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");
76 #define INT_MODULE_PARM(n, v) static int n = v; MODULE_PARM(n, "i")
78 /* Bit map of interrupts to choose from */
79 INT_MODULE_PARM(irq_mask, 0xdeb8);
80 static int irq_list[4] = { -1 };
81 MODULE_PARM(irq_list, "1-4i");
84 INT_MODULE_PARM(pc_debug, PCMCIA_DEBUG);
85 #define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args)
86 static char *version =
87 "axnet_cs.c 1.28 2002/06/29 06:27:37 (David Hinds)";
89 #define DEBUG(n, args...)
92 /*====================================================================*/
94 static void axnet_config(dev_link_t *link);
95 static void axnet_release(dev_link_t *link);
96 static int axnet_event(event_t event, int priority,
97 event_callback_args_t *args);
98 static int axnet_open(struct net_device *dev);
99 static int axnet_close(struct net_device *dev);
100 static int axnet_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
101 static struct ethtool_ops netdev_ethtool_ops;
102 static irqreturn_t ei_irq_wrapper(int irq, void *dev_id, struct pt_regs *regs);
103 static void ei_watchdog(u_long arg);
104 static void axnet_reset_8390(struct net_device *dev);
106 static int mdio_read(ioaddr_t addr, int phy_id, int loc);
107 static void mdio_write(ioaddr_t addr, int phy_id, int loc, int value);
109 static void get_8390_hdr(struct net_device *,
110 struct e8390_pkt_hdr *, int);
111 static void block_input(struct net_device *dev, int count,
112 struct sk_buff *skb, int ring_offset);
113 static void block_output(struct net_device *dev, int count,
114 const u_char *buf, const int start_page);
116 static dev_link_t *axnet_attach(void);
117 static void axnet_detach(dev_link_t *);
119 static dev_info_t dev_info = "axnet_cs";
120 static dev_link_t *dev_list;
122 static void axdev_setup(struct net_device *dev);
123 static void AX88190_init(struct net_device *dev, int startp);
124 static int ax_open(struct net_device *dev);
125 static int ax_close(struct net_device *dev);
126 static irqreturn_t ax_interrupt(int irq, void *dev_id, struct pt_regs *regs);
128 /*====================================================================*/
130 typedef struct axnet_dev_t {
134 struct timer_list watchdog;
135 int stale, fast_poll;
142 static inline axnet_dev_t *PRIV(struct net_device *dev)
144 void *p = (char *)netdev_priv(dev) + sizeof(struct ei_device);
148 /*======================================================================
150 axnet_attach() creates an "instance" of the driver, allocating
151 local data structures for one device. The device is registered
154 ======================================================================*/
156 static dev_link_t *axnet_attach(void)
160 struct net_device *dev;
161 client_reg_t client_reg;
164 DEBUG(0, "axnet_attach()\n");
166 dev = alloc_netdev(sizeof(struct ei_device) + sizeof(axnet_dev_t),
167 "eth%d", axdev_setup);
175 link->irq.Attributes = IRQ_TYPE_EXCLUSIVE;
176 link->irq.IRQInfo1 = IRQ_INFO2_VALID|IRQ_LEVEL_ID;
177 if (irq_list[0] == -1)
178 link->irq.IRQInfo2 = irq_mask;
180 for (i = 0; i < 4; i++)
181 link->irq.IRQInfo2 |= 1 << irq_list[i];
182 link->conf.Attributes = CONF_ENABLE_IRQ;
183 link->conf.IntType = INT_MEMORY_AND_IO;
185 dev->open = &axnet_open;
186 dev->stop = &axnet_close;
187 dev->do_ioctl = &axnet_ioctl;
188 SET_ETHTOOL_OPS(dev, &netdev_ethtool_ops);
190 /* Register with Card Services */
191 link->next = dev_list;
193 client_reg.dev_info = &dev_info;
194 client_reg.Attributes = INFO_IO_CLIENT | INFO_CARD_SHARE;
195 client_reg.EventMask =
196 CS_EVENT_CARD_INSERTION | CS_EVENT_CARD_REMOVAL |
197 CS_EVENT_RESET_PHYSICAL | CS_EVENT_CARD_RESET |
198 CS_EVENT_PM_SUSPEND | CS_EVENT_PM_RESUME;
199 client_reg.event_handler = &axnet_event;
200 client_reg.Version = 0x0210;
201 client_reg.event_callback_args.client_data = link;
202 ret = pcmcia_register_client(&link->handle, &client_reg);
203 if (ret != CS_SUCCESS) {
204 cs_error(link->handle, RegisterClient, ret);
212 /*======================================================================
214 This deletes a driver "instance". The device is de-registered
215 with Card Services. If it has been released, all local data
216 structures are freed. Otherwise, the structures will be freed
217 when the device is released.
219 ======================================================================*/
221 static void axnet_detach(dev_link_t *link)
223 struct net_device *dev = link->priv;
226 DEBUG(0, "axnet_detach(0x%p)\n", link);
228 /* Locate device structure */
229 for (linkp = &dev_list; *linkp; linkp = &(*linkp)->next)
230 if (*linkp == link) break;
234 if (link->state & DEV_CONFIG)
238 pcmcia_deregister_client(link->handle);
240 /* Unlink device structure, free bits */
243 unregister_netdev(dev);
247 /*======================================================================
249 This probes for a card's hardware address by reading the PROM.
251 ======================================================================*/
253 static int get_prom(dev_link_t *link)
255 struct net_device *dev = link->priv;
256 ioaddr_t ioaddr = dev->base_addr;
259 /* This is based on drivers/net/ne.c */
261 u_char value, offset;
263 {E8390_NODMA+E8390_PAGE0+E8390_STOP, E8390_CMD}, /* Select page 0*/
264 {0x01, EN0_DCFG}, /* Set word-wide access. */
265 {0x00, EN0_RCNTLO}, /* Clear the count regs. */
267 {0x00, EN0_IMR}, /* Mask completion irq. */
269 {E8390_RXOFF|0x40, EN0_RXCR}, /* 0x60 Set to monitor */
270 {E8390_TXOFF, EN0_TXCR}, /* 0x02 and loopback mode. */
273 {0x00, EN0_RSARLO}, /* DMA starting at 0x0400. */
275 {E8390_RREAD+E8390_START, E8390_CMD},
278 /* Not much of a test, but the alternatives are messy */
279 if (link->conf.ConfigBase != 0x03c0)
282 axnet_reset_8390(dev);
285 for (i = 0; i < sizeof(program_seq)/sizeof(program_seq[0]); i++)
286 outb_p(program_seq[i].value, ioaddr + program_seq[i].offset);
288 for (i = 0; i < 6; i += 2) {
289 j = inw(ioaddr + AXNET_DATAPORT);
290 dev->dev_addr[i] = j & 0xff;
291 dev->dev_addr[i+1] = j >> 8;
296 /*======================================================================
298 axnet_config() is scheduled to run after a CARD_INSERTION event
299 is received, to configure the PCMCIA socket, and to make the
300 ethernet device available to the system.
302 ======================================================================*/
304 #define CS_CHECK(fn, ret) \
305 do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
307 static int try_io_port(dev_link_t *link)
310 if (link->io.NumPorts1 == 32) {
311 link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;
312 if (link->io.NumPorts2 > 0) {
313 /* for master/slave multifunction cards */
314 link->io.Attributes2 = IO_DATA_PATH_WIDTH_8;
315 link->irq.Attributes =
316 IRQ_TYPE_DYNAMIC_SHARING|IRQ_FIRST_SHARED;
319 /* This should be two 16-port windows */
320 link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
321 link->io.Attributes2 = IO_DATA_PATH_WIDTH_16;
323 if (link->io.BasePort1 == 0) {
324 link->io.IOAddrLines = 16;
325 for (j = 0; j < 0x400; j += 0x20) {
326 link->io.BasePort1 = j ^ 0x300;
327 link->io.BasePort2 = (j ^ 0x300) + 0x10;
328 ret = pcmcia_request_io(link->handle, &link->io);
329 if (ret == CS_SUCCESS) return ret;
333 return pcmcia_request_io(link->handle, &link->io);
337 static void axnet_config(dev_link_t *link)
339 client_handle_t handle = link->handle;
340 struct net_device *dev = link->priv;
341 axnet_dev_t *info = PRIV(dev);
344 int i, j, last_ret, last_fn;
348 DEBUG(0, "axnet_config(0x%p)\n", link);
350 tuple.Attributes = 0;
351 tuple.TupleData = (cisdata_t *)buf;
352 tuple.TupleDataMax = sizeof(buf);
353 tuple.TupleOffset = 0;
354 tuple.DesiredTuple = CISTPL_CONFIG;
355 CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
356 CS_CHECK(GetTupleData, pcmcia_get_tuple_data(handle, &tuple));
357 CS_CHECK(ParseTuple, pcmcia_parse_tuple(handle, &tuple, &parse));
358 link->conf.ConfigBase = parse.config.base;
359 /* don't trust the CIS on this; Linksys got it wrong */
360 link->conf.Present = 0x63;
363 link->state |= DEV_CONFIG;
365 /* Look up current Vcc */
366 CS_CHECK(GetConfigurationInfo, pcmcia_get_configuration_info(handle, &conf));
367 link->conf.Vcc = conf.Vcc;
369 tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
370 tuple.Attributes = 0;
371 CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
372 while (last_ret == CS_SUCCESS) {
373 cistpl_cftable_entry_t *cfg = &(parse.cftable_entry);
374 cistpl_io_t *io = &(parse.cftable_entry.io);
376 if (pcmcia_get_tuple_data(handle, &tuple) != 0 ||
377 pcmcia_parse_tuple(handle, &tuple, &parse) != 0 ||
378 cfg->index == 0 || cfg->io.nwin == 0)
381 link->conf.ConfigIndex = 0x05;
382 /* For multifunction cards, by convention, we configure the
383 network function with window 0, and serial with window 1 */
385 i = (io->win[1].len > io->win[0].len);
386 link->io.BasePort2 = io->win[1-i].base;
387 link->io.NumPorts2 = io->win[1-i].len;
389 i = link->io.NumPorts2 = 0;
391 link->io.BasePort1 = io->win[i].base;
392 link->io.NumPorts1 = io->win[i].len;
393 link->io.IOAddrLines = io->flags & CISTPL_IO_LINES_MASK;
394 if (link->io.NumPorts1 + link->io.NumPorts2 >= 32) {
395 last_ret = try_io_port(link);
396 if (last_ret == CS_SUCCESS) break;
399 last_ret = pcmcia_get_next_tuple(handle, &tuple);
401 if (last_ret != CS_SUCCESS) {
402 cs_error(handle, RequestIO, last_ret);
406 CS_CHECK(RequestIRQ, pcmcia_request_irq(handle, &link->irq));
408 if (link->io.NumPorts2 == 8) {
409 link->conf.Attributes |= CONF_ENABLE_SPKR;
410 link->conf.Status = CCSR_AUDIO_ENA;
413 CS_CHECK(RequestConfiguration, pcmcia_request_configuration(handle, &link->conf));
414 dev->irq = link->irq.AssignedIRQ;
415 dev->base_addr = link->io.BasePort1;
417 if (!get_prom(link)) {
418 printk(KERN_NOTICE "axnet_cs: this is not an AX88190 card!\n");
419 printk(KERN_NOTICE "axnet_cs: use pcnet_cs instead.\n");
423 ei_status.name = "AX88190";
424 ei_status.word16 = 1;
425 ei_status.tx_start_page = AXNET_START_PG;
426 ei_status.rx_start_page = AXNET_START_PG + TX_PAGES;
427 ei_status.stop_page = AXNET_STOP_PG;
428 ei_status.reset_8390 = &axnet_reset_8390;
429 ei_status.get_8390_hdr = &get_8390_hdr;
430 ei_status.block_input = &block_input;
431 ei_status.block_output = &block_output;
433 if (inb(dev->base_addr + AXNET_TEST) != 0)
434 info->flags |= IS_AX88790;
436 info->flags |= IS_AX88190;
438 if (info->flags & IS_AX88790)
439 outb(0x10, dev->base_addr + AXNET_GPIO); /* select Internal PHY */
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;
446 /* Maybe PHY is in power down mode. (PPD_SET = 1)
447 Bit 2 of CCSR is active low. */
449 conf_reg_t reg = { 0, CS_WRITE, CISREG_CCSR, 0x04 };
450 pcmcia_access_configuration_register(link->handle, ®);
451 for (i = 0; i < 32; i++) {
452 j = mdio_read(dev->base_addr + AXNET_MII_EEP, i, 1);
453 if ((j != 0) && (j != 0xffff)) break;
457 info->phy_id = (i < 32) ? i : -1;
458 link->dev = &info->node;
459 link->state &= ~DEV_CONFIG_PENDING;
461 if (register_netdev(dev) != 0) {
462 printk(KERN_NOTICE "axnet_cs: register_netdev() failed\n");
467 strcpy(info->node.dev_name, dev->name);
469 printk(KERN_INFO "%s: Asix AX88%d90: io %#3lx, irq %d, hw_addr ",
470 dev->name, ((info->flags & IS_AX88790) ? 7 : 1),
471 dev->base_addr, dev->irq);
472 for (i = 0; i < 6; i++)
473 printk("%02X%s", dev->dev_addr[i], ((i<5) ? ":" : "\n"));
474 if (info->phy_id != -1) {
475 DEBUG(0, " MII transceiver at index %d, status %x.\n", info->phy_id, j);
477 printk(KERN_NOTICE " No MII transceivers found!\n");
482 cs_error(link->handle, last_fn, last_ret);
485 link->state &= ~DEV_CONFIG_PENDING;
489 /*======================================================================
491 After a card is removed, axnet_release() will unregister the net
492 device, and release the PCMCIA configuration. If the device is
493 still open, this will be postponed until it is closed.
495 ======================================================================*/
497 static void axnet_release(dev_link_t *link)
499 DEBUG(0, "axnet_release(0x%p)\n", link);
501 pcmcia_release_configuration(link->handle);
502 pcmcia_release_io(link->handle, &link->io);
503 pcmcia_release_irq(link->handle, &link->irq);
505 link->state &= ~DEV_CONFIG;
508 /*======================================================================
510 The card status event handler. Mostly, this schedules other
511 stuff to run after an event is received. A CARD_REMOVAL event
512 also sets some flags to discourage the net drivers from trying
513 to talk to the card any more.
515 ======================================================================*/
517 static int axnet_event(event_t event, int priority,
518 event_callback_args_t *args)
520 dev_link_t *link = args->client_data;
521 struct net_device *dev = link->priv;
523 DEBUG(2, "axnet_event(0x%06x)\n", event);
526 case CS_EVENT_CARD_REMOVAL:
527 link->state &= ~DEV_PRESENT;
528 if (link->state & DEV_CONFIG) {
529 netif_device_detach(dev);
533 case CS_EVENT_CARD_INSERTION:
534 link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
537 case CS_EVENT_PM_SUSPEND:
538 link->state |= DEV_SUSPEND;
539 /* Fall through... */
540 case CS_EVENT_RESET_PHYSICAL:
541 if (link->state & DEV_CONFIG) {
543 netif_device_detach(dev);
544 pcmcia_release_configuration(link->handle);
547 case CS_EVENT_PM_RESUME:
548 link->state &= ~DEV_SUSPEND;
549 /* Fall through... */
550 case CS_EVENT_CARD_RESET:
551 if (link->state & DEV_CONFIG) {
552 pcmcia_request_configuration(link->handle, &link->conf);
554 axnet_reset_8390(dev);
555 AX88190_init(dev, 1);
556 netif_device_attach(dev);
564 /*======================================================================
566 MII interface support
568 ======================================================================*/
570 #define MDIO_SHIFT_CLK 0x01
571 #define MDIO_DATA_WRITE0 0x00
572 #define MDIO_DATA_WRITE1 0x08
573 #define MDIO_DATA_READ 0x04
574 #define MDIO_MASK 0x0f
575 #define MDIO_ENB_IN 0x02
577 static void mdio_sync(ioaddr_t addr)
580 for (bits = 0; bits < 32; bits++) {
581 outb_p(MDIO_DATA_WRITE1, addr);
582 outb_p(MDIO_DATA_WRITE1 | MDIO_SHIFT_CLK, addr);
586 static int mdio_read(ioaddr_t addr, int phy_id, int loc)
588 u_int cmd = (0xf6<<10)|(phy_id<<5)|loc;
592 for (i = 14; i >= 0; i--) {
593 int dat = (cmd&(1<<i)) ? MDIO_DATA_WRITE1 : MDIO_DATA_WRITE0;
595 outb_p(dat | MDIO_SHIFT_CLK, addr);
597 for (i = 19; i > 0; i--) {
598 outb_p(MDIO_ENB_IN, addr);
599 retval = (retval << 1) | ((inb_p(addr) & MDIO_DATA_READ) != 0);
600 outb_p(MDIO_ENB_IN | MDIO_SHIFT_CLK, addr);
602 return (retval>>1) & 0xffff;
605 static void mdio_write(ioaddr_t addr, int phy_id, int loc, int value)
607 u_int cmd = (0x05<<28)|(phy_id<<23)|(loc<<18)|(1<<17)|value;
611 for (i = 31; i >= 0; i--) {
612 int dat = (cmd&(1<<i)) ? MDIO_DATA_WRITE1 : MDIO_DATA_WRITE0;
614 outb_p(dat | MDIO_SHIFT_CLK, addr);
616 for (i = 1; i >= 0; i--) {
617 outb_p(MDIO_ENB_IN, addr);
618 outb_p(MDIO_ENB_IN | MDIO_SHIFT_CLK, addr);
622 /*====================================================================*/
624 static int axnet_open(struct net_device *dev)
626 axnet_dev_t *info = PRIV(dev);
627 dev_link_t *link = &info->link;
629 DEBUG(2, "axnet_open('%s')\n", dev->name);
636 request_irq(dev->irq, ei_irq_wrapper, SA_SHIRQ, dev_info, dev);
638 info->link_status = 0x00;
639 init_timer(&info->watchdog);
640 info->watchdog.function = &ei_watchdog;
641 info->watchdog.data = (u_long)dev;
642 info->watchdog.expires = jiffies + HZ;
643 add_timer(&info->watchdog);
648 /*====================================================================*/
650 static int axnet_close(struct net_device *dev)
652 axnet_dev_t *info = PRIV(dev);
653 dev_link_t *link = &info->link;
655 DEBUG(2, "axnet_close('%s')\n", dev->name);
658 free_irq(dev->irq, dev);
661 netif_stop_queue(dev);
662 del_timer_sync(&info->watchdog);
667 /*======================================================================
669 Hard reset the card. This used to pause for the same period that
670 a 8390 reset command required, but that shouldn't be necessary.
672 ======================================================================*/
674 static void axnet_reset_8390(struct net_device *dev)
676 ioaddr_t nic_base = dev->base_addr;
679 ei_status.txing = ei_status.dmaing = 0;
681 outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, nic_base + E8390_CMD);
683 outb(inb(nic_base + AXNET_RESET), nic_base + AXNET_RESET);
685 for (i = 0; i < 100; i++) {
686 if ((inb_p(nic_base+EN0_ISR) & ENISR_RESET) != 0)
690 outb_p(ENISR_RESET, nic_base + EN0_ISR); /* Ack intr. */
693 printk(KERN_ERR "%s: axnet_reset_8390() did not complete.\n",
696 } /* axnet_reset_8390 */
698 /*====================================================================*/
700 static irqreturn_t ei_irq_wrapper(int irq, void *dev_id, struct pt_regs *regs)
702 struct net_device *dev = dev_id;
703 PRIV(dev)->stale = 0;
704 return ax_interrupt(irq, dev_id, regs);
707 static void ei_watchdog(u_long arg)
709 struct net_device *dev = (struct net_device *)(arg);
710 axnet_dev_t *info = PRIV(dev);
711 ioaddr_t nic_base = dev->base_addr;
712 ioaddr_t mii_addr = nic_base + AXNET_MII_EEP;
715 if (!netif_device_present(dev)) goto reschedule;
717 /* Check for pending interrupt with expired latency timer: with
718 this, we can limp along even if the interrupt is blocked */
719 if (info->stale++ && (inb_p(nic_base + EN0_ISR) & ENISR_ALL)) {
720 if (!info->fast_poll)
721 printk(KERN_INFO "%s: interrupt(s) dropped!\n", dev->name);
722 ei_irq_wrapper(dev->irq, dev, NULL);
723 info->fast_poll = HZ;
725 if (info->fast_poll) {
727 info->watchdog.expires = jiffies + 1;
728 add_timer(&info->watchdog);
732 if (info->phy_id < 0)
734 link = mdio_read(mii_addr, info->phy_id, 1);
735 if (!link || (link == 0xffff)) {
736 printk(KERN_INFO "%s: MII is missing!\n", dev->name);
742 if (link != info->link_status) {
743 u_short p = mdio_read(mii_addr, info->phy_id, 5);
744 printk(KERN_INFO "%s: %s link beat\n", dev->name,
745 (link) ? "found" : "lost");
747 info->duplex_flag = (p & 0x0140) ? 0x80 : 0x00;
749 printk(KERN_INFO "%s: autonegotiation complete: "
750 "%sbaseT-%cD selected\n", dev->name,
751 ((p & 0x0180) ? "100" : "10"),
752 ((p & 0x0140) ? 'F' : 'H'));
754 printk(KERN_INFO "%s: link partner did not autonegotiate\n",
756 AX88190_init(dev, 1);
758 info->link_status = link;
762 info->watchdog.expires = jiffies + HZ;
763 add_timer(&info->watchdog);
766 static void netdev_get_drvinfo(struct net_device *dev,
767 struct ethtool_drvinfo *info)
769 strcpy(info->driver, "axnet_cs");
772 static struct ethtool_ops netdev_ethtool_ops = {
773 .get_drvinfo = netdev_get_drvinfo,
776 /*====================================================================*/
778 static int axnet_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
780 axnet_dev_t *info = PRIV(dev);
781 u16 *data = (u16 *)&rq->ifr_data;
782 ioaddr_t mii_addr = dev->base_addr + AXNET_MII_EEP;
785 data[0] = info->phy_id;
786 case SIOCGMIIREG: /* Read MII PHY register. */
787 data[3] = mdio_read(mii_addr, data[0], data[1] & 0x1f);
789 case SIOCSMIIREG: /* Write MII PHY register. */
790 if (!capable(CAP_NET_ADMIN))
792 mdio_write(mii_addr, data[0], data[1] & 0x1f, data[2]);
798 /*====================================================================*/
800 static void get_8390_hdr(struct net_device *dev,
801 struct e8390_pkt_hdr *hdr,
804 ioaddr_t nic_base = dev->base_addr;
806 outb_p(0, nic_base + EN0_RSARLO); /* On page boundary */
807 outb_p(ring_page, nic_base + EN0_RSARHI);
808 outb_p(E8390_RREAD+E8390_START, nic_base + AXNET_CMD);
810 insw(nic_base + AXNET_DATAPORT, hdr,
811 sizeof(struct e8390_pkt_hdr)>>1);
812 /* Fix for big endian systems */
813 hdr->count = le16_to_cpu(hdr->count);
817 /*====================================================================*/
819 static void block_input(struct net_device *dev, int count,
820 struct sk_buff *skb, int ring_offset)
822 ioaddr_t nic_base = dev->base_addr;
823 int xfer_count = count;
824 char *buf = skb->data;
827 if ((ei_debug > 4) && (count != 4))
828 printk(KERN_DEBUG "%s: [bi=%d]\n", dev->name, count+4);
830 outb_p(ring_offset & 0xff, nic_base + EN0_RSARLO);
831 outb_p(ring_offset >> 8, nic_base + EN0_RSARHI);
832 outb_p(E8390_RREAD+E8390_START, nic_base + AXNET_CMD);
834 insw(nic_base + AXNET_DATAPORT,buf,count>>1);
836 buf[count-1] = inb(nic_base + AXNET_DATAPORT), xfer_count++;
840 /*====================================================================*/
842 static void block_output(struct net_device *dev, int count,
843 const u_char *buf, const int start_page)
845 ioaddr_t nic_base = dev->base_addr;
849 printk(KERN_DEBUG "%s: [bo=%d]\n", dev->name, count);
852 /* Round the count up for word writes. Do we need to do this?
853 What effect will an odd byte count have on the 8390?
854 I should check someday. */
858 outb_p(0x00, nic_base + EN0_RSARLO);
859 outb_p(start_page, nic_base + EN0_RSARHI);
860 outb_p(E8390_RWRITE+E8390_START, nic_base + AXNET_CMD);
861 outsw(nic_base + AXNET_DATAPORT, buf, count>>1);
864 static struct pcmcia_driver axnet_cs_driver = {
865 .owner = THIS_MODULE,
869 .attach = axnet_attach,
870 .detach = axnet_detach,
873 static int __init init_axnet_cs(void)
875 return pcmcia_register_driver(&axnet_cs_driver);
878 static void __exit exit_axnet_cs(void)
880 pcmcia_unregister_driver(&axnet_cs_driver);
881 while (dev_list != NULL)
882 axnet_detach(dev_list);
885 module_init(init_axnet_cs);
886 module_exit(exit_axnet_cs);
888 /*====================================================================*/
890 /* 8390.c: A general NS8390 ethernet driver core for linux. */
892 Written 1992-94 by Donald Becker.
894 Copyright 1993 United States Government as represented by the
895 Director, National Security Agency.
897 This software may be used and distributed according to the terms
898 of the GNU General Public License, incorporated herein by reference.
900 The author may be reached as becker@scyld.com, or C/O
901 Scyld Computing Corporation
902 410 Severn Ave., Suite 210
905 This is the chip-specific code for many 8390-based ethernet adaptors.
906 This is not a complete driver, it must be combined with board-specific
907 code such as ne.c, wd.c, 3c503.c, etc.
909 Seeing how at least eight drivers use this code, (not counting the
910 PCMCIA ones either) it is easy to break some card by what seems like
911 a simple innocent change. Please contact me or Donald if you think
912 you have found something that needs changing. -- PG
916 Paul Gortmaker : remove set_bit lock, other cleanups.
917 Paul Gortmaker : add ei_get_8390_hdr() so we can pass skb's to
918 ei_block_input() for eth_io_copy_and_sum().
919 Paul Gortmaker : exchange static int ei_pingpong for a #define,
920 also add better Tx error handling.
921 Paul Gortmaker : rewrite Rx overrun handling as per NS specs.
922 Alexey Kuznetsov : use the 8390's six bit hash multicast filter.
923 Paul Gortmaker : tweak ANK's above multicast changes a bit.
924 Paul Gortmaker : update packet statistics for v2.1.x
925 Alan Cox : support arbitary stupid port mappings on the
926 68K Macintosh. Support >16bit I/O spaces
927 Paul Gortmaker : add kmod support for auto-loading of the 8390
928 module by all drivers that require it.
929 Alan Cox : Spinlocking work, added 'BUG_83C690'
930 Paul Gortmaker : Separate out Tx timeout code from Tx path.
933 The National Semiconductor LAN Databook, and the 3Com 3c503 databook.
937 static const char *version_8390 =
938 "8390.c:v1.10cvs 9/23/94 Donald Becker (becker@scyld.com)\n";
940 #include <asm/uaccess.h>
941 #include <asm/bitops.h>
943 #include <linux/fcntl.h>
944 #include <linux/in.h>
945 #include <linux/interrupt.h>
947 #include <linux/etherdevice.h>
951 /* These are the operational function interfaces to board-specific
953 void reset_8390(struct net_device *dev)
954 Resets the board associated with DEV, including a hardware reset of
955 the 8390. This is only called when there is a transmit timeout, and
956 it is always followed by 8390_init().
957 void block_output(struct net_device *dev, int count, const unsigned char *buf,
959 Write the COUNT bytes of BUF to the packet buffer at START_PAGE. The
960 "page" value uses the 8390's 256-byte pages.
961 void get_8390_hdr(struct net_device *dev, struct e8390_hdr *hdr, int ring_page)
962 Read the 4 byte, page aligned 8390 header. *If* there is a
963 subsequent read, it will be of the rest of the packet.
964 void block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset)
965 Read COUNT bytes from the packet buffer into the skb data area. Start
966 reading from RING_OFFSET, the address as the 8390 sees it. This will always
967 follow the read of the 8390 header.
969 #define ei_reset_8390 (ei_local->reset_8390)
970 #define ei_block_output (ei_local->block_output)
971 #define ei_block_input (ei_local->block_input)
972 #define ei_get_8390_hdr (ei_local->get_8390_hdr)
974 /* use 0 for production, 1 for verification, >2 for debug */
979 /* Index to functions. */
980 static void ei_tx_intr(struct net_device *dev);
981 static void ei_tx_err(struct net_device *dev);
982 static void ei_tx_timeout(struct net_device *dev);
983 static void ei_receive(struct net_device *dev);
984 static void ei_rx_overrun(struct net_device *dev);
986 /* Routines generic to NS8390-based boards. */
987 static void NS8390_trigger_send(struct net_device *dev, unsigned int length,
989 static void set_multicast_list(struct net_device *dev);
990 static void do_set_multicast_list(struct net_device *dev);
993 * SMP and the 8390 setup.
995 * The 8390 isnt exactly designed to be multithreaded on RX/TX. There is
996 * a page register that controls bank and packet buffer access. We guard
997 * this with ei_local->page_lock. Nobody should assume or set the page other
998 * than zero when the lock is not held. Lock holders must restore page 0
999 * before unlocking. Even pure readers must take the lock to protect in
1002 * To make life difficult the chip can also be very slow. We therefore can't
1003 * just use spinlocks. For the longer lockups we disable the irq the device
1004 * sits on and hold the lock. We must hold the lock because there is a dual
1005 * processor case other than interrupts (get stats/set multicast list in
1006 * parallel with each other and transmit).
1008 * Note: in theory we can just disable the irq on the card _but_ there is
1009 * a latency on SMP irq delivery. So we can easily go "disable irq" "sync irqs"
1010 * enter lock, take the queued irq. So we waddle instead of flying.
1012 * Finally by special arrangement for the purpose of being generally
1013 * annoying the transmit function is called bh atomic. That places
1014 * restrictions on the user context callers as disable_irq won't save
1019 * ax_open - Open/initialize the board.
1020 * @dev: network device to initialize
1022 * This routine goes all-out, setting everything
1023 * up anew at each open, even though many of these registers should only
1024 * need to be set once at boot.
1026 static int ax_open(struct net_device *dev)
1028 unsigned long flags;
1029 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1031 #ifdef HAVE_TX_TIMEOUT
1032 /* The card I/O part of the driver (e.g. 3c503) can hook a Tx timeout
1033 wrapper that does e.g. media check & then calls ei_tx_timeout. */
1034 if (dev->tx_timeout == NULL)
1035 dev->tx_timeout = ei_tx_timeout;
1036 if (dev->watchdog_timeo <= 0)
1037 dev->watchdog_timeo = TX_TIMEOUT;
1041 * Grab the page lock so we own the register set, then call
1042 * the init function.
1045 spin_lock_irqsave(&ei_local->page_lock, flags);
1046 AX88190_init(dev, 1);
1047 /* Set the flag before we drop the lock, That way the IRQ arrives
1048 after its set and we get no silly warnings */
1049 netif_start_queue(dev);
1050 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1051 ei_local->irqlock = 0;
1055 #define dev_lock(dev) (((struct ei_device *)netdev_priv(dev))->page_lock)
1058 * ax_close - shut down network device
1059 * @dev: network device to close
1061 * Opposite of ax_open(). Only used when "ifconfig <devname> down" is done.
1063 int ax_close(struct net_device *dev)
1065 unsigned long flags;
1068 * Hold the page lock during close
1071 spin_lock_irqsave(&dev_lock(dev), flags);
1072 AX88190_init(dev, 0);
1073 spin_unlock_irqrestore(&dev_lock(dev), flags);
1074 netif_stop_queue(dev);
1079 * ei_tx_timeout - handle transmit time out condition
1080 * @dev: network device which has apparently fallen asleep
1082 * Called by kernel when device never acknowledges a transmit has
1083 * completed (or failed) - i.e. never posted a Tx related interrupt.
1086 void ei_tx_timeout(struct net_device *dev)
1088 long e8390_base = dev->base_addr;
1089 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1090 int txsr, isr, tickssofar = jiffies - dev->trans_start;
1091 unsigned long flags;
1093 ei_local->stat.tx_errors++;
1095 spin_lock_irqsave(&ei_local->page_lock, flags);
1096 txsr = inb(e8390_base+EN0_TSR);
1097 isr = inb(e8390_base+EN0_ISR);
1098 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1100 printk(KERN_DEBUG "%s: Tx timed out, %s TSR=%#2x, ISR=%#2x, t=%d.\n",
1101 dev->name, (txsr & ENTSR_ABT) ? "excess collisions." :
1102 (isr) ? "lost interrupt?" : "cable problem?", txsr, isr, tickssofar);
1104 if (!isr && !ei_local->stat.tx_packets)
1106 /* The 8390 probably hasn't gotten on the cable yet. */
1107 ei_local->interface_num ^= 1; /* Try a different xcvr. */
1110 /* Ugly but a reset can be slow, yet must be protected */
1112 disable_irq_nosync(dev->irq);
1113 spin_lock(&ei_local->page_lock);
1115 /* Try to restart the card. Perhaps the user has fixed something. */
1117 AX88190_init(dev, 1);
1119 spin_unlock(&ei_local->page_lock);
1120 enable_irq(dev->irq);
1121 netif_wake_queue(dev);
1125 * ei_start_xmit - begin packet transmission
1126 * @skb: packet to be sent
1127 * @dev: network device to which packet is sent
1129 * Sends a packet to an 8390 network device.
1132 static int ei_start_xmit(struct sk_buff *skb, struct net_device *dev)
1134 long e8390_base = dev->base_addr;
1135 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1136 int length, send_length, output_page;
1137 unsigned long flags;
1138 u8 packet[ETH_ZLEN];
1140 netif_stop_queue(dev);
1144 /* Mask interrupts from the ethercard.
1145 SMP: We have to grab the lock here otherwise the IRQ handler
1146 on another CPU can flip window and race the IRQ mask set. We end
1147 up trashing the mcast filter not disabling irqs if we don't lock */
1149 spin_lock_irqsave(&ei_local->page_lock, flags);
1150 outb_p(0x00, e8390_base + EN0_IMR);
1151 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1154 * Slow phase with lock held.
1157 disable_irq_nosync(dev->irq);
1159 spin_lock(&ei_local->page_lock);
1161 ei_local->irqlock = 1;
1163 send_length = ETH_ZLEN < length ? length : ETH_ZLEN;
1166 * We have two Tx slots available for use. Find the first free
1167 * slot, and then perform some sanity checks. With two Tx bufs,
1168 * you get very close to transmitting back-to-back packets. With
1169 * only one Tx buf, the transmitter sits idle while you reload the
1170 * card, leaving a substantial gap between each transmitted packet.
1173 if (ei_local->tx1 == 0)
1175 output_page = ei_local->tx_start_page;
1176 ei_local->tx1 = send_length;
1177 if (ei_debug && ei_local->tx2 > 0)
1178 printk(KERN_DEBUG "%s: idle transmitter tx2=%d, lasttx=%d, txing=%d.\n",
1179 dev->name, ei_local->tx2, ei_local->lasttx, ei_local->txing);
1181 else if (ei_local->tx2 == 0)
1183 output_page = ei_local->tx_start_page + TX_1X_PAGES;
1184 ei_local->tx2 = send_length;
1185 if (ei_debug && ei_local->tx1 > 0)
1186 printk(KERN_DEBUG "%s: idle transmitter, tx1=%d, lasttx=%d, txing=%d.\n",
1187 dev->name, ei_local->tx1, ei_local->lasttx, ei_local->txing);
1190 { /* We should never get here. */
1192 printk(KERN_DEBUG "%s: No Tx buffers free! tx1=%d tx2=%d last=%d\n",
1193 dev->name, ei_local->tx1, ei_local->tx2, ei_local->lasttx);
1194 ei_local->irqlock = 0;
1195 netif_stop_queue(dev);
1196 outb_p(ENISR_ALL, e8390_base + EN0_IMR);
1197 spin_unlock(&ei_local->page_lock);
1198 enable_irq(dev->irq);
1199 ei_local->stat.tx_errors++;
1204 * Okay, now upload the packet and trigger a send if the transmitter
1205 * isn't already sending. If it is busy, the interrupt handler will
1206 * trigger the send later, upon receiving a Tx done interrupt.
1209 if (length == skb->len)
1210 ei_block_output(dev, length, skb->data, output_page);
1212 memset(packet, 0, ETH_ZLEN);
1213 memcpy(packet, skb->data, skb->len);
1214 ei_block_output(dev, length, packet, output_page);
1217 if (! ei_local->txing)
1219 ei_local->txing = 1;
1220 NS8390_trigger_send(dev, send_length, output_page);
1221 dev->trans_start = jiffies;
1222 if (output_page == ei_local->tx_start_page)
1225 ei_local->lasttx = -1;
1230 ei_local->lasttx = -2;
1233 else ei_local->txqueue++;
1235 if (ei_local->tx1 && ei_local->tx2)
1236 netif_stop_queue(dev);
1238 netif_start_queue(dev);
1240 /* Turn 8390 interrupts back on. */
1241 ei_local->irqlock = 0;
1242 outb_p(ENISR_ALL, e8390_base + EN0_IMR);
1244 spin_unlock(&ei_local->page_lock);
1245 enable_irq(dev->irq);
1247 dev_kfree_skb (skb);
1248 ei_local->stat.tx_bytes += send_length;
1254 * ax_interrupt - handle the interrupts from an 8390
1255 * @irq: interrupt number
1256 * @dev_id: a pointer to the net_device
1259 * Handle the ether interface interrupts. We pull packets from
1260 * the 8390 via the card specific functions and fire them at the networking
1261 * stack. We also handle transmit completions and wake the transmit path if
1262 * necessary. We also update the counters and do other housekeeping as
1266 static irqreturn_t ax_interrupt(int irq, void *dev_id, struct pt_regs * regs)
1268 struct net_device *dev = dev_id;
1270 int interrupts, nr_serviced = 0, i;
1271 struct ei_device *ei_local;
1276 printk ("net_interrupt(): irq %d for unknown device.\n", irq);
1280 e8390_base = dev->base_addr;
1281 ei_local = (struct ei_device *) netdev_priv(dev);
1284 * Protect the irq test too.
1287 spin_lock(&ei_local->page_lock);
1289 if (ei_local->irqlock)
1291 #if 1 /* This might just be an interrupt for a PCI device sharing this line */
1292 /* The "irqlock" check is only for testing. */
1293 printk(ei_local->irqlock
1294 ? "%s: Interrupted while interrupts are masked! isr=%#2x imr=%#2x.\n"
1295 : "%s: Reentering the interrupt handler! isr=%#2x imr=%#2x.\n",
1296 dev->name, inb_p(e8390_base + EN0_ISR),
1297 inb_p(e8390_base + EN0_IMR));
1299 spin_unlock(&ei_local->page_lock);
1304 printk(KERN_DEBUG "%s: interrupt(isr=%#2.2x).\n", dev->name,
1305 inb_p(e8390_base + EN0_ISR));
1307 outb_p(0x00, e8390_base + EN0_ISR);
1308 ei_local->irqlock = 1;
1310 /* !!Assumption!! -- we stay in page 0. Don't break this. */
1311 while ((interrupts = inb_p(e8390_base + EN0_ISR)) != 0
1312 && ++nr_serviced < MAX_SERVICE)
1314 if (!netif_running(dev) || (interrupts == 0xff)) {
1316 printk(KERN_WARNING "%s: interrupt from stopped card\n", dev->name);
1317 outb_p(interrupts, e8390_base + EN0_ISR);
1323 /* AX88190 bug fix. */
1324 outb_p(interrupts, e8390_base + EN0_ISR);
1325 for (i = 0; i < 10; i++) {
1326 if (!(inb(e8390_base + EN0_ISR) & interrupts))
1328 outb_p(0, e8390_base + EN0_ISR);
1329 outb_p(interrupts, e8390_base + EN0_ISR);
1331 if (interrupts & ENISR_OVER)
1333 else if (interrupts & (ENISR_RX+ENISR_RX_ERR))
1335 /* Got a good (?) packet. */
1338 /* Push the next to-transmit packet through. */
1339 if (interrupts & ENISR_TX)
1341 else if (interrupts & ENISR_TX_ERR)
1344 if (interrupts & ENISR_COUNTERS)
1346 ei_local->stat.rx_frame_errors += inb_p(e8390_base + EN0_COUNTER0);
1347 ei_local->stat.rx_crc_errors += inb_p(e8390_base + EN0_COUNTER1);
1348 ei_local->stat.rx_missed_errors+= inb_p(e8390_base + EN0_COUNTER2);
1352 if (interrupts && ei_debug)
1355 if (nr_serviced >= MAX_SERVICE)
1357 /* 0xFF is valid for a card removal */
1358 if(interrupts!=0xFF)
1359 printk(KERN_WARNING "%s: Too much work at interrupt, status %#2.2x\n",
1360 dev->name, interrupts);
1361 outb_p(ENISR_ALL, e8390_base + EN0_ISR); /* Ack. most intrs. */
1363 printk(KERN_WARNING "%s: unknown interrupt %#2x\n", dev->name, interrupts);
1364 outb_p(0xff, e8390_base + EN0_ISR); /* Ack. all intrs. */
1368 /* Turn 8390 interrupts back on. */
1369 ei_local->irqlock = 0;
1370 outb_p(ENISR_ALL, e8390_base + EN0_IMR);
1372 spin_unlock(&ei_local->page_lock);
1373 return IRQ_RETVAL(handled);
1377 * ei_tx_err - handle transmitter error
1378 * @dev: network device which threw the exception
1380 * A transmitter error has happened. Most likely excess collisions (which
1381 * is a fairly normal condition). If the error is one where the Tx will
1382 * have been aborted, we try and send another one right away, instead of
1383 * letting the failed packet sit and collect dust in the Tx buffer. This
1384 * is a much better solution as it avoids kernel based Tx timeouts, and
1385 * an unnecessary card reset.
1387 * Called with lock held.
1390 static void ei_tx_err(struct net_device *dev)
1392 long e8390_base = dev->base_addr;
1393 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1394 unsigned char txsr = inb_p(e8390_base+EN0_TSR);
1395 unsigned char tx_was_aborted = txsr & (ENTSR_ABT+ENTSR_FU);
1397 #ifdef VERBOSE_ERROR_DUMP
1398 printk(KERN_DEBUG "%s: transmitter error (%#2x): ", dev->name, txsr);
1399 if (txsr & ENTSR_ABT)
1400 printk("excess-collisions ");
1401 if (txsr & ENTSR_ND)
1402 printk("non-deferral ");
1403 if (txsr & ENTSR_CRS)
1404 printk("lost-carrier ");
1405 if (txsr & ENTSR_FU)
1406 printk("FIFO-underrun ");
1407 if (txsr & ENTSR_CDH)
1408 printk("lost-heartbeat ");
1416 ei_local->stat.tx_errors++;
1417 if (txsr & ENTSR_CRS) ei_local->stat.tx_carrier_errors++;
1418 if (txsr & ENTSR_CDH) ei_local->stat.tx_heartbeat_errors++;
1419 if (txsr & ENTSR_OWC) ei_local->stat.tx_window_errors++;
1424 * ei_tx_intr - transmit interrupt handler
1425 * @dev: network device for which tx intr is handled
1427 * We have finished a transmit: check for errors and then trigger the next
1428 * packet to be sent. Called with lock held.
1431 static void ei_tx_intr(struct net_device *dev)
1433 long e8390_base = dev->base_addr;
1434 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1435 int status = inb(e8390_base + EN0_TSR);
1438 * There are two Tx buffers, see which one finished, and trigger
1439 * the send of another one if it exists.
1441 ei_local->txqueue--;
1443 if (ei_local->tx1 < 0)
1445 if (ei_local->lasttx != 1 && ei_local->lasttx != -1)
1446 printk(KERN_ERR "%s: bogus last_tx_buffer %d, tx1=%d.\n",
1447 ei_local->name, ei_local->lasttx, ei_local->tx1);
1449 if (ei_local->tx2 > 0)
1451 ei_local->txing = 1;
1452 NS8390_trigger_send(dev, ei_local->tx2, ei_local->tx_start_page + 6);
1453 dev->trans_start = jiffies;
1455 ei_local->lasttx = 2;
1457 else ei_local->lasttx = 20, ei_local->txing = 0;
1459 else if (ei_local->tx2 < 0)
1461 if (ei_local->lasttx != 2 && ei_local->lasttx != -2)
1462 printk("%s: bogus last_tx_buffer %d, tx2=%d.\n",
1463 ei_local->name, ei_local->lasttx, ei_local->tx2);
1465 if (ei_local->tx1 > 0)
1467 ei_local->txing = 1;
1468 NS8390_trigger_send(dev, ei_local->tx1, ei_local->tx_start_page);
1469 dev->trans_start = jiffies;
1471 ei_local->lasttx = 1;
1474 ei_local->lasttx = 10, ei_local->txing = 0;
1476 // else printk(KERN_WARNING "%s: unexpected TX-done interrupt, lasttx=%d.\n",
1477 // dev->name, ei_local->lasttx);
1479 /* Minimize Tx latency: update the statistics after we restart TXing. */
1480 if (status & ENTSR_COL)
1481 ei_local->stat.collisions++;
1482 if (status & ENTSR_PTX)
1483 ei_local->stat.tx_packets++;
1486 ei_local->stat.tx_errors++;
1487 if (status & ENTSR_ABT)
1489 ei_local->stat.tx_aborted_errors++;
1490 ei_local->stat.collisions += 16;
1492 if (status & ENTSR_CRS)
1493 ei_local->stat.tx_carrier_errors++;
1494 if (status & ENTSR_FU)
1495 ei_local->stat.tx_fifo_errors++;
1496 if (status & ENTSR_CDH)
1497 ei_local->stat.tx_heartbeat_errors++;
1498 if (status & ENTSR_OWC)
1499 ei_local->stat.tx_window_errors++;
1501 netif_wake_queue(dev);
1505 * ei_receive - receive some packets
1506 * @dev: network device with which receive will be run
1508 * We have a good packet(s), get it/them out of the buffers.
1509 * Called with lock held.
1512 static void ei_receive(struct net_device *dev)
1514 long e8390_base = dev->base_addr;
1515 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1516 unsigned char rxing_page, this_frame, next_frame;
1517 unsigned short current_offset;
1518 int rx_pkt_count = 0;
1519 struct e8390_pkt_hdr rx_frame;
1521 while (++rx_pkt_count < 10)
1523 int pkt_len, pkt_stat;
1525 /* Get the rx page (incoming packet pointer). */
1526 rxing_page = inb_p(e8390_base + EN1_CURPAG -1);
1528 /* Remove one frame from the ring. Boundary is always a page behind. */
1529 this_frame = inb_p(e8390_base + EN0_BOUNDARY) + 1;
1530 if (this_frame >= ei_local->stop_page)
1531 this_frame = ei_local->rx_start_page;
1533 /* Someday we'll omit the previous, iff we never get this message.
1534 (There is at least one clone claimed to have a problem.)
1536 Keep quiet if it looks like a card removal. One problem here
1537 is that some clones crash in roughly the same way.
1539 if (ei_debug > 0 && this_frame != ei_local->current_page && (this_frame!=0x0 || rxing_page!=0xFF))
1540 printk(KERN_ERR "%s: mismatched read page pointers %2x vs %2x.\n",
1541 dev->name, this_frame, ei_local->current_page);
1543 if (this_frame == rxing_page) /* Read all the frames? */
1544 break; /* Done for now */
1546 current_offset = this_frame << 8;
1547 ei_get_8390_hdr(dev, &rx_frame, this_frame);
1549 pkt_len = rx_frame.count - sizeof(struct e8390_pkt_hdr);
1550 pkt_stat = rx_frame.status;
1552 next_frame = this_frame + 1 + ((pkt_len+4)>>8);
1554 if (pkt_len < 60 || pkt_len > 1518)
1557 printk(KERN_DEBUG "%s: bogus packet size: %d, status=%#2x nxpg=%#2x.\n",
1558 dev->name, rx_frame.count, rx_frame.status,
1560 ei_local->stat.rx_errors++;
1561 ei_local->stat.rx_length_errors++;
1563 else if ((pkt_stat & 0x0F) == ENRSR_RXOK)
1565 struct sk_buff *skb;
1567 skb = dev_alloc_skb(pkt_len+2);
1571 printk(KERN_DEBUG "%s: Couldn't allocate a sk_buff of size %d.\n",
1572 dev->name, pkt_len);
1573 ei_local->stat.rx_dropped++;
1578 skb_reserve(skb,2); /* IP headers on 16 byte boundaries */
1580 skb_put(skb, pkt_len); /* Make room */
1581 ei_block_input(dev, pkt_len, skb, current_offset + sizeof(rx_frame));
1582 skb->protocol=eth_type_trans(skb,dev);
1584 dev->last_rx = jiffies;
1585 ei_local->stat.rx_packets++;
1586 ei_local->stat.rx_bytes += pkt_len;
1587 if (pkt_stat & ENRSR_PHY)
1588 ei_local->stat.multicast++;
1594 printk(KERN_DEBUG "%s: bogus packet: status=%#2x nxpg=%#2x size=%d\n",
1595 dev->name, rx_frame.status, rx_frame.next,
1597 ei_local->stat.rx_errors++;
1598 /* NB: The NIC counts CRC, frame and missed errors. */
1599 if (pkt_stat & ENRSR_FO)
1600 ei_local->stat.rx_fifo_errors++;
1602 next_frame = rx_frame.next;
1604 /* This _should_ never happen: it's here for avoiding bad clones. */
1605 if (next_frame >= ei_local->stop_page) {
1606 printk("%s: next frame inconsistency, %#2x\n", dev->name,
1608 next_frame = ei_local->rx_start_page;
1610 ei_local->current_page = next_frame;
1611 outb_p(next_frame-1, e8390_base+EN0_BOUNDARY);
1618 * ei_rx_overrun - handle receiver overrun
1619 * @dev: network device which threw exception
1621 * We have a receiver overrun: we have to kick the 8390 to get it started
1622 * again. Problem is that you have to kick it exactly as NS prescribes in
1623 * the updated datasheets, or "the NIC may act in an unpredictable manner."
1624 * This includes causing "the NIC to defer indefinitely when it is stopped
1625 * on a busy network." Ugh.
1626 * Called with lock held. Don't call this with the interrupts off or your
1627 * computer will hate you - it takes 10ms or so.
1630 static void ei_rx_overrun(struct net_device *dev)
1632 axnet_dev_t *info = (axnet_dev_t *)dev;
1633 long e8390_base = dev->base_addr;
1634 unsigned char was_txing, must_resend = 0;
1635 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1638 * Record whether a Tx was in progress and then issue the
1641 was_txing = inb_p(e8390_base+E8390_CMD) & E8390_TRANS;
1642 outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD);
1645 printk(KERN_DEBUG "%s: Receiver overrun.\n", dev->name);
1646 ei_local->stat.rx_over_errors++;
1649 * Wait a full Tx time (1.2ms) + some guard time, NS says 1.6ms total.
1650 * Early datasheets said to poll the reset bit, but now they say that
1651 * it "is not a reliable indicator and subsequently should be ignored."
1652 * We wait at least 10ms.
1658 * Reset RBCR[01] back to zero as per magic incantation.
1660 outb_p(0x00, e8390_base+EN0_RCNTLO);
1661 outb_p(0x00, e8390_base+EN0_RCNTHI);
1664 * See if any Tx was interrupted or not. According to NS, this
1665 * step is vital, and skipping it will cause no end of havoc.
1670 unsigned char tx_completed = inb_p(e8390_base+EN0_ISR) & (ENISR_TX+ENISR_TX_ERR);
1676 * Have to enter loopback mode and then restart the NIC before
1677 * you are allowed to slurp packets up off the ring.
1679 outb_p(E8390_TXOFF, e8390_base + EN0_TXCR);
1680 outb_p(E8390_NODMA + E8390_PAGE0 + E8390_START, e8390_base + E8390_CMD);
1683 * Clear the Rx ring of all the debris, and ack the interrupt.
1688 * Leave loopback mode, and resend any packet that got stopped.
1690 outb_p(E8390_TXCONFIG | info->duplex_flag, e8390_base + EN0_TXCR);
1692 outb_p(E8390_NODMA + E8390_PAGE0 + E8390_START + E8390_TRANS, e8390_base + E8390_CMD);
1696 * Collect the stats. This is called unlocked and from several contexts.
1699 static struct net_device_stats *get_stats(struct net_device *dev)
1701 long ioaddr = dev->base_addr;
1702 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1703 unsigned long flags;
1705 /* If the card is stopped, just return the present stats. */
1706 if (!netif_running(dev))
1707 return &ei_local->stat;
1709 spin_lock_irqsave(&ei_local->page_lock,flags);
1710 /* Read the counter registers, assuming we are in page 0. */
1711 ei_local->stat.rx_frame_errors += inb_p(ioaddr + EN0_COUNTER0);
1712 ei_local->stat.rx_crc_errors += inb_p(ioaddr + EN0_COUNTER1);
1713 ei_local->stat.rx_missed_errors+= inb_p(ioaddr + EN0_COUNTER2);
1714 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1716 return &ei_local->stat;
1720 * do_set_multicast_list - set/clear multicast filter
1721 * @dev: net device for which multicast filter is adjusted
1723 * Set or clear the multicast filter for this adaptor. May be called
1724 * from a BH in 2.1.x. Must be called with lock held.
1727 static void do_set_multicast_list(struct net_device *dev)
1729 long e8390_base = dev->base_addr;
1731 if(dev->flags&IFF_PROMISC)
1732 outb_p(E8390_RXCONFIG | 0x58, e8390_base + EN0_RXCR);
1733 else if(dev->flags&IFF_ALLMULTI || dev->mc_list)
1734 outb_p(E8390_RXCONFIG | 0x48, e8390_base + EN0_RXCR);
1736 outb_p(E8390_RXCONFIG | 0x40, e8390_base + EN0_RXCR);
1740 * Called without lock held. This is invoked from user context and may
1741 * be parallel to just about everything else. Its also fairly quick and
1742 * not called too often. Must protect against both bh and irq users
1745 static void set_multicast_list(struct net_device *dev)
1747 unsigned long flags;
1749 spin_lock_irqsave(&dev_lock(dev), flags);
1750 do_set_multicast_list(dev);
1751 spin_unlock_irqrestore(&dev_lock(dev), flags);
1755 * axdev_setup - init rest of 8390 device struct
1756 * @dev: network device structure to init
1758 * Initialize the rest of the 8390 device structure. Do NOT __init
1759 * this, as it is used by 8390 based modular drivers too.
1762 static void axdev_setup(struct net_device *dev)
1764 struct ei_device *ei_local;
1766 printk(version_8390);
1768 SET_MODULE_OWNER(dev);
1771 ei_local = (struct ei_device *)netdev_priv(dev);
1772 spin_lock_init(&ei_local->page_lock);
1774 dev->hard_start_xmit = &ei_start_xmit;
1775 dev->get_stats = get_stats;
1776 dev->set_multicast_list = &set_multicast_list;
1781 /* This page of functions should be 8390 generic */
1782 /* Follow National Semi's recommendations for initializing the "NIC". */
1785 * AX88190_init - initialize 8390 hardware
1786 * @dev: network device to initialize
1787 * @startp: boolean. non-zero value to initiate chip processing
1789 * Must be called with lock held.
1792 static void AX88190_init(struct net_device *dev, int startp)
1794 axnet_dev_t *info = PRIV(dev);
1795 long e8390_base = dev->base_addr;
1796 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1798 int endcfg = ei_local->word16 ? (0x48 | ENDCFG_WTS) : 0x48;
1800 if(sizeof(struct e8390_pkt_hdr)!=4)
1801 panic("8390.c: header struct mispacked\n");
1802 /* Follow National Semi's recommendations for initing the DP83902. */
1803 outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD); /* 0x21 */
1804 outb_p(endcfg, e8390_base + EN0_DCFG); /* 0x48 or 0x49 */
1805 /* Clear the remote byte count registers. */
1806 outb_p(0x00, e8390_base + EN0_RCNTLO);
1807 outb_p(0x00, e8390_base + EN0_RCNTHI);
1808 /* Set to monitor and loopback mode -- this is vital!. */
1809 outb_p(E8390_RXOFF|0x40, e8390_base + EN0_RXCR); /* 0x60 */
1810 outb_p(E8390_TXOFF, e8390_base + EN0_TXCR); /* 0x02 */
1811 /* Set the transmit page and receive ring. */
1812 outb_p(ei_local->tx_start_page, e8390_base + EN0_TPSR);
1813 ei_local->tx1 = ei_local->tx2 = 0;
1814 outb_p(ei_local->rx_start_page, e8390_base + EN0_STARTPG);
1815 outb_p(ei_local->stop_page-1, e8390_base + EN0_BOUNDARY); /* 3c503 says 0x3f,NS0x26*/
1816 ei_local->current_page = ei_local->rx_start_page; /* assert boundary+1 */
1817 outb_p(ei_local->stop_page, e8390_base + EN0_STOPPG);
1818 /* Clear the pending interrupts and mask. */
1819 outb_p(0xFF, e8390_base + EN0_ISR);
1820 outb_p(0x00, e8390_base + EN0_IMR);
1822 /* Copy the station address into the DS8390 registers. */
1824 outb_p(E8390_NODMA + E8390_PAGE1 + E8390_STOP, e8390_base+E8390_CMD); /* 0x61 */
1825 for(i = 0; i < 6; i++)
1827 outb_p(dev->dev_addr[i], e8390_base + EN1_PHYS_SHIFT(i));
1828 if(inb_p(e8390_base + EN1_PHYS_SHIFT(i))!=dev->dev_addr[i])
1829 printk(KERN_ERR "Hw. address read/write mismap %d\n",i);
1832 * Initialize the multicast list to accept-all. If we enable multicast
1833 * the higher levels can do the filtering.
1835 for (i = 0; i < 8; i++)
1836 outb_p(0xff, e8390_base + EN1_MULT + i);
1838 outb_p(ei_local->rx_start_page, e8390_base + EN1_CURPAG);
1839 outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD);
1841 netif_start_queue(dev);
1842 ei_local->tx1 = ei_local->tx2 = 0;
1843 ei_local->txing = 0;
1847 outb_p(0xff, e8390_base + EN0_ISR);
1848 outb_p(ENISR_ALL, e8390_base + EN0_IMR);
1849 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, e8390_base+E8390_CMD);
1850 outb_p(E8390_TXCONFIG | info->duplex_flag,
1851 e8390_base + EN0_TXCR); /* xmit on. */
1852 /* 3c503 TechMan says rxconfig only after the NIC is started. */
1853 outb_p(E8390_RXCONFIG | 0x40, e8390_base + EN0_RXCR); /* rx on, */
1854 do_set_multicast_list(dev); /* (re)load the mcast table */
1858 /* Trigger a transmit start, assuming the length is valid.
1859 Always called with the page lock held */
1861 static void NS8390_trigger_send(struct net_device *dev, unsigned int length,
1864 long e8390_base = dev->base_addr;
1865 struct ei_device *ei_local __attribute((unused)) = (struct ei_device *) netdev_priv(dev);
1867 if (inb_p(e8390_base) & E8390_TRANS)
1869 printk(KERN_WARNING "%s: trigger_send() called with the transmitter busy.\n",
1873 outb_p(length & 0xff, e8390_base + EN0_TCNTLO);
1874 outb_p(length >> 8, e8390_base + EN0_TCNTHI);
1875 outb_p(start_page, e8390_base + EN0_TPSR);
1876 outb_p(E8390_NODMA+E8390_TRANS+E8390_START, e8390_base+E8390_CMD);