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/crc32.h>
39 #include "../8390.h"
40
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>
47
48 #include <asm/io.h>
49 #include <asm/system.h>
50 #include <asm/byteorder.h>
51 #include <asm/uaccess.h>
52
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 */
59
60 #define AXNET_START_PG 0x40 /* First page of TX buffer */
61 #define AXNET_STOP_PG 0x80 /* Last page +1 of RX ring */
62
63 #define AXNET_RDC_TIMEOUT 0x02 /* Max wait in jiffies for Tx RDC */
64
65 #define IS_AX88190 0x0001
66 #define IS_AX88790 0x0002
67
68 /*====================================================================*/
69
70 /* Module parameters */
71
72 MODULE_AUTHOR("David Hinds <dahinds@users.sourceforge.net>");
73 MODULE_DESCRIPTION("Asix AX88190 PCMCIA ethernet driver");
74 MODULE_LICENSE("GPL");
75
76 #ifdef PCMCIA_DEBUG
77 #define INT_MODULE_PARM(n, v) static int n = v; module_param(n, int, 0)
78
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)";
83 #else
84 #define DEBUG(n, args...)
85 #endif
86
87 /*====================================================================*/
88
89 static int axnet_config(struct pcmcia_device *link);
90 static void axnet_release(struct pcmcia_device *link);
91 static int axnet_open(struct net_device *dev);
92 static int axnet_close(struct net_device *dev);
93 static int axnet_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
94 static const struct ethtool_ops netdev_ethtool_ops;
95 static irqreturn_t ei_irq_wrapper(int irq, void *dev_id);
96 static void ei_watchdog(u_long arg);
97 static void axnet_reset_8390(struct net_device *dev);
98
99 static int mdio_read(unsigned int addr, int phy_id, int loc);
100 static void mdio_write(unsigned int addr, int phy_id, int loc, int value);
101
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);
108
109 static void axnet_detach(struct pcmcia_device *p_dev);
110
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);
116
117 /*====================================================================*/
118
119 typedef struct axnet_dev_t {
120 struct pcmcia_device *p_dev;
121 dev_node_t node;
122 caddr_t base;
123 struct timer_list watchdog;
124 int stale, fast_poll;
125 u_short link_status;
126 u_char duplex_flag;
127 int phy_id;
128 int flags;
129 } axnet_dev_t;
130
PRIV(struct net_device * dev)131 static inline axnet_dev_t *PRIV(struct net_device *dev)
132 {
133 void *p = (char *)netdev_priv(dev) + sizeof(struct ei_device);
134 return p;
135 }
136
137 /*======================================================================
138
139 axnet_attach() creates an "instance" of the driver, allocating
140 local data structures for one device. The device is registered
141 with Card Services.
142
143 ======================================================================*/
144
axnet_probe(struct pcmcia_device * link)145 static int axnet_probe(struct pcmcia_device *link)
146 {
147 axnet_dev_t *info;
148 struct net_device *dev;
149
150 DEBUG(0, "axnet_attach()\n");
151
152 dev = alloc_netdev(sizeof(struct ei_device) + sizeof(axnet_dev_t),
153 "eth%d", axdev_setup);
154
155 if (!dev)
156 return -ENOMEM;
157
158 info = PRIV(dev);
159 info->p_dev = link;
160 link->priv = dev;
161 link->irq.Attributes = IRQ_TYPE_DYNAMIC_SHARING;
162 link->irq.IRQInfo1 = IRQ_LEVEL_ID;
163 link->conf.Attributes = CONF_ENABLE_IRQ;
164 link->conf.IntType = INT_MEMORY_AND_IO;
165
166 dev->open = &axnet_open;
167 dev->stop = &axnet_close;
168 dev->do_ioctl = &axnet_ioctl;
169 SET_ETHTOOL_OPS(dev, &netdev_ethtool_ops);
170
171 return axnet_config(link);
172 } /* axnet_attach */
173
174 /*======================================================================
175
176 This deletes a driver "instance". The device is de-registered
177 with Card Services. If it has been released, all local data
178 structures are freed. Otherwise, the structures will be freed
179 when the device is released.
180
181 ======================================================================*/
182
axnet_detach(struct pcmcia_device * link)183 static void axnet_detach(struct pcmcia_device *link)
184 {
185 struct net_device *dev = link->priv;
186
187 DEBUG(0, "axnet_detach(0x%p)\n", link);
188
189 if (link->dev_node)
190 unregister_netdev(dev);
191
192 axnet_release(link);
193
194 free_netdev(dev);
195 } /* axnet_detach */
196
197 /*======================================================================
198
199 This probes for a card's hardware address by reading the PROM.
200
201 ======================================================================*/
202
get_prom(struct pcmcia_device * link)203 static int get_prom(struct pcmcia_device *link)
204 {
205 struct net_device *dev = link->priv;
206 unsigned int ioaddr = dev->base_addr;
207 int i, j;
208
209 /* This is based on drivers/net/ne.c */
210 struct {
211 u_char value, offset;
212 } program_seq[] = {
213 {E8390_NODMA+E8390_PAGE0+E8390_STOP, E8390_CMD}, /* Select page 0*/
214 {0x01, EN0_DCFG}, /* Set word-wide access. */
215 {0x00, EN0_RCNTLO}, /* Clear the count regs. */
216 {0x00, EN0_RCNTHI},
217 {0x00, EN0_IMR}, /* Mask completion irq. */
218 {0xFF, EN0_ISR},
219 {E8390_RXOFF|0x40, EN0_RXCR}, /* 0x60 Set to monitor */
220 {E8390_TXOFF, EN0_TXCR}, /* 0x02 and loopback mode. */
221 {0x10, EN0_RCNTLO},
222 {0x00, EN0_RCNTHI},
223 {0x00, EN0_RSARLO}, /* DMA starting at 0x0400. */
224 {0x04, EN0_RSARHI},
225 {E8390_RREAD+E8390_START, E8390_CMD},
226 };
227
228 /* Not much of a test, but the alternatives are messy */
229 if (link->conf.ConfigBase != 0x03c0)
230 return 0;
231
232 axnet_reset_8390(dev);
233 mdelay(10);
234
235 for (i = 0; i < ARRAY_SIZE(program_seq); i++)
236 outb_p(program_seq[i].value, ioaddr + program_seq[i].offset);
237
238 for (i = 0; i < 6; i += 2) {
239 j = inw(ioaddr + AXNET_DATAPORT);
240 dev->dev_addr[i] = j & 0xff;
241 dev->dev_addr[i+1] = j >> 8;
242 }
243 return 1;
244 } /* get_prom */
245
246 /*======================================================================
247
248 axnet_config() is scheduled to run after a CARD_INSERTION event
249 is received, to configure the PCMCIA socket, and to make the
250 ethernet device available to the system.
251
252 ======================================================================*/
253
254 #define CS_CHECK(fn, ret) \
255 do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
256
try_io_port(struct pcmcia_device * link)257 static int try_io_port(struct pcmcia_device *link)
258 {
259 int j, ret;
260 if (link->io.NumPorts1 == 32) {
261 link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;
262 if (link->io.NumPorts2 > 0) {
263 /* for master/slave multifunction cards */
264 link->io.Attributes2 = IO_DATA_PATH_WIDTH_8;
265 link->irq.Attributes =
266 IRQ_TYPE_DYNAMIC_SHARING|IRQ_FIRST_SHARED;
267 }
268 } else {
269 /* This should be two 16-port windows */
270 link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
271 link->io.Attributes2 = IO_DATA_PATH_WIDTH_16;
272 }
273 if (link->io.BasePort1 == 0) {
274 link->io.IOAddrLines = 16;
275 for (j = 0; j < 0x400; j += 0x20) {
276 link->io.BasePort1 = j ^ 0x300;
277 link->io.BasePort2 = (j ^ 0x300) + 0x10;
278 ret = pcmcia_request_io(link, &link->io);
279 if (ret == 0)
280 return ret;
281 }
282 return ret;
283 } else {
284 return pcmcia_request_io(link, &link->io);
285 }
286 }
287
axnet_configcheck(struct pcmcia_device * p_dev,cistpl_cftable_entry_t * cfg,cistpl_cftable_entry_t * dflt,unsigned int vcc,void * priv_data)288 static int axnet_configcheck(struct pcmcia_device *p_dev,
289 cistpl_cftable_entry_t *cfg,
290 cistpl_cftable_entry_t *dflt,
291 unsigned int vcc,
292 void *priv_data)
293 {
294 int i;
295 cistpl_io_t *io = &cfg->io;
296
297 if (cfg->index == 0 || cfg->io.nwin == 0)
298 return -ENODEV;
299
300 p_dev->conf.ConfigIndex = 0x05;
301 /* For multifunction cards, by convention, we configure the
302 network function with window 0, and serial with window 1 */
303 if (io->nwin > 1) {
304 i = (io->win[1].len > io->win[0].len);
305 p_dev->io.BasePort2 = io->win[1-i].base;
306 p_dev->io.NumPorts2 = io->win[1-i].len;
307 } else {
308 i = p_dev->io.NumPorts2 = 0;
309 }
310 p_dev->io.BasePort1 = io->win[i].base;
311 p_dev->io.NumPorts1 = io->win[i].len;
312 p_dev->io.IOAddrLines = io->flags & CISTPL_IO_LINES_MASK;
313 if (p_dev->io.NumPorts1 + p_dev->io.NumPorts2 >= 32)
314 return try_io_port(p_dev);
315
316 return -ENODEV;
317 }
318
axnet_config(struct pcmcia_device * link)319 static int axnet_config(struct pcmcia_device *link)
320 {
321 struct net_device *dev = link->priv;
322 axnet_dev_t *info = PRIV(dev);
323 int i, j, last_ret, last_fn;
324
325 DEBUG(0, "axnet_config(0x%p)\n", link);
326
327 /* don't trust the CIS on this; Linksys got it wrong */
328 link->conf.Present = 0x63;
329 last_ret = pcmcia_loop_config(link, axnet_configcheck, NULL);
330 if (last_ret != 0) {
331 cs_error(link, RequestIO, last_ret);
332 goto failed;
333 }
334
335 CS_CHECK(RequestIRQ, pcmcia_request_irq(link, &link->irq));
336
337 if (link->io.NumPorts2 == 8) {
338 link->conf.Attributes |= CONF_ENABLE_SPKR;
339 link->conf.Status = CCSR_AUDIO_ENA;
340 }
341
342 CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link, &link->conf));
343 dev->irq = link->irq.AssignedIRQ;
344 dev->base_addr = link->io.BasePort1;
345
346 if (!get_prom(link)) {
347 printk(KERN_NOTICE "axnet_cs: this is not an AX88190 card!\n");
348 printk(KERN_NOTICE "axnet_cs: use pcnet_cs instead.\n");
349 goto failed;
350 }
351
352 ei_status.name = "AX88190";
353 ei_status.word16 = 1;
354 ei_status.tx_start_page = AXNET_START_PG;
355 ei_status.rx_start_page = AXNET_START_PG + TX_PAGES;
356 ei_status.stop_page = AXNET_STOP_PG;
357 ei_status.reset_8390 = &axnet_reset_8390;
358 ei_status.get_8390_hdr = &get_8390_hdr;
359 ei_status.block_input = &block_input;
360 ei_status.block_output = &block_output;
361
362 if (inb(dev->base_addr + AXNET_TEST) != 0)
363 info->flags |= IS_AX88790;
364 else
365 info->flags |= IS_AX88190;
366
367 if (info->flags & IS_AX88790)
368 outb(0x10, dev->base_addr + AXNET_GPIO); /* select Internal PHY */
369
370 for (i = 0; i < 32; i++) {
371 j = mdio_read(dev->base_addr + AXNET_MII_EEP, i, 1);
372 if ((j != 0) && (j != 0xffff)) break;
373 }
374
375 /* Maybe PHY is in power down mode. (PPD_SET = 1)
376 Bit 2 of CCSR is active low. */
377 if (i == 32) {
378 conf_reg_t reg = { 0, CS_WRITE, CISREG_CCSR, 0x04 };
379 pcmcia_access_configuration_register(link, ®);
380 for (i = 0; i < 32; i++) {
381 j = mdio_read(dev->base_addr + AXNET_MII_EEP, i, 1);
382 if ((j != 0) && (j != 0xffff)) break;
383 }
384 }
385
386 info->phy_id = (i < 32) ? i : -1;
387 link->dev_node = &info->node;
388 SET_NETDEV_DEV(dev, &handle_to_dev(link));
389
390 if (register_netdev(dev) != 0) {
391 printk(KERN_NOTICE "axnet_cs: register_netdev() failed\n");
392 link->dev_node = NULL;
393 goto failed;
394 }
395
396 strcpy(info->node.dev_name, dev->name);
397
398 printk(KERN_INFO "%s: Asix AX88%d90: io %#3lx, irq %d, "
399 "hw_addr %pM\n",
400 dev->name, ((info->flags & IS_AX88790) ? 7 : 1),
401 dev->base_addr, dev->irq,
402 dev->dev_addr);
403 if (info->phy_id != -1) {
404 DEBUG(0, " MII transceiver at index %d, status %x.\n", info->phy_id, j);
405 } else {
406 printk(KERN_NOTICE " No MII transceivers found!\n");
407 }
408 return 0;
409
410 cs_failed:
411 cs_error(link, last_fn, last_ret);
412 failed:
413 axnet_release(link);
414 return -ENODEV;
415 } /* axnet_config */
416
417 /*======================================================================
418
419 After a card is removed, axnet_release() will unregister the net
420 device, and release the PCMCIA configuration. If the device is
421 still open, this will be postponed until it is closed.
422
423 ======================================================================*/
424
axnet_release(struct pcmcia_device * link)425 static void axnet_release(struct pcmcia_device *link)
426 {
427 pcmcia_disable_device(link);
428 }
429
axnet_suspend(struct pcmcia_device * link)430 static int axnet_suspend(struct pcmcia_device *link)
431 {
432 struct net_device *dev = link->priv;
433
434 if (link->open)
435 netif_device_detach(dev);
436
437 return 0;
438 }
439
axnet_resume(struct pcmcia_device * link)440 static int axnet_resume(struct pcmcia_device *link)
441 {
442 struct net_device *dev = link->priv;
443
444 if (link->open) {
445 axnet_reset_8390(dev);
446 AX88190_init(dev, 1);
447 netif_device_attach(dev);
448 }
449
450 return 0;
451 }
452
453
454 /*======================================================================
455
456 MII interface support
457
458 ======================================================================*/
459
460 #define MDIO_SHIFT_CLK 0x01
461 #define MDIO_DATA_WRITE0 0x00
462 #define MDIO_DATA_WRITE1 0x08
463 #define MDIO_DATA_READ 0x04
464 #define MDIO_MASK 0x0f
465 #define MDIO_ENB_IN 0x02
466
mdio_sync(unsigned int addr)467 static void mdio_sync(unsigned int addr)
468 {
469 int bits;
470 for (bits = 0; bits < 32; bits++) {
471 outb_p(MDIO_DATA_WRITE1, addr);
472 outb_p(MDIO_DATA_WRITE1 | MDIO_SHIFT_CLK, addr);
473 }
474 }
475
mdio_read(unsigned int addr,int phy_id,int loc)476 static int mdio_read(unsigned int addr, int phy_id, int loc)
477 {
478 u_int cmd = (0xf6<<10)|(phy_id<<5)|loc;
479 int i, retval = 0;
480
481 mdio_sync(addr);
482 for (i = 14; i >= 0; i--) {
483 int dat = (cmd&(1<<i)) ? MDIO_DATA_WRITE1 : MDIO_DATA_WRITE0;
484 outb_p(dat, addr);
485 outb_p(dat | MDIO_SHIFT_CLK, addr);
486 }
487 for (i = 19; i > 0; i--) {
488 outb_p(MDIO_ENB_IN, addr);
489 retval = (retval << 1) | ((inb_p(addr) & MDIO_DATA_READ) != 0);
490 outb_p(MDIO_ENB_IN | MDIO_SHIFT_CLK, addr);
491 }
492 return (retval>>1) & 0xffff;
493 }
494
mdio_write(unsigned int addr,int phy_id,int loc,int value)495 static void mdio_write(unsigned int addr, int phy_id, int loc, int value)
496 {
497 u_int cmd = (0x05<<28)|(phy_id<<23)|(loc<<18)|(1<<17)|value;
498 int i;
499
500 mdio_sync(addr);
501 for (i = 31; i >= 0; i--) {
502 int dat = (cmd&(1<<i)) ? MDIO_DATA_WRITE1 : MDIO_DATA_WRITE0;
503 outb_p(dat, addr);
504 outb_p(dat | MDIO_SHIFT_CLK, addr);
505 }
506 for (i = 1; i >= 0; i--) {
507 outb_p(MDIO_ENB_IN, addr);
508 outb_p(MDIO_ENB_IN | MDIO_SHIFT_CLK, addr);
509 }
510 }
511
512 /*====================================================================*/
513
axnet_open(struct net_device * dev)514 static int axnet_open(struct net_device *dev)
515 {
516 int ret;
517 axnet_dev_t *info = PRIV(dev);
518 struct pcmcia_device *link = info->p_dev;
519 unsigned int nic_base = dev->base_addr;
520
521 DEBUG(2, "axnet_open('%s')\n", dev->name);
522
523 if (!pcmcia_dev_present(link))
524 return -ENODEV;
525
526 outb_p(0xFF, nic_base + EN0_ISR); /* Clear bogus intr. */
527 ret = request_irq(dev->irq, ei_irq_wrapper, IRQF_SHARED, "axnet_cs", dev);
528 if (ret)
529 return ret;
530
531 link->open++;
532
533 info->link_status = 0x00;
534 init_timer(&info->watchdog);
535 info->watchdog.function = &ei_watchdog;
536 info->watchdog.data = (u_long)dev;
537 info->watchdog.expires = jiffies + HZ;
538 add_timer(&info->watchdog);
539
540 return ax_open(dev);
541 } /* axnet_open */
542
543 /*====================================================================*/
544
axnet_close(struct net_device * dev)545 static int axnet_close(struct net_device *dev)
546 {
547 axnet_dev_t *info = PRIV(dev);
548 struct pcmcia_device *link = info->p_dev;
549
550 DEBUG(2, "axnet_close('%s')\n", dev->name);
551
552 ax_close(dev);
553 free_irq(dev->irq, dev);
554
555 link->open--;
556 netif_stop_queue(dev);
557 del_timer_sync(&info->watchdog);
558
559 return 0;
560 } /* axnet_close */
561
562 /*======================================================================
563
564 Hard reset the card. This used to pause for the same period that
565 a 8390 reset command required, but that shouldn't be necessary.
566
567 ======================================================================*/
568
axnet_reset_8390(struct net_device * dev)569 static void axnet_reset_8390(struct net_device *dev)
570 {
571 unsigned int nic_base = dev->base_addr;
572 int i;
573
574 ei_status.txing = ei_status.dmaing = 0;
575
576 outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, nic_base + E8390_CMD);
577
578 outb(inb(nic_base + AXNET_RESET), nic_base + AXNET_RESET);
579
580 for (i = 0; i < 100; i++) {
581 if ((inb_p(nic_base+EN0_ISR) & ENISR_RESET) != 0)
582 break;
583 udelay(100);
584 }
585 outb_p(ENISR_RESET, nic_base + EN0_ISR); /* Ack intr. */
586
587 if (i == 100)
588 printk(KERN_ERR "%s: axnet_reset_8390() did not complete.\n",
589 dev->name);
590
591 } /* axnet_reset_8390 */
592
593 /*====================================================================*/
594
ei_irq_wrapper(int irq,void * dev_id)595 static irqreturn_t ei_irq_wrapper(int irq, void *dev_id)
596 {
597 struct net_device *dev = dev_id;
598 PRIV(dev)->stale = 0;
599 return ax_interrupt(irq, dev_id);
600 }
601
ei_watchdog(u_long arg)602 static void ei_watchdog(u_long arg)
603 {
604 struct net_device *dev = (struct net_device *)(arg);
605 axnet_dev_t *info = PRIV(dev);
606 unsigned int nic_base = dev->base_addr;
607 unsigned int mii_addr = nic_base + AXNET_MII_EEP;
608 u_short link;
609
610 if (!netif_device_present(dev)) goto reschedule;
611
612 /* Check for pending interrupt with expired latency timer: with
613 this, we can limp along even if the interrupt is blocked */
614 if (info->stale++ && (inb_p(nic_base + EN0_ISR) & ENISR_ALL)) {
615 if (!info->fast_poll)
616 printk(KERN_INFO "%s: interrupt(s) dropped!\n", dev->name);
617 ei_irq_wrapper(dev->irq, dev);
618 info->fast_poll = HZ;
619 }
620 if (info->fast_poll) {
621 info->fast_poll--;
622 info->watchdog.expires = jiffies + 1;
623 add_timer(&info->watchdog);
624 return;
625 }
626
627 if (info->phy_id < 0)
628 goto reschedule;
629 link = mdio_read(mii_addr, info->phy_id, 1);
630 if (!link || (link == 0xffff)) {
631 printk(KERN_INFO "%s: MII is missing!\n", dev->name);
632 info->phy_id = -1;
633 goto reschedule;
634 }
635
636 link &= 0x0004;
637 if (link != info->link_status) {
638 u_short p = mdio_read(mii_addr, info->phy_id, 5);
639 printk(KERN_INFO "%s: %s link beat\n", dev->name,
640 (link) ? "found" : "lost");
641 if (link) {
642 info->duplex_flag = (p & 0x0140) ? 0x80 : 0x00;
643 if (p)
644 printk(KERN_INFO "%s: autonegotiation complete: "
645 "%sbaseT-%cD selected\n", dev->name,
646 ((p & 0x0180) ? "100" : "10"),
647 ((p & 0x0140) ? 'F' : 'H'));
648 else
649 printk(KERN_INFO "%s: link partner did not autonegotiate\n",
650 dev->name);
651 AX88190_init(dev, 1);
652 }
653 info->link_status = link;
654 }
655
656 reschedule:
657 info->watchdog.expires = jiffies + HZ;
658 add_timer(&info->watchdog);
659 }
660
netdev_get_drvinfo(struct net_device * dev,struct ethtool_drvinfo * info)661 static void netdev_get_drvinfo(struct net_device *dev,
662 struct ethtool_drvinfo *info)
663 {
664 strcpy(info->driver, "axnet_cs");
665 }
666
667 static const struct ethtool_ops netdev_ethtool_ops = {
668 .get_drvinfo = netdev_get_drvinfo,
669 };
670
671 /*====================================================================*/
672
axnet_ioctl(struct net_device * dev,struct ifreq * rq,int cmd)673 static int axnet_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
674 {
675 axnet_dev_t *info = PRIV(dev);
676 u16 *data = (u16 *)&rq->ifr_ifru;
677 unsigned int mii_addr = dev->base_addr + AXNET_MII_EEP;
678 switch (cmd) {
679 case SIOCGMIIPHY:
680 data[0] = info->phy_id;
681 case SIOCGMIIREG: /* Read MII PHY register. */
682 data[3] = mdio_read(mii_addr, data[0], data[1] & 0x1f);
683 return 0;
684 case SIOCSMIIREG: /* Write MII PHY register. */
685 if (!capable(CAP_NET_ADMIN))
686 return -EPERM;
687 mdio_write(mii_addr, data[0], data[1] & 0x1f, data[2]);
688 return 0;
689 }
690 return -EOPNOTSUPP;
691 }
692
693 /*====================================================================*/
694
get_8390_hdr(struct net_device * dev,struct e8390_pkt_hdr * hdr,int ring_page)695 static void get_8390_hdr(struct net_device *dev,
696 struct e8390_pkt_hdr *hdr,
697 int ring_page)
698 {
699 unsigned int nic_base = dev->base_addr;
700
701 outb_p(0, nic_base + EN0_RSARLO); /* On page boundary */
702 outb_p(ring_page, nic_base + EN0_RSARHI);
703 outb_p(E8390_RREAD+E8390_START, nic_base + AXNET_CMD);
704
705 insw(nic_base + AXNET_DATAPORT, hdr,
706 sizeof(struct e8390_pkt_hdr)>>1);
707 /* Fix for big endian systems */
708 hdr->count = le16_to_cpu(hdr->count);
709
710 }
711
712 /*====================================================================*/
713
block_input(struct net_device * dev,int count,struct sk_buff * skb,int ring_offset)714 static void block_input(struct net_device *dev, int count,
715 struct sk_buff *skb, int ring_offset)
716 {
717 unsigned int nic_base = dev->base_addr;
718 int xfer_count = count;
719 char *buf = skb->data;
720
721 #ifdef PCMCIA_DEBUG
722 if ((ei_debug > 4) && (count != 4))
723 printk(KERN_DEBUG "%s: [bi=%d]\n", dev->name, count+4);
724 #endif
725 outb_p(ring_offset & 0xff, nic_base + EN0_RSARLO);
726 outb_p(ring_offset >> 8, nic_base + EN0_RSARHI);
727 outb_p(E8390_RREAD+E8390_START, nic_base + AXNET_CMD);
728
729 insw(nic_base + AXNET_DATAPORT,buf,count>>1);
730 if (count & 0x01)
731 buf[count-1] = inb(nic_base + AXNET_DATAPORT), xfer_count++;
732
733 }
734
735 /*====================================================================*/
736
block_output(struct net_device * dev,int count,const u_char * buf,const int start_page)737 static void block_output(struct net_device *dev, int count,
738 const u_char *buf, const int start_page)
739 {
740 unsigned int nic_base = dev->base_addr;
741
742 #ifdef PCMCIA_DEBUG
743 if (ei_debug > 4)
744 printk(KERN_DEBUG "%s: [bo=%d]\n", dev->name, count);
745 #endif
746
747 /* Round the count up for word writes. Do we need to do this?
748 What effect will an odd byte count have on the 8390?
749 I should check someday. */
750 if (count & 0x01)
751 count++;
752
753 outb_p(0x00, nic_base + EN0_RSARLO);
754 outb_p(start_page, nic_base + EN0_RSARHI);
755 outb_p(E8390_RWRITE+E8390_START, nic_base + AXNET_CMD);
756 outsw(nic_base + AXNET_DATAPORT, buf, count>>1);
757 }
758
759 static struct pcmcia_device_id axnet_ids[] = {
760 PCMCIA_PFC_DEVICE_MANF_CARD(0, 0x016c, 0x0081),
761 PCMCIA_DEVICE_MANF_CARD(0x018a, 0x0301),
762 PCMCIA_DEVICE_MANF_CARD(0x026f, 0x0301),
763 PCMCIA_DEVICE_MANF_CARD(0x026f, 0x0303),
764 PCMCIA_DEVICE_MANF_CARD(0x026f, 0x0309),
765 PCMCIA_DEVICE_MANF_CARD(0x0274, 0x1106),
766 PCMCIA_DEVICE_MANF_CARD(0x8a01, 0xc1ab),
767 PCMCIA_DEVICE_MANF_CARD(0x021b, 0x0202),
768 PCMCIA_DEVICE_MANF_CARD(0xffff, 0x1090),
769 PCMCIA_DEVICE_PROD_ID12("AmbiCom,Inc.", "Fast Ethernet PC Card(AMB8110)", 0x49b020a7, 0x119cc9fc),
770 PCMCIA_DEVICE_PROD_ID124("Fast Ethernet", "16-bit PC Card", "AX88190", 0xb4be14e3, 0x9a12eb6a, 0xab9be5ef),
771 PCMCIA_DEVICE_PROD_ID12("ASIX", "AX88190", 0x0959823b, 0xab9be5ef),
772 PCMCIA_DEVICE_PROD_ID12("Billionton", "LNA-100B", 0x552ab682, 0xbc3b87e1),
773 PCMCIA_DEVICE_PROD_ID12("CHEETAH ETHERCARD", "EN2228", 0x00fa7bc8, 0x00e990cc),
774 PCMCIA_DEVICE_PROD_ID12("CNet", "CNF301", 0xbc477dde, 0x78c5f40b),
775 PCMCIA_DEVICE_PROD_ID12("corega K.K.", "corega FEther PCC-TXD", 0x5261440f, 0x436768c5),
776 PCMCIA_DEVICE_PROD_ID12("corega K.K.", "corega FEtherII PCC-TXD", 0x5261440f, 0x730df72e),
777 PCMCIA_DEVICE_PROD_ID12("Dynalink", "L100C16", 0x55632fd5, 0x66bc2a90),
778 PCMCIA_DEVICE_PROD_ID12("IO DATA", "ETXPCM", 0x547e66dc, 0x233adac2),
779 PCMCIA_DEVICE_PROD_ID12("Linksys", "EtherFast 10/100 PC Card (PCMPC100 V3)", 0x0733cc81, 0x232019a8),
780 PCMCIA_DEVICE_PROD_ID12("MELCO", "LPC3-TX", 0x481e0094, 0xf91af609),
781 PCMCIA_DEVICE_PROD_ID12("NETGEAR", "FA411", 0x9aa79dc3, 0x40fad875),
782 PCMCIA_DEVICE_PROD_ID12("PCMCIA", "100BASE", 0x281f1c5d, 0x7c2add04),
783 PCMCIA_DEVICE_PROD_ID12("PCMCIA", "FastEtherCard", 0x281f1c5d, 0x7ef26116),
784 PCMCIA_DEVICE_PROD_ID12("PCMCIA", "FEP501", 0x281f1c5d, 0x2e272058),
785 PCMCIA_DEVICE_PROD_ID14("Network Everywhere", "AX88190", 0x820a67b6, 0xab9be5ef),
786 PCMCIA_DEVICE_NULL,
787 };
788 MODULE_DEVICE_TABLE(pcmcia, axnet_ids);
789
790 static struct pcmcia_driver axnet_cs_driver = {
791 .owner = THIS_MODULE,
792 .drv = {
793 .name = "axnet_cs",
794 },
795 .probe = axnet_probe,
796 .remove = axnet_detach,
797 .id_table = axnet_ids,
798 .suspend = axnet_suspend,
799 .resume = axnet_resume,
800 };
801
init_axnet_cs(void)802 static int __init init_axnet_cs(void)
803 {
804 return pcmcia_register_driver(&axnet_cs_driver);
805 }
806
exit_axnet_cs(void)807 static void __exit exit_axnet_cs(void)
808 {
809 pcmcia_unregister_driver(&axnet_cs_driver);
810 }
811
812 module_init(init_axnet_cs);
813 module_exit(exit_axnet_cs);
814
815 /*====================================================================*/
816
817 /* 8390.c: A general NS8390 ethernet driver core for linux. */
818 /*
819 Written 1992-94 by Donald Becker.
820
821 Copyright 1993 United States Government as represented by the
822 Director, National Security Agency.
823
824 This software may be used and distributed according to the terms
825 of the GNU General Public License, incorporated herein by reference.
826
827 The author may be reached as becker@scyld.com, or C/O
828 Scyld Computing Corporation
829 410 Severn Ave., Suite 210
830 Annapolis MD 21403
831
832 This is the chip-specific code for many 8390-based ethernet adaptors.
833 This is not a complete driver, it must be combined with board-specific
834 code such as ne.c, wd.c, 3c503.c, etc.
835
836 Seeing how at least eight drivers use this code, (not counting the
837 PCMCIA ones either) it is easy to break some card by what seems like
838 a simple innocent change. Please contact me or Donald if you think
839 you have found something that needs changing. -- PG
840
841 Changelog:
842
843 Paul Gortmaker : remove set_bit lock, other cleanups.
844 Paul Gortmaker : add ei_get_8390_hdr() so we can pass skb's to
845 ei_block_input() for eth_io_copy_and_sum().
846 Paul Gortmaker : exchange static int ei_pingpong for a #define,
847 also add better Tx error handling.
848 Paul Gortmaker : rewrite Rx overrun handling as per NS specs.
849 Alexey Kuznetsov : use the 8390's six bit hash multicast filter.
850 Paul Gortmaker : tweak ANK's above multicast changes a bit.
851 Paul Gortmaker : update packet statistics for v2.1.x
852 Alan Cox : support arbitary stupid port mappings on the
853 68K Macintosh. Support >16bit I/O spaces
854 Paul Gortmaker : add kmod support for auto-loading of the 8390
855 module by all drivers that require it.
856 Alan Cox : Spinlocking work, added 'BUG_83C690'
857 Paul Gortmaker : Separate out Tx timeout code from Tx path.
858
859 Sources:
860 The National Semiconductor LAN Databook, and the 3Com 3c503 databook.
861
862 */
863
864 static const char *version_8390 =
865 "8390.c:v1.10cvs 9/23/94 Donald Becker (becker@scyld.com)\n";
866
867 #include <linux/bitops.h>
868 #include <asm/irq.h>
869 #include <linux/fcntl.h>
870 #include <linux/in.h>
871 #include <linux/interrupt.h>
872
873 #include <linux/etherdevice.h>
874
875 #define BUG_83C690
876
877 /* These are the operational function interfaces to board-specific
878 routines.
879 void reset_8390(struct net_device *dev)
880 Resets the board associated with DEV, including a hardware reset of
881 the 8390. This is only called when there is a transmit timeout, and
882 it is always followed by 8390_init().
883 void block_output(struct net_device *dev, int count, const unsigned char *buf,
884 int start_page)
885 Write the COUNT bytes of BUF to the packet buffer at START_PAGE. The
886 "page" value uses the 8390's 256-byte pages.
887 void get_8390_hdr(struct net_device *dev, struct e8390_hdr *hdr, int ring_page)
888 Read the 4 byte, page aligned 8390 header. *If* there is a
889 subsequent read, it will be of the rest of the packet.
890 void block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset)
891 Read COUNT bytes from the packet buffer into the skb data area. Start
892 reading from RING_OFFSET, the address as the 8390 sees it. This will always
893 follow the read of the 8390 header.
894 */
895 #define ei_reset_8390 (ei_local->reset_8390)
896 #define ei_block_output (ei_local->block_output)
897 #define ei_block_input (ei_local->block_input)
898 #define ei_get_8390_hdr (ei_local->get_8390_hdr)
899
900 /* use 0 for production, 1 for verification, >2 for debug */
901 #ifndef ei_debug
902 int ei_debug = 1;
903 #endif
904
905 /* Index to functions. */
906 static void ei_tx_intr(struct net_device *dev);
907 static void ei_tx_err(struct net_device *dev);
908 static void axnet_tx_timeout(struct net_device *dev);
909 static void ei_receive(struct net_device *dev);
910 static void ei_rx_overrun(struct net_device *dev);
911
912 /* Routines generic to NS8390-based boards. */
913 static void NS8390_trigger_send(struct net_device *dev, unsigned int length,
914 int start_page);
915 static void set_multicast_list(struct net_device *dev);
916 static void do_set_multicast_list(struct net_device *dev);
917
918 /*
919 * SMP and the 8390 setup.
920 *
921 * The 8390 isnt exactly designed to be multithreaded on RX/TX. There is
922 * a page register that controls bank and packet buffer access. We guard
923 * this with ei_local->page_lock. Nobody should assume or set the page other
924 * than zero when the lock is not held. Lock holders must restore page 0
925 * before unlocking. Even pure readers must take the lock to protect in
926 * page 0.
927 *
928 * To make life difficult the chip can also be very slow. We therefore can't
929 * just use spinlocks. For the longer lockups we disable the irq the device
930 * sits on and hold the lock. We must hold the lock because there is a dual
931 * processor case other than interrupts (get stats/set multicast list in
932 * parallel with each other and transmit).
933 *
934 * Note: in theory we can just disable the irq on the card _but_ there is
935 * a latency on SMP irq delivery. So we can easily go "disable irq" "sync irqs"
936 * enter lock, take the queued irq. So we waddle instead of flying.
937 *
938 * Finally by special arrangement for the purpose of being generally
939 * annoying the transmit function is called bh atomic. That places
940 * restrictions on the user context callers as disable_irq won't save
941 * them.
942 */
943
944 /**
945 * ax_open - Open/initialize the board.
946 * @dev: network device to initialize
947 *
948 * This routine goes all-out, setting everything
949 * up anew at each open, even though many of these registers should only
950 * need to be set once at boot.
951 */
ax_open(struct net_device * dev)952 static int ax_open(struct net_device *dev)
953 {
954 unsigned long flags;
955 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
956
957 #ifdef HAVE_TX_TIMEOUT
958 /* The card I/O part of the driver (e.g. 3c503) can hook a Tx timeout
959 wrapper that does e.g. media check & then calls axnet_tx_timeout. */
960 if (dev->tx_timeout == NULL)
961 dev->tx_timeout = axnet_tx_timeout;
962 if (dev->watchdog_timeo <= 0)
963 dev->watchdog_timeo = TX_TIMEOUT;
964 #endif
965
966 /*
967 * Grab the page lock so we own the register set, then call
968 * the init function.
969 */
970
971 spin_lock_irqsave(&ei_local->page_lock, flags);
972 AX88190_init(dev, 1);
973 /* Set the flag before we drop the lock, That way the IRQ arrives
974 after its set and we get no silly warnings */
975 netif_start_queue(dev);
976 spin_unlock_irqrestore(&ei_local->page_lock, flags);
977 ei_local->irqlock = 0;
978 return 0;
979 }
980
981 #define dev_lock(dev) (((struct ei_device *)netdev_priv(dev))->page_lock)
982
983 /**
984 * ax_close - shut down network device
985 * @dev: network device to close
986 *
987 * Opposite of ax_open(). Only used when "ifconfig <devname> down" is done.
988 */
ax_close(struct net_device * dev)989 static int ax_close(struct net_device *dev)
990 {
991 unsigned long flags;
992
993 /*
994 * Hold the page lock during close
995 */
996
997 spin_lock_irqsave(&dev_lock(dev), flags);
998 AX88190_init(dev, 0);
999 spin_unlock_irqrestore(&dev_lock(dev), flags);
1000 netif_stop_queue(dev);
1001 return 0;
1002 }
1003
1004 /**
1005 * axnet_tx_timeout - handle transmit time out condition
1006 * @dev: network device which has apparently fallen asleep
1007 *
1008 * Called by kernel when device never acknowledges a transmit has
1009 * completed (or failed) - i.e. never posted a Tx related interrupt.
1010 */
1011
axnet_tx_timeout(struct net_device * dev)1012 static void axnet_tx_timeout(struct net_device *dev)
1013 {
1014 long e8390_base = dev->base_addr;
1015 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1016 int txsr, isr, tickssofar = jiffies - dev->trans_start;
1017 unsigned long flags;
1018
1019 dev->stats.tx_errors++;
1020
1021 spin_lock_irqsave(&ei_local->page_lock, flags);
1022 txsr = inb(e8390_base+EN0_TSR);
1023 isr = inb(e8390_base+EN0_ISR);
1024 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1025
1026 printk(KERN_DEBUG "%s: Tx timed out, %s TSR=%#2x, ISR=%#2x, t=%d.\n",
1027 dev->name, (txsr & ENTSR_ABT) ? "excess collisions." :
1028 (isr) ? "lost interrupt?" : "cable problem?", txsr, isr, tickssofar);
1029
1030 if (!isr && !dev->stats.tx_packets)
1031 {
1032 /* The 8390 probably hasn't gotten on the cable yet. */
1033 ei_local->interface_num ^= 1; /* Try a different xcvr. */
1034 }
1035
1036 /* Ugly but a reset can be slow, yet must be protected */
1037
1038 spin_lock_irqsave(&ei_local->page_lock, flags);
1039
1040 /* Try to restart the card. Perhaps the user has fixed something. */
1041 ei_reset_8390(dev);
1042 AX88190_init(dev, 1);
1043
1044 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1045 netif_wake_queue(dev);
1046 }
1047
1048 /**
1049 * axnet_start_xmit - begin packet transmission
1050 * @skb: packet to be sent
1051 * @dev: network device to which packet is sent
1052 *
1053 * Sends a packet to an 8390 network device.
1054 */
1055
axnet_start_xmit(struct sk_buff * skb,struct net_device * dev)1056 static int axnet_start_xmit(struct sk_buff *skb, struct net_device *dev)
1057 {
1058 long e8390_base = dev->base_addr;
1059 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1060 int length, send_length, output_page;
1061 unsigned long flags;
1062 u8 packet[ETH_ZLEN];
1063
1064 netif_stop_queue(dev);
1065
1066 length = skb->len;
1067
1068 /* Mask interrupts from the ethercard.
1069 SMP: We have to grab the lock here otherwise the IRQ handler
1070 on another CPU can flip window and race the IRQ mask set. We end
1071 up trashing the mcast filter not disabling irqs if we don't lock */
1072
1073 spin_lock_irqsave(&ei_local->page_lock, flags);
1074 outb_p(0x00, e8390_base + EN0_IMR);
1075 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1076
1077 /*
1078 * Slow phase with lock held.
1079 */
1080
1081 spin_lock_irqsave(&ei_local->page_lock, flags);
1082
1083 ei_local->irqlock = 1;
1084
1085 send_length = max(length, ETH_ZLEN);
1086
1087 /*
1088 * We have two Tx slots available for use. Find the first free
1089 * slot, and then perform some sanity checks. With two Tx bufs,
1090 * you get very close to transmitting back-to-back packets. With
1091 * only one Tx buf, the transmitter sits idle while you reload the
1092 * card, leaving a substantial gap between each transmitted packet.
1093 */
1094
1095 if (ei_local->tx1 == 0)
1096 {
1097 output_page = ei_local->tx_start_page;
1098 ei_local->tx1 = send_length;
1099 if (ei_debug && ei_local->tx2 > 0)
1100 printk(KERN_DEBUG "%s: idle transmitter tx2=%d, lasttx=%d, txing=%d.\n",
1101 dev->name, ei_local->tx2, ei_local->lasttx, ei_local->txing);
1102 }
1103 else if (ei_local->tx2 == 0)
1104 {
1105 output_page = ei_local->tx_start_page + TX_PAGES/2;
1106 ei_local->tx2 = send_length;
1107 if (ei_debug && ei_local->tx1 > 0)
1108 printk(KERN_DEBUG "%s: idle transmitter, tx1=%d, lasttx=%d, txing=%d.\n",
1109 dev->name, ei_local->tx1, ei_local->lasttx, ei_local->txing);
1110 }
1111 else
1112 { /* We should never get here. */
1113 if (ei_debug)
1114 printk(KERN_DEBUG "%s: No Tx buffers free! tx1=%d tx2=%d last=%d\n",
1115 dev->name, ei_local->tx1, ei_local->tx2, ei_local->lasttx);
1116 ei_local->irqlock = 0;
1117 netif_stop_queue(dev);
1118 outb_p(ENISR_ALL, e8390_base + EN0_IMR);
1119 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1120 dev->stats.tx_errors++;
1121 return 1;
1122 }
1123
1124 /*
1125 * Okay, now upload the packet and trigger a send if the transmitter
1126 * isn't already sending. If it is busy, the interrupt handler will
1127 * trigger the send later, upon receiving a Tx done interrupt.
1128 */
1129
1130 if (length == skb->len)
1131 ei_block_output(dev, length, skb->data, output_page);
1132 else {
1133 memset(packet, 0, ETH_ZLEN);
1134 skb_copy_from_linear_data(skb, packet, skb->len);
1135 ei_block_output(dev, length, packet, output_page);
1136 }
1137
1138 if (! ei_local->txing)
1139 {
1140 ei_local->txing = 1;
1141 NS8390_trigger_send(dev, send_length, output_page);
1142 dev->trans_start = jiffies;
1143 if (output_page == ei_local->tx_start_page)
1144 {
1145 ei_local->tx1 = -1;
1146 ei_local->lasttx = -1;
1147 }
1148 else
1149 {
1150 ei_local->tx2 = -1;
1151 ei_local->lasttx = -2;
1152 }
1153 }
1154 else ei_local->txqueue++;
1155
1156 if (ei_local->tx1 && ei_local->tx2)
1157 netif_stop_queue(dev);
1158 else
1159 netif_start_queue(dev);
1160
1161 /* Turn 8390 interrupts back on. */
1162 ei_local->irqlock = 0;
1163 outb_p(ENISR_ALL, e8390_base + EN0_IMR);
1164
1165 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1166
1167 dev_kfree_skb (skb);
1168 dev->stats.tx_bytes += send_length;
1169
1170 return 0;
1171 }
1172
1173 /**
1174 * ax_interrupt - handle the interrupts from an 8390
1175 * @irq: interrupt number
1176 * @dev_id: a pointer to the net_device
1177 *
1178 * Handle the ether interface interrupts. We pull packets from
1179 * the 8390 via the card specific functions and fire them at the networking
1180 * stack. We also handle transmit completions and wake the transmit path if
1181 * necessary. We also update the counters and do other housekeeping as
1182 * needed.
1183 */
1184
ax_interrupt(int irq,void * dev_id)1185 static irqreturn_t ax_interrupt(int irq, void *dev_id)
1186 {
1187 struct net_device *dev = dev_id;
1188 long e8390_base;
1189 int interrupts, nr_serviced = 0, i;
1190 struct ei_device *ei_local;
1191 int handled = 0;
1192
1193 e8390_base = dev->base_addr;
1194 ei_local = netdev_priv(dev);
1195
1196 /*
1197 * Protect the irq test too.
1198 */
1199
1200 spin_lock(&ei_local->page_lock);
1201
1202 if (ei_local->irqlock)
1203 {
1204 #if 1 /* This might just be an interrupt for a PCI device sharing this line */
1205 /* The "irqlock" check is only for testing. */
1206 printk(ei_local->irqlock
1207 ? "%s: Interrupted while interrupts are masked! isr=%#2x imr=%#2x.\n"
1208 : "%s: Reentering the interrupt handler! isr=%#2x imr=%#2x.\n",
1209 dev->name, inb_p(e8390_base + EN0_ISR),
1210 inb_p(e8390_base + EN0_IMR));
1211 #endif
1212 spin_unlock(&ei_local->page_lock);
1213 return IRQ_NONE;
1214 }
1215
1216 if (ei_debug > 3)
1217 printk(KERN_DEBUG "%s: interrupt(isr=%#2.2x).\n", dev->name,
1218 inb_p(e8390_base + EN0_ISR));
1219
1220 outb_p(0x00, e8390_base + EN0_ISR);
1221 ei_local->irqlock = 1;
1222
1223 /* !!Assumption!! -- we stay in page 0. Don't break this. */
1224 while ((interrupts = inb_p(e8390_base + EN0_ISR)) != 0
1225 && ++nr_serviced < MAX_SERVICE)
1226 {
1227 if (!netif_running(dev) || (interrupts == 0xff)) {
1228 if (ei_debug > 1)
1229 printk(KERN_WARNING "%s: interrupt from stopped card\n", dev->name);
1230 outb_p(interrupts, e8390_base + EN0_ISR);
1231 interrupts = 0;
1232 break;
1233 }
1234 handled = 1;
1235
1236 /* AX88190 bug fix. */
1237 outb_p(interrupts, e8390_base + EN0_ISR);
1238 for (i = 0; i < 10; i++) {
1239 if (!(inb(e8390_base + EN0_ISR) & interrupts))
1240 break;
1241 outb_p(0, e8390_base + EN0_ISR);
1242 outb_p(interrupts, e8390_base + EN0_ISR);
1243 }
1244 if (interrupts & ENISR_OVER)
1245 ei_rx_overrun(dev);
1246 else if (interrupts & (ENISR_RX+ENISR_RX_ERR))
1247 {
1248 /* Got a good (?) packet. */
1249 ei_receive(dev);
1250 }
1251 /* Push the next to-transmit packet through. */
1252 if (interrupts & ENISR_TX)
1253 ei_tx_intr(dev);
1254 else if (interrupts & ENISR_TX_ERR)
1255 ei_tx_err(dev);
1256
1257 if (interrupts & ENISR_COUNTERS)
1258 {
1259 dev->stats.rx_frame_errors += inb_p(e8390_base + EN0_COUNTER0);
1260 dev->stats.rx_crc_errors += inb_p(e8390_base + EN0_COUNTER1);
1261 dev->stats.rx_missed_errors+= inb_p(e8390_base + EN0_COUNTER2);
1262 }
1263 }
1264
1265 if (interrupts && ei_debug > 3)
1266 {
1267 handled = 1;
1268 if (nr_serviced >= MAX_SERVICE)
1269 {
1270 /* 0xFF is valid for a card removal */
1271 if(interrupts!=0xFF)
1272 printk(KERN_WARNING "%s: Too much work at interrupt, status %#2.2x\n",
1273 dev->name, interrupts);
1274 outb_p(ENISR_ALL, e8390_base + EN0_ISR); /* Ack. most intrs. */
1275 } else {
1276 printk(KERN_WARNING "%s: unknown interrupt %#2x\n", dev->name, interrupts);
1277 outb_p(0xff, e8390_base + EN0_ISR); /* Ack. all intrs. */
1278 }
1279 }
1280
1281 /* Turn 8390 interrupts back on. */
1282 ei_local->irqlock = 0;
1283 outb_p(ENISR_ALL, e8390_base + EN0_IMR);
1284
1285 spin_unlock(&ei_local->page_lock);
1286 return IRQ_RETVAL(handled);
1287 }
1288
1289 /**
1290 * ei_tx_err - handle transmitter error
1291 * @dev: network device which threw the exception
1292 *
1293 * A transmitter error has happened. Most likely excess collisions (which
1294 * is a fairly normal condition). If the error is one where the Tx will
1295 * have been aborted, we try and send another one right away, instead of
1296 * letting the failed packet sit and collect dust in the Tx buffer. This
1297 * is a much better solution as it avoids kernel based Tx timeouts, and
1298 * an unnecessary card reset.
1299 *
1300 * Called with lock held.
1301 */
1302
ei_tx_err(struct net_device * dev)1303 static void ei_tx_err(struct net_device *dev)
1304 {
1305 long e8390_base = dev->base_addr;
1306 unsigned char txsr = inb_p(e8390_base+EN0_TSR);
1307 unsigned char tx_was_aborted = txsr & (ENTSR_ABT+ENTSR_FU);
1308
1309 #ifdef VERBOSE_ERROR_DUMP
1310 printk(KERN_DEBUG "%s: transmitter error (%#2x): ", dev->name, txsr);
1311 if (txsr & ENTSR_ABT)
1312 printk("excess-collisions ");
1313 if (txsr & ENTSR_ND)
1314 printk("non-deferral ");
1315 if (txsr & ENTSR_CRS)
1316 printk("lost-carrier ");
1317 if (txsr & ENTSR_FU)
1318 printk("FIFO-underrun ");
1319 if (txsr & ENTSR_CDH)
1320 printk("lost-heartbeat ");
1321 printk("\n");
1322 #endif
1323
1324 if (tx_was_aborted)
1325 ei_tx_intr(dev);
1326 else
1327 {
1328 dev->stats.tx_errors++;
1329 if (txsr & ENTSR_CRS) dev->stats.tx_carrier_errors++;
1330 if (txsr & ENTSR_CDH) dev->stats.tx_heartbeat_errors++;
1331 if (txsr & ENTSR_OWC) dev->stats.tx_window_errors++;
1332 }
1333 }
1334
1335 /**
1336 * ei_tx_intr - transmit interrupt handler
1337 * @dev: network device for which tx intr is handled
1338 *
1339 * We have finished a transmit: check for errors and then trigger the next
1340 * packet to be sent. Called with lock held.
1341 */
1342
ei_tx_intr(struct net_device * dev)1343 static void ei_tx_intr(struct net_device *dev)
1344 {
1345 long e8390_base = dev->base_addr;
1346 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1347 int status = inb(e8390_base + EN0_TSR);
1348
1349 /*
1350 * There are two Tx buffers, see which one finished, and trigger
1351 * the send of another one if it exists.
1352 */
1353 ei_local->txqueue--;
1354
1355 if (ei_local->tx1 < 0)
1356 {
1357 if (ei_local->lasttx != 1 && ei_local->lasttx != -1)
1358 printk(KERN_ERR "%s: bogus last_tx_buffer %d, tx1=%d.\n",
1359 ei_local->name, ei_local->lasttx, ei_local->tx1);
1360 ei_local->tx1 = 0;
1361 if (ei_local->tx2 > 0)
1362 {
1363 ei_local->txing = 1;
1364 NS8390_trigger_send(dev, ei_local->tx2, ei_local->tx_start_page + 6);
1365 dev->trans_start = jiffies;
1366 ei_local->tx2 = -1,
1367 ei_local->lasttx = 2;
1368 }
1369 else ei_local->lasttx = 20, ei_local->txing = 0;
1370 }
1371 else if (ei_local->tx2 < 0)
1372 {
1373 if (ei_local->lasttx != 2 && ei_local->lasttx != -2)
1374 printk("%s: bogus last_tx_buffer %d, tx2=%d.\n",
1375 ei_local->name, ei_local->lasttx, ei_local->tx2);
1376 ei_local->tx2 = 0;
1377 if (ei_local->tx1 > 0)
1378 {
1379 ei_local->txing = 1;
1380 NS8390_trigger_send(dev, ei_local->tx1, ei_local->tx_start_page);
1381 dev->trans_start = jiffies;
1382 ei_local->tx1 = -1;
1383 ei_local->lasttx = 1;
1384 }
1385 else
1386 ei_local->lasttx = 10, ei_local->txing = 0;
1387 }
1388 // else printk(KERN_WARNING "%s: unexpected TX-done interrupt, lasttx=%d.\n",
1389 // dev->name, ei_local->lasttx);
1390
1391 /* Minimize Tx latency: update the statistics after we restart TXing. */
1392 if (status & ENTSR_COL)
1393 dev->stats.collisions++;
1394 if (status & ENTSR_PTX)
1395 dev->stats.tx_packets++;
1396 else
1397 {
1398 dev->stats.tx_errors++;
1399 if (status & ENTSR_ABT)
1400 {
1401 dev->stats.tx_aborted_errors++;
1402 dev->stats.collisions += 16;
1403 }
1404 if (status & ENTSR_CRS)
1405 dev->stats.tx_carrier_errors++;
1406 if (status & ENTSR_FU)
1407 dev->stats.tx_fifo_errors++;
1408 if (status & ENTSR_CDH)
1409 dev->stats.tx_heartbeat_errors++;
1410 if (status & ENTSR_OWC)
1411 dev->stats.tx_window_errors++;
1412 }
1413 netif_wake_queue(dev);
1414 }
1415
1416 /**
1417 * ei_receive - receive some packets
1418 * @dev: network device with which receive will be run
1419 *
1420 * We have a good packet(s), get it/them out of the buffers.
1421 * Called with lock held.
1422 */
1423
ei_receive(struct net_device * dev)1424 static void ei_receive(struct net_device *dev)
1425 {
1426 long e8390_base = dev->base_addr;
1427 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1428 unsigned char rxing_page, this_frame, next_frame;
1429 unsigned short current_offset;
1430 int rx_pkt_count = 0;
1431 struct e8390_pkt_hdr rx_frame;
1432
1433 while (++rx_pkt_count < 10)
1434 {
1435 int pkt_len, pkt_stat;
1436
1437 /* Get the rx page (incoming packet pointer). */
1438 rxing_page = inb_p(e8390_base + EN1_CURPAG -1);
1439
1440 /* Remove one frame from the ring. Boundary is always a page behind. */
1441 this_frame = inb_p(e8390_base + EN0_BOUNDARY) + 1;
1442 if (this_frame >= ei_local->stop_page)
1443 this_frame = ei_local->rx_start_page;
1444
1445 /* Someday we'll omit the previous, iff we never get this message.
1446 (There is at least one clone claimed to have a problem.)
1447
1448 Keep quiet if it looks like a card removal. One problem here
1449 is that some clones crash in roughly the same way.
1450 */
1451 if (ei_debug > 0 && this_frame != ei_local->current_page && (this_frame!=0x0 || rxing_page!=0xFF))
1452 printk(KERN_ERR "%s: mismatched read page pointers %2x vs %2x.\n",
1453 dev->name, this_frame, ei_local->current_page);
1454
1455 if (this_frame == rxing_page) /* Read all the frames? */
1456 break; /* Done for now */
1457
1458 current_offset = this_frame << 8;
1459 ei_get_8390_hdr(dev, &rx_frame, this_frame);
1460
1461 pkt_len = rx_frame.count - sizeof(struct e8390_pkt_hdr);
1462 pkt_stat = rx_frame.status;
1463
1464 next_frame = this_frame + 1 + ((pkt_len+4)>>8);
1465
1466 if (pkt_len < 60 || pkt_len > 1518)
1467 {
1468 if (ei_debug)
1469 printk(KERN_DEBUG "%s: bogus packet size: %d, status=%#2x nxpg=%#2x.\n",
1470 dev->name, rx_frame.count, rx_frame.status,
1471 rx_frame.next);
1472 dev->stats.rx_errors++;
1473 dev->stats.rx_length_errors++;
1474 }
1475 else if ((pkt_stat & 0x0F) == ENRSR_RXOK)
1476 {
1477 struct sk_buff *skb;
1478
1479 skb = dev_alloc_skb(pkt_len+2);
1480 if (skb == NULL)
1481 {
1482 if (ei_debug > 1)
1483 printk(KERN_DEBUG "%s: Couldn't allocate a sk_buff of size %d.\n",
1484 dev->name, pkt_len);
1485 dev->stats.rx_dropped++;
1486 break;
1487 }
1488 else
1489 {
1490 skb_reserve(skb,2); /* IP headers on 16 byte boundaries */
1491 skb_put(skb, pkt_len); /* Make room */
1492 ei_block_input(dev, pkt_len, skb, current_offset + sizeof(rx_frame));
1493 skb->protocol=eth_type_trans(skb,dev);
1494 netif_rx(skb);
1495 dev->stats.rx_packets++;
1496 dev->stats.rx_bytes += pkt_len;
1497 if (pkt_stat & ENRSR_PHY)
1498 dev->stats.multicast++;
1499 }
1500 }
1501 else
1502 {
1503 if (ei_debug)
1504 printk(KERN_DEBUG "%s: bogus packet: status=%#2x nxpg=%#2x size=%d\n",
1505 dev->name, rx_frame.status, rx_frame.next,
1506 rx_frame.count);
1507 dev->stats.rx_errors++;
1508 /* NB: The NIC counts CRC, frame and missed errors. */
1509 if (pkt_stat & ENRSR_FO)
1510 dev->stats.rx_fifo_errors++;
1511 }
1512 next_frame = rx_frame.next;
1513
1514 /* This _should_ never happen: it's here for avoiding bad clones. */
1515 if (next_frame >= ei_local->stop_page) {
1516 printk("%s: next frame inconsistency, %#2x\n", dev->name,
1517 next_frame);
1518 next_frame = ei_local->rx_start_page;
1519 }
1520 ei_local->current_page = next_frame;
1521 outb_p(next_frame-1, e8390_base+EN0_BOUNDARY);
1522 }
1523
1524 return;
1525 }
1526
1527 /**
1528 * ei_rx_overrun - handle receiver overrun
1529 * @dev: network device which threw exception
1530 *
1531 * We have a receiver overrun: we have to kick the 8390 to get it started
1532 * again. Problem is that you have to kick it exactly as NS prescribes in
1533 * the updated datasheets, or "the NIC may act in an unpredictable manner."
1534 * This includes causing "the NIC to defer indefinitely when it is stopped
1535 * on a busy network." Ugh.
1536 * Called with lock held. Don't call this with the interrupts off or your
1537 * computer will hate you - it takes 10ms or so.
1538 */
1539
ei_rx_overrun(struct net_device * dev)1540 static void ei_rx_overrun(struct net_device *dev)
1541 {
1542 axnet_dev_t *info = PRIV(dev);
1543 long e8390_base = dev->base_addr;
1544 unsigned char was_txing, must_resend = 0;
1545
1546 /*
1547 * Record whether a Tx was in progress and then issue the
1548 * stop command.
1549 */
1550 was_txing = inb_p(e8390_base+E8390_CMD) & E8390_TRANS;
1551 outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD);
1552
1553 if (ei_debug > 1)
1554 printk(KERN_DEBUG "%s: Receiver overrun.\n", dev->name);
1555 dev->stats.rx_over_errors++;
1556
1557 /*
1558 * Wait a full Tx time (1.2ms) + some guard time, NS says 1.6ms total.
1559 * Early datasheets said to poll the reset bit, but now they say that
1560 * it "is not a reliable indicator and subsequently should be ignored."
1561 * We wait at least 10ms.
1562 */
1563
1564 mdelay(10);
1565
1566 /*
1567 * Reset RBCR[01] back to zero as per magic incantation.
1568 */
1569 outb_p(0x00, e8390_base+EN0_RCNTLO);
1570 outb_p(0x00, e8390_base+EN0_RCNTHI);
1571
1572 /*
1573 * See if any Tx was interrupted or not. According to NS, this
1574 * step is vital, and skipping it will cause no end of havoc.
1575 */
1576
1577 if (was_txing)
1578 {
1579 unsigned char tx_completed = inb_p(e8390_base+EN0_ISR) & (ENISR_TX+ENISR_TX_ERR);
1580 if (!tx_completed)
1581 must_resend = 1;
1582 }
1583
1584 /*
1585 * Have to enter loopback mode and then restart the NIC before
1586 * you are allowed to slurp packets up off the ring.
1587 */
1588 outb_p(E8390_TXOFF, e8390_base + EN0_TXCR);
1589 outb_p(E8390_NODMA + E8390_PAGE0 + E8390_START, e8390_base + E8390_CMD);
1590
1591 /*
1592 * Clear the Rx ring of all the debris, and ack the interrupt.
1593 */
1594 ei_receive(dev);
1595
1596 /*
1597 * Leave loopback mode, and resend any packet that got stopped.
1598 */
1599 outb_p(E8390_TXCONFIG | info->duplex_flag, e8390_base + EN0_TXCR);
1600 if (must_resend)
1601 outb_p(E8390_NODMA + E8390_PAGE0 + E8390_START + E8390_TRANS, e8390_base + E8390_CMD);
1602 }
1603
1604 /*
1605 * Collect the stats. This is called unlocked and from several contexts.
1606 */
1607
get_stats(struct net_device * dev)1608 static struct net_device_stats *get_stats(struct net_device *dev)
1609 {
1610 long ioaddr = dev->base_addr;
1611 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1612 unsigned long flags;
1613
1614 /* If the card is stopped, just return the present stats. */
1615 if (!netif_running(dev))
1616 return &dev->stats;
1617
1618 spin_lock_irqsave(&ei_local->page_lock,flags);
1619 /* Read the counter registers, assuming we are in page 0. */
1620 dev->stats.rx_frame_errors += inb_p(ioaddr + EN0_COUNTER0);
1621 dev->stats.rx_crc_errors += inb_p(ioaddr + EN0_COUNTER1);
1622 dev->stats.rx_missed_errors+= inb_p(ioaddr + EN0_COUNTER2);
1623 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1624
1625 return &dev->stats;
1626 }
1627
1628 /*
1629 * Form the 64 bit 8390 multicast table from the linked list of addresses
1630 * associated with this dev structure.
1631 */
1632
make_mc_bits(u8 * bits,struct net_device * dev)1633 static inline void make_mc_bits(u8 *bits, struct net_device *dev)
1634 {
1635 struct dev_mc_list *dmi;
1636 u32 crc;
1637
1638 for (dmi=dev->mc_list; dmi; dmi=dmi->next) {
1639
1640 crc = ether_crc(ETH_ALEN, dmi->dmi_addr);
1641 /*
1642 * The 8390 uses the 6 most significant bits of the
1643 * CRC to index the multicast table.
1644 */
1645 bits[crc>>29] |= (1<<((crc>>26)&7));
1646 }
1647 }
1648
1649 /**
1650 * do_set_multicast_list - set/clear multicast filter
1651 * @dev: net device for which multicast filter is adjusted
1652 *
1653 * Set or clear the multicast filter for this adaptor.
1654 * Must be called with lock held.
1655 */
1656
do_set_multicast_list(struct net_device * dev)1657 static void do_set_multicast_list(struct net_device *dev)
1658 {
1659 long e8390_base = dev->base_addr;
1660 int i;
1661 struct ei_device *ei_local = (struct ei_device*)netdev_priv(dev);
1662
1663 if (!(dev->flags&(IFF_PROMISC|IFF_ALLMULTI))) {
1664 memset(ei_local->mcfilter, 0, 8);
1665 if (dev->mc_list)
1666 make_mc_bits(ei_local->mcfilter, dev);
1667 } else {
1668 /* set to accept-all */
1669 memset(ei_local->mcfilter, 0xFF, 8);
1670 }
1671
1672 outb_p(E8390_NODMA + E8390_PAGE1, e8390_base + E8390_CMD);
1673 for(i = 0; i < 8; i++)
1674 {
1675 outb_p(ei_local->mcfilter[i], e8390_base + EN1_MULT_SHIFT(i));
1676 }
1677 outb_p(E8390_NODMA + E8390_PAGE0, e8390_base + E8390_CMD);
1678
1679 if(dev->flags&IFF_PROMISC)
1680 outb_p(E8390_RXCONFIG | 0x58, e8390_base + EN0_RXCR);
1681 else if(dev->flags&IFF_ALLMULTI || dev->mc_list)
1682 outb_p(E8390_RXCONFIG | 0x48, e8390_base + EN0_RXCR);
1683 else
1684 outb_p(E8390_RXCONFIG | 0x40, e8390_base + EN0_RXCR);
1685
1686 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, e8390_base+E8390_CMD);
1687 }
1688
1689 /*
1690 * Called without lock held. This is invoked from user context and may
1691 * be parallel to just about everything else. Its also fairly quick and
1692 * not called too often. Must protect against both bh and irq users
1693 */
1694
set_multicast_list(struct net_device * dev)1695 static void set_multicast_list(struct net_device *dev)
1696 {
1697 unsigned long flags;
1698
1699 spin_lock_irqsave(&dev_lock(dev), flags);
1700 do_set_multicast_list(dev);
1701 spin_unlock_irqrestore(&dev_lock(dev), flags);
1702 }
1703
1704 /**
1705 * axdev_setup - init rest of 8390 device struct
1706 * @dev: network device structure to init
1707 *
1708 * Initialize the rest of the 8390 device structure. Do NOT __init
1709 * this, as it is used by 8390 based modular drivers too.
1710 */
1711
axdev_setup(struct net_device * dev)1712 static void axdev_setup(struct net_device *dev)
1713 {
1714 struct ei_device *ei_local;
1715 if (ei_debug > 1)
1716 printk(version_8390);
1717
1718 ei_local = (struct ei_device *)netdev_priv(dev);
1719 spin_lock_init(&ei_local->page_lock);
1720
1721 dev->hard_start_xmit = &axnet_start_xmit;
1722 dev->get_stats = get_stats;
1723 dev->set_multicast_list = &set_multicast_list;
1724
1725 ether_setup(dev);
1726 }
1727
1728 /* This page of functions should be 8390 generic */
1729 /* Follow National Semi's recommendations for initializing the "NIC". */
1730
1731 /**
1732 * AX88190_init - initialize 8390 hardware
1733 * @dev: network device to initialize
1734 * @startp: boolean. non-zero value to initiate chip processing
1735 *
1736 * Must be called with lock held.
1737 */
1738
AX88190_init(struct net_device * dev,int startp)1739 static void AX88190_init(struct net_device *dev, int startp)
1740 {
1741 axnet_dev_t *info = PRIV(dev);
1742 long e8390_base = dev->base_addr;
1743 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1744 int i;
1745 int endcfg = ei_local->word16 ? (0x48 | ENDCFG_WTS) : 0x48;
1746
1747 if(sizeof(struct e8390_pkt_hdr)!=4)
1748 panic("8390.c: header struct mispacked\n");
1749 /* Follow National Semi's recommendations for initing the DP83902. */
1750 outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD); /* 0x21 */
1751 outb_p(endcfg, e8390_base + EN0_DCFG); /* 0x48 or 0x49 */
1752 /* Clear the remote byte count registers. */
1753 outb_p(0x00, e8390_base + EN0_RCNTLO);
1754 outb_p(0x00, e8390_base + EN0_RCNTHI);
1755 /* Set to monitor and loopback mode -- this is vital!. */
1756 outb_p(E8390_RXOFF|0x40, e8390_base + EN0_RXCR); /* 0x60 */
1757 outb_p(E8390_TXOFF, e8390_base + EN0_TXCR); /* 0x02 */
1758 /* Set the transmit page and receive ring. */
1759 outb_p(ei_local->tx_start_page, e8390_base + EN0_TPSR);
1760 ei_local->tx1 = ei_local->tx2 = 0;
1761 outb_p(ei_local->rx_start_page, e8390_base + EN0_STARTPG);
1762 outb_p(ei_local->stop_page-1, e8390_base + EN0_BOUNDARY); /* 3c503 says 0x3f,NS0x26*/
1763 ei_local->current_page = ei_local->rx_start_page; /* assert boundary+1 */
1764 outb_p(ei_local->stop_page, e8390_base + EN0_STOPPG);
1765 /* Clear the pending interrupts and mask. */
1766 outb_p(0xFF, e8390_base + EN0_ISR);
1767 outb_p(0x00, e8390_base + EN0_IMR);
1768
1769 /* Copy the station address into the DS8390 registers. */
1770
1771 outb_p(E8390_NODMA + E8390_PAGE1 + E8390_STOP, e8390_base+E8390_CMD); /* 0x61 */
1772 for(i = 0; i < 6; i++)
1773 {
1774 outb_p(dev->dev_addr[i], e8390_base + EN1_PHYS_SHIFT(i));
1775 if(inb_p(e8390_base + EN1_PHYS_SHIFT(i))!=dev->dev_addr[i])
1776 printk(KERN_ERR "Hw. address read/write mismap %d\n",i);
1777 }
1778
1779 outb_p(ei_local->rx_start_page, e8390_base + EN1_CURPAG);
1780 outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD);
1781
1782 netif_start_queue(dev);
1783 ei_local->tx1 = ei_local->tx2 = 0;
1784 ei_local->txing = 0;
1785
1786 if (startp)
1787 {
1788 outb_p(0xff, e8390_base + EN0_ISR);
1789 outb_p(ENISR_ALL, e8390_base + EN0_IMR);
1790 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, e8390_base+E8390_CMD);
1791 outb_p(E8390_TXCONFIG | info->duplex_flag,
1792 e8390_base + EN0_TXCR); /* xmit on. */
1793 /* 3c503 TechMan says rxconfig only after the NIC is started. */
1794 outb_p(E8390_RXCONFIG | 0x40, e8390_base + EN0_RXCR); /* rx on, */
1795 do_set_multicast_list(dev); /* (re)load the mcast table */
1796 }
1797 }
1798
1799 /* Trigger a transmit start, assuming the length is valid.
1800 Always called with the page lock held */
1801
NS8390_trigger_send(struct net_device * dev,unsigned int length,int start_page)1802 static void NS8390_trigger_send(struct net_device *dev, unsigned int length,
1803 int start_page)
1804 {
1805 long e8390_base = dev->base_addr;
1806 struct ei_device *ei_local __attribute((unused)) = (struct ei_device *) netdev_priv(dev);
1807
1808 if (inb_p(e8390_base) & E8390_TRANS)
1809 {
1810 printk(KERN_WARNING "%s: trigger_send() called with the transmitter busy.\n",
1811 dev->name);
1812 return;
1813 }
1814 outb_p(length & 0xff, e8390_base + EN0_TCNTLO);
1815 outb_p(length >> 8, e8390_base + EN0_TCNTHI);
1816 outb_p(start_page, e8390_base + EN0_TPSR);
1817 outb_p(E8390_NODMA+E8390_TRANS+E8390_START, e8390_base+E8390_CMD);
1818 }
1819