[BNX2]: Move rx indexes into bnx2_napi struct.
[linux-2.6.git] / drivers / net / mac8390.c
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 /* 2002-12-30: Try to support more cards, some clues from NetBSD driver */
18 /* 2003-12-26: Make sure Asante cards always work. */
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/slab.h>
30 #include <linux/string.h>
31 #include <linux/errno.h>
32 #include <linux/init.h>
33 #include <linux/netdevice.h>
34 #include <linux/etherdevice.h>
35 #include <linux/skbuff.h>
36 #include <linux/bitops.h>
37
38 #include <asm/system.h>
39 #include <asm/io.h>
40 #include <asm/dma.h>
41 #include <asm/hwtest.h>
42 #include <asm/macints.h>
43
44 static char version[] =
45         "mac8390.c: v0.4 2001-05-15 David Huggins-Daines <dhd@debian.org> and others\n";
46
47 #define EI_SHIFT(x)     (ei_local->reg_offset[x])
48 #define ei_inb(port)   in_8(port)
49 #define ei_outb(val,port)  out_8(port,val)
50 #define ei_inb_p(port)   in_8(port)
51 #define ei_outb_p(val,port)  out_8(port,val)
52
53 #include "lib8390.c"
54
55 #define WD_START_PG                     0x00    /* First page of TX buffer */
56 #define CABLETRON_RX_START_PG           0x00    /* First page of RX buffer */
57 #define CABLETRON_RX_STOP_PG            0x30    /* Last page +1 of RX ring */
58 #define CABLETRON_TX_START_PG           CABLETRON_RX_STOP_PG  /* First page of TX buffer */
59
60 /* Unfortunately it seems we have to hardcode these for the moment */
61 /* 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? */
62
63 #define DAYNA_8390_BASE         0x80000
64 #define DAYNA_8390_MEM          0x00000
65
66 #define CABLETRON_8390_BASE     0x90000
67 #define CABLETRON_8390_MEM      0x00000
68
69 #define INTERLAN_8390_BASE      0xE0000
70 #define INTERLAN_8390_MEM       0xD0000
71
72 enum mac8390_type {
73         MAC8390_NONE = -1,
74         MAC8390_APPLE,
75         MAC8390_ASANTE,
76         MAC8390_FARALLON,
77         MAC8390_CABLETRON,
78         MAC8390_DAYNA,
79         MAC8390_INTERLAN,
80         MAC8390_KINETICS,
81 };
82
83 static const char * cardname[] = {
84         "apple",
85         "asante",
86         "farallon",
87         "cabletron",
88         "dayna",
89         "interlan",
90         "kinetics",
91 };
92
93 static int word16[] = {
94         1, /* apple */
95         1, /* asante */
96         1, /* farallon */
97         1, /* cabletron */
98         0, /* dayna */
99         1, /* interlan */
100         0, /* kinetics */
101 };
102
103 /* on which cards do we use NuBus resources? */
104 static int useresources[] = {
105         1, /* apple */
106         1, /* asante */
107         1, /* farallon */
108         0, /* cabletron */
109         0, /* dayna */
110         0, /* interlan */
111         0, /* kinetics */
112 };
113
114 enum mac8390_access {
115         ACCESS_UNKNOWN = 0,
116         ACCESS_32,
117         ACCESS_16,
118 };
119
120 extern enum mac8390_type mac8390_ident(struct nubus_dev * dev);
121 extern int mac8390_memsize(unsigned long membase);
122 extern int mac8390_memtest(struct net_device * dev);
123 static int mac8390_initdev(struct net_device * dev, struct nubus_dev * ndev,
124                            enum mac8390_type type);
125
126 static int mac8390_open(struct net_device * dev);
127 static int mac8390_close(struct net_device * dev);
128 static void mac8390_no_reset(struct net_device *dev);
129 static void interlan_reset(struct net_device *dev);
130
131 /* Sane (32-bit chunk memory read/write) - Some Farallon and Apple do this*/
132 static void sane_get_8390_hdr(struct net_device *dev,
133                               struct e8390_pkt_hdr *hdr, int ring_page);
134 static void sane_block_input(struct net_device * dev, int count,
135                              struct sk_buff * skb, int ring_offset);
136 static void sane_block_output(struct net_device * dev, int count,
137                               const unsigned char * buf, const int start_page);
138
139 /* dayna_memcpy to and from card */
140 static void dayna_memcpy_fromcard(struct net_device *dev, void *to,
141                                 int from, int count);
142 static void dayna_memcpy_tocard(struct net_device *dev, int to,
143                               const void *from, int count);
144
145 /* Dayna - Dayna/Kinetics use this */
146 static void dayna_get_8390_hdr(struct net_device *dev,
147                                struct e8390_pkt_hdr *hdr, int ring_page);
148 static void dayna_block_input(struct net_device *dev, int count,
149                               struct sk_buff *skb, int ring_offset);
150 static void dayna_block_output(struct net_device *dev, int count,
151                                const unsigned char *buf, int start_page);
152
153 #define memcpy_fromio(a,b,c)    memcpy((a),(void *)(b),(c))
154 #define memcpy_toio(a,b,c)      memcpy((void *)(a),(b),(c))
155
156 /* Slow Sane (16-bit chunk memory read/write) Cabletron uses this */
157 static void slow_sane_get_8390_hdr(struct net_device *dev,
158                                    struct e8390_pkt_hdr *hdr, int ring_page);
159 static void slow_sane_block_input(struct net_device *dev, int count,
160                                   struct sk_buff *skb, int ring_offset);
161 static void slow_sane_block_output(struct net_device *dev, int count,
162                                    const unsigned char *buf, int start_page);
163 static void word_memcpy_tocard(void *tp, const void *fp, int count);
164 static void word_memcpy_fromcard(void *tp, const void *fp, int count);
165
166 enum mac8390_type __init mac8390_ident(struct nubus_dev * dev)
167 {
168         switch (dev->dr_sw) {
169                 case NUBUS_DRSW_3COM:
170                         switch (dev->dr_hw) {
171                                 case NUBUS_DRHW_APPLE_SONIC_NB:
172                                 case NUBUS_DRHW_APPLE_SONIC_LC:
173                                 case NUBUS_DRHW_SONNET:
174                                         return MAC8390_NONE;
175                                         break;
176                                 default:
177                                         return MAC8390_APPLE;
178                                         break;
179                         }
180                         break;
181
182                 case NUBUS_DRSW_APPLE:
183                         switch (dev->dr_hw) {
184                                 case NUBUS_DRHW_ASANTE_LC:
185                                         return MAC8390_NONE;
186                                         break;
187                                 case NUBUS_DRHW_CABLETRON:
188                                         return MAC8390_CABLETRON;
189                                         break;
190                                 default:
191                                         return MAC8390_APPLE;
192                                         break;
193                         }
194                         break;
195
196                 case NUBUS_DRSW_ASANTE:
197                         return MAC8390_ASANTE;
198                         break;
199
200                 case NUBUS_DRSW_TECHWORKS:
201                 case NUBUS_DRSW_DAYNA2:
202                 case NUBUS_DRSW_DAYNA_LC:
203                         if (dev->dr_hw == NUBUS_DRHW_CABLETRON)
204                                 return MAC8390_CABLETRON;
205                         else
206                                 return MAC8390_APPLE;
207                         break;
208
209                 case NUBUS_DRSW_FARALLON:
210                         return MAC8390_FARALLON;
211                         break;
212
213                 case NUBUS_DRSW_KINETICS:
214                         switch (dev->dr_hw) {
215                                 case NUBUS_DRHW_INTERLAN:
216                                         return MAC8390_INTERLAN;
217                                         break;
218                                 default:
219                                         return MAC8390_KINETICS;
220                                         break;
221                         }
222                         break;
223
224                 case NUBUS_DRSW_DAYNA:
225                         // These correspond to Dayna Sonic cards
226                         // which use the macsonic driver
227                         if (dev->dr_hw == NUBUS_DRHW_SMC9194 ||
228                                 dev->dr_hw == NUBUS_DRHW_INTERLAN )
229                                 return MAC8390_NONE;
230                         else
231                                 return MAC8390_DAYNA;
232                         break;
233         }
234         return MAC8390_NONE;
235 }
236
237 enum mac8390_access __init mac8390_testio(volatile unsigned long membase)
238 {
239         unsigned long outdata = 0xA5A0B5B0;
240         unsigned long indata =  0x00000000;
241         /* Try writing 32 bits */
242         memcpy((char *)membase, (char *)&outdata, 4);
243         /* Now compare them */
244         if (memcmp((char *)&outdata, (char *)membase, 4) == 0)
245                 return ACCESS_32;
246         /* Write 16 bit output */
247         word_memcpy_tocard((char *)membase, (char *)&outdata, 4);
248         /* Now read it back */
249         word_memcpy_fromcard((char *)&indata, (char *)membase, 4);
250         if (outdata == indata)
251                 return ACCESS_16;
252         return ACCESS_UNKNOWN;
253 }
254
255 int __init mac8390_memsize(unsigned long membase)
256 {
257         unsigned long flags;
258         int i, j;
259
260         local_irq_save(flags);
261         /* Check up to 32K in 4K increments */
262         for (i = 0; i < 8; i++) {
263                 volatile unsigned short *m = (unsigned short *) (membase + (i * 0x1000));
264
265                 /* Unwriteable - we have a fully decoded card and the
266                    RAM end located */
267                 if (hwreg_present(m) == 0)
268                         break;
269
270                 /* write a distinctive byte */
271                 *m = 0xA5A0 | i;
272                 /* check that we read back what we wrote */
273                 if (*m != (0xA5A0 | i))
274                         break;
275
276                 /* check for partial decode and wrap */
277                 for (j = 0; j < i; j++) {
278                         volatile unsigned short *p = (unsigned short *) (membase + (j * 0x1000));
279                         if (*p != (0xA5A0 | j))
280                                 break;
281                 }
282         }
283         local_irq_restore(flags);
284         /* in any case, we stopped once we tried one block too many,
285            or once we reached 32K */
286         return i * 0x1000;
287 }
288
289 struct net_device * __init mac8390_probe(int unit)
290 {
291         struct net_device *dev;
292         volatile unsigned short *i;
293         int version_disp = 0;
294         struct nubus_dev * ndev = NULL;
295         int err = -ENODEV;
296
297         struct nubus_dir dir;
298         struct nubus_dirent ent;
299         int offset;
300         static unsigned int slots;
301
302         enum mac8390_type cardtype;
303
304         /* probably should check for Nubus instead */
305
306         if (!MACH_IS_MAC)
307                 return ERR_PTR(-ENODEV);
308
309         dev = ____alloc_ei_netdev(0);
310         if (!dev)
311                 return ERR_PTR(-ENOMEM);
312
313         if (unit >= 0)
314                 sprintf(dev->name, "eth%d", unit);
315
316         while ((ndev = nubus_find_type(NUBUS_CAT_NETWORK, NUBUS_TYPE_ETHERNET, ndev))) {
317                 /* Have we seen it already? */
318                 if (slots & (1<<ndev->board->slot))
319                         continue;
320                 slots |= 1<<ndev->board->slot;
321
322                 if ((cardtype = mac8390_ident(ndev)) == MAC8390_NONE)
323                         continue;
324
325                 if (version_disp == 0) {
326                         version_disp = 1;
327                         printk(version);
328                 }
329
330                 dev->irq = SLOT2IRQ(ndev->board->slot);
331                 /* This is getting to be a habit */
332                 dev->base_addr = ndev->board->slot_addr | ((ndev->board->slot&0xf) << 20);
333
334                 /* Get some Nubus info - we will trust the card's idea
335                    of where its memory and registers are. */
336
337                 if (nubus_get_func_dir(ndev, &dir) == -1) {
338                         printk(KERN_ERR "%s: Unable to get Nubus functional"
339                                         " directory for slot %X!\n",
340                                dev->name, ndev->board->slot);
341                         continue;
342                 }
343
344                 /* Get the MAC address */
345                 if ((nubus_find_rsrc(&dir, NUBUS_RESID_MAC_ADDRESS, &ent)) == -1) {
346                         printk(KERN_INFO "%s: Couldn't get MAC address!\n",
347                                         dev->name);
348                         continue;
349                 } else {
350                         nubus_get_rsrc_mem(dev->dev_addr, &ent, 6);
351                 }
352
353                 if (useresources[cardtype] == 1) {
354                         nubus_rewinddir(&dir);
355                         if (nubus_find_rsrc(&dir, NUBUS_RESID_MINOR_BASEOS, &ent) == -1) {
356                                 printk(KERN_ERR "%s: Memory offset resource"
357                                                 " for slot %X not found!\n",
358                                        dev->name, ndev->board->slot);
359                                 continue;
360                         }
361                         nubus_get_rsrc_mem(&offset, &ent, 4);
362                         dev->mem_start = dev->base_addr + offset;
363                         /* yes, this is how the Apple driver does it */
364                         dev->base_addr = dev->mem_start + 0x10000;
365                         nubus_rewinddir(&dir);
366                         if (nubus_find_rsrc(&dir, NUBUS_RESID_MINOR_LENGTH, &ent) == -1) {
367                                 printk(KERN_INFO "%s: Memory length resource"
368                                                  " for slot %X not found"
369                                                  ", probing\n",
370                                        dev->name, ndev->board->slot);
371                                 offset = mac8390_memsize(dev->mem_start);
372                                 } else {
373                                         nubus_get_rsrc_mem(&offset, &ent, 4);
374                                 }
375                         dev->mem_end = dev->mem_start + offset;
376                 } else {
377                         switch (cardtype) {
378                                 case MAC8390_KINETICS:
379                                 case MAC8390_DAYNA: /* it's the same */
380                                         dev->base_addr =
381                                                 (int)(ndev->board->slot_addr +
382                                                 DAYNA_8390_BASE);
383                                         dev->mem_start =
384                                                 (int)(ndev->board->slot_addr +
385                                                 DAYNA_8390_MEM);
386                                         dev->mem_end =
387                                                 dev->mem_start +
388                                                 mac8390_memsize(dev->mem_start);
389                                         break;
390                                 case MAC8390_INTERLAN:
391                                         dev->base_addr =
392                                                 (int)(ndev->board->slot_addr +
393                                                 INTERLAN_8390_BASE);
394                                         dev->mem_start =
395                                                 (int)(ndev->board->slot_addr +
396                                                 INTERLAN_8390_MEM);
397                                         dev->mem_end =
398                                                 dev->mem_start +
399                                                 mac8390_memsize(dev->mem_start);
400                                         break;
401                                 case MAC8390_CABLETRON:
402                                         dev->base_addr =
403                                                 (int)(ndev->board->slot_addr +
404                                                 CABLETRON_8390_BASE);
405                                         dev->mem_start =
406                                                 (int)(ndev->board->slot_addr +
407                                                 CABLETRON_8390_MEM);
408                                         /* The base address is unreadable if 0x00
409                                          * has been written to the command register
410                                          * Reset the chip by writing E8390_NODMA +
411                                          *   E8390_PAGE0 + E8390_STOP just to be
412                                          *   sure
413                                          */
414                                         i = (void *)dev->base_addr;
415                                         *i = 0x21;
416                                         dev->mem_end =
417                                                 dev->mem_start +
418                                                 mac8390_memsize(dev->mem_start);
419                                         break;
420
421                                 default:
422                                         printk(KERN_ERR "Card type %s is"
423                                                " unsupported, sorry\n",
424                                                ndev->board->name);
425                                         continue;
426                         }
427                 }
428
429                 /* Do the nasty 8390 stuff */
430                 if (!mac8390_initdev(dev, ndev, cardtype))
431                         break;
432         }
433
434         if (!ndev)
435                 goto out;
436         err = register_netdev(dev);
437         if (err)
438                 goto out;
439         return dev;
440
441 out:
442         free_netdev(dev);
443         return ERR_PTR(err);
444 }
445
446 #ifdef MODULE
447 MODULE_AUTHOR("David Huggins-Daines <dhd@debian.org> and others");
448 MODULE_DESCRIPTION("Macintosh NS8390-based Nubus Ethernet driver");
449 MODULE_LICENSE("GPL");
450
451 /* overkill, of course */
452 static struct net_device *dev_mac8390[15];
453 int init_module(void)
454 {
455         int i;
456         for (i = 0; i < 15; i++) {
457                 struct net_device *dev = mac8390_probe(-1);
458                 if (IS_ERR(dev))
459                         break;
460                 dev_mac890[i] = dev;
461         }
462         if (!i) {
463                 printk(KERN_NOTICE "mac8390.c: No useable cards found, driver NOT installed.\n");
464                 return -ENODEV;
465         }
466         return 0;
467 }
468
469 void cleanup_module(void)
470 {
471         int i;
472         for (i = 0; i < 15; i++) {
473                 struct net_device *dev = dev_mac890[i];
474                 if (dev) {
475                         unregister_netdev(dev);
476                         free_netdev(dev);
477                 }
478         }
479 }
480
481 #endif /* MODULE */
482
483 static int __init mac8390_initdev(struct net_device * dev, struct nubus_dev * ndev,
484                             enum mac8390_type type)
485 {
486         static u32 fwrd4_offsets[16]={
487                 0,      4,      8,      12,
488                 16,     20,     24,     28,
489                 32,     36,     40,     44,
490                 48,     52,     56,     60
491         };
492         static u32 back4_offsets[16]={
493                 60,     56,     52,     48,
494                 44,     40,     36,     32,
495                 28,     24,     20,     16,
496                 12,     8,      4,      0
497         };
498         static u32 fwrd2_offsets[16]={
499                 0,      2,      4,      6,
500                 8,     10,     12,     14,
501                 16,    18,     20,     22,
502                 24,    26,     28,     30
503         };
504
505         int access_bitmode = 0;
506
507         /* Now fill in our stuff */
508         dev->open = &mac8390_open;
509         dev->stop = &mac8390_close;
510 #ifdef CONFIG_NET_POLL_CONTROLLER
511         dev->poll_controller = __ei_poll;
512 #endif
513
514         /* GAR, ei_status is actually a macro even though it looks global */
515         ei_status.name = cardname[type];
516         ei_status.word16 = word16[type];
517
518         /* Cabletron's TX/RX buffers are backwards */
519         if (type == MAC8390_CABLETRON) {
520                ei_status.tx_start_page = CABLETRON_TX_START_PG;
521                ei_status.rx_start_page = CABLETRON_RX_START_PG;
522                ei_status.stop_page = CABLETRON_RX_STOP_PG;
523                ei_status.rmem_start = dev->mem_start;
524                ei_status.rmem_end = dev->mem_start + CABLETRON_RX_STOP_PG*256;
525         } else {
526                ei_status.tx_start_page = WD_START_PG;
527                ei_status.rx_start_page = WD_START_PG + TX_PAGES;
528                ei_status.stop_page = (dev->mem_end - dev->mem_start)/256;
529                ei_status.rmem_start = dev->mem_start + TX_PAGES*256;
530                ei_status.rmem_end = dev->mem_end;
531         }
532
533         /* Fill in model-specific information and functions */
534         switch(type) {
535         case MAC8390_FARALLON:
536         case MAC8390_APPLE:
537                 switch(mac8390_testio(dev->mem_start)) {
538                         case ACCESS_UNKNOWN:
539                                 printk("Don't know how to access card memory!\n");
540                                 return -ENODEV;
541                                 break;
542
543                         case ACCESS_16:
544                                 /* 16 bit card, register map is reversed */
545                                 ei_status.reset_8390 = &mac8390_no_reset;
546                                 ei_status.block_input = &slow_sane_block_input;
547                                 ei_status.block_output = &slow_sane_block_output;
548                                 ei_status.get_8390_hdr = &slow_sane_get_8390_hdr;
549                                 ei_status.reg_offset = back4_offsets;
550                                 break;
551
552                         case ACCESS_32:
553                                 /* 32 bit card, register map is reversed */
554                                 ei_status.reset_8390 = &mac8390_no_reset;
555                                 ei_status.block_input = &sane_block_input;
556                                 ei_status.block_output = &sane_block_output;
557                                 ei_status.get_8390_hdr = &sane_get_8390_hdr;
558                                 ei_status.reg_offset = back4_offsets;
559                                 access_bitmode = 1;
560                                 break;
561                 }
562                 break;
563
564         case MAC8390_ASANTE:
565                 /* Some Asante cards pass the 32 bit test
566                  * but overwrite system memory when run at 32 bit.
567                  * so we run them all at 16 bit.
568                  */
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 = back4_offsets;
574                 break;
575
576         case MAC8390_CABLETRON:
577                 /* 16 bit card, register map is short forward */
578                 ei_status.reset_8390 = &mac8390_no_reset;
579                 ei_status.block_input = &slow_sane_block_input;
580                 ei_status.block_output = &slow_sane_block_output;
581                 ei_status.get_8390_hdr = &slow_sane_get_8390_hdr;
582                 ei_status.reg_offset = fwrd2_offsets;
583                 break;
584
585         case MAC8390_DAYNA:
586         case MAC8390_KINETICS:
587                 /* 16 bit memory, register map is forward */
588                 /* dayna and similar */
589                 ei_status.reset_8390 = &mac8390_no_reset;
590                 ei_status.block_input = &dayna_block_input;
591                 ei_status.block_output = &dayna_block_output;
592                 ei_status.get_8390_hdr = &dayna_get_8390_hdr;
593                 ei_status.reg_offset = fwrd4_offsets;
594                 break;
595
596         case MAC8390_INTERLAN:
597                 /* 16 bit memory, register map is forward */
598                 ei_status.reset_8390 = &interlan_reset;
599                 ei_status.block_input = &slow_sane_block_input;
600                 ei_status.block_output = &slow_sane_block_output;
601                 ei_status.get_8390_hdr = &slow_sane_get_8390_hdr;
602                 ei_status.reg_offset = fwrd4_offsets;
603                 break;
604
605         default:
606                 printk(KERN_ERR "Card type %s is unsupported, sorry\n", ndev->board->name);
607                 return -ENODEV;
608         }
609
610         __NS8390_init(dev, 0);
611
612         /* Good, done, now spit out some messages */
613         printk(KERN_INFO "%s: %s in slot %X (type %s)\n",
614                    dev->name, ndev->board->name, ndev->board->slot, cardname[type]);
615         printk(KERN_INFO "MAC ");
616         {
617                 int i;
618                 for (i = 0; i < 6; i++) {
619                         printk("%2.2x", dev->dev_addr[i]);
620                         if (i < 5)
621                                 printk(":");
622                 }
623         }
624         printk(" IRQ %d, %d KB shared memory at %#lx,  %d-bit access.\n",
625                    dev->irq, (int)((dev->mem_end - dev->mem_start)/0x1000) * 4,
626                    dev->mem_start, access_bitmode?32:16);
627         return 0;
628 }
629
630 static int mac8390_open(struct net_device *dev)
631 {
632         __ei_open(dev);
633         if (request_irq(dev->irq, __ei_interrupt, 0, "8390 Ethernet", dev)) {
634                 printk ("%s: unable to get IRQ %d.\n", dev->name, dev->irq);
635                 return -EAGAIN;
636         }
637         return 0;
638 }
639
640 static int mac8390_close(struct net_device *dev)
641 {
642         free_irq(dev->irq, dev);
643         __ei_close(dev);
644         return 0;
645 }
646
647 static void mac8390_no_reset(struct net_device *dev)
648 {
649         ei_status.txing = 0;
650         if (ei_debug > 1)
651                 printk("reset not supported\n");
652         return;
653 }
654
655 static void interlan_reset(struct net_device *dev)
656 {
657         unsigned char *target=nubus_slot_addr(IRQ2SLOT(dev->irq));
658         if (ei_debug > 1)
659                 printk("Need to reset the NS8390 t=%lu...", jiffies);
660         ei_status.txing = 0;
661         target[0xC0000] = 0;
662         if (ei_debug > 1)
663                 printk("reset complete\n");
664         return;
665 }
666
667 /* dayna_memcpy_fromio/dayna_memcpy_toio */
668 /* directly from daynaport.c by Alan Cox */
669 static void dayna_memcpy_fromcard(struct net_device *dev, void *to, int from, int count)
670 {
671         volatile unsigned char *ptr;
672         unsigned char *target=to;
673         from<<=1;       /* word, skip overhead */
674         ptr=(unsigned char *)(dev->mem_start+from);
675         /* Leading byte? */
676         if (from&2) {
677                 *target++ = ptr[-1];
678                 ptr += 2;
679                 count--;
680         }
681         while(count>=2)
682         {
683                 *(unsigned short *)target = *(unsigned short volatile *)ptr;
684                 ptr += 4;                       /* skip cruft */
685                 target += 2;
686                 count-=2;
687         }
688         /* Trailing byte? */
689         if(count)
690                 *target = *ptr;
691 }
692
693 static void dayna_memcpy_tocard(struct net_device *dev, int to, const void *from, int count)
694 {
695         volatile unsigned short *ptr;
696         const unsigned char *src=from;
697         to<<=1; /* word, skip overhead */
698         ptr=(unsigned short *)(dev->mem_start+to);
699         /* Leading byte? */
700         if (to&2) { /* avoid a byte write (stomps on other data) */
701                 ptr[-1] = (ptr[-1]&0xFF00)|*src++;
702                 ptr++;
703                 count--;
704         }
705         while(count>=2)
706         {
707                 *ptr++=*(unsigned short *)src;          /* Copy and */
708                 ptr++;                  /* skip cruft */
709                 src += 2;
710                 count-=2;
711         }
712         /* Trailing byte? */
713         if(count)
714         {
715                 /* card doesn't like byte writes */
716                 *ptr=(*ptr&0x00FF)|(*src << 8);
717         }
718 }
719
720 /* sane block input/output */
721 static void sane_get_8390_hdr(struct net_device *dev,
722                               struct e8390_pkt_hdr *hdr, int ring_page)
723 {
724         unsigned long hdr_start = (ring_page - WD_START_PG)<<8;
725         memcpy_fromio((void *)hdr, (char *)dev->mem_start + hdr_start, 4);
726         /* Fix endianness */
727         hdr->count = swab16(hdr->count);
728 }
729
730 static void sane_block_input(struct net_device *dev, int count,
731                              struct sk_buff *skb, int ring_offset)
732 {
733         unsigned long xfer_base = ring_offset - (WD_START_PG<<8);
734         unsigned long xfer_start = xfer_base + dev->mem_start;
735
736         if (xfer_start + count > ei_status.rmem_end) {
737                 /* We must wrap the input move. */
738                 int semi_count = ei_status.rmem_end - xfer_start;
739                 memcpy_fromio(skb->data, (char *)dev->mem_start + xfer_base, semi_count);
740                 count -= semi_count;
741                 memcpy_toio(skb->data + semi_count, (char *)ei_status.rmem_start, count);
742         } else {
743                 memcpy_fromio(skb->data, (char *)dev->mem_start + xfer_base, count);
744         }
745 }
746
747 static void sane_block_output(struct net_device *dev, int count,
748                               const unsigned char *buf, int start_page)
749 {
750         long shmem = (start_page - WD_START_PG)<<8;
751
752         memcpy_toio((char *)dev->mem_start + shmem, buf, count);
753 }
754
755 /* dayna block input/output */
756 static void dayna_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page)
757 {
758         unsigned long hdr_start = (ring_page - WD_START_PG)<<8;
759
760         dayna_memcpy_fromcard(dev, (void *)hdr, hdr_start, 4);
761         /* Fix endianness */
762         hdr->count=(hdr->count&0xFF)<<8|(hdr->count>>8);
763 }
764
765 static void dayna_block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset)
766 {
767         unsigned long xfer_base = ring_offset - (WD_START_PG<<8);
768         unsigned long xfer_start = xfer_base+dev->mem_start;
769
770         /* Note the offset math is done in card memory space which is word
771            per long onto our space. */
772
773         if (xfer_start + count > ei_status.rmem_end)
774         {
775                 /* We must wrap the input move. */
776                 int semi_count = ei_status.rmem_end - xfer_start;
777                 dayna_memcpy_fromcard(dev, skb->data, xfer_base, semi_count);
778                 count -= semi_count;
779                 dayna_memcpy_fromcard(dev, skb->data + semi_count,
780                                       ei_status.rmem_start - dev->mem_start,
781                                       count);
782         }
783         else
784         {
785                 dayna_memcpy_fromcard(dev, skb->data, xfer_base, count);
786         }
787 }
788
789 static void dayna_block_output(struct net_device *dev, int count, const unsigned char *buf,
790                                 int start_page)
791 {
792         long shmem = (start_page - WD_START_PG)<<8;
793
794         dayna_memcpy_tocard(dev, shmem, buf, count);
795 }
796
797 /* Cabletron block I/O */
798 static void slow_sane_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr,
799         int ring_page)
800 {
801         unsigned long hdr_start = (ring_page - WD_START_PG)<<8;
802         word_memcpy_fromcard((void *)hdr, (char *)dev->mem_start+hdr_start, 4);
803         /* Register endianism - fix here rather than 8390.c */
804         hdr->count = (hdr->count&0xFF)<<8|(hdr->count>>8);
805 }
806
807 static void slow_sane_block_input(struct net_device *dev, int count, struct sk_buff *skb,
808         int ring_offset)
809 {
810         unsigned long xfer_base = ring_offset - (WD_START_PG<<8);
811         unsigned long xfer_start = xfer_base+dev->mem_start;
812
813         if (xfer_start + count > ei_status.rmem_end)
814         {
815                 /* We must wrap the input move. */
816                 int semi_count = ei_status.rmem_end - xfer_start;
817                 word_memcpy_fromcard(skb->data, (char *)dev->mem_start +
818                         xfer_base, semi_count);
819                 count -= semi_count;
820                 word_memcpy_fromcard(skb->data + semi_count,
821                                      (char *)ei_status.rmem_start, count);
822         }
823         else
824         {
825                 word_memcpy_fromcard(skb->data, (char *)dev->mem_start +
826                         xfer_base, count);
827         }
828 }
829
830 static void slow_sane_block_output(struct net_device *dev, int count, const unsigned char *buf,
831         int start_page)
832 {
833         long shmem = (start_page - WD_START_PG)<<8;
834
835         word_memcpy_tocard((char *)dev->mem_start + shmem, buf, count);
836 }
837
838 static void word_memcpy_tocard(void *tp, const void *fp, int count)
839 {
840         volatile unsigned short *to = tp;
841         const unsigned short *from = fp;
842
843         count++;
844         count/=2;
845
846         while(count--)
847                 *to++=*from++;
848 }
849
850 static void word_memcpy_fromcard(void *tp, const void *fp, int count)
851 {
852         unsigned short *to = tp;
853         const volatile unsigned short *from = fp;
854
855         count++;
856         count/=2;
857
858         while(count--)
859                 *to++=*from++;
860 }
861
862