drm/vmwgfx: Persistent tracking of context bindings
Only scrub context bindings when a bound resource is destroyed, or when
the MOB backing the context is unbound.
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Zack Rusin <zackr@vmware.com>
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_context.c b/drivers/gpu/drm/vmwgfx/vmwgfx_context.c
index b4de756..97aa551 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_context.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_context.c
@@ -32,6 +32,7 @@
struct vmw_user_context {
struct ttm_base_object base;
struct vmw_resource res;
+ struct vmw_ctx_binding_state cbs;
};
@@ -52,7 +53,7 @@
static int vmw_context_scrub_shader(struct vmw_ctx_bindinfo *bi);
static int vmw_context_scrub_render_target(struct vmw_ctx_bindinfo *bi);
static int vmw_context_scrub_texture(struct vmw_ctx_bindinfo *bi);
-
+static void vmw_context_binding_state_kill(struct vmw_ctx_binding_state *cbs);
static uint64_t vmw_user_context_size;
static const struct vmw_user_resource_conv user_context_conv = {
@@ -139,6 +140,8 @@
void (*res_free) (struct vmw_resource *res))
{
int ret;
+ struct vmw_user_context *uctx =
+ container_of(res, struct vmw_user_context, res);
ret = vmw_resource_init(dev_priv, res, true,
res_free, &vmw_gb_context_func);
@@ -152,6 +155,9 @@
return ret;
}
+ memset(&uctx->cbs, 0, sizeof(uctx->cbs));
+ INIT_LIST_HEAD(&uctx->cbs.list);
+
vmw_resource_activate(res, vmw_hw_context_destroy);
return 0;
}
@@ -304,6 +310,8 @@
struct vmw_private *dev_priv = res->dev_priv;
struct ttm_buffer_object *bo = val_buf->bo;
struct vmw_fence_obj *fence;
+ struct vmw_user_context *uctx =
+ container_of(res, struct vmw_user_context, res);
struct {
SVGA3dCmdHeader header;
@@ -319,12 +327,16 @@
BUG_ON(bo->mem.mem_type != VMW_PL_MOB);
+ mutex_lock(&dev_priv->binding_mutex);
+ vmw_context_binding_state_kill(&uctx->cbs);
+
submit_size = sizeof(*cmd2) + (readback ? sizeof(*cmd1) : 0);
cmd = vmw_fifo_reserve(dev_priv, submit_size);
if (unlikely(cmd == NULL)) {
DRM_ERROR("Failed reserving FIFO space for context "
"unbinding.\n");
+ mutex_unlock(&dev_priv->binding_mutex);
return -ENOMEM;
}
@@ -342,6 +354,7 @@
cmd2->body.mobid = SVGA3D_INVALID_ID;
vmw_fifo_commit(dev_priv, submit_size);
+ mutex_unlock(&dev_priv->binding_mutex);
/*
* Create a fence object and fence the backup buffer.
@@ -365,6 +378,10 @@
SVGA3dCmdHeader header;
SVGA3dCmdDestroyGBContext body;
} *cmd;
+ struct vmw_user_context *uctx =
+ container_of(res, struct vmw_user_context, res);
+
+ BUG_ON(!list_empty(&uctx->cbs.list));
if (likely(res->id == -1))
return 0;
@@ -620,6 +637,8 @@
static void vmw_context_binding_drop(struct vmw_ctx_binding *cb)
{
list_del(&cb->ctx_list);
+ if (!list_empty(&cb->res_list))
+ list_del(&cb->res_list);
cb->bi.ctx = NULL;
}
@@ -674,11 +693,49 @@
loc->bi = *bi;
list_add_tail(&loc->ctx_list, &cbs->list);
+ INIT_LIST_HEAD(&loc->res_list);
return 0;
}
/**
+ * vmw_context_binding_transfer: Transfer a context binding tracking entry.
+ *
+ * @cbs: Pointer to the persistent context binding state tracker.
+ * @bi: Information about the binding to track.
+ *
+ */
+static void vmw_context_binding_transfer(struct vmw_ctx_binding_state *cbs,
+ const struct vmw_ctx_bindinfo *bi)
+{
+ struct vmw_ctx_binding *loc;
+
+ switch (bi->bt) {
+ case vmw_ctx_binding_rt:
+ loc = &cbs->render_targets[bi->i1.rt_type];
+ break;
+ case vmw_ctx_binding_tex:
+ loc = &cbs->texture_units[bi->i1.texture_stage];
+ break;
+ case vmw_ctx_binding_shader:
+ loc = &cbs->shaders[bi->i1.shader_type];
+ break;
+ default:
+ BUG();
+ }
+
+ if (loc->bi.ctx != NULL)
+ vmw_context_binding_drop(loc);
+
+ loc->bi = *bi;
+ list_add_tail(&loc->ctx_list, &cbs->list);
+ if (bi->res != NULL)
+ list_add_tail(&loc->res_list, &bi->res->binding_head);
+ else
+ INIT_LIST_HEAD(&loc->res_list);
+}
+
+/**
* vmw_context_binding_kill - Kill a binding on the device
* and stop tracking it.
*
@@ -702,11 +759,47 @@
* Emits commands to scrub all bindings associated with the
* context binding state tracker. Then re-initializes the whole structure.
*/
-void vmw_context_binding_state_kill(struct vmw_ctx_binding_state *cbs)
+static void vmw_context_binding_state_kill(struct vmw_ctx_binding_state *cbs)
{
struct vmw_ctx_binding *entry, *next;
- list_for_each_entry_safe(entry, next, &cbs->list, ctx_list) {
+ list_for_each_entry_safe(entry, next, &cbs->list, ctx_list)
vmw_context_binding_kill(entry);
- }
+}
+
+/**
+ * vmw_context_binding_res_list_kill - Kill all bindings on a
+ * resource binding list
+ *
+ * @head: list head of resource binding list
+ *
+ * Kills all bindings associated with a specific resource. Typically
+ * called before the resource is destroyed.
+ */
+void vmw_context_binding_res_list_kill(struct list_head *head)
+{
+ struct vmw_ctx_binding *entry, *next;
+
+ list_for_each_entry_safe(entry, next, head, res_list)
+ vmw_context_binding_kill(entry);
+}
+
+/**
+ * vmw_context_binding_state_transfer - Commit staged binding info
+ *
+ * @ctx: Pointer to context to commit the staged binding info to.
+ * @from: Staged binding info built during execbuf.
+ *
+ * Transfers binding info from a temporary structure to the persistent
+ * structure in the context. This can be done once commands
+ */
+void vmw_context_binding_state_transfer(struct vmw_resource *ctx,
+ struct vmw_ctx_binding_state *from)
+{
+ struct vmw_user_context *uctx =
+ container_of(ctx, struct vmw_user_context, res);
+ struct vmw_ctx_binding *entry, *next;
+
+ list_for_each_entry_safe(entry, next, &from->list, ctx_list)
+ vmw_context_binding_transfer(&uctx->cbs, &entry->bi);
}