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 void axnet_config(dev_link_t *link);
90 static void axnet_release(dev_link_t *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 struct ethtool_ops netdev_ethtool_ops;
95 static irqreturn_t ei_irq_wrapper(int irq, void *dev_id, struct pt_regs *regs);
96 static void ei_watchdog(u_long arg);
97 static void axnet_reset_8390(struct net_device *dev);
99 static int mdio_read(kio_addr_t addr, int phy_id, int loc);
100 static void mdio_write(kio_addr_t addr, int phy_id, int loc, int value);
102 static void get_8390_hdr(struct net_device *,
103 struct e8390_pkt_hdr *, int);
104 static void block_input(struct net_device *dev, int count,
105 struct sk_buff *skb, int ring_offset);
106 static void block_output(struct net_device *dev, int count,
107 const u_char *buf, const int start_page);
109 static void axnet_detach(struct pcmcia_device *p_dev);
111 static void axdev_setup(struct net_device *dev);
112 static void AX88190_init(struct net_device *dev, int startp);
113 static int ax_open(struct net_device *dev);
114 static int ax_close(struct net_device *dev);
115 static irqreturn_t ax_interrupt(int irq, void *dev_id, struct pt_regs *regs);
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_attach(struct pcmcia_device *p_dev)
148 struct net_device *dev;
149 dev_link_t *link = dev_to_instance(p_dev);
151 DEBUG(0, "axnet_attach()\n");
153 dev = alloc_netdev(sizeof(struct ei_device) + sizeof(axnet_dev_t),
154 "eth%d", axdev_setup);
162 link->irq.Attributes = IRQ_TYPE_EXCLUSIVE;
163 link->irq.IRQInfo1 = IRQ_LEVEL_ID;
164 link->conf.Attributes = CONF_ENABLE_IRQ;
165 link->conf.IntType = INT_MEMORY_AND_IO;
167 dev->open = &axnet_open;
168 dev->stop = &axnet_close;
169 dev->do_ioctl = &axnet_ioctl;
170 SET_ETHTOOL_OPS(dev, &netdev_ethtool_ops);
172 link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
178 /*======================================================================
180 This deletes a driver "instance". The device is de-registered
181 with Card Services. If it has been released, all local data
182 structures are freed. Otherwise, the structures will be freed
183 when the device is released.
185 ======================================================================*/
187 static void axnet_detach(struct pcmcia_device *p_dev)
189 dev_link_t *link = dev_to_instance(p_dev);
190 struct net_device *dev = link->priv;
192 DEBUG(0, "axnet_detach(0x%p)\n", link);
195 unregister_netdev(dev);
197 if (link->state & DEV_CONFIG)
203 /*======================================================================
205 This probes for a card's hardware address by reading the PROM.
207 ======================================================================*/
209 static int get_prom(dev_link_t *link)
211 struct net_device *dev = link->priv;
212 kio_addr_t ioaddr = dev->base_addr;
215 /* This is based on drivers/net/ne.c */
217 u_char value, offset;
219 {E8390_NODMA+E8390_PAGE0+E8390_STOP, E8390_CMD}, /* Select page 0*/
220 {0x01, EN0_DCFG}, /* Set word-wide access. */
221 {0x00, EN0_RCNTLO}, /* Clear the count regs. */
223 {0x00, EN0_IMR}, /* Mask completion irq. */
225 {E8390_RXOFF|0x40, EN0_RXCR}, /* 0x60 Set to monitor */
226 {E8390_TXOFF, EN0_TXCR}, /* 0x02 and loopback mode. */
229 {0x00, EN0_RSARLO}, /* DMA starting at 0x0400. */
231 {E8390_RREAD+E8390_START, E8390_CMD},
234 /* Not much of a test, but the alternatives are messy */
235 if (link->conf.ConfigBase != 0x03c0)
238 axnet_reset_8390(dev);
241 for (i = 0; i < sizeof(program_seq)/sizeof(program_seq[0]); i++)
242 outb_p(program_seq[i].value, ioaddr + program_seq[i].offset);
244 for (i = 0; i < 6; i += 2) {
245 j = inw(ioaddr + AXNET_DATAPORT);
246 dev->dev_addr[i] = j & 0xff;
247 dev->dev_addr[i+1] = j >> 8;
252 /*======================================================================
254 axnet_config() is scheduled to run after a CARD_INSERTION event
255 is received, to configure the PCMCIA socket, and to make the
256 ethernet device available to the system.
258 ======================================================================*/
260 #define CS_CHECK(fn, ret) \
261 do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
263 static int try_io_port(dev_link_t *link)
266 if (link->io.NumPorts1 == 32) {
267 link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;
268 if (link->io.NumPorts2 > 0) {
269 /* for master/slave multifunction cards */
270 link->io.Attributes2 = IO_DATA_PATH_WIDTH_8;
271 link->irq.Attributes =
272 IRQ_TYPE_DYNAMIC_SHARING|IRQ_FIRST_SHARED;
275 /* This should be two 16-port windows */
276 link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
277 link->io.Attributes2 = IO_DATA_PATH_WIDTH_16;
279 if (link->io.BasePort1 == 0) {
280 link->io.IOAddrLines = 16;
281 for (j = 0; j < 0x400; j += 0x20) {
282 link->io.BasePort1 = j ^ 0x300;
283 link->io.BasePort2 = (j ^ 0x300) + 0x10;
284 ret = pcmcia_request_io(link->handle, &link->io);
285 if (ret == CS_SUCCESS) return ret;
289 return pcmcia_request_io(link->handle, &link->io);
293 static void axnet_config(dev_link_t *link)
295 client_handle_t handle = link->handle;
296 struct net_device *dev = link->priv;
297 axnet_dev_t *info = PRIV(dev);
300 int i, j, last_ret, last_fn;
303 DEBUG(0, "axnet_config(0x%p)\n", link);
305 tuple.Attributes = 0;
306 tuple.TupleData = (cisdata_t *)buf;
307 tuple.TupleDataMax = sizeof(buf);
308 tuple.TupleOffset = 0;
309 tuple.DesiredTuple = CISTPL_CONFIG;
310 CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
311 CS_CHECK(GetTupleData, pcmcia_get_tuple_data(handle, &tuple));
312 CS_CHECK(ParseTuple, pcmcia_parse_tuple(handle, &tuple, &parse));
313 link->conf.ConfigBase = parse.config.base;
314 /* don't trust the CIS on this; Linksys got it wrong */
315 link->conf.Present = 0x63;
318 link->state |= DEV_CONFIG;
320 tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
321 tuple.Attributes = 0;
322 CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
323 while (last_ret == CS_SUCCESS) {
324 cistpl_cftable_entry_t *cfg = &(parse.cftable_entry);
325 cistpl_io_t *io = &(parse.cftable_entry.io);
327 if (pcmcia_get_tuple_data(handle, &tuple) != 0 ||
328 pcmcia_parse_tuple(handle, &tuple, &parse) != 0 ||
329 cfg->index == 0 || cfg->io.nwin == 0)
332 link->conf.ConfigIndex = 0x05;
333 /* For multifunction cards, by convention, we configure the
334 network function with window 0, and serial with window 1 */
336 i = (io->win[1].len > io->win[0].len);
337 link->io.BasePort2 = io->win[1-i].base;
338 link->io.NumPorts2 = io->win[1-i].len;
340 i = link->io.NumPorts2 = 0;
342 link->io.BasePort1 = io->win[i].base;
343 link->io.NumPorts1 = io->win[i].len;
344 link->io.IOAddrLines = io->flags & CISTPL_IO_LINES_MASK;
345 if (link->io.NumPorts1 + link->io.NumPorts2 >= 32) {
346 last_ret = try_io_port(link);
347 if (last_ret == CS_SUCCESS) break;
350 last_ret = pcmcia_get_next_tuple(handle, &tuple);
352 if (last_ret != CS_SUCCESS) {
353 cs_error(handle, RequestIO, last_ret);
357 CS_CHECK(RequestIRQ, pcmcia_request_irq(handle, &link->irq));
359 if (link->io.NumPorts2 == 8) {
360 link->conf.Attributes |= CONF_ENABLE_SPKR;
361 link->conf.Status = CCSR_AUDIO_ENA;
364 CS_CHECK(RequestConfiguration, pcmcia_request_configuration(handle, &link->conf));
365 dev->irq = link->irq.AssignedIRQ;
366 dev->base_addr = link->io.BasePort1;
368 if (!get_prom(link)) {
369 printk(KERN_NOTICE "axnet_cs: this is not an AX88190 card!\n");
370 printk(KERN_NOTICE "axnet_cs: use pcnet_cs instead.\n");
374 ei_status.name = "AX88190";
375 ei_status.word16 = 1;
376 ei_status.tx_start_page = AXNET_START_PG;
377 ei_status.rx_start_page = AXNET_START_PG + TX_PAGES;
378 ei_status.stop_page = AXNET_STOP_PG;
379 ei_status.reset_8390 = &axnet_reset_8390;
380 ei_status.get_8390_hdr = &get_8390_hdr;
381 ei_status.block_input = &block_input;
382 ei_status.block_output = &block_output;
384 if (inb(dev->base_addr + AXNET_TEST) != 0)
385 info->flags |= IS_AX88790;
387 info->flags |= IS_AX88190;
389 if (info->flags & IS_AX88790)
390 outb(0x10, dev->base_addr + AXNET_GPIO); /* select Internal PHY */
392 for (i = 0; i < 32; i++) {
393 j = mdio_read(dev->base_addr + AXNET_MII_EEP, i, 1);
394 if ((j != 0) && (j != 0xffff)) break;
397 /* Maybe PHY is in power down mode. (PPD_SET = 1)
398 Bit 2 of CCSR is active low. */
400 conf_reg_t reg = { 0, CS_WRITE, CISREG_CCSR, 0x04 };
401 pcmcia_access_configuration_register(link->handle, ®);
402 for (i = 0; i < 32; i++) {
403 j = mdio_read(dev->base_addr + AXNET_MII_EEP, i, 1);
404 if ((j != 0) && (j != 0xffff)) break;
408 info->phy_id = (i < 32) ? i : -1;
409 link->dev_node = &info->node;
410 link->state &= ~DEV_CONFIG_PENDING;
411 SET_NETDEV_DEV(dev, &handle_to_dev(handle));
413 if (register_netdev(dev) != 0) {
414 printk(KERN_NOTICE "axnet_cs: register_netdev() failed\n");
415 link->dev_node = NULL;
419 strcpy(info->node.dev_name, dev->name);
421 printk(KERN_INFO "%s: Asix AX88%d90: io %#3lx, irq %d, hw_addr ",
422 dev->name, ((info->flags & IS_AX88790) ? 7 : 1),
423 dev->base_addr, dev->irq);
424 for (i = 0; i < 6; i++)
425 printk("%02X%s", dev->dev_addr[i], ((i<5) ? ":" : "\n"));
426 if (info->phy_id != -1) {
427 DEBUG(0, " MII transceiver at index %d, status %x.\n", info->phy_id, j);
429 printk(KERN_NOTICE " No MII transceivers found!\n");
434 cs_error(link->handle, last_fn, last_ret);
437 link->state &= ~DEV_CONFIG_PENDING;
441 /*======================================================================
443 After a card is removed, axnet_release() will unregister the net
444 device, and release the PCMCIA configuration. If the device is
445 still open, this will be postponed until it is closed.
447 ======================================================================*/
449 static void axnet_release(dev_link_t *link)
451 pcmcia_disable_device(link->handle);
454 static int axnet_suspend(struct pcmcia_device *p_dev)
456 dev_link_t *link = dev_to_instance(p_dev);
457 struct net_device *dev = link->priv;
459 if ((link->state & DEV_CONFIG) && (link->open))
460 netif_device_detach(dev);
465 static int axnet_resume(struct pcmcia_device *p_dev)
467 dev_link_t *link = dev_to_instance(p_dev);
468 struct net_device *dev = link->priv;
470 if ((link->state & DEV_CONFIG) && (link->open)) {
471 axnet_reset_8390(dev);
472 AX88190_init(dev, 1);
473 netif_device_attach(dev);
480 /*======================================================================
482 MII interface support
484 ======================================================================*/
486 #define MDIO_SHIFT_CLK 0x01
487 #define MDIO_DATA_WRITE0 0x00
488 #define MDIO_DATA_WRITE1 0x08
489 #define MDIO_DATA_READ 0x04
490 #define MDIO_MASK 0x0f
491 #define MDIO_ENB_IN 0x02
493 static void mdio_sync(kio_addr_t addr)
496 for (bits = 0; bits < 32; bits++) {
497 outb_p(MDIO_DATA_WRITE1, addr);
498 outb_p(MDIO_DATA_WRITE1 | MDIO_SHIFT_CLK, addr);
502 static int mdio_read(kio_addr_t addr, int phy_id, int loc)
504 u_int cmd = (0xf6<<10)|(phy_id<<5)|loc;
508 for (i = 14; i >= 0; i--) {
509 int dat = (cmd&(1<<i)) ? MDIO_DATA_WRITE1 : MDIO_DATA_WRITE0;
511 outb_p(dat | MDIO_SHIFT_CLK, addr);
513 for (i = 19; i > 0; i--) {
514 outb_p(MDIO_ENB_IN, addr);
515 retval = (retval << 1) | ((inb_p(addr) & MDIO_DATA_READ) != 0);
516 outb_p(MDIO_ENB_IN | MDIO_SHIFT_CLK, addr);
518 return (retval>>1) & 0xffff;
521 static void mdio_write(kio_addr_t addr, int phy_id, int loc, int value)
523 u_int cmd = (0x05<<28)|(phy_id<<23)|(loc<<18)|(1<<17)|value;
527 for (i = 31; i >= 0; i--) {
528 int dat = (cmd&(1<<i)) ? MDIO_DATA_WRITE1 : MDIO_DATA_WRITE0;
530 outb_p(dat | MDIO_SHIFT_CLK, addr);
532 for (i = 1; i >= 0; i--) {
533 outb_p(MDIO_ENB_IN, addr);
534 outb_p(MDIO_ENB_IN | MDIO_SHIFT_CLK, addr);
538 /*====================================================================*/
540 static int axnet_open(struct net_device *dev)
542 axnet_dev_t *info = PRIV(dev);
543 dev_link_t *link = info->p_dev;
545 DEBUG(2, "axnet_open('%s')\n", dev->name);
552 request_irq(dev->irq, ei_irq_wrapper, SA_SHIRQ, "axnet_cs", dev);
554 info->link_status = 0x00;
555 init_timer(&info->watchdog);
556 info->watchdog.function = &ei_watchdog;
557 info->watchdog.data = (u_long)dev;
558 info->watchdog.expires = jiffies + HZ;
559 add_timer(&info->watchdog);
564 /*====================================================================*/
566 static int axnet_close(struct net_device *dev)
568 axnet_dev_t *info = PRIV(dev);
569 dev_link_t *link = info->p_dev;
571 DEBUG(2, "axnet_close('%s')\n", dev->name);
574 free_irq(dev->irq, dev);
577 netif_stop_queue(dev);
578 del_timer_sync(&info->watchdog);
583 /*======================================================================
585 Hard reset the card. This used to pause for the same period that
586 a 8390 reset command required, but that shouldn't be necessary.
588 ======================================================================*/
590 static void axnet_reset_8390(struct net_device *dev)
592 kio_addr_t nic_base = dev->base_addr;
595 ei_status.txing = ei_status.dmaing = 0;
597 outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, nic_base + E8390_CMD);
599 outb(inb(nic_base + AXNET_RESET), nic_base + AXNET_RESET);
601 for (i = 0; i < 100; i++) {
602 if ((inb_p(nic_base+EN0_ISR) & ENISR_RESET) != 0)
606 outb_p(ENISR_RESET, nic_base + EN0_ISR); /* Ack intr. */
609 printk(KERN_ERR "%s: axnet_reset_8390() did not complete.\n",
612 } /* axnet_reset_8390 */
614 /*====================================================================*/
616 static irqreturn_t ei_irq_wrapper(int irq, void *dev_id, struct pt_regs *regs)
618 struct net_device *dev = dev_id;
619 PRIV(dev)->stale = 0;
620 return ax_interrupt(irq, dev_id, regs);
623 static void ei_watchdog(u_long arg)
625 struct net_device *dev = (struct net_device *)(arg);
626 axnet_dev_t *info = PRIV(dev);
627 kio_addr_t nic_base = dev->base_addr;
628 kio_addr_t mii_addr = nic_base + AXNET_MII_EEP;
631 if (!netif_device_present(dev)) goto reschedule;
633 /* Check for pending interrupt with expired latency timer: with
634 this, we can limp along even if the interrupt is blocked */
635 if (info->stale++ && (inb_p(nic_base + EN0_ISR) & ENISR_ALL)) {
636 if (!info->fast_poll)
637 printk(KERN_INFO "%s: interrupt(s) dropped!\n", dev->name);
638 ei_irq_wrapper(dev->irq, dev, NULL);
639 info->fast_poll = HZ;
641 if (info->fast_poll) {
643 info->watchdog.expires = jiffies + 1;
644 add_timer(&info->watchdog);
648 if (info->phy_id < 0)
650 link = mdio_read(mii_addr, info->phy_id, 1);
651 if (!link || (link == 0xffff)) {
652 printk(KERN_INFO "%s: MII is missing!\n", dev->name);
658 if (link != info->link_status) {
659 u_short p = mdio_read(mii_addr, info->phy_id, 5);
660 printk(KERN_INFO "%s: %s link beat\n", dev->name,
661 (link) ? "found" : "lost");
663 info->duplex_flag = (p & 0x0140) ? 0x80 : 0x00;
665 printk(KERN_INFO "%s: autonegotiation complete: "
666 "%sbaseT-%cD selected\n", dev->name,
667 ((p & 0x0180) ? "100" : "10"),
668 ((p & 0x0140) ? 'F' : 'H'));
670 printk(KERN_INFO "%s: link partner did not autonegotiate\n",
672 AX88190_init(dev, 1);
674 info->link_status = link;
678 info->watchdog.expires = jiffies + HZ;
679 add_timer(&info->watchdog);
682 static void netdev_get_drvinfo(struct net_device *dev,
683 struct ethtool_drvinfo *info)
685 strcpy(info->driver, "axnet_cs");
688 static struct ethtool_ops netdev_ethtool_ops = {
689 .get_drvinfo = netdev_get_drvinfo,
692 /*====================================================================*/
694 static int axnet_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
696 axnet_dev_t *info = PRIV(dev);
697 u16 *data = (u16 *)&rq->ifr_ifru;
698 kio_addr_t mii_addr = dev->base_addr + AXNET_MII_EEP;
701 data[0] = info->phy_id;
702 case SIOCGMIIREG: /* Read MII PHY register. */
703 data[3] = mdio_read(mii_addr, data[0], data[1] & 0x1f);
705 case SIOCSMIIREG: /* Write MII PHY register. */
706 if (!capable(CAP_NET_ADMIN))
708 mdio_write(mii_addr, data[0], data[1] & 0x1f, data[2]);
714 /*====================================================================*/
716 static void get_8390_hdr(struct net_device *dev,
717 struct e8390_pkt_hdr *hdr,
720 kio_addr_t nic_base = dev->base_addr;
722 outb_p(0, nic_base + EN0_RSARLO); /* On page boundary */
723 outb_p(ring_page, nic_base + EN0_RSARHI);
724 outb_p(E8390_RREAD+E8390_START, nic_base + AXNET_CMD);
726 insw(nic_base + AXNET_DATAPORT, hdr,
727 sizeof(struct e8390_pkt_hdr)>>1);
728 /* Fix for big endian systems */
729 hdr->count = le16_to_cpu(hdr->count);
733 /*====================================================================*/
735 static void block_input(struct net_device *dev, int count,
736 struct sk_buff *skb, int ring_offset)
738 kio_addr_t nic_base = dev->base_addr;
739 int xfer_count = count;
740 char *buf = skb->data;
743 if ((ei_debug > 4) && (count != 4))
744 printk(KERN_DEBUG "%s: [bi=%d]\n", dev->name, count+4);
746 outb_p(ring_offset & 0xff, nic_base + EN0_RSARLO);
747 outb_p(ring_offset >> 8, nic_base + EN0_RSARHI);
748 outb_p(E8390_RREAD+E8390_START, nic_base + AXNET_CMD);
750 insw(nic_base + AXNET_DATAPORT,buf,count>>1);
752 buf[count-1] = inb(nic_base + AXNET_DATAPORT), xfer_count++;
756 /*====================================================================*/
758 static void block_output(struct net_device *dev, int count,
759 const u_char *buf, const int start_page)
761 kio_addr_t nic_base = dev->base_addr;
765 printk(KERN_DEBUG "%s: [bo=%d]\n", dev->name, count);
768 /* Round the count up for word writes. Do we need to do this?
769 What effect will an odd byte count have on the 8390?
770 I should check someday. */
774 outb_p(0x00, nic_base + EN0_RSARLO);
775 outb_p(start_page, nic_base + EN0_RSARHI);
776 outb_p(E8390_RWRITE+E8390_START, nic_base + AXNET_CMD);
777 outsw(nic_base + AXNET_DATAPORT, buf, count>>1);
780 static struct pcmcia_device_id axnet_ids[] = {
781 PCMCIA_PFC_DEVICE_MANF_CARD(0, 0x016c, 0x0081),
782 PCMCIA_DEVICE_MANF_CARD(0x018a, 0x0301),
783 PCMCIA_DEVICE_MANF_CARD(0x026f, 0x0301),
784 PCMCIA_DEVICE_MANF_CARD(0x026f, 0x0303),
785 PCMCIA_DEVICE_MANF_CARD(0x026f, 0x0309),
786 PCMCIA_DEVICE_MANF_CARD(0x0274, 0x1106),
787 PCMCIA_DEVICE_MANF_CARD(0x8a01, 0xc1ab),
788 PCMCIA_DEVICE_PROD_ID12("AmbiCom,Inc.", "Fast Ethernet PC Card(AMB8110)", 0x49b020a7, 0x119cc9fc),
789 PCMCIA_DEVICE_PROD_ID124("Fast Ethernet", "16-bit PC Card", "AX88190", 0xb4be14e3, 0x9a12eb6a, 0xab9be5ef),
790 PCMCIA_DEVICE_PROD_ID12("ASIX", "AX88190", 0x0959823b, 0xab9be5ef),
791 PCMCIA_DEVICE_PROD_ID12("Billionton", "LNA-100B", 0x552ab682, 0xbc3b87e1),
792 PCMCIA_DEVICE_PROD_ID12("CHEETAH ETHERCARD", "EN2228", 0x00fa7bc8, 0x00e990cc),
793 PCMCIA_DEVICE_PROD_ID12("CNet", "CNF301", 0xbc477dde, 0x78c5f40b),
794 PCMCIA_DEVICE_PROD_ID12("corega K.K.", "corega FEther PCC-TXD", 0x5261440f, 0x436768c5),
795 PCMCIA_DEVICE_PROD_ID12("corega K.K.", "corega FEtherII PCC-TXD", 0x5261440f, 0x730df72e),
796 PCMCIA_DEVICE_PROD_ID12("Dynalink", "L100C16", 0x55632fd5, 0x66bc2a90),
797 PCMCIA_DEVICE_PROD_ID12("Linksys", "EtherFast 10/100 PC Card (PCMPC100 V3)", 0x0733cc81, 0x232019a8),
798 PCMCIA_DEVICE_PROD_ID12("MELCO", "LPC3-TX", 0x481e0094, 0xf91af609),
799 PCMCIA_DEVICE_PROD_ID12("PCMCIA", "100BASE", 0x281f1c5d, 0x7c2add04),
800 PCMCIA_DEVICE_PROD_ID12("PCMCIA", "FastEtherCard", 0x281f1c5d, 0x7ef26116),
801 PCMCIA_DEVICE_PROD_ID12("PCMCIA", "FEP501", 0x281f1c5d, 0x2e272058),
802 PCMCIA_DEVICE_PROD_ID14("Network Everywhere", "AX88190", 0x820a67b6, 0xab9be5ef),
803 /* this is not specific enough */
804 /* PCMCIA_DEVICE_MANF_CARD(0x021b, 0x0202), */
807 MODULE_DEVICE_TABLE(pcmcia, axnet_ids);
809 static struct pcmcia_driver axnet_cs_driver = {
810 .owner = THIS_MODULE,
814 .probe = axnet_attach,
815 .remove = axnet_detach,
816 .id_table = axnet_ids,
817 .suspend = axnet_suspend,
818 .resume = axnet_resume,
821 static int __init init_axnet_cs(void)
823 return pcmcia_register_driver(&axnet_cs_driver);
826 static void __exit exit_axnet_cs(void)
828 pcmcia_unregister_driver(&axnet_cs_driver);
831 module_init(init_axnet_cs);
832 module_exit(exit_axnet_cs);
834 /*====================================================================*/
836 /* 8390.c: A general NS8390 ethernet driver core for linux. */
838 Written 1992-94 by Donald Becker.
840 Copyright 1993 United States Government as represented by the
841 Director, National Security Agency.
843 This software may be used and distributed according to the terms
844 of the GNU General Public License, incorporated herein by reference.
846 The author may be reached as becker@scyld.com, or C/O
847 Scyld Computing Corporation
848 410 Severn Ave., Suite 210
851 This is the chip-specific code for many 8390-based ethernet adaptors.
852 This is not a complete driver, it must be combined with board-specific
853 code such as ne.c, wd.c, 3c503.c, etc.
855 Seeing how at least eight drivers use this code, (not counting the
856 PCMCIA ones either) it is easy to break some card by what seems like
857 a simple innocent change. Please contact me or Donald if you think
858 you have found something that needs changing. -- PG
862 Paul Gortmaker : remove set_bit lock, other cleanups.
863 Paul Gortmaker : add ei_get_8390_hdr() so we can pass skb's to
864 ei_block_input() for eth_io_copy_and_sum().
865 Paul Gortmaker : exchange static int ei_pingpong for a #define,
866 also add better Tx error handling.
867 Paul Gortmaker : rewrite Rx overrun handling as per NS specs.
868 Alexey Kuznetsov : use the 8390's six bit hash multicast filter.
869 Paul Gortmaker : tweak ANK's above multicast changes a bit.
870 Paul Gortmaker : update packet statistics for v2.1.x
871 Alan Cox : support arbitary stupid port mappings on the
872 68K Macintosh. Support >16bit I/O spaces
873 Paul Gortmaker : add kmod support for auto-loading of the 8390
874 module by all drivers that require it.
875 Alan Cox : Spinlocking work, added 'BUG_83C690'
876 Paul Gortmaker : Separate out Tx timeout code from Tx path.
879 The National Semiconductor LAN Databook, and the 3Com 3c503 databook.
883 static const char *version_8390 =
884 "8390.c:v1.10cvs 9/23/94 Donald Becker (becker@scyld.com)\n";
886 #include <linux/bitops.h>
888 #include <linux/fcntl.h>
889 #include <linux/in.h>
890 #include <linux/interrupt.h>
892 #include <linux/etherdevice.h>
896 /* These are the operational function interfaces to board-specific
898 void reset_8390(struct net_device *dev)
899 Resets the board associated with DEV, including a hardware reset of
900 the 8390. This is only called when there is a transmit timeout, and
901 it is always followed by 8390_init().
902 void block_output(struct net_device *dev, int count, const unsigned char *buf,
904 Write the COUNT bytes of BUF to the packet buffer at START_PAGE. The
905 "page" value uses the 8390's 256-byte pages.
906 void get_8390_hdr(struct net_device *dev, struct e8390_hdr *hdr, int ring_page)
907 Read the 4 byte, page aligned 8390 header. *If* there is a
908 subsequent read, it will be of the rest of the packet.
909 void block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset)
910 Read COUNT bytes from the packet buffer into the skb data area. Start
911 reading from RING_OFFSET, the address as the 8390 sees it. This will always
912 follow the read of the 8390 header.
914 #define ei_reset_8390 (ei_local->reset_8390)
915 #define ei_block_output (ei_local->block_output)
916 #define ei_block_input (ei_local->block_input)
917 #define ei_get_8390_hdr (ei_local->get_8390_hdr)
919 /* use 0 for production, 1 for verification, >2 for debug */
924 /* Index to functions. */
925 static void ei_tx_intr(struct net_device *dev);
926 static void ei_tx_err(struct net_device *dev);
927 static void ei_tx_timeout(struct net_device *dev);
928 static void ei_receive(struct net_device *dev);
929 static void ei_rx_overrun(struct net_device *dev);
931 /* Routines generic to NS8390-based boards. */
932 static void NS8390_trigger_send(struct net_device *dev, unsigned int length,
934 static void set_multicast_list(struct net_device *dev);
935 static void do_set_multicast_list(struct net_device *dev);
938 * SMP and the 8390 setup.
940 * The 8390 isnt exactly designed to be multithreaded on RX/TX. There is
941 * a page register that controls bank and packet buffer access. We guard
942 * this with ei_local->page_lock. Nobody should assume or set the page other
943 * than zero when the lock is not held. Lock holders must restore page 0
944 * before unlocking. Even pure readers must take the lock to protect in
947 * To make life difficult the chip can also be very slow. We therefore can't
948 * just use spinlocks. For the longer lockups we disable the irq the device
949 * sits on and hold the lock. We must hold the lock because there is a dual
950 * processor case other than interrupts (get stats/set multicast list in
951 * parallel with each other and transmit).
953 * Note: in theory we can just disable the irq on the card _but_ there is
954 * a latency on SMP irq delivery. So we can easily go "disable irq" "sync irqs"
955 * enter lock, take the queued irq. So we waddle instead of flying.
957 * Finally by special arrangement for the purpose of being generally
958 * annoying the transmit function is called bh atomic. That places
959 * restrictions on the user context callers as disable_irq won't save
964 * ax_open - Open/initialize the board.
965 * @dev: network device to initialize
967 * This routine goes all-out, setting everything
968 * up anew at each open, even though many of these registers should only
969 * need to be set once at boot.
971 static int ax_open(struct net_device *dev)
974 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
976 #ifdef HAVE_TX_TIMEOUT
977 /* The card I/O part of the driver (e.g. 3c503) can hook a Tx timeout
978 wrapper that does e.g. media check & then calls ei_tx_timeout. */
979 if (dev->tx_timeout == NULL)
980 dev->tx_timeout = ei_tx_timeout;
981 if (dev->watchdog_timeo <= 0)
982 dev->watchdog_timeo = TX_TIMEOUT;
986 * Grab the page lock so we own the register set, then call
990 spin_lock_irqsave(&ei_local->page_lock, flags);
991 AX88190_init(dev, 1);
992 /* Set the flag before we drop the lock, That way the IRQ arrives
993 after its set and we get no silly warnings */
994 netif_start_queue(dev);
995 spin_unlock_irqrestore(&ei_local->page_lock, flags);
996 ei_local->irqlock = 0;
1000 #define dev_lock(dev) (((struct ei_device *)netdev_priv(dev))->page_lock)
1003 * ax_close - shut down network device
1004 * @dev: network device to close
1006 * Opposite of ax_open(). Only used when "ifconfig <devname> down" is done.
1008 int ax_close(struct net_device *dev)
1010 unsigned long flags;
1013 * Hold the page lock during close
1016 spin_lock_irqsave(&dev_lock(dev), flags);
1017 AX88190_init(dev, 0);
1018 spin_unlock_irqrestore(&dev_lock(dev), flags);
1019 netif_stop_queue(dev);
1024 * ei_tx_timeout - handle transmit time out condition
1025 * @dev: network device which has apparently fallen asleep
1027 * Called by kernel when device never acknowledges a transmit has
1028 * completed (or failed) - i.e. never posted a Tx related interrupt.
1031 void ei_tx_timeout(struct net_device *dev)
1033 long e8390_base = dev->base_addr;
1034 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1035 int txsr, isr, tickssofar = jiffies - dev->trans_start;
1036 unsigned long flags;
1038 ei_local->stat.tx_errors++;
1040 spin_lock_irqsave(&ei_local->page_lock, flags);
1041 txsr = inb(e8390_base+EN0_TSR);
1042 isr = inb(e8390_base+EN0_ISR);
1043 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1045 printk(KERN_DEBUG "%s: Tx timed out, %s TSR=%#2x, ISR=%#2x, t=%d.\n",
1046 dev->name, (txsr & ENTSR_ABT) ? "excess collisions." :
1047 (isr) ? "lost interrupt?" : "cable problem?", txsr, isr, tickssofar);
1049 if (!isr && !ei_local->stat.tx_packets)
1051 /* The 8390 probably hasn't gotten on the cable yet. */
1052 ei_local->interface_num ^= 1; /* Try a different xcvr. */
1055 /* Ugly but a reset can be slow, yet must be protected */
1057 disable_irq_nosync(dev->irq);
1058 spin_lock(&ei_local->page_lock);
1060 /* Try to restart the card. Perhaps the user has fixed something. */
1062 AX88190_init(dev, 1);
1064 spin_unlock(&ei_local->page_lock);
1065 enable_irq(dev->irq);
1066 netif_wake_queue(dev);
1070 * ei_start_xmit - begin packet transmission
1071 * @skb: packet to be sent
1072 * @dev: network device to which packet is sent
1074 * Sends a packet to an 8390 network device.
1077 static int ei_start_xmit(struct sk_buff *skb, struct net_device *dev)
1079 long e8390_base = dev->base_addr;
1080 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1081 int length, send_length, output_page;
1082 unsigned long flags;
1083 u8 packet[ETH_ZLEN];
1085 netif_stop_queue(dev);
1089 /* Mask interrupts from the ethercard.
1090 SMP: We have to grab the lock here otherwise the IRQ handler
1091 on another CPU can flip window and race the IRQ mask set. We end
1092 up trashing the mcast filter not disabling irqs if we don't lock */
1094 spin_lock_irqsave(&ei_local->page_lock, flags);
1095 outb_p(0x00, e8390_base + EN0_IMR);
1096 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1099 * Slow phase with lock held.
1102 disable_irq_nosync(dev->irq);
1104 spin_lock(&ei_local->page_lock);
1106 ei_local->irqlock = 1;
1108 send_length = ETH_ZLEN < length ? length : ETH_ZLEN;
1111 * We have two Tx slots available for use. Find the first free
1112 * slot, and then perform some sanity checks. With two Tx bufs,
1113 * you get very close to transmitting back-to-back packets. With
1114 * only one Tx buf, the transmitter sits idle while you reload the
1115 * card, leaving a substantial gap between each transmitted packet.
1118 if (ei_local->tx1 == 0)
1120 output_page = ei_local->tx_start_page;
1121 ei_local->tx1 = send_length;
1122 if (ei_debug && ei_local->tx2 > 0)
1123 printk(KERN_DEBUG "%s: idle transmitter tx2=%d, lasttx=%d, txing=%d.\n",
1124 dev->name, ei_local->tx2, ei_local->lasttx, ei_local->txing);
1126 else if (ei_local->tx2 == 0)
1128 output_page = ei_local->tx_start_page + TX_PAGES/2;
1129 ei_local->tx2 = send_length;
1130 if (ei_debug && ei_local->tx1 > 0)
1131 printk(KERN_DEBUG "%s: idle transmitter, tx1=%d, lasttx=%d, txing=%d.\n",
1132 dev->name, ei_local->tx1, ei_local->lasttx, ei_local->txing);
1135 { /* We should never get here. */
1137 printk(KERN_DEBUG "%s: No Tx buffers free! tx1=%d tx2=%d last=%d\n",
1138 dev->name, ei_local->tx1, ei_local->tx2, ei_local->lasttx);
1139 ei_local->irqlock = 0;
1140 netif_stop_queue(dev);
1141 outb_p(ENISR_ALL, e8390_base + EN0_IMR);
1142 spin_unlock(&ei_local->page_lock);
1143 enable_irq(dev->irq);
1144 ei_local->stat.tx_errors++;
1149 * Okay, now upload the packet and trigger a send if the transmitter
1150 * isn't already sending. If it is busy, the interrupt handler will
1151 * trigger the send later, upon receiving a Tx done interrupt.
1154 if (length == skb->len)
1155 ei_block_output(dev, length, skb->data, output_page);
1157 memset(packet, 0, ETH_ZLEN);
1158 memcpy(packet, skb->data, skb->len);
1159 ei_block_output(dev, length, packet, output_page);
1162 if (! ei_local->txing)
1164 ei_local->txing = 1;
1165 NS8390_trigger_send(dev, send_length, output_page);
1166 dev->trans_start = jiffies;
1167 if (output_page == ei_local->tx_start_page)
1170 ei_local->lasttx = -1;
1175 ei_local->lasttx = -2;
1178 else ei_local->txqueue++;
1180 if (ei_local->tx1 && ei_local->tx2)
1181 netif_stop_queue(dev);
1183 netif_start_queue(dev);
1185 /* Turn 8390 interrupts back on. */
1186 ei_local->irqlock = 0;
1187 outb_p(ENISR_ALL, e8390_base + EN0_IMR);
1189 spin_unlock(&ei_local->page_lock);
1190 enable_irq(dev->irq);
1192 dev_kfree_skb (skb);
1193 ei_local->stat.tx_bytes += send_length;
1199 * ax_interrupt - handle the interrupts from an 8390
1200 * @irq: interrupt number
1201 * @dev_id: a pointer to the net_device
1204 * Handle the ether interface interrupts. We pull packets from
1205 * the 8390 via the card specific functions and fire them at the networking
1206 * stack. We also handle transmit completions and wake the transmit path if
1207 * necessary. We also update the counters and do other housekeeping as
1211 static irqreturn_t ax_interrupt(int irq, void *dev_id, struct pt_regs * regs)
1213 struct net_device *dev = dev_id;
1215 int interrupts, nr_serviced = 0, i;
1216 struct ei_device *ei_local;
1221 printk ("net_interrupt(): irq %d for unknown device.\n", irq);
1225 e8390_base = dev->base_addr;
1226 ei_local = (struct ei_device *) netdev_priv(dev);
1229 * Protect the irq test too.
1232 spin_lock(&ei_local->page_lock);
1234 if (ei_local->irqlock)
1236 #if 1 /* This might just be an interrupt for a PCI device sharing this line */
1237 /* The "irqlock" check is only for testing. */
1238 printk(ei_local->irqlock
1239 ? "%s: Interrupted while interrupts are masked! isr=%#2x imr=%#2x.\n"
1240 : "%s: Reentering the interrupt handler! isr=%#2x imr=%#2x.\n",
1241 dev->name, inb_p(e8390_base + EN0_ISR),
1242 inb_p(e8390_base + EN0_IMR));
1244 spin_unlock(&ei_local->page_lock);
1249 printk(KERN_DEBUG "%s: interrupt(isr=%#2.2x).\n", dev->name,
1250 inb_p(e8390_base + EN0_ISR));
1252 outb_p(0x00, e8390_base + EN0_ISR);
1253 ei_local->irqlock = 1;
1255 /* !!Assumption!! -- we stay in page 0. Don't break this. */
1256 while ((interrupts = inb_p(e8390_base + EN0_ISR)) != 0
1257 && ++nr_serviced < MAX_SERVICE)
1259 if (!netif_running(dev) || (interrupts == 0xff)) {
1261 printk(KERN_WARNING "%s: interrupt from stopped card\n", dev->name);
1262 outb_p(interrupts, e8390_base + EN0_ISR);
1268 /* AX88190 bug fix. */
1269 outb_p(interrupts, e8390_base + EN0_ISR);
1270 for (i = 0; i < 10; i++) {
1271 if (!(inb(e8390_base + EN0_ISR) & interrupts))
1273 outb_p(0, e8390_base + EN0_ISR);
1274 outb_p(interrupts, e8390_base + EN0_ISR);
1276 if (interrupts & ENISR_OVER)
1278 else if (interrupts & (ENISR_RX+ENISR_RX_ERR))
1280 /* Got a good (?) packet. */
1283 /* Push the next to-transmit packet through. */
1284 if (interrupts & ENISR_TX)
1286 else if (interrupts & ENISR_TX_ERR)
1289 if (interrupts & ENISR_COUNTERS)
1291 ei_local->stat.rx_frame_errors += inb_p(e8390_base + EN0_COUNTER0);
1292 ei_local->stat.rx_crc_errors += inb_p(e8390_base + EN0_COUNTER1);
1293 ei_local->stat.rx_missed_errors+= inb_p(e8390_base + EN0_COUNTER2);
1297 if (interrupts && ei_debug)
1300 if (nr_serviced >= MAX_SERVICE)
1302 /* 0xFF is valid for a card removal */
1303 if(interrupts!=0xFF)
1304 printk(KERN_WARNING "%s: Too much work at interrupt, status %#2.2x\n",
1305 dev->name, interrupts);
1306 outb_p(ENISR_ALL, e8390_base + EN0_ISR); /* Ack. most intrs. */
1308 printk(KERN_WARNING "%s: unknown interrupt %#2x\n", dev->name, interrupts);
1309 outb_p(0xff, e8390_base + EN0_ISR); /* Ack. all intrs. */
1313 /* Turn 8390 interrupts back on. */
1314 ei_local->irqlock = 0;
1315 outb_p(ENISR_ALL, e8390_base + EN0_IMR);
1317 spin_unlock(&ei_local->page_lock);
1318 return IRQ_RETVAL(handled);
1322 * ei_tx_err - handle transmitter error
1323 * @dev: network device which threw the exception
1325 * A transmitter error has happened. Most likely excess collisions (which
1326 * is a fairly normal condition). If the error is one where the Tx will
1327 * have been aborted, we try and send another one right away, instead of
1328 * letting the failed packet sit and collect dust in the Tx buffer. This
1329 * is a much better solution as it avoids kernel based Tx timeouts, and
1330 * an unnecessary card reset.
1332 * Called with lock held.
1335 static void ei_tx_err(struct net_device *dev)
1337 long e8390_base = dev->base_addr;
1338 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1339 unsigned char txsr = inb_p(e8390_base+EN0_TSR);
1340 unsigned char tx_was_aborted = txsr & (ENTSR_ABT+ENTSR_FU);
1342 #ifdef VERBOSE_ERROR_DUMP
1343 printk(KERN_DEBUG "%s: transmitter error (%#2x): ", dev->name, txsr);
1344 if (txsr & ENTSR_ABT)
1345 printk("excess-collisions ");
1346 if (txsr & ENTSR_ND)
1347 printk("non-deferral ");
1348 if (txsr & ENTSR_CRS)
1349 printk("lost-carrier ");
1350 if (txsr & ENTSR_FU)
1351 printk("FIFO-underrun ");
1352 if (txsr & ENTSR_CDH)
1353 printk("lost-heartbeat ");
1361 ei_local->stat.tx_errors++;
1362 if (txsr & ENTSR_CRS) ei_local->stat.tx_carrier_errors++;
1363 if (txsr & ENTSR_CDH) ei_local->stat.tx_heartbeat_errors++;
1364 if (txsr & ENTSR_OWC) ei_local->stat.tx_window_errors++;
1369 * ei_tx_intr - transmit interrupt handler
1370 * @dev: network device for which tx intr is handled
1372 * We have finished a transmit: check for errors and then trigger the next
1373 * packet to be sent. Called with lock held.
1376 static void ei_tx_intr(struct net_device *dev)
1378 long e8390_base = dev->base_addr;
1379 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1380 int status = inb(e8390_base + EN0_TSR);
1383 * There are two Tx buffers, see which one finished, and trigger
1384 * the send of another one if it exists.
1386 ei_local->txqueue--;
1388 if (ei_local->tx1 < 0)
1390 if (ei_local->lasttx != 1 && ei_local->lasttx != -1)
1391 printk(KERN_ERR "%s: bogus last_tx_buffer %d, tx1=%d.\n",
1392 ei_local->name, ei_local->lasttx, ei_local->tx1);
1394 if (ei_local->tx2 > 0)
1396 ei_local->txing = 1;
1397 NS8390_trigger_send(dev, ei_local->tx2, ei_local->tx_start_page + 6);
1398 dev->trans_start = jiffies;
1400 ei_local->lasttx = 2;
1402 else ei_local->lasttx = 20, ei_local->txing = 0;
1404 else if (ei_local->tx2 < 0)
1406 if (ei_local->lasttx != 2 && ei_local->lasttx != -2)
1407 printk("%s: bogus last_tx_buffer %d, tx2=%d.\n",
1408 ei_local->name, ei_local->lasttx, ei_local->tx2);
1410 if (ei_local->tx1 > 0)
1412 ei_local->txing = 1;
1413 NS8390_trigger_send(dev, ei_local->tx1, ei_local->tx_start_page);
1414 dev->trans_start = jiffies;
1416 ei_local->lasttx = 1;
1419 ei_local->lasttx = 10, ei_local->txing = 0;
1421 // else printk(KERN_WARNING "%s: unexpected TX-done interrupt, lasttx=%d.\n",
1422 // dev->name, ei_local->lasttx);
1424 /* Minimize Tx latency: update the statistics after we restart TXing. */
1425 if (status & ENTSR_COL)
1426 ei_local->stat.collisions++;
1427 if (status & ENTSR_PTX)
1428 ei_local->stat.tx_packets++;
1431 ei_local->stat.tx_errors++;
1432 if (status & ENTSR_ABT)
1434 ei_local->stat.tx_aborted_errors++;
1435 ei_local->stat.collisions += 16;
1437 if (status & ENTSR_CRS)
1438 ei_local->stat.tx_carrier_errors++;
1439 if (status & ENTSR_FU)
1440 ei_local->stat.tx_fifo_errors++;
1441 if (status & ENTSR_CDH)
1442 ei_local->stat.tx_heartbeat_errors++;
1443 if (status & ENTSR_OWC)
1444 ei_local->stat.tx_window_errors++;
1446 netif_wake_queue(dev);
1450 * ei_receive - receive some packets
1451 * @dev: network device with which receive will be run
1453 * We have a good packet(s), get it/them out of the buffers.
1454 * Called with lock held.
1457 static void ei_receive(struct net_device *dev)
1459 long e8390_base = dev->base_addr;
1460 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1461 unsigned char rxing_page, this_frame, next_frame;
1462 unsigned short current_offset;
1463 int rx_pkt_count = 0;
1464 struct e8390_pkt_hdr rx_frame;
1466 while (++rx_pkt_count < 10)
1468 int pkt_len, pkt_stat;
1470 /* Get the rx page (incoming packet pointer). */
1471 rxing_page = inb_p(e8390_base + EN1_CURPAG -1);
1473 /* Remove one frame from the ring. Boundary is always a page behind. */
1474 this_frame = inb_p(e8390_base + EN0_BOUNDARY) + 1;
1475 if (this_frame >= ei_local->stop_page)
1476 this_frame = ei_local->rx_start_page;
1478 /* Someday we'll omit the previous, iff we never get this message.
1479 (There is at least one clone claimed to have a problem.)
1481 Keep quiet if it looks like a card removal. One problem here
1482 is that some clones crash in roughly the same way.
1484 if (ei_debug > 0 && this_frame != ei_local->current_page && (this_frame!=0x0 || rxing_page!=0xFF))
1485 printk(KERN_ERR "%s: mismatched read page pointers %2x vs %2x.\n",
1486 dev->name, this_frame, ei_local->current_page);
1488 if (this_frame == rxing_page) /* Read all the frames? */
1489 break; /* Done for now */
1491 current_offset = this_frame << 8;
1492 ei_get_8390_hdr(dev, &rx_frame, this_frame);
1494 pkt_len = rx_frame.count - sizeof(struct e8390_pkt_hdr);
1495 pkt_stat = rx_frame.status;
1497 next_frame = this_frame + 1 + ((pkt_len+4)>>8);
1499 if (pkt_len < 60 || pkt_len > 1518)
1502 printk(KERN_DEBUG "%s: bogus packet size: %d, status=%#2x nxpg=%#2x.\n",
1503 dev->name, rx_frame.count, rx_frame.status,
1505 ei_local->stat.rx_errors++;
1506 ei_local->stat.rx_length_errors++;
1508 else if ((pkt_stat & 0x0F) == ENRSR_RXOK)
1510 struct sk_buff *skb;
1512 skb = dev_alloc_skb(pkt_len+2);
1516 printk(KERN_DEBUG "%s: Couldn't allocate a sk_buff of size %d.\n",
1517 dev->name, pkt_len);
1518 ei_local->stat.rx_dropped++;
1523 skb_reserve(skb,2); /* IP headers on 16 byte boundaries */
1525 skb_put(skb, pkt_len); /* Make room */
1526 ei_block_input(dev, pkt_len, skb, current_offset + sizeof(rx_frame));
1527 skb->protocol=eth_type_trans(skb,dev);
1529 dev->last_rx = jiffies;
1530 ei_local->stat.rx_packets++;
1531 ei_local->stat.rx_bytes += pkt_len;
1532 if (pkt_stat & ENRSR_PHY)
1533 ei_local->stat.multicast++;
1539 printk(KERN_DEBUG "%s: bogus packet: status=%#2x nxpg=%#2x size=%d\n",
1540 dev->name, rx_frame.status, rx_frame.next,
1542 ei_local->stat.rx_errors++;
1543 /* NB: The NIC counts CRC, frame and missed errors. */
1544 if (pkt_stat & ENRSR_FO)
1545 ei_local->stat.rx_fifo_errors++;
1547 next_frame = rx_frame.next;
1549 /* This _should_ never happen: it's here for avoiding bad clones. */
1550 if (next_frame >= ei_local->stop_page) {
1551 printk("%s: next frame inconsistency, %#2x\n", dev->name,
1553 next_frame = ei_local->rx_start_page;
1555 ei_local->current_page = next_frame;
1556 outb_p(next_frame-1, e8390_base+EN0_BOUNDARY);
1563 * ei_rx_overrun - handle receiver overrun
1564 * @dev: network device which threw exception
1566 * We have a receiver overrun: we have to kick the 8390 to get it started
1567 * again. Problem is that you have to kick it exactly as NS prescribes in
1568 * the updated datasheets, or "the NIC may act in an unpredictable manner."
1569 * This includes causing "the NIC to defer indefinitely when it is stopped
1570 * on a busy network." Ugh.
1571 * Called with lock held. Don't call this with the interrupts off or your
1572 * computer will hate you - it takes 10ms or so.
1575 static void ei_rx_overrun(struct net_device *dev)
1577 axnet_dev_t *info = (axnet_dev_t *)dev;
1578 long e8390_base = dev->base_addr;
1579 unsigned char was_txing, must_resend = 0;
1580 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1583 * Record whether a Tx was in progress and then issue the
1586 was_txing = inb_p(e8390_base+E8390_CMD) & E8390_TRANS;
1587 outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD);
1590 printk(KERN_DEBUG "%s: Receiver overrun.\n", dev->name);
1591 ei_local->stat.rx_over_errors++;
1594 * Wait a full Tx time (1.2ms) + some guard time, NS says 1.6ms total.
1595 * Early datasheets said to poll the reset bit, but now they say that
1596 * it "is not a reliable indicator and subsequently should be ignored."
1597 * We wait at least 10ms.
1603 * Reset RBCR[01] back to zero as per magic incantation.
1605 outb_p(0x00, e8390_base+EN0_RCNTLO);
1606 outb_p(0x00, e8390_base+EN0_RCNTHI);
1609 * See if any Tx was interrupted or not. According to NS, this
1610 * step is vital, and skipping it will cause no end of havoc.
1615 unsigned char tx_completed = inb_p(e8390_base+EN0_ISR) & (ENISR_TX+ENISR_TX_ERR);
1621 * Have to enter loopback mode and then restart the NIC before
1622 * you are allowed to slurp packets up off the ring.
1624 outb_p(E8390_TXOFF, e8390_base + EN0_TXCR);
1625 outb_p(E8390_NODMA + E8390_PAGE0 + E8390_START, e8390_base + E8390_CMD);
1628 * Clear the Rx ring of all the debris, and ack the interrupt.
1633 * Leave loopback mode, and resend any packet that got stopped.
1635 outb_p(E8390_TXCONFIG | info->duplex_flag, e8390_base + EN0_TXCR);
1637 outb_p(E8390_NODMA + E8390_PAGE0 + E8390_START + E8390_TRANS, e8390_base + E8390_CMD);
1641 * Collect the stats. This is called unlocked and from several contexts.
1644 static struct net_device_stats *get_stats(struct net_device *dev)
1646 long ioaddr = dev->base_addr;
1647 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1648 unsigned long flags;
1650 /* If the card is stopped, just return the present stats. */
1651 if (!netif_running(dev))
1652 return &ei_local->stat;
1654 spin_lock_irqsave(&ei_local->page_lock,flags);
1655 /* Read the counter registers, assuming we are in page 0. */
1656 ei_local->stat.rx_frame_errors += inb_p(ioaddr + EN0_COUNTER0);
1657 ei_local->stat.rx_crc_errors += inb_p(ioaddr + EN0_COUNTER1);
1658 ei_local->stat.rx_missed_errors+= inb_p(ioaddr + EN0_COUNTER2);
1659 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1661 return &ei_local->stat;
1665 * Form the 64 bit 8390 multicast table from the linked list of addresses
1666 * associated with this dev structure.
1669 static inline void make_mc_bits(u8 *bits, struct net_device *dev)
1671 struct dev_mc_list *dmi;
1674 for (dmi=dev->mc_list; dmi; dmi=dmi->next) {
1676 crc = ether_crc(ETH_ALEN, dmi->dmi_addr);
1678 * The 8390 uses the 6 most significant bits of the
1679 * CRC to index the multicast table.
1681 bits[crc>>29] |= (1<<((crc>>26)&7));
1686 * do_set_multicast_list - set/clear multicast filter
1687 * @dev: net device for which multicast filter is adjusted
1689 * Set or clear the multicast filter for this adaptor.
1690 * Must be called with lock held.
1693 static void do_set_multicast_list(struct net_device *dev)
1695 long e8390_base = dev->base_addr;
1697 struct ei_device *ei_local = (struct ei_device*)netdev_priv(dev);
1699 if (!(dev->flags&(IFF_PROMISC|IFF_ALLMULTI))) {
1700 memset(ei_local->mcfilter, 0, 8);
1702 make_mc_bits(ei_local->mcfilter, dev);
1704 /* set to accept-all */
1705 memset(ei_local->mcfilter, 0xFF, 8);
1709 * DP8390 manuals don't specify any magic sequence for altering
1710 * the multicast regs on an already running card. To be safe, we
1711 * ensure multicast mode is off prior to loading up the new hash
1712 * table. If this proves to be not enough, we can always resort
1713 * to stopping the NIC, loading the table and then restarting.
1716 if (netif_running(dev))
1717 outb_p(E8390_RXCONFIG, e8390_base + EN0_RXCR);
1719 outb_p(E8390_NODMA + E8390_PAGE1, e8390_base + E8390_CMD);
1720 for(i = 0; i < 8; i++)
1722 outb_p(ei_local->mcfilter[i], e8390_base + EN1_MULT_SHIFT(i));
1724 outb_p(E8390_NODMA + E8390_PAGE0, e8390_base + E8390_CMD);
1726 if(dev->flags&IFF_PROMISC)
1727 outb_p(E8390_RXCONFIG | 0x58, e8390_base + EN0_RXCR);
1728 else if(dev->flags&IFF_ALLMULTI || dev->mc_list)
1729 outb_p(E8390_RXCONFIG | 0x48, e8390_base + EN0_RXCR);
1731 outb_p(E8390_RXCONFIG | 0x40, e8390_base + EN0_RXCR);
1735 * Called without lock held. This is invoked from user context and may
1736 * be parallel to just about everything else. Its also fairly quick and
1737 * not called too often. Must protect against both bh and irq users
1740 static void set_multicast_list(struct net_device *dev)
1742 unsigned long flags;
1744 spin_lock_irqsave(&dev_lock(dev), flags);
1745 do_set_multicast_list(dev);
1746 spin_unlock_irqrestore(&dev_lock(dev), flags);
1750 * axdev_setup - init rest of 8390 device struct
1751 * @dev: network device structure to init
1753 * Initialize the rest of the 8390 device structure. Do NOT __init
1754 * this, as it is used by 8390 based modular drivers too.
1757 static void axdev_setup(struct net_device *dev)
1759 struct ei_device *ei_local;
1761 printk(version_8390);
1763 SET_MODULE_OWNER(dev);
1766 ei_local = (struct ei_device *)netdev_priv(dev);
1767 spin_lock_init(&ei_local->page_lock);
1769 dev->hard_start_xmit = &ei_start_xmit;
1770 dev->get_stats = get_stats;
1771 dev->set_multicast_list = &set_multicast_list;
1776 /* This page of functions should be 8390 generic */
1777 /* Follow National Semi's recommendations for initializing the "NIC". */
1780 * AX88190_init - initialize 8390 hardware
1781 * @dev: network device to initialize
1782 * @startp: boolean. non-zero value to initiate chip processing
1784 * Must be called with lock held.
1787 static void AX88190_init(struct net_device *dev, int startp)
1789 axnet_dev_t *info = PRIV(dev);
1790 long e8390_base = dev->base_addr;
1791 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1793 int endcfg = ei_local->word16 ? (0x48 | ENDCFG_WTS) : 0x48;
1795 if(sizeof(struct e8390_pkt_hdr)!=4)
1796 panic("8390.c: header struct mispacked\n");
1797 /* Follow National Semi's recommendations for initing the DP83902. */
1798 outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD); /* 0x21 */
1799 outb_p(endcfg, e8390_base + EN0_DCFG); /* 0x48 or 0x49 */
1800 /* Clear the remote byte count registers. */
1801 outb_p(0x00, e8390_base + EN0_RCNTLO);
1802 outb_p(0x00, e8390_base + EN0_RCNTHI);
1803 /* Set to monitor and loopback mode -- this is vital!. */
1804 outb_p(E8390_RXOFF|0x40, e8390_base + EN0_RXCR); /* 0x60 */
1805 outb_p(E8390_TXOFF, e8390_base + EN0_TXCR); /* 0x02 */
1806 /* Set the transmit page and receive ring. */
1807 outb_p(ei_local->tx_start_page, e8390_base + EN0_TPSR);
1808 ei_local->tx1 = ei_local->tx2 = 0;
1809 outb_p(ei_local->rx_start_page, e8390_base + EN0_STARTPG);
1810 outb_p(ei_local->stop_page-1, e8390_base + EN0_BOUNDARY); /* 3c503 says 0x3f,NS0x26*/
1811 ei_local->current_page = ei_local->rx_start_page; /* assert boundary+1 */
1812 outb_p(ei_local->stop_page, e8390_base + EN0_STOPPG);
1813 /* Clear the pending interrupts and mask. */
1814 outb_p(0xFF, e8390_base + EN0_ISR);
1815 outb_p(0x00, e8390_base + EN0_IMR);
1817 /* Copy the station address into the DS8390 registers. */
1819 outb_p(E8390_NODMA + E8390_PAGE1 + E8390_STOP, e8390_base+E8390_CMD); /* 0x61 */
1820 for(i = 0; i < 6; i++)
1822 outb_p(dev->dev_addr[i], e8390_base + EN1_PHYS_SHIFT(i));
1823 if(inb_p(e8390_base + EN1_PHYS_SHIFT(i))!=dev->dev_addr[i])
1824 printk(KERN_ERR "Hw. address read/write mismap %d\n",i);
1827 outb_p(ei_local->rx_start_page, e8390_base + EN1_CURPAG);
1828 outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD);
1830 netif_start_queue(dev);
1831 ei_local->tx1 = ei_local->tx2 = 0;
1832 ei_local->txing = 0;
1836 outb_p(0xff, e8390_base + EN0_ISR);
1837 outb_p(ENISR_ALL, e8390_base + EN0_IMR);
1838 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, e8390_base+E8390_CMD);
1839 outb_p(E8390_TXCONFIG | info->duplex_flag,
1840 e8390_base + EN0_TXCR); /* xmit on. */
1841 /* 3c503 TechMan says rxconfig only after the NIC is started. */
1842 outb_p(E8390_RXCONFIG | 0x40, e8390_base + EN0_RXCR); /* rx on, */
1843 do_set_multicast_list(dev); /* (re)load the mcast table */
1847 /* Trigger a transmit start, assuming the length is valid.
1848 Always called with the page lock held */
1850 static void NS8390_trigger_send(struct net_device *dev, unsigned int length,
1853 long e8390_base = dev->base_addr;
1854 struct ei_device *ei_local __attribute((unused)) = (struct ei_device *) netdev_priv(dev);
1856 if (inb_p(e8390_base) & E8390_TRANS)
1858 printk(KERN_WARNING "%s: trigger_send() called with the transmitter busy.\n",
1862 outb_p(length & 0xff, e8390_base + EN0_TCNTLO);
1863 outb_p(length >> 8, e8390_base + EN0_TCNTHI);
1864 outb_p(start_page, e8390_base + EN0_TPSR);
1865 outb_p(E8390_NODMA+E8390_TRANS+E8390_START, e8390_base+E8390_CMD);