/
fealnx.c
1969 lines (1632 loc) · 53.9 KB
/
fealnx.c
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/*
Written 1998-2000 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.
The author may be reached as becker@scyld.com, or C/O
Scyld Computing Corporation
410 Severn Ave., Suite 210
Annapolis MD 21403
Support information and updates available at
http://www.scyld.com/network/pci-skeleton.html
Linux kernel updates:
Version 2.51, Nov 17, 2001 (jgarzik):
- Add ethtool support
- Replace some MII-related magic numbers with constants
*/
#define DRV_NAME "fealnx"
#define DRV_VERSION "2.52"
#define DRV_RELDATE "Sep-11-2006"
static int debug; /* 1-> print debug message */
static int max_interrupt_work = 20;
/* Maximum number of multicast addresses to filter (vs. Rx-all-multicast). */
static int multicast_filter_limit = 32;
/* Set the copy breakpoint for the copy-only-tiny-frames scheme. */
/* Setting to > 1518 effectively disables this feature. */
static int rx_copybreak;
/* Used to pass the media type, etc. */
/* Both 'options[]' and 'full_duplex[]' should exist for driver */
/* interoperability. */
/* The media type is usually passed in 'options[]'. */
#define MAX_UNITS 8 /* More are supported, limit only on options */
static int options[MAX_UNITS] = { -1, -1, -1, -1, -1, -1, -1, -1 };
static int full_duplex[MAX_UNITS] = { -1, -1, -1, -1, -1, -1, -1, -1 };
/* Operational parameters that are set at compile time. */
/* Keep the ring sizes a power of two for compile efficiency. */
/* The compiler will convert <unsigned>'%'<2^N> into a bit mask. */
/* Making the Tx ring too large decreases the effectiveness of channel */
/* bonding and packet priority. */
/* There are no ill effects from too-large receive rings. */
// 88-12-9 modify,
// #define TX_RING_SIZE 16
// #define RX_RING_SIZE 32
#define TX_RING_SIZE 6
#define RX_RING_SIZE 12
#define TX_TOTAL_SIZE TX_RING_SIZE*sizeof(struct fealnx_desc)
#define RX_TOTAL_SIZE RX_RING_SIZE*sizeof(struct fealnx_desc)
/* Operational parameters that usually are not changed. */
/* Time in jiffies before concluding the transmitter is hung. */
#define TX_TIMEOUT (2*HZ)
#define PKT_BUF_SZ 1536 /* Size of each temporary Rx buffer. */
/* Include files, designed to support most kernel versions 2.0.0 and later. */
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/string.h>
#include <linux/timer.h>
#include <linux/errno.h>
#include <linux/ioport.h>
#include <linux/slab.h>
#include <linux/interrupt.h>
#include <linux/pci.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/skbuff.h>
#include <linux/init.h>
#include <linux/mii.h>
#include <linux/ethtool.h>
#include <linux/crc32.h>
#include <linux/delay.h>
#include <linux/bitops.h>
#include <asm/processor.h> /* Processor type for cache alignment. */
#include <asm/io.h>
#include <asm/uaccess.h>
#include <asm/byteorder.h>
/* These identify the driver base version and may not be removed. */
static char version[] =
KERN_INFO DRV_NAME ".c:v" DRV_VERSION " " DRV_RELDATE "\n";
/* This driver was written to use PCI memory space, however some x86 systems
work only with I/O space accesses. */
#ifndef __alpha__
#define USE_IO_OPS
#endif
/* Kernel compatibility defines, some common to David Hinds' PCMCIA package. */
/* This is only in the support-all-kernels source code. */
#define RUN_AT(x) (jiffies + (x))
MODULE_AUTHOR("Myson or whoever");
MODULE_DESCRIPTION("Myson MTD-8xx 100/10M Ethernet PCI Adapter Driver");
MODULE_LICENSE("GPL");
module_param(max_interrupt_work, int, 0);
module_param(debug, int, 0);
module_param(rx_copybreak, int, 0);
module_param(multicast_filter_limit, int, 0);
module_param_array(options, int, NULL, 0);
module_param_array(full_duplex, int, NULL, 0);
MODULE_PARM_DESC(max_interrupt_work, "fealnx maximum events handled per interrupt");
MODULE_PARM_DESC(debug, "fealnx enable debugging (0-1)");
MODULE_PARM_DESC(rx_copybreak, "fealnx copy breakpoint for copy-only-tiny-frames");
MODULE_PARM_DESC(multicast_filter_limit, "fealnx maximum number of filtered multicast addresses");
MODULE_PARM_DESC(options, "fealnx: Bits 0-3: media type, bit 17: full duplex");
MODULE_PARM_DESC(full_duplex, "fealnx full duplex setting(s) (1)");
enum {
MIN_REGION_SIZE = 136,
};
/* A chip capabilities table, matching the entries in pci_tbl[] above. */
enum chip_capability_flags {
HAS_MII_XCVR,
HAS_CHIP_XCVR,
};
/* 89/6/13 add, */
/* for different PHY */
enum phy_type_flags {
MysonPHY = 1,
AhdocPHY = 2,
SeeqPHY = 3,
MarvellPHY = 4,
Myson981 = 5,
LevelOnePHY = 6,
OtherPHY = 10,
};
struct chip_info {
char *chip_name;
int flags;
};
static const struct chip_info skel_netdrv_tbl[] __devinitdata = {
{ "100/10M Ethernet PCI Adapter", HAS_MII_XCVR },
{ "100/10M Ethernet PCI Adapter", HAS_CHIP_XCVR },
{ "1000/100/10M Ethernet PCI Adapter", HAS_MII_XCVR },
};
/* Offsets to the Command and Status Registers. */
enum fealnx_offsets {
PAR0 = 0x0, /* physical address 0-3 */
PAR1 = 0x04, /* physical address 4-5 */
MAR0 = 0x08, /* multicast address 0-3 */
MAR1 = 0x0C, /* multicast address 4-7 */
FAR0 = 0x10, /* flow-control address 0-3 */
FAR1 = 0x14, /* flow-control address 4-5 */
TCRRCR = 0x18, /* receive & transmit configuration */
BCR = 0x1C, /* bus command */
TXPDR = 0x20, /* transmit polling demand */
RXPDR = 0x24, /* receive polling demand */
RXCWP = 0x28, /* receive current word pointer */
TXLBA = 0x2C, /* transmit list base address */
RXLBA = 0x30, /* receive list base address */
ISR = 0x34, /* interrupt status */
IMR = 0x38, /* interrupt mask */
FTH = 0x3C, /* flow control high/low threshold */
MANAGEMENT = 0x40, /* bootrom/eeprom and mii management */
TALLY = 0x44, /* tally counters for crc and mpa */
TSR = 0x48, /* tally counter for transmit status */
BMCRSR = 0x4c, /* basic mode control and status */
PHYIDENTIFIER = 0x50, /* phy identifier */
ANARANLPAR = 0x54, /* auto-negotiation advertisement and link
partner ability */
ANEROCR = 0x58, /* auto-negotiation expansion and pci conf. */
BPREMRPSR = 0x5c, /* bypass & receive error mask and phy status */
};
/* Bits in the interrupt status/enable registers. */
/* The bits in the Intr Status/Enable registers, mostly interrupt sources. */
enum intr_status_bits {
RFCON = 0x00020000, /* receive flow control xon packet */
RFCOFF = 0x00010000, /* receive flow control xoff packet */
LSCStatus = 0x00008000, /* link status change */
ANCStatus = 0x00004000, /* autonegotiation completed */
FBE = 0x00002000, /* fatal bus error */
FBEMask = 0x00001800, /* mask bit12-11 */
ParityErr = 0x00000000, /* parity error */
TargetErr = 0x00001000, /* target abort */
MasterErr = 0x00000800, /* master error */
TUNF = 0x00000400, /* transmit underflow */
ROVF = 0x00000200, /* receive overflow */
ETI = 0x00000100, /* transmit early int */
ERI = 0x00000080, /* receive early int */
CNTOVF = 0x00000040, /* counter overflow */
RBU = 0x00000020, /* receive buffer unavailable */
TBU = 0x00000010, /* transmit buffer unavilable */
TI = 0x00000008, /* transmit interrupt */
RI = 0x00000004, /* receive interrupt */
RxErr = 0x00000002, /* receive error */
};
/* Bits in the NetworkConfig register, W for writing, R for reading */
/* FIXME: some names are invented by me. Marked with (name?) */
/* If you have docs and know bit names, please fix 'em */
enum rx_mode_bits {
CR_W_ENH = 0x02000000, /* enhanced mode (name?) */
CR_W_FD = 0x00100000, /* full duplex */
CR_W_PS10 = 0x00080000, /* 10 mbit */
CR_W_TXEN = 0x00040000, /* tx enable (name?) */
CR_W_PS1000 = 0x00010000, /* 1000 mbit */
/* CR_W_RXBURSTMASK= 0x00000e00, Im unsure about this */
CR_W_RXMODEMASK = 0x000000e0,
CR_W_PROM = 0x00000080, /* promiscuous mode */
CR_W_AB = 0x00000040, /* accept broadcast */
CR_W_AM = 0x00000020, /* accept mutlicast */
CR_W_ARP = 0x00000008, /* receive runt pkt */
CR_W_ALP = 0x00000004, /* receive long pkt */
CR_W_SEP = 0x00000002, /* receive error pkt */
CR_W_RXEN = 0x00000001, /* rx enable (unicast?) (name?) */
CR_R_TXSTOP = 0x04000000, /* tx stopped (name?) */
CR_R_FD = 0x00100000, /* full duplex detected */
CR_R_PS10 = 0x00080000, /* 10 mbit detected */
CR_R_RXSTOP = 0x00008000, /* rx stopped (name?) */
};
/* The Tulip Rx and Tx buffer descriptors. */
struct fealnx_desc {
s32 status;
s32 control;
u32 buffer;
u32 next_desc;
struct fealnx_desc *next_desc_logical;
struct sk_buff *skbuff;
u32 reserved1;
u32 reserved2;
};
/* Bits in network_desc.status */
enum rx_desc_status_bits {
RXOWN = 0x80000000, /* own bit */
FLNGMASK = 0x0fff0000, /* frame length */
FLNGShift = 16,
MARSTATUS = 0x00004000, /* multicast address received */
BARSTATUS = 0x00002000, /* broadcast address received */
PHYSTATUS = 0x00001000, /* physical address received */
RXFSD = 0x00000800, /* first descriptor */
RXLSD = 0x00000400, /* last descriptor */
ErrorSummary = 0x80, /* error summary */
RUNT = 0x40, /* runt packet received */
LONG = 0x20, /* long packet received */
FAE = 0x10, /* frame align error */
CRC = 0x08, /* crc error */
RXER = 0x04, /* receive error */
};
enum rx_desc_control_bits {
RXIC = 0x00800000, /* interrupt control */
RBSShift = 0,
};
enum tx_desc_status_bits {
TXOWN = 0x80000000, /* own bit */
JABTO = 0x00004000, /* jabber timeout */
CSL = 0x00002000, /* carrier sense lost */
LC = 0x00001000, /* late collision */
EC = 0x00000800, /* excessive collision */
UDF = 0x00000400, /* fifo underflow */
DFR = 0x00000200, /* deferred */
HF = 0x00000100, /* heartbeat fail */
NCRMask = 0x000000ff, /* collision retry count */
NCRShift = 0,
};
enum tx_desc_control_bits {
TXIC = 0x80000000, /* interrupt control */
ETIControl = 0x40000000, /* early transmit interrupt */
TXLD = 0x20000000, /* last descriptor */
TXFD = 0x10000000, /* first descriptor */
CRCEnable = 0x08000000, /* crc control */
PADEnable = 0x04000000, /* padding control */
RetryTxLC = 0x02000000, /* retry late collision */
PKTSMask = 0x3ff800, /* packet size bit21-11 */
PKTSShift = 11,
TBSMask = 0x000007ff, /* transmit buffer bit 10-0 */
TBSShift = 0,
};
/* BootROM/EEPROM/MII Management Register */
#define MASK_MIIR_MII_READ 0x00000000
#define MASK_MIIR_MII_WRITE 0x00000008
#define MASK_MIIR_MII_MDO 0x00000004
#define MASK_MIIR_MII_MDI 0x00000002
#define MASK_MIIR_MII_MDC 0x00000001
/* ST+OP+PHYAD+REGAD+TA */
#define OP_READ 0x6000 /* ST:01+OP:10+PHYAD+REGAD+TA:Z0 */
#define OP_WRITE 0x5002 /* ST:01+OP:01+PHYAD+REGAD+TA:10 */
/* ------------------------------------------------------------------------- */
/* Constants for Myson PHY */
/* ------------------------------------------------------------------------- */
#define MysonPHYID 0xd0000302
/* 89-7-27 add, (begin) */
#define MysonPHYID0 0x0302
#define StatusRegister 18
#define SPEED100 0x0400 // bit10
#define FULLMODE 0x0800 // bit11
/* 89-7-27 add, (end) */
/* ------------------------------------------------------------------------- */
/* Constants for Seeq 80225 PHY */
/* ------------------------------------------------------------------------- */
#define SeeqPHYID0 0x0016
#define MIIRegister18 18
#define SPD_DET_100 0x80
#define DPLX_DET_FULL 0x40
/* ------------------------------------------------------------------------- */
/* Constants for Ahdoc 101 PHY */
/* ------------------------------------------------------------------------- */
#define AhdocPHYID0 0x0022
#define DiagnosticReg 18
#define DPLX_FULL 0x0800
#define Speed_100 0x0400
/* 89/6/13 add, */
/* -------------------------------------------------------------------------- */
/* Constants */
/* -------------------------------------------------------------------------- */
#define MarvellPHYID0 0x0141
#define LevelOnePHYID0 0x0013
#define MII1000BaseTControlReg 9
#define MII1000BaseTStatusReg 10
#define SpecificReg 17
/* for 1000BaseT Control Register */
#define PHYAbletoPerform1000FullDuplex 0x0200
#define PHYAbletoPerform1000HalfDuplex 0x0100
#define PHY1000AbilityMask 0x300
// for phy specific status register, marvell phy.
#define SpeedMask 0x0c000
#define Speed_1000M 0x08000
#define Speed_100M 0x4000
#define Speed_10M 0
#define Full_Duplex 0x2000
// 89/12/29 add, for phy specific status register, levelone phy, (begin)
#define LXT1000_100M 0x08000
#define LXT1000_1000M 0x0c000
#define LXT1000_Full 0x200
// 89/12/29 add, for phy specific status register, levelone phy, (end)
/* for 3-in-1 case, BMCRSR register */
#define LinkIsUp2 0x00040000
/* for PHY */
#define LinkIsUp 0x0004
struct netdev_private {
/* Descriptor rings first for alignment. */
struct fealnx_desc *rx_ring;
struct fealnx_desc *tx_ring;
dma_addr_t rx_ring_dma;
dma_addr_t tx_ring_dma;
spinlock_t lock;
struct net_device_stats stats;
/* Media monitoring timer. */
struct timer_list timer;
/* Reset timer */
struct timer_list reset_timer;
int reset_timer_armed;
unsigned long crvalue_sv;
unsigned long imrvalue_sv;
/* Frequently used values: keep some adjacent for cache effect. */
int flags;
struct pci_dev *pci_dev;
unsigned long crvalue;
unsigned long bcrvalue;
unsigned long imrvalue;
struct fealnx_desc *cur_rx;
struct fealnx_desc *lack_rxbuf;
int really_rx_count;
struct fealnx_desc *cur_tx;
struct fealnx_desc *cur_tx_copy;
int really_tx_count;
int free_tx_count;
unsigned int rx_buf_sz; /* Based on MTU+slack. */
/* These values are keep track of the transceiver/media in use. */
unsigned int linkok;
unsigned int line_speed;
unsigned int duplexmode;
unsigned int default_port:4; /* Last dev->if_port value. */
unsigned int PHYType;
/* MII transceiver section. */
int mii_cnt; /* MII device addresses. */
unsigned char phys[2]; /* MII device addresses. */
struct mii_if_info mii;
void __iomem *mem;
};
static int mdio_read(struct net_device *dev, int phy_id, int location);
static void mdio_write(struct net_device *dev, int phy_id, int location, int value);
static int netdev_open(struct net_device *dev);
static void getlinktype(struct net_device *dev);
static void getlinkstatus(struct net_device *dev);
static void netdev_timer(unsigned long data);
static void reset_timer(unsigned long data);
static void tx_timeout(struct net_device *dev);
static void init_ring(struct net_device *dev);
static int start_tx(struct sk_buff *skb, struct net_device *dev);
static irqreturn_t intr_handler(int irq, void *dev_instance);
static int netdev_rx(struct net_device *dev);
static void set_rx_mode(struct net_device *dev);
static void __set_rx_mode(struct net_device *dev);
static struct net_device_stats *get_stats(struct net_device *dev);
static int mii_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
static const struct ethtool_ops netdev_ethtool_ops;
static int netdev_close(struct net_device *dev);
static void reset_rx_descriptors(struct net_device *dev);
static void reset_tx_descriptors(struct net_device *dev);
static void stop_nic_rx(void __iomem *ioaddr, long crvalue)
{
int delay = 0x1000;
iowrite32(crvalue & ~(CR_W_RXEN), ioaddr + TCRRCR);
while (--delay) {
if ( (ioread32(ioaddr + TCRRCR) & CR_R_RXSTOP) == CR_R_RXSTOP)
break;
}
}
static void stop_nic_rxtx(void __iomem *ioaddr, long crvalue)
{
int delay = 0x1000;
iowrite32(crvalue & ~(CR_W_RXEN+CR_W_TXEN), ioaddr + TCRRCR);
while (--delay) {
if ( (ioread32(ioaddr + TCRRCR) & (CR_R_RXSTOP+CR_R_TXSTOP))
== (CR_R_RXSTOP+CR_R_TXSTOP) )
break;
}
}
static int __devinit fealnx_init_one(struct pci_dev *pdev,
const struct pci_device_id *ent)
{
struct netdev_private *np;
int i, option, err, irq;
static int card_idx = -1;
char boardname[12];
void __iomem *ioaddr;
unsigned long len;
unsigned int chip_id = ent->driver_data;
struct net_device *dev;
void *ring_space;
dma_addr_t ring_dma;
#ifdef USE_IO_OPS
int bar = 0;
#else
int bar = 1;
#endif
DECLARE_MAC_BUF(mac);
/* when built into the kernel, we only print version if device is found */
#ifndef MODULE
static int printed_version;
if (!printed_version++)
printk(version);
#endif
card_idx++;
sprintf(boardname, "fealnx%d", card_idx);
option = card_idx < MAX_UNITS ? options[card_idx] : 0;
i = pci_enable_device(pdev);
if (i) return i;
pci_set_master(pdev);
len = pci_resource_len(pdev, bar);
if (len < MIN_REGION_SIZE) {
dev_err(&pdev->dev,
"region size %ld too small, aborting\n", len);
return -ENODEV;
}
i = pci_request_regions(pdev, boardname);
if (i)
return i;
irq = pdev->irq;
ioaddr = pci_iomap(pdev, bar, len);
if (!ioaddr) {
err = -ENOMEM;
goto err_out_res;
}
dev = alloc_etherdev(sizeof(struct netdev_private));
if (!dev) {
err = -ENOMEM;
goto err_out_unmap;
}
SET_NETDEV_DEV(dev, &pdev->dev);
/* read ethernet id */
for (i = 0; i < 6; ++i)
dev->dev_addr[i] = ioread8(ioaddr + PAR0 + i);
/* Reset the chip to erase previous misconfiguration. */
iowrite32(0x00000001, ioaddr + BCR);
dev->base_addr = (unsigned long)ioaddr;
dev->irq = irq;
/* Make certain the descriptor lists are aligned. */
np = netdev_priv(dev);
np->mem = ioaddr;
spin_lock_init(&np->lock);
np->pci_dev = pdev;
np->flags = skel_netdrv_tbl[chip_id].flags;
pci_set_drvdata(pdev, dev);
np->mii.dev = dev;
np->mii.mdio_read = mdio_read;
np->mii.mdio_write = mdio_write;
np->mii.phy_id_mask = 0x1f;
np->mii.reg_num_mask = 0x1f;
ring_space = pci_alloc_consistent(pdev, RX_TOTAL_SIZE, &ring_dma);
if (!ring_space) {
err = -ENOMEM;
goto err_out_free_dev;
}
np->rx_ring = (struct fealnx_desc *)ring_space;
np->rx_ring_dma = ring_dma;
ring_space = pci_alloc_consistent(pdev, TX_TOTAL_SIZE, &ring_dma);
if (!ring_space) {
err = -ENOMEM;
goto err_out_free_rx;
}
np->tx_ring = (struct fealnx_desc *)ring_space;
np->tx_ring_dma = ring_dma;
/* find the connected MII xcvrs */
if (np->flags == HAS_MII_XCVR) {
int phy, phy_idx = 0;
for (phy = 1; phy < 32 && phy_idx < 4; phy++) {
int mii_status = mdio_read(dev, phy, 1);
if (mii_status != 0xffff && mii_status != 0x0000) {
np->phys[phy_idx++] = phy;
dev_info(&pdev->dev,
"MII PHY found at address %d, status "
"0x%4.4x.\n", phy, mii_status);
/* get phy type */
{
unsigned int data;
data = mdio_read(dev, np->phys[0], 2);
if (data == SeeqPHYID0)
np->PHYType = SeeqPHY;
else if (data == AhdocPHYID0)
np->PHYType = AhdocPHY;
else if (data == MarvellPHYID0)
np->PHYType = MarvellPHY;
else if (data == MysonPHYID0)
np->PHYType = Myson981;
else if (data == LevelOnePHYID0)
np->PHYType = LevelOnePHY;
else
np->PHYType = OtherPHY;
}
}
}
np->mii_cnt = phy_idx;
if (phy_idx == 0)
dev_warn(&pdev->dev,
"MII PHY not found -- this device may "
"not operate correctly.\n");
} else {
np->phys[0] = 32;
/* 89/6/23 add, (begin) */
/* get phy type */
if (ioread32(ioaddr + PHYIDENTIFIER) == MysonPHYID)
np->PHYType = MysonPHY;
else
np->PHYType = OtherPHY;
}
np->mii.phy_id = np->phys[0];
if (dev->mem_start)
option = dev->mem_start;
/* The lower four bits are the media type. */
if (option > 0) {
if (option & 0x200)
np->mii.full_duplex = 1;
np->default_port = option & 15;
}
if (card_idx < MAX_UNITS && full_duplex[card_idx] > 0)
np->mii.full_duplex = full_duplex[card_idx];
if (np->mii.full_duplex) {
dev_info(&pdev->dev, "Media type forced to Full Duplex.\n");
/* 89/6/13 add, (begin) */
// if (np->PHYType==MarvellPHY)
if ((np->PHYType == MarvellPHY) || (np->PHYType == LevelOnePHY)) {
unsigned int data;
data = mdio_read(dev, np->phys[0], 9);
data = (data & 0xfcff) | 0x0200;
mdio_write(dev, np->phys[0], 9, data);
}
/* 89/6/13 add, (end) */
if (np->flags == HAS_MII_XCVR)
mdio_write(dev, np->phys[0], MII_ADVERTISE, ADVERTISE_FULL);
else
iowrite32(ADVERTISE_FULL, ioaddr + ANARANLPAR);
np->mii.force_media = 1;
}
/* The chip-specific entries in the device structure. */
dev->open = &netdev_open;
dev->hard_start_xmit = &start_tx;
dev->stop = &netdev_close;
dev->get_stats = &get_stats;
dev->set_multicast_list = &set_rx_mode;
dev->do_ioctl = &mii_ioctl;
dev->ethtool_ops = &netdev_ethtool_ops;
dev->tx_timeout = &tx_timeout;
dev->watchdog_timeo = TX_TIMEOUT;
err = register_netdev(dev);
if (err)
goto err_out_free_tx;
printk(KERN_INFO "%s: %s at %p, %s, IRQ %d.\n",
dev->name, skel_netdrv_tbl[chip_id].chip_name, ioaddr,
print_mac(mac, dev->dev_addr), irq);
return 0;
err_out_free_tx:
pci_free_consistent(pdev, TX_TOTAL_SIZE, np->tx_ring, np->tx_ring_dma);
err_out_free_rx:
pci_free_consistent(pdev, RX_TOTAL_SIZE, np->rx_ring, np->rx_ring_dma);
err_out_free_dev:
free_netdev(dev);
err_out_unmap:
pci_iounmap(pdev, ioaddr);
err_out_res:
pci_release_regions(pdev);
return err;
}
static void __devexit fealnx_remove_one(struct pci_dev *pdev)
{
struct net_device *dev = pci_get_drvdata(pdev);
if (dev) {
struct netdev_private *np = netdev_priv(dev);
pci_free_consistent(pdev, TX_TOTAL_SIZE, np->tx_ring,
np->tx_ring_dma);
pci_free_consistent(pdev, RX_TOTAL_SIZE, np->rx_ring,
np->rx_ring_dma);
unregister_netdev(dev);
pci_iounmap(pdev, np->mem);
free_netdev(dev);
pci_release_regions(pdev);
pci_set_drvdata(pdev, NULL);
} else
printk(KERN_ERR "fealnx: remove for unknown device\n");
}
static ulong m80x_send_cmd_to_phy(void __iomem *miiport, int opcode, int phyad, int regad)
{
ulong miir;
int i;
unsigned int mask, data;
/* enable MII output */
miir = (ulong) ioread32(miiport);
miir &= 0xfffffff0;
miir |= MASK_MIIR_MII_WRITE + MASK_MIIR_MII_MDO;
/* send 32 1's preamble */
for (i = 0; i < 32; i++) {
/* low MDC; MDO is already high (miir) */
miir &= ~MASK_MIIR_MII_MDC;
iowrite32(miir, miiport);
/* high MDC */
miir |= MASK_MIIR_MII_MDC;
iowrite32(miir, miiport);
}
/* calculate ST+OP+PHYAD+REGAD+TA */
data = opcode | (phyad << 7) | (regad << 2);
/* sent out */
mask = 0x8000;
while (mask) {
/* low MDC, prepare MDO */
miir &= ~(MASK_MIIR_MII_MDC + MASK_MIIR_MII_MDO);
if (mask & data)
miir |= MASK_MIIR_MII_MDO;
iowrite32(miir, miiport);
/* high MDC */
miir |= MASK_MIIR_MII_MDC;
iowrite32(miir, miiport);
udelay(30);
/* next */
mask >>= 1;
if (mask == 0x2 && opcode == OP_READ)
miir &= ~MASK_MIIR_MII_WRITE;
}
return miir;
}
static int mdio_read(struct net_device *dev, int phyad, int regad)
{
struct netdev_private *np = netdev_priv(dev);
void __iomem *miiport = np->mem + MANAGEMENT;
ulong miir;
unsigned int mask, data;
miir = m80x_send_cmd_to_phy(miiport, OP_READ, phyad, regad);
/* read data */
mask = 0x8000;
data = 0;
while (mask) {
/* low MDC */
miir &= ~MASK_MIIR_MII_MDC;
iowrite32(miir, miiport);
/* read MDI */
miir = ioread32(miiport);
if (miir & MASK_MIIR_MII_MDI)
data |= mask;
/* high MDC, and wait */
miir |= MASK_MIIR_MII_MDC;
iowrite32(miir, miiport);
udelay(30);
/* next */
mask >>= 1;
}
/* low MDC */
miir &= ~MASK_MIIR_MII_MDC;
iowrite32(miir, miiport);
return data & 0xffff;
}
static void mdio_write(struct net_device *dev, int phyad, int regad, int data)
{
struct netdev_private *np = netdev_priv(dev);
void __iomem *miiport = np->mem + MANAGEMENT;
ulong miir;
unsigned int mask;
miir = m80x_send_cmd_to_phy(miiport, OP_WRITE, phyad, regad);
/* write data */
mask = 0x8000;
while (mask) {
/* low MDC, prepare MDO */
miir &= ~(MASK_MIIR_MII_MDC + MASK_MIIR_MII_MDO);
if (mask & data)
miir |= MASK_MIIR_MII_MDO;
iowrite32(miir, miiport);
/* high MDC */
miir |= MASK_MIIR_MII_MDC;
iowrite32(miir, miiport);
/* next */
mask >>= 1;
}
/* low MDC */
miir &= ~MASK_MIIR_MII_MDC;
iowrite32(miir, miiport);
}
static int netdev_open(struct net_device *dev)
{
struct netdev_private *np = netdev_priv(dev);
void __iomem *ioaddr = np->mem;
int i;
iowrite32(0x00000001, ioaddr + BCR); /* Reset */
if (request_irq(dev->irq, &intr_handler, IRQF_SHARED, dev->name, dev))
return -EAGAIN;
for (i = 0; i < 3; i++)
iowrite16(((unsigned short*)dev->dev_addr)[i],
ioaddr + PAR0 + i*2);
init_ring(dev);
iowrite32(np->rx_ring_dma, ioaddr + RXLBA);
iowrite32(np->tx_ring_dma, ioaddr + TXLBA);
/* Initialize other registers. */
/* Configure the PCI bus bursts and FIFO thresholds.
486: Set 8 longword burst.
586: no burst limit.
Burst length 5:3
0 0 0 1
0 0 1 4
0 1 0 8
0 1 1 16
1 0 0 32
1 0 1 64
1 1 0 128
1 1 1 256
Wait the specified 50 PCI cycles after a reset by initializing
Tx and Rx queues and the address filter list.
FIXME (Ueimor): optimistic for alpha + posted writes ? */
np->bcrvalue = 0x10; /* little-endian, 8 burst length */
#ifdef __BIG_ENDIAN
np->bcrvalue |= 0x04; /* big-endian */
#endif
#if defined(__i386__) && !defined(MODULE)
if (boot_cpu_data.x86 <= 4)
np->crvalue = 0xa00;
else
#endif
np->crvalue = 0xe00; /* rx 128 burst length */
// 89/12/29 add,
// 90/1/16 modify,
// np->imrvalue=FBE|TUNF|CNTOVF|RBU|TI|RI;
np->imrvalue = TUNF | CNTOVF | RBU | TI | RI;
if (np->pci_dev->device == 0x891) {
np->bcrvalue |= 0x200; /* set PROG bit */
np->crvalue |= CR_W_ENH; /* set enhanced bit */
np->imrvalue |= ETI;
}
iowrite32(np->bcrvalue, ioaddr + BCR);
if (dev->if_port == 0)
dev->if_port = np->default_port;
iowrite32(0, ioaddr + RXPDR);
// 89/9/1 modify,
// np->crvalue = 0x00e40001; /* tx store and forward, tx/rx enable */
np->crvalue |= 0x00e40001; /* tx store and forward, tx/rx enable */
np->mii.full_duplex = np->mii.force_media;
getlinkstatus(dev);
if (np->linkok)
getlinktype(dev);
__set_rx_mode(dev);
netif_start_queue(dev);
/* Clear and Enable interrupts by setting the interrupt mask. */
iowrite32(FBE | TUNF | CNTOVF | RBU | TI | RI, ioaddr + ISR);
iowrite32(np->imrvalue, ioaddr + IMR);
if (debug)
printk(KERN_DEBUG "%s: Done netdev_open().\n", dev->name);
/* Set the timer to check for link beat. */
init_timer(&np->timer);
np->timer.expires = RUN_AT(3 * HZ);
np->timer.data = (unsigned long) dev;
np->timer.function = &netdev_timer;
/* timer handler */
add_timer(&np->timer);
init_timer(&np->reset_timer);
np->reset_timer.data = (unsigned long) dev;
np->reset_timer.function = &reset_timer;
np->reset_timer_armed = 0;
return 0;
}
static void getlinkstatus(struct net_device *dev)
/* function: Routine will read MII Status Register to get link status. */
/* input : dev... pointer to the adapter block. */
/* output : none. */
{
struct netdev_private *np = netdev_priv(dev);
unsigned int i, DelayTime = 0x1000;
np->linkok = 0;
if (np->PHYType == MysonPHY) {
for (i = 0; i < DelayTime; ++i) {
if (ioread32(np->mem + BMCRSR) & LinkIsUp2) {
np->linkok = 1;
return;
}
udelay(100);
}
} else {
for (i = 0; i < DelayTime; ++i) {
if (mdio_read(dev, np->phys[0], MII_BMSR) & BMSR_LSTATUS) {
np->linkok = 1;
return;
}
udelay(100);
}
}
}
static void getlinktype(struct net_device *dev)
{
struct netdev_private *np = netdev_priv(dev);
if (np->PHYType == MysonPHY) { /* 3-in-1 case */
if (ioread32(np->mem + TCRRCR) & CR_R_FD)
np->duplexmode = 2; /* full duplex */
else
np->duplexmode = 1; /* half duplex */
if (ioread32(np->mem + TCRRCR) & CR_R_PS10)
np->line_speed = 1; /* 10M */
else
np->line_speed = 2; /* 100M */
} else {
if (np->PHYType == SeeqPHY) { /* this PHY is SEEQ 80225 */
unsigned int data;
data = mdio_read(dev, np->phys[0], MIIRegister18);
if (data & SPD_DET_100)
np->line_speed = 2; /* 100M */
else
np->line_speed = 1; /* 10M */
if (data & DPLX_DET_FULL)
np->duplexmode = 2; /* full duplex mode */
else
np->duplexmode = 1; /* half duplex mode */
} else if (np->PHYType == AhdocPHY) {
unsigned int data;
data = mdio_read(dev, np->phys[0], DiagnosticReg);
if (data & Speed_100)
np->line_speed = 2; /* 100M */
else
np->line_speed = 1; /* 10M */
if (data & DPLX_FULL)
np->duplexmode = 2; /* full duplex mode */
else
np->duplexmode = 1; /* half duplex mode */
}
/* 89/6/13 add, (begin) */
else if (np->PHYType == MarvellPHY) {