These changes are the raw update to qemu-2.6.

[kvmfornfv.git] / qemu / roms / ipxe / src / drivers / usb / usbhid.c

diff --git a/qemu/roms/ipxe/src/drivers/usb/usbhid.c b/qemu/roms/ipxe/src/drivers/usb/usbhid.c
new file mode 100644 (file)
index 0000000..c74535a
--- /dev/null
+++ b/qemu/roms/ipxe/src/drivers/usb/usbhid.c
@@ -0,0 +1,151 @@
+/*
+ * Copyright (C) 2015 Michael Brown <mbrown@fensystems.co.uk>.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ * You can also choose to distribute this program under the terms of
+ * the Unmodified Binary Distribution Licence (as given in the file
+ * COPYING.UBDL), provided that you have satisfied its requirements.
+ */
+
+FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
+
+#include <string.h>
+#include <errno.h>
+#include <ipxe/usb.h>
+#include <ipxe/usbhid.h>
+
+/** @file
+ *
+ * USB human interface devices (HID)
+ *
+ */
+
+/**
+ * Open USB human interface device
+ *
+ * @v hid              USB human interface device
+ * @ret rc             Return status code
+ */
+int usbhid_open ( struct usb_hid *hid ) {
+       int rc;
+
+       /* Open interrupt IN endpoint */
+       if ( ( rc = usb_endpoint_open ( &hid->in ) ) != 0 ) {
+               DBGC ( hid, "HID %s could not open interrupt IN: %s\n",
+                      hid->func->name, strerror ( rc ) );
+               goto err_open_in;
+       }
+
+       /* Refill interrupt IN endpoint */
+       if ( ( rc = usb_refill ( &hid->in ) ) != 0 ) {
+               DBGC ( hid, "HID %s could not refill interrupt IN: %s\n",
+                      hid->func->name, strerror ( rc ) );
+               goto err_refill_in;
+       }
+
+       /* Open interrupt OUT endpoint, if applicable */
+       if ( hid->out.usb &&
+            ( ( rc = usb_endpoint_open ( &hid->out ) ) != 0 ) ) {
+               DBGC ( hid, "HID %s could not open interrupt OUT: %s\n",
+                      hid->func->name, strerror ( rc ) );
+               goto err_open_out;
+       }
+
+       return 0;
+
+       usb_endpoint_close ( &hid->out );
+ err_open_out:
+ err_refill_in:
+       usb_endpoint_close ( &hid->in );
+ err_open_in:
+       return rc;
+}
+
+/**
+ * Close USB human interface device
+ *
+ * @v hid              USB human interface device
+ */
+void usbhid_close ( struct usb_hid *hid ) {
+
+       /* Close interrupt OUT endpoint, if applicable */
+       if ( hid->out.usb )
+               usb_endpoint_close ( &hid->out );
+
+       /* Close interrupt IN endpoint */
+       usb_endpoint_close ( &hid->in );
+}
+
+/**
+ * Refill USB human interface device endpoints
+ *
+ * @v hid              USB human interface device
+ * @ret rc             Return status code
+ */
+int usbhid_refill ( struct usb_hid *hid ) {
+       int rc;
+
+       /* Refill interrupt IN endpoint */
+       if ( ( rc = usb_refill ( &hid->in ) ) != 0 )
+               return rc;
+
+       /* Refill interrupt OUT endpoint, if applicable */
+       if ( hid->out.usb && ( ( rc = usb_refill ( &hid->out ) ) != 0 ) )
+               return rc;
+
+       return 0;
+}
+
+/**
+ * Describe USB human interface device
+ *
+ * @v hid              USB human interface device
+ * @v config           Configuration descriptor
+ * @ret rc             Return status code
+ */
+int usbhid_describe ( struct usb_hid *hid,
+                     struct usb_configuration_descriptor *config ) {
+       struct usb_interface_descriptor *desc;
+       int rc;
+
+       /* Locate interface descriptor */
+       desc = usb_interface_descriptor ( config, hid->func->interface[0], 0 );
+       if ( ! desc ) {
+               DBGC ( hid, "HID %s has no interface descriptor\n",
+                      hid->func->name );
+               return -EINVAL;
+       }
+
+       /* Describe interrupt IN endpoint */
+       if ( ( rc = usb_endpoint_described ( &hid->in, config, desc,
+                                            USB_INTERRUPT_IN, 0 ) ) != 0 ) {
+               DBGC ( hid, "HID %s could not describe interrupt IN: %s\n",
+                      hid->func->name, strerror ( rc ) );
+               return rc;
+       }
+
+       /* Describe interrupt OUT endpoint, if applicable */
+       if ( hid->out.usb &&
+            ( ( rc = usb_endpoint_described ( &hid->out, config, desc,
+                                              USB_INTERRUPT_OUT, 0 ) ) != 0 )){
+               DBGC ( hid, "HID %s could not describe interrupt OUT: %s\n",
+                      hid->func->name, strerror ( rc ) );
+               return rc;
+       }
+
+       return 0;
+}