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_ifru;
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/bitops.h>
942 #include <linux/fcntl.h>
943 #include <linux/in.h>
944 #include <linux/interrupt.h>
946 #include <linux/etherdevice.h>
950 /* These are the operational function interfaces to board-specific
952 void reset_8390(struct net_device *dev)
953 Resets the board associated with DEV, including a hardware reset of
954 the 8390. This is only called when there is a transmit timeout, and
955 it is always followed by 8390_init().
956 void block_output(struct net_device *dev, int count, const unsigned char *buf,
958 Write the COUNT bytes of BUF to the packet buffer at START_PAGE. The
959 "page" value uses the 8390's 256-byte pages.
960 void get_8390_hdr(struct net_device *dev, struct e8390_hdr *hdr, int ring_page)
961 Read the 4 byte, page aligned 8390 header. *If* there is a
962 subsequent read, it will be of the rest of the packet.
963 void block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset)
964 Read COUNT bytes from the packet buffer into the skb data area. Start
965 reading from RING_OFFSET, the address as the 8390 sees it. This will always
966 follow the read of the 8390 header.
968 #define ei_reset_8390 (ei_local->reset_8390)
969 #define ei_block_output (ei_local->block_output)
970 #define ei_block_input (ei_local->block_input)
971 #define ei_get_8390_hdr (ei_local->get_8390_hdr)
973 /* use 0 for production, 1 for verification, >2 for debug */
978 /* Index to functions. */
979 static void ei_tx_intr(struct net_device *dev);
980 static void ei_tx_err(struct net_device *dev);
981 static void ei_tx_timeout(struct net_device *dev);
982 static void ei_receive(struct net_device *dev);
983 static void ei_rx_overrun(struct net_device *dev);
985 /* Routines generic to NS8390-based boards. */
986 static void NS8390_trigger_send(struct net_device *dev, unsigned int length,
988 static void set_multicast_list(struct net_device *dev);
989 static void do_set_multicast_list(struct net_device *dev);
992 * SMP and the 8390 setup.
994 * The 8390 isnt exactly designed to be multithreaded on RX/TX. There is
995 * a page register that controls bank and packet buffer access. We guard
996 * this with ei_local->page_lock. Nobody should assume or set the page other
997 * than zero when the lock is not held. Lock holders must restore page 0
998 * before unlocking. Even pure readers must take the lock to protect in
1001 * To make life difficult the chip can also be very slow. We therefore can't
1002 * just use spinlocks. For the longer lockups we disable the irq the device
1003 * sits on and hold the lock. We must hold the lock because there is a dual
1004 * processor case other than interrupts (get stats/set multicast list in
1005 * parallel with each other and transmit).
1007 * Note: in theory we can just disable the irq on the card _but_ there is
1008 * a latency on SMP irq delivery. So we can easily go "disable irq" "sync irqs"
1009 * enter lock, take the queued irq. So we waddle instead of flying.
1011 * Finally by special arrangement for the purpose of being generally
1012 * annoying the transmit function is called bh atomic. That places
1013 * restrictions on the user context callers as disable_irq won't save
1018 * ax_open - Open/initialize the board.
1019 * @dev: network device to initialize
1021 * This routine goes all-out, setting everything
1022 * up anew at each open, even though many of these registers should only
1023 * need to be set once at boot.
1025 static int ax_open(struct net_device *dev)
1027 unsigned long flags;
1028 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1030 #ifdef HAVE_TX_TIMEOUT
1031 /* The card I/O part of the driver (e.g. 3c503) can hook a Tx timeout
1032 wrapper that does e.g. media check & then calls ei_tx_timeout. */
1033 if (dev->tx_timeout == NULL)
1034 dev->tx_timeout = ei_tx_timeout;
1035 if (dev->watchdog_timeo <= 0)
1036 dev->watchdog_timeo = TX_TIMEOUT;
1040 * Grab the page lock so we own the register set, then call
1041 * the init function.
1044 spin_lock_irqsave(&ei_local->page_lock, flags);
1045 AX88190_init(dev, 1);
1046 /* Set the flag before we drop the lock, That way the IRQ arrives
1047 after its set and we get no silly warnings */
1048 netif_start_queue(dev);
1049 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1050 ei_local->irqlock = 0;
1054 #define dev_lock(dev) (((struct ei_device *)netdev_priv(dev))->page_lock)
1057 * ax_close - shut down network device
1058 * @dev: network device to close
1060 * Opposite of ax_open(). Only used when "ifconfig <devname> down" is done.
1062 int ax_close(struct net_device *dev)
1064 unsigned long flags;
1067 * Hold the page lock during close
1070 spin_lock_irqsave(&dev_lock(dev), flags);
1071 AX88190_init(dev, 0);
1072 spin_unlock_irqrestore(&dev_lock(dev), flags);
1073 netif_stop_queue(dev);
1078 * ei_tx_timeout - handle transmit time out condition
1079 * @dev: network device which has apparently fallen asleep
1081 * Called by kernel when device never acknowledges a transmit has
1082 * completed (or failed) - i.e. never posted a Tx related interrupt.
1085 void ei_tx_timeout(struct net_device *dev)
1087 long e8390_base = dev->base_addr;
1088 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1089 int txsr, isr, tickssofar = jiffies - dev->trans_start;
1090 unsigned long flags;
1092 ei_local->stat.tx_errors++;
1094 spin_lock_irqsave(&ei_local->page_lock, flags);
1095 txsr = inb(e8390_base+EN0_TSR);
1096 isr = inb(e8390_base+EN0_ISR);
1097 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1099 printk(KERN_DEBUG "%s: Tx timed out, %s TSR=%#2x, ISR=%#2x, t=%d.\n",
1100 dev->name, (txsr & ENTSR_ABT) ? "excess collisions." :
1101 (isr) ? "lost interrupt?" : "cable problem?", txsr, isr, tickssofar);
1103 if (!isr && !ei_local->stat.tx_packets)
1105 /* The 8390 probably hasn't gotten on the cable yet. */
1106 ei_local->interface_num ^= 1; /* Try a different xcvr. */
1109 /* Ugly but a reset can be slow, yet must be protected */
1111 disable_irq_nosync(dev->irq);
1112 spin_lock(&ei_local->page_lock);
1114 /* Try to restart the card. Perhaps the user has fixed something. */
1116 AX88190_init(dev, 1);
1118 spin_unlock(&ei_local->page_lock);
1119 enable_irq(dev->irq);
1120 netif_wake_queue(dev);
1124 * ei_start_xmit - begin packet transmission
1125 * @skb: packet to be sent
1126 * @dev: network device to which packet is sent
1128 * Sends a packet to an 8390 network device.
1131 static int ei_start_xmit(struct sk_buff *skb, struct net_device *dev)
1133 long e8390_base = dev->base_addr;
1134 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1135 int length, send_length, output_page;
1136 unsigned long flags;
1137 u8 packet[ETH_ZLEN];
1139 netif_stop_queue(dev);
1143 /* Mask interrupts from the ethercard.
1144 SMP: We have to grab the lock here otherwise the IRQ handler
1145 on another CPU can flip window and race the IRQ mask set. We end
1146 up trashing the mcast filter not disabling irqs if we don't lock */
1148 spin_lock_irqsave(&ei_local->page_lock, flags);
1149 outb_p(0x00, e8390_base + EN0_IMR);
1150 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1153 * Slow phase with lock held.
1156 disable_irq_nosync(dev->irq);
1158 spin_lock(&ei_local->page_lock);
1160 ei_local->irqlock = 1;
1162 send_length = ETH_ZLEN < length ? length : ETH_ZLEN;
1165 * We have two Tx slots available for use. Find the first free
1166 * slot, and then perform some sanity checks. With two Tx bufs,
1167 * you get very close to transmitting back-to-back packets. With
1168 * only one Tx buf, the transmitter sits idle while you reload the
1169 * card, leaving a substantial gap between each transmitted packet.
1172 if (ei_local->tx1 == 0)
1174 output_page = ei_local->tx_start_page;
1175 ei_local->tx1 = send_length;
1176 if (ei_debug && ei_local->tx2 > 0)
1177 printk(KERN_DEBUG "%s: idle transmitter tx2=%d, lasttx=%d, txing=%d.\n",
1178 dev->name, ei_local->tx2, ei_local->lasttx, ei_local->txing);
1180 else if (ei_local->tx2 == 0)
1182 output_page = ei_local->tx_start_page + TX_1X_PAGES;
1183 ei_local->tx2 = send_length;
1184 if (ei_debug && ei_local->tx1 > 0)
1185 printk(KERN_DEBUG "%s: idle transmitter, tx1=%d, lasttx=%d, txing=%d.\n",
1186 dev->name, ei_local->tx1, ei_local->lasttx, ei_local->txing);
1189 { /* We should never get here. */
1191 printk(KERN_DEBUG "%s: No Tx buffers free! tx1=%d tx2=%d last=%d\n",
1192 dev->name, ei_local->tx1, ei_local->tx2, ei_local->lasttx);
1193 ei_local->irqlock = 0;
1194 netif_stop_queue(dev);
1195 outb_p(ENISR_ALL, e8390_base + EN0_IMR);
1196 spin_unlock(&ei_local->page_lock);
1197 enable_irq(dev->irq);
1198 ei_local->stat.tx_errors++;
1203 * Okay, now upload the packet and trigger a send if the transmitter
1204 * isn't already sending. If it is busy, the interrupt handler will
1205 * trigger the send later, upon receiving a Tx done interrupt.
1208 if (length == skb->len)
1209 ei_block_output(dev, length, skb->data, output_page);
1211 memset(packet, 0, ETH_ZLEN);
1212 memcpy(packet, skb->data, skb->len);
1213 ei_block_output(dev, length, packet, output_page);
1216 if (! ei_local->txing)
1218 ei_local->txing = 1;
1219 NS8390_trigger_send(dev, send_length, output_page);
1220 dev->trans_start = jiffies;
1221 if (output_page == ei_local->tx_start_page)
1224 ei_local->lasttx = -1;
1229 ei_local->lasttx = -2;
1232 else ei_local->txqueue++;
1234 if (ei_local->tx1 && ei_local->tx2)
1235 netif_stop_queue(dev);
1237 netif_start_queue(dev);
1239 /* Turn 8390 interrupts back on. */
1240 ei_local->irqlock = 0;
1241 outb_p(ENISR_ALL, e8390_base + EN0_IMR);
1243 spin_unlock(&ei_local->page_lock);
1244 enable_irq(dev->irq);
1246 dev_kfree_skb (skb);
1247 ei_local->stat.tx_bytes += send_length;
1253 * ax_interrupt - handle the interrupts from an 8390
1254 * @irq: interrupt number
1255 * @dev_id: a pointer to the net_device
1258 * Handle the ether interface interrupts. We pull packets from
1259 * the 8390 via the card specific functions and fire them at the networking
1260 * stack. We also handle transmit completions and wake the transmit path if
1261 * necessary. We also update the counters and do other housekeeping as
1265 static irqreturn_t ax_interrupt(int irq, void *dev_id, struct pt_regs * regs)
1267 struct net_device *dev = dev_id;
1269 int interrupts, nr_serviced = 0, i;
1270 struct ei_device *ei_local;
1275 printk ("net_interrupt(): irq %d for unknown device.\n", irq);
1279 e8390_base = dev->base_addr;
1280 ei_local = (struct ei_device *) netdev_priv(dev);
1283 * Protect the irq test too.
1286 spin_lock(&ei_local->page_lock);
1288 if (ei_local->irqlock)
1290 #if 1 /* This might just be an interrupt for a PCI device sharing this line */
1291 /* The "irqlock" check is only for testing. */
1292 printk(ei_local->irqlock
1293 ? "%s: Interrupted while interrupts are masked! isr=%#2x imr=%#2x.\n"
1294 : "%s: Reentering the interrupt handler! isr=%#2x imr=%#2x.\n",
1295 dev->name, inb_p(e8390_base + EN0_ISR),
1296 inb_p(e8390_base + EN0_IMR));
1298 spin_unlock(&ei_local->page_lock);
1303 printk(KERN_DEBUG "%s: interrupt(isr=%#2.2x).\n", dev->name,
1304 inb_p(e8390_base + EN0_ISR));
1306 outb_p(0x00, e8390_base + EN0_ISR);
1307 ei_local->irqlock = 1;
1309 /* !!Assumption!! -- we stay in page 0. Don't break this. */
1310 while ((interrupts = inb_p(e8390_base + EN0_ISR)) != 0
1311 && ++nr_serviced < MAX_SERVICE)
1313 if (!netif_running(dev) || (interrupts == 0xff)) {
1315 printk(KERN_WARNING "%s: interrupt from stopped card\n", dev->name);
1316 outb_p(interrupts, e8390_base + EN0_ISR);
1322 /* AX88190 bug fix. */
1323 outb_p(interrupts, e8390_base + EN0_ISR);
1324 for (i = 0; i < 10; i++) {
1325 if (!(inb(e8390_base + EN0_ISR) & interrupts))
1327 outb_p(0, e8390_base + EN0_ISR);
1328 outb_p(interrupts, e8390_base + EN0_ISR);
1330 if (interrupts & ENISR_OVER)
1332 else if (interrupts & (ENISR_RX+ENISR_RX_ERR))
1334 /* Got a good (?) packet. */
1337 /* Push the next to-transmit packet through. */
1338 if (interrupts & ENISR_TX)
1340 else if (interrupts & ENISR_TX_ERR)
1343 if (interrupts & ENISR_COUNTERS)
1345 ei_local->stat.rx_frame_errors += inb_p(e8390_base + EN0_COUNTER0);
1346 ei_local->stat.rx_crc_errors += inb_p(e8390_base + EN0_COUNTER1);
1347 ei_local->stat.rx_missed_errors+= inb_p(e8390_base + EN0_COUNTER2);
1351 if (interrupts && ei_debug)
1354 if (nr_serviced >= MAX_SERVICE)
1356 /* 0xFF is valid for a card removal */
1357 if(interrupts!=0xFF)
1358 printk(KERN_WARNING "%s: Too much work at interrupt, status %#2.2x\n",
1359 dev->name, interrupts);
1360 outb_p(ENISR_ALL, e8390_base + EN0_ISR); /* Ack. most intrs. */
1362 printk(KERN_WARNING "%s: unknown interrupt %#2x\n", dev->name, interrupts);
1363 outb_p(0xff, e8390_base + EN0_ISR); /* Ack. all intrs. */
1367 /* Turn 8390 interrupts back on. */
1368 ei_local->irqlock = 0;
1369 outb_p(ENISR_ALL, e8390_base + EN0_IMR);
1371 spin_unlock(&ei_local->page_lock);
1372 return IRQ_RETVAL(handled);
1376 * ei_tx_err - handle transmitter error
1377 * @dev: network device which threw the exception
1379 * A transmitter error has happened. Most likely excess collisions (which
1380 * is a fairly normal condition). If the error is one where the Tx will
1381 * have been aborted, we try and send another one right away, instead of
1382 * letting the failed packet sit and collect dust in the Tx buffer. This
1383 * is a much better solution as it avoids kernel based Tx timeouts, and
1384 * an unnecessary card reset.
1386 * Called with lock held.
1389 static void ei_tx_err(struct net_device *dev)
1391 long e8390_base = dev->base_addr;
1392 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1393 unsigned char txsr = inb_p(e8390_base+EN0_TSR);
1394 unsigned char tx_was_aborted = txsr & (ENTSR_ABT+ENTSR_FU);
1396 #ifdef VERBOSE_ERROR_DUMP
1397 printk(KERN_DEBUG "%s: transmitter error (%#2x): ", dev->name, txsr);
1398 if (txsr & ENTSR_ABT)
1399 printk("excess-collisions ");
1400 if (txsr & ENTSR_ND)
1401 printk("non-deferral ");
1402 if (txsr & ENTSR_CRS)
1403 printk("lost-carrier ");
1404 if (txsr & ENTSR_FU)
1405 printk("FIFO-underrun ");
1406 if (txsr & ENTSR_CDH)
1407 printk("lost-heartbeat ");
1415 ei_local->stat.tx_errors++;
1416 if (txsr & ENTSR_CRS) ei_local->stat.tx_carrier_errors++;
1417 if (txsr & ENTSR_CDH) ei_local->stat.tx_heartbeat_errors++;
1418 if (txsr & ENTSR_OWC) ei_local->stat.tx_window_errors++;
1423 * ei_tx_intr - transmit interrupt handler
1424 * @dev: network device for which tx intr is handled
1426 * We have finished a transmit: check for errors and then trigger the next
1427 * packet to be sent. Called with lock held.
1430 static void ei_tx_intr(struct net_device *dev)
1432 long e8390_base = dev->base_addr;
1433 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1434 int status = inb(e8390_base + EN0_TSR);
1437 * There are two Tx buffers, see which one finished, and trigger
1438 * the send of another one if it exists.
1440 ei_local->txqueue--;
1442 if (ei_local->tx1 < 0)
1444 if (ei_local->lasttx != 1 && ei_local->lasttx != -1)
1445 printk(KERN_ERR "%s: bogus last_tx_buffer %d, tx1=%d.\n",
1446 ei_local->name, ei_local->lasttx, ei_local->tx1);
1448 if (ei_local->tx2 > 0)
1450 ei_local->txing = 1;
1451 NS8390_trigger_send(dev, ei_local->tx2, ei_local->tx_start_page + 6);
1452 dev->trans_start = jiffies;
1454 ei_local->lasttx = 2;
1456 else ei_local->lasttx = 20, ei_local->txing = 0;
1458 else if (ei_local->tx2 < 0)
1460 if (ei_local->lasttx != 2 && ei_local->lasttx != -2)
1461 printk("%s: bogus last_tx_buffer %d, tx2=%d.\n",
1462 ei_local->name, ei_local->lasttx, ei_local->tx2);
1464 if (ei_local->tx1 > 0)
1466 ei_local->txing = 1;
1467 NS8390_trigger_send(dev, ei_local->tx1, ei_local->tx_start_page);
1468 dev->trans_start = jiffies;
1470 ei_local->lasttx = 1;
1473 ei_local->lasttx = 10, ei_local->txing = 0;
1475 // else printk(KERN_WARNING "%s: unexpected TX-done interrupt, lasttx=%d.\n",
1476 // dev->name, ei_local->lasttx);
1478 /* Minimize Tx latency: update the statistics after we restart TXing. */
1479 if (status & ENTSR_COL)
1480 ei_local->stat.collisions++;
1481 if (status & ENTSR_PTX)
1482 ei_local->stat.tx_packets++;
1485 ei_local->stat.tx_errors++;
1486 if (status & ENTSR_ABT)
1488 ei_local->stat.tx_aborted_errors++;
1489 ei_local->stat.collisions += 16;
1491 if (status & ENTSR_CRS)
1492 ei_local->stat.tx_carrier_errors++;
1493 if (status & ENTSR_FU)
1494 ei_local->stat.tx_fifo_errors++;
1495 if (status & ENTSR_CDH)
1496 ei_local->stat.tx_heartbeat_errors++;
1497 if (status & ENTSR_OWC)
1498 ei_local->stat.tx_window_errors++;
1500 netif_wake_queue(dev);
1504 * ei_receive - receive some packets
1505 * @dev: network device with which receive will be run
1507 * We have a good packet(s), get it/them out of the buffers.
1508 * Called with lock held.
1511 static void ei_receive(struct net_device *dev)
1513 long e8390_base = dev->base_addr;
1514 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1515 unsigned char rxing_page, this_frame, next_frame;
1516 unsigned short current_offset;
1517 int rx_pkt_count = 0;
1518 struct e8390_pkt_hdr rx_frame;
1520 while (++rx_pkt_count < 10)
1522 int pkt_len, pkt_stat;
1524 /* Get the rx page (incoming packet pointer). */
1525 rxing_page = inb_p(e8390_base + EN1_CURPAG -1);
1527 /* Remove one frame from the ring. Boundary is always a page behind. */
1528 this_frame = inb_p(e8390_base + EN0_BOUNDARY) + 1;
1529 if (this_frame >= ei_local->stop_page)
1530 this_frame = ei_local->rx_start_page;
1532 /* Someday we'll omit the previous, iff we never get this message.
1533 (There is at least one clone claimed to have a problem.)
1535 Keep quiet if it looks like a card removal. One problem here
1536 is that some clones crash in roughly the same way.
1538 if (ei_debug > 0 && this_frame != ei_local->current_page && (this_frame!=0x0 || rxing_page!=0xFF))
1539 printk(KERN_ERR "%s: mismatched read page pointers %2x vs %2x.\n",
1540 dev->name, this_frame, ei_local->current_page);
1542 if (this_frame == rxing_page) /* Read all the frames? */
1543 break; /* Done for now */
1545 current_offset = this_frame << 8;
1546 ei_get_8390_hdr(dev, &rx_frame, this_frame);
1548 pkt_len = rx_frame.count - sizeof(struct e8390_pkt_hdr);
1549 pkt_stat = rx_frame.status;
1551 next_frame = this_frame + 1 + ((pkt_len+4)>>8);
1553 if (pkt_len < 60 || pkt_len > 1518)
1556 printk(KERN_DEBUG "%s: bogus packet size: %d, status=%#2x nxpg=%#2x.\n",
1557 dev->name, rx_frame.count, rx_frame.status,
1559 ei_local->stat.rx_errors++;
1560 ei_local->stat.rx_length_errors++;
1562 else if ((pkt_stat & 0x0F) == ENRSR_RXOK)
1564 struct sk_buff *skb;
1566 skb = dev_alloc_skb(pkt_len+2);
1570 printk(KERN_DEBUG "%s: Couldn't allocate a sk_buff of size %d.\n",
1571 dev->name, pkt_len);
1572 ei_local->stat.rx_dropped++;
1577 skb_reserve(skb,2); /* IP headers on 16 byte boundaries */
1579 skb_put(skb, pkt_len); /* Make room */
1580 ei_block_input(dev, pkt_len, skb, current_offset + sizeof(rx_frame));
1581 skb->protocol=eth_type_trans(skb,dev);
1583 dev->last_rx = jiffies;
1584 ei_local->stat.rx_packets++;
1585 ei_local->stat.rx_bytes += pkt_len;
1586 if (pkt_stat & ENRSR_PHY)
1587 ei_local->stat.multicast++;
1593 printk(KERN_DEBUG "%s: bogus packet: status=%#2x nxpg=%#2x size=%d\n",
1594 dev->name, rx_frame.status, rx_frame.next,
1596 ei_local->stat.rx_errors++;
1597 /* NB: The NIC counts CRC, frame and missed errors. */
1598 if (pkt_stat & ENRSR_FO)
1599 ei_local->stat.rx_fifo_errors++;
1601 next_frame = rx_frame.next;
1603 /* This _should_ never happen: it's here for avoiding bad clones. */
1604 if (next_frame >= ei_local->stop_page) {
1605 printk("%s: next frame inconsistency, %#2x\n", dev->name,
1607 next_frame = ei_local->rx_start_page;
1609 ei_local->current_page = next_frame;
1610 outb_p(next_frame-1, e8390_base+EN0_BOUNDARY);
1617 * ei_rx_overrun - handle receiver overrun
1618 * @dev: network device which threw exception
1620 * We have a receiver overrun: we have to kick the 8390 to get it started
1621 * again. Problem is that you have to kick it exactly as NS prescribes in
1622 * the updated datasheets, or "the NIC may act in an unpredictable manner."
1623 * This includes causing "the NIC to defer indefinitely when it is stopped
1624 * on a busy network." Ugh.
1625 * Called with lock held. Don't call this with the interrupts off or your
1626 * computer will hate you - it takes 10ms or so.
1629 static void ei_rx_overrun(struct net_device *dev)
1631 axnet_dev_t *info = (axnet_dev_t *)dev;
1632 long e8390_base = dev->base_addr;
1633 unsigned char was_txing, must_resend = 0;
1634 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1637 * Record whether a Tx was in progress and then issue the
1640 was_txing = inb_p(e8390_base+E8390_CMD) & E8390_TRANS;
1641 outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD);
1644 printk(KERN_DEBUG "%s: Receiver overrun.\n", dev->name);
1645 ei_local->stat.rx_over_errors++;
1648 * Wait a full Tx time (1.2ms) + some guard time, NS says 1.6ms total.
1649 * Early datasheets said to poll the reset bit, but now they say that
1650 * it "is not a reliable indicator and subsequently should be ignored."
1651 * We wait at least 10ms.
1657 * Reset RBCR[01] back to zero as per magic incantation.
1659 outb_p(0x00, e8390_base+EN0_RCNTLO);
1660 outb_p(0x00, e8390_base+EN0_RCNTHI);
1663 * See if any Tx was interrupted or not. According to NS, this
1664 * step is vital, and skipping it will cause no end of havoc.
1669 unsigned char tx_completed = inb_p(e8390_base+EN0_ISR) & (ENISR_TX+ENISR_TX_ERR);
1675 * Have to enter loopback mode and then restart the NIC before
1676 * you are allowed to slurp packets up off the ring.
1678 outb_p(E8390_TXOFF, e8390_base + EN0_TXCR);
1679 outb_p(E8390_NODMA + E8390_PAGE0 + E8390_START, e8390_base + E8390_CMD);
1682 * Clear the Rx ring of all the debris, and ack the interrupt.
1687 * Leave loopback mode, and resend any packet that got stopped.
1689 outb_p(E8390_TXCONFIG | info->duplex_flag, e8390_base + EN0_TXCR);
1691 outb_p(E8390_NODMA + E8390_PAGE0 + E8390_START + E8390_TRANS, e8390_base + E8390_CMD);
1695 * Collect the stats. This is called unlocked and from several contexts.
1698 static struct net_device_stats *get_stats(struct net_device *dev)
1700 long ioaddr = dev->base_addr;
1701 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1702 unsigned long flags;
1704 /* If the card is stopped, just return the present stats. */
1705 if (!netif_running(dev))
1706 return &ei_local->stat;
1708 spin_lock_irqsave(&ei_local->page_lock,flags);
1709 /* Read the counter registers, assuming we are in page 0. */
1710 ei_local->stat.rx_frame_errors += inb_p(ioaddr + EN0_COUNTER0);
1711 ei_local->stat.rx_crc_errors += inb_p(ioaddr + EN0_COUNTER1);
1712 ei_local->stat.rx_missed_errors+= inb_p(ioaddr + EN0_COUNTER2);
1713 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1715 return &ei_local->stat;
1719 * do_set_multicast_list - set/clear multicast filter
1720 * @dev: net device for which multicast filter is adjusted
1722 * Set or clear the multicast filter for this adaptor. May be called
1723 * from a BH in 2.1.x. Must be called with lock held.
1726 static void do_set_multicast_list(struct net_device *dev)
1728 long e8390_base = dev->base_addr;
1730 if(dev->flags&IFF_PROMISC)
1731 outb_p(E8390_RXCONFIG | 0x58, e8390_base + EN0_RXCR);
1732 else if(dev->flags&IFF_ALLMULTI || dev->mc_list)
1733 outb_p(E8390_RXCONFIG | 0x48, e8390_base + EN0_RXCR);
1735 outb_p(E8390_RXCONFIG | 0x40, e8390_base + EN0_RXCR);
1739 * Called without lock held. This is invoked from user context and may
1740 * be parallel to just about everything else. Its also fairly quick and
1741 * not called too often. Must protect against both bh and irq users
1744 static void set_multicast_list(struct net_device *dev)
1746 unsigned long flags;
1748 spin_lock_irqsave(&dev_lock(dev), flags);
1749 do_set_multicast_list(dev);
1750 spin_unlock_irqrestore(&dev_lock(dev), flags);
1754 * axdev_setup - init rest of 8390 device struct
1755 * @dev: network device structure to init
1757 * Initialize the rest of the 8390 device structure. Do NOT __init
1758 * this, as it is used by 8390 based modular drivers too.
1761 static void axdev_setup(struct net_device *dev)
1763 struct ei_device *ei_local;
1765 printk(version_8390);
1767 SET_MODULE_OWNER(dev);
1770 ei_local = (struct ei_device *)netdev_priv(dev);
1771 spin_lock_init(&ei_local->page_lock);
1773 dev->hard_start_xmit = &ei_start_xmit;
1774 dev->get_stats = get_stats;
1775 dev->set_multicast_list = &set_multicast_list;
1780 /* This page of functions should be 8390 generic */
1781 /* Follow National Semi's recommendations for initializing the "NIC". */
1784 * AX88190_init - initialize 8390 hardware
1785 * @dev: network device to initialize
1786 * @startp: boolean. non-zero value to initiate chip processing
1788 * Must be called with lock held.
1791 static void AX88190_init(struct net_device *dev, int startp)
1793 axnet_dev_t *info = PRIV(dev);
1794 long e8390_base = dev->base_addr;
1795 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1797 int endcfg = ei_local->word16 ? (0x48 | ENDCFG_WTS) : 0x48;
1799 if(sizeof(struct e8390_pkt_hdr)!=4)
1800 panic("8390.c: header struct mispacked\n");
1801 /* Follow National Semi's recommendations for initing the DP83902. */
1802 outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD); /* 0x21 */
1803 outb_p(endcfg, e8390_base + EN0_DCFG); /* 0x48 or 0x49 */
1804 /* Clear the remote byte count registers. */
1805 outb_p(0x00, e8390_base + EN0_RCNTLO);
1806 outb_p(0x00, e8390_base + EN0_RCNTHI);
1807 /* Set to monitor and loopback mode -- this is vital!. */
1808 outb_p(E8390_RXOFF|0x40, e8390_base + EN0_RXCR); /* 0x60 */
1809 outb_p(E8390_TXOFF, e8390_base + EN0_TXCR); /* 0x02 */
1810 /* Set the transmit page and receive ring. */
1811 outb_p(ei_local->tx_start_page, e8390_base + EN0_TPSR);
1812 ei_local->tx1 = ei_local->tx2 = 0;
1813 outb_p(ei_local->rx_start_page, e8390_base + EN0_STARTPG);
1814 outb_p(ei_local->stop_page-1, e8390_base + EN0_BOUNDARY); /* 3c503 says 0x3f,NS0x26*/
1815 ei_local->current_page = ei_local->rx_start_page; /* assert boundary+1 */
1816 outb_p(ei_local->stop_page, e8390_base + EN0_STOPPG);
1817 /* Clear the pending interrupts and mask. */
1818 outb_p(0xFF, e8390_base + EN0_ISR);
1819 outb_p(0x00, e8390_base + EN0_IMR);
1821 /* Copy the station address into the DS8390 registers. */
1823 outb_p(E8390_NODMA + E8390_PAGE1 + E8390_STOP, e8390_base+E8390_CMD); /* 0x61 */
1824 for(i = 0; i < 6; i++)
1826 outb_p(dev->dev_addr[i], e8390_base + EN1_PHYS_SHIFT(i));
1827 if(inb_p(e8390_base + EN1_PHYS_SHIFT(i))!=dev->dev_addr[i])
1828 printk(KERN_ERR "Hw. address read/write mismap %d\n",i);
1831 * Initialize the multicast list to accept-all. If we enable multicast
1832 * the higher levels can do the filtering.
1834 for (i = 0; i < 8; i++)
1835 outb_p(0xff, e8390_base + EN1_MULT + i);
1837 outb_p(ei_local->rx_start_page, e8390_base + EN1_CURPAG);
1838 outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD);
1840 netif_start_queue(dev);
1841 ei_local->tx1 = ei_local->tx2 = 0;
1842 ei_local->txing = 0;
1846 outb_p(0xff, e8390_base + EN0_ISR);
1847 outb_p(ENISR_ALL, e8390_base + EN0_IMR);
1848 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, e8390_base+E8390_CMD);
1849 outb_p(E8390_TXCONFIG | info->duplex_flag,
1850 e8390_base + EN0_TXCR); /* xmit on. */
1851 /* 3c503 TechMan says rxconfig only after the NIC is started. */
1852 outb_p(E8390_RXCONFIG | 0x40, e8390_base + EN0_RXCR); /* rx on, */
1853 do_set_multicast_list(dev); /* (re)load the mcast table */
1857 /* Trigger a transmit start, assuming the length is valid.
1858 Always called with the page lock held */
1860 static void NS8390_trigger_send(struct net_device *dev, unsigned int length,
1863 long e8390_base = dev->base_addr;
1864 struct ei_device *ei_local __attribute((unused)) = (struct ei_device *) netdev_priv(dev);
1866 if (inb_p(e8390_base) & E8390_TRANS)
1868 printk(KERN_WARNING "%s: trigger_send() called with the transmitter busy.\n",
1872 outb_p(length & 0xff, e8390_base + EN0_TCNTLO);
1873 outb_p(length >> 8, e8390_base + EN0_TCNTHI);
1874 outb_p(start_page, e8390_base + EN0_TPSR);
1875 outb_p(E8390_NODMA+E8390_TRANS+E8390_START, e8390_base+E8390_CMD);