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#define NE_EEPROM 0x14
static inline void delay(void);
static unsigned char asix88796_eeprom_getbit(int ioaddr);
static void asix88796_eeprom_send(int ioaddr, int value);
static unsigned short asix88796_eeprom_get(int ioaddr);
static void asix88796_eeprom_setaddr(int ioaddr, int addr);
static void asix88796_eeprom_command(int ioaddr);
static void asix88796_eeprom_read(int ioaddr, unsigned char *buff);
static inline void delay(void)
{
ctrl_inw(0xa0000000);
}
static unsigned char asix88796_eeprom_getbit(int ioaddr)
{
unsigned char value;
outb(inb(ioaddr + NE_EEPROM) & 0x7f, ioaddr + NE_EEPROM);
delay();
value = (inb(ioaddr + NE_EEPROM) & 0x40) >> 6;
outb(inb(ioaddr + NE_EEPROM) | 0x80, ioaddr + NE_EEPROM);
delay();
return value;
}
static void asix88796_eeprom_send(int ioaddr, int value)
{
if (value)
outb(inb(ioaddr + NE_EEPROM) | 0x20, ioaddr + NE_EEPROM);
else
outb(inb(ioaddr + NE_EEPROM) & 0xdf, ioaddr + NE_EEPROM);
outb(inb(ioaddr + NE_EEPROM) & 0x7f, ioaddr + NE_EEPROM);
delay();
outb(inb(ioaddr + NE_EEPROM) | 0x80, ioaddr + NE_EEPROM);
delay();
outb(inb(ioaddr + NE_EEPROM) & 0xdf, ioaddr + NE_EEPROM);
}
static unsigned short asix88796_eeprom_get(int ioaddr)
{
unsigned short value = 0;
int i;
asix88796_eeprom_getbit(ioaddr);
for (i=0; i<16; i++) {
value <<= 1;
value |= asix88796_eeprom_getbit(ioaddr);
}
return value;
}
static void asix88796_eeprom_setaddr(int ioaddr, int addr)
{
asix88796_eeprom_send(ioaddr, addr & 0x0080);
asix88796_eeprom_send(ioaddr, addr & 0x0040);
asix88796_eeprom_send(ioaddr, addr & 0x0020);
asix88796_eeprom_send(ioaddr, addr & 0x0010);
asix88796_eeprom_send(ioaddr, addr & 0x0008);
asix88796_eeprom_send(ioaddr, addr & 0x0004);
asix88796_eeprom_send(ioaddr, addr & 0x0002);
asix88796_eeprom_send(ioaddr, addr & 0x0001);
}
static void asix88796_eeprom_command(int ioaddr)
{
asix88796_eeprom_send(ioaddr, 0);
asix88796_eeprom_send(ioaddr, 1);
asix88796_eeprom_send(ioaddr, 1);
asix88796_eeprom_send(ioaddr, 0);
}
static void asix88796_eeprom_read(int ioaddr, unsigned char *buff)
{
int i;
int addr = 0;
unsigned short value;
for (i=0; i<3; i++) {
outb(inb(ioaddr + NE_EEPROM) | 0x10, ioaddr + NE_EEPROM);
outb(inb(ioaddr + NE_EEPROM) & 0xdf, ioaddr + NE_EEPROM);
delay();
asix88796_eeprom_command(ioaddr);
asix88796_eeprom_setaddr(ioaddr, addr++);
value = asix88796_eeprom_get(ioaddr);
*buff++ = (unsigned char)(value & 0xff);
*buff++ = (unsigned char)((value >> 8) & 0xff);
outb(inb(ioaddr + NE_EEPROM) & 0x7f, ioaddr + NE_EEPROM);
outb(inb(ioaddr + NE_EEPROM) & 0xdf, ioaddr + NE_EEPROM);
outb(inb(ioaddr + NE_EEPROM) & 0xef, ioaddr + NE_EEPROM);
}
}
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