Jay Buddhabhatti | c6daff0 | 2022-09-05 02:56:32 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2022, Xilinx, Inc. All rights reserved. |
Jay Buddhabhatti | 1251174 | 2022-12-22 20:56:02 -0800 | [diff] [blame] | 3 | * Copyright (c) 2022-2023, Advanced Micro Devices, Inc. All rights reserved. |
Jay Buddhabhatti | c6daff0 | 2022-09-05 02:56:32 -0700 | [diff] [blame] | 4 | * |
| 5 | * SPDX-License-Identifier: BSD-3-Clause |
| 6 | */ |
| 7 | |
| 8 | /* |
| 9 | * APU specific definition of processors in the subsystem as well as functions |
| 10 | * for getting information about and changing state of the APU. |
| 11 | */ |
| 12 | |
| 13 | #include <assert.h> |
| 14 | |
| 15 | #include <drivers/arm/gic_common.h> |
| 16 | #include <drivers/arm/gicv3.h> |
| 17 | #include <lib/bakery_lock.h> |
| 18 | #include <lib/mmio.h> |
Jay Buddhabhatti | c6d624b | 2023-03-02 02:47:36 -0800 | [diff] [blame] | 19 | #include <lib/spinlock.h> |
Prasad Kummari | 536e110 | 2023-06-22 10:50:02 +0530 | [diff] [blame] | 20 | #include <lib/utils.h> |
Jay Buddhabhatti | c6daff0 | 2022-09-05 02:56:32 -0700 | [diff] [blame] | 21 | #include <plat/common/platform.h> |
| 22 | |
| 23 | #include <plat_ipi.h> |
| 24 | #include <platform_def.h> |
| 25 | #include "pm_api_sys.h" |
| 26 | #include "pm_client.h" |
| 27 | #include <versal_net_def.h> |
| 28 | |
| 29 | #define UNDEFINED_CPUID (~0) |
| 30 | |
| 31 | DEFINE_RENAME_SYSREG_RW_FUNCS(cpu_pwrctrl_val, S3_0_C15_C2_7) |
Jay Buddhabhatti | c6d624b | 2023-03-02 02:47:36 -0800 | [diff] [blame] | 32 | |
| 33 | /* |
| 34 | * ARM v8.2, the cache will turn off automatically when cpu |
| 35 | * power down. Therefore, there is no doubt to use the spin_lock here. |
| 36 | */ |
| 37 | #if !HW_ASSISTED_COHERENCY |
Jay Buddhabhatti | c6daff0 | 2022-09-05 02:56:32 -0700 | [diff] [blame] | 38 | DEFINE_BAKERY_LOCK(pm_client_secure_lock); |
Jay Buddhabhatti | c6d624b | 2023-03-02 02:47:36 -0800 | [diff] [blame] | 39 | static inline void pm_client_lock_get(void) |
| 40 | { |
| 41 | bakery_lock_get(&pm_client_secure_lock); |
| 42 | } |
| 43 | |
| 44 | static inline void pm_client_lock_release(void) |
| 45 | { |
| 46 | bakery_lock_release(&pm_client_secure_lock); |
| 47 | } |
| 48 | #else |
| 49 | spinlock_t pm_client_secure_lock; |
| 50 | static inline void pm_client_lock_get(void) |
| 51 | { |
| 52 | spin_lock(&pm_client_secure_lock); |
| 53 | } |
| 54 | |
| 55 | static inline void pm_client_lock_release(void) |
| 56 | { |
| 57 | spin_unlock(&pm_client_secure_lock); |
| 58 | } |
| 59 | #endif |
Jay Buddhabhatti | c6daff0 | 2022-09-05 02:56:32 -0700 | [diff] [blame] | 60 | |
| 61 | static const struct pm_ipi apu_ipi = { |
Michal Simek | 3a63f05 | 2023-04-25 14:21:20 +0200 | [diff] [blame] | 62 | .local_ipi_id = IPI_LOCAL_ID, |
| 63 | .remote_ipi_id = IPI_REMOTE_ID, |
Michal Simek | 9a8da50 | 2023-04-25 14:04:02 +0200 | [diff] [blame] | 64 | .buffer_base = IPI_BUFFER_LOCAL_BASE, |
Jay Buddhabhatti | c6daff0 | 2022-09-05 02:56:32 -0700 | [diff] [blame] | 65 | }; |
| 66 | |
| 67 | /* Order in pm_procs_all array must match cpu ids */ |
| 68 | static const struct pm_proc pm_procs_all[] = { |
| 69 | { |
| 70 | .node_id = PM_DEV_CLUSTER0_ACPU_0, |
| 71 | .ipi = &apu_ipi, |
| 72 | .pwrdn_mask = 0, |
| 73 | }, |
| 74 | { |
| 75 | .node_id = PM_DEV_CLUSTER0_ACPU_1, |
| 76 | .ipi = &apu_ipi, |
| 77 | .pwrdn_mask = 0, |
| 78 | }, |
| 79 | { |
| 80 | .node_id = PM_DEV_CLUSTER0_ACPU_2, |
| 81 | .ipi = &apu_ipi, |
| 82 | .pwrdn_mask = 0, |
| 83 | }, |
| 84 | { |
| 85 | .node_id = PM_DEV_CLUSTER0_ACPU_3, |
| 86 | .ipi = &apu_ipi, |
| 87 | .pwrdn_mask = 0, |
| 88 | }, |
| 89 | { |
| 90 | .node_id = PM_DEV_CLUSTER1_ACPU_0, |
| 91 | .ipi = &apu_ipi, |
| 92 | .pwrdn_mask = 0, |
| 93 | }, |
| 94 | { |
| 95 | .node_id = PM_DEV_CLUSTER1_ACPU_1, |
| 96 | .ipi = &apu_ipi, |
| 97 | .pwrdn_mask = 0, |
| 98 | }, |
| 99 | { |
| 100 | .node_id = PM_DEV_CLUSTER1_ACPU_2, |
| 101 | .ipi = &apu_ipi, |
| 102 | .pwrdn_mask = 0, |
| 103 | }, |
| 104 | { |
| 105 | .node_id = PM_DEV_CLUSTER1_ACPU_3, |
| 106 | .ipi = &apu_ipi, |
| 107 | .pwrdn_mask = 0, |
| 108 | }, |
| 109 | { |
| 110 | .node_id = PM_DEV_CLUSTER2_ACPU_0, |
| 111 | .ipi = &apu_ipi, |
| 112 | .pwrdn_mask = 0, |
| 113 | }, |
| 114 | { |
| 115 | .node_id = PM_DEV_CLUSTER2_ACPU_1, |
| 116 | .ipi = &apu_ipi, |
| 117 | .pwrdn_mask = 0, |
| 118 | }, |
| 119 | { |
| 120 | .node_id = PM_DEV_CLUSTER2_ACPU_2, |
| 121 | .ipi = &apu_ipi, |
| 122 | .pwrdn_mask = 0, |
| 123 | }, |
| 124 | { |
| 125 | .node_id = PM_DEV_CLUSTER2_ACPU_3, |
| 126 | .ipi = &apu_ipi, |
| 127 | .pwrdn_mask = 0, |
| 128 | }, |
| 129 | { |
| 130 | .node_id = PM_DEV_CLUSTER3_ACPU_0, |
| 131 | .ipi = &apu_ipi, |
| 132 | .pwrdn_mask = 0, |
| 133 | }, |
| 134 | { |
| 135 | .node_id = PM_DEV_CLUSTER3_ACPU_1, |
| 136 | .ipi = &apu_ipi, |
| 137 | .pwrdn_mask = 0, |
| 138 | }, |
| 139 | { |
| 140 | .node_id = PM_DEV_CLUSTER3_ACPU_2, |
| 141 | .ipi = &apu_ipi, |
| 142 | .pwrdn_mask = 0, |
| 143 | }, |
| 144 | { |
| 145 | .node_id = PM_DEV_CLUSTER3_ACPU_3, |
| 146 | .ipi = &apu_ipi, |
| 147 | .pwrdn_mask = 0, |
| 148 | } |
| 149 | }; |
| 150 | |
| 151 | const struct pm_proc *primary_proc = &pm_procs_all[0]; |
| 152 | |
| 153 | /** |
Prasad Kummari | 7d0623a | 2023-06-09 14:32:00 +0530 | [diff] [blame] | 154 | * pm_get_proc() - returns pointer to the proc structure. |
| 155 | * @cpuid: id of the cpu whose proc struct pointer should be returned. |
Jay Buddhabhatti | c6daff0 | 2022-09-05 02:56:32 -0700 | [diff] [blame] | 156 | * |
Prasad Kummari | 7d0623a | 2023-06-09 14:32:00 +0530 | [diff] [blame] | 157 | * Return: Pointer to a proc structure if proc is found, otherwise NULL. |
| 158 | * |
Jay Buddhabhatti | c6daff0 | 2022-09-05 02:56:32 -0700 | [diff] [blame] | 159 | */ |
| 160 | const struct pm_proc *pm_get_proc(uint32_t cpuid) |
| 161 | { |
| 162 | if (cpuid < ARRAY_SIZE(pm_procs_all)) { |
| 163 | return &pm_procs_all[cpuid]; |
| 164 | } |
| 165 | |
| 166 | NOTICE("ERROR: cpuid: %d proc NULL\n", cpuid); |
| 167 | return NULL; |
| 168 | } |
| 169 | |
| 170 | /** |
Prasad Kummari | 7d0623a | 2023-06-09 14:32:00 +0530 | [diff] [blame] | 171 | * irq_to_pm_node_idx - Get PM node index corresponding to the interrupt number. |
| 172 | * @irq: Interrupt number. |
Jay Buddhabhatti | 1251174 | 2022-12-22 20:56:02 -0800 | [diff] [blame] | 173 | * |
Prasad Kummari | 7d0623a | 2023-06-09 14:32:00 +0530 | [diff] [blame] | 174 | * Return: PM node index corresponding to the specified interrupt. |
| 175 | * |
Jay Buddhabhatti | 1251174 | 2022-12-22 20:56:02 -0800 | [diff] [blame] | 176 | */ |
| 177 | enum pm_device_node_idx irq_to_pm_node_idx(uint32_t irq) |
| 178 | { |
| 179 | enum pm_device_node_idx dev_idx = XPM_NODEIDX_DEV_MIN; |
| 180 | |
| 181 | assert(irq <= IRQ_MAX); |
| 182 | |
| 183 | switch (irq) { |
| 184 | case 20: |
| 185 | dev_idx = XPM_NODEIDX_DEV_GPIO; |
| 186 | break; |
| 187 | case 21: |
| 188 | dev_idx = XPM_NODEIDX_DEV_I2C_0; |
| 189 | break; |
| 190 | case 22: |
| 191 | dev_idx = XPM_NODEIDX_DEV_I2C_1; |
| 192 | break; |
| 193 | case 23: |
| 194 | dev_idx = XPM_NODEIDX_DEV_SPI_0; |
| 195 | break; |
| 196 | case 24: |
| 197 | dev_idx = XPM_NODEIDX_DEV_SPI_1; |
| 198 | break; |
| 199 | case 25: |
| 200 | dev_idx = XPM_NODEIDX_DEV_UART_0; |
| 201 | break; |
| 202 | case 26: |
| 203 | dev_idx = XPM_NODEIDX_DEV_UART_1; |
| 204 | break; |
| 205 | case 27: |
| 206 | dev_idx = XPM_NODEIDX_DEV_CAN_FD_0; |
| 207 | break; |
| 208 | case 28: |
| 209 | dev_idx = XPM_NODEIDX_DEV_CAN_FD_1; |
| 210 | break; |
| 211 | case 29: |
| 212 | case 30: |
| 213 | case 31: |
| 214 | case 32: |
| 215 | case 33: |
| 216 | case 98: |
| 217 | dev_idx = XPM_NODEIDX_DEV_USB_0; |
| 218 | break; |
| 219 | case 34: |
| 220 | case 35: |
| 221 | case 36: |
| 222 | case 37: |
| 223 | case 38: |
| 224 | case 99: |
| 225 | dev_idx = XPM_NODEIDX_DEV_USB_1; |
| 226 | break; |
| 227 | case 39: |
| 228 | case 40: |
| 229 | dev_idx = XPM_NODEIDX_DEV_GEM_0; |
| 230 | break; |
| 231 | case 41: |
| 232 | case 42: |
| 233 | dev_idx = XPM_NODEIDX_DEV_GEM_1; |
| 234 | break; |
| 235 | case 43: |
| 236 | case 44: |
| 237 | case 45: |
| 238 | dev_idx = XPM_NODEIDX_DEV_TTC_0; |
| 239 | break; |
| 240 | case 46: |
| 241 | case 47: |
| 242 | case 48: |
| 243 | dev_idx = XPM_NODEIDX_DEV_TTC_1; |
| 244 | break; |
| 245 | case 49: |
| 246 | case 50: |
| 247 | case 51: |
| 248 | dev_idx = XPM_NODEIDX_DEV_TTC_2; |
| 249 | break; |
| 250 | case 52: |
| 251 | case 53: |
| 252 | case 54: |
| 253 | dev_idx = XPM_NODEIDX_DEV_TTC_3; |
| 254 | break; |
| 255 | case 72: |
| 256 | dev_idx = XPM_NODEIDX_DEV_ADMA_0; |
| 257 | break; |
| 258 | case 73: |
| 259 | dev_idx = XPM_NODEIDX_DEV_ADMA_1; |
| 260 | break; |
| 261 | case 74: |
| 262 | dev_idx = XPM_NODEIDX_DEV_ADMA_2; |
| 263 | break; |
| 264 | case 75: |
| 265 | dev_idx = XPM_NODEIDX_DEV_ADMA_3; |
| 266 | break; |
| 267 | case 76: |
| 268 | dev_idx = XPM_NODEIDX_DEV_ADMA_4; |
| 269 | break; |
| 270 | case 77: |
| 271 | dev_idx = XPM_NODEIDX_DEV_ADMA_5; |
| 272 | break; |
| 273 | case 78: |
| 274 | dev_idx = XPM_NODEIDX_DEV_ADMA_6; |
| 275 | break; |
| 276 | case 79: |
| 277 | dev_idx = XPM_NODEIDX_DEV_ADMA_7; |
| 278 | break; |
| 279 | case 184: |
| 280 | case 185: |
| 281 | dev_idx = XPM_NODEIDX_DEV_SDIO_0; |
| 282 | break; |
| 283 | case 186: |
| 284 | case 187: |
| 285 | dev_idx = XPM_NODEIDX_DEV_SDIO_1; |
| 286 | break; |
| 287 | case 200: |
| 288 | dev_idx = XPM_NODEIDX_DEV_RTC; |
| 289 | break; |
| 290 | default: |
| 291 | dev_idx = XPM_NODEIDX_DEV_MIN; |
| 292 | break; |
| 293 | } |
| 294 | |
| 295 | return dev_idx; |
| 296 | } |
| 297 | |
| 298 | /** |
Prasad Kummari | 7d0623a | 2023-06-09 14:32:00 +0530 | [diff] [blame] | 299 | * pm_client_suspend() - Client-specific suspend actions. This function |
| 300 | * should contain any PU-specific actions required |
| 301 | * prior to sending suspend request to PMU. Actions |
| 302 | * taken depend on the state system is suspending to. |
| 303 | * @proc: processor which need to suspend. |
| 304 | * @state: desired suspend state. |
Jay Buddhabhatti | c6daff0 | 2022-09-05 02:56:32 -0700 | [diff] [blame] | 305 | * |
Jay Buddhabhatti | c6daff0 | 2022-09-05 02:56:32 -0700 | [diff] [blame] | 306 | */ |
| 307 | void pm_client_suspend(const struct pm_proc *proc, uint32_t state) |
| 308 | { |
| 309 | uint32_t cpu_id = plat_my_core_pos(); |
| 310 | uintptr_t val; |
| 311 | |
Jay Buddhabhatti | c6d624b | 2023-03-02 02:47:36 -0800 | [diff] [blame] | 312 | pm_client_lock_get(); |
Jay Buddhabhatti | c6daff0 | 2022-09-05 02:56:32 -0700 | [diff] [blame] | 313 | |
Jay Buddhabhatti | 1251174 | 2022-12-22 20:56:02 -0800 | [diff] [blame] | 314 | if (state == PM_STATE_SUSPEND_TO_RAM) { |
| 315 | pm_client_set_wakeup_sources((uint32_t)proc->node_id); |
| 316 | } |
Jay Buddhabhatti | c6daff0 | 2022-09-05 02:56:32 -0700 | [diff] [blame] | 317 | |
| 318 | val = read_cpu_pwrctrl_val(); |
| 319 | val |= CORE_PWRDN_EN_BIT_MASK; |
| 320 | write_cpu_pwrctrl_val(val); |
| 321 | |
| 322 | isb(); |
| 323 | |
Jay Buddhabhatti | c235865 | 2022-12-29 21:47:54 -0800 | [diff] [blame] | 324 | /* Enable power down interrupt */ |
Jay Buddhabhatti | c6daff0 | 2022-09-05 02:56:32 -0700 | [diff] [blame] | 325 | mmio_write_32(APU_PCIL_CORE_X_IEN_POWER_REG(cpu_id), |
| 326 | APU_PCIL_CORE_X_IEN_POWER_MASK); |
Jay Buddhabhatti | 69e474e | 2022-12-29 21:54:44 -0800 | [diff] [blame] | 327 | /* Enable wake interrupt */ |
| 328 | mmio_write_32(APU_PCIL_CORE_X_IEN_WAKE_REG(cpu_id), |
| 329 | APU_PCIL_CORE_X_IEN_WAKE_MASK); |
Jay Buddhabhatti | c6daff0 | 2022-09-05 02:56:32 -0700 | [diff] [blame] | 330 | |
Jay Buddhabhatti | c6d624b | 2023-03-02 02:47:36 -0800 | [diff] [blame] | 331 | pm_client_lock_release(); |
Jay Buddhabhatti | c6daff0 | 2022-09-05 02:56:32 -0700 | [diff] [blame] | 332 | } |
| 333 | |
| 334 | /** |
Prasad Kummari | 7d0623a | 2023-06-09 14:32:00 +0530 | [diff] [blame] | 335 | * pm_get_cpuid() - get the local cpu ID for a global node ID. |
| 336 | * @nid: node id of the processor. |
Jay Buddhabhatti | c6daff0 | 2022-09-05 02:56:32 -0700 | [diff] [blame] | 337 | * |
Prasad Kummari | 7d0623a | 2023-06-09 14:32:00 +0530 | [diff] [blame] | 338 | * Return: the cpu ID (starting from 0) for the subsystem. |
| 339 | * |
Jay Buddhabhatti | c6daff0 | 2022-09-05 02:56:32 -0700 | [diff] [blame] | 340 | */ |
| 341 | static uint32_t pm_get_cpuid(uint32_t nid) |
| 342 | { |
| 343 | for (size_t i = 0; i < ARRAY_SIZE(pm_procs_all); i++) { |
| 344 | if (pm_procs_all[i].node_id == nid) { |
| 345 | return i; |
| 346 | } |
| 347 | } |
| 348 | return UNDEFINED_CPUID; |
| 349 | } |
| 350 | |
| 351 | /** |
Prasad Kummari | 7d0623a | 2023-06-09 14:32:00 +0530 | [diff] [blame] | 352 | * pm_client_wakeup() - Client-specific wakeup actions. |
| 353 | * @proc: Processor which need to wakeup. |
Jay Buddhabhatti | c6daff0 | 2022-09-05 02:56:32 -0700 | [diff] [blame] | 354 | * |
| 355 | * This function should contain any PU-specific actions |
Prasad Kummari | 7d0623a | 2023-06-09 14:32:00 +0530 | [diff] [blame] | 356 | * required for waking up another APU core. |
Jay Buddhabhatti | c6daff0 | 2022-09-05 02:56:32 -0700 | [diff] [blame] | 357 | * |
Jay Buddhabhatti | c6daff0 | 2022-09-05 02:56:32 -0700 | [diff] [blame] | 358 | */ |
| 359 | void pm_client_wakeup(const struct pm_proc *proc) |
| 360 | { |
| 361 | uint32_t cpuid = pm_get_cpuid(proc->node_id); |
Jay Buddhabhatti | 07d85c9 | 2022-12-29 22:15:19 -0800 | [diff] [blame] | 362 | uintptr_t val; |
Jay Buddhabhatti | c6daff0 | 2022-09-05 02:56:32 -0700 | [diff] [blame] | 363 | |
| 364 | if (cpuid == UNDEFINED_CPUID) { |
| 365 | return; |
| 366 | } |
| 367 | |
Jay Buddhabhatti | c6d624b | 2023-03-02 02:47:36 -0800 | [diff] [blame] | 368 | pm_client_lock_get(); |
Jay Buddhabhatti | c6daff0 | 2022-09-05 02:56:32 -0700 | [diff] [blame] | 369 | |
Jay Buddhabhatti | 07d85c9 | 2022-12-29 22:15:19 -0800 | [diff] [blame] | 370 | /* Clear powerdown request */ |
| 371 | val = read_cpu_pwrctrl_val(); |
| 372 | val &= ~CORE_PWRDN_EN_BIT_MASK; |
| 373 | write_cpu_pwrctrl_val(val); |
| 374 | |
| 375 | isb(); |
| 376 | |
| 377 | /* Disabled power down interrupt */ |
| 378 | mmio_write_32(APU_PCIL_CORE_X_IDS_POWER_REG(cpuid), |
| 379 | APU_PCIL_CORE_X_IDS_POWER_MASK); |
Jay Buddhabhatti | edfadb7 | 2022-12-29 22:21:00 -0800 | [diff] [blame] | 380 | /* Disable wake interrupt */ |
| 381 | mmio_write_32(APU_PCIL_CORE_X_IDS_WAKE_REG(cpuid), |
| 382 | APU_PCIL_CORE_X_IDS_WAKE_MASK); |
Jay Buddhabhatti | c6daff0 | 2022-09-05 02:56:32 -0700 | [diff] [blame] | 383 | |
Jay Buddhabhatti | c6d624b | 2023-03-02 02:47:36 -0800 | [diff] [blame] | 384 | pm_client_lock_release(); |
Jay Buddhabhatti | c6daff0 | 2022-09-05 02:56:32 -0700 | [diff] [blame] | 385 | } |
| 386 | |
| 387 | /** |
Prasad Kummari | 7d0623a | 2023-06-09 14:32:00 +0530 | [diff] [blame] | 388 | * pm_client_abort_suspend() - Client-specific abort-suspend actions. |
Jay Buddhabhatti | c6daff0 | 2022-09-05 02:56:32 -0700 | [diff] [blame] | 389 | * |
| 390 | * This function should contain any PU-specific actions |
Prasad Kummari | 7d0623a | 2023-06-09 14:32:00 +0530 | [diff] [blame] | 391 | * required for aborting a prior suspend request. |
| 392 | * |
Jay Buddhabhatti | c6daff0 | 2022-09-05 02:56:32 -0700 | [diff] [blame] | 393 | */ |
| 394 | void pm_client_abort_suspend(void) |
| 395 | { |
| 396 | uint32_t cpu_id = plat_my_core_pos(); |
| 397 | uintptr_t val; |
| 398 | |
| 399 | /* Enable interrupts at processor level (for current cpu) */ |
| 400 | gicv3_cpuif_enable(plat_my_core_pos()); |
| 401 | |
Jay Buddhabhatti | c6d624b | 2023-03-02 02:47:36 -0800 | [diff] [blame] | 402 | pm_client_lock_get(); |
Jay Buddhabhatti | c6daff0 | 2022-09-05 02:56:32 -0700 | [diff] [blame] | 403 | |
| 404 | /* Clear powerdown request */ |
| 405 | val = read_cpu_pwrctrl_val(); |
| 406 | val &= ~CORE_PWRDN_EN_BIT_MASK; |
| 407 | write_cpu_pwrctrl_val(val); |
| 408 | |
| 409 | isb(); |
| 410 | |
| 411 | /* Disabled power down interrupt */ |
| 412 | mmio_write_32(APU_PCIL_CORE_X_IDS_POWER_REG(cpu_id), |
| 413 | APU_PCIL_CORE_X_IDS_POWER_MASK); |
| 414 | |
Jay Buddhabhatti | c6d624b | 2023-03-02 02:47:36 -0800 | [diff] [blame] | 415 | pm_client_lock_release(); |
Jay Buddhabhatti | c6daff0 | 2022-09-05 02:56:32 -0700 | [diff] [blame] | 416 | } |