1 /* $NetBSD: nouveau_nvkm_engine_mpeg_nv44.c,v 1.3 2021/12/18 23:45:36 riastradh Exp $ */
2
3 /*
4 * Copyright 2012 Red Hat Inc.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
22 * OTHER DEALINGS IN THE SOFTWARE.
23 *
24 * Authors: Ben Skeggs
25 */
26 #include <sys/cdefs.h>
27 __KERNEL_RCSID(0, "$NetBSD: nouveau_nvkm_engine_mpeg_nv44.c,v 1.3 2021/12/18 23:45:36 riastradh Exp $");
28
29 #define nv44_mpeg(p) container_of((p), struct nv44_mpeg, engine)
30 #include "priv.h"
31
32 #include <core/client.h>
33 #include <core/gpuobj.h>
34 #include <engine/fifo.h>
35
36 #include <nvif/class.h>
37
38 struct nv44_mpeg {
39 struct nvkm_engine engine;
40 struct list_head chan;
41 };
42
43 /*******************************************************************************
44 * PMPEG context
45 ******************************************************************************/
46 #define nv44_mpeg_chan(p) container_of((p), struct nv44_mpeg_chan, object)
47
48 struct nv44_mpeg_chan {
49 struct nvkm_object object;
50 struct nv44_mpeg *mpeg;
51 struct nvkm_fifo_chan *fifo;
52 struct list_head head;
53 u32 inst;
54 };
55
56 static int
nv44_mpeg_chan_bind(struct nvkm_object * object,struct nvkm_gpuobj * parent,int align,struct nvkm_gpuobj ** pgpuobj)57 nv44_mpeg_chan_bind(struct nvkm_object *object, struct nvkm_gpuobj *parent,
58 int align, struct nvkm_gpuobj **pgpuobj)
59 {
60 struct nv44_mpeg_chan *chan = nv44_mpeg_chan(object);
61 int ret = nvkm_gpuobj_new(chan->object.engine->subdev.device, 264 * 4,
62 align, true, parent, pgpuobj);
63 if (ret == 0) {
64 chan->inst = (*pgpuobj)->addr;
65 nvkm_kmap(*pgpuobj);
66 nvkm_wo32(*pgpuobj, 0x78, 0x02001ec1);
67 nvkm_done(*pgpuobj);
68 }
69 return ret;
70 }
71
72 static int
nv44_mpeg_chan_fini(struct nvkm_object * object,bool suspend)73 nv44_mpeg_chan_fini(struct nvkm_object *object, bool suspend)
74 {
75
76 struct nv44_mpeg_chan *chan = nv44_mpeg_chan(object);
77 struct nv44_mpeg *mpeg = chan->mpeg;
78 struct nvkm_device *device = mpeg->engine.subdev.device;
79 u32 inst = 0x80000000 | (chan->inst >> 4);
80
81 nvkm_mask(device, 0x00b32c, 0x00000001, 0x00000000);
82 if (nvkm_rd32(device, 0x00b318) == inst)
83 nvkm_mask(device, 0x00b318, 0x80000000, 0x00000000);
84 nvkm_mask(device, 0x00b32c, 0x00000001, 0x00000001);
85 return 0;
86 }
87
88 static void *
nv44_mpeg_chan_dtor(struct nvkm_object * object)89 nv44_mpeg_chan_dtor(struct nvkm_object *object)
90 {
91 struct nv44_mpeg_chan *chan = nv44_mpeg_chan(object);
92 struct nv44_mpeg *mpeg = chan->mpeg;
93 unsigned long flags;
94 spin_lock_irqsave(&mpeg->engine.lock, flags);
95 list_del(&chan->head);
96 spin_unlock_irqrestore(&mpeg->engine.lock, flags);
97 return chan;
98 }
99
100 static const struct nvkm_object_func
101 nv44_mpeg_chan = {
102 .dtor = nv44_mpeg_chan_dtor,
103 .fini = nv44_mpeg_chan_fini,
104 .bind = nv44_mpeg_chan_bind,
105 };
106
107 static int
nv44_mpeg_chan_new(struct nvkm_fifo_chan * fifoch,const struct nvkm_oclass * oclass,struct nvkm_object ** pobject)108 nv44_mpeg_chan_new(struct nvkm_fifo_chan *fifoch,
109 const struct nvkm_oclass *oclass,
110 struct nvkm_object **pobject)
111 {
112 struct nv44_mpeg *mpeg = nv44_mpeg(oclass->engine);
113 struct nv44_mpeg_chan *chan;
114 unsigned long flags;
115
116 if (!(chan = kzalloc(sizeof(*chan), GFP_KERNEL)))
117 return -ENOMEM;
118 nvkm_object_ctor(&nv44_mpeg_chan, oclass, &chan->object);
119 chan->mpeg = mpeg;
120 chan->fifo = fifoch;
121 *pobject = &chan->object;
122
123 spin_lock_irqsave(&mpeg->engine.lock, flags);
124 list_add(&chan->head, &mpeg->chan);
125 spin_unlock_irqrestore(&mpeg->engine.lock, flags);
126 return 0;
127 }
128
129 /*******************************************************************************
130 * PMPEG engine/subdev functions
131 ******************************************************************************/
132
133 static bool
nv44_mpeg_mthd(struct nvkm_device * device,u32 mthd,u32 data)134 nv44_mpeg_mthd(struct nvkm_device *device, u32 mthd, u32 data)
135 {
136 switch (mthd) {
137 case 0x190:
138 case 0x1a0:
139 case 0x1b0:
140 return nv40_mpeg_mthd_dma(device, mthd, data);
141 default:
142 break;
143 }
144 return false;
145 }
146
147 static void
nv44_mpeg_intr(struct nvkm_engine * engine)148 nv44_mpeg_intr(struct nvkm_engine *engine)
149 {
150 struct nv44_mpeg *mpeg = nv44_mpeg(engine);
151 struct nvkm_subdev *subdev = &mpeg->engine.subdev;
152 struct nvkm_device *device = subdev->device;
153 struct nv44_mpeg_chan *temp, *chan = NULL;
154 unsigned long flags;
155 u32 inst = nvkm_rd32(device, 0x00b318) & 0x000fffff;
156 u32 stat = nvkm_rd32(device, 0x00b100);
157 u32 type = nvkm_rd32(device, 0x00b230);
158 u32 mthd = nvkm_rd32(device, 0x00b234);
159 u32 data = nvkm_rd32(device, 0x00b238);
160 u32 show = stat;
161
162 spin_lock_irqsave(&mpeg->engine.lock, flags);
163 list_for_each_entry(temp, &mpeg->chan, head) {
164 if (temp->inst >> 4 == inst) {
165 chan = temp;
166 list_del(&chan->head);
167 list_add(&chan->head, &mpeg->chan);
168 break;
169 }
170 }
171
172 if (stat & 0x01000000) {
173 /* happens on initial binding of the object */
174 if (type == 0x00000020 && mthd == 0x0000) {
175 nvkm_mask(device, 0x00b308, 0x00000000, 0x00000000);
176 show &= ~0x01000000;
177 }
178
179 if (type == 0x00000010) {
180 if (nv44_mpeg_mthd(subdev->device, mthd, data))
181 show &= ~0x01000000;
182 }
183 }
184
185 nvkm_wr32(device, 0x00b100, stat);
186 nvkm_wr32(device, 0x00b230, 0x00000001);
187
188 if (show) {
189 nvkm_error(subdev, "ch %d [%08x %s] %08x %08x %08x %08x\n",
190 chan ? chan->fifo->chid : -1, inst << 4,
191 chan ? chan->object.client->name : "unknown",
192 stat, type, mthd, data);
193 }
194
195 spin_unlock_irqrestore(&mpeg->engine.lock, flags);
196 }
197
198 static const struct nvkm_engine_func
199 nv44_mpeg = {
200 .init = nv31_mpeg_init,
201 .intr = nv44_mpeg_intr,
202 .tile = nv31_mpeg_tile,
203 .fifo.cclass = nv44_mpeg_chan_new,
204 .sclass = {
205 { -1, -1, NV31_MPEG, &nv31_mpeg_object },
206 {}
207 }
208 };
209
210 int
nv44_mpeg_new(struct nvkm_device * device,int index,struct nvkm_engine ** pmpeg)211 nv44_mpeg_new(struct nvkm_device *device, int index, struct nvkm_engine **pmpeg)
212 {
213 struct nv44_mpeg *mpeg;
214
215 if (!(mpeg = kzalloc(sizeof(*mpeg), GFP_KERNEL)))
216 return -ENOMEM;
217 INIT_LIST_HEAD(&mpeg->chan);
218 *pmpeg = &mpeg->engine;
219
220 return nvkm_engine_ctor(&nv44_mpeg, device, index, true, &mpeg->engine);
221 }
222