src/bsp/lk/platform/pc/include/pcnet.h

/*
 * Copyright (c) 2013 Corey Tabaka
 *
 * Permission is hereby granted, free of charge, to any person obtaining
 * a copy of this software and associated documentation files
 * (the "Software"), to deal in the Software without restriction,
 * including without limitation the rights to use, copy, modify, merge,
 * publish, distribute, sublicense, and/or sell copies of the Software,
 * and to permit persons to whom the Software is furnished to do so,
 * subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
 * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
 * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */
#ifndef __PLATFORM_PC_PCNET_H
#define __PLATFORM_PC_PCNET_H

#include <compiler.h>
#include <stdint.h>

#define REG_APROM 0x00
#define REG_RDP   0x10
#define REG_RAP   0x14
#define REG_RESET 0x18
#define REG_BDP   0x1c

#define CSR0_INIT 0x0001
#define CSR0_STRT 0x0002
#define CSR0_STOP 0x0004
#define CSR0_TDMD 0x0008
#define CSR0_TXON 0x0010
#define CSR0_RXON 0x0020
#define CSR0_IENA 0x0040
#define CSR0_INTR 0x0080
#define CSR0_IDON 0x0100
#define CSR0_TINT 0x0200
#define CSR0_RINT 0x0400
#define CSR0_MERR 0x0800
#define CSR0_MISS 0x1000
#define CSR0_CERR 0x2000
#define CSR0_BABL 0x4000
#define CSR0_ERR  0x8000

#define CSR4_DMAPLUS 0x4000

#define DESC_SIZE (4*sizeof(uint32_t))

struct init_block_32 {
    uint16_t mode;

    uint16_t reserved_0 : 4;
    uint16_t rlen       : 4;
    uint16_t reserved_1 : 4;
    uint16_t tlen       : 4;

    uint8_t padr[6];

    uint16_t reserved_2;

    uint64_t ladr;
    uint32_t rdra;
    uint32_t tdra;
} __PACKED;

struct td_style3 {
    uint32_t trc         : 4;
    uint32_t reserved_1  : 8;
    uint32_t tdr         : 14;
    uint32_t rtry        : 1;
    uint32_t lcar        : 1;
    uint32_t lcol        : 1;
    uint32_t exdef       : 1;
    uint32_t uflo        : 1;
    uint32_t buff        : 1;

    uint32_t bcnt        : 12;
    uint32_t ones        : 4;
    uint32_t reserved_0  : 7;
    uint32_t bpe         : 1;
    uint32_t enp         : 1;
    uint32_t stp         : 1;
    uint32_t def         : 1;
    uint32_t one         : 1;
    uint32_t more_ltinit : 1;
    uint32_t add_no_fcs  : 1;
    uint32_t err         : 1;
    uint32_t own         : 1;

    uint32_t tbadr;

    uint32_t reserved_2;
} __PACKED;

struct rd_style3 {
    uint16_t mcnt        : 12;
    uint16_t zeros       : 4;

    uint8_t rpc;
    uint8_t rcc;

    uint32_t bcnt        : 12;
    uint32_t ones        : 4;
    uint32_t reserved_0  : 4;
    uint32_t bam         : 1;
    uint32_t lafm        : 1;
    uint32_t pam         : 1;
    uint32_t bpe         : 1;
    uint32_t enp         : 1;
    uint32_t stp         : 1;
    uint32_t buff        : 1;
    uint32_t crc         : 1;
    uint32_t oflo        : 1;
    uint32_t fram        : 1;
    uint32_t err         : 1;
    uint32_t own         : 1;

    uint32_t rbadr;

    uint32_t reserved_1;
} __PACKED;

#endif