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#include "rtl8139.h"
#include "string.h"
#include "stdio.h"
#define DEBUG
/*
Offset (from IO base) Size Name
0x08 8 MAR0-7
0x30 4 RBSTART
0x37 1 CMD
0x3C 2 IMR
0x3E 2 ISR
*/
static rtl8139_vtable_t const rtl8139_vtable = {
{
rtl8139_activate,
rtl8139_deactivate,
rtl8139_deinit,
rtl8139_print_info
}
};
// registers
#define REG_MAC0 0x00
#define REG_CMD 0x37
// commands for REG_CMD register
#define CR_RESET 0x08
void rtl8139_init( rtl8139_t *rtl8139, pci_device_descriptor_t *descriptor, interrupt_t *interrupt, void *context )
{
memset( rtl8139, 0, sizeof( rtl8139_t ) );
network_init( (network_t *)rtl8139, interrupt, context );
puts( "Initializing driver for Realtek 8139 network card.." );
for( int i = 0; i < NOF_MAC_REGISTERS; i++ ) {
port8_init( &rtl8139->MAC_port[i], descriptor->port_base + REG_MAC0 + i );
}
port8_init( &rtl8139->CMD_port, descriptor->port_base + REG_CMD );
// software reset
port8_write( &rtl8139->CMD_port, CR_RESET );
// get MAC
for( int i = 0; i < NOF_MAC_REGISTERS; i++ ) {
rtl8139->base.mac_address.byte[i] = port8_read( &rtl8139->MAC_port[i] );
}
#ifdef DEBUG
char buf[20];
network_mac_to_string( rtl8139->base.mac_address, buf, 20 );
printf( "rtl8139 NIC at I/O base 0x%X, interrupt 0x%X, MAC: %s\n",
descriptor->port_base, descriptor->interrupt, buf
);
#endif
interrupt_handler_init( &rtl8139->interrupt_handler, IRQ_BASE + descriptor->interrupt, interrupt, rtl8139_handle_interrupt, rtl8139 );
interrupts_register_interrupt_handler( rtl8139->interrupt_handler );
((driver_t *)rtl8139)->vtable = (driver_vtable_t *)&rtl8139_vtable;
}
void rtl8139_activate( void *obj )
{
puts( "Activating driver for Realtek 8139 network card.." );
rtl8139_t *rtl8139 = obj;
}
void rtl8139_deactivate( void *obj )
{
puts( "Dectivating driver for Realtek 8139 network card.." );
rtl8139_t *rtl8139 = obj;
}
void rtl8139_deinit( void *obj )
{
// nothing to do
}
uint32_t rtl8139_handle_interrupt( interrupt_handler_t *handler, uint32_t esp )
{
rtl8139_t *rtl8139 = (rtl8139_t *)handler->driver;
#ifdef DEBUG
printf( "RTL INTERRUPT\n" );
#endif
return esp;
}
void rtl8139_print_info( void *obj )
{
puts( "Realtek 8139 network card driver" );
}
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