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android / platform / external / syslinux / 76d05dc695b06c4e987bb8078f78032441e1430c / . / gpxe / src / drivers / net / pcnet32.c
blob: 223bc1e2b0c90eb4865d5b7a3caf6556593bca6a [file] [log] [blame]
/**************************************************************************
*
* pcnet32.c -- Etherboot device driver for the AMD PCnet32
* Written 2003-2003 by Timothy Legge <tlegge@rogers.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
* Portions of this code based on:
* pcnet32.c: An AMD PCnet32 ethernet driver for linux:
*
* (C) 1996-1999 Thomas Bogendoerfer
* See Linux Driver for full information
*
* The transmit and poll functions were written with reference to:
* lance.c - LANCE NIC driver for Etherboot written by Ken Yap
*
* Linux Driver Version 1.27a, 10.02.2002
*
*
* REVISION HISTORY:
* ================
* v1.0 08-06-2003 timlegge Initial port of Linux driver
* v1.1 08-23-2003 timlegge Add multicast support
* v1.2 01-17-2004 timlegge Initial driver output cleanup
* v1.3 03-29-2004 timlegge More driver cleanup
*
* Indent Options: indent -kr -i8
***************************************************************************/
FILE_LICENCE ( GPL2_OR_LATER );
#include "etherboot.h"
#include "nic.h"
#include <gpxe/pci.h>
#include <gpxe/ethernet.h>
#include "mii.h"
/* void hex_dump(const char *data, const unsigned int len); */
/* Etherboot Specific definations */
#define drv_version "v1.3"
#define drv_date "03-29-2004"
static u32 ioaddr; /* Globally used for the card's io address */
static struct nic_operations pcnet32_operations;
#ifdef EDEBUG
#define dprintf(x) printf x
#else
#define dprintf(x)
#endif
/* Condensed operations for readability. */
#define virt_to_le32desc(addr) cpu_to_le32(virt_to_bus(addr))
#define le32desc_to_virt(addr) bus_to_virt(le32_to_cpu(addr))
/* End Etherboot Specific */
static int cards_found = 0 /* __initdata */ ;
#ifdef REMOVE
/* FIXME: Remove these they are probably pointless */
/*
* VLB I/O addresses
*/
static unsigned int pcnet32_portlist[] /*__initdata */ =
{ 0x300, 0x320, 0x340, 0x360, 0 };
static int pcnet32_debug = 1;
static int tx_start = 1; /* Mapping -- 0:20, 1:64, 2:128, 3:~220 (depends on chip vers) */
static int pcnet32vlb; /* check for VLB cards ? */
static struct net_device *pcnet32_dev;
static int max_interrupt_work = 80;
static int rx_copybreak = 200;
#endif
#define PCNET32_PORT_AUI 0x00
#define PCNET32_PORT_10BT 0x01
#define PCNET32_PORT_GPSI 0x02
#define PCNET32_PORT_MII 0x03
#define PCNET32_PORT_PORTSEL 0x03
#define PCNET32_PORT_ASEL 0x04
#define PCNET32_PORT_100 0x40
#define PCNET32_PORT_FD 0x80
#define PCNET32_DMA_MASK 0xffffffff
/*
* table to translate option values from tulip
* to internal options
*/
static unsigned char options_mapping[] = {
PCNET32_PORT_ASEL, /* 0 Auto-select */
PCNET32_PORT_AUI, /* 1 BNC/AUI */
PCNET32_PORT_AUI, /* 2 AUI/BNC */
PCNET32_PORT_ASEL, /* 3 not supported */
PCNET32_PORT_10BT | PCNET32_PORT_FD, /* 4 10baseT-FD */
PCNET32_PORT_ASEL, /* 5 not supported */
PCNET32_PORT_ASEL, /* 6 not supported */
PCNET32_PORT_ASEL, /* 7 not supported */
PCNET32_PORT_ASEL, /* 8 not supported */
PCNET32_PORT_MII, /* 9 MII 10baseT */
PCNET32_PORT_MII | PCNET32_PORT_FD, /* 10 MII 10baseT-FD */
PCNET32_PORT_MII, /* 11 MII (autosel) */
PCNET32_PORT_10BT, /* 12 10BaseT */
PCNET32_PORT_MII | PCNET32_PORT_100, /* 13 MII 100BaseTx */
PCNET32_PORT_MII | PCNET32_PORT_100 | PCNET32_PORT_FD, /* 14 MII 100BaseTx-FD */
PCNET32_PORT_ASEL /* 15 not supported */
};
#define MAX_UNITS 8 /* More are supported, limit only on options */
static int options[MAX_UNITS];
static int full_duplex[MAX_UNITS];
/*
* Theory of Operation
*
* This driver uses the same software structure as the normal lance
* driver. So look for a verbose description in lance.c. The differences
* to the normal lance driver is the use of the 32bit mode of PCnet32
* and PCnetPCI chips. Because these chips are 32bit chips, there is no
* 16MB limitation and we don't need bounce buffers.
*/
/*
* Set the number of Tx and Rx buffers, using Log_2(# buffers).
* Reasonable default values are 4 Tx buffers, and 16 Rx buffers.
* That translates to 2 (4 == 2^^2) and 4 (16 == 2^^4).
*/
#ifndef PCNET32_LOG_TX_BUFFERS
#define PCNET32_LOG_TX_BUFFERS 1
#define PCNET32_LOG_RX_BUFFERS 2
#endif
#define TX_RING_SIZE (1 << (PCNET32_LOG_TX_BUFFERS))
#define TX_RING_MOD_MASK (TX_RING_SIZE - 1)
/* FIXME: Fix this to allow multiple tx_ring descriptors */
#define TX_RING_LEN_BITS 0x0000 /*PCNET32_LOG_TX_BUFFERS) << 12) */
#define RX_RING_SIZE (1 << (PCNET32_LOG_RX_BUFFERS))
#define RX_RING_MOD_MASK (RX_RING_SIZE - 1)
#define RX_RING_LEN_BITS ((PCNET32_LOG_RX_BUFFERS) << 4)
#define PKT_BUF_SZ 1544
/* Offsets from base I/O address. */
#define PCNET32_WIO_RDP 0x10
#define PCNET32_WIO_RAP 0x12
#define PCNET32_WIO_RESET 0x14
#define PCNET32_WIO_BDP 0x16
#define PCNET32_DWIO_RDP 0x10
#define PCNET32_DWIO_RAP 0x14
#define PCNET32_DWIO_RESET 0x18
#define PCNET32_DWIO_BDP 0x1C
#define PCNET32_TOTAL_SIZE 0x20
/* The PCNET32 Rx and Tx ring descriptors. */
struct pcnet32_rx_head {
u32 base;
s16 buf_length;
s16 status;
u32 msg_length;
u32 reserved;
};
struct pcnet32_tx_head {
u32 base;
s16 length;
s16 status;
u32 misc;
u32 reserved;
};
/* The PCNET32 32-Bit initialization block, described in databook. */
struct pcnet32_init_block {
u16 mode;
u16 tlen_rlen;
u8 phys_addr[6];
u16 reserved;
u32 filter[2];
/* Receive and transmit ring base, along with extra bits. */
u32 rx_ring;
u32 tx_ring;
};
/* PCnet32 access functions */
struct pcnet32_access {
u16(*read_csr) (unsigned long, int);
void (*write_csr) (unsigned long, int, u16);
u16(*read_bcr) (unsigned long, int);
void (*write_bcr) (unsigned long, int, u16);
u16(*read_rap) (unsigned long);
void (*write_rap) (unsigned long, u16);
void (*reset) (unsigned long);
};
/* Define the TX and RX Descriptors and Rings */
struct {
struct pcnet32_tx_head tx_ring[TX_RING_SIZE]
__attribute__ ((aligned(16)));
struct pcnet32_rx_head rx_ring[RX_RING_SIZE]
__attribute__ ((aligned(16)));
unsigned char txb[TX_RING_SIZE][PKT_BUF_SZ];
unsigned char rxb[RX_RING_SIZE][PKT_BUF_SZ];
} pcnet32_bufs __shared;
/*
* The first three fields of pcnet32_private are read by the ethernet device
* so we allocate the structure should be allocated by pci_alloc_consistent().
*/
#define MII_CNT 4
struct pcnet32_private {
struct pcnet32_init_block init_block;
struct pci_dev *pci_dev; /* Pointer to the associated pci device structure */
const char *name;
/* The saved address of a sent-in-place packet/buffer, for skfree(). */
struct sk_buff *tx_skbuff[TX_RING_SIZE];
struct sk_buff *rx_skbuff[RX_RING_SIZE];
struct pcnet32_access a;
unsigned int cur_rx, cur_tx; /* The next free ring entry */
char tx_full;
int options;
int shared_irq:1, /* shared irq possible */
ltint:1, /* enable TxDone-intr inhibitor */
dxsuflo:1, /* disable transmit stop on uflo */
mii:1; /* mii port available */
struct mii_if_info mii_if;
unsigned char phys[MII_CNT];
struct net_device *next;
int full_duplex:1;
} lpx;
static struct pcnet32_private *lp;
static int mdio_read(struct nic *nic __unused, int phy_id, int reg_num);
#if 0
static void mdio_write(struct nic *nic __unused, int phy_id, int reg_num,
int val);
#endif
enum pci_flags_bit {
PCI_USES_IO = 1, PCI_USES_MEM = 2, PCI_USES_MASTER = 4,
PCI_ADDR0 = 0x10 << 0, PCI_ADDR1 = 0x10 << 1, PCI_ADDR2 =
0x10 << 2, PCI_ADDR3 = 0x10 << 3,
};
static u16 pcnet32_wio_read_csr(unsigned long addr, int index)
{
outw(index, addr + PCNET32_WIO_RAP);
return inw(addr + PCNET32_WIO_RDP);
}
static void pcnet32_wio_write_csr(unsigned long addr, int index, u16 val)
{
outw(index, addr + PCNET32_WIO_RAP);
outw(val, addr + PCNET32_WIO_RDP);
}
static u16 pcnet32_wio_read_bcr(unsigned long addr, int index)
{
outw(index, addr + PCNET32_WIO_RAP);
return inw(addr + PCNET32_WIO_BDP);
}
static void pcnet32_wio_write_bcr(unsigned long addr, int index, u16 val)
{
outw(index, addr + PCNET32_WIO_RAP);
outw(val, addr + PCNET32_WIO_BDP);
}
static u16 pcnet32_wio_read_rap(unsigned long addr)
{
return inw(addr + PCNET32_WIO_RAP);
}
static void pcnet32_wio_write_rap(unsigned long addr, u16 val)
{
outw(val, addr + PCNET32_WIO_RAP);
}
static void pcnet32_wio_reset(unsigned long addr)
{
inw(addr + PCNET32_WIO_RESET);
}
static int pcnet32_wio_check(unsigned long addr)
{
outw(88, addr + PCNET32_WIO_RAP);
return (inw(addr + PCNET32_WIO_RAP) == 88);
}
static struct pcnet32_access pcnet32_wio = {
read_csr:pcnet32_wio_read_csr,
write_csr:pcnet32_wio_write_csr,
read_bcr:pcnet32_wio_read_bcr,
write_bcr:pcnet32_wio_write_bcr,
read_rap:pcnet32_wio_read_rap,
write_rap:pcnet32_wio_write_rap,
reset:pcnet32_wio_reset
};
static u16 pcnet32_dwio_read_csr(unsigned long addr, int index)
{
outl(index, addr + PCNET32_DWIO_RAP);
return (inl(addr + PCNET32_DWIO_RDP) & 0xffff);
}
static void pcnet32_dwio_write_csr(unsigned long addr, int index, u16 val)
{
outl(index, addr + PCNET32_DWIO_RAP);
outl(val, addr + PCNET32_DWIO_RDP);
}
static u16 pcnet32_dwio_read_bcr(unsigned long addr, int index)
{
outl(index, addr + PCNET32_DWIO_RAP);
return (inl(addr + PCNET32_DWIO_BDP) & 0xffff);
}
static void pcnet32_dwio_write_bcr(unsigned long addr, int index, u16 val)
{
outl(index, addr + PCNET32_DWIO_RAP);
outl(val, addr + PCNET32_DWIO_BDP);
}
static u16 pcnet32_dwio_read_rap(unsigned long addr)
{
return (inl(addr + PCNET32_DWIO_RAP) & 0xffff);
}
static void pcnet32_dwio_write_rap(unsigned long addr, u16 val)
{
outl(val, addr + PCNET32_DWIO_RAP);
}
static void pcnet32_dwio_reset(unsigned long addr)
{
inl(addr + PCNET32_DWIO_RESET);
}
static int pcnet32_dwio_check(unsigned long addr)
{
outl(88, addr + PCNET32_DWIO_RAP);
return ((inl(addr + PCNET32_DWIO_RAP) & 0xffff) == 88);
}
static struct pcnet32_access pcnet32_dwio = {
read_csr:pcnet32_dwio_read_csr,
write_csr:pcnet32_dwio_write_csr,
read_bcr:pcnet32_dwio_read_bcr,
write_bcr:pcnet32_dwio_write_bcr,
read_rap:pcnet32_dwio_read_rap,
write_rap:pcnet32_dwio_write_rap,
reset:pcnet32_dwio_reset
};
/* Initialize the PCNET32 Rx and Tx rings. */
static int pcnet32_init_ring(struct nic *nic)
{
int i;
lp->tx_full = 0;
lp->cur_rx = lp->cur_tx = 0;
for (i = 0; i < RX_RING_SIZE; i++) {
pcnet32_bufs.rx_ring[i].base =
virt_to_le32desc(&pcnet32_bufs.rxb[i]);
pcnet32_bufs.rx_ring[i].buf_length = le16_to_cpu(-PKT_BUF_SZ);
pcnet32_bufs.rx_ring[i].status = le16_to_cpu(0x8000);
}
/* The Tx buffer address is filled in as needed, but we do need to clear
the upper ownership bit. */
for (i = 0; i < TX_RING_SIZE; i++) {
pcnet32_bufs.tx_ring[i].base = 0;
pcnet32_bufs.tx_ring[i].status = 0;
}
lp->init_block.tlen_rlen =
le16_to_cpu(TX_RING_LEN_BITS | RX_RING_LEN_BITS);
for (i = 0; i < 6; i++)
lp->init_block.phys_addr[i] = nic->node_addr[i];
lp->init_block.rx_ring = virt_to_le32desc(&pcnet32_bufs.rx_ring[0]);
lp->init_block.tx_ring = virt_to_le32desc(&pcnet32_bufs.tx_ring[0]);
return 0;
}
/**************************************************************************
RESET - Reset adapter
***************************************************************************/
static void pcnet32_reset(struct nic *nic)
{
/* put the card in its initial state */
u16 val;
int i;
/* Reset the PCNET32 */
lp->a.reset(ioaddr);
/* switch pcnet32 to 32bit mode */
lp->a.write_bcr(ioaddr, 20, 2);
/* set/reset autoselect bit */
val = lp->a.read_bcr(ioaddr, 2) & ~2;
if (lp->options & PCNET32_PORT_ASEL)
val |= 2;
lp->a.write_bcr(ioaddr, 2, val);
/* handle full duplex setting */
if (lp->full_duplex) {
val = lp->a.read_bcr(ioaddr, 9) & ~3;
if (lp->options & PCNET32_PORT_FD) {
val |= 1;
if (lp->options ==
(PCNET32_PORT_FD | PCNET32_PORT_AUI))
val |= 2;
} else if (lp->options & PCNET32_PORT_ASEL) {
/* workaround of xSeries250, turn on for 79C975 only */
i = ((lp->a.
read_csr(ioaddr,
88) | (lp->a.read_csr(ioaddr,
89) << 16)) >>
12) & 0xffff;
if (i == 0x2627)
val |= 3;
}
lp->a.write_bcr(ioaddr, 9, val);
}
/* set/reset GPSI bit in test register */
val = lp->a.read_csr(ioaddr, 124) & ~0x10;
if ((lp->options & PCNET32_PORT_PORTSEL) == PCNET32_PORT_GPSI)
val |= 0x10;
lp->a.write_csr(ioaddr, 124, val);
if (lp->mii && !(lp->options & PCNET32_PORT_ASEL)) {
val = lp->a.read_bcr(ioaddr, 32) & ~0x38; /* disable Auto Negotiation, set 10Mpbs, HD */
if (lp->options & PCNET32_PORT_FD)
val |= 0x10;
if (lp->options & PCNET32_PORT_100)
val |= 0x08;
lp->a.write_bcr(ioaddr, 32, val);
} else {
if (lp->options & PCNET32_PORT_ASEL) { /* enable auto negotiate, setup, disable fd */
val = lp->a.read_bcr(ioaddr, 32) & ~0x98;
val |= 0x20;
lp->a.write_bcr(ioaddr, 32, val);
}
}
#ifdef DO_DXSUFLO
if (lp->dxsuflo) { /* Disable transmit stop on underflow */
val = lp->a.read_csr(ioaddr, 3);
val |= 0x40;
lp->a.write_csr(ioaddr, 3, val);
}
#endif
if (1)
{
//disable interrupts
val = lp->a.read_csr(ioaddr, 3);
val = val
| (1 << 14) //BABLM intr disabled
| (1 << 12) //MISSM missed frame mask intr disabled
| (1 << 10) //RINTM receive intr disabled
| (1 << 9) //TINTM transmit intr disabled
| (1 << 8) //IDONM init done intr disabled
;
lp->a.write_csr(ioaddr, 3, val);
}
if (lp->ltint) { /* Enable TxDone-intr inhibitor */
val = lp->a.read_csr(ioaddr, 5);
val |= (1 << 14);
lp->a.write_csr(ioaddr, 5, val);
}
lp->init_block.mode =
le16_to_cpu((lp->options & PCNET32_PORT_PORTSEL) << 7);
lp->init_block.filter[0] = 0xffffffff;
lp->init_block.filter[1] = 0xffffffff;
pcnet32_init_ring(nic);
/* Re-initialize the PCNET32, and start it when done. */
lp->a.write_csr(ioaddr, 1,
(virt_to_bus(&lp->init_block)) & 0xffff);
lp->a.write_csr(ioaddr, 2, (virt_to_bus(&lp->init_block)) >> 16);
lp->a.write_csr(ioaddr, 4, 0x0915);
lp->a.write_csr(ioaddr, 0, 0x0001);
i = 0;
while (i++ < 100)
if (lp->a.read_csr(ioaddr, 0) & 0x0100)
break;
/*
* We used to clear the InitDone bit, 0x0100, here but Mark Stockton
* reports that doing so triggers a bug in the '974.
*/
lp->a.write_csr(ioaddr, 0, 0x0042);
dprintf(("pcnet32 open, csr0 %hX.\n", lp->a.read_csr(ioaddr, 0)));
}
/**************************************************************************
POLL - Wait for a frame
***************************************************************************/
static int pcnet32_poll(struct nic *nic __unused, int retrieve)
{
/* return true if there's an ethernet packet ready to read */
/* nic->packet should contain data on return */
/* nic->packetlen should contain length of data */
signed char status;
int entry;
entry = lp->cur_rx & RX_RING_MOD_MASK;
status = (le16_to_cpu(pcnet32_bufs.rx_ring[entry].status) >> 8);
if (status < 0)
return 0;
if ( ! retrieve ) return 1;
if (status == 0x03) {
nic->packetlen =
(le32_to_cpu(pcnet32_bufs.rx_ring[entry].msg_length)
& 0xfff) - 4;
memcpy(nic->packet, &pcnet32_bufs.rxb[entry], nic->packetlen);
/* Andrew Boyd of QNX reports that some revs of the 79C765
* clear the buffer length */
pcnet32_bufs.rx_ring[entry].buf_length
= le16_to_cpu(-PKT_BUF_SZ);
/* prime for next receive */
pcnet32_bufs.rx_ring[entry].status |= le16_to_cpu(0x8000);
/* Switch to the next Rx ring buffer */
lp->cur_rx++;
} else {
return 0;
}
return 1;
}
/**************************************************************************
TRANSMIT - Transmit a frame
***************************************************************************/
static void pcnet32_transmit(struct nic *nic __unused, const char *d, /* Destination */
unsigned int t, /* Type */
unsigned int s, /* size */
const char *p)
{ /* Packet */
/* send the packet to destination */
unsigned long time;
u8 *ptxb;
u16 nstype;
u16 status;
int entry = 0; /*lp->cur_tx & TX_RING_MOD_MASK; */
status = 0x8300;
/* point to the current txb incase multiple tx_rings are used */
ptxb = pcnet32_bufs.txb[lp->cur_tx];
/* copy the packet to ring buffer */
memcpy(ptxb, d, ETH_ALEN); /* dst */
memcpy(ptxb + ETH_ALEN, nic->node_addr, ETH_ALEN); /* src */
nstype = htons((u16) t); /* type */
memcpy(ptxb + 2 * ETH_ALEN, (u8 *) & nstype, 2); /* type */
memcpy(ptxb + ETH_HLEN, p, s);
s += ETH_HLEN;
while (s < ETH_ZLEN) /* pad to min length */
ptxb[s++] = '\0';
pcnet32_bufs.tx_ring[entry].length = le16_to_cpu(-s);
pcnet32_bufs.tx_ring[entry].misc = 0x00000000;
pcnet32_bufs.tx_ring[entry].base = (u32) virt_to_le32desc(ptxb);
/* we set the top byte as the very last thing */
pcnet32_bufs.tx_ring[entry].status = le16_to_cpu(status);
/* Trigger an immediate send poll */
lp->a.write_csr(ioaddr, 0, 0x0048);
/* wait for transmit complete */
lp->cur_tx = 0; /* (lp->cur_tx + 1); */
time = currticks() + TICKS_PER_SEC; /* wait one second */
while (currticks() < time &&
((short) le16_to_cpu(pcnet32_bufs.tx_ring[entry].status) < 0));
if ((short) le16_to_cpu(pcnet32_bufs.tx_ring[entry].status) < 0)
printf("PCNET32 timed out on transmit\n");
/* Stop pointing at the current txb
* otherwise the card continues to send the packet */
pcnet32_bufs.tx_ring[entry].base = 0;
}
/**************************************************************************
DISABLE - Turn off ethernet interface
***************************************************************************/
static void pcnet32_disable ( struct nic *nic __unused ) {
/* Stop the PCNET32 here -- it ocassionally polls memory if we don't */
lp->a.write_csr(ioaddr, 0, 0x0004);
/*
* Switch back to 16-bit mode to avoid problems with dumb
* DOS packet driver after a warm reboot
*/
lp->a.write_bcr(ioaddr, 20, 0);
}
/**************************************************************************
IRQ - Enable, Disable, or Force interrupts
***************************************************************************/
static void pcnet32_irq(struct nic *nic __unused, irq_action_t action __unused)
{
switch ( action ) {
case DISABLE :
break;
case ENABLE :
break;
case FORCE :
break;
}
}
/**************************************************************************
PROBE - Look for an adapter, this routine's visible to the outside
You should omit the last argument struct pci_device * for a non-PCI NIC
***************************************************************************/
static int pcnet32_probe ( struct nic *nic, struct pci_device *pci ) {
int i, media;
int fdx, mii, fset, dxsuflo, ltint;
int chip_version;
struct pcnet32_access *a = NULL;
char *chipname;
u8 promaddr[6];
int shared = 1;
if (pci->ioaddr == 0)
return 0;
/* BASE is used throughout to address the card */
ioaddr = pci->ioaddr;
printf("pcnet32.c: Found %s, Vendor=0x%hX Device=0x%hX\n",
pci->driver_name, pci->vendor, pci->device);
nic->irqno = 0;
nic->ioaddr = pci->ioaddr & ~3;
/* reset the chip */
pcnet32_wio_reset(ioaddr);
/* NOTE: 16-bit check is first, otherwise some older PCnet chips fail */
if (pcnet32_wio_read_csr(ioaddr, 0) == 4
&& pcnet32_wio_check(ioaddr)) {
a = &pcnet32_wio;
} else {
pcnet32_dwio_reset(ioaddr);
if (pcnet32_dwio_read_csr(ioaddr, 0) == 4
&& pcnet32_dwio_check(ioaddr)) {
a = &pcnet32_dwio;
} else
return 0;
}
chip_version =
a->read_csr(ioaddr, 88) | (a->read_csr(ioaddr, 89) << 16);
dprintf(("PCnet chip version is 0x%X\n", chip_version));
if ((chip_version & 0xfff) != 0x003)
return 0;
/* initialize variables */
fdx = mii = fset = dxsuflo = ltint = 0;
chip_version = (chip_version >> 12) & 0xffff;
switch (chip_version) {
case 0x2420:
chipname = "PCnet/PCI 79C970"; /* PCI */
break;
case 0x2430:
if (shared)
chipname = "PCnet/PCI 79C970"; /* 970 gives the wrong chip id back */
else
chipname = "PCnet/32 79C965"; /* 486/VL bus */
break;
case 0x2621:
chipname = "PCnet/PCI II 79C970A"; /* PCI */
fdx = 1;
break;
case 0x2623:
chipname = "PCnet/FAST 79C971"; /* PCI */
fdx = 1;
mii = 1;
fset = 1;
ltint = 1;
break;
case 0x2624:
chipname = "PCnet/FAST+ 79C972"; /* PCI */
fdx = 1;
mii = 1;
fset = 1;
break;
case 0x2625:
chipname = "PCnet/FAST III 79C973"; /* PCI */
fdx = 1;
mii = 1;
break;
case 0x2626:
chipname = "PCnet/Home 79C978"; /* PCI */
fdx = 1;
/*
* This is based on specs published at www.amd.com. This section
* assumes that a card with a 79C978 wants to go into 1Mb HomePNA
* mode. The 79C978 can also go into standard ethernet, and there
* probably should be some sort of module option to select the
* mode by which the card should operate
*/
/* switch to home wiring mode */
media = a->read_bcr(ioaddr, 49);
printf("media reset to %#x.\n", media);
a->write_bcr(ioaddr, 49, media);
break;
case 0x2627:
chipname = "PCnet/FAST III 79C975"; /* PCI */
fdx = 1;
mii = 1;
break;
default:
chipname = "UNKNOWN";
printf("PCnet version %#x, no PCnet32 chip.\n",
chip_version);
return 0;
}
/*
* On selected chips turn on the BCR18:NOUFLO bit. This stops transmit
* starting until the packet is loaded. Strike one for reliability, lose
* one for latency - although on PCI this isnt a big loss. Older chips
* have FIFO's smaller than a packet, so you can't do this.
*/
if (fset) {
a->write_bcr(ioaddr, 18,
(a->read_bcr(ioaddr, 18) | 0x0800));
a->write_csr(ioaddr, 80,
(a->read_csr(ioaddr, 80) & 0x0C00) | 0x0c00);
dxsuflo = 1;
ltint = 1;
}
DBG ( "%s at %hX,", chipname, (unsigned int) ioaddr );
/* read PROM address */
for (i = 0; i < 6; i++)
promaddr[i] = inb(ioaddr + i);
/* Update the nic structure with the MAC Address */
for (i = 0; i < ETH_ALEN; i++) {
nic->node_addr[i] = promaddr[i];
}
/* Print out some hardware info */
DBG ( "%s: IO Addr 0x%hX, MAC Addr %s\n ", chipname, (unsigned int) ioaddr,
eth_ntoa ( nic->node_addr ) );
/* Set to pci bus master */
adjust_pci_device(pci);
/* point to private storage */
lp = &lpx;
#if EBDEBUG
if (((chip_version + 1) & 0xfffe) == 0x2624) { /* Version 0x2623 or 0x2624 */
i = a->read_csr(ioaddr, 80) & 0x0C00; /* Check tx_start_pt */
dprintf((" tx_start_pt(0x%hX):", i));
switch (i >> 10) {
case 0:
dprintf((" 20 bytes,"));
break;
case 1:
dprintf((" 64 bytes,"));
break;
case 2:
dprintf((" 128 bytes,"));
break;
case 3:
dprintf(("~220 bytes,"));
break;
}
i = a->read_bcr(ioaddr, 18); /* Check Burst/Bus control */
dprintf((" BCR18(%hX):", i & 0xffff));
if (i & (1 << 5))
dprintf(("BurstWrEn "));
if (i & (1 << 6))
dprintf(("BurstRdEn "));
if (i & (1 << 7))
dprintf(("DWordIO "));
if (i & (1 << 11))
dprintf(("NoUFlow "));
i = a->read_bcr(ioaddr, 25);
dprintf((" SRAMSIZE=0x%hX,", i << 8));
i = a->read_bcr(ioaddr, 26);
dprintf((" SRAM_BND=0x%hX,", i << 8));
i = a->read_bcr(ioaddr, 27);
if (i & (1 << 14))
dprintf(("LowLatRx"));
}
#endif
lp->name = chipname;
lp->shared_irq = shared;
lp->full_duplex = fdx;
lp->dxsuflo = dxsuflo;
lp->ltint = ltint;
lp->mii = mii;
/* FIXME: Fix Options for only one card */
if ((cards_found >= MAX_UNITS)
|| ((unsigned int) options[cards_found] > sizeof(options_mapping)))
lp->options = PCNET32_PORT_ASEL;
else
lp->options = options_mapping[options[cards_found]];
if (fdx && !(lp->options & PCNET32_PORT_ASEL) &&
((cards_found >= MAX_UNITS) || full_duplex[cards_found]))
lp->options |= PCNET32_PORT_FD;
if (!a) {
printf("No access methods\n");
return 0;
}
// lp->a = *a;
// Causes a loader:
// bin/blib.a(pcnet32.o)(.text+0x6b6): In function `pcnet32_probe':
// drivers/net/pcnet32.c:871: undefined reference to `memcpy'
// make: *** [bin/pcnet32.dsk.tmp] Error 1
// So we do:
memcpy ( &lp->a, a, sizeof ( lp->a ) );
// To explicity call memcpy.
/* detect special T1/E1 WAN card by checking for MAC address */
if (nic->node_addr[0] == 0x00 && nic->node_addr[1] == 0xe0
&& nic->node_addr[2] == 0x75)
lp->options = PCNET32_PORT_FD | PCNET32_PORT_GPSI;
lp->init_block.mode = le16_to_cpu(0x0003); /* Disable Rx and Tx. */
lp->init_block.tlen_rlen =
le16_to_cpu(TX_RING_LEN_BITS | RX_RING_LEN_BITS);
for (i = 0; i < 6; i++)
lp->init_block.phys_addr[i] = nic->node_addr[i];
lp->init_block.filter[0] = 0xffffffff;
lp->init_block.filter[1] = 0xffffffff;
lp->init_block.rx_ring = virt_to_bus(&pcnet32_bufs.rx_ring);
lp->init_block.tx_ring = virt_to_bus(&pcnet32_bufs.tx_ring);
/* switch pcnet32 to 32bit mode */
a->write_bcr(ioaddr, 20, 2);
a->write_csr(ioaddr, 1, (virt_to_bus(&lp->init_block)) & 0xffff);
a->write_csr(ioaddr, 2, (virt_to_bus(&lp->init_block)) >> 16);
/*
* To auto-IRQ we enable the initialization-done and DMA error
* interrupts. For ISA boards we get a DMA error, but VLB and PCI
* boards will work.
*/
/* Trigger an initialization just for the interrupt. */
// a->write_csr(ioaddr, 0, 0x41);
// mdelay(1);
cards_found++;
/* point to NIC specific routines */
pcnet32_reset(nic);
if (mii) {
int tmp;
int phy, phy_idx = 0;
u16 mii_lpa;
lp->phys[0] = 1; /* Default Setting */
for (phy = 1; phy < 32 && phy_idx < MII_CNT; phy++) {
int mii_status = mdio_read(nic, phy, MII_BMSR);
if (mii_status != 0xffff && mii_status != 0x0000) {
lp->phys[phy_idx++] = phy;
lp->mii_if.advertising =
mdio_read(nic, phy, MII_ADVERTISE);
if ((mii_status & 0x0040) == 0) {
tmp = phy;
dprintf (("MII PHY found at address %d, status "
"%hX advertising %hX\n", phy, mii_status,
lp->mii_if.advertising));
}
}
}
if (phy_idx == 0)
printf("No MII transceiver found!\n");
lp->mii_if.phy_id = lp->phys[0];
lp->mii_if.advertising =
mdio_read(nic, lp->phys[0], MII_ADVERTISE);
mii_lpa = mdio_read(nic, lp->phys[0], MII_LPA);
lp->mii_if.advertising &= mii_lpa;
if (lp->mii_if.advertising & ADVERTISE_100FULL)
printf("100Mbps Full-Duplex\n");
else if (lp->mii_if.advertising & ADVERTISE_100HALF)
printf("100Mbps Half-Duplex\n");
else if (lp->mii_if.advertising & ADVERTISE_10FULL)
printf("10Mbps Full-Duplex\n");
else if (lp->mii_if.advertising & ADVERTISE_10HALF)
printf("10Mbps Half-Duplex\n");
else
printf("\n");
} else {
/* The older chips are fixed 10Mbps, and some support full duplex,
* although not via autonegotiation, but only via configuration. */
if (fdx)
printf("10Mbps Full-Duplex\n");
else
printf("10Mbps Half-Duplex\n");
}
nic->nic_op = &pcnet32_operations;
return 1;
}
static int mdio_read(struct nic *nic __unused, int phy_id, int reg_num)
{
u16 val_out;
int phyaddr;
if (!lp->mii)
return 0;
phyaddr = lp->a.read_bcr(ioaddr, 33);
lp->a.write_bcr(ioaddr, 33,
((phy_id & 0x1f) << 5) | (reg_num & 0x1f));
val_out = lp->a.read_bcr(ioaddr, 34);
lp->a.write_bcr(ioaddr, 33, phyaddr);
return val_out;
}
#if 0
static void mdio_write(struct nic *nic __unused, int phy_id, int reg_num,
int val)
{
int phyaddr;
if (!lp->mii)
return;
phyaddr = lp->a.read_bcr(ioaddr, 33);
lp->a.write_bcr(ioaddr, 33,
((phy_id & 0x1f) << 5) | (reg_num & 0x1f));
lp->a.write_bcr(ioaddr, 34, val);
lp->a.write_bcr(ioaddr, 33, phyaddr);
}
#endif
static struct nic_operations pcnet32_operations = {
.connect = dummy_connect,
.poll = pcnet32_poll,
.transmit = pcnet32_transmit,
.irq = pcnet32_irq,
};
static struct pci_device_id pcnet32_nics[] = {
PCI_ROM(0x1022, 0x2000, "pcnet32", "AMD PCnet/PCI", 0),
PCI_ROM(0x1022, 0x2625, "pcnetfastiii", "AMD PCNet FAST III", 0),
PCI_ROM(0x1022, 0x2001, "amdhomepna", "AMD PCnet/HomePNA", 0),
};
PCI_DRIVER ( pcnet32_driver, pcnet32_nics, PCI_NO_CLASS );
DRIVER ( "PCNET32/PCI", nic_driver, pci_driver, pcnet32_driver,
pcnet32_probe, pcnet32_disable );
/*
* Local variables:
* c-basic-offset: 8
* c-indent-level: 8
* tab-width: 8
* End:
*/