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_EXCLUSIVE;
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 < sizeof(program_seq)/sizeof(program_seq[0]); 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;
296 DEBUG(0, "axnet_config(0x%p)\n", link);
298 tuple.Attributes = 0;
299 tuple.TupleData = (cisdata_t *)buf;
300 tuple.TupleDataMax = sizeof(buf);
301 tuple.TupleOffset = 0;
303 /* don't trust the CIS on this; Linksys got it wrong */
304 link->conf.Present = 0x63;
306 tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
307 tuple.Attributes = 0;
308 CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(link, &tuple));
309 while (last_ret == CS_SUCCESS) {
310 cistpl_cftable_entry_t *cfg = &(parse.cftable_entry);
311 cistpl_io_t *io = &(parse.cftable_entry.io);
313 if (pcmcia_get_tuple_data(link, &tuple) != 0 ||
314 pcmcia_parse_tuple(link, &tuple, &parse) != 0 ||
315 cfg->index == 0 || cfg->io.nwin == 0)
318 link->conf.ConfigIndex = 0x05;
319 /* For multifunction cards, by convention, we configure the
320 network function with window 0, and serial with window 1 */
322 i = (io->win[1].len > io->win[0].len);
323 link->io.BasePort2 = io->win[1-i].base;
324 link->io.NumPorts2 = io->win[1-i].len;
326 i = link->io.NumPorts2 = 0;
328 link->io.BasePort1 = io->win[i].base;
329 link->io.NumPorts1 = io->win[i].len;
330 link->io.IOAddrLines = io->flags & CISTPL_IO_LINES_MASK;
331 if (link->io.NumPorts1 + link->io.NumPorts2 >= 32) {
332 last_ret = try_io_port(link);
333 if (last_ret == CS_SUCCESS) break;
336 last_ret = pcmcia_get_next_tuple(link, &tuple);
338 if (last_ret != CS_SUCCESS) {
339 cs_error(link, RequestIO, last_ret);
343 CS_CHECK(RequestIRQ, pcmcia_request_irq(link, &link->irq));
345 if (link->io.NumPorts2 == 8) {
346 link->conf.Attributes |= CONF_ENABLE_SPKR;
347 link->conf.Status = CCSR_AUDIO_ENA;
350 CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link, &link->conf));
351 dev->irq = link->irq.AssignedIRQ;
352 dev->base_addr = link->io.BasePort1;
354 if (!get_prom(link)) {
355 printk(KERN_NOTICE "axnet_cs: this is not an AX88190 card!\n");
356 printk(KERN_NOTICE "axnet_cs: use pcnet_cs instead.\n");
360 ei_status.name = "AX88190";
361 ei_status.word16 = 1;
362 ei_status.tx_start_page = AXNET_START_PG;
363 ei_status.rx_start_page = AXNET_START_PG + TX_PAGES;
364 ei_status.stop_page = AXNET_STOP_PG;
365 ei_status.reset_8390 = &axnet_reset_8390;
366 ei_status.get_8390_hdr = &get_8390_hdr;
367 ei_status.block_input = &block_input;
368 ei_status.block_output = &block_output;
370 if (inb(dev->base_addr + AXNET_TEST) != 0)
371 info->flags |= IS_AX88790;
373 info->flags |= IS_AX88190;
375 if (info->flags & IS_AX88790)
376 outb(0x10, dev->base_addr + AXNET_GPIO); /* select Internal PHY */
378 for (i = 0; i < 32; i++) {
379 j = mdio_read(dev->base_addr + AXNET_MII_EEP, i, 1);
380 if ((j != 0) && (j != 0xffff)) break;
383 /* Maybe PHY is in power down mode. (PPD_SET = 1)
384 Bit 2 of CCSR is active low. */
386 conf_reg_t reg = { 0, CS_WRITE, CISREG_CCSR, 0x04 };
387 pcmcia_access_configuration_register(link, ®);
388 for (i = 0; i < 32; i++) {
389 j = mdio_read(dev->base_addr + AXNET_MII_EEP, i, 1);
390 if ((j != 0) && (j != 0xffff)) break;
394 info->phy_id = (i < 32) ? i : -1;
395 link->dev_node = &info->node;
396 SET_NETDEV_DEV(dev, &handle_to_dev(link));
398 if (register_netdev(dev) != 0) {
399 printk(KERN_NOTICE "axnet_cs: register_netdev() failed\n");
400 link->dev_node = NULL;
404 strcpy(info->node.dev_name, dev->name);
406 printk(KERN_INFO "%s: Asix AX88%d90: io %#3lx, irq %d, hw_addr ",
407 dev->name, ((info->flags & IS_AX88790) ? 7 : 1),
408 dev->base_addr, dev->irq);
409 for (i = 0; i < 6; i++)
410 printk("%02X%s", dev->dev_addr[i], ((i<5) ? ":" : "\n"));
411 if (info->phy_id != -1) {
412 DEBUG(0, " MII transceiver at index %d, status %x.\n", info->phy_id, j);
414 printk(KERN_NOTICE " No MII transceivers found!\n");
419 cs_error(link, last_fn, last_ret);
425 /*======================================================================
427 After a card is removed, axnet_release() will unregister the net
428 device, and release the PCMCIA configuration. If the device is
429 still open, this will be postponed until it is closed.
431 ======================================================================*/
433 static void axnet_release(struct pcmcia_device *link)
435 pcmcia_disable_device(link);
438 static int axnet_suspend(struct pcmcia_device *link)
440 struct net_device *dev = link->priv;
443 netif_device_detach(dev);
448 static int axnet_resume(struct pcmcia_device *link)
450 struct net_device *dev = link->priv;
453 axnet_reset_8390(dev);
454 AX88190_init(dev, 1);
455 netif_device_attach(dev);
462 /*======================================================================
464 MII interface support
466 ======================================================================*/
468 #define MDIO_SHIFT_CLK 0x01
469 #define MDIO_DATA_WRITE0 0x00
470 #define MDIO_DATA_WRITE1 0x08
471 #define MDIO_DATA_READ 0x04
472 #define MDIO_MASK 0x0f
473 #define MDIO_ENB_IN 0x02
475 static void mdio_sync(kio_addr_t addr)
478 for (bits = 0; bits < 32; bits++) {
479 outb_p(MDIO_DATA_WRITE1, addr);
480 outb_p(MDIO_DATA_WRITE1 | MDIO_SHIFT_CLK, addr);
484 static int mdio_read(kio_addr_t addr, int phy_id, int loc)
486 u_int cmd = (0xf6<<10)|(phy_id<<5)|loc;
490 for (i = 14; i >= 0; i--) {
491 int dat = (cmd&(1<<i)) ? MDIO_DATA_WRITE1 : MDIO_DATA_WRITE0;
493 outb_p(dat | MDIO_SHIFT_CLK, addr);
495 for (i = 19; i > 0; i--) {
496 outb_p(MDIO_ENB_IN, addr);
497 retval = (retval << 1) | ((inb_p(addr) & MDIO_DATA_READ) != 0);
498 outb_p(MDIO_ENB_IN | MDIO_SHIFT_CLK, addr);
500 return (retval>>1) & 0xffff;
503 static void mdio_write(kio_addr_t addr, int phy_id, int loc, int value)
505 u_int cmd = (0x05<<28)|(phy_id<<23)|(loc<<18)|(1<<17)|value;
509 for (i = 31; i >= 0; i--) {
510 int dat = (cmd&(1<<i)) ? MDIO_DATA_WRITE1 : MDIO_DATA_WRITE0;
512 outb_p(dat | MDIO_SHIFT_CLK, addr);
514 for (i = 1; i >= 0; i--) {
515 outb_p(MDIO_ENB_IN, addr);
516 outb_p(MDIO_ENB_IN | MDIO_SHIFT_CLK, addr);
520 /*====================================================================*/
522 static int axnet_open(struct net_device *dev)
525 axnet_dev_t *info = PRIV(dev);
526 struct pcmcia_device *link = info->p_dev;
528 DEBUG(2, "axnet_open('%s')\n", dev->name);
530 if (!pcmcia_dev_present(link))
533 ret = request_irq(dev->irq, ei_irq_wrapper, IRQF_SHARED, "axnet_cs", dev);
539 info->link_status = 0x00;
540 init_timer(&info->watchdog);
541 info->watchdog.function = &ei_watchdog;
542 info->watchdog.data = (u_long)dev;
543 info->watchdog.expires = jiffies + HZ;
544 add_timer(&info->watchdog);
549 /*====================================================================*/
551 static int axnet_close(struct net_device *dev)
553 axnet_dev_t *info = PRIV(dev);
554 struct pcmcia_device *link = info->p_dev;
556 DEBUG(2, "axnet_close('%s')\n", dev->name);
559 free_irq(dev->irq, dev);
562 netif_stop_queue(dev);
563 del_timer_sync(&info->watchdog);
568 /*======================================================================
570 Hard reset the card. This used to pause for the same period that
571 a 8390 reset command required, but that shouldn't be necessary.
573 ======================================================================*/
575 static void axnet_reset_8390(struct net_device *dev)
577 kio_addr_t nic_base = dev->base_addr;
580 ei_status.txing = ei_status.dmaing = 0;
582 outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, nic_base + E8390_CMD);
584 outb(inb(nic_base + AXNET_RESET), nic_base + AXNET_RESET);
586 for (i = 0; i < 100; i++) {
587 if ((inb_p(nic_base+EN0_ISR) & ENISR_RESET) != 0)
591 outb_p(ENISR_RESET, nic_base + EN0_ISR); /* Ack intr. */
594 printk(KERN_ERR "%s: axnet_reset_8390() did not complete.\n",
597 } /* axnet_reset_8390 */
599 /*====================================================================*/
601 static irqreturn_t ei_irq_wrapper(int irq, void *dev_id)
603 struct net_device *dev = dev_id;
604 PRIV(dev)->stale = 0;
605 return ax_interrupt(irq, dev_id);
608 static void ei_watchdog(u_long arg)
610 struct net_device *dev = (struct net_device *)(arg);
611 axnet_dev_t *info = PRIV(dev);
612 kio_addr_t nic_base = dev->base_addr;
613 kio_addr_t mii_addr = nic_base + AXNET_MII_EEP;
616 if (!netif_device_present(dev)) goto reschedule;
618 /* Check for pending interrupt with expired latency timer: with
619 this, we can limp along even if the interrupt is blocked */
620 if (info->stale++ && (inb_p(nic_base + EN0_ISR) & ENISR_ALL)) {
621 if (!info->fast_poll)
622 printk(KERN_INFO "%s: interrupt(s) dropped!\n", dev->name);
623 ei_irq_wrapper(dev->irq, dev);
624 info->fast_poll = HZ;
626 if (info->fast_poll) {
628 info->watchdog.expires = jiffies + 1;
629 add_timer(&info->watchdog);
633 if (info->phy_id < 0)
635 link = mdio_read(mii_addr, info->phy_id, 1);
636 if (!link || (link == 0xffff)) {
637 printk(KERN_INFO "%s: MII is missing!\n", dev->name);
643 if (link != info->link_status) {
644 u_short p = mdio_read(mii_addr, info->phy_id, 5);
645 printk(KERN_INFO "%s: %s link beat\n", dev->name,
646 (link) ? "found" : "lost");
648 info->duplex_flag = (p & 0x0140) ? 0x80 : 0x00;
650 printk(KERN_INFO "%s: autonegotiation complete: "
651 "%sbaseT-%cD selected\n", dev->name,
652 ((p & 0x0180) ? "100" : "10"),
653 ((p & 0x0140) ? 'F' : 'H'));
655 printk(KERN_INFO "%s: link partner did not autonegotiate\n",
657 AX88190_init(dev, 1);
659 info->link_status = link;
663 info->watchdog.expires = jiffies + HZ;
664 add_timer(&info->watchdog);
667 static void netdev_get_drvinfo(struct net_device *dev,
668 struct ethtool_drvinfo *info)
670 strcpy(info->driver, "axnet_cs");
673 static const struct ethtool_ops netdev_ethtool_ops = {
674 .get_drvinfo = netdev_get_drvinfo,
677 /*====================================================================*/
679 static int axnet_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
681 axnet_dev_t *info = PRIV(dev);
682 u16 *data = (u16 *)&rq->ifr_ifru;
683 kio_addr_t mii_addr = dev->base_addr + AXNET_MII_EEP;
686 data[0] = info->phy_id;
687 case SIOCGMIIREG: /* Read MII PHY register. */
688 data[3] = mdio_read(mii_addr, data[0], data[1] & 0x1f);
690 case SIOCSMIIREG: /* Write MII PHY register. */
691 if (!capable(CAP_NET_ADMIN))
693 mdio_write(mii_addr, data[0], data[1] & 0x1f, data[2]);
699 /*====================================================================*/
701 static void get_8390_hdr(struct net_device *dev,
702 struct e8390_pkt_hdr *hdr,
705 kio_addr_t nic_base = dev->base_addr;
707 outb_p(0, nic_base + EN0_RSARLO); /* On page boundary */
708 outb_p(ring_page, nic_base + EN0_RSARHI);
709 outb_p(E8390_RREAD+E8390_START, nic_base + AXNET_CMD);
711 insw(nic_base + AXNET_DATAPORT, hdr,
712 sizeof(struct e8390_pkt_hdr)>>1);
713 /* Fix for big endian systems */
714 hdr->count = le16_to_cpu(hdr->count);
718 /*====================================================================*/
720 static void block_input(struct net_device *dev, int count,
721 struct sk_buff *skb, int ring_offset)
723 kio_addr_t nic_base = dev->base_addr;
724 int xfer_count = count;
725 char *buf = skb->data;
728 if ((ei_debug > 4) && (count != 4))
729 printk(KERN_DEBUG "%s: [bi=%d]\n", dev->name, count+4);
731 outb_p(ring_offset & 0xff, nic_base + EN0_RSARLO);
732 outb_p(ring_offset >> 8, nic_base + EN0_RSARHI);
733 outb_p(E8390_RREAD+E8390_START, nic_base + AXNET_CMD);
735 insw(nic_base + AXNET_DATAPORT,buf,count>>1);
737 buf[count-1] = inb(nic_base + AXNET_DATAPORT), xfer_count++;
741 /*====================================================================*/
743 static void block_output(struct net_device *dev, int count,
744 const u_char *buf, const int start_page)
746 kio_addr_t nic_base = dev->base_addr;
750 printk(KERN_DEBUG "%s: [bo=%d]\n", dev->name, count);
753 /* Round the count up for word writes. Do we need to do this?
754 What effect will an odd byte count have on the 8390?
755 I should check someday. */
759 outb_p(0x00, nic_base + EN0_RSARLO);
760 outb_p(start_page, nic_base + EN0_RSARHI);
761 outb_p(E8390_RWRITE+E8390_START, nic_base + AXNET_CMD);
762 outsw(nic_base + AXNET_DATAPORT, buf, count>>1);
765 static struct pcmcia_device_id axnet_ids[] = {
766 PCMCIA_PFC_DEVICE_MANF_CARD(0, 0x016c, 0x0081),
767 PCMCIA_DEVICE_MANF_CARD(0x018a, 0x0301),
768 PCMCIA_DEVICE_MANF_CARD(0x026f, 0x0301),
769 PCMCIA_DEVICE_MANF_CARD(0x026f, 0x0303),
770 PCMCIA_DEVICE_MANF_CARD(0x026f, 0x0309),
771 PCMCIA_DEVICE_MANF_CARD(0x0274, 0x1106),
772 PCMCIA_DEVICE_MANF_CARD(0x8a01, 0xc1ab),
773 PCMCIA_DEVICE_MANF_CARD(0x021b, 0x0202),
774 PCMCIA_DEVICE_PROD_ID12("AmbiCom,Inc.", "Fast Ethernet PC Card(AMB8110)", 0x49b020a7, 0x119cc9fc),
775 PCMCIA_DEVICE_PROD_ID124("Fast Ethernet", "16-bit PC Card", "AX88190", 0xb4be14e3, 0x9a12eb6a, 0xab9be5ef),
776 PCMCIA_DEVICE_PROD_ID12("ASIX", "AX88190", 0x0959823b, 0xab9be5ef),
777 PCMCIA_DEVICE_PROD_ID12("Billionton", "LNA-100B", 0x552ab682, 0xbc3b87e1),
778 PCMCIA_DEVICE_PROD_ID12("CHEETAH ETHERCARD", "EN2228", 0x00fa7bc8, 0x00e990cc),
779 PCMCIA_DEVICE_PROD_ID12("CNet", "CNF301", 0xbc477dde, 0x78c5f40b),
780 PCMCIA_DEVICE_PROD_ID12("corega K.K.", "corega FEther PCC-TXD", 0x5261440f, 0x436768c5),
781 PCMCIA_DEVICE_PROD_ID12("corega K.K.", "corega FEtherII PCC-TXD", 0x5261440f, 0x730df72e),
782 PCMCIA_DEVICE_PROD_ID12("Dynalink", "L100C16", 0x55632fd5, 0x66bc2a90),
783 PCMCIA_DEVICE_PROD_ID12("Linksys", "EtherFast 10/100 PC Card (PCMPC100 V3)", 0x0733cc81, 0x232019a8),
784 PCMCIA_DEVICE_PROD_ID12("MELCO", "LPC3-TX", 0x481e0094, 0xf91af609),
785 PCMCIA_DEVICE_PROD_ID12("PCMCIA", "100BASE", 0x281f1c5d, 0x7c2add04),
786 PCMCIA_DEVICE_PROD_ID12("PCMCIA", "FastEtherCard", 0x281f1c5d, 0x7ef26116),
787 PCMCIA_DEVICE_PROD_ID12("PCMCIA", "FEP501", 0x281f1c5d, 0x2e272058),
788 PCMCIA_DEVICE_PROD_ID14("Network Everywhere", "AX88190", 0x820a67b6, 0xab9be5ef),
791 MODULE_DEVICE_TABLE(pcmcia, axnet_ids);
793 static struct pcmcia_driver axnet_cs_driver = {
794 .owner = THIS_MODULE,
798 .probe = axnet_probe,
799 .remove = axnet_detach,
800 .id_table = axnet_ids,
801 .suspend = axnet_suspend,
802 .resume = axnet_resume,
805 static int __init init_axnet_cs(void)
807 return pcmcia_register_driver(&axnet_cs_driver);
810 static void __exit exit_axnet_cs(void)
812 pcmcia_unregister_driver(&axnet_cs_driver);
815 module_init(init_axnet_cs);
816 module_exit(exit_axnet_cs);
818 /*====================================================================*/
820 /* 8390.c: A general NS8390 ethernet driver core for linux. */
822 Written 1992-94 by Donald Becker.
824 Copyright 1993 United States Government as represented by the
825 Director, National Security Agency.
827 This software may be used and distributed according to the terms
828 of the GNU General Public License, incorporated herein by reference.
830 The author may be reached as becker@scyld.com, or C/O
831 Scyld Computing Corporation
832 410 Severn Ave., Suite 210
835 This is the chip-specific code for many 8390-based ethernet adaptors.
836 This is not a complete driver, it must be combined with board-specific
837 code such as ne.c, wd.c, 3c503.c, etc.
839 Seeing how at least eight drivers use this code, (not counting the
840 PCMCIA ones either) it is easy to break some card by what seems like
841 a simple innocent change. Please contact me or Donald if you think
842 you have found something that needs changing. -- PG
846 Paul Gortmaker : remove set_bit lock, other cleanups.
847 Paul Gortmaker : add ei_get_8390_hdr() so we can pass skb's to
848 ei_block_input() for eth_io_copy_and_sum().
849 Paul Gortmaker : exchange static int ei_pingpong for a #define,
850 also add better Tx error handling.
851 Paul Gortmaker : rewrite Rx overrun handling as per NS specs.
852 Alexey Kuznetsov : use the 8390's six bit hash multicast filter.
853 Paul Gortmaker : tweak ANK's above multicast changes a bit.
854 Paul Gortmaker : update packet statistics for v2.1.x
855 Alan Cox : support arbitary stupid port mappings on the
856 68K Macintosh. Support >16bit I/O spaces
857 Paul Gortmaker : add kmod support for auto-loading of the 8390
858 module by all drivers that require it.
859 Alan Cox : Spinlocking work, added 'BUG_83C690'
860 Paul Gortmaker : Separate out Tx timeout code from Tx path.
863 The National Semiconductor LAN Databook, and the 3Com 3c503 databook.
867 static const char *version_8390 =
868 "8390.c:v1.10cvs 9/23/94 Donald Becker (becker@scyld.com)\n";
870 #include <linux/bitops.h>
872 #include <linux/fcntl.h>
873 #include <linux/in.h>
874 #include <linux/interrupt.h>
876 #include <linux/etherdevice.h>
880 /* These are the operational function interfaces to board-specific
882 void reset_8390(struct net_device *dev)
883 Resets the board associated with DEV, including a hardware reset of
884 the 8390. This is only called when there is a transmit timeout, and
885 it is always followed by 8390_init().
886 void block_output(struct net_device *dev, int count, const unsigned char *buf,
888 Write the COUNT bytes of BUF to the packet buffer at START_PAGE. The
889 "page" value uses the 8390's 256-byte pages.
890 void get_8390_hdr(struct net_device *dev, struct e8390_hdr *hdr, int ring_page)
891 Read the 4 byte, page aligned 8390 header. *If* there is a
892 subsequent read, it will be of the rest of the packet.
893 void block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset)
894 Read COUNT bytes from the packet buffer into the skb data area. Start
895 reading from RING_OFFSET, the address as the 8390 sees it. This will always
896 follow the read of the 8390 header.
898 #define ei_reset_8390 (ei_local->reset_8390)
899 #define ei_block_output (ei_local->block_output)
900 #define ei_block_input (ei_local->block_input)
901 #define ei_get_8390_hdr (ei_local->get_8390_hdr)
903 /* use 0 for production, 1 for verification, >2 for debug */
908 /* Index to functions. */
909 static void ei_tx_intr(struct net_device *dev);
910 static void ei_tx_err(struct net_device *dev);
911 static void ei_tx_timeout(struct net_device *dev);
912 static void ei_receive(struct net_device *dev);
913 static void ei_rx_overrun(struct net_device *dev);
915 /* Routines generic to NS8390-based boards. */
916 static void NS8390_trigger_send(struct net_device *dev, unsigned int length,
918 static void set_multicast_list(struct net_device *dev);
919 static void do_set_multicast_list(struct net_device *dev);
922 * SMP and the 8390 setup.
924 * The 8390 isnt exactly designed to be multithreaded on RX/TX. There is
925 * a page register that controls bank and packet buffer access. We guard
926 * this with ei_local->page_lock. Nobody should assume or set the page other
927 * than zero when the lock is not held. Lock holders must restore page 0
928 * before unlocking. Even pure readers must take the lock to protect in
931 * To make life difficult the chip can also be very slow. We therefore can't
932 * just use spinlocks. For the longer lockups we disable the irq the device
933 * sits on and hold the lock. We must hold the lock because there is a dual
934 * processor case other than interrupts (get stats/set multicast list in
935 * parallel with each other and transmit).
937 * Note: in theory we can just disable the irq on the card _but_ there is
938 * a latency on SMP irq delivery. So we can easily go "disable irq" "sync irqs"
939 * enter lock, take the queued irq. So we waddle instead of flying.
941 * Finally by special arrangement for the purpose of being generally
942 * annoying the transmit function is called bh atomic. That places
943 * restrictions on the user context callers as disable_irq won't save
948 * ax_open - Open/initialize the board.
949 * @dev: network device to initialize
951 * This routine goes all-out, setting everything
952 * up anew at each open, even though many of these registers should only
953 * need to be set once at boot.
955 static int ax_open(struct net_device *dev)
958 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
960 #ifdef HAVE_TX_TIMEOUT
961 /* The card I/O part of the driver (e.g. 3c503) can hook a Tx timeout
962 wrapper that does e.g. media check & then calls ei_tx_timeout. */
963 if (dev->tx_timeout == NULL)
964 dev->tx_timeout = ei_tx_timeout;
965 if (dev->watchdog_timeo <= 0)
966 dev->watchdog_timeo = TX_TIMEOUT;
970 * Grab the page lock so we own the register set, then call
974 spin_lock_irqsave(&ei_local->page_lock, flags);
975 AX88190_init(dev, 1);
976 /* Set the flag before we drop the lock, That way the IRQ arrives
977 after its set and we get no silly warnings */
978 netif_start_queue(dev);
979 spin_unlock_irqrestore(&ei_local->page_lock, flags);
980 ei_local->irqlock = 0;
984 #define dev_lock(dev) (((struct ei_device *)netdev_priv(dev))->page_lock)
987 * ax_close - shut down network device
988 * @dev: network device to close
990 * Opposite of ax_open(). Only used when "ifconfig <devname> down" is done.
992 int ax_close(struct net_device *dev)
997 * Hold the page lock during close
1000 spin_lock_irqsave(&dev_lock(dev), flags);
1001 AX88190_init(dev, 0);
1002 spin_unlock_irqrestore(&dev_lock(dev), flags);
1003 netif_stop_queue(dev);
1008 * ei_tx_timeout - handle transmit time out condition
1009 * @dev: network device which has apparently fallen asleep
1011 * Called by kernel when device never acknowledges a transmit has
1012 * completed (or failed) - i.e. never posted a Tx related interrupt.
1015 void ei_tx_timeout(struct net_device *dev)
1017 long e8390_base = dev->base_addr;
1018 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1019 int txsr, isr, tickssofar = jiffies - dev->trans_start;
1020 unsigned long flags;
1022 ei_local->stat.tx_errors++;
1024 spin_lock_irqsave(&ei_local->page_lock, flags);
1025 txsr = inb(e8390_base+EN0_TSR);
1026 isr = inb(e8390_base+EN0_ISR);
1027 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1029 printk(KERN_DEBUG "%s: Tx timed out, %s TSR=%#2x, ISR=%#2x, t=%d.\n",
1030 dev->name, (txsr & ENTSR_ABT) ? "excess collisions." :
1031 (isr) ? "lost interrupt?" : "cable problem?", txsr, isr, tickssofar);
1033 if (!isr && !ei_local->stat.tx_packets)
1035 /* The 8390 probably hasn't gotten on the cable yet. */
1036 ei_local->interface_num ^= 1; /* Try a different xcvr. */
1039 /* Ugly but a reset can be slow, yet must be protected */
1041 disable_irq_nosync(dev->irq);
1042 spin_lock(&ei_local->page_lock);
1044 /* Try to restart the card. Perhaps the user has fixed something. */
1046 AX88190_init(dev, 1);
1048 spin_unlock(&ei_local->page_lock);
1049 enable_irq(dev->irq);
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 disable_irq_nosync(dev->irq);
1088 spin_lock(&ei_local->page_lock);
1090 ei_local->irqlock = 1;
1092 send_length = ETH_ZLEN < length ? length : ETH_ZLEN;
1095 * We have two Tx slots available for use. Find the first free
1096 * slot, and then perform some sanity checks. With two Tx bufs,
1097 * you get very close to transmitting back-to-back packets. With
1098 * only one Tx buf, the transmitter sits idle while you reload the
1099 * card, leaving a substantial gap between each transmitted packet.
1102 if (ei_local->tx1 == 0)
1104 output_page = ei_local->tx_start_page;
1105 ei_local->tx1 = send_length;
1106 if (ei_debug && ei_local->tx2 > 0)
1107 printk(KERN_DEBUG "%s: idle transmitter tx2=%d, lasttx=%d, txing=%d.\n",
1108 dev->name, ei_local->tx2, ei_local->lasttx, ei_local->txing);
1110 else if (ei_local->tx2 == 0)
1112 output_page = ei_local->tx_start_page + TX_PAGES/2;
1113 ei_local->tx2 = send_length;
1114 if (ei_debug && ei_local->tx1 > 0)
1115 printk(KERN_DEBUG "%s: idle transmitter, tx1=%d, lasttx=%d, txing=%d.\n",
1116 dev->name, ei_local->tx1, ei_local->lasttx, ei_local->txing);
1119 { /* We should never get here. */
1121 printk(KERN_DEBUG "%s: No Tx buffers free! tx1=%d tx2=%d last=%d\n",
1122 dev->name, ei_local->tx1, ei_local->tx2, ei_local->lasttx);
1123 ei_local->irqlock = 0;
1124 netif_stop_queue(dev);
1125 outb_p(ENISR_ALL, e8390_base + EN0_IMR);
1126 spin_unlock(&ei_local->page_lock);
1127 enable_irq(dev->irq);
1128 ei_local->stat.tx_errors++;
1133 * Okay, now upload the packet and trigger a send if the transmitter
1134 * isn't already sending. If it is busy, the interrupt handler will
1135 * trigger the send later, upon receiving a Tx done interrupt.
1138 if (length == skb->len)
1139 ei_block_output(dev, length, skb->data, output_page);
1141 memset(packet, 0, ETH_ZLEN);
1142 skb_copy_from_linear_data(skb, packet, skb->len);
1143 ei_block_output(dev, length, packet, output_page);
1146 if (! ei_local->txing)
1148 ei_local->txing = 1;
1149 NS8390_trigger_send(dev, send_length, output_page);
1150 dev->trans_start = jiffies;
1151 if (output_page == ei_local->tx_start_page)
1154 ei_local->lasttx = -1;
1159 ei_local->lasttx = -2;
1162 else ei_local->txqueue++;
1164 if (ei_local->tx1 && ei_local->tx2)
1165 netif_stop_queue(dev);
1167 netif_start_queue(dev);
1169 /* Turn 8390 interrupts back on. */
1170 ei_local->irqlock = 0;
1171 outb_p(ENISR_ALL, e8390_base + EN0_IMR);
1173 spin_unlock(&ei_local->page_lock);
1174 enable_irq(dev->irq);
1176 dev_kfree_skb (skb);
1177 ei_local->stat.tx_bytes += send_length;
1183 * ax_interrupt - handle the interrupts from an 8390
1184 * @irq: interrupt number
1185 * @dev_id: a pointer to the net_device
1188 * Handle the ether interface interrupts. We pull packets from
1189 * the 8390 via the card specific functions and fire them at the networking
1190 * stack. We also handle transmit completions and wake the transmit path if
1191 * necessary. We also update the counters and do other housekeeping as
1195 static irqreturn_t ax_interrupt(int irq, void *dev_id)
1197 struct net_device *dev = dev_id;
1199 int interrupts, nr_serviced = 0, i;
1200 struct ei_device *ei_local;
1203 e8390_base = dev->base_addr;
1204 ei_local = netdev_priv(dev);
1207 * Protect the irq test too.
1210 spin_lock(&ei_local->page_lock);
1212 if (ei_local->irqlock)
1214 #if 1 /* This might just be an interrupt for a PCI device sharing this line */
1215 /* The "irqlock" check is only for testing. */
1216 printk(ei_local->irqlock
1217 ? "%s: Interrupted while interrupts are masked! isr=%#2x imr=%#2x.\n"
1218 : "%s: Reentering the interrupt handler! isr=%#2x imr=%#2x.\n",
1219 dev->name, inb_p(e8390_base + EN0_ISR),
1220 inb_p(e8390_base + EN0_IMR));
1222 spin_unlock(&ei_local->page_lock);
1227 printk(KERN_DEBUG "%s: interrupt(isr=%#2.2x).\n", dev->name,
1228 inb_p(e8390_base + EN0_ISR));
1230 outb_p(0x00, e8390_base + EN0_ISR);
1231 ei_local->irqlock = 1;
1233 /* !!Assumption!! -- we stay in page 0. Don't break this. */
1234 while ((interrupts = inb_p(e8390_base + EN0_ISR)) != 0
1235 && ++nr_serviced < MAX_SERVICE)
1237 if (!netif_running(dev) || (interrupts == 0xff)) {
1239 printk(KERN_WARNING "%s: interrupt from stopped card\n", dev->name);
1240 outb_p(interrupts, e8390_base + EN0_ISR);
1246 /* AX88190 bug fix. */
1247 outb_p(interrupts, e8390_base + EN0_ISR);
1248 for (i = 0; i < 10; i++) {
1249 if (!(inb(e8390_base + EN0_ISR) & interrupts))
1251 outb_p(0, e8390_base + EN0_ISR);
1252 outb_p(interrupts, e8390_base + EN0_ISR);
1254 if (interrupts & ENISR_OVER)
1256 else if (interrupts & (ENISR_RX+ENISR_RX_ERR))
1258 /* Got a good (?) packet. */
1261 /* Push the next to-transmit packet through. */
1262 if (interrupts & ENISR_TX)
1264 else if (interrupts & ENISR_TX_ERR)
1267 if (interrupts & ENISR_COUNTERS)
1269 ei_local->stat.rx_frame_errors += inb_p(e8390_base + EN0_COUNTER0);
1270 ei_local->stat.rx_crc_errors += inb_p(e8390_base + EN0_COUNTER1);
1271 ei_local->stat.rx_missed_errors+= inb_p(e8390_base + EN0_COUNTER2);
1275 if (interrupts && ei_debug)
1278 if (nr_serviced >= MAX_SERVICE)
1280 /* 0xFF is valid for a card removal */
1281 if(interrupts!=0xFF)
1282 printk(KERN_WARNING "%s: Too much work at interrupt, status %#2.2x\n",
1283 dev->name, interrupts);
1284 outb_p(ENISR_ALL, e8390_base + EN0_ISR); /* Ack. most intrs. */
1286 printk(KERN_WARNING "%s: unknown interrupt %#2x\n", dev->name, interrupts);
1287 outb_p(0xff, e8390_base + EN0_ISR); /* Ack. all intrs. */
1291 /* Turn 8390 interrupts back on. */
1292 ei_local->irqlock = 0;
1293 outb_p(ENISR_ALL, e8390_base + EN0_IMR);
1295 spin_unlock(&ei_local->page_lock);
1296 return IRQ_RETVAL(handled);
1300 * ei_tx_err - handle transmitter error
1301 * @dev: network device which threw the exception
1303 * A transmitter error has happened. Most likely excess collisions (which
1304 * is a fairly normal condition). If the error is one where the Tx will
1305 * have been aborted, we try and send another one right away, instead of
1306 * letting the failed packet sit and collect dust in the Tx buffer. This
1307 * is a much better solution as it avoids kernel based Tx timeouts, and
1308 * an unnecessary card reset.
1310 * Called with lock held.
1313 static void ei_tx_err(struct net_device *dev)
1315 long e8390_base = dev->base_addr;
1316 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1317 unsigned char txsr = inb_p(e8390_base+EN0_TSR);
1318 unsigned char tx_was_aborted = txsr & (ENTSR_ABT+ENTSR_FU);
1320 #ifdef VERBOSE_ERROR_DUMP
1321 printk(KERN_DEBUG "%s: transmitter error (%#2x): ", dev->name, txsr);
1322 if (txsr & ENTSR_ABT)
1323 printk("excess-collisions ");
1324 if (txsr & ENTSR_ND)
1325 printk("non-deferral ");
1326 if (txsr & ENTSR_CRS)
1327 printk("lost-carrier ");
1328 if (txsr & ENTSR_FU)
1329 printk("FIFO-underrun ");
1330 if (txsr & ENTSR_CDH)
1331 printk("lost-heartbeat ");
1339 ei_local->stat.tx_errors++;
1340 if (txsr & ENTSR_CRS) ei_local->stat.tx_carrier_errors++;
1341 if (txsr & ENTSR_CDH) ei_local->stat.tx_heartbeat_errors++;
1342 if (txsr & ENTSR_OWC) ei_local->stat.tx_window_errors++;
1347 * ei_tx_intr - transmit interrupt handler
1348 * @dev: network device for which tx intr is handled
1350 * We have finished a transmit: check for errors and then trigger the next
1351 * packet to be sent. Called with lock held.
1354 static void ei_tx_intr(struct net_device *dev)
1356 long e8390_base = dev->base_addr;
1357 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1358 int status = inb(e8390_base + EN0_TSR);
1361 * There are two Tx buffers, see which one finished, and trigger
1362 * the send of another one if it exists.
1364 ei_local->txqueue--;
1366 if (ei_local->tx1 < 0)
1368 if (ei_local->lasttx != 1 && ei_local->lasttx != -1)
1369 printk(KERN_ERR "%s: bogus last_tx_buffer %d, tx1=%d.\n",
1370 ei_local->name, ei_local->lasttx, ei_local->tx1);
1372 if (ei_local->tx2 > 0)
1374 ei_local->txing = 1;
1375 NS8390_trigger_send(dev, ei_local->tx2, ei_local->tx_start_page + 6);
1376 dev->trans_start = jiffies;
1378 ei_local->lasttx = 2;
1380 else ei_local->lasttx = 20, ei_local->txing = 0;
1382 else if (ei_local->tx2 < 0)
1384 if (ei_local->lasttx != 2 && ei_local->lasttx != -2)
1385 printk("%s: bogus last_tx_buffer %d, tx2=%d.\n",
1386 ei_local->name, ei_local->lasttx, ei_local->tx2);
1388 if (ei_local->tx1 > 0)
1390 ei_local->txing = 1;
1391 NS8390_trigger_send(dev, ei_local->tx1, ei_local->tx_start_page);
1392 dev->trans_start = jiffies;
1394 ei_local->lasttx = 1;
1397 ei_local->lasttx = 10, ei_local->txing = 0;
1399 // else printk(KERN_WARNING "%s: unexpected TX-done interrupt, lasttx=%d.\n",
1400 // dev->name, ei_local->lasttx);
1402 /* Minimize Tx latency: update the statistics after we restart TXing. */
1403 if (status & ENTSR_COL)
1404 ei_local->stat.collisions++;
1405 if (status & ENTSR_PTX)
1406 ei_local->stat.tx_packets++;
1409 ei_local->stat.tx_errors++;
1410 if (status & ENTSR_ABT)
1412 ei_local->stat.tx_aborted_errors++;
1413 ei_local->stat.collisions += 16;
1415 if (status & ENTSR_CRS)
1416 ei_local->stat.tx_carrier_errors++;
1417 if (status & ENTSR_FU)
1418 ei_local->stat.tx_fifo_errors++;
1419 if (status & ENTSR_CDH)
1420 ei_local->stat.tx_heartbeat_errors++;
1421 if (status & ENTSR_OWC)
1422 ei_local->stat.tx_window_errors++;
1424 netif_wake_queue(dev);
1428 * ei_receive - receive some packets
1429 * @dev: network device with which receive will be run
1431 * We have a good packet(s), get it/them out of the buffers.
1432 * Called with lock held.
1435 static void ei_receive(struct net_device *dev)
1437 long e8390_base = dev->base_addr;
1438 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1439 unsigned char rxing_page, this_frame, next_frame;
1440 unsigned short current_offset;
1441 int rx_pkt_count = 0;
1442 struct e8390_pkt_hdr rx_frame;
1444 while (++rx_pkt_count < 10)
1446 int pkt_len, pkt_stat;
1448 /* Get the rx page (incoming packet pointer). */
1449 rxing_page = inb_p(e8390_base + EN1_CURPAG -1);
1451 /* Remove one frame from the ring. Boundary is always a page behind. */
1452 this_frame = inb_p(e8390_base + EN0_BOUNDARY) + 1;
1453 if (this_frame >= ei_local->stop_page)
1454 this_frame = ei_local->rx_start_page;
1456 /* Someday we'll omit the previous, iff we never get this message.
1457 (There is at least one clone claimed to have a problem.)
1459 Keep quiet if it looks like a card removal. One problem here
1460 is that some clones crash in roughly the same way.
1462 if (ei_debug > 0 && this_frame != ei_local->current_page && (this_frame!=0x0 || rxing_page!=0xFF))
1463 printk(KERN_ERR "%s: mismatched read page pointers %2x vs %2x.\n",
1464 dev->name, this_frame, ei_local->current_page);
1466 if (this_frame == rxing_page) /* Read all the frames? */
1467 break; /* Done for now */
1469 current_offset = this_frame << 8;
1470 ei_get_8390_hdr(dev, &rx_frame, this_frame);
1472 pkt_len = rx_frame.count - sizeof(struct e8390_pkt_hdr);
1473 pkt_stat = rx_frame.status;
1475 next_frame = this_frame + 1 + ((pkt_len+4)>>8);
1477 if (pkt_len < 60 || pkt_len > 1518)
1480 printk(KERN_DEBUG "%s: bogus packet size: %d, status=%#2x nxpg=%#2x.\n",
1481 dev->name, rx_frame.count, rx_frame.status,
1483 ei_local->stat.rx_errors++;
1484 ei_local->stat.rx_length_errors++;
1486 else if ((pkt_stat & 0x0F) == ENRSR_RXOK)
1488 struct sk_buff *skb;
1490 skb = dev_alloc_skb(pkt_len+2);
1494 printk(KERN_DEBUG "%s: Couldn't allocate a sk_buff of size %d.\n",
1495 dev->name, pkt_len);
1496 ei_local->stat.rx_dropped++;
1501 skb_reserve(skb,2); /* IP headers on 16 byte boundaries */
1502 skb_put(skb, pkt_len); /* Make room */
1503 ei_block_input(dev, pkt_len, skb, current_offset + sizeof(rx_frame));
1504 skb->protocol=eth_type_trans(skb,dev);
1506 dev->last_rx = jiffies;
1507 ei_local->stat.rx_packets++;
1508 ei_local->stat.rx_bytes += pkt_len;
1509 if (pkt_stat & ENRSR_PHY)
1510 ei_local->stat.multicast++;
1516 printk(KERN_DEBUG "%s: bogus packet: status=%#2x nxpg=%#2x size=%d\n",
1517 dev->name, rx_frame.status, rx_frame.next,
1519 ei_local->stat.rx_errors++;
1520 /* NB: The NIC counts CRC, frame and missed errors. */
1521 if (pkt_stat & ENRSR_FO)
1522 ei_local->stat.rx_fifo_errors++;
1524 next_frame = rx_frame.next;
1526 /* This _should_ never happen: it's here for avoiding bad clones. */
1527 if (next_frame >= ei_local->stop_page) {
1528 printk("%s: next frame inconsistency, %#2x\n", dev->name,
1530 next_frame = ei_local->rx_start_page;
1532 ei_local->current_page = next_frame;
1533 outb_p(next_frame-1, e8390_base+EN0_BOUNDARY);
1540 * ei_rx_overrun - handle receiver overrun
1541 * @dev: network device which threw exception
1543 * We have a receiver overrun: we have to kick the 8390 to get it started
1544 * again. Problem is that you have to kick it exactly as NS prescribes in
1545 * the updated datasheets, or "the NIC may act in an unpredictable manner."
1546 * This includes causing "the NIC to defer indefinitely when it is stopped
1547 * on a busy network." Ugh.
1548 * Called with lock held. Don't call this with the interrupts off or your
1549 * computer will hate you - it takes 10ms or so.
1552 static void ei_rx_overrun(struct net_device *dev)
1554 axnet_dev_t *info = PRIV(dev);
1555 long e8390_base = dev->base_addr;
1556 unsigned char was_txing, must_resend = 0;
1557 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1560 * Record whether a Tx was in progress and then issue the
1563 was_txing = inb_p(e8390_base+E8390_CMD) & E8390_TRANS;
1564 outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD);
1567 printk(KERN_DEBUG "%s: Receiver overrun.\n", dev->name);
1568 ei_local->stat.rx_over_errors++;
1571 * Wait a full Tx time (1.2ms) + some guard time, NS says 1.6ms total.
1572 * Early datasheets said to poll the reset bit, but now they say that
1573 * it "is not a reliable indicator and subsequently should be ignored."
1574 * We wait at least 10ms.
1580 * Reset RBCR[01] back to zero as per magic incantation.
1582 outb_p(0x00, e8390_base+EN0_RCNTLO);
1583 outb_p(0x00, e8390_base+EN0_RCNTHI);
1586 * See if any Tx was interrupted or not. According to NS, this
1587 * step is vital, and skipping it will cause no end of havoc.
1592 unsigned char tx_completed = inb_p(e8390_base+EN0_ISR) & (ENISR_TX+ENISR_TX_ERR);
1598 * Have to enter loopback mode and then restart the NIC before
1599 * you are allowed to slurp packets up off the ring.
1601 outb_p(E8390_TXOFF, e8390_base + EN0_TXCR);
1602 outb_p(E8390_NODMA + E8390_PAGE0 + E8390_START, e8390_base + E8390_CMD);
1605 * Clear the Rx ring of all the debris, and ack the interrupt.
1610 * Leave loopback mode, and resend any packet that got stopped.
1612 outb_p(E8390_TXCONFIG | info->duplex_flag, e8390_base + EN0_TXCR);
1614 outb_p(E8390_NODMA + E8390_PAGE0 + E8390_START + E8390_TRANS, e8390_base + E8390_CMD);
1618 * Collect the stats. This is called unlocked and from several contexts.
1621 static struct net_device_stats *get_stats(struct net_device *dev)
1623 long ioaddr = dev->base_addr;
1624 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1625 unsigned long flags;
1627 /* If the card is stopped, just return the present stats. */
1628 if (!netif_running(dev))
1629 return &ei_local->stat;
1631 spin_lock_irqsave(&ei_local->page_lock,flags);
1632 /* Read the counter registers, assuming we are in page 0. */
1633 ei_local->stat.rx_frame_errors += inb_p(ioaddr + EN0_COUNTER0);
1634 ei_local->stat.rx_crc_errors += inb_p(ioaddr + EN0_COUNTER1);
1635 ei_local->stat.rx_missed_errors+= inb_p(ioaddr + EN0_COUNTER2);
1636 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1638 return &ei_local->stat;
1642 * Form the 64 bit 8390 multicast table from the linked list of addresses
1643 * associated with this dev structure.
1646 static inline void make_mc_bits(u8 *bits, struct net_device *dev)
1648 struct dev_mc_list *dmi;
1651 for (dmi=dev->mc_list; dmi; dmi=dmi->next) {
1653 crc = ether_crc(ETH_ALEN, dmi->dmi_addr);
1655 * The 8390 uses the 6 most significant bits of the
1656 * CRC to index the multicast table.
1658 bits[crc>>29] |= (1<<((crc>>26)&7));
1663 * do_set_multicast_list - set/clear multicast filter
1664 * @dev: net device for which multicast filter is adjusted
1666 * Set or clear the multicast filter for this adaptor.
1667 * Must be called with lock held.
1670 static void do_set_multicast_list(struct net_device *dev)
1672 long e8390_base = dev->base_addr;
1674 struct ei_device *ei_local = (struct ei_device*)netdev_priv(dev);
1676 if (!(dev->flags&(IFF_PROMISC|IFF_ALLMULTI))) {
1677 memset(ei_local->mcfilter, 0, 8);
1679 make_mc_bits(ei_local->mcfilter, dev);
1681 /* set to accept-all */
1682 memset(ei_local->mcfilter, 0xFF, 8);
1685 outb_p(E8390_NODMA + E8390_PAGE1, e8390_base + E8390_CMD);
1686 for(i = 0; i < 8; i++)
1688 outb_p(ei_local->mcfilter[i], e8390_base + EN1_MULT_SHIFT(i));
1690 outb_p(E8390_NODMA + E8390_PAGE0, e8390_base + E8390_CMD);
1692 if(dev->flags&IFF_PROMISC)
1693 outb_p(E8390_RXCONFIG | 0x58, e8390_base + EN0_RXCR);
1694 else if(dev->flags&IFF_ALLMULTI || dev->mc_list)
1695 outb_p(E8390_RXCONFIG | 0x48, e8390_base + EN0_RXCR);
1697 outb_p(E8390_RXCONFIG | 0x40, e8390_base + EN0_RXCR);
1699 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, e8390_base+E8390_CMD);
1703 * Called without lock held. This is invoked from user context and may
1704 * be parallel to just about everything else. Its also fairly quick and
1705 * not called too often. Must protect against both bh and irq users
1708 static void set_multicast_list(struct net_device *dev)
1710 unsigned long flags;
1712 spin_lock_irqsave(&dev_lock(dev), flags);
1713 do_set_multicast_list(dev);
1714 spin_unlock_irqrestore(&dev_lock(dev), flags);
1718 * axdev_setup - init rest of 8390 device struct
1719 * @dev: network device structure to init
1721 * Initialize the rest of the 8390 device structure. Do NOT __init
1722 * this, as it is used by 8390 based modular drivers too.
1725 static void axdev_setup(struct net_device *dev)
1727 struct ei_device *ei_local;
1729 printk(version_8390);
1731 SET_MODULE_OWNER(dev);
1734 ei_local = (struct ei_device *)netdev_priv(dev);
1735 spin_lock_init(&ei_local->page_lock);
1737 dev->hard_start_xmit = &ei_start_xmit;
1738 dev->get_stats = get_stats;
1739 dev->set_multicast_list = &set_multicast_list;
1744 /* This page of functions should be 8390 generic */
1745 /* Follow National Semi's recommendations for initializing the "NIC". */
1748 * AX88190_init - initialize 8390 hardware
1749 * @dev: network device to initialize
1750 * @startp: boolean. non-zero value to initiate chip processing
1752 * Must be called with lock held.
1755 static void AX88190_init(struct net_device *dev, int startp)
1757 axnet_dev_t *info = PRIV(dev);
1758 long e8390_base = dev->base_addr;
1759 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1761 int endcfg = ei_local->word16 ? (0x48 | ENDCFG_WTS) : 0x48;
1763 if(sizeof(struct e8390_pkt_hdr)!=4)
1764 panic("8390.c: header struct mispacked\n");
1765 /* Follow National Semi's recommendations for initing the DP83902. */
1766 outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD); /* 0x21 */
1767 outb_p(endcfg, e8390_base + EN0_DCFG); /* 0x48 or 0x49 */
1768 /* Clear the remote byte count registers. */
1769 outb_p(0x00, e8390_base + EN0_RCNTLO);
1770 outb_p(0x00, e8390_base + EN0_RCNTHI);
1771 /* Set to monitor and loopback mode -- this is vital!. */
1772 outb_p(E8390_RXOFF|0x40, e8390_base + EN0_RXCR); /* 0x60 */
1773 outb_p(E8390_TXOFF, e8390_base + EN0_TXCR); /* 0x02 */
1774 /* Set the transmit page and receive ring. */
1775 outb_p(ei_local->tx_start_page, e8390_base + EN0_TPSR);
1776 ei_local->tx1 = ei_local->tx2 = 0;
1777 outb_p(ei_local->rx_start_page, e8390_base + EN0_STARTPG);
1778 outb_p(ei_local->stop_page-1, e8390_base + EN0_BOUNDARY); /* 3c503 says 0x3f,NS0x26*/
1779 ei_local->current_page = ei_local->rx_start_page; /* assert boundary+1 */
1780 outb_p(ei_local->stop_page, e8390_base + EN0_STOPPG);
1781 /* Clear the pending interrupts and mask. */
1782 outb_p(0xFF, e8390_base + EN0_ISR);
1783 outb_p(0x00, e8390_base + EN0_IMR);
1785 /* Copy the station address into the DS8390 registers. */
1787 outb_p(E8390_NODMA + E8390_PAGE1 + E8390_STOP, e8390_base+E8390_CMD); /* 0x61 */
1788 for(i = 0; i < 6; i++)
1790 outb_p(dev->dev_addr[i], e8390_base + EN1_PHYS_SHIFT(i));
1791 if(inb_p(e8390_base + EN1_PHYS_SHIFT(i))!=dev->dev_addr[i])
1792 printk(KERN_ERR "Hw. address read/write mismap %d\n",i);
1795 outb_p(ei_local->rx_start_page, e8390_base + EN1_CURPAG);
1796 outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD);
1798 netif_start_queue(dev);
1799 ei_local->tx1 = ei_local->tx2 = 0;
1800 ei_local->txing = 0;
1804 outb_p(0xff, e8390_base + EN0_ISR);
1805 outb_p(ENISR_ALL, e8390_base + EN0_IMR);
1806 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, e8390_base+E8390_CMD);
1807 outb_p(E8390_TXCONFIG | info->duplex_flag,
1808 e8390_base + EN0_TXCR); /* xmit on. */
1809 /* 3c503 TechMan says rxconfig only after the NIC is started. */
1810 outb_p(E8390_RXCONFIG | 0x40, e8390_base + EN0_RXCR); /* rx on, */
1811 do_set_multicast_list(dev); /* (re)load the mcast table */
1815 /* Trigger a transmit start, assuming the length is valid.
1816 Always called with the page lock held */
1818 static void NS8390_trigger_send(struct net_device *dev, unsigned int length,
1821 long e8390_base = dev->base_addr;
1822 struct ei_device *ei_local __attribute((unused)) = (struct ei_device *) netdev_priv(dev);
1824 if (inb_p(e8390_base) & E8390_TRANS)
1826 printk(KERN_WARNING "%s: trigger_send() called with the transmitter busy.\n",
1830 outb_p(length & 0xff, e8390_base + EN0_TCNTLO);
1831 outb_p(length >> 8, e8390_base + EN0_TCNTHI);
1832 outb_p(start_page, e8390_base + EN0_TPSR);
1833 outb_p(E8390_NODMA+E8390_TRANS+E8390_START, e8390_base+E8390_CMD);