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x86: fix pagetable init 64-bit breakage
[linux-2.6.git] / arch / sparc64 / kernel / prom.c
blob3c048ac4e63859394ea7f28c4a75c91daec9df40
1 /*
2 * Procedures for creating, accessing and interpreting the device tree.
3 *
4 * Paul Mackerras August 1996.
5 * Copyright (C) 1996-2005 Paul Mackerras.
6 *
7 * Adapted for 64bit PowerPC by Dave Engebretsen and Peter Bergner.
8 * {engebret|bergner}@us.ibm.com
9 *
10 * Adapted for sparc64 by David S. Miller davem@davemloft.net
11 *
12 * This program is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU General Public License
14 * as published by the Free Software Foundation; either version
15 * 2 of the License, or (at your option) any later version.
16 */
17
18 #include <linux/kernel.h>
19 #include <linux/types.h>
20 #include <linux/string.h>
21 #include <linux/mm.h>
22 #include <linux/module.h>
23 #include <linux/lmb.h>
24 #include <linux/of_device.h>
25
26 #include <asm/prom.h>
27 #include <asm/oplib.h>
28 #include <asm/irq.h>
29 #include <asm/asi.h>
30 #include <asm/upa.h>
31 #include <asm/smp.h>
32
33 extern struct device_node *allnodes; /* temporary while merging */
34
35 extern rwlock_t devtree_lock; /* temporary while merging */
36
37 struct device_node *of_find_node_by_phandle(phandle handle)
38 {
39 struct device_node *np;
40
41 for (np = allnodes; np != 0; np = np->allnext)
42 if (np->node == handle)
43 break;
44
45 return np;
46 }
47 EXPORT_SYMBOL(of_find_node_by_phandle);
48
49 int of_getintprop_default(struct device_node *np, const char *name, int def)
50 {
51 struct property *prop;
52 int len;
53
54 prop = of_find_property(np, name, &len);
55 if (!prop || len != 4)
56 return def;
57
58 return *(int *) prop->value;
59 }
60 EXPORT_SYMBOL(of_getintprop_default);
61
62 int of_set_property(struct device_node *dp, const char *name, void *val, int len)
63 {
64 struct property **prevp;
65 void *new_val;
66 int err;
67
68 new_val = kmalloc(len, GFP_KERNEL);
69 if (!new_val)
70 return -ENOMEM;
71
72 memcpy(new_val, val, len);
73
74 err = -ENODEV;
75
76 write_lock(&devtree_lock);
77 prevp = &dp->properties;
78 while (*prevp) {
79 struct property *prop = *prevp;
80
81 if (!strcasecmp(prop->name, name)) {
82 void *old_val = prop->value;
83 int ret;
84
85 ret = prom_setprop(dp->node, name, val, len);
86 err = -EINVAL;
87 if (ret >= 0) {
88 prop->value = new_val;
89 prop->length = len;
90
91 if (OF_IS_DYNAMIC(prop))
92 kfree(old_val);
93
94 OF_MARK_DYNAMIC(prop);
95
96 err = 0;
97 }
98 break;
99 }
100 prevp = &(*prevp)->next;
101 }
102 write_unlock(&devtree_lock);
103
104 /* XXX Upate procfs if necessary... */
105
106 return err;
107 }
108 EXPORT_SYMBOL(of_set_property);
109
110 int of_find_in_proplist(const char *list, const char *match, int len)
111 {
112 while (len > 0) {
113 int l;
114
115 if (!strcmp(list, match))
116 return 1;
117 l = strlen(list) + 1;
118 list += l;
119 len -= l;
120 }
121 return 0;
122 }
123 EXPORT_SYMBOL(of_find_in_proplist);
124
125 static unsigned int prom_early_allocated __initdata;
126
127 static void * __init prom_early_alloc(unsigned long size)
128 {
129 unsigned long paddr = lmb_alloc(size, SMP_CACHE_BYTES);
130 void *ret;
131
132 if (!paddr) {
133 prom_printf("prom_early_alloc(%lu) failed\n");
134 prom_halt();
135 }
136
137 ret = __va(paddr);
138 memset(ret, 0, size);
139 prom_early_allocated += size;
140
141 return ret;
142 }
143
144 #ifdef CONFIG_PCI
145 /* PSYCHO interrupt mapping support. */
146 #define PSYCHO_IMAP_A_SLOT0 0x0c00UL
147 #define PSYCHO_IMAP_B_SLOT0 0x0c20UL
148 static unsigned long psycho_pcislot_imap_offset(unsigned long ino)
149 {
150 unsigned int bus = (ino & 0x10) >> 4;
151 unsigned int slot = (ino & 0x0c) >> 2;
152
153 if (bus == 0)
154 return PSYCHO_IMAP_A_SLOT0 + (slot * 8);
155 else
156 return PSYCHO_IMAP_B_SLOT0 + (slot * 8);
157 }
158
159 #define PSYCHO_IMAP_SCSI 0x1000UL
160 #define PSYCHO_IMAP_ETH 0x1008UL
161 #define PSYCHO_IMAP_BPP 0x1010UL
162 #define PSYCHO_IMAP_AU_REC 0x1018UL
163 #define PSYCHO_IMAP_AU_PLAY 0x1020UL
164 #define PSYCHO_IMAP_PFAIL 0x1028UL
165 #define PSYCHO_IMAP_KMS 0x1030UL
166 #define PSYCHO_IMAP_FLPY 0x1038UL
167 #define PSYCHO_IMAP_SHW 0x1040UL
168 #define PSYCHO_IMAP_KBD 0x1048UL
169 #define PSYCHO_IMAP_MS 0x1050UL
170 #define PSYCHO_IMAP_SER 0x1058UL
171 #define PSYCHO_IMAP_TIM0 0x1060UL
172 #define PSYCHO_IMAP_TIM1 0x1068UL
173 #define PSYCHO_IMAP_UE 0x1070UL
174 #define PSYCHO_IMAP_CE 0x1078UL
175 #define PSYCHO_IMAP_A_ERR 0x1080UL
176 #define PSYCHO_IMAP_B_ERR 0x1088UL
177 #define PSYCHO_IMAP_PMGMT 0x1090UL
178 #define PSYCHO_IMAP_GFX 0x1098UL
179 #define PSYCHO_IMAP_EUPA 0x10a0UL
180
181 static unsigned long __psycho_onboard_imap_off[] = {
182 /*0x20*/ PSYCHO_IMAP_SCSI,
183 /*0x21*/ PSYCHO_IMAP_ETH,
184 /*0x22*/ PSYCHO_IMAP_BPP,
185 /*0x23*/ PSYCHO_IMAP_AU_REC,
186 /*0x24*/ PSYCHO_IMAP_AU_PLAY,
187 /*0x25*/ PSYCHO_IMAP_PFAIL,
188 /*0x26*/ PSYCHO_IMAP_KMS,
189 /*0x27*/ PSYCHO_IMAP_FLPY,
190 /*0x28*/ PSYCHO_IMAP_SHW,
191 /*0x29*/ PSYCHO_IMAP_KBD,
192 /*0x2a*/ PSYCHO_IMAP_MS,
193 /*0x2b*/ PSYCHO_IMAP_SER,
194 /*0x2c*/ PSYCHO_IMAP_TIM0,
195 /*0x2d*/ PSYCHO_IMAP_TIM1,
196 /*0x2e*/ PSYCHO_IMAP_UE,
197 /*0x2f*/ PSYCHO_IMAP_CE,
198 /*0x30*/ PSYCHO_IMAP_A_ERR,
199 /*0x31*/ PSYCHO_IMAP_B_ERR,
200 /*0x32*/ PSYCHO_IMAP_PMGMT,
201 /*0x33*/ PSYCHO_IMAP_GFX,
202 /*0x34*/ PSYCHO_IMAP_EUPA,
203 };
204 #define PSYCHO_ONBOARD_IRQ_BASE 0x20
205 #define PSYCHO_ONBOARD_IRQ_LAST 0x34
206 #define psycho_onboard_imap_offset(__ino) \
207 __psycho_onboard_imap_off[(__ino) - PSYCHO_ONBOARD_IRQ_BASE]
208
209 #define PSYCHO_ICLR_A_SLOT0 0x1400UL
210 #define PSYCHO_ICLR_SCSI 0x1800UL
211
212 #define psycho_iclr_offset(ino) \
213 ((ino & 0x20) ? (PSYCHO_ICLR_SCSI + (((ino) & 0x1f) << 3)) : \
214 (PSYCHO_ICLR_A_SLOT0 + (((ino) & 0x1f)<<3)))
215
216 static unsigned int psycho_irq_build(struct device_node *dp,
217 unsigned int ino,
218 void *_data)
219 {
220 unsigned long controller_regs = (unsigned long) _data;
221 unsigned long imap, iclr;
222 unsigned long imap_off, iclr_off;
223 int inofixup = 0;
224
225 ino &= 0x3f;
226 if (ino < PSYCHO_ONBOARD_IRQ_BASE) {
227 /* PCI slot */
228 imap_off = psycho_pcislot_imap_offset(ino);
229 } else {
230 /* Onboard device */
231 if (ino > PSYCHO_ONBOARD_IRQ_LAST) {
232 prom_printf("psycho_irq_build: Wacky INO [%x]\n", ino);
233 prom_halt();
234 }
235 imap_off = psycho_onboard_imap_offset(ino);
236 }
237
238 /* Now build the IRQ bucket. */
239 imap = controller_regs + imap_off;
240
241 iclr_off = psycho_iclr_offset(ino);
242 iclr = controller_regs + iclr_off;
243
244 if ((ino & 0x20) == 0)
245 inofixup = ino & 0x03;
246
247 return build_irq(inofixup, iclr, imap);
248 }
249
250 static void __init psycho_irq_trans_init(struct device_node *dp)
251 {
252 const struct linux_prom64_registers *regs;
253
254 dp->irq_trans = prom_early_alloc(sizeof(struct of_irq_controller));
255 dp->irq_trans->irq_build = psycho_irq_build;
256
257 regs = of_get_property(dp, "reg", NULL);
258 dp->irq_trans->data = (void *) regs[2].phys_addr;
259 }
260
261 #define sabre_read(__reg) \
262 ({ u64 __ret; \
263 __asm__ __volatile__("ldxa [%1] %2, %0" \
264 : "=r" (__ret) \
265 : "r" (__reg), "i" (ASI_PHYS_BYPASS_EC_E) \
266 : "memory"); \
267 __ret; \
268 })
269
270 struct sabre_irq_data {
271 unsigned long controller_regs;
272 unsigned int pci_first_busno;
273 };
274 #define SABRE_CONFIGSPACE 0x001000000UL
275 #define SABRE_WRSYNC 0x1c20UL
276
277 #define SABRE_CONFIG_BASE(CONFIG_SPACE) \
278 (CONFIG_SPACE | (1UL << 24))
279 #define SABRE_CONFIG_ENCODE(BUS, DEVFN, REG) \
280 (((unsigned long)(BUS) << 16) | \
281 ((unsigned long)(DEVFN) << 8) | \
282 ((unsigned long)(REG)))
283
284 /* When a device lives behind a bridge deeper in the PCI bus topology
285 * than APB, a special sequence must run to make sure all pending DMA
286 * transfers at the time of IRQ delivery are visible in the coherency
287 * domain by the cpu. This sequence is to perform a read on the far
288 * side of the non-APB bridge, then perform a read of Sabre's DMA
289 * write-sync register.
290 */
291 static void sabre_wsync_handler(unsigned int ino, void *_arg1, void *_arg2)
292 {
293 unsigned int phys_hi = (unsigned int) (unsigned long) _arg1;
294 struct sabre_irq_data *irq_data = _arg2;
295 unsigned long controller_regs = irq_data->controller_regs;
296 unsigned long sync_reg = controller_regs + SABRE_WRSYNC;
297 unsigned long config_space = controller_regs + SABRE_CONFIGSPACE;
298 unsigned int bus, devfn;
299 u16 _unused;
300
301 config_space = SABRE_CONFIG_BASE(config_space);
302
303 bus = (phys_hi >> 16) & 0xff;
304 devfn = (phys_hi >> 8) & 0xff;
305
306 config_space |= SABRE_CONFIG_ENCODE(bus, devfn, 0x00);
307
308 __asm__ __volatile__("membar #Sync\n\t"
309 "lduha [%1] %2, %0\n\t"
310 "membar #Sync"
311 : "=r" (_unused)
312 : "r" ((u16 *) config_space),
313 "i" (ASI_PHYS_BYPASS_EC_E_L)
314 : "memory");
315
316 sabre_read(sync_reg);
317 }
318
319 #define SABRE_IMAP_A_SLOT0 0x0c00UL
320 #define SABRE_IMAP_B_SLOT0 0x0c20UL
321 #define SABRE_IMAP_SCSI 0x1000UL
322 #define SABRE_IMAP_ETH 0x1008UL
323 #define SABRE_IMAP_BPP 0x1010UL
324 #define SABRE_IMAP_AU_REC 0x1018UL
325 #define SABRE_IMAP_AU_PLAY 0x1020UL
326 #define SABRE_IMAP_PFAIL 0x1028UL
327 #define SABRE_IMAP_KMS 0x1030UL
328 #define SABRE_IMAP_FLPY 0x1038UL
329 #define SABRE_IMAP_SHW 0x1040UL
330 #define SABRE_IMAP_KBD 0x1048UL
331 #define SABRE_IMAP_MS 0x1050UL
332 #define SABRE_IMAP_SER 0x1058UL
333 #define SABRE_IMAP_UE 0x1070UL
334 #define SABRE_IMAP_CE 0x1078UL
335 #define SABRE_IMAP_PCIERR 0x1080UL
336 #define SABRE_IMAP_GFX 0x1098UL
337 #define SABRE_IMAP_EUPA 0x10a0UL
338 #define SABRE_ICLR_A_SLOT0 0x1400UL
339 #define SABRE_ICLR_B_SLOT0 0x1480UL
340 #define SABRE_ICLR_SCSI 0x1800UL
341 #define SABRE_ICLR_ETH 0x1808UL
342 #define SABRE_ICLR_BPP 0x1810UL
343 #define SABRE_ICLR_AU_REC 0x1818UL
344 #define SABRE_ICLR_AU_PLAY 0x1820UL
345 #define SABRE_ICLR_PFAIL 0x1828UL
346 #define SABRE_ICLR_KMS 0x1830UL
347 #define SABRE_ICLR_FLPY 0x1838UL
348 #define SABRE_ICLR_SHW 0x1840UL
349 #define SABRE_ICLR_KBD 0x1848UL
350 #define SABRE_ICLR_MS 0x1850UL
351 #define SABRE_ICLR_SER 0x1858UL
352 #define SABRE_ICLR_UE 0x1870UL
353 #define SABRE_ICLR_CE 0x1878UL
354 #define SABRE_ICLR_PCIERR 0x1880UL
355
356 static unsigned long sabre_pcislot_imap_offset(unsigned long ino)
357 {
358 unsigned int bus = (ino & 0x10) >> 4;
359 unsigned int slot = (ino & 0x0c) >> 2;
360
361 if (bus == 0)
362 return SABRE_IMAP_A_SLOT0 + (slot * 8);
363 else
364 return SABRE_IMAP_B_SLOT0 + (slot * 8);
365 }
366
367 static unsigned long __sabre_onboard_imap_off[] = {
368 /*0x20*/ SABRE_IMAP_SCSI,
369 /*0x21*/ SABRE_IMAP_ETH,
370 /*0x22*/ SABRE_IMAP_BPP,
371 /*0x23*/ SABRE_IMAP_AU_REC,
372 /*0x24*/ SABRE_IMAP_AU_PLAY,
373 /*0x25*/ SABRE_IMAP_PFAIL,
374 /*0x26*/ SABRE_IMAP_KMS,
375 /*0x27*/ SABRE_IMAP_FLPY,
376 /*0x28*/ SABRE_IMAP_SHW,
377 /*0x29*/ SABRE_IMAP_KBD,
378 /*0x2a*/ SABRE_IMAP_MS,
379 /*0x2b*/ SABRE_IMAP_SER,
380 /*0x2c*/ 0 /* reserved */,
381 /*0x2d*/ 0 /* reserved */,
382 /*0x2e*/ SABRE_IMAP_UE,
383 /*0x2f*/ SABRE_IMAP_CE,
384 /*0x30*/ SABRE_IMAP_PCIERR,
385 /*0x31*/ 0 /* reserved */,
386 /*0x32*/ 0 /* reserved */,
387 /*0x33*/ SABRE_IMAP_GFX,
388 /*0x34*/ SABRE_IMAP_EUPA,
389 };
390 #define SABRE_ONBOARD_IRQ_BASE 0x20
391 #define SABRE_ONBOARD_IRQ_LAST 0x30
392 #define sabre_onboard_imap_offset(__ino) \
393 __sabre_onboard_imap_off[(__ino) - SABRE_ONBOARD_IRQ_BASE]
394
395 #define sabre_iclr_offset(ino) \
396 ((ino & 0x20) ? (SABRE_ICLR_SCSI + (((ino) & 0x1f) << 3)) : \
397 (SABRE_ICLR_A_SLOT0 + (((ino) & 0x1f)<<3)))
398
399 static int sabre_device_needs_wsync(struct device_node *dp)
400 {
401 struct device_node *parent = dp->parent;
402 const char *parent_model, *parent_compat;
403
404 /* This traversal up towards the root is meant to
405 * handle two cases:
406 *
407 * 1) non-PCI bus sitting under PCI, such as 'ebus'
408 * 2) the PCI controller interrupts themselves, which
409 * will use the sabre_irq_build but do not need
410 * the DMA synchronization handling
411 */
412 while (parent) {
413 if (!strcmp(parent->type, "pci"))
414 break;
415 parent = parent->parent;
416 }
417
418 if (!parent)
419 return 0;
420
421 parent_model = of_get_property(parent,
422 "model", NULL);
423 if (parent_model &&
424 (!strcmp(parent_model, "SUNW,sabre") ||
425 !strcmp(parent_model, "SUNW,simba")))
426 return 0;
427
428 parent_compat = of_get_property(parent,
429 "compatible", NULL);
430 if (parent_compat &&
431 (!strcmp(parent_compat, "pci108e,a000") ||
432 !strcmp(parent_compat, "pci108e,a001")))
433 return 0;
434
435 return 1;
436 }
437
438 static unsigned int sabre_irq_build(struct device_node *dp,
439 unsigned int ino,
440 void *_data)
441 {
442 struct sabre_irq_data *irq_data = _data;
443 unsigned long controller_regs = irq_data->controller_regs;
444 const struct linux_prom_pci_registers *regs;
445 unsigned long imap, iclr;
446 unsigned long imap_off, iclr_off;
447 int inofixup = 0;
448 int virt_irq;
449
450 ino &= 0x3f;
451 if (ino < SABRE_ONBOARD_IRQ_BASE) {
452 /* PCI slot */
453 imap_off = sabre_pcislot_imap_offset(ino);
454 } else {
455 /* onboard device */
456 if (ino > SABRE_ONBOARD_IRQ_LAST) {
457 prom_printf("sabre_irq_build: Wacky INO [%x]\n", ino);
458 prom_halt();
459 }
460 imap_off = sabre_onboard_imap_offset(ino);
461 }
462
463 /* Now build the IRQ bucket. */
464 imap = controller_regs + imap_off;
465
466 iclr_off = sabre_iclr_offset(ino);
467 iclr = controller_regs + iclr_off;
468
469 if ((ino & 0x20) == 0)
470 inofixup = ino & 0x03;
471
472 virt_irq = build_irq(inofixup, iclr, imap);
473
474 /* If the parent device is a PCI<->PCI bridge other than
475 * APB, we have to install a pre-handler to ensure that
476 * all pending DMA is drained before the interrupt handler
477 * is run.
478 */
479 regs = of_get_property(dp, "reg", NULL);
480 if (regs && sabre_device_needs_wsync(dp)) {
481 irq_install_pre_handler(virt_irq,
482 sabre_wsync_handler,
483 (void *) (long) regs->phys_hi,
484 (void *) irq_data);
485 }
486
487 return virt_irq;
488 }
489
490 static void __init sabre_irq_trans_init(struct device_node *dp)
491 {
492 const struct linux_prom64_registers *regs;
493 struct sabre_irq_data *irq_data;
494 const u32 *busrange;
495
496 dp->irq_trans = prom_early_alloc(sizeof(struct of_irq_controller));
497 dp->irq_trans->irq_build = sabre_irq_build;
498
499 irq_data = prom_early_alloc(sizeof(struct sabre_irq_data));
500
501 regs = of_get_property(dp, "reg", NULL);
502 irq_data->controller_regs = regs[0].phys_addr;
503
504 busrange = of_get_property(dp, "bus-range", NULL);
505 irq_data->pci_first_busno = busrange[0];
506
507 dp->irq_trans->data = irq_data;
508 }
509
510 /* SCHIZO interrupt mapping support. Unlike Psycho, for this controller the
511 * imap/iclr registers are per-PBM.
512 */
513 #define SCHIZO_IMAP_BASE 0x1000UL
514 #define SCHIZO_ICLR_BASE 0x1400UL
515
516 static unsigned long schizo_imap_offset(unsigned long ino)
517 {
518 return SCHIZO_IMAP_BASE + (ino * 8UL);
519 }
520
521 static unsigned long schizo_iclr_offset(unsigned long ino)
522 {
523 return SCHIZO_ICLR_BASE + (ino * 8UL);
524 }
525
526 static unsigned long schizo_ino_to_iclr(unsigned long pbm_regs,
527 unsigned int ino)
528 {
529
530 return pbm_regs + schizo_iclr_offset(ino);
531 }
532
533 static unsigned long schizo_ino_to_imap(unsigned long pbm_regs,
534 unsigned int ino)
535 {
536 return pbm_regs + schizo_imap_offset(ino);
537 }
538
539 #define schizo_read(__reg) \
540 ({ u64 __ret; \
541 __asm__ __volatile__("ldxa [%1] %2, %0" \
542 : "=r" (__ret) \
543 : "r" (__reg), "i" (ASI_PHYS_BYPASS_EC_E) \
544 : "memory"); \
545 __ret; \
546 })
547 #define schizo_write(__reg, __val) \
548 __asm__ __volatile__("stxa %0, [%1] %2" \
549 : /* no outputs */ \
550 : "r" (__val), "r" (__reg), \
551 "i" (ASI_PHYS_BYPASS_EC_E) \
552 : "memory")
553
554 static void tomatillo_wsync_handler(unsigned int ino, void *_arg1, void *_arg2)
555 {
556 unsigned long sync_reg = (unsigned long) _arg2;
557 u64 mask = 1UL << (ino & IMAP_INO);
558 u64 val;
559 int limit;
560
561 schizo_write(sync_reg, mask);
562
563 limit = 100000;
564 val = 0;
565 while (--limit) {
566 val = schizo_read(sync_reg);
567 if (!(val & mask))
568 break;
569 }
570 if (limit <= 0) {
571 printk("tomatillo_wsync_handler: DMA won't sync [%lx:%lx]\n",
572 val, mask);
573 }
574
575 if (_arg1) {
576 static unsigned char cacheline[64]
577 __attribute__ ((aligned (64)));
578
579 __asm__ __volatile__("rd %%fprs, %0\n\t"
580 "or %0, %4, %1\n\t"
581 "wr %1, 0x0, %%fprs\n\t"
582 "stda %%f0, [%5] %6\n\t"
583 "wr %0, 0x0, %%fprs\n\t"
584 "membar #Sync"
585 : "=&r" (mask), "=&r" (val)
586 : "0" (mask), "1" (val),
587 "i" (FPRS_FEF), "r" (&cacheline[0]),
588 "i" (ASI_BLK_COMMIT_P));
589 }
590 }
591
592 struct schizo_irq_data {
593 unsigned long pbm_regs;
594 unsigned long sync_reg;
595 u32 portid;
596 int chip_version;
597 };
598
599 static unsigned int schizo_irq_build(struct device_node *dp,
600 unsigned int ino,
601 void *_data)
602 {
603 struct schizo_irq_data *irq_data = _data;
604 unsigned long pbm_regs = irq_data->pbm_regs;
605 unsigned long imap, iclr;
606 int ign_fixup;
607 int virt_irq;
608 int is_tomatillo;
609
610 ino &= 0x3f;
611
612 /* Now build the IRQ bucket. */
613 imap = schizo_ino_to_imap(pbm_regs, ino);
614 iclr = schizo_ino_to_iclr(pbm_regs, ino);
615
616 /* On Schizo, no inofixup occurs. This is because each
617 * INO has it's own IMAP register. On Psycho and Sabre
618 * there is only one IMAP register for each PCI slot even
619 * though four different INOs can be generated by each
620 * PCI slot.
621 *
622 * But, for JBUS variants (essentially, Tomatillo), we have
623 * to fixup the lowest bit of the interrupt group number.
624 */
625 ign_fixup = 0;
626
627 is_tomatillo = (irq_data->sync_reg != 0UL);
628
629 if (is_tomatillo) {
630 if (irq_data->portid & 1)
631 ign_fixup = (1 << 6);
632 }
633
634 virt_irq = build_irq(ign_fixup, iclr, imap);
635
636 if (is_tomatillo) {
637 irq_install_pre_handler(virt_irq,
638 tomatillo_wsync_handler,
639 ((irq_data->chip_version <= 4) ?
640 (void *) 1 : (void *) 0),
641 (void *) irq_data->sync_reg);
642 }
643
644 return virt_irq;
645 }
646
647 static void __init __schizo_irq_trans_init(struct device_node *dp,
648 int is_tomatillo)
649 {
650 const struct linux_prom64_registers *regs;
651 struct schizo_irq_data *irq_data;
652
653 dp->irq_trans = prom_early_alloc(sizeof(struct of_irq_controller));
654 dp->irq_trans->irq_build = schizo_irq_build;
655
656 irq_data = prom_early_alloc(sizeof(struct schizo_irq_data));
657
658 regs = of_get_property(dp, "reg", NULL);
659 dp->irq_trans->data = irq_data;
660
661 irq_data->pbm_regs = regs[0].phys_addr;
662 if (is_tomatillo)
663 irq_data->sync_reg = regs[3].phys_addr + 0x1a18UL;
664 else
665 irq_data->sync_reg = 0UL;
666 irq_data->portid = of_getintprop_default(dp, "portid", 0);
667 irq_data->chip_version = of_getintprop_default(dp, "version#", 0);
668 }
669
670 static void __init schizo_irq_trans_init(struct device_node *dp)
671 {
672 __schizo_irq_trans_init(dp, 0);
673 }
674
675 static void __init tomatillo_irq_trans_init(struct device_node *dp)
676 {
677 __schizo_irq_trans_init(dp, 1);
678 }
679
680 static unsigned int pci_sun4v_irq_build(struct device_node *dp,
681 unsigned int devino,
682 void *_data)
683 {
684 u32 devhandle = (u32) (unsigned long) _data;
685
686 return sun4v_build_irq(devhandle, devino);
687 }
688
689 static void __init pci_sun4v_irq_trans_init(struct device_node *dp)
690 {
691 const struct linux_prom64_registers *regs;
692
693 dp->irq_trans = prom_early_alloc(sizeof(struct of_irq_controller));
694 dp->irq_trans->irq_build = pci_sun4v_irq_build;
695
696 regs = of_get_property(dp, "reg", NULL);
697 dp->irq_trans->data = (void *) (unsigned long)
698 ((regs->phys_addr >> 32UL) & 0x0fffffff);
699 }
700
701 struct fire_irq_data {
702 unsigned long pbm_regs;
703 u32 portid;
704 };
705
706 #define FIRE_IMAP_BASE 0x001000
707 #define FIRE_ICLR_BASE 0x001400
708
709 static unsigned long fire_imap_offset(unsigned long ino)
710 {
711 return FIRE_IMAP_BASE + (ino * 8UL);
712 }
713
714 static unsigned long fire_iclr_offset(unsigned long ino)
715 {
716 return FIRE_ICLR_BASE + (ino * 8UL);
717 }
718
719 static unsigned long fire_ino_to_iclr(unsigned long pbm_regs,
720 unsigned int ino)
721 {
722 return pbm_regs + fire_iclr_offset(ino);
723 }
724
725 static unsigned long fire_ino_to_imap(unsigned long pbm_regs,
726 unsigned int ino)
727 {
728 return pbm_regs + fire_imap_offset(ino);
729 }
730
731 static unsigned int fire_irq_build(struct device_node *dp,
732 unsigned int ino,
733 void *_data)
734 {
735 struct fire_irq_data *irq_data = _data;
736 unsigned long pbm_regs = irq_data->pbm_regs;
737 unsigned long imap, iclr;
738 unsigned long int_ctrlr;
739
740 ino &= 0x3f;
741
742 /* Now build the IRQ bucket. */
743 imap = fire_ino_to_imap(pbm_regs, ino);
744 iclr = fire_ino_to_iclr(pbm_regs, ino);
745
746 /* Set the interrupt controller number. */
747 int_ctrlr = 1 << 6;
748 upa_writeq(int_ctrlr, imap);
749
750 /* The interrupt map registers do not have an INO field
751 * like other chips do. They return zero in the INO
752 * field, and the interrupt controller number is controlled
753 * in bits 6 to 9. So in order for build_irq() to get
754 * the INO right we pass it in as part of the fixup
755 * which will get added to the map register zero value
756 * read by build_irq().
757 */
758 ino |= (irq_data->portid << 6);
759 ino -= int_ctrlr;
760 return build_irq(ino, iclr, imap);
761 }
762
763 static void __init fire_irq_trans_init(struct device_node *dp)
764 {
765 const struct linux_prom64_registers *regs;
766 struct fire_irq_data *irq_data;
767
768 dp->irq_trans = prom_early_alloc(sizeof(struct of_irq_controller));
769 dp->irq_trans->irq_build = fire_irq_build;
770
771 irq_data = prom_early_alloc(sizeof(struct fire_irq_data));
772
773 regs = of_get_property(dp, "reg", NULL);
774 dp->irq_trans->data = irq_data;
775
776 irq_data->pbm_regs = regs[0].phys_addr;
777 irq_data->portid = of_getintprop_default(dp, "portid", 0);
778 }
779 #endif /* CONFIG_PCI */
780
781 #ifdef CONFIG_SBUS
782 /* INO number to IMAP register offset for SYSIO external IRQ's.
783 * This should conform to both Sunfire/Wildfire server and Fusion
784 * desktop designs.
785 */
786 #define SYSIO_IMAP_SLOT0 0x2c00UL
787 #define SYSIO_IMAP_SLOT1 0x2c08UL
788 #define SYSIO_IMAP_SLOT2 0x2c10UL
789 #define SYSIO_IMAP_SLOT3 0x2c18UL
790 #define SYSIO_IMAP_SCSI 0x3000UL
791 #define SYSIO_IMAP_ETH 0x3008UL
792 #define SYSIO_IMAP_BPP 0x3010UL
793 #define SYSIO_IMAP_AUDIO 0x3018UL
794 #define SYSIO_IMAP_PFAIL 0x3020UL
795 #define SYSIO_IMAP_KMS 0x3028UL
796 #define SYSIO_IMAP_FLPY 0x3030UL
797 #define SYSIO_IMAP_SHW 0x3038UL
798 #define SYSIO_IMAP_KBD 0x3040UL
799 #define SYSIO_IMAP_MS 0x3048UL
800 #define SYSIO_IMAP_SER 0x3050UL
801 #define SYSIO_IMAP_TIM0 0x3060UL
802 #define SYSIO_IMAP_TIM1 0x3068UL
803 #define SYSIO_IMAP_UE 0x3070UL
804 #define SYSIO_IMAP_CE 0x3078UL
805 #define SYSIO_IMAP_SBERR 0x3080UL
806 #define SYSIO_IMAP_PMGMT 0x3088UL
807 #define SYSIO_IMAP_GFX 0x3090UL
808 #define SYSIO_IMAP_EUPA 0x3098UL
809
810 #define bogon ((unsigned long) -1)
811 static unsigned long sysio_irq_offsets[] = {
812 /* SBUS Slot 0 --> 3, level 1 --> 7 */
813 SYSIO_IMAP_SLOT0, SYSIO_IMAP_SLOT0, SYSIO_IMAP_SLOT0, SYSIO_IMAP_SLOT0,
814 SYSIO_IMAP_SLOT0, SYSIO_IMAP_SLOT0, SYSIO_IMAP_SLOT0, SYSIO_IMAP_SLOT0,
815 SYSIO_IMAP_SLOT1, SYSIO_IMAP_SLOT1, SYSIO_IMAP_SLOT1, SYSIO_IMAP_SLOT1,
816 SYSIO_IMAP_SLOT1, SYSIO_IMAP_SLOT1, SYSIO_IMAP_SLOT1, SYSIO_IMAP_SLOT1,
817 SYSIO_IMAP_SLOT2, SYSIO_IMAP_SLOT2, SYSIO_IMAP_SLOT2, SYSIO_IMAP_SLOT2,
818 SYSIO_IMAP_SLOT2, SYSIO_IMAP_SLOT2, SYSIO_IMAP_SLOT2, SYSIO_IMAP_SLOT2,
819 SYSIO_IMAP_SLOT3, SYSIO_IMAP_SLOT3, SYSIO_IMAP_SLOT3, SYSIO_IMAP_SLOT3,
820 SYSIO_IMAP_SLOT3, SYSIO_IMAP_SLOT3, SYSIO_IMAP_SLOT3, SYSIO_IMAP_SLOT3,
821
822 /* Onboard devices (not relevant/used on SunFire). */
823 SYSIO_IMAP_SCSI,
824 SYSIO_IMAP_ETH,
825 SYSIO_IMAP_BPP,
826 bogon,
827 SYSIO_IMAP_AUDIO,
828 SYSIO_IMAP_PFAIL,
829 bogon,
830 bogon,
831 SYSIO_IMAP_KMS,
832 SYSIO_IMAP_FLPY,
833 SYSIO_IMAP_SHW,
834 SYSIO_IMAP_KBD,
835 SYSIO_IMAP_MS,
836 SYSIO_IMAP_SER,
837 bogon,
838 bogon,
839 SYSIO_IMAP_TIM0,
840 SYSIO_IMAP_TIM1,
841 bogon,
842 bogon,
843 SYSIO_IMAP_UE,
844 SYSIO_IMAP_CE,
845 SYSIO_IMAP_SBERR,
846 SYSIO_IMAP_PMGMT,
847 SYSIO_IMAP_GFX,
848 SYSIO_IMAP_EUPA,
849 };
850
851 #undef bogon
852
853 #define NUM_SYSIO_OFFSETS ARRAY_SIZE(sysio_irq_offsets)
854
855 /* Convert Interrupt Mapping register pointer to associated
856 * Interrupt Clear register pointer, SYSIO specific version.
857 */
858 #define SYSIO_ICLR_UNUSED0 0x3400UL
859 #define SYSIO_ICLR_SLOT0 0x3408UL
860 #define SYSIO_ICLR_SLOT1 0x3448UL
861 #define SYSIO_ICLR_SLOT2 0x3488UL
862 #define SYSIO_ICLR_SLOT3 0x34c8UL
863 static unsigned long sysio_imap_to_iclr(unsigned long imap)
864 {
865 unsigned long diff = SYSIO_ICLR_UNUSED0 - SYSIO_IMAP_SLOT0;
866 return imap + diff;
867 }
868
869 static unsigned int sbus_of_build_irq(struct device_node *dp,
870 unsigned int ino,
871 void *_data)
872 {
873 unsigned long reg_base = (unsigned long) _data;
874 const struct linux_prom_registers *regs;
875 unsigned long imap, iclr;
876 int sbus_slot = 0;
877 int sbus_level = 0;
878
879 ino &= 0x3f;
880
881 regs = of_get_property(dp, "reg", NULL);
882 if (regs)
883 sbus_slot = regs->which_io;
884
885 if (ino < 0x20)
886 ino += (sbus_slot * 8);
887
888 imap = sysio_irq_offsets[ino];
889 if (imap == ((unsigned long)-1)) {
890 prom_printf("get_irq_translations: Bad SYSIO INO[%x]\n",
891 ino);
892 prom_halt();
893 }
894 imap += reg_base;
895
896 /* SYSIO inconsistency. For external SLOTS, we have to select
897 * the right ICLR register based upon the lower SBUS irq level
898 * bits.
899 */
900 if (ino >= 0x20) {
901 iclr = sysio_imap_to_iclr(imap);
902 } else {
903 sbus_level = ino & 0x7;
904
905 switch(sbus_slot) {
906 case 0:
907 iclr = reg_base + SYSIO_ICLR_SLOT0;
908 break;
909 case 1:
910 iclr = reg_base + SYSIO_ICLR_SLOT1;
911 break;
912 case 2:
913 iclr = reg_base + SYSIO_ICLR_SLOT2;
914 break;
915 default:
916 case 3:
917 iclr = reg_base + SYSIO_ICLR_SLOT3;
918 break;
919 };
920
921 iclr += ((unsigned long)sbus_level - 1UL) * 8UL;
922 }
923 return build_irq(sbus_level, iclr, imap);
924 }
925
926 static void __init sbus_irq_trans_init(struct device_node *dp)
927 {
928 const struct linux_prom64_registers *regs;
929
930 dp->irq_trans = prom_early_alloc(sizeof(struct of_irq_controller));
931 dp->irq_trans->irq_build = sbus_of_build_irq;
932
933 regs = of_get_property(dp, "reg", NULL);
934 dp->irq_trans->data = (void *) (unsigned long) regs->phys_addr;
935 }
936 #endif /* CONFIG_SBUS */
937
938
939 static unsigned int central_build_irq(struct device_node *dp,
940 unsigned int ino,
941 void *_data)
942 {
943 struct device_node *central_dp = _data;
944 struct of_device *central_op = of_find_device_by_node(central_dp);
945 struct resource *res;
946 unsigned long imap, iclr;
947 u32 tmp;
948
949 if (!strcmp(dp->name, "eeprom")) {
950 res = &central_op->resource[5];
951 } else if (!strcmp(dp->name, "zs")) {
952 res = &central_op->resource[4];
953 } else if (!strcmp(dp->name, "clock-board")) {
954 res = &central_op->resource[3];
955 } else {
956 return ino;
957 }
958
959 imap = res->start + 0x00UL;
960 iclr = res->start + 0x10UL;
961
962 /* Set the INO state to idle, and disable. */
963 upa_writel(0, iclr);
964 upa_readl(iclr);
965
966 tmp = upa_readl(imap);
967 tmp &= ~0x80000000;
968 upa_writel(tmp, imap);
969
970 return build_irq(0, iclr, imap);
971 }
972
973 static void __init central_irq_trans_init(struct device_node *dp)
974 {
975 dp->irq_trans = prom_early_alloc(sizeof(struct of_irq_controller));
976 dp->irq_trans->irq_build = central_build_irq;
977
978 dp->irq_trans->data = dp;
979 }
980
981 struct irq_trans {
982 const char *name;
983 void (*init)(struct device_node *);
984 };
985
986 #ifdef CONFIG_PCI
987 static struct irq_trans __initdata pci_irq_trans_table[] = {
988 { "SUNW,sabre", sabre_irq_trans_init },
989 { "pci108e,a000", sabre_irq_trans_init },
990 { "pci108e,a001", sabre_irq_trans_init },
991 { "SUNW,psycho", psycho_irq_trans_init },
992 { "pci108e,8000", psycho_irq_trans_init },
993 { "SUNW,schizo", schizo_irq_trans_init },
994 { "pci108e,8001", schizo_irq_trans_init },
995 { "SUNW,schizo+", schizo_irq_trans_init },
996 { "pci108e,8002", schizo_irq_trans_init },
997 { "SUNW,tomatillo", tomatillo_irq_trans_init },
998 { "pci108e,a801", tomatillo_irq_trans_init },
999 { "SUNW,sun4v-pci", pci_sun4v_irq_trans_init },
1000 { "pciex108e,80f0", fire_irq_trans_init },
1001 };
1002 #endif
1003
1004 static unsigned int sun4v_vdev_irq_build(struct device_node *dp,
1005 unsigned int devino,
1006 void *_data)
1007 {
1008 u32 devhandle = (u32) (unsigned long) _data;
1009
1010 return sun4v_build_irq(devhandle, devino);
1011 }
1012
1013 static void __init sun4v_vdev_irq_trans_init(struct device_node *dp)
1014 {
1015 const struct linux_prom64_registers *regs;
1016
1017 dp->irq_trans = prom_early_alloc(sizeof(struct of_irq_controller));
1018 dp->irq_trans->irq_build = sun4v_vdev_irq_build;
1019
1020 regs = of_get_property(dp, "reg", NULL);
1021 dp->irq_trans->data = (void *) (unsigned long)
1022 ((regs->phys_addr >> 32UL) & 0x0fffffff);
1023 }
1024
1025 static void __init irq_trans_init(struct device_node *dp)
1026 {
1027 #ifdef CONFIG_PCI
1028 const char *model;
1029 int i;
1030 #endif
1031
1032 #ifdef CONFIG_PCI
1033 model = of_get_property(dp, "model", NULL);
1034 if (!model)
1035 model = of_get_property(dp, "compatible", NULL);
1036 if (model) {
1037 for (i = 0; i < ARRAY_SIZE(pci_irq_trans_table); i++) {
1038 struct irq_trans *t = &pci_irq_trans_table[i];
1039
1040 if (!strcmp(model, t->name))
1041 return t->init(dp);
1042 }
1043 }
1044 #endif
1045 #ifdef CONFIG_SBUS
1046 if (!strcmp(dp->name, "sbus") ||
1047 !strcmp(dp->name, "sbi"))
1048 return sbus_irq_trans_init(dp);
1049 #endif
1050 if (!strcmp(dp->name, "fhc") &&
1051 !strcmp(dp->parent->name, "central"))
1052 return central_irq_trans_init(dp);
1053 if (!strcmp(dp->name, "virtual-devices") ||
1054 !strcmp(dp->name, "niu"))
1055 return sun4v_vdev_irq_trans_init(dp);
1056 }
1057
1058 static int is_root_node(const struct device_node *dp)
1059 {
1060 if (!dp)
1061 return 0;
1062
1063 return (dp->parent == NULL);
1064 }
1065
1066 /* The following routines deal with the black magic of fully naming a
1067 * node.
1068 *
1069 * Certain well known named nodes are just the simple name string.
1070 *
1071 * Actual devices have an address specifier appended to the base name
1072 * string, like this "foo@addr". The "addr" can be in any number of
1073 * formats, and the platform plus the type of the node determine the
1074 * format and how it is constructed.
1075 *
1076 * For children of the ROOT node, the naming convention is fixed and
1077 * determined by whether this is a sun4u or sun4v system.
1078 *
1079 * For children of other nodes, it is bus type specific. So
1080 * we walk up the tree until we discover a "device_type" property
1081 * we recognize and we go from there.
1082 *
1083 * As an example, the boot device on my workstation has a full path:
1084 *
1085 * /pci@1e,600000/ide@d/disk@0,0:c
1086 */
1087 static void __init sun4v_path_component(struct device_node *dp, char *tmp_buf)
1088 {
1089 struct linux_prom64_registers *regs;
1090 struct property *rprop;
1091 u32 high_bits, low_bits, type;
1092
1093 rprop = of_find_property(dp, "reg", NULL);
1094 if (!rprop)
1095 return;
1096
1097 regs = rprop->value;
1098 if (!is_root_node(dp->parent)) {
1099 sprintf(tmp_buf, "%s@%x,%x",
1100 dp->name,
1101 (unsigned int) (regs->phys_addr >> 32UL),
1102 (unsigned int) (regs->phys_addr & 0xffffffffUL));
1103 return;
1104 }
1105
1106 type = regs->phys_addr >> 60UL;
1107 high_bits = (regs->phys_addr >> 32UL) & 0x0fffffffUL;
1108 low_bits = (regs->phys_addr & 0xffffffffUL);
1109
1110 if (type == 0 || type == 8) {
1111 const char *prefix = (type == 0) ? "m" : "i";
1112
1113 if (low_bits)
1114 sprintf(tmp_buf, "%s@%s%x,%x",
1115 dp->name, prefix,
1116 high_bits, low_bits);
1117 else
1118 sprintf(tmp_buf, "%s@%s%x",
1119 dp->name,
1120 prefix,
1121 high_bits);
1122 } else if (type == 12) {
1123 sprintf(tmp_buf, "%s@%x",
1124 dp->name, high_bits);
1125 }
1126 }
1127
1128 static void __init sun4u_path_component(struct device_node *dp, char *tmp_buf)
1129 {
1130 struct linux_prom64_registers *regs;
1131 struct property *prop;
1132
1133 prop = of_find_property(dp, "reg", NULL);
1134 if (!prop)
1135 return;
1136
1137 regs = prop->value;
1138 if (!is_root_node(dp->parent)) {
1139 sprintf(tmp_buf, "%s@%x,%x",
1140 dp->name,
1141 (unsigned int) (regs->phys_addr >> 32UL),
1142 (unsigned int) (regs->phys_addr & 0xffffffffUL));
1143 return;
1144 }
1145
1146 prop = of_find_property(dp, "upa-portid", NULL);
1147 if (!prop)
1148 prop = of_find_property(dp, "portid", NULL);
1149 if (prop) {
1150 unsigned long mask = 0xffffffffUL;
1151
1152 if (tlb_type >= cheetah)
1153 mask = 0x7fffff;
1154
1155 sprintf(tmp_buf, "%s@%x,%x",
1156 dp->name,
1157 *(u32 *)prop->value,
1158 (unsigned int) (regs->phys_addr & mask));
1159 }
1160 }
1161
1162 /* "name@slot,offset" */
1163 static void __init sbus_path_component(struct device_node *dp, char *tmp_buf)
1164 {
1165 struct linux_prom_registers *regs;
1166 struct property *prop;
1167
1168 prop = of_find_property(dp, "reg", NULL);
1169 if (!prop)
1170 return;
1171
1172 regs = prop->value;
1173 sprintf(tmp_buf, "%s@%x,%x",
1174 dp->name,
1175 regs->which_io,
1176 regs->phys_addr);
1177 }
1178
1179 /* "name@devnum[,func]" */
1180 static void __init pci_path_component(struct device_node *dp, char *tmp_buf)
1181 {
1182 struct linux_prom_pci_registers *regs;
1183 struct property *prop;
1184 unsigned int devfn;
1185
1186 prop = of_find_property(dp, "reg", NULL);
1187 if (!prop)
1188 return;
1189
1190 regs = prop->value;
1191 devfn = (regs->phys_hi >> 8) & 0xff;
1192 if (devfn & 0x07) {
1193 sprintf(tmp_buf, "%s@%x,%x",
1194 dp->name,
1195 devfn >> 3,
1196 devfn & 0x07);
1197 } else {
1198 sprintf(tmp_buf, "%s@%x",
1199 dp->name,
1200 devfn >> 3);
1201 }
1202 }
1203
1204 /* "name@UPA_PORTID,offset" */
1205 static void __init upa_path_component(struct device_node *dp, char *tmp_buf)
1206 {
1207 struct linux_prom64_registers *regs;
1208 struct property *prop;
1209
1210 prop = of_find_property(dp, "reg", NULL);
1211 if (!prop)
1212 return;
1213
1214 regs = prop->value;
1215
1216 prop = of_find_property(dp, "upa-portid", NULL);
1217 if (!prop)
1218 return;
1219
1220 sprintf(tmp_buf, "%s@%x,%x",
1221 dp->name,
1222 *(u32 *) prop->value,
1223 (unsigned int) (regs->phys_addr & 0xffffffffUL));
1224 }
1225
1226 /* "name@reg" */
1227 static void __init vdev_path_component(struct device_node *dp, char *tmp_buf)
1228 {
1229 struct property *prop;
1230 u32 *regs;
1231
1232 prop = of_find_property(dp, "reg", NULL);
1233 if (!prop)
1234 return;
1235
1236 regs = prop->value;
1237
1238 sprintf(tmp_buf, "%s@%x", dp->name, *regs);
1239 }
1240
1241 /* "name@addrhi,addrlo" */
1242 static void __init ebus_path_component(struct device_node *dp, char *tmp_buf)
1243 {
1244 struct linux_prom64_registers *regs;
1245 struct property *prop;
1246
1247 prop = of_find_property(dp, "reg", NULL);
1248 if (!prop)
1249 return;
1250
1251 regs = prop->value;
1252
1253 sprintf(tmp_buf, "%s@%x,%x",
1254 dp->name,
1255 (unsigned int) (regs->phys_addr >> 32UL),
1256 (unsigned int) (regs->phys_addr & 0xffffffffUL));
1257 }
1258
1259 /* "name@bus,addr" */
1260 static void __init i2c_path_component(struct device_node *dp, char *tmp_buf)
1261 {
1262 struct property *prop;
1263 u32 *regs;
1264
1265 prop = of_find_property(dp, "reg", NULL);
1266 if (!prop)
1267 return;
1268
1269 regs = prop->value;
1270
1271 /* This actually isn't right... should look at the #address-cells
1272 * property of the i2c bus node etc. etc.
1273 */
1274 sprintf(tmp_buf, "%s@%x,%x",
1275 dp->name, regs[0], regs[1]);
1276 }
1277
1278 /* "name@reg0[,reg1]" */
1279 static void __init usb_path_component(struct device_node *dp, char *tmp_buf)
1280 {
1281 struct property *prop;
1282 u32 *regs;
1283
1284 prop = of_find_property(dp, "reg", NULL);
1285 if (!prop)
1286 return;
1287
1288 regs = prop->value;
1289
1290 if (prop->length == sizeof(u32) || regs[1] == 1) {
1291 sprintf(tmp_buf, "%s@%x",
1292 dp->name, regs[0]);
1293 } else {
1294 sprintf(tmp_buf, "%s@%x,%x",
1295 dp->name, regs[0], regs[1]);
1296 }
1297 }
1298
1299 /* "name@reg0reg1[,reg2reg3]" */
1300 static void __init ieee1394_path_component(struct device_node *dp, char *tmp_buf)
1301 {
1302 struct property *prop;
1303 u32 *regs;
1304
1305 prop = of_find_property(dp, "reg", NULL);
1306 if (!prop)
1307 return;
1308
1309 regs = prop->value;
1310
1311 if (regs[2] || regs[3]) {
1312 sprintf(tmp_buf, "%s@%08x%08x,%04x%08x",
1313 dp->name, regs[0], regs[1], regs[2], regs[3]);
1314 } else {
1315 sprintf(tmp_buf, "%s@%08x%08x",
1316 dp->name, regs[0], regs[1]);
1317 }
1318 }
1319
1320 static void __init __build_path_component(struct device_node *dp, char *tmp_buf)
1321 {
1322 struct device_node *parent = dp->parent;
1323
1324 if (parent != NULL) {
1325 if (!strcmp(parent->type, "pci") ||
1326 !strcmp(parent->type, "pciex"))
1327 return pci_path_component(dp, tmp_buf);
1328 if (!strcmp(parent->type, "sbus"))
1329 return sbus_path_component(dp, tmp_buf);
1330 if (!strcmp(parent->type, "upa"))
1331 return upa_path_component(dp, tmp_buf);
1332 if (!strcmp(parent->type, "ebus"))
1333 return ebus_path_component(dp, tmp_buf);
1334 if (!strcmp(parent->name, "usb") ||
1335 !strcmp(parent->name, "hub"))
1336 return usb_path_component(dp, tmp_buf);
1337 if (!strcmp(parent->type, "i2c"))
1338 return i2c_path_component(dp, tmp_buf);
1339 if (!strcmp(parent->type, "firewire"))
1340 return ieee1394_path_component(dp, tmp_buf);
1341 if (!strcmp(parent->type, "virtual-devices"))
1342 return vdev_path_component(dp, tmp_buf);
1343
1344 /* "isa" is handled with platform naming */
1345 }
1346
1347 /* Use platform naming convention. */
1348 if (tlb_type == hypervisor)
1349 return sun4v_path_component(dp, tmp_buf);
1350 else
1351 return sun4u_path_component(dp, tmp_buf);
1352 }
1353
1354 static char * __init build_path_component(struct device_node *dp)
1355 {
1356 char tmp_buf[64], *n;
1357
1358 tmp_buf[0] = '\0';
1359 __build_path_component(dp, tmp_buf);
1360 if (tmp_buf[0] == '\0')
1361 strcpy(tmp_buf, dp->name);
1362
1363 n = prom_early_alloc(strlen(tmp_buf) + 1);
1364 strcpy(n, tmp_buf);
1365
1366 return n;
1367 }
1368
1369 static char * __init build_full_name(struct device_node *dp)
1370 {
1371 int len, ourlen, plen;
1372 char *n;
1373
1374 plen = strlen(dp->parent->full_name);
1375 ourlen = strlen(dp->path_component_name);
1376 len = ourlen + plen + 2;
1377
1378 n = prom_early_alloc(len);
1379 strcpy(n, dp->parent->full_name);
1380 if (!is_root_node(dp->parent)) {
1381 strcpy(n + plen, "/");
1382 plen++;
1383 }
1384 strcpy(n + plen, dp->path_component_name);
1385
1386 return n;
1387 }
1388
1389 static unsigned int unique_id;
1390
1391 static struct property * __init build_one_prop(phandle node, char *prev, char *special_name, void *special_val, int special_len)
1392 {
1393 static struct property *tmp = NULL;
1394 struct property *p;
1395
1396 if (tmp) {
1397 p = tmp;
1398 memset(p, 0, sizeof(*p) + 32);
1399 tmp = NULL;
1400 } else {
1401 p = prom_early_alloc(sizeof(struct property) + 32);
1402 p->unique_id = unique_id++;
1403 }
1404
1405 p->name = (char *) (p + 1);
1406 if (special_name) {
1407 strcpy(p->name, special_name);
1408 p->length = special_len;
1409 p->value = prom_early_alloc(special_len);
1410 memcpy(p->value, special_val, special_len);
1411 } else {
1412 if (prev == NULL) {
1413 prom_firstprop(node, p->name);
1414 } else {
1415 prom_nextprop(node, prev, p->name);
1416 }
1417 if (strlen(p->name) == 0) {
1418 tmp = p;
1419 return NULL;
1420 }
1421 p->length = prom_getproplen(node, p->name);
1422 if (p->length <= 0) {
1423 p->length = 0;
1424 } else {
1425 p->value = prom_early_alloc(p->length + 1);
1426 prom_getproperty(node, p->name, p->value, p->length);
1427 ((unsigned char *)p->value)[p->length] = '\0';
1428 }
1429 }
1430 return p;
1431 }
1432
1433 static struct property * __init build_prop_list(phandle node)
1434 {
1435 struct property *head, *tail;
1436
1437 head = tail = build_one_prop(node, NULL,
1438 ".node", &node, sizeof(node));
1439
1440 tail->next = build_one_prop(node, NULL, NULL, NULL, 0);
1441 tail = tail->next;
1442 while(tail) {
1443 tail->next = build_one_prop(node, tail->name,
1444 NULL, NULL, 0);
1445 tail = tail->next;
1446 }
1447
1448 return head;
1449 }
1450
1451 static char * __init get_one_property(phandle node, const char *name)
1452 {
1453 char *buf = "<NULL>";
1454 int len;
1455
1456 len = prom_getproplen(node, name);
1457 if (len > 0) {
1458 buf = prom_early_alloc(len);
1459 prom_getproperty(node, name, buf, len);
1460 }
1461
1462 return buf;
1463 }
1464
1465 static struct device_node * __init create_node(phandle node, struct device_node *parent)
1466 {
1467 struct device_node *dp;
1468
1469 if (!node)
1470 return NULL;
1471
1472 dp = prom_early_alloc(sizeof(*dp));
1473 dp->unique_id = unique_id++;
1474 dp->parent = parent;
1475
1476 kref_init(&dp->kref);
1477
1478 dp->name = get_one_property(node, "name");
1479 dp->type = get_one_property(node, "device_type");
1480 dp->node = node;
1481
1482 dp->properties = build_prop_list(node);
1483
1484 irq_trans_init(dp);
1485
1486 return dp;
1487 }
1488
1489 static struct device_node * __init build_tree(struct device_node *parent, phandle node, struct device_node ***nextp)
1490 {
1491 struct device_node *ret = NULL, *prev_sibling = NULL;
1492 struct device_node *dp;
1493
1494 while (1) {
1495 dp = create_node(node, parent);
1496 if (!dp)
1497 break;
1498
1499 if (prev_sibling)
1500 prev_sibling->sibling = dp;
1501
1502 if (!ret)
1503 ret = dp;
1504 prev_sibling = dp;
1505
1506 *(*nextp) = dp;
1507 *nextp = &dp->allnext;
1508
1509 dp->path_component_name = build_path_component(dp);
1510 dp->full_name = build_full_name(dp);
1511
1512 dp->child = build_tree(dp, prom_getchild(node), nextp);
1513
1514 node = prom_getsibling(node);
1515 }
1516
1517 return ret;
1518 }
1519
1520 static const char *get_mid_prop(void)
1521 {
1522 return (tlb_type == spitfire ? "upa-portid" : "portid");
1523 }
1524
1525 struct device_node *of_find_node_by_cpuid(int cpuid)
1526 {
1527 struct device_node *dp;
1528 const char *mid_prop = get_mid_prop();
1529
1530 for_each_node_by_type(dp, "cpu") {
1531 int id = of_getintprop_default(dp, mid_prop, -1);
1532 const char *this_mid_prop = mid_prop;
1533
1534 if (id < 0) {
1535 this_mid_prop = "cpuid";
1536 id = of_getintprop_default(dp, this_mid_prop, -1);
1537 }
1538
1539 if (id < 0) {
1540 prom_printf("OF: Serious problem, cpu lacks "
1541 "%s property", this_mid_prop);
1542 prom_halt();
1543 }
1544 if (cpuid == id)
1545 return dp;
1546 }
1547 return NULL;
1548 }
1549
1550 static void __init of_fill_in_cpu_data(void)
1551 {
1552 struct device_node *dp;
1553 const char *mid_prop = get_mid_prop();
1554
1555 ncpus_probed = 0;
1556 for_each_node_by_type(dp, "cpu") {
1557 int cpuid = of_getintprop_default(dp, mid_prop, -1);
1558 const char *this_mid_prop = mid_prop;
1559 struct device_node *portid_parent;
1560 int portid = -1;
1561
1562 portid_parent = NULL;
1563 if (cpuid < 0) {
1564 this_mid_prop = "cpuid";
1565 cpuid = of_getintprop_default(dp, this_mid_prop, -1);
1566 if (cpuid >= 0) {
1567 int limit = 2;
1568
1569 portid_parent = dp;
1570 while (limit--) {
1571 portid_parent = portid_parent->parent;
1572 if (!portid_parent)
1573 break;
1574 portid = of_getintprop_default(portid_parent,
1575 "portid", -1);
1576 if (portid >= 0)
1577 break;
1578 }
1579 }
1580 }
1581
1582 if (cpuid < 0) {
1583 prom_printf("OF: Serious problem, cpu lacks "
1584 "%s property", this_mid_prop);
1585 prom_halt();
1586 }
1587
1588 ncpus_probed++;
1589
1590 #ifdef CONFIG_SMP
1591 if (cpuid >= NR_CPUS) {
1592 printk(KERN_WARNING "Ignoring CPU %d which is "
1593 ">= NR_CPUS (%d)\n",
1594 cpuid, NR_CPUS);
1595 continue;
1596 }
1597 #else
1598 /* On uniprocessor we only want the values for the
1599 * real physical cpu the kernel booted onto, however
1600 * cpu_data() only has one entry at index 0.
1601 */
1602 if (cpuid != real_hard_smp_processor_id())
1603 continue;
1604 cpuid = 0;
1605 #endif
1606
1607 cpu_data(cpuid).clock_tick =
1608 of_getintprop_default(dp, "clock-frequency", 0);
1609
1610 if (portid_parent) {
1611 cpu_data(cpuid).dcache_size =
1612 of_getintprop_default(dp, "l1-dcache-size",
1613 16 * 1024);
1614 cpu_data(cpuid).dcache_line_size =
1615 of_getintprop_default(dp, "l1-dcache-line-size",
1616 32);
1617 cpu_data(cpuid).icache_size =
1618 of_getintprop_default(dp, "l1-icache-size",
1619 8 * 1024);
1620 cpu_data(cpuid).icache_line_size =
1621 of_getintprop_default(dp, "l1-icache-line-size",
1622 32);
1623 cpu_data(cpuid).ecache_size =
1624 of_getintprop_default(dp, "l2-cache-size", 0);
1625 cpu_data(cpuid).ecache_line_size =
1626 of_getintprop_default(dp, "l2-cache-line-size", 0);
1627 if (!cpu_data(cpuid).ecache_size ||
1628 !cpu_data(cpuid).ecache_line_size) {
1629 cpu_data(cpuid).ecache_size =
1630 of_getintprop_default(portid_parent,
1631 "l2-cache-size",
1632 (4 * 1024 * 1024));
1633 cpu_data(cpuid).ecache_line_size =
1634 of_getintprop_default(portid_parent,
1635 "l2-cache-line-size", 64);
1636 }
1637
1638 cpu_data(cpuid).core_id = portid + 1;
1639 cpu_data(cpuid).proc_id = portid;
1640 #ifdef CONFIG_SMP
1641 sparc64_multi_core = 1;
1642 #endif
1643 } else {
1644 cpu_data(cpuid).dcache_size =
1645 of_getintprop_default(dp, "dcache-size", 16 * 1024);
1646 cpu_data(cpuid).dcache_line_size =
1647 of_getintprop_default(dp, "dcache-line-size", 32);
1648
1649 cpu_data(cpuid).icache_size =
1650 of_getintprop_default(dp, "icache-size", 16 * 1024);
1651 cpu_data(cpuid).icache_line_size =
1652 of_getintprop_default(dp, "icache-line-size", 32);
1653
1654 cpu_data(cpuid).ecache_size =
1655 of_getintprop_default(dp, "ecache-size",
1656 (4 * 1024 * 1024));
1657 cpu_data(cpuid).ecache_line_size =
1658 of_getintprop_default(dp, "ecache-line-size", 64);
1659
1660 cpu_data(cpuid).core_id = 0;
1661 cpu_data(cpuid).proc_id = -1;
1662 }
1663
1664 #ifdef CONFIG_SMP
1665 cpu_set(cpuid, cpu_present_map);
1666 cpu_set(cpuid, cpu_possible_map);
1667 #endif
1668 }
1669
1670 smp_fill_in_sib_core_maps();
1671 }
1672
1673 struct device_node *of_console_device;
1674 EXPORT_SYMBOL(of_console_device);
1675
1676 char *of_console_path;
1677 EXPORT_SYMBOL(of_console_path);
1678
1679 char *of_console_options;
1680 EXPORT_SYMBOL(of_console_options);
1681
1682 static void __init of_console_init(void)
1683 {
1684 char *msg = "OF stdout device is: %s\n";
1685 struct device_node *dp;
1686 const char *type;
1687 phandle node;
1688
1689 of_console_path = prom_early_alloc(256);
1690 if (prom_ihandle2path(prom_stdout, of_console_path, 256) < 0) {
1691 prom_printf("Cannot obtain path of stdout.\n");
1692 prom_halt();
1693 }
1694 of_console_options = strrchr(of_console_path, ':');
1695 if (of_console_options) {
1696 of_console_options++;
1697 if (*of_console_options == '\0')
1698 of_console_options = NULL;
1699 }
1700
1701 node = prom_inst2pkg(prom_stdout);
1702 if (!node) {
1703 prom_printf("Cannot resolve stdout node from "
1704 "instance %08x.\n", prom_stdout);
1705 prom_halt();
1706 }
1707
1708 dp = of_find_node_by_phandle(node);
1709 type = of_get_property(dp, "device_type", NULL);
1710 if (!type) {
1711 prom_printf("Console stdout lacks device_type property.\n");
1712 prom_halt();
1713 }
1714
1715 if (strcmp(type, "display") && strcmp(type, "serial")) {
1716 prom_printf("Console device_type is neither display "
1717 "nor serial.\n");
1718 prom_halt();
1719 }
1720
1721 of_console_device = dp;
1722
1723 printk(msg, of_console_path);
1724 }
1725
1726 void __init prom_build_devicetree(void)
1727 {
1728 struct device_node **nextp;
1729
1730 allnodes = create_node(prom_root_node, NULL);
1731 allnodes->path_component_name = "";
1732 allnodes->full_name = "/";
1733
1734 nextp = &allnodes->allnext;
1735 allnodes->child = build_tree(allnodes,
1736 prom_getchild(allnodes->node),
1737 &nextp);
1738 of_console_init();
1739
1740 printk("PROM: Built device tree with %u bytes of memory.\n",
1741 prom_early_allocated);
1742
1743 if (tlb_type != hypervisor)
1744 of_fill_in_cpu_data();
1745 }
Linus' kernel tree