linux-dev/drivers/gpu/drm/msm/adreno, branch master

drm/msm/a6xx: Remove state objects from list before freeing

2022-10-14T16:33:12Z

Technically it worked as it was before, only because it was using the _safe version of the iterator. But it is sloppy practice to leave dangling pointers. Signed-off-by: Rob Clark Reviewed-by: Chia-I Wu Reviewed-by: Akhil P Oommen Patchwork: https://patchwork.freedesktop.org/patch/507017/ Link: https://lore.kernel.org/r/20221013225520.371226-4-robdclark@gmail.com

drm/msm/a6xx: Skip snapshotting unused GMU buffers

2022-10-14T16:33:12Z

Some buffers are unused on certain sub-generations of a6xx. So just skip them. Signed-off-by: Rob Clark Reviewed-by: Chia-I Wu Reviewed-by: Akhil P Oommen Patchwork: https://patchwork.freedesktop.org/patch/507013/ Link: https://lore.kernel.org/r/20221013225520.371226-3-robdclark@gmail.com

drm/msm/a6xx: Fix kvzalloc vs state_kcalloc usage

2022-10-14T16:32:22Z

adreno_show_object() is a trap! It will re-allocate the pointer it is passed on first call, when the data is ascii85 encoded, using kvmalloc/ kvfree(). Which means the data *passed* to it must be kvmalloc'd, ie. we cannot use the state_kcalloc() helper. This partially reverts commit ec8f1813bf8d ("drm/msm/a6xx: Replace kcalloc() with kvzalloc()"), but adds the missing kvfree() to fix the memory leak that was present previously. And adds a warning comment. Fixes: ec8f1813bf8d ("drm/msm/a6xx: Replace kcalloc() with kvzalloc()") Closes: https://gitlab.freedesktop.org/drm/msm/-/issues/20 Signed-off-by: Rob Clark Reviewed-by: Chia-I Wu Reviewed-by: Akhil P Oommen Patchwork: https://patchwork.freedesktop.org/patch/507014/ Link: https://lore.kernel.org/r/20221013225520.371226-2-robdclark@gmail.com

drm/msm/gpu: Fix crash during system suspend after unbind

2022-09-30T16:01:41Z

In adreno_unbind, we should clean up gpu device's drvdata to avoid accessing a stale pointer during system suspend. Also, check for NULL ptr in both system suspend/resume callbacks. Signed-off-by: Akhil P Oommen Patchwork: https://patchwork.freedesktop.org/patch/505075/ Link: https://lore.kernel.org/r/20220928124830.2.I5ee0ac073ccdeb81961e5ec0cce5f741a7207a71@changeid Signed-off-by: Rob Clark

drm/msm/a6xx: Replace kcalloc() with kvzalloc()

2022-09-30T16:01:41Z

In order to reduce chance of allocation failure while capturing a6xx gpu state, use kvzalloc() instead of kcalloc() in state_kcalloc(). Indirectly, this patch helps to fix leaking memory allocated for gmu_debug object. Fixes: b859f9b009b (drm/msm/gpu: Snapshot GMU debug buffer) Signed-off-by: Akhil P Oommen Patchwork: https://patchwork.freedesktop.org/patch/505074/ Link: https://lore.kernel.org/r/20220928124830.1.I8ea24a8d586b4978823b848adde000f92f74d5c2@changeid Signed-off-by: Rob Clark

drm/msm/a6xx: Handle GMU prepare-slumber hfi failure

2022-09-01T15:06:55Z

When prepare-slumber hfi fails, we should follow a6xx_gmu_force_off() sequence. Signed-off-by: Akhil P Oommen Patchwork: https://patchwork.freedesktop.org/patch/498401/ Link: https://lore.kernel.org/r/20220819015030.v5.7.I54815c7c36b80d4725cd054e536365250454452f@changeid Signed-off-by: Rob Clark

drm/msm/a6xx: Improve gpu recovery sequence

2022-08-28T16:29:27Z

We can do a few more things to improve our chance at a successful gpu recovery, especially during a hangcheck timeout: 1. Halt CP and GMU core 2. Do RBBM GBIF HALT sequence 3. Do a soft reset of GPU core Signed-off-by: Akhil P Oommen Patchwork: https://patchwork.freedesktop.org/patch/498400/ Link: https://lore.kernel.org/r/20220819015030.v5.6.Idf2ba51078e87ae7ceb75cc77a5bd4ff2bd31eab@changeid Signed-off-by: Rob Clark

drm/msm/a6xx: Ensure CX collapse during gpu recovery

2022-08-28T16:29:27Z

Because there could be transient votes from other drivers/tz/hyp which may keep the cx gdsc enabled, we should poll until cx gdsc collapses. We can use the reset framework to poll for cx gdsc collapse from gpucc clk driver. This feature requires support from the platform's gpucc driver. Signed-off-by: Akhil P Oommen Reviewed-by: Dmitry Baryshkov Reviewed-by: Philipp Zabel Patchwork: https://patchwork.freedesktop.org/patch/498397/ Link: https://lore.kernel.org/r/20220819015030.v5.5.I176567525af2b9439a7e485d0ca130528666a55c@changeid Signed-off-by: Rob Clark

drm/msm: Fix cx collapse issue during recovery

2022-08-28T16:29:27Z

There are some hardware logic under CX domain. For a successful recovery, we should ensure cx headswitch collapses to ensure all the stale states are cleard out. This is especially true to for a6xx family where we can GMU co-processor. Currently, cx doesn't collapse due to a devlink between gpu and its smmu. So the *struct gpu device* needs to be runtime suspended to ensure that the iommu driver removes its vote on cx gdsc. Signed-off-by: Akhil P Oommen Patchwork: https://patchwork.freedesktop.org/patch/498398/ Link: https://lore.kernel.org/r/20220819015030.v5.4.I4ac27a0b34ea796ce0f938bb509e257516bc6f57@changeid Signed-off-by: Rob Clark

drm/msm: De-open-code some CP_EVENT_WRITE

2022-08-28T16:28:28Z

Replace some open coding to improve readability. Signed-off-by: Rob Clark Reviewed-by: Dmitry Baryshkov Patchwork: https://patchwork.freedesktop.org/patch/499272/ Link: https://lore.kernel.org/r/20220821155441.1092134-1-robdclark@gmail.com