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- /*
- * PMBus wrapper over SMBus
- *
- * Copyright 2021 Google LLC
- *
- * SPDX-License-Identifier: GPL-2.0-or-later
- */
- #include "qemu/osdep.h"
- #include <math.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)
- {
- if (!data) {
- qemu_log_mask(LOG_GUEST_ERROR,
- "%s: %s: uninitialised read from 0x%02x\n",
- __func__, DEVICE(pmdev)->canonical_path, pmdev->code);
- return;
- }
- 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;
- }
- }
- }
- void pmbus_idle(PMBusDevice *pmdev)
- {
- pmdev->code = PMBUS_IDLE_STATE;
- }
- /* 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,
- * means that all subsequent commands are to be applied to all output.
- */
- if (pmdev->page == PB_ALL_PAGES) {
- index = 0;
- } 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_IDLE_STATE:
- pmbus_send8(pmdev, PMBUS_ERR_BYTE);
- 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)
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