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 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
29 #include <linux/kernel.h>
30 #include <linux/module.h>
31 #include <linux/init.h>
32 #include <linux/ptrace.h>
33 #include <linux/string.h>
34 #include <linux/timer.h>
35 #include <linux/delay.h>
36 #include <linux/spinlock.h>
37 #include <linux/netdevice.h>
38 #include <linux/etherdevice.h>
39 #include <linux/crc32.h>
40 #include <linux/mii.h>
43 #include <pcmcia/cs.h>
44 #include <pcmcia/cistpl.h>
45 #include <pcmcia/ciscode.h>
46 #include <pcmcia/ds.h>
47 #include <pcmcia/cisreg.h>
50 #include <asm/system.h>
51 #include <asm/byteorder.h>
52 #include <asm/uaccess.h>
54 #define AXNET_CMD 0x00
55 #define AXNET_DATAPORT 0x10 /* NatSemi-defined port window offset. */
56 #define AXNET_RESET 0x1f /* Issue a read to reset, a write to clear. */
57 #define AXNET_MII_EEP 0x14 /* Offset of MII access port */
58 #define AXNET_TEST 0x15 /* Offset of TEST Register port */
59 #define AXNET_GPIO 0x17 /* Offset of General Purpose Register Port */
61 #define AXNET_START_PG 0x40 /* First page of TX buffer */
62 #define AXNET_STOP_PG 0x80 /* Last page +1 of RX ring */
64 #define AXNET_RDC_TIMEOUT 0x02 /* Max wait in jiffies for Tx RDC */
66 #define IS_AX88190 0x0001
67 #define IS_AX88790 0x0002
69 /*====================================================================*/
71 /* Module parameters */
73 MODULE_AUTHOR("David Hinds <dahinds@users.sourceforge.net>");
74 MODULE_DESCRIPTION("Asix AX88190 PCMCIA ethernet driver");
75 MODULE_LICENSE("GPL");
78 /*====================================================================*/
80 static int axnet_config(struct pcmcia_device *link);
81 static void axnet_release(struct pcmcia_device *link);
82 static int axnet_open(struct net_device *dev);
83 static int axnet_close(struct net_device *dev);
84 static int axnet_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
85 static netdev_tx_t axnet_start_xmit(struct sk_buff *skb,
86 struct net_device *dev);
87 static struct net_device_stats *get_stats(struct net_device *dev);
88 static void set_multicast_list(struct net_device *dev);
89 static void axnet_tx_timeout(struct net_device *dev);
90 static irqreturn_t ei_irq_wrapper(int irq, void *dev_id);
91 static void ei_watchdog(u_long arg);
92 static void axnet_reset_8390(struct net_device *dev);
94 static int mdio_read(unsigned int addr, int phy_id, int loc);
95 static void mdio_write(unsigned int addr, int phy_id, int loc, int value);
97 static void get_8390_hdr(struct net_device *,
98 struct e8390_pkt_hdr *, int);
99 static void block_input(struct net_device *dev, int count,
100 struct sk_buff *skb, int ring_offset);
101 static void block_output(struct net_device *dev, int count,
102 const u_char *buf, const int start_page);
104 static void axnet_detach(struct pcmcia_device *p_dev);
106 static void AX88190_init(struct net_device *dev, int startp);
107 static int ax_open(struct net_device *dev);
108 static int ax_close(struct net_device *dev);
109 static irqreturn_t ax_interrupt(int irq, void *dev_id);
111 /*====================================================================*/
113 typedef struct axnet_dev_t {
114 struct pcmcia_device *p_dev;
116 struct timer_list watchdog;
117 int stale, fast_poll;
124 static inline axnet_dev_t *PRIV(struct net_device *dev)
126 void *p = (char *)netdev_priv(dev) + sizeof(struct ei_device);
130 static const struct net_device_ops axnet_netdev_ops = {
131 .ndo_open = axnet_open,
132 .ndo_stop = axnet_close,
133 .ndo_do_ioctl = axnet_ioctl,
134 .ndo_start_xmit = axnet_start_xmit,
135 .ndo_tx_timeout = axnet_tx_timeout,
136 .ndo_get_stats = get_stats,
137 .ndo_set_multicast_list = set_multicast_list,
138 .ndo_change_mtu = eth_change_mtu,
139 .ndo_set_mac_address = eth_mac_addr,
140 .ndo_validate_addr = eth_validate_addr,
143 /*======================================================================
145 axnet_attach() creates an "instance" of the driver, allocating
146 local data structures for one device. The device is registered
149 ======================================================================*/
151 static int axnet_probe(struct pcmcia_device *link)
154 struct net_device *dev;
155 struct ei_device *ei_local;
157 dev_dbg(&link->dev, "axnet_attach()\n");
159 dev = alloc_etherdev(sizeof(struct ei_device) + sizeof(axnet_dev_t));
163 ei_local = netdev_priv(dev);
164 spin_lock_init(&ei_local->page_lock);
169 link->conf.Attributes = CONF_ENABLE_IRQ;
170 link->conf.IntType = INT_MEMORY_AND_IO;
172 dev->netdev_ops = &axnet_netdev_ops;
174 dev->watchdog_timeo = TX_TIMEOUT;
176 return axnet_config(link);
179 /*======================================================================
181 This deletes a driver "instance". The device is de-registered
182 with Card Services. If it has been released, all local data
183 structures are freed. Otherwise, the structures will be freed
184 when the device is released.
186 ======================================================================*/
188 static void axnet_detach(struct pcmcia_device *link)
190 struct net_device *dev = link->priv;
192 dev_dbg(&link->dev, "axnet_detach(0x%p)\n", link);
194 unregister_netdev(dev);
201 /*======================================================================
203 This probes for a card's hardware address by reading the PROM.
205 ======================================================================*/
207 static int get_prom(struct pcmcia_device *link)
209 struct net_device *dev = link->priv;
210 unsigned int ioaddr = dev->base_addr;
213 /* This is based on drivers/net/ne.c */
215 u_char value, offset;
217 {E8390_NODMA+E8390_PAGE0+E8390_STOP, E8390_CMD}, /* Select page 0*/
218 {0x01, EN0_DCFG}, /* Set word-wide access. */
219 {0x00, EN0_RCNTLO}, /* Clear the count regs. */
221 {0x00, EN0_IMR}, /* Mask completion irq. */
223 {E8390_RXOFF|0x40, EN0_RXCR}, /* 0x60 Set to monitor */
224 {E8390_TXOFF, EN0_TXCR}, /* 0x02 and loopback mode. */
227 {0x00, EN0_RSARLO}, /* DMA starting at 0x0400. */
229 {E8390_RREAD+E8390_START, E8390_CMD},
232 /* Not much of a test, but the alternatives are messy */
233 if (link->conf.ConfigBase != 0x03c0)
236 axnet_reset_8390(dev);
239 for (i = 0; i < ARRAY_SIZE(program_seq); i++)
240 outb_p(program_seq[i].value, ioaddr + program_seq[i].offset);
242 for (i = 0; i < 6; i += 2) {
243 j = inw(ioaddr + AXNET_DATAPORT);
244 dev->dev_addr[i] = j & 0xff;
245 dev->dev_addr[i+1] = j >> 8;
250 /*======================================================================
252 axnet_config() is scheduled to run after a CARD_INSERTION event
253 is received, to configure the PCMCIA socket, and to make the
254 ethernet device available to the system.
256 ======================================================================*/
258 static int try_io_port(struct pcmcia_device *link)
261 link->resource[0]->flags &= ~IO_DATA_PATH_WIDTH;
262 link->resource[1]->flags &= ~IO_DATA_PATH_WIDTH;
263 if (link->resource[0]->end == 32) {
264 link->resource[0]->flags |= IO_DATA_PATH_WIDTH_AUTO;
265 /* for master/slave multifunction cards */
266 if (link->resource[1]->end > 0)
267 link->resource[1]->flags |= IO_DATA_PATH_WIDTH_8;
269 /* This should be two 16-port windows */
270 link->resource[0]->flags |= IO_DATA_PATH_WIDTH_8;
271 link->resource[1]->flags |= IO_DATA_PATH_WIDTH_16;
273 if (link->resource[0]->start == 0) {
274 for (j = 0; j < 0x400; j += 0x20) {
275 link->resource[0]->start = j ^ 0x300;
276 link->resource[1]->start = (j ^ 0x300) + 0x10;
278 ret = pcmcia_request_io(link);
284 return pcmcia_request_io(link);
288 static int axnet_configcheck(struct pcmcia_device *p_dev,
289 cistpl_cftable_entry_t *cfg,
290 cistpl_cftable_entry_t *dflt,
295 cistpl_io_t *io = &cfg->io;
297 if (cfg->index == 0 || cfg->io.nwin == 0)
300 p_dev->conf.ConfigIndex = 0x05;
301 /* For multifunction cards, by convention, we configure the
302 network function with window 0, and serial with window 1 */
304 i = (io->win[1].len > io->win[0].len);
305 p_dev->resource[1]->start = io->win[1-i].base;
306 p_dev->resource[1]->end = io->win[1-i].len;
308 i = p_dev->resource[1]->end = 0;
310 p_dev->resource[0]->start = io->win[i].base;
311 p_dev->resource[0]->end = io->win[i].len;
312 p_dev->io_lines = io->flags & CISTPL_IO_LINES_MASK;
313 if (p_dev->resource[0]->end + p_dev->resource[1]->end >= 32)
314 return try_io_port(p_dev);
319 static int axnet_config(struct pcmcia_device *link)
321 struct net_device *dev = link->priv;
322 axnet_dev_t *info = PRIV(dev);
325 dev_dbg(&link->dev, "axnet_config(0x%p)\n", link);
327 /* don't trust the CIS on this; Linksys got it wrong */
328 link->conf.Present = 0x63;
329 ret = pcmcia_loop_config(link, axnet_configcheck, NULL);
336 if (resource_size(link->resource[1]) == 8) {
337 link->conf.Attributes |= CONF_ENABLE_SPKR;
338 link->conf.Status = CCSR_AUDIO_ENA;
341 ret = pcmcia_request_configuration(link, &link->conf);
345 dev->irq = link->irq;
346 dev->base_addr = link->resource[0]->start;
348 if (!get_prom(link)) {
349 pr_notice("this is not an AX88190 card!\n");
350 pr_notice("use pcnet_cs instead.\n");
354 ei_status.name = "AX88190";
355 ei_status.word16 = 1;
356 ei_status.tx_start_page = AXNET_START_PG;
357 ei_status.rx_start_page = AXNET_START_PG + TX_PAGES;
358 ei_status.stop_page = AXNET_STOP_PG;
359 ei_status.reset_8390 = axnet_reset_8390;
360 ei_status.get_8390_hdr = get_8390_hdr;
361 ei_status.block_input = block_input;
362 ei_status.block_output = block_output;
364 if (inb(dev->base_addr + AXNET_TEST) != 0)
365 info->flags |= IS_AX88790;
367 info->flags |= IS_AX88190;
369 if (info->flags & IS_AX88790)
370 outb(0x10, dev->base_addr + AXNET_GPIO); /* select Internal PHY */
372 for (i = 0; i < 32; i++) {
373 j = mdio_read(dev->base_addr + AXNET_MII_EEP, i, 1);
374 j2 = mdio_read(dev->base_addr + AXNET_MII_EEP, i, 2);
375 if (j == j2) continue;
376 if ((j != 0) && (j != 0xffff)) break;
379 /* Maybe PHY is in power down mode. (PPD_SET = 1)
380 Bit 2 of CCSR is active low. */
382 pcmcia_write_config_byte(link, CISREG_CCSR, 0x04);
383 for (i = 0; i < 32; i++) {
384 j = mdio_read(dev->base_addr + AXNET_MII_EEP, i, 1);
385 j2 = mdio_read(dev->base_addr + AXNET_MII_EEP, i, 2);
386 if (j == j2) continue;
387 if ((j != 0) && (j != 0xffff)) break;
391 info->phy_id = (i < 32) ? i : -1;
392 SET_NETDEV_DEV(dev, &link->dev);
394 if (register_netdev(dev) != 0) {
395 pr_notice("register_netdev() failed\n");
399 netdev_info(dev, "Asix AX88%d90: io %#3lx, irq %d, hw_addr %pM\n",
400 ((info->flags & IS_AX88790) ? 7 : 1),
401 dev->base_addr, dev->irq, dev->dev_addr);
402 if (info->phy_id != -1) {
403 netdev_dbg(dev, " MII transceiver at index %d, status %x\n",
406 netdev_notice(dev, " No MII transceivers found!\n");
415 /*======================================================================
417 After a card is removed, axnet_release() will unregister the net
418 device, and release the PCMCIA configuration. If the device is
419 still open, this will be postponed until it is closed.
421 ======================================================================*/
423 static void axnet_release(struct pcmcia_device *link)
425 pcmcia_disable_device(link);
428 static int axnet_suspend(struct pcmcia_device *link)
430 struct net_device *dev = link->priv;
433 netif_device_detach(dev);
438 static int axnet_resume(struct pcmcia_device *link)
440 struct net_device *dev = link->priv;
443 axnet_reset_8390(dev);
444 AX88190_init(dev, 1);
445 netif_device_attach(dev);
452 /*======================================================================
454 MII interface support
456 ======================================================================*/
458 #define MDIO_SHIFT_CLK 0x01
459 #define MDIO_DATA_WRITE0 0x00
460 #define MDIO_DATA_WRITE1 0x08
461 #define MDIO_DATA_READ 0x04
462 #define MDIO_MASK 0x0f
463 #define MDIO_ENB_IN 0x02
465 static void mdio_sync(unsigned int addr)
468 for (bits = 0; bits < 32; bits++) {
469 outb_p(MDIO_DATA_WRITE1, addr);
470 outb_p(MDIO_DATA_WRITE1 | MDIO_SHIFT_CLK, addr);
474 static int mdio_read(unsigned int addr, int phy_id, int loc)
476 u_int cmd = (0xf6<<10)|(phy_id<<5)|loc;
480 for (i = 14; i >= 0; i--) {
481 int dat = (cmd&(1<<i)) ? MDIO_DATA_WRITE1 : MDIO_DATA_WRITE0;
483 outb_p(dat | MDIO_SHIFT_CLK, addr);
485 for (i = 19; i > 0; i--) {
486 outb_p(MDIO_ENB_IN, addr);
487 retval = (retval << 1) | ((inb_p(addr) & MDIO_DATA_READ) != 0);
488 outb_p(MDIO_ENB_IN | MDIO_SHIFT_CLK, addr);
490 return (retval>>1) & 0xffff;
493 static void mdio_write(unsigned int addr, int phy_id, int loc, int value)
495 u_int cmd = (0x05<<28)|(phy_id<<23)|(loc<<18)|(1<<17)|value;
499 for (i = 31; i >= 0; i--) {
500 int dat = (cmd&(1<<i)) ? MDIO_DATA_WRITE1 : MDIO_DATA_WRITE0;
502 outb_p(dat | MDIO_SHIFT_CLK, addr);
504 for (i = 1; i >= 0; i--) {
505 outb_p(MDIO_ENB_IN, addr);
506 outb_p(MDIO_ENB_IN | MDIO_SHIFT_CLK, addr);
510 /*====================================================================*/
512 static int axnet_open(struct net_device *dev)
515 axnet_dev_t *info = PRIV(dev);
516 struct pcmcia_device *link = info->p_dev;
517 unsigned int nic_base = dev->base_addr;
519 dev_dbg(&link->dev, "axnet_open('%s')\n", dev->name);
521 if (!pcmcia_dev_present(link))
524 outb_p(0xFF, nic_base + EN0_ISR); /* Clear bogus intr. */
525 ret = request_irq(dev->irq, ei_irq_wrapper, IRQF_SHARED, "axnet_cs", dev);
531 info->link_status = 0x00;
532 init_timer(&info->watchdog);
533 info->watchdog.function = ei_watchdog;
534 info->watchdog.data = (u_long)dev;
535 info->watchdog.expires = jiffies + HZ;
536 add_timer(&info->watchdog);
541 /*====================================================================*/
543 static int axnet_close(struct net_device *dev)
545 axnet_dev_t *info = PRIV(dev);
546 struct pcmcia_device *link = info->p_dev;
548 dev_dbg(&link->dev, "axnet_close('%s')\n", dev->name);
551 free_irq(dev->irq, dev);
554 netif_stop_queue(dev);
555 del_timer_sync(&info->watchdog);
560 /*======================================================================
562 Hard reset the card. This used to pause for the same period that
563 a 8390 reset command required, but that shouldn't be necessary.
565 ======================================================================*/
567 static void axnet_reset_8390(struct net_device *dev)
569 unsigned int nic_base = dev->base_addr;
572 ei_status.txing = ei_status.dmaing = 0;
574 outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, nic_base + E8390_CMD);
576 outb(inb(nic_base + AXNET_RESET), nic_base + AXNET_RESET);
578 for (i = 0; i < 100; i++) {
579 if ((inb_p(nic_base+EN0_ISR) & ENISR_RESET) != 0)
583 outb_p(ENISR_RESET, nic_base + EN0_ISR); /* Ack intr. */
586 netdev_err(dev, "axnet_reset_8390() did not complete\n");
588 } /* axnet_reset_8390 */
590 /*====================================================================*/
592 static irqreturn_t ei_irq_wrapper(int irq, void *dev_id)
594 struct net_device *dev = dev_id;
595 PRIV(dev)->stale = 0;
596 return ax_interrupt(irq, dev_id);
599 static void ei_watchdog(u_long arg)
601 struct net_device *dev = (struct net_device *)(arg);
602 axnet_dev_t *info = PRIV(dev);
603 unsigned int nic_base = dev->base_addr;
604 unsigned int mii_addr = nic_base + AXNET_MII_EEP;
607 if (!netif_device_present(dev)) goto reschedule;
609 /* Check for pending interrupt with expired latency timer: with
610 this, we can limp along even if the interrupt is blocked */
611 if (info->stale++ && (inb_p(nic_base + EN0_ISR) & ENISR_ALL)) {
612 if (!info->fast_poll)
613 netdev_info(dev, "interrupt(s) dropped!\n");
614 ei_irq_wrapper(dev->irq, dev);
615 info->fast_poll = HZ;
617 if (info->fast_poll) {
619 info->watchdog.expires = jiffies + 1;
620 add_timer(&info->watchdog);
624 if (info->phy_id < 0)
626 link = mdio_read(mii_addr, info->phy_id, 1);
627 if (!link || (link == 0xffff)) {
628 netdev_info(dev, "MII is missing!\n");
634 if (link != info->link_status) {
635 u_short p = mdio_read(mii_addr, info->phy_id, 5);
636 netdev_info(dev, "%s link beat\n", link ? "found" : "lost");
638 info->duplex_flag = (p & 0x0140) ? 0x80 : 0x00;
640 netdev_info(dev, "autonegotiation complete: %dbaseT-%cD selected\n",
641 (p & 0x0180) ? 100 : 10, (p & 0x0140) ? 'F' : 'H');
643 netdev_info(dev, "link partner did not autonegotiate\n");
644 AX88190_init(dev, 1);
646 info->link_status = link;
650 info->watchdog.expires = jiffies + HZ;
651 add_timer(&info->watchdog);
654 /*====================================================================*/
656 static int axnet_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
658 axnet_dev_t *info = PRIV(dev);
659 struct mii_ioctl_data *data = if_mii(rq);
660 unsigned int mii_addr = dev->base_addr + AXNET_MII_EEP;
663 data->phy_id = info->phy_id;
664 case SIOCGMIIREG: /* Read MII PHY register. */
665 data->val_out = mdio_read(mii_addr, data->phy_id, data->reg_num & 0x1f);
667 case SIOCSMIIREG: /* Write MII PHY register. */
668 mdio_write(mii_addr, data->phy_id, data->reg_num & 0x1f, data->val_in);
674 /*====================================================================*/
676 static void get_8390_hdr(struct net_device *dev,
677 struct e8390_pkt_hdr *hdr,
680 unsigned int nic_base = dev->base_addr;
682 outb_p(0, nic_base + EN0_RSARLO); /* On page boundary */
683 outb_p(ring_page, nic_base + EN0_RSARHI);
684 outb_p(E8390_RREAD+E8390_START, nic_base + AXNET_CMD);
686 insw(nic_base + AXNET_DATAPORT, hdr,
687 sizeof(struct e8390_pkt_hdr)>>1);
688 /* Fix for big endian systems */
689 hdr->count = le16_to_cpu(hdr->count);
693 /*====================================================================*/
695 static void block_input(struct net_device *dev, int count,
696 struct sk_buff *skb, int ring_offset)
698 unsigned int nic_base = dev->base_addr;
699 int xfer_count = count;
700 char *buf = skb->data;
702 if ((ei_debug > 4) && (count != 4))
703 pr_debug("%s: [bi=%d]\n", dev->name, count+4);
704 outb_p(ring_offset & 0xff, nic_base + EN0_RSARLO);
705 outb_p(ring_offset >> 8, nic_base + EN0_RSARHI);
706 outb_p(E8390_RREAD+E8390_START, nic_base + AXNET_CMD);
708 insw(nic_base + AXNET_DATAPORT,buf,count>>1);
710 buf[count-1] = inb(nic_base + AXNET_DATAPORT), xfer_count++;
714 /*====================================================================*/
716 static void block_output(struct net_device *dev, int count,
717 const u_char *buf, const int start_page)
719 unsigned int nic_base = dev->base_addr;
721 pr_debug("%s: [bo=%d]\n", dev->name, count);
723 /* Round the count up for word writes. Do we need to do this?
724 What effect will an odd byte count have on the 8390?
725 I should check someday. */
729 outb_p(0x00, nic_base + EN0_RSARLO);
730 outb_p(start_page, nic_base + EN0_RSARHI);
731 outb_p(E8390_RWRITE+E8390_START, nic_base + AXNET_CMD);
732 outsw(nic_base + AXNET_DATAPORT, buf, count>>1);
735 static struct pcmcia_device_id axnet_ids[] = {
736 PCMCIA_PFC_DEVICE_MANF_CARD(0, 0x016c, 0x0081),
737 PCMCIA_DEVICE_MANF_CARD(0x018a, 0x0301),
738 PCMCIA_DEVICE_MANF_CARD(0x026f, 0x0301),
739 PCMCIA_DEVICE_MANF_CARD(0x026f, 0x0303),
740 PCMCIA_DEVICE_MANF_CARD(0x026f, 0x0309),
741 PCMCIA_DEVICE_MANF_CARD(0x0274, 0x1106),
742 PCMCIA_DEVICE_MANF_CARD(0x8a01, 0xc1ab),
743 PCMCIA_DEVICE_MANF_CARD(0x021b, 0x0202),
744 PCMCIA_DEVICE_MANF_CARD(0xffff, 0x1090),
745 PCMCIA_DEVICE_PROD_ID12("AmbiCom,Inc.", "Fast Ethernet PC Card(AMB8110)", 0x49b020a7, 0x119cc9fc),
746 PCMCIA_DEVICE_PROD_ID124("Fast Ethernet", "16-bit PC Card", "AX88190", 0xb4be14e3, 0x9a12eb6a, 0xab9be5ef),
747 PCMCIA_DEVICE_PROD_ID12("ASIX", "AX88190", 0x0959823b, 0xab9be5ef),
748 PCMCIA_DEVICE_PROD_ID12("Billionton", "LNA-100B", 0x552ab682, 0xbc3b87e1),
749 PCMCIA_DEVICE_PROD_ID12("CHEETAH ETHERCARD", "EN2228", 0x00fa7bc8, 0x00e990cc),
750 PCMCIA_DEVICE_PROD_ID12("CNet", "CNF301", 0xbc477dde, 0x78c5f40b),
751 PCMCIA_DEVICE_PROD_ID12("corega K.K.", "corega FEther PCC-TXD", 0x5261440f, 0x436768c5),
752 PCMCIA_DEVICE_PROD_ID12("corega K.K.", "corega FEtherII PCC-TXD", 0x5261440f, 0x730df72e),
753 PCMCIA_DEVICE_PROD_ID12("corega K.K.", "corega FEther PCC-TXM", 0x5261440f, 0x3abbd061),
754 PCMCIA_DEVICE_PROD_ID12("Dynalink", "L100C16", 0x55632fd5, 0x66bc2a90),
755 PCMCIA_DEVICE_PROD_ID12("IO DATA", "ETXPCM", 0x547e66dc, 0x233adac2),
756 PCMCIA_DEVICE_PROD_ID12("Linksys", "EtherFast 10/100 PC Card (PCMPC100 V3)", 0x0733cc81, 0x232019a8),
757 PCMCIA_DEVICE_PROD_ID12("MELCO", "LPC3-TX", 0x481e0094, 0xf91af609),
758 PCMCIA_DEVICE_PROD_ID12("NETGEAR", "FA411", 0x9aa79dc3, 0x40fad875),
759 PCMCIA_DEVICE_PROD_ID12("PCMCIA", "100BASE", 0x281f1c5d, 0x7c2add04),
760 PCMCIA_DEVICE_PROD_ID12("PCMCIA", "FastEtherCard", 0x281f1c5d, 0x7ef26116),
761 PCMCIA_DEVICE_PROD_ID12("PCMCIA", "FEP501", 0x281f1c5d, 0x2e272058),
762 PCMCIA_DEVICE_PROD_ID14("Network Everywhere", "AX88190", 0x820a67b6, 0xab9be5ef),
765 MODULE_DEVICE_TABLE(pcmcia, axnet_ids);
767 static struct pcmcia_driver axnet_cs_driver = {
768 .owner = THIS_MODULE,
772 .probe = axnet_probe,
773 .remove = axnet_detach,
774 .id_table = axnet_ids,
775 .suspend = axnet_suspend,
776 .resume = axnet_resume,
779 static int __init init_axnet_cs(void)
781 return pcmcia_register_driver(&axnet_cs_driver);
784 static void __exit exit_axnet_cs(void)
786 pcmcia_unregister_driver(&axnet_cs_driver);
789 module_init(init_axnet_cs);
790 module_exit(exit_axnet_cs);
792 /*====================================================================*/
794 /* 8390.c: A general NS8390 ethernet driver core for linux. */
796 Written 1992-94 by Donald Becker.
798 Copyright 1993 United States Government as represented by the
799 Director, National Security Agency.
801 This software may be used and distributed according to the terms
802 of the GNU General Public License, incorporated herein by reference.
804 The author may be reached as becker@scyld.com, or C/O
805 Scyld Computing Corporation
806 410 Severn Ave., Suite 210
809 This is the chip-specific code for many 8390-based ethernet adaptors.
810 This is not a complete driver, it must be combined with board-specific
811 code such as ne.c, wd.c, 3c503.c, etc.
813 Seeing how at least eight drivers use this code, (not counting the
814 PCMCIA ones either) it is easy to break some card by what seems like
815 a simple innocent change. Please contact me or Donald if you think
816 you have found something that needs changing. -- PG
820 Paul Gortmaker : remove set_bit lock, other cleanups.
821 Paul Gortmaker : add ei_get_8390_hdr() so we can pass skb's to
822 ei_block_input() for eth_io_copy_and_sum().
823 Paul Gortmaker : exchange static int ei_pingpong for a #define,
824 also add better Tx error handling.
825 Paul Gortmaker : rewrite Rx overrun handling as per NS specs.
826 Alexey Kuznetsov : use the 8390's six bit hash multicast filter.
827 Paul Gortmaker : tweak ANK's above multicast changes a bit.
828 Paul Gortmaker : update packet statistics for v2.1.x
829 Alan Cox : support arbitary stupid port mappings on the
830 68K Macintosh. Support >16bit I/O spaces
831 Paul Gortmaker : add kmod support for auto-loading of the 8390
832 module by all drivers that require it.
833 Alan Cox : Spinlocking work, added 'BUG_83C690'
834 Paul Gortmaker : Separate out Tx timeout code from Tx path.
837 The National Semiconductor LAN Databook, and the 3Com 3c503 databook.
841 #include <linux/bitops.h>
843 #include <linux/fcntl.h>
844 #include <linux/in.h>
845 #include <linux/interrupt.h>
849 /* These are the operational function interfaces to board-specific
851 void reset_8390(struct net_device *dev)
852 Resets the board associated with DEV, including a hardware reset of
853 the 8390. This is only called when there is a transmit timeout, and
854 it is always followed by 8390_init().
855 void block_output(struct net_device *dev, int count, const unsigned char *buf,
857 Write the COUNT bytes of BUF to the packet buffer at START_PAGE. The
858 "page" value uses the 8390's 256-byte pages.
859 void get_8390_hdr(struct net_device *dev, struct e8390_hdr *hdr, int ring_page)
860 Read the 4 byte, page aligned 8390 header. *If* there is a
861 subsequent read, it will be of the rest of the packet.
862 void block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset)
863 Read COUNT bytes from the packet buffer into the skb data area. Start
864 reading from RING_OFFSET, the address as the 8390 sees it. This will always
865 follow the read of the 8390 header.
867 #define ei_reset_8390 (ei_local->reset_8390)
868 #define ei_block_output (ei_local->block_output)
869 #define ei_block_input (ei_local->block_input)
870 #define ei_get_8390_hdr (ei_local->get_8390_hdr)
872 /* use 0 for production, 1 for verification, >2 for debug */
877 /* Index to functions. */
878 static void ei_tx_intr(struct net_device *dev);
879 static void ei_tx_err(struct net_device *dev);
880 static void ei_receive(struct net_device *dev);
881 static void ei_rx_overrun(struct net_device *dev);
883 /* Routines generic to NS8390-based boards. */
884 static void NS8390_trigger_send(struct net_device *dev, unsigned int length,
886 static void do_set_multicast_list(struct net_device *dev);
889 * SMP and the 8390 setup.
891 * The 8390 isnt exactly designed to be multithreaded on RX/TX. There is
892 * a page register that controls bank and packet buffer access. We guard
893 * this with ei_local->page_lock. Nobody should assume or set the page other
894 * than zero when the lock is not held. Lock holders must restore page 0
895 * before unlocking. Even pure readers must take the lock to protect in
898 * To make life difficult the chip can also be very slow. We therefore can't
899 * just use spinlocks. For the longer lockups we disable the irq the device
900 * sits on and hold the lock. We must hold the lock because there is a dual
901 * processor case other than interrupts (get stats/set multicast list in
902 * parallel with each other and transmit).
904 * Note: in theory we can just disable the irq on the card _but_ there is
905 * a latency on SMP irq delivery. So we can easily go "disable irq" "sync irqs"
906 * enter lock, take the queued irq. So we waddle instead of flying.
908 * Finally by special arrangement for the purpose of being generally
909 * annoying the transmit function is called bh atomic. That places
910 * restrictions on the user context callers as disable_irq won't save
915 * ax_open - Open/initialize the board.
916 * @dev: network device to initialize
918 * This routine goes all-out, setting everything
919 * up anew at each open, even though many of these registers should only
920 * need to be set once at boot.
922 static int ax_open(struct net_device *dev)
925 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
928 * Grab the page lock so we own the register set, then call
932 spin_lock_irqsave(&ei_local->page_lock, flags);
933 AX88190_init(dev, 1);
934 /* Set the flag before we drop the lock, That way the IRQ arrives
935 after its set and we get no silly warnings */
936 netif_start_queue(dev);
937 spin_unlock_irqrestore(&ei_local->page_lock, flags);
938 ei_local->irqlock = 0;
942 #define dev_lock(dev) (((struct ei_device *)netdev_priv(dev))->page_lock)
945 * ax_close - shut down network device
946 * @dev: network device to close
948 * Opposite of ax_open(). Only used when "ifconfig <devname> down" is done.
950 static int ax_close(struct net_device *dev)
955 * Hold the page lock during close
958 spin_lock_irqsave(&dev_lock(dev), flags);
959 AX88190_init(dev, 0);
960 spin_unlock_irqrestore(&dev_lock(dev), flags);
961 netif_stop_queue(dev);
966 * axnet_tx_timeout - handle transmit time out condition
967 * @dev: network device which has apparently fallen asleep
969 * Called by kernel when device never acknowledges a transmit has
970 * completed (or failed) - i.e. never posted a Tx related interrupt.
973 static void axnet_tx_timeout(struct net_device *dev)
975 long e8390_base = dev->base_addr;
976 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
977 int txsr, isr, tickssofar = jiffies - dev_trans_start(dev);
980 dev->stats.tx_errors++;
982 spin_lock_irqsave(&ei_local->page_lock, flags);
983 txsr = inb(e8390_base+EN0_TSR);
984 isr = inb(e8390_base+EN0_ISR);
985 spin_unlock_irqrestore(&ei_local->page_lock, flags);
987 netdev_printk(KERN_DEBUG, dev,
988 "Tx timed out, %s TSR=%#2x, ISR=%#2x, t=%d.\n",
989 (txsr & ENTSR_ABT) ? "excess collisions." :
990 (isr) ? "lost interrupt?" : "cable problem?",
991 txsr, isr, tickssofar);
993 if (!isr && !dev->stats.tx_packets)
995 /* The 8390 probably hasn't gotten on the cable yet. */
996 ei_local->interface_num ^= 1; /* Try a different xcvr. */
999 /* Ugly but a reset can be slow, yet must be protected */
1001 spin_lock_irqsave(&ei_local->page_lock, flags);
1003 /* Try to restart the card. Perhaps the user has fixed something. */
1005 AX88190_init(dev, 1);
1007 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1008 netif_wake_queue(dev);
1012 * axnet_start_xmit - begin packet transmission
1013 * @skb: packet to be sent
1014 * @dev: network device to which packet is sent
1016 * Sends a packet to an 8390 network device.
1019 static netdev_tx_t axnet_start_xmit(struct sk_buff *skb,
1020 struct net_device *dev)
1022 long e8390_base = dev->base_addr;
1023 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1024 int length, send_length, output_page;
1025 unsigned long flags;
1026 u8 packet[ETH_ZLEN];
1028 netif_stop_queue(dev);
1032 /* Mask interrupts from the ethercard.
1033 SMP: We have to grab the lock here otherwise the IRQ handler
1034 on another CPU can flip window and race the IRQ mask set. We end
1035 up trashing the mcast filter not disabling irqs if we don't lock */
1037 spin_lock_irqsave(&ei_local->page_lock, flags);
1038 outb_p(0x00, e8390_base + EN0_IMR);
1041 * Slow phase with lock held.
1044 ei_local->irqlock = 1;
1046 send_length = max(length, ETH_ZLEN);
1049 * We have two Tx slots available for use. Find the first free
1050 * slot, and then perform some sanity checks. With two Tx bufs,
1051 * you get very close to transmitting back-to-back packets. With
1052 * only one Tx buf, the transmitter sits idle while you reload the
1053 * card, leaving a substantial gap between each transmitted packet.
1056 if (ei_local->tx1 == 0)
1058 output_page = ei_local->tx_start_page;
1059 ei_local->tx1 = send_length;
1060 if (ei_debug && ei_local->tx2 > 0)
1061 netdev_printk(KERN_DEBUG, dev,
1062 "idle transmitter tx2=%d, lasttx=%d, txing=%d\n",
1063 ei_local->tx2, ei_local->lasttx,
1066 else if (ei_local->tx2 == 0)
1068 output_page = ei_local->tx_start_page + TX_PAGES/2;
1069 ei_local->tx2 = send_length;
1070 if (ei_debug && ei_local->tx1 > 0)
1071 netdev_printk(KERN_DEBUG, dev,
1072 "idle transmitter, tx1=%d, lasttx=%d, txing=%d\n",
1073 ei_local->tx1, ei_local->lasttx,
1077 { /* We should never get here. */
1079 netdev_printk(KERN_DEBUG, dev,
1080 "No Tx buffers free! tx1=%d tx2=%d last=%d\n",
1081 ei_local->tx1, ei_local->tx2,
1083 ei_local->irqlock = 0;
1084 netif_stop_queue(dev);
1085 outb_p(ENISR_ALL, e8390_base + EN0_IMR);
1086 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1087 dev->stats.tx_errors++;
1088 return NETDEV_TX_BUSY;
1092 * Okay, now upload the packet and trigger a send if the transmitter
1093 * isn't already sending. If it is busy, the interrupt handler will
1094 * trigger the send later, upon receiving a Tx done interrupt.
1097 if (length == skb->len)
1098 ei_block_output(dev, length, skb->data, output_page);
1100 memset(packet, 0, ETH_ZLEN);
1101 skb_copy_from_linear_data(skb, packet, skb->len);
1102 ei_block_output(dev, length, packet, output_page);
1105 if (! ei_local->txing)
1107 ei_local->txing = 1;
1108 NS8390_trigger_send(dev, send_length, output_page);
1109 dev->trans_start = jiffies;
1110 if (output_page == ei_local->tx_start_page)
1113 ei_local->lasttx = -1;
1118 ei_local->lasttx = -2;
1121 else ei_local->txqueue++;
1123 if (ei_local->tx1 && ei_local->tx2)
1124 netif_stop_queue(dev);
1126 netif_start_queue(dev);
1128 /* Turn 8390 interrupts back on. */
1129 ei_local->irqlock = 0;
1130 outb_p(ENISR_ALL, e8390_base + EN0_IMR);
1132 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1134 dev_kfree_skb (skb);
1135 dev->stats.tx_bytes += send_length;
1137 return NETDEV_TX_OK;
1141 * ax_interrupt - handle the interrupts from an 8390
1142 * @irq: interrupt number
1143 * @dev_id: a pointer to the net_device
1145 * Handle the ether interface interrupts. We pull packets from
1146 * the 8390 via the card specific functions and fire them at the networking
1147 * stack. We also handle transmit completions and wake the transmit path if
1148 * necessary. We also update the counters and do other housekeeping as
1152 static irqreturn_t ax_interrupt(int irq, void *dev_id)
1154 struct net_device *dev = dev_id;
1156 int interrupts, nr_serviced = 0, i;
1157 struct ei_device *ei_local;
1159 unsigned long flags;
1161 e8390_base = dev->base_addr;
1162 ei_local = netdev_priv(dev);
1165 * Protect the irq test too.
1168 spin_lock_irqsave(&ei_local->page_lock, flags);
1170 if (ei_local->irqlock) {
1171 #if 1 /* This might just be an interrupt for a PCI device sharing this line */
1173 /* The "irqlock" check is only for testing. */
1174 if (ei_local->irqlock)
1175 msg = "Interrupted while interrupts are masked!";
1177 msg = "Reentering the interrupt handler!";
1178 netdev_info(dev, "%s, isr=%#2x imr=%#2x\n",
1180 inb_p(e8390_base + EN0_ISR),
1181 inb_p(e8390_base + EN0_IMR));
1183 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1188 netdev_printk(KERN_DEBUG, dev, "interrupt(isr=%#2.2x)\n",
1189 inb_p(e8390_base + EN0_ISR));
1191 outb_p(0x00, e8390_base + EN0_ISR);
1192 ei_local->irqlock = 1;
1194 /* !!Assumption!! -- we stay in page 0. Don't break this. */
1195 while ((interrupts = inb_p(e8390_base + EN0_ISR)) != 0 &&
1196 ++nr_serviced < MAX_SERVICE)
1198 if (!netif_running(dev) || (interrupts == 0xff)) {
1201 "interrupt from stopped card\n");
1202 outb_p(interrupts, e8390_base + EN0_ISR);
1208 /* AX88190 bug fix. */
1209 outb_p(interrupts, e8390_base + EN0_ISR);
1210 for (i = 0; i < 10; i++) {
1211 if (!(inb(e8390_base + EN0_ISR) & interrupts))
1213 outb_p(0, e8390_base + EN0_ISR);
1214 outb_p(interrupts, e8390_base + EN0_ISR);
1216 if (interrupts & ENISR_OVER)
1218 else if (interrupts & (ENISR_RX+ENISR_RX_ERR))
1220 /* Got a good (?) packet. */
1223 /* Push the next to-transmit packet through. */
1224 if (interrupts & ENISR_TX)
1226 else if (interrupts & ENISR_TX_ERR)
1229 if (interrupts & ENISR_COUNTERS)
1231 dev->stats.rx_frame_errors += inb_p(e8390_base + EN0_COUNTER0);
1232 dev->stats.rx_crc_errors += inb_p(e8390_base + EN0_COUNTER1);
1233 dev->stats.rx_missed_errors+= inb_p(e8390_base + EN0_COUNTER2);
1237 if (interrupts && ei_debug > 3)
1240 if (nr_serviced >= MAX_SERVICE)
1242 /* 0xFF is valid for a card removal */
1243 if(interrupts!=0xFF)
1244 netdev_warn(dev, "Too much work at interrupt, status %#2.2x\n",
1246 outb_p(ENISR_ALL, e8390_base + EN0_ISR); /* Ack. most intrs. */
1248 netdev_warn(dev, "unknown interrupt %#2x\n",
1250 outb_p(0xff, e8390_base + EN0_ISR); /* Ack. all intrs. */
1254 /* Turn 8390 interrupts back on. */
1255 ei_local->irqlock = 0;
1256 outb_p(ENISR_ALL, e8390_base + EN0_IMR);
1258 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1259 return IRQ_RETVAL(handled);
1263 * ei_tx_err - handle transmitter error
1264 * @dev: network device which threw the exception
1266 * A transmitter error has happened. Most likely excess collisions (which
1267 * is a fairly normal condition). If the error is one where the Tx will
1268 * have been aborted, we try and send another one right away, instead of
1269 * letting the failed packet sit and collect dust in the Tx buffer. This
1270 * is a much better solution as it avoids kernel based Tx timeouts, and
1271 * an unnecessary card reset.
1273 * Called with lock held.
1276 static void ei_tx_err(struct net_device *dev)
1278 long e8390_base = dev->base_addr;
1279 unsigned char txsr = inb_p(e8390_base+EN0_TSR);
1280 unsigned char tx_was_aborted = txsr & (ENTSR_ABT+ENTSR_FU);
1282 #ifdef VERBOSE_ERROR_DUMP
1283 netdev_printk(KERN_DEBUG, dev,
1284 "transmitter error (%#2x):", txsr);
1285 if (txsr & ENTSR_ABT)
1286 pr_cont(" excess-collisions");
1287 if (txsr & ENTSR_ND)
1288 pr_cont(" non-deferral");
1289 if (txsr & ENTSR_CRS)
1290 pr_cont(" lost-carrier");
1291 if (txsr & ENTSR_FU)
1292 pr_cont(" FIFO-underrun");
1293 if (txsr & ENTSR_CDH)
1294 pr_cont(" lost-heartbeat");
1302 dev->stats.tx_errors++;
1303 if (txsr & ENTSR_CRS) dev->stats.tx_carrier_errors++;
1304 if (txsr & ENTSR_CDH) dev->stats.tx_heartbeat_errors++;
1305 if (txsr & ENTSR_OWC) dev->stats.tx_window_errors++;
1310 * ei_tx_intr - transmit interrupt handler
1311 * @dev: network device for which tx intr is handled
1313 * We have finished a transmit: check for errors and then trigger the next
1314 * packet to be sent. Called with lock held.
1317 static void ei_tx_intr(struct net_device *dev)
1319 long e8390_base = dev->base_addr;
1320 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1321 int status = inb(e8390_base + EN0_TSR);
1324 * There are two Tx buffers, see which one finished, and trigger
1325 * the send of another one if it exists.
1327 ei_local->txqueue--;
1329 if (ei_local->tx1 < 0)
1331 if (ei_local->lasttx != 1 && ei_local->lasttx != -1)
1332 netdev_err(dev, "%s: bogus last_tx_buffer %d, tx1=%d\n",
1333 ei_local->name, ei_local->lasttx,
1336 if (ei_local->tx2 > 0)
1338 ei_local->txing = 1;
1339 NS8390_trigger_send(dev, ei_local->tx2, ei_local->tx_start_page + 6);
1340 dev->trans_start = jiffies;
1342 ei_local->lasttx = 2;
1344 else ei_local->lasttx = 20, ei_local->txing = 0;
1346 else if (ei_local->tx2 < 0)
1348 if (ei_local->lasttx != 2 && ei_local->lasttx != -2)
1349 netdev_info(dev, "%s: bogus last_tx_buffer %d, tx2=%d\n",
1350 ei_local->name, ei_local->lasttx,
1353 if (ei_local->tx1 > 0)
1355 ei_local->txing = 1;
1356 NS8390_trigger_send(dev, ei_local->tx1, ei_local->tx_start_page);
1357 dev->trans_start = jiffies;
1359 ei_local->lasttx = 1;
1362 ei_local->lasttx = 10, ei_local->txing = 0;
1365 // netdev_warn(dev, "unexpected TX-done interrupt, lasttx=%d\n",
1366 // ei_local->lasttx);
1368 /* Minimize Tx latency: update the statistics after we restart TXing. */
1369 if (status & ENTSR_COL)
1370 dev->stats.collisions++;
1371 if (status & ENTSR_PTX)
1372 dev->stats.tx_packets++;
1375 dev->stats.tx_errors++;
1376 if (status & ENTSR_ABT)
1378 dev->stats.tx_aborted_errors++;
1379 dev->stats.collisions += 16;
1381 if (status & ENTSR_CRS)
1382 dev->stats.tx_carrier_errors++;
1383 if (status & ENTSR_FU)
1384 dev->stats.tx_fifo_errors++;
1385 if (status & ENTSR_CDH)
1386 dev->stats.tx_heartbeat_errors++;
1387 if (status & ENTSR_OWC)
1388 dev->stats.tx_window_errors++;
1390 netif_wake_queue(dev);
1394 * ei_receive - receive some packets
1395 * @dev: network device with which receive will be run
1397 * We have a good packet(s), get it/them out of the buffers.
1398 * Called with lock held.
1401 static void ei_receive(struct net_device *dev)
1403 long e8390_base = dev->base_addr;
1404 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1405 unsigned char rxing_page, this_frame, next_frame;
1406 unsigned short current_offset;
1407 int rx_pkt_count = 0;
1408 struct e8390_pkt_hdr rx_frame;
1410 while (++rx_pkt_count < 10)
1412 int pkt_len, pkt_stat;
1414 /* Get the rx page (incoming packet pointer). */
1415 rxing_page = inb_p(e8390_base + EN1_CURPAG -1);
1417 /* Remove one frame from the ring. Boundary is always a page behind. */
1418 this_frame = inb_p(e8390_base + EN0_BOUNDARY) + 1;
1419 if (this_frame >= ei_local->stop_page)
1420 this_frame = ei_local->rx_start_page;
1422 /* Someday we'll omit the previous, iff we never get this message.
1423 (There is at least one clone claimed to have a problem.)
1425 Keep quiet if it looks like a card removal. One problem here
1426 is that some clones crash in roughly the same way.
1428 if (ei_debug > 0 && this_frame != ei_local->current_page && (this_frame!=0x0 || rxing_page!=0xFF))
1429 netdev_err(dev, "mismatched read page pointers %2x vs %2x\n",
1430 this_frame, ei_local->current_page);
1432 if (this_frame == rxing_page) /* Read all the frames? */
1433 break; /* Done for now */
1435 current_offset = this_frame << 8;
1436 ei_get_8390_hdr(dev, &rx_frame, this_frame);
1438 pkt_len = rx_frame.count - sizeof(struct e8390_pkt_hdr);
1439 pkt_stat = rx_frame.status;
1441 next_frame = this_frame + 1 + ((pkt_len+4)>>8);
1443 if (pkt_len < 60 || pkt_len > 1518)
1446 netdev_printk(KERN_DEBUG, dev,
1447 "bogus packet size: %d, status=%#2x nxpg=%#2x\n",
1448 rx_frame.count, rx_frame.status,
1450 dev->stats.rx_errors++;
1451 dev->stats.rx_length_errors++;
1453 else if ((pkt_stat & 0x0F) == ENRSR_RXOK)
1455 struct sk_buff *skb;
1457 skb = dev_alloc_skb(pkt_len+2);
1461 netdev_printk(KERN_DEBUG, dev,
1462 "Couldn't allocate a sk_buff of size %d\n",
1464 dev->stats.rx_dropped++;
1469 skb_reserve(skb,2); /* IP headers on 16 byte boundaries */
1470 skb_put(skb, pkt_len); /* Make room */
1471 ei_block_input(dev, pkt_len, skb, current_offset + sizeof(rx_frame));
1472 skb->protocol=eth_type_trans(skb,dev);
1474 dev->stats.rx_packets++;
1475 dev->stats.rx_bytes += pkt_len;
1476 if (pkt_stat & ENRSR_PHY)
1477 dev->stats.multicast++;
1483 netdev_printk(KERN_DEBUG, dev,
1484 "bogus packet: status=%#2x nxpg=%#2x size=%d\n",
1485 rx_frame.status, rx_frame.next,
1487 dev->stats.rx_errors++;
1488 /* NB: The NIC counts CRC, frame and missed errors. */
1489 if (pkt_stat & ENRSR_FO)
1490 dev->stats.rx_fifo_errors++;
1492 next_frame = rx_frame.next;
1494 /* This _should_ never happen: it's here for avoiding bad clones. */
1495 if (next_frame >= ei_local->stop_page) {
1496 netdev_info(dev, "next frame inconsistency, %#2x\n",
1498 next_frame = ei_local->rx_start_page;
1500 ei_local->current_page = next_frame;
1501 outb_p(next_frame-1, e8390_base+EN0_BOUNDARY);
1506 * ei_rx_overrun - handle receiver overrun
1507 * @dev: network device which threw exception
1509 * We have a receiver overrun: we have to kick the 8390 to get it started
1510 * again. Problem is that you have to kick it exactly as NS prescribes in
1511 * the updated datasheets, or "the NIC may act in an unpredictable manner."
1512 * This includes causing "the NIC to defer indefinitely when it is stopped
1513 * on a busy network." Ugh.
1514 * Called with lock held. Don't call this with the interrupts off or your
1515 * computer will hate you - it takes 10ms or so.
1518 static void ei_rx_overrun(struct net_device *dev)
1520 axnet_dev_t *info = PRIV(dev);
1521 long e8390_base = dev->base_addr;
1522 unsigned char was_txing, must_resend = 0;
1525 * Record whether a Tx was in progress and then issue the
1528 was_txing = inb_p(e8390_base+E8390_CMD) & E8390_TRANS;
1529 outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD);
1532 netdev_printk(KERN_DEBUG, dev, "Receiver overrun\n");
1533 dev->stats.rx_over_errors++;
1536 * Wait a full Tx time (1.2ms) + some guard time, NS says 1.6ms total.
1537 * Early datasheets said to poll the reset bit, but now they say that
1538 * it "is not a reliable indicator and subsequently should be ignored."
1539 * We wait at least 10ms.
1545 * Reset RBCR[01] back to zero as per magic incantation.
1547 outb_p(0x00, e8390_base+EN0_RCNTLO);
1548 outb_p(0x00, e8390_base+EN0_RCNTHI);
1551 * See if any Tx was interrupted or not. According to NS, this
1552 * step is vital, and skipping it will cause no end of havoc.
1557 unsigned char tx_completed = inb_p(e8390_base+EN0_ISR) & (ENISR_TX+ENISR_TX_ERR);
1563 * Have to enter loopback mode and then restart the NIC before
1564 * you are allowed to slurp packets up off the ring.
1566 outb_p(E8390_TXOFF, e8390_base + EN0_TXCR);
1567 outb_p(E8390_NODMA + E8390_PAGE0 + E8390_START, e8390_base + E8390_CMD);
1570 * Clear the Rx ring of all the debris, and ack the interrupt.
1575 * Leave loopback mode, and resend any packet that got stopped.
1577 outb_p(E8390_TXCONFIG | info->duplex_flag, e8390_base + EN0_TXCR);
1579 outb_p(E8390_NODMA + E8390_PAGE0 + E8390_START + E8390_TRANS, e8390_base + E8390_CMD);
1583 * Collect the stats. This is called unlocked and from several contexts.
1586 static struct net_device_stats *get_stats(struct net_device *dev)
1588 long ioaddr = dev->base_addr;
1589 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1590 unsigned long flags;
1592 /* If the card is stopped, just return the present stats. */
1593 if (!netif_running(dev))
1596 spin_lock_irqsave(&ei_local->page_lock,flags);
1597 /* Read the counter registers, assuming we are in page 0. */
1598 dev->stats.rx_frame_errors += inb_p(ioaddr + EN0_COUNTER0);
1599 dev->stats.rx_crc_errors += inb_p(ioaddr + EN0_COUNTER1);
1600 dev->stats.rx_missed_errors+= inb_p(ioaddr + EN0_COUNTER2);
1601 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1607 * Form the 64 bit 8390 multicast table from the linked list of addresses
1608 * associated with this dev structure.
1611 static inline void make_mc_bits(u8 *bits, struct net_device *dev)
1613 struct netdev_hw_addr *ha;
1616 netdev_for_each_mc_addr(ha, dev) {
1617 crc = ether_crc(ETH_ALEN, ha->addr);
1619 * The 8390 uses the 6 most significant bits of the
1620 * CRC to index the multicast table.
1622 bits[crc>>29] |= (1<<((crc>>26)&7));
1627 * do_set_multicast_list - set/clear multicast filter
1628 * @dev: net device for which multicast filter is adjusted
1630 * Set or clear the multicast filter for this adaptor.
1631 * Must be called with lock held.
1634 static void do_set_multicast_list(struct net_device *dev)
1636 long e8390_base = dev->base_addr;
1638 struct ei_device *ei_local = (struct ei_device*)netdev_priv(dev);
1640 if (!(dev->flags&(IFF_PROMISC|IFF_ALLMULTI))) {
1641 memset(ei_local->mcfilter, 0, 8);
1642 if (!netdev_mc_empty(dev))
1643 make_mc_bits(ei_local->mcfilter, dev);
1645 /* set to accept-all */
1646 memset(ei_local->mcfilter, 0xFF, 8);
1649 outb_p(E8390_NODMA + E8390_PAGE1, e8390_base + E8390_CMD);
1650 for(i = 0; i < 8; i++)
1652 outb_p(ei_local->mcfilter[i], e8390_base + EN1_MULT_SHIFT(i));
1654 outb_p(E8390_NODMA + E8390_PAGE0, e8390_base + E8390_CMD);
1656 if(dev->flags&IFF_PROMISC)
1657 outb_p(E8390_RXCONFIG | 0x58, e8390_base + EN0_RXCR);
1658 else if (dev->flags & IFF_ALLMULTI || !netdev_mc_empty(dev))
1659 outb_p(E8390_RXCONFIG | 0x48, e8390_base + EN0_RXCR);
1661 outb_p(E8390_RXCONFIG | 0x40, e8390_base + EN0_RXCR);
1663 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, e8390_base+E8390_CMD);
1667 * Called without lock held. This is invoked from user context and may
1668 * be parallel to just about everything else. Its also fairly quick and
1669 * not called too often. Must protect against both bh and irq users
1672 static void set_multicast_list(struct net_device *dev)
1674 unsigned long flags;
1676 spin_lock_irqsave(&dev_lock(dev), flags);
1677 do_set_multicast_list(dev);
1678 spin_unlock_irqrestore(&dev_lock(dev), flags);
1681 /* This page of functions should be 8390 generic */
1682 /* Follow National Semi's recommendations for initializing the "NIC". */
1685 * AX88190_init - initialize 8390 hardware
1686 * @dev: network device to initialize
1687 * @startp: boolean. non-zero value to initiate chip processing
1689 * Must be called with lock held.
1692 static void AX88190_init(struct net_device *dev, int startp)
1694 axnet_dev_t *info = PRIV(dev);
1695 long e8390_base = dev->base_addr;
1696 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1698 int endcfg = ei_local->word16 ? (0x48 | ENDCFG_WTS) : 0x48;
1700 if(sizeof(struct e8390_pkt_hdr)!=4)
1701 panic("8390.c: header struct mispacked\n");
1702 /* Follow National Semi's recommendations for initing the DP83902. */
1703 outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD); /* 0x21 */
1704 outb_p(endcfg, e8390_base + EN0_DCFG); /* 0x48 or 0x49 */
1705 /* Clear the remote byte count registers. */
1706 outb_p(0x00, e8390_base + EN0_RCNTLO);
1707 outb_p(0x00, e8390_base + EN0_RCNTHI);
1708 /* Set to monitor and loopback mode -- this is vital!. */
1709 outb_p(E8390_RXOFF|0x40, e8390_base + EN0_RXCR); /* 0x60 */
1710 outb_p(E8390_TXOFF, e8390_base + EN0_TXCR); /* 0x02 */
1711 /* Set the transmit page and receive ring. */
1712 outb_p(ei_local->tx_start_page, e8390_base + EN0_TPSR);
1713 ei_local->tx1 = ei_local->tx2 = 0;
1714 outb_p(ei_local->rx_start_page, e8390_base + EN0_STARTPG);
1715 outb_p(ei_local->stop_page-1, e8390_base + EN0_BOUNDARY); /* 3c503 says 0x3f,NS0x26*/
1716 ei_local->current_page = ei_local->rx_start_page; /* assert boundary+1 */
1717 outb_p(ei_local->stop_page, e8390_base + EN0_STOPPG);
1718 /* Clear the pending interrupts and mask. */
1719 outb_p(0xFF, e8390_base + EN0_ISR);
1720 outb_p(0x00, e8390_base + EN0_IMR);
1722 /* Copy the station address into the DS8390 registers. */
1724 outb_p(E8390_NODMA + E8390_PAGE1 + E8390_STOP, e8390_base+E8390_CMD); /* 0x61 */
1725 for(i = 0; i < 6; i++)
1727 outb_p(dev->dev_addr[i], e8390_base + EN1_PHYS_SHIFT(i));
1728 if(inb_p(e8390_base + EN1_PHYS_SHIFT(i))!=dev->dev_addr[i])
1729 netdev_err(dev, "Hw. address read/write mismap %d\n", i);
1732 outb_p(ei_local->rx_start_page, e8390_base + EN1_CURPAG);
1733 outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD);
1735 netif_start_queue(dev);
1736 ei_local->tx1 = ei_local->tx2 = 0;
1737 ei_local->txing = 0;
1739 if (info->flags & IS_AX88790) /* select Internal PHY */
1740 outb(0x10, e8390_base + AXNET_GPIO);
1744 outb_p(0xff, e8390_base + EN0_ISR);
1745 outb_p(ENISR_ALL, e8390_base + EN0_IMR);
1746 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, e8390_base+E8390_CMD);
1747 outb_p(E8390_TXCONFIG | info->duplex_flag,
1748 e8390_base + EN0_TXCR); /* xmit on. */
1749 /* 3c503 TechMan says rxconfig only after the NIC is started. */
1750 outb_p(E8390_RXCONFIG | 0x40, e8390_base + EN0_RXCR); /* rx on, */
1751 do_set_multicast_list(dev); /* (re)load the mcast table */
1755 /* Trigger a transmit start, assuming the length is valid.
1756 Always called with the page lock held */
1758 static void NS8390_trigger_send(struct net_device *dev, unsigned int length,
1761 long e8390_base = dev->base_addr;
1762 struct ei_device *ei_local __attribute((unused)) = (struct ei_device *) netdev_priv(dev);
1764 if (inb_p(e8390_base) & E8390_TRANS)
1766 netdev_warn(dev, "trigger_send() called with the transmitter busy\n");
1769 outb_p(length & 0xff, e8390_base + EN0_TCNTLO);
1770 outb_p(length >> 8, e8390_base + EN0_TCNTHI);
1771 outb_p(start_page, e8390_base + EN0_TPSR);
1772 outb_p(E8390_NODMA+E8390_TRANS+E8390_START, e8390_base+E8390_CMD);