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qemu/hw/sensor/isl_pmbus_vr.c
Peter Delevoryas e51ae82571 hw/sensor: Add IC_DEVICE_ID to ISL voltage regulators 
This commit adds a passthrough for PMBUS_IC_DEVICE_ID to allow Renesas
voltage regulators to return the integrated circuit device ID if they
would like to.

The behavior is very device specific, so it hasn't been added to the
general PMBUS model. Additionally, if the device ID hasn't been set,
then the voltage regulator will respond with the error byte value.  The
guest error message will change slightly for IC_DEVICE_ID with this
commit.

Signed-off-by: Peter Delevoryas <pdel@fb.com>
Reviewed-by: Titus Rwantare <titusr@google.com>
Message-Id: <20220701000626.77395-3-me@pjd.dev>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
2022-07-14 16:24:38 +02:00

291 lines
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/*
* PMBus device for Renesas Digital Multiphase Voltage Regulators
*
* Copyright 2021 Google LLC
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "qemu/osdep.h"
#include "hw/sensor/isl_pmbus_vr.h"
#include "hw/qdev-properties.h"
#include "qapi/visitor.h"
#include "qemu/log.h"
#include "qemu/module.h"
static uint8_t isl_pmbus_vr_read_byte(PMBusDevice *pmdev)
{
ISLState *s = ISL69260(pmdev);
switch (pmdev->code) {
case PMBUS_IC_DEVICE_ID:
if (!s->ic_device_id_len) {
break;
}
pmbus_send(pmdev, s->ic_device_id, s->ic_device_id_len);
pmbus_idle(pmdev);
return 0;
}
qemu_log_mask(LOG_GUEST_ERROR,
"%s: reading from unsupported register: 0x%02x\n",
__func__, pmdev->code);
return PMBUS_ERR_BYTE;
}
static int isl_pmbus_vr_write_data(PMBusDevice *pmdev, const uint8_t *buf,
uint8_t len)
{
qemu_log_mask(LOG_GUEST_ERROR,
"%s: write to unsupported register: 0x%02x\n",
__func__, pmdev->code);
return PMBUS_ERR_BYTE;
}
/* TODO: Implement coefficients support in pmbus_device.c for qmp */
static void isl_pmbus_vr_get(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
visit_type_uint16(v, name, (uint16_t *)opaque, errp);
}
static void isl_pmbus_vr_set(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
PMBusDevice *pmdev = PMBUS_DEVICE(obj);
uint16_t *internal = opaque;
uint16_t value;
if (!visit_type_uint16(v, name, &value, errp)) {
return;
}
*internal = value;
pmbus_check_limits(pmdev);
}
static void isl_pmbus_vr_exit_reset(Object *obj)
{
PMBusDevice *pmdev = PMBUS_DEVICE(obj);
pmdev->page = 0;
pmdev->capability = ISL_CAPABILITY_DEFAULT;
for (int i = 0; i < pmdev->num_pages; i++) {
pmdev->pages[i].operation = ISL_OPERATION_DEFAULT;
pmdev->pages[i].on_off_config = ISL_ON_OFF_CONFIG_DEFAULT;
pmdev->pages[i].vout_mode = ISL_VOUT_MODE_DEFAULT;
pmdev->pages[i].vout_command = ISL_VOUT_COMMAND_DEFAULT;
pmdev->pages[i].vout_max = ISL_VOUT_MAX_DEFAULT;
pmdev->pages[i].vout_margin_high = ISL_VOUT_MARGIN_HIGH_DEFAULT;
pmdev->pages[i].vout_margin_low = ISL_VOUT_MARGIN_LOW_DEFAULT;
pmdev->pages[i].vout_transition_rate = ISL_VOUT_TRANSITION_RATE_DEFAULT;
pmdev->pages[i].vout_ov_fault_limit = ISL_VOUT_OV_FAULT_LIMIT_DEFAULT;
pmdev->pages[i].ot_fault_limit = ISL_OT_FAULT_LIMIT_DEFAULT;
pmdev->pages[i].ot_warn_limit = ISL_OT_WARN_LIMIT_DEFAULT;
pmdev->pages[i].vin_ov_warn_limit = ISL_VIN_OV_WARN_LIMIT_DEFAULT;
pmdev->pages[i].vin_uv_warn_limit = ISL_VIN_UV_WARN_LIMIT_DEFAULT;
pmdev->pages[i].iin_oc_fault_limit = ISL_IIN_OC_FAULT_LIMIT_DEFAULT;
pmdev->pages[i].ton_delay = ISL_TON_DELAY_DEFAULT;
pmdev->pages[i].ton_rise = ISL_TON_RISE_DEFAULT;
pmdev->pages[i].toff_fall = ISL_TOFF_FALL_DEFAULT;
pmdev->pages[i].revision = ISL_REVISION_DEFAULT;
pmdev->pages[i].read_vout = ISL_READ_VOUT_DEFAULT;
pmdev->pages[i].read_iout = ISL_READ_IOUT_DEFAULT;
pmdev->pages[i].read_pout = ISL_READ_POUT_DEFAULT;
pmdev->pages[i].read_vin = ISL_READ_VIN_DEFAULT;
pmdev->pages[i].read_iin = ISL_READ_IIN_DEFAULT;
pmdev->pages[i].read_pin = ISL_READ_PIN_DEFAULT;
pmdev->pages[i].read_temperature_1 = ISL_READ_TEMP_DEFAULT;
pmdev->pages[i].read_temperature_2 = ISL_READ_TEMP_DEFAULT;
pmdev->pages[i].read_temperature_3 = ISL_READ_TEMP_DEFAULT;
}
}
/* The raa228000 uses different direct mode coefficents from most isl devices */
static void raa228000_exit_reset(Object *obj)
{
PMBusDevice *pmdev = PMBUS_DEVICE(obj);
isl_pmbus_vr_exit_reset(obj);
pmdev->pages[0].read_iout = 0;
pmdev->pages[0].read_pout = 0;
pmdev->pages[0].read_vout = 0;
pmdev->pages[0].read_vin = 0;
pmdev->pages[0].read_iin = 0;
pmdev->pages[0].read_pin = 0;
pmdev->pages[0].read_temperature_1 = 0;
pmdev->pages[0].read_temperature_2 = 0;
pmdev->pages[0].read_temperature_3 = 0;
}
static void isl_pmbus_vr_add_props(Object *obj, uint64_t *flags, uint8_t pages)
{
PMBusDevice *pmdev = PMBUS_DEVICE(obj);
for (int i = 0; i < pages; i++) {
if (flags[i] & PB_HAS_VIN) {
object_property_add(obj, "vin[*]", "uint16",
isl_pmbus_vr_get,
isl_pmbus_vr_set,
NULL, &pmdev->pages[i].read_vin);
}
if (flags[i] & PB_HAS_VOUT) {
object_property_add(obj, "vout[*]", "uint16",
isl_pmbus_vr_get,
isl_pmbus_vr_set,
NULL, &pmdev->pages[i].read_vout);
}
if (flags[i] & PB_HAS_IIN) {
object_property_add(obj, "iin[*]", "uint16",
isl_pmbus_vr_get,
isl_pmbus_vr_set,
NULL, &pmdev->pages[i].read_iin);
}
if (flags[i] & PB_HAS_IOUT) {
object_property_add(obj, "iout[*]", "uint16",
isl_pmbus_vr_get,
isl_pmbus_vr_set,
NULL, &pmdev->pages[i].read_iout);
}
if (flags[i] & PB_HAS_PIN) {
object_property_add(obj, "pin[*]", "uint16",
isl_pmbus_vr_get,
isl_pmbus_vr_set,
NULL, &pmdev->pages[i].read_pin);
}
if (flags[i] & PB_HAS_POUT) {
object_property_add(obj, "pout[*]", "uint16",
isl_pmbus_vr_get,
isl_pmbus_vr_set,
NULL, &pmdev->pages[i].read_pout);
}
if (flags[i] & PB_HAS_TEMPERATURE) {
object_property_add(obj, "temp1[*]", "uint16",
isl_pmbus_vr_get,
isl_pmbus_vr_set,
NULL, &pmdev->pages[i].read_temperature_1);
}
if (flags[i] & PB_HAS_TEMP2) {
object_property_add(obj, "temp2[*]", "uint16",
isl_pmbus_vr_get,
isl_pmbus_vr_set,
NULL, &pmdev->pages[i].read_temperature_2);
}
if (flags[i] & PB_HAS_TEMP3) {
object_property_add(obj, "temp3[*]", "uint16",
isl_pmbus_vr_get,
isl_pmbus_vr_set,
NULL, &pmdev->pages[i].read_temperature_3);
}
}
}
static void raa22xx_init(Object *obj)
{
PMBusDevice *pmdev = PMBUS_DEVICE(obj);
uint64_t flags[2];
flags[0] = PB_HAS_VIN | PB_HAS_VOUT | PB_HAS_VOUT_MODE |
PB_HAS_VOUT_RATING | PB_HAS_VOUT_MARGIN | PB_HAS_IIN |
PB_HAS_IOUT | PB_HAS_PIN | PB_HAS_POUT | PB_HAS_TEMPERATURE |
PB_HAS_TEMP2 | PB_HAS_TEMP3 | PB_HAS_STATUS_MFR_SPECIFIC;
flags[1] = PB_HAS_IIN | PB_HAS_PIN | PB_HAS_TEMPERATURE | PB_HAS_TEMP3 |
PB_HAS_VOUT | PB_HAS_VOUT_MODE | PB_HAS_VOUT_MARGIN |
PB_HAS_VOUT_RATING | PB_HAS_IOUT | PB_HAS_POUT |
PB_HAS_STATUS_MFR_SPECIFIC;
pmbus_page_config(pmdev, 0, flags[0]);
pmbus_page_config(pmdev, 1, flags[1]);
isl_pmbus_vr_add_props(obj, flags, ARRAY_SIZE(flags));
}
static void raa228000_init(Object *obj)
{
PMBusDevice *pmdev = PMBUS_DEVICE(obj);
uint64_t flags[1];
flags[0] = PB_HAS_VIN | PB_HAS_VOUT | PB_HAS_VOUT_MODE |
PB_HAS_VOUT_RATING | PB_HAS_VOUT_MARGIN | PB_HAS_IIN |
PB_HAS_IOUT | PB_HAS_PIN | PB_HAS_POUT | PB_HAS_TEMPERATURE |
PB_HAS_TEMP2 | PB_HAS_TEMP3 | PB_HAS_STATUS_MFR_SPECIFIC;
pmbus_page_config(pmdev, 0, flags[0]);
isl_pmbus_vr_add_props(obj, flags, 1);
}
static void isl_pmbus_vr_class_init(ObjectClass *klass, void *data,
uint8_t pages)
{
PMBusDeviceClass *k = PMBUS_DEVICE_CLASS(klass);
k->write_data = isl_pmbus_vr_write_data;
k->receive_byte = isl_pmbus_vr_read_byte;
k->device_num_pages = pages;
}
static void isl69260_class_init(ObjectClass *klass, void *data)
{
ResettableClass *rc = RESETTABLE_CLASS(klass);
DeviceClass *dc = DEVICE_CLASS(klass);
dc->desc = "Renesas ISL69260 Digital Multiphase Voltage Regulator";
rc->phases.exit = isl_pmbus_vr_exit_reset;
isl_pmbus_vr_class_init(klass, data, 2);
}
static void raa228000_class_init(ObjectClass *klass, void *data)
{
ResettableClass *rc = RESETTABLE_CLASS(klass);
DeviceClass *dc = DEVICE_CLASS(klass);
dc->desc = "Renesas 228000 Digital Multiphase Voltage Regulator";
rc->phases.exit = raa228000_exit_reset;
isl_pmbus_vr_class_init(klass, data, 1);
}
static void raa229004_class_init(ObjectClass *klass, void *data)
{
ResettableClass *rc = RESETTABLE_CLASS(klass);
DeviceClass *dc = DEVICE_CLASS(klass);
dc->desc = "Renesas 229004 Digital Multiphase Voltage Regulator";
rc->phases.exit = isl_pmbus_vr_exit_reset;
isl_pmbus_vr_class_init(klass, data, 2);
}
static const TypeInfo isl69260_info = {
.name = TYPE_ISL69260,
.parent = TYPE_PMBUS_DEVICE,
.instance_size = sizeof(ISLState),
.instance_init = raa22xx_init,
.class_init = isl69260_class_init,
};
static const TypeInfo raa229004_info = {
.name = TYPE_RAA229004,
.parent = TYPE_PMBUS_DEVICE,
.instance_size = sizeof(ISLState),
.instance_init = raa22xx_init,
.class_init = raa229004_class_init,
};
static const TypeInfo raa228000_info = {
.name = TYPE_RAA228000,
.parent = TYPE_PMBUS_DEVICE,
.instance_size = sizeof(ISLState),
.instance_init = raa228000_init,
.class_init = raa228000_class_init,
};
static void isl_pmbus_vr_register_types(void)
{
type_register_static(&isl69260_info);
type_register_static(&raa228000_info);
type_register_static(&raa229004_info);
}
type_init(isl_pmbus_vr_register_types)
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