#ifndef CRASHPOWEROS_PCNET_H
#define CRASHPOWEROS_PCNET_H

#define CARD_VENDOR_ID 0x1022
#define CARD_DEVICE_ID 0x2000
//  为了使用该寄存器，必须将RAP设置为这些值
#define CSR0 0
#define CSR1 1
#define CSR2 2
#define CSR3 3
#define CSR4 4
#define BCR18 18
#define BCR20 20
// 16位I/O端口（或到I/O空间开始的偏移）。
#define APROM0 0x00
#define APROM1 0x01
#define APROM2 0x02
#define APROM3 0x03
#define APROM4 0x04
#define APROM5 0x05
// 16位读写模式下
#define RDP16 0x10
#define RAP16 0x12
#define RESET16 0x14
#define BDP16 0x16
// 32位读写模式下
#define RDP32 0x10
#define RAP32 0x14
#define RESET32 0x18
#define BDP32 0x1c
#define MTU 1500
#define ARP_PROTOCOL 0x806
#define IP_PROTOCOL 0x0800
#define IP_MF 13
#define IP_DF 14
#define IP_OFFSET 0
#define swap32(x)                                                              \
  ((((x) & 0xff000000) >> 24) | (((x) & 0x00ff0000) >> 8) |                    \
   (((x) & 0x0000ff00) << 8) | (((x) & 0x000000ff) << 24))
#define swap16(x) ((((x) & 0xff00) >> 8) | (((x) & 0x00ff) << 8))
#include <stdint.h>
#include "isr.h"

struct InitializationBlock {
    uint16_t mode;
    uint8_t reserved1numSendBuffers;
    uint8_t reserved2numRecvBuffers;
    uint8_t mac0, mac1, mac2, mac3, mac4, mac5;
    uint16_t reserved3;
    uint64_t logicalAddress;
    uint32_t recvBufferDescAddress;
    uint32_t sendBufferDescAddress;
} __attribute__((packed));

struct BufferDescriptor {
    uint32_t address;
    uint32_t flags;
    uint32_t flags2;
    uint32_t avail;
} __attribute__((packed));

void into_32bitsRW();
void into_16bitsRW();
void reset_card();
void Activate();
int pcnet_find_card();
void init_pcnet_card();
void PCNET_IRQ(registers_t *reg);
void Recv();
void PcnetSend(uint8_t* buffer, int size);

#endif