drm/amdgpu: dispatch jobs in cs

BO validation is moved to scheduler except usrptr which must be validated
in user process

Signed-off-by: Chunming Zhou <david1.zhou@amd.com>
Acked-by: Christian K?nig <christian.koenig@amd.com>
Reviewed-by: Jammy Zhou <Jammy.Zhou@amd.com>

2 files changed, 200 insertions, 57 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
index cfc6c786b2f2..becb26317467 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
@@ -1243,6 +1243,7 @@ struct amdgpu_cs_parser {
         struct work_struct job_work;
         int (*prepare_job)(struct amdgpu_cs_parser *sched_job);
         int (*run_job)(struct amdgpu_cs_parser *sched_job);
+        int (*free_job)(struct amdgpu_cs_parser *sched_job);
 };
 
 static inline u32 amdgpu_get_ib_value(struct amdgpu_cs_parser *p, uint32_t ib_idx, int idx)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
index bc0a70415485..f9d4fe985668 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
@@ -41,6 +41,11 @@ struct amdgpu_cs_buckets {
         struct list_head bucket[AMDGPU_CS_NUM_BUCKETS];
 };
 
+static void amdgpu_cs_parser_fini(struct amdgpu_cs_parser *parser,
+                                  int error, bool backoff);
+static void amdgpu_cs_parser_fini_early(struct amdgpu_cs_parser *parser, int error, bool backoff);
+static void amdgpu_cs_parser_fini_late(struct amdgpu_cs_parser *parser);
+
 static void amdgpu_cs_buckets_init(struct amdgpu_cs_buckets *b)
 {
         unsigned i;
@@ -126,12 +131,52 @@ int amdgpu_cs_get_ring(struct amdgpu_device *adev, u32 ip_type,
         return 0;
 }
 
+static void amdgpu_job_work_func(struct work_struct *work)
+{
+        struct amdgpu_cs_parser *sched_job =
+                container_of(work, struct amdgpu_cs_parser,
+                             job_work);
+        mutex_lock(&sched_job->job_lock);
+        sched_job->free_job(sched_job);
+        mutex_unlock(&sched_job->job_lock);
+        /* after processing job, free memory */
+        kfree(sched_job);
+}
+struct amdgpu_cs_parser *amdgpu_cs_parser_create(struct amdgpu_device *adev,
+                                               struct drm_file *filp,
+                                               struct amdgpu_ctx *ctx,
+                                               struct amdgpu_ib *ibs,
+                                               uint32_t num_ibs)
+{
+        struct amdgpu_cs_parser *parser;
+        int i;
+
+        parser = kzalloc(sizeof(struct amdgpu_cs_parser), GFP_KERNEL);
+        if (!parser)
+                return NULL;
+
+        parser->adev = adev;
+        parser->filp = filp;
+        parser->ctx = ctx;
+        parser->ibs = ibs;
+        parser->num_ibs = num_ibs;
+        if (amdgpu_enable_scheduler) {
+                mutex_init(&parser->job_lock);
+                INIT_WORK(&parser->job_work, amdgpu_job_work_func);
+        }
+        for (i = 0; i < num_ibs; i++)
+                ibs[i].ctx = ctx;
+
+        return parser;
+}
+
 int amdgpu_cs_parser_init(struct amdgpu_cs_parser *p, void *data)
 {
         union drm_amdgpu_cs *cs = data;
         uint64_t *chunk_array_user;
         uint64_t *chunk_array = NULL;
         struct amdgpu_fpriv *fpriv = p->filp->driver_priv;
+        struct amdgpu_bo_list *bo_list = NULL;
         unsigned size, i;
         int r = 0;
 
@@ -143,7 +188,17 @@ int amdgpu_cs_parser_init(struct amdgpu_cs_parser *p, void *data)
                 r = -EINVAL;
                 goto out;
         }
-        p->bo_list = amdgpu_bo_list_get(fpriv, cs->in.bo_list_handle);
+        bo_list = amdgpu_bo_list_get(fpriv, cs->in.bo_list_handle);
+        if (bo_list && !bo_list->has_userptr) {
+                p->bo_list = kzalloc(sizeof(struct amdgpu_bo_list), GFP_KERNEL);
+                if (!p->bo_list)
+                        return -ENOMEM;
+                amdgpu_bo_list_copy(p->adev, p->bo_list, bo_list);
+                amdgpu_bo_list_put(bo_list);
+        } else if (bo_list && bo_list->has_userptr)
+                p->bo_list = bo_list;
+        else
+                p->bo_list = NULL;
 
         /* get chunks */
         INIT_LIST_HEAD(&p->validated);
@@ -424,8 +479,26 @@ static int cmp_size_smaller_first(void *priv, struct list_head *a,
  **/
 static void amdgpu_cs_parser_fini(struct amdgpu_cs_parser *parser, int error, bool backoff)
 {
-        unsigned i;
+       amdgpu_cs_parser_fini_early(parser, error, backoff);
+       amdgpu_cs_parser_fini_late(parser);
+}
 
+static int amdgpu_cs_parser_run_job(
+        struct amdgpu_cs_parser *sched_job)
+{
+       amdgpu_cs_parser_fini_early(sched_job, 0, true);
+       return 0;
+}
+
+static int amdgpu_cs_parser_free_job(
+        struct amdgpu_cs_parser *sched_job)
+{
+       amdgpu_cs_parser_fini_late(sched_job);
+       return 0;
+}
+
+static void amdgpu_cs_parser_fini_early(struct amdgpu_cs_parser *parser, int error, bool backoff)
+{
         if (!error) {
                 /* Sort the buffer list from the smallest to largest buffer,
                  * which affects the order of buffers in the LRU list.
@@ -446,11 +519,19 @@ static void amdgpu_cs_parser_fini(struct amdgpu_cs_parser *parser, int error, bo
                 ttm_eu_backoff_reservation(&parser->ticket,
                                            &parser->validated);
         }
+}
 
+static void amdgpu_cs_parser_fini_late(struct amdgpu_cs_parser *parser)
+{
+        unsigned i;
         if (parser->ctx)
                 amdgpu_ctx_put(parser->ctx);
-        if (parser->bo_list)
-                amdgpu_bo_list_put(parser->bo_list);
+        if (parser->bo_list) {
+                if (!parser->bo_list->has_userptr)
+                        amdgpu_bo_list_free(parser->bo_list);
+                else
+                        amdgpu_bo_list_put(parser->bo_list);
+        }
         drm_free_large(parser->vm_bos);
         for (i = 0; i < parser->nchunks; i++)
                 drm_free_large(parser->chunks[i].kdata);
@@ -461,6 +542,9 @@ static void amdgpu_cs_parser_fini(struct amdgpu_cs_parser *parser, int error, bo
         kfree(parser->ibs);
         if (parser->uf.bo)
                 drm_gem_object_unreference_unlocked(&parser->uf.bo->gem_base);
+
+        if (!amdgpu_enable_scheduler)
+                kfree(parser);
 }
 
 static int amdgpu_bo_vm_update_pte(struct amdgpu_cs_parser *p,
@@ -533,9 +617,9 @@ static int amdgpu_cs_ib_vm_chunk(struct amdgpu_device *adev,
                 goto out;
         }
         amdgpu_cs_sync_rings(parser);
-
-        r = amdgpu_ib_schedule(adev, parser->num_ibs, parser->ibs,
-                               parser->filp);
+        if (!amdgpu_enable_scheduler)
+                r = amdgpu_ib_schedule(adev, parser->num_ibs, parser->ibs,
+                                       parser->filp);
 
 out:
         mutex_unlock(&vm->mutex);
@@ -731,35 +815,16 @@ static int amdgpu_cs_dependencies(struct amdgpu_device *adev,
         return 0;
 }
 
-int amdgpu_cs_ioctl(struct drm_device *dev, void *data, struct drm_file *filp)
+static int amdgpu_cs_parser_prepare_job(struct amdgpu_cs_parser *sched_job)
 {
-        struct amdgpu_device *adev = dev->dev_private;
-        union drm_amdgpu_cs *cs = data;
-        struct amdgpu_cs_parser parser;
-        int r, i;
-        bool reserved_buffers = false;
-
-        down_read(&adev->exclusive_lock);
-        if (!adev->accel_working) {
-                up_read(&adev->exclusive_lock);
-                return -EBUSY;
-        }
-        /* initialize parser */
-        memset(&parser, 0, sizeof(struct amdgpu_cs_parser));
-        parser.filp = filp;
-        parser.adev = adev;
-        r = amdgpu_cs_parser_init(&parser, data);
-        if (r) {
-                DRM_ERROR("Failed to initialize parser !\n");
-                amdgpu_cs_parser_fini(&parser, r, false);
-                up_read(&adev->exclusive_lock);
-                r = amdgpu_cs_handle_lockup(adev, r);
-                return r;
-        }
-
-        r = amdgpu_cs_parser_relocs(&parser);
-        if (r) {
-                if (r != -ERESTARTSYS) {
+        int r, i;
+        struct amdgpu_cs_parser *parser = sched_job;
+        struct amdgpu_device *adev = sched_job->adev;
+        bool reserved_buffers = false;
+
+        r = amdgpu_cs_parser_relocs(parser);
+        if (r) {
+                if (r != -ERESTARTSYS) {
                         if (r == -ENOMEM)
                                 DRM_ERROR("Not enough memory for command submission!\n");
                         else
@@ -769,33 +834,104 @@ int amdgpu_cs_ioctl(struct drm_device *dev, void *data, struct drm_file *filp)
 
         if (!r) {
                 reserved_buffers = true;
-                r = amdgpu_cs_ib_fill(adev, &parser);
+                r = amdgpu_cs_ib_fill(adev, parser);
         }
-
         if (!r) {
-                r = amdgpu_cs_dependencies(adev, &parser);
+                r = amdgpu_cs_dependencies(adev, parser);
                 if (r)
                         DRM_ERROR("Failed in the dependencies handling %d!\n", r);
         }
+        if (r) {
+                amdgpu_cs_parser_fini(parser, r, reserved_buffers);
+               return r;
+        }
+
+        for (i = 0; i < parser->num_ibs; i++)
+                trace_amdgpu_cs(parser, i);
+
+       r = amdgpu_cs_ib_vm_chunk(adev, parser);
+       return r;
+}
+
+static struct amdgpu_ring *amdgpu_cs_parser_get_ring(
+        struct amdgpu_device *adev,
+        struct amdgpu_cs_parser *parser)
+{
+        int i, r;
+
+        struct amdgpu_cs_chunk *chunk;
+        struct drm_amdgpu_cs_chunk_ib *chunk_ib;
+        struct amdgpu_ring *ring;
+        for (i = 0; i < parser->nchunks; i++) {
+                chunk = &parser->chunks[i];
+                chunk_ib = (struct drm_amdgpu_cs_chunk_ib *)chunk->kdata;
+
+                if (chunk->chunk_id != AMDGPU_CHUNK_ID_IB)
+                        continue;
+
+                r = amdgpu_cs_get_ring(adev, chunk_ib->ip_type,
+                                       chunk_ib->ip_instance, chunk_ib->ring,
+                                       &ring);
+                if (r)
+                        return NULL;
+                break;
+        }
+        return ring;
+}
+
+int amdgpu_cs_ioctl(struct drm_device *dev, void *data, struct drm_file *filp)
+{
+        struct amdgpu_device *adev = dev->dev_private;
+        union drm_amdgpu_cs *cs = data;
+        struct amdgpu_cs_parser *parser;
+        int r;
+
+        down_read(&adev->exclusive_lock);
+        if (!adev->accel_working) {
+                up_read(&adev->exclusive_lock);
+                return -EBUSY;
+        }
 
+        parser = amdgpu_cs_parser_create(adev, filp, NULL, NULL, 0);
+        if (!parser)
+                return -ENOMEM;
+        r = amdgpu_cs_parser_init(parser, data);
         if (r) {
-                amdgpu_cs_parser_fini(&parser, r, reserved_buffers);
+                DRM_ERROR("Failed to initialize parser !\n");
+                amdgpu_cs_parser_fini(parser, r, false);
                 up_read(&adev->exclusive_lock);
                 r = amdgpu_cs_handle_lockup(adev, r);
                 return r;
         }
 
-        for (i = 0; i < parser.num_ibs; i++)
-                trace_amdgpu_cs(&parser, i);
-
-        r = amdgpu_cs_ib_vm_chunk(adev, &parser);
-        if (r) {
-                goto out;
+        if (amdgpu_enable_scheduler && parser->num_ibs) {
+                struct amdgpu_ring * ring =
+                        amdgpu_cs_parser_get_ring(adev, parser);
+                parser->uf.sequence = atomic64_inc_return(
+                        &parser->ctx->rings[ring->idx].c_entity.last_queued_v_seq);
+                if ((parser->bo_list && parser->bo_list->has_userptr)) {
+                        r = amdgpu_cs_parser_prepare_job(parser);
+                        if (r)
+                                goto out;
+                } else
+                        parser->prepare_job = amdgpu_cs_parser_prepare_job;
+
+                parser->run_job = amdgpu_cs_parser_run_job;
+                parser->free_job = amdgpu_cs_parser_free_job;
+                amd_sched_push_job(ring->scheduler,
+                                   &parser->ctx->rings[ring->idx].c_entity,
+                                   parser);
+                cs->out.handle = parser->uf.sequence;
+                up_read(&adev->exclusive_lock);
+                return 0;
         }
+        r = amdgpu_cs_parser_prepare_job(parser);
+        if (r)
+                goto out;
 
-        cs->out.handle = parser.ibs[parser.num_ibs - 1].sequence;
+        cs->out.handle = parser->ibs[parser->num_ibs - 1].sequence;
 out:
-        amdgpu_cs_parser_fini(&parser, r, true);
+        amdgpu_cs_parser_fini(parser, r, true);
         up_read(&adev->exclusive_lock);
         r = amdgpu_cs_handle_lockup(adev, r);
         return r;
@@ -829,18 +965,24 @@ int amdgpu_cs_wait_ioctl(struct drm_device *dev, void *data,
         ctx = amdgpu_ctx_get(filp->driver_priv, wait->in.ctx_id);
         if (ctx == NULL)
                 return -EINVAL;
-
-        fence = amdgpu_ctx_get_fence(ctx, ring, wait->in.handle);
-        if (IS_ERR(fence))
-                r = PTR_ERR(fence);
-
-        else if (fence) {
-                r = fence_wait_timeout(fence, true, timeout);
-                fence_put(fence);
-
-        } else
+        if (amdgpu_enable_scheduler) {
+                r = amd_sched_wait_ts(&ctx->rings[ring->idx].c_entity,
+                                      wait->in.handle, true, timeout);
+                if (r)
+                        return r;
                 r = 1;
+        } else {
+                fence = amdgpu_ctx_get_fence(ctx, ring, wait->in.handle);
+                if (IS_ERR(fence))
+                        r = PTR_ERR(fence);
 
+                else if (fence) {
+                        r = fence_wait_timeout(fence, true, timeout);
+                        fence_put(fence);
+
+                } else
+                        r = 1;
+        }
         amdgpu_ctx_put(ctx);
         if (r < 0)
                 return r;