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 #include "changk104.h"
23 #include "cgrp.h"
24
25 #include <core/client.h>
26 #include <core/gpuobj.h>
27
28 #include <nvif/clc36f.h>
29 #include <nvif/unpack.h>
30
31 static u32
gv100_fifo_gpfifo_submit_token(struct nvkm_fifo_chan * chan)32 gv100_fifo_gpfifo_submit_token(struct nvkm_fifo_chan *chan)
33 {
34 return chan->chid;
35 }
36
37 static int
gv100_fifo_gpfifo_engine_valid(struct gk104_fifo_chan * chan,bool ce,bool valid)38 gv100_fifo_gpfifo_engine_valid(struct gk104_fifo_chan *chan, bool ce, bool valid)
39 {
40 struct nvkm_subdev *subdev = &chan->base.fifo->engine.subdev;
41 struct nvkm_device *device = subdev->device;
42 const u32 mask = ce ? 0x00020000 : 0x00010000;
43 const u32 data = valid ? mask : 0x00000000;
44 int ret;
45
46 /* Block runlist to prevent the channel from being rescheduled. */
47 mutex_lock(&subdev->mutex);
48 nvkm_mask(device, 0x002630, BIT(chan->runl), BIT(chan->runl));
49
50 /* Preempt the channel. */
51 ret = gk104_fifo_gpfifo_kick_locked(chan);
52 if (ret == 0) {
53 /* Update engine context validity. */
54 nvkm_kmap(chan->base.inst);
55 nvkm_mo32(chan->base.inst, 0x0ac, mask, data);
56 nvkm_done(chan->base.inst);
57 }
58
59 /* Resume runlist. */
60 nvkm_mask(device, 0x002630, BIT(chan->runl), 0);
61 mutex_unlock(&subdev->mutex);
62 return ret;
63 }
64
65 int
gv100_fifo_gpfifo_engine_fini(struct nvkm_fifo_chan * base,struct nvkm_engine * engine,bool suspend)66 gv100_fifo_gpfifo_engine_fini(struct nvkm_fifo_chan *base,
67 struct nvkm_engine *engine, bool suspend)
68 {
69 struct gk104_fifo_chan *chan = gk104_fifo_chan(base);
70 struct nvkm_gpuobj *inst = chan->base.inst;
71 int ret;
72
73 if (engine->subdev.index >= NVKM_ENGINE_CE0 &&
74 engine->subdev.index <= NVKM_ENGINE_CE_LAST)
75 return gk104_fifo_gpfifo_kick(chan);
76
77 ret = gv100_fifo_gpfifo_engine_valid(chan, false, false);
78 if (ret && suspend)
79 return ret;
80
81 nvkm_kmap(inst);
82 nvkm_wo32(inst, 0x0210, 0x00000000);
83 nvkm_wo32(inst, 0x0214, 0x00000000);
84 nvkm_done(inst);
85 return ret;
86 }
87
88 int
gv100_fifo_gpfifo_engine_init(struct nvkm_fifo_chan * base,struct nvkm_engine * engine)89 gv100_fifo_gpfifo_engine_init(struct nvkm_fifo_chan *base,
90 struct nvkm_engine *engine)
91 {
92 struct gk104_fifo_chan *chan = gk104_fifo_chan(base);
93 struct nvkm_gpuobj *inst = chan->base.inst;
94 u64 addr;
95
96 if (engine->subdev.index >= NVKM_ENGINE_CE0 &&
97 engine->subdev.index <= NVKM_ENGINE_CE_LAST)
98 return 0;
99
100 addr = chan->engn[engine->subdev.index].vma->addr;
101 nvkm_kmap(inst);
102 nvkm_wo32(inst, 0x210, lower_32_bits(addr) | 0x00000004);
103 nvkm_wo32(inst, 0x214, upper_32_bits(addr));
104 nvkm_done(inst);
105
106 return gv100_fifo_gpfifo_engine_valid(chan, false, true);
107 }
108
109 static const struct nvkm_fifo_chan_func
110 gv100_fifo_gpfifo = {
111 .dtor = gk104_fifo_gpfifo_dtor,
112 .init = gk104_fifo_gpfifo_init,
113 .fini = gk104_fifo_gpfifo_fini,
114 .ntfy = gf100_fifo_chan_ntfy,
115 .engine_ctor = gk104_fifo_gpfifo_engine_ctor,
116 .engine_dtor = gk104_fifo_gpfifo_engine_dtor,
117 .engine_init = gv100_fifo_gpfifo_engine_init,
118 .engine_fini = gv100_fifo_gpfifo_engine_fini,
119 .submit_token = gv100_fifo_gpfifo_submit_token,
120 };
121
122 int
gv100_fifo_gpfifo_new_(const struct nvkm_fifo_chan_func * func,struct gk104_fifo * fifo,u64 * runlists,u16 * chid,u64 vmm,u64 ioffset,u64 ilength,u64 * inst,bool priv,u32 * token,const struct nvkm_oclass * oclass,struct nvkm_object ** pobject)123 gv100_fifo_gpfifo_new_(const struct nvkm_fifo_chan_func *func,
124 struct gk104_fifo *fifo, u64 *runlists, u16 *chid,
125 u64 vmm, u64 ioffset, u64 ilength, u64 *inst, bool priv,
126 u32 *token, const struct nvkm_oclass *oclass,
127 struct nvkm_object **pobject)
128 {
129 struct nvkm_device *device = fifo->base.engine.subdev.device;
130 struct gk104_fifo_chan *chan;
131 int runlist = ffs(*runlists) -1, ret, i;
132 unsigned long engm;
133 u64 subdevs = 0;
134 u64 usermem, mthd;
135 u32 size;
136
137 if (!vmm || runlist < 0 || runlist >= fifo->runlist_nr)
138 return -EINVAL;
139 *runlists = BIT_ULL(runlist);
140
141 engm = fifo->runlist[runlist].engm;
142 for_each_set_bit(i, &engm, fifo->engine_nr) {
143 if (fifo->engine[i].engine)
144 subdevs |= BIT_ULL(fifo->engine[i].engine->subdev.index);
145 }
146
147 /* Allocate the channel. */
148 if (!(chan = kzalloc(sizeof(*chan), GFP_KERNEL)))
149 return -ENOMEM;
150 *pobject = &chan->base.object;
151 chan->fifo = fifo;
152 chan->runl = runlist;
153 INIT_LIST_HEAD(&chan->head);
154
155 ret = nvkm_fifo_chan_ctor(func, &fifo->base, 0x1000, 0x1000, true, vmm,
156 0, subdevs, 1, fifo->user.bar->addr, 0x200,
157 oclass, &chan->base);
158 if (ret)
159 return ret;
160
161 *chid = chan->base.chid;
162 *inst = chan->base.inst->addr;
163 *token = chan->base.func->submit_token(&chan->base);
164
165 /* Hack to support GPUs where even individual channels should be
166 * part of a channel group.
167 */
168 if (fifo->func->cgrp_force) {
169 if (!(chan->cgrp = kmalloc(sizeof(*chan->cgrp), GFP_KERNEL)))
170 return -ENOMEM;
171 chan->cgrp->id = chan->base.chid;
172 INIT_LIST_HEAD(&chan->cgrp->head);
173 INIT_LIST_HEAD(&chan->cgrp->chan);
174 chan->cgrp->chan_nr = 0;
175 }
176
177 /* Clear channel control registers. */
178 usermem = chan->base.chid * 0x200;
179 ilength = order_base_2(ilength / 8);
180
181 nvkm_kmap(fifo->user.mem);
182 for (i = 0; i < 0x200; i += 4)
183 nvkm_wo32(fifo->user.mem, usermem + i, 0x00000000);
184 nvkm_done(fifo->user.mem);
185 usermem = nvkm_memory_addr(fifo->user.mem) + usermem;
186
187 /* Allocate fault method buffer (magics come from nvgpu). */
188 size = nvkm_rd32(device, 0x104028); /* NV_PCE_PCE_MAP */
189 size = 27 * 5 * (((9 + 1 + 3) * hweight32(size)) + 2);
190 size = roundup(size, PAGE_SIZE);
191
192 ret = nvkm_memory_new(device, NVKM_MEM_TARGET_INST, size, 0x1000, true,
193 &chan->mthd);
194 if (ret)
195 return ret;
196
197 mthd = nvkm_memory_bar2(chan->mthd);
198 if (mthd == ~0ULL)
199 return -EFAULT;
200
201 /* RAMFC */
202 nvkm_kmap(chan->base.inst);
203 nvkm_wo32(chan->base.inst, 0x008, lower_32_bits(usermem));
204 nvkm_wo32(chan->base.inst, 0x00c, upper_32_bits(usermem));
205 nvkm_wo32(chan->base.inst, 0x010, 0x0000face);
206 nvkm_wo32(chan->base.inst, 0x030, 0x7ffff902);
207 nvkm_wo32(chan->base.inst, 0x048, lower_32_bits(ioffset));
208 nvkm_wo32(chan->base.inst, 0x04c, upper_32_bits(ioffset) |
209 (ilength << 16));
210 nvkm_wo32(chan->base.inst, 0x084, 0x20400000);
211 nvkm_wo32(chan->base.inst, 0x094, 0x30000001);
212 nvkm_wo32(chan->base.inst, 0x0e4, priv ? 0x00000020 : 0x00000000);
213 nvkm_wo32(chan->base.inst, 0x0e8, chan->base.chid);
214 nvkm_wo32(chan->base.inst, 0x0f4, 0x00001000);
215 nvkm_wo32(chan->base.inst, 0x0f8, 0x10003080);
216 nvkm_mo32(chan->base.inst, 0x218, 0x00000000, 0x00000000);
217 nvkm_wo32(chan->base.inst, 0x220, lower_32_bits(mthd));
218 nvkm_wo32(chan->base.inst, 0x224, upper_32_bits(mthd));
219 nvkm_done(chan->base.inst);
220 return gv100_fifo_gpfifo_engine_valid(chan, true, true);
221 }
222
223 int
gv100_fifo_gpfifo_new(struct gk104_fifo * fifo,const struct nvkm_oclass * oclass,void * data,u32 size,struct nvkm_object ** pobject)224 gv100_fifo_gpfifo_new(struct gk104_fifo *fifo, const struct nvkm_oclass *oclass,
225 void *data, u32 size, struct nvkm_object **pobject)
226 {
227 struct nvkm_object *parent = oclass->parent;
228 union {
229 struct volta_channel_gpfifo_a_v0 v0;
230 } *args = data;
231 int ret = -ENOSYS;
232
233 nvif_ioctl(parent, "create channel gpfifo size %d\n", size);
234 if (!(ret = nvif_unpack(ret, &data, &size, args->v0, 0, 0, false))) {
235 nvif_ioctl(parent, "create channel gpfifo vers %d vmm %llx "
236 "ioffset %016llx ilength %08x "
237 "runlist %016llx priv %d\n",
238 args->v0.version, args->v0.vmm, args->v0.ioffset,
239 args->v0.ilength, args->v0.runlist, args->v0.priv);
240 if (args->v0.priv && !oclass->client->super)
241 return -EINVAL;
242 return gv100_fifo_gpfifo_new_(&gv100_fifo_gpfifo, fifo,
243 &args->v0.runlist,
244 &args->v0.chid,
245 args->v0.vmm,
246 args->v0.ioffset,
247 args->v0.ilength,
248 &args->v0.inst,
249 args->v0.priv,
250 &args->v0.token,
251 oclass, pobject);
252 }
253
254 return ret;
255 }
256
