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b=ZAHQe4LzFGe61qoFb/0+6JnjU9czDIliatc0yzYjWssGsiznLf8Z7MpEiQKA1FZ6da Oga3kFaLC1qwyXe1ajb+ZgWd33K3u6oyJivZ/CW3+pbjPmyRNCjzAobDZiw+BfTzeOof EJLUqWus5ahEEfWPristWJ446XsH0brs78J/JEXrhnbD98Xs3VSyAhRwMGdU3DC2dkNN kRuWbuHHkFdzzFWXHy+yn24CqHKif/IZPZDa+TKjJacu3h6cVC3XlWmwlbf5OrH7FDIA WPVxx/hpxoNR+dTrr3sYYeqwHPc8THRj2Jt/3WXRO//JRoGPLkIAj5pezwA+rjDBzw7r ry4g== X-Gm-Message-State: AOAM5307aNq1lO7np7oi90HFbLr74qqyZ75fclJSQL4OFacbm+G5h3an 8uJbMpO79V95WNAsVAFSy9xrqwqKInk= X-Google-Smtp-Source: ABdhPJzzMC4X5m3Ivo+IdWzWKb6qe9avMaWFLm4Fex8EuhFlsK6UebeK+9GuGZWarDn19HCqgWzMcX1kppQ= X-Received: from titusr.svl.corp.google.com ([2620:15c:2c5:13:4bf9:75f4:b656:df26]) (user=titusr job=sendgmr) by 2002:a0c:a909:: with SMTP id y9mr7270848qva.20.1621363541254; Tue, 18 May 2021 11:45:41 -0700 (PDT) Date: Tue, 18 May 2021 11:45:26 -0700 In-Reply-To: <20210518184527.1037888-1-titusr@google.com> Message-Id: <20210518184527.1037888-5-titusr@google.com> Mime-Version: 1.0 References: <20210518184527.1037888-1-titusr@google.com> X-Mailer: git-send-email 2.31.1.751.gd2f1c929bd-goog Subject: [PATCH v3 4/5] hw/misc: add MAX34451 device From: Titus Rwantare To: Corey Minyard Cc: qemu-arm@nongnu.org, qemu-devel@nongnu.org, f4bug@amsat.org, Titus Rwantare , Joel Stanley , Hao Wu Received-SPF: pass client-ip=2607:f8b0:4864:20::749; envelope-from=3VQukYAYKCgg1q120zowwotm.kwuymu2-lm3mtvwvov2.wzo@flex--titusr.bounces.google.com; helo=mail-qk1-x749.google.com X-Spam_score_int: -95 X-Spam_score: -9.6 X-Spam_bar: --------- X-Spam_report: (-9.6 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_MED=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, USER_IN_DEF_DKIM_WL=-7.5 autolearn=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" The MAX34451 is a Maxim power-supply system manager that can monitor up to 16 voltage rails or currents. It also contains a temperature sensor and supports up to four external temperature sensors. This commit adds support for interfacing with it, and setting limits on the supported sensors. Reviewed-by: Joel Stanley Reviewed-by: Hao Wu Signed-off-by: Titus Rwantare --- hw/misc/max34451.c | 716 ++++++++++++++++++++++++++++++++++++++++++++ hw/arm/Kconfig | 1 + hw/misc/Kconfig | 4 + hw/misc/meson.build | 1 + 4 files changed, 722 insertions(+) create mode 100644 hw/misc/max34451.c diff --git a/hw/misc/max34451.c b/hw/misc/max34451.c new file mode 100644 index 0000000000..5dd47a49f5 --- /dev/null +++ b/hw/misc/max34451.c @@ -0,0 +1,716 @@ +/* + * Maxim MAX34451 PMBus 16-Channel V/I monitor and 12-Channel Sequencer/Marginer + * + * Copyright 2021 Google LLC + * + * SPDX-License-Identifier: GPL-2.0-or-later + */ + +#include "qemu/osdep.h" +#include "hw/i2c/pmbus_device.h" +#include "hw/irq.h" +#include "qapi/error.h" +#include "qapi/visitor.h" +#include "qemu/log.h" +#include "qemu/module.h" + +#define TYPE_MAX34451 "max34451" +#define MAX34451(obj) OBJECT_CHECK(MAX34451State, (obj), TYPE_MAX34451) + +#define MAX34451_MFR_MODE 0xD1 +#define MAX34451_MFR_PSEN_CONFIG 0xD2 +#define MAX34451_MFR_VOUT_PEAK 0xD4 +#define MAX34451_MFR_IOUT_PEAK 0xD5 +#define MAX34451_MFR_TEMPERATURE_PEAK 0xD6 +#define MAX34451_MFR_VOUT_MIN 0xD7 +#define MAX34451_MFR_NV_LOG_CONFIG 0xD8 +#define MAX34451_MFR_FAULT_RESPONSE 0xD9 +#define MAX34451_MFR_FAULT_RETRY 0xDA +#define MAX34451_MFR_NV_FAULT_LOG 0xDC +#define MAX34451_MFR_TIME_COUNT 0xDD +#define MAX34451_MFR_MARGIN_CONFIG 0xDF +#define MAX34451_MFR_FW_SERIAL 0xE0 +#define MAX34451_MFR_IOUT_AVG 0xE2 +#define MAX34451_MFR_CHANNEL_CONFIG 0xE4 +#define MAX34451_MFR_TON_SEQ_MAX 0xE6 +#define MAX34451_MFR_PWM_CONFIG 0xE7 +#define MAX34451_MFR_SEQ_CONFIG 0xE8 +#define MAX34451_MFR_STORE_ALL 0xEE +#define MAX34451_MFR_RESTORE_ALL 0xEF +#define MAX34451_MFR_TEMP_SENSOR_CONFIG 0xF0 +#define MAX34451_MFR_STORE_SINGLE 0xFC +#define MAX34451_MFR_CRC 0xFE + +#define MAX34451_NUM_MARGINED_PSU 12 +#define MAX34451_NUM_PWR_DEVICES 16 +#define MAX34451_NUM_TEMP_DEVICES 5 +#define MAX34451_NUM_PAGES 21 + +#define DEFAULT_OP_ON 0x80 +#define DEFAULT_CAPABILITY 0x20 +#define DEFAULT_ON_OFF_CONFIG 0x1a +#define DEFAULT_VOUT_MODE 0x40 +#define DEFAULT_TEMPERATURE 2500 +#define DEFAULT_SCALE 0x7FFF +#define DEFAULT_OV_LIMIT 0x7FFF +#define DEFAULT_OC_LIMIT 0x7FFF +#define DEFAULT_OT_LIMIT 0x7FFF +#define DEFAULT_VMIN 0x7FFF +#define DEFAULT_TON_FAULT_LIMIT 0xFFFF +#define DEFAULT_CHANNEL_CONFIG 0x20 +#define DEFAULT_TEXT 0x3130313031303130 + +/** + * MAX34451State: + * @code: The command code received + * @page: Each page corresponds to a device monitored by the Max 34451 + * The page register determines the available commands depending on device + ___________________________________________________________________________ + | 0 | Power supply monitored by RS0, controlled by PSEN0, and | + | | margined with PWM0. | + |_______|___________________________________________________________________| + | 1 | Power supply monitored by RS1, controlled by PSEN1, and | + | | margined with PWM1. | + |_______|___________________________________________________________________| + | 2 | Power supply monitored by RS2, controlled by PSEN2, and | + | | margined with PWM2. | + |_______|___________________________________________________________________| + | 3 | Power supply monitored by RS3, controlled by PSEN3, and | + | | margined with PWM3. | + |_______|___________________________________________________________________| + | 4 | Power supply monitored by RS4, controlled by PSEN4, and | + | | margined with PWM4. | + |_______|___________________________________________________________________| + | 5 | Power supply monitored by RS5, controlled by PSEN5, and | + | | margined with PWM5. | + |_______|___________________________________________________________________| + | 6 | Power supply monitored by RS6, controlled by PSEN6, and | + | | margined with PWM6. | + |_______|___________________________________________________________________| + | 7 | Power supply monitored by RS7, controlled by PSEN7, and | + | | margined with PWM7. | + |_______|___________________________________________________________________| + | 8 | Power supply monitored by RS8, controlled by PSEN8, and | + | | optionally margined by OUT0 of external DS4424 at I2C address A0h.| + |_______|___________________________________________________________________| + | 9 | Power supply monitored by RS9, controlled by PSEN9, and | + | | optionally margined by OUT1 of external DS4424 at I2C address A0h.| + |_______|___________________________________________________________________| + | 10 | Power supply monitored by RS10, controlled by PSEN10, and | + | | optionally margined by OUT2 of external DS4424 at I2C address A0h.| + |_______|___________________________________________________________________| + | 11 | Power supply monitored by RS11, controlled by PSEN11, and | + | | optionally margined by OUT3 of external DS4424 at I2C address A0h.| + |_______|___________________________________________________________________| + | 12 | ADC channel 12 (monitors voltage or current) or GPI. | + |_______|___________________________________________________________________| + | 13 | ADC channel 13 (monitors voltage or current) or GPI. | + |_______|___________________________________________________________________| + | 14 | ADC channel 14 (monitors voltage or current) or GPI. | + |_______|___________________________________________________________________| + | 15 | ADC channel 15 (monitors voltage or current) or GPI. | + |_______|___________________________________________________________________| + | 16 | Internal temperature sensor. | + |_______|___________________________________________________________________| + | 17 | External DS75LV temperature sensor with I2C address 90h. | + |_______|___________________________________________________________________| + | 18 | External DS75LV temperature sensor with I2C address 92h. | + |_______|___________________________________________________________________| + | 19 | External DS75LV temperature sensor with I2C address 94h. | + |_______|___________________________________________________________________| + | 20 | External DS75LV temperature sensor with I2C address 96h. | + |_______|___________________________________________________________________| + | 21–254| Reserved. | + |_______|___________________________________________________________________| + | 255 | Applies to all pages. | + |_______|___________________________________________________________________| + * + * @operation: Turn on and off power supplies + * @on_off_config: Configure the power supply on and off transition behaviour + * @write_protect: protect against changes to the device's memory + * @vout_margin_high: the voltage when OPERATION is set to margin high + * @vout_margin_low: the voltage when OPERATION is set to margin low + * @vout_scale: scale ADC reading to actual device reading if different + * @iout_cal_gain: set ratio of the voltage at the ADC input to sensed current + */ +typedef struct MAX34451State { + PMBusDevice parent; + + uint16_t power_good_on[MAX34451_NUM_PWR_DEVICES]; + uint16_t power_good_off[MAX34451_NUM_PWR_DEVICES]; + uint16_t ton_delay[MAX34451_NUM_MARGINED_PSU]; + uint16_t ton_max_fault_limit[MAX34451_NUM_MARGINED_PSU]; + uint16_t toff_delay[MAX34451_NUM_MARGINED_PSU]; + uint8_t status_mfr_specific[MAX34451_NUM_PWR_DEVICES]; + /* Manufacturer specific function */ + uint64_t mfr_location; + uint64_t mfr_date; + uint64_t mfr_serial; + uint16_t mfr_mode; + uint32_t psen_config[MAX34451_NUM_MARGINED_PSU]; + uint16_t vout_peak[MAX34451_NUM_PWR_DEVICES]; + uint16_t iout_peak[MAX34451_NUM_PWR_DEVICES]; + uint16_t temperature_peak[MAX34451_NUM_TEMP_DEVICES]; + uint16_t vout_min[MAX34451_NUM_PWR_DEVICES]; + uint16_t nv_log_config; + uint32_t fault_response[MAX34451_NUM_PWR_DEVICES]; + uint16_t fault_retry; + uint32_t fault_log; + uint32_t time_count; + uint16_t margin_config[MAX34451_NUM_MARGINED_PSU]; + uint16_t fw_serial; + uint16_t iout_avg[MAX34451_NUM_PWR_DEVICES]; + uint16_t channel_config[MAX34451_NUM_PWR_DEVICES]; + uint16_t ton_seq_max[MAX34451_NUM_MARGINED_PSU]; + uint32_t pwm_config[MAX34451_NUM_MARGINED_PSU]; + uint32_t seq_config[MAX34451_NUM_MARGINED_PSU]; + uint16_t temp_sensor_config[MAX34451_NUM_TEMP_DEVICES]; + uint16_t store_single; + uint16_t crc; +} MAX34451State; + + +static void max34451_check_limits(MAX34451State *s) +{ + PMBusDevice *pmdev = PMBUS_DEVICE(s); + + pmbus_check_limits(pmdev); + + for (int i = 0; i < MAX34451_NUM_PWR_DEVICES; i++) { + if (pmdev->pages[i].read_vout == 0) { /* PSU disabled */ + continue; + } + + if (pmdev->pages[i].read_vout > s->vout_peak[i]) { + s->vout_peak[i] = pmdev->pages[i].read_vout; + } + + if (pmdev->pages[i].read_vout < s->vout_min[i]) { + s->vout_min[i] = pmdev->pages[i].read_vout; + } + + if (pmdev->pages[i].read_iout > s->iout_peak[i]) { + s->iout_peak[i] = pmdev->pages[i].read_iout; + } + } + + for (int i = 0; i < MAX34451_NUM_TEMP_DEVICES; i++) { + if (pmdev->pages[i + 16].read_temperature_1 > s->temperature_peak[i]) { + s->temperature_peak[i] = pmdev->pages[i + 16].read_temperature_1; + } + } +} + +static uint8_t max34451_read_byte(PMBusDevice *pmdev) +{ + MAX34451State *s = MAX34451(pmdev); + switch (pmdev->code) { + + case PMBUS_POWER_GOOD_ON: + if (pmdev->page < 16) { + pmbus_send16(pmdev, s->power_good_on[pmdev->page]); + } + break; + + case PMBUS_POWER_GOOD_OFF: + if (pmdev->page < 16) { + pmbus_send16(pmdev, s->power_good_off[pmdev->page]); + } + break; + + case PMBUS_TON_DELAY: + if (pmdev->page < 12) { + pmbus_send16(pmdev, s->ton_delay[pmdev->page]); + } + break; + + case PMBUS_TON_MAX_FAULT_LIMIT: + if (pmdev->page < 12) { + pmbus_send16(pmdev, s->ton_max_fault_limit[pmdev->page]); + } + break; + + case PMBUS_TOFF_DELAY: + if (pmdev->page < 12) { + pmbus_send16(pmdev, s->toff_delay[pmdev->page]); + } + break; + + case PMBUS_STATUS_MFR_SPECIFIC: + if (pmdev->page < 16) { + pmbus_send8(pmdev, s->status_mfr_specific[pmdev->page]); + } + break; + + case PMBUS_MFR_ID: + pmbus_send8(pmdev, 0x4d); /* Maxim */ + break; + + case PMBUS_MFR_MODEL: + pmbus_send8(pmdev, 0x59); + break; + + case PMBUS_MFR_LOCATION: + pmbus_send64(pmdev, s->mfr_location); + break; + + case PMBUS_MFR_DATE: + pmbus_send64(pmdev, s->mfr_date); + break; + + case PMBUS_MFR_SERIAL: + pmbus_send64(pmdev, s->mfr_serial); + break; + + case MAX34451_MFR_MODE: + pmbus_send16(pmdev, s->mfr_mode); + break; + + case MAX34451_MFR_PSEN_CONFIG: + if (pmdev->page < 12) { + pmbus_send32(pmdev, s->psen_config[pmdev->page]); + } + break; + + case MAX34451_MFR_VOUT_PEAK: + if (pmdev->page < 16) { + pmbus_send16(pmdev, s->vout_peak[pmdev->page]); + } + break; + + case MAX34451_MFR_IOUT_PEAK: + if (pmdev->page < 16) { + pmbus_send16(pmdev, s->iout_peak[pmdev->page]); + } + break; + + case MAX34451_MFR_TEMPERATURE_PEAK: + if (15 < pmdev->page && pmdev->page < 21) { + pmbus_send16(pmdev, s->temperature_peak[pmdev->page % 16]); + } else { + pmbus_send16(pmdev, s->temperature_peak[0]); + } + break; + + case MAX34451_MFR_VOUT_MIN: + if (pmdev->page < 16) { + pmbus_send16(pmdev, s->vout_min[pmdev->page]); + } + break; + + case MAX34451_MFR_NV_LOG_CONFIG: + pmbus_send16(pmdev, s->nv_log_config); + break; + + case MAX34451_MFR_FAULT_RESPONSE: + if (pmdev->page < 16) { + pmbus_send32(pmdev, s->fault_response[pmdev->page]); + } + break; + + case MAX34451_MFR_FAULT_RETRY: + pmbus_send32(pmdev, s->fault_retry); + break; + + case MAX34451_MFR_NV_FAULT_LOG: + pmbus_send32(pmdev, s->fault_log); + break; + + case MAX34451_MFR_TIME_COUNT: + pmbus_send32(pmdev, s->time_count); + break; + + case MAX34451_MFR_MARGIN_CONFIG: + if (pmdev->page < 12) { + pmbus_send16(pmdev, s->margin_config[pmdev->page]); + } + break; + + case MAX34451_MFR_FW_SERIAL: + if (pmdev->page == 255) { + pmbus_send16(pmdev, 1); /* Firmware revision */ + } + break; + + case MAX34451_MFR_IOUT_AVG: + if (pmdev->page < 16) { + pmbus_send16(pmdev, s->iout_avg[pmdev->page]); + } + break; + + case MAX34451_MFR_CHANNEL_CONFIG: + if (pmdev->page < 16) { + pmbus_send16(pmdev, s->channel_config[pmdev->page]); + } + break; + + case MAX34451_MFR_TON_SEQ_MAX: + if (pmdev->page < 12) { + pmbus_send16(pmdev, s->ton_seq_max[pmdev->page]); + } + break; + + case MAX34451_MFR_PWM_CONFIG: + if (pmdev->page < 12) { + pmbus_send32(pmdev, s->pwm_config[pmdev->page]); + } + break; + + case MAX34451_MFR_SEQ_CONFIG: + if (pmdev->page < 12) { + pmbus_send32(pmdev, s->seq_config[pmdev->page]); + } + break; + + case MAX34451_MFR_TEMP_SENSOR_CONFIG: + if (15 < pmdev->page && pmdev->page < 21) { + pmbus_send32(pmdev, s->temp_sensor_config[pmdev->page % 16]); + } + break; + + case MAX34451_MFR_STORE_SINGLE: + pmbus_send32(pmdev, s->store_single); + break; + + case MAX34451_MFR_CRC: + pmbus_send32(pmdev, s->crc); + break; + + default: + qemu_log_mask(LOG_GUEST_ERROR, + "%s: reading from unsupported register: 0x%02x\n", + __func__, pmdev->code); + break; + } + return 0xFF; +} + +static int max34451_write_data(PMBusDevice *pmdev, const uint8_t *buf, + uint8_t len) +{ + MAX34451State *s = MAX34451(pmdev); + + if (len == 0) { + qemu_log_mask(LOG_GUEST_ERROR, "%s: writing empty data\n", __func__); + return -1; + } + + pmdev->code = buf[0]; /* PMBus command code */ + + if (len == 1) { + return 0; + } + + /* Exclude command code from buffer */ + buf++; + len--; + uint8_t index = pmdev->page; + + switch (pmdev->code) { + case MAX34451_MFR_STORE_ALL: + case MAX34451_MFR_RESTORE_ALL: + case MAX34451_MFR_STORE_SINGLE: + /* + * TODO: hardware behaviour is to move the contents of volatile + * memory to non-volatile memory. + */ + break; + + case PMBUS_POWER_GOOD_ON: /* R/W word */ + if (pmdev->page < MAX34451_NUM_PWR_DEVICES) { + s->power_good_on[pmdev->page] = pmbus_receive16(pmdev); + } + break; + + case PMBUS_POWER_GOOD_OFF: /* R/W word */ + if (pmdev->page < MAX34451_NUM_PWR_DEVICES) { + s->power_good_off[pmdev->page] = pmbus_receive16(pmdev); + } + break; + + case PMBUS_TON_DELAY: /* R/W word */ + if (pmdev->page < 12) { + s->ton_delay[pmdev->page] = pmbus_receive16(pmdev); + } + break; + + case PMBUS_TON_MAX_FAULT_LIMIT: /* R/W word */ + if (pmdev->page < 12) { + s->ton_max_fault_limit[pmdev->page] + = pmbus_receive16(pmdev); + } + break; + + case PMBUS_TOFF_DELAY: /* R/W word */ + if (pmdev->page < 12) { + s->toff_delay[pmdev->page] = pmbus_receive16(pmdev); + } + break; + + case PMBUS_MFR_LOCATION: /* R/W 64 */ + s->mfr_location = pmbus_receive64(pmdev); + break; + + case PMBUS_MFR_DATE: /* R/W 64 */ + s->mfr_date = pmbus_receive64(pmdev); + break; + + case PMBUS_MFR_SERIAL: /* R/W 64 */ + s->mfr_serial = pmbus_receive64(pmdev); + break; + + case MAX34451_MFR_MODE: /* R/W word */ + s->mfr_mode = pmbus_receive16(pmdev); + break; + + case MAX34451_MFR_PSEN_CONFIG: /* R/W 32 */ + if (pmdev->page < 12) { + s->psen_config[pmdev->page] = pmbus_receive32(pmdev); + } + break; + + case MAX34451_MFR_VOUT_PEAK: /* R/W word */ + if (pmdev->page < 16) { + s->vout_peak[pmdev->page] = pmbus_receive16(pmdev); + } + break; + + case MAX34451_MFR_IOUT_PEAK: /* R/W word */ + if (pmdev->page < 16) { + s->iout_peak[pmdev->page] = pmbus_receive16(pmdev); + } + break; + + case MAX34451_MFR_TEMPERATURE_PEAK: /* R/W word */ + if (15 < pmdev->page && pmdev->page < 21) { + s->temperature_peak[pmdev->page % 16] + = pmbus_receive16(pmdev); + } + break; + + case MAX34451_MFR_VOUT_MIN: /* R/W word */ + if (pmdev->page < 16) { + s->vout_min[pmdev->page] = pmbus_receive16(pmdev); + } + break; + + case MAX34451_MFR_NV_LOG_CONFIG: /* R/W word */ + s->nv_log_config = pmbus_receive16(pmdev); + break; + + case MAX34451_MFR_FAULT_RESPONSE: /* R/W 32 */ + if (pmdev->page < 16) { + s->fault_response[pmdev->page] = pmbus_receive32(pmdev); + } + break; + + case MAX34451_MFR_FAULT_RETRY: /* R/W word */ + s->fault_retry = pmbus_receive16(pmdev); + break; + + case MAX34451_MFR_TIME_COUNT: /* R/W 32 */ + s->time_count = pmbus_receive32(pmdev); + break; + + case MAX34451_MFR_MARGIN_CONFIG: /* R/W word */ + if (pmdev->page < 12) { + s->margin_config[pmdev->page] = pmbus_receive16(pmdev); + } + break; + + case MAX34451_MFR_CHANNEL_CONFIG: /* R/W word */ + if (pmdev->page < 16) { + s->channel_config[pmdev->page] = pmbus_receive16(pmdev); + } + break; + + case MAX34451_MFR_TON_SEQ_MAX: /* R/W word */ + if (pmdev->page < 12) { + s->ton_seq_max[pmdev->page] = pmbus_receive16(pmdev); + } + break; + + case MAX34451_MFR_PWM_CONFIG: /* R/W 32 */ + if (pmdev->page < 12) { + s->pwm_config[pmdev->page] = pmbus_receive32(pmdev); + } + break; + + case MAX34451_MFR_SEQ_CONFIG: /* R/W 32 */ + if (pmdev->page < 12) { + s->seq_config[pmdev->page] = pmbus_receive32(pmdev); + } + break; + + case MAX34451_MFR_TEMP_SENSOR_CONFIG: /* R/W word */ + if (15 < pmdev->page && pmdev->page < 21) { + s->temp_sensor_config[pmdev->page % 16] + = pmbus_receive16(pmdev); + } + break; + + case MAX34451_MFR_CRC: /* R/W word */ + s->crc = pmbus_receive16(pmdev); + break; + + case MAX34451_MFR_NV_FAULT_LOG: + case MAX34451_MFR_FW_SERIAL: + case MAX34451_MFR_IOUT_AVG: + /* Read only commands */ + pmdev->pages[index].status_word |= PMBUS_STATUS_CML; + pmdev->pages[index].status_cml |= PB_CML_FAULT_INVALID_DATA; + qemu_log_mask(LOG_GUEST_ERROR, + "%s: writing to read-only register 0x%02x\n", + __func__, pmdev->code); + break; + + default: + qemu_log_mask(LOG_GUEST_ERROR, + "%s: writing to unsupported register: 0x%02x\n", + __func__, pmdev->code); + break; + } + + return 0; +} + +static void max34451_get(Object *obj, Visitor *v, const char *name, + void *opaque, Error **errp) +{ + visit_type_uint16(v, name, (uint16_t *)opaque, errp); +} + +static void max34451_set(Object *obj, Visitor *v, const char *name, + void *opaque, Error **errp) +{ + MAX34451State *s = MAX34451(obj); + uint16_t *internal = opaque; + uint16_t value; + if (!visit_type_uint16(v, name, &value, errp)) { + return; + } + + *internal = value; + max34451_check_limits(s); +} + +/* used to init uint16_t arrays */ +static inline void *memset_word(void *s, uint16_t c, size_t n) +{ + size_t i; + uint16_t *p = s; + + for (i = 0; i < n; i++) { + p[i] = c; + } + + return s; +} + +static void max34451_exit_reset(Object *obj) +{ + PMBusDevice *pmdev = PMBUS_DEVICE(obj); + MAX34451State *s = MAX34451(obj); + pmdev->capability = DEFAULT_CAPABILITY; + + for (int i = 0; i < MAX34451_NUM_PAGES; i++) { + pmdev->pages[i].operation = DEFAULT_OP_ON; + pmdev->pages[i].on_off_config = DEFAULT_ON_OFF_CONFIG; + pmdev->pages[i].revision = 0x11; + pmdev->pages[i].vout_mode = DEFAULT_VOUT_MODE; + } + + for (int i = 0; i < MAX34451_NUM_PWR_DEVICES; i++) { + pmdev->pages[i].vout_scale_monitor = DEFAULT_SCALE; + pmdev->pages[i].vout_ov_fault_limit = DEFAULT_OV_LIMIT; + pmdev->pages[i].vout_ov_warn_limit = DEFAULT_OV_LIMIT; + pmdev->pages[i].iout_oc_warn_limit = DEFAULT_OC_LIMIT; + pmdev->pages[i].iout_oc_fault_limit = DEFAULT_OC_LIMIT; + } + + for (int i = 0; i < MAX34451_NUM_MARGINED_PSU; i++) { + pmdev->pages[i].ton_max_fault_limit = DEFAULT_TON_FAULT_LIMIT; + } + + for (int i = 16; i < MAX34451_NUM_TEMP_DEVICES + 16; i++) { + pmdev->pages[i].read_temperature_1 = DEFAULT_TEMPERATURE; + pmdev->pages[i].ot_warn_limit = DEFAULT_OT_LIMIT; + pmdev->pages[i].ot_fault_limit = DEFAULT_OT_LIMIT; + } + + memset_word(s->ton_max_fault_limit, DEFAULT_TON_FAULT_LIMIT, + MAX34451_NUM_MARGINED_PSU); + memset_word(s->channel_config, DEFAULT_CHANNEL_CONFIG, + MAX34451_NUM_PWR_DEVICES); + memset_word(s->vout_min, DEFAULT_VMIN, MAX34451_NUM_PWR_DEVICES); + + s->mfr_location = DEFAULT_TEXT; + s->mfr_date = DEFAULT_TEXT; + s->mfr_serial = DEFAULT_TEXT; +} + +static void max34451_init(Object *obj) +{ + PMBusDevice *pmdev = PMBUS_DEVICE(obj); + uint64_t psu_flags = PB_HAS_VOUT | PB_HAS_IOUT | PB_HAS_VOUT_MODE | + PB_HAS_IOUT_GAIN; + + for (int i = 0; i < MAX34451_NUM_PWR_DEVICES; i++) { + pmbus_page_config(pmdev, i, psu_flags); + } + + for (int i = 0; i < MAX34451_NUM_MARGINED_PSU; i++) { + pmbus_page_config(pmdev, i, psu_flags | PB_HAS_VOUT_MARGIN); + } + + for (int i = 16; i < MAX34451_NUM_TEMP_DEVICES + 16; i++) { + pmbus_page_config(pmdev, i, PB_HAS_TEMPERATURE | PB_HAS_VOUT_MODE); + } + + /* get and set the voltage in millivolts, max is 32767 mV */ + for (int i = 0; i < MAX34451_NUM_PWR_DEVICES; i++) { + object_property_add(obj, "vout[*]", "uint16", + max34451_get, + max34451_set, NULL, &pmdev->pages[i].read_vout); + } + + /* + * get and set the temperature of the internal temperature sensor in + * centidegrees Celcius i.e.: 2500 -> 25.00 C, max is 327.67 C + */ + for (int i = 0; i < MAX34451_NUM_TEMP_DEVICES; i++) { + object_property_add(obj, "temperature[*]", "uint16", + max34451_get, + max34451_set, + NULL, + &pmdev->pages[i + 16].read_temperature_1); + } + +} + +static void max34451_class_init(ObjectClass *klass, void *data) +{ + ResettableClass *rc = RESETTABLE_CLASS(klass); + DeviceClass *dc = DEVICE_CLASS(klass); + PMBusDeviceClass *k = PMBUS_DEVICE_CLASS(klass); + dc->desc = "Maxim MAX34451 16-Channel V/I monitor"; + k->write_data = max34451_write_data; + k->receive_byte = max34451_read_byte; + k->device_num_pages = MAX34451_NUM_PAGES; + rc->phases.exit = max34451_exit_reset; +} + +static const TypeInfo max34451_info = { + .name = TYPE_MAX34451, + .parent = TYPE_PMBUS_DEVICE, + .instance_size = sizeof(MAX34451State), + .instance_init = max34451_init, + .class_init = max34451_class_init, +}; + +static void max34451_register_types(void) +{ + type_register_static(&max34451_info); +} + +type_init(max34451_register_types) diff --git a/hw/arm/Kconfig b/hw/arm/Kconfig index e141084a79..d689941f64 100644 --- a/hw/arm/Kconfig +++ b/hw/arm/Kconfig @@ -374,6 +374,7 @@ config NPCM7XX select ADM1272 select ARM_GIC select AT24C # EEPROM + select MAX34451 select PL310 # cache controller select PMBUS select SERIAL diff --git a/hw/misc/Kconfig b/hw/misc/Kconfig index 0774c1f70c..1747667984 100644 --- a/hw/misc/Kconfig +++ b/hw/misc/Kconfig @@ -30,6 +30,10 @@ config EMC141X bool depends on I2C +config MAX34451 + bool + depends on I2C + config ISA_DEBUG bool depends on ISA_BUS diff --git a/hw/misc/meson.build b/hw/misc/meson.build index 8666e9225a..b62919e1fe 100644 --- a/hw/misc/meson.build +++ b/hw/misc/meson.build @@ -11,6 +11,7 @@ softmmu_ss.add(when: 'CONFIG_TMP105', if_true: files('tmp105.c')) softmmu_ss.add(when: 'CONFIG_TMP421', if_true: files('tmp421.c')) softmmu_ss.add(when: 'CONFIG_EMC141X', if_true: files('emc141x.c')) softmmu_ss.add(when: 'CONFIG_ADM1272', if_true: files('adm1272.c')) +softmmu_ss.add(when: 'CONFIG_MAX34451', if_true: files('max34451.c')) softmmu_ss.add(when: 'CONFIG_UNIMP', if_true: files('unimp.c')) softmmu_ss.add(when: 'CONFIG_EMPTY_SLOT', if_true: files('empty_slot.c')) softmmu_ss.add(when: 'CONFIG_LED', if_true: files('led.c'))