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https://github.com/xcat2/xNBA.git
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natsemi.c is workin
This commit is contained in:
Udayan Kumar
parent
a86b12728a
commit
4f2fab2e14
@ -107,10 +107,12 @@ struct natsemi_nic {
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struct natsemi_rx rx[NUM_RX_DESC];
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/* need to add iobuf as we cannot free iobuf->data in close without this
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* alternatively substracting sizeof(head) and sizeof(list_head) can also
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* give the same.*/
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* give the same.
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*/
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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 from the memory.*/
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/* netdev_tx_complete needs pointer to the iobuf of the data so as to free
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* it from the memory.
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*/
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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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@ -119,10 +121,10 @@ struct natsemi_nic {
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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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It's not useful to define symbolic names for every register bit in the
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device.
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*/
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* Unlike software-only systems, device drivers interact with complex hardware.
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* It's not useful to define symbolic names for every register bit in the
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* device.
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*/
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enum register_offsets {
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ChipCmd = 0x00,
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ChipConfig = 0x04,
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@ -258,25 +260,24 @@ static struct bit_basher_operations nat_basher_ops = {
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.read = nat_spi_read_bit,
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.write = nat_spi_write_bit,
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};
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/** Portion of EEPROM available for non-volatile stored options
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*
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* We use offset 0x40 (i.e. address 0x20), length 0x40. This block is
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* marked as VPD in the rtl8139 datasheets, so we use it only if we
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* detect that the card is not supporting VPD.
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/* It looks that this portion of EEPROM can be used for
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* non-volatile stored options. Data sheet does not talk about this region.
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* Currently it is not working. But with some efforts it can.
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*/
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static struct nvo_fragment nat_nvo_fragments[] = {
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{ 0x0c, 0x40 },
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{ 0x0c, 0x68 },
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{ 0, 0 }
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};
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/**
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/*
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* Set up for EEPROM access
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*
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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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// Initialise three-wire bus
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/* Initialise three-wire bus */
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nat->spibit.basher.op = &nat_basher_ops;
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nat->spibit.bus.mode = SPI_MODE_THREEWIRE;
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nat->spibit.endianness = SPI_BIT_LITTLE_ENDIAN;
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@ -286,11 +287,11 @@ static struct nvo_fragment nat_nvo_fragments[] = {
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init_at93c46 ( &nat->eeprom, 16 );
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nat->eeprom.bus = &nat->spibit.bus;
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nat->nvo.nvs = &nat->eeprom.nvs;
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nat->nvo.fragments = nat_nvo_fragments;
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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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* Reset NIC
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*
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* @v NATSEMI NIC
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@ -305,8 +306,7 @@ static void nat_reset ( struct natsemi_nic *nat ) {
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mdelay ( 10 );
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nat->tx_dirty=0;
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nat->tx_cur=0;
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for(i=0;i<TX_RING_SIZE;i++)
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{
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for(i=0;i<TX_RING_SIZE;i++) {
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nat->tx[i].link=0;
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nat->tx[i].cmdsts=0;
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nat->tx[i].bufptr=0;
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@ -321,7 +321,7 @@ static void nat_reset ( struct natsemi_nic *nat ) {
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outl(SavedClkRun, nat->ioaddr + ClkRun);
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}
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/**
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/*
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* Open NIC
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*
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* @v netdev Net device
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@ -333,50 +333,33 @@ static int nat_open ( struct net_device *netdev ) {
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uint32_t tx_config,rx_config;
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/* Disable PME:
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* The PME bit is initialized from the EEPROM contents.
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* PCI cards probably have PME disabled, but motherboard
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* implementations may have PME set to enable WakeOnLan.
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* With PME set the chip will scan incoming packets but
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* nothing will be written to memory. */
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* The PME bit is initialized from the EEPROM contents.
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* PCI cards probably have PME disabled, but motherboard
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* implementations may have PME set to enable WakeOnLan.
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* With PME set the chip will scan incoming packets but
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* nothing will be written to memory.
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*/
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SavedClkRun = inl(nat->ioaddr + ClkRun);
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outl(SavedClkRun & ~0x100, nat->ioaddr + ClkRun);
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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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/* Setting up Mac address in the NIC */
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for ( i = 0 ; i < ETH_ALEN ; i+=2 ) {
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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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last=(netdev->ll_addr[i+1]>>7);
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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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}
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/*Set up the Tx Ring */
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nat->tx_cur=0;
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nat->tx_dirty=0;
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for (i=0;i<TX_RING_SIZE;i++)
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{
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for (i=0;i<TX_RING_SIZE;i++) {
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nat->tx[i].link = virt_to_bus((i+1 < TX_RING_SIZE) ? &nat->tx[i+1] : &nat->tx[0]);
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nat->tx[i].cmdsts = 0;
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nat->tx[i].bufptr = 0;
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}
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/* Set up RX ring */
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nat->rx_cur=0;
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for (i=0;i<NUM_RX_DESC;i++)
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{
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for (i=0;i<NUM_RX_DESC;i++) {
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nat->iobuf[i] = alloc_iob ( RX_BUF_SIZE );
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if (!nat->iobuf[i])
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@ -386,8 +369,7 @@ static int nat_open ( struct net_device *netdev ) {
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nat->rx[i].bufptr = virt_to_bus(nat->iobuf[i]->data);
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}
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/* load Receive Descriptor Register */
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/* load Receive Descriptor Register */
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outl(virt_to_bus(&nat->rx[0]), nat->ioaddr + RxRingPtr);
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DBG("Natsemi Rx descriptor loaded with: %X\n",(unsigned int)inl(nat->ioaddr+RxRingPtr));
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@ -398,9 +380,10 @@ static int nat_open ( struct net_device *netdev ) {
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/* Enables RX */
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outl(RxFilterEnable|AcceptBroadcast|AcceptAllMulticast|AcceptMyPhys, nat->ioaddr+RxFilterAddr);
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/* Initialize other registers. */
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/* Configure the PCI bus bursts and FIFO thresholds. */
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/* Configure for standard, in-spec Ethernet. */
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/* Initialize other registers.
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* Configure the PCI bus bursts and FIFO thresholds.
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* Configure for standard, in-spec Ethernet.
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*/
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if (inl(nat->ioaddr + ChipConfig) & 0x20000000) { /* Full duplex */
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tx_config = 0xD0801002;
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rx_config = 0x10000020;
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@ -411,17 +394,12 @@ static int nat_open ( struct net_device *netdev ) {
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outl(tx_config, nat->ioaddr + TxConfig);
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outl(rx_config, nat->ioaddr + RxConfig);
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/*start the receiver */
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outl(RxOn, nat->ioaddr + ChipCmd);
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/*enable interrupts*/
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outl((RxOk|RxErr|TxOk|TxErr),nat->ioaddr + IntrMask);
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outl(1,nat->ioaddr +IntrEnable);
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//outl(1,nat->ioaddr +IntrEnable);
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return 0;
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}
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@ -440,13 +418,12 @@ static void nat_close ( struct net_device *netdev ) {
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nat_reset ( nat );
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/* Free RX ring */
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for (i=0;i<NUM_RX_DESC;i++)
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{
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for (i=0;i<NUM_RX_DESC;i++) {
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free_iob( nat->iobuf[i] );
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}
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/* disable interrupts */
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outl(0,nat->ioaddr + IntrMask) ;
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//outl(0,nat->ioaddr + IntrMask) ;
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}
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/**
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@ -459,11 +436,9 @@ static void nat_close ( struct net_device *netdev ) {
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static int nat_transmit ( struct net_device *netdev, struct io_buffer *iobuf ) {
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struct natsemi_nic *nat = netdev->priv;
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/* check for space in TX ring */
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if (nat->tx[nat->tx_cur].cmdsts !=0)
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{
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printf ( "TX overflow\n" );
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/* check for space in TX ring */
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if (nat->tx[nat->tx_cur].cmdsts !=0) {
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DBG( "TX overflow\n" );
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return -ENOBUFS;
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}
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@ -478,9 +453,8 @@ static int nat_transmit ( struct net_device *netdev, struct io_buffer *iobuf ) {
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virt_to_bus ( &iobuf->data ), iob_len ( iobuf ) );
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nat->tx[nat->tx_cur].bufptr = virt_to_bus(iobuf->data);
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nat->tx[nat->tx_cur].cmdsts= (uint32_t) iob_len(iobuf)|OWN;
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nat->tx[nat->tx_cur].cmdsts= iob_len(iobuf)|OWN;
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/* increment the circular buffer pointer to the next buffer location */
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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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@ -513,10 +487,8 @@ static void nat_poll ( struct net_device *netdev, unsigned int rx_quota ) {
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/* check the status of packets given to card for transmission */
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DBG("Intr status %X\n",intr_status);
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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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while(i!=nat->tx_cur) {
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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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@ -525,47 +497,37 @@ static void nat_poll ( struct net_device *netdev, unsigned int rx_quota ) {
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if(status & OWN)
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break;
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/* Check if any errors in transmission */
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if (! (status & DescPktOK))
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{
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printf("Error in sending Packet status:%X\n",
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if (! (status & DescPktOK)) {
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DBG("Error in sending Packet status:%X\n",
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(unsigned int)status);
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netdev_tx_complete_err(netdev,nat->tx_iobuf[nat->tx_dirty],-EINVAL);
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} else {
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DBG("Success in transmitting Packet\n");
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netdev_tx_complete(netdev,nat->tx_iobuf[nat->tx_dirty]);
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}
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else
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{
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DBG("Success in transmitting Packet with data\n");
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// DBG_HD(&nat->tx[nat->tx_dirty].bufptr,130);
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}
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netdev_tx_complete(netdev,nat->tx_iobuf[nat->tx_dirty]);
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/* setting cmdsts zero, indicating that it can be reused */
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nat->tx[nat->tx_dirty].cmdsts=0;
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nat->tx_dirty=(nat->tx_dirty +1) % TX_RING_SIZE;
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i=(i+1) % TX_RING_SIZE;
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}
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rx_status=(unsigned int)nat->rx[nat->rx_cur].cmdsts;
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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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rx_status=(unsigned int)nat->rx[nat->rx_cur].cmdsts;
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while (rx_quota && (rx_status & OWN)) {
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rx_len= (rx_status & DSIZE) - CRC_SIZE;
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/*check for the corrupt packet */
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if((rx_status & (DescMore|DescPktOK|RxTooLong)) != DescPktOK)
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{
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printf("natsemi_poll: Corrupted packet received, "
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if((rx_status & (DescMore|DescPktOK|RxTooLong)) != DescPktOK) {
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DBG("natsemi_poll: Corrupted packet received, "
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"buffer status = %X ^ %X \n",rx_status,
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(unsigned int) nat->rx[nat->rx_cur].cmdsts);
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}
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else
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{
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netdev_rx_err(netdev,NULL,-EINVAL);
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} else {
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rx_iob = alloc_iob(rx_len);
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if(!rx_iob)
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/* leave packet for next call to poll*/
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goto end;
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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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nat->iobuf[nat->rx_cur]->data,rx_len);
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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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@ -573,22 +535,25 @@ static void nat_poll ( struct net_device *netdev, unsigned int 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)nat->rx[nat->rx_cur].cmdsts;
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rx_status=nat->rx[nat->rx_cur].cmdsts;
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}
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end:
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/* re-enable the potentially idle receive state machine */
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/* re-enable the potentially idle receive state machine */
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outl(RxOn, nat->ioaddr + ChipCmd);
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// outl(1,nat->ioaddr +IntrEnable);
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}
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/** RTL8139 net device operations */
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static struct net_device_operations nat_operations = {
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.open = nat_open,
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.close = nat_close,
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.transmit = nat_transmit,
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.poll = nat_poll,
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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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@ -599,89 +564,71 @@ static int nat_probe ( struct pci_device *pci,
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const struct pci_device_id *id __unused ) {
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struct net_device *netdev;
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struct natsemi_nic *nat = NULL;
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int registered_netdev = 0;
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int rc;
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uint32_t advertising;
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/* Fix up PCI device */
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adjust_pci_device ( pci );
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int i;
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uint8_t ll_addr_encoded[MAX_LL_ADDR_LEN];
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uint8_t last=0;
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uint8_t last1=0;
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/* Allocate net device */
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netdev = alloc_etherdev ( sizeof ( *nat ) );
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if ( ! netdev ) {
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rc = -ENOMEM;
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goto err;
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}
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if ( ! netdev )
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return -ENOMEM;
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netdev_init(netdev,&nat_operations);
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nat = netdev->priv;
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pci_set_drvdata ( pci, netdev );
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netdev->dev = &pci->dev;
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memset ( nat, 0, sizeof ( *nat ) );
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nat->ioaddr = pci->ioaddr;
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/* getting the IRQ vector */
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unsigned long vector_phys = IRQ_INT ( pci->irq ) * 4;
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DBG_HDA ( vector_phys, phys_to_virt ( vector_phys ), 4 );
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DBG_HD ( phys_to_virt ( 0xfaea5 ), 64 );
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DBG (" PIC state %X\n", irq_enabled(pci->irq));
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DBG (" IRQ Number %X\n",pci->irq);
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/* Fix up PCI device */
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adjust_pci_device ( pci );
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/* Reset the NIC, set up EEPROM access and read MAC address */
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nat_reset ( nat );
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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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nvs_read ( &nat->eeprom.nvs, 0, eetest,128 );
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nvs_read ( &nat->eeprom.nvs, EE_MAC, ll_addr_encoded, ETH_ALEN );
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/* mdio routine of etherboot-5.4.0 natsemi driver has been removed and
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* statement to read from MII transceiver control section is used directly
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*/
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advertising = inl(nat->ioaddr + 0x80 + (4<<2)) & 0xffff;
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{
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uint32_t chip_config = inl(nat->ioaddr + ChipConfig);
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DBG("%s: Transceiver default autoneg. %s 10 %s %s duplex.\n",
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pci->driver_name,
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chip_config & 0x2000 ? "enabled, advertise" : "disabled, force",
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chip_config & 0x4000 ? "0" : "",
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chip_config & 0x8000 ? "full" : "half");
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}
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DBG("%s: Transceiver status %hX advertising %hX\n",pci->driver_name, (int)inl(nat->ioaddr + 0x84),(unsigned int) advertising);
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/* decoding the MAC address read from NVS
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* and save it in netdev->ll_addr
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*/
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for ( i = 0 ; i < ETH_ALEN ; i+=2 ) {
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last1=ll_addr_encoded[i]>>7;
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netdev->ll_addr[i]=ll_addr_encoded[i]<<1|last;
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last=(ll_addr_encoded[i+1]>>7);
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netdev->ll_addr[i+1]=(ll_addr_encoded[i+1]<<1)+last1;
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}
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/* TODO remove the block below */
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DBG("Contents of the EEPROM\n");
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uint8_t eetest[108];
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nvs_read(&nat->eeprom.nvs,0,eetest,108);
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DBG_HD(&eetest,108);
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/* Point to NIC specific routines */
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/*
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netdev->open = nat_open;
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netdev->close = nat_close;
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netdev->transmit = nat_transmit;
|
||||
netdev->poll = nat_poll;
|
||||
|
||||
*/
|
||||
/* Register network device */
|
||||
if ( ( rc = register_netdev ( netdev ) ) != 0 )
|
||||
goto err;
|
||||
registered_netdev = 1;
|
||||
goto err_register_netdev;
|
||||
|
||||
/* Register non-volatile storagei
|
||||
* uncomment lines below in final version*/
|
||||
|
||||
if ( nat->nvo.nvs ) {
|
||||
/* Register non-volatile storage */
|
||||
if ( nat->nvo.nvs ) {
|
||||
if ( ( rc = nvo_register ( &nat->nvo ) ) != 0 )
|
||||
goto err;
|
||||
goto err_register_nvo;
|
||||
}
|
||||
|
||||
|
||||
return 0;
|
||||
|
||||
err:
|
||||
err_register_nvo:
|
||||
unregister_netdev ( netdev );
|
||||
err_register_netdev:
|
||||
/* Disable NIC */
|
||||
if ( nat )
|
||||
nat_reset ( nat );
|
||||
if ( registered_netdev )
|
||||
unregister_netdev ( netdev );
|
||||
nat_reset ( nat );
|
||||
/* Free net device */
|
||||
netdev_put ( netdev );
|
||||
return rc;
|
||||
|
||||
Loading…
Reference in New Issue
Block a user