minix/drivers/e1000/e1000.h

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/**
* @file e1000.h
*
* @brief Device driver implementation declarations for the
* Intel Pro/1000 Gigabit Ethernet card(s).
*
* Parts of this code is based on the DragonflyBSD (FreeBSD)
* implementation, and the fxp driver for Minix 3.
*
* @see http://svn.freebsd.org/viewvc/base/head/sys/dev/e1000/
* @see fxp.c
*
* @author Niek Linnenbank <nieklinnenbank@gmail.com>
* @date September 2009
*
*/
#ifndef __E1000_H
#define __E1000_H
#include <minix/drivers.h>
#include <stdlib.h>
#include <net/hton.h>
#include <net/gen/ether.h>
#include <net/gen/eth_io.h>
#include <machine/pci.h>
#include <minix/ds.h>
#include "e1000_hw.h"
/**
* @name Constants.
* @{
*/
/** Number of receive descriptors per card. */
#define E1000_RXDESC_NR 256
/** Number of transmit descriptors per card. */
#define E1000_TXDESC_NR 256
/** Number of I/O vectors to use. */
#define E1000_IOVEC_NR 16
/** Size of each I/O buffer per descriptor. */
#define E1000_IOBUF_SIZE 2048
/** Debug verbosity. */
#define E1000_VERBOSE 1
/** MAC address override variable. */
#define E1000_ENVVAR "E1000ETH"
/**
* @}
*/
/**
* @name Status Flags.
* @{
*/
/** Card has been detected on the PCI bus. */
#define E1000_DETECTED (1 << 0)
/** Card is enabled. */
#define E1000_ENABLED (1 << 1)
/** Client has requested to receive packets. */
#define E1000_READING (1 << 2)
/** Client has requested to write packets. */
#define E1000_WRITING (1 << 3)
/** Received some packets on the card. */
#define E1000_RECEIVED (1 << 4)
/** Transmitted some packets on the card. */
#define E1000_TRANSMIT (1 << 5)
/**
* @}
*/
/**
* @name Macros.
* @{
*/
/**
* @brief Print a debug message.
* @param level Debug verbosity level.
* @param args Arguments to printf().
*/
#define E1000_DEBUG(level, args) \
if ((level) <= E1000_VERBOSE) \
{ \
printf args; \
} \
/**
* Read a byte from flash memory.
* @param e e1000_t pointer.
* @param reg Register offset.
*/
#define E1000_READ_FLASH_REG(e,reg) \
*(u32_t *) (((e)->flash) + (reg))
/**
* Read a 16-bit word from flash memory.
* @param e e1000_t pointer.
* @param reg Register offset.
*/
#define E1000_READ_FLASH_REG16(e,reg) \
*(u16_t *) (((e)->flash) + (reg))
/**
* Write a 16-bit word to flash memory.
* @param e e1000_t pointer.
* @param reg Register offset.
* @param value New value.
*/
#define E1000_WRITE_FLASH_REG(e,reg,value) \
*((u32_t *) (((e)->flash) + (reg))) = (value)
/**
* Write a 16-bit word to flash memory.
* @param e e1000_t pointer.
* @param reg Register offset.
* @param value New value.
*/
#define E1000_WRITE_FLASH_REG16(e,reg,value) \
*((u16_t *) (((e)->flash) + (reg))) = (value)
/**
* @}
*/
/**
* @brief Describes the state of an Intel Pro/1000 card.
*/
typedef struct e1000
{
char name[8]; /**< String containing the device name. */
int status; /**< Describes the card's current state. */
int irq; /**< Interrupt Request Vector. */
int irq_hook; /**< Interrupt Request Vector Hook. */
int revision; /**< Hardware Revision Number. */
u8_t *regs; /**< Memory mapped hardware registers. */
u8_t *flash; /**< Optional flash memory. */
u32_t flash_base_addr; /**< Flash base address. */
ether_addr_t address; /**< Ethernet MAC address. */
u16_t (*eeprom_read)(void *, int reg); /**< Function to read
the EEPROM. */
int eeprom_done_bit; /**< Offset of the EERD.DONE bit. */
int eeprom_addr_off; /**< Offset of the EERD.ADDR field. */
e1000_rx_desc_t *rx_desc; /**< Receive Descriptor table. */
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phys_bytes rx_desc_p; /**< Physical Receive Descriptor Address. */
int rx_desc_count; /**< Number of Receive Descriptors. */
char *rx_buffer; /**< Receive buffer returned by malloc(). */
int rx_buffer_size; /**< Size of the receive buffer. */
e1000_tx_desc_t *tx_desc; /**< Transmit Descriptor table. */
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phys_bytes tx_desc_p; /**< Physical Transmit Descriptor Address. */
int tx_desc_count; /**< Number of Transmit Descriptors. */
char *tx_buffer; /**< Transmit buffer returned by malloc(). */
int tx_buffer_size; /**< Size of the transmit buffer. */
int client; /**< Process ID being served by e1000. */
message rx_message; /**< Read message received from client. */
message tx_message; /**< Write message received from client. */
size_t rx_size; /**< Size of one packet received. */
}
e1000_t;
#endif /* __E1000_H */