diff options
Diffstat (limited to 'gpxe/src/drivers/net/pnic.c')
| -rw-r--r-- | gpxe/src/drivers/net/pnic.c | 281 |
1 files changed, 0 insertions, 281 deletions
diff --git a/gpxe/src/drivers/net/pnic.c b/gpxe/src/drivers/net/pnic.c deleted file mode 100644 index cbc67906..00000000 --- a/gpxe/src/drivers/net/pnic.c +++ /dev/null @@ -1,281 +0,0 @@ -/************************************************************************** -Etherboot - BOOTP/TFTP Bootstrap Program -Bochs Pseudo NIC driver for Etherboot -***************************************************************************/ - -/* - * 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, or (at - * your option) any later version. - * - * See pnic_api.h for an explanation of the Bochs Pseudo NIC. - */ - -FILE_LICENCE ( GPL2_OR_LATER ); - -#include <stdint.h> -#include <stdio.h> -#include <gpxe/io.h> -#include <errno.h> -#include <gpxe/pci.h> -#include <gpxe/if_ether.h> -#include <gpxe/ethernet.h> -#include <gpxe/iobuf.h> -#include <gpxe/netdevice.h> - -#include "pnic_api.h" - -struct pnic { - unsigned short ioaddr; -}; - -/* - * Utility functions: issue a PNIC command, retrieve result. Use - * pnic_command_quiet if you don't want failure codes to be - * automatically printed. Returns the PNIC status code. - * - * Set output_length to NULL only if you expect to receive exactly - * output_max_length bytes, otherwise it'll complain that you didn't - * get enough data (on the assumption that if you not interested in - * discovering the output length then you're expecting a fixed amount - * of data). - */ - -static uint16_t pnic_command_quiet ( struct pnic *pnic, uint16_t command, - const void *input, uint16_t input_length, - void *output, uint16_t output_max_length, - uint16_t *output_length ) { - uint16_t status; - uint16_t _output_length; - - if ( input != NULL ) { - /* Write input length */ - outw ( input_length, pnic->ioaddr + PNIC_REG_LEN ); - /* Write input data */ - outsb ( pnic->ioaddr + PNIC_REG_DATA, input, input_length ); - } - /* Write command */ - outw ( command, pnic->ioaddr + PNIC_REG_CMD ); - /* Retrieve status */ - status = inw ( pnic->ioaddr + PNIC_REG_STAT ); - /* Retrieve output length */ - _output_length = inw ( pnic->ioaddr + PNIC_REG_LEN ); - if ( output_length == NULL ) { - if ( _output_length != output_max_length ) { - printf ( "pnic_command %#hx: wrong data length " - "returned (expected %d, got %d)\n", command, - output_max_length, _output_length ); - } - } else { - *output_length = _output_length; - } - if ( output != NULL ) { - if ( _output_length > output_max_length ) { - printf ( "pnic_command %#hx: output buffer too small " - "(have %d, need %d)\n", command, - output_max_length, _output_length ); - _output_length = output_max_length; - } - /* Retrieve output data */ - insb ( pnic->ioaddr + PNIC_REG_DATA, output, _output_length ); - } - return status; -} - -static uint16_t pnic_command ( struct pnic *pnic, uint16_t command, - const void *input, uint16_t input_length, - void *output, uint16_t output_max_length, - uint16_t *output_length ) { - uint16_t status = pnic_command_quiet ( pnic, command, - input, input_length, - output, output_max_length, - output_length ); - if ( status == PNIC_STATUS_OK ) return status; - printf ( "PNIC command %#hx (len %#hx) failed with status %#hx\n", - command, input_length, status ); - return status; -} - -/* Check API version matches that of NIC */ -static int pnic_api_check ( uint16_t api_version ) { - if ( api_version != PNIC_API_VERSION ) { - printf ( "Warning: API version mismatch! " - "(NIC's is %d.%d, ours is %d.%d)\n", - api_version >> 8, api_version & 0xff, - PNIC_API_VERSION >> 8, PNIC_API_VERSION & 0xff ); - } - if ( api_version < PNIC_API_VERSION ) { - printf ( "** You may need to update your copy of Bochs **\n" ); - } - return ( api_version == PNIC_API_VERSION ); -} - -/************************************************************************** -POLL - Wait for a frame -***************************************************************************/ -static void pnic_poll ( struct net_device *netdev ) { - struct pnic *pnic = netdev->priv; - struct io_buffer *iobuf; - uint16_t length; - uint16_t qlen; - - /* Fetch all available packets */ - while ( 1 ) { - if ( pnic_command ( pnic, PNIC_CMD_RECV_QLEN, NULL, 0, - &qlen, sizeof ( qlen ), NULL ) - != PNIC_STATUS_OK ) - return; - if ( qlen == 0 ) - return; - iobuf = alloc_iob ( ETH_FRAME_LEN ); - if ( ! iobuf ) { - DBG ( "could not allocate buffer\n" ); - netdev_rx_err ( netdev, NULL, -ENOMEM ); - return; - } - if ( pnic_command ( pnic, PNIC_CMD_RECV, NULL, 0, - iobuf->data, ETH_FRAME_LEN, &length ) - != PNIC_STATUS_OK ) { - netdev_rx_err ( netdev, iobuf, -EIO ); - return; - } - iob_put ( iobuf, length ); - netdev_rx ( netdev, iobuf ); - } -} - -/************************************************************************** -TRANSMIT - Transmit a frame -***************************************************************************/ -static int pnic_transmit ( struct net_device *netdev, struct io_buffer *iobuf ) { - struct pnic *pnic = netdev->priv; - - /* Pad the packet */ - iob_pad ( iobuf, ETH_ZLEN ); - - /* Send packet */ - pnic_command ( pnic, PNIC_CMD_XMIT, iobuf->data, iob_len ( iobuf ), - NULL, 0, NULL ); - - netdev_tx_complete ( netdev, iobuf ); - return 0; -} - -/************************************************************************** -OPEN - Open network device -***************************************************************************/ -static int pnic_open ( struct net_device *netdev __unused ) { - /* Nothing to do */ - return 0; -} - -/************************************************************************** -CLOSE - Close network device -***************************************************************************/ -static void pnic_close ( struct net_device *netdev __unused ) { - /* Nothing to do */ -} - -/************************************************************************** -IRQ - Enable/disable interrupts -***************************************************************************/ -static void pnic_irq ( struct net_device *netdev, int enable ) { - struct pnic *pnic = netdev->priv; - uint8_t mask = ( enable ? 1 : 0 ); - - pnic_command ( pnic, PNIC_CMD_MASK_IRQ, &mask, sizeof ( mask ), - NULL, 0, NULL ); -} - -/************************************************************************** -OPERATIONS TABLE -***************************************************************************/ -static struct net_device_operations pnic_operations = { - .open = pnic_open, - .close = pnic_close, - .transmit = pnic_transmit, - .poll = pnic_poll, - .irq = pnic_irq, -}; - -/************************************************************************** -DISABLE - Turn off ethernet interface -***************************************************************************/ -static void pnic_remove ( struct pci_device *pci ) { - struct net_device *netdev = pci_get_drvdata ( pci ); - struct pnic *pnic = netdev->priv; - - unregister_netdev ( netdev ); - pnic_command ( pnic, PNIC_CMD_RESET, NULL, 0, NULL, 0, NULL ); - netdev_nullify ( netdev ); - netdev_put ( netdev ); -} - -/************************************************************************** -PROBE - Look for an adapter, this routine's visible to the outside -***************************************************************************/ -static int pnic_probe ( struct pci_device *pci, - const struct pci_device_id *id __unused ) { - struct net_device *netdev; - struct pnic *pnic; - uint16_t api_version; - uint16_t status; - int rc; - - /* Allocate net device */ - netdev = alloc_etherdev ( sizeof ( *pnic ) ); - if ( ! netdev ) - return -ENOMEM; - netdev_init ( netdev, &pnic_operations ); - pnic = netdev->priv; - pci_set_drvdata ( pci, netdev ); - netdev->dev = &pci->dev; - pnic->ioaddr = pci->ioaddr; - - /* Fix up PCI device */ - adjust_pci_device ( pci ); - - /* API version check */ - status = pnic_command_quiet ( pnic, PNIC_CMD_API_VER, NULL, 0, - &api_version, - sizeof ( api_version ), NULL ); - if ( status != PNIC_STATUS_OK ) { - printf ( "PNIC failed installation check, code %#hx\n", - status ); - rc = -EIO; - goto err; - } - pnic_api_check ( api_version ); - - /* Get MAC address */ - status = pnic_command ( pnic, PNIC_CMD_READ_MAC, NULL, 0, - netdev->hw_addr, ETH_ALEN, NULL ); - - /* Mark as link up; PNIC has no concept of link state */ - netdev_link_up ( netdev ); - - /* Register network device */ - if ( ( rc = register_netdev ( netdev ) ) != 0 ) - goto err; - - return 0; - - err: - /* Free net device */ - netdev_nullify ( netdev ); - netdev_put ( netdev ); - return rc; -} - -static struct pci_device_id pnic_nics[] = { -/* genrules.pl doesn't let us use macros for PCI IDs...*/ -PCI_ROM ( 0xfefe, 0xefef, "pnic", "Bochs Pseudo NIC Adaptor", 0 ), -}; - -struct pci_driver pnic_driver __pci_driver = { - .ids = pnic_nics, - .id_count = ( sizeof ( pnic_nics ) / sizeof ( pnic_nics[0] ) ), - .probe = pnic_probe, - .remove = pnic_remove, -}; |