// Copyright 2016 The Fuchsia Authors
//
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file or at
// https://opensource.org/licenses/MIT

#ifndef ZIRCON_KERNEL_LIB_EFI_INCLUDE_EFI_PROTOCOL_SIMPLE_NETWORK_H_
#define ZIRCON_KERNEL_LIB_EFI_INCLUDE_EFI_PROTOCOL_SIMPLE_NETWORK_H_

#include <stdbool.h>
#include <zircon/compiler.h>

#include <efi/types.h>

__BEGIN_CDECLS

#define EFI_SIMPLE_NETWORK_PROTOCOL_GUID                                           \
  {                                                                                \
    0xa19832b9, 0xac25, 0x11d3, { 0x9a, 0x2d, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d } \
  }
extern const efi_guid SimpleNetworkProtocol;

#define EFI_SIMPLE_NETWORK_PROTOCOL_REVISION 0x00010000

#define MAX_MCAST_FILTER_CNT 16
typedef struct {
  uint32_t State;
  uint32_t HwAddressSize;
  uint32_t MediaHeaderSize;
  uint32_t MaxPacketSize;
  uint32_t NvRamSize;
  uint32_t NvRamAccessSize;
  uint32_t ReceiveFilterMask;
  uint32_t ReceiveFilterSetting;
  uint32_t MaxMCastFilterCount;
  uint32_t MCastFilterCount;
  efi_mac_addr MCastFilter[MAX_MCAST_FILTER_CNT];
  efi_mac_addr CurrentAddress;
  efi_mac_addr BroadcastAddress;
  efi_mac_addr PermanentAddress;
  uint8_t IfType;
  bool MacAddressChangeable;
  bool MultipleTxSupported;
  bool MediaPresentSupported;
  bool MediaPresent;
} efi_simple_network_mode;

typedef enum {
  EfiSimpleNetworkStopped,
  EfiSimpleNetworkStarted,
  EfiSimpleNetworkInitialized,
  EfiSimpleNetworkMaxState
} efi_simple_network_state;

#define EFI_SIMPLE_NETWORK_RECEIVE_UNICAST 0x01
#define EFI_SIMPLE_NETWORK_RECEIVE_MULTICAST 0x02
#define EFI_SIMPLE_NETWORK_RECEIVE_BROADCAST 0x04
#define EFI_SIMPLE_NETWORK_RECEIVE_PROMISCUOUS 0x08
#define EFI_SIMPLE_NETWORK_RECEIVE_PROMISCUOUS_MULTICAST 0x10

typedef struct {
  uint64_t RxTotalFrames;
  uint64_t RxGoodFrames;
  uint64_t RxUndersizeFrames;
  uint64_t RxOversizeFrames;
  uint64_t RxDroppedFrames;
  uint64_t RxUnicastFrames;
  uint64_t RxBroadcastFrames;
  uint64_t RxMulticastFrames;
  uint64_t RxCrcErrorFrames;
  uint64_t RxTotalBytes;
  uint64_t TxTotalFrames;
  uint64_t TxGoodFrames;
  uint64_t TxUndersizeFrames;
  uint64_t TxOversizeFrames;
  uint64_t TxDroppedFrames;
  uint64_t TxUnicastFrames;
  uint64_t TxBroadcastFrames;
  uint64_t TxMulticastFrames;
  uint64_t TxCrcErrorFrames;
  uint64_t TxTotalBytes;
  uint64_t Collisions;
  uint64_t UnsupportedProtocol;
  uint64_t RxDuplicatedFrames;
  uint64_t RxDecryptErrorFrames;
  uint64_t TxErrorFrames;
  uint64_t TxRetryFrames;
} efi_network_statistics;

#define EFI_SIMPLE_NETWORK_RECEIVE_INTERRUPT 0x01
#define EFI_SIMPLE_NETWORK_TRANSMIT_INTERRUPT 0x02
#define EFI_SIMPLE_NETWORK_COMMAND_INTERRUPT 0x04
#define EFI_SIMPLE_NETWORK_SOFTWARE_INTERRUPT 0x08

typedef struct efi_simple_network_protocol {
  uint64_t Revision;

  efi_status (*Start)(struct efi_simple_network_protocol* self) EFIAPI;

  efi_status (*Stop)(struct efi_simple_network_protocol* self) EFIAPI;

  efi_status (*Initialize)(struct efi_simple_network_protocol* self, size_t extra_rx_buf_size,
                           size_t extra_tx_buf_size) EFIAPI;

  efi_status (*Reset)(struct efi_simple_network_protocol* self, bool extended_verification) EFIAPI;

  efi_status (*Shutdown)(struct efi_simple_network_protocol* self) EFIAPI;

  efi_status (*ReceiveFilters)(struct efi_simple_network_protocol* self, uint32_t enable,
                               uint32_t disable, bool reset_mcast_filter, size_t mcast_filter_count,
                               efi_mac_addr* mcast_filter) EFIAPI;

  efi_status (*StationAddress)(struct efi_simple_network_protocol* self, bool reset,
                               efi_mac_addr* new_addr) EFIAPI;

  efi_status (*Statistics)(struct efi_simple_network_protocol* self, bool reset, size_t* stats_size,
                           efi_network_statistics* stats_table) EFIAPI;

  efi_status (*MCastIpToMac)(struct efi_simple_network_protocol* self, bool ipv6, efi_ip_addr* ip,
                             efi_mac_addr* mac) EFIAPI;

  efi_status (*NvData)(struct efi_simple_network_protocol* self, bool read_write, size_t offset,
                       size_t buf_size, void* buf) EFIAPI;

  efi_status (*GetStatus)(struct efi_simple_network_protocol* self, uint32_t* interrupt_status,
                          void** tx_buf) EFIAPI;

  efi_status (*Transmit)(struct efi_simple_network_protocol* self, size_t header_size,
                         size_t buf_size, void* buf, efi_mac_addr* src, efi_mac_addr* dest,
                         uint16_t* protocol) EFIAPI;

  efi_status (*Receive)(struct efi_simple_network_protocol* self, size_t* header_size,
                        size_t* buf_size, void* buf, efi_mac_addr* src, efi_mac_addr* dest,
                        uint16_t* protocol) EFIAPI;

  efi_event WaitForPacket;
  efi_simple_network_mode* Mode;
} efi_simple_network_protocol;

__END_CDECLS

#endif  // ZIRCON_KERNEL_LIB_EFI_INCLUDE_EFI_PROTOCOL_SIMPLE_NETWORK_H_