Tejas Patel | 354fe57 | 2018-12-14 00:55:37 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2019, Xilinx, Inc. All rights reserved. |
| 3 | * |
| 4 | * SPDX-License-Identifier: BSD-3-Clause |
| 5 | */ |
| 6 | |
| 7 | /* |
| 8 | * Top-level SMC handler for Versal power management calls and |
| 9 | * IPI setup functions for communication with PMC. |
| 10 | */ |
| 11 | |
| 12 | #include <errno.h> |
| 13 | #include <plat_private.h> |
Tejas Patel | 59c608a | 2019-01-09 04:10:29 -0800 | [diff] [blame] | 14 | #include <stdbool.h> |
| 15 | #include <common/runtime_svc.h> |
| 16 | #include "pm_api_sys.h" |
Tejas Patel | 354fe57 | 2018-12-14 00:55:37 -0800 | [diff] [blame] | 17 | #include "pm_client.h" |
| 18 | #include "pm_ipi.h" |
| 19 | |
Tejas Patel | 59c608a | 2019-01-09 04:10:29 -0800 | [diff] [blame] | 20 | /* pm_up = true - UP, pm_up = false - DOWN */ |
| 21 | static bool pm_up; |
| 22 | |
Tejas Patel | 354fe57 | 2018-12-14 00:55:37 -0800 | [diff] [blame] | 23 | /** |
| 24 | * pm_setup() - PM service setup |
| 25 | * |
| 26 | * @return On success, the initialization function must return 0. |
| 27 | * Any other return value will cause the framework to ignore |
| 28 | * the service |
| 29 | * |
| 30 | * Initialization functions for Versal power management for |
| 31 | * communicaton with PMC. |
| 32 | * |
| 33 | * Called from sip_svc_setup initialization function with the |
| 34 | * rt_svc_init signature. |
| 35 | */ |
| 36 | int pm_setup(void) |
| 37 | { |
| 38 | int status, ret = 0; |
| 39 | |
| 40 | status = pm_ipi_init(primary_proc); |
| 41 | |
| 42 | if (status < 0) { |
| 43 | INFO("BL31: PM Service Init Failed, Error Code %d!\n", status); |
| 44 | ret = status; |
Tejas Patel | 59c608a | 2019-01-09 04:10:29 -0800 | [diff] [blame] | 45 | } else { |
| 46 | pm_up = true; |
Tejas Patel | 354fe57 | 2018-12-14 00:55:37 -0800 | [diff] [blame] | 47 | } |
| 48 | |
| 49 | return ret; |
| 50 | } |
Tejas Patel | 59c608a | 2019-01-09 04:10:29 -0800 | [diff] [blame] | 51 | |
| 52 | /** |
| 53 | * pm_smc_handler() - SMC handler for PM-API calls coming from EL1/EL2. |
| 54 | * @smc_fid - Function Identifier |
| 55 | * @x1 - x4 - Arguments |
| 56 | * @cookie - Unused |
| 57 | * @handler - Pointer to caller's context structure |
| 58 | * |
| 59 | * @return - Unused |
| 60 | * |
| 61 | * Determines that smc_fid is valid and supported PM SMC Function ID from the |
| 62 | * list of pm_api_ids, otherwise completes the request with |
| 63 | * the unknown SMC Function ID |
| 64 | * |
| 65 | * The SMC calls for PM service are forwarded from SIP Service SMC handler |
| 66 | * function with rt_svc_handle signature |
| 67 | */ |
| 68 | uint64_t pm_smc_handler(uint32_t smc_fid, uint64_t x1, uint64_t x2, uint64_t x3, |
| 69 | uint64_t x4, void *cookie, void *handle, uint64_t flags) |
| 70 | { |
| 71 | enum pm_ret_status ret; |
| 72 | |
| 73 | uint32_t pm_arg[4]; |
| 74 | |
| 75 | /* Handle case where PM wasn't initialized properly */ |
| 76 | if (!pm_up) |
| 77 | SMC_RET1(handle, SMC_UNK); |
| 78 | |
| 79 | pm_arg[0] = (uint32_t)x1; |
| 80 | pm_arg[1] = (uint32_t)(x1 >> 32); |
| 81 | pm_arg[2] = (uint32_t)x2; |
| 82 | pm_arg[3] = (uint32_t)(x2 >> 32); |
| 83 | |
| 84 | switch (smc_fid & FUNCID_NUM_MASK) { |
| 85 | /* PM API Functions */ |
| 86 | case PM_SELF_SUSPEND: |
| 87 | ret = pm_self_suspend(pm_arg[0], pm_arg[1], pm_arg[2], |
| 88 | pm_arg[3]); |
| 89 | SMC_RET1(handle, (uint64_t)ret); |
| 90 | |
Tejas Patel | 6b28225 | 2019-01-10 03:03:47 -0800 | [diff] [blame] | 91 | case PM_FORCE_POWERDOWN: |
| 92 | ret = pm_force_powerdown(pm_arg[0], pm_arg[1]); |
| 93 | SMC_RET1(handle, (uint64_t)ret); |
| 94 | |
Tejas Patel | 59c608a | 2019-01-09 04:10:29 -0800 | [diff] [blame] | 95 | case PM_REQ_SUSPEND: |
| 96 | ret = pm_req_suspend(pm_arg[0], pm_arg[1], pm_arg[2], |
| 97 | pm_arg[3]); |
| 98 | SMC_RET1(handle, (uint64_t)ret); |
| 99 | |
| 100 | case PM_ABORT_SUSPEND: |
| 101 | ret = pm_abort_suspend(pm_arg[0]); |
| 102 | SMC_RET1(handle, (uint64_t)ret); |
| 103 | |
Tejas Patel | 6b28225 | 2019-01-10 03:03:47 -0800 | [diff] [blame] | 104 | case PM_SYSTEM_SHUTDOWN: |
| 105 | ret = pm_system_shutdown(pm_arg[0], pm_arg[1]); |
| 106 | SMC_RET1(handle, (uint64_t)ret); |
| 107 | |
Tejas Patel | 59c608a | 2019-01-09 04:10:29 -0800 | [diff] [blame] | 108 | case PM_REQUEST_DEVICE: |
| 109 | ret = pm_request_device(pm_arg[0], pm_arg[1], pm_arg[2], |
| 110 | pm_arg[3]); |
| 111 | SMC_RET1(handle, (uint64_t)ret); |
| 112 | |
| 113 | case PM_RELEASE_DEVICE: |
| 114 | ret = pm_release_device(pm_arg[0]); |
| 115 | SMC_RET1(handle, (uint64_t)ret); |
| 116 | |
| 117 | case PM_SET_REQUIREMENT: |
| 118 | ret = pm_set_requirement(pm_arg[0], pm_arg[1], pm_arg[2], |
| 119 | pm_arg[3]); |
| 120 | SMC_RET1(handle, (uint64_t)ret); |
| 121 | |
| 122 | case PM_GET_API_VERSION: |
| 123 | { |
| 124 | uint32_t api_version; |
| 125 | |
| 126 | ret = pm_get_api_version(&api_version); |
| 127 | SMC_RET1(handle, (uint64_t)PM_RET_SUCCESS | |
| 128 | ((uint64_t)api_version << 32)); |
| 129 | } |
| 130 | |
| 131 | case PM_GET_DEVICE_STATUS: |
| 132 | { |
| 133 | uint32_t buff[3]; |
| 134 | |
| 135 | ret = pm_get_device_status(pm_arg[0], buff); |
| 136 | SMC_RET2(handle, (uint64_t)ret | ((uint64_t)buff[0] << 32), |
| 137 | (uint64_t)buff[1] | ((uint64_t)buff[2] << 32)); |
| 138 | } |
| 139 | |
| 140 | case PM_RESET_ASSERT: |
| 141 | ret = pm_reset_assert(pm_arg[0], pm_arg[1]); |
| 142 | SMC_RET1(handle, (uint64_t)ret); |
| 143 | |
| 144 | case PM_RESET_GET_STATUS: |
| 145 | { |
| 146 | uint32_t reset_status; |
| 147 | |
| 148 | ret = pm_reset_get_status(pm_arg[0], &reset_status); |
| 149 | SMC_RET1(handle, (uint64_t)ret | |
| 150 | ((uint64_t)reset_status << 32)); |
| 151 | } |
| 152 | |
| 153 | case PM_PINCTRL_REQUEST: |
| 154 | ret = pm_pinctrl_request(pm_arg[0]); |
| 155 | SMC_RET1(handle, (uint64_t)ret); |
| 156 | |
| 157 | case PM_PINCTRL_RELEASE: |
| 158 | ret = pm_pinctrl_release(pm_arg[0]); |
| 159 | SMC_RET1(handle, (uint64_t)ret); |
| 160 | |
| 161 | case PM_PINCTRL_GET_FUNCTION: |
| 162 | { |
| 163 | uint32_t value = 0; |
| 164 | |
| 165 | ret = pm_pinctrl_get_function(pm_arg[0], &value); |
| 166 | SMC_RET1(handle, (uint64_t)ret | ((uint64_t)value) << 32); |
| 167 | } |
| 168 | |
| 169 | case PM_PINCTRL_SET_FUNCTION: |
| 170 | ret = pm_pinctrl_set_function(pm_arg[0], pm_arg[1]); |
| 171 | SMC_RET1(handle, (uint64_t)ret); |
| 172 | |
| 173 | case PM_PINCTRL_CONFIG_PARAM_GET: |
| 174 | { |
| 175 | uint32_t value; |
| 176 | |
| 177 | ret = pm_pinctrl_get_pin_param(pm_arg[0], pm_arg[1], &value); |
| 178 | SMC_RET1(handle, (uint64_t)ret | ((uint64_t)value) << 32); |
| 179 | } |
| 180 | |
| 181 | case PM_PINCTRL_CONFIG_PARAM_SET: |
| 182 | ret = pm_pinctrl_set_pin_param(pm_arg[0], pm_arg[1], pm_arg[2]); |
| 183 | SMC_RET1(handle, (uint64_t)ret); |
| 184 | |
Tejas Patel | 9141f44 | 2019-01-10 03:03:48 -0800 | [diff] [blame] | 185 | case PM_IOCTL: |
| 186 | { |
| 187 | uint32_t value; |
| 188 | |
| 189 | ret = pm_api_ioctl(pm_arg[0], pm_arg[1], pm_arg[2], |
| 190 | pm_arg[3], &value); |
| 191 | SMC_RET1(handle, (uint64_t)ret | ((uint64_t)value) << 32); |
| 192 | } |
| 193 | |
Tejas Patel | 59c608a | 2019-01-09 04:10:29 -0800 | [diff] [blame] | 194 | case PM_CLOCK_ENABLE: |
| 195 | ret = pm_clock_enable(pm_arg[0]); |
| 196 | SMC_RET1(handle, (uint64_t)ret); |
| 197 | |
| 198 | case PM_CLOCK_DISABLE: |
| 199 | ret = pm_clock_disable(pm_arg[0]); |
| 200 | SMC_RET1(handle, (uint64_t)ret); |
| 201 | |
| 202 | case PM_CLOCK_GETSTATE: |
| 203 | { |
| 204 | uint32_t value; |
| 205 | |
| 206 | ret = pm_clock_get_state(pm_arg[0], &value); |
| 207 | SMC_RET1(handle, (uint64_t)ret | ((uint64_t)value) << 32); |
| 208 | } |
| 209 | |
| 210 | case PM_CLOCK_SETDIVIDER: |
| 211 | ret = pm_clock_set_divider(pm_arg[0], pm_arg[1]); |
| 212 | SMC_RET1(handle, (uint64_t)ret); |
| 213 | |
| 214 | case PM_CLOCK_GETDIVIDER: |
| 215 | { |
| 216 | uint32_t value; |
| 217 | |
| 218 | ret = pm_clock_get_divider(pm_arg[0], &value); |
| 219 | SMC_RET1(handle, (uint64_t)ret | ((uint64_t)value) << 32); |
| 220 | } |
| 221 | |
| 222 | case PM_CLOCK_SETPARENT: |
| 223 | ret = pm_clock_set_parent(pm_arg[0], pm_arg[1]); |
| 224 | SMC_RET1(handle, (uint64_t)ret); |
| 225 | |
| 226 | case PM_CLOCK_GETPARENT: |
| 227 | { |
| 228 | uint32_t value; |
| 229 | |
| 230 | ret = pm_clock_get_parent(pm_arg[0], &value); |
| 231 | SMC_RET1(handle, (uint64_t)ret | ((uint64_t)value) << 32); |
| 232 | } |
| 233 | |
| 234 | case PM_PLL_SET_PARAMETER: |
| 235 | ret = pm_pll_set_param(pm_arg[0], pm_arg[1], pm_arg[2]); |
| 236 | SMC_RET1(handle, (uint64_t)ret); |
| 237 | |
| 238 | case PM_PLL_GET_PARAMETER: |
| 239 | { |
| 240 | uint32_t value; |
| 241 | |
| 242 | ret = pm_pll_get_param(pm_arg[0], pm_arg[1], &value); |
| 243 | SMC_RET1(handle, (uint64_t)ret | ((uint64_t)value << 32)); |
| 244 | } |
| 245 | |
| 246 | case PM_PLL_SET_MODE: |
| 247 | ret = pm_pll_set_mode(pm_arg[0], pm_arg[1]); |
| 248 | SMC_RET1(handle, (uint64_t)ret); |
| 249 | |
| 250 | case PM_PLL_GET_MODE: |
| 251 | { |
| 252 | uint32_t mode; |
| 253 | |
| 254 | ret = pm_pll_get_mode(pm_arg[0], &mode); |
| 255 | SMC_RET1(handle, (uint64_t)ret | ((uint64_t)mode << 32)); |
| 256 | } |
| 257 | |
| 258 | default: |
| 259 | WARN("Unimplemented PM Service Call: 0x%x\n", smc_fid); |
| 260 | SMC_RET1(handle, SMC_UNK); |
| 261 | } |
| 262 | } |