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22
23#undef DEBUG
24
25#include <linux/kernel.h>
26#include <linux/dma-mapping.h>
27#include <linux/console.h>
28#include <linux/export.h>
29#include <linux/jump_label.h>
30#include <asm/processor.h>
31#include <asm/mmu.h>
32#include <asm/page.h>
33#include <asm/pgtable.h>
34#include <asm/machdep.h>
35#include <asm/mmu_context.h>
36#include <asm/iommu.h>
37#include <asm/tlbflush.h>
38#include <asm/tlb.h>
39#include <asm/prom.h>
40#include <asm/cputable.h>
41#include <asm/udbg.h>
42#include <asm/smp.h>
43#include <asm/trace.h>
44#include <asm/firmware.h>
45#include <asm/plpar_wrappers.h>
46#include <asm/kexec.h>
47#include <asm/fadump.h>
48#include <asm/asm-prototypes.h>
49
50#include "pseries.h"
51
52
53#define HBR_REQUEST 0x4000000000000000UL
54#define HBR_RESPONSE 0x8000000000000000UL
55#define HBR_END 0xc000000000000000UL
56#define HBR_AVPN 0x0200000000000000UL
57#define HBR_ANDCOND 0x0100000000000000UL
58
59
60
61EXPORT_SYMBOL(plpar_hcall);
62EXPORT_SYMBOL(plpar_hcall9);
63EXPORT_SYMBOL(plpar_hcall_norets);
64
65void vpa_init(int cpu)
66{
67 int hwcpu = get_hard_smp_processor_id(cpu);
68 unsigned long addr;
69 long ret;
70 struct paca_struct *pp;
71 struct dtl_entry *dtl;
72
73
74
75
76
77 WARN_ON(cpu != smp_processor_id());
78
79 if (cpu_has_feature(CPU_FTR_ALTIVEC))
80 lppaca_of(cpu).vmxregs_in_use = 1;
81
82 if (cpu_has_feature(CPU_FTR_ARCH_207S))
83 lppaca_of(cpu).ebb_regs_in_use = 1;
84
85 addr = __pa(&lppaca_of(cpu));
86 ret = register_vpa(hwcpu, addr);
87
88 if (ret) {
89 pr_err("WARNING: VPA registration for cpu %d (hw %d) of area "
90 "%lx failed with %ld\n", cpu, hwcpu, addr, ret);
91 return;
92 }
93
94#ifdef CONFIG_PPC_STD_MMU_64
95
96
97
98
99 if (!radix_enabled() && firmware_has_feature(FW_FEATURE_SPLPAR)) {
100 addr = __pa(paca[cpu].slb_shadow_ptr);
101 ret = register_slb_shadow(hwcpu, addr);
102 if (ret)
103 pr_err("WARNING: SLB shadow buffer registration for "
104 "cpu %d (hw %d) of area %lx failed with %ld\n",
105 cpu, hwcpu, addr, ret);
106 }
107#endif
108
109
110
111
112 pp = &paca[cpu];
113 dtl = pp->dispatch_log;
114 if (dtl) {
115 pp->dtl_ridx = 0;
116 pp->dtl_curr = dtl;
117 lppaca_of(cpu).dtl_idx = 0;
118
119
120 dtl->enqueue_to_dispatch_time = cpu_to_be32(DISPATCH_LOG_BYTES);
121 ret = register_dtl(hwcpu, __pa(dtl));
122 if (ret)
123 pr_err("WARNING: DTL registration of cpu %d (hw %d) "
124 "failed with %ld\n", smp_processor_id(),
125 hwcpu, ret);
126 lppaca_of(cpu).dtl_enable_mask = 2;
127 }
128}
129
130#ifdef CONFIG_PPC_STD_MMU_64
131
132static long pSeries_lpar_hpte_insert(unsigned long hpte_group,
133 unsigned long vpn, unsigned long pa,
134 unsigned long rflags, unsigned long vflags,
135 int psize, int apsize, int ssize)
136{
137 unsigned long lpar_rc;
138 unsigned long flags;
139 unsigned long slot;
140 unsigned long hpte_v, hpte_r;
141
142 if (!(vflags & HPTE_V_BOLTED))
143 pr_devel("hpte_insert(group=%lx, vpn=%016lx, "
144 "pa=%016lx, rflags=%lx, vflags=%lx, psize=%d)\n",
145 hpte_group, vpn, pa, rflags, vflags, psize);
146
147 hpte_v = hpte_encode_v(vpn, psize, apsize, ssize) | vflags | HPTE_V_VALID;
148 hpte_r = hpte_encode_r(pa, psize, apsize, ssize) | rflags;
149
150 if (!(vflags & HPTE_V_BOLTED))
151 pr_devel(" hpte_v=%016lx, hpte_r=%016lx\n", hpte_v, hpte_r);
152
153
154
155
156
157
158
159 flags = 0;
160
161 if (firmware_has_feature(FW_FEATURE_XCMO) && !(hpte_r & HPTE_R_N))
162 flags |= H_COALESCE_CAND;
163
164 lpar_rc = plpar_pte_enter(flags, hpte_group, hpte_v, hpte_r, &slot);
165 if (unlikely(lpar_rc == H_PTEG_FULL)) {
166 if (!(vflags & HPTE_V_BOLTED))
167 pr_devel(" full\n");
168 return -1;
169 }
170
171
172
173
174
175
176 if (unlikely(lpar_rc != H_SUCCESS)) {
177 if (!(vflags & HPTE_V_BOLTED))
178 pr_devel(" lpar err %ld\n", lpar_rc);
179 return -2;
180 }
181 if (!(vflags & HPTE_V_BOLTED))
182 pr_devel(" -> slot: %lu\n", slot & 7);
183
184
185
186
187 return (slot & 7) | (!!(vflags & HPTE_V_SECONDARY) << 3);
188}
189
190static DEFINE_SPINLOCK(pSeries_lpar_tlbie_lock);
191
192static long pSeries_lpar_hpte_remove(unsigned long hpte_group)
193{
194 unsigned long slot_offset;
195 unsigned long lpar_rc;
196 int i;
197 unsigned long dummy1, dummy2;
198
199
200 slot_offset = mftb() & 0x7;
201
202 for (i = 0; i < HPTES_PER_GROUP; i++) {
203
204
205 lpar_rc = plpar_pte_remove(H_ANDCOND, hpte_group + slot_offset,
206 (0x1UL << 4), &dummy1, &dummy2);
207 if (lpar_rc == H_SUCCESS)
208 return i;
209
210
211
212
213
214
215 BUG_ON(lpar_rc != H_NOT_FOUND && lpar_rc != H_RESOURCE);
216
217 slot_offset++;
218 slot_offset &= 0x7;
219 }
220
221 return -1;
222}
223
224static void pSeries_lpar_hptab_clear(void)
225{
226 unsigned long size_bytes = 1UL << ppc64_pft_size;
227 unsigned long hpte_count = size_bytes >> 4;
228 struct {
229 unsigned long pteh;
230 unsigned long ptel;
231 } ptes[4];
232 long lpar_rc;
233 unsigned long i, j;
234
235
236
237
238
239 for (i = 0; i < hpte_count; i += 4) {
240 lpar_rc = plpar_pte_read_4_raw(0, i, (void *)ptes);
241 if (lpar_rc != H_SUCCESS)
242 continue;
243 for (j = 0; j < 4; j++){
244 if ((ptes[j].pteh & HPTE_V_VRMA_MASK) ==
245 HPTE_V_VRMA_MASK)
246 continue;
247 if (ptes[j].pteh & HPTE_V_VALID)
248 plpar_pte_remove_raw(0, i + j, 0,
249 &(ptes[j].pteh), &(ptes[j].ptel));
250 }
251 }
252
253#ifdef __LITTLE_ENDIAN__
254
255
256
257
258
259
260
261
262
263
264 if (firmware_has_feature(FW_FEATURE_SET_MODE) && !is_fadump_active())
265 pseries_big_endian_exceptions();
266#endif
267}
268
269
270
271
272
273
274
275static long pSeries_lpar_hpte_updatepp(unsigned long slot,
276 unsigned long newpp,
277 unsigned long vpn,
278 int psize, int apsize,
279 int ssize, unsigned long inv_flags)
280{
281 unsigned long lpar_rc;
282 unsigned long flags = (newpp & 7) | H_AVPN;
283 unsigned long want_v;
284
285 want_v = hpte_encode_avpn(vpn, psize, ssize);
286
287 pr_devel(" update: avpnv=%016lx, hash=%016lx, f=%lx, psize: %d ...",
288 want_v, slot, flags, psize);
289
290 lpar_rc = plpar_pte_protect(flags, slot, want_v);
291
292 if (lpar_rc == H_NOT_FOUND) {
293 pr_devel("not found !\n");
294 return -1;
295 }
296
297 pr_devel("ok\n");
298
299 BUG_ON(lpar_rc != H_SUCCESS);
300
301 return 0;
302}
303
304static long __pSeries_lpar_hpte_find(unsigned long want_v, unsigned long hpte_group)
305{
306 long lpar_rc;
307 unsigned long i, j;
308 struct {
309 unsigned long pteh;
310 unsigned long ptel;
311 } ptes[4];
312
313 for (i = 0; i < HPTES_PER_GROUP; i += 4, hpte_group += 4) {
314
315 lpar_rc = plpar_pte_read_4(0, hpte_group, (void *)ptes);
316 if (lpar_rc != H_SUCCESS)
317 continue;
318
319 for (j = 0; j < 4; j++) {
320 if (HPTE_V_COMPARE(ptes[j].pteh, want_v) &&
321 (ptes[j].pteh & HPTE_V_VALID))
322 return i + j;
323 }
324 }
325
326 return -1;
327}
328
329static long pSeries_lpar_hpte_find(unsigned long vpn, int psize, int ssize)
330{
331 long slot;
332 unsigned long hash;
333 unsigned long want_v;
334 unsigned long hpte_group;
335
336 hash = hpt_hash(vpn, mmu_psize_defs[psize].shift, ssize);
337 want_v = hpte_encode_avpn(vpn, psize, ssize);
338
339
340 hpte_group = (hash & htab_hash_mask) * HPTES_PER_GROUP;
341 slot = __pSeries_lpar_hpte_find(want_v, hpte_group);
342 if (slot < 0)
343 return -1;
344 return hpte_group + slot;
345}
346
347static void pSeries_lpar_hpte_updateboltedpp(unsigned long newpp,
348 unsigned long ea,
349 int psize, int ssize)
350{
351 unsigned long vpn;
352 unsigned long lpar_rc, slot, vsid, flags;
353
354 vsid = get_kernel_vsid(ea, ssize);
355 vpn = hpt_vpn(ea, vsid, ssize);
356
357 slot = pSeries_lpar_hpte_find(vpn, psize, ssize);
358 BUG_ON(slot == -1);
359
360 flags = newpp & 7;
361 lpar_rc = plpar_pte_protect(flags, slot, 0);
362
363 BUG_ON(lpar_rc != H_SUCCESS);
364}
365
366static void pSeries_lpar_hpte_invalidate(unsigned long slot, unsigned long vpn,
367 int psize, int apsize,
368 int ssize, int local)
369{
370 unsigned long want_v;
371 unsigned long lpar_rc;
372 unsigned long dummy1, dummy2;
373
374 pr_devel(" inval : slot=%lx, vpn=%016lx, psize: %d, local: %d\n",
375 slot, vpn, psize, local);
376
377 want_v = hpte_encode_avpn(vpn, psize, ssize);
378 lpar_rc = plpar_pte_remove(H_AVPN, slot, want_v, &dummy1, &dummy2);
379 if (lpar_rc == H_NOT_FOUND)
380 return;
381
382 BUG_ON(lpar_rc != H_SUCCESS);
383}
384
385#ifdef CONFIG_TRANSPARENT_HUGEPAGE
386
387
388
389
390#define PPC64_HUGE_HPTE_BATCH 12
391
392static void __pSeries_lpar_hugepage_invalidate(unsigned long *slot,
393 unsigned long *vpn, int count,
394 int psize, int ssize)
395{
396 unsigned long param[8];
397 int i = 0, pix = 0, rc;
398 unsigned long flags = 0;
399 int lock_tlbie = !mmu_has_feature(MMU_FTR_LOCKLESS_TLBIE);
400
401 if (lock_tlbie)
402 spin_lock_irqsave(&pSeries_lpar_tlbie_lock, flags);
403
404 for (i = 0; i < count; i++) {
405
406 if (!firmware_has_feature(FW_FEATURE_BULK_REMOVE)) {
407 pSeries_lpar_hpte_invalidate(slot[i], vpn[i], psize, 0,
408 ssize, 0);
409 } else {
410 param[pix] = HBR_REQUEST | HBR_AVPN | slot[i];
411 param[pix+1] = hpte_encode_avpn(vpn[i], psize, ssize);
412 pix += 2;
413 if (pix == 8) {
414 rc = plpar_hcall9(H_BULK_REMOVE, param,
415 param[0], param[1], param[2],
416 param[3], param[4], param[5],
417 param[6], param[7]);
418 BUG_ON(rc != H_SUCCESS);
419 pix = 0;
420 }
421 }
422 }
423 if (pix) {
424 param[pix] = HBR_END;
425 rc = plpar_hcall9(H_BULK_REMOVE, param, param[0], param[1],
426 param[2], param[3], param[4], param[5],
427 param[6], param[7]);
428 BUG_ON(rc != H_SUCCESS);
429 }
430
431 if (lock_tlbie)
432 spin_unlock_irqrestore(&pSeries_lpar_tlbie_lock, flags);
433}
434
435static void pSeries_lpar_hugepage_invalidate(unsigned long vsid,
436 unsigned long addr,
437 unsigned char *hpte_slot_array,
438 int psize, int ssize, int local)
439{
440 int i, index = 0;
441 unsigned long s_addr = addr;
442 unsigned int max_hpte_count, valid;
443 unsigned long vpn_array[PPC64_HUGE_HPTE_BATCH];
444 unsigned long slot_array[PPC64_HUGE_HPTE_BATCH];
445 unsigned long shift, hidx, vpn = 0, hash, slot;
446
447 shift = mmu_psize_defs[psize].shift;
448 max_hpte_count = 1U << (PMD_SHIFT - shift);
449
450 for (i = 0; i < max_hpte_count; i++) {
451 valid = hpte_valid(hpte_slot_array, i);
452 if (!valid)
453 continue;
454 hidx = hpte_hash_index(hpte_slot_array, i);
455
456
457 addr = s_addr + (i * (1ul << shift));
458 vpn = hpt_vpn(addr, vsid, ssize);
459 hash = hpt_hash(vpn, shift, ssize);
460 if (hidx & _PTEIDX_SECONDARY)
461 hash = ~hash;
462
463 slot = (hash & htab_hash_mask) * HPTES_PER_GROUP;
464 slot += hidx & _PTEIDX_GROUP_IX;
465
466 slot_array[index] = slot;
467 vpn_array[index] = vpn;
468 if (index == PPC64_HUGE_HPTE_BATCH - 1) {
469
470
471
472 __pSeries_lpar_hugepage_invalidate(slot_array,
473 vpn_array,
474 PPC64_HUGE_HPTE_BATCH,
475 psize, ssize);
476 index = 0;
477 } else
478 index++;
479 }
480 if (index)
481 __pSeries_lpar_hugepage_invalidate(slot_array, vpn_array,
482 index, psize, ssize);
483}
484#else
485static void pSeries_lpar_hugepage_invalidate(unsigned long vsid,
486 unsigned long addr,
487 unsigned char *hpte_slot_array,
488 int psize, int ssize, int local)
489{
490 WARN(1, "%s called without THP support\n", __func__);
491}
492#endif
493
494static int pSeries_lpar_hpte_removebolted(unsigned long ea,
495 int psize, int ssize)
496{
497 unsigned long vpn;
498 unsigned long slot, vsid;
499
500 vsid = get_kernel_vsid(ea, ssize);
501 vpn = hpt_vpn(ea, vsid, ssize);
502
503 slot = pSeries_lpar_hpte_find(vpn, psize, ssize);
504 if (slot == -1)
505 return -ENOENT;
506
507
508
509
510 pSeries_lpar_hpte_invalidate(slot, vpn, psize, 0, ssize, 0);
511 return 0;
512}
513
514
515
516
517
518static void pSeries_lpar_flush_hash_range(unsigned long number, int local)
519{
520 unsigned long vpn;
521 unsigned long i, pix, rc;
522 unsigned long flags = 0;
523 struct ppc64_tlb_batch *batch = this_cpu_ptr(&ppc64_tlb_batch);
524 int lock_tlbie = !mmu_has_feature(MMU_FTR_LOCKLESS_TLBIE);
525 unsigned long param[9];
526 unsigned long hash, index, shift, hidx, slot;
527 real_pte_t pte;
528 int psize, ssize;
529
530 if (lock_tlbie)
531 spin_lock_irqsave(&pSeries_lpar_tlbie_lock, flags);
532
533 psize = batch->psize;
534 ssize = batch->ssize;
535 pix = 0;
536 for (i = 0; i < number; i++) {
537 vpn = batch->vpn[i];
538 pte = batch->pte[i];
539 pte_iterate_hashed_subpages(pte, psize, vpn, index, shift) {
540 hash = hpt_hash(vpn, shift, ssize);
541 hidx = __rpte_to_hidx(pte, index);
542 if (hidx & _PTEIDX_SECONDARY)
543 hash = ~hash;
544 slot = (hash & htab_hash_mask) * HPTES_PER_GROUP;
545 slot += hidx & _PTEIDX_GROUP_IX;
546 if (!firmware_has_feature(FW_FEATURE_BULK_REMOVE)) {
547
548
549
550 pSeries_lpar_hpte_invalidate(slot, vpn, psize,
551 0, ssize, local);
552 } else {
553 param[pix] = HBR_REQUEST | HBR_AVPN | slot;
554 param[pix+1] = hpte_encode_avpn(vpn, psize,
555 ssize);
556 pix += 2;
557 if (pix == 8) {
558 rc = plpar_hcall9(H_BULK_REMOVE, param,
559 param[0], param[1], param[2],
560 param[3], param[4], param[5],
561 param[6], param[7]);
562 BUG_ON(rc != H_SUCCESS);
563 pix = 0;
564 }
565 }
566 } pte_iterate_hashed_end();
567 }
568 if (pix) {
569 param[pix] = HBR_END;
570 rc = plpar_hcall9(H_BULK_REMOVE, param, param[0], param[1],
571 param[2], param[3], param[4], param[5],
572 param[6], param[7]);
573 BUG_ON(rc != H_SUCCESS);
574 }
575
576 if (lock_tlbie)
577 spin_unlock_irqrestore(&pSeries_lpar_tlbie_lock, flags);
578}
579
580static int __init disable_bulk_remove(char *str)
581{
582 if (strcmp(str, "off") == 0 &&
583 firmware_has_feature(FW_FEATURE_BULK_REMOVE)) {
584 printk(KERN_INFO "Disabling BULK_REMOVE firmware feature");
585 powerpc_firmware_features &= ~FW_FEATURE_BULK_REMOVE;
586 }
587 return 1;
588}
589
590__setup("bulk_remove=", disable_bulk_remove);
591
592void __init hpte_init_pseries(void)
593{
594 mmu_hash_ops.hpte_invalidate = pSeries_lpar_hpte_invalidate;
595 mmu_hash_ops.hpte_updatepp = pSeries_lpar_hpte_updatepp;
596 mmu_hash_ops.hpte_updateboltedpp = pSeries_lpar_hpte_updateboltedpp;
597 mmu_hash_ops.hpte_insert = pSeries_lpar_hpte_insert;
598 mmu_hash_ops.hpte_remove = pSeries_lpar_hpte_remove;
599 mmu_hash_ops.hpte_removebolted = pSeries_lpar_hpte_removebolted;
600 mmu_hash_ops.flush_hash_range = pSeries_lpar_flush_hash_range;
601 mmu_hash_ops.hpte_clear_all = pSeries_lpar_hptab_clear;
602 mmu_hash_ops.hugepage_invalidate = pSeries_lpar_hugepage_invalidate;
603}
604
605#ifdef CONFIG_PPC_SMLPAR
606#define CMO_FREE_HINT_DEFAULT 1
607static int cmo_free_hint_flag = CMO_FREE_HINT_DEFAULT;
608
609static int __init cmo_free_hint(char *str)
610{
611 char *parm;
612 parm = strstrip(str);
613
614 if (strcasecmp(parm, "no") == 0 || strcasecmp(parm, "off") == 0) {
615 printk(KERN_INFO "cmo_free_hint: CMO free page hinting is not active.\n");
616 cmo_free_hint_flag = 0;
617 return 1;
618 }
619
620 cmo_free_hint_flag = 1;
621 printk(KERN_INFO "cmo_free_hint: CMO free page hinting is active.\n");
622
623 if (strcasecmp(parm, "yes") == 0 || strcasecmp(parm, "on") == 0)
624 return 1;
625
626 return 0;
627}
628
629__setup("cmo_free_hint=", cmo_free_hint);
630
631static void pSeries_set_page_state(struct page *page, int order,
632 unsigned long state)
633{
634 int i, j;
635 unsigned long cmo_page_sz, addr;
636
637 cmo_page_sz = cmo_get_page_size();
638 addr = __pa((unsigned long)page_address(page));
639
640 for (i = 0; i < (1 << order); i++, addr += PAGE_SIZE) {
641 for (j = 0; j < PAGE_SIZE; j += cmo_page_sz)
642 plpar_hcall_norets(H_PAGE_INIT, state, addr + j, 0);
643 }
644}
645
646void arch_free_page(struct page *page, int order)
647{
648 if (radix_enabled())
649 return;
650 if (!cmo_free_hint_flag || !firmware_has_feature(FW_FEATURE_CMO))
651 return;
652
653 pSeries_set_page_state(page, order, H_PAGE_SET_UNUSED);
654}
655EXPORT_SYMBOL(arch_free_page);
656
657#endif
658#endif
659
660#ifdef CONFIG_TRACEPOINTS
661#ifdef HAVE_JUMP_LABEL
662struct static_key hcall_tracepoint_key = STATIC_KEY_INIT;
663
664void hcall_tracepoint_regfunc(void)
665{
666 static_key_slow_inc(&hcall_tracepoint_key);
667}
668
669void hcall_tracepoint_unregfunc(void)
670{
671 static_key_slow_dec(&hcall_tracepoint_key);
672}
673#else
674
675
676
677
678
679
680
681extern long hcall_tracepoint_refcount;
682
683void hcall_tracepoint_regfunc(void)
684{
685 hcall_tracepoint_refcount++;
686}
687
688void hcall_tracepoint_unregfunc(void)
689{
690 hcall_tracepoint_refcount--;
691}
692#endif
693
694
695
696
697
698
699static DEFINE_PER_CPU(unsigned int, hcall_trace_depth);
700
701
702void __trace_hcall_entry(unsigned long opcode, unsigned long *args)
703{
704 unsigned long flags;
705 unsigned int *depth;
706
707
708
709
710
711 if (opcode == H_CEDE)
712 return;
713
714 local_irq_save(flags);
715
716 depth = this_cpu_ptr(&hcall_trace_depth);
717
718 if (*depth)
719 goto out;
720
721 (*depth)++;
722 preempt_disable();
723 trace_hcall_entry(opcode, args);
724 (*depth)--;
725
726out:
727 local_irq_restore(flags);
728}
729
730void __trace_hcall_exit(long opcode, unsigned long retval,
731 unsigned long *retbuf)
732{
733 unsigned long flags;
734 unsigned int *depth;
735
736 if (opcode == H_CEDE)
737 return;
738
739 local_irq_save(flags);
740
741 depth = this_cpu_ptr(&hcall_trace_depth);
742
743 if (*depth)
744 goto out;
745
746 (*depth)++;
747 trace_hcall_exit(opcode, retval, retbuf);
748 preempt_enable();
749 (*depth)--;
750
751out:
752 local_irq_restore(flags);
753}
754#endif
755
756
757
758
759
760int h_get_mpp(struct hvcall_mpp_data *mpp_data)
761{
762 int rc;
763 unsigned long retbuf[PLPAR_HCALL9_BUFSIZE];
764
765 rc = plpar_hcall9(H_GET_MPP, retbuf);
766
767 mpp_data->entitled_mem = retbuf[0];
768 mpp_data->mapped_mem = retbuf[1];
769
770 mpp_data->group_num = (retbuf[2] >> 2 * 8) & 0xffff;
771 mpp_data->pool_num = retbuf[2] & 0xffff;
772
773 mpp_data->mem_weight = (retbuf[3] >> 7 * 8) & 0xff;
774 mpp_data->unallocated_mem_weight = (retbuf[3] >> 6 * 8) & 0xff;
775 mpp_data->unallocated_entitlement = retbuf[3] & 0xffffffffffffUL;
776
777 mpp_data->pool_size = retbuf[4];
778 mpp_data->loan_request = retbuf[5];
779 mpp_data->backing_mem = retbuf[6];
780
781 return rc;
782}
783EXPORT_SYMBOL(h_get_mpp);
784
785int h_get_mpp_x(struct hvcall_mpp_x_data *mpp_x_data)
786{
787 int rc;
788 unsigned long retbuf[PLPAR_HCALL9_BUFSIZE] = { 0 };
789
790 rc = plpar_hcall9(H_GET_MPP_X, retbuf);
791
792 mpp_x_data->coalesced_bytes = retbuf[0];
793 mpp_x_data->pool_coalesced_bytes = retbuf[1];
794 mpp_x_data->pool_purr_cycles = retbuf[2];
795 mpp_x_data->pool_spurr_cycles = retbuf[3];
796
797 return rc;
798}
799