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,
293 cistpl_io_t *io = &cfg->io;
295 if (cfg->index == 0 || cfg->io.nwin == 0)
298 p_dev->conf.ConfigIndex = 0x05;
299 /* For multifunction cards, by convention, we configure the
300 network function with window 0, and serial with window 1 */
302 i = (io->win[1].len > io->win[0].len);
303 p_dev->io.BasePort2 = io->win[1-i].base;
304 p_dev->io.NumPorts2 = io->win[1-i].len;
306 i = p_dev->io.NumPorts2 = 0;
308 p_dev->io.BasePort1 = io->win[i].base;
309 p_dev->io.NumPorts1 = io->win[i].len;
310 p_dev->io.IOAddrLines = io->flags & CISTPL_IO_LINES_MASK;
311 if (p_dev->io.NumPorts1 + p_dev->io.NumPorts2 >= 32)
312 return try_io_port(p_dev);
317 static int axnet_config(struct pcmcia_device *link)
319 struct net_device *dev = link->priv;
320 axnet_dev_t *info = PRIV(dev);
321 int i, j, last_ret, last_fn;
322 DECLARE_MAC_BUF(mac);
324 DEBUG(0, "axnet_config(0x%p)\n", link);
326 /* don't trust the CIS on this; Linksys got it wrong */
327 link->conf.Present = 0x63;
328 last_ret = pcmcia_loop_config(link, axnet_configcheck, NULL);
329 if (last_ret != CS_SUCCESS) {
330 cs_error(link, RequestIO, last_ret);
334 CS_CHECK(RequestIRQ, pcmcia_request_irq(link, &link->irq));
336 if (link->io.NumPorts2 == 8) {
337 link->conf.Attributes |= CONF_ENABLE_SPKR;
338 link->conf.Status = CCSR_AUDIO_ENA;
341 CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link, &link->conf));
342 dev->irq = link->irq.AssignedIRQ;
343 dev->base_addr = link->io.BasePort1;
345 if (!get_prom(link)) {
346 printk(KERN_NOTICE "axnet_cs: this is not an AX88190 card!\n");
347 printk(KERN_NOTICE "axnet_cs: use pcnet_cs instead.\n");
351 ei_status.name = "AX88190";
352 ei_status.word16 = 1;
353 ei_status.tx_start_page = AXNET_START_PG;
354 ei_status.rx_start_page = AXNET_START_PG + TX_PAGES;
355 ei_status.stop_page = AXNET_STOP_PG;
356 ei_status.reset_8390 = &axnet_reset_8390;
357 ei_status.get_8390_hdr = &get_8390_hdr;
358 ei_status.block_input = &block_input;
359 ei_status.block_output = &block_output;
361 if (inb(dev->base_addr + AXNET_TEST) != 0)
362 info->flags |= IS_AX88790;
364 info->flags |= IS_AX88190;
366 if (info->flags & IS_AX88790)
367 outb(0x10, dev->base_addr + AXNET_GPIO); /* select Internal PHY */
369 for (i = 0; i < 32; i++) {
370 j = mdio_read(dev->base_addr + AXNET_MII_EEP, i, 1);
371 if ((j != 0) && (j != 0xffff)) break;
374 /* Maybe PHY is in power down mode. (PPD_SET = 1)
375 Bit 2 of CCSR is active low. */
377 conf_reg_t reg = { 0, CS_WRITE, CISREG_CCSR, 0x04 };
378 pcmcia_access_configuration_register(link, ®);
379 for (i = 0; i < 32; i++) {
380 j = mdio_read(dev->base_addr + AXNET_MII_EEP, i, 1);
381 if ((j != 0) && (j != 0xffff)) break;
385 info->phy_id = (i < 32) ? i : -1;
386 link->dev_node = &info->node;
387 SET_NETDEV_DEV(dev, &handle_to_dev(link));
389 if (register_netdev(dev) != 0) {
390 printk(KERN_NOTICE "axnet_cs: register_netdev() failed\n");
391 link->dev_node = NULL;
395 strcpy(info->node.dev_name, dev->name);
397 printk(KERN_INFO "%s: Asix AX88%d90: io %#3lx, irq %d, "
399 dev->name, ((info->flags & IS_AX88790) ? 7 : 1),
400 dev->base_addr, dev->irq,
401 print_mac(mac, dev->dev_addr));
402 if (info->phy_id != -1) {
403 DEBUG(0, " MII transceiver at index %d, status %x.\n", info->phy_id, j);
405 printk(KERN_NOTICE " No MII transceivers found!\n");
410 cs_error(link, last_fn, last_ret);
416 /*======================================================================
418 After a card is removed, axnet_release() will unregister the net
419 device, and release the PCMCIA configuration. If the device is
420 still open, this will be postponed until it is closed.
422 ======================================================================*/
424 static void axnet_release(struct pcmcia_device *link)
426 pcmcia_disable_device(link);
429 static int axnet_suspend(struct pcmcia_device *link)
431 struct net_device *dev = link->priv;
434 netif_device_detach(dev);
439 static int axnet_resume(struct pcmcia_device *link)
441 struct net_device *dev = link->priv;
444 axnet_reset_8390(dev);
445 AX88190_init(dev, 1);
446 netif_device_attach(dev);
453 /*======================================================================
455 MII interface support
457 ======================================================================*/
459 #define MDIO_SHIFT_CLK 0x01
460 #define MDIO_DATA_WRITE0 0x00
461 #define MDIO_DATA_WRITE1 0x08
462 #define MDIO_DATA_READ 0x04
463 #define MDIO_MASK 0x0f
464 #define MDIO_ENB_IN 0x02
466 static void mdio_sync(unsigned int addr)
469 for (bits = 0; bits < 32; bits++) {
470 outb_p(MDIO_DATA_WRITE1, addr);
471 outb_p(MDIO_DATA_WRITE1 | MDIO_SHIFT_CLK, addr);
475 static int mdio_read(unsigned int addr, int phy_id, int loc)
477 u_int cmd = (0xf6<<10)|(phy_id<<5)|loc;
481 for (i = 14; i >= 0; i--) {
482 int dat = (cmd&(1<<i)) ? MDIO_DATA_WRITE1 : MDIO_DATA_WRITE0;
484 outb_p(dat | MDIO_SHIFT_CLK, addr);
486 for (i = 19; i > 0; i--) {
487 outb_p(MDIO_ENB_IN, addr);
488 retval = (retval << 1) | ((inb_p(addr) & MDIO_DATA_READ) != 0);
489 outb_p(MDIO_ENB_IN | MDIO_SHIFT_CLK, addr);
491 return (retval>>1) & 0xffff;
494 static void mdio_write(unsigned int addr, int phy_id, int loc, int value)
496 u_int cmd = (0x05<<28)|(phy_id<<23)|(loc<<18)|(1<<17)|value;
500 for (i = 31; i >= 0; i--) {
501 int dat = (cmd&(1<<i)) ? MDIO_DATA_WRITE1 : MDIO_DATA_WRITE0;
503 outb_p(dat | MDIO_SHIFT_CLK, addr);
505 for (i = 1; i >= 0; i--) {
506 outb_p(MDIO_ENB_IN, addr);
507 outb_p(MDIO_ENB_IN | MDIO_SHIFT_CLK, addr);
511 /*====================================================================*/
513 static int axnet_open(struct net_device *dev)
516 axnet_dev_t *info = PRIV(dev);
517 struct pcmcia_device *link = info->p_dev;
518 unsigned int nic_base = dev->base_addr;
520 DEBUG(2, "axnet_open('%s')\n", dev->name);
522 if (!pcmcia_dev_present(link))
525 outb_p(0xFF, nic_base + EN0_ISR); /* Clear bogus intr. */
526 ret = request_irq(dev->irq, ei_irq_wrapper, IRQF_SHARED, "axnet_cs", dev);
532 info->link_status = 0x00;
533 init_timer(&info->watchdog);
534 info->watchdog.function = &ei_watchdog;
535 info->watchdog.data = (u_long)dev;
536 info->watchdog.expires = jiffies + HZ;
537 add_timer(&info->watchdog);
542 /*====================================================================*/
544 static int axnet_close(struct net_device *dev)
546 axnet_dev_t *info = PRIV(dev);
547 struct pcmcia_device *link = info->p_dev;
549 DEBUG(2, "axnet_close('%s')\n", dev->name);
552 free_irq(dev->irq, dev);
555 netif_stop_queue(dev);
556 del_timer_sync(&info->watchdog);
561 /*======================================================================
563 Hard reset the card. This used to pause for the same period that
564 a 8390 reset command required, but that shouldn't be necessary.
566 ======================================================================*/
568 static void axnet_reset_8390(struct net_device *dev)
570 unsigned int nic_base = dev->base_addr;
573 ei_status.txing = ei_status.dmaing = 0;
575 outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, nic_base + E8390_CMD);
577 outb(inb(nic_base + AXNET_RESET), nic_base + AXNET_RESET);
579 for (i = 0; i < 100; i++) {
580 if ((inb_p(nic_base+EN0_ISR) & ENISR_RESET) != 0)
584 outb_p(ENISR_RESET, nic_base + EN0_ISR); /* Ack intr. */
587 printk(KERN_ERR "%s: axnet_reset_8390() did not complete.\n",
590 } /* axnet_reset_8390 */
592 /*====================================================================*/
594 static irqreturn_t ei_irq_wrapper(int irq, void *dev_id)
596 struct net_device *dev = dev_id;
597 PRIV(dev)->stale = 0;
598 return ax_interrupt(irq, dev_id);
601 static void ei_watchdog(u_long arg)
603 struct net_device *dev = (struct net_device *)(arg);
604 axnet_dev_t *info = PRIV(dev);
605 unsigned int nic_base = dev->base_addr;
606 unsigned int mii_addr = nic_base + AXNET_MII_EEP;
609 if (!netif_device_present(dev)) goto reschedule;
611 /* Check for pending interrupt with expired latency timer: with
612 this, we can limp along even if the interrupt is blocked */
613 if (info->stale++ && (inb_p(nic_base + EN0_ISR) & ENISR_ALL)) {
614 if (!info->fast_poll)
615 printk(KERN_INFO "%s: interrupt(s) dropped!\n", dev->name);
616 ei_irq_wrapper(dev->irq, dev);
617 info->fast_poll = HZ;
619 if (info->fast_poll) {
621 info->watchdog.expires = jiffies + 1;
622 add_timer(&info->watchdog);
626 if (info->phy_id < 0)
628 link = mdio_read(mii_addr, info->phy_id, 1);
629 if (!link || (link == 0xffff)) {
630 printk(KERN_INFO "%s: MII is missing!\n", dev->name);
636 if (link != info->link_status) {
637 u_short p = mdio_read(mii_addr, info->phy_id, 5);
638 printk(KERN_INFO "%s: %s link beat\n", dev->name,
639 (link) ? "found" : "lost");
641 info->duplex_flag = (p & 0x0140) ? 0x80 : 0x00;
643 printk(KERN_INFO "%s: autonegotiation complete: "
644 "%sbaseT-%cD selected\n", dev->name,
645 ((p & 0x0180) ? "100" : "10"),
646 ((p & 0x0140) ? 'F' : 'H'));
648 printk(KERN_INFO "%s: link partner did not autonegotiate\n",
650 AX88190_init(dev, 1);
652 info->link_status = link;
656 info->watchdog.expires = jiffies + HZ;
657 add_timer(&info->watchdog);
660 static void netdev_get_drvinfo(struct net_device *dev,
661 struct ethtool_drvinfo *info)
663 strcpy(info->driver, "axnet_cs");
666 static const struct ethtool_ops netdev_ethtool_ops = {
667 .get_drvinfo = netdev_get_drvinfo,
670 /*====================================================================*/
672 static int axnet_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
674 axnet_dev_t *info = PRIV(dev);
675 u16 *data = (u16 *)&rq->ifr_ifru;
676 unsigned int mii_addr = dev->base_addr + AXNET_MII_EEP;
679 data[0] = info->phy_id;
680 case SIOCGMIIREG: /* Read MII PHY register. */
681 data[3] = mdio_read(mii_addr, data[0], data[1] & 0x1f);
683 case SIOCSMIIREG: /* Write MII PHY register. */
684 if (!capable(CAP_NET_ADMIN))
686 mdio_write(mii_addr, data[0], data[1] & 0x1f, data[2]);
692 /*====================================================================*/
694 static void get_8390_hdr(struct net_device *dev,
695 struct e8390_pkt_hdr *hdr,
698 unsigned int nic_base = dev->base_addr;
700 outb_p(0, nic_base + EN0_RSARLO); /* On page boundary */
701 outb_p(ring_page, nic_base + EN0_RSARHI);
702 outb_p(E8390_RREAD+E8390_START, nic_base + AXNET_CMD);
704 insw(nic_base + AXNET_DATAPORT, hdr,
705 sizeof(struct e8390_pkt_hdr)>>1);
706 /* Fix for big endian systems */
707 hdr->count = le16_to_cpu(hdr->count);
711 /*====================================================================*/
713 static void block_input(struct net_device *dev, int count,
714 struct sk_buff *skb, int ring_offset)
716 unsigned int nic_base = dev->base_addr;
717 int xfer_count = count;
718 char *buf = skb->data;
721 if ((ei_debug > 4) && (count != 4))
722 printk(KERN_DEBUG "%s: [bi=%d]\n", dev->name, count+4);
724 outb_p(ring_offset & 0xff, nic_base + EN0_RSARLO);
725 outb_p(ring_offset >> 8, nic_base + EN0_RSARHI);
726 outb_p(E8390_RREAD+E8390_START, nic_base + AXNET_CMD);
728 insw(nic_base + AXNET_DATAPORT,buf,count>>1);
730 buf[count-1] = inb(nic_base + AXNET_DATAPORT), xfer_count++;
734 /*====================================================================*/
736 static void block_output(struct net_device *dev, int count,
737 const u_char *buf, const int start_page)
739 unsigned int nic_base = dev->base_addr;
743 printk(KERN_DEBUG "%s: [bo=%d]\n", dev->name, count);
746 /* Round the count up for word writes. Do we need to do this?
747 What effect will an odd byte count have on the 8390?
748 I should check someday. */
752 outb_p(0x00, nic_base + EN0_RSARLO);
753 outb_p(start_page, nic_base + EN0_RSARHI);
754 outb_p(E8390_RWRITE+E8390_START, nic_base + AXNET_CMD);
755 outsw(nic_base + AXNET_DATAPORT, buf, count>>1);
758 static struct pcmcia_device_id axnet_ids[] = {
759 PCMCIA_PFC_DEVICE_MANF_CARD(0, 0x016c, 0x0081),
760 PCMCIA_DEVICE_MANF_CARD(0x018a, 0x0301),
761 PCMCIA_DEVICE_MANF_CARD(0x026f, 0x0301),
762 PCMCIA_DEVICE_MANF_CARD(0x026f, 0x0303),
763 PCMCIA_DEVICE_MANF_CARD(0x026f, 0x0309),
764 PCMCIA_DEVICE_MANF_CARD(0x0274, 0x1106),
765 PCMCIA_DEVICE_MANF_CARD(0x8a01, 0xc1ab),
766 PCMCIA_DEVICE_MANF_CARD(0x021b, 0x0202),
767 PCMCIA_DEVICE_MANF_CARD(0xffff, 0x1090),
768 PCMCIA_DEVICE_PROD_ID12("AmbiCom,Inc.", "Fast Ethernet PC Card(AMB8110)", 0x49b020a7, 0x119cc9fc),
769 PCMCIA_DEVICE_PROD_ID124("Fast Ethernet", "16-bit PC Card", "AX88190", 0xb4be14e3, 0x9a12eb6a, 0xab9be5ef),
770 PCMCIA_DEVICE_PROD_ID12("ASIX", "AX88190", 0x0959823b, 0xab9be5ef),
771 PCMCIA_DEVICE_PROD_ID12("Billionton", "LNA-100B", 0x552ab682, 0xbc3b87e1),
772 PCMCIA_DEVICE_PROD_ID12("CHEETAH ETHERCARD", "EN2228", 0x00fa7bc8, 0x00e990cc),
773 PCMCIA_DEVICE_PROD_ID12("CNet", "CNF301", 0xbc477dde, 0x78c5f40b),
774 PCMCIA_DEVICE_PROD_ID12("corega K.K.", "corega FEther PCC-TXD", 0x5261440f, 0x436768c5),
775 PCMCIA_DEVICE_PROD_ID12("corega K.K.", "corega FEtherII PCC-TXD", 0x5261440f, 0x730df72e),
776 PCMCIA_DEVICE_PROD_ID12("Dynalink", "L100C16", 0x55632fd5, 0x66bc2a90),
777 PCMCIA_DEVICE_PROD_ID12("Linksys", "EtherFast 10/100 PC Card (PCMPC100 V3)", 0x0733cc81, 0x232019a8),
778 PCMCIA_DEVICE_PROD_ID12("MELCO", "LPC3-TX", 0x481e0094, 0xf91af609),
779 PCMCIA_DEVICE_PROD_ID12("PCMCIA", "100BASE", 0x281f1c5d, 0x7c2add04),
780 PCMCIA_DEVICE_PROD_ID12("PCMCIA", "FastEtherCard", 0x281f1c5d, 0x7ef26116),
781 PCMCIA_DEVICE_PROD_ID12("PCMCIA", "FEP501", 0x281f1c5d, 0x2e272058),
782 PCMCIA_DEVICE_PROD_ID14("Network Everywhere", "AX88190", 0x820a67b6, 0xab9be5ef),
785 MODULE_DEVICE_TABLE(pcmcia, axnet_ids);
787 static struct pcmcia_driver axnet_cs_driver = {
788 .owner = THIS_MODULE,
792 .probe = axnet_probe,
793 .remove = axnet_detach,
794 .id_table = axnet_ids,
795 .suspend = axnet_suspend,
796 .resume = axnet_resume,
799 static int __init init_axnet_cs(void)
801 return pcmcia_register_driver(&axnet_cs_driver);
804 static void __exit exit_axnet_cs(void)
806 pcmcia_unregister_driver(&axnet_cs_driver);
809 module_init(init_axnet_cs);
810 module_exit(exit_axnet_cs);
812 /*====================================================================*/
814 /* 8390.c: A general NS8390 ethernet driver core for linux. */
816 Written 1992-94 by Donald Becker.
818 Copyright 1993 United States Government as represented by the
819 Director, National Security Agency.
821 This software may be used and distributed according to the terms
822 of the GNU General Public License, incorporated herein by reference.
824 The author may be reached as becker@scyld.com, or C/O
825 Scyld Computing Corporation
826 410 Severn Ave., Suite 210
829 This is the chip-specific code for many 8390-based ethernet adaptors.
830 This is not a complete driver, it must be combined with board-specific
831 code such as ne.c, wd.c, 3c503.c, etc.
833 Seeing how at least eight drivers use this code, (not counting the
834 PCMCIA ones either) it is easy to break some card by what seems like
835 a simple innocent change. Please contact me or Donald if you think
836 you have found something that needs changing. -- PG
840 Paul Gortmaker : remove set_bit lock, other cleanups.
841 Paul Gortmaker : add ei_get_8390_hdr() so we can pass skb's to
842 ei_block_input() for eth_io_copy_and_sum().
843 Paul Gortmaker : exchange static int ei_pingpong for a #define,
844 also add better Tx error handling.
845 Paul Gortmaker : rewrite Rx overrun handling as per NS specs.
846 Alexey Kuznetsov : use the 8390's six bit hash multicast filter.
847 Paul Gortmaker : tweak ANK's above multicast changes a bit.
848 Paul Gortmaker : update packet statistics for v2.1.x
849 Alan Cox : support arbitary stupid port mappings on the
850 68K Macintosh. Support >16bit I/O spaces
851 Paul Gortmaker : add kmod support for auto-loading of the 8390
852 module by all drivers that require it.
853 Alan Cox : Spinlocking work, added 'BUG_83C690'
854 Paul Gortmaker : Separate out Tx timeout code from Tx path.
857 The National Semiconductor LAN Databook, and the 3Com 3c503 databook.
861 static const char *version_8390 =
862 "8390.c:v1.10cvs 9/23/94 Donald Becker (becker@scyld.com)\n";
864 #include <linux/bitops.h>
866 #include <linux/fcntl.h>
867 #include <linux/in.h>
868 #include <linux/interrupt.h>
870 #include <linux/etherdevice.h>
874 /* These are the operational function interfaces to board-specific
876 void reset_8390(struct net_device *dev)
877 Resets the board associated with DEV, including a hardware reset of
878 the 8390. This is only called when there is a transmit timeout, and
879 it is always followed by 8390_init().
880 void block_output(struct net_device *dev, int count, const unsigned char *buf,
882 Write the COUNT bytes of BUF to the packet buffer at START_PAGE. The
883 "page" value uses the 8390's 256-byte pages.
884 void get_8390_hdr(struct net_device *dev, struct e8390_hdr *hdr, int ring_page)
885 Read the 4 byte, page aligned 8390 header. *If* there is a
886 subsequent read, it will be of the rest of the packet.
887 void block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset)
888 Read COUNT bytes from the packet buffer into the skb data area. Start
889 reading from RING_OFFSET, the address as the 8390 sees it. This will always
890 follow the read of the 8390 header.
892 #define ei_reset_8390 (ei_local->reset_8390)
893 #define ei_block_output (ei_local->block_output)
894 #define ei_block_input (ei_local->block_input)
895 #define ei_get_8390_hdr (ei_local->get_8390_hdr)
897 /* use 0 for production, 1 for verification, >2 for debug */
902 /* Index to functions. */
903 static void ei_tx_intr(struct net_device *dev);
904 static void ei_tx_err(struct net_device *dev);
905 static void ei_tx_timeout(struct net_device *dev);
906 static void ei_receive(struct net_device *dev);
907 static void ei_rx_overrun(struct net_device *dev);
909 /* Routines generic to NS8390-based boards. */
910 static void NS8390_trigger_send(struct net_device *dev, unsigned int length,
912 static void set_multicast_list(struct net_device *dev);
913 static void do_set_multicast_list(struct net_device *dev);
916 * SMP and the 8390 setup.
918 * The 8390 isnt exactly designed to be multithreaded on RX/TX. There is
919 * a page register that controls bank and packet buffer access. We guard
920 * this with ei_local->page_lock. Nobody should assume or set the page other
921 * than zero when the lock is not held. Lock holders must restore page 0
922 * before unlocking. Even pure readers must take the lock to protect in
925 * To make life difficult the chip can also be very slow. We therefore can't
926 * just use spinlocks. For the longer lockups we disable the irq the device
927 * sits on and hold the lock. We must hold the lock because there is a dual
928 * processor case other than interrupts (get stats/set multicast list in
929 * parallel with each other and transmit).
931 * Note: in theory we can just disable the irq on the card _but_ there is
932 * a latency on SMP irq delivery. So we can easily go "disable irq" "sync irqs"
933 * enter lock, take the queued irq. So we waddle instead of flying.
935 * Finally by special arrangement for the purpose of being generally
936 * annoying the transmit function is called bh atomic. That places
937 * restrictions on the user context callers as disable_irq won't save
942 * ax_open - Open/initialize the board.
943 * @dev: network device to initialize
945 * This routine goes all-out, setting everything
946 * up anew at each open, even though many of these registers should only
947 * need to be set once at boot.
949 static int ax_open(struct net_device *dev)
952 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
954 #ifdef HAVE_TX_TIMEOUT
955 /* The card I/O part of the driver (e.g. 3c503) can hook a Tx timeout
956 wrapper that does e.g. media check & then calls ei_tx_timeout. */
957 if (dev->tx_timeout == NULL)
958 dev->tx_timeout = ei_tx_timeout;
959 if (dev->watchdog_timeo <= 0)
960 dev->watchdog_timeo = TX_TIMEOUT;
964 * Grab the page lock so we own the register set, then call
968 spin_lock_irqsave(&ei_local->page_lock, flags);
969 AX88190_init(dev, 1);
970 /* Set the flag before we drop the lock, That way the IRQ arrives
971 after its set and we get no silly warnings */
972 netif_start_queue(dev);
973 spin_unlock_irqrestore(&ei_local->page_lock, flags);
974 ei_local->irqlock = 0;
978 #define dev_lock(dev) (((struct ei_device *)netdev_priv(dev))->page_lock)
981 * ax_close - shut down network device
982 * @dev: network device to close
984 * Opposite of ax_open(). Only used when "ifconfig <devname> down" is done.
986 static int ax_close(struct net_device *dev)
991 * Hold the page lock during close
994 spin_lock_irqsave(&dev_lock(dev), flags);
995 AX88190_init(dev, 0);
996 spin_unlock_irqrestore(&dev_lock(dev), flags);
997 netif_stop_queue(dev);
1002 * ei_tx_timeout - handle transmit time out condition
1003 * @dev: network device which has apparently fallen asleep
1005 * Called by kernel when device never acknowledges a transmit has
1006 * completed (or failed) - i.e. never posted a Tx related interrupt.
1009 static void ei_tx_timeout(struct net_device *dev)
1011 long e8390_base = dev->base_addr;
1012 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1013 int txsr, isr, tickssofar = jiffies - dev->trans_start;
1014 unsigned long flags;
1016 dev->stats.tx_errors++;
1018 spin_lock_irqsave(&ei_local->page_lock, flags);
1019 txsr = inb(e8390_base+EN0_TSR);
1020 isr = inb(e8390_base+EN0_ISR);
1021 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1023 printk(KERN_DEBUG "%s: Tx timed out, %s TSR=%#2x, ISR=%#2x, t=%d.\n",
1024 dev->name, (txsr & ENTSR_ABT) ? "excess collisions." :
1025 (isr) ? "lost interrupt?" : "cable problem?", txsr, isr, tickssofar);
1027 if (!isr && !dev->stats.tx_packets)
1029 /* The 8390 probably hasn't gotten on the cable yet. */
1030 ei_local->interface_num ^= 1; /* Try a different xcvr. */
1033 /* Ugly but a reset can be slow, yet must be protected */
1035 spin_lock_irqsave(&ei_local->page_lock, flags);
1037 /* Try to restart the card. Perhaps the user has fixed something. */
1039 AX88190_init(dev, 1);
1041 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1042 netif_wake_queue(dev);
1046 * ei_start_xmit - begin packet transmission
1047 * @skb: packet to be sent
1048 * @dev: network device to which packet is sent
1050 * Sends a packet to an 8390 network device.
1053 static int ei_start_xmit(struct sk_buff *skb, struct net_device *dev)
1055 long e8390_base = dev->base_addr;
1056 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1057 int length, send_length, output_page;
1058 unsigned long flags;
1059 u8 packet[ETH_ZLEN];
1061 netif_stop_queue(dev);
1065 /* Mask interrupts from the ethercard.
1066 SMP: We have to grab the lock here otherwise the IRQ handler
1067 on another CPU can flip window and race the IRQ mask set. We end
1068 up trashing the mcast filter not disabling irqs if we don't lock */
1070 spin_lock_irqsave(&ei_local->page_lock, flags);
1071 outb_p(0x00, e8390_base + EN0_IMR);
1072 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1075 * Slow phase with lock held.
1078 spin_lock_irqsave(&ei_local->page_lock, flags);
1080 ei_local->irqlock = 1;
1082 send_length = max(length, ETH_ZLEN);
1085 * We have two Tx slots available for use. Find the first free
1086 * slot, and then perform some sanity checks. With two Tx bufs,
1087 * you get very close to transmitting back-to-back packets. With
1088 * only one Tx buf, the transmitter sits idle while you reload the
1089 * card, leaving a substantial gap between each transmitted packet.
1092 if (ei_local->tx1 == 0)
1094 output_page = ei_local->tx_start_page;
1095 ei_local->tx1 = send_length;
1096 if (ei_debug && ei_local->tx2 > 0)
1097 printk(KERN_DEBUG "%s: idle transmitter tx2=%d, lasttx=%d, txing=%d.\n",
1098 dev->name, ei_local->tx2, ei_local->lasttx, ei_local->txing);
1100 else if (ei_local->tx2 == 0)
1102 output_page = ei_local->tx_start_page + TX_PAGES/2;
1103 ei_local->tx2 = send_length;
1104 if (ei_debug && ei_local->tx1 > 0)
1105 printk(KERN_DEBUG "%s: idle transmitter, tx1=%d, lasttx=%d, txing=%d.\n",
1106 dev->name, ei_local->tx1, ei_local->lasttx, ei_local->txing);
1109 { /* We should never get here. */
1111 printk(KERN_DEBUG "%s: No Tx buffers free! tx1=%d tx2=%d last=%d\n",
1112 dev->name, ei_local->tx1, ei_local->tx2, ei_local->lasttx);
1113 ei_local->irqlock = 0;
1114 netif_stop_queue(dev);
1115 outb_p(ENISR_ALL, e8390_base + EN0_IMR);
1116 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1117 dev->stats.tx_errors++;
1122 * Okay, now upload the packet and trigger a send if the transmitter
1123 * isn't already sending. If it is busy, the interrupt handler will
1124 * trigger the send later, upon receiving a Tx done interrupt.
1127 if (length == skb->len)
1128 ei_block_output(dev, length, skb->data, output_page);
1130 memset(packet, 0, ETH_ZLEN);
1131 skb_copy_from_linear_data(skb, packet, skb->len);
1132 ei_block_output(dev, length, packet, output_page);
1135 if (! ei_local->txing)
1137 ei_local->txing = 1;
1138 NS8390_trigger_send(dev, send_length, output_page);
1139 dev->trans_start = jiffies;
1140 if (output_page == ei_local->tx_start_page)
1143 ei_local->lasttx = -1;
1148 ei_local->lasttx = -2;
1151 else ei_local->txqueue++;
1153 if (ei_local->tx1 && ei_local->tx2)
1154 netif_stop_queue(dev);
1156 netif_start_queue(dev);
1158 /* Turn 8390 interrupts back on. */
1159 ei_local->irqlock = 0;
1160 outb_p(ENISR_ALL, e8390_base + EN0_IMR);
1162 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1164 dev_kfree_skb (skb);
1165 dev->stats.tx_bytes += send_length;
1171 * ax_interrupt - handle the interrupts from an 8390
1172 * @irq: interrupt number
1173 * @dev_id: a pointer to the net_device
1176 * Handle the ether interface interrupts. We pull packets from
1177 * the 8390 via the card specific functions and fire them at the networking
1178 * stack. We also handle transmit completions and wake the transmit path if
1179 * necessary. We also update the counters and do other housekeeping as
1183 static irqreturn_t ax_interrupt(int irq, void *dev_id)
1185 struct net_device *dev = dev_id;
1187 int interrupts, nr_serviced = 0, i;
1188 struct ei_device *ei_local;
1191 e8390_base = dev->base_addr;
1192 ei_local = netdev_priv(dev);
1195 * Protect the irq test too.
1198 spin_lock(&ei_local->page_lock);
1200 if (ei_local->irqlock)
1202 #if 1 /* This might just be an interrupt for a PCI device sharing this line */
1203 /* The "irqlock" check is only for testing. */
1204 printk(ei_local->irqlock
1205 ? "%s: Interrupted while interrupts are masked! isr=%#2x imr=%#2x.\n"
1206 : "%s: Reentering the interrupt handler! isr=%#2x imr=%#2x.\n",
1207 dev->name, inb_p(e8390_base + EN0_ISR),
1208 inb_p(e8390_base + EN0_IMR));
1210 spin_unlock(&ei_local->page_lock);
1215 printk(KERN_DEBUG "%s: interrupt(isr=%#2.2x).\n", dev->name,
1216 inb_p(e8390_base + EN0_ISR));
1218 outb_p(0x00, e8390_base + EN0_ISR);
1219 ei_local->irqlock = 1;
1221 /* !!Assumption!! -- we stay in page 0. Don't break this. */
1222 while ((interrupts = inb_p(e8390_base + EN0_ISR)) != 0
1223 && ++nr_serviced < MAX_SERVICE)
1225 if (!netif_running(dev) || (interrupts == 0xff)) {
1227 printk(KERN_WARNING "%s: interrupt from stopped card\n", dev->name);
1228 outb_p(interrupts, e8390_base + EN0_ISR);
1234 /* AX88190 bug fix. */
1235 outb_p(interrupts, e8390_base + EN0_ISR);
1236 for (i = 0; i < 10; i++) {
1237 if (!(inb(e8390_base + EN0_ISR) & interrupts))
1239 outb_p(0, e8390_base + EN0_ISR);
1240 outb_p(interrupts, e8390_base + EN0_ISR);
1242 if (interrupts & ENISR_OVER)
1244 else if (interrupts & (ENISR_RX+ENISR_RX_ERR))
1246 /* Got a good (?) packet. */
1249 /* Push the next to-transmit packet through. */
1250 if (interrupts & ENISR_TX)
1252 else if (interrupts & ENISR_TX_ERR)
1255 if (interrupts & ENISR_COUNTERS)
1257 dev->stats.rx_frame_errors += inb_p(e8390_base + EN0_COUNTER0);
1258 dev->stats.rx_crc_errors += inb_p(e8390_base + EN0_COUNTER1);
1259 dev->stats.rx_missed_errors+= inb_p(e8390_base + EN0_COUNTER2);
1263 if (interrupts && ei_debug > 3)
1266 if (nr_serviced >= MAX_SERVICE)
1268 /* 0xFF is valid for a card removal */
1269 if(interrupts!=0xFF)
1270 printk(KERN_WARNING "%s: Too much work at interrupt, status %#2.2x\n",
1271 dev->name, interrupts);
1272 outb_p(ENISR_ALL, e8390_base + EN0_ISR); /* Ack. most intrs. */
1274 printk(KERN_WARNING "%s: unknown interrupt %#2x\n", dev->name, interrupts);
1275 outb_p(0xff, e8390_base + EN0_ISR); /* Ack. all intrs. */
1279 /* Turn 8390 interrupts back on. */
1280 ei_local->irqlock = 0;
1281 outb_p(ENISR_ALL, e8390_base + EN0_IMR);
1283 spin_unlock(&ei_local->page_lock);
1284 return IRQ_RETVAL(handled);
1288 * ei_tx_err - handle transmitter error
1289 * @dev: network device which threw the exception
1291 * A transmitter error has happened. Most likely excess collisions (which
1292 * is a fairly normal condition). If the error is one where the Tx will
1293 * have been aborted, we try and send another one right away, instead of
1294 * letting the failed packet sit and collect dust in the Tx buffer. This
1295 * is a much better solution as it avoids kernel based Tx timeouts, and
1296 * an unnecessary card reset.
1298 * Called with lock held.
1301 static void ei_tx_err(struct net_device *dev)
1303 long e8390_base = dev->base_addr;
1304 unsigned char txsr = inb_p(e8390_base+EN0_TSR);
1305 unsigned char tx_was_aborted = txsr & (ENTSR_ABT+ENTSR_FU);
1307 #ifdef VERBOSE_ERROR_DUMP
1308 printk(KERN_DEBUG "%s: transmitter error (%#2x): ", dev->name, txsr);
1309 if (txsr & ENTSR_ABT)
1310 printk("excess-collisions ");
1311 if (txsr & ENTSR_ND)
1312 printk("non-deferral ");
1313 if (txsr & ENTSR_CRS)
1314 printk("lost-carrier ");
1315 if (txsr & ENTSR_FU)
1316 printk("FIFO-underrun ");
1317 if (txsr & ENTSR_CDH)
1318 printk("lost-heartbeat ");
1326 dev->stats.tx_errors++;
1327 if (txsr & ENTSR_CRS) dev->stats.tx_carrier_errors++;
1328 if (txsr & ENTSR_CDH) dev->stats.tx_heartbeat_errors++;
1329 if (txsr & ENTSR_OWC) dev->stats.tx_window_errors++;
1334 * ei_tx_intr - transmit interrupt handler
1335 * @dev: network device for which tx intr is handled
1337 * We have finished a transmit: check for errors and then trigger the next
1338 * packet to be sent. Called with lock held.
1341 static void ei_tx_intr(struct net_device *dev)
1343 long e8390_base = dev->base_addr;
1344 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1345 int status = inb(e8390_base + EN0_TSR);
1348 * There are two Tx buffers, see which one finished, and trigger
1349 * the send of another one if it exists.
1351 ei_local->txqueue--;
1353 if (ei_local->tx1 < 0)
1355 if (ei_local->lasttx != 1 && ei_local->lasttx != -1)
1356 printk(KERN_ERR "%s: bogus last_tx_buffer %d, tx1=%d.\n",
1357 ei_local->name, ei_local->lasttx, ei_local->tx1);
1359 if (ei_local->tx2 > 0)
1361 ei_local->txing = 1;
1362 NS8390_trigger_send(dev, ei_local->tx2, ei_local->tx_start_page + 6);
1363 dev->trans_start = jiffies;
1365 ei_local->lasttx = 2;
1367 else ei_local->lasttx = 20, ei_local->txing = 0;
1369 else if (ei_local->tx2 < 0)
1371 if (ei_local->lasttx != 2 && ei_local->lasttx != -2)
1372 printk("%s: bogus last_tx_buffer %d, tx2=%d.\n",
1373 ei_local->name, ei_local->lasttx, ei_local->tx2);
1375 if (ei_local->tx1 > 0)
1377 ei_local->txing = 1;
1378 NS8390_trigger_send(dev, ei_local->tx1, ei_local->tx_start_page);
1379 dev->trans_start = jiffies;
1381 ei_local->lasttx = 1;
1384 ei_local->lasttx = 10, ei_local->txing = 0;
1386 // else printk(KERN_WARNING "%s: unexpected TX-done interrupt, lasttx=%d.\n",
1387 // dev->name, ei_local->lasttx);
1389 /* Minimize Tx latency: update the statistics after we restart TXing. */
1390 if (status & ENTSR_COL)
1391 dev->stats.collisions++;
1392 if (status & ENTSR_PTX)
1393 dev->stats.tx_packets++;
1396 dev->stats.tx_errors++;
1397 if (status & ENTSR_ABT)
1399 dev->stats.tx_aborted_errors++;
1400 dev->stats.collisions += 16;
1402 if (status & ENTSR_CRS)
1403 dev->stats.tx_carrier_errors++;
1404 if (status & ENTSR_FU)
1405 dev->stats.tx_fifo_errors++;
1406 if (status & ENTSR_CDH)
1407 dev->stats.tx_heartbeat_errors++;
1408 if (status & ENTSR_OWC)
1409 dev->stats.tx_window_errors++;
1411 netif_wake_queue(dev);
1415 * ei_receive - receive some packets
1416 * @dev: network device with which receive will be run
1418 * We have a good packet(s), get it/them out of the buffers.
1419 * Called with lock held.
1422 static void ei_receive(struct net_device *dev)
1424 long e8390_base = dev->base_addr;
1425 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1426 unsigned char rxing_page, this_frame, next_frame;
1427 unsigned short current_offset;
1428 int rx_pkt_count = 0;
1429 struct e8390_pkt_hdr rx_frame;
1431 while (++rx_pkt_count < 10)
1433 int pkt_len, pkt_stat;
1435 /* Get the rx page (incoming packet pointer). */
1436 rxing_page = inb_p(e8390_base + EN1_CURPAG -1);
1438 /* Remove one frame from the ring. Boundary is always a page behind. */
1439 this_frame = inb_p(e8390_base + EN0_BOUNDARY) + 1;
1440 if (this_frame >= ei_local->stop_page)
1441 this_frame = ei_local->rx_start_page;
1443 /* Someday we'll omit the previous, iff we never get this message.
1444 (There is at least one clone claimed to have a problem.)
1446 Keep quiet if it looks like a card removal. One problem here
1447 is that some clones crash in roughly the same way.
1449 if (ei_debug > 0 && this_frame != ei_local->current_page && (this_frame!=0x0 || rxing_page!=0xFF))
1450 printk(KERN_ERR "%s: mismatched read page pointers %2x vs %2x.\n",
1451 dev->name, this_frame, ei_local->current_page);
1453 if (this_frame == rxing_page) /* Read all the frames? */
1454 break; /* Done for now */
1456 current_offset = this_frame << 8;
1457 ei_get_8390_hdr(dev, &rx_frame, this_frame);
1459 pkt_len = rx_frame.count - sizeof(struct e8390_pkt_hdr);
1460 pkt_stat = rx_frame.status;
1462 next_frame = this_frame + 1 + ((pkt_len+4)>>8);
1464 if (pkt_len < 60 || pkt_len > 1518)
1467 printk(KERN_DEBUG "%s: bogus packet size: %d, status=%#2x nxpg=%#2x.\n",
1468 dev->name, rx_frame.count, rx_frame.status,
1470 dev->stats.rx_errors++;
1471 dev->stats.rx_length_errors++;
1473 else if ((pkt_stat & 0x0F) == ENRSR_RXOK)
1475 struct sk_buff *skb;
1477 skb = dev_alloc_skb(pkt_len+2);
1481 printk(KERN_DEBUG "%s: Couldn't allocate a sk_buff of size %d.\n",
1482 dev->name, pkt_len);
1483 dev->stats.rx_dropped++;
1488 skb_reserve(skb,2); /* IP headers on 16 byte boundaries */
1489 skb_put(skb, pkt_len); /* Make room */
1490 ei_block_input(dev, pkt_len, skb, current_offset + sizeof(rx_frame));
1491 skb->protocol=eth_type_trans(skb,dev);
1493 dev->last_rx = jiffies;
1494 dev->stats.rx_packets++;
1495 dev->stats.rx_bytes += pkt_len;
1496 if (pkt_stat & ENRSR_PHY)
1497 dev->stats.multicast++;
1503 printk(KERN_DEBUG "%s: bogus packet: status=%#2x nxpg=%#2x size=%d\n",
1504 dev->name, rx_frame.status, rx_frame.next,
1506 dev->stats.rx_errors++;
1507 /* NB: The NIC counts CRC, frame and missed errors. */
1508 if (pkt_stat & ENRSR_FO)
1509 dev->stats.rx_fifo_errors++;
1511 next_frame = rx_frame.next;
1513 /* This _should_ never happen: it's here for avoiding bad clones. */
1514 if (next_frame >= ei_local->stop_page) {
1515 printk("%s: next frame inconsistency, %#2x\n", dev->name,
1517 next_frame = ei_local->rx_start_page;
1519 ei_local->current_page = next_frame;
1520 outb_p(next_frame-1, e8390_base+EN0_BOUNDARY);
1527 * ei_rx_overrun - handle receiver overrun
1528 * @dev: network device which threw exception
1530 * We have a receiver overrun: we have to kick the 8390 to get it started
1531 * again. Problem is that you have to kick it exactly as NS prescribes in
1532 * the updated datasheets, or "the NIC may act in an unpredictable manner."
1533 * This includes causing "the NIC to defer indefinitely when it is stopped
1534 * on a busy network." Ugh.
1535 * Called with lock held. Don't call this with the interrupts off or your
1536 * computer will hate you - it takes 10ms or so.
1539 static void ei_rx_overrun(struct net_device *dev)
1541 axnet_dev_t *info = PRIV(dev);
1542 long e8390_base = dev->base_addr;
1543 unsigned char was_txing, must_resend = 0;
1546 * Record whether a Tx was in progress and then issue the
1549 was_txing = inb_p(e8390_base+E8390_CMD) & E8390_TRANS;
1550 outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD);
1553 printk(KERN_DEBUG "%s: Receiver overrun.\n", dev->name);
1554 dev->stats.rx_over_errors++;
1557 * Wait a full Tx time (1.2ms) + some guard time, NS says 1.6ms total.
1558 * Early datasheets said to poll the reset bit, but now they say that
1559 * it "is not a reliable indicator and subsequently should be ignored."
1560 * We wait at least 10ms.
1566 * Reset RBCR[01] back to zero as per magic incantation.
1568 outb_p(0x00, e8390_base+EN0_RCNTLO);
1569 outb_p(0x00, e8390_base+EN0_RCNTHI);
1572 * See if any Tx was interrupted or not. According to NS, this
1573 * step is vital, and skipping it will cause no end of havoc.
1578 unsigned char tx_completed = inb_p(e8390_base+EN0_ISR) & (ENISR_TX+ENISR_TX_ERR);
1584 * Have to enter loopback mode and then restart the NIC before
1585 * you are allowed to slurp packets up off the ring.
1587 outb_p(E8390_TXOFF, e8390_base + EN0_TXCR);
1588 outb_p(E8390_NODMA + E8390_PAGE0 + E8390_START, e8390_base + E8390_CMD);
1591 * Clear the Rx ring of all the debris, and ack the interrupt.
1596 * Leave loopback mode, and resend any packet that got stopped.
1598 outb_p(E8390_TXCONFIG | info->duplex_flag, e8390_base + EN0_TXCR);
1600 outb_p(E8390_NODMA + E8390_PAGE0 + E8390_START + E8390_TRANS, e8390_base + E8390_CMD);
1604 * Collect the stats. This is called unlocked and from several contexts.
1607 static struct net_device_stats *get_stats(struct net_device *dev)
1609 long ioaddr = dev->base_addr;
1610 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1611 unsigned long flags;
1613 /* If the card is stopped, just return the present stats. */
1614 if (!netif_running(dev))
1617 spin_lock_irqsave(&ei_local->page_lock,flags);
1618 /* Read the counter registers, assuming we are in page 0. */
1619 dev->stats.rx_frame_errors += inb_p(ioaddr + EN0_COUNTER0);
1620 dev->stats.rx_crc_errors += inb_p(ioaddr + EN0_COUNTER1);
1621 dev->stats.rx_missed_errors+= inb_p(ioaddr + EN0_COUNTER2);
1622 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1628 * Form the 64 bit 8390 multicast table from the linked list of addresses
1629 * associated with this dev structure.
1632 static inline void make_mc_bits(u8 *bits, struct net_device *dev)
1634 struct dev_mc_list *dmi;
1637 for (dmi=dev->mc_list; dmi; dmi=dmi->next) {
1639 crc = ether_crc(ETH_ALEN, dmi->dmi_addr);
1641 * The 8390 uses the 6 most significant bits of the
1642 * CRC to index the multicast table.
1644 bits[crc>>29] |= (1<<((crc>>26)&7));
1649 * do_set_multicast_list - set/clear multicast filter
1650 * @dev: net device for which multicast filter is adjusted
1652 * Set or clear the multicast filter for this adaptor.
1653 * Must be called with lock held.
1656 static void do_set_multicast_list(struct net_device *dev)
1658 long e8390_base = dev->base_addr;
1660 struct ei_device *ei_local = (struct ei_device*)netdev_priv(dev);
1662 if (!(dev->flags&(IFF_PROMISC|IFF_ALLMULTI))) {
1663 memset(ei_local->mcfilter, 0, 8);
1665 make_mc_bits(ei_local->mcfilter, dev);
1667 /* set to accept-all */
1668 memset(ei_local->mcfilter, 0xFF, 8);
1671 outb_p(E8390_NODMA + E8390_PAGE1, e8390_base + E8390_CMD);
1672 for(i = 0; i < 8; i++)
1674 outb_p(ei_local->mcfilter[i], e8390_base + EN1_MULT_SHIFT(i));
1676 outb_p(E8390_NODMA + E8390_PAGE0, e8390_base + E8390_CMD);
1678 if(dev->flags&IFF_PROMISC)
1679 outb_p(E8390_RXCONFIG | 0x58, e8390_base + EN0_RXCR);
1680 else if(dev->flags&IFF_ALLMULTI || dev->mc_list)
1681 outb_p(E8390_RXCONFIG | 0x48, e8390_base + EN0_RXCR);
1683 outb_p(E8390_RXCONFIG | 0x40, e8390_base + EN0_RXCR);
1685 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, e8390_base+E8390_CMD);
1689 * Called without lock held. This is invoked from user context and may
1690 * be parallel to just about everything else. Its also fairly quick and
1691 * not called too often. Must protect against both bh and irq users
1694 static void set_multicast_list(struct net_device *dev)
1696 unsigned long flags;
1698 spin_lock_irqsave(&dev_lock(dev), flags);
1699 do_set_multicast_list(dev);
1700 spin_unlock_irqrestore(&dev_lock(dev), flags);
1704 * axdev_setup - init rest of 8390 device struct
1705 * @dev: network device structure to init
1707 * Initialize the rest of the 8390 device structure. Do NOT __init
1708 * this, as it is used by 8390 based modular drivers too.
1711 static void axdev_setup(struct net_device *dev)
1713 struct ei_device *ei_local;
1715 printk(version_8390);
1717 ei_local = (struct ei_device *)netdev_priv(dev);
1718 spin_lock_init(&ei_local->page_lock);
1720 dev->hard_start_xmit = &ei_start_xmit;
1721 dev->get_stats = get_stats;
1722 dev->set_multicast_list = &set_multicast_list;
1727 /* This page of functions should be 8390 generic */
1728 /* Follow National Semi's recommendations for initializing the "NIC". */
1731 * AX88190_init - initialize 8390 hardware
1732 * @dev: network device to initialize
1733 * @startp: boolean. non-zero value to initiate chip processing
1735 * Must be called with lock held.
1738 static void AX88190_init(struct net_device *dev, int startp)
1740 axnet_dev_t *info = PRIV(dev);
1741 long e8390_base = dev->base_addr;
1742 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1744 int endcfg = ei_local->word16 ? (0x48 | ENDCFG_WTS) : 0x48;
1746 if(sizeof(struct e8390_pkt_hdr)!=4)
1747 panic("8390.c: header struct mispacked\n");
1748 /* Follow National Semi's recommendations for initing the DP83902. */
1749 outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD); /* 0x21 */
1750 outb_p(endcfg, e8390_base + EN0_DCFG); /* 0x48 or 0x49 */
1751 /* Clear the remote byte count registers. */
1752 outb_p(0x00, e8390_base + EN0_RCNTLO);
1753 outb_p(0x00, e8390_base + EN0_RCNTHI);
1754 /* Set to monitor and loopback mode -- this is vital!. */
1755 outb_p(E8390_RXOFF|0x40, e8390_base + EN0_RXCR); /* 0x60 */
1756 outb_p(E8390_TXOFF, e8390_base + EN0_TXCR); /* 0x02 */
1757 /* Set the transmit page and receive ring. */
1758 outb_p(ei_local->tx_start_page, e8390_base + EN0_TPSR);
1759 ei_local->tx1 = ei_local->tx2 = 0;
1760 outb_p(ei_local->rx_start_page, e8390_base + EN0_STARTPG);
1761 outb_p(ei_local->stop_page-1, e8390_base + EN0_BOUNDARY); /* 3c503 says 0x3f,NS0x26*/
1762 ei_local->current_page = ei_local->rx_start_page; /* assert boundary+1 */
1763 outb_p(ei_local->stop_page, e8390_base + EN0_STOPPG);
1764 /* Clear the pending interrupts and mask. */
1765 outb_p(0xFF, e8390_base + EN0_ISR);
1766 outb_p(0x00, e8390_base + EN0_IMR);
1768 /* Copy the station address into the DS8390 registers. */
1770 outb_p(E8390_NODMA + E8390_PAGE1 + E8390_STOP, e8390_base+E8390_CMD); /* 0x61 */
1771 for(i = 0; i < 6; i++)
1773 outb_p(dev->dev_addr[i], e8390_base + EN1_PHYS_SHIFT(i));
1774 if(inb_p(e8390_base + EN1_PHYS_SHIFT(i))!=dev->dev_addr[i])
1775 printk(KERN_ERR "Hw. address read/write mismap %d\n",i);
1778 outb_p(ei_local->rx_start_page, e8390_base + EN1_CURPAG);
1779 outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD);
1781 netif_start_queue(dev);
1782 ei_local->tx1 = ei_local->tx2 = 0;
1783 ei_local->txing = 0;
1787 outb_p(0xff, e8390_base + EN0_ISR);
1788 outb_p(ENISR_ALL, e8390_base + EN0_IMR);
1789 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, e8390_base+E8390_CMD);
1790 outb_p(E8390_TXCONFIG | info->duplex_flag,
1791 e8390_base + EN0_TXCR); /* xmit on. */
1792 /* 3c503 TechMan says rxconfig only after the NIC is started. */
1793 outb_p(E8390_RXCONFIG | 0x40, e8390_base + EN0_RXCR); /* rx on, */
1794 do_set_multicast_list(dev); /* (re)load the mcast table */
1798 /* Trigger a transmit start, assuming the length is valid.
1799 Always called with the page lock held */
1801 static void NS8390_trigger_send(struct net_device *dev, unsigned int length,
1804 long e8390_base = dev->base_addr;
1805 struct ei_device *ei_local __attribute((unused)) = (struct ei_device *) netdev_priv(dev);
1807 if (inb_p(e8390_base) & E8390_TRANS)
1809 printk(KERN_WARNING "%s: trigger_send() called with the transmitter busy.\n",
1813 outb_p(length & 0xff, e8390_base + EN0_TCNTLO);
1814 outb_p(length >> 8, e8390_base + EN0_TCNTHI);
1815 outb_p(start_page, e8390_base + EN0_TPSR);
1816 outb_p(E8390_NODMA+E8390_TRANS+E8390_START, e8390_base+E8390_CMD);