Changes in uspace/lib/usbdev/src/hub.c [6e3c005:7711296] in mainline

File:

• uspace/lib/usbdev/src/hub.c (modified) (17 diffs)

uspace/lib/usbdev/src/hub.c

@@ -38 +38 @@
 #include <usb/dev/recognise.h>
 #include <usb/debug.h>
+#include <usbhc_iface.h>
 #include <errno.h>
 #include <assert.h>
@@ -44 +45 @@
 #include <async.h>
 
-/** How much time to wait between attempts to get the default address.
+/** How much time to wait between attempts to register endpoint 0:0.
  * The value is based on typical value for port reset + some overhead.
  */
-#define DEFAULT_ADDRESS_ATTEMPT_DELAY_USEC (1000 * (10 + 2))
+#define ENDPOINT_0_0_REGISTER_ATTEMPT_DELAY_USEC (1000 * (10 + 2))
+
+/** Check that HC connection is alright.
+ *
+ * @param conn Connection to be checked.
+ */
+#define CHECK_CONNECTION(conn) \
+        do { \
+                assert((conn)); \
+                if (!usb_hc_connection_is_opened((conn))) { \
+                        usb_log_error("Connection not open.\n"); \
+                        return ENOTCONN; \
+                } \
+        } while (false)
+
+/** Ask host controller for free address assignment.
+ *
+ * @param connection Opened connection to host controller.
+ * @param preferred Preferred SUB address.
+ * @param strict Fail if the preferred address is not avialable.
+ * @param speed Speed of the new device (device that will be assigned
+ *    the returned address).
+ * @return Assigned USB address or negative error code.
+ */
+usb_address_t usb_hc_request_address(usb_hc_connection_t *connection,
+    usb_address_t preferred, bool strict, usb_speed_t speed)
+{
+        CHECK_CONNECTION(connection);
+
+        async_exch_t *exch = async_exchange_begin(connection->hc_sess);
+        if (!exch)
+                return (usb_address_t)ENOMEM;
+
+        usb_address_t address = preferred;
+        const int ret = usbhc_request_address(exch, &address, strict, speed);
+
+        async_exchange_end(exch);
+        return ret == EOK ? address : ret;
+}
 
 /** Inform host controller about new device.
@@ -55 +94 @@
  * @return Error code.
  */
-int usb_hub_register_device(usb_hc_connection_t *connection,
+int usb_hc_register_device(usb_hc_connection_t *connection,
     const usb_hub_attached_device_t *attached_device)
 {
-        assert(connection);
+        CHECK_CONNECTION(connection);
         if (attached_device == NULL || attached_device->fun == NULL)
-                return EBADMEM;
-        return usb_hc_bind_address(connection,
+                return EINVAL;
+
+        async_exch_t *exch = async_exchange_begin(connection->hc_sess);
+        if (!exch)
+                return ENOMEM;
+        const int ret = usbhc_bind_address(exch,
             attached_device->address, attached_device->fun->handle);
+        async_exchange_end(exch);
+
+        return ret;
+}
+
+/** Inform host controller about device removal.
+ *
+ * @param connection Opened connection to host controller.
+ * @param address Address of the device that is being removed.
+ * @return Error code.
+ */
+int usb_hc_unregister_device(usb_hc_connection_t *connection,
+    usb_address_t address)
+{
+        CHECK_CONNECTION(connection);
+
+        async_exch_t *exch = async_exchange_begin(connection->hc_sess);
+        if (!exch)
+                return ENOMEM;
+        const int ret = usbhc_release_address(exch, address);
+        async_exchange_end(exch);
+
+        return ret;
 }
 
@@ -79 +145 @@
  * @return Error code.
  */
-static int usb_request_set_address(usb_pipe_t *pipe, usb_address_t new_address)
+static int usb_request_set_address(usb_pipe_t *pipe, usb_address_t new_address,
+    usb_hc_connection_t *hc_conn)
 {
         if ((new_address < 0) || (new_address >= USB11_ADDRESS_MAX)) {
@@ -85 +152 @@
         }
         assert(pipe);
+        assert(hc_conn);
         assert(pipe->wire != NULL);
 
@@ -98 +166 @@
 
         /* TODO: prevent others from accessing the wire now. */
-        if (usb_pipe_unregister(pipe) != EOK) {
+        if (usb_pipe_unregister(pipe, hc_conn) != EOK) {
                 usb_log_warning(
                     "Failed to unregister the old pipe on address change.\n");
         }
-        /* Address changed. We can release the old one, thus
-         * allowing other to us it. */
-        usb_hc_release_address(pipe->wire->hc_connection, pipe->wire->address);
-
         /* The address is already changed so set it in the wire */
         pipe->wire->address = new_address;
-        rc = usb_pipe_register(pipe, 0);
+        rc = usb_pipe_register(pipe, 0, hc_conn);
         if (rc != EOK)
                 return EADDRNOTAVAIL;
@@ -156 +220 @@
  */
 int usb_hc_new_device_wrapper(ddf_dev_t *parent,
-    usb_hc_connection_t *hc_conn, usb_speed_t dev_speed,
+    usb_hc_connection_t *connection, usb_speed_t dev_speed,
     int (*enable_port)(void *arg), void *arg, usb_address_t *assigned_address,
     ddf_dev_ops_t *dev_ops, void *new_dev_data, ddf_fun_t **new_fun)
 {
-        if (new_fun == NULL || hc_conn == NULL)
+        if (new_fun == NULL || connection == NULL)
                 return EINVAL;
+
+        // TODO: Why not use provided connection?
+        usb_hc_connection_t hc_conn;
+        usb_hc_connection_initialize(&hc_conn, connection->hc_handle);
 
         int rc;
@@ -171 +239 @@
         }
 
-        /* We are gona do a lot of communication better open it in advance. */
-        rc = usb_hc_connection_open(hc_conn);
+        rc = usb_hc_connection_open(&hc_conn);
         if (rc != EOK) {
                 return rc;
         }
 
-        /* Request a new address. */
+        /*
+         * Request new address.
+         */
         usb_address_t dev_addr =
-            usb_hc_request_address(hc_conn, 0, false, dev_speed);
+            usb_hc_request_address(&hc_conn, 0, false, dev_speed);
         if (dev_addr < 0) {
                 rc = EADDRNOTAVAIL;
@@ -185 +254 @@
         }
 
-        /* Initialize connection to device. */
+        /*
+         * We will not register control pipe on default address.
+         * The registration might fail. That means that someone else already
+         * registered that endpoint. We will simply wait and try again.
+         * (Someone else already wants to add a new device.)
+         */
         usb_device_connection_t dev_conn;
-        rc = usb_device_connection_initialize(
-            &dev_conn, hc_conn, USB_ADDRESS_DEFAULT);
+        rc = usb_device_connection_initialize_on_default_address(&dev_conn,
+            &hc_conn);
         if (rc != EOK) {
                 rc = ENOTCONN;
@@ -194 +268 @@
         }
 
-        /* Initialize control pipe on default address. Don't register yet. */
         usb_pipe_t ctrl_pipe;
         rc = usb_pipe_initialize_default_control(&ctrl_pipe, &dev_conn);
@@ -202 +275 @@
         }
 
-        /*
-         * The default address request might fail.
-         * That means that someone else is already using that address.
-         * We will simply wait and try again.
-         * (Someone else already wants to add a new device.)
-         */
         do {
-                rc = usb_hc_request_address(hc_conn, USB_ADDRESS_DEFAULT,
+                rc = usb_hc_request_address(&hc_conn, USB_ADDRESS_DEFAULT,
                     true, dev_speed);
                 if (rc == ENOENT) {
                         /* Do not overheat the CPU ;-). */
-                        async_usleep(DEFAULT_ADDRESS_ATTEMPT_DELAY_USEC);
+                        async_usleep(ENDPOINT_0_0_REGISTER_ATTEMPT_DELAY_USEC);
                 }
         } while (rc == ENOENT);
@@ -220 +287 @@
         }
 
-        /* Register control pipe on default address. 0 means no interval. */
-        rc = usb_pipe_register(&ctrl_pipe, 0);
+        /* Register control pipe on default address. */
+        rc = usb_pipe_register(&ctrl_pipe, 0, &hc_conn);
         if (rc != EOK) {
                 rc = ENOTCONN;
@@ -228 +295 @@
 
         struct timeval end_time;
+
         rc = gettimeofday(&end_time, NULL);
         if (rc != EOK) {
@@ -262 +330 @@
         }
 
-        rc = usb_request_set_address(&ctrl_pipe, dev_addr);
+        rc = usb_request_set_address(&ctrl_pipe, dev_addr, &hc_conn);
         if (rc != EOK) {
                 rc = ESTALL;
@@ -268 +336 @@
         }
 
+        /* Address changed. We can release the default, thus
+         * allowing other to access the default address. */
+        usb_hc_unregister_device(&hc_conn, USB_ADDRESS_DEFAULT);
 
         /* Register the device with devman. */
@@ -285 +356 @@
 
         /* Inform the host controller about the handle. */
-        rc = usb_hub_register_device(hc_conn, &new_device);
+        rc = usb_hc_register_device(&hc_conn, &new_device);
         if (rc != EOK) {
                 /* We know nothing about that data. */
@@ -310 +381 @@
          */
 leave_release_default_address:
-        if (usb_hc_release_address(hc_conn, USB_ADDRESS_DEFAULT) != EOK)
-                usb_log_warning("%s: Failed to release defaut address.\n",
-                    __FUNCTION__);
+        usb_hc_unregister_device(&hc_conn, USB_ADDRESS_DEFAULT);
 
 leave_release_free_address:
         /* This might be either 0:0 or dev_addr:0 */
-        if (usb_pipe_unregister(&ctrl_pipe) != EOK)
+        if (usb_pipe_unregister(&ctrl_pipe, &hc_conn) != EOK)
                 usb_log_warning("%s: Failed to unregister default pipe.\n",
                     __FUNCTION__);
 
-        if (usb_hc_release_address(hc_conn, dev_addr) != EOK)
-                usb_log_warning("%s: Failed to release address: %d.\n",
-                    __FUNCTION__, dev_addr);
+        if (usb_hc_unregister_device(&hc_conn, dev_addr) != EOK)
+                usb_log_warning("%s: Failed to unregister device.\n",
+                    __FUNCTION__);
 
 close_connection:
-        if (usb_hc_connection_close(hc_conn) != EOK)
+        if (usb_hc_connection_close(&hc_conn) != EOK)
                 usb_log_warning("%s: Failed to close hc connection.\n",
                     __FUNCTION__);