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/string.h>
32 #include <linux/timer.h>
33 #include <linux/delay.h>
34 #include <linux/spinlock.h>
35 #include <linux/ethtool.h>
36 #include <linux/netdevice.h>
37 #include <linux/etherdevice.h>
38 #include <linux/crc32.h>
39 #include <linux/mii.h>
42 #include <pcmcia/cistpl.h>
43 #include <pcmcia/ciscode.h>
44 #include <pcmcia/ds.h>
45 #include <pcmcia/cisreg.h>
48 #include <asm/system.h>
49 #include <asm/byteorder.h>
50 #include <asm/uaccess.h>
52 #define AXNET_CMD 0x00
53 #define AXNET_DATAPORT 0x10 /* NatSemi-defined port window offset. */
54 #define AXNET_RESET 0x1f /* Issue a read to reset, a write to clear. */
55 #define AXNET_MII_EEP 0x14 /* Offset of MII access port */
56 #define AXNET_TEST 0x15 /* Offset of TEST Register port */
57 #define AXNET_GPIO 0x17 /* Offset of General Purpose Register Port */
59 #define AXNET_START_PG 0x40 /* First page of TX buffer */
60 #define AXNET_STOP_PG 0x80 /* Last page +1 of RX ring */
62 #define AXNET_RDC_TIMEOUT 0x02 /* Max wait in jiffies for Tx RDC */
64 #define IS_AX88190 0x0001
65 #define IS_AX88790 0x0002
67 /*====================================================================*/
69 /* Module parameters */
71 MODULE_AUTHOR("David Hinds <dahinds@users.sourceforge.net>");
72 MODULE_DESCRIPTION("Asix AX88190 PCMCIA ethernet driver");
73 MODULE_LICENSE("GPL");
76 /*====================================================================*/
78 static int axnet_config(struct pcmcia_device *link);
79 static void axnet_release(struct pcmcia_device *link);
80 static int axnet_open(struct net_device *dev);
81 static int axnet_close(struct net_device *dev);
82 static int axnet_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
83 static netdev_tx_t axnet_start_xmit(struct sk_buff *skb,
84 struct net_device *dev);
85 static struct net_device_stats *get_stats(struct net_device *dev);
86 static void set_multicast_list(struct net_device *dev);
87 static void axnet_tx_timeout(struct net_device *dev);
88 static const struct ethtool_ops netdev_ethtool_ops;
89 static irqreturn_t ei_irq_wrapper(int irq, void *dev_id);
90 static void ei_watchdog(u_long arg);
91 static void axnet_reset_8390(struct net_device *dev);
93 static int mdio_read(unsigned int addr, int phy_id, int loc);
94 static void mdio_write(unsigned int addr, int phy_id, int loc, int value);
96 static void get_8390_hdr(struct net_device *,
97 struct e8390_pkt_hdr *, int);
98 static void block_input(struct net_device *dev, int count,
99 struct sk_buff *skb, int ring_offset);
100 static void block_output(struct net_device *dev, int count,
101 const u_char *buf, const int start_page);
103 static void axnet_detach(struct pcmcia_device *p_dev);
105 static void AX88190_init(struct net_device *dev, int startp);
106 static int ax_open(struct net_device *dev);
107 static int ax_close(struct net_device *dev);
108 static irqreturn_t ax_interrupt(int irq, void *dev_id);
110 /*====================================================================*/
112 typedef struct axnet_dev_t {
113 struct pcmcia_device *p_dev;
115 struct timer_list watchdog;
116 int stale, fast_poll;
123 static inline axnet_dev_t *PRIV(struct net_device *dev)
125 void *p = (char *)netdev_priv(dev) + sizeof(struct ei_device);
129 static const struct net_device_ops axnet_netdev_ops = {
130 .ndo_open = axnet_open,
131 .ndo_stop = axnet_close,
132 .ndo_do_ioctl = axnet_ioctl,
133 .ndo_start_xmit = axnet_start_xmit,
134 .ndo_tx_timeout = axnet_tx_timeout,
135 .ndo_get_stats = get_stats,
136 .ndo_set_multicast_list = set_multicast_list,
137 .ndo_change_mtu = eth_change_mtu,
138 .ndo_set_mac_address = eth_mac_addr,
139 .ndo_validate_addr = eth_validate_addr,
142 static int axnet_probe(struct pcmcia_device *link)
145 struct net_device *dev;
146 struct ei_device *ei_local;
148 dev_dbg(&link->dev, "axnet_attach()\n");
150 dev = alloc_etherdev(sizeof(struct ei_device) + sizeof(axnet_dev_t));
154 ei_local = netdev_priv(dev);
155 spin_lock_init(&ei_local->page_lock);
160 link->config_flags |= CONF_ENABLE_IRQ;
162 dev->netdev_ops = &axnet_netdev_ops;
164 SET_ETHTOOL_OPS(dev, &netdev_ethtool_ops);
165 dev->watchdog_timeo = TX_TIMEOUT;
167 return axnet_config(link);
170 static void axnet_detach(struct pcmcia_device *link)
172 struct net_device *dev = link->priv;
174 dev_dbg(&link->dev, "axnet_detach(0x%p)\n", link);
176 unregister_netdev(dev);
183 /*======================================================================
185 This probes for a card's hardware address by reading the PROM.
187 ======================================================================*/
189 static int get_prom(struct pcmcia_device *link)
191 struct net_device *dev = link->priv;
192 unsigned int ioaddr = dev->base_addr;
195 /* This is based on drivers/net/ne.c */
197 u_char value, offset;
199 {E8390_NODMA+E8390_PAGE0+E8390_STOP, E8390_CMD}, /* Select page 0*/
200 {0x01, EN0_DCFG}, /* Set word-wide access. */
201 {0x00, EN0_RCNTLO}, /* Clear the count regs. */
203 {0x00, EN0_IMR}, /* Mask completion irq. */
205 {E8390_RXOFF|0x40, EN0_RXCR}, /* 0x60 Set to monitor */
206 {E8390_TXOFF, EN0_TXCR}, /* 0x02 and loopback mode. */
209 {0x00, EN0_RSARLO}, /* DMA starting at 0x0400. */
211 {E8390_RREAD+E8390_START, E8390_CMD},
214 /* Not much of a test, but the alternatives are messy */
215 if (link->config_base != 0x03c0)
218 axnet_reset_8390(dev);
221 for (i = 0; i < ARRAY_SIZE(program_seq); i++)
222 outb_p(program_seq[i].value, ioaddr + program_seq[i].offset);
224 for (i = 0; i < 6; i += 2) {
225 j = inw(ioaddr + AXNET_DATAPORT);
226 dev->dev_addr[i] = j & 0xff;
227 dev->dev_addr[i+1] = j >> 8;
232 static int try_io_port(struct pcmcia_device *link)
235 link->resource[0]->flags &= ~IO_DATA_PATH_WIDTH;
236 link->resource[1]->flags &= ~IO_DATA_PATH_WIDTH;
237 if (link->resource[0]->end == 32) {
238 link->resource[0]->flags |= IO_DATA_PATH_WIDTH_AUTO;
239 /* for master/slave multifunction cards */
240 if (link->resource[1]->end > 0)
241 link->resource[1]->flags |= IO_DATA_PATH_WIDTH_8;
243 /* This should be two 16-port windows */
244 link->resource[0]->flags |= IO_DATA_PATH_WIDTH_8;
245 link->resource[1]->flags |= IO_DATA_PATH_WIDTH_16;
247 if (link->resource[0]->start == 0) {
248 for (j = 0; j < 0x400; j += 0x20) {
249 link->resource[0]->start = j ^ 0x300;
250 link->resource[1]->start = (j ^ 0x300) + 0x10;
252 ret = pcmcia_request_io(link);
258 return pcmcia_request_io(link);
262 static int axnet_configcheck(struct pcmcia_device *p_dev, void *priv_data)
264 if (p_dev->config_index == 0)
267 p_dev->config_index = 0x05;
268 if (p_dev->resource[0]->end + p_dev->resource[1]->end < 32)
271 return try_io_port(p_dev);
274 static int axnet_config(struct pcmcia_device *link)
276 struct net_device *dev = link->priv;
277 axnet_dev_t *info = PRIV(dev);
280 dev_dbg(&link->dev, "axnet_config(0x%p)\n", link);
282 /* don't trust the CIS on this; Linksys got it wrong */
283 link->config_regs = 0x63;
284 link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_IO;
285 ret = pcmcia_loop_config(link, axnet_configcheck, NULL);
292 if (resource_size(link->resource[1]) == 8)
293 link->config_flags |= CONF_ENABLE_SPKR;
295 ret = pcmcia_enable_device(link);
299 dev->irq = link->irq;
300 dev->base_addr = link->resource[0]->start;
302 if (!get_prom(link)) {
303 printk(KERN_NOTICE "axnet_cs: this is not an AX88190 card!\n");
304 printk(KERN_NOTICE "axnet_cs: use pcnet_cs instead.\n");
308 ei_status.name = "AX88190";
309 ei_status.word16 = 1;
310 ei_status.tx_start_page = AXNET_START_PG;
311 ei_status.rx_start_page = AXNET_START_PG + TX_PAGES;
312 ei_status.stop_page = AXNET_STOP_PG;
313 ei_status.reset_8390 = &axnet_reset_8390;
314 ei_status.get_8390_hdr = &get_8390_hdr;
315 ei_status.block_input = &block_input;
316 ei_status.block_output = &block_output;
318 if (inb(dev->base_addr + AXNET_TEST) != 0)
319 info->flags |= IS_AX88790;
321 info->flags |= IS_AX88190;
323 if (info->flags & IS_AX88790)
324 outb(0x10, dev->base_addr + AXNET_GPIO); /* select Internal PHY */
326 for (i = 0; i < 32; i++) {
327 j = mdio_read(dev->base_addr + AXNET_MII_EEP, i, 1);
328 j2 = mdio_read(dev->base_addr + AXNET_MII_EEP, i, 2);
329 if (j == j2) continue;
330 if ((j != 0) && (j != 0xffff)) break;
333 /* Maybe PHY is in power down mode. (PPD_SET = 1)
334 Bit 2 of CCSR is active low. */
336 pcmcia_write_config_byte(link, CISREG_CCSR, 0x04);
337 for (i = 0; i < 32; i++) {
338 j = mdio_read(dev->base_addr + AXNET_MII_EEP, i, 1);
339 j2 = mdio_read(dev->base_addr + AXNET_MII_EEP, i, 2);
340 if (j == j2) continue;
341 if ((j != 0) && (j != 0xffff)) break;
345 info->phy_id = (i < 32) ? i : -1;
346 SET_NETDEV_DEV(dev, &link->dev);
348 if (register_netdev(dev) != 0) {
349 printk(KERN_NOTICE "axnet_cs: register_netdev() failed\n");
353 printk(KERN_INFO "%s: Asix AX88%d90: io %#3lx, irq %d, "
355 dev->name, ((info->flags & IS_AX88790) ? 7 : 1),
356 dev->base_addr, dev->irq,
358 if (info->phy_id != -1) {
359 dev_dbg(&link->dev, " MII transceiver at index %d, status %x.\n", info->phy_id, j);
361 printk(KERN_NOTICE " No MII transceivers found!\n");
370 static void axnet_release(struct pcmcia_device *link)
372 pcmcia_disable_device(link);
375 static int axnet_suspend(struct pcmcia_device *link)
377 struct net_device *dev = link->priv;
380 netif_device_detach(dev);
385 static int axnet_resume(struct pcmcia_device *link)
387 struct net_device *dev = link->priv;
390 axnet_reset_8390(dev);
391 AX88190_init(dev, 1);
392 netif_device_attach(dev);
399 /*======================================================================
401 MII interface support
403 ======================================================================*/
405 #define MDIO_SHIFT_CLK 0x01
406 #define MDIO_DATA_WRITE0 0x00
407 #define MDIO_DATA_WRITE1 0x08
408 #define MDIO_DATA_READ 0x04
409 #define MDIO_MASK 0x0f
410 #define MDIO_ENB_IN 0x02
412 static void mdio_sync(unsigned int addr)
415 for (bits = 0; bits < 32; bits++) {
416 outb_p(MDIO_DATA_WRITE1, addr);
417 outb_p(MDIO_DATA_WRITE1 | MDIO_SHIFT_CLK, addr);
421 static int mdio_read(unsigned int addr, int phy_id, int loc)
423 u_int cmd = (0xf6<<10)|(phy_id<<5)|loc;
427 for (i = 14; i >= 0; i--) {
428 int dat = (cmd&(1<<i)) ? MDIO_DATA_WRITE1 : MDIO_DATA_WRITE0;
430 outb_p(dat | MDIO_SHIFT_CLK, addr);
432 for (i = 19; i > 0; i--) {
433 outb_p(MDIO_ENB_IN, addr);
434 retval = (retval << 1) | ((inb_p(addr) & MDIO_DATA_READ) != 0);
435 outb_p(MDIO_ENB_IN | MDIO_SHIFT_CLK, addr);
437 return (retval>>1) & 0xffff;
440 static void mdio_write(unsigned int addr, int phy_id, int loc, int value)
442 u_int cmd = (0x05<<28)|(phy_id<<23)|(loc<<18)|(1<<17)|value;
446 for (i = 31; i >= 0; i--) {
447 int dat = (cmd&(1<<i)) ? MDIO_DATA_WRITE1 : MDIO_DATA_WRITE0;
449 outb_p(dat | MDIO_SHIFT_CLK, addr);
451 for (i = 1; i >= 0; i--) {
452 outb_p(MDIO_ENB_IN, addr);
453 outb_p(MDIO_ENB_IN | MDIO_SHIFT_CLK, addr);
457 /*====================================================================*/
459 static int axnet_open(struct net_device *dev)
462 axnet_dev_t *info = PRIV(dev);
463 struct pcmcia_device *link = info->p_dev;
464 unsigned int nic_base = dev->base_addr;
466 dev_dbg(&link->dev, "axnet_open('%s')\n", dev->name);
468 if (!pcmcia_dev_present(link))
471 outb_p(0xFF, nic_base + EN0_ISR); /* Clear bogus intr. */
472 ret = request_irq(dev->irq, ei_irq_wrapper, IRQF_SHARED, "axnet_cs", dev);
478 info->link_status = 0x00;
479 init_timer(&info->watchdog);
480 info->watchdog.function = &ei_watchdog;
481 info->watchdog.data = (u_long)dev;
482 info->watchdog.expires = jiffies + HZ;
483 add_timer(&info->watchdog);
488 /*====================================================================*/
490 static int axnet_close(struct net_device *dev)
492 axnet_dev_t *info = PRIV(dev);
493 struct pcmcia_device *link = info->p_dev;
495 dev_dbg(&link->dev, "axnet_close('%s')\n", dev->name);
498 free_irq(dev->irq, dev);
501 netif_stop_queue(dev);
502 del_timer_sync(&info->watchdog);
507 /*======================================================================
509 Hard reset the card. This used to pause for the same period that
510 a 8390 reset command required, but that shouldn't be necessary.
512 ======================================================================*/
514 static void axnet_reset_8390(struct net_device *dev)
516 unsigned int nic_base = dev->base_addr;
519 ei_status.txing = ei_status.dmaing = 0;
521 outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, nic_base + E8390_CMD);
523 outb(inb(nic_base + AXNET_RESET), nic_base + AXNET_RESET);
525 for (i = 0; i < 100; i++) {
526 if ((inb_p(nic_base+EN0_ISR) & ENISR_RESET) != 0)
530 outb_p(ENISR_RESET, nic_base + EN0_ISR); /* Ack intr. */
533 printk(KERN_ERR "%s: axnet_reset_8390() did not complete.\n",
536 } /* axnet_reset_8390 */
538 /*====================================================================*/
540 static irqreturn_t ei_irq_wrapper(int irq, void *dev_id)
542 struct net_device *dev = dev_id;
543 PRIV(dev)->stale = 0;
544 return ax_interrupt(irq, dev_id);
547 static void ei_watchdog(u_long arg)
549 struct net_device *dev = (struct net_device *)(arg);
550 axnet_dev_t *info = PRIV(dev);
551 unsigned int nic_base = dev->base_addr;
552 unsigned int mii_addr = nic_base + AXNET_MII_EEP;
555 if (!netif_device_present(dev)) goto reschedule;
557 /* Check for pending interrupt with expired latency timer: with
558 this, we can limp along even if the interrupt is blocked */
559 if (info->stale++ && (inb_p(nic_base + EN0_ISR) & ENISR_ALL)) {
560 if (!info->fast_poll)
561 printk(KERN_INFO "%s: interrupt(s) dropped!\n", dev->name);
562 ei_irq_wrapper(dev->irq, dev);
563 info->fast_poll = HZ;
565 if (info->fast_poll) {
567 info->watchdog.expires = jiffies + 1;
568 add_timer(&info->watchdog);
572 if (info->phy_id < 0)
574 link = mdio_read(mii_addr, info->phy_id, 1);
575 if (!link || (link == 0xffff)) {
576 printk(KERN_INFO "%s: MII is missing!\n", dev->name);
582 if (link != info->link_status) {
583 u_short p = mdio_read(mii_addr, info->phy_id, 5);
584 printk(KERN_INFO "%s: %s link beat\n", dev->name,
585 (link) ? "found" : "lost");
587 info->duplex_flag = (p & 0x0140) ? 0x80 : 0x00;
589 printk(KERN_INFO "%s: autonegotiation complete: "
590 "%sbaseT-%cD selected\n", dev->name,
591 ((p & 0x0180) ? "100" : "10"),
592 ((p & 0x0140) ? 'F' : 'H'));
594 printk(KERN_INFO "%s: link partner did not autonegotiate\n",
596 AX88190_init(dev, 1);
598 info->link_status = link;
602 info->watchdog.expires = jiffies + HZ;
603 add_timer(&info->watchdog);
606 static void netdev_get_drvinfo(struct net_device *dev,
607 struct ethtool_drvinfo *info)
609 strcpy(info->driver, "axnet_cs");
612 static const struct ethtool_ops netdev_ethtool_ops = {
613 .get_drvinfo = netdev_get_drvinfo,
616 /*====================================================================*/
618 static int axnet_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
620 axnet_dev_t *info = PRIV(dev);
621 struct mii_ioctl_data *data = if_mii(rq);
622 unsigned int mii_addr = dev->base_addr + AXNET_MII_EEP;
625 data->phy_id = info->phy_id;
626 case SIOCGMIIREG: /* Read MII PHY register. */
627 data->val_out = mdio_read(mii_addr, data->phy_id, data->reg_num & 0x1f);
629 case SIOCSMIIREG: /* Write MII PHY register. */
630 mdio_write(mii_addr, data->phy_id, data->reg_num & 0x1f, data->val_in);
636 /*====================================================================*/
638 static void get_8390_hdr(struct net_device *dev,
639 struct e8390_pkt_hdr *hdr,
642 unsigned int nic_base = dev->base_addr;
644 outb_p(0, nic_base + EN0_RSARLO); /* On page boundary */
645 outb_p(ring_page, nic_base + EN0_RSARHI);
646 outb_p(E8390_RREAD+E8390_START, nic_base + AXNET_CMD);
648 insw(nic_base + AXNET_DATAPORT, hdr,
649 sizeof(struct e8390_pkt_hdr)>>1);
650 /* Fix for big endian systems */
651 hdr->count = le16_to_cpu(hdr->count);
655 /*====================================================================*/
657 static void block_input(struct net_device *dev, int count,
658 struct sk_buff *skb, int ring_offset)
660 unsigned int nic_base = dev->base_addr;
661 int xfer_count = count;
662 char *buf = skb->data;
664 if ((ei_debug > 4) && (count != 4))
665 pr_debug("%s: [bi=%d]\n", dev->name, count+4);
666 outb_p(ring_offset & 0xff, nic_base + EN0_RSARLO);
667 outb_p(ring_offset >> 8, nic_base + EN0_RSARHI);
668 outb_p(E8390_RREAD+E8390_START, nic_base + AXNET_CMD);
670 insw(nic_base + AXNET_DATAPORT,buf,count>>1);
672 buf[count-1] = inb(nic_base + AXNET_DATAPORT), xfer_count++;
676 /*====================================================================*/
678 static void block_output(struct net_device *dev, int count,
679 const u_char *buf, const int start_page)
681 unsigned int nic_base = dev->base_addr;
683 pr_debug("%s: [bo=%d]\n", dev->name, count);
685 /* Round the count up for word writes. Do we need to do this?
686 What effect will an odd byte count have on the 8390?
687 I should check someday. */
691 outb_p(0x00, nic_base + EN0_RSARLO);
692 outb_p(start_page, nic_base + EN0_RSARHI);
693 outb_p(E8390_RWRITE+E8390_START, nic_base + AXNET_CMD);
694 outsw(nic_base + AXNET_DATAPORT, buf, count>>1);
697 static struct pcmcia_device_id axnet_ids[] = {
698 PCMCIA_PFC_DEVICE_MANF_CARD(0, 0x016c, 0x0081),
699 PCMCIA_DEVICE_MANF_CARD(0x018a, 0x0301),
700 PCMCIA_DEVICE_MANF_CARD(0x026f, 0x0301),
701 PCMCIA_DEVICE_MANF_CARD(0x026f, 0x0303),
702 PCMCIA_DEVICE_MANF_CARD(0x026f, 0x0309),
703 PCMCIA_DEVICE_MANF_CARD(0x0274, 0x1106),
704 PCMCIA_DEVICE_MANF_CARD(0x8a01, 0xc1ab),
705 PCMCIA_DEVICE_MANF_CARD(0x021b, 0x0202),
706 PCMCIA_DEVICE_MANF_CARD(0xffff, 0x1090),
707 PCMCIA_DEVICE_PROD_ID12("AmbiCom,Inc.", "Fast Ethernet PC Card(AMB8110)", 0x49b020a7, 0x119cc9fc),
708 PCMCIA_DEVICE_PROD_ID124("Fast Ethernet", "16-bit PC Card", "AX88190", 0xb4be14e3, 0x9a12eb6a, 0xab9be5ef),
709 PCMCIA_DEVICE_PROD_ID12("ASIX", "AX88190", 0x0959823b, 0xab9be5ef),
710 PCMCIA_DEVICE_PROD_ID12("Billionton", "LNA-100B", 0x552ab682, 0xbc3b87e1),
711 PCMCIA_DEVICE_PROD_ID12("CHEETAH ETHERCARD", "EN2228", 0x00fa7bc8, 0x00e990cc),
712 PCMCIA_DEVICE_PROD_ID12("CNet", "CNF301", 0xbc477dde, 0x78c5f40b),
713 PCMCIA_DEVICE_PROD_ID12("corega K.K.", "corega FEther PCC-TXD", 0x5261440f, 0x436768c5),
714 PCMCIA_DEVICE_PROD_ID12("corega K.K.", "corega FEtherII PCC-TXD", 0x5261440f, 0x730df72e),
715 PCMCIA_DEVICE_PROD_ID12("corega K.K.", "corega FEther PCC-TXM", 0x5261440f, 0x3abbd061),
716 PCMCIA_DEVICE_PROD_ID12("Dynalink", "L100C16", 0x55632fd5, 0x66bc2a90),
717 PCMCIA_DEVICE_PROD_ID12("IO DATA", "ETXPCM", 0x547e66dc, 0x233adac2),
718 PCMCIA_DEVICE_PROD_ID12("Linksys", "EtherFast 10/100 PC Card (PCMPC100 V3)", 0x0733cc81, 0x232019a8),
719 PCMCIA_DEVICE_PROD_ID12("MELCO", "LPC3-TX", 0x481e0094, 0xf91af609),
720 PCMCIA_DEVICE_PROD_ID12("NETGEAR", "FA411", 0x9aa79dc3, 0x40fad875),
721 PCMCIA_DEVICE_PROD_ID12("PCMCIA", "100BASE", 0x281f1c5d, 0x7c2add04),
722 PCMCIA_DEVICE_PROD_ID12("PCMCIA", "FastEtherCard", 0x281f1c5d, 0x7ef26116),
723 PCMCIA_DEVICE_PROD_ID12("PCMCIA", "FEP501", 0x281f1c5d, 0x2e272058),
724 PCMCIA_DEVICE_PROD_ID14("Network Everywhere", "AX88190", 0x820a67b6, 0xab9be5ef),
727 MODULE_DEVICE_TABLE(pcmcia, axnet_ids);
729 static struct pcmcia_driver axnet_cs_driver = {
730 .owner = THIS_MODULE,
732 .probe = axnet_probe,
733 .remove = axnet_detach,
734 .id_table = axnet_ids,
735 .suspend = axnet_suspend,
736 .resume = axnet_resume,
739 static int __init init_axnet_cs(void)
741 return pcmcia_register_driver(&axnet_cs_driver);
744 static void __exit exit_axnet_cs(void)
746 pcmcia_unregister_driver(&axnet_cs_driver);
749 module_init(init_axnet_cs);
750 module_exit(exit_axnet_cs);
752 /*====================================================================*/
754 /* 8390.c: A general NS8390 ethernet driver core for linux. */
756 Written 1992-94 by Donald Becker.
758 Copyright 1993 United States Government as represented by the
759 Director, National Security Agency.
761 This software may be used and distributed according to the terms
762 of the GNU General Public License, incorporated herein by reference.
764 The author may be reached as becker@scyld.com, or C/O
765 Scyld Computing Corporation
766 410 Severn Ave., Suite 210
769 This is the chip-specific code for many 8390-based ethernet adaptors.
770 This is not a complete driver, it must be combined with board-specific
771 code such as ne.c, wd.c, 3c503.c, etc.
773 Seeing how at least eight drivers use this code, (not counting the
774 PCMCIA ones either) it is easy to break some card by what seems like
775 a simple innocent change. Please contact me or Donald if you think
776 you have found something that needs changing. -- PG
780 Paul Gortmaker : remove set_bit lock, other cleanups.
781 Paul Gortmaker : add ei_get_8390_hdr() so we can pass skb's to
782 ei_block_input() for eth_io_copy_and_sum().
783 Paul Gortmaker : exchange static int ei_pingpong for a #define,
784 also add better Tx error handling.
785 Paul Gortmaker : rewrite Rx overrun handling as per NS specs.
786 Alexey Kuznetsov : use the 8390's six bit hash multicast filter.
787 Paul Gortmaker : tweak ANK's above multicast changes a bit.
788 Paul Gortmaker : update packet statistics for v2.1.x
789 Alan Cox : support arbitary stupid port mappings on the
790 68K Macintosh. Support >16bit I/O spaces
791 Paul Gortmaker : add kmod support for auto-loading of the 8390
792 module by all drivers that require it.
793 Alan Cox : Spinlocking work, added 'BUG_83C690'
794 Paul Gortmaker : Separate out Tx timeout code from Tx path.
797 The National Semiconductor LAN Databook, and the 3Com 3c503 databook.
801 static const char version_8390[] = KERN_INFO \
802 "8390.c:v1.10cvs 9/23/94 Donald Becker (becker@scyld.com)\n";
804 #include <linux/bitops.h>
806 #include <linux/fcntl.h>
807 #include <linux/in.h>
808 #include <linux/interrupt.h>
812 /* These are the operational function interfaces to board-specific
814 void reset_8390(struct net_device *dev)
815 Resets the board associated with DEV, including a hardware reset of
816 the 8390. This is only called when there is a transmit timeout, and
817 it is always followed by 8390_init().
818 void block_output(struct net_device *dev, int count, const unsigned char *buf,
820 Write the COUNT bytes of BUF to the packet buffer at START_PAGE. The
821 "page" value uses the 8390's 256-byte pages.
822 void get_8390_hdr(struct net_device *dev, struct e8390_hdr *hdr, int ring_page)
823 Read the 4 byte, page aligned 8390 header. *If* there is a
824 subsequent read, it will be of the rest of the packet.
825 void block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset)
826 Read COUNT bytes from the packet buffer into the skb data area. Start
827 reading from RING_OFFSET, the address as the 8390 sees it. This will always
828 follow the read of the 8390 header.
830 #define ei_reset_8390 (ei_local->reset_8390)
831 #define ei_block_output (ei_local->block_output)
832 #define ei_block_input (ei_local->block_input)
833 #define ei_get_8390_hdr (ei_local->get_8390_hdr)
835 /* use 0 for production, 1 for verification, >2 for debug */
840 /* Index to functions. */
841 static void ei_tx_intr(struct net_device *dev);
842 static void ei_tx_err(struct net_device *dev);
843 static void ei_receive(struct net_device *dev);
844 static void ei_rx_overrun(struct net_device *dev);
846 /* Routines generic to NS8390-based boards. */
847 static void NS8390_trigger_send(struct net_device *dev, unsigned int length,
849 static void do_set_multicast_list(struct net_device *dev);
852 * SMP and the 8390 setup.
854 * The 8390 isnt exactly designed to be multithreaded on RX/TX. There is
855 * a page register that controls bank and packet buffer access. We guard
856 * this with ei_local->page_lock. Nobody should assume or set the page other
857 * than zero when the lock is not held. Lock holders must restore page 0
858 * before unlocking. Even pure readers must take the lock to protect in
861 * To make life difficult the chip can also be very slow. We therefore can't
862 * just use spinlocks. For the longer lockups we disable the irq the device
863 * sits on and hold the lock. We must hold the lock because there is a dual
864 * processor case other than interrupts (get stats/set multicast list in
865 * parallel with each other and transmit).
867 * Note: in theory we can just disable the irq on the card _but_ there is
868 * a latency on SMP irq delivery. So we can easily go "disable irq" "sync irqs"
869 * enter lock, take the queued irq. So we waddle instead of flying.
871 * Finally by special arrangement for the purpose of being generally
872 * annoying the transmit function is called bh atomic. That places
873 * restrictions on the user context callers as disable_irq won't save
878 * ax_open - Open/initialize the board.
879 * @dev: network device to initialize
881 * This routine goes all-out, setting everything
882 * up anew at each open, even though many of these registers should only
883 * need to be set once at boot.
885 static int ax_open(struct net_device *dev)
888 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
891 * Grab the page lock so we own the register set, then call
895 spin_lock_irqsave(&ei_local->page_lock, flags);
896 AX88190_init(dev, 1);
897 /* Set the flag before we drop the lock, That way the IRQ arrives
898 after its set and we get no silly warnings */
899 netif_start_queue(dev);
900 spin_unlock_irqrestore(&ei_local->page_lock, flags);
901 ei_local->irqlock = 0;
905 #define dev_lock(dev) (((struct ei_device *)netdev_priv(dev))->page_lock)
908 * ax_close - shut down network device
909 * @dev: network device to close
911 * Opposite of ax_open(). Only used when "ifconfig <devname> down" is done.
913 static int ax_close(struct net_device *dev)
918 * Hold the page lock during close
921 spin_lock_irqsave(&dev_lock(dev), flags);
922 AX88190_init(dev, 0);
923 spin_unlock_irqrestore(&dev_lock(dev), flags);
924 netif_stop_queue(dev);
929 * axnet_tx_timeout - handle transmit time out condition
930 * @dev: network device which has apparently fallen asleep
932 * Called by kernel when device never acknowledges a transmit has
933 * completed (or failed) - i.e. never posted a Tx related interrupt.
936 static void axnet_tx_timeout(struct net_device *dev)
938 long e8390_base = dev->base_addr;
939 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
940 int txsr, isr, tickssofar = jiffies - dev_trans_start(dev);
943 dev->stats.tx_errors++;
945 spin_lock_irqsave(&ei_local->page_lock, flags);
946 txsr = inb(e8390_base+EN0_TSR);
947 isr = inb(e8390_base+EN0_ISR);
948 spin_unlock_irqrestore(&ei_local->page_lock, flags);
950 printk(KERN_DEBUG "%s: Tx timed out, %s TSR=%#2x, ISR=%#2x, t=%d.\n",
951 dev->name, (txsr & ENTSR_ABT) ? "excess collisions." :
952 (isr) ? "lost interrupt?" : "cable problem?", txsr, isr, tickssofar);
954 if (!isr && !dev->stats.tx_packets)
956 /* The 8390 probably hasn't gotten on the cable yet. */
957 ei_local->interface_num ^= 1; /* Try a different xcvr. */
960 /* Ugly but a reset can be slow, yet must be protected */
962 spin_lock_irqsave(&ei_local->page_lock, flags);
964 /* Try to restart the card. Perhaps the user has fixed something. */
966 AX88190_init(dev, 1);
968 spin_unlock_irqrestore(&ei_local->page_lock, flags);
969 netif_wake_queue(dev);
973 * axnet_start_xmit - begin packet transmission
974 * @skb: packet to be sent
975 * @dev: network device to which packet is sent
977 * Sends a packet to an 8390 network device.
980 static netdev_tx_t axnet_start_xmit(struct sk_buff *skb,
981 struct net_device *dev)
983 long e8390_base = dev->base_addr;
984 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
985 int length, send_length, output_page;
989 netif_stop_queue(dev);
993 /* Mask interrupts from the ethercard.
994 SMP: We have to grab the lock here otherwise the IRQ handler
995 on another CPU can flip window and race the IRQ mask set. We end
996 up trashing the mcast filter not disabling irqs if we don't lock */
998 spin_lock_irqsave(&ei_local->page_lock, flags);
999 outb_p(0x00, e8390_base + EN0_IMR);
1002 * Slow phase with lock held.
1005 ei_local->irqlock = 1;
1007 send_length = max(length, ETH_ZLEN);
1010 * We have two Tx slots available for use. Find the first free
1011 * slot, and then perform some sanity checks. With two Tx bufs,
1012 * you get very close to transmitting back-to-back packets. With
1013 * only one Tx buf, the transmitter sits idle while you reload the
1014 * card, leaving a substantial gap between each transmitted packet.
1017 if (ei_local->tx1 == 0)
1019 output_page = ei_local->tx_start_page;
1020 ei_local->tx1 = send_length;
1021 if (ei_debug && ei_local->tx2 > 0)
1022 printk(KERN_DEBUG "%s: idle transmitter tx2=%d, lasttx=%d, txing=%d.\n",
1023 dev->name, ei_local->tx2, ei_local->lasttx, ei_local->txing);
1025 else if (ei_local->tx2 == 0)
1027 output_page = ei_local->tx_start_page + TX_PAGES/2;
1028 ei_local->tx2 = send_length;
1029 if (ei_debug && ei_local->tx1 > 0)
1030 printk(KERN_DEBUG "%s: idle transmitter, tx1=%d, lasttx=%d, txing=%d.\n",
1031 dev->name, ei_local->tx1, ei_local->lasttx, ei_local->txing);
1034 { /* We should never get here. */
1036 printk(KERN_DEBUG "%s: No Tx buffers free! tx1=%d tx2=%d last=%d\n",
1037 dev->name, ei_local->tx1, ei_local->tx2, ei_local->lasttx);
1038 ei_local->irqlock = 0;
1039 netif_stop_queue(dev);
1040 outb_p(ENISR_ALL, e8390_base + EN0_IMR);
1041 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1042 dev->stats.tx_errors++;
1043 return NETDEV_TX_BUSY;
1047 * Okay, now upload the packet and trigger a send if the transmitter
1048 * isn't already sending. If it is busy, the interrupt handler will
1049 * trigger the send later, upon receiving a Tx done interrupt.
1052 if (length == skb->len)
1053 ei_block_output(dev, length, skb->data, output_page);
1055 memset(packet, 0, ETH_ZLEN);
1056 skb_copy_from_linear_data(skb, packet, skb->len);
1057 ei_block_output(dev, length, packet, output_page);
1060 if (! ei_local->txing)
1062 ei_local->txing = 1;
1063 NS8390_trigger_send(dev, send_length, output_page);
1064 dev->trans_start = jiffies;
1065 if (output_page == ei_local->tx_start_page)
1068 ei_local->lasttx = -1;
1073 ei_local->lasttx = -2;
1076 else ei_local->txqueue++;
1078 if (ei_local->tx1 && ei_local->tx2)
1079 netif_stop_queue(dev);
1081 netif_start_queue(dev);
1083 /* Turn 8390 interrupts back on. */
1084 ei_local->irqlock = 0;
1085 outb_p(ENISR_ALL, e8390_base + EN0_IMR);
1087 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1089 dev_kfree_skb (skb);
1090 dev->stats.tx_bytes += send_length;
1092 return NETDEV_TX_OK;
1096 * ax_interrupt - handle the interrupts from an 8390
1097 * @irq: interrupt number
1098 * @dev_id: a pointer to the net_device
1100 * Handle the ether interface interrupts. We pull packets from
1101 * the 8390 via the card specific functions and fire them at the networking
1102 * stack. We also handle transmit completions and wake the transmit path if
1103 * necessary. We also update the counters and do other housekeeping as
1107 static irqreturn_t ax_interrupt(int irq, void *dev_id)
1109 struct net_device *dev = dev_id;
1111 int interrupts, nr_serviced = 0, i;
1112 struct ei_device *ei_local;
1114 unsigned long flags;
1116 e8390_base = dev->base_addr;
1117 ei_local = netdev_priv(dev);
1120 * Protect the irq test too.
1123 spin_lock_irqsave(&ei_local->page_lock, flags);
1125 if (ei_local->irqlock)
1127 #if 1 /* This might just be an interrupt for a PCI device sharing this line */
1128 /* The "irqlock" check is only for testing. */
1129 printk(ei_local->irqlock
1130 ? "%s: Interrupted while interrupts are masked! isr=%#2x imr=%#2x.\n"
1131 : "%s: Reentering the interrupt handler! isr=%#2x imr=%#2x.\n",
1132 dev->name, inb_p(e8390_base + EN0_ISR),
1133 inb_p(e8390_base + EN0_IMR));
1135 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1140 printk(KERN_DEBUG "%s: interrupt(isr=%#2.2x).\n", dev->name,
1141 inb_p(e8390_base + EN0_ISR));
1143 outb_p(0x00, e8390_base + EN0_ISR);
1144 ei_local->irqlock = 1;
1146 /* !!Assumption!! -- we stay in page 0. Don't break this. */
1147 while ((interrupts = inb_p(e8390_base + EN0_ISR)) != 0 &&
1148 ++nr_serviced < MAX_SERVICE)
1150 if (!netif_running(dev) || (interrupts == 0xff)) {
1152 printk(KERN_WARNING "%s: interrupt from stopped card\n", dev->name);
1153 outb_p(interrupts, e8390_base + EN0_ISR);
1159 /* AX88190 bug fix. */
1160 outb_p(interrupts, e8390_base + EN0_ISR);
1161 for (i = 0; i < 10; i++) {
1162 if (!(inb(e8390_base + EN0_ISR) & interrupts))
1164 outb_p(0, e8390_base + EN0_ISR);
1165 outb_p(interrupts, e8390_base + EN0_ISR);
1167 if (interrupts & ENISR_OVER)
1169 else if (interrupts & (ENISR_RX+ENISR_RX_ERR))
1171 /* Got a good (?) packet. */
1174 /* Push the next to-transmit packet through. */
1175 if (interrupts & ENISR_TX)
1177 else if (interrupts & ENISR_TX_ERR)
1180 if (interrupts & ENISR_COUNTERS)
1182 dev->stats.rx_frame_errors += inb_p(e8390_base + EN0_COUNTER0);
1183 dev->stats.rx_crc_errors += inb_p(e8390_base + EN0_COUNTER1);
1184 dev->stats.rx_missed_errors+= inb_p(e8390_base + EN0_COUNTER2);
1188 if (interrupts && ei_debug > 3)
1191 if (nr_serviced >= MAX_SERVICE)
1193 /* 0xFF is valid for a card removal */
1194 if(interrupts!=0xFF)
1195 printk(KERN_WARNING "%s: Too much work at interrupt, status %#2.2x\n",
1196 dev->name, interrupts);
1197 outb_p(ENISR_ALL, e8390_base + EN0_ISR); /* Ack. most intrs. */
1199 printk(KERN_WARNING "%s: unknown interrupt %#2x\n", dev->name, interrupts);
1200 outb_p(0xff, e8390_base + EN0_ISR); /* Ack. all intrs. */
1204 /* Turn 8390 interrupts back on. */
1205 ei_local->irqlock = 0;
1206 outb_p(ENISR_ALL, e8390_base + EN0_IMR);
1208 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1209 return IRQ_RETVAL(handled);
1213 * ei_tx_err - handle transmitter error
1214 * @dev: network device which threw the exception
1216 * A transmitter error has happened. Most likely excess collisions (which
1217 * is a fairly normal condition). If the error is one where the Tx will
1218 * have been aborted, we try and send another one right away, instead of
1219 * letting the failed packet sit and collect dust in the Tx buffer. This
1220 * is a much better solution as it avoids kernel based Tx timeouts, and
1221 * an unnecessary card reset.
1223 * Called with lock held.
1226 static void ei_tx_err(struct net_device *dev)
1228 long e8390_base = dev->base_addr;
1229 unsigned char txsr = inb_p(e8390_base+EN0_TSR);
1230 unsigned char tx_was_aborted = txsr & (ENTSR_ABT+ENTSR_FU);
1232 #ifdef VERBOSE_ERROR_DUMP
1233 printk(KERN_DEBUG "%s: transmitter error (%#2x): ", dev->name, txsr);
1234 if (txsr & ENTSR_ABT)
1235 printk("excess-collisions ");
1236 if (txsr & ENTSR_ND)
1237 printk("non-deferral ");
1238 if (txsr & ENTSR_CRS)
1239 printk("lost-carrier ");
1240 if (txsr & ENTSR_FU)
1241 printk("FIFO-underrun ");
1242 if (txsr & ENTSR_CDH)
1243 printk("lost-heartbeat ");
1251 dev->stats.tx_errors++;
1252 if (txsr & ENTSR_CRS) dev->stats.tx_carrier_errors++;
1253 if (txsr & ENTSR_CDH) dev->stats.tx_heartbeat_errors++;
1254 if (txsr & ENTSR_OWC) dev->stats.tx_window_errors++;
1259 * ei_tx_intr - transmit interrupt handler
1260 * @dev: network device for which tx intr is handled
1262 * We have finished a transmit: check for errors and then trigger the next
1263 * packet to be sent. Called with lock held.
1266 static void ei_tx_intr(struct net_device *dev)
1268 long e8390_base = dev->base_addr;
1269 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1270 int status = inb(e8390_base + EN0_TSR);
1273 * There are two Tx buffers, see which one finished, and trigger
1274 * the send of another one if it exists.
1276 ei_local->txqueue--;
1278 if (ei_local->tx1 < 0)
1280 if (ei_local->lasttx != 1 && ei_local->lasttx != -1)
1281 printk(KERN_ERR "%s: bogus last_tx_buffer %d, tx1=%d.\n",
1282 ei_local->name, ei_local->lasttx, ei_local->tx1);
1284 if (ei_local->tx2 > 0)
1286 ei_local->txing = 1;
1287 NS8390_trigger_send(dev, ei_local->tx2, ei_local->tx_start_page + 6);
1288 dev->trans_start = jiffies;
1290 ei_local->lasttx = 2;
1292 else ei_local->lasttx = 20, ei_local->txing = 0;
1294 else if (ei_local->tx2 < 0)
1296 if (ei_local->lasttx != 2 && ei_local->lasttx != -2)
1297 printk("%s: bogus last_tx_buffer %d, tx2=%d.\n",
1298 ei_local->name, ei_local->lasttx, ei_local->tx2);
1300 if (ei_local->tx1 > 0)
1302 ei_local->txing = 1;
1303 NS8390_trigger_send(dev, ei_local->tx1, ei_local->tx_start_page);
1304 dev->trans_start = jiffies;
1306 ei_local->lasttx = 1;
1309 ei_local->lasttx = 10, ei_local->txing = 0;
1311 // else printk(KERN_WARNING "%s: unexpected TX-done interrupt, lasttx=%d.\n",
1312 // dev->name, ei_local->lasttx);
1314 /* Minimize Tx latency: update the statistics after we restart TXing. */
1315 if (status & ENTSR_COL)
1316 dev->stats.collisions++;
1317 if (status & ENTSR_PTX)
1318 dev->stats.tx_packets++;
1321 dev->stats.tx_errors++;
1322 if (status & ENTSR_ABT)
1324 dev->stats.tx_aborted_errors++;
1325 dev->stats.collisions += 16;
1327 if (status & ENTSR_CRS)
1328 dev->stats.tx_carrier_errors++;
1329 if (status & ENTSR_FU)
1330 dev->stats.tx_fifo_errors++;
1331 if (status & ENTSR_CDH)
1332 dev->stats.tx_heartbeat_errors++;
1333 if (status & ENTSR_OWC)
1334 dev->stats.tx_window_errors++;
1336 netif_wake_queue(dev);
1340 * ei_receive - receive some packets
1341 * @dev: network device with which receive will be run
1343 * We have a good packet(s), get it/them out of the buffers.
1344 * Called with lock held.
1347 static void ei_receive(struct net_device *dev)
1349 long e8390_base = dev->base_addr;
1350 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1351 unsigned char rxing_page, this_frame, next_frame;
1352 unsigned short current_offset;
1353 int rx_pkt_count = 0;
1354 struct e8390_pkt_hdr rx_frame;
1356 while (++rx_pkt_count < 10)
1358 int pkt_len, pkt_stat;
1360 /* Get the rx page (incoming packet pointer). */
1361 rxing_page = inb_p(e8390_base + EN1_CURPAG -1);
1363 /* Remove one frame from the ring. Boundary is always a page behind. */
1364 this_frame = inb_p(e8390_base + EN0_BOUNDARY) + 1;
1365 if (this_frame >= ei_local->stop_page)
1366 this_frame = ei_local->rx_start_page;
1368 /* Someday we'll omit the previous, iff we never get this message.
1369 (There is at least one clone claimed to have a problem.)
1371 Keep quiet if it looks like a card removal. One problem here
1372 is that some clones crash in roughly the same way.
1374 if (ei_debug > 0 && this_frame != ei_local->current_page && (this_frame!=0x0 || rxing_page!=0xFF))
1375 printk(KERN_ERR "%s: mismatched read page pointers %2x vs %2x.\n",
1376 dev->name, this_frame, ei_local->current_page);
1378 if (this_frame == rxing_page) /* Read all the frames? */
1379 break; /* Done for now */
1381 current_offset = this_frame << 8;
1382 ei_get_8390_hdr(dev, &rx_frame, this_frame);
1384 pkt_len = rx_frame.count - sizeof(struct e8390_pkt_hdr);
1385 pkt_stat = rx_frame.status;
1387 next_frame = this_frame + 1 + ((pkt_len+4)>>8);
1389 if (pkt_len < 60 || pkt_len > 1518)
1392 printk(KERN_DEBUG "%s: bogus packet size: %d, status=%#2x nxpg=%#2x.\n",
1393 dev->name, rx_frame.count, rx_frame.status,
1395 dev->stats.rx_errors++;
1396 dev->stats.rx_length_errors++;
1398 else if ((pkt_stat & 0x0F) == ENRSR_RXOK)
1400 struct sk_buff *skb;
1402 skb = dev_alloc_skb(pkt_len+2);
1406 printk(KERN_DEBUG "%s: Couldn't allocate a sk_buff of size %d.\n",
1407 dev->name, pkt_len);
1408 dev->stats.rx_dropped++;
1413 skb_reserve(skb,2); /* IP headers on 16 byte boundaries */
1414 skb_put(skb, pkt_len); /* Make room */
1415 ei_block_input(dev, pkt_len, skb, current_offset + sizeof(rx_frame));
1416 skb->protocol=eth_type_trans(skb,dev);
1418 dev->stats.rx_packets++;
1419 dev->stats.rx_bytes += pkt_len;
1420 if (pkt_stat & ENRSR_PHY)
1421 dev->stats.multicast++;
1427 printk(KERN_DEBUG "%s: bogus packet: status=%#2x nxpg=%#2x size=%d\n",
1428 dev->name, rx_frame.status, rx_frame.next,
1430 dev->stats.rx_errors++;
1431 /* NB: The NIC counts CRC, frame and missed errors. */
1432 if (pkt_stat & ENRSR_FO)
1433 dev->stats.rx_fifo_errors++;
1435 next_frame = rx_frame.next;
1437 /* This _should_ never happen: it's here for avoiding bad clones. */
1438 if (next_frame >= ei_local->stop_page) {
1439 printk("%s: next frame inconsistency, %#2x\n", dev->name,
1441 next_frame = ei_local->rx_start_page;
1443 ei_local->current_page = next_frame;
1444 outb_p(next_frame-1, e8390_base+EN0_BOUNDARY);
1449 * ei_rx_overrun - handle receiver overrun
1450 * @dev: network device which threw exception
1452 * We have a receiver overrun: we have to kick the 8390 to get it started
1453 * again. Problem is that you have to kick it exactly as NS prescribes in
1454 * the updated datasheets, or "the NIC may act in an unpredictable manner."
1455 * This includes causing "the NIC to defer indefinitely when it is stopped
1456 * on a busy network." Ugh.
1457 * Called with lock held. Don't call this with the interrupts off or your
1458 * computer will hate you - it takes 10ms or so.
1461 static void ei_rx_overrun(struct net_device *dev)
1463 axnet_dev_t *info = PRIV(dev);
1464 long e8390_base = dev->base_addr;
1465 unsigned char was_txing, must_resend = 0;
1468 * Record whether a Tx was in progress and then issue the
1471 was_txing = inb_p(e8390_base+E8390_CMD) & E8390_TRANS;
1472 outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD);
1475 printk(KERN_DEBUG "%s: Receiver overrun.\n", dev->name);
1476 dev->stats.rx_over_errors++;
1479 * Wait a full Tx time (1.2ms) + some guard time, NS says 1.6ms total.
1480 * Early datasheets said to poll the reset bit, but now they say that
1481 * it "is not a reliable indicator and subsequently should be ignored."
1482 * We wait at least 10ms.
1488 * Reset RBCR[01] back to zero as per magic incantation.
1490 outb_p(0x00, e8390_base+EN0_RCNTLO);
1491 outb_p(0x00, e8390_base+EN0_RCNTHI);
1494 * See if any Tx was interrupted or not. According to NS, this
1495 * step is vital, and skipping it will cause no end of havoc.
1500 unsigned char tx_completed = inb_p(e8390_base+EN0_ISR) & (ENISR_TX+ENISR_TX_ERR);
1506 * Have to enter loopback mode and then restart the NIC before
1507 * you are allowed to slurp packets up off the ring.
1509 outb_p(E8390_TXOFF, e8390_base + EN0_TXCR);
1510 outb_p(E8390_NODMA + E8390_PAGE0 + E8390_START, e8390_base + E8390_CMD);
1513 * Clear the Rx ring of all the debris, and ack the interrupt.
1518 * Leave loopback mode, and resend any packet that got stopped.
1520 outb_p(E8390_TXCONFIG | info->duplex_flag, e8390_base + EN0_TXCR);
1522 outb_p(E8390_NODMA + E8390_PAGE0 + E8390_START + E8390_TRANS, e8390_base + E8390_CMD);
1526 * Collect the stats. This is called unlocked and from several contexts.
1529 static struct net_device_stats *get_stats(struct net_device *dev)
1531 long ioaddr = dev->base_addr;
1532 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1533 unsigned long flags;
1535 /* If the card is stopped, just return the present stats. */
1536 if (!netif_running(dev))
1539 spin_lock_irqsave(&ei_local->page_lock,flags);
1540 /* Read the counter registers, assuming we are in page 0. */
1541 dev->stats.rx_frame_errors += inb_p(ioaddr + EN0_COUNTER0);
1542 dev->stats.rx_crc_errors += inb_p(ioaddr + EN0_COUNTER1);
1543 dev->stats.rx_missed_errors+= inb_p(ioaddr + EN0_COUNTER2);
1544 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1550 * Form the 64 bit 8390 multicast table from the linked list of addresses
1551 * associated with this dev structure.
1554 static inline void make_mc_bits(u8 *bits, struct net_device *dev)
1556 struct netdev_hw_addr *ha;
1559 netdev_for_each_mc_addr(ha, dev) {
1560 crc = ether_crc(ETH_ALEN, ha->addr);
1562 * The 8390 uses the 6 most significant bits of the
1563 * CRC to index the multicast table.
1565 bits[crc>>29] |= (1<<((crc>>26)&7));
1570 * do_set_multicast_list - set/clear multicast filter
1571 * @dev: net device for which multicast filter is adjusted
1573 * Set or clear the multicast filter for this adaptor.
1574 * Must be called with lock held.
1577 static void do_set_multicast_list(struct net_device *dev)
1579 long e8390_base = dev->base_addr;
1581 struct ei_device *ei_local = (struct ei_device*)netdev_priv(dev);
1583 if (!(dev->flags&(IFF_PROMISC|IFF_ALLMULTI))) {
1584 memset(ei_local->mcfilter, 0, 8);
1585 if (!netdev_mc_empty(dev))
1586 make_mc_bits(ei_local->mcfilter, dev);
1588 /* set to accept-all */
1589 memset(ei_local->mcfilter, 0xFF, 8);
1592 outb_p(E8390_NODMA + E8390_PAGE1, e8390_base + E8390_CMD);
1593 for(i = 0; i < 8; i++)
1595 outb_p(ei_local->mcfilter[i], e8390_base + EN1_MULT_SHIFT(i));
1597 outb_p(E8390_NODMA + E8390_PAGE0, e8390_base + E8390_CMD);
1599 if(dev->flags&IFF_PROMISC)
1600 outb_p(E8390_RXCONFIG | 0x58, e8390_base + EN0_RXCR);
1601 else if (dev->flags & IFF_ALLMULTI || !netdev_mc_empty(dev))
1602 outb_p(E8390_RXCONFIG | 0x48, e8390_base + EN0_RXCR);
1604 outb_p(E8390_RXCONFIG | 0x40, e8390_base + EN0_RXCR);
1606 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, e8390_base+E8390_CMD);
1610 * Called without lock held. This is invoked from user context and may
1611 * be parallel to just about everything else. Its also fairly quick and
1612 * not called too often. Must protect against both bh and irq users
1615 static void set_multicast_list(struct net_device *dev)
1617 unsigned long flags;
1619 spin_lock_irqsave(&dev_lock(dev), flags);
1620 do_set_multicast_list(dev);
1621 spin_unlock_irqrestore(&dev_lock(dev), flags);
1624 /* This page of functions should be 8390 generic */
1625 /* Follow National Semi's recommendations for initializing the "NIC". */
1628 * AX88190_init - initialize 8390 hardware
1629 * @dev: network device to initialize
1630 * @startp: boolean. non-zero value to initiate chip processing
1632 * Must be called with lock held.
1635 static void AX88190_init(struct net_device *dev, int startp)
1637 axnet_dev_t *info = PRIV(dev);
1638 long e8390_base = dev->base_addr;
1639 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1641 int endcfg = ei_local->word16 ? (0x48 | ENDCFG_WTS) : 0x48;
1643 if(sizeof(struct e8390_pkt_hdr)!=4)
1644 panic("8390.c: header struct mispacked\n");
1645 /* Follow National Semi's recommendations for initing the DP83902. */
1646 outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD); /* 0x21 */
1647 outb_p(endcfg, e8390_base + EN0_DCFG); /* 0x48 or 0x49 */
1648 /* Clear the remote byte count registers. */
1649 outb_p(0x00, e8390_base + EN0_RCNTLO);
1650 outb_p(0x00, e8390_base + EN0_RCNTHI);
1651 /* Set to monitor and loopback mode -- this is vital!. */
1652 outb_p(E8390_RXOFF|0x40, e8390_base + EN0_RXCR); /* 0x60 */
1653 outb_p(E8390_TXOFF, e8390_base + EN0_TXCR); /* 0x02 */
1654 /* Set the transmit page and receive ring. */
1655 outb_p(ei_local->tx_start_page, e8390_base + EN0_TPSR);
1656 ei_local->tx1 = ei_local->tx2 = 0;
1657 outb_p(ei_local->rx_start_page, e8390_base + EN0_STARTPG);
1658 outb_p(ei_local->stop_page-1, e8390_base + EN0_BOUNDARY); /* 3c503 says 0x3f,NS0x26*/
1659 ei_local->current_page = ei_local->rx_start_page; /* assert boundary+1 */
1660 outb_p(ei_local->stop_page, e8390_base + EN0_STOPPG);
1661 /* Clear the pending interrupts and mask. */
1662 outb_p(0xFF, e8390_base + EN0_ISR);
1663 outb_p(0x00, e8390_base + EN0_IMR);
1665 /* Copy the station address into the DS8390 registers. */
1667 outb_p(E8390_NODMA + E8390_PAGE1 + E8390_STOP, e8390_base+E8390_CMD); /* 0x61 */
1668 for(i = 0; i < 6; i++)
1670 outb_p(dev->dev_addr[i], e8390_base + EN1_PHYS_SHIFT(i));
1671 if(inb_p(e8390_base + EN1_PHYS_SHIFT(i))!=dev->dev_addr[i])
1672 printk(KERN_ERR "Hw. address read/write mismap %d\n",i);
1675 outb_p(ei_local->rx_start_page, e8390_base + EN1_CURPAG);
1676 outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD);
1678 netif_start_queue(dev);
1679 ei_local->tx1 = ei_local->tx2 = 0;
1680 ei_local->txing = 0;
1682 if (info->flags & IS_AX88790) /* select Internal PHY */
1683 outb(0x10, e8390_base + AXNET_GPIO);
1687 outb_p(0xff, e8390_base + EN0_ISR);
1688 outb_p(ENISR_ALL, e8390_base + EN0_IMR);
1689 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, e8390_base+E8390_CMD);
1690 outb_p(E8390_TXCONFIG | info->duplex_flag,
1691 e8390_base + EN0_TXCR); /* xmit on. */
1692 /* 3c503 TechMan says rxconfig only after the NIC is started. */
1693 outb_p(E8390_RXCONFIG | 0x40, e8390_base + EN0_RXCR); /* rx on, */
1694 do_set_multicast_list(dev); /* (re)load the mcast table */
1698 /* Trigger a transmit start, assuming the length is valid.
1699 Always called with the page lock held */
1701 static void NS8390_trigger_send(struct net_device *dev, unsigned int length,
1704 long e8390_base = dev->base_addr;
1705 struct ei_device *ei_local __attribute((unused)) = (struct ei_device *) netdev_priv(dev);
1707 if (inb_p(e8390_base) & E8390_TRANS)
1709 printk(KERN_WARNING "%s: trigger_send() called with the transmitter busy.\n",
1713 outb_p(length & 0xff, e8390_base + EN0_TCNTLO);
1714 outb_p(length >> 8, e8390_base + EN0_TCNTHI);
1715 outb_p(start_page, e8390_base + EN0_TPSR);
1716 outb_p(E8390_NODMA+E8390_TRANS+E8390_START, e8390_base+E8390_CMD);