1 /* 2 * Copyright (c) 2015-2016, ARM Limited and Contributors. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions are met: 6 * 7 * Redistributions of source code must retain the above copyright notice, this 8 * list of conditions and the following disclaimer. 9 * 10 * Redistributions in binary form must reproduce the above copyright notice, 11 * this list of conditions and the following disclaimer in the documentation 12 * and/or other materials provided with the distribution. 13 * 14 * Neither the name of ARM nor the names of its contributors may be used 15 * to endorse or promote products derived from this software without specific 16 * prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE 22 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 23 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 24 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 25 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 26 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 27 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 28 * POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 #include <arch.h> 32 #include <arch_helpers.h> 33 #include <assert.h> 34 #include <bl_common.h> 35 #include <context.h> 36 #include <context_mgmt.h> 37 #include <debug.h> 38 #include <denver.h> 39 #include <mce.h> 40 #include <mmio.h> 41 #include <string.h> 42 #include <sys/errno.h> 43 #include <t18x_ari.h> 44 #include <tegra_def.h> 45 #include <tegra_platform.h> 46 47 /* NVG functions handlers */ 48 static arch_mce_ops_t nvg_mce_ops = { 49 .enter_cstate = nvg_enter_cstate, 50 .update_cstate_info = nvg_update_cstate_info, 51 .update_crossover_time = nvg_update_crossover_time, 52 .read_cstate_stats = nvg_read_cstate_stats, 53 .write_cstate_stats = nvg_write_cstate_stats, 54 .call_enum_misc = ari_enumeration_misc, 55 .is_ccx_allowed = nvg_is_ccx_allowed, 56 .is_sc7_allowed = nvg_is_sc7_allowed, 57 .online_core = nvg_online_core, 58 .cc3_ctrl = nvg_cc3_ctrl, 59 .update_reset_vector = ari_reset_vector_update, 60 .roc_flush_cache = ari_roc_flush_cache, 61 .roc_flush_cache_trbits = ari_roc_flush_cache_trbits, 62 .roc_clean_cache = ari_roc_clean_cache, 63 .read_write_mca = ari_read_write_mca, 64 .update_ccplex_gsc = ari_update_ccplex_gsc, 65 .enter_ccplex_state = ari_enter_ccplex_state, 66 .read_write_uncore_perfmon = ari_read_write_uncore_perfmon 67 }; 68 69 /* ARI functions handlers */ 70 static arch_mce_ops_t ari_mce_ops = { 71 .enter_cstate = ari_enter_cstate, 72 .update_cstate_info = ari_update_cstate_info, 73 .update_crossover_time = ari_update_crossover_time, 74 .read_cstate_stats = ari_read_cstate_stats, 75 .write_cstate_stats = ari_write_cstate_stats, 76 .call_enum_misc = ari_enumeration_misc, 77 .is_ccx_allowed = ari_is_ccx_allowed, 78 .is_sc7_allowed = ari_is_sc7_allowed, 79 .online_core = ari_online_core, 80 .cc3_ctrl = ari_cc3_ctrl, 81 .update_reset_vector = ari_reset_vector_update, 82 .roc_flush_cache = ari_roc_flush_cache, 83 .roc_flush_cache_trbits = ari_roc_flush_cache_trbits, 84 .roc_clean_cache = ari_roc_clean_cache, 85 .read_write_mca = ari_read_write_mca, 86 .update_ccplex_gsc = ari_update_ccplex_gsc, 87 .enter_ccplex_state = ari_enter_ccplex_state, 88 .read_write_uncore_perfmon = ari_read_write_uncore_perfmon 89 }; 90 91 typedef struct mce_config { 92 uint32_t ari_base; 93 arch_mce_ops_t *ops; 94 } mce_config_t; 95 96 /* Table to hold the per-CPU ARI base address and function handlers */ 97 static mce_config_t mce_cfg_table[MCE_ARI_APERTURES_MAX] = { 98 { 99 /* A57 Core 0 */ 100 .ari_base = TEGRA_MMCRAB_BASE + MCE_ARI_APERTURE_0_OFFSET, 101 .ops = &ari_mce_ops, 102 }, 103 { 104 /* A57 Core 1 */ 105 .ari_base = TEGRA_MMCRAB_BASE + MCE_ARI_APERTURE_1_OFFSET, 106 .ops = &ari_mce_ops, 107 }, 108 { 109 /* A57 Core 2 */ 110 .ari_base = TEGRA_MMCRAB_BASE + MCE_ARI_APERTURE_2_OFFSET, 111 .ops = &ari_mce_ops, 112 }, 113 { 114 /* A57 Core 3 */ 115 .ari_base = TEGRA_MMCRAB_BASE + MCE_ARI_APERTURE_3_OFFSET, 116 .ops = &ari_mce_ops, 117 }, 118 { 119 /* D15 Core 0 */ 120 .ari_base = TEGRA_MMCRAB_BASE + MCE_ARI_APERTURE_4_OFFSET, 121 .ops = &nvg_mce_ops, 122 }, 123 { 124 /* D15 Core 1 */ 125 .ari_base = TEGRA_MMCRAB_BASE + MCE_ARI_APERTURE_5_OFFSET, 126 .ops = &nvg_mce_ops, 127 } 128 }; 129 130 static uint32_t mce_get_curr_cpu_ari_base(void) 131 { 132 uint32_t mpidr = read_mpidr(); 133 int cpuid = mpidr & MPIDR_CPU_MASK; 134 int impl = (read_midr() >> MIDR_IMPL_SHIFT) & MIDR_IMPL_MASK; 135 136 /* 137 * T186 has 2 CPU clusters, one with Denver CPUs and the other with 138 * ARM CortexA-57 CPUs. Each cluster consists of 4 CPUs and the CPU 139 * numbers start from 0. In order to get the proper arch_mce_ops_t 140 * struct, we have to convert the Denver CPU ids to the corresponding 141 * indices in the mce_ops_table array. 142 */ 143 if (impl == DENVER_IMPL) 144 cpuid |= 0x4; 145 146 return mce_cfg_table[cpuid].ari_base; 147 } 148 149 static arch_mce_ops_t *mce_get_curr_cpu_ops(void) 150 { 151 uint32_t mpidr = read_mpidr(); 152 int cpuid = mpidr & MPIDR_CPU_MASK; 153 int impl = (read_midr() >> MIDR_IMPL_SHIFT) & MIDR_IMPL_MASK; 154 155 /* 156 * T186 has 2 CPU clusters, one with Denver CPUs and the other with 157 * ARM CortexA-57 CPUs. Each cluster consists of 4 CPUs and the CPU 158 * numbers start from 0. In order to get the proper arch_mce_ops_t 159 * struct, we have to convert the Denver CPU ids to the corresponding 160 * indices in the mce_ops_table array. 161 */ 162 if (impl == DENVER_IMPL) 163 cpuid |= 0x4; 164 165 return mce_cfg_table[cpuid].ops; 166 } 167 168 /******************************************************************************* 169 * Common handler for all MCE commands 170 ******************************************************************************/ 171 int mce_command_handler(mce_cmd_t cmd, uint64_t arg0, uint64_t arg1, 172 uint64_t arg2) 173 { 174 arch_mce_ops_t *ops; 175 uint32_t cpu_ari_base; 176 uint64_t ret64 = 0, arg3, arg4, arg5; 177 int ret = 0; 178 mca_cmd_t mca_cmd; 179 uncore_perfmon_req_t req; 180 cpu_context_t *ctx = cm_get_context(NON_SECURE); 181 gp_regs_t *gp_regs = get_gpregs_ctx(ctx); 182 183 assert(ctx); 184 assert(gp_regs); 185 186 /* get a pointer to the CPU's arch_mce_ops_t struct */ 187 ops = mce_get_curr_cpu_ops(); 188 189 /* get the CPU's ARI base address */ 190 cpu_ari_base = mce_get_curr_cpu_ari_base(); 191 192 switch (cmd) { 193 case MCE_CMD_ENTER_CSTATE: 194 ret = ops->enter_cstate(cpu_ari_base, arg0, arg1); 195 if (ret < 0) 196 ERROR("%s: enter_cstate failed(%d)\n", __func__, ret); 197 198 break; 199 200 case MCE_CMD_UPDATE_CSTATE_INFO: 201 /* 202 * get the parameters required for the update cstate info 203 * command 204 */ 205 arg3 = read_ctx_reg(gp_regs, CTX_GPREG_X4); 206 arg4 = read_ctx_reg(gp_regs, CTX_GPREG_X5); 207 arg5 = read_ctx_reg(gp_regs, CTX_GPREG_X6); 208 209 ret = ops->update_cstate_info(cpu_ari_base, (uint32_t)arg0, 210 (uint32_t)arg1, (uint32_t)arg2, (uint8_t)arg3, 211 (uint32_t)arg4, (uint8_t)arg5); 212 if (ret < 0) 213 ERROR("%s: update_cstate_info failed(%d)\n", 214 __func__, ret); 215 216 write_ctx_reg(gp_regs, CTX_GPREG_X4, 0); 217 write_ctx_reg(gp_regs, CTX_GPREG_X5, 0); 218 write_ctx_reg(gp_regs, CTX_GPREG_X6, 0); 219 220 break; 221 222 case MCE_CMD_UPDATE_CROSSOVER_TIME: 223 ret = ops->update_crossover_time(cpu_ari_base, arg0, arg1); 224 if (ret < 0) 225 ERROR("%s: update_crossover_time failed(%d)\n", 226 __func__, ret); 227 228 break; 229 230 case MCE_CMD_READ_CSTATE_STATS: 231 ret64 = ops->read_cstate_stats(cpu_ari_base, arg0); 232 233 /* update context to return cstate stats value */ 234 write_ctx_reg(gp_regs, CTX_GPREG_X1, ret64); 235 write_ctx_reg(gp_regs, CTX_GPREG_X2, ret64); 236 237 break; 238 239 case MCE_CMD_WRITE_CSTATE_STATS: 240 ret = ops->write_cstate_stats(cpu_ari_base, arg0, arg1); 241 if (ret < 0) 242 ERROR("%s: write_cstate_stats failed(%d)\n", 243 __func__, ret); 244 245 break; 246 247 case MCE_CMD_IS_CCX_ALLOWED: 248 ret = ops->is_ccx_allowed(cpu_ari_base, arg0, arg1); 249 if (ret < 0) { 250 ERROR("%s: is_ccx_allowed failed(%d)\n", __func__, ret); 251 break; 252 } 253 254 /* update context to return CCx status value */ 255 write_ctx_reg(gp_regs, CTX_GPREG_X1, ret); 256 257 break; 258 259 case MCE_CMD_IS_SC7_ALLOWED: 260 ret = ops->is_sc7_allowed(cpu_ari_base, arg0, arg1); 261 if (ret < 0) { 262 ERROR("%s: is_sc7_allowed failed(%d)\n", __func__, ret); 263 break; 264 } 265 266 /* update context to return SC7 status value */ 267 write_ctx_reg(gp_regs, CTX_GPREG_X1, ret); 268 write_ctx_reg(gp_regs, CTX_GPREG_X3, ret); 269 270 break; 271 272 case MCE_CMD_ONLINE_CORE: 273 ret = ops->online_core(cpu_ari_base, arg0); 274 if (ret < 0) 275 ERROR("%s: online_core failed(%d)\n", __func__, ret); 276 277 break; 278 279 case MCE_CMD_CC3_CTRL: 280 ret = ops->cc3_ctrl(cpu_ari_base, arg0, arg1, arg2); 281 if (ret < 0) 282 ERROR("%s: cc3_ctrl failed(%d)\n", __func__, ret); 283 284 break; 285 286 case MCE_CMD_ECHO_DATA: 287 ret64 = ops->call_enum_misc(cpu_ari_base, TEGRA_ARI_MISC_ECHO, 288 arg0); 289 290 /* update context to return if echo'd data matched source */ 291 write_ctx_reg(gp_regs, CTX_GPREG_X1, ret64 == arg0); 292 write_ctx_reg(gp_regs, CTX_GPREG_X2, ret64 == arg0); 293 294 break; 295 296 case MCE_CMD_READ_VERSIONS: 297 ret64 = ops->call_enum_misc(cpu_ari_base, TEGRA_ARI_MISC_VERSION, 298 arg0); 299 300 /* 301 * version = minor(63:32) | major(31:0). Update context 302 * to return major and minor version number. 303 */ 304 write_ctx_reg(gp_regs, CTX_GPREG_X1, (uint32_t)ret64); 305 write_ctx_reg(gp_regs, CTX_GPREG_X2, (uint32_t)(ret64 >> 32)); 306 307 break; 308 309 case MCE_CMD_ENUM_FEATURES: 310 ret = ops->call_enum_misc(cpu_ari_base, 311 TEGRA_ARI_MISC_FEATURE_LEAF_0, arg0); 312 313 /* update context to return features value */ 314 write_ctx_reg(gp_regs, CTX_GPREG_X1, ret64); 315 316 ret = 0; 317 318 break; 319 320 case MCE_CMD_ROC_FLUSH_CACHE_TRBITS: 321 ret = ops->roc_flush_cache_trbits(cpu_ari_base); 322 if (ret < 0) 323 ERROR("%s: flush cache_trbits failed(%d)\n", __func__, 324 ret); 325 326 break; 327 328 case MCE_CMD_ROC_FLUSH_CACHE: 329 ret = ops->roc_flush_cache(cpu_ari_base); 330 if (ret < 0) 331 ERROR("%s: flush cache failed(%d)\n", __func__, ret); 332 333 break; 334 335 case MCE_CMD_ROC_CLEAN_CACHE: 336 ret = ops->roc_clean_cache(cpu_ari_base); 337 if (ret < 0) 338 ERROR("%s: clean cache failed(%d)\n", __func__, ret); 339 340 break; 341 342 case MCE_CMD_ENUM_READ_MCA: 343 memcpy(&mca_cmd, &arg0, sizeof(arg0)); 344 ret64 = ops->read_write_mca(cpu_ari_base, mca_cmd, &arg1); 345 346 /* update context to return MCA data/error */ 347 write_ctx_reg(gp_regs, CTX_GPREG_X1, ret64); 348 write_ctx_reg(gp_regs, CTX_GPREG_X2, arg1); 349 write_ctx_reg(gp_regs, CTX_GPREG_X3, ret64); 350 351 break; 352 353 case MCE_CMD_ENUM_WRITE_MCA: 354 memcpy(&mca_cmd, &arg0, sizeof(arg0)); 355 ret64 = ops->read_write_mca(cpu_ari_base, mca_cmd, &arg1); 356 357 /* update context to return MCA error */ 358 write_ctx_reg(gp_regs, CTX_GPREG_X1, ret64); 359 write_ctx_reg(gp_regs, CTX_GPREG_X3, ret64); 360 361 break; 362 363 #if ENABLE_CHIP_VERIFICATION_HARNESS 364 case MCE_CMD_ENABLE_LATIC: 365 /* 366 * This call is not for production use. The constant value, 367 * 0xFFFF0000, is specific to allowing for enabling LATIC on 368 * pre-production parts for the chip verification harness. 369 * 370 * Enabling LATIC allows S/W to read the MINI ISPs in the 371 * CCPLEX. The ISMs are used for various measurements relevant 372 * to particular locations in the Silicon. They are small 373 * counters which can be polled to determine how fast a 374 * particular location in the Silicon is. 375 */ 376 ops->enter_ccplex_state(mce_get_curr_cpu_ari_base(), 377 0xFFFF0000); 378 379 break; 380 #endif 381 382 case MCE_CMD_UNCORE_PERFMON_REQ: 383 memcpy(&req, &arg0, sizeof(arg0)); 384 ret = ops->read_write_uncore_perfmon(cpu_ari_base, req, &arg1); 385 386 /* update context to return data */ 387 write_ctx_reg(gp_regs, CTX_GPREG_X1, arg1); 388 break; 389 390 default: 391 ERROR("unknown MCE command (%d)\n", cmd); 392 return EINVAL; 393 } 394 395 return ret; 396 } 397 398 /******************************************************************************* 399 * Handler to update the reset vector for CPUs 400 ******************************************************************************/ 401 int mce_update_reset_vector(uint32_t addr_lo, uint32_t addr_hi) 402 { 403 arch_mce_ops_t *ops = mce_get_curr_cpu_ops(); 404 405 ops->update_reset_vector(mce_get_curr_cpu_ari_base(), addr_lo, addr_hi); 406 407 return 0; 408 } 409 410 static int mce_update_ccplex_gsc(tegra_ari_gsc_index_t gsc_idx) 411 { 412 arch_mce_ops_t *ops = mce_get_curr_cpu_ops(); 413 414 ops->update_ccplex_gsc(mce_get_curr_cpu_ari_base(), gsc_idx); 415 416 return 0; 417 } 418 419 /******************************************************************************* 420 * Handler to update carveout values for Video Memory Carveout region 421 ******************************************************************************/ 422 int mce_update_gsc_videomem(void) 423 { 424 return mce_update_ccplex_gsc(TEGRA_ARI_GSC_VPR_IDX); 425 } 426 427 /******************************************************************************* 428 * Handler to update carveout values for TZDRAM aperture 429 ******************************************************************************/ 430 int mce_update_gsc_tzdram(void) 431 { 432 return mce_update_ccplex_gsc(TEGRA_ARI_GSC_TZ_DRAM_IDX); 433 } 434 435 /******************************************************************************* 436 * Handler to update carveout values for TZ SysRAM aperture 437 ******************************************************************************/ 438 int mce_update_gsc_tzram(void) 439 { 440 return mce_update_ccplex_gsc(TEGRA_ARI_GSC_TZRAM); 441 } 442 443 /******************************************************************************* 444 * Handler to shutdown/reset the entire system 445 ******************************************************************************/ 446 __dead2 void mce_enter_ccplex_state(uint32_t state_idx) 447 { 448 arch_mce_ops_t *ops = mce_get_curr_cpu_ops(); 449 450 /* sanity check state value */ 451 if (state_idx != TEGRA_ARI_MISC_CCPLEX_SHUTDOWN_POWER_OFF && 452 state_idx != TEGRA_ARI_MISC_CCPLEX_SHUTDOWN_REBOOT) 453 panic(); 454 455 ops->enter_ccplex_state(mce_get_curr_cpu_ari_base(), state_idx); 456 457 /* wait till the CCPLEX powers down */ 458 for (;;) 459 ; 460 461 panic(); 462 } 463 464 /******************************************************************************* 465 * Handler to issue the UPDATE_CSTATE_INFO request 466 ******************************************************************************/ 467 void mce_update_cstate_info(mce_cstate_info_t *cstate) 468 { 469 arch_mce_ops_t *ops = mce_get_curr_cpu_ops(); 470 471 /* issue the UPDATE_CSTATE_INFO request */ 472 ops->update_cstate_info(mce_get_curr_cpu_ari_base(), cstate->cluster, 473 cstate->ccplex, cstate->system, cstate->system_state_force, 474 cstate->wake_mask, cstate->update_wake_mask); 475 } 476 477 /******************************************************************************* 478 * Handler to read the MCE firmware version and check if it is compatible 479 * with interface header the BL3-1 was compiled against 480 ******************************************************************************/ 481 void mce_verify_firmware_version(void) 482 { 483 arch_mce_ops_t *ops; 484 uint32_t cpu_ari_base; 485 uint64_t version; 486 uint32_t major, minor; 487 488 /* 489 * MCE firmware is not running on simulation platforms. 490 */ 491 if (tegra_platform_is_emulation()) 492 return; 493 494 /* get a pointer to the CPU's arch_mce_ops_t struct */ 495 ops = mce_get_curr_cpu_ops(); 496 497 /* get the CPU's ARI base address */ 498 cpu_ari_base = mce_get_curr_cpu_ari_base(); 499 500 /* 501 * Read the MCE firmware version and extract the major and minor 502 * version fields 503 */ 504 version = ops->call_enum_misc(cpu_ari_base, TEGRA_ARI_MISC_VERSION, 0); 505 major = (uint32_t)version; 506 minor = (uint32_t)(version >> 32); 507 508 INFO("MCE Version - HW=%d:%d, SW=%d:%d\n", major, minor, 509 TEGRA_ARI_VERSION_MAJOR, TEGRA_ARI_VERSION_MINOR); 510 511 /* 512 * Verify that the MCE firmware version and the interface header 513 * match 514 */ 515 if (major != TEGRA_ARI_VERSION_MAJOR) { 516 ERROR("ARI major version mismatch\n"); 517 panic(); 518 } 519 520 if (minor < TEGRA_ARI_VERSION_MINOR) { 521 ERROR("ARI minor version mismatch\n"); 522 panic(); 523 } 524 } 525