diff options
| author | Rob Clark <robdclark@gmail.com> | 2017-12-13 15:12:57 -0500 |
|---|---|---|
| committer | Rob Clark <robdclark@gmail.com> | 2018-02-20 10:41:20 -0500 |
| commit | 6a8bd08d0465b2b8d214007c58598e2c15312296 (patch) | |
| tree | 2f776c4b220a2885a4de8f10182a63bbd1c9d5b7 /drivers/gpu/drm/msm/msm_gem_submit.c | |
| parent | 331dc0bc195bb77fcbe60b4513464b406a6d20cb (diff) | |
drm/msm: add sudo flag to submit ioctl
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 <robdclark@gmail.com>
Diffstat (limited to 'drivers/gpu/drm/msm/msm_gem_submit.c')
| -rw-r--r-- | drivers/gpu/drm/msm/msm_gem_submit.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/gpu/drm/msm/msm_gem_submit.c b/drivers/gpu/drm/msm/msm_gem_submit.c index b8dc8f96caf2..7bd83e0afa97 100644 --- a/drivers/gpu/drm/msm/msm_gem_submit.c +++ b/drivers/gpu/drm/msm/msm_gem_submit.c @@ -430,6 +430,12 @@ int msm_ioctl_gem_submit(struct drm_device *dev, void *data, if (MSM_PIPE_FLAGS(args->flags) & ~MSM_SUBMIT_FLAGS) return -EINVAL; + if (args->flags & MSM_SUBMIT_SUDO) { + if (!IS_ENABLED(CONFIG_DRM_MSM_GPU_SUDO) || + !capable(CAP_SYS_RAWIO)) + return -EINVAL; + } + queue = msm_submitqueue_get(ctx, args->queueid); if (!queue) return -ENOENT; @@ -471,6 +477,9 @@ int msm_ioctl_gem_submit(struct drm_device *dev, void *data, goto out_unlock; } + if (args->flags & MSM_SUBMIT_SUDO) + submit->in_rb = true; + ret = submit_lookup_objects(submit, args, file); if (ret) goto out; |