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1#include <linux/pagemap.h>
2#include <linux/slab.h>
3
4#include "nouveau_drm.h"
5#include "nouveau_ttm.h"
6
7struct nouveau_sgdma_be {
8 /* this has to be the first field so populate/unpopulated in
9 * nouve_bo.c works properly, otherwise have to move them here
10 */
11 struct ttm_dma_tt ttm;
12 struct nvkm_mem *node;
13};
14
15static void
16nouveau_sgdma_destroy(struct ttm_tt *ttm)
17{
18 struct nouveau_sgdma_be *nvbe = (struct nouveau_sgdma_be *)ttm;
19
20 if (ttm) {
21 ttm_dma_tt_fini(&nvbe->ttm);
22 kfree(nvbe);
23 }
24}
25
26static int
27nv04_sgdma_bind(struct ttm_tt *ttm, struct ttm_mem_reg *mem)
28{
29 struct nouveau_sgdma_be *nvbe = (struct nouveau_sgdma_be *)ttm;
30 struct nvkm_mem *node = mem->mm_node;
31
32 if (ttm->sg) {
33 node->sg = ttm->sg;
34 node->pages = NULL;
35 } else {
36 node->sg = NULL;
37 node->pages = nvbe->ttm.dma_address;
38 }
39 node->size = (mem->num_pages << PAGE_SHIFT) >> 12;
40
41 nvkm_vm_map(&node->vma[0], node);
42 nvbe->node = node;
43 return 0;
44}
45
46static int
47nv04_sgdma_unbind(struct ttm_tt *ttm)
48{
49 struct nouveau_sgdma_be *nvbe = (struct nouveau_sgdma_be *)ttm;
50 nvkm_vm_unmap(&nvbe->node->vma[0]);
51 return 0;
52}
53
54static struct ttm_backend_func nv04_sgdma_backend = {
55 .bind = nv04_sgdma_bind,
56 .unbind = nv04_sgdma_unbind,
57 .destroy = nouveau_sgdma_destroy
58};
59
60static int
61nv50_sgdma_bind(struct ttm_tt *ttm, struct ttm_mem_reg *mem)
62{
63 struct nouveau_sgdma_be *nvbe = (struct nouveau_sgdma_be *)ttm;
64 struct nvkm_mem *node = mem->mm_node;
65
66 /* noop: bound in move_notify() */
67 if (ttm->sg) {
68 node->sg = ttm->sg;
69 node->pages = NULL;
70 } else {
71 node->sg = NULL;
72 node->pages = nvbe->ttm.dma_address;
73 }
74 node->size = (mem->num_pages << PAGE_SHIFT) >> 12;
75 return 0;
76}
77
78static int
79nv50_sgdma_unbind(struct ttm_tt *ttm)
80{
81 /* noop: unbound in move_notify() */
82 return 0;
83}
84
85static struct ttm_backend_func nv50_sgdma_backend = {
86 .bind = nv50_sgdma_bind,
87 .unbind = nv50_sgdma_unbind,
88 .destroy = nouveau_sgdma_destroy
89};
90
91struct ttm_tt *
92nouveau_sgdma_create_ttm(struct ttm_bo_device *bdev,
93 unsigned long size, uint32_t page_flags,
94 struct page *dummy_read_page)
95{
96 struct nouveau_drm *drm = nouveau_bdev(bdev);
97 struct nouveau_sgdma_be *nvbe;
98
99 nvbe = kzalloc(sizeof(*nvbe), GFP_KERNEL);
100 if (!nvbe)
101 return NULL;
102
103 if (drm->device.info.family < NV_DEVICE_INFO_V0_TESLA)
104 nvbe->ttm.ttm.func = &nv04_sgdma_backend;
105 else
106 nvbe->ttm.ttm.func = &nv50_sgdma_backend;
107
108 if (ttm_dma_tt_init(&nvbe->ttm, bdev, size, page_flags, dummy_read_page))
109 /*
110 * A failing ttm_dma_tt_init() will call ttm_tt_destroy()
111 * and thus our nouveau_sgdma_destroy() hook, so we don't need
112 * to free nvbe here.
113 */
114 return NULL;
115 return &nvbe->ttm.ttm;
116}
1#include <linux/pagemap.h>
2#include <linux/slab.h>
3
4#include <subdev/fb.h>
5
6#include "nouveau_drm.h"
7#include "nouveau_ttm.h"
8
9struct nouveau_sgdma_be {
10 /* this has to be the first field so populate/unpopulated in
11 * nouve_bo.c works properly, otherwise have to move them here
12 */
13 struct ttm_dma_tt ttm;
14 struct drm_device *dev;
15 struct nouveau_mem *node;
16};
17
18static void
19nouveau_sgdma_destroy(struct ttm_tt *ttm)
20{
21 struct nouveau_sgdma_be *nvbe = (struct nouveau_sgdma_be *)ttm;
22
23 if (ttm) {
24 ttm_dma_tt_fini(&nvbe->ttm);
25 kfree(nvbe);
26 }
27}
28
29static int
30nv04_sgdma_bind(struct ttm_tt *ttm, struct ttm_mem_reg *mem)
31{
32 struct nouveau_sgdma_be *nvbe = (struct nouveau_sgdma_be *)ttm;
33 struct nouveau_mem *node = mem->mm_node;
34
35 if (ttm->sg) {
36 node->sg = ttm->sg;
37 node->pages = NULL;
38 } else {
39 node->sg = NULL;
40 node->pages = nvbe->ttm.dma_address;
41 }
42 node->size = (mem->num_pages << PAGE_SHIFT) >> 12;
43
44 nouveau_vm_map(&node->vma[0], node);
45 nvbe->node = node;
46 return 0;
47}
48
49static int
50nv04_sgdma_unbind(struct ttm_tt *ttm)
51{
52 struct nouveau_sgdma_be *nvbe = (struct nouveau_sgdma_be *)ttm;
53 nouveau_vm_unmap(&nvbe->node->vma[0]);
54 return 0;
55}
56
57static struct ttm_backend_func nv04_sgdma_backend = {
58 .bind = nv04_sgdma_bind,
59 .unbind = nv04_sgdma_unbind,
60 .destroy = nouveau_sgdma_destroy
61};
62
63static int
64nv50_sgdma_bind(struct ttm_tt *ttm, struct ttm_mem_reg *mem)
65{
66 struct nouveau_sgdma_be *nvbe = (struct nouveau_sgdma_be *)ttm;
67 struct nouveau_mem *node = mem->mm_node;
68
69 /* noop: bound in move_notify() */
70 if (ttm->sg) {
71 node->sg = ttm->sg;
72 node->pages = NULL;
73 } else {
74 node->sg = NULL;
75 node->pages = nvbe->ttm.dma_address;
76 }
77 node->size = (mem->num_pages << PAGE_SHIFT) >> 12;
78 return 0;
79}
80
81static int
82nv50_sgdma_unbind(struct ttm_tt *ttm)
83{
84 /* noop: unbound in move_notify() */
85 return 0;
86}
87
88static struct ttm_backend_func nv50_sgdma_backend = {
89 .bind = nv50_sgdma_bind,
90 .unbind = nv50_sgdma_unbind,
91 .destroy = nouveau_sgdma_destroy
92};
93
94struct ttm_tt *
95nouveau_sgdma_create_ttm(struct ttm_bo_device *bdev,
96 unsigned long size, uint32_t page_flags,
97 struct page *dummy_read_page)
98{
99 struct nouveau_drm *drm = nouveau_bdev(bdev);
100 struct nouveau_sgdma_be *nvbe;
101
102 nvbe = kzalloc(sizeof(*nvbe), GFP_KERNEL);
103 if (!nvbe)
104 return NULL;
105
106 nvbe->dev = drm->dev;
107 if (nv_device(drm->device)->card_type < NV_50)
108 nvbe->ttm.ttm.func = &nv04_sgdma_backend;
109 else
110 nvbe->ttm.ttm.func = &nv50_sgdma_backend;
111
112 if (ttm_dma_tt_init(&nvbe->ttm, bdev, size, page_flags, dummy_read_page))
113 return NULL;
114 return &nvbe->ttm.ttm;
115}