Changeset 5f5321ee in mainline for uspace/drv/bus/usb/ehci/endpoint_list.c

Timestamp:

2014-01-24T16:12:32Z (11 years ago)

Author:

Jan Vesely <jano.vesely@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

763dbcb

Parents:

dc44023

Message:

ehci: Implement endpoint list enqueue

File:

• uspace/drv/bus/usb/ehci/endpoint_list.c (modified) (3 diffs)

uspace/drv/bus/usb/ehci/endpoint_list.c

@@ -82 +82 @@
         assert(ep);
         assert(ep->qh);
-        usb_log_debug2("Queue %s: Adding endpoint(%p).\n", instance->name, ep);
+        usb_log_debug2("Queue %s: Append endpoint(%p).\n", instance->name, ep);
 
         fibril_mutex_lock(&instance->guard);
@@ -103 +103 @@
         write_barrier();
 
-        /* Add ed to the hw queue */
+        /* Add QH to the hw queue */
         qh_append_qh(last_qh, ep->qh);
-        /* Make sure ED is updated */
+        /* Make sure QH is updated */
         write_barrier();
         /* Add to the sw list */
@@ -122 +122 @@
 }
 
+/** Add endpoint to the beginning of the list and queue.
+ *
+ * @param[in] instance List to use.
+ * @param[in] endpoint Endpoint to add.
+ *
+ * The endpoint is added to the end of the list and queue.
+ */
+void endpoint_list_prepend_ep(endpoint_list_t *instance, ehci_endpoint_t *ep)
+{
+        assert(instance);
+        assert(ep);
+        assert(ep->qh);
+        usb_log_debug2("Queue %s: Prepend endpoint(%p).\n", instance->name, ep);
+
+        fibril_mutex_lock(&instance->guard);
+        ep->qh->horizontal = instance->list_head->horizontal;
+        /* Make sure QH is updated */
+        write_barrier();
+        /* Add QH to the hw queue */
+        qh_append_qh(instance->list_head, ep->qh);
+        /* Add to the sw list */
+        list_prepend(&ep->link, &instance->endpoint_list);
+        fibril_mutex_unlock(&instance->guard);
+
+}
 /** Remove endpoint from the list and queue.
  *