1 | // SPDX-License-Identifier: GPL-1.0+ |
2 | /* mac8390.c: New driver for 8390-based Nubus (or Nubus-alike) |
3 | Ethernet cards on Linux */ |
4 | /* Based on the former daynaport.c driver, by Alan Cox. Some code |
5 | taken from or inspired by skeleton.c by Donald Becker, acenic.c by |
6 | Jes Sorensen, and ne2k-pci.c by Donald Becker and Paul Gortmaker. */ |
7 | |
8 | /* 2000-02-28: support added for Dayna and Kinetics cards by |
9 | A.G.deWijn@phys.uu.nl */ |
10 | /* 2000-04-04: support added for Dayna2 by bart@etpmod.phys.tue.nl */ |
11 | /* 2001-04-18: support for DaynaPort E/LC-M by rayk@knightsmanor.org */ |
12 | /* 2001-05-15: support for Cabletron ported from old daynaport driver |
13 | * and fixed access to Sonic Sys card which masquerades as a Farallon |
14 | * by rayk@knightsmanor.org */ |
15 | /* 2002-12-30: Try to support more cards, some clues from NetBSD driver */ |
16 | /* 2003-12-26: Make sure Asante cards always work. */ |
17 | |
18 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
19 | |
20 | #include <linux/module.h> |
21 | #include <linux/kernel.h> |
22 | #include <linux/types.h> |
23 | #include <linux/fcntl.h> |
24 | #include <linux/interrupt.h> |
25 | #include <linux/ptrace.h> |
26 | #include <linux/ioport.h> |
27 | #include <linux/nubus.h> |
28 | #include <linux/in.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 | #include <linux/io.h> |
37 | |
38 | #include <asm/dma.h> |
39 | #include <asm/hwtest.h> |
40 | #include <asm/macints.h> |
41 | |
42 | static char version[] = |
43 | "v0.4 2001-05-15 David Huggins-Daines <dhd@debian.org> and others\n" ; |
44 | |
45 | #define EI_SHIFT(x) (ei_local->reg_offset[x]) |
46 | #define ei_inb(port) in_8(port) |
47 | #define ei_outb(val, port) out_8(port, val) |
48 | #define ei_inb_p(port) in_8(port) |
49 | #define ei_outb_p(val, port) out_8(port, val) |
50 | |
51 | #include "lib8390.c" |
52 | |
53 | #define WD_START_PG 0x00 /* First page of TX buffer */ |
54 | #define CABLETRON_RX_START_PG 0x00 /* First page of RX buffer */ |
55 | #define CABLETRON_RX_STOP_PG 0x30 /* Last page +1 of RX ring */ |
56 | #define CABLETRON_TX_START_PG CABLETRON_RX_STOP_PG |
57 | /* First page of TX buffer */ |
58 | |
59 | /* |
60 | * Unfortunately it seems we have to hardcode these for the moment |
61 | * Shouldn't the card know about this? |
62 | * Does anyone know where to read it off the card? |
63 | * Do we trust the data provided by the card? |
64 | */ |
65 | |
66 | #define DAYNA_8390_BASE 0x80000 |
67 | #define DAYNA_8390_MEM 0x00000 |
68 | |
69 | #define CABLETRON_8390_BASE 0x90000 |
70 | #define CABLETRON_8390_MEM 0x00000 |
71 | |
72 | #define INTERLAN_8390_BASE 0xE0000 |
73 | #define INTERLAN_8390_MEM 0xD0000 |
74 | |
75 | enum mac8390_type { |
76 | MAC8390_NONE = -1, |
77 | MAC8390_APPLE, |
78 | MAC8390_ASANTE, |
79 | MAC8390_FARALLON, |
80 | MAC8390_CABLETRON, |
81 | MAC8390_DAYNA, |
82 | MAC8390_INTERLAN, |
83 | MAC8390_KINETICS, |
84 | }; |
85 | |
86 | static const char *cardname[] = { |
87 | "apple" , |
88 | "asante" , |
89 | "farallon" , |
90 | "cabletron" , |
91 | "dayna" , |
92 | "interlan" , |
93 | "kinetics" , |
94 | }; |
95 | |
96 | static const int word16[] = { |
97 | 1, /* apple */ |
98 | 1, /* asante */ |
99 | 1, /* farallon */ |
100 | 1, /* cabletron */ |
101 | 0, /* dayna */ |
102 | 1, /* interlan */ |
103 | 0, /* kinetics */ |
104 | }; |
105 | |
106 | /* on which cards do we use NuBus resources? */ |
107 | static const int useresources[] = { |
108 | 1, /* apple */ |
109 | 1, /* asante */ |
110 | 1, /* farallon */ |
111 | 0, /* cabletron */ |
112 | 0, /* dayna */ |
113 | 0, /* interlan */ |
114 | 0, /* kinetics */ |
115 | }; |
116 | |
117 | enum mac8390_access { |
118 | ACCESS_UNKNOWN = 0, |
119 | ACCESS_32, |
120 | ACCESS_16, |
121 | }; |
122 | |
123 | extern int mac8390_memtest(struct net_device *dev); |
124 | static int mac8390_initdev(struct net_device *dev, struct nubus_board *board, |
125 | enum mac8390_type type); |
126 | |
127 | static int mac8390_open(struct net_device *dev); |
128 | static int mac8390_close(struct net_device *dev); |
129 | static void mac8390_no_reset(struct net_device *dev); |
130 | static void interlan_reset(struct net_device *dev); |
131 | |
132 | /* Sane (32-bit chunk memory read/write) - Some Farallon and Apple do this*/ |
133 | static void sane_get_8390_hdr(struct net_device *dev, |
134 | struct e8390_pkt_hdr *hdr, int ring_page); |
135 | static void sane_block_input(struct net_device *dev, int count, |
136 | struct sk_buff *skb, int ring_offset); |
137 | static void sane_block_output(struct net_device *dev, int count, |
138 | const unsigned char *buf, const int start_page); |
139 | |
140 | /* dayna_memcpy to and from card */ |
141 | static void dayna_memcpy_fromcard(struct net_device *dev, void *to, |
142 | int from, int count); |
143 | static void dayna_memcpy_tocard(struct net_device *dev, int to, |
144 | const void *from, int count); |
145 | |
146 | /* Dayna - Dayna/Kinetics use this */ |
147 | static void dayna_get_8390_hdr(struct net_device *dev, |
148 | struct e8390_pkt_hdr *hdr, int ring_page); |
149 | static void dayna_block_input(struct net_device *dev, int count, |
150 | struct sk_buff *skb, int ring_offset); |
151 | static void dayna_block_output(struct net_device *dev, int count, |
152 | const unsigned char *buf, int start_page); |
153 | |
154 | /* Slow Sane (16-bit chunk memory read/write) Cabletron uses this */ |
155 | static void slow_sane_get_8390_hdr(struct net_device *dev, |
156 | struct e8390_pkt_hdr *hdr, int ring_page); |
157 | static void slow_sane_block_input(struct net_device *dev, int count, |
158 | struct sk_buff *skb, int ring_offset); |
159 | static void slow_sane_block_output(struct net_device *dev, int count, |
160 | const unsigned char *buf, int start_page); |
161 | static void word_memcpy_tocard(unsigned long tp, const void *fp, int count); |
162 | static void word_memcpy_fromcard(void *tp, unsigned long fp, int count); |
163 | |
164 | static enum mac8390_type mac8390_ident(struct nubus_rsrc *fres) |
165 | { |
166 | switch (fres->dr_sw) { |
167 | case NUBUS_DRSW_3COM: |
168 | switch (fres->dr_hw) { |
169 | case NUBUS_DRHW_APPLE_SONIC_NB: |
170 | case NUBUS_DRHW_APPLE_SONIC_LC: |
171 | case NUBUS_DRHW_SONNET: |
172 | return MAC8390_NONE; |
173 | default: |
174 | return MAC8390_APPLE; |
175 | } |
176 | |
177 | case NUBUS_DRSW_APPLE: |
178 | switch (fres->dr_hw) { |
179 | case NUBUS_DRHW_ASANTE_LC: |
180 | return MAC8390_NONE; |
181 | case NUBUS_DRHW_CABLETRON: |
182 | return MAC8390_CABLETRON; |
183 | default: |
184 | return MAC8390_APPLE; |
185 | } |
186 | |
187 | case NUBUS_DRSW_ASANTE: |
188 | return MAC8390_ASANTE; |
189 | |
190 | case NUBUS_DRSW_TECHWORKS: |
191 | case NUBUS_DRSW_DAYNA2: |
192 | case NUBUS_DRSW_DAYNA_LC: |
193 | if (fres->dr_hw == NUBUS_DRHW_CABLETRON) |
194 | return MAC8390_CABLETRON; |
195 | else |
196 | return MAC8390_APPLE; |
197 | |
198 | case NUBUS_DRSW_FARALLON: |
199 | return MAC8390_FARALLON; |
200 | |
201 | case NUBUS_DRSW_KINETICS: |
202 | switch (fres->dr_hw) { |
203 | case NUBUS_DRHW_INTERLAN: |
204 | return MAC8390_INTERLAN; |
205 | default: |
206 | return MAC8390_KINETICS; |
207 | } |
208 | |
209 | case NUBUS_DRSW_DAYNA: |
210 | /* |
211 | * These correspond to Dayna Sonic cards |
212 | * which use the macsonic driver |
213 | */ |
214 | if (fres->dr_hw == NUBUS_DRHW_SMC9194 || |
215 | fres->dr_hw == NUBUS_DRHW_INTERLAN) |
216 | return MAC8390_NONE; |
217 | else |
218 | return MAC8390_DAYNA; |
219 | } |
220 | return MAC8390_NONE; |
221 | } |
222 | |
223 | static enum mac8390_access mac8390_testio(unsigned long membase) |
224 | { |
225 | u32 outdata = 0xA5A0B5B0; |
226 | u32 indata = 0; |
227 | |
228 | /* Try writing 32 bits */ |
229 | nubus_writel(outdata, membase); |
230 | /* Now read it back */ |
231 | indata = nubus_readl(membase); |
232 | if (outdata == indata) |
233 | return ACCESS_32; |
234 | |
235 | outdata = 0xC5C0D5D0; |
236 | indata = 0; |
237 | |
238 | /* Write 16 bit output */ |
239 | word_memcpy_tocard(tp: membase, fp: &outdata, count: 4); |
240 | /* Now read it back */ |
241 | word_memcpy_fromcard(tp: &indata, fp: membase, count: 4); |
242 | if (outdata == indata) |
243 | return ACCESS_16; |
244 | |
245 | return ACCESS_UNKNOWN; |
246 | } |
247 | |
248 | static int mac8390_memsize(unsigned long membase) |
249 | { |
250 | unsigned long flags; |
251 | int i, j; |
252 | |
253 | local_irq_save(flags); |
254 | /* Check up to 32K in 4K increments */ |
255 | for (i = 0; i < 8; i++) { |
256 | volatile unsigned short *m = (unsigned short *)(membase + (i * 0x1000)); |
257 | |
258 | /* Unwriteable - we have a fully decoded card and the |
259 | RAM end located */ |
260 | if (hwreg_present(m) == 0) |
261 | break; |
262 | |
263 | /* write a distinctive byte */ |
264 | *m = 0xA5A0 | i; |
265 | /* check that we read back what we wrote */ |
266 | if (*m != (0xA5A0 | i)) |
267 | break; |
268 | |
269 | /* check for partial decode and wrap */ |
270 | for (j = 0; j < i; j++) { |
271 | volatile unsigned short *p = (unsigned short *)(membase + (j * 0x1000)); |
272 | if (*p != (0xA5A0 | j)) |
273 | break; |
274 | } |
275 | } |
276 | local_irq_restore(flags); |
277 | /* |
278 | * in any case, we stopped once we tried one block too many, |
279 | * or once we reached 32K |
280 | */ |
281 | return i * 0x1000; |
282 | } |
283 | |
284 | static bool mac8390_rsrc_init(struct net_device *dev, |
285 | struct nubus_rsrc *fres, |
286 | enum mac8390_type cardtype) |
287 | { |
288 | struct nubus_board *board = fres->board; |
289 | struct nubus_dir dir; |
290 | struct nubus_dirent ent; |
291 | int offset; |
292 | volatile unsigned short *i; |
293 | u8 addr[ETH_ALEN]; |
294 | |
295 | dev->irq = SLOT2IRQ(board->slot); |
296 | /* This is getting to be a habit */ |
297 | dev->base_addr = board->slot_addr | ((board->slot & 0xf) << 20); |
298 | |
299 | /* |
300 | * Get some Nubus info - we will trust the card's idea |
301 | * of where its memory and registers are. |
302 | */ |
303 | |
304 | if (nubus_get_func_dir(fres, dir: &dir) == -1) { |
305 | dev_err(&board->dev, |
306 | "Unable to get Nubus functional directory\n" ); |
307 | return false; |
308 | } |
309 | |
310 | /* Get the MAC address */ |
311 | if (nubus_find_rsrc(dir: &dir, rsrc_type: NUBUS_RESID_MAC_ADDRESS, ent: &ent) == -1) { |
312 | dev_info(&board->dev, "MAC address resource not found\n" ); |
313 | return false; |
314 | } |
315 | |
316 | nubus_get_rsrc_mem(dest: addr, dirent: &ent, len: 6); |
317 | eth_hw_addr_set(dev, addr); |
318 | |
319 | if (useresources[cardtype] == 1) { |
320 | nubus_rewinddir(dir: &dir); |
321 | if (nubus_find_rsrc(dir: &dir, rsrc_type: NUBUS_RESID_MINOR_BASEOS, |
322 | ent: &ent) == -1) { |
323 | dev_err(&board->dev, |
324 | "Memory offset resource not found\n" ); |
325 | return false; |
326 | } |
327 | nubus_get_rsrc_mem(dest: &offset, dirent: &ent, len: 4); |
328 | dev->mem_start = dev->base_addr + offset; |
329 | /* yes, this is how the Apple driver does it */ |
330 | dev->base_addr = dev->mem_start + 0x10000; |
331 | nubus_rewinddir(dir: &dir); |
332 | if (nubus_find_rsrc(dir: &dir, rsrc_type: NUBUS_RESID_MINOR_LENGTH, |
333 | ent: &ent) == -1) { |
334 | dev_info(&board->dev, |
335 | "Memory length resource not found, probing\n" ); |
336 | offset = mac8390_memsize(membase: dev->mem_start); |
337 | } else { |
338 | nubus_get_rsrc_mem(dest: &offset, dirent: &ent, len: 4); |
339 | } |
340 | dev->mem_end = dev->mem_start + offset; |
341 | } else { |
342 | switch (cardtype) { |
343 | case MAC8390_KINETICS: |
344 | case MAC8390_DAYNA: /* it's the same */ |
345 | dev->base_addr = (int)(board->slot_addr + |
346 | DAYNA_8390_BASE); |
347 | dev->mem_start = (int)(board->slot_addr + |
348 | DAYNA_8390_MEM); |
349 | dev->mem_end = dev->mem_start + |
350 | mac8390_memsize(membase: dev->mem_start); |
351 | break; |
352 | case MAC8390_INTERLAN: |
353 | dev->base_addr = (int)(board->slot_addr + |
354 | INTERLAN_8390_BASE); |
355 | dev->mem_start = (int)(board->slot_addr + |
356 | INTERLAN_8390_MEM); |
357 | dev->mem_end = dev->mem_start + |
358 | mac8390_memsize(membase: dev->mem_start); |
359 | break; |
360 | case MAC8390_CABLETRON: |
361 | dev->base_addr = (int)(board->slot_addr + |
362 | CABLETRON_8390_BASE); |
363 | dev->mem_start = (int)(board->slot_addr + |
364 | CABLETRON_8390_MEM); |
365 | /* The base address is unreadable if 0x00 |
366 | * has been written to the command register |
367 | * Reset the chip by writing E8390_NODMA + |
368 | * E8390_PAGE0 + E8390_STOP just to be |
369 | * sure |
370 | */ |
371 | i = (void *)dev->base_addr; |
372 | *i = 0x21; |
373 | dev->mem_end = dev->mem_start + |
374 | mac8390_memsize(membase: dev->mem_start); |
375 | break; |
376 | |
377 | default: |
378 | dev_err(&board->dev, |
379 | "No known base address for card type\n" ); |
380 | return false; |
381 | } |
382 | } |
383 | |
384 | return true; |
385 | } |
386 | |
387 | static int mac8390_device_probe(struct nubus_board *board) |
388 | { |
389 | struct net_device *dev; |
390 | int err = -ENODEV; |
391 | struct nubus_rsrc *fres; |
392 | enum mac8390_type cardtype = MAC8390_NONE; |
393 | |
394 | dev = ____alloc_ei_netdev(size: 0); |
395 | if (!dev) |
396 | return -ENOMEM; |
397 | |
398 | SET_NETDEV_DEV(dev, &board->dev); |
399 | |
400 | for_each_board_func_rsrc(board, fres) { |
401 | if (fres->category != NUBUS_CAT_NETWORK || |
402 | fres->type != NUBUS_TYPE_ETHERNET) |
403 | continue; |
404 | |
405 | cardtype = mac8390_ident(fres); |
406 | if (cardtype == MAC8390_NONE) |
407 | continue; |
408 | |
409 | if (mac8390_rsrc_init(dev, fres, cardtype)) |
410 | break; |
411 | } |
412 | if (!fres) |
413 | goto out; |
414 | |
415 | err = mac8390_initdev(dev, board, type: cardtype); |
416 | if (err) |
417 | goto out; |
418 | |
419 | err = register_netdev(dev); |
420 | if (err) |
421 | goto out; |
422 | |
423 | nubus_set_drvdata(board, data: dev); |
424 | return 0; |
425 | |
426 | out: |
427 | free_netdev(dev); |
428 | return err; |
429 | } |
430 | |
431 | static void mac8390_device_remove(struct nubus_board *board) |
432 | { |
433 | struct net_device *dev = nubus_get_drvdata(board); |
434 | |
435 | unregister_netdev(dev); |
436 | free_netdev(dev); |
437 | } |
438 | |
439 | static struct nubus_driver mac8390_driver = { |
440 | .probe = mac8390_device_probe, |
441 | .remove = mac8390_device_remove, |
442 | .driver = { |
443 | .name = KBUILD_MODNAME, |
444 | .owner = THIS_MODULE, |
445 | } |
446 | }; |
447 | |
448 | MODULE_AUTHOR("David Huggins-Daines <dhd@debian.org> and others" ); |
449 | MODULE_DESCRIPTION("Macintosh NS8390-based Nubus Ethernet driver" ); |
450 | MODULE_LICENSE("GPL" ); |
451 | |
452 | static int __init mac8390_init(void) |
453 | { |
454 | return nubus_driver_register(ndrv: &mac8390_driver); |
455 | } |
456 | module_init(mac8390_init); |
457 | |
458 | static void __exit mac8390_exit(void) |
459 | { |
460 | nubus_driver_unregister(ndrv: &mac8390_driver); |
461 | } |
462 | module_exit(mac8390_exit); |
463 | |
464 | static const struct net_device_ops mac8390_netdev_ops = { |
465 | .ndo_open = mac8390_open, |
466 | .ndo_stop = mac8390_close, |
467 | .ndo_start_xmit = __ei_start_xmit, |
468 | .ndo_tx_timeout = __ei_tx_timeout, |
469 | .ndo_get_stats = __ei_get_stats, |
470 | .ndo_set_rx_mode = __ei_set_multicast_list, |
471 | .ndo_validate_addr = eth_validate_addr, |
472 | .ndo_set_mac_address = eth_mac_addr, |
473 | #ifdef CONFIG_NET_POLL_CONTROLLER |
474 | .ndo_poll_controller = __ei_poll, |
475 | #endif |
476 | }; |
477 | |
478 | static int mac8390_initdev(struct net_device *dev, struct nubus_board *board, |
479 | enum mac8390_type type) |
480 | { |
481 | static u32 fwrd4_offsets[16] = { |
482 | 0, 4, 8, 12, |
483 | 16, 20, 24, 28, |
484 | 32, 36, 40, 44, |
485 | 48, 52, 56, 60 |
486 | }; |
487 | static u32 back4_offsets[16] = { |
488 | 60, 56, 52, 48, |
489 | 44, 40, 36, 32, |
490 | 28, 24, 20, 16, |
491 | 12, 8, 4, 0 |
492 | }; |
493 | static u32 fwrd2_offsets[16] = { |
494 | 0, 2, 4, 6, |
495 | 8, 10, 12, 14, |
496 | 16, 18, 20, 22, |
497 | 24, 26, 28, 30 |
498 | }; |
499 | |
500 | int access_bitmode = 0; |
501 | |
502 | /* Now fill in our stuff */ |
503 | dev->netdev_ops = &mac8390_netdev_ops; |
504 | |
505 | /* GAR, ei_status is actually a macro even though it looks global */ |
506 | ei_status.name = cardname[type]; |
507 | ei_status.word16 = word16[type]; |
508 | |
509 | /* Cabletron's TX/RX buffers are backwards */ |
510 | if (type == MAC8390_CABLETRON) { |
511 | ei_status.tx_start_page = CABLETRON_TX_START_PG; |
512 | ei_status.rx_start_page = CABLETRON_RX_START_PG; |
513 | ei_status.stop_page = CABLETRON_RX_STOP_PG; |
514 | ei_status.rmem_start = dev->mem_start; |
515 | ei_status.rmem_end = dev->mem_start + CABLETRON_RX_STOP_PG*256; |
516 | } else { |
517 | ei_status.tx_start_page = WD_START_PG; |
518 | ei_status.rx_start_page = WD_START_PG + TX_PAGES; |
519 | ei_status.stop_page = (dev->mem_end - dev->mem_start)/256; |
520 | ei_status.rmem_start = dev->mem_start + TX_PAGES*256; |
521 | ei_status.rmem_end = dev->mem_end; |
522 | } |
523 | |
524 | /* Fill in model-specific information and functions */ |
525 | switch (type) { |
526 | case MAC8390_FARALLON: |
527 | case MAC8390_APPLE: |
528 | switch (mac8390_testio(membase: dev->mem_start)) { |
529 | case ACCESS_UNKNOWN: |
530 | dev_err(&board->dev, |
531 | "Don't know how to access card memory\n" ); |
532 | return -ENODEV; |
533 | |
534 | case ACCESS_16: |
535 | /* 16 bit card, register map is reversed */ |
536 | ei_status.reset_8390 = mac8390_no_reset; |
537 | ei_status.block_input = slow_sane_block_input; |
538 | ei_status.block_output = slow_sane_block_output; |
539 | ei_status.get_8390_hdr = slow_sane_get_8390_hdr; |
540 | ei_status.reg_offset = back4_offsets; |
541 | break; |
542 | |
543 | case ACCESS_32: |
544 | /* 32 bit card, register map is reversed */ |
545 | ei_status.reset_8390 = mac8390_no_reset; |
546 | ei_status.block_input = sane_block_input; |
547 | ei_status.block_output = sane_block_output; |
548 | ei_status.get_8390_hdr = sane_get_8390_hdr; |
549 | ei_status.reg_offset = back4_offsets; |
550 | access_bitmode = 1; |
551 | break; |
552 | } |
553 | break; |
554 | |
555 | case MAC8390_ASANTE: |
556 | /* Some Asante cards pass the 32 bit test |
557 | * but overwrite system memory when run at 32 bit. |
558 | * so we run them all at 16 bit. |
559 | */ |
560 | ei_status.reset_8390 = mac8390_no_reset; |
561 | ei_status.block_input = slow_sane_block_input; |
562 | ei_status.block_output = slow_sane_block_output; |
563 | ei_status.get_8390_hdr = slow_sane_get_8390_hdr; |
564 | ei_status.reg_offset = back4_offsets; |
565 | break; |
566 | |
567 | case MAC8390_CABLETRON: |
568 | /* 16 bit card, register map is short forward */ |
569 | ei_status.reset_8390 = mac8390_no_reset; |
570 | ei_status.block_input = slow_sane_block_input; |
571 | ei_status.block_output = slow_sane_block_output; |
572 | ei_status.get_8390_hdr = slow_sane_get_8390_hdr; |
573 | ei_status.reg_offset = fwrd2_offsets; |
574 | break; |
575 | |
576 | case MAC8390_DAYNA: |
577 | case MAC8390_KINETICS: |
578 | /* 16 bit memory, register map is forward */ |
579 | /* dayna and similar */ |
580 | ei_status.reset_8390 = mac8390_no_reset; |
581 | ei_status.block_input = dayna_block_input; |
582 | ei_status.block_output = dayna_block_output; |
583 | ei_status.get_8390_hdr = dayna_get_8390_hdr; |
584 | ei_status.reg_offset = fwrd4_offsets; |
585 | break; |
586 | |
587 | case MAC8390_INTERLAN: |
588 | /* 16 bit memory, register map is forward */ |
589 | ei_status.reset_8390 = interlan_reset; |
590 | ei_status.block_input = slow_sane_block_input; |
591 | ei_status.block_output = slow_sane_block_output; |
592 | ei_status.get_8390_hdr = slow_sane_get_8390_hdr; |
593 | ei_status.reg_offset = fwrd4_offsets; |
594 | break; |
595 | |
596 | default: |
597 | dev_err(&board->dev, "Unsupported card type\n" ); |
598 | return -ENODEV; |
599 | } |
600 | |
601 | __NS8390_init(dev, startp: 0); |
602 | |
603 | /* Good, done, now spit out some messages */ |
604 | dev_info(&board->dev, "%s (type %s)\n" , board->name, cardname[type]); |
605 | dev_info(&board->dev, "MAC %pM, IRQ %d, %d KB shared memory at %#lx, %d-bit access.\n" , |
606 | dev->dev_addr, dev->irq, |
607 | (unsigned int)(dev->mem_end - dev->mem_start) >> 10, |
608 | dev->mem_start, access_bitmode ? 32 : 16); |
609 | return 0; |
610 | } |
611 | |
612 | static int mac8390_open(struct net_device *dev) |
613 | { |
614 | int err; |
615 | |
616 | __ei_open(dev); |
617 | err = request_irq(irq: dev->irq, handler: __ei_interrupt, flags: 0, name: "8390 Ethernet" , dev); |
618 | if (err) |
619 | pr_err("%s: unable to get IRQ %d\n" , dev->name, dev->irq); |
620 | return err; |
621 | } |
622 | |
623 | static int mac8390_close(struct net_device *dev) |
624 | { |
625 | free_irq(dev->irq, dev); |
626 | __ei_close(dev); |
627 | return 0; |
628 | } |
629 | |
630 | static void mac8390_no_reset(struct net_device *dev) |
631 | { |
632 | struct ei_device *ei_local = netdev_priv(dev); |
633 | |
634 | ei_status.txing = 0; |
635 | netif_info(ei_local, hw, dev, "reset not supported\n" ); |
636 | } |
637 | |
638 | static void interlan_reset(struct net_device *dev) |
639 | { |
640 | unsigned char *target = nubus_slot_addr(slot: IRQ2SLOT(dev->irq)); |
641 | struct ei_device *ei_local = netdev_priv(dev); |
642 | |
643 | netif_info(ei_local, hw, dev, "Need to reset the NS8390 t=%lu..." , |
644 | jiffies); |
645 | ei_status.txing = 0; |
646 | target[0xC0000] = 0; |
647 | if (netif_msg_hw(ei_local)) |
648 | pr_cont("reset complete\n" ); |
649 | } |
650 | |
651 | /* dayna_memcpy_fromio/dayna_memcpy_toio */ |
652 | /* directly from daynaport.c by Alan Cox */ |
653 | static void dayna_memcpy_fromcard(struct net_device *dev, void *to, int from, |
654 | int count) |
655 | { |
656 | volatile unsigned char *ptr; |
657 | unsigned char *target = to; |
658 | from <<= 1; /* word, skip overhead */ |
659 | ptr = (unsigned char *)(dev->mem_start+from); |
660 | /* Leading byte? */ |
661 | if (from & 2) { |
662 | *target++ = ptr[-1]; |
663 | ptr += 2; |
664 | count--; |
665 | } |
666 | while (count >= 2) { |
667 | *(unsigned short *)target = *(unsigned short volatile *)ptr; |
668 | ptr += 4; /* skip cruft */ |
669 | target += 2; |
670 | count -= 2; |
671 | } |
672 | /* Trailing byte? */ |
673 | if (count) |
674 | *target = *ptr; |
675 | } |
676 | |
677 | static void dayna_memcpy_tocard(struct net_device *dev, int to, |
678 | const void *from, int count) |
679 | { |
680 | volatile unsigned short *ptr; |
681 | const unsigned char *src = from; |
682 | to <<= 1; /* word, skip overhead */ |
683 | ptr = (unsigned short *)(dev->mem_start+to); |
684 | /* Leading byte? */ |
685 | if (to & 2) { /* avoid a byte write (stomps on other data) */ |
686 | ptr[-1] = (ptr[-1]&0xFF00)|*src++; |
687 | ptr++; |
688 | count--; |
689 | } |
690 | while (count >= 2) { |
691 | *ptr++ = *(unsigned short *)src; /* Copy and */ |
692 | ptr++; /* skip cruft */ |
693 | src += 2; |
694 | count -= 2; |
695 | } |
696 | /* Trailing byte? */ |
697 | if (count) { |
698 | /* card doesn't like byte writes */ |
699 | *ptr = (*ptr & 0x00FF) | (*src << 8); |
700 | } |
701 | } |
702 | |
703 | /* sane block input/output */ |
704 | static void sane_get_8390_hdr(struct net_device *dev, |
705 | struct e8390_pkt_hdr *hdr, int ring_page) |
706 | { |
707 | unsigned long hdr_start = (ring_page - WD_START_PG)<<8; |
708 | memcpy_fromio(hdr, (void __iomem *)dev->mem_start + hdr_start, 4); |
709 | /* Fix endianness */ |
710 | hdr->count = swab16(hdr->count); |
711 | } |
712 | |
713 | static void sane_block_input(struct net_device *dev, int count, |
714 | struct sk_buff *skb, int ring_offset) |
715 | { |
716 | unsigned long xfer_base = ring_offset - (WD_START_PG<<8); |
717 | unsigned long xfer_start = xfer_base + dev->mem_start; |
718 | |
719 | if (xfer_start + count > ei_status.rmem_end) { |
720 | /* We must wrap the input move. */ |
721 | int semi_count = ei_status.rmem_end - xfer_start; |
722 | memcpy_fromio(skb->data, |
723 | (void __iomem *)dev->mem_start + xfer_base, |
724 | semi_count); |
725 | count -= semi_count; |
726 | memcpy_fromio(skb->data + semi_count, |
727 | (void __iomem *)ei_status.rmem_start, count); |
728 | } else { |
729 | memcpy_fromio(skb->data, |
730 | (void __iomem *)dev->mem_start + xfer_base, |
731 | count); |
732 | } |
733 | } |
734 | |
735 | static void sane_block_output(struct net_device *dev, int count, |
736 | const unsigned char *buf, int start_page) |
737 | { |
738 | long shmem = (start_page - WD_START_PG)<<8; |
739 | |
740 | memcpy_toio((void __iomem *)dev->mem_start + shmem, buf, count); |
741 | } |
742 | |
743 | /* dayna block input/output */ |
744 | static void dayna_get_8390_hdr(struct net_device *dev, |
745 | struct e8390_pkt_hdr *hdr, int ring_page) |
746 | { |
747 | unsigned long hdr_start = (ring_page - WD_START_PG)<<8; |
748 | |
749 | dayna_memcpy_fromcard(dev, to: hdr, from: hdr_start, count: 4); |
750 | /* Fix endianness */ |
751 | hdr->count = (hdr->count & 0xFF) << 8 | (hdr->count >> 8); |
752 | } |
753 | |
754 | static void dayna_block_input(struct net_device *dev, int count, |
755 | struct sk_buff *skb, int ring_offset) |
756 | { |
757 | unsigned long xfer_base = ring_offset - (WD_START_PG<<8); |
758 | unsigned long xfer_start = xfer_base+dev->mem_start; |
759 | |
760 | /* Note the offset math is done in card memory space which is word |
761 | per long onto our space. */ |
762 | |
763 | if (xfer_start + count > ei_status.rmem_end) { |
764 | /* We must wrap the input move. */ |
765 | int semi_count = ei_status.rmem_end - xfer_start; |
766 | dayna_memcpy_fromcard(dev, to: skb->data, from: xfer_base, count: semi_count); |
767 | count -= semi_count; |
768 | dayna_memcpy_fromcard(dev, to: skb->data + semi_count, |
769 | ei_status.rmem_start - dev->mem_start, |
770 | count); |
771 | } else { |
772 | dayna_memcpy_fromcard(dev, to: skb->data, from: xfer_base, count); |
773 | } |
774 | } |
775 | |
776 | static void dayna_block_output(struct net_device *dev, int count, |
777 | const unsigned char *buf, |
778 | int start_page) |
779 | { |
780 | long shmem = (start_page - WD_START_PG)<<8; |
781 | |
782 | dayna_memcpy_tocard(dev, to: shmem, from: buf, count); |
783 | } |
784 | |
785 | /* Cabletron block I/O */ |
786 | static void slow_sane_get_8390_hdr(struct net_device *dev, |
787 | struct e8390_pkt_hdr *hdr, |
788 | int ring_page) |
789 | { |
790 | unsigned long hdr_start = (ring_page - WD_START_PG)<<8; |
791 | word_memcpy_fromcard(tp: hdr, fp: dev->mem_start + hdr_start, count: 4); |
792 | /* Register endianism - fix here rather than 8390.c */ |
793 | hdr->count = (hdr->count&0xFF)<<8|(hdr->count>>8); |
794 | } |
795 | |
796 | static void slow_sane_block_input(struct net_device *dev, int count, |
797 | struct sk_buff *skb, int ring_offset) |
798 | { |
799 | unsigned long xfer_base = ring_offset - (WD_START_PG<<8); |
800 | unsigned long xfer_start = xfer_base+dev->mem_start; |
801 | |
802 | if (xfer_start + count > ei_status.rmem_end) { |
803 | /* We must wrap the input move. */ |
804 | int semi_count = ei_status.rmem_end - xfer_start; |
805 | word_memcpy_fromcard(tp: skb->data, fp: dev->mem_start + xfer_base, |
806 | count: semi_count); |
807 | count -= semi_count; |
808 | word_memcpy_fromcard(tp: skb->data + semi_count, |
809 | ei_status.rmem_start, count); |
810 | } else { |
811 | word_memcpy_fromcard(tp: skb->data, fp: dev->mem_start + xfer_base, |
812 | count); |
813 | } |
814 | } |
815 | |
816 | static void slow_sane_block_output(struct net_device *dev, int count, |
817 | const unsigned char *buf, int start_page) |
818 | { |
819 | long shmem = (start_page - WD_START_PG)<<8; |
820 | |
821 | word_memcpy_tocard(tp: dev->mem_start + shmem, fp: buf, count); |
822 | } |
823 | |
824 | static void word_memcpy_tocard(unsigned long tp, const void *fp, int count) |
825 | { |
826 | volatile unsigned short *to = (void *)tp; |
827 | const unsigned short *from = fp; |
828 | |
829 | count++; |
830 | count /= 2; |
831 | |
832 | while (count--) |
833 | *to++ = *from++; |
834 | } |
835 | |
836 | static void word_memcpy_fromcard(void *tp, unsigned long fp, int count) |
837 | { |
838 | unsigned short *to = tp; |
839 | const volatile unsigned short *from = (const void *)fp; |
840 | |
841 | count++; |
842 | count /= 2; |
843 | |
844 | while (count--) |
845 | *to++ = *from++; |
846 | } |
847 | |
848 | |
849 | |