- 根目录:
- drivers
- net
- 3c505.c
#define DRV_NAME "3c505"
#define DRV_VERSION "1.10a"
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/string.h>
#include <linux/interrupt.h>
#include <linux/errno.h>
#include <linux/in.h>
#include <linux/ioport.h>
#include <linux/spinlock.h>
#include <linux/ethtool.h>
#include <linux/delay.h>
#include <linux/bitops.h>
#include <linux/gfp.h>
#include <asm/uaccess.h>
#include <asm/io.h>
#include <asm/dma.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/skbuff.h>
#include <linux/init.h>
#include "3c505.h"
#define filename __FILE__
#define timeout_msg "*** timeout at %s:%s (line %d) ***\n"
#define TIMEOUT_MSG(lineno) \
pr_notice(timeout_msg, filename, __func__, (lineno))
#define invalid_pcb_msg "*** invalid pcb length %d at %s:%s (line %d) ***\n"
#define INVALID_PCB_MSG(len) \
pr_notice(invalid_pcb_msg, (len), filename, __func__, __LINE__)
#define search_msg "%s: Looking for 3c505 adapter at address %#x..."
#define stilllooking_msg "still looking..."
#define found_msg "found.\n"
#define notfound_msg "not found (reason = %d)\n"
#define couldnot_msg "%s: 3c505 not found\n"
#ifdef ELP_DEBUG
static int elp_debug = ELP_DEBUG;
#else
static int elp_debug;
#endif
#define debug elp_debug
static int addr_list[] __initdata = {0x300, 0x280, 0x310, 0};
static unsigned long dma_mem_alloc(int size)
{
int order = get_order(size);
return __get_dma_pages(GFP_KERNEL, order);
}
static inline unsigned char inb_status(unsigned int base_addr)
{
return inb(base_addr + PORT_STATUS);
}
static inline int inb_command(unsigned int base_addr)
{
return inb(base_addr + PORT_COMMAND);
}
static inline void outb_control(unsigned char val, struct net_device *dev)
{
outb(val, dev->base_addr + PORT_CONTROL);
((elp_device *)(netdev_priv(dev)))->hcr_val = val;
}
#define HCR_VAL(x) (((elp_device *)(netdev_priv(x)))->hcr_val)
static inline void outb_command(unsigned char val, unsigned int base_addr)
{
outb(val, base_addr + PORT_COMMAND);
}
static inline unsigned int backlog_next(unsigned int n)
{
return (n + 1) % BACKLOG_SIZE;
}
#define GET_ASF(addr) \
(get_status(addr)&ASF_PCB_MASK)
static inline int get_status(unsigned int base_addr)
{
unsigned long timeout = jiffies + 10*HZ/100;
register int stat1;
do {
stat1 = inb_status(base_addr);
} while (stat1 != inb_status(base_addr) && time_before(jiffies, timeout));
if (time_after_eq(jiffies, timeout))
TIMEOUT_MSG(__LINE__);
return stat1;
}
static inline void set_hsf(struct net_device *dev, int hsf)
{
elp_device *adapter = netdev_priv(dev);
unsigned long flags;
spin_lock_irqsave(&adapter->lock, flags);
outb_control((HCR_VAL(dev) & ~HSF_PCB_MASK) | hsf, dev);
spin_unlock_irqrestore(&adapter->lock, flags);
}
static bool start_receive(struct net_device *, pcb_struct *);
static inline void adapter_reset(struct net_device *dev)
{
unsigned long timeout;
elp_device *adapter = netdev_priv(dev);
unsigned char orig_hcr = adapter->hcr_val;
outb_control(0, dev);
if (inb_status(dev->base_addr) & ACRF) {
do {
inb_command(dev->base_addr);
timeout = jiffies + 2*HZ/100;
while (time_before_eq(jiffies, timeout) && !(inb_status(dev->base_addr) & ACRF));
} while (inb_status(dev->base_addr) & ACRF);
set_hsf(dev, HSF_PCB_NAK);
}
outb_control(adapter->hcr_val | ATTN | DIR, dev);
mdelay(10);
outb_control(adapter->hcr_val & ~ATTN, dev);
mdelay(10);
outb_control(adapter->hcr_val | FLSH, dev);
mdelay(10);
outb_control(adapter->hcr_val & ~FLSH, dev);
mdelay(10);
outb_control(orig_hcr, dev);
if (!start_receive(dev, &adapter->tx_pcb))
pr_err("%s: start receive command failed\n", dev->name);
}
static inline void check_3c505_dma(struct net_device *dev)
{
elp_device *adapter = netdev_priv(dev);
if (adapter->dmaing && time_after(jiffies, adapter->current_dma.start_time + 10)) {
unsigned long flags, f;
pr_err("%s: DMA %s timed out, %d bytes left\n", dev->name,
adapter->current_dma.direction ? "download" : "upload",
get_dma_residue(dev->dma));
spin_lock_irqsave(&adapter->lock, flags);
adapter->dmaing = 0;
adapter->busy = 0;
f=claim_dma_lock();
disable_dma(dev->dma);
release_dma_lock(f);
if (adapter->rx_active)
adapter->rx_active--;
outb_control(adapter->hcr_val & ~(DMAE | TCEN | DIR), dev);
spin_unlock_irqrestore(&adapter->lock, flags);
}
}
static inline bool send_pcb_slow(unsigned int base_addr, unsigned char byte)
{
unsigned long timeout;
outb_command(byte, base_addr);
for (timeout = jiffies + 5*HZ/100; time_before(jiffies, timeout);) {
if (inb_status(base_addr) & HCRE)
return false;
}
pr_warning("3c505: send_pcb_slow timed out\n");
return true;
}
static inline bool 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;
}
pr_warning("3c505: send_pcb_fast timed out\n");
return true;
}
static inline void prime_rx(struct net_device *dev)
{
elp_device *adapter = netdev_priv(dev);
while (adapter->rx_active < ELP_RX_PCBS && netif_running(dev)) {
if (!start_receive(dev, &adapter->itx_pcb))
break;
}
}
static bool send_pcb(struct net_device *dev, pcb_struct * pcb)
{
int i;
unsigned long timeout;
elp_device *adapter = netdev_priv(dev);
unsigned long flags;
check_3c505_dma(dev);
if (adapter->dmaing && adapter->current_dma.direction == 0)
return false;
if (test_and_set_bit(1, &adapter->send_pcb_semaphore)) {
if (elp_debug >= 3) {
pr_debug("%s: send_pcb entered while threaded\n", dev->name);
}
return false;
}
set_hsf(dev, 0);
if (send_pcb_slow(dev->base_addr, pcb->command))
goto abort;
spin_lock_irqsave(&adapter->lock, flags);
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(adapter->hcr_val | 3, dev);
outb_command(2 + pcb->length, dev->base_addr);
spin_unlock_irqrestore(&adapter->lock, flags);
for (timeout = jiffies + 5*HZ/100; time_before(jiffies, timeout);) {
switch (GET_ASF(dev->base_addr)) {
case ASF_PCB_ACK:
adapter->send_pcb_semaphore = 0;
return true;
case ASF_PCB_NAK:
#ifdef ELP_DEBUG
pr_debug("%s: send_pcb got NAK\n", dev->name);
#endif
goto abort;
}
}
if (elp_debug >= 1)
pr_debug("%s: timeout waiting for PCB acknowledge (status %02x)\n",
dev->name, inb_status(dev->base_addr));
goto abort;
sti_abort:
spin_unlock_irqrestore(&adapter->lock, flags);
abort:
adapter->send_pcb_semaphore = 0;
return false;
}
static bool receive_pcb(struct net_device *dev, pcb_struct * pcb)
{
int i, j;
int total_length;
int stat;
unsigned long timeout;
unsigned long flags;
elp_device *adapter = netdev_priv(dev);
set_hsf(dev, 0);
timeout = jiffies + 2*HZ/100;
while (((stat = get_status(dev->base_addr)) & ACRF) == 0 && time_before(jiffies, timeout));
if (time_after_eq(jiffies, timeout)) {
TIMEOUT_MSG(__LINE__);
return false;
}
pcb->command = inb_command(dev->base_addr);
timeout = jiffies + 3*HZ/100;
while (((stat = get_status(dev->base_addr)) & ACRF) == 0 && time_before(jiffies, timeout));
if (time_after_eq(jiffies, timeout)) {
TIMEOUT_MSG(__LINE__);
pr_info("%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;
}
spin_lock_irqsave(&adapter->lock, flags);
for (i = 0; i < MAX_PCB_DATA; i++) {
for (j = 0; j < 20000; j++) {
stat = get_status(dev->base_addr);
if (stat & ACRF)
break;
}
pcb->data.raw[i] = inb_command(dev->base_addr);
if ((stat & ASF_PCB_MASK) == ASF_PCB_END || j >= 20000)
break;
}
spin_unlock_irqrestore(&adapter->lock, flags);
if (i >= MAX_PCB_DATA) {
INVALID_PCB_MSG(i);
return false;
}
if (j >= 20000) {
TIMEOUT_MSG(__LINE__);
return false;
}
total_length = pcb->data.raw[i];
if (total_length != (pcb->length + 2)) {
if (elp_debug >= 2)
pr_warning("%s: mangled PCB received\n", dev->name);
set_hsf(dev, HSF_PCB_NAK);
return false;
}
if (pcb->command == CMD_RECEIVE_PACKET_COMPLETE) {
if (test_and_set_bit(0, (void *) &adapter->busy)) {
if (backlog_next(adapter->rx_backlog.in) == adapter->rx_backlog.out) {
set_hsf(dev, HSF_PCB_NAK);
pr_warning("%s: PCB rejected, transfer in progress and backlog full\n", dev->name);
pcb->command = 0;
return true;
} else {
pcb->command = 0xff;
}
}
}
set_hsf(dev, HSF_PCB_ACK);
return true;
}
static bool start_receive(struct net_device *dev, pcb_struct * tx_pcb)
{
bool status;
elp_device *adapter = netdev_priv(dev);
if (elp_debug >= 3)
pr_debug("%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;
tx_pcb->data.rcv_pkt.buf_len = 1600;
tx_pcb->data.rcv_pkt.timeout = 0;
status = send_pcb(dev, tx_pcb);
if (status)
adapter->rx_active++;
return status;
}
static void receive_packet(struct net_device *dev, int len)
{
int rlen;
elp_device *adapter = netdev_priv(dev);
void *target;
struct sk_buff *skb;
unsigned long flags;
rlen = (len + 1) & ~1;
skb = dev_alloc_skb(rlen + 2);
if (!skb) {
pr_warning("%s: memory squeeze, dropping packet\n", dev->name);
target = adapter->dma_buffer;
adapter->current_dma.target = NULL;
return;
}
skb_reserve(skb, 2);
target = skb_put(skb, rlen);
if ((unsigned long)(target + rlen) >= MAX_DMA_ADDRESS) {
adapter->current_dma.target = target;
target = adapter->dma_buffer;
} else {
adapter->current_dma.target = NULL;
}
if (test_and_set_bit(0, (void *) &adapter->dmaing))
pr_err("%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(adapter->hcr_val | DIR | TCEN | DMAE, dev);
flags=claim_dma_lock();
disable_dma(dev->dma);
clear_dma_ff(dev->dma);
set_dma_mode(dev->dma, 0x04);
set_dma_addr(dev->dma, isa_virt_to_bus(target));
set_dma_count(dev->dma, rlen);
enable_dma(dev->dma);
release_dma_lock(flags);
if (elp_debug >= 3) {
pr_debug("%s: rx DMA transfer started\n", dev->name);
}
if (adapter->rx_active)
adapter->rx_active--;
if (!adapter->busy)
pr_warning("%s: receive_packet called, busy not set.\n", dev->name);
}
static irqreturn_t elp_interrupt(int irq, void *dev_id)
{
int len;
int dlen;
int icount = 0;
struct net_device *dev = dev_id;
elp_device *adapter = netdev_priv(dev);
unsigned long timeout;
spin_lock(&adapter->lock);
do {
if (inb_status(dev->base_addr) & DONE) {
if (!adapter->dmaing)
pr_warning("%s: phantom DMA completed\n", dev->name);
if (elp_debug >= 3)
pr_debug("%s: %s DMA complete, status %02x\n", dev->name,
adapter->current_dma.direction ? "tx" : "rx",
inb_status(dev->base_addr));
outb_control(adapter->hcr_val & ~(DMAE | TCEN | DIR), dev);
if (adapter->current_dma.direction) {
dev_kfree_skb_irq(adapter->current_dma.skb);
} else {
struct sk_buff *skb = adapter->current_dma.skb;
if (skb) {
if (adapter->current_dma.target) {
memcpy(adapter->current_dma.target, adapter->dma_buffer, adapter->current_dma.length);
}
skb->protocol = eth_type_trans(skb,dev);
dev->stats.rx_bytes += skb->len;
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)
pr_debug("%s: receiving backlogged packet (%d)\n", dev->name, t);
receive_packet(dev, t);
} else {
adapter->busy = 0;
}
} else {
check_3c505_dma(dev);
}
timeout = jiffies + 3*HZ/100;
while ((inb_status(dev->base_addr) & ACRF) != 0 && time_before(jiffies, timeout)) {
if (receive_pcb(dev, &adapter->irx_pcb)) {
switch (adapter->irx_pcb.command)
{
case 0:
break;
case 0xff:
case CMD_RECEIVE_PACKET_COMPLETE:
if (!netif_running(dev))
break;
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) {
pr_err("%s: interrupt - packet not received correctly\n", dev->name);
} else {
if (elp_debug >= 3) {
pr_debug("%s: interrupt - packet received of length %i (%i)\n",
dev->name, len, dlen);
}
if (adapter->irx_pcb.command == 0xff) {
if (elp_debug >= 2)
pr_debug("%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);
}
if (elp_debug >= 3)
pr_debug("%s: packet received\n", dev->name);
}
break;
case CMD_CONFIGURE_82586_RESPONSE:
adapter->got[CMD_CONFIGURE_82586] = 1;
if (elp_debug >= 3)
pr_debug("%s: interrupt - configure response received\n", dev->name);
break;
case CMD_CONFIGURE_ADAPTER_RESPONSE:
adapter->got[CMD_CONFIGURE_ADAPTER_MEMORY] = 1;
if (elp_debug >= 3)
pr_debug("%s: Adapter memory configuration %s.\n", dev->name,
adapter->irx_pcb.data.failed ? "failed" : "succeeded");
break;
case CMD_LOAD_MULTICAST_RESPONSE:
adapter->got[CMD_LOAD_MULTICAST_LIST] = 1;
if (elp_debug >= 3)
pr_debug("%s: Multicast address list loading %s.\n", dev->name,
adapter->irx_pcb.data.failed ? "failed" : "succeeded");
break;
case CMD_SET_ADDRESS_RESPONSE:
adapter->got[CMD_SET_STATION_ADDRESS] = 1;
if (elp_debug >= 3)
pr_debug("%s: Ethernet address setting %s.\n", dev->name,
adapter->irx_pcb.data.failed ? "failed" : "succeeded");
break;
case CMD_NETWORK_STATISTICS_RESPONSE:
dev->stats.rx_packets += adapter->irx_pcb.data.netstat.tot_recv;
dev->stats.tx_packets += adapter->irx_pcb.data.netstat.tot_xmit;
dev->stats.rx_crc_errors += adapter->irx_pcb.data.netstat.err_CRC;
dev->stats.rx_frame_errors += adapter->irx_pcb.data.netstat.err_align;
dev->stats.rx_fifo_errors += adapter->irx_pcb.data.netstat.err_ovrrun;
dev->stats.rx_over_errors += adapter->irx_pcb.data.netstat.err_res;
adapter->got[CMD_NETWORK_STATISTICS] = 1;
if (elp_debug >= 3)
pr_debug("%s: interrupt - statistics response received\n", dev->name);
break;
case CMD_TRANSMIT_PACKET_COMPLETE:
if (elp_debug >= 3)
pr_debug("%s: interrupt - packet sent\n", dev->name);
if (!netif_running(dev))
break;
switch (adapter->irx_pcb.data.xmit_resp.c_stat) {
case 0xffff:
dev->stats.tx_aborted_errors++;
pr_info("%s: transmit timed out, network cable problem?\n", dev->name);
break;
case 0xfffe:
dev->stats.tx_fifo_errors++;
pr_info("%s: transmit timed out, FIFO underrun\n", dev->name);
break;
}
netif_wake_queue(dev);
break;
default:
pr_debug("%s: unknown PCB received - %2.2x\n",
dev->name, adapter->irx_pcb.command);
break;
}
} else {
pr_warning("%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);
spin_unlock(&adapter->lock);
return IRQ_HANDLED;
}
static int elp_open(struct net_device *dev)
{
elp_device *adapter = netdev_priv(dev);
int retval;
if (elp_debug >= 3)
pr_debug("%s: request to open device\n", dev->name);
if (adapter == NULL) {
pr_err("%s: Opening a non-existent physical device\n", dev->name);
return -EAGAIN;
}
outb_control(0, dev);
inb_command(dev->base_addr);
adapter_reset(dev);
adapter->rx_active = 0;
adapter->busy = 0;
adapter->send_pcb_semaphore = 0;
adapter->rx_backlog.in = 0;
adapter->rx_backlog.out = 0;
spin_lock_init(&adapter->lock);
if ((retval = request_irq(dev->irq, elp_interrupt, 0, dev->name, dev))) {
pr_err("%s: could not allocate IRQ%d\n", dev->name, dev->irq);
return retval;
}
if ((retval = request_dma(dev->dma, dev->name))) {
free_irq(dev->irq, dev);
pr_err("%s: could not allocate DMA%d channel\n", dev->name, dev->dma);
return retval;
}
adapter->dma_buffer = (void *) dma_mem_alloc(DMA_BUFFER_SIZE);
if (!adapter->dma_buffer) {
pr_err("%s: could not allocate DMA buffer\n", dev->name);
free_dma(dev->dma);
free_irq(dev->irq, dev);
return -ENOMEM;
}
adapter->dmaing = 0;
outb_control(CMDE, dev);
if (elp_debug >= 3)
pr_debug("%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))
pr_err("%s: couldn't send memory configuration command\n", dev->name);
else {
unsigned long timeout = jiffies + TIMEOUT;
while (adapter->got[CMD_CONFIGURE_ADAPTER_MEMORY] == 0 && time_before(jiffies, timeout));
if (time_after_eq(jiffies, timeout))
TIMEOUT_MSG(__LINE__);
}
if (elp_debug >= 3)
pr_debug("%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))
pr_err("%s: couldn't send 82586 configure command\n", dev->name);
else {
unsigned long timeout = jiffies + TIMEOUT;
while (adapter->got[CMD_CONFIGURE_82586] == 0 && time_before(jiffies, timeout));
if (time_after_eq(jiffies, timeout))
TIMEOUT_MSG(__LINE__);
}
prime_rx(dev);
if (elp_debug >= 3)
pr_debug("%s: %d receive PCBs active\n", dev->name, adapter->rx_active);
netif_start_queue(dev);
return 0;
}
static netdev_tx_t send_packet(struct net_device *dev, struct sk_buff *skb)
{
elp_device *adapter = netdev_priv(dev);
unsigned long target;
unsigned long flags;
unsigned int nlen = (((skb->len < 60) ? 60 : skb->len) + 1) & (~1);
if (test_and_set_bit(0, (void *) &adapter->busy)) {
if (elp_debug >= 2)
pr_debug("%s: transmit blocked\n", dev->name);
return false;
}
dev->stats.tx_bytes += nlen;
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;
adapter->tx_pcb.data.xmit_pkt.pkt_len = nlen;
if (!send_pcb(dev, &adapter->tx_pcb)) {
adapter->busy = 0;
return false;
}
if (test_and_set_bit(0, (void *) &adapter->dmaing))
pr_debug("%s: tx: DMA %d in progress\n", dev->name, adapter->current_dma.direction);
adapter->current_dma.direction = 1;
adapter->current_dma.start_time = jiffies;
if ((unsigned long)(skb->data + nlen) >= MAX_DMA_ADDRESS || nlen != skb->len) {
skb_copy_from_linear_data(skb, adapter->dma_buffer, nlen);
memset(adapter->dma_buffer+skb->len, 0, nlen-skb->len);
target = isa_virt_to_bus(adapter->dma_buffer);
}
else {
target = isa_virt_to_bus(skb->data);
}
adapter->current_dma.skb = skb;
flags=claim_dma_lock();
disable_dma(dev->dma);
clear_dma_ff(dev->dma);
set_dma_mode(dev->dma, 0x48);
set_dma_addr(dev->dma, target);
set_dma_count(dev->dma, nlen);
outb_control(adapter->hcr_val | DMAE | TCEN, dev);
enable_dma(dev->dma);
release_dma_lock(flags);
if (elp_debug >= 3)
pr_debug("%s: DMA transfer started\n", dev->name);
return true;
}
static void elp_timeout(struct net_device *dev)
{
int stat;
stat = inb_status(dev->base_addr);
pr_warning("%s: transmit timed out, lost %s?\n", dev->name,
(stat & ACRF) ? "interrupt" : "command");
if (elp_debug >= 1)
pr_debug("%s: status %#02x\n", dev->name, stat);
dev->trans_start = jiffies;
dev->stats.tx_dropped++;
netif_wake_queue(dev);
}
static netdev_tx_t elp_start_xmit(struct sk_buff *skb, struct net_device *dev)
{
unsigned long flags;
elp_device *adapter = netdev_priv(dev);
spin_lock_irqsave(&adapter->lock, flags);
check_3c505_dma(dev);
if (elp_debug >= 3)
pr_debug("%s: request to send packet of length %d\n", dev->name, (int) skb->len);
netif_stop_queue(dev);
if (!send_packet(dev, skb)) {
if (elp_debug >= 2) {
pr_debug("%s: failed to transmit packet\n", dev->name);
}
spin_unlock_irqrestore(&adapter->lock, flags);
return NETDEV_TX_BUSY;
}
if (elp_debug >= 3)
pr_debug("%s: packet of length %d sent\n", dev->name, (int) skb->len);
prime_rx(dev);
spin_unlock_irqrestore(&adapter->lock, flags);
netif_start_queue(dev);
return NETDEV_TX_OK;
}
static struct net_device_stats *elp_get_stats(struct net_device *dev)
{
elp_device *adapter = netdev_priv(dev);
if (elp_debug >= 3)
pr_debug("%s: request for stats\n", dev->name);
if (!netif_running(dev))
return &dev->stats;
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))
pr_err("%s: couldn't send get statistics command\n", dev->name);
else {
unsigned long timeout = jiffies + TIMEOUT;
while (adapter->got[CMD_NETWORK_STATISTICS] == 0 && time_before(jiffies, timeout));
if (time_after_eq(jiffies, timeout)) {
TIMEOUT_MSG(__LINE__);
return &dev->stats;
}
}
return &dev->stats;
}
static void netdev_get_drvinfo(struct net_device *dev,
struct ethtool_drvinfo *info)
{
strcpy(info->driver, DRV_NAME);
strcpy(info->version, DRV_VERSION);
sprintf(info->bus_info, "ISA 0x%lx", dev->base_addr);
}
static u32 netdev_get_msglevel(struct net_device *dev)
{
return debug;
}
static void netdev_set_msglevel(struct net_device *dev, u32 level)
{
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,
};
static int elp_close(struct net_device *dev)
{
elp_device *adapter = netdev_priv(dev);
if (elp_debug >= 3)
pr_debug("%s: request to close device\n", dev->name);
netif_stop_queue(dev);
(void) elp_get_stats(dev);
outb_control(0, dev);
free_irq(dev->irq, dev);
free_dma(dev->dma);
free_pages((unsigned long) adapter->dma_buffer, get_order(DMA_BUFFER_SIZE));
return 0;
}
static void elp_set_mc_list(struct net_device *dev)
{
elp_device *adapter = netdev_priv(dev);
struct netdev_hw_addr *ha;
int i;
unsigned long flags;
if (elp_debug >= 3)
pr_debug("%s: request to set multicast list\n", dev->name);
spin_lock_irqsave(&adapter->lock, flags);
if (!(dev->flags & (IFF_PROMISC | IFF_ALLMULTI))) {
adapter->tx_pcb.command = CMD_LOAD_MULTICAST_LIST;
adapter->tx_pcb.length = 6 * netdev_mc_count(dev);
i = 0;
netdev_for_each_mc_addr(ha, dev)
memcpy(adapter->tx_pcb.data.multicast[i++],
ha->addr, 6);
adapter->got[CMD_LOAD_MULTICAST_LIST] = 0;
if (!send_pcb(dev, &adapter->tx_pcb))
pr_err("%s: couldn't send set_multicast command\n", dev->name);
else {
unsigned long timeout = jiffies + TIMEOUT;
while (adapter->got[CMD_LOAD_MULTICAST_LIST] == 0 && time_before(jiffies, timeout));
if (time_after_eq(jiffies, timeout)) {
TIMEOUT_MSG(__LINE__);
}
}
if (!netdev_mc_empty(dev))
adapter->tx_pcb.data.configure = NO_LOOPBACK | RECV_BROAD | RECV_MULTI;
else
adapter->tx_pcb.data.configure = NO_LOOPBACK | RECV_BROAD;
} else
adapter->tx_pcb.data.configure = NO_LOOPBACK | RECV_PROMISC;
if (elp_debug >= 3)
pr_debug("%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))
{
spin_unlock_irqrestore(&adapter->lock, flags);
pr_err("%s: couldn't send 82586 configure command\n", dev->name);
}
else {
unsigned long timeout = jiffies + TIMEOUT;
spin_unlock_irqrestore(&adapter->lock, flags);
while (adapter->got[CMD_CONFIGURE_82586] == 0 && time_before(jiffies, timeout));
if (time_after_eq(jiffies, timeout))
TIMEOUT_MSG(__LINE__);
}
}
static int __init elp_sense(struct net_device *dev)
{
int addr = dev->base_addr;
const char *name = dev->name;
byte orig_HSR;
if (!request_region(addr, ELP_IO_EXTENT, "3c505"))
return -ENODEV;
orig_HSR = inb_status(addr);
if (elp_debug > 0)
pr_debug(search_msg, name, addr);
if (orig_HSR == 0xff) {
if (elp_debug > 0)
pr_cont(notfound_msg, 1);
goto out;
}
if (elp_debug > 0)
pr_cont(stilllooking_msg);
if (orig_HSR & DIR) {
outb(0, dev->base_addr + PORT_CONTROL);
msleep(300);
if (inb_status(addr) & DIR) {
if (elp_debug > 0)
pr_cont(notfound_msg, 2);
goto out;
}
} else {
outb(DIR, dev->base_addr + PORT_CONTROL);
msleep(300);
if (!(inb_status(addr) & DIR)) {
if (elp_debug > 0)
pr_cont(notfound_msg, 3);
goto out;
}
}
if (elp_debug > 0)
pr_cont(found_msg);
return 0;
out:
release_region(addr, ELP_IO_EXTENT);
return -ENODEV;
}
static int __init elp_autodetect(struct net_device *dev)
{
int idx = 0;
if (dev->base_addr != 0) {
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;
}
if (elp_debug > 0)
pr_debug(couldnot_msg, dev->name);
return 0;
}
static const struct net_device_ops elp_netdev_ops = {
.ndo_open = elp_open,
.ndo_stop = elp_close,
.ndo_get_stats = elp_get_stats,
.ndo_start_xmit = elp_start_xmit,
.ndo_tx_timeout = elp_timeout,
.ndo_set_multicast_list = elp_set_mc_list,
.ndo_change_mtu = eth_change_mtu,
.ndo_set_mac_address = eth_mac_addr,
.ndo_validate_addr = eth_validate_addr,
};
static int __init elplus_setup(struct net_device *dev)
{
elp_device *adapter = netdev_priv(dev);
int i, tries, tries1, okay;
unsigned long timeout;
unsigned long cookie = 0;
int err = -ENODEV;
dev->base_addr = elp_autodetect(dev);
if (!dev->base_addr)
return -ENODEV;
adapter->send_pcb_semaphore = 0;
for (tries1 = 0; tries1 < 3; tries1++) {
outb_control((adapter->hcr_val | CMDE) & ~DIR, dev);
timeout = jiffies + 5*HZ/100;
okay = 0;
while (time_before(jiffies, timeout) && !(inb_status(dev->base_addr) & HCRE));
if ((inb_status(dev->base_addr) & HCRE)) {
outb_command(0, dev->base_addr);
timeout = jiffies + 5*HZ/100;
while (time_before(jiffies, timeout) && !(inb_status(dev->base_addr) & HCRE));
if (inb_status(dev->base_addr) & HCRE)
okay = 1;
}
if (!okay) {
pr_err("%s: command register wouldn't drain, ", dev->name);
if ((inb_status(dev->base_addr) & 7) == 3) {
pr_cont("assuming 3c505 still starting\n");
timeout = jiffies + 10*HZ;
while (time_before(jiffies, timeout) && (inb_status(dev->base_addr) & 7));
if (inb_status(dev->base_addr) & 7) {
pr_err("%s: 3c505 failed to start\n", dev->name);
} else {
okay = 1;
}
} else {
pr_cont("3c505 is sulking\n");
}
}
for (tries = 0; tries < 5 && okay; tries++) {
adapter->tx_pcb.command = CMD_STATION_ADDRESS;
adapter->tx_pcb.length = 0;
cookie = probe_irq_on();
if (!send_pcb(dev, &adapter->tx_pcb)) {
pr_err("%s: could not send first PCB\n", dev->name);
probe_irq_off(cookie);
continue;
}
if (!receive_pcb(dev, &adapter->rx_pcb)) {
pr_err("%s: could not read first PCB\n", dev->name);
probe_irq_off(cookie);
continue;
}
if ((adapter->rx_pcb.command != CMD_ADDRESS_RESPONSE) ||
(adapter->rx_pcb.length != 6)) {
pr_err("%s: first PCB wrong (%d, %d)\n", dev->name,
adapter->rx_pcb.command, adapter->rx_pcb.length);
probe_irq_off(cookie);
continue;
}
goto okay;
}
pr_info("%s: resetting adapter\n", dev->name);
outb_control(adapter->hcr_val | FLSH | ATTN, dev);
outb_control(adapter->hcr_val & ~(FLSH | ATTN), dev);
}
pr_err("%s: failed to initialise 3c505\n", dev->name);
goto out;
okay:
if (dev->irq) {
int rpt = probe_irq_off(cookie);
if (dev->irq != rpt) {
pr_warning("%s: warning, irq %d configured but %d detected\n", dev->name, dev->irq, rpt);
}
} else
dev->irq = probe_irq_off(cookie);
switch (dev->irq) {
case 0:
pr_err("%s: IRQ probe failed: check 3c505 jumpers.\n",
dev->name);
goto out;
case 1:
case 6:
case 8:
case 13:
pr_err("%s: Impossible IRQ %d reported by probe_irq_off().\n",
dev->name, dev->irq);
goto out;
}
outb_control(adapter->hcr_val & ~CMDE, dev);
for (i = 0; i < 6; i++)
dev->dev_addr[i] = adapter->rx_pcb.data.eth_addr[i];
if (!dev->dma) {
if (dev->mem_start) {
dev->dma = dev->mem_start & 7;
}
else {
pr_warning("%s: warning, DMA channel not specified, using default\n", dev->name);
dev->dma = ELP_DMA;
}
}
pr_info("%s: 3c505 at %#lx, irq %d, dma %d, addr %pM, ",
dev->name, dev->base_addr, dev->irq, dev->dma, dev->dev_addr);
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)) {
pr_cont("not responding to second PCB\n");
}
pr_cont("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);
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)) {
pr_err("%s: could not configure adapter memory\n", dev->name);
}
if (adapter->rx_pcb.data.configure) {
pr_err("%s: adapter configuration failed\n", dev->name);
}
dev->netdev_ops = &elp_netdev_ops;
dev->watchdog_timeo = 10*HZ;
dev->ethtool_ops = &netdev_ethtool_ops;
dev->mem_start = dev->mem_end = 0;
err = register_netdev(dev);
if (err)
goto out;
return 0;
out:
release_region(dev->base_addr, ELP_IO_EXTENT);
return err;
}
#ifndef MODULE
struct net_device * __init elplus_probe(int unit)
{
struct net_device *dev = alloc_etherdev(sizeof(elp_device));
int err;
if (!dev)
return ERR_PTR(-ENOMEM);
sprintf(dev->name, "eth%d", unit);
netdev_boot_setup_check(dev);
err = elplus_setup(dev);
if (err) {
free_netdev(dev);
return ERR_PTR(err);
}
return dev;
}
#else
static struct net_device *dev_3c505[ELP_MAX_CARDS];
static int io[ELP_MAX_CARDS];
static int irq[ELP_MAX_CARDS];
static int dma[ELP_MAX_CARDS];
module_param_array(io, int, NULL, 0);
module_param_array(irq, int, NULL, 0);
module_param_array(dma, int, NULL, 0);
MODULE_PARM_DESC(io, "EtherLink Plus I/O base address(es)");
MODULE_PARM_DESC(irq, "EtherLink Plus IRQ number(s) (assigned)");
MODULE_PARM_DESC(dma, "EtherLink Plus DMA channel(s)");
int __init init_module(void)
{
int this_dev, found = 0;
for (this_dev = 0; this_dev < ELP_MAX_CARDS; this_dev++) {
struct net_device *dev = alloc_etherdev(sizeof(elp_device));
if (!dev)
break;
dev->irq = irq[this_dev];
dev->base_addr = io[this_dev];
if (dma[this_dev]) {
dev->dma = dma[this_dev];
} else {
dev->dma = ELP_DMA;
pr_warning("3c505.c: warning, using default DMA channel,\n");
}
if (io[this_dev] == 0) {
if (this_dev) {
free_netdev(dev);
break;
}
pr_notice("3c505.c: module autoprobe not recommended, give io=xx.\n");
}
if (elplus_setup(dev) != 0) {
pr_warning("3c505.c: Failed to register card at 0x%x.\n", io[this_dev]);
free_netdev(dev);
break;
}
dev_3c505[this_dev] = dev;
found++;
}
if (!found)
return -ENODEV;
return 0;
}
void __exit cleanup_module(void)
{
int this_dev;
for (this_dev = 0; this_dev < ELP_MAX_CARDS; this_dev++) {
struct net_device *dev = dev_3c505[this_dev];
if (dev) {
unregister_netdev(dev);
release_region(dev->base_addr, ELP_IO_EXTENT);
free_netdev(dev);
}
}
}
#endif
MODULE_LICENSE("GPL");
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