Changeset deb2e55 in mainline for uspace/lib/usbhost

Timestamp:

2017-12-28T21:54:38Z (8 years ago)

Author:

Petr Manek <petr.manek@…>

Branches:

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

Children:

415c5116

Parents:

66c16b0

git-author:

Petr Manek <petr.manek@…> (2017-12-28 21:54:31)

git-committer:

Petr Manek <petr.manek@…> (2017-12-28 21:54:38)

Message:

usbhost: refactoring

Moved the "online" attribute from xhci_device_t to device_t. Changed
USB2 bus implementation to produce online devices (not to break
functionality on older buses).

Location:

uspace/lib/usbhost

Files:

• include/usb/host/bus.h (modified) (1 diff)
• src/endpoint.c (modified) (1 diff)
• src/usb2_bus.c (modified) (1 diff)

uspace/lib/usbhost/include/usb/host/bus.h

@@ -79 +79 @@
         /* Managing bus */
         bus_t *bus;
+
+        /** True if the device can add new endpoints and schedule transfers. */
+        volatile bool online;
 
         /* This structure is meant to be extended by overriding. */

uspace/lib/usbhost/src/endpoint.c

@@ -214 +214 @@
         }
 
+        /* Offline devices don't schedule transfers other than on EP0. */
+        if (!ep->device->online && ep->endpoint > 0) {
+                return EAGAIN;
+        }
+
         const size_t bw = endpoint_count_bw(ep, size);
         /* Check if we have enough bandwidth reserved */

uspace/lib/usbhost/src/usb2_bus.c

@@ -271 +271 @@
         }
 
+        /* From now on, the device is officially online, yay! */
+        fibril_mutex_lock(&dev->guard);
+        dev->online = true;
+        fibril_mutex_unlock(&dev->guard);
+
         return EOK;