1 | /* $NetBSD: nouveau_engine_dmaobj_base.c,v 1.1.1.1 2014/08/06 12:36:24 riastradh Exp $ */ |
2 | |
3 | /* |
4 | * Copyright 2012 Red Hat Inc. |
5 | * |
6 | * Permission is hereby granted, free of charge, to any person obtaining a |
7 | * copy of this software and associated documentation files (the "Software"), |
8 | * to deal in the Software without restriction, including without limitation |
9 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
10 | * and/or sell copies of the Software, and to permit persons to whom the |
11 | * Software is furnished to do so, subject to the following conditions: |
12 | * |
13 | * The above copyright notice and this permission notice shall be included in |
14 | * all copies or substantial portions of the Software. |
15 | * |
16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
19 | * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR |
20 | * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
21 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
22 | * OTHER DEALINGS IN THE SOFTWARE. |
23 | * |
24 | * Authors: Ben Skeggs |
25 | */ |
26 | |
27 | #include <sys/cdefs.h> |
28 | __KERNEL_RCSID(0, "$NetBSD: nouveau_engine_dmaobj_base.c,v 1.1.1.1 2014/08/06 12:36:24 riastradh Exp $" ); |
29 | |
30 | #include <core/object.h> |
31 | #include <core/class.h> |
32 | |
33 | #include <subdev/fb.h> |
34 | #include <engine/dmaobj.h> |
35 | |
36 | static int |
37 | nouveau_dmaobj_ctor(struct nouveau_object *parent, |
38 | struct nouveau_object *engine, |
39 | struct nouveau_oclass *oclass, void *data, u32 size, |
40 | struct nouveau_object **pobject) |
41 | { |
42 | struct nouveau_dmaeng *dmaeng = (void *)engine; |
43 | struct nouveau_dmaobj *dmaobj; |
44 | struct nouveau_gpuobj *gpuobj; |
45 | struct nv_dma_class *args = data; |
46 | int ret; |
47 | |
48 | if (size < sizeof(*args)) |
49 | return -EINVAL; |
50 | |
51 | ret = nouveau_object_create(parent, engine, oclass, 0, &dmaobj); |
52 | *pobject = nv_object(dmaobj); |
53 | if (ret) |
54 | return ret; |
55 | |
56 | switch (args->flags & NV_DMA_TARGET_MASK) { |
57 | case NV_DMA_TARGET_VM: |
58 | dmaobj->target = NV_MEM_TARGET_VM; |
59 | break; |
60 | case NV_DMA_TARGET_VRAM: |
61 | dmaobj->target = NV_MEM_TARGET_VRAM; |
62 | break; |
63 | case NV_DMA_TARGET_PCI: |
64 | dmaobj->target = NV_MEM_TARGET_PCI; |
65 | break; |
66 | case NV_DMA_TARGET_PCI_US: |
67 | case NV_DMA_TARGET_AGP: |
68 | dmaobj->target = NV_MEM_TARGET_PCI_NOSNOOP; |
69 | break; |
70 | default: |
71 | return -EINVAL; |
72 | } |
73 | |
74 | switch (args->flags & NV_DMA_ACCESS_MASK) { |
75 | case NV_DMA_ACCESS_VM: |
76 | dmaobj->access = NV_MEM_ACCESS_VM; |
77 | break; |
78 | case NV_DMA_ACCESS_RD: |
79 | dmaobj->access = NV_MEM_ACCESS_RO; |
80 | break; |
81 | case NV_DMA_ACCESS_WR: |
82 | dmaobj->access = NV_MEM_ACCESS_WO; |
83 | break; |
84 | case NV_DMA_ACCESS_RDWR: |
85 | dmaobj->access = NV_MEM_ACCESS_RW; |
86 | break; |
87 | default: |
88 | return -EINVAL; |
89 | } |
90 | |
91 | dmaobj->start = args->start; |
92 | dmaobj->limit = args->limit; |
93 | dmaobj->conf0 = args->conf0; |
94 | |
95 | switch (nv_mclass(parent)) { |
96 | case NV_DEVICE_CLASS: |
97 | /* delayed, or no, binding */ |
98 | break; |
99 | default: |
100 | ret = dmaeng->bind(dmaeng, *pobject, dmaobj, &gpuobj); |
101 | if (ret == 0) { |
102 | nouveau_object_ref(NULL, pobject); |
103 | *pobject = nv_object(gpuobj); |
104 | } |
105 | break; |
106 | } |
107 | |
108 | return ret; |
109 | } |
110 | |
111 | static struct nouveau_ofuncs |
112 | nouveau_dmaobj_ofuncs = { |
113 | .ctor = nouveau_dmaobj_ctor, |
114 | .dtor = nouveau_object_destroy, |
115 | .init = nouveau_object_init, |
116 | .fini = nouveau_object_fini, |
117 | }; |
118 | |
119 | struct nouveau_oclass |
120 | nouveau_dmaobj_sclass[] = { |
121 | { NV_DMA_FROM_MEMORY_CLASS, &nouveau_dmaobj_ofuncs }, |
122 | { NV_DMA_TO_MEMORY_CLASS, &nouveau_dmaobj_ofuncs }, |
123 | { NV_DMA_IN_MEMORY_CLASS, &nouveau_dmaobj_ofuncs }, |
124 | {} |
125 | }; |
126 | |