Liviu Dudau <[email protected]> Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
In the off-chance that waiting for the firmware to signal its booted status timed out in the fast reset path, one must flush the cache lines for the entire FW VM address space before reloading the regions, otherwise stale values eventually lead to a scheduler job timeout. Signed-off-by: Adrián Larumbe <[email protected]>
amazingfate
approved these changes
Jul 19, 2024
nyanmisaka
approved these changes
Jul 19, 2024
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Hi, I'm not sure this is related, but very recently I've lost panthor. This was built with Not saying this is to blame, but has anyone an idea? |
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We can see panthor driver is loaded from dmesg. |
6 tasks
Confirmed, this works. Thanks! |
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The first two commits are actually present in the kernel 6.10 release, so no reason not to include them.
The third one is present in
drm-tip, as well as infor-linux-next, and is authored by an ARM engineer, so I'd expect it to land soon.The final one is found in the Collabora branch, and is the only one I have some doubts about. But, as I didn't squash it all this time, it would be easy to revert if needed.