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 /*======================================================================
144 axnet_attach() creates an "instance" of the driver, allocating
145 local data structures for one device. The device is registered
148 ======================================================================*/
150 static int axnet_probe(struct pcmcia_device *link)
153 struct net_device *dev;
154 struct ei_device *ei_local;
156 dev_dbg(&link->dev, "axnet_attach()\n");
158 dev = alloc_etherdev(sizeof(struct ei_device) + sizeof(axnet_dev_t));
162 ei_local = netdev_priv(dev);
163 spin_lock_init(&ei_local->page_lock);
168 link->config_flags |= CONF_ENABLE_IRQ;
170 dev->netdev_ops = &axnet_netdev_ops;
172 SET_ETHTOOL_OPS(dev, &netdev_ethtool_ops);
173 dev->watchdog_timeo = TX_TIMEOUT;
175 return axnet_config(link);
178 /*======================================================================
180 This deletes a driver "instance". The device is de-registered
181 with Card Services. If it has been released, all local data
182 structures are freed. Otherwise, the structures will be freed
183 when the device is released.
185 ======================================================================*/
187 static void axnet_detach(struct pcmcia_device *link)
189 struct net_device *dev = link->priv;
191 dev_dbg(&link->dev, "axnet_detach(0x%p)\n", link);
193 unregister_netdev(dev);
200 /*======================================================================
202 This probes for a card's hardware address by reading the PROM.
204 ======================================================================*/
206 static int get_prom(struct pcmcia_device *link)
208 struct net_device *dev = link->priv;
209 unsigned int ioaddr = dev->base_addr;
212 /* This is based on drivers/net/ne.c */
214 u_char value, offset;
216 {E8390_NODMA+E8390_PAGE0+E8390_STOP, E8390_CMD}, /* Select page 0*/
217 {0x01, EN0_DCFG}, /* Set word-wide access. */
218 {0x00, EN0_RCNTLO}, /* Clear the count regs. */
220 {0x00, EN0_IMR}, /* Mask completion irq. */
222 {E8390_RXOFF|0x40, EN0_RXCR}, /* 0x60 Set to monitor */
223 {E8390_TXOFF, EN0_TXCR}, /* 0x02 and loopback mode. */
226 {0x00, EN0_RSARLO}, /* DMA starting at 0x0400. */
228 {E8390_RREAD+E8390_START, E8390_CMD},
231 /* Not much of a test, but the alternatives are messy */
232 if (link->config_base != 0x03c0)
235 axnet_reset_8390(dev);
238 for (i = 0; i < ARRAY_SIZE(program_seq); i++)
239 outb_p(program_seq[i].value, ioaddr + program_seq[i].offset);
241 for (i = 0; i < 6; i += 2) {
242 j = inw(ioaddr + AXNET_DATAPORT);
243 dev->dev_addr[i] = j & 0xff;
244 dev->dev_addr[i+1] = j >> 8;
249 /*======================================================================
251 axnet_config() is scheduled to run after a CARD_INSERTION event
252 is received, to configure the PCMCIA socket, and to make the
253 ethernet device available to the system.
255 ======================================================================*/
257 static int try_io_port(struct pcmcia_device *link)
260 link->resource[0]->flags &= ~IO_DATA_PATH_WIDTH;
261 link->resource[1]->flags &= ~IO_DATA_PATH_WIDTH;
262 if (link->resource[0]->end == 32) {
263 link->resource[0]->flags |= IO_DATA_PATH_WIDTH_AUTO;
264 /* for master/slave multifunction cards */
265 if (link->resource[1]->end > 0)
266 link->resource[1]->flags |= IO_DATA_PATH_WIDTH_8;
268 /* This should be two 16-port windows */
269 link->resource[0]->flags |= IO_DATA_PATH_WIDTH_8;
270 link->resource[1]->flags |= IO_DATA_PATH_WIDTH_16;
272 if (link->resource[0]->start == 0) {
273 for (j = 0; j < 0x400; j += 0x20) {
274 link->resource[0]->start = j ^ 0x300;
275 link->resource[1]->start = (j ^ 0x300) + 0x10;
277 ret = pcmcia_request_io(link);
283 return pcmcia_request_io(link);
287 static int axnet_configcheck(struct pcmcia_device *p_dev, void *priv_data)
289 if (p_dev->config_index == 0)
292 p_dev->config_index = 0x05;
293 if (p_dev->resource[0]->end + p_dev->resource[1]->end < 32)
296 return try_io_port(p_dev);
299 static int axnet_config(struct pcmcia_device *link)
301 struct net_device *dev = link->priv;
302 axnet_dev_t *info = PRIV(dev);
305 dev_dbg(&link->dev, "axnet_config(0x%p)\n", link);
307 /* don't trust the CIS on this; Linksys got it wrong */
308 link->config_regs = 0x63;
309 link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_IO;
310 ret = pcmcia_loop_config(link, axnet_configcheck, NULL);
317 if (resource_size(link->resource[1]) == 8)
318 link->config_flags |= CONF_ENABLE_SPKR;
320 ret = pcmcia_enable_device(link);
324 dev->irq = link->irq;
325 dev->base_addr = link->resource[0]->start;
327 if (!get_prom(link)) {
328 printk(KERN_NOTICE "axnet_cs: this is not an AX88190 card!\n");
329 printk(KERN_NOTICE "axnet_cs: use pcnet_cs instead.\n");
333 ei_status.name = "AX88190";
334 ei_status.word16 = 1;
335 ei_status.tx_start_page = AXNET_START_PG;
336 ei_status.rx_start_page = AXNET_START_PG + TX_PAGES;
337 ei_status.stop_page = AXNET_STOP_PG;
338 ei_status.reset_8390 = &axnet_reset_8390;
339 ei_status.get_8390_hdr = &get_8390_hdr;
340 ei_status.block_input = &block_input;
341 ei_status.block_output = &block_output;
343 if (inb(dev->base_addr + AXNET_TEST) != 0)
344 info->flags |= IS_AX88790;
346 info->flags |= IS_AX88190;
348 if (info->flags & IS_AX88790)
349 outb(0x10, dev->base_addr + AXNET_GPIO); /* select Internal PHY */
351 for (i = 0; i < 32; i++) {
352 j = mdio_read(dev->base_addr + AXNET_MII_EEP, i, 1);
353 j2 = mdio_read(dev->base_addr + AXNET_MII_EEP, i, 2);
354 if (j == j2) continue;
355 if ((j != 0) && (j != 0xffff)) break;
358 /* Maybe PHY is in power down mode. (PPD_SET = 1)
359 Bit 2 of CCSR is active low. */
361 pcmcia_write_config_byte(link, CISREG_CCSR, 0x04);
362 for (i = 0; i < 32; i++) {
363 j = mdio_read(dev->base_addr + AXNET_MII_EEP, i, 1);
364 j2 = mdio_read(dev->base_addr + AXNET_MII_EEP, i, 2);
365 if (j == j2) continue;
366 if ((j != 0) && (j != 0xffff)) break;
370 info->phy_id = (i < 32) ? i : -1;
371 SET_NETDEV_DEV(dev, &link->dev);
373 if (register_netdev(dev) != 0) {
374 printk(KERN_NOTICE "axnet_cs: register_netdev() failed\n");
378 printk(KERN_INFO "%s: Asix AX88%d90: io %#3lx, irq %d, "
380 dev->name, ((info->flags & IS_AX88790) ? 7 : 1),
381 dev->base_addr, dev->irq,
383 if (info->phy_id != -1) {
384 dev_dbg(&link->dev, " MII transceiver at index %d, status %x.\n", info->phy_id, j);
386 printk(KERN_NOTICE " No MII transceivers found!\n");
395 /*======================================================================
397 After a card is removed, axnet_release() will unregister the net
398 device, and release the PCMCIA configuration. If the device is
399 still open, this will be postponed until it is closed.
401 ======================================================================*/
403 static void axnet_release(struct pcmcia_device *link)
405 pcmcia_disable_device(link);
408 static int axnet_suspend(struct pcmcia_device *link)
410 struct net_device *dev = link->priv;
413 netif_device_detach(dev);
418 static int axnet_resume(struct pcmcia_device *link)
420 struct net_device *dev = link->priv;
423 axnet_reset_8390(dev);
424 AX88190_init(dev, 1);
425 netif_device_attach(dev);
432 /*======================================================================
434 MII interface support
436 ======================================================================*/
438 #define MDIO_SHIFT_CLK 0x01
439 #define MDIO_DATA_WRITE0 0x00
440 #define MDIO_DATA_WRITE1 0x08
441 #define MDIO_DATA_READ 0x04
442 #define MDIO_MASK 0x0f
443 #define MDIO_ENB_IN 0x02
445 static void mdio_sync(unsigned int addr)
448 for (bits = 0; bits < 32; bits++) {
449 outb_p(MDIO_DATA_WRITE1, addr);
450 outb_p(MDIO_DATA_WRITE1 | MDIO_SHIFT_CLK, addr);
454 static int mdio_read(unsigned int addr, int phy_id, int loc)
456 u_int cmd = (0xf6<<10)|(phy_id<<5)|loc;
460 for (i = 14; i >= 0; i--) {
461 int dat = (cmd&(1<<i)) ? MDIO_DATA_WRITE1 : MDIO_DATA_WRITE0;
463 outb_p(dat | MDIO_SHIFT_CLK, addr);
465 for (i = 19; i > 0; i--) {
466 outb_p(MDIO_ENB_IN, addr);
467 retval = (retval << 1) | ((inb_p(addr) & MDIO_DATA_READ) != 0);
468 outb_p(MDIO_ENB_IN | MDIO_SHIFT_CLK, addr);
470 return (retval>>1) & 0xffff;
473 static void mdio_write(unsigned int addr, int phy_id, int loc, int value)
475 u_int cmd = (0x05<<28)|(phy_id<<23)|(loc<<18)|(1<<17)|value;
479 for (i = 31; i >= 0; i--) {
480 int dat = (cmd&(1<<i)) ? MDIO_DATA_WRITE1 : MDIO_DATA_WRITE0;
482 outb_p(dat | MDIO_SHIFT_CLK, addr);
484 for (i = 1; i >= 0; i--) {
485 outb_p(MDIO_ENB_IN, addr);
486 outb_p(MDIO_ENB_IN | MDIO_SHIFT_CLK, addr);
490 /*====================================================================*/
492 static int axnet_open(struct net_device *dev)
495 axnet_dev_t *info = PRIV(dev);
496 struct pcmcia_device *link = info->p_dev;
497 unsigned int nic_base = dev->base_addr;
499 dev_dbg(&link->dev, "axnet_open('%s')\n", dev->name);
501 if (!pcmcia_dev_present(link))
504 outb_p(0xFF, nic_base + EN0_ISR); /* Clear bogus intr. */
505 ret = request_irq(dev->irq, ei_irq_wrapper, IRQF_SHARED, "axnet_cs", dev);
511 info->link_status = 0x00;
512 init_timer(&info->watchdog);
513 info->watchdog.function = &ei_watchdog;
514 info->watchdog.data = (u_long)dev;
515 info->watchdog.expires = jiffies + HZ;
516 add_timer(&info->watchdog);
521 /*====================================================================*/
523 static int axnet_close(struct net_device *dev)
525 axnet_dev_t *info = PRIV(dev);
526 struct pcmcia_device *link = info->p_dev;
528 dev_dbg(&link->dev, "axnet_close('%s')\n", dev->name);
531 free_irq(dev->irq, dev);
534 netif_stop_queue(dev);
535 del_timer_sync(&info->watchdog);
540 /*======================================================================
542 Hard reset the card. This used to pause for the same period that
543 a 8390 reset command required, but that shouldn't be necessary.
545 ======================================================================*/
547 static void axnet_reset_8390(struct net_device *dev)
549 unsigned int nic_base = dev->base_addr;
552 ei_status.txing = ei_status.dmaing = 0;
554 outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, nic_base + E8390_CMD);
556 outb(inb(nic_base + AXNET_RESET), nic_base + AXNET_RESET);
558 for (i = 0; i < 100; i++) {
559 if ((inb_p(nic_base+EN0_ISR) & ENISR_RESET) != 0)
563 outb_p(ENISR_RESET, nic_base + EN0_ISR); /* Ack intr. */
566 printk(KERN_ERR "%s: axnet_reset_8390() did not complete.\n",
569 } /* axnet_reset_8390 */
571 /*====================================================================*/
573 static irqreturn_t ei_irq_wrapper(int irq, void *dev_id)
575 struct net_device *dev = dev_id;
576 PRIV(dev)->stale = 0;
577 return ax_interrupt(irq, dev_id);
580 static void ei_watchdog(u_long arg)
582 struct net_device *dev = (struct net_device *)(arg);
583 axnet_dev_t *info = PRIV(dev);
584 unsigned int nic_base = dev->base_addr;
585 unsigned int mii_addr = nic_base + AXNET_MII_EEP;
588 if (!netif_device_present(dev)) goto reschedule;
590 /* Check for pending interrupt with expired latency timer: with
591 this, we can limp along even if the interrupt is blocked */
592 if (info->stale++ && (inb_p(nic_base + EN0_ISR) & ENISR_ALL)) {
593 if (!info->fast_poll)
594 printk(KERN_INFO "%s: interrupt(s) dropped!\n", dev->name);
595 ei_irq_wrapper(dev->irq, dev);
596 info->fast_poll = HZ;
598 if (info->fast_poll) {
600 info->watchdog.expires = jiffies + 1;
601 add_timer(&info->watchdog);
605 if (info->phy_id < 0)
607 link = mdio_read(mii_addr, info->phy_id, 1);
608 if (!link || (link == 0xffff)) {
609 printk(KERN_INFO "%s: MII is missing!\n", dev->name);
615 if (link != info->link_status) {
616 u_short p = mdio_read(mii_addr, info->phy_id, 5);
617 printk(KERN_INFO "%s: %s link beat\n", dev->name,
618 (link) ? "found" : "lost");
620 info->duplex_flag = (p & 0x0140) ? 0x80 : 0x00;
622 printk(KERN_INFO "%s: autonegotiation complete: "
623 "%sbaseT-%cD selected\n", dev->name,
624 ((p & 0x0180) ? "100" : "10"),
625 ((p & 0x0140) ? 'F' : 'H'));
627 printk(KERN_INFO "%s: link partner did not autonegotiate\n",
629 AX88190_init(dev, 1);
631 info->link_status = link;
635 info->watchdog.expires = jiffies + HZ;
636 add_timer(&info->watchdog);
639 static void netdev_get_drvinfo(struct net_device *dev,
640 struct ethtool_drvinfo *info)
642 strcpy(info->driver, "axnet_cs");
645 static const struct ethtool_ops netdev_ethtool_ops = {
646 .get_drvinfo = netdev_get_drvinfo,
649 /*====================================================================*/
651 static int axnet_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
653 axnet_dev_t *info = PRIV(dev);
654 struct mii_ioctl_data *data = if_mii(rq);
655 unsigned int mii_addr = dev->base_addr + AXNET_MII_EEP;
658 data->phy_id = info->phy_id;
659 case SIOCGMIIREG: /* Read MII PHY register. */
660 data->val_out = mdio_read(mii_addr, data->phy_id, data->reg_num & 0x1f);
662 case SIOCSMIIREG: /* Write MII PHY register. */
663 mdio_write(mii_addr, data->phy_id, data->reg_num & 0x1f, data->val_in);
669 /*====================================================================*/
671 static void get_8390_hdr(struct net_device *dev,
672 struct e8390_pkt_hdr *hdr,
675 unsigned int nic_base = dev->base_addr;
677 outb_p(0, nic_base + EN0_RSARLO); /* On page boundary */
678 outb_p(ring_page, nic_base + EN0_RSARHI);
679 outb_p(E8390_RREAD+E8390_START, nic_base + AXNET_CMD);
681 insw(nic_base + AXNET_DATAPORT, hdr,
682 sizeof(struct e8390_pkt_hdr)>>1);
683 /* Fix for big endian systems */
684 hdr->count = le16_to_cpu(hdr->count);
688 /*====================================================================*/
690 static void block_input(struct net_device *dev, int count,
691 struct sk_buff *skb, int ring_offset)
693 unsigned int nic_base = dev->base_addr;
694 int xfer_count = count;
695 char *buf = skb->data;
697 if ((ei_debug > 4) && (count != 4))
698 pr_debug("%s: [bi=%d]\n", dev->name, count+4);
699 outb_p(ring_offset & 0xff, nic_base + EN0_RSARLO);
700 outb_p(ring_offset >> 8, nic_base + EN0_RSARHI);
701 outb_p(E8390_RREAD+E8390_START, nic_base + AXNET_CMD);
703 insw(nic_base + AXNET_DATAPORT,buf,count>>1);
705 buf[count-1] = inb(nic_base + AXNET_DATAPORT), xfer_count++;
709 /*====================================================================*/
711 static void block_output(struct net_device *dev, int count,
712 const u_char *buf, const int start_page)
714 unsigned int nic_base = dev->base_addr;
716 pr_debug("%s: [bo=%d]\n", dev->name, count);
718 /* Round the count up for word writes. Do we need to do this?
719 What effect will an odd byte count have on the 8390?
720 I should check someday. */
724 outb_p(0x00, nic_base + EN0_RSARLO);
725 outb_p(start_page, nic_base + EN0_RSARHI);
726 outb_p(E8390_RWRITE+E8390_START, nic_base + AXNET_CMD);
727 outsw(nic_base + AXNET_DATAPORT, buf, count>>1);
730 static struct pcmcia_device_id axnet_ids[] = {
731 PCMCIA_PFC_DEVICE_MANF_CARD(0, 0x016c, 0x0081),
732 PCMCIA_DEVICE_MANF_CARD(0x018a, 0x0301),
733 PCMCIA_DEVICE_MANF_CARD(0x026f, 0x0301),
734 PCMCIA_DEVICE_MANF_CARD(0x026f, 0x0303),
735 PCMCIA_DEVICE_MANF_CARD(0x026f, 0x0309),
736 PCMCIA_DEVICE_MANF_CARD(0x0274, 0x1106),
737 PCMCIA_DEVICE_MANF_CARD(0x8a01, 0xc1ab),
738 PCMCIA_DEVICE_MANF_CARD(0x021b, 0x0202),
739 PCMCIA_DEVICE_MANF_CARD(0xffff, 0x1090),
740 PCMCIA_DEVICE_PROD_ID12("AmbiCom,Inc.", "Fast Ethernet PC Card(AMB8110)", 0x49b020a7, 0x119cc9fc),
741 PCMCIA_DEVICE_PROD_ID124("Fast Ethernet", "16-bit PC Card", "AX88190", 0xb4be14e3, 0x9a12eb6a, 0xab9be5ef),
742 PCMCIA_DEVICE_PROD_ID12("ASIX", "AX88190", 0x0959823b, 0xab9be5ef),
743 PCMCIA_DEVICE_PROD_ID12("Billionton", "LNA-100B", 0x552ab682, 0xbc3b87e1),
744 PCMCIA_DEVICE_PROD_ID12("CHEETAH ETHERCARD", "EN2228", 0x00fa7bc8, 0x00e990cc),
745 PCMCIA_DEVICE_PROD_ID12("CNet", "CNF301", 0xbc477dde, 0x78c5f40b),
746 PCMCIA_DEVICE_PROD_ID12("corega K.K.", "corega FEther PCC-TXD", 0x5261440f, 0x436768c5),
747 PCMCIA_DEVICE_PROD_ID12("corega K.K.", "corega FEtherII PCC-TXD", 0x5261440f, 0x730df72e),
748 PCMCIA_DEVICE_PROD_ID12("corega K.K.", "corega FEther PCC-TXM", 0x5261440f, 0x3abbd061),
749 PCMCIA_DEVICE_PROD_ID12("Dynalink", "L100C16", 0x55632fd5, 0x66bc2a90),
750 PCMCIA_DEVICE_PROD_ID12("IO DATA", "ETXPCM", 0x547e66dc, 0x233adac2),
751 PCMCIA_DEVICE_PROD_ID12("Linksys", "EtherFast 10/100 PC Card (PCMPC100 V3)", 0x0733cc81, 0x232019a8),
752 PCMCIA_DEVICE_PROD_ID12("MELCO", "LPC3-TX", 0x481e0094, 0xf91af609),
753 PCMCIA_DEVICE_PROD_ID12("NETGEAR", "FA411", 0x9aa79dc3, 0x40fad875),
754 PCMCIA_DEVICE_PROD_ID12("PCMCIA", "100BASE", 0x281f1c5d, 0x7c2add04),
755 PCMCIA_DEVICE_PROD_ID12("PCMCIA", "FastEtherCard", 0x281f1c5d, 0x7ef26116),
756 PCMCIA_DEVICE_PROD_ID12("PCMCIA", "FEP501", 0x281f1c5d, 0x2e272058),
757 PCMCIA_DEVICE_PROD_ID14("Network Everywhere", "AX88190", 0x820a67b6, 0xab9be5ef),
760 MODULE_DEVICE_TABLE(pcmcia, axnet_ids);
762 static struct pcmcia_driver axnet_cs_driver = {
763 .owner = THIS_MODULE,
767 .probe = axnet_probe,
768 .remove = axnet_detach,
769 .id_table = axnet_ids,
770 .suspend = axnet_suspend,
771 .resume = axnet_resume,
774 static int __init init_axnet_cs(void)
776 return pcmcia_register_driver(&axnet_cs_driver);
779 static void __exit exit_axnet_cs(void)
781 pcmcia_unregister_driver(&axnet_cs_driver);
784 module_init(init_axnet_cs);
785 module_exit(exit_axnet_cs);
787 /*====================================================================*/
789 /* 8390.c: A general NS8390 ethernet driver core for linux. */
791 Written 1992-94 by Donald Becker.
793 Copyright 1993 United States Government as represented by the
794 Director, National Security Agency.
796 This software may be used and distributed according to the terms
797 of the GNU General Public License, incorporated herein by reference.
799 The author may be reached as becker@scyld.com, or C/O
800 Scyld Computing Corporation
801 410 Severn Ave., Suite 210
804 This is the chip-specific code for many 8390-based ethernet adaptors.
805 This is not a complete driver, it must be combined with board-specific
806 code such as ne.c, wd.c, 3c503.c, etc.
808 Seeing how at least eight drivers use this code, (not counting the
809 PCMCIA ones either) it is easy to break some card by what seems like
810 a simple innocent change. Please contact me or Donald if you think
811 you have found something that needs changing. -- PG
815 Paul Gortmaker : remove set_bit lock, other cleanups.
816 Paul Gortmaker : add ei_get_8390_hdr() so we can pass skb's to
817 ei_block_input() for eth_io_copy_and_sum().
818 Paul Gortmaker : exchange static int ei_pingpong for a #define,
819 also add better Tx error handling.
820 Paul Gortmaker : rewrite Rx overrun handling as per NS specs.
821 Alexey Kuznetsov : use the 8390's six bit hash multicast filter.
822 Paul Gortmaker : tweak ANK's above multicast changes a bit.
823 Paul Gortmaker : update packet statistics for v2.1.x
824 Alan Cox : support arbitary stupid port mappings on the
825 68K Macintosh. Support >16bit I/O spaces
826 Paul Gortmaker : add kmod support for auto-loading of the 8390
827 module by all drivers that require it.
828 Alan Cox : Spinlocking work, added 'BUG_83C690'
829 Paul Gortmaker : Separate out Tx timeout code from Tx path.
832 The National Semiconductor LAN Databook, and the 3Com 3c503 databook.
836 static const char version_8390[] = KERN_INFO \
837 "8390.c:v1.10cvs 9/23/94 Donald Becker (becker@scyld.com)\n";
839 #include <linux/bitops.h>
841 #include <linux/fcntl.h>
842 #include <linux/in.h>
843 #include <linux/interrupt.h>
847 /* These are the operational function interfaces to board-specific
849 void reset_8390(struct net_device *dev)
850 Resets the board associated with DEV, including a hardware reset of
851 the 8390. This is only called when there is a transmit timeout, and
852 it is always followed by 8390_init().
853 void block_output(struct net_device *dev, int count, const unsigned char *buf,
855 Write the COUNT bytes of BUF to the packet buffer at START_PAGE. The
856 "page" value uses the 8390's 256-byte pages.
857 void get_8390_hdr(struct net_device *dev, struct e8390_hdr *hdr, int ring_page)
858 Read the 4 byte, page aligned 8390 header. *If* there is a
859 subsequent read, it will be of the rest of the packet.
860 void block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset)
861 Read COUNT bytes from the packet buffer into the skb data area. Start
862 reading from RING_OFFSET, the address as the 8390 sees it. This will always
863 follow the read of the 8390 header.
865 #define ei_reset_8390 (ei_local->reset_8390)
866 #define ei_block_output (ei_local->block_output)
867 #define ei_block_input (ei_local->block_input)
868 #define ei_get_8390_hdr (ei_local->get_8390_hdr)
870 /* use 0 for production, 1 for verification, >2 for debug */
875 /* Index to functions. */
876 static void ei_tx_intr(struct net_device *dev);
877 static void ei_tx_err(struct net_device *dev);
878 static void ei_receive(struct net_device *dev);
879 static void ei_rx_overrun(struct net_device *dev);
881 /* Routines generic to NS8390-based boards. */
882 static void NS8390_trigger_send(struct net_device *dev, unsigned int length,
884 static void do_set_multicast_list(struct net_device *dev);
887 * SMP and the 8390 setup.
889 * The 8390 isnt exactly designed to be multithreaded on RX/TX. There is
890 * a page register that controls bank and packet buffer access. We guard
891 * this with ei_local->page_lock. Nobody should assume or set the page other
892 * than zero when the lock is not held. Lock holders must restore page 0
893 * before unlocking. Even pure readers must take the lock to protect in
896 * To make life difficult the chip can also be very slow. We therefore can't
897 * just use spinlocks. For the longer lockups we disable the irq the device
898 * sits on and hold the lock. We must hold the lock because there is a dual
899 * processor case other than interrupts (get stats/set multicast list in
900 * parallel with each other and transmit).
902 * Note: in theory we can just disable the irq on the card _but_ there is
903 * a latency on SMP irq delivery. So we can easily go "disable irq" "sync irqs"
904 * enter lock, take the queued irq. So we waddle instead of flying.
906 * Finally by special arrangement for the purpose of being generally
907 * annoying the transmit function is called bh atomic. That places
908 * restrictions on the user context callers as disable_irq won't save
913 * ax_open - Open/initialize the board.
914 * @dev: network device to initialize
916 * This routine goes all-out, setting everything
917 * up anew at each open, even though many of these registers should only
918 * need to be set once at boot.
920 static int ax_open(struct net_device *dev)
923 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
926 * Grab the page lock so we own the register set, then call
930 spin_lock_irqsave(&ei_local->page_lock, flags);
931 AX88190_init(dev, 1);
932 /* Set the flag before we drop the lock, That way the IRQ arrives
933 after its set and we get no silly warnings */
934 netif_start_queue(dev);
935 spin_unlock_irqrestore(&ei_local->page_lock, flags);
936 ei_local->irqlock = 0;
940 #define dev_lock(dev) (((struct ei_device *)netdev_priv(dev))->page_lock)
943 * ax_close - shut down network device
944 * @dev: network device to close
946 * Opposite of ax_open(). Only used when "ifconfig <devname> down" is done.
948 static int ax_close(struct net_device *dev)
953 * Hold the page lock during close
956 spin_lock_irqsave(&dev_lock(dev), flags);
957 AX88190_init(dev, 0);
958 spin_unlock_irqrestore(&dev_lock(dev), flags);
959 netif_stop_queue(dev);
964 * axnet_tx_timeout - handle transmit time out condition
965 * @dev: network device which has apparently fallen asleep
967 * Called by kernel when device never acknowledges a transmit has
968 * completed (or failed) - i.e. never posted a Tx related interrupt.
971 static void axnet_tx_timeout(struct net_device *dev)
973 long e8390_base = dev->base_addr;
974 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
975 int txsr, isr, tickssofar = jiffies - dev_trans_start(dev);
978 dev->stats.tx_errors++;
980 spin_lock_irqsave(&ei_local->page_lock, flags);
981 txsr = inb(e8390_base+EN0_TSR);
982 isr = inb(e8390_base+EN0_ISR);
983 spin_unlock_irqrestore(&ei_local->page_lock, flags);
985 printk(KERN_DEBUG "%s: Tx timed out, %s TSR=%#2x, ISR=%#2x, t=%d.\n",
986 dev->name, (txsr & ENTSR_ABT) ? "excess collisions." :
987 (isr) ? "lost interrupt?" : "cable problem?", txsr, isr, tickssofar);
989 if (!isr && !dev->stats.tx_packets)
991 /* The 8390 probably hasn't gotten on the cable yet. */
992 ei_local->interface_num ^= 1; /* Try a different xcvr. */
995 /* Ugly but a reset can be slow, yet must be protected */
997 spin_lock_irqsave(&ei_local->page_lock, flags);
999 /* Try to restart the card. Perhaps the user has fixed something. */
1001 AX88190_init(dev, 1);
1003 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1004 netif_wake_queue(dev);
1008 * axnet_start_xmit - begin packet transmission
1009 * @skb: packet to be sent
1010 * @dev: network device to which packet is sent
1012 * Sends a packet to an 8390 network device.
1015 static netdev_tx_t axnet_start_xmit(struct sk_buff *skb,
1016 struct net_device *dev)
1018 long e8390_base = dev->base_addr;
1019 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1020 int length, send_length, output_page;
1021 unsigned long flags;
1022 u8 packet[ETH_ZLEN];
1024 netif_stop_queue(dev);
1028 /* Mask interrupts from the ethercard.
1029 SMP: We have to grab the lock here otherwise the IRQ handler
1030 on another CPU can flip window and race the IRQ mask set. We end
1031 up trashing the mcast filter not disabling irqs if we don't lock */
1033 spin_lock_irqsave(&ei_local->page_lock, flags);
1034 outb_p(0x00, e8390_base + EN0_IMR);
1037 * Slow phase with lock held.
1040 ei_local->irqlock = 1;
1042 send_length = max(length, ETH_ZLEN);
1045 * We have two Tx slots available for use. Find the first free
1046 * slot, and then perform some sanity checks. With two Tx bufs,
1047 * you get very close to transmitting back-to-back packets. With
1048 * only one Tx buf, the transmitter sits idle while you reload the
1049 * card, leaving a substantial gap between each transmitted packet.
1052 if (ei_local->tx1 == 0)
1054 output_page = ei_local->tx_start_page;
1055 ei_local->tx1 = send_length;
1056 if (ei_debug && ei_local->tx2 > 0)
1057 printk(KERN_DEBUG "%s: idle transmitter tx2=%d, lasttx=%d, txing=%d.\n",
1058 dev->name, ei_local->tx2, ei_local->lasttx, ei_local->txing);
1060 else if (ei_local->tx2 == 0)
1062 output_page = ei_local->tx_start_page + TX_PAGES/2;
1063 ei_local->tx2 = send_length;
1064 if (ei_debug && ei_local->tx1 > 0)
1065 printk(KERN_DEBUG "%s: idle transmitter, tx1=%d, lasttx=%d, txing=%d.\n",
1066 dev->name, ei_local->tx1, ei_local->lasttx, ei_local->txing);
1069 { /* We should never get here. */
1071 printk(KERN_DEBUG "%s: No Tx buffers free! tx1=%d tx2=%d last=%d\n",
1072 dev->name, ei_local->tx1, ei_local->tx2, ei_local->lasttx);
1073 ei_local->irqlock = 0;
1074 netif_stop_queue(dev);
1075 outb_p(ENISR_ALL, e8390_base + EN0_IMR);
1076 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1077 dev->stats.tx_errors++;
1078 return NETDEV_TX_BUSY;
1082 * Okay, now upload the packet and trigger a send if the transmitter
1083 * isn't already sending. If it is busy, the interrupt handler will
1084 * trigger the send later, upon receiving a Tx done interrupt.
1087 if (length == skb->len)
1088 ei_block_output(dev, length, skb->data, output_page);
1090 memset(packet, 0, ETH_ZLEN);
1091 skb_copy_from_linear_data(skb, packet, skb->len);
1092 ei_block_output(dev, length, packet, output_page);
1095 if (! ei_local->txing)
1097 ei_local->txing = 1;
1098 NS8390_trigger_send(dev, send_length, output_page);
1099 dev->trans_start = jiffies;
1100 if (output_page == ei_local->tx_start_page)
1103 ei_local->lasttx = -1;
1108 ei_local->lasttx = -2;
1111 else ei_local->txqueue++;
1113 if (ei_local->tx1 && ei_local->tx2)
1114 netif_stop_queue(dev);
1116 netif_start_queue(dev);
1118 /* Turn 8390 interrupts back on. */
1119 ei_local->irqlock = 0;
1120 outb_p(ENISR_ALL, e8390_base + EN0_IMR);
1122 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1124 dev_kfree_skb (skb);
1125 dev->stats.tx_bytes += send_length;
1127 return NETDEV_TX_OK;
1131 * ax_interrupt - handle the interrupts from an 8390
1132 * @irq: interrupt number
1133 * @dev_id: a pointer to the net_device
1135 * Handle the ether interface interrupts. We pull packets from
1136 * the 8390 via the card specific functions and fire them at the networking
1137 * stack. We also handle transmit completions and wake the transmit path if
1138 * necessary. We also update the counters and do other housekeeping as
1142 static irqreturn_t ax_interrupt(int irq, void *dev_id)
1144 struct net_device *dev = dev_id;
1146 int interrupts, nr_serviced = 0, i;
1147 struct ei_device *ei_local;
1149 unsigned long flags;
1151 e8390_base = dev->base_addr;
1152 ei_local = netdev_priv(dev);
1155 * Protect the irq test too.
1158 spin_lock_irqsave(&ei_local->page_lock, flags);
1160 if (ei_local->irqlock)
1162 #if 1 /* This might just be an interrupt for a PCI device sharing this line */
1163 /* The "irqlock" check is only for testing. */
1164 printk(ei_local->irqlock
1165 ? "%s: Interrupted while interrupts are masked! isr=%#2x imr=%#2x.\n"
1166 : "%s: Reentering the interrupt handler! isr=%#2x imr=%#2x.\n",
1167 dev->name, inb_p(e8390_base + EN0_ISR),
1168 inb_p(e8390_base + EN0_IMR));
1170 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1175 printk(KERN_DEBUG "%s: interrupt(isr=%#2.2x).\n", dev->name,
1176 inb_p(e8390_base + EN0_ISR));
1178 outb_p(0x00, e8390_base + EN0_ISR);
1179 ei_local->irqlock = 1;
1181 /* !!Assumption!! -- we stay in page 0. Don't break this. */
1182 while ((interrupts = inb_p(e8390_base + EN0_ISR)) != 0 &&
1183 ++nr_serviced < MAX_SERVICE)
1185 if (!netif_running(dev) || (interrupts == 0xff)) {
1187 printk(KERN_WARNING "%s: interrupt from stopped card\n", dev->name);
1188 outb_p(interrupts, e8390_base + EN0_ISR);
1194 /* AX88190 bug fix. */
1195 outb_p(interrupts, e8390_base + EN0_ISR);
1196 for (i = 0; i < 10; i++) {
1197 if (!(inb(e8390_base + EN0_ISR) & interrupts))
1199 outb_p(0, e8390_base + EN0_ISR);
1200 outb_p(interrupts, e8390_base + EN0_ISR);
1202 if (interrupts & ENISR_OVER)
1204 else if (interrupts & (ENISR_RX+ENISR_RX_ERR))
1206 /* Got a good (?) packet. */
1209 /* Push the next to-transmit packet through. */
1210 if (interrupts & ENISR_TX)
1212 else if (interrupts & ENISR_TX_ERR)
1215 if (interrupts & ENISR_COUNTERS)
1217 dev->stats.rx_frame_errors += inb_p(e8390_base + EN0_COUNTER0);
1218 dev->stats.rx_crc_errors += inb_p(e8390_base + EN0_COUNTER1);
1219 dev->stats.rx_missed_errors+= inb_p(e8390_base + EN0_COUNTER2);
1223 if (interrupts && ei_debug > 3)
1226 if (nr_serviced >= MAX_SERVICE)
1228 /* 0xFF is valid for a card removal */
1229 if(interrupts!=0xFF)
1230 printk(KERN_WARNING "%s: Too much work at interrupt, status %#2.2x\n",
1231 dev->name, interrupts);
1232 outb_p(ENISR_ALL, e8390_base + EN0_ISR); /* Ack. most intrs. */
1234 printk(KERN_WARNING "%s: unknown interrupt %#2x\n", dev->name, interrupts);
1235 outb_p(0xff, e8390_base + EN0_ISR); /* Ack. all intrs. */
1239 /* Turn 8390 interrupts back on. */
1240 ei_local->irqlock = 0;
1241 outb_p(ENISR_ALL, e8390_base + EN0_IMR);
1243 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1244 return IRQ_RETVAL(handled);
1248 * ei_tx_err - handle transmitter error
1249 * @dev: network device which threw the exception
1251 * A transmitter error has happened. Most likely excess collisions (which
1252 * is a fairly normal condition). If the error is one where the Tx will
1253 * have been aborted, we try and send another one right away, instead of
1254 * letting the failed packet sit and collect dust in the Tx buffer. This
1255 * is a much better solution as it avoids kernel based Tx timeouts, and
1256 * an unnecessary card reset.
1258 * Called with lock held.
1261 static void ei_tx_err(struct net_device *dev)
1263 long e8390_base = dev->base_addr;
1264 unsigned char txsr = inb_p(e8390_base+EN0_TSR);
1265 unsigned char tx_was_aborted = txsr & (ENTSR_ABT+ENTSR_FU);
1267 #ifdef VERBOSE_ERROR_DUMP
1268 printk(KERN_DEBUG "%s: transmitter error (%#2x): ", dev->name, txsr);
1269 if (txsr & ENTSR_ABT)
1270 printk("excess-collisions ");
1271 if (txsr & ENTSR_ND)
1272 printk("non-deferral ");
1273 if (txsr & ENTSR_CRS)
1274 printk("lost-carrier ");
1275 if (txsr & ENTSR_FU)
1276 printk("FIFO-underrun ");
1277 if (txsr & ENTSR_CDH)
1278 printk("lost-heartbeat ");
1286 dev->stats.tx_errors++;
1287 if (txsr & ENTSR_CRS) dev->stats.tx_carrier_errors++;
1288 if (txsr & ENTSR_CDH) dev->stats.tx_heartbeat_errors++;
1289 if (txsr & ENTSR_OWC) dev->stats.tx_window_errors++;
1294 * ei_tx_intr - transmit interrupt handler
1295 * @dev: network device for which tx intr is handled
1297 * We have finished a transmit: check for errors and then trigger the next
1298 * packet to be sent. Called with lock held.
1301 static void ei_tx_intr(struct net_device *dev)
1303 long e8390_base = dev->base_addr;
1304 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1305 int status = inb(e8390_base + EN0_TSR);
1308 * There are two Tx buffers, see which one finished, and trigger
1309 * the send of another one if it exists.
1311 ei_local->txqueue--;
1313 if (ei_local->tx1 < 0)
1315 if (ei_local->lasttx != 1 && ei_local->lasttx != -1)
1316 printk(KERN_ERR "%s: bogus last_tx_buffer %d, tx1=%d.\n",
1317 ei_local->name, ei_local->lasttx, ei_local->tx1);
1319 if (ei_local->tx2 > 0)
1321 ei_local->txing = 1;
1322 NS8390_trigger_send(dev, ei_local->tx2, ei_local->tx_start_page + 6);
1323 dev->trans_start = jiffies;
1325 ei_local->lasttx = 2;
1327 else ei_local->lasttx = 20, ei_local->txing = 0;
1329 else if (ei_local->tx2 < 0)
1331 if (ei_local->lasttx != 2 && ei_local->lasttx != -2)
1332 printk("%s: bogus last_tx_buffer %d, tx2=%d.\n",
1333 ei_local->name, ei_local->lasttx, ei_local->tx2);
1335 if (ei_local->tx1 > 0)
1337 ei_local->txing = 1;
1338 NS8390_trigger_send(dev, ei_local->tx1, ei_local->tx_start_page);
1339 dev->trans_start = jiffies;
1341 ei_local->lasttx = 1;
1344 ei_local->lasttx = 10, ei_local->txing = 0;
1346 // else printk(KERN_WARNING "%s: unexpected TX-done interrupt, lasttx=%d.\n",
1347 // dev->name, ei_local->lasttx);
1349 /* Minimize Tx latency: update the statistics after we restart TXing. */
1350 if (status & ENTSR_COL)
1351 dev->stats.collisions++;
1352 if (status & ENTSR_PTX)
1353 dev->stats.tx_packets++;
1356 dev->stats.tx_errors++;
1357 if (status & ENTSR_ABT)
1359 dev->stats.tx_aborted_errors++;
1360 dev->stats.collisions += 16;
1362 if (status & ENTSR_CRS)
1363 dev->stats.tx_carrier_errors++;
1364 if (status & ENTSR_FU)
1365 dev->stats.tx_fifo_errors++;
1366 if (status & ENTSR_CDH)
1367 dev->stats.tx_heartbeat_errors++;
1368 if (status & ENTSR_OWC)
1369 dev->stats.tx_window_errors++;
1371 netif_wake_queue(dev);
1375 * ei_receive - receive some packets
1376 * @dev: network device with which receive will be run
1378 * We have a good packet(s), get it/them out of the buffers.
1379 * Called with lock held.
1382 static void ei_receive(struct net_device *dev)
1384 long e8390_base = dev->base_addr;
1385 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1386 unsigned char rxing_page, this_frame, next_frame;
1387 unsigned short current_offset;
1388 int rx_pkt_count = 0;
1389 struct e8390_pkt_hdr rx_frame;
1391 while (++rx_pkt_count < 10)
1393 int pkt_len, pkt_stat;
1395 /* Get the rx page (incoming packet pointer). */
1396 rxing_page = inb_p(e8390_base + EN1_CURPAG -1);
1398 /* Remove one frame from the ring. Boundary is always a page behind. */
1399 this_frame = inb_p(e8390_base + EN0_BOUNDARY) + 1;
1400 if (this_frame >= ei_local->stop_page)
1401 this_frame = ei_local->rx_start_page;
1403 /* Someday we'll omit the previous, iff we never get this message.
1404 (There is at least one clone claimed to have a problem.)
1406 Keep quiet if it looks like a card removal. One problem here
1407 is that some clones crash in roughly the same way.
1409 if (ei_debug > 0 && this_frame != ei_local->current_page && (this_frame!=0x0 || rxing_page!=0xFF))
1410 printk(KERN_ERR "%s: mismatched read page pointers %2x vs %2x.\n",
1411 dev->name, this_frame, ei_local->current_page);
1413 if (this_frame == rxing_page) /* Read all the frames? */
1414 break; /* Done for now */
1416 current_offset = this_frame << 8;
1417 ei_get_8390_hdr(dev, &rx_frame, this_frame);
1419 pkt_len = rx_frame.count - sizeof(struct e8390_pkt_hdr);
1420 pkt_stat = rx_frame.status;
1422 next_frame = this_frame + 1 + ((pkt_len+4)>>8);
1424 if (pkt_len < 60 || pkt_len > 1518)
1427 printk(KERN_DEBUG "%s: bogus packet size: %d, status=%#2x nxpg=%#2x.\n",
1428 dev->name, rx_frame.count, rx_frame.status,
1430 dev->stats.rx_errors++;
1431 dev->stats.rx_length_errors++;
1433 else if ((pkt_stat & 0x0F) == ENRSR_RXOK)
1435 struct sk_buff *skb;
1437 skb = dev_alloc_skb(pkt_len+2);
1441 printk(KERN_DEBUG "%s: Couldn't allocate a sk_buff of size %d.\n",
1442 dev->name, pkt_len);
1443 dev->stats.rx_dropped++;
1448 skb_reserve(skb,2); /* IP headers on 16 byte boundaries */
1449 skb_put(skb, pkt_len); /* Make room */
1450 ei_block_input(dev, pkt_len, skb, current_offset + sizeof(rx_frame));
1451 skb->protocol=eth_type_trans(skb,dev);
1453 dev->stats.rx_packets++;
1454 dev->stats.rx_bytes += pkt_len;
1455 if (pkt_stat & ENRSR_PHY)
1456 dev->stats.multicast++;
1462 printk(KERN_DEBUG "%s: bogus packet: status=%#2x nxpg=%#2x size=%d\n",
1463 dev->name, rx_frame.status, rx_frame.next,
1465 dev->stats.rx_errors++;
1466 /* NB: The NIC counts CRC, frame and missed errors. */
1467 if (pkt_stat & ENRSR_FO)
1468 dev->stats.rx_fifo_errors++;
1470 next_frame = rx_frame.next;
1472 /* This _should_ never happen: it's here for avoiding bad clones. */
1473 if (next_frame >= ei_local->stop_page) {
1474 printk("%s: next frame inconsistency, %#2x\n", dev->name,
1476 next_frame = ei_local->rx_start_page;
1478 ei_local->current_page = next_frame;
1479 outb_p(next_frame-1, e8390_base+EN0_BOUNDARY);
1484 * ei_rx_overrun - handle receiver overrun
1485 * @dev: network device which threw exception
1487 * We have a receiver overrun: we have to kick the 8390 to get it started
1488 * again. Problem is that you have to kick it exactly as NS prescribes in
1489 * the updated datasheets, or "the NIC may act in an unpredictable manner."
1490 * This includes causing "the NIC to defer indefinitely when it is stopped
1491 * on a busy network." Ugh.
1492 * Called with lock held. Don't call this with the interrupts off or your
1493 * computer will hate you - it takes 10ms or so.
1496 static void ei_rx_overrun(struct net_device *dev)
1498 axnet_dev_t *info = PRIV(dev);
1499 long e8390_base = dev->base_addr;
1500 unsigned char was_txing, must_resend = 0;
1503 * Record whether a Tx was in progress and then issue the
1506 was_txing = inb_p(e8390_base+E8390_CMD) & E8390_TRANS;
1507 outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD);
1510 printk(KERN_DEBUG "%s: Receiver overrun.\n", dev->name);
1511 dev->stats.rx_over_errors++;
1514 * Wait a full Tx time (1.2ms) + some guard time, NS says 1.6ms total.
1515 * Early datasheets said to poll the reset bit, but now they say that
1516 * it "is not a reliable indicator and subsequently should be ignored."
1517 * We wait at least 10ms.
1523 * Reset RBCR[01] back to zero as per magic incantation.
1525 outb_p(0x00, e8390_base+EN0_RCNTLO);
1526 outb_p(0x00, e8390_base+EN0_RCNTHI);
1529 * See if any Tx was interrupted or not. According to NS, this
1530 * step is vital, and skipping it will cause no end of havoc.
1535 unsigned char tx_completed = inb_p(e8390_base+EN0_ISR) & (ENISR_TX+ENISR_TX_ERR);
1541 * Have to enter loopback mode and then restart the NIC before
1542 * you are allowed to slurp packets up off the ring.
1544 outb_p(E8390_TXOFF, e8390_base + EN0_TXCR);
1545 outb_p(E8390_NODMA + E8390_PAGE0 + E8390_START, e8390_base + E8390_CMD);
1548 * Clear the Rx ring of all the debris, and ack the interrupt.
1553 * Leave loopback mode, and resend any packet that got stopped.
1555 outb_p(E8390_TXCONFIG | info->duplex_flag, e8390_base + EN0_TXCR);
1557 outb_p(E8390_NODMA + E8390_PAGE0 + E8390_START + E8390_TRANS, e8390_base + E8390_CMD);
1561 * Collect the stats. This is called unlocked and from several contexts.
1564 static struct net_device_stats *get_stats(struct net_device *dev)
1566 long ioaddr = dev->base_addr;
1567 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1568 unsigned long flags;
1570 /* If the card is stopped, just return the present stats. */
1571 if (!netif_running(dev))
1574 spin_lock_irqsave(&ei_local->page_lock,flags);
1575 /* Read the counter registers, assuming we are in page 0. */
1576 dev->stats.rx_frame_errors += inb_p(ioaddr + EN0_COUNTER0);
1577 dev->stats.rx_crc_errors += inb_p(ioaddr + EN0_COUNTER1);
1578 dev->stats.rx_missed_errors+= inb_p(ioaddr + EN0_COUNTER2);
1579 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1585 * Form the 64 bit 8390 multicast table from the linked list of addresses
1586 * associated with this dev structure.
1589 static inline void make_mc_bits(u8 *bits, struct net_device *dev)
1591 struct netdev_hw_addr *ha;
1594 netdev_for_each_mc_addr(ha, dev) {
1595 crc = ether_crc(ETH_ALEN, ha->addr);
1597 * The 8390 uses the 6 most significant bits of the
1598 * CRC to index the multicast table.
1600 bits[crc>>29] |= (1<<((crc>>26)&7));
1605 * do_set_multicast_list - set/clear multicast filter
1606 * @dev: net device for which multicast filter is adjusted
1608 * Set or clear the multicast filter for this adaptor.
1609 * Must be called with lock held.
1612 static void do_set_multicast_list(struct net_device *dev)
1614 long e8390_base = dev->base_addr;
1616 struct ei_device *ei_local = (struct ei_device*)netdev_priv(dev);
1618 if (!(dev->flags&(IFF_PROMISC|IFF_ALLMULTI))) {
1619 memset(ei_local->mcfilter, 0, 8);
1620 if (!netdev_mc_empty(dev))
1621 make_mc_bits(ei_local->mcfilter, dev);
1623 /* set to accept-all */
1624 memset(ei_local->mcfilter, 0xFF, 8);
1627 outb_p(E8390_NODMA + E8390_PAGE1, e8390_base + E8390_CMD);
1628 for(i = 0; i < 8; i++)
1630 outb_p(ei_local->mcfilter[i], e8390_base + EN1_MULT_SHIFT(i));
1632 outb_p(E8390_NODMA + E8390_PAGE0, e8390_base + E8390_CMD);
1634 if(dev->flags&IFF_PROMISC)
1635 outb_p(E8390_RXCONFIG | 0x58, e8390_base + EN0_RXCR);
1636 else if (dev->flags & IFF_ALLMULTI || !netdev_mc_empty(dev))
1637 outb_p(E8390_RXCONFIG | 0x48, e8390_base + EN0_RXCR);
1639 outb_p(E8390_RXCONFIG | 0x40, e8390_base + EN0_RXCR);
1641 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, e8390_base+E8390_CMD);
1645 * Called without lock held. This is invoked from user context and may
1646 * be parallel to just about everything else. Its also fairly quick and
1647 * not called too often. Must protect against both bh and irq users
1650 static void set_multicast_list(struct net_device *dev)
1652 unsigned long flags;
1654 spin_lock_irqsave(&dev_lock(dev), flags);
1655 do_set_multicast_list(dev);
1656 spin_unlock_irqrestore(&dev_lock(dev), flags);
1659 /* This page of functions should be 8390 generic */
1660 /* Follow National Semi's recommendations for initializing the "NIC". */
1663 * AX88190_init - initialize 8390 hardware
1664 * @dev: network device to initialize
1665 * @startp: boolean. non-zero value to initiate chip processing
1667 * Must be called with lock held.
1670 static void AX88190_init(struct net_device *dev, int startp)
1672 axnet_dev_t *info = PRIV(dev);
1673 long e8390_base = dev->base_addr;
1674 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1676 int endcfg = ei_local->word16 ? (0x48 | ENDCFG_WTS) : 0x48;
1678 if(sizeof(struct e8390_pkt_hdr)!=4)
1679 panic("8390.c: header struct mispacked\n");
1680 /* Follow National Semi's recommendations for initing the DP83902. */
1681 outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD); /* 0x21 */
1682 outb_p(endcfg, e8390_base + EN0_DCFG); /* 0x48 or 0x49 */
1683 /* Clear the remote byte count registers. */
1684 outb_p(0x00, e8390_base + EN0_RCNTLO);
1685 outb_p(0x00, e8390_base + EN0_RCNTHI);
1686 /* Set to monitor and loopback mode -- this is vital!. */
1687 outb_p(E8390_RXOFF|0x40, e8390_base + EN0_RXCR); /* 0x60 */
1688 outb_p(E8390_TXOFF, e8390_base + EN0_TXCR); /* 0x02 */
1689 /* Set the transmit page and receive ring. */
1690 outb_p(ei_local->tx_start_page, e8390_base + EN0_TPSR);
1691 ei_local->tx1 = ei_local->tx2 = 0;
1692 outb_p(ei_local->rx_start_page, e8390_base + EN0_STARTPG);
1693 outb_p(ei_local->stop_page-1, e8390_base + EN0_BOUNDARY); /* 3c503 says 0x3f,NS0x26*/
1694 ei_local->current_page = ei_local->rx_start_page; /* assert boundary+1 */
1695 outb_p(ei_local->stop_page, e8390_base + EN0_STOPPG);
1696 /* Clear the pending interrupts and mask. */
1697 outb_p(0xFF, e8390_base + EN0_ISR);
1698 outb_p(0x00, e8390_base + EN0_IMR);
1700 /* Copy the station address into the DS8390 registers. */
1702 outb_p(E8390_NODMA + E8390_PAGE1 + E8390_STOP, e8390_base+E8390_CMD); /* 0x61 */
1703 for(i = 0; i < 6; i++)
1705 outb_p(dev->dev_addr[i], e8390_base + EN1_PHYS_SHIFT(i));
1706 if(inb_p(e8390_base + EN1_PHYS_SHIFT(i))!=dev->dev_addr[i])
1707 printk(KERN_ERR "Hw. address read/write mismap %d\n",i);
1710 outb_p(ei_local->rx_start_page, e8390_base + EN1_CURPAG);
1711 outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD);
1713 netif_start_queue(dev);
1714 ei_local->tx1 = ei_local->tx2 = 0;
1715 ei_local->txing = 0;
1717 if (info->flags & IS_AX88790) /* select Internal PHY */
1718 outb(0x10, e8390_base + AXNET_GPIO);
1722 outb_p(0xff, e8390_base + EN0_ISR);
1723 outb_p(ENISR_ALL, e8390_base + EN0_IMR);
1724 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, e8390_base+E8390_CMD);
1725 outb_p(E8390_TXCONFIG | info->duplex_flag,
1726 e8390_base + EN0_TXCR); /* xmit on. */
1727 /* 3c503 TechMan says rxconfig only after the NIC is started. */
1728 outb_p(E8390_RXCONFIG | 0x40, e8390_base + EN0_RXCR); /* rx on, */
1729 do_set_multicast_list(dev); /* (re)load the mcast table */
1733 /* Trigger a transmit start, assuming the length is valid.
1734 Always called with the page lock held */
1736 static void NS8390_trigger_send(struct net_device *dev, unsigned int length,
1739 long e8390_base = dev->base_addr;
1740 struct ei_device *ei_local __attribute((unused)) = (struct ei_device *) netdev_priv(dev);
1742 if (inb_p(e8390_base) & E8390_TRANS)
1744 printk(KERN_WARNING "%s: trigger_send() called with the transmitter busy.\n",
1748 outb_p(length & 0xff, e8390_base + EN0_TCNTLO);
1749 outb_p(length >> 8, e8390_base + EN0_TCNTHI);
1750 outb_p(start_page, e8390_base + EN0_TPSR);
1751 outb_p(E8390_NODMA+E8390_TRANS+E8390_START, e8390_base+E8390_CMD);