1 /*======================================================================
3 A PCMCIA ethernet driver for Asix AX88190-based cards
5 The Asix AX88190 is a NS8390-derived chipset with a few nasty
6 idiosyncracies that make it very inconvenient to support with a
7 standard 8390 driver. This driver is based on pcnet_cs, with the
8 tweaked 8390 code grafted on the end. Much of what I did was to
9 clean up and update a similar driver supplied by Asix, which was
10 adapted by William Lee, william@asix.com.tw.
12 Copyright (C) 2001 David A. Hinds -- dahinds@users.sourceforge.net
14 axnet_cs.c 1.28 2002/06/29 06:27:37
16 The network driver code is based on Donald Becker's NE2000 code:
18 Written 1992,1993 by Donald Becker.
19 Copyright 1993 United States Government as represented by the
20 Director, National Security Agency. This software may be used and
21 distributed according to the terms of the GNU General Public License,
22 incorporated herein by reference.
23 Donald Becker may be reached at becker@scyld.com
25 ======================================================================*/
27 #include <linux/kernel.h>
28 #include <linux/module.h>
29 #include <linux/init.h>
30 #include <linux/ptrace.h>
31 #include <linux/slab.h>
32 #include <linux/string.h>
33 #include <linux/timer.h>
34 #include <linux/delay.h>
35 #include <linux/spinlock.h>
36 #include <linux/ethtool.h>
37 #include <linux/netdevice.h>
38 #include <linux/crc32.h>
41 #include <pcmcia/cs_types.h>
42 #include <pcmcia/cs.h>
43 #include <pcmcia/cistpl.h>
44 #include <pcmcia/ciscode.h>
45 #include <pcmcia/ds.h>
46 #include <pcmcia/cisreg.h>
49 #include <asm/system.h>
50 #include <asm/byteorder.h>
51 #include <asm/uaccess.h>
53 #define AXNET_CMD 0x00
54 #define AXNET_DATAPORT 0x10 /* NatSemi-defined port window offset. */
55 #define AXNET_RESET 0x1f /* Issue a read to reset, a write to clear. */
56 #define AXNET_MII_EEP 0x14 /* Offset of MII access port */
57 #define AXNET_TEST 0x15 /* Offset of TEST Register port */
58 #define AXNET_GPIO 0x17 /* Offset of General Purpose Register Port */
60 #define AXNET_START_PG 0x40 /* First page of TX buffer */
61 #define AXNET_STOP_PG 0x80 /* Last page +1 of RX ring */
63 #define AXNET_RDC_TIMEOUT 0x02 /* Max wait in jiffies for Tx RDC */
65 #define IS_AX88190 0x0001
66 #define IS_AX88790 0x0002
68 /*====================================================================*/
70 /* Module parameters */
72 MODULE_AUTHOR("David Hinds <dahinds@users.sourceforge.net>");
73 MODULE_DESCRIPTION("Asix AX88190 PCMCIA ethernet driver");
74 MODULE_LICENSE("GPL");
77 #define INT_MODULE_PARM(n, v) static int n = v; module_param(n, int, 0)
79 INT_MODULE_PARM(pc_debug, PCMCIA_DEBUG);
80 #define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args)
81 static char *version =
82 "axnet_cs.c 1.28 2002/06/29 06:27:37 (David Hinds)";
84 #define DEBUG(n, args...)
87 /*====================================================================*/
89 static int axnet_config(struct pcmcia_device *link);
90 static void axnet_release(struct pcmcia_device *link);
91 static int axnet_open(struct net_device *dev);
92 static int axnet_close(struct net_device *dev);
93 static int axnet_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
94 static const struct ethtool_ops netdev_ethtool_ops;
95 static irqreturn_t ei_irq_wrapper(int irq, void *dev_id);
96 static void ei_watchdog(u_long arg);
97 static void axnet_reset_8390(struct net_device *dev);
99 static int mdio_read(unsigned int addr, int phy_id, int loc);
100 static void mdio_write(unsigned int addr, int phy_id, int loc, int value);
102 static void get_8390_hdr(struct net_device *,
103 struct e8390_pkt_hdr *, int);
104 static void block_input(struct net_device *dev, int count,
105 struct sk_buff *skb, int ring_offset);
106 static void block_output(struct net_device *dev, int count,
107 const u_char *buf, const int start_page);
109 static void axnet_detach(struct pcmcia_device *p_dev);
111 static void axdev_setup(struct net_device *dev);
112 static void AX88190_init(struct net_device *dev, int startp);
113 static int ax_open(struct net_device *dev);
114 static int ax_close(struct net_device *dev);
115 static irqreturn_t ax_interrupt(int irq, void *dev_id);
117 /*====================================================================*/
119 typedef struct axnet_dev_t {
120 struct pcmcia_device *p_dev;
123 struct timer_list watchdog;
124 int stale, fast_poll;
131 static inline axnet_dev_t *PRIV(struct net_device *dev)
133 void *p = (char *)netdev_priv(dev) + sizeof(struct ei_device);
137 /*======================================================================
139 axnet_attach() creates an "instance" of the driver, allocating
140 local data structures for one device. The device is registered
143 ======================================================================*/
145 static int axnet_probe(struct pcmcia_device *link)
148 struct net_device *dev;
150 DEBUG(0, "axnet_attach()\n");
152 dev = alloc_netdev(sizeof(struct ei_device) + sizeof(axnet_dev_t),
153 "eth%d", axdev_setup);
161 link->irq.Attributes = IRQ_TYPE_DYNAMIC_SHARING;
162 link->irq.IRQInfo1 = IRQ_LEVEL_ID;
163 link->conf.Attributes = CONF_ENABLE_IRQ;
164 link->conf.IntType = INT_MEMORY_AND_IO;
166 dev->open = &axnet_open;
167 dev->stop = &axnet_close;
168 dev->do_ioctl = &axnet_ioctl;
169 SET_ETHTOOL_OPS(dev, &netdev_ethtool_ops);
171 return axnet_config(link);
174 /*======================================================================
176 This deletes a driver "instance". The device is de-registered
177 with Card Services. If it has been released, all local data
178 structures are freed. Otherwise, the structures will be freed
179 when the device is released.
181 ======================================================================*/
183 static void axnet_detach(struct pcmcia_device *link)
185 struct net_device *dev = link->priv;
187 DEBUG(0, "axnet_detach(0x%p)\n", link);
190 unregister_netdev(dev);
197 /*======================================================================
199 This probes for a card's hardware address by reading the PROM.
201 ======================================================================*/
203 static int get_prom(struct pcmcia_device *link)
205 struct net_device *dev = link->priv;
206 unsigned int ioaddr = dev->base_addr;
209 /* This is based on drivers/net/ne.c */
211 u_char value, offset;
213 {E8390_NODMA+E8390_PAGE0+E8390_STOP, E8390_CMD}, /* Select page 0*/
214 {0x01, EN0_DCFG}, /* Set word-wide access. */
215 {0x00, EN0_RCNTLO}, /* Clear the count regs. */
217 {0x00, EN0_IMR}, /* Mask completion irq. */
219 {E8390_RXOFF|0x40, EN0_RXCR}, /* 0x60 Set to monitor */
220 {E8390_TXOFF, EN0_TXCR}, /* 0x02 and loopback mode. */
223 {0x00, EN0_RSARLO}, /* DMA starting at 0x0400. */
225 {E8390_RREAD+E8390_START, E8390_CMD},
228 /* Not much of a test, but the alternatives are messy */
229 if (link->conf.ConfigBase != 0x03c0)
232 axnet_reset_8390(dev);
235 for (i = 0; i < ARRAY_SIZE(program_seq); i++)
236 outb_p(program_seq[i].value, ioaddr + program_seq[i].offset);
238 for (i = 0; i < 6; i += 2) {
239 j = inw(ioaddr + AXNET_DATAPORT);
240 dev->dev_addr[i] = j & 0xff;
241 dev->dev_addr[i+1] = j >> 8;
246 /*======================================================================
248 axnet_config() is scheduled to run after a CARD_INSERTION event
249 is received, to configure the PCMCIA socket, and to make the
250 ethernet device available to the system.
252 ======================================================================*/
254 #define CS_CHECK(fn, ret) \
255 do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
257 static int try_io_port(struct pcmcia_device *link)
260 if (link->io.NumPorts1 == 32) {
261 link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;
262 if (link->io.NumPorts2 > 0) {
263 /* for master/slave multifunction cards */
264 link->io.Attributes2 = IO_DATA_PATH_WIDTH_8;
265 link->irq.Attributes =
266 IRQ_TYPE_DYNAMIC_SHARING|IRQ_FIRST_SHARED;
269 /* This should be two 16-port windows */
270 link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
271 link->io.Attributes2 = IO_DATA_PATH_WIDTH_16;
273 if (link->io.BasePort1 == 0) {
274 link->io.IOAddrLines = 16;
275 for (j = 0; j < 0x400; j += 0x20) {
276 link->io.BasePort1 = j ^ 0x300;
277 link->io.BasePort2 = (j ^ 0x300) + 0x10;
278 ret = pcmcia_request_io(link, &link->io);
284 return pcmcia_request_io(link, &link->io);
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->io.BasePort2 = io->win[1-i].base;
306 p_dev->io.NumPorts2 = io->win[1-i].len;
308 i = p_dev->io.NumPorts2 = 0;
310 p_dev->io.BasePort1 = io->win[i].base;
311 p_dev->io.NumPorts1 = io->win[i].len;
312 p_dev->io.IOAddrLines = io->flags & CISTPL_IO_LINES_MASK;
313 if (p_dev->io.NumPorts1 + p_dev->io.NumPorts2 >= 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);
323 int i, j, last_ret, last_fn;
324 DECLARE_MAC_BUF(mac);
326 DEBUG(0, "axnet_config(0x%p)\n", link);
328 /* don't trust the CIS on this; Linksys got it wrong */
329 link->conf.Present = 0x63;
330 last_ret = pcmcia_loop_config(link, axnet_configcheck, NULL);
332 cs_error(link, RequestIO, last_ret);
336 CS_CHECK(RequestIRQ, pcmcia_request_irq(link, &link->irq));
338 if (link->io.NumPorts2 == 8) {
339 link->conf.Attributes |= CONF_ENABLE_SPKR;
340 link->conf.Status = CCSR_AUDIO_ENA;
343 CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link, &link->conf));
344 dev->irq = link->irq.AssignedIRQ;
345 dev->base_addr = link->io.BasePort1;
347 if (!get_prom(link)) {
348 printk(KERN_NOTICE "axnet_cs: this is not an AX88190 card!\n");
349 printk(KERN_NOTICE "axnet_cs: use pcnet_cs instead.\n");
353 ei_status.name = "AX88190";
354 ei_status.word16 = 1;
355 ei_status.tx_start_page = AXNET_START_PG;
356 ei_status.rx_start_page = AXNET_START_PG + TX_PAGES;
357 ei_status.stop_page = AXNET_STOP_PG;
358 ei_status.reset_8390 = &axnet_reset_8390;
359 ei_status.get_8390_hdr = &get_8390_hdr;
360 ei_status.block_input = &block_input;
361 ei_status.block_output = &block_output;
363 if (inb(dev->base_addr + AXNET_TEST) != 0)
364 info->flags |= IS_AX88790;
366 info->flags |= IS_AX88190;
368 if (info->flags & IS_AX88790)
369 outb(0x10, dev->base_addr + AXNET_GPIO); /* select Internal PHY */
371 for (i = 0; i < 32; i++) {
372 j = mdio_read(dev->base_addr + AXNET_MII_EEP, i, 1);
373 if ((j != 0) && (j != 0xffff)) break;
376 /* Maybe PHY is in power down mode. (PPD_SET = 1)
377 Bit 2 of CCSR is active low. */
379 conf_reg_t reg = { 0, CS_WRITE, CISREG_CCSR, 0x04 };
380 pcmcia_access_configuration_register(link, ®);
381 for (i = 0; i < 32; i++) {
382 j = mdio_read(dev->base_addr + AXNET_MII_EEP, i, 1);
383 if ((j != 0) && (j != 0xffff)) break;
387 info->phy_id = (i < 32) ? i : -1;
388 link->dev_node = &info->node;
389 SET_NETDEV_DEV(dev, &handle_to_dev(link));
391 if (register_netdev(dev) != 0) {
392 printk(KERN_NOTICE "axnet_cs: register_netdev() failed\n");
393 link->dev_node = NULL;
397 strcpy(info->node.dev_name, dev->name);
399 printk(KERN_INFO "%s: Asix AX88%d90: io %#3lx, irq %d, "
401 dev->name, ((info->flags & IS_AX88790) ? 7 : 1),
402 dev->base_addr, dev->irq,
403 print_mac(mac, dev->dev_addr));
404 if (info->phy_id != -1) {
405 DEBUG(0, " MII transceiver at index %d, status %x.\n", info->phy_id, j);
407 printk(KERN_NOTICE " No MII transceivers found!\n");
412 cs_error(link, last_fn, last_ret);
418 /*======================================================================
420 After a card is removed, axnet_release() will unregister the net
421 device, and release the PCMCIA configuration. If the device is
422 still open, this will be postponed until it is closed.
424 ======================================================================*/
426 static void axnet_release(struct pcmcia_device *link)
428 pcmcia_disable_device(link);
431 static int axnet_suspend(struct pcmcia_device *link)
433 struct net_device *dev = link->priv;
436 netif_device_detach(dev);
441 static int axnet_resume(struct pcmcia_device *link)
443 struct net_device *dev = link->priv;
446 axnet_reset_8390(dev);
447 AX88190_init(dev, 1);
448 netif_device_attach(dev);
455 /*======================================================================
457 MII interface support
459 ======================================================================*/
461 #define MDIO_SHIFT_CLK 0x01
462 #define MDIO_DATA_WRITE0 0x00
463 #define MDIO_DATA_WRITE1 0x08
464 #define MDIO_DATA_READ 0x04
465 #define MDIO_MASK 0x0f
466 #define MDIO_ENB_IN 0x02
468 static void mdio_sync(unsigned int addr)
471 for (bits = 0; bits < 32; bits++) {
472 outb_p(MDIO_DATA_WRITE1, addr);
473 outb_p(MDIO_DATA_WRITE1 | MDIO_SHIFT_CLK, addr);
477 static int mdio_read(unsigned int addr, int phy_id, int loc)
479 u_int cmd = (0xf6<<10)|(phy_id<<5)|loc;
483 for (i = 14; i >= 0; i--) {
484 int dat = (cmd&(1<<i)) ? MDIO_DATA_WRITE1 : MDIO_DATA_WRITE0;
486 outb_p(dat | MDIO_SHIFT_CLK, addr);
488 for (i = 19; i > 0; i--) {
489 outb_p(MDIO_ENB_IN, addr);
490 retval = (retval << 1) | ((inb_p(addr) & MDIO_DATA_READ) != 0);
491 outb_p(MDIO_ENB_IN | MDIO_SHIFT_CLK, addr);
493 return (retval>>1) & 0xffff;
496 static void mdio_write(unsigned int addr, int phy_id, int loc, int value)
498 u_int cmd = (0x05<<28)|(phy_id<<23)|(loc<<18)|(1<<17)|value;
502 for (i = 31; i >= 0; i--) {
503 int dat = (cmd&(1<<i)) ? MDIO_DATA_WRITE1 : MDIO_DATA_WRITE0;
505 outb_p(dat | MDIO_SHIFT_CLK, addr);
507 for (i = 1; i >= 0; i--) {
508 outb_p(MDIO_ENB_IN, addr);
509 outb_p(MDIO_ENB_IN | MDIO_SHIFT_CLK, addr);
513 /*====================================================================*/
515 static int axnet_open(struct net_device *dev)
518 axnet_dev_t *info = PRIV(dev);
519 struct pcmcia_device *link = info->p_dev;
520 unsigned int nic_base = dev->base_addr;
522 DEBUG(2, "axnet_open('%s')\n", dev->name);
524 if (!pcmcia_dev_present(link))
527 outb_p(0xFF, nic_base + EN0_ISR); /* Clear bogus intr. */
528 ret = request_irq(dev->irq, ei_irq_wrapper, IRQF_SHARED, "axnet_cs", dev);
534 info->link_status = 0x00;
535 init_timer(&info->watchdog);
536 info->watchdog.function = &ei_watchdog;
537 info->watchdog.data = (u_long)dev;
538 info->watchdog.expires = jiffies + HZ;
539 add_timer(&info->watchdog);
544 /*====================================================================*/
546 static int axnet_close(struct net_device *dev)
548 axnet_dev_t *info = PRIV(dev);
549 struct pcmcia_device *link = info->p_dev;
551 DEBUG(2, "axnet_close('%s')\n", dev->name);
554 free_irq(dev->irq, dev);
557 netif_stop_queue(dev);
558 del_timer_sync(&info->watchdog);
563 /*======================================================================
565 Hard reset the card. This used to pause for the same period that
566 a 8390 reset command required, but that shouldn't be necessary.
568 ======================================================================*/
570 static void axnet_reset_8390(struct net_device *dev)
572 unsigned int nic_base = dev->base_addr;
575 ei_status.txing = ei_status.dmaing = 0;
577 outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, nic_base + E8390_CMD);
579 outb(inb(nic_base + AXNET_RESET), nic_base + AXNET_RESET);
581 for (i = 0; i < 100; i++) {
582 if ((inb_p(nic_base+EN0_ISR) & ENISR_RESET) != 0)
586 outb_p(ENISR_RESET, nic_base + EN0_ISR); /* Ack intr. */
589 printk(KERN_ERR "%s: axnet_reset_8390() did not complete.\n",
592 } /* axnet_reset_8390 */
594 /*====================================================================*/
596 static irqreturn_t ei_irq_wrapper(int irq, void *dev_id)
598 struct net_device *dev = dev_id;
599 PRIV(dev)->stale = 0;
600 return ax_interrupt(irq, dev_id);
603 static void ei_watchdog(u_long arg)
605 struct net_device *dev = (struct net_device *)(arg);
606 axnet_dev_t *info = PRIV(dev);
607 unsigned int nic_base = dev->base_addr;
608 unsigned int mii_addr = nic_base + AXNET_MII_EEP;
611 if (!netif_device_present(dev)) goto reschedule;
613 /* Check for pending interrupt with expired latency timer: with
614 this, we can limp along even if the interrupt is blocked */
615 if (info->stale++ && (inb_p(nic_base + EN0_ISR) & ENISR_ALL)) {
616 if (!info->fast_poll)
617 printk(KERN_INFO "%s: interrupt(s) dropped!\n", dev->name);
618 ei_irq_wrapper(dev->irq, dev);
619 info->fast_poll = HZ;
621 if (info->fast_poll) {
623 info->watchdog.expires = jiffies + 1;
624 add_timer(&info->watchdog);
628 if (info->phy_id < 0)
630 link = mdio_read(mii_addr, info->phy_id, 1);
631 if (!link || (link == 0xffff)) {
632 printk(KERN_INFO "%s: MII is missing!\n", dev->name);
638 if (link != info->link_status) {
639 u_short p = mdio_read(mii_addr, info->phy_id, 5);
640 printk(KERN_INFO "%s: %s link beat\n", dev->name,
641 (link) ? "found" : "lost");
643 info->duplex_flag = (p & 0x0140) ? 0x80 : 0x00;
645 printk(KERN_INFO "%s: autonegotiation complete: "
646 "%sbaseT-%cD selected\n", dev->name,
647 ((p & 0x0180) ? "100" : "10"),
648 ((p & 0x0140) ? 'F' : 'H'));
650 printk(KERN_INFO "%s: link partner did not autonegotiate\n",
652 AX88190_init(dev, 1);
654 info->link_status = link;
658 info->watchdog.expires = jiffies + HZ;
659 add_timer(&info->watchdog);
662 static void netdev_get_drvinfo(struct net_device *dev,
663 struct ethtool_drvinfo *info)
665 strcpy(info->driver, "axnet_cs");
668 static const struct ethtool_ops netdev_ethtool_ops = {
669 .get_drvinfo = netdev_get_drvinfo,
672 /*====================================================================*/
674 static int axnet_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
676 axnet_dev_t *info = PRIV(dev);
677 u16 *data = (u16 *)&rq->ifr_ifru;
678 unsigned int mii_addr = dev->base_addr + AXNET_MII_EEP;
681 data[0] = info->phy_id;
682 case SIOCGMIIREG: /* Read MII PHY register. */
683 data[3] = mdio_read(mii_addr, data[0], data[1] & 0x1f);
685 case SIOCSMIIREG: /* Write MII PHY register. */
686 if (!capable(CAP_NET_ADMIN))
688 mdio_write(mii_addr, data[0], data[1] & 0x1f, data[2]);
694 /*====================================================================*/
696 static void get_8390_hdr(struct net_device *dev,
697 struct e8390_pkt_hdr *hdr,
700 unsigned int nic_base = dev->base_addr;
702 outb_p(0, nic_base + EN0_RSARLO); /* On page boundary */
703 outb_p(ring_page, nic_base + EN0_RSARHI);
704 outb_p(E8390_RREAD+E8390_START, nic_base + AXNET_CMD);
706 insw(nic_base + AXNET_DATAPORT, hdr,
707 sizeof(struct e8390_pkt_hdr)>>1);
708 /* Fix for big endian systems */
709 hdr->count = le16_to_cpu(hdr->count);
713 /*====================================================================*/
715 static void block_input(struct net_device *dev, int count,
716 struct sk_buff *skb, int ring_offset)
718 unsigned int nic_base = dev->base_addr;
719 int xfer_count = count;
720 char *buf = skb->data;
723 if ((ei_debug > 4) && (count != 4))
724 printk(KERN_DEBUG "%s: [bi=%d]\n", dev->name, count+4);
726 outb_p(ring_offset & 0xff, nic_base + EN0_RSARLO);
727 outb_p(ring_offset >> 8, nic_base + EN0_RSARHI);
728 outb_p(E8390_RREAD+E8390_START, nic_base + AXNET_CMD);
730 insw(nic_base + AXNET_DATAPORT,buf,count>>1);
732 buf[count-1] = inb(nic_base + AXNET_DATAPORT), xfer_count++;
736 /*====================================================================*/
738 static void block_output(struct net_device *dev, int count,
739 const u_char *buf, const int start_page)
741 unsigned int nic_base = dev->base_addr;
745 printk(KERN_DEBUG "%s: [bo=%d]\n", dev->name, count);
748 /* Round the count up for word writes. Do we need to do this?
749 What effect will an odd byte count have on the 8390?
750 I should check someday. */
754 outb_p(0x00, nic_base + EN0_RSARLO);
755 outb_p(start_page, nic_base + EN0_RSARHI);
756 outb_p(E8390_RWRITE+E8390_START, nic_base + AXNET_CMD);
757 outsw(nic_base + AXNET_DATAPORT, buf, count>>1);
760 static struct pcmcia_device_id axnet_ids[] = {
761 PCMCIA_PFC_DEVICE_MANF_CARD(0, 0x016c, 0x0081),
762 PCMCIA_DEVICE_MANF_CARD(0x018a, 0x0301),
763 PCMCIA_DEVICE_MANF_CARD(0x026f, 0x0301),
764 PCMCIA_DEVICE_MANF_CARD(0x026f, 0x0303),
765 PCMCIA_DEVICE_MANF_CARD(0x026f, 0x0309),
766 PCMCIA_DEVICE_MANF_CARD(0x0274, 0x1106),
767 PCMCIA_DEVICE_MANF_CARD(0x8a01, 0xc1ab),
768 PCMCIA_DEVICE_MANF_CARD(0x021b, 0x0202),
769 PCMCIA_DEVICE_MANF_CARD(0xffff, 0x1090),
770 PCMCIA_DEVICE_PROD_ID12("AmbiCom,Inc.", "Fast Ethernet PC Card(AMB8110)", 0x49b020a7, 0x119cc9fc),
771 PCMCIA_DEVICE_PROD_ID124("Fast Ethernet", "16-bit PC Card", "AX88190", 0xb4be14e3, 0x9a12eb6a, 0xab9be5ef),
772 PCMCIA_DEVICE_PROD_ID12("ASIX", "AX88190", 0x0959823b, 0xab9be5ef),
773 PCMCIA_DEVICE_PROD_ID12("Billionton", "LNA-100B", 0x552ab682, 0xbc3b87e1),
774 PCMCIA_DEVICE_PROD_ID12("CHEETAH ETHERCARD", "EN2228", 0x00fa7bc8, 0x00e990cc),
775 PCMCIA_DEVICE_PROD_ID12("CNet", "CNF301", 0xbc477dde, 0x78c5f40b),
776 PCMCIA_DEVICE_PROD_ID12("corega K.K.", "corega FEther PCC-TXD", 0x5261440f, 0x436768c5),
777 PCMCIA_DEVICE_PROD_ID12("corega K.K.", "corega FEtherII PCC-TXD", 0x5261440f, 0x730df72e),
778 PCMCIA_DEVICE_PROD_ID12("Dynalink", "L100C16", 0x55632fd5, 0x66bc2a90),
779 PCMCIA_DEVICE_PROD_ID12("IO DATA", "ETXPCM", 0x547e66dc, 0x233adac2),
780 PCMCIA_DEVICE_PROD_ID12("Linksys", "EtherFast 10/100 PC Card (PCMPC100 V3)", 0x0733cc81, 0x232019a8),
781 PCMCIA_DEVICE_PROD_ID12("MELCO", "LPC3-TX", 0x481e0094, 0xf91af609),
782 PCMCIA_DEVICE_PROD_ID12("NETGEAR", "FA411", 0x9aa79dc3, 0x40fad875),
783 PCMCIA_DEVICE_PROD_ID12("PCMCIA", "100BASE", 0x281f1c5d, 0x7c2add04),
784 PCMCIA_DEVICE_PROD_ID12("PCMCIA", "FastEtherCard", 0x281f1c5d, 0x7ef26116),
785 PCMCIA_DEVICE_PROD_ID12("PCMCIA", "FEP501", 0x281f1c5d, 0x2e272058),
786 PCMCIA_DEVICE_PROD_ID14("Network Everywhere", "AX88190", 0x820a67b6, 0xab9be5ef),
789 MODULE_DEVICE_TABLE(pcmcia, axnet_ids);
791 static struct pcmcia_driver axnet_cs_driver = {
792 .owner = THIS_MODULE,
796 .probe = axnet_probe,
797 .remove = axnet_detach,
798 .id_table = axnet_ids,
799 .suspend = axnet_suspend,
800 .resume = axnet_resume,
803 static int __init init_axnet_cs(void)
805 return pcmcia_register_driver(&axnet_cs_driver);
808 static void __exit exit_axnet_cs(void)
810 pcmcia_unregister_driver(&axnet_cs_driver);
813 module_init(init_axnet_cs);
814 module_exit(exit_axnet_cs);
816 /*====================================================================*/
818 /* 8390.c: A general NS8390 ethernet driver core for linux. */
820 Written 1992-94 by Donald Becker.
822 Copyright 1993 United States Government as represented by the
823 Director, National Security Agency.
825 This software may be used and distributed according to the terms
826 of the GNU General Public License, incorporated herein by reference.
828 The author may be reached as becker@scyld.com, or C/O
829 Scyld Computing Corporation
830 410 Severn Ave., Suite 210
833 This is the chip-specific code for many 8390-based ethernet adaptors.
834 This is not a complete driver, it must be combined with board-specific
835 code such as ne.c, wd.c, 3c503.c, etc.
837 Seeing how at least eight drivers use this code, (not counting the
838 PCMCIA ones either) it is easy to break some card by what seems like
839 a simple innocent change. Please contact me or Donald if you think
840 you have found something that needs changing. -- PG
844 Paul Gortmaker : remove set_bit lock, other cleanups.
845 Paul Gortmaker : add ei_get_8390_hdr() so we can pass skb's to
846 ei_block_input() for eth_io_copy_and_sum().
847 Paul Gortmaker : exchange static int ei_pingpong for a #define,
848 also add better Tx error handling.
849 Paul Gortmaker : rewrite Rx overrun handling as per NS specs.
850 Alexey Kuznetsov : use the 8390's six bit hash multicast filter.
851 Paul Gortmaker : tweak ANK's above multicast changes a bit.
852 Paul Gortmaker : update packet statistics for v2.1.x
853 Alan Cox : support arbitary stupid port mappings on the
854 68K Macintosh. Support >16bit I/O spaces
855 Paul Gortmaker : add kmod support for auto-loading of the 8390
856 module by all drivers that require it.
857 Alan Cox : Spinlocking work, added 'BUG_83C690'
858 Paul Gortmaker : Separate out Tx timeout code from Tx path.
861 The National Semiconductor LAN Databook, and the 3Com 3c503 databook.
865 static const char *version_8390 =
866 "8390.c:v1.10cvs 9/23/94 Donald Becker (becker@scyld.com)\n";
868 #include <linux/bitops.h>
870 #include <linux/fcntl.h>
871 #include <linux/in.h>
872 #include <linux/interrupt.h>
874 #include <linux/etherdevice.h>
878 /* These are the operational function interfaces to board-specific
880 void reset_8390(struct net_device *dev)
881 Resets the board associated with DEV, including a hardware reset of
882 the 8390. This is only called when there is a transmit timeout, and
883 it is always followed by 8390_init().
884 void block_output(struct net_device *dev, int count, const unsigned char *buf,
886 Write the COUNT bytes of BUF to the packet buffer at START_PAGE. The
887 "page" value uses the 8390's 256-byte pages.
888 void get_8390_hdr(struct net_device *dev, struct e8390_hdr *hdr, int ring_page)
889 Read the 4 byte, page aligned 8390 header. *If* there is a
890 subsequent read, it will be of the rest of the packet.
891 void block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset)
892 Read COUNT bytes from the packet buffer into the skb data area. Start
893 reading from RING_OFFSET, the address as the 8390 sees it. This will always
894 follow the read of the 8390 header.
896 #define ei_reset_8390 (ei_local->reset_8390)
897 #define ei_block_output (ei_local->block_output)
898 #define ei_block_input (ei_local->block_input)
899 #define ei_get_8390_hdr (ei_local->get_8390_hdr)
901 /* use 0 for production, 1 for verification, >2 for debug */
906 /* Index to functions. */
907 static void ei_tx_intr(struct net_device *dev);
908 static void ei_tx_err(struct net_device *dev);
909 static void ei_tx_timeout(struct net_device *dev);
910 static void ei_receive(struct net_device *dev);
911 static void ei_rx_overrun(struct net_device *dev);
913 /* Routines generic to NS8390-based boards. */
914 static void NS8390_trigger_send(struct net_device *dev, unsigned int length,
916 static void set_multicast_list(struct net_device *dev);
917 static void do_set_multicast_list(struct net_device *dev);
920 * SMP and the 8390 setup.
922 * The 8390 isnt exactly designed to be multithreaded on RX/TX. There is
923 * a page register that controls bank and packet buffer access. We guard
924 * this with ei_local->page_lock. Nobody should assume or set the page other
925 * than zero when the lock is not held. Lock holders must restore page 0
926 * before unlocking. Even pure readers must take the lock to protect in
929 * To make life difficult the chip can also be very slow. We therefore can't
930 * just use spinlocks. For the longer lockups we disable the irq the device
931 * sits on and hold the lock. We must hold the lock because there is a dual
932 * processor case other than interrupts (get stats/set multicast list in
933 * parallel with each other and transmit).
935 * Note: in theory we can just disable the irq on the card _but_ there is
936 * a latency on SMP irq delivery. So we can easily go "disable irq" "sync irqs"
937 * enter lock, take the queued irq. So we waddle instead of flying.
939 * Finally by special arrangement for the purpose of being generally
940 * annoying the transmit function is called bh atomic. That places
941 * restrictions on the user context callers as disable_irq won't save
946 * ax_open - Open/initialize the board.
947 * @dev: network device to initialize
949 * This routine goes all-out, setting everything
950 * up anew at each open, even though many of these registers should only
951 * need to be set once at boot.
953 static int ax_open(struct net_device *dev)
956 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
958 #ifdef HAVE_TX_TIMEOUT
959 /* The card I/O part of the driver (e.g. 3c503) can hook a Tx timeout
960 wrapper that does e.g. media check & then calls ei_tx_timeout. */
961 if (dev->tx_timeout == NULL)
962 dev->tx_timeout = ei_tx_timeout;
963 if (dev->watchdog_timeo <= 0)
964 dev->watchdog_timeo = TX_TIMEOUT;
968 * Grab the page lock so we own the register set, then call
972 spin_lock_irqsave(&ei_local->page_lock, flags);
973 AX88190_init(dev, 1);
974 /* Set the flag before we drop the lock, That way the IRQ arrives
975 after its set and we get no silly warnings */
976 netif_start_queue(dev);
977 spin_unlock_irqrestore(&ei_local->page_lock, flags);
978 ei_local->irqlock = 0;
982 #define dev_lock(dev) (((struct ei_device *)netdev_priv(dev))->page_lock)
985 * ax_close - shut down network device
986 * @dev: network device to close
988 * Opposite of ax_open(). Only used when "ifconfig <devname> down" is done.
990 static int ax_close(struct net_device *dev)
995 * Hold the page lock during close
998 spin_lock_irqsave(&dev_lock(dev), flags);
999 AX88190_init(dev, 0);
1000 spin_unlock_irqrestore(&dev_lock(dev), flags);
1001 netif_stop_queue(dev);
1006 * ei_tx_timeout - handle transmit time out condition
1007 * @dev: network device which has apparently fallen asleep
1009 * Called by kernel when device never acknowledges a transmit has
1010 * completed (or failed) - i.e. never posted a Tx related interrupt.
1013 static void ei_tx_timeout(struct net_device *dev)
1015 long e8390_base = dev->base_addr;
1016 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1017 int txsr, isr, tickssofar = jiffies - dev->trans_start;
1018 unsigned long flags;
1020 dev->stats.tx_errors++;
1022 spin_lock_irqsave(&ei_local->page_lock, flags);
1023 txsr = inb(e8390_base+EN0_TSR);
1024 isr = inb(e8390_base+EN0_ISR);
1025 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1027 printk(KERN_DEBUG "%s: Tx timed out, %s TSR=%#2x, ISR=%#2x, t=%d.\n",
1028 dev->name, (txsr & ENTSR_ABT) ? "excess collisions." :
1029 (isr) ? "lost interrupt?" : "cable problem?", txsr, isr, tickssofar);
1031 if (!isr && !dev->stats.tx_packets)
1033 /* The 8390 probably hasn't gotten on the cable yet. */
1034 ei_local->interface_num ^= 1; /* Try a different xcvr. */
1037 /* Ugly but a reset can be slow, yet must be protected */
1039 spin_lock_irqsave(&ei_local->page_lock, flags);
1041 /* Try to restart the card. Perhaps the user has fixed something. */
1043 AX88190_init(dev, 1);
1045 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1046 netif_wake_queue(dev);
1050 * ei_start_xmit - begin packet transmission
1051 * @skb: packet to be sent
1052 * @dev: network device to which packet is sent
1054 * Sends a packet to an 8390 network device.
1057 static int ei_start_xmit(struct sk_buff *skb, struct net_device *dev)
1059 long e8390_base = dev->base_addr;
1060 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1061 int length, send_length, output_page;
1062 unsigned long flags;
1063 u8 packet[ETH_ZLEN];
1065 netif_stop_queue(dev);
1069 /* Mask interrupts from the ethercard.
1070 SMP: We have to grab the lock here otherwise the IRQ handler
1071 on another CPU can flip window and race the IRQ mask set. We end
1072 up trashing the mcast filter not disabling irqs if we don't lock */
1074 spin_lock_irqsave(&ei_local->page_lock, flags);
1075 outb_p(0x00, e8390_base + EN0_IMR);
1076 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1079 * Slow phase with lock held.
1082 spin_lock_irqsave(&ei_local->page_lock, flags);
1084 ei_local->irqlock = 1;
1086 send_length = max(length, ETH_ZLEN);
1089 * We have two Tx slots available for use. Find the first free
1090 * slot, and then perform some sanity checks. With two Tx bufs,
1091 * you get very close to transmitting back-to-back packets. With
1092 * only one Tx buf, the transmitter sits idle while you reload the
1093 * card, leaving a substantial gap between each transmitted packet.
1096 if (ei_local->tx1 == 0)
1098 output_page = ei_local->tx_start_page;
1099 ei_local->tx1 = send_length;
1100 if (ei_debug && ei_local->tx2 > 0)
1101 printk(KERN_DEBUG "%s: idle transmitter tx2=%d, lasttx=%d, txing=%d.\n",
1102 dev->name, ei_local->tx2, ei_local->lasttx, ei_local->txing);
1104 else if (ei_local->tx2 == 0)
1106 output_page = ei_local->tx_start_page + TX_PAGES/2;
1107 ei_local->tx2 = send_length;
1108 if (ei_debug && ei_local->tx1 > 0)
1109 printk(KERN_DEBUG "%s: idle transmitter, tx1=%d, lasttx=%d, txing=%d.\n",
1110 dev->name, ei_local->tx1, ei_local->lasttx, ei_local->txing);
1113 { /* We should never get here. */
1115 printk(KERN_DEBUG "%s: No Tx buffers free! tx1=%d tx2=%d last=%d\n",
1116 dev->name, ei_local->tx1, ei_local->tx2, ei_local->lasttx);
1117 ei_local->irqlock = 0;
1118 netif_stop_queue(dev);
1119 outb_p(ENISR_ALL, e8390_base + EN0_IMR);
1120 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1121 dev->stats.tx_errors++;
1126 * Okay, now upload the packet and trigger a send if the transmitter
1127 * isn't already sending. If it is busy, the interrupt handler will
1128 * trigger the send later, upon receiving a Tx done interrupt.
1131 if (length == skb->len)
1132 ei_block_output(dev, length, skb->data, output_page);
1134 memset(packet, 0, ETH_ZLEN);
1135 skb_copy_from_linear_data(skb, packet, skb->len);
1136 ei_block_output(dev, length, packet, output_page);
1139 if (! ei_local->txing)
1141 ei_local->txing = 1;
1142 NS8390_trigger_send(dev, send_length, output_page);
1143 dev->trans_start = jiffies;
1144 if (output_page == ei_local->tx_start_page)
1147 ei_local->lasttx = -1;
1152 ei_local->lasttx = -2;
1155 else ei_local->txqueue++;
1157 if (ei_local->tx1 && ei_local->tx2)
1158 netif_stop_queue(dev);
1160 netif_start_queue(dev);
1162 /* Turn 8390 interrupts back on. */
1163 ei_local->irqlock = 0;
1164 outb_p(ENISR_ALL, e8390_base + EN0_IMR);
1166 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1168 dev_kfree_skb (skb);
1169 dev->stats.tx_bytes += send_length;
1175 * ax_interrupt - handle the interrupts from an 8390
1176 * @irq: interrupt number
1177 * @dev_id: a pointer to the net_device
1179 * Handle the ether interface interrupts. We pull packets from
1180 * the 8390 via the card specific functions and fire them at the networking
1181 * stack. We also handle transmit completions and wake the transmit path if
1182 * necessary. We also update the counters and do other housekeeping as
1186 static irqreturn_t ax_interrupt(int irq, void *dev_id)
1188 struct net_device *dev = dev_id;
1190 int interrupts, nr_serviced = 0, i;
1191 struct ei_device *ei_local;
1194 e8390_base = dev->base_addr;
1195 ei_local = netdev_priv(dev);
1198 * Protect the irq test too.
1201 spin_lock(&ei_local->page_lock);
1203 if (ei_local->irqlock)
1205 #if 1 /* This might just be an interrupt for a PCI device sharing this line */
1206 /* The "irqlock" check is only for testing. */
1207 printk(ei_local->irqlock
1208 ? "%s: Interrupted while interrupts are masked! isr=%#2x imr=%#2x.\n"
1209 : "%s: Reentering the interrupt handler! isr=%#2x imr=%#2x.\n",
1210 dev->name, inb_p(e8390_base + EN0_ISR),
1211 inb_p(e8390_base + EN0_IMR));
1213 spin_unlock(&ei_local->page_lock);
1218 printk(KERN_DEBUG "%s: interrupt(isr=%#2.2x).\n", dev->name,
1219 inb_p(e8390_base + EN0_ISR));
1221 outb_p(0x00, e8390_base + EN0_ISR);
1222 ei_local->irqlock = 1;
1224 /* !!Assumption!! -- we stay in page 0. Don't break this. */
1225 while ((interrupts = inb_p(e8390_base + EN0_ISR)) != 0
1226 && ++nr_serviced < MAX_SERVICE)
1228 if (!netif_running(dev) || (interrupts == 0xff)) {
1230 printk(KERN_WARNING "%s: interrupt from stopped card\n", dev->name);
1231 outb_p(interrupts, e8390_base + EN0_ISR);
1237 /* AX88190 bug fix. */
1238 outb_p(interrupts, e8390_base + EN0_ISR);
1239 for (i = 0; i < 10; i++) {
1240 if (!(inb(e8390_base + EN0_ISR) & interrupts))
1242 outb_p(0, e8390_base + EN0_ISR);
1243 outb_p(interrupts, e8390_base + EN0_ISR);
1245 if (interrupts & ENISR_OVER)
1247 else if (interrupts & (ENISR_RX+ENISR_RX_ERR))
1249 /* Got a good (?) packet. */
1252 /* Push the next to-transmit packet through. */
1253 if (interrupts & ENISR_TX)
1255 else if (interrupts & ENISR_TX_ERR)
1258 if (interrupts & ENISR_COUNTERS)
1260 dev->stats.rx_frame_errors += inb_p(e8390_base + EN0_COUNTER0);
1261 dev->stats.rx_crc_errors += inb_p(e8390_base + EN0_COUNTER1);
1262 dev->stats.rx_missed_errors+= inb_p(e8390_base + EN0_COUNTER2);
1266 if (interrupts && ei_debug > 3)
1269 if (nr_serviced >= MAX_SERVICE)
1271 /* 0xFF is valid for a card removal */
1272 if(interrupts!=0xFF)
1273 printk(KERN_WARNING "%s: Too much work at interrupt, status %#2.2x\n",
1274 dev->name, interrupts);
1275 outb_p(ENISR_ALL, e8390_base + EN0_ISR); /* Ack. most intrs. */
1277 printk(KERN_WARNING "%s: unknown interrupt %#2x\n", dev->name, interrupts);
1278 outb_p(0xff, e8390_base + EN0_ISR); /* Ack. all intrs. */
1282 /* Turn 8390 interrupts back on. */
1283 ei_local->irqlock = 0;
1284 outb_p(ENISR_ALL, e8390_base + EN0_IMR);
1286 spin_unlock(&ei_local->page_lock);
1287 return IRQ_RETVAL(handled);
1291 * ei_tx_err - handle transmitter error
1292 * @dev: network device which threw the exception
1294 * A transmitter error has happened. Most likely excess collisions (which
1295 * is a fairly normal condition). If the error is one where the Tx will
1296 * have been aborted, we try and send another one right away, instead of
1297 * letting the failed packet sit and collect dust in the Tx buffer. This
1298 * is a much better solution as it avoids kernel based Tx timeouts, and
1299 * an unnecessary card reset.
1301 * Called with lock held.
1304 static void ei_tx_err(struct net_device *dev)
1306 long e8390_base = dev->base_addr;
1307 unsigned char txsr = inb_p(e8390_base+EN0_TSR);
1308 unsigned char tx_was_aborted = txsr & (ENTSR_ABT+ENTSR_FU);
1310 #ifdef VERBOSE_ERROR_DUMP
1311 printk(KERN_DEBUG "%s: transmitter error (%#2x): ", dev->name, txsr);
1312 if (txsr & ENTSR_ABT)
1313 printk("excess-collisions ");
1314 if (txsr & ENTSR_ND)
1315 printk("non-deferral ");
1316 if (txsr & ENTSR_CRS)
1317 printk("lost-carrier ");
1318 if (txsr & ENTSR_FU)
1319 printk("FIFO-underrun ");
1320 if (txsr & ENTSR_CDH)
1321 printk("lost-heartbeat ");
1329 dev->stats.tx_errors++;
1330 if (txsr & ENTSR_CRS) dev->stats.tx_carrier_errors++;
1331 if (txsr & ENTSR_CDH) dev->stats.tx_heartbeat_errors++;
1332 if (txsr & ENTSR_OWC) dev->stats.tx_window_errors++;
1337 * ei_tx_intr - transmit interrupt handler
1338 * @dev: network device for which tx intr is handled
1340 * We have finished a transmit: check for errors and then trigger the next
1341 * packet to be sent. Called with lock held.
1344 static void ei_tx_intr(struct net_device *dev)
1346 long e8390_base = dev->base_addr;
1347 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1348 int status = inb(e8390_base + EN0_TSR);
1351 * There are two Tx buffers, see which one finished, and trigger
1352 * the send of another one if it exists.
1354 ei_local->txqueue--;
1356 if (ei_local->tx1 < 0)
1358 if (ei_local->lasttx != 1 && ei_local->lasttx != -1)
1359 printk(KERN_ERR "%s: bogus last_tx_buffer %d, tx1=%d.\n",
1360 ei_local->name, ei_local->lasttx, ei_local->tx1);
1362 if (ei_local->tx2 > 0)
1364 ei_local->txing = 1;
1365 NS8390_trigger_send(dev, ei_local->tx2, ei_local->tx_start_page + 6);
1366 dev->trans_start = jiffies;
1368 ei_local->lasttx = 2;
1370 else ei_local->lasttx = 20, ei_local->txing = 0;
1372 else if (ei_local->tx2 < 0)
1374 if (ei_local->lasttx != 2 && ei_local->lasttx != -2)
1375 printk("%s: bogus last_tx_buffer %d, tx2=%d.\n",
1376 ei_local->name, ei_local->lasttx, ei_local->tx2);
1378 if (ei_local->tx1 > 0)
1380 ei_local->txing = 1;
1381 NS8390_trigger_send(dev, ei_local->tx1, ei_local->tx_start_page);
1382 dev->trans_start = jiffies;
1384 ei_local->lasttx = 1;
1387 ei_local->lasttx = 10, ei_local->txing = 0;
1389 // else printk(KERN_WARNING "%s: unexpected TX-done interrupt, lasttx=%d.\n",
1390 // dev->name, ei_local->lasttx);
1392 /* Minimize Tx latency: update the statistics after we restart TXing. */
1393 if (status & ENTSR_COL)
1394 dev->stats.collisions++;
1395 if (status & ENTSR_PTX)
1396 dev->stats.tx_packets++;
1399 dev->stats.tx_errors++;
1400 if (status & ENTSR_ABT)
1402 dev->stats.tx_aborted_errors++;
1403 dev->stats.collisions += 16;
1405 if (status & ENTSR_CRS)
1406 dev->stats.tx_carrier_errors++;
1407 if (status & ENTSR_FU)
1408 dev->stats.tx_fifo_errors++;
1409 if (status & ENTSR_CDH)
1410 dev->stats.tx_heartbeat_errors++;
1411 if (status & ENTSR_OWC)
1412 dev->stats.tx_window_errors++;
1414 netif_wake_queue(dev);
1418 * ei_receive - receive some packets
1419 * @dev: network device with which receive will be run
1421 * We have a good packet(s), get it/them out of the buffers.
1422 * Called with lock held.
1425 static void ei_receive(struct net_device *dev)
1427 long e8390_base = dev->base_addr;
1428 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1429 unsigned char rxing_page, this_frame, next_frame;
1430 unsigned short current_offset;
1431 int rx_pkt_count = 0;
1432 struct e8390_pkt_hdr rx_frame;
1434 while (++rx_pkt_count < 10)
1436 int pkt_len, pkt_stat;
1438 /* Get the rx page (incoming packet pointer). */
1439 rxing_page = inb_p(e8390_base + EN1_CURPAG -1);
1441 /* Remove one frame from the ring. Boundary is always a page behind. */
1442 this_frame = inb_p(e8390_base + EN0_BOUNDARY) + 1;
1443 if (this_frame >= ei_local->stop_page)
1444 this_frame = ei_local->rx_start_page;
1446 /* Someday we'll omit the previous, iff we never get this message.
1447 (There is at least one clone claimed to have a problem.)
1449 Keep quiet if it looks like a card removal. One problem here
1450 is that some clones crash in roughly the same way.
1452 if (ei_debug > 0 && this_frame != ei_local->current_page && (this_frame!=0x0 || rxing_page!=0xFF))
1453 printk(KERN_ERR "%s: mismatched read page pointers %2x vs %2x.\n",
1454 dev->name, this_frame, ei_local->current_page);
1456 if (this_frame == rxing_page) /* Read all the frames? */
1457 break; /* Done for now */
1459 current_offset = this_frame << 8;
1460 ei_get_8390_hdr(dev, &rx_frame, this_frame);
1462 pkt_len = rx_frame.count - sizeof(struct e8390_pkt_hdr);
1463 pkt_stat = rx_frame.status;
1465 next_frame = this_frame + 1 + ((pkt_len+4)>>8);
1467 if (pkt_len < 60 || pkt_len > 1518)
1470 printk(KERN_DEBUG "%s: bogus packet size: %d, status=%#2x nxpg=%#2x.\n",
1471 dev->name, rx_frame.count, rx_frame.status,
1473 dev->stats.rx_errors++;
1474 dev->stats.rx_length_errors++;
1476 else if ((pkt_stat & 0x0F) == ENRSR_RXOK)
1478 struct sk_buff *skb;
1480 skb = dev_alloc_skb(pkt_len+2);
1484 printk(KERN_DEBUG "%s: Couldn't allocate a sk_buff of size %d.\n",
1485 dev->name, pkt_len);
1486 dev->stats.rx_dropped++;
1491 skb_reserve(skb,2); /* IP headers on 16 byte boundaries */
1492 skb_put(skb, pkt_len); /* Make room */
1493 ei_block_input(dev, pkt_len, skb, current_offset + sizeof(rx_frame));
1494 skb->protocol=eth_type_trans(skb,dev);
1496 dev->last_rx = jiffies;
1497 dev->stats.rx_packets++;
1498 dev->stats.rx_bytes += pkt_len;
1499 if (pkt_stat & ENRSR_PHY)
1500 dev->stats.multicast++;
1506 printk(KERN_DEBUG "%s: bogus packet: status=%#2x nxpg=%#2x size=%d\n",
1507 dev->name, rx_frame.status, rx_frame.next,
1509 dev->stats.rx_errors++;
1510 /* NB: The NIC counts CRC, frame and missed errors. */
1511 if (pkt_stat & ENRSR_FO)
1512 dev->stats.rx_fifo_errors++;
1514 next_frame = rx_frame.next;
1516 /* This _should_ never happen: it's here for avoiding bad clones. */
1517 if (next_frame >= ei_local->stop_page) {
1518 printk("%s: next frame inconsistency, %#2x\n", dev->name,
1520 next_frame = ei_local->rx_start_page;
1522 ei_local->current_page = next_frame;
1523 outb_p(next_frame-1, e8390_base+EN0_BOUNDARY);
1530 * ei_rx_overrun - handle receiver overrun
1531 * @dev: network device which threw exception
1533 * We have a receiver overrun: we have to kick the 8390 to get it started
1534 * again. Problem is that you have to kick it exactly as NS prescribes in
1535 * the updated datasheets, or "the NIC may act in an unpredictable manner."
1536 * This includes causing "the NIC to defer indefinitely when it is stopped
1537 * on a busy network." Ugh.
1538 * Called with lock held. Don't call this with the interrupts off or your
1539 * computer will hate you - it takes 10ms or so.
1542 static void ei_rx_overrun(struct net_device *dev)
1544 axnet_dev_t *info = PRIV(dev);
1545 long e8390_base = dev->base_addr;
1546 unsigned char was_txing, must_resend = 0;
1549 * Record whether a Tx was in progress and then issue the
1552 was_txing = inb_p(e8390_base+E8390_CMD) & E8390_TRANS;
1553 outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD);
1556 printk(KERN_DEBUG "%s: Receiver overrun.\n", dev->name);
1557 dev->stats.rx_over_errors++;
1560 * Wait a full Tx time (1.2ms) + some guard time, NS says 1.6ms total.
1561 * Early datasheets said to poll the reset bit, but now they say that
1562 * it "is not a reliable indicator and subsequently should be ignored."
1563 * We wait at least 10ms.
1569 * Reset RBCR[01] back to zero as per magic incantation.
1571 outb_p(0x00, e8390_base+EN0_RCNTLO);
1572 outb_p(0x00, e8390_base+EN0_RCNTHI);
1575 * See if any Tx was interrupted or not. According to NS, this
1576 * step is vital, and skipping it will cause no end of havoc.
1581 unsigned char tx_completed = inb_p(e8390_base+EN0_ISR) & (ENISR_TX+ENISR_TX_ERR);
1587 * Have to enter loopback mode and then restart the NIC before
1588 * you are allowed to slurp packets up off the ring.
1590 outb_p(E8390_TXOFF, e8390_base + EN0_TXCR);
1591 outb_p(E8390_NODMA + E8390_PAGE0 + E8390_START, e8390_base + E8390_CMD);
1594 * Clear the Rx ring of all the debris, and ack the interrupt.
1599 * Leave loopback mode, and resend any packet that got stopped.
1601 outb_p(E8390_TXCONFIG | info->duplex_flag, e8390_base + EN0_TXCR);
1603 outb_p(E8390_NODMA + E8390_PAGE0 + E8390_START + E8390_TRANS, e8390_base + E8390_CMD);
1607 * Collect the stats. This is called unlocked and from several contexts.
1610 static struct net_device_stats *get_stats(struct net_device *dev)
1612 long ioaddr = dev->base_addr;
1613 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1614 unsigned long flags;
1616 /* If the card is stopped, just return the present stats. */
1617 if (!netif_running(dev))
1620 spin_lock_irqsave(&ei_local->page_lock,flags);
1621 /* Read the counter registers, assuming we are in page 0. */
1622 dev->stats.rx_frame_errors += inb_p(ioaddr + EN0_COUNTER0);
1623 dev->stats.rx_crc_errors += inb_p(ioaddr + EN0_COUNTER1);
1624 dev->stats.rx_missed_errors+= inb_p(ioaddr + EN0_COUNTER2);
1625 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1631 * Form the 64 bit 8390 multicast table from the linked list of addresses
1632 * associated with this dev structure.
1635 static inline void make_mc_bits(u8 *bits, struct net_device *dev)
1637 struct dev_mc_list *dmi;
1640 for (dmi=dev->mc_list; dmi; dmi=dmi->next) {
1642 crc = ether_crc(ETH_ALEN, dmi->dmi_addr);
1644 * The 8390 uses the 6 most significant bits of the
1645 * CRC to index the multicast table.
1647 bits[crc>>29] |= (1<<((crc>>26)&7));
1652 * do_set_multicast_list - set/clear multicast filter
1653 * @dev: net device for which multicast filter is adjusted
1655 * Set or clear the multicast filter for this adaptor.
1656 * Must be called with lock held.
1659 static void do_set_multicast_list(struct net_device *dev)
1661 long e8390_base = dev->base_addr;
1663 struct ei_device *ei_local = (struct ei_device*)netdev_priv(dev);
1665 if (!(dev->flags&(IFF_PROMISC|IFF_ALLMULTI))) {
1666 memset(ei_local->mcfilter, 0, 8);
1668 make_mc_bits(ei_local->mcfilter, dev);
1670 /* set to accept-all */
1671 memset(ei_local->mcfilter, 0xFF, 8);
1674 outb_p(E8390_NODMA + E8390_PAGE1, e8390_base + E8390_CMD);
1675 for(i = 0; i < 8; i++)
1677 outb_p(ei_local->mcfilter[i], e8390_base + EN1_MULT_SHIFT(i));
1679 outb_p(E8390_NODMA + E8390_PAGE0, e8390_base + E8390_CMD);
1681 if(dev->flags&IFF_PROMISC)
1682 outb_p(E8390_RXCONFIG | 0x58, e8390_base + EN0_RXCR);
1683 else if(dev->flags&IFF_ALLMULTI || dev->mc_list)
1684 outb_p(E8390_RXCONFIG | 0x48, e8390_base + EN0_RXCR);
1686 outb_p(E8390_RXCONFIG | 0x40, e8390_base + EN0_RXCR);
1688 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, e8390_base+E8390_CMD);
1692 * Called without lock held. This is invoked from user context and may
1693 * be parallel to just about everything else. Its also fairly quick and
1694 * not called too often. Must protect against both bh and irq users
1697 static void set_multicast_list(struct net_device *dev)
1699 unsigned long flags;
1701 spin_lock_irqsave(&dev_lock(dev), flags);
1702 do_set_multicast_list(dev);
1703 spin_unlock_irqrestore(&dev_lock(dev), flags);
1707 * axdev_setup - init rest of 8390 device struct
1708 * @dev: network device structure to init
1710 * Initialize the rest of the 8390 device structure. Do NOT __init
1711 * this, as it is used by 8390 based modular drivers too.
1714 static void axdev_setup(struct net_device *dev)
1716 struct ei_device *ei_local;
1718 printk(version_8390);
1720 ei_local = (struct ei_device *)netdev_priv(dev);
1721 spin_lock_init(&ei_local->page_lock);
1723 dev->hard_start_xmit = &ei_start_xmit;
1724 dev->get_stats = get_stats;
1725 dev->set_multicast_list = &set_multicast_list;
1730 /* This page of functions should be 8390 generic */
1731 /* Follow National Semi's recommendations for initializing the "NIC". */
1734 * AX88190_init - initialize 8390 hardware
1735 * @dev: network device to initialize
1736 * @startp: boolean. non-zero value to initiate chip processing
1738 * Must be called with lock held.
1741 static void AX88190_init(struct net_device *dev, int startp)
1743 axnet_dev_t *info = PRIV(dev);
1744 long e8390_base = dev->base_addr;
1745 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1747 int endcfg = ei_local->word16 ? (0x48 | ENDCFG_WTS) : 0x48;
1749 if(sizeof(struct e8390_pkt_hdr)!=4)
1750 panic("8390.c: header struct mispacked\n");
1751 /* Follow National Semi's recommendations for initing the DP83902. */
1752 outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD); /* 0x21 */
1753 outb_p(endcfg, e8390_base + EN0_DCFG); /* 0x48 or 0x49 */
1754 /* Clear the remote byte count registers. */
1755 outb_p(0x00, e8390_base + EN0_RCNTLO);
1756 outb_p(0x00, e8390_base + EN0_RCNTHI);
1757 /* Set to monitor and loopback mode -- this is vital!. */
1758 outb_p(E8390_RXOFF|0x40, e8390_base + EN0_RXCR); /* 0x60 */
1759 outb_p(E8390_TXOFF, e8390_base + EN0_TXCR); /* 0x02 */
1760 /* Set the transmit page and receive ring. */
1761 outb_p(ei_local->tx_start_page, e8390_base + EN0_TPSR);
1762 ei_local->tx1 = ei_local->tx2 = 0;
1763 outb_p(ei_local->rx_start_page, e8390_base + EN0_STARTPG);
1764 outb_p(ei_local->stop_page-1, e8390_base + EN0_BOUNDARY); /* 3c503 says 0x3f,NS0x26*/
1765 ei_local->current_page = ei_local->rx_start_page; /* assert boundary+1 */
1766 outb_p(ei_local->stop_page, e8390_base + EN0_STOPPG);
1767 /* Clear the pending interrupts and mask. */
1768 outb_p(0xFF, e8390_base + EN0_ISR);
1769 outb_p(0x00, e8390_base + EN0_IMR);
1771 /* Copy the station address into the DS8390 registers. */
1773 outb_p(E8390_NODMA + E8390_PAGE1 + E8390_STOP, e8390_base+E8390_CMD); /* 0x61 */
1774 for(i = 0; i < 6; i++)
1776 outb_p(dev->dev_addr[i], e8390_base + EN1_PHYS_SHIFT(i));
1777 if(inb_p(e8390_base + EN1_PHYS_SHIFT(i))!=dev->dev_addr[i])
1778 printk(KERN_ERR "Hw. address read/write mismap %d\n",i);
1781 outb_p(ei_local->rx_start_page, e8390_base + EN1_CURPAG);
1782 outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD);
1784 netif_start_queue(dev);
1785 ei_local->tx1 = ei_local->tx2 = 0;
1786 ei_local->txing = 0;
1790 outb_p(0xff, e8390_base + EN0_ISR);
1791 outb_p(ENISR_ALL, e8390_base + EN0_IMR);
1792 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, e8390_base+E8390_CMD);
1793 outb_p(E8390_TXCONFIG | info->duplex_flag,
1794 e8390_base + EN0_TXCR); /* xmit on. */
1795 /* 3c503 TechMan says rxconfig only after the NIC is started. */
1796 outb_p(E8390_RXCONFIG | 0x40, e8390_base + EN0_RXCR); /* rx on, */
1797 do_set_multicast_list(dev); /* (re)load the mcast table */
1801 /* Trigger a transmit start, assuming the length is valid.
1802 Always called with the page lock held */
1804 static void NS8390_trigger_send(struct net_device *dev, unsigned int length,
1807 long e8390_base = dev->base_addr;
1808 struct ei_device *ei_local __attribute((unused)) = (struct ei_device *) netdev_priv(dev);
1810 if (inb_p(e8390_base) & E8390_TRANS)
1812 printk(KERN_WARNING "%s: trigger_send() called with the transmitter busy.\n",
1816 outb_p(length & 0xff, e8390_base + EN0_TCNTLO);
1817 outb_p(length >> 8, e8390_base + EN0_TCNTHI);
1818 outb_p(start_page, e8390_base + EN0_TPSR);
1819 outb_p(E8390_NODMA+E8390_TRANS+E8390_START, e8390_base+E8390_CMD);