/*
* Linux ethernet device driver for the 3Com Etherlink Plus (3C505)
* By Craig Southeren, Juha Laiho and Philip Blundell
*
* 3c505.c This module implements an interface to the 3Com
* Etherlink Plus (3c505) ethernet card. Linux device
* driver interface reverse engineered from the Linux 3C509
* device drivers. Some 3C505 information gleaned from
* the Crynwr packet driver. Still this driver would not
* be here without 3C505 technical reference provided by
* 3Com.
*
* $Id: 3c505.c,v 1.10 1996/04/16 13:06:27 phil Exp $
*
* Authors: Linux 3c505 device driver by
* Craig Southeren, <craigs@ineluki.apana.org.au>
* Final debugging by
* Andrew Tridgell, <tridge@nimbus.anu.edu.au>
* Auto irq/address, tuning, cleanup and v1.1.4+ kernel mods by
* Juha Laiho, <jlaiho@ichaos.nullnet.fi>
* Linux 3C509 driver by
* Donald Becker, <becker@super.org>
* Crynwr packet driver by
* Krishnan Gopalan and Gregg Stefancik,
* Clemson University Engineering Computer Operations.
* Portions of the code have been adapted from the 3c505
* driver for NCSA Telnet by Bruce Orchard and later
* modified by Warren Van Houten and krus@diku.dk.
* 3C505 technical information provided by
* Terry Murphy, of 3Com Network Adapter Division
* Linux 1.3.0 changes by
* Alan Cox <Alan.Cox@linux.org>
* More debugging and DMA version by Philip Blundell
*/
/* Theory of operation:
* The 3c505 is quite an intelligent board. All communication with it is done
* by means of Primary Command Blocks (PCBs); these are transferred using PIO
* through the command register. The card has 256k of on-board RAM, which is
* used to buffer received packets. It might seem at first that more buffers
* are better, but in fact this isn't true. From my tests, it seems that
* more than about 10 buffers are unnecessary, and there is a noticeable
* performance hit in having more active on the card. So the majority of the
* card's memory isn't, in fact, used.
*
* We keep up to 4 "receive packet" commands active on the board at a time.
* When a packet comes in, so long as there is a receive command active, the
* board will send us a "packet received" PCB and then add the data for that
* packet to the DMA queue. If a DMA transfer is not already in progress, we
* set one up to start uploading the data. We have to maintain a list of
* backlogged receive packets, because the card may decide to tell us about
* a newly-arrived packet at any time, and we may not be able to start a DMA
* transfer immediately (ie one may already be going on). We can't NAK the
* PCB, because then it would throw the packet away.
*
* Trying to send a PCB to the card at the wrong moment seems to have bad
* effects. If we send it a transmit PCB while a receive DMA is happening,
* it will just NAK the PCB and so we will have wasted our time. Worse, it
* sometimes seems to interrupt the transfer. The majority of the low-level
* code is protected by one huge semaphore -- "busy" -- which is set whenever
* it probably isn't safe to do anything to the card. The receive routine
* must gain a lock on "busy" before it can start a DMA transfer, and the
* transmit routine must gain a lock before it sends the first PCB to the card.
* The send_pcb() routine also has an internal semaphore to protect it against
* being re-entered (which would be disastrous) -- this is needed because
* several things can happen asynchronously (re-priming the receiver and
* asking the card for statistics, for example). send_pcb() will also refuse
* to talk to the card at all if a DMA upload is happening. The higher-level
* networking code will reschedule a later retry if some part of the driver
* is blocked. In practice, this doesn't seem to happen very often.
*/
/* This driver will not work with revision 2 hardware, because the host
* control register is write-only. It should be fairly easy to arrange to
* keep our own soft-copy of the intended contents of this register, if
* somebody has the time. There may be firmware differences that cause
* other problems, though, and I don't have an old card to test.
*/
/* The driver is a mess. I took Craig's and Juha's code, and hacked it firstly
* to make it more reliable, and secondly to add DMA mode. Many things could
* probably be done better; the concurrency protection is particularly awful.
*/
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/string.h>
#include <linux/interrupt.h>
#include <linux/ptrace.h>
#include <linux/errno.h>
#include <linux/in.h>
#include <linux/malloc.h>
#include <linux/ioport.h>
#include <asm/bitops.h>
#include <asm/io.h>
#include <asm/dma.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/skbuff.h>
#include "3c505.h"
#define ELP_DMA 6 /* DMA channel to use */
#define ELP_RX_PCBS 4
/*********************************************************
*
* define debug messages here as common strings to reduce space
*
*********************************************************/
static const char *filename = __FILE__;
static const char *timeout_msg = "*** timeout at %s:%s (line %d) ***\n";
#define TIMEOUT_MSG(lineno) \
printk(timeout_msg, filename,__FUNCTION__,(lineno))
static const char *invalid_pcb_msg =
"*** invalid pcb length %d at %s:%s (line %d) ***\n";
#define INVALID_PCB_MSG(len) \
printk(invalid_pcb_msg, (len),filename,__FUNCTION__,__LINE__)
static const char *search_msg = "%s: Looking for 3c505 adapter at address %#x...";
static const char *stilllooking_msg = "still looking...";
static const char *found_msg = "found.\n";
static const char *notfound_msg = "not found (reason = %d)\n";
static const char *couldnot_msg = "%s: 3c505 not found\n";
/*********************************************************
*
* various other debug stuff
*
*********************************************************/
#ifdef ELP_DEBUG
static const int elp_debug = ELP_DEBUG;
#else
static const int elp_debug = 0;
#endif
/*
* 0 = no messages (well, some)
* 1 = messages when high level commands performed
* 2 = messages when low level commands performed
* 3 = messages when interrupts received
*/
/*****************************************************************
*
* useful macros
*
*****************************************************************/
#ifndef TRUE
#define TRUE 1
#endif
#ifndef FALSE
#define FALSE 0
#endif
/*****************************************************************
*
* List of I/O-addresses we try to auto-sense
* Last element MUST BE 0!
*****************************************************************/
const int addr_list[] = {0x300, 0x280, 0x310, 0};
/* Dma Memory related stuff */
/* Pure 2^n version of get_order */
static inline int __get_order(unsigned long size)
{
int order;
size = (size - 1) >> (PAGE_SHIFT - 1);
order = -1;
do {
size >>= 1;
order++;
} while (size);
return order;
}
static unsigned long dma_mem_alloc(int size)
{
int order = __get_order(size);
return __get_dma_pages(GFP_KERNEL, order);
}
/*****************************************************************
*
* Functions for I/O (note the inline !)
*
*****************************************************************/
static inline unsigned char inb_status(unsigned int base_addr)
{
return inb(base_addr + PORT_STATUS);
}
static inline unsigned char inb_control(unsigned int base_addr)
{
return inb(base_addr + PORT_CONTROL);
}
static inline int inb_command(unsigned int base_addr)
{
return inb(base_addr + PORT_COMMAND);
}
static inline void outb_control(unsigned char val, unsigned int base_addr)
{
outb(val, base_addr + PORT_CONTROL);
}
static inline void outb_command(unsigned char val, unsigned int base_addr)
{
outb(val, base_addr + PORT_COMMAND);
}
static inline unsigned int inw_data(unsigned int base_addr)
{
return inw(base_addr + PORT_DATA);
}
static inline void outw_data(unsigned int val, unsigned int base_addr)
{
outw(val, base_addr + PORT_DATA);
}
/*****************************************************************
*
* structure to hold context information for adapter
*
*****************************************************************/
#define DMA_BUFFER_SIZE 1600
#define BACKLOG_SIZE 4
typedef struct {
volatile short got[NUM_TRANSMIT_CMDS]; /* flags for command completion */
pcb_struct tx_pcb; /* PCB for foreground sending */
pcb_struct rx_pcb; /* PCB for foreground receiving */
pcb_struct itx_pcb; /* PCB for background sending */
pcb_struct irx_pcb; /* PCB for background receiving */
struct enet_statistics stats;
void *dma_buffer;
struct {
unsigned int length[BACKLOG_SIZE];
unsigned int in;
unsigned int out;
} rx_backlog;
struct {
unsigned int direction;
unsigned int length;
unsigned int copy_flag;
struct sk_buff *skb;
long int start_time;
} current_dma;
/* flags */
unsigned long send_pcb_semaphore;
unsigned int dmaing;
unsigned long busy;
unsigned int rx_active; /* number of receive PCBs */
} elp_device;
static inline unsigned int backlog_next(unsigned int n)
{
return (n + 1) % BACKLOG_SIZE;
}
/*****************************************************************
*
* useful functions for accessing the adapter
*
*****************************************************************/
/*
* use this routine when accessing the ASF bits as they are
* changed asynchronously by the adapter
*/
/* get adapter PCB status */
#define GET_ASF(addr) \
(get_status(addr)&ASF_PCB_MASK)
static inline int get_status(unsigned int base_addr)
{
int timeout = jiffies + 10;
register int stat1;
do {
stat1 = inb_status(base_addr);
} while (stat1 != inb_status(base_addr) && jiffies < timeout);
if (jiffies >= timeout)
TIMEOUT_MSG(__LINE__);
return stat1;
}
static inline void set_hsf(unsigned int base_addr, int hsf)
{
cli();
outb_control((inb_control(base_addr) & ~HSF_PCB_MASK) | hsf, base_addr);
sti();
}
static int start_receive(struct device *, pcb_struct *);
inline static void adapter_reset(struct device *dev)
{
int timeout;
unsigned char orig_hcr = inb_control(dev->base_addr);
elp_device *adapter = dev->priv;
outb_control(0, dev->base_addr);
if (inb_status(dev->base_addr) & ACRF) {
do {
inb_command(dev->base_addr);
timeout = jiffies + 2;
while ((jiffies <= timeout) && !(inb_status(dev->base_addr) & ACRF));
} while (inb_status(dev->base_addr) & ACRF);
set_hsf(dev->base_addr, HSF_PCB_NAK);
}
outb_control(inb_control(dev->base_addr) | ATTN | DIR, dev->base_addr);
timeout = jiffies + 1;
while (jiffies <= timeout);
outb_control(inb_control(dev->base_addr) & ~ATTN, dev->base_addr);
timeout = jiffies + 1;
while (jiffies <= timeout);
outb_control(inb_control(dev->base_addr) | FLSH, dev->base_addr);
timeout = jiffies + 1;
while (jiffies <= timeout);
outb_control(inb_control(dev->base_addr) & ~FLSH, dev->base_addr);
timeout = jiffies + 1;
while (jiffies <= timeout);
outb_control(orig_hcr, dev->base_addr);
if (!start_receive(dev, &adapter->tx_pcb))
printk("%s: start receive command failed \n", dev->name);
}
/* Check to make sure that a DMA transfer hasn't timed out. This should never happen
* in theory, but seems to occur occasionally if the card gets prodded at the wrong
* time.
*/
static inline void check_dma(struct device *dev)
{
elp_device *adapter = dev->priv;
if (adapter->dmaing && (jiffies > (adapter->current_dma.start_time + 10))) {
unsigned long flags;
printk("%s: DMA %s timed out, %d bytes left\n", dev->name, adapter->current_dma.direction ? "download" : "upload", get_dma_residue(dev->dma));
save_flags(flags);
cli();
adapter->dmaing = 0;
adapter->busy = 0;
disable_dma(dev->dma);
if (adapter->rx_active)
adapter->rx_active--;
outb_control(inb_control(dev->base_addr) & ~(DMAE | TCEN | DIR), dev->base_addr);
restore_flags(flags);
}
}
/* Primitive functions used by send_pcb() */
static inline unsigned int send_pcb_slow(unsigned int base_addr, unsigned char byte)
{
unsigned int timeout;
outb_command(byte, base_addr);
for (timeout = jiffies + 5; jiffies < timeout;) {
if (inb_status(base_addr) & HCRE)
return FALSE;
}
printk("3c505: send_pcb_slow timed out\n");
return TRUE;
}
static inline unsigned int send_pcb_fast(unsigned int base_addr, unsigned char byte)
{
unsigned int timeout;
outb_command(byte, base_addr);
for (timeout = 0; timeout < 40000; timeout++) {
if (inb_status(base_addr) & HCRE)
return FALSE;
}
printk("3c505: send_pcb_fast timed out\n");
return TRUE;
}
/* Check to see if the receiver needs restarting, and kick it if so */
static inline void prime_rx(struct device *dev)
{
elp_device *adapter = dev->priv;
while (adapter->rx_active < ELP_RX_PCBS && dev->start) {
if (!start_receive(dev, &adapter->itx_pcb))
break;
}
}
/*****************************************************************
*
* send_pcb
* Send a PCB to the adapter.
*
* output byte to command reg --<--+
* wait until HCRE is non zero |
* loop until all bytes sent -->--+
* set HSF1 and HSF2 to 1
* output pcb length
* wait until ASF give ACK or NAK
* set HSF1 and HSF2 to 0
*
*****************************************************************/
/* This can be quite slow -- the adapter is allowed to take up to 40ms
* to respond to the initial interrupt.
*
* We run initially with interrupts turned on, but with a semaphore set
* so that nobody tries to re-enter this code. Once the first byte has
* gone through, we turn interrupts off and then send the others (the
* timeout is reduced to 500us).
*/
static int send_pcb(struct device *dev, pcb_struct * pcb)
{
int i;
int timeout;
elp_device *adapter = dev->priv;
check_dma(dev);
if (adapter->dmaing && adapter->current_dma.direction == 0)
return FALSE;
/* Avoid contention */
if (set_bit(1, &adapter->send_pcb_semaphore)) {
if (elp_debug >= 3) {
printk("%s: send_pcb entered while threaded\n", dev->name);
}
return FALSE;
}
/*
* load each byte into the command register and
* wait for the HCRE bit to indicate the adapter
* had read the byte
*/
set_hsf(dev->base_addr, 0);
if (send_pcb_slow(dev->base_addr, pcb->command))
goto abort;
cli();
if (send_pcb_fast(dev->base_addr, pcb->length))
goto sti_abort;
for (i = 0; i < pcb->length; i++) {
if (send_pcb_fast(dev->base_addr, pcb->data.raw[i]))
goto sti_abort;
}
outb_control(inb_control(dev->base_addr) | 3, dev->base_addr); /* signal end of PCB */
outb_command(2 + pcb->length, dev->base_addr);
/* now wait for the acknowledgement */
sti();
for (timeout = jiffies + 5; jiffies < timeout;) {
switch (GET_ASF(dev->base_addr)) {
case ASF_PCB_ACK:
adapter->send_pcb_semaphore = 0;
return TRUE;
break;
case ASF_PCB_NAK:
printk("%s: send_pcb got NAK\n", dev->name);
goto abort;
break;
}
}
if (elp_debug >= 1)
printk("%s: timeout waiting for PCB acknowledge (status %02x)\n", dev->name, inb_status(dev->base_addr));
sti_abort:
sti();
abort:
adapter->send_pcb_semaphore = 0;
return FALSE;
}
/*****************************************************************
*
* receive_pcb
* Read a PCB from the adapter
*
* wait for ACRF to be non-zero ---<---+
* input a byte |
* if ASF1 and ASF2 were not both one |
* before byte was read, loop --->---+
* set HSF1 and HSF2 for ack
*
*****************************************************************/
static int receive_pcb(struct device *dev, pcb_struct * pcb)
{
int i, j;
int total_length;
int stat;
int timeout;
elp_device *adapter = dev->priv;
set_hsf(dev->base_addr, 0);
/* get the command code */
timeout = jiffies + 2;
while (((stat = get_status(dev->base_addr)) & ACRF) == 0 && jiffies < timeout);
if (jiffies >= timeout) {
TIMEOUT_MSG(__LINE__);
return FALSE;
}
pcb->command = inb_command(dev->base_addr);
/* read the data length */
timeout = jiffies + 3;
while (((stat = get_status(dev->base_addr)) & ACRF) == 0 && jiffies < timeout);
if (jiffies >= timeout) {
TIMEOUT_MSG(__LINE__);
printk("%s: status %02x\n", dev->name, stat);
return FALSE;
}
pcb->length = inb_command(dev->base_addr);
if (pcb->length > MAX_PCB_DATA) {
INVALID_PCB_MSG(pcb->length);
adapter_reset(dev);
return FALSE;
}
/* read the data */
cli();
i = 0;
do {
j = 0;
while (((stat = get_status(dev->base_addr)) & ACRF) == 0 && j++ < 20000);
pcb->data.raw[i++] = inb_command(dev->base_addr);
if (i > MAX_PCB_DATA)
INVALID_PCB_MSG(i);
} while ((stat & ASF_PCB_MASK) != ASF_PCB_END && j < 20000);
sti();
if (j >= 20000) {
TIMEOUT_MSG(__LINE__);
return FALSE;
}
/* woops, the last "data" byte was really the length! */
total_length = pcb->data.raw[--i];
/* safety check total length vs data length */
if (total_length != (pcb->length + 2)) {
if (elp_debug >= 2)
printk("%s: mangled PCB received\n", dev->name);
set_hsf(dev->base_addr, HSF_PCB_NAK);
return FALSE;
}
if (pcb->command == CMD_RECEIVE_PACKET_COMPLETE) {
if (set_bit(0, (void *) &adapter->busy)) {
if (backlog_next(adapter->rx_backlog.in) == adapter->rx_backlog.out) {
set_hsf(dev->base_addr, HSF_PCB_NAK);
printk("%s: PCB rejected, transfer in progress and backlog full\n", dev->name);
pcb->command = 0;
return TRUE;
} else {
pcb->command = 0xff;
}
}
}
set_hsf(dev->base_addr, HSF_PCB_ACK);
return TRUE;
}
/******************************************************
*
* queue a receive command on the adapter so we will get an
* interrupt when a packet is received.
*
******************************************************/
static int start_receive(struct device *dev, pcb_struct * tx_pcb)
{
int status;
elp_device *adapter = dev->priv;
if (elp_debug >= 3)
printk("%s: restarting receiver\n", dev->name);
tx_pcb->command = CMD_RECEIVE_PACKET;
tx_pcb->length = sizeof(struct Rcv_pkt);
tx_pcb->data.rcv_pkt.buf_seg
= tx_pcb->data.rcv_pkt.buf_ofs = 0; /* Unused */
tx_pcb->data.rcv_pkt.buf_len = 1600;
tx_pcb->data.rcv_pkt.timeout = 0; /* set timeout to zero */
status = send_pcb(dev, tx_pcb);
if (status)
adapter->rx_active++;
return status;
}
/******************************************************
*
* extract a packet from the adapter
* this routine is only called from within the interrupt
* service routine, so no cli/sti calls are needed
* note that the length is always assumed to be even
*
******************************************************/
static void receive_packet(struct device *dev, int len)
{
int rlen;
elp_device *adapter = dev->priv;
unsigned long target;
struct sk_buff *skb;
rlen = (len + 1) & ~1;
skb = dev_alloc_skb(rlen + 2);
adapter->current_dma.copy_flag = 0;
if (!skb) {
printk("%s: memory squeeze, dropping packet\n", dev->name);
target = virt_to_bus(adapter->dma_buffer);
} else {
skb_reserve(skb, 2);
target = virt_to_bus(skb_put(skb, rlen));
if ((target + rlen) >= MAX_DMA_ADDRESS) {
target = virt_to_bus(adapter->dma_buffer);
adapter->current_dma.copy_flag = 1;
}
}
/* if this happens, we die */
if (set_bit(0, (void *) &adapter->dmaing))
printk("%s: rx blocked, DMA in progress, dir %d\n", dev->name, adapter->current_dma.direction);
adapter->current_dma.direction = 0;
adapter->current_dma.length = rlen;
adapter->current_dma.skb = skb;
adapter->current_dma.start_time = jiffies;
outb_control(inb_control(dev->base_addr) | DIR | TCEN | DMAE, dev->base_addr);
disable_dma(dev->dma);
clear_dma_ff(dev->dma);
set_dma_mode(dev->dma, 0x04); /* dma read */
set_dma_addr(dev->dma, target);
set_dma_count(dev->dma, rlen);
enable_dma(dev->dma);
if (elp_debug >= 3) {
printk("%s: rx DMA transfer started\n", dev->name);
}
if (adapter->rx_active)
adapter->rx_active--;
if (!adapter->busy)
printk("%s: receive_packet called, busy not set.\n", dev->name);
}
/******************************************************
*
* interrupt handler
*
******************************************************/
static void elp_interrupt(int irq, void *dev_id, struct pt_regs *reg_ptr)
{
int len;
int dlen;
int icount = 0;
struct device *dev;
elp_device *adapter;
int timeout;
if (irq < 0 || irq > 15) {
printk("elp_interrupt(): illegal IRQ number found in interrupt routine (%i)\n", irq);
return;
}
dev = irq2dev_map[irq];
if (dev == NULL) {
printk("elp_interrupt(): irq %d for unknown device.\n", irq);
return;
}
adapter = (elp_device *) dev->priv;
if (dev->interrupt) {
printk("%s: re-entering the interrupt handler!\n", dev->name);
return;
}
dev->interrupt = 1;
do {
/*
* has a DMA transfer finished?
*/
if (inb_status(dev->base_addr) & DONE) {
if (!adapter->dmaing) {
printk("%s: phantom DMA completed\n", dev->name);
}
if (elp_debug >= 3) {
printk("%s: %s DMA complete, status %02x\n", dev->name, adapter->current_dma.direction ? "tx" : "rx", inb_status(dev->base_addr));
}
outb_control(inb_control(dev->base_addr) & ~(DMAE | TCEN | DIR), dev->base_addr);
if (adapter->current_dma.direction) {
dev_kfree_skb(adapter->current_dma.skb, FREE_WRITE);
} else {
struct sk_buff *skb = adapter->current_dma.skb;
if (skb) {
skb->dev = dev;
if (adapter->current_dma.copy_flag) {
memcpy(skb_put(skb, adapter->current_dma.length), adapter->dma_buffer, adapter->current_dma.length);
}
skb->protocol = eth_type_trans(skb,dev);
netif_rx(skb);
}
}
adapter->dmaing = 0;
if (adapter->rx_backlog.in != adapter->rx_backlog.out) {
int t = adapter->rx_backlog.length[adapter->rx_backlog.out];
adapter->rx_backlog.out = backlog_next(adapter->rx_backlog.out);
if (elp_debug >= 2)
printk("%s: receiving backlogged packet (%d)\n", dev->name, t);
receive_packet(dev, t);
} else {
adapter->busy = 0;
}
} else {
/* has one timed out? */
check_dma(dev);
}
sti();
/*
* receive a PCB from the adapter
*/
timeout = jiffies + 3;
while ((inb_status(dev->base_addr) & ACRF) != 0 && jiffies < timeout) {
if (receive_pcb(dev, &adapter->irx_pcb)) {
switch (adapter->irx_pcb.command) {
case 0:
break;
/*
* received a packet - this must be handled fast
*/
case 0xff:
case CMD_RECEIVE_PACKET_COMPLETE:
/* if the device isn't open, don't pass packets up the stack */
if (dev->start == 0)
break;
cli();
len = adapter->irx_pcb.data.rcv_resp.pkt_len;
dlen = adapter->irx_pcb.data.rcv_resp.buf_len;
if (adapter->irx_pcb.data.rcv_resp.timeout != 0) {
printk("%s: interrupt - packet not received correctly\n", dev->name);
sti();
} else {
if (elp_debug >= 3) {
sti();
printk("%s: interrupt - packet received of length %i (%i)\n", dev->name, len, dlen);
cli();
}
if (adapter->irx_pcb.command == 0xff) {
if (elp_debug >= 2)
printk("%s: adding packet to backlog (len = %d)\n", dev->name, dlen);
adapter->rx_backlog.length[adapter->rx_backlog.in] = dlen;
adapter->rx_backlog.in = backlog_next(adapter->rx_backlog.in);
} else {
receive_packet(dev, dlen);
}
sti();
if (elp_debug >= 3)
printk("%s: packet received\n", dev->name);
}
break;
/*
* 82586 configured correctly
*/
case CMD_CONFIGURE_82586_RESPONSE:
adapter->got[CMD_CONFIGURE_82586] = 1;
if (elp_debug >= 3)
printk("%s: interrupt - configure response received\n", dev->name);
break;
/*
* Adapter memory configuration
*/
case CMD_CONFIGURE_ADAPTER_RESPONSE:
adapter->got[CMD_CONFIGURE_ADAPTER_MEMORY] = 1;
if (elp_debug >= 3)
printk("%s: Adapter memory configuration %s.\n", dev->name,
adapter->irx_pcb.data.failed ? "failed" : "succeeded");
break;
/*
* Multicast list loading
*/
case CMD_LOAD_MULTICAST_RESPONSE:
adapter->got[CMD_LOAD_MULTICAST_LIST] = 1;
if (elp_debug >= 3)
printk("%s: Multicast address list loading %s.\n", dev->name,
adapter->irx_pcb.data.failed ? "failed" : "succeeded");
break;
/*
* Station address setting
*/
case CMD_SET_ADDRESS_RESPONSE:
adapter->got[CMD_SET_STATION_ADDRESS] = 1;
if (elp_debug >= 3)
printk("%s: Ethernet address setting %s.\n", dev->name,
adapter->irx_pcb.data.failed ? "failed" : "succeeded");
break;
/*
* received board statistics
*/
case CMD_NETWORK_STATISTICS_RESPONSE:
adapter->stats.rx_packets += adapter->irx_pcb.data.netstat.tot_recv;
adapter->stats.tx_packets += adapter->irx_pcb.data.netstat.tot_xmit;
adapter->stats.rx_crc_errors += adapter->irx_pcb.data.netstat.err_CRC;
adapter->stats.rx_frame_errors += adapter->irx_pcb.data.netstat.err_align;
adapter->stats.rx_fifo_errors += adapter->irx_pcb.data.netstat.err_ovrrun;
adapter->stats.rx_over_errors += adapter->irx_pcb.data.netstat.err_res;
adapter->got[CMD_NETWORK_STATISTICS] = 1;
if (elp_debug >= 3)
printk("%s: interrupt - statistics response received\n", dev->name);
break;
/*
* sent a packet
*/
case CMD_TRANSMIT_PACKET_COMPLETE:
if (elp_debug >= 3)
printk("%s: interrupt - packet sent\n", dev->name);
if (dev->start == 0)
break;
switch (adapter->irx_pcb.data.xmit_resp.c_stat) {
case 0xffff:
adapter->stats.tx_aborted_errors++;
printk(KERN_INFO "%s: transmit timed out, network cable problem?\n", dev->name);
break;
case 0xfffe:
adapter->stats.tx_fifo_errors++;
printk(KERN_INFO "%s: transmit timed out, FIFO underrun\n", dev->name);
break;
}
dev->tbusy = 0;
mark_bh(NET_BH);
break;
/*
* some unknown PCB
*/
default:
printk(KERN_DEBUG "%s: unknown PCB received - %2.2x\n", dev->name, adapter->irx_pcb.command);
break;
}
} else {
printk("%s: failed to read PCB on interrupt\n", dev->name);
adapter_reset(dev);
}
}
} while (icount++ < 5 && (inb_status(dev->base_addr) & (ACRF | DONE)));
prime_rx(dev);
/*
* indicate no longer in interrupt routine
*/
dev->interrupt = 0;
}
/******************************************************
*
* open the board
*
******************************************************/
static int elp_open(struct device *dev)
{
elp_device *adapter;
adapter = dev->priv;
if (elp_debug >= 3)
printk("%s: request to open device\n", dev->name);
/*
* make sure we actually found the device
*/
if (adapter == NULL) {
printk("%s: Opening a non-existent physical device\n", dev->name);
return -EAGAIN;
}
/*
* disable interrupts on the board
*/
outb_control(0x00, dev->base_addr);
/*
* clear any pending interrupts
*/
inb_command(dev->base_addr);
adapter_reset(dev);
/*
* interrupt routine not entered
*/
dev->interrupt = 0;
/*
* transmitter not busy
*/
dev->tbusy = 0;
/*
* no receive PCBs active
*/
adapter->rx_active = 0;
adapter->busy = 0;
adapter->send_pcb_semaphore = 0;
adapter->rx_backlog.in = 0;
adapter->rx_backlog.out = 0;
/*
* make sure we can find the device header given the interrupt number
*/
irq2dev_map[dev->irq] = dev;
/*
* install our interrupt service routine
*/
if (request_irq(dev->irq, &elp_interrupt, 0, "3c505", NULL)) {
irq2dev_map[dev->irq] = NULL;
return -EAGAIN;
}
if (request_dma(dev->dma, "3c505")) {
printk("%s: could not allocate DMA channel\n", dev->name);
return -EAGAIN;
}
adapter->dma_buffer = (void *) dma_mem_alloc(DMA_BUFFER_SIZE);
if (!adapter->dma_buffer) {
printk("Could not allocate DMA buffer\n");
}
adapter->dmaing = 0;
/*
* enable interrupts on the board
*/
outb_control(CMDE, dev->base_addr);
/*
* device is now officially open!
*/
dev->start = 1;
/*
* configure adapter memory: we need 10 multicast addresses, default==0
*/
if (elp_debug >= 3)
printk("%s: sending 3c505 memory configuration command\n", dev->name);
adapter->tx_pcb.command = CMD_CONFIGURE_ADAPTER_MEMORY;
adapter->tx_pcb.data.memconf.cmd_q = 10;
adapter->tx_pcb.data.memconf.rcv_q = 20;
adapter->tx_pcb.data.memconf.mcast = 10;
adapter->tx_pcb.data.memconf.frame = 20;
adapter->tx_pcb.data.memconf.rcv_b = 20;
adapter->tx_pcb.data.memconf.progs = 0;
adapter->tx_pcb.length = sizeof(struct Memconf);
adapter->got[CMD_CONFIGURE_ADAPTER_MEMORY] = 0;
if (!send_pcb(dev, &adapter->tx_pcb))
printk("%s: couldn't send memory configuration command\n", dev->name);
else {
int timeout = jiffies + TIMEOUT;
while (adapter->got[CMD_CONFIGURE_ADAPTER_MEMORY] == 0 && jiffies < timeout);
if (jiffies >= timeout)
TIMEOUT_MSG(__LINE__);
}
/*
* configure adapter to receive broadcast messages and wait for response
*/
if (elp_debug >= 3)
printk("%s: sending 82586 configure command\n", dev->name);
adapter->tx_pcb.command = CMD_CONFIGURE_82586;
adapter->tx_pcb.data.configure = NO_LOOPBACK | RECV_BROAD;
adapter->tx_pcb.length = 2;
adapter->got[CMD_CONFIGURE_82586] = 0;
if (!send_pcb(dev, &adapter->tx_pcb))
printk("%s: couldn't send 82586 configure command\n", dev->name);
else {
int timeout = jiffies + TIMEOUT;
while (adapter->got[CMD_CONFIGURE_82586] == 0 && jiffies < timeout);
if (jiffies >= timeout)
TIMEOUT_MSG(__LINE__);
}
/* enable burst-mode DMA */
outb(0x1, dev->base_addr + PORT_AUXDMA);
/*
* queue receive commands to provide buffering
*/
prime_rx(dev);
if (elp_debug >= 3)
printk("%s: %d receive PCBs active\n", dev->name, adapter->rx_active);
MOD_INC_USE_COUNT;
return 0; /* Always succeed */
}
/******************************************************
*
* send a packet to the adapter
*
******************************************************/
static int send_packet(struct device *dev, struct sk_buff *skb)
{
elp_device *adapter = dev->priv;
unsigned long target;
/*
* make sure the length is even and no shorter than 60 bytes
*/
unsigned int nlen = (((skb->len < 60) ? 60 : skb->len) + 1) & (~1);
if (set_bit(0, (void *) &adapter->busy)) {
if (elp_debug >= 2)
printk("%s: transmit blocked\n", dev->name);
return FALSE;
}
adapter = dev->priv;
/*
* send the adapter a transmit packet command. Ignore segment and offset
* and make sure the length is even
*/
adapter->tx_pcb.command = CMD_TRANSMIT_PACKET;
adapter->tx_pcb.length = sizeof(struct Xmit_pkt);
adapter->tx_pcb.data.xmit_pkt.buf_ofs
= adapter->tx_pcb.data.xmit_pkt.buf_seg = 0; /* Unused */
adapter->tx_pcb.data.xmit_pkt.pkt_len = nlen;
if (!send_pcb(dev, &adapter->tx_pcb)) {
adapter->busy = 0;
return FALSE;
}
/* if this happens, we die */
if (set_bit(0, (void *) &adapter->dmaing))
printk("%s: tx: DMA %d in progress\n", dev->name, adapter->current_dma.direction);
adapter->current_dma.direction = 1;
adapter->current_dma.start_time = jiffies;
target = virt_to_bus(skb->data);
if ((target + nlen) >= MAX_DMA_ADDRESS) {
memcpy(adapter->dma_buffer, skb->data, nlen);
target = virt_to_bus(adapter->dma_buffer);
}
adapter->current_dma.skb = skb;
cli();
disable_dma(dev->dma);
clear_dma_ff(dev->dma);
set_dma_mode(dev->dma, 0x08); /* dma memory -> io */
set_dma_addr(dev->dma, target);
set_dma_count(dev->dma, nlen);
enable_dma(dev->dma);
outb_control(inb_control(dev->base_addr) | DMAE | TCEN, dev->base_addr);
if (elp_debug >= 3)
printk("%s: DMA transfer started\n", dev->name);
return TRUE;
}
/******************************************************
*
* start the transmitter
* return 0 if sent OK, else return 1
*
******************************************************/
static int elp_start_xmit(struct sk_buff *skb, struct device *dev)
{
if (dev->interrupt) {
printk("%s: start_xmit aborted (in irq)\n", dev->name);
return 1;
}
check_dma(dev);
/*
* if the transmitter is still busy, we have a transmit timeout...
*/
if (dev->tbusy) {
elp_device *adapter = dev->priv;
int tickssofar = jiffies - dev->trans_start;
int stat;
if (tickssofar < 1000)
return 1;
stat = inb_status(dev->base_addr);
printk("%s: transmit timed out, lost %s?\n", dev->name, (stat & ACRF) ? "interrupt" : "command");
if (elp_debug >= 1)
printk("%s: status %#02x\n", dev->name, stat);
dev->trans_start = jiffies;
dev->tbusy = 0;
adapter->stats.tx_dropped++;
}
/* Some upper layer thinks we've missed a tx-done interrupt */
if (skb == NULL) {
dev_tint(dev);
return 0;
}
if (skb->len <= 0)
return 0;
if (elp_debug >= 3)
printk("%s: request to send packet of length %d\n", dev->name, (int) skb->len);
if (set_bit(0, (void *) &dev->tbusy)) {
printk("%s: transmitter access conflict\n", dev->name);
return 1;
}
/*
* send the packet at skb->data for skb->len
*/
if (!send_packet(dev, skb)) {
if (elp_debug >= 2) {
printk("%s: failed to transmit packet\n", dev->name);
}
dev->tbusy = 0;
return 1;
}
if (elp_debug >= 3)
printk("%s: packet of length %d sent\n", dev->name, (int) skb->len);
/*
* start the transmit timeout
*/
dev->trans_start = jiffies;
prime_rx(dev);
return 0;
}
/******************************************************
*
* return statistics on the board
*
******************************************************/
static struct enet_statistics *elp_get_stats(struct device *dev)
{
elp_device *adapter = (elp_device *) dev->priv;
if (elp_debug >= 3)
printk("%s: request for stats\n", dev->name);
/* If the device is closed, just return the latest stats we have,
- we cannot ask from the adapter without interrupts */
if (!dev->start)
return &adapter->stats;
/* send a get statistics command to the board */
adapter->tx_pcb.command = CMD_NETWORK_STATISTICS;
adapter->tx_pcb.length = 0;
adapter->got[CMD_NETWORK_STATISTICS] = 0;
if (!send_pcb(dev, &adapter->tx_pcb))
printk("%s: couldn't send get statistics command\n", dev->name);
else {
int timeout = jiffies + TIMEOUT;
while (adapter->got[CMD_NETWORK_STATISTICS] == 0 && jiffies < timeout);
if (jiffies >= timeout) {
TIMEOUT_MSG(__LINE__);
return &adapter->stats;
}
}
/* statistics are now up to date */
return &adapter->stats;
}
/******************************************************
*
* close the board
*
******************************************************/
static int elp_close(struct device *dev)
{
elp_device *adapter;
adapter = dev->priv;
if (elp_debug >= 3)
printk("%s: request to close device\n", dev->name);
/* Someone may request the device statistic information even when
* the interface is closed. The following will update the statistics
* structure in the driver, so we'll be able to give current statistics.
*/
(void) elp_get_stats(dev);
/*
* disable interrupts on the board
*/
outb_control(0x00, dev->base_addr);
/*
* flag transmitter as busy (i.e. not available)
*/
dev->tbusy = 1;
/*
* indicate device is closed
*/
dev->start = 0;
/*
* release the IRQ
*/
free_irq(dev->irq, NULL);
/*
* and we no longer have to map irq to dev either
*/
irq2dev_map[dev->irq] = 0;
free_dma(dev->dma);
free_pages((unsigned long) adapter->dma_buffer, __get_order(DMA_BUFFER_SIZE));
MOD_DEC_USE_COUNT;
return 0;
}
/************************************************************
*
* Set multicast list
* num_addrs==0: clear mc_list
* num_addrs==-1: set promiscuous mode
* num_addrs>0: set mc_list
*
************************************************************/
static void elp_set_mc_list(struct device *dev)
{
elp_device *adapter = (elp_device *) dev->priv;
struct dev_mc_list *dmi = dev->mc_list;
int i;
if (elp_debug >= 3)
printk("%s: request to set multicast list\n", dev->name);
if (!(dev->flags & (IFF_PROMISC | IFF_ALLMULTI))) {
/* send a "load multicast list" command to the board, max 10 addrs/cmd */
/* if num_addrs==0 the list will be cleared */
adapter->tx_pcb.command = CMD_LOAD_MULTICAST_LIST;
adapter->tx_pcb.length = 6 * dev->mc_count;
for (i = 0; i < dev->mc_count; i++) {
memcpy(adapter->tx_pcb.data.multicast[i], dmi->dmi_addr, 6);
dmi = dmi->next;
}
adapter->got[CMD_LOAD_MULTICAST_LIST] = 0;
if (!send_pcb(dev, &adapter->tx_pcb))
printk("%s: couldn't send set_multicast command\n", dev->name);
else {
int timeout = jiffies + TIMEOUT;
while (adapter->got[CMD_LOAD_MULTICAST_LIST] == 0 && jiffies < timeout);
if (jiffies >= timeout) {
TIMEOUT_MSG(__LINE__);
}
}
if (dev->mc_count)
adapter->tx_pcb.data.configure = NO_LOOPBACK | RECV_BROAD | RECV_MULTI;
else /* num_addrs == 0 */
adapter->tx_pcb.data.configure = NO_LOOPBACK | RECV_BROAD;
} else
adapter->tx_pcb.data.configure = NO_LOOPBACK | RECV_PROMISC;
/*
* configure adapter to receive messages (as specified above)
* and wait for response
*/
if (elp_debug >= 3)
printk("%s: sending 82586 configure command\n", dev->name);
adapter->tx_pcb.command = CMD_CONFIGURE_82586;
adapter->tx_pcb.length = 2;
adapter->got[CMD_CONFIGURE_82586] = 0;
if (!send_pcb(dev, &adapter->tx_pcb))
printk("%s: couldn't send 82586 configure command\n", dev->name);
else {
int timeout = jiffies + TIMEOUT;
while (adapter->got[CMD_CONFIGURE_82586] == 0 && jiffies < timeout);
if (jiffies >= timeout)
TIMEOUT_MSG(__LINE__);
}
}
/******************************************************
*
* initialise Etherlink Plus board
*
******************************************************/
static void elp_init(struct device *dev)
{
elp_device *adapter = dev->priv;
/*
* set ptrs to various functions
*/
dev->open = elp_open; /* local */
dev->stop = elp_close; /* local */
dev->get_stats = elp_get_stats; /* local */
dev->hard_start_xmit = elp_start_xmit; /* local */
dev->set_multicast_list = elp_set_mc_list; /* local */
/* Setup the generic properties */
ether_setup(dev);
/*
* setup ptr to adapter specific information
*/
memset(&(adapter->stats), 0, sizeof(struct enet_statistics));
/*
* memory information
*/
dev->mem_start = dev->mem_end = dev->rmem_end = dev->rmem_start = 0;
}
/************************************************************
*
* A couple of tests to see if there's 3C505 or not
* Called only by elp_autodetect
************************************************************/
static int elp_sense(struct device *dev)
{
int timeout;
int addr = dev->base_addr;
const char *name = dev->name;
long flags;
byte orig_HCR, orig_HSR;
if (check_region(addr, 0xf))
return -1;
orig_HCR = inb_control(addr);
orig_HSR = inb_status(addr);
if (elp_debug > 0)
printk(search_msg, name, addr);
if (((orig_HCR == 0xff) && (orig_HSR == 0xff)) ||
((orig_HCR & DIR) != (orig_HSR & DIR))) {
if (elp_debug > 0)
printk(notfound_msg, 1);
return -1; /* It can't be 3c505 if HCR.DIR != HSR.DIR */
}
/* Enable interrupts - we need timers! */
save_flags(flags);
sti();
/* Wait for a while; the adapter may still be booting up */
if (elp_debug > 0)
printk(stilllooking_msg);
if (orig_HCR & DIR) {
/* If HCR.DIR is up, we pull it down. HSR.DIR should follow. */
outb_control(orig_HCR & ~DIR, addr);
timeout = jiffies + 30;
while (jiffies < timeout);
restore_flags(flags);
if (inb_status(addr) & DIR) {
outb_control(orig_HCR, addr);
if (elp_debug > 0)
printk(notfound_msg, 2);
return -1;
}
} else {
/* If HCR.DIR is down, we pull it up. HSR.DIR should follow. */
outb_control(orig_HCR | DIR, addr);
timeout = jiffies + 30;
while (jiffies < timeout);
restore_flags(flags);
if (!(inb_status(addr) & DIR)) {
outb_control(orig_HCR, addr);
if (elp_debug > 0)
printk(notfound_msg, 3);
return -1;
}
}
/*
* It certainly looks like a 3c505. If it has DMA enabled, it needs
* a hard reset. Also, do a hard reset if selected at the compile time.
*/
if (elp_debug > 0)
printk(found_msg);
return 0;
}
/*************************************************************
*
* Search through addr_list[] and try to find a 3C505
* Called only by eplus_probe
*************************************************************/
static int elp_autodetect(struct device *dev)
{
int idx = 0;
/* if base address set, then only check that address
otherwise, run through the table */
if (dev->base_addr != 0) { /* dev->base_addr == 0 ==> plain autodetect */
if (elp_sense(dev) == 0)
return dev->base_addr;
} else
while ((dev->base_addr = addr_list[idx++])) {
if (elp_sense(dev) == 0)
return dev->base_addr;
}
/* could not find an adapter */
if (elp_debug > 0)
printk(couldnot_msg, dev->name);
return 0; /* Because of this, the layer above will return -ENODEV */
}
/******************************************************
*
* probe for an Etherlink Plus board at the specified address
*
******************************************************/
/* There are three situations we need to be able to detect here:
* a) the card is idle
* b) the card is still booting up
* c) the card is stuck in a strange state (some DOS drivers do this)
*
* In case (a), all is well. In case (b), we wait 10 seconds to see if the
* card finishes booting, and carry on if so. In case (c), we do a hard reset,
* loop round, and hope for the best.
*
* This is all very unpleasant, but hopefully avoids the problems with the old
* probe code (which had a 15-second delay if the card was idle, and didn't
* work at all if it was in a weird state).
*/
int elplus_probe(struct device *dev)
{
elp_device *adapter;
int i, tries, tries1, timeout, okay;
/*
* setup adapter structure
*/
dev->base_addr = elp_autodetect(dev);
if (!(dev->base_addr))
return -ENODEV;
/*
* setup ptr to adapter specific information
*/
adapter = (elp_device *) (dev->priv = kmalloc(sizeof(elp_device), GFP_KERNEL));
if (adapter == NULL) {
printk("%s: out of memory\n", dev->name);
return -ENODEV;
}
for (tries1 = 0; tries1 < 3; tries1++) {
outb_control((inb_control(dev->base_addr) | CMDE) & ~DIR, dev->base_addr);
/* First try to write just one byte, to see if the card is
* responding at all normally.
*/
timeout = jiffies + 5;
okay = 0;
while (jiffies < timeout && !(inb_status(dev->base_addr) & HCRE));
if ((inb_status(dev->base_addr) & HCRE)) {
outb_command(0, dev->base_addr); /* send a spurious byte */
timeout = jiffies + 5;
while (jiffies < timeout && !(inb_status(dev->base_addr) & HCRE));
if (inb_status(dev->base_addr) & HCRE)
okay = 1;
}
if (!okay) {
/* Nope, it's ignoring the command register. This means that
* either it's still booting up, or it's died.
*/
printk("%s: command register wouldn't drain, ", dev->name);
if ((inb_status(dev->base_addr) & 7) == 3) {
/* If the adapter status is 3, it *could* still be booting.
* Give it the benefit of the doubt for 10 seconds.
*/
printk("assuming 3c505 still starting\n");
timeout = jiffies + 10 * HZ;
while (jiffies < timeout && (inb_status(dev->base_addr) & 7));
if (inb_status(dev->base_addr) & 7) {
printk("%s: 3c505 failed to start\n", dev->name);
} else {
okay = 1; /* It started */
}
} else {
/* Otherwise, it must just be in a strange state. We probably
* need to kick it.
*/
printk("3c505 is sulking\n");
}
}
for (tries = 0; tries < 5 && okay; tries++) {
/*
* Try to set the Ethernet address, to make sure that the board
* is working.
*/
adapter->tx_pcb.command = CMD_STATION_ADDRESS;
adapter->tx_pcb.length = 0;
autoirq_setup(0);
if (!send_pcb(dev, &adapter->tx_pcb)) {
printk("%s: could not send first PCB\n", dev->name);
autoirq_report(0);
continue;
}
if (!receive_pcb(dev, &adapter->rx_pcb)) {
printk("%s: could not read first PCB\n", dev->name);
autoirq_report(0);
continue;
}
if ((adapter->rx_pcb.command != CMD_ADDRESS_RESPONSE) ||
(adapter->rx_pcb.length != 6)) {
printk("%s: first PCB wrong (%d, %d)\n", dev->name, adapter->rx_pcb.command, adapter->rx_pcb.length);
autoirq_report(0);
continue;
}
goto okay;
}
/* It's broken. Do a hard reset to re-initialise the board,
* and try again.
*/
printk(KERN_INFO "%s: resetting adapter\n", dev->name);
outb_control(inb_control(dev->base_addr) | FLSH | ATTN, dev->base_addr);
outb_control(inb_control(dev->base_addr) & ~(FLSH | ATTN), dev->base_addr);
}
printk("%s: failed to initialise 3c505\n", dev->name);
return -ENODEV;
okay:
if (dev->irq) { /* Is there a preset IRQ? */
int rpt = autoirq_report(0);
if (dev->irq != rpt) {
printk("%s: warning, irq %d configured but %d detected\n", dev->name, dev->irq, rpt);
return -ENODEV;
}
/* if dev->irq == autoirq_report(0), all is well */
} else /* No preset IRQ; just use what we can detect */
dev->irq = autoirq_report(0);
switch (dev->irq) { /* Legal, sane? */
case 0:
printk("%s: No IRQ reported by autoirq_report().\n", dev->name);
printk("%s: Check the jumpers of your 3c505 board.\n", dev->name);
return -ENODEV;
case 1:
case 6:
case 8:
case 13:
printk("%s: Impossible IRQ %d reported by autoirq_report().\n",
dev->name, dev->irq);
return -ENODEV;
}
/*
* Now we have the IRQ number so we can disable the interrupts from
* the board until the board is opened.
*/
outb_control(inb_control(dev->base_addr) & ~CMDE, dev->base_addr);
/*
* copy ethernet address into structure
*/
for (i = 0; i < 6; i++)
dev->dev_addr[i] = adapter->rx_pcb.data.eth_addr[i];
/* set up the DMA channel */
dev->dma = ELP_DMA;
/*
* print remainder of startup message
*/
printk("%s: 3c505 at %#lx, irq %d, dma %d, ",
dev->name, dev->base_addr, dev->irq, dev->dma);
printk("addr %02x:%02x:%02x:%02x:%02x:%02x, ",
dev->dev_addr[0], dev->dev_addr[1], dev->dev_addr[2],
dev->dev_addr[3], dev->dev_addr[4], dev->dev_addr[5]);
/*
* read more information from the adapter
*/
adapter->tx_pcb.command = CMD_ADAPTER_INFO;
adapter->tx_pcb.length = 0;
if (!send_pcb(dev, &adapter->tx_pcb) ||
!receive_pcb(dev, &adapter->rx_pcb) ||
(adapter->rx_pcb.command != CMD_ADAPTER_INFO_RESPONSE) ||
(adapter->rx_pcb.length != 10)) {
printk("%s: not responding to second PCB\n", dev->name);
}
printk("rev %d.%d, %dk\n", adapter->rx_pcb.data.info.major_vers, adapter->rx_pcb.data.info.minor_vers, adapter->rx_pcb.data.info.RAM_sz);
/*
* reconfigure the adapter memory to better suit our purposes
*/
adapter->tx_pcb.command = CMD_CONFIGURE_ADAPTER_MEMORY;
adapter->tx_pcb.length = 12;
adapter->tx_pcb.data.memconf.cmd_q = 8;
adapter->tx_pcb.data.memconf.rcv_q = 8;
adapter->tx_pcb.data.memconf.mcast = 10;
adapter->tx_pcb.data.memconf.frame = 10;
adapter->tx_pcb.data.memconf.rcv_b = 10;
adapter->tx_pcb.data.memconf.progs = 0;
if (!send_pcb(dev, &adapter->tx_pcb) ||
!receive_pcb(dev, &adapter->rx_pcb) ||
(adapter->rx_pcb.command != CMD_CONFIGURE_ADAPTER_RESPONSE) ||
(adapter->rx_pcb.length != 2)) {
printk("%s: could not configure adapter memory\n", dev->name);
}
if (adapter->rx_pcb.data.configure) {
printk("%s: adapter configuration failed\n", dev->name);
}
/*
* and reserve the address region
*/
request_region(dev->base_addr, ELP_IO_EXTENT, "3c505");
/*
* initialise the device
*/
elp_init(dev);
return 0;
}
#ifdef MODULE
static char devicename[9] = {0,};
static struct device dev_3c505 =
{
devicename, /* device name is inserted by linux/drivers/net/net_init.c */
0, 0, 0, 0,
0, 0,
0, 0, 0, NULL, elplus_probe};
int io = 0x300;
int irq = 0;
int init_module(void)
{
if (io == 0)
printk("3c505: You should not use auto-probing with insmod!\n");
dev_3c505.base_addr = io;
dev_3c505.irq = irq;
if (register_netdev(&dev_3c505) != 0) {
return -EIO;
}
return 0;
}
void cleanup_module(void)
{
unregister_netdev(&dev_3c505);
kfree(dev_3c505.priv);
dev_3c505.priv = NULL;
/* If we don't do this, we can't re-insmod it later. */
release_region(dev_3c505.base_addr, ELP_IO_EXTENT);
}
#endif /* MODULE */
/*
* Local Variables:
* c-file-style: "linux"
* tab-width: 8
* compile-command: "gcc -D__KERNEL__ -I/discs/bibble/src/linux-1.3.69/include -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer -fno-strength-reduce -pipe -m486 -DCPU=486 -DMODULE -c 3c505.c"
* End:
*/
