1 /*
2 * Copyright 2018 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 #define gv100_dmaobj(p) container_of((p), struct gv100_dmaobj, base)
23 #include "user.h"
24
25 #include <core/client.h>
26 #include <core/gpuobj.h>
27 #include <subdev/fb.h>
28
29 #include <nvif/cl0002.h>
30 #include <nvif/unpack.h>
31
32 struct gv100_dmaobj {
33 struct nvkm_dmaobj base;
34 u32 flags0;
35 };
36
37 static int
gv100_dmaobj_bind(struct nvkm_dmaobj * base,struct nvkm_gpuobj * parent,int align,struct nvkm_gpuobj ** pgpuobj)38 gv100_dmaobj_bind(struct nvkm_dmaobj *base, struct nvkm_gpuobj *parent,
39 int align, struct nvkm_gpuobj **pgpuobj)
40 {
41 struct gv100_dmaobj *dmaobj = gv100_dmaobj(base);
42 struct nvkm_device *device = dmaobj->base.dma->engine.subdev.device;
43 u64 start = dmaobj->base.start >> 8;
44 u64 limit = dmaobj->base.limit >> 8;
45 int ret;
46
47 ret = nvkm_gpuobj_new(device, 24, align, false, parent, pgpuobj);
48 if (ret == 0) {
49 nvkm_kmap(*pgpuobj);
50 nvkm_wo32(*pgpuobj, 0x00, dmaobj->flags0);
51 nvkm_wo32(*pgpuobj, 0x04, lower_32_bits(start));
52 nvkm_wo32(*pgpuobj, 0x08, upper_32_bits(start));
53 nvkm_wo32(*pgpuobj, 0x0c, lower_32_bits(limit));
54 nvkm_wo32(*pgpuobj, 0x10, upper_32_bits(limit));
55 nvkm_done(*pgpuobj);
56 }
57
58 return ret;
59 }
60
61 static const struct nvkm_dmaobj_func
62 gv100_dmaobj_func = {
63 .bind = gv100_dmaobj_bind,
64 };
65
66 int
gv100_dmaobj_new(struct nvkm_dma * dma,const struct nvkm_oclass * oclass,void * data,u32 size,struct nvkm_dmaobj ** pdmaobj)67 gv100_dmaobj_new(struct nvkm_dma *dma, const struct nvkm_oclass *oclass,
68 void *data, u32 size, struct nvkm_dmaobj **pdmaobj)
69 {
70 union {
71 struct gf119_dma_v0 v0;
72 } *args;
73 struct nvkm_object *parent = oclass->parent;
74 struct gv100_dmaobj *dmaobj;
75 u32 kind, page;
76 int ret;
77
78 if (!(dmaobj = kzalloc(sizeof(*dmaobj), GFP_KERNEL)))
79 return -ENOMEM;
80 *pdmaobj = &dmaobj->base;
81
82 ret = nvkm_dmaobj_ctor(&gv100_dmaobj_func, dma, oclass,
83 &data, &size, &dmaobj->base);
84 if (ret)
85 return ret;
86
87 ret = -ENOSYS;
88 args = data;
89
90 nvif_ioctl(parent, "create gv100 dma size %d\n", size);
91 if (!(ret = nvif_unpack(ret, &data, &size, args->v0, 0, 0, false))) {
92 nvif_ioctl(parent,
93 "create gv100 dma vers %d page %d kind %02x\n",
94 args->v0.version, args->v0.page, args->v0.kind);
95 kind = args->v0.kind != 0;
96 page = args->v0.page != 0;
97 } else
98 if (size == 0) {
99 kind = 0;
100 page = GF119_DMA_V0_PAGE_SP;
101 } else
102 return ret;
103
104 if (kind)
105 dmaobj->flags0 |= 0x00100000;
106 if (page)
107 dmaobj->flags0 |= 0x00000040;
108 dmaobj->flags0 |= 0x00000004; /* rw */
109
110 switch (dmaobj->base.target) {
111 case NV_MEM_TARGET_VRAM : dmaobj->flags0 |= 0x00000001; break;
112 case NV_MEM_TARGET_PCI : dmaobj->flags0 |= 0x00000002; break;
113 case NV_MEM_TARGET_PCI_NOSNOOP: dmaobj->flags0 |= 0x00000003; break;
114 default:
115 return -EINVAL;
116 }
117
118 return 0;
119 }
120