kernel/include/uapi/drm/msm_drm.h, branch linux-5.1.y

drm/msm: add uapi to get/set debug name

2018-12-11T18:07:05Z

Add UAPI to get/set GEM objects' debug name. Signed-off-by: Rob Clark

drm/msm: rework GEM_INFO ioctl

2018-12-11T18:07:04Z

Prep work to add a way to get/set the GEM objects debug name. Signed-off-by: Rob Clark

drm/msm/gpu: add submit flag to hint which buffers should be dumped

2018-12-11T18:07:04Z

To lower CPU overhead, future userspace will be switching to pinning iova and avoiding the use of relocs, and only include cmds table entries for IB1 level cmdstream (but not IB2 or state-groups). This leaves the kernel unsure what to dump for rd/hangrd cmdstream dumping. So add a MSM_SUBMIT_BO_DUMP flag so userspace can indicate buffers that contain cmdstream (or are otherwise important to dump). Signed-off-by: Rob Clark

drm/msm: add sudo flag to submit ioctl

2018-02-20T15:41:20Z

This flags cause cmdstream to be executed from the ringbuffer (RB) instead of IB1. Normally not something you'd ever want to do, but it is super useful for firmware debugging. Hidden behind CAP_SYS_RAWIO and a default=n kconfig option which depends on EXPERT (and has a suitably scary warning), to prevent it from being used on accident. Signed-off-by: Rob Clark

drm/msm: Add a parameter query for the number of ringbuffers

2017-10-28T15:01:37Z

In order to manage ringbuffer priority to its fullest userspace should know how many ringbuffers it has to work with. Add a parameter to return the number of active rings. Signed-off-by: Jordan Crouse Signed-off-by: Rob Clark

drm/msm: Support multiple ringbuffers

2017-10-28T15:01:36Z

Add the infrastructure to support the idea of multiple ringbuffers. Assign each ringbuffer an id and use that as an index for the various ring specific operations. The biggest delta is to support legacy fences. Each fence gets its own sequence number but the legacy functions expect to use a unique integer. To handle this we return a unique identifier for each submission but map it to a specific ring/sequence under the covers. Newer users use a dma_fence pointer anyway so they don't care about the actual sequence ID or ring. The actual mechanics for multiple ringbuffers are very target specific so this code just allows for the possibility but still only defines one ringbuffer for each target family. Signed-off-by: Jordan Crouse Signed-off-by: Rob Clark

drm/msm: Add per-instance submit queues

2017-10-28T15:01:35Z

Currently the behavior of a command stream is provided by the user application during submission and the application is expected to internally maintain the settings for each 'context' or 'rendering queue' and specify the correct ones. This works okay for simple cases but as applications become more complex we will want to set context specific flags and do various permission checks to allow certain contexts to enable additional privileges. Add kernel-side submit queues to be analogous to 'contexts' or 'rendering queues' on the application side. Each file descriptor instance will maintain its own list of queues. Queues cannot be shared between file descriptors. For backwards compatibility context id '0' is defined as a default context specifying no priority and no special flags. This is intended to be the usual configuration for 99% of applications so that a garden variety application can function correctly without creating a queue. Only those applications requiring the specific benefit of different queues need create one. Signed-off-by: Jordan Crouse Signed-off-by: Rob Clark

drm/msm: Remove user from u64 data types

2017-08-01T23:11:48Z

__user should be used to identify user pointers and not __u64 variables containing pointers. Signed-off-by: Jordan Crouse Signed-off-by: Rob Clark

drm/msm: Add hint to DRM_IOCTL_MSM_GEM_INFO to return an object IOVA

2017-06-16T15:15:47Z

Modify the 'pad' member of struct drm_msm_gem_info to 'flags'. If the user sets 'flags' to non-zero it means that they want a IOVA for the GEM object instead of a mmap() offset. Return the iova in the 'offset' member. Signed-off-by: Jordan Crouse [robclark: s/hint/flags in commit msg] Signed-off-by: Rob Clark

drm/msm: Remove DRM_MSM_NUM_IOCTLS

2017-06-16T15:15:46Z

The ioctl array is sparsely populated but the compiler will make sure that it is sufficiently sized for all the values that we have so we can safely use ARRAY_SIZE() instead of having a constantly changing #define in the uapi header. Signed-off-by: Jordan Crouse Signed-off-by: Rob Clark