Varun Wadekar | a0352ab | 2017-03-14 14:24:35 -0700 | [diff] [blame] | 1 | /* |
Steven Kao | d346dca | 2016-12-23 16:17:18 +0800 | [diff] [blame] | 2 | * Copyright (c) 2015-2017, ARM Limited and Contributors. All rights reserved. |
Varun Wadekar | a0352ab | 2017-03-14 14:24:35 -0700 | [diff] [blame] | 3 | * |
dp-arm | fa3cf0b | 2017-05-03 09:38:09 +0100 | [diff] [blame^] | 4 | * SPDX-License-Identifier: BSD-3-Clause |
Varun Wadekar | a0352ab | 2017-03-14 14:24:35 -0700 | [diff] [blame] | 5 | */ |
| 6 | |
| 7 | #include <arch.h> |
| 8 | #include <arch_helpers.h> |
Steven Kao | d346dca | 2016-12-23 16:17:18 +0800 | [diff] [blame] | 9 | #include <assert.h> |
Varun Wadekar | a0352ab | 2017-03-14 14:24:35 -0700 | [diff] [blame] | 10 | #include <debug.h> |
Steven Kao | d346dca | 2016-12-23 16:17:18 +0800 | [diff] [blame] | 11 | #include <delay_timer.h> |
Varun Wadekar | a0352ab | 2017-03-14 14:24:35 -0700 | [diff] [blame] | 12 | #include <denver.h> |
| 13 | #include <mmio.h> |
Varun Wadekar | b556828 | 2016-12-13 18:04:35 -0800 | [diff] [blame] | 14 | #include <mce_private.h> |
Steven Kao | d346dca | 2016-12-23 16:17:18 +0800 | [diff] [blame] | 15 | #include <platform.h> |
Varun Wadekar | a0352ab | 2017-03-14 14:24:35 -0700 | [diff] [blame] | 16 | #include <sys/errno.h> |
| 17 | #include <t18x_ari.h> |
| 18 | |
| 19 | /******************************************************************************* |
| 20 | * Register offsets for ARI request/results |
| 21 | ******************************************************************************/ |
| 22 | #define ARI_REQUEST 0x0 |
| 23 | #define ARI_REQUEST_EVENT_MASK 0x4 |
| 24 | #define ARI_STATUS 0x8 |
| 25 | #define ARI_REQUEST_DATA_LO 0xC |
| 26 | #define ARI_REQUEST_DATA_HI 0x10 |
| 27 | #define ARI_RESPONSE_DATA_LO 0x14 |
| 28 | #define ARI_RESPONSE_DATA_HI 0x18 |
| 29 | |
| 30 | /* Status values for the current request */ |
Steven Kao | d346dca | 2016-12-23 16:17:18 +0800 | [diff] [blame] | 31 | #define ARI_REQ_PENDING 1U |
| 32 | #define ARI_REQ_ONGOING 3U |
| 33 | #define ARI_REQUEST_VALID_BIT (1U << 8) |
| 34 | #define ARI_EVT_MASK_STANDBYWFI_BIT (1U << 7) |
| 35 | |
| 36 | /* default timeout (ms) to wait for ARI completion */ |
| 37 | #define ARI_MAX_RETRY_COUNT 2000 |
Varun Wadekar | a0352ab | 2017-03-14 14:24:35 -0700 | [diff] [blame] | 38 | |
| 39 | /******************************************************************************* |
| 40 | * ARI helper functions |
| 41 | ******************************************************************************/ |
| 42 | static inline uint32_t ari_read_32(uint32_t ari_base, uint32_t reg) |
| 43 | { |
| 44 | return mmio_read_32(ari_base + reg); |
| 45 | } |
| 46 | |
| 47 | static inline void ari_write_32(uint32_t ari_base, uint32_t val, uint32_t reg) |
| 48 | { |
| 49 | mmio_write_32(ari_base + reg, val); |
| 50 | } |
| 51 | |
| 52 | static inline uint32_t ari_get_request_low(uint32_t ari_base) |
| 53 | { |
| 54 | return ari_read_32(ari_base, ARI_REQUEST_DATA_LO); |
| 55 | } |
| 56 | |
| 57 | static inline uint32_t ari_get_request_high(uint32_t ari_base) |
| 58 | { |
| 59 | return ari_read_32(ari_base, ARI_REQUEST_DATA_HI); |
| 60 | } |
| 61 | |
| 62 | static inline uint32_t ari_get_response_low(uint32_t ari_base) |
| 63 | { |
| 64 | return ari_read_32(ari_base, ARI_RESPONSE_DATA_LO); |
| 65 | } |
| 66 | |
| 67 | static inline uint32_t ari_get_response_high(uint32_t ari_base) |
| 68 | { |
| 69 | return ari_read_32(ari_base, ARI_RESPONSE_DATA_HI); |
| 70 | } |
| 71 | |
| 72 | static inline void ari_clobber_response(uint32_t ari_base) |
| 73 | { |
| 74 | ari_write_32(ari_base, 0, ARI_RESPONSE_DATA_LO); |
| 75 | ari_write_32(ari_base, 0, ARI_RESPONSE_DATA_HI); |
| 76 | } |
| 77 | |
| 78 | static int ari_request_wait(uint32_t ari_base, uint32_t evt_mask, uint32_t req, |
| 79 | uint32_t lo, uint32_t hi) |
| 80 | { |
Steven Kao | d346dca | 2016-12-23 16:17:18 +0800 | [diff] [blame] | 81 | uint32_t retries = ARI_MAX_RETRY_COUNT; |
| 82 | uint32_t status; |
Varun Wadekar | a0352ab | 2017-03-14 14:24:35 -0700 | [diff] [blame] | 83 | |
| 84 | /* program the request, event_mask, hi and lo registers */ |
| 85 | ari_write_32(ari_base, lo, ARI_REQUEST_DATA_LO); |
| 86 | ari_write_32(ari_base, hi, ARI_REQUEST_DATA_HI); |
| 87 | ari_write_32(ari_base, evt_mask, ARI_REQUEST_EVENT_MASK); |
| 88 | ari_write_32(ari_base, req | ARI_REQUEST_VALID_BIT, ARI_REQUEST); |
| 89 | |
| 90 | /* |
| 91 | * For commands that have an event trigger, we should bypass |
| 92 | * ARI_STATUS polling, since MCE is waiting for SW to trigger |
| 93 | * the event. |
| 94 | */ |
| 95 | if (evt_mask) |
| 96 | return 0; |
| 97 | |
Steven Kao | d346dca | 2016-12-23 16:17:18 +0800 | [diff] [blame] | 98 | /* For shutdown/reboot commands, we dont have to check for timeouts */ |
| 99 | if ((req == (uint32_t)TEGRA_ARI_MISC_CCPLEX) && |
| 100 | ((lo == (uint32_t)TEGRA_ARI_MISC_CCPLEX_SHUTDOWN_POWER_OFF) || |
| 101 | (lo == (uint32_t)TEGRA_ARI_MISC_CCPLEX_SHUTDOWN_REBOOT))) { |
| 102 | return 0; |
| 103 | } |
| 104 | |
| 105 | /* |
| 106 | * Wait for the command response for not more than the timeout |
| 107 | */ |
| 108 | while (retries != 0U) { |
| 109 | |
| 110 | /* read the command status */ |
Varun Wadekar | a0352ab | 2017-03-14 14:24:35 -0700 | [diff] [blame] | 111 | status = ari_read_32(ari_base, ARI_STATUS); |
Steven Kao | d346dca | 2016-12-23 16:17:18 +0800 | [diff] [blame] | 112 | if ((status & (ARI_REQ_ONGOING | ARI_REQ_PENDING)) == 0U) |
| 113 | break; |
| 114 | |
| 115 | /* delay 1 ms */ |
| 116 | mdelay(1); |
| 117 | |
| 118 | /* decrement the retry count */ |
| 119 | retries--; |
| 120 | } |
| 121 | |
| 122 | /* assert if the command timed out */ |
| 123 | if (retries == 0U) { |
| 124 | ERROR("ARI request timed out: req %d on CPU %d\n", |
| 125 | req, plat_my_core_pos()); |
| 126 | assert(retries != 0U); |
| 127 | } |
Varun Wadekar | a0352ab | 2017-03-14 14:24:35 -0700 | [diff] [blame] | 128 | |
| 129 | return 0; |
| 130 | } |
| 131 | |
| 132 | int ari_enter_cstate(uint32_t ari_base, uint32_t state, uint32_t wake_time) |
| 133 | { |
| 134 | /* check for allowed power state */ |
| 135 | if (state != TEGRA_ARI_CORE_C0 && state != TEGRA_ARI_CORE_C1 && |
| 136 | state != TEGRA_ARI_CORE_C6 && state != TEGRA_ARI_CORE_C7) { |
| 137 | ERROR("%s: unknown cstate (%d)\n", __func__, state); |
| 138 | return EINVAL; |
| 139 | } |
| 140 | |
Krishna Sitaraman | 282e583 | 2016-07-28 13:54:29 -0700 | [diff] [blame] | 141 | /* clean the previous response state */ |
| 142 | ari_clobber_response(ari_base); |
| 143 | |
Varun Wadekar | a0352ab | 2017-03-14 14:24:35 -0700 | [diff] [blame] | 144 | /* Enter the cstate, to be woken up after wake_time (TSC ticks) */ |
| 145 | return ari_request_wait(ari_base, ARI_EVT_MASK_STANDBYWFI_BIT, |
| 146 | TEGRA_ARI_ENTER_CSTATE, state, wake_time); |
| 147 | } |
| 148 | |
| 149 | int ari_update_cstate_info(uint32_t ari_base, uint32_t cluster, uint32_t ccplex, |
| 150 | uint32_t system, uint8_t sys_state_force, uint32_t wake_mask, |
| 151 | uint8_t update_wake_mask) |
| 152 | { |
| 153 | uint32_t val = 0; |
| 154 | |
Krishna Sitaraman | 282e583 | 2016-07-28 13:54:29 -0700 | [diff] [blame] | 155 | /* clean the previous response state */ |
| 156 | ari_clobber_response(ari_base); |
| 157 | |
Varun Wadekar | a0352ab | 2017-03-14 14:24:35 -0700 | [diff] [blame] | 158 | /* update CLUSTER_CSTATE? */ |
| 159 | if (cluster) |
| 160 | val |= (cluster & CLUSTER_CSTATE_MASK) | |
| 161 | CLUSTER_CSTATE_UPDATE_BIT; |
| 162 | |
| 163 | /* update CCPLEX_CSTATE? */ |
| 164 | if (ccplex) |
| 165 | val |= (ccplex & CCPLEX_CSTATE_MASK) << CCPLEX_CSTATE_SHIFT | |
| 166 | CCPLEX_CSTATE_UPDATE_BIT; |
| 167 | |
| 168 | /* update SYSTEM_CSTATE? */ |
| 169 | if (system) |
| 170 | val |= ((system & SYSTEM_CSTATE_MASK) << SYSTEM_CSTATE_SHIFT) | |
| 171 | ((sys_state_force << SYSTEM_CSTATE_FORCE_UPDATE_SHIFT) | |
| 172 | SYSTEM_CSTATE_UPDATE_BIT); |
| 173 | |
| 174 | /* update wake mask value? */ |
| 175 | if (update_wake_mask) |
| 176 | val |= CSTATE_WAKE_MASK_UPDATE_BIT; |
| 177 | |
| 178 | /* set the updated cstate info */ |
| 179 | return ari_request_wait(ari_base, 0, TEGRA_ARI_UPDATE_CSTATE_INFO, val, |
| 180 | wake_mask); |
| 181 | } |
| 182 | |
| 183 | int ari_update_crossover_time(uint32_t ari_base, uint32_t type, uint32_t time) |
| 184 | { |
| 185 | /* sanity check crossover type */ |
| 186 | if ((type == TEGRA_ARI_CROSSOVER_C1_C6) || |
| 187 | (type > TEGRA_ARI_CROSSOVER_CCP3_SC1)) |
| 188 | return EINVAL; |
| 189 | |
Krishna Sitaraman | 282e583 | 2016-07-28 13:54:29 -0700 | [diff] [blame] | 190 | /* clean the previous response state */ |
| 191 | ari_clobber_response(ari_base); |
| 192 | |
Varun Wadekar | a0352ab | 2017-03-14 14:24:35 -0700 | [diff] [blame] | 193 | /* update crossover threshold time */ |
| 194 | return ari_request_wait(ari_base, 0, TEGRA_ARI_UPDATE_CROSSOVER, |
| 195 | type, time); |
| 196 | } |
| 197 | |
| 198 | uint64_t ari_read_cstate_stats(uint32_t ari_base, uint32_t state) |
| 199 | { |
| 200 | int ret; |
| 201 | |
| 202 | /* sanity check crossover type */ |
| 203 | if (state == 0) |
| 204 | return EINVAL; |
| 205 | |
Krishna Sitaraman | 282e583 | 2016-07-28 13:54:29 -0700 | [diff] [blame] | 206 | /* clean the previous response state */ |
| 207 | ari_clobber_response(ari_base); |
| 208 | |
Varun Wadekar | a0352ab | 2017-03-14 14:24:35 -0700 | [diff] [blame] | 209 | ret = ari_request_wait(ari_base, 0, TEGRA_ARI_CSTATE_STATS, state, 0); |
| 210 | if (ret != 0) |
| 211 | return EINVAL; |
| 212 | |
| 213 | return (uint64_t)ari_get_response_low(ari_base); |
| 214 | } |
| 215 | |
| 216 | int ari_write_cstate_stats(uint32_t ari_base, uint32_t state, uint32_t stats) |
| 217 | { |
Krishna Sitaraman | 282e583 | 2016-07-28 13:54:29 -0700 | [diff] [blame] | 218 | /* clean the previous response state */ |
| 219 | ari_clobber_response(ari_base); |
| 220 | |
Varun Wadekar | a0352ab | 2017-03-14 14:24:35 -0700 | [diff] [blame] | 221 | /* write the cstate stats */ |
| 222 | return ari_request_wait(ari_base, 0, TEGRA_ARI_WRITE_CSTATE_STATS, state, |
| 223 | stats); |
| 224 | } |
| 225 | |
| 226 | uint64_t ari_enumeration_misc(uint32_t ari_base, uint32_t cmd, uint32_t data) |
| 227 | { |
| 228 | uint64_t resp; |
| 229 | int ret; |
| 230 | |
| 231 | /* clean the previous response state */ |
| 232 | ari_clobber_response(ari_base); |
| 233 | |
| 234 | /* ARI_REQUEST_DATA_HI is reserved for commands other than 'ECHO' */ |
| 235 | if (cmd != TEGRA_ARI_MISC_ECHO) |
| 236 | data = 0; |
| 237 | |
| 238 | ret = ari_request_wait(ari_base, 0, TEGRA_ARI_MISC, cmd, data); |
| 239 | if (ret) |
| 240 | return (uint64_t)ret; |
| 241 | |
| 242 | /* get the command response */ |
| 243 | resp = ari_get_response_low(ari_base); |
| 244 | resp |= ((uint64_t)ari_get_response_high(ari_base) << 32); |
| 245 | |
| 246 | return resp; |
| 247 | } |
| 248 | |
| 249 | int ari_is_ccx_allowed(uint32_t ari_base, uint32_t state, uint32_t wake_time) |
| 250 | { |
| 251 | int ret; |
| 252 | |
Krishna Sitaraman | 282e583 | 2016-07-28 13:54:29 -0700 | [diff] [blame] | 253 | /* clean the previous response state */ |
| 254 | ari_clobber_response(ari_base); |
| 255 | |
Varun Wadekar | a0352ab | 2017-03-14 14:24:35 -0700 | [diff] [blame] | 256 | ret = ari_request_wait(ari_base, 0, TEGRA_ARI_IS_CCX_ALLOWED, state & 0x7, |
| 257 | wake_time); |
| 258 | if (ret) { |
| 259 | ERROR("%s: failed (%d)\n", __func__, ret); |
| 260 | return 0; |
| 261 | } |
| 262 | |
| 263 | /* 1 = CCx allowed, 0 = CCx not allowed */ |
| 264 | return (ari_get_response_low(ari_base) & 0x1); |
| 265 | } |
| 266 | |
| 267 | int ari_is_sc7_allowed(uint32_t ari_base, uint32_t state, uint32_t wake_time) |
| 268 | { |
| 269 | int ret; |
| 270 | |
| 271 | /* check for allowed power state */ |
| 272 | if (state != TEGRA_ARI_CORE_C0 && state != TEGRA_ARI_CORE_C1 && |
| 273 | state != TEGRA_ARI_CORE_C6 && state != TEGRA_ARI_CORE_C7) { |
| 274 | ERROR("%s: unknown cstate (%d)\n", __func__, state); |
| 275 | return EINVAL; |
| 276 | } |
| 277 | |
Krishna Sitaraman | 282e583 | 2016-07-28 13:54:29 -0700 | [diff] [blame] | 278 | /* clean the previous response state */ |
| 279 | ari_clobber_response(ari_base); |
| 280 | |
Varun Wadekar | a0352ab | 2017-03-14 14:24:35 -0700 | [diff] [blame] | 281 | ret = ari_request_wait(ari_base, 0, TEGRA_ARI_IS_SC7_ALLOWED, state, |
| 282 | wake_time); |
| 283 | if (ret) { |
| 284 | ERROR("%s: failed (%d)\n", __func__, ret); |
| 285 | return 0; |
| 286 | } |
| 287 | |
| 288 | /* 1 = SC7 allowed, 0 = SC7 not allowed */ |
| 289 | return !!ari_get_response_low(ari_base); |
| 290 | } |
| 291 | |
| 292 | int ari_online_core(uint32_t ari_base, uint32_t core) |
| 293 | { |
| 294 | int cpu = read_mpidr() & MPIDR_CPU_MASK; |
| 295 | int cluster = (read_mpidr() & MPIDR_CLUSTER_MASK) >> |
| 296 | MPIDR_AFFINITY_BITS; |
| 297 | int impl = (read_midr() >> MIDR_IMPL_SHIFT) & MIDR_IMPL_MASK; |
| 298 | |
| 299 | /* construct the current CPU # */ |
| 300 | cpu |= (cluster << 2); |
| 301 | |
| 302 | /* sanity check target core id */ |
| 303 | if ((core >= MCE_CORE_ID_MAX) || (cpu == core)) { |
| 304 | ERROR("%s: unsupported core id (%d)\n", __func__, core); |
| 305 | return EINVAL; |
| 306 | } |
| 307 | |
| 308 | /* |
| 309 | * The Denver cluster has 2 CPUs only - 0, 1. |
| 310 | */ |
| 311 | if (impl == DENVER_IMPL && ((core == 2) || (core == 3))) { |
| 312 | ERROR("%s: unknown core id (%d)\n", __func__, core); |
| 313 | return EINVAL; |
| 314 | } |
| 315 | |
Krishna Sitaraman | 282e583 | 2016-07-28 13:54:29 -0700 | [diff] [blame] | 316 | /* clean the previous response state */ |
| 317 | ari_clobber_response(ari_base); |
| 318 | |
Varun Wadekar | a0352ab | 2017-03-14 14:24:35 -0700 | [diff] [blame] | 319 | return ari_request_wait(ari_base, 0, TEGRA_ARI_ONLINE_CORE, core, 0); |
| 320 | } |
| 321 | |
| 322 | int ari_cc3_ctrl(uint32_t ari_base, uint32_t freq, uint32_t volt, uint8_t enable) |
| 323 | { |
| 324 | int val; |
| 325 | |
Krishna Sitaraman | 282e583 | 2016-07-28 13:54:29 -0700 | [diff] [blame] | 326 | /* clean the previous response state */ |
| 327 | ari_clobber_response(ari_base); |
| 328 | |
Varun Wadekar | a0352ab | 2017-03-14 14:24:35 -0700 | [diff] [blame] | 329 | /* |
| 330 | * If the enable bit is cleared, Auto-CC3 will be disabled by setting |
| 331 | * the SW visible voltage/frequency request registers for all non |
| 332 | * floorswept cores valid independent of StandbyWFI and disabling |
| 333 | * the IDLE voltage/frequency request register. If set, Auto-CC3 |
| 334 | * will be enabled by setting the ARM SW visible voltage/frequency |
| 335 | * request registers for all non floorswept cores to be enabled by |
| 336 | * StandbyWFI or the equivalent signal, and always keeping the IDLE |
| 337 | * voltage/frequency request register enabled. |
| 338 | */ |
| 339 | val = (((freq & MCE_AUTO_CC3_FREQ_MASK) << MCE_AUTO_CC3_FREQ_SHIFT) |\ |
| 340 | ((volt & MCE_AUTO_CC3_VTG_MASK) << MCE_AUTO_CC3_VTG_SHIFT) |\ |
| 341 | (enable ? MCE_AUTO_CC3_ENABLE_BIT : 0)); |
| 342 | |
| 343 | return ari_request_wait(ari_base, 0, TEGRA_ARI_CC3_CTRL, val, 0); |
| 344 | } |
| 345 | |
Krishna Sitaraman | d007f76 | 2016-09-02 16:53:04 -0700 | [diff] [blame] | 346 | int ari_reset_vector_update(uint32_t ari_base) |
Varun Wadekar | a0352ab | 2017-03-14 14:24:35 -0700 | [diff] [blame] | 347 | { |
Krishna Sitaraman | 282e583 | 2016-07-28 13:54:29 -0700 | [diff] [blame] | 348 | /* clean the previous response state */ |
| 349 | ari_clobber_response(ari_base); |
| 350 | |
Varun Wadekar | a0352ab | 2017-03-14 14:24:35 -0700 | [diff] [blame] | 351 | /* |
| 352 | * Need to program the CPU reset vector one time during cold boot |
| 353 | * and SC7 exit |
| 354 | */ |
Krishna Sitaraman | d007f76 | 2016-09-02 16:53:04 -0700 | [diff] [blame] | 355 | ari_request_wait(ari_base, 0, TEGRA_ARI_COPY_MISCREG_AA64_RST, 0, 0); |
Varun Wadekar | a0352ab | 2017-03-14 14:24:35 -0700 | [diff] [blame] | 356 | |
| 357 | return 0; |
| 358 | } |
| 359 | |
| 360 | int ari_roc_flush_cache_trbits(uint32_t ari_base) |
| 361 | { |
Krishna Sitaraman | 282e583 | 2016-07-28 13:54:29 -0700 | [diff] [blame] | 362 | /* clean the previous response state */ |
| 363 | ari_clobber_response(ari_base); |
| 364 | |
Varun Wadekar | a0352ab | 2017-03-14 14:24:35 -0700 | [diff] [blame] | 365 | return ari_request_wait(ari_base, 0, TEGRA_ARI_ROC_FLUSH_CACHE_TRBITS, |
| 366 | 0, 0); |
| 367 | } |
| 368 | |
| 369 | int ari_roc_flush_cache(uint32_t ari_base) |
| 370 | { |
Krishna Sitaraman | 282e583 | 2016-07-28 13:54:29 -0700 | [diff] [blame] | 371 | /* clean the previous response state */ |
| 372 | ari_clobber_response(ari_base); |
| 373 | |
Varun Wadekar | a0352ab | 2017-03-14 14:24:35 -0700 | [diff] [blame] | 374 | return ari_request_wait(ari_base, 0, TEGRA_ARI_ROC_FLUSH_CACHE_ONLY, |
| 375 | 0, 0); |
| 376 | } |
| 377 | |
| 378 | int ari_roc_clean_cache(uint32_t ari_base) |
| 379 | { |
Krishna Sitaraman | 282e583 | 2016-07-28 13:54:29 -0700 | [diff] [blame] | 380 | /* clean the previous response state */ |
| 381 | ari_clobber_response(ari_base); |
| 382 | |
Varun Wadekar | a0352ab | 2017-03-14 14:24:35 -0700 | [diff] [blame] | 383 | return ari_request_wait(ari_base, 0, TEGRA_ARI_ROC_CLEAN_CACHE_ONLY, |
| 384 | 0, 0); |
| 385 | } |
| 386 | |
| 387 | uint64_t ari_read_write_mca(uint32_t ari_base, mca_cmd_t cmd, uint64_t *data) |
| 388 | { |
| 389 | mca_arg_t mca_arg; |
| 390 | int ret; |
| 391 | |
| 392 | /* Set data (write) */ |
| 393 | mca_arg.data = data ? *data : 0ull; |
| 394 | |
| 395 | /* Set command */ |
| 396 | ari_write_32(ari_base, cmd.input.low, ARI_RESPONSE_DATA_LO); |
| 397 | ari_write_32(ari_base, cmd.input.high, ARI_RESPONSE_DATA_HI); |
| 398 | |
| 399 | ret = ari_request_wait(ari_base, 0, TEGRA_ARI_MCA, mca_arg.arg.low, |
| 400 | mca_arg.arg.high); |
| 401 | if (!ret) { |
| 402 | mca_arg.arg.low = ari_get_response_low(ari_base); |
| 403 | mca_arg.arg.high = ari_get_response_high(ari_base); |
| 404 | if (!mca_arg.err.finish) |
| 405 | return (uint64_t)mca_arg.err.error; |
| 406 | |
| 407 | if (data) { |
| 408 | mca_arg.arg.low = ari_get_request_low(ari_base); |
| 409 | mca_arg.arg.high = ari_get_request_high(ari_base); |
| 410 | *data = mca_arg.data; |
| 411 | } |
| 412 | } |
| 413 | |
| 414 | return 0; |
| 415 | } |
| 416 | |
| 417 | int ari_update_ccplex_gsc(uint32_t ari_base, uint32_t gsc_idx) |
| 418 | { |
| 419 | /* sanity check GSC ID */ |
| 420 | if (gsc_idx > TEGRA_ARI_GSC_VPR_IDX) |
| 421 | return EINVAL; |
| 422 | |
Krishna Sitaraman | 282e583 | 2016-07-28 13:54:29 -0700 | [diff] [blame] | 423 | /* clean the previous response state */ |
| 424 | ari_clobber_response(ari_base); |
| 425 | |
Varun Wadekar | a0352ab | 2017-03-14 14:24:35 -0700 | [diff] [blame] | 426 | /* |
| 427 | * The MCE code will read the GSC carveout value, corrseponding to |
| 428 | * the ID, from the MC registers and update the internal GSC registers |
| 429 | * of the CCPLEX. |
| 430 | */ |
| 431 | ari_request_wait(ari_base, 0, TEGRA_ARI_UPDATE_CCPLEX_GSC, gsc_idx, 0); |
| 432 | |
| 433 | return 0; |
| 434 | } |
| 435 | |
| 436 | void ari_enter_ccplex_state(uint32_t ari_base, uint32_t state_idx) |
| 437 | { |
Krishna Sitaraman | 282e583 | 2016-07-28 13:54:29 -0700 | [diff] [blame] | 438 | /* clean the previous response state */ |
| 439 | ari_clobber_response(ari_base); |
| 440 | |
Varun Wadekar | a0352ab | 2017-03-14 14:24:35 -0700 | [diff] [blame] | 441 | /* |
| 442 | * The MCE will shutdown or restart the entire system |
| 443 | */ |
| 444 | (void)ari_request_wait(ari_base, 0, TEGRA_ARI_MISC_CCPLEX, state_idx, 0); |
| 445 | } |
Varun Wadekar | 4ff3e8d | 2016-04-29 10:40:02 -0700 | [diff] [blame] | 446 | |
| 447 | int ari_read_write_uncore_perfmon(uint32_t ari_base, |
| 448 | uncore_perfmon_req_t req, uint64_t *data) |
| 449 | { |
| 450 | int ret; |
| 451 | uint32_t val; |
| 452 | |
Krishna Sitaraman | 282e583 | 2016-07-28 13:54:29 -0700 | [diff] [blame] | 453 | /* clean the previous response state */ |
| 454 | ari_clobber_response(ari_base); |
| 455 | |
Varun Wadekar | 4ff3e8d | 2016-04-29 10:40:02 -0700 | [diff] [blame] | 456 | /* sanity check input parameters */ |
| 457 | if (req.perfmon_command.cmd == UNCORE_PERFMON_CMD_READ && !data) { |
| 458 | ERROR("invalid parameters\n"); |
| 459 | return EINVAL; |
| 460 | } |
| 461 | |
| 462 | /* |
| 463 | * For "write" commands get the value that has to be written |
| 464 | * to the uncore perfmon registers |
| 465 | */ |
| 466 | val = (req.perfmon_command.cmd == UNCORE_PERFMON_CMD_WRITE) ? |
| 467 | *data : 0; |
| 468 | |
| 469 | ret = ari_request_wait(ari_base, 0, TEGRA_ARI_PERFMON, val, req.data); |
| 470 | if (ret) |
| 471 | return ret; |
| 472 | |
| 473 | /* read the command status value */ |
| 474 | req.perfmon_status.val = ari_get_response_high(ari_base) & |
| 475 | UNCORE_PERFMON_RESP_STATUS_MASK; |
| 476 | |
| 477 | /* |
| 478 | * For "read" commands get the data from the uncore |
| 479 | * perfmon registers |
| 480 | */ |
| 481 | if ((req.perfmon_status.val == 0) && (req.perfmon_command.cmd == |
| 482 | UNCORE_PERFMON_CMD_READ)) |
| 483 | *data = ari_get_response_low(ari_base); |
| 484 | |
| 485 | return (int)req.perfmon_status.val; |
| 486 | } |
Krishna Sitaraman | b429d56 | 2016-07-19 16:36:13 -0700 | [diff] [blame] | 487 | |
| 488 | void ari_misc_ccplex(uint32_t ari_base, uint32_t index, uint32_t value) |
| 489 | { |
| 490 | /* |
| 491 | * This invokes the ARI_MISC_CCPLEX commands. This can be |
| 492 | * used to enable/disable coresight clock gating. |
| 493 | */ |
| 494 | |
Rich Wiley | 24e9939 | 2017-01-04 10:45:44 -0800 | [diff] [blame] | 495 | if ((index > TEGRA_ARI_MISC_CCPLEX_EDBGREQ) || |
Krishna Sitaraman | b429d56 | 2016-07-19 16:36:13 -0700 | [diff] [blame] | 496 | ((index == TEGRA_ARI_MISC_CCPLEX_CORESIGHT_CG_CTRL) && |
| 497 | (value > 1))) { |
| 498 | ERROR("%s: invalid parameters \n", __func__); |
| 499 | return; |
| 500 | } |
| 501 | |
| 502 | /* clean the previous response state */ |
| 503 | ari_clobber_response(ari_base); |
| 504 | (void)ari_request_wait(ari_base, 0, TEGRA_ARI_MISC_CCPLEX, index, value); |
| 505 | } |