1 /* 2 * QEMU PMBus device emulation 3 * 4 * Copyright 2021 Google LLC 5 * 6 * SPDX-License-Identifier: GPL-2.0-or-later 7 */ 8 9 #ifndef HW_PMBUS_DEVICE_H 10 #define HW_PMBUS_DEVICE_H 11 12 #include "qemu/bitops.h" 13 #include "hw/i2c/smbus_slave.h" 14 15 enum pmbus_registers { 16 PMBUS_PAGE = 0x00, /* R/W byte */ 17 PMBUS_OPERATION = 0x01, /* R/W byte */ 18 PMBUS_ON_OFF_CONFIG = 0x02, /* R/W byte */ 19 PMBUS_CLEAR_FAULTS = 0x03, /* Send Byte */ 20 PMBUS_PHASE = 0x04, /* R/W byte */ 21 PMBUS_PAGE_PLUS_WRITE = 0x05, /* Block Write-only */ 22 PMBUS_PAGE_PLUS_READ = 0x06, /* Block Read-only */ 23 PMBUS_WRITE_PROTECT = 0x10, /* R/W byte */ 24 PMBUS_STORE_DEFAULT_ALL = 0x11, /* Send Byte */ 25 PMBUS_RESTORE_DEFAULT_ALL = 0x12, /* Send Byte */ 26 PMBUS_STORE_DEFAULT_CODE = 0x13, /* Write-only Byte */ 27 PMBUS_RESTORE_DEFAULT_CODE = 0x14, /* Write-only Byte */ 28 PMBUS_STORE_USER_ALL = 0x15, /* Send Byte */ 29 PMBUS_RESTORE_USER_ALL = 0x16, /* Send Byte */ 30 PMBUS_STORE_USER_CODE = 0x17, /* Write-only Byte */ 31 PMBUS_RESTORE_USER_CODE = 0x18, /* Write-only Byte */ 32 PMBUS_CAPABILITY = 0x19, /* Read-Only byte */ 33 PMBUS_QUERY = 0x1A, /* Write-Only */ 34 PMBUS_SMBALERT_MASK = 0x1B, /* Block read, Word write */ 35 PMBUS_VOUT_MODE = 0x20, /* R/W byte */ 36 PMBUS_VOUT_COMMAND = 0x21, /* R/W word */ 37 PMBUS_VOUT_TRIM = 0x22, /* R/W word */ 38 PMBUS_VOUT_CAL_OFFSET = 0x23, /* R/W word */ 39 PMBUS_VOUT_MAX = 0x24, /* R/W word */ 40 PMBUS_VOUT_MARGIN_HIGH = 0x25, /* R/W word */ 41 PMBUS_VOUT_MARGIN_LOW = 0x26, /* R/W word */ 42 PMBUS_VOUT_TRANSITION_RATE = 0x27, /* R/W word */ 43 PMBUS_VOUT_DROOP = 0x28, /* R/W word */ 44 PMBUS_VOUT_SCALE_LOOP = 0x29, /* R/W word */ 45 PMBUS_VOUT_SCALE_MONITOR = 0x2A, /* R/W word */ 46 PMBUS_VOUT_MIN = 0x2B, /* R/W word */ 47 PMBUS_COEFFICIENTS = 0x30, /* Read-only block 5 bytes */ 48 PMBUS_POUT_MAX = 0x31, /* R/W word */ 49 PMBUS_MAX_DUTY = 0x32, /* R/W word */ 50 PMBUS_FREQUENCY_SWITCH = 0x33, /* R/W word */ 51 PMBUS_VIN_ON = 0x35, /* R/W word */ 52 PMBUS_VIN_OFF = 0x36, /* R/W word */ 53 PMBUS_INTERLEAVE = 0x37, /* R/W word */ 54 PMBUS_IOUT_CAL_GAIN = 0x38, /* R/W word */ 55 PMBUS_IOUT_CAL_OFFSET = 0x39, /* R/W word */ 56 PMBUS_FAN_CONFIG_1_2 = 0x3A, /* R/W byte */ 57 PMBUS_FAN_COMMAND_1 = 0x3B, /* R/W word */ 58 PMBUS_FAN_COMMAND_2 = 0x3C, /* R/W word */ 59 PMBUS_FAN_CONFIG_3_4 = 0x3D, /* R/W byte */ 60 PMBUS_FAN_COMMAND_3 = 0x3E, /* R/W word */ 61 PMBUS_FAN_COMMAND_4 = 0x3F, /* R/W word */ 62 PMBUS_VOUT_OV_FAULT_LIMIT = 0x40, /* R/W word */ 63 PMBUS_VOUT_OV_FAULT_RESPONSE = 0x41, /* R/W byte */ 64 PMBUS_VOUT_OV_WARN_LIMIT = 0x42, /* R/W word */ 65 PMBUS_VOUT_UV_WARN_LIMIT = 0x43, /* R/W word */ 66 PMBUS_VOUT_UV_FAULT_LIMIT = 0x44, /* R/W word */ 67 PMBUS_VOUT_UV_FAULT_RESPONSE = 0x45, /* R/W byte */ 68 PMBUS_IOUT_OC_FAULT_LIMIT = 0x46, /* R/W word */ 69 PMBUS_IOUT_OC_FAULT_RESPONSE = 0x47, /* R/W byte */ 70 PMBUS_IOUT_OC_LV_FAULT_LIMIT = 0x48, /* R/W word */ 71 PMBUS_IOUT_OC_LV_FAULT_RESPONSE = 0x49, /* R/W byte */ 72 PMBUS_IOUT_OC_WARN_LIMIT = 0x4A, /* R/W word */ 73 PMBUS_IOUT_UC_FAULT_LIMIT = 0x4B, /* R/W word */ 74 PMBUS_IOUT_UC_FAULT_RESPONSE = 0x4C, /* R/W byte */ 75 PMBUS_OT_FAULT_LIMIT = 0x4F, /* R/W word */ 76 PMBUS_OT_FAULT_RESPONSE = 0x50, /* R/W byte */ 77 PMBUS_OT_WARN_LIMIT = 0x51, /* R/W word */ 78 PMBUS_UT_WARN_LIMIT = 0x52, /* R/W word */ 79 PMBUS_UT_FAULT_LIMIT = 0x53, /* R/W word */ 80 PMBUS_UT_FAULT_RESPONSE = 0x54, /* R/W byte */ 81 PMBUS_VIN_OV_FAULT_LIMIT = 0x55, /* R/W word */ 82 PMBUS_VIN_OV_FAULT_RESPONSE = 0x56, /* R/W byte */ 83 PMBUS_VIN_OV_WARN_LIMIT = 0x57, /* R/W word */ 84 PMBUS_VIN_UV_WARN_LIMIT = 0x58, /* R/W word */ 85 PMBUS_VIN_UV_FAULT_LIMIT = 0x59, /* R/W word */ 86 PMBUS_VIN_UV_FAULT_RESPONSE = 0x5A, /* R/W byte */ 87 PMBUS_IIN_OC_FAULT_LIMIT = 0x5B, /* R/W word */ 88 PMBUS_IIN_OC_FAULT_RESPONSE = 0x5C, /* R/W byte */ 89 PMBUS_IIN_OC_WARN_LIMIT = 0x5D, /* R/W word */ 90 PMBUS_POWER_GOOD_ON = 0x5E, /* R/W word */ 91 PMBUS_POWER_GOOD_OFF = 0x5F, /* R/W word */ 92 PMBUS_TON_DELAY = 0x60, /* R/W word */ 93 PMBUS_TON_RISE = 0x61, /* R/W word */ 94 PMBUS_TON_MAX_FAULT_LIMIT = 0x62, /* R/W word */ 95 PMBUS_TON_MAX_FAULT_RESPONSE = 0x63, /* R/W byte */ 96 PMBUS_TOFF_DELAY = 0x64, /* R/W word */ 97 PMBUS_TOFF_FALL = 0x65, /* R/W word */ 98 PMBUS_TOFF_MAX_WARN_LIMIT = 0x66, /* R/W word */ 99 PMBUS_POUT_OP_FAULT_LIMIT = 0x68, /* R/W word */ 100 PMBUS_POUT_OP_FAULT_RESPONSE = 0x69, /* R/W byte */ 101 PMBUS_POUT_OP_WARN_LIMIT = 0x6A, /* R/W word */ 102 PMBUS_PIN_OP_WARN_LIMIT = 0x6B, /* R/W word */ 103 PMBUS_STATUS_BYTE = 0x78, /* R/W byte */ 104 PMBUS_STATUS_WORD = 0x79, /* R/W word */ 105 PMBUS_STATUS_VOUT = 0x7A, /* R/W byte */ 106 PMBUS_STATUS_IOUT = 0x7B, /* R/W byte */ 107 PMBUS_STATUS_INPUT = 0x7C, /* R/W byte */ 108 PMBUS_STATUS_TEMPERATURE = 0x7D, /* R/W byte */ 109 PMBUS_STATUS_CML = 0x7E, /* R/W byte */ 110 PMBUS_STATUS_OTHER = 0x7F, /* R/W byte */ 111 PMBUS_STATUS_MFR_SPECIFIC = 0x80, /* R/W byte */ 112 PMBUS_STATUS_FANS_1_2 = 0x81, /* R/W byte */ 113 PMBUS_STATUS_FANS_3_4 = 0x82, /* R/W byte */ 114 PMBUS_READ_EIN = 0x86, /* Read-Only block 5 bytes */ 115 PMBUS_READ_EOUT = 0x87, /* Read-Only block 5 bytes */ 116 PMBUS_READ_VIN = 0x88, /* Read-Only word */ 117 PMBUS_READ_IIN = 0x89, /* Read-Only word */ 118 PMBUS_READ_VCAP = 0x8A, /* Read-Only word */ 119 PMBUS_READ_VOUT = 0x8B, /* Read-Only word */ 120 PMBUS_READ_IOUT = 0x8C, /* Read-Only word */ 121 PMBUS_READ_TEMPERATURE_1 = 0x8D, /* Read-Only word */ 122 PMBUS_READ_TEMPERATURE_2 = 0x8E, /* Read-Only word */ 123 PMBUS_READ_TEMPERATURE_3 = 0x8F, /* Read-Only word */ 124 PMBUS_READ_FAN_SPEED_1 = 0x90, /* Read-Only word */ 125 PMBUS_READ_FAN_SPEED_2 = 0x91, /* Read-Only word */ 126 PMBUS_READ_FAN_SPEED_3 = 0x92, /* Read-Only word */ 127 PMBUS_READ_FAN_SPEED_4 = 0x93, /* Read-Only word */ 128 PMBUS_READ_DUTY_CYCLE = 0x94, /* Read-Only word */ 129 PMBUS_READ_FREQUENCY = 0x95, /* Read-Only word */ 130 PMBUS_READ_POUT = 0x96, /* Read-Only word */ 131 PMBUS_READ_PIN = 0x97, /* Read-Only word */ 132 PMBUS_REVISION = 0x98, /* Read-Only byte */ 133 PMBUS_MFR_ID = 0x99, /* R/W block */ 134 PMBUS_MFR_MODEL = 0x9A, /* R/W block */ 135 PMBUS_MFR_REVISION = 0x9B, /* R/W block */ 136 PMBUS_MFR_LOCATION = 0x9C, /* R/W block */ 137 PMBUS_MFR_DATE = 0x9D, /* R/W block */ 138 PMBUS_MFR_SERIAL = 0x9E, /* R/W block */ 139 PMBUS_APP_PROFILE_SUPPORT = 0x9F, /* Read-Only block-read */ 140 PMBUS_MFR_VIN_MIN = 0xA0, /* Read-Only word */ 141 PMBUS_MFR_VIN_MAX = 0xA1, /* Read-Only word */ 142 PMBUS_MFR_IIN_MAX = 0xA2, /* Read-Only word */ 143 PMBUS_MFR_PIN_MAX = 0xA3, /* Read-Only word */ 144 PMBUS_MFR_VOUT_MIN = 0xA4, /* Read-Only word */ 145 PMBUS_MFR_VOUT_MAX = 0xA5, /* Read-Only word */ 146 PMBUS_MFR_IOUT_MAX = 0xA6, /* Read-Only word */ 147 PMBUS_MFR_POUT_MAX = 0xA7, /* Read-Only word */ 148 PMBUS_MFR_TAMBIENT_MAX = 0xA8, /* Read-Only word */ 149 PMBUS_MFR_TAMBIENT_MIN = 0xA9, /* Read-Only word */ 150 PMBUS_MFR_EFFICIENCY_LL = 0xAA, /* Read-Only block 14 bytes */ 151 PMBUS_MFR_EFFICIENCY_HL = 0xAB, /* Read-Only block 14 bytes */ 152 PMBUS_MFR_PIN_ACCURACY = 0xAC, /* Read-Only byte */ 153 PMBUS_IC_DEVICE_ID = 0xAD, /* Read-Only block-read */ 154 PMBUS_IC_DEVICE_REV = 0xAE, /* Read-Only block-read */ 155 PMBUS_MFR_MAX_TEMP_1 = 0xC0, /* R/W word */ 156 PMBUS_MFR_MAX_TEMP_2 = 0xC1, /* R/W word */ 157 PMBUS_MFR_MAX_TEMP_3 = 0xC2, /* R/W word */ 158 PMBUS_IDLE_STATE = 0xFF, 159 }; 160 161 /* STATUS_WORD */ 162 #define PB_STATUS_VOUT BIT(15) 163 #define PB_STATUS_IOUT_POUT BIT(14) 164 #define PB_STATUS_INPUT BIT(13) 165 #define PB_STATUS_WORD_MFR BIT(12) 166 #define PB_STATUS_POWER_GOOD_N BIT(11) 167 #define PB_STATUS_FAN BIT(10) 168 #define PB_STATUS_OTHER BIT(9) 169 #define PB_STATUS_UNKNOWN BIT(8) 170 /* STATUS_BYTE */ 171 #define PB_STATUS_BUSY BIT(7) 172 #define PB_STATUS_OFF BIT(6) 173 #define PB_STATUS_VOUT_OV BIT(5) 174 #define PB_STATUS_IOUT_OC BIT(4) 175 #define PB_STATUS_VIN_UV BIT(3) 176 #define PB_STATUS_TEMPERATURE BIT(2) 177 #define PB_STATUS_CML BIT(1) 178 #define PB_STATUS_NONE_ABOVE BIT(0) 179 180 /* STATUS_VOUT */ 181 #define PB_STATUS_VOUT_OV_FAULT BIT(7) /* Output Overvoltage Fault */ 182 #define PB_STATUS_VOUT_OV_WARN BIT(6) /* Output Overvoltage Warning */ 183 #define PB_STATUS_VOUT_UV_WARN BIT(5) /* Output Undervoltage Warning */ 184 #define PB_STATUS_VOUT_UV_FAULT BIT(4) /* Output Undervoltage Fault */ 185 #define PB_STATUS_VOUT_MAX BIT(3) 186 #define PB_STATUS_VOUT_TON_MAX_FAULT BIT(2) 187 #define PB_STATUS_VOUT_TOFF_MAX_WARN BIT(1) 188 189 /* STATUS_IOUT */ 190 #define PB_STATUS_IOUT_OC_FAULT BIT(7) /* Output Overcurrent Fault */ 191 #define PB_STATUS_IOUT_OC_LV_FAULT BIT(6) /* Output OC And Low Voltage Fault */ 192 #define PB_STATUS_IOUT_OC_WARN BIT(5) /* Output Overcurrent Warning */ 193 #define PB_STATUS_IOUT_UC_FAULT BIT(4) /* Output Undercurrent Fault */ 194 #define PB_STATUS_CURR_SHARE BIT(3) /* Current Share Fault */ 195 #define PB_STATUS_PWR_LIM_MODE BIT(2) /* In Power Limiting Mode */ 196 #define PB_STATUS_POUT_OP_FAULT BIT(1) /* Output Overpower Fault */ 197 #define PB_STATUS_POUT_OP_WARN BIT(0) /* Output Overpower Warning */ 198 199 /* STATUS_INPUT */ 200 #define PB_STATUS_INPUT_VIN_OV_FAULT BIT(7) /* Input Overvoltage Fault */ 201 #define PB_STATUS_INPUT_VIN_OV_WARN BIT(6) /* Input Overvoltage Warning */ 202 #define PB_STATUS_INPUT_VIN_UV_WARN BIT(5) /* Input Undervoltage Warning */ 203 #define PB_STATUS_INPUT_VIN_UV_FAULT BIT(4) /* Input Undervoltage Fault */ 204 #define PB_STATUS_INPUT_IIN_OC_FAULT BIT(2) /* Input Overcurrent Fault */ 205 #define PB_STATUS_INPUT_IIN_OC_WARN BIT(1) /* Input Overcurrent Warning */ 206 #define PB_STATUS_INPUT_PIN_OP_WARN BIT(0) /* Input Overpower Warning */ 207 208 /* STATUS_TEMPERATURE */ 209 #define PB_STATUS_OT_FAULT BIT(7) /* Overtemperature Fault */ 210 #define PB_STATUS_OT_WARN BIT(6) /* Overtemperature Warning */ 211 #define PB_STATUS_UT_WARN BIT(5) /* Undertemperature Warning */ 212 #define PB_STATUS_UT_FAULT BIT(4) /* Undertemperature Fault */ 213 214 /* STATUS_CML */ 215 #define PB_CML_FAULT_INVALID_CMD BIT(7) /* Invalid/Unsupported Command */ 216 #define PB_CML_FAULT_INVALID_DATA BIT(6) /* Invalid/Unsupported Data */ 217 #define PB_CML_FAULT_PEC BIT(5) /* Packet Error Check Failed */ 218 #define PB_CML_FAULT_MEMORY BIT(4) /* Memory Fault Detected */ 219 #define PB_CML_FAULT_PROCESSOR BIT(3) /* Processor Fault Detected */ 220 #define PB_CML_FAULT_OTHER_COMM BIT(1) /* Other communication fault */ 221 #define PB_CML_FAULT_OTHER_MEM_LOGIC BIT(0) /* Other Memory Or Logic Fault */ 222 223 /* OPERATION*/ 224 #define PB_OP_ON BIT(7) /* PSU is switched on */ 225 #define PB_OP_MARGIN_HIGH BIT(5) /* PSU vout is set to margin high */ 226 #define PB_OP_MARGIN_LOW BIT(4) /* PSU vout is set to margin low */ 227 228 /* PAGES */ 229 #define PB_MAX_PAGES 0x1F 230 #define PB_ALL_PAGES 0xFF 231 232 #define PMBUS_ERR_BYTE 0xFF 233 234 #define TYPE_PMBUS_DEVICE "pmbus-device" 235 OBJECT_DECLARE_TYPE(PMBusDevice, PMBusDeviceClass, 236 PMBUS_DEVICE) 237 238 /* flags */ 239 #define PB_HAS_COEFFICIENTS BIT_ULL(9) 240 #define PB_HAS_VIN BIT_ULL(10) 241 #define PB_HAS_VOUT BIT_ULL(11) 242 #define PB_HAS_VOUT_MARGIN BIT_ULL(12) 243 #define PB_HAS_VIN_RATING BIT_ULL(13) 244 #define PB_HAS_VOUT_RATING BIT_ULL(14) 245 #define PB_HAS_VOUT_MODE BIT_ULL(15) 246 #define PB_HAS_VCAP BIT_ULL(16) 247 #define PB_HAS_IOUT BIT_ULL(21) 248 #define PB_HAS_IIN BIT_ULL(22) 249 #define PB_HAS_IOUT_RATING BIT_ULL(23) 250 #define PB_HAS_IIN_RATING BIT_ULL(24) 251 #define PB_HAS_IOUT_GAIN BIT_ULL(25) 252 #define PB_HAS_POUT BIT_ULL(30) 253 #define PB_HAS_PIN BIT_ULL(31) 254 #define PB_HAS_EIN BIT_ULL(32) 255 #define PB_HAS_EOUT BIT_ULL(33) 256 #define PB_HAS_POUT_RATING BIT_ULL(34) 257 #define PB_HAS_PIN_RATING BIT_ULL(35) 258 #define PB_HAS_TEMPERATURE BIT_ULL(40) 259 #define PB_HAS_TEMP2 BIT_ULL(41) 260 #define PB_HAS_TEMP3 BIT_ULL(42) 261 #define PB_HAS_TEMP_RATING BIT_ULL(43) 262 #define PB_HAS_FAN BIT_ULL(44) 263 #define PB_HAS_MFR_INFO BIT_ULL(50) 264 #define PB_HAS_STATUS_MFR_SPECIFIC BIT_ULL(51) 265 266 struct PMBusDeviceClass { 267 SMBusDeviceClass parent_class; 268 uint8_t device_num_pages; 269 270 /** 271 * Implement quick_cmd, receive byte, and write_data to support non-standard 272 * PMBus functionality 273 */ 274 void (*quick_cmd)(PMBusDevice *dev, uint8_t read); 275 int (*write_data)(PMBusDevice *dev, const uint8_t *buf, uint8_t len); 276 uint8_t (*receive_byte)(PMBusDevice *dev); 277 }; 278 279 /* 280 * According to the spec, each page may offer the full range of PMBus commands 281 * available for each output or non-PMBus device. 282 * Therefore, we can't assume that any registers will always be the same across 283 * all pages. 284 * The page 0xFF is intended for writes to all pages 285 */ 286 typedef struct PMBusPage { 287 uint64_t page_flags; 288 289 uint8_t page; /* R/W byte */ 290 uint8_t operation; /* R/W byte */ 291 uint8_t on_off_config; /* R/W byte */ 292 uint8_t write_protect; /* R/W byte */ 293 uint8_t phase; /* R/W byte */ 294 uint8_t vout_mode; /* R/W byte */ 295 uint16_t vout_command; /* R/W word */ 296 uint16_t vout_trim; /* R/W word */ 297 uint16_t vout_cal_offset; /* R/W word */ 298 uint16_t vout_max; /* R/W word */ 299 uint16_t vout_margin_high; /* R/W word */ 300 uint16_t vout_margin_low; /* R/W word */ 301 uint16_t vout_transition_rate; /* R/W word */ 302 uint16_t vout_droop; /* R/W word */ 303 uint16_t vout_scale_loop; /* R/W word */ 304 uint16_t vout_scale_monitor; /* R/W word */ 305 uint16_t vout_min; /* R/W word */ 306 uint8_t coefficients[5]; /* Read-only block 5 bytes */ 307 uint16_t pout_max; /* R/W word */ 308 uint16_t max_duty; /* R/W word */ 309 uint16_t frequency_switch; /* R/W word */ 310 uint16_t vin_on; /* R/W word */ 311 uint16_t vin_off; /* R/W word */ 312 uint16_t iout_cal_gain; /* R/W word */ 313 uint16_t iout_cal_offset; /* R/W word */ 314 uint8_t fan_config_1_2; /* R/W byte */ 315 uint16_t fan_command_1; /* R/W word */ 316 uint16_t fan_command_2; /* R/W word */ 317 uint8_t fan_config_3_4; /* R/W byte */ 318 uint16_t fan_command_3; /* R/W word */ 319 uint16_t fan_command_4; /* R/W word */ 320 uint16_t vout_ov_fault_limit; /* R/W word */ 321 uint8_t vout_ov_fault_response; /* R/W byte */ 322 uint16_t vout_ov_warn_limit; /* R/W word */ 323 uint16_t vout_uv_warn_limit; /* R/W word */ 324 uint16_t vout_uv_fault_limit; /* R/W word */ 325 uint8_t vout_uv_fault_response; /* R/W byte */ 326 uint16_t iout_oc_fault_limit; /* R/W word */ 327 uint8_t iout_oc_fault_response; /* R/W byte */ 328 uint16_t iout_oc_lv_fault_limit; /* R/W word */ 329 uint8_t iout_oc_lv_fault_response; /* R/W byte */ 330 uint16_t iout_oc_warn_limit; /* R/W word */ 331 uint16_t iout_uc_fault_limit; /* R/W word */ 332 uint8_t iout_uc_fault_response; /* R/W byte */ 333 uint16_t ot_fault_limit; /* R/W word */ 334 uint8_t ot_fault_response; /* R/W byte */ 335 uint16_t ot_warn_limit; /* R/W word */ 336 uint16_t ut_warn_limit; /* R/W word */ 337 uint16_t ut_fault_limit; /* R/W word */ 338 uint8_t ut_fault_response; /* R/W byte */ 339 uint16_t vin_ov_fault_limit; /* R/W word */ 340 uint8_t vin_ov_fault_response; /* R/W byte */ 341 uint16_t vin_ov_warn_limit; /* R/W word */ 342 uint16_t vin_uv_warn_limit; /* R/W word */ 343 uint16_t vin_uv_fault_limit; /* R/W word */ 344 uint8_t vin_uv_fault_response; /* R/W byte */ 345 uint16_t iin_oc_fault_limit; /* R/W word */ 346 uint8_t iin_oc_fault_response; /* R/W byte */ 347 uint16_t iin_oc_warn_limit; /* R/W word */ 348 uint16_t power_good_on; /* R/W word */ 349 uint16_t power_good_off; /* R/W word */ 350 uint16_t ton_delay; /* R/W word */ 351 uint16_t ton_rise; /* R/W word */ 352 uint16_t ton_max_fault_limit; /* R/W word */ 353 uint8_t ton_max_fault_response; /* R/W byte */ 354 uint16_t toff_delay; /* R/W word */ 355 uint16_t toff_fall; /* R/W word */ 356 uint16_t toff_max_warn_limit; /* R/W word */ 357 uint16_t pout_op_fault_limit; /* R/W word */ 358 uint8_t pout_op_fault_response; /* R/W byte */ 359 uint16_t pout_op_warn_limit; /* R/W word */ 360 uint16_t pin_op_warn_limit; /* R/W word */ 361 uint16_t status_word; /* R/W word */ 362 uint8_t status_vout; /* R/W byte */ 363 uint8_t status_iout; /* R/W byte */ 364 uint8_t status_input; /* R/W byte */ 365 uint8_t status_temperature; /* R/W byte */ 366 uint8_t status_cml; /* R/W byte */ 367 uint8_t status_other; /* R/W byte */ 368 uint8_t status_mfr_specific; /* R/W byte */ 369 uint8_t status_fans_1_2; /* R/W byte */ 370 uint8_t status_fans_3_4; /* R/W byte */ 371 uint8_t read_ein[5]; /* Read-Only block 5 bytes */ 372 uint8_t read_eout[5]; /* Read-Only block 5 bytes */ 373 uint16_t read_vin; /* Read-Only word */ 374 uint16_t read_iin; /* Read-Only word */ 375 uint16_t read_vcap; /* Read-Only word */ 376 uint16_t read_vout; /* Read-Only word */ 377 uint16_t read_iout; /* Read-Only word */ 378 uint16_t read_temperature_1; /* Read-Only word */ 379 uint16_t read_temperature_2; /* Read-Only word */ 380 uint16_t read_temperature_3; /* Read-Only word */ 381 uint16_t read_fan_speed_1; /* Read-Only word */ 382 uint16_t read_fan_speed_2; /* Read-Only word */ 383 uint16_t read_fan_speed_3; /* Read-Only word */ 384 uint16_t read_fan_speed_4; /* Read-Only word */ 385 uint16_t read_duty_cycle; /* Read-Only word */ 386 uint16_t read_frequency; /* Read-Only word */ 387 uint16_t read_pout; /* Read-Only word */ 388 uint16_t read_pin; /* Read-Only word */ 389 uint8_t revision; /* Read-Only byte */ 390 const char *mfr_id; /* R/W block */ 391 const char *mfr_model; /* R/W block */ 392 const char *mfr_revision; /* R/W block */ 393 const char *mfr_location; /* R/W block */ 394 const char *mfr_date; /* R/W block */ 395 const char *mfr_serial; /* R/W block */ 396 const char *app_profile_support; /* Read-Only block-read */ 397 uint16_t mfr_vin_min; /* Read-Only word */ 398 uint16_t mfr_vin_max; /* Read-Only word */ 399 uint16_t mfr_iin_max; /* Read-Only word */ 400 uint16_t mfr_pin_max; /* Read-Only word */ 401 uint16_t mfr_vout_min; /* Read-Only word */ 402 uint16_t mfr_vout_max; /* Read-Only word */ 403 uint16_t mfr_iout_max; /* Read-Only word */ 404 uint16_t mfr_pout_max; /* Read-Only word */ 405 uint16_t mfr_tambient_max; /* Read-Only word */ 406 uint16_t mfr_tambient_min; /* Read-Only word */ 407 uint8_t mfr_efficiency_ll[14]; /* Read-Only block 14 bytes */ 408 uint8_t mfr_efficiency_hl[14]; /* Read-Only block 14 bytes */ 409 uint8_t mfr_pin_accuracy; /* Read-Only byte */ 410 uint16_t mfr_max_temp_1; /* R/W word */ 411 uint16_t mfr_max_temp_2; /* R/W word */ 412 uint16_t mfr_max_temp_3; /* R/W word */ 413 } PMBusPage; 414 415 /* State */ 416 struct PMBusDevice { 417 SMBusDevice smb; 418 419 uint8_t num_pages; 420 uint8_t code; 421 uint8_t page; 422 423 /* 424 * PMBus registers are stored in a PMBusPage structure allocated by 425 * calling pmbus_pages_alloc() 426 */ 427 PMBusPage *pages; 428 uint8_t capability; 429 430 431 int32_t in_buf_len; 432 uint8_t *in_buf; 433 int32_t out_buf_len; 434 uint8_t out_buf[SMBUS_DATA_MAX_LEN]; 435 }; 436 437 /** 438 * Direct mode coefficients 439 * @var m - mantissa 440 * @var b - offset 441 * @var R - exponent 442 */ 443 typedef struct PMBusCoefficients { 444 int32_t m; /* mantissa */ 445 int64_t b; /* offset */ 446 int32_t R; /* exponent */ 447 } PMBusCoefficients; 448 449 /** 450 * VOUT_Mode bit fields 451 */ 452 typedef struct PMBusVoutMode { 453 uint8_t mode:3; 454 int8_t exp:5; 455 } PMBusVoutMode; 456 457 /** 458 * Convert sensor values to direct mode format 459 * 460 * Y = (m * x - b) * 10^R 461 * 462 * @return uint16_t 463 */ 464 uint16_t pmbus_data2direct_mode(PMBusCoefficients c, uint32_t value); 465 466 /** 467 * Convert direct mode formatted data into sensor reading 468 * 469 * X = (Y * 10^-R - b) / m 470 * 471 * @return uint32_t 472 */ 473 uint32_t pmbus_direct_mode2data(PMBusCoefficients c, uint16_t value); 474 475 /** 476 * Convert sensor values to linear mode format 477 * 478 * L = D * 2^(-e) 479 * 480 * @return uint16 481 */ 482 uint16_t pmbus_data2linear_mode(uint16_t value, int exp); 483 484 /** 485 * Convert linear mode formatted data into sensor reading 486 * 487 * D = L * 2^e 488 * 489 * @return uint16 490 */ 491 uint16_t pmbus_linear_mode2data(uint16_t value, int exp); 492 493 /** 494 * @brief Send a block of data over PMBus 495 * Assumes that the bytes in the block are already ordered correctly, 496 * also assumes the length has been prepended to the block if necessary 497 * | low_byte | ... | high_byte | 498 * @param state - maintains state of the PMBus device 499 * @param data - byte array to be sent by device 500 * @param len - number 501 */ 502 void pmbus_send(PMBusDevice *state, const uint8_t *data, uint16_t len); 503 void pmbus_send8(PMBusDevice *state, uint8_t data); 504 void pmbus_send16(PMBusDevice *state, uint16_t data); 505 void pmbus_send32(PMBusDevice *state, uint32_t data); 506 void pmbus_send64(PMBusDevice *state, uint64_t data); 507 508 /** 509 * @brief Send a string over PMBus with length prepended. 510 * Length is calculated using str_len() 511 */ 512 void pmbus_send_string(PMBusDevice *state, const char *data); 513 514 /** 515 * @brief Receive data sent with Block Write. 516 * @param dest - memory with enough capacity to receive the write 517 * @param len - the capacity of dest 518 */ 519 uint8_t pmbus_receive_block(PMBusDevice *pmdev, uint8_t *dest, size_t len); 520 521 /** 522 * @brief Receive data over PMBus 523 * These methods help track how much data is being received over PMBus 524 * Log to GUEST_ERROR if too much or too little is sent. 525 */ 526 uint8_t pmbus_receive8(PMBusDevice *pmdev); 527 uint16_t pmbus_receive16(PMBusDevice *pmdev); 528 uint32_t pmbus_receive32(PMBusDevice *pmdev); 529 uint64_t pmbus_receive64(PMBusDevice *pmdev); 530 531 /** 532 * PMBus page config must be called before any page is first used. 533 * It will allocate memory for all the pages if needed. 534 * Passed in flags overwrite existing flags if any. 535 * @param page_index the page to which the flags are applied, setting page_index 536 * to 0xFF applies the passed in flags to all pages. 537 * @param flags 538 */ 539 int pmbus_page_config(PMBusDevice *pmdev, uint8_t page_index, uint64_t flags); 540 541 /** 542 * Update the status registers when sensor values change. 543 * Useful if modifying sensors through qmp, this way status registers get 544 * updated 545 */ 546 void pmbus_check_limits(PMBusDevice *pmdev); 547 548 /** 549 * Enter an idle state where only the PMBUS_ERR_BYTE will be returned 550 * indefinitely until a new command is issued. 551 */ 552 void pmbus_idle(PMBusDevice *pmdev); 553 554 extern const VMStateDescription vmstate_pmbus_device; 555 556 #define VMSTATE_PMBUS_DEVICE(_field, _state) { \ 557 .name = (stringify(_field)), \ 558 .size = sizeof(PMBusDevice), \ 559 .vmsd = &vmstate_pmbus_device, \ 560 .flags = VMS_STRUCT, \ 561 .offset = vmstate_offset_value(_state, _field, PMBusDevice), \ 562 } 563 564 #endif 565