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
33static int
34g84_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
50static const struct nvkm_object_func
51g84_cipher_oclass_func = {
52	.bind = g84_cipher_oclass_bind,
53};
54
55static int
56g84_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
64static const struct nvkm_object_func
65g84_cipher_cclass = {
66	.bind = g84_cipher_cclass_bind,
67};
68
69static const struct nvkm_bitfield
70g84_cipher_intr_mask[] = {
71	{ 0x00000001, "INVALID_STATE" },
72	{ 0x00000002, "ILLEGAL_MTHD" },
73	{ 0x00000004, "ILLEGAL_CLASS" },
74	{ 0x00000080, "QUERY" },
75	{ 0x00000100, "FAULT" },
76	{}
77};
78
79static void
80g84_cipher_intr(struct nvkm_engine *cipher)
81{
82	struct nvkm_subdev *subdev = &cipher->subdev;
83	struct nvkm_device *device = subdev->device;
84	struct nvkm_chan *chan;
85	u32 stat = nvkm_rd32(device, 0x102130);
86	u32 mthd = nvkm_rd32(device, 0x102190);
87	u32 data = nvkm_rd32(device, 0x102194);
88	u32 inst = nvkm_rd32(device, 0x102188) & 0x7fffffff;
89	unsigned long flags;
90	char msg[128];
91
92	chan = nvkm_chan_get_inst(cipher, (u64)inst << 12, &flags);
93	if (stat) {
94		nvkm_snprintbf(msg, sizeof(msg), g84_cipher_intr_mask, stat);
95		nvkm_error(subdev,  "%08x [%s] ch %d [%010llx %s] "
96				    "mthd %04x data %08x\n", stat, msg,
97			   chan ? chan->id : -1, (u64)inst << 12,
98			   chan ? chan->name : "unknown",
99			   mthd, data);
100	}
101	nvkm_chan_put(&chan, flags);
102
103	nvkm_wr32(device, 0x102130, stat);
104	nvkm_wr32(device, 0x10200c, 0x10);
105}
106
107static int
108g84_cipher_init(struct nvkm_engine *cipher)
109{
110	struct nvkm_device *device = cipher->subdev.device;
111	nvkm_wr32(device, 0x102130, 0xffffffff);
112	nvkm_wr32(device, 0x102140, 0xffffffbf);
113	nvkm_wr32(device, 0x10200c, 0x00000010);
114	return 0;
115}
116
117static const struct nvkm_engine_func
118g84_cipher = {
119	.init = g84_cipher_init,
120	.intr = g84_cipher_intr,
121	.cclass = &g84_cipher_cclass,
122	.sclass = {
123		{ -1, -1, NV74_CIPHER, &g84_cipher_oclass_func },
124		{}
125	}
126};
127
128int
129g84_cipher_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst,
130	       struct nvkm_engine **pengine)
131{
132	return nvkm_engine_new_(&g84_cipher, device, type, inst, true, pengine);
133}
134