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Commit | Line | Data |
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2d0cfb52 PG |
1 | /* |
2 | * SGI IOC3 master driver and IRQ demuxer | |
3 | * | |
4 | * Copyright (c) 2005 Stanislaw Skowronek <skylark@linux-mips.org> | |
5 | * Heavily based on similar work by: | |
6 | * Brent Casavant <bcasavan@sgi.com> - IOC4 master driver | |
7 | * Pat Gefre <pfg@sgi.com> - IOC3 serial port IRQ demuxer | |
8 | */ | |
9 | ||
10 | #include <linux/config.h> | |
11 | #include <linux/errno.h> | |
12 | #include <linux/module.h> | |
13 | #include <linux/pci.h> | |
56b146d3 | 14 | #include <linux/dma-mapping.h> |
2d0cfb52 PG |
15 | #include <linux/interrupt.h> |
16 | #include <linux/spinlock.h> | |
17 | #include <linux/delay.h> | |
18 | #include <linux/ioc3.h> | |
19 | #include <linux/rwsem.h> | |
20 | ||
21 | #define IOC3_PCI_SIZE 0x100000 | |
22 | ||
23 | static LIST_HEAD(ioc3_devices); | |
24 | static int ioc3_counter; | |
25 | static DECLARE_RWSEM(ioc3_devices_rwsem); | |
26 | ||
27 | static struct ioc3_submodule *ioc3_submodules[IOC3_MAX_SUBMODULES]; | |
28 | static struct ioc3_submodule *ioc3_ethernet; | |
29 | static rwlock_t ioc3_submodules_lock = RW_LOCK_UNLOCKED; | |
30 | ||
31 | /* NIC probing code */ | |
32 | ||
33 | #define GPCR_MLAN_EN 0x00200000 /* enable MCR to pin 8 */ | |
34 | ||
35 | static inline unsigned mcr_pack(unsigned pulse, unsigned sample) | |
36 | { | |
37 | return (pulse << 10) | (sample << 2); | |
38 | } | |
39 | ||
40 | static int nic_wait(struct ioc3_driver_data *idd) | |
41 | { | |
d6561010 | 42 | unsigned mcr; |
2d0cfb52 PG |
43 | |
44 | do { | |
d6561010 | 45 | mcr = readl(&idd->vma->mcr); |
2d0cfb52 PG |
46 | } while (!(mcr & 2)); |
47 | ||
48 | return mcr & 1; | |
49 | } | |
50 | ||
51 | static int nic_reset(struct ioc3_driver_data *idd) | |
52 | { | |
53 | int presence; | |
54 | unsigned long flags; | |
55 | ||
56 | local_irq_save(flags); | |
d6561010 | 57 | writel(mcr_pack(500, 65), &idd->vma->mcr); |
2d0cfb52 PG |
58 | presence = nic_wait(idd); |
59 | local_irq_restore(flags); | |
60 | ||
61 | udelay(500); | |
62 | ||
63 | return presence; | |
64 | } | |
65 | ||
15b370c9 | 66 | static int nic_read_bit(struct ioc3_driver_data *idd) |
2d0cfb52 PG |
67 | { |
68 | int result; | |
69 | unsigned long flags; | |
70 | ||
71 | local_irq_save(flags); | |
d6561010 | 72 | writel(mcr_pack(6, 13), &idd->vma->mcr); |
2d0cfb52 PG |
73 | result = nic_wait(idd); |
74 | local_irq_restore(flags); | |
75 | ||
76 | udelay(500); | |
77 | ||
78 | return result; | |
79 | } | |
80 | ||
15b370c9 | 81 | static void nic_write_bit(struct ioc3_driver_data *idd, int bit) |
2d0cfb52 PG |
82 | { |
83 | if (bit) | |
d6561010 | 84 | writel(mcr_pack(6, 110), &idd->vma->mcr); |
2d0cfb52 | 85 | else |
d6561010 | 86 | writel(mcr_pack(80, 30), &idd->vma->mcr); |
2d0cfb52 PG |
87 | |
88 | nic_wait(idd); | |
89 | } | |
90 | ||
91 | static unsigned nic_read_byte(struct ioc3_driver_data *idd) | |
92 | { | |
93 | unsigned result = 0; | |
94 | int i; | |
95 | ||
96 | for (i = 0; i < 8; i++) | |
97 | result = (result >> 1) | (nic_read_bit(idd) << 7); | |
98 | ||
99 | return result; | |
100 | } | |
101 | ||
102 | static void nic_write_byte(struct ioc3_driver_data *idd, int byte) | |
103 | { | |
104 | int i, bit; | |
105 | ||
106 | for (i = 8; i; i--) { | |
107 | bit = byte & 1; | |
108 | byte >>= 1; | |
109 | ||
110 | nic_write_bit(idd, bit); | |
111 | } | |
112 | } | |
113 | ||
114 | static unsigned long | |
115 | nic_find(struct ioc3_driver_data *idd, int *last, unsigned long addr) | |
116 | { | |
117 | int a, b, index, disc; | |
118 | ||
119 | nic_reset(idd); | |
120 | ||
121 | /* Search ROM. */ | |
122 | nic_write_byte(idd, 0xF0); | |
123 | ||
124 | /* Algorithm from ``Book of iButton Standards''. */ | |
125 | for (index = 0, disc = 0; index < 64; index++) { | |
126 | a = nic_read_bit(idd); | |
127 | b = nic_read_bit(idd); | |
128 | ||
129 | if (a && b) { | |
130 | printk(KERN_WARNING "IOC3 NIC search failed.\n"); | |
131 | *last = 0; | |
132 | return 0; | |
133 | } | |
134 | ||
135 | if (!a && !b) { | |
136 | if (index == *last) { | |
137 | addr |= 1UL << index; | |
138 | } else if (index > *last) { | |
139 | addr &= ~(1UL << index); | |
140 | disc = index; | |
141 | } else if ((addr & (1UL << index)) == 0) | |
142 | disc = index; | |
143 | nic_write_bit(idd, (addr>>index)&1); | |
144 | continue; | |
145 | } else { | |
146 | if (a) | |
147 | addr |= 1UL << index; | |
148 | else | |
149 | addr &= ~(1UL << index); | |
150 | nic_write_bit(idd, a); | |
151 | continue; | |
152 | } | |
153 | } | |
154 | *last = disc; | |
155 | return addr; | |
156 | } | |
157 | ||
158 | static void nic_addr(struct ioc3_driver_data *idd, unsigned long addr) | |
159 | { | |
160 | int index; | |
161 | ||
162 | nic_reset(idd); | |
163 | nic_write_byte(idd, 0xF0); | |
164 | for (index = 0; index < 64; index++) { | |
165 | nic_read_bit(idd); | |
166 | nic_read_bit(idd); | |
167 | nic_write_bit(idd, (addr>>index)&1); | |
168 | } | |
169 | } | |
170 | ||
171 | static void crc16_byte(unsigned int *crc, unsigned char db) | |
172 | { | |
173 | int i; | |
174 | ||
175 | for(i=0;i<8;i++) { | |
176 | *crc <<= 1; | |
177 | if((db^(*crc>>16)) & 1) | |
178 | *crc ^= 0x8005; | |
179 | db >>= 1; | |
180 | } | |
181 | *crc &= 0xFFFF; | |
182 | } | |
183 | ||
184 | static unsigned int crc16_area(unsigned char *dbs, int size, unsigned int crc) | |
185 | { | |
186 | while(size--) | |
187 | crc16_byte(&crc, *(dbs++)); | |
188 | return crc; | |
189 | } | |
190 | ||
191 | static void crc8_byte(unsigned int *crc, unsigned char db) | |
192 | { | |
193 | int i,f; | |
194 | ||
195 | for(i=0;i<8;i++) { | |
196 | f = (*crc ^ db) & 1; | |
197 | *crc >>= 1; | |
198 | db >>= 1; | |
199 | if(f) | |
200 | *crc ^= 0x8c; | |
201 | } | |
202 | *crc &= 0xff; | |
203 | } | |
204 | ||
205 | static unsigned int crc8_addr(unsigned long addr) | |
206 | { | |
207 | int i; | |
208 | unsigned int crc = 0x00; | |
209 | ||
210 | for(i=0;i<8;i++) | |
211 | crc8_byte(&crc, addr>>(i<<3)); | |
212 | return crc; | |
213 | } | |
214 | ||
215 | static void | |
216 | read_redir_page(struct ioc3_driver_data *idd, unsigned long addr, int page, | |
217 | unsigned char *redir, unsigned char *data) | |
218 | { | |
219 | int loops = 16, i; | |
220 | ||
221 | while(redir[page] != 0xFF) { | |
222 | page = redir[page]^0xFF; | |
223 | loops--; | |
224 | if(loops<0) { | |
225 | printk(KERN_ERR "IOC3: NIC circular redirection\n"); | |
226 | return; | |
227 | } | |
228 | } | |
229 | loops = 3; | |
230 | while(loops>0) { | |
231 | nic_addr(idd, addr); | |
232 | nic_write_byte(idd, 0xF0); | |
233 | nic_write_byte(idd, (page << 5) & 0xE0); | |
234 | nic_write_byte(idd, (page >> 3) & 0x1F); | |
235 | for(i=0;i<0x20;i++) | |
236 | data[i] = nic_read_byte(idd); | |
237 | if(crc16_area(data, 0x20, 0x0000) == 0x800d) | |
238 | return; | |
239 | loops--; | |
240 | } | |
241 | printk(KERN_ERR "IOC3: CRC error in data page\n"); | |
242 | for(i=0;i<0x20;i++) | |
243 | data[i] = 0x00; | |
244 | } | |
245 | ||
246 | static void | |
247 | read_redir_map(struct ioc3_driver_data *idd, unsigned long addr, | |
248 | unsigned char *redir) | |
249 | { | |
250 | int i,j,loops = 3,crc_ok; | |
251 | unsigned int crc; | |
252 | ||
253 | while(loops>0) { | |
254 | crc_ok = 1; | |
255 | nic_addr(idd, addr); | |
256 | nic_write_byte(idd, 0xAA); | |
257 | nic_write_byte(idd, 0x00); | |
258 | nic_write_byte(idd, 0x01); | |
259 | for(i=0;i<64;i+=8) { | |
260 | for(j=0;j<8;j++) | |
261 | redir[i+j] = nic_read_byte(idd); | |
262 | crc = crc16_area(redir+i, 8, (i==0)?0x8707:0x0000); | |
263 | crc16_byte(&crc, nic_read_byte(idd)); | |
264 | crc16_byte(&crc, nic_read_byte(idd)); | |
265 | if(crc != 0x800d) | |
266 | crc_ok = 0; | |
267 | } | |
268 | if(crc_ok) | |
269 | return; | |
270 | loops--; | |
271 | } | |
272 | printk(KERN_ERR "IOC3: CRC error in redirection page\n"); | |
273 | for(i=0;i<64;i++) | |
274 | redir[i] = 0xFF; | |
275 | } | |
276 | ||
277 | static void read_nic(struct ioc3_driver_data *idd, unsigned long addr) | |
278 | { | |
279 | unsigned char redir[64]; | |
280 | unsigned char data[64],part[32]; | |
281 | int i,j; | |
282 | ||
283 | /* read redirections */ | |
284 | read_redir_map(idd, addr, redir); | |
285 | /* read data pages */ | |
286 | read_redir_page(idd, addr, 0, redir, data); | |
287 | read_redir_page(idd, addr, 1, redir, data+32); | |
288 | /* assemble the part # */ | |
289 | j=0; | |
290 | for(i=0;i<19;i++) | |
291 | if(data[i+11] != ' ') | |
292 | part[j++] = data[i+11]; | |
293 | for(i=0;i<6;i++) | |
294 | if(data[i+32] != ' ') | |
295 | part[j++] = data[i+32]; | |
296 | part[j] = 0; | |
297 | /* skip Octane power supplies */ | |
298 | if(!strncmp(part, "060-0035-", 9)) | |
299 | return; | |
300 | if(!strncmp(part, "060-0038-", 9)) | |
301 | return; | |
302 | strcpy(idd->nic_part, part); | |
303 | /* assemble the serial # */ | |
304 | j=0; | |
305 | for(i=0;i<10;i++) | |
306 | if(data[i+1] != ' ') | |
307 | idd->nic_serial[j++] = data[i+1]; | |
308 | idd->nic_serial[j] = 0; | |
309 | } | |
310 | ||
311 | static void read_mac(struct ioc3_driver_data *idd, unsigned long addr) | |
312 | { | |
313 | int i, loops = 3; | |
314 | unsigned char data[13]; | |
315 | ||
316 | while(loops>0) { | |
317 | nic_addr(idd, addr); | |
318 | nic_write_byte(idd, 0xF0); | |
319 | nic_write_byte(idd, 0x00); | |
320 | nic_write_byte(idd, 0x00); | |
321 | nic_read_byte(idd); | |
322 | for(i=0;i<13;i++) | |
323 | data[i] = nic_read_byte(idd); | |
324 | if(crc16_area(data, 13, 0x0000) == 0x800d) { | |
325 | for(i=10;i>4;i--) | |
326 | idd->nic_mac[10-i] = data[i]; | |
327 | return; | |
328 | } | |
329 | loops--; | |
330 | } | |
331 | printk(KERN_ERR "IOC3: CRC error in MAC address\n"); | |
332 | for(i=0;i<6;i++) | |
333 | idd->nic_mac[i] = 0x00; | |
334 | } | |
335 | ||
336 | static void probe_nic(struct ioc3_driver_data *idd) | |
337 | { | |
338 | int save = 0, loops = 3; | |
339 | unsigned long first, addr; | |
340 | ||
d6561010 | 341 | writel(GPCR_MLAN_EN, &idd->vma->gpcr_s); |
2d0cfb52 PG |
342 | |
343 | while(loops>0) { | |
344 | idd->nic_part[0] = 0; | |
345 | idd->nic_serial[0] = 0; | |
346 | addr = first = nic_find(idd, &save, 0); | |
347 | if(!first) | |
348 | return; | |
349 | while(1) { | |
350 | if(crc8_addr(addr)) | |
351 | break; | |
352 | else { | |
353 | switch(addr & 0xFF) { | |
354 | case 0x0B: | |
355 | read_nic(idd, addr); | |
356 | break; | |
357 | case 0x09: | |
358 | case 0x89: | |
359 | case 0x91: | |
360 | read_mac(idd, addr); | |
361 | break; | |
362 | } | |
363 | } | |
364 | addr = nic_find(idd, &save, addr); | |
365 | if(addr == first) | |
366 | return; | |
367 | } | |
368 | loops--; | |
369 | } | |
370 | printk(KERN_ERR "IOC3: CRC error in NIC address\n"); | |
371 | } | |
372 | ||
373 | /* Interrupts */ | |
374 | ||
15b370c9 | 375 | static void write_ireg(struct ioc3_driver_data *idd, uint32_t val, int which) |
2d0cfb52 PG |
376 | { |
377 | unsigned long flags; | |
378 | ||
379 | spin_lock_irqsave(&idd->ir_lock, flags); | |
380 | switch (which) { | |
381 | case IOC3_W_IES: | |
382 | writel(val, &idd->vma->sio_ies); | |
383 | break; | |
384 | case IOC3_W_IEC: | |
385 | writel(val, &idd->vma->sio_iec); | |
386 | break; | |
387 | } | |
388 | spin_unlock_irqrestore(&idd->ir_lock, flags); | |
389 | } | |
390 | static inline uint32_t get_pending_intrs(struct ioc3_driver_data *idd) | |
391 | { | |
392 | unsigned long flag; | |
393 | uint32_t intrs = 0; | |
394 | ||
395 | spin_lock_irqsave(&idd->ir_lock, flag); | |
396 | intrs = readl(&idd->vma->sio_ir); | |
397 | intrs &= readl(&idd->vma->sio_ies); | |
398 | spin_unlock_irqrestore(&idd->ir_lock, flag); | |
399 | return intrs; | |
400 | } | |
401 | ||
402 | static irqreturn_t ioc3_intr_io(int irq, void *arg, struct pt_regs *regs) | |
403 | { | |
404 | unsigned long flags; | |
405 | struct ioc3_driver_data *idd = (struct ioc3_driver_data *)arg; | |
406 | int handled = 1, id; | |
407 | unsigned int pending; | |
408 | ||
409 | read_lock_irqsave(&ioc3_submodules_lock, flags); | |
410 | ||
d6561010 | 411 | if(idd->dual_irq && readb(&idd->vma->eisr)) { |
2d0cfb52 PG |
412 | /* send Ethernet IRQ to the driver */ |
413 | if(ioc3_ethernet && idd->active[ioc3_ethernet->id] && | |
414 | ioc3_ethernet->intr) { | |
415 | handled = handled && !ioc3_ethernet->intr(ioc3_ethernet, | |
416 | idd, 0, regs); | |
417 | } | |
418 | } | |
419 | pending = get_pending_intrs(idd); /* look at the IO IRQs */ | |
420 | ||
421 | for(id=0;id<IOC3_MAX_SUBMODULES;id++) { | |
422 | if(idd->active[id] && ioc3_submodules[id] | |
423 | && (pending & ioc3_submodules[id]->irq_mask) | |
424 | && ioc3_submodules[id]->intr) { | |
425 | write_ireg(idd, ioc3_submodules[id]->irq_mask, | |
426 | IOC3_W_IEC); | |
427 | if(!ioc3_submodules[id]->intr(ioc3_submodules[id], | |
428 | idd, pending & ioc3_submodules[id]->irq_mask, | |
429 | regs)) | |
430 | pending &= ~ioc3_submodules[id]->irq_mask; | |
431 | if (ioc3_submodules[id]->reset_mask) | |
432 | write_ireg(idd, ioc3_submodules[id]->irq_mask, | |
433 | IOC3_W_IES); | |
434 | } | |
435 | } | |
436 | read_unlock_irqrestore(&ioc3_submodules_lock, flags); | |
437 | if(pending) { | |
438 | printk(KERN_WARNING | |
439 | "IOC3: Pending IRQs 0x%08x discarded and disabled\n",pending); | |
440 | write_ireg(idd, pending, IOC3_W_IEC); | |
441 | handled = 1; | |
442 | } | |
443 | return handled?IRQ_HANDLED:IRQ_NONE; | |
444 | } | |
445 | ||
446 | static irqreturn_t ioc3_intr_eth(int irq, void *arg, struct pt_regs *regs) | |
447 | { | |
448 | unsigned long flags; | |
449 | struct ioc3_driver_data *idd = (struct ioc3_driver_data *)arg; | |
450 | int handled = 1; | |
451 | ||
452 | if(!idd->dual_irq) | |
453 | return IRQ_NONE; | |
454 | read_lock_irqsave(&ioc3_submodules_lock, flags); | |
455 | if(ioc3_ethernet && idd->active[ioc3_ethernet->id] | |
456 | && ioc3_ethernet->intr) | |
457 | handled = handled && !ioc3_ethernet->intr(ioc3_ethernet, idd, 0, | |
458 | regs); | |
459 | read_unlock_irqrestore(&ioc3_submodules_lock, flags); | |
460 | return handled?IRQ_HANDLED:IRQ_NONE; | |
461 | } | |
462 | ||
463 | void ioc3_enable(struct ioc3_submodule *is, | |
464 | struct ioc3_driver_data *idd, unsigned int irqs) | |
465 | { | |
466 | write_ireg(idd, irqs & is->irq_mask, IOC3_W_IES); | |
467 | } | |
468 | ||
469 | void ioc3_ack(struct ioc3_submodule *is, struct ioc3_driver_data *idd, | |
470 | unsigned int irqs) | |
471 | { | |
472 | writel(irqs & is->irq_mask, &idd->vma->sio_ir); | |
473 | } | |
474 | ||
475 | void ioc3_disable(struct ioc3_submodule *is, | |
476 | struct ioc3_driver_data *idd, unsigned int irqs) | |
477 | { | |
478 | write_ireg(idd, irqs & is->irq_mask, IOC3_W_IEC); | |
479 | } | |
480 | ||
481 | void ioc3_gpcr_set(struct ioc3_driver_data *idd, unsigned int val) | |
482 | { | |
483 | unsigned long flags; | |
484 | spin_lock_irqsave(&idd->gpio_lock, flags); | |
485 | writel(val, &idd->vma->gpcr_s); | |
486 | spin_unlock_irqrestore(&idd->gpio_lock, flags); | |
487 | } | |
488 | ||
489 | /* Keep it simple, stupid! */ | |
490 | static int find_slot(void **tab, int max) | |
491 | { | |
492 | int i; | |
493 | for(i=0;i<max;i++) | |
494 | if(!(tab[i])) | |
495 | return i; | |
496 | return -1; | |
497 | } | |
498 | ||
499 | /* Register an IOC3 submodule */ | |
500 | int ioc3_register_submodule(struct ioc3_submodule *is) | |
501 | { | |
502 | struct ioc3_driver_data *idd; | |
503 | int alloc_id; | |
504 | unsigned long flags; | |
505 | ||
506 | write_lock_irqsave(&ioc3_submodules_lock, flags); | |
507 | alloc_id = find_slot((void **)ioc3_submodules, IOC3_MAX_SUBMODULES); | |
508 | if(alloc_id != -1) { | |
509 | ioc3_submodules[alloc_id] = is; | |
510 | if(is->ethernet) { | |
511 | if(ioc3_ethernet==NULL) | |
512 | ioc3_ethernet=is; | |
513 | else | |
514 | printk(KERN_WARNING | |
515 | "IOC3 Ethernet module already registered!\n"); | |
516 | } | |
517 | } | |
518 | write_unlock_irqrestore(&ioc3_submodules_lock, flags); | |
519 | ||
520 | if(alloc_id == -1) { | |
521 | printk(KERN_WARNING "Increase IOC3_MAX_SUBMODULES!\n"); | |
522 | return -ENOMEM; | |
523 | } | |
524 | ||
525 | is->id=alloc_id; | |
526 | ||
527 | /* Initialize submodule for each IOC3 */ | |
528 | if (!is->probe) | |
529 | return 0; | |
530 | ||
531 | down_read(&ioc3_devices_rwsem); | |
532 | list_for_each_entry(idd, &ioc3_devices, list) { | |
533 | /* set to 1 for IRQs in probe */ | |
534 | idd->active[alloc_id] = 1; | |
535 | idd->active[alloc_id] = !is->probe(is, idd); | |
536 | } | |
537 | up_read(&ioc3_devices_rwsem); | |
538 | ||
539 | return 0; | |
540 | } | |
541 | ||
542 | /* Unregister an IOC3 submodule */ | |
543 | void ioc3_unregister_submodule(struct ioc3_submodule *is) | |
544 | { | |
545 | struct ioc3_driver_data *idd; | |
546 | unsigned long flags; | |
547 | ||
548 | write_lock_irqsave(&ioc3_submodules_lock, flags); | |
549 | if(ioc3_submodules[is->id]==is) | |
550 | ioc3_submodules[is->id]=NULL; | |
551 | else | |
552 | printk(KERN_WARNING | |
553 | "IOC3 submodule %s has wrong ID.\n",is->name); | |
554 | if(ioc3_ethernet==is) | |
555 | ioc3_ethernet = NULL; | |
556 | write_unlock_irqrestore(&ioc3_submodules_lock, flags); | |
557 | ||
558 | /* Remove submodule for each IOC3 */ | |
559 | down_read(&ioc3_devices_rwsem); | |
560 | list_for_each_entry(idd, &ioc3_devices, list) | |
561 | if(idd->active[is->id]) { | |
562 | if(is->remove) | |
563 | if(is->remove(is, idd)) | |
564 | printk(KERN_WARNING | |
565 | "%s: IOC3 submodule %s remove failed " | |
566 | "for pci_dev %s.\n", | |
567 | __FUNCTION__, module_name(is->owner), | |
568 | pci_name(idd->pdev)); | |
569 | idd->active[is->id] = 0; | |
570 | if(is->irq_mask) | |
571 | write_ireg(idd, is->irq_mask, IOC3_W_IEC); | |
572 | } | |
573 | up_read(&ioc3_devices_rwsem); | |
574 | } | |
575 | ||
576 | /********************* | |
577 | * Device management * | |
578 | *********************/ | |
579 | ||
580 | static char * | |
581 | ioc3_class_names[]={"unknown", "IP27 BaseIO", "IP30 system", "MENET 1/2/3", | |
582 | "MENET 4", "CADduo", "Altix Serial"}; | |
583 | ||
584 | static int ioc3_class(struct ioc3_driver_data *idd) | |
585 | { | |
586 | int res = IOC3_CLASS_NONE; | |
587 | /* NIC-based logic */ | |
588 | if(!strncmp(idd->nic_part, "030-0891-", 9)) | |
589 | res = IOC3_CLASS_BASE_IP30; | |
590 | if(!strncmp(idd->nic_part, "030-1155-", 9)) | |
591 | res = IOC3_CLASS_CADDUO; | |
592 | if(!strncmp(idd->nic_part, "030-1657-", 9)) | |
593 | res = IOC3_CLASS_SERIAL; | |
594 | if(!strncmp(idd->nic_part, "030-1664-", 9)) | |
595 | res = IOC3_CLASS_SERIAL; | |
596 | /* total random heuristics */ | |
597 | #ifdef CONFIG_SGI_IP27 | |
598 | if(!idd->nic_part[0]) | |
599 | res = IOC3_CLASS_BASE_IP27; | |
600 | #endif | |
601 | /* print educational message */ | |
602 | printk(KERN_INFO "IOC3 part: [%s], serial: [%s] => class %s\n", | |
603 | idd->nic_part, idd->nic_serial, ioc3_class_names[res]); | |
604 | return res; | |
605 | } | |
606 | /* Adds a new instance of an IOC3 card */ | |
607 | static int ioc3_probe(struct pci_dev *pdev, const struct pci_device_id *pci_id) | |
608 | { | |
609 | struct ioc3_driver_data *idd; | |
610 | uint32_t pcmd; | |
611 | int ret, id; | |
612 | ||
613 | /* Enable IOC3 and take ownership of it */ | |
614 | if ((ret = pci_enable_device(pdev))) { | |
615 | printk(KERN_WARNING | |
616 | "%s: Failed to enable IOC3 device for pci_dev %s.\n", | |
617 | __FUNCTION__, pci_name(pdev)); | |
618 | goto out; | |
619 | } | |
620 | pci_set_master(pdev); | |
621 | ||
622 | #ifdef USE_64BIT_DMA | |
56b146d3 | 623 | ret = pci_set_dma_mask(pdev, DMA_64BIT_MASK); |
2d0cfb52 | 624 | if (!ret) { |
56b146d3 | 625 | ret = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK); |
2d0cfb52 PG |
626 | if (ret < 0) { |
627 | printk(KERN_WARNING "%s: Unable to obtain 64 bit DMA " | |
628 | "for consistent allocations\n", | |
629 | __FUNCTION__); | |
630 | } | |
631 | } | |
632 | #endif | |
633 | ||
634 | /* Set up per-IOC3 data */ | |
635 | idd = kmalloc(sizeof(struct ioc3_driver_data), GFP_KERNEL); | |
636 | if (!idd) { | |
637 | printk(KERN_WARNING | |
638 | "%s: Failed to allocate IOC3 data for pci_dev %s.\n", | |
639 | __FUNCTION__, pci_name(pdev)); | |
640 | ret = -ENODEV; | |
641 | goto out_idd; | |
642 | } | |
643 | memset(idd, 0, sizeof(struct ioc3_driver_data)); | |
644 | spin_lock_init(&idd->ir_lock); | |
645 | spin_lock_init(&idd->gpio_lock); | |
646 | idd->pdev = pdev; | |
647 | ||
648 | /* Map all IOC3 registers. These are shared between subdevices | |
649 | * so the main IOC3 module manages them. | |
650 | */ | |
651 | idd->pma = pci_resource_start(pdev, 0); | |
652 | if (!idd->pma) { | |
653 | printk(KERN_WARNING | |
654 | "%s: Unable to find IOC3 resource " | |
655 | "for pci_dev %s.\n", | |
656 | __FUNCTION__, pci_name(pdev)); | |
657 | ret = -ENODEV; | |
658 | goto out_pci; | |
659 | } | |
660 | if (!request_region(idd->pma, IOC3_PCI_SIZE, "ioc3")) { | |
661 | printk(KERN_WARNING | |
662 | "%s: Unable to request IOC3 region " | |
663 | "for pci_dev %s.\n", | |
664 | __FUNCTION__, pci_name(pdev)); | |
665 | ret = -ENODEV; | |
666 | goto out_pci; | |
667 | } | |
668 | idd->vma = ioremap(idd->pma, IOC3_PCI_SIZE); | |
669 | if (!idd->vma) { | |
670 | printk(KERN_WARNING | |
671 | "%s: Unable to remap IOC3 region " | |
672 | "for pci_dev %s.\n", | |
673 | __FUNCTION__, pci_name(pdev)); | |
674 | ret = -ENODEV; | |
675 | goto out_misc_region; | |
676 | } | |
677 | ||
678 | /* Track PCI-device specific data */ | |
679 | pci_set_drvdata(pdev, idd); | |
680 | down_write(&ioc3_devices_rwsem); | |
2c43630f | 681 | list_add_tail(&idd->list, &ioc3_devices); |
2d0cfb52 PG |
682 | idd->id = ioc3_counter++; |
683 | up_write(&ioc3_devices_rwsem); | |
684 | ||
d6561010 | 685 | idd->gpdr_shadow = readl(&idd->vma->gpdr); |
2d0cfb52 PG |
686 | |
687 | /* Read IOC3 NIC contents */ | |
688 | probe_nic(idd); | |
689 | ||
690 | /* Detect IOC3 class */ | |
691 | idd->class = ioc3_class(idd); | |
692 | ||
693 | /* Initialize IOC3 */ | |
694 | pci_read_config_dword(pdev, PCI_COMMAND, &pcmd); | |
695 | pci_write_config_dword(pdev, PCI_COMMAND, | |
696 | pcmd | PCI_COMMAND_MEMORY | | |
697 | PCI_COMMAND_PARITY | PCI_COMMAND_SERR | | |
698 | PCI_SCR_DROP_MODE_EN); | |
699 | ||
700 | write_ireg(idd, ~0, IOC3_W_IEC); | |
701 | writel(~0, &idd->vma->sio_ir); | |
702 | ||
703 | /* Set up IRQs */ | |
704 | if(idd->class == IOC3_CLASS_BASE_IP30 | |
705 | || idd->class == IOC3_CLASS_BASE_IP27) { | |
706 | writel(0, &idd->vma->eier); | |
707 | writel(~0, &idd->vma->eisr); | |
708 | ||
709 | idd->dual_irq = 1; | |
710 | if (!request_irq(pdev->irq, ioc3_intr_eth, SA_SHIRQ, | |
711 | "ioc3-eth", (void *)idd)) { | |
712 | idd->irq_eth = pdev->irq; | |
713 | } else { | |
714 | printk(KERN_WARNING | |
715 | "%s : request_irq fails for IRQ 0x%x\n ", | |
716 | __FUNCTION__, pdev->irq); | |
717 | } | |
718 | if (!request_irq(pdev->irq+2, ioc3_intr_io, SA_SHIRQ, | |
719 | "ioc3-io", (void *)idd)) { | |
720 | idd->irq_io = pdev->irq+2; | |
721 | } else { | |
722 | printk(KERN_WARNING | |
723 | "%s : request_irq fails for IRQ 0x%x\n ", | |
724 | __FUNCTION__, pdev->irq+2); | |
725 | } | |
726 | } else { | |
727 | if (!request_irq(pdev->irq, ioc3_intr_io, SA_SHIRQ, | |
728 | "ioc3", (void *)idd)) { | |
729 | idd->irq_io = pdev->irq; | |
730 | } else { | |
731 | printk(KERN_WARNING | |
732 | "%s : request_irq fails for IRQ 0x%x\n ", | |
733 | __FUNCTION__, pdev->irq); | |
734 | } | |
735 | } | |
736 | ||
737 | /* Add this IOC3 to all submodules */ | |
2d0cfb52 PG |
738 | for(id=0;id<IOC3_MAX_SUBMODULES;id++) |
739 | if(ioc3_submodules[id] && ioc3_submodules[id]->probe) { | |
740 | idd->active[id] = 1; | |
741 | idd->active[id] = !ioc3_submodules[id]->probe | |
742 | (ioc3_submodules[id], idd); | |
743 | } | |
2d0cfb52 PG |
744 | |
745 | printk(KERN_INFO "IOC3 Master Driver loaded for %s\n", pci_name(pdev)); | |
746 | ||
747 | return 0; | |
748 | ||
749 | out_misc_region: | |
750 | release_region(idd->pma, IOC3_PCI_SIZE); | |
751 | out_pci: | |
752 | kfree(idd); | |
753 | out_idd: | |
754 | pci_disable_device(pdev); | |
755 | out: | |
756 | return ret; | |
757 | } | |
758 | ||
759 | /* Removes a particular instance of an IOC3 card. */ | |
760 | static void ioc3_remove(struct pci_dev *pdev) | |
761 | { | |
762 | int id; | |
763 | struct ioc3_driver_data *idd; | |
764 | ||
765 | idd = pci_get_drvdata(pdev); | |
766 | ||
767 | /* Remove this IOC3 from all submodules */ | |
2d0cfb52 PG |
768 | for(id=0;id<IOC3_MAX_SUBMODULES;id++) |
769 | if(idd->active[id]) { | |
770 | if(ioc3_submodules[id] && ioc3_submodules[id]->remove) | |
771 | if(ioc3_submodules[id]->remove(ioc3_submodules[id], | |
772 | idd)) | |
773 | printk(KERN_WARNING | |
774 | "%s: IOC3 submodule 0x%s remove failed " | |
775 | "for pci_dev %s.\n", | |
776 | __FUNCTION__, | |
777 | module_name(ioc3_submodules[id]->owner), | |
778 | pci_name(pdev)); | |
779 | idd->active[id] = 0; | |
780 | } | |
2d0cfb52 PG |
781 | |
782 | /* Clear and disable all IRQs */ | |
783 | write_ireg(idd, ~0, IOC3_W_IEC); | |
784 | writel(~0, &idd->vma->sio_ir); | |
785 | ||
786 | /* Release resources */ | |
787 | free_irq(idd->irq_io, (void *)idd); | |
788 | if(idd->dual_irq) | |
789 | free_irq(idd->irq_eth, (void *)idd); | |
790 | iounmap(idd->vma); | |
791 | release_region(idd->pma, IOC3_PCI_SIZE); | |
792 | ||
793 | /* Disable IOC3 and relinquish */ | |
794 | pci_disable_device(pdev); | |
795 | ||
796 | /* Remove and free driver data */ | |
797 | down_write(&ioc3_devices_rwsem); | |
798 | list_del(&idd->list); | |
799 | up_write(&ioc3_devices_rwsem); | |
800 | kfree(idd); | |
801 | } | |
802 | ||
803 | static struct pci_device_id ioc3_id_table[] = { | |
804 | {PCI_VENDOR_ID_SGI, PCI_DEVICE_ID_SGI_IOC3, PCI_ANY_ID, PCI_ANY_ID}, | |
805 | {0} | |
806 | }; | |
807 | ||
808 | static struct pci_driver ioc3_driver = { | |
809 | .name = "IOC3", | |
810 | .id_table = ioc3_id_table, | |
811 | .probe = ioc3_probe, | |
812 | .remove = ioc3_remove, | |
813 | }; | |
814 | ||
815 | MODULE_DEVICE_TABLE(pci, ioc3_id_table); | |
816 | ||
817 | /********************* | |
818 | * Module management * | |
819 | *********************/ | |
820 | ||
821 | /* Module load */ | |
822 | static int __devinit ioc3_init(void) | |
823 | { | |
824 | if (ia64_platform_is("sn2")) | |
825 | return pci_register_driver(&ioc3_driver); | |
826 | return 0; | |
827 | } | |
828 | ||
829 | /* Module unload */ | |
830 | static void __devexit ioc3_exit(void) | |
831 | { | |
832 | pci_unregister_driver(&ioc3_driver); | |
833 | } | |
834 | ||
835 | module_init(ioc3_init); | |
836 | module_exit(ioc3_exit); | |
837 | ||
838 | MODULE_AUTHOR("Stanislaw Skowronek <skylark@linux-mips.org>"); | |
839 | MODULE_DESCRIPTION("PCI driver for SGI IOC3"); | |
840 | MODULE_LICENSE("GPL"); | |
841 | ||
53d8be5c PG |
842 | EXPORT_SYMBOL_GPL(ioc3_register_submodule); |
843 | EXPORT_SYMBOL_GPL(ioc3_unregister_submodule); | |
844 | EXPORT_SYMBOL_GPL(ioc3_ack); | |
845 | EXPORT_SYMBOL_GPL(ioc3_gpcr_set); | |
846 | EXPORT_SYMBOL_GPL(ioc3_disable); | |
847 | EXPORT_SYMBOL_GPL(ioc3_enable); |