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21#include <linux/kernel.h>
22#include <linux/export.h>
23#include <linux/memblock.h>
24#include <linux/slab.h>
25
26#include <asm/cell-regs.h>
27#include <asm/firmware.h>
28#include <asm/prom.h>
29#include <asm/udbg.h>
30#include <asm/lv1call.h>
31#include <asm/setup.h>
32
33#include "platform.h"
34
35#if defined(DEBUG)
36#define DBG udbg_printf
37#else
38#define DBG pr_devel
39#endif
40
41enum {
42#if defined(CONFIG_PS3_DYNAMIC_DMA)
43 USE_DYNAMIC_DMA = 1,
44#else
45 USE_DYNAMIC_DMA = 0,
46#endif
47};
48
49enum {
50 PAGE_SHIFT_4K = 12U,
51 PAGE_SHIFT_64K = 16U,
52 PAGE_SHIFT_16M = 24U,
53};
54
55static unsigned long make_page_sizes(unsigned long a, unsigned long b)
56{
57 return (a << 56) | (b << 48);
58}
59
60enum {
61 ALLOCATE_MEMORY_TRY_ALT_UNIT = 0X04,
62 ALLOCATE_MEMORY_ADDR_ZERO = 0X08,
63};
64
65
66
67enum {
68 HTAB_SIZE_MAX = 20U,
69 HTAB_SIZE_MIN = 18U,
70};
71
72
73
74
75
76
77
78
79
80
81
82
83
84struct mem_region {
85 u64 base;
86 u64 size;
87 unsigned long offset;
88 int destroy;
89};
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109struct map {
110 u64 total;
111 u64 vas_id;
112 u64 htab_size;
113 struct mem_region rm;
114 struct mem_region r1;
115};
116
117#define debug_dump_map(x) _debug_dump_map(x, __func__, __LINE__)
118static void __maybe_unused _debug_dump_map(const struct map *m,
119 const char *func, int line)
120{
121 DBG("%s:%d: map.total = %llxh\n", func, line, m->total);
122 DBG("%s:%d: map.rm.size = %llxh\n", func, line, m->rm.size);
123 DBG("%s:%d: map.vas_id = %llu\n", func, line, m->vas_id);
124 DBG("%s:%d: map.htab_size = %llxh\n", func, line, m->htab_size);
125 DBG("%s:%d: map.r1.base = %llxh\n", func, line, m->r1.base);
126 DBG("%s:%d: map.r1.offset = %lxh\n", func, line, m->r1.offset);
127 DBG("%s:%d: map.r1.size = %llxh\n", func, line, m->r1.size);
128}
129
130static struct map map;
131
132
133
134
135
136
137unsigned long ps3_mm_phys_to_lpar(unsigned long phys_addr)
138{
139 BUG_ON(is_kernel_addr(phys_addr));
140 return (phys_addr < map.rm.size || phys_addr >= map.total)
141 ? phys_addr : phys_addr + map.r1.offset;
142}
143
144EXPORT_SYMBOL(ps3_mm_phys_to_lpar);
145
146
147
148
149
150void __init ps3_mm_vas_create(unsigned long* htab_size)
151{
152 int result;
153 u64 start_address;
154 u64 size;
155 u64 access_right;
156 u64 max_page_size;
157 u64 flags;
158
159 result = lv1_query_logical_partition_address_region_info(0,
160 &start_address, &size, &access_right, &max_page_size,
161 &flags);
162
163 if (result) {
164 DBG("%s:%d: lv1_query_logical_partition_address_region_info "
165 "failed: %s\n", __func__, __LINE__,
166 ps3_result(result));
167 goto fail;
168 }
169
170 if (max_page_size < PAGE_SHIFT_16M) {
171 DBG("%s:%d: bad max_page_size %llxh\n", __func__, __LINE__,
172 max_page_size);
173 goto fail;
174 }
175
176 BUILD_BUG_ON(CONFIG_PS3_HTAB_SIZE > HTAB_SIZE_MAX);
177 BUILD_BUG_ON(CONFIG_PS3_HTAB_SIZE < HTAB_SIZE_MIN);
178
179 result = lv1_construct_virtual_address_space(CONFIG_PS3_HTAB_SIZE,
180 2, make_page_sizes(PAGE_SHIFT_16M, PAGE_SHIFT_64K),
181 &map.vas_id, &map.htab_size);
182
183 if (result) {
184 DBG("%s:%d: lv1_construct_virtual_address_space failed: %s\n",
185 __func__, __LINE__, ps3_result(result));
186 goto fail;
187 }
188
189 result = lv1_select_virtual_address_space(map.vas_id);
190
191 if (result) {
192 DBG("%s:%d: lv1_select_virtual_address_space failed: %s\n",
193 __func__, __LINE__, ps3_result(result));
194 goto fail;
195 }
196
197 *htab_size = map.htab_size;
198
199 debug_dump_map(&map);
200
201 return;
202
203fail:
204 panic("ps3_mm_vas_create failed");
205}
206
207
208
209
210
211void ps3_mm_vas_destroy(void)
212{
213 int result;
214
215 DBG("%s:%d: map.vas_id = %llu\n", __func__, __LINE__, map.vas_id);
216
217 if (map.vas_id) {
218 result = lv1_select_virtual_address_space(0);
219 BUG_ON(result);
220 result = lv1_destruct_virtual_address_space(map.vas_id);
221 BUG_ON(result);
222 map.vas_id = 0;
223 }
224}
225
226static int ps3_mm_get_repository_highmem(struct mem_region *r)
227{
228 int result;
229
230
231
232 result = ps3_repository_read_highmem_info(0, &r->base, &r->size);
233
234 if (result)
235 goto zero_region;
236
237 if (!r->base || !r->size) {
238 result = -1;
239 goto zero_region;
240 }
241
242 r->offset = r->base - map.rm.size;
243
244 DBG("%s:%d: Found high region in repository: %llxh %llxh\n",
245 __func__, __LINE__, r->base, r->size);
246
247 return 0;
248
249zero_region:
250 DBG("%s:%d: No high region in repository.\n", __func__, __LINE__);
251
252 r->size = r->base = r->offset = 0;
253 return result;
254}
255
256static int ps3_mm_set_repository_highmem(const struct mem_region *r)
257{
258
259
260 return r ? ps3_repository_write_highmem_info(0, r->base, r->size) :
261 ps3_repository_write_highmem_info(0, 0, 0);
262}
263
264
265
266
267
268
269
270
271
272
273static int ps3_mm_region_create(struct mem_region *r, unsigned long size)
274{
275 int result;
276 u64 muid;
277
278 r->size = _ALIGN_DOWN(size, 1 << PAGE_SHIFT_16M);
279
280 DBG("%s:%d requested %lxh\n", __func__, __LINE__, size);
281 DBG("%s:%d actual %llxh\n", __func__, __LINE__, r->size);
282 DBG("%s:%d difference %llxh (%lluMB)\n", __func__, __LINE__,
283 size - r->size, (size - r->size) / 1024 / 1024);
284
285 if (r->size == 0) {
286 DBG("%s:%d: size == 0\n", __func__, __LINE__);
287 result = -1;
288 goto zero_region;
289 }
290
291 result = lv1_allocate_memory(r->size, PAGE_SHIFT_16M, 0,
292 ALLOCATE_MEMORY_TRY_ALT_UNIT, &r->base, &muid);
293
294 if (result || r->base < map.rm.size) {
295 DBG("%s:%d: lv1_allocate_memory failed: %s\n",
296 __func__, __LINE__, ps3_result(result));
297 goto zero_region;
298 }
299
300 r->destroy = 1;
301 r->offset = r->base - map.rm.size;
302 return result;
303
304zero_region:
305 r->size = r->base = r->offset = 0;
306 return result;
307}
308
309
310
311
312
313
314static void ps3_mm_region_destroy(struct mem_region *r)
315{
316 int result;
317
318 if (!r->destroy) {
319 pr_info("%s:%d: Not destroying high region: %llxh %llxh\n",
320 __func__, __LINE__, r->base, r->size);
321 return;
322 }
323
324 DBG("%s:%d: r->base = %llxh\n", __func__, __LINE__, r->base);
325
326 if (r->base) {
327 result = lv1_release_memory(r->base);
328 BUG_ON(result);
329 r->size = r->base = r->offset = 0;
330 map.total = map.rm.size;
331 }
332 ps3_mm_set_repository_highmem(NULL);
333}
334
335
336
337
338
339
340
341
342
343
344
345static unsigned long dma_sb_lpar_to_bus(struct ps3_dma_region *r,
346 unsigned long lpar_addr)
347{
348 if (lpar_addr >= map.rm.size)
349 lpar_addr -= map.r1.offset;
350 BUG_ON(lpar_addr < r->offset);
351 BUG_ON(lpar_addr >= r->offset + r->len);
352 return r->bus_addr + lpar_addr - r->offset;
353}
354
355#define dma_dump_region(_a) _dma_dump_region(_a, __func__, __LINE__)
356static void __maybe_unused _dma_dump_region(const struct ps3_dma_region *r,
357 const char *func, int line)
358{
359 DBG("%s:%d: dev %llu:%llu\n", func, line, r->dev->bus_id,
360 r->dev->dev_id);
361 DBG("%s:%d: page_size %u\n", func, line, r->page_size);
362 DBG("%s:%d: bus_addr %lxh\n", func, line, r->bus_addr);
363 DBG("%s:%d: len %lxh\n", func, line, r->len);
364 DBG("%s:%d: offset %lxh\n", func, line, r->offset);
365}
366
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377
378
379
380
381struct dma_chunk {
382 struct ps3_dma_region *region;
383 unsigned long lpar_addr;
384 unsigned long bus_addr;
385 unsigned long len;
386 struct list_head link;
387 unsigned int usage_count;
388};
389
390#define dma_dump_chunk(_a) _dma_dump_chunk(_a, __func__, __LINE__)
391static void _dma_dump_chunk (const struct dma_chunk* c, const char* func,
392 int line)
393{
394 DBG("%s:%d: r.dev %llu:%llu\n", func, line,
395 c->region->dev->bus_id, c->region->dev->dev_id);
396 DBG("%s:%d: r.bus_addr %lxh\n", func, line, c->region->bus_addr);
397 DBG("%s:%d: r.page_size %u\n", func, line, c->region->page_size);
398 DBG("%s:%d: r.len %lxh\n", func, line, c->region->len);
399 DBG("%s:%d: r.offset %lxh\n", func, line, c->region->offset);
400 DBG("%s:%d: c.lpar_addr %lxh\n", func, line, c->lpar_addr);
401 DBG("%s:%d: c.bus_addr %lxh\n", func, line, c->bus_addr);
402 DBG("%s:%d: c.len %lxh\n", func, line, c->len);
403}
404
405static struct dma_chunk * dma_find_chunk(struct ps3_dma_region *r,
406 unsigned long bus_addr, unsigned long len)
407{
408 struct dma_chunk *c;
409 unsigned long aligned_bus = _ALIGN_DOWN(bus_addr, 1 << r->page_size);
410 unsigned long aligned_len = _ALIGN_UP(len+bus_addr-aligned_bus,
411 1 << r->page_size);
412
413 list_for_each_entry(c, &r->chunk_list.head, link) {
414
415 if (aligned_bus >= c->bus_addr &&
416 aligned_bus + aligned_len <= c->bus_addr + c->len)
417 return c;
418
419
420 if (aligned_bus + aligned_len <= c->bus_addr)
421 continue;
422
423
424 if (aligned_bus >= c->bus_addr + c->len)
425 continue;
426
427
428 dma_dump_chunk(c);
429 BUG();
430 }
431 return NULL;
432}
433
434static struct dma_chunk *dma_find_chunk_lpar(struct ps3_dma_region *r,
435 unsigned long lpar_addr, unsigned long len)
436{
437 struct dma_chunk *c;
438 unsigned long aligned_lpar = _ALIGN_DOWN(lpar_addr, 1 << r->page_size);
439 unsigned long aligned_len = _ALIGN_UP(len + lpar_addr - aligned_lpar,
440 1 << r->page_size);
441
442 list_for_each_entry(c, &r->chunk_list.head, link) {
443
444 if (c->lpar_addr <= aligned_lpar &&
445 aligned_lpar < c->lpar_addr + c->len) {
446 if (aligned_lpar + aligned_len <= c->lpar_addr + c->len)
447 return c;
448 else {
449 dma_dump_chunk(c);
450 BUG();
451 }
452 }
453
454 if (aligned_lpar + aligned_len <= c->lpar_addr) {
455 continue;
456 }
457
458 if (c->lpar_addr + c->len <= aligned_lpar) {
459 continue;
460 }
461 }
462 return NULL;
463}
464
465static int dma_sb_free_chunk(struct dma_chunk *c)
466{
467 int result = 0;
468
469 if (c->bus_addr) {
470 result = lv1_unmap_device_dma_region(c->region->dev->bus_id,
471 c->region->dev->dev_id, c->bus_addr, c->len);
472 BUG_ON(result);
473 }
474
475 kfree(c);
476 return result;
477}
478
479static int dma_ioc0_free_chunk(struct dma_chunk *c)
480{
481 int result = 0;
482 int iopage;
483 unsigned long offset;
484 struct ps3_dma_region *r = c->region;
485
486 DBG("%s:start\n", __func__);
487 for (iopage = 0; iopage < (c->len >> r->page_size); iopage++) {
488 offset = (1 << r->page_size) * iopage;
489
490 result = lv1_put_iopte(0,
491 c->bus_addr + offset,
492 c->lpar_addr + offset,
493 r->ioid,
494 0);
495 DBG("%s: bus=%#lx, lpar=%#lx, ioid=%d\n", __func__,
496 c->bus_addr + offset,
497 c->lpar_addr + offset,
498 r->ioid);
499
500 if (result) {
501 DBG("%s:%d: lv1_put_iopte failed: %s\n", __func__,
502 __LINE__, ps3_result(result));
503 }
504 }
505 kfree(c);
506 DBG("%s:end\n", __func__);
507 return result;
508}
509
510
511
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513
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515
516
517
518
519
520
521static int dma_sb_map_pages(struct ps3_dma_region *r, unsigned long phys_addr,
522 unsigned long len, struct dma_chunk **c_out, u64 iopte_flag)
523{
524 int result;
525 struct dma_chunk *c;
526
527 c = kzalloc(sizeof(struct dma_chunk), GFP_ATOMIC);
528
529 if (!c) {
530 result = -ENOMEM;
531 goto fail_alloc;
532 }
533
534 c->region = r;
535 c->lpar_addr = ps3_mm_phys_to_lpar(phys_addr);
536 c->bus_addr = dma_sb_lpar_to_bus(r, c->lpar_addr);
537 c->len = len;
538
539 BUG_ON(iopte_flag != 0xf800000000000000UL);
540 result = lv1_map_device_dma_region(c->region->dev->bus_id,
541 c->region->dev->dev_id, c->lpar_addr,
542 c->bus_addr, c->len, iopte_flag);
543 if (result) {
544 DBG("%s:%d: lv1_map_device_dma_region failed: %s\n",
545 __func__, __LINE__, ps3_result(result));
546 goto fail_map;
547 }
548
549 list_add(&c->link, &r->chunk_list.head);
550
551 *c_out = c;
552 return 0;
553
554fail_map:
555 kfree(c);
556fail_alloc:
557 *c_out = NULL;
558 DBG(" <- %s:%d\n", __func__, __LINE__);
559 return result;
560}
561
562static int dma_ioc0_map_pages(struct ps3_dma_region *r, unsigned long phys_addr,
563 unsigned long len, struct dma_chunk **c_out,
564 u64 iopte_flag)
565{
566 int result;
567 struct dma_chunk *c, *last;
568 int iopage, pages;
569 unsigned long offset;
570
571 DBG(KERN_ERR "%s: phy=%#lx, lpar%#lx, len=%#lx\n", __func__,
572 phys_addr, ps3_mm_phys_to_lpar(phys_addr), len);
573 c = kzalloc(sizeof(struct dma_chunk), GFP_ATOMIC);
574
575 if (!c) {
576 result = -ENOMEM;
577 goto fail_alloc;
578 }
579
580 c->region = r;
581 c->len = len;
582 c->lpar_addr = ps3_mm_phys_to_lpar(phys_addr);
583
584 if (list_empty(&r->chunk_list.head)) {
585
586 c->bus_addr = r->bus_addr;
587 } else {
588
589 last = list_entry(r->chunk_list.head.next,
590 struct dma_chunk, link);
591 c->bus_addr = last->bus_addr + last->len;
592 DBG("%s: last bus=%#lx, len=%#lx\n", __func__,
593 last->bus_addr, last->len);
594 }
595
596
597
598
599 pages = len >> r->page_size;
600 DBG("%s: pgsize=%#x len=%#lx pages=%#x iopteflag=%#llx\n", __func__,
601 r->page_size, r->len, pages, iopte_flag);
602 for (iopage = 0; iopage < pages; iopage++) {
603 offset = (1 << r->page_size) * iopage;
604 result = lv1_put_iopte(0,
605 c->bus_addr + offset,
606 c->lpar_addr + offset,
607 r->ioid,
608 iopte_flag);
609 if (result) {
610 pr_warning("%s:%d: lv1_put_iopte failed: %s\n",
611 __func__, __LINE__, ps3_result(result));
612 goto fail_map;
613 }
614 DBG("%s: pg=%d bus=%#lx, lpar=%#lx, ioid=%#x\n", __func__,
615 iopage, c->bus_addr + offset, c->lpar_addr + offset,
616 r->ioid);
617 }
618
619
620 list_add(&c->link, &r->chunk_list.head);
621
622 *c_out = c;
623 DBG("%s: end\n", __func__);
624 return 0;
625
626fail_map:
627 for (iopage--; 0 <= iopage; iopage--) {
628 lv1_put_iopte(0,
629 c->bus_addr + offset,
630 c->lpar_addr + offset,
631 r->ioid,
632 0);
633 }
634 kfree(c);
635fail_alloc:
636 *c_out = NULL;
637 return result;
638}
639
640
641
642
643
644
645
646
647
648static int dma_sb_region_create(struct ps3_dma_region *r)
649{
650 int result;
651 u64 bus_addr;
652
653 DBG(" -> %s:%d:\n", __func__, __LINE__);
654
655 BUG_ON(!r);
656
657 if (!r->dev->bus_id) {
658 pr_info("%s:%d: %llu:%llu no dma\n", __func__, __LINE__,
659 r->dev->bus_id, r->dev->dev_id);
660 return 0;
661 }
662
663 DBG("%s:%u: len = 0x%lx, page_size = %u, offset = 0x%lx\n", __func__,
664 __LINE__, r->len, r->page_size, r->offset);
665
666 BUG_ON(!r->len);
667 BUG_ON(!r->page_size);
668 BUG_ON(!r->region_ops);
669
670 INIT_LIST_HEAD(&r->chunk_list.head);
671 spin_lock_init(&r->chunk_list.lock);
672
673 result = lv1_allocate_device_dma_region(r->dev->bus_id, r->dev->dev_id,
674 roundup_pow_of_two(r->len), r->page_size, r->region_type,
675 &bus_addr);
676 r->bus_addr = bus_addr;
677
678 if (result) {
679 DBG("%s:%d: lv1_allocate_device_dma_region failed: %s\n",
680 __func__, __LINE__, ps3_result(result));
681 r->len = r->bus_addr = 0;
682 }
683
684 return result;
685}
686
687static int dma_ioc0_region_create(struct ps3_dma_region *r)
688{
689 int result;
690 u64 bus_addr;
691
692 INIT_LIST_HEAD(&r->chunk_list.head);
693 spin_lock_init(&r->chunk_list.lock);
694
695 result = lv1_allocate_io_segment(0,
696 r->len,
697 r->page_size,
698 &bus_addr);
699 r->bus_addr = bus_addr;
700 if (result) {
701 DBG("%s:%d: lv1_allocate_io_segment failed: %s\n",
702 __func__, __LINE__, ps3_result(result));
703 r->len = r->bus_addr = 0;
704 }
705 DBG("%s: len=%#lx, pg=%d, bus=%#lx\n", __func__,
706 r->len, r->page_size, r->bus_addr);
707 return result;
708}
709
710
711
712
713
714
715
716
717
718static int dma_sb_region_free(struct ps3_dma_region *r)
719{
720 int result;
721 struct dma_chunk *c;
722 struct dma_chunk *tmp;
723
724 BUG_ON(!r);
725
726 if (!r->dev->bus_id) {
727 pr_info("%s:%d: %llu:%llu no dma\n", __func__, __LINE__,
728 r->dev->bus_id, r->dev->dev_id);
729 return 0;
730 }
731
732 list_for_each_entry_safe(c, tmp, &r->chunk_list.head, link) {
733 list_del(&c->link);
734 dma_sb_free_chunk(c);
735 }
736
737 result = lv1_free_device_dma_region(r->dev->bus_id, r->dev->dev_id,
738 r->bus_addr);
739
740 if (result)
741 DBG("%s:%d: lv1_free_device_dma_region failed: %s\n",
742 __func__, __LINE__, ps3_result(result));
743
744 r->bus_addr = 0;
745
746 return result;
747}
748
749static int dma_ioc0_region_free(struct ps3_dma_region *r)
750{
751 int result;
752 struct dma_chunk *c, *n;
753
754 DBG("%s: start\n", __func__);
755 list_for_each_entry_safe(c, n, &r->chunk_list.head, link) {
756 list_del(&c->link);
757 dma_ioc0_free_chunk(c);
758 }
759
760 result = lv1_release_io_segment(0, r->bus_addr);
761
762 if (result)
763 DBG("%s:%d: lv1_free_device_dma_region failed: %s\n",
764 __func__, __LINE__, ps3_result(result));
765
766 r->bus_addr = 0;
767 DBG("%s: end\n", __func__);
768
769 return result;
770}
771
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781
782
783static int dma_sb_map_area(struct ps3_dma_region *r, unsigned long virt_addr,
784 unsigned long len, dma_addr_t *bus_addr,
785 u64 iopte_flag)
786{
787 int result;
788 unsigned long flags;
789 struct dma_chunk *c;
790 unsigned long phys_addr = is_kernel_addr(virt_addr) ? __pa(virt_addr)
791 : virt_addr;
792 unsigned long aligned_phys = _ALIGN_DOWN(phys_addr, 1 << r->page_size);
793 unsigned long aligned_len = _ALIGN_UP(len + phys_addr - aligned_phys,
794 1 << r->page_size);
795 *bus_addr = dma_sb_lpar_to_bus(r, ps3_mm_phys_to_lpar(phys_addr));
796
797 if (!USE_DYNAMIC_DMA) {
798 unsigned long lpar_addr = ps3_mm_phys_to_lpar(phys_addr);
799 DBG(" -> %s:%d\n", __func__, __LINE__);
800 DBG("%s:%d virt_addr %lxh\n", __func__, __LINE__,
801 virt_addr);
802 DBG("%s:%d phys_addr %lxh\n", __func__, __LINE__,
803 phys_addr);
804 DBG("%s:%d lpar_addr %lxh\n", __func__, __LINE__,
805 lpar_addr);
806 DBG("%s:%d len %lxh\n", __func__, __LINE__, len);
807 DBG("%s:%d bus_addr %llxh (%lxh)\n", __func__, __LINE__,
808 *bus_addr, len);
809 }
810
811 spin_lock_irqsave(&r->chunk_list.lock, flags);
812 c = dma_find_chunk(r, *bus_addr, len);
813
814 if (c) {
815 DBG("%s:%d: reusing mapped chunk", __func__, __LINE__);
816 dma_dump_chunk(c);
817 c->usage_count++;
818 spin_unlock_irqrestore(&r->chunk_list.lock, flags);
819 return 0;
820 }
821
822 result = dma_sb_map_pages(r, aligned_phys, aligned_len, &c, iopte_flag);
823
824 if (result) {
825 *bus_addr = 0;
826 DBG("%s:%d: dma_sb_map_pages failed (%d)\n",
827 __func__, __LINE__, result);
828 spin_unlock_irqrestore(&r->chunk_list.lock, flags);
829 return result;
830 }
831
832 c->usage_count = 1;
833
834 spin_unlock_irqrestore(&r->chunk_list.lock, flags);
835 return result;
836}
837
838static int dma_ioc0_map_area(struct ps3_dma_region *r, unsigned long virt_addr,
839 unsigned long len, dma_addr_t *bus_addr,
840 u64 iopte_flag)
841{
842 int result;
843 unsigned long flags;
844 struct dma_chunk *c;
845 unsigned long phys_addr = is_kernel_addr(virt_addr) ? __pa(virt_addr)
846 : virt_addr;
847 unsigned long aligned_phys = _ALIGN_DOWN(phys_addr, 1 << r->page_size);
848 unsigned long aligned_len = _ALIGN_UP(len + phys_addr - aligned_phys,
849 1 << r->page_size);
850
851 DBG(KERN_ERR "%s: vaddr=%#lx, len=%#lx\n", __func__,
852 virt_addr, len);
853 DBG(KERN_ERR "%s: ph=%#lx a_ph=%#lx a_l=%#lx\n", __func__,
854 phys_addr, aligned_phys, aligned_len);
855
856 spin_lock_irqsave(&r->chunk_list.lock, flags);
857 c = dma_find_chunk_lpar(r, ps3_mm_phys_to_lpar(phys_addr), len);
858
859 if (c) {
860
861 BUG();
862 *bus_addr = c->bus_addr + phys_addr - aligned_phys;
863 c->usage_count++;
864 spin_unlock_irqrestore(&r->chunk_list.lock, flags);
865 return 0;
866 }
867
868 result = dma_ioc0_map_pages(r, aligned_phys, aligned_len, &c,
869 iopte_flag);
870
871 if (result) {
872 *bus_addr = 0;
873 DBG("%s:%d: dma_ioc0_map_pages failed (%d)\n",
874 __func__, __LINE__, result);
875 spin_unlock_irqrestore(&r->chunk_list.lock, flags);
876 return result;
877 }
878 *bus_addr = c->bus_addr + phys_addr - aligned_phys;
879 DBG("%s: va=%#lx pa=%#lx a_pa=%#lx bus=%#llx\n", __func__,
880 virt_addr, phys_addr, aligned_phys, *bus_addr);
881 c->usage_count = 1;
882
883 spin_unlock_irqrestore(&r->chunk_list.lock, flags);
884 return result;
885}
886
887
888
889
890
891
892
893
894
895
896static int dma_sb_unmap_area(struct ps3_dma_region *r, dma_addr_t bus_addr,
897 unsigned long len)
898{
899 unsigned long flags;
900 struct dma_chunk *c;
901
902 spin_lock_irqsave(&r->chunk_list.lock, flags);
903 c = dma_find_chunk(r, bus_addr, len);
904
905 if (!c) {
906 unsigned long aligned_bus = _ALIGN_DOWN(bus_addr,
907 1 << r->page_size);
908 unsigned long aligned_len = _ALIGN_UP(len + bus_addr
909 - aligned_bus, 1 << r->page_size);
910 DBG("%s:%d: not found: bus_addr %llxh\n",
911 __func__, __LINE__, bus_addr);
912 DBG("%s:%d: not found: len %lxh\n",
913 __func__, __LINE__, len);
914 DBG("%s:%d: not found: aligned_bus %lxh\n",
915 __func__, __LINE__, aligned_bus);
916 DBG("%s:%d: not found: aligned_len %lxh\n",
917 __func__, __LINE__, aligned_len);
918 BUG();
919 }
920
921 c->usage_count--;
922
923 if (!c->usage_count) {
924 list_del(&c->link);
925 dma_sb_free_chunk(c);
926 }
927
928 spin_unlock_irqrestore(&r->chunk_list.lock, flags);
929 return 0;
930}
931
932static int dma_ioc0_unmap_area(struct ps3_dma_region *r,
933 dma_addr_t bus_addr, unsigned long len)
934{
935 unsigned long flags;
936 struct dma_chunk *c;
937
938 DBG("%s: start a=%#llx l=%#lx\n", __func__, bus_addr, len);
939 spin_lock_irqsave(&r->chunk_list.lock, flags);
940 c = dma_find_chunk(r, bus_addr, len);
941
942 if (!c) {
943 unsigned long aligned_bus = _ALIGN_DOWN(bus_addr,
944 1 << r->page_size);
945 unsigned long aligned_len = _ALIGN_UP(len + bus_addr
946 - aligned_bus,
947 1 << r->page_size);
948 DBG("%s:%d: not found: bus_addr %llxh\n",
949 __func__, __LINE__, bus_addr);
950 DBG("%s:%d: not found: len %lxh\n",
951 __func__, __LINE__, len);
952 DBG("%s:%d: not found: aligned_bus %lxh\n",
953 __func__, __LINE__, aligned_bus);
954 DBG("%s:%d: not found: aligned_len %lxh\n",
955 __func__, __LINE__, aligned_len);
956 BUG();
957 }
958
959 c->usage_count--;
960
961 if (!c->usage_count) {
962 list_del(&c->link);
963 dma_ioc0_free_chunk(c);
964 }
965
966 spin_unlock_irqrestore(&r->chunk_list.lock, flags);
967 DBG("%s: end\n", __func__);
968 return 0;
969}
970
971
972
973
974
975
976
977
978
979static int dma_sb_region_create_linear(struct ps3_dma_region *r)
980{
981 int result;
982 unsigned long virt_addr, len;
983 dma_addr_t tmp;
984
985 if (r->len > 16*1024*1024) {
986
987 if (r->page_size != PS3_DMA_16M) {
988 pr_info("%s:%d: forcing 16M pages for linear map\n",
989 __func__, __LINE__);
990 r->page_size = PS3_DMA_16M;
991 r->len = _ALIGN_UP(r->len, 1 << r->page_size);
992 }
993 }
994
995 result = dma_sb_region_create(r);
996 BUG_ON(result);
997
998 if (r->offset < map.rm.size) {
999
1000 virt_addr = map.rm.base + r->offset;
1001 len = map.rm.size - r->offset;
1002 if (len > r->len)
1003 len = r->len;
1004 result = dma_sb_map_area(r, virt_addr, len, &tmp,
1005 CBE_IOPTE_PP_W | CBE_IOPTE_PP_R | CBE_IOPTE_SO_RW |
1006 CBE_IOPTE_M);
1007 BUG_ON(result);
1008 }
1009
1010 if (r->offset + r->len > map.rm.size) {
1011
1012 virt_addr = map.rm.size;
1013 len = r->len;
1014 if (r->offset >= map.rm.size)
1015 virt_addr += r->offset - map.rm.size;
1016 else
1017 len -= map.rm.size - r->offset;
1018 result = dma_sb_map_area(r, virt_addr, len, &tmp,
1019 CBE_IOPTE_PP_W | CBE_IOPTE_PP_R | CBE_IOPTE_SO_RW |
1020 CBE_IOPTE_M);
1021 BUG_ON(result);
1022 }
1023
1024 return result;
1025}
1026
1027
1028
1029
1030
1031
1032
1033
1034static int dma_sb_region_free_linear(struct ps3_dma_region *r)
1035{
1036 int result;
1037 dma_addr_t bus_addr;
1038 unsigned long len, lpar_addr;
1039
1040 if (r->offset < map.rm.size) {
1041
1042 lpar_addr = map.rm.base + r->offset;
1043 len = map.rm.size - r->offset;
1044 if (len > r->len)
1045 len = r->len;
1046 bus_addr = dma_sb_lpar_to_bus(r, lpar_addr);
1047 result = dma_sb_unmap_area(r, bus_addr, len);
1048 BUG_ON(result);
1049 }
1050
1051 if (r->offset + r->len > map.rm.size) {
1052
1053 lpar_addr = map.r1.base;
1054 len = r->len;
1055 if (r->offset >= map.rm.size)
1056 lpar_addr += r->offset - map.rm.size;
1057 else
1058 len -= map.rm.size - r->offset;
1059 bus_addr = dma_sb_lpar_to_bus(r, lpar_addr);
1060 result = dma_sb_unmap_area(r, bus_addr, len);
1061 BUG_ON(result);
1062 }
1063
1064 result = dma_sb_region_free(r);
1065 BUG_ON(result);
1066
1067 return result;
1068}
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082static int dma_sb_map_area_linear(struct ps3_dma_region *r,
1083 unsigned long virt_addr, unsigned long len, dma_addr_t *bus_addr,
1084 u64 iopte_flag)
1085{
1086 unsigned long phys_addr = is_kernel_addr(virt_addr) ? __pa(virt_addr)
1087 : virt_addr;
1088 *bus_addr = dma_sb_lpar_to_bus(r, ps3_mm_phys_to_lpar(phys_addr));
1089 return 0;
1090}
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101static int dma_sb_unmap_area_linear(struct ps3_dma_region *r,
1102 dma_addr_t bus_addr, unsigned long len)
1103{
1104 return 0;
1105};
1106
1107static const struct ps3_dma_region_ops ps3_dma_sb_region_ops = {
1108 .create = dma_sb_region_create,
1109 .free = dma_sb_region_free,
1110 .map = dma_sb_map_area,
1111 .unmap = dma_sb_unmap_area
1112};
1113
1114static const struct ps3_dma_region_ops ps3_dma_sb_region_linear_ops = {
1115 .create = dma_sb_region_create_linear,
1116 .free = dma_sb_region_free_linear,
1117 .map = dma_sb_map_area_linear,
1118 .unmap = dma_sb_unmap_area_linear
1119};
1120
1121static const struct ps3_dma_region_ops ps3_dma_ioc0_region_ops = {
1122 .create = dma_ioc0_region_create,
1123 .free = dma_ioc0_region_free,
1124 .map = dma_ioc0_map_area,
1125 .unmap = dma_ioc0_unmap_area
1126};
1127
1128int ps3_dma_region_init(struct ps3_system_bus_device *dev,
1129 struct ps3_dma_region *r, enum ps3_dma_page_size page_size,
1130 enum ps3_dma_region_type region_type, void *addr, unsigned long len)
1131{
1132 unsigned long lpar_addr;
1133
1134 lpar_addr = addr ? ps3_mm_phys_to_lpar(__pa(addr)) : 0;
1135
1136 r->dev = dev;
1137 r->page_size = page_size;
1138 r->region_type = region_type;
1139 r->offset = lpar_addr;
1140 if (r->offset >= map.rm.size)
1141 r->offset -= map.r1.offset;
1142 r->len = len ? len : _ALIGN_UP(map.total, 1 << r->page_size);
1143
1144 switch (dev->dev_type) {
1145 case PS3_DEVICE_TYPE_SB:
1146 r->region_ops = (USE_DYNAMIC_DMA)
1147 ? &ps3_dma_sb_region_ops
1148 : &ps3_dma_sb_region_linear_ops;
1149 break;
1150 case PS3_DEVICE_TYPE_IOC0:
1151 r->region_ops = &ps3_dma_ioc0_region_ops;
1152 break;
1153 default:
1154 BUG();
1155 return -EINVAL;
1156 }
1157 return 0;
1158}
1159EXPORT_SYMBOL(ps3_dma_region_init);
1160
1161int ps3_dma_region_create(struct ps3_dma_region *r)
1162{
1163 BUG_ON(!r);
1164 BUG_ON(!r->region_ops);
1165 BUG_ON(!r->region_ops->create);
1166 return r->region_ops->create(r);
1167}
1168EXPORT_SYMBOL(ps3_dma_region_create);
1169
1170int ps3_dma_region_free(struct ps3_dma_region *r)
1171{
1172 BUG_ON(!r);
1173 BUG_ON(!r->region_ops);
1174 BUG_ON(!r->region_ops->free);
1175 return r->region_ops->free(r);
1176}
1177EXPORT_SYMBOL(ps3_dma_region_free);
1178
1179int ps3_dma_map(struct ps3_dma_region *r, unsigned long virt_addr,
1180 unsigned long len, dma_addr_t *bus_addr,
1181 u64 iopte_flag)
1182{
1183 return r->region_ops->map(r, virt_addr, len, bus_addr, iopte_flag);
1184}
1185
1186int ps3_dma_unmap(struct ps3_dma_region *r, dma_addr_t bus_addr,
1187 unsigned long len)
1188{
1189 return r->region_ops->unmap(r, bus_addr, len);
1190}
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200void __init ps3_mm_init(void)
1201{
1202 int result;
1203
1204 DBG(" -> %s:%d\n", __func__, __LINE__);
1205
1206 result = ps3_repository_read_mm_info(&map.rm.base, &map.rm.size,
1207 &map.total);
1208
1209 if (result)
1210 panic("ps3_repository_read_mm_info() failed");
1211
1212 map.rm.offset = map.rm.base;
1213 map.vas_id = map.htab_size = 0;
1214
1215
1216
1217 BUG_ON(map.rm.base);
1218 BUG_ON(!map.rm.size);
1219
1220
1221
1222 if (ps3_mm_get_repository_highmem(&map.r1)) {
1223 result = ps3_mm_region_create(&map.r1, map.total - map.rm.size);
1224
1225 if (!result)
1226 ps3_mm_set_repository_highmem(&map.r1);
1227 }
1228
1229
1230 map.total = map.rm.size + map.r1.size;
1231
1232 if (!map.r1.size) {
1233 DBG("%s:%d: No highmem region found\n", __func__, __LINE__);
1234 } else {
1235 DBG("%s:%d: Adding highmem region: %llxh %llxh\n",
1236 __func__, __LINE__, map.rm.size,
1237 map.total - map.rm.size);
1238 memblock_add(map.rm.size, map.total - map.rm.size);
1239 }
1240
1241 DBG(" <- %s:%d\n", __func__, __LINE__);
1242}
1243
1244
1245
1246
1247
1248void ps3_mm_shutdown(void)
1249{
1250 ps3_mm_region_destroy(&map.r1);
1251}
1252