Changeset f82c4822 in mainline

Timestamp:

2018-01-10T23:02:27Z (6 years ago)

Author:

Petr Manek <petr.manek@…>

Branches:

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

Children:

a6c4597

Parents:

1b78beae

Message:

ehci: add bus support for offline/online (WIP)

File:

• uspace/drv/bus/usb/ehci/ehci_bus.c (modified) (2 diffs)

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

@@ -137 +137 @@
 {
         ehci_transfer_batch_destroy(ehci_transfer_batch_get(batch));
+}
+
+static int ehci_device_online(device_t *device)
+{
+        int err;
+
+        /* Allow creation of new endpoints and transfers. */
+        usb_log_info("Device(%d): Going online.", device->address);
+        fibril_mutex_lock(&device->guard);
+        device->online = true;
+        fibril_mutex_unlock(&device->guard);
+
+        if ((err = ddf_fun_online(device->fun))) {
+                return err;
+        }
+
+        return EOK;
+}
+
+static int ehci_device_offline(device_t *device)
+{
+        int err;
+
+        /* Tear down all drivers working with the device. */
+        if ((err = ddf_fun_offline(device->fun))) {
+                return err;
+        }
+
+        /* At this point, all drivers are assumed to have already terminated
+         * in a consistent way. The following code just cleans up hanging
+         * transfers if there are any. */
+
+        /* Block creation of new endpoints and transfers. */
+        usb_log_info("Device(%d): Going offline.", device->address);
+        fibril_mutex_lock(&device->guard);
+        device->online = false;
+        fibril_mutex_unlock(&device->guard);
+
+        /* FIXME: Abort all transfers to all endpoints. */
+
+        return EOK;
 }
 
@@ -153 +194 @@
         .batch_destroy = ehci_destroy_batch,
         .batch_schedule = ehci_hc_schedule,
+        .device_online = ehci_device_online,
+        .device_offline = ehci_device_offline,
 };