Dmitry Yakovlev
99 lines
2.4 KiB
C
99 lines
2.4 KiB
C
/*
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* ESP32-S3 PMS Dummy
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*
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* Copyright (c) 2024 Espressif Systems (Shanghai) Co. Ltd.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 or
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* (at your option) any later version.
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*/
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#include "qemu/osdep.h"
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#include "qemu/log.h"
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#include "qemu/error-report.h"
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#include "qapi/error.h"
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#include "hw/hw.h"
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#include "hw/sysbus.h"
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#include "hw/boards.h"
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#include "hw/misc/esp32s3_pms.h"
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#include "hw/irq.h"
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#define PMS_DEBUG 0
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#define PMS_WARNING 0
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#define ESP32S3_PMS_REGS_SIZE ESP32S3_PMS_REG_COUNT * sizeof(uint32_t)
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static uint64_t esp32s3_pms_read(void *opaque, hwaddr addr, unsigned int size)
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{
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ESP32S3PmsState *s = ESP32S3_PMS(opaque);
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uint64_t r = 0;
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const hwaddr index = ESP32S3_PMS_REG_IDX(addr);
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switch (addr) {
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default:
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r = s->regs[index];
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#if PMS_WARNING
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warn_report("[PMS] Unsupported read to register %08lx", addr);
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#endif
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break;
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}
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#if PMS_DEBUG
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info_report("[PMS] esp32s3_pms_read addr = %8.8lx, value = %8.8lx, size = %d", addr, r, size);
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#endif
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return r;
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}
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static void esp32s3_pms_write(void *opaque, hwaddr addr,
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uint64_t value, unsigned int size)
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{
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ESP32S3PmsState *s = ESP32S3_PMS(opaque);
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#if PMS_DEBUG
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warn_report("[PMS] esp32s3_pms_write addr = %8.8lx, value = %8.8lx, size = %d", addr, value, size);
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#endif
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const hwaddr index = ESP32S3_PMS_REG_IDX(addr);
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switch (addr) {
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default:
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s->regs[index] = value;
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#if PMS_WARNING
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warn_report("[PMS] Unsupported write to register %08lx", addr);
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#endif
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break;
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}
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}
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static const MemoryRegionOps esp32s3_pms_ops = {
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.read = esp32s3_pms_read,
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.write = esp32s3_pms_write,
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.endianness = DEVICE_LITTLE_ENDIAN,
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};
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static void esp32s3_pms_init(Object *obj)
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{
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ESP32S3PmsState *s = ESP32S3_PMS(obj);
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SysBusDevice *sbd = SYS_BUS_DEVICE(obj);
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memory_region_init_io(&s->iomem, obj, &esp32s3_pms_ops, s,
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TYPE_ESP32S3_PMS, ESP32S3_PMS_REGS_SIZE);
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sysbus_init_mmio(sbd, &s->iomem);
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}
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static const TypeInfo esp32s3_pms_info = {
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.name = TYPE_ESP32S3_PMS,
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.parent = TYPE_SYS_BUS_DEVICE,
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.instance_size = sizeof(ESP32S3PmsState),
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.instance_init = esp32s3_pms_init,
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};
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static void esp32s3_pms_register_types(void)
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{
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type_register_static(&esp32s3_pms_info);
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}
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type_init(esp32s3_pms_register_types)
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