e1000

include/drivers/e1000.h

struct `e1000_device`

struct e1000_device {
    uint32_t              *regs;
    struct e1000_tx_desc  *tx_descs;
    uintptr_t             tx_descs_phys;
    uint32_t              tx_tail;
    void                  *tx_buffers[E1000_NUM_TX_DESC];
    struct e1000_rx_desc  *rx_descs;
    uintptr_t             rx_descs_phys;
    uint32_t              rx_tail;
    void                  *rx_buffers[E1000_NUM_RX_DESC];
    uint8_t               bus;
};

struct e1000_device referenced types:

struct `e1000_tx_desc`

struct e1000_tx_desc {
    uint64_t  addr;
    uint16_t  length;
    uint8_t   cso;
    union {
        uint8_t  cmd;
        struct {
            uint8_t  eop;
            uint8_t  ifcs;
            uint8_t  ic;
            uint8_t  rs;
            uint8_t  rsvd;
            uint8_t  dext;
            uint8_t  vlei;
            uint8_t  ide;
        };
    };
    union {
        uint8_t  status;
        struct {
            uint8_t  dd;
            uint8_t  ec;
            uint8_t  lc;
            uint8_t  rsvd0;
        };
    };
    uint8_t   css;
    uint16_t  special;
};

struct `e1000_rx_desc`

struct e1000_rx_desc {
    uint64_t  addr;
    uint16_t  length;
    uint16_t  checksum;
    union {
        uint8_t  status;
        struct {
            uint8_t  dd;
            uint8_t  eop;
            uint8_t  ixsm;
            uint8_t  vp;
            uint8_t  rsvd;
        };
    };
    uint8_t   errors;
    uint16_t  special;
};

struct `eth_hdr`

struct eth_hdr {
    uint8_t   dest[6];
    uint8_t   src[6];
    uint16_t  ethertype;
};

struct `ipv4_hdr`

struct ipv4_hdr {
    uint8_t   version_ihl;
    uint8_t   tos;
    uint16_t  total_length;
    uint16_t  id;
    uint16_t  flags_fragment;
    uint8_t   ttl;
    uint8_t   protocol;
    uint16_t  checksum;
    uint32_t  src_ip;
    uint32_t  dest_ip;
};

struct `icmp_hdr`

struct icmp_hdr {
    uint8_t   type;
    uint8_t   code;
    uint16_t  checksum;
    uint16_t  identifier;
    uint16_t  sequence;
};

Defines

`E1000_REG_CTRL`

#define E1000_REG_CTRL 0x0000

`E1000_REG_STATUS`

#define E1000_REG_STATUS 0x0008

`E1000_REG_TCTL`

#define E1000_REG_TCTL 0x0400

`E1000_REG_TDBAL`

#define E1000_REG_TDBAL 0x03800

`E1000_REG_TDBAH`

#define E1000_REG_TDBAH 0x03804

`E1000_REG_TDLEN`

#define E1000_REG_TDLEN 0x03808

`E1000_REG_TDH`

#define E1000_REG_TDH 0x03810

`E1000_REG_TDT`

#define E1000_REG_TDT 0x03818

`E1000_REG_RCTL`

#define E1000_REG_RCTL 0x0100

`E1000_REG_RDBAL`

#define E1000_REG_RDBAL 0x02800

`E1000_REG_RDBAH`

#define E1000_REG_RDBAH 0x02804

`E1000_REG_RDLEN`

#define E1000_REG_RDLEN 0x02808

`E1000_REG_RDH`

#define E1000_REG_RDH 0x02810

`E1000_REG_RDT`

#define E1000_REG_RDT 0x02818

`E1000_REG_IMS`

#define E1000_REG_IMS 0x00D0

`E1000_REG_ICR`

#define E1000_REG_ICR 0x00C0

`E1000_TCTL_EN`

#define E1000_TCTL_EN (1 << 1)

`E1000_TCTL_PSP`

#define E1000_TCTL_PSP (1 << 3)

`E1000_TCTL_CT_SHIFT`

#define E1000_TCTL_CT_SHIFT 4

`E1000_TCTL_COLD_SHIFT`

#define E1000_TCTL_COLD_SHIFT 12

`E1000_RCTL_EN`

#define E1000_RCTL_EN (1 << 1)

`E1000_RCTL_BAM`

#define E1000_RCTL_BAM (1 << 15)

`E1000_RCTL_SECRC`

#define E1000_RCTL_SECRC (1 << 26)

`E1000_NUM_RX_DESC`

#define E1000_NUM_RX_DESC 64

`E1000_NUM_TX_DESC`

#define E1000_NUM_TX_DESC 64

`E1000_TXD_CMD_EOP`

#define E1000_TXD_CMD_EOP (1 << 0)

`E1000_TXD_CMD_IFCS`

#define E1000_TXD_CMD_IFCS (1 << 1)

`E1000_TXD_CMD_RS`

#define E1000_TXD_CMD_RS (1 << 3)

`E1000_TXD_STAT_DD`

#define E1000_TXD_STAT_DD (1 << 0)

`E1000_RXD_STAT_DD`

#define E1000_RXD_STAT_DD (1 << 0)

`E1000_RXD_STAT_EOP`

#define E1000_RXD_STAT_EOP (1 << 1)

`E1000_CTRL_RST`

#define E1000_CTRL_RST (1 << 26) // Software reset

`E1000_BAR_INDEX`

#define E1000_BAR_INDEX 0

`PCI_BAR0`

#define PCI_BAR0 0x10

`E1000_RX_BUF_SIZE`

#define E1000_RX_BUF_SIZE 2048

`E1000_MAX_TX_PACKET_SIZE`

#define E1000_MAX_TX_PACKET_SIZE 1518 // Standard Ethernet frame

`e1000_log(log_level, fmt, ...)`

#define e1000_log(log_level, fmt, ...)                                         \ log(LOG_SITE(e1000), LOG_HANDLE(e1000), log_level, fmt, ##__VA_ARGS__)