1 /* 2 * Copyright (c) 2019-2022, Xilinx, Inc. All rights reserved. 3 * Copyright (c) 2022-2025, Advanced Micro Devices, Inc. All rights reserved. 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> 19 #include <lib/utils.h> 20 #include <plat/common/platform.h> 21 22 #include <plat_ipi.h> 23 #include <platform_def.h> 24 #include "pm_api_sys.h" 25 #include "pm_client.h" 26 #include "pm_defs.h" 27 #include <versal_def.h> 28 29 #define UNDEFINED_CPUID (~0U) 30 31 static DEFINE_BAKERY_LOCK(pm_client_secure_lock); 32 33 static const struct pm_ipi apu_ipi = { 34 .local_ipi_id = IPI_LOCAL_ID, 35 .remote_ipi_id = IPI_REMOTE_ID, 36 .buffer_base = IPI_BUFFER_LOCAL_BASE, 37 }; 38 39 /* Order in pm_procs_all array must match cpu ids */ 40 static const struct pm_proc pm_procs_all[] = { 41 { 42 .node_id = XPM_DEVID_ACPU_0, 43 .ipi = &apu_ipi, 44 .pwrdn_mask = APU_0_PWRCTL_CPUPWRDWNREQ_MASK, 45 }, 46 { 47 .node_id = XPM_DEVID_ACPU_1, 48 .ipi = &apu_ipi, 49 .pwrdn_mask = APU_1_PWRCTL_CPUPWRDWNREQ_MASK, 50 } 51 }; 52 53 const struct pm_proc *primary_proc = &pm_procs_all[0]; 54 55 /** 56 * irq_to_pm_node_idx - Get PM node index corresponding to the interrupt number. 57 * @irq: Interrupt number 58 * 59 * Return: PM node index corresponding to the specified interrupt. 60 * 61 */ 62 enum pm_device_node_idx irq_to_pm_node_idx(uint32_t irq) 63 { 64 enum pm_device_node_idx dev_idx = XPM_NODEIDX_DEV_MIN; 65 66 assert(irq <= IRQ_MAX); 67 68 switch (irq) { 69 case 13: 70 dev_idx = XPM_NODEIDX_DEV_GPIO; 71 break; 72 case 14: 73 dev_idx = XPM_NODEIDX_DEV_I2C_0; 74 break; 75 case 15: 76 dev_idx = XPM_NODEIDX_DEV_I2C_1; 77 break; 78 case 16: 79 dev_idx = XPM_NODEIDX_DEV_SPI_0; 80 break; 81 case 17: 82 dev_idx = XPM_NODEIDX_DEV_SPI_1; 83 break; 84 case 18: 85 dev_idx = XPM_NODEIDX_DEV_UART_0; 86 break; 87 case 19: 88 dev_idx = XPM_NODEIDX_DEV_UART_1; 89 break; 90 case 20: 91 dev_idx = XPM_NODEIDX_DEV_CAN_FD_0; 92 break; 93 case 21: 94 dev_idx = XPM_NODEIDX_DEV_CAN_FD_1; 95 break; 96 case 22: 97 case 23: 98 case 24: 99 case 25: 100 case 26: 101 dev_idx = XPM_NODEIDX_DEV_USB_0; 102 break; 103 case 37: 104 case 38: 105 case 39: 106 dev_idx = XPM_NODEIDX_DEV_TTC_0; 107 break; 108 case 40: 109 case 41: 110 case 42: 111 dev_idx = XPM_NODEIDX_DEV_TTC_1; 112 break; 113 case 43: 114 case 44: 115 case 45: 116 dev_idx = XPM_NODEIDX_DEV_TTC_2; 117 break; 118 case 46: 119 case 47: 120 case 48: 121 dev_idx = XPM_NODEIDX_DEV_TTC_3; 122 break; 123 case 56: 124 case 57: 125 dev_idx = XPM_NODEIDX_DEV_GEM_0; 126 break; 127 case 58: 128 case 59: 129 dev_idx = XPM_NODEIDX_DEV_GEM_1; 130 break; 131 case 60: 132 dev_idx = XPM_NODEIDX_DEV_ADMA_0; 133 break; 134 case 61: 135 dev_idx = XPM_NODEIDX_DEV_ADMA_1; 136 break; 137 case 62: 138 dev_idx = XPM_NODEIDX_DEV_ADMA_2; 139 break; 140 case 63: 141 dev_idx = XPM_NODEIDX_DEV_ADMA_3; 142 break; 143 case 64: 144 dev_idx = XPM_NODEIDX_DEV_ADMA_4; 145 break; 146 case 65: 147 dev_idx = XPM_NODEIDX_DEV_ADMA_5; 148 break; 149 case 66: 150 dev_idx = XPM_NODEIDX_DEV_ADMA_6; 151 break; 152 case 67: 153 dev_idx = XPM_NODEIDX_DEV_ADMA_7; 154 break; 155 case 74: 156 dev_idx = XPM_NODEIDX_DEV_USB_0; 157 break; 158 case 122: 159 dev_idx = XPM_NODEIDX_DEV_GPIO_PMC; 160 break; 161 case 126: 162 case 127: 163 dev_idx = XPM_NODEIDX_DEV_SDIO_0; 164 break; 165 case 128: 166 case 129: 167 dev_idx = XPM_NODEIDX_DEV_SDIO_1; 168 break; 169 case 142: 170 dev_idx = XPM_NODEIDX_DEV_RTC; 171 break; 172 default: 173 dev_idx = XPM_NODEIDX_DEV_MIN; 174 break; 175 } 176 177 return dev_idx; 178 } 179 180 /** 181 * pm_client_suspend() - Client-specific suspend actions. 182 * @proc: processor which need to suspend. 183 * @state: desired suspend state. 184 * @flag: 0 - Call from secure source. 185 * 1 - Call from non-secure source. 186 * 187 * This function should contain any PU-specific actions 188 * required prior to sending suspend request to PMU 189 * Actions taken depend on the state system is suspending to. 190 * 191 */ 192 void pm_client_suspend(const struct pm_proc *proc, uint32_t state, uint32_t flag) 193 { 194 bakery_lock_get(&pm_client_secure_lock); 195 196 if (state == PM_STATE_SUSPEND_TO_RAM) { 197 pm_client_set_wakeup_sources((uint32_t)proc->node_id, flag); 198 } 199 200 /* Set powerdown request */ 201 mmio_write_32(FPD_APU_PWRCTL, mmio_read_32(FPD_APU_PWRCTL) | 202 (uint32_t)proc->pwrdn_mask); 203 204 bakery_lock_release(&pm_client_secure_lock); 205 } 206 207 /** 208 * pm_get_cpuid() - get the local cpu ID for a global node ID. 209 * @nid: node id of the processor. 210 * 211 * Return: the cpu ID (starting from 0) for the subsystem. 212 * 213 */ 214 static uint32_t pm_get_cpuid(uint32_t nid) 215 { 216 uint32_t ret = UNDEFINED_CPUID; 217 uint32_t i; 218 219 for (i = 0U; i < ARRAY_SIZE(pm_procs_all); i++) { 220 if (pm_procs_all[i].node_id == nid) { 221 ret = i; 222 break; 223 } 224 } 225 return ret; 226 } 227 228 /** 229 * pm_client_wakeup() - Client-specific wakeup actions. 230 * @proc: Processor which need to wakeup. 231 * 232 * This function should contain any PU-specific actions 233 * required for waking up another APU core. 234 * 235 */ 236 void pm_client_wakeup(const struct pm_proc *proc) 237 { 238 uint32_t cpuid = pm_get_cpuid(proc->node_id); 239 240 if (cpuid == UNDEFINED_CPUID) { 241 return; 242 } 243 244 bakery_lock_get(&pm_client_secure_lock); 245 246 /* clear powerdown bit for affected cpu */ 247 uint32_t val = mmio_read_32(FPD_APU_PWRCTL); 248 val &= ~(proc->pwrdn_mask); 249 mmio_write_32(FPD_APU_PWRCTL, val); 250 251 bakery_lock_release(&pm_client_secure_lock); 252 } 253 254 /** 255 * pm_get_proc() - returns pointer to the proc structure. 256 * @cpuid: id of the cpu whose proc struct pointer should be returned. 257 * 258 * Return: pointer to a proc structure if proc is found, otherwise NULL. 259 * 260 */ 261 const struct pm_proc *pm_get_proc(uint32_t cpuid) 262 { 263 if (cpuid < ARRAY_SIZE(pm_procs_all)) { 264 return &pm_procs_all[cpuid]; 265 } 266 267 return NULL; 268 } 269