1 | // SPDX-License-Identifier: GPL-1.0+ |
2 | |
3 | /*====================================================================== |
4 | |
5 | A PCMCIA ethernet driver for Asix AX88190-based cards |
6 | |
7 | The Asix AX88190 is a NS8390-derived chipset with a few nasty |
8 | idiosyncracies that make it very inconvenient to support with a |
9 | standard 8390 driver. This driver is based on pcnet_cs, with the |
10 | tweaked 8390 code grafted on the end. Much of what I did was to |
11 | clean up and update a similar driver supplied by Asix, which was |
12 | adapted by William Lee, william@asix.com.tw. |
13 | |
14 | Copyright (C) 2001 David A. Hinds -- dahinds@users.sourceforge.net |
15 | |
16 | axnet_cs.c 1.28 2002/06/29 06:27:37 |
17 | |
18 | The network driver code is based on Donald Becker's NE2000 code: |
19 | |
20 | Written 1992,1993 by Donald Becker. |
21 | Copyright 1993 United States Government as represented by the |
22 | Director, National Security Agency. |
23 | Donald Becker may be reached at becker@scyld.com |
24 | |
25 | ======================================================================*/ |
26 | |
27 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
28 | |
29 | #include <linux/kernel.h> |
30 | #include <linux/module.h> |
31 | #include <linux/ptrace.h> |
32 | #include <linux/string.h> |
33 | #include <linux/timer.h> |
34 | #include <linux/delay.h> |
35 | #include <linux/spinlock.h> |
36 | #include <linux/netdevice.h> |
37 | #include <linux/etherdevice.h> |
38 | #include <linux/crc32.h> |
39 | #include <linux/mii.h> |
40 | #include "8390.h" |
41 | |
42 | #include <pcmcia/cistpl.h> |
43 | #include <pcmcia/ciscode.h> |
44 | #include <pcmcia/ds.h> |
45 | #include <pcmcia/cisreg.h> |
46 | |
47 | #include <asm/io.h> |
48 | #include <asm/byteorder.h> |
49 | #include <linux/uaccess.h> |
50 | |
51 | #define AXNET_CMD 0x00 |
52 | #define AXNET_DATAPORT 0x10 /* NatSemi-defined port window offset. */ |
53 | #define AXNET_RESET 0x1f /* Issue a read to reset, a write to clear. */ |
54 | #define AXNET_MII_EEP 0x14 /* Offset of MII access port */ |
55 | #define AXNET_TEST 0x15 /* Offset of TEST Register port */ |
56 | #define AXNET_GPIO 0x17 /* Offset of General Purpose Register Port */ |
57 | |
58 | #define AXNET_START_PG 0x40 /* First page of TX buffer */ |
59 | #define AXNET_STOP_PG 0x80 /* Last page +1 of RX ring */ |
60 | |
61 | #define AXNET_RDC_TIMEOUT 0x02 /* Max wait in jiffies for Tx RDC */ |
62 | |
63 | #define IS_AX88190 0x0001 |
64 | #define IS_AX88790 0x0002 |
65 | |
66 | /*====================================================================*/ |
67 | |
68 | /* Module parameters */ |
69 | |
70 | MODULE_AUTHOR("David Hinds <dahinds@users.sourceforge.net>" ); |
71 | MODULE_DESCRIPTION("Asix AX88190 PCMCIA ethernet driver" ); |
72 | MODULE_LICENSE("GPL" ); |
73 | |
74 | |
75 | /*====================================================================*/ |
76 | |
77 | static int axnet_config(struct pcmcia_device *link); |
78 | static void axnet_release(struct pcmcia_device *link); |
79 | static int axnet_open(struct net_device *dev); |
80 | static int axnet_close(struct net_device *dev); |
81 | static int axnet_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); |
82 | static netdev_tx_t axnet_start_xmit(struct sk_buff *skb, |
83 | struct net_device *dev); |
84 | static struct net_device_stats *get_stats(struct net_device *dev); |
85 | static void set_multicast_list(struct net_device *dev); |
86 | static void axnet_tx_timeout(struct net_device *dev, unsigned int txqueue); |
87 | static irqreturn_t ei_irq_wrapper(int irq, void *dev_id); |
88 | static void ei_watchdog(struct timer_list *t); |
89 | static void axnet_reset_8390(struct net_device *dev); |
90 | |
91 | static int mdio_read(unsigned int addr, int phy_id, int loc); |
92 | static void mdio_write(unsigned int addr, int phy_id, int loc, int value); |
93 | |
94 | static void get_8390_hdr(struct net_device *, |
95 | struct e8390_pkt_hdr *, int); |
96 | static void block_input(struct net_device *dev, int count, |
97 | struct sk_buff *skb, int ring_offset); |
98 | static void block_output(struct net_device *dev, int count, |
99 | const u_char *buf, const int start_page); |
100 | |
101 | static void axnet_detach(struct pcmcia_device *p_dev); |
102 | |
103 | static void AX88190_init(struct net_device *dev, int startp); |
104 | static int ax_open(struct net_device *dev); |
105 | static int ax_close(struct net_device *dev); |
106 | static irqreturn_t ax_interrupt(int irq, void *dev_id); |
107 | |
108 | /*====================================================================*/ |
109 | |
110 | struct axnet_dev { |
111 | struct pcmcia_device *p_dev; |
112 | caddr_t base; |
113 | struct timer_list watchdog; |
114 | int stale, fast_poll; |
115 | u_short link_status; |
116 | u_char duplex_flag; |
117 | int phy_id; |
118 | int flags; |
119 | int active_low; |
120 | }; |
121 | |
122 | static inline struct axnet_dev *PRIV(struct net_device *dev) |
123 | { |
124 | void *p = (char *)netdev_priv(dev) + sizeof(struct ei_device); |
125 | return p; |
126 | } |
127 | |
128 | static const struct net_device_ops axnet_netdev_ops = { |
129 | .ndo_open = axnet_open, |
130 | .ndo_stop = axnet_close, |
131 | .ndo_eth_ioctl = axnet_ioctl, |
132 | .ndo_start_xmit = axnet_start_xmit, |
133 | .ndo_tx_timeout = axnet_tx_timeout, |
134 | .ndo_get_stats = get_stats, |
135 | .ndo_set_rx_mode = set_multicast_list, |
136 | .ndo_set_mac_address = eth_mac_addr, |
137 | .ndo_validate_addr = eth_validate_addr, |
138 | }; |
139 | |
140 | static int axnet_probe(struct pcmcia_device *link) |
141 | { |
142 | struct axnet_dev *info; |
143 | struct net_device *dev; |
144 | struct ei_device *ei_local; |
145 | |
146 | dev_dbg(&link->dev, "axnet_attach()\n" ); |
147 | |
148 | dev = alloc_etherdev(sizeof(struct ei_device) + sizeof(struct axnet_dev)); |
149 | if (!dev) |
150 | return -ENOMEM; |
151 | |
152 | ei_local = netdev_priv(dev); |
153 | spin_lock_init(&ei_local->page_lock); |
154 | |
155 | info = PRIV(dev); |
156 | info->p_dev = link; |
157 | link->priv = dev; |
158 | link->config_flags |= CONF_ENABLE_IRQ; |
159 | |
160 | dev->netdev_ops = &axnet_netdev_ops; |
161 | |
162 | dev->watchdog_timeo = TX_TIMEOUT; |
163 | |
164 | return axnet_config(link); |
165 | } /* axnet_attach */ |
166 | |
167 | static void axnet_detach(struct pcmcia_device *link) |
168 | { |
169 | struct net_device *dev = link->priv; |
170 | |
171 | dev_dbg(&link->dev, "axnet_detach(0x%p)\n" , link); |
172 | |
173 | unregister_netdev(dev); |
174 | |
175 | axnet_release(link); |
176 | |
177 | free_netdev(dev); |
178 | } /* axnet_detach */ |
179 | |
180 | /*====================================================================== |
181 | |
182 | This probes for a card's hardware address by reading the PROM. |
183 | |
184 | ======================================================================*/ |
185 | |
186 | static int get_prom(struct pcmcia_device *link) |
187 | { |
188 | struct net_device *dev = link->priv; |
189 | unsigned int ioaddr = dev->base_addr; |
190 | u8 addr[ETH_ALEN]; |
191 | int i, j; |
192 | |
193 | /* This is based on drivers/net/ethernet/8390/ne.c */ |
194 | struct { |
195 | u_char value, offset; |
196 | } program_seq[] = { |
197 | {E8390_NODMA+E8390_PAGE0+E8390_STOP, E8390_CMD}, /* Select page 0*/ |
198 | {0x01, EN0_DCFG}, /* Set word-wide access. */ |
199 | {0x00, EN0_RCNTLO}, /* Clear the count regs. */ |
200 | {0x00, EN0_RCNTHI}, |
201 | {0x00, EN0_IMR}, /* Mask completion irq. */ |
202 | {0xFF, EN0_ISR}, |
203 | {E8390_RXOFF|0x40, EN0_RXCR}, /* 0x60 Set to monitor */ |
204 | {E8390_TXOFF, EN0_TXCR}, /* 0x02 and loopback mode. */ |
205 | {0x10, EN0_RCNTLO}, |
206 | {0x00, EN0_RCNTHI}, |
207 | {0x00, EN0_RSARLO}, /* DMA starting at 0x0400. */ |
208 | {0x04, EN0_RSARHI}, |
209 | {E8390_RREAD+E8390_START, E8390_CMD}, |
210 | }; |
211 | |
212 | /* Not much of a test, but the alternatives are messy */ |
213 | if (link->config_base != 0x03c0) |
214 | return 0; |
215 | |
216 | axnet_reset_8390(dev); |
217 | mdelay(10); |
218 | |
219 | for (i = 0; i < ARRAY_SIZE(program_seq); i++) |
220 | outb_p(value: program_seq[i].value, port: ioaddr + program_seq[i].offset); |
221 | |
222 | for (i = 0; i < 6; i += 2) { |
223 | j = inw(port: ioaddr + AXNET_DATAPORT); |
224 | addr[i] = j & 0xff; |
225 | addr[i+1] = j >> 8; |
226 | } |
227 | eth_hw_addr_set(dev, addr); |
228 | |
229 | return 1; |
230 | } /* get_prom */ |
231 | |
232 | static int try_io_port(struct pcmcia_device *link) |
233 | { |
234 | int j, ret; |
235 | link->resource[0]->flags &= ~IO_DATA_PATH_WIDTH; |
236 | link->resource[1]->flags &= ~IO_DATA_PATH_WIDTH; |
237 | if (link->resource[0]->end == 32) { |
238 | link->resource[0]->flags |= IO_DATA_PATH_WIDTH_AUTO; |
239 | /* for master/slave multifunction cards */ |
240 | if (link->resource[1]->end > 0) |
241 | link->resource[1]->flags |= IO_DATA_PATH_WIDTH_8; |
242 | } else { |
243 | /* This should be two 16-port windows */ |
244 | link->resource[0]->flags |= IO_DATA_PATH_WIDTH_8; |
245 | link->resource[1]->flags |= IO_DATA_PATH_WIDTH_16; |
246 | } |
247 | if (link->resource[0]->start == 0) { |
248 | for (j = 0; j < 0x400; j += 0x20) { |
249 | link->resource[0]->start = j ^ 0x300; |
250 | link->resource[1]->start = (j ^ 0x300) + 0x10; |
251 | link->io_lines = 16; |
252 | ret = pcmcia_request_io(p_dev: link); |
253 | if (ret == 0) |
254 | return ret; |
255 | } |
256 | return ret; |
257 | } else { |
258 | return pcmcia_request_io(p_dev: link); |
259 | } |
260 | } |
261 | |
262 | static int axnet_configcheck(struct pcmcia_device *p_dev, void *priv_data) |
263 | { |
264 | if (p_dev->config_index == 0) |
265 | return -EINVAL; |
266 | |
267 | p_dev->config_index = 0x05; |
268 | if (p_dev->resource[0]->end + p_dev->resource[1]->end < 32) |
269 | return -ENODEV; |
270 | |
271 | return try_io_port(link: p_dev); |
272 | } |
273 | |
274 | static int axnet_config(struct pcmcia_device *link) |
275 | { |
276 | struct net_device *dev = link->priv; |
277 | struct axnet_dev *info = PRIV(dev); |
278 | int i, j, j2, ret; |
279 | |
280 | dev_dbg(&link->dev, "axnet_config(0x%p)\n" , link); |
281 | |
282 | /* don't trust the CIS on this; Linksys got it wrong */ |
283 | link->config_regs = 0x63; |
284 | link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_IO; |
285 | ret = pcmcia_loop_config(p_dev: link, conf_check: axnet_configcheck, NULL); |
286 | if (ret != 0) |
287 | goto failed; |
288 | |
289 | if (!link->irq) |
290 | goto failed; |
291 | |
292 | if (resource_size(res: link->resource[1]) == 8) |
293 | link->config_flags |= CONF_ENABLE_SPKR; |
294 | |
295 | ret = pcmcia_enable_device(p_dev: link); |
296 | if (ret) |
297 | goto failed; |
298 | |
299 | dev->irq = link->irq; |
300 | dev->base_addr = link->resource[0]->start; |
301 | |
302 | if (!get_prom(link)) { |
303 | pr_notice("this is not an AX88190 card!\n" ); |
304 | pr_notice("use pcnet_cs instead.\n" ); |
305 | goto failed; |
306 | } |
307 | |
308 | ei_status.name = "AX88190" ; |
309 | ei_status.word16 = 1; |
310 | ei_status.tx_start_page = AXNET_START_PG; |
311 | ei_status.rx_start_page = AXNET_START_PG + TX_PAGES; |
312 | ei_status.stop_page = AXNET_STOP_PG; |
313 | ei_status.reset_8390 = axnet_reset_8390; |
314 | ei_status.get_8390_hdr = get_8390_hdr; |
315 | ei_status.block_input = block_input; |
316 | ei_status.block_output = block_output; |
317 | |
318 | if (inb(port: dev->base_addr + AXNET_TEST) != 0) |
319 | info->flags |= IS_AX88790; |
320 | else |
321 | info->flags |= IS_AX88190; |
322 | |
323 | if (info->flags & IS_AX88790) |
324 | outb(value: 0x10, port: dev->base_addr + AXNET_GPIO); /* select Internal PHY */ |
325 | |
326 | info->active_low = 0; |
327 | |
328 | for (i = 0; i < 32; i++) { |
329 | j = mdio_read(addr: dev->base_addr + AXNET_MII_EEP, phy_id: i, loc: 1); |
330 | j2 = mdio_read(addr: dev->base_addr + AXNET_MII_EEP, phy_id: i, loc: 2); |
331 | if (j == j2) continue; |
332 | if ((j != 0) && (j != 0xffff)) break; |
333 | } |
334 | |
335 | if (i == 32) { |
336 | /* Maybe PHY is in power down mode. (PPD_SET = 1) |
337 | Bit 2 of CCSR is active low. */ |
338 | pcmcia_write_config_byte(p_dev: link, CISREG_CCSR, val: 0x04); |
339 | for (i = 0; i < 32; i++) { |
340 | j = mdio_read(addr: dev->base_addr + AXNET_MII_EEP, phy_id: i, loc: 1); |
341 | j2 = mdio_read(addr: dev->base_addr + AXNET_MII_EEP, phy_id: i, loc: 2); |
342 | if (j == j2) continue; |
343 | if ((j != 0) && (j != 0xffff)) { |
344 | info->active_low = 1; |
345 | break; |
346 | } |
347 | } |
348 | } |
349 | |
350 | info->phy_id = (i < 32) ? i : -1; |
351 | SET_NETDEV_DEV(dev, &link->dev); |
352 | |
353 | if (register_netdev(dev) != 0) { |
354 | pr_notice("register_netdev() failed\n" ); |
355 | goto failed; |
356 | } |
357 | |
358 | netdev_info(dev, format: "Asix AX88%d90: io %#3lx, irq %d, hw_addr %pM\n" , |
359 | ((info->flags & IS_AX88790) ? 7 : 1), |
360 | dev->base_addr, dev->irq, dev->dev_addr); |
361 | if (info->phy_id != -1) { |
362 | netdev_dbg(dev, " MII transceiver at index %d, status %x\n" , |
363 | info->phy_id, j); |
364 | } else { |
365 | netdev_notice(dev, format: " No MII transceivers found!\n" ); |
366 | } |
367 | return 0; |
368 | |
369 | failed: |
370 | axnet_release(link); |
371 | return -ENODEV; |
372 | } /* axnet_config */ |
373 | |
374 | static void axnet_release(struct pcmcia_device *link) |
375 | { |
376 | pcmcia_disable_device(p_dev: link); |
377 | } |
378 | |
379 | static int axnet_suspend(struct pcmcia_device *link) |
380 | { |
381 | struct net_device *dev = link->priv; |
382 | |
383 | if (link->open) |
384 | netif_device_detach(dev); |
385 | |
386 | return 0; |
387 | } |
388 | |
389 | static int axnet_resume(struct pcmcia_device *link) |
390 | { |
391 | struct net_device *dev = link->priv; |
392 | struct axnet_dev *info = PRIV(dev); |
393 | |
394 | if (link->open) { |
395 | if (info->active_low == 1) |
396 | pcmcia_write_config_byte(p_dev: link, CISREG_CCSR, val: 0x04); |
397 | |
398 | axnet_reset_8390(dev); |
399 | AX88190_init(dev, startp: 1); |
400 | netif_device_attach(dev); |
401 | } |
402 | |
403 | return 0; |
404 | } |
405 | |
406 | |
407 | /*====================================================================== |
408 | |
409 | MII interface support |
410 | |
411 | ======================================================================*/ |
412 | |
413 | #define MDIO_SHIFT_CLK 0x01 |
414 | #define MDIO_DATA_WRITE0 0x00 |
415 | #define MDIO_DATA_WRITE1 0x08 |
416 | #define MDIO_DATA_READ 0x04 |
417 | #define MDIO_MASK 0x0f |
418 | #define MDIO_ENB_IN 0x02 |
419 | |
420 | static void mdio_sync(unsigned int addr) |
421 | { |
422 | int bits; |
423 | for (bits = 0; bits < 32; bits++) { |
424 | outb_p(MDIO_DATA_WRITE1, port: addr); |
425 | outb_p(MDIO_DATA_WRITE1 | MDIO_SHIFT_CLK, port: addr); |
426 | } |
427 | } |
428 | |
429 | static int mdio_read(unsigned int addr, int phy_id, int loc) |
430 | { |
431 | u_int cmd = (0xf6<<10)|(phy_id<<5)|loc; |
432 | int i, retval = 0; |
433 | |
434 | mdio_sync(addr); |
435 | for (i = 14; i >= 0; i--) { |
436 | int dat = (cmd&(1<<i)) ? MDIO_DATA_WRITE1 : MDIO_DATA_WRITE0; |
437 | outb_p(value: dat, port: addr); |
438 | outb_p(value: dat | MDIO_SHIFT_CLK, port: addr); |
439 | } |
440 | for (i = 19; i > 0; i--) { |
441 | outb_p(MDIO_ENB_IN, port: addr); |
442 | retval = (retval << 1) | ((inb_p(port: addr) & MDIO_DATA_READ) != 0); |
443 | outb_p(MDIO_ENB_IN | MDIO_SHIFT_CLK, port: addr); |
444 | } |
445 | return (retval>>1) & 0xffff; |
446 | } |
447 | |
448 | static void mdio_write(unsigned int addr, int phy_id, int loc, int value) |
449 | { |
450 | u_int cmd = (0x05<<28)|(phy_id<<23)|(loc<<18)|(1<<17)|value; |
451 | int i; |
452 | |
453 | mdio_sync(addr); |
454 | for (i = 31; i >= 0; i--) { |
455 | int dat = (cmd&(1<<i)) ? MDIO_DATA_WRITE1 : MDIO_DATA_WRITE0; |
456 | outb_p(value: dat, port: addr); |
457 | outb_p(value: dat | MDIO_SHIFT_CLK, port: addr); |
458 | } |
459 | for (i = 1; i >= 0; i--) { |
460 | outb_p(MDIO_ENB_IN, port: addr); |
461 | outb_p(MDIO_ENB_IN | MDIO_SHIFT_CLK, port: addr); |
462 | } |
463 | } |
464 | |
465 | /*====================================================================*/ |
466 | |
467 | static int axnet_open(struct net_device *dev) |
468 | { |
469 | int ret; |
470 | struct axnet_dev *info = PRIV(dev); |
471 | struct pcmcia_device *link = info->p_dev; |
472 | unsigned int nic_base = dev->base_addr; |
473 | |
474 | dev_dbg(&link->dev, "axnet_open('%s')\n" , dev->name); |
475 | |
476 | if (!pcmcia_dev_present(p_dev: link)) |
477 | return -ENODEV; |
478 | |
479 | outb_p(value: 0xFF, port: nic_base + EN0_ISR); /* Clear bogus intr. */ |
480 | ret = request_irq(irq: dev->irq, handler: ei_irq_wrapper, IRQF_SHARED, name: "axnet_cs" , dev); |
481 | if (ret) |
482 | return ret; |
483 | |
484 | link->open++; |
485 | |
486 | info->link_status = 0x00; |
487 | timer_setup(&info->watchdog, ei_watchdog, 0); |
488 | mod_timer(timer: &info->watchdog, expires: jiffies + HZ); |
489 | |
490 | return ax_open(dev); |
491 | } /* axnet_open */ |
492 | |
493 | /*====================================================================*/ |
494 | |
495 | static int axnet_close(struct net_device *dev) |
496 | { |
497 | struct axnet_dev *info = PRIV(dev); |
498 | struct pcmcia_device *link = info->p_dev; |
499 | |
500 | dev_dbg(&link->dev, "axnet_close('%s')\n" , dev->name); |
501 | |
502 | ax_close(dev); |
503 | free_irq(dev->irq, dev); |
504 | |
505 | link->open--; |
506 | netif_stop_queue(dev); |
507 | del_timer_sync(timer: &info->watchdog); |
508 | |
509 | return 0; |
510 | } /* axnet_close */ |
511 | |
512 | /*====================================================================== |
513 | |
514 | Hard reset the card. This used to pause for the same period that |
515 | a 8390 reset command required, but that shouldn't be necessary. |
516 | |
517 | ======================================================================*/ |
518 | |
519 | static void axnet_reset_8390(struct net_device *dev) |
520 | { |
521 | unsigned int nic_base = dev->base_addr; |
522 | int i; |
523 | |
524 | ei_status.txing = ei_status.dmaing = 0; |
525 | |
526 | outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, port: nic_base + E8390_CMD); |
527 | |
528 | outb(inb(port: nic_base + AXNET_RESET), port: nic_base + AXNET_RESET); |
529 | |
530 | for (i = 0; i < 100; i++) { |
531 | if ((inb_p(port: nic_base+EN0_ISR) & ENISR_RESET) != 0) |
532 | break; |
533 | udelay(100); |
534 | } |
535 | outb_p(ENISR_RESET, port: nic_base + EN0_ISR); /* Ack intr. */ |
536 | |
537 | if (i == 100) |
538 | netdev_err(dev, format: "axnet_reset_8390() did not complete\n" ); |
539 | |
540 | } /* axnet_reset_8390 */ |
541 | |
542 | /*====================================================================*/ |
543 | |
544 | static irqreturn_t ei_irq_wrapper(int irq, void *dev_id) |
545 | { |
546 | struct net_device *dev = dev_id; |
547 | PRIV(dev)->stale = 0; |
548 | return ax_interrupt(irq, dev_id); |
549 | } |
550 | |
551 | static void ei_watchdog(struct timer_list *t) |
552 | { |
553 | struct axnet_dev *info = from_timer(info, t, watchdog); |
554 | struct net_device *dev = info->p_dev->priv; |
555 | unsigned int nic_base = dev->base_addr; |
556 | unsigned int mii_addr = nic_base + AXNET_MII_EEP; |
557 | u_short link; |
558 | |
559 | if (!netif_device_present(dev)) goto reschedule; |
560 | |
561 | /* Check for pending interrupt with expired latency timer: with |
562 | this, we can limp along even if the interrupt is blocked */ |
563 | if (info->stale++ && (inb_p(port: nic_base + EN0_ISR) & ENISR_ALL)) { |
564 | if (!info->fast_poll) |
565 | netdev_info(dev, format: "interrupt(s) dropped!\n" ); |
566 | ei_irq_wrapper(irq: dev->irq, dev_id: dev); |
567 | info->fast_poll = HZ; |
568 | } |
569 | if (info->fast_poll) { |
570 | info->fast_poll--; |
571 | info->watchdog.expires = jiffies + 1; |
572 | add_timer(timer: &info->watchdog); |
573 | return; |
574 | } |
575 | |
576 | if (info->phy_id < 0) |
577 | goto reschedule; |
578 | link = mdio_read(addr: mii_addr, phy_id: info->phy_id, loc: 1); |
579 | if (!link || (link == 0xffff)) { |
580 | netdev_info(dev, format: "MII is missing!\n" ); |
581 | info->phy_id = -1; |
582 | goto reschedule; |
583 | } |
584 | |
585 | link &= 0x0004; |
586 | if (link != info->link_status) { |
587 | u_short p = mdio_read(addr: mii_addr, phy_id: info->phy_id, loc: 5); |
588 | netdev_info(dev, format: "%s link beat\n" , link ? "found" : "lost" ); |
589 | if (link) { |
590 | info->duplex_flag = (p & 0x0140) ? 0x80 : 0x00; |
591 | if (p) |
592 | netdev_info(dev, format: "autonegotiation complete: %dbaseT-%cD selected\n" , |
593 | (p & 0x0180) ? 100 : 10, (p & 0x0140) ? 'F' : 'H'); |
594 | else |
595 | netdev_info(dev, format: "link partner did not autonegotiate\n" ); |
596 | AX88190_init(dev, startp: 1); |
597 | } |
598 | info->link_status = link; |
599 | } |
600 | |
601 | reschedule: |
602 | info->watchdog.expires = jiffies + HZ; |
603 | add_timer(timer: &info->watchdog); |
604 | } |
605 | |
606 | /*====================================================================*/ |
607 | |
608 | static int axnet_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) |
609 | { |
610 | struct axnet_dev *info = PRIV(dev); |
611 | struct mii_ioctl_data *data = if_mii(rq); |
612 | unsigned int mii_addr = dev->base_addr + AXNET_MII_EEP; |
613 | switch (cmd) { |
614 | case SIOCGMIIPHY: |
615 | data->phy_id = info->phy_id; |
616 | fallthrough; |
617 | case SIOCGMIIREG: /* Read MII PHY register. */ |
618 | data->val_out = mdio_read(addr: mii_addr, phy_id: data->phy_id, loc: data->reg_num & 0x1f); |
619 | return 0; |
620 | case SIOCSMIIREG: /* Write MII PHY register. */ |
621 | mdio_write(addr: mii_addr, phy_id: data->phy_id, loc: data->reg_num & 0x1f, value: data->val_in); |
622 | return 0; |
623 | } |
624 | return -EOPNOTSUPP; |
625 | } |
626 | |
627 | /*====================================================================*/ |
628 | |
629 | static void get_8390_hdr(struct net_device *dev, |
630 | struct e8390_pkt_hdr *hdr, |
631 | int ring_page) |
632 | { |
633 | unsigned int nic_base = dev->base_addr; |
634 | |
635 | outb_p(value: 0, port: nic_base + EN0_RSARLO); /* On page boundary */ |
636 | outb_p(value: ring_page, port: nic_base + EN0_RSARHI); |
637 | outb_p(E8390_RREAD+E8390_START, port: nic_base + AXNET_CMD); |
638 | |
639 | insw(port: nic_base + AXNET_DATAPORT, addr: hdr, |
640 | count: sizeof(struct e8390_pkt_hdr)>>1); |
641 | /* Fix for big endian systems */ |
642 | hdr->count = le16_to_cpu(hdr->count); |
643 | |
644 | } |
645 | |
646 | /*====================================================================*/ |
647 | |
648 | static void block_input(struct net_device *dev, int count, |
649 | struct sk_buff *skb, int ring_offset) |
650 | { |
651 | unsigned int nic_base = dev->base_addr; |
652 | struct ei_device *ei_local = netdev_priv(dev); |
653 | char *buf = skb->data; |
654 | |
655 | if ((netif_msg_rx_status(ei_local)) && (count != 4)) |
656 | netdev_dbg(dev, "[bi=%d]\n" , count+4); |
657 | outb_p(value: ring_offset & 0xff, port: nic_base + EN0_RSARLO); |
658 | outb_p(value: ring_offset >> 8, port: nic_base + EN0_RSARHI); |
659 | outb_p(E8390_RREAD+E8390_START, port: nic_base + AXNET_CMD); |
660 | |
661 | insw(port: nic_base + AXNET_DATAPORT,addr: buf,count: count>>1); |
662 | if (count & 0x01) { |
663 | buf[count-1] = inb(port: nic_base + AXNET_DATAPORT); |
664 | } |
665 | } |
666 | |
667 | /*====================================================================*/ |
668 | |
669 | static void block_output(struct net_device *dev, int count, |
670 | const u_char *buf, const int start_page) |
671 | { |
672 | unsigned int nic_base = dev->base_addr; |
673 | |
674 | pr_debug("%s: [bo=%d]\n" , dev->name, count); |
675 | |
676 | /* Round the count up for word writes. Do we need to do this? |
677 | What effect will an odd byte count have on the 8390? |
678 | I should check someday. */ |
679 | if (count & 0x01) |
680 | count++; |
681 | |
682 | outb_p(value: 0x00, port: nic_base + EN0_RSARLO); |
683 | outb_p(value: start_page, port: nic_base + EN0_RSARHI); |
684 | outb_p(E8390_RWRITE+E8390_START, port: nic_base + AXNET_CMD); |
685 | outsw(port: nic_base + AXNET_DATAPORT, addr: buf, count: count>>1); |
686 | } |
687 | |
688 | static const struct pcmcia_device_id axnet_ids[] = { |
689 | PCMCIA_PFC_DEVICE_MANF_CARD(0, 0x016c, 0x0081), |
690 | PCMCIA_DEVICE_MANF_CARD(0x018a, 0x0301), |
691 | PCMCIA_DEVICE_MANF_CARD(0x01bf, 0x2328), |
692 | PCMCIA_DEVICE_MANF_CARD(0x026f, 0x0301), |
693 | PCMCIA_DEVICE_MANF_CARD(0x026f, 0x0303), |
694 | PCMCIA_DEVICE_MANF_CARD(0x026f, 0x0309), |
695 | PCMCIA_DEVICE_MANF_CARD(0x0274, 0x1106), |
696 | PCMCIA_DEVICE_MANF_CARD(0x8a01, 0xc1ab), |
697 | PCMCIA_DEVICE_MANF_CARD(0x021b, 0x0202), |
698 | PCMCIA_DEVICE_MANF_CARD(0xffff, 0x1090), |
699 | PCMCIA_DEVICE_PROD_ID12("AmbiCom,Inc." , "Fast Ethernet PC Card(AMB8110)" , 0x49b020a7, 0x119cc9fc), |
700 | PCMCIA_DEVICE_PROD_ID124("Fast Ethernet" , "16-bit PC Card" , "AX88190" , 0xb4be14e3, 0x9a12eb6a, 0xab9be5ef), |
701 | PCMCIA_DEVICE_PROD_ID12("ASIX" , "AX88190" , 0x0959823b, 0xab9be5ef), |
702 | PCMCIA_DEVICE_PROD_ID12("Billionton" , "LNA-100B" , 0x552ab682, 0xbc3b87e1), |
703 | PCMCIA_DEVICE_PROD_ID12("CHEETAH ETHERCARD" , "EN2228" , 0x00fa7bc8, 0x00e990cc), |
704 | PCMCIA_DEVICE_PROD_ID12("CNet" , "CNF301" , 0xbc477dde, 0x78c5f40b), |
705 | PCMCIA_DEVICE_PROD_ID12("corega K.K." , "corega FEther PCC-TXD" , 0x5261440f, 0x436768c5), |
706 | PCMCIA_DEVICE_PROD_ID12("corega K.K." , "corega FEtherII PCC-TXD" , 0x5261440f, 0x730df72e), |
707 | PCMCIA_DEVICE_PROD_ID12("corega K.K." , "corega FEther PCC-TXM" , 0x5261440f, 0x3abbd061), |
708 | PCMCIA_DEVICE_PROD_ID12("Dynalink" , "L100C16" , 0x55632fd5, 0x66bc2a90), |
709 | PCMCIA_DEVICE_PROD_ID12("IO DATA" , "ETXPCM" , 0x547e66dc, 0x233adac2), |
710 | PCMCIA_DEVICE_PROD_ID12("Linksys" , "EtherFast 10/100 PC Card (PCMPC100 V3)" , 0x0733cc81, 0x232019a8), |
711 | PCMCIA_DEVICE_PROD_ID12("MELCO" , "LPC3-TX" , 0x481e0094, 0xf91af609), |
712 | PCMCIA_DEVICE_PROD_ID12("NETGEAR" , "FA411" , 0x9aa79dc3, 0x40fad875), |
713 | PCMCIA_DEVICE_PROD_ID12("PCMCIA" , "100BASE" , 0x281f1c5d, 0x7c2add04), |
714 | PCMCIA_DEVICE_PROD_ID12("PCMCIA" , "FastEtherCard" , 0x281f1c5d, 0x7ef26116), |
715 | PCMCIA_DEVICE_PROD_ID12("PCMCIA" , "FEP501" , 0x281f1c5d, 0x2e272058), |
716 | PCMCIA_DEVICE_PROD_ID14("Network Everywhere" , "AX88190" , 0x820a67b6, 0xab9be5ef), |
717 | PCMCIA_DEVICE_NULL, |
718 | }; |
719 | MODULE_DEVICE_TABLE(pcmcia, axnet_ids); |
720 | |
721 | static struct pcmcia_driver axnet_cs_driver = { |
722 | .owner = THIS_MODULE, |
723 | .name = "axnet_cs" , |
724 | .probe = axnet_probe, |
725 | .remove = axnet_detach, |
726 | .id_table = axnet_ids, |
727 | .suspend = axnet_suspend, |
728 | .resume = axnet_resume, |
729 | }; |
730 | module_pcmcia_driver(axnet_cs_driver); |
731 | |
732 | /*====================================================================*/ |
733 | |
734 | /* 8390.c: A general NS8390 ethernet driver core for linux. */ |
735 | /* |
736 | Written 1992-94 by Donald Becker. |
737 | |
738 | Copyright 1993 United States Government as represented by the |
739 | Director, National Security Agency. |
740 | |
741 | This software may be used and distributed according to the terms |
742 | of the GNU General Public License, incorporated herein by reference. |
743 | |
744 | The author may be reached as becker@scyld.com, or C/O |
745 | Scyld Computing Corporation |
746 | 410 Severn Ave., Suite 210 |
747 | Annapolis MD 21403 |
748 | |
749 | This is the chip-specific code for many 8390-based ethernet adaptors. |
750 | This is not a complete driver, it must be combined with board-specific |
751 | code such as ne.c, wd.c, 3c503.c, etc. |
752 | |
753 | Seeing how at least eight drivers use this code, (not counting the |
754 | PCMCIA ones either) it is easy to break some card by what seems like |
755 | a simple innocent change. Please contact me or Donald if you think |
756 | you have found something that needs changing. -- PG |
757 | |
758 | Changelog: |
759 | |
760 | Paul Gortmaker : remove set_bit lock, other cleanups. |
761 | Paul Gortmaker : add ei_get_8390_hdr() so we can pass skb's to |
762 | ei_block_input() for eth_io_copy_and_sum(). |
763 | Paul Gortmaker : exchange static int ei_pingpong for a #define, |
764 | also add better Tx error handling. |
765 | Paul Gortmaker : rewrite Rx overrun handling as per NS specs. |
766 | Alexey Kuznetsov : use the 8390's six bit hash multicast filter. |
767 | Paul Gortmaker : tweak ANK's above multicast changes a bit. |
768 | Paul Gortmaker : update packet statistics for v2.1.x |
769 | Alan Cox : support arbitrary stupid port mappings on the |
770 | 68K Macintosh. Support >16bit I/O spaces |
771 | Paul Gortmaker : add kmod support for auto-loading of the 8390 |
772 | module by all drivers that require it. |
773 | Alan Cox : Spinlocking work, added 'BUG_83C690' |
774 | Paul Gortmaker : Separate out Tx timeout code from Tx path. |
775 | |
776 | Sources: |
777 | The National Semiconductor LAN Databook, and the 3Com 3c503 databook. |
778 | |
779 | */ |
780 | |
781 | #include <linux/bitops.h> |
782 | #include <asm/irq.h> |
783 | #include <linux/fcntl.h> |
784 | #include <linux/in.h> |
785 | #include <linux/interrupt.h> |
786 | |
787 | #define BUG_83C690 |
788 | |
789 | /* These are the operational function interfaces to board-specific |
790 | routines. |
791 | void reset_8390(struct net_device *dev) |
792 | Resets the board associated with DEV, including a hardware reset of |
793 | the 8390. This is only called when there is a transmit timeout, and |
794 | it is always followed by 8390_init(). |
795 | void block_output(struct net_device *dev, int count, const unsigned char *buf, |
796 | int start_page) |
797 | Write the COUNT bytes of BUF to the packet buffer at START_PAGE. The |
798 | "page" value uses the 8390's 256-byte pages. |
799 | void get_8390_hdr(struct net_device *dev, struct e8390_hdr *hdr, int ring_page) |
800 | Read the 4 byte, page aligned 8390 header. *If* there is a |
801 | subsequent read, it will be of the rest of the packet. |
802 | void block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset) |
803 | Read COUNT bytes from the packet buffer into the skb data area. Start |
804 | reading from RING_OFFSET, the address as the 8390 sees it. This will always |
805 | follow the read of the 8390 header. |
806 | */ |
807 | #define ei_reset_8390 (ei_local->reset_8390) |
808 | #define ei_block_output (ei_local->block_output) |
809 | #define ei_block_input (ei_local->block_input) |
810 | #define ei_get_8390_hdr (ei_local->get_8390_hdr) |
811 | |
812 | /* Index to functions. */ |
813 | static void ei_tx_intr(struct net_device *dev); |
814 | static void ei_tx_err(struct net_device *dev); |
815 | static void ei_receive(struct net_device *dev); |
816 | static void ei_rx_overrun(struct net_device *dev); |
817 | |
818 | /* Routines generic to NS8390-based boards. */ |
819 | static void NS8390_trigger_send(struct net_device *dev, unsigned int length, |
820 | int start_page); |
821 | static void do_set_multicast_list(struct net_device *dev); |
822 | |
823 | /* |
824 | * SMP and the 8390 setup. |
825 | * |
826 | * The 8390 isn't exactly designed to be multithreaded on RX/TX. There is |
827 | * a page register that controls bank and packet buffer access. We guard |
828 | * this with ei_local->page_lock. Nobody should assume or set the page other |
829 | * than zero when the lock is not held. Lock holders must restore page 0 |
830 | * before unlocking. Even pure readers must take the lock to protect in |
831 | * page 0. |
832 | * |
833 | * To make life difficult the chip can also be very slow. We therefore can't |
834 | * just use spinlocks. For the longer lockups we disable the irq the device |
835 | * sits on and hold the lock. We must hold the lock because there is a dual |
836 | * processor case other than interrupts (get stats/set multicast list in |
837 | * parallel with each other and transmit). |
838 | * |
839 | * Note: in theory we can just disable the irq on the card _but_ there is |
840 | * a latency on SMP irq delivery. So we can easily go "disable irq" "sync irqs" |
841 | * enter lock, take the queued irq. So we waddle instead of flying. |
842 | * |
843 | * Finally by special arrangement for the purpose of being generally |
844 | * annoying the transmit function is called bh atomic. That places |
845 | * restrictions on the user context callers as disable_irq won't save |
846 | * them. |
847 | */ |
848 | |
849 | /** |
850 | * ax_open - Open/initialize the board. |
851 | * @dev: network device to initialize |
852 | * |
853 | * This routine goes all-out, setting everything |
854 | * up anew at each open, even though many of these registers should only |
855 | * need to be set once at boot. |
856 | */ |
857 | static int ax_open(struct net_device *dev) |
858 | { |
859 | unsigned long flags; |
860 | struct ei_device *ei_local = netdev_priv(dev); |
861 | |
862 | /* |
863 | * Grab the page lock so we own the register set, then call |
864 | * the init function. |
865 | */ |
866 | |
867 | spin_lock_irqsave(&ei_local->page_lock, flags); |
868 | AX88190_init(dev, startp: 1); |
869 | /* Set the flag before we drop the lock, That way the IRQ arrives |
870 | after its set and we get no silly warnings */ |
871 | netif_start_queue(dev); |
872 | spin_unlock_irqrestore(lock: &ei_local->page_lock, flags); |
873 | ei_local->irqlock = 0; |
874 | return 0; |
875 | } |
876 | |
877 | #define dev_lock(dev) (((struct ei_device *)netdev_priv(dev))->page_lock) |
878 | |
879 | /** |
880 | * ax_close - shut down network device |
881 | * @dev: network device to close |
882 | * |
883 | * Opposite of ax_open(). Only used when "ifconfig <devname> down" is done. |
884 | */ |
885 | static int ax_close(struct net_device *dev) |
886 | { |
887 | unsigned long flags; |
888 | |
889 | /* |
890 | * Hold the page lock during close |
891 | */ |
892 | |
893 | spin_lock_irqsave(&dev_lock(dev), flags); |
894 | AX88190_init(dev, startp: 0); |
895 | spin_unlock_irqrestore(lock: &dev_lock(dev), flags); |
896 | netif_stop_queue(dev); |
897 | return 0; |
898 | } |
899 | |
900 | /** |
901 | * axnet_tx_timeout - handle transmit time out condition |
902 | * @dev: network device which has apparently fallen asleep |
903 | * @txqueue: unused |
904 | * |
905 | * Called by kernel when device never acknowledges a transmit has |
906 | * completed (or failed) - i.e. never posted a Tx related interrupt. |
907 | */ |
908 | |
909 | static void axnet_tx_timeout(struct net_device *dev, unsigned int txqueue) |
910 | { |
911 | long e8390_base = dev->base_addr; |
912 | struct ei_device *ei_local = netdev_priv(dev); |
913 | int txsr, isr, tickssofar = jiffies - dev_trans_start(dev); |
914 | unsigned long flags; |
915 | |
916 | dev->stats.tx_errors++; |
917 | |
918 | spin_lock_irqsave(&ei_local->page_lock, flags); |
919 | txsr = inb(port: e8390_base+EN0_TSR); |
920 | isr = inb(port: e8390_base+EN0_ISR); |
921 | spin_unlock_irqrestore(lock: &ei_local->page_lock, flags); |
922 | |
923 | netdev_dbg(dev, "Tx timed out, %s TSR=%#2x, ISR=%#2x, t=%d.\n" , |
924 | (txsr & ENTSR_ABT) ? "excess collisions." : |
925 | (isr) ? "lost interrupt?" : "cable problem?" , |
926 | txsr, isr, tickssofar); |
927 | |
928 | if (!isr && !dev->stats.tx_packets) |
929 | { |
930 | /* The 8390 probably hasn't gotten on the cable yet. */ |
931 | ei_local->interface_num ^= 1; /* Try a different xcvr. */ |
932 | } |
933 | |
934 | /* Ugly but a reset can be slow, yet must be protected */ |
935 | |
936 | spin_lock_irqsave(&ei_local->page_lock, flags); |
937 | |
938 | /* Try to restart the card. Perhaps the user has fixed something. */ |
939 | ei_reset_8390(dev); |
940 | AX88190_init(dev, startp: 1); |
941 | |
942 | spin_unlock_irqrestore(lock: &ei_local->page_lock, flags); |
943 | netif_wake_queue(dev); |
944 | } |
945 | |
946 | /** |
947 | * axnet_start_xmit - begin packet transmission |
948 | * @skb: packet to be sent |
949 | * @dev: network device to which packet is sent |
950 | * |
951 | * Sends a packet to an 8390 network device. |
952 | */ |
953 | |
954 | static netdev_tx_t axnet_start_xmit(struct sk_buff *skb, |
955 | struct net_device *dev) |
956 | { |
957 | long e8390_base = dev->base_addr; |
958 | struct ei_device *ei_local = netdev_priv(dev); |
959 | int length, send_length, output_page; |
960 | unsigned long flags; |
961 | u8 packet[ETH_ZLEN]; |
962 | |
963 | netif_stop_queue(dev); |
964 | |
965 | length = skb->len; |
966 | |
967 | /* Mask interrupts from the ethercard. |
968 | SMP: We have to grab the lock here otherwise the IRQ handler |
969 | on another CPU can flip window and race the IRQ mask set. We end |
970 | up trashing the mcast filter not disabling irqs if we don't lock */ |
971 | |
972 | spin_lock_irqsave(&ei_local->page_lock, flags); |
973 | outb_p(value: 0x00, port: e8390_base + EN0_IMR); |
974 | |
975 | /* |
976 | * Slow phase with lock held. |
977 | */ |
978 | |
979 | ei_local->irqlock = 1; |
980 | |
981 | send_length = max(length, ETH_ZLEN); |
982 | |
983 | /* |
984 | * We have two Tx slots available for use. Find the first free |
985 | * slot, and then perform some sanity checks. With two Tx bufs, |
986 | * you get very close to transmitting back-to-back packets. With |
987 | * only one Tx buf, the transmitter sits idle while you reload the |
988 | * card, leaving a substantial gap between each transmitted packet. |
989 | */ |
990 | |
991 | if (ei_local->tx1 == 0) |
992 | { |
993 | output_page = ei_local->tx_start_page; |
994 | ei_local->tx1 = send_length; |
995 | if ((netif_msg_tx_queued(ei_local)) && |
996 | ei_local->tx2 > 0) |
997 | netdev_dbg(dev, |
998 | "idle transmitter tx2=%d, lasttx=%d, txing=%d\n" , |
999 | ei_local->tx2, ei_local->lasttx, |
1000 | ei_local->txing); |
1001 | } |
1002 | else if (ei_local->tx2 == 0) |
1003 | { |
1004 | output_page = ei_local->tx_start_page + TX_PAGES/2; |
1005 | ei_local->tx2 = send_length; |
1006 | if ((netif_msg_tx_queued(ei_local)) && |
1007 | ei_local->tx1 > 0) |
1008 | netdev_dbg(dev, |
1009 | "idle transmitter, tx1=%d, lasttx=%d, txing=%d\n" , |
1010 | ei_local->tx1, ei_local->lasttx, |
1011 | ei_local->txing); |
1012 | } |
1013 | else |
1014 | { /* We should never get here. */ |
1015 | netif_dbg(ei_local, tx_err, dev, |
1016 | "No Tx buffers free! tx1=%d tx2=%d last=%d\n" , |
1017 | ei_local->tx1, ei_local->tx2, |
1018 | ei_local->lasttx); |
1019 | ei_local->irqlock = 0; |
1020 | netif_stop_queue(dev); |
1021 | outb_p(ENISR_ALL, port: e8390_base + EN0_IMR); |
1022 | spin_unlock_irqrestore(lock: &ei_local->page_lock, flags); |
1023 | dev->stats.tx_errors++; |
1024 | return NETDEV_TX_BUSY; |
1025 | } |
1026 | |
1027 | /* |
1028 | * Okay, now upload the packet and trigger a send if the transmitter |
1029 | * isn't already sending. If it is busy, the interrupt handler will |
1030 | * trigger the send later, upon receiving a Tx done interrupt. |
1031 | */ |
1032 | |
1033 | if (length == skb->len) |
1034 | ei_block_output(dev, length, skb->data, output_page); |
1035 | else { |
1036 | memset(packet, 0, ETH_ZLEN); |
1037 | skb_copy_from_linear_data(skb, to: packet, len: skb->len); |
1038 | ei_block_output(dev, length, packet, output_page); |
1039 | } |
1040 | |
1041 | if (! ei_local->txing) |
1042 | { |
1043 | ei_local->txing = 1; |
1044 | NS8390_trigger_send(dev, length: send_length, start_page: output_page); |
1045 | netif_trans_update(dev); |
1046 | if (output_page == ei_local->tx_start_page) |
1047 | { |
1048 | ei_local->tx1 = -1; |
1049 | ei_local->lasttx = -1; |
1050 | } |
1051 | else |
1052 | { |
1053 | ei_local->tx2 = -1; |
1054 | ei_local->lasttx = -2; |
1055 | } |
1056 | } |
1057 | else ei_local->txqueue++; |
1058 | |
1059 | if (ei_local->tx1 && ei_local->tx2) |
1060 | netif_stop_queue(dev); |
1061 | else |
1062 | netif_start_queue(dev); |
1063 | |
1064 | /* Turn 8390 interrupts back on. */ |
1065 | ei_local->irqlock = 0; |
1066 | outb_p(ENISR_ALL, port: e8390_base + EN0_IMR); |
1067 | |
1068 | spin_unlock_irqrestore(lock: &ei_local->page_lock, flags); |
1069 | |
1070 | dev_kfree_skb (skb); |
1071 | dev->stats.tx_bytes += send_length; |
1072 | |
1073 | return NETDEV_TX_OK; |
1074 | } |
1075 | |
1076 | /** |
1077 | * ax_interrupt - handle the interrupts from an 8390 |
1078 | * @irq: interrupt number |
1079 | * @dev_id: a pointer to the net_device |
1080 | * |
1081 | * Handle the ether interface interrupts. We pull packets from |
1082 | * the 8390 via the card specific functions and fire them at the networking |
1083 | * stack. We also handle transmit completions and wake the transmit path if |
1084 | * necessary. We also update the counters and do other housekeeping as |
1085 | * needed. |
1086 | */ |
1087 | |
1088 | static irqreturn_t ax_interrupt(int irq, void *dev_id) |
1089 | { |
1090 | struct net_device *dev = dev_id; |
1091 | long e8390_base; |
1092 | int interrupts, nr_serviced = 0, i; |
1093 | struct ei_device *ei_local; |
1094 | int handled = 0; |
1095 | unsigned long flags; |
1096 | |
1097 | e8390_base = dev->base_addr; |
1098 | ei_local = netdev_priv(dev); |
1099 | |
1100 | /* |
1101 | * Protect the irq test too. |
1102 | */ |
1103 | |
1104 | spin_lock_irqsave(&ei_local->page_lock, flags); |
1105 | |
1106 | if (ei_local->irqlock) { |
1107 | #if 1 /* This might just be an interrupt for a PCI device sharing this line */ |
1108 | const char *msg; |
1109 | /* The "irqlock" check is only for testing. */ |
1110 | if (ei_local->irqlock) |
1111 | msg = "Interrupted while interrupts are masked!" ; |
1112 | else |
1113 | msg = "Reentering the interrupt handler!" ; |
1114 | netdev_info(dev, format: "%s, isr=%#2x imr=%#2x\n" , |
1115 | msg, |
1116 | inb_p(port: e8390_base + EN0_ISR), |
1117 | inb_p(port: e8390_base + EN0_IMR)); |
1118 | #endif |
1119 | spin_unlock_irqrestore(lock: &ei_local->page_lock, flags); |
1120 | return IRQ_NONE; |
1121 | } |
1122 | |
1123 | netif_dbg(ei_local, intr, dev, "interrupt(isr=%#2.2x)\n" , |
1124 | inb_p(e8390_base + EN0_ISR)); |
1125 | |
1126 | outb_p(value: 0x00, port: e8390_base + EN0_ISR); |
1127 | ei_local->irqlock = 1; |
1128 | |
1129 | /* !!Assumption!! -- we stay in page 0. Don't break this. */ |
1130 | while ((interrupts = inb_p(port: e8390_base + EN0_ISR)) != 0 && |
1131 | ++nr_serviced < MAX_SERVICE) |
1132 | { |
1133 | if (!netif_running(dev) || (interrupts == 0xff)) { |
1134 | netif_warn(ei_local, intr, dev, |
1135 | "interrupt from stopped card\n" ); |
1136 | outb_p(value: interrupts, port: e8390_base + EN0_ISR); |
1137 | interrupts = 0; |
1138 | break; |
1139 | } |
1140 | handled = 1; |
1141 | |
1142 | /* AX88190 bug fix. */ |
1143 | outb_p(value: interrupts, port: e8390_base + EN0_ISR); |
1144 | for (i = 0; i < 10; i++) { |
1145 | if (!(inb(port: e8390_base + EN0_ISR) & interrupts)) |
1146 | break; |
1147 | outb_p(value: 0, port: e8390_base + EN0_ISR); |
1148 | outb_p(value: interrupts, port: e8390_base + EN0_ISR); |
1149 | } |
1150 | if (interrupts & ENISR_OVER) |
1151 | ei_rx_overrun(dev); |
1152 | else if (interrupts & (ENISR_RX+ENISR_RX_ERR)) |
1153 | { |
1154 | /* Got a good (?) packet. */ |
1155 | ei_receive(dev); |
1156 | } |
1157 | /* Push the next to-transmit packet through. */ |
1158 | if (interrupts & ENISR_TX) |
1159 | ei_tx_intr(dev); |
1160 | else if (interrupts & ENISR_TX_ERR) |
1161 | ei_tx_err(dev); |
1162 | |
1163 | if (interrupts & ENISR_COUNTERS) |
1164 | { |
1165 | dev->stats.rx_frame_errors += inb_p(port: e8390_base + EN0_COUNTER0); |
1166 | dev->stats.rx_crc_errors += inb_p(port: e8390_base + EN0_COUNTER1); |
1167 | dev->stats.rx_missed_errors+= inb_p(port: e8390_base + EN0_COUNTER2); |
1168 | } |
1169 | } |
1170 | |
1171 | if (interrupts && (netif_msg_intr(ei_local))) |
1172 | { |
1173 | handled = 1; |
1174 | if (nr_serviced >= MAX_SERVICE) |
1175 | { |
1176 | /* 0xFF is valid for a card removal */ |
1177 | if (interrupts != 0xFF) |
1178 | netdev_warn(dev, |
1179 | format: "Too much work at interrupt, status %#2.2x\n" , |
1180 | interrupts); |
1181 | outb_p(ENISR_ALL, port: e8390_base + EN0_ISR); /* Ack. most intrs. */ |
1182 | } else { |
1183 | netdev_warn(dev, format: "unknown interrupt %#2x\n" , |
1184 | interrupts); |
1185 | outb_p(value: 0xff, port: e8390_base + EN0_ISR); /* Ack. all intrs. */ |
1186 | } |
1187 | } |
1188 | |
1189 | /* Turn 8390 interrupts back on. */ |
1190 | ei_local->irqlock = 0; |
1191 | outb_p(ENISR_ALL, port: e8390_base + EN0_IMR); |
1192 | |
1193 | spin_unlock_irqrestore(lock: &ei_local->page_lock, flags); |
1194 | return IRQ_RETVAL(handled); |
1195 | } |
1196 | |
1197 | /** |
1198 | * ei_tx_err - handle transmitter error |
1199 | * @dev: network device which threw the exception |
1200 | * |
1201 | * A transmitter error has happened. Most likely excess collisions (which |
1202 | * is a fairly normal condition). If the error is one where the Tx will |
1203 | * have been aborted, we try and send another one right away, instead of |
1204 | * letting the failed packet sit and collect dust in the Tx buffer. This |
1205 | * is a much better solution as it avoids kernel based Tx timeouts, and |
1206 | * an unnecessary card reset. |
1207 | * |
1208 | * Called with lock held. |
1209 | */ |
1210 | |
1211 | static void ei_tx_err(struct net_device *dev) |
1212 | { |
1213 | long e8390_base = dev->base_addr; |
1214 | unsigned char txsr = inb_p(port: e8390_base+EN0_TSR); |
1215 | unsigned char tx_was_aborted = txsr & (ENTSR_ABT+ENTSR_FU); |
1216 | |
1217 | #ifdef VERBOSE_ERROR_DUMP |
1218 | netdev_dbg(dev, "transmitter error (%#2x):" , txsr); |
1219 | if (txsr & ENTSR_ABT) |
1220 | pr_cont(" excess-collisions" ); |
1221 | if (txsr & ENTSR_ND) |
1222 | pr_cont(" non-deferral" ); |
1223 | if (txsr & ENTSR_CRS) |
1224 | pr_cont(" lost-carrier" ); |
1225 | if (txsr & ENTSR_FU) |
1226 | pr_cont(" FIFO-underrun" ); |
1227 | if (txsr & ENTSR_CDH) |
1228 | pr_cont(" lost-heartbeat" ); |
1229 | pr_cont("\n" ); |
1230 | #endif |
1231 | |
1232 | if (tx_was_aborted) |
1233 | ei_tx_intr(dev); |
1234 | else |
1235 | { |
1236 | dev->stats.tx_errors++; |
1237 | if (txsr & ENTSR_CRS) dev->stats.tx_carrier_errors++; |
1238 | if (txsr & ENTSR_CDH) dev->stats.tx_heartbeat_errors++; |
1239 | if (txsr & ENTSR_OWC) dev->stats.tx_window_errors++; |
1240 | } |
1241 | } |
1242 | |
1243 | /** |
1244 | * ei_tx_intr - transmit interrupt handler |
1245 | * @dev: network device for which tx intr is handled |
1246 | * |
1247 | * We have finished a transmit: check for errors and then trigger the next |
1248 | * packet to be sent. Called with lock held. |
1249 | */ |
1250 | |
1251 | static void ei_tx_intr(struct net_device *dev) |
1252 | { |
1253 | long e8390_base = dev->base_addr; |
1254 | struct ei_device *ei_local = netdev_priv(dev); |
1255 | int status = inb(port: e8390_base + EN0_TSR); |
1256 | |
1257 | /* |
1258 | * There are two Tx buffers, see which one finished, and trigger |
1259 | * the send of another one if it exists. |
1260 | */ |
1261 | ei_local->txqueue--; |
1262 | |
1263 | if (ei_local->tx1 < 0) |
1264 | { |
1265 | if (ei_local->lasttx != 1 && ei_local->lasttx != -1) |
1266 | netdev_err(dev, format: "%s: bogus last_tx_buffer %d, tx1=%d\n" , |
1267 | ei_local->name, ei_local->lasttx, |
1268 | ei_local->tx1); |
1269 | ei_local->tx1 = 0; |
1270 | if (ei_local->tx2 > 0) |
1271 | { |
1272 | ei_local->txing = 1; |
1273 | NS8390_trigger_send(dev, length: ei_local->tx2, start_page: ei_local->tx_start_page + 6); |
1274 | netif_trans_update(dev); |
1275 | ei_local->tx2 = -1; |
1276 | ei_local->lasttx = 2; |
1277 | } else { |
1278 | ei_local->lasttx = 20; |
1279 | ei_local->txing = 0; |
1280 | } |
1281 | } |
1282 | else if (ei_local->tx2 < 0) |
1283 | { |
1284 | if (ei_local->lasttx != 2 && ei_local->lasttx != -2) |
1285 | netdev_err(dev, format: "%s: bogus last_tx_buffer %d, tx2=%d\n" , |
1286 | ei_local->name, ei_local->lasttx, |
1287 | ei_local->tx2); |
1288 | ei_local->tx2 = 0; |
1289 | if (ei_local->tx1 > 0) |
1290 | { |
1291 | ei_local->txing = 1; |
1292 | NS8390_trigger_send(dev, length: ei_local->tx1, start_page: ei_local->tx_start_page); |
1293 | netif_trans_update(dev); |
1294 | ei_local->tx1 = -1; |
1295 | ei_local->lasttx = 1; |
1296 | } else { |
1297 | ei_local->lasttx = 10; |
1298 | ei_local->txing = 0; |
1299 | } |
1300 | } |
1301 | // else |
1302 | // netdev_warn(dev, "unexpected TX-done interrupt, lasttx=%d\n", |
1303 | // ei_local->lasttx); |
1304 | |
1305 | /* Minimize Tx latency: update the statistics after we restart TXing. */ |
1306 | if (status & ENTSR_COL) |
1307 | dev->stats.collisions++; |
1308 | if (status & ENTSR_PTX) |
1309 | dev->stats.tx_packets++; |
1310 | else |
1311 | { |
1312 | dev->stats.tx_errors++; |
1313 | if (status & ENTSR_ABT) |
1314 | { |
1315 | dev->stats.tx_aborted_errors++; |
1316 | dev->stats.collisions += 16; |
1317 | } |
1318 | if (status & ENTSR_CRS) |
1319 | dev->stats.tx_carrier_errors++; |
1320 | if (status & ENTSR_FU) |
1321 | dev->stats.tx_fifo_errors++; |
1322 | if (status & ENTSR_CDH) |
1323 | dev->stats.tx_heartbeat_errors++; |
1324 | if (status & ENTSR_OWC) |
1325 | dev->stats.tx_window_errors++; |
1326 | } |
1327 | netif_wake_queue(dev); |
1328 | } |
1329 | |
1330 | /** |
1331 | * ei_receive - receive some packets |
1332 | * @dev: network device with which receive will be run |
1333 | * |
1334 | * We have a good packet(s), get it/them out of the buffers. |
1335 | * Called with lock held. |
1336 | */ |
1337 | |
1338 | static void ei_receive(struct net_device *dev) |
1339 | { |
1340 | long e8390_base = dev->base_addr; |
1341 | struct ei_device *ei_local = netdev_priv(dev); |
1342 | unsigned char rxing_page, this_frame, next_frame; |
1343 | unsigned short current_offset; |
1344 | int rx_pkt_count = 0; |
1345 | struct e8390_pkt_hdr rx_frame; |
1346 | |
1347 | while (++rx_pkt_count < 10) |
1348 | { |
1349 | int pkt_len, pkt_stat; |
1350 | |
1351 | /* Get the rx page (incoming packet pointer). */ |
1352 | rxing_page = inb_p(port: e8390_base + EN1_CURPAG -1); |
1353 | |
1354 | /* Remove one frame from the ring. Boundary is always a page behind. */ |
1355 | this_frame = inb_p(port: e8390_base + EN0_BOUNDARY) + 1; |
1356 | if (this_frame >= ei_local->stop_page) |
1357 | this_frame = ei_local->rx_start_page; |
1358 | |
1359 | /* Someday we'll omit the previous, iff we never get this message. |
1360 | (There is at least one clone claimed to have a problem.) |
1361 | |
1362 | Keep quiet if it looks like a card removal. One problem here |
1363 | is that some clones crash in roughly the same way. |
1364 | */ |
1365 | if ((netif_msg_rx_err(ei_local)) && |
1366 | this_frame != ei_local->current_page && |
1367 | (this_frame != 0x0 || rxing_page != 0xFF)) |
1368 | netdev_err(dev, format: "mismatched read page pointers %2x vs %2x\n" , |
1369 | this_frame, ei_local->current_page); |
1370 | |
1371 | if (this_frame == rxing_page) /* Read all the frames? */ |
1372 | break; /* Done for now */ |
1373 | |
1374 | current_offset = this_frame << 8; |
1375 | ei_get_8390_hdr(dev, &rx_frame, this_frame); |
1376 | |
1377 | pkt_len = rx_frame.count - sizeof(struct e8390_pkt_hdr); |
1378 | pkt_stat = rx_frame.status; |
1379 | |
1380 | next_frame = this_frame + 1 + ((pkt_len+4)>>8); |
1381 | |
1382 | if (pkt_len < 60 || pkt_len > 1518) |
1383 | { |
1384 | netif_err(ei_local, rx_err, dev, |
1385 | "bogus packet size: %d, status=%#2x nxpg=%#2x\n" , |
1386 | rx_frame.count, rx_frame.status, |
1387 | rx_frame.next); |
1388 | dev->stats.rx_errors++; |
1389 | dev->stats.rx_length_errors++; |
1390 | } |
1391 | else if ((pkt_stat & 0x0F) == ENRSR_RXOK) |
1392 | { |
1393 | struct sk_buff *skb; |
1394 | |
1395 | skb = netdev_alloc_skb(dev, length: pkt_len + 2); |
1396 | if (skb == NULL) |
1397 | { |
1398 | netif_err(ei_local, rx_err, dev, |
1399 | "Couldn't allocate a sk_buff of size %d\n" , |
1400 | pkt_len); |
1401 | dev->stats.rx_dropped++; |
1402 | break; |
1403 | } |
1404 | else |
1405 | { |
1406 | skb_reserve(skb,len: 2); /* IP headers on 16 byte boundaries */ |
1407 | skb_put(skb, len: pkt_len); /* Make room */ |
1408 | ei_block_input(dev, pkt_len, skb, current_offset + sizeof(rx_frame)); |
1409 | skb->protocol=eth_type_trans(skb,dev); |
1410 | netif_rx(skb); |
1411 | dev->stats.rx_packets++; |
1412 | dev->stats.rx_bytes += pkt_len; |
1413 | if (pkt_stat & ENRSR_PHY) |
1414 | dev->stats.multicast++; |
1415 | } |
1416 | } |
1417 | else |
1418 | { |
1419 | netif_err(ei_local, rx_err, dev, |
1420 | "bogus packet: status=%#2x nxpg=%#2x size=%d\n" , |
1421 | rx_frame.status, rx_frame.next, |
1422 | rx_frame.count); |
1423 | dev->stats.rx_errors++; |
1424 | /* NB: The NIC counts CRC, frame and missed errors. */ |
1425 | if (pkt_stat & ENRSR_FO) |
1426 | dev->stats.rx_fifo_errors++; |
1427 | } |
1428 | next_frame = rx_frame.next; |
1429 | |
1430 | /* This _should_ never happen: it's here for avoiding bad clones. */ |
1431 | if (next_frame >= ei_local->stop_page) { |
1432 | netdev_info(dev, format: "next frame inconsistency, %#2x\n" , |
1433 | next_frame); |
1434 | next_frame = ei_local->rx_start_page; |
1435 | } |
1436 | ei_local->current_page = next_frame; |
1437 | outb_p(value: next_frame-1, port: e8390_base+EN0_BOUNDARY); |
1438 | } |
1439 | } |
1440 | |
1441 | /** |
1442 | * ei_rx_overrun - handle receiver overrun |
1443 | * @dev: network device which threw exception |
1444 | * |
1445 | * We have a receiver overrun: we have to kick the 8390 to get it started |
1446 | * again. Problem is that you have to kick it exactly as NS prescribes in |
1447 | * the updated datasheets, or "the NIC may act in an unpredictable manner." |
1448 | * This includes causing "the NIC to defer indefinitely when it is stopped |
1449 | * on a busy network." Ugh. |
1450 | * Called with lock held. Don't call this with the interrupts off or your |
1451 | * computer will hate you - it takes 10ms or so. |
1452 | */ |
1453 | |
1454 | static void ei_rx_overrun(struct net_device *dev) |
1455 | { |
1456 | struct axnet_dev *info = PRIV(dev); |
1457 | long e8390_base = dev->base_addr; |
1458 | unsigned char was_txing, must_resend = 0; |
1459 | struct ei_device *ei_local = netdev_priv(dev); |
1460 | |
1461 | /* |
1462 | * Record whether a Tx was in progress and then issue the |
1463 | * stop command. |
1464 | */ |
1465 | was_txing = inb_p(port: e8390_base+E8390_CMD) & E8390_TRANS; |
1466 | outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, port: e8390_base+E8390_CMD); |
1467 | |
1468 | netif_dbg(ei_local, rx_err, dev, "Receiver overrun\n" ); |
1469 | dev->stats.rx_over_errors++; |
1470 | |
1471 | /* |
1472 | * Wait a full Tx time (1.2ms) + some guard time, NS says 1.6ms total. |
1473 | * We wait at least 2ms. |
1474 | */ |
1475 | |
1476 | mdelay(2); |
1477 | |
1478 | /* |
1479 | * Reset RBCR[01] back to zero as per magic incantation. |
1480 | */ |
1481 | outb_p(value: 0x00, port: e8390_base+EN0_RCNTLO); |
1482 | outb_p(value: 0x00, port: e8390_base+EN0_RCNTHI); |
1483 | |
1484 | /* |
1485 | * See if any Tx was interrupted or not. According to NS, this |
1486 | * step is vital, and skipping it will cause no end of havoc. |
1487 | */ |
1488 | |
1489 | if (was_txing) |
1490 | { |
1491 | unsigned char tx_completed = inb_p(port: e8390_base+EN0_ISR) & (ENISR_TX+ENISR_TX_ERR); |
1492 | if (!tx_completed) |
1493 | must_resend = 1; |
1494 | } |
1495 | |
1496 | /* |
1497 | * Have to enter loopback mode and then restart the NIC before |
1498 | * you are allowed to slurp packets up off the ring. |
1499 | */ |
1500 | outb_p(E8390_TXOFF, port: e8390_base + EN0_TXCR); |
1501 | outb_p(E8390_NODMA + E8390_PAGE0 + E8390_START, port: e8390_base + E8390_CMD); |
1502 | |
1503 | /* |
1504 | * Clear the Rx ring of all the debris, and ack the interrupt. |
1505 | */ |
1506 | ei_receive(dev); |
1507 | |
1508 | /* |
1509 | * Leave loopback mode, and resend any packet that got stopped. |
1510 | */ |
1511 | outb_p(E8390_TXCONFIG | info->duplex_flag, port: e8390_base + EN0_TXCR); |
1512 | if (must_resend) |
1513 | outb_p(E8390_NODMA + E8390_PAGE0 + E8390_START + E8390_TRANS, port: e8390_base + E8390_CMD); |
1514 | } |
1515 | |
1516 | /* |
1517 | * Collect the stats. This is called unlocked and from several contexts. |
1518 | */ |
1519 | |
1520 | static struct net_device_stats *get_stats(struct net_device *dev) |
1521 | { |
1522 | long ioaddr = dev->base_addr; |
1523 | struct ei_device *ei_local = netdev_priv(dev); |
1524 | unsigned long flags; |
1525 | |
1526 | /* If the card is stopped, just return the present stats. */ |
1527 | if (!netif_running(dev)) |
1528 | return &dev->stats; |
1529 | |
1530 | spin_lock_irqsave(&ei_local->page_lock,flags); |
1531 | /* Read the counter registers, assuming we are in page 0. */ |
1532 | dev->stats.rx_frame_errors += inb_p(port: ioaddr + EN0_COUNTER0); |
1533 | dev->stats.rx_crc_errors += inb_p(port: ioaddr + EN0_COUNTER1); |
1534 | dev->stats.rx_missed_errors+= inb_p(port: ioaddr + EN0_COUNTER2); |
1535 | spin_unlock_irqrestore(lock: &ei_local->page_lock, flags); |
1536 | |
1537 | return &dev->stats; |
1538 | } |
1539 | |
1540 | /* |
1541 | * Form the 64 bit 8390 multicast table from the linked list of addresses |
1542 | * associated with this dev structure. |
1543 | */ |
1544 | |
1545 | static inline void make_mc_bits(u8 *bits, struct net_device *dev) |
1546 | { |
1547 | struct netdev_hw_addr *ha; |
1548 | u32 crc; |
1549 | |
1550 | netdev_for_each_mc_addr(ha, dev) { |
1551 | crc = ether_crc(ETH_ALEN, ha->addr); |
1552 | /* |
1553 | * The 8390 uses the 6 most significant bits of the |
1554 | * CRC to index the multicast table. |
1555 | */ |
1556 | bits[crc>>29] |= (1<<((crc>>26)&7)); |
1557 | } |
1558 | } |
1559 | |
1560 | /** |
1561 | * do_set_multicast_list - set/clear multicast filter |
1562 | * @dev: net device for which multicast filter is adjusted |
1563 | * |
1564 | * Set or clear the multicast filter for this adaptor. |
1565 | * Must be called with lock held. |
1566 | */ |
1567 | |
1568 | static void do_set_multicast_list(struct net_device *dev) |
1569 | { |
1570 | long e8390_base = dev->base_addr; |
1571 | int i; |
1572 | struct ei_device *ei_local = netdev_priv(dev); |
1573 | |
1574 | if (!(dev->flags&(IFF_PROMISC|IFF_ALLMULTI))) { |
1575 | memset(ei_local->mcfilter, 0, 8); |
1576 | if (!netdev_mc_empty(dev)) |
1577 | make_mc_bits(bits: ei_local->mcfilter, dev); |
1578 | } else { |
1579 | /* set to accept-all */ |
1580 | memset(ei_local->mcfilter, 0xFF, 8); |
1581 | } |
1582 | |
1583 | outb_p(E8390_NODMA + E8390_PAGE1, port: e8390_base + E8390_CMD); |
1584 | for(i = 0; i < 8; i++) |
1585 | { |
1586 | outb_p(value: ei_local->mcfilter[i], port: e8390_base + EN1_MULT_SHIFT(i)); |
1587 | } |
1588 | outb_p(E8390_NODMA + E8390_PAGE0, port: e8390_base + E8390_CMD); |
1589 | |
1590 | if(dev->flags&IFF_PROMISC) |
1591 | outb_p(E8390_RXCONFIG | 0x58, port: e8390_base + EN0_RXCR); |
1592 | else if (dev->flags & IFF_ALLMULTI || !netdev_mc_empty(dev)) |
1593 | outb_p(E8390_RXCONFIG | 0x48, port: e8390_base + EN0_RXCR); |
1594 | else |
1595 | outb_p(E8390_RXCONFIG | 0x40, port: e8390_base + EN0_RXCR); |
1596 | |
1597 | outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, port: e8390_base+E8390_CMD); |
1598 | } |
1599 | |
1600 | /* |
1601 | * Called without lock held. This is invoked from user context and may |
1602 | * be parallel to just about everything else. Its also fairly quick and |
1603 | * not called too often. Must protect against both bh and irq users |
1604 | */ |
1605 | |
1606 | static void set_multicast_list(struct net_device *dev) |
1607 | { |
1608 | unsigned long flags; |
1609 | |
1610 | spin_lock_irqsave(&dev_lock(dev), flags); |
1611 | do_set_multicast_list(dev); |
1612 | spin_unlock_irqrestore(lock: &dev_lock(dev), flags); |
1613 | } |
1614 | |
1615 | /* This page of functions should be 8390 generic */ |
1616 | /* Follow National Semi's recommendations for initializing the "NIC". */ |
1617 | |
1618 | /** |
1619 | * AX88190_init - initialize 8390 hardware |
1620 | * @dev: network device to initialize |
1621 | * @startp: boolean. non-zero value to initiate chip processing |
1622 | * |
1623 | * Must be called with lock held. |
1624 | */ |
1625 | |
1626 | static void AX88190_init(struct net_device *dev, int startp) |
1627 | { |
1628 | struct axnet_dev *info = PRIV(dev); |
1629 | long e8390_base = dev->base_addr; |
1630 | struct ei_device *ei_local = netdev_priv(dev); |
1631 | int i; |
1632 | int endcfg = ei_local->word16 ? (0x48 | ENDCFG_WTS) : 0x48; |
1633 | |
1634 | if(sizeof(struct e8390_pkt_hdr)!=4) |
1635 | panic(fmt: "8390.c: header struct mispacked\n" ); |
1636 | /* Follow National Semi's recommendations for initing the DP83902. */ |
1637 | outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, port: e8390_base+E8390_CMD); /* 0x21 */ |
1638 | outb_p(value: endcfg, port: e8390_base + EN0_DCFG); /* 0x48 or 0x49 */ |
1639 | /* Clear the remote byte count registers. */ |
1640 | outb_p(value: 0x00, port: e8390_base + EN0_RCNTLO); |
1641 | outb_p(value: 0x00, port: e8390_base + EN0_RCNTHI); |
1642 | /* Set to monitor and loopback mode -- this is vital!. */ |
1643 | outb_p(E8390_RXOFF|0x40, port: e8390_base + EN0_RXCR); /* 0x60 */ |
1644 | outb_p(E8390_TXOFF, port: e8390_base + EN0_TXCR); /* 0x02 */ |
1645 | /* Set the transmit page and receive ring. */ |
1646 | outb_p(value: ei_local->tx_start_page, port: e8390_base + EN0_TPSR); |
1647 | ei_local->tx1 = ei_local->tx2 = 0; |
1648 | outb_p(value: ei_local->rx_start_page, port: e8390_base + EN0_STARTPG); |
1649 | outb_p(value: ei_local->stop_page-1, port: e8390_base + EN0_BOUNDARY); /* 3c503 says 0x3f,NS0x26*/ |
1650 | ei_local->current_page = ei_local->rx_start_page; /* assert boundary+1 */ |
1651 | outb_p(value: ei_local->stop_page, port: e8390_base + EN0_STOPPG); |
1652 | /* Clear the pending interrupts and mask. */ |
1653 | outb_p(value: 0xFF, port: e8390_base + EN0_ISR); |
1654 | outb_p(value: 0x00, port: e8390_base + EN0_IMR); |
1655 | |
1656 | /* Copy the station address into the DS8390 registers. */ |
1657 | |
1658 | outb_p(E8390_NODMA + E8390_PAGE1 + E8390_STOP, port: e8390_base+E8390_CMD); /* 0x61 */ |
1659 | for(i = 0; i < 6; i++) |
1660 | { |
1661 | outb_p(value: dev->dev_addr[i], port: e8390_base + EN1_PHYS_SHIFT(i)); |
1662 | if(inb_p(port: e8390_base + EN1_PHYS_SHIFT(i))!=dev->dev_addr[i]) |
1663 | netdev_err(dev, format: "Hw. address read/write mismap %d\n" , i); |
1664 | } |
1665 | |
1666 | outb_p(value: ei_local->rx_start_page, port: e8390_base + EN1_CURPAG); |
1667 | outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, port: e8390_base+E8390_CMD); |
1668 | |
1669 | netif_start_queue(dev); |
1670 | ei_local->tx1 = ei_local->tx2 = 0; |
1671 | ei_local->txing = 0; |
1672 | |
1673 | if (info->flags & IS_AX88790) /* select Internal PHY */ |
1674 | outb(value: 0x10, port: e8390_base + AXNET_GPIO); |
1675 | |
1676 | if (startp) |
1677 | { |
1678 | outb_p(value: 0xff, port: e8390_base + EN0_ISR); |
1679 | outb_p(ENISR_ALL, port: e8390_base + EN0_IMR); |
1680 | outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, port: e8390_base+E8390_CMD); |
1681 | outb_p(E8390_TXCONFIG | info->duplex_flag, |
1682 | port: e8390_base + EN0_TXCR); /* xmit on. */ |
1683 | /* 3c503 TechMan says rxconfig only after the NIC is started. */ |
1684 | outb_p(E8390_RXCONFIG | 0x40, port: e8390_base + EN0_RXCR); /* rx on, */ |
1685 | do_set_multicast_list(dev); /* (re)load the mcast table */ |
1686 | } |
1687 | } |
1688 | |
1689 | /* Trigger a transmit start, assuming the length is valid. |
1690 | Always called with the page lock held */ |
1691 | |
1692 | static void NS8390_trigger_send(struct net_device *dev, unsigned int length, |
1693 | int start_page) |
1694 | { |
1695 | long e8390_base = dev->base_addr; |
1696 | struct ei_device *ei_local __attribute((unused)) = netdev_priv(dev); |
1697 | |
1698 | if (inb_p(port: e8390_base) & E8390_TRANS) |
1699 | { |
1700 | netdev_warn(dev, format: "trigger_send() called with the transmitter busy\n" ); |
1701 | return; |
1702 | } |
1703 | outb_p(value: length & 0xff, port: e8390_base + EN0_TCNTLO); |
1704 | outb_p(value: length >> 8, port: e8390_base + EN0_TCNTHI); |
1705 | outb_p(value: start_page, port: e8390_base + EN0_TPSR); |
1706 | outb_p(E8390_NODMA+E8390_TRANS+E8390_START, port: e8390_base+E8390_CMD); |
1707 | } |
1708 | |