Changeset d9b2c73 in mainline for uspace/lib/usbhost/src/hcd.c

Timestamp:

2012-12-20T13:22:34Z (11 years ago)

Author:

Jan Vesely <jano.vesely@…>

Branches:

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

Children:

d09791e6

Parents:

8f68913f

Message:

libusbhost: Add hcd parameter to batch scheduling and move implementaiotn to hcd.c

File:

• uspace/lib/usbhost/src/hcd.c (modified) (1 diff)

uspace/lib/usbhost/src/hcd.c

@@ -184 +184 @@
 }
 
+/** Prepare generic usb_transfer_batch and schedule it.
+ * @param hcd Host controller driver.
+ * @param fun DDF fun
+ * @param target address and endpoint number.
+ * @param setup_data Data to use in setup stage (Control communication type)
+ * @param in Callback for device to host communication.
+ * @param out Callback for host to device communication.
+ * @param arg Callback parameter.
+ * @param name Communication identifier (for nicer output).
+ * @return Error code.
+ */
+int hcd_send_batch(
+    hcd_t *hcd, ddf_fun_t *fun, usb_target_t target, usb_direction_t direction,
+    void *data, size_t size, uint64_t setup_data,
+    usbhc_iface_transfer_in_callback_t in,
+    usbhc_iface_transfer_out_callback_t out, void *arg, const char* name)
+{
+        assert(hcd);
+
+        endpoint_t *ep = usb_endpoint_manager_find_ep(&hcd->ep_manager,
+            target.address, target.endpoint, direction);
+        if (ep == NULL) {
+                usb_log_error("Endpoint(%d:%d) not registered for %s.\n",
+                    target.address, target.endpoint, name);
+                return ENOENT;
+        }
+
+        usb_log_debug2("%s %d:%d %zu(%zu).\n",
+            name, target.address, target.endpoint, size, ep->max_packet_size);
+
+        const size_t bw = bandwidth_count_usb11(
+            ep->speed, ep->transfer_type, size, ep->max_packet_size);
+        /* Check if we have enough bandwidth reserved */
+        if (ep->bandwidth < bw) {
+                usb_log_error("Endpoint(%d:%d) %s needs %zu bw "
+                    "but only %zu is reserved.\n",
+                    ep->address, ep->endpoint, name, bw, ep->bandwidth);
+                return ENOSPC;
+        }
+        if (!hcd->schedule) {
+                usb_log_error("HCD does not implement scheduler.\n");
+                return ENOTSUP;
+        }
+
+        /* No private data and no private data dtor */
+        usb_transfer_batch_t *batch =
+            usb_transfer_batch_create(ep, data, size, setup_data,
+            in, out, arg, fun, NULL, NULL);
+        if (!batch) {
+                return ENOMEM;
+        }
+
+        const int ret = hcd->schedule(hcd, batch);
+        if (ret != EOK)
+                usb_transfer_batch_destroy(batch);
+
+        return ret;
+}
+
+
 /** Announce root hub to the DDF
  *