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[deliverable/linux.git] / drivers / net / pcmcia / axnet_cs.c
1 /*======================================================================
2
3 A PCMCIA ethernet driver for Asix AX88190-based cards
4
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.
11
12 Copyright (C) 2001 David A. Hinds -- dahinds@users.sourceforge.net
13
14 axnet_cs.c 1.28 2002/06/29 06:27:37
15
16 The network driver code is based on Donald Becker's NE2000 code:
17
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
24
25 ======================================================================*/
26
27 #include <linux/kernel.h>
28 #include <linux/module.h>
29 #include <linux/init.h>
30 #include <linux/ptrace.h>
31 #include <linux/slab.h>
32 #include <linux/string.h>
33 #include <linux/timer.h>
34 #include <linux/delay.h>
35 #include <linux/spinlock.h>
36 #include <linux/ethtool.h>
37 #include <linux/netdevice.h>
38 #include <linux/etherdevice.h>
39 #include <linux/crc32.h>
40 #include "../8390.h"
41
42 #include <pcmcia/cs_types.h>
43 #include <pcmcia/cs.h>
44 #include <pcmcia/cistpl.h>
45 #include <pcmcia/ciscode.h>
46 #include <pcmcia/ds.h>
47 #include <pcmcia/cisreg.h>
48
49 #include <asm/io.h>
50 #include <asm/system.h>
51 #include <asm/byteorder.h>
52 #include <asm/uaccess.h>
53
54 #define AXNET_CMD 0x00
55 #define AXNET_DATAPORT 0x10 /* NatSemi-defined port window offset. */
56 #define AXNET_RESET 0x1f /* Issue a read to reset, a write to clear. */
57 #define AXNET_MII_EEP 0x14 /* Offset of MII access port */
58 #define AXNET_TEST 0x15 /* Offset of TEST Register port */
59 #define AXNET_GPIO 0x17 /* Offset of General Purpose Register Port */
60
61 #define AXNET_START_PG 0x40 /* First page of TX buffer */
62 #define AXNET_STOP_PG 0x80 /* Last page +1 of RX ring */
63
64 #define AXNET_RDC_TIMEOUT 0x02 /* Max wait in jiffies for Tx RDC */
65
66 #define IS_AX88190 0x0001
67 #define IS_AX88790 0x0002
68
69 /*====================================================================*/
70
71 /* Module parameters */
72
73 MODULE_AUTHOR("David Hinds <dahinds@users.sourceforge.net>");
74 MODULE_DESCRIPTION("Asix AX88190 PCMCIA ethernet driver");
75 MODULE_LICENSE("GPL");
76
77 #ifdef PCMCIA_DEBUG
78 #define INT_MODULE_PARM(n, v) static int n = v; module_param(n, int, 0)
79
80 INT_MODULE_PARM(pc_debug, PCMCIA_DEBUG);
81 #define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args)
82 static char *version =
83 "axnet_cs.c 1.28 2002/06/29 06:27:37 (David Hinds)";
84 #else
85 #define DEBUG(n, args...)
86 #endif
87
88 /*====================================================================*/
89
90 static int axnet_config(struct pcmcia_device *link);
91 static void axnet_release(struct pcmcia_device *link);
92 static int axnet_open(struct net_device *dev);
93 static int axnet_close(struct net_device *dev);
94 static int axnet_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
95 static netdev_tx_t axnet_start_xmit(struct sk_buff *skb,
96 struct net_device *dev);
97 static struct net_device_stats *get_stats(struct net_device *dev);
98 static void set_multicast_list(struct net_device *dev);
99 static void axnet_tx_timeout(struct net_device *dev);
100 static const struct ethtool_ops netdev_ethtool_ops;
101 static irqreturn_t ei_irq_wrapper(int irq, void *dev_id);
102 static void ei_watchdog(u_long arg);
103 static void axnet_reset_8390(struct net_device *dev);
104
105 static int mdio_read(unsigned int addr, int phy_id, int loc);
106 static void mdio_write(unsigned int addr, int phy_id, int loc, int value);
107
108 static void get_8390_hdr(struct net_device *,
109 struct e8390_pkt_hdr *, int);
110 static void block_input(struct net_device *dev, int count,
111 struct sk_buff *skb, int ring_offset);
112 static void block_output(struct net_device *dev, int count,
113 const u_char *buf, const int start_page);
114
115 static void axnet_detach(struct pcmcia_device *p_dev);
116
117 static void AX88190_init(struct net_device *dev, int startp);
118 static int ax_open(struct net_device *dev);
119 static int ax_close(struct net_device *dev);
120 static irqreturn_t ax_interrupt(int irq, void *dev_id);
121
122 /*====================================================================*/
123
124 typedef struct axnet_dev_t {
125 struct pcmcia_device *p_dev;
126 dev_node_t node;
127 caddr_t base;
128 struct timer_list watchdog;
129 int stale, fast_poll;
130 u_short link_status;
131 u_char duplex_flag;
132 int phy_id;
133 int flags;
134 } axnet_dev_t;
135
136 static inline axnet_dev_t *PRIV(struct net_device *dev)
137 {
138 void *p = (char *)netdev_priv(dev) + sizeof(struct ei_device);
139 return p;
140 }
141
142 static const struct net_device_ops axnet_netdev_ops = {
143 .ndo_open = axnet_open,
144 .ndo_stop = axnet_close,
145 .ndo_do_ioctl = axnet_ioctl,
146 .ndo_start_xmit = axnet_start_xmit,
147 .ndo_tx_timeout = axnet_tx_timeout,
148 .ndo_get_stats = get_stats,
149 .ndo_set_multicast_list = set_multicast_list,
150 .ndo_change_mtu = eth_change_mtu,
151 .ndo_set_mac_address = eth_mac_addr,
152 .ndo_validate_addr = eth_validate_addr,
153 };
154
155 /*======================================================================
156
157 axnet_attach() creates an "instance" of the driver, allocating
158 local data structures for one device. The device is registered
159 with Card Services.
160
161 ======================================================================*/
162
163 static int axnet_probe(struct pcmcia_device *link)
164 {
165 axnet_dev_t *info;
166 struct net_device *dev;
167 struct ei_device *ei_local;
168
169 DEBUG(0, "axnet_attach()\n");
170
171 dev = alloc_etherdev(sizeof(struct ei_device) + sizeof(axnet_dev_t));
172 if (!dev)
173 return -ENOMEM;
174
175 ei_local = netdev_priv(dev);
176 spin_lock_init(&ei_local->page_lock);
177
178 info = PRIV(dev);
179 info->p_dev = link;
180 link->priv = dev;
181 link->irq.Attributes = IRQ_TYPE_DYNAMIC_SHARING;
182 link->irq.IRQInfo1 = IRQ_LEVEL_ID;
183 link->conf.Attributes = CONF_ENABLE_IRQ;
184 link->conf.IntType = INT_MEMORY_AND_IO;
185
186 dev->netdev_ops = &axnet_netdev_ops;
187
188 SET_ETHTOOL_OPS(dev, &netdev_ethtool_ops);
189 dev->watchdog_timeo = TX_TIMEOUT;
190
191 return axnet_config(link);
192 } /* axnet_attach */
193
194 /*======================================================================
195
196 This deletes a driver "instance". The device is de-registered
197 with Card Services. If it has been released, all local data
198 structures are freed. Otherwise, the structures will be freed
199 when the device is released.
200
201 ======================================================================*/
202
203 static void axnet_detach(struct pcmcia_device *link)
204 {
205 struct net_device *dev = link->priv;
206
207 DEBUG(0, "axnet_detach(0x%p)\n", link);
208
209 if (link->dev_node)
210 unregister_netdev(dev);
211
212 axnet_release(link);
213
214 free_netdev(dev);
215 } /* axnet_detach */
216
217 /*======================================================================
218
219 This probes for a card's hardware address by reading the PROM.
220
221 ======================================================================*/
222
223 static int get_prom(struct pcmcia_device *link)
224 {
225 struct net_device *dev = link->priv;
226 unsigned int ioaddr = dev->base_addr;
227 int i, j;
228
229 /* This is based on drivers/net/ne.c */
230 struct {
231 u_char value, offset;
232 } program_seq[] = {
233 {E8390_NODMA+E8390_PAGE0+E8390_STOP, E8390_CMD}, /* Select page 0*/
234 {0x01, EN0_DCFG}, /* Set word-wide access. */
235 {0x00, EN0_RCNTLO}, /* Clear the count regs. */
236 {0x00, EN0_RCNTHI},
237 {0x00, EN0_IMR}, /* Mask completion irq. */
238 {0xFF, EN0_ISR},
239 {E8390_RXOFF|0x40, EN0_RXCR}, /* 0x60 Set to monitor */
240 {E8390_TXOFF, EN0_TXCR}, /* 0x02 and loopback mode. */
241 {0x10, EN0_RCNTLO},
242 {0x00, EN0_RCNTHI},
243 {0x00, EN0_RSARLO}, /* DMA starting at 0x0400. */
244 {0x04, EN0_RSARHI},
245 {E8390_RREAD+E8390_START, E8390_CMD},
246 };
247
248 /* Not much of a test, but the alternatives are messy */
249 if (link->conf.ConfigBase != 0x03c0)
250 return 0;
251
252 axnet_reset_8390(dev);
253 mdelay(10);
254
255 for (i = 0; i < ARRAY_SIZE(program_seq); i++)
256 outb_p(program_seq[i].value, ioaddr + program_seq[i].offset);
257
258 for (i = 0; i < 6; i += 2) {
259 j = inw(ioaddr + AXNET_DATAPORT);
260 dev->dev_addr[i] = j & 0xff;
261 dev->dev_addr[i+1] = j >> 8;
262 }
263 return 1;
264 } /* get_prom */
265
266 /*======================================================================
267
268 axnet_config() is scheduled to run after a CARD_INSERTION event
269 is received, to configure the PCMCIA socket, and to make the
270 ethernet device available to the system.
271
272 ======================================================================*/
273
274 #define CS_CHECK(fn, ret) \
275 do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
276
277 static int try_io_port(struct pcmcia_device *link)
278 {
279 int j, ret;
280 if (link->io.NumPorts1 == 32) {
281 link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;
282 if (link->io.NumPorts2 > 0) {
283 /* for master/slave multifunction cards */
284 link->io.Attributes2 = IO_DATA_PATH_WIDTH_8;
285 link->irq.Attributes =
286 IRQ_TYPE_DYNAMIC_SHARING|IRQ_FIRST_SHARED;
287 }
288 } else {
289 /* This should be two 16-port windows */
290 link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
291 link->io.Attributes2 = IO_DATA_PATH_WIDTH_16;
292 }
293 if (link->io.BasePort1 == 0) {
294 link->io.IOAddrLines = 16;
295 for (j = 0; j < 0x400; j += 0x20) {
296 link->io.BasePort1 = j ^ 0x300;
297 link->io.BasePort2 = (j ^ 0x300) + 0x10;
298 ret = pcmcia_request_io(link, &link->io);
299 if (ret == 0)
300 return ret;
301 }
302 return ret;
303 } else {
304 return pcmcia_request_io(link, &link->io);
305 }
306 }
307
308 static int axnet_configcheck(struct pcmcia_device *p_dev,
309 cistpl_cftable_entry_t *cfg,
310 cistpl_cftable_entry_t *dflt,
311 unsigned int vcc,
312 void *priv_data)
313 {
314 int i;
315 cistpl_io_t *io = &cfg->io;
316
317 if (cfg->index == 0 || cfg->io.nwin == 0)
318 return -ENODEV;
319
320 p_dev->conf.ConfigIndex = 0x05;
321 /* For multifunction cards, by convention, we configure the
322 network function with window 0, and serial with window 1 */
323 if (io->nwin > 1) {
324 i = (io->win[1].len > io->win[0].len);
325 p_dev->io.BasePort2 = io->win[1-i].base;
326 p_dev->io.NumPorts2 = io->win[1-i].len;
327 } else {
328 i = p_dev->io.NumPorts2 = 0;
329 }
330 p_dev->io.BasePort1 = io->win[i].base;
331 p_dev->io.NumPorts1 = io->win[i].len;
332 p_dev->io.IOAddrLines = io->flags & CISTPL_IO_LINES_MASK;
333 if (p_dev->io.NumPorts1 + p_dev->io.NumPorts2 >= 32)
334 return try_io_port(p_dev);
335
336 return -ENODEV;
337 }
338
339 static int axnet_config(struct pcmcia_device *link)
340 {
341 struct net_device *dev = link->priv;
342 axnet_dev_t *info = PRIV(dev);
343 int i, j, j2, last_ret, last_fn;
344
345 DEBUG(0, "axnet_config(0x%p)\n", link);
346
347 /* don't trust the CIS on this; Linksys got it wrong */
348 link->conf.Present = 0x63;
349 last_ret = pcmcia_loop_config(link, axnet_configcheck, NULL);
350 if (last_ret != 0) {
351 cs_error(link, RequestIO, last_ret);
352 goto failed;
353 }
354
355 CS_CHECK(RequestIRQ, pcmcia_request_irq(link, &link->irq));
356
357 if (link->io.NumPorts2 == 8) {
358 link->conf.Attributes |= CONF_ENABLE_SPKR;
359 link->conf.Status = CCSR_AUDIO_ENA;
360 }
361
362 CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link, &link->conf));
363 dev->irq = link->irq.AssignedIRQ;
364 dev->base_addr = link->io.BasePort1;
365
366 if (!get_prom(link)) {
367 printk(KERN_NOTICE "axnet_cs: this is not an AX88190 card!\n");
368 printk(KERN_NOTICE "axnet_cs: use pcnet_cs instead.\n");
369 goto failed;
370 }
371
372 ei_status.name = "AX88190";
373 ei_status.word16 = 1;
374 ei_status.tx_start_page = AXNET_START_PG;
375 ei_status.rx_start_page = AXNET_START_PG + TX_PAGES;
376 ei_status.stop_page = AXNET_STOP_PG;
377 ei_status.reset_8390 = &axnet_reset_8390;
378 ei_status.get_8390_hdr = &get_8390_hdr;
379 ei_status.block_input = &block_input;
380 ei_status.block_output = &block_output;
381
382 if (inb(dev->base_addr + AXNET_TEST) != 0)
383 info->flags |= IS_AX88790;
384 else
385 info->flags |= IS_AX88190;
386
387 if (info->flags & IS_AX88790)
388 outb(0x10, dev->base_addr + AXNET_GPIO); /* select Internal PHY */
389
390 for (i = 0; i < 32; i++) {
391 j = mdio_read(dev->base_addr + AXNET_MII_EEP, i, 1);
392 j2 = mdio_read(dev->base_addr + AXNET_MII_EEP, i, 2);
393 if (j == j2) continue;
394 if ((j != 0) && (j != 0xffff)) break;
395 }
396
397 /* Maybe PHY is in power down mode. (PPD_SET = 1)
398 Bit 2 of CCSR is active low. */
399 if (i == 32) {
400 conf_reg_t reg = { 0, CS_WRITE, CISREG_CCSR, 0x04 };
401 pcmcia_access_configuration_register(link, &reg);
402 for (i = 0; i < 32; i++) {
403 j = mdio_read(dev->base_addr + AXNET_MII_EEP, i, 1);
404 j2 = mdio_read(dev->base_addr + AXNET_MII_EEP, i, 2);
405 if (j == j2) continue;
406 if ((j != 0) && (j != 0xffff)) break;
407 }
408 }
409
410 info->phy_id = (i < 32) ? i : -1;
411 link->dev_node = &info->node;
412 SET_NETDEV_DEV(dev, &handle_to_dev(link));
413
414 if (register_netdev(dev) != 0) {
415 printk(KERN_NOTICE "axnet_cs: register_netdev() failed\n");
416 link->dev_node = NULL;
417 goto failed;
418 }
419
420 strcpy(info->node.dev_name, dev->name);
421
422 printk(KERN_INFO "%s: Asix AX88%d90: io %#3lx, irq %d, "
423 "hw_addr %pM\n",
424 dev->name, ((info->flags & IS_AX88790) ? 7 : 1),
425 dev->base_addr, dev->irq,
426 dev->dev_addr);
427 if (info->phy_id != -1) {
428 DEBUG(0, " MII transceiver at index %d, status %x.\n", info->phy_id, j);
429 } else {
430 printk(KERN_NOTICE " No MII transceivers found!\n");
431 }
432 return 0;
433
434 cs_failed:
435 cs_error(link, last_fn, last_ret);
436 failed:
437 axnet_release(link);
438 return -ENODEV;
439 } /* axnet_config */
440
441 /*======================================================================
442
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.
446
447 ======================================================================*/
448
449 static void axnet_release(struct pcmcia_device *link)
450 {
451 pcmcia_disable_device(link);
452 }
453
454 static int axnet_suspend(struct pcmcia_device *link)
455 {
456 struct net_device *dev = link->priv;
457
458 if (link->open)
459 netif_device_detach(dev);
460
461 return 0;
462 }
463
464 static int axnet_resume(struct pcmcia_device *link)
465 {
466 struct net_device *dev = link->priv;
467
468 if (link->open) {
469 axnet_reset_8390(dev);
470 AX88190_init(dev, 1);
471 netif_device_attach(dev);
472 }
473
474 return 0;
475 }
476
477
478 /*======================================================================
479
480 MII interface support
481
482 ======================================================================*/
483
484 #define MDIO_SHIFT_CLK 0x01
485 #define MDIO_DATA_WRITE0 0x00
486 #define MDIO_DATA_WRITE1 0x08
487 #define MDIO_DATA_READ 0x04
488 #define MDIO_MASK 0x0f
489 #define MDIO_ENB_IN 0x02
490
491 static void mdio_sync(unsigned int addr)
492 {
493 int bits;
494 for (bits = 0; bits < 32; bits++) {
495 outb_p(MDIO_DATA_WRITE1, addr);
496 outb_p(MDIO_DATA_WRITE1 | MDIO_SHIFT_CLK, addr);
497 }
498 }
499
500 static int mdio_read(unsigned int addr, int phy_id, int loc)
501 {
502 u_int cmd = (0xf6<<10)|(phy_id<<5)|loc;
503 int i, retval = 0;
504
505 mdio_sync(addr);
506 for (i = 14; i >= 0; i--) {
507 int dat = (cmd&(1<<i)) ? MDIO_DATA_WRITE1 : MDIO_DATA_WRITE0;
508 outb_p(dat, addr);
509 outb_p(dat | MDIO_SHIFT_CLK, addr);
510 }
511 for (i = 19; i > 0; i--) {
512 outb_p(MDIO_ENB_IN, addr);
513 retval = (retval << 1) | ((inb_p(addr) & MDIO_DATA_READ) != 0);
514 outb_p(MDIO_ENB_IN | MDIO_SHIFT_CLK, addr);
515 }
516 return (retval>>1) & 0xffff;
517 }
518
519 static void mdio_write(unsigned int addr, int phy_id, int loc, int value)
520 {
521 u_int cmd = (0x05<<28)|(phy_id<<23)|(loc<<18)|(1<<17)|value;
522 int i;
523
524 mdio_sync(addr);
525 for (i = 31; i >= 0; i--) {
526 int dat = (cmd&(1<<i)) ? MDIO_DATA_WRITE1 : MDIO_DATA_WRITE0;
527 outb_p(dat, addr);
528 outb_p(dat | MDIO_SHIFT_CLK, addr);
529 }
530 for (i = 1; i >= 0; i--) {
531 outb_p(MDIO_ENB_IN, addr);
532 outb_p(MDIO_ENB_IN | MDIO_SHIFT_CLK, addr);
533 }
534 }
535
536 /*====================================================================*/
537
538 static int axnet_open(struct net_device *dev)
539 {
540 int ret;
541 axnet_dev_t *info = PRIV(dev);
542 struct pcmcia_device *link = info->p_dev;
543 unsigned int nic_base = dev->base_addr;
544
545 DEBUG(2, "axnet_open('%s')\n", dev->name);
546
547 if (!pcmcia_dev_present(link))
548 return -ENODEV;
549
550 outb_p(0xFF, nic_base + EN0_ISR); /* Clear bogus intr. */
551 ret = request_irq(dev->irq, ei_irq_wrapper, IRQF_SHARED, "axnet_cs", dev);
552 if (ret)
553 return ret;
554
555 link->open++;
556
557 info->link_status = 0x00;
558 init_timer(&info->watchdog);
559 info->watchdog.function = &ei_watchdog;
560 info->watchdog.data = (u_long)dev;
561 info->watchdog.expires = jiffies + HZ;
562 add_timer(&info->watchdog);
563
564 return ax_open(dev);
565 } /* axnet_open */
566
567 /*====================================================================*/
568
569 static int axnet_close(struct net_device *dev)
570 {
571 axnet_dev_t *info = PRIV(dev);
572 struct pcmcia_device *link = info->p_dev;
573
574 DEBUG(2, "axnet_close('%s')\n", dev->name);
575
576 ax_close(dev);
577 free_irq(dev->irq, dev);
578
579 link->open--;
580 netif_stop_queue(dev);
581 del_timer_sync(&info->watchdog);
582
583 return 0;
584 } /* axnet_close */
585
586 /*======================================================================
587
588 Hard reset the card. This used to pause for the same period that
589 a 8390 reset command required, but that shouldn't be necessary.
590
591 ======================================================================*/
592
593 static void axnet_reset_8390(struct net_device *dev)
594 {
595 unsigned int nic_base = dev->base_addr;
596 int i;
597
598 ei_status.txing = ei_status.dmaing = 0;
599
600 outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, nic_base + E8390_CMD);
601
602 outb(inb(nic_base + AXNET_RESET), nic_base + AXNET_RESET);
603
604 for (i = 0; i < 100; i++) {
605 if ((inb_p(nic_base+EN0_ISR) & ENISR_RESET) != 0)
606 break;
607 udelay(100);
608 }
609 outb_p(ENISR_RESET, nic_base + EN0_ISR); /* Ack intr. */
610
611 if (i == 100)
612 printk(KERN_ERR "%s: axnet_reset_8390() did not complete.\n",
613 dev->name);
614
615 } /* axnet_reset_8390 */
616
617 /*====================================================================*/
618
619 static irqreturn_t ei_irq_wrapper(int irq, void *dev_id)
620 {
621 struct net_device *dev = dev_id;
622 PRIV(dev)->stale = 0;
623 return ax_interrupt(irq, dev_id);
624 }
625
626 static void ei_watchdog(u_long arg)
627 {
628 struct net_device *dev = (struct net_device *)(arg);
629 axnet_dev_t *info = PRIV(dev);
630 unsigned int nic_base = dev->base_addr;
631 unsigned int mii_addr = nic_base + AXNET_MII_EEP;
632 u_short link;
633
634 if (!netif_device_present(dev)) goto reschedule;
635
636 /* Check for pending interrupt with expired latency timer: with
637 this, we can limp along even if the interrupt is blocked */
638 if (info->stale++ && (inb_p(nic_base + EN0_ISR) & ENISR_ALL)) {
639 if (!info->fast_poll)
640 printk(KERN_INFO "%s: interrupt(s) dropped!\n", dev->name);
641 ei_irq_wrapper(dev->irq, dev);
642 info->fast_poll = HZ;
643 }
644 if (info->fast_poll) {
645 info->fast_poll--;
646 info->watchdog.expires = jiffies + 1;
647 add_timer(&info->watchdog);
648 return;
649 }
650
651 if (info->phy_id < 0)
652 goto reschedule;
653 link = mdio_read(mii_addr, info->phy_id, 1);
654 if (!link || (link == 0xffff)) {
655 printk(KERN_INFO "%s: MII is missing!\n", dev->name);
656 info->phy_id = -1;
657 goto reschedule;
658 }
659
660 link &= 0x0004;
661 if (link != info->link_status) {
662 u_short p = mdio_read(mii_addr, info->phy_id, 5);
663 printk(KERN_INFO "%s: %s link beat\n", dev->name,
664 (link) ? "found" : "lost");
665 if (link) {
666 info->duplex_flag = (p & 0x0140) ? 0x80 : 0x00;
667 if (p)
668 printk(KERN_INFO "%s: autonegotiation complete: "
669 "%sbaseT-%cD selected\n", dev->name,
670 ((p & 0x0180) ? "100" : "10"),
671 ((p & 0x0140) ? 'F' : 'H'));
672 else
673 printk(KERN_INFO "%s: link partner did not autonegotiate\n",
674 dev->name);
675 AX88190_init(dev, 1);
676 }
677 info->link_status = link;
678 }
679
680 reschedule:
681 info->watchdog.expires = jiffies + HZ;
682 add_timer(&info->watchdog);
683 }
684
685 static void netdev_get_drvinfo(struct net_device *dev,
686 struct ethtool_drvinfo *info)
687 {
688 strcpy(info->driver, "axnet_cs");
689 }
690
691 static const struct ethtool_ops netdev_ethtool_ops = {
692 .get_drvinfo = netdev_get_drvinfo,
693 };
694
695 /*====================================================================*/
696
697 static int axnet_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
698 {
699 axnet_dev_t *info = PRIV(dev);
700 u16 *data = (u16 *)&rq->ifr_ifru;
701 unsigned int mii_addr = dev->base_addr + AXNET_MII_EEP;
702 switch (cmd) {
703 case SIOCGMIIPHY:
704 data[0] = info->phy_id;
705 case SIOCGMIIREG: /* Read MII PHY register. */
706 data[3] = mdio_read(mii_addr, data[0], data[1] & 0x1f);
707 return 0;
708 case SIOCSMIIREG: /* Write MII PHY register. */
709 if (!capable(CAP_NET_ADMIN))
710 return -EPERM;
711 mdio_write(mii_addr, data[0], data[1] & 0x1f, data[2]);
712 return 0;
713 }
714 return -EOPNOTSUPP;
715 }
716
717 /*====================================================================*/
718
719 static void get_8390_hdr(struct net_device *dev,
720 struct e8390_pkt_hdr *hdr,
721 int ring_page)
722 {
723 unsigned int nic_base = dev->base_addr;
724
725 outb_p(0, nic_base + EN0_RSARLO); /* On page boundary */
726 outb_p(ring_page, nic_base + EN0_RSARHI);
727 outb_p(E8390_RREAD+E8390_START, nic_base + AXNET_CMD);
728
729 insw(nic_base + AXNET_DATAPORT, hdr,
730 sizeof(struct e8390_pkt_hdr)>>1);
731 /* Fix for big endian systems */
732 hdr->count = le16_to_cpu(hdr->count);
733
734 }
735
736 /*====================================================================*/
737
738 static void block_input(struct net_device *dev, int count,
739 struct sk_buff *skb, int ring_offset)
740 {
741 unsigned int nic_base = dev->base_addr;
742 int xfer_count = count;
743 char *buf = skb->data;
744
745 #ifdef PCMCIA_DEBUG
746 if ((ei_debug > 4) && (count != 4))
747 printk(KERN_DEBUG "%s: [bi=%d]\n", dev->name, count+4);
748 #endif
749 outb_p(ring_offset & 0xff, nic_base + EN0_RSARLO);
750 outb_p(ring_offset >> 8, nic_base + EN0_RSARHI);
751 outb_p(E8390_RREAD+E8390_START, nic_base + AXNET_CMD);
752
753 insw(nic_base + AXNET_DATAPORT,buf,count>>1);
754 if (count & 0x01)
755 buf[count-1] = inb(nic_base + AXNET_DATAPORT), xfer_count++;
756
757 }
758
759 /*====================================================================*/
760
761 static void block_output(struct net_device *dev, int count,
762 const u_char *buf, const int start_page)
763 {
764 unsigned int nic_base = dev->base_addr;
765
766 #ifdef PCMCIA_DEBUG
767 if (ei_debug > 4)
768 printk(KERN_DEBUG "%s: [bo=%d]\n", dev->name, count);
769 #endif
770
771 /* Round the count up for word writes. Do we need to do this?
772 What effect will an odd byte count have on the 8390?
773 I should check someday. */
774 if (count & 0x01)
775 count++;
776
777 outb_p(0x00, nic_base + EN0_RSARLO);
778 outb_p(start_page, nic_base + EN0_RSARHI);
779 outb_p(E8390_RWRITE+E8390_START, nic_base + AXNET_CMD);
780 outsw(nic_base + AXNET_DATAPORT, buf, count>>1);
781 }
782
783 static struct pcmcia_device_id axnet_ids[] = {
784 PCMCIA_PFC_DEVICE_MANF_CARD(0, 0x016c, 0x0081),
785 PCMCIA_DEVICE_MANF_CARD(0x018a, 0x0301),
786 PCMCIA_DEVICE_MANF_CARD(0x026f, 0x0301),
787 PCMCIA_DEVICE_MANF_CARD(0x026f, 0x0303),
788 PCMCIA_DEVICE_MANF_CARD(0x026f, 0x0309),
789 PCMCIA_DEVICE_MANF_CARD(0x0274, 0x1106),
790 PCMCIA_DEVICE_MANF_CARD(0x8a01, 0xc1ab),
791 PCMCIA_DEVICE_MANF_CARD(0x021b, 0x0202),
792 PCMCIA_DEVICE_MANF_CARD(0xffff, 0x1090),
793 PCMCIA_DEVICE_PROD_ID12("AmbiCom,Inc.", "Fast Ethernet PC Card(AMB8110)", 0x49b020a7, 0x119cc9fc),
794 PCMCIA_DEVICE_PROD_ID124("Fast Ethernet", "16-bit PC Card", "AX88190", 0xb4be14e3, 0x9a12eb6a, 0xab9be5ef),
795 PCMCIA_DEVICE_PROD_ID12("ASIX", "AX88190", 0x0959823b, 0xab9be5ef),
796 PCMCIA_DEVICE_PROD_ID12("Billionton", "LNA-100B", 0x552ab682, 0xbc3b87e1),
797 PCMCIA_DEVICE_PROD_ID12("CHEETAH ETHERCARD", "EN2228", 0x00fa7bc8, 0x00e990cc),
798 PCMCIA_DEVICE_PROD_ID12("CNet", "CNF301", 0xbc477dde, 0x78c5f40b),
799 PCMCIA_DEVICE_PROD_ID12("corega K.K.", "corega FEther PCC-TXD", 0x5261440f, 0x436768c5),
800 PCMCIA_DEVICE_PROD_ID12("corega K.K.", "corega FEtherII PCC-TXD", 0x5261440f, 0x730df72e),
801 PCMCIA_DEVICE_PROD_ID12("Dynalink", "L100C16", 0x55632fd5, 0x66bc2a90),
802 PCMCIA_DEVICE_PROD_ID12("IO DATA", "ETXPCM", 0x547e66dc, 0x233adac2),
803 PCMCIA_DEVICE_PROD_ID12("Linksys", "EtherFast 10/100 PC Card (PCMPC100 V3)", 0x0733cc81, 0x232019a8),
804 PCMCIA_DEVICE_PROD_ID12("MELCO", "LPC3-TX", 0x481e0094, 0xf91af609),
805 PCMCIA_DEVICE_PROD_ID12("NETGEAR", "FA411", 0x9aa79dc3, 0x40fad875),
806 PCMCIA_DEVICE_PROD_ID12("PCMCIA", "100BASE", 0x281f1c5d, 0x7c2add04),
807 PCMCIA_DEVICE_PROD_ID12("PCMCIA", "FastEtherCard", 0x281f1c5d, 0x7ef26116),
808 PCMCIA_DEVICE_PROD_ID12("PCMCIA", "FEP501", 0x281f1c5d, 0x2e272058),
809 PCMCIA_DEVICE_PROD_ID14("Network Everywhere", "AX88190", 0x820a67b6, 0xab9be5ef),
810 PCMCIA_DEVICE_NULL,
811 };
812 MODULE_DEVICE_TABLE(pcmcia, axnet_ids);
813
814 static struct pcmcia_driver axnet_cs_driver = {
815 .owner = THIS_MODULE,
816 .drv = {
817 .name = "axnet_cs",
818 },
819 .probe = axnet_probe,
820 .remove = axnet_detach,
821 .id_table = axnet_ids,
822 .suspend = axnet_suspend,
823 .resume = axnet_resume,
824 };
825
826 static int __init init_axnet_cs(void)
827 {
828 return pcmcia_register_driver(&axnet_cs_driver);
829 }
830
831 static void __exit exit_axnet_cs(void)
832 {
833 pcmcia_unregister_driver(&axnet_cs_driver);
834 }
835
836 module_init(init_axnet_cs);
837 module_exit(exit_axnet_cs);
838
839 /*====================================================================*/
840
841 /* 8390.c: A general NS8390 ethernet driver core for linux. */
842 /*
843 Written 1992-94 by Donald Becker.
844
845 Copyright 1993 United States Government as represented by the
846 Director, National Security Agency.
847
848 This software may be used and distributed according to the terms
849 of the GNU General Public License, incorporated herein by reference.
850
851 The author may be reached as becker@scyld.com, or C/O
852 Scyld Computing Corporation
853 410 Severn Ave., Suite 210
854 Annapolis MD 21403
855
856 This is the chip-specific code for many 8390-based ethernet adaptors.
857 This is not a complete driver, it must be combined with board-specific
858 code such as ne.c, wd.c, 3c503.c, etc.
859
860 Seeing how at least eight drivers use this code, (not counting the
861 PCMCIA ones either) it is easy to break some card by what seems like
862 a simple innocent change. Please contact me or Donald if you think
863 you have found something that needs changing. -- PG
864
865 Changelog:
866
867 Paul Gortmaker : remove set_bit lock, other cleanups.
868 Paul Gortmaker : add ei_get_8390_hdr() so we can pass skb's to
869 ei_block_input() for eth_io_copy_and_sum().
870 Paul Gortmaker : exchange static int ei_pingpong for a #define,
871 also add better Tx error handling.
872 Paul Gortmaker : rewrite Rx overrun handling as per NS specs.
873 Alexey Kuznetsov : use the 8390's six bit hash multicast filter.
874 Paul Gortmaker : tweak ANK's above multicast changes a bit.
875 Paul Gortmaker : update packet statistics for v2.1.x
876 Alan Cox : support arbitary stupid port mappings on the
877 68K Macintosh. Support >16bit I/O spaces
878 Paul Gortmaker : add kmod support for auto-loading of the 8390
879 module by all drivers that require it.
880 Alan Cox : Spinlocking work, added 'BUG_83C690'
881 Paul Gortmaker : Separate out Tx timeout code from Tx path.
882
883 Sources:
884 The National Semiconductor LAN Databook, and the 3Com 3c503 databook.
885
886 */
887
888 static const char version_8390[] = KERN_INFO \
889 "8390.c:v1.10cvs 9/23/94 Donald Becker (becker@scyld.com)\n";
890
891 #include <linux/bitops.h>
892 #include <asm/irq.h>
893 #include <linux/fcntl.h>
894 #include <linux/in.h>
895 #include <linux/interrupt.h>
896
897 #define BUG_83C690
898
899 /* These are the operational function interfaces to board-specific
900 routines.
901 void reset_8390(struct net_device *dev)
902 Resets the board associated with DEV, including a hardware reset of
903 the 8390. This is only called when there is a transmit timeout, and
904 it is always followed by 8390_init().
905 void block_output(struct net_device *dev, int count, const unsigned char *buf,
906 int start_page)
907 Write the COUNT bytes of BUF to the packet buffer at START_PAGE. The
908 "page" value uses the 8390's 256-byte pages.
909 void get_8390_hdr(struct net_device *dev, struct e8390_hdr *hdr, int ring_page)
910 Read the 4 byte, page aligned 8390 header. *If* there is a
911 subsequent read, it will be of the rest of the packet.
912 void block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset)
913 Read COUNT bytes from the packet buffer into the skb data area. Start
914 reading from RING_OFFSET, the address as the 8390 sees it. This will always
915 follow the read of the 8390 header.
916 */
917 #define ei_reset_8390 (ei_local->reset_8390)
918 #define ei_block_output (ei_local->block_output)
919 #define ei_block_input (ei_local->block_input)
920 #define ei_get_8390_hdr (ei_local->get_8390_hdr)
921
922 /* use 0 for production, 1 for verification, >2 for debug */
923 #ifndef ei_debug
924 int ei_debug = 1;
925 #endif
926
927 /* Index to functions. */
928 static void ei_tx_intr(struct net_device *dev);
929 static void ei_tx_err(struct net_device *dev);
930 static void ei_receive(struct net_device *dev);
931 static void ei_rx_overrun(struct net_device *dev);
932
933 /* Routines generic to NS8390-based boards. */
934 static void NS8390_trigger_send(struct net_device *dev, unsigned int length,
935 int start_page);
936 static void do_set_multicast_list(struct net_device *dev);
937
938 /*
939 * SMP and the 8390 setup.
940 *
941 * The 8390 isnt exactly designed to be multithreaded on RX/TX. There is
942 * a page register that controls bank and packet buffer access. We guard
943 * this with ei_local->page_lock. Nobody should assume or set the page other
944 * than zero when the lock is not held. Lock holders must restore page 0
945 * before unlocking. Even pure readers must take the lock to protect in
946 * page 0.
947 *
948 * To make life difficult the chip can also be very slow. We therefore can't
949 * just use spinlocks. For the longer lockups we disable the irq the device
950 * sits on and hold the lock. We must hold the lock because there is a dual
951 * processor case other than interrupts (get stats/set multicast list in
952 * parallel with each other and transmit).
953 *
954 * Note: in theory we can just disable the irq on the card _but_ there is
955 * a latency on SMP irq delivery. So we can easily go "disable irq" "sync irqs"
956 * enter lock, take the queued irq. So we waddle instead of flying.
957 *
958 * Finally by special arrangement for the purpose of being generally
959 * annoying the transmit function is called bh atomic. That places
960 * restrictions on the user context callers as disable_irq won't save
961 * them.
962 */
963
964 /**
965 * ax_open - Open/initialize the board.
966 * @dev: network device to initialize
967 *
968 * This routine goes all-out, setting everything
969 * up anew at each open, even though many of these registers should only
970 * need to be set once at boot.
971 */
972 static int ax_open(struct net_device *dev)
973 {
974 unsigned long flags;
975 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
976
977 /*
978 * Grab the page lock so we own the register set, then call
979 * the init function.
980 */
981
982 spin_lock_irqsave(&ei_local->page_lock, flags);
983 AX88190_init(dev, 1);
984 /* Set the flag before we drop the lock, That way the IRQ arrives
985 after its set and we get no silly warnings */
986 netif_start_queue(dev);
987 spin_unlock_irqrestore(&ei_local->page_lock, flags);
988 ei_local->irqlock = 0;
989 return 0;
990 }
991
992 #define dev_lock(dev) (((struct ei_device *)netdev_priv(dev))->page_lock)
993
994 /**
995 * ax_close - shut down network device
996 * @dev: network device to close
997 *
998 * Opposite of ax_open(). Only used when "ifconfig <devname> down" is done.
999 */
1000 static int ax_close(struct net_device *dev)
1001 {
1002 unsigned long flags;
1003
1004 /*
1005 * Hold the page lock during close
1006 */
1007
1008 spin_lock_irqsave(&dev_lock(dev), flags);
1009 AX88190_init(dev, 0);
1010 spin_unlock_irqrestore(&dev_lock(dev), flags);
1011 netif_stop_queue(dev);
1012 return 0;
1013 }
1014
1015 /**
1016 * axnet_tx_timeout - handle transmit time out condition
1017 * @dev: network device which has apparently fallen asleep
1018 *
1019 * Called by kernel when device never acknowledges a transmit has
1020 * completed (or failed) - i.e. never posted a Tx related interrupt.
1021 */
1022
1023 static void axnet_tx_timeout(struct net_device *dev)
1024 {
1025 long e8390_base = dev->base_addr;
1026 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1027 int txsr, isr, tickssofar = jiffies - dev->trans_start;
1028 unsigned long flags;
1029
1030 dev->stats.tx_errors++;
1031
1032 spin_lock_irqsave(&ei_local->page_lock, flags);
1033 txsr = inb(e8390_base+EN0_TSR);
1034 isr = inb(e8390_base+EN0_ISR);
1035 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1036
1037 printk(KERN_DEBUG "%s: Tx timed out, %s TSR=%#2x, ISR=%#2x, t=%d.\n",
1038 dev->name, (txsr & ENTSR_ABT) ? "excess collisions." :
1039 (isr) ? "lost interrupt?" : "cable problem?", txsr, isr, tickssofar);
1040
1041 if (!isr && !dev->stats.tx_packets)
1042 {
1043 /* The 8390 probably hasn't gotten on the cable yet. */
1044 ei_local->interface_num ^= 1; /* Try a different xcvr. */
1045 }
1046
1047 /* Ugly but a reset can be slow, yet must be protected */
1048
1049 spin_lock_irqsave(&ei_local->page_lock, flags);
1050
1051 /* Try to restart the card. Perhaps the user has fixed something. */
1052 ei_reset_8390(dev);
1053 AX88190_init(dev, 1);
1054
1055 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1056 netif_wake_queue(dev);
1057 }
1058
1059 /**
1060 * axnet_start_xmit - begin packet transmission
1061 * @skb: packet to be sent
1062 * @dev: network device to which packet is sent
1063 *
1064 * Sends a packet to an 8390 network device.
1065 */
1066
1067 static netdev_tx_t axnet_start_xmit(struct sk_buff *skb,
1068 struct net_device *dev)
1069 {
1070 long e8390_base = dev->base_addr;
1071 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1072 int length, send_length, output_page;
1073 unsigned long flags;
1074 u8 packet[ETH_ZLEN];
1075
1076 netif_stop_queue(dev);
1077
1078 length = skb->len;
1079
1080 /* Mask interrupts from the ethercard.
1081 SMP: We have to grab the lock here otherwise the IRQ handler
1082 on another CPU can flip window and race the IRQ mask set. We end
1083 up trashing the mcast filter not disabling irqs if we don't lock */
1084
1085 spin_lock_irqsave(&ei_local->page_lock, flags);
1086 outb_p(0x00, e8390_base + EN0_IMR);
1087 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1088
1089 /*
1090 * Slow phase with lock held.
1091 */
1092
1093 spin_lock_irqsave(&ei_local->page_lock, flags);
1094
1095 ei_local->irqlock = 1;
1096
1097 send_length = max(length, ETH_ZLEN);
1098
1099 /*
1100 * We have two Tx slots available for use. Find the first free
1101 * slot, and then perform some sanity checks. With two Tx bufs,
1102 * you get very close to transmitting back-to-back packets. With
1103 * only one Tx buf, the transmitter sits idle while you reload the
1104 * card, leaving a substantial gap between each transmitted packet.
1105 */
1106
1107 if (ei_local->tx1 == 0)
1108 {
1109 output_page = ei_local->tx_start_page;
1110 ei_local->tx1 = send_length;
1111 if (ei_debug && ei_local->tx2 > 0)
1112 printk(KERN_DEBUG "%s: idle transmitter tx2=%d, lasttx=%d, txing=%d.\n",
1113 dev->name, ei_local->tx2, ei_local->lasttx, ei_local->txing);
1114 }
1115 else if (ei_local->tx2 == 0)
1116 {
1117 output_page = ei_local->tx_start_page + TX_PAGES/2;
1118 ei_local->tx2 = send_length;
1119 if (ei_debug && ei_local->tx1 > 0)
1120 printk(KERN_DEBUG "%s: idle transmitter, tx1=%d, lasttx=%d, txing=%d.\n",
1121 dev->name, ei_local->tx1, ei_local->lasttx, ei_local->txing);
1122 }
1123 else
1124 { /* We should never get here. */
1125 if (ei_debug)
1126 printk(KERN_DEBUG "%s: No Tx buffers free! tx1=%d tx2=%d last=%d\n",
1127 dev->name, ei_local->tx1, ei_local->tx2, ei_local->lasttx);
1128 ei_local->irqlock = 0;
1129 netif_stop_queue(dev);
1130 outb_p(ENISR_ALL, e8390_base + EN0_IMR);
1131 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1132 dev->stats.tx_errors++;
1133 return NETDEV_TX_BUSY;
1134 }
1135
1136 /*
1137 * Okay, now upload the packet and trigger a send if the transmitter
1138 * isn't already sending. If it is busy, the interrupt handler will
1139 * trigger the send later, upon receiving a Tx done interrupt.
1140 */
1141
1142 if (length == skb->len)
1143 ei_block_output(dev, length, skb->data, output_page);
1144 else {
1145 memset(packet, 0, ETH_ZLEN);
1146 skb_copy_from_linear_data(skb, packet, skb->len);
1147 ei_block_output(dev, length, packet, output_page);
1148 }
1149
1150 if (! ei_local->txing)
1151 {
1152 ei_local->txing = 1;
1153 NS8390_trigger_send(dev, send_length, output_page);
1154 dev->trans_start = jiffies;
1155 if (output_page == ei_local->tx_start_page)
1156 {
1157 ei_local->tx1 = -1;
1158 ei_local->lasttx = -1;
1159 }
1160 else
1161 {
1162 ei_local->tx2 = -1;
1163 ei_local->lasttx = -2;
1164 }
1165 }
1166 else ei_local->txqueue++;
1167
1168 if (ei_local->tx1 && ei_local->tx2)
1169 netif_stop_queue(dev);
1170 else
1171 netif_start_queue(dev);
1172
1173 /* Turn 8390 interrupts back on. */
1174 ei_local->irqlock = 0;
1175 outb_p(ENISR_ALL, e8390_base + EN0_IMR);
1176
1177 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1178
1179 dev_kfree_skb (skb);
1180 dev->stats.tx_bytes += send_length;
1181
1182 return NETDEV_TX_OK;
1183 }
1184
1185 /**
1186 * ax_interrupt - handle the interrupts from an 8390
1187 * @irq: interrupt number
1188 * @dev_id: a pointer to the net_device
1189 *
1190 * Handle the ether interface interrupts. We pull packets from
1191 * the 8390 via the card specific functions and fire them at the networking
1192 * stack. We also handle transmit completions and wake the transmit path if
1193 * necessary. We also update the counters and do other housekeeping as
1194 * needed.
1195 */
1196
1197 static irqreturn_t ax_interrupt(int irq, void *dev_id)
1198 {
1199 struct net_device *dev = dev_id;
1200 long e8390_base;
1201 int interrupts, nr_serviced = 0, i;
1202 struct ei_device *ei_local;
1203 int handled = 0;
1204
1205 e8390_base = dev->base_addr;
1206 ei_local = netdev_priv(dev);
1207
1208 /*
1209 * Protect the irq test too.
1210 */
1211
1212 spin_lock(&ei_local->page_lock);
1213
1214 if (ei_local->irqlock)
1215 {
1216 #if 1 /* This might just be an interrupt for a PCI device sharing this line */
1217 /* The "irqlock" check is only for testing. */
1218 printk(ei_local->irqlock
1219 ? "%s: Interrupted while interrupts are masked! isr=%#2x imr=%#2x.\n"
1220 : "%s: Reentering the interrupt handler! isr=%#2x imr=%#2x.\n",
1221 dev->name, inb_p(e8390_base + EN0_ISR),
1222 inb_p(e8390_base + EN0_IMR));
1223 #endif
1224 spin_unlock(&ei_local->page_lock);
1225 return IRQ_NONE;
1226 }
1227
1228 if (ei_debug > 3)
1229 printk(KERN_DEBUG "%s: interrupt(isr=%#2.2x).\n", dev->name,
1230 inb_p(e8390_base + EN0_ISR));
1231
1232 outb_p(0x00, e8390_base + EN0_ISR);
1233 ei_local->irqlock = 1;
1234
1235 /* !!Assumption!! -- we stay in page 0. Don't break this. */
1236 while ((interrupts = inb_p(e8390_base + EN0_ISR)) != 0
1237 && ++nr_serviced < MAX_SERVICE)
1238 {
1239 if (!netif_running(dev) || (interrupts == 0xff)) {
1240 if (ei_debug > 1)
1241 printk(KERN_WARNING "%s: interrupt from stopped card\n", dev->name);
1242 outb_p(interrupts, e8390_base + EN0_ISR);
1243 interrupts = 0;
1244 break;
1245 }
1246 handled = 1;
1247
1248 /* AX88190 bug fix. */
1249 outb_p(interrupts, e8390_base + EN0_ISR);
1250 for (i = 0; i < 10; i++) {
1251 if (!(inb(e8390_base + EN0_ISR) & interrupts))
1252 break;
1253 outb_p(0, e8390_base + EN0_ISR);
1254 outb_p(interrupts, e8390_base + EN0_ISR);
1255 }
1256 if (interrupts & ENISR_OVER)
1257 ei_rx_overrun(dev);
1258 else if (interrupts & (ENISR_RX+ENISR_RX_ERR))
1259 {
1260 /* Got a good (?) packet. */
1261 ei_receive(dev);
1262 }
1263 /* Push the next to-transmit packet through. */
1264 if (interrupts & ENISR_TX)
1265 ei_tx_intr(dev);
1266 else if (interrupts & ENISR_TX_ERR)
1267 ei_tx_err(dev);
1268
1269 if (interrupts & ENISR_COUNTERS)
1270 {
1271 dev->stats.rx_frame_errors += inb_p(e8390_base + EN0_COUNTER0);
1272 dev->stats.rx_crc_errors += inb_p(e8390_base + EN0_COUNTER1);
1273 dev->stats.rx_missed_errors+= inb_p(e8390_base + EN0_COUNTER2);
1274 }
1275 }
1276
1277 if (interrupts && ei_debug > 3)
1278 {
1279 handled = 1;
1280 if (nr_serviced >= MAX_SERVICE)
1281 {
1282 /* 0xFF is valid for a card removal */
1283 if(interrupts!=0xFF)
1284 printk(KERN_WARNING "%s: Too much work at interrupt, status %#2.2x\n",
1285 dev->name, interrupts);
1286 outb_p(ENISR_ALL, e8390_base + EN0_ISR); /* Ack. most intrs. */
1287 } else {
1288 printk(KERN_WARNING "%s: unknown interrupt %#2x\n", dev->name, interrupts);
1289 outb_p(0xff, e8390_base + EN0_ISR); /* Ack. all intrs. */
1290 }
1291 }
1292
1293 /* Turn 8390 interrupts back on. */
1294 ei_local->irqlock = 0;
1295 outb_p(ENISR_ALL, e8390_base + EN0_IMR);
1296
1297 spin_unlock(&ei_local->page_lock);
1298 return IRQ_RETVAL(handled);
1299 }
1300
1301 /**
1302 * ei_tx_err - handle transmitter error
1303 * @dev: network device which threw the exception
1304 *
1305 * A transmitter error has happened. Most likely excess collisions (which
1306 * is a fairly normal condition). If the error is one where the Tx will
1307 * have been aborted, we try and send another one right away, instead of
1308 * letting the failed packet sit and collect dust in the Tx buffer. This
1309 * is a much better solution as it avoids kernel based Tx timeouts, and
1310 * an unnecessary card reset.
1311 *
1312 * Called with lock held.
1313 */
1314
1315 static void ei_tx_err(struct net_device *dev)
1316 {
1317 long e8390_base = dev->base_addr;
1318 unsigned char txsr = inb_p(e8390_base+EN0_TSR);
1319 unsigned char tx_was_aborted = txsr & (ENTSR_ABT+ENTSR_FU);
1320
1321 #ifdef VERBOSE_ERROR_DUMP
1322 printk(KERN_DEBUG "%s: transmitter error (%#2x): ", dev->name, txsr);
1323 if (txsr & ENTSR_ABT)
1324 printk("excess-collisions ");
1325 if (txsr & ENTSR_ND)
1326 printk("non-deferral ");
1327 if (txsr & ENTSR_CRS)
1328 printk("lost-carrier ");
1329 if (txsr & ENTSR_FU)
1330 printk("FIFO-underrun ");
1331 if (txsr & ENTSR_CDH)
1332 printk("lost-heartbeat ");
1333 printk("\n");
1334 #endif
1335
1336 if (tx_was_aborted)
1337 ei_tx_intr(dev);
1338 else
1339 {
1340 dev->stats.tx_errors++;
1341 if (txsr & ENTSR_CRS) dev->stats.tx_carrier_errors++;
1342 if (txsr & ENTSR_CDH) dev->stats.tx_heartbeat_errors++;
1343 if (txsr & ENTSR_OWC) dev->stats.tx_window_errors++;
1344 }
1345 }
1346
1347 /**
1348 * ei_tx_intr - transmit interrupt handler
1349 * @dev: network device for which tx intr is handled
1350 *
1351 * We have finished a transmit: check for errors and then trigger the next
1352 * packet to be sent. Called with lock held.
1353 */
1354
1355 static void ei_tx_intr(struct net_device *dev)
1356 {
1357 long e8390_base = dev->base_addr;
1358 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1359 int status = inb(e8390_base + EN0_TSR);
1360
1361 /*
1362 * There are two Tx buffers, see which one finished, and trigger
1363 * the send of another one if it exists.
1364 */
1365 ei_local->txqueue--;
1366
1367 if (ei_local->tx1 < 0)
1368 {
1369 if (ei_local->lasttx != 1 && ei_local->lasttx != -1)
1370 printk(KERN_ERR "%s: bogus last_tx_buffer %d, tx1=%d.\n",
1371 ei_local->name, ei_local->lasttx, ei_local->tx1);
1372 ei_local->tx1 = 0;
1373 if (ei_local->tx2 > 0)
1374 {
1375 ei_local->txing = 1;
1376 NS8390_trigger_send(dev, ei_local->tx2, ei_local->tx_start_page + 6);
1377 dev->trans_start = jiffies;
1378 ei_local->tx2 = -1,
1379 ei_local->lasttx = 2;
1380 }
1381 else ei_local->lasttx = 20, ei_local->txing = 0;
1382 }
1383 else if (ei_local->tx2 < 0)
1384 {
1385 if (ei_local->lasttx != 2 && ei_local->lasttx != -2)
1386 printk("%s: bogus last_tx_buffer %d, tx2=%d.\n",
1387 ei_local->name, ei_local->lasttx, ei_local->tx2);
1388 ei_local->tx2 = 0;
1389 if (ei_local->tx1 > 0)
1390 {
1391 ei_local->txing = 1;
1392 NS8390_trigger_send(dev, ei_local->tx1, ei_local->tx_start_page);
1393 dev->trans_start = jiffies;
1394 ei_local->tx1 = -1;
1395 ei_local->lasttx = 1;
1396 }
1397 else
1398 ei_local->lasttx = 10, ei_local->txing = 0;
1399 }
1400 // else printk(KERN_WARNING "%s: unexpected TX-done interrupt, lasttx=%d.\n",
1401 // dev->name, ei_local->lasttx);
1402
1403 /* Minimize Tx latency: update the statistics after we restart TXing. */
1404 if (status & ENTSR_COL)
1405 dev->stats.collisions++;
1406 if (status & ENTSR_PTX)
1407 dev->stats.tx_packets++;
1408 else
1409 {
1410 dev->stats.tx_errors++;
1411 if (status & ENTSR_ABT)
1412 {
1413 dev->stats.tx_aborted_errors++;
1414 dev->stats.collisions += 16;
1415 }
1416 if (status & ENTSR_CRS)
1417 dev->stats.tx_carrier_errors++;
1418 if (status & ENTSR_FU)
1419 dev->stats.tx_fifo_errors++;
1420 if (status & ENTSR_CDH)
1421 dev->stats.tx_heartbeat_errors++;
1422 if (status & ENTSR_OWC)
1423 dev->stats.tx_window_errors++;
1424 }
1425 netif_wake_queue(dev);
1426 }
1427
1428 /**
1429 * ei_receive - receive some packets
1430 * @dev: network device with which receive will be run
1431 *
1432 * We have a good packet(s), get it/them out of the buffers.
1433 * Called with lock held.
1434 */
1435
1436 static void ei_receive(struct net_device *dev)
1437 {
1438 long e8390_base = dev->base_addr;
1439 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1440 unsigned char rxing_page, this_frame, next_frame;
1441 unsigned short current_offset;
1442 int rx_pkt_count = 0;
1443 struct e8390_pkt_hdr rx_frame;
1444
1445 while (++rx_pkt_count < 10)
1446 {
1447 int pkt_len, pkt_stat;
1448
1449 /* Get the rx page (incoming packet pointer). */
1450 rxing_page = inb_p(e8390_base + EN1_CURPAG -1);
1451
1452 /* Remove one frame from the ring. Boundary is always a page behind. */
1453 this_frame = inb_p(e8390_base + EN0_BOUNDARY) + 1;
1454 if (this_frame >= ei_local->stop_page)
1455 this_frame = ei_local->rx_start_page;
1456
1457 /* Someday we'll omit the previous, iff we never get this message.
1458 (There is at least one clone claimed to have a problem.)
1459
1460 Keep quiet if it looks like a card removal. One problem here
1461 is that some clones crash in roughly the same way.
1462 */
1463 if (ei_debug > 0 && this_frame != ei_local->current_page && (this_frame!=0x0 || rxing_page!=0xFF))
1464 printk(KERN_ERR "%s: mismatched read page pointers %2x vs %2x.\n",
1465 dev->name, this_frame, ei_local->current_page);
1466
1467 if (this_frame == rxing_page) /* Read all the frames? */
1468 break; /* Done for now */
1469
1470 current_offset = this_frame << 8;
1471 ei_get_8390_hdr(dev, &rx_frame, this_frame);
1472
1473 pkt_len = rx_frame.count - sizeof(struct e8390_pkt_hdr);
1474 pkt_stat = rx_frame.status;
1475
1476 next_frame = this_frame + 1 + ((pkt_len+4)>>8);
1477
1478 if (pkt_len < 60 || pkt_len > 1518)
1479 {
1480 if (ei_debug)
1481 printk(KERN_DEBUG "%s: bogus packet size: %d, status=%#2x nxpg=%#2x.\n",
1482 dev->name, rx_frame.count, rx_frame.status,
1483 rx_frame.next);
1484 dev->stats.rx_errors++;
1485 dev->stats.rx_length_errors++;
1486 }
1487 else if ((pkt_stat & 0x0F) == ENRSR_RXOK)
1488 {
1489 struct sk_buff *skb;
1490
1491 skb = dev_alloc_skb(pkt_len+2);
1492 if (skb == NULL)
1493 {
1494 if (ei_debug > 1)
1495 printk(KERN_DEBUG "%s: Couldn't allocate a sk_buff of size %d.\n",
1496 dev->name, pkt_len);
1497 dev->stats.rx_dropped++;
1498 break;
1499 }
1500 else
1501 {
1502 skb_reserve(skb,2); /* IP headers on 16 byte boundaries */
1503 skb_put(skb, pkt_len); /* Make room */
1504 ei_block_input(dev, pkt_len, skb, current_offset + sizeof(rx_frame));
1505 skb->protocol=eth_type_trans(skb,dev);
1506 netif_rx(skb);
1507 dev->stats.rx_packets++;
1508 dev->stats.rx_bytes += pkt_len;
1509 if (pkt_stat & ENRSR_PHY)
1510 dev->stats.multicast++;
1511 }
1512 }
1513 else
1514 {
1515 if (ei_debug)
1516 printk(KERN_DEBUG "%s: bogus packet: status=%#2x nxpg=%#2x size=%d\n",
1517 dev->name, rx_frame.status, rx_frame.next,
1518 rx_frame.count);
1519 dev->stats.rx_errors++;
1520 /* NB: The NIC counts CRC, frame and missed errors. */
1521 if (pkt_stat & ENRSR_FO)
1522 dev->stats.rx_fifo_errors++;
1523 }
1524 next_frame = rx_frame.next;
1525
1526 /* This _should_ never happen: it's here for avoiding bad clones. */
1527 if (next_frame >= ei_local->stop_page) {
1528 printk("%s: next frame inconsistency, %#2x\n", dev->name,
1529 next_frame);
1530 next_frame = ei_local->rx_start_page;
1531 }
1532 ei_local->current_page = next_frame;
1533 outb_p(next_frame-1, e8390_base+EN0_BOUNDARY);
1534 }
1535
1536 return;
1537 }
1538
1539 /**
1540 * ei_rx_overrun - handle receiver overrun
1541 * @dev: network device which threw exception
1542 *
1543 * We have a receiver overrun: we have to kick the 8390 to get it started
1544 * again. Problem is that you have to kick it exactly as NS prescribes in
1545 * the updated datasheets, or "the NIC may act in an unpredictable manner."
1546 * This includes causing "the NIC to defer indefinitely when it is stopped
1547 * on a busy network." Ugh.
1548 * Called with lock held. Don't call this with the interrupts off or your
1549 * computer will hate you - it takes 10ms or so.
1550 */
1551
1552 static void ei_rx_overrun(struct net_device *dev)
1553 {
1554 axnet_dev_t *info = PRIV(dev);
1555 long e8390_base = dev->base_addr;
1556 unsigned char was_txing, must_resend = 0;
1557
1558 /*
1559 * Record whether a Tx was in progress and then issue the
1560 * stop command.
1561 */
1562 was_txing = inb_p(e8390_base+E8390_CMD) & E8390_TRANS;
1563 outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD);
1564
1565 if (ei_debug > 1)
1566 printk(KERN_DEBUG "%s: Receiver overrun.\n", dev->name);
1567 dev->stats.rx_over_errors++;
1568
1569 /*
1570 * Wait a full Tx time (1.2ms) + some guard time, NS says 1.6ms total.
1571 * Early datasheets said to poll the reset bit, but now they say that
1572 * it "is not a reliable indicator and subsequently should be ignored."
1573 * We wait at least 10ms.
1574 */
1575
1576 mdelay(10);
1577
1578 /*
1579 * Reset RBCR[01] back to zero as per magic incantation.
1580 */
1581 outb_p(0x00, e8390_base+EN0_RCNTLO);
1582 outb_p(0x00, e8390_base+EN0_RCNTHI);
1583
1584 /*
1585 * See if any Tx was interrupted or not. According to NS, this
1586 * step is vital, and skipping it will cause no end of havoc.
1587 */
1588
1589 if (was_txing)
1590 {
1591 unsigned char tx_completed = inb_p(e8390_base+EN0_ISR) & (ENISR_TX+ENISR_TX_ERR);
1592 if (!tx_completed)
1593 must_resend = 1;
1594 }
1595
1596 /*
1597 * Have to enter loopback mode and then restart the NIC before
1598 * you are allowed to slurp packets up off the ring.
1599 */
1600 outb_p(E8390_TXOFF, e8390_base + EN0_TXCR);
1601 outb_p(E8390_NODMA + E8390_PAGE0 + E8390_START, e8390_base + E8390_CMD);
1602
1603 /*
1604 * Clear the Rx ring of all the debris, and ack the interrupt.
1605 */
1606 ei_receive(dev);
1607
1608 /*
1609 * Leave loopback mode, and resend any packet that got stopped.
1610 */
1611 outb_p(E8390_TXCONFIG | info->duplex_flag, e8390_base + EN0_TXCR);
1612 if (must_resend)
1613 outb_p(E8390_NODMA + E8390_PAGE0 + E8390_START + E8390_TRANS, e8390_base + E8390_CMD);
1614 }
1615
1616 /*
1617 * Collect the stats. This is called unlocked and from several contexts.
1618 */
1619
1620 static struct net_device_stats *get_stats(struct net_device *dev)
1621 {
1622 long ioaddr = dev->base_addr;
1623 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1624 unsigned long flags;
1625
1626 /* If the card is stopped, just return the present stats. */
1627 if (!netif_running(dev))
1628 return &dev->stats;
1629
1630 spin_lock_irqsave(&ei_local->page_lock,flags);
1631 /* Read the counter registers, assuming we are in page 0. */
1632 dev->stats.rx_frame_errors += inb_p(ioaddr + EN0_COUNTER0);
1633 dev->stats.rx_crc_errors += inb_p(ioaddr + EN0_COUNTER1);
1634 dev->stats.rx_missed_errors+= inb_p(ioaddr + EN0_COUNTER2);
1635 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1636
1637 return &dev->stats;
1638 }
1639
1640 /*
1641 * Form the 64 bit 8390 multicast table from the linked list of addresses
1642 * associated with this dev structure.
1643 */
1644
1645 static inline void make_mc_bits(u8 *bits, struct net_device *dev)
1646 {
1647 struct dev_mc_list *dmi;
1648 u32 crc;
1649
1650 for (dmi=dev->mc_list; dmi; dmi=dmi->next) {
1651
1652 crc = ether_crc(ETH_ALEN, dmi->dmi_addr);
1653 /*
1654 * The 8390 uses the 6 most significant bits of the
1655 * CRC to index the multicast table.
1656 */
1657 bits[crc>>29] |= (1<<((crc>>26)&7));
1658 }
1659 }
1660
1661 /**
1662 * do_set_multicast_list - set/clear multicast filter
1663 * @dev: net device for which multicast filter is adjusted
1664 *
1665 * Set or clear the multicast filter for this adaptor.
1666 * Must be called with lock held.
1667 */
1668
1669 static void do_set_multicast_list(struct net_device *dev)
1670 {
1671 long e8390_base = dev->base_addr;
1672 int i;
1673 struct ei_device *ei_local = (struct ei_device*)netdev_priv(dev);
1674
1675 if (!(dev->flags&(IFF_PROMISC|IFF_ALLMULTI))) {
1676 memset(ei_local->mcfilter, 0, 8);
1677 if (dev->mc_list)
1678 make_mc_bits(ei_local->mcfilter, dev);
1679 } else {
1680 /* set to accept-all */
1681 memset(ei_local->mcfilter, 0xFF, 8);
1682 }
1683
1684 outb_p(E8390_NODMA + E8390_PAGE1, e8390_base + E8390_CMD);
1685 for(i = 0; i < 8; i++)
1686 {
1687 outb_p(ei_local->mcfilter[i], e8390_base + EN1_MULT_SHIFT(i));
1688 }
1689 outb_p(E8390_NODMA + E8390_PAGE0, e8390_base + E8390_CMD);
1690
1691 if(dev->flags&IFF_PROMISC)
1692 outb_p(E8390_RXCONFIG | 0x58, e8390_base + EN0_RXCR);
1693 else if(dev->flags&IFF_ALLMULTI || dev->mc_list)
1694 outb_p(E8390_RXCONFIG | 0x48, e8390_base + EN0_RXCR);
1695 else
1696 outb_p(E8390_RXCONFIG | 0x40, e8390_base + EN0_RXCR);
1697
1698 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, e8390_base+E8390_CMD);
1699 }
1700
1701 /*
1702 * Called without lock held. This is invoked from user context and may
1703 * be parallel to just about everything else. Its also fairly quick and
1704 * not called too often. Must protect against both bh and irq users
1705 */
1706
1707 static void set_multicast_list(struct net_device *dev)
1708 {
1709 unsigned long flags;
1710
1711 spin_lock_irqsave(&dev_lock(dev), flags);
1712 do_set_multicast_list(dev);
1713 spin_unlock_irqrestore(&dev_lock(dev), flags);
1714 }
1715
1716 /* This page of functions should be 8390 generic */
1717 /* Follow National Semi's recommendations for initializing the "NIC". */
1718
1719 /**
1720 * AX88190_init - initialize 8390 hardware
1721 * @dev: network device to initialize
1722 * @startp: boolean. non-zero value to initiate chip processing
1723 *
1724 * Must be called with lock held.
1725 */
1726
1727 static void AX88190_init(struct net_device *dev, int startp)
1728 {
1729 axnet_dev_t *info = PRIV(dev);
1730 long e8390_base = dev->base_addr;
1731 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1732 int i;
1733 int endcfg = ei_local->word16 ? (0x48 | ENDCFG_WTS) : 0x48;
1734
1735 if(sizeof(struct e8390_pkt_hdr)!=4)
1736 panic("8390.c: header struct mispacked\n");
1737 /* Follow National Semi's recommendations for initing the DP83902. */
1738 outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD); /* 0x21 */
1739 outb_p(endcfg, e8390_base + EN0_DCFG); /* 0x48 or 0x49 */
1740 /* Clear the remote byte count registers. */
1741 outb_p(0x00, e8390_base + EN0_RCNTLO);
1742 outb_p(0x00, e8390_base + EN0_RCNTHI);
1743 /* Set to monitor and loopback mode -- this is vital!. */
1744 outb_p(E8390_RXOFF|0x40, e8390_base + EN0_RXCR); /* 0x60 */
1745 outb_p(E8390_TXOFF, e8390_base + EN0_TXCR); /* 0x02 */
1746 /* Set the transmit page and receive ring. */
1747 outb_p(ei_local->tx_start_page, e8390_base + EN0_TPSR);
1748 ei_local->tx1 = ei_local->tx2 = 0;
1749 outb_p(ei_local->rx_start_page, e8390_base + EN0_STARTPG);
1750 outb_p(ei_local->stop_page-1, e8390_base + EN0_BOUNDARY); /* 3c503 says 0x3f,NS0x26*/
1751 ei_local->current_page = ei_local->rx_start_page; /* assert boundary+1 */
1752 outb_p(ei_local->stop_page, e8390_base + EN0_STOPPG);
1753 /* Clear the pending interrupts and mask. */
1754 outb_p(0xFF, e8390_base + EN0_ISR);
1755 outb_p(0x00, e8390_base + EN0_IMR);
1756
1757 /* Copy the station address into the DS8390 registers. */
1758
1759 outb_p(E8390_NODMA + E8390_PAGE1 + E8390_STOP, e8390_base+E8390_CMD); /* 0x61 */
1760 for(i = 0; i < 6; i++)
1761 {
1762 outb_p(dev->dev_addr[i], e8390_base + EN1_PHYS_SHIFT(i));
1763 if(inb_p(e8390_base + EN1_PHYS_SHIFT(i))!=dev->dev_addr[i])
1764 printk(KERN_ERR "Hw. address read/write mismap %d\n",i);
1765 }
1766
1767 outb_p(ei_local->rx_start_page, e8390_base + EN1_CURPAG);
1768 outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD);
1769
1770 netif_start_queue(dev);
1771 ei_local->tx1 = ei_local->tx2 = 0;
1772 ei_local->txing = 0;
1773
1774 if (info->flags & IS_AX88790) /* select Internal PHY */
1775 outb(0x10, e8390_base + AXNET_GPIO);
1776
1777 if (startp)
1778 {
1779 outb_p(0xff, e8390_base + EN0_ISR);
1780 outb_p(ENISR_ALL, e8390_base + EN0_IMR);
1781 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, e8390_base+E8390_CMD);
1782 outb_p(E8390_TXCONFIG | info->duplex_flag,
1783 e8390_base + EN0_TXCR); /* xmit on. */
1784 /* 3c503 TechMan says rxconfig only after the NIC is started. */
1785 outb_p(E8390_RXCONFIG | 0x40, e8390_base + EN0_RXCR); /* rx on, */
1786 do_set_multicast_list(dev); /* (re)load the mcast table */
1787 }
1788 }
1789
1790 /* Trigger a transmit start, assuming the length is valid.
1791 Always called with the page lock held */
1792
1793 static void NS8390_trigger_send(struct net_device *dev, unsigned int length,
1794 int start_page)
1795 {
1796 long e8390_base = dev->base_addr;
1797 struct ei_device *ei_local __attribute((unused)) = (struct ei_device *) netdev_priv(dev);
1798
1799 if (inb_p(e8390_base) & E8390_TRANS)
1800 {
1801 printk(KERN_WARNING "%s: trigger_send() called with the transmitter busy.\n",
1802 dev->name);
1803 return;
1804 }
1805 outb_p(length & 0xff, e8390_base + EN0_TCNTLO);
1806 outb_p(length >> 8, e8390_base + EN0_TCNTHI);
1807 outb_p(start_page, e8390_base + EN0_TPSR);
1808 outb_p(E8390_NODMA+E8390_TRANS+E8390_START, e8390_base+E8390_CMD);
1809 }
Linux kernel - Deliverables
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