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;
306 DEBUG(0, "axnet_config(0x%p)\n", link);
308 tuple.Attributes = 0;
309 tuple.TupleData = (cisdata_t *)buf;
310 tuple.TupleDataMax = sizeof(buf);
311 tuple.TupleOffset = 0;
312 tuple.DesiredTuple = CISTPL_CONFIG;
313 CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
314 CS_CHECK(GetTupleData, pcmcia_get_tuple_data(handle, &tuple));
315 CS_CHECK(ParseTuple, pcmcia_parse_tuple(handle, &tuple, &parse));
316 link->conf.ConfigBase = parse.config.base;
317 /* don't trust the CIS on this; Linksys got it wrong */
318 link->conf.Present = 0x63;
321 link->state |= DEV_CONFIG;
323 tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
324 tuple.Attributes = 0;
325 CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
326 while (last_ret == CS_SUCCESS) {
327 cistpl_cftable_entry_t *cfg = &(parse.cftable_entry);
328 cistpl_io_t *io = &(parse.cftable_entry.io);
330 if (pcmcia_get_tuple_data(handle, &tuple) != 0 ||
331 pcmcia_parse_tuple(handle, &tuple, &parse) != 0 ||
332 cfg->index == 0 || cfg->io.nwin == 0)
335 link->conf.ConfigIndex = 0x05;
336 /* For multifunction cards, by convention, we configure the
337 network function with window 0, and serial with window 1 */
339 i = (io->win[1].len > io->win[0].len);
340 link->io.BasePort2 = io->win[1-i].base;
341 link->io.NumPorts2 = io->win[1-i].len;
343 i = link->io.NumPorts2 = 0;
345 link->io.BasePort1 = io->win[i].base;
346 link->io.NumPorts1 = io->win[i].len;
347 link->io.IOAddrLines = io->flags & CISTPL_IO_LINES_MASK;
348 if (link->io.NumPorts1 + link->io.NumPorts2 >= 32) {
349 last_ret = try_io_port(link);
350 if (last_ret == CS_SUCCESS) break;
353 last_ret = pcmcia_get_next_tuple(handle, &tuple);
355 if (last_ret != CS_SUCCESS) {
356 cs_error(handle, RequestIO, last_ret);
360 CS_CHECK(RequestIRQ, pcmcia_request_irq(handle, &link->irq));
362 if (link->io.NumPorts2 == 8) {
363 link->conf.Attributes |= CONF_ENABLE_SPKR;
364 link->conf.Status = CCSR_AUDIO_ENA;
367 CS_CHECK(RequestConfiguration, pcmcia_request_configuration(handle, &link->conf));
368 dev->irq = link->irq.AssignedIRQ;
369 dev->base_addr = link->io.BasePort1;
371 if (!get_prom(link)) {
372 printk(KERN_NOTICE "axnet_cs: this is not an AX88190 card!\n");
373 printk(KERN_NOTICE "axnet_cs: use pcnet_cs instead.\n");
377 ei_status.name = "AX88190";
378 ei_status.word16 = 1;
379 ei_status.tx_start_page = AXNET_START_PG;
380 ei_status.rx_start_page = AXNET_START_PG + TX_PAGES;
381 ei_status.stop_page = AXNET_STOP_PG;
382 ei_status.reset_8390 = &axnet_reset_8390;
383 ei_status.get_8390_hdr = &get_8390_hdr;
384 ei_status.block_input = &block_input;
385 ei_status.block_output = &block_output;
387 if (inb(dev->base_addr + AXNET_TEST) != 0)
388 info->flags |= IS_AX88790;
390 info->flags |= IS_AX88190;
392 if (info->flags & IS_AX88790)
393 outb(0x10, dev->base_addr + AXNET_GPIO); /* select Internal PHY */
395 for (i = 0; i < 32; i++) {
396 j = mdio_read(dev->base_addr + AXNET_MII_EEP, i, 1);
397 if ((j != 0) && (j != 0xffff)) break;
400 /* Maybe PHY is in power down mode. (PPD_SET = 1)
401 Bit 2 of CCSR is active low. */
403 conf_reg_t reg = { 0, CS_WRITE, CISREG_CCSR, 0x04 };
404 pcmcia_access_configuration_register(link->handle, ®);
405 for (i = 0; i < 32; i++) {
406 j = mdio_read(dev->base_addr + AXNET_MII_EEP, i, 1);
407 if ((j != 0) && (j != 0xffff)) break;
411 info->phy_id = (i < 32) ? i : -1;
412 link->dev = &info->node;
413 link->state &= ~DEV_CONFIG_PENDING;
414 SET_NETDEV_DEV(dev, &handle_to_dev(handle));
416 if (register_netdev(dev) != 0) {
417 printk(KERN_NOTICE "axnet_cs: register_netdev() failed\n");
422 strcpy(info->node.dev_name, dev->name);
424 printk(KERN_INFO "%s: Asix AX88%d90: io %#3lx, irq %d, hw_addr ",
425 dev->name, ((info->flags & IS_AX88790) ? 7 : 1),
426 dev->base_addr, dev->irq);
427 for (i = 0; i < 6; i++)
428 printk("%02X%s", dev->dev_addr[i], ((i<5) ? ":" : "\n"));
429 if (info->phy_id != -1) {
430 DEBUG(0, " MII transceiver at index %d, status %x.\n", info->phy_id, j);
432 printk(KERN_NOTICE " No MII transceivers found!\n");
437 cs_error(link->handle, last_fn, last_ret);
440 link->state &= ~DEV_CONFIG_PENDING;
444 /*======================================================================
446 After a card is removed, axnet_release() will unregister the net
447 device, and release the PCMCIA configuration. If the device is
448 still open, this will be postponed until it is closed.
450 ======================================================================*/
452 static void axnet_release(dev_link_t *link)
454 pcmcia_disable_device(link->handle);
457 static int axnet_suspend(struct pcmcia_device *p_dev)
459 dev_link_t *link = dev_to_instance(p_dev);
460 struct net_device *dev = link->priv;
462 if ((link->state & DEV_CONFIG) && (link->open))
463 netif_device_detach(dev);
468 static int axnet_resume(struct pcmcia_device *p_dev)
470 dev_link_t *link = dev_to_instance(p_dev);
471 struct net_device *dev = link->priv;
473 if ((link->state & DEV_CONFIG) && (link->open)) {
474 axnet_reset_8390(dev);
475 AX88190_init(dev, 1);
476 netif_device_attach(dev);
483 /*======================================================================
485 MII interface support
487 ======================================================================*/
489 #define MDIO_SHIFT_CLK 0x01
490 #define MDIO_DATA_WRITE0 0x00
491 #define MDIO_DATA_WRITE1 0x08
492 #define MDIO_DATA_READ 0x04
493 #define MDIO_MASK 0x0f
494 #define MDIO_ENB_IN 0x02
496 static void mdio_sync(kio_addr_t addr)
499 for (bits = 0; bits < 32; bits++) {
500 outb_p(MDIO_DATA_WRITE1, addr);
501 outb_p(MDIO_DATA_WRITE1 | MDIO_SHIFT_CLK, addr);
505 static int mdio_read(kio_addr_t addr, int phy_id, int loc)
507 u_int cmd = (0xf6<<10)|(phy_id<<5)|loc;
511 for (i = 14; i >= 0; i--) {
512 int dat = (cmd&(1<<i)) ? MDIO_DATA_WRITE1 : MDIO_DATA_WRITE0;
514 outb_p(dat | MDIO_SHIFT_CLK, addr);
516 for (i = 19; i > 0; i--) {
517 outb_p(MDIO_ENB_IN, addr);
518 retval = (retval << 1) | ((inb_p(addr) & MDIO_DATA_READ) != 0);
519 outb_p(MDIO_ENB_IN | MDIO_SHIFT_CLK, addr);
521 return (retval>>1) & 0xffff;
524 static void mdio_write(kio_addr_t addr, int phy_id, int loc, int value)
526 u_int cmd = (0x05<<28)|(phy_id<<23)|(loc<<18)|(1<<17)|value;
530 for (i = 31; i >= 0; i--) {
531 int dat = (cmd&(1<<i)) ? MDIO_DATA_WRITE1 : MDIO_DATA_WRITE0;
533 outb_p(dat | MDIO_SHIFT_CLK, addr);
535 for (i = 1; i >= 0; i--) {
536 outb_p(MDIO_ENB_IN, addr);
537 outb_p(MDIO_ENB_IN | MDIO_SHIFT_CLK, addr);
541 /*====================================================================*/
543 static int axnet_open(struct net_device *dev)
545 axnet_dev_t *info = PRIV(dev);
546 dev_link_t *link = &info->link;
548 DEBUG(2, "axnet_open('%s')\n", dev->name);
555 request_irq(dev->irq, ei_irq_wrapper, SA_SHIRQ, "axnet_cs", dev);
557 info->link_status = 0x00;
558 init_timer(&info->watchdog);
559 info->watchdog.function = &ei_watchdog;
560 info->watchdog.data = (u_long)dev;
561 info->watchdog.expires = jiffies + HZ;
562 add_timer(&info->watchdog);
567 /*====================================================================*/
569 static int axnet_close(struct net_device *dev)
571 axnet_dev_t *info = PRIV(dev);
572 dev_link_t *link = &info->link;
574 DEBUG(2, "axnet_close('%s')\n", dev->name);
577 free_irq(dev->irq, dev);
580 netif_stop_queue(dev);
581 del_timer_sync(&info->watchdog);
586 /*======================================================================
588 Hard reset the card. This used to pause for the same period that
589 a 8390 reset command required, but that shouldn't be necessary.
591 ======================================================================*/
593 static void axnet_reset_8390(struct net_device *dev)
595 kio_addr_t nic_base = dev->base_addr;
598 ei_status.txing = ei_status.dmaing = 0;
600 outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, nic_base + E8390_CMD);
602 outb(inb(nic_base + AXNET_RESET), nic_base + AXNET_RESET);
604 for (i = 0; i < 100; i++) {
605 if ((inb_p(nic_base+EN0_ISR) & ENISR_RESET) != 0)
609 outb_p(ENISR_RESET, nic_base + EN0_ISR); /* Ack intr. */
612 printk(KERN_ERR "%s: axnet_reset_8390() did not complete.\n",
615 } /* axnet_reset_8390 */
617 /*====================================================================*/
619 static irqreturn_t ei_irq_wrapper(int irq, void *dev_id, struct pt_regs *regs)
621 struct net_device *dev = dev_id;
622 PRIV(dev)->stale = 0;
623 return ax_interrupt(irq, dev_id, regs);
626 static void ei_watchdog(u_long arg)
628 struct net_device *dev = (struct net_device *)(arg);
629 axnet_dev_t *info = PRIV(dev);
630 kio_addr_t nic_base = dev->base_addr;
631 kio_addr_t mii_addr = nic_base + AXNET_MII_EEP;
634 if (!netif_device_present(dev)) goto reschedule;
636 /* Check for pending interrupt with expired latency timer: with
637 this, we can limp along even if the interrupt is blocked */
638 if (info->stale++ && (inb_p(nic_base + EN0_ISR) & ENISR_ALL)) {
639 if (!info->fast_poll)
640 printk(KERN_INFO "%s: interrupt(s) dropped!\n", dev->name);
641 ei_irq_wrapper(dev->irq, dev, NULL);
642 info->fast_poll = HZ;
644 if (info->fast_poll) {
646 info->watchdog.expires = jiffies + 1;
647 add_timer(&info->watchdog);
651 if (info->phy_id < 0)
653 link = mdio_read(mii_addr, info->phy_id, 1);
654 if (!link || (link == 0xffff)) {
655 printk(KERN_INFO "%s: MII is missing!\n", dev->name);
661 if (link != info->link_status) {
662 u_short p = mdio_read(mii_addr, info->phy_id, 5);
663 printk(KERN_INFO "%s: %s link beat\n", dev->name,
664 (link) ? "found" : "lost");
666 info->duplex_flag = (p & 0x0140) ? 0x80 : 0x00;
668 printk(KERN_INFO "%s: autonegotiation complete: "
669 "%sbaseT-%cD selected\n", dev->name,
670 ((p & 0x0180) ? "100" : "10"),
671 ((p & 0x0140) ? 'F' : 'H'));
673 printk(KERN_INFO "%s: link partner did not autonegotiate\n",
675 AX88190_init(dev, 1);
677 info->link_status = link;
681 info->watchdog.expires = jiffies + HZ;
682 add_timer(&info->watchdog);
685 static void netdev_get_drvinfo(struct net_device *dev,
686 struct ethtool_drvinfo *info)
688 strcpy(info->driver, "axnet_cs");
691 static struct ethtool_ops netdev_ethtool_ops = {
692 .get_drvinfo = netdev_get_drvinfo,
695 /*====================================================================*/
697 static int axnet_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
699 axnet_dev_t *info = PRIV(dev);
700 u16 *data = (u16 *)&rq->ifr_ifru;
701 kio_addr_t mii_addr = dev->base_addr + AXNET_MII_EEP;
704 data[0] = info->phy_id;
705 case SIOCGMIIREG: /* Read MII PHY register. */
706 data[3] = mdio_read(mii_addr, data[0], data[1] & 0x1f);
708 case SIOCSMIIREG: /* Write MII PHY register. */
709 if (!capable(CAP_NET_ADMIN))
711 mdio_write(mii_addr, data[0], data[1] & 0x1f, data[2]);
717 /*====================================================================*/
719 static void get_8390_hdr(struct net_device *dev,
720 struct e8390_pkt_hdr *hdr,
723 kio_addr_t nic_base = dev->base_addr;
725 outb_p(0, nic_base + EN0_RSARLO); /* On page boundary */
726 outb_p(ring_page, nic_base + EN0_RSARHI);
727 outb_p(E8390_RREAD+E8390_START, nic_base + AXNET_CMD);
729 insw(nic_base + AXNET_DATAPORT, hdr,
730 sizeof(struct e8390_pkt_hdr)>>1);
731 /* Fix for big endian systems */
732 hdr->count = le16_to_cpu(hdr->count);
736 /*====================================================================*/
738 static void block_input(struct net_device *dev, int count,
739 struct sk_buff *skb, int ring_offset)
741 kio_addr_t nic_base = dev->base_addr;
742 int xfer_count = count;
743 char *buf = skb->data;
746 if ((ei_debug > 4) && (count != 4))
747 printk(KERN_DEBUG "%s: [bi=%d]\n", dev->name, count+4);
749 outb_p(ring_offset & 0xff, nic_base + EN0_RSARLO);
750 outb_p(ring_offset >> 8, nic_base + EN0_RSARHI);
751 outb_p(E8390_RREAD+E8390_START, nic_base + AXNET_CMD);
753 insw(nic_base + AXNET_DATAPORT,buf,count>>1);
755 buf[count-1] = inb(nic_base + AXNET_DATAPORT), xfer_count++;
759 /*====================================================================*/
761 static void block_output(struct net_device *dev, int count,
762 const u_char *buf, const int start_page)
764 kio_addr_t nic_base = dev->base_addr;
768 printk(KERN_DEBUG "%s: [bo=%d]\n", dev->name, count);
771 /* Round the count up for word writes. Do we need to do this?
772 What effect will an odd byte count have on the 8390?
773 I should check someday. */
777 outb_p(0x00, nic_base + EN0_RSARLO);
778 outb_p(start_page, nic_base + EN0_RSARHI);
779 outb_p(E8390_RWRITE+E8390_START, nic_base + AXNET_CMD);
780 outsw(nic_base + AXNET_DATAPORT, buf, count>>1);
783 static struct pcmcia_device_id axnet_ids[] = {
784 PCMCIA_PFC_DEVICE_MANF_CARD(0, 0x016c, 0x0081),
785 PCMCIA_DEVICE_MANF_CARD(0x018a, 0x0301),
786 PCMCIA_DEVICE_MANF_CARD(0x026f, 0x0301),
787 PCMCIA_DEVICE_MANF_CARD(0x026f, 0x0303),
788 PCMCIA_DEVICE_MANF_CARD(0x026f, 0x0309),
789 PCMCIA_DEVICE_MANF_CARD(0x0274, 0x1106),
790 PCMCIA_DEVICE_MANF_CARD(0x8a01, 0xc1ab),
791 PCMCIA_DEVICE_PROD_ID12("AmbiCom,Inc.", "Fast Ethernet PC Card(AMB8110)", 0x49b020a7, 0x119cc9fc),
792 PCMCIA_DEVICE_PROD_ID124("Fast Ethernet", "16-bit PC Card", "AX88190", 0xb4be14e3, 0x9a12eb6a, 0xab9be5ef),
793 PCMCIA_DEVICE_PROD_ID12("ASIX", "AX88190", 0x0959823b, 0xab9be5ef),
794 PCMCIA_DEVICE_PROD_ID12("Billionton", "LNA-100B", 0x552ab682, 0xbc3b87e1),
795 PCMCIA_DEVICE_PROD_ID12("CHEETAH ETHERCARD", "EN2228", 0x00fa7bc8, 0x00e990cc),
796 PCMCIA_DEVICE_PROD_ID12("CNet", "CNF301", 0xbc477dde, 0x78c5f40b),
797 PCMCIA_DEVICE_PROD_ID12("corega K.K.", "corega FEther PCC-TXD", 0x5261440f, 0x436768c5),
798 PCMCIA_DEVICE_PROD_ID12("corega K.K.", "corega FEtherII PCC-TXD", 0x5261440f, 0x730df72e),
799 PCMCIA_DEVICE_PROD_ID12("Dynalink", "L100C16", 0x55632fd5, 0x66bc2a90),
800 PCMCIA_DEVICE_PROD_ID12("Linksys", "EtherFast 10/100 PC Card (PCMPC100 V3)", 0x0733cc81, 0x232019a8),
801 PCMCIA_DEVICE_PROD_ID12("MELCO", "LPC3-TX", 0x481e0094, 0xf91af609),
802 PCMCIA_DEVICE_PROD_ID12("PCMCIA", "100BASE", 0x281f1c5d, 0x7c2add04),
803 PCMCIA_DEVICE_PROD_ID12("PCMCIA", "FastEtherCard", 0x281f1c5d, 0x7ef26116),
804 PCMCIA_DEVICE_PROD_ID12("PCMCIA", "FEP501", 0x281f1c5d, 0x2e272058),
805 PCMCIA_DEVICE_PROD_ID14("Network Everywhere", "AX88190", 0x820a67b6, 0xab9be5ef),
806 /* this is not specific enough */
807 /* PCMCIA_DEVICE_MANF_CARD(0x021b, 0x0202), */
810 MODULE_DEVICE_TABLE(pcmcia, axnet_ids);
812 static struct pcmcia_driver axnet_cs_driver = {
813 .owner = THIS_MODULE,
817 .probe = axnet_attach,
818 .remove = axnet_detach,
819 .id_table = axnet_ids,
820 .suspend = axnet_suspend,
821 .resume = axnet_resume,
824 static int __init init_axnet_cs(void)
826 return pcmcia_register_driver(&axnet_cs_driver);
829 static void __exit exit_axnet_cs(void)
831 pcmcia_unregister_driver(&axnet_cs_driver);
834 module_init(init_axnet_cs);
835 module_exit(exit_axnet_cs);
837 /*====================================================================*/
839 /* 8390.c: A general NS8390 ethernet driver core for linux. */
841 Written 1992-94 by Donald Becker.
843 Copyright 1993 United States Government as represented by the
844 Director, National Security Agency.
846 This software may be used and distributed according to the terms
847 of the GNU General Public License, incorporated herein by reference.
849 The author may be reached as becker@scyld.com, or C/O
850 Scyld Computing Corporation
851 410 Severn Ave., Suite 210
854 This is the chip-specific code for many 8390-based ethernet adaptors.
855 This is not a complete driver, it must be combined with board-specific
856 code such as ne.c, wd.c, 3c503.c, etc.
858 Seeing how at least eight drivers use this code, (not counting the
859 PCMCIA ones either) it is easy to break some card by what seems like
860 a simple innocent change. Please contact me or Donald if you think
861 you have found something that needs changing. -- PG
865 Paul Gortmaker : remove set_bit lock, other cleanups.
866 Paul Gortmaker : add ei_get_8390_hdr() so we can pass skb's to
867 ei_block_input() for eth_io_copy_and_sum().
868 Paul Gortmaker : exchange static int ei_pingpong for a #define,
869 also add better Tx error handling.
870 Paul Gortmaker : rewrite Rx overrun handling as per NS specs.
871 Alexey Kuznetsov : use the 8390's six bit hash multicast filter.
872 Paul Gortmaker : tweak ANK's above multicast changes a bit.
873 Paul Gortmaker : update packet statistics for v2.1.x
874 Alan Cox : support arbitary stupid port mappings on the
875 68K Macintosh. Support >16bit I/O spaces
876 Paul Gortmaker : add kmod support for auto-loading of the 8390
877 module by all drivers that require it.
878 Alan Cox : Spinlocking work, added 'BUG_83C690'
879 Paul Gortmaker : Separate out Tx timeout code from Tx path.
882 The National Semiconductor LAN Databook, and the 3Com 3c503 databook.
886 static const char *version_8390 =
887 "8390.c:v1.10cvs 9/23/94 Donald Becker (becker@scyld.com)\n";
889 #include <linux/bitops.h>
891 #include <linux/fcntl.h>
892 #include <linux/in.h>
893 #include <linux/interrupt.h>
895 #include <linux/etherdevice.h>
899 /* These are the operational function interfaces to board-specific
901 void reset_8390(struct net_device *dev)
902 Resets the board associated with DEV, including a hardware reset of
903 the 8390. This is only called when there is a transmit timeout, and
904 it is always followed by 8390_init().
905 void block_output(struct net_device *dev, int count, const unsigned char *buf,
907 Write the COUNT bytes of BUF to the packet buffer at START_PAGE. The
908 "page" value uses the 8390's 256-byte pages.
909 void get_8390_hdr(struct net_device *dev, struct e8390_hdr *hdr, int ring_page)
910 Read the 4 byte, page aligned 8390 header. *If* there is a
911 subsequent read, it will be of the rest of the packet.
912 void block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset)
913 Read COUNT bytes from the packet buffer into the skb data area. Start
914 reading from RING_OFFSET, the address as the 8390 sees it. This will always
915 follow the read of the 8390 header.
917 #define ei_reset_8390 (ei_local->reset_8390)
918 #define ei_block_output (ei_local->block_output)
919 #define ei_block_input (ei_local->block_input)
920 #define ei_get_8390_hdr (ei_local->get_8390_hdr)
922 /* use 0 for production, 1 for verification, >2 for debug */
927 /* Index to functions. */
928 static void ei_tx_intr(struct net_device *dev);
929 static void ei_tx_err(struct net_device *dev);
930 static void ei_tx_timeout(struct net_device *dev);
931 static void ei_receive(struct net_device *dev);
932 static void ei_rx_overrun(struct net_device *dev);
934 /* Routines generic to NS8390-based boards. */
935 static void NS8390_trigger_send(struct net_device *dev, unsigned int length,
937 static void set_multicast_list(struct net_device *dev);
938 static void do_set_multicast_list(struct net_device *dev);
941 * SMP and the 8390 setup.
943 * The 8390 isnt exactly designed to be multithreaded on RX/TX. There is
944 * a page register that controls bank and packet buffer access. We guard
945 * this with ei_local->page_lock. Nobody should assume or set the page other
946 * than zero when the lock is not held. Lock holders must restore page 0
947 * before unlocking. Even pure readers must take the lock to protect in
950 * To make life difficult the chip can also be very slow. We therefore can't
951 * just use spinlocks. For the longer lockups we disable the irq the device
952 * sits on and hold the lock. We must hold the lock because there is a dual
953 * processor case other than interrupts (get stats/set multicast list in
954 * parallel with each other and transmit).
956 * Note: in theory we can just disable the irq on the card _but_ there is
957 * a latency on SMP irq delivery. So we can easily go "disable irq" "sync irqs"
958 * enter lock, take the queued irq. So we waddle instead of flying.
960 * Finally by special arrangement for the purpose of being generally
961 * annoying the transmit function is called bh atomic. That places
962 * restrictions on the user context callers as disable_irq won't save
967 * ax_open - Open/initialize the board.
968 * @dev: network device to initialize
970 * This routine goes all-out, setting everything
971 * up anew at each open, even though many of these registers should only
972 * need to be set once at boot.
974 static int ax_open(struct net_device *dev)
977 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
979 #ifdef HAVE_TX_TIMEOUT
980 /* The card I/O part of the driver (e.g. 3c503) can hook a Tx timeout
981 wrapper that does e.g. media check & then calls ei_tx_timeout. */
982 if (dev->tx_timeout == NULL)
983 dev->tx_timeout = ei_tx_timeout;
984 if (dev->watchdog_timeo <= 0)
985 dev->watchdog_timeo = TX_TIMEOUT;
989 * Grab the page lock so we own the register set, then call
993 spin_lock_irqsave(&ei_local->page_lock, flags);
994 AX88190_init(dev, 1);
995 /* Set the flag before we drop the lock, That way the IRQ arrives
996 after its set and we get no silly warnings */
997 netif_start_queue(dev);
998 spin_unlock_irqrestore(&ei_local->page_lock, flags);
999 ei_local->irqlock = 0;
1003 #define dev_lock(dev) (((struct ei_device *)netdev_priv(dev))->page_lock)
1006 * ax_close - shut down network device
1007 * @dev: network device to close
1009 * Opposite of ax_open(). Only used when "ifconfig <devname> down" is done.
1011 int ax_close(struct net_device *dev)
1013 unsigned long flags;
1016 * Hold the page lock during close
1019 spin_lock_irqsave(&dev_lock(dev), flags);
1020 AX88190_init(dev, 0);
1021 spin_unlock_irqrestore(&dev_lock(dev), flags);
1022 netif_stop_queue(dev);
1027 * ei_tx_timeout - handle transmit time out condition
1028 * @dev: network device which has apparently fallen asleep
1030 * Called by kernel when device never acknowledges a transmit has
1031 * completed (or failed) - i.e. never posted a Tx related interrupt.
1034 void ei_tx_timeout(struct net_device *dev)
1036 long e8390_base = dev->base_addr;
1037 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1038 int txsr, isr, tickssofar = jiffies - dev->trans_start;
1039 unsigned long flags;
1041 ei_local->stat.tx_errors++;
1043 spin_lock_irqsave(&ei_local->page_lock, flags);
1044 txsr = inb(e8390_base+EN0_TSR);
1045 isr = inb(e8390_base+EN0_ISR);
1046 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1048 printk(KERN_DEBUG "%s: Tx timed out, %s TSR=%#2x, ISR=%#2x, t=%d.\n",
1049 dev->name, (txsr & ENTSR_ABT) ? "excess collisions." :
1050 (isr) ? "lost interrupt?" : "cable problem?", txsr, isr, tickssofar);
1052 if (!isr && !ei_local->stat.tx_packets)
1054 /* The 8390 probably hasn't gotten on the cable yet. */
1055 ei_local->interface_num ^= 1; /* Try a different xcvr. */
1058 /* Ugly but a reset can be slow, yet must be protected */
1060 disable_irq_nosync(dev->irq);
1061 spin_lock(&ei_local->page_lock);
1063 /* Try to restart the card. Perhaps the user has fixed something. */
1065 AX88190_init(dev, 1);
1067 spin_unlock(&ei_local->page_lock);
1068 enable_irq(dev->irq);
1069 netif_wake_queue(dev);
1073 * ei_start_xmit - begin packet transmission
1074 * @skb: packet to be sent
1075 * @dev: network device to which packet is sent
1077 * Sends a packet to an 8390 network device.
1080 static int ei_start_xmit(struct sk_buff *skb, struct net_device *dev)
1082 long e8390_base = dev->base_addr;
1083 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1084 int length, send_length, output_page;
1085 unsigned long flags;
1086 u8 packet[ETH_ZLEN];
1088 netif_stop_queue(dev);
1092 /* Mask interrupts from the ethercard.
1093 SMP: We have to grab the lock here otherwise the IRQ handler
1094 on another CPU can flip window and race the IRQ mask set. We end
1095 up trashing the mcast filter not disabling irqs if we don't lock */
1097 spin_lock_irqsave(&ei_local->page_lock, flags);
1098 outb_p(0x00, e8390_base + EN0_IMR);
1099 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1102 * Slow phase with lock held.
1105 disable_irq_nosync(dev->irq);
1107 spin_lock(&ei_local->page_lock);
1109 ei_local->irqlock = 1;
1111 send_length = ETH_ZLEN < length ? length : ETH_ZLEN;
1114 * We have two Tx slots available for use. Find the first free
1115 * slot, and then perform some sanity checks. With two Tx bufs,
1116 * you get very close to transmitting back-to-back packets. With
1117 * only one Tx buf, the transmitter sits idle while you reload the
1118 * card, leaving a substantial gap between each transmitted packet.
1121 if (ei_local->tx1 == 0)
1123 output_page = ei_local->tx_start_page;
1124 ei_local->tx1 = send_length;
1125 if (ei_debug && ei_local->tx2 > 0)
1126 printk(KERN_DEBUG "%s: idle transmitter tx2=%d, lasttx=%d, txing=%d.\n",
1127 dev->name, ei_local->tx2, ei_local->lasttx, ei_local->txing);
1129 else if (ei_local->tx2 == 0)
1131 output_page = ei_local->tx_start_page + TX_PAGES/2;
1132 ei_local->tx2 = send_length;
1133 if (ei_debug && ei_local->tx1 > 0)
1134 printk(KERN_DEBUG "%s: idle transmitter, tx1=%d, lasttx=%d, txing=%d.\n",
1135 dev->name, ei_local->tx1, ei_local->lasttx, ei_local->txing);
1138 { /* We should never get here. */
1140 printk(KERN_DEBUG "%s: No Tx buffers free! tx1=%d tx2=%d last=%d\n",
1141 dev->name, ei_local->tx1, ei_local->tx2, ei_local->lasttx);
1142 ei_local->irqlock = 0;
1143 netif_stop_queue(dev);
1144 outb_p(ENISR_ALL, e8390_base + EN0_IMR);
1145 spin_unlock(&ei_local->page_lock);
1146 enable_irq(dev->irq);
1147 ei_local->stat.tx_errors++;
1152 * Okay, now upload the packet and trigger a send if the transmitter
1153 * isn't already sending. If it is busy, the interrupt handler will
1154 * trigger the send later, upon receiving a Tx done interrupt.
1157 if (length == skb->len)
1158 ei_block_output(dev, length, skb->data, output_page);
1160 memset(packet, 0, ETH_ZLEN);
1161 memcpy(packet, skb->data, skb->len);
1162 ei_block_output(dev, length, packet, output_page);
1165 if (! ei_local->txing)
1167 ei_local->txing = 1;
1168 NS8390_trigger_send(dev, send_length, output_page);
1169 dev->trans_start = jiffies;
1170 if (output_page == ei_local->tx_start_page)
1173 ei_local->lasttx = -1;
1178 ei_local->lasttx = -2;
1181 else ei_local->txqueue++;
1183 if (ei_local->tx1 && ei_local->tx2)
1184 netif_stop_queue(dev);
1186 netif_start_queue(dev);
1188 /* Turn 8390 interrupts back on. */
1189 ei_local->irqlock = 0;
1190 outb_p(ENISR_ALL, e8390_base + EN0_IMR);
1192 spin_unlock(&ei_local->page_lock);
1193 enable_irq(dev->irq);
1195 dev_kfree_skb (skb);
1196 ei_local->stat.tx_bytes += send_length;
1202 * ax_interrupt - handle the interrupts from an 8390
1203 * @irq: interrupt number
1204 * @dev_id: a pointer to the net_device
1207 * Handle the ether interface interrupts. We pull packets from
1208 * the 8390 via the card specific functions and fire them at the networking
1209 * stack. We also handle transmit completions and wake the transmit path if
1210 * necessary. We also update the counters and do other housekeeping as
1214 static irqreturn_t ax_interrupt(int irq, void *dev_id, struct pt_regs * regs)
1216 struct net_device *dev = dev_id;
1218 int interrupts, nr_serviced = 0, i;
1219 struct ei_device *ei_local;
1224 printk ("net_interrupt(): irq %d for unknown device.\n", irq);
1228 e8390_base = dev->base_addr;
1229 ei_local = (struct ei_device *) netdev_priv(dev);
1232 * Protect the irq test too.
1235 spin_lock(&ei_local->page_lock);
1237 if (ei_local->irqlock)
1239 #if 1 /* This might just be an interrupt for a PCI device sharing this line */
1240 /* The "irqlock" check is only for testing. */
1241 printk(ei_local->irqlock
1242 ? "%s: Interrupted while interrupts are masked! isr=%#2x imr=%#2x.\n"
1243 : "%s: Reentering the interrupt handler! isr=%#2x imr=%#2x.\n",
1244 dev->name, inb_p(e8390_base + EN0_ISR),
1245 inb_p(e8390_base + EN0_IMR));
1247 spin_unlock(&ei_local->page_lock);
1252 printk(KERN_DEBUG "%s: interrupt(isr=%#2.2x).\n", dev->name,
1253 inb_p(e8390_base + EN0_ISR));
1255 outb_p(0x00, e8390_base + EN0_ISR);
1256 ei_local->irqlock = 1;
1258 /* !!Assumption!! -- we stay in page 0. Don't break this. */
1259 while ((interrupts = inb_p(e8390_base + EN0_ISR)) != 0
1260 && ++nr_serviced < MAX_SERVICE)
1262 if (!netif_running(dev) || (interrupts == 0xff)) {
1264 printk(KERN_WARNING "%s: interrupt from stopped card\n", dev->name);
1265 outb_p(interrupts, e8390_base + EN0_ISR);
1271 /* AX88190 bug fix. */
1272 outb_p(interrupts, e8390_base + EN0_ISR);
1273 for (i = 0; i < 10; i++) {
1274 if (!(inb(e8390_base + EN0_ISR) & interrupts))
1276 outb_p(0, e8390_base + EN0_ISR);
1277 outb_p(interrupts, e8390_base + EN0_ISR);
1279 if (interrupts & ENISR_OVER)
1281 else if (interrupts & (ENISR_RX+ENISR_RX_ERR))
1283 /* Got a good (?) packet. */
1286 /* Push the next to-transmit packet through. */
1287 if (interrupts & ENISR_TX)
1289 else if (interrupts & ENISR_TX_ERR)
1292 if (interrupts & ENISR_COUNTERS)
1294 ei_local->stat.rx_frame_errors += inb_p(e8390_base + EN0_COUNTER0);
1295 ei_local->stat.rx_crc_errors += inb_p(e8390_base + EN0_COUNTER1);
1296 ei_local->stat.rx_missed_errors+= inb_p(e8390_base + EN0_COUNTER2);
1300 if (interrupts && ei_debug)
1303 if (nr_serviced >= MAX_SERVICE)
1305 /* 0xFF is valid for a card removal */
1306 if(interrupts!=0xFF)
1307 printk(KERN_WARNING "%s: Too much work at interrupt, status %#2.2x\n",
1308 dev->name, interrupts);
1309 outb_p(ENISR_ALL, e8390_base + EN0_ISR); /* Ack. most intrs. */
1311 printk(KERN_WARNING "%s: unknown interrupt %#2x\n", dev->name, interrupts);
1312 outb_p(0xff, e8390_base + EN0_ISR); /* Ack. all intrs. */
1316 /* Turn 8390 interrupts back on. */
1317 ei_local->irqlock = 0;
1318 outb_p(ENISR_ALL, e8390_base + EN0_IMR);
1320 spin_unlock(&ei_local->page_lock);
1321 return IRQ_RETVAL(handled);
1325 * ei_tx_err - handle transmitter error
1326 * @dev: network device which threw the exception
1328 * A transmitter error has happened. Most likely excess collisions (which
1329 * is a fairly normal condition). If the error is one where the Tx will
1330 * have been aborted, we try and send another one right away, instead of
1331 * letting the failed packet sit and collect dust in the Tx buffer. This
1332 * is a much better solution as it avoids kernel based Tx timeouts, and
1333 * an unnecessary card reset.
1335 * Called with lock held.
1338 static void ei_tx_err(struct net_device *dev)
1340 long e8390_base = dev->base_addr;
1341 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1342 unsigned char txsr = inb_p(e8390_base+EN0_TSR);
1343 unsigned char tx_was_aborted = txsr & (ENTSR_ABT+ENTSR_FU);
1345 #ifdef VERBOSE_ERROR_DUMP
1346 printk(KERN_DEBUG "%s: transmitter error (%#2x): ", dev->name, txsr);
1347 if (txsr & ENTSR_ABT)
1348 printk("excess-collisions ");
1349 if (txsr & ENTSR_ND)
1350 printk("non-deferral ");
1351 if (txsr & ENTSR_CRS)
1352 printk("lost-carrier ");
1353 if (txsr & ENTSR_FU)
1354 printk("FIFO-underrun ");
1355 if (txsr & ENTSR_CDH)
1356 printk("lost-heartbeat ");
1364 ei_local->stat.tx_errors++;
1365 if (txsr & ENTSR_CRS) ei_local->stat.tx_carrier_errors++;
1366 if (txsr & ENTSR_CDH) ei_local->stat.tx_heartbeat_errors++;
1367 if (txsr & ENTSR_OWC) ei_local->stat.tx_window_errors++;
1372 * ei_tx_intr - transmit interrupt handler
1373 * @dev: network device for which tx intr is handled
1375 * We have finished a transmit: check for errors and then trigger the next
1376 * packet to be sent. Called with lock held.
1379 static void ei_tx_intr(struct net_device *dev)
1381 long e8390_base = dev->base_addr;
1382 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1383 int status = inb(e8390_base + EN0_TSR);
1386 * There are two Tx buffers, see which one finished, and trigger
1387 * the send of another one if it exists.
1389 ei_local->txqueue--;
1391 if (ei_local->tx1 < 0)
1393 if (ei_local->lasttx != 1 && ei_local->lasttx != -1)
1394 printk(KERN_ERR "%s: bogus last_tx_buffer %d, tx1=%d.\n",
1395 ei_local->name, ei_local->lasttx, ei_local->tx1);
1397 if (ei_local->tx2 > 0)
1399 ei_local->txing = 1;
1400 NS8390_trigger_send(dev, ei_local->tx2, ei_local->tx_start_page + 6);
1401 dev->trans_start = jiffies;
1403 ei_local->lasttx = 2;
1405 else ei_local->lasttx = 20, ei_local->txing = 0;
1407 else if (ei_local->tx2 < 0)
1409 if (ei_local->lasttx != 2 && ei_local->lasttx != -2)
1410 printk("%s: bogus last_tx_buffer %d, tx2=%d.\n",
1411 ei_local->name, ei_local->lasttx, ei_local->tx2);
1413 if (ei_local->tx1 > 0)
1415 ei_local->txing = 1;
1416 NS8390_trigger_send(dev, ei_local->tx1, ei_local->tx_start_page);
1417 dev->trans_start = jiffies;
1419 ei_local->lasttx = 1;
1422 ei_local->lasttx = 10, ei_local->txing = 0;
1424 // else printk(KERN_WARNING "%s: unexpected TX-done interrupt, lasttx=%d.\n",
1425 // dev->name, ei_local->lasttx);
1427 /* Minimize Tx latency: update the statistics after we restart TXing. */
1428 if (status & ENTSR_COL)
1429 ei_local->stat.collisions++;
1430 if (status & ENTSR_PTX)
1431 ei_local->stat.tx_packets++;
1434 ei_local->stat.tx_errors++;
1435 if (status & ENTSR_ABT)
1437 ei_local->stat.tx_aborted_errors++;
1438 ei_local->stat.collisions += 16;
1440 if (status & ENTSR_CRS)
1441 ei_local->stat.tx_carrier_errors++;
1442 if (status & ENTSR_FU)
1443 ei_local->stat.tx_fifo_errors++;
1444 if (status & ENTSR_CDH)
1445 ei_local->stat.tx_heartbeat_errors++;
1446 if (status & ENTSR_OWC)
1447 ei_local->stat.tx_window_errors++;
1449 netif_wake_queue(dev);
1453 * ei_receive - receive some packets
1454 * @dev: network device with which receive will be run
1456 * We have a good packet(s), get it/them out of the buffers.
1457 * Called with lock held.
1460 static void ei_receive(struct net_device *dev)
1462 long e8390_base = dev->base_addr;
1463 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1464 unsigned char rxing_page, this_frame, next_frame;
1465 unsigned short current_offset;
1466 int rx_pkt_count = 0;
1467 struct e8390_pkt_hdr rx_frame;
1469 while (++rx_pkt_count < 10)
1471 int pkt_len, pkt_stat;
1473 /* Get the rx page (incoming packet pointer). */
1474 rxing_page = inb_p(e8390_base + EN1_CURPAG -1);
1476 /* Remove one frame from the ring. Boundary is always a page behind. */
1477 this_frame = inb_p(e8390_base + EN0_BOUNDARY) + 1;
1478 if (this_frame >= ei_local->stop_page)
1479 this_frame = ei_local->rx_start_page;
1481 /* Someday we'll omit the previous, iff we never get this message.
1482 (There is at least one clone claimed to have a problem.)
1484 Keep quiet if it looks like a card removal. One problem here
1485 is that some clones crash in roughly the same way.
1487 if (ei_debug > 0 && this_frame != ei_local->current_page && (this_frame!=0x0 || rxing_page!=0xFF))
1488 printk(KERN_ERR "%s: mismatched read page pointers %2x vs %2x.\n",
1489 dev->name, this_frame, ei_local->current_page);
1491 if (this_frame == rxing_page) /* Read all the frames? */
1492 break; /* Done for now */
1494 current_offset = this_frame << 8;
1495 ei_get_8390_hdr(dev, &rx_frame, this_frame);
1497 pkt_len = rx_frame.count - sizeof(struct e8390_pkt_hdr);
1498 pkt_stat = rx_frame.status;
1500 next_frame = this_frame + 1 + ((pkt_len+4)>>8);
1502 if (pkt_len < 60 || pkt_len > 1518)
1505 printk(KERN_DEBUG "%s: bogus packet size: %d, status=%#2x nxpg=%#2x.\n",
1506 dev->name, rx_frame.count, rx_frame.status,
1508 ei_local->stat.rx_errors++;
1509 ei_local->stat.rx_length_errors++;
1511 else if ((pkt_stat & 0x0F) == ENRSR_RXOK)
1513 struct sk_buff *skb;
1515 skb = dev_alloc_skb(pkt_len+2);
1519 printk(KERN_DEBUG "%s: Couldn't allocate a sk_buff of size %d.\n",
1520 dev->name, pkt_len);
1521 ei_local->stat.rx_dropped++;
1526 skb_reserve(skb,2); /* IP headers on 16 byte boundaries */
1528 skb_put(skb, pkt_len); /* Make room */
1529 ei_block_input(dev, pkt_len, skb, current_offset + sizeof(rx_frame));
1530 skb->protocol=eth_type_trans(skb,dev);
1532 dev->last_rx = jiffies;
1533 ei_local->stat.rx_packets++;
1534 ei_local->stat.rx_bytes += pkt_len;
1535 if (pkt_stat & ENRSR_PHY)
1536 ei_local->stat.multicast++;
1542 printk(KERN_DEBUG "%s: bogus packet: status=%#2x nxpg=%#2x size=%d\n",
1543 dev->name, rx_frame.status, rx_frame.next,
1545 ei_local->stat.rx_errors++;
1546 /* NB: The NIC counts CRC, frame and missed errors. */
1547 if (pkt_stat & ENRSR_FO)
1548 ei_local->stat.rx_fifo_errors++;
1550 next_frame = rx_frame.next;
1552 /* This _should_ never happen: it's here for avoiding bad clones. */
1553 if (next_frame >= ei_local->stop_page) {
1554 printk("%s: next frame inconsistency, %#2x\n", dev->name,
1556 next_frame = ei_local->rx_start_page;
1558 ei_local->current_page = next_frame;
1559 outb_p(next_frame-1, e8390_base+EN0_BOUNDARY);
1566 * ei_rx_overrun - handle receiver overrun
1567 * @dev: network device which threw exception
1569 * We have a receiver overrun: we have to kick the 8390 to get it started
1570 * again. Problem is that you have to kick it exactly as NS prescribes in
1571 * the updated datasheets, or "the NIC may act in an unpredictable manner."
1572 * This includes causing "the NIC to defer indefinitely when it is stopped
1573 * on a busy network." Ugh.
1574 * Called with lock held. Don't call this with the interrupts off or your
1575 * computer will hate you - it takes 10ms or so.
1578 static void ei_rx_overrun(struct net_device *dev)
1580 axnet_dev_t *info = (axnet_dev_t *)dev;
1581 long e8390_base = dev->base_addr;
1582 unsigned char was_txing, must_resend = 0;
1583 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1586 * Record whether a Tx was in progress and then issue the
1589 was_txing = inb_p(e8390_base+E8390_CMD) & E8390_TRANS;
1590 outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD);
1593 printk(KERN_DEBUG "%s: Receiver overrun.\n", dev->name);
1594 ei_local->stat.rx_over_errors++;
1597 * Wait a full Tx time (1.2ms) + some guard time, NS says 1.6ms total.
1598 * Early datasheets said to poll the reset bit, but now they say that
1599 * it "is not a reliable indicator and subsequently should be ignored."
1600 * We wait at least 10ms.
1606 * Reset RBCR[01] back to zero as per magic incantation.
1608 outb_p(0x00, e8390_base+EN0_RCNTLO);
1609 outb_p(0x00, e8390_base+EN0_RCNTHI);
1612 * See if any Tx was interrupted or not. According to NS, this
1613 * step is vital, and skipping it will cause no end of havoc.
1618 unsigned char tx_completed = inb_p(e8390_base+EN0_ISR) & (ENISR_TX+ENISR_TX_ERR);
1624 * Have to enter loopback mode and then restart the NIC before
1625 * you are allowed to slurp packets up off the ring.
1627 outb_p(E8390_TXOFF, e8390_base + EN0_TXCR);
1628 outb_p(E8390_NODMA + E8390_PAGE0 + E8390_START, e8390_base + E8390_CMD);
1631 * Clear the Rx ring of all the debris, and ack the interrupt.
1636 * Leave loopback mode, and resend any packet that got stopped.
1638 outb_p(E8390_TXCONFIG | info->duplex_flag, e8390_base + EN0_TXCR);
1640 outb_p(E8390_NODMA + E8390_PAGE0 + E8390_START + E8390_TRANS, e8390_base + E8390_CMD);
1644 * Collect the stats. This is called unlocked and from several contexts.
1647 static struct net_device_stats *get_stats(struct net_device *dev)
1649 long ioaddr = dev->base_addr;
1650 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1651 unsigned long flags;
1653 /* If the card is stopped, just return the present stats. */
1654 if (!netif_running(dev))
1655 return &ei_local->stat;
1657 spin_lock_irqsave(&ei_local->page_lock,flags);
1658 /* Read the counter registers, assuming we are in page 0. */
1659 ei_local->stat.rx_frame_errors += inb_p(ioaddr + EN0_COUNTER0);
1660 ei_local->stat.rx_crc_errors += inb_p(ioaddr + EN0_COUNTER1);
1661 ei_local->stat.rx_missed_errors+= inb_p(ioaddr + EN0_COUNTER2);
1662 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1664 return &ei_local->stat;
1668 * Form the 64 bit 8390 multicast table from the linked list of addresses
1669 * associated with this dev structure.
1672 static inline void make_mc_bits(u8 *bits, struct net_device *dev)
1674 struct dev_mc_list *dmi;
1677 for (dmi=dev->mc_list; dmi; dmi=dmi->next) {
1679 crc = ether_crc(ETH_ALEN, dmi->dmi_addr);
1681 * The 8390 uses the 6 most significant bits of the
1682 * CRC to index the multicast table.
1684 bits[crc>>29] |= (1<<((crc>>26)&7));
1689 * do_set_multicast_list - set/clear multicast filter
1690 * @dev: net device for which multicast filter is adjusted
1692 * Set or clear the multicast filter for this adaptor.
1693 * Must be called with lock held.
1696 static void do_set_multicast_list(struct net_device *dev)
1698 long e8390_base = dev->base_addr;
1700 struct ei_device *ei_local = (struct ei_device*)netdev_priv(dev);
1702 if (!(dev->flags&(IFF_PROMISC|IFF_ALLMULTI))) {
1703 memset(ei_local->mcfilter, 0, 8);
1705 make_mc_bits(ei_local->mcfilter, dev);
1707 /* set to accept-all */
1708 memset(ei_local->mcfilter, 0xFF, 8);
1712 * DP8390 manuals don't specify any magic sequence for altering
1713 * the multicast regs on an already running card. To be safe, we
1714 * ensure multicast mode is off prior to loading up the new hash
1715 * table. If this proves to be not enough, we can always resort
1716 * to stopping the NIC, loading the table and then restarting.
1719 if (netif_running(dev))
1720 outb_p(E8390_RXCONFIG, e8390_base + EN0_RXCR);
1722 outb_p(E8390_NODMA + E8390_PAGE1, e8390_base + E8390_CMD);
1723 for(i = 0; i < 8; i++)
1725 outb_p(ei_local->mcfilter[i], e8390_base + EN1_MULT_SHIFT(i));
1727 outb_p(E8390_NODMA + E8390_PAGE0, e8390_base + E8390_CMD);
1729 if(dev->flags&IFF_PROMISC)
1730 outb_p(E8390_RXCONFIG | 0x58, e8390_base + EN0_RXCR);
1731 else if(dev->flags&IFF_ALLMULTI || dev->mc_list)
1732 outb_p(E8390_RXCONFIG | 0x48, e8390_base + EN0_RXCR);
1734 outb_p(E8390_RXCONFIG | 0x40, e8390_base + EN0_RXCR);
1738 * Called without lock held. This is invoked from user context and may
1739 * be parallel to just about everything else. Its also fairly quick and
1740 * not called too often. Must protect against both bh and irq users
1743 static void set_multicast_list(struct net_device *dev)
1745 unsigned long flags;
1747 spin_lock_irqsave(&dev_lock(dev), flags);
1748 do_set_multicast_list(dev);
1749 spin_unlock_irqrestore(&dev_lock(dev), flags);
1753 * axdev_setup - init rest of 8390 device struct
1754 * @dev: network device structure to init
1756 * Initialize the rest of the 8390 device structure. Do NOT __init
1757 * this, as it is used by 8390 based modular drivers too.
1760 static void axdev_setup(struct net_device *dev)
1762 struct ei_device *ei_local;
1764 printk(version_8390);
1766 SET_MODULE_OWNER(dev);
1769 ei_local = (struct ei_device *)netdev_priv(dev);
1770 spin_lock_init(&ei_local->page_lock);
1772 dev->hard_start_xmit = &ei_start_xmit;
1773 dev->get_stats = get_stats;
1774 dev->set_multicast_list = &set_multicast_list;
1779 /* This page of functions should be 8390 generic */
1780 /* Follow National Semi's recommendations for initializing the "NIC". */
1783 * AX88190_init - initialize 8390 hardware
1784 * @dev: network device to initialize
1785 * @startp: boolean. non-zero value to initiate chip processing
1787 * Must be called with lock held.
1790 static void AX88190_init(struct net_device *dev, int startp)
1792 axnet_dev_t *info = PRIV(dev);
1793 long e8390_base = dev->base_addr;
1794 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1796 int endcfg = ei_local->word16 ? (0x48 | ENDCFG_WTS) : 0x48;
1798 if(sizeof(struct e8390_pkt_hdr)!=4)
1799 panic("8390.c: header struct mispacked\n");
1800 /* Follow National Semi's recommendations for initing the DP83902. */
1801 outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD); /* 0x21 */
1802 outb_p(endcfg, e8390_base + EN0_DCFG); /* 0x48 or 0x49 */
1803 /* Clear the remote byte count registers. */
1804 outb_p(0x00, e8390_base + EN0_RCNTLO);
1805 outb_p(0x00, e8390_base + EN0_RCNTHI);
1806 /* Set to monitor and loopback mode -- this is vital!. */
1807 outb_p(E8390_RXOFF|0x40, e8390_base + EN0_RXCR); /* 0x60 */
1808 outb_p(E8390_TXOFF, e8390_base + EN0_TXCR); /* 0x02 */
1809 /* Set the transmit page and receive ring. */
1810 outb_p(ei_local->tx_start_page, e8390_base + EN0_TPSR);
1811 ei_local->tx1 = ei_local->tx2 = 0;
1812 outb_p(ei_local->rx_start_page, e8390_base + EN0_STARTPG);
1813 outb_p(ei_local->stop_page-1, e8390_base + EN0_BOUNDARY); /* 3c503 says 0x3f,NS0x26*/
1814 ei_local->current_page = ei_local->rx_start_page; /* assert boundary+1 */
1815 outb_p(ei_local->stop_page, e8390_base + EN0_STOPPG);
1816 /* Clear the pending interrupts and mask. */
1817 outb_p(0xFF, e8390_base + EN0_ISR);
1818 outb_p(0x00, e8390_base + EN0_IMR);
1820 /* Copy the station address into the DS8390 registers. */
1822 outb_p(E8390_NODMA + E8390_PAGE1 + E8390_STOP, e8390_base+E8390_CMD); /* 0x61 */
1823 for(i = 0; i < 6; i++)
1825 outb_p(dev->dev_addr[i], e8390_base + EN1_PHYS_SHIFT(i));
1826 if(inb_p(e8390_base + EN1_PHYS_SHIFT(i))!=dev->dev_addr[i])
1827 printk(KERN_ERR "Hw. address read/write mismap %d\n",i);
1830 outb_p(ei_local->rx_start_page, e8390_base + EN1_CURPAG);
1831 outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD);
1833 netif_start_queue(dev);
1834 ei_local->tx1 = ei_local->tx2 = 0;
1835 ei_local->txing = 0;
1839 outb_p(0xff, e8390_base + EN0_ISR);
1840 outb_p(ENISR_ALL, e8390_base + EN0_IMR);
1841 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, e8390_base+E8390_CMD);
1842 outb_p(E8390_TXCONFIG | info->duplex_flag,
1843 e8390_base + EN0_TXCR); /* xmit on. */
1844 /* 3c503 TechMan says rxconfig only after the NIC is started. */
1845 outb_p(E8390_RXCONFIG | 0x40, e8390_base + EN0_RXCR); /* rx on, */
1846 do_set_multicast_list(dev); /* (re)load the mcast table */
1850 /* Trigger a transmit start, assuming the length is valid.
1851 Always called with the page lock held */
1853 static void NS8390_trigger_send(struct net_device *dev, unsigned int length,
1856 long e8390_base = dev->base_addr;
1857 struct ei_device *ei_local __attribute((unused)) = (struct ei_device *) netdev_priv(dev);
1859 if (inb_p(e8390_base) & E8390_TRANS)
1861 printk(KERN_WARNING "%s: trigger_send() called with the transmitter busy.\n",
1865 outb_p(length & 0xff, e8390_base + EN0_TCNTLO);
1866 outb_p(length >> 8, e8390_base + EN0_TCNTHI);
1867 outb_p(start_page, e8390_base + EN0_TPSR);
1868 outb_p(E8390_NODMA+E8390_TRANS+E8390_START, e8390_base+E8390_CMD);