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 "channv04.h"
25 #include "regsnv04.h"
26
27 #include <core/client.h>
28 #include <core/ramht.h>
29 #include <subdev/instmem.h>
30
31 #include <nvif/class.h>
32 #include <nvif/cl006b.h>
33 #include <nvif/unpack.h>
34
35 static bool
nv40_fifo_dma_engine(struct nvkm_engine * engine,u32 * reg,u32 * ctx)36 nv40_fifo_dma_engine(struct nvkm_engine *engine, u32 *reg, u32 *ctx)
37 {
38 switch (engine->subdev.index) {
39 case NVKM_ENGINE_DMAOBJ:
40 case NVKM_ENGINE_SW:
41 return false;
42 case NVKM_ENGINE_GR:
43 *reg = 0x0032e0;
44 *ctx = 0x38;
45 return true;
46 case NVKM_ENGINE_MPEG:
47 if (engine->subdev.device->chipset < 0x44)
48 return false;
49 *reg = 0x00330c;
50 *ctx = 0x54;
51 return true;
52 default:
53 WARN_ON(1);
54 return false;
55 }
56 }
57
58 static int
nv40_fifo_dma_engine_fini(struct nvkm_fifo_chan * base,struct nvkm_engine * engine,bool suspend)59 nv40_fifo_dma_engine_fini(struct nvkm_fifo_chan *base,
60 struct nvkm_engine *engine, bool suspend)
61 {
62 struct nv04_fifo_chan *chan = nv04_fifo_chan(base);
63 struct nv04_fifo *fifo = chan->fifo;
64 struct nvkm_device *device = fifo->base.engine.subdev.device;
65 struct nvkm_instmem *imem = device->imem;
66 unsigned long flags;
67 u32 reg, ctx;
68 int chid;
69
70 if (!nv40_fifo_dma_engine(engine, ®, &ctx))
71 return 0;
72
73 spin_lock_irqsave(&fifo->base.lock, flags);
74 nvkm_mask(device, 0x002500, 0x00000001, 0x00000000);
75
76 chid = nvkm_rd32(device, 0x003204) & (fifo->base.nr - 1);
77 if (chid == chan->base.chid)
78 nvkm_wr32(device, reg, 0x00000000);
79 nvkm_kmap(imem->ramfc);
80 nvkm_wo32(imem->ramfc, chan->ramfc + ctx, 0x00000000);
81 nvkm_done(imem->ramfc);
82
83 nvkm_mask(device, 0x002500, 0x00000001, 0x00000001);
84 spin_unlock_irqrestore(&fifo->base.lock, flags);
85 return 0;
86 }
87
88 static int
nv40_fifo_dma_engine_init(struct nvkm_fifo_chan * base,struct nvkm_engine * engine)89 nv40_fifo_dma_engine_init(struct nvkm_fifo_chan *base,
90 struct nvkm_engine *engine)
91 {
92 struct nv04_fifo_chan *chan = nv04_fifo_chan(base);
93 struct nv04_fifo *fifo = chan->fifo;
94 struct nvkm_device *device = fifo->base.engine.subdev.device;
95 struct nvkm_instmem *imem = device->imem;
96 unsigned long flags;
97 u32 inst, reg, ctx;
98 int chid;
99
100 if (!nv40_fifo_dma_engine(engine, ®, &ctx))
101 return 0;
102 inst = chan->engn[engine->subdev.index]->addr >> 4;
103
104 spin_lock_irqsave(&fifo->base.lock, flags);
105 nvkm_mask(device, 0x002500, 0x00000001, 0x00000000);
106
107 chid = nvkm_rd32(device, 0x003204) & (fifo->base.nr - 1);
108 if (chid == chan->base.chid)
109 nvkm_wr32(device, reg, inst);
110 nvkm_kmap(imem->ramfc);
111 nvkm_wo32(imem->ramfc, chan->ramfc + ctx, inst);
112 nvkm_done(imem->ramfc);
113
114 nvkm_mask(device, 0x002500, 0x00000001, 0x00000001);
115 spin_unlock_irqrestore(&fifo->base.lock, flags);
116 return 0;
117 }
118
119 static void
nv40_fifo_dma_engine_dtor(struct nvkm_fifo_chan * base,struct nvkm_engine * engine)120 nv40_fifo_dma_engine_dtor(struct nvkm_fifo_chan *base,
121 struct nvkm_engine *engine)
122 {
123 struct nv04_fifo_chan *chan = nv04_fifo_chan(base);
124 nvkm_gpuobj_del(&chan->engn[engine->subdev.index]);
125 }
126
127 static int
nv40_fifo_dma_engine_ctor(struct nvkm_fifo_chan * base,struct nvkm_engine * engine,struct nvkm_object * object)128 nv40_fifo_dma_engine_ctor(struct nvkm_fifo_chan *base,
129 struct nvkm_engine *engine,
130 struct nvkm_object *object)
131 {
132 struct nv04_fifo_chan *chan = nv04_fifo_chan(base);
133 const int engn = engine->subdev.index;
134 u32 reg, ctx;
135
136 if (!nv40_fifo_dma_engine(engine, ®, &ctx))
137 return 0;
138
139 return nvkm_object_bind(object, NULL, 0, &chan->engn[engn]);
140 }
141
142 static int
nv40_fifo_dma_object_ctor(struct nvkm_fifo_chan * base,struct nvkm_object * object)143 nv40_fifo_dma_object_ctor(struct nvkm_fifo_chan *base,
144 struct nvkm_object *object)
145 {
146 struct nv04_fifo_chan *chan = nv04_fifo_chan(base);
147 struct nvkm_instmem *imem = chan->fifo->base.engine.subdev.device->imem;
148 u32 context = chan->base.chid << 23;
149 u32 handle = object->handle;
150 int hash;
151
152 switch (object->engine->subdev.index) {
153 case NVKM_ENGINE_DMAOBJ:
154 case NVKM_ENGINE_SW : context |= 0x00000000; break;
155 case NVKM_ENGINE_GR : context |= 0x00100000; break;
156 case NVKM_ENGINE_MPEG : context |= 0x00200000; break;
157 default:
158 WARN_ON(1);
159 return -EINVAL;
160 }
161
162 mutex_lock(&chan->fifo->base.engine.subdev.mutex);
163 hash = nvkm_ramht_insert(imem->ramht, object, chan->base.chid, 4,
164 handle, context);
165 mutex_unlock(&chan->fifo->base.engine.subdev.mutex);
166 return hash;
167 }
168
169 static const struct nvkm_fifo_chan_func
170 nv40_fifo_dma_func = {
171 .dtor = nv04_fifo_dma_dtor,
172 .init = nv04_fifo_dma_init,
173 .fini = nv04_fifo_dma_fini,
174 .engine_ctor = nv40_fifo_dma_engine_ctor,
175 .engine_dtor = nv40_fifo_dma_engine_dtor,
176 .engine_init = nv40_fifo_dma_engine_init,
177 .engine_fini = nv40_fifo_dma_engine_fini,
178 .object_ctor = nv40_fifo_dma_object_ctor,
179 .object_dtor = nv04_fifo_dma_object_dtor,
180 };
181
182 static int
nv40_fifo_dma_new(struct nvkm_fifo * base,const struct nvkm_oclass * oclass,void * data,u32 size,struct nvkm_object ** pobject)183 nv40_fifo_dma_new(struct nvkm_fifo *base, const struct nvkm_oclass *oclass,
184 void *data, u32 size, struct nvkm_object **pobject)
185 {
186 struct nvkm_object *parent = oclass->parent;
187 union {
188 struct nv03_channel_dma_v0 v0;
189 } *args = data;
190 struct nv04_fifo *fifo = nv04_fifo(base);
191 struct nv04_fifo_chan *chan = NULL;
192 struct nvkm_device *device = fifo->base.engine.subdev.device;
193 struct nvkm_instmem *imem = device->imem;
194 int ret = -ENOSYS;
195
196 nvif_ioctl(parent, "create channel dma size %d\n", size);
197 if (!(ret = nvif_unpack(ret, &data, &size, args->v0, 0, 0, false))) {
198 nvif_ioctl(parent, "create channel dma vers %d pushbuf %llx "
199 "offset %08x\n", args->v0.version,
200 args->v0.pushbuf, args->v0.offset);
201 if (!args->v0.pushbuf)
202 return -EINVAL;
203 } else
204 return ret;
205
206 if (!(chan = kzalloc(sizeof(*chan), GFP_KERNEL)))
207 return -ENOMEM;
208 *pobject = &chan->base.object;
209
210 ret = nvkm_fifo_chan_ctor(&nv40_fifo_dma_func, &fifo->base,
211 0x1000, 0x1000, false, 0, args->v0.pushbuf,
212 (1ULL << NVKM_ENGINE_DMAOBJ) |
213 (1ULL << NVKM_ENGINE_GR) |
214 (1ULL << NVKM_ENGINE_MPEG) |
215 (1ULL << NVKM_ENGINE_SW),
216 0, 0xc00000, 0x1000, oclass, &chan->base);
217 chan->fifo = fifo;
218 if (ret)
219 return ret;
220
221 args->v0.chid = chan->base.chid;
222 chan->ramfc = chan->base.chid * 128;
223
224 nvkm_kmap(imem->ramfc);
225 nvkm_wo32(imem->ramfc, chan->ramfc + 0x00, args->v0.offset);
226 nvkm_wo32(imem->ramfc, chan->ramfc + 0x04, args->v0.offset);
227 nvkm_wo32(imem->ramfc, chan->ramfc + 0x0c, chan->base.push->addr >> 4);
228 nvkm_wo32(imem->ramfc, chan->ramfc + 0x18, 0x30000000 |
229 NV_PFIFO_CACHE1_DMA_FETCH_TRIG_128_BYTES |
230 NV_PFIFO_CACHE1_DMA_FETCH_SIZE_128_BYTES |
231 #ifdef __BIG_ENDIAN
232 NV_PFIFO_CACHE1_BIG_ENDIAN |
233 #endif
234 NV_PFIFO_CACHE1_DMA_FETCH_MAX_REQS_8);
235 nvkm_wo32(imem->ramfc, chan->ramfc + 0x3c, 0x0001ffff);
236 nvkm_done(imem->ramfc);
237 return 0;
238 }
239
240 const struct nvkm_fifo_chan_oclass
241 nv40_fifo_dma_oclass = {
242 .base.oclass = NV40_CHANNEL_DMA,
243 .base.minver = 0,
244 .base.maxver = 0,
245 .ctor = nv40_fifo_dma_new,
246 };
247