1 files changed, 0 insertions, 563 deletions

diff --git a/qemu/roms/ipxe/src/drivers/net/efi/snpnet.c b/qemu/roms/ipxe/src/drivers/net/efi/snpnet.c
deleted file mode 100644
index 96642c4ca..000000000
--- a/qemu/roms/ipxe/src/drivers/net/efi/snpnet.c
+++ /dev/null
@@ -1,563 +0,0 @@
-/*
- * 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 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.
- */
-
-FILE_LICENCE ( GPL2_OR_LATER );
-
-#include <stdlib.h>
-#include <stdio.h>
-#include <string.h>
-#include <errno.h>
-#include <ipxe/iobuf.h>
-#include <ipxe/netdevice.h>
-#include <ipxe/ethernet.h>
-#include <ipxe/vsprintf.h>
-#include <ipxe/efi/efi.h>
-#include <ipxe/efi/Protocol/SimpleNetwork.h>
-#include <ipxe/efi/efi_driver.h>
-#include <ipxe/efi/efi_utils.h>
-#include "snpnet.h"
-
-/** @file
- *
- * SNP NIC driver
- *
- */
-
-/** An SNP NIC */
-struct snp_nic {
-	/** EFI device */
-	struct efi_device *efidev;
-	/** Simple network protocol */
-	EFI_SIMPLE_NETWORK_PROTOCOL *snp;
-	/** Generic device */
-	struct device dev;
-
-	/** Maximum packet size
-	 *
-	 * This is calculated as the sum of MediaHeaderSize and
-	 * MaxPacketSize, and may therefore be an overestimate.
-	 */
-	size_t mtu;
-
-	/** Current transmit buffer */
-	struct io_buffer *txbuf;
-	/** Current receive buffer */
-	struct io_buffer *rxbuf;
-};
-
-/** Maximum number of received packets per poll */
-#define SNP_RX_QUOTA 4
-
-/**
- * Format SNP MAC address (for debugging)
- *
- * @v mac		MAC address
- * @v len		Length of MAC address
- * @ret text		MAC address as text
- */
-static const char * snpnet_mac_text ( EFI_MAC_ADDRESS *mac, size_t len ) {
-	static char buf[ sizeof ( *mac ) * 3 /* "xx:" or "xx\0" */ ];
-	size_t used = 0;
-	unsigned int i;
-
-	for ( i = 0 ; i < len ; i++ ) {
-		used += ssnprintf ( &buf[used], ( sizeof ( buf ) - used ),
-				    "%s%02x", ( used ? ":" : "" ),
-				    mac->Addr[i] );
-	}
-	return buf;
-}
-
-/**
- * Dump SNP mode information (for debugging)
- *
- * @v netdev		Network device
- */
-static void snpnet_dump_mode ( struct net_device *netdev ) {
-	struct snp_nic *snp = netdev_priv ( netdev );
-	EFI_SIMPLE_NETWORK_MODE *mode = snp->snp->Mode;
-	size_t mac_len = mode->HwAddressSize;
-	unsigned int i;
-
-	/* Do nothing unless debugging is enabled */
-	if ( ! DBG_EXTRA )
-		return;
-
-	DBGC2 ( snp, "SNP %s st %d type %d hdr %d pkt %d rxflt %#x/%#x%s "
-		"nvram %d acc %d mcast %d/%d\n", netdev->name, mode->State,
-		mode->IfType, mode->MediaHeaderSize, mode->MaxPacketSize,
-		mode->ReceiveFilterSetting, mode->ReceiveFilterMask,
-		( mode->MultipleTxSupported ? " multitx" : "" ),
-		mode->NvRamSize, mode->NvRamAccessSize,
-		mode->MCastFilterCount, mode->MaxMCastFilterCount );
-	DBGC2 ( snp, "SNP %s hw %s", netdev->name,
-		snpnet_mac_text ( &mode->PermanentAddress, mac_len ) );
-	DBGC2 ( snp, " addr %s%s",
-		snpnet_mac_text ( &mode->CurrentAddress, mac_len ),
-		( mode->MacAddressChangeable ? "" : "(f)" ) );
-	DBGC2 ( snp, " bcast %s\n",
-		snpnet_mac_text ( &mode->BroadcastAddress, mac_len ) );
-	for ( i = 0 ; i < mode->MCastFilterCount ; i++ ) {
-		DBGC2 ( snp, "SNP %s mcast %s\n", netdev->name,
-			snpnet_mac_text ( &mode->MCastFilter[i], mac_len ) );
-	}
-	DBGC2 ( snp, "SNP %s media %s\n", netdev->name,
-		( mode->MediaPresentSupported ?
-		  ( mode->MediaPresent ? "present" : "not present" ) :
-		  "presence not supported" ) );
-}
-
-/**
- * Check link state
- *
- * @v netdev		Network device
- */
-static void snpnet_check_link ( struct net_device *netdev ) {
-	struct snp_nic *snp = netdev_priv ( netdev );
-	EFI_SIMPLE_NETWORK_MODE *mode = snp->snp->Mode;
-
-	/* Do nothing unless media presence detection is supported */
-	if ( ! mode->MediaPresentSupported )
-		return;
-
-	/* Report any link status change */
-	if ( mode->MediaPresent && ( ! netdev_link_ok ( netdev ) ) ) {
-		netdev_link_up ( netdev );
-	} else if ( ( ! mode->MediaPresent ) && netdev_link_ok ( netdev ) ) {
-		netdev_link_down ( netdev );
-	}
-}
-
-/**
- * Transmit packet
- *
- * @v netdev		Network device
- * @v iobuf		I/O buffer
- * @ret rc		Return status code
- */
-static int snpnet_transmit ( struct net_device *netdev,
-			     struct io_buffer *iobuf ) {
-	struct snp_nic *snp = netdev_priv ( netdev );
-	EFI_STATUS efirc;
-	int rc;
-
-	/* Defer the packet if there is already a transmission in progress */
-	if ( snp->txbuf ) {
-		netdev_tx_defer ( netdev, iobuf );
-		return 0;
-	}
-
-	/* Transmit packet */
-	if ( ( efirc = snp->snp->Transmit ( snp->snp, 0, iob_len ( iobuf ),
-					    iobuf->data, NULL, NULL,
-					    NULL ) ) != 0 ) {
-		rc = -EEFI ( efirc );
-		DBGC ( snp, "SNP %s could not transmit: %s\n",
-		       netdev->name, strerror ( rc ) );
-		return rc;
-	}
-	snp->txbuf = iobuf;
-
-	return 0;
-}
-
-/**
- * Poll for completed packets
- *
- * @v netdev		Network device
- */
-static void snpnet_poll_tx ( struct net_device *netdev ) {
-	struct snp_nic *snp = netdev->priv;
-	struct io_buffer *iobuf;
-	UINT32 irq;
-	VOID *txbuf;
-	EFI_STATUS efirc;
-	int rc;
-
-	/* Get status */
-	if ( ( efirc = snp->snp->GetStatus ( snp->snp, &irq, &txbuf ) ) != 0 ) {
-		rc = -EEFI ( efirc );
-		DBGC ( snp, "SNP %s could not get status: %s\n",
-		       netdev->name, strerror ( rc ) );
-		netdev_rx_err ( netdev, NULL, rc );
-		return;
-	}
-
-	/* Do nothing unless we have a completion */
-	if ( ! txbuf )
-		return;
-
-	/* Sanity check */
-	if ( ! snp->txbuf ) {
-		DBGC ( snp, "SNP %s reported spurious TX completion\n",
-		       netdev->name );
-		netdev_tx_err ( netdev, NULL, -EPIPE );
-		return;
-	}
-
-	/* Complete transmission */
-	iobuf = snp->txbuf;
-	snp->txbuf = NULL;
-	netdev_tx_complete ( netdev, iobuf );
-}
-
-/**
- * Poll for received packets
- *
- * @v netdev		Network device
- */
-static void snpnet_poll_rx ( struct net_device *netdev ) {
-	struct snp_nic *snp = netdev->priv;
-	UINTN len;
-	unsigned int quota;
-	EFI_STATUS efirc;
-	int rc;
-
-	/* Retrieve up to SNP_RX_QUOTA packets */
-	for ( quota = SNP_RX_QUOTA ; quota ; quota-- ) {
-
-		/* Allocate buffer, if required */
-		if ( ! snp->rxbuf ) {
-			snp->rxbuf = alloc_iob ( snp->mtu );
-			if ( ! snp->rxbuf ) {
-				/* Leave for next poll */
-				break;
-			}
-		}
-
-		/* Receive packet */
-		len = iob_tailroom ( snp->rxbuf );
-		if ( ( efirc = snp->snp->Receive ( snp->snp, NULL, &len,
-						   snp->rxbuf->data, NULL,
-						   NULL, NULL ) ) != 0 ) {
-
-			/* EFI_NOT_READY is just the usual "no packet"
-			 * status indication; ignore it.
-			 */
-			if ( efirc == EFI_NOT_READY )
-				break;
-
-			/* Anything else is an error */
-			rc = -EEFI ( efirc );
-			DBGC ( snp, "SNP %s could not receive: %s\n",
-			       netdev->name, strerror ( rc ) );
-			netdev_rx_err ( netdev, NULL, rc );
-			break;
-		}
-
-		/* Hand off to network stack */
-		iob_put ( snp->rxbuf, len );
-		netdev_rx ( netdev, snp->rxbuf );
-		snp->rxbuf = NULL;
-	}
-}
-
-/**
- * Poll for completed packets
- *
- * @v netdev		Network device
- */
-static void snpnet_poll ( struct net_device *netdev ) {
-
-	/* Process any TX completions */
-	snpnet_poll_tx ( netdev );
-
-	/* Process any RX completions */
-	snpnet_poll_rx ( netdev );
-
-	/* Check for link state changes */
-	snpnet_check_link ( netdev );
-}
-
-/**
- * Set receive filters
- *
- * @v netdev		Network device
- * @ret rc		Return status code
- */
-static int snpnet_rx_filters ( struct net_device *netdev ) {
-	struct snp_nic *snp = netdev->priv;
-	UINT32 filters[] = {
-		snp->snp->Mode->ReceiveFilterMask,
-		( EFI_SIMPLE_NETWORK_RECEIVE_UNICAST |
-		  EFI_SIMPLE_NETWORK_RECEIVE_MULTICAST |
-		  EFI_SIMPLE_NETWORK_RECEIVE_BROADCAST ),
-		( EFI_SIMPLE_NETWORK_RECEIVE_UNICAST |
-		  EFI_SIMPLE_NETWORK_RECEIVE_BROADCAST ),
-		( EFI_SIMPLE_NETWORK_RECEIVE_UNICAST ),
-	};
-	unsigned int i;
-	EFI_STATUS efirc;
-	int rc;
-
-	/* Try possible receive filters in turn */
-	for ( i = 0; i < ( sizeof ( filters ) / sizeof ( filters[0] ) ); i++ ) {
-		efirc = snp->snp->ReceiveFilters ( snp->snp, filters[i],
-						   0, TRUE, 0, NULL );
-		if ( efirc == 0 )
-			return 0;
-		rc = -EEFI ( efirc );
-		DBGC ( snp, "SNP %s could not set receive filters %#02x (have "
-		       "%#02x): %s\n", netdev->name, filters[i],
-		       snp->snp->Mode->ReceiveFilterSetting, strerror ( rc ) );
-	}
-
-	return rc;
-}
-
-/**
- * Open network device
- *
- * @v netdev		Network device
- * @ret rc		Return status code
- */
-static int snpnet_open ( struct net_device *netdev ) {
-	struct snp_nic *snp = netdev->priv;
-	EFI_MAC_ADDRESS *mac = ( ( void * ) netdev->ll_addr );
-	EFI_STATUS efirc;
-	int rc;
-
-	/* Try setting MAC address (before initialising) */
-	if ( ( efirc = snp->snp->StationAddress ( snp->snp, FALSE, mac ) ) !=0){
-		rc = -EEFI ( efirc );
-		DBGC ( snp, "SNP %s could not set station address before "
-		       "initialising: %s\n", netdev->name, strerror ( rc ) );
-		/* Ignore error */
-	}
-
-	/* Initialise NIC */
-	if ( ( efirc = snp->snp->Initialize ( snp->snp, 0, 0 ) ) != 0 ) {
-		rc = -EEFI ( efirc );
-		snpnet_dump_mode ( netdev );
-		DBGC ( snp, "SNP %s could not initialise: %s\n",
-		       netdev->name, strerror ( rc ) );
-		return rc;
-	}
-
-	/* Try setting MAC address (after initialising) */
-	if ( ( efirc = snp->snp->StationAddress ( snp->snp, FALSE, mac ) ) !=0){
-		rc = -EEFI ( efirc );
-		DBGC ( snp, "SNP %s could not set station address after "
-		       "initialising: %s\n", netdev->name, strerror ( rc ) );
-		/* Ignore error */
-	}
-
-	/* Set receive filters */
-	if ( ( rc = snpnet_rx_filters ( netdev ) ) != 0 ) {
-		/* Ignore error */
-	}
-
-	/* Dump mode information (for debugging) */
-	snpnet_dump_mode ( netdev );
-
-	return 0;
-}
-
-/**
- * Close network device
- *
- * @v netdev		Network device
- */
-static void snpnet_close ( struct net_device *netdev ) {
-	struct snp_nic *snp = netdev->priv;
-	EFI_STATUS efirc;
-	int rc;
-
-	/* Shut down NIC */
-	if ( ( efirc = snp->snp->Shutdown ( snp->snp ) ) != 0 ) {
-		rc = -EEFI ( efirc );
-		DBGC ( snp, "SNP %s could not shut down: %s\n",
-		       netdev->name, strerror ( rc ) );
-		/* Nothing we can do about this */
-	}
-
-	/* Discard transmit buffer, if applicable */
-	if ( snp->txbuf ) {
-		netdev_tx_complete_err ( netdev, snp->txbuf, -ECANCELED );
-		snp->txbuf = NULL;
-	}
-
-	/* Discard receive buffer, if applicable */
-	if ( snp->rxbuf ) {
-		free_iob ( snp->rxbuf );
-		snp->rxbuf = NULL;
-	}
-}
-
-/** SNP network device operations */
-static struct net_device_operations snpnet_operations = {
-	.open = snpnet_open,
-	.close = snpnet_close,
-	.transmit = snpnet_transmit,
-	.poll = snpnet_poll,
-};
-
-/**
- * Attach driver to device
- *
- * @v efidev		EFI device
- * @ret rc		Return status code
- */
-int snpnet_start ( struct efi_device *efidev ) {
-	EFI_BOOT_SERVICES *bs = efi_systab->BootServices;
-	EFI_HANDLE device = efidev->device;
-	EFI_SIMPLE_NETWORK_MODE *mode;
-	struct net_device *netdev;
-	struct snp_nic *snp;
-	void *interface;
-	EFI_STATUS efirc;
-	int rc;
-
-	/* Open SNP protocol */
-	if ( ( efirc = bs->OpenProtocol ( device,
-					  &efi_simple_network_protocol_guid,
-					  &interface, efi_image_handle, device,
-					  ( EFI_OPEN_PROTOCOL_BY_DRIVER |
-					    EFI_OPEN_PROTOCOL_EXCLUSIVE )))!=0){
-		rc = -EEFI ( efirc );
-		DBGC ( device, "SNP %p %s cannot open SNP protocol: %s\n",
-		       device, efi_handle_name ( device ), strerror ( rc ) );
-		DBGC_EFI_OPENERS ( device, device,
-				   &efi_simple_network_protocol_guid );
-		goto err_open_protocol;
-	}
-
-	/* Allocate and initialise structure */
-	netdev = alloc_etherdev ( sizeof ( *snp ) );
-	if ( ! netdev ) {
-		rc = -ENOMEM;
-		goto err_alloc;
-	}
-	netdev_init ( netdev, &snpnet_operations );
-	snp = netdev->priv;
-	snp->efidev = efidev;
-	snp->snp = interface;
-	mode = snp->snp->Mode;
-	efidev_set_drvdata ( efidev, netdev );
-
-	/* Populate underlying device information */
-	efi_device_info ( device, "SNP", &snp->dev );
-	snp->dev.driver_name = "SNP";
-	snp->dev.parent = &efidev->dev;
-	list_add ( &snp->dev.siblings, &efidev->dev.children );
-	INIT_LIST_HEAD ( &snp->dev.children );
-	netdev->dev = &snp->dev;
-
-	/* Bring to the Started state */
-	if ( ( mode->State == EfiSimpleNetworkStopped ) &&
-	     ( ( efirc = snp->snp->Start ( snp->snp ) ) != 0 ) ) {
-		rc = -EEFI ( efirc );
-		DBGC ( device, "SNP %p %s could not start: %s\n", device,
-		       efi_handle_name ( device ), strerror ( rc ) );
-		goto err_start;
-	}
-	if ( ( mode->State == EfiSimpleNetworkInitialized ) &&
-	     ( ( efirc = snp->snp->Shutdown ( snp->snp ) ) != 0 ) ) {
-		rc = -EEFI ( efirc );
-		DBGC ( device, "SNP %p %s could not shut down: %s\n", device,
-		       efi_handle_name ( device ), strerror ( rc ) );
-		goto err_shutdown;
-	}
-
-	/* Populate network device parameters */
-	if ( mode->HwAddressSize != netdev->ll_protocol->hw_addr_len ) {
-		DBGC ( device, "SNP %p %s has invalid hardware address "
-		       "length %d\n", device, efi_handle_name ( device ),
-		       mode->HwAddressSize );
-		rc = -ENOTSUP;
-		goto err_hw_addr_len;
-	}
-	memcpy ( netdev->hw_addr, &mode->PermanentAddress,
-		 netdev->ll_protocol->hw_addr_len );
-	if ( mode->HwAddressSize != netdev->ll_protocol->ll_addr_len ) {
-		DBGC ( device, "SNP %p %s has invalid link-layer address "
-		       "length %d\n", device, efi_handle_name ( device ),
-		       mode->HwAddressSize );
-		rc = -ENOTSUP;
-		goto err_ll_addr_len;
-	}
-	memcpy ( netdev->ll_addr, &mode->CurrentAddress,
-		 netdev->ll_protocol->ll_addr_len );
-	snp->mtu = ( snp->snp->Mode->MaxPacketSize +
-		     snp->snp->Mode->MediaHeaderSize );
-
-	/* Register network device */
-	if ( ( rc = register_netdev ( netdev ) ) != 0 )
-		goto err_register_netdev;
-	DBGC ( device, "SNP %p %s registered as %s\n",
-	       device, efi_handle_name ( device ), netdev->name );
-
-	/* Set initial link state */
-	if ( snp->snp->Mode->MediaPresentSupported ) {
-		snpnet_check_link ( netdev );
-	} else {
-		netdev_link_up ( netdev );
-	}
-
-	return 0;
-
-	unregister_netdev ( netdev );
- err_register_netdev:
- err_ll_addr_len:
- err_hw_addr_len:
- err_shutdown:
- err_start:
-	list_del ( &snp->dev.siblings );
-	netdev_nullify ( netdev );
-	netdev_put ( netdev );
- err_alloc:
-	bs->CloseProtocol ( device, &efi_simple_network_protocol_guid,
-			    efi_image_handle, device );
- err_open_protocol:
-	return rc;
-}
-
-/**
- * Detach driver from device
- *
- * @v efidev		EFI device
-  */
-void snpnet_stop ( struct efi_device *efidev ) {
-	EFI_BOOT_SERVICES *bs = efi_systab->BootServices;
-	struct net_device *netdev = efidev_get_drvdata ( efidev );
-	struct snp_nic *snp = netdev->priv;
-	EFI_HANDLE device = efidev->device;
-	EFI_STATUS efirc;
-	int rc;
-
-	/* Unregister network device */
-	unregister_netdev ( netdev );
-
-	/* Stop SNP protocol */
-	if ( ( efirc = snp->snp->Stop ( snp->snp ) ) != 0 ) {
-		rc = -EEFI ( efirc );
-		DBGC ( device, "SNP %p %s could not stop: %s\n", device,
-		       efi_handle_name ( device ), strerror ( rc ) );
-		/* Nothing we can do about this */
-	}
-
-	/* Free network device */
-	list_del ( &snp->dev.siblings );
-	netdev_nullify ( netdev );
-	netdev_put ( netdev );
-
-	/* Close SNP protocol */
-	bs->CloseProtocol ( device, &efi_simple_network_protocol_guid,
-			    efi_image_handle, device );
-}