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