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,
289 cistpl_cftable_entry_t *dflt,
294 cistpl_io_t *io = &cfg->io;
296 if (cfg->index == 0 || cfg->io.nwin == 0)
299 p_dev->conf.ConfigIndex = 0x05;
300 /* For multifunction cards, by convention, we configure the
301 network function with window 0, and serial with window 1 */
303 i = (io->win[1].len > io->win[0].len);
304 p_dev->io.BasePort2 = io->win[1-i].base;
305 p_dev->io.NumPorts2 = io->win[1-i].len;
307 i = p_dev->io.NumPorts2 = 0;
309 p_dev->io.BasePort1 = io->win[i].base;
310 p_dev->io.NumPorts1 = io->win[i].len;
311 p_dev->io.IOAddrLines = io->flags & CISTPL_IO_LINES_MASK;
312 if (p_dev->io.NumPorts1 + p_dev->io.NumPorts2 >= 32)
313 return try_io_port(p_dev);
318 static int axnet_config(struct pcmcia_device *link)
320 struct net_device *dev = link->priv;
321 axnet_dev_t *info = PRIV(dev);
322 int i, j, last_ret, last_fn;
323 DECLARE_MAC_BUF(mac);
325 DEBUG(0, "axnet_config(0x%p)\n", link);
327 /* don't trust the CIS on this; Linksys got it wrong */
328 link->conf.Present = 0x63;
329 last_ret = pcmcia_loop_config(link, axnet_configcheck, NULL);
330 if (last_ret != CS_SUCCESS) {
331 cs_error(link, RequestIO, last_ret);
335 CS_CHECK(RequestIRQ, pcmcia_request_irq(link, &link->irq));
337 if (link->io.NumPorts2 == 8) {
338 link->conf.Attributes |= CONF_ENABLE_SPKR;
339 link->conf.Status = CCSR_AUDIO_ENA;
342 CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link, &link->conf));
343 dev->irq = link->irq.AssignedIRQ;
344 dev->base_addr = link->io.BasePort1;
346 if (!get_prom(link)) {
347 printk(KERN_NOTICE "axnet_cs: this is not an AX88190 card!\n");
348 printk(KERN_NOTICE "axnet_cs: use pcnet_cs instead.\n");
352 ei_status.name = "AX88190";
353 ei_status.word16 = 1;
354 ei_status.tx_start_page = AXNET_START_PG;
355 ei_status.rx_start_page = AXNET_START_PG + TX_PAGES;
356 ei_status.stop_page = AXNET_STOP_PG;
357 ei_status.reset_8390 = &axnet_reset_8390;
358 ei_status.get_8390_hdr = &get_8390_hdr;
359 ei_status.block_input = &block_input;
360 ei_status.block_output = &block_output;
362 if (inb(dev->base_addr + AXNET_TEST) != 0)
363 info->flags |= IS_AX88790;
365 info->flags |= IS_AX88190;
367 if (info->flags & IS_AX88790)
368 outb(0x10, dev->base_addr + AXNET_GPIO); /* select Internal PHY */
370 for (i = 0; i < 32; i++) {
371 j = mdio_read(dev->base_addr + AXNET_MII_EEP, i, 1);
372 if ((j != 0) && (j != 0xffff)) break;
375 /* Maybe PHY is in power down mode. (PPD_SET = 1)
376 Bit 2 of CCSR is active low. */
378 conf_reg_t reg = { 0, CS_WRITE, CISREG_CCSR, 0x04 };
379 pcmcia_access_configuration_register(link, ®);
380 for (i = 0; i < 32; i++) {
381 j = mdio_read(dev->base_addr + AXNET_MII_EEP, i, 1);
382 if ((j != 0) && (j != 0xffff)) break;
386 info->phy_id = (i < 32) ? i : -1;
387 link->dev_node = &info->node;
388 SET_NETDEV_DEV(dev, &handle_to_dev(link));
390 if (register_netdev(dev) != 0) {
391 printk(KERN_NOTICE "axnet_cs: register_netdev() failed\n");
392 link->dev_node = NULL;
396 strcpy(info->node.dev_name, dev->name);
398 printk(KERN_INFO "%s: Asix AX88%d90: io %#3lx, irq %d, "
400 dev->name, ((info->flags & IS_AX88790) ? 7 : 1),
401 dev->base_addr, dev->irq,
402 print_mac(mac, dev->dev_addr));
403 if (info->phy_id != -1) {
404 DEBUG(0, " MII transceiver at index %d, status %x.\n", info->phy_id, j);
406 printk(KERN_NOTICE " No MII transceivers found!\n");
411 cs_error(link, last_fn, last_ret);
417 /*======================================================================
419 After a card is removed, axnet_release() will unregister the net
420 device, and release the PCMCIA configuration. If the device is
421 still open, this will be postponed until it is closed.
423 ======================================================================*/
425 static void axnet_release(struct pcmcia_device *link)
427 pcmcia_disable_device(link);
430 static int axnet_suspend(struct pcmcia_device *link)
432 struct net_device *dev = link->priv;
435 netif_device_detach(dev);
440 static int axnet_resume(struct pcmcia_device *link)
442 struct net_device *dev = link->priv;
445 axnet_reset_8390(dev);
446 AX88190_init(dev, 1);
447 netif_device_attach(dev);
454 /*======================================================================
456 MII interface support
458 ======================================================================*/
460 #define MDIO_SHIFT_CLK 0x01
461 #define MDIO_DATA_WRITE0 0x00
462 #define MDIO_DATA_WRITE1 0x08
463 #define MDIO_DATA_READ 0x04
464 #define MDIO_MASK 0x0f
465 #define MDIO_ENB_IN 0x02
467 static void mdio_sync(unsigned int addr)
470 for (bits = 0; bits < 32; bits++) {
471 outb_p(MDIO_DATA_WRITE1, addr);
472 outb_p(MDIO_DATA_WRITE1 | MDIO_SHIFT_CLK, addr);
476 static int mdio_read(unsigned int addr, int phy_id, int loc)
478 u_int cmd = (0xf6<<10)|(phy_id<<5)|loc;
482 for (i = 14; i >= 0; i--) {
483 int dat = (cmd&(1<<i)) ? MDIO_DATA_WRITE1 : MDIO_DATA_WRITE0;
485 outb_p(dat | MDIO_SHIFT_CLK, addr);
487 for (i = 19; i > 0; i--) {
488 outb_p(MDIO_ENB_IN, addr);
489 retval = (retval << 1) | ((inb_p(addr) & MDIO_DATA_READ) != 0);
490 outb_p(MDIO_ENB_IN | MDIO_SHIFT_CLK, addr);
492 return (retval>>1) & 0xffff;
495 static void mdio_write(unsigned int addr, int phy_id, int loc, int value)
497 u_int cmd = (0x05<<28)|(phy_id<<23)|(loc<<18)|(1<<17)|value;
501 for (i = 31; i >= 0; i--) {
502 int dat = (cmd&(1<<i)) ? MDIO_DATA_WRITE1 : MDIO_DATA_WRITE0;
504 outb_p(dat | MDIO_SHIFT_CLK, addr);
506 for (i = 1; i >= 0; i--) {
507 outb_p(MDIO_ENB_IN, addr);
508 outb_p(MDIO_ENB_IN | MDIO_SHIFT_CLK, addr);
512 /*====================================================================*/
514 static int axnet_open(struct net_device *dev)
517 axnet_dev_t *info = PRIV(dev);
518 struct pcmcia_device *link = info->p_dev;
519 unsigned int nic_base = dev->base_addr;
521 DEBUG(2, "axnet_open('%s')\n", dev->name);
523 if (!pcmcia_dev_present(link))
526 outb_p(0xFF, nic_base + EN0_ISR); /* Clear bogus intr. */
527 ret = request_irq(dev->irq, ei_irq_wrapper, IRQF_SHARED, "axnet_cs", dev);
533 info->link_status = 0x00;
534 init_timer(&info->watchdog);
535 info->watchdog.function = &ei_watchdog;
536 info->watchdog.data = (u_long)dev;
537 info->watchdog.expires = jiffies + HZ;
538 add_timer(&info->watchdog);
543 /*====================================================================*/
545 static int axnet_close(struct net_device *dev)
547 axnet_dev_t *info = PRIV(dev);
548 struct pcmcia_device *link = info->p_dev;
550 DEBUG(2, "axnet_close('%s')\n", dev->name);
553 free_irq(dev->irq, dev);
556 netif_stop_queue(dev);
557 del_timer_sync(&info->watchdog);
562 /*======================================================================
564 Hard reset the card. This used to pause for the same period that
565 a 8390 reset command required, but that shouldn't be necessary.
567 ======================================================================*/
569 static void axnet_reset_8390(struct net_device *dev)
571 unsigned int nic_base = dev->base_addr;
574 ei_status.txing = ei_status.dmaing = 0;
576 outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, nic_base + E8390_CMD);
578 outb(inb(nic_base + AXNET_RESET), nic_base + AXNET_RESET);
580 for (i = 0; i < 100; i++) {
581 if ((inb_p(nic_base+EN0_ISR) & ENISR_RESET) != 0)
585 outb_p(ENISR_RESET, nic_base + EN0_ISR); /* Ack intr. */
588 printk(KERN_ERR "%s: axnet_reset_8390() did not complete.\n",
591 } /* axnet_reset_8390 */
593 /*====================================================================*/
595 static irqreturn_t ei_irq_wrapper(int irq, void *dev_id)
597 struct net_device *dev = dev_id;
598 PRIV(dev)->stale = 0;
599 return ax_interrupt(irq, dev_id);
602 static void ei_watchdog(u_long arg)
604 struct net_device *dev = (struct net_device *)(arg);
605 axnet_dev_t *info = PRIV(dev);
606 unsigned int nic_base = dev->base_addr;
607 unsigned int mii_addr = nic_base + AXNET_MII_EEP;
610 if (!netif_device_present(dev)) goto reschedule;
612 /* Check for pending interrupt with expired latency timer: with
613 this, we can limp along even if the interrupt is blocked */
614 if (info->stale++ && (inb_p(nic_base + EN0_ISR) & ENISR_ALL)) {
615 if (!info->fast_poll)
616 printk(KERN_INFO "%s: interrupt(s) dropped!\n", dev->name);
617 ei_irq_wrapper(dev->irq, dev);
618 info->fast_poll = HZ;
620 if (info->fast_poll) {
622 info->watchdog.expires = jiffies + 1;
623 add_timer(&info->watchdog);
627 if (info->phy_id < 0)
629 link = mdio_read(mii_addr, info->phy_id, 1);
630 if (!link || (link == 0xffff)) {
631 printk(KERN_INFO "%s: MII is missing!\n", dev->name);
637 if (link != info->link_status) {
638 u_short p = mdio_read(mii_addr, info->phy_id, 5);
639 printk(KERN_INFO "%s: %s link beat\n", dev->name,
640 (link) ? "found" : "lost");
642 info->duplex_flag = (p & 0x0140) ? 0x80 : 0x00;
644 printk(KERN_INFO "%s: autonegotiation complete: "
645 "%sbaseT-%cD selected\n", dev->name,
646 ((p & 0x0180) ? "100" : "10"),
647 ((p & 0x0140) ? 'F' : 'H'));
649 printk(KERN_INFO "%s: link partner did not autonegotiate\n",
651 AX88190_init(dev, 1);
653 info->link_status = link;
657 info->watchdog.expires = jiffies + HZ;
658 add_timer(&info->watchdog);
661 static void netdev_get_drvinfo(struct net_device *dev,
662 struct ethtool_drvinfo *info)
664 strcpy(info->driver, "axnet_cs");
667 static const struct ethtool_ops netdev_ethtool_ops = {
668 .get_drvinfo = netdev_get_drvinfo,
671 /*====================================================================*/
673 static int axnet_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
675 axnet_dev_t *info = PRIV(dev);
676 u16 *data = (u16 *)&rq->ifr_ifru;
677 unsigned int mii_addr = dev->base_addr + AXNET_MII_EEP;
680 data[0] = info->phy_id;
681 case SIOCGMIIREG: /* Read MII PHY register. */
682 data[3] = mdio_read(mii_addr, data[0], data[1] & 0x1f);
684 case SIOCSMIIREG: /* Write MII PHY register. */
685 if (!capable(CAP_NET_ADMIN))
687 mdio_write(mii_addr, data[0], data[1] & 0x1f, data[2]);
693 /*====================================================================*/
695 static void get_8390_hdr(struct net_device *dev,
696 struct e8390_pkt_hdr *hdr,
699 unsigned int nic_base = dev->base_addr;
701 outb_p(0, nic_base + EN0_RSARLO); /* On page boundary */
702 outb_p(ring_page, nic_base + EN0_RSARHI);
703 outb_p(E8390_RREAD+E8390_START, nic_base + AXNET_CMD);
705 insw(nic_base + AXNET_DATAPORT, hdr,
706 sizeof(struct e8390_pkt_hdr)>>1);
707 /* Fix for big endian systems */
708 hdr->count = le16_to_cpu(hdr->count);
712 /*====================================================================*/
714 static void block_input(struct net_device *dev, int count,
715 struct sk_buff *skb, int ring_offset)
717 unsigned int nic_base = dev->base_addr;
718 int xfer_count = count;
719 char *buf = skb->data;
722 if ((ei_debug > 4) && (count != 4))
723 printk(KERN_DEBUG "%s: [bi=%d]\n", dev->name, count+4);
725 outb_p(ring_offset & 0xff, nic_base + EN0_RSARLO);
726 outb_p(ring_offset >> 8, nic_base + EN0_RSARHI);
727 outb_p(E8390_RREAD+E8390_START, nic_base + AXNET_CMD);
729 insw(nic_base + AXNET_DATAPORT,buf,count>>1);
731 buf[count-1] = inb(nic_base + AXNET_DATAPORT), xfer_count++;
735 /*====================================================================*/
737 static void block_output(struct net_device *dev, int count,
738 const u_char *buf, const int start_page)
740 unsigned int nic_base = dev->base_addr;
744 printk(KERN_DEBUG "%s: [bo=%d]\n", dev->name, count);
747 /* Round the count up for word writes. Do we need to do this?
748 What effect will an odd byte count have on the 8390?
749 I should check someday. */
753 outb_p(0x00, nic_base + EN0_RSARLO);
754 outb_p(start_page, nic_base + EN0_RSARHI);
755 outb_p(E8390_RWRITE+E8390_START, nic_base + AXNET_CMD);
756 outsw(nic_base + AXNET_DATAPORT, buf, count>>1);
759 static struct pcmcia_device_id axnet_ids[] = {
760 PCMCIA_PFC_DEVICE_MANF_CARD(0, 0x016c, 0x0081),
761 PCMCIA_DEVICE_MANF_CARD(0x018a, 0x0301),
762 PCMCIA_DEVICE_MANF_CARD(0x026f, 0x0301),
763 PCMCIA_DEVICE_MANF_CARD(0x026f, 0x0303),
764 PCMCIA_DEVICE_MANF_CARD(0x026f, 0x0309),
765 PCMCIA_DEVICE_MANF_CARD(0x0274, 0x1106),
766 PCMCIA_DEVICE_MANF_CARD(0x8a01, 0xc1ab),
767 PCMCIA_DEVICE_MANF_CARD(0x021b, 0x0202),
768 PCMCIA_DEVICE_MANF_CARD(0xffff, 0x1090),
769 PCMCIA_DEVICE_PROD_ID12("AmbiCom,Inc.", "Fast Ethernet PC Card(AMB8110)", 0x49b020a7, 0x119cc9fc),
770 PCMCIA_DEVICE_PROD_ID124("Fast Ethernet", "16-bit PC Card", "AX88190", 0xb4be14e3, 0x9a12eb6a, 0xab9be5ef),
771 PCMCIA_DEVICE_PROD_ID12("ASIX", "AX88190", 0x0959823b, 0xab9be5ef),
772 PCMCIA_DEVICE_PROD_ID12("Billionton", "LNA-100B", 0x552ab682, 0xbc3b87e1),
773 PCMCIA_DEVICE_PROD_ID12("CHEETAH ETHERCARD", "EN2228", 0x00fa7bc8, 0x00e990cc),
774 PCMCIA_DEVICE_PROD_ID12("CNet", "CNF301", 0xbc477dde, 0x78c5f40b),
775 PCMCIA_DEVICE_PROD_ID12("corega K.K.", "corega FEther PCC-TXD", 0x5261440f, 0x436768c5),
776 PCMCIA_DEVICE_PROD_ID12("corega K.K.", "corega FEtherII PCC-TXD", 0x5261440f, 0x730df72e),
777 PCMCIA_DEVICE_PROD_ID12("Dynalink", "L100C16", 0x55632fd5, 0x66bc2a90),
778 PCMCIA_DEVICE_PROD_ID12("Linksys", "EtherFast 10/100 PC Card (PCMPC100 V3)", 0x0733cc81, 0x232019a8),
779 PCMCIA_DEVICE_PROD_ID12("MELCO", "LPC3-TX", 0x481e0094, 0xf91af609),
780 PCMCIA_DEVICE_PROD_ID12("PCMCIA", "100BASE", 0x281f1c5d, 0x7c2add04),
781 PCMCIA_DEVICE_PROD_ID12("PCMCIA", "FastEtherCard", 0x281f1c5d, 0x7ef26116),
782 PCMCIA_DEVICE_PROD_ID12("PCMCIA", "FEP501", 0x281f1c5d, 0x2e272058),
783 PCMCIA_DEVICE_PROD_ID14("Network Everywhere", "AX88190", 0x820a67b6, 0xab9be5ef),
786 MODULE_DEVICE_TABLE(pcmcia, axnet_ids);
788 static struct pcmcia_driver axnet_cs_driver = {
789 .owner = THIS_MODULE,
793 .probe = axnet_probe,
794 .remove = axnet_detach,
795 .id_table = axnet_ids,
796 .suspend = axnet_suspend,
797 .resume = axnet_resume,
800 static int __init init_axnet_cs(void)
802 return pcmcia_register_driver(&axnet_cs_driver);
805 static void __exit exit_axnet_cs(void)
807 pcmcia_unregister_driver(&axnet_cs_driver);
810 module_init(init_axnet_cs);
811 module_exit(exit_axnet_cs);
813 /*====================================================================*/
815 /* 8390.c: A general NS8390 ethernet driver core for linux. */
817 Written 1992-94 by Donald Becker.
819 Copyright 1993 United States Government as represented by the
820 Director, National Security Agency.
822 This software may be used and distributed according to the terms
823 of the GNU General Public License, incorporated herein by reference.
825 The author may be reached as becker@scyld.com, or C/O
826 Scyld Computing Corporation
827 410 Severn Ave., Suite 210
830 This is the chip-specific code for many 8390-based ethernet adaptors.
831 This is not a complete driver, it must be combined with board-specific
832 code such as ne.c, wd.c, 3c503.c, etc.
834 Seeing how at least eight drivers use this code, (not counting the
835 PCMCIA ones either) it is easy to break some card by what seems like
836 a simple innocent change. Please contact me or Donald if you think
837 you have found something that needs changing. -- PG
841 Paul Gortmaker : remove set_bit lock, other cleanups.
842 Paul Gortmaker : add ei_get_8390_hdr() so we can pass skb's to
843 ei_block_input() for eth_io_copy_and_sum().
844 Paul Gortmaker : exchange static int ei_pingpong for a #define,
845 also add better Tx error handling.
846 Paul Gortmaker : rewrite Rx overrun handling as per NS specs.
847 Alexey Kuznetsov : use the 8390's six bit hash multicast filter.
848 Paul Gortmaker : tweak ANK's above multicast changes a bit.
849 Paul Gortmaker : update packet statistics for v2.1.x
850 Alan Cox : support arbitary stupid port mappings on the
851 68K Macintosh. Support >16bit I/O spaces
852 Paul Gortmaker : add kmod support for auto-loading of the 8390
853 module by all drivers that require it.
854 Alan Cox : Spinlocking work, added 'BUG_83C690'
855 Paul Gortmaker : Separate out Tx timeout code from Tx path.
858 The National Semiconductor LAN Databook, and the 3Com 3c503 databook.
862 static const char *version_8390 =
863 "8390.c:v1.10cvs 9/23/94 Donald Becker (becker@scyld.com)\n";
865 #include <linux/bitops.h>
867 #include <linux/fcntl.h>
868 #include <linux/in.h>
869 #include <linux/interrupt.h>
871 #include <linux/etherdevice.h>
875 /* These are the operational function interfaces to board-specific
877 void reset_8390(struct net_device *dev)
878 Resets the board associated with DEV, including a hardware reset of
879 the 8390. This is only called when there is a transmit timeout, and
880 it is always followed by 8390_init().
881 void block_output(struct net_device *dev, int count, const unsigned char *buf,
883 Write the COUNT bytes of BUF to the packet buffer at START_PAGE. The
884 "page" value uses the 8390's 256-byte pages.
885 void get_8390_hdr(struct net_device *dev, struct e8390_hdr *hdr, int ring_page)
886 Read the 4 byte, page aligned 8390 header. *If* there is a
887 subsequent read, it will be of the rest of the packet.
888 void block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset)
889 Read COUNT bytes from the packet buffer into the skb data area. Start
890 reading from RING_OFFSET, the address as the 8390 sees it. This will always
891 follow the read of the 8390 header.
893 #define ei_reset_8390 (ei_local->reset_8390)
894 #define ei_block_output (ei_local->block_output)
895 #define ei_block_input (ei_local->block_input)
896 #define ei_get_8390_hdr (ei_local->get_8390_hdr)
898 /* use 0 for production, 1 for verification, >2 for debug */
903 /* Index to functions. */
904 static void ei_tx_intr(struct net_device *dev);
905 static void ei_tx_err(struct net_device *dev);
906 static void ei_tx_timeout(struct net_device *dev);
907 static void ei_receive(struct net_device *dev);
908 static void ei_rx_overrun(struct net_device *dev);
910 /* Routines generic to NS8390-based boards. */
911 static void NS8390_trigger_send(struct net_device *dev, unsigned int length,
913 static void set_multicast_list(struct net_device *dev);
914 static void do_set_multicast_list(struct net_device *dev);
917 * SMP and the 8390 setup.
919 * The 8390 isnt exactly designed to be multithreaded on RX/TX. There is
920 * a page register that controls bank and packet buffer access. We guard
921 * this with ei_local->page_lock. Nobody should assume or set the page other
922 * than zero when the lock is not held. Lock holders must restore page 0
923 * before unlocking. Even pure readers must take the lock to protect in
926 * To make life difficult the chip can also be very slow. We therefore can't
927 * just use spinlocks. For the longer lockups we disable the irq the device
928 * sits on and hold the lock. We must hold the lock because there is a dual
929 * processor case other than interrupts (get stats/set multicast list in
930 * parallel with each other and transmit).
932 * Note: in theory we can just disable the irq on the card _but_ there is
933 * a latency on SMP irq delivery. So we can easily go "disable irq" "sync irqs"
934 * enter lock, take the queued irq. So we waddle instead of flying.
936 * Finally by special arrangement for the purpose of being generally
937 * annoying the transmit function is called bh atomic. That places
938 * restrictions on the user context callers as disable_irq won't save
943 * ax_open - Open/initialize the board.
944 * @dev: network device to initialize
946 * This routine goes all-out, setting everything
947 * up anew at each open, even though many of these registers should only
948 * need to be set once at boot.
950 static int ax_open(struct net_device *dev)
953 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
955 #ifdef HAVE_TX_TIMEOUT
956 /* The card I/O part of the driver (e.g. 3c503) can hook a Tx timeout
957 wrapper that does e.g. media check & then calls ei_tx_timeout. */
958 if (dev->tx_timeout == NULL)
959 dev->tx_timeout = ei_tx_timeout;
960 if (dev->watchdog_timeo <= 0)
961 dev->watchdog_timeo = TX_TIMEOUT;
965 * Grab the page lock so we own the register set, then call
969 spin_lock_irqsave(&ei_local->page_lock, flags);
970 AX88190_init(dev, 1);
971 /* Set the flag before we drop the lock, That way the IRQ arrives
972 after its set and we get no silly warnings */
973 netif_start_queue(dev);
974 spin_unlock_irqrestore(&ei_local->page_lock, flags);
975 ei_local->irqlock = 0;
979 #define dev_lock(dev) (((struct ei_device *)netdev_priv(dev))->page_lock)
982 * ax_close - shut down network device
983 * @dev: network device to close
985 * Opposite of ax_open(). Only used when "ifconfig <devname> down" is done.
987 static int ax_close(struct net_device *dev)
992 * Hold the page lock during close
995 spin_lock_irqsave(&dev_lock(dev), flags);
996 AX88190_init(dev, 0);
997 spin_unlock_irqrestore(&dev_lock(dev), flags);
998 netif_stop_queue(dev);
1003 * ei_tx_timeout - handle transmit time out condition
1004 * @dev: network device which has apparently fallen asleep
1006 * Called by kernel when device never acknowledges a transmit has
1007 * completed (or failed) - i.e. never posted a Tx related interrupt.
1010 static void ei_tx_timeout(struct net_device *dev)
1012 long e8390_base = dev->base_addr;
1013 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1014 int txsr, isr, tickssofar = jiffies - dev->trans_start;
1015 unsigned long flags;
1017 dev->stats.tx_errors++;
1019 spin_lock_irqsave(&ei_local->page_lock, flags);
1020 txsr = inb(e8390_base+EN0_TSR);
1021 isr = inb(e8390_base+EN0_ISR);
1022 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1024 printk(KERN_DEBUG "%s: Tx timed out, %s TSR=%#2x, ISR=%#2x, t=%d.\n",
1025 dev->name, (txsr & ENTSR_ABT) ? "excess collisions." :
1026 (isr) ? "lost interrupt?" : "cable problem?", txsr, isr, tickssofar);
1028 if (!isr && !dev->stats.tx_packets)
1030 /* The 8390 probably hasn't gotten on the cable yet. */
1031 ei_local->interface_num ^= 1; /* Try a different xcvr. */
1034 /* Ugly but a reset can be slow, yet must be protected */
1036 spin_lock_irqsave(&ei_local->page_lock, flags);
1038 /* Try to restart the card. Perhaps the user has fixed something. */
1040 AX88190_init(dev, 1);
1042 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1043 netif_wake_queue(dev);
1047 * ei_start_xmit - begin packet transmission
1048 * @skb: packet to be sent
1049 * @dev: network device to which packet is sent
1051 * Sends a packet to an 8390 network device.
1054 static int ei_start_xmit(struct sk_buff *skb, struct net_device *dev)
1056 long e8390_base = dev->base_addr;
1057 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1058 int length, send_length, output_page;
1059 unsigned long flags;
1060 u8 packet[ETH_ZLEN];
1062 netif_stop_queue(dev);
1066 /* Mask interrupts from the ethercard.
1067 SMP: We have to grab the lock here otherwise the IRQ handler
1068 on another CPU can flip window and race the IRQ mask set. We end
1069 up trashing the mcast filter not disabling irqs if we don't lock */
1071 spin_lock_irqsave(&ei_local->page_lock, flags);
1072 outb_p(0x00, e8390_base + EN0_IMR);
1073 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1076 * Slow phase with lock held.
1079 spin_lock_irqsave(&ei_local->page_lock, flags);
1081 ei_local->irqlock = 1;
1083 send_length = max(length, ETH_ZLEN);
1086 * We have two Tx slots available for use. Find the first free
1087 * slot, and then perform some sanity checks. With two Tx bufs,
1088 * you get very close to transmitting back-to-back packets. With
1089 * only one Tx buf, the transmitter sits idle while you reload the
1090 * card, leaving a substantial gap between each transmitted packet.
1093 if (ei_local->tx1 == 0)
1095 output_page = ei_local->tx_start_page;
1096 ei_local->tx1 = send_length;
1097 if (ei_debug && ei_local->tx2 > 0)
1098 printk(KERN_DEBUG "%s: idle transmitter tx2=%d, lasttx=%d, txing=%d.\n",
1099 dev->name, ei_local->tx2, ei_local->lasttx, ei_local->txing);
1101 else if (ei_local->tx2 == 0)
1103 output_page = ei_local->tx_start_page + TX_PAGES/2;
1104 ei_local->tx2 = send_length;
1105 if (ei_debug && ei_local->tx1 > 0)
1106 printk(KERN_DEBUG "%s: idle transmitter, tx1=%d, lasttx=%d, txing=%d.\n",
1107 dev->name, ei_local->tx1, ei_local->lasttx, ei_local->txing);
1110 { /* We should never get here. */
1112 printk(KERN_DEBUG "%s: No Tx buffers free! tx1=%d tx2=%d last=%d\n",
1113 dev->name, ei_local->tx1, ei_local->tx2, ei_local->lasttx);
1114 ei_local->irqlock = 0;
1115 netif_stop_queue(dev);
1116 outb_p(ENISR_ALL, e8390_base + EN0_IMR);
1117 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1118 dev->stats.tx_errors++;
1123 * Okay, now upload the packet and trigger a send if the transmitter
1124 * isn't already sending. If it is busy, the interrupt handler will
1125 * trigger the send later, upon receiving a Tx done interrupt.
1128 if (length == skb->len)
1129 ei_block_output(dev, length, skb->data, output_page);
1131 memset(packet, 0, ETH_ZLEN);
1132 skb_copy_from_linear_data(skb, packet, skb->len);
1133 ei_block_output(dev, length, packet, output_page);
1136 if (! ei_local->txing)
1138 ei_local->txing = 1;
1139 NS8390_trigger_send(dev, send_length, output_page);
1140 dev->trans_start = jiffies;
1141 if (output_page == ei_local->tx_start_page)
1144 ei_local->lasttx = -1;
1149 ei_local->lasttx = -2;
1152 else ei_local->txqueue++;
1154 if (ei_local->tx1 && ei_local->tx2)
1155 netif_stop_queue(dev);
1157 netif_start_queue(dev);
1159 /* Turn 8390 interrupts back on. */
1160 ei_local->irqlock = 0;
1161 outb_p(ENISR_ALL, e8390_base + EN0_IMR);
1163 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1165 dev_kfree_skb (skb);
1166 dev->stats.tx_bytes += send_length;
1172 * ax_interrupt - handle the interrupts from an 8390
1173 * @irq: interrupt number
1174 * @dev_id: a pointer to the net_device
1177 * Handle the ether interface interrupts. We pull packets from
1178 * the 8390 via the card specific functions and fire them at the networking
1179 * stack. We also handle transmit completions and wake the transmit path if
1180 * necessary. We also update the counters and do other housekeeping as
1184 static irqreturn_t ax_interrupt(int irq, void *dev_id)
1186 struct net_device *dev = dev_id;
1188 int interrupts, nr_serviced = 0, i;
1189 struct ei_device *ei_local;
1192 e8390_base = dev->base_addr;
1193 ei_local = netdev_priv(dev);
1196 * Protect the irq test too.
1199 spin_lock(&ei_local->page_lock);
1201 if (ei_local->irqlock)
1203 #if 1 /* This might just be an interrupt for a PCI device sharing this line */
1204 /* The "irqlock" check is only for testing. */
1205 printk(ei_local->irqlock
1206 ? "%s: Interrupted while interrupts are masked! isr=%#2x imr=%#2x.\n"
1207 : "%s: Reentering the interrupt handler! isr=%#2x imr=%#2x.\n",
1208 dev->name, inb_p(e8390_base + EN0_ISR),
1209 inb_p(e8390_base + EN0_IMR));
1211 spin_unlock(&ei_local->page_lock);
1216 printk(KERN_DEBUG "%s: interrupt(isr=%#2.2x).\n", dev->name,
1217 inb_p(e8390_base + EN0_ISR));
1219 outb_p(0x00, e8390_base + EN0_ISR);
1220 ei_local->irqlock = 1;
1222 /* !!Assumption!! -- we stay in page 0. Don't break this. */
1223 while ((interrupts = inb_p(e8390_base + EN0_ISR)) != 0
1224 && ++nr_serviced < MAX_SERVICE)
1226 if (!netif_running(dev) || (interrupts == 0xff)) {
1228 printk(KERN_WARNING "%s: interrupt from stopped card\n", dev->name);
1229 outb_p(interrupts, e8390_base + EN0_ISR);
1235 /* AX88190 bug fix. */
1236 outb_p(interrupts, e8390_base + EN0_ISR);
1237 for (i = 0; i < 10; i++) {
1238 if (!(inb(e8390_base + EN0_ISR) & interrupts))
1240 outb_p(0, e8390_base + EN0_ISR);
1241 outb_p(interrupts, e8390_base + EN0_ISR);
1243 if (interrupts & ENISR_OVER)
1245 else if (interrupts & (ENISR_RX+ENISR_RX_ERR))
1247 /* Got a good (?) packet. */
1250 /* Push the next to-transmit packet through. */
1251 if (interrupts & ENISR_TX)
1253 else if (interrupts & ENISR_TX_ERR)
1256 if (interrupts & ENISR_COUNTERS)
1258 dev->stats.rx_frame_errors += inb_p(e8390_base + EN0_COUNTER0);
1259 dev->stats.rx_crc_errors += inb_p(e8390_base + EN0_COUNTER1);
1260 dev->stats.rx_missed_errors+= inb_p(e8390_base + EN0_COUNTER2);
1264 if (interrupts && ei_debug > 3)
1267 if (nr_serviced >= MAX_SERVICE)
1269 /* 0xFF is valid for a card removal */
1270 if(interrupts!=0xFF)
1271 printk(KERN_WARNING "%s: Too much work at interrupt, status %#2.2x\n",
1272 dev->name, interrupts);
1273 outb_p(ENISR_ALL, e8390_base + EN0_ISR); /* Ack. most intrs. */
1275 printk(KERN_WARNING "%s: unknown interrupt %#2x\n", dev->name, interrupts);
1276 outb_p(0xff, e8390_base + EN0_ISR); /* Ack. all intrs. */
1280 /* Turn 8390 interrupts back on. */
1281 ei_local->irqlock = 0;
1282 outb_p(ENISR_ALL, e8390_base + EN0_IMR);
1284 spin_unlock(&ei_local->page_lock);
1285 return IRQ_RETVAL(handled);
1289 * ei_tx_err - handle transmitter error
1290 * @dev: network device which threw the exception
1292 * A transmitter error has happened. Most likely excess collisions (which
1293 * is a fairly normal condition). If the error is one where the Tx will
1294 * have been aborted, we try and send another one right away, instead of
1295 * letting the failed packet sit and collect dust in the Tx buffer. This
1296 * is a much better solution as it avoids kernel based Tx timeouts, and
1297 * an unnecessary card reset.
1299 * Called with lock held.
1302 static void ei_tx_err(struct net_device *dev)
1304 long e8390_base = dev->base_addr;
1305 unsigned char txsr = inb_p(e8390_base+EN0_TSR);
1306 unsigned char tx_was_aborted = txsr & (ENTSR_ABT+ENTSR_FU);
1308 #ifdef VERBOSE_ERROR_DUMP
1309 printk(KERN_DEBUG "%s: transmitter error (%#2x): ", dev->name, txsr);
1310 if (txsr & ENTSR_ABT)
1311 printk("excess-collisions ");
1312 if (txsr & ENTSR_ND)
1313 printk("non-deferral ");
1314 if (txsr & ENTSR_CRS)
1315 printk("lost-carrier ");
1316 if (txsr & ENTSR_FU)
1317 printk("FIFO-underrun ");
1318 if (txsr & ENTSR_CDH)
1319 printk("lost-heartbeat ");
1327 dev->stats.tx_errors++;
1328 if (txsr & ENTSR_CRS) dev->stats.tx_carrier_errors++;
1329 if (txsr & ENTSR_CDH) dev->stats.tx_heartbeat_errors++;
1330 if (txsr & ENTSR_OWC) dev->stats.tx_window_errors++;
1335 * ei_tx_intr - transmit interrupt handler
1336 * @dev: network device for which tx intr is handled
1338 * We have finished a transmit: check for errors and then trigger the next
1339 * packet to be sent. Called with lock held.
1342 static void ei_tx_intr(struct net_device *dev)
1344 long e8390_base = dev->base_addr;
1345 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1346 int status = inb(e8390_base + EN0_TSR);
1349 * There are two Tx buffers, see which one finished, and trigger
1350 * the send of another one if it exists.
1352 ei_local->txqueue--;
1354 if (ei_local->tx1 < 0)
1356 if (ei_local->lasttx != 1 && ei_local->lasttx != -1)
1357 printk(KERN_ERR "%s: bogus last_tx_buffer %d, tx1=%d.\n",
1358 ei_local->name, ei_local->lasttx, ei_local->tx1);
1360 if (ei_local->tx2 > 0)
1362 ei_local->txing = 1;
1363 NS8390_trigger_send(dev, ei_local->tx2, ei_local->tx_start_page + 6);
1364 dev->trans_start = jiffies;
1366 ei_local->lasttx = 2;
1368 else ei_local->lasttx = 20, ei_local->txing = 0;
1370 else if (ei_local->tx2 < 0)
1372 if (ei_local->lasttx != 2 && ei_local->lasttx != -2)
1373 printk("%s: bogus last_tx_buffer %d, tx2=%d.\n",
1374 ei_local->name, ei_local->lasttx, ei_local->tx2);
1376 if (ei_local->tx1 > 0)
1378 ei_local->txing = 1;
1379 NS8390_trigger_send(dev, ei_local->tx1, ei_local->tx_start_page);
1380 dev->trans_start = jiffies;
1382 ei_local->lasttx = 1;
1385 ei_local->lasttx = 10, ei_local->txing = 0;
1387 // else printk(KERN_WARNING "%s: unexpected TX-done interrupt, lasttx=%d.\n",
1388 // dev->name, ei_local->lasttx);
1390 /* Minimize Tx latency: update the statistics after we restart TXing. */
1391 if (status & ENTSR_COL)
1392 dev->stats.collisions++;
1393 if (status & ENTSR_PTX)
1394 dev->stats.tx_packets++;
1397 dev->stats.tx_errors++;
1398 if (status & ENTSR_ABT)
1400 dev->stats.tx_aborted_errors++;
1401 dev->stats.collisions += 16;
1403 if (status & ENTSR_CRS)
1404 dev->stats.tx_carrier_errors++;
1405 if (status & ENTSR_FU)
1406 dev->stats.tx_fifo_errors++;
1407 if (status & ENTSR_CDH)
1408 dev->stats.tx_heartbeat_errors++;
1409 if (status & ENTSR_OWC)
1410 dev->stats.tx_window_errors++;
1412 netif_wake_queue(dev);
1416 * ei_receive - receive some packets
1417 * @dev: network device with which receive will be run
1419 * We have a good packet(s), get it/them out of the buffers.
1420 * Called with lock held.
1423 static void ei_receive(struct net_device *dev)
1425 long e8390_base = dev->base_addr;
1426 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1427 unsigned char rxing_page, this_frame, next_frame;
1428 unsigned short current_offset;
1429 int rx_pkt_count = 0;
1430 struct e8390_pkt_hdr rx_frame;
1432 while (++rx_pkt_count < 10)
1434 int pkt_len, pkt_stat;
1436 /* Get the rx page (incoming packet pointer). */
1437 rxing_page = inb_p(e8390_base + EN1_CURPAG -1);
1439 /* Remove one frame from the ring. Boundary is always a page behind. */
1440 this_frame = inb_p(e8390_base + EN0_BOUNDARY) + 1;
1441 if (this_frame >= ei_local->stop_page)
1442 this_frame = ei_local->rx_start_page;
1444 /* Someday we'll omit the previous, iff we never get this message.
1445 (There is at least one clone claimed to have a problem.)
1447 Keep quiet if it looks like a card removal. One problem here
1448 is that some clones crash in roughly the same way.
1450 if (ei_debug > 0 && this_frame != ei_local->current_page && (this_frame!=0x0 || rxing_page!=0xFF))
1451 printk(KERN_ERR "%s: mismatched read page pointers %2x vs %2x.\n",
1452 dev->name, this_frame, ei_local->current_page);
1454 if (this_frame == rxing_page) /* Read all the frames? */
1455 break; /* Done for now */
1457 current_offset = this_frame << 8;
1458 ei_get_8390_hdr(dev, &rx_frame, this_frame);
1460 pkt_len = rx_frame.count - sizeof(struct e8390_pkt_hdr);
1461 pkt_stat = rx_frame.status;
1463 next_frame = this_frame + 1 + ((pkt_len+4)>>8);
1465 if (pkt_len < 60 || pkt_len > 1518)
1468 printk(KERN_DEBUG "%s: bogus packet size: %d, status=%#2x nxpg=%#2x.\n",
1469 dev->name, rx_frame.count, rx_frame.status,
1471 dev->stats.rx_errors++;
1472 dev->stats.rx_length_errors++;
1474 else if ((pkt_stat & 0x0F) == ENRSR_RXOK)
1476 struct sk_buff *skb;
1478 skb = dev_alloc_skb(pkt_len+2);
1482 printk(KERN_DEBUG "%s: Couldn't allocate a sk_buff of size %d.\n",
1483 dev->name, pkt_len);
1484 dev->stats.rx_dropped++;
1489 skb_reserve(skb,2); /* IP headers on 16 byte boundaries */
1490 skb_put(skb, pkt_len); /* Make room */
1491 ei_block_input(dev, pkt_len, skb, current_offset + sizeof(rx_frame));
1492 skb->protocol=eth_type_trans(skb,dev);
1494 dev->last_rx = jiffies;
1495 dev->stats.rx_packets++;
1496 dev->stats.rx_bytes += pkt_len;
1497 if (pkt_stat & ENRSR_PHY)
1498 dev->stats.multicast++;
1504 printk(KERN_DEBUG "%s: bogus packet: status=%#2x nxpg=%#2x size=%d\n",
1505 dev->name, rx_frame.status, rx_frame.next,
1507 dev->stats.rx_errors++;
1508 /* NB: The NIC counts CRC, frame and missed errors. */
1509 if (pkt_stat & ENRSR_FO)
1510 dev->stats.rx_fifo_errors++;
1512 next_frame = rx_frame.next;
1514 /* This _should_ never happen: it's here for avoiding bad clones. */
1515 if (next_frame >= ei_local->stop_page) {
1516 printk("%s: next frame inconsistency, %#2x\n", dev->name,
1518 next_frame = ei_local->rx_start_page;
1520 ei_local->current_page = next_frame;
1521 outb_p(next_frame-1, e8390_base+EN0_BOUNDARY);
1528 * ei_rx_overrun - handle receiver overrun
1529 * @dev: network device which threw exception
1531 * We have a receiver overrun: we have to kick the 8390 to get it started
1532 * again. Problem is that you have to kick it exactly as NS prescribes in
1533 * the updated datasheets, or "the NIC may act in an unpredictable manner."
1534 * This includes causing "the NIC to defer indefinitely when it is stopped
1535 * on a busy network." Ugh.
1536 * Called with lock held. Don't call this with the interrupts off or your
1537 * computer will hate you - it takes 10ms or so.
1540 static void ei_rx_overrun(struct net_device *dev)
1542 axnet_dev_t *info = PRIV(dev);
1543 long e8390_base = dev->base_addr;
1544 unsigned char was_txing, must_resend = 0;
1547 * Record whether a Tx was in progress and then issue the
1550 was_txing = inb_p(e8390_base+E8390_CMD) & E8390_TRANS;
1551 outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD);
1554 printk(KERN_DEBUG "%s: Receiver overrun.\n", dev->name);
1555 dev->stats.rx_over_errors++;
1558 * Wait a full Tx time (1.2ms) + some guard time, NS says 1.6ms total.
1559 * Early datasheets said to poll the reset bit, but now they say that
1560 * it "is not a reliable indicator and subsequently should be ignored."
1561 * We wait at least 10ms.
1567 * Reset RBCR[01] back to zero as per magic incantation.
1569 outb_p(0x00, e8390_base+EN0_RCNTLO);
1570 outb_p(0x00, e8390_base+EN0_RCNTHI);
1573 * See if any Tx was interrupted or not. According to NS, this
1574 * step is vital, and skipping it will cause no end of havoc.
1579 unsigned char tx_completed = inb_p(e8390_base+EN0_ISR) & (ENISR_TX+ENISR_TX_ERR);
1585 * Have to enter loopback mode and then restart the NIC before
1586 * you are allowed to slurp packets up off the ring.
1588 outb_p(E8390_TXOFF, e8390_base + EN0_TXCR);
1589 outb_p(E8390_NODMA + E8390_PAGE0 + E8390_START, e8390_base + E8390_CMD);
1592 * Clear the Rx ring of all the debris, and ack the interrupt.
1597 * Leave loopback mode, and resend any packet that got stopped.
1599 outb_p(E8390_TXCONFIG | info->duplex_flag, e8390_base + EN0_TXCR);
1601 outb_p(E8390_NODMA + E8390_PAGE0 + E8390_START + E8390_TRANS, e8390_base + E8390_CMD);
1605 * Collect the stats. This is called unlocked and from several contexts.
1608 static struct net_device_stats *get_stats(struct net_device *dev)
1610 long ioaddr = dev->base_addr;
1611 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1612 unsigned long flags;
1614 /* If the card is stopped, just return the present stats. */
1615 if (!netif_running(dev))
1618 spin_lock_irqsave(&ei_local->page_lock,flags);
1619 /* Read the counter registers, assuming we are in page 0. */
1620 dev->stats.rx_frame_errors += inb_p(ioaddr + EN0_COUNTER0);
1621 dev->stats.rx_crc_errors += inb_p(ioaddr + EN0_COUNTER1);
1622 dev->stats.rx_missed_errors+= inb_p(ioaddr + EN0_COUNTER2);
1623 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1629 * Form the 64 bit 8390 multicast table from the linked list of addresses
1630 * associated with this dev structure.
1633 static inline void make_mc_bits(u8 *bits, struct net_device *dev)
1635 struct dev_mc_list *dmi;
1638 for (dmi=dev->mc_list; dmi; dmi=dmi->next) {
1640 crc = ether_crc(ETH_ALEN, dmi->dmi_addr);
1642 * The 8390 uses the 6 most significant bits of the
1643 * CRC to index the multicast table.
1645 bits[crc>>29] |= (1<<((crc>>26)&7));
1650 * do_set_multicast_list - set/clear multicast filter
1651 * @dev: net device for which multicast filter is adjusted
1653 * Set or clear the multicast filter for this adaptor.
1654 * Must be called with lock held.
1657 static void do_set_multicast_list(struct net_device *dev)
1659 long e8390_base = dev->base_addr;
1661 struct ei_device *ei_local = (struct ei_device*)netdev_priv(dev);
1663 if (!(dev->flags&(IFF_PROMISC|IFF_ALLMULTI))) {
1664 memset(ei_local->mcfilter, 0, 8);
1666 make_mc_bits(ei_local->mcfilter, dev);
1668 /* set to accept-all */
1669 memset(ei_local->mcfilter, 0xFF, 8);
1672 outb_p(E8390_NODMA + E8390_PAGE1, e8390_base + E8390_CMD);
1673 for(i = 0; i < 8; i++)
1675 outb_p(ei_local->mcfilter[i], e8390_base + EN1_MULT_SHIFT(i));
1677 outb_p(E8390_NODMA + E8390_PAGE0, e8390_base + E8390_CMD);
1679 if(dev->flags&IFF_PROMISC)
1680 outb_p(E8390_RXCONFIG | 0x58, e8390_base + EN0_RXCR);
1681 else if(dev->flags&IFF_ALLMULTI || dev->mc_list)
1682 outb_p(E8390_RXCONFIG | 0x48, e8390_base + EN0_RXCR);
1684 outb_p(E8390_RXCONFIG | 0x40, e8390_base + EN0_RXCR);
1686 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, e8390_base+E8390_CMD);
1690 * Called without lock held. This is invoked from user context and may
1691 * be parallel to just about everything else. Its also fairly quick and
1692 * not called too often. Must protect against both bh and irq users
1695 static void set_multicast_list(struct net_device *dev)
1697 unsigned long flags;
1699 spin_lock_irqsave(&dev_lock(dev), flags);
1700 do_set_multicast_list(dev);
1701 spin_unlock_irqrestore(&dev_lock(dev), flags);
1705 * axdev_setup - init rest of 8390 device struct
1706 * @dev: network device structure to init
1708 * Initialize the rest of the 8390 device structure. Do NOT __init
1709 * this, as it is used by 8390 based modular drivers too.
1712 static void axdev_setup(struct net_device *dev)
1714 struct ei_device *ei_local;
1716 printk(version_8390);
1718 ei_local = (struct ei_device *)netdev_priv(dev);
1719 spin_lock_init(&ei_local->page_lock);
1721 dev->hard_start_xmit = &ei_start_xmit;
1722 dev->get_stats = get_stats;
1723 dev->set_multicast_list = &set_multicast_list;
1728 /* This page of functions should be 8390 generic */
1729 /* Follow National Semi's recommendations for initializing the "NIC". */
1732 * AX88190_init - initialize 8390 hardware
1733 * @dev: network device to initialize
1734 * @startp: boolean. non-zero value to initiate chip processing
1736 * Must be called with lock held.
1739 static void AX88190_init(struct net_device *dev, int startp)
1741 axnet_dev_t *info = PRIV(dev);
1742 long e8390_base = dev->base_addr;
1743 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1745 int endcfg = ei_local->word16 ? (0x48 | ENDCFG_WTS) : 0x48;
1747 if(sizeof(struct e8390_pkt_hdr)!=4)
1748 panic("8390.c: header struct mispacked\n");
1749 /* Follow National Semi's recommendations for initing the DP83902. */
1750 outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD); /* 0x21 */
1751 outb_p(endcfg, e8390_base + EN0_DCFG); /* 0x48 or 0x49 */
1752 /* Clear the remote byte count registers. */
1753 outb_p(0x00, e8390_base + EN0_RCNTLO);
1754 outb_p(0x00, e8390_base + EN0_RCNTHI);
1755 /* Set to monitor and loopback mode -- this is vital!. */
1756 outb_p(E8390_RXOFF|0x40, e8390_base + EN0_RXCR); /* 0x60 */
1757 outb_p(E8390_TXOFF, e8390_base + EN0_TXCR); /* 0x02 */
1758 /* Set the transmit page and receive ring. */
1759 outb_p(ei_local->tx_start_page, e8390_base + EN0_TPSR);
1760 ei_local->tx1 = ei_local->tx2 = 0;
1761 outb_p(ei_local->rx_start_page, e8390_base + EN0_STARTPG);
1762 outb_p(ei_local->stop_page-1, e8390_base + EN0_BOUNDARY); /* 3c503 says 0x3f,NS0x26*/
1763 ei_local->current_page = ei_local->rx_start_page; /* assert boundary+1 */
1764 outb_p(ei_local->stop_page, e8390_base + EN0_STOPPG);
1765 /* Clear the pending interrupts and mask. */
1766 outb_p(0xFF, e8390_base + EN0_ISR);
1767 outb_p(0x00, e8390_base + EN0_IMR);
1769 /* Copy the station address into the DS8390 registers. */
1771 outb_p(E8390_NODMA + E8390_PAGE1 + E8390_STOP, e8390_base+E8390_CMD); /* 0x61 */
1772 for(i = 0; i < 6; i++)
1774 outb_p(dev->dev_addr[i], e8390_base + EN1_PHYS_SHIFT(i));
1775 if(inb_p(e8390_base + EN1_PHYS_SHIFT(i))!=dev->dev_addr[i])
1776 printk(KERN_ERR "Hw. address read/write mismap %d\n",i);
1779 outb_p(ei_local->rx_start_page, e8390_base + EN1_CURPAG);
1780 outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD);
1782 netif_start_queue(dev);
1783 ei_local->tx1 = ei_local->tx2 = 0;
1784 ei_local->txing = 0;
1788 outb_p(0xff, e8390_base + EN0_ISR);
1789 outb_p(ENISR_ALL, e8390_base + EN0_IMR);
1790 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, e8390_base+E8390_CMD);
1791 outb_p(E8390_TXCONFIG | info->duplex_flag,
1792 e8390_base + EN0_TXCR); /* xmit on. */
1793 /* 3c503 TechMan says rxconfig only after the NIC is started. */
1794 outb_p(E8390_RXCONFIG | 0x40, e8390_base + EN0_RXCR); /* rx on, */
1795 do_set_multicast_list(dev); /* (re)load the mcast table */
1799 /* Trigger a transmit start, assuming the length is valid.
1800 Always called with the page lock held */
1802 static void NS8390_trigger_send(struct net_device *dev, unsigned int length,
1805 long e8390_base = dev->base_addr;
1806 struct ei_device *ei_local __attribute((unused)) = (struct ei_device *) netdev_priv(dev);
1808 if (inb_p(e8390_base) & E8390_TRANS)
1810 printk(KERN_WARNING "%s: trigger_send() called with the transmitter busy.\n",
1814 outb_p(length & 0xff, e8390_base + EN0_TCNTLO);
1815 outb_p(length >> 8, e8390_base + EN0_TCNTHI);
1816 outb_p(start_page, e8390_base + EN0_TPSR);
1817 outb_p(E8390_NODMA+E8390_TRANS+E8390_START, e8390_base+E8390_CMD);