1 /*
2 * Copyright 2013 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 "priv.h"
25 #include "fuc/gt215.fuc3.h"
26
27 #include <subdev/timer.h>
28
29 int
gt215_pmu_send(struct nvkm_pmu * pmu,u32 reply[2],u32 process,u32 message,u32 data0,u32 data1)30 gt215_pmu_send(struct nvkm_pmu *pmu, u32 reply[2],
31 u32 process, u32 message, u32 data0, u32 data1)
32 {
33 struct nvkm_subdev *subdev = &pmu->subdev;
34 struct nvkm_device *device = subdev->device;
35 u32 addr;
36
37 mutex_lock(&pmu->send.mutex);
38 /* wait for a free slot in the fifo */
39 addr = nvkm_rd32(device, 0x10a4a0);
40 if (nvkm_msec(device, 2000,
41 u32 tmp = nvkm_rd32(device, 0x10a4b0);
42 if (tmp != (addr ^ 8))
43 break;
44 ) < 0) {
45 mutex_unlock(&pmu->send.mutex);
46 return -EBUSY;
47 }
48
49 /* we currently only support a single process at a time waiting
50 * on a synchronous reply, take the PMU mutex and tell the
51 * receive handler what we're waiting for
52 */
53 if (reply) {
54 pmu->recv.message = message;
55 pmu->recv.process = process;
56 }
57
58 /* acquire data segment access */
59 do {
60 nvkm_wr32(device, 0x10a580, 0x00000001);
61 } while (nvkm_rd32(device, 0x10a580) != 0x00000001);
62
63 /* write the packet */
64 nvkm_wr32(device, 0x10a1c0, 0x01000000 | (((addr & 0x07) << 4) +
65 pmu->send.base));
66 nvkm_wr32(device, 0x10a1c4, process);
67 nvkm_wr32(device, 0x10a1c4, message);
68 nvkm_wr32(device, 0x10a1c4, data0);
69 nvkm_wr32(device, 0x10a1c4, data1);
70 nvkm_wr32(device, 0x10a4a0, (addr + 1) & 0x0f);
71
72 /* release data segment access */
73 nvkm_wr32(device, 0x10a580, 0x00000000);
74
75 /* wait for reply, if requested */
76 if (reply) {
77 wait_event(pmu->recv.wait, (pmu->recv.process == 0));
78 reply[0] = pmu->recv.data[0];
79 reply[1] = pmu->recv.data[1];
80 }
81
82 mutex_unlock(&pmu->send.mutex);
83 return 0;
84 }
85
86 void
gt215_pmu_recv(struct nvkm_pmu * pmu)87 gt215_pmu_recv(struct nvkm_pmu *pmu)
88 {
89 struct nvkm_subdev *subdev = &pmu->subdev;
90 struct nvkm_device *device = subdev->device;
91 u32 process, message, data0, data1;
92
93 /* nothing to do if GET == PUT */
94 u32 addr = nvkm_rd32(device, 0x10a4cc);
95 if (addr == nvkm_rd32(device, 0x10a4c8))
96 return;
97
98 /* acquire data segment access */
99 do {
100 nvkm_wr32(device, 0x10a580, 0x00000002);
101 } while (nvkm_rd32(device, 0x10a580) != 0x00000002);
102
103 /* read the packet */
104 nvkm_wr32(device, 0x10a1c0, 0x02000000 | (((addr & 0x07) << 4) +
105 pmu->recv.base));
106 process = nvkm_rd32(device, 0x10a1c4);
107 message = nvkm_rd32(device, 0x10a1c4);
108 data0 = nvkm_rd32(device, 0x10a1c4);
109 data1 = nvkm_rd32(device, 0x10a1c4);
110 nvkm_wr32(device, 0x10a4cc, (addr + 1) & 0x0f);
111
112 /* release data segment access */
113 nvkm_wr32(device, 0x10a580, 0x00000000);
114
115 /* wake process if it's waiting on a synchronous reply */
116 if (pmu->recv.process) {
117 if (process == pmu->recv.process &&
118 message == pmu->recv.message) {
119 pmu->recv.data[0] = data0;
120 pmu->recv.data[1] = data1;
121 pmu->recv.process = 0;
122 wake_up(&pmu->recv.wait);
123 return;
124 }
125 }
126
127 /* right now there's no other expected responses from the engine,
128 * so assume that any unexpected message is an error.
129 */
130 nvkm_warn(subdev, "%c%c%c%c %08x %08x %08x %08x\n",
131 (char)((process & 0x000000ff) >> 0),
132 (char)((process & 0x0000ff00) >> 8),
133 (char)((process & 0x00ff0000) >> 16),
134 (char)((process & 0xff000000) >> 24),
135 process, message, data0, data1);
136 }
137
138 void
gt215_pmu_intr(struct nvkm_pmu * pmu)139 gt215_pmu_intr(struct nvkm_pmu *pmu)
140 {
141 struct nvkm_subdev *subdev = &pmu->subdev;
142 struct nvkm_device *device = subdev->device;
143 u32 disp = nvkm_rd32(device, 0x10a01c);
144 u32 intr = nvkm_rd32(device, 0x10a008) & disp & ~(disp >> 16);
145
146 if (intr & 0x00000020) {
147 u32 stat = nvkm_rd32(device, 0x10a16c);
148 if (stat & 0x80000000) {
149 nvkm_error(subdev, "UAS fault at %06x addr %08x\n",
150 stat & 0x00ffffff,
151 nvkm_rd32(device, 0x10a168));
152 nvkm_wr32(device, 0x10a16c, 0x00000000);
153 intr &= ~0x00000020;
154 }
155 }
156
157 if (intr & 0x00000040) {
158 schedule_work(&pmu->recv.work);
159 nvkm_wr32(device, 0x10a004, 0x00000040);
160 intr &= ~0x00000040;
161 }
162
163 if (intr & 0x00000080) {
164 nvkm_info(subdev, "wr32 %06x %08x\n",
165 nvkm_rd32(device, 0x10a7a0),
166 nvkm_rd32(device, 0x10a7a4));
167 nvkm_wr32(device, 0x10a004, 0x00000080);
168 intr &= ~0x00000080;
169 }
170
171 if (intr) {
172 nvkm_error(subdev, "intr %08x\n", intr);
173 nvkm_wr32(device, 0x10a004, intr);
174 }
175 }
176
177 void
gt215_pmu_fini(struct nvkm_pmu * pmu)178 gt215_pmu_fini(struct nvkm_pmu *pmu)
179 {
180 nvkm_wr32(pmu->subdev.device, 0x10a014, 0x00000060);
181 }
182
183 static void
gt215_pmu_reset(struct nvkm_pmu * pmu)184 gt215_pmu_reset(struct nvkm_pmu *pmu)
185 {
186 struct nvkm_device *device = pmu->subdev.device;
187 nvkm_mask(device, 0x022210, 0x00000001, 0x00000000);
188 nvkm_mask(device, 0x022210, 0x00000001, 0x00000001);
189 nvkm_rd32(device, 0x022210);
190 }
191
192 static bool
gt215_pmu_enabled(struct nvkm_pmu * pmu)193 gt215_pmu_enabled(struct nvkm_pmu *pmu)
194 {
195 return nvkm_rd32(pmu->subdev.device, 0x022210) & 0x00000001;
196 }
197
198 int
gt215_pmu_init(struct nvkm_pmu * pmu)199 gt215_pmu_init(struct nvkm_pmu *pmu)
200 {
201 struct nvkm_device *device = pmu->subdev.device;
202 int i;
203
204 /* upload data segment */
205 nvkm_wr32(device, 0x10a1c0, 0x01000000);
206 for (i = 0; i < pmu->func->data.size / 4; i++)
207 nvkm_wr32(device, 0x10a1c4, pmu->func->data.data[i]);
208
209 /* upload code segment */
210 nvkm_wr32(device, 0x10a180, 0x01000000);
211 for (i = 0; i < pmu->func->code.size / 4; i++) {
212 if ((i & 0x3f) == 0)
213 nvkm_wr32(device, 0x10a188, i >> 6);
214 nvkm_wr32(device, 0x10a184, pmu->func->code.data[i]);
215 }
216
217 /* start it running */
218 nvkm_wr32(device, 0x10a10c, 0x00000000);
219 nvkm_wr32(device, 0x10a104, 0x00000000);
220 nvkm_wr32(device, 0x10a100, 0x00000002);
221
222 /* wait for valid host->pmu ring configuration */
223 if (nvkm_msec(device, 2000,
224 if (nvkm_rd32(device, 0x10a4d0))
225 break;
226 ) < 0)
227 return -EBUSY;
228 pmu->send.base = nvkm_rd32(device, 0x10a4d0) & 0x0000ffff;
229 pmu->send.size = nvkm_rd32(device, 0x10a4d0) >> 16;
230
231 /* wait for valid pmu->host ring configuration */
232 if (nvkm_msec(device, 2000,
233 if (nvkm_rd32(device, 0x10a4dc))
234 break;
235 ) < 0)
236 return -EBUSY;
237 pmu->recv.base = nvkm_rd32(device, 0x10a4dc) & 0x0000ffff;
238 pmu->recv.size = nvkm_rd32(device, 0x10a4dc) >> 16;
239
240 nvkm_wr32(device, 0x10a010, 0x000000e0);
241 return 0;
242 }
243
244 const struct nvkm_falcon_func
245 gt215_pmu_flcn = {
246 .debug = 0xc08,
247 .fbif = 0xe00,
248 .load_imem = nvkm_falcon_v1_load_imem,
249 .load_dmem = nvkm_falcon_v1_load_dmem,
250 .read_dmem = nvkm_falcon_v1_read_dmem,
251 .bind_context = nvkm_falcon_v1_bind_context,
252 .wait_for_halt = nvkm_falcon_v1_wait_for_halt,
253 .clear_interrupt = nvkm_falcon_v1_clear_interrupt,
254 .set_start_addr = nvkm_falcon_v1_set_start_addr,
255 .start = nvkm_falcon_v1_start,
256 .enable = nvkm_falcon_v1_enable,
257 .disable = nvkm_falcon_v1_disable,
258 .cmdq = { 0x4a0, 0x4b0, 4 },
259 .msgq = { 0x4c8, 0x4cc, 0 },
260 };
261
262 static const struct nvkm_pmu_func
263 gt215_pmu = {
264 .flcn = >215_pmu_flcn,
265 .code.data = gt215_pmu_code,
266 .code.size = sizeof(gt215_pmu_code),
267 .data.data = gt215_pmu_data,
268 .data.size = sizeof(gt215_pmu_data),
269 .enabled = gt215_pmu_enabled,
270 .reset = gt215_pmu_reset,
271 .init = gt215_pmu_init,
272 .fini = gt215_pmu_fini,
273 .intr = gt215_pmu_intr,
274 .send = gt215_pmu_send,
275 .recv = gt215_pmu_recv,
276 };
277
278 static const struct nvkm_pmu_fwif
279 gt215_pmu_fwif[] = {
280 { -1, gf100_pmu_nofw, >215_pmu },
281 {}
282 };
283
284 int
gt215_pmu_new(struct nvkm_device * device,enum nvkm_subdev_type type,int inst,struct nvkm_pmu ** ppmu)285 gt215_pmu_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst,
286 struct nvkm_pmu **ppmu)
287 {
288 return nvkm_pmu_new_(gt215_pmu_fwif, device, type, inst, ppmu);
289 }
290