diff options
Diffstat (limited to 'gpxe/src/drivers/net/natsemi.c')
| -rw-r--r-- | gpxe/src/drivers/net/natsemi.c | 609 |
1 files changed, 0 insertions, 609 deletions
diff --git a/gpxe/src/drivers/net/natsemi.c b/gpxe/src/drivers/net/natsemi.c deleted file mode 100644 index db3f3209..00000000 --- a/gpxe/src/drivers/net/natsemi.c +++ /dev/null @@ -1,609 +0,0 @@ -/* - natsemi.c - gPXE driver for the NatSemi DP8381x series. - - Based on: - - natsemi.c: An Etherboot driver for the NatSemi DP8381x series. - - Copyright (C) 2001 Entity Cyber, Inc. - - This development of this Etherboot driver was funded by - - Sicom Systems: http://www.sicompos.com/ - - Author: Marty Connor <mdc@etherboot.org> - Adapted from a Linux driver which was written by Donald Becker - - This software may be used and distributed according to the terms - of the GNU Public License (GPL), incorporated herein by reference. - - Original Copyright Notice: - - Written/copyright 1999-2001 by Donald Becker. - - This software may be used and distributed according to the terms of - the GNU General Public License (GPL), incorporated herein by reference. - Drivers based on or derived from this code fall under the GPL and must - retain the authorship, copyright and license notice. This file is not - a complete program and may only be used when the entire operating - system is licensed under the GPL. License for under other terms may be - available. Contact the original author for details. - - The original author may be reached as becker@scyld.com, or at - Scyld Computing Corporation - 410 Severn Ave., Suite 210 - Annapolis MD 21403 - - Support information and updates available at - http://www.scyld.com/network/netsemi.html - - References: - - http://www.scyld.com/expert/100mbps.html - http://www.scyld.com/expert/NWay.html - Datasheet is available from: - http://www.national.com/pf/DP/DP83815.html - -*/ - -FILE_LICENCE ( GPL_ANY ); - -/* Revision History */ - -/* - 02 Jul 2007 Udayan Kumar 1.2 ported the driver from etherboot to gPXE API. - Fully rewritten,adapting the old driver. - Added a circular buffer for transmit and receive. - transmit routine will not wait for transmission to finish. - poll routine deals with it. - 13 Dec 2003 Tim Legge 1.1 Enabled Multicast Support - 29 May 2001 Marty Connor 1.0 Initial Release. Tested with Netgear FA311 and FA312 boards -*/ - -#include <stdint.h> -#include <stdlib.h> -#include <stdio.h> -#include <string.h> -#include <gpxe/io.h> -#include <errno.h> -#include <byteswap.h> -#include <unistd.h> -#include <gpxe/pci.h> -#include <gpxe/if_ether.h> -#include <gpxe/ethernet.h> -#include <gpxe/iobuf.h> -#include <gpxe/netdevice.h> -#include <gpxe/spi_bit.h> -#include <gpxe/threewire.h> -#include <gpxe/nvo.h> -#include "natsemi.h" - -/* Function Prototypes: */ - -static int natsemi_spi_read_bit ( struct bit_basher *, unsigned int ); -static void natsemi_spi_write_bit ( struct bit_basher *,unsigned int, unsigned long ); -static void natsemi_init_eeprom ( struct natsemi_private * ); -static int natsemi_probe (struct pci_device *pci, const struct pci_device_id *id); -static void natsemi_reset (struct net_device *netdev); -static int natsemi_open (struct net_device *netdev); -static int natsemi_transmit (struct net_device *netdev, struct io_buffer *iobuf); -static void natsemi_poll (struct net_device *netdev); -static void natsemi_close (struct net_device *netdev); -static void natsemi_irq (struct net_device *netdev, int enable); -static void natsemi_remove (struct pci_device *pci); - -/** natsemi net device operations */ -static struct net_device_operations natsemi_operations = { - .open = natsemi_open, - .close = natsemi_close, - .transmit = natsemi_transmit, - .poll = natsemi_poll, - .irq = natsemi_irq, -}; - -static int natsemi_spi_read_bit ( struct bit_basher *basher, - unsigned int bit_id ) { - struct natsemi_private *np = container_of ( basher, struct natsemi_private, - spibit.basher ); - uint8_t mask = natsemi_ee_bits[bit_id]; - uint8_t eereg; - - eereg = inb ( np->ioaddr + EE_REG ); - return ( eereg & mask ); -} - -static void natsemi_spi_write_bit ( struct bit_basher *basher, - unsigned int bit_id, unsigned long data ) { - struct natsemi_private *np = container_of ( basher, struct natsemi_private, - spibit.basher ); - uint8_t mask = natsemi_ee_bits[bit_id]; - uint8_t eereg; - - eereg = inb ( np->ioaddr + EE_REG ); - eereg &= ~mask; - eereg |= ( data & mask ); - outb ( eereg, np->ioaddr + EE_REG ); -} - -static struct bit_basher_operations natsemi_basher_ops = { - .read = natsemi_spi_read_bit, - .write = natsemi_spi_write_bit, -}; - -/* It looks that this portion of EEPROM can be used for - * non-volatile stored options. Data sheet does not talk about this region. - * Currently it is not working. But with some efforts it can. - */ -static struct nvo_fragment natsemi_nvo_fragments[] = { - { 0x0c, 0x68 }, - { 0, 0 } -}; - -/* - * Set up for EEPROM access - * - * @v NAT NATSEMI NIC - */ -static void natsemi_init_eeprom ( struct natsemi_private *np ) { - - /* Initialise three-wire bus - */ - np->spibit.basher.op = &natsemi_basher_ops; - np->spibit.bus.mode = SPI_MODE_THREEWIRE; - np->spibit.endianness = SPI_BIT_LITTLE_ENDIAN; - init_spi_bit_basher ( &np->spibit ); - - /*natsemi DP 83815 only supports at93c46 - */ - init_at93c46 ( &np->eeprom, 16 ); - np->eeprom.bus = &np->spibit.bus; - np->nvo.nvs = &np->eeprom.nvs; - np->nvo.fragments = natsemi_nvo_fragments; -} - -/** - * Probe PCI device - * - * @v pci PCI device - * @v id PCI ID - * @ret rc Return status code - */ -static int natsemi_probe (struct pci_device *pci, - const struct pci_device_id *id __unused) { - struct net_device *netdev; - struct natsemi_private *np = NULL; - uint8_t ll_addr_encoded[MAX_LL_ADDR_LEN]; - uint8_t last=0,last1=0; - uint8_t prev_bytes[2]; - int i; - int rc; - - /* Allocate net device - */ - netdev = alloc_etherdev (sizeof (*np)); - if (! netdev) - return -ENOMEM; - - netdev_init (netdev, &natsemi_operations); - np = netdev->priv; - pci_set_drvdata (pci, netdev); - netdev->dev = &pci->dev; - memset (np, 0, sizeof (*np)); - np->ioaddr = pci->ioaddr; - - adjust_pci_device (pci); - - natsemi_reset (netdev); - natsemi_init_eeprom ( np ); - nvs_read ( &np->eeprom.nvs, EE_MAC-1, prev_bytes, 1 ); - nvs_read ( &np->eeprom.nvs, EE_MAC, ll_addr_encoded, ETH_ALEN ); - - /* decoding the MAC address read from NVS - * and save it in netdev->ll_addr - */ - last = prev_bytes[1] >> 7; - for ( i = 0 ; i < ETH_ALEN ; i++ ) { - last1 = ll_addr_encoded[i] >> 7; - netdev->hw_addr[i] = ll_addr_encoded[i] << 1 | last; - last = last1; - } - - /* Mark as link up; we don't yet handle link state */ - netdev_link_up ( netdev ); - - if ((rc = register_netdev (netdev)) != 0) - goto err_register_netdev; - - return 0; - -err_register_netdev: - - natsemi_reset (netdev); - netdev_put (netdev); - return rc; -} - -/** - * Remove PCI device - * - * @v pci PCI device - */ -static void natsemi_remove (struct pci_device *pci) { - struct net_device *netdev = pci_get_drvdata (pci); - - unregister_netdev (netdev); - natsemi_reset (netdev); - netdev_nullify ( netdev ); - netdev_put (netdev); -} - -/** - * Reset NIC - * - * @v NATSEMI NIC - * - * Issues a hardware reset and waits for the reset to complete. - */ -static void natsemi_reset (struct net_device *netdev) -{ - struct natsemi_private *np = netdev->priv; - int i; - u32 cfg; - u32 wcsr; - u32 rfcr; - u16 pmatch[3]; - u16 sopass[3]; - - natsemi_irq (netdev, 0); - - /* - * Resetting the chip causes some registers to be lost. - * Natsemi suggests NOT reloading the EEPROM while live, so instead - * we save the state that would have been loaded from EEPROM - * on a normal power-up (see the spec EEPROM map). - */ - - /* CFG */ - cfg = inl (np->ioaddr + ChipConfig) & CFG_RESET_SAVE; - - /* WCSR */ - wcsr = inl (np->ioaddr + WOLCmd) & WCSR_RESET_SAVE; - - /* RFCR */ - rfcr = inl (np->ioaddr + RxFilterAddr) & RFCR_RESET_SAVE; - - /* PMATCH */ - for (i = 0; i < 3; i++) { - outl(i*2, np->ioaddr + RxFilterAddr); - pmatch[i] = inw(np->ioaddr + RxFilterData); - } - - /* SOPAS */ - for (i = 0; i < 3; i++) { - outl(0xa+(i*2), np->ioaddr + RxFilterAddr); - sopass[i] = inw(np->ioaddr + RxFilterData); - } - - /* now whack the chip */ - outl(ChipReset, np->ioaddr + ChipCmd); - for (i=0; i<NATSEMI_HW_TIMEOUT; i++) { - if (! (inl (np->ioaddr + ChipCmd) & ChipReset)) - break; - udelay(5); - } - if (i == NATSEMI_HW_TIMEOUT) { - DBG ("natsemi_reset: reset did not complete in %d usec.\n", i*5); - } - - /* restore CFG */ - cfg |= inl(np->ioaddr + ChipConfig) & ~CFG_RESET_SAVE; - cfg &= ~(CfgExtPhy | CfgPhyDis); - outl (cfg, np->ioaddr + ChipConfig); - - /* restore WCSR */ - wcsr |= inl (np->ioaddr + WOLCmd) & ~WCSR_RESET_SAVE; - outl (wcsr, np->ioaddr + WOLCmd); - - /* read RFCR */ - rfcr |= inl (np->ioaddr + RxFilterAddr) & ~RFCR_RESET_SAVE; - - /* restore PMATCH */ - for (i = 0; i < 3; i++) { - outl (i*2, np->ioaddr + RxFilterAddr); - outw (pmatch[i], np->ioaddr + RxFilterData); - } - for (i = 0; i < 3; i++) { - outl (0xa+(i*2), np->ioaddr + RxFilterAddr); - outw (sopass[i], np->ioaddr + RxFilterData); - } - /* restore RFCR */ - outl (rfcr, np->ioaddr + RxFilterAddr); -} - -/** - * Open NIC - * - * @v netdev Net device - * @ret rc Return status code - */ -static int natsemi_open (struct net_device *netdev) -{ - struct natsemi_private *np = netdev->priv; - uint32_t tx_config, rx_config; - int i; - - /* Disable PME: - * The PME bit is initialized from the EEPROM contents. - * PCI cards probably have PME disabled, but motherboard - * implementations may have PME set to enable WakeOnLan. - * With PME set the chip will scan incoming packets but - * nothing will be written to memory. - */ - outl (inl (np->ioaddr + ClkRun) & ~0x100, np->ioaddr + ClkRun); - - /* Set MAC address in NIC - */ - for (i = 0 ; i < ETH_ALEN ; i+=2) { - outl (i, np->ioaddr + RxFilterAddr); - outw (netdev->ll_addr[i] + (netdev->ll_addr[i + 1] << 8), - np->ioaddr + RxFilterData); - } - - /* Setup Tx Ring - */ - np->tx_cur = 0; - np->tx_dirty = 0; - for (i = 0 ; i < TX_RING_SIZE ; i++) { - np->tx[i].link = virt_to_bus ((i + 1 < TX_RING_SIZE) ? &np->tx[i + 1] : &np->tx[0]); - np->tx[i].cmdsts = 0; - np->tx[i].bufptr = 0; - } - outl (virt_to_bus (&np->tx[0]),np->ioaddr + TxRingPtr); - - DBG ("Natsemi Tx descriptor loaded with: %#08x\n", - inl (np->ioaddr + TxRingPtr)); - - /* Setup RX ring - */ - np->rx_cur = 0; - for (i = 0 ; i < NUM_RX_DESC ; i++) { - np->iobuf[i] = alloc_iob (RX_BUF_SIZE); - if (! np->iobuf[i]) - goto memory_alloc_err; - np->rx[i].link = virt_to_bus ((i + 1 < NUM_RX_DESC) - ? &np->rx[i + 1] : &np->rx[0]); - np->rx[i].cmdsts = RX_BUF_SIZE; - np->rx[i].bufptr = virt_to_bus (np->iobuf[i]->data); - DBG (" Address of iobuf [%d] = %p and iobuf->data = %p \n", i, - &np->iobuf[i], &np->iobuf[i]->data); - } - outl (virt_to_bus (&np->rx[0]), np->ioaddr + RxRingPtr); - - DBG ("Natsemi Rx descriptor loaded with: %#08x\n", - inl (np->ioaddr + RxRingPtr)); - - /* Setup RX Filter - */ - outl (RxFilterEnable | AcceptBroadcast | AcceptAllMulticast | AcceptMyPhys, - np->ioaddr + RxFilterAddr); - - /* Initialize other registers. - * Configure the PCI bus bursts and FIFO thresholds. - * Configure for standard, in-spec Ethernet. - */ - if (inl (np->ioaddr + ChipConfig) & 0x20000000) { /* Full duplex */ - DBG ("Full duplex\n"); - tx_config = 0xD0801002 | 0xC0000000; - rx_config = 0x10000020 | 0x10000000; - } else { - DBG ("Half duplex\n"); - tx_config = 0x10801002 & ~0xC0000000; - rx_config = 0x00000020 & ~0x10000000; - } - outl (tx_config, np->ioaddr + TxConfig); - outl (rx_config, np->ioaddr + RxConfig); - - DBG ("Tx config register = %#08x Rx config register = %#08x\n", - inl (np->ioaddr + TxConfig), - inl (np->ioaddr + RxConfig)); - - /*Set the Interrupt Mask register - */ - outl((RxOk|RxErr|TxOk|TxErr),np->ioaddr + IntrMask); - /*start the receiver - */ - outl (RxOn, np->ioaddr + ChipCmd); - - return 0; - -memory_alloc_err: - - /* Frees any allocated buffers when memory - * for all buffers requested is not available - */ - i = 0; - while (np->rx[i].cmdsts == RX_BUF_SIZE) { - free_iob (np->iobuf[i]); - i++; - } - return -ENOMEM; -} - -/** - * Close NIC - * - * @v netdev Net device - */ -static void natsemi_close (struct net_device *netdev) -{ - struct natsemi_private *np = netdev->priv; - int i; - - natsemi_reset (netdev); - - for (i = 0; i < NUM_RX_DESC ; i++) { - free_iob (np->iobuf[i]); - } -} - -/** - * Transmit packet - * - * @v netdev Network device - * @v iobuf I/O buffer - * @ret rc Return status code - */ -static int natsemi_transmit (struct net_device *netdev, struct io_buffer *iobuf) -{ - struct natsemi_private *np = netdev->priv; - - if (np->tx[np->tx_cur].cmdsts != 0) { - DBG ("TX overflow\n"); - return -ENOBUFS; - } - - /* Used by netdev_tx_complete () - */ - np->tx_iobuf[np->tx_cur] = iobuf; - - /* Pad and align packet has not been used because its not required - * by the hardware. - * iob_pad (iobuf, ETH_ZLEN); - * can be used to achieve it, if required - */ - - /* Add the packet to TX ring - */ - np->tx[np->tx_cur].bufptr = virt_to_bus (iobuf->data); - np->tx[np->tx_cur].cmdsts = iob_len (iobuf) | OWN; - - DBG ("TX id %d at %#08lx + %#08zx\n", np->tx_cur, - virt_to_bus (&iobuf->data), iob_len (iobuf)); - - /* increment the circular buffer pointer to the next buffer location - */ - np->tx_cur = (np->tx_cur + 1) % TX_RING_SIZE; - - /*start the transmitter - */ - outl (TxOn, np->ioaddr + ChipCmd); - - return 0; -} - -/** - * Poll for received packets - * - * @v netdev Network device - */ -static void natsemi_poll (struct net_device *netdev) -{ - struct natsemi_private *np = netdev->priv; - unsigned int tx_status; - unsigned int rx_status; - unsigned int intr_status; - unsigned int rx_len; - struct io_buffer *rx_iob; - int i; - - /* read the interrupt register - */ - intr_status = inl (np->ioaddr + IntrStatus); - - if (!intr_status) - goto end; - - DBG ("natsemi_poll: intr_status = %#08x\n", intr_status); - - /* Check status of transmitted packets - */ - i = np->tx_dirty; - while (i != np->tx_cur) { - tx_status = np->tx[np->tx_dirty].cmdsts; - - DBG ("tx_dirty = %d tx_cur=%d tx_status=%#08x\n", - np->tx_dirty, np->tx_cur, tx_status); - - if (tx_status & OWN) - break; - - if (! (tx_status & DescPktOK)) { - netdev_tx_complete_err (netdev,np->tx_iobuf[np->tx_dirty],-EINVAL); - DBG ("Error transmitting packet, tx_status: %#08x\n", - tx_status); - } else { - netdev_tx_complete (netdev, np->tx_iobuf[np->tx_dirty]); - DBG ("Success transmitting packet\n"); - } - - np->tx[np->tx_dirty].cmdsts = 0; - np->tx_dirty = (np->tx_dirty + 1) % TX_RING_SIZE; - i = (i + 1) % TX_RING_SIZE; - } - - /* Process received packets - */ - rx_status = (unsigned int) np->rx[np->rx_cur].cmdsts; - while ((rx_status & OWN)) { - rx_len = (rx_status & DSIZE) - CRC_SIZE; - - DBG ("Received packet, rx_curr = %d, rx_status = %#08x, rx_len = %d\n", - np->rx_cur, rx_status, rx_len); - - if ((rx_status & (DescMore | DescPktOK | RxTooLong)) != DescPktOK) { - netdev_rx_err (netdev, NULL, -EINVAL); - - DBG ("natsemi_poll: Corrupted packet received!" - " Status = %#08x\n", - np->rx[np->rx_cur].cmdsts); - - } else { - - - /* If unable allocate space for this packet, - * try again next poll - */ - rx_iob = alloc_iob (rx_len); - if (! rx_iob) - goto end; - memcpy (iob_put (rx_iob, rx_len), - np->iobuf[np->rx_cur]->data, rx_len); - /* Add this packet to the receive queue. - */ - netdev_rx (netdev, rx_iob); - } - np->rx[np->rx_cur].cmdsts = RX_BUF_SIZE; - np->rx_cur = (np->rx_cur + 1) % NUM_RX_DESC; - rx_status = np->rx[np->rx_cur].cmdsts; - } -end: - /* re-enable the potentially idle receive state machine - */ - outl (RxOn, np->ioaddr + ChipCmd); -} - -/** - * Enable/disable interrupts - * - * @v netdev Network device - * @v enable Non-zero for enable, zero for disable - */ -static void natsemi_irq (struct net_device *netdev, int enable) -{ - struct natsemi_private *np = netdev->priv; - - outl ((enable ? (RxOk | RxErr | TxOk|TxErr) : 0), - np->ioaddr + IntrMask); - outl ((enable ? 1 : 0), np->ioaddr + IntrEnable); -} - -static struct pci_device_id natsemi_nics[] = { - PCI_ROM(0x100b, 0x0020, "dp83815", "DP83815", 0), -}; - -struct pci_driver natsemi_driver __pci_driver = { - .ids = natsemi_nics, - .id_count = (sizeof (natsemi_nics) / sizeof (natsemi_nics[0])), - .probe = natsemi_probe, - .remove = natsemi_remove, -}; |