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https://github.com/xcat2/xNBA.git
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[skel] Add skeleton network driver
Signed-off-by: Michael Brown <mcb30@ipxe.org>
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Michael Brown
parent
8b0305e285
commit
38d2ad8676
308
src/drivers/net/skeleton.c
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308
src/drivers/net/skeleton.c
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/*
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* Copyright (C) 2012 Michael Brown <mbrown@fensystems.co.uk>.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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* 02110-1301, USA.
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*/
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FILE_LICENCE ( GPL2_OR_LATER );
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#include <stdint.h>
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#include <string.h>
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#include <unistd.h>
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#include <errno.h>
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#include <byteswap.h>
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#include <ipxe/netdevice.h>
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#include <ipxe/ethernet.h>
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#include <ipxe/if_ether.h>
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#include <ipxe/iobuf.h>
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#include <ipxe/malloc.h>
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#include <ipxe/pci.h>
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#include <ipxe/mii.h>
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#include "skeleton.h"
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/** @file
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*
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* Skeleton network driver
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*
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*/
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/******************************************************************************
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*
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* MII interface
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*
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******************************************************************************
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*/
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/**
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* Read from MII register
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*
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* @v mii MII interface
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* @v reg Register address
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* @ret value Data read, or negative error
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*/
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static int skeleton_mii_read ( struct mii_interface *mii, unsigned int reg ) {
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struct skeleton_nic *skel =
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container_of ( mii, struct skeleton_nic, mii );
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DBGC ( skel, "SKELETON %p does not yet support MII read\n", skel );
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( void ) reg;
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return -ENOTSUP;
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}
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/**
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* Write to MII register
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*
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* @v mii MII interface
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* @v reg Register address
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* @v data Data to write
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* @ret rc Return status code
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*/
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static int skeleton_mii_write ( struct mii_interface *mii, unsigned int reg,
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unsigned int data) {
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struct skeleton_nic *skel =
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container_of ( mii, struct skeleton_nic, mii );
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DBGC ( skel, "SKELETON %p does not yet support MII write\n", skel );
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( void ) reg;
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( void ) data;
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return -ENOTSUP;
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}
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/** Skeleton MII operations */
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static struct mii_operations skeleton_mii_operations = {
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.read = skeleton_mii_read,
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.write = skeleton_mii_write,
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};
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/******************************************************************************
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*
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* Device reset
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*
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******************************************************************************
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*/
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/**
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* Reset hardware
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*
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* @v skel Skeleton device
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* @ret rc Return status code
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*/
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static int skeleton_reset ( struct skeleton_nic *skel ) {
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DBGC ( skel, "SKELETON %p does not yet support reset\n", skel );
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return -ENOTSUP;
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}
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/******************************************************************************
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*
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* Link state
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*
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******************************************************************************
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*/
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/**
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* Check link state
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*
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* @v netdev Network device
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*/
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static void skeleton_check_link ( struct net_device *netdev ) {
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struct skeleton_nic *skel = netdev->priv;
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DBGC ( skel, "SKELETON %p does not yet support link state\n", skel );
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netdev_link_err ( netdev, -ENOTSUP );
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}
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/******************************************************************************
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*
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* Network device interface
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*
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******************************************************************************
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*/
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/**
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* Open network device
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*
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* @v netdev Network device
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* @ret rc Return status code
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*/
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static int skeleton_open ( struct net_device *netdev ) {
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struct skeleton_nic *skel = netdev->priv;
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DBGC ( skel, "SKELETON %p does not yet support open\n", skel );
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return -ENOTSUP;
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}
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/**
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* Close network device
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*
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* @v netdev Network device
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*/
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static void skeleton_close ( struct net_device *netdev ) {
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struct skeleton_nic *skel = netdev->priv;
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DBGC ( skel, "SKELETON %p does not yet support close\n", skel );
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}
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/**
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* Transmit packet
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*
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* @v netdev Network device
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* @v iobuf I/O buffer
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* @ret rc Return status code
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*/
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static int skeleton_transmit ( struct net_device *netdev,
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struct io_buffer *iobuf ) {
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struct skeleton_nic *skel = netdev->priv;
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DBGC ( skel, "SKELETON %p does not yet support transmit\n", skel );
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( void ) iobuf;
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return -ENOTSUP;
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}
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/**
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* Poll for completed and received packets
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*
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* @v netdev Network device
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*/
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static void skeleton_poll ( struct net_device *netdev ) {
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struct skeleton_nic *skel = netdev->priv;
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/* Not yet implemented */
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( void ) skel;
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}
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/**
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* Enable or disable interrupts
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*
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* @v netdev Network device
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* @v enable Interrupts should be enabled
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*/
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static void skeleton_irq ( struct net_device *netdev, int enable ) {
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struct skeleton_nic *skel = netdev->priv;
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DBGC ( skel, "SKELETON %p does not yet support interrupts\n", skel );
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( void ) enable;
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}
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/** Skeleton network device operations */
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static struct net_device_operations skeleton_operations = {
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.open = skeleton_open,
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.close = skeleton_close,
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.transmit = skeleton_transmit,
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.poll = skeleton_poll,
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.irq = skeleton_irq,
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};
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/******************************************************************************
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*
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* PCI interface
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*
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******************************************************************************
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*/
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/**
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* Probe PCI device
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*
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* @v pci PCI device
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* @ret rc Return status code
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*/
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static int skeleton_probe ( struct pci_device *pci ) {
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struct net_device *netdev;
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struct skeleton_nic *skel;
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int rc;
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/* Allocate and initialise net device */
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netdev = alloc_etherdev ( sizeof ( *skel ) );
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if ( ! netdev ) {
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rc = -ENOMEM;
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goto err_alloc;
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}
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netdev_init ( netdev, &skeleton_operations );
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skel = netdev->priv;
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pci_set_drvdata ( pci, netdev );
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netdev->dev = &pci->dev;
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memset ( skel, 0, sizeof ( *skel ) );
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/* Fix up PCI device */
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adjust_pci_device ( pci );
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/* Map registers */
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skel->regs = ioremap ( pci->membase, SKELETON_BAR_SIZE );
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/* Reset the NIC */
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if ( ( rc = skeleton_reset ( skel ) ) != 0 )
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goto err_reset;
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/* Initialise and reset MII interface */
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mii_init ( &skel->mii, &skeleton_mii_operations );
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if ( ( rc = mii_reset ( &skel->mii ) ) != 0 ) {
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DBGC ( skel, "SKELETON %p could not reset MII: %s\n",
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skel, strerror ( rc ) );
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goto err_mii_reset;
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}
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/* Register network device */
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if ( ( rc = register_netdev ( netdev ) ) != 0 )
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goto err_register_netdev;
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/* Set initial link state */
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skeleton_check_link ( netdev );
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return 0;
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unregister_netdev ( netdev );
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err_register_netdev:
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err_mii_reset:
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skeleton_reset ( skel );
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err_reset:
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netdev_nullify ( netdev );
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netdev_put ( netdev );
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err_alloc:
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return rc;
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}
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/**
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* Remove PCI device
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*
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* @v pci PCI device
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*/
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static void skeleton_remove ( struct pci_device *pci ) {
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struct net_device *netdev = pci_get_drvdata ( pci );
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struct skeleton_nic *skel = netdev->priv;
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/* Unregister network device */
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unregister_netdev ( netdev );
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/* Reset card */
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skeleton_reset ( skel );
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/* Free network device */
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netdev_nullify ( netdev );
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netdev_put ( netdev );
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}
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/** Skeleton PCI device IDs */
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static struct pci_device_id skeleton_nics[] = {
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PCI_ROM ( 0x5ce1, 0x5ce1, "skel", "Skeleton", 0 ),
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};
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/** Skeleton PCI driver */
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struct pci_driver skeleton_driver __pci_driver = {
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.ids = skeleton_nics,
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.id_count = ( sizeof ( skeleton_nics ) / sizeof ( skeleton_nics[0] ) ),
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.probe = skeleton_probe,
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.remove = skeleton_remove,
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};
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23
src/drivers/net/skeleton.h
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23
src/drivers/net/skeleton.h
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@ -0,0 +1,23 @@
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#ifndef _SKELETON_H
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#define _SKELETON_H
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/** @file
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*
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* Skeleton network driver
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*
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*/
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FILE_LICENCE ( GPL2_OR_LATER );
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/** Skeleton BAR size */
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#define SKELETON_BAR_SIZE 256
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/** A skeleton network card */
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struct skeleton_nic {
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/** Registers */
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void *regs;
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/** MII interface */
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struct mii_interface mii;
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};
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#endif /* _SKELETON_H */
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@ -143,6 +143,7 @@ FILE_LICENCE ( GPL2_OR_LATER );
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#define ERRFILE_vmxnet3 ( ERRFILE_DRIVER | 0x00610000 )
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#define ERRFILE_mii ( ERRFILE_DRIVER | 0x00620000 )
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#define ERRFILE_realtek ( ERRFILE_DRIVER | 0x00630000 )
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#define ERRFILE_skeleton ( ERRFILE_DRIVER | 0x00640000 )
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#define ERRFILE_scsi ( ERRFILE_DRIVER | 0x00700000 )
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#define ERRFILE_arbel ( ERRFILE_DRIVER | 0x00710000 )
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