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