3c515.c File Reference

#include "etherboot.h"
#include "nic.h"
#include <ipxe/isapnp.h>
#include <ipxe/isa.h>
#include <ipxe/ethernet.h>

Go to the source code of this file.

Data Structures
union	wn3_config
struct	wn3_config::w3_config_fields
struct	boom_rx_desc
struct	boom_tx_desc
struct	corkscrew_private
struct	media_table

Macros
#define	HZ   100
#define	CORKSCREW   1
#define	AUTOMEDIA   1
#define	VORTEX_BUS_MASTER
#define	TX_RING_SIZE   16
#define	RX_RING_SIZE   16
#define	PKT_BUF_SZ   1536 /* Size of each temporary Rx buffer. */
#define	DRIVER_DEBUG   1
#define	CORKSCREW_ID   10
#define	EL3WINDOW(win_num)   outw(SelectWindow + (win_num), nic->ioaddr + EL3_CMD)
#define	EL3_CMD   0x0e
#define	EL3_STATUS   0x0e
#define	RX_BYTES_MASK   (unsigned short) (0x07ff)
#define	vp   NIC_FAKE_BSS_PTR ( struct corkscrew_private )

Enumerations
enum	corkscrew_cmd {   TotalReset = 0 << 11, SelectWindow = 1 << 11, StartCoax = 2 << 11, RxDisable = 3 << 11,   RxEnable = 4 << 11, RxReset = 5 << 11, UpStall = 6 << 11, UpUnstall = (6 << 11) + 1,   DownStall = (6 << 11) + 2, DownUnstall = (6 << 11) + 3, RxDiscard = 8 << 11, TxEnable = 9 << 11,   TxDisable, TxReset = 11 << 11, FakeIntr = 12 << 11, AckIntr = 13 << 11,   SetIntrEnb = 14 << 11, SetStatusEnb = 15 << 11, SetRxFilter = 16 << 11, SetRxThreshold,   SetTxThreshold = 18 << 11, SetTxStart = 19 << 11, StartDMAUp = 20 << 11, StartDMADown = (20 << 11) + 1,   StatsEnable, StatsDisable = 22 << 11, StopCoax = 23 << 11 }
enum	RxFilter { RxStation = 1, RxMulticast = 2, RxBroadcast = 4, RxProm = 8 }
enum	corkscrew_status {   IntLatch = 0x0001, AdapterFailure = 0x0002, TxComplete = 0x0004, TxAvailable = 0x0008,   RxComplete = 0x0010, RxEarly = 0x0020, IntReq = 0x0040, StatsFull = 0x0080,   DMADone = 1 << 8, DownComplete = 1 << 9, UpComplete = 1 << 10, DMAInProgress = 1 << 11,   CmdInProgress = 1 << 12 }
enum	Window1 {   TX_FIFO = 0x10, RX_FIFO = 0x10, RxErrors = 0x14, RxStatus = 0x18,   Timer = 0x1A, TxStatus = 0x1B, TxFree = 0x1C }
enum	Window0 { Wn0IRQ = 0x08, Wn0EepromCmd = 0x200A, Wn0EepromData = 0x200C }
enum	Win0_EEPROM_bits {   EEPROM_Read = 0x80, EEPROM_WRITE = 0x40, EEPROM_ERASE = 0xC0, EEPROM_EWENB = 0x30,   EEPROM_EWDIS = 0x00 }
enum	Window3 { Wn3_Config = 0, Wn3_MAC_Ctrl = 6, Wn3_Options = 8 }
enum	Window4 { Wn4_NetDiag = 6, Wn4_Media = 10 }
enum	Win4_Media_bits { Media_SQE = 0x0008, Media_10TP = 0x00C0, Media_Lnk = 0x0080, Media_LnkBeat = 0x0800 }
enum	Window7 { Wn7_MasterAddr = 0, Wn7_MasterLen = 6, Wn7_MasterStatus = 12 }
enum	MasterCtrl {   PktStatus = 0x400, DownListPtr = 0x404, FragAddr = 0x408, FragLen,   TxFreeThreshold = 0x40f, UpPktStatus = 0x410, UpListPtr = 0x418 }
enum	rx_desc_status { RxDComplete = 0x00008000, RxDError = 0x4000 }
enum	xcvr_types {   XCVR_10baseT, XCVR_AUI, XCVR_10baseTOnly, XCVR_10base2,   XCVR_100baseTx, XCVR_100baseFx, XCVR_MII = 6, XCVR_Default = 8 }

Functions
	FILE_LICENCE (GPL2_OR_LATER)
static void	t3c515_wait (unsigned int nticks)
static int	corkscrew_found_device (int ioaddr, int irq, int product_index, int options, struct nic *nic)
static int	corkscrew_probe1 (int ioaddr, int irq, int product_index, struct nic *nic)
static void	t515_reset (struct nic *nic)
static int	t515_poll (struct nic *nic, int retrieve)
static void	t515_transmit (struct nic *nic, const char *d, unsigned int t, unsigned int s, const char *p)
static void	t515_disable (struct nic *nic, struct isapnp_device *isapnp)
static void	t515_irq (struct nic *nic __unused, irq_action_t action __unused)
static int	t515_probe (struct nic *nic, struct isapnp_device *isapnp)
	ISAPNP_DRIVER (t515_driver, t515_adapters)
	DRIVER ("3c515", nic_driver, isapnp_driver, t515_driver, t515_probe, t515_disable, *vp)
	ISA_ROM ("3c515", "3c515 Fast EtherLink ISAPnP")

Variables
static int	if_port
static struct media_table	media_tbl []
static int	options = -1
static char	padmap []
static struct nic_operations	t515_operations
static struct isapnp_device_id	t515_adapters []

Macro Definition Documentation

HZ

#define HZ   100

Definition at line 65 of file 3c515.c.

CORKSCREW

#define CORKSCREW   1

Definition at line 68 of file 3c515.c.

AUTOMEDIA

#define AUTOMEDIA   1

Definition at line 75 of file 3c515.c.

VORTEX_BUS_MASTER

#define VORTEX_BUS_MASTER

Definition at line 81 of file 3c515.c.

TX_RING_SIZE

#define TX_RING_SIZE   16

Definition at line 85 of file 3c515.c.

RX_RING_SIZE

#define RX_RING_SIZE   16

Definition at line 86 of file 3c515.c.

PKT_BUF_SZ

#define PKT_BUF_SZ   1536 /* Size of each temporary Rx buffer. */

Definition at line 87 of file 3c515.c.

DRIVER_DEBUG

#define DRIVER_DEBUG   1

Definition at line 91 of file 3c515.c.

CORKSCREW_ID

#define CORKSCREW_ID   10

Definition at line 97 of file 3c515.c.

EL3WINDOW

#define EL3WINDOW

(

win_num

)

outw(SelectWindow + (win_num), nic->ioaddr + EL3_CMD)

Definition at line 99 of file 3c515.c.

EL3_CMD

#define EL3_CMD   0x0e

Definition at line 101 of file 3c515.c.

EL3_STATUS

#define EL3_STATUS   0x0e

Definition at line 102 of file 3c515.c.

RX_BYTES_MASK

#define RX_BYTES_MASK   (unsigned short) (0x07ff)

Definition at line 103 of file 3c515.c.

vp

#define vp   NIC_FAKE_BSS_PTR ( struct corkscrew_private )

Definition at line 239 of file 3c515.c.

Enumeration Type Documentation

corkscrew_cmd

enum corkscrew_cmd

Enumerator
TotalReset
SelectWindow
StartCoax
RxDisable
RxEnable
RxReset
UpStall
UpUnstall
DownStall
DownUnstall
RxDiscard
TxEnable
TxDisable
TxReset
FakeIntr
AckIntr
SetIntrEnb
SetStatusEnb
SetRxFilter
SetRxThreshold
SetTxThreshold
SetTxStart
StartDMAUp
StartDMADown
StatsEnable
StatsDisable
StopCoax

Definition at line 105 of file 3c515.c.

                   {
        TotalReset = 0 << 11, SelectWindow = 1 << 11, StartCoax = 2 << 11,
        RxDisable = 3 << 11, RxEnable = 4 << 11, RxReset = 5 << 11,
        UpStall = 6 << 11, UpUnstall = (6 << 11) + 1,
        DownStall = (6 << 11) + 2, DownUnstall = (6 << 11) + 3,
        RxDiscard = 8 << 11, TxEnable = 9 << 11, TxDisable =
            10 << 11, TxReset = 11 << 11,
        FakeIntr = 12 << 11, AckIntr = 13 << 11, SetIntrEnb = 14 << 11,
        SetStatusEnb = 15 << 11, SetRxFilter = 16 << 11, SetRxThreshold =
            17 << 11,
        SetTxThreshold = 18 << 11, SetTxStart = 19 << 11,
        StartDMAUp = 20 << 11, StartDMADown = (20 << 11) + 1, StatsEnable =
            21 << 11,
        StatsDisable = 22 << 11, StopCoax = 23 << 11,
};

RxFilter

enum RxFilter

Enumerator
RxStation
RxMulticast
RxBroadcast
RxProm

Definition at line 122 of file 3c515.c.

              {
        RxStation = 1, RxMulticast = 2, RxBroadcast = 4, RxProm = 8
};

corkscrew_status

enum corkscrew_status

Enumerator
IntLatch
AdapterFailure
TxComplete
TxAvailable
RxComplete
RxEarly
IntReq
StatsFull
DMADone
DownComplete
UpComplete
DMAInProgress
CmdInProgress

Definition at line 127 of file 3c515.c.

                      {
        IntLatch = 0x0001, AdapterFailure = 0x0002, TxComplete = 0x0004,
        TxAvailable = 0x0008, RxComplete = 0x0010, RxEarly = 0x0020,
        IntReq = 0x0040, StatsFull = 0x0080,
        DMADone = 1 << 8, DownComplete = 1 << 9, UpComplete = 1 << 10,
        DMAInProgress = 1 << 11,        /* DMA controller is still busy. */
        CmdInProgress = 1 << 12,        /* EL3_CMD is still busy. */
};

Window1

enum Window1

Enumerator
TX_FIFO
RX_FIFO
RxErrors
RxStatus
Timer
TxStatus
TxFree

Definition at line 138 of file 3c515.c.

             {
        TX_FIFO = 0x10, RX_FIFO = 0x10, RxErrors = 0x14,
        RxStatus = 0x18, Timer = 0x1A, TxStatus = 0x1B,
        TxFree = 0x1C,          /* Remaining free bytes in Tx buffer. */
};

Window0

enum Window0

Enumerator
Wn0IRQ
Wn0EepromCmd
Wn0EepromData

Definition at line 143 of file 3c515.c.

             {
        Wn0IRQ = 0x08,
#if defined(CORKSCREW)
        Wn0EepromCmd = 0x200A,  /* Corkscrew EEPROM command register. */
        Wn0EepromData = 0x200C, /* Corkscrew EEPROM results register. */
#else
        Wn0EepromCmd = 10,      /* Window 0: EEPROM command register. */
        Wn0EepromData = 12,     /* Window 0: EEPROM results register. */
#endif
};

Win0_EEPROM_bits

enum Win0_EEPROM_bits

Enumerator
EEPROM_Read
EEPROM_WRITE
EEPROM_ERASE
EEPROM_EWENB
EEPROM_EWDIS

Definition at line 153 of file 3c515.c.

                      {
        EEPROM_Read = 0x80, EEPROM_WRITE = 0x40, EEPROM_ERASE = 0xC0,
        EEPROM_EWENB = 0x30,    /* Enable erasing/writing for 10 msec. */
        EEPROM_EWDIS = 0x00,    /* Disable EWENB before 10 msec timeout. */
};

Window3

enum Window3

Enumerator
Wn3_Config
Wn3_MAC_Ctrl
Wn3_Options

Definition at line 159 of file 3c515.c.

             {                  /* Window 3: MAC/config bits. */
        Wn3_Config = 0, Wn3_MAC_Ctrl = 6, Wn3_Options = 8,
};

Window4

enum Window4

Enumerator
Wn4_NetDiag
Wn4_Media

Definition at line 174 of file 3c515.c.

             {
        Wn4_NetDiag = 6, Wn4_Media = 10,        /* Window 4: Xcvr/media bits. */
};

Win4_Media_bits

enum Win4_Media_bits

Enumerator
Media_SQE
Media_10TP
Media_Lnk
Media_LnkBeat

Definition at line 177 of file 3c515.c.

                     {
        Media_SQE = 0x0008,     /* Enable SQE error counting for AUI. */
        Media_10TP = 0x00C0,    /* Enable link beat and jabber for 10baseT. */
        Media_Lnk = 0x0080,     /* Enable just link beat for 100TX/100FX. */
        Media_LnkBeat = 0x0800,
};

Window7

enum Window7

Enumerator
Wn7_MasterAddr
Wn7_MasterLen
Wn7_MasterStatus

Definition at line 183 of file 3c515.c.

             {                  /* Window 7: Bus Master control. */
        Wn7_MasterAddr = 0, Wn7_MasterLen = 6, Wn7_MasterStatus = 12,
};

MasterCtrl

enum MasterCtrl

Enumerator
PktStatus
DownListPtr
FragAddr
FragLen
TxFreeThreshold
UpPktStatus
UpListPtr

Definition at line 188 of file 3c515.c.

                {
        PktStatus = 0x400, DownListPtr = 0x404, FragAddr = 0x408, FragLen =
            0x40c,
        TxFreeThreshold = 0x40f, UpPktStatus = 0x410, UpListPtr = 0x418,
};

rx_desc_status

enum rx_desc_status

Enumerator
RxDComplete
RxDError

Definition at line 205 of file 3c515.c.

                    {
        RxDComplete = 0x00008000, RxDError = 0x4000,
        /* See boomerang_rx() for actual error bits */
};

xcvr_types

enum xcvr_types

Enumerator
XCVR_10baseT
XCVR_AUI
XCVR_10baseTOnly
XCVR_10base2
XCVR_100baseTx
XCVR_100baseFx
XCVR_MII
XCVR_Default

Definition at line 244 of file 3c515.c.

                {
        XCVR_10baseT =
            0, XCVR_AUI, XCVR_10baseTOnly, XCVR_10base2, XCVR_100baseTx,
        XCVR_100baseFx, XCVR_MII = 6, XCVR_Default = 8,
};

Function Documentation

FILE_LICENCE()

FILE_LICENCE

(

GPL2_OR_LATER

)

t3c515_wait()

static void t3c515_wait ( unsigned int  nticks )

static

Definition at line 57 of file 3c515.c.

{
        unsigned int to = currticks() + nticks;
        while (currticks() < to)
                /* wait */ ;
}

References currticks().

Referenced by corkscrew_probe1(), and t515_probe().

corkscrew_found_device()

static int corkscrew_found_device ( int  ioaddr, int  irq, int  product_index, int  options, struct nic *  nic  )

static

Definition at line 656 of file 3c515.c.

{
        /* Direct copy from Becker 3c515.c with unnecessary parts removed */
        vp->product_name = "3c515";
        vp->options = options;
        if (options >= 0) {
                vp->media_override =
                    ((options & 7) == 2) ? 0 : options & 7;
                vp->full_duplex = (options & 8) ? 1 : 0;
                vp->bus_master = (options & 16) ? 1 : 0;
        } else {
                vp->media_override = 7;
                vp->full_duplex = 0;
                vp->bus_master = 0;
        }

        corkscrew_probe1(ioaddr, irq, product_index, nic);
        return 0;
}

References corkscrew_probe1(), ioaddr, nic_operations::irq, options, and vp.

Referenced by t515_probe().

corkscrew_probe1()

static int corkscrew_probe1 ( int  ioaddr, int  irq, int product_index  __unused, struct nic *  nic  )

static

Definition at line 678 of file 3c515.c.

{
        unsigned int eeprom[0x40], checksum = 0;        /* EEPROM contents */
        int i;

        printf("3Com %s at 0x%hX, ", vp->product_name, ioaddr);

        /* Read the station address from the EEPROM. */
        EL3WINDOW(0);
        for (i = 0; i < 0x18; i++) {
                short *phys_addr = (short *) nic->node_addr;
                int timer;
                outw(EEPROM_Read + i, ioaddr + Wn0EepromCmd);
                /* Pause for at least 162 us. for the read to take place. */
                for (timer = 4; timer >= 0; timer--) {
                        t3c515_wait(1);
                        if ((inw(ioaddr + Wn0EepromCmd) & 0x0200) == 0)
                                break;
                }
                eeprom[i] = inw(ioaddr + Wn0EepromData);
                DBG ( "Value %d: %hX        ", i, eeprom[i] );
                checksum ^= eeprom[i];
                if (i < 3)
                        phys_addr[i] = htons(eeprom[i]);
        }
        checksum = (checksum ^ (checksum >> 8)) & 0xff;
        if (checksum != 0x00)
                printf(" ***INVALID CHECKSUM 0x%hX*** ", checksum);

        DBG ( "%s", eth_ntoa ( nic->node_addr ) );

        if (eeprom[16] == 0x11c7) {     /* Corkscrew */

        }
        printf(", IRQ %d\n", irq);
        /* Tell them about an invalid IRQ. */
        if ( (irq <= 0 || irq > 15) ) {
                DBG (" *** Warning: this IRQ is unlikely to work! ***\n" );
        }

        {
                char *ram_split[] = { "5:3", "3:1", "1:1", "3:5" };
                union wn3_config config;
                EL3WINDOW(3);
                vp->available_media = inw(ioaddr + Wn3_Options);
                config.i = inl(ioaddr + Wn3_Config);
                DBG ( "  Internal config register is %4.4x, "
                      "transceivers 0x%hX.\n",
                      config.i, inw(ioaddr + Wn3_Options) );
                printf
                    ("  %dK %s-wide RAM %s Rx:Tx split, %s%s interface.\n",
                     8 << config.u.ram_size,
                     config.u.ram_width ? "word" : "byte",
                     ram_split[config.u.ram_split],
                     config.u.autoselect ? "autoselect/" : "",
                     media_tbl[config.u.xcvr].name);
                if_port = config.u.xcvr;
                vp->default_media = config.u.xcvr;
                vp->autoselect = config.u.autoselect;
        }
        if (vp->media_override != 7) {
                printf("  Media override to transceiver type %d (%s).\n",
                       vp->media_override,
                       media_tbl[vp->media_override].name);
                if_port = vp->media_override;
        }

        vp->capabilities = eeprom[16];
        vp->full_bus_master_tx = (vp->capabilities & 0x20) ? 1 : 0;
        /* Rx is broken at 10mbps, so we always disable it. */
        /* vp->full_bus_master_rx = 0; */
        vp->full_bus_master_rx = (vp->capabilities & 0x20) ? 1 : 0;

        return 0;
}

References wn3_config::w3_config_fields::autoselect, checksum, DBG, EEPROM_Read, EL3WINDOW, eth_ntoa(), htons, wn3_config::i, if_port, inl(), inw(), ioaddr, nic_operations::irq, media_tbl, media_table::name, nic::node_addr, outw, printf(), wn3_config::w3_config_fields::ram_size, wn3_config::w3_config_fields::ram_split, wn3_config::w3_config_fields::ram_width, t3c515_wait(), wn3_config::u, vp, Wn0EepromCmd, Wn0EepromData, Wn3_Config, Wn3_Options, and wn3_config::w3_config_fields::xcvr.

Referenced by corkscrew_found_device().

t515_reset()

static void t515_reset ( struct nic *  nic )

static

Definition at line 293 of file 3c515.c.

{
        union wn3_config config;
        int i;

        /* Before initializing select the active media port. */
        EL3WINDOW(3);
        if (vp->full_duplex)
                outb(0x20, nic->ioaddr + Wn3_MAC_Ctrl); /* Set the full-duplex bit. */
        config.i = inl(nic->ioaddr + Wn3_Config);

        if (vp->media_override != 7) {
                DBG ( "Media override to transceiver %d (%s).\n",
                      vp->media_override,
                      media_tbl[vp->media_override].name);
                if_port = vp->media_override;
        } else if (vp->autoselect) {
                /* Find first available media type, starting with 100baseTx. */
                if_port = 4;
                while (!(vp->available_media & media_tbl[if_port].mask))
                        if_port = media_tbl[if_port].next;

                DBG ( "Initial media type %s.\n",
                      media_tbl[if_port].name);
        } else
                if_port = vp->default_media;

        config.u.xcvr = if_port;
        outl(config.i, nic->ioaddr + Wn3_Config);

        DBG ( "corkscrew_open() InternalConfig 0x%hX.\n",
              config.i);

        outw(TxReset, nic->ioaddr + EL3_CMD);
        for (i = 20; i >= 0; i--)
                if (!(inw(nic->ioaddr + EL3_STATUS) & CmdInProgress))
                        break;

        outw(RxReset, nic->ioaddr + EL3_CMD);
        /* Wait a few ticks for the RxReset command to complete. */
        for (i = 20; i >= 0; i--)
                if (!(inw(nic->ioaddr + EL3_STATUS) & CmdInProgress))
                        break;

        outw(SetStatusEnb | 0x00, nic->ioaddr + EL3_CMD);

#ifdef debug_3c515
                EL3WINDOW(4);
                DBG ( "FIXME: fix print for irq, not 9" );
                DBG ( "corkscrew_open() irq %d media status 0x%hX.\n",
                      9, inw(nic->ioaddr + Wn4_Media) );
#endif

        /* Set the station address and mask in window 2 each time opened. */
        EL3WINDOW(2);
        for (i = 0; i < 6; i++)
                outb(nic->node_addr[i], nic->ioaddr + i);
        for (; i < 12; i += 2)
                outw(0, nic->ioaddr + i);

        if (if_port == 3)
                /* Start the thinnet transceiver. We should really wait 50ms... */
                outw(StartCoax, nic->ioaddr + EL3_CMD);
        EL3WINDOW(4);
        outw((inw(nic->ioaddr + Wn4_Media) & ~(Media_10TP | Media_SQE)) |
             media_tbl[if_port].media_bits, nic->ioaddr + Wn4_Media);

        /* Switch to the stats window, and clear all stats by reading. */
/*      outw(StatsDisable, nic->ioaddr + EL3_CMD);*/
        EL3WINDOW(6);
        for (i = 0; i < 10; i++)
                inb(nic->ioaddr + i);
        inw(nic->ioaddr + 10);
        inw(nic->ioaddr + 12);
        /* New: On the Vortex we must also clear the BadSSD counter. */
        EL3WINDOW(4);
        inb(nic->ioaddr + 12);
        /* ..and on the Boomerang we enable the extra statistics bits. */
        outw(0x0040, nic->ioaddr + Wn4_NetDiag);

        /* Switch to register set 7 for normal use. */
        EL3WINDOW(7);

        /* Temporarily left in place.  If these FIXMEs are printed
           it meand that special logic for that card may need to be added
           see Becker's 3c515.c driver */
        if (vp->full_bus_master_rx) {   /* Boomerang bus master. */
                printf("FIXME: Is this if necessary");
                vp->cur_rx = vp->dirty_rx = 0;
                DBG ( "   Filling in the Rx ring.\n" );
                for (i = 0; i < RX_RING_SIZE; i++) {
                        printf("FIXME: Is this if necessary");
                }
        }
        if (vp->full_bus_master_tx) {   /* Boomerang bus master Tx. */
                vp->cur_tx = vp->dirty_tx = 0;
                outb(PKT_BUF_SZ >> 8, nic->ioaddr + TxFreeThreshold);   /* Room for a packet. */
                /* Clear the Tx ring. */
                for (i = 0; i < TX_RING_SIZE; i++)
                        vp->tx_skbuff[i] = NULL;
                outl(0, nic->ioaddr + DownListPtr);
        }
        /* Set receiver mode: presumably accept b-case and phys addr only. */
        outw(SetRxFilter | RxStation | RxMulticast | RxBroadcast | RxProm,
             nic->ioaddr + EL3_CMD);

        outw(RxEnable, nic->ioaddr + EL3_CMD);  /* Enable the receiver. */
        outw(TxEnable, nic->ioaddr + EL3_CMD);  /* Enable transmitter. */
        /* Allow status bits to be seen. */
        outw(SetStatusEnb | AdapterFailure | IntReq | StatsFull |
             (vp->full_bus_master_tx ? DownComplete : TxAvailable) |
             (vp->full_bus_master_rx ? UpComplete : RxComplete) |
             (vp->bus_master ? DMADone : 0), nic->ioaddr + EL3_CMD);
        /* Ack all pending events, and set active indicator mask. */
        outw(AckIntr | IntLatch | TxAvailable | RxEarly | IntReq,
             nic->ioaddr + EL3_CMD);
        outw(SetIntrEnb | IntLatch | TxAvailable | RxComplete | StatsFull
             | (vp->bus_master ? DMADone : 0) | UpComplete | DownComplete,
             nic->ioaddr + EL3_CMD);

}

References AckIntr, AdapterFailure, CmdInProgress, DBG, DMADone, DownComplete, DownListPtr, EL3_CMD, EL3_STATUS, EL3WINDOW, wn3_config::i, if_port, inb(), inl(), IntLatch, IntReq, inw(), nic::ioaddr, media_table::mask, Media_10TP, media_table::media_bits, Media_SQE, media_tbl, media_table::name, name, media_table::next, nic::node_addr, NULL, outb, outl, outw, PKT_BUF_SZ, printf(), RX_RING_SIZE, RxBroadcast, RxComplete, RxEarly, RxEnable, RxMulticast, RxProm, RxReset, RxStation, SetIntrEnb, SetRxFilter, SetStatusEnb, StartCoax, StatsFull, TX_RING_SIZE, TxAvailable, TxEnable, TxFreeThreshold, TxReset, wn3_config::u, UpComplete, vp, Wn3_Config, Wn3_MAC_Ctrl, Wn4_Media, Wn4_NetDiag, and wn3_config::w3_config_fields::xcvr.

Referenced by t515_disable(), and t515_probe().

t515_poll()

static int t515_poll ( struct nic *  nic, int  retrieve  )

static

Definition at line 418 of file 3c515.c.

{
        short status, cst;
        register short rx_fifo;

        cst = inw(nic->ioaddr + EL3_STATUS);

        if ((cst & RxComplete) == 0) {
                /* Ack all pending events, and set active indicator mask. */
                outw(AckIntr | IntLatch | TxAvailable | RxEarly | IntReq,
                     nic->ioaddr + EL3_CMD);
                outw(SetIntrEnb | IntLatch | TxAvailable | RxComplete |
                     StatsFull | (vp->
                                  bus_master ? DMADone : 0) | UpComplete |
                     DownComplete, nic->ioaddr + EL3_CMD);
                return 0;
        }
        status = inw(nic->ioaddr + RxStatus);

        if (status & RxDError) {
                printf("RxDError\n");
                outw(RxDiscard, nic->ioaddr + EL3_CMD);
                return 0;
        }

        rx_fifo = status & RX_BYTES_MASK;
        if (rx_fifo == 0)
                return 0;

        if ( ! retrieve ) return 1;

        DBG ( "[l=%d", rx_fifo );
        insw(nic->ioaddr + RX_FIFO, nic->packet, rx_fifo / 2);
        if (rx_fifo & 1)
                nic->packet[rx_fifo - 1] = inb(nic->ioaddr + RX_FIFO);
        nic->packetlen = rx_fifo;

        while (1) {
                status = inw(nic->ioaddr + RxStatus);
                DBG ( "0x%hX*", status );
                rx_fifo = status & RX_BYTES_MASK;

                if (rx_fifo > 0) {
                        insw(nic->ioaddr + RX_FIFO, nic->packet + nic->packetlen,
                             rx_fifo / 2);
                        if (rx_fifo & 1)
                                nic->packet[nic->packetlen + rx_fifo - 1] =
                                    inb(nic->ioaddr + RX_FIFO);
                        nic->packetlen += rx_fifo;
                        DBG ( "+%d", rx_fifo );
                }
                if ((status & RxComplete) == 0) {
                        DBG ( "=%d", nic->packetlen );
                        break;
                }
                udelay(1000);
        }

        /* acknowledge reception of packet */
        outw(RxDiscard, nic->ioaddr + EL3_CMD);
        while (inw(nic->ioaddr + EL3_STATUS) & CmdInProgress);
#ifdef debug_3c515
        {
                unsigned short type = 0;
                type = (nic->packet[12] << 8) | nic->packet[13];
                if (nic->packet[0] + nic->packet[1] + nic->packet[2] +
                    nic->packet[3] + nic->packet[4] + nic->packet[5] ==
                    0xFF * ETH_ALEN)
                        DBG ( ",t=0x%hX,b]", type );
                else
                        DBG ( ",t=0x%hX]", type );
        }
#endif

        return 1;
}

References AckIntr, CmdInProgress, DBG, DMADone, DownComplete, EL3_CMD, EL3_STATUS, ETH_ALEN, if(), inb(), insw(), IntLatch, IntReq, inw(), nic::ioaddr, outw, nic::packet, nic::packetlen, printf(), RX_BYTES_MASK, RX_FIFO, RxComplete, RxDError, RxDiscard, RxEarly, RxStatus, SetIntrEnb, StatsFull, status, TxAvailable, type, udelay(), UpComplete, and vp.

t515_transmit()

static void t515_transmit ( struct nic *  nic, const char *  d, unsigned int  t, unsigned int  s, const char *  p  )

static

Definition at line 504 of file 3c515.c.

{                               /* Packet */
        register int len;
        int pad;
        int status;

        DBG ( "{l=%d,t=0x%hX}", s + ETH_HLEN, t );

        /* swap bytes of type */
        t = htons(t);

        len = s + ETH_HLEN;     /* actual length of packet */
        pad = padmap[len & 3];

        /*
         * The 3c515 automatically pads short packets to minimum ethernet length,
         * but we drop packets that are too large. Perhaps we should truncate
         * them instead?
         Copied from 3c595.  Is this true for the 3c515?
         */
        if (len + pad > ETH_FRAME_LEN) {
                return;
        }
        /* drop acknowledgements */
        while ((status = inb(nic->ioaddr + TxStatus)) & TxComplete) {
                /*if(status & (TXS_UNDERRUN|0x88|TXS_STATUS_OVERFLOW)) { */
                outw(TxReset, nic->ioaddr + EL3_CMD);
                outw(TxEnable, nic->ioaddr + EL3_CMD);
/*              }                                                          */

                outb(0x0, nic->ioaddr + TxStatus);
        }

        while (inw(nic->ioaddr + TxFree) < len + pad + 4) {
                /* no room in FIFO */
        }

        outw(len, nic->ioaddr + TX_FIFO);
        outw(0x0, nic->ioaddr + TX_FIFO);       /* Second dword meaningless */

        /* write packet */
        outsw(nic->ioaddr + TX_FIFO, d, ETH_ALEN / 2);
        outsw(nic->ioaddr + TX_FIFO, nic->node_addr, ETH_ALEN / 2);
        outw(t, nic->ioaddr + TX_FIFO);
        outsw(nic->ioaddr + TX_FIFO, p, s / 2);

        if (s & 1)
                outb(*(p + s - 1), nic->ioaddr + TX_FIFO);

        while (pad--)
                outb(0, nic->ioaddr + TX_FIFO); /* Padding */

        /* wait for Tx complete */
        while ((inw(nic->ioaddr + EL3_STATUS) & CmdInProgress) != 0);
}

References CmdInProgress, DBG, EL3_CMD, EL3_STATUS, ETH_ALEN, ETH_FRAME_LEN, ETH_HLEN, htons, inb(), inw(), nic::ioaddr, len, nic::node_addr, outb, outsw(), outw, pad, padmap, status, TX_FIFO, TxComplete, TxEnable, TxFree, TxReset, and TxStatus.

t515_disable()

static void t515_disable ( struct nic *  nic, struct isapnp_device *  isapnp  )

static

Definition at line 566 of file 3c515.c.

                                                          {

        t515_reset(nic);

        /* This is a hack.  Since ltsp worked on my
           system without any disable functionality I
           have no way to determine if this works */

        /* Disable the receiver and transmitter. */
        outw(RxDisable, nic->ioaddr + EL3_CMD);
        outw(TxDisable, nic->ioaddr + EL3_CMD);

        if (if_port == XCVR_10base2)
                /* Turn off thinnet power.  Green! */
                outw(StopCoax, nic->ioaddr + EL3_CMD);


        outw(SetIntrEnb | 0x0000, nic->ioaddr + EL3_CMD);

        deactivate_isapnp_device ( isapnp );
        return;
}

References deactivate_isapnp_device(), EL3_CMD, if_port, nic::ioaddr, outw, RxDisable, SetIntrEnb, StopCoax, t515_reset(), TxDisable, and XCVR_10base2.

t515_irq()

static void t515_irq ( struct nic *nic  __unused, irq_action_t action  __unused  )

static

Definition at line 590 of file 3c515.c.

{
  switch ( action ) {
  case DISABLE :
    break;
  case ENABLE :
    break;
  case FORCE :
    break;
  }
}

References DISABLE, ENABLE, and FORCE.

t515_probe()

static int t515_probe ( struct nic *  nic, struct isapnp_device *  isapnp  )

static

Definition at line 614 of file 3c515.c.

                                                                        {

        /* Direct copy from Beckers 3c515.c removing any ISAPNP sections */

        nic->ioaddr = isapnp->ioaddr;
        nic->irqno = isapnp->irqno;
        activate_isapnp_device ( isapnp );

        /* Check the resource configuration for a matching ioaddr. */
        if ((unsigned)(inw(nic->ioaddr + 0x2002) & 0x1f0)
            != (nic->ioaddr & 0x1f0)) {
                DBG ( "3c515 ioaddr mismatch\n" );
                return 0;
        }

        /* Verify by reading the device ID from the EEPROM. */
        {
                int timer;
                outw(EEPROM_Read + 7, nic->ioaddr + Wn0EepromCmd);
                /* Pause for at least 162 us. for the read to take place. */
                for (timer = 4; timer >= 0; timer--) {
                        t3c515_wait(1);
                        if ((inw(nic->ioaddr + Wn0EepromCmd) & 0x0200) == 0)
                                break;
                }
                if (inw(nic->ioaddr + Wn0EepromData) != 0x6d50) {
                        DBG ( "3c515 read incorrect vendor ID from EEPROM" );
                        return 0;
                }

        }
        DBG ( "3c515 Resource configuration register 0x%X, DCR 0x%hX.\n",
              inl(nic->ioaddr + 0x2002), inw(nic->ioaddr + 0x2000) );
        corkscrew_found_device(nic->ioaddr, nic->irqno, CORKSCREW_ID,
                               options, nic);
        
        t515_reset(nic);        
        nic->nic_op     = &t515_operations;
        return 1;
}

References activate_isapnp_device(), corkscrew_found_device(), CORKSCREW_ID, DBG, EEPROM_Read, inl(), inw(), nic::ioaddr, isapnp_device::ioaddr, nic::irqno, isapnp_device::irqno, nic::nic_op, options, outw, t3c515_wait(), t515_operations, t515_reset(), timer, Wn0EepromCmd, and Wn0EepromData.

ISAPNP_DRIVER()

ISAPNP_DRIVER	(	t515_driver	,
		t515_adapters
	)

DRIVER()

DRIVER	(	"3c515"	,
		nic_driver	,
		isapnp_driver	,
		t515_driver	,
		t515_probe	,
		t515_disable	,
		*	vp
	)

ISA_ROM()

ISA_ROM	(	"3c515"	,
		"3c515 Fast EtherLink ISAPnP"
	)

Variable Documentation

if_port

int if_port

static

Definition at line 66 of file 3c515.c.

Referenced by corkscrew_probe1(), t515_disable(), and t515_reset().

media_tbl

struct media_table media_tbl[]

static

Initial value:

= {
        {
        "10baseT", Media_10TP, 0x08, XCVR_10base2, (14 * HZ) / 10}
        , {
        "10Mbs AUI", Media_SQE, 0x20, XCVR_Default, (1 * HZ) / 10}
        , {
        "undefined", 0, 0x80, XCVR_10baseT, 10000}
        , {
        "10base2", 0, 0x10, XCVR_AUI, (1 * HZ) / 10}
        , {
        "100baseTX", Media_Lnk, 0x02, XCVR_100baseFx,
                    (14 * HZ) / 10}
        , {
        "100baseFX", Media_Lnk, 0x04, XCVR_MII, (14 * HZ) / 10}
        , {
        "MII", 0, 0x40, XCVR_10baseT, 3 * HZ}
        , {
        "undefined", 0, 0x01, XCVR_10baseT, 10000}
        , {
        "Default", 0, 0xFF, XCVR_10baseT, 10000}
,}

Referenced by corkscrew_probe1(), and t515_reset().

options

int options = -1

static

Definition at line 286 of file 3c515.c.

Referenced by corkscrew_found_device(), dhcp_create_packet(), dhcp_option(), dhcp_option_offset(), dhcpopt_fetch(), dhcpopt_init(), dhcpopt_store(), dhcpopt_update_used_len(), dhcppkt_init(), dhcppkt_len(), dhcpv6_check_duid(), dhcpv6_iaaddr(), dhcpv6_option(), dhcpv6_register(), dhcpv6_rx(), dhcpv6_status_code(), dhcpv6_tx(), find_dhcp_option_with_encap(), ifec_mdio_setup(), ifec_net_open(), ipv6_check_options(), ndp_register_settings(), nvo_realloc_dhcpopt(), resize_dhcp_option(), set_dhcp_option(), t515_probe(), tcp_rx(), tcp_rx_opts(), and tcp_rx_syn().

padmap

char padmap[]

static

Initial value:

= {
        0, 3, 2, 1
}

Definition at line 498 of file 3c515.c.

Referenced by t515_transmit().

t515_operations

struct nic_operations t515_operations

static

Initial value:

= {
        .connect        = dummy_connect,
        .poll           = t515_poll,
        .transmit       = t515_transmit,
        .irq            = t515_irq,

}

Definition at line 602 of file 3c515.c.

Referenced by t515_probe().

t515_adapters

struct isapnp_device_id t515_adapters[]

static

Initial value:

= {
        { "3c515 (ISAPnP)", ISAPNP_VENDOR('T','C','M'), 0x5051 },
}

Definition at line 755 of file 3c515.c.