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 "ummu.h"
23 #include "umem.h"
24 #include "uvmm.h"
25
26 #include <core/client.h>
27
28 #include <nvif/if0008.h>
29 #include <nvif/unpack.h>
30
31 static int
nvkm_ummu_sclass(struct nvkm_object * object,int index,struct nvkm_oclass * oclass)32 nvkm_ummu_sclass(struct nvkm_object *object, int index,
33 struct nvkm_oclass *oclass)
34 {
35 struct nvkm_mmu *mmu = nvkm_ummu(object)->mmu;
36
37 if (mmu->func->mem.user.oclass && oclass->client->super) {
38 if (index-- == 0) {
39 oclass->base = mmu->func->mem.user;
40 oclass->ctor = nvkm_umem_new;
41 return 0;
42 }
43 }
44
45 if (mmu->func->vmm.user.oclass) {
46 if (index-- == 0) {
47 oclass->base = mmu->func->vmm.user;
48 oclass->ctor = nvkm_uvmm_new;
49 return 0;
50 }
51 }
52
53 return -EINVAL;
54 }
55
56 static int
nvkm_ummu_heap(struct nvkm_ummu * ummu,void * argv,u32 argc)57 nvkm_ummu_heap(struct nvkm_ummu *ummu, void *argv, u32 argc)
58 {
59 struct nvkm_mmu *mmu = ummu->mmu;
60 union {
61 struct nvif_mmu_heap_v0 v0;
62 } *args = argv;
63 int ret = -ENOSYS;
64 u8 index;
65
66 if (!(ret = nvif_unpack(ret, &argv, &argc, args->v0, 0, 0, false))) {
67 if ((index = args->v0.index) >= mmu->heap_nr)
68 return -EINVAL;
69 args->v0.size = mmu->heap[index].size;
70 } else
71 return ret;
72
73 return 0;
74 }
75
76 static int
nvkm_ummu_type(struct nvkm_ummu * ummu,void * argv,u32 argc)77 nvkm_ummu_type(struct nvkm_ummu *ummu, void *argv, u32 argc)
78 {
79 struct nvkm_mmu *mmu = ummu->mmu;
80 union {
81 struct nvif_mmu_type_v0 v0;
82 } *args = argv;
83 int ret = -ENOSYS;
84 u8 type, index;
85
86 if (!(ret = nvif_unpack(ret, &argv, &argc, args->v0, 0, 0, false))) {
87 if ((index = args->v0.index) >= mmu->type_nr)
88 return -EINVAL;
89 type = mmu->type[index].type;
90 args->v0.heap = mmu->type[index].heap;
91 args->v0.vram = !!(type & NVKM_MEM_VRAM);
92 args->v0.host = !!(type & NVKM_MEM_HOST);
93 args->v0.comp = !!(type & NVKM_MEM_COMP);
94 args->v0.disp = !!(type & NVKM_MEM_DISP);
95 args->v0.kind = !!(type & NVKM_MEM_KIND);
96 args->v0.mappable = !!(type & NVKM_MEM_MAPPABLE);
97 args->v0.coherent = !!(type & NVKM_MEM_COHERENT);
98 args->v0.uncached = !!(type & NVKM_MEM_UNCACHED);
99 } else
100 return ret;
101
102 return 0;
103 }
104
105 static int
nvkm_ummu_kind(struct nvkm_ummu * ummu,void * argv,u32 argc)106 nvkm_ummu_kind(struct nvkm_ummu *ummu, void *argv, u32 argc)
107 {
108 struct nvkm_mmu *mmu = ummu->mmu;
109 union {
110 struct nvif_mmu_kind_v0 v0;
111 } *args = argv;
112 const u8 *kind = NULL;
113 int ret = -ENOSYS, count = 0;
114
115 if (mmu->func->kind)
116 kind = mmu->func->kind(mmu, &count);
117
118 if (!(ret = nvif_unpack(ret, &argv, &argc, args->v0, 0, 0, true))) {
119 if (argc != args->v0.count * sizeof(*args->v0.data))
120 return -EINVAL;
121 if (args->v0.count > count)
122 return -EINVAL;
123 memcpy(args->v0.data, kind, args->v0.count);
124 } else
125 return ret;
126
127 return 0;
128 }
129
130 static int
nvkm_ummu_mthd(struct nvkm_object * object,u32 mthd,void * argv,u32 argc)131 nvkm_ummu_mthd(struct nvkm_object *object, u32 mthd, void *argv, u32 argc)
132 {
133 struct nvkm_ummu *ummu = nvkm_ummu(object);
134 switch (mthd) {
135 case NVIF_MMU_V0_HEAP: return nvkm_ummu_heap(ummu, argv, argc);
136 case NVIF_MMU_V0_TYPE: return nvkm_ummu_type(ummu, argv, argc);
137 case NVIF_MMU_V0_KIND: return nvkm_ummu_kind(ummu, argv, argc);
138 default:
139 break;
140 }
141 return -EINVAL;
142 }
143
144 static const struct nvkm_object_func
145 nvkm_ummu = {
146 .mthd = nvkm_ummu_mthd,
147 .sclass = nvkm_ummu_sclass,
148 };
149
150 int
nvkm_ummu_new(struct nvkm_device * device,const struct nvkm_oclass * oclass,void * argv,u32 argc,struct nvkm_object ** pobject)151 nvkm_ummu_new(struct nvkm_device *device, const struct nvkm_oclass *oclass,
152 void *argv, u32 argc, struct nvkm_object **pobject)
153 {
154 union {
155 struct nvif_mmu_v0 v0;
156 } *args = argv;
157 struct nvkm_mmu *mmu = device->mmu;
158 struct nvkm_ummu *ummu;
159 int ret = -ENOSYS, kinds = 0;
160
161 if (mmu->func->kind)
162 mmu->func->kind(mmu, &kinds);
163
164 if (!(ret = nvif_unpack(ret, &argv, &argc, args->v0, 0, 0, false))) {
165 args->v0.dmabits = mmu->dma_bits;
166 args->v0.heap_nr = mmu->heap_nr;
167 args->v0.type_nr = mmu->type_nr;
168 args->v0.kind_nr = kinds;
169 } else
170 return ret;
171
172 if (!(ummu = kzalloc(sizeof(*ummu), GFP_KERNEL)))
173 return -ENOMEM;
174 nvkm_object_ctor(&nvkm_ummu, oclass, &ummu->object);
175 ummu->mmu = mmu;
176 *pobject = &ummu->object;
177 return 0;
178 }
179
