1 /*======================================================================
3 A PCMCIA ethernet driver for Asix AX88190-based cards
5 The Asix AX88190 is a NS8390-derived chipset with a few nasty
6 idiosyncracies that make it very inconvenient to support with a
7 standard 8390 driver. This driver is based on pcnet_cs, with the
8 tweaked 8390 code grafted on the end. Much of what I did was to
9 clean up and update a similar driver supplied by Asix, which was
10 adapted by William Lee, william@asix.com.tw.
12 Copyright (C) 2001 David A. Hinds -- dahinds@users.sourceforge.net
14 axnet_cs.c 1.28 2002/06/29 06:27:37
16 The network driver code is based on Donald Becker's NE2000 code:
18 Written 1992,1993 by Donald Becker.
19 Copyright 1993 United States Government as represented by the
20 Director, National Security Agency. This software may be used and
21 distributed according to the terms of the GNU General Public License,
22 incorporated herein by reference.
23 Donald Becker may be reached at becker@scyld.com
25 ======================================================================*/
27 #include <linux/kernel.h>
28 #include <linux/module.h>
29 #include <linux/init.h>
30 #include <linux/ptrace.h>
31 #include <linux/slab.h>
32 #include <linux/string.h>
33 #include <linux/timer.h>
34 #include <linux/delay.h>
35 #include <linux/spinlock.h>
36 #include <linux/ethtool.h>
37 #include <linux/netdevice.h>
38 #include <linux/crc32.h>
41 #include <pcmcia/cs_types.h>
42 #include <pcmcia/cs.h>
43 #include <pcmcia/cistpl.h>
44 #include <pcmcia/ciscode.h>
45 #include <pcmcia/ds.h>
46 #include <pcmcia/cisreg.h>
49 #include <asm/system.h>
50 #include <asm/byteorder.h>
51 #include <asm/uaccess.h>
53 #define AXNET_CMD 0x00
54 #define AXNET_DATAPORT 0x10 /* NatSemi-defined port window offset. */
55 #define AXNET_RESET 0x1f /* Issue a read to reset, a write to clear. */
56 #define AXNET_MII_EEP 0x14 /* Offset of MII access port */
57 #define AXNET_TEST 0x15 /* Offset of TEST Register port */
58 #define AXNET_GPIO 0x17 /* Offset of General Purpose Register Port */
60 #define AXNET_START_PG 0x40 /* First page of TX buffer */
61 #define AXNET_STOP_PG 0x80 /* Last page +1 of RX ring */
63 #define AXNET_RDC_TIMEOUT 0x02 /* Max wait in jiffies for Tx RDC */
65 #define IS_AX88190 0x0001
66 #define IS_AX88790 0x0002
68 /*====================================================================*/
70 /* Module parameters */
72 MODULE_AUTHOR("David Hinds <dahinds@users.sourceforge.net>");
73 MODULE_DESCRIPTION("Asix AX88190 PCMCIA ethernet driver");
74 MODULE_LICENSE("GPL");
77 #define INT_MODULE_PARM(n, v) static int n = v; module_param(n, int, 0)
79 INT_MODULE_PARM(pc_debug, PCMCIA_DEBUG);
80 #define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args)
81 static char *version =
82 "axnet_cs.c 1.28 2002/06/29 06:27:37 (David Hinds)";
84 #define DEBUG(n, args...)
87 /*====================================================================*/
89 static int axnet_config(struct pcmcia_device *link);
90 static void axnet_release(struct pcmcia_device *link);
91 static int axnet_open(struct net_device *dev);
92 static int axnet_close(struct net_device *dev);
93 static int axnet_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
94 static const struct ethtool_ops netdev_ethtool_ops;
95 static irqreturn_t ei_irq_wrapper(int irq, void *dev_id);
96 static void ei_watchdog(u_long arg);
97 static void axnet_reset_8390(struct net_device *dev);
99 static int mdio_read(unsigned int addr, int phy_id, int loc);
100 static void mdio_write(unsigned int addr, int phy_id, int loc, int value);
102 static void get_8390_hdr(struct net_device *,
103 struct e8390_pkt_hdr *, int);
104 static void block_input(struct net_device *dev, int count,
105 struct sk_buff *skb, int ring_offset);
106 static void block_output(struct net_device *dev, int count,
107 const u_char *buf, const int start_page);
109 static void axnet_detach(struct pcmcia_device *p_dev);
111 static void axdev_setup(struct net_device *dev);
112 static void AX88190_init(struct net_device *dev, int startp);
113 static int ax_open(struct net_device *dev);
114 static int ax_close(struct net_device *dev);
115 static irqreturn_t ax_interrupt(int irq, void *dev_id);
117 /*====================================================================*/
119 typedef struct axnet_dev_t {
120 struct pcmcia_device *p_dev;
123 struct timer_list watchdog;
124 int stale, fast_poll;
131 static inline axnet_dev_t *PRIV(struct net_device *dev)
133 void *p = (char *)netdev_priv(dev) + sizeof(struct ei_device);
137 /*======================================================================
139 axnet_attach() creates an "instance" of the driver, allocating
140 local data structures for one device. The device is registered
143 ======================================================================*/
145 static int axnet_probe(struct pcmcia_device *link)
148 struct net_device *dev;
150 DEBUG(0, "axnet_attach()\n");
152 dev = alloc_netdev(sizeof(struct ei_device) + sizeof(axnet_dev_t),
153 "eth%d", axdev_setup);
161 link->irq.Attributes = IRQ_TYPE_DYNAMIC_SHARING;
162 link->irq.IRQInfo1 = IRQ_LEVEL_ID;
163 link->conf.Attributes = CONF_ENABLE_IRQ;
164 link->conf.IntType = INT_MEMORY_AND_IO;
166 dev->open = &axnet_open;
167 dev->stop = &axnet_close;
168 dev->do_ioctl = &axnet_ioctl;
169 SET_ETHTOOL_OPS(dev, &netdev_ethtool_ops);
171 return axnet_config(link);
174 /*======================================================================
176 This deletes a driver "instance". The device is de-registered
177 with Card Services. If it has been released, all local data
178 structures are freed. Otherwise, the structures will be freed
179 when the device is released.
181 ======================================================================*/
183 static void axnet_detach(struct pcmcia_device *link)
185 struct net_device *dev = link->priv;
187 DEBUG(0, "axnet_detach(0x%p)\n", link);
190 unregister_netdev(dev);
197 /*======================================================================
199 This probes for a card's hardware address by reading the PROM.
201 ======================================================================*/
203 static int get_prom(struct pcmcia_device *link)
205 struct net_device *dev = link->priv;
206 unsigned int ioaddr = dev->base_addr;
209 /* This is based on drivers/net/ne.c */
211 u_char value, offset;
213 {E8390_NODMA+E8390_PAGE0+E8390_STOP, E8390_CMD}, /* Select page 0*/
214 {0x01, EN0_DCFG}, /* Set word-wide access. */
215 {0x00, EN0_RCNTLO}, /* Clear the count regs. */
217 {0x00, EN0_IMR}, /* Mask completion irq. */
219 {E8390_RXOFF|0x40, EN0_RXCR}, /* 0x60 Set to monitor */
220 {E8390_TXOFF, EN0_TXCR}, /* 0x02 and loopback mode. */
223 {0x00, EN0_RSARLO}, /* DMA starting at 0x0400. */
225 {E8390_RREAD+E8390_START, E8390_CMD},
228 /* Not much of a test, but the alternatives are messy */
229 if (link->conf.ConfigBase != 0x03c0)
232 axnet_reset_8390(dev);
235 for (i = 0; i < ARRAY_SIZE(program_seq); i++)
236 outb_p(program_seq[i].value, ioaddr + program_seq[i].offset);
238 for (i = 0; i < 6; i += 2) {
239 j = inw(ioaddr + AXNET_DATAPORT);
240 dev->dev_addr[i] = j & 0xff;
241 dev->dev_addr[i+1] = j >> 8;
246 /*======================================================================
248 axnet_config() is scheduled to run after a CARD_INSERTION event
249 is received, to configure the PCMCIA socket, and to make the
250 ethernet device available to the system.
252 ======================================================================*/
254 #define CS_CHECK(fn, ret) \
255 do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
257 static int try_io_port(struct pcmcia_device *link)
260 if (link->io.NumPorts1 == 32) {
261 link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;
262 if (link->io.NumPorts2 > 0) {
263 /* for master/slave multifunction cards */
264 link->io.Attributes2 = IO_DATA_PATH_WIDTH_8;
265 link->irq.Attributes =
266 IRQ_TYPE_DYNAMIC_SHARING|IRQ_FIRST_SHARED;
269 /* This should be two 16-port windows */
270 link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
271 link->io.Attributes2 = IO_DATA_PATH_WIDTH_16;
273 if (link->io.BasePort1 == 0) {
274 link->io.IOAddrLines = 16;
275 for (j = 0; j < 0x400; j += 0x20) {
276 link->io.BasePort1 = j ^ 0x300;
277 link->io.BasePort2 = (j ^ 0x300) + 0x10;
278 ret = pcmcia_request_io(link, &link->io);
279 if (ret == CS_SUCCESS) return ret;
283 return pcmcia_request_io(link, &link->io);
287 static int axnet_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;
295 DECLARE_MAC_BUF(mac);
297 DEBUG(0, "axnet_config(0x%p)\n", link);
299 tuple.Attributes = 0;
300 tuple.TupleData = (cisdata_t *)buf;
301 tuple.TupleDataMax = sizeof(buf);
302 tuple.TupleOffset = 0;
304 /* don't trust the CIS on this; Linksys got it wrong */
305 link->conf.Present = 0x63;
307 tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
308 tuple.Attributes = 0;
309 CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(link, &tuple));
310 while (last_ret == CS_SUCCESS) {
311 cistpl_cftable_entry_t *cfg = &(parse.cftable_entry);
312 cistpl_io_t *io = &(parse.cftable_entry.io);
314 if (pcmcia_get_tuple_data(link, &tuple) != 0 ||
315 pcmcia_parse_tuple(link, &tuple, &parse) != 0 ||
316 cfg->index == 0 || cfg->io.nwin == 0)
319 link->conf.ConfigIndex = 0x05;
320 /* For multifunction cards, by convention, we configure the
321 network function with window 0, and serial with window 1 */
323 i = (io->win[1].len > io->win[0].len);
324 link->io.BasePort2 = io->win[1-i].base;
325 link->io.NumPorts2 = io->win[1-i].len;
327 i = link->io.NumPorts2 = 0;
329 link->io.BasePort1 = io->win[i].base;
330 link->io.NumPorts1 = io->win[i].len;
331 link->io.IOAddrLines = io->flags & CISTPL_IO_LINES_MASK;
332 if (link->io.NumPorts1 + link->io.NumPorts2 >= 32) {
333 last_ret = try_io_port(link);
334 if (last_ret == CS_SUCCESS) break;
337 last_ret = pcmcia_get_next_tuple(link, &tuple);
339 if (last_ret != CS_SUCCESS) {
340 cs_error(link, RequestIO, last_ret);
344 CS_CHECK(RequestIRQ, pcmcia_request_irq(link, &link->irq));
346 if (link->io.NumPorts2 == 8) {
347 link->conf.Attributes |= CONF_ENABLE_SPKR;
348 link->conf.Status = CCSR_AUDIO_ENA;
351 CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link, &link->conf));
352 dev->irq = link->irq.AssignedIRQ;
353 dev->base_addr = link->io.BasePort1;
355 if (!get_prom(link)) {
356 printk(KERN_NOTICE "axnet_cs: this is not an AX88190 card!\n");
357 printk(KERN_NOTICE "axnet_cs: use pcnet_cs instead.\n");
361 ei_status.name = "AX88190";
362 ei_status.word16 = 1;
363 ei_status.tx_start_page = AXNET_START_PG;
364 ei_status.rx_start_page = AXNET_START_PG + TX_PAGES;
365 ei_status.stop_page = AXNET_STOP_PG;
366 ei_status.reset_8390 = &axnet_reset_8390;
367 ei_status.get_8390_hdr = &get_8390_hdr;
368 ei_status.block_input = &block_input;
369 ei_status.block_output = &block_output;
371 if (inb(dev->base_addr + AXNET_TEST) != 0)
372 info->flags |= IS_AX88790;
374 info->flags |= IS_AX88190;
376 if (info->flags & IS_AX88790)
377 outb(0x10, dev->base_addr + AXNET_GPIO); /* select Internal PHY */
379 for (i = 0; i < 32; i++) {
380 j = mdio_read(dev->base_addr + AXNET_MII_EEP, i, 1);
381 if ((j != 0) && (j != 0xffff)) break;
384 /* Maybe PHY is in power down mode. (PPD_SET = 1)
385 Bit 2 of CCSR is active low. */
387 conf_reg_t reg = { 0, CS_WRITE, CISREG_CCSR, 0x04 };
388 pcmcia_access_configuration_register(link, ®);
389 for (i = 0; i < 32; i++) {
390 j = mdio_read(dev->base_addr + AXNET_MII_EEP, i, 1);
391 if ((j != 0) && (j != 0xffff)) break;
395 info->phy_id = (i < 32) ? i : -1;
396 link->dev_node = &info->node;
397 SET_NETDEV_DEV(dev, &handle_to_dev(link));
399 if (register_netdev(dev) != 0) {
400 printk(KERN_NOTICE "axnet_cs: register_netdev() failed\n");
401 link->dev_node = NULL;
405 strcpy(info->node.dev_name, dev->name);
407 printk(KERN_INFO "%s: Asix AX88%d90: io %#3lx, irq %d, "
409 dev->name, ((info->flags & IS_AX88790) ? 7 : 1),
410 dev->base_addr, dev->irq,
411 print_mac(mac, dev->dev_addr));
412 if (info->phy_id != -1) {
413 DEBUG(0, " MII transceiver at index %d, status %x.\n", info->phy_id, j);
415 printk(KERN_NOTICE " No MII transceivers found!\n");
420 cs_error(link, last_fn, last_ret);
426 /*======================================================================
428 After a card is removed, axnet_release() will unregister the net
429 device, and release the PCMCIA configuration. If the device is
430 still open, this will be postponed until it is closed.
432 ======================================================================*/
434 static void axnet_release(struct pcmcia_device *link)
436 pcmcia_disable_device(link);
439 static int axnet_suspend(struct pcmcia_device *link)
441 struct net_device *dev = link->priv;
444 netif_device_detach(dev);
449 static int axnet_resume(struct pcmcia_device *link)
451 struct net_device *dev = link->priv;
454 axnet_reset_8390(dev);
455 AX88190_init(dev, 1);
456 netif_device_attach(dev);
463 /*======================================================================
465 MII interface support
467 ======================================================================*/
469 #define MDIO_SHIFT_CLK 0x01
470 #define MDIO_DATA_WRITE0 0x00
471 #define MDIO_DATA_WRITE1 0x08
472 #define MDIO_DATA_READ 0x04
473 #define MDIO_MASK 0x0f
474 #define MDIO_ENB_IN 0x02
476 static void mdio_sync(unsigned int addr)
479 for (bits = 0; bits < 32; bits++) {
480 outb_p(MDIO_DATA_WRITE1, addr);
481 outb_p(MDIO_DATA_WRITE1 | MDIO_SHIFT_CLK, addr);
485 static int mdio_read(unsigned int addr, int phy_id, int loc)
487 u_int cmd = (0xf6<<10)|(phy_id<<5)|loc;
491 for (i = 14; i >= 0; i--) {
492 int dat = (cmd&(1<<i)) ? MDIO_DATA_WRITE1 : MDIO_DATA_WRITE0;
494 outb_p(dat | MDIO_SHIFT_CLK, addr);
496 for (i = 19; i > 0; i--) {
497 outb_p(MDIO_ENB_IN, addr);
498 retval = (retval << 1) | ((inb_p(addr) & MDIO_DATA_READ) != 0);
499 outb_p(MDIO_ENB_IN | MDIO_SHIFT_CLK, addr);
501 return (retval>>1) & 0xffff;
504 static void mdio_write(unsigned int addr, int phy_id, int loc, int value)
506 u_int cmd = (0x05<<28)|(phy_id<<23)|(loc<<18)|(1<<17)|value;
510 for (i = 31; i >= 0; i--) {
511 int dat = (cmd&(1<<i)) ? MDIO_DATA_WRITE1 : MDIO_DATA_WRITE0;
513 outb_p(dat | MDIO_SHIFT_CLK, addr);
515 for (i = 1; i >= 0; i--) {
516 outb_p(MDIO_ENB_IN, addr);
517 outb_p(MDIO_ENB_IN | MDIO_SHIFT_CLK, addr);
521 /*====================================================================*/
523 static int axnet_open(struct net_device *dev)
526 axnet_dev_t *info = PRIV(dev);
527 struct pcmcia_device *link = info->p_dev;
528 unsigned int nic_base = dev->base_addr;
530 DEBUG(2, "axnet_open('%s')\n", dev->name);
532 if (!pcmcia_dev_present(link))
535 outb_p(0xFF, nic_base + EN0_ISR); /* Clear bogus intr. */
536 ret = request_irq(dev->irq, ei_irq_wrapper, IRQF_SHARED, "axnet_cs", dev);
542 info->link_status = 0x00;
543 init_timer(&info->watchdog);
544 info->watchdog.function = &ei_watchdog;
545 info->watchdog.data = (u_long)dev;
546 info->watchdog.expires = jiffies + HZ;
547 add_timer(&info->watchdog);
552 /*====================================================================*/
554 static int axnet_close(struct net_device *dev)
556 axnet_dev_t *info = PRIV(dev);
557 struct pcmcia_device *link = info->p_dev;
559 DEBUG(2, "axnet_close('%s')\n", dev->name);
562 free_irq(dev->irq, dev);
565 netif_stop_queue(dev);
566 del_timer_sync(&info->watchdog);
571 /*======================================================================
573 Hard reset the card. This used to pause for the same period that
574 a 8390 reset command required, but that shouldn't be necessary.
576 ======================================================================*/
578 static void axnet_reset_8390(struct net_device *dev)
580 unsigned int nic_base = dev->base_addr;
583 ei_status.txing = ei_status.dmaing = 0;
585 outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, nic_base + E8390_CMD);
587 outb(inb(nic_base + AXNET_RESET), nic_base + AXNET_RESET);
589 for (i = 0; i < 100; i++) {
590 if ((inb_p(nic_base+EN0_ISR) & ENISR_RESET) != 0)
594 outb_p(ENISR_RESET, nic_base + EN0_ISR); /* Ack intr. */
597 printk(KERN_ERR "%s: axnet_reset_8390() did not complete.\n",
600 } /* axnet_reset_8390 */
602 /*====================================================================*/
604 static irqreturn_t ei_irq_wrapper(int irq, void *dev_id)
606 struct net_device *dev = dev_id;
607 PRIV(dev)->stale = 0;
608 return ax_interrupt(irq, dev_id);
611 static void ei_watchdog(u_long arg)
613 struct net_device *dev = (struct net_device *)(arg);
614 axnet_dev_t *info = PRIV(dev);
615 unsigned int nic_base = dev->base_addr;
616 unsigned int mii_addr = nic_base + AXNET_MII_EEP;
619 if (!netif_device_present(dev)) goto reschedule;
621 /* Check for pending interrupt with expired latency timer: with
622 this, we can limp along even if the interrupt is blocked */
623 if (info->stale++ && (inb_p(nic_base + EN0_ISR) & ENISR_ALL)) {
624 if (!info->fast_poll)
625 printk(KERN_INFO "%s: interrupt(s) dropped!\n", dev->name);
626 ei_irq_wrapper(dev->irq, dev);
627 info->fast_poll = HZ;
629 if (info->fast_poll) {
631 info->watchdog.expires = jiffies + 1;
632 add_timer(&info->watchdog);
636 if (info->phy_id < 0)
638 link = mdio_read(mii_addr, info->phy_id, 1);
639 if (!link || (link == 0xffff)) {
640 printk(KERN_INFO "%s: MII is missing!\n", dev->name);
646 if (link != info->link_status) {
647 u_short p = mdio_read(mii_addr, info->phy_id, 5);
648 printk(KERN_INFO "%s: %s link beat\n", dev->name,
649 (link) ? "found" : "lost");
651 info->duplex_flag = (p & 0x0140) ? 0x80 : 0x00;
653 printk(KERN_INFO "%s: autonegotiation complete: "
654 "%sbaseT-%cD selected\n", dev->name,
655 ((p & 0x0180) ? "100" : "10"),
656 ((p & 0x0140) ? 'F' : 'H'));
658 printk(KERN_INFO "%s: link partner did not autonegotiate\n",
660 AX88190_init(dev, 1);
662 info->link_status = link;
666 info->watchdog.expires = jiffies + HZ;
667 add_timer(&info->watchdog);
670 static void netdev_get_drvinfo(struct net_device *dev,
671 struct ethtool_drvinfo *info)
673 strcpy(info->driver, "axnet_cs");
676 static const struct ethtool_ops netdev_ethtool_ops = {
677 .get_drvinfo = netdev_get_drvinfo,
680 /*====================================================================*/
682 static int axnet_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
684 axnet_dev_t *info = PRIV(dev);
685 u16 *data = (u16 *)&rq->ifr_ifru;
686 unsigned int mii_addr = dev->base_addr + AXNET_MII_EEP;
689 data[0] = info->phy_id;
690 case SIOCGMIIREG: /* Read MII PHY register. */
691 data[3] = mdio_read(mii_addr, data[0], data[1] & 0x1f);
693 case SIOCSMIIREG: /* Write MII PHY register. */
694 if (!capable(CAP_NET_ADMIN))
696 mdio_write(mii_addr, data[0], data[1] & 0x1f, data[2]);
702 /*====================================================================*/
704 static void get_8390_hdr(struct net_device *dev,
705 struct e8390_pkt_hdr *hdr,
708 unsigned int nic_base = dev->base_addr;
710 outb_p(0, nic_base + EN0_RSARLO); /* On page boundary */
711 outb_p(ring_page, nic_base + EN0_RSARHI);
712 outb_p(E8390_RREAD+E8390_START, nic_base + AXNET_CMD);
714 insw(nic_base + AXNET_DATAPORT, hdr,
715 sizeof(struct e8390_pkt_hdr)>>1);
716 /* Fix for big endian systems */
717 hdr->count = le16_to_cpu(hdr->count);
721 /*====================================================================*/
723 static void block_input(struct net_device *dev, int count,
724 struct sk_buff *skb, int ring_offset)
726 unsigned int nic_base = dev->base_addr;
727 int xfer_count = count;
728 char *buf = skb->data;
731 if ((ei_debug > 4) && (count != 4))
732 printk(KERN_DEBUG "%s: [bi=%d]\n", dev->name, count+4);
734 outb_p(ring_offset & 0xff, nic_base + EN0_RSARLO);
735 outb_p(ring_offset >> 8, nic_base + EN0_RSARHI);
736 outb_p(E8390_RREAD+E8390_START, nic_base + AXNET_CMD);
738 insw(nic_base + AXNET_DATAPORT,buf,count>>1);
740 buf[count-1] = inb(nic_base + AXNET_DATAPORT), xfer_count++;
744 /*====================================================================*/
746 static void block_output(struct net_device *dev, int count,
747 const u_char *buf, const int start_page)
749 unsigned int nic_base = dev->base_addr;
753 printk(KERN_DEBUG "%s: [bo=%d]\n", dev->name, count);
756 /* Round the count up for word writes. Do we need to do this?
757 What effect will an odd byte count have on the 8390?
758 I should check someday. */
762 outb_p(0x00, nic_base + EN0_RSARLO);
763 outb_p(start_page, nic_base + EN0_RSARHI);
764 outb_p(E8390_RWRITE+E8390_START, nic_base + AXNET_CMD);
765 outsw(nic_base + AXNET_DATAPORT, buf, count>>1);
768 static struct pcmcia_device_id axnet_ids[] = {
769 PCMCIA_PFC_DEVICE_MANF_CARD(0, 0x016c, 0x0081),
770 PCMCIA_DEVICE_MANF_CARD(0x018a, 0x0301),
771 PCMCIA_DEVICE_MANF_CARD(0x026f, 0x0301),
772 PCMCIA_DEVICE_MANF_CARD(0x026f, 0x0303),
773 PCMCIA_DEVICE_MANF_CARD(0x026f, 0x0309),
774 PCMCIA_DEVICE_MANF_CARD(0x0274, 0x1106),
775 PCMCIA_DEVICE_MANF_CARD(0x8a01, 0xc1ab),
776 PCMCIA_DEVICE_MANF_CARD(0x021b, 0x0202),
777 PCMCIA_DEVICE_MANF_CARD(0xffff, 0x1090),
778 PCMCIA_DEVICE_PROD_ID12("AmbiCom,Inc.", "Fast Ethernet PC Card(AMB8110)", 0x49b020a7, 0x119cc9fc),
779 PCMCIA_DEVICE_PROD_ID124("Fast Ethernet", "16-bit PC Card", "AX88190", 0xb4be14e3, 0x9a12eb6a, 0xab9be5ef),
780 PCMCIA_DEVICE_PROD_ID12("ASIX", "AX88190", 0x0959823b, 0xab9be5ef),
781 PCMCIA_DEVICE_PROD_ID12("Billionton", "LNA-100B", 0x552ab682, 0xbc3b87e1),
782 PCMCIA_DEVICE_PROD_ID12("CHEETAH ETHERCARD", "EN2228", 0x00fa7bc8, 0x00e990cc),
783 PCMCIA_DEVICE_PROD_ID12("CNet", "CNF301", 0xbc477dde, 0x78c5f40b),
784 PCMCIA_DEVICE_PROD_ID12("corega K.K.", "corega FEther PCC-TXD", 0x5261440f, 0x436768c5),
785 PCMCIA_DEVICE_PROD_ID12("corega K.K.", "corega FEtherII PCC-TXD", 0x5261440f, 0x730df72e),
786 PCMCIA_DEVICE_PROD_ID12("Dynalink", "L100C16", 0x55632fd5, 0x66bc2a90),
787 PCMCIA_DEVICE_PROD_ID12("Linksys", "EtherFast 10/100 PC Card (PCMPC100 V3)", 0x0733cc81, 0x232019a8),
788 PCMCIA_DEVICE_PROD_ID12("MELCO", "LPC3-TX", 0x481e0094, 0xf91af609),
789 PCMCIA_DEVICE_PROD_ID12("PCMCIA", "100BASE", 0x281f1c5d, 0x7c2add04),
790 PCMCIA_DEVICE_PROD_ID12("PCMCIA", "FastEtherCard", 0x281f1c5d, 0x7ef26116),
791 PCMCIA_DEVICE_PROD_ID12("PCMCIA", "FEP501", 0x281f1c5d, 0x2e272058),
792 PCMCIA_DEVICE_PROD_ID14("Network Everywhere", "AX88190", 0x820a67b6, 0xab9be5ef),
795 MODULE_DEVICE_TABLE(pcmcia, axnet_ids);
797 static struct pcmcia_driver axnet_cs_driver = {
798 .owner = THIS_MODULE,
802 .probe = axnet_probe,
803 .remove = axnet_detach,
804 .id_table = axnet_ids,
805 .suspend = axnet_suspend,
806 .resume = axnet_resume,
809 static int __init init_axnet_cs(void)
811 return pcmcia_register_driver(&axnet_cs_driver);
814 static void __exit exit_axnet_cs(void)
816 pcmcia_unregister_driver(&axnet_cs_driver);
819 module_init(init_axnet_cs);
820 module_exit(exit_axnet_cs);
822 /*====================================================================*/
824 /* 8390.c: A general NS8390 ethernet driver core for linux. */
826 Written 1992-94 by Donald Becker.
828 Copyright 1993 United States Government as represented by the
829 Director, National Security Agency.
831 This software may be used and distributed according to the terms
832 of the GNU General Public License, incorporated herein by reference.
834 The author may be reached as becker@scyld.com, or C/O
835 Scyld Computing Corporation
836 410 Severn Ave., Suite 210
839 This is the chip-specific code for many 8390-based ethernet adaptors.
840 This is not a complete driver, it must be combined with board-specific
841 code such as ne.c, wd.c, 3c503.c, etc.
843 Seeing how at least eight drivers use this code, (not counting the
844 PCMCIA ones either) it is easy to break some card by what seems like
845 a simple innocent change. Please contact me or Donald if you think
846 you have found something that needs changing. -- PG
850 Paul Gortmaker : remove set_bit lock, other cleanups.
851 Paul Gortmaker : add ei_get_8390_hdr() so we can pass skb's to
852 ei_block_input() for eth_io_copy_and_sum().
853 Paul Gortmaker : exchange static int ei_pingpong for a #define,
854 also add better Tx error handling.
855 Paul Gortmaker : rewrite Rx overrun handling as per NS specs.
856 Alexey Kuznetsov : use the 8390's six bit hash multicast filter.
857 Paul Gortmaker : tweak ANK's above multicast changes a bit.
858 Paul Gortmaker : update packet statistics for v2.1.x
859 Alan Cox : support arbitary stupid port mappings on the
860 68K Macintosh. Support >16bit I/O spaces
861 Paul Gortmaker : add kmod support for auto-loading of the 8390
862 module by all drivers that require it.
863 Alan Cox : Spinlocking work, added 'BUG_83C690'
864 Paul Gortmaker : Separate out Tx timeout code from Tx path.
867 The National Semiconductor LAN Databook, and the 3Com 3c503 databook.
871 static const char *version_8390 =
872 "8390.c:v1.10cvs 9/23/94 Donald Becker (becker@scyld.com)\n";
874 #include <linux/bitops.h>
876 #include <linux/fcntl.h>
877 #include <linux/in.h>
878 #include <linux/interrupt.h>
880 #include <linux/etherdevice.h>
884 /* These are the operational function interfaces to board-specific
886 void reset_8390(struct net_device *dev)
887 Resets the board associated with DEV, including a hardware reset of
888 the 8390. This is only called when there is a transmit timeout, and
889 it is always followed by 8390_init().
890 void block_output(struct net_device *dev, int count, const unsigned char *buf,
892 Write the COUNT bytes of BUF to the packet buffer at START_PAGE. The
893 "page" value uses the 8390's 256-byte pages.
894 void get_8390_hdr(struct net_device *dev, struct e8390_hdr *hdr, int ring_page)
895 Read the 4 byte, page aligned 8390 header. *If* there is a
896 subsequent read, it will be of the rest of the packet.
897 void block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset)
898 Read COUNT bytes from the packet buffer into the skb data area. Start
899 reading from RING_OFFSET, the address as the 8390 sees it. This will always
900 follow the read of the 8390 header.
902 #define ei_reset_8390 (ei_local->reset_8390)
903 #define ei_block_output (ei_local->block_output)
904 #define ei_block_input (ei_local->block_input)
905 #define ei_get_8390_hdr (ei_local->get_8390_hdr)
907 /* use 0 for production, 1 for verification, >2 for debug */
912 /* Index to functions. */
913 static void ei_tx_intr(struct net_device *dev);
914 static void ei_tx_err(struct net_device *dev);
915 static void ei_tx_timeout(struct net_device *dev);
916 static void ei_receive(struct net_device *dev);
917 static void ei_rx_overrun(struct net_device *dev);
919 /* Routines generic to NS8390-based boards. */
920 static void NS8390_trigger_send(struct net_device *dev, unsigned int length,
922 static void set_multicast_list(struct net_device *dev);
923 static void do_set_multicast_list(struct net_device *dev);
926 * SMP and the 8390 setup.
928 * The 8390 isnt exactly designed to be multithreaded on RX/TX. There is
929 * a page register that controls bank and packet buffer access. We guard
930 * this with ei_local->page_lock. Nobody should assume or set the page other
931 * than zero when the lock is not held. Lock holders must restore page 0
932 * before unlocking. Even pure readers must take the lock to protect in
935 * To make life difficult the chip can also be very slow. We therefore can't
936 * just use spinlocks. For the longer lockups we disable the irq the device
937 * sits on and hold the lock. We must hold the lock because there is a dual
938 * processor case other than interrupts (get stats/set multicast list in
939 * parallel with each other and transmit).
941 * Note: in theory we can just disable the irq on the card _but_ there is
942 * a latency on SMP irq delivery. So we can easily go "disable irq" "sync irqs"
943 * enter lock, take the queued irq. So we waddle instead of flying.
945 * Finally by special arrangement for the purpose of being generally
946 * annoying the transmit function is called bh atomic. That places
947 * restrictions on the user context callers as disable_irq won't save
952 * ax_open - Open/initialize the board.
953 * @dev: network device to initialize
955 * This routine goes all-out, setting everything
956 * up anew at each open, even though many of these registers should only
957 * need to be set once at boot.
959 static int ax_open(struct net_device *dev)
962 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
964 #ifdef HAVE_TX_TIMEOUT
965 /* The card I/O part of the driver (e.g. 3c503) can hook a Tx timeout
966 wrapper that does e.g. media check & then calls ei_tx_timeout. */
967 if (dev->tx_timeout == NULL)
968 dev->tx_timeout = ei_tx_timeout;
969 if (dev->watchdog_timeo <= 0)
970 dev->watchdog_timeo = TX_TIMEOUT;
974 * Grab the page lock so we own the register set, then call
978 spin_lock_irqsave(&ei_local->page_lock, flags);
979 AX88190_init(dev, 1);
980 /* Set the flag before we drop the lock, That way the IRQ arrives
981 after its set and we get no silly warnings */
982 netif_start_queue(dev);
983 spin_unlock_irqrestore(&ei_local->page_lock, flags);
984 ei_local->irqlock = 0;
988 #define dev_lock(dev) (((struct ei_device *)netdev_priv(dev))->page_lock)
991 * ax_close - shut down network device
992 * @dev: network device to close
994 * Opposite of ax_open(). Only used when "ifconfig <devname> down" is done.
996 static int ax_close(struct net_device *dev)
1001 * Hold the page lock during close
1004 spin_lock_irqsave(&dev_lock(dev), flags);
1005 AX88190_init(dev, 0);
1006 spin_unlock_irqrestore(&dev_lock(dev), flags);
1007 netif_stop_queue(dev);
1012 * ei_tx_timeout - handle transmit time out condition
1013 * @dev: network device which has apparently fallen asleep
1015 * Called by kernel when device never acknowledges a transmit has
1016 * completed (or failed) - i.e. never posted a Tx related interrupt.
1019 static void ei_tx_timeout(struct net_device *dev)
1021 long e8390_base = dev->base_addr;
1022 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1023 int txsr, isr, tickssofar = jiffies - dev->trans_start;
1024 unsigned long flags;
1026 dev->stats.tx_errors++;
1028 spin_lock_irqsave(&ei_local->page_lock, flags);
1029 txsr = inb(e8390_base+EN0_TSR);
1030 isr = inb(e8390_base+EN0_ISR);
1031 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1033 printk(KERN_DEBUG "%s: Tx timed out, %s TSR=%#2x, ISR=%#2x, t=%d.\n",
1034 dev->name, (txsr & ENTSR_ABT) ? "excess collisions." :
1035 (isr) ? "lost interrupt?" : "cable problem?", txsr, isr, tickssofar);
1037 if (!isr && !dev->stats.tx_packets)
1039 /* The 8390 probably hasn't gotten on the cable yet. */
1040 ei_local->interface_num ^= 1; /* Try a different xcvr. */
1043 /* Ugly but a reset can be slow, yet must be protected */
1045 spin_lock_irqsave(&ei_local->page_lock, flags);
1047 /* Try to restart the card. Perhaps the user has fixed something. */
1049 AX88190_init(dev, 1);
1051 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1052 netif_wake_queue(dev);
1056 * ei_start_xmit - begin packet transmission
1057 * @skb: packet to be sent
1058 * @dev: network device to which packet is sent
1060 * Sends a packet to an 8390 network device.
1063 static int ei_start_xmit(struct sk_buff *skb, struct net_device *dev)
1065 long e8390_base = dev->base_addr;
1066 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1067 int length, send_length, output_page;
1068 unsigned long flags;
1069 u8 packet[ETH_ZLEN];
1071 netif_stop_queue(dev);
1075 /* Mask interrupts from the ethercard.
1076 SMP: We have to grab the lock here otherwise the IRQ handler
1077 on another CPU can flip window and race the IRQ mask set. We end
1078 up trashing the mcast filter not disabling irqs if we don't lock */
1080 spin_lock_irqsave(&ei_local->page_lock, flags);
1081 outb_p(0x00, e8390_base + EN0_IMR);
1082 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1085 * Slow phase with lock held.
1088 spin_lock_irqsave(&ei_local->page_lock, flags);
1090 ei_local->irqlock = 1;
1092 send_length = max(length, ETH_ZLEN);
1095 * We have two Tx slots available for use. Find the first free
1096 * slot, and then perform some sanity checks. With two Tx bufs,
1097 * you get very close to transmitting back-to-back packets. With
1098 * only one Tx buf, the transmitter sits idle while you reload the
1099 * card, leaving a substantial gap between each transmitted packet.
1102 if (ei_local->tx1 == 0)
1104 output_page = ei_local->tx_start_page;
1105 ei_local->tx1 = send_length;
1106 if (ei_debug && ei_local->tx2 > 0)
1107 printk(KERN_DEBUG "%s: idle transmitter tx2=%d, lasttx=%d, txing=%d.\n",
1108 dev->name, ei_local->tx2, ei_local->lasttx, ei_local->txing);
1110 else if (ei_local->tx2 == 0)
1112 output_page = ei_local->tx_start_page + TX_PAGES/2;
1113 ei_local->tx2 = send_length;
1114 if (ei_debug && ei_local->tx1 > 0)
1115 printk(KERN_DEBUG "%s: idle transmitter, tx1=%d, lasttx=%d, txing=%d.\n",
1116 dev->name, ei_local->tx1, ei_local->lasttx, ei_local->txing);
1119 { /* We should never get here. */
1121 printk(KERN_DEBUG "%s: No Tx buffers free! tx1=%d tx2=%d last=%d\n",
1122 dev->name, ei_local->tx1, ei_local->tx2, ei_local->lasttx);
1123 ei_local->irqlock = 0;
1124 netif_stop_queue(dev);
1125 outb_p(ENISR_ALL, e8390_base + EN0_IMR);
1126 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1127 dev->stats.tx_errors++;
1132 * Okay, now upload the packet and trigger a send if the transmitter
1133 * isn't already sending. If it is busy, the interrupt handler will
1134 * trigger the send later, upon receiving a Tx done interrupt.
1137 if (length == skb->len)
1138 ei_block_output(dev, length, skb->data, output_page);
1140 memset(packet, 0, ETH_ZLEN);
1141 skb_copy_from_linear_data(skb, packet, skb->len);
1142 ei_block_output(dev, length, packet, output_page);
1145 if (! ei_local->txing)
1147 ei_local->txing = 1;
1148 NS8390_trigger_send(dev, send_length, output_page);
1149 dev->trans_start = jiffies;
1150 if (output_page == ei_local->tx_start_page)
1153 ei_local->lasttx = -1;
1158 ei_local->lasttx = -2;
1161 else ei_local->txqueue++;
1163 if (ei_local->tx1 && ei_local->tx2)
1164 netif_stop_queue(dev);
1166 netif_start_queue(dev);
1168 /* Turn 8390 interrupts back on. */
1169 ei_local->irqlock = 0;
1170 outb_p(ENISR_ALL, e8390_base + EN0_IMR);
1172 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1174 dev_kfree_skb (skb);
1175 dev->stats.tx_bytes += send_length;
1181 * ax_interrupt - handle the interrupts from an 8390
1182 * @irq: interrupt number
1183 * @dev_id: a pointer to the net_device
1186 * Handle the ether interface interrupts. We pull packets from
1187 * the 8390 via the card specific functions and fire them at the networking
1188 * stack. We also handle transmit completions and wake the transmit path if
1189 * necessary. We also update the counters and do other housekeeping as
1193 static irqreturn_t ax_interrupt(int irq, void *dev_id)
1195 struct net_device *dev = dev_id;
1197 int interrupts, nr_serviced = 0, i;
1198 struct ei_device *ei_local;
1201 e8390_base = dev->base_addr;
1202 ei_local = netdev_priv(dev);
1205 * Protect the irq test too.
1208 spin_lock(&ei_local->page_lock);
1210 if (ei_local->irqlock)
1212 #if 1 /* This might just be an interrupt for a PCI device sharing this line */
1213 /* The "irqlock" check is only for testing. */
1214 printk(ei_local->irqlock
1215 ? "%s: Interrupted while interrupts are masked! isr=%#2x imr=%#2x.\n"
1216 : "%s: Reentering the interrupt handler! isr=%#2x imr=%#2x.\n",
1217 dev->name, inb_p(e8390_base + EN0_ISR),
1218 inb_p(e8390_base + EN0_IMR));
1220 spin_unlock(&ei_local->page_lock);
1225 printk(KERN_DEBUG "%s: interrupt(isr=%#2.2x).\n", dev->name,
1226 inb_p(e8390_base + EN0_ISR));
1228 outb_p(0x00, e8390_base + EN0_ISR);
1229 ei_local->irqlock = 1;
1231 /* !!Assumption!! -- we stay in page 0. Don't break this. */
1232 while ((interrupts = inb_p(e8390_base + EN0_ISR)) != 0
1233 && ++nr_serviced < MAX_SERVICE)
1235 if (!netif_running(dev) || (interrupts == 0xff)) {
1237 printk(KERN_WARNING "%s: interrupt from stopped card\n", dev->name);
1238 outb_p(interrupts, e8390_base + EN0_ISR);
1244 /* AX88190 bug fix. */
1245 outb_p(interrupts, e8390_base + EN0_ISR);
1246 for (i = 0; i < 10; i++) {
1247 if (!(inb(e8390_base + EN0_ISR) & interrupts))
1249 outb_p(0, e8390_base + EN0_ISR);
1250 outb_p(interrupts, e8390_base + EN0_ISR);
1252 if (interrupts & ENISR_OVER)
1254 else if (interrupts & (ENISR_RX+ENISR_RX_ERR))
1256 /* Got a good (?) packet. */
1259 /* Push the next to-transmit packet through. */
1260 if (interrupts & ENISR_TX)
1262 else if (interrupts & ENISR_TX_ERR)
1265 if (interrupts & ENISR_COUNTERS)
1267 dev->stats.rx_frame_errors += inb_p(e8390_base + EN0_COUNTER0);
1268 dev->stats.rx_crc_errors += inb_p(e8390_base + EN0_COUNTER1);
1269 dev->stats.rx_missed_errors+= inb_p(e8390_base + EN0_COUNTER2);
1273 if (interrupts && ei_debug > 3)
1276 if (nr_serviced >= MAX_SERVICE)
1278 /* 0xFF is valid for a card removal */
1279 if(interrupts!=0xFF)
1280 printk(KERN_WARNING "%s: Too much work at interrupt, status %#2.2x\n",
1281 dev->name, interrupts);
1282 outb_p(ENISR_ALL, e8390_base + EN0_ISR); /* Ack. most intrs. */
1284 printk(KERN_WARNING "%s: unknown interrupt %#2x\n", dev->name, interrupts);
1285 outb_p(0xff, e8390_base + EN0_ISR); /* Ack. all intrs. */
1289 /* Turn 8390 interrupts back on. */
1290 ei_local->irqlock = 0;
1291 outb_p(ENISR_ALL, e8390_base + EN0_IMR);
1293 spin_unlock(&ei_local->page_lock);
1294 return IRQ_RETVAL(handled);
1298 * ei_tx_err - handle transmitter error
1299 * @dev: network device which threw the exception
1301 * A transmitter error has happened. Most likely excess collisions (which
1302 * is a fairly normal condition). If the error is one where the Tx will
1303 * have been aborted, we try and send another one right away, instead of
1304 * letting the failed packet sit and collect dust in the Tx buffer. This
1305 * is a much better solution as it avoids kernel based Tx timeouts, and
1306 * an unnecessary card reset.
1308 * Called with lock held.
1311 static void ei_tx_err(struct net_device *dev)
1313 long e8390_base = dev->base_addr;
1314 unsigned char txsr = inb_p(e8390_base+EN0_TSR);
1315 unsigned char tx_was_aborted = txsr & (ENTSR_ABT+ENTSR_FU);
1317 #ifdef VERBOSE_ERROR_DUMP
1318 printk(KERN_DEBUG "%s: transmitter error (%#2x): ", dev->name, txsr);
1319 if (txsr & ENTSR_ABT)
1320 printk("excess-collisions ");
1321 if (txsr & ENTSR_ND)
1322 printk("non-deferral ");
1323 if (txsr & ENTSR_CRS)
1324 printk("lost-carrier ");
1325 if (txsr & ENTSR_FU)
1326 printk("FIFO-underrun ");
1327 if (txsr & ENTSR_CDH)
1328 printk("lost-heartbeat ");
1336 dev->stats.tx_errors++;
1337 if (txsr & ENTSR_CRS) dev->stats.tx_carrier_errors++;
1338 if (txsr & ENTSR_CDH) dev->stats.tx_heartbeat_errors++;
1339 if (txsr & ENTSR_OWC) dev->stats.tx_window_errors++;
1344 * ei_tx_intr - transmit interrupt handler
1345 * @dev: network device for which tx intr is handled
1347 * We have finished a transmit: check for errors and then trigger the next
1348 * packet to be sent. Called with lock held.
1351 static void ei_tx_intr(struct net_device *dev)
1353 long e8390_base = dev->base_addr;
1354 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1355 int status = inb(e8390_base + EN0_TSR);
1358 * There are two Tx buffers, see which one finished, and trigger
1359 * the send of another one if it exists.
1361 ei_local->txqueue--;
1363 if (ei_local->tx1 < 0)
1365 if (ei_local->lasttx != 1 && ei_local->lasttx != -1)
1366 printk(KERN_ERR "%s: bogus last_tx_buffer %d, tx1=%d.\n",
1367 ei_local->name, ei_local->lasttx, ei_local->tx1);
1369 if (ei_local->tx2 > 0)
1371 ei_local->txing = 1;
1372 NS8390_trigger_send(dev, ei_local->tx2, ei_local->tx_start_page + 6);
1373 dev->trans_start = jiffies;
1375 ei_local->lasttx = 2;
1377 else ei_local->lasttx = 20, ei_local->txing = 0;
1379 else if (ei_local->tx2 < 0)
1381 if (ei_local->lasttx != 2 && ei_local->lasttx != -2)
1382 printk("%s: bogus last_tx_buffer %d, tx2=%d.\n",
1383 ei_local->name, ei_local->lasttx, ei_local->tx2);
1385 if (ei_local->tx1 > 0)
1387 ei_local->txing = 1;
1388 NS8390_trigger_send(dev, ei_local->tx1, ei_local->tx_start_page);
1389 dev->trans_start = jiffies;
1391 ei_local->lasttx = 1;
1394 ei_local->lasttx = 10, ei_local->txing = 0;
1396 // else printk(KERN_WARNING "%s: unexpected TX-done interrupt, lasttx=%d.\n",
1397 // dev->name, ei_local->lasttx);
1399 /* Minimize Tx latency: update the statistics after we restart TXing. */
1400 if (status & ENTSR_COL)
1401 dev->stats.collisions++;
1402 if (status & ENTSR_PTX)
1403 dev->stats.tx_packets++;
1406 dev->stats.tx_errors++;
1407 if (status & ENTSR_ABT)
1409 dev->stats.tx_aborted_errors++;
1410 dev->stats.collisions += 16;
1412 if (status & ENTSR_CRS)
1413 dev->stats.tx_carrier_errors++;
1414 if (status & ENTSR_FU)
1415 dev->stats.tx_fifo_errors++;
1416 if (status & ENTSR_CDH)
1417 dev->stats.tx_heartbeat_errors++;
1418 if (status & ENTSR_OWC)
1419 dev->stats.tx_window_errors++;
1421 netif_wake_queue(dev);
1425 * ei_receive - receive some packets
1426 * @dev: network device with which receive will be run
1428 * We have a good packet(s), get it/them out of the buffers.
1429 * Called with lock held.
1432 static void ei_receive(struct net_device *dev)
1434 long e8390_base = dev->base_addr;
1435 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1436 unsigned char rxing_page, this_frame, next_frame;
1437 unsigned short current_offset;
1438 int rx_pkt_count = 0;
1439 struct e8390_pkt_hdr rx_frame;
1441 while (++rx_pkt_count < 10)
1443 int pkt_len, pkt_stat;
1445 /* Get the rx page (incoming packet pointer). */
1446 rxing_page = inb_p(e8390_base + EN1_CURPAG -1);
1448 /* Remove one frame from the ring. Boundary is always a page behind. */
1449 this_frame = inb_p(e8390_base + EN0_BOUNDARY) + 1;
1450 if (this_frame >= ei_local->stop_page)
1451 this_frame = ei_local->rx_start_page;
1453 /* Someday we'll omit the previous, iff we never get this message.
1454 (There is at least one clone claimed to have a problem.)
1456 Keep quiet if it looks like a card removal. One problem here
1457 is that some clones crash in roughly the same way.
1459 if (ei_debug > 0 && this_frame != ei_local->current_page && (this_frame!=0x0 || rxing_page!=0xFF))
1460 printk(KERN_ERR "%s: mismatched read page pointers %2x vs %2x.\n",
1461 dev->name, this_frame, ei_local->current_page);
1463 if (this_frame == rxing_page) /* Read all the frames? */
1464 break; /* Done for now */
1466 current_offset = this_frame << 8;
1467 ei_get_8390_hdr(dev, &rx_frame, this_frame);
1469 pkt_len = rx_frame.count - sizeof(struct e8390_pkt_hdr);
1470 pkt_stat = rx_frame.status;
1472 next_frame = this_frame + 1 + ((pkt_len+4)>>8);
1474 if (pkt_len < 60 || pkt_len > 1518)
1477 printk(KERN_DEBUG "%s: bogus packet size: %d, status=%#2x nxpg=%#2x.\n",
1478 dev->name, rx_frame.count, rx_frame.status,
1480 dev->stats.rx_errors++;
1481 dev->stats.rx_length_errors++;
1483 else if ((pkt_stat & 0x0F) == ENRSR_RXOK)
1485 struct sk_buff *skb;
1487 skb = dev_alloc_skb(pkt_len+2);
1491 printk(KERN_DEBUG "%s: Couldn't allocate a sk_buff of size %d.\n",
1492 dev->name, pkt_len);
1493 dev->stats.rx_dropped++;
1498 skb_reserve(skb,2); /* IP headers on 16 byte boundaries */
1499 skb_put(skb, pkt_len); /* Make room */
1500 ei_block_input(dev, pkt_len, skb, current_offset + sizeof(rx_frame));
1501 skb->protocol=eth_type_trans(skb,dev);
1503 dev->last_rx = jiffies;
1504 dev->stats.rx_packets++;
1505 dev->stats.rx_bytes += pkt_len;
1506 if (pkt_stat & ENRSR_PHY)
1507 dev->stats.multicast++;
1513 printk(KERN_DEBUG "%s: bogus packet: status=%#2x nxpg=%#2x size=%d\n",
1514 dev->name, rx_frame.status, rx_frame.next,
1516 dev->stats.rx_errors++;
1517 /* NB: The NIC counts CRC, frame and missed errors. */
1518 if (pkt_stat & ENRSR_FO)
1519 dev->stats.rx_fifo_errors++;
1521 next_frame = rx_frame.next;
1523 /* This _should_ never happen: it's here for avoiding bad clones. */
1524 if (next_frame >= ei_local->stop_page) {
1525 printk("%s: next frame inconsistency, %#2x\n", dev->name,
1527 next_frame = ei_local->rx_start_page;
1529 ei_local->current_page = next_frame;
1530 outb_p(next_frame-1, e8390_base+EN0_BOUNDARY);
1537 * ei_rx_overrun - handle receiver overrun
1538 * @dev: network device which threw exception
1540 * We have a receiver overrun: we have to kick the 8390 to get it started
1541 * again. Problem is that you have to kick it exactly as NS prescribes in
1542 * the updated datasheets, or "the NIC may act in an unpredictable manner."
1543 * This includes causing "the NIC to defer indefinitely when it is stopped
1544 * on a busy network." Ugh.
1545 * Called with lock held. Don't call this with the interrupts off or your
1546 * computer will hate you - it takes 10ms or so.
1549 static void ei_rx_overrun(struct net_device *dev)
1551 axnet_dev_t *info = PRIV(dev);
1552 long e8390_base = dev->base_addr;
1553 unsigned char was_txing, must_resend = 0;
1556 * Record whether a Tx was in progress and then issue the
1559 was_txing = inb_p(e8390_base+E8390_CMD) & E8390_TRANS;
1560 outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD);
1563 printk(KERN_DEBUG "%s: Receiver overrun.\n", dev->name);
1564 dev->stats.rx_over_errors++;
1567 * Wait a full Tx time (1.2ms) + some guard time, NS says 1.6ms total.
1568 * Early datasheets said to poll the reset bit, but now they say that
1569 * it "is not a reliable indicator and subsequently should be ignored."
1570 * We wait at least 10ms.
1576 * Reset RBCR[01] back to zero as per magic incantation.
1578 outb_p(0x00, e8390_base+EN0_RCNTLO);
1579 outb_p(0x00, e8390_base+EN0_RCNTHI);
1582 * See if any Tx was interrupted or not. According to NS, this
1583 * step is vital, and skipping it will cause no end of havoc.
1588 unsigned char tx_completed = inb_p(e8390_base+EN0_ISR) & (ENISR_TX+ENISR_TX_ERR);
1594 * Have to enter loopback mode and then restart the NIC before
1595 * you are allowed to slurp packets up off the ring.
1597 outb_p(E8390_TXOFF, e8390_base + EN0_TXCR);
1598 outb_p(E8390_NODMA + E8390_PAGE0 + E8390_START, e8390_base + E8390_CMD);
1601 * Clear the Rx ring of all the debris, and ack the interrupt.
1606 * Leave loopback mode, and resend any packet that got stopped.
1608 outb_p(E8390_TXCONFIG | info->duplex_flag, e8390_base + EN0_TXCR);
1610 outb_p(E8390_NODMA + E8390_PAGE0 + E8390_START + E8390_TRANS, e8390_base + E8390_CMD);
1614 * Collect the stats. This is called unlocked and from several contexts.
1617 static struct net_device_stats *get_stats(struct net_device *dev)
1619 long ioaddr = dev->base_addr;
1620 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1621 unsigned long flags;
1623 /* If the card is stopped, just return the present stats. */
1624 if (!netif_running(dev))
1627 spin_lock_irqsave(&ei_local->page_lock,flags);
1628 /* Read the counter registers, assuming we are in page 0. */
1629 dev->stats.rx_frame_errors += inb_p(ioaddr + EN0_COUNTER0);
1630 dev->stats.rx_crc_errors += inb_p(ioaddr + EN0_COUNTER1);
1631 dev->stats.rx_missed_errors+= inb_p(ioaddr + EN0_COUNTER2);
1632 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1638 * Form the 64 bit 8390 multicast table from the linked list of addresses
1639 * associated with this dev structure.
1642 static inline void make_mc_bits(u8 *bits, struct net_device *dev)
1644 struct dev_mc_list *dmi;
1647 for (dmi=dev->mc_list; dmi; dmi=dmi->next) {
1649 crc = ether_crc(ETH_ALEN, dmi->dmi_addr);
1651 * The 8390 uses the 6 most significant bits of the
1652 * CRC to index the multicast table.
1654 bits[crc>>29] |= (1<<((crc>>26)&7));
1659 * do_set_multicast_list - set/clear multicast filter
1660 * @dev: net device for which multicast filter is adjusted
1662 * Set or clear the multicast filter for this adaptor.
1663 * Must be called with lock held.
1666 static void do_set_multicast_list(struct net_device *dev)
1668 long e8390_base = dev->base_addr;
1670 struct ei_device *ei_local = (struct ei_device*)netdev_priv(dev);
1672 if (!(dev->flags&(IFF_PROMISC|IFF_ALLMULTI))) {
1673 memset(ei_local->mcfilter, 0, 8);
1675 make_mc_bits(ei_local->mcfilter, dev);
1677 /* set to accept-all */
1678 memset(ei_local->mcfilter, 0xFF, 8);
1681 outb_p(E8390_NODMA + E8390_PAGE1, e8390_base + E8390_CMD);
1682 for(i = 0; i < 8; i++)
1684 outb_p(ei_local->mcfilter[i], e8390_base + EN1_MULT_SHIFT(i));
1686 outb_p(E8390_NODMA + E8390_PAGE0, e8390_base + E8390_CMD);
1688 if(dev->flags&IFF_PROMISC)
1689 outb_p(E8390_RXCONFIG | 0x58, e8390_base + EN0_RXCR);
1690 else if(dev->flags&IFF_ALLMULTI || dev->mc_list)
1691 outb_p(E8390_RXCONFIG | 0x48, e8390_base + EN0_RXCR);
1693 outb_p(E8390_RXCONFIG | 0x40, e8390_base + EN0_RXCR);
1695 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, e8390_base+E8390_CMD);
1699 * Called without lock held. This is invoked from user context and may
1700 * be parallel to just about everything else. Its also fairly quick and
1701 * not called too often. Must protect against both bh and irq users
1704 static void set_multicast_list(struct net_device *dev)
1706 unsigned long flags;
1708 spin_lock_irqsave(&dev_lock(dev), flags);
1709 do_set_multicast_list(dev);
1710 spin_unlock_irqrestore(&dev_lock(dev), flags);
1714 * axdev_setup - init rest of 8390 device struct
1715 * @dev: network device structure to init
1717 * Initialize the rest of the 8390 device structure. Do NOT __init
1718 * this, as it is used by 8390 based modular drivers too.
1721 static void axdev_setup(struct net_device *dev)
1723 struct ei_device *ei_local;
1725 printk(version_8390);
1727 ei_local = (struct ei_device *)netdev_priv(dev);
1728 spin_lock_init(&ei_local->page_lock);
1730 dev->hard_start_xmit = &ei_start_xmit;
1731 dev->get_stats = get_stats;
1732 dev->set_multicast_list = &set_multicast_list;
1737 /* This page of functions should be 8390 generic */
1738 /* Follow National Semi's recommendations for initializing the "NIC". */
1741 * AX88190_init - initialize 8390 hardware
1742 * @dev: network device to initialize
1743 * @startp: boolean. non-zero value to initiate chip processing
1745 * Must be called with lock held.
1748 static void AX88190_init(struct net_device *dev, int startp)
1750 axnet_dev_t *info = PRIV(dev);
1751 long e8390_base = dev->base_addr;
1752 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1754 int endcfg = ei_local->word16 ? (0x48 | ENDCFG_WTS) : 0x48;
1756 if(sizeof(struct e8390_pkt_hdr)!=4)
1757 panic("8390.c: header struct mispacked\n");
1758 /* Follow National Semi's recommendations for initing the DP83902. */
1759 outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD); /* 0x21 */
1760 outb_p(endcfg, e8390_base + EN0_DCFG); /* 0x48 or 0x49 */
1761 /* Clear the remote byte count registers. */
1762 outb_p(0x00, e8390_base + EN0_RCNTLO);
1763 outb_p(0x00, e8390_base + EN0_RCNTHI);
1764 /* Set to monitor and loopback mode -- this is vital!. */
1765 outb_p(E8390_RXOFF|0x40, e8390_base + EN0_RXCR); /* 0x60 */
1766 outb_p(E8390_TXOFF, e8390_base + EN0_TXCR); /* 0x02 */
1767 /* Set the transmit page and receive ring. */
1768 outb_p(ei_local->tx_start_page, e8390_base + EN0_TPSR);
1769 ei_local->tx1 = ei_local->tx2 = 0;
1770 outb_p(ei_local->rx_start_page, e8390_base + EN0_STARTPG);
1771 outb_p(ei_local->stop_page-1, e8390_base + EN0_BOUNDARY); /* 3c503 says 0x3f,NS0x26*/
1772 ei_local->current_page = ei_local->rx_start_page; /* assert boundary+1 */
1773 outb_p(ei_local->stop_page, e8390_base + EN0_STOPPG);
1774 /* Clear the pending interrupts and mask. */
1775 outb_p(0xFF, e8390_base + EN0_ISR);
1776 outb_p(0x00, e8390_base + EN0_IMR);
1778 /* Copy the station address into the DS8390 registers. */
1780 outb_p(E8390_NODMA + E8390_PAGE1 + E8390_STOP, e8390_base+E8390_CMD); /* 0x61 */
1781 for(i = 0; i < 6; i++)
1783 outb_p(dev->dev_addr[i], e8390_base + EN1_PHYS_SHIFT(i));
1784 if(inb_p(e8390_base + EN1_PHYS_SHIFT(i))!=dev->dev_addr[i])
1785 printk(KERN_ERR "Hw. address read/write mismap %d\n",i);
1788 outb_p(ei_local->rx_start_page, e8390_base + EN1_CURPAG);
1789 outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD);
1791 netif_start_queue(dev);
1792 ei_local->tx1 = ei_local->tx2 = 0;
1793 ei_local->txing = 0;
1797 outb_p(0xff, e8390_base + EN0_ISR);
1798 outb_p(ENISR_ALL, e8390_base + EN0_IMR);
1799 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, e8390_base+E8390_CMD);
1800 outb_p(E8390_TXCONFIG | info->duplex_flag,
1801 e8390_base + EN0_TXCR); /* xmit on. */
1802 /* 3c503 TechMan says rxconfig only after the NIC is started. */
1803 outb_p(E8390_RXCONFIG | 0x40, e8390_base + EN0_RXCR); /* rx on, */
1804 do_set_multicast_list(dev); /* (re)load the mcast table */
1808 /* Trigger a transmit start, assuming the length is valid.
1809 Always called with the page lock held */
1811 static void NS8390_trigger_send(struct net_device *dev, unsigned int length,
1814 long e8390_base = dev->base_addr;
1815 struct ei_device *ei_local __attribute((unused)) = (struct ei_device *) netdev_priv(dev);
1817 if (inb_p(e8390_base) & E8390_TRANS)
1819 printk(KERN_WARNING "%s: trigger_send() called with the transmitter busy.\n",
1823 outb_p(length & 0xff, e8390_base + EN0_TCNTLO);
1824 outb_p(length >> 8, e8390_base + EN0_TCNTHI);
1825 outb_p(start_page, e8390_base + EN0_TPSR);
1826 outb_p(E8390_NODMA+E8390_TRANS+E8390_START, e8390_base+E8390_CMD);