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>
40 #include <pcmcia/cs_types.h>
41 #include <pcmcia/cs.h>
42 #include <pcmcia/cistpl.h>
43 #include <pcmcia/ciscode.h>
44 #include <pcmcia/ds.h>
45 #include <pcmcia/cisreg.h>
48 #include <asm/system.h>
49 #include <asm/byteorder.h>
50 #include <asm/uaccess.h>
52 #define AXNET_CMD 0x00
53 #define AXNET_DATAPORT 0x10 /* NatSemi-defined port window offset. */
54 #define AXNET_RESET 0x1f /* Issue a read to reset, a write to clear. */
55 #define AXNET_MII_EEP 0x14 /* Offset of MII access port */
56 #define AXNET_TEST 0x15 /* Offset of TEST Register port */
57 #define AXNET_GPIO 0x17 /* Offset of General Purpose Register Port */
59 #define AXNET_START_PG 0x40 /* First page of TX buffer */
60 #define AXNET_STOP_PG 0x80 /* Last page +1 of RX ring */
62 #define AXNET_RDC_TIMEOUT 0x02 /* Max wait in jiffies for Tx RDC */
64 #define IS_AX88190 0x0001
65 #define IS_AX88790 0x0002
67 /*====================================================================*/
69 /* Module parameters */
71 MODULE_AUTHOR("David Hinds <dahinds@users.sourceforge.net>");
72 MODULE_DESCRIPTION("Asix AX88190 PCMCIA ethernet driver");
73 MODULE_LICENSE("GPL");
76 #define INT_MODULE_PARM(n, v) static int n = v; module_param(n, int, 0)
78 INT_MODULE_PARM(pc_debug, PCMCIA_DEBUG);
79 #define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args)
80 static char *version =
81 "axnet_cs.c 1.28 2002/06/29 06:27:37 (David Hinds)";
83 #define DEBUG(n, args...)
86 /*====================================================================*/
88 static void axnet_config(dev_link_t *link);
89 static void axnet_release(dev_link_t *link);
90 static int axnet_event(event_t event, int priority,
91 event_callback_args_t *args);
92 static int axnet_open(struct net_device *dev);
93 static int axnet_close(struct net_device *dev);
94 static int axnet_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
95 static struct ethtool_ops netdev_ethtool_ops;
96 static irqreturn_t ei_irq_wrapper(int irq, void *dev_id, struct pt_regs *regs);
97 static void ei_watchdog(u_long arg);
98 static void axnet_reset_8390(struct net_device *dev);
100 static int mdio_read(kio_addr_t addr, int phy_id, int loc);
101 static void mdio_write(kio_addr_t addr, int phy_id, int loc, int value);
103 static void get_8390_hdr(struct net_device *,
104 struct e8390_pkt_hdr *, int);
105 static void block_input(struct net_device *dev, int count,
106 struct sk_buff *skb, int ring_offset);
107 static void block_output(struct net_device *dev, int count,
108 const u_char *buf, const int start_page);
110 static dev_link_t *axnet_attach(void);
111 static void axnet_detach(dev_link_t *);
113 static dev_info_t dev_info = "axnet_cs";
114 static dev_link_t *dev_list;
116 static void axdev_setup(struct net_device *dev);
117 static void AX88190_init(struct net_device *dev, int startp);
118 static int ax_open(struct net_device *dev);
119 static int ax_close(struct net_device *dev);
120 static irqreturn_t ax_interrupt(int irq, void *dev_id, struct pt_regs *regs);
122 /*====================================================================*/
124 typedef struct axnet_dev_t {
128 struct timer_list watchdog;
129 int stale, fast_poll;
136 static inline axnet_dev_t *PRIV(struct net_device *dev)
138 void *p = (char *)netdev_priv(dev) + sizeof(struct ei_device);
142 /*======================================================================
144 axnet_attach() creates an "instance" of the driver, allocating
145 local data structures for one device. The device is registered
148 ======================================================================*/
150 static dev_link_t *axnet_attach(void)
154 struct net_device *dev;
155 client_reg_t client_reg;
158 DEBUG(0, "axnet_attach()\n");
160 dev = alloc_netdev(sizeof(struct ei_device) + sizeof(axnet_dev_t),
161 "eth%d", axdev_setup);
169 link->irq.Attributes = IRQ_TYPE_EXCLUSIVE;
170 link->irq.IRQInfo1 = IRQ_LEVEL_ID;
171 link->conf.Attributes = CONF_ENABLE_IRQ;
172 link->conf.IntType = INT_MEMORY_AND_IO;
174 dev->open = &axnet_open;
175 dev->stop = &axnet_close;
176 dev->do_ioctl = &axnet_ioctl;
177 SET_ETHTOOL_OPS(dev, &netdev_ethtool_ops);
179 /* Register with Card Services */
180 link->next = dev_list;
182 client_reg.dev_info = &dev_info;
183 client_reg.Version = 0x0210;
184 client_reg.event_callback_args.client_data = link;
185 ret = pcmcia_register_client(&link->handle, &client_reg);
186 if (ret != CS_SUCCESS) {
187 cs_error(link->handle, RegisterClient, ret);
195 /*======================================================================
197 This deletes a driver "instance". The device is de-registered
198 with Card Services. If it has been released, all local data
199 structures are freed. Otherwise, the structures will be freed
200 when the device is released.
202 ======================================================================*/
204 static void axnet_detach(dev_link_t *link)
206 struct net_device *dev = link->priv;
209 DEBUG(0, "axnet_detach(0x%p)\n", link);
211 /* Locate device structure */
212 for (linkp = &dev_list; *linkp; linkp = &(*linkp)->next)
213 if (*linkp == link) break;
218 unregister_netdev(dev);
220 if (link->state & DEV_CONFIG)
224 pcmcia_deregister_client(link->handle);
226 /* Unlink device structure, free bits */
231 /*======================================================================
233 This probes for a card's hardware address by reading the PROM.
235 ======================================================================*/
237 static int get_prom(dev_link_t *link)
239 struct net_device *dev = link->priv;
240 kio_addr_t ioaddr = dev->base_addr;
243 /* This is based on drivers/net/ne.c */
245 u_char value, offset;
247 {E8390_NODMA+E8390_PAGE0+E8390_STOP, E8390_CMD}, /* Select page 0*/
248 {0x01, EN0_DCFG}, /* Set word-wide access. */
249 {0x00, EN0_RCNTLO}, /* Clear the count regs. */
251 {0x00, EN0_IMR}, /* Mask completion irq. */
253 {E8390_RXOFF|0x40, EN0_RXCR}, /* 0x60 Set to monitor */
254 {E8390_TXOFF, EN0_TXCR}, /* 0x02 and loopback mode. */
257 {0x00, EN0_RSARLO}, /* DMA starting at 0x0400. */
259 {E8390_RREAD+E8390_START, E8390_CMD},
262 /* Not much of a test, but the alternatives are messy */
263 if (link->conf.ConfigBase != 0x03c0)
266 axnet_reset_8390(dev);
269 for (i = 0; i < sizeof(program_seq)/sizeof(program_seq[0]); i++)
270 outb_p(program_seq[i].value, ioaddr + program_seq[i].offset);
272 for (i = 0; i < 6; i += 2) {
273 j = inw(ioaddr + AXNET_DATAPORT);
274 dev->dev_addr[i] = j & 0xff;
275 dev->dev_addr[i+1] = j >> 8;
280 /*======================================================================
282 axnet_config() is scheduled to run after a CARD_INSERTION event
283 is received, to configure the PCMCIA socket, and to make the
284 ethernet device available to the system.
286 ======================================================================*/
288 #define CS_CHECK(fn, ret) \
289 do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
291 static int try_io_port(dev_link_t *link)
294 if (link->io.NumPorts1 == 32) {
295 link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;
296 if (link->io.NumPorts2 > 0) {
297 /* for master/slave multifunction cards */
298 link->io.Attributes2 = IO_DATA_PATH_WIDTH_8;
299 link->irq.Attributes =
300 IRQ_TYPE_DYNAMIC_SHARING|IRQ_FIRST_SHARED;
303 /* This should be two 16-port windows */
304 link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
305 link->io.Attributes2 = IO_DATA_PATH_WIDTH_16;
307 if (link->io.BasePort1 == 0) {
308 link->io.IOAddrLines = 16;
309 for (j = 0; j < 0x400; j += 0x20) {
310 link->io.BasePort1 = j ^ 0x300;
311 link->io.BasePort2 = (j ^ 0x300) + 0x10;
312 ret = pcmcia_request_io(link->handle, &link->io);
313 if (ret == CS_SUCCESS) return ret;
317 return pcmcia_request_io(link->handle, &link->io);
321 static void axnet_config(dev_link_t *link)
323 client_handle_t handle = link->handle;
324 struct net_device *dev = link->priv;
325 axnet_dev_t *info = PRIV(dev);
328 int i, j, last_ret, last_fn;
332 DEBUG(0, "axnet_config(0x%p)\n", link);
334 tuple.Attributes = 0;
335 tuple.TupleData = (cisdata_t *)buf;
336 tuple.TupleDataMax = sizeof(buf);
337 tuple.TupleOffset = 0;
338 tuple.DesiredTuple = CISTPL_CONFIG;
339 CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
340 CS_CHECK(GetTupleData, pcmcia_get_tuple_data(handle, &tuple));
341 CS_CHECK(ParseTuple, pcmcia_parse_tuple(handle, &tuple, &parse));
342 link->conf.ConfigBase = parse.config.base;
343 /* don't trust the CIS on this; Linksys got it wrong */
344 link->conf.Present = 0x63;
347 link->state |= DEV_CONFIG;
349 /* Look up current Vcc */
350 CS_CHECK(GetConfigurationInfo, pcmcia_get_configuration_info(handle, &conf));
351 link->conf.Vcc = conf.Vcc;
353 tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
354 tuple.Attributes = 0;
355 CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
356 while (last_ret == CS_SUCCESS) {
357 cistpl_cftable_entry_t *cfg = &(parse.cftable_entry);
358 cistpl_io_t *io = &(parse.cftable_entry.io);
360 if (pcmcia_get_tuple_data(handle, &tuple) != 0 ||
361 pcmcia_parse_tuple(handle, &tuple, &parse) != 0 ||
362 cfg->index == 0 || cfg->io.nwin == 0)
365 link->conf.ConfigIndex = 0x05;
366 /* For multifunction cards, by convention, we configure the
367 network function with window 0, and serial with window 1 */
369 i = (io->win[1].len > io->win[0].len);
370 link->io.BasePort2 = io->win[1-i].base;
371 link->io.NumPorts2 = io->win[1-i].len;
373 i = link->io.NumPorts2 = 0;
375 link->io.BasePort1 = io->win[i].base;
376 link->io.NumPorts1 = io->win[i].len;
377 link->io.IOAddrLines = io->flags & CISTPL_IO_LINES_MASK;
378 if (link->io.NumPorts1 + link->io.NumPorts2 >= 32) {
379 last_ret = try_io_port(link);
380 if (last_ret == CS_SUCCESS) break;
383 last_ret = pcmcia_get_next_tuple(handle, &tuple);
385 if (last_ret != CS_SUCCESS) {
386 cs_error(handle, RequestIO, last_ret);
390 CS_CHECK(RequestIRQ, pcmcia_request_irq(handle, &link->irq));
392 if (link->io.NumPorts2 == 8) {
393 link->conf.Attributes |= CONF_ENABLE_SPKR;
394 link->conf.Status = CCSR_AUDIO_ENA;
397 CS_CHECK(RequestConfiguration, pcmcia_request_configuration(handle, &link->conf));
398 dev->irq = link->irq.AssignedIRQ;
399 dev->base_addr = link->io.BasePort1;
401 if (!get_prom(link)) {
402 printk(KERN_NOTICE "axnet_cs: this is not an AX88190 card!\n");
403 printk(KERN_NOTICE "axnet_cs: use pcnet_cs instead.\n");
407 ei_status.name = "AX88190";
408 ei_status.word16 = 1;
409 ei_status.tx_start_page = AXNET_START_PG;
410 ei_status.rx_start_page = AXNET_START_PG + TX_PAGES;
411 ei_status.stop_page = AXNET_STOP_PG;
412 ei_status.reset_8390 = &axnet_reset_8390;
413 ei_status.get_8390_hdr = &get_8390_hdr;
414 ei_status.block_input = &block_input;
415 ei_status.block_output = &block_output;
417 if (inb(dev->base_addr + AXNET_TEST) != 0)
418 info->flags |= IS_AX88790;
420 info->flags |= IS_AX88190;
422 if (info->flags & IS_AX88790)
423 outb(0x10, dev->base_addr + AXNET_GPIO); /* select Internal PHY */
425 for (i = 0; i < 32; i++) {
426 j = mdio_read(dev->base_addr + AXNET_MII_EEP, i, 1);
427 if ((j != 0) && (j != 0xffff)) break;
430 /* Maybe PHY is in power down mode. (PPD_SET = 1)
431 Bit 2 of CCSR is active low. */
433 conf_reg_t reg = { 0, CS_WRITE, CISREG_CCSR, 0x04 };
434 pcmcia_access_configuration_register(link->handle, ®);
435 for (i = 0; i < 32; i++) {
436 j = mdio_read(dev->base_addr + AXNET_MII_EEP, i, 1);
437 if ((j != 0) && (j != 0xffff)) break;
441 info->phy_id = (i < 32) ? i : -1;
442 link->dev = &info->node;
443 link->state &= ~DEV_CONFIG_PENDING;
444 SET_NETDEV_DEV(dev, &handle_to_dev(handle));
446 if (register_netdev(dev) != 0) {
447 printk(KERN_NOTICE "axnet_cs: register_netdev() failed\n");
452 strcpy(info->node.dev_name, dev->name);
454 printk(KERN_INFO "%s: Asix AX88%d90: io %#3lx, irq %d, hw_addr ",
455 dev->name, ((info->flags & IS_AX88790) ? 7 : 1),
456 dev->base_addr, dev->irq);
457 for (i = 0; i < 6; i++)
458 printk("%02X%s", dev->dev_addr[i], ((i<5) ? ":" : "\n"));
459 if (info->phy_id != -1) {
460 DEBUG(0, " MII transceiver at index %d, status %x.\n", info->phy_id, j);
462 printk(KERN_NOTICE " No MII transceivers found!\n");
467 cs_error(link->handle, last_fn, last_ret);
470 link->state &= ~DEV_CONFIG_PENDING;
474 /*======================================================================
476 After a card is removed, axnet_release() will unregister the net
477 device, and release the PCMCIA configuration. If the device is
478 still open, this will be postponed until it is closed.
480 ======================================================================*/
482 static void axnet_release(dev_link_t *link)
484 DEBUG(0, "axnet_release(0x%p)\n", link);
486 pcmcia_release_configuration(link->handle);
487 pcmcia_release_io(link->handle, &link->io);
488 pcmcia_release_irq(link->handle, &link->irq);
490 link->state &= ~DEV_CONFIG;
493 static int axnet_suspend(struct pcmcia_device *p_dev)
495 dev_link_t *link = dev_to_instance(p_dev);
496 struct net_device *dev = link->priv;
498 link->state |= DEV_SUSPEND;
499 if (link->state & DEV_CONFIG) {
501 netif_device_detach(dev);
502 pcmcia_release_configuration(link->handle);
508 static int axnet_resume(struct pcmcia_device *p_dev)
510 dev_link_t *link = dev_to_instance(p_dev);
511 struct net_device *dev = link->priv;
513 link->state &= ~DEV_SUSPEND;
514 if (link->state & DEV_CONFIG) {
515 pcmcia_request_configuration(link->handle, &link->conf);
517 axnet_reset_8390(dev);
518 AX88190_init(dev, 1);
519 netif_device_attach(dev);
527 /*======================================================================
529 The card status event handler. Mostly, this schedules other
530 stuff to run after an event is received. A CARD_REMOVAL event
531 also sets some flags to discourage the net drivers from trying
532 to talk to the card any more.
534 ======================================================================*/
536 static int axnet_event(event_t event, int priority,
537 event_callback_args_t *args)
539 dev_link_t *link = args->client_data;
540 struct net_device *dev = link->priv;
542 DEBUG(2, "axnet_event(0x%06x)\n", event);
545 case CS_EVENT_CARD_REMOVAL:
546 link->state &= ~DEV_PRESENT;
547 if (link->state & DEV_CONFIG)
548 netif_device_detach(dev);
550 case CS_EVENT_CARD_INSERTION:
551 link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
558 /*======================================================================
560 MII interface support
562 ======================================================================*/
564 #define MDIO_SHIFT_CLK 0x01
565 #define MDIO_DATA_WRITE0 0x00
566 #define MDIO_DATA_WRITE1 0x08
567 #define MDIO_DATA_READ 0x04
568 #define MDIO_MASK 0x0f
569 #define MDIO_ENB_IN 0x02
571 static void mdio_sync(kio_addr_t addr)
574 for (bits = 0; bits < 32; bits++) {
575 outb_p(MDIO_DATA_WRITE1, addr);
576 outb_p(MDIO_DATA_WRITE1 | MDIO_SHIFT_CLK, addr);
580 static int mdio_read(kio_addr_t addr, int phy_id, int loc)
582 u_int cmd = (0xf6<<10)|(phy_id<<5)|loc;
586 for (i = 14; i >= 0; i--) {
587 int dat = (cmd&(1<<i)) ? MDIO_DATA_WRITE1 : MDIO_DATA_WRITE0;
589 outb_p(dat | MDIO_SHIFT_CLK, addr);
591 for (i = 19; i > 0; i--) {
592 outb_p(MDIO_ENB_IN, addr);
593 retval = (retval << 1) | ((inb_p(addr) & MDIO_DATA_READ) != 0);
594 outb_p(MDIO_ENB_IN | MDIO_SHIFT_CLK, addr);
596 return (retval>>1) & 0xffff;
599 static void mdio_write(kio_addr_t addr, int phy_id, int loc, int value)
601 u_int cmd = (0x05<<28)|(phy_id<<23)|(loc<<18)|(1<<17)|value;
605 for (i = 31; i >= 0; i--) {
606 int dat = (cmd&(1<<i)) ? MDIO_DATA_WRITE1 : MDIO_DATA_WRITE0;
608 outb_p(dat | MDIO_SHIFT_CLK, addr);
610 for (i = 1; i >= 0; i--) {
611 outb_p(MDIO_ENB_IN, addr);
612 outb_p(MDIO_ENB_IN | MDIO_SHIFT_CLK, addr);
616 /*====================================================================*/
618 static int axnet_open(struct net_device *dev)
620 axnet_dev_t *info = PRIV(dev);
621 dev_link_t *link = &info->link;
623 DEBUG(2, "axnet_open('%s')\n", dev->name);
630 request_irq(dev->irq, ei_irq_wrapper, SA_SHIRQ, dev_info, dev);
632 info->link_status = 0x00;
633 init_timer(&info->watchdog);
634 info->watchdog.function = &ei_watchdog;
635 info->watchdog.data = (u_long)dev;
636 info->watchdog.expires = jiffies + HZ;
637 add_timer(&info->watchdog);
642 /*====================================================================*/
644 static int axnet_close(struct net_device *dev)
646 axnet_dev_t *info = PRIV(dev);
647 dev_link_t *link = &info->link;
649 DEBUG(2, "axnet_close('%s')\n", dev->name);
652 free_irq(dev->irq, dev);
655 netif_stop_queue(dev);
656 del_timer_sync(&info->watchdog);
661 /*======================================================================
663 Hard reset the card. This used to pause for the same period that
664 a 8390 reset command required, but that shouldn't be necessary.
666 ======================================================================*/
668 static void axnet_reset_8390(struct net_device *dev)
670 kio_addr_t nic_base = dev->base_addr;
673 ei_status.txing = ei_status.dmaing = 0;
675 outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, nic_base + E8390_CMD);
677 outb(inb(nic_base + AXNET_RESET), nic_base + AXNET_RESET);
679 for (i = 0; i < 100; i++) {
680 if ((inb_p(nic_base+EN0_ISR) & ENISR_RESET) != 0)
684 outb_p(ENISR_RESET, nic_base + EN0_ISR); /* Ack intr. */
687 printk(KERN_ERR "%s: axnet_reset_8390() did not complete.\n",
690 } /* axnet_reset_8390 */
692 /*====================================================================*/
694 static irqreturn_t ei_irq_wrapper(int irq, void *dev_id, struct pt_regs *regs)
696 struct net_device *dev = dev_id;
697 PRIV(dev)->stale = 0;
698 return ax_interrupt(irq, dev_id, regs);
701 static void ei_watchdog(u_long arg)
703 struct net_device *dev = (struct net_device *)(arg);
704 axnet_dev_t *info = PRIV(dev);
705 kio_addr_t nic_base = dev->base_addr;
706 kio_addr_t mii_addr = nic_base + AXNET_MII_EEP;
709 if (!netif_device_present(dev)) goto reschedule;
711 /* Check for pending interrupt with expired latency timer: with
712 this, we can limp along even if the interrupt is blocked */
713 if (info->stale++ && (inb_p(nic_base + EN0_ISR) & ENISR_ALL)) {
714 if (!info->fast_poll)
715 printk(KERN_INFO "%s: interrupt(s) dropped!\n", dev->name);
716 ei_irq_wrapper(dev->irq, dev, NULL);
717 info->fast_poll = HZ;
719 if (info->fast_poll) {
721 info->watchdog.expires = jiffies + 1;
722 add_timer(&info->watchdog);
726 if (info->phy_id < 0)
728 link = mdio_read(mii_addr, info->phy_id, 1);
729 if (!link || (link == 0xffff)) {
730 printk(KERN_INFO "%s: MII is missing!\n", dev->name);
736 if (link != info->link_status) {
737 u_short p = mdio_read(mii_addr, info->phy_id, 5);
738 printk(KERN_INFO "%s: %s link beat\n", dev->name,
739 (link) ? "found" : "lost");
741 info->duplex_flag = (p & 0x0140) ? 0x80 : 0x00;
743 printk(KERN_INFO "%s: autonegotiation complete: "
744 "%sbaseT-%cD selected\n", dev->name,
745 ((p & 0x0180) ? "100" : "10"),
746 ((p & 0x0140) ? 'F' : 'H'));
748 printk(KERN_INFO "%s: link partner did not autonegotiate\n",
750 AX88190_init(dev, 1);
752 info->link_status = link;
756 info->watchdog.expires = jiffies + HZ;
757 add_timer(&info->watchdog);
760 static void netdev_get_drvinfo(struct net_device *dev,
761 struct ethtool_drvinfo *info)
763 strcpy(info->driver, "axnet_cs");
766 static struct ethtool_ops netdev_ethtool_ops = {
767 .get_drvinfo = netdev_get_drvinfo,
770 /*====================================================================*/
772 static int axnet_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
774 axnet_dev_t *info = PRIV(dev);
775 u16 *data = (u16 *)&rq->ifr_ifru;
776 kio_addr_t mii_addr = dev->base_addr + AXNET_MII_EEP;
779 data[0] = info->phy_id;
780 case SIOCGMIIREG: /* Read MII PHY register. */
781 data[3] = mdio_read(mii_addr, data[0], data[1] & 0x1f);
783 case SIOCSMIIREG: /* Write MII PHY register. */
784 if (!capable(CAP_NET_ADMIN))
786 mdio_write(mii_addr, data[0], data[1] & 0x1f, data[2]);
792 /*====================================================================*/
794 static void get_8390_hdr(struct net_device *dev,
795 struct e8390_pkt_hdr *hdr,
798 kio_addr_t nic_base = dev->base_addr;
800 outb_p(0, nic_base + EN0_RSARLO); /* On page boundary */
801 outb_p(ring_page, nic_base + EN0_RSARHI);
802 outb_p(E8390_RREAD+E8390_START, nic_base + AXNET_CMD);
804 insw(nic_base + AXNET_DATAPORT, hdr,
805 sizeof(struct e8390_pkt_hdr)>>1);
806 /* Fix for big endian systems */
807 hdr->count = le16_to_cpu(hdr->count);
811 /*====================================================================*/
813 static void block_input(struct net_device *dev, int count,
814 struct sk_buff *skb, int ring_offset)
816 kio_addr_t nic_base = dev->base_addr;
817 int xfer_count = count;
818 char *buf = skb->data;
821 if ((ei_debug > 4) && (count != 4))
822 printk(KERN_DEBUG "%s: [bi=%d]\n", dev->name, count+4);
824 outb_p(ring_offset & 0xff, nic_base + EN0_RSARLO);
825 outb_p(ring_offset >> 8, nic_base + EN0_RSARHI);
826 outb_p(E8390_RREAD+E8390_START, nic_base + AXNET_CMD);
828 insw(nic_base + AXNET_DATAPORT,buf,count>>1);
830 buf[count-1] = inb(nic_base + AXNET_DATAPORT), xfer_count++;
834 /*====================================================================*/
836 static void block_output(struct net_device *dev, int count,
837 const u_char *buf, const int start_page)
839 kio_addr_t nic_base = dev->base_addr;
843 printk(KERN_DEBUG "%s: [bo=%d]\n", dev->name, count);
846 /* Round the count up for word writes. Do we need to do this?
847 What effect will an odd byte count have on the 8390?
848 I should check someday. */
852 outb_p(0x00, nic_base + EN0_RSARLO);
853 outb_p(start_page, nic_base + EN0_RSARHI);
854 outb_p(E8390_RWRITE+E8390_START, nic_base + AXNET_CMD);
855 outsw(nic_base + AXNET_DATAPORT, buf, count>>1);
858 static struct pcmcia_device_id axnet_ids[] = {
859 PCMCIA_PFC_DEVICE_MANF_CARD(0, 0x016c, 0x0081),
860 PCMCIA_DEVICE_MANF_CARD(0x018a, 0x0301),
861 PCMCIA_DEVICE_MANF_CARD(0x026f, 0x0301),
862 PCMCIA_DEVICE_MANF_CARD(0x026f, 0x0303),
863 PCMCIA_DEVICE_MANF_CARD(0x026f, 0x0309),
864 PCMCIA_DEVICE_MANF_CARD(0x0274, 0x1106),
865 PCMCIA_DEVICE_MANF_CARD(0x8a01, 0xc1ab),
866 PCMCIA_DEVICE_PROD_ID124("Fast Ethernet", "16-bit PC Card", "AX88190", 0xb4be14e3, 0x9a12eb6a, 0xab9be5ef),
867 PCMCIA_DEVICE_PROD_ID12("ASIX", "AX88190", 0x0959823b, 0xab9be5ef),
868 PCMCIA_DEVICE_PROD_ID12("Billionton", "LNA-100B", 0x552ab682, 0xbc3b87e1),
869 PCMCIA_DEVICE_PROD_ID12("CHEETAH ETHERCARD", "EN2228", 0x00fa7bc8, 0x00e990cc),
870 PCMCIA_DEVICE_PROD_ID12("CNet", "CNF301", 0xbc477dde, 0x78c5f40b),
871 PCMCIA_DEVICE_PROD_ID12("corega K.K.", "corega FEther PCC-TXD", 0x5261440f, 0x436768c5),
872 PCMCIA_DEVICE_PROD_ID12("corega K.K.", "corega FEtherII PCC-TXD", 0x5261440f, 0x730df72e),
873 PCMCIA_DEVICE_PROD_ID12("Dynalink", "L100C16", 0x55632fd5, 0x66bc2a90),
874 PCMCIA_DEVICE_PROD_ID12("Linksys", "EtherFast 10/100 PC Card (PCMPC100 V3)", 0x0733cc81, 0x232019a8),
875 PCMCIA_DEVICE_PROD_ID12("MELCO", "LPC3-TX", 0x481e0094, 0xf91af609),
876 PCMCIA_DEVICE_PROD_ID12("PCMCIA", "100BASE", 0x281f1c5d, 0x7c2add04),
877 PCMCIA_DEVICE_PROD_ID12("PCMCIA", "FastEtherCard", 0x281f1c5d, 0x7ef26116),
878 PCMCIA_DEVICE_PROD_ID12("PCMCIA", "FEP501", 0x281f1c5d, 0x2e272058),
879 PCMCIA_DEVICE_PROD_ID14("Network Everywhere", "AX88190", 0x820a67b6, 0xab9be5ef),
880 /* this is not specific enough */
881 /* PCMCIA_DEVICE_MANF_CARD(0x021b, 0x0202), */
884 MODULE_DEVICE_TABLE(pcmcia, axnet_ids);
886 static struct pcmcia_driver axnet_cs_driver = {
887 .owner = THIS_MODULE,
891 .attach = axnet_attach,
892 .event = axnet_event,
893 .detach = axnet_detach,
894 .id_table = axnet_ids,
895 .suspend = axnet_suspend,
896 .resume = axnet_resume,
899 static int __init init_axnet_cs(void)
901 return pcmcia_register_driver(&axnet_cs_driver);
904 static void __exit exit_axnet_cs(void)
906 pcmcia_unregister_driver(&axnet_cs_driver);
907 BUG_ON(dev_list != NULL);
910 module_init(init_axnet_cs);
911 module_exit(exit_axnet_cs);
913 /*====================================================================*/
915 /* 8390.c: A general NS8390 ethernet driver core for linux. */
917 Written 1992-94 by Donald Becker.
919 Copyright 1993 United States Government as represented by the
920 Director, National Security Agency.
922 This software may be used and distributed according to the terms
923 of the GNU General Public License, incorporated herein by reference.
925 The author may be reached as becker@scyld.com, or C/O
926 Scyld Computing Corporation
927 410 Severn Ave., Suite 210
930 This is the chip-specific code for many 8390-based ethernet adaptors.
931 This is not a complete driver, it must be combined with board-specific
932 code such as ne.c, wd.c, 3c503.c, etc.
934 Seeing how at least eight drivers use this code, (not counting the
935 PCMCIA ones either) it is easy to break some card by what seems like
936 a simple innocent change. Please contact me or Donald if you think
937 you have found something that needs changing. -- PG
941 Paul Gortmaker : remove set_bit lock, other cleanups.
942 Paul Gortmaker : add ei_get_8390_hdr() so we can pass skb's to
943 ei_block_input() for eth_io_copy_and_sum().
944 Paul Gortmaker : exchange static int ei_pingpong for a #define,
945 also add better Tx error handling.
946 Paul Gortmaker : rewrite Rx overrun handling as per NS specs.
947 Alexey Kuznetsov : use the 8390's six bit hash multicast filter.
948 Paul Gortmaker : tweak ANK's above multicast changes a bit.
949 Paul Gortmaker : update packet statistics for v2.1.x
950 Alan Cox : support arbitary stupid port mappings on the
951 68K Macintosh. Support >16bit I/O spaces
952 Paul Gortmaker : add kmod support for auto-loading of the 8390
953 module by all drivers that require it.
954 Alan Cox : Spinlocking work, added 'BUG_83C690'
955 Paul Gortmaker : Separate out Tx timeout code from Tx path.
958 The National Semiconductor LAN Databook, and the 3Com 3c503 databook.
962 static const char *version_8390 =
963 "8390.c:v1.10cvs 9/23/94 Donald Becker (becker@scyld.com)\n";
965 #include <linux/bitops.h>
967 #include <linux/fcntl.h>
968 #include <linux/in.h>
969 #include <linux/interrupt.h>
971 #include <linux/etherdevice.h>
975 /* These are the operational function interfaces to board-specific
977 void reset_8390(struct net_device *dev)
978 Resets the board associated with DEV, including a hardware reset of
979 the 8390. This is only called when there is a transmit timeout, and
980 it is always followed by 8390_init().
981 void block_output(struct net_device *dev, int count, const unsigned char *buf,
983 Write the COUNT bytes of BUF to the packet buffer at START_PAGE. The
984 "page" value uses the 8390's 256-byte pages.
985 void get_8390_hdr(struct net_device *dev, struct e8390_hdr *hdr, int ring_page)
986 Read the 4 byte, page aligned 8390 header. *If* there is a
987 subsequent read, it will be of the rest of the packet.
988 void block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset)
989 Read COUNT bytes from the packet buffer into the skb data area. Start
990 reading from RING_OFFSET, the address as the 8390 sees it. This will always
991 follow the read of the 8390 header.
993 #define ei_reset_8390 (ei_local->reset_8390)
994 #define ei_block_output (ei_local->block_output)
995 #define ei_block_input (ei_local->block_input)
996 #define ei_get_8390_hdr (ei_local->get_8390_hdr)
998 /* use 0 for production, 1 for verification, >2 for debug */
1003 /* Index to functions. */
1004 static void ei_tx_intr(struct net_device *dev);
1005 static void ei_tx_err(struct net_device *dev);
1006 static void ei_tx_timeout(struct net_device *dev);
1007 static void ei_receive(struct net_device *dev);
1008 static void ei_rx_overrun(struct net_device *dev);
1010 /* Routines generic to NS8390-based boards. */
1011 static void NS8390_trigger_send(struct net_device *dev, unsigned int length,
1013 static void set_multicast_list(struct net_device *dev);
1014 static void do_set_multicast_list(struct net_device *dev);
1017 * SMP and the 8390 setup.
1019 * The 8390 isnt exactly designed to be multithreaded on RX/TX. There is
1020 * a page register that controls bank and packet buffer access. We guard
1021 * this with ei_local->page_lock. Nobody should assume or set the page other
1022 * than zero when the lock is not held. Lock holders must restore page 0
1023 * before unlocking. Even pure readers must take the lock to protect in
1026 * To make life difficult the chip can also be very slow. We therefore can't
1027 * just use spinlocks. For the longer lockups we disable the irq the device
1028 * sits on and hold the lock. We must hold the lock because there is a dual
1029 * processor case other than interrupts (get stats/set multicast list in
1030 * parallel with each other and transmit).
1032 * Note: in theory we can just disable the irq on the card _but_ there is
1033 * a latency on SMP irq delivery. So we can easily go "disable irq" "sync irqs"
1034 * enter lock, take the queued irq. So we waddle instead of flying.
1036 * Finally by special arrangement for the purpose of being generally
1037 * annoying the transmit function is called bh atomic. That places
1038 * restrictions on the user context callers as disable_irq won't save
1043 * ax_open - Open/initialize the board.
1044 * @dev: network device to initialize
1046 * This routine goes all-out, setting everything
1047 * up anew at each open, even though many of these registers should only
1048 * need to be set once at boot.
1050 static int ax_open(struct net_device *dev)
1052 unsigned long flags;
1053 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1055 #ifdef HAVE_TX_TIMEOUT
1056 /* The card I/O part of the driver (e.g. 3c503) can hook a Tx timeout
1057 wrapper that does e.g. media check & then calls ei_tx_timeout. */
1058 if (dev->tx_timeout == NULL)
1059 dev->tx_timeout = ei_tx_timeout;
1060 if (dev->watchdog_timeo <= 0)
1061 dev->watchdog_timeo = TX_TIMEOUT;
1065 * Grab the page lock so we own the register set, then call
1066 * the init function.
1069 spin_lock_irqsave(&ei_local->page_lock, flags);
1070 AX88190_init(dev, 1);
1071 /* Set the flag before we drop the lock, That way the IRQ arrives
1072 after its set and we get no silly warnings */
1073 netif_start_queue(dev);
1074 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1075 ei_local->irqlock = 0;
1079 #define dev_lock(dev) (((struct ei_device *)netdev_priv(dev))->page_lock)
1082 * ax_close - shut down network device
1083 * @dev: network device to close
1085 * Opposite of ax_open(). Only used when "ifconfig <devname> down" is done.
1087 int ax_close(struct net_device *dev)
1089 unsigned long flags;
1092 * Hold the page lock during close
1095 spin_lock_irqsave(&dev_lock(dev), flags);
1096 AX88190_init(dev, 0);
1097 spin_unlock_irqrestore(&dev_lock(dev), flags);
1098 netif_stop_queue(dev);
1103 * ei_tx_timeout - handle transmit time out condition
1104 * @dev: network device which has apparently fallen asleep
1106 * Called by kernel when device never acknowledges a transmit has
1107 * completed (or failed) - i.e. never posted a Tx related interrupt.
1110 void ei_tx_timeout(struct net_device *dev)
1112 long e8390_base = dev->base_addr;
1113 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1114 int txsr, isr, tickssofar = jiffies - dev->trans_start;
1115 unsigned long flags;
1117 ei_local->stat.tx_errors++;
1119 spin_lock_irqsave(&ei_local->page_lock, flags);
1120 txsr = inb(e8390_base+EN0_TSR);
1121 isr = inb(e8390_base+EN0_ISR);
1122 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1124 printk(KERN_DEBUG "%s: Tx timed out, %s TSR=%#2x, ISR=%#2x, t=%d.\n",
1125 dev->name, (txsr & ENTSR_ABT) ? "excess collisions." :
1126 (isr) ? "lost interrupt?" : "cable problem?", txsr, isr, tickssofar);
1128 if (!isr && !ei_local->stat.tx_packets)
1130 /* The 8390 probably hasn't gotten on the cable yet. */
1131 ei_local->interface_num ^= 1; /* Try a different xcvr. */
1134 /* Ugly but a reset can be slow, yet must be protected */
1136 disable_irq_nosync(dev->irq);
1137 spin_lock(&ei_local->page_lock);
1139 /* Try to restart the card. Perhaps the user has fixed something. */
1141 AX88190_init(dev, 1);
1143 spin_unlock(&ei_local->page_lock);
1144 enable_irq(dev->irq);
1145 netif_wake_queue(dev);
1149 * ei_start_xmit - begin packet transmission
1150 * @skb: packet to be sent
1151 * @dev: network device to which packet is sent
1153 * Sends a packet to an 8390 network device.
1156 static int ei_start_xmit(struct sk_buff *skb, struct net_device *dev)
1158 long e8390_base = dev->base_addr;
1159 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1160 int length, send_length, output_page;
1161 unsigned long flags;
1162 u8 packet[ETH_ZLEN];
1164 netif_stop_queue(dev);
1168 /* Mask interrupts from the ethercard.
1169 SMP: We have to grab the lock here otherwise the IRQ handler
1170 on another CPU can flip window and race the IRQ mask set. We end
1171 up trashing the mcast filter not disabling irqs if we don't lock */
1173 spin_lock_irqsave(&ei_local->page_lock, flags);
1174 outb_p(0x00, e8390_base + EN0_IMR);
1175 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1178 * Slow phase with lock held.
1181 disable_irq_nosync(dev->irq);
1183 spin_lock(&ei_local->page_lock);
1185 ei_local->irqlock = 1;
1187 send_length = ETH_ZLEN < length ? length : ETH_ZLEN;
1190 * We have two Tx slots available for use. Find the first free
1191 * slot, and then perform some sanity checks. With two Tx bufs,
1192 * you get very close to transmitting back-to-back packets. With
1193 * only one Tx buf, the transmitter sits idle while you reload the
1194 * card, leaving a substantial gap between each transmitted packet.
1197 if (ei_local->tx1 == 0)
1199 output_page = ei_local->tx_start_page;
1200 ei_local->tx1 = send_length;
1201 if (ei_debug && ei_local->tx2 > 0)
1202 printk(KERN_DEBUG "%s: idle transmitter tx2=%d, lasttx=%d, txing=%d.\n",
1203 dev->name, ei_local->tx2, ei_local->lasttx, ei_local->txing);
1205 else if (ei_local->tx2 == 0)
1207 output_page = ei_local->tx_start_page + TX_PAGES/2;
1208 ei_local->tx2 = send_length;
1209 if (ei_debug && ei_local->tx1 > 0)
1210 printk(KERN_DEBUG "%s: idle transmitter, tx1=%d, lasttx=%d, txing=%d.\n",
1211 dev->name, ei_local->tx1, ei_local->lasttx, ei_local->txing);
1214 { /* We should never get here. */
1216 printk(KERN_DEBUG "%s: No Tx buffers free! tx1=%d tx2=%d last=%d\n",
1217 dev->name, ei_local->tx1, ei_local->tx2, ei_local->lasttx);
1218 ei_local->irqlock = 0;
1219 netif_stop_queue(dev);
1220 outb_p(ENISR_ALL, e8390_base + EN0_IMR);
1221 spin_unlock(&ei_local->page_lock);
1222 enable_irq(dev->irq);
1223 ei_local->stat.tx_errors++;
1228 * Okay, now upload the packet and trigger a send if the transmitter
1229 * isn't already sending. If it is busy, the interrupt handler will
1230 * trigger the send later, upon receiving a Tx done interrupt.
1233 if (length == skb->len)
1234 ei_block_output(dev, length, skb->data, output_page);
1236 memset(packet, 0, ETH_ZLEN);
1237 memcpy(packet, skb->data, skb->len);
1238 ei_block_output(dev, length, packet, output_page);
1241 if (! ei_local->txing)
1243 ei_local->txing = 1;
1244 NS8390_trigger_send(dev, send_length, output_page);
1245 dev->trans_start = jiffies;
1246 if (output_page == ei_local->tx_start_page)
1249 ei_local->lasttx = -1;
1254 ei_local->lasttx = -2;
1257 else ei_local->txqueue++;
1259 if (ei_local->tx1 && ei_local->tx2)
1260 netif_stop_queue(dev);
1262 netif_start_queue(dev);
1264 /* Turn 8390 interrupts back on. */
1265 ei_local->irqlock = 0;
1266 outb_p(ENISR_ALL, e8390_base + EN0_IMR);
1268 spin_unlock(&ei_local->page_lock);
1269 enable_irq(dev->irq);
1271 dev_kfree_skb (skb);
1272 ei_local->stat.tx_bytes += send_length;
1278 * ax_interrupt - handle the interrupts from an 8390
1279 * @irq: interrupt number
1280 * @dev_id: a pointer to the net_device
1283 * Handle the ether interface interrupts. We pull packets from
1284 * the 8390 via the card specific functions and fire them at the networking
1285 * stack. We also handle transmit completions and wake the transmit path if
1286 * necessary. We also update the counters and do other housekeeping as
1290 static irqreturn_t ax_interrupt(int irq, void *dev_id, struct pt_regs * regs)
1292 struct net_device *dev = dev_id;
1294 int interrupts, nr_serviced = 0, i;
1295 struct ei_device *ei_local;
1300 printk ("net_interrupt(): irq %d for unknown device.\n", irq);
1304 e8390_base = dev->base_addr;
1305 ei_local = (struct ei_device *) netdev_priv(dev);
1308 * Protect the irq test too.
1311 spin_lock(&ei_local->page_lock);
1313 if (ei_local->irqlock)
1315 #if 1 /* This might just be an interrupt for a PCI device sharing this line */
1316 /* The "irqlock" check is only for testing. */
1317 printk(ei_local->irqlock
1318 ? "%s: Interrupted while interrupts are masked! isr=%#2x imr=%#2x.\n"
1319 : "%s: Reentering the interrupt handler! isr=%#2x imr=%#2x.\n",
1320 dev->name, inb_p(e8390_base + EN0_ISR),
1321 inb_p(e8390_base + EN0_IMR));
1323 spin_unlock(&ei_local->page_lock);
1328 printk(KERN_DEBUG "%s: interrupt(isr=%#2.2x).\n", dev->name,
1329 inb_p(e8390_base + EN0_ISR));
1331 outb_p(0x00, e8390_base + EN0_ISR);
1332 ei_local->irqlock = 1;
1334 /* !!Assumption!! -- we stay in page 0. Don't break this. */
1335 while ((interrupts = inb_p(e8390_base + EN0_ISR)) != 0
1336 && ++nr_serviced < MAX_SERVICE)
1338 if (!netif_running(dev) || (interrupts == 0xff)) {
1340 printk(KERN_WARNING "%s: interrupt from stopped card\n", dev->name);
1341 outb_p(interrupts, e8390_base + EN0_ISR);
1347 /* AX88190 bug fix. */
1348 outb_p(interrupts, e8390_base + EN0_ISR);
1349 for (i = 0; i < 10; i++) {
1350 if (!(inb(e8390_base + EN0_ISR) & interrupts))
1352 outb_p(0, e8390_base + EN0_ISR);
1353 outb_p(interrupts, e8390_base + EN0_ISR);
1355 if (interrupts & ENISR_OVER)
1357 else if (interrupts & (ENISR_RX+ENISR_RX_ERR))
1359 /* Got a good (?) packet. */
1362 /* Push the next to-transmit packet through. */
1363 if (interrupts & ENISR_TX)
1365 else if (interrupts & ENISR_TX_ERR)
1368 if (interrupts & ENISR_COUNTERS)
1370 ei_local->stat.rx_frame_errors += inb_p(e8390_base + EN0_COUNTER0);
1371 ei_local->stat.rx_crc_errors += inb_p(e8390_base + EN0_COUNTER1);
1372 ei_local->stat.rx_missed_errors+= inb_p(e8390_base + EN0_COUNTER2);
1376 if (interrupts && ei_debug)
1379 if (nr_serviced >= MAX_SERVICE)
1381 /* 0xFF is valid for a card removal */
1382 if(interrupts!=0xFF)
1383 printk(KERN_WARNING "%s: Too much work at interrupt, status %#2.2x\n",
1384 dev->name, interrupts);
1385 outb_p(ENISR_ALL, e8390_base + EN0_ISR); /* Ack. most intrs. */
1387 printk(KERN_WARNING "%s: unknown interrupt %#2x\n", dev->name, interrupts);
1388 outb_p(0xff, e8390_base + EN0_ISR); /* Ack. all intrs. */
1392 /* Turn 8390 interrupts back on. */
1393 ei_local->irqlock = 0;
1394 outb_p(ENISR_ALL, e8390_base + EN0_IMR);
1396 spin_unlock(&ei_local->page_lock);
1397 return IRQ_RETVAL(handled);
1401 * ei_tx_err - handle transmitter error
1402 * @dev: network device which threw the exception
1404 * A transmitter error has happened. Most likely excess collisions (which
1405 * is a fairly normal condition). If the error is one where the Tx will
1406 * have been aborted, we try and send another one right away, instead of
1407 * letting the failed packet sit and collect dust in the Tx buffer. This
1408 * is a much better solution as it avoids kernel based Tx timeouts, and
1409 * an unnecessary card reset.
1411 * Called with lock held.
1414 static void ei_tx_err(struct net_device *dev)
1416 long e8390_base = dev->base_addr;
1417 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1418 unsigned char txsr = inb_p(e8390_base+EN0_TSR);
1419 unsigned char tx_was_aborted = txsr & (ENTSR_ABT+ENTSR_FU);
1421 #ifdef VERBOSE_ERROR_DUMP
1422 printk(KERN_DEBUG "%s: transmitter error (%#2x): ", dev->name, txsr);
1423 if (txsr & ENTSR_ABT)
1424 printk("excess-collisions ");
1425 if (txsr & ENTSR_ND)
1426 printk("non-deferral ");
1427 if (txsr & ENTSR_CRS)
1428 printk("lost-carrier ");
1429 if (txsr & ENTSR_FU)
1430 printk("FIFO-underrun ");
1431 if (txsr & ENTSR_CDH)
1432 printk("lost-heartbeat ");
1440 ei_local->stat.tx_errors++;
1441 if (txsr & ENTSR_CRS) ei_local->stat.tx_carrier_errors++;
1442 if (txsr & ENTSR_CDH) ei_local->stat.tx_heartbeat_errors++;
1443 if (txsr & ENTSR_OWC) ei_local->stat.tx_window_errors++;
1448 * ei_tx_intr - transmit interrupt handler
1449 * @dev: network device for which tx intr is handled
1451 * We have finished a transmit: check for errors and then trigger the next
1452 * packet to be sent. Called with lock held.
1455 static void ei_tx_intr(struct net_device *dev)
1457 long e8390_base = dev->base_addr;
1458 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1459 int status = inb(e8390_base + EN0_TSR);
1462 * There are two Tx buffers, see which one finished, and trigger
1463 * the send of another one if it exists.
1465 ei_local->txqueue--;
1467 if (ei_local->tx1 < 0)
1469 if (ei_local->lasttx != 1 && ei_local->lasttx != -1)
1470 printk(KERN_ERR "%s: bogus last_tx_buffer %d, tx1=%d.\n",
1471 ei_local->name, ei_local->lasttx, ei_local->tx1);
1473 if (ei_local->tx2 > 0)
1475 ei_local->txing = 1;
1476 NS8390_trigger_send(dev, ei_local->tx2, ei_local->tx_start_page + 6);
1477 dev->trans_start = jiffies;
1479 ei_local->lasttx = 2;
1481 else ei_local->lasttx = 20, ei_local->txing = 0;
1483 else if (ei_local->tx2 < 0)
1485 if (ei_local->lasttx != 2 && ei_local->lasttx != -2)
1486 printk("%s: bogus last_tx_buffer %d, tx2=%d.\n",
1487 ei_local->name, ei_local->lasttx, ei_local->tx2);
1489 if (ei_local->tx1 > 0)
1491 ei_local->txing = 1;
1492 NS8390_trigger_send(dev, ei_local->tx1, ei_local->tx_start_page);
1493 dev->trans_start = jiffies;
1495 ei_local->lasttx = 1;
1498 ei_local->lasttx = 10, ei_local->txing = 0;
1500 // else printk(KERN_WARNING "%s: unexpected TX-done interrupt, lasttx=%d.\n",
1501 // dev->name, ei_local->lasttx);
1503 /* Minimize Tx latency: update the statistics after we restart TXing. */
1504 if (status & ENTSR_COL)
1505 ei_local->stat.collisions++;
1506 if (status & ENTSR_PTX)
1507 ei_local->stat.tx_packets++;
1510 ei_local->stat.tx_errors++;
1511 if (status & ENTSR_ABT)
1513 ei_local->stat.tx_aborted_errors++;
1514 ei_local->stat.collisions += 16;
1516 if (status & ENTSR_CRS)
1517 ei_local->stat.tx_carrier_errors++;
1518 if (status & ENTSR_FU)
1519 ei_local->stat.tx_fifo_errors++;
1520 if (status & ENTSR_CDH)
1521 ei_local->stat.tx_heartbeat_errors++;
1522 if (status & ENTSR_OWC)
1523 ei_local->stat.tx_window_errors++;
1525 netif_wake_queue(dev);
1529 * ei_receive - receive some packets
1530 * @dev: network device with which receive will be run
1532 * We have a good packet(s), get it/them out of the buffers.
1533 * Called with lock held.
1536 static void ei_receive(struct net_device *dev)
1538 long e8390_base = dev->base_addr;
1539 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1540 unsigned char rxing_page, this_frame, next_frame;
1541 unsigned short current_offset;
1542 int rx_pkt_count = 0;
1543 struct e8390_pkt_hdr rx_frame;
1545 while (++rx_pkt_count < 10)
1547 int pkt_len, pkt_stat;
1549 /* Get the rx page (incoming packet pointer). */
1550 rxing_page = inb_p(e8390_base + EN1_CURPAG -1);
1552 /* Remove one frame from the ring. Boundary is always a page behind. */
1553 this_frame = inb_p(e8390_base + EN0_BOUNDARY) + 1;
1554 if (this_frame >= ei_local->stop_page)
1555 this_frame = ei_local->rx_start_page;
1557 /* Someday we'll omit the previous, iff we never get this message.
1558 (There is at least one clone claimed to have a problem.)
1560 Keep quiet if it looks like a card removal. One problem here
1561 is that some clones crash in roughly the same way.
1563 if (ei_debug > 0 && this_frame != ei_local->current_page && (this_frame!=0x0 || rxing_page!=0xFF))
1564 printk(KERN_ERR "%s: mismatched read page pointers %2x vs %2x.\n",
1565 dev->name, this_frame, ei_local->current_page);
1567 if (this_frame == rxing_page) /* Read all the frames? */
1568 break; /* Done for now */
1570 current_offset = this_frame << 8;
1571 ei_get_8390_hdr(dev, &rx_frame, this_frame);
1573 pkt_len = rx_frame.count - sizeof(struct e8390_pkt_hdr);
1574 pkt_stat = rx_frame.status;
1576 next_frame = this_frame + 1 + ((pkt_len+4)>>8);
1578 if (pkt_len < 60 || pkt_len > 1518)
1581 printk(KERN_DEBUG "%s: bogus packet size: %d, status=%#2x nxpg=%#2x.\n",
1582 dev->name, rx_frame.count, rx_frame.status,
1584 ei_local->stat.rx_errors++;
1585 ei_local->stat.rx_length_errors++;
1587 else if ((pkt_stat & 0x0F) == ENRSR_RXOK)
1589 struct sk_buff *skb;
1591 skb = dev_alloc_skb(pkt_len+2);
1595 printk(KERN_DEBUG "%s: Couldn't allocate a sk_buff of size %d.\n",
1596 dev->name, pkt_len);
1597 ei_local->stat.rx_dropped++;
1602 skb_reserve(skb,2); /* IP headers on 16 byte boundaries */
1604 skb_put(skb, pkt_len); /* Make room */
1605 ei_block_input(dev, pkt_len, skb, current_offset + sizeof(rx_frame));
1606 skb->protocol=eth_type_trans(skb,dev);
1608 dev->last_rx = jiffies;
1609 ei_local->stat.rx_packets++;
1610 ei_local->stat.rx_bytes += pkt_len;
1611 if (pkt_stat & ENRSR_PHY)
1612 ei_local->stat.multicast++;
1618 printk(KERN_DEBUG "%s: bogus packet: status=%#2x nxpg=%#2x size=%d\n",
1619 dev->name, rx_frame.status, rx_frame.next,
1621 ei_local->stat.rx_errors++;
1622 /* NB: The NIC counts CRC, frame and missed errors. */
1623 if (pkt_stat & ENRSR_FO)
1624 ei_local->stat.rx_fifo_errors++;
1626 next_frame = rx_frame.next;
1628 /* This _should_ never happen: it's here for avoiding bad clones. */
1629 if (next_frame >= ei_local->stop_page) {
1630 printk("%s: next frame inconsistency, %#2x\n", dev->name,
1632 next_frame = ei_local->rx_start_page;
1634 ei_local->current_page = next_frame;
1635 outb_p(next_frame-1, e8390_base+EN0_BOUNDARY);
1642 * ei_rx_overrun - handle receiver overrun
1643 * @dev: network device which threw exception
1645 * We have a receiver overrun: we have to kick the 8390 to get it started
1646 * again. Problem is that you have to kick it exactly as NS prescribes in
1647 * the updated datasheets, or "the NIC may act in an unpredictable manner."
1648 * This includes causing "the NIC to defer indefinitely when it is stopped
1649 * on a busy network." Ugh.
1650 * Called with lock held. Don't call this with the interrupts off or your
1651 * computer will hate you - it takes 10ms or so.
1654 static void ei_rx_overrun(struct net_device *dev)
1656 axnet_dev_t *info = (axnet_dev_t *)dev;
1657 long e8390_base = dev->base_addr;
1658 unsigned char was_txing, must_resend = 0;
1659 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1662 * Record whether a Tx was in progress and then issue the
1665 was_txing = inb_p(e8390_base+E8390_CMD) & E8390_TRANS;
1666 outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD);
1669 printk(KERN_DEBUG "%s: Receiver overrun.\n", dev->name);
1670 ei_local->stat.rx_over_errors++;
1673 * Wait a full Tx time (1.2ms) + some guard time, NS says 1.6ms total.
1674 * Early datasheets said to poll the reset bit, but now they say that
1675 * it "is not a reliable indicator and subsequently should be ignored."
1676 * We wait at least 10ms.
1682 * Reset RBCR[01] back to zero as per magic incantation.
1684 outb_p(0x00, e8390_base+EN0_RCNTLO);
1685 outb_p(0x00, e8390_base+EN0_RCNTHI);
1688 * See if any Tx was interrupted or not. According to NS, this
1689 * step is vital, and skipping it will cause no end of havoc.
1694 unsigned char tx_completed = inb_p(e8390_base+EN0_ISR) & (ENISR_TX+ENISR_TX_ERR);
1700 * Have to enter loopback mode and then restart the NIC before
1701 * you are allowed to slurp packets up off the ring.
1703 outb_p(E8390_TXOFF, e8390_base + EN0_TXCR);
1704 outb_p(E8390_NODMA + E8390_PAGE0 + E8390_START, e8390_base + E8390_CMD);
1707 * Clear the Rx ring of all the debris, and ack the interrupt.
1712 * Leave loopback mode, and resend any packet that got stopped.
1714 outb_p(E8390_TXCONFIG | info->duplex_flag, e8390_base + EN0_TXCR);
1716 outb_p(E8390_NODMA + E8390_PAGE0 + E8390_START + E8390_TRANS, e8390_base + E8390_CMD);
1720 * Collect the stats. This is called unlocked and from several contexts.
1723 static struct net_device_stats *get_stats(struct net_device *dev)
1725 long ioaddr = dev->base_addr;
1726 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1727 unsigned long flags;
1729 /* If the card is stopped, just return the present stats. */
1730 if (!netif_running(dev))
1731 return &ei_local->stat;
1733 spin_lock_irqsave(&ei_local->page_lock,flags);
1734 /* Read the counter registers, assuming we are in page 0. */
1735 ei_local->stat.rx_frame_errors += inb_p(ioaddr + EN0_COUNTER0);
1736 ei_local->stat.rx_crc_errors += inb_p(ioaddr + EN0_COUNTER1);
1737 ei_local->stat.rx_missed_errors+= inb_p(ioaddr + EN0_COUNTER2);
1738 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1740 return &ei_local->stat;
1744 * do_set_multicast_list - set/clear multicast filter
1745 * @dev: net device for which multicast filter is adjusted
1747 * Set or clear the multicast filter for this adaptor. May be called
1748 * from a BH in 2.1.x. Must be called with lock held.
1751 static void do_set_multicast_list(struct net_device *dev)
1753 long e8390_base = dev->base_addr;
1755 if(dev->flags&IFF_PROMISC)
1756 outb_p(E8390_RXCONFIG | 0x58, e8390_base + EN0_RXCR);
1757 else if(dev->flags&IFF_ALLMULTI || dev->mc_list)
1758 outb_p(E8390_RXCONFIG | 0x48, e8390_base + EN0_RXCR);
1760 outb_p(E8390_RXCONFIG | 0x40, e8390_base + EN0_RXCR);
1764 * Called without lock held. This is invoked from user context and may
1765 * be parallel to just about everything else. Its also fairly quick and
1766 * not called too often. Must protect against both bh and irq users
1769 static void set_multicast_list(struct net_device *dev)
1771 unsigned long flags;
1773 spin_lock_irqsave(&dev_lock(dev), flags);
1774 do_set_multicast_list(dev);
1775 spin_unlock_irqrestore(&dev_lock(dev), flags);
1779 * axdev_setup - init rest of 8390 device struct
1780 * @dev: network device structure to init
1782 * Initialize the rest of the 8390 device structure. Do NOT __init
1783 * this, as it is used by 8390 based modular drivers too.
1786 static void axdev_setup(struct net_device *dev)
1788 struct ei_device *ei_local;
1790 printk(version_8390);
1792 SET_MODULE_OWNER(dev);
1795 ei_local = (struct ei_device *)netdev_priv(dev);
1796 spin_lock_init(&ei_local->page_lock);
1798 dev->hard_start_xmit = &ei_start_xmit;
1799 dev->get_stats = get_stats;
1800 dev->set_multicast_list = &set_multicast_list;
1805 /* This page of functions should be 8390 generic */
1806 /* Follow National Semi's recommendations for initializing the "NIC". */
1809 * AX88190_init - initialize 8390 hardware
1810 * @dev: network device to initialize
1811 * @startp: boolean. non-zero value to initiate chip processing
1813 * Must be called with lock held.
1816 static void AX88190_init(struct net_device *dev, int startp)
1818 axnet_dev_t *info = PRIV(dev);
1819 long e8390_base = dev->base_addr;
1820 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1822 int endcfg = ei_local->word16 ? (0x48 | ENDCFG_WTS) : 0x48;
1824 if(sizeof(struct e8390_pkt_hdr)!=4)
1825 panic("8390.c: header struct mispacked\n");
1826 /* Follow National Semi's recommendations for initing the DP83902. */
1827 outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD); /* 0x21 */
1828 outb_p(endcfg, e8390_base + EN0_DCFG); /* 0x48 or 0x49 */
1829 /* Clear the remote byte count registers. */
1830 outb_p(0x00, e8390_base + EN0_RCNTLO);
1831 outb_p(0x00, e8390_base + EN0_RCNTHI);
1832 /* Set to monitor and loopback mode -- this is vital!. */
1833 outb_p(E8390_RXOFF|0x40, e8390_base + EN0_RXCR); /* 0x60 */
1834 outb_p(E8390_TXOFF, e8390_base + EN0_TXCR); /* 0x02 */
1835 /* Set the transmit page and receive ring. */
1836 outb_p(ei_local->tx_start_page, e8390_base + EN0_TPSR);
1837 ei_local->tx1 = ei_local->tx2 = 0;
1838 outb_p(ei_local->rx_start_page, e8390_base + EN0_STARTPG);
1839 outb_p(ei_local->stop_page-1, e8390_base + EN0_BOUNDARY); /* 3c503 says 0x3f,NS0x26*/
1840 ei_local->current_page = ei_local->rx_start_page; /* assert boundary+1 */
1841 outb_p(ei_local->stop_page, e8390_base + EN0_STOPPG);
1842 /* Clear the pending interrupts and mask. */
1843 outb_p(0xFF, e8390_base + EN0_ISR);
1844 outb_p(0x00, e8390_base + EN0_IMR);
1846 /* Copy the station address into the DS8390 registers. */
1848 outb_p(E8390_NODMA + E8390_PAGE1 + E8390_STOP, e8390_base+E8390_CMD); /* 0x61 */
1849 for(i = 0; i < 6; i++)
1851 outb_p(dev->dev_addr[i], e8390_base + EN1_PHYS_SHIFT(i));
1852 if(inb_p(e8390_base + EN1_PHYS_SHIFT(i))!=dev->dev_addr[i])
1853 printk(KERN_ERR "Hw. address read/write mismap %d\n",i);
1856 * Initialize the multicast list to accept-all. If we enable multicast
1857 * the higher levels can do the filtering.
1859 for (i = 0; i < 8; i++)
1860 outb_p(0xff, e8390_base + EN1_MULT + i);
1862 outb_p(ei_local->rx_start_page, e8390_base + EN1_CURPAG);
1863 outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD);
1865 netif_start_queue(dev);
1866 ei_local->tx1 = ei_local->tx2 = 0;
1867 ei_local->txing = 0;
1871 outb_p(0xff, e8390_base + EN0_ISR);
1872 outb_p(ENISR_ALL, e8390_base + EN0_IMR);
1873 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, e8390_base+E8390_CMD);
1874 outb_p(E8390_TXCONFIG | info->duplex_flag,
1875 e8390_base + EN0_TXCR); /* xmit on. */
1876 /* 3c503 TechMan says rxconfig only after the NIC is started. */
1877 outb_p(E8390_RXCONFIG | 0x40, e8390_base + EN0_RXCR); /* rx on, */
1878 do_set_multicast_list(dev); /* (re)load the mcast table */
1882 /* Trigger a transmit start, assuming the length is valid.
1883 Always called with the page lock held */
1885 static void NS8390_trigger_send(struct net_device *dev, unsigned int length,
1888 long e8390_base = dev->base_addr;
1889 struct ei_device *ei_local __attribute((unused)) = (struct ei_device *) netdev_priv(dev);
1891 if (inb_p(e8390_base) & E8390_TRANS)
1893 printk(KERN_WARNING "%s: trigger_send() called with the transmitter busy.\n",
1897 outb_p(length & 0xff, e8390_base + EN0_TCNTLO);
1898 outb_p(length >> 8, e8390_base + EN0_TCNTHI);
1899 outb_p(start_page, e8390_base + EN0_TPSR);
1900 outb_p(E8390_NODMA+E8390_TRANS+E8390_START, e8390_base+E8390_CMD);