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 */
24 #include "user.h"
25
26 #include <core/client.h>
27 #include <core/gpuobj.h>
28 #include <subdev/fb.h>
29
30 #include <nvif/cl0002.h>
31 #include <nvif/unpack.h>
32
33 static const struct nvkm_object_func nvkm_dmaobj_func;
34 struct nvkm_dmaobj *
nvkm_dmaobj_search(struct nvkm_client * client,u64 handle)35 nvkm_dmaobj_search(struct nvkm_client *client, u64 handle)
36 {
37 struct nvkm_object *object;
38
39 object = nvkm_object_search(client, handle, &nvkm_dmaobj_func);
40 if (IS_ERR(object))
41 return (void *)object;
42
43 return nvkm_dmaobj(object);
44 }
45
46 static int
nvkm_dmaobj_bind(struct nvkm_object * base,struct nvkm_gpuobj * gpuobj,int align,struct nvkm_gpuobj ** pgpuobj)47 nvkm_dmaobj_bind(struct nvkm_object *base, struct nvkm_gpuobj *gpuobj,
48 int align, struct nvkm_gpuobj **pgpuobj)
49 {
50 struct nvkm_dmaobj *dmaobj = nvkm_dmaobj(base);
51 return dmaobj->func->bind(dmaobj, gpuobj, align, pgpuobj);
52 }
53
54 static void *
nvkm_dmaobj_dtor(struct nvkm_object * base)55 nvkm_dmaobj_dtor(struct nvkm_object *base)
56 {
57 return nvkm_dmaobj(base);
58 }
59
60 static const struct nvkm_object_func
61 nvkm_dmaobj_func = {
62 .dtor = nvkm_dmaobj_dtor,
63 .bind = nvkm_dmaobj_bind,
64 };
65
66 int
nvkm_dmaobj_ctor(const struct nvkm_dmaobj_func * func,struct nvkm_dma * dma,const struct nvkm_oclass * oclass,void ** pdata,u32 * psize,struct nvkm_dmaobj * dmaobj)67 nvkm_dmaobj_ctor(const struct nvkm_dmaobj_func *func, struct nvkm_dma *dma,
68 const struct nvkm_oclass *oclass, void **pdata, u32 *psize,
69 struct nvkm_dmaobj *dmaobj)
70 {
71 union {
72 struct nv_dma_v0 v0;
73 } *args = *pdata;
74 struct nvkm_object *parent = oclass->parent;
75 void *data = *pdata;
76 u32 size = *psize;
77 int ret = -ENOSYS;
78
79 nvkm_object_ctor(&nvkm_dmaobj_func, oclass, &dmaobj->object);
80 dmaobj->func = func;
81 dmaobj->dma = dma;
82
83 nvif_ioctl(parent, "create dma size %d\n", *psize);
84 if (!(ret = nvif_unpack(ret, &data, &size, args->v0, 0, 0, true))) {
85 nvif_ioctl(parent, "create dma vers %d target %d access %d "
86 "start %016llx limit %016llx\n",
87 args->v0.version, args->v0.target, args->v0.access,
88 args->v0.start, args->v0.limit);
89 dmaobj->target = args->v0.target;
90 dmaobj->access = args->v0.access;
91 dmaobj->start = args->v0.start;
92 dmaobj->limit = args->v0.limit;
93 } else
94 return ret;
95
96 *pdata = data;
97 *psize = size;
98
99 if (dmaobj->start > dmaobj->limit)
100 return -EINVAL;
101
102 switch (dmaobj->target) {
103 case NV_DMA_V0_TARGET_VM:
104 dmaobj->target = NV_MEM_TARGET_VM;
105 break;
106 case NV_DMA_V0_TARGET_VRAM:
107 dmaobj->target = NV_MEM_TARGET_VRAM;
108 break;
109 case NV_DMA_V0_TARGET_PCI:
110 dmaobj->target = NV_MEM_TARGET_PCI;
111 break;
112 case NV_DMA_V0_TARGET_PCI_US:
113 case NV_DMA_V0_TARGET_AGP:
114 dmaobj->target = NV_MEM_TARGET_PCI_NOSNOOP;
115 break;
116 default:
117 return -EINVAL;
118 }
119
120 switch (dmaobj->access) {
121 case NV_DMA_V0_ACCESS_VM:
122 dmaobj->access = NV_MEM_ACCESS_VM;
123 break;
124 case NV_DMA_V0_ACCESS_RD:
125 dmaobj->access = NV_MEM_ACCESS_RO;
126 break;
127 case NV_DMA_V0_ACCESS_WR:
128 dmaobj->access = NV_MEM_ACCESS_WO;
129 break;
130 case NV_DMA_V0_ACCESS_RDWR:
131 dmaobj->access = NV_MEM_ACCESS_RW;
132 break;
133 default:
134 return -EINVAL;
135 }
136
137 return ret;
138 }
139