+++ /dev/null
-/*
- ns8382x.c: A U-Boot driver for the NatSemi DP8382[01].
- ported by: Mark A. Rakes (mark_rakes@vivato.net)
-
- Adapted from:
- 1. an Etherboot driver for DP8381[56] written by:
- 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@thinguin.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.
-
- 2. A Linux driver by Donald Becker, ns820.c:
- Written/copyright 1999-2002 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
-
- Datasheets available from:
- http://www.national.com/pf/DP/DP83820.html
- http://www.national.com/pf/DP/DP83821.html
-*/
-
-/* Revision History
- * October 2002 mar 1.0
- * Initial U-Boot Release.
- * Tested with Netgear GA622T (83820)
- * and SMC9452TX (83821)
- * NOTE: custom boards with these chips may (likely) require
- * a programmed EEPROM device (if present) in order to work
- * correctly.
-*/
-
-/* Includes */
-#include <common.h>
-#include <log.h>
-#include <malloc.h>
-#include <net.h>
-#include <netdev.h>
-#include <asm/io.h>
-#include <pci.h>
-#include <linux/delay.h>
-
-/* defines */
-#define DSIZE 0x00000FFF
-#define CRC_SIZE 4
-#define TOUT_LOOP 500000
-#define TX_BUF_SIZE 1536
-#define RX_BUF_SIZE 1536
-#define NUM_RX_DESC 4 /* Number of Rx descriptor registers. */
-
-enum register_offsets {
- ChipCmd = 0x00,
- ChipConfig = 0x04,
- EECtrl = 0x08,
- IntrMask = 0x14,
- IntrEnable = 0x18,
- TxRingPtr = 0x20,
- TxRingPtrHi = 0x24,
- TxConfig = 0x28,
- RxRingPtr = 0x30,
- RxRingPtrHi = 0x34,
- RxConfig = 0x38,
- PriQueue = 0x3C,
- RxFilterAddr = 0x48,
- RxFilterData = 0x4C,
- ClkRun = 0xCC,
- PCIPM = 0x44,
-};
-
-enum ChipCmdBits {
- ChipReset = 0x100,
- RxReset = 0x20,
- TxReset = 0x10,
- RxOff = 0x08,
- RxOn = 0x04,
- TxOff = 0x02,
- TxOn = 0x01
-};
-
-enum ChipConfigBits {
- LinkSts = 0x80000000,
- GigSpeed = 0x40000000,
- HundSpeed = 0x20000000,
- FullDuplex = 0x10000000,
- TBIEn = 0x01000000,
- Mode1000 = 0x00400000,
- T64En = 0x00004000,
- D64En = 0x00001000,
- M64En = 0x00000800,
- PhyRst = 0x00000400,
- PhyDis = 0x00000200,
- ExtStEn = 0x00000100,
- BEMode = 0x00000001,
-};
-#define SpeedStatus_Polarity ( GigSpeed | HundSpeed | FullDuplex)
-
-enum TxConfig_bits {
- TxDrthMask = 0x000000ff,
- TxFlthMask = 0x0000ff00,
- TxMxdmaMask = 0x00700000,
- TxMxdma_8 = 0x00100000,
- TxMxdma_16 = 0x00200000,
- TxMxdma_32 = 0x00300000,
- TxMxdma_64 = 0x00400000,
- TxMxdma_128 = 0x00500000,
- TxMxdma_256 = 0x00600000,
- TxMxdma_512 = 0x00700000,
- TxMxdma_1024 = 0x00000000,
- TxCollRetry = 0x00800000,
- TxAutoPad = 0x10000000,
- TxMacLoop = 0x20000000,
- TxHeartIgn = 0x40000000,
- TxCarrierIgn = 0x80000000
-};
-
-enum RxConfig_bits {
- RxDrthMask = 0x0000003e,
- RxMxdmaMask = 0x00700000,
- RxMxdma_8 = 0x00100000,
- RxMxdma_16 = 0x00200000,
- RxMxdma_32 = 0x00300000,
- RxMxdma_64 = 0x00400000,
- RxMxdma_128 = 0x00500000,
- RxMxdma_256 = 0x00600000,
- RxMxdma_512 = 0x00700000,
- RxMxdma_1024 = 0x00000000,
- RxAcceptLenErr = 0x04000000,
- RxAcceptLong = 0x08000000,
- RxAcceptTx = 0x10000000,
- RxStripCRC = 0x20000000,
- RxAcceptRunt = 0x40000000,
- RxAcceptErr = 0x80000000,
-};
-
-/* Bits in the RxMode register. */
-enum rx_mode_bits {
- RxFilterEnable = 0x80000000,
- AcceptAllBroadcast = 0x40000000,
- AcceptAllMulticast = 0x20000000,
- AcceptAllUnicast = 0x10000000,
- AcceptPerfectMatch = 0x08000000,
-};
-
-typedef struct _BufferDesc {
- u32 link;
- u32 bufptr;
- vu_long cmdsts;
- u32 extsts; /*not used here */
-} BufferDesc;
-
-/* Bits in network_desc.status */
-enum desc_status_bits {
- DescOwn = 0x80000000, DescMore = 0x40000000, DescIntr = 0x20000000,
- DescNoCRC = 0x10000000, DescPktOK = 0x08000000,
- DescSizeMask = 0xfff,
-
- DescTxAbort = 0x04000000, DescTxFIFO = 0x02000000,
- DescTxCarrier = 0x01000000, DescTxDefer = 0x00800000,
- DescTxExcDefer = 0x00400000, DescTxOOWCol = 0x00200000,
- DescTxExcColl = 0x00100000, DescTxCollCount = 0x000f0000,
-
- DescRxAbort = 0x04000000, DescRxOver = 0x02000000,
- DescRxDest = 0x01800000, DescRxLong = 0x00400000,
- DescRxRunt = 0x00200000, DescRxInvalid = 0x00100000,
- DescRxCRC = 0x00080000, DescRxAlign = 0x00040000,
- DescRxLoop = 0x00020000, DesRxColl = 0x00010000,
-};
-
-/* Bits in MEAR */
-enum mii_reg_bits {
- MDIO_ShiftClk = 0x0040,
- MDIO_EnbOutput = 0x0020,
- MDIO_Data = 0x0010,
-};
-
-/* PHY Register offsets. */
-enum phy_reg_offsets {
- BMCR = 0x00,
- BMSR = 0x01,
- PHYIDR1 = 0x02,
- PHYIDR2 = 0x03,
- ANAR = 0x04,
- KTCR = 0x09,
-};
-
-/* basic mode control register bits */
-enum bmcr_bits {
- Bmcr_Reset = 0x8000,
- Bmcr_Loop = 0x4000,
- Bmcr_Speed0 = 0x2000,
- Bmcr_AutoNegEn = 0x1000, /*if set ignores Duplex, Speed[01] */
- Bmcr_RstAutoNeg = 0x0200,
- Bmcr_Duplex = 0x0100,
- Bmcr_Speed1 = 0x0040,
- Bmcr_Force10H = 0x0000,
- Bmcr_Force10F = 0x0100,
- Bmcr_Force100H = 0x2000,
- Bmcr_Force100F = 0x2100,
- Bmcr_Force1000H = 0x0040,
- Bmcr_Force1000F = 0x0140,
-};
-
-/* auto negotiation advertisement register */
-enum anar_bits {
- anar_adv_100F = 0x0100,
- anar_adv_100H = 0x0080,
- anar_adv_10F = 0x0040,
- anar_adv_10H = 0x0020,
- anar_ieee_8023 = 0x0001,
-};
-
-/* 1K-base T control register */
-enum ktcr_bits {
- ktcr_adv_1000H = 0x0100,
- ktcr_adv_1000F = 0x0200,
-};
-
-/* Globals */
-static u32 SavedClkRun;
-static unsigned int cur_rx;
-static unsigned int rx_config;
-static unsigned int tx_config;
-
-/* Note: transmit and receive buffers and descriptors must be
- long long word aligned */
-static BufferDesc txd __attribute__ ((aligned(8)));
-static BufferDesc rxd[NUM_RX_DESC] __attribute__ ((aligned(8)));
-static unsigned char txb[TX_BUF_SIZE] __attribute__ ((aligned(8)));
-static unsigned char rxb[NUM_RX_DESC * RX_BUF_SIZE]
- __attribute__ ((aligned(8)));
-
-/* Function Prototypes */
-static int mdio_read(struct eth_device *dev, int phy_id, int addr);
-static void mdio_write(struct eth_device *dev, int phy_id, int addr, int value);
-static void mdio_sync(struct eth_device *dev, u32 offset);
-static int ns8382x_init(struct eth_device *dev, struct bd_info * bis);
-static void ns8382x_reset(struct eth_device *dev);
-static void ns8382x_init_rxfilter(struct eth_device *dev);
-static void ns8382x_init_txd(struct eth_device *dev);
-static void ns8382x_init_rxd(struct eth_device *dev);
-static void ns8382x_set_rx_mode(struct eth_device *dev);
-static void ns8382x_check_duplex(struct eth_device *dev);
-static int ns8382x_send(struct eth_device *dev, void *packet, int length);
-static int ns8382x_poll(struct eth_device *dev);
-static void ns8382x_disable(struct eth_device *dev);
-
-static struct pci_device_id supported[] = {
- {PCI_VENDOR_ID_NS, PCI_DEVICE_ID_NS_83820},
- {}
-};
-
-#define bus_to_phys(a) pci_mem_to_phys((pci_dev_t)dev->priv, a)
-#define phys_to_bus(a) pci_phys_to_mem((pci_dev_t)dev->priv, a)
-
-static inline int
-INW(struct eth_device *dev, u_long addr)
-{
- return le16_to_cpu(*(vu_short *) (addr + dev->iobase));
-}
-
-static int
-INL(struct eth_device *dev, u_long addr)
-{
- return le32_to_cpu(*(vu_long *) (addr + dev->iobase));
-}
-
-static inline void
-OUTW(struct eth_device *dev, int command, u_long addr)
-{
- *(vu_short *) ((addr + dev->iobase)) = cpu_to_le16(command);
-}
-
-static inline void
-OUTL(struct eth_device *dev, int command, u_long addr)
-{
- *(vu_long *) ((addr + dev->iobase)) = cpu_to_le32(command);
-}
-
-/* Function: ns8382x_initialize
- * Description: Retrieves the MAC address of the card, and sets up some
- * globals required by other routines, and initializes the NIC, making it
- * ready to send and receive packets.
- * Side effects: initializes ns8382xs, ready to receive packets.
- * Returns: int: number of cards found
- */
-
-int
-ns8382x_initialize(struct bd_info * bis)
-{
- pci_dev_t devno;
- int card_number = 0;
- struct eth_device *dev;
- u32 iobase, status;
- int i, idx = 0;
- u32 phyAddress;
- u32 tmp;
- u32 chip_config;
-
- while (1) { /* Find PCI device(s) */
- if ((devno = pci_find_devices(supported, idx++)) < 0)
- break;
-
- pci_read_config_dword(devno, PCI_BASE_ADDRESS_1, &iobase);
- iobase &= ~0x3; /* 1: unused and 0:I/O Space Indicator */
-
- debug("ns8382x: NatSemi dp8382x @ 0x%x\n", iobase);
-
- pci_write_config_dword(devno, PCI_COMMAND,
- PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER);
-
- /* Check if I/O accesses and Bus Mastering are enabled. */
- pci_read_config_dword(devno, PCI_COMMAND, &status);
- if (!(status & PCI_COMMAND_MEMORY)) {
- printf("Error: Can not enable MEM access.\n");
- continue;
- } else if (!(status & PCI_COMMAND_MASTER)) {
- printf("Error: Can not enable Bus Mastering.\n");
- continue;
- }
-
- dev = (struct eth_device *) malloc(sizeof *dev);
- if (!dev) {
- printf("ns8382x: Can not allocate memory\n");
- break;
- }
- memset(dev, 0, sizeof(*dev));
-
- sprintf(dev->name, "dp8382x#%d", card_number);
- dev->iobase = bus_to_phys(iobase);
- dev->priv = (void *) devno;
- dev->init = ns8382x_init;
- dev->halt = ns8382x_disable;
- dev->send = ns8382x_send;
- dev->recv = ns8382x_poll;
-
- /* ns8382x has a non-standard PM control register
- * in PCI config space. Some boards apparently need
- * to be brought to D0 in this manner. */
- pci_read_config_dword(devno, PCIPM, &tmp);
- if (tmp & (0x03 | 0x100)) { /* D0 state, disable PME assertion */
- u32 newtmp = tmp & ~(0x03 | 0x100);
- pci_write_config_dword(devno, PCIPM, newtmp);
- }
-
- /* get MAC address */
- for (i = 0; i < 3; i++) {
- u32 data;
- char *mac = (char *)&dev->enetaddr[i * 2];
-
- OUTL(dev, i * 2, RxFilterAddr);
- data = INL(dev, RxFilterData);
- *mac++ = data;
- *mac++ = data >> 8;
- }
- /* get PHY address, can't be zero */
- for (phyAddress = 1; phyAddress < 32; phyAddress++) {
- u32 rev, phy1;
-
- phy1 = mdio_read(dev, phyAddress, PHYIDR1);
- if (phy1 == 0x2000) { /*check for 83861/91 */
- rev = mdio_read(dev, phyAddress, PHYIDR2);
- if ((rev & ~(0x000f)) == 0x00005c50 ||
- (rev & ~(0x000f)) == 0x00005c60) {
- debug("phy rev is %x\n", rev);
- debug("phy address is %x\n",
- phyAddress);
- break;
- }
- }
- }
-
- /* set phy to autonegotiate && advertise everything */
- mdio_write(dev, phyAddress, KTCR,
- (ktcr_adv_1000H | ktcr_adv_1000F));
- mdio_write(dev, phyAddress, ANAR,
- (anar_adv_100F | anar_adv_100H | anar_adv_10H |
- anar_adv_10F | anar_ieee_8023));
- mdio_write(dev, phyAddress, BMCR, 0x0); /*restore */
- mdio_write(dev, phyAddress, BMCR,
- (Bmcr_AutoNegEn | Bmcr_RstAutoNeg));
- /* Reset the chip to erase any previous misconfiguration. */
- OUTL(dev, (ChipReset), ChipCmd);
-
- chip_config = INL(dev, ChipConfig);
- /* reset the phy */
- OUTL(dev, (chip_config | PhyRst), ChipConfig);
- /* power up and initialize transceiver */
- OUTL(dev, (chip_config & ~(PhyDis)), ChipConfig);
-
- mdio_sync(dev, EECtrl);
-
- {
- u32 chpcfg =
- INL(dev, ChipConfig) ^ SpeedStatus_Polarity;
-
- debug("%s: Transceiver 10%s %s duplex.\n", dev->name,
- (chpcfg & GigSpeed) ? "00" : (chpcfg & HundSpeed)
- ? "0" : "",
- chpcfg & FullDuplex ? "full" : "half");
- debug("%s: %02x:%02x:%02x:%02x:%02x:%02x\n", dev->name,
- dev->enetaddr[0], dev->enetaddr[1],
- dev->enetaddr[2], dev->enetaddr[3],
- dev->enetaddr[4], dev->enetaddr[5]);
- }
-
- /* 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. */
- SavedClkRun = INL(dev, ClkRun);
- OUTL(dev, SavedClkRun & ~0x100, ClkRun);
-
- eth_register(dev);
-
- card_number++;
-
- pci_write_config_byte(devno, PCI_LATENCY_TIMER, 0x60);
-
- udelay(10 * 1000);
- }
- return card_number;
-}
-
-/* MII transceiver control section.
- Read and write MII registers using software-generated serial MDIO
- protocol. See the MII specifications or DP83840A data sheet for details.
-
- The maximum data clock rate is 2.5 MHz. To meet minimum timing we
- must flush writes to the PCI bus with a PCI read. */
-#define mdio_delay(mdio_addr) INL(dev, mdio_addr)
-
-#define MDIO_EnbIn (0)
-#define MDIO_WRITE0 (MDIO_EnbOutput)
-#define MDIO_WRITE1 (MDIO_Data | MDIO_EnbOutput)
-
-/* Generate the preamble required for initial synchronization and
- a few older transceivers. */
-static void
-mdio_sync(struct eth_device *dev, u32 offset)
-{
- int bits = 32;
-
- /* Establish sync by sending at least 32 logic ones. */
- while (--bits >= 0) {
- OUTL(dev, MDIO_WRITE1, offset);
- mdio_delay(offset);
- OUTL(dev, MDIO_WRITE1 | MDIO_ShiftClk, offset);
- mdio_delay(offset);
- }
-}
-
-static int
-mdio_read(struct eth_device *dev, int phy_id, int addr)
-{
- int mii_cmd = (0xf6 << 10) | (phy_id << 5) | addr;
- int i, retval = 0;
-
- /* Shift the read command bits out. */
- for (i = 15; i >= 0; i--) {
- int dataval = (mii_cmd & (1 << i)) ? MDIO_WRITE1 : MDIO_WRITE0;
-
- OUTL(dev, dataval, EECtrl);
- mdio_delay(EECtrl);
- OUTL(dev, dataval | MDIO_ShiftClk, EECtrl);
- mdio_delay(EECtrl);
- }
- /* Read the two transition, 16 data, and wire-idle bits. */
- for (i = 19; i > 0; i--) {
- OUTL(dev, MDIO_EnbIn, EECtrl);
- mdio_delay(EECtrl);
- retval =
- (retval << 1) | ((INL(dev, EECtrl) & MDIO_Data) ? 1 : 0);
- OUTL(dev, MDIO_EnbIn | MDIO_ShiftClk, EECtrl);
- mdio_delay(EECtrl);
- }
- return (retval >> 1) & 0xffff;
-}
-
-static void
-mdio_write(struct eth_device *dev, int phy_id, int addr, int value)
-{
- int mii_cmd = (0x5002 << 16) | (phy_id << 23) | (addr << 18) | value;
- int i;
-
- /* Shift the command bits out. */
- for (i = 31; i >= 0; i--) {
- int dataval = (mii_cmd & (1 << i)) ? MDIO_WRITE1 : MDIO_WRITE0;
-
- OUTL(dev, dataval, EECtrl);
- mdio_delay(EECtrl);
- OUTL(dev, dataval | MDIO_ShiftClk, EECtrl);
- mdio_delay(EECtrl);
- }
- /* Clear out extra bits. */
- for (i = 2; i > 0; i--) {
- OUTL(dev, MDIO_EnbIn, EECtrl);
- mdio_delay(EECtrl);
- OUTL(dev, MDIO_EnbIn | MDIO_ShiftClk, EECtrl);
- mdio_delay(EECtrl);
- }
- return;
-}
-
-/* Function: ns8382x_init
- * Description: resets the ethernet controller chip and configures
- * registers and data structures required for sending and receiving packets.
- * Arguments: struct eth_device *dev: NIC data structure
- * returns: int.
- */
-
-static int
-ns8382x_init(struct eth_device *dev, struct bd_info * bis)
-{
- u32 config;
-
- ns8382x_reset(dev);
-
- /* 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(dev, SavedClkRun & ~0x100, ClkRun);
-
- ns8382x_init_rxfilter(dev);
- ns8382x_init_txd(dev);
- ns8382x_init_rxd(dev);
-
- /*set up ChipConfig */
- config = INL(dev, ChipConfig);
- /*turn off 64 bit ops && Ten-bit interface
- * && big-endian mode && extended status */
- config &= ~(TBIEn | Mode1000 | T64En | D64En | M64En | BEMode | PhyDis | ExtStEn);
- OUTL(dev, config, ChipConfig);
-
- /* Configure the PCI bus bursts and FIFO thresholds. */
- tx_config = TxCarrierIgn | TxHeartIgn | TxAutoPad
- | TxCollRetry | TxMxdma_1024 | (0x1002);
- rx_config = RxMxdma_1024 | 0x20;
-
- debug("%s: Setting TxConfig Register %#08X\n", dev->name, tx_config);
- debug("%s: Setting RxConfig Register %#08X\n", dev->name, rx_config);
-
- OUTL(dev, tx_config, TxConfig);
- OUTL(dev, rx_config, RxConfig);
-
- /*turn off priority queueing */
- OUTL(dev, 0x0, PriQueue);
-
- ns8382x_check_duplex(dev);
- ns8382x_set_rx_mode(dev);
-
- OUTL(dev, (RxOn | TxOn), ChipCmd);
- return 1;
-}
-
-/* Function: ns8382x_reset
- * Description: soft resets the controller chip
- * Arguments: struct eth_device *dev: NIC data structure
- * Returns: void.
- */
-static void
-ns8382x_reset(struct eth_device *dev)
-{
- OUTL(dev, ChipReset, ChipCmd);
- while (INL(dev, ChipCmd))
- /*wait until done */ ;
- OUTL(dev, 0, IntrMask);
- OUTL(dev, 0, IntrEnable);
-}
-
-/* Function: ns8382x_init_rxfilter
- * Description: sets receive filter address to our MAC address
- * Arguments: struct eth_device *dev: NIC data structure
- * returns: void.
- */
-
-static void
-ns8382x_init_rxfilter(struct eth_device *dev)
-{
- int i;
-
- for (i = 0; i < ETH_ALEN; i += 2) {
- OUTL(dev, i, RxFilterAddr);
- OUTW(dev, dev->enetaddr[i] + (dev->enetaddr[i + 1] << 8),
- RxFilterData);
- }
-}
-
-/* Function: ns8382x_init_txd
- * Description: initializes the Tx descriptor
- * Arguments: struct eth_device *dev: NIC data structure
- * returns: void.
- */
-
-static void
-ns8382x_init_txd(struct eth_device *dev)
-{
- txd.link = (u32) 0;
- txd.bufptr = cpu_to_le32((u32) & txb[0]);
- txd.cmdsts = (u32) 0;
- txd.extsts = (u32) 0;
-
- OUTL(dev, 0x0, TxRingPtrHi);
- OUTL(dev, phys_to_bus((u32)&txd), TxRingPtr);
-
- debug("ns8382x_init_txd: TX descriptor register loaded with: %#08X (&txd: %p)\n",
- INL(dev, TxRingPtr), &txd);
-}
-
-/* Function: ns8382x_init_rxd
- * Description: initializes the Rx descriptor ring
- * Arguments: struct eth_device *dev: NIC data structure
- * Returns: void.
- */
-
-static void
-ns8382x_init_rxd(struct eth_device *dev)
-{
- int i;
-
- OUTL(dev, 0x0, RxRingPtrHi);
-
- cur_rx = 0;
- for (i = 0; i < NUM_RX_DESC; i++) {
- rxd[i].link =
- cpu_to_le32((i + 1 <
- NUM_RX_DESC) ? (u32) & rxd[i +
- 1] : (u32) &
- rxd[0]);
- rxd[i].extsts = cpu_to_le32((u32) 0x0);
- rxd[i].cmdsts = cpu_to_le32((u32) RX_BUF_SIZE);
- rxd[i].bufptr = cpu_to_le32((u32) & rxb[i * RX_BUF_SIZE]);
-
- debug
- ("ns8382x_init_rxd: rxd[%d]=%p link=%X cmdsts=%X bufptr=%X\n",
- i, &rxd[i], le32_to_cpu(rxd[i].link),
- le32_to_cpu(rxd[i].cmdsts), le32_to_cpu(rxd[i].bufptr));
- }
- OUTL(dev, phys_to_bus((u32) & rxd), RxRingPtr);
-
- debug("ns8382x_init_rxd: RX descriptor register loaded with: %X\n",
- INL(dev, RxRingPtr));
-}
-
-/* Function: ns8382x_set_rx_mode
- * Description:
- * sets the receive mode to accept all broadcast packets and packets
- * with our MAC address, and reject all multicast packets.
- * Arguments: struct eth_device *dev: NIC data structure
- * Returns: void.
- */
-
-static void
-ns8382x_set_rx_mode(struct eth_device *dev)
-{
- u32 rx_mode = 0x0;
- /*spec says RxFilterEnable has to be 0 for rest of
- * this stuff to be properly configured. Linux driver
- * seems to support this*/
-/* OUTL(dev, rx_mode, RxFilterAddr);*/
- rx_mode = (RxFilterEnable | AcceptAllBroadcast | AcceptPerfectMatch);
- OUTL(dev, rx_mode, RxFilterAddr);
- printf("ns8382x_set_rx_mode: set to %X\n", rx_mode);
- /*now we turn RxFilterEnable back on */
- /*rx_mode |= RxFilterEnable;
- OUTL(dev, rx_mode, RxFilterAddr);*/
-}
-
-static void
-ns8382x_check_duplex(struct eth_device *dev)
-{
- int gig = 0;
- int hun = 0;
- int duplex = 0;
- int config = (INL(dev, ChipConfig) ^ SpeedStatus_Polarity);
-
- duplex = (config & FullDuplex) ? 1 : 0;
- gig = (config & GigSpeed) ? 1 : 0;
- hun = (config & HundSpeed) ? 1 : 0;
-
- debug("%s: Setting 10%s %s-duplex based on negotiated link"
- " capability.\n", dev->name, (gig) ? "00" : (hun) ? "0" : "",
- duplex ? "full" : "half");
-
- if (duplex) {
- rx_config |= RxAcceptTx;
- tx_config |= (TxCarrierIgn | TxHeartIgn);
- } else {
- rx_config &= ~RxAcceptTx;
- tx_config &= ~(TxCarrierIgn | TxHeartIgn);
- }
-
- debug("%s: Resetting TxConfig Register %#08X\n", dev->name, tx_config);
- debug("%s: Resetting RxConfig Register %#08X\n", dev->name, rx_config);
-
- OUTL(dev, tx_config, TxConfig);
- OUTL(dev, rx_config, RxConfig);
-
- /*if speed is 10 or 100, remove MODE1000,
- * if it's 1000, then set it */
- config = INL(dev, ChipConfig);
- if (gig)
- config |= Mode1000;
- else
- config &= ~Mode1000;
-
- debug("%s: %setting Mode1000\n", dev->name, (gig) ? "S" : "Uns");
-
- OUTL(dev, config, ChipConfig);
-}
-
-/* Function: ns8382x_send
- * Description: transmits a packet and waits for completion or timeout.
- * Returns: void. */
-static int ns8382x_send(struct eth_device *dev, void *packet, int length)
-{
- u32 i, status = 0;
- vu_long tx_stat = 0;
-
- /* Stop the transmitter */
- OUTL(dev, TxOff, ChipCmd);
-
- debug("ns8382x_send: sending %d bytes\n", (int)length);
-
- /* set the transmit buffer descriptor and enable Transmit State Machine */
- txd.link = cpu_to_le32(0x0);
- txd.bufptr = cpu_to_le32(phys_to_bus((u32)packet));
- txd.extsts = cpu_to_le32(0x0);
- txd.cmdsts = cpu_to_le32(DescOwn | length);
-
- /* load Transmit Descriptor Register */
- OUTL(dev, phys_to_bus((u32) & txd), TxRingPtr);
-
- debug("ns8382x_send: TX descriptor register loaded with: %#08X\n",
- INL(dev, TxRingPtr));
- debug("\ttxd.link:%X\tbufp:%X\texsts:%X\tcmdsts:%X\n",
- le32_to_cpu(txd.link), le32_to_cpu(txd.bufptr),
- le32_to_cpu(txd.extsts), le32_to_cpu(txd.cmdsts));
-
- /* restart the transmitter */
- OUTL(dev, TxOn, ChipCmd);
-
- for (i = 0; (tx_stat = le32_to_cpu(txd.cmdsts)) & DescOwn; i++) {
- if (i >= TOUT_LOOP) {
- printf ("%s: tx error buffer not ready: txd.cmdsts %#lX\n",
- dev->name, tx_stat);
- goto Done;
- }
- }
-
- if (!(tx_stat & DescPktOK)) {
- printf("ns8382x_send: Transmit error, Tx status %lX.\n", tx_stat);
- goto Done;
- }
-
- debug("ns8382x_send: tx_stat: %#08lX\n", tx_stat);
-
- status = 1;
-Done:
- return status;
-}
-
-/* Function: ns8382x_poll
- * Description: checks for a received packet and returns it if found.
- * Arguments: struct eth_device *dev: NIC data structure
- * Returns: 1 if packet was received.
- * 0 if no packet was received.
- * Side effects:
- * Returns (copies) the packet to the array dev->packet.
- * Returns the length of the packet.
- */
-
-static int
-ns8382x_poll(struct eth_device *dev)
-{
- int retstat = 0;
- int length = 0;
- vu_long rx_status = le32_to_cpu(rxd[cur_rx].cmdsts);
-
- if (!(rx_status & (u32) DescOwn))
- return retstat;
-
- debug("ns8382x_poll: got a packet: cur_rx:%u, status:%lx\n",
- cur_rx, rx_status);
-
- length = (rx_status & DSIZE) - CRC_SIZE;
-
- if ((rx_status & (DescMore | DescPktOK | DescRxLong)) != DescPktOK) {
- /* corrupted packet received */
- printf("ns8382x_poll: Corrupted packet, status:%lx\n",
- rx_status);
- retstat = 0;
- } else {
- /* give packet to higher level routine */
- net_process_received_packet((rxb + cur_rx * RX_BUF_SIZE),
- length);
- retstat = 1;
- }
-
- /* return the descriptor and buffer to receive ring */
- rxd[cur_rx].cmdsts = cpu_to_le32(RX_BUF_SIZE);
- rxd[cur_rx].bufptr = cpu_to_le32((u32) & rxb[cur_rx * RX_BUF_SIZE]);
-
- if (++cur_rx == NUM_RX_DESC)
- cur_rx = 0;
-
- /* re-enable the potentially idle receive state machine */
- OUTL(dev, RxOn, ChipCmd);
-
- return retstat;
-}
-
-/* Function: ns8382x_disable
- * Description: Turns off interrupts and stops Tx and Rx engines
- * Arguments: struct eth_device *dev: NIC data structure
- * Returns: void.
- */
-
-static void
-ns8382x_disable(struct eth_device *dev)
-{
- /* Disable interrupts using the mask. */
- OUTL(dev, 0, IntrMask);
- OUTL(dev, 0, IntrEnable);
-
- /* Stop the chip's Tx and Rx processes. */
- OUTL(dev, (RxOff | TxOff), ChipCmd);
-
- /* Restore PME enable bit */
- OUTL(dev, SavedClkRun, ClkRun);
-}
projects / u-boot.git / commitdiff