1 /*======================================================================
3 A PCMCIA ethernet driver for Asix AX88190-based cards
5 The Asix AX88190 is a NS8390-derived chipset with a few nasty
6 idiosyncracies that make it very inconvenient to support with a
7 standard 8390 driver. This driver is based on pcnet_cs, with the
8 tweaked 8390 code grafted on the end. Much of what I did was to
9 clean up and update a similar driver supplied by Asix, which was
10 adapted by William Lee, william@asix.com.tw.
12 Copyright (C) 2001 David A. Hinds -- dahinds@users.sourceforge.net
14 axnet_cs.c 1.28 2002/06/29 06:27:37
16 The network driver code is based on Donald Becker's NE2000 code:
18 Written 1992,1993 by Donald Becker.
19 Copyright 1993 United States Government as represented by the
20 Director, National Security Agency. This software may be used and
21 distributed according to the terms of the GNU General Public License,
22 incorporated herein by reference.
23 Donald Becker may be reached at becker@scyld.com
25 ======================================================================*/
27 #include <linux/kernel.h>
28 #include <linux/module.h>
29 #include <linux/init.h>
30 #include <linux/ptrace.h>
31 #include <linux/slab.h>
32 #include <linux/string.h>
33 #include <linux/timer.h>
34 #include <linux/delay.h>
35 #include <linux/spinlock.h>
36 #include <linux/ethtool.h>
37 #include <linux/netdevice.h>
38 #include <linux/crc32.h>
41 #include <pcmcia/cs_types.h>
42 #include <pcmcia/cs.h>
43 #include <pcmcia/cistpl.h>
44 #include <pcmcia/ciscode.h>
45 #include <pcmcia/ds.h>
46 #include <pcmcia/cisreg.h>
49 #include <asm/system.h>
50 #include <asm/byteorder.h>
51 #include <asm/uaccess.h>
53 #define AXNET_CMD 0x00
54 #define AXNET_DATAPORT 0x10 /* NatSemi-defined port window offset. */
55 #define AXNET_RESET 0x1f /* Issue a read to reset, a write to clear. */
56 #define AXNET_MII_EEP 0x14 /* Offset of MII access port */
57 #define AXNET_TEST 0x15 /* Offset of TEST Register port */
58 #define AXNET_GPIO 0x17 /* Offset of General Purpose Register Port */
60 #define AXNET_START_PG 0x40 /* First page of TX buffer */
61 #define AXNET_STOP_PG 0x80 /* Last page +1 of RX ring */
63 #define AXNET_RDC_TIMEOUT 0x02 /* Max wait in jiffies for Tx RDC */
65 #define IS_AX88190 0x0001
66 #define IS_AX88790 0x0002
68 /*====================================================================*/
70 /* Module parameters */
72 MODULE_AUTHOR("David Hinds <dahinds@users.sourceforge.net>");
73 MODULE_DESCRIPTION("Asix AX88190 PCMCIA ethernet driver");
74 MODULE_LICENSE("GPL");
77 #define INT_MODULE_PARM(n, v) static int n = v; module_param(n, int, 0)
79 INT_MODULE_PARM(pc_debug, PCMCIA_DEBUG);
80 #define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args)
81 static char *version =
82 "axnet_cs.c 1.28 2002/06/29 06:27:37 (David Hinds)";
84 #define DEBUG(n, args...)
87 /*====================================================================*/
89 static void axnet_config(dev_link_t *link);
90 static void axnet_release(dev_link_t *link);
91 static int axnet_open(struct net_device *dev);
92 static int axnet_close(struct net_device *dev);
93 static int axnet_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
94 static struct ethtool_ops netdev_ethtool_ops;
95 static irqreturn_t ei_irq_wrapper(int irq, void *dev_id, struct pt_regs *regs);
96 static void ei_watchdog(u_long arg);
97 static void axnet_reset_8390(struct net_device *dev);
99 static int mdio_read(kio_addr_t addr, int phy_id, int loc);
100 static void mdio_write(kio_addr_t addr, int phy_id, int loc, int value);
102 static void get_8390_hdr(struct net_device *,
103 struct e8390_pkt_hdr *, int);
104 static void block_input(struct net_device *dev, int count,
105 struct sk_buff *skb, int ring_offset);
106 static void block_output(struct net_device *dev, int count,
107 const u_char *buf, const int start_page);
109 static void axnet_detach(struct pcmcia_device *p_dev);
111 static void axdev_setup(struct net_device *dev);
112 static void AX88190_init(struct net_device *dev, int startp);
113 static int ax_open(struct net_device *dev);
114 static int ax_close(struct net_device *dev);
115 static irqreturn_t ax_interrupt(int irq, void *dev_id, struct pt_regs *regs);
117 /*====================================================================*/
119 typedef struct axnet_dev_t {
123 struct timer_list watchdog;
124 int stale, fast_poll;
131 static inline axnet_dev_t *PRIV(struct net_device *dev)
133 void *p = (char *)netdev_priv(dev) + sizeof(struct ei_device);
137 /*======================================================================
139 axnet_attach() creates an "instance" of the driver, allocating
140 local data structures for one device. The device is registered
143 ======================================================================*/
145 static int axnet_attach(struct pcmcia_device *p_dev)
149 struct net_device *dev;
151 DEBUG(0, "axnet_attach()\n");
153 dev = alloc_netdev(sizeof(struct ei_device) + sizeof(axnet_dev_t),
154 "eth%d", axdev_setup);
162 link->irq.Attributes = IRQ_TYPE_EXCLUSIVE;
163 link->irq.IRQInfo1 = IRQ_LEVEL_ID;
164 link->conf.Attributes = CONF_ENABLE_IRQ;
165 link->conf.IntType = INT_MEMORY_AND_IO;
167 dev->open = &axnet_open;
168 dev->stop = &axnet_close;
169 dev->do_ioctl = &axnet_ioctl;
170 SET_ETHTOOL_OPS(dev, &netdev_ethtool_ops);
172 link->handle = p_dev;
173 p_dev->instance = link;
175 link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
181 /*======================================================================
183 This deletes a driver "instance". The device is de-registered
184 with Card Services. If it has been released, all local data
185 structures are freed. Otherwise, the structures will be freed
186 when the device is released.
188 ======================================================================*/
190 static void axnet_detach(struct pcmcia_device *p_dev)
192 dev_link_t *link = dev_to_instance(p_dev);
193 struct net_device *dev = link->priv;
195 DEBUG(0, "axnet_detach(0x%p)\n", link);
198 unregister_netdev(dev);
200 if (link->state & DEV_CONFIG)
206 /*======================================================================
208 This probes for a card's hardware address by reading the PROM.
210 ======================================================================*/
212 static int get_prom(dev_link_t *link)
214 struct net_device *dev = link->priv;
215 kio_addr_t ioaddr = dev->base_addr;
218 /* This is based on drivers/net/ne.c */
220 u_char value, offset;
222 {E8390_NODMA+E8390_PAGE0+E8390_STOP, E8390_CMD}, /* Select page 0*/
223 {0x01, EN0_DCFG}, /* Set word-wide access. */
224 {0x00, EN0_RCNTLO}, /* Clear the count regs. */
226 {0x00, EN0_IMR}, /* Mask completion irq. */
228 {E8390_RXOFF|0x40, EN0_RXCR}, /* 0x60 Set to monitor */
229 {E8390_TXOFF, EN0_TXCR}, /* 0x02 and loopback mode. */
232 {0x00, EN0_RSARLO}, /* DMA starting at 0x0400. */
234 {E8390_RREAD+E8390_START, E8390_CMD},
237 /* Not much of a test, but the alternatives are messy */
238 if (link->conf.ConfigBase != 0x03c0)
241 axnet_reset_8390(dev);
244 for (i = 0; i < sizeof(program_seq)/sizeof(program_seq[0]); i++)
245 outb_p(program_seq[i].value, ioaddr + program_seq[i].offset);
247 for (i = 0; i < 6; i += 2) {
248 j = inw(ioaddr + AXNET_DATAPORT);
249 dev->dev_addr[i] = j & 0xff;
250 dev->dev_addr[i+1] = j >> 8;
255 /*======================================================================
257 axnet_config() is scheduled to run after a CARD_INSERTION event
258 is received, to configure the PCMCIA socket, and to make the
259 ethernet device available to the system.
261 ======================================================================*/
263 #define CS_CHECK(fn, ret) \
264 do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
266 static int try_io_port(dev_link_t *link)
269 if (link->io.NumPorts1 == 32) {
270 link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;
271 if (link->io.NumPorts2 > 0) {
272 /* for master/slave multifunction cards */
273 link->io.Attributes2 = IO_DATA_PATH_WIDTH_8;
274 link->irq.Attributes =
275 IRQ_TYPE_DYNAMIC_SHARING|IRQ_FIRST_SHARED;
278 /* This should be two 16-port windows */
279 link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
280 link->io.Attributes2 = IO_DATA_PATH_WIDTH_16;
282 if (link->io.BasePort1 == 0) {
283 link->io.IOAddrLines = 16;
284 for (j = 0; j < 0x400; j += 0x20) {
285 link->io.BasePort1 = j ^ 0x300;
286 link->io.BasePort2 = (j ^ 0x300) + 0x10;
287 ret = pcmcia_request_io(link->handle, &link->io);
288 if (ret == CS_SUCCESS) return ret;
292 return pcmcia_request_io(link->handle, &link->io);
296 static void axnet_config(dev_link_t *link)
298 client_handle_t handle = link->handle;
299 struct net_device *dev = link->priv;
300 axnet_dev_t *info = PRIV(dev);
303 int i, j, last_ret, last_fn;
307 DEBUG(0, "axnet_config(0x%p)\n", link);
309 tuple.Attributes = 0;
310 tuple.TupleData = (cisdata_t *)buf;
311 tuple.TupleDataMax = sizeof(buf);
312 tuple.TupleOffset = 0;
313 tuple.DesiredTuple = CISTPL_CONFIG;
314 CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
315 CS_CHECK(GetTupleData, pcmcia_get_tuple_data(handle, &tuple));
316 CS_CHECK(ParseTuple, pcmcia_parse_tuple(handle, &tuple, &parse));
317 link->conf.ConfigBase = parse.config.base;
318 /* don't trust the CIS on this; Linksys got it wrong */
319 link->conf.Present = 0x63;
322 link->state |= DEV_CONFIG;
324 /* Look up current Vcc */
325 CS_CHECK(GetConfigurationInfo, pcmcia_get_configuration_info(handle, &conf));
326 link->conf.Vcc = conf.Vcc;
328 tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
329 tuple.Attributes = 0;
330 CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
331 while (last_ret == CS_SUCCESS) {
332 cistpl_cftable_entry_t *cfg = &(parse.cftable_entry);
333 cistpl_io_t *io = &(parse.cftable_entry.io);
335 if (pcmcia_get_tuple_data(handle, &tuple) != 0 ||
336 pcmcia_parse_tuple(handle, &tuple, &parse) != 0 ||
337 cfg->index == 0 || cfg->io.nwin == 0)
340 link->conf.ConfigIndex = 0x05;
341 /* For multifunction cards, by convention, we configure the
342 network function with window 0, and serial with window 1 */
344 i = (io->win[1].len > io->win[0].len);
345 link->io.BasePort2 = io->win[1-i].base;
346 link->io.NumPorts2 = io->win[1-i].len;
348 i = link->io.NumPorts2 = 0;
350 link->io.BasePort1 = io->win[i].base;
351 link->io.NumPorts1 = io->win[i].len;
352 link->io.IOAddrLines = io->flags & CISTPL_IO_LINES_MASK;
353 if (link->io.NumPorts1 + link->io.NumPorts2 >= 32) {
354 last_ret = try_io_port(link);
355 if (last_ret == CS_SUCCESS) break;
358 last_ret = pcmcia_get_next_tuple(handle, &tuple);
360 if (last_ret != CS_SUCCESS) {
361 cs_error(handle, RequestIO, last_ret);
365 CS_CHECK(RequestIRQ, pcmcia_request_irq(handle, &link->irq));
367 if (link->io.NumPorts2 == 8) {
368 link->conf.Attributes |= CONF_ENABLE_SPKR;
369 link->conf.Status = CCSR_AUDIO_ENA;
372 CS_CHECK(RequestConfiguration, pcmcia_request_configuration(handle, &link->conf));
373 dev->irq = link->irq.AssignedIRQ;
374 dev->base_addr = link->io.BasePort1;
376 if (!get_prom(link)) {
377 printk(KERN_NOTICE "axnet_cs: this is not an AX88190 card!\n");
378 printk(KERN_NOTICE "axnet_cs: use pcnet_cs instead.\n");
382 ei_status.name = "AX88190";
383 ei_status.word16 = 1;
384 ei_status.tx_start_page = AXNET_START_PG;
385 ei_status.rx_start_page = AXNET_START_PG + TX_PAGES;
386 ei_status.stop_page = AXNET_STOP_PG;
387 ei_status.reset_8390 = &axnet_reset_8390;
388 ei_status.get_8390_hdr = &get_8390_hdr;
389 ei_status.block_input = &block_input;
390 ei_status.block_output = &block_output;
392 if (inb(dev->base_addr + AXNET_TEST) != 0)
393 info->flags |= IS_AX88790;
395 info->flags |= IS_AX88190;
397 if (info->flags & IS_AX88790)
398 outb(0x10, dev->base_addr + AXNET_GPIO); /* select Internal PHY */
400 for (i = 0; i < 32; i++) {
401 j = mdio_read(dev->base_addr + AXNET_MII_EEP, i, 1);
402 if ((j != 0) && (j != 0xffff)) break;
405 /* Maybe PHY is in power down mode. (PPD_SET = 1)
406 Bit 2 of CCSR is active low. */
408 conf_reg_t reg = { 0, CS_WRITE, CISREG_CCSR, 0x04 };
409 pcmcia_access_configuration_register(link->handle, ®);
410 for (i = 0; i < 32; i++) {
411 j = mdio_read(dev->base_addr + AXNET_MII_EEP, i, 1);
412 if ((j != 0) && (j != 0xffff)) break;
416 info->phy_id = (i < 32) ? i : -1;
417 link->dev = &info->node;
418 link->state &= ~DEV_CONFIG_PENDING;
419 SET_NETDEV_DEV(dev, &handle_to_dev(handle));
421 if (register_netdev(dev) != 0) {
422 printk(KERN_NOTICE "axnet_cs: register_netdev() failed\n");
427 strcpy(info->node.dev_name, dev->name);
429 printk(KERN_INFO "%s: Asix AX88%d90: io %#3lx, irq %d, hw_addr ",
430 dev->name, ((info->flags & IS_AX88790) ? 7 : 1),
431 dev->base_addr, dev->irq);
432 for (i = 0; i < 6; i++)
433 printk("%02X%s", dev->dev_addr[i], ((i<5) ? ":" : "\n"));
434 if (info->phy_id != -1) {
435 DEBUG(0, " MII transceiver at index %d, status %x.\n", info->phy_id, j);
437 printk(KERN_NOTICE " No MII transceivers found!\n");
442 cs_error(link->handle, last_fn, last_ret);
445 link->state &= ~DEV_CONFIG_PENDING;
449 /*======================================================================
451 After a card is removed, axnet_release() will unregister the net
452 device, and release the PCMCIA configuration. If the device is
453 still open, this will be postponed until it is closed.
455 ======================================================================*/
457 static void axnet_release(dev_link_t *link)
459 pcmcia_disable_device(link->handle);
462 static int axnet_suspend(struct pcmcia_device *p_dev)
464 dev_link_t *link = dev_to_instance(p_dev);
465 struct net_device *dev = link->priv;
467 if ((link->state & DEV_CONFIG) && (link->open))
468 netif_device_detach(dev);
473 static int axnet_resume(struct pcmcia_device *p_dev)
475 dev_link_t *link = dev_to_instance(p_dev);
476 struct net_device *dev = link->priv;
478 if ((link->state & DEV_CONFIG) && (link->open)) {
479 axnet_reset_8390(dev);
480 AX88190_init(dev, 1);
481 netif_device_attach(dev);
488 /*======================================================================
490 MII interface support
492 ======================================================================*/
494 #define MDIO_SHIFT_CLK 0x01
495 #define MDIO_DATA_WRITE0 0x00
496 #define MDIO_DATA_WRITE1 0x08
497 #define MDIO_DATA_READ 0x04
498 #define MDIO_MASK 0x0f
499 #define MDIO_ENB_IN 0x02
501 static void mdio_sync(kio_addr_t addr)
504 for (bits = 0; bits < 32; bits++) {
505 outb_p(MDIO_DATA_WRITE1, addr);
506 outb_p(MDIO_DATA_WRITE1 | MDIO_SHIFT_CLK, addr);
510 static int mdio_read(kio_addr_t addr, int phy_id, int loc)
512 u_int cmd = (0xf6<<10)|(phy_id<<5)|loc;
516 for (i = 14; i >= 0; i--) {
517 int dat = (cmd&(1<<i)) ? MDIO_DATA_WRITE1 : MDIO_DATA_WRITE0;
519 outb_p(dat | MDIO_SHIFT_CLK, addr);
521 for (i = 19; i > 0; i--) {
522 outb_p(MDIO_ENB_IN, addr);
523 retval = (retval << 1) | ((inb_p(addr) & MDIO_DATA_READ) != 0);
524 outb_p(MDIO_ENB_IN | MDIO_SHIFT_CLK, addr);
526 return (retval>>1) & 0xffff;
529 static void mdio_write(kio_addr_t addr, int phy_id, int loc, int value)
531 u_int cmd = (0x05<<28)|(phy_id<<23)|(loc<<18)|(1<<17)|value;
535 for (i = 31; i >= 0; i--) {
536 int dat = (cmd&(1<<i)) ? MDIO_DATA_WRITE1 : MDIO_DATA_WRITE0;
538 outb_p(dat | MDIO_SHIFT_CLK, addr);
540 for (i = 1; i >= 0; i--) {
541 outb_p(MDIO_ENB_IN, addr);
542 outb_p(MDIO_ENB_IN | MDIO_SHIFT_CLK, addr);
546 /*====================================================================*/
548 static int axnet_open(struct net_device *dev)
550 axnet_dev_t *info = PRIV(dev);
551 dev_link_t *link = &info->link;
553 DEBUG(2, "axnet_open('%s')\n", dev->name);
560 request_irq(dev->irq, ei_irq_wrapper, SA_SHIRQ, "axnet_cs", dev);
562 info->link_status = 0x00;
563 init_timer(&info->watchdog);
564 info->watchdog.function = &ei_watchdog;
565 info->watchdog.data = (u_long)dev;
566 info->watchdog.expires = jiffies + HZ;
567 add_timer(&info->watchdog);
572 /*====================================================================*/
574 static int axnet_close(struct net_device *dev)
576 axnet_dev_t *info = PRIV(dev);
577 dev_link_t *link = &info->link;
579 DEBUG(2, "axnet_close('%s')\n", dev->name);
582 free_irq(dev->irq, dev);
585 netif_stop_queue(dev);
586 del_timer_sync(&info->watchdog);
591 /*======================================================================
593 Hard reset the card. This used to pause for the same period that
594 a 8390 reset command required, but that shouldn't be necessary.
596 ======================================================================*/
598 static void axnet_reset_8390(struct net_device *dev)
600 kio_addr_t nic_base = dev->base_addr;
603 ei_status.txing = ei_status.dmaing = 0;
605 outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, nic_base + E8390_CMD);
607 outb(inb(nic_base + AXNET_RESET), nic_base + AXNET_RESET);
609 for (i = 0; i < 100; i++) {
610 if ((inb_p(nic_base+EN0_ISR) & ENISR_RESET) != 0)
614 outb_p(ENISR_RESET, nic_base + EN0_ISR); /* Ack intr. */
617 printk(KERN_ERR "%s: axnet_reset_8390() did not complete.\n",
620 } /* axnet_reset_8390 */
622 /*====================================================================*/
624 static irqreturn_t ei_irq_wrapper(int irq, void *dev_id, struct pt_regs *regs)
626 struct net_device *dev = dev_id;
627 PRIV(dev)->stale = 0;
628 return ax_interrupt(irq, dev_id, regs);
631 static void ei_watchdog(u_long arg)
633 struct net_device *dev = (struct net_device *)(arg);
634 axnet_dev_t *info = PRIV(dev);
635 kio_addr_t nic_base = dev->base_addr;
636 kio_addr_t mii_addr = nic_base + AXNET_MII_EEP;
639 if (!netif_device_present(dev)) goto reschedule;
641 /* Check for pending interrupt with expired latency timer: with
642 this, we can limp along even if the interrupt is blocked */
643 if (info->stale++ && (inb_p(nic_base + EN0_ISR) & ENISR_ALL)) {
644 if (!info->fast_poll)
645 printk(KERN_INFO "%s: interrupt(s) dropped!\n", dev->name);
646 ei_irq_wrapper(dev->irq, dev, NULL);
647 info->fast_poll = HZ;
649 if (info->fast_poll) {
651 info->watchdog.expires = jiffies + 1;
652 add_timer(&info->watchdog);
656 if (info->phy_id < 0)
658 link = mdio_read(mii_addr, info->phy_id, 1);
659 if (!link || (link == 0xffff)) {
660 printk(KERN_INFO "%s: MII is missing!\n", dev->name);
666 if (link != info->link_status) {
667 u_short p = mdio_read(mii_addr, info->phy_id, 5);
668 printk(KERN_INFO "%s: %s link beat\n", dev->name,
669 (link) ? "found" : "lost");
671 info->duplex_flag = (p & 0x0140) ? 0x80 : 0x00;
673 printk(KERN_INFO "%s: autonegotiation complete: "
674 "%sbaseT-%cD selected\n", dev->name,
675 ((p & 0x0180) ? "100" : "10"),
676 ((p & 0x0140) ? 'F' : 'H'));
678 printk(KERN_INFO "%s: link partner did not autonegotiate\n",
680 AX88190_init(dev, 1);
682 info->link_status = link;
686 info->watchdog.expires = jiffies + HZ;
687 add_timer(&info->watchdog);
690 static void netdev_get_drvinfo(struct net_device *dev,
691 struct ethtool_drvinfo *info)
693 strcpy(info->driver, "axnet_cs");
696 static struct ethtool_ops netdev_ethtool_ops = {
697 .get_drvinfo = netdev_get_drvinfo,
700 /*====================================================================*/
702 static int axnet_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
704 axnet_dev_t *info = PRIV(dev);
705 u16 *data = (u16 *)&rq->ifr_ifru;
706 kio_addr_t mii_addr = dev->base_addr + AXNET_MII_EEP;
709 data[0] = info->phy_id;
710 case SIOCGMIIREG: /* Read MII PHY register. */
711 data[3] = mdio_read(mii_addr, data[0], data[1] & 0x1f);
713 case SIOCSMIIREG: /* Write MII PHY register. */
714 if (!capable(CAP_NET_ADMIN))
716 mdio_write(mii_addr, data[0], data[1] & 0x1f, data[2]);
722 /*====================================================================*/
724 static void get_8390_hdr(struct net_device *dev,
725 struct e8390_pkt_hdr *hdr,
728 kio_addr_t nic_base = dev->base_addr;
730 outb_p(0, nic_base + EN0_RSARLO); /* On page boundary */
731 outb_p(ring_page, nic_base + EN0_RSARHI);
732 outb_p(E8390_RREAD+E8390_START, nic_base + AXNET_CMD);
734 insw(nic_base + AXNET_DATAPORT, hdr,
735 sizeof(struct e8390_pkt_hdr)>>1);
736 /* Fix for big endian systems */
737 hdr->count = le16_to_cpu(hdr->count);
741 /*====================================================================*/
743 static void block_input(struct net_device *dev, int count,
744 struct sk_buff *skb, int ring_offset)
746 kio_addr_t nic_base = dev->base_addr;
747 int xfer_count = count;
748 char *buf = skb->data;
751 if ((ei_debug > 4) && (count != 4))
752 printk(KERN_DEBUG "%s: [bi=%d]\n", dev->name, count+4);
754 outb_p(ring_offset & 0xff, nic_base + EN0_RSARLO);
755 outb_p(ring_offset >> 8, nic_base + EN0_RSARHI);
756 outb_p(E8390_RREAD+E8390_START, nic_base + AXNET_CMD);
758 insw(nic_base + AXNET_DATAPORT,buf,count>>1);
760 buf[count-1] = inb(nic_base + AXNET_DATAPORT), xfer_count++;
764 /*====================================================================*/
766 static void block_output(struct net_device *dev, int count,
767 const u_char *buf, const int start_page)
769 kio_addr_t nic_base = dev->base_addr;
773 printk(KERN_DEBUG "%s: [bo=%d]\n", dev->name, count);
776 /* Round the count up for word writes. Do we need to do this?
777 What effect will an odd byte count have on the 8390?
778 I should check someday. */
782 outb_p(0x00, nic_base + EN0_RSARLO);
783 outb_p(start_page, nic_base + EN0_RSARHI);
784 outb_p(E8390_RWRITE+E8390_START, nic_base + AXNET_CMD);
785 outsw(nic_base + AXNET_DATAPORT, buf, count>>1);
788 static struct pcmcia_device_id axnet_ids[] = {
789 PCMCIA_PFC_DEVICE_MANF_CARD(0, 0x016c, 0x0081),
790 PCMCIA_DEVICE_MANF_CARD(0x018a, 0x0301),
791 PCMCIA_DEVICE_MANF_CARD(0x026f, 0x0301),
792 PCMCIA_DEVICE_MANF_CARD(0x026f, 0x0303),
793 PCMCIA_DEVICE_MANF_CARD(0x026f, 0x0309),
794 PCMCIA_DEVICE_MANF_CARD(0x0274, 0x1106),
795 PCMCIA_DEVICE_MANF_CARD(0x8a01, 0xc1ab),
796 PCMCIA_DEVICE_PROD_ID12("AmbiCom,Inc.", "Fast Ethernet PC Card(AMB8110)", 0x49b020a7, 0x119cc9fc),
797 PCMCIA_DEVICE_PROD_ID124("Fast Ethernet", "16-bit PC Card", "AX88190", 0xb4be14e3, 0x9a12eb6a, 0xab9be5ef),
798 PCMCIA_DEVICE_PROD_ID12("ASIX", "AX88190", 0x0959823b, 0xab9be5ef),
799 PCMCIA_DEVICE_PROD_ID12("Billionton", "LNA-100B", 0x552ab682, 0xbc3b87e1),
800 PCMCIA_DEVICE_PROD_ID12("CHEETAH ETHERCARD", "EN2228", 0x00fa7bc8, 0x00e990cc),
801 PCMCIA_DEVICE_PROD_ID12("CNet", "CNF301", 0xbc477dde, 0x78c5f40b),
802 PCMCIA_DEVICE_PROD_ID12("corega K.K.", "corega FEther PCC-TXD", 0x5261440f, 0x436768c5),
803 PCMCIA_DEVICE_PROD_ID12("corega K.K.", "corega FEtherII PCC-TXD", 0x5261440f, 0x730df72e),
804 PCMCIA_DEVICE_PROD_ID12("Dynalink", "L100C16", 0x55632fd5, 0x66bc2a90),
805 PCMCIA_DEVICE_PROD_ID12("Linksys", "EtherFast 10/100 PC Card (PCMPC100 V3)", 0x0733cc81, 0x232019a8),
806 PCMCIA_DEVICE_PROD_ID12("MELCO", "LPC3-TX", 0x481e0094, 0xf91af609),
807 PCMCIA_DEVICE_PROD_ID12("PCMCIA", "100BASE", 0x281f1c5d, 0x7c2add04),
808 PCMCIA_DEVICE_PROD_ID12("PCMCIA", "FastEtherCard", 0x281f1c5d, 0x7ef26116),
809 PCMCIA_DEVICE_PROD_ID12("PCMCIA", "FEP501", 0x281f1c5d, 0x2e272058),
810 PCMCIA_DEVICE_PROD_ID14("Network Everywhere", "AX88190", 0x820a67b6, 0xab9be5ef),
811 /* this is not specific enough */
812 /* PCMCIA_DEVICE_MANF_CARD(0x021b, 0x0202), */
815 MODULE_DEVICE_TABLE(pcmcia, axnet_ids);
817 static struct pcmcia_driver axnet_cs_driver = {
818 .owner = THIS_MODULE,
822 .probe = axnet_attach,
823 .remove = axnet_detach,
824 .id_table = axnet_ids,
825 .suspend = axnet_suspend,
826 .resume = axnet_resume,
829 static int __init init_axnet_cs(void)
831 return pcmcia_register_driver(&axnet_cs_driver);
834 static void __exit exit_axnet_cs(void)
836 pcmcia_unregister_driver(&axnet_cs_driver);
839 module_init(init_axnet_cs);
840 module_exit(exit_axnet_cs);
842 /*====================================================================*/
844 /* 8390.c: A general NS8390 ethernet driver core for linux. */
846 Written 1992-94 by Donald Becker.
848 Copyright 1993 United States Government as represented by the
849 Director, National Security Agency.
851 This software may be used and distributed according to the terms
852 of the GNU General Public License, incorporated herein by reference.
854 The author may be reached as becker@scyld.com, or C/O
855 Scyld Computing Corporation
856 410 Severn Ave., Suite 210
859 This is the chip-specific code for many 8390-based ethernet adaptors.
860 This is not a complete driver, it must be combined with board-specific
861 code such as ne.c, wd.c, 3c503.c, etc.
863 Seeing how at least eight drivers use this code, (not counting the
864 PCMCIA ones either) it is easy to break some card by what seems like
865 a simple innocent change. Please contact me or Donald if you think
866 you have found something that needs changing. -- PG
870 Paul Gortmaker : remove set_bit lock, other cleanups.
871 Paul Gortmaker : add ei_get_8390_hdr() so we can pass skb's to
872 ei_block_input() for eth_io_copy_and_sum().
873 Paul Gortmaker : exchange static int ei_pingpong for a #define,
874 also add better Tx error handling.
875 Paul Gortmaker : rewrite Rx overrun handling as per NS specs.
876 Alexey Kuznetsov : use the 8390's six bit hash multicast filter.
877 Paul Gortmaker : tweak ANK's above multicast changes a bit.
878 Paul Gortmaker : update packet statistics for v2.1.x
879 Alan Cox : support arbitary stupid port mappings on the
880 68K Macintosh. Support >16bit I/O spaces
881 Paul Gortmaker : add kmod support for auto-loading of the 8390
882 module by all drivers that require it.
883 Alan Cox : Spinlocking work, added 'BUG_83C690'
884 Paul Gortmaker : Separate out Tx timeout code from Tx path.
887 The National Semiconductor LAN Databook, and the 3Com 3c503 databook.
891 static const char *version_8390 =
892 "8390.c:v1.10cvs 9/23/94 Donald Becker (becker@scyld.com)\n";
894 #include <linux/bitops.h>
896 #include <linux/fcntl.h>
897 #include <linux/in.h>
898 #include <linux/interrupt.h>
900 #include <linux/etherdevice.h>
904 /* These are the operational function interfaces to board-specific
906 void reset_8390(struct net_device *dev)
907 Resets the board associated with DEV, including a hardware reset of
908 the 8390. This is only called when there is a transmit timeout, and
909 it is always followed by 8390_init().
910 void block_output(struct net_device *dev, int count, const unsigned char *buf,
912 Write the COUNT bytes of BUF to the packet buffer at START_PAGE. The
913 "page" value uses the 8390's 256-byte pages.
914 void get_8390_hdr(struct net_device *dev, struct e8390_hdr *hdr, int ring_page)
915 Read the 4 byte, page aligned 8390 header. *If* there is a
916 subsequent read, it will be of the rest of the packet.
917 void block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset)
918 Read COUNT bytes from the packet buffer into the skb data area. Start
919 reading from RING_OFFSET, the address as the 8390 sees it. This will always
920 follow the read of the 8390 header.
922 #define ei_reset_8390 (ei_local->reset_8390)
923 #define ei_block_output (ei_local->block_output)
924 #define ei_block_input (ei_local->block_input)
925 #define ei_get_8390_hdr (ei_local->get_8390_hdr)
927 /* use 0 for production, 1 for verification, >2 for debug */
932 /* Index to functions. */
933 static void ei_tx_intr(struct net_device *dev);
934 static void ei_tx_err(struct net_device *dev);
935 static void ei_tx_timeout(struct net_device *dev);
936 static void ei_receive(struct net_device *dev);
937 static void ei_rx_overrun(struct net_device *dev);
939 /* Routines generic to NS8390-based boards. */
940 static void NS8390_trigger_send(struct net_device *dev, unsigned int length,
942 static void set_multicast_list(struct net_device *dev);
943 static void do_set_multicast_list(struct net_device *dev);
946 * SMP and the 8390 setup.
948 * The 8390 isnt exactly designed to be multithreaded on RX/TX. There is
949 * a page register that controls bank and packet buffer access. We guard
950 * this with ei_local->page_lock. Nobody should assume or set the page other
951 * than zero when the lock is not held. Lock holders must restore page 0
952 * before unlocking. Even pure readers must take the lock to protect in
955 * To make life difficult the chip can also be very slow. We therefore can't
956 * just use spinlocks. For the longer lockups we disable the irq the device
957 * sits on and hold the lock. We must hold the lock because there is a dual
958 * processor case other than interrupts (get stats/set multicast list in
959 * parallel with each other and transmit).
961 * Note: in theory we can just disable the irq on the card _but_ there is
962 * a latency on SMP irq delivery. So we can easily go "disable irq" "sync irqs"
963 * enter lock, take the queued irq. So we waddle instead of flying.
965 * Finally by special arrangement for the purpose of being generally
966 * annoying the transmit function is called bh atomic. That places
967 * restrictions on the user context callers as disable_irq won't save
972 * ax_open - Open/initialize the board.
973 * @dev: network device to initialize
975 * This routine goes all-out, setting everything
976 * up anew at each open, even though many of these registers should only
977 * need to be set once at boot.
979 static int ax_open(struct net_device *dev)
982 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
984 #ifdef HAVE_TX_TIMEOUT
985 /* The card I/O part of the driver (e.g. 3c503) can hook a Tx timeout
986 wrapper that does e.g. media check & then calls ei_tx_timeout. */
987 if (dev->tx_timeout == NULL)
988 dev->tx_timeout = ei_tx_timeout;
989 if (dev->watchdog_timeo <= 0)
990 dev->watchdog_timeo = TX_TIMEOUT;
994 * Grab the page lock so we own the register set, then call
998 spin_lock_irqsave(&ei_local->page_lock, flags);
999 AX88190_init(dev, 1);
1000 /* Set the flag before we drop the lock, That way the IRQ arrives
1001 after its set and we get no silly warnings */
1002 netif_start_queue(dev);
1003 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1004 ei_local->irqlock = 0;
1008 #define dev_lock(dev) (((struct ei_device *)netdev_priv(dev))->page_lock)
1011 * ax_close - shut down network device
1012 * @dev: network device to close
1014 * Opposite of ax_open(). Only used when "ifconfig <devname> down" is done.
1016 int ax_close(struct net_device *dev)
1018 unsigned long flags;
1021 * Hold the page lock during close
1024 spin_lock_irqsave(&dev_lock(dev), flags);
1025 AX88190_init(dev, 0);
1026 spin_unlock_irqrestore(&dev_lock(dev), flags);
1027 netif_stop_queue(dev);
1032 * ei_tx_timeout - handle transmit time out condition
1033 * @dev: network device which has apparently fallen asleep
1035 * Called by kernel when device never acknowledges a transmit has
1036 * completed (or failed) - i.e. never posted a Tx related interrupt.
1039 void ei_tx_timeout(struct net_device *dev)
1041 long e8390_base = dev->base_addr;
1042 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1043 int txsr, isr, tickssofar = jiffies - dev->trans_start;
1044 unsigned long flags;
1046 ei_local->stat.tx_errors++;
1048 spin_lock_irqsave(&ei_local->page_lock, flags);
1049 txsr = inb(e8390_base+EN0_TSR);
1050 isr = inb(e8390_base+EN0_ISR);
1051 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1053 printk(KERN_DEBUG "%s: Tx timed out, %s TSR=%#2x, ISR=%#2x, t=%d.\n",
1054 dev->name, (txsr & ENTSR_ABT) ? "excess collisions." :
1055 (isr) ? "lost interrupt?" : "cable problem?", txsr, isr, tickssofar);
1057 if (!isr && !ei_local->stat.tx_packets)
1059 /* The 8390 probably hasn't gotten on the cable yet. */
1060 ei_local->interface_num ^= 1; /* Try a different xcvr. */
1063 /* Ugly but a reset can be slow, yet must be protected */
1065 disable_irq_nosync(dev->irq);
1066 spin_lock(&ei_local->page_lock);
1068 /* Try to restart the card. Perhaps the user has fixed something. */
1070 AX88190_init(dev, 1);
1072 spin_unlock(&ei_local->page_lock);
1073 enable_irq(dev->irq);
1074 netif_wake_queue(dev);
1078 * ei_start_xmit - begin packet transmission
1079 * @skb: packet to be sent
1080 * @dev: network device to which packet is sent
1082 * Sends a packet to an 8390 network device.
1085 static int ei_start_xmit(struct sk_buff *skb, 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 length, send_length, output_page;
1090 unsigned long flags;
1091 u8 packet[ETH_ZLEN];
1093 netif_stop_queue(dev);
1097 /* Mask interrupts from the ethercard.
1098 SMP: We have to grab the lock here otherwise the IRQ handler
1099 on another CPU can flip window and race the IRQ mask set. We end
1100 up trashing the mcast filter not disabling irqs if we don't lock */
1102 spin_lock_irqsave(&ei_local->page_lock, flags);
1103 outb_p(0x00, e8390_base + EN0_IMR);
1104 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1107 * Slow phase with lock held.
1110 disable_irq_nosync(dev->irq);
1112 spin_lock(&ei_local->page_lock);
1114 ei_local->irqlock = 1;
1116 send_length = ETH_ZLEN < length ? length : ETH_ZLEN;
1119 * We have two Tx slots available for use. Find the first free
1120 * slot, and then perform some sanity checks. With two Tx bufs,
1121 * you get very close to transmitting back-to-back packets. With
1122 * only one Tx buf, the transmitter sits idle while you reload the
1123 * card, leaving a substantial gap between each transmitted packet.
1126 if (ei_local->tx1 == 0)
1128 output_page = ei_local->tx_start_page;
1129 ei_local->tx1 = send_length;
1130 if (ei_debug && ei_local->tx2 > 0)
1131 printk(KERN_DEBUG "%s: idle transmitter tx2=%d, lasttx=%d, txing=%d.\n",
1132 dev->name, ei_local->tx2, ei_local->lasttx, ei_local->txing);
1134 else if (ei_local->tx2 == 0)
1136 output_page = ei_local->tx_start_page + TX_PAGES/2;
1137 ei_local->tx2 = send_length;
1138 if (ei_debug && ei_local->tx1 > 0)
1139 printk(KERN_DEBUG "%s: idle transmitter, tx1=%d, lasttx=%d, txing=%d.\n",
1140 dev->name, ei_local->tx1, ei_local->lasttx, ei_local->txing);
1143 { /* We should never get here. */
1145 printk(KERN_DEBUG "%s: No Tx buffers free! tx1=%d tx2=%d last=%d\n",
1146 dev->name, ei_local->tx1, ei_local->tx2, ei_local->lasttx);
1147 ei_local->irqlock = 0;
1148 netif_stop_queue(dev);
1149 outb_p(ENISR_ALL, e8390_base + EN0_IMR);
1150 spin_unlock(&ei_local->page_lock);
1151 enable_irq(dev->irq);
1152 ei_local->stat.tx_errors++;
1157 * Okay, now upload the packet and trigger a send if the transmitter
1158 * isn't already sending. If it is busy, the interrupt handler will
1159 * trigger the send later, upon receiving a Tx done interrupt.
1162 if (length == skb->len)
1163 ei_block_output(dev, length, skb->data, output_page);
1165 memset(packet, 0, ETH_ZLEN);
1166 memcpy(packet, skb->data, skb->len);
1167 ei_block_output(dev, length, packet, output_page);
1170 if (! ei_local->txing)
1172 ei_local->txing = 1;
1173 NS8390_trigger_send(dev, send_length, output_page);
1174 dev->trans_start = jiffies;
1175 if (output_page == ei_local->tx_start_page)
1178 ei_local->lasttx = -1;
1183 ei_local->lasttx = -2;
1186 else ei_local->txqueue++;
1188 if (ei_local->tx1 && ei_local->tx2)
1189 netif_stop_queue(dev);
1191 netif_start_queue(dev);
1193 /* Turn 8390 interrupts back on. */
1194 ei_local->irqlock = 0;
1195 outb_p(ENISR_ALL, e8390_base + EN0_IMR);
1197 spin_unlock(&ei_local->page_lock);
1198 enable_irq(dev->irq);
1200 dev_kfree_skb (skb);
1201 ei_local->stat.tx_bytes += send_length;
1207 * ax_interrupt - handle the interrupts from an 8390
1208 * @irq: interrupt number
1209 * @dev_id: a pointer to the net_device
1212 * Handle the ether interface interrupts. We pull packets from
1213 * the 8390 via the card specific functions and fire them at the networking
1214 * stack. We also handle transmit completions and wake the transmit path if
1215 * necessary. We also update the counters and do other housekeeping as
1219 static irqreturn_t ax_interrupt(int irq, void *dev_id, struct pt_regs * regs)
1221 struct net_device *dev = dev_id;
1223 int interrupts, nr_serviced = 0, i;
1224 struct ei_device *ei_local;
1229 printk ("net_interrupt(): irq %d for unknown device.\n", irq);
1233 e8390_base = dev->base_addr;
1234 ei_local = (struct ei_device *) netdev_priv(dev);
1237 * Protect the irq test too.
1240 spin_lock(&ei_local->page_lock);
1242 if (ei_local->irqlock)
1244 #if 1 /* This might just be an interrupt for a PCI device sharing this line */
1245 /* The "irqlock" check is only for testing. */
1246 printk(ei_local->irqlock
1247 ? "%s: Interrupted while interrupts are masked! isr=%#2x imr=%#2x.\n"
1248 : "%s: Reentering the interrupt handler! isr=%#2x imr=%#2x.\n",
1249 dev->name, inb_p(e8390_base + EN0_ISR),
1250 inb_p(e8390_base + EN0_IMR));
1252 spin_unlock(&ei_local->page_lock);
1257 printk(KERN_DEBUG "%s: interrupt(isr=%#2.2x).\n", dev->name,
1258 inb_p(e8390_base + EN0_ISR));
1260 outb_p(0x00, e8390_base + EN0_ISR);
1261 ei_local->irqlock = 1;
1263 /* !!Assumption!! -- we stay in page 0. Don't break this. */
1264 while ((interrupts = inb_p(e8390_base + EN0_ISR)) != 0
1265 && ++nr_serviced < MAX_SERVICE)
1267 if (!netif_running(dev) || (interrupts == 0xff)) {
1269 printk(KERN_WARNING "%s: interrupt from stopped card\n", dev->name);
1270 outb_p(interrupts, e8390_base + EN0_ISR);
1276 /* AX88190 bug fix. */
1277 outb_p(interrupts, e8390_base + EN0_ISR);
1278 for (i = 0; i < 10; i++) {
1279 if (!(inb(e8390_base + EN0_ISR) & interrupts))
1281 outb_p(0, e8390_base + EN0_ISR);
1282 outb_p(interrupts, e8390_base + EN0_ISR);
1284 if (interrupts & ENISR_OVER)
1286 else if (interrupts & (ENISR_RX+ENISR_RX_ERR))
1288 /* Got a good (?) packet. */
1291 /* Push the next to-transmit packet through. */
1292 if (interrupts & ENISR_TX)
1294 else if (interrupts & ENISR_TX_ERR)
1297 if (interrupts & ENISR_COUNTERS)
1299 ei_local->stat.rx_frame_errors += inb_p(e8390_base + EN0_COUNTER0);
1300 ei_local->stat.rx_crc_errors += inb_p(e8390_base + EN0_COUNTER1);
1301 ei_local->stat.rx_missed_errors+= inb_p(e8390_base + EN0_COUNTER2);
1305 if (interrupts && ei_debug)
1308 if (nr_serviced >= MAX_SERVICE)
1310 /* 0xFF is valid for a card removal */
1311 if(interrupts!=0xFF)
1312 printk(KERN_WARNING "%s: Too much work at interrupt, status %#2.2x\n",
1313 dev->name, interrupts);
1314 outb_p(ENISR_ALL, e8390_base + EN0_ISR); /* Ack. most intrs. */
1316 printk(KERN_WARNING "%s: unknown interrupt %#2x\n", dev->name, interrupts);
1317 outb_p(0xff, e8390_base + EN0_ISR); /* Ack. all intrs. */
1321 /* Turn 8390 interrupts back on. */
1322 ei_local->irqlock = 0;
1323 outb_p(ENISR_ALL, e8390_base + EN0_IMR);
1325 spin_unlock(&ei_local->page_lock);
1326 return IRQ_RETVAL(handled);
1330 * ei_tx_err - handle transmitter error
1331 * @dev: network device which threw the exception
1333 * A transmitter error has happened. Most likely excess collisions (which
1334 * is a fairly normal condition). If the error is one where the Tx will
1335 * have been aborted, we try and send another one right away, instead of
1336 * letting the failed packet sit and collect dust in the Tx buffer. This
1337 * is a much better solution as it avoids kernel based Tx timeouts, and
1338 * an unnecessary card reset.
1340 * Called with lock held.
1343 static void ei_tx_err(struct net_device *dev)
1345 long e8390_base = dev->base_addr;
1346 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1347 unsigned char txsr = inb_p(e8390_base+EN0_TSR);
1348 unsigned char tx_was_aborted = txsr & (ENTSR_ABT+ENTSR_FU);
1350 #ifdef VERBOSE_ERROR_DUMP
1351 printk(KERN_DEBUG "%s: transmitter error (%#2x): ", dev->name, txsr);
1352 if (txsr & ENTSR_ABT)
1353 printk("excess-collisions ");
1354 if (txsr & ENTSR_ND)
1355 printk("non-deferral ");
1356 if (txsr & ENTSR_CRS)
1357 printk("lost-carrier ");
1358 if (txsr & ENTSR_FU)
1359 printk("FIFO-underrun ");
1360 if (txsr & ENTSR_CDH)
1361 printk("lost-heartbeat ");
1369 ei_local->stat.tx_errors++;
1370 if (txsr & ENTSR_CRS) ei_local->stat.tx_carrier_errors++;
1371 if (txsr & ENTSR_CDH) ei_local->stat.tx_heartbeat_errors++;
1372 if (txsr & ENTSR_OWC) ei_local->stat.tx_window_errors++;
1377 * ei_tx_intr - transmit interrupt handler
1378 * @dev: network device for which tx intr is handled
1380 * We have finished a transmit: check for errors and then trigger the next
1381 * packet to be sent. Called with lock held.
1384 static void ei_tx_intr(struct net_device *dev)
1386 long e8390_base = dev->base_addr;
1387 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1388 int status = inb(e8390_base + EN0_TSR);
1391 * There are two Tx buffers, see which one finished, and trigger
1392 * the send of another one if it exists.
1394 ei_local->txqueue--;
1396 if (ei_local->tx1 < 0)
1398 if (ei_local->lasttx != 1 && ei_local->lasttx != -1)
1399 printk(KERN_ERR "%s: bogus last_tx_buffer %d, tx1=%d.\n",
1400 ei_local->name, ei_local->lasttx, ei_local->tx1);
1402 if (ei_local->tx2 > 0)
1404 ei_local->txing = 1;
1405 NS8390_trigger_send(dev, ei_local->tx2, ei_local->tx_start_page + 6);
1406 dev->trans_start = jiffies;
1408 ei_local->lasttx = 2;
1410 else ei_local->lasttx = 20, ei_local->txing = 0;
1412 else if (ei_local->tx2 < 0)
1414 if (ei_local->lasttx != 2 && ei_local->lasttx != -2)
1415 printk("%s: bogus last_tx_buffer %d, tx2=%d.\n",
1416 ei_local->name, ei_local->lasttx, ei_local->tx2);
1418 if (ei_local->tx1 > 0)
1420 ei_local->txing = 1;
1421 NS8390_trigger_send(dev, ei_local->tx1, ei_local->tx_start_page);
1422 dev->trans_start = jiffies;
1424 ei_local->lasttx = 1;
1427 ei_local->lasttx = 10, ei_local->txing = 0;
1429 // else printk(KERN_WARNING "%s: unexpected TX-done interrupt, lasttx=%d.\n",
1430 // dev->name, ei_local->lasttx);
1432 /* Minimize Tx latency: update the statistics after we restart TXing. */
1433 if (status & ENTSR_COL)
1434 ei_local->stat.collisions++;
1435 if (status & ENTSR_PTX)
1436 ei_local->stat.tx_packets++;
1439 ei_local->stat.tx_errors++;
1440 if (status & ENTSR_ABT)
1442 ei_local->stat.tx_aborted_errors++;
1443 ei_local->stat.collisions += 16;
1445 if (status & ENTSR_CRS)
1446 ei_local->stat.tx_carrier_errors++;
1447 if (status & ENTSR_FU)
1448 ei_local->stat.tx_fifo_errors++;
1449 if (status & ENTSR_CDH)
1450 ei_local->stat.tx_heartbeat_errors++;
1451 if (status & ENTSR_OWC)
1452 ei_local->stat.tx_window_errors++;
1454 netif_wake_queue(dev);
1458 * ei_receive - receive some packets
1459 * @dev: network device with which receive will be run
1461 * We have a good packet(s), get it/them out of the buffers.
1462 * Called with lock held.
1465 static void ei_receive(struct net_device *dev)
1467 long e8390_base = dev->base_addr;
1468 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1469 unsigned char rxing_page, this_frame, next_frame;
1470 unsigned short current_offset;
1471 int rx_pkt_count = 0;
1472 struct e8390_pkt_hdr rx_frame;
1474 while (++rx_pkt_count < 10)
1476 int pkt_len, pkt_stat;
1478 /* Get the rx page (incoming packet pointer). */
1479 rxing_page = inb_p(e8390_base + EN1_CURPAG -1);
1481 /* Remove one frame from the ring. Boundary is always a page behind. */
1482 this_frame = inb_p(e8390_base + EN0_BOUNDARY) + 1;
1483 if (this_frame >= ei_local->stop_page)
1484 this_frame = ei_local->rx_start_page;
1486 /* Someday we'll omit the previous, iff we never get this message.
1487 (There is at least one clone claimed to have a problem.)
1489 Keep quiet if it looks like a card removal. One problem here
1490 is that some clones crash in roughly the same way.
1492 if (ei_debug > 0 && this_frame != ei_local->current_page && (this_frame!=0x0 || rxing_page!=0xFF))
1493 printk(KERN_ERR "%s: mismatched read page pointers %2x vs %2x.\n",
1494 dev->name, this_frame, ei_local->current_page);
1496 if (this_frame == rxing_page) /* Read all the frames? */
1497 break; /* Done for now */
1499 current_offset = this_frame << 8;
1500 ei_get_8390_hdr(dev, &rx_frame, this_frame);
1502 pkt_len = rx_frame.count - sizeof(struct e8390_pkt_hdr);
1503 pkt_stat = rx_frame.status;
1505 next_frame = this_frame + 1 + ((pkt_len+4)>>8);
1507 if (pkt_len < 60 || pkt_len > 1518)
1510 printk(KERN_DEBUG "%s: bogus packet size: %d, status=%#2x nxpg=%#2x.\n",
1511 dev->name, rx_frame.count, rx_frame.status,
1513 ei_local->stat.rx_errors++;
1514 ei_local->stat.rx_length_errors++;
1516 else if ((pkt_stat & 0x0F) == ENRSR_RXOK)
1518 struct sk_buff *skb;
1520 skb = dev_alloc_skb(pkt_len+2);
1524 printk(KERN_DEBUG "%s: Couldn't allocate a sk_buff of size %d.\n",
1525 dev->name, pkt_len);
1526 ei_local->stat.rx_dropped++;
1531 skb_reserve(skb,2); /* IP headers on 16 byte boundaries */
1533 skb_put(skb, pkt_len); /* Make room */
1534 ei_block_input(dev, pkt_len, skb, current_offset + sizeof(rx_frame));
1535 skb->protocol=eth_type_trans(skb,dev);
1537 dev->last_rx = jiffies;
1538 ei_local->stat.rx_packets++;
1539 ei_local->stat.rx_bytes += pkt_len;
1540 if (pkt_stat & ENRSR_PHY)
1541 ei_local->stat.multicast++;
1547 printk(KERN_DEBUG "%s: bogus packet: status=%#2x nxpg=%#2x size=%d\n",
1548 dev->name, rx_frame.status, rx_frame.next,
1550 ei_local->stat.rx_errors++;
1551 /* NB: The NIC counts CRC, frame and missed errors. */
1552 if (pkt_stat & ENRSR_FO)
1553 ei_local->stat.rx_fifo_errors++;
1555 next_frame = rx_frame.next;
1557 /* This _should_ never happen: it's here for avoiding bad clones. */
1558 if (next_frame >= ei_local->stop_page) {
1559 printk("%s: next frame inconsistency, %#2x\n", dev->name,
1561 next_frame = ei_local->rx_start_page;
1563 ei_local->current_page = next_frame;
1564 outb_p(next_frame-1, e8390_base+EN0_BOUNDARY);
1571 * ei_rx_overrun - handle receiver overrun
1572 * @dev: network device which threw exception
1574 * We have a receiver overrun: we have to kick the 8390 to get it started
1575 * again. Problem is that you have to kick it exactly as NS prescribes in
1576 * the updated datasheets, or "the NIC may act in an unpredictable manner."
1577 * This includes causing "the NIC to defer indefinitely when it is stopped
1578 * on a busy network." Ugh.
1579 * Called with lock held. Don't call this with the interrupts off or your
1580 * computer will hate you - it takes 10ms or so.
1583 static void ei_rx_overrun(struct net_device *dev)
1585 axnet_dev_t *info = (axnet_dev_t *)dev;
1586 long e8390_base = dev->base_addr;
1587 unsigned char was_txing, must_resend = 0;
1588 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1591 * Record whether a Tx was in progress and then issue the
1594 was_txing = inb_p(e8390_base+E8390_CMD) & E8390_TRANS;
1595 outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD);
1598 printk(KERN_DEBUG "%s: Receiver overrun.\n", dev->name);
1599 ei_local->stat.rx_over_errors++;
1602 * Wait a full Tx time (1.2ms) + some guard time, NS says 1.6ms total.
1603 * Early datasheets said to poll the reset bit, but now they say that
1604 * it "is not a reliable indicator and subsequently should be ignored."
1605 * We wait at least 10ms.
1611 * Reset RBCR[01] back to zero as per magic incantation.
1613 outb_p(0x00, e8390_base+EN0_RCNTLO);
1614 outb_p(0x00, e8390_base+EN0_RCNTHI);
1617 * See if any Tx was interrupted or not. According to NS, this
1618 * step is vital, and skipping it will cause no end of havoc.
1623 unsigned char tx_completed = inb_p(e8390_base+EN0_ISR) & (ENISR_TX+ENISR_TX_ERR);
1629 * Have to enter loopback mode and then restart the NIC before
1630 * you are allowed to slurp packets up off the ring.
1632 outb_p(E8390_TXOFF, e8390_base + EN0_TXCR);
1633 outb_p(E8390_NODMA + E8390_PAGE0 + E8390_START, e8390_base + E8390_CMD);
1636 * Clear the Rx ring of all the debris, and ack the interrupt.
1641 * Leave loopback mode, and resend any packet that got stopped.
1643 outb_p(E8390_TXCONFIG | info->duplex_flag, e8390_base + EN0_TXCR);
1645 outb_p(E8390_NODMA + E8390_PAGE0 + E8390_START + E8390_TRANS, e8390_base + E8390_CMD);
1649 * Collect the stats. This is called unlocked and from several contexts.
1652 static struct net_device_stats *get_stats(struct net_device *dev)
1654 long ioaddr = dev->base_addr;
1655 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1656 unsigned long flags;
1658 /* If the card is stopped, just return the present stats. */
1659 if (!netif_running(dev))
1660 return &ei_local->stat;
1662 spin_lock_irqsave(&ei_local->page_lock,flags);
1663 /* Read the counter registers, assuming we are in page 0. */
1664 ei_local->stat.rx_frame_errors += inb_p(ioaddr + EN0_COUNTER0);
1665 ei_local->stat.rx_crc_errors += inb_p(ioaddr + EN0_COUNTER1);
1666 ei_local->stat.rx_missed_errors+= inb_p(ioaddr + EN0_COUNTER2);
1667 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1669 return &ei_local->stat;
1673 * Form the 64 bit 8390 multicast table from the linked list of addresses
1674 * associated with this dev structure.
1677 static inline void make_mc_bits(u8 *bits, struct net_device *dev)
1679 struct dev_mc_list *dmi;
1682 for (dmi=dev->mc_list; dmi; dmi=dmi->next) {
1684 crc = ether_crc(ETH_ALEN, dmi->dmi_addr);
1686 * The 8390 uses the 6 most significant bits of the
1687 * CRC to index the multicast table.
1689 bits[crc>>29] |= (1<<((crc>>26)&7));
1694 * do_set_multicast_list - set/clear multicast filter
1695 * @dev: net device for which multicast filter is adjusted
1697 * Set or clear the multicast filter for this adaptor.
1698 * Must be called with lock held.
1701 static void do_set_multicast_list(struct net_device *dev)
1703 long e8390_base = dev->base_addr;
1705 struct ei_device *ei_local = (struct ei_device*)netdev_priv(dev);
1707 if (!(dev->flags&(IFF_PROMISC|IFF_ALLMULTI))) {
1708 memset(ei_local->mcfilter, 0, 8);
1710 make_mc_bits(ei_local->mcfilter, dev);
1712 /* set to accept-all */
1713 memset(ei_local->mcfilter, 0xFF, 8);
1717 * DP8390 manuals don't specify any magic sequence for altering
1718 * the multicast regs on an already running card. To be safe, we
1719 * ensure multicast mode is off prior to loading up the new hash
1720 * table. If this proves to be not enough, we can always resort
1721 * to stopping the NIC, loading the table and then restarting.
1724 if (netif_running(dev))
1725 outb_p(E8390_RXCONFIG, e8390_base + EN0_RXCR);
1727 outb_p(E8390_NODMA + E8390_PAGE1, e8390_base + E8390_CMD);
1728 for(i = 0; i < 8; i++)
1730 outb_p(ei_local->mcfilter[i], e8390_base + EN1_MULT_SHIFT(i));
1732 outb_p(E8390_NODMA + E8390_PAGE0, e8390_base + E8390_CMD);
1734 if(dev->flags&IFF_PROMISC)
1735 outb_p(E8390_RXCONFIG | 0x58, e8390_base + EN0_RXCR);
1736 else if(dev->flags&IFF_ALLMULTI || dev->mc_list)
1737 outb_p(E8390_RXCONFIG | 0x48, e8390_base + EN0_RXCR);
1739 outb_p(E8390_RXCONFIG | 0x40, e8390_base + EN0_RXCR);
1743 * Called without lock held. This is invoked from user context and may
1744 * be parallel to just about everything else. Its also fairly quick and
1745 * not called too often. Must protect against both bh and irq users
1748 static void set_multicast_list(struct net_device *dev)
1750 unsigned long flags;
1752 spin_lock_irqsave(&dev_lock(dev), flags);
1753 do_set_multicast_list(dev);
1754 spin_unlock_irqrestore(&dev_lock(dev), flags);
1758 * axdev_setup - init rest of 8390 device struct
1759 * @dev: network device structure to init
1761 * Initialize the rest of the 8390 device structure. Do NOT __init
1762 * this, as it is used by 8390 based modular drivers too.
1765 static void axdev_setup(struct net_device *dev)
1767 struct ei_device *ei_local;
1769 printk(version_8390);
1771 SET_MODULE_OWNER(dev);
1774 ei_local = (struct ei_device *)netdev_priv(dev);
1775 spin_lock_init(&ei_local->page_lock);
1777 dev->hard_start_xmit = &ei_start_xmit;
1778 dev->get_stats = get_stats;
1779 dev->set_multicast_list = &set_multicast_list;
1784 /* This page of functions should be 8390 generic */
1785 /* Follow National Semi's recommendations for initializing the "NIC". */
1788 * AX88190_init - initialize 8390 hardware
1789 * @dev: network device to initialize
1790 * @startp: boolean. non-zero value to initiate chip processing
1792 * Must be called with lock held.
1795 static void AX88190_init(struct net_device *dev, int startp)
1797 axnet_dev_t *info = PRIV(dev);
1798 long e8390_base = dev->base_addr;
1799 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1801 int endcfg = ei_local->word16 ? (0x48 | ENDCFG_WTS) : 0x48;
1803 if(sizeof(struct e8390_pkt_hdr)!=4)
1804 panic("8390.c: header struct mispacked\n");
1805 /* Follow National Semi's recommendations for initing the DP83902. */
1806 outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD); /* 0x21 */
1807 outb_p(endcfg, e8390_base + EN0_DCFG); /* 0x48 or 0x49 */
1808 /* Clear the remote byte count registers. */
1809 outb_p(0x00, e8390_base + EN0_RCNTLO);
1810 outb_p(0x00, e8390_base + EN0_RCNTHI);
1811 /* Set to monitor and loopback mode -- this is vital!. */
1812 outb_p(E8390_RXOFF|0x40, e8390_base + EN0_RXCR); /* 0x60 */
1813 outb_p(E8390_TXOFF, e8390_base + EN0_TXCR); /* 0x02 */
1814 /* Set the transmit page and receive ring. */
1815 outb_p(ei_local->tx_start_page, e8390_base + EN0_TPSR);
1816 ei_local->tx1 = ei_local->tx2 = 0;
1817 outb_p(ei_local->rx_start_page, e8390_base + EN0_STARTPG);
1818 outb_p(ei_local->stop_page-1, e8390_base + EN0_BOUNDARY); /* 3c503 says 0x3f,NS0x26*/
1819 ei_local->current_page = ei_local->rx_start_page; /* assert boundary+1 */
1820 outb_p(ei_local->stop_page, e8390_base + EN0_STOPPG);
1821 /* Clear the pending interrupts and mask. */
1822 outb_p(0xFF, e8390_base + EN0_ISR);
1823 outb_p(0x00, e8390_base + EN0_IMR);
1825 /* Copy the station address into the DS8390 registers. */
1827 outb_p(E8390_NODMA + E8390_PAGE1 + E8390_STOP, e8390_base+E8390_CMD); /* 0x61 */
1828 for(i = 0; i < 6; i++)
1830 outb_p(dev->dev_addr[i], e8390_base + EN1_PHYS_SHIFT(i));
1831 if(inb_p(e8390_base + EN1_PHYS_SHIFT(i))!=dev->dev_addr[i])
1832 printk(KERN_ERR "Hw. address read/write mismap %d\n",i);
1835 outb_p(ei_local->rx_start_page, e8390_base + EN1_CURPAG);
1836 outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD);
1838 netif_start_queue(dev);
1839 ei_local->tx1 = ei_local->tx2 = 0;
1840 ei_local->txing = 0;
1844 outb_p(0xff, e8390_base + EN0_ISR);
1845 outb_p(ENISR_ALL, e8390_base + EN0_IMR);
1846 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, e8390_base+E8390_CMD);
1847 outb_p(E8390_TXCONFIG | info->duplex_flag,
1848 e8390_base + EN0_TXCR); /* xmit on. */
1849 /* 3c503 TechMan says rxconfig only after the NIC is started. */
1850 outb_p(E8390_RXCONFIG | 0x40, e8390_base + EN0_RXCR); /* rx on, */
1851 do_set_multicast_list(dev); /* (re)load the mcast table */
1855 /* Trigger a transmit start, assuming the length is valid.
1856 Always called with the page lock held */
1858 static void NS8390_trigger_send(struct net_device *dev, unsigned int length,
1861 long e8390_base = dev->base_addr;
1862 struct ei_device *ei_local __attribute((unused)) = (struct ei_device *) netdev_priv(dev);
1864 if (inb_p(e8390_base) & E8390_TRANS)
1866 printk(KERN_WARNING "%s: trigger_send() called with the transmitter busy.\n",
1870 outb_p(length & 0xff, e8390_base + EN0_TCNTLO);
1871 outb_p(length >> 8, e8390_base + EN0_TCNTHI);
1872 outb_p(start_page, e8390_base + EN0_TPSR);
1873 outb_p(E8390_NODMA+E8390_TRANS+E8390_START, e8390_base+E8390_CMD);