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 #define nv50_dmaobj(p) container_of((p), struct nv50_dmaobj, base)
25 #include "user.h"
26
27 #include <core/client.h>
28 #include <core/gpuobj.h>
29 #include <subdev/fb.h>
30
31 #include <nvif/cl0002.h>
32 #include <nvif/unpack.h>
33
34 struct nv50_dmaobj {
35 struct nvkm_dmaobj base;
36 u32 flags0;
37 u32 flags5;
38 };
39
40 static int
nv50_dmaobj_bind(struct nvkm_dmaobj * base,struct nvkm_gpuobj * parent,int align,struct nvkm_gpuobj ** pgpuobj)41 nv50_dmaobj_bind(struct nvkm_dmaobj *base, struct nvkm_gpuobj *parent,
42 int align, struct nvkm_gpuobj **pgpuobj)
43 {
44 struct nv50_dmaobj *dmaobj = nv50_dmaobj(base);
45 struct nvkm_device *device = dmaobj->base.dma->engine.subdev.device;
46 int ret;
47
48 ret = nvkm_gpuobj_new(device, 24, align, false, parent, pgpuobj);
49 if (ret == 0) {
50 nvkm_kmap(*pgpuobj);
51 nvkm_wo32(*pgpuobj, 0x00, dmaobj->flags0);
52 nvkm_wo32(*pgpuobj, 0x04, lower_32_bits(dmaobj->base.limit));
53 nvkm_wo32(*pgpuobj, 0x08, lower_32_bits(dmaobj->base.start));
54 nvkm_wo32(*pgpuobj, 0x0c, upper_32_bits(dmaobj->base.limit) << 24 |
55 upper_32_bits(dmaobj->base.start));
56 nvkm_wo32(*pgpuobj, 0x10, 0x00000000);
57 nvkm_wo32(*pgpuobj, 0x14, dmaobj->flags5);
58 nvkm_done(*pgpuobj);
59 }
60
61 return ret;
62 }
63
64 static const struct nvkm_dmaobj_func
65 nv50_dmaobj_func = {
66 .bind = nv50_dmaobj_bind,
67 };
68
69 int
nv50_dmaobj_new(struct nvkm_dma * dma,const struct nvkm_oclass * oclass,void * data,u32 size,struct nvkm_dmaobj ** pdmaobj)70 nv50_dmaobj_new(struct nvkm_dma *dma, const struct nvkm_oclass *oclass,
71 void *data, u32 size, struct nvkm_dmaobj **pdmaobj)
72 {
73 union {
74 struct nv50_dma_v0 v0;
75 } *args;
76 struct nvkm_object *parent = oclass->parent;
77 struct nv50_dmaobj *dmaobj;
78 u32 user, part, comp, kind;
79 int ret;
80
81 if (!(dmaobj = kzalloc(sizeof(*dmaobj), GFP_KERNEL)))
82 return -ENOMEM;
83 *pdmaobj = &dmaobj->base;
84
85 ret = nvkm_dmaobj_ctor(&nv50_dmaobj_func, dma, oclass,
86 &data, &size, &dmaobj->base);
87 if (ret)
88 return ret;
89
90 ret = -ENOSYS;
91 args = data;
92
93 nvif_ioctl(parent, "create nv50 dma size %d\n", size);
94 if (!(ret = nvif_unpack(ret, &data, &size, args->v0, 0, 0, false))) {
95 nvif_ioctl(parent, "create nv50 dma vers %d priv %d part %d "
96 "comp %d kind %02x\n", args->v0.version,
97 args->v0.priv, args->v0.part, args->v0.comp,
98 args->v0.kind);
99 user = args->v0.priv;
100 part = args->v0.part;
101 comp = args->v0.comp;
102 kind = args->v0.kind;
103 } else
104 if (size == 0) {
105 if (dmaobj->base.target != NV_MEM_TARGET_VM) {
106 user = NV50_DMA_V0_PRIV_US;
107 part = NV50_DMA_V0_PART_256;
108 comp = NV50_DMA_V0_COMP_NONE;
109 kind = NV50_DMA_V0_KIND_PITCH;
110 } else {
111 user = NV50_DMA_V0_PRIV_VM;
112 part = NV50_DMA_V0_PART_VM;
113 comp = NV50_DMA_V0_COMP_VM;
114 kind = NV50_DMA_V0_KIND_VM;
115 }
116 } else
117 return ret;
118
119 if (user > 2 || part > 2 || comp > 3 || kind > 0x7f)
120 return -EINVAL;
121 dmaobj->flags0 = (comp << 29) | (kind << 22) | (user << 20) |
122 oclass->base.oclass;
123 dmaobj->flags5 = (part << 16);
124
125 switch (dmaobj->base.target) {
126 case NV_MEM_TARGET_VM:
127 dmaobj->flags0 |= 0x00000000;
128 break;
129 case NV_MEM_TARGET_VRAM:
130 dmaobj->flags0 |= 0x00010000;
131 break;
132 case NV_MEM_TARGET_PCI:
133 dmaobj->flags0 |= 0x00020000;
134 break;
135 case NV_MEM_TARGET_PCI_NOSNOOP:
136 dmaobj->flags0 |= 0x00030000;
137 break;
138 default:
139 return -EINVAL;
140 }
141
142 switch (dmaobj->base.access) {
143 case NV_MEM_ACCESS_VM:
144 break;
145 case NV_MEM_ACCESS_RO:
146 dmaobj->flags0 |= 0x00040000;
147 break;
148 case NV_MEM_ACCESS_WO:
149 case NV_MEM_ACCESS_RW:
150 dmaobj->flags0 |= 0x00080000;
151 break;
152 default:
153 return -EINVAL;
154 }
155
156 return 0;
157 }
158