added change log to natsemi.c
This commit is contained in:
Udayan Kumar
parent
6d4dafdc6e
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9ad59b60c5
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@ -1,8 +1,67 @@
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/* natsemi.c - gPXE driver for the NatSemi DP8381x series.
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/* natsemi.c - gPXE driver for the NatSemi DP8381x series. */
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/*
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natsemi.c: An Etherboot driver for the NatSemi DP8381x series.
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Copyright (C) 2001 Entity Cyber, Inc.
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This development of this Etherboot driver was funded by
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Sicom Systems: http://www.sicompos.com/
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Author: Marty Connor (mdc@thinguin.org)
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Adapted from a Linux driver which was written by Donald Becker
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This software may be used and distributed according to the terms
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of the GNU Public License (GPL), incorporated herein by reference.
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Original Copyright Notice:
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Written/copyright 1999-2001 by Donald Becker.
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This software may be used and distributed according to the terms of
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the GNU General Public License (GPL), incorporated herein by reference.
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Drivers based on or derived from this code fall under the GPL and must
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retain the authorship, copyright and license notice. This file is not
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a complete program and may only be used when the entire operating
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system is licensed under the GPL. License for under other terms may be
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available. Contact the original author for details.
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The original author may be reached as becker@scyld.com, or at
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Scyld Computing Corporation
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410 Severn Ave., Suite 210
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Annapolis MD 21403
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Support information and updates available at
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http://www.scyld.com/network/netsemi.html
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References:
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http://www.scyld.com/expert/100mbps.html
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http://www.scyld.com/expert/NWay.html
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Datasheet is available from:
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http://www.national.com/pf/DP/DP83815.html
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*/
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/* Revision History */
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/*
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02 JUL 2007 Udayan Kumar 1.2 ported the driver from etherboot to gPXE API
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Added a circular buffer for transmit and receive.
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transmit routine will not wait for transmission to finish
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poll routine deals with it.
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13 Dec 2003 timlegge 1.1 Enabled Multicast Support
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29 May 2001 mdc 1.0
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Initial Release. Tested with Netgear FA311 and FA312 boards
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*/
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#include <stdint.h>
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#include <stdlib.h>
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#include <stdio.h>
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@ -21,6 +80,10 @@
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#define TX_RING_SIZE 4
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#define NUM_RX_DESC 4
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#define RX_BUF_SIZE 1536
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#define OWN 0x80000000
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#define DSIZE 0x00000FFF
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#define CRC_SIZE 4
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struct natsemi_tx {
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uint32_t link;
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@ -46,26 +109,13 @@ struct natsemi_nic {
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* give the same.*/
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struct io_buffer *iobuf[NUM_RX_DESC];
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/*netdev_tx_complete needs pointer to the iobuf of the data so as to free
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it form the memory.*/
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it from the memory.*/
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struct io_buffer *tx_iobuf[TX_RING_SIZE];
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struct spi_bit_basher spibit;
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struct spi_device eeprom;
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struct nvo_block nvo;
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};
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/* Tuning Parameters */
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#define TX_FIFO_THRESH 256 /* In bytes, rounded down to 32 byte units. */
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#define RX_FIFO_THRESH 4 /* Rx buffer level before first PCI xfer. */
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#define RX_DMA_BURST 4 /* Maximum PCI burst, '4' is 256 bytes */
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#define TX_DMA_BURST 4 /* Calculate as 16<<val. */
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#define TX_IPG 3 /* This is the only valid value */
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//#define RX_BUF_LEN_IDX 0 /* */
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#define RX_BUF_LEN 8192 /*buffer size should be multiple of 32 */
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#define RX_BUF_PAD 4
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#define RX_BUF_SIZE 1536
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#define OWN 0x80000000
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#define DSIZE 0x00000FFF
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#define CRC_SIZE 4
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/* NATSEMI: Offsets to the device registers.
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Unlike software-only systems, device drivers interact with complex hardware.
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@ -153,8 +203,6 @@ enum desc_status_bits {
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/* EEPROM access , values are devices specific*/
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//#define EE_M1 0x80 /* Mode select bit 1 */
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//#define EE_M0 0x40 /* Mode select bit 0 */
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#define EE_CS 0x08 /* EEPROM chip select */
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#define EE_SK 0x04 /* EEPROM shift clock */
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#define EE_DI 0x01 /* Data in */
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@ -208,7 +256,7 @@ static struct bit_basher_operations nat_basher_ops = {
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* detect that the card is not supporting VPD.
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*/
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static struct nvo_fragment nat_nvo_fragments[] = {
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{ 0x0f, 0x40 },
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{ 0x0c, 0x40 },
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{ 0, 0 }
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};
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@ -218,8 +266,6 @@ static struct nvo_fragment nat_nvo_fragments[] = {
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* @v NAT NATSEMI NIC
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*/
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void nat_init_eeprom ( struct natsemi_nic *nat ) {
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int ee9356;
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int vpd;
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// Initialise three-wire bus
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nat->spibit.basher.op = &nat_basher_ops;
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@ -227,18 +273,12 @@ static struct nvo_fragment nat_nvo_fragments[] = {
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nat->spibit.endianness = SPI_BIT_LITTLE_ENDIAN;
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init_spi_bit_basher ( &nat->spibit );
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DBG ( "EEPROM is an AT93C46\n" );
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/*natsemi DP 83815 only supports at93c46 */
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init_at93c46 ( &nat->eeprom, 16 );
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nat->eeprom.bus = &nat->spibit.bus;
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// Initialise space for non-volatile options, if available
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//vpd = ( inw ( rtl->ioaddr + Config1 ) & VPDEnable );
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//if ( vpd ) {
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// DBG ( "EEPROM in use for VPD; cannot use for options\n" );
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//} else {
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nat->nvo.nvs = &nat->eeprom.nvs;
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nat->nvo.fragments = nat_nvo_fragments;
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// }
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}
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/**
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@ -280,7 +320,6 @@ static void nat_reset ( struct natsemi_nic *nat ) {
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*/
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static int nat_open ( struct net_device *netdev ) {
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struct natsemi_nic *nat = netdev->priv;
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//struct io_buffer *iobuf;
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int i;
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uint32_t tx_config,rx_config;
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@ -296,13 +335,10 @@ static int nat_open ( struct net_device *netdev ) {
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/* Program the MAC address TODO enable this comment */
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uint8_t last=0;
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uint8_t last1=0;
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for ( i = 0 ; i < ETH_ALEN ; i+=2 )
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{
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// DBG("MAC address %d octet :%X %X\n",i,netdev->ll_addr[i],netdev->ll_addr[i+1]);
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// DBG("LAst = %d last1 = %d\n",last,last1);
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outl(i,nat->ioaddr+RxFilterAddr);
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last1=netdev->ll_addr[i]>>7;
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netdev->ll_addr[i]=netdev->ll_addr[i]<<1|last;
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@ -310,9 +346,6 @@ static int nat_open ( struct net_device *netdev ) {
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netdev->ll_addr[i+1]=(netdev->ll_addr[i+1]<<1)+last1;
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outw ( netdev->ll_addr[i] + (netdev->ll_addr[i+1]<<8), nat->ioaddr +RxFilterData);
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//outw ( (fullbyte>>8)+(fullbyte<<8), nat->ioaddr +RxFilterData);
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// DBG("MAC address %d octet :%X %X\n",i,netdev->ll_addr[i],netdev->ll_addr[i+1]);
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// DBG("LAst = %d last1 = %d\n",last,last1);
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}
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@ -417,7 +450,6 @@ static int nat_transmit ( struct net_device *netdev, struct io_buffer *iobuf ) {
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return -ENOBUFS;
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}
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//DBG_HD(iobuf->data,iob_len(iobuf));
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/* to be used in netdev_tx_complete*/
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nat->tx_iobuf[nat->tx_cur]=iobuf;
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@ -432,7 +464,6 @@ static int nat_transmit ( struct net_device *netdev, struct io_buffer *iobuf ) {
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nat->tx[nat->tx_cur].cmdsts= (uint32_t) iob_len(iobuf)|OWN;
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//DBG_HD(bus_to_virt(nat->tx[nat->tx_cur].bufptr), iob_len(iobuf) );
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nat->tx_cur=(nat->tx_cur+1) % TX_RING_SIZE;
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/*start the transmitter */
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@ -459,7 +490,6 @@ static void nat_poll ( struct net_device *netdev, unsigned int rx_quota ) {
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i=nat->tx_dirty;
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while(i!=nat->tx_cur)
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{
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//status=(uint32_t)bus_to_virt(nat->tx[nat->tx_dirty].cmdsts);
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status=nat->tx[nat->tx_dirty].cmdsts;
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DBG("value of tx_dirty = %d tx_cur=%d status=%X\n",
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nat->tx_dirty,nat->tx_cur,status);
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@ -487,9 +517,7 @@ static void nat_poll ( struct net_device *netdev, unsigned int rx_quota ) {
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}
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//rx_status=(unsigned int)bus_to_virt(nat->rx[nat->rx_cur].cmdsts);
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rx_status=(unsigned int)nat->rx[nat->rx_cur].cmdsts;
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//DBG ("Receiver Status = %x\n",rx_status);
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/* Handle received packets */
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while (rx_quota && (rx_status & OWN))
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{
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@ -510,16 +538,14 @@ static void nat_poll ( struct net_device *netdev, unsigned int rx_quota ) {
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return;
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memcpy(iob_put(rx_iob,rx_len),
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bus_to_virt(nat->rx[nat->rx_cur].bufptr),rx_len);
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//DBG_HD(bus_to_virt(nat->rx[nat->rx_cur].bufptr),rx_len);
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DBG("received packet");
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DBG("received packet\n");
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/* add to the receive queue. */
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netdev_rx(netdev,rx_iob);
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rx_quota--;
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}
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nat->rx[nat->rx_cur].cmdsts = RX_BUF_SIZE;
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nat->rx_cur=(nat->rx_cur+1) % NUM_RX_DESC;
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//rx_status=(unsigned int)bus_to_virt(nat->rx[nat->rx_cur].cmdsts);
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rx_status=(unsigned int)nat->rx[nat->rx_cur].cmdsts;
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}
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@ -568,9 +594,7 @@ static int nat_probe ( struct pci_device *pci,
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nat_init_eeprom ( nat );
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nvs_read ( &nat->eeprom.nvs, EE_MAC, netdev->ll_addr, ETH_ALEN );
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uint8_t eetest[128];
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int i;
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nvs_read ( &nat->eeprom.nvs, 0, eetest,128 );
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// DBG_HD(&eetest,128);
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/* mdio routine of etherboot-5.4.0 natsemi driver has been removed and
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@ -633,10 +657,10 @@ static int nat_probe ( struct pci_device *pci,
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static void nat_remove ( struct pci_device *pci ) {
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struct net_device *netdev = pci_get_drvdata ( pci );
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struct natsemi_nic *nat = netdev->priv;
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/* TODO
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if ( rtl->nvo.nvs )
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nvo_unregister ( &rtl->nvo );
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*/
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if ( nat->nvo.nvs )
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nvo_unregister ( &nat->nvo );
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unregister_netdev ( netdev );
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nat_reset ( nat );
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netdev_put ( netdev );
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