1 /*======================================================================
3 A PCMCIA ethernet driver for Asix AX88190-based cards
5 The Asix AX88190 is a NS8390-derived chipset with a few nasty
6 idiosyncracies that make it very inconvenient to support with a
7 standard 8390 driver. This driver is based on pcnet_cs, with the
8 tweaked 8390 code grafted on the end. Much of what I did was to
9 clean up and update a similar driver supplied by Asix, which was
10 adapted by William Lee, william@asix.com.tw.
12 Copyright (C) 2001 David A. Hinds -- dahinds@users.sourceforge.net
14 axnet_cs.c 1.28 2002/06/29 06:27:37
16 The network driver code is based on Donald Becker's NE2000 code:
18 Written 1992,1993 by Donald Becker.
19 Copyright 1993 United States Government as represented by the
20 Director, National Security Agency. This software may be used and
21 distributed according to the terms of the GNU General Public License,
22 incorporated herein by reference.
23 Donald Becker may be reached at becker@scyld.com
25 ======================================================================*/
27 #include <linux/kernel.h>
28 #include <linux/module.h>
29 #include <linux/init.h>
30 #include <linux/ptrace.h>
31 #include <linux/slab.h>
32 #include <linux/string.h>
33 #include <linux/timer.h>
34 #include <linux/delay.h>
35 #include <linux/spinlock.h>
36 #include <linux/ethtool.h>
37 #include <linux/netdevice.h>
38 #include <linux/etherdevice.h>
39 #include <linux/crc32.h>
42 #include <pcmcia/cs_types.h>
43 #include <pcmcia/cs.h>
44 #include <pcmcia/cistpl.h>
45 #include <pcmcia/ciscode.h>
46 #include <pcmcia/ds.h>
47 #include <pcmcia/cisreg.h>
50 #include <asm/system.h>
51 #include <asm/byteorder.h>
52 #include <asm/uaccess.h>
54 #define AXNET_CMD 0x00
55 #define AXNET_DATAPORT 0x10 /* NatSemi-defined port window offset. */
56 #define AXNET_RESET 0x1f /* Issue a read to reset, a write to clear. */
57 #define AXNET_MII_EEP 0x14 /* Offset of MII access port */
58 #define AXNET_TEST 0x15 /* Offset of TEST Register port */
59 #define AXNET_GPIO 0x17 /* Offset of General Purpose Register Port */
61 #define AXNET_START_PG 0x40 /* First page of TX buffer */
62 #define AXNET_STOP_PG 0x80 /* Last page +1 of RX ring */
64 #define AXNET_RDC_TIMEOUT 0x02 /* Max wait in jiffies for Tx RDC */
66 #define IS_AX88190 0x0001
67 #define IS_AX88790 0x0002
69 /*====================================================================*/
71 /* Module parameters */
73 MODULE_AUTHOR("David Hinds <dahinds@users.sourceforge.net>");
74 MODULE_DESCRIPTION("Asix AX88190 PCMCIA ethernet driver");
75 MODULE_LICENSE("GPL");
78 #define INT_MODULE_PARM(n, v) static int n = v; module_param(n, int, 0)
80 INT_MODULE_PARM(pc_debug, PCMCIA_DEBUG);
81 #define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args)
82 static char *version =
83 "axnet_cs.c 1.28 2002/06/29 06:27:37 (David Hinds)";
85 #define DEBUG(n, args...)
88 /*====================================================================*/
90 static int axnet_config(struct pcmcia_device *link);
91 static void axnet_release(struct pcmcia_device *link);
92 static int axnet_open(struct net_device *dev);
93 static int axnet_close(struct net_device *dev);
94 static int axnet_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
95 static int axnet_start_xmit(struct sk_buff *skb, struct net_device *dev);
96 static struct net_device_stats *get_stats(struct net_device *dev);
97 static void set_multicast_list(struct net_device *dev);
98 static void axnet_tx_timeout(struct net_device *dev);
99 static const struct ethtool_ops netdev_ethtool_ops;
100 static irqreturn_t ei_irq_wrapper(int irq, void *dev_id);
101 static void ei_watchdog(u_long arg);
102 static void axnet_reset_8390(struct net_device *dev);
104 static int mdio_read(unsigned int addr, int phy_id, int loc);
105 static void mdio_write(unsigned int addr, int phy_id, int loc, int value);
107 static void get_8390_hdr(struct net_device *,
108 struct e8390_pkt_hdr *, int);
109 static void block_input(struct net_device *dev, int count,
110 struct sk_buff *skb, int ring_offset);
111 static void block_output(struct net_device *dev, int count,
112 const u_char *buf, const int start_page);
114 static void axnet_detach(struct pcmcia_device *p_dev);
116 static void AX88190_init(struct net_device *dev, int startp);
117 static int ax_open(struct net_device *dev);
118 static int ax_close(struct net_device *dev);
119 static irqreturn_t ax_interrupt(int irq, void *dev_id);
121 /*====================================================================*/
123 typedef struct axnet_dev_t {
124 struct pcmcia_device *p_dev;
127 struct timer_list watchdog;
128 int stale, fast_poll;
135 static inline axnet_dev_t *PRIV(struct net_device *dev)
137 void *p = (char *)netdev_priv(dev) + sizeof(struct ei_device);
141 static const struct net_device_ops axnet_netdev_ops = {
142 .ndo_open = axnet_open,
143 .ndo_stop = axnet_close,
144 .ndo_do_ioctl = axnet_ioctl,
145 .ndo_start_xmit = axnet_start_xmit,
146 .ndo_tx_timeout = axnet_tx_timeout,
147 .ndo_get_stats = get_stats,
148 .ndo_set_multicast_list = set_multicast_list,
149 .ndo_change_mtu = eth_change_mtu,
150 .ndo_set_mac_address = eth_mac_addr,
151 .ndo_validate_addr = eth_validate_addr,
154 /*======================================================================
156 axnet_attach() creates an "instance" of the driver, allocating
157 local data structures for one device. The device is registered
160 ======================================================================*/
162 static int axnet_probe(struct pcmcia_device *link)
165 struct net_device *dev;
166 struct ei_device *ei_local;
168 DEBUG(0, "axnet_attach()\n");
170 dev = alloc_etherdev(sizeof(struct ei_device) + sizeof(axnet_dev_t));
174 ei_local = netdev_priv(dev);
175 spin_lock_init(&ei_local->page_lock);
180 link->irq.Attributes = IRQ_TYPE_DYNAMIC_SHARING;
181 link->irq.IRQInfo1 = IRQ_LEVEL_ID;
182 link->conf.Attributes = CONF_ENABLE_IRQ;
183 link->conf.IntType = INT_MEMORY_AND_IO;
185 dev->netdev_ops = &axnet_netdev_ops;
187 SET_ETHTOOL_OPS(dev, &netdev_ethtool_ops);
188 dev->watchdog_timeo = TX_TIMEOUT;
190 return axnet_config(link);
193 /*======================================================================
195 This deletes a driver "instance". The device is de-registered
196 with Card Services. If it has been released, all local data
197 structures are freed. Otherwise, the structures will be freed
198 when the device is released.
200 ======================================================================*/
202 static void axnet_detach(struct pcmcia_device *link)
204 struct net_device *dev = link->priv;
206 DEBUG(0, "axnet_detach(0x%p)\n", link);
209 unregister_netdev(dev);
216 /*======================================================================
218 This probes for a card's hardware address by reading the PROM.
220 ======================================================================*/
222 static int get_prom(struct pcmcia_device *link)
224 struct net_device *dev = link->priv;
225 unsigned int ioaddr = dev->base_addr;
228 /* This is based on drivers/net/ne.c */
230 u_char value, offset;
232 {E8390_NODMA+E8390_PAGE0+E8390_STOP, E8390_CMD}, /* Select page 0*/
233 {0x01, EN0_DCFG}, /* Set word-wide access. */
234 {0x00, EN0_RCNTLO}, /* Clear the count regs. */
236 {0x00, EN0_IMR}, /* Mask completion irq. */
238 {E8390_RXOFF|0x40, EN0_RXCR}, /* 0x60 Set to monitor */
239 {E8390_TXOFF, EN0_TXCR}, /* 0x02 and loopback mode. */
242 {0x00, EN0_RSARLO}, /* DMA starting at 0x0400. */
244 {E8390_RREAD+E8390_START, E8390_CMD},
247 /* Not much of a test, but the alternatives are messy */
248 if (link->conf.ConfigBase != 0x03c0)
251 axnet_reset_8390(dev);
254 for (i = 0; i < ARRAY_SIZE(program_seq); i++)
255 outb_p(program_seq[i].value, ioaddr + program_seq[i].offset);
257 for (i = 0; i < 6; i += 2) {
258 j = inw(ioaddr + AXNET_DATAPORT);
259 dev->dev_addr[i] = j & 0xff;
260 dev->dev_addr[i+1] = j >> 8;
265 /*======================================================================
267 axnet_config() is scheduled to run after a CARD_INSERTION event
268 is received, to configure the PCMCIA socket, and to make the
269 ethernet device available to the system.
271 ======================================================================*/
273 #define CS_CHECK(fn, ret) \
274 do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
276 static int try_io_port(struct pcmcia_device *link)
279 if (link->io.NumPorts1 == 32) {
280 link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;
281 if (link->io.NumPorts2 > 0) {
282 /* for master/slave multifunction cards */
283 link->io.Attributes2 = IO_DATA_PATH_WIDTH_8;
284 link->irq.Attributes =
285 IRQ_TYPE_DYNAMIC_SHARING|IRQ_FIRST_SHARED;
288 /* This should be two 16-port windows */
289 link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
290 link->io.Attributes2 = IO_DATA_PATH_WIDTH_16;
292 if (link->io.BasePort1 == 0) {
293 link->io.IOAddrLines = 16;
294 for (j = 0; j < 0x400; j += 0x20) {
295 link->io.BasePort1 = j ^ 0x300;
296 link->io.BasePort2 = (j ^ 0x300) + 0x10;
297 ret = pcmcia_request_io(link, &link->io);
303 return pcmcia_request_io(link, &link->io);
307 static int axnet_configcheck(struct pcmcia_device *p_dev,
308 cistpl_cftable_entry_t *cfg,
309 cistpl_cftable_entry_t *dflt,
314 cistpl_io_t *io = &cfg->io;
316 if (cfg->index == 0 || cfg->io.nwin == 0)
319 p_dev->conf.ConfigIndex = 0x05;
320 /* For multifunction cards, by convention, we configure the
321 network function with window 0, and serial with window 1 */
323 i = (io->win[1].len > io->win[0].len);
324 p_dev->io.BasePort2 = io->win[1-i].base;
325 p_dev->io.NumPorts2 = io->win[1-i].len;
327 i = p_dev->io.NumPorts2 = 0;
329 p_dev->io.BasePort1 = io->win[i].base;
330 p_dev->io.NumPorts1 = io->win[i].len;
331 p_dev->io.IOAddrLines = io->flags & CISTPL_IO_LINES_MASK;
332 if (p_dev->io.NumPorts1 + p_dev->io.NumPorts2 >= 32)
333 return try_io_port(p_dev);
338 static int axnet_config(struct pcmcia_device *link)
340 struct net_device *dev = link->priv;
341 axnet_dev_t *info = PRIV(dev);
342 int i, j, last_ret, last_fn;
344 DEBUG(0, "axnet_config(0x%p)\n", link);
346 /* don't trust the CIS on this; Linksys got it wrong */
347 link->conf.Present = 0x63;
348 last_ret = pcmcia_loop_config(link, axnet_configcheck, NULL);
350 cs_error(link, RequestIO, last_ret);
354 CS_CHECK(RequestIRQ, pcmcia_request_irq(link, &link->irq));
356 if (link->io.NumPorts2 == 8) {
357 link->conf.Attributes |= CONF_ENABLE_SPKR;
358 link->conf.Status = CCSR_AUDIO_ENA;
361 CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link, &link->conf));
362 dev->irq = link->irq.AssignedIRQ;
363 dev->base_addr = link->io.BasePort1;
365 if (!get_prom(link)) {
366 printk(KERN_NOTICE "axnet_cs: this is not an AX88190 card!\n");
367 printk(KERN_NOTICE "axnet_cs: use pcnet_cs instead.\n");
371 ei_status.name = "AX88190";
372 ei_status.word16 = 1;
373 ei_status.tx_start_page = AXNET_START_PG;
374 ei_status.rx_start_page = AXNET_START_PG + TX_PAGES;
375 ei_status.stop_page = AXNET_STOP_PG;
376 ei_status.reset_8390 = &axnet_reset_8390;
377 ei_status.get_8390_hdr = &get_8390_hdr;
378 ei_status.block_input = &block_input;
379 ei_status.block_output = &block_output;
381 if (inb(dev->base_addr + AXNET_TEST) != 0)
382 info->flags |= IS_AX88790;
384 info->flags |= IS_AX88190;
386 if (info->flags & IS_AX88790)
387 outb(0x10, dev->base_addr + AXNET_GPIO); /* select Internal PHY */
389 for (i = 0; i < 32; i++) {
390 j = mdio_read(dev->base_addr + AXNET_MII_EEP, i, 1);
391 if ((j != 0) && (j != 0xffff)) break;
394 /* Maybe PHY is in power down mode. (PPD_SET = 1)
395 Bit 2 of CCSR is active low. */
397 conf_reg_t reg = { 0, CS_WRITE, CISREG_CCSR, 0x04 };
398 pcmcia_access_configuration_register(link, ®);
399 for (i = 0; i < 32; i++) {
400 j = mdio_read(dev->base_addr + AXNET_MII_EEP, i, 1);
401 if ((j != 0) && (j != 0xffff)) break;
405 info->phy_id = (i < 32) ? i : -1;
406 link->dev_node = &info->node;
407 SET_NETDEV_DEV(dev, &handle_to_dev(link));
409 if (register_netdev(dev) != 0) {
410 printk(KERN_NOTICE "axnet_cs: register_netdev() failed\n");
411 link->dev_node = NULL;
415 strcpy(info->node.dev_name, dev->name);
417 printk(KERN_INFO "%s: Asix AX88%d90: io %#3lx, irq %d, "
419 dev->name, ((info->flags & IS_AX88790) ? 7 : 1),
420 dev->base_addr, dev->irq,
422 if (info->phy_id != -1) {
423 DEBUG(0, " MII transceiver at index %d, status %x.\n", info->phy_id, j);
425 printk(KERN_NOTICE " No MII transceivers found!\n");
430 cs_error(link, last_fn, last_ret);
436 /*======================================================================
438 After a card is removed, axnet_release() will unregister the net
439 device, and release the PCMCIA configuration. If the device is
440 still open, this will be postponed until it is closed.
442 ======================================================================*/
444 static void axnet_release(struct pcmcia_device *link)
446 pcmcia_disable_device(link);
449 static int axnet_suspend(struct pcmcia_device *link)
451 struct net_device *dev = link->priv;
454 netif_device_detach(dev);
459 static int axnet_resume(struct pcmcia_device *link)
461 struct net_device *dev = link->priv;
464 axnet_reset_8390(dev);
465 AX88190_init(dev, 1);
466 netif_device_attach(dev);
473 /*======================================================================
475 MII interface support
477 ======================================================================*/
479 #define MDIO_SHIFT_CLK 0x01
480 #define MDIO_DATA_WRITE0 0x00
481 #define MDIO_DATA_WRITE1 0x08
482 #define MDIO_DATA_READ 0x04
483 #define MDIO_MASK 0x0f
484 #define MDIO_ENB_IN 0x02
486 static void mdio_sync(unsigned int addr)
489 for (bits = 0; bits < 32; bits++) {
490 outb_p(MDIO_DATA_WRITE1, addr);
491 outb_p(MDIO_DATA_WRITE1 | MDIO_SHIFT_CLK, addr);
495 static int mdio_read(unsigned int addr, int phy_id, int loc)
497 u_int cmd = (0xf6<<10)|(phy_id<<5)|loc;
501 for (i = 14; i >= 0; i--) {
502 int dat = (cmd&(1<<i)) ? MDIO_DATA_WRITE1 : MDIO_DATA_WRITE0;
504 outb_p(dat | MDIO_SHIFT_CLK, addr);
506 for (i = 19; i > 0; i--) {
507 outb_p(MDIO_ENB_IN, addr);
508 retval = (retval << 1) | ((inb_p(addr) & MDIO_DATA_READ) != 0);
509 outb_p(MDIO_ENB_IN | MDIO_SHIFT_CLK, addr);
511 return (retval>>1) & 0xffff;
514 static void mdio_write(unsigned int addr, int phy_id, int loc, int value)
516 u_int cmd = (0x05<<28)|(phy_id<<23)|(loc<<18)|(1<<17)|value;
520 for (i = 31; i >= 0; i--) {
521 int dat = (cmd&(1<<i)) ? MDIO_DATA_WRITE1 : MDIO_DATA_WRITE0;
523 outb_p(dat | MDIO_SHIFT_CLK, addr);
525 for (i = 1; i >= 0; i--) {
526 outb_p(MDIO_ENB_IN, addr);
527 outb_p(MDIO_ENB_IN | MDIO_SHIFT_CLK, addr);
531 /*====================================================================*/
533 static int axnet_open(struct net_device *dev)
536 axnet_dev_t *info = PRIV(dev);
537 struct pcmcia_device *link = info->p_dev;
538 unsigned int nic_base = dev->base_addr;
540 DEBUG(2, "axnet_open('%s')\n", dev->name);
542 if (!pcmcia_dev_present(link))
545 outb_p(0xFF, nic_base + EN0_ISR); /* Clear bogus intr. */
546 ret = request_irq(dev->irq, ei_irq_wrapper, IRQF_SHARED, "axnet_cs", dev);
552 info->link_status = 0x00;
553 init_timer(&info->watchdog);
554 info->watchdog.function = &ei_watchdog;
555 info->watchdog.data = (u_long)dev;
556 info->watchdog.expires = jiffies + HZ;
557 add_timer(&info->watchdog);
562 /*====================================================================*/
564 static int axnet_close(struct net_device *dev)
566 axnet_dev_t *info = PRIV(dev);
567 struct pcmcia_device *link = info->p_dev;
569 DEBUG(2, "axnet_close('%s')\n", dev->name);
572 free_irq(dev->irq, dev);
575 netif_stop_queue(dev);
576 del_timer_sync(&info->watchdog);
581 /*======================================================================
583 Hard reset the card. This used to pause for the same period that
584 a 8390 reset command required, but that shouldn't be necessary.
586 ======================================================================*/
588 static void axnet_reset_8390(struct net_device *dev)
590 unsigned int nic_base = dev->base_addr;
593 ei_status.txing = ei_status.dmaing = 0;
595 outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, nic_base + E8390_CMD);
597 outb(inb(nic_base + AXNET_RESET), nic_base + AXNET_RESET);
599 for (i = 0; i < 100; i++) {
600 if ((inb_p(nic_base+EN0_ISR) & ENISR_RESET) != 0)
604 outb_p(ENISR_RESET, nic_base + EN0_ISR); /* Ack intr. */
607 printk(KERN_ERR "%s: axnet_reset_8390() did not complete.\n",
610 } /* axnet_reset_8390 */
612 /*====================================================================*/
614 static irqreturn_t ei_irq_wrapper(int irq, void *dev_id)
616 struct net_device *dev = dev_id;
617 PRIV(dev)->stale = 0;
618 return ax_interrupt(irq, dev_id);
621 static void ei_watchdog(u_long arg)
623 struct net_device *dev = (struct net_device *)(arg);
624 axnet_dev_t *info = PRIV(dev);
625 unsigned int nic_base = dev->base_addr;
626 unsigned int mii_addr = nic_base + AXNET_MII_EEP;
629 if (!netif_device_present(dev)) goto reschedule;
631 /* Check for pending interrupt with expired latency timer: with
632 this, we can limp along even if the interrupt is blocked */
633 if (info->stale++ && (inb_p(nic_base + EN0_ISR) & ENISR_ALL)) {
634 if (!info->fast_poll)
635 printk(KERN_INFO "%s: interrupt(s) dropped!\n", dev->name);
636 ei_irq_wrapper(dev->irq, dev);
637 info->fast_poll = HZ;
639 if (info->fast_poll) {
641 info->watchdog.expires = jiffies + 1;
642 add_timer(&info->watchdog);
646 if (info->phy_id < 0)
648 link = mdio_read(mii_addr, info->phy_id, 1);
649 if (!link || (link == 0xffff)) {
650 printk(KERN_INFO "%s: MII is missing!\n", dev->name);
656 if (link != info->link_status) {
657 u_short p = mdio_read(mii_addr, info->phy_id, 5);
658 printk(KERN_INFO "%s: %s link beat\n", dev->name,
659 (link) ? "found" : "lost");
661 info->duplex_flag = (p & 0x0140) ? 0x80 : 0x00;
663 printk(KERN_INFO "%s: autonegotiation complete: "
664 "%sbaseT-%cD selected\n", dev->name,
665 ((p & 0x0180) ? "100" : "10"),
666 ((p & 0x0140) ? 'F' : 'H'));
668 printk(KERN_INFO "%s: link partner did not autonegotiate\n",
670 AX88190_init(dev, 1);
672 info->link_status = link;
676 info->watchdog.expires = jiffies + HZ;
677 add_timer(&info->watchdog);
680 static void netdev_get_drvinfo(struct net_device *dev,
681 struct ethtool_drvinfo *info)
683 strcpy(info->driver, "axnet_cs");
686 static const struct ethtool_ops netdev_ethtool_ops = {
687 .get_drvinfo = netdev_get_drvinfo,
690 /*====================================================================*/
692 static int axnet_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
694 axnet_dev_t *info = PRIV(dev);
695 u16 *data = (u16 *)&rq->ifr_ifru;
696 unsigned int mii_addr = dev->base_addr + AXNET_MII_EEP;
699 data[0] = info->phy_id;
700 case SIOCGMIIREG: /* Read MII PHY register. */
701 data[3] = mdio_read(mii_addr, data[0], data[1] & 0x1f);
703 case SIOCSMIIREG: /* Write MII PHY register. */
704 if (!capable(CAP_NET_ADMIN))
706 mdio_write(mii_addr, data[0], data[1] & 0x1f, data[2]);
712 /*====================================================================*/
714 static void get_8390_hdr(struct net_device *dev,
715 struct e8390_pkt_hdr *hdr,
718 unsigned int nic_base = dev->base_addr;
720 outb_p(0, nic_base + EN0_RSARLO); /* On page boundary */
721 outb_p(ring_page, nic_base + EN0_RSARHI);
722 outb_p(E8390_RREAD+E8390_START, nic_base + AXNET_CMD);
724 insw(nic_base + AXNET_DATAPORT, hdr,
725 sizeof(struct e8390_pkt_hdr)>>1);
726 /* Fix for big endian systems */
727 hdr->count = le16_to_cpu(hdr->count);
731 /*====================================================================*/
733 static void block_input(struct net_device *dev, int count,
734 struct sk_buff *skb, int ring_offset)
736 unsigned int nic_base = dev->base_addr;
737 int xfer_count = count;
738 char *buf = skb->data;
741 if ((ei_debug > 4) && (count != 4))
742 printk(KERN_DEBUG "%s: [bi=%d]\n", dev->name, count+4);
744 outb_p(ring_offset & 0xff, nic_base + EN0_RSARLO);
745 outb_p(ring_offset >> 8, nic_base + EN0_RSARHI);
746 outb_p(E8390_RREAD+E8390_START, nic_base + AXNET_CMD);
748 insw(nic_base + AXNET_DATAPORT,buf,count>>1);
750 buf[count-1] = inb(nic_base + AXNET_DATAPORT), xfer_count++;
754 /*====================================================================*/
756 static void block_output(struct net_device *dev, int count,
757 const u_char *buf, const int start_page)
759 unsigned int nic_base = dev->base_addr;
763 printk(KERN_DEBUG "%s: [bo=%d]\n", dev->name, count);
766 /* Round the count up for word writes. Do we need to do this?
767 What effect will an odd byte count have on the 8390?
768 I should check someday. */
772 outb_p(0x00, nic_base + EN0_RSARLO);
773 outb_p(start_page, nic_base + EN0_RSARHI);
774 outb_p(E8390_RWRITE+E8390_START, nic_base + AXNET_CMD);
775 outsw(nic_base + AXNET_DATAPORT, buf, count>>1);
778 static struct pcmcia_device_id axnet_ids[] = {
779 PCMCIA_PFC_DEVICE_MANF_CARD(0, 0x016c, 0x0081),
780 PCMCIA_DEVICE_MANF_CARD(0x018a, 0x0301),
781 PCMCIA_DEVICE_MANF_CARD(0x026f, 0x0301),
782 PCMCIA_DEVICE_MANF_CARD(0x026f, 0x0303),
783 PCMCIA_DEVICE_MANF_CARD(0x026f, 0x0309),
784 PCMCIA_DEVICE_MANF_CARD(0x0274, 0x1106),
785 PCMCIA_DEVICE_MANF_CARD(0x8a01, 0xc1ab),
786 PCMCIA_DEVICE_MANF_CARD(0x021b, 0x0202),
787 PCMCIA_DEVICE_MANF_CARD(0xffff, 0x1090),
788 PCMCIA_DEVICE_PROD_ID12("AmbiCom,Inc.", "Fast Ethernet PC Card(AMB8110)", 0x49b020a7, 0x119cc9fc),
789 PCMCIA_DEVICE_PROD_ID124("Fast Ethernet", "16-bit PC Card", "AX88190", 0xb4be14e3, 0x9a12eb6a, 0xab9be5ef),
790 PCMCIA_DEVICE_PROD_ID12("ASIX", "AX88190", 0x0959823b, 0xab9be5ef),
791 PCMCIA_DEVICE_PROD_ID12("Billionton", "LNA-100B", 0x552ab682, 0xbc3b87e1),
792 PCMCIA_DEVICE_PROD_ID12("CHEETAH ETHERCARD", "EN2228", 0x00fa7bc8, 0x00e990cc),
793 PCMCIA_DEVICE_PROD_ID12("CNet", "CNF301", 0xbc477dde, 0x78c5f40b),
794 PCMCIA_DEVICE_PROD_ID12("corega K.K.", "corega FEther PCC-TXD", 0x5261440f, 0x436768c5),
795 PCMCIA_DEVICE_PROD_ID12("corega K.K.", "corega FEtherII PCC-TXD", 0x5261440f, 0x730df72e),
796 PCMCIA_DEVICE_PROD_ID12("Dynalink", "L100C16", 0x55632fd5, 0x66bc2a90),
797 PCMCIA_DEVICE_PROD_ID12("IO DATA", "ETXPCM", 0x547e66dc, 0x233adac2),
798 PCMCIA_DEVICE_PROD_ID12("Linksys", "EtherFast 10/100 PC Card (PCMPC100 V3)", 0x0733cc81, 0x232019a8),
799 PCMCIA_DEVICE_PROD_ID12("MELCO", "LPC3-TX", 0x481e0094, 0xf91af609),
800 PCMCIA_DEVICE_PROD_ID12("NETGEAR", "FA411", 0x9aa79dc3, 0x40fad875),
801 PCMCIA_DEVICE_PROD_ID12("PCMCIA", "100BASE", 0x281f1c5d, 0x7c2add04),
802 PCMCIA_DEVICE_PROD_ID12("PCMCIA", "FastEtherCard", 0x281f1c5d, 0x7ef26116),
803 PCMCIA_DEVICE_PROD_ID12("PCMCIA", "FEP501", 0x281f1c5d, 0x2e272058),
804 PCMCIA_DEVICE_PROD_ID14("Network Everywhere", "AX88190", 0x820a67b6, 0xab9be5ef),
807 MODULE_DEVICE_TABLE(pcmcia, axnet_ids);
809 static struct pcmcia_driver axnet_cs_driver = {
810 .owner = THIS_MODULE,
814 .probe = axnet_probe,
815 .remove = axnet_detach,
816 .id_table = axnet_ids,
817 .suspend = axnet_suspend,
818 .resume = axnet_resume,
821 static int __init init_axnet_cs(void)
823 return pcmcia_register_driver(&axnet_cs_driver);
826 static void __exit exit_axnet_cs(void)
828 pcmcia_unregister_driver(&axnet_cs_driver);
831 module_init(init_axnet_cs);
832 module_exit(exit_axnet_cs);
834 /*====================================================================*/
836 /* 8390.c: A general NS8390 ethernet driver core for linux. */
838 Written 1992-94 by Donald Becker.
840 Copyright 1993 United States Government as represented by the
841 Director, National Security Agency.
843 This software may be used and distributed according to the terms
844 of the GNU General Public License, incorporated herein by reference.
846 The author may be reached as becker@scyld.com, or C/O
847 Scyld Computing Corporation
848 410 Severn Ave., Suite 210
851 This is the chip-specific code for many 8390-based ethernet adaptors.
852 This is not a complete driver, it must be combined with board-specific
853 code such as ne.c, wd.c, 3c503.c, etc.
855 Seeing how at least eight drivers use this code, (not counting the
856 PCMCIA ones either) it is easy to break some card by what seems like
857 a simple innocent change. Please contact me or Donald if you think
858 you have found something that needs changing. -- PG
862 Paul Gortmaker : remove set_bit lock, other cleanups.
863 Paul Gortmaker : add ei_get_8390_hdr() so we can pass skb's to
864 ei_block_input() for eth_io_copy_and_sum().
865 Paul Gortmaker : exchange static int ei_pingpong for a #define,
866 also add better Tx error handling.
867 Paul Gortmaker : rewrite Rx overrun handling as per NS specs.
868 Alexey Kuznetsov : use the 8390's six bit hash multicast filter.
869 Paul Gortmaker : tweak ANK's above multicast changes a bit.
870 Paul Gortmaker : update packet statistics for v2.1.x
871 Alan Cox : support arbitary stupid port mappings on the
872 68K Macintosh. Support >16bit I/O spaces
873 Paul Gortmaker : add kmod support for auto-loading of the 8390
874 module by all drivers that require it.
875 Alan Cox : Spinlocking work, added 'BUG_83C690'
876 Paul Gortmaker : Separate out Tx timeout code from Tx path.
879 The National Semiconductor LAN Databook, and the 3Com 3c503 databook.
883 static const char version_8390[] = KERN_INFO \
884 "8390.c:v1.10cvs 9/23/94 Donald Becker (becker@scyld.com)\n";
886 #include <linux/bitops.h>
888 #include <linux/fcntl.h>
889 #include <linux/in.h>
890 #include <linux/interrupt.h>
892 #include <linux/etherdevice.h>
896 /* These are the operational function interfaces to board-specific
898 void reset_8390(struct net_device *dev)
899 Resets the board associated with DEV, including a hardware reset of
900 the 8390. This is only called when there is a transmit timeout, and
901 it is always followed by 8390_init().
902 void block_output(struct net_device *dev, int count, const unsigned char *buf,
904 Write the COUNT bytes of BUF to the packet buffer at START_PAGE. The
905 "page" value uses the 8390's 256-byte pages.
906 void get_8390_hdr(struct net_device *dev, struct e8390_hdr *hdr, int ring_page)
907 Read the 4 byte, page aligned 8390 header. *If* there is a
908 subsequent read, it will be of the rest of the packet.
909 void block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset)
910 Read COUNT bytes from the packet buffer into the skb data area. Start
911 reading from RING_OFFSET, the address as the 8390 sees it. This will always
912 follow the read of the 8390 header.
914 #define ei_reset_8390 (ei_local->reset_8390)
915 #define ei_block_output (ei_local->block_output)
916 #define ei_block_input (ei_local->block_input)
917 #define ei_get_8390_hdr (ei_local->get_8390_hdr)
919 /* use 0 for production, 1 for verification, >2 for debug */
924 /* Index to functions. */
925 static void ei_tx_intr(struct net_device *dev);
926 static void ei_tx_err(struct net_device *dev);
927 static void ei_receive(struct net_device *dev);
928 static void ei_rx_overrun(struct net_device *dev);
930 /* Routines generic to NS8390-based boards. */
931 static void NS8390_trigger_send(struct net_device *dev, unsigned int length,
933 static void do_set_multicast_list(struct net_device *dev);
936 * SMP and the 8390 setup.
938 * The 8390 isnt exactly designed to be multithreaded on RX/TX. There is
939 * a page register that controls bank and packet buffer access. We guard
940 * this with ei_local->page_lock. Nobody should assume or set the page other
941 * than zero when the lock is not held. Lock holders must restore page 0
942 * before unlocking. Even pure readers must take the lock to protect in
945 * To make life difficult the chip can also be very slow. We therefore can't
946 * just use spinlocks. For the longer lockups we disable the irq the device
947 * sits on and hold the lock. We must hold the lock because there is a dual
948 * processor case other than interrupts (get stats/set multicast list in
949 * parallel with each other and transmit).
951 * Note: in theory we can just disable the irq on the card _but_ there is
952 * a latency on SMP irq delivery. So we can easily go "disable irq" "sync irqs"
953 * enter lock, take the queued irq. So we waddle instead of flying.
955 * Finally by special arrangement for the purpose of being generally
956 * annoying the transmit function is called bh atomic. That places
957 * restrictions on the user context callers as disable_irq won't save
962 * ax_open - Open/initialize the board.
963 * @dev: network device to initialize
965 * This routine goes all-out, setting everything
966 * up anew at each open, even though many of these registers should only
967 * need to be set once at boot.
969 static int ax_open(struct net_device *dev)
972 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
975 * Grab the page lock so we own the register set, then call
979 spin_lock_irqsave(&ei_local->page_lock, flags);
980 AX88190_init(dev, 1);
981 /* Set the flag before we drop the lock, That way the IRQ arrives
982 after its set and we get no silly warnings */
983 netif_start_queue(dev);
984 spin_unlock_irqrestore(&ei_local->page_lock, flags);
985 ei_local->irqlock = 0;
989 #define dev_lock(dev) (((struct ei_device *)netdev_priv(dev))->page_lock)
992 * ax_close - shut down network device
993 * @dev: network device to close
995 * Opposite of ax_open(). Only used when "ifconfig <devname> down" is done.
997 static int ax_close(struct net_device *dev)
1002 * Hold the page lock during close
1005 spin_lock_irqsave(&dev_lock(dev), flags);
1006 AX88190_init(dev, 0);
1007 spin_unlock_irqrestore(&dev_lock(dev), flags);
1008 netif_stop_queue(dev);
1013 * axnet_tx_timeout - handle transmit time out condition
1014 * @dev: network device which has apparently fallen asleep
1016 * Called by kernel when device never acknowledges a transmit has
1017 * completed (or failed) - i.e. never posted a Tx related interrupt.
1020 static void axnet_tx_timeout(struct net_device *dev)
1022 long e8390_base = dev->base_addr;
1023 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1024 int txsr, isr, tickssofar = jiffies - dev->trans_start;
1025 unsigned long flags;
1027 dev->stats.tx_errors++;
1029 spin_lock_irqsave(&ei_local->page_lock, flags);
1030 txsr = inb(e8390_base+EN0_TSR);
1031 isr = inb(e8390_base+EN0_ISR);
1032 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1034 printk(KERN_DEBUG "%s: Tx timed out, %s TSR=%#2x, ISR=%#2x, t=%d.\n",
1035 dev->name, (txsr & ENTSR_ABT) ? "excess collisions." :
1036 (isr) ? "lost interrupt?" : "cable problem?", txsr, isr, tickssofar);
1038 if (!isr && !dev->stats.tx_packets)
1040 /* The 8390 probably hasn't gotten on the cable yet. */
1041 ei_local->interface_num ^= 1; /* Try a different xcvr. */
1044 /* Ugly but a reset can be slow, yet must be protected */
1046 spin_lock_irqsave(&ei_local->page_lock, flags);
1048 /* Try to restart the card. Perhaps the user has fixed something. */
1050 AX88190_init(dev, 1);
1052 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1053 netif_wake_queue(dev);
1057 * axnet_start_xmit - begin packet transmission
1058 * @skb: packet to be sent
1059 * @dev: network device to which packet is sent
1061 * Sends a packet to an 8390 network device.
1064 static int axnet_start_xmit(struct sk_buff *skb, struct net_device *dev)
1066 long e8390_base = dev->base_addr;
1067 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1068 int length, send_length, output_page;
1069 unsigned long flags;
1070 u8 packet[ETH_ZLEN];
1072 netif_stop_queue(dev);
1076 /* Mask interrupts from the ethercard.
1077 SMP: We have to grab the lock here otherwise the IRQ handler
1078 on another CPU can flip window and race the IRQ mask set. We end
1079 up trashing the mcast filter not disabling irqs if we don't lock */
1081 spin_lock_irqsave(&ei_local->page_lock, flags);
1082 outb_p(0x00, e8390_base + EN0_IMR);
1083 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1086 * Slow phase with lock held.
1089 spin_lock_irqsave(&ei_local->page_lock, flags);
1091 ei_local->irqlock = 1;
1093 send_length = max(length, ETH_ZLEN);
1096 * We have two Tx slots available for use. Find the first free
1097 * slot, and then perform some sanity checks. With two Tx bufs,
1098 * you get very close to transmitting back-to-back packets. With
1099 * only one Tx buf, the transmitter sits idle while you reload the
1100 * card, leaving a substantial gap between each transmitted packet.
1103 if (ei_local->tx1 == 0)
1105 output_page = ei_local->tx_start_page;
1106 ei_local->tx1 = send_length;
1107 if (ei_debug && ei_local->tx2 > 0)
1108 printk(KERN_DEBUG "%s: idle transmitter tx2=%d, lasttx=%d, txing=%d.\n",
1109 dev->name, ei_local->tx2, ei_local->lasttx, ei_local->txing);
1111 else if (ei_local->tx2 == 0)
1113 output_page = ei_local->tx_start_page + TX_PAGES/2;
1114 ei_local->tx2 = send_length;
1115 if (ei_debug && ei_local->tx1 > 0)
1116 printk(KERN_DEBUG "%s: idle transmitter, tx1=%d, lasttx=%d, txing=%d.\n",
1117 dev->name, ei_local->tx1, ei_local->lasttx, ei_local->txing);
1120 { /* We should never get here. */
1122 printk(KERN_DEBUG "%s: No Tx buffers free! tx1=%d tx2=%d last=%d\n",
1123 dev->name, ei_local->tx1, ei_local->tx2, ei_local->lasttx);
1124 ei_local->irqlock = 0;
1125 netif_stop_queue(dev);
1126 outb_p(ENISR_ALL, e8390_base + EN0_IMR);
1127 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1128 dev->stats.tx_errors++;
1133 * Okay, now upload the packet and trigger a send if the transmitter
1134 * isn't already sending. If it is busy, the interrupt handler will
1135 * trigger the send later, upon receiving a Tx done interrupt.
1138 if (length == skb->len)
1139 ei_block_output(dev, length, skb->data, output_page);
1141 memset(packet, 0, ETH_ZLEN);
1142 skb_copy_from_linear_data(skb, packet, skb->len);
1143 ei_block_output(dev, length, packet, output_page);
1146 if (! ei_local->txing)
1148 ei_local->txing = 1;
1149 NS8390_trigger_send(dev, send_length, output_page);
1150 dev->trans_start = jiffies;
1151 if (output_page == ei_local->tx_start_page)
1154 ei_local->lasttx = -1;
1159 ei_local->lasttx = -2;
1162 else ei_local->txqueue++;
1164 if (ei_local->tx1 && ei_local->tx2)
1165 netif_stop_queue(dev);
1167 netif_start_queue(dev);
1169 /* Turn 8390 interrupts back on. */
1170 ei_local->irqlock = 0;
1171 outb_p(ENISR_ALL, e8390_base + EN0_IMR);
1173 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1175 dev_kfree_skb (skb);
1176 dev->stats.tx_bytes += send_length;
1182 * ax_interrupt - handle the interrupts from an 8390
1183 * @irq: interrupt number
1184 * @dev_id: a pointer to the net_device
1186 * Handle the ether interface interrupts. We pull packets from
1187 * the 8390 via the card specific functions and fire them at the networking
1188 * stack. We also handle transmit completions and wake the transmit path if
1189 * necessary. We also update the counters and do other housekeeping as
1193 static irqreturn_t ax_interrupt(int irq, void *dev_id)
1195 struct net_device *dev = dev_id;
1197 int interrupts, nr_serviced = 0, i;
1198 struct ei_device *ei_local;
1201 e8390_base = dev->base_addr;
1202 ei_local = netdev_priv(dev);
1205 * Protect the irq test too.
1208 spin_lock(&ei_local->page_lock);
1210 if (ei_local->irqlock)
1212 #if 1 /* This might just be an interrupt for a PCI device sharing this line */
1213 /* The "irqlock" check is only for testing. */
1214 printk(ei_local->irqlock
1215 ? "%s: Interrupted while interrupts are masked! isr=%#2x imr=%#2x.\n"
1216 : "%s: Reentering the interrupt handler! isr=%#2x imr=%#2x.\n",
1217 dev->name, inb_p(e8390_base + EN0_ISR),
1218 inb_p(e8390_base + EN0_IMR));
1220 spin_unlock(&ei_local->page_lock);
1225 printk(KERN_DEBUG "%s: interrupt(isr=%#2.2x).\n", dev->name,
1226 inb_p(e8390_base + EN0_ISR));
1228 outb_p(0x00, e8390_base + EN0_ISR);
1229 ei_local->irqlock = 1;
1231 /* !!Assumption!! -- we stay in page 0. Don't break this. */
1232 while ((interrupts = inb_p(e8390_base + EN0_ISR)) != 0
1233 && ++nr_serviced < MAX_SERVICE)
1235 if (!netif_running(dev) || (interrupts == 0xff)) {
1237 printk(KERN_WARNING "%s: interrupt from stopped card\n", dev->name);
1238 outb_p(interrupts, e8390_base + EN0_ISR);
1244 /* AX88190 bug fix. */
1245 outb_p(interrupts, e8390_base + EN0_ISR);
1246 for (i = 0; i < 10; i++) {
1247 if (!(inb(e8390_base + EN0_ISR) & interrupts))
1249 outb_p(0, e8390_base + EN0_ISR);
1250 outb_p(interrupts, e8390_base + EN0_ISR);
1252 if (interrupts & ENISR_OVER)
1254 else if (interrupts & (ENISR_RX+ENISR_RX_ERR))
1256 /* Got a good (?) packet. */
1259 /* Push the next to-transmit packet through. */
1260 if (interrupts & ENISR_TX)
1262 else if (interrupts & ENISR_TX_ERR)
1265 if (interrupts & ENISR_COUNTERS)
1267 dev->stats.rx_frame_errors += inb_p(e8390_base + EN0_COUNTER0);
1268 dev->stats.rx_crc_errors += inb_p(e8390_base + EN0_COUNTER1);
1269 dev->stats.rx_missed_errors+= inb_p(e8390_base + EN0_COUNTER2);
1273 if (interrupts && ei_debug > 3)
1276 if (nr_serviced >= MAX_SERVICE)
1278 /* 0xFF is valid for a card removal */
1279 if(interrupts!=0xFF)
1280 printk(KERN_WARNING "%s: Too much work at interrupt, status %#2.2x\n",
1281 dev->name, interrupts);
1282 outb_p(ENISR_ALL, e8390_base + EN0_ISR); /* Ack. most intrs. */
1284 printk(KERN_WARNING "%s: unknown interrupt %#2x\n", dev->name, interrupts);
1285 outb_p(0xff, e8390_base + EN0_ISR); /* Ack. all intrs. */
1289 /* Turn 8390 interrupts back on. */
1290 ei_local->irqlock = 0;
1291 outb_p(ENISR_ALL, e8390_base + EN0_IMR);
1293 spin_unlock(&ei_local->page_lock);
1294 return IRQ_RETVAL(handled);
1298 * ei_tx_err - handle transmitter error
1299 * @dev: network device which threw the exception
1301 * A transmitter error has happened. Most likely excess collisions (which
1302 * is a fairly normal condition). If the error is one where the Tx will
1303 * have been aborted, we try and send another one right away, instead of
1304 * letting the failed packet sit and collect dust in the Tx buffer. This
1305 * is a much better solution as it avoids kernel based Tx timeouts, and
1306 * an unnecessary card reset.
1308 * Called with lock held.
1311 static void ei_tx_err(struct net_device *dev)
1313 long e8390_base = dev->base_addr;
1314 unsigned char txsr = inb_p(e8390_base+EN0_TSR);
1315 unsigned char tx_was_aborted = txsr & (ENTSR_ABT+ENTSR_FU);
1317 #ifdef VERBOSE_ERROR_DUMP
1318 printk(KERN_DEBUG "%s: transmitter error (%#2x): ", dev->name, txsr);
1319 if (txsr & ENTSR_ABT)
1320 printk("excess-collisions ");
1321 if (txsr & ENTSR_ND)
1322 printk("non-deferral ");
1323 if (txsr & ENTSR_CRS)
1324 printk("lost-carrier ");
1325 if (txsr & ENTSR_FU)
1326 printk("FIFO-underrun ");
1327 if (txsr & ENTSR_CDH)
1328 printk("lost-heartbeat ");
1336 dev->stats.tx_errors++;
1337 if (txsr & ENTSR_CRS) dev->stats.tx_carrier_errors++;
1338 if (txsr & ENTSR_CDH) dev->stats.tx_heartbeat_errors++;
1339 if (txsr & ENTSR_OWC) dev->stats.tx_window_errors++;
1344 * ei_tx_intr - transmit interrupt handler
1345 * @dev: network device for which tx intr is handled
1347 * We have finished a transmit: check for errors and then trigger the next
1348 * packet to be sent. Called with lock held.
1351 static void ei_tx_intr(struct net_device *dev)
1353 long e8390_base = dev->base_addr;
1354 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1355 int status = inb(e8390_base + EN0_TSR);
1358 * There are two Tx buffers, see which one finished, and trigger
1359 * the send of another one if it exists.
1361 ei_local->txqueue--;
1363 if (ei_local->tx1 < 0)
1365 if (ei_local->lasttx != 1 && ei_local->lasttx != -1)
1366 printk(KERN_ERR "%s: bogus last_tx_buffer %d, tx1=%d.\n",
1367 ei_local->name, ei_local->lasttx, ei_local->tx1);
1369 if (ei_local->tx2 > 0)
1371 ei_local->txing = 1;
1372 NS8390_trigger_send(dev, ei_local->tx2, ei_local->tx_start_page + 6);
1373 dev->trans_start = jiffies;
1375 ei_local->lasttx = 2;
1377 else ei_local->lasttx = 20, ei_local->txing = 0;
1379 else if (ei_local->tx2 < 0)
1381 if (ei_local->lasttx != 2 && ei_local->lasttx != -2)
1382 printk("%s: bogus last_tx_buffer %d, tx2=%d.\n",
1383 ei_local->name, ei_local->lasttx, ei_local->tx2);
1385 if (ei_local->tx1 > 0)
1387 ei_local->txing = 1;
1388 NS8390_trigger_send(dev, ei_local->tx1, ei_local->tx_start_page);
1389 dev->trans_start = jiffies;
1391 ei_local->lasttx = 1;
1394 ei_local->lasttx = 10, ei_local->txing = 0;
1396 // else printk(KERN_WARNING "%s: unexpected TX-done interrupt, lasttx=%d.\n",
1397 // dev->name, ei_local->lasttx);
1399 /* Minimize Tx latency: update the statistics after we restart TXing. */
1400 if (status & ENTSR_COL)
1401 dev->stats.collisions++;
1402 if (status & ENTSR_PTX)
1403 dev->stats.tx_packets++;
1406 dev->stats.tx_errors++;
1407 if (status & ENTSR_ABT)
1409 dev->stats.tx_aborted_errors++;
1410 dev->stats.collisions += 16;
1412 if (status & ENTSR_CRS)
1413 dev->stats.tx_carrier_errors++;
1414 if (status & ENTSR_FU)
1415 dev->stats.tx_fifo_errors++;
1416 if (status & ENTSR_CDH)
1417 dev->stats.tx_heartbeat_errors++;
1418 if (status & ENTSR_OWC)
1419 dev->stats.tx_window_errors++;
1421 netif_wake_queue(dev);
1425 * ei_receive - receive some packets
1426 * @dev: network device with which receive will be run
1428 * We have a good packet(s), get it/them out of the buffers.
1429 * Called with lock held.
1432 static void ei_receive(struct net_device *dev)
1434 long e8390_base = dev->base_addr;
1435 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1436 unsigned char rxing_page, this_frame, next_frame;
1437 unsigned short current_offset;
1438 int rx_pkt_count = 0;
1439 struct e8390_pkt_hdr rx_frame;
1441 while (++rx_pkt_count < 10)
1443 int pkt_len, pkt_stat;
1445 /* Get the rx page (incoming packet pointer). */
1446 rxing_page = inb_p(e8390_base + EN1_CURPAG -1);
1448 /* Remove one frame from the ring. Boundary is always a page behind. */
1449 this_frame = inb_p(e8390_base + EN0_BOUNDARY) + 1;
1450 if (this_frame >= ei_local->stop_page)
1451 this_frame = ei_local->rx_start_page;
1453 /* Someday we'll omit the previous, iff we never get this message.
1454 (There is at least one clone claimed to have a problem.)
1456 Keep quiet if it looks like a card removal. One problem here
1457 is that some clones crash in roughly the same way.
1459 if (ei_debug > 0 && this_frame != ei_local->current_page && (this_frame!=0x0 || rxing_page!=0xFF))
1460 printk(KERN_ERR "%s: mismatched read page pointers %2x vs %2x.\n",
1461 dev->name, this_frame, ei_local->current_page);
1463 if (this_frame == rxing_page) /* Read all the frames? */
1464 break; /* Done for now */
1466 current_offset = this_frame << 8;
1467 ei_get_8390_hdr(dev, &rx_frame, this_frame);
1469 pkt_len = rx_frame.count - sizeof(struct e8390_pkt_hdr);
1470 pkt_stat = rx_frame.status;
1472 next_frame = this_frame + 1 + ((pkt_len+4)>>8);
1474 if (pkt_len < 60 || pkt_len > 1518)
1477 printk(KERN_DEBUG "%s: bogus packet size: %d, status=%#2x nxpg=%#2x.\n",
1478 dev->name, rx_frame.count, rx_frame.status,
1480 dev->stats.rx_errors++;
1481 dev->stats.rx_length_errors++;
1483 else if ((pkt_stat & 0x0F) == ENRSR_RXOK)
1485 struct sk_buff *skb;
1487 skb = dev_alloc_skb(pkt_len+2);
1491 printk(KERN_DEBUG "%s: Couldn't allocate a sk_buff of size %d.\n",
1492 dev->name, pkt_len);
1493 dev->stats.rx_dropped++;
1498 skb_reserve(skb,2); /* IP headers on 16 byte boundaries */
1499 skb_put(skb, pkt_len); /* Make room */
1500 ei_block_input(dev, pkt_len, skb, current_offset + sizeof(rx_frame));
1501 skb->protocol=eth_type_trans(skb,dev);
1503 dev->stats.rx_packets++;
1504 dev->stats.rx_bytes += pkt_len;
1505 if (pkt_stat & ENRSR_PHY)
1506 dev->stats.multicast++;
1512 printk(KERN_DEBUG "%s: bogus packet: status=%#2x nxpg=%#2x size=%d\n",
1513 dev->name, rx_frame.status, rx_frame.next,
1515 dev->stats.rx_errors++;
1516 /* NB: The NIC counts CRC, frame and missed errors. */
1517 if (pkt_stat & ENRSR_FO)
1518 dev->stats.rx_fifo_errors++;
1520 next_frame = rx_frame.next;
1522 /* This _should_ never happen: it's here for avoiding bad clones. */
1523 if (next_frame >= ei_local->stop_page) {
1524 printk("%s: next frame inconsistency, %#2x\n", dev->name,
1526 next_frame = ei_local->rx_start_page;
1528 ei_local->current_page = next_frame;
1529 outb_p(next_frame-1, e8390_base+EN0_BOUNDARY);
1536 * ei_rx_overrun - handle receiver overrun
1537 * @dev: network device which threw exception
1539 * We have a receiver overrun: we have to kick the 8390 to get it started
1540 * again. Problem is that you have to kick it exactly as NS prescribes in
1541 * the updated datasheets, or "the NIC may act in an unpredictable manner."
1542 * This includes causing "the NIC to defer indefinitely when it is stopped
1543 * on a busy network." Ugh.
1544 * Called with lock held. Don't call this with the interrupts off or your
1545 * computer will hate you - it takes 10ms or so.
1548 static void ei_rx_overrun(struct net_device *dev)
1550 axnet_dev_t *info = PRIV(dev);
1551 long e8390_base = dev->base_addr;
1552 unsigned char was_txing, must_resend = 0;
1555 * Record whether a Tx was in progress and then issue the
1558 was_txing = inb_p(e8390_base+E8390_CMD) & E8390_TRANS;
1559 outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD);
1562 printk(KERN_DEBUG "%s: Receiver overrun.\n", dev->name);
1563 dev->stats.rx_over_errors++;
1566 * Wait a full Tx time (1.2ms) + some guard time, NS says 1.6ms total.
1567 * Early datasheets said to poll the reset bit, but now they say that
1568 * it "is not a reliable indicator and subsequently should be ignored."
1569 * We wait at least 10ms.
1575 * Reset RBCR[01] back to zero as per magic incantation.
1577 outb_p(0x00, e8390_base+EN0_RCNTLO);
1578 outb_p(0x00, e8390_base+EN0_RCNTHI);
1581 * See if any Tx was interrupted or not. According to NS, this
1582 * step is vital, and skipping it will cause no end of havoc.
1587 unsigned char tx_completed = inb_p(e8390_base+EN0_ISR) & (ENISR_TX+ENISR_TX_ERR);
1593 * Have to enter loopback mode and then restart the NIC before
1594 * you are allowed to slurp packets up off the ring.
1596 outb_p(E8390_TXOFF, e8390_base + EN0_TXCR);
1597 outb_p(E8390_NODMA + E8390_PAGE0 + E8390_START, e8390_base + E8390_CMD);
1600 * Clear the Rx ring of all the debris, and ack the interrupt.
1605 * Leave loopback mode, and resend any packet that got stopped.
1607 outb_p(E8390_TXCONFIG | info->duplex_flag, e8390_base + EN0_TXCR);
1609 outb_p(E8390_NODMA + E8390_PAGE0 + E8390_START + E8390_TRANS, e8390_base + E8390_CMD);
1613 * Collect the stats. This is called unlocked and from several contexts.
1616 static struct net_device_stats *get_stats(struct net_device *dev)
1618 long ioaddr = dev->base_addr;
1619 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1620 unsigned long flags;
1622 /* If the card is stopped, just return the present stats. */
1623 if (!netif_running(dev))
1626 spin_lock_irqsave(&ei_local->page_lock,flags);
1627 /* Read the counter registers, assuming we are in page 0. */
1628 dev->stats.rx_frame_errors += inb_p(ioaddr + EN0_COUNTER0);
1629 dev->stats.rx_crc_errors += inb_p(ioaddr + EN0_COUNTER1);
1630 dev->stats.rx_missed_errors+= inb_p(ioaddr + EN0_COUNTER2);
1631 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1637 * Form the 64 bit 8390 multicast table from the linked list of addresses
1638 * associated with this dev structure.
1641 static inline void make_mc_bits(u8 *bits, struct net_device *dev)
1643 struct dev_mc_list *dmi;
1646 for (dmi=dev->mc_list; dmi; dmi=dmi->next) {
1648 crc = ether_crc(ETH_ALEN, dmi->dmi_addr);
1650 * The 8390 uses the 6 most significant bits of the
1651 * CRC to index the multicast table.
1653 bits[crc>>29] |= (1<<((crc>>26)&7));
1658 * do_set_multicast_list - set/clear multicast filter
1659 * @dev: net device for which multicast filter is adjusted
1661 * Set or clear the multicast filter for this adaptor.
1662 * Must be called with lock held.
1665 static void do_set_multicast_list(struct net_device *dev)
1667 long e8390_base = dev->base_addr;
1669 struct ei_device *ei_local = (struct ei_device*)netdev_priv(dev);
1671 if (!(dev->flags&(IFF_PROMISC|IFF_ALLMULTI))) {
1672 memset(ei_local->mcfilter, 0, 8);
1674 make_mc_bits(ei_local->mcfilter, dev);
1676 /* set to accept-all */
1677 memset(ei_local->mcfilter, 0xFF, 8);
1680 outb_p(E8390_NODMA + E8390_PAGE1, e8390_base + E8390_CMD);
1681 for(i = 0; i < 8; i++)
1683 outb_p(ei_local->mcfilter[i], e8390_base + EN1_MULT_SHIFT(i));
1685 outb_p(E8390_NODMA + E8390_PAGE0, e8390_base + E8390_CMD);
1687 if(dev->flags&IFF_PROMISC)
1688 outb_p(E8390_RXCONFIG | 0x58, e8390_base + EN0_RXCR);
1689 else if(dev->flags&IFF_ALLMULTI || dev->mc_list)
1690 outb_p(E8390_RXCONFIG | 0x48, e8390_base + EN0_RXCR);
1692 outb_p(E8390_RXCONFIG | 0x40, e8390_base + EN0_RXCR);
1694 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, e8390_base+E8390_CMD);
1698 * Called without lock held. This is invoked from user context and may
1699 * be parallel to just about everything else. Its also fairly quick and
1700 * not called too often. Must protect against both bh and irq users
1703 static void set_multicast_list(struct net_device *dev)
1705 unsigned long flags;
1707 spin_lock_irqsave(&dev_lock(dev), flags);
1708 do_set_multicast_list(dev);
1709 spin_unlock_irqrestore(&dev_lock(dev), flags);
1712 /* This page of functions should be 8390 generic */
1713 /* Follow National Semi's recommendations for initializing the "NIC". */
1716 * AX88190_init - initialize 8390 hardware
1717 * @dev: network device to initialize
1718 * @startp: boolean. non-zero value to initiate chip processing
1720 * Must be called with lock held.
1723 static void AX88190_init(struct net_device *dev, int startp)
1725 axnet_dev_t *info = PRIV(dev);
1726 long e8390_base = dev->base_addr;
1727 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1729 int endcfg = ei_local->word16 ? (0x48 | ENDCFG_WTS) : 0x48;
1731 if(sizeof(struct e8390_pkt_hdr)!=4)
1732 panic("8390.c: header struct mispacked\n");
1733 /* Follow National Semi's recommendations for initing the DP83902. */
1734 outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD); /* 0x21 */
1735 outb_p(endcfg, e8390_base + EN0_DCFG); /* 0x48 or 0x49 */
1736 /* Clear the remote byte count registers. */
1737 outb_p(0x00, e8390_base + EN0_RCNTLO);
1738 outb_p(0x00, e8390_base + EN0_RCNTHI);
1739 /* Set to monitor and loopback mode -- this is vital!. */
1740 outb_p(E8390_RXOFF|0x40, e8390_base + EN0_RXCR); /* 0x60 */
1741 outb_p(E8390_TXOFF, e8390_base + EN0_TXCR); /* 0x02 */
1742 /* Set the transmit page and receive ring. */
1743 outb_p(ei_local->tx_start_page, e8390_base + EN0_TPSR);
1744 ei_local->tx1 = ei_local->tx2 = 0;
1745 outb_p(ei_local->rx_start_page, e8390_base + EN0_STARTPG);
1746 outb_p(ei_local->stop_page-1, e8390_base + EN0_BOUNDARY); /* 3c503 says 0x3f,NS0x26*/
1747 ei_local->current_page = ei_local->rx_start_page; /* assert boundary+1 */
1748 outb_p(ei_local->stop_page, e8390_base + EN0_STOPPG);
1749 /* Clear the pending interrupts and mask. */
1750 outb_p(0xFF, e8390_base + EN0_ISR);
1751 outb_p(0x00, e8390_base + EN0_IMR);
1753 /* Copy the station address into the DS8390 registers. */
1755 outb_p(E8390_NODMA + E8390_PAGE1 + E8390_STOP, e8390_base+E8390_CMD); /* 0x61 */
1756 for(i = 0; i < 6; i++)
1758 outb_p(dev->dev_addr[i], e8390_base + EN1_PHYS_SHIFT(i));
1759 if(inb_p(e8390_base + EN1_PHYS_SHIFT(i))!=dev->dev_addr[i])
1760 printk(KERN_ERR "Hw. address read/write mismap %d\n",i);
1763 outb_p(ei_local->rx_start_page, e8390_base + EN1_CURPAG);
1764 outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD);
1766 netif_start_queue(dev);
1767 ei_local->tx1 = ei_local->tx2 = 0;
1768 ei_local->txing = 0;
1772 outb_p(0xff, e8390_base + EN0_ISR);
1773 outb_p(ENISR_ALL, e8390_base + EN0_IMR);
1774 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, e8390_base+E8390_CMD);
1775 outb_p(E8390_TXCONFIG | info->duplex_flag,
1776 e8390_base + EN0_TXCR); /* xmit on. */
1777 /* 3c503 TechMan says rxconfig only after the NIC is started. */
1778 outb_p(E8390_RXCONFIG | 0x40, e8390_base + EN0_RXCR); /* rx on, */
1779 do_set_multicast_list(dev); /* (re)load the mcast table */
1783 /* Trigger a transmit start, assuming the length is valid.
1784 Always called with the page lock held */
1786 static void NS8390_trigger_send(struct net_device *dev, unsigned int length,
1789 long e8390_base = dev->base_addr;
1790 struct ei_device *ei_local __attribute((unused)) = (struct ei_device *) netdev_priv(dev);
1792 if (inb_p(e8390_base) & E8390_TRANS)
1794 printk(KERN_WARNING "%s: trigger_send() called with the transmitter busy.\n",
1798 outb_p(length & 0xff, e8390_base + EN0_TCNTLO);
1799 outb_p(length >> 8, e8390_base + EN0_TCNTHI);
1800 outb_p(start_page, e8390_base + EN0_TPSR);
1801 outb_p(E8390_NODMA+E8390_TRANS+E8390_START, e8390_base+E8390_CMD);