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1da177e4 LT |
1 | /* mac8390.c: New driver for 8390-based Nubus (or Nubus-alike) |
2 | Ethernet cards on Linux */ | |
3 | /* Based on the former daynaport.c driver, by Alan Cox. Some code | |
4 | taken from or inspired by skeleton.c by Donald Becker, acenic.c by | |
5 | Jes Sorensen, and ne2k-pci.c by Donald Becker and Paul Gortmaker. | |
6 | ||
7 | This software may be used and distributed according to the terms of | |
8 | the GNU Public License, incorporated herein by reference. */ | |
9 | ||
10 | /* 2000-02-28: support added for Dayna and Kinetics cards by | |
11 | A.G.deWijn@phys.uu.nl */ | |
12 | /* 2000-04-04: support added for Dayna2 by bart@etpmod.phys.tue.nl */ | |
13 | /* 2001-04-18: support for DaynaPort E/LC-M by rayk@knightsmanor.org */ | |
14 | /* 2001-05-15: support for Cabletron ported from old daynaport driver | |
15 | * and fixed access to Sonic Sys card which masquerades as a Farallon | |
16 | * by rayk@knightsmanor.org */ | |
17 | ||
18 | #include <linux/version.h> | |
19 | #include <linux/module.h> | |
20 | #include <linux/kernel.h> | |
21 | #include <linux/types.h> | |
22 | #include <linux/fcntl.h> | |
23 | #include <linux/interrupt.h> | |
24 | #include <linux/ptrace.h> | |
25 | #include <linux/ioport.h> | |
26 | #include <linux/nubus.h> | |
27 | #include <linux/in.h> | |
28 | #include <linux/slab.h> | |
29 | #include <linux/string.h> | |
30 | #include <linux/errno.h> | |
31 | #include <linux/init.h> | |
32 | #include <linux/netdevice.h> | |
33 | #include <linux/etherdevice.h> | |
34 | #include <linux/skbuff.h> | |
35 | #include <linux/bitops.h> | |
36 | ||
37 | #include <asm/system.h> | |
38 | #include <asm/io.h> | |
39 | #include <asm/dma.h> | |
40 | #include <asm/hwtest.h> | |
41 | #include <asm/macints.h> | |
42 | ||
43 | #include "8390.h" | |
44 | ||
45 | #define WD_START_PG 0x00 /* First page of TX buffer */ | |
46 | #define CABLETRON_RX_START_PG 0x00 /* First page of RX buffer */ | |
47 | #define CABLETRON_RX_STOP_PG 0x30 /* Last page +1 of RX ring */ | |
48 | #define CABLETRON_TX_START_PG CABLETRON_RX_STOP_PG /* First page of TX buffer */ | |
49 | ||
50 | /* Unfortunately it seems we have to hardcode these for the moment */ | |
51 | /* Shouldn't the card know about this? Does anyone know where to read it off the card? Do we trust the data provided by the card? */ | |
52 | ||
53 | #define DAYNA_8390_BASE 0x80000 | |
54 | #define DAYNA_8390_MEM 0x00000 | |
55 | ||
56 | #define KINETICS_8390_BASE 0x80000 | |
57 | #define KINETICS_8390_MEM 0x00000 | |
58 | ||
59 | #define CABLETRON_8390_BASE 0x90000 | |
60 | #define CABLETRON_8390_MEM 0x00000 | |
61 | ||
62 | enum mac8390_type { | |
63 | MAC8390_NONE = -1, | |
64 | MAC8390_APPLE, | |
65 | MAC8390_ASANTE, | |
66 | MAC8390_FARALLON, /* Apple, Asante, and Farallon are all compatible */ | |
67 | MAC8390_CABLETRON, | |
68 | MAC8390_DAYNA, | |
69 | MAC8390_INTERLAN, | |
70 | MAC8390_KINETICS, | |
71 | MAC8390_FOCUS, | |
72 | MAC8390_SONICSYS, | |
73 | MAC8390_DAYNA2, | |
74 | MAC8390_DAYNA3, | |
75 | }; | |
76 | ||
77 | static const char * cardname[] = { | |
78 | "apple", | |
79 | "asante", | |
80 | "farallon", | |
81 | "cabletron", | |
82 | "dayna", | |
83 | "interlan", | |
84 | "kinetics", | |
85 | "focus", | |
86 | "sonic systems", | |
87 | "dayna2", | |
88 | "dayna_lc", | |
89 | }; | |
90 | ||
91 | static int word16[] = { | |
92 | 1, /* apple */ | |
93 | 1, /* asante */ | |
94 | 1, /* farallon */ | |
95 | 1, /* cabletron */ | |
96 | 0, /* dayna */ | |
97 | 1, /* interlan */ | |
98 | 0, /* kinetics */ | |
99 | 1, /* focus (??) */ | |
100 | 1, /* sonic systems */ | |
101 | 1, /* dayna2 */ | |
102 | 1, /* dayna-lc */ | |
103 | }; | |
104 | ||
105 | /* on which cards do we use NuBus resources? */ | |
106 | static int useresources[] = { | |
107 | 1, /* apple */ | |
108 | 1, /* asante */ | |
109 | 1, /* farallon */ | |
110 | 0, /* cabletron */ | |
111 | 0, /* dayna */ | |
112 | 0, /* interlan */ | |
113 | 0, /* kinetics */ | |
114 | 0, /* focus (??) */ | |
115 | 1, /* sonic systems */ | |
116 | 1, /* dayna2 */ | |
117 | 1, /* dayna-lc */ | |
118 | }; | |
119 | ||
120 | static char version[] __initdata = | |
121 | "mac8390.c: v0.4 2001-05-15 David Huggins-Daines <dhd@debian.org> and others\n"; | |
122 | ||
123 | extern enum mac8390_type mac8390_ident(struct nubus_dev * dev); | |
124 | extern int mac8390_memsize(unsigned long membase); | |
125 | extern int mac8390_memtest(struct net_device * dev); | |
126 | static int mac8390_initdev(struct net_device * dev, struct nubus_dev * ndev, | |
127 | enum mac8390_type type); | |
128 | ||
129 | static int mac8390_open(struct net_device * dev); | |
130 | static int mac8390_close(struct net_device * dev); | |
131 | static void mac8390_no_reset(struct net_device *dev); | |
132 | ||
133 | /* Sane (32-bit chunk memory read/write) - Apple/Asante/Farallon do this*/ | |
134 | static void sane_get_8390_hdr(struct net_device *dev, | |
135 | struct e8390_pkt_hdr *hdr, int ring_page); | |
136 | static void sane_block_input(struct net_device * dev, int count, | |
137 | struct sk_buff * skb, int ring_offset); | |
138 | static void sane_block_output(struct net_device * dev, int count, | |
139 | const unsigned char * buf, const int start_page); | |
140 | ||
141 | /* dayna_memcpy to and from card */ | |
142 | static void dayna_memcpy_fromcard(struct net_device *dev, void *to, | |
143 | int from, int count); | |
144 | static void dayna_memcpy_tocard(struct net_device *dev, int to, | |
145 | const void *from, int count); | |
146 | ||
147 | /* Dayna - Dayna/Kinetics use this */ | |
148 | static void dayna_get_8390_hdr(struct net_device *dev, | |
149 | struct e8390_pkt_hdr *hdr, int ring_page); | |
150 | static void dayna_block_input(struct net_device *dev, int count, | |
151 | struct sk_buff *skb, int ring_offset); | |
152 | static void dayna_block_output(struct net_device *dev, int count, | |
153 | const unsigned char *buf, int start_page); | |
154 | ||
155 | #define memcpy_fromio(a,b,c) memcpy((a),(void *)(b),(c)) | |
156 | #define memcpy_toio(a,b,c) memcpy((void *)(a),(b),(c)) | |
157 | ||
158 | /* Slow Sane (16-bit chunk memory read/write) Cabletron uses this */ | |
159 | static void slow_sane_get_8390_hdr(struct net_device *dev, | |
160 | struct e8390_pkt_hdr *hdr, int ring_page); | |
161 | static void slow_sane_block_input(struct net_device *dev, int count, | |
162 | struct sk_buff *skb, int ring_offset); | |
163 | static void slow_sane_block_output(struct net_device *dev, int count, | |
164 | const unsigned char *buf, int start_page); | |
165 | static void word_memcpy_tocard(void *tp, const void *fp, int count); | |
166 | static void word_memcpy_fromcard(void *tp, const void *fp, int count); | |
167 | ||
168 | enum mac8390_type __init mac8390_ident(struct nubus_dev * dev) | |
169 | { | |
170 | if (dev->dr_sw == NUBUS_DRSW_ASANTE) | |
171 | return MAC8390_ASANTE; | |
172 | if (dev->dr_sw == NUBUS_DRSW_FARALLON) | |
173 | return MAC8390_FARALLON; | |
174 | if (dev->dr_sw == NUBUS_DRSW_KINETICS) | |
175 | return MAC8390_KINETICS; | |
176 | if (dev->dr_sw == NUBUS_DRSW_DAYNA) | |
177 | return MAC8390_DAYNA; | |
178 | if (dev->dr_sw == NUBUS_DRSW_DAYNA2) | |
179 | return MAC8390_DAYNA2; | |
180 | if (dev->dr_sw == NUBUS_DRSW_DAYNA_LC) | |
181 | return MAC8390_DAYNA3; | |
182 | if (dev->dr_hw == NUBUS_DRHW_CABLETRON) | |
183 | return MAC8390_CABLETRON; | |
184 | return MAC8390_NONE; | |
185 | } | |
186 | ||
187 | int __init mac8390_memsize(unsigned long membase) | |
188 | { | |
189 | unsigned long flags; | |
190 | int i, j; | |
191 | ||
192 | local_irq_save(flags); | |
193 | /* Check up to 32K in 4K increments */ | |
194 | for (i = 0; i < 8; i++) { | |
195 | volatile unsigned short *m = (unsigned short *) (membase + (i * 0x1000)); | |
196 | ||
197 | /* Unwriteable - we have a fully decoded card and the | |
198 | RAM end located */ | |
199 | if (hwreg_present(m) == 0) | |
200 | break; | |
201 | ||
202 | /* write a distinctive byte */ | |
203 | *m = 0xA5A0 | i; | |
204 | /* check that we read back what we wrote */ | |
205 | if (*m != (0xA5A0 | i)) | |
206 | break; | |
207 | ||
208 | /* check for partial decode and wrap */ | |
209 | for (j = 0; j < i; j++) { | |
210 | volatile unsigned short *p = (unsigned short *) (membase + (j * 0x1000)); | |
211 | if (*p != (0xA5A0 | j)) | |
212 | break; | |
213 | } | |
214 | } | |
215 | local_irq_restore(flags); | |
216 | /* in any case, we stopped once we tried one block too many, | |
217 | or once we reached 32K */ | |
218 | return i * 0x1000; | |
219 | } | |
220 | ||
221 | struct net_device * __init mac8390_probe(int unit) | |
222 | { | |
223 | struct net_device *dev; | |
224 | volatile unsigned short *i; | |
225 | int version_disp = 0; | |
226 | struct nubus_dev * ndev = NULL; | |
227 | int err = -ENODEV; | |
228 | ||
229 | struct nubus_dir dir; | |
230 | struct nubus_dirent ent; | |
231 | int offset; | |
232 | static unsigned int slots; | |
233 | ||
234 | enum mac8390_type cardtype; | |
235 | ||
236 | /* probably should check for Nubus instead */ | |
237 | ||
238 | if (!MACH_IS_MAC) | |
239 | return ERR_PTR(-ENODEV); | |
240 | ||
241 | dev = alloc_ei_netdev(); | |
242 | if (!dev) | |
243 | return ERR_PTR(-ENOMEM); | |
244 | ||
245 | if (unit >= 0) | |
246 | sprintf(dev->name, "eth%d", unit); | |
247 | ||
248 | SET_MODULE_OWNER(dev); | |
249 | ||
250 | while ((ndev = nubus_find_type(NUBUS_CAT_NETWORK, NUBUS_TYPE_ETHERNET, ndev))) { | |
251 | /* Have we seen it already? */ | |
252 | if (slots & (1<<ndev->board->slot)) | |
253 | continue; | |
254 | slots |= 1<<ndev->board->slot; | |
255 | ||
256 | if ((cardtype = mac8390_ident(ndev)) == MAC8390_NONE) | |
257 | continue; | |
258 | ||
259 | if (version_disp == 0) { | |
260 | version_disp = 1; | |
261 | printk(version); | |
262 | } | |
263 | ||
264 | dev->irq = SLOT2IRQ(ndev->board->slot); | |
265 | /* This is getting to be a habit */ | |
266 | dev->base_addr = ndev->board->slot_addr | ((ndev->board->slot&0xf) << 20); | |
267 | ||
268 | /* Get some Nubus info - we will trust the card's idea | |
269 | of where its memory and registers are. */ | |
270 | ||
271 | if (nubus_get_func_dir(ndev, &dir) == -1) { | |
272 | printk(KERN_ERR "%s: Unable to get Nubus functional" | |
273 | " directory for slot %X!\n", | |
274 | dev->name, ndev->board->slot); | |
275 | continue; | |
276 | } | |
277 | ||
278 | /* Get the MAC address */ | |
279 | if ((nubus_find_rsrc(&dir, NUBUS_RESID_MAC_ADDRESS, &ent)) == -1) { | |
280 | printk(KERN_INFO "%s: Couldn't get MAC address!\n", | |
281 | dev->name); | |
282 | continue; | |
283 | } else { | |
284 | nubus_get_rsrc_mem(dev->dev_addr, &ent, 6); | |
285 | /* Some Sonic Sys cards masquerade as Farallon */ | |
286 | if (cardtype == MAC8390_FARALLON && | |
287 | dev->dev_addr[0] == 0x0 && | |
288 | dev->dev_addr[1] == 0x40 && | |
289 | dev->dev_addr[2] == 0x10) { | |
290 | /* This is really Sonic Sys card */ | |
291 | cardtype = MAC8390_SONICSYS; | |
292 | } | |
293 | } | |
294 | ||
295 | if (useresources[cardtype] == 1) { | |
296 | nubus_rewinddir(&dir); | |
297 | if (nubus_find_rsrc(&dir, NUBUS_RESID_MINOR_BASEOS, &ent) == -1) { | |
298 | printk(KERN_ERR "%s: Memory offset resource" | |
299 | " for slot %X not found!\n", | |
300 | dev->name, ndev->board->slot); | |
301 | continue; | |
302 | } | |
303 | nubus_get_rsrc_mem(&offset, &ent, 4); | |
304 | dev->mem_start = dev->base_addr + offset; | |
305 | /* yes, this is how the Apple driver does it */ | |
306 | dev->base_addr = dev->mem_start + 0x10000; | |
307 | nubus_rewinddir(&dir); | |
308 | if (nubus_find_rsrc(&dir, NUBUS_RESID_MINOR_LENGTH, &ent) == -1) { | |
309 | printk(KERN_INFO "%s: Memory length resource" | |
310 | " for slot %X not found" | |
311 | ", probing\n", | |
312 | dev->name, ndev->board->slot); | |
313 | offset = mac8390_memsize(dev->mem_start); | |
314 | } else { | |
315 | nubus_get_rsrc_mem(&offset, &ent, 4); | |
316 | } | |
317 | dev->mem_end = dev->mem_start + offset; | |
318 | } else { | |
319 | switch (cardtype) { | |
320 | case MAC8390_KINETICS: | |
321 | case MAC8390_DAYNA: /* it's the same */ | |
322 | dev->base_addr = | |
323 | (int)(ndev->board->slot_addr + | |
324 | DAYNA_8390_BASE); | |
325 | dev->mem_start = | |
326 | (int)(ndev->board->slot_addr + | |
327 | DAYNA_8390_MEM); | |
328 | dev->mem_end = | |
329 | dev->mem_start + | |
330 | mac8390_memsize(dev->mem_start); | |
331 | break; | |
332 | case MAC8390_CABLETRON: | |
333 | dev->base_addr = | |
334 | (int)(ndev->board->slot_addr + | |
335 | CABLETRON_8390_BASE); | |
336 | dev->mem_start = | |
337 | (int)(ndev->board->slot_addr + | |
338 | CABLETRON_8390_MEM); | |
339 | /* The base address is unreadable if 0x00 | |
340 | * has been written to the command register | |
341 | * Reset the chip by writing E8390_NODMA + | |
342 | * E8390_PAGE0 + E8390_STOP just to be | |
343 | * sure | |
344 | */ | |
345 | i = (void *)dev->base_addr; | |
346 | *i = 0x21; | |
347 | dev->mem_end = | |
348 | dev->mem_start + | |
349 | mac8390_memsize(dev->mem_start); | |
350 | break; | |
351 | ||
352 | default: | |
353 | printk(KERN_ERR "Card type %s is" | |
354 | " unsupported, sorry\n", | |
355 | cardname[cardtype]); | |
356 | continue; | |
357 | } | |
358 | } | |
359 | ||
360 | /* Do the nasty 8390 stuff */ | |
361 | if (!mac8390_initdev(dev, ndev, cardtype)) | |
362 | break; | |
363 | } | |
364 | ||
365 | if (!ndev) | |
366 | goto out; | |
367 | err = register_netdev(dev); | |
368 | if (err) | |
369 | goto out; | |
370 | return dev; | |
371 | ||
372 | out: | |
373 | free_netdev(dev); | |
374 | return ERR_PTR(err); | |
375 | } | |
376 | ||
377 | #ifdef MODULE | |
378 | MODULE_AUTHOR("David Huggins-Daines <dhd@debian.org> and others"); | |
379 | MODULE_DESCRIPTION("Macintosh NS8390-based Nubus Ethernet driver"); | |
380 | MODULE_LICENSE("GPL"); | |
381 | ||
382 | /* overkill, of course */ | |
383 | static struct net_device *dev_mac8390[15]; | |
384 | int init_module(void) | |
385 | { | |
386 | int i; | |
387 | for (i = 0; i < 15; i++) { | |
388 | struct net_device *dev = mac8390_probe(-1); | |
389 | if (IS_ERR(dev)) | |
390 | break; | |
391 | dev_mac890[i] = dev; | |
392 | } | |
393 | if (!i) { | |
394 | printk(KERN_NOTICE "mac8390.c: No useable cards found, driver NOT installed.\n"); | |
395 | return -ENODEV; | |
396 | } | |
397 | return 0; | |
398 | } | |
399 | ||
400 | void cleanup_module(void) | |
401 | { | |
402 | int i; | |
403 | for (i = 0; i < 15; i++) { | |
404 | struct net_device *dev = dev_mac890[i]; | |
405 | if (dev) { | |
406 | unregister_netdev(dev); | |
407 | free_netdev(dev); | |
408 | } | |
409 | } | |
410 | } | |
411 | ||
412 | #endif /* MODULE */ | |
413 | ||
414 | static int __init mac8390_initdev(struct net_device * dev, struct nubus_dev * ndev, | |
415 | enum mac8390_type type) | |
416 | { | |
417 | static u32 fwrd4_offsets[16]={ | |
418 | 0, 4, 8, 12, | |
419 | 16, 20, 24, 28, | |
420 | 32, 36, 40, 44, | |
421 | 48, 52, 56, 60 | |
422 | }; | |
423 | static u32 back4_offsets[16]={ | |
424 | 60, 56, 52, 48, | |
425 | 44, 40, 36, 32, | |
426 | 28, 24, 20, 16, | |
427 | 12, 8, 4, 0 | |
428 | }; | |
429 | static u32 fwrd2_offsets[16]={ | |
430 | 0, 2, 4, 6, | |
431 | 8, 10, 12, 14, | |
432 | 16, 18, 20, 22, | |
433 | 24, 26, 28, 30 | |
434 | }; | |
435 | ||
436 | int access_bitmode; | |
437 | ||
438 | /* Now fill in our stuff */ | |
439 | dev->open = &mac8390_open; | |
440 | dev->stop = &mac8390_close; | |
441 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
442 | dev->poll_controller = ei_poll; | |
443 | #endif | |
444 | ||
445 | /* GAR, ei_status is actually a macro even though it looks global */ | |
446 | ei_status.name = cardname[type]; | |
447 | ei_status.word16 = word16[type]; | |
448 | ||
449 | /* Cabletron's TX/RX buffers are backwards */ | |
450 | if (type == MAC8390_CABLETRON) { | |
451 | ei_status.tx_start_page = CABLETRON_TX_START_PG; | |
452 | ei_status.rx_start_page = CABLETRON_RX_START_PG; | |
453 | ei_status.stop_page = CABLETRON_RX_STOP_PG; | |
454 | ei_status.rmem_start = dev->mem_start; | |
455 | ei_status.rmem_end = dev->mem_start + CABLETRON_RX_STOP_PG*256; | |
456 | } else { | |
457 | ei_status.tx_start_page = WD_START_PG; | |
458 | ei_status.rx_start_page = WD_START_PG + TX_PAGES; | |
459 | ei_status.stop_page = (dev->mem_end - dev->mem_start)/256; | |
460 | ei_status.rmem_start = dev->mem_start + TX_PAGES*256; | |
461 | ei_status.rmem_end = dev->mem_end; | |
462 | } | |
463 | ||
464 | /* Fill in model-specific information and functions */ | |
465 | switch(type) { | |
466 | case MAC8390_SONICSYS: | |
467 | /* 16 bit card, register map is reversed */ | |
468 | ei_status.reset_8390 = &mac8390_no_reset; | |
469 | ei_status.block_input = &slow_sane_block_input; | |
470 | ei_status.block_output = &slow_sane_block_output; | |
471 | ei_status.get_8390_hdr = &slow_sane_get_8390_hdr; | |
472 | ei_status.reg_offset = back4_offsets; | |
473 | access_bitmode = 0; | |
474 | break; | |
475 | case MAC8390_FARALLON: | |
476 | case MAC8390_APPLE: | |
477 | case MAC8390_ASANTE: | |
478 | case MAC8390_DAYNA2: | |
479 | case MAC8390_DAYNA3: | |
480 | /* 32 bit card, register map is reversed */ | |
481 | /* sane */ | |
482 | ei_status.reset_8390 = &mac8390_no_reset; | |
483 | ei_status.block_input = &sane_block_input; | |
484 | ei_status.block_output = &sane_block_output; | |
485 | ei_status.get_8390_hdr = &sane_get_8390_hdr; | |
486 | ei_status.reg_offset = back4_offsets; | |
487 | access_bitmode = 1; | |
488 | break; | |
489 | case MAC8390_CABLETRON: | |
490 | /* 16 bit card, register map is short forward */ | |
491 | ei_status.reset_8390 = &mac8390_no_reset; | |
492 | ei_status.block_input = &slow_sane_block_input; | |
493 | ei_status.block_output = &slow_sane_block_output; | |
494 | ei_status.get_8390_hdr = &slow_sane_get_8390_hdr; | |
495 | ei_status.reg_offset = fwrd2_offsets; | |
496 | access_bitmode = 0; | |
497 | break; | |
498 | case MAC8390_DAYNA: | |
499 | case MAC8390_KINETICS: | |
500 | /* 16 bit memory */ | |
501 | /* dayna and similar */ | |
502 | ei_status.reset_8390 = &mac8390_no_reset; | |
503 | ei_status.block_input = &dayna_block_input; | |
504 | ei_status.block_output = &dayna_block_output; | |
505 | ei_status.get_8390_hdr = &dayna_get_8390_hdr; | |
506 | ei_status.reg_offset = fwrd4_offsets; | |
507 | access_bitmode = 0; | |
508 | break; | |
509 | default: | |
510 | printk(KERN_ERR "Card type %s is unsupported, sorry\n", cardname[type]); | |
511 | return -ENODEV; | |
512 | } | |
513 | ||
514 | NS8390_init(dev, 0); | |
515 | ||
516 | /* Good, done, now spit out some messages */ | |
517 | printk(KERN_INFO "%s: %s in slot %X (type %s)\n", | |
518 | dev->name, ndev->board->name, ndev->board->slot, cardname[type]); | |
519 | printk(KERN_INFO "MAC "); | |
520 | { | |
521 | int i; | |
522 | for (i = 0; i < 6; i++) { | |
523 | printk("%2.2x", dev->dev_addr[i]); | |
524 | if (i < 5) | |
525 | printk(":"); | |
526 | } | |
527 | } | |
528 | printk(" IRQ %d, shared memory at %#lx-%#lx, %d-bit access.\n", | |
529 | dev->irq, dev->mem_start, dev->mem_end-1, | |
530 | access_bitmode?32:16); | |
531 | return 0; | |
532 | } | |
533 | ||
534 | static int mac8390_open(struct net_device *dev) | |
535 | { | |
536 | ei_open(dev); | |
537 | if (request_irq(dev->irq, ei_interrupt, 0, "8390 Ethernet", dev)) { | |
538 | printk ("%s: unable to get IRQ %d.\n", dev->name, dev->irq); | |
539 | return -EAGAIN; | |
540 | } | |
541 | return 0; | |
542 | } | |
543 | ||
544 | static int mac8390_close(struct net_device *dev) | |
545 | { | |
546 | free_irq(dev->irq, dev); | |
547 | ei_close(dev); | |
548 | return 0; | |
549 | } | |
550 | ||
551 | static void mac8390_no_reset(struct net_device *dev) | |
552 | { | |
553 | ei_status.txing = 0; | |
554 | if (ei_debug > 1) | |
555 | printk("reset not supported\n"); | |
556 | return; | |
557 | } | |
558 | ||
559 | /* dayna_memcpy_fromio/dayna_memcpy_toio */ | |
560 | /* directly from daynaport.c by Alan Cox */ | |
561 | static void dayna_memcpy_fromcard(struct net_device *dev, void *to, int from, int count) | |
562 | { | |
563 | volatile unsigned short *ptr; | |
564 | unsigned short *target=to; | |
565 | from<<=1; /* word, skip overhead */ | |
566 | ptr=(unsigned short *)(dev->mem_start+from); | |
567 | /* Leading byte? */ | |
568 | if (from&2) { | |
569 | *((char *)target)++ = *(((char *)ptr++)-1); | |
570 | count--; | |
571 | } | |
572 | while(count>=2) | |
573 | { | |
574 | *target++=*ptr++; /* Copy and */ | |
575 | ptr++; /* skip cruft */ | |
576 | count-=2; | |
577 | } | |
578 | /* Trailing byte? */ | |
579 | if(count) | |
580 | { | |
581 | /* Big endian */ | |
582 | unsigned short v=*ptr; | |
583 | *((char *)target)=v>>8; | |
584 | } | |
585 | } | |
586 | ||
587 | static void dayna_memcpy_tocard(struct net_device *dev, int to, const void *from, int count) | |
588 | { | |
589 | volatile unsigned short *ptr; | |
590 | const unsigned short *src=from; | |
591 | to<<=1; /* word, skip overhead */ | |
592 | ptr=(unsigned short *)(dev->mem_start+to); | |
593 | /* Leading byte? */ | |
594 | if (to&2) { /* avoid a byte write (stomps on other data) */ | |
595 | ptr[-1] = (ptr[-1]&0xFF00)|*((unsigned char *)src)++; | |
596 | ptr++; | |
597 | count--; | |
598 | } | |
599 | while(count>=2) | |
600 | { | |
601 | *ptr++=*src++; /* Copy and */ | |
602 | ptr++; /* skip cruft */ | |
603 | count-=2; | |
604 | } | |
605 | /* Trailing byte? */ | |
606 | if(count) | |
607 | { | |
608 | /* Big endian */ | |
609 | unsigned short v=*src; | |
610 | /* card doesn't like byte writes */ | |
611 | *ptr=(*ptr&0x00FF)|(v&0xFF00); | |
612 | } | |
613 | } | |
614 | ||
615 | /* sane block input/output */ | |
616 | static void sane_get_8390_hdr(struct net_device *dev, | |
617 | struct e8390_pkt_hdr *hdr, int ring_page) | |
618 | { | |
619 | unsigned long hdr_start = (ring_page - WD_START_PG)<<8; | |
620 | memcpy_fromio((void *)hdr, (char *)dev->mem_start + hdr_start, 4); | |
621 | /* Fix endianness */ | |
622 | hdr->count = swab16(hdr->count); | |
623 | } | |
624 | ||
625 | static void sane_block_input(struct net_device *dev, int count, | |
626 | struct sk_buff *skb, int ring_offset) | |
627 | { | |
628 | unsigned long xfer_base = ring_offset - (WD_START_PG<<8); | |
629 | unsigned long xfer_start = xfer_base + dev->mem_start; | |
630 | ||
631 | if (xfer_start + count > ei_status.rmem_end) { | |
632 | /* We must wrap the input move. */ | |
633 | int semi_count = ei_status.rmem_end - xfer_start; | |
634 | memcpy_fromio(skb->data, (char *)dev->mem_start + xfer_base, semi_count); | |
635 | count -= semi_count; | |
636 | memcpy_toio(skb->data + semi_count, (char *)ei_status.rmem_start, count); | |
637 | } else { | |
638 | memcpy_fromio(skb->data, (char *)dev->mem_start + xfer_base, count); | |
639 | } | |
640 | } | |
641 | ||
642 | static void sane_block_output(struct net_device *dev, int count, | |
643 | const unsigned char *buf, int start_page) | |
644 | { | |
645 | long shmem = (start_page - WD_START_PG)<<8; | |
646 | ||
647 | memcpy_toio((char *)dev->mem_start + shmem, buf, count); | |
648 | } | |
649 | ||
650 | /* dayna block input/output */ | |
651 | static void dayna_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page) | |
652 | { | |
653 | unsigned long hdr_start = (ring_page - WD_START_PG)<<8; | |
654 | ||
655 | dayna_memcpy_fromcard(dev, (void *)hdr, hdr_start, 4); | |
656 | /* Fix endianness */ | |
657 | hdr->count=(hdr->count&0xFF)<<8|(hdr->count>>8); | |
658 | } | |
659 | ||
660 | static void dayna_block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset) | |
661 | { | |
662 | unsigned long xfer_base = ring_offset - (WD_START_PG<<8); | |
663 | unsigned long xfer_start = xfer_base+dev->mem_start; | |
664 | ||
665 | /* Note the offset math is done in card memory space which is word | |
666 | per long onto our space. */ | |
667 | ||
668 | if (xfer_start + count > ei_status.rmem_end) | |
669 | { | |
670 | /* We must wrap the input move. */ | |
671 | int semi_count = ei_status.rmem_end - xfer_start; | |
672 | dayna_memcpy_fromcard(dev, skb->data, xfer_base, semi_count); | |
673 | count -= semi_count; | |
674 | dayna_memcpy_fromcard(dev, skb->data + semi_count, | |
675 | ei_status.rmem_start - dev->mem_start, | |
676 | count); | |
677 | } | |
678 | else | |
679 | { | |
680 | dayna_memcpy_fromcard(dev, skb->data, xfer_base, count); | |
681 | } | |
682 | } | |
683 | ||
684 | static void dayna_block_output(struct net_device *dev, int count, const unsigned char *buf, | |
685 | int start_page) | |
686 | { | |
687 | long shmem = (start_page - WD_START_PG)<<8; | |
688 | ||
689 | dayna_memcpy_tocard(dev, shmem, buf, count); | |
690 | } | |
691 | ||
692 | /* Cabletron block I/O */ | |
693 | static void slow_sane_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, | |
694 | int ring_page) | |
695 | { | |
696 | unsigned long hdr_start = (ring_page - WD_START_PG)<<8; | |
697 | word_memcpy_fromcard((void *)hdr, (char *)dev->mem_start+hdr_start, 4); | |
698 | /* Register endianism - fix here rather than 8390.c */ | |
699 | hdr->count = (hdr->count&0xFF)<<8|(hdr->count>>8); | |
700 | } | |
701 | ||
702 | static void slow_sane_block_input(struct net_device *dev, int count, struct sk_buff *skb, | |
703 | int ring_offset) | |
704 | { | |
705 | unsigned long xfer_base = ring_offset - (WD_START_PG<<8); | |
706 | unsigned long xfer_start = xfer_base+dev->mem_start; | |
707 | ||
708 | if (xfer_start + count > ei_status.rmem_end) | |
709 | { | |
710 | /* We must wrap the input move. */ | |
711 | int semi_count = ei_status.rmem_end - xfer_start; | |
712 | word_memcpy_fromcard(skb->data, (char *)dev->mem_start + | |
713 | xfer_base, semi_count); | |
714 | count -= semi_count; | |
715 | word_memcpy_fromcard(skb->data + semi_count, | |
716 | (char *)ei_status.rmem_start, count); | |
717 | } | |
718 | else | |
719 | { | |
720 | word_memcpy_fromcard(skb->data, (char *)dev->mem_start + | |
721 | xfer_base, count); | |
722 | } | |
723 | } | |
724 | ||
725 | static void slow_sane_block_output(struct net_device *dev, int count, const unsigned char *buf, | |
726 | int start_page) | |
727 | { | |
728 | long shmem = (start_page - WD_START_PG)<<8; | |
729 | ||
730 | word_memcpy_tocard((char *)dev->mem_start + shmem, buf, count); | |
731 | } | |
732 | ||
733 | static void word_memcpy_tocard(void *tp, const void *fp, int count) | |
734 | { | |
735 | volatile unsigned short *to = tp; | |
736 | const unsigned short *from = fp; | |
737 | ||
738 | count++; | |
739 | count/=2; | |
740 | ||
741 | while(count--) | |
742 | *to++=*from++; | |
743 | } | |
744 | ||
745 | static void word_memcpy_fromcard(void *tp, const void *fp, int count) | |
746 | { | |
747 | unsigned short *to = tp; | |
748 | const volatile unsigned short *from = fp; | |
749 | ||
750 | count++; | |
751 | count/=2; | |
752 | ||
753 | while(count--) | |
754 | *to++=*from++; | |
755 | } | |
756 | ||
757 |