| 1 | /* |
| 2 | * Copyright (c) 2012, NVIDIA CORPORATION. All rights reserved. |
| 3 | * |
| 4 | * This program is free software; you can redistribute it and/or modify it |
| 5 | * under the terms and conditions of the GNU General Public License, |
| 6 | * version 2, as published by the Free Software Foundation. |
| 7 | * |
| 8 | * This program is distributed in the hope it will be useful, but WITHOUT |
| 9 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 10 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
| 11 | * more details. |
| 12 | * |
| 13 | * You should have received a copy of the GNU General Public License |
| 14 | * along with this program. If not, see <http://www.gnu.org/licenses/>. |
| 15 | */ |
| 16 | |
| 17 | #include <linux/kernel.h> |
| 18 | #include <linux/bug.h> |
| 19 | |
| 20 | #include "fuse.h" |
| 21 | |
| 22 | #define CORE_PROCESS_CORNERS_NUM 1 |
| 23 | #define CPU_PROCESS_CORNERS_NUM 6 |
| 24 | |
| 25 | #define FUSE_SPEEDO_CALIB_0 0x114 |
| 26 | #define FUSE_PACKAGE_INFO 0X1FC |
| 27 | #define FUSE_TEST_PROG_VER 0X128 |
| 28 | |
| 29 | #define G_SPEEDO_BIT_MINUS1 58 |
| 30 | #define G_SPEEDO_BIT_MINUS1_R 59 |
| 31 | #define G_SPEEDO_BIT_MINUS2 60 |
| 32 | #define G_SPEEDO_BIT_MINUS2_R 61 |
| 33 | #define LP_SPEEDO_BIT_MINUS1 62 |
| 34 | #define LP_SPEEDO_BIT_MINUS1_R 63 |
| 35 | #define LP_SPEEDO_BIT_MINUS2 64 |
| 36 | #define LP_SPEEDO_BIT_MINUS2_R 65 |
| 37 | |
| 38 | enum { |
| 39 | THRESHOLD_INDEX_0, |
| 40 | THRESHOLD_INDEX_1, |
| 41 | THRESHOLD_INDEX_2, |
| 42 | THRESHOLD_INDEX_3, |
| 43 | THRESHOLD_INDEX_4, |
| 44 | THRESHOLD_INDEX_5, |
| 45 | THRESHOLD_INDEX_6, |
| 46 | THRESHOLD_INDEX_7, |
| 47 | THRESHOLD_INDEX_8, |
| 48 | THRESHOLD_INDEX_9, |
| 49 | THRESHOLD_INDEX_10, |
| 50 | THRESHOLD_INDEX_11, |
| 51 | THRESHOLD_INDEX_COUNT, |
| 52 | }; |
| 53 | |
| 54 | static const u32 core_process_speedos[][CORE_PROCESS_CORNERS_NUM] = { |
| 55 | {180}, |
| 56 | {170}, |
| 57 | {195}, |
| 58 | {180}, |
| 59 | {168}, |
| 60 | {192}, |
| 61 | {180}, |
| 62 | {170}, |
| 63 | {195}, |
| 64 | {180}, |
| 65 | {180}, |
| 66 | {180}, |
| 67 | }; |
| 68 | |
| 69 | static const u32 cpu_process_speedos[][CPU_PROCESS_CORNERS_NUM] = { |
| 70 | {306, 338, 360, 376, UINT_MAX}, |
| 71 | {295, 336, 358, 375, UINT_MAX}, |
| 72 | {325, 325, 358, 375, UINT_MAX}, |
| 73 | {325, 325, 358, 375, UINT_MAX}, |
| 74 | {292, 324, 348, 364, UINT_MAX}, |
| 75 | {324, 324, 348, 364, UINT_MAX}, |
| 76 | {324, 324, 348, 364, UINT_MAX}, |
| 77 | {295, 336, 358, 375, UINT_MAX}, |
| 78 | {358, 358, 358, 358, 397, UINT_MAX}, |
| 79 | {364, 364, 364, 364, 397, UINT_MAX}, |
| 80 | {295, 336, 358, 375, 391, UINT_MAX}, |
| 81 | {295, 336, 358, 375, 391, UINT_MAX}, |
| 82 | }; |
| 83 | |
| 84 | static int threshold_index; |
| 85 | static int package_id; |
| 86 | |
| 87 | static void fuse_speedo_calib(u32 *speedo_g, u32 *speedo_lp) |
| 88 | { |
| 89 | u32 reg; |
| 90 | int ate_ver; |
| 91 | int bit_minus1; |
| 92 | int bit_minus2; |
| 93 | |
| 94 | reg = tegra_fuse_readl(FUSE_SPEEDO_CALIB_0); |
| 95 | |
| 96 | *speedo_lp = (reg & 0xFFFF) * 4; |
| 97 | *speedo_g = ((reg >> 16) & 0xFFFF) * 4; |
| 98 | |
| 99 | ate_ver = tegra_fuse_readl(FUSE_TEST_PROG_VER); |
| 100 | pr_info("%s: ATE prog ver %d.%d\n", __func__, ate_ver/10, ate_ver%10); |
| 101 | |
| 102 | if (ate_ver >= 26) { |
| 103 | bit_minus1 = tegra_spare_fuse(LP_SPEEDO_BIT_MINUS1); |
| 104 | bit_minus1 |= tegra_spare_fuse(LP_SPEEDO_BIT_MINUS1_R); |
| 105 | bit_minus2 = tegra_spare_fuse(LP_SPEEDO_BIT_MINUS2); |
| 106 | bit_minus2 |= tegra_spare_fuse(LP_SPEEDO_BIT_MINUS2_R); |
| 107 | *speedo_lp |= (bit_minus1 << 1) | bit_minus2; |
| 108 | |
| 109 | bit_minus1 = tegra_spare_fuse(G_SPEEDO_BIT_MINUS1); |
| 110 | bit_minus1 |= tegra_spare_fuse(G_SPEEDO_BIT_MINUS1_R); |
| 111 | bit_minus2 = tegra_spare_fuse(G_SPEEDO_BIT_MINUS2); |
| 112 | bit_minus2 |= tegra_spare_fuse(G_SPEEDO_BIT_MINUS2_R); |
| 113 | *speedo_g |= (bit_minus1 << 1) | bit_minus2; |
| 114 | } else { |
| 115 | *speedo_lp |= 0x3; |
| 116 | *speedo_g |= 0x3; |
| 117 | } |
| 118 | } |
| 119 | |
| 120 | static void rev_sku_to_speedo_ids(int rev, int sku) |
| 121 | { |
| 122 | switch (rev) { |
| 123 | case TEGRA_REVISION_A01: |
| 124 | tegra_cpu_speedo_id = 0; |
| 125 | tegra_soc_speedo_id = 0; |
| 126 | threshold_index = THRESHOLD_INDEX_0; |
| 127 | break; |
| 128 | case TEGRA_REVISION_A02: |
| 129 | case TEGRA_REVISION_A03: |
| 130 | switch (sku) { |
| 131 | case 0x87: |
| 132 | case 0x82: |
| 133 | tegra_cpu_speedo_id = 1; |
| 134 | tegra_soc_speedo_id = 1; |
| 135 | threshold_index = THRESHOLD_INDEX_1; |
| 136 | break; |
| 137 | case 0x81: |
| 138 | switch (package_id) { |
| 139 | case 1: |
| 140 | tegra_cpu_speedo_id = 2; |
| 141 | tegra_soc_speedo_id = 2; |
| 142 | threshold_index = THRESHOLD_INDEX_2; |
| 143 | break; |
| 144 | case 2: |
| 145 | tegra_cpu_speedo_id = 4; |
| 146 | tegra_soc_speedo_id = 1; |
| 147 | threshold_index = THRESHOLD_INDEX_7; |
| 148 | break; |
| 149 | default: |
| 150 | pr_err("Tegra30: Unknown pkg %d\n", package_id); |
| 151 | BUG(); |
| 152 | break; |
| 153 | } |
| 154 | break; |
| 155 | case 0x80: |
| 156 | switch (package_id) { |
| 157 | case 1: |
| 158 | tegra_cpu_speedo_id = 5; |
| 159 | tegra_soc_speedo_id = 2; |
| 160 | threshold_index = THRESHOLD_INDEX_8; |
| 161 | break; |
| 162 | case 2: |
| 163 | tegra_cpu_speedo_id = 6; |
| 164 | tegra_soc_speedo_id = 2; |
| 165 | threshold_index = THRESHOLD_INDEX_9; |
| 166 | break; |
| 167 | default: |
| 168 | pr_err("Tegra30: Unknown pkg %d\n", package_id); |
| 169 | BUG(); |
| 170 | break; |
| 171 | } |
| 172 | break; |
| 173 | case 0x83: |
| 174 | switch (package_id) { |
| 175 | case 1: |
| 176 | tegra_cpu_speedo_id = 7; |
| 177 | tegra_soc_speedo_id = 1; |
| 178 | threshold_index = THRESHOLD_INDEX_10; |
| 179 | break; |
| 180 | case 2: |
| 181 | tegra_cpu_speedo_id = 3; |
| 182 | tegra_soc_speedo_id = 2; |
| 183 | threshold_index = THRESHOLD_INDEX_3; |
| 184 | break; |
| 185 | default: |
| 186 | pr_err("Tegra30: Unknown pkg %d\n", package_id); |
| 187 | BUG(); |
| 188 | break; |
| 189 | } |
| 190 | break; |
| 191 | case 0x8F: |
| 192 | tegra_cpu_speedo_id = 8; |
| 193 | tegra_soc_speedo_id = 1; |
| 194 | threshold_index = THRESHOLD_INDEX_11; |
| 195 | break; |
| 196 | case 0x08: |
| 197 | tegra_cpu_speedo_id = 1; |
| 198 | tegra_soc_speedo_id = 1; |
| 199 | threshold_index = THRESHOLD_INDEX_4; |
| 200 | break; |
| 201 | case 0x02: |
| 202 | tegra_cpu_speedo_id = 2; |
| 203 | tegra_soc_speedo_id = 2; |
| 204 | threshold_index = THRESHOLD_INDEX_5; |
| 205 | break; |
| 206 | case 0x04: |
| 207 | tegra_cpu_speedo_id = 3; |
| 208 | tegra_soc_speedo_id = 2; |
| 209 | threshold_index = THRESHOLD_INDEX_6; |
| 210 | break; |
| 211 | case 0: |
| 212 | switch (package_id) { |
| 213 | case 1: |
| 214 | tegra_cpu_speedo_id = 2; |
| 215 | tegra_soc_speedo_id = 2; |
| 216 | threshold_index = THRESHOLD_INDEX_2; |
| 217 | break; |
| 218 | case 2: |
| 219 | tegra_cpu_speedo_id = 3; |
| 220 | tegra_soc_speedo_id = 2; |
| 221 | threshold_index = THRESHOLD_INDEX_3; |
| 222 | break; |
| 223 | default: |
| 224 | pr_err("Tegra30: Unknown pkg %d\n", package_id); |
| 225 | BUG(); |
| 226 | break; |
| 227 | } |
| 228 | break; |
| 229 | default: |
| 230 | pr_warn("Tegra30: Unknown SKU %d\n", sku); |
| 231 | tegra_cpu_speedo_id = 0; |
| 232 | tegra_soc_speedo_id = 0; |
| 233 | threshold_index = THRESHOLD_INDEX_0; |
| 234 | break; |
| 235 | } |
| 236 | break; |
| 237 | default: |
| 238 | pr_warn("Tegra30: Unknown chip rev %d\n", rev); |
| 239 | tegra_cpu_speedo_id = 0; |
| 240 | tegra_soc_speedo_id = 0; |
| 241 | threshold_index = THRESHOLD_INDEX_0; |
| 242 | break; |
| 243 | } |
| 244 | } |
| 245 | |
| 246 | void tegra30_init_speedo_data(void) |
| 247 | { |
| 248 | u32 cpu_speedo_val; |
| 249 | u32 core_speedo_val; |
| 250 | int i; |
| 251 | |
| 252 | BUILD_BUG_ON(ARRAY_SIZE(cpu_process_speedos) != |
| 253 | THRESHOLD_INDEX_COUNT); |
| 254 | BUILD_BUG_ON(ARRAY_SIZE(core_process_speedos) != |
| 255 | THRESHOLD_INDEX_COUNT); |
| 256 | |
| 257 | package_id = tegra_fuse_readl(FUSE_PACKAGE_INFO) & 0x0F; |
| 258 | |
| 259 | rev_sku_to_speedo_ids(tegra_revision, tegra_sku_id); |
| 260 | fuse_speedo_calib(&cpu_speedo_val, &core_speedo_val); |
| 261 | pr_debug("%s CPU speedo value %u\n", __func__, cpu_speedo_val); |
| 262 | pr_debug("%s Core speedo value %u\n", __func__, core_speedo_val); |
| 263 | |
| 264 | for (i = 0; i < CPU_PROCESS_CORNERS_NUM; i++) { |
| 265 | if (cpu_speedo_val < cpu_process_speedos[threshold_index][i]) |
| 266 | break; |
| 267 | } |
| 268 | tegra_cpu_process_id = i - 1; |
| 269 | |
| 270 | if (tegra_cpu_process_id == -1) { |
| 271 | pr_warn("Tegra30: CPU speedo value %3d out of range", |
| 272 | cpu_speedo_val); |
| 273 | tegra_cpu_process_id = 0; |
| 274 | tegra_cpu_speedo_id = 1; |
| 275 | } |
| 276 | |
| 277 | for (i = 0; i < CORE_PROCESS_CORNERS_NUM; i++) { |
| 278 | if (core_speedo_val < core_process_speedos[threshold_index][i]) |
| 279 | break; |
| 280 | } |
| 281 | tegra_core_process_id = i - 1; |
| 282 | |
| 283 | if (tegra_core_process_id == -1) { |
| 284 | pr_warn("Tegra30: CORE speedo value %3d out of range", |
| 285 | core_speedo_val); |
| 286 | tegra_core_process_id = 0; |
| 287 | tegra_soc_speedo_id = 1; |
| 288 | } |
| 289 | |
| 290 | pr_info("Tegra30: CPU Speedo ID %d, Soc Speedo ID %d", |
| 291 | tegra_cpu_speedo_id, tegra_soc_speedo_id); |
| 292 | } |