Add qemu 2.4.0

[kvmfornfv.git] / qemu / roms / ipxe / src / drivers / net / legacy.c

diff --git a/qemu/roms/ipxe/src/drivers/net/legacy.c b/qemu/roms/ipxe/src/drivers/net/legacy.c
new file mode 100644 (file)
index 0000000..4edbef1
--- /dev/null
+++ b/qemu/roms/ipxe/src/drivers/net/legacy.c
@@ -0,0 +1,157 @@
+#include <stdint.h>
+#include <stdio.h>
+#include <errno.h>
+#include <ipxe/if_ether.h>
+#include <ipxe/netdevice.h>
+#include <ipxe/ethernet.h>
+#include <ipxe/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;
+
+       if ( ( rc = register_netdev ( netdev ) ) != 0 )
+               goto err_register;
+
+       /* Mark as link up; legacy devices don't handle link state */
+       netdev_link_up ( netdev );
+
+       /* 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;
+}