These changes are the raw update to qemu-2.6.

Collission happened in the following patches:

migration: do cleanup operation after completion(738df5b9)
Bug fix.(1750c932f86)
kvmclock: add a new function to update env->tsc.(b52baab2)

The code provided by the patches was already in the upstreamed
version.

Change-Id: I3cc11841a6a76ae20887b2e245710199e1ea7f9a
Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>

1 files changed, 520 insertions, 0 deletions

diff --git a/qemu/roms/ipxe/src/drivers/net/ecm.c b/qemu/roms/ipxe/src/drivers/net/ecm.c
new file mode 100644
index 000000000..8c84ea9e9
--- /dev/null
+++ b/qemu/roms/ipxe/src/drivers/net/ecm.c
@@ -0,0 +1,520 @@
+/*
+ * Copyright (C) 2014 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 <stdint.h>
+#include <errno.h>
+#include <ipxe/netdevice.h>
+#include <ipxe/ethernet.h>
+#include <ipxe/if_ether.h>
+#include <ipxe/base16.h>
+#include <ipxe/profile.h>
+#include <ipxe/usb.h>
+#include "ecm.h"
+
+/** @file
+ *
+ * CDC-ECM USB Ethernet driver
+ *
+ */
+
+/** Interrupt completion profiler */
+static struct profiler ecm_intr_profiler __profiler =
+	{ .name = "ecm.intr" };
+
+/** Bulk IN completion profiler */
+static struct profiler ecm_in_profiler __profiler =
+	{ .name = "ecm.in" };
+
+/** Bulk OUT profiler */
+static struct profiler ecm_out_profiler __profiler =
+	{ .name = "ecm.out" };
+
+/******************************************************************************
+ *
+ * Ethernet functional descriptor
+ *
+ ******************************************************************************
+ */
+
+/**
+ * Locate Ethernet functional descriptor
+ *
+ * @v config		Configuration descriptor
+ * @v interface		Interface descriptor
+ * @ret desc		Descriptor, or NULL if not found
+ */
+struct ecm_ethernet_descriptor *
+ecm_ethernet_descriptor ( struct usb_configuration_descriptor *config,
+			  struct usb_interface_descriptor *interface ) {
+	struct ecm_ethernet_descriptor *desc;
+
+	for_each_interface_descriptor ( desc, config, interface ) {
+		if ( ( desc->header.type == USB_CS_INTERFACE_DESCRIPTOR ) &&
+		     ( desc->subtype == CDC_SUBTYPE_ETHERNET ) )
+			return desc;
+	}
+	return NULL;
+}
+
+/**
+ * Get hardware MAC address
+ *
+ * @v usb		USB device
+ * @v desc		Ethernet functional descriptor
+ * @v hw_addr		Hardware address to fill in
+ * @ret rc		Return status code
+ */
+int ecm_fetch_mac ( struct usb_device *usb,
+		    struct ecm_ethernet_descriptor *desc, uint8_t *hw_addr ) {
+	char buf[ base16_encoded_len ( ETH_ALEN ) + 1 /* NUL */ ];
+	int len;
+	int rc;
+
+	/* Fetch MAC address string */
+	len = usb_get_string_descriptor ( usb, desc->mac, 0, buf,
+					  sizeof ( buf ) );
+	if ( len < 0 ) {
+		rc = len;
+		return rc;
+	}
+
+	/* Sanity check */
+	if ( len != ( ( int ) ( sizeof ( buf ) - 1 /* NUL */ ) ) )
+		return -EINVAL;
+
+	/* Decode MAC address */
+	len = base16_decode ( buf, hw_addr, ETH_ALEN );
+	if ( len < 0 ) {
+		rc = len;
+		return rc;
+	}
+
+	return 0;
+}
+
+/******************************************************************************
+ *
+ * CDC-ECM communications interface
+ *
+ ******************************************************************************
+ */
+
+/**
+ * Complete interrupt transfer
+ *
+ * @v ep		USB endpoint
+ * @v iobuf		I/O buffer
+ * @v rc		Completion status code
+ */
+static void ecm_intr_complete ( struct usb_endpoint *ep,
+				struct io_buffer *iobuf, int rc ) {
+	struct ecm_device *ecm = container_of ( ep, struct ecm_device,
+						usbnet.intr );
+	struct net_device *netdev = ecm->netdev;
+	struct usb_setup_packet *message;
+	size_t len = iob_len ( iobuf );
+
+	/* Profile completions */
+	profile_start ( &ecm_intr_profiler );
+
+	/* Ignore packets cancelled when the endpoint closes */
+	if ( ! ep->open )
+		goto ignore;
+
+	/* Drop packets with errors */
+	if ( rc != 0 ) {
+		DBGC ( ecm, "ECM %p interrupt failed: %s\n",
+		       ecm, strerror ( rc ) );
+		DBGC_HDA ( ecm, 0, iobuf->data, iob_len ( iobuf ) );
+		goto error;
+	}
+
+	/* Extract message header */
+	if ( len < sizeof ( *message ) ) {
+		DBGC ( ecm, "ECM %p underlength interrupt:\n", ecm );
+		DBGC_HDA ( ecm, 0, iobuf->data, iob_len ( iobuf ) );
+		rc = -EINVAL;
+		goto error;
+	}
+	message = iobuf->data;
+
+	/* Parse message header */
+	switch ( message->request ) {
+
+	case cpu_to_le16 ( CDC_NETWORK_CONNECTION ) :
+		if ( message->value && ! netdev_link_ok ( netdev ) ) {
+			DBGC ( ecm, "ECM %p link up\n", ecm );
+			netdev_link_up ( netdev );
+		} else if ( netdev_link_ok ( netdev ) && ! message->value ) {
+			DBGC ( ecm, "ECM %p link down\n", ecm );
+			netdev_link_down ( netdev );
+		}
+		break;
+
+	case cpu_to_le16 ( CDC_CONNECTION_SPEED_CHANGE ) :
+		/* Ignore */
+		break;
+
+	default:
+		DBGC ( ecm, "ECM %p unrecognised interrupt:\n", ecm );
+		DBGC_HDA ( ecm, 0, iobuf->data, iob_len ( iobuf ) );
+		rc = -ENOTSUP;
+		goto error;
+	}
+
+	/* Free I/O buffer */
+	free_iob ( iobuf );
+	profile_stop ( &ecm_intr_profiler );
+
+	return;
+
+ error:
+	netdev_rx_err ( netdev, iob_disown ( iobuf ), rc );
+ ignore:
+	free_iob ( iobuf );
+	return;
+}
+
+/** Interrupt endpoint operations */
+static struct usb_endpoint_driver_operations ecm_intr_operations = {
+	.complete = ecm_intr_complete,
+};
+
+/******************************************************************************
+ *
+ * CDC-ECM data interface
+ *
+ ******************************************************************************
+ */
+
+/**
+ * Complete bulk IN transfer
+ *
+ * @v ep		USB endpoint
+ * @v iobuf		I/O buffer
+ * @v rc		Completion status code
+ */
+static void ecm_in_complete ( struct usb_endpoint *ep, struct io_buffer *iobuf,
+			      int rc ) {
+	struct ecm_device *ecm = container_of ( ep, struct ecm_device,
+						usbnet.in );
+	struct net_device *netdev = ecm->netdev;
+
+	/* Profile receive completions */
+	profile_start ( &ecm_in_profiler );
+
+	/* Ignore packets cancelled when the endpoint closes */
+	if ( ! ep->open )
+		goto ignore;
+
+	/* Record USB errors against the network device */
+	if ( rc != 0 ) {
+		DBGC ( ecm, "ECM %p bulk IN failed: %s\n",
+		       ecm, strerror ( rc ) );
+		goto error;
+	}
+
+	/* Hand off to network stack */
+	netdev_rx ( netdev, iob_disown ( iobuf ) );
+
+	profile_stop ( &ecm_in_profiler );
+	return;
+
+ error:
+	netdev_rx_err ( netdev, iob_disown ( iobuf ), rc );
+ ignore:
+	free_iob ( iobuf );
+}
+
+/** Bulk IN endpoint operations */
+static struct usb_endpoint_driver_operations ecm_in_operations = {
+	.complete = ecm_in_complete,
+};
+
+/**
+ * Transmit packet
+ *
+ * @v ecm		CDC-ECM device
+ * @v iobuf		I/O buffer
+ * @ret rc		Return status code
+ */
+static int ecm_out_transmit ( struct ecm_device *ecm,
+			      struct io_buffer *iobuf ) {
+	int rc;
+
+	/* Profile transmissions */
+	profile_start ( &ecm_out_profiler );
+
+	/* Enqueue I/O buffer */
+	if ( ( rc = usb_stream ( &ecm->usbnet.out, iobuf, 1 ) ) != 0 )
+		return rc;
+
+	profile_stop ( &ecm_out_profiler );
+	return 0;
+}
+
+/**
+ * Complete bulk OUT transfer
+ *
+ * @v ep		USB endpoint
+ * @v iobuf		I/O buffer
+ * @v rc		Completion status code
+ */
+static void ecm_out_complete ( struct usb_endpoint *ep, struct io_buffer *iobuf,
+			       int rc ) {
+	struct ecm_device *ecm = container_of ( ep, struct ecm_device,
+						usbnet.out );
+	struct net_device *netdev = ecm->netdev;
+
+	/* Report TX completion */
+	netdev_tx_complete_err ( netdev, iobuf, rc );
+}
+
+/** Bulk OUT endpoint operations */
+static struct usb_endpoint_driver_operations ecm_out_operations = {
+	.complete = ecm_out_complete,
+};
+
+/******************************************************************************
+ *
+ * Network device interface
+ *
+ ******************************************************************************
+ */
+
+/**
+ * Open network device
+ *
+ * @v netdev		Network device
+ * @ret rc		Return status code
+ */
+static int ecm_open ( struct net_device *netdev ) {
+	struct ecm_device *ecm = netdev->priv;
+	struct usb_device *usb = ecm->usb;
+	unsigned int filter;
+	int rc;
+
+	/* Open USB network device */
+	if ( ( rc = usbnet_open ( &ecm->usbnet ) ) != 0 ) {
+		DBGC ( ecm, "ECM %p could not open: %s\n",
+		       ecm, strerror ( rc ) );
+		goto err_open;
+	}
+
+	/* Set packet filter */
+	filter = ( ECM_PACKET_TYPE_PROMISCUOUS |
+		   ECM_PACKET_TYPE_ALL_MULTICAST |
+		   ECM_PACKET_TYPE_DIRECTED |
+		   ECM_PACKET_TYPE_BROADCAST );
+	if ( ( rc = usb_control ( usb, ECM_SET_ETHERNET_PACKET_FILTER,
+				  filter, ecm->usbnet.comms, NULL, 0 ) ) != 0 ){
+		DBGC ( ecm, "ECM %p could not set packet filter: %s\n",
+		       ecm, strerror ( rc ) );
+		goto err_set_filter;
+	}
+
+	return 0;
+
+ err_set_filter:
+	usbnet_close ( &ecm->usbnet );
+ err_open:
+	return rc;
+}
+
+/**
+ * Close network device
+ *
+ * @v netdev		Network device
+ */
+static void ecm_close ( struct net_device *netdev ) {
+	struct ecm_device *ecm = netdev->priv;
+
+	/* Close USB network device */
+	usbnet_close ( &ecm->usbnet );
+}
+
+/**
+ * Transmit packet
+ *
+ * @v netdev		Network device
+ * @v iobuf		I/O buffer
+ * @ret rc		Return status code
+ */
+static int ecm_transmit ( struct net_device *netdev,
+			  struct io_buffer *iobuf ) {
+	struct ecm_device *ecm = netdev->priv;
+	int rc;
+
+	/* Transmit packet */
+	if ( ( rc = ecm_out_transmit ( ecm, iobuf ) ) != 0 )
+		return rc;
+
+	return 0;
+}
+
+/**
+ * Poll for completed and received packets
+ *
+ * @v netdev		Network device
+ */
+static void ecm_poll ( struct net_device *netdev ) {
+	struct ecm_device *ecm = netdev->priv;
+	int rc;
+
+	/* Poll USB bus */
+	usb_poll ( ecm->bus );
+
+	/* Refill endpoints */
+	if ( ( rc = usbnet_refill ( &ecm->usbnet ) ) != 0 )
+		netdev_rx_err ( netdev, NULL, rc );
+}
+
+/** CDC-ECM network device operations */
+static struct net_device_operations ecm_operations = {
+	.open		= ecm_open,
+	.close		= ecm_close,
+	.transmit	= ecm_transmit,
+	.poll		= ecm_poll,
+};
+
+/******************************************************************************
+ *
+ * USB interface
+ *
+ ******************************************************************************
+ */
+
+/**
+ * Probe device
+ *
+ * @v func		USB function
+ * @v config		Configuration descriptor
+ * @ret rc		Return status code
+ */
+static int ecm_probe ( struct usb_function *func,
+		       struct usb_configuration_descriptor *config ) {
+	struct usb_device *usb = func->usb;
+	struct net_device *netdev;
+	struct ecm_device *ecm;
+	struct usb_interface_descriptor *comms;
+	struct ecm_ethernet_descriptor *ethernet;
+	int rc;
+
+	/* Allocate and initialise structure */
+	netdev = alloc_etherdev ( sizeof ( *ecm ) );
+	if ( ! netdev ) {
+		rc = -ENOMEM;
+		goto err_alloc;
+	}
+	netdev_init ( netdev, &ecm_operations );
+	netdev->dev = &func->dev;
+	ecm = netdev->priv;
+	memset ( ecm, 0, sizeof ( *ecm ) );
+	ecm->usb = usb;
+	ecm->bus = usb->port->hub->bus;
+	ecm->netdev = netdev;
+	usbnet_init ( &ecm->usbnet, func, &ecm_intr_operations,
+		      &ecm_in_operations, &ecm_out_operations );
+	usb_refill_init ( &ecm->usbnet.intr, 0, ECM_INTR_MAX_FILL );
+	usb_refill_init ( &ecm->usbnet.in, ECM_IN_MTU, ECM_IN_MAX_FILL );
+	DBGC ( ecm, "ECM %p on %s\n", ecm, func->name );
+
+	/* Describe USB network device */
+	if ( ( rc = usbnet_describe ( &ecm->usbnet, config ) ) != 0 ) {
+		DBGC ( ecm, "ECM %p could not describe: %s\n",
+		       ecm, strerror ( rc ) );
+		goto err_describe;
+	}
+
+	/* Locate Ethernet descriptor */
+	comms = usb_interface_descriptor ( config, ecm->usbnet.comms, 0 );
+	assert ( comms != NULL );
+	ethernet = ecm_ethernet_descriptor ( config, comms );
+	if ( ! ethernet ) {
+		DBGC ( ecm, "ECM %p has no Ethernet descriptor\n", ecm );
+		rc = -EINVAL;
+		goto err_ethernet;
+	}
+
+	/* Fetch MAC address */
+	if ( ( rc = ecm_fetch_mac ( usb, ethernet, netdev->hw_addr ) ) != 0 ) {
+		DBGC ( ecm, "ECM %p could not fetch MAC address: %s\n",
+		       ecm, strerror ( rc ) );
+		goto err_fetch_mac;
+	}
+
+	/* Register network device */
+	if ( ( rc = register_netdev ( netdev ) ) != 0 )
+		goto err_register;
+
+	usb_func_set_drvdata ( func, ecm );
+	return 0;
+
+	unregister_netdev ( netdev );
+ err_register:
+ err_fetch_mac:
+ err_ethernet:
+ err_describe:
+	netdev_nullify ( netdev );
+	netdev_put ( netdev );
+ err_alloc:
+	return rc;
+}
+
+/**
+ * Remove device
+ *
+ * @v func		USB function
+ */
+static void ecm_remove ( struct usb_function *func ) {
+	struct ecm_device *ecm = usb_func_get_drvdata ( func );
+	struct net_device *netdev = ecm->netdev;
+
+	unregister_netdev ( netdev );
+	netdev_nullify ( netdev );
+	netdev_put ( netdev );
+}
+
+/** CDC-ECM device IDs */
+static struct usb_device_id ecm_ids[] = {
+	{
+		.name = "cdc-ecm",
+		.vendor = USB_ANY_ID,
+		.product = USB_ANY_ID,
+		.class = {
+			.class = USB_CLASS_CDC,
+			.subclass = USB_SUBCLASS_CDC_ECM,
+			.protocol = 0,
+		},
+	},
+};
+
+/** CDC-ECM driver */
+struct usb_driver ecm_driver __usb_driver = {
+	.ids = ecm_ids,
+	.id_count = ( sizeof ( ecm_ids ) / sizeof ( ecm_ids[0] ) ),
+	.probe = ecm_probe,
+	.remove = ecm_remove,
+};