| /* |
| * PMBus wrapper over SMBus |
| * |
| * Copyright 2021 Google LLC |
| * |
| * SPDX-License-Identifier: GPL-2.0-or-later |
| */ |
| |
| #include "qemu/osdep.h" |
| #include <math.h> |
| #include <string.h> |
| #include "hw/i2c/pmbus_device.h" |
| #include "migration/vmstate.h" |
| #include "qemu/module.h" |
| #include "qemu/log.h" |
| |
| uint16_t pmbus_data2direct_mode(PMBusCoefficients c, uint32_t value) |
| { |
| /* R is usually negative to fit large readings into 16 bits */ |
| uint16_t y = (c.m * value + c.b) * pow(10, c.R); |
| return y; |
| } |
| |
| uint32_t pmbus_direct_mode2data(PMBusCoefficients c, uint16_t value) |
| { |
| /* X = (Y * 10^-R - b) / m */ |
| uint32_t x = (value / pow(10, c.R) - c.b) / c.m; |
| return x; |
| } |
| |
| uint16_t pmbus_data2linear_mode(uint16_t value, int exp) |
| { |
| /* L = D * 2^(-e) */ |
| if (exp < 0) { |
| return value << (-exp); |
| } |
| return value >> exp; |
| } |
| |
| uint16_t pmbus_linear_mode2data(uint16_t value, int exp) |
| { |
| /* D = L * 2^e */ |
| if (exp < 0) { |
| return value >> (-exp); |
| } |
| return value << exp; |
| } |
| |
| void pmbus_send(PMBusDevice *pmdev, const uint8_t *data, uint16_t len) |
| { |
| if (pmdev->out_buf_len + len > SMBUS_DATA_MAX_LEN) { |
| qemu_log_mask(LOG_GUEST_ERROR, |
| "PMBus device tried to send too much data"); |
| len = 0; |
| } |
| |
| for (int i = len - 1; i >= 0; i--) { |
| pmdev->out_buf[i + pmdev->out_buf_len] = data[len - i - 1]; |
| } |
| pmdev->out_buf_len += len; |
| } |
| |
| /* Internal only, convert unsigned ints to the little endian bus */ |
| static void pmbus_send_uint(PMBusDevice *pmdev, uint64_t data, uint8_t size) |
| { |
| uint8_t bytes[8]; |
| g_assert(size <= 8); |
| |
| for (int i = 0; i < size; i++) { |
| bytes[i] = data & 0xFF; |
| data = data >> 8; |
| } |
| pmbus_send(pmdev, bytes, size); |
| } |
| |
| void pmbus_send8(PMBusDevice *pmdev, uint8_t data) |
| { |
| pmbus_send_uint(pmdev, data, 1); |
| } |
| |
| void pmbus_send16(PMBusDevice *pmdev, uint16_t data) |
| { |
| pmbus_send_uint(pmdev, data, 2); |
| } |
| |
| void pmbus_send32(PMBusDevice *pmdev, uint32_t data) |
| { |
| pmbus_send_uint(pmdev, data, 4); |
| } |
| |
| void pmbus_send64(PMBusDevice *pmdev, uint64_t data) |
| { |
| pmbus_send_uint(pmdev, data, 8); |
| } |
| |
| void pmbus_send_string(PMBusDevice *pmdev, const char *data) |
| { |
| size_t len = strlen(data); |
| g_assert(len > 0); |
| g_assert(len + pmdev->out_buf_len < SMBUS_DATA_MAX_LEN); |
| pmdev->out_buf[len + pmdev->out_buf_len] = len; |
| |
| for (int i = len - 1; i >= 0; i--) { |
| pmdev->out_buf[i + pmdev->out_buf_len] = data[len - 1 - i]; |
| } |
| pmdev->out_buf_len += len + 1; |
| } |
| |
| |
| static uint64_t pmbus_receive_uint(PMBusDevice *pmdev) |
| { |
| uint64_t ret = 0; |
| |
| /* Exclude command code from return value */ |
| pmdev->in_buf++; |
| pmdev->in_buf_len--; |
| |
| for (int i = pmdev->in_buf_len - 1; i >= 0; i--) { |
| ret = ret << 8 | pmdev->in_buf[i]; |
| } |
| return ret; |
| } |
| |
| uint8_t pmbus_receive8(PMBusDevice *pmdev) |
| { |
| if (pmdev->in_buf_len - 1 != 1) { |
| qemu_log_mask(LOG_GUEST_ERROR, |
| "%s: length mismatch. Expected 1 byte, got %d bytes\n", |
| __func__, pmdev->in_buf_len - 1); |
| } |
| return pmbus_receive_uint(pmdev); |
| } |
| |
| uint16_t pmbus_receive16(PMBusDevice *pmdev) |
| { |
| if (pmdev->in_buf_len - 1 != 2) { |
| qemu_log_mask(LOG_GUEST_ERROR, |
| "%s: length mismatch. Expected 2 bytes, got %d bytes\n", |
| __func__, pmdev->in_buf_len - 1); |
| } |
| return pmbus_receive_uint(pmdev); |
| } |
| |
| uint32_t pmbus_receive32(PMBusDevice *pmdev) |
| { |
| if (pmdev->in_buf_len - 1 != 4) { |
| qemu_log_mask(LOG_GUEST_ERROR, |
| "%s: length mismatch. Expected 4 bytes, got %d bytes\n", |
| __func__, pmdev->in_buf_len - 1); |
| } |
| return pmbus_receive_uint(pmdev); |
| } |
| |
| uint64_t pmbus_receive64(PMBusDevice *pmdev) |
| { |
| if (pmdev->in_buf_len - 1 != 8) { |
| qemu_log_mask(LOG_GUEST_ERROR, |
| "%s: length mismatch. Expected 8 bytes, got %d bytes\n", |
| __func__, pmdev->in_buf_len - 1); |
| } |
| return pmbus_receive_uint(pmdev); |
| } |
| |
| static uint8_t pmbus_out_buf_pop(PMBusDevice *pmdev) |
| { |
| if (pmdev->out_buf_len == 0) { |
| qemu_log_mask(LOG_GUEST_ERROR, |
| "%s: tried to read from empty buffer", |
| __func__); |
| return PMBUS_ERR_BYTE; |
| } |
| uint8_t data = pmdev->out_buf[pmdev->out_buf_len - 1]; |
| pmdev->out_buf_len--; |
| return data; |
| } |
| |
| static void pmbus_quick_cmd(SMBusDevice *smd, uint8_t read) |
| { |
| PMBusDevice *pmdev = PMBUS_DEVICE(smd); |
| PMBusDeviceClass *pmdc = PMBUS_DEVICE_GET_CLASS(pmdev); |
| |
| if (pmdc->quick_cmd) { |
| pmdc->quick_cmd(pmdev, read); |
| } |
| } |
| |
| static void pmbus_pages_alloc(PMBusDevice *pmdev) |
| { |
| /* some PMBus devices don't use the PAGE command, so they get 1 page */ |
| PMBusDeviceClass *k = PMBUS_DEVICE_GET_CLASS(pmdev); |
| if (k->device_num_pages == 0) { |
| k->device_num_pages = 1; |
| } |
| pmdev->num_pages = k->device_num_pages; |
| pmdev->pages = g_new0(PMBusPage, k->device_num_pages); |
| } |
| |
| void pmbus_check_limits(PMBusDevice *pmdev) |
| { |
| for (int i = 0; i < pmdev->num_pages; i++) { |
| if ((pmdev->pages[i].operation & PB_OP_ON) == 0) { |
| continue; /* don't check powered off devices */ |
| } |
| |
| if (pmdev->pages[i].read_vout > pmdev->pages[i].vout_ov_fault_limit) { |
| pmdev->pages[i].status_word |= PB_STATUS_VOUT; |
| pmdev->pages[i].status_vout |= PB_STATUS_VOUT_OV_FAULT; |
| } |
| |
| if (pmdev->pages[i].read_vout > pmdev->pages[i].vout_ov_warn_limit) { |
| pmdev->pages[i].status_word |= PB_STATUS_VOUT; |
| pmdev->pages[i].status_vout |= PB_STATUS_VOUT_OV_WARN; |
| } |
| |
| if (pmdev->pages[i].read_vout < pmdev->pages[i].vout_uv_warn_limit) { |
| pmdev->pages[i].status_word |= PB_STATUS_VOUT; |
| pmdev->pages[i].status_vout |= PB_STATUS_VOUT_UV_WARN; |
| } |
| |
| if (pmdev->pages[i].read_vout < pmdev->pages[i].vout_uv_fault_limit) { |
| pmdev->pages[i].status_word |= PB_STATUS_VOUT; |
| pmdev->pages[i].status_vout |= PB_STATUS_VOUT_UV_FAULT; |
| } |
| |
| if (pmdev->pages[i].read_vin > pmdev->pages[i].vin_ov_warn_limit) { |
| pmdev->pages[i].status_word |= PB_STATUS_INPUT; |
| pmdev->pages[i].status_input |= PB_STATUS_INPUT_VIN_OV_WARN; |
| } |
| |
| if (pmdev->pages[i].read_vin < pmdev->pages[i].vin_uv_warn_limit) { |
| pmdev->pages[i].status_word |= PB_STATUS_INPUT; |
| pmdev->pages[i].status_input |= PB_STATUS_INPUT_VIN_UV_WARN; |
| } |
| |
| if (pmdev->pages[i].read_iout > pmdev->pages[i].iout_oc_warn_limit) { |
| pmdev->pages[i].status_word |= PB_STATUS_IOUT_POUT; |
| pmdev->pages[i].status_iout |= PB_STATUS_IOUT_OC_WARN; |
| } |
| |
| if (pmdev->pages[i].read_iout > pmdev->pages[i].iout_oc_fault_limit) { |
| pmdev->pages[i].status_word |= PB_STATUS_IOUT_POUT; |
| pmdev->pages[i].status_iout |= PB_STATUS_IOUT_OC_FAULT; |
| } |
| |
| if (pmdev->pages[i].read_pin > pmdev->pages[i].pin_op_warn_limit) { |
| pmdev->pages[i].status_word |= PB_STATUS_INPUT; |
| pmdev->pages[i].status_input |= PB_STATUS_INPUT_PIN_OP_WARN; |
| } |
| |
| if (pmdev->pages[i].read_temperature_1 |
| > pmdev->pages[i].ot_fault_limit) { |
| pmdev->pages[i].status_word |= PB_STATUS_TEMPERATURE; |
| pmdev->pages[i].status_temperature |= PB_STATUS_OT_FAULT; |
| } |
| |
| if (pmdev->pages[i].read_temperature_1 |
| > pmdev->pages[i].ot_warn_limit) { |
| pmdev->pages[i].status_word |= PB_STATUS_TEMPERATURE; |
| pmdev->pages[i].status_temperature |= PB_STATUS_OT_WARN; |
| } |
| } |
| } |
| |
| /* assert the status_cml error upon receipt of malformed command */ |
| static void pmbus_cml_error(PMBusDevice *pmdev) |
| { |
| for (int i = 0; i < pmdev->num_pages; i++) { |
| pmdev->pages[i].status_word |= PMBUS_STATUS_CML; |
| pmdev->pages[i].status_cml |= PB_CML_FAULT_INVALID_CMD; |
| } |
| } |
| |
| static uint8_t pmbus_receive_byte(SMBusDevice *smd) |
| { |
| PMBusDevice *pmdev = PMBUS_DEVICE(smd); |
| PMBusDeviceClass *pmdc = PMBUS_DEVICE_GET_CLASS(pmdev); |
| uint8_t ret = PMBUS_ERR_BYTE; |
| uint8_t index; |
| |
| if (pmdev->out_buf_len != 0) { |
| ret = pmbus_out_buf_pop(pmdev); |
| return ret; |
| } |
| |
| /* |
| * Reading from all pages will return the value from page 0, |
| * this is unspecified behaviour in general. |
| */ |
| if (pmdev->page == PB_ALL_PAGES) { |
| index = 0; |
| qemu_log_mask(LOG_GUEST_ERROR, |
| "%s: tried to read from all pages\n", |
| __func__); |
| pmbus_cml_error(pmdev); |
| } else if (pmdev->page > pmdev->num_pages - 1) { |
| qemu_log_mask(LOG_GUEST_ERROR, |
| "%s: page %d is out of range\n", |
| __func__, pmdev->page); |
| pmbus_cml_error(pmdev); |
| return PMBUS_ERR_BYTE; |
| } else { |
| index = pmdev->page; |
| } |
| |
| switch (pmdev->code) { |
| case PMBUS_PAGE: |
| pmbus_send8(pmdev, pmdev->page); |
| break; |
| |
| case PMBUS_OPERATION: /* R/W byte */ |
| pmbus_send8(pmdev, pmdev->pages[index].operation); |
| break; |
| |
| case PMBUS_ON_OFF_CONFIG: /* R/W byte */ |
| pmbus_send8(pmdev, pmdev->pages[index].on_off_config); |
| break; |
| |
| case PMBUS_PHASE: /* R/W byte */ |
| pmbus_send8(pmdev, pmdev->pages[index].phase); |
| break; |
| |
| case PMBUS_WRITE_PROTECT: /* R/W byte */ |
| pmbus_send8(pmdev, pmdev->pages[index].write_protect); |
| break; |
| |
| case PMBUS_CAPABILITY: |
| pmbus_send8(pmdev, pmdev->capability); |
| if (pmdev->capability & BIT(7)) { |
| qemu_log_mask(LOG_UNIMP, |
| "%s: PEC is enabled but not yet supported.\n", |
| __func__); |
| } |
| break; |
| |
| case PMBUS_VOUT_MODE: /* R/W byte */ |
| if (pmdev->pages[index].page_flags & PB_HAS_VOUT_MODE) { |
| pmbus_send8(pmdev, pmdev->pages[index].vout_mode); |
| } else { |
| goto passthough; |
| } |
| break; |
| |
| case PMBUS_VOUT_COMMAND: /* R/W word */ |
| if (pmdev->pages[index].page_flags & PB_HAS_VOUT) { |
| pmbus_send16(pmdev, pmdev->pages[index].vout_command); |
| } else { |
| goto passthough; |
| } |
| break; |
| |
| case PMBUS_VOUT_TRIM: /* R/W word */ |
| if (pmdev->pages[index].page_flags & PB_HAS_VOUT) { |
| pmbus_send16(pmdev, pmdev->pages[index].vout_trim); |
| } else { |
| goto passthough; |
| } |
| break; |
| |
| case PMBUS_VOUT_CAL_OFFSET: /* R/W word */ |
| if (pmdev->pages[index].page_flags & PB_HAS_VOUT) { |
| pmbus_send16(pmdev, pmdev->pages[index].vout_cal_offset); |
| } else { |
| goto passthough; |
| } |
| break; |
| |
| case PMBUS_VOUT_MAX: /* R/W word */ |
| if (pmdev->pages[index].page_flags & PB_HAS_VOUT) { |
| pmbus_send16(pmdev, pmdev->pages[index].vout_max); |
| } else { |
| goto passthough; |
| } |
| break; |
| |
| case PMBUS_VOUT_MARGIN_HIGH: /* R/W word */ |
| if (pmdev->pages[index].page_flags & PB_HAS_VOUT_MARGIN) { |
| pmbus_send16(pmdev, pmdev->pages[index].vout_margin_high); |
| } else { |
| goto passthough; |
| } |
| break; |
| |
| case PMBUS_VOUT_MARGIN_LOW: /* R/W word */ |
| if (pmdev->pages[index].page_flags & PB_HAS_VOUT_MARGIN) { |
| pmbus_send16(pmdev, pmdev->pages[index].vout_margin_low); |
| } else { |
| goto passthough; |
| } |
| break; |
| |
| case PMBUS_VOUT_TRANSITION_RATE: /* R/W word */ |
| if (pmdev->pages[index].page_flags & PB_HAS_VOUT) { |
| pmbus_send16(pmdev, pmdev->pages[index].vout_transition_rate); |
| } else { |
| goto passthough; |
| } |
| break; |
| |
| case PMBUS_VOUT_DROOP: /* R/W word */ |
| if (pmdev->pages[index].page_flags & PB_HAS_VOUT) { |
| pmbus_send16(pmdev, pmdev->pages[index].vout_droop); |
| } else { |
| goto passthough; |
| } |
| break; |
| |
| case PMBUS_VOUT_SCALE_LOOP: /* R/W word */ |
| if (pmdev->pages[index].page_flags & PB_HAS_VOUT) { |
| pmbus_send16(pmdev, pmdev->pages[index].vout_scale_loop); |
| } else { |
| goto passthough; |
| } |
| break; |
| |
| case PMBUS_VOUT_SCALE_MONITOR: /* R/W word */ |
| if (pmdev->pages[index].page_flags & PB_HAS_VOUT) { |
| pmbus_send16(pmdev, pmdev->pages[index].vout_scale_monitor); |
| } else { |
| goto passthough; |
| } |
| break; |
| |
| case PMBUS_VOUT_MIN: /* R/W word */ |
| if (pmdev->pages[index].page_flags & PB_HAS_VOUT_RATING) { |
| pmbus_send16(pmdev, pmdev->pages[index].vout_min); |
| } else { |
| goto passthough; |
| } |
| break; |
| |
| /* TODO: implement coefficients support */ |
| |
| case PMBUS_POUT_MAX: /* R/W word */ |
| if (pmdev->pages[index].page_flags & PB_HAS_POUT) { |
| pmbus_send16(pmdev, pmdev->pages[index].pout_max); |
| } else { |
| goto passthough; |
| } |
| break; |
| |
| case PMBUS_VIN_ON: /* R/W word */ |
| if (pmdev->pages[index].page_flags & PB_HAS_VIN) { |
| pmbus_send16(pmdev, pmdev->pages[index].vin_on); |
| } else { |
| goto passthough; |
| } |
| break; |
| |
| case PMBUS_VIN_OFF: /* R/W word */ |
| if (pmdev->pages[index].page_flags & PB_HAS_VIN) { |
| pmbus_send16(pmdev, pmdev->pages[index].vin_off); |
| } else { |
| goto passthough; |
| } |
| break; |
| |
| case PMBUS_IOUT_CAL_GAIN: /* R/W word */ |
| if (pmdev->pages[index].page_flags & PB_HAS_IOUT_GAIN) { |
| pmbus_send16(pmdev, pmdev->pages[index].iout_cal_gain); |
| } else { |
| goto passthough; |
| } |
| break; |
| |
| case PMBUS_VOUT_OV_FAULT_LIMIT: /* R/W word */ |
| if (pmdev->pages[index].page_flags & PB_HAS_VOUT) { |
| pmbus_send16(pmdev, pmdev->pages[index].vout_ov_fault_limit); |
| } else { |
| goto passthough; |
| } |
| break; |
| |
| case PMBUS_VOUT_OV_FAULT_RESPONSE: /* R/W byte */ |
| if (pmdev->pages[index].page_flags & PB_HAS_VOUT) { |
| pmbus_send8(pmdev, pmdev->pages[index].vout_ov_fault_response); |
| } else { |
| goto passthough; |
| } |
| break; |
| |
| case PMBUS_VOUT_OV_WARN_LIMIT: /* R/W word */ |
| if (pmdev->pages[index].page_flags & PB_HAS_VOUT) { |
| pmbus_send16(pmdev, pmdev->pages[index].vout_ov_warn_limit); |
| } else { |
| goto passthough; |
| } |
| break; |
| |
| case PMBUS_VOUT_UV_WARN_LIMIT: /* R/W word */ |
| if (pmdev->pages[index].page_flags & PB_HAS_VOUT) { |
| pmbus_send16(pmdev, pmdev->pages[index].vout_uv_warn_limit); |
| } else { |
| goto passthough; |
| } |
| break; |
| |
| case PMBUS_VOUT_UV_FAULT_LIMIT: /* R/W word */ |
| if (pmdev->pages[index].page_flags & PB_HAS_VOUT) { |
| pmbus_send16(pmdev, pmdev->pages[index].vout_uv_fault_limit); |
| } else { |
| goto passthough; |
| } |
| break; |
| |
| case PMBUS_VOUT_UV_FAULT_RESPONSE: /* R/W byte */ |
| if (pmdev->pages[index].page_flags & PB_HAS_VOUT) { |
| pmbus_send8(pmdev, pmdev->pages[index].vout_uv_fault_response); |
| } else { |
| goto passthough; |
| } |
| break; |
| |
| case PMBUS_IOUT_OC_FAULT_LIMIT: /* R/W word */ |
| if (pmdev->pages[index].page_flags & PB_HAS_IOUT) { |
| pmbus_send16(pmdev, pmdev->pages[index].iout_oc_fault_limit); |
| } else { |
| goto passthough; |
| } |
| break; |
| |
| case PMBUS_IOUT_OC_FAULT_RESPONSE: /* R/W byte */ |
| if (pmdev->pages[index].page_flags & PB_HAS_IOUT) { |
| pmbus_send8(pmdev, pmdev->pages[index].iout_oc_fault_response); |
| } else { |
| goto passthough; |
| } |
| break; |
| |
| case PMBUS_IOUT_OC_LV_FAULT_LIMIT: /* R/W word */ |
| if (pmdev->pages[index].page_flags & PB_HAS_IOUT) { |
| pmbus_send16(pmdev, pmdev->pages[index].iout_oc_lv_fault_limit); |
| } else { |
| goto passthough; |
| } |
| break; |
| |
| case PMBUS_IOUT_OC_LV_FAULT_RESPONSE: /* R/W byte */ |
| if (pmdev->pages[index].page_flags & PB_HAS_IOUT) { |
| pmbus_send8(pmdev, pmdev->pages[index].iout_oc_lv_fault_response); |
| } else { |
| goto passthough; |
| } |
| break; |
| |
| case PMBUS_IOUT_OC_WARN_LIMIT: /* R/W word */ |
| if (pmdev->pages[index].page_flags & PB_HAS_IOUT) { |
| pmbus_send16(pmdev, pmdev->pages[index].iout_oc_warn_limit); |
| } else { |
| goto passthough; |
| } |
| break; |
| |
| case PMBUS_IOUT_UC_FAULT_LIMIT: /* R/W word */ |
| if (pmdev->pages[index].page_flags & PB_HAS_IOUT) { |
| pmbus_send16(pmdev, pmdev->pages[index].iout_uc_fault_limit); |
| } else { |
| goto passthough; |
| } |
| break; |
| |
| case PMBUS_IOUT_UC_FAULT_RESPONSE: /* R/W byte */ |
| if (pmdev->pages[index].page_flags & PB_HAS_IOUT) { |
| pmbus_send8(pmdev, pmdev->pages[index].iout_uc_fault_response); |
| } else { |
| goto passthough; |
| } |
| break; |
| |
| case PMBUS_OT_FAULT_LIMIT: /* R/W word */ |
| if (pmdev->pages[index].page_flags & PB_HAS_TEMPERATURE) { |
| pmbus_send16(pmdev, pmdev->pages[index].ot_fault_limit); |
| } else { |
| goto passthough; |
| } |
| break; |
| |
| case PMBUS_OT_FAULT_RESPONSE: /* R/W byte */ |
| if (pmdev->pages[index].page_flags & PB_HAS_TEMPERATURE) { |
| pmbus_send8(pmdev, pmdev->pages[index].ot_fault_response); |
| } else { |
| goto passthough; |
| } |
| break; |
| |
| case PMBUS_OT_WARN_LIMIT: /* R/W word */ |
| if (pmdev->pages[index].page_flags & PB_HAS_TEMPERATURE) { |
| pmbus_send16(pmdev, pmdev->pages[index].ot_warn_limit); |
| } else { |
| goto passthough; |
| } |
| break; |
| |
| case PMBUS_UT_WARN_LIMIT: /* R/W word */ |
| if (pmdev->pages[index].page_flags & PB_HAS_TEMPERATURE) { |
| pmbus_send16(pmdev, pmdev->pages[index].ut_warn_limit); |
| } else { |
| goto passthough; |
| } |
| break; |
| |
| case PMBUS_UT_FAULT_LIMIT: /* R/W word */ |
| if (pmdev->pages[index].page_flags & PB_HAS_TEMPERATURE) { |
| pmbus_send16(pmdev, pmdev->pages[index].ut_fault_limit); |
| } else { |
| goto passthough; |
| } |
| break; |
| |
| case PMBUS_UT_FAULT_RESPONSE: /* R/W byte */ |
| if (pmdev->pages[index].page_flags & PB_HAS_TEMPERATURE) { |
| pmbus_send8(pmdev, pmdev->pages[index].ut_fault_response); |
| } else { |
| goto passthough; |
| } |
| break; |
| |
| case PMBUS_VIN_OV_FAULT_LIMIT: /* R/W word */ |
| if (pmdev->pages[index].page_flags & PB_HAS_VIN) { |
| pmbus_send16(pmdev, pmdev->pages[index].vin_ov_fault_limit); |
| } else { |
| goto passthough; |
| } |
| break; |
| |
| case PMBUS_VIN_OV_FAULT_RESPONSE: /* R/W byte */ |
| if (pmdev->pages[index].page_flags & PB_HAS_VIN) { |
| pmbus_send8(pmdev, pmdev->pages[index].vin_ov_fault_response); |
| } else { |
| goto passthough; |
| } |
| break; |
| |
| case PMBUS_VIN_OV_WARN_LIMIT: /* R/W word */ |
| if (pmdev->pages[index].page_flags & PB_HAS_VIN) { |
| pmbus_send16(pmdev, pmdev->pages[index].vin_ov_warn_limit); |
| } else { |
| goto passthough; |
| } |
| break; |
| |
| case PMBUS_VIN_UV_WARN_LIMIT: /* R/W word */ |
| if (pmdev->pages[index].page_flags & PB_HAS_VIN) { |
| pmbus_send16(pmdev, pmdev->pages[index].vin_uv_warn_limit); |
| } else { |
| goto passthough; |
| } |
| break; |
| |
| case PMBUS_VIN_UV_FAULT_LIMIT: /* R/W word */ |
| if (pmdev->pages[index].page_flags & PB_HAS_VIN) { |
| pmbus_send16(pmdev, pmdev->pages[index].vin_uv_fault_limit); |
| } else { |
| goto passthough; |
| } |
| break; |
| |
| case PMBUS_VIN_UV_FAULT_RESPONSE: /* R/W byte */ |
| if (pmdev->pages[index].page_flags & PB_HAS_VIN) { |
| pmbus_send8(pmdev, pmdev->pages[index].vin_uv_fault_response); |
| } else { |
| goto passthough; |
| } |
| break; |
| |
| case PMBUS_IIN_OC_FAULT_LIMIT: /* R/W word */ |
| if (pmdev->pages[index].page_flags & PB_HAS_IIN) { |
| pmbus_send16(pmdev, pmdev->pages[index].iin_oc_fault_limit); |
| } else { |
| goto passthough; |
| } |
| break; |
| |
| case PMBUS_IIN_OC_FAULT_RESPONSE: /* R/W byte */ |
| if (pmdev->pages[index].page_flags & PB_HAS_IIN) { |
| pmbus_send8(pmdev, pmdev->pages[index].iin_oc_fault_response); |
| } else { |
| goto passthough; |
| } |
| break; |
| |
| case PMBUS_IIN_OC_WARN_LIMIT: /* R/W word */ |
| if (pmdev->pages[index].page_flags & PB_HAS_IIN) { |
| pmbus_send16(pmdev, pmdev->pages[index].iin_oc_warn_limit); |
| } else { |
| goto passthough; |
| } |
| break; |
| |
| case PMBUS_POUT_OP_FAULT_LIMIT: /* R/W word */ |
| if (pmdev->pages[index].page_flags & PB_HAS_POUT) { |
| pmbus_send16(pmdev, pmdev->pages[index].pout_op_fault_limit); |
| } else { |
| goto passthough; |
| } |
| break; |
| |
| case PMBUS_POUT_OP_FAULT_RESPONSE: /* R/W byte */ |
| if (pmdev->pages[index].page_flags & PB_HAS_POUT) { |
| pmbus_send8(pmdev, pmdev->pages[index].pout_op_fault_response); |
| } else { |
| goto passthough; |
| } |
| break; |
| |
| case PMBUS_POUT_OP_WARN_LIMIT: /* R/W word */ |
| if (pmdev->pages[index].page_flags & PB_HAS_POUT) { |
| pmbus_send16(pmdev, pmdev->pages[index].pout_op_warn_limit); |
| } else { |
| goto passthough; |
| } |
| break; |
| |
| case PMBUS_PIN_OP_WARN_LIMIT: /* R/W word */ |
| if (pmdev->pages[index].page_flags & PB_HAS_PIN) { |
| pmbus_send16(pmdev, pmdev->pages[index].pin_op_warn_limit); |
| } else { |
| goto passthough; |
| } |
| break; |
| |
| case PMBUS_STATUS_BYTE: /* R/W byte */ |
| pmbus_send8(pmdev, pmdev->pages[index].status_word & 0xFF); |
| break; |
| |
| case PMBUS_STATUS_WORD: /* R/W word */ |
| pmbus_send16(pmdev, pmdev->pages[index].status_word); |
| break; |
| |
| case PMBUS_STATUS_VOUT: /* R/W byte */ |
| if (pmdev->pages[index].page_flags & PB_HAS_VOUT) { |
| pmbus_send8(pmdev, pmdev->pages[index].status_vout); |
| } else { |
| goto passthough; |
| } |
| break; |
| |
| case PMBUS_STATUS_IOUT: /* R/W byte */ |
| if (pmdev->pages[index].page_flags & PB_HAS_IOUT) { |
| pmbus_send8(pmdev, pmdev->pages[index].status_iout); |
| } else { |
| goto passthough; |
| } |
| break; |
| |
| case PMBUS_STATUS_INPUT: /* R/W byte */ |
| if (pmdev->pages[index].page_flags & PB_HAS_VIN || |
| pmdev->pages[index].page_flags & PB_HAS_IIN || |
| pmdev->pages[index].page_flags & PB_HAS_PIN) { |
| pmbus_send8(pmdev, pmdev->pages[index].status_input); |
| } else { |
| goto passthough; |
| } |
| break; |
| |
| case PMBUS_STATUS_TEMPERATURE: /* R/W byte */ |
| if (pmdev->pages[index].page_flags & PB_HAS_TEMPERATURE) { |
| pmbus_send8(pmdev, pmdev->pages[index].status_temperature); |
| } else { |
| goto passthough; |
| } |
| break; |
| |
| case PMBUS_STATUS_CML: /* R/W byte */ |
| pmbus_send8(pmdev, pmdev->pages[index].status_cml); |
| break; |
| |
| case PMBUS_STATUS_OTHER: /* R/W byte */ |
| pmbus_send8(pmdev, pmdev->pages[index].status_other); |
| break; |
| |
| case PMBUS_STATUS_MFR_SPECIFIC: /* R/W byte */ |
| pmbus_send8(pmdev, pmdev->pages[index].status_mfr_specific); |
| break; |
| |
| case PMBUS_READ_EIN: /* Read-Only block 5 bytes */ |
| if (pmdev->pages[index].page_flags & PB_HAS_EIN) { |
| pmbus_send(pmdev, pmdev->pages[index].read_ein, 5); |
| } else { |
| goto passthough; |
| } |
| break; |
| |
| case PMBUS_READ_EOUT: /* Read-Only block 5 bytes */ |
| if (pmdev->pages[index].page_flags & PB_HAS_EOUT) { |
| pmbus_send(pmdev, pmdev->pages[index].read_eout, 5); |
| } else { |
| goto passthough; |
| } |
| break; |
| |
| case PMBUS_READ_VIN: /* Read-Only word */ |
| if (pmdev->pages[index].page_flags & PB_HAS_VIN) { |
| pmbus_send16(pmdev, pmdev->pages[index].read_vin); |
| } else { |
| goto passthough; |
| } |
| break; |
| |
| case PMBUS_READ_IIN: /* Read-Only word */ |
| if (pmdev->pages[index].page_flags & PB_HAS_IIN) { |
| pmbus_send16(pmdev, pmdev->pages[index].read_iin); |
| } else { |
| goto passthough; |
| } |
| break; |
| |
| case PMBUS_READ_VOUT: /* Read-Only word */ |
| if (pmdev->pages[index].page_flags & PB_HAS_VOUT) { |
| pmbus_send16(pmdev, pmdev->pages[index].read_vout); |
| } else { |
| goto passthough; |
| } |
| break; |
| |
| case PMBUS_READ_IOUT: /* Read-Only word */ |
| if (pmdev->pages[index].page_flags & PB_HAS_IOUT) { |
| pmbus_send16(pmdev, pmdev->pages[index].read_iout); |
| } else { |
| goto passthough; |
| } |
| break; |
| |
| case PMBUS_READ_TEMPERATURE_1: /* Read-Only word */ |
| if (pmdev->pages[index].page_flags & PB_HAS_TEMPERATURE) { |
| pmbus_send16(pmdev, pmdev->pages[index].read_temperature_1); |
| } else { |
| goto passthough; |
| } |
| break; |
| |
| case PMBUS_READ_TEMPERATURE_2: /* Read-Only word */ |
| if (pmdev->pages[index].page_flags & PB_HAS_TEMP2) { |
| pmbus_send16(pmdev, pmdev->pages[index].read_temperature_2); |
| } else { |
| goto passthough; |
| } |
| break; |
| |
| case PMBUS_READ_TEMPERATURE_3: /* Read-Only word */ |
| if (pmdev->pages[index].page_flags & PB_HAS_TEMP3) { |
| pmbus_send16(pmdev, pmdev->pages[index].read_temperature_3); |
| } else { |
| goto passthough; |
| } |
| break; |
| |
| case PMBUS_READ_POUT: /* Read-Only word */ |
| if (pmdev->pages[index].page_flags & PB_HAS_POUT) { |
| pmbus_send16(pmdev, pmdev->pages[index].read_pout); |
| } else { |
| goto passthough; |
| } |
| break; |
| |
| case PMBUS_READ_PIN: /* Read-Only word */ |
| if (pmdev->pages[index].page_flags & PB_HAS_PIN) { |
| pmbus_send16(pmdev, pmdev->pages[index].read_pin); |
| } else { |
| goto passthough; |
| } |
| break; |
| |
| case PMBUS_REVISION: /* Read-Only byte */ |
| pmbus_send8(pmdev, pmdev->pages[index].revision); |
| break; |
| |
| case PMBUS_MFR_ID: /* R/W block */ |
| if (pmdev->pages[index].page_flags & PB_HAS_MFR_INFO) { |
| pmbus_send_string(pmdev, pmdev->pages[index].mfr_id); |
| } else { |
| goto passthough; |
| } |
| break; |
| |
| case PMBUS_MFR_MODEL: /* R/W block */ |
| if (pmdev->pages[index].page_flags & PB_HAS_MFR_INFO) { |
| pmbus_send_string(pmdev, pmdev->pages[index].mfr_model); |
| } else { |
| goto passthough; |
| } |
| break; |
| |
| case PMBUS_MFR_REVISION: /* R/W block */ |
| if (pmdev->pages[index].page_flags & PB_HAS_MFR_INFO) { |
| pmbus_send_string(pmdev, pmdev->pages[index].mfr_revision); |
| } else { |
| goto passthough; |
| } |
| break; |
| |
| case PMBUS_MFR_LOCATION: /* R/W block */ |
| if (pmdev->pages[index].page_flags & PB_HAS_MFR_INFO) { |
| pmbus_send_string(pmdev, pmdev->pages[index].mfr_location); |
| } else { |
| goto passthough; |
| } |
| break; |
| |
| case PMBUS_MFR_VIN_MIN: /* Read-Only word */ |
| if (pmdev->pages[index].page_flags & PB_HAS_VIN_RATING) { |
| pmbus_send16(pmdev, pmdev->pages[index].mfr_vin_min); |
| } else { |
| goto passthough; |
| } |
| break; |
| |
| case PMBUS_MFR_VIN_MAX: /* Read-Only word */ |
| if (pmdev->pages[index].page_flags & PB_HAS_VIN_RATING) { |
| pmbus_send16(pmdev, pmdev->pages[index].mfr_vin_max); |
| } else { |
| goto passthough; |
| } |
| break; |
| |
| case PMBUS_MFR_IIN_MAX: /* Read-Only word */ |
| if (pmdev->pages[index].page_flags & PB_HAS_IIN_RATING) { |
| pmbus_send16(pmdev, pmdev->pages[index].mfr_iin_max); |
| } else { |
| goto passthough; |
| } |
| break; |
| |
| case PMBUS_MFR_PIN_MAX: /* Read-Only word */ |
| if (pmdev->pages[index].page_flags & PB_HAS_PIN_RATING) { |
| pmbus_send16(pmdev, pmdev->pages[index].mfr_pin_max); |
| } else { |
| goto passthough; |
| } |
| break; |
| |
| case PMBUS_MFR_VOUT_MIN: /* Read-Only word */ |
| if (pmdev->pages[index].page_flags & PB_HAS_VOUT_RATING) { |
| pmbus_send16(pmdev, pmdev->pages[index].mfr_vout_min); |
| } else { |
| goto passthough; |
| } |
| break; |
| |
| case PMBUS_MFR_VOUT_MAX: /* Read-Only word */ |
| if (pmdev->pages[index].page_flags & PB_HAS_VOUT_RATING) { |
| pmbus_send16(pmdev, pmdev->pages[index].mfr_vout_max); |
| } else { |
| goto passthough; |
| } |
| break; |
| |
| case PMBUS_MFR_IOUT_MAX: /* Read-Only word */ |
| if (pmdev->pages[index].page_flags & PB_HAS_IOUT_RATING) { |
| pmbus_send16(pmdev, pmdev->pages[index].mfr_iout_max); |
| } else { |
| goto passthough; |
| } |
| break; |
| |
| case PMBUS_MFR_POUT_MAX: /* Read-Only word */ |
| if (pmdev->pages[index].page_flags & PB_HAS_POUT_RATING) { |
| pmbus_send16(pmdev, pmdev->pages[index].mfr_pout_max); |
| } else { |
| goto passthough; |
| } |
| break; |
| |
| case PMBUS_MFR_MAX_TEMP_1: /* R/W word */ |
| if (pmdev->pages[index].page_flags & PB_HAS_TEMP_RATING) { |
| pmbus_send16(pmdev, pmdev->pages[index].mfr_max_temp_1); |
| } else { |
| goto passthough; |
| } |
| break; |
| |
| case PMBUS_MFR_MAX_TEMP_2: /* R/W word */ |
| if (pmdev->pages[index].page_flags & PB_HAS_TEMP_RATING) { |
| pmbus_send16(pmdev, pmdev->pages[index].mfr_max_temp_2); |
| } else { |
| goto passthough; |
| } |
| break; |
| |
| case PMBUS_MFR_MAX_TEMP_3: /* R/W word */ |
| if (pmdev->pages[index].page_flags & PB_HAS_TEMP_RATING) { |
| pmbus_send16(pmdev, pmdev->pages[index].mfr_max_temp_3); |
| } else { |
| goto passthough; |
| } |
| break; |
| |
| case PMBUS_CLEAR_FAULTS: /* Send Byte */ |
| case PMBUS_PAGE_PLUS_WRITE: /* Block Write-only */ |
| case PMBUS_STORE_DEFAULT_ALL: /* Send Byte */ |
| case PMBUS_RESTORE_DEFAULT_ALL: /* Send Byte */ |
| case PMBUS_STORE_DEFAULT_CODE: /* Write-only Byte */ |
| case PMBUS_RESTORE_DEFAULT_CODE: /* Write-only Byte */ |
| case PMBUS_STORE_USER_ALL: /* Send Byte */ |
| case PMBUS_RESTORE_USER_ALL: /* Send Byte */ |
| case PMBUS_STORE_USER_CODE: /* Write-only Byte */ |
| case PMBUS_RESTORE_USER_CODE: /* Write-only Byte */ |
| case PMBUS_QUERY: /* Write-Only */ |
| qemu_log_mask(LOG_GUEST_ERROR, |
| "%s: reading from write only register 0x%02x\n", |
| __func__, pmdev->code); |
| break; |
| |
| passthough: |
| default: |
| /* Pass through read request if not handled */ |
| if (pmdc->receive_byte) { |
| ret = pmdc->receive_byte(pmdev); |
| } |
| break; |
| } |
| |
| if (pmdev->out_buf_len != 0) { |
| ret = pmbus_out_buf_pop(pmdev); |
| return ret; |
| } |
| |
| return ret; |
| } |
| |
| /* |
| * PMBus clear faults command applies to all status registers, existing faults |
| * should separately get re-asserted. |
| */ |
| static void pmbus_clear_faults(PMBusDevice *pmdev) |
| { |
| for (uint8_t i = 0; i < pmdev->num_pages; i++) { |
| pmdev->pages[i].status_word = 0; |
| pmdev->pages[i].status_vout = 0; |
| pmdev->pages[i].status_iout = 0; |
| pmdev->pages[i].status_input = 0; |
| pmdev->pages[i].status_temperature = 0; |
| pmdev->pages[i].status_cml = 0; |
| pmdev->pages[i].status_other = 0; |
| pmdev->pages[i].status_mfr_specific = 0; |
| pmdev->pages[i].status_fans_1_2 = 0; |
| pmdev->pages[i].status_fans_3_4 = 0; |
| } |
| |
| } |
| |
| /* |
| * PMBus operation is used to turn On and Off PSUs |
| * Therefore, default value for the Operation should be PB_OP_ON or 0x80 |
| */ |
| static void pmbus_operation(PMBusDevice *pmdev) |
| { |
| uint8_t index = pmdev->page; |
| if ((pmdev->pages[index].operation & PB_OP_ON) == 0) { |
| pmdev->pages[index].read_vout = 0; |
| pmdev->pages[index].read_iout = 0; |
| pmdev->pages[index].read_pout = 0; |
| return; |
| } |
| |
| if (pmdev->pages[index].operation & (PB_OP_ON | PB_OP_MARGIN_HIGH)) { |
| pmdev->pages[index].read_vout = pmdev->pages[index].vout_margin_high; |
| } |
| |
| if (pmdev->pages[index].operation & (PB_OP_ON | PB_OP_MARGIN_LOW)) { |
| pmdev->pages[index].read_vout = pmdev->pages[index].vout_margin_low; |
| } |
| pmbus_check_limits(pmdev); |
| } |
| |
| static int pmbus_write_data(SMBusDevice *smd, uint8_t *buf, uint8_t len) |
| { |
| PMBusDevice *pmdev = PMBUS_DEVICE(smd); |
| PMBusDeviceClass *pmdc = PMBUS_DEVICE_GET_CLASS(pmdev); |
| int ret = 0; |
| uint8_t index; |
| |
| if (len == 0) { |
| qemu_log_mask(LOG_GUEST_ERROR, "%s: writing empty data\n", __func__); |
| return PMBUS_ERR_BYTE; |
| } |
| |
| if (!pmdev->pages) { /* allocate memory for pages on first use */ |
| pmbus_pages_alloc(pmdev); |
| } |
| |
| pmdev->in_buf_len = len; |
| pmdev->in_buf = buf; |
| |
| pmdev->code = buf[0]; /* PMBus command code */ |
| if (len == 1) { /* Single length writes are command codes only */ |
| return 0; |
| } |
| |
| if (pmdev->code == PMBUS_PAGE) { |
| pmdev->page = pmbus_receive8(pmdev); |
| return 0; |
| } |
| |
| /* loop through all the pages when 0xFF is received */ |
| if (pmdev->page == PB_ALL_PAGES) { |
| for (int i = 0; i < pmdev->num_pages; i++) { |
| pmdev->page = i; |
| pmbus_write_data(smd, buf, len); |
| } |
| pmdev->page = PB_ALL_PAGES; |
| return 0; |
| } |
| |
| if (pmdev->page > pmdev->num_pages - 1) { |
| qemu_log_mask(LOG_GUEST_ERROR, |
| "%s: page %u is out of range\n", |
| __func__, pmdev->page); |
| pmdev->page = 0; /* undefined behaviour - reset to page 0 */ |
| pmbus_cml_error(pmdev); |
| return PMBUS_ERR_BYTE; |
| } |
| |
| index = pmdev->page; |
| |
| switch (pmdev->code) { |
| case PMBUS_OPERATION: /* R/W byte */ |
| pmdev->pages[index].operation = pmbus_receive8(pmdev); |
| pmbus_operation(pmdev); |
| break; |
| |
| case PMBUS_ON_OFF_CONFIG: /* R/W byte */ |
| pmdev->pages[index].on_off_config = pmbus_receive8(pmdev); |
| break; |
| |
| case PMBUS_CLEAR_FAULTS: /* Send Byte */ |
| pmbus_clear_faults(pmdev); |
| break; |
| |
| case PMBUS_PHASE: /* R/W byte */ |
| pmdev->pages[index].phase = pmbus_receive8(pmdev); |
| break; |
| |
| case PMBUS_PAGE_PLUS_WRITE: /* Block Write-only */ |
| case PMBUS_WRITE_PROTECT: /* R/W byte */ |
| pmdev->pages[index].write_protect = pmbus_receive8(pmdev); |
| break; |
| |
| case PMBUS_VOUT_MODE: /* R/W byte */ |
| if (pmdev->pages[index].page_flags & PB_HAS_VOUT_MODE) { |
| pmdev->pages[index].vout_mode = pmbus_receive8(pmdev); |
| } else { |
| goto passthrough; |
| } |
| break; |
| |
| case PMBUS_VOUT_COMMAND: /* R/W word */ |
| if (pmdev->pages[index].page_flags & PB_HAS_VOUT) { |
| pmdev->pages[index].vout_command = pmbus_receive16(pmdev); |
| } else { |
| goto passthrough; |
| } |
| break; |
| |
| case PMBUS_VOUT_TRIM: /* R/W word */ |
| if (pmdev->pages[index].page_flags & PB_HAS_VOUT) { |
| pmdev->pages[index].vout_trim = pmbus_receive16(pmdev); |
| } else { |
| goto passthrough; |
| } |
| break; |
| |
| case PMBUS_VOUT_CAL_OFFSET: /* R/W word */ |
| if (pmdev->pages[index].page_flags & PB_HAS_VOUT) { |
| pmdev->pages[index].vout_cal_offset = pmbus_receive16(pmdev); |
| } else { |
| goto passthrough; |
| } |
| break; |
| |
| case PMBUS_VOUT_MAX: /* R/W word */ |
| if (pmdev->pages[index].page_flags & PB_HAS_VOUT) { |
| pmdev->pages[index].vout_max = pmbus_receive16(pmdev); |
| } else { |
| goto passthrough; |
| } |
| break; |
| |
| case PMBUS_VOUT_MARGIN_HIGH: /* R/W word */ |
| if (pmdev->pages[index].page_flags & PB_HAS_VOUT_MARGIN) { |
| pmdev->pages[index].vout_margin_high = pmbus_receive16(pmdev); |
| } else { |
| goto passthrough; |
| } |
| break; |
| |
| case PMBUS_VOUT_MARGIN_LOW: /* R/W word */ |
| if (pmdev->pages[index].page_flags & PB_HAS_VOUT_MARGIN) { |
| pmdev->pages[index].vout_margin_low = pmbus_receive16(pmdev); |
| } else { |
| goto passthrough; |
| } |
| break; |
| |
| case PMBUS_VOUT_TRANSITION_RATE: /* R/W word */ |
| if (pmdev->pages[index].page_flags & PB_HAS_VOUT) { |
| pmdev->pages[index].vout_transition_rate = pmbus_receive16(pmdev); |
| } else { |
| goto passthrough; |
| } |
| break; |
| |
| case PMBUS_VOUT_DROOP: /* R/W word */ |
| if (pmdev->pages[index].page_flags & PB_HAS_VOUT) { |
| pmdev->pages[index].vout_droop = pmbus_receive16(pmdev); |
| } else { |
| goto passthrough; |
| } |
| break; |
| |
| case PMBUS_VOUT_SCALE_LOOP: /* R/W word */ |
| if (pmdev->pages[index].page_flags & PB_HAS_VOUT) { |
| pmdev->pages[index].vout_scale_loop = pmbus_receive16(pmdev); |
| } else { |
| goto passthrough; |
| } |
| break; |
| |
| case PMBUS_VOUT_SCALE_MONITOR: /* R/W word */ |
| if (pmdev->pages[index].page_flags & PB_HAS_VOUT) { |
| pmdev->pages[index].vout_scale_monitor = pmbus_receive16(pmdev); |
| } else { |
| goto passthrough; |
| } |
| break; |
| |
| case PMBUS_VOUT_MIN: /* R/W word */ |
| if (pmdev->pages[index].page_flags & PB_HAS_VOUT_RATING) { |
| pmdev->pages[index].vout_min = pmbus_receive16(pmdev); |
| } else { |
| goto passthrough; |
| } |
| break; |
| |
| case PMBUS_POUT_MAX: /* R/W word */ |
| if (pmdev->pages[index].page_flags & PB_HAS_VOUT) { |
| pmdev->pages[index].pout_max = pmbus_receive16(pmdev); |
| } else { |
| goto passthrough; |
| } |
| break; |
| |
| case PMBUS_VIN_ON: /* R/W word */ |
| if (pmdev->pages[index].page_flags & PB_HAS_VIN) { |
| pmdev->pages[index].vin_on = pmbus_receive16(pmdev); |
| } else { |
| goto passthrough; |
| } |
| break; |
| |
| case PMBUS_VIN_OFF: /* R/W word */ |
| if (pmdev->pages[index].page_flags & PB_HAS_VIN) { |
| pmdev->pages[index].vin_off = pmbus_receive16(pmdev); |
| } else { |
| goto passthrough; |
| } |
| break; |
| |
| case PMBUS_IOUT_CAL_GAIN: /* R/W word */ |
| if (pmdev->pages[index].page_flags & PB_HAS_IOUT_GAIN) { |
| pmdev->pages[index].iout_cal_gain = pmbus_receive16(pmdev); |
| } else { |
| goto passthrough; |
| } |
| break; |
| |
| case PMBUS_VOUT_OV_FAULT_LIMIT: /* R/W word */ |
| if (pmdev->pages[index].page_flags & PB_HAS_VOUT) { |
| pmdev->pages[index].vout_ov_fault_limit = pmbus_receive16(pmdev); |
| } else { |
| goto passthrough; |
| } |
| break; |
| |
| case PMBUS_VOUT_OV_FAULT_RESPONSE: /* R/W byte */ |
| if (pmdev->pages[index].page_flags & PB_HAS_VOUT) { |
| pmdev->pages[index].vout_ov_fault_response = pmbus_receive8(pmdev); |
| } else { |
| goto passthrough; |
| } |
| break; |
| |
| case PMBUS_VOUT_OV_WARN_LIMIT: /* R/W word */ |
| if (pmdev->pages[index].page_flags & PB_HAS_VOUT) { |
| pmdev->pages[index].vout_ov_warn_limit = pmbus_receive16(pmdev); |
| } else { |
| goto passthrough; |
| } |
| break; |
| |
| case PMBUS_VOUT_UV_WARN_LIMIT: /* R/W word */ |
| if (pmdev->pages[index].page_flags & PB_HAS_VOUT) { |
| pmdev->pages[index].vout_uv_warn_limit = pmbus_receive16(pmdev); |
| } else { |
| goto passthrough; |
| } |
| break; |
| |
| case PMBUS_VOUT_UV_FAULT_LIMIT: /* R/W word */ |
| if (pmdev->pages[index].page_flags & PB_HAS_VOUT) { |
| pmdev->pages[index].vout_uv_fault_limit = pmbus_receive16(pmdev); |
| } else { |
| goto passthrough; |
| } |
| break; |
| |
| case PMBUS_VOUT_UV_FAULT_RESPONSE: /* R/W byte */ |
| if (pmdev->pages[index].page_flags & PB_HAS_VOUT) { |
| pmdev->pages[index].vout_uv_fault_response = pmbus_receive8(pmdev); |
| } else { |
| goto passthrough; |
| } |
| break; |
| |
| case PMBUS_IOUT_OC_FAULT_LIMIT: /* R/W word */ |
| if (pmdev->pages[index].page_flags & PB_HAS_IOUT) { |
| pmdev->pages[index].iout_oc_fault_limit = pmbus_receive16(pmdev); |
| } else { |
| goto passthrough; |
| } |
| break; |
| |
| case PMBUS_IOUT_OC_FAULT_RESPONSE: /* R/W byte */ |
| if (pmdev->pages[index].page_flags & PB_HAS_IOUT) { |
| pmdev->pages[index].iout_oc_fault_response = pmbus_receive8(pmdev); |
| } else { |
| goto passthrough; |
| } |
| break; |
| |
| case PMBUS_IOUT_OC_LV_FAULT_LIMIT: /* R/W word */ |
| if (pmdev->pages[index].page_flags & PB_HAS_IOUT) { |
| pmdev->pages[index].iout_oc_lv_fault_limit = pmbus_receive16(pmdev); |
| } else { |
| goto passthrough; |
| } |
| break; |
| |
| case PMBUS_IOUT_OC_LV_FAULT_RESPONSE: /* R/W byte */ |
| if (pmdev->pages[index].page_flags & PB_HAS_IOUT) { |
| pmdev->pages[index].iout_oc_lv_fault_response |
| = pmbus_receive8(pmdev); |
| } else { |
| goto passthrough; |
| } |
| break; |
| |
| case PMBUS_IOUT_OC_WARN_LIMIT: /* R/W word */ |
| if (pmdev->pages[index].page_flags & PB_HAS_IOUT) { |
| pmdev->pages[index].iout_oc_warn_limit = pmbus_receive16(pmdev); |
| } else { |
| goto passthrough; |
| } |
| break; |
| |
| case PMBUS_IOUT_UC_FAULT_LIMIT: /* R/W word */ |
| if (pmdev->pages[index].page_flags & PB_HAS_IOUT) { |
| pmdev->pages[index].iout_uc_fault_limit = pmbus_receive16(pmdev); |
| } else { |
| goto passthrough; |
| } |
| break; |
| |
| case PMBUS_IOUT_UC_FAULT_RESPONSE: /* R/W byte */ |
| if (pmdev->pages[index].page_flags & PB_HAS_IOUT) { |
| pmdev->pages[index].iout_uc_fault_response = pmbus_receive8(pmdev); |
| } else { |
| goto passthrough; |
| } |
| break; |
| |
| case PMBUS_OT_FAULT_LIMIT: /* R/W word */ |
| if (pmdev->pages[index].page_flags & PB_HAS_TEMPERATURE) { |
| pmdev->pages[index].ot_fault_limit = pmbus_receive16(pmdev); |
| } else { |
| goto passthrough; |
| } |
| break; |
| |
| case PMBUS_OT_FAULT_RESPONSE: /* R/W byte */ |
| if (pmdev->pages[index].page_flags & PB_HAS_TEMPERATURE) { |
| pmdev->pages[index].ot_fault_response = pmbus_receive8(pmdev); |
| } else { |
| goto passthrough; |
| } |
| break; |
| |
| case PMBUS_OT_WARN_LIMIT: /* R/W word */ |
| if (pmdev->pages[index].page_flags & PB_HAS_TEMPERATURE) { |
| pmdev->pages[index].ot_warn_limit = pmbus_receive16(pmdev); |
| } else { |
| goto passthrough; |
| } |
| break; |
| |
| case PMBUS_UT_WARN_LIMIT: /* R/W word */ |
| if (pmdev->pages[index].page_flags & PB_HAS_TEMPERATURE) { |
| pmdev->pages[index].ut_warn_limit = pmbus_receive16(pmdev); |
| } else { |
| goto passthrough; |
| } |
| break; |
| |
| case PMBUS_UT_FAULT_LIMIT: /* R/W word */ |
| if (pmdev->pages[index].page_flags & PB_HAS_TEMPERATURE) { |
| pmdev->pages[index].ut_fault_limit = pmbus_receive16(pmdev); |
| } else { |
| goto passthrough; |
| } |
| break; |
| |
| case PMBUS_UT_FAULT_RESPONSE: /* R/W byte */ |
| if (pmdev->pages[index].page_flags & PB_HAS_TEMPERATURE) { |
| pmdev->pages[index].ut_fault_response = pmbus_receive8(pmdev); |
| } else { |
| goto passthrough; |
| } |
| break; |
| |
| case PMBUS_VIN_OV_FAULT_LIMIT: /* R/W word */ |
| if (pmdev->pages[index].page_flags & PB_HAS_VIN) { |
| pmdev->pages[index].vin_ov_fault_limit = pmbus_receive16(pmdev); |
| } else { |
| goto passthrough; |
| } |
| break; |
| |
| case PMBUS_VIN_OV_FAULT_RESPONSE: /* R/W byte */ |
| if (pmdev->pages[index].page_flags & PB_HAS_VIN) { |
| pmdev->pages[index].vin_ov_fault_response = pmbus_receive8(pmdev); |
| } else { |
| goto passthrough; |
| } |
| break; |
| |
| case PMBUS_VIN_OV_WARN_LIMIT: /* R/W word */ |
| if (pmdev->pages[index].page_flags & PB_HAS_VIN) { |
| pmdev->pages[index].vin_ov_warn_limit = pmbus_receive16(pmdev); |
| } else { |
| goto passthrough; |
| } |
| break; |
| |
| case PMBUS_VIN_UV_WARN_LIMIT: /* R/W word */ |
| if (pmdev->pages[index].page_flags & PB_HAS_VIN) { |
| pmdev->pages[index].vin_uv_warn_limit = pmbus_receive16(pmdev); |
| } else { |
| goto passthrough; |
| } |
| break; |
| |
| case PMBUS_VIN_UV_FAULT_LIMIT: /* R/W word */ |
| if (pmdev->pages[index].page_flags & PB_HAS_VIN) { |
| pmdev->pages[index].vin_uv_fault_limit = pmbus_receive16(pmdev); |
| } else { |
| goto passthrough; |
| } |
| break; |
| |
| case PMBUS_VIN_UV_FAULT_RESPONSE: /* R/W byte */ |
| if (pmdev->pages[index].page_flags & PB_HAS_VIN) { |
| pmdev->pages[index].vin_uv_fault_response = pmbus_receive8(pmdev); |
| } else { |
| goto passthrough; |
| } |
| break; |
| |
| case PMBUS_IIN_OC_FAULT_LIMIT: /* R/W word */ |
| if (pmdev->pages[index].page_flags & PB_HAS_IIN) { |
| pmdev->pages[index].iin_oc_fault_limit = pmbus_receive16(pmdev); |
| } else { |
| goto passthrough; |
| } |
| break; |
| |
| case PMBUS_IIN_OC_FAULT_RESPONSE: /* R/W byte */ |
| if (pmdev->pages[index].page_flags & PB_HAS_IIN) { |
| pmdev->pages[index].iin_oc_fault_response = pmbus_receive8(pmdev); |
| } else { |
| goto passthrough; |
| } |
| break; |
| |
| case PMBUS_IIN_OC_WARN_LIMIT: /* R/W word */ |
| if (pmdev->pages[index].page_flags & PB_HAS_IIN) { |
| pmdev->pages[index].iin_oc_warn_limit = pmbus_receive16(pmdev); |
| } else { |
| goto passthrough; |
| } |
| break; |
| |
| case PMBUS_POUT_OP_FAULT_LIMIT: /* R/W word */ |
| if (pmdev->pages[index].page_flags & PB_HAS_VOUT) { |
| pmdev->pages[index].pout_op_fault_limit = pmbus_receive16(pmdev); |
| } else { |
| goto passthrough; |
| } |
| break; |
| |
| case PMBUS_POUT_OP_FAULT_RESPONSE: /* R/W byte */ |
| if (pmdev->pages[index].page_flags & PB_HAS_VOUT) { |
| pmdev->pages[index].pout_op_fault_response = pmbus_receive8(pmdev); |
| } else { |
| goto passthrough; |
| } |
| break; |
| |
| case PMBUS_POUT_OP_WARN_LIMIT: /* R/W word */ |
| if (pmdev->pages[index].page_flags & PB_HAS_VOUT) { |
| pmdev->pages[index].pout_op_warn_limit = pmbus_receive16(pmdev); |
| } else { |
| goto passthrough; |
| } |
| break; |
| |
| case PMBUS_PIN_OP_WARN_LIMIT: /* R/W word */ |
| if (pmdev->pages[index].page_flags & PB_HAS_PIN) { |
| pmdev->pages[index].pin_op_warn_limit = pmbus_receive16(pmdev); |
| } else { |
| goto passthrough; |
| } |
| break; |
| |
| case PMBUS_STATUS_BYTE: /* R/W byte */ |
| pmdev->pages[index].status_word = pmbus_receive8(pmdev); |
| break; |
| |
| case PMBUS_STATUS_WORD: /* R/W word */ |
| pmdev->pages[index].status_word = pmbus_receive16(pmdev); |
| break; |
| |
| case PMBUS_STATUS_VOUT: /* R/W byte */ |
| if (pmdev->pages[index].page_flags & PB_HAS_VOUT) { |
| pmdev->pages[index].status_vout = pmbus_receive8(pmdev); |
| } else { |
| goto passthrough; |
| } |
| break; |
| |
| case PMBUS_STATUS_IOUT: /* R/W byte */ |
| if (pmdev->pages[index].page_flags & PB_HAS_IOUT) { |
| pmdev->pages[index].status_iout = pmbus_receive8(pmdev); |
| } else { |
| goto passthrough; |
| } |
| break; |
| |
| case PMBUS_STATUS_INPUT: /* R/W byte */ |
| pmdev->pages[index].status_input = pmbus_receive8(pmdev); |
| break; |
| |
| case PMBUS_STATUS_TEMPERATURE: /* R/W byte */ |
| if (pmdev->pages[index].page_flags & PB_HAS_TEMPERATURE) { |
| pmdev->pages[index].status_temperature = pmbus_receive8(pmdev); |
| } else { |
| goto passthrough; |
| } |
| break; |
| |
| case PMBUS_STATUS_CML: /* R/W byte */ |
| pmdev->pages[index].status_cml = pmbus_receive8(pmdev); |
| break; |
| |
| case PMBUS_STATUS_OTHER: /* R/W byte */ |
| pmdev->pages[index].status_other = pmbus_receive8(pmdev); |
| break; |
| |
| case PMBUS_STATUS_MFR_SPECIFIC: /* R/W byte */ |
| pmdev->pages[index].status_mfr_specific = pmbus_receive8(pmdev); |
| break; |
| |
| case PMBUS_PAGE_PLUS_READ: /* Block Read-only */ |
| case PMBUS_CAPABILITY: /* Read-Only byte */ |
| case PMBUS_COEFFICIENTS: /* Read-only block 5 bytes */ |
| case PMBUS_READ_EIN: /* Read-Only block 5 bytes */ |
| case PMBUS_READ_EOUT: /* Read-Only block 5 bytes */ |
| case PMBUS_READ_VIN: /* Read-Only word */ |
| case PMBUS_READ_IIN: /* Read-Only word */ |
| case PMBUS_READ_VCAP: /* Read-Only word */ |
| case PMBUS_READ_VOUT: /* Read-Only word */ |
| case PMBUS_READ_IOUT: /* Read-Only word */ |
| case PMBUS_READ_TEMPERATURE_1: /* Read-Only word */ |
| case PMBUS_READ_TEMPERATURE_2: /* Read-Only word */ |
| case PMBUS_READ_TEMPERATURE_3: /* Read-Only word */ |
| case PMBUS_READ_FAN_SPEED_1: /* Read-Only word */ |
| case PMBUS_READ_FAN_SPEED_2: /* Read-Only word */ |
| case PMBUS_READ_FAN_SPEED_3: /* Read-Only word */ |
| case PMBUS_READ_FAN_SPEED_4: /* Read-Only word */ |
| case PMBUS_READ_DUTY_CYCLE: /* Read-Only word */ |
| case PMBUS_READ_FREQUENCY: /* Read-Only word */ |
| case PMBUS_READ_POUT: /* Read-Only word */ |
| case PMBUS_READ_PIN: /* Read-Only word */ |
| case PMBUS_REVISION: /* Read-Only byte */ |
| case PMBUS_APP_PROFILE_SUPPORT: /* Read-Only block-read */ |
| case PMBUS_MFR_VIN_MIN: /* Read-Only word */ |
| case PMBUS_MFR_VIN_MAX: /* Read-Only word */ |
| case PMBUS_MFR_IIN_MAX: /* Read-Only word */ |
| case PMBUS_MFR_PIN_MAX: /* Read-Only word */ |
| case PMBUS_MFR_VOUT_MIN: /* Read-Only word */ |
| case PMBUS_MFR_VOUT_MAX: /* Read-Only word */ |
| case PMBUS_MFR_IOUT_MAX: /* Read-Only word */ |
| case PMBUS_MFR_POUT_MAX: /* Read-Only word */ |
| case PMBUS_MFR_TAMBIENT_MAX: /* Read-Only word */ |
| case PMBUS_MFR_TAMBIENT_MIN: /* Read-Only word */ |
| case PMBUS_MFR_EFFICIENCY_LL: /* Read-Only block 14 bytes */ |
| case PMBUS_MFR_EFFICIENCY_HL: /* Read-Only block 14 bytes */ |
| case PMBUS_MFR_PIN_ACCURACY: /* Read-Only byte */ |
| case PMBUS_IC_DEVICE_ID: /* Read-Only block-read */ |
| case PMBUS_IC_DEVICE_REV: /* Read-Only block-read */ |
| qemu_log_mask(LOG_GUEST_ERROR, |
| "%s: writing to read-only register 0x%02x\n", |
| __func__, pmdev->code); |
| break; |
| |
| passthrough: |
| /* Unimplimented registers get passed to the device */ |
| default: |
| if (pmdc->write_data) { |
| ret = pmdc->write_data(pmdev, buf, len); |
| } |
| break; |
| } |
| pmbus_check_limits(pmdev); |
| pmdev->in_buf_len = 0; |
| return ret; |
| } |
| |
| int pmbus_page_config(PMBusDevice *pmdev, uint8_t index, uint64_t flags) |
| { |
| if (!pmdev->pages) { /* allocate memory for pages on first use */ |
| pmbus_pages_alloc(pmdev); |
| } |
| |
| /* The 0xFF page is special for commands applying to all pages */ |
| if (index == PB_ALL_PAGES) { |
| for (int i = 0; i < pmdev->num_pages; i++) { |
| pmdev->pages[i].page_flags = flags; |
| } |
| return 0; |
| } |
| |
| if (index > pmdev->num_pages - 1) { |
| qemu_log_mask(LOG_GUEST_ERROR, |
| "%s: index %u is out of range\n", |
| __func__, index); |
| return -1; |
| } |
| |
| pmdev->pages[index].page_flags = flags; |
| |
| return 0; |
| } |
| |
| /* TODO: include pmbus page info in vmstate */ |
| const VMStateDescription vmstate_pmbus_device = { |
| .name = TYPE_PMBUS_DEVICE, |
| .version_id = 0, |
| .minimum_version_id = 0, |
| .fields = (VMStateField[]) { |
| VMSTATE_SMBUS_DEVICE(smb, PMBusDevice), |
| VMSTATE_UINT8(num_pages, PMBusDevice), |
| VMSTATE_UINT8(code, PMBusDevice), |
| VMSTATE_UINT8(page, PMBusDevice), |
| VMSTATE_UINT8(capability, PMBusDevice), |
| VMSTATE_END_OF_LIST() |
| } |
| }; |
| |
| static void pmbus_device_finalize(Object *obj) |
| { |
| PMBusDevice *pmdev = PMBUS_DEVICE(obj); |
| g_free(pmdev->pages); |
| } |
| |
| static void pmbus_device_class_init(ObjectClass *klass, void *data) |
| { |
| SMBusDeviceClass *k = SMBUS_DEVICE_CLASS(klass); |
| |
| k->quick_cmd = pmbus_quick_cmd; |
| k->write_data = pmbus_write_data; |
| k->receive_byte = pmbus_receive_byte; |
| } |
| |
| static const TypeInfo pmbus_device_type_info = { |
| .name = TYPE_PMBUS_DEVICE, |
| .parent = TYPE_SMBUS_DEVICE, |
| .instance_size = sizeof(PMBusDevice), |
| .instance_finalize = pmbus_device_finalize, |
| .abstract = true, |
| .class_size = sizeof(PMBusDeviceClass), |
| .class_init = pmbus_device_class_init, |
| }; |
| |
| static void pmbus_device_register_types(void) |
| { |
| type_register_static(&pmbus_device_type_info); |
| } |
| |
| type_init(pmbus_device_register_types) |
