// SPDX-License-Identifier: GPL-1.0+
/* 82596.c: A generic 82596 ethernet driver for linux. */
/*
Based on Apricot . c
Written 1994 by Mark Evans .
This driver is for the Apricot 82596 bus - master interface
Modularised 12 / 94 Mark Evans
Modified to support the 82596 ethernet chips on 680 x0 VME boards .
by Richard Hirst < richard @ sleepie . demon . co . uk >
Renamed to be 82596 . c
980825 : Changed to receive directly in to sk_buffs which are
allocated at open ( ) time . Eliminates copy on incoming frames
( small ones are still copied ) . Shared data now held in a
non - cached page , so we can run on 68060 in copyback mode .
TBD :
* look at deferring rx frames rather than discarding ( as per tulip )
* handle tx ring full as per tulip
* performance test to tune rx_copybreak
Most of my modifications relate to the braindead big - endian
implementation by Intel . When the i596 is operating in
' big - endian ' mode , it thinks a 32 bit value of 0 x12345678
should be stored as 0 x56781234 . This is a real pain , when
you have linked lists which are shared by the 680 x0 and the
i596 .
Driver skeleton
Written 1993 by Donald Becker .
Copyright 1993 United States Government as represented by the Director ,
National Security Agency .
The author may be reached as becker @ scyld . com , or C / O
Scyld Computing Corporation , 410 Severn Ave . , Suite 210 , Annapolis MD 21403
*/
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/string.h>
#include <linux/errno.h>
#include <linux/ioport.h>
#include <linux/interrupt.h>
#include <linux/delay.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/skbuff.h>
#include <linux/init.h>
#include <linux/bitops.h>
#include <linux/gfp.h>
#include <linux/pgtable.h>
#include <asm /io.h>
#include <asm /dma.h>
#include <asm /cacheflush.h>
static char version[] __initdata =
"82596.c $Revision: 1.5 $\n" ;
#define DRV_NAME "82596"
/* DEBUG flags
*/
#define DEB_INIT 0 x0001
#define DEB_PROBE 0 x0002
#define DEB_SERIOUS 0 x0004
#define DEB_ERRORS 0 x0008
#define DEB_MULTI 0 x0010
#define DEB_TDR 0 x0020
#define DEB_OPEN 0 x0040
#define DEB_RESET 0 x0080
#define DEB_ADDCMD 0 x0100
#define DEB_STATUS 0 x0200
#define DEB_STARTTX 0 x0400
#define DEB_RXADDR 0 x0800
#define DEB_TXADDR 0 x1000
#define DEB_RXFRAME 0 x2000
#define DEB_INTS 0 x4000
#define DEB_STRUCT 0 x8000
#define DEB_ANY 0 xffff
#define DEB(x,y) if (i596_debug & (x)) y
#if IS_ENABLED(CONFIG_MVME16x_NET)
#define ENABLE_MVME16x_NET
#endif
#if IS_ENABLED(CONFIG_BVME6000_NET)
#define ENABLE_BVME6000_NET
#endif
#ifdef ENABLE_MVME16x_NET
#include <asm /mvme16xhw.h>
#endif
#ifdef ENABLE_BVME6000_NET
#include <asm /bvme6000hw.h>
#endif
/*
* Define various macros for Channel Attention , word swapping etc . , dependent
* on architecture . MVME and BVME are 680 x0 based , otherwise it is Intel .
*/
#ifdef __mc68000__
#define WSWAPrfd(x) ((struct i596_rfd *) (((u32)(x)<<16 ) | ((((u32)(x)))>>16 )))
#define WSWAPrbd(x) ((struct i596_rbd *) (((u32)(x)<<16 ) | ((((u32)(x)))>>16 )))
#define WSWAPiscp(x) ((struct i596_iscp *)(((u32)(x)<<16 ) | ((((u32)(x)))>>16 )))
#define WSWAPscb(x) ((struct i596_scb *) (((u32)(x)<<16 ) | ((((u32)(x)))>>16 )))
#define WSWAPcmd(x) ((struct i596_cmd *) (((u32)(x)<<16 ) | ((((u32)(x)))>>16 )))
#define WSWAPtbd(x) ((struct i596_tbd *) (((u32)(x)<<16 ) | ((((u32)(x)))>>16 )))
#define WSWAPchar(x) ((char *) (((u32)(x)<<16 ) | ((((u32)(x)))>>16 )))
#define ISCP_BUSY 0 x00010000
#else
#error 82596 .c: unknown architecture
#endif
/*
* These were the intel versions , left here for reference . There
* are currently no x86 users of this legacy i82596 chip .
*/
#if 0
#define WSWAPrfd(x) ((struct i596_rfd *)((long )x))
#define WSWAPrbd(x) ((struct i596_rbd *)((long )x))
#define WSWAPiscp(x) ((struct i596_iscp *)((long )x))
#define WSWAPscb(x) ((struct i596_scb *)((long )x))
#define WSWAPcmd(x) ((struct i596_cmd *)((long )x))
#define WSWAPtbd(x) ((struct i596_tbd *)((long )x))
#define WSWAPchar(x) ((char *)((long )x))
#define ISCP_BUSY 0 x0001
#endif
/*
* The MPU_PORT command allows direct access to the 82596 . With PORT access
* the following commands are available ( p5 - 18 ) . The 32 - bit port command
* must be word - swapped with the most significant word written first .
* This only applies to VME boards .
*/
#define PORT_RESET 0 x00 /* reset 82596 */
#define PORT_SELFTEST 0 x01 /* selftest */
#define PORT_ALTSCP 0 x02 /* alternate SCB address */
#define PORT_ALTDUMP 0 x03 /* Alternate DUMP address */
static int i596_debug = (DEB_SERIOUS|DEB_PROBE);
MODULE_AUTHOR("Richard Hirst" );
MODULE_DESCRIPTION("i82596 driver" );
MODULE_LICENSE("GPL" );
module_param(i596_debug, int , 0 );
MODULE_PARM_DESC(i596_debug, "i82596 debug mask" );
/* Copy frames shorter than rx_copybreak, otherwise pass on up in
* a full sized sk_buff . Value of 100 stolen from tulip . c ( ! alpha ) .
*/
static int rx_copybreak = 100 ;
#define PKT_BUF_SZ 1536
#define MAX_MC_CNT 64
#define I596_TOTAL_SIZE 17
#define I596_NULL ((void *)0 xffffffff)
#define CMD_EOL 0 x8000 /* The last command of the list, stop. */
#define CMD_SUSP 0 x4000 /* Suspend after doing cmd. */
#define CMD_INTR 0 x2000 /* Interrupt after doing cmd. */
#define CMD_FLEX 0 x0008 /* Enable flexible memory model */
enum commands {
CmdNOp = 0 , CmdSASetup = 1 , CmdConfigure = 2 , CmdMulticastList = 3 ,
CmdTx = 4 , CmdTDR = 5 , CmdDump = 6 , CmdDiagnose = 7
};
#define STAT_C 0 x8000 /* Set to 0 after execution */
#define STAT_B 0 x4000 /* Command being executed */
#define STAT_OK 0 x2000 /* Command executed ok */
#define STAT_A 0 x1000 /* Command aborted */
#define CUC_START 0 x0100
#define CUC_RESUME 0 x0200
#define CUC_SUSPEND 0 x0300
#define CUC_ABORT 0 x0400
#define RX_START 0 x0010
#define RX_RESUME 0 x0020
#define RX_SUSPEND 0 x0030
#define RX_ABORT 0 x0040
#define TX_TIMEOUT (HZ/20 )
struct i596_reg {
unsigned short porthi;
unsigned short portlo;
unsigned long ca;
};
#define EOF 0 x8000
#define SIZE_MASK 0 x3fff
struct i596_tbd {
unsigned short size;
unsigned short pad;
struct i596_tbd *next;
char *data;
};
/* The command structure has two 'next' pointers; v_next is the address of
* the next command as seen by the CPU , b_next is the address of the next
* command as seen by the 82596 . The b_next pointer , as used by the 82596
* always references the status field of the next command , rather than the
* v_next field , because the 82596 is unaware of v_next . It may seem more
* logical to put v_next at the end of the structure , but we cannot do that
* because the 82596 expects other fields to be there , depending on command
* type .
*/
struct i596_cmd {
struct i596_cmd *v_next; /* Address from CPUs viewpoint */
unsigned short status;
unsigned short command;
struct i596_cmd *b_next; /* Address from i596 viewpoint */
};
struct tx_cmd {
struct i596_cmd cmd;
struct i596_tbd *tbd;
unsigned short size;
unsigned short pad;
struct sk_buff *skb; /* So we can free it after tx */
};
struct tdr_cmd {
struct i596_cmd cmd;
unsigned short status;
unsigned short pad;
};
struct mc_cmd {
struct i596_cmd cmd;
short mc_cnt;
char mc_addrs[MAX_MC_CNT*6 ];
};
struct sa_cmd {
struct i596_cmd cmd;
char eth_addr[8 ];
};
struct cf_cmd {
struct i596_cmd cmd;
char i596_config[16 ];
};
struct i596_rfd {
unsigned short stat;
unsigned short cmd;
struct i596_rfd *b_next; /* Address from i596 viewpoint */
struct i596_rbd *rbd;
unsigned short count;
unsigned short size;
struct i596_rfd *v_next; /* Address from CPUs viewpoint */
struct i596_rfd *v_prev;
};
struct i596_rbd {
unsigned short count;
unsigned short zero1;
struct i596_rbd *b_next;
unsigned char *b_data; /* Address from i596 viewpoint */
unsigned short size;
unsigned short zero2;
struct sk_buff *skb;
struct i596_rbd *v_next;
struct i596_rbd *b_addr; /* This rbd addr from i596 view */
unsigned char *v_data; /* Address from CPUs viewpoint */
};
#define TX_RING_SIZE 64
#define RX_RING_SIZE 16
struct i596_scb {
unsigned short status;
unsigned short command;
struct i596_cmd *cmd;
struct i596_rfd *rfd;
unsigned long crc_err;
unsigned long align_err;
unsigned long resource_err;
unsigned long over_err;
unsigned long rcvdt_err;
unsigned long short_err;
unsigned short t_on;
unsigned short t_off;
};
struct i596_iscp {
unsigned long stat;
struct i596_scb *scb;
};
struct i596_scp {
unsigned long sysbus;
unsigned long pad;
struct i596_iscp *iscp;
};
struct i596_private {
volatile struct i596_scp scp;
volatile struct i596_iscp iscp;
volatile struct i596_scb scb;
struct sa_cmd sa_cmd;
struct cf_cmd cf_cmd;
struct tdr_cmd tdr_cmd;
struct mc_cmd mc_cmd;
unsigned long stat;
int last_restart __attribute__((aligned(4 )));
struct i596_rfd *rfd_head;
struct i596_rbd *rbd_head;
struct i596_cmd *cmd_tail;
struct i596_cmd *cmd_head;
int cmd_backlog;
unsigned long last_cmd;
struct i596_rfd rfds[RX_RING_SIZE];
struct i596_rbd rbds[RX_RING_SIZE];
struct tx_cmd tx_cmds[TX_RING_SIZE];
struct i596_tbd tbds[TX_RING_SIZE];
int next_tx_cmd;
spinlock_t lock;
};
static char init_setup[] =
{
0 x8E, /* length, prefetch on */
0 xC8, /* fifo to 8, monitor off */
#ifdef CONFIG_VME
0 xc0, /* don't save bad frames */
#else
0 x80, /* don't save bad frames */
#endif
0 x2E, /* No source address insertion, 8 byte preamble */
0 x00, /* priority and backoff defaults */
0 x60, /* interframe spacing */
0 x00, /* slot time LSB */
0 xf2, /* slot time and retries */
0 x00, /* promiscuous mode */
0 x00, /* collision detect */
0 x40, /* minimum frame length */
0 xff,
0 x00,
0 x7f /* *multi IA */ };
static int i596_open(struct net_device *dev);
static netdev_tx_t i596_start_xmit(struct sk_buff *skb, struct net_device *dev);
static irqreturn_t i596_interrupt(int irq, void *dev_id);
static int i596_close(struct net_device *dev);
static void i596_add_cmd(struct net_device *dev, struct i596_cmd *cmd);
static void i596_tx_timeout (struct net_device *dev, unsigned int txqueue);
static void print_eth(unsigned char *buf, char *str);
static void set_multicast_list(struct net_device *dev);
static int rx_ring_size = RX_RING_SIZE;
static int ticks_limit = 25 ;
static int max_cmd_backlog = TX_RING_SIZE-1 ;
static inline void CA(struct net_device *dev)
{
#ifdef ENABLE_MVME16x_NET
if (MACH_IS_MVME16x) {
((struct i596_reg *) dev->base_addr)->ca = 1 ;
}
#endif
#ifdef ENABLE_BVME6000_NET
if (MACH_IS_BVME6000) {
volatile u32 i;
i = *(volatile u32 *) (dev->base_addr);
}
#endif
}
static inline void MPU_PORT(struct net_device *dev, int c, volatile void *x)
{
#ifdef ENABLE_MVME16x_NET
if (MACH_IS_MVME16x) {
struct i596_reg *p = (struct i596_reg *) (dev->base_addr);
p->porthi = ((c) | (u32) (x)) & 0 xffff;
p->portlo = ((c) | (u32) (x)) >> 16 ;
}
#endif
#ifdef ENABLE_BVME6000_NET
if (MACH_IS_BVME6000) {
u32 v = (u32) (c) | (u32) (x);
v = ((u32) (v) << 16 ) | ((u32) (v) >> 16 );
*(volatile u32 *) dev->base_addr = v;
udelay(1 );
*(volatile u32 *) dev->base_addr = v;
}
#endif
}
static inline int wait_istat(struct net_device *dev, struct i596_private *lp, int delcnt, char *str)
{
while (--delcnt && lp->iscp.stat)
udelay(10 );
if (!delcnt) {
printk(KERN_ERR "%s: %s, status %4.4x, cmd %4.4x.\n" ,
dev->name, str, lp->scb.status, lp->scb.command);
return -1 ;
}
else
return 0 ;
}
static inline int wait_cmd(struct net_device *dev, struct i596_private *lp, int delcnt, char *str)
{
while (--delcnt && lp->scb.command)
udelay(10 );
if (!delcnt) {
printk(KERN_ERR "%s: %s, status %4.4x, cmd %4.4x.\n" ,
dev->name, str, lp->scb.status, lp->scb.command);
return -1 ;
}
else
return 0 ;
}
static inline int wait_cfg(struct net_device *dev, struct i596_cmd *cmd, int delcnt, char *str)
{
volatile struct i596_cmd *c = cmd;
while (--delcnt && c->command)
udelay(10 );
if (!delcnt) {
printk(KERN_ERR "%s: %s.\n" , dev->name, str);
return -1 ;
}
else
return 0 ;
}
static void i596_display_data(struct net_device *dev)
{
struct i596_private *lp = dev->ml_priv;
struct i596_cmd *cmd;
struct i596_rfd *rfd;
struct i596_rbd *rbd;
printk(KERN_ERR "lp and scp at %p, .sysbus = %08lx, .iscp = %p\n" ,
&lp->scp, lp->scp.sysbus, lp->scp.iscp);
printk(KERN_ERR "iscp at %p, iscp.stat = %08lx, .scb = %p\n" ,
&lp->iscp, lp->iscp.stat, lp->iscp.scb);
printk(KERN_ERR "scb at %p, scb.status = %04x, .command = %04x,"
" .cmd = %p, .rfd = %p\n" ,
&lp->scb, lp->scb.status, lp->scb.command,
lp->scb.cmd, lp->scb.rfd);
printk(KERN_ERR " errors: crc %lx, align %lx, resource %lx,"
" over %lx, rcvdt %lx, short %lx\n" ,
lp->scb.crc_err, lp->scb.align_err, lp->scb.resource_err,
lp->scb.over_err, lp->scb.rcvdt_err, lp->scb.short_err);
cmd = lp->cmd_head;
while (cmd != I596_NULL) {
printk(KERN_ERR "cmd at %p, .status = %04x, .command = %04x, .b_next = %p\n" ,
cmd, cmd->status, cmd->command, cmd->b_next);
cmd = cmd->v_next;
}
rfd = lp->rfd_head;
printk(KERN_ERR "rfd_head = %p\n" , rfd);
do {
printk(KERN_ERR " %p .stat %04x, .cmd %04x, b_next %p, rbd %p,"
" count %04x\n" ,
rfd, rfd->stat, rfd->cmd, rfd->b_next, rfd->rbd,
rfd->count);
rfd = rfd->v_next;
} while (rfd != lp->rfd_head);
rbd = lp->rbd_head;
printk(KERN_ERR "rbd_head = %p\n" , rbd);
do {
printk(KERN_ERR " %p .count %04x, b_next %p, b_data %p, size %04x\n" ,
rbd, rbd->count, rbd->b_next, rbd->b_data, rbd->size);
rbd = rbd->v_next;
} while (rbd != lp->rbd_head);
}
#if defined (ENABLE_MVME16x_NET) || defined (ENABLE_BVME6000_NET)
static irqreturn_t i596_error(int irq, void *dev_id)
{
struct net_device *dev = dev_id;
#ifdef ENABLE_MVME16x_NET
if (MACH_IS_MVME16x) {
volatile unsigned char *pcc2 = (unsigned char *) 0 xfff42000;
pcc2[0 x28] = 1 ;
pcc2[0 x2b] = 0 x1d;
}
#endif
#ifdef ENABLE_BVME6000_NET
if (MACH_IS_BVME6000) {
volatile unsigned char *ethirq = (unsigned char *) BVME_ETHIRQ_REG;
*ethirq = 1 ;
*ethirq = 3 ;
}
#endif
printk(KERN_ERR "%s: Error interrupt\n" , dev->name);
i596_display_data(dev);
return IRQ_HANDLED;
}
#endif
static inline void remove_rx_bufs(struct net_device *dev)
{
struct i596_private *lp = dev->ml_priv;
struct i596_rbd *rbd;
int i;
for (i = 0 , rbd = lp->rbds; i < rx_ring_size; i++, rbd++) {
if (rbd->skb == NULL)
break ;
dev_kfree_skb(rbd->skb);
rbd->skb = NULL;
}
}
static inline int init_rx_bufs(struct net_device *dev)
{
struct i596_private *lp = dev->ml_priv;
int i;
struct i596_rfd *rfd;
struct i596_rbd *rbd;
/* First build the Receive Buffer Descriptor List */
for (i = 0 , rbd = lp->rbds; i < rx_ring_size; i++, rbd++) {
struct sk_buff *skb = netdev_alloc_skb(dev, PKT_BUF_SZ);
if (skb == NULL) {
remove_rx_bufs(dev);
return -ENOMEM;
}
rbd->v_next = rbd+1 ;
rbd->b_next = WSWAPrbd(virt_to_bus(rbd+1 ));
rbd->b_addr = WSWAPrbd(virt_to_bus(rbd));
rbd->skb = skb;
rbd->v_data = skb->data;
rbd->b_data = WSWAPchar(virt_to_bus(skb->data));
rbd->size = PKT_BUF_SZ;
#ifdef __mc68000__
cache_clear(virt_to_phys(skb->data), PKT_BUF_SZ);
#endif
}
lp->rbd_head = lp->rbds;
rbd = lp->rbds + rx_ring_size - 1 ;
rbd->v_next = lp->rbds;
rbd->b_next = WSWAPrbd(virt_to_bus(lp->rbds));
/* Now build the Receive Frame Descriptor List */
for (i = 0 , rfd = lp->rfds; i < rx_ring_size; i++, rfd++) {
rfd->rbd = I596_NULL;
rfd->v_next = rfd+1 ;
rfd->v_prev = rfd-1 ;
rfd->b_next = WSWAPrfd(virt_to_bus(rfd+1 ));
rfd->cmd = CMD_FLEX;
}
lp->rfd_head = lp->rfds;
lp->scb.rfd = WSWAPrfd(virt_to_bus(lp->rfds));
rfd = lp->rfds;
rfd->rbd = lp->rbd_head;
rfd->v_prev = lp->rfds + rx_ring_size - 1 ;
rfd = lp->rfds + rx_ring_size - 1 ;
rfd->v_next = lp->rfds;
rfd->b_next = WSWAPrfd(virt_to_bus(lp->rfds));
rfd->cmd = CMD_EOL|CMD_FLEX;
return 0 ;
}
static void rebuild_rx_bufs(struct net_device *dev)
{
struct i596_private *lp = dev->ml_priv;
int i;
/* Ensure rx frame/buffer descriptors are tidy */
for (i = 0 ; i < rx_ring_size; i++) {
lp->rfds[i].rbd = I596_NULL;
lp->rfds[i].cmd = CMD_FLEX;
}
lp->rfds[rx_ring_size-1 ].cmd = CMD_EOL|CMD_FLEX;
lp->rfd_head = lp->rfds;
lp->scb.rfd = WSWAPrfd(virt_to_bus(lp->rfds));
lp->rbd_head = lp->rbds;
lp->rfds[0 ].rbd = WSWAPrbd(virt_to_bus(lp->rbds));
}
static int init_i596_mem(struct net_device *dev)
{
struct i596_private *lp = dev->ml_priv;
unsigned long flags;
MPU_PORT(dev, PORT_RESET, NULL);
udelay(100 ); /* Wait 100us - seems to help */
#if defined (ENABLE_MVME16x_NET) || defined (ENABLE_BVME6000_NET)
#ifdef ENABLE_MVME16x_NET
if (MACH_IS_MVME16x) {
volatile unsigned char *pcc2 = (unsigned char *) 0 xfff42000;
/* Disable all ints for now */
pcc2[0 x28] = 1 ;
pcc2[0 x2a] = 0 x48;
/* Following disables snooping. Snooping is not required
* as we make appropriate use of non - cached pages for
* shared data , and cache_push / cache_clear .
*/
pcc2[0 x2b] = 0 x08;
}
#endif
#ifdef ENABLE_BVME6000_NET
if (MACH_IS_BVME6000) {
volatile unsigned char *ethirq = (unsigned char *) BVME_ETHIRQ_REG;
*ethirq = 1 ;
}
#endif
/* change the scp address */
MPU_PORT(dev, PORT_ALTSCP, (void *)virt_to_bus((void *)&lp->scp));
#endif
lp->last_cmd = jiffies;
#ifdef ENABLE_MVME16x_NET
if (MACH_IS_MVME16x)
lp->scp.sysbus = 0 x00000054;
#endif
#ifdef ENABLE_BVME6000_NET
if (MACH_IS_BVME6000)
lp->scp.sysbus = 0 x0000004c;
#endif
lp->scp.iscp = WSWAPiscp(virt_to_bus((void *)&lp->iscp));
lp->iscp.scb = WSWAPscb(virt_to_bus((void *)&lp->scb));
lp->iscp.stat = ISCP_BUSY;
lp->cmd_backlog = 0 ;
lp->cmd_head = lp->scb.cmd = I596_NULL;
#ifdef ENABLE_BVME6000_NET
if (MACH_IS_BVME6000) {
lp->scb.t_on = 7 * 25 ;
lp->scb.t_off = 1 * 25 ;
}
#endif
DEB(DEB_INIT,printk(KERN_DEBUG "%s: starting i82596.\n" , dev->name));
CA(dev);
if (wait_istat(dev,lp,1000 ,"initialization timed out" ))
goto failed;
DEB(DEB_INIT,printk(KERN_DEBUG "%s: i82596 initialization successful\n" , dev->name));
/* Ensure rx frame/buffer descriptors are tidy */
rebuild_rx_bufs(dev);
lp->scb.command = 0 ;
#ifdef ENABLE_MVME16x_NET
if (MACH_IS_MVME16x) {
volatile unsigned char *pcc2 = (unsigned char *) 0 xfff42000;
/* Enable ints, etc. now */
pcc2[0 x2a] = 0 x55; /* Edge sensitive */
pcc2[0 x2b] = 0 x15;
}
#endif
#ifdef ENABLE_BVME6000_NET
if (MACH_IS_BVME6000) {
volatile unsigned char *ethirq = (unsigned char *) BVME_ETHIRQ_REG;
*ethirq = 3 ;
}
#endif
DEB(DEB_INIT,printk(KERN_DEBUG "%s: queuing CmdConfigure\n" , dev->name));
memcpy(lp->cf_cmd.i596_config, init_setup, 14 );
lp->cf_cmd.cmd.command = CmdConfigure;
i596_add_cmd(dev, &lp->cf_cmd.cmd);
DEB(DEB_INIT,printk(KERN_DEBUG "%s: queuing CmdSASetup\n" , dev->name));
memcpy(lp->sa_cmd.eth_addr, dev->dev_addr, ETH_ALEN);
lp->sa_cmd.cmd.command = CmdSASetup;
i596_add_cmd(dev, &lp->sa_cmd.cmd);
DEB(DEB_INIT,printk(KERN_DEBUG "%s: queuing CmdTDR\n" , dev->name));
lp->tdr_cmd.cmd.command = CmdTDR;
i596_add_cmd(dev, &lp->tdr_cmd.cmd);
spin_lock_irqsave (&lp->lock, flags);
if (wait_cmd(dev,lp,1000 ,"timed out waiting to issue RX_START" )) {
spin_unlock_irqrestore (&lp->lock, flags);
goto failed;
}
DEB(DEB_INIT,printk(KERN_DEBUG "%s: Issuing RX_START\n" , dev->name));
lp->scb.command = RX_START;
CA(dev);
spin_unlock_irqrestore (&lp->lock, flags);
if (wait_cmd(dev,lp,1000 ,"RX_START not processed" ))
goto failed;
DEB(DEB_INIT,printk(KERN_DEBUG "%s: Receive unit started OK\n" , dev->name));
return 0 ;
failed:
printk(KERN_CRIT "%s: Failed to initialise 82596\n" , dev->name);
MPU_PORT(dev, PORT_RESET, NULL);
return -1 ;
}
static inline int i596_rx(struct net_device *dev)
{
struct i596_private *lp = dev->ml_priv;
struct i596_rfd *rfd;
struct i596_rbd *rbd;
int frames = 0 ;
DEB(DEB_RXFRAME,printk(KERN_DEBUG "i596_rx(), rfd_head %p, rbd_head %p\n" ,
lp->rfd_head, lp->rbd_head));
rfd = lp->rfd_head; /* Ref next frame to check */
while ((rfd->stat) & STAT_C) { /* Loop while complete frames */
if (rfd->rbd == I596_NULL)
rbd = I596_NULL;
else if (rfd->rbd == lp->rbd_head->b_addr)
rbd = lp->rbd_head;
else {
printk(KERN_CRIT "%s: rbd chain broken!\n" , dev->name);
/* XXX Now what? */
rbd = I596_NULL;
}
DEB(DEB_RXFRAME, printk(KERN_DEBUG " rfd %p, rfd.rbd %p, rfd.stat %04x\n" ,
rfd, rfd->rbd, rfd->stat));
if (rbd != I596_NULL && ((rfd->stat) & STAT_OK)) {
/* a good frame */
int pkt_len = rbd->count & 0 x3fff;
struct sk_buff *skb = rbd->skb;
int rx_in_place = 0 ;
DEB(DEB_RXADDR,print_eth(rbd->v_data, "received" ));
frames++;
/* Check if the packet is long enough to just accept
* without copying to a properly sized skbuff .
*/
if (pkt_len > rx_copybreak) {
struct sk_buff *newskb;
/* Get fresh skbuff to replace filled one. */
newskb = netdev_alloc_skb(dev, PKT_BUF_SZ);
if (newskb == NULL) {
skb = NULL; /* drop pkt */
goto memory_squeeze;
}
/* Pass up the skb already on the Rx ring. */
skb_put(skb, pkt_len);
rx_in_place = 1 ;
rbd->skb = newskb;
rbd->v_data = newskb->data;
rbd->b_data = WSWAPchar(virt_to_bus(newskb->data));
#ifdef __mc68000__
cache_clear(virt_to_phys(newskb->data), PKT_BUF_SZ);
#endif
} else {
skb = netdev_alloc_skb(dev, pkt_len + 2 );
}
memory_squeeze:
if (skb == NULL) {
/* XXX tulip.c can defer packets here!! */
dev->stats.rx_dropped++;
} else {
if (!rx_in_place) {
/* 16 byte align the data fields */
skb_reserve(skb, 2 );
skb_put_data(skb, rbd->v_data,
pkt_len);
}
skb->protocol=eth_type_trans(skb,dev);
skb->len = pkt_len;
#ifdef __mc68000__
cache_clear(virt_to_phys(rbd->skb->data),
pkt_len);
#endif
netif_rx(skb);
dev->stats.rx_packets++;
dev->stats.rx_bytes+=pkt_len;
}
}
else {
DEB(DEB_ERRORS, printk(KERN_DEBUG "%s: Error, rfd.stat = 0x%04x\n" ,
dev->name, rfd->stat));
dev->stats.rx_errors++;
if ((rfd->stat) & 0 x0001)
dev->stats.collisions++;
if ((rfd->stat) & 0 x0080)
dev->stats.rx_length_errors++;
if ((rfd->stat) & 0 x0100)
dev->stats.rx_over_errors++;
if ((rfd->stat) & 0 x0200)
dev->stats.rx_fifo_errors++;
if ((rfd->stat) & 0 x0400)
dev->stats.rx_frame_errors++;
if ((rfd->stat) & 0 x0800)
dev->stats.rx_crc_errors++;
if ((rfd->stat) & 0 x1000)
dev->stats.rx_length_errors++;
}
/* Clear the buffer descriptor count and EOF + F flags */
if (rbd != I596_NULL && (rbd->count & 0 x4000)) {
rbd->count = 0 ;
lp->rbd_head = rbd->v_next;
}
/* Tidy the frame descriptor, marking it as end of list */
rfd->rbd = I596_NULL;
rfd->stat = 0 ;
rfd->cmd = CMD_EOL|CMD_FLEX;
rfd->count = 0 ;
/* Remove end-of-list from old end descriptor */
rfd->v_prev->cmd = CMD_FLEX;
/* Update record of next frame descriptor to process */
lp->scb.rfd = rfd->b_next;
lp->rfd_head = rfd->v_next;
rfd = lp->rfd_head;
}
DEB(DEB_RXFRAME,printk(KERN_DEBUG "frames %d\n" , frames));
return 0 ;
}
static void i596_cleanup_cmd(struct net_device *dev, struct i596_private *lp)
{
struct i596_cmd *ptr;
while (lp->cmd_head != I596_NULL) {
ptr = lp->cmd_head;
lp->cmd_head = ptr->v_next;
lp->cmd_backlog--;
switch ((ptr->command) & 0 x7) {
case CmdTx:
{
struct tx_cmd *tx_cmd = (struct tx_cmd *) ptr;
struct sk_buff *skb = tx_cmd->skb;
dev_kfree_skb(skb);
dev->stats.tx_errors++;
dev->stats.tx_aborted_errors++;
ptr->v_next = ptr->b_next = I596_NULL;
tx_cmd->cmd.command = 0 ; /* Mark as free */
break ;
}
default :
ptr->v_next = ptr->b_next = I596_NULL;
}
}
wait_cmd(dev,lp,100 ,"i596_cleanup_cmd timed out" );
lp->scb.cmd = I596_NULL;
}
static void i596_reset(struct net_device *dev, struct i596_private *lp,
int ioaddr)
{
unsigned long flags;
DEB(DEB_RESET,printk(KERN_DEBUG "i596_reset\n" ));
spin_lock_irqsave (&lp->lock, flags);
wait_cmd(dev,lp,100 ,"i596_reset timed out" );
netif_stop_queue(dev);
lp->scb.command = CUC_ABORT | RX_ABORT;
CA(dev);
/* wait for shutdown */
wait_cmd(dev,lp,1000 ,"i596_reset 2 timed out" );
spin_unlock_irqrestore (&lp->lock, flags);
i596_cleanup_cmd(dev,lp);
i596_rx(dev);
netif_start_queue(dev);
init_i596_mem(dev);
}
static void i596_add_cmd(struct net_device *dev, struct i596_cmd *cmd)
{
struct i596_private *lp = dev->ml_priv;
int ioaddr = dev->base_addr;
unsigned long flags;
DEB(DEB_ADDCMD,printk(KERN_DEBUG "i596_add_cmd\n" ));
cmd->status = 0 ;
cmd->command |= (CMD_EOL | CMD_INTR);
cmd->v_next = cmd->b_next = I596_NULL;
spin_lock_irqsave (&lp->lock, flags);
if (lp->cmd_head != I596_NULL) {
lp->cmd_tail->v_next = cmd;
lp->cmd_tail->b_next = WSWAPcmd(virt_to_bus(&cmd->status));
} else {
lp->cmd_head = cmd;
wait_cmd(dev,lp,100 ,"i596_add_cmd timed out" );
lp->scb.cmd = WSWAPcmd(virt_to_bus(&cmd->status));
lp->scb.command = CUC_START;
CA(dev);
}
lp->cmd_tail = cmd;
lp->cmd_backlog++;
spin_unlock_irqrestore (&lp->lock, flags);
if (lp->cmd_backlog > max_cmd_backlog) {
unsigned long tickssofar = jiffies - lp->last_cmd;
if (tickssofar < ticks_limit)
return ;
printk(KERN_NOTICE "%s: command unit timed out, status resetting.\n" , dev->name);
i596_reset(dev, lp, ioaddr);
}
}
static int i596_open(struct net_device *dev)
{
int res = 0 ;
DEB(DEB_OPEN,printk(KERN_DEBUG "%s: i596_open() irq %d.\n" , dev->name, dev->irq));
if (request_irq(dev->irq, i596_interrupt, 0 , "i82596" , dev)) {
printk(KERN_ERR "%s: IRQ %d not free\n" , dev->name, dev->irq);
return -EAGAIN;
}
#ifdef ENABLE_MVME16x_NET
if (MACH_IS_MVME16x) {
if (request_irq(0 x56, i596_error, 0 , "i82596_error" , dev)) {
res = -EAGAIN;
goto err_irq_dev;
}
}
#endif
res = init_rx_bufs(dev);
if (res)
goto err_irq_56;
netif_start_queue(dev);
if (init_i596_mem(dev)) {
res = -EAGAIN;
goto err_queue;
}
return 0 ;
err_queue:
netif_stop_queue(dev);
remove_rx_bufs(dev);
err_irq_56:
#ifdef ENABLE_MVME16x_NET
free_irq(0 x56, dev);
err_irq_dev:
#endif
free_irq(dev->irq, dev);
return res;
}
static void i596_tx_timeout (struct net_device *dev, unsigned int txqueue)
{
struct i596_private *lp = dev->ml_priv;
int ioaddr = dev->base_addr;
/* Transmitter timeout, serious problems. */
DEB(DEB_ERRORS,printk(KERN_ERR "%s: transmit timed out, status resetting.\n" ,
dev->name));
dev->stats.tx_errors++;
/* Try to restart the adaptor */
if (lp->last_restart == dev->stats.tx_packets) {
DEB(DEB_ERRORS,printk(KERN_ERR "Resetting board.\n" ));
/* Shutdown and restart */
i596_reset (dev, lp, ioaddr);
} else {
/* Issue a channel attention signal */
DEB(DEB_ERRORS,printk(KERN_ERR "Kicking board.\n" ));
lp->scb.command = CUC_START | RX_START;
CA (dev);
lp->last_restart = dev->stats.tx_packets;
}
netif_trans_update(dev); /* prevent tx timeout */
netif_wake_queue (dev);
}
static netdev_tx_t i596_start_xmit(struct sk_buff *skb, struct net_device *dev)
{
struct i596_private *lp = dev->ml_priv;
struct tx_cmd *tx_cmd;
struct i596_tbd *tbd;
short length = skb->len;
DEB(DEB_STARTTX,printk(KERN_DEBUG "%s: i596_start_xmit(%x,%p) called\n" ,
dev->name, skb->len, skb->data));
if (skb->len < ETH_ZLEN) {
if (skb_padto(skb, ETH_ZLEN))
return NETDEV_TX_OK;
length = ETH_ZLEN;
}
netif_stop_queue(dev);
tx_cmd = lp->tx_cmds + lp->next_tx_cmd;
tbd = lp->tbds + lp->next_tx_cmd;
if (tx_cmd->cmd.command) {
printk(KERN_NOTICE "%s: xmit ring full, dropping packet.\n" ,
dev->name);
dev->stats.tx_dropped++;
dev_kfree_skb(skb);
} else {
if (++lp->next_tx_cmd == TX_RING_SIZE)
lp->next_tx_cmd = 0 ;
tx_cmd->tbd = WSWAPtbd(virt_to_bus(tbd));
tbd->next = I596_NULL;
tx_cmd->cmd.command = CMD_FLEX | CmdTx;
tx_cmd->skb = skb;
tx_cmd->pad = 0 ;
tx_cmd->size = 0 ;
tbd->pad = 0 ;
tbd->size = EOF | length;
tbd->data = WSWAPchar(virt_to_bus(skb->data));
#ifdef __mc68000__
cache_push(virt_to_phys(skb->data), length);
#endif
DEB(DEB_TXADDR,print_eth(skb->data, "tx-queued" ));
i596_add_cmd(dev, &tx_cmd->cmd);
dev->stats.tx_packets++;
dev->stats.tx_bytes += length;
}
netif_start_queue(dev);
return NETDEV_TX_OK;
}
static void print_eth(unsigned char *add, char *str)
{
printk(KERN_DEBUG "i596 0x%p, %pM --> %pM %02X%02X, %s\n" ,
add, add + 6 , add, add[12 ], add[13 ], str);
}
static const struct net_device_ops i596_netdev_ops = {
.ndo_open = i596_open,
.ndo_stop = i596_close,
.ndo_start_xmit = i596_start_xmit,
.ndo_set_rx_mode = set_multicast_list,
.ndo_tx_timeout = i596_tx_timeout,
.ndo_set_mac_address = eth_mac_addr,
.ndo_validate_addr = eth_validate_addr,
};
static struct net_device * __init i82596_probe(void )
{
struct net_device *dev;
int i;
struct i596_private *lp;
char eth_addr[8 ];
static int probed;
int err;
if (probed)
return ERR_PTR(-ENODEV);
probed++;
dev = alloc_etherdev(0 );
if (!dev)
return ERR_PTR(-ENOMEM);
#ifdef ENABLE_MVME16x_NET
if (MACH_IS_MVME16x) {
if (mvme16x_config & MVME16x_CONFIG_NO_ETHERNET) {
printk(KERN_NOTICE "Ethernet probe disabled - chip not present\n" );
err = -ENODEV;
goto out;
}
memcpy(eth_addr, absolute_pointer(0 xfffc1f2c), ETH_ALEN); /* YUCK! Get addr from NOVRAM */
dev->base_addr = MVME_I596_BASE;
dev->irq = (unsigned ) MVME16x_IRQ_I596;
goto found;
}
#endif
#ifdef ENABLE_BVME6000_NET
if (MACH_IS_BVME6000) {
volatile unsigned char *rtc = (unsigned char *) BVME_RTC_BASE;
unsigned char msr = rtc[3 ];
int i;
rtc[3 ] |= 0 x80;
for (i = 0 ; i < 6 ; i++)
eth_addr[i] = rtc[i * 4 + 7 ]; /* Stored in RTC RAM at offset 1 */
rtc[3 ] = msr;
dev->base_addr = BVME_I596_BASE;
dev->irq = (unsigned ) BVME_IRQ_I596;
goto found;
}
#endif
err = -ENODEV;
goto out;
found:
dev->mem_start = (int )__get_free_pages(GFP_ATOMIC, 0 );
if (!dev->mem_start) {
err = -ENOMEM;
goto out1;
}
DEB(DEB_PROBE,printk(KERN_INFO "%s: 82596 at %#3lx," , dev->name, dev->base_addr));
for (i = 0 ; i < 6 ; i++)
DEB(DEB_PROBE,printk(" %2.2X" , eth_addr[i]));
eth_hw_addr_set(dev, eth_addr);
DEB(DEB_PROBE,printk(" IRQ %d.\n" , dev->irq));
DEB(DEB_PROBE,printk(KERN_INFO "%s" , version));
/* The 82596-specific entries in the device structure. */
dev->netdev_ops = &i596_netdev_ops;
dev->watchdog_timeo = TX_TIMEOUT;
dev->ml_priv = (void *)(dev->mem_start);
lp = dev->ml_priv;
DEB(DEB_INIT,printk(KERN_DEBUG "%s: lp at 0x%08lx (%zd bytes), "
"lp->scb at 0x%08lx\n" ,
dev->name, (unsigned long )lp,
sizeof (struct i596_private), (unsigned long )&lp->scb));
memset((void *) lp, 0 , sizeof (struct i596_private));
#ifdef __mc68000__
cache_push(virt_to_phys((void *)(dev->mem_start)), 4096 );
cache_clear(virt_to_phys((void *)(dev->mem_start)), 4096 );
kernel_set_cachemode((void *)(dev->mem_start), 4096 , IOMAP_NOCACHE_SER);
#endif
lp->scb.command = 0 ;
lp->scb.cmd = I596_NULL;
lp->scb.rfd = I596_NULL;
spin_lock_init(&lp->lock);
err = register_netdev(dev);
if (err)
goto out2;
return dev;
out2:
#ifdef __mc68000__
/* XXX This assumes default cache mode to be IOMAP_FULL_CACHING,
* XXX which may be invalid ( CONFIG_060_WRITETHROUGH )
*/
kernel_set_cachemode((void *)(dev->mem_start), 4096 ,
IOMAP_FULL_CACHING);
#endif
free_page ((u32)(dev->mem_start));
out1:
out:
free_netdev(dev);
return ERR_PTR(err);
}
static irqreturn_t i596_interrupt(int irq, void *dev_id)
{
struct net_device *dev = dev_id;
struct i596_private *lp;
short ioaddr;
unsigned short status, ack_cmd = 0 ;
int handled = 0 ;
#ifdef ENABLE_BVME6000_NET
if (MACH_IS_BVME6000) {
if (*(char *) BVME_LOCAL_IRQ_STAT & BVME_ETHERR) {
i596_error(irq, dev_id);
return IRQ_HANDLED;
}
}
#endif
if (dev == NULL) {
printk(KERN_ERR "i596_interrupt(): irq %d for unknown device.\n" , irq);
return IRQ_NONE;
}
ioaddr = dev->base_addr;
lp = dev->ml_priv;
spin_lock (&lp->lock);
wait_cmd(dev,lp,100 ,"i596 interrupt, timeout" );
status = lp->scb.status;
DEB(DEB_INTS,printk(KERN_DEBUG "%s: i596 interrupt, IRQ %d, status %4.4x.\n" ,
dev->name, irq, status));
ack_cmd = status & 0 xf000;
if ((status & 0 x8000) || (status & 0 x2000)) {
struct i596_cmd *ptr;
handled = 1 ;
if ((status & 0 x8000))
DEB(DEB_INTS,printk(KERN_DEBUG "%s: i596 interrupt completed command.\n" , dev->name));
if ((status & 0 x2000))
DEB(DEB_INTS,printk(KERN_DEBUG "%s: i596 interrupt command unit inactive %x.\n" , dev->name, status & 0 x0700));
while ((lp->cmd_head != I596_NULL) && (lp->cmd_head->status & STAT_C)) {
ptr = lp->cmd_head;
DEB(DEB_STATUS,printk(KERN_DEBUG "cmd_head->status = %04x, ->command = %04x\n" ,
lp->cmd_head->status, lp->cmd_head->command));
lp->cmd_head = ptr->v_next;
lp->cmd_backlog--;
switch ((ptr->command) & 0 x7) {
case CmdTx:
{
struct tx_cmd *tx_cmd = (struct tx_cmd *) ptr;
struct sk_buff *skb = tx_cmd->skb;
if ((ptr->status) & STAT_OK) {
DEB(DEB_TXADDR,print_eth(skb->data, "tx-done" ));
} else {
dev->stats.tx_errors++;
if ((ptr->status) & 0 x0020)
dev->stats.collisions++;
if (!((ptr->status) & 0 x0040))
dev->stats.tx_heartbeat_errors++;
if ((ptr->status) & 0 x0400)
dev->stats.tx_carrier_errors++;
if ((ptr->status) & 0 x0800)
dev->stats.collisions++;
if ((ptr->status) & 0 x1000)
dev->stats.tx_aborted_errors++;
}
dev_consume_skb_irq(skb);
tx_cmd->cmd.command = 0 ; /* Mark free */
break ;
}
case CmdTDR:
{
unsigned short status = ((struct tdr_cmd *)ptr)->status;
if (status & 0 x8000) {
DEB(DEB_TDR,printk(KERN_INFO "%s: link ok.\n" , dev->name));
} else {
if (status & 0 x4000)
printk(KERN_ERR "%s: Transceiver problem.\n" , dev->name);
if (status & 0 x2000)
printk(KERN_ERR "%s: Termination problem.\n" , dev->name);
if (status & 0 x1000)
printk(KERN_ERR "%s: Short circuit.\n" , dev->name);
DEB(DEB_TDR,printk(KERN_INFO "%s: Time %d.\n" , dev->name, status & 0 x07ff));
}
break ;
}
case CmdConfigure:
case CmdMulticastList:
/* Zap command so set_multicast_list() knows it is free */
ptr->command = 0 ;
break ;
}
ptr->v_next = ptr->b_next = I596_NULL;
lp->last_cmd = jiffies;
}
ptr = lp->cmd_head;
while ((ptr != I596_NULL) && (ptr != lp->cmd_tail)) {
ptr->command &= 0 x1fff;
ptr = ptr->v_next;
}
if ((lp->cmd_head != I596_NULL))
ack_cmd |= CUC_START;
lp->scb.cmd = WSWAPcmd(virt_to_bus(&lp->cmd_head->status));
}
if ((status & 0 x1000) || (status & 0 x4000)) {
if ((status & 0 x4000))
DEB(DEB_INTS,printk(KERN_DEBUG "%s: i596 interrupt received a frame.\n" , dev->name));
i596_rx(dev);
/* Only RX_START if stopped - RGH 07-07-96 */
if (status & 0 x1000) {
if (netif_running(dev)) {
DEB(DEB_ERRORS,printk(KERN_ERR "%s: i596 interrupt receive unit inactive, status 0x%x\n" , dev->name, status));
ack_cmd |= RX_START;
dev->stats.rx_errors++;
dev->stats.rx_fifo_errors++;
rebuild_rx_bufs(dev);
}
}
}
wait_cmd(dev,lp,100 ,"i596 interrupt, timeout" );
lp->scb.command = ack_cmd;
#ifdef ENABLE_MVME16x_NET
if (MACH_IS_MVME16x) {
/* Ack the interrupt */
volatile unsigned char *pcc2 = (unsigned char *) 0 xfff42000;
pcc2[0 x2a] |= 0 x08;
}
#endif
#ifdef ENABLE_BVME6000_NET
if (MACH_IS_BVME6000) {
volatile unsigned char *ethirq = (unsigned char *) BVME_ETHIRQ_REG;
*ethirq = 1 ;
*ethirq = 3 ;
}
#endif
CA(dev);
DEB(DEB_INTS,printk(KERN_DEBUG "%s: exiting interrupt.\n" , dev->name));
spin_unlock (&lp->lock);
return IRQ_RETVAL(handled);
}
static int i596_close(struct net_device *dev)
{
struct i596_private *lp = dev->ml_priv;
unsigned long flags;
netif_stop_queue(dev);
DEB(DEB_INIT,printk(KERN_DEBUG "%s: Shutting down ethercard, status was %4.4x.\n" ,
dev->name, lp->scb.status));
spin_lock_irqsave(&lp->lock, flags);
wait_cmd(dev,lp,100 ,"close1 timed out" );
lp->scb.command = CUC_ABORT | RX_ABORT;
CA(dev);
wait_cmd(dev,lp,100 ,"close2 timed out" );
spin_unlock_irqrestore(&lp->lock, flags);
DEB(DEB_STRUCT,i596_display_data(dev));
i596_cleanup_cmd(dev,lp);
#ifdef ENABLE_MVME16x_NET
if (MACH_IS_MVME16x) {
volatile unsigned char *pcc2 = (unsigned char *) 0 xfff42000;
/* Disable all ints */
pcc2[0 x28] = 1 ;
pcc2[0 x2a] = 0 x40;
pcc2[0 x2b] = 0 x40; /* Set snooping bits now! */
}
#endif
#ifdef ENABLE_BVME6000_NET
if (MACH_IS_BVME6000) {
volatile unsigned char *ethirq = (unsigned char *) BVME_ETHIRQ_REG;
*ethirq = 1 ;
}
#endif
#ifdef ENABLE_MVME16x_NET
free_irq(0 x56, dev);
#endif
free_irq(dev->irq, dev);
remove_rx_bufs(dev);
return 0 ;
}
/*
* Set or clear the multicast filter for this adaptor .
*/
static void set_multicast_list(struct net_device *dev)
{
struct i596_private *lp = dev->ml_priv;
int config = 0 , cnt;
DEB(DEB_MULTI,printk(KERN_DEBUG "%s: set multicast list, %d entries, promisc %s, allmulti %s\n" ,
dev->name, netdev_mc_count(dev),
dev->flags & IFF_PROMISC ? "ON" : "OFF" ,
dev->flags & IFF_ALLMULTI ? "ON" : "OFF" ));
if (wait_cfg(dev, &lp->cf_cmd.cmd, 1000 , "config change request timed out" ))
return ;
if ((dev->flags & IFF_PROMISC) && !(lp->cf_cmd.i596_config[8 ] & 0 x01)) {
lp->cf_cmd.i596_config[8 ] |= 0 x01;
config = 1 ;
}
if (!(dev->flags & IFF_PROMISC) && (lp->cf_cmd.i596_config[8 ] & 0 x01)) {
lp->cf_cmd.i596_config[8 ] &= ~0 x01;
config = 1 ;
}
if ((dev->flags & IFF_ALLMULTI) && (lp->cf_cmd.i596_config[11 ] & 0 x20)) {
lp->cf_cmd.i596_config[11 ] &= ~0 x20;
config = 1 ;
}
if (!(dev->flags & IFF_ALLMULTI) && !(lp->cf_cmd.i596_config[11 ] & 0 x20)) {
lp->cf_cmd.i596_config[11 ] |= 0 x20;
config = 1 ;
}
if (config) {
lp->cf_cmd.cmd.command = CmdConfigure;
i596_add_cmd(dev, &lp->cf_cmd.cmd);
}
cnt = netdev_mc_count(dev);
if (cnt > MAX_MC_CNT)
{
cnt = MAX_MC_CNT;
printk(KERN_ERR "%s: Only %d multicast addresses supported" ,
dev->name, cnt);
}
if (!netdev_mc_empty(dev)) {
struct netdev_hw_addr *ha;
unsigned char *cp;
struct mc_cmd *cmd;
if (wait_cfg(dev, &lp->mc_cmd.cmd, 1000 , "multicast list change request timed out" ))
return ;
cmd = &lp->mc_cmd;
cmd->cmd.command = CmdMulticastList;
cmd->mc_cnt = cnt * ETH_ALEN;
cp = cmd->mc_addrs;
netdev_for_each_mc_addr(ha, dev) {
if (!cnt--)
break ;
memcpy(cp, ha->addr, ETH_ALEN);
if (i596_debug > 1 )
DEB(DEB_MULTI,printk(KERN_INFO "%s: Adding address %pM\n" ,
dev->name, cp));
cp += ETH_ALEN;
}
i596_add_cmd(dev, &cmd->cmd);
}
}
static struct net_device *dev_82596;
static int debug = -1 ;
module_param(debug, int , 0 );
MODULE_PARM_DESC(debug, "i82596 debug mask" );
static int __init i82596_init(void )
{
if (debug >= 0 )
i596_debug = debug;
dev_82596 = i82596_probe();
return PTR_ERR_OR_ZERO(dev_82596);
}
module_init(i82596_init);
static void __exit i82596_cleanup(void )
{
unregister_netdev(dev_82596);
#ifdef __mc68000__
/* XXX This assumes default cache mode to be IOMAP_FULL_CACHING,
* XXX which may be invalid ( CONFIG_060_WRITETHROUGH )
*/
kernel_set_cachemode((void *)(dev_82596->mem_start), 4096 ,
IOMAP_FULL_CACHING);
#endif
free_page ((u32)(dev_82596->mem_start));
free_netdev(dev_82596);
}
module_exit(i82596_cleanup);
Messung V0.5 in Prozent C=95 H=90 G=92
¤ Dauer der Verarbeitung: 0.25 Sekunden
(vorverarbeitet am 2026-10-01)
¤
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