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);
284 return pcmcia_request_io(link, &link->io);
288 static int axnet_configcheck(struct pcmcia_device *p_dev,
289 cistpl_cftable_entry_t *cfg,
290 cistpl_cftable_entry_t *dflt,
295 cistpl_io_t *io = &cfg->io;
297 if (cfg->index == 0 || cfg->io.nwin == 0)
300 p_dev->conf.ConfigIndex = 0x05;
301 /* For multifunction cards, by convention, we configure the
302 network function with window 0, and serial with window 1 */
304 i = (io->win[1].len > io->win[0].len);
305 p_dev->io.BasePort2 = io->win[1-i].base;
306 p_dev->io.NumPorts2 = io->win[1-i].len;
308 i = p_dev->io.NumPorts2 = 0;
310 p_dev->io.BasePort1 = io->win[i].base;
311 p_dev->io.NumPorts1 = io->win[i].len;
312 p_dev->io.IOAddrLines = io->flags & CISTPL_IO_LINES_MASK;
313 if (p_dev->io.NumPorts1 + p_dev->io.NumPorts2 >= 32)
314 return try_io_port(p_dev);
319 static int axnet_config(struct pcmcia_device *link)
321 struct net_device *dev = link->priv;
322 axnet_dev_t *info = PRIV(dev);
323 int i, j, last_ret, last_fn;
324 DECLARE_MAC_BUF(mac);
326 DEBUG(0, "axnet_config(0x%p)\n", link);
328 /* don't trust the CIS on this; Linksys got it wrong */
329 link->conf.Present = 0x63;
330 last_ret = pcmcia_loop_config(link, axnet_configcheck, NULL);
332 cs_error(link, RequestIO, last_ret);
336 CS_CHECK(RequestIRQ, pcmcia_request_irq(link, &link->irq));
338 if (link->io.NumPorts2 == 8) {
339 link->conf.Attributes |= CONF_ENABLE_SPKR;
340 link->conf.Status = CCSR_AUDIO_ENA;
343 CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link, &link->conf));
344 dev->irq = link->irq.AssignedIRQ;
345 dev->base_addr = link->io.BasePort1;
347 if (!get_prom(link)) {
348 printk(KERN_NOTICE "axnet_cs: this is not an AX88190 card!\n");
349 printk(KERN_NOTICE "axnet_cs: use pcnet_cs instead.\n");
353 ei_status.name = "AX88190";
354 ei_status.word16 = 1;
355 ei_status.tx_start_page = AXNET_START_PG;
356 ei_status.rx_start_page = AXNET_START_PG + TX_PAGES;
357 ei_status.stop_page = AXNET_STOP_PG;
358 ei_status.reset_8390 = &axnet_reset_8390;
359 ei_status.get_8390_hdr = &get_8390_hdr;
360 ei_status.block_input = &block_input;
361 ei_status.block_output = &block_output;
363 if (inb(dev->base_addr + AXNET_TEST) != 0)
364 info->flags |= IS_AX88790;
366 info->flags |= IS_AX88190;
368 if (info->flags & IS_AX88790)
369 outb(0x10, dev->base_addr + AXNET_GPIO); /* select Internal PHY */
371 for (i = 0; i < 32; i++) {
372 j = mdio_read(dev->base_addr + AXNET_MII_EEP, i, 1);
373 if ((j != 0) && (j != 0xffff)) break;
376 /* Maybe PHY is in power down mode. (PPD_SET = 1)
377 Bit 2 of CCSR is active low. */
379 conf_reg_t reg = { 0, CS_WRITE, CISREG_CCSR, 0x04 };
380 pcmcia_access_configuration_register(link, ®);
381 for (i = 0; i < 32; i++) {
382 j = mdio_read(dev->base_addr + AXNET_MII_EEP, i, 1);
383 if ((j != 0) && (j != 0xffff)) break;
387 info->phy_id = (i < 32) ? i : -1;
388 link->dev_node = &info->node;
389 SET_NETDEV_DEV(dev, &handle_to_dev(link));
391 if (register_netdev(dev) != 0) {
392 printk(KERN_NOTICE "axnet_cs: register_netdev() failed\n");
393 link->dev_node = NULL;
397 strcpy(info->node.dev_name, dev->name);
399 printk(KERN_INFO "%s: Asix AX88%d90: io %#3lx, irq %d, "
401 dev->name, ((info->flags & IS_AX88790) ? 7 : 1),
402 dev->base_addr, dev->irq,
403 print_mac(mac, dev->dev_addr));
404 if (info->phy_id != -1) {
405 DEBUG(0, " MII transceiver at index %d, status %x.\n", info->phy_id, j);
407 printk(KERN_NOTICE " No MII transceivers found!\n");
412 cs_error(link, last_fn, last_ret);
418 /*======================================================================
420 After a card is removed, axnet_release() will unregister the net
421 device, and release the PCMCIA configuration. If the device is
422 still open, this will be postponed until it is closed.
424 ======================================================================*/
426 static void axnet_release(struct pcmcia_device *link)
428 pcmcia_disable_device(link);
431 static int axnet_suspend(struct pcmcia_device *link)
433 struct net_device *dev = link->priv;
436 netif_device_detach(dev);
441 static int axnet_resume(struct pcmcia_device *link)
443 struct net_device *dev = link->priv;
446 axnet_reset_8390(dev);
447 AX88190_init(dev, 1);
448 netif_device_attach(dev);
455 /*======================================================================
457 MII interface support
459 ======================================================================*/
461 #define MDIO_SHIFT_CLK 0x01
462 #define MDIO_DATA_WRITE0 0x00
463 #define MDIO_DATA_WRITE1 0x08
464 #define MDIO_DATA_READ 0x04
465 #define MDIO_MASK 0x0f
466 #define MDIO_ENB_IN 0x02
468 static void mdio_sync(unsigned int addr)
471 for (bits = 0; bits < 32; bits++) {
472 outb_p(MDIO_DATA_WRITE1, addr);
473 outb_p(MDIO_DATA_WRITE1 | MDIO_SHIFT_CLK, addr);
477 static int mdio_read(unsigned int addr, int phy_id, int loc)
479 u_int cmd = (0xf6<<10)|(phy_id<<5)|loc;
483 for (i = 14; i >= 0; i--) {
484 int dat = (cmd&(1<<i)) ? MDIO_DATA_WRITE1 : MDIO_DATA_WRITE0;
486 outb_p(dat | MDIO_SHIFT_CLK, addr);
488 for (i = 19; i > 0; i--) {
489 outb_p(MDIO_ENB_IN, addr);
490 retval = (retval << 1) | ((inb_p(addr) & MDIO_DATA_READ) != 0);
491 outb_p(MDIO_ENB_IN | MDIO_SHIFT_CLK, addr);
493 return (retval>>1) & 0xffff;
496 static void mdio_write(unsigned int addr, int phy_id, int loc, int value)
498 u_int cmd = (0x05<<28)|(phy_id<<23)|(loc<<18)|(1<<17)|value;
502 for (i = 31; i >= 0; i--) {
503 int dat = (cmd&(1<<i)) ? MDIO_DATA_WRITE1 : MDIO_DATA_WRITE0;
505 outb_p(dat | MDIO_SHIFT_CLK, addr);
507 for (i = 1; i >= 0; i--) {
508 outb_p(MDIO_ENB_IN, addr);
509 outb_p(MDIO_ENB_IN | MDIO_SHIFT_CLK, addr);
513 /*====================================================================*/
515 static int axnet_open(struct net_device *dev)
518 axnet_dev_t *info = PRIV(dev);
519 struct pcmcia_device *link = info->p_dev;
520 unsigned int nic_base = dev->base_addr;
522 DEBUG(2, "axnet_open('%s')\n", dev->name);
524 if (!pcmcia_dev_present(link))
527 outb_p(0xFF, nic_base + EN0_ISR); /* Clear bogus intr. */
528 ret = request_irq(dev->irq, ei_irq_wrapper, IRQF_SHARED, "axnet_cs", dev);
534 info->link_status = 0x00;
535 init_timer(&info->watchdog);
536 info->watchdog.function = &ei_watchdog;
537 info->watchdog.data = (u_long)dev;
538 info->watchdog.expires = jiffies + HZ;
539 add_timer(&info->watchdog);
544 /*====================================================================*/
546 static int axnet_close(struct net_device *dev)
548 axnet_dev_t *info = PRIV(dev);
549 struct pcmcia_device *link = info->p_dev;
551 DEBUG(2, "axnet_close('%s')\n", dev->name);
554 free_irq(dev->irq, dev);
557 netif_stop_queue(dev);
558 del_timer_sync(&info->watchdog);
563 /*======================================================================
565 Hard reset the card. This used to pause for the same period that
566 a 8390 reset command required, but that shouldn't be necessary.
568 ======================================================================*/
570 static void axnet_reset_8390(struct net_device *dev)
572 unsigned int nic_base = dev->base_addr;
575 ei_status.txing = ei_status.dmaing = 0;
577 outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, nic_base + E8390_CMD);
579 outb(inb(nic_base + AXNET_RESET), nic_base + AXNET_RESET);
581 for (i = 0; i < 100; i++) {
582 if ((inb_p(nic_base+EN0_ISR) & ENISR_RESET) != 0)
586 outb_p(ENISR_RESET, nic_base + EN0_ISR); /* Ack intr. */
589 printk(KERN_ERR "%s: axnet_reset_8390() did not complete.\n",
592 } /* axnet_reset_8390 */
594 /*====================================================================*/
596 static irqreturn_t ei_irq_wrapper(int irq, void *dev_id)
598 struct net_device *dev = dev_id;
599 PRIV(dev)->stale = 0;
600 return ax_interrupt(irq, dev_id);
603 static void ei_watchdog(u_long arg)
605 struct net_device *dev = (struct net_device *)(arg);
606 axnet_dev_t *info = PRIV(dev);
607 unsigned int nic_base = dev->base_addr;
608 unsigned int mii_addr = nic_base + AXNET_MII_EEP;
611 if (!netif_device_present(dev)) goto reschedule;
613 /* Check for pending interrupt with expired latency timer: with
614 this, we can limp along even if the interrupt is blocked */
615 if (info->stale++ && (inb_p(nic_base + EN0_ISR) & ENISR_ALL)) {
616 if (!info->fast_poll)
617 printk(KERN_INFO "%s: interrupt(s) dropped!\n", dev->name);
618 ei_irq_wrapper(dev->irq, dev);
619 info->fast_poll = HZ;
621 if (info->fast_poll) {
623 info->watchdog.expires = jiffies + 1;
624 add_timer(&info->watchdog);
628 if (info->phy_id < 0)
630 link = mdio_read(mii_addr, info->phy_id, 1);
631 if (!link || (link == 0xffff)) {
632 printk(KERN_INFO "%s: MII is missing!\n", dev->name);
638 if (link != info->link_status) {
639 u_short p = mdio_read(mii_addr, info->phy_id, 5);
640 printk(KERN_INFO "%s: %s link beat\n", dev->name,
641 (link) ? "found" : "lost");
643 info->duplex_flag = (p & 0x0140) ? 0x80 : 0x00;
645 printk(KERN_INFO "%s: autonegotiation complete: "
646 "%sbaseT-%cD selected\n", dev->name,
647 ((p & 0x0180) ? "100" : "10"),
648 ((p & 0x0140) ? 'F' : 'H'));
650 printk(KERN_INFO "%s: link partner did not autonegotiate\n",
652 AX88190_init(dev, 1);
654 info->link_status = link;
658 info->watchdog.expires = jiffies + HZ;
659 add_timer(&info->watchdog);
662 static void netdev_get_drvinfo(struct net_device *dev,
663 struct ethtool_drvinfo *info)
665 strcpy(info->driver, "axnet_cs");
668 static const struct ethtool_ops netdev_ethtool_ops = {
669 .get_drvinfo = netdev_get_drvinfo,
672 /*====================================================================*/
674 static int axnet_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
676 axnet_dev_t *info = PRIV(dev);
677 u16 *data = (u16 *)&rq->ifr_ifru;
678 unsigned int mii_addr = dev->base_addr + AXNET_MII_EEP;
681 data[0] = info->phy_id;
682 case SIOCGMIIREG: /* Read MII PHY register. */
683 data[3] = mdio_read(mii_addr, data[0], data[1] & 0x1f);
685 case SIOCSMIIREG: /* Write MII PHY register. */
686 if (!capable(CAP_NET_ADMIN))
688 mdio_write(mii_addr, data[0], data[1] & 0x1f, data[2]);
694 /*====================================================================*/
696 static void get_8390_hdr(struct net_device *dev,
697 struct e8390_pkt_hdr *hdr,
700 unsigned int nic_base = dev->base_addr;
702 outb_p(0, nic_base + EN0_RSARLO); /* On page boundary */
703 outb_p(ring_page, nic_base + EN0_RSARHI);
704 outb_p(E8390_RREAD+E8390_START, nic_base + AXNET_CMD);
706 insw(nic_base + AXNET_DATAPORT, hdr,
707 sizeof(struct e8390_pkt_hdr)>>1);
708 /* Fix for big endian systems */
709 hdr->count = le16_to_cpu(hdr->count);
713 /*====================================================================*/
715 static void block_input(struct net_device *dev, int count,
716 struct sk_buff *skb, int ring_offset)
718 unsigned int nic_base = dev->base_addr;
719 int xfer_count = count;
720 char *buf = skb->data;
723 if ((ei_debug > 4) && (count != 4))
724 printk(KERN_DEBUG "%s: [bi=%d]\n", dev->name, count+4);
726 outb_p(ring_offset & 0xff, nic_base + EN0_RSARLO);
727 outb_p(ring_offset >> 8, nic_base + EN0_RSARHI);
728 outb_p(E8390_RREAD+E8390_START, nic_base + AXNET_CMD);
730 insw(nic_base + AXNET_DATAPORT,buf,count>>1);
732 buf[count-1] = inb(nic_base + AXNET_DATAPORT), xfer_count++;
736 /*====================================================================*/
738 static void block_output(struct net_device *dev, int count,
739 const u_char *buf, const int start_page)
741 unsigned int nic_base = dev->base_addr;
745 printk(KERN_DEBUG "%s: [bo=%d]\n", dev->name, count);
748 /* Round the count up for word writes. Do we need to do this?
749 What effect will an odd byte count have on the 8390?
750 I should check someday. */
754 outb_p(0x00, nic_base + EN0_RSARLO);
755 outb_p(start_page, nic_base + EN0_RSARHI);
756 outb_p(E8390_RWRITE+E8390_START, nic_base + AXNET_CMD);
757 outsw(nic_base + AXNET_DATAPORT, buf, count>>1);
760 static struct pcmcia_device_id axnet_ids[] = {
761 PCMCIA_PFC_DEVICE_MANF_CARD(0, 0x016c, 0x0081),
762 PCMCIA_DEVICE_MANF_CARD(0x018a, 0x0301),
763 PCMCIA_DEVICE_MANF_CARD(0x026f, 0x0301),
764 PCMCIA_DEVICE_MANF_CARD(0x026f, 0x0303),
765 PCMCIA_DEVICE_MANF_CARD(0x026f, 0x0309),
766 PCMCIA_DEVICE_MANF_CARD(0x0274, 0x1106),
767 PCMCIA_DEVICE_MANF_CARD(0x8a01, 0xc1ab),
768 PCMCIA_DEVICE_MANF_CARD(0x021b, 0x0202),
769 PCMCIA_DEVICE_MANF_CARD(0xffff, 0x1090),
770 PCMCIA_DEVICE_PROD_ID12("AmbiCom,Inc.", "Fast Ethernet PC Card(AMB8110)", 0x49b020a7, 0x119cc9fc),
771 PCMCIA_DEVICE_PROD_ID124("Fast Ethernet", "16-bit PC Card", "AX88190", 0xb4be14e3, 0x9a12eb6a, 0xab9be5ef),
772 PCMCIA_DEVICE_PROD_ID12("ASIX", "AX88190", 0x0959823b, 0xab9be5ef),
773 PCMCIA_DEVICE_PROD_ID12("Billionton", "LNA-100B", 0x552ab682, 0xbc3b87e1),
774 PCMCIA_DEVICE_PROD_ID12("CHEETAH ETHERCARD", "EN2228", 0x00fa7bc8, 0x00e990cc),
775 PCMCIA_DEVICE_PROD_ID12("CNet", "CNF301", 0xbc477dde, 0x78c5f40b),
776 PCMCIA_DEVICE_PROD_ID12("corega K.K.", "corega FEther PCC-TXD", 0x5261440f, 0x436768c5),
777 PCMCIA_DEVICE_PROD_ID12("corega K.K.", "corega FEtherII PCC-TXD", 0x5261440f, 0x730df72e),
778 PCMCIA_DEVICE_PROD_ID12("Dynalink", "L100C16", 0x55632fd5, 0x66bc2a90),
779 PCMCIA_DEVICE_PROD_ID12("Linksys", "EtherFast 10/100 PC Card (PCMPC100 V3)", 0x0733cc81, 0x232019a8),
780 PCMCIA_DEVICE_PROD_ID12("MELCO", "LPC3-TX", 0x481e0094, 0xf91af609),
781 PCMCIA_DEVICE_PROD_ID12("PCMCIA", "100BASE", 0x281f1c5d, 0x7c2add04),
782 PCMCIA_DEVICE_PROD_ID12("PCMCIA", "FastEtherCard", 0x281f1c5d, 0x7ef26116),
783 PCMCIA_DEVICE_PROD_ID12("PCMCIA", "FEP501", 0x281f1c5d, 0x2e272058),
784 PCMCIA_DEVICE_PROD_ID14("Network Everywhere", "AX88190", 0x820a67b6, 0xab9be5ef),
787 MODULE_DEVICE_TABLE(pcmcia, axnet_ids);
789 static struct pcmcia_driver axnet_cs_driver = {
790 .owner = THIS_MODULE,
794 .probe = axnet_probe,
795 .remove = axnet_detach,
796 .id_table = axnet_ids,
797 .suspend = axnet_suspend,
798 .resume = axnet_resume,
801 static int __init init_axnet_cs(void)
803 return pcmcia_register_driver(&axnet_cs_driver);
806 static void __exit exit_axnet_cs(void)
808 pcmcia_unregister_driver(&axnet_cs_driver);
811 module_init(init_axnet_cs);
812 module_exit(exit_axnet_cs);
814 /*====================================================================*/
816 /* 8390.c: A general NS8390 ethernet driver core for linux. */
818 Written 1992-94 by Donald Becker.
820 Copyright 1993 United States Government as represented by the
821 Director, National Security Agency.
823 This software may be used and distributed according to the terms
824 of the GNU General Public License, incorporated herein by reference.
826 The author may be reached as becker@scyld.com, or C/O
827 Scyld Computing Corporation
828 410 Severn Ave., Suite 210
831 This is the chip-specific code for many 8390-based ethernet adaptors.
832 This is not a complete driver, it must be combined with board-specific
833 code such as ne.c, wd.c, 3c503.c, etc.
835 Seeing how at least eight drivers use this code, (not counting the
836 PCMCIA ones either) it is easy to break some card by what seems like
837 a simple innocent change. Please contact me or Donald if you think
838 you have found something that needs changing. -- PG
842 Paul Gortmaker : remove set_bit lock, other cleanups.
843 Paul Gortmaker : add ei_get_8390_hdr() so we can pass skb's to
844 ei_block_input() for eth_io_copy_and_sum().
845 Paul Gortmaker : exchange static int ei_pingpong for a #define,
846 also add better Tx error handling.
847 Paul Gortmaker : rewrite Rx overrun handling as per NS specs.
848 Alexey Kuznetsov : use the 8390's six bit hash multicast filter.
849 Paul Gortmaker : tweak ANK's above multicast changes a bit.
850 Paul Gortmaker : update packet statistics for v2.1.x
851 Alan Cox : support arbitary stupid port mappings on the
852 68K Macintosh. Support >16bit I/O spaces
853 Paul Gortmaker : add kmod support for auto-loading of the 8390
854 module by all drivers that require it.
855 Alan Cox : Spinlocking work, added 'BUG_83C690'
856 Paul Gortmaker : Separate out Tx timeout code from Tx path.
859 The National Semiconductor LAN Databook, and the 3Com 3c503 databook.
863 static const char *version_8390 =
864 "8390.c:v1.10cvs 9/23/94 Donald Becker (becker@scyld.com)\n";
866 #include <linux/bitops.h>
868 #include <linux/fcntl.h>
869 #include <linux/in.h>
870 #include <linux/interrupt.h>
872 #include <linux/etherdevice.h>
876 /* These are the operational function interfaces to board-specific
878 void reset_8390(struct net_device *dev)
879 Resets the board associated with DEV, including a hardware reset of
880 the 8390. This is only called when there is a transmit timeout, and
881 it is always followed by 8390_init().
882 void block_output(struct net_device *dev, int count, const unsigned char *buf,
884 Write the COUNT bytes of BUF to the packet buffer at START_PAGE. The
885 "page" value uses the 8390's 256-byte pages.
886 void get_8390_hdr(struct net_device *dev, struct e8390_hdr *hdr, int ring_page)
887 Read the 4 byte, page aligned 8390 header. *If* there is a
888 subsequent read, it will be of the rest of the packet.
889 void block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset)
890 Read COUNT bytes from the packet buffer into the skb data area. Start
891 reading from RING_OFFSET, the address as the 8390 sees it. This will always
892 follow the read of the 8390 header.
894 #define ei_reset_8390 (ei_local->reset_8390)
895 #define ei_block_output (ei_local->block_output)
896 #define ei_block_input (ei_local->block_input)
897 #define ei_get_8390_hdr (ei_local->get_8390_hdr)
899 /* use 0 for production, 1 for verification, >2 for debug */
904 /* Index to functions. */
905 static void ei_tx_intr(struct net_device *dev);
906 static void ei_tx_err(struct net_device *dev);
907 static void ei_tx_timeout(struct net_device *dev);
908 static void ei_receive(struct net_device *dev);
909 static void ei_rx_overrun(struct net_device *dev);
911 /* Routines generic to NS8390-based boards. */
912 static void NS8390_trigger_send(struct net_device *dev, unsigned int length,
914 static void set_multicast_list(struct net_device *dev);
915 static void do_set_multicast_list(struct net_device *dev);
918 * SMP and the 8390 setup.
920 * The 8390 isnt exactly designed to be multithreaded on RX/TX. There is
921 * a page register that controls bank and packet buffer access. We guard
922 * this with ei_local->page_lock. Nobody should assume or set the page other
923 * than zero when the lock is not held. Lock holders must restore page 0
924 * before unlocking. Even pure readers must take the lock to protect in
927 * To make life difficult the chip can also be very slow. We therefore can't
928 * just use spinlocks. For the longer lockups we disable the irq the device
929 * sits on and hold the lock. We must hold the lock because there is a dual
930 * processor case other than interrupts (get stats/set multicast list in
931 * parallel with each other and transmit).
933 * Note: in theory we can just disable the irq on the card _but_ there is
934 * a latency on SMP irq delivery. So we can easily go "disable irq" "sync irqs"
935 * enter lock, take the queued irq. So we waddle instead of flying.
937 * Finally by special arrangement for the purpose of being generally
938 * annoying the transmit function is called bh atomic. That places
939 * restrictions on the user context callers as disable_irq won't save
944 * ax_open - Open/initialize the board.
945 * @dev: network device to initialize
947 * This routine goes all-out, setting everything
948 * up anew at each open, even though many of these registers should only
949 * need to be set once at boot.
951 static int ax_open(struct net_device *dev)
954 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
956 #ifdef HAVE_TX_TIMEOUT
957 /* The card I/O part of the driver (e.g. 3c503) can hook a Tx timeout
958 wrapper that does e.g. media check & then calls ei_tx_timeout. */
959 if (dev->tx_timeout == NULL)
960 dev->tx_timeout = ei_tx_timeout;
961 if (dev->watchdog_timeo <= 0)
962 dev->watchdog_timeo = TX_TIMEOUT;
966 * Grab the page lock so we own the register set, then call
970 spin_lock_irqsave(&ei_local->page_lock, flags);
971 AX88190_init(dev, 1);
972 /* Set the flag before we drop the lock, That way the IRQ arrives
973 after its set and we get no silly warnings */
974 netif_start_queue(dev);
975 spin_unlock_irqrestore(&ei_local->page_lock, flags);
976 ei_local->irqlock = 0;
980 #define dev_lock(dev) (((struct ei_device *)netdev_priv(dev))->page_lock)
983 * ax_close - shut down network device
984 * @dev: network device to close
986 * Opposite of ax_open(). Only used when "ifconfig <devname> down" is done.
988 static int ax_close(struct net_device *dev)
993 * Hold the page lock during close
996 spin_lock_irqsave(&dev_lock(dev), flags);
997 AX88190_init(dev, 0);
998 spin_unlock_irqrestore(&dev_lock(dev), flags);
999 netif_stop_queue(dev);
1004 * ei_tx_timeout - handle transmit time out condition
1005 * @dev: network device which has apparently fallen asleep
1007 * Called by kernel when device never acknowledges a transmit has
1008 * completed (or failed) - i.e. never posted a Tx related interrupt.
1011 static void ei_tx_timeout(struct net_device *dev)
1013 long e8390_base = dev->base_addr;
1014 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1015 int txsr, isr, tickssofar = jiffies - dev->trans_start;
1016 unsigned long flags;
1018 dev->stats.tx_errors++;
1020 spin_lock_irqsave(&ei_local->page_lock, flags);
1021 txsr = inb(e8390_base+EN0_TSR);
1022 isr = inb(e8390_base+EN0_ISR);
1023 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1025 printk(KERN_DEBUG "%s: Tx timed out, %s TSR=%#2x, ISR=%#2x, t=%d.\n",
1026 dev->name, (txsr & ENTSR_ABT) ? "excess collisions." :
1027 (isr) ? "lost interrupt?" : "cable problem?", txsr, isr, tickssofar);
1029 if (!isr && !dev->stats.tx_packets)
1031 /* The 8390 probably hasn't gotten on the cable yet. */
1032 ei_local->interface_num ^= 1; /* Try a different xcvr. */
1035 /* Ugly but a reset can be slow, yet must be protected */
1037 spin_lock_irqsave(&ei_local->page_lock, flags);
1039 /* Try to restart the card. Perhaps the user has fixed something. */
1041 AX88190_init(dev, 1);
1043 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1044 netif_wake_queue(dev);
1048 * ei_start_xmit - begin packet transmission
1049 * @skb: packet to be sent
1050 * @dev: network device to which packet is sent
1052 * Sends a packet to an 8390 network device.
1055 static int ei_start_xmit(struct sk_buff *skb, struct net_device *dev)
1057 long e8390_base = dev->base_addr;
1058 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1059 int length, send_length, output_page;
1060 unsigned long flags;
1061 u8 packet[ETH_ZLEN];
1063 netif_stop_queue(dev);
1067 /* Mask interrupts from the ethercard.
1068 SMP: We have to grab the lock here otherwise the IRQ handler
1069 on another CPU can flip window and race the IRQ mask set. We end
1070 up trashing the mcast filter not disabling irqs if we don't lock */
1072 spin_lock_irqsave(&ei_local->page_lock, flags);
1073 outb_p(0x00, e8390_base + EN0_IMR);
1074 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1077 * Slow phase with lock held.
1080 spin_lock_irqsave(&ei_local->page_lock, flags);
1082 ei_local->irqlock = 1;
1084 send_length = max(length, ETH_ZLEN);
1087 * We have two Tx slots available for use. Find the first free
1088 * slot, and then perform some sanity checks. With two Tx bufs,
1089 * you get very close to transmitting back-to-back packets. With
1090 * only one Tx buf, the transmitter sits idle while you reload the
1091 * card, leaving a substantial gap between each transmitted packet.
1094 if (ei_local->tx1 == 0)
1096 output_page = ei_local->tx_start_page;
1097 ei_local->tx1 = send_length;
1098 if (ei_debug && ei_local->tx2 > 0)
1099 printk(KERN_DEBUG "%s: idle transmitter tx2=%d, lasttx=%d, txing=%d.\n",
1100 dev->name, ei_local->tx2, ei_local->lasttx, ei_local->txing);
1102 else if (ei_local->tx2 == 0)
1104 output_page = ei_local->tx_start_page + TX_PAGES/2;
1105 ei_local->tx2 = send_length;
1106 if (ei_debug && ei_local->tx1 > 0)
1107 printk(KERN_DEBUG "%s: idle transmitter, tx1=%d, lasttx=%d, txing=%d.\n",
1108 dev->name, ei_local->tx1, ei_local->lasttx, ei_local->txing);
1111 { /* We should never get here. */
1113 printk(KERN_DEBUG "%s: No Tx buffers free! tx1=%d tx2=%d last=%d\n",
1114 dev->name, ei_local->tx1, ei_local->tx2, ei_local->lasttx);
1115 ei_local->irqlock = 0;
1116 netif_stop_queue(dev);
1117 outb_p(ENISR_ALL, e8390_base + EN0_IMR);
1118 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1119 dev->stats.tx_errors++;
1124 * Okay, now upload the packet and trigger a send if the transmitter
1125 * isn't already sending. If it is busy, the interrupt handler will
1126 * trigger the send later, upon receiving a Tx done interrupt.
1129 if (length == skb->len)
1130 ei_block_output(dev, length, skb->data, output_page);
1132 memset(packet, 0, ETH_ZLEN);
1133 skb_copy_from_linear_data(skb, packet, skb->len);
1134 ei_block_output(dev, length, packet, output_page);
1137 if (! ei_local->txing)
1139 ei_local->txing = 1;
1140 NS8390_trigger_send(dev, send_length, output_page);
1141 dev->trans_start = jiffies;
1142 if (output_page == ei_local->tx_start_page)
1145 ei_local->lasttx = -1;
1150 ei_local->lasttx = -2;
1153 else ei_local->txqueue++;
1155 if (ei_local->tx1 && ei_local->tx2)
1156 netif_stop_queue(dev);
1158 netif_start_queue(dev);
1160 /* Turn 8390 interrupts back on. */
1161 ei_local->irqlock = 0;
1162 outb_p(ENISR_ALL, e8390_base + EN0_IMR);
1164 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1166 dev_kfree_skb (skb);
1167 dev->stats.tx_bytes += send_length;
1173 * ax_interrupt - handle the interrupts from an 8390
1174 * @irq: interrupt number
1175 * @dev_id: a pointer to the net_device
1178 * Handle the ether interface interrupts. We pull packets from
1179 * the 8390 via the card specific functions and fire them at the networking
1180 * stack. We also handle transmit completions and wake the transmit path if
1181 * necessary. We also update the counters and do other housekeeping as
1185 static irqreturn_t ax_interrupt(int irq, void *dev_id)
1187 struct net_device *dev = dev_id;
1189 int interrupts, nr_serviced = 0, i;
1190 struct ei_device *ei_local;
1193 e8390_base = dev->base_addr;
1194 ei_local = netdev_priv(dev);
1197 * Protect the irq test too.
1200 spin_lock(&ei_local->page_lock);
1202 if (ei_local->irqlock)
1204 #if 1 /* This might just be an interrupt for a PCI device sharing this line */
1205 /* The "irqlock" check is only for testing. */
1206 printk(ei_local->irqlock
1207 ? "%s: Interrupted while interrupts are masked! isr=%#2x imr=%#2x.\n"
1208 : "%s: Reentering the interrupt handler! isr=%#2x imr=%#2x.\n",
1209 dev->name, inb_p(e8390_base + EN0_ISR),
1210 inb_p(e8390_base + EN0_IMR));
1212 spin_unlock(&ei_local->page_lock);
1217 printk(KERN_DEBUG "%s: interrupt(isr=%#2.2x).\n", dev->name,
1218 inb_p(e8390_base + EN0_ISR));
1220 outb_p(0x00, e8390_base + EN0_ISR);
1221 ei_local->irqlock = 1;
1223 /* !!Assumption!! -- we stay in page 0. Don't break this. */
1224 while ((interrupts = inb_p(e8390_base + EN0_ISR)) != 0
1225 && ++nr_serviced < MAX_SERVICE)
1227 if (!netif_running(dev) || (interrupts == 0xff)) {
1229 printk(KERN_WARNING "%s: interrupt from stopped card\n", dev->name);
1230 outb_p(interrupts, e8390_base + EN0_ISR);
1236 /* AX88190 bug fix. */
1237 outb_p(interrupts, e8390_base + EN0_ISR);
1238 for (i = 0; i < 10; i++) {
1239 if (!(inb(e8390_base + EN0_ISR) & interrupts))
1241 outb_p(0, e8390_base + EN0_ISR);
1242 outb_p(interrupts, e8390_base + EN0_ISR);
1244 if (interrupts & ENISR_OVER)
1246 else if (interrupts & (ENISR_RX+ENISR_RX_ERR))
1248 /* Got a good (?) packet. */
1251 /* Push the next to-transmit packet through. */
1252 if (interrupts & ENISR_TX)
1254 else if (interrupts & ENISR_TX_ERR)
1257 if (interrupts & ENISR_COUNTERS)
1259 dev->stats.rx_frame_errors += inb_p(e8390_base + EN0_COUNTER0);
1260 dev->stats.rx_crc_errors += inb_p(e8390_base + EN0_COUNTER1);
1261 dev->stats.rx_missed_errors+= inb_p(e8390_base + EN0_COUNTER2);
1265 if (interrupts && ei_debug > 3)
1268 if (nr_serviced >= MAX_SERVICE)
1270 /* 0xFF is valid for a card removal */
1271 if(interrupts!=0xFF)
1272 printk(KERN_WARNING "%s: Too much work at interrupt, status %#2.2x\n",
1273 dev->name, interrupts);
1274 outb_p(ENISR_ALL, e8390_base + EN0_ISR); /* Ack. most intrs. */
1276 printk(KERN_WARNING "%s: unknown interrupt %#2x\n", dev->name, interrupts);
1277 outb_p(0xff, e8390_base + EN0_ISR); /* Ack. all intrs. */
1281 /* Turn 8390 interrupts back on. */
1282 ei_local->irqlock = 0;
1283 outb_p(ENISR_ALL, e8390_base + EN0_IMR);
1285 spin_unlock(&ei_local->page_lock);
1286 return IRQ_RETVAL(handled);
1290 * ei_tx_err - handle transmitter error
1291 * @dev: network device which threw the exception
1293 * A transmitter error has happened. Most likely excess collisions (which
1294 * is a fairly normal condition). If the error is one where the Tx will
1295 * have been aborted, we try and send another one right away, instead of
1296 * letting the failed packet sit and collect dust in the Tx buffer. This
1297 * is a much better solution as it avoids kernel based Tx timeouts, and
1298 * an unnecessary card reset.
1300 * Called with lock held.
1303 static void ei_tx_err(struct net_device *dev)
1305 long e8390_base = dev->base_addr;
1306 unsigned char txsr = inb_p(e8390_base+EN0_TSR);
1307 unsigned char tx_was_aborted = txsr & (ENTSR_ABT+ENTSR_FU);
1309 #ifdef VERBOSE_ERROR_DUMP
1310 printk(KERN_DEBUG "%s: transmitter error (%#2x): ", dev->name, txsr);
1311 if (txsr & ENTSR_ABT)
1312 printk("excess-collisions ");
1313 if (txsr & ENTSR_ND)
1314 printk("non-deferral ");
1315 if (txsr & ENTSR_CRS)
1316 printk("lost-carrier ");
1317 if (txsr & ENTSR_FU)
1318 printk("FIFO-underrun ");
1319 if (txsr & ENTSR_CDH)
1320 printk("lost-heartbeat ");
1328 dev->stats.tx_errors++;
1329 if (txsr & ENTSR_CRS) dev->stats.tx_carrier_errors++;
1330 if (txsr & ENTSR_CDH) dev->stats.tx_heartbeat_errors++;
1331 if (txsr & ENTSR_OWC) dev->stats.tx_window_errors++;
1336 * ei_tx_intr - transmit interrupt handler
1337 * @dev: network device for which tx intr is handled
1339 * We have finished a transmit: check for errors and then trigger the next
1340 * packet to be sent. Called with lock held.
1343 static void ei_tx_intr(struct net_device *dev)
1345 long e8390_base = dev->base_addr;
1346 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1347 int status = inb(e8390_base + EN0_TSR);
1350 * There are two Tx buffers, see which one finished, and trigger
1351 * the send of another one if it exists.
1353 ei_local->txqueue--;
1355 if (ei_local->tx1 < 0)
1357 if (ei_local->lasttx != 1 && ei_local->lasttx != -1)
1358 printk(KERN_ERR "%s: bogus last_tx_buffer %d, tx1=%d.\n",
1359 ei_local->name, ei_local->lasttx, ei_local->tx1);
1361 if (ei_local->tx2 > 0)
1363 ei_local->txing = 1;
1364 NS8390_trigger_send(dev, ei_local->tx2, ei_local->tx_start_page + 6);
1365 dev->trans_start = jiffies;
1367 ei_local->lasttx = 2;
1369 else ei_local->lasttx = 20, ei_local->txing = 0;
1371 else if (ei_local->tx2 < 0)
1373 if (ei_local->lasttx != 2 && ei_local->lasttx != -2)
1374 printk("%s: bogus last_tx_buffer %d, tx2=%d.\n",
1375 ei_local->name, ei_local->lasttx, ei_local->tx2);
1377 if (ei_local->tx1 > 0)
1379 ei_local->txing = 1;
1380 NS8390_trigger_send(dev, ei_local->tx1, ei_local->tx_start_page);
1381 dev->trans_start = jiffies;
1383 ei_local->lasttx = 1;
1386 ei_local->lasttx = 10, ei_local->txing = 0;
1388 // else printk(KERN_WARNING "%s: unexpected TX-done interrupt, lasttx=%d.\n",
1389 // dev->name, ei_local->lasttx);
1391 /* Minimize Tx latency: update the statistics after we restart TXing. */
1392 if (status & ENTSR_COL)
1393 dev->stats.collisions++;
1394 if (status & ENTSR_PTX)
1395 dev->stats.tx_packets++;
1398 dev->stats.tx_errors++;
1399 if (status & ENTSR_ABT)
1401 dev->stats.tx_aborted_errors++;
1402 dev->stats.collisions += 16;
1404 if (status & ENTSR_CRS)
1405 dev->stats.tx_carrier_errors++;
1406 if (status & ENTSR_FU)
1407 dev->stats.tx_fifo_errors++;
1408 if (status & ENTSR_CDH)
1409 dev->stats.tx_heartbeat_errors++;
1410 if (status & ENTSR_OWC)
1411 dev->stats.tx_window_errors++;
1413 netif_wake_queue(dev);
1417 * ei_receive - receive some packets
1418 * @dev: network device with which receive will be run
1420 * We have a good packet(s), get it/them out of the buffers.
1421 * Called with lock held.
1424 static void ei_receive(struct net_device *dev)
1426 long e8390_base = dev->base_addr;
1427 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1428 unsigned char rxing_page, this_frame, next_frame;
1429 unsigned short current_offset;
1430 int rx_pkt_count = 0;
1431 struct e8390_pkt_hdr rx_frame;
1433 while (++rx_pkt_count < 10)
1435 int pkt_len, pkt_stat;
1437 /* Get the rx page (incoming packet pointer). */
1438 rxing_page = inb_p(e8390_base + EN1_CURPAG -1);
1440 /* Remove one frame from the ring. Boundary is always a page behind. */
1441 this_frame = inb_p(e8390_base + EN0_BOUNDARY) + 1;
1442 if (this_frame >= ei_local->stop_page)
1443 this_frame = ei_local->rx_start_page;
1445 /* Someday we'll omit the previous, iff we never get this message.
1446 (There is at least one clone claimed to have a problem.)
1448 Keep quiet if it looks like a card removal. One problem here
1449 is that some clones crash in roughly the same way.
1451 if (ei_debug > 0 && this_frame != ei_local->current_page && (this_frame!=0x0 || rxing_page!=0xFF))
1452 printk(KERN_ERR "%s: mismatched read page pointers %2x vs %2x.\n",
1453 dev->name, this_frame, ei_local->current_page);
1455 if (this_frame == rxing_page) /* Read all the frames? */
1456 break; /* Done for now */
1458 current_offset = this_frame << 8;
1459 ei_get_8390_hdr(dev, &rx_frame, this_frame);
1461 pkt_len = rx_frame.count - sizeof(struct e8390_pkt_hdr);
1462 pkt_stat = rx_frame.status;
1464 next_frame = this_frame + 1 + ((pkt_len+4)>>8);
1466 if (pkt_len < 60 || pkt_len > 1518)
1469 printk(KERN_DEBUG "%s: bogus packet size: %d, status=%#2x nxpg=%#2x.\n",
1470 dev->name, rx_frame.count, rx_frame.status,
1472 dev->stats.rx_errors++;
1473 dev->stats.rx_length_errors++;
1475 else if ((pkt_stat & 0x0F) == ENRSR_RXOK)
1477 struct sk_buff *skb;
1479 skb = dev_alloc_skb(pkt_len+2);
1483 printk(KERN_DEBUG "%s: Couldn't allocate a sk_buff of size %d.\n",
1484 dev->name, pkt_len);
1485 dev->stats.rx_dropped++;
1490 skb_reserve(skb,2); /* IP headers on 16 byte boundaries */
1491 skb_put(skb, pkt_len); /* Make room */
1492 ei_block_input(dev, pkt_len, skb, current_offset + sizeof(rx_frame));
1493 skb->protocol=eth_type_trans(skb,dev);
1495 dev->last_rx = jiffies;
1496 dev->stats.rx_packets++;
1497 dev->stats.rx_bytes += pkt_len;
1498 if (pkt_stat & ENRSR_PHY)
1499 dev->stats.multicast++;
1505 printk(KERN_DEBUG "%s: bogus packet: status=%#2x nxpg=%#2x size=%d\n",
1506 dev->name, rx_frame.status, rx_frame.next,
1508 dev->stats.rx_errors++;
1509 /* NB: The NIC counts CRC, frame and missed errors. */
1510 if (pkt_stat & ENRSR_FO)
1511 dev->stats.rx_fifo_errors++;
1513 next_frame = rx_frame.next;
1515 /* This _should_ never happen: it's here for avoiding bad clones. */
1516 if (next_frame >= ei_local->stop_page) {
1517 printk("%s: next frame inconsistency, %#2x\n", dev->name,
1519 next_frame = ei_local->rx_start_page;
1521 ei_local->current_page = next_frame;
1522 outb_p(next_frame-1, e8390_base+EN0_BOUNDARY);
1529 * ei_rx_overrun - handle receiver overrun
1530 * @dev: network device which threw exception
1532 * We have a receiver overrun: we have to kick the 8390 to get it started
1533 * again. Problem is that you have to kick it exactly as NS prescribes in
1534 * the updated datasheets, or "the NIC may act in an unpredictable manner."
1535 * This includes causing "the NIC to defer indefinitely when it is stopped
1536 * on a busy network." Ugh.
1537 * Called with lock held. Don't call this with the interrupts off or your
1538 * computer will hate you - it takes 10ms or so.
1541 static void ei_rx_overrun(struct net_device *dev)
1543 axnet_dev_t *info = PRIV(dev);
1544 long e8390_base = dev->base_addr;
1545 unsigned char was_txing, must_resend = 0;
1548 * Record whether a Tx was in progress and then issue the
1551 was_txing = inb_p(e8390_base+E8390_CMD) & E8390_TRANS;
1552 outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD);
1555 printk(KERN_DEBUG "%s: Receiver overrun.\n", dev->name);
1556 dev->stats.rx_over_errors++;
1559 * Wait a full Tx time (1.2ms) + some guard time, NS says 1.6ms total.
1560 * Early datasheets said to poll the reset bit, but now they say that
1561 * it "is not a reliable indicator and subsequently should be ignored."
1562 * We wait at least 10ms.
1568 * Reset RBCR[01] back to zero as per magic incantation.
1570 outb_p(0x00, e8390_base+EN0_RCNTLO);
1571 outb_p(0x00, e8390_base+EN0_RCNTHI);
1574 * See if any Tx was interrupted or not. According to NS, this
1575 * step is vital, and skipping it will cause no end of havoc.
1580 unsigned char tx_completed = inb_p(e8390_base+EN0_ISR) & (ENISR_TX+ENISR_TX_ERR);
1586 * Have to enter loopback mode and then restart the NIC before
1587 * you are allowed to slurp packets up off the ring.
1589 outb_p(E8390_TXOFF, e8390_base + EN0_TXCR);
1590 outb_p(E8390_NODMA + E8390_PAGE0 + E8390_START, e8390_base + E8390_CMD);
1593 * Clear the Rx ring of all the debris, and ack the interrupt.
1598 * Leave loopback mode, and resend any packet that got stopped.
1600 outb_p(E8390_TXCONFIG | info->duplex_flag, e8390_base + EN0_TXCR);
1602 outb_p(E8390_NODMA + E8390_PAGE0 + E8390_START + E8390_TRANS, e8390_base + E8390_CMD);
1606 * Collect the stats. This is called unlocked and from several contexts.
1609 static struct net_device_stats *get_stats(struct net_device *dev)
1611 long ioaddr = dev->base_addr;
1612 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1613 unsigned long flags;
1615 /* If the card is stopped, just return the present stats. */
1616 if (!netif_running(dev))
1619 spin_lock_irqsave(&ei_local->page_lock,flags);
1620 /* Read the counter registers, assuming we are in page 0. */
1621 dev->stats.rx_frame_errors += inb_p(ioaddr + EN0_COUNTER0);
1622 dev->stats.rx_crc_errors += inb_p(ioaddr + EN0_COUNTER1);
1623 dev->stats.rx_missed_errors+= inb_p(ioaddr + EN0_COUNTER2);
1624 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1630 * Form the 64 bit 8390 multicast table from the linked list of addresses
1631 * associated with this dev structure.
1634 static inline void make_mc_bits(u8 *bits, struct net_device *dev)
1636 struct dev_mc_list *dmi;
1639 for (dmi=dev->mc_list; dmi; dmi=dmi->next) {
1641 crc = ether_crc(ETH_ALEN, dmi->dmi_addr);
1643 * The 8390 uses the 6 most significant bits of the
1644 * CRC to index the multicast table.
1646 bits[crc>>29] |= (1<<((crc>>26)&7));
1651 * do_set_multicast_list - set/clear multicast filter
1652 * @dev: net device for which multicast filter is adjusted
1654 * Set or clear the multicast filter for this adaptor.
1655 * Must be called with lock held.
1658 static void do_set_multicast_list(struct net_device *dev)
1660 long e8390_base = dev->base_addr;
1662 struct ei_device *ei_local = (struct ei_device*)netdev_priv(dev);
1664 if (!(dev->flags&(IFF_PROMISC|IFF_ALLMULTI))) {
1665 memset(ei_local->mcfilter, 0, 8);
1667 make_mc_bits(ei_local->mcfilter, dev);
1669 /* set to accept-all */
1670 memset(ei_local->mcfilter, 0xFF, 8);
1673 outb_p(E8390_NODMA + E8390_PAGE1, e8390_base + E8390_CMD);
1674 for(i = 0; i < 8; i++)
1676 outb_p(ei_local->mcfilter[i], e8390_base + EN1_MULT_SHIFT(i));
1678 outb_p(E8390_NODMA + E8390_PAGE0, e8390_base + E8390_CMD);
1680 if(dev->flags&IFF_PROMISC)
1681 outb_p(E8390_RXCONFIG | 0x58, e8390_base + EN0_RXCR);
1682 else if(dev->flags&IFF_ALLMULTI || dev->mc_list)
1683 outb_p(E8390_RXCONFIG | 0x48, e8390_base + EN0_RXCR);
1685 outb_p(E8390_RXCONFIG | 0x40, e8390_base + EN0_RXCR);
1687 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, e8390_base+E8390_CMD);
1691 * Called without lock held. This is invoked from user context and may
1692 * be parallel to just about everything else. Its also fairly quick and
1693 * not called too often. Must protect against both bh and irq users
1696 static void set_multicast_list(struct net_device *dev)
1698 unsigned long flags;
1700 spin_lock_irqsave(&dev_lock(dev), flags);
1701 do_set_multicast_list(dev);
1702 spin_unlock_irqrestore(&dev_lock(dev), flags);
1706 * axdev_setup - init rest of 8390 device struct
1707 * @dev: network device structure to init
1709 * Initialize the rest of the 8390 device structure. Do NOT __init
1710 * this, as it is used by 8390 based modular drivers too.
1713 static void axdev_setup(struct net_device *dev)
1715 struct ei_device *ei_local;
1717 printk(version_8390);
1719 ei_local = (struct ei_device *)netdev_priv(dev);
1720 spin_lock_init(&ei_local->page_lock);
1722 dev->hard_start_xmit = &ei_start_xmit;
1723 dev->get_stats = get_stats;
1724 dev->set_multicast_list = &set_multicast_list;
1729 /* This page of functions should be 8390 generic */
1730 /* Follow National Semi's recommendations for initializing the "NIC". */
1733 * AX88190_init - initialize 8390 hardware
1734 * @dev: network device to initialize
1735 * @startp: boolean. non-zero value to initiate chip processing
1737 * Must be called with lock held.
1740 static void AX88190_init(struct net_device *dev, int startp)
1742 axnet_dev_t *info = PRIV(dev);
1743 long e8390_base = dev->base_addr;
1744 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1746 int endcfg = ei_local->word16 ? (0x48 | ENDCFG_WTS) : 0x48;
1748 if(sizeof(struct e8390_pkt_hdr)!=4)
1749 panic("8390.c: header struct mispacked\n");
1750 /* Follow National Semi's recommendations for initing the DP83902. */
1751 outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD); /* 0x21 */
1752 outb_p(endcfg, e8390_base + EN0_DCFG); /* 0x48 or 0x49 */
1753 /* Clear the remote byte count registers. */
1754 outb_p(0x00, e8390_base + EN0_RCNTLO);
1755 outb_p(0x00, e8390_base + EN0_RCNTHI);
1756 /* Set to monitor and loopback mode -- this is vital!. */
1757 outb_p(E8390_RXOFF|0x40, e8390_base + EN0_RXCR); /* 0x60 */
1758 outb_p(E8390_TXOFF, e8390_base + EN0_TXCR); /* 0x02 */
1759 /* Set the transmit page and receive ring. */
1760 outb_p(ei_local->tx_start_page, e8390_base + EN0_TPSR);
1761 ei_local->tx1 = ei_local->tx2 = 0;
1762 outb_p(ei_local->rx_start_page, e8390_base + EN0_STARTPG);
1763 outb_p(ei_local->stop_page-1, e8390_base + EN0_BOUNDARY); /* 3c503 says 0x3f,NS0x26*/
1764 ei_local->current_page = ei_local->rx_start_page; /* assert boundary+1 */
1765 outb_p(ei_local->stop_page, e8390_base + EN0_STOPPG);
1766 /* Clear the pending interrupts and mask. */
1767 outb_p(0xFF, e8390_base + EN0_ISR);
1768 outb_p(0x00, e8390_base + EN0_IMR);
1770 /* Copy the station address into the DS8390 registers. */
1772 outb_p(E8390_NODMA + E8390_PAGE1 + E8390_STOP, e8390_base+E8390_CMD); /* 0x61 */
1773 for(i = 0; i < 6; i++)
1775 outb_p(dev->dev_addr[i], e8390_base + EN1_PHYS_SHIFT(i));
1776 if(inb_p(e8390_base + EN1_PHYS_SHIFT(i))!=dev->dev_addr[i])
1777 printk(KERN_ERR "Hw. address read/write mismap %d\n",i);
1780 outb_p(ei_local->rx_start_page, e8390_base + EN1_CURPAG);
1781 outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD);
1783 netif_start_queue(dev);
1784 ei_local->tx1 = ei_local->tx2 = 0;
1785 ei_local->txing = 0;
1789 outb_p(0xff, e8390_base + EN0_ISR);
1790 outb_p(ENISR_ALL, e8390_base + EN0_IMR);
1791 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, e8390_base+E8390_CMD);
1792 outb_p(E8390_TXCONFIG | info->duplex_flag,
1793 e8390_base + EN0_TXCR); /* xmit on. */
1794 /* 3c503 TechMan says rxconfig only after the NIC is started. */
1795 outb_p(E8390_RXCONFIG | 0x40, e8390_base + EN0_RXCR); /* rx on, */
1796 do_set_multicast_list(dev); /* (re)load the mcast table */
1800 /* Trigger a transmit start, assuming the length is valid.
1801 Always called with the page lock held */
1803 static void NS8390_trigger_send(struct net_device *dev, unsigned int length,
1806 long e8390_base = dev->base_addr;
1807 struct ei_device *ei_local __attribute((unused)) = (struct ei_device *) netdev_priv(dev);
1809 if (inb_p(e8390_base) & E8390_TRANS)
1811 printk(KERN_WARNING "%s: trigger_send() called with the transmitter busy.\n",
1815 outb_p(length & 0xff, e8390_base + EN0_TCNTLO);
1816 outb_p(length >> 8, e8390_base + EN0_TCNTHI);
1817 outb_p(start_page, e8390_base + EN0_TPSR);
1818 outb_p(E8390_NODMA+E8390_TRANS+E8390_START, e8390_base+E8390_CMD);