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, struct pt_regs *regs);
96 static void ei_watchdog(u_long arg);
97 static void axnet_reset_8390(struct net_device *dev);
99 static int mdio_read(kio_addr_t addr, int phy_id, int loc);
100 static void mdio_write(kio_addr_t 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, struct pt_regs *regs);
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_EXCLUSIVE;
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 kio_addr_t 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 < sizeof(program_seq)/sizeof(program_seq[0]); 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_config(struct pcmcia_device *link)
289 struct net_device *dev = link->priv;
290 axnet_dev_t *info = PRIV(dev);
293 int i, j, last_ret, last_fn;
296 DEBUG(0, "axnet_config(0x%p)\n", link);
298 tuple.Attributes = 0;
299 tuple.TupleData = (cisdata_t *)buf;
300 tuple.TupleDataMax = sizeof(buf);
301 tuple.TupleOffset = 0;
302 tuple.DesiredTuple = CISTPL_CONFIG;
303 CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(link, &tuple));
304 CS_CHECK(GetTupleData, pcmcia_get_tuple_data(link, &tuple));
305 CS_CHECK(ParseTuple, pcmcia_parse_tuple(link, &tuple, &parse));
306 link->conf.ConfigBase = parse.config.base;
307 /* don't trust the CIS on this; Linksys got it wrong */
308 link->conf.Present = 0x63;
310 tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
311 tuple.Attributes = 0;
312 CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(link, &tuple));
313 while (last_ret == CS_SUCCESS) {
314 cistpl_cftable_entry_t *cfg = &(parse.cftable_entry);
315 cistpl_io_t *io = &(parse.cftable_entry.io);
317 if (pcmcia_get_tuple_data(link, &tuple) != 0 ||
318 pcmcia_parse_tuple(link, &tuple, &parse) != 0 ||
319 cfg->index == 0 || cfg->io.nwin == 0)
322 link->conf.ConfigIndex = 0x05;
323 /* For multifunction cards, by convention, we configure the
324 network function with window 0, and serial with window 1 */
326 i = (io->win[1].len > io->win[0].len);
327 link->io.BasePort2 = io->win[1-i].base;
328 link->io.NumPorts2 = io->win[1-i].len;
330 i = link->io.NumPorts2 = 0;
332 link->io.BasePort1 = io->win[i].base;
333 link->io.NumPorts1 = io->win[i].len;
334 link->io.IOAddrLines = io->flags & CISTPL_IO_LINES_MASK;
335 if (link->io.NumPorts1 + link->io.NumPorts2 >= 32) {
336 last_ret = try_io_port(link);
337 if (last_ret == CS_SUCCESS) break;
340 last_ret = pcmcia_get_next_tuple(link, &tuple);
342 if (last_ret != CS_SUCCESS) {
343 cs_error(link, RequestIO, last_ret);
347 CS_CHECK(RequestIRQ, pcmcia_request_irq(link, &link->irq));
349 if (link->io.NumPorts2 == 8) {
350 link->conf.Attributes |= CONF_ENABLE_SPKR;
351 link->conf.Status = CCSR_AUDIO_ENA;
354 CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link, &link->conf));
355 dev->irq = link->irq.AssignedIRQ;
356 dev->base_addr = link->io.BasePort1;
358 if (!get_prom(link)) {
359 printk(KERN_NOTICE "axnet_cs: this is not an AX88190 card!\n");
360 printk(KERN_NOTICE "axnet_cs: use pcnet_cs instead.\n");
364 ei_status.name = "AX88190";
365 ei_status.word16 = 1;
366 ei_status.tx_start_page = AXNET_START_PG;
367 ei_status.rx_start_page = AXNET_START_PG + TX_PAGES;
368 ei_status.stop_page = AXNET_STOP_PG;
369 ei_status.reset_8390 = &axnet_reset_8390;
370 ei_status.get_8390_hdr = &get_8390_hdr;
371 ei_status.block_input = &block_input;
372 ei_status.block_output = &block_output;
374 if (inb(dev->base_addr + AXNET_TEST) != 0)
375 info->flags |= IS_AX88790;
377 info->flags |= IS_AX88190;
379 if (info->flags & IS_AX88790)
380 outb(0x10, dev->base_addr + AXNET_GPIO); /* select Internal PHY */
382 for (i = 0; i < 32; i++) {
383 j = mdio_read(dev->base_addr + AXNET_MII_EEP, i, 1);
384 if ((j != 0) && (j != 0xffff)) break;
387 /* Maybe PHY is in power down mode. (PPD_SET = 1)
388 Bit 2 of CCSR is active low. */
390 conf_reg_t reg = { 0, CS_WRITE, CISREG_CCSR, 0x04 };
391 pcmcia_access_configuration_register(link, ®);
392 for (i = 0; i < 32; i++) {
393 j = mdio_read(dev->base_addr + AXNET_MII_EEP, i, 1);
394 if ((j != 0) && (j != 0xffff)) break;
398 info->phy_id = (i < 32) ? i : -1;
399 link->dev_node = &info->node;
400 SET_NETDEV_DEV(dev, &handle_to_dev(link));
402 if (register_netdev(dev) != 0) {
403 printk(KERN_NOTICE "axnet_cs: register_netdev() failed\n");
404 link->dev_node = NULL;
408 strcpy(info->node.dev_name, dev->name);
410 printk(KERN_INFO "%s: Asix AX88%d90: io %#3lx, irq %d, hw_addr ",
411 dev->name, ((info->flags & IS_AX88790) ? 7 : 1),
412 dev->base_addr, dev->irq);
413 for (i = 0; i < 6; i++)
414 printk("%02X%s", dev->dev_addr[i], ((i<5) ? ":" : "\n"));
415 if (info->phy_id != -1) {
416 DEBUG(0, " MII transceiver at index %d, status %x.\n", info->phy_id, j);
418 printk(KERN_NOTICE " No MII transceivers found!\n");
423 cs_error(link, last_fn, last_ret);
429 /*======================================================================
431 After a card is removed, axnet_release() will unregister the net
432 device, and release the PCMCIA configuration. If the device is
433 still open, this will be postponed until it is closed.
435 ======================================================================*/
437 static void axnet_release(struct pcmcia_device *link)
439 pcmcia_disable_device(link);
442 static int axnet_suspend(struct pcmcia_device *link)
444 struct net_device *dev = link->priv;
447 netif_device_detach(dev);
452 static int axnet_resume(struct pcmcia_device *link)
454 struct net_device *dev = link->priv;
457 axnet_reset_8390(dev);
458 AX88190_init(dev, 1);
459 netif_device_attach(dev);
466 /*======================================================================
468 MII interface support
470 ======================================================================*/
472 #define MDIO_SHIFT_CLK 0x01
473 #define MDIO_DATA_WRITE0 0x00
474 #define MDIO_DATA_WRITE1 0x08
475 #define MDIO_DATA_READ 0x04
476 #define MDIO_MASK 0x0f
477 #define MDIO_ENB_IN 0x02
479 static void mdio_sync(kio_addr_t addr)
482 for (bits = 0; bits < 32; bits++) {
483 outb_p(MDIO_DATA_WRITE1, addr);
484 outb_p(MDIO_DATA_WRITE1 | MDIO_SHIFT_CLK, addr);
488 static int mdio_read(kio_addr_t addr, int phy_id, int loc)
490 u_int cmd = (0xf6<<10)|(phy_id<<5)|loc;
494 for (i = 14; i >= 0; i--) {
495 int dat = (cmd&(1<<i)) ? MDIO_DATA_WRITE1 : MDIO_DATA_WRITE0;
497 outb_p(dat | MDIO_SHIFT_CLK, addr);
499 for (i = 19; i > 0; i--) {
500 outb_p(MDIO_ENB_IN, addr);
501 retval = (retval << 1) | ((inb_p(addr) & MDIO_DATA_READ) != 0);
502 outb_p(MDIO_ENB_IN | MDIO_SHIFT_CLK, addr);
504 return (retval>>1) & 0xffff;
507 static void mdio_write(kio_addr_t addr, int phy_id, int loc, int value)
509 u_int cmd = (0x05<<28)|(phy_id<<23)|(loc<<18)|(1<<17)|value;
513 for (i = 31; i >= 0; i--) {
514 int dat = (cmd&(1<<i)) ? MDIO_DATA_WRITE1 : MDIO_DATA_WRITE0;
516 outb_p(dat | MDIO_SHIFT_CLK, addr);
518 for (i = 1; i >= 0; i--) {
519 outb_p(MDIO_ENB_IN, addr);
520 outb_p(MDIO_ENB_IN | MDIO_SHIFT_CLK, addr);
524 /*====================================================================*/
526 static int axnet_open(struct net_device *dev)
528 axnet_dev_t *info = PRIV(dev);
529 struct pcmcia_device *link = info->p_dev;
531 DEBUG(2, "axnet_open('%s')\n", dev->name);
533 if (!pcmcia_dev_present(link))
538 request_irq(dev->irq, ei_irq_wrapper, IRQF_SHARED, "axnet_cs", dev);
540 info->link_status = 0x00;
541 init_timer(&info->watchdog);
542 info->watchdog.function = &ei_watchdog;
543 info->watchdog.data = (u_long)dev;
544 info->watchdog.expires = jiffies + HZ;
545 add_timer(&info->watchdog);
550 /*====================================================================*/
552 static int axnet_close(struct net_device *dev)
554 axnet_dev_t *info = PRIV(dev);
555 struct pcmcia_device *link = info->p_dev;
557 DEBUG(2, "axnet_close('%s')\n", dev->name);
560 free_irq(dev->irq, dev);
563 netif_stop_queue(dev);
564 del_timer_sync(&info->watchdog);
569 /*======================================================================
571 Hard reset the card. This used to pause for the same period that
572 a 8390 reset command required, but that shouldn't be necessary.
574 ======================================================================*/
576 static void axnet_reset_8390(struct net_device *dev)
578 kio_addr_t nic_base = dev->base_addr;
581 ei_status.txing = ei_status.dmaing = 0;
583 outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, nic_base + E8390_CMD);
585 outb(inb(nic_base + AXNET_RESET), nic_base + AXNET_RESET);
587 for (i = 0; i < 100; i++) {
588 if ((inb_p(nic_base+EN0_ISR) & ENISR_RESET) != 0)
592 outb_p(ENISR_RESET, nic_base + EN0_ISR); /* Ack intr. */
595 printk(KERN_ERR "%s: axnet_reset_8390() did not complete.\n",
598 } /* axnet_reset_8390 */
600 /*====================================================================*/
602 static irqreturn_t ei_irq_wrapper(int irq, void *dev_id, struct pt_regs *regs)
604 struct net_device *dev = dev_id;
605 PRIV(dev)->stale = 0;
606 return ax_interrupt(irq, dev_id, regs);
609 static void ei_watchdog(u_long arg)
611 struct net_device *dev = (struct net_device *)(arg);
612 axnet_dev_t *info = PRIV(dev);
613 kio_addr_t nic_base = dev->base_addr;
614 kio_addr_t mii_addr = nic_base + AXNET_MII_EEP;
617 if (!netif_device_present(dev)) goto reschedule;
619 /* Check for pending interrupt with expired latency timer: with
620 this, we can limp along even if the interrupt is blocked */
621 if (info->stale++ && (inb_p(nic_base + EN0_ISR) & ENISR_ALL)) {
622 if (!info->fast_poll)
623 printk(KERN_INFO "%s: interrupt(s) dropped!\n", dev->name);
624 ei_irq_wrapper(dev->irq, dev, NULL);
625 info->fast_poll = HZ;
627 if (info->fast_poll) {
629 info->watchdog.expires = jiffies + 1;
630 add_timer(&info->watchdog);
634 if (info->phy_id < 0)
636 link = mdio_read(mii_addr, info->phy_id, 1);
637 if (!link || (link == 0xffff)) {
638 printk(KERN_INFO "%s: MII is missing!\n", dev->name);
644 if (link != info->link_status) {
645 u_short p = mdio_read(mii_addr, info->phy_id, 5);
646 printk(KERN_INFO "%s: %s link beat\n", dev->name,
647 (link) ? "found" : "lost");
649 info->duplex_flag = (p & 0x0140) ? 0x80 : 0x00;
651 printk(KERN_INFO "%s: autonegotiation complete: "
652 "%sbaseT-%cD selected\n", dev->name,
653 ((p & 0x0180) ? "100" : "10"),
654 ((p & 0x0140) ? 'F' : 'H'));
656 printk(KERN_INFO "%s: link partner did not autonegotiate\n",
658 AX88190_init(dev, 1);
660 info->link_status = link;
664 info->watchdog.expires = jiffies + HZ;
665 add_timer(&info->watchdog);
668 static void netdev_get_drvinfo(struct net_device *dev,
669 struct ethtool_drvinfo *info)
671 strcpy(info->driver, "axnet_cs");
674 static const struct ethtool_ops netdev_ethtool_ops = {
675 .get_drvinfo = netdev_get_drvinfo,
678 /*====================================================================*/
680 static int axnet_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
682 axnet_dev_t *info = PRIV(dev);
683 u16 *data = (u16 *)&rq->ifr_ifru;
684 kio_addr_t mii_addr = dev->base_addr + AXNET_MII_EEP;
687 data[0] = info->phy_id;
688 case SIOCGMIIREG: /* Read MII PHY register. */
689 data[3] = mdio_read(mii_addr, data[0], data[1] & 0x1f);
691 case SIOCSMIIREG: /* Write MII PHY register. */
692 if (!capable(CAP_NET_ADMIN))
694 mdio_write(mii_addr, data[0], data[1] & 0x1f, data[2]);
700 /*====================================================================*/
702 static void get_8390_hdr(struct net_device *dev,
703 struct e8390_pkt_hdr *hdr,
706 kio_addr_t nic_base = dev->base_addr;
708 outb_p(0, nic_base + EN0_RSARLO); /* On page boundary */
709 outb_p(ring_page, nic_base + EN0_RSARHI);
710 outb_p(E8390_RREAD+E8390_START, nic_base + AXNET_CMD);
712 insw(nic_base + AXNET_DATAPORT, hdr,
713 sizeof(struct e8390_pkt_hdr)>>1);
714 /* Fix for big endian systems */
715 hdr->count = le16_to_cpu(hdr->count);
719 /*====================================================================*/
721 static void block_input(struct net_device *dev, int count,
722 struct sk_buff *skb, int ring_offset)
724 kio_addr_t nic_base = dev->base_addr;
725 int xfer_count = count;
726 char *buf = skb->data;
729 if ((ei_debug > 4) && (count != 4))
730 printk(KERN_DEBUG "%s: [bi=%d]\n", dev->name, count+4);
732 outb_p(ring_offset & 0xff, nic_base + EN0_RSARLO);
733 outb_p(ring_offset >> 8, nic_base + EN0_RSARHI);
734 outb_p(E8390_RREAD+E8390_START, nic_base + AXNET_CMD);
736 insw(nic_base + AXNET_DATAPORT,buf,count>>1);
738 buf[count-1] = inb(nic_base + AXNET_DATAPORT), xfer_count++;
742 /*====================================================================*/
744 static void block_output(struct net_device *dev, int count,
745 const u_char *buf, const int start_page)
747 kio_addr_t nic_base = dev->base_addr;
751 printk(KERN_DEBUG "%s: [bo=%d]\n", dev->name, count);
754 /* Round the count up for word writes. Do we need to do this?
755 What effect will an odd byte count have on the 8390?
756 I should check someday. */
760 outb_p(0x00, nic_base + EN0_RSARLO);
761 outb_p(start_page, nic_base + EN0_RSARHI);
762 outb_p(E8390_RWRITE+E8390_START, nic_base + AXNET_CMD);
763 outsw(nic_base + AXNET_DATAPORT, buf, count>>1);
766 static struct pcmcia_device_id axnet_ids[] = {
767 PCMCIA_PFC_DEVICE_MANF_CARD(0, 0x016c, 0x0081),
768 PCMCIA_DEVICE_MANF_CARD(0x018a, 0x0301),
769 PCMCIA_DEVICE_MANF_CARD(0x026f, 0x0301),
770 PCMCIA_DEVICE_MANF_CARD(0x026f, 0x0303),
771 PCMCIA_DEVICE_MANF_CARD(0x026f, 0x0309),
772 PCMCIA_DEVICE_MANF_CARD(0x0274, 0x1106),
773 PCMCIA_DEVICE_MANF_CARD(0x8a01, 0xc1ab),
774 PCMCIA_DEVICE_MANF_CARD(0x021b, 0x0202),
775 PCMCIA_DEVICE_PROD_ID12("AmbiCom,Inc.", "Fast Ethernet PC Card(AMB8110)", 0x49b020a7, 0x119cc9fc),
776 PCMCIA_DEVICE_PROD_ID124("Fast Ethernet", "16-bit PC Card", "AX88190", 0xb4be14e3, 0x9a12eb6a, 0xab9be5ef),
777 PCMCIA_DEVICE_PROD_ID12("ASIX", "AX88190", 0x0959823b, 0xab9be5ef),
778 PCMCIA_DEVICE_PROD_ID12("Billionton", "LNA-100B", 0x552ab682, 0xbc3b87e1),
779 PCMCIA_DEVICE_PROD_ID12("CHEETAH ETHERCARD", "EN2228", 0x00fa7bc8, 0x00e990cc),
780 PCMCIA_DEVICE_PROD_ID12("CNet", "CNF301", 0xbc477dde, 0x78c5f40b),
781 PCMCIA_DEVICE_PROD_ID12("corega K.K.", "corega FEther PCC-TXD", 0x5261440f, 0x436768c5),
782 PCMCIA_DEVICE_PROD_ID12("corega K.K.", "corega FEtherII PCC-TXD", 0x5261440f, 0x730df72e),
783 PCMCIA_DEVICE_PROD_ID12("Dynalink", "L100C16", 0x55632fd5, 0x66bc2a90),
784 PCMCIA_DEVICE_PROD_ID12("Linksys", "EtherFast 10/100 PC Card (PCMPC100 V3)", 0x0733cc81, 0x232019a8),
785 PCMCIA_DEVICE_PROD_ID12("MELCO", "LPC3-TX", 0x481e0094, 0xf91af609),
786 PCMCIA_DEVICE_PROD_ID12("PCMCIA", "100BASE", 0x281f1c5d, 0x7c2add04),
787 PCMCIA_DEVICE_PROD_ID12("PCMCIA", "FastEtherCard", 0x281f1c5d, 0x7ef26116),
788 PCMCIA_DEVICE_PROD_ID12("PCMCIA", "FEP501", 0x281f1c5d, 0x2e272058),
789 PCMCIA_DEVICE_PROD_ID14("Network Everywhere", "AX88190", 0x820a67b6, 0xab9be5ef),
792 MODULE_DEVICE_TABLE(pcmcia, axnet_ids);
794 static struct pcmcia_driver axnet_cs_driver = {
795 .owner = THIS_MODULE,
799 .probe = axnet_probe,
800 .remove = axnet_detach,
801 .id_table = axnet_ids,
802 .suspend = axnet_suspend,
803 .resume = axnet_resume,
806 static int __init init_axnet_cs(void)
808 return pcmcia_register_driver(&axnet_cs_driver);
811 static void __exit exit_axnet_cs(void)
813 pcmcia_unregister_driver(&axnet_cs_driver);
816 module_init(init_axnet_cs);
817 module_exit(exit_axnet_cs);
819 /*====================================================================*/
821 /* 8390.c: A general NS8390 ethernet driver core for linux. */
823 Written 1992-94 by Donald Becker.
825 Copyright 1993 United States Government as represented by the
826 Director, National Security Agency.
828 This software may be used and distributed according to the terms
829 of the GNU General Public License, incorporated herein by reference.
831 The author may be reached as becker@scyld.com, or C/O
832 Scyld Computing Corporation
833 410 Severn Ave., Suite 210
836 This is the chip-specific code for many 8390-based ethernet adaptors.
837 This is not a complete driver, it must be combined with board-specific
838 code such as ne.c, wd.c, 3c503.c, etc.
840 Seeing how at least eight drivers use this code, (not counting the
841 PCMCIA ones either) it is easy to break some card by what seems like
842 a simple innocent change. Please contact me or Donald if you think
843 you have found something that needs changing. -- PG
847 Paul Gortmaker : remove set_bit lock, other cleanups.
848 Paul Gortmaker : add ei_get_8390_hdr() so we can pass skb's to
849 ei_block_input() for eth_io_copy_and_sum().
850 Paul Gortmaker : exchange static int ei_pingpong for a #define,
851 also add better Tx error handling.
852 Paul Gortmaker : rewrite Rx overrun handling as per NS specs.
853 Alexey Kuznetsov : use the 8390's six bit hash multicast filter.
854 Paul Gortmaker : tweak ANK's above multicast changes a bit.
855 Paul Gortmaker : update packet statistics for v2.1.x
856 Alan Cox : support arbitary stupid port mappings on the
857 68K Macintosh. Support >16bit I/O spaces
858 Paul Gortmaker : add kmod support for auto-loading of the 8390
859 module by all drivers that require it.
860 Alan Cox : Spinlocking work, added 'BUG_83C690'
861 Paul Gortmaker : Separate out Tx timeout code from Tx path.
864 The National Semiconductor LAN Databook, and the 3Com 3c503 databook.
868 static const char *version_8390 =
869 "8390.c:v1.10cvs 9/23/94 Donald Becker (becker@scyld.com)\n";
871 #include <linux/bitops.h>
873 #include <linux/fcntl.h>
874 #include <linux/in.h>
875 #include <linux/interrupt.h>
877 #include <linux/etherdevice.h>
881 /* These are the operational function interfaces to board-specific
883 void reset_8390(struct net_device *dev)
884 Resets the board associated with DEV, including a hardware reset of
885 the 8390. This is only called when there is a transmit timeout, and
886 it is always followed by 8390_init().
887 void block_output(struct net_device *dev, int count, const unsigned char *buf,
889 Write the COUNT bytes of BUF to the packet buffer at START_PAGE. The
890 "page" value uses the 8390's 256-byte pages.
891 void get_8390_hdr(struct net_device *dev, struct e8390_hdr *hdr, int ring_page)
892 Read the 4 byte, page aligned 8390 header. *If* there is a
893 subsequent read, it will be of the rest of the packet.
894 void block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset)
895 Read COUNT bytes from the packet buffer into the skb data area. Start
896 reading from RING_OFFSET, the address as the 8390 sees it. This will always
897 follow the read of the 8390 header.
899 #define ei_reset_8390 (ei_local->reset_8390)
900 #define ei_block_output (ei_local->block_output)
901 #define ei_block_input (ei_local->block_input)
902 #define ei_get_8390_hdr (ei_local->get_8390_hdr)
904 /* use 0 for production, 1 for verification, >2 for debug */
909 /* Index to functions. */
910 static void ei_tx_intr(struct net_device *dev);
911 static void ei_tx_err(struct net_device *dev);
912 static void ei_tx_timeout(struct net_device *dev);
913 static void ei_receive(struct net_device *dev);
914 static void ei_rx_overrun(struct net_device *dev);
916 /* Routines generic to NS8390-based boards. */
917 static void NS8390_trigger_send(struct net_device *dev, unsigned int length,
919 static void set_multicast_list(struct net_device *dev);
920 static void do_set_multicast_list(struct net_device *dev);
923 * SMP and the 8390 setup.
925 * The 8390 isnt exactly designed to be multithreaded on RX/TX. There is
926 * a page register that controls bank and packet buffer access. We guard
927 * this with ei_local->page_lock. Nobody should assume or set the page other
928 * than zero when the lock is not held. Lock holders must restore page 0
929 * before unlocking. Even pure readers must take the lock to protect in
932 * To make life difficult the chip can also be very slow. We therefore can't
933 * just use spinlocks. For the longer lockups we disable the irq the device
934 * sits on and hold the lock. We must hold the lock because there is a dual
935 * processor case other than interrupts (get stats/set multicast list in
936 * parallel with each other and transmit).
938 * Note: in theory we can just disable the irq on the card _but_ there is
939 * a latency on SMP irq delivery. So we can easily go "disable irq" "sync irqs"
940 * enter lock, take the queued irq. So we waddle instead of flying.
942 * Finally by special arrangement for the purpose of being generally
943 * annoying the transmit function is called bh atomic. That places
944 * restrictions on the user context callers as disable_irq won't save
949 * ax_open - Open/initialize the board.
950 * @dev: network device to initialize
952 * This routine goes all-out, setting everything
953 * up anew at each open, even though many of these registers should only
954 * need to be set once at boot.
956 static int ax_open(struct net_device *dev)
959 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
961 #ifdef HAVE_TX_TIMEOUT
962 /* The card I/O part of the driver (e.g. 3c503) can hook a Tx timeout
963 wrapper that does e.g. media check & then calls ei_tx_timeout. */
964 if (dev->tx_timeout == NULL)
965 dev->tx_timeout = ei_tx_timeout;
966 if (dev->watchdog_timeo <= 0)
967 dev->watchdog_timeo = TX_TIMEOUT;
971 * Grab the page lock so we own the register set, then call
975 spin_lock_irqsave(&ei_local->page_lock, flags);
976 AX88190_init(dev, 1);
977 /* Set the flag before we drop the lock, That way the IRQ arrives
978 after its set and we get no silly warnings */
979 netif_start_queue(dev);
980 spin_unlock_irqrestore(&ei_local->page_lock, flags);
981 ei_local->irqlock = 0;
985 #define dev_lock(dev) (((struct ei_device *)netdev_priv(dev))->page_lock)
988 * ax_close - shut down network device
989 * @dev: network device to close
991 * Opposite of ax_open(). Only used when "ifconfig <devname> down" is done.
993 int ax_close(struct net_device *dev)
998 * Hold the page lock during close
1001 spin_lock_irqsave(&dev_lock(dev), flags);
1002 AX88190_init(dev, 0);
1003 spin_unlock_irqrestore(&dev_lock(dev), flags);
1004 netif_stop_queue(dev);
1009 * ei_tx_timeout - handle transmit time out condition
1010 * @dev: network device which has apparently fallen asleep
1012 * Called by kernel when device never acknowledges a transmit has
1013 * completed (or failed) - i.e. never posted a Tx related interrupt.
1016 void ei_tx_timeout(struct net_device *dev)
1018 long e8390_base = dev->base_addr;
1019 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1020 int txsr, isr, tickssofar = jiffies - dev->trans_start;
1021 unsigned long flags;
1023 ei_local->stat.tx_errors++;
1025 spin_lock_irqsave(&ei_local->page_lock, flags);
1026 txsr = inb(e8390_base+EN0_TSR);
1027 isr = inb(e8390_base+EN0_ISR);
1028 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1030 printk(KERN_DEBUG "%s: Tx timed out, %s TSR=%#2x, ISR=%#2x, t=%d.\n",
1031 dev->name, (txsr & ENTSR_ABT) ? "excess collisions." :
1032 (isr) ? "lost interrupt?" : "cable problem?", txsr, isr, tickssofar);
1034 if (!isr && !ei_local->stat.tx_packets)
1036 /* The 8390 probably hasn't gotten on the cable yet. */
1037 ei_local->interface_num ^= 1; /* Try a different xcvr. */
1040 /* Ugly but a reset can be slow, yet must be protected */
1042 disable_irq_nosync(dev->irq);
1043 spin_lock(&ei_local->page_lock);
1045 /* Try to restart the card. Perhaps the user has fixed something. */
1047 AX88190_init(dev, 1);
1049 spin_unlock(&ei_local->page_lock);
1050 enable_irq(dev->irq);
1051 netif_wake_queue(dev);
1055 * ei_start_xmit - begin packet transmission
1056 * @skb: packet to be sent
1057 * @dev: network device to which packet is sent
1059 * Sends a packet to an 8390 network device.
1062 static int ei_start_xmit(struct sk_buff *skb, struct net_device *dev)
1064 long e8390_base = dev->base_addr;
1065 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1066 int length, send_length, output_page;
1067 unsigned long flags;
1068 u8 packet[ETH_ZLEN];
1070 netif_stop_queue(dev);
1074 /* Mask interrupts from the ethercard.
1075 SMP: We have to grab the lock here otherwise the IRQ handler
1076 on another CPU can flip window and race the IRQ mask set. We end
1077 up trashing the mcast filter not disabling irqs if we don't lock */
1079 spin_lock_irqsave(&ei_local->page_lock, flags);
1080 outb_p(0x00, e8390_base + EN0_IMR);
1081 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1084 * Slow phase with lock held.
1087 disable_irq_nosync(dev->irq);
1089 spin_lock(&ei_local->page_lock);
1091 ei_local->irqlock = 1;
1093 send_length = ETH_ZLEN < length ? length : ETH_ZLEN;
1096 * We have two Tx slots available for use. Find the first free
1097 * slot, and then perform some sanity checks. With two Tx bufs,
1098 * you get very close to transmitting back-to-back packets. With
1099 * only one Tx buf, the transmitter sits idle while you reload the
1100 * card, leaving a substantial gap between each transmitted packet.
1103 if (ei_local->tx1 == 0)
1105 output_page = ei_local->tx_start_page;
1106 ei_local->tx1 = send_length;
1107 if (ei_debug && ei_local->tx2 > 0)
1108 printk(KERN_DEBUG "%s: idle transmitter tx2=%d, lasttx=%d, txing=%d.\n",
1109 dev->name, ei_local->tx2, ei_local->lasttx, ei_local->txing);
1111 else if (ei_local->tx2 == 0)
1113 output_page = ei_local->tx_start_page + TX_PAGES/2;
1114 ei_local->tx2 = send_length;
1115 if (ei_debug && ei_local->tx1 > 0)
1116 printk(KERN_DEBUG "%s: idle transmitter, tx1=%d, lasttx=%d, txing=%d.\n",
1117 dev->name, ei_local->tx1, ei_local->lasttx, ei_local->txing);
1120 { /* We should never get here. */
1122 printk(KERN_DEBUG "%s: No Tx buffers free! tx1=%d tx2=%d last=%d\n",
1123 dev->name, ei_local->tx1, ei_local->tx2, ei_local->lasttx);
1124 ei_local->irqlock = 0;
1125 netif_stop_queue(dev);
1126 outb_p(ENISR_ALL, e8390_base + EN0_IMR);
1127 spin_unlock(&ei_local->page_lock);
1128 enable_irq(dev->irq);
1129 ei_local->stat.tx_errors++;
1134 * Okay, now upload the packet and trigger a send if the transmitter
1135 * isn't already sending. If it is busy, the interrupt handler will
1136 * trigger the send later, upon receiving a Tx done interrupt.
1139 if (length == skb->len)
1140 ei_block_output(dev, length, skb->data, output_page);
1142 memset(packet, 0, ETH_ZLEN);
1143 memcpy(packet, skb->data, skb->len);
1144 ei_block_output(dev, length, packet, output_page);
1147 if (! ei_local->txing)
1149 ei_local->txing = 1;
1150 NS8390_trigger_send(dev, send_length, output_page);
1151 dev->trans_start = jiffies;
1152 if (output_page == ei_local->tx_start_page)
1155 ei_local->lasttx = -1;
1160 ei_local->lasttx = -2;
1163 else ei_local->txqueue++;
1165 if (ei_local->tx1 && ei_local->tx2)
1166 netif_stop_queue(dev);
1168 netif_start_queue(dev);
1170 /* Turn 8390 interrupts back on. */
1171 ei_local->irqlock = 0;
1172 outb_p(ENISR_ALL, e8390_base + EN0_IMR);
1174 spin_unlock(&ei_local->page_lock);
1175 enable_irq(dev->irq);
1177 dev_kfree_skb (skb);
1178 ei_local->stat.tx_bytes += send_length;
1184 * ax_interrupt - handle the interrupts from an 8390
1185 * @irq: interrupt number
1186 * @dev_id: a pointer to the net_device
1189 * Handle the ether interface interrupts. We pull packets from
1190 * the 8390 via the card specific functions and fire them at the networking
1191 * stack. We also handle transmit completions and wake the transmit path if
1192 * necessary. We also update the counters and do other housekeeping as
1196 static irqreturn_t ax_interrupt(int irq, void *dev_id, struct pt_regs * regs)
1198 struct net_device *dev = dev_id;
1200 int interrupts, nr_serviced = 0, i;
1201 struct ei_device *ei_local;
1206 printk ("net_interrupt(): irq %d for unknown device.\n", irq);
1210 e8390_base = dev->base_addr;
1211 ei_local = (struct ei_device *) netdev_priv(dev);
1214 * Protect the irq test too.
1217 spin_lock(&ei_local->page_lock);
1219 if (ei_local->irqlock)
1221 #if 1 /* This might just be an interrupt for a PCI device sharing this line */
1222 /* The "irqlock" check is only for testing. */
1223 printk(ei_local->irqlock
1224 ? "%s: Interrupted while interrupts are masked! isr=%#2x imr=%#2x.\n"
1225 : "%s: Reentering the interrupt handler! isr=%#2x imr=%#2x.\n",
1226 dev->name, inb_p(e8390_base + EN0_ISR),
1227 inb_p(e8390_base + EN0_IMR));
1229 spin_unlock(&ei_local->page_lock);
1234 printk(KERN_DEBUG "%s: interrupt(isr=%#2.2x).\n", dev->name,
1235 inb_p(e8390_base + EN0_ISR));
1237 outb_p(0x00, e8390_base + EN0_ISR);
1238 ei_local->irqlock = 1;
1240 /* !!Assumption!! -- we stay in page 0. Don't break this. */
1241 while ((interrupts = inb_p(e8390_base + EN0_ISR)) != 0
1242 && ++nr_serviced < MAX_SERVICE)
1244 if (!netif_running(dev) || (interrupts == 0xff)) {
1246 printk(KERN_WARNING "%s: interrupt from stopped card\n", dev->name);
1247 outb_p(interrupts, e8390_base + EN0_ISR);
1253 /* AX88190 bug fix. */
1254 outb_p(interrupts, e8390_base + EN0_ISR);
1255 for (i = 0; i < 10; i++) {
1256 if (!(inb(e8390_base + EN0_ISR) & interrupts))
1258 outb_p(0, e8390_base + EN0_ISR);
1259 outb_p(interrupts, e8390_base + EN0_ISR);
1261 if (interrupts & ENISR_OVER)
1263 else if (interrupts & (ENISR_RX+ENISR_RX_ERR))
1265 /* Got a good (?) packet. */
1268 /* Push the next to-transmit packet through. */
1269 if (interrupts & ENISR_TX)
1271 else if (interrupts & ENISR_TX_ERR)
1274 if (interrupts & ENISR_COUNTERS)
1276 ei_local->stat.rx_frame_errors += inb_p(e8390_base + EN0_COUNTER0);
1277 ei_local->stat.rx_crc_errors += inb_p(e8390_base + EN0_COUNTER1);
1278 ei_local->stat.rx_missed_errors+= inb_p(e8390_base + EN0_COUNTER2);
1282 if (interrupts && ei_debug)
1285 if (nr_serviced >= MAX_SERVICE)
1287 /* 0xFF is valid for a card removal */
1288 if(interrupts!=0xFF)
1289 printk(KERN_WARNING "%s: Too much work at interrupt, status %#2.2x\n",
1290 dev->name, interrupts);
1291 outb_p(ENISR_ALL, e8390_base + EN0_ISR); /* Ack. most intrs. */
1293 printk(KERN_WARNING "%s: unknown interrupt %#2x\n", dev->name, interrupts);
1294 outb_p(0xff, e8390_base + EN0_ISR); /* Ack. all intrs. */
1298 /* Turn 8390 interrupts back on. */
1299 ei_local->irqlock = 0;
1300 outb_p(ENISR_ALL, e8390_base + EN0_IMR);
1302 spin_unlock(&ei_local->page_lock);
1303 return IRQ_RETVAL(handled);
1307 * ei_tx_err - handle transmitter error
1308 * @dev: network device which threw the exception
1310 * A transmitter error has happened. Most likely excess collisions (which
1311 * is a fairly normal condition). If the error is one where the Tx will
1312 * have been aborted, we try and send another one right away, instead of
1313 * letting the failed packet sit and collect dust in the Tx buffer. This
1314 * is a much better solution as it avoids kernel based Tx timeouts, and
1315 * an unnecessary card reset.
1317 * Called with lock held.
1320 static void ei_tx_err(struct net_device *dev)
1322 long e8390_base = dev->base_addr;
1323 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1324 unsigned char txsr = inb_p(e8390_base+EN0_TSR);
1325 unsigned char tx_was_aborted = txsr & (ENTSR_ABT+ENTSR_FU);
1327 #ifdef VERBOSE_ERROR_DUMP
1328 printk(KERN_DEBUG "%s: transmitter error (%#2x): ", dev->name, txsr);
1329 if (txsr & ENTSR_ABT)
1330 printk("excess-collisions ");
1331 if (txsr & ENTSR_ND)
1332 printk("non-deferral ");
1333 if (txsr & ENTSR_CRS)
1334 printk("lost-carrier ");
1335 if (txsr & ENTSR_FU)
1336 printk("FIFO-underrun ");
1337 if (txsr & ENTSR_CDH)
1338 printk("lost-heartbeat ");
1346 ei_local->stat.tx_errors++;
1347 if (txsr & ENTSR_CRS) ei_local->stat.tx_carrier_errors++;
1348 if (txsr & ENTSR_CDH) ei_local->stat.tx_heartbeat_errors++;
1349 if (txsr & ENTSR_OWC) ei_local->stat.tx_window_errors++;
1354 * ei_tx_intr - transmit interrupt handler
1355 * @dev: network device for which tx intr is handled
1357 * We have finished a transmit: check for errors and then trigger the next
1358 * packet to be sent. Called with lock held.
1361 static void ei_tx_intr(struct net_device *dev)
1363 long e8390_base = dev->base_addr;
1364 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1365 int status = inb(e8390_base + EN0_TSR);
1368 * There are two Tx buffers, see which one finished, and trigger
1369 * the send of another one if it exists.
1371 ei_local->txqueue--;
1373 if (ei_local->tx1 < 0)
1375 if (ei_local->lasttx != 1 && ei_local->lasttx != -1)
1376 printk(KERN_ERR "%s: bogus last_tx_buffer %d, tx1=%d.\n",
1377 ei_local->name, ei_local->lasttx, ei_local->tx1);
1379 if (ei_local->tx2 > 0)
1381 ei_local->txing = 1;
1382 NS8390_trigger_send(dev, ei_local->tx2, ei_local->tx_start_page + 6);
1383 dev->trans_start = jiffies;
1385 ei_local->lasttx = 2;
1387 else ei_local->lasttx = 20, ei_local->txing = 0;
1389 else if (ei_local->tx2 < 0)
1391 if (ei_local->lasttx != 2 && ei_local->lasttx != -2)
1392 printk("%s: bogus last_tx_buffer %d, tx2=%d.\n",
1393 ei_local->name, ei_local->lasttx, ei_local->tx2);
1395 if (ei_local->tx1 > 0)
1397 ei_local->txing = 1;
1398 NS8390_trigger_send(dev, ei_local->tx1, ei_local->tx_start_page);
1399 dev->trans_start = jiffies;
1401 ei_local->lasttx = 1;
1404 ei_local->lasttx = 10, ei_local->txing = 0;
1406 // else printk(KERN_WARNING "%s: unexpected TX-done interrupt, lasttx=%d.\n",
1407 // dev->name, ei_local->lasttx);
1409 /* Minimize Tx latency: update the statistics after we restart TXing. */
1410 if (status & ENTSR_COL)
1411 ei_local->stat.collisions++;
1412 if (status & ENTSR_PTX)
1413 ei_local->stat.tx_packets++;
1416 ei_local->stat.tx_errors++;
1417 if (status & ENTSR_ABT)
1419 ei_local->stat.tx_aborted_errors++;
1420 ei_local->stat.collisions += 16;
1422 if (status & ENTSR_CRS)
1423 ei_local->stat.tx_carrier_errors++;
1424 if (status & ENTSR_FU)
1425 ei_local->stat.tx_fifo_errors++;
1426 if (status & ENTSR_CDH)
1427 ei_local->stat.tx_heartbeat_errors++;
1428 if (status & ENTSR_OWC)
1429 ei_local->stat.tx_window_errors++;
1431 netif_wake_queue(dev);
1435 * ei_receive - receive some packets
1436 * @dev: network device with which receive will be run
1438 * We have a good packet(s), get it/them out of the buffers.
1439 * Called with lock held.
1442 static void ei_receive(struct net_device *dev)
1444 long e8390_base = dev->base_addr;
1445 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1446 unsigned char rxing_page, this_frame, next_frame;
1447 unsigned short current_offset;
1448 int rx_pkt_count = 0;
1449 struct e8390_pkt_hdr rx_frame;
1451 while (++rx_pkt_count < 10)
1453 int pkt_len, pkt_stat;
1455 /* Get the rx page (incoming packet pointer). */
1456 rxing_page = inb_p(e8390_base + EN1_CURPAG -1);
1458 /* Remove one frame from the ring. Boundary is always a page behind. */
1459 this_frame = inb_p(e8390_base + EN0_BOUNDARY) + 1;
1460 if (this_frame >= ei_local->stop_page)
1461 this_frame = ei_local->rx_start_page;
1463 /* Someday we'll omit the previous, iff we never get this message.
1464 (There is at least one clone claimed to have a problem.)
1466 Keep quiet if it looks like a card removal. One problem here
1467 is that some clones crash in roughly the same way.
1469 if (ei_debug > 0 && this_frame != ei_local->current_page && (this_frame!=0x0 || rxing_page!=0xFF))
1470 printk(KERN_ERR "%s: mismatched read page pointers %2x vs %2x.\n",
1471 dev->name, this_frame, ei_local->current_page);
1473 if (this_frame == rxing_page) /* Read all the frames? */
1474 break; /* Done for now */
1476 current_offset = this_frame << 8;
1477 ei_get_8390_hdr(dev, &rx_frame, this_frame);
1479 pkt_len = rx_frame.count - sizeof(struct e8390_pkt_hdr);
1480 pkt_stat = rx_frame.status;
1482 next_frame = this_frame + 1 + ((pkt_len+4)>>8);
1484 if (pkt_len < 60 || pkt_len > 1518)
1487 printk(KERN_DEBUG "%s: bogus packet size: %d, status=%#2x nxpg=%#2x.\n",
1488 dev->name, rx_frame.count, rx_frame.status,
1490 ei_local->stat.rx_errors++;
1491 ei_local->stat.rx_length_errors++;
1493 else if ((pkt_stat & 0x0F) == ENRSR_RXOK)
1495 struct sk_buff *skb;
1497 skb = dev_alloc_skb(pkt_len+2);
1501 printk(KERN_DEBUG "%s: Couldn't allocate a sk_buff of size %d.\n",
1502 dev->name, pkt_len);
1503 ei_local->stat.rx_dropped++;
1508 skb_reserve(skb,2); /* IP headers on 16 byte boundaries */
1510 skb_put(skb, pkt_len); /* Make room */
1511 ei_block_input(dev, pkt_len, skb, current_offset + sizeof(rx_frame));
1512 skb->protocol=eth_type_trans(skb,dev);
1514 dev->last_rx = jiffies;
1515 ei_local->stat.rx_packets++;
1516 ei_local->stat.rx_bytes += pkt_len;
1517 if (pkt_stat & ENRSR_PHY)
1518 ei_local->stat.multicast++;
1524 printk(KERN_DEBUG "%s: bogus packet: status=%#2x nxpg=%#2x size=%d\n",
1525 dev->name, rx_frame.status, rx_frame.next,
1527 ei_local->stat.rx_errors++;
1528 /* NB: The NIC counts CRC, frame and missed errors. */
1529 if (pkt_stat & ENRSR_FO)
1530 ei_local->stat.rx_fifo_errors++;
1532 next_frame = rx_frame.next;
1534 /* This _should_ never happen: it's here for avoiding bad clones. */
1535 if (next_frame >= ei_local->stop_page) {
1536 printk("%s: next frame inconsistency, %#2x\n", dev->name,
1538 next_frame = ei_local->rx_start_page;
1540 ei_local->current_page = next_frame;
1541 outb_p(next_frame-1, e8390_base+EN0_BOUNDARY);
1548 * ei_rx_overrun - handle receiver overrun
1549 * @dev: network device which threw exception
1551 * We have a receiver overrun: we have to kick the 8390 to get it started
1552 * again. Problem is that you have to kick it exactly as NS prescribes in
1553 * the updated datasheets, or "the NIC may act in an unpredictable manner."
1554 * This includes causing "the NIC to defer indefinitely when it is stopped
1555 * on a busy network." Ugh.
1556 * Called with lock held. Don't call this with the interrupts off or your
1557 * computer will hate you - it takes 10ms or so.
1560 static void ei_rx_overrun(struct net_device *dev)
1562 axnet_dev_t *info = PRIV(dev);
1563 long e8390_base = dev->base_addr;
1564 unsigned char was_txing, must_resend = 0;
1565 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1568 * Record whether a Tx was in progress and then issue the
1571 was_txing = inb_p(e8390_base+E8390_CMD) & E8390_TRANS;
1572 outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD);
1575 printk(KERN_DEBUG "%s: Receiver overrun.\n", dev->name);
1576 ei_local->stat.rx_over_errors++;
1579 * Wait a full Tx time (1.2ms) + some guard time, NS says 1.6ms total.
1580 * Early datasheets said to poll the reset bit, but now they say that
1581 * it "is not a reliable indicator and subsequently should be ignored."
1582 * We wait at least 10ms.
1588 * Reset RBCR[01] back to zero as per magic incantation.
1590 outb_p(0x00, e8390_base+EN0_RCNTLO);
1591 outb_p(0x00, e8390_base+EN0_RCNTHI);
1594 * See if any Tx was interrupted or not. According to NS, this
1595 * step is vital, and skipping it will cause no end of havoc.
1600 unsigned char tx_completed = inb_p(e8390_base+EN0_ISR) & (ENISR_TX+ENISR_TX_ERR);
1606 * Have to enter loopback mode and then restart the NIC before
1607 * you are allowed to slurp packets up off the ring.
1609 outb_p(E8390_TXOFF, e8390_base + EN0_TXCR);
1610 outb_p(E8390_NODMA + E8390_PAGE0 + E8390_START, e8390_base + E8390_CMD);
1613 * Clear the Rx ring of all the debris, and ack the interrupt.
1618 * Leave loopback mode, and resend any packet that got stopped.
1620 outb_p(E8390_TXCONFIG | info->duplex_flag, e8390_base + EN0_TXCR);
1622 outb_p(E8390_NODMA + E8390_PAGE0 + E8390_START + E8390_TRANS, e8390_base + E8390_CMD);
1626 * Collect the stats. This is called unlocked and from several contexts.
1629 static struct net_device_stats *get_stats(struct net_device *dev)
1631 long ioaddr = dev->base_addr;
1632 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1633 unsigned long flags;
1635 /* If the card is stopped, just return the present stats. */
1636 if (!netif_running(dev))
1637 return &ei_local->stat;
1639 spin_lock_irqsave(&ei_local->page_lock,flags);
1640 /* Read the counter registers, assuming we are in page 0. */
1641 ei_local->stat.rx_frame_errors += inb_p(ioaddr + EN0_COUNTER0);
1642 ei_local->stat.rx_crc_errors += inb_p(ioaddr + EN0_COUNTER1);
1643 ei_local->stat.rx_missed_errors+= inb_p(ioaddr + EN0_COUNTER2);
1644 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1646 return &ei_local->stat;
1650 * Form the 64 bit 8390 multicast table from the linked list of addresses
1651 * associated with this dev structure.
1654 static inline void make_mc_bits(u8 *bits, struct net_device *dev)
1656 struct dev_mc_list *dmi;
1659 for (dmi=dev->mc_list; dmi; dmi=dmi->next) {
1661 crc = ether_crc(ETH_ALEN, dmi->dmi_addr);
1663 * The 8390 uses the 6 most significant bits of the
1664 * CRC to index the multicast table.
1666 bits[crc>>29] |= (1<<((crc>>26)&7));
1671 * do_set_multicast_list - set/clear multicast filter
1672 * @dev: net device for which multicast filter is adjusted
1674 * Set or clear the multicast filter for this adaptor.
1675 * Must be called with lock held.
1678 static void do_set_multicast_list(struct net_device *dev)
1680 long e8390_base = dev->base_addr;
1682 struct ei_device *ei_local = (struct ei_device*)netdev_priv(dev);
1684 if (!(dev->flags&(IFF_PROMISC|IFF_ALLMULTI))) {
1685 memset(ei_local->mcfilter, 0, 8);
1687 make_mc_bits(ei_local->mcfilter, dev);
1689 /* set to accept-all */
1690 memset(ei_local->mcfilter, 0xFF, 8);
1693 outb_p(E8390_NODMA + E8390_PAGE1, e8390_base + E8390_CMD);
1694 for(i = 0; i < 8; i++)
1696 outb_p(ei_local->mcfilter[i], e8390_base + EN1_MULT_SHIFT(i));
1698 outb_p(E8390_NODMA + E8390_PAGE0, e8390_base + E8390_CMD);
1700 if(dev->flags&IFF_PROMISC)
1701 outb_p(E8390_RXCONFIG | 0x58, e8390_base + EN0_RXCR);
1702 else if(dev->flags&IFF_ALLMULTI || dev->mc_list)
1703 outb_p(E8390_RXCONFIG | 0x48, e8390_base + EN0_RXCR);
1705 outb_p(E8390_RXCONFIG | 0x40, e8390_base + EN0_RXCR);
1707 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, e8390_base+E8390_CMD);
1711 * Called without lock held. This is invoked from user context and may
1712 * be parallel to just about everything else. Its also fairly quick and
1713 * not called too often. Must protect against both bh and irq users
1716 static void set_multicast_list(struct net_device *dev)
1718 unsigned long flags;
1720 spin_lock_irqsave(&dev_lock(dev), flags);
1721 do_set_multicast_list(dev);
1722 spin_unlock_irqrestore(&dev_lock(dev), flags);
1726 * axdev_setup - init rest of 8390 device struct
1727 * @dev: network device structure to init
1729 * Initialize the rest of the 8390 device structure. Do NOT __init
1730 * this, as it is used by 8390 based modular drivers too.
1733 static void axdev_setup(struct net_device *dev)
1735 struct ei_device *ei_local;
1737 printk(version_8390);
1739 SET_MODULE_OWNER(dev);
1742 ei_local = (struct ei_device *)netdev_priv(dev);
1743 spin_lock_init(&ei_local->page_lock);
1745 dev->hard_start_xmit = &ei_start_xmit;
1746 dev->get_stats = get_stats;
1747 dev->set_multicast_list = &set_multicast_list;
1752 /* This page of functions should be 8390 generic */
1753 /* Follow National Semi's recommendations for initializing the "NIC". */
1756 * AX88190_init - initialize 8390 hardware
1757 * @dev: network device to initialize
1758 * @startp: boolean. non-zero value to initiate chip processing
1760 * Must be called with lock held.
1763 static void AX88190_init(struct net_device *dev, int startp)
1765 axnet_dev_t *info = PRIV(dev);
1766 long e8390_base = dev->base_addr;
1767 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1769 int endcfg = ei_local->word16 ? (0x48 | ENDCFG_WTS) : 0x48;
1771 if(sizeof(struct e8390_pkt_hdr)!=4)
1772 panic("8390.c: header struct mispacked\n");
1773 /* Follow National Semi's recommendations for initing the DP83902. */
1774 outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD); /* 0x21 */
1775 outb_p(endcfg, e8390_base + EN0_DCFG); /* 0x48 or 0x49 */
1776 /* Clear the remote byte count registers. */
1777 outb_p(0x00, e8390_base + EN0_RCNTLO);
1778 outb_p(0x00, e8390_base + EN0_RCNTHI);
1779 /* Set to monitor and loopback mode -- this is vital!. */
1780 outb_p(E8390_RXOFF|0x40, e8390_base + EN0_RXCR); /* 0x60 */
1781 outb_p(E8390_TXOFF, e8390_base + EN0_TXCR); /* 0x02 */
1782 /* Set the transmit page and receive ring. */
1783 outb_p(ei_local->tx_start_page, e8390_base + EN0_TPSR);
1784 ei_local->tx1 = ei_local->tx2 = 0;
1785 outb_p(ei_local->rx_start_page, e8390_base + EN0_STARTPG);
1786 outb_p(ei_local->stop_page-1, e8390_base + EN0_BOUNDARY); /* 3c503 says 0x3f,NS0x26*/
1787 ei_local->current_page = ei_local->rx_start_page; /* assert boundary+1 */
1788 outb_p(ei_local->stop_page, e8390_base + EN0_STOPPG);
1789 /* Clear the pending interrupts and mask. */
1790 outb_p(0xFF, e8390_base + EN0_ISR);
1791 outb_p(0x00, e8390_base + EN0_IMR);
1793 /* Copy the station address into the DS8390 registers. */
1795 outb_p(E8390_NODMA + E8390_PAGE1 + E8390_STOP, e8390_base+E8390_CMD); /* 0x61 */
1796 for(i = 0; i < 6; i++)
1798 outb_p(dev->dev_addr[i], e8390_base + EN1_PHYS_SHIFT(i));
1799 if(inb_p(e8390_base + EN1_PHYS_SHIFT(i))!=dev->dev_addr[i])
1800 printk(KERN_ERR "Hw. address read/write mismap %d\n",i);
1803 outb_p(ei_local->rx_start_page, e8390_base + EN1_CURPAG);
1804 outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD);
1806 netif_start_queue(dev);
1807 ei_local->tx1 = ei_local->tx2 = 0;
1808 ei_local->txing = 0;
1812 outb_p(0xff, e8390_base + EN0_ISR);
1813 outb_p(ENISR_ALL, e8390_base + EN0_IMR);
1814 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, e8390_base+E8390_CMD);
1815 outb_p(E8390_TXCONFIG | info->duplex_flag,
1816 e8390_base + EN0_TXCR); /* xmit on. */
1817 /* 3c503 TechMan says rxconfig only after the NIC is started. */
1818 outb_p(E8390_RXCONFIG | 0x40, e8390_base + EN0_RXCR); /* rx on, */
1819 do_set_multicast_list(dev); /* (re)load the mcast table */
1823 /* Trigger a transmit start, assuming the length is valid.
1824 Always called with the page lock held */
1826 static void NS8390_trigger_send(struct net_device *dev, unsigned int length,
1829 long e8390_base = dev->base_addr;
1830 struct ei_device *ei_local __attribute((unused)) = (struct ei_device *) netdev_priv(dev);
1832 if (inb_p(e8390_base) & E8390_TRANS)
1834 printk(KERN_WARNING "%s: trigger_send() called with the transmitter busy.\n",
1838 outb_p(length & 0xff, e8390_base + EN0_TCNTLO);
1839 outb_p(length >> 8, e8390_base + EN0_TCNTHI);
1840 outb_p(start_page, e8390_base + EN0_TPSR);
1841 outb_p(E8390_NODMA+E8390_TRANS+E8390_START, e8390_base+E8390_CMD);