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 int axnet_config(struct pcmcia_device *link);
90 static void axnet_release(struct pcmcia_device *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 const struct ethtool_ops netdev_ethtool_ops;
95 static irqreturn_t ei_irq_wrapper(int irq, void *dev_id);
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);
117 /*====================================================================*/
119 typedef struct axnet_dev_t {
120 struct pcmcia_device *p_dev;
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_probe(struct pcmcia_device *link)
148 struct net_device *dev;
150 DEBUG(0, "axnet_attach()\n");
152 dev = alloc_netdev(sizeof(struct ei_device) + sizeof(axnet_dev_t),
153 "eth%d", axdev_setup);
161 link->irq.Attributes = IRQ_TYPE_DYNAMIC_SHARING;
162 link->irq.IRQInfo1 = IRQ_LEVEL_ID;
163 link->conf.Attributes = CONF_ENABLE_IRQ;
164 link->conf.IntType = INT_MEMORY_AND_IO;
166 dev->open = &axnet_open;
167 dev->stop = &axnet_close;
168 dev->do_ioctl = &axnet_ioctl;
169 SET_ETHTOOL_OPS(dev, &netdev_ethtool_ops);
171 return axnet_config(link);
174 /*======================================================================
176 This deletes a driver "instance". The device is de-registered
177 with Card Services. If it has been released, all local data
178 structures are freed. Otherwise, the structures will be freed
179 when the device is released.
181 ======================================================================*/
183 static void axnet_detach(struct pcmcia_device *link)
185 struct net_device *dev = link->priv;
187 DEBUG(0, "axnet_detach(0x%p)\n", link);
190 unregister_netdev(dev);
197 /*======================================================================
199 This probes for a card's hardware address by reading the PROM.
201 ======================================================================*/
203 static int get_prom(struct pcmcia_device *link)
205 struct net_device *dev = link->priv;
206 kio_addr_t ioaddr = dev->base_addr;
209 /* This is based on drivers/net/ne.c */
211 u_char value, offset;
213 {E8390_NODMA+E8390_PAGE0+E8390_STOP, E8390_CMD}, /* Select page 0*/
214 {0x01, EN0_DCFG}, /* Set word-wide access. */
215 {0x00, EN0_RCNTLO}, /* Clear the count regs. */
217 {0x00, EN0_IMR}, /* Mask completion irq. */
219 {E8390_RXOFF|0x40, EN0_RXCR}, /* 0x60 Set to monitor */
220 {E8390_TXOFF, EN0_TXCR}, /* 0x02 and loopback mode. */
223 {0x00, EN0_RSARLO}, /* DMA starting at 0x0400. */
225 {E8390_RREAD+E8390_START, E8390_CMD},
228 /* Not much of a test, but the alternatives are messy */
229 if (link->conf.ConfigBase != 0x03c0)
232 axnet_reset_8390(dev);
235 for (i = 0; i < ARRAY_SIZE(program_seq); i++)
236 outb_p(program_seq[i].value, ioaddr + program_seq[i].offset);
238 for (i = 0; i < 6; i += 2) {
239 j = inw(ioaddr + AXNET_DATAPORT);
240 dev->dev_addr[i] = j & 0xff;
241 dev->dev_addr[i+1] = j >> 8;
246 /*======================================================================
248 axnet_config() is scheduled to run after a CARD_INSERTION event
249 is received, to configure the PCMCIA socket, and to make the
250 ethernet device available to the system.
252 ======================================================================*/
254 #define CS_CHECK(fn, ret) \
255 do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
257 static int try_io_port(struct pcmcia_device *link)
260 if (link->io.NumPorts1 == 32) {
261 link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;
262 if (link->io.NumPorts2 > 0) {
263 /* for master/slave multifunction cards */
264 link->io.Attributes2 = IO_DATA_PATH_WIDTH_8;
265 link->irq.Attributes =
266 IRQ_TYPE_DYNAMIC_SHARING|IRQ_FIRST_SHARED;
269 /* This should be two 16-port windows */
270 link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
271 link->io.Attributes2 = IO_DATA_PATH_WIDTH_16;
273 if (link->io.BasePort1 == 0) {
274 link->io.IOAddrLines = 16;
275 for (j = 0; j < 0x400; j += 0x20) {
276 link->io.BasePort1 = j ^ 0x300;
277 link->io.BasePort2 = (j ^ 0x300) + 0x10;
278 ret = pcmcia_request_io(link, &link->io);
279 if (ret == CS_SUCCESS) return ret;
283 return pcmcia_request_io(link, &link->io);
287 static int axnet_config(struct pcmcia_device *link)
289 struct net_device *dev = link->priv;
290 axnet_dev_t *info = PRIV(dev);
293 int i, j, last_ret, last_fn;
295 DECLARE_MAC_BUF(mac);
297 DEBUG(0, "axnet_config(0x%p)\n", link);
299 tuple.Attributes = 0;
300 tuple.TupleData = (cisdata_t *)buf;
301 tuple.TupleDataMax = sizeof(buf);
302 tuple.TupleOffset = 0;
304 /* don't trust the CIS on this; Linksys got it wrong */
305 link->conf.Present = 0x63;
307 tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
308 tuple.Attributes = 0;
309 CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(link, &tuple));
310 while (last_ret == CS_SUCCESS) {
311 cistpl_cftable_entry_t *cfg = &(parse.cftable_entry);
312 cistpl_io_t *io = &(parse.cftable_entry.io);
314 if (pcmcia_get_tuple_data(link, &tuple) != 0 ||
315 pcmcia_parse_tuple(link, &tuple, &parse) != 0 ||
316 cfg->index == 0 || cfg->io.nwin == 0)
319 link->conf.ConfigIndex = 0x05;
320 /* For multifunction cards, by convention, we configure the
321 network function with window 0, and serial with window 1 */
323 i = (io->win[1].len > io->win[0].len);
324 link->io.BasePort2 = io->win[1-i].base;
325 link->io.NumPorts2 = io->win[1-i].len;
327 i = link->io.NumPorts2 = 0;
329 link->io.BasePort1 = io->win[i].base;
330 link->io.NumPorts1 = io->win[i].len;
331 link->io.IOAddrLines = io->flags & CISTPL_IO_LINES_MASK;
332 if (link->io.NumPorts1 + link->io.NumPorts2 >= 32) {
333 last_ret = try_io_port(link);
334 if (last_ret == CS_SUCCESS) break;
337 last_ret = pcmcia_get_next_tuple(link, &tuple);
339 if (last_ret != CS_SUCCESS) {
340 cs_error(link, RequestIO, last_ret);
344 CS_CHECK(RequestIRQ, pcmcia_request_irq(link, &link->irq));
346 if (link->io.NumPorts2 == 8) {
347 link->conf.Attributes |= CONF_ENABLE_SPKR;
348 link->conf.Status = CCSR_AUDIO_ENA;
351 CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link, &link->conf));
352 dev->irq = link->irq.AssignedIRQ;
353 dev->base_addr = link->io.BasePort1;
355 if (!get_prom(link)) {
356 printk(KERN_NOTICE "axnet_cs: this is not an AX88190 card!\n");
357 printk(KERN_NOTICE "axnet_cs: use pcnet_cs instead.\n");
361 ei_status.name = "AX88190";
362 ei_status.word16 = 1;
363 ei_status.tx_start_page = AXNET_START_PG;
364 ei_status.rx_start_page = AXNET_START_PG + TX_PAGES;
365 ei_status.stop_page = AXNET_STOP_PG;
366 ei_status.reset_8390 = &axnet_reset_8390;
367 ei_status.get_8390_hdr = &get_8390_hdr;
368 ei_status.block_input = &block_input;
369 ei_status.block_output = &block_output;
371 if (inb(dev->base_addr + AXNET_TEST) != 0)
372 info->flags |= IS_AX88790;
374 info->flags |= IS_AX88190;
376 if (info->flags & IS_AX88790)
377 outb(0x10, dev->base_addr + AXNET_GPIO); /* select Internal PHY */
379 for (i = 0; i < 32; i++) {
380 j = mdio_read(dev->base_addr + AXNET_MII_EEP, i, 1);
381 if ((j != 0) && (j != 0xffff)) break;
384 /* Maybe PHY is in power down mode. (PPD_SET = 1)
385 Bit 2 of CCSR is active low. */
387 conf_reg_t reg = { 0, CS_WRITE, CISREG_CCSR, 0x04 };
388 pcmcia_access_configuration_register(link, ®);
389 for (i = 0; i < 32; i++) {
390 j = mdio_read(dev->base_addr + AXNET_MII_EEP, i, 1);
391 if ((j != 0) && (j != 0xffff)) break;
395 info->phy_id = (i < 32) ? i : -1;
396 link->dev_node = &info->node;
397 SET_NETDEV_DEV(dev, &handle_to_dev(link));
399 if (register_netdev(dev) != 0) {
400 printk(KERN_NOTICE "axnet_cs: register_netdev() failed\n");
401 link->dev_node = NULL;
405 strcpy(info->node.dev_name, dev->name);
407 printk(KERN_INFO "%s: Asix AX88%d90: io %#3lx, irq %d, "
409 dev->name, ((info->flags & IS_AX88790) ? 7 : 1),
410 dev->base_addr, dev->irq,
411 print_mac(mac, dev->dev_addr));
412 if (info->phy_id != -1) {
413 DEBUG(0, " MII transceiver at index %d, status %x.\n", info->phy_id, j);
415 printk(KERN_NOTICE " No MII transceivers found!\n");
420 cs_error(link, last_fn, last_ret);
426 /*======================================================================
428 After a card is removed, axnet_release() will unregister the net
429 device, and release the PCMCIA configuration. If the device is
430 still open, this will be postponed until it is closed.
432 ======================================================================*/
434 static void axnet_release(struct pcmcia_device *link)
436 pcmcia_disable_device(link);
439 static int axnet_suspend(struct pcmcia_device *link)
441 struct net_device *dev = link->priv;
444 netif_device_detach(dev);
449 static int axnet_resume(struct pcmcia_device *link)
451 struct net_device *dev = link->priv;
454 axnet_reset_8390(dev);
455 AX88190_init(dev, 1);
456 netif_device_attach(dev);
463 /*======================================================================
465 MII interface support
467 ======================================================================*/
469 #define MDIO_SHIFT_CLK 0x01
470 #define MDIO_DATA_WRITE0 0x00
471 #define MDIO_DATA_WRITE1 0x08
472 #define MDIO_DATA_READ 0x04
473 #define MDIO_MASK 0x0f
474 #define MDIO_ENB_IN 0x02
476 static void mdio_sync(kio_addr_t addr)
479 for (bits = 0; bits < 32; bits++) {
480 outb_p(MDIO_DATA_WRITE1, addr);
481 outb_p(MDIO_DATA_WRITE1 | MDIO_SHIFT_CLK, addr);
485 static int mdio_read(kio_addr_t addr, int phy_id, int loc)
487 u_int cmd = (0xf6<<10)|(phy_id<<5)|loc;
491 for (i = 14; i >= 0; i--) {
492 int dat = (cmd&(1<<i)) ? MDIO_DATA_WRITE1 : MDIO_DATA_WRITE0;
494 outb_p(dat | MDIO_SHIFT_CLK, addr);
496 for (i = 19; i > 0; i--) {
497 outb_p(MDIO_ENB_IN, addr);
498 retval = (retval << 1) | ((inb_p(addr) & MDIO_DATA_READ) != 0);
499 outb_p(MDIO_ENB_IN | MDIO_SHIFT_CLK, addr);
501 return (retval>>1) & 0xffff;
504 static void mdio_write(kio_addr_t addr, int phy_id, int loc, int value)
506 u_int cmd = (0x05<<28)|(phy_id<<23)|(loc<<18)|(1<<17)|value;
510 for (i = 31; i >= 0; i--) {
511 int dat = (cmd&(1<<i)) ? MDIO_DATA_WRITE1 : MDIO_DATA_WRITE0;
513 outb_p(dat | MDIO_SHIFT_CLK, addr);
515 for (i = 1; i >= 0; i--) {
516 outb_p(MDIO_ENB_IN, addr);
517 outb_p(MDIO_ENB_IN | MDIO_SHIFT_CLK, addr);
521 /*====================================================================*/
523 static int axnet_open(struct net_device *dev)
526 axnet_dev_t *info = PRIV(dev);
527 struct pcmcia_device *link = info->p_dev;
529 DEBUG(2, "axnet_open('%s')\n", dev->name);
531 if (!pcmcia_dev_present(link))
534 ret = request_irq(dev->irq, ei_irq_wrapper, IRQF_SHARED, "axnet_cs", dev);
540 info->link_status = 0x00;
541 init_timer(&info->watchdog);
542 info->watchdog.function = &ei_watchdog;
543 info->watchdog.data = (u_long)dev;
544 info->watchdog.expires = jiffies + HZ;
545 add_timer(&info->watchdog);
550 /*====================================================================*/
552 static int axnet_close(struct net_device *dev)
554 axnet_dev_t *info = PRIV(dev);
555 struct pcmcia_device *link = info->p_dev;
557 DEBUG(2, "axnet_close('%s')\n", dev->name);
560 free_irq(dev->irq, dev);
563 netif_stop_queue(dev);
564 del_timer_sync(&info->watchdog);
569 /*======================================================================
571 Hard reset the card. This used to pause for the same period that
572 a 8390 reset command required, but that shouldn't be necessary.
574 ======================================================================*/
576 static void axnet_reset_8390(struct net_device *dev)
578 kio_addr_t nic_base = dev->base_addr;
581 ei_status.txing = ei_status.dmaing = 0;
583 outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, nic_base + E8390_CMD);
585 outb(inb(nic_base + AXNET_RESET), nic_base + AXNET_RESET);
587 for (i = 0; i < 100; i++) {
588 if ((inb_p(nic_base+EN0_ISR) & ENISR_RESET) != 0)
592 outb_p(ENISR_RESET, nic_base + EN0_ISR); /* Ack intr. */
595 printk(KERN_ERR "%s: axnet_reset_8390() did not complete.\n",
598 } /* axnet_reset_8390 */
600 /*====================================================================*/
602 static irqreturn_t ei_irq_wrapper(int irq, void *dev_id)
604 struct net_device *dev = dev_id;
605 PRIV(dev)->stale = 0;
606 return ax_interrupt(irq, dev_id);
609 static void ei_watchdog(u_long arg)
611 struct net_device *dev = (struct net_device *)(arg);
612 axnet_dev_t *info = PRIV(dev);
613 kio_addr_t nic_base = dev->base_addr;
614 kio_addr_t mii_addr = nic_base + AXNET_MII_EEP;
617 if (!netif_device_present(dev)) goto reschedule;
619 /* Check for pending interrupt with expired latency timer: with
620 this, we can limp along even if the interrupt is blocked */
621 if (info->stale++ && (inb_p(nic_base + EN0_ISR) & ENISR_ALL)) {
622 if (!info->fast_poll)
623 printk(KERN_INFO "%s: interrupt(s) dropped!\n", dev->name);
624 ei_irq_wrapper(dev->irq, dev);
625 info->fast_poll = HZ;
627 if (info->fast_poll) {
629 info->watchdog.expires = jiffies + 1;
630 add_timer(&info->watchdog);
634 if (info->phy_id < 0)
636 link = mdio_read(mii_addr, info->phy_id, 1);
637 if (!link || (link == 0xffff)) {
638 printk(KERN_INFO "%s: MII is missing!\n", dev->name);
644 if (link != info->link_status) {
645 u_short p = mdio_read(mii_addr, info->phy_id, 5);
646 printk(KERN_INFO "%s: %s link beat\n", dev->name,
647 (link) ? "found" : "lost");
649 info->duplex_flag = (p & 0x0140) ? 0x80 : 0x00;
651 printk(KERN_INFO "%s: autonegotiation complete: "
652 "%sbaseT-%cD selected\n", dev->name,
653 ((p & 0x0180) ? "100" : "10"),
654 ((p & 0x0140) ? 'F' : 'H'));
656 printk(KERN_INFO "%s: link partner did not autonegotiate\n",
658 AX88190_init(dev, 1);
660 info->link_status = link;
664 info->watchdog.expires = jiffies + HZ;
665 add_timer(&info->watchdog);
668 static void netdev_get_drvinfo(struct net_device *dev,
669 struct ethtool_drvinfo *info)
671 strcpy(info->driver, "axnet_cs");
674 static const struct ethtool_ops netdev_ethtool_ops = {
675 .get_drvinfo = netdev_get_drvinfo,
678 /*====================================================================*/
680 static int axnet_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
682 axnet_dev_t *info = PRIV(dev);
683 u16 *data = (u16 *)&rq->ifr_ifru;
684 kio_addr_t mii_addr = dev->base_addr + AXNET_MII_EEP;
687 data[0] = info->phy_id;
688 case SIOCGMIIREG: /* Read MII PHY register. */
689 data[3] = mdio_read(mii_addr, data[0], data[1] & 0x1f);
691 case SIOCSMIIREG: /* Write MII PHY register. */
692 if (!capable(CAP_NET_ADMIN))
694 mdio_write(mii_addr, data[0], data[1] & 0x1f, data[2]);
700 /*====================================================================*/
702 static void get_8390_hdr(struct net_device *dev,
703 struct e8390_pkt_hdr *hdr,
706 kio_addr_t nic_base = dev->base_addr;
708 outb_p(0, nic_base + EN0_RSARLO); /* On page boundary */
709 outb_p(ring_page, nic_base + EN0_RSARHI);
710 outb_p(E8390_RREAD+E8390_START, nic_base + AXNET_CMD);
712 insw(nic_base + AXNET_DATAPORT, hdr,
713 sizeof(struct e8390_pkt_hdr)>>1);
714 /* Fix for big endian systems */
715 hdr->count = le16_to_cpu(hdr->count);
719 /*====================================================================*/
721 static void block_input(struct net_device *dev, int count,
722 struct sk_buff *skb, int ring_offset)
724 kio_addr_t nic_base = dev->base_addr;
725 int xfer_count = count;
726 char *buf = skb->data;
729 if ((ei_debug > 4) && (count != 4))
730 printk(KERN_DEBUG "%s: [bi=%d]\n", dev->name, count+4);
732 outb_p(ring_offset & 0xff, nic_base + EN0_RSARLO);
733 outb_p(ring_offset >> 8, nic_base + EN0_RSARHI);
734 outb_p(E8390_RREAD+E8390_START, nic_base + AXNET_CMD);
736 insw(nic_base + AXNET_DATAPORT,buf,count>>1);
738 buf[count-1] = inb(nic_base + AXNET_DATAPORT), xfer_count++;
742 /*====================================================================*/
744 static void block_output(struct net_device *dev, int count,
745 const u_char *buf, const int start_page)
747 kio_addr_t nic_base = dev->base_addr;
751 printk(KERN_DEBUG "%s: [bo=%d]\n", dev->name, count);
754 /* Round the count up for word writes. Do we need to do this?
755 What effect will an odd byte count have on the 8390?
756 I should check someday. */
760 outb_p(0x00, nic_base + EN0_RSARLO);
761 outb_p(start_page, nic_base + EN0_RSARHI);
762 outb_p(E8390_RWRITE+E8390_START, nic_base + AXNET_CMD);
763 outsw(nic_base + AXNET_DATAPORT, buf, count>>1);
766 static struct pcmcia_device_id axnet_ids[] = {
767 PCMCIA_PFC_DEVICE_MANF_CARD(0, 0x016c, 0x0081),
768 PCMCIA_DEVICE_MANF_CARD(0x018a, 0x0301),
769 PCMCIA_DEVICE_MANF_CARD(0x026f, 0x0301),
770 PCMCIA_DEVICE_MANF_CARD(0x026f, 0x0303),
771 PCMCIA_DEVICE_MANF_CARD(0x026f, 0x0309),
772 PCMCIA_DEVICE_MANF_CARD(0x0274, 0x1106),
773 PCMCIA_DEVICE_MANF_CARD(0x8a01, 0xc1ab),
774 PCMCIA_DEVICE_MANF_CARD(0x021b, 0x0202),
775 PCMCIA_DEVICE_MANF_CARD(0xffff, 0x1090),
776 PCMCIA_DEVICE_PROD_ID12("AmbiCom,Inc.", "Fast Ethernet PC Card(AMB8110)", 0x49b020a7, 0x119cc9fc),
777 PCMCIA_DEVICE_PROD_ID124("Fast Ethernet", "16-bit PC Card", "AX88190", 0xb4be14e3, 0x9a12eb6a, 0xab9be5ef),
778 PCMCIA_DEVICE_PROD_ID12("ASIX", "AX88190", 0x0959823b, 0xab9be5ef),
779 PCMCIA_DEVICE_PROD_ID12("Billionton", "LNA-100B", 0x552ab682, 0xbc3b87e1),
780 PCMCIA_DEVICE_PROD_ID12("CHEETAH ETHERCARD", "EN2228", 0x00fa7bc8, 0x00e990cc),
781 PCMCIA_DEVICE_PROD_ID12("CNet", "CNF301", 0xbc477dde, 0x78c5f40b),
782 PCMCIA_DEVICE_PROD_ID12("corega K.K.", "corega FEther PCC-TXD", 0x5261440f, 0x436768c5),
783 PCMCIA_DEVICE_PROD_ID12("corega K.K.", "corega FEtherII PCC-TXD", 0x5261440f, 0x730df72e),
784 PCMCIA_DEVICE_PROD_ID12("Dynalink", "L100C16", 0x55632fd5, 0x66bc2a90),
785 PCMCIA_DEVICE_PROD_ID12("Linksys", "EtherFast 10/100 PC Card (PCMPC100 V3)", 0x0733cc81, 0x232019a8),
786 PCMCIA_DEVICE_PROD_ID12("MELCO", "LPC3-TX", 0x481e0094, 0xf91af609),
787 PCMCIA_DEVICE_PROD_ID12("PCMCIA", "100BASE", 0x281f1c5d, 0x7c2add04),
788 PCMCIA_DEVICE_PROD_ID12("PCMCIA", "FastEtherCard", 0x281f1c5d, 0x7ef26116),
789 PCMCIA_DEVICE_PROD_ID12("PCMCIA", "FEP501", 0x281f1c5d, 0x2e272058),
790 PCMCIA_DEVICE_PROD_ID14("Network Everywhere", "AX88190", 0x820a67b6, 0xab9be5ef),
793 MODULE_DEVICE_TABLE(pcmcia, axnet_ids);
795 static struct pcmcia_driver axnet_cs_driver = {
796 .owner = THIS_MODULE,
800 .probe = axnet_probe,
801 .remove = axnet_detach,
802 .id_table = axnet_ids,
803 .suspend = axnet_suspend,
804 .resume = axnet_resume,
807 static int __init init_axnet_cs(void)
809 return pcmcia_register_driver(&axnet_cs_driver);
812 static void __exit exit_axnet_cs(void)
814 pcmcia_unregister_driver(&axnet_cs_driver);
817 module_init(init_axnet_cs);
818 module_exit(exit_axnet_cs);
820 /*====================================================================*/
822 /* 8390.c: A general NS8390 ethernet driver core for linux. */
824 Written 1992-94 by Donald Becker.
826 Copyright 1993 United States Government as represented by the
827 Director, National Security Agency.
829 This software may be used and distributed according to the terms
830 of the GNU General Public License, incorporated herein by reference.
832 The author may be reached as becker@scyld.com, or C/O
833 Scyld Computing Corporation
834 410 Severn Ave., Suite 210
837 This is the chip-specific code for many 8390-based ethernet adaptors.
838 This is not a complete driver, it must be combined with board-specific
839 code such as ne.c, wd.c, 3c503.c, etc.
841 Seeing how at least eight drivers use this code, (not counting the
842 PCMCIA ones either) it is easy to break some card by what seems like
843 a simple innocent change. Please contact me or Donald if you think
844 you have found something that needs changing. -- PG
848 Paul Gortmaker : remove set_bit lock, other cleanups.
849 Paul Gortmaker : add ei_get_8390_hdr() so we can pass skb's to
850 ei_block_input() for eth_io_copy_and_sum().
851 Paul Gortmaker : exchange static int ei_pingpong for a #define,
852 also add better Tx error handling.
853 Paul Gortmaker : rewrite Rx overrun handling as per NS specs.
854 Alexey Kuznetsov : use the 8390's six bit hash multicast filter.
855 Paul Gortmaker : tweak ANK's above multicast changes a bit.
856 Paul Gortmaker : update packet statistics for v2.1.x
857 Alan Cox : support arbitary stupid port mappings on the
858 68K Macintosh. Support >16bit I/O spaces
859 Paul Gortmaker : add kmod support for auto-loading of the 8390
860 module by all drivers that require it.
861 Alan Cox : Spinlocking work, added 'BUG_83C690'
862 Paul Gortmaker : Separate out Tx timeout code from Tx path.
865 The National Semiconductor LAN Databook, and the 3Com 3c503 databook.
869 static const char *version_8390 =
870 "8390.c:v1.10cvs 9/23/94 Donald Becker (becker@scyld.com)\n";
872 #include <linux/bitops.h>
874 #include <linux/fcntl.h>
875 #include <linux/in.h>
876 #include <linux/interrupt.h>
878 #include <linux/etherdevice.h>
882 /* These are the operational function interfaces to board-specific
884 void reset_8390(struct net_device *dev)
885 Resets the board associated with DEV, including a hardware reset of
886 the 8390. This is only called when there is a transmit timeout, and
887 it is always followed by 8390_init().
888 void block_output(struct net_device *dev, int count, const unsigned char *buf,
890 Write the COUNT bytes of BUF to the packet buffer at START_PAGE. The
891 "page" value uses the 8390's 256-byte pages.
892 void get_8390_hdr(struct net_device *dev, struct e8390_hdr *hdr, int ring_page)
893 Read the 4 byte, page aligned 8390 header. *If* there is a
894 subsequent read, it will be of the rest of the packet.
895 void block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset)
896 Read COUNT bytes from the packet buffer into the skb data area. Start
897 reading from RING_OFFSET, the address as the 8390 sees it. This will always
898 follow the read of the 8390 header.
900 #define ei_reset_8390 (ei_local->reset_8390)
901 #define ei_block_output (ei_local->block_output)
902 #define ei_block_input (ei_local->block_input)
903 #define ei_get_8390_hdr (ei_local->get_8390_hdr)
905 /* use 0 for production, 1 for verification, >2 for debug */
910 /* Index to functions. */
911 static void ei_tx_intr(struct net_device *dev);
912 static void ei_tx_err(struct net_device *dev);
913 static void ei_tx_timeout(struct net_device *dev);
914 static void ei_receive(struct net_device *dev);
915 static void ei_rx_overrun(struct net_device *dev);
917 /* Routines generic to NS8390-based boards. */
918 static void NS8390_trigger_send(struct net_device *dev, unsigned int length,
920 static void set_multicast_list(struct net_device *dev);
921 static void do_set_multicast_list(struct net_device *dev);
924 * SMP and the 8390 setup.
926 * The 8390 isnt exactly designed to be multithreaded on RX/TX. There is
927 * a page register that controls bank and packet buffer access. We guard
928 * this with ei_local->page_lock. Nobody should assume or set the page other
929 * than zero when the lock is not held. Lock holders must restore page 0
930 * before unlocking. Even pure readers must take the lock to protect in
933 * To make life difficult the chip can also be very slow. We therefore can't
934 * just use spinlocks. For the longer lockups we disable the irq the device
935 * sits on and hold the lock. We must hold the lock because there is a dual
936 * processor case other than interrupts (get stats/set multicast list in
937 * parallel with each other and transmit).
939 * Note: in theory we can just disable the irq on the card _but_ there is
940 * a latency on SMP irq delivery. So we can easily go "disable irq" "sync irqs"
941 * enter lock, take the queued irq. So we waddle instead of flying.
943 * Finally by special arrangement for the purpose of being generally
944 * annoying the transmit function is called bh atomic. That places
945 * restrictions on the user context callers as disable_irq won't save
950 * ax_open - Open/initialize the board.
951 * @dev: network device to initialize
953 * This routine goes all-out, setting everything
954 * up anew at each open, even though many of these registers should only
955 * need to be set once at boot.
957 static int ax_open(struct net_device *dev)
960 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
962 #ifdef HAVE_TX_TIMEOUT
963 /* The card I/O part of the driver (e.g. 3c503) can hook a Tx timeout
964 wrapper that does e.g. media check & then calls ei_tx_timeout. */
965 if (dev->tx_timeout == NULL)
966 dev->tx_timeout = ei_tx_timeout;
967 if (dev->watchdog_timeo <= 0)
968 dev->watchdog_timeo = TX_TIMEOUT;
972 * Grab the page lock so we own the register set, then call
976 spin_lock_irqsave(&ei_local->page_lock, flags);
977 AX88190_init(dev, 1);
978 /* Set the flag before we drop the lock, That way the IRQ arrives
979 after its set and we get no silly warnings */
980 netif_start_queue(dev);
981 spin_unlock_irqrestore(&ei_local->page_lock, flags);
982 ei_local->irqlock = 0;
986 #define dev_lock(dev) (((struct ei_device *)netdev_priv(dev))->page_lock)
989 * ax_close - shut down network device
990 * @dev: network device to close
992 * Opposite of ax_open(). Only used when "ifconfig <devname> down" is done.
994 int ax_close(struct net_device *dev)
999 * Hold the page lock during close
1002 spin_lock_irqsave(&dev_lock(dev), flags);
1003 AX88190_init(dev, 0);
1004 spin_unlock_irqrestore(&dev_lock(dev), flags);
1005 netif_stop_queue(dev);
1010 * ei_tx_timeout - handle transmit time out condition
1011 * @dev: network device which has apparently fallen asleep
1013 * Called by kernel when device never acknowledges a transmit has
1014 * completed (or failed) - i.e. never posted a Tx related interrupt.
1017 void ei_tx_timeout(struct net_device *dev)
1019 long e8390_base = dev->base_addr;
1020 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1021 int txsr, isr, tickssofar = jiffies - dev->trans_start;
1022 unsigned long flags;
1024 ei_local->stat.tx_errors++;
1026 spin_lock_irqsave(&ei_local->page_lock, flags);
1027 txsr = inb(e8390_base+EN0_TSR);
1028 isr = inb(e8390_base+EN0_ISR);
1029 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1031 printk(KERN_DEBUG "%s: Tx timed out, %s TSR=%#2x, ISR=%#2x, t=%d.\n",
1032 dev->name, (txsr & ENTSR_ABT) ? "excess collisions." :
1033 (isr) ? "lost interrupt?" : "cable problem?", txsr, isr, tickssofar);
1035 if (!isr && !ei_local->stat.tx_packets)
1037 /* The 8390 probably hasn't gotten on the cable yet. */
1038 ei_local->interface_num ^= 1; /* Try a different xcvr. */
1041 /* Ugly but a reset can be slow, yet must be protected */
1043 spin_lock_irqsave(&ei_local->page_lock, flags);
1045 /* Try to restart the card. Perhaps the user has fixed something. */
1047 AX88190_init(dev, 1);
1049 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1050 netif_wake_queue(dev);
1054 * ei_start_xmit - begin packet transmission
1055 * @skb: packet to be sent
1056 * @dev: network device to which packet is sent
1058 * Sends a packet to an 8390 network device.
1061 static int ei_start_xmit(struct sk_buff *skb, struct net_device *dev)
1063 long e8390_base = dev->base_addr;
1064 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1065 int length, send_length, output_page;
1066 unsigned long flags;
1067 u8 packet[ETH_ZLEN];
1069 netif_stop_queue(dev);
1073 /* Mask interrupts from the ethercard.
1074 SMP: We have to grab the lock here otherwise the IRQ handler
1075 on another CPU can flip window and race the IRQ mask set. We end
1076 up trashing the mcast filter not disabling irqs if we don't lock */
1078 spin_lock_irqsave(&ei_local->page_lock, flags);
1079 outb_p(0x00, e8390_base + EN0_IMR);
1080 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1083 * Slow phase with lock held.
1086 spin_lock_irqsave(&ei_local->page_lock, flags);
1088 ei_local->irqlock = 1;
1090 send_length = ETH_ZLEN < length ? length : ETH_ZLEN;
1093 * We have two Tx slots available for use. Find the first free
1094 * slot, and then perform some sanity checks. With two Tx bufs,
1095 * you get very close to transmitting back-to-back packets. With
1096 * only one Tx buf, the transmitter sits idle while you reload the
1097 * card, leaving a substantial gap between each transmitted packet.
1100 if (ei_local->tx1 == 0)
1102 output_page = ei_local->tx_start_page;
1103 ei_local->tx1 = send_length;
1104 if (ei_debug && ei_local->tx2 > 0)
1105 printk(KERN_DEBUG "%s: idle transmitter tx2=%d, lasttx=%d, txing=%d.\n",
1106 dev->name, ei_local->tx2, ei_local->lasttx, ei_local->txing);
1108 else if (ei_local->tx2 == 0)
1110 output_page = ei_local->tx_start_page + TX_PAGES/2;
1111 ei_local->tx2 = send_length;
1112 if (ei_debug && ei_local->tx1 > 0)
1113 printk(KERN_DEBUG "%s: idle transmitter, tx1=%d, lasttx=%d, txing=%d.\n",
1114 dev->name, ei_local->tx1, ei_local->lasttx, ei_local->txing);
1117 { /* We should never get here. */
1119 printk(KERN_DEBUG "%s: No Tx buffers free! tx1=%d tx2=%d last=%d\n",
1120 dev->name, ei_local->tx1, ei_local->tx2, ei_local->lasttx);
1121 ei_local->irqlock = 0;
1122 netif_stop_queue(dev);
1123 outb_p(ENISR_ALL, e8390_base + EN0_IMR);
1124 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1125 ei_local->stat.tx_errors++;
1130 * Okay, now upload the packet and trigger a send if the transmitter
1131 * isn't already sending. If it is busy, the interrupt handler will
1132 * trigger the send later, upon receiving a Tx done interrupt.
1135 if (length == skb->len)
1136 ei_block_output(dev, length, skb->data, output_page);
1138 memset(packet, 0, ETH_ZLEN);
1139 skb_copy_from_linear_data(skb, packet, skb->len);
1140 ei_block_output(dev, length, packet, output_page);
1143 if (! ei_local->txing)
1145 ei_local->txing = 1;
1146 NS8390_trigger_send(dev, send_length, output_page);
1147 dev->trans_start = jiffies;
1148 if (output_page == ei_local->tx_start_page)
1151 ei_local->lasttx = -1;
1156 ei_local->lasttx = -2;
1159 else ei_local->txqueue++;
1161 if (ei_local->tx1 && ei_local->tx2)
1162 netif_stop_queue(dev);
1164 netif_start_queue(dev);
1166 /* Turn 8390 interrupts back on. */
1167 ei_local->irqlock = 0;
1168 outb_p(ENISR_ALL, e8390_base + EN0_IMR);
1170 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1172 dev_kfree_skb (skb);
1173 ei_local->stat.tx_bytes += send_length;
1179 * ax_interrupt - handle the interrupts from an 8390
1180 * @irq: interrupt number
1181 * @dev_id: a pointer to the net_device
1184 * Handle the ether interface interrupts. We pull packets from
1185 * the 8390 via the card specific functions and fire them at the networking
1186 * stack. We also handle transmit completions and wake the transmit path if
1187 * necessary. We also update the counters and do other housekeeping as
1191 static irqreturn_t ax_interrupt(int irq, void *dev_id)
1193 struct net_device *dev = dev_id;
1195 int interrupts, nr_serviced = 0, i;
1196 struct ei_device *ei_local;
1199 e8390_base = dev->base_addr;
1200 ei_local = netdev_priv(dev);
1203 * Protect the irq test too.
1206 spin_lock(&ei_local->page_lock);
1208 if (ei_local->irqlock)
1210 #if 1 /* This might just be an interrupt for a PCI device sharing this line */
1211 /* The "irqlock" check is only for testing. */
1212 printk(ei_local->irqlock
1213 ? "%s: Interrupted while interrupts are masked! isr=%#2x imr=%#2x.\n"
1214 : "%s: Reentering the interrupt handler! isr=%#2x imr=%#2x.\n",
1215 dev->name, inb_p(e8390_base + EN0_ISR),
1216 inb_p(e8390_base + EN0_IMR));
1218 spin_unlock(&ei_local->page_lock);
1223 printk(KERN_DEBUG "%s: interrupt(isr=%#2.2x).\n", dev->name,
1224 inb_p(e8390_base + EN0_ISR));
1226 outb_p(0x00, e8390_base + EN0_ISR);
1227 ei_local->irqlock = 1;
1229 /* !!Assumption!! -- we stay in page 0. Don't break this. */
1230 while ((interrupts = inb_p(e8390_base + EN0_ISR)) != 0
1231 && ++nr_serviced < MAX_SERVICE)
1233 if (!netif_running(dev) || (interrupts == 0xff)) {
1235 printk(KERN_WARNING "%s: interrupt from stopped card\n", dev->name);
1236 outb_p(interrupts, e8390_base + EN0_ISR);
1242 /* AX88190 bug fix. */
1243 outb_p(interrupts, e8390_base + EN0_ISR);
1244 for (i = 0; i < 10; i++) {
1245 if (!(inb(e8390_base + EN0_ISR) & interrupts))
1247 outb_p(0, e8390_base + EN0_ISR);
1248 outb_p(interrupts, e8390_base + EN0_ISR);
1250 if (interrupts & ENISR_OVER)
1252 else if (interrupts & (ENISR_RX+ENISR_RX_ERR))
1254 /* Got a good (?) packet. */
1257 /* Push the next to-transmit packet through. */
1258 if (interrupts & ENISR_TX)
1260 else if (interrupts & ENISR_TX_ERR)
1263 if (interrupts & ENISR_COUNTERS)
1265 ei_local->stat.rx_frame_errors += inb_p(e8390_base + EN0_COUNTER0);
1266 ei_local->stat.rx_crc_errors += inb_p(e8390_base + EN0_COUNTER1);
1267 ei_local->stat.rx_missed_errors+= inb_p(e8390_base + EN0_COUNTER2);
1271 if (interrupts && ei_debug)
1274 if (nr_serviced >= MAX_SERVICE)
1276 /* 0xFF is valid for a card removal */
1277 if(interrupts!=0xFF)
1278 printk(KERN_WARNING "%s: Too much work at interrupt, status %#2.2x\n",
1279 dev->name, interrupts);
1280 outb_p(ENISR_ALL, e8390_base + EN0_ISR); /* Ack. most intrs. */
1282 printk(KERN_WARNING "%s: unknown interrupt %#2x\n", dev->name, interrupts);
1283 outb_p(0xff, e8390_base + EN0_ISR); /* Ack. all intrs. */
1287 /* Turn 8390 interrupts back on. */
1288 ei_local->irqlock = 0;
1289 outb_p(ENISR_ALL, e8390_base + EN0_IMR);
1291 spin_unlock(&ei_local->page_lock);
1292 return IRQ_RETVAL(handled);
1296 * ei_tx_err - handle transmitter error
1297 * @dev: network device which threw the exception
1299 * A transmitter error has happened. Most likely excess collisions (which
1300 * is a fairly normal condition). If the error is one where the Tx will
1301 * have been aborted, we try and send another one right away, instead of
1302 * letting the failed packet sit and collect dust in the Tx buffer. This
1303 * is a much better solution as it avoids kernel based Tx timeouts, and
1304 * an unnecessary card reset.
1306 * Called with lock held.
1309 static void ei_tx_err(struct net_device *dev)
1311 long e8390_base = dev->base_addr;
1312 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1313 unsigned char txsr = inb_p(e8390_base+EN0_TSR);
1314 unsigned char tx_was_aborted = txsr & (ENTSR_ABT+ENTSR_FU);
1316 #ifdef VERBOSE_ERROR_DUMP
1317 printk(KERN_DEBUG "%s: transmitter error (%#2x): ", dev->name, txsr);
1318 if (txsr & ENTSR_ABT)
1319 printk("excess-collisions ");
1320 if (txsr & ENTSR_ND)
1321 printk("non-deferral ");
1322 if (txsr & ENTSR_CRS)
1323 printk("lost-carrier ");
1324 if (txsr & ENTSR_FU)
1325 printk("FIFO-underrun ");
1326 if (txsr & ENTSR_CDH)
1327 printk("lost-heartbeat ");
1335 ei_local->stat.tx_errors++;
1336 if (txsr & ENTSR_CRS) ei_local->stat.tx_carrier_errors++;
1337 if (txsr & ENTSR_CDH) ei_local->stat.tx_heartbeat_errors++;
1338 if (txsr & ENTSR_OWC) ei_local->stat.tx_window_errors++;
1343 * ei_tx_intr - transmit interrupt handler
1344 * @dev: network device for which tx intr is handled
1346 * We have finished a transmit: check for errors and then trigger the next
1347 * packet to be sent. Called with lock held.
1350 static void ei_tx_intr(struct net_device *dev)
1352 long e8390_base = dev->base_addr;
1353 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1354 int status = inb(e8390_base + EN0_TSR);
1357 * There are two Tx buffers, see which one finished, and trigger
1358 * the send of another one if it exists.
1360 ei_local->txqueue--;
1362 if (ei_local->tx1 < 0)
1364 if (ei_local->lasttx != 1 && ei_local->lasttx != -1)
1365 printk(KERN_ERR "%s: bogus last_tx_buffer %d, tx1=%d.\n",
1366 ei_local->name, ei_local->lasttx, ei_local->tx1);
1368 if (ei_local->tx2 > 0)
1370 ei_local->txing = 1;
1371 NS8390_trigger_send(dev, ei_local->tx2, ei_local->tx_start_page + 6);
1372 dev->trans_start = jiffies;
1374 ei_local->lasttx = 2;
1376 else ei_local->lasttx = 20, ei_local->txing = 0;
1378 else if (ei_local->tx2 < 0)
1380 if (ei_local->lasttx != 2 && ei_local->lasttx != -2)
1381 printk("%s: bogus last_tx_buffer %d, tx2=%d.\n",
1382 ei_local->name, ei_local->lasttx, ei_local->tx2);
1384 if (ei_local->tx1 > 0)
1386 ei_local->txing = 1;
1387 NS8390_trigger_send(dev, ei_local->tx1, ei_local->tx_start_page);
1388 dev->trans_start = jiffies;
1390 ei_local->lasttx = 1;
1393 ei_local->lasttx = 10, ei_local->txing = 0;
1395 // else printk(KERN_WARNING "%s: unexpected TX-done interrupt, lasttx=%d.\n",
1396 // dev->name, ei_local->lasttx);
1398 /* Minimize Tx latency: update the statistics after we restart TXing. */
1399 if (status & ENTSR_COL)
1400 ei_local->stat.collisions++;
1401 if (status & ENTSR_PTX)
1402 ei_local->stat.tx_packets++;
1405 ei_local->stat.tx_errors++;
1406 if (status & ENTSR_ABT)
1408 ei_local->stat.tx_aborted_errors++;
1409 ei_local->stat.collisions += 16;
1411 if (status & ENTSR_CRS)
1412 ei_local->stat.tx_carrier_errors++;
1413 if (status & ENTSR_FU)
1414 ei_local->stat.tx_fifo_errors++;
1415 if (status & ENTSR_CDH)
1416 ei_local->stat.tx_heartbeat_errors++;
1417 if (status & ENTSR_OWC)
1418 ei_local->stat.tx_window_errors++;
1420 netif_wake_queue(dev);
1424 * ei_receive - receive some packets
1425 * @dev: network device with which receive will be run
1427 * We have a good packet(s), get it/them out of the buffers.
1428 * Called with lock held.
1431 static void ei_receive(struct net_device *dev)
1433 long e8390_base = dev->base_addr;
1434 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1435 unsigned char rxing_page, this_frame, next_frame;
1436 unsigned short current_offset;
1437 int rx_pkt_count = 0;
1438 struct e8390_pkt_hdr rx_frame;
1440 while (++rx_pkt_count < 10)
1442 int pkt_len, pkt_stat;
1444 /* Get the rx page (incoming packet pointer). */
1445 rxing_page = inb_p(e8390_base + EN1_CURPAG -1);
1447 /* Remove one frame from the ring. Boundary is always a page behind. */
1448 this_frame = inb_p(e8390_base + EN0_BOUNDARY) + 1;
1449 if (this_frame >= ei_local->stop_page)
1450 this_frame = ei_local->rx_start_page;
1452 /* Someday we'll omit the previous, iff we never get this message.
1453 (There is at least one clone claimed to have a problem.)
1455 Keep quiet if it looks like a card removal. One problem here
1456 is that some clones crash in roughly the same way.
1458 if (ei_debug > 0 && this_frame != ei_local->current_page && (this_frame!=0x0 || rxing_page!=0xFF))
1459 printk(KERN_ERR "%s: mismatched read page pointers %2x vs %2x.\n",
1460 dev->name, this_frame, ei_local->current_page);
1462 if (this_frame == rxing_page) /* Read all the frames? */
1463 break; /* Done for now */
1465 current_offset = this_frame << 8;
1466 ei_get_8390_hdr(dev, &rx_frame, this_frame);
1468 pkt_len = rx_frame.count - sizeof(struct e8390_pkt_hdr);
1469 pkt_stat = rx_frame.status;
1471 next_frame = this_frame + 1 + ((pkt_len+4)>>8);
1473 if (pkt_len < 60 || pkt_len > 1518)
1476 printk(KERN_DEBUG "%s: bogus packet size: %d, status=%#2x nxpg=%#2x.\n",
1477 dev->name, rx_frame.count, rx_frame.status,
1479 ei_local->stat.rx_errors++;
1480 ei_local->stat.rx_length_errors++;
1482 else if ((pkt_stat & 0x0F) == ENRSR_RXOK)
1484 struct sk_buff *skb;
1486 skb = dev_alloc_skb(pkt_len+2);
1490 printk(KERN_DEBUG "%s: Couldn't allocate a sk_buff of size %d.\n",
1491 dev->name, pkt_len);
1492 ei_local->stat.rx_dropped++;
1497 skb_reserve(skb,2); /* IP headers on 16 byte boundaries */
1498 skb_put(skb, pkt_len); /* Make room */
1499 ei_block_input(dev, pkt_len, skb, current_offset + sizeof(rx_frame));
1500 skb->protocol=eth_type_trans(skb,dev);
1502 dev->last_rx = jiffies;
1503 ei_local->stat.rx_packets++;
1504 ei_local->stat.rx_bytes += pkt_len;
1505 if (pkt_stat & ENRSR_PHY)
1506 ei_local->stat.multicast++;
1512 printk(KERN_DEBUG "%s: bogus packet: status=%#2x nxpg=%#2x size=%d\n",
1513 dev->name, rx_frame.status, rx_frame.next,
1515 ei_local->stat.rx_errors++;
1516 /* NB: The NIC counts CRC, frame and missed errors. */
1517 if (pkt_stat & ENRSR_FO)
1518 ei_local->stat.rx_fifo_errors++;
1520 next_frame = rx_frame.next;
1522 /* This _should_ never happen: it's here for avoiding bad clones. */
1523 if (next_frame >= ei_local->stop_page) {
1524 printk("%s: next frame inconsistency, %#2x\n", dev->name,
1526 next_frame = ei_local->rx_start_page;
1528 ei_local->current_page = next_frame;
1529 outb_p(next_frame-1, e8390_base+EN0_BOUNDARY);
1536 * ei_rx_overrun - handle receiver overrun
1537 * @dev: network device which threw exception
1539 * We have a receiver overrun: we have to kick the 8390 to get it started
1540 * again. Problem is that you have to kick it exactly as NS prescribes in
1541 * the updated datasheets, or "the NIC may act in an unpredictable manner."
1542 * This includes causing "the NIC to defer indefinitely when it is stopped
1543 * on a busy network." Ugh.
1544 * Called with lock held. Don't call this with the interrupts off or your
1545 * computer will hate you - it takes 10ms or so.
1548 static void ei_rx_overrun(struct net_device *dev)
1550 axnet_dev_t *info = PRIV(dev);
1551 long e8390_base = dev->base_addr;
1552 unsigned char was_txing, must_resend = 0;
1553 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1556 * Record whether a Tx was in progress and then issue the
1559 was_txing = inb_p(e8390_base+E8390_CMD) & E8390_TRANS;
1560 outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD);
1563 printk(KERN_DEBUG "%s: Receiver overrun.\n", dev->name);
1564 ei_local->stat.rx_over_errors++;
1567 * Wait a full Tx time (1.2ms) + some guard time, NS says 1.6ms total.
1568 * Early datasheets said to poll the reset bit, but now they say that
1569 * it "is not a reliable indicator and subsequently should be ignored."
1570 * We wait at least 10ms.
1576 * Reset RBCR[01] back to zero as per magic incantation.
1578 outb_p(0x00, e8390_base+EN0_RCNTLO);
1579 outb_p(0x00, e8390_base+EN0_RCNTHI);
1582 * See if any Tx was interrupted or not. According to NS, this
1583 * step is vital, and skipping it will cause no end of havoc.
1588 unsigned char tx_completed = inb_p(e8390_base+EN0_ISR) & (ENISR_TX+ENISR_TX_ERR);
1594 * Have to enter loopback mode and then restart the NIC before
1595 * you are allowed to slurp packets up off the ring.
1597 outb_p(E8390_TXOFF, e8390_base + EN0_TXCR);
1598 outb_p(E8390_NODMA + E8390_PAGE0 + E8390_START, e8390_base + E8390_CMD);
1601 * Clear the Rx ring of all the debris, and ack the interrupt.
1606 * Leave loopback mode, and resend any packet that got stopped.
1608 outb_p(E8390_TXCONFIG | info->duplex_flag, e8390_base + EN0_TXCR);
1610 outb_p(E8390_NODMA + E8390_PAGE0 + E8390_START + E8390_TRANS, e8390_base + E8390_CMD);
1614 * Collect the stats. This is called unlocked and from several contexts.
1617 static struct net_device_stats *get_stats(struct net_device *dev)
1619 long ioaddr = dev->base_addr;
1620 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1621 unsigned long flags;
1623 /* If the card is stopped, just return the present stats. */
1624 if (!netif_running(dev))
1625 return &ei_local->stat;
1627 spin_lock_irqsave(&ei_local->page_lock,flags);
1628 /* Read the counter registers, assuming we are in page 0. */
1629 ei_local->stat.rx_frame_errors += inb_p(ioaddr + EN0_COUNTER0);
1630 ei_local->stat.rx_crc_errors += inb_p(ioaddr + EN0_COUNTER1);
1631 ei_local->stat.rx_missed_errors+= inb_p(ioaddr + EN0_COUNTER2);
1632 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1634 return &ei_local->stat;
1638 * Form the 64 bit 8390 multicast table from the linked list of addresses
1639 * associated with this dev structure.
1642 static inline void make_mc_bits(u8 *bits, struct net_device *dev)
1644 struct dev_mc_list *dmi;
1647 for (dmi=dev->mc_list; dmi; dmi=dmi->next) {
1649 crc = ether_crc(ETH_ALEN, dmi->dmi_addr);
1651 * The 8390 uses the 6 most significant bits of the
1652 * CRC to index the multicast table.
1654 bits[crc>>29] |= (1<<((crc>>26)&7));
1659 * do_set_multicast_list - set/clear multicast filter
1660 * @dev: net device for which multicast filter is adjusted
1662 * Set or clear the multicast filter for this adaptor.
1663 * Must be called with lock held.
1666 static void do_set_multicast_list(struct net_device *dev)
1668 long e8390_base = dev->base_addr;
1670 struct ei_device *ei_local = (struct ei_device*)netdev_priv(dev);
1672 if (!(dev->flags&(IFF_PROMISC|IFF_ALLMULTI))) {
1673 memset(ei_local->mcfilter, 0, 8);
1675 make_mc_bits(ei_local->mcfilter, dev);
1677 /* set to accept-all */
1678 memset(ei_local->mcfilter, 0xFF, 8);
1681 outb_p(E8390_NODMA + E8390_PAGE1, e8390_base + E8390_CMD);
1682 for(i = 0; i < 8; i++)
1684 outb_p(ei_local->mcfilter[i], e8390_base + EN1_MULT_SHIFT(i));
1686 outb_p(E8390_NODMA + E8390_PAGE0, e8390_base + E8390_CMD);
1688 if(dev->flags&IFF_PROMISC)
1689 outb_p(E8390_RXCONFIG | 0x58, e8390_base + EN0_RXCR);
1690 else if(dev->flags&IFF_ALLMULTI || dev->mc_list)
1691 outb_p(E8390_RXCONFIG | 0x48, e8390_base + EN0_RXCR);
1693 outb_p(E8390_RXCONFIG | 0x40, e8390_base + EN0_RXCR);
1695 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, e8390_base+E8390_CMD);
1699 * Called without lock held. This is invoked from user context and may
1700 * be parallel to just about everything else. Its also fairly quick and
1701 * not called too often. Must protect against both bh and irq users
1704 static void set_multicast_list(struct net_device *dev)
1706 unsigned long flags;
1708 spin_lock_irqsave(&dev_lock(dev), flags);
1709 do_set_multicast_list(dev);
1710 spin_unlock_irqrestore(&dev_lock(dev), flags);
1714 * axdev_setup - init rest of 8390 device struct
1715 * @dev: network device structure to init
1717 * Initialize the rest of the 8390 device structure. Do NOT __init
1718 * this, as it is used by 8390 based modular drivers too.
1721 static void axdev_setup(struct net_device *dev)
1723 struct ei_device *ei_local;
1725 printk(version_8390);
1727 ei_local = (struct ei_device *)netdev_priv(dev);
1728 spin_lock_init(&ei_local->page_lock);
1730 dev->hard_start_xmit = &ei_start_xmit;
1731 dev->get_stats = get_stats;
1732 dev->set_multicast_list = &set_multicast_list;
1737 /* This page of functions should be 8390 generic */
1738 /* Follow National Semi's recommendations for initializing the "NIC". */
1741 * AX88190_init - initialize 8390 hardware
1742 * @dev: network device to initialize
1743 * @startp: boolean. non-zero value to initiate chip processing
1745 * Must be called with lock held.
1748 static void AX88190_init(struct net_device *dev, int startp)
1750 axnet_dev_t *info = PRIV(dev);
1751 long e8390_base = dev->base_addr;
1752 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1754 int endcfg = ei_local->word16 ? (0x48 | ENDCFG_WTS) : 0x48;
1756 if(sizeof(struct e8390_pkt_hdr)!=4)
1757 panic("8390.c: header struct mispacked\n");
1758 /* Follow National Semi's recommendations for initing the DP83902. */
1759 outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD); /* 0x21 */
1760 outb_p(endcfg, e8390_base + EN0_DCFG); /* 0x48 or 0x49 */
1761 /* Clear the remote byte count registers. */
1762 outb_p(0x00, e8390_base + EN0_RCNTLO);
1763 outb_p(0x00, e8390_base + EN0_RCNTHI);
1764 /* Set to monitor and loopback mode -- this is vital!. */
1765 outb_p(E8390_RXOFF|0x40, e8390_base + EN0_RXCR); /* 0x60 */
1766 outb_p(E8390_TXOFF, e8390_base + EN0_TXCR); /* 0x02 */
1767 /* Set the transmit page and receive ring. */
1768 outb_p(ei_local->tx_start_page, e8390_base + EN0_TPSR);
1769 ei_local->tx1 = ei_local->tx2 = 0;
1770 outb_p(ei_local->rx_start_page, e8390_base + EN0_STARTPG);
1771 outb_p(ei_local->stop_page-1, e8390_base + EN0_BOUNDARY); /* 3c503 says 0x3f,NS0x26*/
1772 ei_local->current_page = ei_local->rx_start_page; /* assert boundary+1 */
1773 outb_p(ei_local->stop_page, e8390_base + EN0_STOPPG);
1774 /* Clear the pending interrupts and mask. */
1775 outb_p(0xFF, e8390_base + EN0_ISR);
1776 outb_p(0x00, e8390_base + EN0_IMR);
1778 /* Copy the station address into the DS8390 registers. */
1780 outb_p(E8390_NODMA + E8390_PAGE1 + E8390_STOP, e8390_base+E8390_CMD); /* 0x61 */
1781 for(i = 0; i < 6; i++)
1783 outb_p(dev->dev_addr[i], e8390_base + EN1_PHYS_SHIFT(i));
1784 if(inb_p(e8390_base + EN1_PHYS_SHIFT(i))!=dev->dev_addr[i])
1785 printk(KERN_ERR "Hw. address read/write mismap %d\n",i);
1788 outb_p(ei_local->rx_start_page, e8390_base + EN1_CURPAG);
1789 outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD);
1791 netif_start_queue(dev);
1792 ei_local->tx1 = ei_local->tx2 = 0;
1793 ei_local->txing = 0;
1797 outb_p(0xff, e8390_base + EN0_ISR);
1798 outb_p(ENISR_ALL, e8390_base + EN0_IMR);
1799 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, e8390_base+E8390_CMD);
1800 outb_p(E8390_TXCONFIG | info->duplex_flag,
1801 e8390_base + EN0_TXCR); /* xmit on. */
1802 /* 3c503 TechMan says rxconfig only after the NIC is started. */
1803 outb_p(E8390_RXCONFIG | 0x40, e8390_base + EN0_RXCR); /* rx on, */
1804 do_set_multicast_list(dev); /* (re)load the mcast table */
1808 /* Trigger a transmit start, assuming the length is valid.
1809 Always called with the page lock held */
1811 static void NS8390_trigger_send(struct net_device *dev, unsigned int length,
1814 long e8390_base = dev->base_addr;
1815 struct ei_device *ei_local __attribute((unused)) = (struct ei_device *) netdev_priv(dev);
1817 if (inb_p(e8390_base) & E8390_TRANS)
1819 printk(KERN_WARNING "%s: trigger_send() called with the transmitter busy.\n",
1823 outb_p(length & 0xff, e8390_base + EN0_TCNTLO);
1824 outb_p(length >> 8, e8390_base + EN0_TCNTHI);
1825 outb_p(start_page, e8390_base + EN0_TPSR);
1826 outb_p(E8390_NODMA+E8390_TRANS+E8390_START, e8390_base+E8390_CMD);