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/version.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 void axnet_config(dev_link_t *link);
90 static void axnet_release(dev_link_t *link);
91 static int axnet_event(event_t event, int priority,
92 event_callback_args_t *args);
93 static int axnet_open(struct net_device *dev);
94 static int axnet_close(struct net_device *dev);
95 static int axnet_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
96 static struct ethtool_ops netdev_ethtool_ops;
97 static irqreturn_t ei_irq_wrapper(int irq, void *dev_id, struct pt_regs *regs);
98 static void ei_watchdog(u_long arg);
99 static void axnet_reset_8390(struct net_device *dev);
101 static int mdio_read(kio_addr_t addr, int phy_id, int loc);
102 static void mdio_write(kio_addr_t addr, int phy_id, int loc, int value);
104 static void get_8390_hdr(struct net_device *,
105 struct e8390_pkt_hdr *, int);
106 static void block_input(struct net_device *dev, int count,
107 struct sk_buff *skb, int ring_offset);
108 static void block_output(struct net_device *dev, int count,
109 const u_char *buf, const int start_page);
111 static dev_link_t *axnet_attach(void);
112 static void axnet_detach(dev_link_t *);
114 static dev_info_t dev_info = "axnet_cs";
115 static dev_link_t *dev_list;
117 static void axdev_setup(struct net_device *dev);
118 static void AX88190_init(struct net_device *dev, int startp);
119 static int ax_open(struct net_device *dev);
120 static int ax_close(struct net_device *dev);
121 static irqreturn_t ax_interrupt(int irq, void *dev_id, struct pt_regs *regs);
123 /*====================================================================*/
125 typedef struct axnet_dev_t {
129 struct timer_list watchdog;
130 int stale, fast_poll;
137 static inline axnet_dev_t *PRIV(struct net_device *dev)
139 void *p = (char *)netdev_priv(dev) + sizeof(struct ei_device);
143 /*======================================================================
145 axnet_attach() creates an "instance" of the driver, allocating
146 local data structures for one device. The device is registered
149 ======================================================================*/
151 static dev_link_t *axnet_attach(void)
155 struct net_device *dev;
156 client_reg_t client_reg;
159 DEBUG(0, "axnet_attach()\n");
161 dev = alloc_netdev(sizeof(struct ei_device) + sizeof(axnet_dev_t),
162 "eth%d", axdev_setup);
170 link->irq.Attributes = IRQ_TYPE_EXCLUSIVE;
171 link->irq.IRQInfo1 = IRQ_LEVEL_ID;
172 link->conf.Attributes = CONF_ENABLE_IRQ;
173 link->conf.IntType = INT_MEMORY_AND_IO;
175 dev->open = &axnet_open;
176 dev->stop = &axnet_close;
177 dev->do_ioctl = &axnet_ioctl;
178 SET_ETHTOOL_OPS(dev, &netdev_ethtool_ops);
180 /* Register with Card Services */
181 link->next = dev_list;
183 client_reg.dev_info = &dev_info;
184 client_reg.EventMask =
185 CS_EVENT_CARD_INSERTION | CS_EVENT_CARD_REMOVAL |
186 CS_EVENT_RESET_PHYSICAL | CS_EVENT_CARD_RESET |
187 CS_EVENT_PM_SUSPEND | CS_EVENT_PM_RESUME;
188 client_reg.event_handler = &axnet_event;
189 client_reg.Version = 0x0210;
190 client_reg.event_callback_args.client_data = link;
191 ret = pcmcia_register_client(&link->handle, &client_reg);
192 if (ret != CS_SUCCESS) {
193 cs_error(link->handle, RegisterClient, ret);
201 /*======================================================================
203 This deletes a driver "instance". The device is de-registered
204 with Card Services. If it has been released, all local data
205 structures are freed. Otherwise, the structures will be freed
206 when the device is released.
208 ======================================================================*/
210 static void axnet_detach(dev_link_t *link)
212 struct net_device *dev = link->priv;
215 DEBUG(0, "axnet_detach(0x%p)\n", link);
217 /* Locate device structure */
218 for (linkp = &dev_list; *linkp; linkp = &(*linkp)->next)
219 if (*linkp == link) break;
224 unregister_netdev(dev);
226 if (link->state & DEV_CONFIG)
230 pcmcia_deregister_client(link->handle);
232 /* Unlink device structure, free bits */
237 /*======================================================================
239 This probes for a card's hardware address by reading the PROM.
241 ======================================================================*/
243 static int get_prom(dev_link_t *link)
245 struct net_device *dev = link->priv;
246 kio_addr_t ioaddr = dev->base_addr;
249 /* This is based on drivers/net/ne.c */
251 u_char value, offset;
253 {E8390_NODMA+E8390_PAGE0+E8390_STOP, E8390_CMD}, /* Select page 0*/
254 {0x01, EN0_DCFG}, /* Set word-wide access. */
255 {0x00, EN0_RCNTLO}, /* Clear the count regs. */
257 {0x00, EN0_IMR}, /* Mask completion irq. */
259 {E8390_RXOFF|0x40, EN0_RXCR}, /* 0x60 Set to monitor */
260 {E8390_TXOFF, EN0_TXCR}, /* 0x02 and loopback mode. */
263 {0x00, EN0_RSARLO}, /* DMA starting at 0x0400. */
265 {E8390_RREAD+E8390_START, E8390_CMD},
268 /* Not much of a test, but the alternatives are messy */
269 if (link->conf.ConfigBase != 0x03c0)
272 axnet_reset_8390(dev);
275 for (i = 0; i < sizeof(program_seq)/sizeof(program_seq[0]); i++)
276 outb_p(program_seq[i].value, ioaddr + program_seq[i].offset);
278 for (i = 0; i < 6; i += 2) {
279 j = inw(ioaddr + AXNET_DATAPORT);
280 dev->dev_addr[i] = j & 0xff;
281 dev->dev_addr[i+1] = j >> 8;
286 /*======================================================================
288 axnet_config() is scheduled to run after a CARD_INSERTION event
289 is received, to configure the PCMCIA socket, and to make the
290 ethernet device available to the system.
292 ======================================================================*/
294 #define CS_CHECK(fn, ret) \
295 do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
297 static int try_io_port(dev_link_t *link)
300 if (link->io.NumPorts1 == 32) {
301 link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;
302 if (link->io.NumPorts2 > 0) {
303 /* for master/slave multifunction cards */
304 link->io.Attributes2 = IO_DATA_PATH_WIDTH_8;
305 link->irq.Attributes =
306 IRQ_TYPE_DYNAMIC_SHARING|IRQ_FIRST_SHARED;
309 /* This should be two 16-port windows */
310 link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
311 link->io.Attributes2 = IO_DATA_PATH_WIDTH_16;
313 if (link->io.BasePort1 == 0) {
314 link->io.IOAddrLines = 16;
315 for (j = 0; j < 0x400; j += 0x20) {
316 link->io.BasePort1 = j ^ 0x300;
317 link->io.BasePort2 = (j ^ 0x300) + 0x10;
318 ret = pcmcia_request_io(link->handle, &link->io);
319 if (ret == CS_SUCCESS) return ret;
323 return pcmcia_request_io(link->handle, &link->io);
327 static void axnet_config(dev_link_t *link)
329 client_handle_t handle = link->handle;
330 struct net_device *dev = link->priv;
331 axnet_dev_t *info = PRIV(dev);
334 int i, j, last_ret, last_fn;
338 DEBUG(0, "axnet_config(0x%p)\n", link);
340 tuple.Attributes = 0;
341 tuple.TupleData = (cisdata_t *)buf;
342 tuple.TupleDataMax = sizeof(buf);
343 tuple.TupleOffset = 0;
344 tuple.DesiredTuple = CISTPL_CONFIG;
345 CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
346 CS_CHECK(GetTupleData, pcmcia_get_tuple_data(handle, &tuple));
347 CS_CHECK(ParseTuple, pcmcia_parse_tuple(handle, &tuple, &parse));
348 link->conf.ConfigBase = parse.config.base;
349 /* don't trust the CIS on this; Linksys got it wrong */
350 link->conf.Present = 0x63;
353 link->state |= DEV_CONFIG;
355 /* Look up current Vcc */
356 CS_CHECK(GetConfigurationInfo, pcmcia_get_configuration_info(handle, &conf));
357 link->conf.Vcc = conf.Vcc;
359 tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
360 tuple.Attributes = 0;
361 CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
362 while (last_ret == CS_SUCCESS) {
363 cistpl_cftable_entry_t *cfg = &(parse.cftable_entry);
364 cistpl_io_t *io = &(parse.cftable_entry.io);
366 if (pcmcia_get_tuple_data(handle, &tuple) != 0 ||
367 pcmcia_parse_tuple(handle, &tuple, &parse) != 0 ||
368 cfg->index == 0 || cfg->io.nwin == 0)
371 link->conf.ConfigIndex = 0x05;
372 /* For multifunction cards, by convention, we configure the
373 network function with window 0, and serial with window 1 */
375 i = (io->win[1].len > io->win[0].len);
376 link->io.BasePort2 = io->win[1-i].base;
377 link->io.NumPorts2 = io->win[1-i].len;
379 i = link->io.NumPorts2 = 0;
381 link->io.BasePort1 = io->win[i].base;
382 link->io.NumPorts1 = io->win[i].len;
383 link->io.IOAddrLines = io->flags & CISTPL_IO_LINES_MASK;
384 if (link->io.NumPorts1 + link->io.NumPorts2 >= 32) {
385 last_ret = try_io_port(link);
386 if (last_ret == CS_SUCCESS) break;
389 last_ret = pcmcia_get_next_tuple(handle, &tuple);
391 if (last_ret != CS_SUCCESS) {
392 cs_error(handle, RequestIO, last_ret);
396 CS_CHECK(RequestIRQ, pcmcia_request_irq(handle, &link->irq));
398 if (link->io.NumPorts2 == 8) {
399 link->conf.Attributes |= CONF_ENABLE_SPKR;
400 link->conf.Status = CCSR_AUDIO_ENA;
403 CS_CHECK(RequestConfiguration, pcmcia_request_configuration(handle, &link->conf));
404 dev->irq = link->irq.AssignedIRQ;
405 dev->base_addr = link->io.BasePort1;
407 if (!get_prom(link)) {
408 printk(KERN_NOTICE "axnet_cs: this is not an AX88190 card!\n");
409 printk(KERN_NOTICE "axnet_cs: use pcnet_cs instead.\n");
413 ei_status.name = "AX88190";
414 ei_status.word16 = 1;
415 ei_status.tx_start_page = AXNET_START_PG;
416 ei_status.rx_start_page = AXNET_START_PG + TX_PAGES;
417 ei_status.stop_page = AXNET_STOP_PG;
418 ei_status.reset_8390 = &axnet_reset_8390;
419 ei_status.get_8390_hdr = &get_8390_hdr;
420 ei_status.block_input = &block_input;
421 ei_status.block_output = &block_output;
423 if (inb(dev->base_addr + AXNET_TEST) != 0)
424 info->flags |= IS_AX88790;
426 info->flags |= IS_AX88190;
428 if (info->flags & IS_AX88790)
429 outb(0x10, dev->base_addr + AXNET_GPIO); /* select Internal PHY */
431 for (i = 0; i < 32; i++) {
432 j = mdio_read(dev->base_addr + AXNET_MII_EEP, i, 1);
433 if ((j != 0) && (j != 0xffff)) break;
436 /* Maybe PHY is in power down mode. (PPD_SET = 1)
437 Bit 2 of CCSR is active low. */
439 conf_reg_t reg = { 0, CS_WRITE, CISREG_CCSR, 0x04 };
440 pcmcia_access_configuration_register(link->handle, ®);
441 for (i = 0; i < 32; i++) {
442 j = mdio_read(dev->base_addr + AXNET_MII_EEP, i, 1);
443 if ((j != 0) && (j != 0xffff)) break;
447 info->phy_id = (i < 32) ? i : -1;
448 link->dev = &info->node;
449 link->state &= ~DEV_CONFIG_PENDING;
450 SET_NETDEV_DEV(dev, &handle_to_dev(handle));
452 if (register_netdev(dev) != 0) {
453 printk(KERN_NOTICE "axnet_cs: register_netdev() failed\n");
458 strcpy(info->node.dev_name, dev->name);
460 printk(KERN_INFO "%s: Asix AX88%d90: io %#3lx, irq %d, hw_addr ",
461 dev->name, ((info->flags & IS_AX88790) ? 7 : 1),
462 dev->base_addr, dev->irq);
463 for (i = 0; i < 6; i++)
464 printk("%02X%s", dev->dev_addr[i], ((i<5) ? ":" : "\n"));
465 if (info->phy_id != -1) {
466 DEBUG(0, " MII transceiver at index %d, status %x.\n", info->phy_id, j);
468 printk(KERN_NOTICE " No MII transceivers found!\n");
473 cs_error(link->handle, last_fn, last_ret);
476 link->state &= ~DEV_CONFIG_PENDING;
480 /*======================================================================
482 After a card is removed, axnet_release() will unregister the net
483 device, and release the PCMCIA configuration. If the device is
484 still open, this will be postponed until it is closed.
486 ======================================================================*/
488 static void axnet_release(dev_link_t *link)
490 DEBUG(0, "axnet_release(0x%p)\n", link);
492 pcmcia_release_configuration(link->handle);
493 pcmcia_release_io(link->handle, &link->io);
494 pcmcia_release_irq(link->handle, &link->irq);
496 link->state &= ~DEV_CONFIG;
499 /*======================================================================
501 The card status event handler. Mostly, this schedules other
502 stuff to run after an event is received. A CARD_REMOVAL event
503 also sets some flags to discourage the net drivers from trying
504 to talk to the card any more.
506 ======================================================================*/
508 static int axnet_event(event_t event, int priority,
509 event_callback_args_t *args)
511 dev_link_t *link = args->client_data;
512 struct net_device *dev = link->priv;
514 DEBUG(2, "axnet_event(0x%06x)\n", event);
517 case CS_EVENT_CARD_REMOVAL:
518 link->state &= ~DEV_PRESENT;
519 if (link->state & DEV_CONFIG)
520 netif_device_detach(dev);
522 case CS_EVENT_CARD_INSERTION:
523 link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
526 case CS_EVENT_PM_SUSPEND:
527 link->state |= DEV_SUSPEND;
528 /* Fall through... */
529 case CS_EVENT_RESET_PHYSICAL:
530 if (link->state & DEV_CONFIG) {
532 netif_device_detach(dev);
533 pcmcia_release_configuration(link->handle);
536 case CS_EVENT_PM_RESUME:
537 link->state &= ~DEV_SUSPEND;
538 /* Fall through... */
539 case CS_EVENT_CARD_RESET:
540 if (link->state & DEV_CONFIG) {
541 pcmcia_request_configuration(link->handle, &link->conf);
543 axnet_reset_8390(dev);
544 AX88190_init(dev, 1);
545 netif_device_attach(dev);
553 /*======================================================================
555 MII interface support
557 ======================================================================*/
559 #define MDIO_SHIFT_CLK 0x01
560 #define MDIO_DATA_WRITE0 0x00
561 #define MDIO_DATA_WRITE1 0x08
562 #define MDIO_DATA_READ 0x04
563 #define MDIO_MASK 0x0f
564 #define MDIO_ENB_IN 0x02
566 static void mdio_sync(kio_addr_t addr)
569 for (bits = 0; bits < 32; bits++) {
570 outb_p(MDIO_DATA_WRITE1, addr);
571 outb_p(MDIO_DATA_WRITE1 | MDIO_SHIFT_CLK, addr);
575 static int mdio_read(kio_addr_t addr, int phy_id, int loc)
577 u_int cmd = (0xf6<<10)|(phy_id<<5)|loc;
581 for (i = 14; i >= 0; i--) {
582 int dat = (cmd&(1<<i)) ? MDIO_DATA_WRITE1 : MDIO_DATA_WRITE0;
584 outb_p(dat | MDIO_SHIFT_CLK, addr);
586 for (i = 19; i > 0; i--) {
587 outb_p(MDIO_ENB_IN, addr);
588 retval = (retval << 1) | ((inb_p(addr) & MDIO_DATA_READ) != 0);
589 outb_p(MDIO_ENB_IN | MDIO_SHIFT_CLK, addr);
591 return (retval>>1) & 0xffff;
594 static void mdio_write(kio_addr_t addr, int phy_id, int loc, int value)
596 u_int cmd = (0x05<<28)|(phy_id<<23)|(loc<<18)|(1<<17)|value;
600 for (i = 31; i >= 0; i--) {
601 int dat = (cmd&(1<<i)) ? MDIO_DATA_WRITE1 : MDIO_DATA_WRITE0;
603 outb_p(dat | MDIO_SHIFT_CLK, addr);
605 for (i = 1; i >= 0; i--) {
606 outb_p(MDIO_ENB_IN, addr);
607 outb_p(MDIO_ENB_IN | MDIO_SHIFT_CLK, addr);
611 /*====================================================================*/
613 static int axnet_open(struct net_device *dev)
615 axnet_dev_t *info = PRIV(dev);
616 dev_link_t *link = &info->link;
618 DEBUG(2, "axnet_open('%s')\n", dev->name);
625 request_irq(dev->irq, ei_irq_wrapper, SA_SHIRQ, dev_info, dev);
627 info->link_status = 0x00;
628 init_timer(&info->watchdog);
629 info->watchdog.function = &ei_watchdog;
630 info->watchdog.data = (u_long)dev;
631 info->watchdog.expires = jiffies + HZ;
632 add_timer(&info->watchdog);
637 /*====================================================================*/
639 static int axnet_close(struct net_device *dev)
641 axnet_dev_t *info = PRIV(dev);
642 dev_link_t *link = &info->link;
644 DEBUG(2, "axnet_close('%s')\n", dev->name);
647 free_irq(dev->irq, dev);
650 netif_stop_queue(dev);
651 del_timer_sync(&info->watchdog);
656 /*======================================================================
658 Hard reset the card. This used to pause for the same period that
659 a 8390 reset command required, but that shouldn't be necessary.
661 ======================================================================*/
663 static void axnet_reset_8390(struct net_device *dev)
665 kio_addr_t nic_base = dev->base_addr;
668 ei_status.txing = ei_status.dmaing = 0;
670 outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, nic_base + E8390_CMD);
672 outb(inb(nic_base + AXNET_RESET), nic_base + AXNET_RESET);
674 for (i = 0; i < 100; i++) {
675 if ((inb_p(nic_base+EN0_ISR) & ENISR_RESET) != 0)
679 outb_p(ENISR_RESET, nic_base + EN0_ISR); /* Ack intr. */
682 printk(KERN_ERR "%s: axnet_reset_8390() did not complete.\n",
685 } /* axnet_reset_8390 */
687 /*====================================================================*/
689 static irqreturn_t ei_irq_wrapper(int irq, void *dev_id, struct pt_regs *regs)
691 struct net_device *dev = dev_id;
692 PRIV(dev)->stale = 0;
693 return ax_interrupt(irq, dev_id, regs);
696 static void ei_watchdog(u_long arg)
698 struct net_device *dev = (struct net_device *)(arg);
699 axnet_dev_t *info = PRIV(dev);
700 kio_addr_t nic_base = dev->base_addr;
701 kio_addr_t mii_addr = nic_base + AXNET_MII_EEP;
704 if (!netif_device_present(dev)) goto reschedule;
706 /* Check for pending interrupt with expired latency timer: with
707 this, we can limp along even if the interrupt is blocked */
708 if (info->stale++ && (inb_p(nic_base + EN0_ISR) & ENISR_ALL)) {
709 if (!info->fast_poll)
710 printk(KERN_INFO "%s: interrupt(s) dropped!\n", dev->name);
711 ei_irq_wrapper(dev->irq, dev, NULL);
712 info->fast_poll = HZ;
714 if (info->fast_poll) {
716 info->watchdog.expires = jiffies + 1;
717 add_timer(&info->watchdog);
721 if (info->phy_id < 0)
723 link = mdio_read(mii_addr, info->phy_id, 1);
724 if (!link || (link == 0xffff)) {
725 printk(KERN_INFO "%s: MII is missing!\n", dev->name);
731 if (link != info->link_status) {
732 u_short p = mdio_read(mii_addr, info->phy_id, 5);
733 printk(KERN_INFO "%s: %s link beat\n", dev->name,
734 (link) ? "found" : "lost");
736 info->duplex_flag = (p & 0x0140) ? 0x80 : 0x00;
738 printk(KERN_INFO "%s: autonegotiation complete: "
739 "%sbaseT-%cD selected\n", dev->name,
740 ((p & 0x0180) ? "100" : "10"),
741 ((p & 0x0140) ? 'F' : 'H'));
743 printk(KERN_INFO "%s: link partner did not autonegotiate\n",
745 AX88190_init(dev, 1);
747 info->link_status = link;
751 info->watchdog.expires = jiffies + HZ;
752 add_timer(&info->watchdog);
755 static void netdev_get_drvinfo(struct net_device *dev,
756 struct ethtool_drvinfo *info)
758 strcpy(info->driver, "axnet_cs");
761 static struct ethtool_ops netdev_ethtool_ops = {
762 .get_drvinfo = netdev_get_drvinfo,
765 /*====================================================================*/
767 static int axnet_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
769 axnet_dev_t *info = PRIV(dev);
770 u16 *data = (u16 *)&rq->ifr_ifru;
771 kio_addr_t mii_addr = dev->base_addr + AXNET_MII_EEP;
774 data[0] = info->phy_id;
775 case SIOCGMIIREG: /* Read MII PHY register. */
776 data[3] = mdio_read(mii_addr, data[0], data[1] & 0x1f);
778 case SIOCSMIIREG: /* Write MII PHY register. */
779 if (!capable(CAP_NET_ADMIN))
781 mdio_write(mii_addr, data[0], data[1] & 0x1f, data[2]);
787 /*====================================================================*/
789 static void get_8390_hdr(struct net_device *dev,
790 struct e8390_pkt_hdr *hdr,
793 kio_addr_t nic_base = dev->base_addr;
795 outb_p(0, nic_base + EN0_RSARLO); /* On page boundary */
796 outb_p(ring_page, nic_base + EN0_RSARHI);
797 outb_p(E8390_RREAD+E8390_START, nic_base + AXNET_CMD);
799 insw(nic_base + AXNET_DATAPORT, hdr,
800 sizeof(struct e8390_pkt_hdr)>>1);
801 /* Fix for big endian systems */
802 hdr->count = le16_to_cpu(hdr->count);
806 /*====================================================================*/
808 static void block_input(struct net_device *dev, int count,
809 struct sk_buff *skb, int ring_offset)
811 kio_addr_t nic_base = dev->base_addr;
812 int xfer_count = count;
813 char *buf = skb->data;
816 if ((ei_debug > 4) && (count != 4))
817 printk(KERN_DEBUG "%s: [bi=%d]\n", dev->name, count+4);
819 outb_p(ring_offset & 0xff, nic_base + EN0_RSARLO);
820 outb_p(ring_offset >> 8, nic_base + EN0_RSARHI);
821 outb_p(E8390_RREAD+E8390_START, nic_base + AXNET_CMD);
823 insw(nic_base + AXNET_DATAPORT,buf,count>>1);
825 buf[count-1] = inb(nic_base + AXNET_DATAPORT), xfer_count++;
829 /*====================================================================*/
831 static void block_output(struct net_device *dev, int count,
832 const u_char *buf, const int start_page)
834 kio_addr_t nic_base = dev->base_addr;
838 printk(KERN_DEBUG "%s: [bo=%d]\n", dev->name, count);
841 /* Round the count up for word writes. Do we need to do this?
842 What effect will an odd byte count have on the 8390?
843 I should check someday. */
847 outb_p(0x00, nic_base + EN0_RSARLO);
848 outb_p(start_page, nic_base + EN0_RSARHI);
849 outb_p(E8390_RWRITE+E8390_START, nic_base + AXNET_CMD);
850 outsw(nic_base + AXNET_DATAPORT, buf, count>>1);
853 static struct pcmcia_device_id axnet_ids[] = {
854 PCMCIA_PFC_DEVICE_MANF_CARD(0, 0x016c, 0x0081),
855 PCMCIA_DEVICE_MANF_CARD(0x018a, 0x0301),
856 PCMCIA_DEVICE_MANF_CARD(0x026f, 0x0301),
857 PCMCIA_DEVICE_MANF_CARD(0x026f, 0x0303),
858 PCMCIA_DEVICE_MANF_CARD(0x026f, 0x0309),
859 PCMCIA_DEVICE_MANF_CARD(0x0274, 0x1106),
860 PCMCIA_DEVICE_MANF_CARD(0x8a01, 0xc1ab),
861 PCMCIA_DEVICE_PROD_ID124("Fast Ethernet", "16-bit PC Card", "AX88190", 0xb4be14e3, 0x9a12eb6a, 0xab9be5ef),
862 PCMCIA_DEVICE_PROD_ID12("ASIX", "AX88190", 0x0959823b, 0xab9be5ef),
863 PCMCIA_DEVICE_PROD_ID12("Billionton", "LNA-100B", 0x552ab682, 0xbc3b87e1),
864 PCMCIA_DEVICE_PROD_ID12("CHEETAH ETHERCARD", "EN2228", 0x00fa7bc8, 0x00e990cc),
865 PCMCIA_DEVICE_PROD_ID12("CNet", "CNF301", 0xbc477dde, 0x78c5f40b),
866 PCMCIA_DEVICE_PROD_ID12("corega K.K.", "corega FEther PCC-TXD", 0x5261440f, 0x436768c5),
867 PCMCIA_DEVICE_PROD_ID12("corega K.K.", "corega FEtherII PCC-TXD", 0x5261440f, 0x730df72e),
868 PCMCIA_DEVICE_PROD_ID12("Dynalink", "L100C16", 0x55632fd5, 0x66bc2a90),
869 PCMCIA_DEVICE_PROD_ID12("Linksys", "EtherFast 10/100 PC Card (PCMPC100 V3)", 0x0733cc81, 0x232019a8),
870 PCMCIA_DEVICE_PROD_ID12("MELCO", "LPC3-TX", 0x481e0094, 0xf91af609),
871 PCMCIA_DEVICE_PROD_ID12("PCMCIA", "100BASE", 0x281f1c5d, 0x7c2add04),
872 PCMCIA_DEVICE_PROD_ID12("PCMCIA", "FastEtherCard", 0x281f1c5d, 0x7ef26116),
873 PCMCIA_DEVICE_PROD_ID12("PCMCIA", "FEP501", 0x281f1c5d, 0x2e272058),
874 PCMCIA_DEVICE_PROD_ID14("Network Everywhere", "AX88190", 0x820a67b6, 0xab9be5ef),
875 /* this is not specific enough */
876 /* PCMCIA_DEVICE_MANF_CARD(0x021b, 0x0202), */
879 MODULE_DEVICE_TABLE(pcmcia, axnet_ids);
881 static struct pcmcia_driver axnet_cs_driver = {
882 .owner = THIS_MODULE,
886 .attach = axnet_attach,
887 .detach = axnet_detach,
888 .id_table = axnet_ids,
891 static int __init init_axnet_cs(void)
893 return pcmcia_register_driver(&axnet_cs_driver);
896 static void __exit exit_axnet_cs(void)
898 pcmcia_unregister_driver(&axnet_cs_driver);
899 BUG_ON(dev_list != NULL);
902 module_init(init_axnet_cs);
903 module_exit(exit_axnet_cs);
905 /*====================================================================*/
907 /* 8390.c: A general NS8390 ethernet driver core for linux. */
909 Written 1992-94 by Donald Becker.
911 Copyright 1993 United States Government as represented by the
912 Director, National Security Agency.
914 This software may be used and distributed according to the terms
915 of the GNU General Public License, incorporated herein by reference.
917 The author may be reached as becker@scyld.com, or C/O
918 Scyld Computing Corporation
919 410 Severn Ave., Suite 210
922 This is the chip-specific code for many 8390-based ethernet adaptors.
923 This is not a complete driver, it must be combined with board-specific
924 code such as ne.c, wd.c, 3c503.c, etc.
926 Seeing how at least eight drivers use this code, (not counting the
927 PCMCIA ones either) it is easy to break some card by what seems like
928 a simple innocent change. Please contact me or Donald if you think
929 you have found something that needs changing. -- PG
933 Paul Gortmaker : remove set_bit lock, other cleanups.
934 Paul Gortmaker : add ei_get_8390_hdr() so we can pass skb's to
935 ei_block_input() for eth_io_copy_and_sum().
936 Paul Gortmaker : exchange static int ei_pingpong for a #define,
937 also add better Tx error handling.
938 Paul Gortmaker : rewrite Rx overrun handling as per NS specs.
939 Alexey Kuznetsov : use the 8390's six bit hash multicast filter.
940 Paul Gortmaker : tweak ANK's above multicast changes a bit.
941 Paul Gortmaker : update packet statistics for v2.1.x
942 Alan Cox : support arbitary stupid port mappings on the
943 68K Macintosh. Support >16bit I/O spaces
944 Paul Gortmaker : add kmod support for auto-loading of the 8390
945 module by all drivers that require it.
946 Alan Cox : Spinlocking work, added 'BUG_83C690'
947 Paul Gortmaker : Separate out Tx timeout code from Tx path.
950 The National Semiconductor LAN Databook, and the 3Com 3c503 databook.
954 static const char *version_8390 =
955 "8390.c:v1.10cvs 9/23/94 Donald Becker (becker@scyld.com)\n";
957 #include <linux/bitops.h>
959 #include <linux/fcntl.h>
960 #include <linux/in.h>
961 #include <linux/interrupt.h>
963 #include <linux/etherdevice.h>
967 /* These are the operational function interfaces to board-specific
969 void reset_8390(struct net_device *dev)
970 Resets the board associated with DEV, including a hardware reset of
971 the 8390. This is only called when there is a transmit timeout, and
972 it is always followed by 8390_init().
973 void block_output(struct net_device *dev, int count, const unsigned char *buf,
975 Write the COUNT bytes of BUF to the packet buffer at START_PAGE. The
976 "page" value uses the 8390's 256-byte pages.
977 void get_8390_hdr(struct net_device *dev, struct e8390_hdr *hdr, int ring_page)
978 Read the 4 byte, page aligned 8390 header. *If* there is a
979 subsequent read, it will be of the rest of the packet.
980 void block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset)
981 Read COUNT bytes from the packet buffer into the skb data area. Start
982 reading from RING_OFFSET, the address as the 8390 sees it. This will always
983 follow the read of the 8390 header.
985 #define ei_reset_8390 (ei_local->reset_8390)
986 #define ei_block_output (ei_local->block_output)
987 #define ei_block_input (ei_local->block_input)
988 #define ei_get_8390_hdr (ei_local->get_8390_hdr)
990 /* use 0 for production, 1 for verification, >2 for debug */
995 /* Index to functions. */
996 static void ei_tx_intr(struct net_device *dev);
997 static void ei_tx_err(struct net_device *dev);
998 static void ei_tx_timeout(struct net_device *dev);
999 static void ei_receive(struct net_device *dev);
1000 static void ei_rx_overrun(struct net_device *dev);
1002 /* Routines generic to NS8390-based boards. */
1003 static void NS8390_trigger_send(struct net_device *dev, unsigned int length,
1005 static void set_multicast_list(struct net_device *dev);
1006 static void do_set_multicast_list(struct net_device *dev);
1009 * SMP and the 8390 setup.
1011 * The 8390 isnt exactly designed to be multithreaded on RX/TX. There is
1012 * a page register that controls bank and packet buffer access. We guard
1013 * this with ei_local->page_lock. Nobody should assume or set the page other
1014 * than zero when the lock is not held. Lock holders must restore page 0
1015 * before unlocking. Even pure readers must take the lock to protect in
1018 * To make life difficult the chip can also be very slow. We therefore can't
1019 * just use spinlocks. For the longer lockups we disable the irq the device
1020 * sits on and hold the lock. We must hold the lock because there is a dual
1021 * processor case other than interrupts (get stats/set multicast list in
1022 * parallel with each other and transmit).
1024 * Note: in theory we can just disable the irq on the card _but_ there is
1025 * a latency on SMP irq delivery. So we can easily go "disable irq" "sync irqs"
1026 * enter lock, take the queued irq. So we waddle instead of flying.
1028 * Finally by special arrangement for the purpose of being generally
1029 * annoying the transmit function is called bh atomic. That places
1030 * restrictions on the user context callers as disable_irq won't save
1035 * ax_open - Open/initialize the board.
1036 * @dev: network device to initialize
1038 * This routine goes all-out, setting everything
1039 * up anew at each open, even though many of these registers should only
1040 * need to be set once at boot.
1042 static int ax_open(struct net_device *dev)
1044 unsigned long flags;
1045 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1047 #ifdef HAVE_TX_TIMEOUT
1048 /* The card I/O part of the driver (e.g. 3c503) can hook a Tx timeout
1049 wrapper that does e.g. media check & then calls ei_tx_timeout. */
1050 if (dev->tx_timeout == NULL)
1051 dev->tx_timeout = ei_tx_timeout;
1052 if (dev->watchdog_timeo <= 0)
1053 dev->watchdog_timeo = TX_TIMEOUT;
1057 * Grab the page lock so we own the register set, then call
1058 * the init function.
1061 spin_lock_irqsave(&ei_local->page_lock, flags);
1062 AX88190_init(dev, 1);
1063 /* Set the flag before we drop the lock, That way the IRQ arrives
1064 after its set and we get no silly warnings */
1065 netif_start_queue(dev);
1066 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1067 ei_local->irqlock = 0;
1071 #define dev_lock(dev) (((struct ei_device *)netdev_priv(dev))->page_lock)
1074 * ax_close - shut down network device
1075 * @dev: network device to close
1077 * Opposite of ax_open(). Only used when "ifconfig <devname> down" is done.
1079 int ax_close(struct net_device *dev)
1081 unsigned long flags;
1084 * Hold the page lock during close
1087 spin_lock_irqsave(&dev_lock(dev), flags);
1088 AX88190_init(dev, 0);
1089 spin_unlock_irqrestore(&dev_lock(dev), flags);
1090 netif_stop_queue(dev);
1095 * ei_tx_timeout - handle transmit time out condition
1096 * @dev: network device which has apparently fallen asleep
1098 * Called by kernel when device never acknowledges a transmit has
1099 * completed (or failed) - i.e. never posted a Tx related interrupt.
1102 void ei_tx_timeout(struct net_device *dev)
1104 long e8390_base = dev->base_addr;
1105 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1106 int txsr, isr, tickssofar = jiffies - dev->trans_start;
1107 unsigned long flags;
1109 ei_local->stat.tx_errors++;
1111 spin_lock_irqsave(&ei_local->page_lock, flags);
1112 txsr = inb(e8390_base+EN0_TSR);
1113 isr = inb(e8390_base+EN0_ISR);
1114 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1116 printk(KERN_DEBUG "%s: Tx timed out, %s TSR=%#2x, ISR=%#2x, t=%d.\n",
1117 dev->name, (txsr & ENTSR_ABT) ? "excess collisions." :
1118 (isr) ? "lost interrupt?" : "cable problem?", txsr, isr, tickssofar);
1120 if (!isr && !ei_local->stat.tx_packets)
1122 /* The 8390 probably hasn't gotten on the cable yet. */
1123 ei_local->interface_num ^= 1; /* Try a different xcvr. */
1126 /* Ugly but a reset can be slow, yet must be protected */
1128 disable_irq_nosync(dev->irq);
1129 spin_lock(&ei_local->page_lock);
1131 /* Try to restart the card. Perhaps the user has fixed something. */
1133 AX88190_init(dev, 1);
1135 spin_unlock(&ei_local->page_lock);
1136 enable_irq(dev->irq);
1137 netif_wake_queue(dev);
1141 * ei_start_xmit - begin packet transmission
1142 * @skb: packet to be sent
1143 * @dev: network device to which packet is sent
1145 * Sends a packet to an 8390 network device.
1148 static int ei_start_xmit(struct sk_buff *skb, struct net_device *dev)
1150 long e8390_base = dev->base_addr;
1151 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1152 int length, send_length, output_page;
1153 unsigned long flags;
1154 u8 packet[ETH_ZLEN];
1156 netif_stop_queue(dev);
1160 /* Mask interrupts from the ethercard.
1161 SMP: We have to grab the lock here otherwise the IRQ handler
1162 on another CPU can flip window and race the IRQ mask set. We end
1163 up trashing the mcast filter not disabling irqs if we don't lock */
1165 spin_lock_irqsave(&ei_local->page_lock, flags);
1166 outb_p(0x00, e8390_base + EN0_IMR);
1167 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1170 * Slow phase with lock held.
1173 disable_irq_nosync(dev->irq);
1175 spin_lock(&ei_local->page_lock);
1177 ei_local->irqlock = 1;
1179 send_length = ETH_ZLEN < length ? length : ETH_ZLEN;
1182 * We have two Tx slots available for use. Find the first free
1183 * slot, and then perform some sanity checks. With two Tx bufs,
1184 * you get very close to transmitting back-to-back packets. With
1185 * only one Tx buf, the transmitter sits idle while you reload the
1186 * card, leaving a substantial gap between each transmitted packet.
1189 if (ei_local->tx1 == 0)
1191 output_page = ei_local->tx_start_page;
1192 ei_local->tx1 = send_length;
1193 if (ei_debug && ei_local->tx2 > 0)
1194 printk(KERN_DEBUG "%s: idle transmitter tx2=%d, lasttx=%d, txing=%d.\n",
1195 dev->name, ei_local->tx2, ei_local->lasttx, ei_local->txing);
1197 else if (ei_local->tx2 == 0)
1199 output_page = ei_local->tx_start_page + TX_PAGES/2;
1200 ei_local->tx2 = send_length;
1201 if (ei_debug && ei_local->tx1 > 0)
1202 printk(KERN_DEBUG "%s: idle transmitter, tx1=%d, lasttx=%d, txing=%d.\n",
1203 dev->name, ei_local->tx1, ei_local->lasttx, ei_local->txing);
1206 { /* We should never get here. */
1208 printk(KERN_DEBUG "%s: No Tx buffers free! tx1=%d tx2=%d last=%d\n",
1209 dev->name, ei_local->tx1, ei_local->tx2, ei_local->lasttx);
1210 ei_local->irqlock = 0;
1211 netif_stop_queue(dev);
1212 outb_p(ENISR_ALL, e8390_base + EN0_IMR);
1213 spin_unlock(&ei_local->page_lock);
1214 enable_irq(dev->irq);
1215 ei_local->stat.tx_errors++;
1220 * Okay, now upload the packet and trigger a send if the transmitter
1221 * isn't already sending. If it is busy, the interrupt handler will
1222 * trigger the send later, upon receiving a Tx done interrupt.
1225 if (length == skb->len)
1226 ei_block_output(dev, length, skb->data, output_page);
1228 memset(packet, 0, ETH_ZLEN);
1229 memcpy(packet, skb->data, skb->len);
1230 ei_block_output(dev, length, packet, output_page);
1233 if (! ei_local->txing)
1235 ei_local->txing = 1;
1236 NS8390_trigger_send(dev, send_length, output_page);
1237 dev->trans_start = jiffies;
1238 if (output_page == ei_local->tx_start_page)
1241 ei_local->lasttx = -1;
1246 ei_local->lasttx = -2;
1249 else ei_local->txqueue++;
1251 if (ei_local->tx1 && ei_local->tx2)
1252 netif_stop_queue(dev);
1254 netif_start_queue(dev);
1256 /* Turn 8390 interrupts back on. */
1257 ei_local->irqlock = 0;
1258 outb_p(ENISR_ALL, e8390_base + EN0_IMR);
1260 spin_unlock(&ei_local->page_lock);
1261 enable_irq(dev->irq);
1263 dev_kfree_skb (skb);
1264 ei_local->stat.tx_bytes += send_length;
1270 * ax_interrupt - handle the interrupts from an 8390
1271 * @irq: interrupt number
1272 * @dev_id: a pointer to the net_device
1275 * Handle the ether interface interrupts. We pull packets from
1276 * the 8390 via the card specific functions and fire them at the networking
1277 * stack. We also handle transmit completions and wake the transmit path if
1278 * necessary. We also update the counters and do other housekeeping as
1282 static irqreturn_t ax_interrupt(int irq, void *dev_id, struct pt_regs * regs)
1284 struct net_device *dev = dev_id;
1286 int interrupts, nr_serviced = 0, i;
1287 struct ei_device *ei_local;
1292 printk ("net_interrupt(): irq %d for unknown device.\n", irq);
1296 e8390_base = dev->base_addr;
1297 ei_local = (struct ei_device *) netdev_priv(dev);
1300 * Protect the irq test too.
1303 spin_lock(&ei_local->page_lock);
1305 if (ei_local->irqlock)
1307 #if 1 /* This might just be an interrupt for a PCI device sharing this line */
1308 /* The "irqlock" check is only for testing. */
1309 printk(ei_local->irqlock
1310 ? "%s: Interrupted while interrupts are masked! isr=%#2x imr=%#2x.\n"
1311 : "%s: Reentering the interrupt handler! isr=%#2x imr=%#2x.\n",
1312 dev->name, inb_p(e8390_base + EN0_ISR),
1313 inb_p(e8390_base + EN0_IMR));
1315 spin_unlock(&ei_local->page_lock);
1320 printk(KERN_DEBUG "%s: interrupt(isr=%#2.2x).\n", dev->name,
1321 inb_p(e8390_base + EN0_ISR));
1323 outb_p(0x00, e8390_base + EN0_ISR);
1324 ei_local->irqlock = 1;
1326 /* !!Assumption!! -- we stay in page 0. Don't break this. */
1327 while ((interrupts = inb_p(e8390_base + EN0_ISR)) != 0
1328 && ++nr_serviced < MAX_SERVICE)
1330 if (!netif_running(dev) || (interrupts == 0xff)) {
1332 printk(KERN_WARNING "%s: interrupt from stopped card\n", dev->name);
1333 outb_p(interrupts, e8390_base + EN0_ISR);
1339 /* AX88190 bug fix. */
1340 outb_p(interrupts, e8390_base + EN0_ISR);
1341 for (i = 0; i < 10; i++) {
1342 if (!(inb(e8390_base + EN0_ISR) & interrupts))
1344 outb_p(0, e8390_base + EN0_ISR);
1345 outb_p(interrupts, e8390_base + EN0_ISR);
1347 if (interrupts & ENISR_OVER)
1349 else if (interrupts & (ENISR_RX+ENISR_RX_ERR))
1351 /* Got a good (?) packet. */
1354 /* Push the next to-transmit packet through. */
1355 if (interrupts & ENISR_TX)
1357 else if (interrupts & ENISR_TX_ERR)
1360 if (interrupts & ENISR_COUNTERS)
1362 ei_local->stat.rx_frame_errors += inb_p(e8390_base + EN0_COUNTER0);
1363 ei_local->stat.rx_crc_errors += inb_p(e8390_base + EN0_COUNTER1);
1364 ei_local->stat.rx_missed_errors+= inb_p(e8390_base + EN0_COUNTER2);
1368 if (interrupts && ei_debug)
1371 if (nr_serviced >= MAX_SERVICE)
1373 /* 0xFF is valid for a card removal */
1374 if(interrupts!=0xFF)
1375 printk(KERN_WARNING "%s: Too much work at interrupt, status %#2.2x\n",
1376 dev->name, interrupts);
1377 outb_p(ENISR_ALL, e8390_base + EN0_ISR); /* Ack. most intrs. */
1379 printk(KERN_WARNING "%s: unknown interrupt %#2x\n", dev->name, interrupts);
1380 outb_p(0xff, e8390_base + EN0_ISR); /* Ack. all intrs. */
1384 /* Turn 8390 interrupts back on. */
1385 ei_local->irqlock = 0;
1386 outb_p(ENISR_ALL, e8390_base + EN0_IMR);
1388 spin_unlock(&ei_local->page_lock);
1389 return IRQ_RETVAL(handled);
1393 * ei_tx_err - handle transmitter error
1394 * @dev: network device which threw the exception
1396 * A transmitter error has happened. Most likely excess collisions (which
1397 * is a fairly normal condition). If the error is one where the Tx will
1398 * have been aborted, we try and send another one right away, instead of
1399 * letting the failed packet sit and collect dust in the Tx buffer. This
1400 * is a much better solution as it avoids kernel based Tx timeouts, and
1401 * an unnecessary card reset.
1403 * Called with lock held.
1406 static void ei_tx_err(struct net_device *dev)
1408 long e8390_base = dev->base_addr;
1409 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1410 unsigned char txsr = inb_p(e8390_base+EN0_TSR);
1411 unsigned char tx_was_aborted = txsr & (ENTSR_ABT+ENTSR_FU);
1413 #ifdef VERBOSE_ERROR_DUMP
1414 printk(KERN_DEBUG "%s: transmitter error (%#2x): ", dev->name, txsr);
1415 if (txsr & ENTSR_ABT)
1416 printk("excess-collisions ");
1417 if (txsr & ENTSR_ND)
1418 printk("non-deferral ");
1419 if (txsr & ENTSR_CRS)
1420 printk("lost-carrier ");
1421 if (txsr & ENTSR_FU)
1422 printk("FIFO-underrun ");
1423 if (txsr & ENTSR_CDH)
1424 printk("lost-heartbeat ");
1432 ei_local->stat.tx_errors++;
1433 if (txsr & ENTSR_CRS) ei_local->stat.tx_carrier_errors++;
1434 if (txsr & ENTSR_CDH) ei_local->stat.tx_heartbeat_errors++;
1435 if (txsr & ENTSR_OWC) ei_local->stat.tx_window_errors++;
1440 * ei_tx_intr - transmit interrupt handler
1441 * @dev: network device for which tx intr is handled
1443 * We have finished a transmit: check for errors and then trigger the next
1444 * packet to be sent. Called with lock held.
1447 static void ei_tx_intr(struct net_device *dev)
1449 long e8390_base = dev->base_addr;
1450 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1451 int status = inb(e8390_base + EN0_TSR);
1454 * There are two Tx buffers, see which one finished, and trigger
1455 * the send of another one if it exists.
1457 ei_local->txqueue--;
1459 if (ei_local->tx1 < 0)
1461 if (ei_local->lasttx != 1 && ei_local->lasttx != -1)
1462 printk(KERN_ERR "%s: bogus last_tx_buffer %d, tx1=%d.\n",
1463 ei_local->name, ei_local->lasttx, ei_local->tx1);
1465 if (ei_local->tx2 > 0)
1467 ei_local->txing = 1;
1468 NS8390_trigger_send(dev, ei_local->tx2, ei_local->tx_start_page + 6);
1469 dev->trans_start = jiffies;
1471 ei_local->lasttx = 2;
1473 else ei_local->lasttx = 20, ei_local->txing = 0;
1475 else if (ei_local->tx2 < 0)
1477 if (ei_local->lasttx != 2 && ei_local->lasttx != -2)
1478 printk("%s: bogus last_tx_buffer %d, tx2=%d.\n",
1479 ei_local->name, ei_local->lasttx, ei_local->tx2);
1481 if (ei_local->tx1 > 0)
1483 ei_local->txing = 1;
1484 NS8390_trigger_send(dev, ei_local->tx1, ei_local->tx_start_page);
1485 dev->trans_start = jiffies;
1487 ei_local->lasttx = 1;
1490 ei_local->lasttx = 10, ei_local->txing = 0;
1492 // else printk(KERN_WARNING "%s: unexpected TX-done interrupt, lasttx=%d.\n",
1493 // dev->name, ei_local->lasttx);
1495 /* Minimize Tx latency: update the statistics after we restart TXing. */
1496 if (status & ENTSR_COL)
1497 ei_local->stat.collisions++;
1498 if (status & ENTSR_PTX)
1499 ei_local->stat.tx_packets++;
1502 ei_local->stat.tx_errors++;
1503 if (status & ENTSR_ABT)
1505 ei_local->stat.tx_aborted_errors++;
1506 ei_local->stat.collisions += 16;
1508 if (status & ENTSR_CRS)
1509 ei_local->stat.tx_carrier_errors++;
1510 if (status & ENTSR_FU)
1511 ei_local->stat.tx_fifo_errors++;
1512 if (status & ENTSR_CDH)
1513 ei_local->stat.tx_heartbeat_errors++;
1514 if (status & ENTSR_OWC)
1515 ei_local->stat.tx_window_errors++;
1517 netif_wake_queue(dev);
1521 * ei_receive - receive some packets
1522 * @dev: network device with which receive will be run
1524 * We have a good packet(s), get it/them out of the buffers.
1525 * Called with lock held.
1528 static void ei_receive(struct net_device *dev)
1530 long e8390_base = dev->base_addr;
1531 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1532 unsigned char rxing_page, this_frame, next_frame;
1533 unsigned short current_offset;
1534 int rx_pkt_count = 0;
1535 struct e8390_pkt_hdr rx_frame;
1537 while (++rx_pkt_count < 10)
1539 int pkt_len, pkt_stat;
1541 /* Get the rx page (incoming packet pointer). */
1542 rxing_page = inb_p(e8390_base + EN1_CURPAG -1);
1544 /* Remove one frame from the ring. Boundary is always a page behind. */
1545 this_frame = inb_p(e8390_base + EN0_BOUNDARY) + 1;
1546 if (this_frame >= ei_local->stop_page)
1547 this_frame = ei_local->rx_start_page;
1549 /* Someday we'll omit the previous, iff we never get this message.
1550 (There is at least one clone claimed to have a problem.)
1552 Keep quiet if it looks like a card removal. One problem here
1553 is that some clones crash in roughly the same way.
1555 if (ei_debug > 0 && this_frame != ei_local->current_page && (this_frame!=0x0 || rxing_page!=0xFF))
1556 printk(KERN_ERR "%s: mismatched read page pointers %2x vs %2x.\n",
1557 dev->name, this_frame, ei_local->current_page);
1559 if (this_frame == rxing_page) /* Read all the frames? */
1560 break; /* Done for now */
1562 current_offset = this_frame << 8;
1563 ei_get_8390_hdr(dev, &rx_frame, this_frame);
1565 pkt_len = rx_frame.count - sizeof(struct e8390_pkt_hdr);
1566 pkt_stat = rx_frame.status;
1568 next_frame = this_frame + 1 + ((pkt_len+4)>>8);
1570 if (pkt_len < 60 || pkt_len > 1518)
1573 printk(KERN_DEBUG "%s: bogus packet size: %d, status=%#2x nxpg=%#2x.\n",
1574 dev->name, rx_frame.count, rx_frame.status,
1576 ei_local->stat.rx_errors++;
1577 ei_local->stat.rx_length_errors++;
1579 else if ((pkt_stat & 0x0F) == ENRSR_RXOK)
1581 struct sk_buff *skb;
1583 skb = dev_alloc_skb(pkt_len+2);
1587 printk(KERN_DEBUG "%s: Couldn't allocate a sk_buff of size %d.\n",
1588 dev->name, pkt_len);
1589 ei_local->stat.rx_dropped++;
1594 skb_reserve(skb,2); /* IP headers on 16 byte boundaries */
1596 skb_put(skb, pkt_len); /* Make room */
1597 ei_block_input(dev, pkt_len, skb, current_offset + sizeof(rx_frame));
1598 skb->protocol=eth_type_trans(skb,dev);
1600 dev->last_rx = jiffies;
1601 ei_local->stat.rx_packets++;
1602 ei_local->stat.rx_bytes += pkt_len;
1603 if (pkt_stat & ENRSR_PHY)
1604 ei_local->stat.multicast++;
1610 printk(KERN_DEBUG "%s: bogus packet: status=%#2x nxpg=%#2x size=%d\n",
1611 dev->name, rx_frame.status, rx_frame.next,
1613 ei_local->stat.rx_errors++;
1614 /* NB: The NIC counts CRC, frame and missed errors. */
1615 if (pkt_stat & ENRSR_FO)
1616 ei_local->stat.rx_fifo_errors++;
1618 next_frame = rx_frame.next;
1620 /* This _should_ never happen: it's here for avoiding bad clones. */
1621 if (next_frame >= ei_local->stop_page) {
1622 printk("%s: next frame inconsistency, %#2x\n", dev->name,
1624 next_frame = ei_local->rx_start_page;
1626 ei_local->current_page = next_frame;
1627 outb_p(next_frame-1, e8390_base+EN0_BOUNDARY);
1634 * ei_rx_overrun - handle receiver overrun
1635 * @dev: network device which threw exception
1637 * We have a receiver overrun: we have to kick the 8390 to get it started
1638 * again. Problem is that you have to kick it exactly as NS prescribes in
1639 * the updated datasheets, or "the NIC may act in an unpredictable manner."
1640 * This includes causing "the NIC to defer indefinitely when it is stopped
1641 * on a busy network." Ugh.
1642 * Called with lock held. Don't call this with the interrupts off or your
1643 * computer will hate you - it takes 10ms or so.
1646 static void ei_rx_overrun(struct net_device *dev)
1648 axnet_dev_t *info = (axnet_dev_t *)dev;
1649 long e8390_base = dev->base_addr;
1650 unsigned char was_txing, must_resend = 0;
1651 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1654 * Record whether a Tx was in progress and then issue the
1657 was_txing = inb_p(e8390_base+E8390_CMD) & E8390_TRANS;
1658 outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD);
1661 printk(KERN_DEBUG "%s: Receiver overrun.\n", dev->name);
1662 ei_local->stat.rx_over_errors++;
1665 * Wait a full Tx time (1.2ms) + some guard time, NS says 1.6ms total.
1666 * Early datasheets said to poll the reset bit, but now they say that
1667 * it "is not a reliable indicator and subsequently should be ignored."
1668 * We wait at least 10ms.
1674 * Reset RBCR[01] back to zero as per magic incantation.
1676 outb_p(0x00, e8390_base+EN0_RCNTLO);
1677 outb_p(0x00, e8390_base+EN0_RCNTHI);
1680 * See if any Tx was interrupted or not. According to NS, this
1681 * step is vital, and skipping it will cause no end of havoc.
1686 unsigned char tx_completed = inb_p(e8390_base+EN0_ISR) & (ENISR_TX+ENISR_TX_ERR);
1692 * Have to enter loopback mode and then restart the NIC before
1693 * you are allowed to slurp packets up off the ring.
1695 outb_p(E8390_TXOFF, e8390_base + EN0_TXCR);
1696 outb_p(E8390_NODMA + E8390_PAGE0 + E8390_START, e8390_base + E8390_CMD);
1699 * Clear the Rx ring of all the debris, and ack the interrupt.
1704 * Leave loopback mode, and resend any packet that got stopped.
1706 outb_p(E8390_TXCONFIG | info->duplex_flag, e8390_base + EN0_TXCR);
1708 outb_p(E8390_NODMA + E8390_PAGE0 + E8390_START + E8390_TRANS, e8390_base + E8390_CMD);
1712 * Collect the stats. This is called unlocked and from several contexts.
1715 static struct net_device_stats *get_stats(struct net_device *dev)
1717 long ioaddr = dev->base_addr;
1718 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1719 unsigned long flags;
1721 /* If the card is stopped, just return the present stats. */
1722 if (!netif_running(dev))
1723 return &ei_local->stat;
1725 spin_lock_irqsave(&ei_local->page_lock,flags);
1726 /* Read the counter registers, assuming we are in page 0. */
1727 ei_local->stat.rx_frame_errors += inb_p(ioaddr + EN0_COUNTER0);
1728 ei_local->stat.rx_crc_errors += inb_p(ioaddr + EN0_COUNTER1);
1729 ei_local->stat.rx_missed_errors+= inb_p(ioaddr + EN0_COUNTER2);
1730 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1732 return &ei_local->stat;
1736 * do_set_multicast_list - set/clear multicast filter
1737 * @dev: net device for which multicast filter is adjusted
1739 * Set or clear the multicast filter for this adaptor. May be called
1740 * from a BH in 2.1.x. Must be called with lock held.
1743 static void do_set_multicast_list(struct net_device *dev)
1745 long e8390_base = dev->base_addr;
1747 if(dev->flags&IFF_PROMISC)
1748 outb_p(E8390_RXCONFIG | 0x58, e8390_base + EN0_RXCR);
1749 else if(dev->flags&IFF_ALLMULTI || dev->mc_list)
1750 outb_p(E8390_RXCONFIG | 0x48, e8390_base + EN0_RXCR);
1752 outb_p(E8390_RXCONFIG | 0x40, e8390_base + EN0_RXCR);
1756 * Called without lock held. This is invoked from user context and may
1757 * be parallel to just about everything else. Its also fairly quick and
1758 * not called too often. Must protect against both bh and irq users
1761 static void set_multicast_list(struct net_device *dev)
1763 unsigned long flags;
1765 spin_lock_irqsave(&dev_lock(dev), flags);
1766 do_set_multicast_list(dev);
1767 spin_unlock_irqrestore(&dev_lock(dev), flags);
1771 * axdev_setup - init rest of 8390 device struct
1772 * @dev: network device structure to init
1774 * Initialize the rest of the 8390 device structure. Do NOT __init
1775 * this, as it is used by 8390 based modular drivers too.
1778 static void axdev_setup(struct net_device *dev)
1780 struct ei_device *ei_local;
1782 printk(version_8390);
1784 SET_MODULE_OWNER(dev);
1787 ei_local = (struct ei_device *)netdev_priv(dev);
1788 spin_lock_init(&ei_local->page_lock);
1790 dev->hard_start_xmit = &ei_start_xmit;
1791 dev->get_stats = get_stats;
1792 dev->set_multicast_list = &set_multicast_list;
1797 /* This page of functions should be 8390 generic */
1798 /* Follow National Semi's recommendations for initializing the "NIC". */
1801 * AX88190_init - initialize 8390 hardware
1802 * @dev: network device to initialize
1803 * @startp: boolean. non-zero value to initiate chip processing
1805 * Must be called with lock held.
1808 static void AX88190_init(struct net_device *dev, int startp)
1810 axnet_dev_t *info = PRIV(dev);
1811 long e8390_base = dev->base_addr;
1812 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1814 int endcfg = ei_local->word16 ? (0x48 | ENDCFG_WTS) : 0x48;
1816 if(sizeof(struct e8390_pkt_hdr)!=4)
1817 panic("8390.c: header struct mispacked\n");
1818 /* Follow National Semi's recommendations for initing the DP83902. */
1819 outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD); /* 0x21 */
1820 outb_p(endcfg, e8390_base + EN0_DCFG); /* 0x48 or 0x49 */
1821 /* Clear the remote byte count registers. */
1822 outb_p(0x00, e8390_base + EN0_RCNTLO);
1823 outb_p(0x00, e8390_base + EN0_RCNTHI);
1824 /* Set to monitor and loopback mode -- this is vital!. */
1825 outb_p(E8390_RXOFF|0x40, e8390_base + EN0_RXCR); /* 0x60 */
1826 outb_p(E8390_TXOFF, e8390_base + EN0_TXCR); /* 0x02 */
1827 /* Set the transmit page and receive ring. */
1828 outb_p(ei_local->tx_start_page, e8390_base + EN0_TPSR);
1829 ei_local->tx1 = ei_local->tx2 = 0;
1830 outb_p(ei_local->rx_start_page, e8390_base + EN0_STARTPG);
1831 outb_p(ei_local->stop_page-1, e8390_base + EN0_BOUNDARY); /* 3c503 says 0x3f,NS0x26*/
1832 ei_local->current_page = ei_local->rx_start_page; /* assert boundary+1 */
1833 outb_p(ei_local->stop_page, e8390_base + EN0_STOPPG);
1834 /* Clear the pending interrupts and mask. */
1835 outb_p(0xFF, e8390_base + EN0_ISR);
1836 outb_p(0x00, e8390_base + EN0_IMR);
1838 /* Copy the station address into the DS8390 registers. */
1840 outb_p(E8390_NODMA + E8390_PAGE1 + E8390_STOP, e8390_base+E8390_CMD); /* 0x61 */
1841 for(i = 0; i < 6; i++)
1843 outb_p(dev->dev_addr[i], e8390_base + EN1_PHYS_SHIFT(i));
1844 if(inb_p(e8390_base + EN1_PHYS_SHIFT(i))!=dev->dev_addr[i])
1845 printk(KERN_ERR "Hw. address read/write mismap %d\n",i);
1848 * Initialize the multicast list to accept-all. If we enable multicast
1849 * the higher levels can do the filtering.
1851 for (i = 0; i < 8; i++)
1852 outb_p(0xff, e8390_base + EN1_MULT + i);
1854 outb_p(ei_local->rx_start_page, e8390_base + EN1_CURPAG);
1855 outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD);
1857 netif_start_queue(dev);
1858 ei_local->tx1 = ei_local->tx2 = 0;
1859 ei_local->txing = 0;
1863 outb_p(0xff, e8390_base + EN0_ISR);
1864 outb_p(ENISR_ALL, e8390_base + EN0_IMR);
1865 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, e8390_base+E8390_CMD);
1866 outb_p(E8390_TXCONFIG | info->duplex_flag,
1867 e8390_base + EN0_TXCR); /* xmit on. */
1868 /* 3c503 TechMan says rxconfig only after the NIC is started. */
1869 outb_p(E8390_RXCONFIG | 0x40, e8390_base + EN0_RXCR); /* rx on, */
1870 do_set_multicast_list(dev); /* (re)load the mcast table */
1874 /* Trigger a transmit start, assuming the length is valid.
1875 Always called with the page lock held */
1877 static void NS8390_trigger_send(struct net_device *dev, unsigned int length,
1880 long e8390_base = dev->base_addr;
1881 struct ei_device *ei_local __attribute((unused)) = (struct ei_device *) netdev_priv(dev);
1883 if (inb_p(e8390_base) & E8390_TRANS)
1885 printk(KERN_WARNING "%s: trigger_send() called with the transmitter busy.\n",
1889 outb_p(length & 0xff, e8390_base + EN0_TCNTLO);
1890 outb_p(length >> 8, e8390_base + EN0_TCNTHI);
1891 outb_p(start_page, e8390_base + EN0_TPSR);
1892 outb_p(E8390_NODMA+E8390_TRANS+E8390_START, e8390_base+E8390_CMD);