1 /*
2 * Copyright 2017 Red Hat Inc.
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20 * OTHER DEALINGS IN THE SOFTWARE.
21 */
22 #include <nvif/mmu.h>
23
24 #include <nvif/class.h>
25 #include <nvif/if0008.h>
26
27 void
nvif_mmu_dtor(struct nvif_mmu * mmu)28 nvif_mmu_dtor(struct nvif_mmu *mmu)
29 {
30 kfree(mmu->kind);
31 kfree(mmu->type);
32 kfree(mmu->heap);
33 nvif_object_dtor(&mmu->object);
34 }
35
36 int
nvif_mmu_ctor(struct nvif_object * parent,const char * name,s32 oclass,struct nvif_mmu * mmu)37 nvif_mmu_ctor(struct nvif_object *parent, const char *name, s32 oclass,
38 struct nvif_mmu *mmu)
39 {
40 static const struct nvif_mclass mems[] = {
41 { NVIF_CLASS_MEM_GF100, -1 },
42 { NVIF_CLASS_MEM_NV50 , -1 },
43 { NVIF_CLASS_MEM_NV04 , -1 },
44 {}
45 };
46 struct nvif_mmu_v0 args;
47 int ret, i;
48
49 args.version = 0;
50 mmu->heap = NULL;
51 mmu->type = NULL;
52 mmu->kind = NULL;
53
54 ret = nvif_object_ctor(parent, name ? name : "nvifMmu", 0, oclass,
55 &args, sizeof(args), &mmu->object);
56 if (ret)
57 goto done;
58
59 mmu->dmabits = args.dmabits;
60 mmu->heap_nr = args.heap_nr;
61 mmu->type_nr = args.type_nr;
62 mmu->kind_nr = args.kind_nr;
63
64 ret = nvif_mclass(&mmu->object, mems);
65 if (ret < 0)
66 goto done;
67 mmu->mem = mems[ret].oclass;
68
69 mmu->heap = kmalloc_array(mmu->heap_nr, sizeof(*mmu->heap),
70 GFP_KERNEL);
71 mmu->type = kmalloc_array(mmu->type_nr, sizeof(*mmu->type),
72 GFP_KERNEL);
73 if (ret = -ENOMEM, !mmu->heap || !mmu->type)
74 goto done;
75
76 mmu->kind = kmalloc_array(mmu->kind_nr, sizeof(*mmu->kind),
77 GFP_KERNEL);
78 if (!mmu->kind && mmu->kind_nr)
79 goto done;
80
81 for (i = 0; i < mmu->heap_nr; i++) {
82 struct nvif_mmu_heap_v0 args = { .index = i };
83
84 ret = nvif_object_mthd(&mmu->object, NVIF_MMU_V0_HEAP,
85 &args, sizeof(args));
86 if (ret)
87 goto done;
88
89 mmu->heap[i].size = args.size;
90 }
91
92 for (i = 0; i < mmu->type_nr; i++) {
93 struct nvif_mmu_type_v0 args = { .index = i };
94
95 ret = nvif_object_mthd(&mmu->object, NVIF_MMU_V0_TYPE,
96 &args, sizeof(args));
97 if (ret)
98 goto done;
99
100 mmu->type[i].type = 0;
101 if (args.vram) mmu->type[i].type |= NVIF_MEM_VRAM;
102 if (args.host) mmu->type[i].type |= NVIF_MEM_HOST;
103 if (args.comp) mmu->type[i].type |= NVIF_MEM_COMP;
104 if (args.disp) mmu->type[i].type |= NVIF_MEM_DISP;
105 if (args.kind ) mmu->type[i].type |= NVIF_MEM_KIND;
106 if (args.mappable) mmu->type[i].type |= NVIF_MEM_MAPPABLE;
107 if (args.coherent) mmu->type[i].type |= NVIF_MEM_COHERENT;
108 if (args.uncached) mmu->type[i].type |= NVIF_MEM_UNCACHED;
109 mmu->type[i].heap = args.heap;
110 }
111
112 if (mmu->kind_nr) {
113 struct nvif_mmu_kind_v0 *kind;
114 size_t argc = struct_size(kind, data, mmu->kind_nr);
115
116 if (ret = -ENOMEM, !(kind = kmalloc(argc, GFP_KERNEL)))
117 goto done;
118 kind->version = 0;
119 kind->count = mmu->kind_nr;
120
121 ret = nvif_object_mthd(&mmu->object, NVIF_MMU_V0_KIND,
122 kind, argc);
123 if (ret == 0)
124 memcpy(mmu->kind, kind->data, kind->count);
125 mmu->kind_inv = kind->kind_inv;
126 kfree(kind);
127 }
128
129 done:
130 if (ret)
131 nvif_mmu_dtor(mmu);
132 return ret;
133 }
134