mirror of
https://github.com/BoredDevNL/BoredOS.git
synced 2026-05-15 10:48:38 +00:00
89bdb860dd
New feature(s): - Network stack - Piping commands into a udpsend message Bug fix(es): -N/A
99 lines
2.8 KiB
C
99 lines
2.8 KiB
C
#ifndef E1000_H
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#define E1000_H
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#include <stdint.h>
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#include <stddef.h>
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#include "pci.h"
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#define E1000_VENDOR_ID 0x8086
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#define E1000_DEVICE_ID_82540EM 0x100E
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#define E1000_REG_CTRL 0x0000
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#define E1000_REG_STATUS 0x0008
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#define E1000_REG_EERD 0x0014
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#define E1000_REG_ICR 0x00C0
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#define E1000_REG_IMS 0x00D0
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#define E1000_REG_RCTL 0x0100
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#define E1000_REG_TCTL 0x0400
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#define E1000_REG_TIPG 0x0410
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#define E1000_REG_RDBAL 0x2800
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#define E1000_REG_RDBAH 0x2804
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#define E1000_REG_RDLEN 0x2808
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#define E1000_REG_RDH 0x2810
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#define E1000_REG_RDT 0x2818
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#define E1000_REG_TDBAL 0x3800
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#define E1000_REG_TDBAH 0x3804
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#define E1000_REG_TDLEN 0x3808
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#define E1000_REG_TDH 0x3810
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#define E1000_REG_TDT 0x3818
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#define E1000_REG_RAL 0x5400
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#define E1000_REG_RAH 0x5404
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#define E1000_CTRL_RST (1 << 26)
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#define E1000_CTRL_SLU (1 << 6)
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#define E1000_RCTL_EN (1 << 1)
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#define E1000_RCTL_SBP (1 << 2)
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#define E1000_RCTL_UPE (1 << 3)
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#define E1000_RCTL_MPE (1 << 4)
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#define E1000_RCTL_LPE (1 << 5)
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#define E1000_RCTL_LBM_NONE (0 << 6)
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#define E1000_RCTL_RDMTS_HALF (0 << 8)
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#define E1000_RCTL_MO_36 (0 << 12)
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#define E1000_RCTL_BAM (1 << 15)
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#define E1000_RCTL_BSIZE_2048 (1 << 16)
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#define E1000_RCTL_SECRC (1 << 26)
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#define E1000_TCTL_EN (1 << 1)
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#define E1000_TCTL_PSP (1 << 3)
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#define E1000_TCTL_CT (0xF << 4)
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#define E1000_TCTL_COLD (0x3F << 12)
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#define E1000_ICR_TXDW (1 << 0)
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#define E1000_ICR_RXT0 (1 << 7)
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#define E1000_TX_RING_SIZE 32
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#define E1000_RX_RING_SIZE 32
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typedef struct {
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uint64_t buffer_addr;
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uint16_t length;
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uint8_t cso;
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uint8_t cmd;
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uint8_t status;
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uint8_t css;
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uint16_t special;
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} __attribute__((packed)) e1000_tx_desc_t;
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typedef struct {
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uint64_t buffer_addr;
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uint16_t length;
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uint16_t checksum;
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uint8_t status;
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uint8_t errors;
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uint16_t special;
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} __attribute__((packed)) e1000_rx_desc_t;
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typedef struct {
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volatile uint32_t* mmio_base;
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pci_device_t pci_dev;
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int initialized;
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struct { uint8_t bytes[6]; } mac_address;
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e1000_tx_desc_t* tx_descriptors;
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void* tx_buffers[E1000_TX_RING_SIZE];
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uint16_t tx_head;
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uint16_t tx_tail;
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e1000_rx_desc_t* rx_descriptors;
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void* rx_buffers[E1000_RX_RING_SIZE];
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uint16_t rx_head;
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uint16_t rx_tail;
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} e1000_device_t;
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int e1000_init(pci_device_t* pci_dev);
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static inline uint32_t e1000_read_reg(volatile uint32_t* mmio_base, uint16_t offset) { return mmio_base[offset / 4]; }
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static inline void e1000_write_reg(volatile uint32_t* mmio_base, uint16_t offset, uint32_t value) { mmio_base[offset / 4] = value; }
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e1000_device_t* e1000_get_device(void);
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int e1000_send_packet(const void* data, size_t length);
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int e1000_receive_packet(void* buffer, size_t buffer_size);
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#endif
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