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 "nv50.h"
25
26 #include <subdev/bios.h>
27 #include <subdev/bios/bit.h>
28 #include <subdev/bios/pmu.h>
29 #include <subdev/pmu.h>
30 #include <subdev/timer.h>
31
32 static void
pmu_code(struct nv50_devinit * init,u32 pmu,u32 img,u32 len,bool sec)33 pmu_code(struct nv50_devinit *init, u32 pmu, u32 img, u32 len, bool sec)
34 {
35 struct nvkm_device *device = init->base.subdev.device;
36 struct nvkm_bios *bios = device->bios;
37 int i;
38
39 nvkm_wr32(device, 0x10a180, 0x01000000 | (sec ? 0x10000000 : 0) | pmu);
40 for (i = 0; i < len; i += 4) {
41 if ((i & 0xff) == 0)
42 nvkm_wr32(device, 0x10a188, (pmu + i) >> 8);
43 nvkm_wr32(device, 0x10a184, nvbios_rd32(bios, img + i));
44 }
45
46 while (i & 0xff) {
47 nvkm_wr32(device, 0x10a184, 0x00000000);
48 i += 4;
49 }
50 }
51
52 static void
pmu_data(struct nv50_devinit * init,u32 pmu,u32 img,u32 len)53 pmu_data(struct nv50_devinit *init, u32 pmu, u32 img, u32 len)
54 {
55 struct nvkm_device *device = init->base.subdev.device;
56 struct nvkm_bios *bios = device->bios;
57 int i;
58
59 nvkm_wr32(device, 0x10a1c0, 0x01000000 | pmu);
60 for (i = 0; i < len; i += 4)
61 nvkm_wr32(device, 0x10a1c4, nvbios_rd32(bios, img + i));
62 }
63
64 static u32
pmu_args(struct nv50_devinit * init,u32 argp,u32 argi)65 pmu_args(struct nv50_devinit *init, u32 argp, u32 argi)
66 {
67 struct nvkm_device *device = init->base.subdev.device;
68 nvkm_wr32(device, 0x10a1c0, argp);
69 nvkm_wr32(device, 0x10a1c0, nvkm_rd32(device, 0x10a1c4) + argi);
70 return nvkm_rd32(device, 0x10a1c4);
71 }
72
73 static void
pmu_exec(struct nv50_devinit * init,u32 init_addr)74 pmu_exec(struct nv50_devinit *init, u32 init_addr)
75 {
76 struct nvkm_device *device = init->base.subdev.device;
77 nvkm_wr32(device, 0x10a104, init_addr);
78 nvkm_wr32(device, 0x10a10c, 0x00000000);
79 nvkm_wr32(device, 0x10a100, 0x00000002);
80 }
81
82 static int
pmu_load(struct nv50_devinit * init,u8 type,bool post,u32 * init_addr_pmu,u32 * args_addr_pmu)83 pmu_load(struct nv50_devinit *init, u8 type, bool post,
84 u32 *init_addr_pmu, u32 *args_addr_pmu)
85 {
86 struct nvkm_subdev *subdev = &init->base.subdev;
87 struct nvkm_bios *bios = subdev->device->bios;
88 struct nvbios_pmuR pmu;
89 int ret;
90
91 if (!nvbios_pmuRm(bios, type, &pmu))
92 return -EINVAL;
93
94 if (!post || !subdev->device->pmu)
95 return 0;
96
97 ret = nvkm_falcon_reset(&subdev->device->pmu->falcon);
98 if (ret)
99 return ret;
100
101 pmu_code(init, pmu.boot_addr_pmu, pmu.boot_addr, pmu.boot_size, false);
102 pmu_code(init, pmu.code_addr_pmu, pmu.code_addr, pmu.code_size, true);
103 pmu_data(init, pmu.data_addr_pmu, pmu.data_addr, pmu.data_size);
104
105 if (init_addr_pmu) {
106 *init_addr_pmu = pmu.init_addr_pmu;
107 *args_addr_pmu = pmu.args_addr_pmu;
108 return 0;
109 }
110
111 return pmu_exec(init, pmu.init_addr_pmu), 0;
112 }
113
114 void
gm200_devinit_preos(struct nv50_devinit * init,bool post)115 gm200_devinit_preos(struct nv50_devinit *init, bool post)
116 {
117 /* Optional: Execute PRE_OS application on PMU, which should at
118 * least take care of fans until a full PMU has been loaded.
119 */
120 pmu_load(init, 0x01, post, NULL, NULL);
121 }
122
123 int
gm200_devinit_post(struct nvkm_devinit * base,bool post)124 gm200_devinit_post(struct nvkm_devinit *base, bool post)
125 {
126 struct nv50_devinit *init = nv50_devinit(base);
127 struct nvkm_subdev *subdev = &init->base.subdev;
128 struct nvkm_device *device = subdev->device;
129 struct nvkm_bios *bios = device->bios;
130 struct bit_entry bit_I;
131 u32 exec, args;
132 int ret;
133
134 if (bit_entry(bios, 'I', &bit_I) || bit_I.version != 1 ||
135 bit_I.length < 0x1c) {
136 nvkm_error(subdev, "VBIOS PMU init data not found\n");
137 return -EINVAL;
138 }
139
140 /* Upload DEVINIT application from VBIOS onto PMU. */
141 ret = pmu_load(init, 0x04, post, &exec, &args);
142 if (ret) {
143 nvkm_error(subdev, "VBIOS PMU/DEVINIT not found\n");
144 return ret;
145 }
146
147 /* Upload tables required by opcodes in boot scripts. */
148 if (post) {
149 u32 pmu = pmu_args(init, args + 0x08, 0x08);
150 u32 img = nvbios_rd16(bios, bit_I.offset + 0x14);
151 u32 len = nvbios_rd16(bios, bit_I.offset + 0x16);
152 pmu_data(init, pmu, img, len);
153 }
154
155 /* Upload boot scripts. */
156 if (post) {
157 u32 pmu = pmu_args(init, args + 0x08, 0x10);
158 u32 img = nvbios_rd16(bios, bit_I.offset + 0x18);
159 u32 len = nvbios_rd16(bios, bit_I.offset + 0x1a);
160 pmu_data(init, pmu, img, len);
161 }
162
163 /* Execute DEVINIT. */
164 if (post) {
165 nvkm_wr32(device, 0x10a040, 0x00005000);
166 pmu_exec(init, exec);
167 if (nvkm_msec(device, 2000,
168 if (nvkm_rd32(device, 0x10a040) & 0x00002000)
169 break;
170 ) < 0)
171 return -ETIMEDOUT;
172 }
173
174 gm200_devinit_preos(init, post);
175 return 0;
176 }
177
178 static const struct nvkm_devinit_func
179 gm200_devinit = {
180 .preinit = gf100_devinit_preinit,
181 .init = nv50_devinit_init,
182 .post = gm200_devinit_post,
183 .pll_set = gf100_devinit_pll_set,
184 .disable = gm107_devinit_disable,
185 };
186
187 int
gm200_devinit_new(struct nvkm_device * device,enum nvkm_subdev_type type,int inst,struct nvkm_devinit ** pinit)188 gm200_devinit_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst,
189 struct nvkm_devinit **pinit)
190 {
191 return nv50_devinit_new_(&gm200_devinit, device, type, inst, pinit);
192 }
193