2 * Linux Ethernet device driver for the 3Com Etherlink Plus (3C505)
3 * By Craig Southeren, Juha Laiho and Philip Blundell
5 * 3c505.c This module implements an interface to the 3Com
6 * Etherlink Plus (3c505) Ethernet card. Linux device
7 * driver interface reverse engineered from the Linux 3C509
8 * device drivers. Some 3C505 information gleaned from
9 * the Crynwr packet driver. Still this driver would not
10 * be here without 3C505 technical reference provided by
13 * $Id: 3c505.c,v 1.10 1996/04/16 13:06:27 phil Exp $
15 * Authors: Linux 3c505 device driver by
16 * Craig Southeren, <craigs@ineluki.apana.org.au>
18 * Andrew Tridgell, <tridge@nimbus.anu.edu.au>
19 * Auto irq/address, tuning, cleanup and v1.1.4+ kernel mods by
20 * Juha Laiho, <jlaiho@ichaos.nullnet.fi>
21 * Linux 3C509 driver by
22 * Donald Becker, <becker@super.org>
23 * (Now at <becker@scyld.com>)
24 * Crynwr packet driver by
25 * Krishnan Gopalan and Gregg Stefancik,
26 * Clemson University Engineering Computer Operations.
27 * Portions of the code have been adapted from the 3c505
28 * driver for NCSA Telnet by Bruce Orchard and later
29 * modified by Warren Van Houten and krus@diku.dk.
30 * 3C505 technical information provided by
31 * Terry Murphy, of 3Com Network Adapter Division
32 * Linux 1.3.0 changes by
33 * Alan Cox <Alan.Cox@linux.org>
34 * More debugging, DMA support, currently maintained by
35 * Philip Blundell <philb@gnu.org>
36 * Multicard/soft configurable dma channel/rev 2 hardware support
37 * by Christopher Collins <ccollins@pcug.org.au>
38 * Ethtool support (jgarzik), 11/17/2001
41 #define DRV_NAME "3c505"
42 #define DRV_VERSION "1.10a"
45 /* Theory of operation:
47 * The 3c505 is quite an intelligent board. All communication with it is done
48 * by means of Primary Command Blocks (PCBs); these are transferred using PIO
49 * through the command register. The card has 256k of on-board RAM, which is
50 * used to buffer received packets. It might seem at first that more buffers
51 * are better, but in fact this isn't true. From my tests, it seems that
52 * more than about 10 buffers are unnecessary, and there is a noticeable
53 * performance hit in having more active on the card. So the majority of the
54 * card's memory isn't, in fact, used. Sadly, the card only has one transmit
55 * buffer and, short of loading our own firmware into it (which is what some
56 * drivers resort to) there's nothing we can do about this.
58 * We keep up to 4 "receive packet" commands active on the board at a time.
59 * When a packet comes in, so long as there is a receive command active, the
60 * board will send us a "packet received" PCB and then add the data for that
61 * packet to the DMA queue. If a DMA transfer is not already in progress, we
62 * set one up to start uploading the data. We have to maintain a list of
63 * backlogged receive packets, because the card may decide to tell us about
64 * a newly-arrived packet at any time, and we may not be able to start a DMA
65 * transfer immediately (ie one may already be going on). We can't NAK the
66 * PCB, because then it would throw the packet away.
68 * Trying to send a PCB to the card at the wrong moment seems to have bad
69 * effects. If we send it a transmit PCB while a receive DMA is happening,
70 * it will just NAK the PCB and so we will have wasted our time. Worse, it
71 * sometimes seems to interrupt the transfer. The majority of the low-level
72 * code is protected by one huge semaphore -- "busy" -- which is set whenever
73 * it probably isn't safe to do anything to the card. The receive routine
74 * must gain a lock on "busy" before it can start a DMA transfer, and the
75 * transmit routine must gain a lock before it sends the first PCB to the card.
76 * The send_pcb() routine also has an internal semaphore to protect it against
77 * being re-entered (which would be disastrous) -- this is needed because
78 * several things can happen asynchronously (re-priming the receiver and
79 * asking the card for statistics, for example). send_pcb() will also refuse
80 * to talk to the card at all if a DMA upload is happening. The higher-level
81 * networking code will reschedule a later retry if some part of the driver
82 * is blocked. In practice, this doesn't seem to happen very often.
85 /* This driver may now work with revision 2.x hardware, since all the read
86 * operations on the HCR have been removed (we now keep our own softcopy).
87 * But I don't have an old card to test it on.
89 * This has had the bad effect that the autoprobe routine is now a bit
90 * less friendly to other devices. However, it was never very good.
91 * before, so I doubt it will hurt anybody.
94 /* The driver is a mess. I took Craig's and Juha's code, and hacked it firstly
95 * to make it more reliable, and secondly to add DMA mode. Many things could
96 * probably be done better; the concurrency protection is particularly awful.
99 #include <linux/module.h>
100 #include <linux/kernel.h>
101 #include <linux/string.h>
102 #include <linux/interrupt.h>
103 #include <linux/errno.h>
104 #include <linux/in.h>
105 #include <linux/slab.h>
106 #include <linux/ioport.h>
107 #include <linux/spinlock.h>
108 #include <linux/ethtool.h>
109 #include <linux/delay.h>
110 #include <linux/bitops.h>
112 #include <asm/uaccess.h>
116 #include <linux/netdevice.h>
117 #include <linux/etherdevice.h>
118 #include <linux/skbuff.h>
119 #include <linux/init.h>
123 /*********************************************************
125 * define debug messages here as common strings to reduce space
127 *********************************************************/
129 static const char filename[] = __FILE__;
131 static const char timeout_msg[] = "*** timeout at %s:%s (line %d) ***\n";
132 #define TIMEOUT_MSG(lineno) \
133 printk(timeout_msg, filename,__func__,(lineno))
135 static const char invalid_pcb_msg[] =
136 "*** invalid pcb length %d at %s:%s (line %d) ***\n";
137 #define INVALID_PCB_MSG(len) \
138 printk(invalid_pcb_msg, (len),filename,__func__,__LINE__)
140 static char search_msg[] __initdata = KERN_INFO "%s: Looking for 3c505 adapter at address %#x...";
142 static char stilllooking_msg[] __initdata = "still looking...";
144 static char found_msg[] __initdata = "found.\n";
146 static char notfound_msg[] __initdata = "not found (reason = %d)\n";
148 static char couldnot_msg[] __initdata = KERN_INFO "%s: 3c505 not found\n";
150 /*********************************************************
152 * various other debug stuff
154 *********************************************************/
157 static int elp_debug = ELP_DEBUG;
159 static int elp_debug;
161 #define debug elp_debug
164 * 0 = no messages (well, some)
165 * 1 = messages when high level commands performed
166 * 2 = messages when low level commands performed
167 * 3 = messages when interrupts received
170 /*****************************************************************
172 * List of I/O-addresses we try to auto-sense
173 * Last element MUST BE 0!
174 *****************************************************************/
176 static int addr_list[] __initdata = {0x300, 0x280, 0x310, 0};
178 /* Dma Memory related stuff */
180 static unsigned long dma_mem_alloc(int size)
182 int order = get_order(size);
183 return __get_dma_pages(GFP_KERNEL, order);
187 /*****************************************************************
189 * Functions for I/O (note the inline !)
191 *****************************************************************/
193 static inline unsigned char inb_status(unsigned int base_addr)
195 return inb(base_addr + PORT_STATUS);
198 static inline int inb_command(unsigned int base_addr)
200 return inb(base_addr + PORT_COMMAND);
203 static inline void outb_control(unsigned char val, struct net_device *dev)
205 outb(val, dev->base_addr + PORT_CONTROL);
206 ((elp_device *)(netdev_priv(dev)))->hcr_val = val;
209 #define HCR_VAL(x) (((elp_device *)(netdev_priv(x)))->hcr_val)
211 static inline void outb_command(unsigned char val, unsigned int base_addr)
213 outb(val, base_addr + PORT_COMMAND);
216 static inline unsigned int backlog_next(unsigned int n)
218 return (n + 1) % BACKLOG_SIZE;
221 /*****************************************************************
223 * useful functions for accessing the adapter
225 *****************************************************************/
228 * use this routine when accessing the ASF bits as they are
229 * changed asynchronously by the adapter
232 /* get adapter PCB status */
233 #define GET_ASF(addr) \
234 (get_status(addr)&ASF_PCB_MASK)
236 static inline int get_status(unsigned int base_addr)
238 unsigned long timeout = jiffies + 10*HZ/100;
241 stat1 = inb_status(base_addr);
242 } while (stat1 != inb_status(base_addr) && time_before(jiffies, timeout));
243 if (time_after_eq(jiffies, timeout))
244 TIMEOUT_MSG(__LINE__);
248 static inline void set_hsf(struct net_device *dev, int hsf)
250 elp_device *adapter = netdev_priv(dev);
253 spin_lock_irqsave(&adapter->lock, flags);
254 outb_control((HCR_VAL(dev) & ~HSF_PCB_MASK) | hsf, dev);
255 spin_unlock_irqrestore(&adapter->lock, flags);
258 static bool start_receive(struct net_device *, pcb_struct *);
260 static inline void adapter_reset(struct net_device *dev)
262 unsigned long timeout;
263 elp_device *adapter = netdev_priv(dev);
264 unsigned char orig_hcr = adapter->hcr_val;
266 outb_control(0, dev);
268 if (inb_status(dev->base_addr) & ACRF) {
270 inb_command(dev->base_addr);
271 timeout = jiffies + 2*HZ/100;
272 while (time_before_eq(jiffies, timeout) && !(inb_status(dev->base_addr) & ACRF));
273 } while (inb_status(dev->base_addr) & ACRF);
274 set_hsf(dev, HSF_PCB_NAK);
276 outb_control(adapter->hcr_val | ATTN | DIR, dev);
278 outb_control(adapter->hcr_val & ~ATTN, dev);
280 outb_control(adapter->hcr_val | FLSH, dev);
282 outb_control(adapter->hcr_val & ~FLSH, dev);
285 outb_control(orig_hcr, dev);
286 if (!start_receive(dev, &adapter->tx_pcb))
287 printk(KERN_ERR "%s: start receive command failed \n", dev->name);
290 /* Check to make sure that a DMA transfer hasn't timed out. This should
291 * never happen in theory, but seems to occur occasionally if the card gets
292 * prodded at the wrong time.
294 static inline void check_3c505_dma(struct net_device *dev)
296 elp_device *adapter = netdev_priv(dev);
297 if (adapter->dmaing && time_after(jiffies, adapter->current_dma.start_time + 10)) {
298 unsigned long flags, f;
299 printk(KERN_ERR "%s: DMA %s timed out, %d bytes left\n", dev->name, adapter->current_dma.direction ? "download" : "upload", get_dma_residue(dev->dma));
300 spin_lock_irqsave(&adapter->lock, flags);
305 disable_dma(dev->dma);
308 if (adapter->rx_active)
309 adapter->rx_active--;
310 outb_control(adapter->hcr_val & ~(DMAE | TCEN | DIR), dev);
311 spin_unlock_irqrestore(&adapter->lock, flags);
315 /* Primitive functions used by send_pcb() */
316 static inline bool send_pcb_slow(unsigned int base_addr, unsigned char byte)
318 unsigned long timeout;
319 outb_command(byte, base_addr);
320 for (timeout = jiffies + 5*HZ/100; time_before(jiffies, timeout);) {
321 if (inb_status(base_addr) & HCRE)
324 printk(KERN_WARNING "3c505: send_pcb_slow timed out\n");
328 static inline bool send_pcb_fast(unsigned int base_addr, unsigned char byte)
330 unsigned int timeout;
331 outb_command(byte, base_addr);
332 for (timeout = 0; timeout < 40000; timeout++) {
333 if (inb_status(base_addr) & HCRE)
336 printk(KERN_WARNING "3c505: send_pcb_fast timed out\n");
340 /* Check to see if the receiver needs restarting, and kick it if so */
341 static inline void prime_rx(struct net_device *dev)
343 elp_device *adapter = netdev_priv(dev);
344 while (adapter->rx_active < ELP_RX_PCBS && netif_running(dev)) {
345 if (!start_receive(dev, &adapter->itx_pcb))
350 /*****************************************************************
353 * Send a PCB to the adapter.
355 * output byte to command reg --<--+
356 * wait until HCRE is non zero |
357 * loop until all bytes sent -->--+
358 * set HSF1 and HSF2 to 1
360 * wait until ASF give ACK or NAK
361 * set HSF1 and HSF2 to 0
363 *****************************************************************/
365 /* This can be quite slow -- the adapter is allowed to take up to 40ms
366 * to respond to the initial interrupt.
368 * We run initially with interrupts turned on, but with a semaphore set
369 * so that nobody tries to re-enter this code. Once the first byte has
370 * gone through, we turn interrupts off and then send the others (the
371 * timeout is reduced to 500us).
374 static bool send_pcb(struct net_device *dev, pcb_struct * pcb)
377 unsigned long timeout;
378 elp_device *adapter = netdev_priv(dev);
381 check_3c505_dma(dev);
383 if (adapter->dmaing && adapter->current_dma.direction == 0)
386 /* Avoid contention */
387 if (test_and_set_bit(1, &adapter->send_pcb_semaphore)) {
388 if (elp_debug >= 3) {
389 printk(KERN_DEBUG "%s: send_pcb entered while threaded\n", dev->name);
394 * load each byte into the command register and
395 * wait for the HCRE bit to indicate the adapter
400 if (send_pcb_slow(dev->base_addr, pcb->command))
403 spin_lock_irqsave(&adapter->lock, flags);
405 if (send_pcb_fast(dev->base_addr, pcb->length))
408 for (i = 0; i < pcb->length; i++) {
409 if (send_pcb_fast(dev->base_addr, pcb->data.raw[i]))
413 outb_control(adapter->hcr_val | 3, dev); /* signal end of PCB */
414 outb_command(2 + pcb->length, dev->base_addr);
416 /* now wait for the acknowledgement */
417 spin_unlock_irqrestore(&adapter->lock, flags);
419 for (timeout = jiffies + 5*HZ/100; time_before(jiffies, timeout);) {
420 switch (GET_ASF(dev->base_addr)) {
422 adapter->send_pcb_semaphore = 0;
427 printk(KERN_DEBUG "%s: send_pcb got NAK\n", dev->name);
434 printk(KERN_DEBUG "%s: timeout waiting for PCB acknowledge (status %02x)\n", dev->name, inb_status(dev->base_addr));
438 spin_unlock_irqrestore(&adapter->lock, flags);
440 adapter->send_pcb_semaphore = 0;
445 /*****************************************************************
448 * Read a PCB from the adapter
450 * wait for ACRF to be non-zero ---<---+
452 * if ASF1 and ASF2 were not both one |
453 * before byte was read, loop --->---+
454 * set HSF1 and HSF2 for ack
456 *****************************************************************/
458 static bool receive_pcb(struct net_device *dev, pcb_struct * pcb)
463 unsigned long timeout;
466 elp_device *adapter = netdev_priv(dev);
470 /* get the command code */
471 timeout = jiffies + 2*HZ/100;
472 while (((stat = get_status(dev->base_addr)) & ACRF) == 0 && time_before(jiffies, timeout));
473 if (time_after_eq(jiffies, timeout)) {
474 TIMEOUT_MSG(__LINE__);
477 pcb->command = inb_command(dev->base_addr);
479 /* read the data length */
480 timeout = jiffies + 3*HZ/100;
481 while (((stat = get_status(dev->base_addr)) & ACRF) == 0 && time_before(jiffies, timeout));
482 if (time_after_eq(jiffies, timeout)) {
483 TIMEOUT_MSG(__LINE__);
484 printk(KERN_INFO "%s: status %02x\n", dev->name, stat);
487 pcb->length = inb_command(dev->base_addr);
489 if (pcb->length > MAX_PCB_DATA) {
490 INVALID_PCB_MSG(pcb->length);
495 spin_lock_irqsave(&adapter->lock, flags);
496 for (i = 0; i < MAX_PCB_DATA; i++) {
497 for (j = 0; j < 20000; j++) {
498 stat = get_status(dev->base_addr);
502 pcb->data.raw[i] = inb_command(dev->base_addr);
503 if ((stat & ASF_PCB_MASK) == ASF_PCB_END || j >= 20000)
506 spin_unlock_irqrestore(&adapter->lock, flags);
507 if (i >= MAX_PCB_DATA) {
512 TIMEOUT_MSG(__LINE__);
515 /* the last "data" byte was really the length! */
516 total_length = pcb->data.raw[i];
518 /* safety check total length vs data length */
519 if (total_length != (pcb->length + 2)) {
521 printk(KERN_WARNING "%s: mangled PCB received\n", dev->name);
522 set_hsf(dev, HSF_PCB_NAK);
526 if (pcb->command == CMD_RECEIVE_PACKET_COMPLETE) {
527 if (test_and_set_bit(0, (void *) &adapter->busy)) {
528 if (backlog_next(adapter->rx_backlog.in) == adapter->rx_backlog.out) {
529 set_hsf(dev, HSF_PCB_NAK);
530 printk(KERN_WARNING "%s: PCB rejected, transfer in progress and backlog full\n", dev->name);
538 set_hsf(dev, HSF_PCB_ACK);
542 /******************************************************
544 * queue a receive command on the adapter so we will get an
545 * interrupt when a packet is received.
547 ******************************************************/
549 static bool start_receive(struct net_device *dev, pcb_struct * tx_pcb)
552 elp_device *adapter = netdev_priv(dev);
555 printk(KERN_DEBUG "%s: restarting receiver\n", dev->name);
556 tx_pcb->command = CMD_RECEIVE_PACKET;
557 tx_pcb->length = sizeof(struct Rcv_pkt);
558 tx_pcb->data.rcv_pkt.buf_seg
559 = tx_pcb->data.rcv_pkt.buf_ofs = 0; /* Unused */
560 tx_pcb->data.rcv_pkt.buf_len = 1600;
561 tx_pcb->data.rcv_pkt.timeout = 0; /* set timeout to zero */
562 status = send_pcb(dev, tx_pcb);
564 adapter->rx_active++;
568 /******************************************************
570 * extract a packet from the adapter
571 * this routine is only called from within the interrupt
572 * service routine, so no cli/sti calls are needed
573 * note that the length is always assumed to be even
575 ******************************************************/
577 static void receive_packet(struct net_device *dev, int len)
580 elp_device *adapter = netdev_priv(dev);
585 rlen = (len + 1) & ~1;
586 skb = dev_alloc_skb(rlen + 2);
589 printk(KERN_WARNING "%s: memory squeeze, dropping packet\n", dev->name);
590 target = adapter->dma_buffer;
591 adapter->current_dma.target = NULL;
597 target = skb_put(skb, rlen);
598 if ((unsigned long)(target + rlen) >= MAX_DMA_ADDRESS) {
599 adapter->current_dma.target = target;
600 target = adapter->dma_buffer;
602 adapter->current_dma.target = NULL;
605 /* if this happens, we die */
606 if (test_and_set_bit(0, (void *) &adapter->dmaing))
607 printk(KERN_ERR "%s: rx blocked, DMA in progress, dir %d\n", dev->name, adapter->current_dma.direction);
609 adapter->current_dma.direction = 0;
610 adapter->current_dma.length = rlen;
611 adapter->current_dma.skb = skb;
612 adapter->current_dma.start_time = jiffies;
614 outb_control(adapter->hcr_val | DIR | TCEN | DMAE, dev);
616 flags=claim_dma_lock();
617 disable_dma(dev->dma);
618 clear_dma_ff(dev->dma);
619 set_dma_mode(dev->dma, 0x04); /* dma read */
620 set_dma_addr(dev->dma, isa_virt_to_bus(target));
621 set_dma_count(dev->dma, rlen);
622 enable_dma(dev->dma);
623 release_dma_lock(flags);
625 if (elp_debug >= 3) {
626 printk(KERN_DEBUG "%s: rx DMA transfer started\n", dev->name);
629 if (adapter->rx_active)
630 adapter->rx_active--;
633 printk(KERN_WARNING "%s: receive_packet called, busy not set.\n", dev->name);
636 /******************************************************
640 ******************************************************/
642 static irqreturn_t elp_interrupt(int irq, void *dev_id)
647 struct net_device *dev = dev_id;
648 elp_device *adapter = netdev_priv(dev);
649 unsigned long timeout;
651 spin_lock(&adapter->lock);
655 * has a DMA transfer finished?
657 if (inb_status(dev->base_addr) & DONE) {
658 if (!adapter->dmaing) {
659 printk(KERN_WARNING "%s: phantom DMA completed\n", dev->name);
661 if (elp_debug >= 3) {
662 printk(KERN_DEBUG "%s: %s DMA complete, status %02x\n", dev->name, adapter->current_dma.direction ? "tx" : "rx", inb_status(dev->base_addr));
665 outb_control(adapter->hcr_val & ~(DMAE | TCEN | DIR), dev);
666 if (adapter->current_dma.direction) {
667 dev_kfree_skb_irq(adapter->current_dma.skb);
669 struct sk_buff *skb = adapter->current_dma.skb;
671 if (adapter->current_dma.target) {
672 /* have already done the skb_put() */
673 memcpy(adapter->current_dma.target, adapter->dma_buffer, adapter->current_dma.length);
675 skb->protocol = eth_type_trans(skb,dev);
676 dev->stats.rx_bytes += skb->len;
681 if (adapter->rx_backlog.in != adapter->rx_backlog.out) {
682 int t = adapter->rx_backlog.length[adapter->rx_backlog.out];
683 adapter->rx_backlog.out = backlog_next(adapter->rx_backlog.out);
685 printk(KERN_DEBUG "%s: receiving backlogged packet (%d)\n", dev->name, t);
686 receive_packet(dev, t);
691 /* has one timed out? */
692 check_3c505_dma(dev);
696 * receive a PCB from the adapter
698 timeout = jiffies + 3*HZ/100;
699 while ((inb_status(dev->base_addr) & ACRF) != 0 && time_before(jiffies, timeout)) {
700 if (receive_pcb(dev, &adapter->irx_pcb)) {
701 switch (adapter->irx_pcb.command)
706 * received a packet - this must be handled fast
709 case CMD_RECEIVE_PACKET_COMPLETE:
710 /* if the device isn't open, don't pass packets up the stack */
711 if (!netif_running(dev))
713 len = adapter->irx_pcb.data.rcv_resp.pkt_len;
714 dlen = adapter->irx_pcb.data.rcv_resp.buf_len;
715 if (adapter->irx_pcb.data.rcv_resp.timeout != 0) {
716 printk(KERN_ERR "%s: interrupt - packet not received correctly\n", dev->name);
718 if (elp_debug >= 3) {
719 printk(KERN_DEBUG "%s: interrupt - packet received of length %i (%i)\n", dev->name, len, dlen);
721 if (adapter->irx_pcb.command == 0xff) {
723 printk(KERN_DEBUG "%s: adding packet to backlog (len = %d)\n", dev->name, dlen);
724 adapter->rx_backlog.length[adapter->rx_backlog.in] = dlen;
725 adapter->rx_backlog.in = backlog_next(adapter->rx_backlog.in);
727 receive_packet(dev, dlen);
730 printk(KERN_DEBUG "%s: packet received\n", dev->name);
735 * 82586 configured correctly
737 case CMD_CONFIGURE_82586_RESPONSE:
738 adapter->got[CMD_CONFIGURE_82586] = 1;
740 printk(KERN_DEBUG "%s: interrupt - configure response received\n", dev->name);
744 * Adapter memory configuration
746 case CMD_CONFIGURE_ADAPTER_RESPONSE:
747 adapter->got[CMD_CONFIGURE_ADAPTER_MEMORY] = 1;
749 printk(KERN_DEBUG "%s: Adapter memory configuration %s.\n", dev->name,
750 adapter->irx_pcb.data.failed ? "failed" : "succeeded");
754 * Multicast list loading
756 case CMD_LOAD_MULTICAST_RESPONSE:
757 adapter->got[CMD_LOAD_MULTICAST_LIST] = 1;
759 printk(KERN_DEBUG "%s: Multicast address list loading %s.\n", dev->name,
760 adapter->irx_pcb.data.failed ? "failed" : "succeeded");
764 * Station address setting
766 case CMD_SET_ADDRESS_RESPONSE:
767 adapter->got[CMD_SET_STATION_ADDRESS] = 1;
769 printk(KERN_DEBUG "%s: Ethernet address setting %s.\n", dev->name,
770 adapter->irx_pcb.data.failed ? "failed" : "succeeded");
775 * received board statistics
777 case CMD_NETWORK_STATISTICS_RESPONSE:
778 dev->stats.rx_packets += adapter->irx_pcb.data.netstat.tot_recv;
779 dev->stats.tx_packets += adapter->irx_pcb.data.netstat.tot_xmit;
780 dev->stats.rx_crc_errors += adapter->irx_pcb.data.netstat.err_CRC;
781 dev->stats.rx_frame_errors += adapter->irx_pcb.data.netstat.err_align;
782 dev->stats.rx_fifo_errors += adapter->irx_pcb.data.netstat.err_ovrrun;
783 dev->stats.rx_over_errors += adapter->irx_pcb.data.netstat.err_res;
784 adapter->got[CMD_NETWORK_STATISTICS] = 1;
786 printk(KERN_DEBUG "%s: interrupt - statistics response received\n", dev->name);
792 case CMD_TRANSMIT_PACKET_COMPLETE:
794 printk(KERN_DEBUG "%s: interrupt - packet sent\n", dev->name);
795 if (!netif_running(dev))
797 switch (adapter->irx_pcb.data.xmit_resp.c_stat) {
799 dev->stats.tx_aborted_errors++;
800 printk(KERN_INFO "%s: transmit timed out, network cable problem?\n", dev->name);
803 dev->stats.tx_fifo_errors++;
804 printk(KERN_INFO "%s: transmit timed out, FIFO underrun\n", dev->name);
807 netif_wake_queue(dev);
814 printk(KERN_DEBUG "%s: unknown PCB received - %2.2x\n", dev->name, adapter->irx_pcb.command);
818 printk(KERN_WARNING "%s: failed to read PCB on interrupt\n", dev->name);
823 } while (icount++ < 5 && (inb_status(dev->base_addr) & (ACRF | DONE)));
828 * indicate no longer in interrupt routine
830 spin_unlock(&adapter->lock);
835 /******************************************************
839 ******************************************************/
841 static int elp_open(struct net_device *dev)
843 elp_device *adapter = netdev_priv(dev);
847 printk(KERN_DEBUG "%s: request to open device\n", dev->name);
850 * make sure we actually found the device
852 if (adapter == NULL) {
853 printk(KERN_ERR "%s: Opening a non-existent physical device\n", dev->name);
857 * disable interrupts on the board
859 outb_control(0, dev);
862 * clear any pending interrupts
864 inb_command(dev->base_addr);
868 * no receive PCBs active
870 adapter->rx_active = 0;
873 adapter->send_pcb_semaphore = 0;
874 adapter->rx_backlog.in = 0;
875 adapter->rx_backlog.out = 0;
877 spin_lock_init(&adapter->lock);
880 * install our interrupt service routine
882 if ((retval = request_irq(dev->irq, &elp_interrupt, 0, dev->name, dev))) {
883 printk(KERN_ERR "%s: could not allocate IRQ%d\n", dev->name, dev->irq);
886 if ((retval = request_dma(dev->dma, dev->name))) {
887 free_irq(dev->irq, dev);
888 printk(KERN_ERR "%s: could not allocate DMA%d channel\n", dev->name, dev->dma);
891 adapter->dma_buffer = (void *) dma_mem_alloc(DMA_BUFFER_SIZE);
892 if (!adapter->dma_buffer) {
893 printk(KERN_ERR "%s: could not allocate DMA buffer\n", dev->name);
895 free_irq(dev->irq, dev);
901 * enable interrupts on the board
903 outb_control(CMDE, dev);
906 * configure adapter memory: we need 10 multicast addresses, default==0
909 printk(KERN_DEBUG "%s: sending 3c505 memory configuration command\n", dev->name);
910 adapter->tx_pcb.command = CMD_CONFIGURE_ADAPTER_MEMORY;
911 adapter->tx_pcb.data.memconf.cmd_q = 10;
912 adapter->tx_pcb.data.memconf.rcv_q = 20;
913 adapter->tx_pcb.data.memconf.mcast = 10;
914 adapter->tx_pcb.data.memconf.frame = 20;
915 adapter->tx_pcb.data.memconf.rcv_b = 20;
916 adapter->tx_pcb.data.memconf.progs = 0;
917 adapter->tx_pcb.length = sizeof(struct Memconf);
918 adapter->got[CMD_CONFIGURE_ADAPTER_MEMORY] = 0;
919 if (!send_pcb(dev, &adapter->tx_pcb))
920 printk(KERN_ERR "%s: couldn't send memory configuration command\n", dev->name);
922 unsigned long timeout = jiffies + TIMEOUT;
923 while (adapter->got[CMD_CONFIGURE_ADAPTER_MEMORY] == 0 && time_before(jiffies, timeout));
924 if (time_after_eq(jiffies, timeout))
925 TIMEOUT_MSG(__LINE__);
930 * configure adapter to receive broadcast messages and wait for response
933 printk(KERN_DEBUG "%s: sending 82586 configure command\n", dev->name);
934 adapter->tx_pcb.command = CMD_CONFIGURE_82586;
935 adapter->tx_pcb.data.configure = NO_LOOPBACK | RECV_BROAD;
936 adapter->tx_pcb.length = 2;
937 adapter->got[CMD_CONFIGURE_82586] = 0;
938 if (!send_pcb(dev, &adapter->tx_pcb))
939 printk(KERN_ERR "%s: couldn't send 82586 configure command\n", dev->name);
941 unsigned long timeout = jiffies + TIMEOUT;
942 while (adapter->got[CMD_CONFIGURE_82586] == 0 && time_before(jiffies, timeout));
943 if (time_after_eq(jiffies, timeout))
944 TIMEOUT_MSG(__LINE__);
947 /* enable burst-mode DMA */
948 /* outb(0x1, dev->base_addr + PORT_AUXDMA); */
951 * queue receive commands to provide buffering
955 printk(KERN_DEBUG "%s: %d receive PCBs active\n", dev->name, adapter->rx_active);
958 * device is now officially open!
961 netif_start_queue(dev);
966 /******************************************************
968 * send a packet to the adapter
970 ******************************************************/
972 static bool send_packet(struct net_device *dev, struct sk_buff *skb)
974 elp_device *adapter = netdev_priv(dev);
975 unsigned long target;
979 * make sure the length is even and no shorter than 60 bytes
981 unsigned int nlen = (((skb->len < 60) ? 60 : skb->len) + 1) & (~1);
983 if (test_and_set_bit(0, (void *) &adapter->busy)) {
985 printk(KERN_DEBUG "%s: transmit blocked\n", dev->name);
989 dev->stats.tx_bytes += nlen;
992 * send the adapter a transmit packet command. Ignore segment and offset
993 * and make sure the length is even
995 adapter->tx_pcb.command = CMD_TRANSMIT_PACKET;
996 adapter->tx_pcb.length = sizeof(struct Xmit_pkt);
997 adapter->tx_pcb.data.xmit_pkt.buf_ofs
998 = adapter->tx_pcb.data.xmit_pkt.buf_seg = 0; /* Unused */
999 adapter->tx_pcb.data.xmit_pkt.pkt_len = nlen;
1001 if (!send_pcb(dev, &adapter->tx_pcb)) {
1005 /* if this happens, we die */
1006 if (test_and_set_bit(0, (void *) &adapter->dmaing))
1007 printk(KERN_DEBUG "%s: tx: DMA %d in progress\n", dev->name, adapter->current_dma.direction);
1009 adapter->current_dma.direction = 1;
1010 adapter->current_dma.start_time = jiffies;
1012 if ((unsigned long)(skb->data + nlen) >= MAX_DMA_ADDRESS || nlen != skb->len) {
1013 skb_copy_from_linear_data(skb, adapter->dma_buffer, nlen);
1014 memset(adapter->dma_buffer+skb->len, 0, nlen-skb->len);
1015 target = isa_virt_to_bus(adapter->dma_buffer);
1018 target = isa_virt_to_bus(skb->data);
1020 adapter->current_dma.skb = skb;
1022 flags=claim_dma_lock();
1023 disable_dma(dev->dma);
1024 clear_dma_ff(dev->dma);
1025 set_dma_mode(dev->dma, 0x48); /* dma memory -> io */
1026 set_dma_addr(dev->dma, target);
1027 set_dma_count(dev->dma, nlen);
1028 outb_control(adapter->hcr_val | DMAE | TCEN, dev);
1029 enable_dma(dev->dma);
1030 release_dma_lock(flags);
1033 printk(KERN_DEBUG "%s: DMA transfer started\n", dev->name);
1039 * The upper layer thinks we timed out
1042 static void elp_timeout(struct net_device *dev)
1046 stat = inb_status(dev->base_addr);
1047 printk(KERN_WARNING "%s: transmit timed out, lost %s?\n", dev->name, (stat & ACRF) ? "interrupt" : "command");
1049 printk(KERN_DEBUG "%s: status %#02x\n", dev->name, stat);
1050 dev->trans_start = jiffies;
1051 dev->stats.tx_dropped++;
1052 netif_wake_queue(dev);
1055 /******************************************************
1057 * start the transmitter
1058 * return 0 if sent OK, else return 1
1060 ******************************************************/
1062 static int elp_start_xmit(struct sk_buff *skb, struct net_device *dev)
1064 unsigned long flags;
1065 elp_device *adapter = netdev_priv(dev);
1067 spin_lock_irqsave(&adapter->lock, flags);
1068 check_3c505_dma(dev);
1071 printk(KERN_DEBUG "%s: request to send packet of length %d\n", dev->name, (int) skb->len);
1073 netif_stop_queue(dev);
1076 * send the packet at skb->data for skb->len
1078 if (!send_packet(dev, skb)) {
1079 if (elp_debug >= 2) {
1080 printk(KERN_DEBUG "%s: failed to transmit packet\n", dev->name);
1082 spin_unlock_irqrestore(&adapter->lock, flags);
1086 printk(KERN_DEBUG "%s: packet of length %d sent\n", dev->name, (int) skb->len);
1089 * start the transmit timeout
1091 dev->trans_start = jiffies;
1094 spin_unlock_irqrestore(&adapter->lock, flags);
1095 netif_start_queue(dev);
1099 /******************************************************
1101 * return statistics on the board
1103 ******************************************************/
1105 static struct net_device_stats *elp_get_stats(struct net_device *dev)
1107 elp_device *adapter = netdev_priv(dev);
1110 printk(KERN_DEBUG "%s: request for stats\n", dev->name);
1112 /* If the device is closed, just return the latest stats we have,
1113 - we cannot ask from the adapter without interrupts */
1114 if (!netif_running(dev))
1117 /* send a get statistics command to the board */
1118 adapter->tx_pcb.command = CMD_NETWORK_STATISTICS;
1119 adapter->tx_pcb.length = 0;
1120 adapter->got[CMD_NETWORK_STATISTICS] = 0;
1121 if (!send_pcb(dev, &adapter->tx_pcb))
1122 printk(KERN_ERR "%s: couldn't send get statistics command\n", dev->name);
1124 unsigned long timeout = jiffies + TIMEOUT;
1125 while (adapter->got[CMD_NETWORK_STATISTICS] == 0 && time_before(jiffies, timeout));
1126 if (time_after_eq(jiffies, timeout)) {
1127 TIMEOUT_MSG(__LINE__);
1132 /* statistics are now up to date */
1137 static void netdev_get_drvinfo(struct net_device *dev,
1138 struct ethtool_drvinfo *info)
1140 strcpy(info->driver, DRV_NAME);
1141 strcpy(info->version, DRV_VERSION);
1142 sprintf(info->bus_info, "ISA 0x%lx", dev->base_addr);
1145 static u32 netdev_get_msglevel(struct net_device *dev)
1150 static void netdev_set_msglevel(struct net_device *dev, u32 level)
1155 static const struct ethtool_ops netdev_ethtool_ops = {
1156 .get_drvinfo = netdev_get_drvinfo,
1157 .get_msglevel = netdev_get_msglevel,
1158 .set_msglevel = netdev_set_msglevel,
1161 /******************************************************
1165 ******************************************************/
1167 static int elp_close(struct net_device *dev)
1169 elp_device *adapter = netdev_priv(dev);
1172 printk(KERN_DEBUG "%s: request to close device\n", dev->name);
1174 netif_stop_queue(dev);
1176 /* Someone may request the device statistic information even when
1177 * the interface is closed. The following will update the statistics
1178 * structure in the driver, so we'll be able to give current statistics.
1180 (void) elp_get_stats(dev);
1183 * disable interrupts on the board
1185 outb_control(0, dev);
1190 free_irq(dev->irq, dev);
1193 free_pages((unsigned long) adapter->dma_buffer, get_order(DMA_BUFFER_SIZE));
1199 /************************************************************
1201 * Set multicast list
1202 * num_addrs==0: clear mc_list
1203 * num_addrs==-1: set promiscuous mode
1204 * num_addrs>0: set mc_list
1206 ************************************************************/
1208 static void elp_set_mc_list(struct net_device *dev)
1210 elp_device *adapter = netdev_priv(dev);
1211 struct dev_mc_list *dmi = dev->mc_list;
1213 unsigned long flags;
1216 printk(KERN_DEBUG "%s: request to set multicast list\n", dev->name);
1218 spin_lock_irqsave(&adapter->lock, flags);
1220 if (!(dev->flags & (IFF_PROMISC | IFF_ALLMULTI))) {
1221 /* send a "load multicast list" command to the board, max 10 addrs/cmd */
1222 /* if num_addrs==0 the list will be cleared */
1223 adapter->tx_pcb.command = CMD_LOAD_MULTICAST_LIST;
1224 adapter->tx_pcb.length = 6 * dev->mc_count;
1225 for (i = 0; i < dev->mc_count; i++) {
1226 memcpy(adapter->tx_pcb.data.multicast[i], dmi->dmi_addr, 6);
1229 adapter->got[CMD_LOAD_MULTICAST_LIST] = 0;
1230 if (!send_pcb(dev, &adapter->tx_pcb))
1231 printk(KERN_ERR "%s: couldn't send set_multicast command\n", dev->name);
1233 unsigned long timeout = jiffies + TIMEOUT;
1234 while (adapter->got[CMD_LOAD_MULTICAST_LIST] == 0 && time_before(jiffies, timeout));
1235 if (time_after_eq(jiffies, timeout)) {
1236 TIMEOUT_MSG(__LINE__);
1240 adapter->tx_pcb.data.configure = NO_LOOPBACK | RECV_BROAD | RECV_MULTI;
1241 else /* num_addrs == 0 */
1242 adapter->tx_pcb.data.configure = NO_LOOPBACK | RECV_BROAD;
1244 adapter->tx_pcb.data.configure = NO_LOOPBACK | RECV_PROMISC;
1246 * configure adapter to receive messages (as specified above)
1247 * and wait for response
1250 printk(KERN_DEBUG "%s: sending 82586 configure command\n", dev->name);
1251 adapter->tx_pcb.command = CMD_CONFIGURE_82586;
1252 adapter->tx_pcb.length = 2;
1253 adapter->got[CMD_CONFIGURE_82586] = 0;
1254 if (!send_pcb(dev, &adapter->tx_pcb))
1256 spin_unlock_irqrestore(&adapter->lock, flags);
1257 printk(KERN_ERR "%s: couldn't send 82586 configure command\n", dev->name);
1260 unsigned long timeout = jiffies + TIMEOUT;
1261 spin_unlock_irqrestore(&adapter->lock, flags);
1262 while (adapter->got[CMD_CONFIGURE_82586] == 0 && time_before(jiffies, timeout));
1263 if (time_after_eq(jiffies, timeout))
1264 TIMEOUT_MSG(__LINE__);
1268 /************************************************************
1270 * A couple of tests to see if there's 3C505 or not
1271 * Called only by elp_autodetect
1272 ************************************************************/
1274 static int __init elp_sense(struct net_device *dev)
1276 int addr = dev->base_addr;
1277 const char *name = dev->name;
1280 if (!request_region(addr, ELP_IO_EXTENT, "3c505"))
1283 orig_HSR = inb_status(addr);
1286 printk(search_msg, name, addr);
1288 if (orig_HSR == 0xff) {
1290 printk(notfound_msg, 1);
1294 /* Wait for a while; the adapter may still be booting up */
1296 printk(stilllooking_msg);
1298 if (orig_HSR & DIR) {
1299 /* If HCR.DIR is up, we pull it down. HSR.DIR should follow. */
1300 outb(0, dev->base_addr + PORT_CONTROL);
1302 if (inb_status(addr) & DIR) {
1304 printk(notfound_msg, 2);
1308 /* If HCR.DIR is down, we pull it up. HSR.DIR should follow. */
1309 outb(DIR, dev->base_addr + PORT_CONTROL);
1311 if (!(inb_status(addr) & DIR)) {
1313 printk(notfound_msg, 3);
1318 * It certainly looks like a 3c505.
1325 release_region(addr, ELP_IO_EXTENT);
1329 /*************************************************************
1331 * Search through addr_list[] and try to find a 3C505
1332 * Called only by eplus_probe
1333 *************************************************************/
1335 static int __init elp_autodetect(struct net_device *dev)
1339 /* if base address set, then only check that address
1340 otherwise, run through the table */
1341 if (dev->base_addr != 0) { /* dev->base_addr == 0 ==> plain autodetect */
1342 if (elp_sense(dev) == 0)
1343 return dev->base_addr;
1345 while ((dev->base_addr = addr_list[idx++])) {
1346 if (elp_sense(dev) == 0)
1347 return dev->base_addr;
1350 /* could not find an adapter */
1352 printk(couldnot_msg, dev->name);
1354 return 0; /* Because of this, the layer above will return -ENODEV */
1357 static const struct net_device_ops elp_netdev_ops = {
1358 .ndo_open = elp_open,
1359 .ndo_stop = elp_close,
1360 .ndo_get_stats = elp_get_stats,
1361 .ndo_start_xmit = elp_start_xmit,
1362 .ndo_tx_timeout = elp_timeout,
1363 .ndo_set_multicast_list = elp_set_mc_list,
1364 .ndo_change_mtu = eth_change_mtu,
1365 .ndo_set_mac_address = eth_mac_addr,
1366 .ndo_validate_addr = eth_validate_addr,
1369 /******************************************************
1371 * probe for an Etherlink Plus board at the specified address
1373 ******************************************************/
1375 /* There are three situations we need to be able to detect here:
1377 * a) the card is idle
1378 * b) the card is still booting up
1379 * c) the card is stuck in a strange state (some DOS drivers do this)
1381 * In case (a), all is well. In case (b), we wait 10 seconds to see if the
1382 * card finishes booting, and carry on if so. In case (c), we do a hard reset,
1383 * loop round, and hope for the best.
1385 * This is all very unpleasant, but hopefully avoids the problems with the old
1386 * probe code (which had a 15-second delay if the card was idle, and didn't
1387 * work at all if it was in a weird state).
1390 static int __init elplus_setup(struct net_device *dev)
1392 elp_device *adapter = netdev_priv(dev);
1393 int i, tries, tries1, okay;
1394 unsigned long timeout;
1395 unsigned long cookie = 0;
1399 * setup adapter structure
1402 dev->base_addr = elp_autodetect(dev);
1403 if (!dev->base_addr)
1406 adapter->send_pcb_semaphore = 0;
1408 for (tries1 = 0; tries1 < 3; tries1++) {
1409 outb_control((adapter->hcr_val | CMDE) & ~DIR, dev);
1410 /* First try to write just one byte, to see if the card is
1411 * responding at all normally.
1413 timeout = jiffies + 5*HZ/100;
1415 while (time_before(jiffies, timeout) && !(inb_status(dev->base_addr) & HCRE));
1416 if ((inb_status(dev->base_addr) & HCRE)) {
1417 outb_command(0, dev->base_addr); /* send a spurious byte */
1418 timeout = jiffies + 5*HZ/100;
1419 while (time_before(jiffies, timeout) && !(inb_status(dev->base_addr) & HCRE));
1420 if (inb_status(dev->base_addr) & HCRE)
1424 /* Nope, it's ignoring the command register. This means that
1425 * either it's still booting up, or it's died.
1427 printk(KERN_ERR "%s: command register wouldn't drain, ", dev->name);
1428 if ((inb_status(dev->base_addr) & 7) == 3) {
1429 /* If the adapter status is 3, it *could* still be booting.
1430 * Give it the benefit of the doubt for 10 seconds.
1432 printk("assuming 3c505 still starting\n");
1433 timeout = jiffies + 10*HZ;
1434 while (time_before(jiffies, timeout) && (inb_status(dev->base_addr) & 7));
1435 if (inb_status(dev->base_addr) & 7) {
1436 printk(KERN_ERR "%s: 3c505 failed to start\n", dev->name);
1438 okay = 1; /* It started */
1441 /* Otherwise, it must just be in a strange
1442 * state. We probably need to kick it.
1444 printk("3c505 is sulking\n");
1447 for (tries = 0; tries < 5 && okay; tries++) {
1450 * Try to set the Ethernet address, to make sure that the board
1453 adapter->tx_pcb.command = CMD_STATION_ADDRESS;
1454 adapter->tx_pcb.length = 0;
1455 cookie = probe_irq_on();
1456 if (!send_pcb(dev, &adapter->tx_pcb)) {
1457 printk(KERN_ERR "%s: could not send first PCB\n", dev->name);
1458 probe_irq_off(cookie);
1461 if (!receive_pcb(dev, &adapter->rx_pcb)) {
1462 printk(KERN_ERR "%s: could not read first PCB\n", dev->name);
1463 probe_irq_off(cookie);
1466 if ((adapter->rx_pcb.command != CMD_ADDRESS_RESPONSE) ||
1467 (adapter->rx_pcb.length != 6)) {
1468 printk(KERN_ERR "%s: first PCB wrong (%d, %d)\n", dev->name, adapter->rx_pcb.command, adapter->rx_pcb.length);
1469 probe_irq_off(cookie);
1474 /* It's broken. Do a hard reset to re-initialise the board,
1477 printk(KERN_INFO "%s: resetting adapter\n", dev->name);
1478 outb_control(adapter->hcr_val | FLSH | ATTN, dev);
1479 outb_control(adapter->hcr_val & ~(FLSH | ATTN), dev);
1481 printk(KERN_ERR "%s: failed to initialise 3c505\n", dev->name);
1485 if (dev->irq) { /* Is there a preset IRQ? */
1486 int rpt = probe_irq_off(cookie);
1487 if (dev->irq != rpt) {
1488 printk(KERN_WARNING "%s: warning, irq %d configured but %d detected\n", dev->name, dev->irq, rpt);
1490 /* if dev->irq == probe_irq_off(cookie), all is well */
1491 } else /* No preset IRQ; just use what we can detect */
1492 dev->irq = probe_irq_off(cookie);
1493 switch (dev->irq) { /* Legal, sane? */
1495 printk(KERN_ERR "%s: IRQ probe failed: check 3c505 jumpers.\n",
1502 printk(KERN_ERR "%s: Impossible IRQ %d reported by probe_irq_off().\n",
1503 dev->name, dev->irq);
1507 * Now we have the IRQ number so we can disable the interrupts from
1508 * the board until the board is opened.
1510 outb_control(adapter->hcr_val & ~CMDE, dev);
1513 * copy Ethernet address into structure
1515 for (i = 0; i < 6; i++)
1516 dev->dev_addr[i] = adapter->rx_pcb.data.eth_addr[i];
1518 /* find a DMA channel */
1520 if (dev->mem_start) {
1521 dev->dma = dev->mem_start & 7;
1524 printk(KERN_WARNING "%s: warning, DMA channel not specified, using default\n", dev->name);
1530 * print remainder of startup message
1532 printk(KERN_INFO "%s: 3c505 at %#lx, irq %d, dma %d, "
1534 dev->name, dev->base_addr, dev->irq, dev->dma,
1538 * read more information from the adapter
1541 adapter->tx_pcb.command = CMD_ADAPTER_INFO;
1542 adapter->tx_pcb.length = 0;
1543 if (!send_pcb(dev, &adapter->tx_pcb) ||
1544 !receive_pcb(dev, &adapter->rx_pcb) ||
1545 (adapter->rx_pcb.command != CMD_ADAPTER_INFO_RESPONSE) ||
1546 (adapter->rx_pcb.length != 10)) {
1547 printk("not responding to second PCB\n");
1549 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);
1552 * reconfigure the adapter memory to better suit our purposes
1554 adapter->tx_pcb.command = CMD_CONFIGURE_ADAPTER_MEMORY;
1555 adapter->tx_pcb.length = 12;
1556 adapter->tx_pcb.data.memconf.cmd_q = 8;
1557 adapter->tx_pcb.data.memconf.rcv_q = 8;
1558 adapter->tx_pcb.data.memconf.mcast = 10;
1559 adapter->tx_pcb.data.memconf.frame = 10;
1560 adapter->tx_pcb.data.memconf.rcv_b = 10;
1561 adapter->tx_pcb.data.memconf.progs = 0;
1562 if (!send_pcb(dev, &adapter->tx_pcb) ||
1563 !receive_pcb(dev, &adapter->rx_pcb) ||
1564 (adapter->rx_pcb.command != CMD_CONFIGURE_ADAPTER_RESPONSE) ||
1565 (adapter->rx_pcb.length != 2)) {
1566 printk(KERN_ERR "%s: could not configure adapter memory\n", dev->name);
1568 if (adapter->rx_pcb.data.configure) {
1569 printk(KERN_ERR "%s: adapter configuration failed\n", dev->name);
1572 dev->netdev_ops = &elp_netdev_ops;
1573 dev->watchdog_timeo = 10*HZ;
1574 dev->ethtool_ops = &netdev_ethtool_ops; /* local */
1576 dev->mem_start = dev->mem_end = 0;
1578 err = register_netdev(dev);
1584 release_region(dev->base_addr, ELP_IO_EXTENT);
1589 struct net_device * __init elplus_probe(int unit)
1591 struct net_device *dev = alloc_etherdev(sizeof(elp_device));
1594 return ERR_PTR(-ENOMEM);
1596 sprintf(dev->name, "eth%d", unit);
1597 netdev_boot_setup_check(dev);
1599 err = elplus_setup(dev);
1602 return ERR_PTR(err);
1608 static struct net_device *dev_3c505[ELP_MAX_CARDS];
1609 static int io[ELP_MAX_CARDS];
1610 static int irq[ELP_MAX_CARDS];
1611 static int dma[ELP_MAX_CARDS];
1612 module_param_array(io, int, NULL, 0);
1613 module_param_array(irq, int, NULL, 0);
1614 module_param_array(dma, int, NULL, 0);
1615 MODULE_PARM_DESC(io, "EtherLink Plus I/O base address(es)");
1616 MODULE_PARM_DESC(irq, "EtherLink Plus IRQ number(s) (assigned)");
1617 MODULE_PARM_DESC(dma, "EtherLink Plus DMA channel(s)");
1619 int __init init_module(void)
1621 int this_dev, found = 0;
1623 for (this_dev = 0; this_dev < ELP_MAX_CARDS; this_dev++) {
1624 struct net_device *dev = alloc_etherdev(sizeof(elp_device));
1628 dev->irq = irq[this_dev];
1629 dev->base_addr = io[this_dev];
1630 if (dma[this_dev]) {
1631 dev->dma = dma[this_dev];
1634 printk(KERN_WARNING "3c505.c: warning, using default DMA channel,\n");
1636 if (io[this_dev] == 0) {
1641 printk(KERN_NOTICE "3c505.c: module autoprobe not recommended, give io=xx.\n");
1643 if (elplus_setup(dev) != 0) {
1644 printk(KERN_WARNING "3c505.c: Failed to register card at 0x%x.\n", io[this_dev]);
1648 dev_3c505[this_dev] = dev;
1656 void __exit cleanup_module(void)
1660 for (this_dev = 0; this_dev < ELP_MAX_CARDS; this_dev++) {
1661 struct net_device *dev = dev_3c505[this_dev];
1663 unregister_netdev(dev);
1664 release_region(dev->base_addr, ELP_IO_EXTENT);
1671 MODULE_LICENSE("GPL");