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 <engine/cipher.h>
25 #include <engine/fifo.h>
26 
27 #include <core/client.h>
28 #include <core/enum.h>
29 #include <core/gpuobj.h>
30 
31 #include <nvif/class.h>
32 
33 static int
34 g84_cipher_oclass_bind(struct nvkm_object *object, struct nvkm_gpuobj *parent,
35 		       int align, struct nvkm_gpuobj **pgpuobj)
36 {
37 	int ret = nvkm_gpuobj_new(object->engine->subdev.device, 16,
38 				  align, false, parent, pgpuobj);
39 	if (ret == 0) {
40 		nvkm_kmap(*pgpuobj);
41 		nvkm_wo32(*pgpuobj, 0x00, object->oclass);
42 		nvkm_wo32(*pgpuobj, 0x04, 0x00000000);
43 		nvkm_wo32(*pgpuobj, 0x08, 0x00000000);
44 		nvkm_wo32(*pgpuobj, 0x0c, 0x00000000);
45 		nvkm_done(*pgpuobj);
46 	}
47 	return ret;
48 }
49 
50 static const struct nvkm_object_func
51 g84_cipher_oclass_func = {
52 	.bind = g84_cipher_oclass_bind,
53 };
54 
55 static int
56 g84_cipher_cclass_bind(struct nvkm_object *object, struct nvkm_gpuobj *parent,
57 		       int align, struct nvkm_gpuobj **pgpuobj)
58 {
59 	return nvkm_gpuobj_new(object->engine->subdev.device, 256,
60 			       align, true, parent, pgpuobj);
61 
62 }
63 
64 static const struct nvkm_object_func
65 g84_cipher_cclass = {
66 	.bind = g84_cipher_cclass_bind,
67 };
68 
69 static const struct nvkm_bitfield
70 g84_cipher_intr_mask[] = {
71 	{ 0x00000001, "INVALID_STATE" },
72 	{ 0x00000002, "ILLEGAL_MTHD" },
73 	{ 0x00000004, "ILLEGAL_CLASS" },
74 	{ 0x00000080, "QUERY" },
75 	{ 0x00000100, "FAULT" },
76 	{}
77 };
78 
79 static void
80 g84_cipher_intr(struct nvkm_engine *cipher)
81 {
82 	struct nvkm_subdev *subdev = &cipher->subdev;
83 	struct nvkm_device *device = subdev->device;
84 	struct nvkm_fifo *fifo = device->fifo;
85 	struct nvkm_fifo_chan *chan;
86 	u32 stat = nvkm_rd32(device, 0x102130);
87 	u32 mthd = nvkm_rd32(device, 0x102190);
88 	u32 data = nvkm_rd32(device, 0x102194);
89 	u32 inst = nvkm_rd32(device, 0x102188) & 0x7fffffff;
90 	unsigned long flags;
91 	char msg[128];
92 
93 	chan = nvkm_fifo_chan_inst(fifo, (u64)inst << 12, &flags);
94 	if (stat) {
95 		nvkm_snprintbf(msg, sizeof(msg), g84_cipher_intr_mask, stat);
96 		nvkm_error(subdev,  "%08x [%s] ch %d [%010llx %s] "
97 				    "mthd %04x data %08x\n", stat, msg,
98 			   chan ? chan->chid : -1, (u64)inst << 12,
99 			   chan ? chan->object.client->name : "unknown",
100 			   mthd, data);
101 	}
102 	nvkm_fifo_chan_put(fifo, flags, &chan);
103 
104 	nvkm_wr32(device, 0x102130, stat);
105 	nvkm_wr32(device, 0x10200c, 0x10);
106 }
107 
108 static int
109 g84_cipher_init(struct nvkm_engine *cipher)
110 {
111 	struct nvkm_device *device = cipher->subdev.device;
112 	nvkm_wr32(device, 0x102130, 0xffffffff);
113 	nvkm_wr32(device, 0x102140, 0xffffffbf);
114 	nvkm_wr32(device, 0x10200c, 0x00000010);
115 	return 0;
116 }
117 
118 static const struct nvkm_engine_func
119 g84_cipher = {
120 	.init = g84_cipher_init,
121 	.intr = g84_cipher_intr,
122 	.cclass = &g84_cipher_cclass,
123 	.sclass = {
124 		{ -1, -1, NV74_CIPHER, &g84_cipher_oclass_func },
125 		{}
126 	}
127 };
128 
129 int
130 g84_cipher_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst,
131 	       struct nvkm_engine **pengine)
132 {
133 	return nvkm_engine_new_(&g84_cipher, device, type, inst, true, pengine);
134 }
135