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- #include <stdint.h>
- #include <stdio.h>
- #include <errno.h>
- #include <gpxe/if_ether.h>
- #include <gpxe/netdevice.h>
- #include <gpxe/ethernet.h>
- #include <gpxe/iobuf.h>
- #include <nic.h>
-
- /*
- * Quick and dirty compatibility layer
- *
- * This should allow old-API PCI drivers to at least function until
- * they are updated. It will not help non-PCI drivers.
- *
- * No drivers should rely on this code. It will be removed asap.
- *
- */
-
- FILE_LICENCE ( GPL2_OR_LATER );
-
- struct nic nic;
-
- static int legacy_registered = 0;
-
- static int legacy_transmit ( struct net_device *netdev, struct io_buffer *iobuf ) {
- struct nic *nic = netdev->priv;
- struct ethhdr *ethhdr;
-
- DBG ( "Transmitting %zd bytes\n", iob_len ( iobuf ) );
- iob_pad ( iobuf, ETH_ZLEN );
- ethhdr = iobuf->data;
- iob_pull ( iobuf, sizeof ( *ethhdr ) );
- nic->nic_op->transmit ( nic, ( const char * ) ethhdr->h_dest,
- ntohs ( ethhdr->h_protocol ),
- iob_len ( iobuf ), iobuf->data );
- netdev_tx_complete ( netdev, iobuf );
- return 0;
- }
-
- static void legacy_poll ( struct net_device *netdev ) {
- struct nic *nic = netdev->priv;
- struct io_buffer *iobuf;
-
- iobuf = alloc_iob ( ETH_FRAME_LEN );
- if ( ! iobuf )
- return;
-
- nic->packet = iobuf->data;
- if ( nic->nic_op->poll ( nic, 1 ) ) {
- DBG ( "Received %d bytes\n", nic->packetlen );
- iob_put ( iobuf, nic->packetlen );
- netdev_rx ( netdev, iobuf );
- } else {
- free_iob ( iobuf );
- }
- }
-
- static int legacy_open ( struct net_device *netdev __unused ) {
- /* Nothing to do */
- return 0;
- }
-
- static void legacy_close ( struct net_device *netdev __unused ) {
- /* Nothing to do */
- }
-
- static void legacy_irq ( struct net_device *netdev __unused, int enable ) {
- struct nic *nic = netdev->priv;
-
- nic->nic_op->irq ( nic, ( enable ? ENABLE : DISABLE ) );
- }
-
- static struct net_device_operations legacy_operations = {
- .open = legacy_open,
- .close = legacy_close,
- .transmit = legacy_transmit,
- .poll = legacy_poll,
- .irq = legacy_irq,
- };
-
- int legacy_probe ( void *hwdev,
- void ( * set_drvdata ) ( void *hwdev, void *priv ),
- struct device *dev,
- int ( * probe ) ( struct nic *nic, void *hwdev ),
- void ( * disable ) ( struct nic *nic, void *hwdev ) ) {
- struct net_device *netdev;
- int rc;
-
- if ( legacy_registered )
- return -EBUSY;
-
- netdev = alloc_etherdev ( 0 );
- if ( ! netdev )
- return -ENOMEM;
- netdev_init ( netdev, &legacy_operations );
- netdev->priv = &nic;
- memset ( &nic, 0, sizeof ( nic ) );
- set_drvdata ( hwdev, netdev );
- netdev->dev = dev;
-
- nic.node_addr = netdev->hw_addr;
- nic.irqno = dev->desc.irq;
-
- if ( ! probe ( &nic, hwdev ) ) {
- rc = -ENODEV;
- goto err_probe;
- }
-
- /* Overwrite the IRQ number. Some legacy devices set
- * nic->irqno to 0 in the probe routine to indicate that they
- * don't support interrupts; doing this allows the timer
- * interrupt to be used instead.
- */
- dev->desc.irq = nic.irqno;
-
- /* Mark as link up; legacy devices don't handle link state */
- netdev_link_up ( netdev );
-
- if ( ( rc = register_netdev ( netdev ) ) != 0 )
- goto err_register;
-
- /* Do not remove this message */
- printf ( "WARNING: Using legacy NIC wrapper on %s\n",
- netdev->ll_protocol->ntoa ( nic.node_addr ) );
-
- legacy_registered = 1;
- return 0;
-
- err_register:
- disable ( &nic, hwdev );
- err_probe:
- netdev_nullify ( netdev );
- netdev_put ( netdev );
- return rc;
- }
-
- void legacy_remove ( void *hwdev,
- void * ( * get_drvdata ) ( void *hwdev ),
- void ( * disable ) ( struct nic *nic, void *hwdev ) ) {
- struct net_device *netdev = get_drvdata ( hwdev );
- struct nic *nic = netdev->priv;
-
- unregister_netdev ( netdev );
- disable ( nic, hwdev );
- netdev_nullify ( netdev );
- netdev_put ( netdev );
- legacy_registered = 0;
- }
-
- int dummy_connect ( struct nic *nic __unused ) {
- return 1;
- }
-
- void dummy_irq ( struct nic *nic __unused, irq_action_t irq_action __unused ) {
- return;
- }
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