gm200.c

  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
 32static void
 33pmu_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
 52static void
 53pmu_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
 64static u32
 65pmu_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
 73static void
 74pmu_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
 82static int
 83pmu_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
114void
115gm200_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
123int
124gm200_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
178static const struct nvkm_devinit_func
179gm200_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
187int
188gm200_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}