src/qemu_edu/registers.h

// Copyright 2022 The Fuchsia Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
//
#ifndef SRC_QEMU_EDU_REGISTERS_H_
#define SRC_QEMU_EDU_REGISTERS_H_

#include <hwreg/bitfields.h>

namespace qemu_edu_regs {

constexpr uint32_t kIdentificationOffset = 0x00;
constexpr uint32_t kLivenessCheckOffset = 0x04;
constexpr uint32_t kFactorialCompoutationOffset = 0x08;
constexpr uint32_t kStatusRegisterOffset = 0x20;
constexpr uint32_t kInterruptStatusRegisterOffset = 0x24;
constexpr uint32_t kInterruptRaiseRegisterOffset = 0x60;
constexpr uint32_t kInterruptAcknowledgeRegisterOffset = 0x64;
constexpr uint32_t kDmaSourceAddressOffset = 0x80;
constexpr uint32_t kDmaDestinationAddressOffset = 0x80;
constexpr uint32_t kDmaTransferCountOffset = 0x90;
constexpr uint32_t kDmaCommandRegisterOffset = 0x98;

class Identification : public hwreg::RegisterBase<Identification, uint32_t> {
 public:
  DEF_FIELD(31, 24, major_version);
  DEF_FIELD(23, 16, minor_version);
  DEF_FIELD(15, 0, edu);

  static auto Get() {
    return hwreg::RegisterAddr<Identification>(kIdentificationOffset);
  }
};

class Status : public hwreg::RegisterBase<Status, uint32_t> {
 public:
  DEF_BIT(0, busy);
  DEF_BIT(7, irq_enable);

  static auto Get() {
    return hwreg::RegisterAddr<Status>(kStatusRegisterOffset);
  }
};

}  // namespace qemu_edu

#endif  // SRC_QEMU_EDU_REGISTERS_H_