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26#include <linux/fs.h>
27#include <linux/slab.h>
28#include <linux/vmalloc.h>
29#include <linux/seq_file.h>
30#include <linux/miscdevice.h>
31#include <linux/utsname.h>
32#include <linux/cpumask.h>
33#include <linux/smp_lock.h>
34#include <linux/nodemask.h>
35#include <linux/smp.h>
36#include <linux/mutex.h>
37
38#include <asm/processor.h>
39#include <asm/topology.h>
40#include <asm/uaccess.h>
41#include <asm/sal.h>
42#include <asm/sn/io.h>
43#include <asm/sn/sn_sal.h>
44#include <asm/sn/module.h>
45#include <asm/sn/geo.h>
46#include <asm/sn/sn2/sn_hwperf.h>
47#include <asm/sn/addrs.h>
48
49static void *sn_hwperf_salheap = NULL;
50static int sn_hwperf_obj_cnt = 0;
51static nasid_t sn_hwperf_master_nasid = INVALID_NASID;
52static int sn_hwperf_init(void);
53static DEFINE_MUTEX(sn_hwperf_init_mutex);
54
55#define cnode_possible(n) ((n) < num_cnodes)
56
57static int sn_hwperf_enum_objects(int *nobj, struct sn_hwperf_object_info **ret)
58{
59 int e;
60 u64 sz;
61 struct sn_hwperf_object_info *objbuf = NULL;
62
63 if ((e = sn_hwperf_init()) < 0) {
64 printk(KERN_ERR "sn_hwperf_init failed: err %d\n", e);
65 goto out;
66 }
67
68 sz = sn_hwperf_obj_cnt * sizeof(struct sn_hwperf_object_info);
69 objbuf = vmalloc(sz);
70 if (objbuf == NULL) {
71 printk("sn_hwperf_enum_objects: vmalloc(%d) failed\n", (int)sz);
72 e = -ENOMEM;
73 goto out;
74 }
75
76 e = ia64_sn_hwperf_op(sn_hwperf_master_nasid, SN_HWPERF_ENUM_OBJECTS,
77 0, sz, (u64) objbuf, 0, 0, NULL);
78 if (e != SN_HWPERF_OP_OK) {
79 e = -EINVAL;
80 vfree(objbuf);
81 }
82
83out:
84 *nobj = sn_hwperf_obj_cnt;
85 *ret = objbuf;
86 return e;
87}
88
89static int sn_hwperf_location_to_bpos(char *location,
90 int *rack, int *bay, int *slot, int *slab)
91{
92 char type;
93
94
95 if (sscanf(location, "%03d%c%02d#%d",
96 rack, &type, bay, slab) == 4)
97 *slot = 0;
98 else
99 if (sscanf(location, "%03d%c%02d^%02d#%d",
100 rack, &type, bay, slot, slab) != 5)
101 return -1;
102
103 return 0;
104}
105
106static int sn_hwperf_geoid_to_cnode(char *location)
107{
108 int cnode;
109 geoid_t geoid;
110 moduleid_t module_id;
111 int rack, bay, slot, slab;
112 int this_rack, this_bay, this_slot, this_slab;
113
114 if (sn_hwperf_location_to_bpos(location, &rack, &bay, &slot, &slab))
115 return -1;
116
117
118
119
120
121 for (cnode = 0; cnode < num_cnodes; cnode++) {
122 geoid = cnodeid_get_geoid(cnode);
123 module_id = geo_module(geoid);
124 this_rack = MODULE_GET_RACK(module_id);
125 this_bay = MODULE_GET_BPOS(module_id);
126 this_slot = geo_slot(geoid);
127 this_slab = geo_slab(geoid);
128 if (rack == this_rack && bay == this_bay &&
129 slot == this_slot && slab == this_slab) {
130 break;
131 }
132 }
133
134 return cnode_possible(cnode) ? cnode : -1;
135}
136
137static int sn_hwperf_obj_to_cnode(struct sn_hwperf_object_info * obj)
138{
139 if (!SN_HWPERF_IS_NODE(obj) && !SN_HWPERF_IS_IONODE(obj))
140 BUG();
141 if (SN_HWPERF_FOREIGN(obj))
142 return -1;
143 return sn_hwperf_geoid_to_cnode(obj->location);
144}
145
146static int sn_hwperf_generic_ordinal(struct sn_hwperf_object_info *obj,
147 struct sn_hwperf_object_info *objs)
148{
149 int ordinal;
150 struct sn_hwperf_object_info *p;
151
152 for (ordinal=0, p=objs; p != obj; p++) {
153 if (SN_HWPERF_FOREIGN(p))
154 continue;
155 if (SN_HWPERF_SAME_OBJTYPE(p, obj))
156 ordinal++;
157 }
158
159 return ordinal;
160}
161
162static const char *slabname_node = "node";
163static const char *slabname_ionode = "ionode";
164static const char *slabname_router = "router";
165static const char *slabname_other = "other";
166
167static const char *sn_hwperf_get_slabname(struct sn_hwperf_object_info *obj,
168 struct sn_hwperf_object_info *objs, int *ordinal)
169{
170 int isnode;
171 const char *slabname = slabname_other;
172
173 if ((isnode = SN_HWPERF_IS_NODE(obj)) || SN_HWPERF_IS_IONODE(obj)) {
174 slabname = isnode ? slabname_node : slabname_ionode;
175 *ordinal = sn_hwperf_obj_to_cnode(obj);
176 }
177 else {
178 *ordinal = sn_hwperf_generic_ordinal(obj, objs);
179 if (SN_HWPERF_IS_ROUTER(obj))
180 slabname = slabname_router;
181 }
182
183 return slabname;
184}
185
186static void print_pci_topology(struct seq_file *s)
187{
188 char *p;
189 size_t sz;
190 int e;
191
192 for (sz = PAGE_SIZE; sz < 16 * PAGE_SIZE; sz += PAGE_SIZE) {
193 if (!(p = kmalloc(sz, GFP_KERNEL)))
194 break;
195 e = ia64_sn_ioif_get_pci_topology(__pa(p), sz);
196 if (e == SALRET_OK)
197 seq_puts(s, p);
198 kfree(p);
199 if (e == SALRET_OK || e == SALRET_NOT_IMPLEMENTED)
200 break;
201 }
202}
203
204static inline int sn_hwperf_has_cpus(cnodeid_t node)
205{
206 return node < MAX_NUMNODES && node_online(node) && nr_cpus_node(node);
207}
208
209static inline int sn_hwperf_has_mem(cnodeid_t node)
210{
211 return node < MAX_NUMNODES && node_online(node) && NODE_DATA(node)->node_present_pages;
212}
213
214static struct sn_hwperf_object_info *
215sn_hwperf_findobj_id(struct sn_hwperf_object_info *objbuf,
216 int nobj, int id)
217{
218 int i;
219 struct sn_hwperf_object_info *p = objbuf;
220
221 for (i=0; i < nobj; i++, p++) {
222 if (p->id == id)
223 return p;
224 }
225
226 return NULL;
227
228}
229
230static int sn_hwperf_get_nearest_node_objdata(struct sn_hwperf_object_info *objbuf,
231 int nobj, cnodeid_t node, cnodeid_t *near_mem_node, cnodeid_t *near_cpu_node)
232{
233 int e;
234 struct sn_hwperf_object_info *nodeobj = NULL;
235 struct sn_hwperf_object_info *op;
236 struct sn_hwperf_object_info *dest;
237 struct sn_hwperf_object_info *router;
238 struct sn_hwperf_port_info ptdata[16];
239 int sz, i, j;
240 cnodeid_t c;
241 int found_mem = 0;
242 int found_cpu = 0;
243
244 if (!cnode_possible(node))
245 return -EINVAL;
246
247 if (sn_hwperf_has_cpus(node)) {
248 if (near_cpu_node)
249 *near_cpu_node = node;
250 found_cpu++;
251 }
252
253 if (sn_hwperf_has_mem(node)) {
254 if (near_mem_node)
255 *near_mem_node = node;
256 found_mem++;
257 }
258
259 if (found_cpu && found_mem)
260 return 0;
261
262
263 for (i=0, op=objbuf; i < nobj; i++, op++) {
264 if (!SN_HWPERF_IS_NODE(op) && !SN_HWPERF_IS_IONODE(op))
265 continue;
266 if (node == sn_hwperf_obj_to_cnode(op)) {
267 nodeobj = op;
268 break;
269 }
270 }
271 if (!nodeobj) {
272 e = -ENOENT;
273 goto err;
274 }
275
276
277 sz = op->ports * sizeof(struct sn_hwperf_port_info);
278 BUG_ON(sz > sizeof(ptdata));
279 e = ia64_sn_hwperf_op(sn_hwperf_master_nasid,
280 SN_HWPERF_ENUM_PORTS, nodeobj->id, sz,
281 (u64)&ptdata, 0, 0, NULL);
282 if (e != SN_HWPERF_OP_OK) {
283 e = -EINVAL;
284 goto err;
285 }
286
287
288 for (router=NULL, j=0; j < op->ports; j++) {
289 dest = sn_hwperf_findobj_id(objbuf, nobj, ptdata[j].conn_id);
290 if (dest && SN_HWPERF_IS_ROUTER(dest))
291 router = dest;
292 if (!dest || SN_HWPERF_FOREIGN(dest) ||
293 !SN_HWPERF_IS_NODE(dest) || SN_HWPERF_IS_IONODE(dest)) {
294 continue;
295 }
296 c = sn_hwperf_obj_to_cnode(dest);
297 if (!found_cpu && sn_hwperf_has_cpus(c)) {
298 if (near_cpu_node)
299 *near_cpu_node = c;
300 found_cpu++;
301 }
302 if (!found_mem && sn_hwperf_has_mem(c)) {
303 if (near_mem_node)
304 *near_mem_node = c;
305 found_mem++;
306 }
307 }
308
309 if (router && (!found_cpu || !found_mem)) {
310
311 sz = router->ports * sizeof(struct sn_hwperf_port_info);
312 BUG_ON(sz > sizeof(ptdata));
313 e = ia64_sn_hwperf_op(sn_hwperf_master_nasid,
314 SN_HWPERF_ENUM_PORTS, router->id, sz,
315 (u64)&ptdata, 0, 0, NULL);
316 if (e != SN_HWPERF_OP_OK) {
317 e = -EINVAL;
318 goto err;
319 }
320 for (j=0; j < router->ports; j++) {
321 dest = sn_hwperf_findobj_id(objbuf, nobj,
322 ptdata[j].conn_id);
323 if (!dest || dest->id == node ||
324 SN_HWPERF_FOREIGN(dest) ||
325 !SN_HWPERF_IS_NODE(dest) ||
326 SN_HWPERF_IS_IONODE(dest)) {
327 continue;
328 }
329 c = sn_hwperf_obj_to_cnode(dest);
330 if (!found_cpu && sn_hwperf_has_cpus(c)) {
331 if (near_cpu_node)
332 *near_cpu_node = c;
333 found_cpu++;
334 }
335 if (!found_mem && sn_hwperf_has_mem(c)) {
336 if (near_mem_node)
337 *near_mem_node = c;
338 found_mem++;
339 }
340 if (found_cpu && found_mem)
341 break;
342 }
343 }
344
345 if (!found_cpu || !found_mem) {
346
347 for (i=0, op=objbuf; i < nobj; i++, op++) {
348 if (SN_HWPERF_FOREIGN(op) ||
349 SN_HWPERF_IS_IONODE(op) ||
350 !SN_HWPERF_IS_NODE(op)) {
351 continue;
352 }
353 c = sn_hwperf_obj_to_cnode(op);
354 if (!found_cpu && sn_hwperf_has_cpus(c)) {
355 if (near_cpu_node)
356 *near_cpu_node = c;
357 found_cpu++;
358 }
359 if (!found_mem && sn_hwperf_has_mem(c)) {
360 if (near_mem_node)
361 *near_mem_node = c;
362 found_mem++;
363 }
364 if (found_cpu && found_mem)
365 break;
366 }
367 }
368
369 if (!found_cpu || !found_mem)
370 e = -ENODATA;
371
372err:
373 return e;
374}
375
376
377static int sn_topology_show(struct seq_file *s, void *d)
378{
379 int sz;
380 int pt;
381 int e = 0;
382 int i;
383 int j;
384 const char *slabname;
385 int ordinal;
386 char slice;
387 struct cpuinfo_ia64 *c;
388 struct sn_hwperf_port_info *ptdata;
389 struct sn_hwperf_object_info *p;
390 struct sn_hwperf_object_info *obj = d;
391 struct sn_hwperf_object_info *objs = s->private;
392 u8 shubtype;
393 u8 system_size;
394 u8 sharing_size;
395 u8 partid;
396 u8 coher;
397 u8 nasid_shift;
398 u8 region_size;
399 u16 nasid_mask;
400 int nasid_msb;
401
402 if (obj == objs) {
403 seq_printf(s, "# sn_topology version 2\n");
404 seq_printf(s, "# objtype ordinal location partition"
405 " [attribute value [, ...]]\n");
406
407 if (ia64_sn_get_sn_info(0,
408 &shubtype, &nasid_mask, &nasid_shift, &system_size,
409 &sharing_size, &partid, &coher, ®ion_size))
410 BUG();
411 for (nasid_msb=63; nasid_msb > 0; nasid_msb--) {
412 if (((u64)nasid_mask << nasid_shift) & (1ULL << nasid_msb))
413 break;
414 }
415 seq_printf(s, "partition %u %s local "
416 "shubtype %s, "
417 "nasid_mask 0x%016llx, "
418 "nasid_bits %d:%d, "
419 "system_size %d, "
420 "sharing_size %d, "
421 "coherency_domain %d, "
422 "region_size %d\n",
423
424 partid, utsname()->nodename,
425 shubtype ? "shub2" : "shub1",
426 (u64)nasid_mask << nasid_shift, nasid_msb, nasid_shift,
427 system_size, sharing_size, coher, region_size);
428
429 print_pci_topology(s);
430 }
431
432 if (SN_HWPERF_FOREIGN(obj)) {
433
434 return 0;
435 }
436
437 for (i = 0; i < SN_HWPERF_MAXSTRING && obj->name[i]; i++) {
438 if (obj->name[i] == ' ')
439 obj->name[i] = '_';
440 }
441
442 slabname = sn_hwperf_get_slabname(obj, objs, &ordinal);
443 seq_printf(s, "%s %d %s %s asic %s", slabname, ordinal, obj->location,
444 obj->sn_hwp_this_part ? "local" : "shared", obj->name);
445
446 if (ordinal < 0 || (!SN_HWPERF_IS_NODE(obj) && !SN_HWPERF_IS_IONODE(obj)))
447 seq_putc(s, '\n');
448 else {
449 cnodeid_t near_mem = -1;
450 cnodeid_t near_cpu = -1;
451
452 seq_printf(s, ", nasid 0x%x", cnodeid_to_nasid(ordinal));
453
454 if (sn_hwperf_get_nearest_node_objdata(objs, sn_hwperf_obj_cnt,
455 ordinal, &near_mem, &near_cpu) == 0) {
456 seq_printf(s, ", near_mem_nodeid %d, near_cpu_nodeid %d",
457 near_mem, near_cpu);
458 }
459
460 if (!SN_HWPERF_IS_IONODE(obj)) {
461 for_each_online_node(i) {
462 seq_printf(s, i ? ":%d" : ", dist %d",
463 node_distance(ordinal, i));
464 }
465 }
466
467 seq_putc(s, '\n');
468
469
470
471
472 if (!SN_HWPERF_IS_IONODE(obj)) {
473 for_each_cpu_and(i, cpu_online_mask,
474 cpumask_of_node(ordinal)) {
475 slice = 'a' + cpuid_to_slice(i);
476 c = cpu_data(i);
477 seq_printf(s, "cpu %d %s%c local"
478 " freq %luMHz, arch ia64",
479 i, obj->location, slice,
480 c->proc_freq / 1000000);
481 for_each_online_cpu(j) {
482 seq_printf(s, j ? ":%d" : ", dist %d",
483 node_distance(
484 cpu_to_node(i),
485 cpu_to_node(j)));
486 }
487 seq_putc(s, '\n');
488 }
489 }
490 }
491
492 if (obj->ports) {
493
494
495
496 sz = obj->ports * sizeof(struct sn_hwperf_port_info);
497 if ((ptdata = kmalloc(sz, GFP_KERNEL)) == NULL)
498 return -ENOMEM;
499 e = ia64_sn_hwperf_op(sn_hwperf_master_nasid,
500 SN_HWPERF_ENUM_PORTS, obj->id, sz,
501 (u64) ptdata, 0, 0, NULL);
502 if (e != SN_HWPERF_OP_OK)
503 return -EINVAL;
504 for (ordinal=0, p=objs; p != obj; p++) {
505 if (!SN_HWPERF_FOREIGN(p))
506 ordinal += p->ports;
507 }
508 for (pt = 0; pt < obj->ports; pt++) {
509 for (p = objs, i = 0; i < sn_hwperf_obj_cnt; i++, p++) {
510 if (ptdata[pt].conn_id == p->id) {
511 break;
512 }
513 }
514 seq_printf(s, "numalink %d %s-%d",
515 ordinal+pt, obj->location, ptdata[pt].port);
516
517 if (i >= sn_hwperf_obj_cnt) {
518
519 seq_puts(s, " local endpoint disconnected"
520 ", protocol unknown\n");
521 continue;
522 }
523
524 if (obj->sn_hwp_this_part && p->sn_hwp_this_part)
525
526 seq_puts(s, " local");
527 else if (SN_HWPERF_FOREIGN(p))
528
529 seq_puts(s, " foreign");
530 else
531
532 seq_puts(s, " shared");
533
534
535
536
537
538
539
540 seq_printf(s, " endpoint %s-%d, protocol %s\n",
541 p->location, ptdata[pt].conn_port,
542 (SN_HWPERF_IS_NL3ROUTER(obj) ||
543 SN_HWPERF_IS_NL3ROUTER(p)) ? "LLP3" : "LLP4");
544 }
545 kfree(ptdata);
546 }
547
548 return 0;
549}
550
551static void *sn_topology_start(struct seq_file *s, loff_t * pos)
552{
553 struct sn_hwperf_object_info *objs = s->private;
554
555 if (*pos < sn_hwperf_obj_cnt)
556 return (void *)(objs + *pos);
557
558 return NULL;
559}
560
561static void *sn_topology_next(struct seq_file *s, void *v, loff_t * pos)
562{
563 ++*pos;
564 return sn_topology_start(s, pos);
565}
566
567static void sn_topology_stop(struct seq_file *m, void *v)
568{
569 return;
570}
571
572
573
574
575static const struct seq_operations sn_topology_seq_ops = {
576 .start = sn_topology_start,
577 .next = sn_topology_next,
578 .stop = sn_topology_stop,
579 .show = sn_topology_show
580};
581
582struct sn_hwperf_op_info {
583 u64 op;
584 struct sn_hwperf_ioctl_args *a;
585 void *p;
586 int *v0;
587 int ret;
588};
589
590static void sn_hwperf_call_sal(void *info)
591{
592 struct sn_hwperf_op_info *op_info = info;
593 int r;
594
595 r = ia64_sn_hwperf_op(sn_hwperf_master_nasid, op_info->op,
596 op_info->a->arg, op_info->a->sz,
597 (u64) op_info->p, 0, 0, op_info->v0);
598 op_info->ret = r;
599}
600
601static int sn_hwperf_op_cpu(struct sn_hwperf_op_info *op_info)
602{
603 u32 cpu;
604 u32 use_ipi;
605 int r = 0;
606 cpumask_t save_allowed;
607
608 cpu = (op_info->a->arg & SN_HWPERF_ARG_CPU_MASK) >> 32;
609 use_ipi = op_info->a->arg & SN_HWPERF_ARG_USE_IPI_MASK;
610 op_info->a->arg &= SN_HWPERF_ARG_OBJID_MASK;
611
612 if (cpu != SN_HWPERF_ARG_ANY_CPU) {
613 if (cpu >= nr_cpu_ids || !cpu_online(cpu)) {
614 r = -EINVAL;
615 goto out;
616 }
617 }
618
619 if (cpu == SN_HWPERF_ARG_ANY_CPU || cpu == get_cpu()) {
620
621 sn_hwperf_call_sal(op_info);
622 }
623 else {
624 if (use_ipi) {
625
626 smp_call_function_single(cpu, sn_hwperf_call_sal,
627 op_info, 1);
628 }
629 else {
630
631 save_allowed = current->cpus_allowed;
632 set_cpus_allowed(current, cpumask_of_cpu(cpu));
633 sn_hwperf_call_sal(op_info);
634 set_cpus_allowed(current, save_allowed);
635 }
636 }
637 r = op_info->ret;
638
639out:
640 return r;
641}
642
643
644static int sn_hwperf_map_err(int hwperf_err)
645{
646 int e;
647
648 switch(hwperf_err) {
649 case SN_HWPERF_OP_OK:
650 e = 0;
651 break;
652
653 case SN_HWPERF_OP_NOMEM:
654 e = -ENOMEM;
655 break;
656
657 case SN_HWPERF_OP_NO_PERM:
658 e = -EPERM;
659 break;
660
661 case SN_HWPERF_OP_IO_ERROR:
662 e = -EIO;
663 break;
664
665 case SN_HWPERF_OP_BUSY:
666 e = -EBUSY;
667 break;
668
669 case SN_HWPERF_OP_RECONFIGURE:
670 e = -EAGAIN;
671 break;
672
673 case SN_HWPERF_OP_INVAL:
674 default:
675 e = -EINVAL;
676 break;
677 }
678
679 return e;
680}
681
682
683
684
685static int
686sn_hwperf_ioctl(struct inode *in, struct file *fp, u32 op, unsigned long arg)
687{
688 struct sn_hwperf_ioctl_args a;
689 struct cpuinfo_ia64 *cdata;
690 struct sn_hwperf_object_info *objs;
691 struct sn_hwperf_object_info *cpuobj;
692 struct sn_hwperf_op_info op_info;
693 void *p = NULL;
694 int nobj;
695 char slice;
696 int node;
697 int r;
698 int v0;
699 int i;
700 int j;
701
702 unlock_kernel();
703
704
705 if ((op & SN_HWPERF_OP_MASK) < 10) {
706 r = -EINVAL;
707 goto error;
708 }
709 r = copy_from_user(&a, (const void __user *)arg,
710 sizeof(struct sn_hwperf_ioctl_args));
711 if (r != 0) {
712 r = -EFAULT;
713 goto error;
714 }
715
716
717
718
719
720
721 if (a.ptr) {
722 p = vmalloc(a.sz);
723 if (!p) {
724 r = -ENOMEM;
725 goto error;
726 }
727 }
728
729 if (op & SN_HWPERF_OP_MEM_COPYIN) {
730 r = copy_from_user(p, (const void __user *)a.ptr, a.sz);
731 if (r != 0) {
732 r = -EFAULT;
733 goto error;
734 }
735 }
736
737 switch (op) {
738 case SN_HWPERF_GET_CPU_INFO:
739 if (a.sz == sizeof(u64)) {
740
741 *(u64 *) p = (u64) num_online_cpus() *
742 sizeof(struct sn_hwperf_object_info);
743 } else
744 if (a.sz < num_online_cpus() * sizeof(struct sn_hwperf_object_info)) {
745 r = -ENOMEM;
746 goto error;
747 } else
748 if ((r = sn_hwperf_enum_objects(&nobj, &objs)) == 0) {
749 int cpuobj_index = 0;
750
751 memset(p, 0, a.sz);
752 for (i = 0; i < nobj; i++) {
753 if (!SN_HWPERF_IS_NODE(objs + i))
754 continue;
755 node = sn_hwperf_obj_to_cnode(objs + i);
756 for_each_online_cpu(j) {
757 if (node != cpu_to_node(j))
758 continue;
759 cpuobj = (struct sn_hwperf_object_info *) p + cpuobj_index++;
760 slice = 'a' + cpuid_to_slice(j);
761 cdata = cpu_data(j);
762 cpuobj->id = j;
763 snprintf(cpuobj->name,
764 sizeof(cpuobj->name),
765 "CPU %luMHz %s",
766 cdata->proc_freq / 1000000,
767 cdata->vendor);
768 snprintf(cpuobj->location,
769 sizeof(cpuobj->location),
770 "%s%c", objs[i].location,
771 slice);
772 }
773 }
774
775 vfree(objs);
776 }
777 break;
778
779 case SN_HWPERF_GET_NODE_NASID:
780 if (a.sz != sizeof(u64) ||
781 (node = a.arg) < 0 || !cnode_possible(node)) {
782 r = -EINVAL;
783 goto error;
784 }
785 *(u64 *)p = (u64)cnodeid_to_nasid(node);
786 break;
787
788 case SN_HWPERF_GET_OBJ_NODE:
789 i = a.arg;
790 if (a.sz != sizeof(u64) || i < 0) {
791 r = -EINVAL;
792 goto error;
793 }
794 if ((r = sn_hwperf_enum_objects(&nobj, &objs)) == 0) {
795 if (i >= nobj) {
796 r = -EINVAL;
797 vfree(objs);
798 goto error;
799 }
800 if (objs[i].id != a.arg) {
801 for (i = 0; i < nobj; i++) {
802 if (objs[i].id == a.arg)
803 break;
804 }
805 }
806 if (i == nobj) {
807 r = -EINVAL;
808 vfree(objs);
809 goto error;
810 }
811
812 if (!SN_HWPERF_IS_NODE(objs + i) &&
813 !SN_HWPERF_IS_IONODE(objs + i)) {
814 r = -ENOENT;
815 vfree(objs);
816 goto error;
817 }
818
819 *(u64 *)p = (u64)sn_hwperf_obj_to_cnode(objs + i);
820 vfree(objs);
821 }
822 break;
823
824 case SN_HWPERF_GET_MMRS:
825 case SN_HWPERF_SET_MMRS:
826 case SN_HWPERF_OBJECT_DISTANCE:
827 op_info.p = p;
828 op_info.a = &a;
829 op_info.v0 = &v0;
830 op_info.op = op;
831 r = sn_hwperf_op_cpu(&op_info);
832 if (r) {
833 r = sn_hwperf_map_err(r);
834 a.v0 = v0;
835 goto error;
836 }
837 break;
838
839 default:
840
841 r = ia64_sn_hwperf_op(sn_hwperf_master_nasid, op,
842 a.arg, a.sz, (u64) p, 0, 0, &v0);
843 if (r) {
844 r = sn_hwperf_map_err(r);
845 goto error;
846 }
847 a.v0 = v0;
848 break;
849 }
850
851 if (op & SN_HWPERF_OP_MEM_COPYOUT) {
852 r = copy_to_user((void __user *)a.ptr, p, a.sz);
853 if (r != 0) {
854 r = -EFAULT;
855 goto error;
856 }
857 }
858
859error:
860 vfree(p);
861
862 lock_kernel();
863 return r;
864}
865
866static const struct file_operations sn_hwperf_fops = {
867 .ioctl = sn_hwperf_ioctl,
868};
869
870static struct miscdevice sn_hwperf_dev = {
871 MISC_DYNAMIC_MINOR,
872 "sn_hwperf",
873 &sn_hwperf_fops
874};
875
876static int sn_hwperf_init(void)
877{
878 u64 v;
879 int salr;
880 int e = 0;
881
882
883 mutex_lock(&sn_hwperf_init_mutex);
884
885 if (sn_hwperf_salheap) {
886 mutex_unlock(&sn_hwperf_init_mutex);
887 return e;
888 }
889
890
891
892
893
894 sn_hwperf_master_nasid = (nasid_t) ia64_sn_get_console_nasid();
895
896
897
898
899
900 salr = ia64_sn_hwperf_op(sn_hwperf_master_nasid,
901 (u64) SN_HWPERF_GET_HEAPSIZE, 0,
902 (u64) sizeof(u64), (u64) &v, 0, 0, NULL);
903 if (salr != SN_HWPERF_OP_OK) {
904 e = -EINVAL;
905 goto out;
906 }
907
908 if ((sn_hwperf_salheap = vmalloc(v)) == NULL) {
909 e = -ENOMEM;
910 goto out;
911 }
912 salr = ia64_sn_hwperf_op(sn_hwperf_master_nasid,
913 SN_HWPERF_INSTALL_HEAP, 0, v,
914 (u64) sn_hwperf_salheap, 0, 0, NULL);
915 if (salr != SN_HWPERF_OP_OK) {
916 e = -EINVAL;
917 goto out;
918 }
919
920 salr = ia64_sn_hwperf_op(sn_hwperf_master_nasid,
921 SN_HWPERF_OBJECT_COUNT, 0,
922 sizeof(u64), (u64) &v, 0, 0, NULL);
923 if (salr != SN_HWPERF_OP_OK) {
924 e = -EINVAL;
925 goto out;
926 }
927 sn_hwperf_obj_cnt = (int)v;
928
929out:
930 if (e < 0 && sn_hwperf_salheap) {
931 vfree(sn_hwperf_salheap);
932 sn_hwperf_salheap = NULL;
933 sn_hwperf_obj_cnt = 0;
934 }
935 mutex_unlock(&sn_hwperf_init_mutex);
936 return e;
937}
938
939int sn_topology_open(struct inode *inode, struct file *file)
940{
941 int e;
942 struct seq_file *seq;
943 struct sn_hwperf_object_info *objbuf;
944 int nobj;
945
946 if ((e = sn_hwperf_enum_objects(&nobj, &objbuf)) == 0) {
947 e = seq_open(file, &sn_topology_seq_ops);
948 seq = file->private_data;
949 seq->private = objbuf;
950 }
951
952 return e;
953}
954
955int sn_topology_release(struct inode *inode, struct file *file)
956{
957 struct seq_file *seq = file->private_data;
958
959 vfree(seq->private);
960 return seq_release(inode, file);
961}
962
963int sn_hwperf_get_nearest_node(cnodeid_t node,
964 cnodeid_t *near_mem_node, cnodeid_t *near_cpu_node)
965{
966 int e;
967 int nobj;
968 struct sn_hwperf_object_info *objbuf;
969
970 if ((e = sn_hwperf_enum_objects(&nobj, &objbuf)) == 0) {
971 e = sn_hwperf_get_nearest_node_objdata(objbuf, nobj,
972 node, near_mem_node, near_cpu_node);
973 vfree(objbuf);
974 }
975
976 return e;
977}
978
979static int __devinit sn_hwperf_misc_register_init(void)
980{
981 int e;
982
983 if (!ia64_platform_is("sn2"))
984 return 0;
985
986 sn_hwperf_init();
987
988
989
990
991
992
993 if ((e = misc_register(&sn_hwperf_dev)) != 0) {
994 printk(KERN_ERR "sn_hwperf_misc_register_init: failed to "
995 "register misc device for \"%s\"\n", sn_hwperf_dev.name);
996 }
997
998 return e;
999}
1000
1001device_initcall(sn_hwperf_misc_register_init);
1002EXPORT_SYMBOL(sn_hwperf_get_nearest_node);
1003
