inline static void adapter_reset(struct net_device *dev)
{
int timeout;
elp_device *adapter = dev->priv;
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);
timeout = jiffies + 1*HZ/100;
while (time_before_eq(jiffies, timeout));
outb_control(adapter->hcr_val & ~ATTN, dev);
timeout = jiffies + 1*HZ/100;
while (time_before_eq(jiffies, timeout));
outb_control(adapter->hcr_val | FLSH, dev);
timeout = jiffies + 1*HZ/100;
while (time_before_eq(jiffies, timeout));
outb_control(adapter->hcr_val & ~FLSH, dev);
timeout = jiffies + 1*HZ/100;
while (time_before_eq(jiffies, timeout));
outb_control(orig_hcr, dev);
if (!start_receive(dev, &adapter->tx_pcb))
printk("%s: start receive command failed \n", dev->name);
}
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 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)
printk(search_msg, name, addr);
if (orig_HSR == 0xff) {
if (elp_debug > 0)
printk(notfound_msg, 1);
goto out;
}
/* Wait for a while; the adapter may still be booting up */
if (elp_debug > 0)
printk(stilllooking_msg);
if (orig_HSR & DIR) {
/* If HCR.DIR is up, we pull it down. HSR.DIR should follow. */
outb(0, dev->base_addr + PORT_CONTROL);
msleep(300);
if (inb_status(addr) & DIR) {
if (elp_debug > 0)
printk(notfound_msg, 2);
goto out;
}
} else {
/* If HCR.DIR is down, we pull it up. HSR.DIR should follow. */
outb(DIR, dev->base_addr + PORT_CONTROL);
msleep(300);
if (!(inb_status(addr) & DIR)) {
if (elp_debug > 0)
printk(notfound_msg, 3);
goto out;
}
}
/*
* It certainly looks like a 3c505.
*/
if (elp_debug > 0)
printk(found_msg);
return 0;
out:
release_region(addr, ELP_IO_EXTENT);
return -ENODEV;
}
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 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(KERN_WARNING "3c505: send_pcb_fast timed out\n");
return TRUE;
}
/* Primitive functions used by send_pcb() */
static inline unsigned int 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;
}
printk(KERN_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;
}
/* Primitive functions used by send_pcb() */
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 void elp_timeout(struct net_device *dev)
{
elp_device *adapter = dev->priv;
int stat;
stat = inb_status(dev->base_addr);
printk(KERN_WARNING "%s: transmit timed out, lost %s?\n", dev->name, (stat & ACRF) ? "interrupt" : "command");
if (elp_debug >= 1)
printk(KERN_DEBUG "%s: status %#02x\n", dev->name, stat);
dev->trans_start = jiffies;
adapter->stats.tx_dropped++;
netif_wake_queue(dev);
}
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; /* prevent tx timeout */
dev->stats.tx_dropped++;
netif_wake_queue(dev);
}
static irqreturn_t elp_interrupt(int irq, void *dev_id)
{
int len;
int dlen;
int icount = 0;
struct net_device *dev;
elp_device *adapter;
unsigned long timeout;
dev = dev_id;
adapter = (elp_device *) dev->priv;
spin_lock(&adapter->lock);
do {
/*
* has a DMA transfer finished?
*/
if (inb_status(dev->base_addr) & DONE) {
if (!adapter->dmaing) {
printk(KERN_WARNING "%s: phantom DMA completed\n", dev->name);
}
if (elp_debug >= 3) {
printk(KERN_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) {
/* have already done the skb_put() */
memcpy(adapter->current_dma.target, adapter->dma_buffer, adapter->current_dma.length);
}
skb->protocol = eth_type_trans(skb,dev);
adapter->stats.rx_bytes += skb->len;
netif_rx(skb);
dev->last_rx = jiffies;
}
}
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(KERN_DEBUG "%s: receiving backlogged packet (%d)\n", dev->name, t);
receive_packet(dev, t);
} else {
adapter->busy = 0;
}
} else {
/* has one timed out? */
check_3c505_dma(dev);
}
/*
* receive a PCB from the adapter
*/
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;
/*
* 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 (!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) {
printk(KERN_ERR "%s: interrupt - packet not received correctly\n", dev->name);
} else {
if (elp_debug >= 3) {
printk(KERN_DEBUG "%s: interrupt - packet received of length %i (%i)\n", dev->name, len, dlen);
}
if (adapter->irx_pcb.command == 0xff) {
if (elp_debug >= 2)
printk(KERN_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)
printk(KERN_DEBUG "%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(KERN_DEBUG "%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(KERN_DEBUG "%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(KERN_DEBUG "%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(KERN_DEBUG "%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(KERN_DEBUG "%s: interrupt - statistics response received\n", dev->name);
break;
/*
* sent a packet
*/
case CMD_TRANSMIT_PACKET_COMPLETE:
if (elp_debug >= 3)
printk(KERN_DEBUG "%s: interrupt - packet sent\n", dev->name);
if (!netif_running(dev))
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;
}
netif_wake_queue(dev);
break;
/*
* some unknown PCB
*/
default:
printk(KERN_DEBUG "%s: unknown PCB received - %2.2x\n", dev->name, adapter->irx_pcb.command);
break;
}
} else {
printk(KERN_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);
/*
* indicate no longer in interrupt routine
*/
spin_unlock(&adapter->lock);
return IRQ_HANDLED;
}
static int send_pcb(struct net_device *dev, pcb_struct * pcb)
{
int i;
unsigned long timeout;
elp_device *adapter = dev->priv;
unsigned long flags;
check_3c505_dma(dev);
if (adapter->dmaing && adapter->current_dma.direction == 0)
return FALSE;
/* Avoid contention */
if (test_and_set_bit(1, &adapter->send_pcb_semaphore)) {
if (elp_debug >= 3) {
printk(KERN_DEBUG "%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, 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); /* signal end of PCB */
outb_command(2 + pcb->length, dev->base_addr);
/* now wait for the acknowledgement */
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
printk(KERN_DEBUG "%s: send_pcb got NAK\n", dev->name);
#endif
goto abort;
}
}
if (elp_debug >= 1)
printk(KERN_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 int __init elplus_setup(struct net_device *dev)
{
elp_device *adapter = dev->priv;
int i, tries, tries1, okay;
unsigned long timeout;
unsigned long cookie = 0;
int err = -ENODEV;
SET_MODULE_OWNER(dev);
/*
* setup adapter structure
*/
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);
/* First try to write just one byte, to see if the card is
* responding at all normally.
*/
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); /* send a spurious byte */
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) {
/* Nope, it's ignoring the command register. This means that
* either it's still booting up, or it's died.
*/
printk(KERN_ERR "%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 (time_before(jiffies, timeout) && (inb_status(dev->base_addr) & 7));
if (inb_status(dev->base_addr) & 7) {
printk(KERN_ERR "%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;
cookie = probe_irq_on();
if (!send_pcb(dev, &adapter->tx_pcb)) {
printk(KERN_ERR "%s: could not send first PCB\n", dev->name);
probe_irq_off(cookie);
continue;
}
if (!receive_pcb(dev, &adapter->rx_pcb)) {
printk(KERN_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)) {
printk(KERN_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;
}
/* 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(adapter->hcr_val | FLSH | ATTN, dev);
outb_control(adapter->hcr_val & ~(FLSH | ATTN), dev);
}
printk(KERN_ERR "%s: failed to initialise 3c505\n", dev->name);
goto out;
okay:
if (dev->irq) { /* Is there a preset IRQ? */
int rpt = probe_irq_off(cookie);
if (dev->irq != rpt) {
printk(KERN_WARNING "%s: warning, irq %d configured but %d detected\n", dev->name, dev->irq, rpt);
}
/* if dev->irq == probe_irq_off(cookie), all is well */
} else /* No preset IRQ; just use what we can detect */
dev->irq = probe_irq_off(cookie);
switch (dev->irq) { /* Legal, sane? */
case 0:
printk(KERN_ERR "%s: IRQ probe failed: check 3c505 jumpers.\n",
dev->name);
goto out;
case 1:
case 6:
case 8:
case 13:
printk(KERN_ERR "%s: Impossible IRQ %d reported by probe_irq_off().\n",
dev->name, dev->irq);
goto out;
}
/*
* Now we have the IRQ number so we can disable the interrupts from
* the board until the board is opened.
*/
outb_control(adapter->hcr_val & ~CMDE, dev);
/*
* copy Ethernet address into structure
*/
for (i = 0; i < 6; i++)
dev->dev_addr[i] = adapter->rx_pcb.data.eth_addr[i];
/* find a DMA channel */
if (!dev->dma) {
if (dev->mem_start) {
dev->dma = dev->mem_start & 7;
}
else {
printk(KERN_WARNING "%s: warning, DMA channel not specified, using default\n", dev->name);
dev->dma = ELP_DMA;
}
}
/*
* print remainder of startup message
*/
printk(KERN_INFO "%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("not responding to second PCB\n");
}
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(KERN_ERR "%s: could not configure adapter memory\n", dev->name);
}
if (adapter->rx_pcb.data.configure) {
printk(KERN_ERR "%s: adapter configuration failed\n", dev->name);
}
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->tx_timeout = elp_timeout; /* local */
dev->watchdog_timeo = 10*HZ;
dev->set_multicast_list = elp_set_mc_list; /* local */
dev->ethtool_ops = &netdev_ethtool_ops; /* local */
memset(&(adapter->stats), 0, sizeof(struct net_device_stats));
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;
}
static int __init elp_sense(struct net_device *dev)
{
int timeout;
int addr = dev->base_addr;
const char *name = dev->name;
unsigned long flags;
byte orig_HSR;
if (!request_region(addr, ELP_IO_EXTENT, "3c505"))
return -ENODEV;
orig_HSR = inb_status(addr);
if (elp_debug > 0)
printk(search_msg, name, addr);
if (orig_HSR == 0xff) {
if (elp_debug > 0)
printk(notfound_msg, 1);
goto out;
}
/* 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_HSR & DIR) {
/* If HCR.DIR is up, we pull it down. HSR.DIR should follow. */
outb(0, dev->base_addr + PORT_CONTROL);
timeout = jiffies + 30*HZ/100;
while (time_before(jiffies, timeout));
restore_flags(flags);
if (inb_status(addr) & DIR) {
if (elp_debug > 0)
printk(notfound_msg, 2);
goto out;
}
} else {
/* If HCR.DIR is down, we pull it up. HSR.DIR should follow. */
outb(DIR, dev->base_addr + PORT_CONTROL);
timeout = jiffies + 30*HZ/100;
while (time_before(jiffies, timeout));
restore_flags(flags);
if (!(inb_status(addr) & DIR)) {
if (elp_debug > 0)
printk(notfound_msg, 3);
goto out;
}
}
/*
* It certainly looks like a 3c505.
*/
if (elp_debug > 0)
printk(found_msg);
return 0;
out:
release_region(addr, ELP_IO_EXTENT);
return -ENODEV;
}
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 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;
}
