From: Rob Clark robdclark@chromium.org
Move all the locked/active/pinned state handling to msm_gem_submit.c. In particular, for drm/scheduler, we'll need to do all this before pushing the submit job to the scheduler. But while we're at it we can get rid of the dupicate pin and refcnt.
Signed-off-by: Rob Clark robdclark@chromium.org --- drivers/gpu/drm/msm/msm_gem.h | 2 + drivers/gpu/drm/msm/msm_gem_submit.c | 92 ++++++++++++++++++++++------ drivers/gpu/drm/msm/msm_gpu.c | 42 +------------ 3 files changed, 75 insertions(+), 61 deletions(-)
diff --git a/drivers/gpu/drm/msm/msm_gem.h b/drivers/gpu/drm/msm/msm_gem.h index 71ccf87a646b..da3af702a6c8 100644 --- a/drivers/gpu/drm/msm/msm_gem.h +++ b/drivers/gpu/drm/msm/msm_gem.h @@ -361,6 +361,8 @@ static inline void msm_gem_submit_put(struct msm_gem_submit *submit) kref_put(&submit->ref, __msm_gem_submit_destroy); }
+void msm_submit_retire(struct msm_gem_submit *submit); + /* helper to determine of a buffer in submit should be dumped, used for both * devcoredump and debugfs cmdstream dumping: */ diff --git a/drivers/gpu/drm/msm/msm_gem_submit.c b/drivers/gpu/drm/msm/msm_gem_submit.c index 8abd743adfb0..4f02fa3c78f9 100644 --- a/drivers/gpu/drm/msm/msm_gem_submit.c +++ b/drivers/gpu/drm/msm/msm_gem_submit.c @@ -23,8 +23,8 @@
/* make sure these don't conflict w/ MSM_SUBMIT_BO_x */ #define BO_VALID 0x8000 /* is current addr in cmdstream correct/valid? */ -#define BO_LOCKED 0x4000 -#define BO_PINNED 0x2000 +#define BO_LOCKED 0x4000 /* obj lock is held */ +#define BO_PINNED 0x2000 /* obj is pinned and on active list */
static struct msm_gem_submit *submit_create(struct drm_device *dev, struct msm_gpu *gpu, @@ -220,21 +220,33 @@ static int submit_lookup_cmds(struct msm_gem_submit *submit, return ret; }
-static void submit_unlock_unpin_bo(struct msm_gem_submit *submit, - int i, bool backoff) +/* Unwind bo state, according to cleanup_flags. In the success case, only + * the lock is dropped at the end of the submit (and active/pin ref is dropped + * later when the submit is retired). + */ +static void submit_cleanup_bo(struct msm_gem_submit *submit, int i, + unsigned cleanup_flags) { - struct msm_gem_object *msm_obj = submit->bos[i].obj; + struct drm_gem_object *obj = &submit->bos[i].obj->base; + unsigned flags = submit->bos[i].flags & cleanup_flags;
- if (submit->bos[i].flags & BO_PINNED) - msm_gem_unpin_iova_locked(&msm_obj->base, submit->aspace); + if (flags & BO_PINNED) { + msm_gem_unpin_iova_locked(obj, submit->aspace); + msm_gem_active_put(obj); + }
- if (submit->bos[i].flags & BO_LOCKED) - dma_resv_unlock(msm_obj->base.resv); + if (flags & BO_LOCKED) + dma_resv_unlock(obj->resv);
- if (backoff && !(submit->bos[i].flags & BO_VALID)) - submit->bos[i].iova = 0; + submit->bos[i].flags &= ~cleanup_flags; +}
- submit->bos[i].flags &= ~(BO_LOCKED | BO_PINNED); +static void submit_unlock_unpin_bo(struct msm_gem_submit *submit, int i) +{ + submit_cleanup_bo(submit, i, BO_PINNED | BO_LOCKED); + + if (!(submit->bos[i].flags & BO_VALID)) + submit->bos[i].iova = 0; }
/* This is where we make sure all the bo's are reserved and pin'd: */ @@ -266,10 +278,10 @@ static int submit_lock_objects(struct msm_gem_submit *submit)
fail: for (; i >= 0; i--) - submit_unlock_unpin_bo(submit, i, true); + submit_unlock_unpin_bo(submit, i);
if (slow_locked > 0) - submit_unlock_unpin_bo(submit, slow_locked, true); + submit_unlock_unpin_bo(submit, slow_locked);
if (ret == -EDEADLK) { struct msm_gem_object *msm_obj = submit->bos[contended].obj; @@ -325,16 +337,18 @@ static int submit_pin_objects(struct msm_gem_submit *submit) submit->valid = true;
for (i = 0; i < submit->nr_bos; i++) { - struct msm_gem_object *msm_obj = submit->bos[i].obj; + struct drm_gem_object *obj = &submit->bos[i].obj->base; uint64_t iova;
/* if locking succeeded, pin bo: */ - ret = msm_gem_get_and_pin_iova_locked(&msm_obj->base, + ret = msm_gem_get_and_pin_iova_locked(obj, submit->aspace, &iova);
if (ret) break;
+ msm_gem_active_get(obj, submit->gpu); + submit->bos[i].flags |= BO_PINNED;
if (iova == submit->bos[i].iova) { @@ -350,6 +364,20 @@ static int submit_pin_objects(struct msm_gem_submit *submit) return ret; }
+static void submit_attach_object_fences(struct msm_gem_submit *submit) +{ + int i; + + for (i = 0; i < submit->nr_bos; i++) { + struct drm_gem_object *obj = &submit->bos[i].obj->base; + + if (submit->bos[i].flags & MSM_SUBMIT_BO_WRITE) + dma_resv_add_excl_fence(obj->resv, submit->fence); + else if (submit->bos[i].flags & MSM_SUBMIT_BO_READ) + dma_resv_add_shared_fence(obj->resv, submit->fence); + } +} + static int submit_bo(struct msm_gem_submit *submit, uint32_t idx, struct msm_gem_object **obj, uint64_t *iova, bool *valid) { @@ -444,18 +472,40 @@ static int submit_reloc(struct msm_gem_submit *submit, struct msm_gem_object *ob return ret; }
-static void submit_cleanup(struct msm_gem_submit *submit) +/* Cleanup submit at end of ioctl. In the error case, this also drops + * references, unpins, and drops active refcnt. In the non-error case, + * this is done when the submit is retired. + */ +static void submit_cleanup(struct msm_gem_submit *submit, bool error) { + unsigned cleanup_flags = BO_LOCKED; unsigned i;
+ if (error) + cleanup_flags |= BO_PINNED; + for (i = 0; i < submit->nr_bos; i++) { struct msm_gem_object *msm_obj = submit->bos[i].obj; - submit_unlock_unpin_bo(submit, i, false); + submit_cleanup_bo(submit, i, cleanup_flags); list_del_init(&msm_obj->submit_entry); - drm_gem_object_put(&msm_obj->base); + if (error) + drm_gem_object_put(&msm_obj->base); } }
+void msm_submit_retire(struct msm_gem_submit *submit) +{ + int i; + + for (i = 0; i < submit->nr_bos; i++) { + struct drm_gem_object *obj = &submit->bos[i].obj->base; + + msm_gem_lock(obj); + submit_cleanup_bo(submit, i, BO_PINNED); + msm_gem_unlock(obj); + drm_gem_object_put(obj); + } +}
struct msm_submit_post_dep { struct drm_syncobj *syncobj; @@ -832,6 +882,8 @@ int msm_ioctl_gem_submit(struct drm_device *dev, void *data, args->fence_fd = out_fence_fd; }
+ submit_attach_object_fences(submit); + msm_gpu_submit(gpu, submit);
args->fence = submit->fence->seqno; @@ -844,7 +896,7 @@ int msm_ioctl_gem_submit(struct drm_device *dev, void *data, out: pm_runtime_put(&gpu->pdev->dev); out_pre_pm: - submit_cleanup(submit); + submit_cleanup(submit, !!ret); if (has_ww_ticket) ww_acquire_fini(&submit->ticket); msm_gem_submit_put(submit); diff --git a/drivers/gpu/drm/msm/msm_gpu.c b/drivers/gpu/drm/msm/msm_gpu.c index ea4b27916a15..fef5ba51f425 100644 --- a/drivers/gpu/drm/msm/msm_gpu.c +++ b/drivers/gpu/drm/msm/msm_gpu.c @@ -765,7 +765,6 @@ static void retire_submit(struct msm_gpu *gpu, struct msm_ringbuffer *ring, int index = submit->seqno % MSM_GPU_SUBMIT_STATS_COUNT; volatile struct msm_gpu_submit_stats *stats; u64 elapsed, clock = 0; - int i;
stats = &ring->memptrs->stats[index]; /* Convert 19.2Mhz alwayson ticks to nanoseconds for elapsed time */ @@ -781,15 +780,7 @@ static void retire_submit(struct msm_gpu *gpu, struct msm_ringbuffer *ring, trace_msm_gpu_submit_retired(submit, elapsed, clock, stats->alwayson_start, stats->alwayson_end);
- for (i = 0; i < submit->nr_bos; i++) { - struct drm_gem_object *obj = &submit->bos[i].obj->base; - - msm_gem_lock(obj); - msm_gem_active_put(obj); - msm_gem_unpin_iova_locked(obj, submit->aspace); - msm_gem_unlock(obj); - drm_gem_object_put(obj); - } + msm_submit_retire(submit);
pm_runtime_mark_last_busy(&gpu->pdev->dev); pm_runtime_put_autosuspend(&gpu->pdev->dev); @@ -855,7 +846,6 @@ void msm_gpu_submit(struct msm_gpu *gpu, struct msm_gem_submit *submit) struct drm_device *dev = gpu->dev; struct msm_drm_private *priv = dev->dev_private; struct msm_ringbuffer *ring = submit->ring; - int i;
WARN_ON(!mutex_is_locked(&dev->struct_mutex));
@@ -869,36 +859,6 @@ void msm_gpu_submit(struct msm_gpu *gpu, struct msm_gem_submit *submit)
update_sw_cntrs(gpu);
- /* - * Move everything to active list before pinning, so that pinning - * does not trigger evicting anything else we need in same submit - */ - for (i = 0; i < submit->nr_bos; i++) { - struct drm_gem_object *obj = &submit->bos[i].obj->base; - - /* submit takes a reference to the bo and iova until retired: */ - drm_gem_object_get(obj); - - msm_gem_active_get(obj, gpu); - - if (submit->bos[i].flags & MSM_SUBMIT_BO_WRITE) - dma_resv_add_excl_fence(obj->resv, submit->fence); - else if (submit->bos[i].flags & MSM_SUBMIT_BO_READ) - dma_resv_add_shared_fence(obj->resv, submit->fence); - } - - /* Once we've made all the bo's we'll need active, then pin them: */ - for (i = 0; i < submit->nr_bos; i++) { - struct drm_gem_object *obj = &submit->bos[i].obj->base; - uint64_t iova; - int ret; - - ret = msm_gem_get_and_pin_iova_locked(obj, submit->aspace, &iova); - if (WARN_ON(ret)) { - pr_err("ret=%d\n", ret); - } - } - /* * ring->submits holds a ref to the submit, to deal with the case * that a submit completes before msm_ioctl_gem_submit() returns.