Linux-Hardware Digest #774, Volume #12 Sun, 30 Apr 00 17:13:08 EDT
Contents:
Netzwerkkarte: MII PHY - this device may not operate correctly (level-one
fnc-0500tx, Winbond 840) ("Gerhard Engler")
----------------------------------------------------------------------------
Reply-To: "Gerhard Engler" <[EMAIL PROTECTED]>
From: "Gerhard Engler" <[EMAIL PROTECTED]>
Crossposted-To:
comp.os.linux.networking,de.comp.os.unix.linux.hardware,de.comp.os.unix.linux.newusers,de.comp.os.unix.networking,hannover.uni.comp.linux,hanse.linux,maus.computer.linux,muc.lists.linux,z-netz.alt.linux
Subject: Netzwerkkarte: MII PHY - this device may not operate correctly (level-one
fnc-0500tx, Winbond 840)
Date: Sun, 30 Apr 2000 22:57:36 +0200
Hallo lieber Leser,
zunächst mal entschuldigung für den Cross-Post-Rundumschlag. Aber ich kämpfe
nun schon seit 2 Wochen mit dem gleichen Problem:
Wie kriege ich meine Netzwerkkarte
Level-One fnc-0500tx
(siehe http://www.level-one.net/german/produkte/fnc-0500tx.htm )
sie arbeitet mit einem Winbond 840-Chip
auf meinem PC (Siemens PCD-5H, P90/64MB Ram) unter Linux (Suse 6.2 Kernel
2.2.10) zum laufen.
Beim Booten des PC´s kommt immer folgende Fehlermeldung:
Setting up network device eth0
winbond-840.c:v0.09 8/20/99 Written by Donald Becker
http://cesdis.gsfc.nasa.gov/linux/drivers/ethercard.html
eth: Winbond W89c840 at 0xc4866c00, 00:00:e8:21:85:59, IRQ 9.
eth: MII PHY not found -- this device may not operate correctly
insmod: Note: /etc/conf.modules is more recent than
/lib/modules/2.2.10/modules.dep
...
Was ist denn das device MII PHY?
Der dazugehörige Treiber wurde gemäß der Anleitung von Donald Becker
kompiliert. Dabei trat keine einzige Fehlermeldung auf. Der Support von
Level-One hat mir einen Treiber zugemailt und antwortet seither nicht mehr.
Muß innerhalb des Treibers vielleicht etwas angepaßt werden?
Zum Thema MII PHY steht im Treiber folgendes:
"0x%4.4x advertising %4.4x.\n",
dev->name, phy, mii_status, np->advertising);
}
}
np->mii_cnt = phy_idx;
if (phy_idx == 0) {
printk(KERN_WARNING "%s: MII PHY not found -- this device may "
"not operate correctly.\n", dev->name);
Vielen Dank für Euere Hilfe!
Gerhard
Wenn sich jemand für den gesammten Treiber interessiert hier die
vollständige Version:
/* winbond-840.c: A Linux PCI network adapter skeleton device driver. */
/*
Written 1998-1999 by Donald Becker.
This software may be used and distributed according to the terms
of the GNU Public License (GPL), incorporated herein by reference.
Drivers based on this code fall under the GPL and must retain
this authorship (implicit copyright) notice.
The author may be reached as [EMAIL PROTECTED], or
USRA Center of Excellence in Space Data and Information Sciences
Code 930.5, Goddard Space Flight Center, Greenbelt MD 20771
Support and updates available at
http://cesdis.gsfc.nasa.gov/linux/drivers/index.html
Do not remove the copyright infomation.
Do not change the version information unless an improvement has been made.
Merely removing my name, as Compex has done in the past, does not count
as an improvement.
*/
static const char *version =
"winbond-840.c:v0.12 9/7/99 Written by Donald Becker\n";
static const char *version1 =
" http://cesdis.gsfc.nasa.gov/linux/drivers/ethercard.html\n";
/*
probe-func: winbond840_probe
config-in: tristate 'Winbond W89c840 Ethernet support' CONFIG_WINBOND_840
c-help-name: Winbond W89c840 PCI Ethernet support
c-help-symbol: CONFIG_WINBOND_840
c-help: This driver is for the Winbond W89c840 chip. It also works with
c-help: the TX9882 chip on the Compex RL100-ATX board.
c-help: More specific information and updates are available from
c-help: http://cesdis.gsfc.nasa.gov/linux/drivers/ethercard.html
*/
/* A few user-configurable values. These may be modified when a driver
module is loaded.*/
static int debug = 1; /* 1 normal messages, 0 quiet .. 7 verbose. */
static int max_interrupt_work = 20;
/* Maximum number of multicast addresses to filter (vs. Rx-all-multicast).
The '840 uses a 64 element hash table based on the Ethernet CRC. */
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 = 0;
/* 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. */
#define TX_RING_SIZE 16
#define TX_QUEUE_LEN 10 /* Limit ring entries actually used. */
#define RX_RING_SIZE 32
/* The presumed FIFO size for working around the Tx-FIFO-overflow bug.
To avoid overflowing we don't queue again until we have room for a
full-size packet.
*/
#define TX_FIFO_SIZE (2048)
#define TX_BUG_FIFO_LIMIT (TX_FIFO_SIZE-1514-16)
/* 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.*/
#if !defined(__OPTIMIZE__) || !defined(__KERNEL__)
#warning You must compile this file with the correct options!
#warning See the last lines of the source file.
#error You must compile this driver with "-O".
#endif
/* Include files, designed to support most kernel versions 2.0.0 and later.
*/
#include <linux/config.h>
#include <linux/version.h>
#ifdef MODULE
#ifdef MODVERSIONS
#include <linux/modversions.h>
#endif
#include <linux/module.h>
#else
#define MOD_INC_USE_COUNT
#define MOD_DEC_USE_COUNT
#endif
#include <linux/kernel.h>
#include <linux/string.h>
#include <linux/timer.h>
#include <linux/errno.h>
#include <linux/ioport.h>
#include <linux/malloc.h>
#include <linux/interrupt.h>
#include <linux/pci.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/skbuff.h>
#include <asm/processor.h> /* Processor type for cache alignment. */
#include <asm/bitops.h>
#include <asm/io.h>
#ifdef HAS_PCI_NETIF
#include "pci-netif.h"
#endif
#if defined(MODULE) && LINUX_VERSION_CODE > 0x20115
MODULE_AUTHOR("Donald Becker <[EMAIL PROTECTED]>");
MODULE_DESCRIPTION("Winbond W89c840 Ethernet driver");
MODULE_PARM(max_interrupt_work, "i");
MODULE_PARM(debug, "i");
MODULE_PARM(rx_copybreak, "i");
MODULE_PARM(multicast_filter_limit, "i");
MODULE_PARM(options, "1-" __MODULE_STRING(MAX_UNITS) "i");
MODULE_PARM(full_duplex, "1-" __MODULE_STRING(MAX_UNITS) "i");
#endif
/* This driver was written to use PCI memory space, however some x86 systems
work only with I/O space accesses. Pass -DUSE_IO_OPS to use PCI I/O
space
accesses instead of memory space. */
#ifdef USE_IO_OPS
#undef readb
#undef readw
#undef readl
#undef writeb
#undef writew
#undef writel
#define readb inb
#define readw inw
#define readl inl
#define writeb outb
#define writew outw
#define writel outl
#endif
/* Kernel compatibility defines, some common to David Hinds' PCMCIA package.
This is only in the support-all-kernels source code. */
#if (LINUX_VERSION_CODE >= 0x20100)
char kernel_version[] = UTS_RELEASE;
#else
#ifndef __alpha__
#define ioremap vremap
#define iounmap vfree
#endif
#endif
#if LINUX_VERSION_CODE < 0x20123
#define test_and_set_bit(val, addr) set_bit(val, addr)
#endif
#if LINUX_VERSION_CODE <= 0x20139
#define net_device_stats enet_statistics
#else
#define NETSTATS_VER2
#endif
#if LINUX_VERSION_CODE < 0x20155 || defined(CARDBUS)
/* Grrrr, the PCI code changed, but did not consider CardBus... */
#include <linux/bios32.h>
#define PCI_SUPPORT_VER1
#else
#define PCI_SUPPORT_VER2
#endif
#if LINUX_VERSION_CODE < 0x20159
#define dev_free_skb(skb) dev_kfree_skb(skb, FREE_WRITE);
#else
#define dev_free_skb(skb) dev_kfree_skb(skb);
#endif
#if ! defined(CAP_NET_ADMIN)
#define capable(CAP_XXX) (suser())
#endif
#if ! defined(HAS_NETIF_QUEUE)
#define netif_wake_queue(dev) mark_bh(NET_BH);
#endif
#if LINUX_VERSION_CODE < 0x2030d
#define net_device device
#endif
/*
Theory of Operation
I. Board Compatibility
This driver is for the Winbond w89c840 chip.
II. Board-specific settings
None.
III. Driver operation
This chip is very similar to the Digital 21*4* "Tulip" family. The first
twelve registers and the descriptor format are nearly identical. Read a
Tulip manual for operational details.
A significant difference is that the multicast filter and station address
are
stored in registers rather than loaded through a pseudo-transmit packet.
Unlike the Tulip, transmit buffers are limited to 1KB. To transmit a
full-sized packet we must use both data buffers in a descriptor. Thus the
driver uses ring mode where descriptors are implicitly sequential in memory,
rather than using the second descriptor address as a chain pointer to
subsequent descriptors.
IV. Notes
If you are going to almost clone a Tulip, why not go all the way and avoid
the need for a new driver?
IVb. References
http://cesdis.gsfc.nasa.gov/linux/misc/100mbps.html
http://cesdis.gsfc.nasa.gov/linux/misc/NWay.html
No public w89c840 datasheet is available.
IVc. Errata
A horrible bug exists in the transmit FIFO. Apparently the chip doesn't
correctly detect a full FIFO, and queuing more than 2048 bytes may result in
silent data corruption.
*/
/*
PCI probe table.
*/
#if ! defined(HAS_PCI_NETIF)
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,
};
struct pci_id_info {
const char *name;
struct match_info {
int pci, pci_mask, subsystem, subsystem_mask;
int revision, revision_mask;
} id;
int pci_flags, io_size;
int drv_flags; /* Driver use, intended as capability flags. */
void *(*probe1)(int pci_bus, int pci_devfn, void *init_dev,
long ioaddr, int irq, int chip_idx, int fnd_cnt);
/* Optional, called for suspend, resume and detach. */
int (*pwr_event)(struct net_device *dev, int event);
};
#endif
static void *w840_probe1(int pci_bus, int devfn, void *init_dev,
long ioaddr, int irq, int chp_idx, int fnd_cnt);
enum chip_capability_flags {CanHaveMII=1, HasBrokenTx=2};
#ifdef USE_IO_OPS
#define W840_FLAGS (PCI_USES_IO | PCI_ADDR0 | PCI_USES_MASTER)
#else
#define W840_FLAGS (PCI_USES_MEM | PCI_ADDR1 | PCI_USES_MASTER)
#endif
static struct pci_id_info pci_tbl[] = {
{"Winbond W89c840", { 0x08401050, 0xffffffff, },
W840_FLAGS, 128, CanHaveMII | HasBrokenTx, w840_probe1},
{"Compex RL100-ATX", { 0x201111F6, 0xffffffff,},
W840_FLAGS, 128, CanHaveMII | HasBrokenTx, w840_probe1},
{0,}, /* 0 terminated list. */
};
/* Offsets to the Command and Status Registers, "CSRs".
While similar to the Tulip, these registers are longword aligned.
Note: It's not useful to define symbolic names for every register bit in
the device. The name can only partially document the semantics and make
the driver longer and more difficult to read.
*/
enum w840_offsets {
PCIBusCfg=0x00, TxStartDemand=0x04, RxStartDemand=0x08,
RxRingPtr=0x0C, TxRingPtr=0x10,
IntrStatus=0x14, NetworkConfig=0x18, IntrEnable=0x1C,
RxMissed=0x20, EECtrl=0x24, MIICtrl=0x24, BootRom=0x28, GPTimer=0x2C,
CurRxDescAddr=0x30, CurRxBufAddr=0x34, /* Debug use */
MulticastFilter0=0x38, MulticastFilter1=0x3C, StationAddr=0x40,
CurTxDescAddr=0x4C, CurTxBufAddr=0x50,
};
/* Bits in the interrupt status/enable registers. */
/* The bits in the Intr Status/Enable registers, mostly interrupt sources.
*/
enum intr_status_bits {
NormalIntr=0x10000, AbnormalIntr=0x8000,
IntrPCIErr=0x2000, TimerInt=0x800,
IntrRxDied=0x100, RxNoBuf=0x80, IntrRxDone=0x40,
TxFIFOUnderflow=0x20, RxErrIntr=0x10,
TxIdle=0x04, IntrTxStopped=0x02, IntrTxDone=0x01,
};
/* Bits in the NetworkConfig register. */
enum rx_mode_bits {
AcceptErr=0x80, AcceptRunt=0x40,
AcceptBroadcast=0x20, AcceptMulticast=0x10,
AcceptAllPhys=0x08, AcceptMyPhys=0x02,
};
enum mii_reg_bits {
MDIO_ShiftClk=0x10000, MDIO_DataIn=0x80000, MDIO_DataOut=0x20000,
MDIO_EnbOutput=0x40000, MDIO_EnbIn = 0x00000,
};
/* The Tulip Rx and Tx buffer descriptors. */
struct w840_rx_desc {
s32 status;
s32 length;
u32 buffer1;
u32 next_desc;
};
struct w840_tx_desc {
s32 status;
s32 length;
u32 buffer1, buffer2; /* We use only buffer 1. */
};
/* Bits in network_desc.status */
enum desc_status_bits {
DescOwn=0x80000000, DescEndRing=0x02000000, DescUseLink=0x01000000,
DescWholePkt=0x60000000, DescStartPkt=0x20000000, DescEndPkt=0x40000000,
DescIntr=0x80000000,
};
struct netdev_private {
/* Descriptor rings first for alignment. */
struct w840_rx_desc rx_ring[RX_RING_SIZE];
struct w840_tx_desc tx_ring[TX_RING_SIZE];
struct net_device *next_module; /* Link for devices of this type. */
const char *product_name;
/* The addresses of receive-in-place skbuffs. */
struct sk_buff* rx_skbuff[RX_RING_SIZE];
/* The saved address of a sent-in-place packet/buffer, for later free(). */
struct sk_buff* tx_skbuff[TX_RING_SIZE];
struct net_device_stats stats;
struct timer_list timer; /* Media monitoring timer. */
/* Frequently used values: keep some adjacent for cache effect. */
int chip_id;
int flags;
unsigned char pci_bus, pci_devfn;
int csr6;
struct w840_rx_desc *rx_head_desc;
unsigned int cur_rx, dirty_rx; /* Producer/consumer ring indices */
unsigned int rx_buf_sz; /* Based on MTU+slack. */
unsigned int cur_tx, dirty_tx;
int tx_q_bytes;
unsigned int tx_full:1; /* The Tx queue is full. */
/* These values are keep track of the transceiver/media in use. */
unsigned int full_duplex:1; /* Full-duplex operation requested. */
unsigned int duplex_lock:1;
unsigned int medialock:1; /* Do not sense media. */
unsigned int default_port:4; /* Last dev->if_port value. */
/* MII transceiver section. */
int mii_cnt; /* MII device addresses. */
u16 advertising; /* NWay media advertisement */
unsigned char phys[2]; /* MII device addresses. */
u32 pad[4]; /* Used for 32-byte alignment */
};
static int eeprom_read(long ioaddr, int location);
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 check_duplex(struct net_device *dev);
static void netdev_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 void intr_handler(int irq, void *dev_instance, struct pt_regs *regs);
static void netdev_error(struct net_device *dev, int intr_status);
static int netdev_rx(struct net_device *dev);
static void netdev_error(struct net_device *dev, int intr_status);
static inline unsigned ether_crc(int length, unsigned char *data);
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 int netdev_close(struct net_device *dev);
/* A list of our installed devices, for removing the driver module. */
static struct net_device *root_net_dev = NULL;
#if ! defined(HAS_PCI_NETIF)
/* Ideally we would detect all network cards in slot order. That would
be best done a central PCI probe dispatch, which wouldn't work
well when dynamically adding drivers. So instead we detect just the
cards we know about in slot order. */
static int netif_pci_probe(struct pci_id_info pci_tbl[], void *init_dev)
{
int cards_found = 0;
int pci_index = 0;
unsigned char pci_bus, pci_device_fn;
if ( ! pcibios_present())
return -ENODEV;
for (;pci_index < 0xff; pci_index++) {
u32 pci_id, pci_subsystem_id;
u16 pci_command, new_command;
u8 pci_revision;
int chip_idx, irq, pci_flags;
long pciaddr;
long ioaddr;
if (pcibios_find_class (PCI_CLASS_NETWORK_ETHERNET << 8, pci_index,
&pci_bus, &pci_device_fn)
!= PCIBIOS_SUCCESSFUL)
break;
pcibios_read_config_dword(pci_bus, pci_device_fn,
PCI_VENDOR_ID, &pci_id);
pcibios_read_config_dword(pci_bus, pci_device_fn,
PCI_SUBSYSTEM_ID, &pci_subsystem_id);
pcibios_read_config_byte (pci_bus, pci_device_fn,
PCI_SUBSYSTEM_ID, &pci_revision);
for (chip_idx = 0; pci_tbl[chip_idx].name; chip_idx++) {
if ((pci_id & pci_tbl[chip_idx].id.pci_mask)
== pci_tbl[chip_idx].id.pci
&& (pci_subsystem_id & pci_tbl[chip_idx].id.subsystem_mask)
== pci_tbl[chip_idx].id.subsystem
&& (pci_revision & pci_tbl[chip_idx].id.revision_mask)
== pci_tbl[chip_idx].id.revision
)
break;
}
if (pci_tbl[chip_idx].id.pci == 0) /* Compiled out! */
continue;
pci_flags = pci_tbl[chip_idx].pci_flags;
{
#if defined(PCI_SUPPORT_VER2)
struct pci_dev *pdev = pci_find_slot(pci_bus, pci_device_fn);
pciaddr = pdev->base_address[pci_flags & PCI_ADDR0 ? 0 : 1];
irq = pdev->irq;
#else
u32 pci_memaddr;
u8 pci_irq_line;
pcibios_read_config_byte(pci_bus, pci_device_fn,
PCI_INTERRUPT_LINE, &pci_irq_line);
pcibios_read_config_dword(pci_bus, pci_device_fn,
pci_flags & PCI_ADDR0 ? PCI_BASE_ADDRESS_0 :
PCI_BASE_ADDRESS_1 , &pci_memaddr);
pciaddr = pci_memaddr;
irq = pci_irq_line;
#endif
}
if (debug > 2)
printk(KERN_INFO "Found %s at PCI address %#lx, IRQ %d.\n",
pci_tbl[chip_idx].name, pciaddr, irq);
if (pciaddr & PCI_BASE_ADDRESS_SPACE_IO) {
ioaddr = pciaddr & PCI_BASE_ADDRESS_IO_MASK;
if (check_region(ioaddr, pci_tbl[chip_idx].io_size))
continue;
} else if ((ioaddr = (long)ioremap(pciaddr & PCI_BASE_ADDRESS_MEM_MASK,
pci_tbl[chip_idx].io_size)) == 0) {
printk(KERN_INFO "Failed to map PCI address %#lx.\n",
pciaddr);
continue;
}
pcibios_read_config_word(pci_bus, pci_device_fn,
PCI_COMMAND, &pci_command);
new_command = pci_command | (pci_tbl[chip_idx].pci_flags & 7);
if (pci_command != new_command) {
printk(KERN_INFO " The PCI BIOS has not enabled the"
" device at %d/%d! Updating PCI command %4.4x->%4.4x.\n",
pci_bus, pci_device_fn, pci_command, new_command);
pcibios_write_config_word(pci_bus, pci_device_fn,
PCI_COMMAND, new_command);
}
init_dev = pci_tbl[chip_idx].probe1(pci_bus, pci_device_fn, init_dev,
ioaddr, irq, chip_idx, cards_found);
if (init_dev && (pci_tbl[chip_idx].pci_flags & PCI_COMMAND_MASTER)) {
u8 pci_latency;
pcibios_read_config_byte(pci_bus, pci_device_fn,
PCI_LATENCY_TIMER, &pci_latency);
if (pci_latency < 32) {
printk(KERN_INFO " PCI latency timer (CFLT) is "
"unreasonably low at %d. Setting to %d clocks.\n",
pci_latency, 32);
pcibios_write_config_byte(pci_bus, pci_device_fn,
PCI_LATENCY_TIMER, 32);
}
}
init_dev = 0;
cards_found++;
}
return cards_found ? 0 : -ENODEV;
}
#endif
static void *w840_probe1(int pci_bus, int devfn, void *init_dev,
long ioaddr, int irq, int chip_idx, int find_cnt)
{
struct net_device *dev;
struct netdev_private *np;
int i, option = find_cnt < MAX_UNITS ? options[find_cnt] : 0;
dev = init_etherdev(init_dev, 0);
printk(KERN_INFO "%s: %s at 0x%lx, ",
dev->name, pci_tbl[chip_idx].name, ioaddr);
/* Warning: broken for big-endian machines. */
for (i = 0; i < 3; i++)
((u16 *)dev->dev_addr)[i] = eeprom_read(ioaddr, i);
for (i = 0; i < 5; i++)
printk("%2.2x:", dev->dev_addr[i]);
printk("%2.2x, IRQ %d.\n", dev->dev_addr[i], irq);
#ifdef USE_IO_OPS
request_region(ioaddr, pci_tbl[chip_idx].io_size, dev->name);
#endif
#if ! defined(final_version) /* Dump the EEPROM contents during development.
*/
if (debug > 4)
for (i = 0; i < 64; i++)
printk("%2.2x%s", eeprom_read(ioaddr, i), i%16 != 15 ? " " : "\n");
#endif
/* Reset the chip to erase previous misconfiguration.
No hold time required! */
writel(0x00000001, ioaddr + PCIBusCfg);
dev->base_addr = ioaddr;
dev->irq = irq;
/* Make certain the descriptor lists are aligned. */
np = (void *)(((long)kmalloc(sizeof(*np), GFP_KERNEL) + 15) & ~15);
memset(np, 0, sizeof(*np));
dev->priv = np;
np->next_module = root_net_dev;
root_net_dev = dev;
np->pci_bus = pci_bus;
np->pci_devfn = devfn;
np->chip_id = chip_idx;
np->flags = pci_tbl[np->chip_id].drv_flags;
if (dev->mem_start)
option = dev->mem_start;
/* The lower four bits are the media type. */
if (option > 0) {
if (option & 0x200)
np->full_duplex = 1;
np->default_port = option & 15;
if (np->default_port)
np->medialock = 1;
}
if (find_cnt < MAX_UNITS && full_duplex[find_cnt] > 0)
np->full_duplex = 1;
if (np->full_duplex)
np->duplex_lock = 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;
if (np->flags & CanHaveMII) {
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;
np->advertising = mdio_read(dev, phy, 4);
printk(KERN_INFO "%s: MII PHY found at address %d, status "
"0x%4.4x advertising %4.4x.\n",
dev->name, phy, mii_status, np->advertising);
}
}
np->mii_cnt = phy_idx;
if (phy_idx == 0) {
printk(KERN_WARNING "%s: MII PHY not found -- this device may "
"not operate correctly.\n", dev->name);
}
}
return dev;
}
/* Read the EEPROM and MII Management Data I/O (MDIO) interfaces. These are
often serial bit streams generated by the host processor.
The example below is for the common 93c46 EEPROM, 64 16 bit words. */
/* Delay between EEPROM clock transitions.
No extra delay is needed with 33Mhz PCI, but future 66Mhz access may need
a delay. Note that pre-2.0.34 kernels had a cache-alignment bug that
made udelay() unreliable.
The old method of using an ISA access as a delay, __SLOW_DOWN_IO__, is
depricated.
*/
#define eeprom_delay(eeaddr) readl(eeaddr)
/* EEPROM_Ctrl bits. */
#define EE_SHIFT_CLK 0x02 /* EEPROM shift clock. */
#define EE_CS 0x01 /* EEPROM chip select. */
#define EE_DATA_WRITE 0x04 /* EEPROM chip data in. */
#define EE_WRITE_0 0x01
#define EE_WRITE_1 0x05
#define EE_DATA_READ 0x08 /* EEPROM chip data out. */
#define EE_ENB (0x4800 | EE_CS)
enum EEPROM_Ctrl_Bits {
EE_ShiftClk=0x02, EE_Write0=0x801, EE_Write1=0x805,
EE_ChipSelect=0x801, EE_DataIn=0x08,
};
/* The EEPROM commands include the alway-set leading bit. */
enum EEPROM_Cmds {
EE_WriteCmd=(5 << 6), EE_ReadCmd=(6 << 6), EE_EraseCmd=(7 << 6),
};
static int eeprom_read(long addr, int location)
{
int i;
int retval = 0;
int ee_addr = addr + EECtrl;
int read_cmd = location | EE_ReadCmd;
writel(EE_ChipSelect, ee_addr);
/* Shift the read command bits out. */
for (i = 10; i >= 0; i--) {
short dataval = (read_cmd & (1 << i)) ? EE_Write1 : EE_Write0;
writel(dataval, ee_addr);
eeprom_delay(ee_addr);
writel(dataval | EE_ShiftClk, ee_addr);
eeprom_delay(ee_addr);
}
writel(EE_ChipSelect, ee_addr);
for (i = 16; i > 0; i--) {
writel(EE_ChipSelect | EE_ShiftClk, ee_addr);
eeprom_delay(ee_addr);
retval = (retval << 1) | ((readl(ee_addr) & EE_DataIn) ? 1 : 0);
writel(EE_ChipSelect, ee_addr);
eeprom_delay(ee_addr);
}
/* Terminate the EEPROM access. */
writel(0, ee_addr);
return retval;
}
/* MII transceiver control section.
Read and write the 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. The minimum timing is usually
met by back-to-back 33Mhz PCI cycles. */
#define mdio_delay(mdio_addr) readl(mdio_addr)
/* Set iff a MII transceiver on any interface requires mdio preamble.
This only set with older tranceivers, so the extra
code size of a per-interface flag is not worthwhile. */
static char mii_preamble_required = 1;
#define MDIO_WRITE0 (MDIO_EnbOutput)
#define MDIO_WRITE1 (MDIO_DataOut | MDIO_EnbOutput)
/* Generate the preamble required for initial synchronization and
a few older transceivers. */
static void mdio_sync(long mdio_addr)
{
int bits = 32;
/* Establish sync by sending at least 32 logic ones. */
while (--bits >= 0) {
writel(MDIO_WRITE1, mdio_addr);
mdio_delay(mdio_addr);
writel(MDIO_WRITE1 | MDIO_ShiftClk, mdio_addr);
mdio_delay(mdio_addr);
}
}
static int mdio_read(struct net_device *dev, int phy_id, int location)
{
long mdio_addr = dev->base_addr + MIICtrl;
int mii_cmd = (0xf6 << 10) | (phy_id << 5) | location;
int i;
int retval = 0;
if (mii_preamble_required)
mdio_sync(mdio_addr);
/* Shift the read command bits out. */
for (i = 15; i >= 0; i--) {
int dataval = (mii_cmd & (1 << i)) ? MDIO_WRITE1 : MDIO_WRITE0;
writel(dataval, mdio_addr);
mdio_delay(mdio_addr);
writel(dataval | MDIO_ShiftClk, mdio_addr);
mdio_delay(mdio_addr);
}
/* Read the two transition, 16 data, and wire-idle bits. */
for (i = 20; i > 0; i--) {
writel(MDIO_EnbIn, mdio_addr);
mdio_delay(mdio_addr);
retval = (retval << 1) | ((readl(mdio_addr) & MDIO_DataIn) ? 1 : 0);
writel(MDIO_EnbIn | MDIO_ShiftClk, mdio_addr);
mdio_delay(mdio_addr);
}
return (retval>>1) & 0xffff;
}
static void mdio_write(struct net_device *dev, int phy_id, int location, int
value)
{
struct netdev_private *np = (struct netdev_private *)dev->priv;
long mdio_addr = dev->base_addr + MIICtrl;
int mii_cmd = (0x5002 << 16) | (phy_id << 23) | (location<<18) | value;
int i;
if (location == 4 && phy_id == np->phys[0])
np->advertising = value;
if (mii_preamble_required)
mdio_sync(mdio_addr);
/* Shift the command bits out. */
for (i = 31; i >= 0; i--) {
int dataval = (mii_cmd & (1 << i)) ? MDIO_WRITE1 : MDIO_WRITE0;
writel(dataval, mdio_addr);
mdio_delay(mdio_addr);
writel(dataval | MDIO_ShiftClk, mdio_addr);
mdio_delay(mdio_addr);
}
/* Clear out extra bits. */
for (i = 2; i > 0; i--) {
writel(MDIO_EnbIn, mdio_addr);
mdio_delay(mdio_addr);
writel(MDIO_EnbIn | MDIO_ShiftClk, mdio_addr);
mdio_delay(mdio_addr);
}
return;
}
static int netdev_open(struct net_device *dev)
{
struct netdev_private *np = (struct netdev_private *)dev->priv;
long ioaddr = dev->base_addr;
int i;
writel(0x00000001, ioaddr + PCIBusCfg); /* Reset */
if (request_irq(dev->irq, &intr_handler, SA_SHIRQ, dev->name, dev))
return -EAGAIN;
if (debug > 1)
printk(KERN_DEBUG "%s: w89c840_open() irq %d.\n",
dev->name, dev->irq);
MOD_INC_USE_COUNT;
init_ring(dev);
writel(virt_to_bus(np->rx_ring), ioaddr + RxRingPtr);
writel(virt_to_bus(np->tx_ring), ioaddr + TxRingPtr);
for (i = 0; i < 6; i++)
writeb(dev->dev_addr[i], ioaddr + StationAddr + i);
/* Initialize other registers. */
/* Configure the PCI bus bursts and FIFO thresholds.
486: Set 8 longword cache alignment, 8 longword burst.
586: Set 16 longword cache alignment, no burst limit.
Cache alignment bits 15:14 Burst length 13:8
0000 <not allowed> 0000 align to cache 0800 8 longwords
4000 8 longwords 0100 1 longword 1000 16 longwords
8000 16 longwords 0200 2 longwords 2000 32 longwords
C000 32 longwords 0400 4 longwords
Wait the specified 50 PCI cycles after a reset by initializing
Tx and Rx queues and the address filter list. */
#if defined(__powerpc__) /* Big-endian */
writel(0x00100080 | 0xE010, ioaddr + PCIBusCfg);
#elif defined(__alpha__)
writel(0xE010, ioaddr + PCIBusCfg);
#elif defined(__i386__)
#if defined(MODULE)
writel(0xE010, ioaddr + PCIBusCfg);
#else
/* When not a module we can work around broken '486 PCI boards. */
#if (LINUX_VERSION_CODE > 0x2014c)
#define x86 boot_cpu_data.x86
#endif
writel((x86 <= 4 ? 0x4810 : 0xE010), ioaddr + PCIBusCfg);
if (x86 <= 4)
printk(KERN_INFO "%s: This is a 386/486 PCI system, setting cache "
"alignment to %x.\n", dev->name,
(x86 <= 4 ? 0x4810 : 0x8010));
#endif
#else
writel(0xE010, ioaddr + PCIBusCfg);
#warning Processor architecture undefined!
#endif
if (dev->if_port == 0)
dev->if_port = np->default_port;
dev->tbusy = 0;
dev->interrupt = 0;
writel(0, dev->base_addr + RxStartDemand);
np->csr6 = 0x20022002;
check_duplex(dev);
set_rx_mode(dev);
dev->start = 1;
/* Clear and Enable interrupts by setting the interrupt mask. */
writel(0x1A0F5, ioaddr + IntrStatus);
writel(0x1A0F5, ioaddr + IntrEnable);
if (debug > 2)
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 = jiffies + 3*HZ;
np->timer.data = (unsigned long)dev;
np->timer.function = &netdev_timer; /* timer handler */
add_timer(&np->timer);
return 0;
}
static void check_duplex(struct net_device *dev)
{
struct netdev_private *np = (struct netdev_private *)dev->priv;
int mii_reg5 = mdio_read(dev, np->phys[0], 5);
int duplex;
if (np->duplex_lock || mii_reg5 == 0xffff)
return;
duplex = (mii_reg5 & 0x0100) || (mii_reg5 & 0x01C0) == 0x0040;
if (np->full_duplex != duplex) {
np->full_duplex = duplex;
if (debug)
printk(KERN_INFO "%s: Setting %s-duplex based on MII #%d link"
" partner capability of %4.4x.\n", dev->name,
duplex ? "full" : "half", np->phys[0], mii_reg5);
np->csr6 &= ~0x200;
np->csr6 |= duplex ? 0x200 : 0;
}
}
static void netdev_timer(unsigned long data)
{
struct net_device *dev = (struct net_device *)data;
struct netdev_private *np = (struct netdev_private *)dev->priv;
long ioaddr = dev->base_addr;
int next_tick = 10*HZ;
int old_csr6 = np->csr6;
if (debug > 2)
printk(KERN_DEBUG "%s: Media selection timer tick, status %8.8x "
"config %8.8x.\n",
dev->name, readl(ioaddr + IntrStatus),
readl(ioaddr + NetworkConfig));
check_duplex(dev);
if (np->csr6 != old_csr6) {
writel(np->csr6 & ~0x0002, ioaddr + NetworkConfig);
writel(np->csr6 | 0x2002, ioaddr + NetworkConfig);
}
np->timer.expires = jiffies + next_tick;
add_timer(&np->timer);
}
static void tx_timeout(struct net_device *dev)
{
struct netdev_private *np = (struct netdev_private *)dev->priv;
long ioaddr = dev->base_addr;
printk(KERN_WARNING "%s: Transmit timed out, status %8.8x,"
" resetting...\n", dev->name, readl(ioaddr + IntrStatus));
#ifndef __alpha__
{
int i;
printk(KERN_DEBUG " Rx ring %8.8x: ", (int)np->rx_ring);
for (i = 0; i < RX_RING_SIZE; i++)
printk(" %8.8x", (unsigned int)np->rx_ring[i].status);
printk("\n"KERN_DEBUG" Tx ring %8.8x: ", (int)np->tx_ring);
for (i = 0; i < TX_RING_SIZE; i++)
printk(" %4.4x", np->tx_ring[i].status);
printk("\n");
}
#endif
/* Perhaps we should reinitialize the hardware here. Just trigger a
Tx demand for now. */
writel(0, dev->base_addr + TxStartDemand);
dev->if_port = 0;
/* Stop and restart the chip's Tx processes . */
dev->trans_start = jiffies;
np->stats.tx_errors++;
return;
}
/* Initialize the Rx and Tx rings, along with various 'dev' bits. */
static void init_ring(struct net_device *dev)
{
struct netdev_private *np = (struct netdev_private *)dev->priv;
int i;
np->tx_full = 0;
np->tx_q_bytes = np->cur_rx = np->cur_tx = 0;
np->dirty_rx = np->dirty_tx = 0;
np->rx_buf_sz = (dev->mtu <= 1500 ? PKT_BUF_SZ : dev->mtu + 32);
np->rx_head_desc = &np->rx_ring[0];
/* Initial all Rx descriptors. */
for (i = 0; i < RX_RING_SIZE; i++) {
np->rx_ring[i].length = np->rx_buf_sz;
np->rx_ring[i].status = 0;
np->rx_ring[i].next_desc = virt_to_bus(&np->rx_ring[i+1]);
np->rx_skbuff[i] = 0;
}
/* Mark the last entry as wrapping the ring. */
np->rx_ring[i-1].length |= DescEndRing;
np->rx_ring[i-1].next_desc = virt_to_bus(&np->rx_ring[0]);
/* Fill in the Rx buffers. Handle allocation failure gracefully. */
for (i = 0; i < RX_RING_SIZE; i++) {
struct sk_buff *skb = dev_alloc_skb(np->rx_buf_sz);
np->rx_skbuff[i] = skb;
if (skb == NULL)
break;
skb->dev = dev; /* Mark as being used by this device. */
np->rx_ring[i].buffer1 = virt_to_bus(skb->tail);
np->rx_ring[i].status = DescOwn | DescIntr;
}
np->dirty_rx = (unsigned int)(i - RX_RING_SIZE);
for (i = 0; i < TX_RING_SIZE; i++) {
np->tx_skbuff[i] = 0;
np->tx_ring[i].status = 0;
}
return;
}
static int start_tx(struct sk_buff *skb, struct net_device *dev)
{
struct netdev_private *np = (struct netdev_private *)dev->priv;
unsigned entry;
/* Block a timer-based transmit from overlapping. This could better be
done with atomic_swap(1, dev->tbusy), but set_bit() works as well. */
if (test_and_set_bit(0, (void*)&dev->tbusy) != 0) {
if (jiffies - dev->trans_start > TX_TIMEOUT)
tx_timeout(dev);
return 1;
}
/* Caution: the write order is important here, set the field
with the "ownership" bits last. */
/* Calculate the next Tx descriptor entry. */
entry = np->cur_tx % TX_RING_SIZE;
np->tx_skbuff[entry] = skb;
np->tx_ring[entry].buffer1 = virt_to_bus(skb->data);
#define one_buffer
#define BPT 1022
#if defined(one_buffer)
np->tx_ring[entry].length = DescWholePkt | skb->len;
if (entry >= TX_RING_SIZE-1) /* Wrap ring */
np->tx_ring[entry].length |= DescIntr | DescEndRing;
np->tx_ring[entry].status = DescOwn;
np->cur_tx++;
#elif defined(two_buffer)
if (skb->len > BPT) {
unsigned int entry1 = ++np->cur_tx % TX_RING_SIZE;
np->tx_ring[entry].length = DescStartPkt | BPT;
np->tx_ring[entry1].length = DescEndPkt | (skb->len - BPT);
np->tx_ring[entry1].buffer1 = virt_to_bus(skb->data) + BPT;
np->tx_ring[entry1].status = DescOwn;
np->tx_ring[entry].status = DescOwn;
if (entry >= TX_RING_SIZE-1)
np->tx_ring[entry].length |= DescIntr|DescEndRing;
else if (entry1 >= TX_RING_SIZE-1)
np->tx_ring[entry1].length |= DescIntr|DescEndRing;
np->cur_tx++;
} else {
np->tx_ring[entry].length = DescWholePkt | skb->len;
if (entry >= TX_RING_SIZE-1) /* Wrap ring */
np->tx_ring[entry].length |= DescIntr | DescEndRing;
np->tx_ring[entry].status = DescOwn;
np->cur_tx++;
}
#elif defined(split_buffer)
{
/* Work around the Tx-FIFO-full bug by splitting our transmit packet
into two pieces, the first which may be loaded without overflowing
the FIFO, and the second which contains the remainder of the
packet. When we get a Tx-done interrupt that frees enough room
in the FIFO we mark the remainder of the packet as loadable.
This has the problem that the Tx descriptors are written both
here and in the interrupt handler.
*/
int buf1size = TX_FIFO_SIZE - np->tx_q_bytes;
int buf2size = skb->len - buf1size;
if (buf2size <= 0) { /* We fit into one descriptor. */
np->tx_ring[entry].length = DescWholePkt | skb->len;
} else { /* We must use two descriptors. */
unsigned int entry2;
np->tx_ring[entry].length = DescIntr | DescStartPkt | buf1size;
if (entry >= TX_RING_SIZE-1) { /* Wrap ring */
np->tx_ring[entry].length |= DescEndRing;
entry2 = 0;
} else
entry2 = entry + 1;
np->cur_tx++;
np->tx_ring[entry2].buffer1 = virt_to_bus(skb->data + buf1size);
np->tx_ring[entry2].length = DescEndPkt | buf2size;
if (entry2 >= TX_RING_SIZE-1) /* Wrap ring */
np->tx_ring[entry2].length |= DescEndRing;
}
np->tx_ring[entry].status = DescOwn;
np->cur_tx++;
}
#endif
np->tx_q_bytes += skb->len;
writel(0, dev->base_addr + TxStartDemand);
/* Work around horrible bug in the chip by marking the queue as full
when we do not have FIFO room for a maximum sized packet. */
if (np->cur_tx - np->dirty_tx > TX_QUEUE_LEN)
np->tx_full = 1;
else if ((np->flags & HasBrokenTx) && np->tx_q_bytes > TX_BUG_FIFO_LIMIT)
np->tx_full = 1;
else
clear_bit(0, (void*)&dev->tbusy); /* Typical path */
dev->trans_start = jiffies;
if (debug > 4) {
printk(KERN_DEBUG "%s: Transmit frame #%d queued in slot %d.\n",
dev->name, np->cur_tx, entry);
}
return 0;
}
/* The interrupt handler does all of the Rx thread work and cleans up
after the Tx thread. */
static void intr_handler(int irq, void *dev_instance, struct pt_regs *rgs)
{
struct net_device *dev = (struct net_device *)dev_instance;
struct netdev_private *np = (struct netdev_private *)dev->priv;
long ioaddr = dev->base_addr;
int work_limit = max_interrupt_work;
#if defined(__i386__)
/* A lock to prevent simultaneous entry bug on Intel SMP machines. */
if (test_and_set_bit(0, (void*)&dev->interrupt)) {
printk(KERN_ERR"%s: SMP simultaneous entry of an interrupt handler.\n",
dev->name);
dev->interrupt = 0; /* Avoid halting machine. */
return;
}
#endif
do {
u32 intr_status = readl(ioaddr + IntrStatus);
/* Acknowledge all of the current interrupt sources ASAP. */
writel(intr_status & 0x001ffff, ioaddr + IntrStatus);
if (debug > 4)
printk(KERN_DEBUG "%s: Interrupt, status %4.4x.\n",
dev->name, intr_status);
if ((intr_status & (NormalIntr|AbnormalIntr)) == 0)
break;
if (intr_status & (IntrRxDone | RxNoBuf))
netdev_rx(dev);
for (; np->cur_tx - np->dirty_tx > 0; np->dirty_tx++) {
int entry = np->dirty_tx % TX_RING_SIZE;
int tx_status = np->tx_ring[entry].status;
if (tx_status < 0)
break;
if (tx_status & 0x8000) { /* There was an error, log it. */
#ifndef final_version
if (debug > 1)
printk(KERN_DEBUG "%s: Transmit error, Tx status %8.8x.\n",
dev->name, tx_status);
#endif
np->stats.tx_errors++;
if (tx_status & 0x0104) np->stats.tx_aborted_errors++;
if (tx_status & 0x0C80) np->stats.tx_carrier_errors++;
if (tx_status & 0x0200) np->stats.tx_window_errors++;
if (tx_status & 0x0002) np->stats.tx_fifo_errors++;
if ((tx_status & 0x0080) && np->full_duplex == 0)
np->stats.tx_heartbeat_errors++;
#ifdef ETHER_STATS
if (tx_status & 0x0100) np->stats.collisions16++;
#endif
} else {
#ifdef ETHER_STATS
if (tx_status & 0x0001) np->stats.tx_deferred++;
#endif
#if LINUX_VERSION_CODE > 0x20127
np->stats.tx_bytes += np->tx_ring[entry].length & 0x7ff;
#endif
np->stats.collisions += (tx_status >> 3) & 15;
np->stats.tx_packets++;
}
/* Free the original skb. */
np->tx_q_bytes -= np->tx_skbuff[entry]->len;
dev_free_skb(np->tx_skbuff[entry]);
np->tx_skbuff[entry] = 0;
}
if (np->tx_full &&
np->cur_tx - np->dirty_tx < TX_QUEUE_LEN - 4
&& np->tx_q_bytes < TX_BUG_FIFO_LIMIT) {
/* The ring is no longer full, clear tbusy. */
np->tx_full = 0;
clear_bit(0, (void*)&dev->tbusy);
netif_wake_queue(dev);
}
/* Abnormal error summary/uncommon events handlers. */
if (intr_status & (AbnormalIntr | TxFIFOUnderflow | IntrPCIErr |
TimerInt | IntrTxStopped))
netdev_error(dev, intr_status);
if (--work_limit < 0) {
printk(KERN_WARNING "%s: Too much work at interrupt, "
"status=0x%4.4x.\n", dev->name, intr_status);
/* Set the timer to re-enable the other interrupts after
10*82usec ticks. */
writel(AbnormalIntr | TimerInt, ioaddr + IntrEnable);
writel(10, ioaddr + GPTimer);
break;
}
} while (1);
if (debug > 3)
printk(KERN_DEBUG "%s: exiting interrupt, status=%#4.4x.\n",
dev->name, readl(ioaddr + IntrStatus));
#if defined(__i386__)
clear_bit(0, (void*)&dev->interrupt);
#else
dev->interrupt = 0;
#endif
return;
}
/* This routine is logically part of the interrupt handler, but separated
for clarity and better register allocation. */
static int netdev_rx(struct net_device *dev)
{
struct netdev_private *np = (struct netdev_private *)dev->priv;
int entry = np->cur_rx % RX_RING_SIZE;
int work_limit = np->dirty_rx + RX_RING_SIZE - np->cur_rx;
if (debug > 4) {
printk(KERN_DEBUG " In netdev_rx(), entry %d status %4.4x.\n",
entry, np->rx_ring[entry].status);
}
/* If EOP is set on the next entry, it's a new packet. Send it up. */
while (np->rx_head_desc->status >= 0) {
struct w840_rx_desc *desc = np->rx_head_desc;
s32 status = desc->status;
if (debug > 4)
printk(KERN_DEBUG " netdev_rx() status was %8.8x.\n",
status);
if (--work_limit < 0)
break;
if ((status & 0x38008300) != 0x0300) {
if ((status & 0x38000300) != 0x0300) {
/* Ingore earlier buffers. */
if ((status & 0xffff) != 0x7fff) {
printk(KERN_WARNING "%s: Oversized Ethernet frame spanned "
"multiple buffers, entry %#x status %4.4x!\n",
dev->name, np->cur_rx, status);
np->stats.rx_length_errors++;
}
} else if (status & 0x8000) {
/* There was a fatal error. */
if (debug > 2)
printk(KERN_DEBUG "%s: Receive error, Rx status %8.8x.\n",
dev->name, status);
np->stats.rx_errors++; /* end of a packet.*/
if (status & 0x0890) np->stats.rx_length_errors++;
if (status & 0x004C) np->stats.rx_frame_errors++;
if (status & 0x0002) np->stats.rx_crc_errors++;
}
} else {
struct sk_buff *skb;
/* Omit the four octet CRC from the length. */
short pkt_len = ((status >> 16) & 0x7ff) - 4;
#ifndef final_version
if (debug > 4)
printk(KERN_DEBUG " netdev_rx() normal Rx pkt length %d"
" status %x.\n", pkt_len, status);
#endif
/* Check if the packet is long enough to accept without copying
to a minimally-sized skbuff. */
if (pkt_len < rx_copybreak
&& (skb = dev_alloc_skb(pkt_len + 2)) != NULL) {
skb->dev = dev;
skb_reserve(skb, 2); /* 16 byte align the IP header */
/* Call copy + cksum if available. */
#if ! defined(__alpha__)
eth_copy_and_sum(skb, bus_to_virt(desc->buffer1),
pkt_len, 0);
skb_put(skb, pkt_len);
#else
memcpy(skb_put(skb, pkt_len),
bus_to_virt(desc->buffer1), pkt_len);
#endif
} else {
char *temp = skb_put(skb = np->rx_skbuff[entry], pkt_len);
np->rx_skbuff[entry] = NULL;
#ifndef final_version /* Remove after testing. */
if (bus_to_virt(desc->buffer1) != temp)
printk(KERN_ERR "%s: Internal fault: The skbuff addresses "
"do not match in netdev_rx: %p vs. %p / %p.\n",
dev->name, bus_to_virt(desc->buffer1),
skb->head, temp);
#endif
}
#ifndef final_version /* Remove after testing. */
/* You will want this info for the initial debug. */
if (debug > 5)
printk(KERN_DEBUG " Rx data %2.2x:%2.2x:%2.2x:%2.2x:%2.2x:"
"%2.2x %2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x %2.2x%2.2x "
"%d.%d.%d.%d.\n",
skb->data[0], skb->data[1], skb->data[2], skb->data[3],
skb->data[4], skb->data[5], skb->data[6], skb->data[7],
skb->data[8], skb->data[9], skb->data[10],
skb->data[11], skb->data[12], skb->data[13],
skb->data[14], skb->data[15], skb->data[16],
skb->data[17]);
#endif
skb->protocol = eth_type_trans(skb, dev);
netif_rx(skb);
dev->last_rx = jiffies;
np->stats.rx_packets++;
#if LINUX_VERSION_CODE > 0x20127
np->stats.rx_bytes += pkt_len;
#endif
}
entry = (++np->cur_rx) % RX_RING_SIZE;
np->rx_head_desc = &np->rx_ring[entry];
}
/* Refill the Rx ring buffers. */
for (; np->cur_rx - np->dirty_rx > 0; np->dirty_rx++) {
struct sk_buff *skb;
entry = np->dirty_rx % RX_RING_SIZE;
if (np->rx_skbuff[entry] == NULL) {
skb = dev_alloc_skb(np->rx_buf_sz);
np->rx_skbuff[entry] = skb;
if (skb == NULL)
break; /* Better luck next round. */
skb->dev = dev; /* Mark as being used by this device. */
np->rx_ring[entry].buffer1 = virt_to_bus(skb->tail);
}
np->rx_ring[entry].status = DescOwn;
}
return 0;
}
static void netdev_error(struct net_device *dev, int intr_status)
{
long ioaddr = dev->base_addr;
struct netdev_private *np = (struct netdev_private *)dev->priv;
if (debug > 2)
printk(KERN_DEBUG "%s: Abnormal event, %8.8x.\n",
dev->name, intr_status);
if (intr_status == 0xffffffff)
return;
if (intr_status & TxFIFOUnderflow) {
np->csr6 += 0x4000; /* Bump up the Tx threshold */
printk(KERN_DEBUG "%s: Tx underflow, increasing threshold to %8.8x.\n",
dev->name, np->csr6);
writel(np->csr6, ioaddr + NetworkConfig);
}
if (intr_status & IntrRxDied) { /* Missed a Rx frame. */
np->stats.rx_errors++;
}
if (intr_status & TimerInt) {
/* Re-enable other interrupts. */
writel(0x1A0F5, ioaddr + IntrEnable);
}
np->stats.rx_missed_errors += readl(ioaddr + RxMissed) & 0xffff;
writel(0, dev->base_addr + RxStartDemand);
}
static struct net_device_stats *get_stats(struct net_device *dev)
{
long ioaddr = dev->base_addr;
struct netdev_private *np = (struct netdev_private *)dev->priv;
/* The chip only need report frame silently dropped. */
if (dev->start)
np->stats.rx_missed_errors += readl(ioaddr + RxMissed) & 0xffff;
return &np->stats;
}
static unsigned const ethernet_polynomial = 0x04c11db7U;
static inline u32 ether_crc(int length, unsigned char *data)
{
int crc = -1;
while(--length >= 0) {
unsigned char current_octet = *data++;
int bit;
for (bit = 0; bit < 8; bit++, current_octet >>= 1) {
crc = (crc << 1) ^
((crc < 0) ^ (current_octet & 1) ? ethernet_polynomial : 0);
}
}
return crc;
}
static void set_rx_mode(struct net_device *dev)
{
struct netdev_private *np = (struct netdev_private *)dev->priv;
long ioaddr = dev->base_addr;
u32 mc_filter[2]; /* Multicast hash filter */
u32 rx_mode;
if (dev->flags & IFF_PROMISC) { /* Set promiscuous. */
/* Unconditionally log net taps. */
printk(KERN_NOTICE "%s: Promiscuous mode enabled.\n", dev->name);
memset(mc_filter, 0xff, sizeof(mc_filter));
rx_mode = AcceptBroadcast | AcceptMulticast | AcceptAllPhys
| AcceptMyPhys;
} else if ((dev->mc_count > multicast_filter_limit)
|| (dev->flags & IFF_ALLMULTI)) {
/* Too many to match, or accept all multicasts. */
memset(mc_filter, 0xff, sizeof(mc_filter));
rx_mode = AcceptBroadcast | AcceptMulticast | AcceptMyPhys;
} else {
struct dev_mc_list *mclist;
int i;
memset(mc_filter, 0, sizeof(mc_filter));
for (i = 0, mclist = dev->mc_list; mclist && i < dev->mc_count;
i++, mclist = mclist->next) {
set_bit((ether_crc(ETH_ALEN, mclist->dmi_addr) >> 26) ^ 0x3F,
mc_filter);
}
rx_mode = AcceptBroadcast | AcceptMulticast | AcceptMyPhys;
}
writel(mc_filter[0], ioaddr + MulticastFilter0);
writel(mc_filter[1], ioaddr + MulticastFilter1);
np->csr6 &= ~0x00F8;
np->csr6 |= rx_mode;
writel(np->csr6, ioaddr + NetworkConfig);
}
static int mii_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
{
u16 *data = (u16 *)&rq->ifr_data;
switch(cmd) {
case SIOCDEVPRIVATE: /* Get the address of the PHY in use. */
data[0] = ((struct netdev_private *)dev->priv)->phys[0] & 0x1f;
/* Fall Through */
case SIOCDEVPRIVATE+1: /* Read the specified MII register. */
data[3] = mdio_read(dev, data[0] & 0x1f, data[1] & 0x1f);
return 0;
case SIOCDEVPRIVATE+2: /* Write the specified MII register */
if (!capable(CAP_NET_ADMIN))
return -EPERM;
mdio_write(dev, data[0] & 0x1f, data[1] & 0x1f, data[2]);
return 0;
default:
return -EOPNOTSUPP;
}
}
static int netdev_close(struct net_device *dev)
{
long ioaddr = dev->base_addr;
struct netdev_private *np = (struct netdev_private *)dev->priv;
int i;
dev->start = 0;
dev->tbusy = 1;
if (debug > 1) {
printk(KERN_DEBUG "%s: Shutting down ethercard, status was %8.8x "
"Config %8.8x.\n", dev->name, readl(ioaddr + IntrStatus),
readl(ioaddr + NetworkConfig));
printk(KERN_DEBUG "%s: Queue pointers were Tx %d / %d, Rx %d / %d.\n",
dev->name, np->cur_tx, np->dirty_tx, np->cur_rx, np->dirty_rx);
}
/* Disable interrupts by clearing the interrupt mask. */
writel(0x0000, ioaddr + IntrEnable);
/* Stop the chip's Tx and Rx processes. */
writel(np->csr6 &= ~0x20FA, ioaddr + NetworkConfig);
del_timer(&np->timer);
if (readl(ioaddr + NetworkConfig) != 0xffffffff)
np->stats.rx_missed_errors += readl(ioaddr + RxMissed) & 0xffff;
#ifdef __i386__
if (debug > 2) {
printk("\n"KERN_DEBUG" Tx ring at %8.8x:\n",
(int)virt_to_bus(np->tx_ring));
for (i = 0; i < TX_RING_SIZE; i++)
printk(" #%d desc. %4.4x %4.4x %8.8x.\n",
i, np->tx_ring[i].length,
np->tx_ring[i].status, np->tx_ring[i].buffer1);
printk("\n"KERN_DEBUG " Rx ring %8.8x:\n",
(int)virt_to_bus(np->rx_ring));
for (i = 0; i < RX_RING_SIZE; i++) {
printk(KERN_DEBUG " #%d desc. %4.4x %4.4x %8.8x\n",
i, np->rx_ring[i].length,
np->rx_ring[i].status, np->rx_ring[i].buffer1);
}
}
#endif /* __i386__ debugging only */
free_irq(dev->irq, dev);
/* Free all the skbuffs in the Rx queue. */
for (i = 0; i < RX_RING_SIZE; i++) {
np->rx_ring[i].status = 0;
if (np->rx_skbuff[i]) {
#if LINUX_VERSION_CODE < 0x20100
np->rx_skbuff[i]->free = 1;
#endif
dev_free_skb(np->rx_skbuff[i]);
}
np->rx_skbuff[i] = 0;
}
for (i = 0; i < TX_RING_SIZE; i++) {
if (np->tx_skbuff[i])
dev_free_skb(np->tx_skbuff[i]);
np->tx_skbuff[i] = 0;
}
MOD_DEC_USE_COUNT;
return 0;
}
#ifdef MODULE
int init_module(void)
{
if (debug) /* Emit version even if no cards detected. */
printk(KERN_INFO "%s" KERN_INFO "%s", version, version1);
return netif_pci_probe(pci_tbl, NULL);
}
void cleanup_module(void)
{
struct net_device *next_dev;
/* No need to check MOD_IN_USE, as sys_delete_module() checks. */
while (root_net_dev) {
next_dev = ((struct netdev_private *)root_net_dev->priv)->next_module;
unregister_netdev(root_net_dev);
#ifdef USE_IO_OPS
release_region(root_net_dev->base_addr, pci_tbl[0].io_size);
#else
iounmap((char *)(root_net_dev->base_addr));
#endif
kfree(root_net_dev);
root_net_dev = next_dev;
}
}
#else
int winbond840_probe(struct net_device *dev)
{
if (pci_etherdev_probe(pci_tbl, dev) < 0)
return -ENODEV;
printk(KERN_INFO "%s" KERN_INFO "%s", version, version1);
return 0;
}
#endif /* MODULE */
/*
* Local variables:
* compile-command:
"gcc -DMODULE -D__KERNEL__ -Wall -Wstrict-prototypes -O6 -c winbond-840.c
[ -f /usr/include/linux/modversions.h ] && echo -DMODVERSIONS`"
* SMP-compile-command:
"gcc -D__SMP__ -DMODULE -D__KERNEL__ -Wall -Wstrict-prototypes -O6 -c
winbond-840.c `[ -f /usr/include/linux/modversions.h ] &&
echo -DMODVERSIONS`"
* simple-compile: "gcc -DMODULE -D__KERNEL__ -O6 -c winbond-840.c"
* c-indent-level: 4
* c-basic-offset: 4
* tab-width: 4
* End:
*/
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