blob: 3a25d191ea4af322ae851edd38f5128afb40cd88 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * madgemc.c: Driver for the Madge Smart 16/4 MC16 MCA token ring card.
3 *
4 * Written 2000 by Adam Fritzler
5 *
6 * This software may be used and distributed according to the terms
7 * of the GNU General Public License, incorporated herein by reference.
8 *
9 * This driver module supports the following cards:
10 * - Madge Smart 16/4 Ringnode MC16
11 * - Madge Smart 16/4 Ringnode MC32 (??)
12 *
13 * Maintainer(s):
14 * AF Adam Fritzler mid@auk.cx
15 *
16 * Modification History:
17 * 16-Jan-00 AF Created
18 *
19 */
20static const char version[] = "madgemc.c: v0.91 23/01/2000 by Adam Fritzler\n";
21
22#include <linux/module.h>
Jochen Friedrich84c3ea02005-08-19 21:05:56 -040023#include <linux/mca.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070024#include <linux/kernel.h>
25#include <linux/errno.h>
26#include <linux/pci.h>
27#include <linux/init.h>
28#include <linux/netdevice.h>
29#include <linux/trdevice.h>
30
31#include <asm/system.h>
32#include <asm/io.h>
33#include <asm/irq.h>
34
35#include "tms380tr.h"
36#include "madgemc.h" /* Madge-specific constants */
37
38#define MADGEMC_IO_EXTENT 32
39#define MADGEMC_SIF_OFFSET 0x08
40
Jochen Friedrich84c3ea02005-08-19 21:05:56 -040041struct card_info {
Linus Torvalds1da177e2005-04-16 15:20:36 -070042 /*
43 * These are read from the BIA ROM.
44 */
45 unsigned int manid;
46 unsigned int cardtype;
47 unsigned int cardrev;
48 unsigned int ramsize;
49
50 /*
51 * These are read from the MCA POS registers.
52 */
53 unsigned int burstmode:2;
54 unsigned int fairness:1; /* 0 = Fair, 1 = Unfair */
55 unsigned int arblevel:4;
56 unsigned int ringspeed:2; /* 0 = 4mb, 1 = 16, 2 = Auto/none */
57 unsigned int cabletype:1; /* 0 = RJ45, 1 = DB9 */
Linus Torvalds1da177e2005-04-16 15:20:36 -070058};
Linus Torvalds1da177e2005-04-16 15:20:36 -070059
60static int madgemc_open(struct net_device *dev);
61static int madgemc_close(struct net_device *dev);
62static int madgemc_chipset_init(struct net_device *dev);
Jochen Friedrich84c3ea02005-08-19 21:05:56 -040063static void madgemc_read_rom(struct net_device *dev, struct card_info *card);
Linus Torvalds1da177e2005-04-16 15:20:36 -070064static unsigned short madgemc_setnselout_pins(struct net_device *dev);
65static void madgemc_setcabletype(struct net_device *dev, int type);
66
67static int madgemc_mcaproc(char *buf, int slot, void *d);
68
69static void madgemc_setregpage(struct net_device *dev, int page);
70static void madgemc_setsifsel(struct net_device *dev, int val);
71static void madgemc_setint(struct net_device *dev, int val);
72
73static irqreturn_t madgemc_interrupt(int irq, void *dev_id, struct pt_regs *regs);
74
75/*
76 * These work around paging, however they don't guarentee you're on the
77 * right page.
78 */
79#define SIFREADB(reg) (inb(dev->base_addr + ((reg<0x8)?reg:reg-0x8)))
80#define SIFWRITEB(val, reg) (outb(val, dev->base_addr + ((reg<0x8)?reg:reg-0x8)))
81#define SIFREADW(reg) (inw(dev->base_addr + ((reg<0x8)?reg:reg-0x8)))
82#define SIFWRITEW(val, reg) (outw(val, dev->base_addr + ((reg<0x8)?reg:reg-0x8)))
83
84/*
85 * Read a byte-length value from the register.
86 */
87static unsigned short madgemc_sifreadb(struct net_device *dev, unsigned short reg)
88{
89 unsigned short ret;
90 if (reg<0x8)
91 ret = SIFREADB(reg);
92 else {
93 madgemc_setregpage(dev, 1);
94 ret = SIFREADB(reg);
95 madgemc_setregpage(dev, 0);
96 }
97 return ret;
98}
99
100/*
101 * Write a byte-length value to a register.
102 */
103static void madgemc_sifwriteb(struct net_device *dev, unsigned short val, unsigned short reg)
104{
105 if (reg<0x8)
106 SIFWRITEB(val, reg);
107 else {
108 madgemc_setregpage(dev, 1);
109 SIFWRITEB(val, reg);
110 madgemc_setregpage(dev, 0);
111 }
112 return;
113}
114
115/*
116 * Read a word-length value from a register
117 */
118static unsigned short madgemc_sifreadw(struct net_device *dev, unsigned short reg)
119{
120 unsigned short ret;
121 if (reg<0x8)
122 ret = SIFREADW(reg);
123 else {
124 madgemc_setregpage(dev, 1);
125 ret = SIFREADW(reg);
126 madgemc_setregpage(dev, 0);
127 }
128 return ret;
129}
130
131/*
132 * Write a word-length value to a register.
133 */
134static void madgemc_sifwritew(struct net_device *dev, unsigned short val, unsigned short reg)
135{
136 if (reg<0x8)
137 SIFWRITEW(val, reg);
138 else {
139 madgemc_setregpage(dev, 1);
140 SIFWRITEW(val, reg);
141 madgemc_setregpage(dev, 0);
142 }
143 return;
144}
145
146
147
Jochen Friedrich84c3ea02005-08-19 21:05:56 -0400148static int __devinit madgemc_probe(struct device *device)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700149{
150 static int versionprinted;
151 struct net_device *dev;
152 struct net_local *tp;
Jochen Friedrich84c3ea02005-08-19 21:05:56 -0400153 struct card_info *card;
154 struct mca_device *mdev = to_mca_device(device);
155 int ret = 0, i = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700156
Jochen Friedrich84c3ea02005-08-19 21:05:56 -0400157 if (versionprinted++ == 0)
158 printk("%s", version);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700159
Jochen Friedrich84c3ea02005-08-19 21:05:56 -0400160 if(mca_device_claimed(mdev))
161 return -EBUSY;
162 mca_device_set_claim(mdev, 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700163
Jochen Friedrich84c3ea02005-08-19 21:05:56 -0400164 dev = alloc_trdev(sizeof(struct net_local));
165 if (!dev) {
166 printk("madgemc: unable to allocate dev space\n");
167 mca_device_set_claim(mdev, 0);
168 ret = -ENOMEM;
169 goto getout;
170 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700171
Jochen Friedrich84c3ea02005-08-19 21:05:56 -0400172 SET_MODULE_OWNER(dev);
173 dev->dma = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700174
Jochen Friedrich84c3ea02005-08-19 21:05:56 -0400175 card = kmalloc(sizeof(struct card_info), GFP_KERNEL);
176 if (card==NULL) {
177 printk("madgemc: unable to allocate card struct\n");
178 ret = -ENOMEM;
179 goto getout1;
180 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700181
Jochen Friedrich84c3ea02005-08-19 21:05:56 -0400182 /*
183 * Parse configuration information. This all comes
184 * directly from the publicly available @002d.ADF.
185 * Get it from Madge or your local ADF library.
186 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700187
Jochen Friedrich84c3ea02005-08-19 21:05:56 -0400188 /*
189 * Base address
190 */
191 dev->base_addr = 0x0a20 +
192 ((mdev->pos[2] & MC16_POS2_ADDR2)?0x0400:0) +
193 ((mdev->pos[0] & MC16_POS0_ADDR1)?0x1000:0) +
194 ((mdev->pos[3] & MC16_POS3_ADDR3)?0x2000:0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700195
Jochen Friedrich84c3ea02005-08-19 21:05:56 -0400196 /*
197 * Interrupt line
198 */
199 switch(mdev->pos[0] >> 6) { /* upper two bits */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700200 case 0x1: dev->irq = 3; break;
201 case 0x2: dev->irq = 9; break; /* IRQ 2 = IRQ 9 */
202 case 0x3: dev->irq = 10; break;
203 default: dev->irq = 0; break;
Jochen Friedrich84c3ea02005-08-19 21:05:56 -0400204 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700205
Jochen Friedrich84c3ea02005-08-19 21:05:56 -0400206 if (dev->irq == 0) {
207 printk("%s: invalid IRQ\n", dev->name);
208 ret = -EBUSY;
209 goto getout2;
210 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700211
Jochen Friedrich84c3ea02005-08-19 21:05:56 -0400212 if (!request_region(dev->base_addr, MADGEMC_IO_EXTENT,
213 "madgemc")) {
214 printk(KERN_INFO "madgemc: unable to setup Smart MC in slot %d because of I/O base conflict at 0x%04lx\n", mdev->slot, dev->base_addr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700215 dev->base_addr += MADGEMC_SIF_OFFSET;
Jochen Friedrich84c3ea02005-08-19 21:05:56 -0400216 ret = -EBUSY;
217 goto getout2;
218 }
219 dev->base_addr += MADGEMC_SIF_OFFSET;
220
221 /*
222 * Arbitration Level
223 */
224 card->arblevel = ((mdev->pos[0] >> 1) & 0x7) + 8;
225
226 /*
227 * Burst mode and Fairness
228 */
229 card->burstmode = ((mdev->pos[2] >> 6) & 0x3);
230 card->fairness = ((mdev->pos[2] >> 4) & 0x1);
231
232 /*
233 * Ring Speed
234 */
235 if ((mdev->pos[1] >> 2)&0x1)
236 card->ringspeed = 2; /* not selected */
237 else if ((mdev->pos[2] >> 5) & 0x1)
238 card->ringspeed = 1; /* 16Mb */
239 else
240 card->ringspeed = 0; /* 4Mb */
241
242 /*
243 * Cable type
244 */
245 if ((mdev->pos[1] >> 6)&0x1)
246 card->cabletype = 1; /* STP/DB9 */
247 else
248 card->cabletype = 0; /* UTP/RJ-45 */
249
250
251 /*
252 * ROM Info. This requires us to actually twiddle
253 * bits on the card, so we must ensure above that
254 * the base address is free of conflict (request_region above).
255 */
256 madgemc_read_rom(dev, card);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700257
Jochen Friedrich84c3ea02005-08-19 21:05:56 -0400258 if (card->manid != 0x4d) { /* something went wrong */
259 printk(KERN_INFO "%s: Madge MC ROM read failed (unknown manufacturer ID %02x)\n", dev->name, card->manid);
260 goto getout3;
261 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700262
Jochen Friedrich84c3ea02005-08-19 21:05:56 -0400263 if ((card->cardtype != 0x08) && (card->cardtype != 0x0d)) {
264 printk(KERN_INFO "%s: Madge MC ROM read failed (unknown card ID %02x)\n", dev->name, card->cardtype);
265 ret = -EIO;
266 goto getout3;
267 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700268
Jochen Friedrich84c3ea02005-08-19 21:05:56 -0400269 /* All cards except Rev 0 and 1 MC16's have 256kb of RAM */
270 if ((card->cardtype == 0x08) && (card->cardrev <= 0x01))
271 card->ramsize = 128;
272 else
273 card->ramsize = 256;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700274
Jochen Friedrich84c3ea02005-08-19 21:05:56 -0400275 printk("%s: %s Rev %d at 0x%04lx IRQ %d\n",
276 dev->name,
277 (card->cardtype == 0x08)?MADGEMC16_CARDNAME:
278 MADGEMC32_CARDNAME, card->cardrev,
279 dev->base_addr, dev->irq);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700280
Jochen Friedrich84c3ea02005-08-19 21:05:56 -0400281 if (card->cardtype == 0x0d)
282 printk("%s: Warning: MC32 support is experimental and highly untested\n", dev->name);
283
284 if (card->ringspeed==2) { /* Unknown */
285 printk("%s: Warning: Ring speed not set in POS -- Please run the reference disk and set it!\n", dev->name);
286 card->ringspeed = 1; /* default to 16mb */
287 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700288
Jochen Friedrich84c3ea02005-08-19 21:05:56 -0400289 printk("%s: RAM Size: %dKB\n", dev->name, card->ramsize);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700290
Jochen Friedrich84c3ea02005-08-19 21:05:56 -0400291 printk("%s: Ring Speed: %dMb/sec on %s\n", dev->name,
292 (card->ringspeed)?16:4,
293 card->cabletype?"STP/DB9":"UTP/RJ-45");
294 printk("%s: Arbitration Level: %d\n", dev->name,
295 card->arblevel);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700296
Jochen Friedrich84c3ea02005-08-19 21:05:56 -0400297 printk("%s: Burst Mode: ", dev->name);
298 switch(card->burstmode) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700299 case 0: printk("Cycle steal"); break;
300 case 1: printk("Limited burst"); break;
301 case 2: printk("Delayed release"); break;
302 case 3: printk("Immediate release"); break;
Jochen Friedrich84c3ea02005-08-19 21:05:56 -0400303 }
304 printk(" (%s)\n", (card->fairness)?"Unfair":"Fair");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700305
306
Jochen Friedrich84c3ea02005-08-19 21:05:56 -0400307 /*
308 * Enable SIF before we assign the interrupt handler,
309 * just in case we get spurious interrupts that need
310 * handling.
311 */
312 outb(0, dev->base_addr + MC_CONTROL_REG0); /* sanity */
313 madgemc_setsifsel(dev, 1);
314 if (request_irq(dev->irq, madgemc_interrupt, SA_SHIRQ,
315 "madgemc", dev)) {
316 ret = -EBUSY;
317 goto getout3;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700318 }
319
Jochen Friedrich84c3ea02005-08-19 21:05:56 -0400320 madgemc_chipset_init(dev); /* enables interrupts! */
321 madgemc_setcabletype(dev, card->cabletype);
322
323 /* Setup MCA structures */
324 mca_device_set_name(mdev, (card->cardtype == 0x08)?MADGEMC16_CARDNAME:MADGEMC32_CARDNAME);
325 mca_set_adapter_procfn(mdev->slot, madgemc_mcaproc, dev);
326
327 printk("%s: Ring Station Address: ", dev->name);
328 printk("%2.2x", dev->dev_addr[0]);
329 for (i = 1; i < 6; i++)
330 printk(":%2.2x", dev->dev_addr[i]);
331 printk("\n");
332
333 if (tmsdev_init(dev, device)) {
334 printk("%s: unable to get memory for dev->priv.\n",
335 dev->name);
336 ret = -ENOMEM;
337 goto getout4;
338 }
339 tp = netdev_priv(dev);
340
341 /*
342 * The MC16 is physically a 32bit card. However, Madge
343 * insists on calling it 16bit, so I'll assume here that
344 * they know what they're talking about. Cut off DMA
345 * at 16mb.
346 */
347 tp->setnselout = madgemc_setnselout_pins;
348 tp->sifwriteb = madgemc_sifwriteb;
349 tp->sifreadb = madgemc_sifreadb;
350 tp->sifwritew = madgemc_sifwritew;
351 tp->sifreadw = madgemc_sifreadw;
352 tp->DataRate = (card->ringspeed)?SPEED_16:SPEED_4;
353
354 memcpy(tp->ProductID, "Madge MCA 16/4 ", PROD_ID_SIZE + 1);
355
356 dev->open = madgemc_open;
357 dev->stop = madgemc_close;
358
359 tp->tmspriv = card;
360 dev_set_drvdata(device, dev);
361
362 if (register_netdev(dev) == 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700363 return 0;
Jochen Friedrich84c3ea02005-08-19 21:05:56 -0400364
365 dev_set_drvdata(device, NULL);
366 ret = -ENOMEM;
367getout4:
368 free_irq(dev->irq, dev);
369getout3:
370 release_region(dev->base_addr-MADGEMC_SIF_OFFSET,
371 MADGEMC_IO_EXTENT);
372getout2:
373 kfree(card);
374getout1:
375 free_netdev(dev);
376getout:
377 mca_device_set_claim(mdev, 0);
378 return ret;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700379}
380
381/*
382 * Handle interrupts generated by the card
383 *
384 * The MicroChannel Madge cards need slightly more handling
385 * after an interrupt than other TMS380 cards do.
386 *
387 * First we must make sure it was this card that generated the
388 * interrupt (since interrupt sharing is allowed). Then,
389 * because we're using level-triggered interrupts (as is
390 * standard on MCA), we must toggle the interrupt line
391 * on the card in order to claim and acknowledge the interrupt.
392 * Once that is done, the interrupt should be handlable in
393 * the normal tms380tr_interrupt() routine.
394 *
395 * There's two ways we can check to see if the interrupt is ours,
396 * both with their own disadvantages...
397 *
398 * 1) Read in the SIFSTS register from the TMS controller. This
399 * is guarenteed to be accurate, however, there's a fairly
400 * large performance penalty for doing so: the Madge chips
401 * must request the register from the Eagle, the Eagle must
402 * read them from its internal bus, and then take the route
403 * back out again, for a 16bit read.
404 *
405 * 2) Use the MC_CONTROL_REG0_SINTR bit from the Madge ASICs.
406 * The major disadvantage here is that the accuracy of the
407 * bit is in question. However, it cuts out the extra read
408 * cycles it takes to read the Eagle's SIF, as its only an
409 * 8bit read, and theoretically the Madge bit is directly
410 * connected to the interrupt latch coming out of the Eagle
411 * hardware (that statement is not verified).
412 *
413 * I can't determine which of these methods has the best win. For now,
414 * we make a compromise. Use the Madge way for the first interrupt,
415 * which should be the fast-path, and then once we hit the first
416 * interrupt, keep on trying using the SIF method until we've
417 * exhausted all contiguous interrupts.
418 *
419 */
420static irqreturn_t madgemc_interrupt(int irq, void *dev_id, struct pt_regs *regs)
421{
422 int pending,reg1;
423 struct net_device *dev;
424
425 if (!dev_id) {
426 printk("madgemc_interrupt: was not passed a dev_id!\n");
427 return IRQ_NONE;
428 }
429
430 dev = (struct net_device *)dev_id;
431
432 /* Make sure its really us. -- the Madge way */
433 pending = inb(dev->base_addr + MC_CONTROL_REG0);
434 if (!(pending & MC_CONTROL_REG0_SINTR))
435 return IRQ_NONE; /* not our interrupt */
436
437 /*
438 * Since we're level-triggered, we may miss the rising edge
439 * of the next interrupt while we're off handling this one,
440 * so keep checking until the SIF verifies that it has nothing
441 * left for us to do.
442 */
443 pending = STS_SYSTEM_IRQ;
444 do {
445 if (pending & STS_SYSTEM_IRQ) {
446
447 /* Toggle the interrupt to reset the latch on card */
448 reg1 = inb(dev->base_addr + MC_CONTROL_REG1);
449 outb(reg1 ^ MC_CONTROL_REG1_SINTEN,
450 dev->base_addr + MC_CONTROL_REG1);
451 outb(reg1, dev->base_addr + MC_CONTROL_REG1);
452
453 /* Continue handling as normal */
454 tms380tr_interrupt(irq, dev_id, regs);
455
456 pending = SIFREADW(SIFSTS); /* restart - the SIF way */
457
458 } else
459 return IRQ_HANDLED;
460 } while (1);
461
462 return IRQ_HANDLED; /* not reachable */
463}
464
465/*
466 * Set the card to the prefered ring speed.
467 *
468 * Unlike newer cards, the MC16/32 have their speed selection
469 * circuit connected to the Madge ASICs and not to the TMS380
470 * NSELOUT pins. Set the ASIC bits correctly here, and return
471 * zero to leave the TMS NSELOUT bits unaffected.
472 *
473 */
474unsigned short madgemc_setnselout_pins(struct net_device *dev)
475{
476 unsigned char reg1;
477 struct net_local *tp = netdev_priv(dev);
478
479 reg1 = inb(dev->base_addr + MC_CONTROL_REG1);
480
481 if(tp->DataRate == SPEED_16)
482 reg1 |= MC_CONTROL_REG1_SPEED_SEL; /* add for 16mb */
483 else if (reg1 & MC_CONTROL_REG1_SPEED_SEL)
484 reg1 ^= MC_CONTROL_REG1_SPEED_SEL; /* remove for 4mb */
485 outb(reg1, dev->base_addr + MC_CONTROL_REG1);
486
487 return 0; /* no change */
488}
489
490/*
491 * Set the register page. This equates to the SRSX line
492 * on the TMS380Cx6.
493 *
494 * Register selection is normally done via three contiguous
495 * bits. However, some boards (such as the MC16/32) use only
496 * two bits, plus a separate bit in the glue chip. This
497 * sets the SRSX bit (the top bit). See page 4-17 in the
498 * Yellow Book for which registers are affected.
499 *
500 */
501static void madgemc_setregpage(struct net_device *dev, int page)
502{
503 static int reg1;
504
505 reg1 = inb(dev->base_addr + MC_CONTROL_REG1);
506 if ((page == 0) && (reg1 & MC_CONTROL_REG1_SRSX)) {
507 outb(reg1 ^ MC_CONTROL_REG1_SRSX,
508 dev->base_addr + MC_CONTROL_REG1);
509 }
510 else if (page == 1) {
511 outb(reg1 | MC_CONTROL_REG1_SRSX,
512 dev->base_addr + MC_CONTROL_REG1);
513 }
514 reg1 = inb(dev->base_addr + MC_CONTROL_REG1);
515
516 return;
517}
518
519/*
520 * The SIF registers are not mapped into register space by default
521 * Set this to 1 to map them, 0 to map the BIA ROM.
522 *
523 */
524static void madgemc_setsifsel(struct net_device *dev, int val)
525{
526 unsigned int reg0;
527
528 reg0 = inb(dev->base_addr + MC_CONTROL_REG0);
529 if ((val == 0) && (reg0 & MC_CONTROL_REG0_SIFSEL)) {
530 outb(reg0 ^ MC_CONTROL_REG0_SIFSEL,
531 dev->base_addr + MC_CONTROL_REG0);
532 } else if (val == 1) {
533 outb(reg0 | MC_CONTROL_REG0_SIFSEL,
534 dev->base_addr + MC_CONTROL_REG0);
535 }
536 reg0 = inb(dev->base_addr + MC_CONTROL_REG0);
537
538 return;
539}
540
541/*
542 * Enable SIF interrupts
543 *
544 * This does not enable interrupts in the SIF, but rather
545 * enables SIF interrupts to be passed onto the host.
546 *
547 */
548static void madgemc_setint(struct net_device *dev, int val)
549{
550 unsigned int reg1;
551
552 reg1 = inb(dev->base_addr + MC_CONTROL_REG1);
553 if ((val == 0) && (reg1 & MC_CONTROL_REG1_SINTEN)) {
554 outb(reg1 ^ MC_CONTROL_REG1_SINTEN,
555 dev->base_addr + MC_CONTROL_REG1);
556 } else if (val == 1) {
557 outb(reg1 | MC_CONTROL_REG1_SINTEN,
558 dev->base_addr + MC_CONTROL_REG1);
559 }
560
561 return;
562}
563
564/*
565 * Cable type is set via control register 7. Bit zero high
566 * for UTP, low for STP.
567 */
568static void madgemc_setcabletype(struct net_device *dev, int type)
569{
570 outb((type==0)?MC_CONTROL_REG7_CABLEUTP:MC_CONTROL_REG7_CABLESTP,
571 dev->base_addr + MC_CONTROL_REG7);
572}
573
574/*
575 * Enable the functions of the Madge chipset needed for
576 * full working order.
577 */
578static int madgemc_chipset_init(struct net_device *dev)
579{
580 outb(0, dev->base_addr + MC_CONTROL_REG1); /* pull SRESET low */
581 tms380tr_wait(100); /* wait for card to reset */
582
583 /* bring back into normal operating mode */
584 outb(MC_CONTROL_REG1_NSRESET, dev->base_addr + MC_CONTROL_REG1);
585
586 /* map SIF registers */
587 madgemc_setsifsel(dev, 1);
588
589 /* enable SIF interrupts */
590 madgemc_setint(dev, 1);
591
592 return 0;
593}
594
595/*
596 * Disable the board, and put back into power-up state.
597 */
Adrian Bunkde70b4c2005-05-02 03:46:43 +0200598static void madgemc_chipset_close(struct net_device *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700599{
600 /* disable interrupts */
601 madgemc_setint(dev, 0);
602 /* unmap SIF registers */
603 madgemc_setsifsel(dev, 0);
604
605 return;
606}
607
608/*
609 * Read the card type (MC16 or MC32) from the card.
610 *
611 * The configuration registers are stored in two separate
612 * pages. Pages are flipped by clearing bit 3 of CONTROL_REG0 (PAGE)
613 * for page zero, or setting bit 3 for page one.
614 *
615 * Page zero contains the following data:
616 * Byte 0: Manufacturer ID (0x4D -- ASCII "M")
617 * Byte 1: Card type:
618 * 0x08 for MC16
619 * 0x0D for MC32
620 * Byte 2: Card revision
621 * Byte 3: Mirror of POS config register 0
622 * Byte 4: Mirror of POS 1
623 * Byte 5: Mirror of POS 2
624 *
625 * Page one contains the following data:
626 * Byte 0: Unused
627 * Byte 1-6: BIA, MSB to LSB.
628 *
629 * Note that to read the BIA, we must unmap the SIF registers
630 * by clearing bit 2 of CONTROL_REG0 (SIFSEL), as the data
631 * will reside in the same logical location. For this reason,
632 * _never_ read the BIA while the Eagle processor is running!
633 * The SIF will be completely inaccessible until the BIA operation
634 * is complete.
635 *
636 */
Jochen Friedrich84c3ea02005-08-19 21:05:56 -0400637static void madgemc_read_rom(struct net_device *dev, struct card_info *card)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700638{
639 unsigned long ioaddr;
640 unsigned char reg0, reg1, tmpreg0, i;
641
Jochen Friedrich84c3ea02005-08-19 21:05:56 -0400642 ioaddr = dev->base_addr;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700643
644 reg0 = inb(ioaddr + MC_CONTROL_REG0);
645 reg1 = inb(ioaddr + MC_CONTROL_REG1);
646
647 /* Switch to page zero and unmap SIF */
648 tmpreg0 = reg0 & ~(MC_CONTROL_REG0_PAGE + MC_CONTROL_REG0_SIFSEL);
649 outb(tmpreg0, ioaddr + MC_CONTROL_REG0);
650
651 card->manid = inb(ioaddr + MC_ROM_MANUFACTURERID);
652 card->cardtype = inb(ioaddr + MC_ROM_ADAPTERID);
653 card->cardrev = inb(ioaddr + MC_ROM_REVISION);
654
655 /* Switch to rom page one */
656 outb(tmpreg0 | MC_CONTROL_REG0_PAGE, ioaddr + MC_CONTROL_REG0);
657
658 /* Read BIA */
Jochen Friedrich84c3ea02005-08-19 21:05:56 -0400659 dev->addr_len = 6;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700660 for (i = 0; i < 6; i++)
Jochen Friedrich84c3ea02005-08-19 21:05:56 -0400661 dev->dev_addr[i] = inb(ioaddr + MC_ROM_BIA_START + i);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700662
663 /* Restore original register values */
664 outb(reg0, ioaddr + MC_CONTROL_REG0);
665 outb(reg1, ioaddr + MC_CONTROL_REG1);
666
667 return;
668}
669
670static int madgemc_open(struct net_device *dev)
671{
672 /*
673 * Go ahead and reinitialize the chipset again, just to
674 * make sure we didn't get left in a bad state.
675 */
676 madgemc_chipset_init(dev);
677 tms380tr_open(dev);
678 return 0;
679}
680
681static int madgemc_close(struct net_device *dev)
682{
683 tms380tr_close(dev);
684 madgemc_chipset_close(dev);
685 return 0;
686}
687
688/*
689 * Give some details available from /proc/mca/slotX
690 */
691static int madgemc_mcaproc(char *buf, int slot, void *d)
692{
693 struct net_device *dev = (struct net_device *)d;
Jochen Friedrich84c3ea02005-08-19 21:05:56 -0400694 struct net_local *tp = dev->priv;
695 struct card_info *curcard = tp->tmspriv;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700696 int len = 0;
697
Linus Torvalds1da177e2005-04-16 15:20:36 -0700698 len += sprintf(buf+len, "-------\n");
699 if (curcard) {
700 struct net_local *tp = netdev_priv(dev);
701 int i;
702
703 len += sprintf(buf+len, "Card Revision: %d\n", curcard->cardrev);
704 len += sprintf(buf+len, "RAM Size: %dkb\n", curcard->ramsize);
705 len += sprintf(buf+len, "Cable type: %s\n", (curcard->cabletype)?"STP/DB9":"UTP/RJ-45");
706 len += sprintf(buf+len, "Configured ring speed: %dMb/sec\n", (curcard->ringspeed)?16:4);
707 len += sprintf(buf+len, "Running ring speed: %dMb/sec\n", (tp->DataRate==SPEED_16)?16:4);
708 len += sprintf(buf+len, "Device: %s\n", dev->name);
709 len += sprintf(buf+len, "IO Port: 0x%04lx\n", dev->base_addr);
710 len += sprintf(buf+len, "IRQ: %d\n", dev->irq);
711 len += sprintf(buf+len, "Arbitration Level: %d\n", curcard->arblevel);
712 len += sprintf(buf+len, "Burst Mode: ");
713 switch(curcard->burstmode) {
714 case 0: len += sprintf(buf+len, "Cycle steal"); break;
715 case 1: len += sprintf(buf+len, "Limited burst"); break;
716 case 2: len += sprintf(buf+len, "Delayed release"); break;
717 case 3: len += sprintf(buf+len, "Immediate release"); break;
718 }
719 len += sprintf(buf+len, " (%s)\n", (curcard->fairness)?"Unfair":"Fair");
720
721 len += sprintf(buf+len, "Ring Station Address: ");
722 len += sprintf(buf+len, "%2.2x", dev->dev_addr[0]);
723 for (i = 1; i < 6; i++)
724 len += sprintf(buf+len, " %2.2x", dev->dev_addr[i]);
725 len += sprintf(buf+len, "\n");
726 } else
727 len += sprintf(buf+len, "Card not configured\n");
728
729 return len;
730}
731
Jochen Friedrich84c3ea02005-08-19 21:05:56 -0400732static int __devexit madgemc_remove(struct device *device)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700733{
Jochen Friedrich84c3ea02005-08-19 21:05:56 -0400734 struct net_device *dev = dev_get_drvdata(device);
735 struct net_local *tp;
736 struct card_info *card;
737
738 if (!dev)
739 BUG();
740
741 tp = dev->priv;
742 card = tp->tmspriv;
743 kfree(card);
744 tp->tmspriv = NULL;
745
746 unregister_netdev(dev);
747 release_region(dev->base_addr-MADGEMC_SIF_OFFSET, MADGEMC_IO_EXTENT);
748 free_irq(dev->irq, dev);
749 tmsdev_term(dev);
750 free_netdev(dev);
751 dev_set_drvdata(device, NULL);
752
753 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700754}
755
Jochen Friedrich84c3ea02005-08-19 21:05:56 -0400756static short madgemc_adapter_ids[] __initdata = {
757 0x002d,
758 0x0000
759};
760
761static struct mca_driver madgemc_driver = {
762 .id_table = madgemc_adapter_ids,
763 .driver = {
764 .name = "madgemc",
765 .bus = &mca_bus_type,
766 .probe = madgemc_probe,
767 .remove = __devexit_p(madgemc_remove),
768 },
769};
770
771static int __init madgemc_init (void)
772{
773 return mca_register_driver (&madgemc_driver);
774}
775
776static void __exit madgemc_exit (void)
777{
778 mca_unregister_driver (&madgemc_driver);
779}
780
781module_init(madgemc_init);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700782module_exit(madgemc_exit);
783
784MODULE_LICENSE("GPL");
785