1 /*======================================================================
3 A PCMCIA ethernet driver for Asix AX88190-based cards
5 The Asix AX88190 is a NS8390-derived chipset with a few nasty
6 idiosyncracies that make it very inconvenient to support with a
7 standard 8390 driver. This driver is based on pcnet_cs, with the
8 tweaked 8390 code grafted on the end. Much of what I did was to
9 clean up and update a similar driver supplied by Asix, which was
10 adapted by William Lee, william@asix.com.tw.
12 Copyright (C) 2001 David A. Hinds -- dahinds@users.sourceforge.net
14 axnet_cs.c 1.28 2002/06/29 06:27:37
16 The network driver code is based on Donald Becker's NE2000 code:
18 Written 1992,1993 by Donald Becker.
19 Copyright 1993 United States Government as represented by the
20 Director, National Security Agency. This software may be used and
21 distributed according to the terms of the GNU General Public License,
22 incorporated herein by reference.
23 Donald Becker may be reached at becker@scyld.com
25 ======================================================================*/
27 #include <linux/kernel.h>
28 #include <linux/module.h>
29 #include <linux/init.h>
30 #include <linux/ptrace.h>
31 #include <linux/slab.h>
32 #include <linux/string.h>
33 #include <linux/timer.h>
34 #include <linux/delay.h>
35 #include <linux/spinlock.h>
36 #include <linux/ethtool.h>
37 #include <linux/netdevice.h>
38 #include <linux/crc32.h>
41 #include <pcmcia/cs_types.h>
42 #include <pcmcia/cs.h>
43 #include <pcmcia/cistpl.h>
44 #include <pcmcia/ciscode.h>
45 #include <pcmcia/ds.h>
46 #include <pcmcia/cisreg.h>
49 #include <asm/system.h>
50 #include <asm/byteorder.h>
51 #include <asm/uaccess.h>
53 #define AXNET_CMD 0x00
54 #define AXNET_DATAPORT 0x10 /* NatSemi-defined port window offset. */
55 #define AXNET_RESET 0x1f /* Issue a read to reset, a write to clear. */
56 #define AXNET_MII_EEP 0x14 /* Offset of MII access port */
57 #define AXNET_TEST 0x15 /* Offset of TEST Register port */
58 #define AXNET_GPIO 0x17 /* Offset of General Purpose Register Port */
60 #define AXNET_START_PG 0x40 /* First page of TX buffer */
61 #define AXNET_STOP_PG 0x80 /* Last page +1 of RX ring */
63 #define AXNET_RDC_TIMEOUT 0x02 /* Max wait in jiffies for Tx RDC */
65 #define IS_AX88190 0x0001
66 #define IS_AX88790 0x0002
68 /*====================================================================*/
70 /* Module parameters */
72 MODULE_AUTHOR("David Hinds <dahinds@users.sourceforge.net>");
73 MODULE_DESCRIPTION("Asix AX88190 PCMCIA ethernet driver");
74 MODULE_LICENSE("GPL");
77 #define INT_MODULE_PARM(n, v) static int n = v; module_param(n, int, 0)
79 INT_MODULE_PARM(pc_debug, PCMCIA_DEBUG);
80 #define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args)
81 static char *version =
82 "axnet_cs.c 1.28 2002/06/29 06:27:37 (David Hinds)";
84 #define DEBUG(n, args...)
87 /*====================================================================*/
89 static int axnet_config(struct pcmcia_device *link);
90 static void axnet_release(struct pcmcia_device *link);
91 static int axnet_open(struct net_device *dev);
92 static int axnet_close(struct net_device *dev);
93 static int axnet_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
94 static const struct ethtool_ops netdev_ethtool_ops;
95 static irqreturn_t ei_irq_wrapper(int irq, void *dev_id);
96 static void ei_watchdog(u_long arg);
97 static void axnet_reset_8390(struct net_device *dev);
99 static int mdio_read(unsigned int addr, int phy_id, int loc);
100 static void mdio_write(unsigned int addr, int phy_id, int loc, int value);
102 static void get_8390_hdr(struct net_device *,
103 struct e8390_pkt_hdr *, int);
104 static void block_input(struct net_device *dev, int count,
105 struct sk_buff *skb, int ring_offset);
106 static void block_output(struct net_device *dev, int count,
107 const u_char *buf, const int start_page);
109 static void axnet_detach(struct pcmcia_device *p_dev);
111 static void axdev_setup(struct net_device *dev);
112 static void AX88190_init(struct net_device *dev, int startp);
113 static int ax_open(struct net_device *dev);
114 static int ax_close(struct net_device *dev);
115 static irqreturn_t ax_interrupt(int irq, void *dev_id);
117 /*====================================================================*/
119 typedef struct axnet_dev_t {
120 struct pcmcia_device *p_dev;
123 struct timer_list watchdog;
124 int stale, fast_poll;
131 static inline axnet_dev_t *PRIV(struct net_device *dev)
133 void *p = (char *)netdev_priv(dev) + sizeof(struct ei_device);
137 /*======================================================================
139 axnet_attach() creates an "instance" of the driver, allocating
140 local data structures for one device. The device is registered
143 ======================================================================*/
145 static int axnet_probe(struct pcmcia_device *link)
148 struct net_device *dev;
150 DEBUG(0, "axnet_attach()\n");
152 dev = alloc_netdev(sizeof(struct ei_device) + sizeof(axnet_dev_t),
153 "eth%d", axdev_setup);
161 link->irq.Attributes = IRQ_TYPE_DYNAMIC_SHARING;
162 link->irq.IRQInfo1 = IRQ_LEVEL_ID;
163 link->conf.Attributes = CONF_ENABLE_IRQ;
164 link->conf.IntType = INT_MEMORY_AND_IO;
166 dev->open = &axnet_open;
167 dev->stop = &axnet_close;
168 dev->do_ioctl = &axnet_ioctl;
169 SET_ETHTOOL_OPS(dev, &netdev_ethtool_ops);
171 return axnet_config(link);
174 /*======================================================================
176 This deletes a driver "instance". The device is de-registered
177 with Card Services. If it has been released, all local data
178 structures are freed. Otherwise, the structures will be freed
179 when the device is released.
181 ======================================================================*/
183 static void axnet_detach(struct pcmcia_device *link)
185 struct net_device *dev = link->priv;
187 DEBUG(0, "axnet_detach(0x%p)\n", link);
190 unregister_netdev(dev);
197 /*======================================================================
199 This probes for a card's hardware address by reading the PROM.
201 ======================================================================*/
203 static int get_prom(struct pcmcia_device *link)
205 struct net_device *dev = link->priv;
206 unsigned int ioaddr = dev->base_addr;
209 /* This is based on drivers/net/ne.c */
211 u_char value, offset;
213 {E8390_NODMA+E8390_PAGE0+E8390_STOP, E8390_CMD}, /* Select page 0*/
214 {0x01, EN0_DCFG}, /* Set word-wide access. */
215 {0x00, EN0_RCNTLO}, /* Clear the count regs. */
217 {0x00, EN0_IMR}, /* Mask completion irq. */
219 {E8390_RXOFF|0x40, EN0_RXCR}, /* 0x60 Set to monitor */
220 {E8390_TXOFF, EN0_TXCR}, /* 0x02 and loopback mode. */
223 {0x00, EN0_RSARLO}, /* DMA starting at 0x0400. */
225 {E8390_RREAD+E8390_START, E8390_CMD},
228 /* Not much of a test, but the alternatives are messy */
229 if (link->conf.ConfigBase != 0x03c0)
232 axnet_reset_8390(dev);
235 for (i = 0; i < ARRAY_SIZE(program_seq); i++)
236 outb_p(program_seq[i].value, ioaddr + program_seq[i].offset);
238 for (i = 0; i < 6; i += 2) {
239 j = inw(ioaddr + AXNET_DATAPORT);
240 dev->dev_addr[i] = j & 0xff;
241 dev->dev_addr[i+1] = j >> 8;
246 /*======================================================================
248 axnet_config() is scheduled to run after a CARD_INSERTION event
249 is received, to configure the PCMCIA socket, and to make the
250 ethernet device available to the system.
252 ======================================================================*/
254 #define CS_CHECK(fn, ret) \
255 do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
257 static int try_io_port(struct pcmcia_device *link)
260 if (link->io.NumPorts1 == 32) {
261 link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;
262 if (link->io.NumPorts2 > 0) {
263 /* for master/slave multifunction cards */
264 link->io.Attributes2 = IO_DATA_PATH_WIDTH_8;
265 link->irq.Attributes =
266 IRQ_TYPE_DYNAMIC_SHARING|IRQ_FIRST_SHARED;
269 /* This should be two 16-port windows */
270 link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
271 link->io.Attributes2 = IO_DATA_PATH_WIDTH_16;
273 if (link->io.BasePort1 == 0) {
274 link->io.IOAddrLines = 16;
275 for (j = 0; j < 0x400; j += 0x20) {
276 link->io.BasePort1 = j ^ 0x300;
277 link->io.BasePort2 = (j ^ 0x300) + 0x10;
278 ret = pcmcia_request_io(link, &link->io);
279 if (ret == CS_SUCCESS) return ret;
283 return pcmcia_request_io(link, &link->io);
287 static int axnet_configcheck(struct pcmcia_device *p_dev,
288 cistpl_cftable_entry_t *cfg,
292 cistpl_io_t *io = &cfg->io;
294 if (cfg->index == 0 || cfg->io.nwin == 0)
297 p_dev->conf.ConfigIndex = 0x05;
298 /* For multifunction cards, by convention, we configure the
299 network function with window 0, and serial with window 1 */
301 i = (io->win[1].len > io->win[0].len);
302 p_dev->io.BasePort2 = io->win[1-i].base;
303 p_dev->io.NumPorts2 = io->win[1-i].len;
305 i = p_dev->io.NumPorts2 = 0;
307 p_dev->io.BasePort1 = io->win[i].base;
308 p_dev->io.NumPorts1 = io->win[i].len;
309 p_dev->io.IOAddrLines = io->flags & CISTPL_IO_LINES_MASK;
310 if (p_dev->io.NumPorts1 + p_dev->io.NumPorts2 >= 32)
311 return try_io_port(p_dev);
316 static int axnet_config(struct pcmcia_device *link)
318 struct net_device *dev = link->priv;
319 axnet_dev_t *info = PRIV(dev);
320 int i, j, last_ret, last_fn;
321 DECLARE_MAC_BUF(mac);
323 DEBUG(0, "axnet_config(0x%p)\n", link);
325 /* don't trust the CIS on this; Linksys got it wrong */
326 link->conf.Present = 0x63;
327 last_ret = pcmcia_loop_config(link, axnet_configcheck, NULL);
328 if (last_ret != CS_SUCCESS) {
329 cs_error(link, RequestIO, last_ret);
333 CS_CHECK(RequestIRQ, pcmcia_request_irq(link, &link->irq));
335 if (link->io.NumPorts2 == 8) {
336 link->conf.Attributes |= CONF_ENABLE_SPKR;
337 link->conf.Status = CCSR_AUDIO_ENA;
340 CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link, &link->conf));
341 dev->irq = link->irq.AssignedIRQ;
342 dev->base_addr = link->io.BasePort1;
344 if (!get_prom(link)) {
345 printk(KERN_NOTICE "axnet_cs: this is not an AX88190 card!\n");
346 printk(KERN_NOTICE "axnet_cs: use pcnet_cs instead.\n");
350 ei_status.name = "AX88190";
351 ei_status.word16 = 1;
352 ei_status.tx_start_page = AXNET_START_PG;
353 ei_status.rx_start_page = AXNET_START_PG + TX_PAGES;
354 ei_status.stop_page = AXNET_STOP_PG;
355 ei_status.reset_8390 = &axnet_reset_8390;
356 ei_status.get_8390_hdr = &get_8390_hdr;
357 ei_status.block_input = &block_input;
358 ei_status.block_output = &block_output;
360 if (inb(dev->base_addr + AXNET_TEST) != 0)
361 info->flags |= IS_AX88790;
363 info->flags |= IS_AX88190;
365 if (info->flags & IS_AX88790)
366 outb(0x10, dev->base_addr + AXNET_GPIO); /* select Internal PHY */
368 for (i = 0; i < 32; i++) {
369 j = mdio_read(dev->base_addr + AXNET_MII_EEP, i, 1);
370 if ((j != 0) && (j != 0xffff)) break;
373 /* Maybe PHY is in power down mode. (PPD_SET = 1)
374 Bit 2 of CCSR is active low. */
376 conf_reg_t reg = { 0, CS_WRITE, CISREG_CCSR, 0x04 };
377 pcmcia_access_configuration_register(link, ®);
378 for (i = 0; i < 32; i++) {
379 j = mdio_read(dev->base_addr + AXNET_MII_EEP, i, 1);
380 if ((j != 0) && (j != 0xffff)) break;
384 info->phy_id = (i < 32) ? i : -1;
385 link->dev_node = &info->node;
386 SET_NETDEV_DEV(dev, &handle_to_dev(link));
388 if (register_netdev(dev) != 0) {
389 printk(KERN_NOTICE "axnet_cs: register_netdev() failed\n");
390 link->dev_node = NULL;
394 strcpy(info->node.dev_name, dev->name);
396 printk(KERN_INFO "%s: Asix AX88%d90: io %#3lx, irq %d, "
398 dev->name, ((info->flags & IS_AX88790) ? 7 : 1),
399 dev->base_addr, dev->irq,
400 print_mac(mac, dev->dev_addr));
401 if (info->phy_id != -1) {
402 DEBUG(0, " MII transceiver at index %d, status %x.\n", info->phy_id, j);
404 printk(KERN_NOTICE " No MII transceivers found!\n");
409 cs_error(link, last_fn, last_ret);
415 /*======================================================================
417 After a card is removed, axnet_release() will unregister the net
418 device, and release the PCMCIA configuration. If the device is
419 still open, this will be postponed until it is closed.
421 ======================================================================*/
423 static void axnet_release(struct pcmcia_device *link)
425 pcmcia_disable_device(link);
428 static int axnet_suspend(struct pcmcia_device *link)
430 struct net_device *dev = link->priv;
433 netif_device_detach(dev);
438 static int axnet_resume(struct pcmcia_device *link)
440 struct net_device *dev = link->priv;
443 axnet_reset_8390(dev);
444 AX88190_init(dev, 1);
445 netif_device_attach(dev);
452 /*======================================================================
454 MII interface support
456 ======================================================================*/
458 #define MDIO_SHIFT_CLK 0x01
459 #define MDIO_DATA_WRITE0 0x00
460 #define MDIO_DATA_WRITE1 0x08
461 #define MDIO_DATA_READ 0x04
462 #define MDIO_MASK 0x0f
463 #define MDIO_ENB_IN 0x02
465 static void mdio_sync(unsigned int addr)
468 for (bits = 0; bits < 32; bits++) {
469 outb_p(MDIO_DATA_WRITE1, addr);
470 outb_p(MDIO_DATA_WRITE1 | MDIO_SHIFT_CLK, addr);
474 static int mdio_read(unsigned int addr, int phy_id, int loc)
476 u_int cmd = (0xf6<<10)|(phy_id<<5)|loc;
480 for (i = 14; i >= 0; i--) {
481 int dat = (cmd&(1<<i)) ? MDIO_DATA_WRITE1 : MDIO_DATA_WRITE0;
483 outb_p(dat | MDIO_SHIFT_CLK, addr);
485 for (i = 19; i > 0; i--) {
486 outb_p(MDIO_ENB_IN, addr);
487 retval = (retval << 1) | ((inb_p(addr) & MDIO_DATA_READ) != 0);
488 outb_p(MDIO_ENB_IN | MDIO_SHIFT_CLK, addr);
490 return (retval>>1) & 0xffff;
493 static void mdio_write(unsigned int addr, int phy_id, int loc, int value)
495 u_int cmd = (0x05<<28)|(phy_id<<23)|(loc<<18)|(1<<17)|value;
499 for (i = 31; i >= 0; i--) {
500 int dat = (cmd&(1<<i)) ? MDIO_DATA_WRITE1 : MDIO_DATA_WRITE0;
502 outb_p(dat | MDIO_SHIFT_CLK, addr);
504 for (i = 1; i >= 0; i--) {
505 outb_p(MDIO_ENB_IN, addr);
506 outb_p(MDIO_ENB_IN | MDIO_SHIFT_CLK, addr);
510 /*====================================================================*/
512 static int axnet_open(struct net_device *dev)
515 axnet_dev_t *info = PRIV(dev);
516 struct pcmcia_device *link = info->p_dev;
517 unsigned int nic_base = dev->base_addr;
519 DEBUG(2, "axnet_open('%s')\n", dev->name);
521 if (!pcmcia_dev_present(link))
524 outb_p(0xFF, nic_base + EN0_ISR); /* Clear bogus intr. */
525 ret = request_irq(dev->irq, ei_irq_wrapper, IRQF_SHARED, "axnet_cs", dev);
531 info->link_status = 0x00;
532 init_timer(&info->watchdog);
533 info->watchdog.function = &ei_watchdog;
534 info->watchdog.data = (u_long)dev;
535 info->watchdog.expires = jiffies + HZ;
536 add_timer(&info->watchdog);
541 /*====================================================================*/
543 static int axnet_close(struct net_device *dev)
545 axnet_dev_t *info = PRIV(dev);
546 struct pcmcia_device *link = info->p_dev;
548 DEBUG(2, "axnet_close('%s')\n", dev->name);
551 free_irq(dev->irq, dev);
554 netif_stop_queue(dev);
555 del_timer_sync(&info->watchdog);
560 /*======================================================================
562 Hard reset the card. This used to pause for the same period that
563 a 8390 reset command required, but that shouldn't be necessary.
565 ======================================================================*/
567 static void axnet_reset_8390(struct net_device *dev)
569 unsigned int nic_base = dev->base_addr;
572 ei_status.txing = ei_status.dmaing = 0;
574 outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, nic_base + E8390_CMD);
576 outb(inb(nic_base + AXNET_RESET), nic_base + AXNET_RESET);
578 for (i = 0; i < 100; i++) {
579 if ((inb_p(nic_base+EN0_ISR) & ENISR_RESET) != 0)
583 outb_p(ENISR_RESET, nic_base + EN0_ISR); /* Ack intr. */
586 printk(KERN_ERR "%s: axnet_reset_8390() did not complete.\n",
589 } /* axnet_reset_8390 */
591 /*====================================================================*/
593 static irqreturn_t ei_irq_wrapper(int irq, void *dev_id)
595 struct net_device *dev = dev_id;
596 PRIV(dev)->stale = 0;
597 return ax_interrupt(irq, dev_id);
600 static void ei_watchdog(u_long arg)
602 struct net_device *dev = (struct net_device *)(arg);
603 axnet_dev_t *info = PRIV(dev);
604 unsigned int nic_base = dev->base_addr;
605 unsigned int mii_addr = nic_base + AXNET_MII_EEP;
608 if (!netif_device_present(dev)) goto reschedule;
610 /* Check for pending interrupt with expired latency timer: with
611 this, we can limp along even if the interrupt is blocked */
612 if (info->stale++ && (inb_p(nic_base + EN0_ISR) & ENISR_ALL)) {
613 if (!info->fast_poll)
614 printk(KERN_INFO "%s: interrupt(s) dropped!\n", dev->name);
615 ei_irq_wrapper(dev->irq, dev);
616 info->fast_poll = HZ;
618 if (info->fast_poll) {
620 info->watchdog.expires = jiffies + 1;
621 add_timer(&info->watchdog);
625 if (info->phy_id < 0)
627 link = mdio_read(mii_addr, info->phy_id, 1);
628 if (!link || (link == 0xffff)) {
629 printk(KERN_INFO "%s: MII is missing!\n", dev->name);
635 if (link != info->link_status) {
636 u_short p = mdio_read(mii_addr, info->phy_id, 5);
637 printk(KERN_INFO "%s: %s link beat\n", dev->name,
638 (link) ? "found" : "lost");
640 info->duplex_flag = (p & 0x0140) ? 0x80 : 0x00;
642 printk(KERN_INFO "%s: autonegotiation complete: "
643 "%sbaseT-%cD selected\n", dev->name,
644 ((p & 0x0180) ? "100" : "10"),
645 ((p & 0x0140) ? 'F' : 'H'));
647 printk(KERN_INFO "%s: link partner did not autonegotiate\n",
649 AX88190_init(dev, 1);
651 info->link_status = link;
655 info->watchdog.expires = jiffies + HZ;
656 add_timer(&info->watchdog);
659 static void netdev_get_drvinfo(struct net_device *dev,
660 struct ethtool_drvinfo *info)
662 strcpy(info->driver, "axnet_cs");
665 static const struct ethtool_ops netdev_ethtool_ops = {
666 .get_drvinfo = netdev_get_drvinfo,
669 /*====================================================================*/
671 static int axnet_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
673 axnet_dev_t *info = PRIV(dev);
674 u16 *data = (u16 *)&rq->ifr_ifru;
675 unsigned int mii_addr = dev->base_addr + AXNET_MII_EEP;
678 data[0] = info->phy_id;
679 case SIOCGMIIREG: /* Read MII PHY register. */
680 data[3] = mdio_read(mii_addr, data[0], data[1] & 0x1f);
682 case SIOCSMIIREG: /* Write MII PHY register. */
683 if (!capable(CAP_NET_ADMIN))
685 mdio_write(mii_addr, data[0], data[1] & 0x1f, data[2]);
691 /*====================================================================*/
693 static void get_8390_hdr(struct net_device *dev,
694 struct e8390_pkt_hdr *hdr,
697 unsigned int nic_base = dev->base_addr;
699 outb_p(0, nic_base + EN0_RSARLO); /* On page boundary */
700 outb_p(ring_page, nic_base + EN0_RSARHI);
701 outb_p(E8390_RREAD+E8390_START, nic_base + AXNET_CMD);
703 insw(nic_base + AXNET_DATAPORT, hdr,
704 sizeof(struct e8390_pkt_hdr)>>1);
705 /* Fix for big endian systems */
706 hdr->count = le16_to_cpu(hdr->count);
710 /*====================================================================*/
712 static void block_input(struct net_device *dev, int count,
713 struct sk_buff *skb, int ring_offset)
715 unsigned int nic_base = dev->base_addr;
716 int xfer_count = count;
717 char *buf = skb->data;
720 if ((ei_debug > 4) && (count != 4))
721 printk(KERN_DEBUG "%s: [bi=%d]\n", dev->name, count+4);
723 outb_p(ring_offset & 0xff, nic_base + EN0_RSARLO);
724 outb_p(ring_offset >> 8, nic_base + EN0_RSARHI);
725 outb_p(E8390_RREAD+E8390_START, nic_base + AXNET_CMD);
727 insw(nic_base + AXNET_DATAPORT,buf,count>>1);
729 buf[count-1] = inb(nic_base + AXNET_DATAPORT), xfer_count++;
733 /*====================================================================*/
735 static void block_output(struct net_device *dev, int count,
736 const u_char *buf, const int start_page)
738 unsigned int nic_base = dev->base_addr;
742 printk(KERN_DEBUG "%s: [bo=%d]\n", dev->name, count);
745 /* Round the count up for word writes. Do we need to do this?
746 What effect will an odd byte count have on the 8390?
747 I should check someday. */
751 outb_p(0x00, nic_base + EN0_RSARLO);
752 outb_p(start_page, nic_base + EN0_RSARHI);
753 outb_p(E8390_RWRITE+E8390_START, nic_base + AXNET_CMD);
754 outsw(nic_base + AXNET_DATAPORT, buf, count>>1);
757 static struct pcmcia_device_id axnet_ids[] = {
758 PCMCIA_PFC_DEVICE_MANF_CARD(0, 0x016c, 0x0081),
759 PCMCIA_DEVICE_MANF_CARD(0x018a, 0x0301),
760 PCMCIA_DEVICE_MANF_CARD(0x026f, 0x0301),
761 PCMCIA_DEVICE_MANF_CARD(0x026f, 0x0303),
762 PCMCIA_DEVICE_MANF_CARD(0x026f, 0x0309),
763 PCMCIA_DEVICE_MANF_CARD(0x0274, 0x1106),
764 PCMCIA_DEVICE_MANF_CARD(0x8a01, 0xc1ab),
765 PCMCIA_DEVICE_MANF_CARD(0x021b, 0x0202),
766 PCMCIA_DEVICE_MANF_CARD(0xffff, 0x1090),
767 PCMCIA_DEVICE_PROD_ID12("AmbiCom,Inc.", "Fast Ethernet PC Card(AMB8110)", 0x49b020a7, 0x119cc9fc),
768 PCMCIA_DEVICE_PROD_ID124("Fast Ethernet", "16-bit PC Card", "AX88190", 0xb4be14e3, 0x9a12eb6a, 0xab9be5ef),
769 PCMCIA_DEVICE_PROD_ID12("ASIX", "AX88190", 0x0959823b, 0xab9be5ef),
770 PCMCIA_DEVICE_PROD_ID12("Billionton", "LNA-100B", 0x552ab682, 0xbc3b87e1),
771 PCMCIA_DEVICE_PROD_ID12("CHEETAH ETHERCARD", "EN2228", 0x00fa7bc8, 0x00e990cc),
772 PCMCIA_DEVICE_PROD_ID12("CNet", "CNF301", 0xbc477dde, 0x78c5f40b),
773 PCMCIA_DEVICE_PROD_ID12("corega K.K.", "corega FEther PCC-TXD", 0x5261440f, 0x436768c5),
774 PCMCIA_DEVICE_PROD_ID12("corega K.K.", "corega FEtherII PCC-TXD", 0x5261440f, 0x730df72e),
775 PCMCIA_DEVICE_PROD_ID12("Dynalink", "L100C16", 0x55632fd5, 0x66bc2a90),
776 PCMCIA_DEVICE_PROD_ID12("Linksys", "EtherFast 10/100 PC Card (PCMPC100 V3)", 0x0733cc81, 0x232019a8),
777 PCMCIA_DEVICE_PROD_ID12("MELCO", "LPC3-TX", 0x481e0094, 0xf91af609),
778 PCMCIA_DEVICE_PROD_ID12("PCMCIA", "100BASE", 0x281f1c5d, 0x7c2add04),
779 PCMCIA_DEVICE_PROD_ID12("PCMCIA", "FastEtherCard", 0x281f1c5d, 0x7ef26116),
780 PCMCIA_DEVICE_PROD_ID12("PCMCIA", "FEP501", 0x281f1c5d, 0x2e272058),
781 PCMCIA_DEVICE_PROD_ID14("Network Everywhere", "AX88190", 0x820a67b6, 0xab9be5ef),
784 MODULE_DEVICE_TABLE(pcmcia, axnet_ids);
786 static struct pcmcia_driver axnet_cs_driver = {
787 .owner = THIS_MODULE,
791 .probe = axnet_probe,
792 .remove = axnet_detach,
793 .id_table = axnet_ids,
794 .suspend = axnet_suspend,
795 .resume = axnet_resume,
798 static int __init init_axnet_cs(void)
800 return pcmcia_register_driver(&axnet_cs_driver);
803 static void __exit exit_axnet_cs(void)
805 pcmcia_unregister_driver(&axnet_cs_driver);
808 module_init(init_axnet_cs);
809 module_exit(exit_axnet_cs);
811 /*====================================================================*/
813 /* 8390.c: A general NS8390 ethernet driver core for linux. */
815 Written 1992-94 by Donald Becker.
817 Copyright 1993 United States Government as represented by the
818 Director, National Security Agency.
820 This software may be used and distributed according to the terms
821 of the GNU General Public License, incorporated herein by reference.
823 The author may be reached as becker@scyld.com, or C/O
824 Scyld Computing Corporation
825 410 Severn Ave., Suite 210
828 This is the chip-specific code for many 8390-based ethernet adaptors.
829 This is not a complete driver, it must be combined with board-specific
830 code such as ne.c, wd.c, 3c503.c, etc.
832 Seeing how at least eight drivers use this code, (not counting the
833 PCMCIA ones either) it is easy to break some card by what seems like
834 a simple innocent change. Please contact me or Donald if you think
835 you have found something that needs changing. -- PG
839 Paul Gortmaker : remove set_bit lock, other cleanups.
840 Paul Gortmaker : add ei_get_8390_hdr() so we can pass skb's to
841 ei_block_input() for eth_io_copy_and_sum().
842 Paul Gortmaker : exchange static int ei_pingpong for a #define,
843 also add better Tx error handling.
844 Paul Gortmaker : rewrite Rx overrun handling as per NS specs.
845 Alexey Kuznetsov : use the 8390's six bit hash multicast filter.
846 Paul Gortmaker : tweak ANK's above multicast changes a bit.
847 Paul Gortmaker : update packet statistics for v2.1.x
848 Alan Cox : support arbitary stupid port mappings on the
849 68K Macintosh. Support >16bit I/O spaces
850 Paul Gortmaker : add kmod support for auto-loading of the 8390
851 module by all drivers that require it.
852 Alan Cox : Spinlocking work, added 'BUG_83C690'
853 Paul Gortmaker : Separate out Tx timeout code from Tx path.
856 The National Semiconductor LAN Databook, and the 3Com 3c503 databook.
860 static const char *version_8390 =
861 "8390.c:v1.10cvs 9/23/94 Donald Becker (becker@scyld.com)\n";
863 #include <linux/bitops.h>
865 #include <linux/fcntl.h>
866 #include <linux/in.h>
867 #include <linux/interrupt.h>
869 #include <linux/etherdevice.h>
873 /* These are the operational function interfaces to board-specific
875 void reset_8390(struct net_device *dev)
876 Resets the board associated with DEV, including a hardware reset of
877 the 8390. This is only called when there is a transmit timeout, and
878 it is always followed by 8390_init().
879 void block_output(struct net_device *dev, int count, const unsigned char *buf,
881 Write the COUNT bytes of BUF to the packet buffer at START_PAGE. The
882 "page" value uses the 8390's 256-byte pages.
883 void get_8390_hdr(struct net_device *dev, struct e8390_hdr *hdr, int ring_page)
884 Read the 4 byte, page aligned 8390 header. *If* there is a
885 subsequent read, it will be of the rest of the packet.
886 void block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset)
887 Read COUNT bytes from the packet buffer into the skb data area. Start
888 reading from RING_OFFSET, the address as the 8390 sees it. This will always
889 follow the read of the 8390 header.
891 #define ei_reset_8390 (ei_local->reset_8390)
892 #define ei_block_output (ei_local->block_output)
893 #define ei_block_input (ei_local->block_input)
894 #define ei_get_8390_hdr (ei_local->get_8390_hdr)
896 /* use 0 for production, 1 for verification, >2 for debug */
901 /* Index to functions. */
902 static void ei_tx_intr(struct net_device *dev);
903 static void ei_tx_err(struct net_device *dev);
904 static void ei_tx_timeout(struct net_device *dev);
905 static void ei_receive(struct net_device *dev);
906 static void ei_rx_overrun(struct net_device *dev);
908 /* Routines generic to NS8390-based boards. */
909 static void NS8390_trigger_send(struct net_device *dev, unsigned int length,
911 static void set_multicast_list(struct net_device *dev);
912 static void do_set_multicast_list(struct net_device *dev);
915 * SMP and the 8390 setup.
917 * The 8390 isnt exactly designed to be multithreaded on RX/TX. There is
918 * a page register that controls bank and packet buffer access. We guard
919 * this with ei_local->page_lock. Nobody should assume or set the page other
920 * than zero when the lock is not held. Lock holders must restore page 0
921 * before unlocking. Even pure readers must take the lock to protect in
924 * To make life difficult the chip can also be very slow. We therefore can't
925 * just use spinlocks. For the longer lockups we disable the irq the device
926 * sits on and hold the lock. We must hold the lock because there is a dual
927 * processor case other than interrupts (get stats/set multicast list in
928 * parallel with each other and transmit).
930 * Note: in theory we can just disable the irq on the card _but_ there is
931 * a latency on SMP irq delivery. So we can easily go "disable irq" "sync irqs"
932 * enter lock, take the queued irq. So we waddle instead of flying.
934 * Finally by special arrangement for the purpose of being generally
935 * annoying the transmit function is called bh atomic. That places
936 * restrictions on the user context callers as disable_irq won't save
941 * ax_open - Open/initialize the board.
942 * @dev: network device to initialize
944 * This routine goes all-out, setting everything
945 * up anew at each open, even though many of these registers should only
946 * need to be set once at boot.
948 static int ax_open(struct net_device *dev)
951 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
953 #ifdef HAVE_TX_TIMEOUT
954 /* The card I/O part of the driver (e.g. 3c503) can hook a Tx timeout
955 wrapper that does e.g. media check & then calls ei_tx_timeout. */
956 if (dev->tx_timeout == NULL)
957 dev->tx_timeout = ei_tx_timeout;
958 if (dev->watchdog_timeo <= 0)
959 dev->watchdog_timeo = TX_TIMEOUT;
963 * Grab the page lock so we own the register set, then call
967 spin_lock_irqsave(&ei_local->page_lock, flags);
968 AX88190_init(dev, 1);
969 /* Set the flag before we drop the lock, That way the IRQ arrives
970 after its set and we get no silly warnings */
971 netif_start_queue(dev);
972 spin_unlock_irqrestore(&ei_local->page_lock, flags);
973 ei_local->irqlock = 0;
977 #define dev_lock(dev) (((struct ei_device *)netdev_priv(dev))->page_lock)
980 * ax_close - shut down network device
981 * @dev: network device to close
983 * Opposite of ax_open(). Only used when "ifconfig <devname> down" is done.
985 static int ax_close(struct net_device *dev)
990 * Hold the page lock during close
993 spin_lock_irqsave(&dev_lock(dev), flags);
994 AX88190_init(dev, 0);
995 spin_unlock_irqrestore(&dev_lock(dev), flags);
996 netif_stop_queue(dev);
1001 * ei_tx_timeout - handle transmit time out condition
1002 * @dev: network device which has apparently fallen asleep
1004 * Called by kernel when device never acknowledges a transmit has
1005 * completed (or failed) - i.e. never posted a Tx related interrupt.
1008 static void ei_tx_timeout(struct net_device *dev)
1010 long e8390_base = dev->base_addr;
1011 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1012 int txsr, isr, tickssofar = jiffies - dev->trans_start;
1013 unsigned long flags;
1015 dev->stats.tx_errors++;
1017 spin_lock_irqsave(&ei_local->page_lock, flags);
1018 txsr = inb(e8390_base+EN0_TSR);
1019 isr = inb(e8390_base+EN0_ISR);
1020 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1022 printk(KERN_DEBUG "%s: Tx timed out, %s TSR=%#2x, ISR=%#2x, t=%d.\n",
1023 dev->name, (txsr & ENTSR_ABT) ? "excess collisions." :
1024 (isr) ? "lost interrupt?" : "cable problem?", txsr, isr, tickssofar);
1026 if (!isr && !dev->stats.tx_packets)
1028 /* The 8390 probably hasn't gotten on the cable yet. */
1029 ei_local->interface_num ^= 1; /* Try a different xcvr. */
1032 /* Ugly but a reset can be slow, yet must be protected */
1034 spin_lock_irqsave(&ei_local->page_lock, flags);
1036 /* Try to restart the card. Perhaps the user has fixed something. */
1038 AX88190_init(dev, 1);
1040 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1041 netif_wake_queue(dev);
1045 * ei_start_xmit - begin packet transmission
1046 * @skb: packet to be sent
1047 * @dev: network device to which packet is sent
1049 * Sends a packet to an 8390 network device.
1052 static int ei_start_xmit(struct sk_buff *skb, struct net_device *dev)
1054 long e8390_base = dev->base_addr;
1055 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1056 int length, send_length, output_page;
1057 unsigned long flags;
1058 u8 packet[ETH_ZLEN];
1060 netif_stop_queue(dev);
1064 /* Mask interrupts from the ethercard.
1065 SMP: We have to grab the lock here otherwise the IRQ handler
1066 on another CPU can flip window and race the IRQ mask set. We end
1067 up trashing the mcast filter not disabling irqs if we don't lock */
1069 spin_lock_irqsave(&ei_local->page_lock, flags);
1070 outb_p(0x00, e8390_base + EN0_IMR);
1071 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1074 * Slow phase with lock held.
1077 spin_lock_irqsave(&ei_local->page_lock, flags);
1079 ei_local->irqlock = 1;
1081 send_length = max(length, ETH_ZLEN);
1084 * We have two Tx slots available for use. Find the first free
1085 * slot, and then perform some sanity checks. With two Tx bufs,
1086 * you get very close to transmitting back-to-back packets. With
1087 * only one Tx buf, the transmitter sits idle while you reload the
1088 * card, leaving a substantial gap between each transmitted packet.
1091 if (ei_local->tx1 == 0)
1093 output_page = ei_local->tx_start_page;
1094 ei_local->tx1 = send_length;
1095 if (ei_debug && ei_local->tx2 > 0)
1096 printk(KERN_DEBUG "%s: idle transmitter tx2=%d, lasttx=%d, txing=%d.\n",
1097 dev->name, ei_local->tx2, ei_local->lasttx, ei_local->txing);
1099 else if (ei_local->tx2 == 0)
1101 output_page = ei_local->tx_start_page + TX_PAGES/2;
1102 ei_local->tx2 = send_length;
1103 if (ei_debug && ei_local->tx1 > 0)
1104 printk(KERN_DEBUG "%s: idle transmitter, tx1=%d, lasttx=%d, txing=%d.\n",
1105 dev->name, ei_local->tx1, ei_local->lasttx, ei_local->txing);
1108 { /* We should never get here. */
1110 printk(KERN_DEBUG "%s: No Tx buffers free! tx1=%d tx2=%d last=%d\n",
1111 dev->name, ei_local->tx1, ei_local->tx2, ei_local->lasttx);
1112 ei_local->irqlock = 0;
1113 netif_stop_queue(dev);
1114 outb_p(ENISR_ALL, e8390_base + EN0_IMR);
1115 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1116 dev->stats.tx_errors++;
1121 * Okay, now upload the packet and trigger a send if the transmitter
1122 * isn't already sending. If it is busy, the interrupt handler will
1123 * trigger the send later, upon receiving a Tx done interrupt.
1126 if (length == skb->len)
1127 ei_block_output(dev, length, skb->data, output_page);
1129 memset(packet, 0, ETH_ZLEN);
1130 skb_copy_from_linear_data(skb, packet, skb->len);
1131 ei_block_output(dev, length, packet, output_page);
1134 if (! ei_local->txing)
1136 ei_local->txing = 1;
1137 NS8390_trigger_send(dev, send_length, output_page);
1138 dev->trans_start = jiffies;
1139 if (output_page == ei_local->tx_start_page)
1142 ei_local->lasttx = -1;
1147 ei_local->lasttx = -2;
1150 else ei_local->txqueue++;
1152 if (ei_local->tx1 && ei_local->tx2)
1153 netif_stop_queue(dev);
1155 netif_start_queue(dev);
1157 /* Turn 8390 interrupts back on. */
1158 ei_local->irqlock = 0;
1159 outb_p(ENISR_ALL, e8390_base + EN0_IMR);
1161 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1163 dev_kfree_skb (skb);
1164 dev->stats.tx_bytes += send_length;
1170 * ax_interrupt - handle the interrupts from an 8390
1171 * @irq: interrupt number
1172 * @dev_id: a pointer to the net_device
1175 * Handle the ether interface interrupts. We pull packets from
1176 * the 8390 via the card specific functions and fire them at the networking
1177 * stack. We also handle transmit completions and wake the transmit path if
1178 * necessary. We also update the counters and do other housekeeping as
1182 static irqreturn_t ax_interrupt(int irq, void *dev_id)
1184 struct net_device *dev = dev_id;
1186 int interrupts, nr_serviced = 0, i;
1187 struct ei_device *ei_local;
1190 e8390_base = dev->base_addr;
1191 ei_local = netdev_priv(dev);
1194 * Protect the irq test too.
1197 spin_lock(&ei_local->page_lock);
1199 if (ei_local->irqlock)
1201 #if 1 /* This might just be an interrupt for a PCI device sharing this line */
1202 /* The "irqlock" check is only for testing. */
1203 printk(ei_local->irqlock
1204 ? "%s: Interrupted while interrupts are masked! isr=%#2x imr=%#2x.\n"
1205 : "%s: Reentering the interrupt handler! isr=%#2x imr=%#2x.\n",
1206 dev->name, inb_p(e8390_base + EN0_ISR),
1207 inb_p(e8390_base + EN0_IMR));
1209 spin_unlock(&ei_local->page_lock);
1214 printk(KERN_DEBUG "%s: interrupt(isr=%#2.2x).\n", dev->name,
1215 inb_p(e8390_base + EN0_ISR));
1217 outb_p(0x00, e8390_base + EN0_ISR);
1218 ei_local->irqlock = 1;
1220 /* !!Assumption!! -- we stay in page 0. Don't break this. */
1221 while ((interrupts = inb_p(e8390_base + EN0_ISR)) != 0
1222 && ++nr_serviced < MAX_SERVICE)
1224 if (!netif_running(dev) || (interrupts == 0xff)) {
1226 printk(KERN_WARNING "%s: interrupt from stopped card\n", dev->name);
1227 outb_p(interrupts, e8390_base + EN0_ISR);
1233 /* AX88190 bug fix. */
1234 outb_p(interrupts, e8390_base + EN0_ISR);
1235 for (i = 0; i < 10; i++) {
1236 if (!(inb(e8390_base + EN0_ISR) & interrupts))
1238 outb_p(0, e8390_base + EN0_ISR);
1239 outb_p(interrupts, e8390_base + EN0_ISR);
1241 if (interrupts & ENISR_OVER)
1243 else if (interrupts & (ENISR_RX+ENISR_RX_ERR))
1245 /* Got a good (?) packet. */
1248 /* Push the next to-transmit packet through. */
1249 if (interrupts & ENISR_TX)
1251 else if (interrupts & ENISR_TX_ERR)
1254 if (interrupts & ENISR_COUNTERS)
1256 dev->stats.rx_frame_errors += inb_p(e8390_base + EN0_COUNTER0);
1257 dev->stats.rx_crc_errors += inb_p(e8390_base + EN0_COUNTER1);
1258 dev->stats.rx_missed_errors+= inb_p(e8390_base + EN0_COUNTER2);
1262 if (interrupts && ei_debug > 3)
1265 if (nr_serviced >= MAX_SERVICE)
1267 /* 0xFF is valid for a card removal */
1268 if(interrupts!=0xFF)
1269 printk(KERN_WARNING "%s: Too much work at interrupt, status %#2.2x\n",
1270 dev->name, interrupts);
1271 outb_p(ENISR_ALL, e8390_base + EN0_ISR); /* Ack. most intrs. */
1273 printk(KERN_WARNING "%s: unknown interrupt %#2x\n", dev->name, interrupts);
1274 outb_p(0xff, e8390_base + EN0_ISR); /* Ack. all intrs. */
1278 /* Turn 8390 interrupts back on. */
1279 ei_local->irqlock = 0;
1280 outb_p(ENISR_ALL, e8390_base + EN0_IMR);
1282 spin_unlock(&ei_local->page_lock);
1283 return IRQ_RETVAL(handled);
1287 * ei_tx_err - handle transmitter error
1288 * @dev: network device which threw the exception
1290 * A transmitter error has happened. Most likely excess collisions (which
1291 * is a fairly normal condition). If the error is one where the Tx will
1292 * have been aborted, we try and send another one right away, instead of
1293 * letting the failed packet sit and collect dust in the Tx buffer. This
1294 * is a much better solution as it avoids kernel based Tx timeouts, and
1295 * an unnecessary card reset.
1297 * Called with lock held.
1300 static void ei_tx_err(struct net_device *dev)
1302 long e8390_base = dev->base_addr;
1303 unsigned char txsr = inb_p(e8390_base+EN0_TSR);
1304 unsigned char tx_was_aborted = txsr & (ENTSR_ABT+ENTSR_FU);
1306 #ifdef VERBOSE_ERROR_DUMP
1307 printk(KERN_DEBUG "%s: transmitter error (%#2x): ", dev->name, txsr);
1308 if (txsr & ENTSR_ABT)
1309 printk("excess-collisions ");
1310 if (txsr & ENTSR_ND)
1311 printk("non-deferral ");
1312 if (txsr & ENTSR_CRS)
1313 printk("lost-carrier ");
1314 if (txsr & ENTSR_FU)
1315 printk("FIFO-underrun ");
1316 if (txsr & ENTSR_CDH)
1317 printk("lost-heartbeat ");
1325 dev->stats.tx_errors++;
1326 if (txsr & ENTSR_CRS) dev->stats.tx_carrier_errors++;
1327 if (txsr & ENTSR_CDH) dev->stats.tx_heartbeat_errors++;
1328 if (txsr & ENTSR_OWC) dev->stats.tx_window_errors++;
1333 * ei_tx_intr - transmit interrupt handler
1334 * @dev: network device for which tx intr is handled
1336 * We have finished a transmit: check for errors and then trigger the next
1337 * packet to be sent. Called with lock held.
1340 static void ei_tx_intr(struct net_device *dev)
1342 long e8390_base = dev->base_addr;
1343 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1344 int status = inb(e8390_base + EN0_TSR);
1347 * There are two Tx buffers, see which one finished, and trigger
1348 * the send of another one if it exists.
1350 ei_local->txqueue--;
1352 if (ei_local->tx1 < 0)
1354 if (ei_local->lasttx != 1 && ei_local->lasttx != -1)
1355 printk(KERN_ERR "%s: bogus last_tx_buffer %d, tx1=%d.\n",
1356 ei_local->name, ei_local->lasttx, ei_local->tx1);
1358 if (ei_local->tx2 > 0)
1360 ei_local->txing = 1;
1361 NS8390_trigger_send(dev, ei_local->tx2, ei_local->tx_start_page + 6);
1362 dev->trans_start = jiffies;
1364 ei_local->lasttx = 2;
1366 else ei_local->lasttx = 20, ei_local->txing = 0;
1368 else if (ei_local->tx2 < 0)
1370 if (ei_local->lasttx != 2 && ei_local->lasttx != -2)
1371 printk("%s: bogus last_tx_buffer %d, tx2=%d.\n",
1372 ei_local->name, ei_local->lasttx, ei_local->tx2);
1374 if (ei_local->tx1 > 0)
1376 ei_local->txing = 1;
1377 NS8390_trigger_send(dev, ei_local->tx1, ei_local->tx_start_page);
1378 dev->trans_start = jiffies;
1380 ei_local->lasttx = 1;
1383 ei_local->lasttx = 10, ei_local->txing = 0;
1385 // else printk(KERN_WARNING "%s: unexpected TX-done interrupt, lasttx=%d.\n",
1386 // dev->name, ei_local->lasttx);
1388 /* Minimize Tx latency: update the statistics after we restart TXing. */
1389 if (status & ENTSR_COL)
1390 dev->stats.collisions++;
1391 if (status & ENTSR_PTX)
1392 dev->stats.tx_packets++;
1395 dev->stats.tx_errors++;
1396 if (status & ENTSR_ABT)
1398 dev->stats.tx_aborted_errors++;
1399 dev->stats.collisions += 16;
1401 if (status & ENTSR_CRS)
1402 dev->stats.tx_carrier_errors++;
1403 if (status & ENTSR_FU)
1404 dev->stats.tx_fifo_errors++;
1405 if (status & ENTSR_CDH)
1406 dev->stats.tx_heartbeat_errors++;
1407 if (status & ENTSR_OWC)
1408 dev->stats.tx_window_errors++;
1410 netif_wake_queue(dev);
1414 * ei_receive - receive some packets
1415 * @dev: network device with which receive will be run
1417 * We have a good packet(s), get it/them out of the buffers.
1418 * Called with lock held.
1421 static void ei_receive(struct net_device *dev)
1423 long e8390_base = dev->base_addr;
1424 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1425 unsigned char rxing_page, this_frame, next_frame;
1426 unsigned short current_offset;
1427 int rx_pkt_count = 0;
1428 struct e8390_pkt_hdr rx_frame;
1430 while (++rx_pkt_count < 10)
1432 int pkt_len, pkt_stat;
1434 /* Get the rx page (incoming packet pointer). */
1435 rxing_page = inb_p(e8390_base + EN1_CURPAG -1);
1437 /* Remove one frame from the ring. Boundary is always a page behind. */
1438 this_frame = inb_p(e8390_base + EN0_BOUNDARY) + 1;
1439 if (this_frame >= ei_local->stop_page)
1440 this_frame = ei_local->rx_start_page;
1442 /* Someday we'll omit the previous, iff we never get this message.
1443 (There is at least one clone claimed to have a problem.)
1445 Keep quiet if it looks like a card removal. One problem here
1446 is that some clones crash in roughly the same way.
1448 if (ei_debug > 0 && this_frame != ei_local->current_page && (this_frame!=0x0 || rxing_page!=0xFF))
1449 printk(KERN_ERR "%s: mismatched read page pointers %2x vs %2x.\n",
1450 dev->name, this_frame, ei_local->current_page);
1452 if (this_frame == rxing_page) /* Read all the frames? */
1453 break; /* Done for now */
1455 current_offset = this_frame << 8;
1456 ei_get_8390_hdr(dev, &rx_frame, this_frame);
1458 pkt_len = rx_frame.count - sizeof(struct e8390_pkt_hdr);
1459 pkt_stat = rx_frame.status;
1461 next_frame = this_frame + 1 + ((pkt_len+4)>>8);
1463 if (pkt_len < 60 || pkt_len > 1518)
1466 printk(KERN_DEBUG "%s: bogus packet size: %d, status=%#2x nxpg=%#2x.\n",
1467 dev->name, rx_frame.count, rx_frame.status,
1469 dev->stats.rx_errors++;
1470 dev->stats.rx_length_errors++;
1472 else if ((pkt_stat & 0x0F) == ENRSR_RXOK)
1474 struct sk_buff *skb;
1476 skb = dev_alloc_skb(pkt_len+2);
1480 printk(KERN_DEBUG "%s: Couldn't allocate a sk_buff of size %d.\n",
1481 dev->name, pkt_len);
1482 dev->stats.rx_dropped++;
1487 skb_reserve(skb,2); /* IP headers on 16 byte boundaries */
1488 skb_put(skb, pkt_len); /* Make room */
1489 ei_block_input(dev, pkt_len, skb, current_offset + sizeof(rx_frame));
1490 skb->protocol=eth_type_trans(skb,dev);
1492 dev->last_rx = jiffies;
1493 dev->stats.rx_packets++;
1494 dev->stats.rx_bytes += pkt_len;
1495 if (pkt_stat & ENRSR_PHY)
1496 dev->stats.multicast++;
1502 printk(KERN_DEBUG "%s: bogus packet: status=%#2x nxpg=%#2x size=%d\n",
1503 dev->name, rx_frame.status, rx_frame.next,
1505 dev->stats.rx_errors++;
1506 /* NB: The NIC counts CRC, frame and missed errors. */
1507 if (pkt_stat & ENRSR_FO)
1508 dev->stats.rx_fifo_errors++;
1510 next_frame = rx_frame.next;
1512 /* This _should_ never happen: it's here for avoiding bad clones. */
1513 if (next_frame >= ei_local->stop_page) {
1514 printk("%s: next frame inconsistency, %#2x\n", dev->name,
1516 next_frame = ei_local->rx_start_page;
1518 ei_local->current_page = next_frame;
1519 outb_p(next_frame-1, e8390_base+EN0_BOUNDARY);
1526 * ei_rx_overrun - handle receiver overrun
1527 * @dev: network device which threw exception
1529 * We have a receiver overrun: we have to kick the 8390 to get it started
1530 * again. Problem is that you have to kick it exactly as NS prescribes in
1531 * the updated datasheets, or "the NIC may act in an unpredictable manner."
1532 * This includes causing "the NIC to defer indefinitely when it is stopped
1533 * on a busy network." Ugh.
1534 * Called with lock held. Don't call this with the interrupts off or your
1535 * computer will hate you - it takes 10ms or so.
1538 static void ei_rx_overrun(struct net_device *dev)
1540 axnet_dev_t *info = PRIV(dev);
1541 long e8390_base = dev->base_addr;
1542 unsigned char was_txing, must_resend = 0;
1545 * Record whether a Tx was in progress and then issue the
1548 was_txing = inb_p(e8390_base+E8390_CMD) & E8390_TRANS;
1549 outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD);
1552 printk(KERN_DEBUG "%s: Receiver overrun.\n", dev->name);
1553 dev->stats.rx_over_errors++;
1556 * Wait a full Tx time (1.2ms) + some guard time, NS says 1.6ms total.
1557 * Early datasheets said to poll the reset bit, but now they say that
1558 * it "is not a reliable indicator and subsequently should be ignored."
1559 * We wait at least 10ms.
1565 * Reset RBCR[01] back to zero as per magic incantation.
1567 outb_p(0x00, e8390_base+EN0_RCNTLO);
1568 outb_p(0x00, e8390_base+EN0_RCNTHI);
1571 * See if any Tx was interrupted or not. According to NS, this
1572 * step is vital, and skipping it will cause no end of havoc.
1577 unsigned char tx_completed = inb_p(e8390_base+EN0_ISR) & (ENISR_TX+ENISR_TX_ERR);
1583 * Have to enter loopback mode and then restart the NIC before
1584 * you are allowed to slurp packets up off the ring.
1586 outb_p(E8390_TXOFF, e8390_base + EN0_TXCR);
1587 outb_p(E8390_NODMA + E8390_PAGE0 + E8390_START, e8390_base + E8390_CMD);
1590 * Clear the Rx ring of all the debris, and ack the interrupt.
1595 * Leave loopback mode, and resend any packet that got stopped.
1597 outb_p(E8390_TXCONFIG | info->duplex_flag, e8390_base + EN0_TXCR);
1599 outb_p(E8390_NODMA + E8390_PAGE0 + E8390_START + E8390_TRANS, e8390_base + E8390_CMD);
1603 * Collect the stats. This is called unlocked and from several contexts.
1606 static struct net_device_stats *get_stats(struct net_device *dev)
1608 long ioaddr = dev->base_addr;
1609 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1610 unsigned long flags;
1612 /* If the card is stopped, just return the present stats. */
1613 if (!netif_running(dev))
1616 spin_lock_irqsave(&ei_local->page_lock,flags);
1617 /* Read the counter registers, assuming we are in page 0. */
1618 dev->stats.rx_frame_errors += inb_p(ioaddr + EN0_COUNTER0);
1619 dev->stats.rx_crc_errors += inb_p(ioaddr + EN0_COUNTER1);
1620 dev->stats.rx_missed_errors+= inb_p(ioaddr + EN0_COUNTER2);
1621 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1627 * Form the 64 bit 8390 multicast table from the linked list of addresses
1628 * associated with this dev structure.
1631 static inline void make_mc_bits(u8 *bits, struct net_device *dev)
1633 struct dev_mc_list *dmi;
1636 for (dmi=dev->mc_list; dmi; dmi=dmi->next) {
1638 crc = ether_crc(ETH_ALEN, dmi->dmi_addr);
1640 * The 8390 uses the 6 most significant bits of the
1641 * CRC to index the multicast table.
1643 bits[crc>>29] |= (1<<((crc>>26)&7));
1648 * do_set_multicast_list - set/clear multicast filter
1649 * @dev: net device for which multicast filter is adjusted
1651 * Set or clear the multicast filter for this adaptor.
1652 * Must be called with lock held.
1655 static void do_set_multicast_list(struct net_device *dev)
1657 long e8390_base = dev->base_addr;
1659 struct ei_device *ei_local = (struct ei_device*)netdev_priv(dev);
1661 if (!(dev->flags&(IFF_PROMISC|IFF_ALLMULTI))) {
1662 memset(ei_local->mcfilter, 0, 8);
1664 make_mc_bits(ei_local->mcfilter, dev);
1666 /* set to accept-all */
1667 memset(ei_local->mcfilter, 0xFF, 8);
1670 outb_p(E8390_NODMA + E8390_PAGE1, e8390_base + E8390_CMD);
1671 for(i = 0; i < 8; i++)
1673 outb_p(ei_local->mcfilter[i], e8390_base + EN1_MULT_SHIFT(i));
1675 outb_p(E8390_NODMA + E8390_PAGE0, e8390_base + E8390_CMD);
1677 if(dev->flags&IFF_PROMISC)
1678 outb_p(E8390_RXCONFIG | 0x58, e8390_base + EN0_RXCR);
1679 else if(dev->flags&IFF_ALLMULTI || dev->mc_list)
1680 outb_p(E8390_RXCONFIG | 0x48, e8390_base + EN0_RXCR);
1682 outb_p(E8390_RXCONFIG | 0x40, e8390_base + EN0_RXCR);
1684 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, e8390_base+E8390_CMD);
1688 * Called without lock held. This is invoked from user context and may
1689 * be parallel to just about everything else. Its also fairly quick and
1690 * not called too often. Must protect against both bh and irq users
1693 static void set_multicast_list(struct net_device *dev)
1695 unsigned long flags;
1697 spin_lock_irqsave(&dev_lock(dev), flags);
1698 do_set_multicast_list(dev);
1699 spin_unlock_irqrestore(&dev_lock(dev), flags);
1703 * axdev_setup - init rest of 8390 device struct
1704 * @dev: network device structure to init
1706 * Initialize the rest of the 8390 device structure. Do NOT __init
1707 * this, as it is used by 8390 based modular drivers too.
1710 static void axdev_setup(struct net_device *dev)
1712 struct ei_device *ei_local;
1714 printk(version_8390);
1716 ei_local = (struct ei_device *)netdev_priv(dev);
1717 spin_lock_init(&ei_local->page_lock);
1719 dev->hard_start_xmit = &ei_start_xmit;
1720 dev->get_stats = get_stats;
1721 dev->set_multicast_list = &set_multicast_list;
1726 /* This page of functions should be 8390 generic */
1727 /* Follow National Semi's recommendations for initializing the "NIC". */
1730 * AX88190_init - initialize 8390 hardware
1731 * @dev: network device to initialize
1732 * @startp: boolean. non-zero value to initiate chip processing
1734 * Must be called with lock held.
1737 static void AX88190_init(struct net_device *dev, int startp)
1739 axnet_dev_t *info = PRIV(dev);
1740 long e8390_base = dev->base_addr;
1741 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1743 int endcfg = ei_local->word16 ? (0x48 | ENDCFG_WTS) : 0x48;
1745 if(sizeof(struct e8390_pkt_hdr)!=4)
1746 panic("8390.c: header struct mispacked\n");
1747 /* Follow National Semi's recommendations for initing the DP83902. */
1748 outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD); /* 0x21 */
1749 outb_p(endcfg, e8390_base + EN0_DCFG); /* 0x48 or 0x49 */
1750 /* Clear the remote byte count registers. */
1751 outb_p(0x00, e8390_base + EN0_RCNTLO);
1752 outb_p(0x00, e8390_base + EN0_RCNTHI);
1753 /* Set to monitor and loopback mode -- this is vital!. */
1754 outb_p(E8390_RXOFF|0x40, e8390_base + EN0_RXCR); /* 0x60 */
1755 outb_p(E8390_TXOFF, e8390_base + EN0_TXCR); /* 0x02 */
1756 /* Set the transmit page and receive ring. */
1757 outb_p(ei_local->tx_start_page, e8390_base + EN0_TPSR);
1758 ei_local->tx1 = ei_local->tx2 = 0;
1759 outb_p(ei_local->rx_start_page, e8390_base + EN0_STARTPG);
1760 outb_p(ei_local->stop_page-1, e8390_base + EN0_BOUNDARY); /* 3c503 says 0x3f,NS0x26*/
1761 ei_local->current_page = ei_local->rx_start_page; /* assert boundary+1 */
1762 outb_p(ei_local->stop_page, e8390_base + EN0_STOPPG);
1763 /* Clear the pending interrupts and mask. */
1764 outb_p(0xFF, e8390_base + EN0_ISR);
1765 outb_p(0x00, e8390_base + EN0_IMR);
1767 /* Copy the station address into the DS8390 registers. */
1769 outb_p(E8390_NODMA + E8390_PAGE1 + E8390_STOP, e8390_base+E8390_CMD); /* 0x61 */
1770 for(i = 0; i < 6; i++)
1772 outb_p(dev->dev_addr[i], e8390_base + EN1_PHYS_SHIFT(i));
1773 if(inb_p(e8390_base + EN1_PHYS_SHIFT(i))!=dev->dev_addr[i])
1774 printk(KERN_ERR "Hw. address read/write mismap %d\n",i);
1777 outb_p(ei_local->rx_start_page, e8390_base + EN1_CURPAG);
1778 outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD);
1780 netif_start_queue(dev);
1781 ei_local->tx1 = ei_local->tx2 = 0;
1782 ei_local->txing = 0;
1786 outb_p(0xff, e8390_base + EN0_ISR);
1787 outb_p(ENISR_ALL, e8390_base + EN0_IMR);
1788 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, e8390_base+E8390_CMD);
1789 outb_p(E8390_TXCONFIG | info->duplex_flag,
1790 e8390_base + EN0_TXCR); /* xmit on. */
1791 /* 3c503 TechMan says rxconfig only after the NIC is started. */
1792 outb_p(E8390_RXCONFIG | 0x40, e8390_base + EN0_RXCR); /* rx on, */
1793 do_set_multicast_list(dev); /* (re)load the mcast table */
1797 /* Trigger a transmit start, assuming the length is valid.
1798 Always called with the page lock held */
1800 static void NS8390_trigger_send(struct net_device *dev, unsigned int length,
1803 long e8390_base = dev->base_addr;
1804 struct ei_device *ei_local __attribute((unused)) = (struct ei_device *) netdev_priv(dev);
1806 if (inb_p(e8390_base) & E8390_TRANS)
1808 printk(KERN_WARNING "%s: trigger_send() called with the transmitter busy.\n",
1812 outb_p(length & 0xff, e8390_base + EN0_TCNTLO);
1813 outb_p(length >> 8, e8390_base + EN0_TCNTHI);
1814 outb_p(start_page, e8390_base + EN0_TPSR);
1815 outb_p(E8390_NODMA+E8390_TRANS+E8390_START, e8390_base+E8390_CMD);