d272d1410c
Signed-off-by: Peter Delevoryas <pdel@fb.com> Reviewed-by: Titus Rwantare <titusr@google.com> Message-Id: <20220701000626.77395-2-me@pjd.dev> Signed-off-by: Cédric Le Goater <clg@kaod.org>
1704 lines
54 KiB
C
1704 lines
54 KiB
C
/*
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* PMBus wrapper over SMBus
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*
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* Copyright 2021 Google LLC
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*
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* SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#include "qemu/osdep.h"
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#include <math.h>
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#include <string.h>
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#include "hw/i2c/pmbus_device.h"
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#include "migration/vmstate.h"
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#include "qemu/module.h"
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#include "qemu/log.h"
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uint16_t pmbus_data2direct_mode(PMBusCoefficients c, uint32_t value)
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{
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/* R is usually negative to fit large readings into 16 bits */
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uint16_t y = (c.m * value + c.b) * pow(10, c.R);
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return y;
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}
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uint32_t pmbus_direct_mode2data(PMBusCoefficients c, uint16_t value)
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{
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/* X = (Y * 10^-R - b) / m */
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uint32_t x = (value / pow(10, c.R) - c.b) / c.m;
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return x;
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}
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uint16_t pmbus_data2linear_mode(uint16_t value, int exp)
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{
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/* L = D * 2^(-e) */
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if (exp < 0) {
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return value << (-exp);
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}
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return value >> exp;
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}
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uint16_t pmbus_linear_mode2data(uint16_t value, int exp)
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{
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/* D = L * 2^e */
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if (exp < 0) {
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return value >> (-exp);
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}
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return value << exp;
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}
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void pmbus_send(PMBusDevice *pmdev, const uint8_t *data, uint16_t len)
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{
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if (pmdev->out_buf_len + len > SMBUS_DATA_MAX_LEN) {
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qemu_log_mask(LOG_GUEST_ERROR,
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"PMBus device tried to send too much data");
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len = 0;
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}
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for (int i = len - 1; i >= 0; i--) {
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pmdev->out_buf[i + pmdev->out_buf_len] = data[len - i - 1];
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}
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pmdev->out_buf_len += len;
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}
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/* Internal only, convert unsigned ints to the little endian bus */
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static void pmbus_send_uint(PMBusDevice *pmdev, uint64_t data, uint8_t size)
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{
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uint8_t bytes[8];
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g_assert(size <= 8);
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for (int i = 0; i < size; i++) {
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bytes[i] = data & 0xFF;
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data = data >> 8;
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}
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pmbus_send(pmdev, bytes, size);
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}
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void pmbus_send8(PMBusDevice *pmdev, uint8_t data)
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{
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pmbus_send_uint(pmdev, data, 1);
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}
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void pmbus_send16(PMBusDevice *pmdev, uint16_t data)
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{
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pmbus_send_uint(pmdev, data, 2);
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}
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void pmbus_send32(PMBusDevice *pmdev, uint32_t data)
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{
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pmbus_send_uint(pmdev, data, 4);
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}
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void pmbus_send64(PMBusDevice *pmdev, uint64_t data)
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{
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pmbus_send_uint(pmdev, data, 8);
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}
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void pmbus_send_string(PMBusDevice *pmdev, const char *data)
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{
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size_t len = strlen(data);
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g_assert(len > 0);
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g_assert(len + pmdev->out_buf_len < SMBUS_DATA_MAX_LEN);
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pmdev->out_buf[len + pmdev->out_buf_len] = len;
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for (int i = len - 1; i >= 0; i--) {
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pmdev->out_buf[i + pmdev->out_buf_len] = data[len - 1 - i];
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}
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pmdev->out_buf_len += len + 1;
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}
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static uint64_t pmbus_receive_uint(PMBusDevice *pmdev)
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{
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uint64_t ret = 0;
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/* Exclude command code from return value */
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pmdev->in_buf++;
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pmdev->in_buf_len--;
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for (int i = pmdev->in_buf_len - 1; i >= 0; i--) {
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ret = ret << 8 | pmdev->in_buf[i];
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}
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return ret;
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}
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uint8_t pmbus_receive8(PMBusDevice *pmdev)
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{
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if (pmdev->in_buf_len - 1 != 1) {
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qemu_log_mask(LOG_GUEST_ERROR,
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"%s: length mismatch. Expected 1 byte, got %d bytes\n",
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__func__, pmdev->in_buf_len - 1);
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}
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return pmbus_receive_uint(pmdev);
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}
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uint16_t pmbus_receive16(PMBusDevice *pmdev)
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{
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if (pmdev->in_buf_len - 1 != 2) {
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qemu_log_mask(LOG_GUEST_ERROR,
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"%s: length mismatch. Expected 2 bytes, got %d bytes\n",
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__func__, pmdev->in_buf_len - 1);
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}
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return pmbus_receive_uint(pmdev);
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}
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uint32_t pmbus_receive32(PMBusDevice *pmdev)
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{
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if (pmdev->in_buf_len - 1 != 4) {
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qemu_log_mask(LOG_GUEST_ERROR,
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"%s: length mismatch. Expected 4 bytes, got %d bytes\n",
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__func__, pmdev->in_buf_len - 1);
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}
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return pmbus_receive_uint(pmdev);
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}
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uint64_t pmbus_receive64(PMBusDevice *pmdev)
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{
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if (pmdev->in_buf_len - 1 != 8) {
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qemu_log_mask(LOG_GUEST_ERROR,
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"%s: length mismatch. Expected 8 bytes, got %d bytes\n",
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__func__, pmdev->in_buf_len - 1);
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}
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return pmbus_receive_uint(pmdev);
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}
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static uint8_t pmbus_out_buf_pop(PMBusDevice *pmdev)
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{
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if (pmdev->out_buf_len == 0) {
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qemu_log_mask(LOG_GUEST_ERROR,
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"%s: tried to read from empty buffer",
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__func__);
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return PMBUS_ERR_BYTE;
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}
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uint8_t data = pmdev->out_buf[pmdev->out_buf_len - 1];
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pmdev->out_buf_len--;
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return data;
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}
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static void pmbus_quick_cmd(SMBusDevice *smd, uint8_t read)
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{
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PMBusDevice *pmdev = PMBUS_DEVICE(smd);
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PMBusDeviceClass *pmdc = PMBUS_DEVICE_GET_CLASS(pmdev);
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if (pmdc->quick_cmd) {
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pmdc->quick_cmd(pmdev, read);
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}
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}
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static void pmbus_pages_alloc(PMBusDevice *pmdev)
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{
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/* some PMBus devices don't use the PAGE command, so they get 1 page */
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PMBusDeviceClass *k = PMBUS_DEVICE_GET_CLASS(pmdev);
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if (k->device_num_pages == 0) {
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k->device_num_pages = 1;
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}
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pmdev->num_pages = k->device_num_pages;
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pmdev->pages = g_new0(PMBusPage, k->device_num_pages);
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}
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void pmbus_check_limits(PMBusDevice *pmdev)
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{
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for (int i = 0; i < pmdev->num_pages; i++) {
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if ((pmdev->pages[i].operation & PB_OP_ON) == 0) {
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continue; /* don't check powered off devices */
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}
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if (pmdev->pages[i].read_vout > pmdev->pages[i].vout_ov_fault_limit) {
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pmdev->pages[i].status_word |= PB_STATUS_VOUT;
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pmdev->pages[i].status_vout |= PB_STATUS_VOUT_OV_FAULT;
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}
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if (pmdev->pages[i].read_vout > pmdev->pages[i].vout_ov_warn_limit) {
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pmdev->pages[i].status_word |= PB_STATUS_VOUT;
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pmdev->pages[i].status_vout |= PB_STATUS_VOUT_OV_WARN;
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}
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if (pmdev->pages[i].read_vout < pmdev->pages[i].vout_uv_warn_limit) {
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pmdev->pages[i].status_word |= PB_STATUS_VOUT;
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pmdev->pages[i].status_vout |= PB_STATUS_VOUT_UV_WARN;
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}
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if (pmdev->pages[i].read_vout < pmdev->pages[i].vout_uv_fault_limit) {
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pmdev->pages[i].status_word |= PB_STATUS_VOUT;
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pmdev->pages[i].status_vout |= PB_STATUS_VOUT_UV_FAULT;
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}
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if (pmdev->pages[i].read_vin > pmdev->pages[i].vin_ov_warn_limit) {
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pmdev->pages[i].status_word |= PB_STATUS_INPUT;
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pmdev->pages[i].status_input |= PB_STATUS_INPUT_VIN_OV_WARN;
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}
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if (pmdev->pages[i].read_vin < pmdev->pages[i].vin_uv_warn_limit) {
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pmdev->pages[i].status_word |= PB_STATUS_INPUT;
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pmdev->pages[i].status_input |= PB_STATUS_INPUT_VIN_UV_WARN;
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}
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if (pmdev->pages[i].read_iout > pmdev->pages[i].iout_oc_warn_limit) {
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pmdev->pages[i].status_word |= PB_STATUS_IOUT_POUT;
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pmdev->pages[i].status_iout |= PB_STATUS_IOUT_OC_WARN;
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}
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if (pmdev->pages[i].read_iout > pmdev->pages[i].iout_oc_fault_limit) {
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pmdev->pages[i].status_word |= PB_STATUS_IOUT_POUT;
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pmdev->pages[i].status_iout |= PB_STATUS_IOUT_OC_FAULT;
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}
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if (pmdev->pages[i].read_pin > pmdev->pages[i].pin_op_warn_limit) {
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pmdev->pages[i].status_word |= PB_STATUS_INPUT;
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pmdev->pages[i].status_input |= PB_STATUS_INPUT_PIN_OP_WARN;
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}
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if (pmdev->pages[i].read_temperature_1
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> pmdev->pages[i].ot_fault_limit) {
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pmdev->pages[i].status_word |= PB_STATUS_TEMPERATURE;
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pmdev->pages[i].status_temperature |= PB_STATUS_OT_FAULT;
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}
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if (pmdev->pages[i].read_temperature_1
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> pmdev->pages[i].ot_warn_limit) {
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pmdev->pages[i].status_word |= PB_STATUS_TEMPERATURE;
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pmdev->pages[i].status_temperature |= PB_STATUS_OT_WARN;
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}
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}
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}
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void pmbus_idle(PMBusDevice *pmdev)
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{
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pmdev->code = PMBUS_IDLE_STATE;
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}
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/* assert the status_cml error upon receipt of malformed command */
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static void pmbus_cml_error(PMBusDevice *pmdev)
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{
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for (int i = 0; i < pmdev->num_pages; i++) {
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pmdev->pages[i].status_word |= PMBUS_STATUS_CML;
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pmdev->pages[i].status_cml |= PB_CML_FAULT_INVALID_CMD;
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}
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}
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static uint8_t pmbus_receive_byte(SMBusDevice *smd)
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{
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PMBusDevice *pmdev = PMBUS_DEVICE(smd);
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PMBusDeviceClass *pmdc = PMBUS_DEVICE_GET_CLASS(pmdev);
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uint8_t ret = PMBUS_ERR_BYTE;
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uint8_t index;
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if (pmdev->out_buf_len != 0) {
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ret = pmbus_out_buf_pop(pmdev);
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return ret;
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}
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/*
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* Reading from all pages will return the value from page 0,
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* means that all subsequent commands are to be applied to all output.
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*/
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if (pmdev->page == PB_ALL_PAGES) {
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index = 0;
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} else if (pmdev->page > pmdev->num_pages - 1) {
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qemu_log_mask(LOG_GUEST_ERROR,
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"%s: page %d is out of range\n",
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__func__, pmdev->page);
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pmbus_cml_error(pmdev);
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return PMBUS_ERR_BYTE;
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} else {
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index = pmdev->page;
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}
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switch (pmdev->code) {
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case PMBUS_PAGE:
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pmbus_send8(pmdev, pmdev->page);
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break;
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case PMBUS_OPERATION: /* R/W byte */
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pmbus_send8(pmdev, pmdev->pages[index].operation);
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break;
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case PMBUS_ON_OFF_CONFIG: /* R/W byte */
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pmbus_send8(pmdev, pmdev->pages[index].on_off_config);
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break;
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case PMBUS_PHASE: /* R/W byte */
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pmbus_send8(pmdev, pmdev->pages[index].phase);
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break;
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case PMBUS_WRITE_PROTECT: /* R/W byte */
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pmbus_send8(pmdev, pmdev->pages[index].write_protect);
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break;
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case PMBUS_CAPABILITY:
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pmbus_send8(pmdev, pmdev->capability);
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if (pmdev->capability & BIT(7)) {
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qemu_log_mask(LOG_UNIMP,
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"%s: PEC is enabled but not yet supported.\n",
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__func__);
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}
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break;
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case PMBUS_VOUT_MODE: /* R/W byte */
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if (pmdev->pages[index].page_flags & PB_HAS_VOUT_MODE) {
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pmbus_send8(pmdev, pmdev->pages[index].vout_mode);
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} else {
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goto passthough;
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}
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break;
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case PMBUS_VOUT_COMMAND: /* R/W word */
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if (pmdev->pages[index].page_flags & PB_HAS_VOUT) {
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pmbus_send16(pmdev, pmdev->pages[index].vout_command);
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} else {
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goto passthough;
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}
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break;
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case PMBUS_VOUT_TRIM: /* R/W word */
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if (pmdev->pages[index].page_flags & PB_HAS_VOUT) {
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pmbus_send16(pmdev, pmdev->pages[index].vout_trim);
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} else {
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goto passthough;
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}
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break;
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case PMBUS_VOUT_CAL_OFFSET: /* R/W word */
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if (pmdev->pages[index].page_flags & PB_HAS_VOUT) {
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pmbus_send16(pmdev, pmdev->pages[index].vout_cal_offset);
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} else {
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goto passthough;
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}
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break;
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case PMBUS_VOUT_MAX: /* R/W word */
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if (pmdev->pages[index].page_flags & PB_HAS_VOUT) {
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pmbus_send16(pmdev, pmdev->pages[index].vout_max);
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} else {
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goto passthough;
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}
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break;
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case PMBUS_VOUT_MARGIN_HIGH: /* R/W word */
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if (pmdev->pages[index].page_flags & PB_HAS_VOUT_MARGIN) {
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pmbus_send16(pmdev, pmdev->pages[index].vout_margin_high);
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} else {
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goto passthough;
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}
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break;
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case PMBUS_VOUT_MARGIN_LOW: /* R/W word */
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if (pmdev->pages[index].page_flags & PB_HAS_VOUT_MARGIN) {
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pmbus_send16(pmdev, pmdev->pages[index].vout_margin_low);
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} else {
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goto passthough;
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}
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break;
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case PMBUS_VOUT_TRANSITION_RATE: /* R/W word */
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if (pmdev->pages[index].page_flags & PB_HAS_VOUT) {
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pmbus_send16(pmdev, pmdev->pages[index].vout_transition_rate);
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} else {
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goto passthough;
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}
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break;
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case PMBUS_VOUT_DROOP: /* R/W word */
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if (pmdev->pages[index].page_flags & PB_HAS_VOUT) {
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pmbus_send16(pmdev, pmdev->pages[index].vout_droop);
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} else {
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goto passthough;
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}
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break;
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case PMBUS_VOUT_SCALE_LOOP: /* R/W word */
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if (pmdev->pages[index].page_flags & PB_HAS_VOUT) {
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pmbus_send16(pmdev, pmdev->pages[index].vout_scale_loop);
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} else {
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goto passthough;
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}
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break;
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case PMBUS_VOUT_SCALE_MONITOR: /* R/W word */
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if (pmdev->pages[index].page_flags & PB_HAS_VOUT) {
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pmbus_send16(pmdev, pmdev->pages[index].vout_scale_monitor);
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} else {
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goto passthough;
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}
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break;
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|
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case PMBUS_VOUT_MIN: /* R/W word */
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if (pmdev->pages[index].page_flags & PB_HAS_VOUT_RATING) {
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pmbus_send16(pmdev, pmdev->pages[index].vout_min);
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} else {
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goto passthough;
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}
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break;
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|
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/* TODO: implement coefficients support */
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|
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case PMBUS_POUT_MAX: /* R/W word */
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if (pmdev->pages[index].page_flags & PB_HAS_POUT) {
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pmbus_send16(pmdev, pmdev->pages[index].pout_max);
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} else {
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goto passthough;
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}
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break;
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case PMBUS_VIN_ON: /* R/W word */
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if (pmdev->pages[index].page_flags & PB_HAS_VIN) {
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pmbus_send16(pmdev, pmdev->pages[index].vin_on);
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} else {
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goto passthough;
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}
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break;
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case PMBUS_VIN_OFF: /* R/W word */
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if (pmdev->pages[index].page_flags & PB_HAS_VIN) {
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pmbus_send16(pmdev, pmdev->pages[index].vin_off);
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} else {
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goto passthough;
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}
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break;
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|
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case PMBUS_IOUT_CAL_GAIN: /* R/W word */
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if (pmdev->pages[index].page_flags & PB_HAS_IOUT_GAIN) {
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pmbus_send16(pmdev, pmdev->pages[index].iout_cal_gain);
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} else {
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goto passthough;
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}
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break;
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|
|
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case PMBUS_VOUT_OV_FAULT_LIMIT: /* R/W word */
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if (pmdev->pages[index].page_flags & PB_HAS_VOUT) {
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pmbus_send16(pmdev, pmdev->pages[index].vout_ov_fault_limit);
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} else {
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goto passthough;
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}
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break;
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|
|
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)
|