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/etherdevice.h>
39 #include <linux/crc32.h>
40 #include <linux/mii.h>
43 #include <pcmcia/cs_types.h>
44 #include <pcmcia/cs.h>
45 #include <pcmcia/cistpl.h>
46 #include <pcmcia/ciscode.h>
47 #include <pcmcia/ds.h>
48 #include <pcmcia/cisreg.h>
51 #include <asm/system.h>
52 #include <asm/byteorder.h>
53 #include <asm/uaccess.h>
55 #define AXNET_CMD 0x00
56 #define AXNET_DATAPORT 0x10 /* NatSemi-defined port window offset. */
57 #define AXNET_RESET 0x1f /* Issue a read to reset, a write to clear. */
58 #define AXNET_MII_EEP 0x14 /* Offset of MII access port */
59 #define AXNET_TEST 0x15 /* Offset of TEST Register port */
60 #define AXNET_GPIO 0x17 /* Offset of General Purpose Register Port */
62 #define AXNET_START_PG 0x40 /* First page of TX buffer */
63 #define AXNET_STOP_PG 0x80 /* Last page +1 of RX ring */
65 #define AXNET_RDC_TIMEOUT 0x02 /* Max wait in jiffies for Tx RDC */
67 #define IS_AX88190 0x0001
68 #define IS_AX88790 0x0002
70 /*====================================================================*/
72 /* Module parameters */
74 MODULE_AUTHOR("David Hinds <dahinds@users.sourceforge.net>");
75 MODULE_DESCRIPTION("Asix AX88190 PCMCIA ethernet driver");
76 MODULE_LICENSE("GPL");
79 /*====================================================================*/
81 static int axnet_config(struct pcmcia_device *link);
82 static void axnet_release(struct pcmcia_device *link);
83 static int axnet_open(struct net_device *dev);
84 static int axnet_close(struct net_device *dev);
85 static int axnet_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
86 static netdev_tx_t axnet_start_xmit(struct sk_buff *skb,
87 struct net_device *dev);
88 static struct net_device_stats *get_stats(struct net_device *dev);
89 static void set_multicast_list(struct net_device *dev);
90 static void axnet_tx_timeout(struct net_device *dev);
91 static const struct ethtool_ops netdev_ethtool_ops;
92 static irqreturn_t ei_irq_wrapper(int irq, void *dev_id);
93 static void ei_watchdog(u_long arg);
94 static void axnet_reset_8390(struct net_device *dev);
96 static int mdio_read(unsigned int addr, int phy_id, int loc);
97 static void mdio_write(unsigned int addr, int phy_id, int loc, int value);
99 static void get_8390_hdr(struct net_device *,
100 struct e8390_pkt_hdr *, int);
101 static void block_input(struct net_device *dev, int count,
102 struct sk_buff *skb, int ring_offset);
103 static void block_output(struct net_device *dev, int count,
104 const u_char *buf, const int start_page);
106 static void axnet_detach(struct pcmcia_device *p_dev);
108 static void AX88190_init(struct net_device *dev, int startp);
109 static int ax_open(struct net_device *dev);
110 static int ax_close(struct net_device *dev);
111 static irqreturn_t ax_interrupt(int irq, void *dev_id);
113 /*====================================================================*/
115 typedef struct axnet_dev_t {
116 struct pcmcia_device *p_dev;
119 struct timer_list watchdog;
120 int stale, fast_poll;
127 static inline axnet_dev_t *PRIV(struct net_device *dev)
129 void *p = (char *)netdev_priv(dev) + sizeof(struct ei_device);
133 static const struct net_device_ops axnet_netdev_ops = {
134 .ndo_open = axnet_open,
135 .ndo_stop = axnet_close,
136 .ndo_do_ioctl = axnet_ioctl,
137 .ndo_start_xmit = axnet_start_xmit,
138 .ndo_tx_timeout = axnet_tx_timeout,
139 .ndo_get_stats = get_stats,
140 .ndo_set_multicast_list = set_multicast_list,
141 .ndo_change_mtu = eth_change_mtu,
142 .ndo_set_mac_address = eth_mac_addr,
143 .ndo_validate_addr = eth_validate_addr,
146 /*======================================================================
148 axnet_attach() creates an "instance" of the driver, allocating
149 local data structures for one device. The device is registered
152 ======================================================================*/
154 static int axnet_probe(struct pcmcia_device *link)
157 struct net_device *dev;
158 struct ei_device *ei_local;
160 dev_dbg(&link->dev, "axnet_attach()\n");
162 dev = alloc_etherdev(sizeof(struct ei_device) + sizeof(axnet_dev_t));
166 ei_local = netdev_priv(dev);
167 spin_lock_init(&ei_local->page_lock);
172 link->irq.Attributes = IRQ_TYPE_DYNAMIC_SHARING;
173 link->conf.Attributes = CONF_ENABLE_IRQ;
174 link->conf.IntType = INT_MEMORY_AND_IO;
176 dev->netdev_ops = &axnet_netdev_ops;
178 SET_ETHTOOL_OPS(dev, &netdev_ethtool_ops);
179 dev->watchdog_timeo = TX_TIMEOUT;
181 return axnet_config(link);
184 /*======================================================================
186 This deletes a driver "instance". The device is de-registered
187 with Card Services. If it has been released, all local data
188 structures are freed. Otherwise, the structures will be freed
189 when the device is released.
191 ======================================================================*/
193 static void axnet_detach(struct pcmcia_device *link)
195 struct net_device *dev = link->priv;
197 dev_dbg(&link->dev, "axnet_detach(0x%p)\n", link);
200 unregister_netdev(dev);
207 /*======================================================================
209 This probes for a card's hardware address by reading the PROM.
211 ======================================================================*/
213 static int get_prom(struct pcmcia_device *link)
215 struct net_device *dev = link->priv;
216 unsigned int ioaddr = dev->base_addr;
219 /* This is based on drivers/net/ne.c */
221 u_char value, offset;
223 {E8390_NODMA+E8390_PAGE0+E8390_STOP, E8390_CMD}, /* Select page 0*/
224 {0x01, EN0_DCFG}, /* Set word-wide access. */
225 {0x00, EN0_RCNTLO}, /* Clear the count regs. */
227 {0x00, EN0_IMR}, /* Mask completion irq. */
229 {E8390_RXOFF|0x40, EN0_RXCR}, /* 0x60 Set to monitor */
230 {E8390_TXOFF, EN0_TXCR}, /* 0x02 and loopback mode. */
233 {0x00, EN0_RSARLO}, /* DMA starting at 0x0400. */
235 {E8390_RREAD+E8390_START, E8390_CMD},
238 /* Not much of a test, but the alternatives are messy */
239 if (link->conf.ConfigBase != 0x03c0)
242 axnet_reset_8390(dev);
245 for (i = 0; i < ARRAY_SIZE(program_seq); i++)
246 outb_p(program_seq[i].value, ioaddr + program_seq[i].offset);
248 for (i = 0; i < 6; i += 2) {
249 j = inw(ioaddr + AXNET_DATAPORT);
250 dev->dev_addr[i] = j & 0xff;
251 dev->dev_addr[i+1] = j >> 8;
256 /*======================================================================
258 axnet_config() is scheduled to run after a CARD_INSERTION event
259 is received, to configure the PCMCIA socket, and to make the
260 ethernet device available to the system.
262 ======================================================================*/
264 static int try_io_port(struct pcmcia_device *link)
267 if (link->io.NumPorts1 == 32) {
268 link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;
269 if (link->io.NumPorts2 > 0) {
270 /* for master/slave multifunction cards */
271 link->io.Attributes2 = IO_DATA_PATH_WIDTH_8;
272 link->irq.Attributes =
273 IRQ_TYPE_DYNAMIC_SHARING;
276 /* This should be two 16-port windows */
277 link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
278 link->io.Attributes2 = IO_DATA_PATH_WIDTH_16;
280 if (link->io.BasePort1 == 0) {
281 link->io.IOAddrLines = 16;
282 for (j = 0; j < 0x400; j += 0x20) {
283 link->io.BasePort1 = j ^ 0x300;
284 link->io.BasePort2 = (j ^ 0x300) + 0x10;
285 ret = pcmcia_request_io(link, &link->io);
291 return pcmcia_request_io(link, &link->io);
295 static int axnet_configcheck(struct pcmcia_device *p_dev,
296 cistpl_cftable_entry_t *cfg,
297 cistpl_cftable_entry_t *dflt,
302 cistpl_io_t *io = &cfg->io;
304 if (cfg->index == 0 || cfg->io.nwin == 0)
307 p_dev->conf.ConfigIndex = 0x05;
308 /* For multifunction cards, by convention, we configure the
309 network function with window 0, and serial with window 1 */
311 i = (io->win[1].len > io->win[0].len);
312 p_dev->io.BasePort2 = io->win[1-i].base;
313 p_dev->io.NumPorts2 = io->win[1-i].len;
315 i = p_dev->io.NumPorts2 = 0;
317 p_dev->io.BasePort1 = io->win[i].base;
318 p_dev->io.NumPorts1 = io->win[i].len;
319 p_dev->io.IOAddrLines = io->flags & CISTPL_IO_LINES_MASK;
320 if (p_dev->io.NumPorts1 + p_dev->io.NumPorts2 >= 32)
321 return try_io_port(p_dev);
326 static int axnet_config(struct pcmcia_device *link)
328 struct net_device *dev = link->priv;
329 axnet_dev_t *info = PRIV(dev);
332 dev_dbg(&link->dev, "axnet_config(0x%p)\n", link);
334 /* don't trust the CIS on this; Linksys got it wrong */
335 link->conf.Present = 0x63;
336 ret = pcmcia_loop_config(link, axnet_configcheck, NULL);
340 ret = pcmcia_request_irq(link, &link->irq);
344 if (link->io.NumPorts2 == 8) {
345 link->conf.Attributes |= CONF_ENABLE_SPKR;
346 link->conf.Status = CCSR_AUDIO_ENA;
349 ret = pcmcia_request_configuration(link, &link->conf);
353 dev->irq = link->irq.AssignedIRQ;
354 dev->base_addr = link->io.BasePort1;
356 if (!get_prom(link)) {
357 printk(KERN_NOTICE "axnet_cs: this is not an AX88190 card!\n");
358 printk(KERN_NOTICE "axnet_cs: use pcnet_cs instead.\n");
362 ei_status.name = "AX88190";
363 ei_status.word16 = 1;
364 ei_status.tx_start_page = AXNET_START_PG;
365 ei_status.rx_start_page = AXNET_START_PG + TX_PAGES;
366 ei_status.stop_page = AXNET_STOP_PG;
367 ei_status.reset_8390 = &axnet_reset_8390;
368 ei_status.get_8390_hdr = &get_8390_hdr;
369 ei_status.block_input = &block_input;
370 ei_status.block_output = &block_output;
372 if (inb(dev->base_addr + AXNET_TEST) != 0)
373 info->flags |= IS_AX88790;
375 info->flags |= IS_AX88190;
377 if (info->flags & IS_AX88790)
378 outb(0x10, dev->base_addr + AXNET_GPIO); /* select Internal PHY */
380 for (i = 0; i < 32; i++) {
381 j = mdio_read(dev->base_addr + AXNET_MII_EEP, i, 1);
382 j2 = mdio_read(dev->base_addr + AXNET_MII_EEP, i, 2);
383 if (j == j2) continue;
384 if ((j != 0) && (j != 0xffff)) break;
387 /* Maybe PHY is in power down mode. (PPD_SET = 1)
388 Bit 2 of CCSR is active low. */
390 conf_reg_t reg = { 0, CS_WRITE, CISREG_CCSR, 0x04 };
391 pcmcia_access_configuration_register(link, ®);
392 for (i = 0; i < 32; i++) {
393 j = mdio_read(dev->base_addr + AXNET_MII_EEP, i, 1);
394 j2 = mdio_read(dev->base_addr + AXNET_MII_EEP, i, 2);
395 if (j == j2) continue;
396 if ((j != 0) && (j != 0xffff)) break;
400 info->phy_id = (i < 32) ? i : -1;
401 link->dev_node = &info->node;
402 SET_NETDEV_DEV(dev, &link->dev);
404 if (register_netdev(dev) != 0) {
405 printk(KERN_NOTICE "axnet_cs: register_netdev() failed\n");
406 link->dev_node = NULL;
410 strcpy(info->node.dev_name, dev->name);
412 printk(KERN_INFO "%s: Asix AX88%d90: io %#3lx, irq %d, "
414 dev->name, ((info->flags & IS_AX88790) ? 7 : 1),
415 dev->base_addr, dev->irq,
417 if (info->phy_id != -1) {
418 dev_dbg(&link->dev, " MII transceiver at index %d, status %x.\n", info->phy_id, j);
420 printk(KERN_NOTICE " No MII transceivers found!\n");
429 /*======================================================================
431 After a card is removed, axnet_release() will unregister the net
432 device, and release the PCMCIA configuration. If the device is
433 still open, this will be postponed until it is closed.
435 ======================================================================*/
437 static void axnet_release(struct pcmcia_device *link)
439 pcmcia_disable_device(link);
442 static int axnet_suspend(struct pcmcia_device *link)
444 struct net_device *dev = link->priv;
447 netif_device_detach(dev);
452 static int axnet_resume(struct pcmcia_device *link)
454 struct net_device *dev = link->priv;
457 axnet_reset_8390(dev);
458 AX88190_init(dev, 1);
459 netif_device_attach(dev);
466 /*======================================================================
468 MII interface support
470 ======================================================================*/
472 #define MDIO_SHIFT_CLK 0x01
473 #define MDIO_DATA_WRITE0 0x00
474 #define MDIO_DATA_WRITE1 0x08
475 #define MDIO_DATA_READ 0x04
476 #define MDIO_MASK 0x0f
477 #define MDIO_ENB_IN 0x02
479 static void mdio_sync(unsigned int addr)
482 for (bits = 0; bits < 32; bits++) {
483 outb_p(MDIO_DATA_WRITE1, addr);
484 outb_p(MDIO_DATA_WRITE1 | MDIO_SHIFT_CLK, addr);
488 static int mdio_read(unsigned int addr, int phy_id, int loc)
490 u_int cmd = (0xf6<<10)|(phy_id<<5)|loc;
494 for (i = 14; i >= 0; i--) {
495 int dat = (cmd&(1<<i)) ? MDIO_DATA_WRITE1 : MDIO_DATA_WRITE0;
497 outb_p(dat | MDIO_SHIFT_CLK, addr);
499 for (i = 19; i > 0; i--) {
500 outb_p(MDIO_ENB_IN, addr);
501 retval = (retval << 1) | ((inb_p(addr) & MDIO_DATA_READ) != 0);
502 outb_p(MDIO_ENB_IN | MDIO_SHIFT_CLK, addr);
504 return (retval>>1) & 0xffff;
507 static void mdio_write(unsigned int addr, int phy_id, int loc, int value)
509 u_int cmd = (0x05<<28)|(phy_id<<23)|(loc<<18)|(1<<17)|value;
513 for (i = 31; i >= 0; i--) {
514 int dat = (cmd&(1<<i)) ? MDIO_DATA_WRITE1 : MDIO_DATA_WRITE0;
516 outb_p(dat | MDIO_SHIFT_CLK, addr);
518 for (i = 1; i >= 0; i--) {
519 outb_p(MDIO_ENB_IN, addr);
520 outb_p(MDIO_ENB_IN | MDIO_SHIFT_CLK, addr);
524 /*====================================================================*/
526 static int axnet_open(struct net_device *dev)
529 axnet_dev_t *info = PRIV(dev);
530 struct pcmcia_device *link = info->p_dev;
531 unsigned int nic_base = dev->base_addr;
533 dev_dbg(&link->dev, "axnet_open('%s')\n", dev->name);
535 if (!pcmcia_dev_present(link))
538 outb_p(0xFF, nic_base + EN0_ISR); /* Clear bogus intr. */
539 ret = request_irq(dev->irq, ei_irq_wrapper, IRQF_SHARED, "axnet_cs", dev);
545 info->link_status = 0x00;
546 init_timer(&info->watchdog);
547 info->watchdog.function = &ei_watchdog;
548 info->watchdog.data = (u_long)dev;
549 info->watchdog.expires = jiffies + HZ;
550 add_timer(&info->watchdog);
555 /*====================================================================*/
557 static int axnet_close(struct net_device *dev)
559 axnet_dev_t *info = PRIV(dev);
560 struct pcmcia_device *link = info->p_dev;
562 dev_dbg(&link->dev, "axnet_close('%s')\n", dev->name);
565 free_irq(dev->irq, dev);
568 netif_stop_queue(dev);
569 del_timer_sync(&info->watchdog);
574 /*======================================================================
576 Hard reset the card. This used to pause for the same period that
577 a 8390 reset command required, but that shouldn't be necessary.
579 ======================================================================*/
581 static void axnet_reset_8390(struct net_device *dev)
583 unsigned int nic_base = dev->base_addr;
586 ei_status.txing = ei_status.dmaing = 0;
588 outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, nic_base + E8390_CMD);
590 outb(inb(nic_base + AXNET_RESET), nic_base + AXNET_RESET);
592 for (i = 0; i < 100; i++) {
593 if ((inb_p(nic_base+EN0_ISR) & ENISR_RESET) != 0)
597 outb_p(ENISR_RESET, nic_base + EN0_ISR); /* Ack intr. */
600 printk(KERN_ERR "%s: axnet_reset_8390() did not complete.\n",
603 } /* axnet_reset_8390 */
605 /*====================================================================*/
607 static irqreturn_t ei_irq_wrapper(int irq, void *dev_id)
609 struct net_device *dev = dev_id;
610 PRIV(dev)->stale = 0;
611 return ax_interrupt(irq, dev_id);
614 static void ei_watchdog(u_long arg)
616 struct net_device *dev = (struct net_device *)(arg);
617 axnet_dev_t *info = PRIV(dev);
618 unsigned int nic_base = dev->base_addr;
619 unsigned int mii_addr = nic_base + AXNET_MII_EEP;
622 if (!netif_device_present(dev)) goto reschedule;
624 /* Check for pending interrupt with expired latency timer: with
625 this, we can limp along even if the interrupt is blocked */
626 if (info->stale++ && (inb_p(nic_base + EN0_ISR) & ENISR_ALL)) {
627 if (!info->fast_poll)
628 printk(KERN_INFO "%s: interrupt(s) dropped!\n", dev->name);
629 ei_irq_wrapper(dev->irq, dev);
630 info->fast_poll = HZ;
632 if (info->fast_poll) {
634 info->watchdog.expires = jiffies + 1;
635 add_timer(&info->watchdog);
639 if (info->phy_id < 0)
641 link = mdio_read(mii_addr, info->phy_id, 1);
642 if (!link || (link == 0xffff)) {
643 printk(KERN_INFO "%s: MII is missing!\n", dev->name);
649 if (link != info->link_status) {
650 u_short p = mdio_read(mii_addr, info->phy_id, 5);
651 printk(KERN_INFO "%s: %s link beat\n", dev->name,
652 (link) ? "found" : "lost");
654 info->duplex_flag = (p & 0x0140) ? 0x80 : 0x00;
656 printk(KERN_INFO "%s: autonegotiation complete: "
657 "%sbaseT-%cD selected\n", dev->name,
658 ((p & 0x0180) ? "100" : "10"),
659 ((p & 0x0140) ? 'F' : 'H'));
661 printk(KERN_INFO "%s: link partner did not autonegotiate\n",
663 AX88190_init(dev, 1);
665 info->link_status = link;
669 info->watchdog.expires = jiffies + HZ;
670 add_timer(&info->watchdog);
673 static void netdev_get_drvinfo(struct net_device *dev,
674 struct ethtool_drvinfo *info)
676 strcpy(info->driver, "axnet_cs");
679 static const struct ethtool_ops netdev_ethtool_ops = {
680 .get_drvinfo = netdev_get_drvinfo,
683 /*====================================================================*/
685 static int axnet_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
687 axnet_dev_t *info = PRIV(dev);
688 struct mii_ioctl_data *data = if_mii(rq);
689 unsigned int mii_addr = dev->base_addr + AXNET_MII_EEP;
692 data->phy_id = info->phy_id;
693 case SIOCGMIIREG: /* Read MII PHY register. */
694 data->val_out = mdio_read(mii_addr, data->phy_id, data->reg_num & 0x1f);
696 case SIOCSMIIREG: /* Write MII PHY register. */
697 mdio_write(mii_addr, data->phy_id, data->reg_num & 0x1f, data->val_in);
703 /*====================================================================*/
705 static void get_8390_hdr(struct net_device *dev,
706 struct e8390_pkt_hdr *hdr,
709 unsigned int nic_base = dev->base_addr;
711 outb_p(0, nic_base + EN0_RSARLO); /* On page boundary */
712 outb_p(ring_page, nic_base + EN0_RSARHI);
713 outb_p(E8390_RREAD+E8390_START, nic_base + AXNET_CMD);
715 insw(nic_base + AXNET_DATAPORT, hdr,
716 sizeof(struct e8390_pkt_hdr)>>1);
717 /* Fix for big endian systems */
718 hdr->count = le16_to_cpu(hdr->count);
722 /*====================================================================*/
724 static void block_input(struct net_device *dev, int count,
725 struct sk_buff *skb, int ring_offset)
727 unsigned int nic_base = dev->base_addr;
728 int xfer_count = count;
729 char *buf = skb->data;
731 if ((ei_debug > 4) && (count != 4))
732 pr_debug("%s: [bi=%d]\n", dev->name, count+4);
733 outb_p(ring_offset & 0xff, nic_base + EN0_RSARLO);
734 outb_p(ring_offset >> 8, nic_base + EN0_RSARHI);
735 outb_p(E8390_RREAD+E8390_START, nic_base + AXNET_CMD);
737 insw(nic_base + AXNET_DATAPORT,buf,count>>1);
739 buf[count-1] = inb(nic_base + AXNET_DATAPORT), xfer_count++;
743 /*====================================================================*/
745 static void block_output(struct net_device *dev, int count,
746 const u_char *buf, const int start_page)
748 unsigned int nic_base = dev->base_addr;
750 pr_debug("%s: [bo=%d]\n", dev->name, count);
752 /* Round the count up for word writes. Do we need to do this?
753 What effect will an odd byte count have on the 8390?
754 I should check someday. */
758 outb_p(0x00, nic_base + EN0_RSARLO);
759 outb_p(start_page, nic_base + EN0_RSARHI);
760 outb_p(E8390_RWRITE+E8390_START, nic_base + AXNET_CMD);
761 outsw(nic_base + AXNET_DATAPORT, buf, count>>1);
764 static struct pcmcia_device_id axnet_ids[] = {
765 PCMCIA_PFC_DEVICE_MANF_CARD(0, 0x016c, 0x0081),
766 PCMCIA_DEVICE_MANF_CARD(0x018a, 0x0301),
767 PCMCIA_DEVICE_MANF_CARD(0x026f, 0x0301),
768 PCMCIA_DEVICE_MANF_CARD(0x026f, 0x0303),
769 PCMCIA_DEVICE_MANF_CARD(0x026f, 0x0309),
770 PCMCIA_DEVICE_MANF_CARD(0x0274, 0x1106),
771 PCMCIA_DEVICE_MANF_CARD(0x8a01, 0xc1ab),
772 PCMCIA_DEVICE_MANF_CARD(0x021b, 0x0202),
773 PCMCIA_DEVICE_MANF_CARD(0xffff, 0x1090),
774 PCMCIA_DEVICE_PROD_ID12("AmbiCom,Inc.", "Fast Ethernet PC Card(AMB8110)", 0x49b020a7, 0x119cc9fc),
775 PCMCIA_DEVICE_PROD_ID124("Fast Ethernet", "16-bit PC Card", "AX88190", 0xb4be14e3, 0x9a12eb6a, 0xab9be5ef),
776 PCMCIA_DEVICE_PROD_ID12("ASIX", "AX88190", 0x0959823b, 0xab9be5ef),
777 PCMCIA_DEVICE_PROD_ID12("Billionton", "LNA-100B", 0x552ab682, 0xbc3b87e1),
778 PCMCIA_DEVICE_PROD_ID12("CHEETAH ETHERCARD", "EN2228", 0x00fa7bc8, 0x00e990cc),
779 PCMCIA_DEVICE_PROD_ID12("CNet", "CNF301", 0xbc477dde, 0x78c5f40b),
780 PCMCIA_DEVICE_PROD_ID12("corega K.K.", "corega FEther PCC-TXD", 0x5261440f, 0x436768c5),
781 PCMCIA_DEVICE_PROD_ID12("corega K.K.", "corega FEtherII PCC-TXD", 0x5261440f, 0x730df72e),
782 PCMCIA_DEVICE_PROD_ID12("corega K.K.", "corega FEther PCC-TXM", 0x5261440f, 0x3abbd061),
783 PCMCIA_DEVICE_PROD_ID12("Dynalink", "L100C16", 0x55632fd5, 0x66bc2a90),
784 PCMCIA_DEVICE_PROD_ID12("IO DATA", "ETXPCM", 0x547e66dc, 0x233adac2),
785 PCMCIA_DEVICE_PROD_ID12("Linksys", "EtherFast 10/100 PC Card (PCMPC100 V3)", 0x0733cc81, 0x232019a8),
786 PCMCIA_DEVICE_PROD_ID12("MELCO", "LPC3-TX", 0x481e0094, 0xf91af609),
787 PCMCIA_DEVICE_PROD_ID12("NETGEAR", "FA411", 0x9aa79dc3, 0x40fad875),
788 PCMCIA_DEVICE_PROD_ID12("PCMCIA", "100BASE", 0x281f1c5d, 0x7c2add04),
789 PCMCIA_DEVICE_PROD_ID12("PCMCIA", "FastEtherCard", 0x281f1c5d, 0x7ef26116),
790 PCMCIA_DEVICE_PROD_ID12("PCMCIA", "FEP501", 0x281f1c5d, 0x2e272058),
791 PCMCIA_DEVICE_PROD_ID14("Network Everywhere", "AX88190", 0x820a67b6, 0xab9be5ef),
794 MODULE_DEVICE_TABLE(pcmcia, axnet_ids);
796 static struct pcmcia_driver axnet_cs_driver = {
797 .owner = THIS_MODULE,
801 .probe = axnet_probe,
802 .remove = axnet_detach,
803 .id_table = axnet_ids,
804 .suspend = axnet_suspend,
805 .resume = axnet_resume,
808 static int __init init_axnet_cs(void)
810 return pcmcia_register_driver(&axnet_cs_driver);
813 static void __exit exit_axnet_cs(void)
815 pcmcia_unregister_driver(&axnet_cs_driver);
818 module_init(init_axnet_cs);
819 module_exit(exit_axnet_cs);
821 /*====================================================================*/
823 /* 8390.c: A general NS8390 ethernet driver core for linux. */
825 Written 1992-94 by Donald Becker.
827 Copyright 1993 United States Government as represented by the
828 Director, National Security Agency.
830 This software may be used and distributed according to the terms
831 of the GNU General Public License, incorporated herein by reference.
833 The author may be reached as becker@scyld.com, or C/O
834 Scyld Computing Corporation
835 410 Severn Ave., Suite 210
838 This is the chip-specific code for many 8390-based ethernet adaptors.
839 This is not a complete driver, it must be combined with board-specific
840 code such as ne.c, wd.c, 3c503.c, etc.
842 Seeing how at least eight drivers use this code, (not counting the
843 PCMCIA ones either) it is easy to break some card by what seems like
844 a simple innocent change. Please contact me or Donald if you think
845 you have found something that needs changing. -- PG
849 Paul Gortmaker : remove set_bit lock, other cleanups.
850 Paul Gortmaker : add ei_get_8390_hdr() so we can pass skb's to
851 ei_block_input() for eth_io_copy_and_sum().
852 Paul Gortmaker : exchange static int ei_pingpong for a #define,
853 also add better Tx error handling.
854 Paul Gortmaker : rewrite Rx overrun handling as per NS specs.
855 Alexey Kuznetsov : use the 8390's six bit hash multicast filter.
856 Paul Gortmaker : tweak ANK's above multicast changes a bit.
857 Paul Gortmaker : update packet statistics for v2.1.x
858 Alan Cox : support arbitary stupid port mappings on the
859 68K Macintosh. Support >16bit I/O spaces
860 Paul Gortmaker : add kmod support for auto-loading of the 8390
861 module by all drivers that require it.
862 Alan Cox : Spinlocking work, added 'BUG_83C690'
863 Paul Gortmaker : Separate out Tx timeout code from Tx path.
866 The National Semiconductor LAN Databook, and the 3Com 3c503 databook.
870 static const char version_8390[] = KERN_INFO \
871 "8390.c:v1.10cvs 9/23/94 Donald Becker (becker@scyld.com)\n";
873 #include <linux/bitops.h>
875 #include <linux/fcntl.h>
876 #include <linux/in.h>
877 #include <linux/interrupt.h>
881 /* These are the operational function interfaces to board-specific
883 void reset_8390(struct net_device *dev)
884 Resets the board associated with DEV, including a hardware reset of
885 the 8390. This is only called when there is a transmit timeout, and
886 it is always followed by 8390_init().
887 void block_output(struct net_device *dev, int count, const unsigned char *buf,
889 Write the COUNT bytes of BUF to the packet buffer at START_PAGE. The
890 "page" value uses the 8390's 256-byte pages.
891 void get_8390_hdr(struct net_device *dev, struct e8390_hdr *hdr, int ring_page)
892 Read the 4 byte, page aligned 8390 header. *If* there is a
893 subsequent read, it will be of the rest of the packet.
894 void block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset)
895 Read COUNT bytes from the packet buffer into the skb data area. Start
896 reading from RING_OFFSET, the address as the 8390 sees it. This will always
897 follow the read of the 8390 header.
899 #define ei_reset_8390 (ei_local->reset_8390)
900 #define ei_block_output (ei_local->block_output)
901 #define ei_block_input (ei_local->block_input)
902 #define ei_get_8390_hdr (ei_local->get_8390_hdr)
904 /* use 0 for production, 1 for verification, >2 for debug */
909 /* Index to functions. */
910 static void ei_tx_intr(struct net_device *dev);
911 static void ei_tx_err(struct net_device *dev);
912 static void ei_receive(struct net_device *dev);
913 static void ei_rx_overrun(struct net_device *dev);
915 /* Routines generic to NS8390-based boards. */
916 static void NS8390_trigger_send(struct net_device *dev, unsigned int length,
918 static void do_set_multicast_list(struct net_device *dev);
921 * SMP and the 8390 setup.
923 * The 8390 isnt exactly designed to be multithreaded on RX/TX. There is
924 * a page register that controls bank and packet buffer access. We guard
925 * this with ei_local->page_lock. Nobody should assume or set the page other
926 * than zero when the lock is not held. Lock holders must restore page 0
927 * before unlocking. Even pure readers must take the lock to protect in
930 * To make life difficult the chip can also be very slow. We therefore can't
931 * just use spinlocks. For the longer lockups we disable the irq the device
932 * sits on and hold the lock. We must hold the lock because there is a dual
933 * processor case other than interrupts (get stats/set multicast list in
934 * parallel with each other and transmit).
936 * Note: in theory we can just disable the irq on the card _but_ there is
937 * a latency on SMP irq delivery. So we can easily go "disable irq" "sync irqs"
938 * enter lock, take the queued irq. So we waddle instead of flying.
940 * Finally by special arrangement for the purpose of being generally
941 * annoying the transmit function is called bh atomic. That places
942 * restrictions on the user context callers as disable_irq won't save
947 * ax_open - Open/initialize the board.
948 * @dev: network device to initialize
950 * This routine goes all-out, setting everything
951 * up anew at each open, even though many of these registers should only
952 * need to be set once at boot.
954 static int ax_open(struct net_device *dev)
957 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
960 * Grab the page lock so we own the register set, then call
964 spin_lock_irqsave(&ei_local->page_lock, flags);
965 AX88190_init(dev, 1);
966 /* Set the flag before we drop the lock, That way the IRQ arrives
967 after its set and we get no silly warnings */
968 netif_start_queue(dev);
969 spin_unlock_irqrestore(&ei_local->page_lock, flags);
970 ei_local->irqlock = 0;
974 #define dev_lock(dev) (((struct ei_device *)netdev_priv(dev))->page_lock)
977 * ax_close - shut down network device
978 * @dev: network device to close
980 * Opposite of ax_open(). Only used when "ifconfig <devname> down" is done.
982 static int ax_close(struct net_device *dev)
987 * Hold the page lock during close
990 spin_lock_irqsave(&dev_lock(dev), flags);
991 AX88190_init(dev, 0);
992 spin_unlock_irqrestore(&dev_lock(dev), flags);
993 netif_stop_queue(dev);
998 * axnet_tx_timeout - handle transmit time out condition
999 * @dev: network device which has apparently fallen asleep
1001 * Called by kernel when device never acknowledges a transmit has
1002 * completed (or failed) - i.e. never posted a Tx related interrupt.
1005 static void axnet_tx_timeout(struct net_device *dev)
1007 long e8390_base = dev->base_addr;
1008 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1009 int txsr, isr, tickssofar = jiffies - dev->trans_start;
1010 unsigned long flags;
1012 dev->stats.tx_errors++;
1014 spin_lock_irqsave(&ei_local->page_lock, flags);
1015 txsr = inb(e8390_base+EN0_TSR);
1016 isr = inb(e8390_base+EN0_ISR);
1017 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1019 printk(KERN_DEBUG "%s: Tx timed out, %s TSR=%#2x, ISR=%#2x, t=%d.\n",
1020 dev->name, (txsr & ENTSR_ABT) ? "excess collisions." :
1021 (isr) ? "lost interrupt?" : "cable problem?", txsr, isr, tickssofar);
1023 if (!isr && !dev->stats.tx_packets)
1025 /* The 8390 probably hasn't gotten on the cable yet. */
1026 ei_local->interface_num ^= 1; /* Try a different xcvr. */
1029 /* Ugly but a reset can be slow, yet must be protected */
1031 spin_lock_irqsave(&ei_local->page_lock, flags);
1033 /* Try to restart the card. Perhaps the user has fixed something. */
1035 AX88190_init(dev, 1);
1037 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1038 netif_wake_queue(dev);
1042 * axnet_start_xmit - begin packet transmission
1043 * @skb: packet to be sent
1044 * @dev: network device to which packet is sent
1046 * Sends a packet to an 8390 network device.
1049 static netdev_tx_t axnet_start_xmit(struct sk_buff *skb,
1050 struct net_device *dev)
1052 long e8390_base = dev->base_addr;
1053 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1054 int length, send_length, output_page;
1055 unsigned long flags;
1056 u8 packet[ETH_ZLEN];
1058 netif_stop_queue(dev);
1062 /* Mask interrupts from the ethercard.
1063 SMP: We have to grab the lock here otherwise the IRQ handler
1064 on another CPU can flip window and race the IRQ mask set. We end
1065 up trashing the mcast filter not disabling irqs if we don't lock */
1067 spin_lock_irqsave(&ei_local->page_lock, flags);
1068 outb_p(0x00, e8390_base + EN0_IMR);
1071 * Slow phase with lock held.
1074 ei_local->irqlock = 1;
1076 send_length = max(length, ETH_ZLEN);
1079 * We have two Tx slots available for use. Find the first free
1080 * slot, and then perform some sanity checks. With two Tx bufs,
1081 * you get very close to transmitting back-to-back packets. With
1082 * only one Tx buf, the transmitter sits idle while you reload the
1083 * card, leaving a substantial gap between each transmitted packet.
1086 if (ei_local->tx1 == 0)
1088 output_page = ei_local->tx_start_page;
1089 ei_local->tx1 = send_length;
1090 if (ei_debug && ei_local->tx2 > 0)
1091 printk(KERN_DEBUG "%s: idle transmitter tx2=%d, lasttx=%d, txing=%d.\n",
1092 dev->name, ei_local->tx2, ei_local->lasttx, ei_local->txing);
1094 else if (ei_local->tx2 == 0)
1096 output_page = ei_local->tx_start_page + TX_PAGES/2;
1097 ei_local->tx2 = send_length;
1098 if (ei_debug && ei_local->tx1 > 0)
1099 printk(KERN_DEBUG "%s: idle transmitter, tx1=%d, lasttx=%d, txing=%d.\n",
1100 dev->name, ei_local->tx1, ei_local->lasttx, ei_local->txing);
1103 { /* We should never get here. */
1105 printk(KERN_DEBUG "%s: No Tx buffers free! tx1=%d tx2=%d last=%d\n",
1106 dev->name, ei_local->tx1, ei_local->tx2, ei_local->lasttx);
1107 ei_local->irqlock = 0;
1108 netif_stop_queue(dev);
1109 outb_p(ENISR_ALL, e8390_base + EN0_IMR);
1110 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1111 dev->stats.tx_errors++;
1112 return NETDEV_TX_BUSY;
1116 * Okay, now upload the packet and trigger a send if the transmitter
1117 * isn't already sending. If it is busy, the interrupt handler will
1118 * trigger the send later, upon receiving a Tx done interrupt.
1121 if (length == skb->len)
1122 ei_block_output(dev, length, skb->data, output_page);
1124 memset(packet, 0, ETH_ZLEN);
1125 skb_copy_from_linear_data(skb, packet, skb->len);
1126 ei_block_output(dev, length, packet, output_page);
1129 if (! ei_local->txing)
1131 ei_local->txing = 1;
1132 NS8390_trigger_send(dev, send_length, output_page);
1133 dev->trans_start = jiffies;
1134 if (output_page == ei_local->tx_start_page)
1137 ei_local->lasttx = -1;
1142 ei_local->lasttx = -2;
1145 else ei_local->txqueue++;
1147 if (ei_local->tx1 && ei_local->tx2)
1148 netif_stop_queue(dev);
1150 netif_start_queue(dev);
1152 /* Turn 8390 interrupts back on. */
1153 ei_local->irqlock = 0;
1154 outb_p(ENISR_ALL, e8390_base + EN0_IMR);
1156 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1158 dev_kfree_skb (skb);
1159 dev->stats.tx_bytes += send_length;
1161 return NETDEV_TX_OK;
1165 * ax_interrupt - handle the interrupts from an 8390
1166 * @irq: interrupt number
1167 * @dev_id: a pointer to the net_device
1169 * Handle the ether interface interrupts. We pull packets from
1170 * the 8390 via the card specific functions and fire them at the networking
1171 * stack. We also handle transmit completions and wake the transmit path if
1172 * necessary. We also update the counters and do other housekeeping as
1176 static irqreturn_t ax_interrupt(int irq, void *dev_id)
1178 struct net_device *dev = dev_id;
1180 int interrupts, nr_serviced = 0, i;
1181 struct ei_device *ei_local;
1184 e8390_base = dev->base_addr;
1185 ei_local = netdev_priv(dev);
1188 * Protect the irq test too.
1191 spin_lock(&ei_local->page_lock);
1193 if (ei_local->irqlock)
1195 #if 1 /* This might just be an interrupt for a PCI device sharing this line */
1196 /* The "irqlock" check is only for testing. */
1197 printk(ei_local->irqlock
1198 ? "%s: Interrupted while interrupts are masked! isr=%#2x imr=%#2x.\n"
1199 : "%s: Reentering the interrupt handler! isr=%#2x imr=%#2x.\n",
1200 dev->name, inb_p(e8390_base + EN0_ISR),
1201 inb_p(e8390_base + EN0_IMR));
1203 spin_unlock(&ei_local->page_lock);
1208 printk(KERN_DEBUG "%s: interrupt(isr=%#2.2x).\n", dev->name,
1209 inb_p(e8390_base + EN0_ISR));
1211 outb_p(0x00, e8390_base + EN0_ISR);
1212 ei_local->irqlock = 1;
1214 /* !!Assumption!! -- we stay in page 0. Don't break this. */
1215 while ((interrupts = inb_p(e8390_base + EN0_ISR)) != 0 &&
1216 ++nr_serviced < MAX_SERVICE)
1218 if (!netif_running(dev) || (interrupts == 0xff)) {
1220 printk(KERN_WARNING "%s: interrupt from stopped card\n", dev->name);
1221 outb_p(interrupts, e8390_base + EN0_ISR);
1227 /* AX88190 bug fix. */
1228 outb_p(interrupts, e8390_base + EN0_ISR);
1229 for (i = 0; i < 10; i++) {
1230 if (!(inb(e8390_base + EN0_ISR) & interrupts))
1232 outb_p(0, e8390_base + EN0_ISR);
1233 outb_p(interrupts, e8390_base + EN0_ISR);
1235 if (interrupts & ENISR_OVER)
1237 else if (interrupts & (ENISR_RX+ENISR_RX_ERR))
1239 /* Got a good (?) packet. */
1242 /* Push the next to-transmit packet through. */
1243 if (interrupts & ENISR_TX)
1245 else if (interrupts & ENISR_TX_ERR)
1248 if (interrupts & ENISR_COUNTERS)
1250 dev->stats.rx_frame_errors += inb_p(e8390_base + EN0_COUNTER0);
1251 dev->stats.rx_crc_errors += inb_p(e8390_base + EN0_COUNTER1);
1252 dev->stats.rx_missed_errors+= inb_p(e8390_base + EN0_COUNTER2);
1256 if (interrupts && ei_debug > 3)
1259 if (nr_serviced >= MAX_SERVICE)
1261 /* 0xFF is valid for a card removal */
1262 if(interrupts!=0xFF)
1263 printk(KERN_WARNING "%s: Too much work at interrupt, status %#2.2x\n",
1264 dev->name, interrupts);
1265 outb_p(ENISR_ALL, e8390_base + EN0_ISR); /* Ack. most intrs. */
1267 printk(KERN_WARNING "%s: unknown interrupt %#2x\n", dev->name, interrupts);
1268 outb_p(0xff, e8390_base + EN0_ISR); /* Ack. all intrs. */
1272 /* Turn 8390 interrupts back on. */
1273 ei_local->irqlock = 0;
1274 outb_p(ENISR_ALL, e8390_base + EN0_IMR);
1276 spin_unlock(&ei_local->page_lock);
1277 return IRQ_RETVAL(handled);
1281 * ei_tx_err - handle transmitter error
1282 * @dev: network device which threw the exception
1284 * A transmitter error has happened. Most likely excess collisions (which
1285 * is a fairly normal condition). If the error is one where the Tx will
1286 * have been aborted, we try and send another one right away, instead of
1287 * letting the failed packet sit and collect dust in the Tx buffer. This
1288 * is a much better solution as it avoids kernel based Tx timeouts, and
1289 * an unnecessary card reset.
1291 * Called with lock held.
1294 static void ei_tx_err(struct net_device *dev)
1296 long e8390_base = dev->base_addr;
1297 unsigned char txsr = inb_p(e8390_base+EN0_TSR);
1298 unsigned char tx_was_aborted = txsr & (ENTSR_ABT+ENTSR_FU);
1300 #ifdef VERBOSE_ERROR_DUMP
1301 printk(KERN_DEBUG "%s: transmitter error (%#2x): ", dev->name, txsr);
1302 if (txsr & ENTSR_ABT)
1303 printk("excess-collisions ");
1304 if (txsr & ENTSR_ND)
1305 printk("non-deferral ");
1306 if (txsr & ENTSR_CRS)
1307 printk("lost-carrier ");
1308 if (txsr & ENTSR_FU)
1309 printk("FIFO-underrun ");
1310 if (txsr & ENTSR_CDH)
1311 printk("lost-heartbeat ");
1319 dev->stats.tx_errors++;
1320 if (txsr & ENTSR_CRS) dev->stats.tx_carrier_errors++;
1321 if (txsr & ENTSR_CDH) dev->stats.tx_heartbeat_errors++;
1322 if (txsr & ENTSR_OWC) dev->stats.tx_window_errors++;
1327 * ei_tx_intr - transmit interrupt handler
1328 * @dev: network device for which tx intr is handled
1330 * We have finished a transmit: check for errors and then trigger the next
1331 * packet to be sent. Called with lock held.
1334 static void ei_tx_intr(struct net_device *dev)
1336 long e8390_base = dev->base_addr;
1337 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1338 int status = inb(e8390_base + EN0_TSR);
1341 * There are two Tx buffers, see which one finished, and trigger
1342 * the send of another one if it exists.
1344 ei_local->txqueue--;
1346 if (ei_local->tx1 < 0)
1348 if (ei_local->lasttx != 1 && ei_local->lasttx != -1)
1349 printk(KERN_ERR "%s: bogus last_tx_buffer %d, tx1=%d.\n",
1350 ei_local->name, ei_local->lasttx, ei_local->tx1);
1352 if (ei_local->tx2 > 0)
1354 ei_local->txing = 1;
1355 NS8390_trigger_send(dev, ei_local->tx2, ei_local->tx_start_page + 6);
1356 dev->trans_start = jiffies;
1358 ei_local->lasttx = 2;
1360 else ei_local->lasttx = 20, ei_local->txing = 0;
1362 else if (ei_local->tx2 < 0)
1364 if (ei_local->lasttx != 2 && ei_local->lasttx != -2)
1365 printk("%s: bogus last_tx_buffer %d, tx2=%d.\n",
1366 ei_local->name, ei_local->lasttx, ei_local->tx2);
1368 if (ei_local->tx1 > 0)
1370 ei_local->txing = 1;
1371 NS8390_trigger_send(dev, ei_local->tx1, ei_local->tx_start_page);
1372 dev->trans_start = jiffies;
1374 ei_local->lasttx = 1;
1377 ei_local->lasttx = 10, ei_local->txing = 0;
1379 // else printk(KERN_WARNING "%s: unexpected TX-done interrupt, lasttx=%d.\n",
1380 // dev->name, ei_local->lasttx);
1382 /* Minimize Tx latency: update the statistics after we restart TXing. */
1383 if (status & ENTSR_COL)
1384 dev->stats.collisions++;
1385 if (status & ENTSR_PTX)
1386 dev->stats.tx_packets++;
1389 dev->stats.tx_errors++;
1390 if (status & ENTSR_ABT)
1392 dev->stats.tx_aborted_errors++;
1393 dev->stats.collisions += 16;
1395 if (status & ENTSR_CRS)
1396 dev->stats.tx_carrier_errors++;
1397 if (status & ENTSR_FU)
1398 dev->stats.tx_fifo_errors++;
1399 if (status & ENTSR_CDH)
1400 dev->stats.tx_heartbeat_errors++;
1401 if (status & ENTSR_OWC)
1402 dev->stats.tx_window_errors++;
1404 netif_wake_queue(dev);
1408 * ei_receive - receive some packets
1409 * @dev: network device with which receive will be run
1411 * We have a good packet(s), get it/them out of the buffers.
1412 * Called with lock held.
1415 static void ei_receive(struct net_device *dev)
1417 long e8390_base = dev->base_addr;
1418 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1419 unsigned char rxing_page, this_frame, next_frame;
1420 unsigned short current_offset;
1421 int rx_pkt_count = 0;
1422 struct e8390_pkt_hdr rx_frame;
1424 while (++rx_pkt_count < 10)
1426 int pkt_len, pkt_stat;
1428 /* Get the rx page (incoming packet pointer). */
1429 rxing_page = inb_p(e8390_base + EN1_CURPAG -1);
1431 /* Remove one frame from the ring. Boundary is always a page behind. */
1432 this_frame = inb_p(e8390_base + EN0_BOUNDARY) + 1;
1433 if (this_frame >= ei_local->stop_page)
1434 this_frame = ei_local->rx_start_page;
1436 /* Someday we'll omit the previous, iff we never get this message.
1437 (There is at least one clone claimed to have a problem.)
1439 Keep quiet if it looks like a card removal. One problem here
1440 is that some clones crash in roughly the same way.
1442 if (ei_debug > 0 && this_frame != ei_local->current_page && (this_frame!=0x0 || rxing_page!=0xFF))
1443 printk(KERN_ERR "%s: mismatched read page pointers %2x vs %2x.\n",
1444 dev->name, this_frame, ei_local->current_page);
1446 if (this_frame == rxing_page) /* Read all the frames? */
1447 break; /* Done for now */
1449 current_offset = this_frame << 8;
1450 ei_get_8390_hdr(dev, &rx_frame, this_frame);
1452 pkt_len = rx_frame.count - sizeof(struct e8390_pkt_hdr);
1453 pkt_stat = rx_frame.status;
1455 next_frame = this_frame + 1 + ((pkt_len+4)>>8);
1457 if (pkt_len < 60 || pkt_len > 1518)
1460 printk(KERN_DEBUG "%s: bogus packet size: %d, status=%#2x nxpg=%#2x.\n",
1461 dev->name, rx_frame.count, rx_frame.status,
1463 dev->stats.rx_errors++;
1464 dev->stats.rx_length_errors++;
1466 else if ((pkt_stat & 0x0F) == ENRSR_RXOK)
1468 struct sk_buff *skb;
1470 skb = dev_alloc_skb(pkt_len+2);
1474 printk(KERN_DEBUG "%s: Couldn't allocate a sk_buff of size %d.\n",
1475 dev->name, pkt_len);
1476 dev->stats.rx_dropped++;
1481 skb_reserve(skb,2); /* IP headers on 16 byte boundaries */
1482 skb_put(skb, pkt_len); /* Make room */
1483 ei_block_input(dev, pkt_len, skb, current_offset + sizeof(rx_frame));
1484 skb->protocol=eth_type_trans(skb,dev);
1486 dev->stats.rx_packets++;
1487 dev->stats.rx_bytes += pkt_len;
1488 if (pkt_stat & ENRSR_PHY)
1489 dev->stats.multicast++;
1495 printk(KERN_DEBUG "%s: bogus packet: status=%#2x nxpg=%#2x size=%d\n",
1496 dev->name, rx_frame.status, rx_frame.next,
1498 dev->stats.rx_errors++;
1499 /* NB: The NIC counts CRC, frame and missed errors. */
1500 if (pkt_stat & ENRSR_FO)
1501 dev->stats.rx_fifo_errors++;
1503 next_frame = rx_frame.next;
1505 /* This _should_ never happen: it's here for avoiding bad clones. */
1506 if (next_frame >= ei_local->stop_page) {
1507 printk("%s: next frame inconsistency, %#2x\n", dev->name,
1509 next_frame = ei_local->rx_start_page;
1511 ei_local->current_page = next_frame;
1512 outb_p(next_frame-1, e8390_base+EN0_BOUNDARY);
1519 * ei_rx_overrun - handle receiver overrun
1520 * @dev: network device which threw exception
1522 * We have a receiver overrun: we have to kick the 8390 to get it started
1523 * again. Problem is that you have to kick it exactly as NS prescribes in
1524 * the updated datasheets, or "the NIC may act in an unpredictable manner."
1525 * This includes causing "the NIC to defer indefinitely when it is stopped
1526 * on a busy network." Ugh.
1527 * Called with lock held. Don't call this with the interrupts off or your
1528 * computer will hate you - it takes 10ms or so.
1531 static void ei_rx_overrun(struct net_device *dev)
1533 axnet_dev_t *info = PRIV(dev);
1534 long e8390_base = dev->base_addr;
1535 unsigned char was_txing, must_resend = 0;
1538 * Record whether a Tx was in progress and then issue the
1541 was_txing = inb_p(e8390_base+E8390_CMD) & E8390_TRANS;
1542 outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD);
1545 printk(KERN_DEBUG "%s: Receiver overrun.\n", dev->name);
1546 dev->stats.rx_over_errors++;
1549 * Wait a full Tx time (1.2ms) + some guard time, NS says 1.6ms total.
1550 * Early datasheets said to poll the reset bit, but now they say that
1551 * it "is not a reliable indicator and subsequently should be ignored."
1552 * We wait at least 10ms.
1558 * Reset RBCR[01] back to zero as per magic incantation.
1560 outb_p(0x00, e8390_base+EN0_RCNTLO);
1561 outb_p(0x00, e8390_base+EN0_RCNTHI);
1564 * See if any Tx was interrupted or not. According to NS, this
1565 * step is vital, and skipping it will cause no end of havoc.
1570 unsigned char tx_completed = inb_p(e8390_base+EN0_ISR) & (ENISR_TX+ENISR_TX_ERR);
1576 * Have to enter loopback mode and then restart the NIC before
1577 * you are allowed to slurp packets up off the ring.
1579 outb_p(E8390_TXOFF, e8390_base + EN0_TXCR);
1580 outb_p(E8390_NODMA + E8390_PAGE0 + E8390_START, e8390_base + E8390_CMD);
1583 * Clear the Rx ring of all the debris, and ack the interrupt.
1588 * Leave loopback mode, and resend any packet that got stopped.
1590 outb_p(E8390_TXCONFIG | info->duplex_flag, e8390_base + EN0_TXCR);
1592 outb_p(E8390_NODMA + E8390_PAGE0 + E8390_START + E8390_TRANS, e8390_base + E8390_CMD);
1596 * Collect the stats. This is called unlocked and from several contexts.
1599 static struct net_device_stats *get_stats(struct net_device *dev)
1601 long ioaddr = dev->base_addr;
1602 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1603 unsigned long flags;
1605 /* If the card is stopped, just return the present stats. */
1606 if (!netif_running(dev))
1609 spin_lock_irqsave(&ei_local->page_lock,flags);
1610 /* Read the counter registers, assuming we are in page 0. */
1611 dev->stats.rx_frame_errors += inb_p(ioaddr + EN0_COUNTER0);
1612 dev->stats.rx_crc_errors += inb_p(ioaddr + EN0_COUNTER1);
1613 dev->stats.rx_missed_errors+= inb_p(ioaddr + EN0_COUNTER2);
1614 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1620 * Form the 64 bit 8390 multicast table from the linked list of addresses
1621 * associated with this dev structure.
1624 static inline void make_mc_bits(u8 *bits, struct net_device *dev)
1626 struct dev_mc_list *dmi;
1629 netdev_for_each_mc_addr(dmi, dev) {
1630 crc = ether_crc(ETH_ALEN, dmi->dmi_addr);
1632 * The 8390 uses the 6 most significant bits of the
1633 * CRC to index the multicast table.
1635 bits[crc>>29] |= (1<<((crc>>26)&7));
1640 * do_set_multicast_list - set/clear multicast filter
1641 * @dev: net device for which multicast filter is adjusted
1643 * Set or clear the multicast filter for this adaptor.
1644 * Must be called with lock held.
1647 static void do_set_multicast_list(struct net_device *dev)
1649 long e8390_base = dev->base_addr;
1651 struct ei_device *ei_local = (struct ei_device*)netdev_priv(dev);
1653 if (!(dev->flags&(IFF_PROMISC|IFF_ALLMULTI))) {
1654 memset(ei_local->mcfilter, 0, 8);
1655 if (!netdev_mc_empty(dev))
1656 make_mc_bits(ei_local->mcfilter, dev);
1658 /* set to accept-all */
1659 memset(ei_local->mcfilter, 0xFF, 8);
1662 outb_p(E8390_NODMA + E8390_PAGE1, e8390_base + E8390_CMD);
1663 for(i = 0; i < 8; i++)
1665 outb_p(ei_local->mcfilter[i], e8390_base + EN1_MULT_SHIFT(i));
1667 outb_p(E8390_NODMA + E8390_PAGE0, e8390_base + E8390_CMD);
1669 if(dev->flags&IFF_PROMISC)
1670 outb_p(E8390_RXCONFIG | 0x58, e8390_base + EN0_RXCR);
1671 else if (dev->flags & IFF_ALLMULTI || !netdev_mc_empty(dev))
1672 outb_p(E8390_RXCONFIG | 0x48, e8390_base + EN0_RXCR);
1674 outb_p(E8390_RXCONFIG | 0x40, e8390_base + EN0_RXCR);
1676 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, e8390_base+E8390_CMD);
1680 * Called without lock held. This is invoked from user context and may
1681 * be parallel to just about everything else. Its also fairly quick and
1682 * not called too often. Must protect against both bh and irq users
1685 static void set_multicast_list(struct net_device *dev)
1687 unsigned long flags;
1689 spin_lock_irqsave(&dev_lock(dev), flags);
1690 do_set_multicast_list(dev);
1691 spin_unlock_irqrestore(&dev_lock(dev), flags);
1694 /* This page of functions should be 8390 generic */
1695 /* Follow National Semi's recommendations for initializing the "NIC". */
1698 * AX88190_init - initialize 8390 hardware
1699 * @dev: network device to initialize
1700 * @startp: boolean. non-zero value to initiate chip processing
1702 * Must be called with lock held.
1705 static void AX88190_init(struct net_device *dev, int startp)
1707 axnet_dev_t *info = PRIV(dev);
1708 long e8390_base = dev->base_addr;
1709 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1711 int endcfg = ei_local->word16 ? (0x48 | ENDCFG_WTS) : 0x48;
1713 if(sizeof(struct e8390_pkt_hdr)!=4)
1714 panic("8390.c: header struct mispacked\n");
1715 /* Follow National Semi's recommendations for initing the DP83902. */
1716 outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD); /* 0x21 */
1717 outb_p(endcfg, e8390_base + EN0_DCFG); /* 0x48 or 0x49 */
1718 /* Clear the remote byte count registers. */
1719 outb_p(0x00, e8390_base + EN0_RCNTLO);
1720 outb_p(0x00, e8390_base + EN0_RCNTHI);
1721 /* Set to monitor and loopback mode -- this is vital!. */
1722 outb_p(E8390_RXOFF|0x40, e8390_base + EN0_RXCR); /* 0x60 */
1723 outb_p(E8390_TXOFF, e8390_base + EN0_TXCR); /* 0x02 */
1724 /* Set the transmit page and receive ring. */
1725 outb_p(ei_local->tx_start_page, e8390_base + EN0_TPSR);
1726 ei_local->tx1 = ei_local->tx2 = 0;
1727 outb_p(ei_local->rx_start_page, e8390_base + EN0_STARTPG);
1728 outb_p(ei_local->stop_page-1, e8390_base + EN0_BOUNDARY); /* 3c503 says 0x3f,NS0x26*/
1729 ei_local->current_page = ei_local->rx_start_page; /* assert boundary+1 */
1730 outb_p(ei_local->stop_page, e8390_base + EN0_STOPPG);
1731 /* Clear the pending interrupts and mask. */
1732 outb_p(0xFF, e8390_base + EN0_ISR);
1733 outb_p(0x00, e8390_base + EN0_IMR);
1735 /* Copy the station address into the DS8390 registers. */
1737 outb_p(E8390_NODMA + E8390_PAGE1 + E8390_STOP, e8390_base+E8390_CMD); /* 0x61 */
1738 for(i = 0; i < 6; i++)
1740 outb_p(dev->dev_addr[i], e8390_base + EN1_PHYS_SHIFT(i));
1741 if(inb_p(e8390_base + EN1_PHYS_SHIFT(i))!=dev->dev_addr[i])
1742 printk(KERN_ERR "Hw. address read/write mismap %d\n",i);
1745 outb_p(ei_local->rx_start_page, e8390_base + EN1_CURPAG);
1746 outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD);
1748 netif_start_queue(dev);
1749 ei_local->tx1 = ei_local->tx2 = 0;
1750 ei_local->txing = 0;
1752 if (info->flags & IS_AX88790) /* select Internal PHY */
1753 outb(0x10, e8390_base + AXNET_GPIO);
1757 outb_p(0xff, e8390_base + EN0_ISR);
1758 outb_p(ENISR_ALL, e8390_base + EN0_IMR);
1759 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, e8390_base+E8390_CMD);
1760 outb_p(E8390_TXCONFIG | info->duplex_flag,
1761 e8390_base + EN0_TXCR); /* xmit on. */
1762 /* 3c503 TechMan says rxconfig only after the NIC is started. */
1763 outb_p(E8390_RXCONFIG | 0x40, e8390_base + EN0_RXCR); /* rx on, */
1764 do_set_multicast_list(dev); /* (re)load the mcast table */
1768 /* Trigger a transmit start, assuming the length is valid.
1769 Always called with the page lock held */
1771 static void NS8390_trigger_send(struct net_device *dev, unsigned int length,
1774 long e8390_base = dev->base_addr;
1775 struct ei_device *ei_local __attribute((unused)) = (struct ei_device *) netdev_priv(dev);
1777 if (inb_p(e8390_base) & E8390_TRANS)
1779 printk(KERN_WARNING "%s: trigger_send() called with the transmitter busy.\n",
1783 outb_p(length & 0xff, e8390_base + EN0_TCNTLO);
1784 outb_p(length >> 8, e8390_base + EN0_TCNTHI);
1785 outb_p(start_page, e8390_base + EN0_TPSR);
1786 outb_p(E8390_NODMA+E8390_TRANS+E8390_START, e8390_base+E8390_CMD);