| /* |
| 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 <malloc.h> |
| #include <net.h> |
| #include <asm/io.h> |
| #include <pci.h> |
| |
| #if (CONFIG_COMMANDS & CFG_CMD_NET) && defined(CONFIG_NET_MULTI) && \ |
| defined(CONFIG_NS8382X) |
| |
| /* defines */ |
| #define DSIZE 0x00000FFF |
| #define ETH_ALEN 6 |
| #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, bd_t * 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, volatile 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 recieve packets. |
| * Returns: int: number of cards found |
| */ |
| |
| int |
| ns8382x_initialize(bd_t * 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 */ |
| |
| #ifdef NS8382X_DEBUG |
| printf("ns8382x: NatSemi dp8382x @ 0x%x\n", iobase); |
| #endif |
| |
| 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); |
| |
| 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) { |
| #ifdef NS8382X_DEBUG |
| printf("phy rev is %x\n", rev); |
| printf("phy address is %x\n", |
| phyAddress); |
| #endif |
| 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); |
| #ifdef NS8382X_DEBUG |
| { |
| u32 chpcfg = |
| INL(dev, ChipConfig) ^ SpeedStatus_Polarity; |
| |
| printf("%s: Transceiver 10%s %s duplex.\n", dev->name, |
| (chpcfg & GigSpeed) ? "00" : (chpcfg & HundSpeed) |
| ? "0" : "", |
| chpcfg & FullDuplex ? "full" : "half"); |
| printf("%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]); |
| } |
| #endif |
| /* 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, bd_t * 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; |
| #ifdef NS8382X_DEBUG |
| printf("%s: Setting TxConfig Register %#08X\n", dev->name, tx_config); |
| printf("%s: Setting RxConfig Register %#08X\n", dev->name, rx_config); |
| #endif |
| 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); |
| #ifdef NS8382X_DEBUG |
| printf("ns8382x_init_txd: TX descriptor register loaded with: %#08X (&txd: %p)\n", |
| INL(dev, TxRingPtr), &txd); |
| #endif |
| } |
| |
| /* 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]); |
| #ifdef NS8382X_DEBUG |
| printf |
| ("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)); |
| #endif |
| } |
| OUTL(dev, phys_to_bus((u32) & rxd), RxRingPtr); |
| |
| #ifdef NS8382X_DEBUG |
| printf("ns8382x_init_rxd: RX descriptor register loaded with: %X\n", |
| INL(dev, RxRingPtr)); |
| #endif |
| } |
| |
| /* 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; |
| #ifdef NS8382X_DEBUG |
| printf("%s: Setting 10%s %s-duplex based on negotiated link" |
| " capability.\n", dev->name, (gig) ? "00" : (hun) ? "0" : "", |
| duplex ? "full" : "half"); |
| #endif |
| if (duplex) { |
| rx_config |= RxAcceptTx; |
| tx_config |= (TxCarrierIgn | TxHeartIgn); |
| } else { |
| rx_config &= ~RxAcceptTx; |
| tx_config &= ~(TxCarrierIgn | TxHeartIgn); |
| } |
| #ifdef NS8382X_DEBUG |
| printf("%s: Resetting TxConfig Register %#08X\n", dev->name, tx_config); |
| printf("%s: Resetting RxConfig Register %#08X\n", dev->name, rx_config); |
| #endif |
| 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; |
| |
| #ifdef NS8382X_DEBUG |
| printf("%s: %setting Mode1000\n", dev->name, (gig) ? "S" : "Uns"); |
| #endif |
| 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, volatile void *packet, int length) |
| { |
| u32 i, status = 0; |
| vu_long tx_stat = 0; |
| |
| /* Stop the transmitter */ |
| OUTL(dev, TxOff, ChipCmd); |
| #ifdef NS8382X_DEBUG |
| printf("ns8382x_send: sending %d bytes\n", (int)length); |
| #endif |
| |
| /* 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); |
| #ifdef NS8382X_DEBUG |
| printf("ns8382x_send: TX descriptor register loaded with: %#08X\n", |
| INL(dev, TxRingPtr)); |
| printf("\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)); |
| #endif |
| /* 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 %#X\n", |
| dev->name, tx_stat); |
| goto Done; |
| } |
| } |
| |
| if (!(tx_stat & DescPktOK)) { |
| printf("ns8382x_send: Transmit error, Tx status %X.\n", tx_stat); |
| goto Done; |
| } |
| #ifdef NS8382X_DEBUG |
| printf("ns8382x_send: tx_stat: %#08X\n", tx_stat); |
| #endif |
| |
| 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; |
| #ifdef NS8382X_DEBUG |
| printf("ns8382x_poll: got a packet: cur_rx:%u, status:%lx\n", |
| cur_rx, rx_status); |
| #endif |
| 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 */ |
| NetReceive((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); |
| } |
| |
| #endif |
