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1 | /* |
2 | * Copyright 2012 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 | * Authors: Ben Skeggs | |
23 | */ | |
42594600 | 24 | #include "nv04.h" |
3863c9bc | 25 | |
42594600 | 26 | #include <core/device.h> |
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27 | #include <core/gpuobj.h> |
28 | ||
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29 | #define NV04_PDMA_SIZE (128 * 1024 * 1024) |
30 | #define NV04_PDMA_PAGE ( 4 * 1024) | |
31 | ||
32 | /******************************************************************************* | |
33 | * VM map/unmap callbacks | |
34 | ******************************************************************************/ | |
35 | ||
36 | static void | |
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37 | nv04_vm_map_sg(struct nvkm_vma *vma, struct nvkm_gpuobj *pgt, |
38 | struct nvkm_mem *mem, u32 pte, u32 cnt, dma_addr_t *list) | |
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39 | { |
40 | pte = 0x00008 + (pte * 4); | |
41 | while (cnt) { | |
42 | u32 page = PAGE_SIZE / NV04_PDMA_PAGE; | |
43 | u32 phys = (u32)*list++; | |
44 | while (cnt && page--) { | |
45 | nv_wo32(pgt, pte, phys | 3); | |
46 | phys += NV04_PDMA_PAGE; | |
47 | pte += 4; | |
48 | cnt -= 1; | |
49 | } | |
50 | } | |
51 | } | |
52 | ||
53 | static void | |
42594600 | 54 | nv04_vm_unmap(struct nvkm_gpuobj *pgt, u32 pte, u32 cnt) |
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55 | { |
56 | pte = 0x00008 + (pte * 4); | |
57 | while (cnt--) { | |
58 | nv_wo32(pgt, pte, 0x00000000); | |
59 | pte += 4; | |
60 | } | |
61 | } | |
62 | ||
63 | static void | |
42594600 | 64 | nv04_vm_flush(struct nvkm_vm *vm) |
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65 | { |
66 | } | |
67 | ||
68 | /******************************************************************************* | |
69 | * VM object | |
70 | ******************************************************************************/ | |
71 | ||
72 | int | |
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73 | nv04_vm_create(struct nvkm_mmu *mmu, u64 offset, u64 length, u64 mmstart, |
74 | struct nvkm_vm **pvm) | |
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75 | { |
76 | return -EINVAL; | |
77 | } | |
78 | ||
79 | /******************************************************************************* | |
5ce3bf3c | 80 | * MMU subdev |
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81 | ******************************************************************************/ |
82 | ||
83 | static int | |
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84 | nv04_mmu_ctor(struct nvkm_object *parent, struct nvkm_object *engine, |
85 | struct nvkm_oclass *oclass, void *data, u32 size, | |
86 | struct nvkm_object **pobject) | |
3863c9bc | 87 | { |
5ce3bf3c | 88 | struct nv04_mmu_priv *priv; |
42594600 | 89 | struct nvkm_gpuobj *dma; |
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90 | int ret; |
91 | ||
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92 | ret = nvkm_mmu_create(parent, engine, oclass, "PCIGART", |
93 | "pcigart", &priv); | |
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94 | *pobject = nv_object(priv); |
95 | if (ret) | |
96 | return ret; | |
97 | ||
98 | priv->base.create = nv04_vm_create; | |
ebb945a9 | 99 | priv->base.limit = NV04_PDMA_SIZE; |
dc73b45a | 100 | priv->base.dma_bits = 32; |
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101 | priv->base.pgt_bits = 32 - 12; |
102 | priv->base.spg_shift = 12; | |
103 | priv->base.lpg_shift = 12; | |
104 | priv->base.map_sg = nv04_vm_map_sg; | |
105 | priv->base.unmap = nv04_vm_unmap; | |
106 | priv->base.flush = nv04_vm_flush; | |
107 | ||
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108 | ret = nvkm_vm_create(&priv->base, 0, NV04_PDMA_SIZE, 0, 4096, |
109 | &priv->vm); | |
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110 | if (ret) |
111 | return ret; | |
112 | ||
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113 | ret = nvkm_gpuobj_new(nv_object(priv), NULL, |
114 | (NV04_PDMA_SIZE / NV04_PDMA_PAGE) * 4 + 8, | |
115 | 16, NVOBJ_FLAG_ZERO_ALLOC, | |
116 | &priv->vm->pgt[0].obj[0]); | |
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117 | dma = priv->vm->pgt[0].obj[0]; |
118 | priv->vm->pgt[0].refcount[0] = 1; | |
119 | if (ret) | |
120 | return ret; | |
121 | ||
122 | nv_wo32(dma, 0x00000, 0x0002103d); /* PCI, RW, PT, !LN */ | |
123 | nv_wo32(dma, 0x00004, NV04_PDMA_SIZE - 1); | |
124 | return 0; | |
125 | } | |
126 | ||
127 | void | |
42594600 | 128 | nv04_mmu_dtor(struct nvkm_object *object) |
3863c9bc | 129 | { |
5ce3bf3c | 130 | struct nv04_mmu_priv *priv = (void *)object; |
3863c9bc | 131 | if (priv->vm) { |
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132 | nvkm_gpuobj_ref(NULL, &priv->vm->pgt[0].obj[0]); |
133 | nvkm_vm_ref(NULL, &priv->vm, NULL); | |
3863c9bc | 134 | } |
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135 | if (priv->nullp) { |
136 | pci_free_consistent(nv_device(priv)->pdev, 16 * 1024, | |
137 | priv->nullp, priv->null); | |
3863c9bc | 138 | } |
42594600 | 139 | nvkm_mmu_destroy(&priv->base); |
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140 | } |
141 | ||
42594600 | 142 | struct nvkm_oclass |
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143 | nv04_mmu_oclass = { |
144 | .handle = NV_SUBDEV(MMU, 0x04), | |
42594600 | 145 | .ofuncs = &(struct nvkm_ofuncs) { |
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146 | .ctor = nv04_mmu_ctor, |
147 | .dtor = nv04_mmu_dtor, | |
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148 | .init = _nvkm_mmu_init, |
149 | .fini = _nvkm_mmu_fini, | |
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150 | }, |
151 | }; |