Commit | Line | Data |
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5cbc3073 DM |
1 | /* mdesc.c: Sun4V machine description handling. |
2 | * | |
3 | * Copyright (C) 2007 David S. Miller <davem@davemloft.net> | |
4 | */ | |
5 | #include <linux/kernel.h> | |
6 | #include <linux/types.h> | |
7 | #include <linux/bootmem.h> | |
8 | #include <linux/log2.h> | |
43fdf274 DM |
9 | #include <linux/list.h> |
10 | #include <linux/slab.h> | |
8f3fff20 | 11 | #include <linux/mm.h> |
5cbc3073 DM |
12 | |
13 | #include <asm/hypervisor.h> | |
14 | #include <asm/mdesc.h> | |
15 | #include <asm/prom.h> | |
16 | #include <asm/oplib.h> | |
17 | #include <asm/smp.h> | |
18 | ||
19 | /* Unlike the OBP device tree, the machine description is a full-on | |
20 | * DAG. An arbitrary number of ARCs are possible from one | |
21 | * node to other nodes and thus we can't use the OBP device_node | |
22 | * data structure to represent these nodes inside of the kernel. | |
23 | * | |
24 | * Actually, it isn't even a DAG, because there are back pointers | |
25 | * which create cycles in the graph. | |
26 | * | |
27 | * mdesc_hdr and mdesc_elem describe the layout of the data structure | |
28 | * we get from the Hypervisor. | |
29 | */ | |
30 | struct mdesc_hdr { | |
31 | u32 version; /* Transport version */ | |
32 | u32 node_sz; /* node block size */ | |
33 | u32 name_sz; /* name block size */ | |
34 | u32 data_sz; /* data block size */ | |
43fdf274 | 35 | } __attribute__((aligned(16))); |
5cbc3073 DM |
36 | |
37 | struct mdesc_elem { | |
38 | u8 tag; | |
39 | #define MD_LIST_END 0x00 | |
40 | #define MD_NODE 0x4e | |
41 | #define MD_NODE_END 0x45 | |
42 | #define MD_NOOP 0x20 | |
43 | #define MD_PROP_ARC 0x61 | |
44 | #define MD_PROP_VAL 0x76 | |
45 | #define MD_PROP_STR 0x73 | |
46 | #define MD_PROP_DATA 0x64 | |
47 | u8 name_len; | |
48 | u16 resv; | |
49 | u32 name_offset; | |
50 | union { | |
51 | struct { | |
52 | u32 data_len; | |
53 | u32 data_offset; | |
54 | } data; | |
55 | u64 val; | |
56 | } d; | |
57 | }; | |
58 | ||
43fdf274 DM |
59 | struct mdesc_mem_ops { |
60 | struct mdesc_handle *(*alloc)(unsigned int mdesc_size); | |
61 | void (*free)(struct mdesc_handle *handle); | |
62 | }; | |
5cbc3073 | 63 | |
43fdf274 DM |
64 | struct mdesc_handle { |
65 | struct list_head list; | |
66 | struct mdesc_mem_ops *mops; | |
67 | void *self_base; | |
68 | atomic_t refcnt; | |
69 | unsigned int handle_size; | |
70 | struct mdesc_hdr mdesc; | |
71 | }; | |
5cbc3073 | 72 | |
43fdf274 DM |
73 | static void mdesc_handle_init(struct mdesc_handle *hp, |
74 | unsigned int handle_size, | |
75 | void *base) | |
5cbc3073 | 76 | { |
43fdf274 DM |
77 | BUG_ON(((unsigned long)&hp->mdesc) & (16UL - 1)); |
78 | ||
79 | memset(hp, 0, handle_size); | |
80 | INIT_LIST_HEAD(&hp->list); | |
81 | hp->self_base = base; | |
82 | atomic_set(&hp->refcnt, 1); | |
83 | hp->handle_size = handle_size; | |
5cbc3073 DM |
84 | } |
85 | ||
43fdf274 | 86 | static struct mdesc_handle *mdesc_bootmem_alloc(unsigned int mdesc_size) |
5cbc3073 | 87 | { |
43fdf274 DM |
88 | struct mdesc_handle *hp; |
89 | unsigned int handle_size, alloc_size; | |
5cbc3073 | 90 | |
43fdf274 DM |
91 | handle_size = (sizeof(struct mdesc_handle) - |
92 | sizeof(struct mdesc_hdr) + | |
93 | mdesc_size); | |
94 | alloc_size = PAGE_ALIGN(handle_size); | |
5cbc3073 | 95 | |
43fdf274 DM |
96 | hp = __alloc_bootmem(alloc_size, PAGE_SIZE, 0UL); |
97 | if (hp) | |
98 | mdesc_handle_init(hp, handle_size, hp); | |
99 | ||
100 | return hp; | |
5cbc3073 DM |
101 | } |
102 | ||
43fdf274 | 103 | static void mdesc_bootmem_free(struct mdesc_handle *hp) |
5cbc3073 | 104 | { |
43fdf274 DM |
105 | unsigned int alloc_size, handle_size = hp->handle_size; |
106 | unsigned long start, end; | |
5cbc3073 | 107 | |
43fdf274 DM |
108 | BUG_ON(atomic_read(&hp->refcnt) != 0); |
109 | BUG_ON(!list_empty(&hp->list)); | |
5cbc3073 | 110 | |
43fdf274 DM |
111 | alloc_size = PAGE_ALIGN(handle_size); |
112 | ||
113 | start = (unsigned long) hp; | |
114 | end = start + alloc_size; | |
115 | ||
116 | while (start < end) { | |
117 | struct page *p; | |
118 | ||
119 | p = virt_to_page(start); | |
120 | ClearPageReserved(p); | |
121 | __free_page(p); | |
122 | start += PAGE_SIZE; | |
5cbc3073 | 123 | } |
5cbc3073 DM |
124 | } |
125 | ||
43fdf274 DM |
126 | static struct mdesc_mem_ops bootmem_mdesc_memops = { |
127 | .alloc = mdesc_bootmem_alloc, | |
128 | .free = mdesc_bootmem_free, | |
129 | }; | |
130 | ||
131 | static struct mdesc_handle *mdesc_kmalloc(unsigned int mdesc_size) | |
5cbc3073 | 132 | { |
43fdf274 DM |
133 | unsigned int handle_size; |
134 | void *base; | |
5cbc3073 | 135 | |
43fdf274 DM |
136 | handle_size = (sizeof(struct mdesc_handle) - |
137 | sizeof(struct mdesc_hdr) + | |
138 | mdesc_size); | |
139 | ||
140 | base = kmalloc(handle_size + 15, GFP_KERNEL); | |
141 | if (base) { | |
142 | struct mdesc_handle *hp; | |
143 | unsigned long addr; | |
144 | ||
145 | addr = (unsigned long)base; | |
146 | addr = (addr + 15UL) & ~15UL; | |
147 | hp = (struct mdesc_handle *) addr; | |
148 | ||
149 | mdesc_handle_init(hp, handle_size, base); | |
150 | return hp; | |
5cbc3073 | 151 | } |
43fdf274 DM |
152 | |
153 | return NULL; | |
5cbc3073 | 154 | } |
5cbc3073 | 155 | |
43fdf274 | 156 | static void mdesc_kfree(struct mdesc_handle *hp) |
5cbc3073 | 157 | { |
43fdf274 DM |
158 | BUG_ON(atomic_read(&hp->refcnt) != 0); |
159 | BUG_ON(!list_empty(&hp->list)); | |
160 | ||
161 | kfree(hp->self_base); | |
5cbc3073 | 162 | } |
5cbc3073 | 163 | |
43fdf274 DM |
164 | static struct mdesc_mem_ops kmalloc_mdesc_memops = { |
165 | .alloc = mdesc_kmalloc, | |
166 | .free = mdesc_kfree, | |
167 | }; | |
168 | ||
169 | static struct mdesc_handle *mdesc_alloc(unsigned int mdesc_size, | |
170 | struct mdesc_mem_ops *mops) | |
5cbc3073 | 171 | { |
43fdf274 | 172 | struct mdesc_handle *hp = mops->alloc(mdesc_size); |
5cbc3073 | 173 | |
43fdf274 DM |
174 | if (hp) |
175 | hp->mops = mops; | |
5cbc3073 | 176 | |
43fdf274 DM |
177 | return hp; |
178 | } | |
5cbc3073 | 179 | |
43fdf274 | 180 | static void mdesc_free(struct mdesc_handle *hp) |
5cbc3073 | 181 | { |
43fdf274 DM |
182 | hp->mops->free(hp); |
183 | } | |
5cbc3073 | 184 | |
43fdf274 DM |
185 | static struct mdesc_handle *cur_mdesc; |
186 | static LIST_HEAD(mdesc_zombie_list); | |
187 | static DEFINE_SPINLOCK(mdesc_lock); | |
5cbc3073 | 188 | |
43fdf274 DM |
189 | struct mdesc_handle *mdesc_grab(void) |
190 | { | |
191 | struct mdesc_handle *hp; | |
192 | unsigned long flags; | |
5cbc3073 | 193 | |
43fdf274 DM |
194 | spin_lock_irqsave(&mdesc_lock, flags); |
195 | hp = cur_mdesc; | |
196 | if (hp) | |
197 | atomic_inc(&hp->refcnt); | |
198 | spin_unlock_irqrestore(&mdesc_lock, flags); | |
5cbc3073 | 199 | |
43fdf274 | 200 | return hp; |
5cbc3073 | 201 | } |
43fdf274 | 202 | EXPORT_SYMBOL(mdesc_grab); |
5cbc3073 | 203 | |
43fdf274 | 204 | void mdesc_release(struct mdesc_handle *hp) |
5cbc3073 | 205 | { |
43fdf274 | 206 | unsigned long flags; |
5cbc3073 | 207 | |
43fdf274 DM |
208 | spin_lock_irqsave(&mdesc_lock, flags); |
209 | if (atomic_dec_and_test(&hp->refcnt)) { | |
210 | list_del_init(&hp->list); | |
211 | hp->mops->free(hp); | |
5cbc3073 | 212 | } |
43fdf274 | 213 | spin_unlock_irqrestore(&mdesc_lock, flags); |
5cbc3073 | 214 | } |
43fdf274 | 215 | EXPORT_SYMBOL(mdesc_release); |
5cbc3073 | 216 | |
43fdf274 | 217 | static void do_mdesc_update(struct work_struct *work) |
5cbc3073 | 218 | { |
43fdf274 DM |
219 | unsigned long len, real_len, status; |
220 | struct mdesc_handle *hp, *orig_hp; | |
221 | unsigned long flags; | |
222 | ||
223 | (void) sun4v_mach_desc(0UL, 0UL, &len); | |
224 | ||
225 | hp = mdesc_alloc(len, &kmalloc_mdesc_memops); | |
226 | if (!hp) { | |
227 | printk(KERN_ERR "MD: mdesc alloc fails\n"); | |
228 | return; | |
229 | } | |
230 | ||
231 | status = sun4v_mach_desc(__pa(&hp->mdesc), len, &real_len); | |
232 | if (status != HV_EOK || real_len > len) { | |
233 | printk(KERN_ERR "MD: mdesc reread fails with %lu\n", | |
234 | status); | |
235 | atomic_dec(&hp->refcnt); | |
236 | mdesc_free(hp); | |
237 | return; | |
238 | } | |
5cbc3073 | 239 | |
43fdf274 DM |
240 | spin_lock_irqsave(&mdesc_lock, flags); |
241 | orig_hp = cur_mdesc; | |
242 | cur_mdesc = hp; | |
5cbc3073 | 243 | |
43fdf274 DM |
244 | if (atomic_dec_and_test(&orig_hp->refcnt)) |
245 | mdesc_free(orig_hp); | |
246 | else | |
247 | list_add(&orig_hp->list, &mdesc_zombie_list); | |
248 | spin_unlock_irqrestore(&mdesc_lock, flags); | |
5cbc3073 DM |
249 | } |
250 | ||
43fdf274 DM |
251 | static DECLARE_WORK(mdesc_update_work, do_mdesc_update); |
252 | ||
253 | void mdesc_update(void) | |
254 | { | |
255 | schedule_work(&mdesc_update_work); | |
256 | } | |
257 | ||
258 | static struct mdesc_elem *node_block(struct mdesc_hdr *mdesc) | |
5cbc3073 DM |
259 | { |
260 | return (struct mdesc_elem *) (mdesc + 1); | |
261 | } | |
262 | ||
43fdf274 | 263 | static void *name_block(struct mdesc_hdr *mdesc) |
5cbc3073 DM |
264 | { |
265 | return ((void *) node_block(mdesc)) + mdesc->node_sz; | |
266 | } | |
267 | ||
43fdf274 | 268 | static void *data_block(struct mdesc_hdr *mdesc) |
5cbc3073 DM |
269 | { |
270 | return ((void *) name_block(mdesc)) + mdesc->name_sz; | |
271 | } | |
272 | ||
43fdf274 DM |
273 | u64 mdesc_node_by_name(struct mdesc_handle *hp, |
274 | u64 from_node, const char *name) | |
5cbc3073 | 275 | { |
43fdf274 DM |
276 | struct mdesc_elem *ep = node_block(&hp->mdesc); |
277 | const char *names = name_block(&hp->mdesc); | |
278 | u64 last_node = hp->mdesc.node_sz / 16; | |
279 | u64 ret; | |
280 | ||
281 | if (from_node == MDESC_NODE_NULL) | |
282 | from_node = 0; | |
283 | ||
284 | if (from_node >= last_node) | |
285 | return MDESC_NODE_NULL; | |
286 | ||
287 | ret = ep[from_node].d.val; | |
288 | while (ret < last_node) { | |
289 | if (ep[ret].tag != MD_NODE) | |
290 | return MDESC_NODE_NULL; | |
291 | if (!strcmp(names + ep[ret].name_offset, name)) | |
292 | break; | |
293 | ret = ep[ret].d.val; | |
294 | } | |
295 | if (ret >= last_node) | |
296 | ret = MDESC_NODE_NULL; | |
297 | return ret; | |
298 | } | |
299 | EXPORT_SYMBOL(mdesc_node_by_name); | |
5cbc3073 | 300 | |
43fdf274 DM |
301 | const void *mdesc_get_property(struct mdesc_handle *hp, u64 node, |
302 | const char *name, int *lenp) | |
303 | { | |
304 | const char *names = name_block(&hp->mdesc); | |
305 | u64 last_node = hp->mdesc.node_sz / 16; | |
306 | void *data = data_block(&hp->mdesc); | |
307 | struct mdesc_elem *ep; | |
5cbc3073 | 308 | |
43fdf274 DM |
309 | if (node == MDESC_NODE_NULL || node >= last_node) |
310 | return NULL; | |
5cbc3073 | 311 | |
43fdf274 DM |
312 | ep = node_block(&hp->mdesc) + node; |
313 | ep++; | |
314 | for (; ep->tag != MD_NODE_END; ep++) { | |
315 | void *val = NULL; | |
316 | int len = 0; | |
317 | ||
318 | switch (ep->tag) { | |
319 | case MD_PROP_VAL: | |
320 | val = &ep->d.val; | |
321 | len = 8; | |
5cbc3073 DM |
322 | break; |
323 | ||
43fdf274 DM |
324 | case MD_PROP_STR: |
325 | case MD_PROP_DATA: | |
326 | val = data + ep->d.data.data_offset; | |
327 | len = ep->d.data.data_len; | |
328 | break; | |
5cbc3073 | 329 | |
43fdf274 | 330 | default: |
5cbc3073 DM |
331 | break; |
332 | } | |
43fdf274 DM |
333 | if (!val) |
334 | continue; | |
5cbc3073 | 335 | |
43fdf274 DM |
336 | if (!strcmp(names + ep->name_offset, name)) { |
337 | if (lenp) | |
338 | *lenp = len; | |
339 | return val; | |
340 | } | |
5cbc3073 DM |
341 | } |
342 | ||
43fdf274 DM |
343 | return NULL; |
344 | } | |
345 | EXPORT_SYMBOL(mdesc_get_property); | |
5cbc3073 | 346 | |
43fdf274 DM |
347 | u64 mdesc_next_arc(struct mdesc_handle *hp, u64 from, const char *arc_type) |
348 | { | |
349 | struct mdesc_elem *ep, *base = node_block(&hp->mdesc); | |
350 | const char *names = name_block(&hp->mdesc); | |
351 | u64 last_node = hp->mdesc.node_sz / 16; | |
5cbc3073 | 352 | |
43fdf274 DM |
353 | if (from == MDESC_NODE_NULL || from >= last_node) |
354 | return MDESC_NODE_NULL; | |
5cbc3073 | 355 | |
43fdf274 DM |
356 | ep = base + from; |
357 | ||
358 | ep++; | |
359 | for (; ep->tag != MD_NODE_END; ep++) { | |
360 | if (ep->tag != MD_PROP_ARC) | |
361 | continue; | |
362 | ||
363 | if (strcmp(names + ep->name_offset, arc_type)) | |
364 | continue; | |
365 | ||
366 | return ep - base; | |
5cbc3073 | 367 | } |
43fdf274 DM |
368 | |
369 | return MDESC_NODE_NULL; | |
5cbc3073 | 370 | } |
43fdf274 | 371 | EXPORT_SYMBOL(mdesc_next_arc); |
5cbc3073 | 372 | |
43fdf274 | 373 | u64 mdesc_arc_target(struct mdesc_handle *hp, u64 arc) |
5cbc3073 | 374 | { |
43fdf274 DM |
375 | struct mdesc_elem *ep, *base = node_block(&hp->mdesc); |
376 | ||
377 | ep = base + arc; | |
378 | ||
379 | return ep->d.val; | |
5cbc3073 | 380 | } |
43fdf274 DM |
381 | EXPORT_SYMBOL(mdesc_arc_target); |
382 | ||
383 | const char *mdesc_node_name(struct mdesc_handle *hp, u64 node) | |
384 | { | |
385 | struct mdesc_elem *ep, *base = node_block(&hp->mdesc); | |
386 | const char *names = name_block(&hp->mdesc); | |
387 | u64 last_node = hp->mdesc.node_sz / 16; | |
388 | ||
389 | if (node == MDESC_NODE_NULL || node >= last_node) | |
390 | return NULL; | |
391 | ||
392 | ep = base + node; | |
393 | if (ep->tag != MD_NODE) | |
394 | return NULL; | |
395 | ||
396 | return names + ep->name_offset; | |
397 | } | |
398 | EXPORT_SYMBOL(mdesc_node_name); | |
5cbc3073 DM |
399 | |
400 | static void __init report_platform_properties(void) | |
401 | { | |
43fdf274 DM |
402 | struct mdesc_handle *hp = mdesc_grab(); |
403 | u64 pn = mdesc_node_by_name(hp, MDESC_NODE_NULL, "platform"); | |
5cbc3073 DM |
404 | const char *s; |
405 | const u64 *v; | |
406 | ||
43fdf274 | 407 | if (pn == MDESC_NODE_NULL) { |
5cbc3073 DM |
408 | prom_printf("No platform node in machine-description.\n"); |
409 | prom_halt(); | |
410 | } | |
411 | ||
43fdf274 | 412 | s = mdesc_get_property(hp, pn, "banner-name", NULL); |
5cbc3073 | 413 | printk("PLATFORM: banner-name [%s]\n", s); |
43fdf274 | 414 | s = mdesc_get_property(hp, pn, "name", NULL); |
5cbc3073 DM |
415 | printk("PLATFORM: name [%s]\n", s); |
416 | ||
43fdf274 | 417 | v = mdesc_get_property(hp, pn, "hostid", NULL); |
5cbc3073 DM |
418 | if (v) |
419 | printk("PLATFORM: hostid [%08lx]\n", *v); | |
43fdf274 | 420 | v = mdesc_get_property(hp, pn, "serial#", NULL); |
5cbc3073 DM |
421 | if (v) |
422 | printk("PLATFORM: serial# [%08lx]\n", *v); | |
43fdf274 | 423 | v = mdesc_get_property(hp, pn, "stick-frequency", NULL); |
5cbc3073 | 424 | printk("PLATFORM: stick-frequency [%08lx]\n", *v); |
43fdf274 | 425 | v = mdesc_get_property(hp, pn, "mac-address", NULL); |
5cbc3073 DM |
426 | if (v) |
427 | printk("PLATFORM: mac-address [%lx]\n", *v); | |
43fdf274 | 428 | v = mdesc_get_property(hp, pn, "watchdog-resolution", NULL); |
5cbc3073 DM |
429 | if (v) |
430 | printk("PLATFORM: watchdog-resolution [%lu ms]\n", *v); | |
43fdf274 | 431 | v = mdesc_get_property(hp, pn, "watchdog-max-timeout", NULL); |
5cbc3073 DM |
432 | if (v) |
433 | printk("PLATFORM: watchdog-max-timeout [%lu ms]\n", *v); | |
43fdf274 | 434 | v = mdesc_get_property(hp, pn, "max-cpus", NULL); |
5cbc3073 DM |
435 | if (v) |
436 | printk("PLATFORM: max-cpus [%lu]\n", *v); | |
43fdf274 | 437 | |
4f0234f4 DM |
438 | #ifdef CONFIG_SMP |
439 | { | |
440 | int max_cpu, i; | |
441 | ||
442 | if (v) { | |
443 | max_cpu = *v; | |
444 | if (max_cpu > NR_CPUS) | |
445 | max_cpu = NR_CPUS; | |
446 | } else { | |
447 | max_cpu = NR_CPUS; | |
448 | } | |
449 | for (i = 0; i < max_cpu; i++) | |
450 | cpu_set(i, cpu_possible_map); | |
451 | } | |
452 | #endif | |
453 | ||
43fdf274 | 454 | mdesc_release(hp); |
5cbc3073 DM |
455 | } |
456 | ||
457 | static int inline find_in_proplist(const char *list, const char *match, int len) | |
458 | { | |
459 | while (len > 0) { | |
460 | int l; | |
461 | ||
462 | if (!strcmp(list, match)) | |
463 | return 1; | |
464 | l = strlen(list) + 1; | |
465 | list += l; | |
466 | len -= l; | |
467 | } | |
468 | return 0; | |
469 | } | |
470 | ||
4f0234f4 DM |
471 | static void __devinit fill_in_one_cache(cpuinfo_sparc *c, |
472 | struct mdesc_handle *hp, | |
473 | u64 mp) | |
5cbc3073 | 474 | { |
43fdf274 DM |
475 | const u64 *level = mdesc_get_property(hp, mp, "level", NULL); |
476 | const u64 *size = mdesc_get_property(hp, mp, "size", NULL); | |
477 | const u64 *line_size = mdesc_get_property(hp, mp, "line-size", NULL); | |
5cbc3073 DM |
478 | const char *type; |
479 | int type_len; | |
480 | ||
43fdf274 | 481 | type = mdesc_get_property(hp, mp, "type", &type_len); |
5cbc3073 DM |
482 | |
483 | switch (*level) { | |
484 | case 1: | |
485 | if (find_in_proplist(type, "instn", type_len)) { | |
486 | c->icache_size = *size; | |
487 | c->icache_line_size = *line_size; | |
488 | } else if (find_in_proplist(type, "data", type_len)) { | |
489 | c->dcache_size = *size; | |
490 | c->dcache_line_size = *line_size; | |
491 | } | |
492 | break; | |
493 | ||
494 | case 2: | |
495 | c->ecache_size = *size; | |
496 | c->ecache_line_size = *line_size; | |
497 | break; | |
498 | ||
499 | default: | |
500 | break; | |
501 | } | |
502 | ||
503 | if (*level == 1) { | |
43fdf274 | 504 | u64 a; |
5cbc3073 | 505 | |
43fdf274 DM |
506 | mdesc_for_each_arc(a, hp, mp, MDESC_ARC_TYPE_FWD) { |
507 | u64 target = mdesc_arc_target(hp, a); | |
508 | const char *name = mdesc_node_name(hp, target); | |
5cbc3073 | 509 | |
43fdf274 DM |
510 | if (!strcmp(name, "cache")) |
511 | fill_in_one_cache(c, hp, target); | |
5cbc3073 DM |
512 | } |
513 | } | |
514 | } | |
515 | ||
4f0234f4 DM |
516 | static void __devinit mark_core_ids(struct mdesc_handle *hp, u64 mp, |
517 | int core_id) | |
5cbc3073 | 518 | { |
43fdf274 | 519 | u64 a; |
5cbc3073 | 520 | |
43fdf274 DM |
521 | mdesc_for_each_arc(a, hp, mp, MDESC_ARC_TYPE_BACK) { |
522 | u64 t = mdesc_arc_target(hp, a); | |
523 | const char *name; | |
5cbc3073 DM |
524 | const u64 *id; |
525 | ||
43fdf274 DM |
526 | name = mdesc_node_name(hp, t); |
527 | if (!strcmp(name, "cpu")) { | |
528 | id = mdesc_get_property(hp, t, "id", NULL); | |
5cbc3073 DM |
529 | if (*id < NR_CPUS) |
530 | cpu_data(*id).core_id = core_id; | |
531 | } else { | |
43fdf274 | 532 | u64 j; |
5cbc3073 | 533 | |
43fdf274 DM |
534 | mdesc_for_each_arc(j, hp, t, MDESC_ARC_TYPE_BACK) { |
535 | u64 n = mdesc_arc_target(hp, j); | |
536 | const char *n_name; | |
5cbc3073 | 537 | |
43fdf274 DM |
538 | n_name = mdesc_node_name(hp, n); |
539 | if (strcmp(n_name, "cpu")) | |
5cbc3073 DM |
540 | continue; |
541 | ||
43fdf274 | 542 | id = mdesc_get_property(hp, n, "id", NULL); |
5cbc3073 DM |
543 | if (*id < NR_CPUS) |
544 | cpu_data(*id).core_id = core_id; | |
545 | } | |
546 | } | |
547 | } | |
548 | } | |
549 | ||
4f0234f4 | 550 | static void __devinit set_core_ids(struct mdesc_handle *hp) |
5cbc3073 | 551 | { |
5cbc3073 | 552 | int idx; |
43fdf274 | 553 | u64 mp; |
5cbc3073 DM |
554 | |
555 | idx = 1; | |
43fdf274 DM |
556 | mdesc_for_each_node_by_name(hp, mp, "cache") { |
557 | const u64 *level; | |
5cbc3073 DM |
558 | const char *type; |
559 | int len; | |
560 | ||
43fdf274 | 561 | level = mdesc_get_property(hp, mp, "level", NULL); |
5cbc3073 DM |
562 | if (*level != 1) |
563 | continue; | |
564 | ||
43fdf274 | 565 | type = mdesc_get_property(hp, mp, "type", &len); |
5cbc3073 DM |
566 | if (!find_in_proplist(type, "instn", len)) |
567 | continue; | |
568 | ||
43fdf274 | 569 | mark_core_ids(hp, mp, idx); |
5cbc3073 DM |
570 | |
571 | idx++; | |
572 | } | |
573 | } | |
574 | ||
4f0234f4 DM |
575 | static void __devinit mark_proc_ids(struct mdesc_handle *hp, u64 mp, |
576 | int proc_id) | |
f78eae2e | 577 | { |
43fdf274 | 578 | u64 a; |
f78eae2e | 579 | |
43fdf274 DM |
580 | mdesc_for_each_arc(a, hp, mp, MDESC_ARC_TYPE_BACK) { |
581 | u64 t = mdesc_arc_target(hp, a); | |
582 | const char *name; | |
f78eae2e DM |
583 | const u64 *id; |
584 | ||
43fdf274 DM |
585 | name = mdesc_node_name(hp, t); |
586 | if (strcmp(name, "cpu")) | |
f78eae2e DM |
587 | continue; |
588 | ||
43fdf274 | 589 | id = mdesc_get_property(hp, t, "id", NULL); |
f78eae2e DM |
590 | if (*id < NR_CPUS) |
591 | cpu_data(*id).proc_id = proc_id; | |
592 | } | |
593 | } | |
594 | ||
4f0234f4 DM |
595 | static void __devinit __set_proc_ids(struct mdesc_handle *hp, |
596 | const char *exec_unit_name) | |
f78eae2e | 597 | { |
f78eae2e | 598 | int idx; |
43fdf274 | 599 | u64 mp; |
f78eae2e DM |
600 | |
601 | idx = 0; | |
43fdf274 | 602 | mdesc_for_each_node_by_name(hp, mp, exec_unit_name) { |
f78eae2e DM |
603 | const char *type; |
604 | int len; | |
605 | ||
43fdf274 | 606 | type = mdesc_get_property(hp, mp, "type", &len); |
f78eae2e DM |
607 | if (!find_in_proplist(type, "int", len) && |
608 | !find_in_proplist(type, "integer", len)) | |
609 | continue; | |
610 | ||
43fdf274 | 611 | mark_proc_ids(hp, mp, idx); |
f78eae2e DM |
612 | |
613 | idx++; | |
614 | } | |
615 | } | |
616 | ||
4f0234f4 | 617 | static void __devinit set_proc_ids(struct mdesc_handle *hp) |
f78eae2e | 618 | { |
43fdf274 DM |
619 | __set_proc_ids(hp, "exec_unit"); |
620 | __set_proc_ids(hp, "exec-unit"); | |
f78eae2e DM |
621 | } |
622 | ||
4f0234f4 DM |
623 | static void __devinit get_one_mondo_bits(const u64 *p, unsigned int *mask, |
624 | unsigned char def) | |
5cbc3073 DM |
625 | { |
626 | u64 val; | |
627 | ||
628 | if (!p) | |
629 | goto use_default; | |
630 | val = *p; | |
631 | ||
632 | if (!val || val >= 64) | |
633 | goto use_default; | |
634 | ||
635 | *mask = ((1U << val) * 64U) - 1U; | |
636 | return; | |
637 | ||
638 | use_default: | |
639 | *mask = ((1U << def) * 64U) - 1U; | |
640 | } | |
641 | ||
4f0234f4 DM |
642 | static void __devinit get_mondo_data(struct mdesc_handle *hp, u64 mp, |
643 | struct trap_per_cpu *tb) | |
5cbc3073 DM |
644 | { |
645 | const u64 *val; | |
646 | ||
43fdf274 | 647 | val = mdesc_get_property(hp, mp, "q-cpu-mondo-#bits", NULL); |
5cbc3073 DM |
648 | get_one_mondo_bits(val, &tb->cpu_mondo_qmask, 7); |
649 | ||
43fdf274 | 650 | val = mdesc_get_property(hp, mp, "q-dev-mondo-#bits", NULL); |
5cbc3073 DM |
651 | get_one_mondo_bits(val, &tb->dev_mondo_qmask, 7); |
652 | ||
43fdf274 | 653 | val = mdesc_get_property(hp, mp, "q-resumable-#bits", NULL); |
5cbc3073 DM |
654 | get_one_mondo_bits(val, &tb->resum_qmask, 6); |
655 | ||
43fdf274 | 656 | val = mdesc_get_property(hp, mp, "q-nonresumable-#bits", NULL); |
5cbc3073 DM |
657 | get_one_mondo_bits(val, &tb->nonresum_qmask, 2); |
658 | } | |
659 | ||
4f0234f4 | 660 | void __devinit mdesc_fill_in_cpu_data(cpumask_t mask) |
5cbc3073 | 661 | { |
43fdf274 DM |
662 | struct mdesc_handle *hp = mdesc_grab(); |
663 | u64 mp; | |
5cbc3073 DM |
664 | |
665 | ncpus_probed = 0; | |
43fdf274 DM |
666 | mdesc_for_each_node_by_name(hp, mp, "cpu") { |
667 | const u64 *id = mdesc_get_property(hp, mp, "id", NULL); | |
668 | const u64 *cfreq = mdesc_get_property(hp, mp, "clock-frequency", NULL); | |
5cbc3073 DM |
669 | struct trap_per_cpu *tb; |
670 | cpuinfo_sparc *c; | |
5cbc3073 | 671 | int cpuid; |
43fdf274 | 672 | u64 a; |
5cbc3073 DM |
673 | |
674 | ncpus_probed++; | |
675 | ||
676 | cpuid = *id; | |
677 | ||
678 | #ifdef CONFIG_SMP | |
679 | if (cpuid >= NR_CPUS) | |
680 | continue; | |
4f0234f4 DM |
681 | if (!cpu_isset(cpuid, mask)) |
682 | continue; | |
5cbc3073 DM |
683 | #else |
684 | /* On uniprocessor we only want the values for the | |
685 | * real physical cpu the kernel booted onto, however | |
686 | * cpu_data() only has one entry at index 0. | |
687 | */ | |
688 | if (cpuid != real_hard_smp_processor_id()) | |
689 | continue; | |
690 | cpuid = 0; | |
691 | #endif | |
692 | ||
693 | c = &cpu_data(cpuid); | |
694 | c->clock_tick = *cfreq; | |
695 | ||
696 | tb = &trap_block[cpuid]; | |
43fdf274 | 697 | get_mondo_data(hp, mp, tb); |
5cbc3073 | 698 | |
43fdf274 DM |
699 | mdesc_for_each_arc(a, hp, mp, MDESC_ARC_TYPE_FWD) { |
700 | u64 j, t = mdesc_arc_target(hp, a); | |
701 | const char *t_name; | |
5cbc3073 | 702 | |
43fdf274 DM |
703 | t_name = mdesc_node_name(hp, t); |
704 | if (!strcmp(t_name, "cache")) { | |
705 | fill_in_one_cache(c, hp, t); | |
5cbc3073 DM |
706 | continue; |
707 | } | |
708 | ||
43fdf274 DM |
709 | mdesc_for_each_arc(j, hp, t, MDESC_ARC_TYPE_FWD) { |
710 | u64 n = mdesc_arc_target(hp, j); | |
711 | const char *n_name; | |
5cbc3073 | 712 | |
43fdf274 DM |
713 | n_name = mdesc_node_name(hp, n); |
714 | if (!strcmp(n_name, "cache")) | |
715 | fill_in_one_cache(c, hp, n); | |
5cbc3073 DM |
716 | } |
717 | } | |
718 | ||
719 | #ifdef CONFIG_SMP | |
720 | cpu_set(cpuid, cpu_present_map); | |
5cbc3073 DM |
721 | #endif |
722 | ||
723 | c->core_id = 0; | |
f78eae2e | 724 | c->proc_id = -1; |
5cbc3073 DM |
725 | } |
726 | ||
a2f9f6bb DM |
727 | #ifdef CONFIG_SMP |
728 | sparc64_multi_core = 1; | |
729 | #endif | |
730 | ||
43fdf274 DM |
731 | set_core_ids(hp); |
732 | set_proc_ids(hp); | |
5cbc3073 DM |
733 | |
734 | smp_fill_in_sib_core_maps(); | |
43fdf274 DM |
735 | |
736 | mdesc_release(hp); | |
5cbc3073 DM |
737 | } |
738 | ||
739 | void __init sun4v_mdesc_init(void) | |
740 | { | |
43fdf274 | 741 | struct mdesc_handle *hp; |
5cbc3073 | 742 | unsigned long len, real_len, status; |
4f0234f4 | 743 | cpumask_t mask; |
5cbc3073 DM |
744 | |
745 | (void) sun4v_mach_desc(0UL, 0UL, &len); | |
746 | ||
747 | printk("MDESC: Size is %lu bytes.\n", len); | |
748 | ||
43fdf274 DM |
749 | hp = mdesc_alloc(len, &bootmem_mdesc_memops); |
750 | if (hp == NULL) { | |
751 | prom_printf("MDESC: alloc of %lu bytes failed.\n", len); | |
752 | prom_halt(); | |
753 | } | |
5cbc3073 | 754 | |
43fdf274 | 755 | status = sun4v_mach_desc(__pa(&hp->mdesc), len, &real_len); |
5cbc3073 DM |
756 | if (status != HV_EOK || real_len > len) { |
757 | prom_printf("sun4v_mach_desc fails, err(%lu), " | |
758 | "len(%lu), real_len(%lu)\n", | |
759 | status, len, real_len); | |
43fdf274 | 760 | mdesc_free(hp); |
5cbc3073 DM |
761 | prom_halt(); |
762 | } | |
763 | ||
43fdf274 | 764 | cur_mdesc = hp; |
5cbc3073 DM |
765 | |
766 | report_platform_properties(); | |
4f0234f4 DM |
767 | |
768 | cpus_setall(mask); | |
769 | mdesc_fill_in_cpu_data(mask); | |
5cbc3073 | 770 | } |