/*
|
Written 1997-1998 by Donald Becker.
|
|
This software may be used and distributed according to the terms
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of the GNU General Public License, incorporated herein by reference.
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This driver is for the 3Com ISA EtherLink XL "Corkscrew" 3c515 ethercard.
|
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The author may be reached as becker@scyld.com, or C/O
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Scyld Computing Corporation
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410 Severn Ave., Suite 210
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Annapolis MD 21403
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|
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2000/2/2- Added support for kernel-level ISAPnP
|
by Stephen Frost <sfrost@snowman.net> and Alessandro Zummo
|
Cleaned up for 2.3.x/softnet by Jeff Garzik and Alan Cox.
|
|
2001/11/17 - Added ethtool support (jgarzik)
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|
2002/10/28 - Locking updates for 2.5 (alan@lxorguk.ukuu.org.uk)
|
|
*/
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|
#define DRV_NAME "3c515"
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|
#define CORKSCREW 1
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|
/* "Knobs" that adjust features and parameters. */
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/* Set the copy breakpoint for the copy-only-tiny-frames scheme.
|
Setting to > 1512 effectively disables this feature. */
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static int rx_copybreak = 200;
|
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/* Allow setting MTU to a larger size, bypassing the normal ethernet setup. */
|
static const int mtu = 1500;
|
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/* Maximum events (Rx packets, etc.) to handle at each interrupt. */
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static int max_interrupt_work = 20;
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/* Enable the automatic media selection code -- usually set. */
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#define AUTOMEDIA 1
|
|
/* Allow the use of fragment bus master transfers instead of only
|
programmed-I/O for Vortex cards. Full-bus-master transfers are always
|
enabled by default on Boomerang cards. If VORTEX_BUS_MASTER is defined,
|
the feature may be turned on using 'options'. */
|
#define VORTEX_BUS_MASTER
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|
/* A few values that may be tweaked. */
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/* Keep the ring sizes a power of two for efficiency. */
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#define TX_RING_SIZE 16
|
#define RX_RING_SIZE 16
|
#define PKT_BUF_SZ 1536 /* Size of each temporary Rx buffer. */
|
|
#include <linux/module.h>
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#include <linux/isapnp.h>
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#include <linux/kernel.h>
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#include <linux/netdevice.h>
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#include <linux/string.h>
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#include <linux/errno.h>
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#include <linux/in.h>
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#include <linux/ioport.h>
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#include <linux/skbuff.h>
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#include <linux/etherdevice.h>
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#include <linux/interrupt.h>
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#include <linux/timer.h>
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#include <linux/ethtool.h>
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#include <linux/bitops.h>
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#include <linux/uaccess.h>
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#include <asm/io.h>
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#include <asm/dma.h>
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#define NEW_MULTICAST
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#include <linux/delay.h>
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#define MAX_UNITS 8
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MODULE_AUTHOR("Donald Becker <becker@scyld.com>");
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MODULE_DESCRIPTION("3Com 3c515 Corkscrew driver");
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MODULE_LICENSE("GPL");
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/* "Knobs" for adjusting internal parameters. */
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/* Put out somewhat more debugging messages. (0 - no msg, 1 minimal msgs). */
|
#define DRIVER_DEBUG 1
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/* Some values here only for performance evaluation and path-coverage
|
debugging. */
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static int rx_nocopy, rx_copy, queued_packet;
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/* Number of times to check to see if the Tx FIFO has space, used in some
|
limited cases. */
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#define WAIT_TX_AVAIL 200
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/* Operational parameter that usually are not changed. */
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#define TX_TIMEOUT ((4*HZ)/10) /* Time in jiffies before concluding Tx hung */
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/* The size here is somewhat misleading: the Corkscrew also uses the ISA
|
aliased registers at <base>+0x400.
|
*/
|
#define CORKSCREW_TOTAL_SIZE 0x20
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|
#ifdef DRIVER_DEBUG
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static int corkscrew_debug = DRIVER_DEBUG;
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#else
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static int corkscrew_debug = 1;
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#endif
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#define CORKSCREW_ID 10
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/*
|
Theory of Operation
|
|
I. Board Compatibility
|
|
This device driver is designed for the 3Com 3c515 ISA Fast EtherLink XL,
|
3Com's ISA bus adapter for Fast Ethernet. Due to the unique I/O port layout,
|
it's not practical to integrate this driver with the other EtherLink drivers.
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II. Board-specific settings
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|
The Corkscrew has an EEPROM for configuration, but no special settings are
|
needed for Linux.
|
|
III. Driver operation
|
|
The 3c515 series use an interface that's very similar to the 3c900 "Boomerang"
|
PCI cards, with the bus master interface extensively modified to work with
|
the ISA bus.
|
|
The card is capable of full-bus-master transfers with separate
|
lists of transmit and receive descriptors, similar to the AMD LANCE/PCnet,
|
DEC Tulip and Intel Speedo3.
|
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This driver uses a "RX_COPYBREAK" scheme rather than a fixed intermediate
|
receive buffer. This scheme allocates full-sized skbuffs as receive
|
buffers. The value RX_COPYBREAK is used as the copying breakpoint: it is
|
chosen to trade-off the memory wasted by passing the full-sized skbuff to
|
the queue layer for all frames vs. the copying cost of copying a frame to a
|
correctly-sized skbuff.
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|
|
IIIC. Synchronization
|
The driver runs as two independent, single-threaded flows of control. One
|
is the send-packet routine, which enforces single-threaded use by the netif
|
layer. The other thread is the interrupt handler, which is single
|
threaded by the hardware and other software.
|
|
IV. Notes
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|
Thanks to Terry Murphy of 3Com for providing documentation and a development
|
board.
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|
The names "Vortex", "Boomerang" and "Corkscrew" are the internal 3Com
|
project names. I use these names to eliminate confusion -- 3Com product
|
numbers and names are very similar and often confused.
|
|
The new chips support both ethernet (1.5K) and FDDI (4.5K) frame sizes!
|
This driver only supports ethernet frames because of the recent MTU limit
|
of 1.5K, but the changes to support 4.5K are minimal.
|
*/
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|
/* Operational definitions.
|
These are not used by other compilation units and thus are not
|
exported in a ".h" file.
|
|
First the windows. There are eight register windows, with the command
|
and status registers available in each.
|
*/
|
#define EL3WINDOW(win_num) outw(SelectWindow + (win_num), ioaddr + EL3_CMD)
|
#define EL3_CMD 0x0e
|
#define EL3_STATUS 0x0e
|
|
/* The top five bits written to EL3_CMD are a command, the lower
|
11 bits are the parameter, if applicable.
|
Note that 11 parameters bits was fine for ethernet, but the new chips
|
can handle FDDI length frames (~4500 octets) and now parameters count
|
32-bit 'Dwords' rather than octets. */
|
|
enum corkscrew_cmd {
|
TotalReset = 0 << 11, SelectWindow = 1 << 11, StartCoax = 2 << 11,
|
RxDisable = 3 << 11, RxEnable = 4 << 11, RxReset = 5 << 11,
|
UpStall = 6 << 11, UpUnstall = (6 << 11) + 1, DownStall = (6 << 11) + 2,
|
DownUnstall = (6 << 11) + 3, RxDiscard = 8 << 11, TxEnable = 9 << 11,
|
TxDisable = 10 << 11, TxReset = 11 << 11, FakeIntr = 12 << 11,
|
AckIntr = 13 << 11, SetIntrEnb = 14 << 11, SetStatusEnb = 15 << 11,
|
SetRxFilter = 16 << 11, SetRxThreshold = 17 << 11,
|
SetTxThreshold = 18 << 11, SetTxStart = 19 << 11, StartDMAUp = 20 << 11,
|
StartDMADown = (20 << 11) + 1, StatsEnable = 21 << 11,
|
StatsDisable = 22 << 11, StopCoax = 23 << 11,
|
};
|
|
/* The SetRxFilter command accepts the following classes: */
|
enum RxFilter {
|
RxStation = 1, RxMulticast = 2, RxBroadcast = 4, RxProm = 8
|
};
|
|
/* Bits in the general status register. */
|
enum corkscrew_status {
|
IntLatch = 0x0001, AdapterFailure = 0x0002, TxComplete = 0x0004,
|
TxAvailable = 0x0008, RxComplete = 0x0010, RxEarly = 0x0020,
|
IntReq = 0x0040, StatsFull = 0x0080,
|
DMADone = 1 << 8, DownComplete = 1 << 9, UpComplete = 1 << 10,
|
DMAInProgress = 1 << 11, /* DMA controller is still busy. */
|
CmdInProgress = 1 << 12, /* EL3_CMD is still busy. */
|
};
|
|
/* Register window 1 offsets, the window used in normal operation.
|
On the Corkscrew this window is always mapped at offsets 0x10-0x1f. */
|
enum Window1 {
|
TX_FIFO = 0x10, RX_FIFO = 0x10, RxErrors = 0x14,
|
RxStatus = 0x18, Timer = 0x1A, TxStatus = 0x1B,
|
TxFree = 0x1C, /* Remaining free bytes in Tx buffer. */
|
};
|
enum Window0 {
|
Wn0IRQ = 0x08,
|
#if defined(CORKSCREW)
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Wn0EepromCmd = 0x200A, /* Corkscrew EEPROM command register. */
|
Wn0EepromData = 0x200C, /* Corkscrew EEPROM results register. */
|
#else
|
Wn0EepromCmd = 10, /* Window 0: EEPROM command register. */
|
Wn0EepromData = 12, /* Window 0: EEPROM results register. */
|
#endif
|
};
|
enum Win0_EEPROM_bits {
|
EEPROM_Read = 0x80, EEPROM_WRITE = 0x40, EEPROM_ERASE = 0xC0,
|
EEPROM_EWENB = 0x30, /* Enable erasing/writing for 10 msec. */
|
EEPROM_EWDIS = 0x00, /* Disable EWENB before 10 msec timeout. */
|
};
|
|
/* EEPROM locations. */
|
enum eeprom_offset {
|
PhysAddr01 = 0, PhysAddr23 = 1, PhysAddr45 = 2, ModelID = 3,
|
EtherLink3ID = 7,
|
};
|
|
enum Window3 { /* Window 3: MAC/config bits. */
|
Wn3_Config = 0, Wn3_MAC_Ctrl = 6, Wn3_Options = 8,
|
};
|
enum wn3_config {
|
Ram_size = 7,
|
Ram_width = 8,
|
Ram_speed = 0x30,
|
Rom_size = 0xc0,
|
Ram_split_shift = 16,
|
Ram_split = 3 << Ram_split_shift,
|
Xcvr_shift = 20,
|
Xcvr = 7 << Xcvr_shift,
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Autoselect = 0x1000000,
|
};
|
|
enum Window4 {
|
Wn4_NetDiag = 6, Wn4_Media = 10, /* Window 4: Xcvr/media bits. */
|
};
|
enum Win4_Media_bits {
|
Media_SQE = 0x0008, /* Enable SQE error counting for AUI. */
|
Media_10TP = 0x00C0, /* Enable link beat and jabber for 10baseT. */
|
Media_Lnk = 0x0080, /* Enable just link beat for 100TX/100FX. */
|
Media_LnkBeat = 0x0800,
|
};
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enum Window7 { /* Window 7: Bus Master control. */
|
Wn7_MasterAddr = 0, Wn7_MasterLen = 6, Wn7_MasterStatus = 12,
|
};
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/* Boomerang-style bus master control registers. Note ISA aliases! */
|
enum MasterCtrl {
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PktStatus = 0x400, DownListPtr = 0x404, FragAddr = 0x408, FragLen =
|
0x40c,
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TxFreeThreshold = 0x40f, UpPktStatus = 0x410, UpListPtr = 0x418,
|
};
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/* The Rx and Tx descriptor lists.
|
Caution Alpha hackers: these types are 32 bits! Note also the 8 byte
|
alignment contraint on tx_ring[] and rx_ring[]. */
|
struct boom_rx_desc {
|
u32 next;
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s32 status;
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u32 addr;
|
s32 length;
|
};
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|
/* Values for the Rx status entry. */
|
enum rx_desc_status {
|
RxDComplete = 0x00008000, RxDError = 0x4000,
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/* See boomerang_rx() for actual error bits */
|
};
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|
struct boom_tx_desc {
|
u32 next;
|
s32 status;
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u32 addr;
|
s32 length;
|
};
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|
struct corkscrew_private {
|
const char *product_name;
|
struct list_head list;
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struct net_device *our_dev;
|
/* The Rx and Tx rings are here to keep them quad-word-aligned. */
|
struct boom_rx_desc rx_ring[RX_RING_SIZE];
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struct boom_tx_desc tx_ring[TX_RING_SIZE];
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/* The addresses of transmit- and receive-in-place skbuffs. */
|
struct sk_buff *rx_skbuff[RX_RING_SIZE];
|
struct sk_buff *tx_skbuff[TX_RING_SIZE];
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unsigned int cur_rx, cur_tx; /* The next free ring entry */
|
unsigned int dirty_rx, dirty_tx;/* The ring entries to be free()ed. */
|
struct sk_buff *tx_skb; /* Packet being eaten by bus master ctrl. */
|
struct timer_list timer; /* Media selection timer. */
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int capabilities ; /* Adapter capabilities word. */
|
int options; /* User-settable misc. driver options. */
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int last_rx_packets; /* For media autoselection. */
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unsigned int available_media:8, /* From Wn3_Options */
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media_override:3, /* Passed-in media type. */
|
default_media:3, /* Read from the EEPROM. */
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full_duplex:1, autoselect:1, bus_master:1, /* Vortex can only do a fragment bus-m. */
|
full_bus_master_tx:1, full_bus_master_rx:1, /* Boomerang */
|
tx_full:1;
|
spinlock_t lock;
|
struct device *dev;
|
};
|
|
/* The action to take with a media selection timer tick.
|
Note that we deviate from the 3Com order by checking 10base2 before AUI.
|
*/
|
enum xcvr_types {
|
XCVR_10baseT = 0, XCVR_AUI, XCVR_10baseTOnly, XCVR_10base2, XCVR_100baseTx,
|
XCVR_100baseFx, XCVR_MII = 6, XCVR_Default = 8,
|
};
|
|
static struct media_table {
|
char *name;
|
unsigned int media_bits:16, /* Bits to set in Wn4_Media register. */
|
mask:8, /* The transceiver-present bit in Wn3_Config. */
|
next:8; /* The media type to try next. */
|
short wait; /* Time before we check media status. */
|
} media_tbl[] = {
|
{ "10baseT", Media_10TP, 0x08, XCVR_10base2, (14 * HZ) / 10 },
|
{ "10Mbs AUI", Media_SQE, 0x20, XCVR_Default, (1 * HZ) / 10},
|
{ "undefined", 0, 0x80, XCVR_10baseT, 10000},
|
{ "10base2", 0, 0x10, XCVR_AUI, (1 * HZ) / 10},
|
{ "100baseTX", Media_Lnk, 0x02, XCVR_100baseFx, (14 * HZ) / 10},
|
{ "100baseFX", Media_Lnk, 0x04, XCVR_MII, (14 * HZ) / 10},
|
{ "MII", 0, 0x40, XCVR_10baseT, 3 * HZ},
|
{ "undefined", 0, 0x01, XCVR_10baseT, 10000},
|
{ "Default", 0, 0xFF, XCVR_10baseT, 10000},
|
};
|
|
#ifdef __ISAPNP__
|
static struct isapnp_device_id corkscrew_isapnp_adapters[] = {
|
{ ISAPNP_ANY_ID, ISAPNP_ANY_ID,
|
ISAPNP_VENDOR('T', 'C', 'M'), ISAPNP_FUNCTION(0x5051),
|
(long) "3Com Fast EtherLink ISA" },
|
{ } /* terminate list */
|
};
|
|
MODULE_DEVICE_TABLE(isapnp, corkscrew_isapnp_adapters);
|
|
static int nopnp;
|
#endif /* __ISAPNP__ */
|
|
static struct net_device *corkscrew_scan(int unit);
|
static int corkscrew_setup(struct net_device *dev, int ioaddr,
|
struct pnp_dev *idev, int card_number);
|
static int corkscrew_open(struct net_device *dev);
|
static void corkscrew_timer(struct timer_list *t);
|
static netdev_tx_t corkscrew_start_xmit(struct sk_buff *skb,
|
struct net_device *dev);
|
static int corkscrew_rx(struct net_device *dev);
|
static void corkscrew_timeout(struct net_device *dev, unsigned int txqueue);
|
static int boomerang_rx(struct net_device *dev);
|
static irqreturn_t corkscrew_interrupt(int irq, void *dev_id);
|
static int corkscrew_close(struct net_device *dev);
|
static void update_stats(int addr, struct net_device *dev);
|
static struct net_device_stats *corkscrew_get_stats(struct net_device *dev);
|
static void set_rx_mode(struct net_device *dev);
|
static const struct ethtool_ops netdev_ethtool_ops;
|
|
|
/*
|
Unfortunately maximizing the shared code between the integrated and
|
module version of the driver results in a complicated set of initialization
|
procedures.
|
init_module() -- modules / tc59x_init() -- built-in
|
The wrappers for corkscrew_scan()
|
corkscrew_scan() The common routine that scans for PCI and EISA cards
|
corkscrew_found_device() Allocate a device structure when we find a card.
|
Different versions exist for modules and built-in.
|
corkscrew_probe1() Fill in the device structure -- this is separated
|
so that the modules code can put it in dev->init.
|
*/
|
/* This driver uses 'options' to pass the media type, full-duplex flag, etc. */
|
/* Note: this is the only limit on the number of cards supported!! */
|
static int options[MAX_UNITS] = { -1, -1, -1, -1, -1, -1, -1, -1, };
|
|
#ifdef MODULE
|
static int debug = -1;
|
|
module_param(debug, int, 0);
|
module_param_array(options, int, NULL, 0);
|
module_param(rx_copybreak, int, 0);
|
module_param(max_interrupt_work, int, 0);
|
MODULE_PARM_DESC(debug, "3c515 debug level (0-6)");
|
MODULE_PARM_DESC(options, "3c515: Bits 0-2: media type, bit 3: full duplex, bit 4: bus mastering");
|
MODULE_PARM_DESC(rx_copybreak, "3c515 copy breakpoint for copy-only-tiny-frames");
|
MODULE_PARM_DESC(max_interrupt_work, "3c515 maximum events handled per interrupt");
|
|
/* A list of all installed Vortex devices, for removing the driver module. */
|
/* we will need locking (and refcounting) if we ever use it for more */
|
static LIST_HEAD(root_corkscrew_dev);
|
|
int init_module(void)
|
{
|
int found = 0;
|
if (debug >= 0)
|
corkscrew_debug = debug;
|
while (corkscrew_scan(-1))
|
found++;
|
return found ? 0 : -ENODEV;
|
}
|
|
#else
|
struct net_device *tc515_probe(int unit)
|
{
|
struct net_device *dev = corkscrew_scan(unit);
|
|
if (!dev)
|
return ERR_PTR(-ENODEV);
|
|
return dev;
|
}
|
#endif /* not MODULE */
|
|
static int check_device(unsigned ioaddr)
|
{
|
int timer;
|
|
if (!request_region(ioaddr, CORKSCREW_TOTAL_SIZE, "3c515"))
|
return 0;
|
/* Check the resource configuration for a matching ioaddr. */
|
if ((inw(ioaddr + 0x2002) & 0x1f0) != (ioaddr & 0x1f0)) {
|
release_region(ioaddr, CORKSCREW_TOTAL_SIZE);
|
return 0;
|
}
|
/* Verify by reading the device ID from the EEPROM. */
|
outw(EEPROM_Read + 7, ioaddr + Wn0EepromCmd);
|
/* Pause for at least 162 us. for the read to take place. */
|
for (timer = 4; timer >= 0; timer--) {
|
udelay(162);
|
if ((inw(ioaddr + Wn0EepromCmd) & 0x0200) == 0)
|
break;
|
}
|
if (inw(ioaddr + Wn0EepromData) != 0x6d50) {
|
release_region(ioaddr, CORKSCREW_TOTAL_SIZE);
|
return 0;
|
}
|
return 1;
|
}
|
|
static void cleanup_card(struct net_device *dev)
|
{
|
struct corkscrew_private *vp = netdev_priv(dev);
|
list_del_init(&vp->list);
|
if (dev->dma)
|
free_dma(dev->dma);
|
outw(TotalReset, dev->base_addr + EL3_CMD);
|
release_region(dev->base_addr, CORKSCREW_TOTAL_SIZE);
|
if (vp->dev)
|
pnp_device_detach(to_pnp_dev(vp->dev));
|
}
|
|
static struct net_device *corkscrew_scan(int unit)
|
{
|
struct net_device *dev;
|
static int cards_found = 0;
|
static int ioaddr;
|
int err;
|
#ifdef __ISAPNP__
|
short i;
|
static int pnp_cards;
|
#endif
|
|
dev = alloc_etherdev(sizeof(struct corkscrew_private));
|
if (!dev)
|
return ERR_PTR(-ENOMEM);
|
|
if (unit >= 0) {
|
sprintf(dev->name, "eth%d", unit);
|
netdev_boot_setup_check(dev);
|
}
|
|
#ifdef __ISAPNP__
|
if(nopnp == 1)
|
goto no_pnp;
|
for(i=0; corkscrew_isapnp_adapters[i].vendor != 0; i++) {
|
struct pnp_dev *idev = NULL;
|
int irq;
|
while((idev = pnp_find_dev(NULL,
|
corkscrew_isapnp_adapters[i].vendor,
|
corkscrew_isapnp_adapters[i].function,
|
idev))) {
|
|
if (pnp_device_attach(idev) < 0)
|
continue;
|
if (pnp_activate_dev(idev) < 0) {
|
pr_warn("pnp activate failed (out of resources?)\n");
|
pnp_device_detach(idev);
|
continue;
|
}
|
if (!pnp_port_valid(idev, 0) || !pnp_irq_valid(idev, 0)) {
|
pnp_device_detach(idev);
|
continue;
|
}
|
ioaddr = pnp_port_start(idev, 0);
|
irq = pnp_irq(idev, 0);
|
if (!check_device(ioaddr)) {
|
pnp_device_detach(idev);
|
continue;
|
}
|
if(corkscrew_debug)
|
pr_debug("ISAPNP reports %s at i/o 0x%x, irq %d\n",
|
(char*) corkscrew_isapnp_adapters[i].driver_data, ioaddr, irq);
|
pr_info("3c515 Resource configuration register %#4.4x, DCR %4.4x.\n",
|
inl(ioaddr + 0x2002), inw(ioaddr + 0x2000));
|
/* irq = inw(ioaddr + 0x2002) & 15; */ /* Use the irq from isapnp */
|
SET_NETDEV_DEV(dev, &idev->dev);
|
pnp_cards++;
|
err = corkscrew_setup(dev, ioaddr, idev, cards_found++);
|
if (!err)
|
return dev;
|
cleanup_card(dev);
|
}
|
}
|
no_pnp:
|
#endif /* __ISAPNP__ */
|
|
/* Check all locations on the ISA bus -- evil! */
|
for (ioaddr = 0x100; ioaddr < 0x400; ioaddr += 0x20) {
|
if (!check_device(ioaddr))
|
continue;
|
|
pr_info("3c515 Resource configuration register %#4.4x, DCR %4.4x.\n",
|
inl(ioaddr + 0x2002), inw(ioaddr + 0x2000));
|
err = corkscrew_setup(dev, ioaddr, NULL, cards_found++);
|
if (!err)
|
return dev;
|
cleanup_card(dev);
|
}
|
free_netdev(dev);
|
return NULL;
|
}
|
|
|
static const struct net_device_ops netdev_ops = {
|
.ndo_open = corkscrew_open,
|
.ndo_stop = corkscrew_close,
|
.ndo_start_xmit = corkscrew_start_xmit,
|
.ndo_tx_timeout = corkscrew_timeout,
|
.ndo_get_stats = corkscrew_get_stats,
|
.ndo_set_rx_mode = set_rx_mode,
|
.ndo_set_mac_address = eth_mac_addr,
|
.ndo_validate_addr = eth_validate_addr,
|
};
|
|
|
static int corkscrew_setup(struct net_device *dev, int ioaddr,
|
struct pnp_dev *idev, int card_number)
|
{
|
struct corkscrew_private *vp = netdev_priv(dev);
|
unsigned int eeprom[0x40], checksum = 0; /* EEPROM contents */
|
int i;
|
int irq;
|
|
#ifdef __ISAPNP__
|
if (idev) {
|
irq = pnp_irq(idev, 0);
|
vp->dev = &idev->dev;
|
} else {
|
irq = inw(ioaddr + 0x2002) & 15;
|
}
|
#else
|
irq = inw(ioaddr + 0x2002) & 15;
|
#endif
|
|
dev->base_addr = ioaddr;
|
dev->irq = irq;
|
dev->dma = inw(ioaddr + 0x2000) & 7;
|
vp->product_name = "3c515";
|
vp->options = dev->mem_start;
|
vp->our_dev = dev;
|
|
if (!vp->options) {
|
if (card_number >= MAX_UNITS)
|
vp->options = -1;
|
else
|
vp->options = options[card_number];
|
}
|
|
if (vp->options >= 0) {
|
vp->media_override = vp->options & 7;
|
if (vp->media_override == 2)
|
vp->media_override = 0;
|
vp->full_duplex = (vp->options & 8) ? 1 : 0;
|
vp->bus_master = (vp->options & 16) ? 1 : 0;
|
} else {
|
vp->media_override = 7;
|
vp->full_duplex = 0;
|
vp->bus_master = 0;
|
}
|
#ifdef MODULE
|
list_add(&vp->list, &root_corkscrew_dev);
|
#endif
|
|
pr_info("%s: 3Com %s at %#3x,", dev->name, vp->product_name, ioaddr);
|
|
spin_lock_init(&vp->lock);
|
|
timer_setup(&vp->timer, corkscrew_timer, 0);
|
|
/* Read the station address from the EEPROM. */
|
EL3WINDOW(0);
|
for (i = 0; i < 0x18; i++) {
|
__be16 *phys_addr = (__be16 *) dev->dev_addr;
|
int timer;
|
outw(EEPROM_Read + i, ioaddr + Wn0EepromCmd);
|
/* Pause for at least 162 us. for the read to take place. */
|
for (timer = 4; timer >= 0; timer--) {
|
udelay(162);
|
if ((inw(ioaddr + Wn0EepromCmd) & 0x0200) == 0)
|
break;
|
}
|
eeprom[i] = inw(ioaddr + Wn0EepromData);
|
checksum ^= eeprom[i];
|
if (i < 3)
|
phys_addr[i] = htons(eeprom[i]);
|
}
|
checksum = (checksum ^ (checksum >> 8)) & 0xff;
|
if (checksum != 0x00)
|
pr_cont(" ***INVALID CHECKSUM %4.4x*** ", checksum);
|
pr_cont(" %pM", dev->dev_addr);
|
if (eeprom[16] == 0x11c7) { /* Corkscrew */
|
if (request_dma(dev->dma, "3c515")) {
|
pr_cont(", DMA %d allocation failed", dev->dma);
|
dev->dma = 0;
|
} else
|
pr_cont(", DMA %d", dev->dma);
|
}
|
pr_cont(", IRQ %d\n", dev->irq);
|
/* Tell them about an invalid IRQ. */
|
if (corkscrew_debug && (dev->irq <= 0 || dev->irq > 15))
|
pr_warn(" *** Warning: this IRQ is unlikely to work! ***\n");
|
|
{
|
static const char * const ram_split[] = {
|
"5:3", "3:1", "1:1", "3:5"
|
};
|
__u32 config;
|
EL3WINDOW(3);
|
vp->available_media = inw(ioaddr + Wn3_Options);
|
config = inl(ioaddr + Wn3_Config);
|
if (corkscrew_debug > 1)
|
pr_info(" Internal config register is %4.4x, transceivers %#x.\n",
|
config, inw(ioaddr + Wn3_Options));
|
pr_info(" %dK %s-wide RAM %s Rx:Tx split, %s%s interface.\n",
|
8 << config & Ram_size,
|
config & Ram_width ? "word" : "byte",
|
ram_split[(config & Ram_split) >> Ram_split_shift],
|
config & Autoselect ? "autoselect/" : "",
|
media_tbl[(config & Xcvr) >> Xcvr_shift].name);
|
vp->default_media = (config & Xcvr) >> Xcvr_shift;
|
vp->autoselect = config & Autoselect ? 1 : 0;
|
dev->if_port = vp->default_media;
|
}
|
if (vp->media_override != 7) {
|
pr_info(" Media override to transceiver type %d (%s).\n",
|
vp->media_override,
|
media_tbl[vp->media_override].name);
|
dev->if_port = vp->media_override;
|
}
|
|
vp->capabilities = eeprom[16];
|
vp->full_bus_master_tx = (vp->capabilities & 0x20) ? 1 : 0;
|
/* Rx is broken at 10mbps, so we always disable it. */
|
/* vp->full_bus_master_rx = 0; */
|
vp->full_bus_master_rx = (vp->capabilities & 0x20) ? 1 : 0;
|
|
/* The 3c51x-specific entries in the device structure. */
|
dev->netdev_ops = &netdev_ops;
|
dev->watchdog_timeo = (400 * HZ) / 1000;
|
dev->ethtool_ops = &netdev_ethtool_ops;
|
|
return register_netdev(dev);
|
}
|
|
|
static int corkscrew_open(struct net_device *dev)
|
{
|
int ioaddr = dev->base_addr;
|
struct corkscrew_private *vp = netdev_priv(dev);
|
bool armtimer = false;
|
__u32 config;
|
int i;
|
|
/* Before initializing select the active media port. */
|
EL3WINDOW(3);
|
if (vp->full_duplex)
|
outb(0x20, ioaddr + Wn3_MAC_Ctrl); /* Set the full-duplex bit. */
|
config = inl(ioaddr + Wn3_Config);
|
|
if (vp->media_override != 7) {
|
if (corkscrew_debug > 1)
|
pr_info("%s: Media override to transceiver %d (%s).\n",
|
dev->name, vp->media_override,
|
media_tbl[vp->media_override].name);
|
dev->if_port = vp->media_override;
|
} else if (vp->autoselect) {
|
/* Find first available media type, starting with 100baseTx. */
|
dev->if_port = 4;
|
while (!(vp->available_media & media_tbl[dev->if_port].mask))
|
dev->if_port = media_tbl[dev->if_port].next;
|
|
if (corkscrew_debug > 1)
|
pr_debug("%s: Initial media type %s.\n",
|
dev->name, media_tbl[dev->if_port].name);
|
armtimer = true;
|
} else
|
dev->if_port = vp->default_media;
|
|
config = (config & ~Xcvr) | (dev->if_port << Xcvr_shift);
|
outl(config, ioaddr + Wn3_Config);
|
|
if (corkscrew_debug > 1) {
|
pr_debug("%s: corkscrew_open() InternalConfig %8.8x.\n",
|
dev->name, config);
|
}
|
|
outw(TxReset, ioaddr + EL3_CMD);
|
for (i = 20; i >= 0; i--)
|
if (!(inw(ioaddr + EL3_STATUS) & CmdInProgress))
|
break;
|
|
outw(RxReset, ioaddr + EL3_CMD);
|
/* Wait a few ticks for the RxReset command to complete. */
|
for (i = 20; i >= 0; i--)
|
if (!(inw(ioaddr + EL3_STATUS) & CmdInProgress))
|
break;
|
|
outw(SetStatusEnb | 0x00, ioaddr + EL3_CMD);
|
|
/* Use the now-standard shared IRQ implementation. */
|
if (vp->capabilities == 0x11c7) {
|
/* Corkscrew: Cannot share ISA resources. */
|
if (dev->irq == 0 ||
|
dev->dma == 0 ||
|
request_irq(dev->irq, corkscrew_interrupt, 0,
|
vp->product_name, dev))
|
return -EAGAIN;
|
enable_dma(dev->dma);
|
set_dma_mode(dev->dma, DMA_MODE_CASCADE);
|
} else if (request_irq(dev->irq, corkscrew_interrupt, IRQF_SHARED,
|
vp->product_name, dev)) {
|
return -EAGAIN;
|
}
|
|
if (armtimer)
|
mod_timer(&vp->timer, jiffies + media_tbl[dev->if_port].wait);
|
|
if (corkscrew_debug > 1) {
|
EL3WINDOW(4);
|
pr_debug("%s: corkscrew_open() irq %d media status %4.4x.\n",
|
dev->name, dev->irq, inw(ioaddr + Wn4_Media));
|
}
|
|
/* Set the station address and mask in window 2 each time opened. */
|
EL3WINDOW(2);
|
for (i = 0; i < 6; i++)
|
outb(dev->dev_addr[i], ioaddr + i);
|
for (; i < 12; i += 2)
|
outw(0, ioaddr + i);
|
|
if (dev->if_port == 3)
|
/* Start the thinnet transceiver. We should really wait 50ms... */
|
outw(StartCoax, ioaddr + EL3_CMD);
|
EL3WINDOW(4);
|
outw((inw(ioaddr + Wn4_Media) & ~(Media_10TP | Media_SQE)) |
|
media_tbl[dev->if_port].media_bits, ioaddr + Wn4_Media);
|
|
/* Switch to the stats window, and clear all stats by reading. */
|
outw(StatsDisable, ioaddr + EL3_CMD);
|
EL3WINDOW(6);
|
for (i = 0; i < 10; i++)
|
inb(ioaddr + i);
|
inw(ioaddr + 10);
|
inw(ioaddr + 12);
|
/* New: On the Vortex we must also clear the BadSSD counter. */
|
EL3WINDOW(4);
|
inb(ioaddr + 12);
|
/* ..and on the Boomerang we enable the extra statistics bits. */
|
outw(0x0040, ioaddr + Wn4_NetDiag);
|
|
/* Switch to register set 7 for normal use. */
|
EL3WINDOW(7);
|
|
if (vp->full_bus_master_rx) { /* Boomerang bus master. */
|
vp->cur_rx = vp->dirty_rx = 0;
|
if (corkscrew_debug > 2)
|
pr_debug("%s: Filling in the Rx ring.\n", dev->name);
|
for (i = 0; i < RX_RING_SIZE; i++) {
|
struct sk_buff *skb;
|
if (i < (RX_RING_SIZE - 1))
|
vp->rx_ring[i].next =
|
isa_virt_to_bus(&vp->rx_ring[i + 1]);
|
else
|
vp->rx_ring[i].next = 0;
|
vp->rx_ring[i].status = 0; /* Clear complete bit. */
|
vp->rx_ring[i].length = PKT_BUF_SZ | 0x80000000;
|
skb = netdev_alloc_skb(dev, PKT_BUF_SZ);
|
vp->rx_skbuff[i] = skb;
|
if (skb == NULL)
|
break; /* Bad news! */
|
skb_reserve(skb, 2); /* Align IP on 16 byte boundaries */
|
vp->rx_ring[i].addr = isa_virt_to_bus(skb->data);
|
}
|
if (i != 0)
|
vp->rx_ring[i - 1].next =
|
isa_virt_to_bus(&vp->rx_ring[0]); /* Wrap the ring. */
|
outl(isa_virt_to_bus(&vp->rx_ring[0]), ioaddr + UpListPtr);
|
}
|
if (vp->full_bus_master_tx) { /* Boomerang bus master Tx. */
|
vp->cur_tx = vp->dirty_tx = 0;
|
outb(PKT_BUF_SZ >> 8, ioaddr + TxFreeThreshold); /* Room for a packet. */
|
/* Clear the Tx ring. */
|
for (i = 0; i < TX_RING_SIZE; i++)
|
vp->tx_skbuff[i] = NULL;
|
outl(0, ioaddr + DownListPtr);
|
}
|
/* Set receiver mode: presumably accept b-case and phys addr only. */
|
set_rx_mode(dev);
|
outw(StatsEnable, ioaddr + EL3_CMD); /* Turn on statistics. */
|
|
netif_start_queue(dev);
|
|
outw(RxEnable, ioaddr + EL3_CMD); /* Enable the receiver. */
|
outw(TxEnable, ioaddr + EL3_CMD); /* Enable transmitter. */
|
/* Allow status bits to be seen. */
|
outw(SetStatusEnb | AdapterFailure | IntReq | StatsFull |
|
(vp->full_bus_master_tx ? DownComplete : TxAvailable) |
|
(vp->full_bus_master_rx ? UpComplete : RxComplete) |
|
(vp->bus_master ? DMADone : 0), ioaddr + EL3_CMD);
|
/* Ack all pending events, and set active indicator mask. */
|
outw(AckIntr | IntLatch | TxAvailable | RxEarly | IntReq,
|
ioaddr + EL3_CMD);
|
outw(SetIntrEnb | IntLatch | TxAvailable | RxComplete | StatsFull
|
| (vp->bus_master ? DMADone : 0) | UpComplete | DownComplete,
|
ioaddr + EL3_CMD);
|
|
return 0;
|
}
|
|
static void corkscrew_timer(struct timer_list *t)
|
{
|
#ifdef AUTOMEDIA
|
struct corkscrew_private *vp = from_timer(vp, t, timer);
|
struct net_device *dev = vp->our_dev;
|
int ioaddr = dev->base_addr;
|
unsigned long flags;
|
int ok = 0;
|
|
if (corkscrew_debug > 1)
|
pr_debug("%s: Media selection timer tick happened, %s.\n",
|
dev->name, media_tbl[dev->if_port].name);
|
|
spin_lock_irqsave(&vp->lock, flags);
|
|
{
|
int old_window = inw(ioaddr + EL3_CMD) >> 13;
|
int media_status;
|
EL3WINDOW(4);
|
media_status = inw(ioaddr + Wn4_Media);
|
switch (dev->if_port) {
|
case 0:
|
case 4:
|
case 5: /* 10baseT, 100baseTX, 100baseFX */
|
if (media_status & Media_LnkBeat) {
|
ok = 1;
|
if (corkscrew_debug > 1)
|
pr_debug("%s: Media %s has link beat, %x.\n",
|
dev->name,
|
media_tbl[dev->if_port].name,
|
media_status);
|
} else if (corkscrew_debug > 1)
|
pr_debug("%s: Media %s is has no link beat, %x.\n",
|
dev->name,
|
media_tbl[dev->if_port].name,
|
media_status);
|
|
break;
|
default: /* Other media types handled by Tx timeouts. */
|
if (corkscrew_debug > 1)
|
pr_debug("%s: Media %s is has no indication, %x.\n",
|
dev->name,
|
media_tbl[dev->if_port].name,
|
media_status);
|
ok = 1;
|
}
|
if (!ok) {
|
__u32 config;
|
|
do {
|
dev->if_port =
|
media_tbl[dev->if_port].next;
|
}
|
while (!(vp->available_media & media_tbl[dev->if_port].mask));
|
|
if (dev->if_port == 8) { /* Go back to default. */
|
dev->if_port = vp->default_media;
|
if (corkscrew_debug > 1)
|
pr_debug("%s: Media selection failing, using default %s port.\n",
|
dev->name,
|
media_tbl[dev->if_port].name);
|
} else {
|
if (corkscrew_debug > 1)
|
pr_debug("%s: Media selection failed, now trying %s port.\n",
|
dev->name,
|
media_tbl[dev->if_port].name);
|
vp->timer.expires = jiffies + media_tbl[dev->if_port].wait;
|
add_timer(&vp->timer);
|
}
|
outw((media_status & ~(Media_10TP | Media_SQE)) |
|
media_tbl[dev->if_port].media_bits,
|
ioaddr + Wn4_Media);
|
|
EL3WINDOW(3);
|
config = inl(ioaddr + Wn3_Config);
|
config = (config & ~Xcvr) | (dev->if_port << Xcvr_shift);
|
outl(config, ioaddr + Wn3_Config);
|
|
outw(dev->if_port == 3 ? StartCoax : StopCoax,
|
ioaddr + EL3_CMD);
|
}
|
EL3WINDOW(old_window);
|
}
|
|
spin_unlock_irqrestore(&vp->lock, flags);
|
if (corkscrew_debug > 1)
|
pr_debug("%s: Media selection timer finished, %s.\n",
|
dev->name, media_tbl[dev->if_port].name);
|
|
#endif /* AUTOMEDIA */
|
}
|
|
static void corkscrew_timeout(struct net_device *dev, unsigned int txqueue)
|
{
|
int i;
|
struct corkscrew_private *vp = netdev_priv(dev);
|
int ioaddr = dev->base_addr;
|
|
pr_warn("%s: transmit timed out, tx_status %2.2x status %4.4x\n",
|
dev->name, inb(ioaddr + TxStatus),
|
inw(ioaddr + EL3_STATUS));
|
/* Slight code bloat to be user friendly. */
|
if ((inb(ioaddr + TxStatus) & 0x88) == 0x88)
|
pr_warn("%s: Transmitter encountered 16 collisions -- network cable problem?\n",
|
dev->name);
|
#ifndef final_version
|
pr_debug(" Flags; bus-master %d, full %d; dirty %d current %d.\n",
|
vp->full_bus_master_tx, vp->tx_full, vp->dirty_tx,
|
vp->cur_tx);
|
pr_debug(" Down list %8.8x vs. %p.\n", inl(ioaddr + DownListPtr),
|
&vp->tx_ring[0]);
|
for (i = 0; i < TX_RING_SIZE; i++) {
|
pr_debug(" %d: %p length %8.8x status %8.8x\n", i,
|
&vp->tx_ring[i],
|
vp->tx_ring[i].length, vp->tx_ring[i].status);
|
}
|
#endif
|
/* Issue TX_RESET and TX_START commands. */
|
outw(TxReset, ioaddr + EL3_CMD);
|
for (i = 20; i >= 0; i--)
|
if (!(inw(ioaddr + EL3_STATUS) & CmdInProgress))
|
break;
|
outw(TxEnable, ioaddr + EL3_CMD);
|
netif_trans_update(dev); /* prevent tx timeout */
|
dev->stats.tx_errors++;
|
dev->stats.tx_dropped++;
|
netif_wake_queue(dev);
|
}
|
|
static netdev_tx_t corkscrew_start_xmit(struct sk_buff *skb,
|
struct net_device *dev)
|
{
|
struct corkscrew_private *vp = netdev_priv(dev);
|
int ioaddr = dev->base_addr;
|
|
/* Block a timer-based transmit from overlapping. */
|
|
netif_stop_queue(dev);
|
|
if (vp->full_bus_master_tx) { /* BOOMERANG bus-master */
|
/* Calculate the next Tx descriptor entry. */
|
int entry = vp->cur_tx % TX_RING_SIZE;
|
struct boom_tx_desc *prev_entry;
|
unsigned long flags;
|
int i;
|
|
if (vp->tx_full) /* No room to transmit with */
|
return NETDEV_TX_BUSY;
|
if (vp->cur_tx != 0)
|
prev_entry = &vp->tx_ring[(vp->cur_tx - 1) % TX_RING_SIZE];
|
else
|
prev_entry = NULL;
|
if (corkscrew_debug > 3)
|
pr_debug("%s: Trying to send a packet, Tx index %d.\n",
|
dev->name, vp->cur_tx);
|
/* vp->tx_full = 1; */
|
vp->tx_skbuff[entry] = skb;
|
vp->tx_ring[entry].next = 0;
|
vp->tx_ring[entry].addr = isa_virt_to_bus(skb->data);
|
vp->tx_ring[entry].length = skb->len | 0x80000000;
|
vp->tx_ring[entry].status = skb->len | 0x80000000;
|
|
spin_lock_irqsave(&vp->lock, flags);
|
outw(DownStall, ioaddr + EL3_CMD);
|
/* Wait for the stall to complete. */
|
for (i = 20; i >= 0; i--)
|
if ((inw(ioaddr + EL3_STATUS) & CmdInProgress) == 0)
|
break;
|
if (prev_entry)
|
prev_entry->next = isa_virt_to_bus(&vp->tx_ring[entry]);
|
if (inl(ioaddr + DownListPtr) == 0) {
|
outl(isa_virt_to_bus(&vp->tx_ring[entry]),
|
ioaddr + DownListPtr);
|
queued_packet++;
|
}
|
outw(DownUnstall, ioaddr + EL3_CMD);
|
spin_unlock_irqrestore(&vp->lock, flags);
|
|
vp->cur_tx++;
|
if (vp->cur_tx - vp->dirty_tx > TX_RING_SIZE - 1)
|
vp->tx_full = 1;
|
else { /* Clear previous interrupt enable. */
|
if (prev_entry)
|
prev_entry->status &= ~0x80000000;
|
netif_wake_queue(dev);
|
}
|
return NETDEV_TX_OK;
|
}
|
/* Put out the doubleword header... */
|
outl(skb->len, ioaddr + TX_FIFO);
|
dev->stats.tx_bytes += skb->len;
|
#ifdef VORTEX_BUS_MASTER
|
if (vp->bus_master) {
|
/* Set the bus-master controller to transfer the packet. */
|
outl((int) (skb->data), ioaddr + Wn7_MasterAddr);
|
outw((skb->len + 3) & ~3, ioaddr + Wn7_MasterLen);
|
vp->tx_skb = skb;
|
outw(StartDMADown, ioaddr + EL3_CMD);
|
/* queue will be woken at the DMADone interrupt. */
|
} else {
|
/* ... and the packet rounded to a doubleword. */
|
outsl(ioaddr + TX_FIFO, skb->data, (skb->len + 3) >> 2);
|
dev_kfree_skb(skb);
|
if (inw(ioaddr + TxFree) > 1536) {
|
netif_wake_queue(dev);
|
} else
|
/* Interrupt us when the FIFO has room for max-sized packet. */
|
outw(SetTxThreshold + (1536 >> 2),
|
ioaddr + EL3_CMD);
|
}
|
#else
|
/* ... and the packet rounded to a doubleword. */
|
outsl(ioaddr + TX_FIFO, skb->data, (skb->len + 3) >> 2);
|
dev_kfree_skb(skb);
|
if (inw(ioaddr + TxFree) > 1536) {
|
netif_wake_queue(dev);
|
} else
|
/* Interrupt us when the FIFO has room for max-sized packet. */
|
outw(SetTxThreshold + (1536 >> 2), ioaddr + EL3_CMD);
|
#endif /* bus master */
|
|
|
/* Clear the Tx status stack. */
|
{
|
short tx_status;
|
int i = 4;
|
|
while (--i > 0 && (tx_status = inb(ioaddr + TxStatus)) > 0) {
|
if (tx_status & 0x3C) { /* A Tx-disabling error occurred. */
|
if (corkscrew_debug > 2)
|
pr_debug("%s: Tx error, status %2.2x.\n",
|
dev->name, tx_status);
|
if (tx_status & 0x04)
|
dev->stats.tx_fifo_errors++;
|
if (tx_status & 0x38)
|
dev->stats.tx_aborted_errors++;
|
if (tx_status & 0x30) {
|
int j;
|
outw(TxReset, ioaddr + EL3_CMD);
|
for (j = 20; j >= 0; j--)
|
if (!(inw(ioaddr + EL3_STATUS) & CmdInProgress))
|
break;
|
}
|
outw(TxEnable, ioaddr + EL3_CMD);
|
}
|
outb(0x00, ioaddr + TxStatus); /* Pop the status stack. */
|
}
|
}
|
return NETDEV_TX_OK;
|
}
|
|
/* The interrupt handler does all of the Rx thread work and cleans up
|
after the Tx thread. */
|
|
static irqreturn_t corkscrew_interrupt(int irq, void *dev_id)
|
{
|
/* Use the now-standard shared IRQ implementation. */
|
struct net_device *dev = dev_id;
|
struct corkscrew_private *lp = netdev_priv(dev);
|
int ioaddr, status;
|
int latency;
|
int i = max_interrupt_work;
|
|
ioaddr = dev->base_addr;
|
latency = inb(ioaddr + Timer);
|
|
spin_lock(&lp->lock);
|
|
status = inw(ioaddr + EL3_STATUS);
|
|
if (corkscrew_debug > 4)
|
pr_debug("%s: interrupt, status %4.4x, timer %d.\n",
|
dev->name, status, latency);
|
if ((status & 0xE000) != 0xE000) {
|
static int donedidthis;
|
/* Some interrupt controllers store a bogus interrupt from boot-time.
|
Ignore a single early interrupt, but don't hang the machine for
|
other interrupt problems. */
|
if (donedidthis++ > 100) {
|
pr_err("%s: Bogus interrupt, bailing. Status %4.4x, start=%d.\n",
|
dev->name, status, netif_running(dev));
|
free_irq(dev->irq, dev);
|
dev->irq = -1;
|
}
|
}
|
|
do {
|
if (corkscrew_debug > 5)
|
pr_debug("%s: In interrupt loop, status %4.4x.\n",
|
dev->name, status);
|
if (status & RxComplete)
|
corkscrew_rx(dev);
|
|
if (status & TxAvailable) {
|
if (corkscrew_debug > 5)
|
pr_debug(" TX room bit was handled.\n");
|
/* There's room in the FIFO for a full-sized packet. */
|
outw(AckIntr | TxAvailable, ioaddr + EL3_CMD);
|
netif_wake_queue(dev);
|
}
|
if (status & DownComplete) {
|
unsigned int dirty_tx = lp->dirty_tx;
|
|
while (lp->cur_tx - dirty_tx > 0) {
|
int entry = dirty_tx % TX_RING_SIZE;
|
if (inl(ioaddr + DownListPtr) == isa_virt_to_bus(&lp->tx_ring[entry]))
|
break; /* It still hasn't been processed. */
|
if (lp->tx_skbuff[entry]) {
|
dev_consume_skb_irq(lp->tx_skbuff[entry]);
|
lp->tx_skbuff[entry] = NULL;
|
}
|
dirty_tx++;
|
}
|
lp->dirty_tx = dirty_tx;
|
outw(AckIntr | DownComplete, ioaddr + EL3_CMD);
|
if (lp->tx_full && (lp->cur_tx - dirty_tx <= TX_RING_SIZE - 1)) {
|
lp->tx_full = 0;
|
netif_wake_queue(dev);
|
}
|
}
|
#ifdef VORTEX_BUS_MASTER
|
if (status & DMADone) {
|
outw(0x1000, ioaddr + Wn7_MasterStatus); /* Ack the event. */
|
dev_consume_skb_irq(lp->tx_skb); /* Release the transferred buffer */
|
netif_wake_queue(dev);
|
}
|
#endif
|
if (status & UpComplete) {
|
boomerang_rx(dev);
|
outw(AckIntr | UpComplete, ioaddr + EL3_CMD);
|
}
|
if (status & (AdapterFailure | RxEarly | StatsFull)) {
|
/* Handle all uncommon interrupts at once. */
|
if (status & RxEarly) { /* Rx early is unused. */
|
corkscrew_rx(dev);
|
outw(AckIntr | RxEarly, ioaddr + EL3_CMD);
|
}
|
if (status & StatsFull) { /* Empty statistics. */
|
static int DoneDidThat;
|
if (corkscrew_debug > 4)
|
pr_debug("%s: Updating stats.\n", dev->name);
|
update_stats(ioaddr, dev);
|
/* DEBUG HACK: Disable statistics as an interrupt source. */
|
/* This occurs when we have the wrong media type! */
|
if (DoneDidThat == 0 && inw(ioaddr + EL3_STATUS) & StatsFull) {
|
int win, reg;
|
pr_notice("%s: Updating stats failed, disabling stats as an interrupt source.\n",
|
dev->name);
|
for (win = 0; win < 8; win++) {
|
EL3WINDOW(win);
|
pr_notice("Vortex window %d:", win);
|
for (reg = 0; reg < 16; reg++)
|
pr_cont(" %2.2x", inb(ioaddr + reg));
|
pr_cont("\n");
|
}
|
EL3WINDOW(7);
|
outw(SetIntrEnb | TxAvailable |
|
RxComplete | AdapterFailure |
|
UpComplete | DownComplete |
|
TxComplete, ioaddr + EL3_CMD);
|
DoneDidThat++;
|
}
|
}
|
if (status & AdapterFailure) {
|
/* Adapter failure requires Rx reset and reinit. */
|
outw(RxReset, ioaddr + EL3_CMD);
|
/* Set the Rx filter to the current state. */
|
set_rx_mode(dev);
|
outw(RxEnable, ioaddr + EL3_CMD); /* Re-enable the receiver. */
|
outw(AckIntr | AdapterFailure,
|
ioaddr + EL3_CMD);
|
}
|
}
|
|
if (--i < 0) {
|
pr_err("%s: Too much work in interrupt, status %4.4x. Disabling functions (%4.4x).\n",
|
dev->name, status, SetStatusEnb | ((~status) & 0x7FE));
|
/* Disable all pending interrupts. */
|
outw(SetStatusEnb | ((~status) & 0x7FE), ioaddr + EL3_CMD);
|
outw(AckIntr | 0x7FF, ioaddr + EL3_CMD);
|
break;
|
}
|
/* Acknowledge the IRQ. */
|
outw(AckIntr | IntReq | IntLatch, ioaddr + EL3_CMD);
|
|
} while ((status = inw(ioaddr + EL3_STATUS)) & (IntLatch | RxComplete));
|
|
spin_unlock(&lp->lock);
|
|
if (corkscrew_debug > 4)
|
pr_debug("%s: exiting interrupt, status %4.4x.\n", dev->name, status);
|
return IRQ_HANDLED;
|
}
|
|
static int corkscrew_rx(struct net_device *dev)
|
{
|
int ioaddr = dev->base_addr;
|
int i;
|
short rx_status;
|
|
if (corkscrew_debug > 5)
|
pr_debug(" In rx_packet(), status %4.4x, rx_status %4.4x.\n",
|
inw(ioaddr + EL3_STATUS), inw(ioaddr + RxStatus));
|
while ((rx_status = inw(ioaddr + RxStatus)) > 0) {
|
if (rx_status & 0x4000) { /* Error, update stats. */
|
unsigned char rx_error = inb(ioaddr + RxErrors);
|
if (corkscrew_debug > 2)
|
pr_debug(" Rx error: status %2.2x.\n",
|
rx_error);
|
dev->stats.rx_errors++;
|
if (rx_error & 0x01)
|
dev->stats.rx_over_errors++;
|
if (rx_error & 0x02)
|
dev->stats.rx_length_errors++;
|
if (rx_error & 0x04)
|
dev->stats.rx_frame_errors++;
|
if (rx_error & 0x08)
|
dev->stats.rx_crc_errors++;
|
if (rx_error & 0x10)
|
dev->stats.rx_length_errors++;
|
} else {
|
/* The packet length: up to 4.5K!. */
|
short pkt_len = rx_status & 0x1fff;
|
struct sk_buff *skb;
|
|
skb = netdev_alloc_skb(dev, pkt_len + 5 + 2);
|
if (corkscrew_debug > 4)
|
pr_debug("Receiving packet size %d status %4.4x.\n",
|
pkt_len, rx_status);
|
if (skb != NULL) {
|
skb_reserve(skb, 2); /* Align IP on 16 byte boundaries */
|
/* 'skb_put()' points to the start of sk_buff data area. */
|
insl(ioaddr + RX_FIFO,
|
skb_put(skb, pkt_len),
|
(pkt_len + 3) >> 2);
|
outw(RxDiscard, ioaddr + EL3_CMD); /* Pop top Rx packet. */
|
skb->protocol = eth_type_trans(skb, dev);
|
netif_rx(skb);
|
dev->stats.rx_packets++;
|
dev->stats.rx_bytes += pkt_len;
|
/* Wait a limited time to go to next packet. */
|
for (i = 200; i >= 0; i--)
|
if (! (inw(ioaddr + EL3_STATUS) & CmdInProgress))
|
break;
|
continue;
|
} else if (corkscrew_debug)
|
pr_debug("%s: Couldn't allocate a sk_buff of size %d.\n", dev->name, pkt_len);
|
}
|
outw(RxDiscard, ioaddr + EL3_CMD);
|
dev->stats.rx_dropped++;
|
/* Wait a limited time to skip this packet. */
|
for (i = 200; i >= 0; i--)
|
if (!(inw(ioaddr + EL3_STATUS) & CmdInProgress))
|
break;
|
}
|
return 0;
|
}
|
|
static int boomerang_rx(struct net_device *dev)
|
{
|
struct corkscrew_private *vp = netdev_priv(dev);
|
int entry = vp->cur_rx % RX_RING_SIZE;
|
int ioaddr = dev->base_addr;
|
int rx_status;
|
|
if (corkscrew_debug > 5)
|
pr_debug(" In boomerang_rx(), status %4.4x, rx_status %4.4x.\n",
|
inw(ioaddr + EL3_STATUS), inw(ioaddr + RxStatus));
|
while ((rx_status = vp->rx_ring[entry].status) & RxDComplete) {
|
if (rx_status & RxDError) { /* Error, update stats. */
|
unsigned char rx_error = rx_status >> 16;
|
if (corkscrew_debug > 2)
|
pr_debug(" Rx error: status %2.2x.\n",
|
rx_error);
|
dev->stats.rx_errors++;
|
if (rx_error & 0x01)
|
dev->stats.rx_over_errors++;
|
if (rx_error & 0x02)
|
dev->stats.rx_length_errors++;
|
if (rx_error & 0x04)
|
dev->stats.rx_frame_errors++;
|
if (rx_error & 0x08)
|
dev->stats.rx_crc_errors++;
|
if (rx_error & 0x10)
|
dev->stats.rx_length_errors++;
|
} else {
|
/* The packet length: up to 4.5K!. */
|
short pkt_len = rx_status & 0x1fff;
|
struct sk_buff *skb;
|
|
dev->stats.rx_bytes += pkt_len;
|
if (corkscrew_debug > 4)
|
pr_debug("Receiving packet size %d status %4.4x.\n",
|
pkt_len, rx_status);
|
|
/* Check if the packet is long enough to just accept without
|
copying to a properly sized skbuff. */
|
if (pkt_len < rx_copybreak &&
|
(skb = netdev_alloc_skb(dev, pkt_len + 4)) != NULL) {
|
skb_reserve(skb, 2); /* Align IP on 16 byte boundaries */
|
/* 'skb_put()' points to the start of sk_buff data area. */
|
skb_put_data(skb,
|
isa_bus_to_virt(vp->rx_ring[entry].addr),
|
pkt_len);
|
rx_copy++;
|
} else {
|
void *temp;
|
/* Pass up the skbuff already on the Rx ring. */
|
skb = vp->rx_skbuff[entry];
|
vp->rx_skbuff[entry] = NULL;
|
temp = skb_put(skb, pkt_len);
|
/* Remove this checking code for final release. */
|
if (isa_bus_to_virt(vp->rx_ring[entry].addr) != temp)
|
pr_warn("%s: Warning -- the skbuff addresses do not match in boomerang_rx: %p vs. %p / %p\n",
|
dev->name,
|
isa_bus_to_virt(vp->rx_ring[entry].addr),
|
skb->head, temp);
|
rx_nocopy++;
|
}
|
skb->protocol = eth_type_trans(skb, dev);
|
netif_rx(skb);
|
dev->stats.rx_packets++;
|
}
|
entry = (++vp->cur_rx) % RX_RING_SIZE;
|
}
|
/* Refill the Rx ring buffers. */
|
for (; vp->cur_rx - vp->dirty_rx > 0; vp->dirty_rx++) {
|
struct sk_buff *skb;
|
entry = vp->dirty_rx % RX_RING_SIZE;
|
if (vp->rx_skbuff[entry] == NULL) {
|
skb = netdev_alloc_skb(dev, PKT_BUF_SZ);
|
if (skb == NULL)
|
break; /* Bad news! */
|
skb_reserve(skb, 2); /* Align IP on 16 byte boundaries */
|
vp->rx_ring[entry].addr = isa_virt_to_bus(skb->data);
|
vp->rx_skbuff[entry] = skb;
|
}
|
vp->rx_ring[entry].status = 0; /* Clear complete bit. */
|
}
|
return 0;
|
}
|
|
static int corkscrew_close(struct net_device *dev)
|
{
|
struct corkscrew_private *vp = netdev_priv(dev);
|
int ioaddr = dev->base_addr;
|
int i;
|
|
netif_stop_queue(dev);
|
|
if (corkscrew_debug > 1) {
|
pr_debug("%s: corkscrew_close() status %4.4x, Tx status %2.2x.\n",
|
dev->name, inw(ioaddr + EL3_STATUS),
|
inb(ioaddr + TxStatus));
|
pr_debug("%s: corkscrew close stats: rx_nocopy %d rx_copy %d tx_queued %d.\n",
|
dev->name, rx_nocopy, rx_copy, queued_packet);
|
}
|
|
del_timer_sync(&vp->timer);
|
|
/* Turn off statistics ASAP. We update lp->stats below. */
|
outw(StatsDisable, ioaddr + EL3_CMD);
|
|
/* Disable the receiver and transmitter. */
|
outw(RxDisable, ioaddr + EL3_CMD);
|
outw(TxDisable, ioaddr + EL3_CMD);
|
|
if (dev->if_port == XCVR_10base2)
|
/* Turn off thinnet power. Green! */
|
outw(StopCoax, ioaddr + EL3_CMD);
|
|
free_irq(dev->irq, dev);
|
|
outw(SetIntrEnb | 0x0000, ioaddr + EL3_CMD);
|
|
update_stats(ioaddr, dev);
|
if (vp->full_bus_master_rx) { /* Free Boomerang bus master Rx buffers. */
|
outl(0, ioaddr + UpListPtr);
|
for (i = 0; i < RX_RING_SIZE; i++)
|
if (vp->rx_skbuff[i]) {
|
dev_kfree_skb(vp->rx_skbuff[i]);
|
vp->rx_skbuff[i] = NULL;
|
}
|
}
|
if (vp->full_bus_master_tx) { /* Free Boomerang bus master Tx buffers. */
|
outl(0, ioaddr + DownListPtr);
|
for (i = 0; i < TX_RING_SIZE; i++)
|
if (vp->tx_skbuff[i]) {
|
dev_kfree_skb(vp->tx_skbuff[i]);
|
vp->tx_skbuff[i] = NULL;
|
}
|
}
|
|
return 0;
|
}
|
|
static struct net_device_stats *corkscrew_get_stats(struct net_device *dev)
|
{
|
struct corkscrew_private *vp = netdev_priv(dev);
|
unsigned long flags;
|
|
if (netif_running(dev)) {
|
spin_lock_irqsave(&vp->lock, flags);
|
update_stats(dev->base_addr, dev);
|
spin_unlock_irqrestore(&vp->lock, flags);
|
}
|
return &dev->stats;
|
}
|
|
/* Update statistics.
|
Unlike with the EL3 we need not worry about interrupts changing
|
the window setting from underneath us, but we must still guard
|
against a race condition with a StatsUpdate interrupt updating the
|
table. This is done by checking that the ASM (!) code generated uses
|
atomic updates with '+='.
|
*/
|
static void update_stats(int ioaddr, struct net_device *dev)
|
{
|
/* Unlike the 3c5x9 we need not turn off stats updates while reading. */
|
/* Switch to the stats window, and read everything. */
|
EL3WINDOW(6);
|
dev->stats.tx_carrier_errors += inb(ioaddr + 0);
|
dev->stats.tx_heartbeat_errors += inb(ioaddr + 1);
|
/* Multiple collisions. */ inb(ioaddr + 2);
|
dev->stats.collisions += inb(ioaddr + 3);
|
dev->stats.tx_window_errors += inb(ioaddr + 4);
|
dev->stats.rx_fifo_errors += inb(ioaddr + 5);
|
dev->stats.tx_packets += inb(ioaddr + 6);
|
dev->stats.tx_packets += (inb(ioaddr + 9) & 0x30) << 4;
|
/* Rx packets */ inb(ioaddr + 7);
|
/* Must read to clear */
|
/* Tx deferrals */ inb(ioaddr + 8);
|
/* Don't bother with register 9, an extension of registers 6&7.
|
If we do use the 6&7 values the atomic update assumption above
|
is invalid. */
|
inw(ioaddr + 10); /* Total Rx and Tx octets. */
|
inw(ioaddr + 12);
|
/* New: On the Vortex we must also clear the BadSSD counter. */
|
EL3WINDOW(4);
|
inb(ioaddr + 12);
|
|
/* We change back to window 7 (not 1) with the Vortex. */
|
EL3WINDOW(7);
|
}
|
|
/* This new version of set_rx_mode() supports v1.4 kernels.
|
The Vortex chip has no documented multicast filter, so the only
|
multicast setting is to receive all multicast frames. At least
|
the chip has a very clean way to set the mode, unlike many others. */
|
static void set_rx_mode(struct net_device *dev)
|
{
|
int ioaddr = dev->base_addr;
|
unsigned short new_mode;
|
|
if (dev->flags & IFF_PROMISC) {
|
if (corkscrew_debug > 3)
|
pr_debug("%s: Setting promiscuous mode.\n",
|
dev->name);
|
new_mode = SetRxFilter | RxStation | RxMulticast | RxBroadcast | RxProm;
|
} else if (!netdev_mc_empty(dev) || dev->flags & IFF_ALLMULTI) {
|
new_mode = SetRxFilter | RxStation | RxMulticast | RxBroadcast;
|
} else
|
new_mode = SetRxFilter | RxStation | RxBroadcast;
|
|
outw(new_mode, ioaddr + EL3_CMD);
|
}
|
|
static void netdev_get_drvinfo(struct net_device *dev,
|
struct ethtool_drvinfo *info)
|
{
|
strlcpy(info->driver, DRV_NAME, sizeof(info->driver));
|
snprintf(info->bus_info, sizeof(info->bus_info), "ISA 0x%lx",
|
dev->base_addr);
|
}
|
|
static u32 netdev_get_msglevel(struct net_device *dev)
|
{
|
return corkscrew_debug;
|
}
|
|
static void netdev_set_msglevel(struct net_device *dev, u32 level)
|
{
|
corkscrew_debug = level;
|
}
|
|
static const struct ethtool_ops netdev_ethtool_ops = {
|
.get_drvinfo = netdev_get_drvinfo,
|
.get_msglevel = netdev_get_msglevel,
|
.set_msglevel = netdev_set_msglevel,
|
};
|
|
|
#ifdef MODULE
|
void cleanup_module(void)
|
{
|
while (!list_empty(&root_corkscrew_dev)) {
|
struct net_device *dev;
|
struct corkscrew_private *vp;
|
|
vp = list_entry(root_corkscrew_dev.next,
|
struct corkscrew_private, list);
|
dev = vp->our_dev;
|
unregister_netdev(dev);
|
cleanup_card(dev);
|
free_netdev(dev);
|
}
|
}
|
#endif /* MODULE */
|
