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)
524 axnet_dev_t *info = PRIV(dev);
525 struct pcmcia_device *link = info->p_dev;
527 DEBUG(2, "axnet_open('%s')\n", dev->name);
529 if (!pcmcia_dev_present(link))
534 request_irq(dev->irq, ei_irq_wrapper, IRQF_SHARED, "axnet_cs", dev);
536 info->link_status = 0x00;
537 init_timer(&info->watchdog);
538 info->watchdog.function = &ei_watchdog;
539 info->watchdog.data = (u_long)dev;
540 info->watchdog.expires = jiffies + HZ;
541 add_timer(&info->watchdog);
546 /*====================================================================*/
548 static int axnet_close(struct net_device *dev)
550 axnet_dev_t *info = PRIV(dev);
551 struct pcmcia_device *link = info->p_dev;
553 DEBUG(2, "axnet_close('%s')\n", dev->name);
556 free_irq(dev->irq, dev);
559 netif_stop_queue(dev);
560 del_timer_sync(&info->watchdog);
565 /*======================================================================
567 Hard reset the card. This used to pause for the same period that
568 a 8390 reset command required, but that shouldn't be necessary.
570 ======================================================================*/
572 static void axnet_reset_8390(struct net_device *dev)
574 kio_addr_t nic_base = dev->base_addr;
577 ei_status.txing = ei_status.dmaing = 0;
579 outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, nic_base + E8390_CMD);
581 outb(inb(nic_base + AXNET_RESET), nic_base + AXNET_RESET);
583 for (i = 0; i < 100; i++) {
584 if ((inb_p(nic_base+EN0_ISR) & ENISR_RESET) != 0)
588 outb_p(ENISR_RESET, nic_base + EN0_ISR); /* Ack intr. */
591 printk(KERN_ERR "%s: axnet_reset_8390() did not complete.\n",
594 } /* axnet_reset_8390 */
596 /*====================================================================*/
598 static irqreturn_t ei_irq_wrapper(int irq, void *dev_id)
600 struct net_device *dev = dev_id;
601 PRIV(dev)->stale = 0;
602 return ax_interrupt(irq, dev_id);
605 static void ei_watchdog(u_long arg)
607 struct net_device *dev = (struct net_device *)(arg);
608 axnet_dev_t *info = PRIV(dev);
609 kio_addr_t nic_base = dev->base_addr;
610 kio_addr_t mii_addr = nic_base + AXNET_MII_EEP;
613 if (!netif_device_present(dev)) goto reschedule;
615 /* Check for pending interrupt with expired latency timer: with
616 this, we can limp along even if the interrupt is blocked */
617 if (info->stale++ && (inb_p(nic_base + EN0_ISR) & ENISR_ALL)) {
618 if (!info->fast_poll)
619 printk(KERN_INFO "%s: interrupt(s) dropped!\n", dev->name);
620 ei_irq_wrapper(dev->irq, dev);
621 info->fast_poll = HZ;
623 if (info->fast_poll) {
625 info->watchdog.expires = jiffies + 1;
626 add_timer(&info->watchdog);
630 if (info->phy_id < 0)
632 link = mdio_read(mii_addr, info->phy_id, 1);
633 if (!link || (link == 0xffff)) {
634 printk(KERN_INFO "%s: MII is missing!\n", dev->name);
640 if (link != info->link_status) {
641 u_short p = mdio_read(mii_addr, info->phy_id, 5);
642 printk(KERN_INFO "%s: %s link beat\n", dev->name,
643 (link) ? "found" : "lost");
645 info->duplex_flag = (p & 0x0140) ? 0x80 : 0x00;
647 printk(KERN_INFO "%s: autonegotiation complete: "
648 "%sbaseT-%cD selected\n", dev->name,
649 ((p & 0x0180) ? "100" : "10"),
650 ((p & 0x0140) ? 'F' : 'H'));
652 printk(KERN_INFO "%s: link partner did not autonegotiate\n",
654 AX88190_init(dev, 1);
656 info->link_status = link;
660 info->watchdog.expires = jiffies + HZ;
661 add_timer(&info->watchdog);
664 static void netdev_get_drvinfo(struct net_device *dev,
665 struct ethtool_drvinfo *info)
667 strcpy(info->driver, "axnet_cs");
670 static const struct ethtool_ops netdev_ethtool_ops = {
671 .get_drvinfo = netdev_get_drvinfo,
674 /*====================================================================*/
676 static int axnet_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
678 axnet_dev_t *info = PRIV(dev);
679 u16 *data = (u16 *)&rq->ifr_ifru;
680 kio_addr_t mii_addr = dev->base_addr + AXNET_MII_EEP;
683 data[0] = info->phy_id;
684 case SIOCGMIIREG: /* Read MII PHY register. */
685 data[3] = mdio_read(mii_addr, data[0], data[1] & 0x1f);
687 case SIOCSMIIREG: /* Write MII PHY register. */
688 if (!capable(CAP_NET_ADMIN))
690 mdio_write(mii_addr, data[0], data[1] & 0x1f, data[2]);
696 /*====================================================================*/
698 static void get_8390_hdr(struct net_device *dev,
699 struct e8390_pkt_hdr *hdr,
702 kio_addr_t nic_base = dev->base_addr;
704 outb_p(0, nic_base + EN0_RSARLO); /* On page boundary */
705 outb_p(ring_page, nic_base + EN0_RSARHI);
706 outb_p(E8390_RREAD+E8390_START, nic_base + AXNET_CMD);
708 insw(nic_base + AXNET_DATAPORT, hdr,
709 sizeof(struct e8390_pkt_hdr)>>1);
710 /* Fix for big endian systems */
711 hdr->count = le16_to_cpu(hdr->count);
715 /*====================================================================*/
717 static void block_input(struct net_device *dev, int count,
718 struct sk_buff *skb, int ring_offset)
720 kio_addr_t nic_base = dev->base_addr;
721 int xfer_count = count;
722 char *buf = skb->data;
725 if ((ei_debug > 4) && (count != 4))
726 printk(KERN_DEBUG "%s: [bi=%d]\n", dev->name, count+4);
728 outb_p(ring_offset & 0xff, nic_base + EN0_RSARLO);
729 outb_p(ring_offset >> 8, nic_base + EN0_RSARHI);
730 outb_p(E8390_RREAD+E8390_START, nic_base + AXNET_CMD);
732 insw(nic_base + AXNET_DATAPORT,buf,count>>1);
734 buf[count-1] = inb(nic_base + AXNET_DATAPORT), xfer_count++;
738 /*====================================================================*/
740 static void block_output(struct net_device *dev, int count,
741 const u_char *buf, const int start_page)
743 kio_addr_t nic_base = dev->base_addr;
747 printk(KERN_DEBUG "%s: [bo=%d]\n", dev->name, count);
750 /* Round the count up for word writes. Do we need to do this?
751 What effect will an odd byte count have on the 8390?
752 I should check someday. */
756 outb_p(0x00, nic_base + EN0_RSARLO);
757 outb_p(start_page, nic_base + EN0_RSARHI);
758 outb_p(E8390_RWRITE+E8390_START, nic_base + AXNET_CMD);
759 outsw(nic_base + AXNET_DATAPORT, buf, count>>1);
762 static struct pcmcia_device_id axnet_ids[] = {
763 PCMCIA_PFC_DEVICE_MANF_CARD(0, 0x016c, 0x0081),
764 PCMCIA_DEVICE_MANF_CARD(0x018a, 0x0301),
765 PCMCIA_DEVICE_MANF_CARD(0x026f, 0x0301),
766 PCMCIA_DEVICE_MANF_CARD(0x026f, 0x0303),
767 PCMCIA_DEVICE_MANF_CARD(0x026f, 0x0309),
768 PCMCIA_DEVICE_MANF_CARD(0x0274, 0x1106),
769 PCMCIA_DEVICE_MANF_CARD(0x8a01, 0xc1ab),
770 PCMCIA_DEVICE_MANF_CARD(0x021b, 0x0202),
771 PCMCIA_DEVICE_PROD_ID12("AmbiCom,Inc.", "Fast Ethernet PC Card(AMB8110)", 0x49b020a7, 0x119cc9fc),
772 PCMCIA_DEVICE_PROD_ID124("Fast Ethernet", "16-bit PC Card", "AX88190", 0xb4be14e3, 0x9a12eb6a, 0xab9be5ef),
773 PCMCIA_DEVICE_PROD_ID12("ASIX", "AX88190", 0x0959823b, 0xab9be5ef),
774 PCMCIA_DEVICE_PROD_ID12("Billionton", "LNA-100B", 0x552ab682, 0xbc3b87e1),
775 PCMCIA_DEVICE_PROD_ID12("CHEETAH ETHERCARD", "EN2228", 0x00fa7bc8, 0x00e990cc),
776 PCMCIA_DEVICE_PROD_ID12("CNet", "CNF301", 0xbc477dde, 0x78c5f40b),
777 PCMCIA_DEVICE_PROD_ID12("corega K.K.", "corega FEther PCC-TXD", 0x5261440f, 0x436768c5),
778 PCMCIA_DEVICE_PROD_ID12("corega K.K.", "corega FEtherII PCC-TXD", 0x5261440f, 0x730df72e),
779 PCMCIA_DEVICE_PROD_ID12("Dynalink", "L100C16", 0x55632fd5, 0x66bc2a90),
780 PCMCIA_DEVICE_PROD_ID12("Linksys", "EtherFast 10/100 PC Card (PCMPC100 V3)", 0x0733cc81, 0x232019a8),
781 PCMCIA_DEVICE_PROD_ID12("MELCO", "LPC3-TX", 0x481e0094, 0xf91af609),
782 PCMCIA_DEVICE_PROD_ID12("PCMCIA", "100BASE", 0x281f1c5d, 0x7c2add04),
783 PCMCIA_DEVICE_PROD_ID12("PCMCIA", "FastEtherCard", 0x281f1c5d, 0x7ef26116),
784 PCMCIA_DEVICE_PROD_ID12("PCMCIA", "FEP501", 0x281f1c5d, 0x2e272058),
785 PCMCIA_DEVICE_PROD_ID14("Network Everywhere", "AX88190", 0x820a67b6, 0xab9be5ef),
788 MODULE_DEVICE_TABLE(pcmcia, axnet_ids);
790 static struct pcmcia_driver axnet_cs_driver = {
791 .owner = THIS_MODULE,
795 .probe = axnet_probe,
796 .remove = axnet_detach,
797 .id_table = axnet_ids,
798 .suspend = axnet_suspend,
799 .resume = axnet_resume,
802 static int __init init_axnet_cs(void)
804 return pcmcia_register_driver(&axnet_cs_driver);
807 static void __exit exit_axnet_cs(void)
809 pcmcia_unregister_driver(&axnet_cs_driver);
812 module_init(init_axnet_cs);
813 module_exit(exit_axnet_cs);
815 /*====================================================================*/
817 /* 8390.c: A general NS8390 ethernet driver core for linux. */
819 Written 1992-94 by Donald Becker.
821 Copyright 1993 United States Government as represented by the
822 Director, National Security Agency.
824 This software may be used and distributed according to the terms
825 of the GNU General Public License, incorporated herein by reference.
827 The author may be reached as becker@scyld.com, or C/O
828 Scyld Computing Corporation
829 410 Severn Ave., Suite 210
832 This is the chip-specific code for many 8390-based ethernet adaptors.
833 This is not a complete driver, it must be combined with board-specific
834 code such as ne.c, wd.c, 3c503.c, etc.
836 Seeing how at least eight drivers use this code, (not counting the
837 PCMCIA ones either) it is easy to break some card by what seems like
838 a simple innocent change. Please contact me or Donald if you think
839 you have found something that needs changing. -- PG
843 Paul Gortmaker : remove set_bit lock, other cleanups.
844 Paul Gortmaker : add ei_get_8390_hdr() so we can pass skb's to
845 ei_block_input() for eth_io_copy_and_sum().
846 Paul Gortmaker : exchange static int ei_pingpong for a #define,
847 also add better Tx error handling.
848 Paul Gortmaker : rewrite Rx overrun handling as per NS specs.
849 Alexey Kuznetsov : use the 8390's six bit hash multicast filter.
850 Paul Gortmaker : tweak ANK's above multicast changes a bit.
851 Paul Gortmaker : update packet statistics for v2.1.x
852 Alan Cox : support arbitary stupid port mappings on the
853 68K Macintosh. Support >16bit I/O spaces
854 Paul Gortmaker : add kmod support for auto-loading of the 8390
855 module by all drivers that require it.
856 Alan Cox : Spinlocking work, added 'BUG_83C690'
857 Paul Gortmaker : Separate out Tx timeout code from Tx path.
860 The National Semiconductor LAN Databook, and the 3Com 3c503 databook.
864 static const char *version_8390 =
865 "8390.c:v1.10cvs 9/23/94 Donald Becker (becker@scyld.com)\n";
867 #include <linux/bitops.h>
869 #include <linux/fcntl.h>
870 #include <linux/in.h>
871 #include <linux/interrupt.h>
873 #include <linux/etherdevice.h>
877 /* These are the operational function interfaces to board-specific
879 void reset_8390(struct net_device *dev)
880 Resets the board associated with DEV, including a hardware reset of
881 the 8390. This is only called when there is a transmit timeout, and
882 it is always followed by 8390_init().
883 void block_output(struct net_device *dev, int count, const unsigned char *buf,
885 Write the COUNT bytes of BUF to the packet buffer at START_PAGE. The
886 "page" value uses the 8390's 256-byte pages.
887 void get_8390_hdr(struct net_device *dev, struct e8390_hdr *hdr, int ring_page)
888 Read the 4 byte, page aligned 8390 header. *If* there is a
889 subsequent read, it will be of the rest of the packet.
890 void block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset)
891 Read COUNT bytes from the packet buffer into the skb data area. Start
892 reading from RING_OFFSET, the address as the 8390 sees it. This will always
893 follow the read of the 8390 header.
895 #define ei_reset_8390 (ei_local->reset_8390)
896 #define ei_block_output (ei_local->block_output)
897 #define ei_block_input (ei_local->block_input)
898 #define ei_get_8390_hdr (ei_local->get_8390_hdr)
900 /* use 0 for production, 1 for verification, >2 for debug */
905 /* Index to functions. */
906 static void ei_tx_intr(struct net_device *dev);
907 static void ei_tx_err(struct net_device *dev);
908 static void ei_tx_timeout(struct net_device *dev);
909 static void ei_receive(struct net_device *dev);
910 static void ei_rx_overrun(struct net_device *dev);
912 /* Routines generic to NS8390-based boards. */
913 static void NS8390_trigger_send(struct net_device *dev, unsigned int length,
915 static void set_multicast_list(struct net_device *dev);
916 static void do_set_multicast_list(struct net_device *dev);
919 * SMP and the 8390 setup.
921 * The 8390 isnt exactly designed to be multithreaded on RX/TX. There is
922 * a page register that controls bank and packet buffer access. We guard
923 * this with ei_local->page_lock. Nobody should assume or set the page other
924 * than zero when the lock is not held. Lock holders must restore page 0
925 * before unlocking. Even pure readers must take the lock to protect in
928 * To make life difficult the chip can also be very slow. We therefore can't
929 * just use spinlocks. For the longer lockups we disable the irq the device
930 * sits on and hold the lock. We must hold the lock because there is a dual
931 * processor case other than interrupts (get stats/set multicast list in
932 * parallel with each other and transmit).
934 * Note: in theory we can just disable the irq on the card _but_ there is
935 * a latency on SMP irq delivery. So we can easily go "disable irq" "sync irqs"
936 * enter lock, take the queued irq. So we waddle instead of flying.
938 * Finally by special arrangement for the purpose of being generally
939 * annoying the transmit function is called bh atomic. That places
940 * restrictions on the user context callers as disable_irq won't save
945 * ax_open - Open/initialize the board.
946 * @dev: network device to initialize
948 * This routine goes all-out, setting everything
949 * up anew at each open, even though many of these registers should only
950 * need to be set once at boot.
952 static int ax_open(struct net_device *dev)
955 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
957 #ifdef HAVE_TX_TIMEOUT
958 /* The card I/O part of the driver (e.g. 3c503) can hook a Tx timeout
959 wrapper that does e.g. media check & then calls ei_tx_timeout. */
960 if (dev->tx_timeout == NULL)
961 dev->tx_timeout = ei_tx_timeout;
962 if (dev->watchdog_timeo <= 0)
963 dev->watchdog_timeo = TX_TIMEOUT;
967 * Grab the page lock so we own the register set, then call
971 spin_lock_irqsave(&ei_local->page_lock, flags);
972 AX88190_init(dev, 1);
973 /* Set the flag before we drop the lock, That way the IRQ arrives
974 after its set and we get no silly warnings */
975 netif_start_queue(dev);
976 spin_unlock_irqrestore(&ei_local->page_lock, flags);
977 ei_local->irqlock = 0;
981 #define dev_lock(dev) (((struct ei_device *)netdev_priv(dev))->page_lock)
984 * ax_close - shut down network device
985 * @dev: network device to close
987 * Opposite of ax_open(). Only used when "ifconfig <devname> down" is done.
989 int ax_close(struct net_device *dev)
994 * Hold the page lock during close
997 spin_lock_irqsave(&dev_lock(dev), flags);
998 AX88190_init(dev, 0);
999 spin_unlock_irqrestore(&dev_lock(dev), flags);
1000 netif_stop_queue(dev);
1005 * ei_tx_timeout - handle transmit time out condition
1006 * @dev: network device which has apparently fallen asleep
1008 * Called by kernel when device never acknowledges a transmit has
1009 * completed (or failed) - i.e. never posted a Tx related interrupt.
1012 void ei_tx_timeout(struct net_device *dev)
1014 long e8390_base = dev->base_addr;
1015 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1016 int txsr, isr, tickssofar = jiffies - dev->trans_start;
1017 unsigned long flags;
1019 ei_local->stat.tx_errors++;
1021 spin_lock_irqsave(&ei_local->page_lock, flags);
1022 txsr = inb(e8390_base+EN0_TSR);
1023 isr = inb(e8390_base+EN0_ISR);
1024 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1026 printk(KERN_DEBUG "%s: Tx timed out, %s TSR=%#2x, ISR=%#2x, t=%d.\n",
1027 dev->name, (txsr & ENTSR_ABT) ? "excess collisions." :
1028 (isr) ? "lost interrupt?" : "cable problem?", txsr, isr, tickssofar);
1030 if (!isr && !ei_local->stat.tx_packets)
1032 /* The 8390 probably hasn't gotten on the cable yet. */
1033 ei_local->interface_num ^= 1; /* Try a different xcvr. */
1036 /* Ugly but a reset can be slow, yet must be protected */
1038 disable_irq_nosync(dev->irq);
1039 spin_lock(&ei_local->page_lock);
1041 /* Try to restart the card. Perhaps the user has fixed something. */
1043 AX88190_init(dev, 1);
1045 spin_unlock(&ei_local->page_lock);
1046 enable_irq(dev->irq);
1047 netif_wake_queue(dev);
1051 * ei_start_xmit - begin packet transmission
1052 * @skb: packet to be sent
1053 * @dev: network device to which packet is sent
1055 * Sends a packet to an 8390 network device.
1058 static int ei_start_xmit(struct sk_buff *skb, struct net_device *dev)
1060 long e8390_base = dev->base_addr;
1061 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1062 int length, send_length, output_page;
1063 unsigned long flags;
1064 u8 packet[ETH_ZLEN];
1066 netif_stop_queue(dev);
1070 /* Mask interrupts from the ethercard.
1071 SMP: We have to grab the lock here otherwise the IRQ handler
1072 on another CPU can flip window and race the IRQ mask set. We end
1073 up trashing the mcast filter not disabling irqs if we don't lock */
1075 spin_lock_irqsave(&ei_local->page_lock, flags);
1076 outb_p(0x00, e8390_base + EN0_IMR);
1077 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1080 * Slow phase with lock held.
1083 disable_irq_nosync(dev->irq);
1085 spin_lock(&ei_local->page_lock);
1087 ei_local->irqlock = 1;
1089 send_length = ETH_ZLEN < length ? length : ETH_ZLEN;
1092 * We have two Tx slots available for use. Find the first free
1093 * slot, and then perform some sanity checks. With two Tx bufs,
1094 * you get very close to transmitting back-to-back packets. With
1095 * only one Tx buf, the transmitter sits idle while you reload the
1096 * card, leaving a substantial gap between each transmitted packet.
1099 if (ei_local->tx1 == 0)
1101 output_page = ei_local->tx_start_page;
1102 ei_local->tx1 = send_length;
1103 if (ei_debug && ei_local->tx2 > 0)
1104 printk(KERN_DEBUG "%s: idle transmitter tx2=%d, lasttx=%d, txing=%d.\n",
1105 dev->name, ei_local->tx2, ei_local->lasttx, ei_local->txing);
1107 else if (ei_local->tx2 == 0)
1109 output_page = ei_local->tx_start_page + TX_PAGES/2;
1110 ei_local->tx2 = send_length;
1111 if (ei_debug && ei_local->tx1 > 0)
1112 printk(KERN_DEBUG "%s: idle transmitter, tx1=%d, lasttx=%d, txing=%d.\n",
1113 dev->name, ei_local->tx1, ei_local->lasttx, ei_local->txing);
1116 { /* We should never get here. */
1118 printk(KERN_DEBUG "%s: No Tx buffers free! tx1=%d tx2=%d last=%d\n",
1119 dev->name, ei_local->tx1, ei_local->tx2, ei_local->lasttx);
1120 ei_local->irqlock = 0;
1121 netif_stop_queue(dev);
1122 outb_p(ENISR_ALL, e8390_base + EN0_IMR);
1123 spin_unlock(&ei_local->page_lock);
1124 enable_irq(dev->irq);
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 memcpy(packet, skb->data, 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(&ei_local->page_lock);
1171 enable_irq(dev->irq);
1173 dev_kfree_skb (skb);
1174 ei_local->stat.tx_bytes += send_length;
1180 * ax_interrupt - handle the interrupts from an 8390
1181 * @irq: interrupt number
1182 * @dev_id: a pointer to the net_device
1185 * Handle the ether interface interrupts. We pull packets from
1186 * the 8390 via the card specific functions and fire them at the networking
1187 * stack. We also handle transmit completions and wake the transmit path if
1188 * necessary. We also update the counters and do other housekeeping as
1192 static irqreturn_t ax_interrupt(int irq, void *dev_id)
1194 struct net_device *dev = dev_id;
1196 int interrupts, nr_serviced = 0, i;
1197 struct ei_device *ei_local;
1200 e8390_base = dev->base_addr;
1201 ei_local = netdev_priv(dev);
1204 * Protect the irq test too.
1207 spin_lock(&ei_local->page_lock);
1209 if (ei_local->irqlock)
1211 #if 1 /* This might just be an interrupt for a PCI device sharing this line */
1212 /* The "irqlock" check is only for testing. */
1213 printk(ei_local->irqlock
1214 ? "%s: Interrupted while interrupts are masked! isr=%#2x imr=%#2x.\n"
1215 : "%s: Reentering the interrupt handler! isr=%#2x imr=%#2x.\n",
1216 dev->name, inb_p(e8390_base + EN0_ISR),
1217 inb_p(e8390_base + EN0_IMR));
1219 spin_unlock(&ei_local->page_lock);
1224 printk(KERN_DEBUG "%s: interrupt(isr=%#2.2x).\n", dev->name,
1225 inb_p(e8390_base + EN0_ISR));
1227 outb_p(0x00, e8390_base + EN0_ISR);
1228 ei_local->irqlock = 1;
1230 /* !!Assumption!! -- we stay in page 0. Don't break this. */
1231 while ((interrupts = inb_p(e8390_base + EN0_ISR)) != 0
1232 && ++nr_serviced < MAX_SERVICE)
1234 if (!netif_running(dev) || (interrupts == 0xff)) {
1236 printk(KERN_WARNING "%s: interrupt from stopped card\n", dev->name);
1237 outb_p(interrupts, e8390_base + EN0_ISR);
1243 /* AX88190 bug fix. */
1244 outb_p(interrupts, e8390_base + EN0_ISR);
1245 for (i = 0; i < 10; i++) {
1246 if (!(inb(e8390_base + EN0_ISR) & interrupts))
1248 outb_p(0, e8390_base + EN0_ISR);
1249 outb_p(interrupts, e8390_base + EN0_ISR);
1251 if (interrupts & ENISR_OVER)
1253 else if (interrupts & (ENISR_RX+ENISR_RX_ERR))
1255 /* Got a good (?) packet. */
1258 /* Push the next to-transmit packet through. */
1259 if (interrupts & ENISR_TX)
1261 else if (interrupts & ENISR_TX_ERR)
1264 if (interrupts & ENISR_COUNTERS)
1266 ei_local->stat.rx_frame_errors += inb_p(e8390_base + EN0_COUNTER0);
1267 ei_local->stat.rx_crc_errors += inb_p(e8390_base + EN0_COUNTER1);
1268 ei_local->stat.rx_missed_errors+= inb_p(e8390_base + EN0_COUNTER2);
1272 if (interrupts && ei_debug)
1275 if (nr_serviced >= MAX_SERVICE)
1277 /* 0xFF is valid for a card removal */
1278 if(interrupts!=0xFF)
1279 printk(KERN_WARNING "%s: Too much work at interrupt, status %#2.2x\n",
1280 dev->name, interrupts);
1281 outb_p(ENISR_ALL, e8390_base + EN0_ISR); /* Ack. most intrs. */
1283 printk(KERN_WARNING "%s: unknown interrupt %#2x\n", dev->name, interrupts);
1284 outb_p(0xff, e8390_base + EN0_ISR); /* Ack. all intrs. */
1288 /* Turn 8390 interrupts back on. */
1289 ei_local->irqlock = 0;
1290 outb_p(ENISR_ALL, e8390_base + EN0_IMR);
1292 spin_unlock(&ei_local->page_lock);
1293 return IRQ_RETVAL(handled);
1297 * ei_tx_err - handle transmitter error
1298 * @dev: network device which threw the exception
1300 * A transmitter error has happened. Most likely excess collisions (which
1301 * is a fairly normal condition). If the error is one where the Tx will
1302 * have been aborted, we try and send another one right away, instead of
1303 * letting the failed packet sit and collect dust in the Tx buffer. This
1304 * is a much better solution as it avoids kernel based Tx timeouts, and
1305 * an unnecessary card reset.
1307 * Called with lock held.
1310 static void ei_tx_err(struct net_device *dev)
1312 long e8390_base = dev->base_addr;
1313 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1314 unsigned char txsr = inb_p(e8390_base+EN0_TSR);
1315 unsigned char tx_was_aborted = txsr & (ENTSR_ABT+ENTSR_FU);
1317 #ifdef VERBOSE_ERROR_DUMP
1318 printk(KERN_DEBUG "%s: transmitter error (%#2x): ", dev->name, txsr);
1319 if (txsr & ENTSR_ABT)
1320 printk("excess-collisions ");
1321 if (txsr & ENTSR_ND)
1322 printk("non-deferral ");
1323 if (txsr & ENTSR_CRS)
1324 printk("lost-carrier ");
1325 if (txsr & ENTSR_FU)
1326 printk("FIFO-underrun ");
1327 if (txsr & ENTSR_CDH)
1328 printk("lost-heartbeat ");
1336 ei_local->stat.tx_errors++;
1337 if (txsr & ENTSR_CRS) ei_local->stat.tx_carrier_errors++;
1338 if (txsr & ENTSR_CDH) ei_local->stat.tx_heartbeat_errors++;
1339 if (txsr & ENTSR_OWC) ei_local->stat.tx_window_errors++;
1344 * ei_tx_intr - transmit interrupt handler
1345 * @dev: network device for which tx intr is handled
1347 * We have finished a transmit: check for errors and then trigger the next
1348 * packet to be sent. Called with lock held.
1351 static void ei_tx_intr(struct net_device *dev)
1353 long e8390_base = dev->base_addr;
1354 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1355 int status = inb(e8390_base + EN0_TSR);
1358 * There are two Tx buffers, see which one finished, and trigger
1359 * the send of another one if it exists.
1361 ei_local->txqueue--;
1363 if (ei_local->tx1 < 0)
1365 if (ei_local->lasttx != 1 && ei_local->lasttx != -1)
1366 printk(KERN_ERR "%s: bogus last_tx_buffer %d, tx1=%d.\n",
1367 ei_local->name, ei_local->lasttx, ei_local->tx1);
1369 if (ei_local->tx2 > 0)
1371 ei_local->txing = 1;
1372 NS8390_trigger_send(dev, ei_local->tx2, ei_local->tx_start_page + 6);
1373 dev->trans_start = jiffies;
1375 ei_local->lasttx = 2;
1377 else ei_local->lasttx = 20, ei_local->txing = 0;
1379 else if (ei_local->tx2 < 0)
1381 if (ei_local->lasttx != 2 && ei_local->lasttx != -2)
1382 printk("%s: bogus last_tx_buffer %d, tx2=%d.\n",
1383 ei_local->name, ei_local->lasttx, ei_local->tx2);
1385 if (ei_local->tx1 > 0)
1387 ei_local->txing = 1;
1388 NS8390_trigger_send(dev, ei_local->tx1, ei_local->tx_start_page);
1389 dev->trans_start = jiffies;
1391 ei_local->lasttx = 1;
1394 ei_local->lasttx = 10, ei_local->txing = 0;
1396 // else printk(KERN_WARNING "%s: unexpected TX-done interrupt, lasttx=%d.\n",
1397 // dev->name, ei_local->lasttx);
1399 /* Minimize Tx latency: update the statistics after we restart TXing. */
1400 if (status & ENTSR_COL)
1401 ei_local->stat.collisions++;
1402 if (status & ENTSR_PTX)
1403 ei_local->stat.tx_packets++;
1406 ei_local->stat.tx_errors++;
1407 if (status & ENTSR_ABT)
1409 ei_local->stat.tx_aborted_errors++;
1410 ei_local->stat.collisions += 16;
1412 if (status & ENTSR_CRS)
1413 ei_local->stat.tx_carrier_errors++;
1414 if (status & ENTSR_FU)
1415 ei_local->stat.tx_fifo_errors++;
1416 if (status & ENTSR_CDH)
1417 ei_local->stat.tx_heartbeat_errors++;
1418 if (status & ENTSR_OWC)
1419 ei_local->stat.tx_window_errors++;
1421 netif_wake_queue(dev);
1425 * ei_receive - receive some packets
1426 * @dev: network device with which receive will be run
1428 * We have a good packet(s), get it/them out of the buffers.
1429 * Called with lock held.
1432 static void ei_receive(struct net_device *dev)
1434 long e8390_base = dev->base_addr;
1435 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1436 unsigned char rxing_page, this_frame, next_frame;
1437 unsigned short current_offset;
1438 int rx_pkt_count = 0;
1439 struct e8390_pkt_hdr rx_frame;
1441 while (++rx_pkt_count < 10)
1443 int pkt_len, pkt_stat;
1445 /* Get the rx page (incoming packet pointer). */
1446 rxing_page = inb_p(e8390_base + EN1_CURPAG -1);
1448 /* Remove one frame from the ring. Boundary is always a page behind. */
1449 this_frame = inb_p(e8390_base + EN0_BOUNDARY) + 1;
1450 if (this_frame >= ei_local->stop_page)
1451 this_frame = ei_local->rx_start_page;
1453 /* Someday we'll omit the previous, iff we never get this message.
1454 (There is at least one clone claimed to have a problem.)
1456 Keep quiet if it looks like a card removal. One problem here
1457 is that some clones crash in roughly the same way.
1459 if (ei_debug > 0 && this_frame != ei_local->current_page && (this_frame!=0x0 || rxing_page!=0xFF))
1460 printk(KERN_ERR "%s: mismatched read page pointers %2x vs %2x.\n",
1461 dev->name, this_frame, ei_local->current_page);
1463 if (this_frame == rxing_page) /* Read all the frames? */
1464 break; /* Done for now */
1466 current_offset = this_frame << 8;
1467 ei_get_8390_hdr(dev, &rx_frame, this_frame);
1469 pkt_len = rx_frame.count - sizeof(struct e8390_pkt_hdr);
1470 pkt_stat = rx_frame.status;
1472 next_frame = this_frame + 1 + ((pkt_len+4)>>8);
1474 if (pkt_len < 60 || pkt_len > 1518)
1477 printk(KERN_DEBUG "%s: bogus packet size: %d, status=%#2x nxpg=%#2x.\n",
1478 dev->name, rx_frame.count, rx_frame.status,
1480 ei_local->stat.rx_errors++;
1481 ei_local->stat.rx_length_errors++;
1483 else if ((pkt_stat & 0x0F) == ENRSR_RXOK)
1485 struct sk_buff *skb;
1487 skb = dev_alloc_skb(pkt_len+2);
1491 printk(KERN_DEBUG "%s: Couldn't allocate a sk_buff of size %d.\n",
1492 dev->name, pkt_len);
1493 ei_local->stat.rx_dropped++;
1498 skb_reserve(skb,2); /* IP headers on 16 byte boundaries */
1500 skb_put(skb, pkt_len); /* Make room */
1501 ei_block_input(dev, pkt_len, skb, current_offset + sizeof(rx_frame));
1502 skb->protocol=eth_type_trans(skb,dev);
1504 dev->last_rx = jiffies;
1505 ei_local->stat.rx_packets++;
1506 ei_local->stat.rx_bytes += pkt_len;
1507 if (pkt_stat & ENRSR_PHY)
1508 ei_local->stat.multicast++;
1514 printk(KERN_DEBUG "%s: bogus packet: status=%#2x nxpg=%#2x size=%d\n",
1515 dev->name, rx_frame.status, rx_frame.next,
1517 ei_local->stat.rx_errors++;
1518 /* NB: The NIC counts CRC, frame and missed errors. */
1519 if (pkt_stat & ENRSR_FO)
1520 ei_local->stat.rx_fifo_errors++;
1522 next_frame = rx_frame.next;
1524 /* This _should_ never happen: it's here for avoiding bad clones. */
1525 if (next_frame >= ei_local->stop_page) {
1526 printk("%s: next frame inconsistency, %#2x\n", dev->name,
1528 next_frame = ei_local->rx_start_page;
1530 ei_local->current_page = next_frame;
1531 outb_p(next_frame-1, e8390_base+EN0_BOUNDARY);
1538 * ei_rx_overrun - handle receiver overrun
1539 * @dev: network device which threw exception
1541 * We have a receiver overrun: we have to kick the 8390 to get it started
1542 * again. Problem is that you have to kick it exactly as NS prescribes in
1543 * the updated datasheets, or "the NIC may act in an unpredictable manner."
1544 * This includes causing "the NIC to defer indefinitely when it is stopped
1545 * on a busy network." Ugh.
1546 * Called with lock held. Don't call this with the interrupts off or your
1547 * computer will hate you - it takes 10ms or so.
1550 static void ei_rx_overrun(struct net_device *dev)
1552 axnet_dev_t *info = PRIV(dev);
1553 long e8390_base = dev->base_addr;
1554 unsigned char was_txing, must_resend = 0;
1555 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1558 * Record whether a Tx was in progress and then issue the
1561 was_txing = inb_p(e8390_base+E8390_CMD) & E8390_TRANS;
1562 outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD);
1565 printk(KERN_DEBUG "%s: Receiver overrun.\n", dev->name);
1566 ei_local->stat.rx_over_errors++;
1569 * Wait a full Tx time (1.2ms) + some guard time, NS says 1.6ms total.
1570 * Early datasheets said to poll the reset bit, but now they say that
1571 * it "is not a reliable indicator and subsequently should be ignored."
1572 * We wait at least 10ms.
1578 * Reset RBCR[01] back to zero as per magic incantation.
1580 outb_p(0x00, e8390_base+EN0_RCNTLO);
1581 outb_p(0x00, e8390_base+EN0_RCNTHI);
1584 * See if any Tx was interrupted or not. According to NS, this
1585 * step is vital, and skipping it will cause no end of havoc.
1590 unsigned char tx_completed = inb_p(e8390_base+EN0_ISR) & (ENISR_TX+ENISR_TX_ERR);
1596 * Have to enter loopback mode and then restart the NIC before
1597 * you are allowed to slurp packets up off the ring.
1599 outb_p(E8390_TXOFF, e8390_base + EN0_TXCR);
1600 outb_p(E8390_NODMA + E8390_PAGE0 + E8390_START, e8390_base + E8390_CMD);
1603 * Clear the Rx ring of all the debris, and ack the interrupt.
1608 * Leave loopback mode, and resend any packet that got stopped.
1610 outb_p(E8390_TXCONFIG | info->duplex_flag, e8390_base + EN0_TXCR);
1612 outb_p(E8390_NODMA + E8390_PAGE0 + E8390_START + E8390_TRANS, e8390_base + E8390_CMD);
1616 * Collect the stats. This is called unlocked and from several contexts.
1619 static struct net_device_stats *get_stats(struct net_device *dev)
1621 long ioaddr = dev->base_addr;
1622 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1623 unsigned long flags;
1625 /* If the card is stopped, just return the present stats. */
1626 if (!netif_running(dev))
1627 return &ei_local->stat;
1629 spin_lock_irqsave(&ei_local->page_lock,flags);
1630 /* Read the counter registers, assuming we are in page 0. */
1631 ei_local->stat.rx_frame_errors += inb_p(ioaddr + EN0_COUNTER0);
1632 ei_local->stat.rx_crc_errors += inb_p(ioaddr + EN0_COUNTER1);
1633 ei_local->stat.rx_missed_errors+= inb_p(ioaddr + EN0_COUNTER2);
1634 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1636 return &ei_local->stat;
1640 * Form the 64 bit 8390 multicast table from the linked list of addresses
1641 * associated with this dev structure.
1644 static inline void make_mc_bits(u8 *bits, struct net_device *dev)
1646 struct dev_mc_list *dmi;
1649 for (dmi=dev->mc_list; dmi; dmi=dmi->next) {
1651 crc = ether_crc(ETH_ALEN, dmi->dmi_addr);
1653 * The 8390 uses the 6 most significant bits of the
1654 * CRC to index the multicast table.
1656 bits[crc>>29] |= (1<<((crc>>26)&7));
1661 * do_set_multicast_list - set/clear multicast filter
1662 * @dev: net device for which multicast filter is adjusted
1664 * Set or clear the multicast filter for this adaptor.
1665 * Must be called with lock held.
1668 static void do_set_multicast_list(struct net_device *dev)
1670 long e8390_base = dev->base_addr;
1672 struct ei_device *ei_local = (struct ei_device*)netdev_priv(dev);
1674 if (!(dev->flags&(IFF_PROMISC|IFF_ALLMULTI))) {
1675 memset(ei_local->mcfilter, 0, 8);
1677 make_mc_bits(ei_local->mcfilter, dev);
1679 /* set to accept-all */
1680 memset(ei_local->mcfilter, 0xFF, 8);
1683 outb_p(E8390_NODMA + E8390_PAGE1, e8390_base + E8390_CMD);
1684 for(i = 0; i < 8; i++)
1686 outb_p(ei_local->mcfilter[i], e8390_base + EN1_MULT_SHIFT(i));
1688 outb_p(E8390_NODMA + E8390_PAGE0, e8390_base + E8390_CMD);
1690 if(dev->flags&IFF_PROMISC)
1691 outb_p(E8390_RXCONFIG | 0x58, e8390_base + EN0_RXCR);
1692 else if(dev->flags&IFF_ALLMULTI || dev->mc_list)
1693 outb_p(E8390_RXCONFIG | 0x48, e8390_base + EN0_RXCR);
1695 outb_p(E8390_RXCONFIG | 0x40, e8390_base + EN0_RXCR);
1697 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, e8390_base+E8390_CMD);
1701 * Called without lock held. This is invoked from user context and may
1702 * be parallel to just about everything else. Its also fairly quick and
1703 * not called too often. Must protect against both bh and irq users
1706 static void set_multicast_list(struct net_device *dev)
1708 unsigned long flags;
1710 spin_lock_irqsave(&dev_lock(dev), flags);
1711 do_set_multicast_list(dev);
1712 spin_unlock_irqrestore(&dev_lock(dev), flags);
1716 * axdev_setup - init rest of 8390 device struct
1717 * @dev: network device structure to init
1719 * Initialize the rest of the 8390 device structure. Do NOT __init
1720 * this, as it is used by 8390 based modular drivers too.
1723 static void axdev_setup(struct net_device *dev)
1725 struct ei_device *ei_local;
1727 printk(version_8390);
1729 SET_MODULE_OWNER(dev);
1732 ei_local = (struct ei_device *)netdev_priv(dev);
1733 spin_lock_init(&ei_local->page_lock);
1735 dev->hard_start_xmit = &ei_start_xmit;
1736 dev->get_stats = get_stats;
1737 dev->set_multicast_list = &set_multicast_list;
1742 /* This page of functions should be 8390 generic */
1743 /* Follow National Semi's recommendations for initializing the "NIC". */
1746 * AX88190_init - initialize 8390 hardware
1747 * @dev: network device to initialize
1748 * @startp: boolean. non-zero value to initiate chip processing
1750 * Must be called with lock held.
1753 static void AX88190_init(struct net_device *dev, int startp)
1755 axnet_dev_t *info = PRIV(dev);
1756 long e8390_base = dev->base_addr;
1757 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1759 int endcfg = ei_local->word16 ? (0x48 | ENDCFG_WTS) : 0x48;
1761 if(sizeof(struct e8390_pkt_hdr)!=4)
1762 panic("8390.c: header struct mispacked\n");
1763 /* Follow National Semi's recommendations for initing the DP83902. */
1764 outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD); /* 0x21 */
1765 outb_p(endcfg, e8390_base + EN0_DCFG); /* 0x48 or 0x49 */
1766 /* Clear the remote byte count registers. */
1767 outb_p(0x00, e8390_base + EN0_RCNTLO);
1768 outb_p(0x00, e8390_base + EN0_RCNTHI);
1769 /* Set to monitor and loopback mode -- this is vital!. */
1770 outb_p(E8390_RXOFF|0x40, e8390_base + EN0_RXCR); /* 0x60 */
1771 outb_p(E8390_TXOFF, e8390_base + EN0_TXCR); /* 0x02 */
1772 /* Set the transmit page and receive ring. */
1773 outb_p(ei_local->tx_start_page, e8390_base + EN0_TPSR);
1774 ei_local->tx1 = ei_local->tx2 = 0;
1775 outb_p(ei_local->rx_start_page, e8390_base + EN0_STARTPG);
1776 outb_p(ei_local->stop_page-1, e8390_base + EN0_BOUNDARY); /* 3c503 says 0x3f,NS0x26*/
1777 ei_local->current_page = ei_local->rx_start_page; /* assert boundary+1 */
1778 outb_p(ei_local->stop_page, e8390_base + EN0_STOPPG);
1779 /* Clear the pending interrupts and mask. */
1780 outb_p(0xFF, e8390_base + EN0_ISR);
1781 outb_p(0x00, e8390_base + EN0_IMR);
1783 /* Copy the station address into the DS8390 registers. */
1785 outb_p(E8390_NODMA + E8390_PAGE1 + E8390_STOP, e8390_base+E8390_CMD); /* 0x61 */
1786 for(i = 0; i < 6; i++)
1788 outb_p(dev->dev_addr[i], e8390_base + EN1_PHYS_SHIFT(i));
1789 if(inb_p(e8390_base + EN1_PHYS_SHIFT(i))!=dev->dev_addr[i])
1790 printk(KERN_ERR "Hw. address read/write mismap %d\n",i);
1793 outb_p(ei_local->rx_start_page, e8390_base + EN1_CURPAG);
1794 outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD);
1796 netif_start_queue(dev);
1797 ei_local->tx1 = ei_local->tx2 = 0;
1798 ei_local->txing = 0;
1802 outb_p(0xff, e8390_base + EN0_ISR);
1803 outb_p(ENISR_ALL, e8390_base + EN0_IMR);
1804 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, e8390_base+E8390_CMD);
1805 outb_p(E8390_TXCONFIG | info->duplex_flag,
1806 e8390_base + EN0_TXCR); /* xmit on. */
1807 /* 3c503 TechMan says rxconfig only after the NIC is started. */
1808 outb_p(E8390_RXCONFIG | 0x40, e8390_base + EN0_RXCR); /* rx on, */
1809 do_set_multicast_list(dev); /* (re)load the mcast table */
1813 /* Trigger a transmit start, assuming the length is valid.
1814 Always called with the page lock held */
1816 static void NS8390_trigger_send(struct net_device *dev, unsigned int length,
1819 long e8390_base = dev->base_addr;
1820 struct ei_device *ei_local __attribute((unused)) = (struct ei_device *) netdev_priv(dev);
1822 if (inb_p(e8390_base) & E8390_TRANS)
1824 printk(KERN_WARNING "%s: trigger_send() called with the transmitter busy.\n",
1828 outb_p(length & 0xff, e8390_base + EN0_TCNTLO);
1829 outb_p(length >> 8, e8390_base + EN0_TCNTHI);
1830 outb_p(start_page, e8390_base + EN0_TPSR);
1831 outb_p(E8390_NODMA+E8390_TRANS+E8390_START, e8390_base+E8390_CMD);