diff options
author | Rob Clark <robdclark@chromium.org> | 2021-07-28 04:06:06 +0300 |
---|---|---|
committer | Rob Clark <robdclark@chromium.org> | 2021-07-28 04:09:17 +0300 |
commit | 375f9a63a66baeb63ecc7d5fc740b9f02891ceda (patch) | |
tree | 445877bcbc5ecf890d2418ec1db6f05b5671ca65 /drivers/gpu/drm/msm | |
parent | 9bc95570175a7fbca29d86d22c54bbf399f4ad5a (diff) | |
download | linux-375f9a63a66baeb63ecc7d5fc740b9f02891ceda.tar.xz |
drm/msm: Docs and misc cleanup
Fix a couple incorrect or misspelt comments, and add submitqueue doc
comment.
Signed-off-by: Rob Clark <robdclark@chromium.org>
Acked-by: Christian König <christian.koenig@amd.com>
Link: https://lore.kernel.org/r/20210728010632.2633470-2-robdclark@gmail.com
Signed-off-by: Rob Clark <robdclark@chromium.org>
Diffstat (limited to 'drivers/gpu/drm/msm')
-rw-r--r-- | drivers/gpu/drm/msm/msm_gem.h | 3 | ||||
-rw-r--r-- | drivers/gpu/drm/msm/msm_gem_submit.c | 1 | ||||
-rw-r--r-- | drivers/gpu/drm/msm/msm_gpu.h | 15 | ||||
-rw-r--r-- | drivers/gpu/drm/msm/msm_ringbuffer.c | 2 | ||||
-rw-r--r-- | drivers/gpu/drm/msm/msm_submitqueue.c | 9 |
5 files changed, 23 insertions, 7 deletions
diff --git a/drivers/gpu/drm/msm/msm_gem.h b/drivers/gpu/drm/msm/msm_gem.h index 405f8411e395..d69fcb37ce17 100644 --- a/drivers/gpu/drm/msm/msm_gem.h +++ b/drivers/gpu/drm/msm/msm_gem.h @@ -313,8 +313,7 @@ void msm_gem_vunmap(struct drm_gem_object *obj); /* Created per submit-ioctl, to track bo's and cmdstream bufs, etc, * associated with the cmdstream submission for synchronization (and - * make it easier to unwind when things go wrong, etc). This only - * lasts for the duration of the submit-ioctl. + * make it easier to unwind when things go wrong, etc). */ struct msm_gem_submit { struct kref ref; diff --git a/drivers/gpu/drm/msm/msm_gem_submit.c b/drivers/gpu/drm/msm/msm_gem_submit.c index 44f84bfd0c0e..6d46f9275a40 100644 --- a/drivers/gpu/drm/msm/msm_gem_submit.c +++ b/drivers/gpu/drm/msm/msm_gem_submit.c @@ -655,6 +655,7 @@ int msm_ioctl_gem_submit(struct drm_device *dev, void *data, bool has_ww_ticket = false; unsigned i; int ret, submitid; + if (!gpu) return -ENXIO; diff --git a/drivers/gpu/drm/msm/msm_gpu.h b/drivers/gpu/drm/msm/msm_gpu.h index 710c3fedfbf3..96efcb31e502 100644 --- a/drivers/gpu/drm/msm/msm_gpu.h +++ b/drivers/gpu/drm/msm/msm_gpu.h @@ -250,6 +250,21 @@ struct msm_gpu_perfcntr { const char *name; }; +/** + * A submitqueue is associated with a gl context or vk queue (or equiv) + * in userspace. + * + * @id: userspace id for the submitqueue, unique within the drm_file + * @flags: userspace flags for the submitqueue, specified at creation + * (currently unusued) + * @prio: the submitqueue priority + * @faults: the number of GPU hangs associated with this submitqueue + * @ctx: the per-drm_file context associated with the submitqueue (ie. + * which set of pgtables do submits jobs associated with the + * submitqueue use) + * @node: node in the context's list of submitqueues + * @ref: reference count + */ struct msm_gpu_submitqueue { int id; u32 flags; diff --git a/drivers/gpu/drm/msm/msm_ringbuffer.c b/drivers/gpu/drm/msm/msm_ringbuffer.c index 7e92d9532454..054461662af5 100644 --- a/drivers/gpu/drm/msm/msm_ringbuffer.c +++ b/drivers/gpu/drm/msm/msm_ringbuffer.c @@ -32,7 +32,7 @@ struct msm_ringbuffer *msm_ringbuffer_new(struct msm_gpu *gpu, int id, if (IS_ERR(ring->start)) { ret = PTR_ERR(ring->start); - ring->start = 0; + ring->start = NULL; goto fail; } diff --git a/drivers/gpu/drm/msm/msm_submitqueue.c b/drivers/gpu/drm/msm/msm_submitqueue.c index c3d206105d28..e5eef11ed014 100644 --- a/drivers/gpu/drm/msm/msm_submitqueue.c +++ b/drivers/gpu/drm/msm/msm_submitqueue.c @@ -98,17 +98,18 @@ int msm_submitqueue_create(struct drm_device *drm, struct msm_file_private *ctx, return 0; } +/* + * Create the default submit-queue (id==0), used for backwards compatibility + * for userspace that pre-dates the introduction of submitqueues. + */ int msm_submitqueue_init(struct drm_device *drm, struct msm_file_private *ctx) { struct msm_drm_private *priv = drm->dev_private; int default_prio; - if (!ctx) - return 0; - /* * Select priority 2 as the "default priority" unless nr_rings is less - * than 2 and then pick the lowest pirority + * than 2 and then pick the lowest priority */ default_prio = priv->gpu ? clamp_t(uint32_t, 2, 0, priv->gpu->nr_rings - 1) : 0; |