Tejas Patel | 354fe57 | 2018-12-14 00:55:37 -0800 | [diff] [blame] | 1 | /* |
Tanmay Shah | ff34daa | 2021-08-09 11:00:41 -0700 | [diff] [blame] | 2 | * Copyright (c) 2019-2022, Xilinx, Inc. All rights reserved. |
Tanmay Shah | fdae9e8 | 2022-08-26 15:06:00 -0700 | [diff] [blame] | 3 | * Copyright (c) 2022, Advanced Micro Devices, Inc. All rights reserved. |
Tejas Patel | 354fe57 | 2018-12-14 00:55:37 -0800 | [diff] [blame] | 4 | * |
| 5 | * SPDX-License-Identifier: BSD-3-Clause |
| 6 | */ |
| 7 | |
| 8 | /* |
| 9 | * Top-level SMC handler for Versal power management calls and |
| 10 | * IPI setup functions for communication with PMC. |
| 11 | */ |
| 12 | |
| 13 | #include <errno.h> |
| 14 | #include <plat_private.h> |
Tejas Patel | 59c608a | 2019-01-09 04:10:29 -0800 | [diff] [blame] | 15 | #include <stdbool.h> |
| 16 | #include <common/runtime_svc.h> |
Shubhrajyoti Datta | abf6122 | 2021-03-17 23:01:17 +0530 | [diff] [blame] | 17 | #include <plat/common/platform.h> |
Tejas Patel | 59c608a | 2019-01-09 04:10:29 -0800 | [diff] [blame] | 18 | #include "pm_api_sys.h" |
Tejas Patel | 354fe57 | 2018-12-14 00:55:37 -0800 | [diff] [blame] | 19 | #include "pm_client.h" |
| 20 | #include "pm_ipi.h" |
Venkatesh Yadav Abbarapu | aa4898a | 2021-03-31 03:07:40 -0600 | [diff] [blame] | 21 | #include <drivers/arm/gicv3.h> |
Tanmay Shah | fde084c | 2022-09-13 10:24:27 -0700 | [diff] [blame] | 22 | #include "../drivers/arm/gic/v3/gicv3_private.h" |
| 23 | |
| 24 | #define MODE 0x80000000U |
Venkatesh Yadav Abbarapu | aa4898a | 2021-03-31 03:07:40 -0600 | [diff] [blame] | 25 | |
| 26 | #define XSCUGIC_SGIR_EL1_INITID_SHIFT 24U |
Abhyuday Godhasara | edc38ae | 2021-08-04 23:58:46 -0700 | [diff] [blame] | 27 | #define INVALID_SGI 0xFFU |
Tanmay Shah | fdae9e8 | 2022-08-26 15:06:00 -0700 | [diff] [blame] | 28 | #define PM_INIT_SUSPEND_CB (30U) |
| 29 | #define PM_NOTIFY_CB (32U) |
Venkatesh Yadav Abbarapu | aa4898a | 2021-03-31 03:07:40 -0600 | [diff] [blame] | 30 | DEFINE_RENAME_SYSREG_RW_FUNCS(icc_asgi1r_el1, S3_0_C12_C11_6) |
Tejas Patel | 354fe57 | 2018-12-14 00:55:37 -0800 | [diff] [blame] | 31 | |
Tejas Patel | 59c608a | 2019-01-09 04:10:29 -0800 | [diff] [blame] | 32 | /* pm_up = true - UP, pm_up = false - DOWN */ |
| 33 | static bool pm_up; |
Venkatesh Yadav Abbarapu | bde8759 | 2022-05-24 11:11:12 +0530 | [diff] [blame] | 34 | static uint32_t sgi = (uint32_t)INVALID_SGI; |
Tejas Patel | 59c608a | 2019-01-09 04:10:29 -0800 | [diff] [blame] | 35 | |
Tanmay Shah | fdae9e8 | 2022-08-26 15:06:00 -0700 | [diff] [blame] | 36 | static void notify_os(void) |
| 37 | { |
| 38 | int32_t cpu; |
| 39 | uint32_t reg; |
| 40 | |
| 41 | cpu = plat_my_core_pos() + 1U; |
| 42 | |
| 43 | reg = (cpu | (sgi << XSCUGIC_SGIR_EL1_INITID_SHIFT)); |
| 44 | write_icc_asgi1r_el1(reg); |
| 45 | } |
| 46 | |
Shubhrajyoti Datta | abf6122 | 2021-03-17 23:01:17 +0530 | [diff] [blame] | 47 | static uint64_t ipi_fiq_handler(uint32_t id, uint32_t flags, void *handle, |
| 48 | void *cookie) |
| 49 | { |
Tanmay Shah | fdae9e8 | 2022-08-26 15:06:00 -0700 | [diff] [blame] | 50 | uint32_t payload[4] = {0}; |
| 51 | |
| 52 | VERBOSE("Received IPI FIQ from firmware\n"); |
Venkatesh Yadav Abbarapu | aa4898a | 2021-03-31 03:07:40 -0600 | [diff] [blame] | 53 | |
Shubhrajyoti Datta | abf6122 | 2021-03-17 23:01:17 +0530 | [diff] [blame] | 54 | (void)plat_ic_acknowledge_interrupt(); |
Venkatesh Yadav Abbarapu | aa4898a | 2021-03-31 03:07:40 -0600 | [diff] [blame] | 55 | |
Tanmay Shah | fdae9e8 | 2022-08-26 15:06:00 -0700 | [diff] [blame] | 56 | pm_get_callbackdata(payload, ARRAY_SIZE(payload), 0, 0); |
| 57 | switch (payload[0]) { |
| 58 | case PM_INIT_SUSPEND_CB: |
| 59 | case PM_NOTIFY_CB: |
| 60 | if (sgi != INVALID_SGI) { |
| 61 | notify_os(); |
| 62 | } |
| 63 | break; |
| 64 | default: |
| 65 | pm_ipi_irq_clear(primary_proc); |
| 66 | WARN("Invalid IPI payload\n"); |
| 67 | break; |
Venkatesh Yadav Abbarapu | aa4898a | 2021-03-31 03:07:40 -0600 | [diff] [blame] | 68 | } |
Shubhrajyoti Datta | abf6122 | 2021-03-17 23:01:17 +0530 | [diff] [blame] | 69 | |
| 70 | /* Clear FIQ */ |
| 71 | plat_ic_end_of_interrupt(id); |
| 72 | |
Venkatesh Yadav Abbarapu | aa4898a | 2021-03-31 03:07:40 -0600 | [diff] [blame] | 73 | return 0; |
| 74 | } |
| 75 | |
| 76 | /** |
| 77 | * pm_register_sgi() - PM register the IPI interrupt |
| 78 | * |
| 79 | * @sgi - SGI number to be used for communication. |
Venkatesh Yadav Abbarapu | c8bbedc | 2021-04-19 07:49:57 -0600 | [diff] [blame] | 80 | * @reset - Reset to invalid SGI when reset=1. |
Venkatesh Yadav Abbarapu | aa4898a | 2021-03-31 03:07:40 -0600 | [diff] [blame] | 81 | * @return On success, the initialization function must return 0. |
| 82 | * Any other return value will cause the framework to ignore |
| 83 | * the service |
| 84 | * |
| 85 | * Update the SGI number to be used. |
| 86 | * |
| 87 | */ |
Venkatesh Yadav Abbarapu | 2cefbcd | 2022-07-31 14:05:40 +0530 | [diff] [blame] | 88 | int32_t pm_register_sgi(uint32_t sgi_num, uint32_t reset) |
Venkatesh Yadav Abbarapu | aa4898a | 2021-03-31 03:07:40 -0600 | [diff] [blame] | 89 | { |
Venkatesh Yadav Abbarapu | c8bbedc | 2021-04-19 07:49:57 -0600 | [diff] [blame] | 90 | if (reset == 1U) { |
| 91 | sgi = INVALID_SGI; |
| 92 | return 0; |
| 93 | } |
| 94 | |
| 95 | if (sgi != INVALID_SGI) { |
Venkatesh Yadav Abbarapu | aa4898a | 2021-03-31 03:07:40 -0600 | [diff] [blame] | 96 | return -EBUSY; |
| 97 | } |
| 98 | |
| 99 | if (sgi_num >= GICV3_MAX_SGI_TARGETS) { |
| 100 | return -EINVAL; |
| 101 | } |
| 102 | |
Venkatesh Yadav Abbarapu | bde8759 | 2022-05-24 11:11:12 +0530 | [diff] [blame] | 103 | sgi = (uint32_t)sgi_num; |
Shubhrajyoti Datta | abf6122 | 2021-03-17 23:01:17 +0530 | [diff] [blame] | 104 | return 0; |
| 105 | } |
| 106 | |
Tejas Patel | 354fe57 | 2018-12-14 00:55:37 -0800 | [diff] [blame] | 107 | /** |
| 108 | * pm_setup() - PM service setup |
| 109 | * |
| 110 | * @return On success, the initialization function must return 0. |
| 111 | * Any other return value will cause the framework to ignore |
| 112 | * the service |
| 113 | * |
| 114 | * Initialization functions for Versal power management for |
| 115 | * communicaton with PMC. |
| 116 | * |
| 117 | * Called from sip_svc_setup initialization function with the |
| 118 | * rt_svc_init signature. |
| 119 | */ |
Venkatesh Yadav Abbarapu | 2cefbcd | 2022-07-31 14:05:40 +0530 | [diff] [blame] | 120 | int32_t pm_setup(void) |
Tejas Patel | 354fe57 | 2018-12-14 00:55:37 -0800 | [diff] [blame] | 121 | { |
Venkatesh Yadav Abbarapu | bde8759 | 2022-05-24 11:11:12 +0530 | [diff] [blame] | 122 | int32_t status, ret = 0; |
Tejas Patel | 354fe57 | 2018-12-14 00:55:37 -0800 | [diff] [blame] | 123 | |
| 124 | status = pm_ipi_init(primary_proc); |
| 125 | |
| 126 | if (status < 0) { |
| 127 | INFO("BL31: PM Service Init Failed, Error Code %d!\n", status); |
| 128 | ret = status; |
Tejas Patel | 59c608a | 2019-01-09 04:10:29 -0800 | [diff] [blame] | 129 | } else { |
| 130 | pm_up = true; |
Tejas Patel | 354fe57 | 2018-12-14 00:55:37 -0800 | [diff] [blame] | 131 | } |
| 132 | |
Shubhrajyoti Datta | abf6122 | 2021-03-17 23:01:17 +0530 | [diff] [blame] | 133 | /* |
| 134 | * Enable IPI IRQ |
| 135 | * assume the rich OS is OK to handle callback IRQs now. |
| 136 | * Even if we were wrong, it would not enable the IRQ in |
| 137 | * the GIC. |
| 138 | */ |
| 139 | pm_ipi_irq_enable(primary_proc); |
| 140 | |
| 141 | ret = request_intr_type_el3(PLAT_VERSAL_IPI_IRQ, ipi_fiq_handler); |
Abhyuday Godhasara | 4487794 | 2021-08-05 02:59:26 -0700 | [diff] [blame] | 142 | if (ret != 0) { |
Shubhrajyoti Datta | abf6122 | 2021-03-17 23:01:17 +0530 | [diff] [blame] | 143 | WARN("BL31: registering IPI interrupt failed\n"); |
| 144 | } |
Tanmay Shah | fde084c | 2022-09-13 10:24:27 -0700 | [diff] [blame] | 145 | |
| 146 | gicd_write_irouter(gicv3_driver_data->gicd_base, PLAT_VERSAL_IPI_IRQ, MODE); |
Tejas Patel | 354fe57 | 2018-12-14 00:55:37 -0800 | [diff] [blame] | 147 | return ret; |
| 148 | } |
Tejas Patel | 59c608a | 2019-01-09 04:10:29 -0800 | [diff] [blame] | 149 | |
| 150 | /** |
Tanmay Shah | ff34daa | 2021-08-09 11:00:41 -0700 | [diff] [blame] | 151 | * eemi_for_compatibility() - EEMI calls handler for deprecated calls |
Tejas Patel | 59c608a | 2019-01-09 04:10:29 -0800 | [diff] [blame] | 152 | * |
Tanmay Shah | ff34daa | 2021-08-09 11:00:41 -0700 | [diff] [blame] | 153 | * @return - If EEMI API found then, uintptr_t type address, else 0 |
Tejas Patel | 59c608a | 2019-01-09 04:10:29 -0800 | [diff] [blame] | 154 | * |
Tanmay Shah | ff34daa | 2021-08-09 11:00:41 -0700 | [diff] [blame] | 155 | * Some EEMI API's use case needs to be changed in Linux driver, so they |
| 156 | * can take advantage of common EEMI handler in TF-A. As of now the old |
| 157 | * implementation of these APIs are required to maintain backward compatibility |
| 158 | * until their use case in linux driver changes. |
Tejas Patel | 59c608a | 2019-01-09 04:10:29 -0800 | [diff] [blame] | 159 | */ |
Tanmay Shah | ff34daa | 2021-08-09 11:00:41 -0700 | [diff] [blame] | 160 | static uintptr_t eemi_for_compatibility(uint32_t api_id, uint32_t *pm_arg, |
| 161 | void *handle, uint32_t security_flag) |
Tejas Patel | 59c608a | 2019-01-09 04:10:29 -0800 | [diff] [blame] | 162 | { |
| 163 | enum pm_ret_status ret; |
| 164 | |
Tanmay Shah | ff34daa | 2021-08-09 11:00:41 -0700 | [diff] [blame] | 165 | switch (api_id) { |
Tejas Patel | 59c608a | 2019-01-09 04:10:29 -0800 | [diff] [blame] | 166 | |
Tejas Patel | 9141f44 | 2019-01-10 03:03:48 -0800 | [diff] [blame] | 167 | case PM_IOCTL: |
| 168 | { |
| 169 | uint32_t value; |
| 170 | |
| 171 | ret = pm_api_ioctl(pm_arg[0], pm_arg[1], pm_arg[2], |
Venkatesh Yadav Abbarapu | 4b23339 | 2021-10-20 22:11:53 -0600 | [diff] [blame] | 172 | pm_arg[3], pm_arg[4], |
| 173 | &value, security_flag); |
Tanmay Shah | ff34daa | 2021-08-09 11:00:41 -0700 | [diff] [blame] | 174 | if (ret == PM_RET_ERROR_NOTSUPPORTED) |
| 175 | return (uintptr_t)0; |
| 176 | |
Venkatesh Yadav Abbarapu | d90e47b | 2022-07-28 08:50:30 +0530 | [diff] [blame] | 177 | SMC_RET1(handle, (uint64_t)ret | ((uint64_t)value) << 32U); |
Tejas Patel | 9141f44 | 2019-01-10 03:03:48 -0800 | [diff] [blame] | 178 | } |
| 179 | |
Tejas Patel | a3e34ad | 2019-02-01 17:25:19 +0530 | [diff] [blame] | 180 | case PM_QUERY_DATA: |
| 181 | { |
Tanmay Shah | ff34daa | 2021-08-09 11:00:41 -0700 | [diff] [blame] | 182 | uint32_t data[PAYLOAD_ARG_CNT] = { 0 }; |
Tejas Patel | a3e34ad | 2019-02-01 17:25:19 +0530 | [diff] [blame] | 183 | |
| 184 | ret = pm_query_data(pm_arg[0], pm_arg[1], pm_arg[2], |
Michal Simek | 57cf55a | 2022-07-29 07:48:59 +0200 | [diff] [blame] | 185 | pm_arg[3], data, security_flag); |
Rajan Vaja | 030620d | 2020-11-23 04:13:54 -0800 | [diff] [blame] | 186 | |
Venkatesh Yadav Abbarapu | d90e47b | 2022-07-28 08:50:30 +0530 | [diff] [blame] | 187 | SMC_RET2(handle, (uint64_t)ret | ((uint64_t)data[0] << 32U), |
Michal Simek | 57cf55a | 2022-07-29 07:48:59 +0200 | [diff] [blame] | 188 | (uint64_t)data[1] | ((uint64_t)data[2] << 32U)); |
Rajan Vaja | 030620d | 2020-11-23 04:13:54 -0800 | [diff] [blame] | 189 | } |
Tejas Patel | 59c608a | 2019-01-09 04:10:29 -0800 | [diff] [blame] | 190 | |
Tanmay Shah | ff34daa | 2021-08-09 11:00:41 -0700 | [diff] [blame] | 191 | case PM_FEATURE_CHECK: |
Tejas Patel | 59c608a | 2019-01-09 04:10:29 -0800 | [diff] [blame] | 192 | { |
Ronak Jain | 70d1c58 | 2022-02-04 00:42:55 -0800 | [diff] [blame] | 193 | uint32_t result[PAYLOAD_ARG_CNT] = {0U}; |
Tejas Patel | 59c608a | 2019-01-09 04:10:29 -0800 | [diff] [blame] | 194 | |
Ronak Jain | 70d1c58 | 2022-02-04 00:42:55 -0800 | [diff] [blame] | 195 | ret = pm_feature_check(pm_arg[0], result, security_flag); |
Venkatesh Yadav Abbarapu | a0657d9 | 2022-07-20 09:03:22 +0530 | [diff] [blame] | 196 | SMC_RET2(handle, (uint64_t)ret | ((uint64_t)result[0] << 32U), |
| 197 | (uint64_t)result[1] | ((uint64_t)result[2] << 32U)); |
Tejas Patel | 59c608a | 2019-01-09 04:10:29 -0800 | [diff] [blame] | 198 | } |
| 199 | |
Tanmay Shah | ff34daa | 2021-08-09 11:00:41 -0700 | [diff] [blame] | 200 | case PM_LOAD_PDI: |
Tejas Patel | 59c608a | 2019-01-09 04:10:29 -0800 | [diff] [blame] | 201 | { |
Tanmay Shah | ff34daa | 2021-08-09 11:00:41 -0700 | [diff] [blame] | 202 | ret = pm_load_pdi(pm_arg[0], pm_arg[1], pm_arg[2], |
| 203 | security_flag); |
| 204 | SMC_RET1(handle, (uint64_t)ret); |
| 205 | } |
Tejas Patel | 59c608a | 2019-01-09 04:10:29 -0800 | [diff] [blame] | 206 | |
Tanmay Shah | ff34daa | 2021-08-09 11:00:41 -0700 | [diff] [blame] | 207 | default: |
| 208 | return (uintptr_t)0; |
Tejas Patel | 59c608a | 2019-01-09 04:10:29 -0800 | [diff] [blame] | 209 | } |
Tanmay Shah | ff34daa | 2021-08-09 11:00:41 -0700 | [diff] [blame] | 210 | } |
Tejas Patel | 59c608a | 2019-01-09 04:10:29 -0800 | [diff] [blame] | 211 | |
Tanmay Shah | ff34daa | 2021-08-09 11:00:41 -0700 | [diff] [blame] | 212 | /** |
| 213 | * eemi_psci_debugfs_handler() - EEMI API invoked from PSCI |
| 214 | * |
| 215 | * These EEMI APIs performs CPU specific power management tasks. |
| 216 | * These EEMI APIs are invoked either from PSCI or from debugfs in kernel. |
| 217 | * These calls require CPU specific processing before sending IPI request to |
| 218 | * Platform Management Controller. For example enable/disable CPU specific |
| 219 | * interrupts. This requires separate handler for these calls and may not be |
| 220 | * handled using common eemi handler |
| 221 | */ |
| 222 | static uintptr_t eemi_psci_debugfs_handler(uint32_t api_id, uint32_t *pm_arg, |
| 223 | void *handle, uint32_t security_flag) |
| 224 | { |
| 225 | enum pm_ret_status ret; |
Tejas Patel | 59c608a | 2019-01-09 04:10:29 -0800 | [diff] [blame] | 226 | |
Tanmay Shah | ff34daa | 2021-08-09 11:00:41 -0700 | [diff] [blame] | 227 | switch (api_id) { |
Tejas Patel | 59c608a | 2019-01-09 04:10:29 -0800 | [diff] [blame] | 228 | |
Tanmay Shah | ff34daa | 2021-08-09 11:00:41 -0700 | [diff] [blame] | 229 | case PM_SELF_SUSPEND: |
| 230 | ret = pm_self_suspend(pm_arg[0], pm_arg[1], pm_arg[2], |
| 231 | pm_arg[3], security_flag); |
Venkatesh Yadav Abbarapu | d90e47b | 2022-07-28 08:50:30 +0530 | [diff] [blame] | 232 | SMC_RET1(handle, (u_register_t)ret); |
Tejas Patel | 59c608a | 2019-01-09 04:10:29 -0800 | [diff] [blame] | 233 | |
Tanmay Shah | ff34daa | 2021-08-09 11:00:41 -0700 | [diff] [blame] | 234 | case PM_FORCE_POWERDOWN: |
| 235 | ret = pm_force_powerdown(pm_arg[0], pm_arg[1], security_flag); |
Venkatesh Yadav Abbarapu | d90e47b | 2022-07-28 08:50:30 +0530 | [diff] [blame] | 236 | SMC_RET1(handle, (u_register_t)ret); |
Tejas Patel | 84275bf | 2020-09-01 04:43:53 -0700 | [diff] [blame] | 237 | |
Tanmay Shah | ff34daa | 2021-08-09 11:00:41 -0700 | [diff] [blame] | 238 | case PM_REQ_SUSPEND: |
| 239 | ret = pm_req_suspend(pm_arg[0], pm_arg[1], pm_arg[2], |
| 240 | pm_arg[3], security_flag); |
Venkatesh Yadav Abbarapu | d90e47b | 2022-07-28 08:50:30 +0530 | [diff] [blame] | 241 | SMC_RET1(handle, (u_register_t)ret); |
Tejas Patel | 84275bf | 2020-09-01 04:43:53 -0700 | [diff] [blame] | 242 | |
Tanmay Shah | ff34daa | 2021-08-09 11:00:41 -0700 | [diff] [blame] | 243 | case PM_ABORT_SUSPEND: |
| 244 | ret = pm_abort_suspend(pm_arg[0], security_flag); |
Venkatesh Yadav Abbarapu | d90e47b | 2022-07-28 08:50:30 +0530 | [diff] [blame] | 245 | SMC_RET1(handle, (u_register_t)ret); |
Tejas Patel | 59c608a | 2019-01-09 04:10:29 -0800 | [diff] [blame] | 246 | |
Tanmay Shah | ff34daa | 2021-08-09 11:00:41 -0700 | [diff] [blame] | 247 | case PM_SYSTEM_SHUTDOWN: |
| 248 | ret = pm_system_shutdown(pm_arg[0], pm_arg[1], security_flag); |
Venkatesh Yadav Abbarapu | d90e47b | 2022-07-28 08:50:30 +0530 | [diff] [blame] | 249 | SMC_RET1(handle, (u_register_t)ret); |
Tejas Patel | 59c608a | 2019-01-09 04:10:29 -0800 | [diff] [blame] | 250 | |
Tanmay Shah | ff34daa | 2021-08-09 11:00:41 -0700 | [diff] [blame] | 251 | default: |
| 252 | return (uintptr_t)0; |
Tejas Patel | 59c608a | 2019-01-09 04:10:29 -0800 | [diff] [blame] | 253 | } |
Tanmay Shah | ff34daa | 2021-08-09 11:00:41 -0700 | [diff] [blame] | 254 | } |
Tejas Patel | 59c608a | 2019-01-09 04:10:29 -0800 | [diff] [blame] | 255 | |
Tanmay Shah | ff34daa | 2021-08-09 11:00:41 -0700 | [diff] [blame] | 256 | /** |
| 257 | * TF_A_specific_handler() - SMC handler for TF-A specific functionality |
| 258 | * |
| 259 | * These EEMI calls performs functionality that does not require |
| 260 | * IPI transaction. The handler ends in TF-A and returns requested data to |
Michal Simek | 509bfc7 | 2022-09-14 09:32:47 +0200 | [diff] [blame] | 261 | * kernel from TF-A. |
Tanmay Shah | ff34daa | 2021-08-09 11:00:41 -0700 | [diff] [blame] | 262 | */ |
| 263 | static uintptr_t TF_A_specific_handler(uint32_t api_id, uint32_t *pm_arg, |
| 264 | void *handle, uint32_t security_flag) |
| 265 | { |
| 266 | switch (api_id) { |
Tejas Patel | 59c608a | 2019-01-09 04:10:29 -0800 | [diff] [blame] | 267 | |
Tanmay Shah | 0dde16c | 2021-12-14 04:53:40 -0800 | [diff] [blame] | 268 | case TF_A_PM_REGISTER_SGI: |
| 269 | { |
Venkatesh Yadav Abbarapu | bde8759 | 2022-05-24 11:11:12 +0530 | [diff] [blame] | 270 | int32_t ret; |
Tanmay Shah | 0dde16c | 2021-12-14 04:53:40 -0800 | [diff] [blame] | 271 | |
| 272 | ret = pm_register_sgi(pm_arg[0], pm_arg[1]); |
| 273 | if (ret != 0) { |
| 274 | SMC_RET1(handle, (uint32_t)PM_RET_ERROR_ARGS); |
| 275 | } |
| 276 | |
| 277 | SMC_RET1(handle, (uint32_t)PM_RET_SUCCESS); |
| 278 | } |
| 279 | |
Tanmay Shah | ff34daa | 2021-08-09 11:00:41 -0700 | [diff] [blame] | 280 | case PM_GET_CALLBACK_DATA: |
Tejas Patel | 59c608a | 2019-01-09 04:10:29 -0800 | [diff] [blame] | 281 | { |
Tanmay Shah | ff34daa | 2021-08-09 11:00:41 -0700 | [diff] [blame] | 282 | uint32_t result[4] = {0}; |
Tejas Patel | 59c608a | 2019-01-09 04:10:29 -0800 | [diff] [blame] | 283 | |
Tanmay Shah | fdae9e8 | 2022-08-26 15:06:00 -0700 | [diff] [blame] | 284 | pm_get_callbackdata(result, ARRAY_SIZE(result), security_flag, 1U); |
Tanmay Shah | ff34daa | 2021-08-09 11:00:41 -0700 | [diff] [blame] | 285 | SMC_RET2(handle, |
Venkatesh Yadav Abbarapu | a0657d9 | 2022-07-20 09:03:22 +0530 | [diff] [blame] | 286 | (uint64_t)result[0] | ((uint64_t)result[1] << 32U), |
| 287 | (uint64_t)result[2] | ((uint64_t)result[3] << 32U)); |
Tejas Patel | 59c608a | 2019-01-09 04:10:29 -0800 | [diff] [blame] | 288 | } |
| 289 | |
Tejas Patel | 044001d | 2019-01-21 17:56:48 +0530 | [diff] [blame] | 290 | case PM_GET_TRUSTZONE_VERSION: |
| 291 | SMC_RET1(handle, (uint64_t)PM_RET_SUCCESS | |
Venkatesh Yadav Abbarapu | a0657d9 | 2022-07-20 09:03:22 +0530 | [diff] [blame] | 292 | ((uint64_t)VERSAL_TZ_VERSION << 32U)); |
Tejas Patel | 044001d | 2019-01-21 17:56:48 +0530 | [diff] [blame] | 293 | |
Tanmay Shah | ff34daa | 2021-08-09 11:00:41 -0700 | [diff] [blame] | 294 | default: |
| 295 | return (uintptr_t)0; |
Ravi Patel | bd4aa5a | 2019-08-12 03:17:54 -0700 | [diff] [blame] | 296 | } |
Tanmay Shah | ff34daa | 2021-08-09 11:00:41 -0700 | [diff] [blame] | 297 | } |
Ravi Patel | bd4aa5a | 2019-08-12 03:17:54 -0700 | [diff] [blame] | 298 | |
Tanmay Shah | ff34daa | 2021-08-09 11:00:41 -0700 | [diff] [blame] | 299 | /** |
| 300 | * eemi_handler() - Prepare EEMI payload and perform IPI transaction |
| 301 | * |
| 302 | * EEMI - Embedded Energy Management Interface is Xilinx proprietary protocol |
| 303 | * to allow communication between power management controller and different |
| 304 | * processing clusters. |
| 305 | * |
| 306 | * This handler prepares EEMI protocol payload received from kernel and performs |
| 307 | * IPI transaction. |
| 308 | */ |
| 309 | static uintptr_t eemi_handler(uint32_t api_id, uint32_t *pm_arg, |
| 310 | void *handle, uint32_t security_flag) |
| 311 | { |
| 312 | enum pm_ret_status ret; |
| 313 | uint32_t buf[PAYLOAD_ARG_CNT] = {0}; |
Ravi Patel | 22b0b49 | 2019-03-06 12:34:46 +0530 | [diff] [blame] | 314 | |
Tanmay Shah | ff34daa | 2021-08-09 11:00:41 -0700 | [diff] [blame] | 315 | ret = pm_handle_eemi_call(security_flag, api_id, pm_arg[0], pm_arg[1], |
| 316 | pm_arg[2], pm_arg[3], pm_arg[4], |
| 317 | (uint64_t *)buf); |
| 318 | /* |
| 319 | * Two IOCTLs, to get clock name and pinctrl name of pm_query_data API |
| 320 | * receives 5 words of respoonse from firmware. Currently linux driver can |
| 321 | * receive only 4 words from TF-A. So, this needs to be handled separately |
| 322 | * than other eemi calls. |
| 323 | */ |
| 324 | if (api_id == PM_QUERY_DATA) { |
| 325 | if ((pm_arg[0] == XPM_QID_CLOCK_GET_NAME || |
| 326 | pm_arg[0] == XPM_QID_PINCTRL_GET_FUNCTION_NAME) && |
| 327 | ret == PM_RET_SUCCESS) { |
Venkatesh Yadav Abbarapu | 2d27cb9 | 2022-07-31 14:08:53 +0530 | [diff] [blame] | 328 | SMC_RET2(handle, (uint64_t)buf[0] | ((uint64_t)buf[1] << 32U), |
| 329 | (uint64_t)buf[2] | ((uint64_t)buf[3] << 32U)); |
Tanmay Shah | ff34daa | 2021-08-09 11:00:41 -0700 | [diff] [blame] | 330 | } |
Ravi Patel | 22b0b49 | 2019-03-06 12:34:46 +0530 | [diff] [blame] | 331 | } |
| 332 | |
Venkatesh Yadav Abbarapu | 2d27cb9 | 2022-07-31 14:08:53 +0530 | [diff] [blame] | 333 | SMC_RET2(handle, (uint64_t)ret | ((uint64_t)buf[0] << 32U), |
| 334 | (uint64_t)buf[1] | ((uint64_t)buf[2] << 32U)); |
Tanmay Shah | ff34daa | 2021-08-09 11:00:41 -0700 | [diff] [blame] | 335 | } |
Jolly Shah | ed05a71 | 2019-03-22 05:33:39 +0530 | [diff] [blame] | 336 | |
Tanmay Shah | ff34daa | 2021-08-09 11:00:41 -0700 | [diff] [blame] | 337 | /** |
| 338 | * pm_smc_handler() - SMC handler for PM-API calls coming from EL1/EL2. |
| 339 | * @smc_fid - Function Identifier |
| 340 | * @x1 - x4 - SMC64 Arguments from kernel |
Venkatesh Yadav Abbarapu | 4b23339 | 2021-10-20 22:11:53 -0600 | [diff] [blame] | 341 | * x3 (upper 32-bits) and x4 are Unused |
Tanmay Shah | ff34daa | 2021-08-09 11:00:41 -0700 | [diff] [blame] | 342 | * @cookie - Unused |
| 343 | * @handler - Pointer to caller's context structure |
| 344 | * |
| 345 | * @return - Unused |
| 346 | * |
| 347 | * Determines that smc_fid is valid and supported PM SMC Function ID from the |
| 348 | * list of pm_api_ids, otherwise completes the request with |
| 349 | * the unknown SMC Function ID |
| 350 | * |
| 351 | * The SMC calls for PM service are forwarded from SIP Service SMC handler |
| 352 | * function with rt_svc_handle signature |
| 353 | */ |
| 354 | uint64_t pm_smc_handler(uint32_t smc_fid, uint64_t x1, uint64_t x2, uint64_t x3, |
Venkatesh Yadav Abbarapu | d3c0eb4 | 2022-05-24 14:02:52 +0530 | [diff] [blame] | 355 | uint64_t x4, const void *cookie, void *handle, uint64_t flags) |
Tanmay Shah | ff34daa | 2021-08-09 11:00:41 -0700 | [diff] [blame] | 356 | { |
| 357 | uintptr_t ret; |
| 358 | uint32_t pm_arg[PAYLOAD_ARG_CNT] = {0}; |
| 359 | uint32_t security_flag = SECURE_FLAG; |
| 360 | uint32_t api_id; |
Saeed Nowshadi | 2294b42 | 2019-06-03 10:22:35 -0700 | [diff] [blame] | 361 | |
Tanmay Shah | ff34daa | 2021-08-09 11:00:41 -0700 | [diff] [blame] | 362 | /* Handle case where PM wasn't initialized properly */ |
Michal Simek | 5e2f596 | 2022-09-13 11:48:53 +0200 | [diff] [blame] | 363 | if (pm_up == false) { |
Tanmay Shah | ff34daa | 2021-08-09 11:00:41 -0700 | [diff] [blame] | 364 | SMC_RET1(handle, SMC_UNK); |
Venkatesh Yadav Abbarapu | ab16713 | 2022-05-25 15:18:24 +0530 | [diff] [blame] | 365 | } |
Saeed Nowshadi | 2294b42 | 2019-06-03 10:22:35 -0700 | [diff] [blame] | 366 | |
Tanmay Shah | ff34daa | 2021-08-09 11:00:41 -0700 | [diff] [blame] | 367 | /* |
| 368 | * Mark BIT24 payload (i.e 1st bit of pm_arg[3] ) as non-secure (1) |
| 369 | * if smc called is non secure |
| 370 | */ |
Michal Simek | 5e2f596 | 2022-09-13 11:48:53 +0200 | [diff] [blame] | 371 | if (is_caller_non_secure(flags) != 0) { |
Tanmay Shah | ff34daa | 2021-08-09 11:00:41 -0700 | [diff] [blame] | 372 | security_flag = NON_SECURE_FLAG; |
Tejas Patel | 5c154e1 | 2020-11-25 01:53:12 -0800 | [diff] [blame] | 373 | } |
| 374 | |
Tanmay Shah | ff34daa | 2021-08-09 11:00:41 -0700 | [diff] [blame] | 375 | pm_arg[0] = (uint32_t)x1; |
Venkatesh Yadav Abbarapu | 2d27cb9 | 2022-07-31 14:08:53 +0530 | [diff] [blame] | 376 | pm_arg[1] = (uint32_t)(x1 >> 32U); |
Tanmay Shah | ff34daa | 2021-08-09 11:00:41 -0700 | [diff] [blame] | 377 | pm_arg[2] = (uint32_t)x2; |
Venkatesh Yadav Abbarapu | 2d27cb9 | 2022-07-31 14:08:53 +0530 | [diff] [blame] | 378 | pm_arg[3] = (uint32_t)(x2 >> 32U); |
Venkatesh Yadav Abbarapu | 4b23339 | 2021-10-20 22:11:53 -0600 | [diff] [blame] | 379 | pm_arg[4] = (uint32_t)x3; |
Tanmay Shah | ff34daa | 2021-08-09 11:00:41 -0700 | [diff] [blame] | 380 | (void)(x4); |
| 381 | api_id = smc_fid & FUNCID_NUM_MASK; |
Tejas Patel | 4201555 | 2020-11-25 01:56:57 -0800 | [diff] [blame] | 382 | |
Tanmay Shah | ff34daa | 2021-08-09 11:00:41 -0700 | [diff] [blame] | 383 | ret = eemi_for_compatibility(api_id, pm_arg, handle, security_flag); |
Venkatesh Yadav Abbarapu | ab16713 | 2022-05-25 15:18:24 +0530 | [diff] [blame] | 384 | if (ret != (uintptr_t)0) { |
Tanmay Shah | ff34daa | 2021-08-09 11:00:41 -0700 | [diff] [blame] | 385 | return ret; |
Venkatesh Yadav Abbarapu | ab16713 | 2022-05-25 15:18:24 +0530 | [diff] [blame] | 386 | } |
Tanmay Shah | ff34daa | 2021-08-09 11:00:41 -0700 | [diff] [blame] | 387 | |
| 388 | ret = eemi_psci_debugfs_handler(api_id, pm_arg, handle, flags); |
Venkatesh Yadav Abbarapu | ab16713 | 2022-05-25 15:18:24 +0530 | [diff] [blame] | 389 | if (ret != (uintptr_t)0) { |
Tanmay Shah | ff34daa | 2021-08-09 11:00:41 -0700 | [diff] [blame] | 390 | return ret; |
Venkatesh Yadav Abbarapu | ab16713 | 2022-05-25 15:18:24 +0530 | [diff] [blame] | 391 | } |
Tanmay Shah | ff34daa | 2021-08-09 11:00:41 -0700 | [diff] [blame] | 392 | |
| 393 | ret = TF_A_specific_handler(api_id, pm_arg, handle, security_flag); |
Venkatesh Yadav Abbarapu | ab16713 | 2022-05-25 15:18:24 +0530 | [diff] [blame] | 394 | if (ret != (uintptr_t)0) { |
Tanmay Shah | ff34daa | 2021-08-09 11:00:41 -0700 | [diff] [blame] | 395 | return ret; |
Venkatesh Yadav Abbarapu | ab16713 | 2022-05-25 15:18:24 +0530 | [diff] [blame] | 396 | } |
Tanmay Shah | ff34daa | 2021-08-09 11:00:41 -0700 | [diff] [blame] | 397 | |
| 398 | ret = eemi_handler(api_id, pm_arg, handle, security_flag); |
| 399 | |
| 400 | return ret; |
Tejas Patel | 59c608a | 2019-01-09 04:10:29 -0800 | [diff] [blame] | 401 | } |