kernel/linux.git/drivers/gpu/drm/msm/msm_rd.c, branch v6.3

drm/msm/rd: Fix FIFO-full deadlock

2022-08-15T17:19:53+00:00

If the previous thing cat'ing $debugfs/rd left the FIFO full, then subsequent open could deadlock in rd_write() (because open is blocked, not giving a chance for read() to consume any data in the FIFO). Also it is generally a good idea to clear out old data from the FIFO. Signed-off-by: Rob Clark Patchwork: https://patchwork.freedesktop.org/patch/496706/ Link: https://lore.kernel.org/r/20220807160901.2353471-2-robdclark@gmail.com

drm/msm: Add support for pointer params

2022-04-21T22:01:08+00:00

The 64b value field is already suffient to hold a pointer instead of immediate, but we also need a length field. Signed-off-by: Rob Clark Link: https://lore.kernel.org/r/20220317165144.222101-2-robdclark@gmail.com Signed-off-by: Rob Clark

drm/msm/gpu: Add ctx to get_param()

2022-02-20T17:44:43+00:00

Prep work for next patch. Signed-off-by: Rob Clark Link: https://lore.kernel.org/r/20220201161618.778455-2-robdclark@gmail.com Reviewed-by: Emma Anholt Signed-off-by: Rob Clark

drm/msm/rd: Add chip-id

2022-02-18T15:32:52+00:00

For newer devices which deprecate gpu-id and do matching based on chip-id, we need this information in cmdstream dumps so that the decoding tools know how to decode them. Signed-off-by: Rob Clark Reviewed-by: Dmitry Baryshkov Link: https://lore.kernel.org/r/20220114185742.283539-1-robdclark@gmail.com Signed-off-by: Dmitry Baryshkov

drm/msm: Remove struct_mutex usage

2021-11-28T17:50:33+00:00

The remaining struct_mutex usage is just to serialize various gpu related things (submit/retire/recover/fault/etc), so replace struct_mutex with gpu->lock. Signed-off-by: Rob Clark Link: https://lore.kernel.org/r/20211109181117.591148-4-robdclark@gmail.com Signed-off-by: Rob Clark

drm/msm: Conversion to drm scheduler

2021-07-28T16:19:00+00:00

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 Acked-by: Christian König Link: https://lore.kernel.org/r/20210728010632.2633470-10-robdclark@gmail.com Signed-off-by: Rob Clark

drm/msm/gem: Switch over to obj->resv for locking

2020-11-05T00:00:56+00:00

This also converts the special msm_gem_get_vaddr_active() to expect the lock to already be held. There are two call-sites for this, one already has the lock held, so it is more straightforward to just open-code the locking for the other caller. Signed-off-by: Rob Clark Reviewed-by: Kristian H. Kristensen Signed-off-by: Rob Clark

drm/msm: Fix undefined "rd_full" link error

2020-05-18T16:26:32+00:00

rd_full should be defined outside the CONFIG_DEBUG_FS region, in order to be able to link the msm driver even when CONFIG_DEBUG_FS is disabled. Fixes: e515af8d4a6f ("drm/msm: devcoredump should dump MSM_SUBMIT_BO_DUMP buffers") Reported-by: Stephen Rothwell Signed-off-by: Bjorn Andersson Reviewed-by: Rob Clark Signed-off-by: Rob Clark

drm/msm: devcoredump should dump MSM_SUBMIT_BO_DUMP buffers

2020-03-19T19:18:44+00:00

Also log buffers with the DUMP flag set, to ensure we capture all useful cmdstream in crashdump state with modern mesa. Otherwise we miss out on the contents of "state object" cmdstream buffers. v2: add missing 'inline' Signed-off-by: Rob Clark Reviewed-by: Jordan Crouse

drm/msm: always dump buffer base/size

2019-11-02T16:43:24+00:00

Even if we are not dumping the buffer's contents, it is useful to log their base address and size. This makes it easier to see when different gpu pointers point to a single buffer, for example higher mipmap levels of a single texture. Signed-off-by: Rob Clark