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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
#define REG_TCR 0x40
#define REG_RCR 0x44
// commands for REG_CMD register
#define CMD_RESET 0x10
#define CMD_RECEIVER_ENABLE 0x08
#define CMD_TRANSMITTER_ENABLE 0x04
#define TCR_MODEL_VERSION_AM 0x7C000000
#define TCR_MODEL_VERSION_BM 0x00C00000
#define TCR_MODEL_VERSION_RTL8139 0x60000000
#define TCR_MODEL_VERSION_RTL8139A 0x70000000
#define TCR_MODEL_VERSION_RTL8139B 0x78000000
#define TCR_MODEL_VERSION_RTL8130 0x78000000
#define TCR_MODEL_VERSION_RTL8139AG 0x74000000
#define TCR_MODEL_VERSION_RTL8139C 0x74000000
#define TCR_MODEL_VERSION_RTL8100 0x78800000
#define TCR_MODEL_VERSION_RTL8100B 0x74400000
#define TCR_MODEL_VERSION_RTL8139CP 0x74800000
#define TCR_MODEL_VERSION_RTL8101 0x74C00000
#define TCR_IFG_STANDARD 0x03000000
/*
#define TCR_IFG_STANDARD (3 << 24)
#define TCR_MXDMA_512 (5 << 8)
#define TCR_MXDMA_1024 (6 << 8)
#define TCR_MXDMA_2048 (7 << 8)
#define RCR_MXDMA_512 (5 << 8)
#define RCR_MXDMA_1024 (6 << 8)
#define RCR_MXDMA_UNLIMITED (7 << 8)
#define RCR_ACCEPT_BROADCAST (1 << 3)
#define RCR_ACCEPT_MULTICAST (1 << 2)
#define RCR_ACCEPT_PHYS_MATCH (1 << 1)
*/
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 );
port32_init( &rtl8139->TCR_port, descriptor->port_base + REG_TCR );
port32_init( &rtl8139->RCR_port, descriptor->port_base + REG_RCR );
// software reset, the CR_RESET bit remains high till the
// reset is finished
port8_write( &rtl8139->CMD_port, CMD_RESET );
while( ( port8_read( &rtl8139->CMD_port ) & CMD_RESET ) == CMD_RESET );
// get MAC
for( int i = 0; i < NOF_MAC_REGISTERS; i++ ) {
rtl8139->base.mac_address.byte[i] = port8_read( &rtl8139->MAC_port[i] );
}
// enable receiver and transmitter early
port8_write( &rtl8139->CMD_port, CMD_RECEIVER_ENABLE | CMD_TRANSMITTER_ENABLE );
// get model
uint32_t model_id = port32_read( &rtl8139->TCR_port ) & ( TCR_MODEL_VERSION_AM | TCR_MODEL_VERSION_BM );
switch( model_id ) {
case TCR_MODEL_VERSION_RTL8139:
rtl8139->model = "RTL8139";
break;
case TCR_MODEL_VERSION_RTL8139A:
rtl8139->model = "RTL8139A";
break;
//case TCR_MODEL_VERSION_RTL8139B:
case TCR_MODEL_VERSION_RTL8130:
rtl8139->model = "RTL8130/RTL8130B";
break;
// case TCR_MODEL_VERSION_RTL8139AG:
case TCR_MODEL_VERSION_RTL8139C:
rtl8139->model = "RTL8139A-G/RTL8139C";
break;
case TCR_MODEL_VERSION_RTL8100:
rtl8139->model = "RTL8100";
break;
case TCR_MODEL_VERSION_RTL8100B:
rtl8139->model = "RTL8100B";
break;
case TCR_MODEL_VERSION_RTL8139CP:
rtl8139->model = "RTL8139C+";
break;
case TCR_MODEL_VERSION_RTL8101:
rtl8139->model = "RTL8101";
break;
default:
rtl8139->model = NULL;
break;
}
/* TODO:
port32_write( &rtl8139->TCR_port, TCR_IFG_STANDARD );
port32_write( &rtl8139->RCR_port, );
TCR RCR
DEBUG_MSG("Inititalisiere RCR/TCR");
write_register_dword(netcard, REG_RECEIVE_CONFIGURATION,
RCR_MXDMA_UNLIMITED | RCR_ACCEPT_BROADCAST | RCR_ACCEPT_PHYS_MATCH);
// DMA burst, 2k is max, what are other operating systems doing?
write_register_dword(netcard, REG_TRANSMIT_CONFIGURATION,
TCR_IFG_STANDARD | TCR_MXDMA_2048);
*/
#ifdef DEBUG
char buf[20];
char buf2[30];
snprintf( buf2, 30, "unknown submodel 0x%X", model_id );
network_mac_to_string( rtl8139->base.mac_address, buf, 20 );
printf( "rtl8139 NIC type %s\n at I/O base 0x%X, interrupt 0x%X, MAC: %s\n",
( rtl8139->model != NULL ) ? rtl8139->model : buf2,
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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