/**
* Check for link state changes
*
* @v netdev Network device
* @v stat Status flags
*/
static void nii_poll_link ( struct net_device *netdev, unsigned int stat ) {
int no_media = ( stat & PXE_STATFLAGS_GET_STATUS_NO_MEDIA );
if ( no_media && netdev_link_ok ( netdev ) ) {
netdev_link_down ( netdev );
} else if ( ( ! no_media ) && ( ! netdev_link_ok ( netdev ) ) ) {
netdev_link_up ( netdev );
}
}
/** Handle a device request for the af_packet driver */
static int af_packet_nic_probe ( struct linux_device *device,
struct linux_device_request *request )
{
struct linux_setting *if_setting;
struct net_device *netdev;
struct af_packet_nic *nic;
int rc;
netdev = alloc_etherdev(sizeof(*nic));
if (! netdev)
return -ENOMEM;
netdev_init(netdev, &af_packet_nic_operations);
nic = netdev->priv;
linux_set_drvdata(device, netdev);
netdev->dev = &device->dev;
memset(nic, 0, sizeof(*nic));
/* Look for the mandatory if setting */
if_setting = linux_find_setting("if", &request->settings);
/* No if setting */
if (! if_setting) {
printf("af_packet missing a mandatory if setting\n");
rc = -EINVAL;
goto err_settings;
}
nic->ifname = if_setting->value;
snprintf ( device->dev.name, sizeof ( device->dev.name ), "%s",
nic->ifname );
device->dev.desc.bus_type = BUS_TYPE_TAP;
af_packet_update_properties(netdev);
if_setting->applied = 1;
/* Apply rest of the settings */
linux_apply_settings(&request->settings, &netdev->settings.settings);
/* Register network device */
if ((rc = register_netdev(netdev)) != 0)
goto err_register;
netdev_link_up(netdev);
return 0;
err_settings:
unregister_netdev(netdev);
err_register:
netdev_nullify(netdev);
netdev_put(netdev);
return rc;
}
/**
* Probe PCI device
*
* @v pci PCI device
* @ret rc Return status code
*/
static int myson_probe ( struct pci_device *pci ) {
struct net_device *netdev;
struct myson_nic *myson;
union myson_physical_address mac;
int rc;
/* Allocate and initialise net device */
netdev = alloc_etherdev ( sizeof ( *myson ) );
if ( ! netdev ) {
rc = -ENOMEM;
goto err_alloc;
}
netdev_init ( netdev, &myson_operations );
myson = netdev->priv;
pci_set_drvdata ( pci, netdev );
netdev->dev = &pci->dev;
memset ( myson, 0, sizeof ( *myson ) );
myson_init_ring ( &myson->tx, MYSON_NUM_TX_DESC, MYSON_TXLBA );
myson_init_ring ( &myson->rx, MYSON_NUM_RX_DESC, MYSON_RXLBA );
/* Fix up PCI device */
adjust_pci_device ( pci );
/* Map registers */
myson->regs = ioremap ( pci->membase, MYSON_BAR_SIZE );
/* Reset the NIC */
if ( ( rc = myson_reset ( myson ) ) != 0 )
goto err_reset;
/* Read MAC address */
mac.reg.low = cpu_to_le32 ( readl ( myson->regs + MYSON_PAR0 ) );
mac.reg.high = cpu_to_le32 ( readl ( myson->regs + MYSON_PAR4 ) );
memcpy ( netdev->hw_addr, mac.raw, ETH_ALEN );
/* Register network device */
if ( ( rc = register_netdev ( netdev ) ) != 0 )
goto err_register_netdev;
/* Mark as link up; we don't yet handle link state */
netdev_link_up ( netdev );
return 0;
unregister_netdev ( netdev );
err_register_netdev:
myson_reset ( myson );
err_reset:
iounmap ( myson->regs );
netdev_nullify ( netdev );
netdev_put ( netdev );
err_alloc:
return rc;
}
/**
* Update link status based on network status register
*
* @v dm96xx DM96xx device
* @v nsr Network status register
*/
static void dm96xx_link_nsr ( struct dm96xx_device *dm96xx, unsigned int nsr ) {
struct net_device *netdev = dm96xx->netdev;
if ( nsr & DM96XX_NSR_LINKST ) {
if ( ! netdev_link_ok ( netdev ) )
netdev_link_up ( netdev );
} else {
if ( netdev_link_ok ( netdev ) )
netdev_link_down ( netdev );
}
}
/**
* mii_check_link - check MII link status
* @mii: MII interface
*
* If the link status changed (previous != current), call
* netif_carrier_on() if current link status is Up or call
* netif_carrier_off() if current link status is Down.
*/
void mii_check_link(struct mii_if_info *mii)
{
#warning "figure out what to do about etherboot netdev; does ours work?"
#if 0
int cur_link = mii_link_ok(mii);
int prev_link = netdev_link_ok(mii->dev);
if (cur_link && !prev_link)
netdev_link_up(mii->dev);
else if (prev_link && !cur_link)
netdev_link_down(mii->dev);
#endif
}
/**
* Handle link status event
*
* @v netdev Network device
* @v link Link status
*/
static void intelxlvf_admin_link ( struct net_device *netdev,
struct intelxl_admin_vf_status_link *link ) {
struct intelxl_nic *intelxl = netdev->priv;
DBGC ( intelxl, "INTELXL %p link %#02x speed %#02x\n", intelxl,
link->status, link->speed );
/* Update network device */
if ( link->status ) {
netdev_link_up ( netdev );
} else {
netdev_link_down ( netdev );
}
}
/**
* 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 );
}
}
/**
* Check link state
*
* @v netdev Network device
*/
static void intelxvf_check_link ( struct net_device *netdev ) {
struct intel_nic *intel = netdev->priv;
uint32_t links;
/* Read link status */
links = readl ( intel->regs + INTELXVF_LINKS );
DBGC ( intel, "INTEL %p link status is %08x\n", intel, links );
/* Update network device */
if ( links & INTELXVF_LINKS_UP ) {
netdev_link_up ( netdev );
} else {
netdev_link_down ( netdev );
}
}
/**
* Check link state
*
* @v netdev Network device
*/
static void rhine_check_link ( struct net_device *netdev ) {
struct rhine_nic *rhn = netdev->priv;
uint8_t mii_sr;
/* Read MII status register */
mii_sr = readb ( rhn->regs + RHINE_MII_SR );
DBGC ( rhn, "RHINE %p link status %02x\n", rhn, mii_sr );
/* Report link state */
if ( ! ( mii_sr & RHINE_MII_SR_LINKPOLL ) ) {
netdev_link_up ( netdev );
} else if ( mii_sr & RHINE_MII_SR_PHYERR ) {
netdev_link_err ( netdev, -EIO );
} else {
netdev_link_down ( netdev );
}
}
/**
* 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 %s cannot open SNP protocol: %s\n",
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 %s could not start: %s\n",
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 %s could not shut down: %s\n",
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 %s has invalid hardware address length "
"%d\n", 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 %s has invalid link-layer address length "
"%d\n", 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 %s registered as %s\n",
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;
}
/**
* Attach driver to device
*
* @v efidev EFI device
* @ret rc Return status code
*/
int nii_start ( struct efi_device *efidev ) {
EFI_BOOT_SERVICES *bs = efi_systab->BootServices;
EFI_HANDLE device = efidev->device;
struct net_device *netdev;
struct nii_nic *nii;
void *interface;
EFI_STATUS efirc;
int rc;
/* Allocate and initialise structure */
netdev = alloc_netdev ( sizeof ( *nii ) );
if ( ! netdev ) {
rc = -ENOMEM;
goto err_alloc;
}
netdev_init ( netdev, &nii_operations );
nii = netdev->priv;
nii->efidev = efidev;
netdev->ll_broadcast = nii->broadcast;
efidev_set_drvdata ( efidev, netdev );
/* Populate underlying device information */
efi_device_info ( device, "NII", &nii->dev );
nii->dev.driver_name = "NII";
nii->dev.parent = &efidev->dev;
list_add ( &nii->dev.siblings, &efidev->dev.children );
INIT_LIST_HEAD ( &nii->dev.children );
netdev->dev = &nii->dev;
/* Open NII protocol */
if ( ( efirc = bs->OpenProtocol ( device, &efi_nii31_protocol_guid,
&interface, efi_image_handle, device,
( EFI_OPEN_PROTOCOL_BY_DRIVER |
EFI_OPEN_PROTOCOL_EXCLUSIVE )))!=0){
rc = -EEFI ( efirc );
DBGC ( nii, "NII %s cannot open NII protocol: %s\n",
nii->dev.name, strerror ( rc ) );
DBGC_EFI_OPENERS ( device, device, &efi_nii31_protocol_guid );
goto err_open_protocol;
}
nii->nii = interface;
/* Locate UNDI and entry point */
nii->undi = ( ( void * ) ( intptr_t ) nii->nii->Id );
if ( ! nii->undi ) {
DBGC ( nii, "NII %s has no UNDI\n", nii->dev.name );
rc = -ENODEV;
goto err_no_undi;
}
if ( nii->undi->Implementation & PXE_ROMID_IMP_HW_UNDI ) {
DBGC ( nii, "NII %s is a mythical hardware UNDI\n",
nii->dev.name );
rc = -ENOTSUP;
goto err_hw_undi;
}
if ( nii->undi->Implementation & PXE_ROMID_IMP_SW_VIRT_ADDR ) {
nii->issue = ( ( void * ) ( intptr_t ) nii->undi->EntryPoint );
} else {
nii->issue = ( ( ( void * ) nii->undi ) +
nii->undi->EntryPoint );
}
DBGC ( nii, "NII %s using UNDI v%x.%x at %p entry %p\n", nii->dev.name,
nii->nii->MajorVer, nii->nii->MinorVer, nii->undi, nii->issue );
/* Open PCI I/O protocols and locate BARs */
if ( ( rc = nii_pci_open ( nii ) ) != 0 )
goto err_pci_open;
/* Start UNDI */
if ( ( rc = nii_start_undi ( nii ) ) != 0 )
goto err_start_undi;
/* Get initialisation information */
if ( ( rc = nii_get_init_info ( nii, netdev ) ) != 0 )
goto err_get_init_info;
/* Get MAC addresses */
if ( ( rc = nii_get_station_address ( nii, netdev ) ) != 0 )
goto err_get_station_address;
/* Register network device */
if ( ( rc = register_netdev ( netdev ) ) != 0 )
goto err_register_netdev;
DBGC ( nii, "NII %s registered as %s for %p %s\n", nii->dev.name,
netdev->name, device, efi_handle_name ( device ) );
/* Set initial link state (if media detection is not supported) */
if ( ! nii->media )
netdev_link_up ( netdev );
return 0;
unregister_netdev ( netdev );
err_register_netdev:
err_get_station_address:
err_get_init_info:
nii_stop_undi ( nii );
err_start_undi:
nii_pci_close ( nii );
err_pci_open:
err_hw_undi:
err_no_undi:
bs->CloseProtocol ( device, &efi_nii31_protocol_guid,
efi_image_handle, device );
err_open_protocol:
list_del ( &nii->dev.siblings );
netdev_nullify ( netdev );
netdev_put ( netdev );
err_alloc:
return rc;
}
/**
* Probe device
*
* @v pci PCI device
* @v id Matching entry in ID table
* @ret rc Return status code
*/
static int b44_probe(struct pci_device *pci, const struct pci_device_id *id)
{
struct net_device *netdev;
struct b44_private *bp;
int rc;
/*
* Bail out if more than 1GB of physical RAM is installed.
* This limitation will be removed later when dma mapping
* is merged into mainline.
*/
if (!phys_ram_within_limit(B44_30BIT_DMA_MASK)) {
DBG("Sorry, this version of the driver does not\n"
"support systems with more than 1GB of RAM.\n");
return -ENOMEM;
}
/* Set up netdev */
netdev = alloc_etherdev(sizeof(*bp));
if (!netdev)
return -ENOMEM;
netdev_init(netdev, &b44_operations);
pci_set_drvdata(pci, netdev);
netdev->dev = &pci->dev;
/* Set up private data */
bp = netdev_priv(netdev);
memset(bp, 0, sizeof(*bp));
bp->netdev = netdev;
bp->pci = pci;
/* Map device registers */
bp->regs = ioremap(pci->membase, B44_REGS_SIZE);
if (!bp->regs) {
netdev_put(netdev);
return -ENOMEM;
}
/* Enable PCI bus mastering */
adjust_pci_device(pci);
b44_load_mac_and_phy_addr(bp);
/* Link management currently not implemented */
netdev_link_up(netdev);
rc = register_netdev(netdev);
if (rc != 0) {
iounmap(bp->regs);
netdev_put(netdev);
return rc;
}
b44_chip_reset(bp, B44_CHIP_RESET_FULL);
DBG("b44 %s (%04x:%04x) regs=%p MAC=%s\n", id->name, id->vendor,
id->device, bp->regs, eth_ntoa(netdev->ll_addr));
return 0;
}
/**
* e1000_probe - Initial configuration of e1000 NIC
*
* @v pci PCI device
* @v id PCI IDs
*
* @ret rc Return status code
**/
int e1000e_probe ( struct pci_device *pdev,
const struct pci_device_id *ent)
{
int i, err;
struct net_device *netdev;
struct e1000_adapter *adapter;
unsigned long mmio_start, mmio_len;
unsigned long flash_start, flash_len;
struct e1000_hw *hw;
const struct e1000_info *ei = e1000_info_tbl[ent->driver_data];
DBGP ( "e1000_probe\n" );
err = -ENOMEM;
/* Allocate net device ( also allocates memory for netdev->priv
and makes netdev-priv point to it ) */
netdev = alloc_etherdev ( sizeof ( struct e1000_adapter ) );
if ( ! netdev ) {
DBG ( "err_alloc_etherdev\n" );
goto err_alloc_etherdev;
}
/* Associate e1000-specific network operations operations with
* generic network device layer */
netdev_init ( netdev, &e1000e_operations );
/* Associate this network device with given PCI device */
pci_set_drvdata ( pdev, netdev );
netdev->dev = &pdev->dev;
/* Initialize driver private storage */
adapter = netdev_priv ( netdev );
memset ( adapter, 0, ( sizeof ( *adapter ) ) );
adapter->pdev = pdev;
adapter->ioaddr = pdev->ioaddr;
adapter->hw.io_base = pdev->ioaddr;
hw = &adapter->hw;
hw->device_id = pdev->device;
adapter->irqno = pdev->irq;
adapter->netdev = netdev;
adapter->hw.back = adapter;
adapter->ei = ei;
adapter->pba = ei->pba;
adapter->flags = ei->flags;
adapter->flags2 = ei->flags2;
adapter->hw.adapter = adapter;
adapter->hw.mac.type = ei->mac;
adapter->max_hw_frame_size = ETH_FRAME_LEN + ETH_FCS_LEN;
adapter->tx_ring_size = sizeof ( *adapter->tx_base ) * NUM_TX_DESC;
adapter->rx_ring_size = sizeof ( *adapter->rx_base ) * NUM_RX_DESC;
/* Fix up PCI device */
adjust_pci_device ( pdev );
err = -EIO;
mmio_start = pci_bar_start ( pdev, PCI_BASE_ADDRESS_0 );
mmio_len = pci_bar_size ( pdev, PCI_BASE_ADDRESS_0 );
DBG ( "mmio_start: %#08lx\n", mmio_start );
DBG ( "mmio_len: %#08lx\n", mmio_len );
adapter->hw.hw_addr = ioremap ( mmio_start, mmio_len );
DBG ( "adapter->hw.hw_addr: %p\n", adapter->hw.hw_addr );
if ( ! adapter->hw.hw_addr ) {
DBG ( "err_ioremap\n" );
goto err_ioremap;
}
/* Flash BAR mapping depends on mac_type */
if ( ( adapter->flags & FLAG_HAS_FLASH) && ( pdev->ioaddr ) ) {
flash_start = pci_bar_start ( pdev, PCI_BASE_ADDRESS_1 );
flash_len = pci_bar_size ( pdev, PCI_BASE_ADDRESS_1 );
adapter->hw.flash_address = ioremap ( flash_start, flash_len );
if ( ! adapter->hw.flash_address ) {
DBG ( "err_flashmap\n" );
goto err_flashmap;
}
}
/* setup adapter struct */
err = e1000e_sw_init ( adapter );
if (err) {
DBG ( "err_sw_init\n" );
goto err_sw_init;
}
if (ei->get_variants) {
err = ei->get_variants(adapter);
if (err) {
DBG ( "err_hw_initr\n" );
goto err_hw_init;
}
}
/* Copper options */
if (adapter->hw.phy.media_type == e1000_media_type_copper) {
adapter->hw.phy.mdix = AUTO_ALL_MODES;
adapter->hw.phy.disable_polarity_correction = 0;
adapter->hw.phy.ms_type = e1000_ms_hw_default;
}
DBG ( "adapter->hw.mac.type: %#08x\n", adapter->hw.mac.type );
/* Force auto-negotiation */
adapter->hw.mac.autoneg = 1;
adapter->fc_autoneg = 1;
adapter->hw.phy.autoneg_wait_to_complete = true;
adapter->hw.mac.adaptive_ifs = true;
adapter->hw.fc.requested_mode = e1000_fc_default;
adapter->hw.fc.current_mode = e1000_fc_default;
/*
* before reading the NVM, reset the controller to
* put the device in a known good starting state
*/
adapter->hw.mac.ops.reset_hw(&adapter->hw);
/*
* systems with ASPM and others may see the checksum fail on the first
* attempt. Let's give it a few tries
*/
for (i = 0;; i++) {
if (e1000e_validate_nvm_checksum(&adapter->hw) >= 0)
break;
if (i == 2) {
DBG("The NVM Checksum Is Not Valid\n");
err = -EIO;
goto err_eeprom;
}
}
/* copy the MAC address out of the EEPROM */
if ( e1000e_read_mac_addr ( &adapter->hw ) )
DBG ( "EEPROM Read Error\n" );
memcpy ( netdev->hw_addr, adapter->hw.mac.perm_addr, ETH_ALEN );
/* reset the hardware with the new settings */
e1000e_reset ( adapter );
/* Mark as link up; we don't yet handle link state */
netdev_link_up ( netdev );
if ( ( err = register_netdev ( netdev ) ) != 0) {
DBG ( "err_register\n" );
goto err_register;
}
for (i = 0; i < 6; i++)
DBG ("%02x%s", netdev->ll_addr[i], i == 5 ? "\n" : ":");
DBG ( "e1000e_probe succeeded!\n" );
/* No errors, return success */
return 0;
/* Error return paths */
err_register:
err_hw_init:
err_eeprom:
err_flashmap:
if (!e1000e_check_reset_block(&adapter->hw))
e1000e_phy_hw_reset(&adapter->hw);
if (adapter->hw.flash_address)
iounmap(adapter->hw.flash_address);
err_sw_init:
iounmap ( adapter->hw.hw_addr );
err_ioremap:
netdev_put ( netdev );
err_alloc_etherdev:
return err;
}
/**
* Open network device
*
* @v netdev Network device
* @ret rc Return status code
*/
static int netfront_open ( struct net_device *netdev ) {
struct netfront_nic *netfront = netdev->priv;
struct xen_device *xendev = netfront->xendev;
int rc;
/* Ensure device is in a suitable initial state */
if ( ( rc = netfront_reset ( netfront ) ) != 0 )
goto err_reset;
/* Create transmit descriptor ring */
if ( ( rc = netfront_create_ring ( netfront, &netfront->tx ) ) != 0 )
goto err_create_tx;
SHARED_RING_INIT ( netfront->tx_sring );
FRONT_RING_INIT ( &netfront->tx_fring, netfront->tx_sring, PAGE_SIZE );
assert ( RING_SIZE ( &netfront->tx_fring ) >= netfront->tx.count );
/* Create receive descriptor ring */
if ( ( rc = netfront_create_ring ( netfront, &netfront->rx ) ) != 0 )
goto err_create_rx;
SHARED_RING_INIT ( netfront->rx_sring );
FRONT_RING_INIT ( &netfront->rx_fring, netfront->rx_sring, PAGE_SIZE );
assert ( RING_SIZE ( &netfront->rx_fring ) >= netfront->rx.count );
/* Create event channel */
if ( ( rc = netfront_create_event ( netfront ) ) != 0 )
goto err_create_event;
/* "Request" the rx-copy feature. Current versions of
* xen_netback.ko will fail silently if this parameter is not
* present.
*/
if ( ( rc = netfront_write_flag ( netfront, "request-rx-copy" ) ) != 0 )
goto err_request_rx_copy;
/* Disable checksum offload, since we will always do the work anyway */
if ( ( rc = netfront_write_flag ( netfront,
"feature-no-csum-offload" ) ) != 0 )
goto err_feature_no_csum_offload;
/* Inform backend that we will send notifications for RX requests */
if ( ( rc = netfront_write_flag ( netfront,
"feature-rx-notify" ) ) != 0 )
goto err_feature_rx_notify;
/* Set state to Connected */
if ( ( rc = xenbus_set_state ( xendev, XenbusStateConnected ) ) != 0 ) {
DBGC ( netfront, "NETFRONT %s could not set state=\"%d\": %s\n",
xendev->key, XenbusStateConnected, strerror ( rc ) );
goto err_set_state;
}
/* Wait for backend to connect */
if ( ( rc = xenbus_backend_wait ( xendev, XenbusStateConnected ) ) !=0){
DBGC ( netfront, "NETFRONT %s could not connect to backend: "
"%s\n", xendev->key, strerror ( rc ) );
goto err_backend_wait;
}
/* Refill receive descriptor ring */
netfront_refill_rx ( netdev );
/* Set link up */
netdev_link_up ( netdev );
return 0;
err_backend_wait:
netfront_reset ( netfront );
err_set_state:
netfront_rm ( netfront, "feature-rx-notify" );
err_feature_rx_notify:
netfront_rm ( netfront, "feature-no-csum-offload" );
err_feature_no_csum_offload:
netfront_rm ( netfront, "request-rx-copy" );
err_request_rx_copy:
netfront_destroy_event ( netfront );
err_create_event:
netfront_destroy_ring ( netfront, &netfront->rx, NULL );
err_create_rx:
netfront_destroy_ring ( netfront, &netfront->tx, NULL );
err_create_tx:
err_reset:
return rc;
}
/**
* e1000_probe - Initial configuration of e1000 NIC
*
* @v pci PCI device
* @v id PCI IDs
*
* @ret rc Return status code
**/
int e1000_probe ( struct pci_device *pdev )
{
int i, err;
struct net_device *netdev;
struct e1000_adapter *adapter;
unsigned long mmio_start, mmio_len;
DBG ( "e1000_probe\n" );
err = -ENOMEM;
/* Allocate net device ( also allocates memory for netdev->priv
and makes netdev-priv point to it ) */
netdev = alloc_etherdev ( sizeof ( struct e1000_adapter ) );
if ( ! netdev )
goto err_alloc_etherdev;
/* Associate e1000-specific network operations operations with
* generic network device layer */
netdev_init ( netdev, &e1000_operations );
/* Associate this network device with given PCI device */
pci_set_drvdata ( pdev, netdev );
netdev->dev = &pdev->dev;
/* Initialize driver private storage */
adapter = netdev_priv ( netdev );
memset ( adapter, 0, ( sizeof ( *adapter ) ) );
adapter->pdev = pdev;
adapter->ioaddr = pdev->ioaddr;
adapter->hw.io_base = pdev->ioaddr;
adapter->irqno = pdev->irq;
adapter->netdev = netdev;
adapter->hw.back = adapter;
adapter->tx_ring_size = sizeof ( *adapter->tx_base ) * NUM_TX_DESC;
adapter->rx_ring_size = sizeof ( *adapter->rx_base ) * NUM_RX_DESC;
mmio_start = pci_bar_start ( pdev, PCI_BASE_ADDRESS_0 );
mmio_len = pci_bar_size ( pdev, PCI_BASE_ADDRESS_0 );
DBG ( "mmio_start: %#08lx\n", mmio_start );
DBG ( "mmio_len: %#08lx\n", mmio_len );
/* Fix up PCI device */
adjust_pci_device ( pdev );
err = -EIO;
adapter->hw.hw_addr = ioremap ( mmio_start, mmio_len );
DBG ( "adapter->hw.hw_addr: %p\n", adapter->hw.hw_addr );
if ( ! adapter->hw.hw_addr )
goto err_ioremap;
/* Hardware features, flags and workarounds */
if (adapter->hw.mac.type >= e1000_82540) {
adapter->flags |= E1000_FLAG_HAS_SMBUS;
adapter->flags |= E1000_FLAG_HAS_INTR_MODERATION;
}
if (adapter->hw.mac.type == e1000_82543)
adapter->flags |= E1000_FLAG_BAD_TX_CARRIER_STATS_FD;
adapter->hw.phy.autoneg_wait_to_complete = true;
adapter->hw.mac.adaptive_ifs = true;
/* setup the private structure */
if ( ( err = e1000_sw_init ( adapter ) ) )
goto err_sw_init;
if ((err = e1000_init_mac_params(&adapter->hw)))
goto err_hw_init;
if ((err = e1000_init_nvm_params(&adapter->hw)))
goto err_hw_init;
/* Force auto-negotiated speed and duplex */
adapter->hw.mac.autoneg = 1;
if ((err = e1000_init_phy_params(&adapter->hw)))
goto err_hw_init;
DBG ( "adapter->hw.mac.type: %#08x\n", adapter->hw.mac.type );
/* before reading the EEPROM, reset the controller to
* put the device in a known good starting state
*/
err = e1000_reset_hw ( &adapter->hw );
if ( err < 0 ) {
DBG ( "Hardware Initialization Failed\n" );
goto err_reset;
}
/* make sure the NVM is good */
if ( e1000_validate_nvm_checksum(&adapter->hw) < 0 ) {
DBG ( "The NVM Checksum Is Not Valid\n" );
err = -EIO;
goto err_eeprom;
}
/* copy the MAC address out of the EEPROM */
if ( e1000_read_mac_addr ( &adapter->hw ) )
DBG ( "EEPROM Read Error\n" );
memcpy ( netdev->hw_addr, adapter->hw.mac.perm_addr, ETH_ALEN );
/* reset the hardware with the new settings */
e1000_reset ( adapter );
if ( ( err = register_netdev ( netdev ) ) != 0)
goto err_register;
/* Mark as link up; we don't yet handle link state */
netdev_link_up ( netdev );
for (i = 0; i < 6; i++)
DBG ("%02x%s", netdev->ll_addr[i], i == 5 ? "\n" : ":");
DBG ( "e1000_probe succeeded!\n" );
/* No errors, return success */
return 0;
/* Error return paths */
err_reset:
err_register:
err_hw_init:
err_eeprom:
if (!e1000_check_reset_block(&adapter->hw))
e1000_phy_hw_reset(&adapter->hw);
if (adapter->hw.flash_address)
iounmap(adapter->hw.flash_address);
err_sw_init:
iounmap ( adapter->hw.hw_addr );
err_ioremap:
netdev_put ( netdev );
err_alloc_etherdev:
return err;
}
