static uint8
cs8900a_output (struct device_desc *dev, uint8 * buf, uint16 packet_len)
{
struct net_device *net_dev = (struct net_device *) dev->dev;
struct net_cs8900a_io *io = (struct net_cs8900a_io *) dev->data;
int len;
//printf("%s: packet_len:%d\n", __FUNCTION__, packet_len);
#if 0
print_packet (buf, packet_len);
#endif
if ((len = net_dev->net_write (net_dev, buf, packet_len)) == -1) {
fprintf (stderr, "write to tapif error in skyeye-ne2k.c\n");
return -1;
}
io->ctrl_st[CtrlStNum (PP_TxEvent)] |= 0x100;
io->ctrl_st[CtrlStNum (PP_BusST)] |= Rdy4TxNOW;
if (io->ctrl_st[CtrlStNum (PP_BusCTL)] & EnableRQ) {
set_time (io->index, packet_len);
io->need_update = 1;
net_cs8900a_set_update_intr (dev);
}
return 0;
}
static void
ctrl_status_read (struct device_desc *dev, uint16 * data)
{
struct net_device *net_dev = (struct net_device *) dev->dev;
struct net_cs8900a_io *io = (struct net_cs8900a_io *) dev->data;
*data = io->ctrl_st[CtrlStNum (io->pp_address)];
//printf("%s: addr %x, data %x\n", __FUNCTION__, io->pp_address, *data);
}
static void
net_cs8900a_reset (struct device_desc *dev)
{
struct net_device *net_dev = (struct net_device *) dev->dev;
struct net_cs8900a_io *io = (struct net_cs8900a_io *) dev->data;
int i;
eeprom_reset(dev);
/* set ProductID: rev_d */
io->product_id[0] = EISA_REG_CODE;
io->product_id[1] = CS8900A | (REV_D << 8);
/* see section 4.10.5 */
io->pp_address |= 0x3000;
/* set control and status registers low 6 bits. see P49. */
for (i = 0; i < 16; i++) {
io->ctrl_st[i] |= i * 2 + 1;
io->ctrl_st[i + 16] |= i * 2;
}
io->ctrl_st[CtrlStNum (PP_BusST)] |= Rdy4TxNOW;
/*init smdk2410_macaddr*/
memcpy (io->smdk2410_macaddr, net_dev->macaddr, 6);
/* init tx/rx buffer */
if (!io->rx_frame)
io->rx_frame = (uint16 *) malloc (Rx_Frame_Count);
memset (io->rx_frame, 0, Rx_Frame_Count);
io->rx_status_p = &(io->rx_frame[0]);
io->rx_length_p = &(io->rx_frame[1]);
io->rx_head = io->rx_tail = 0;
if (!io->tx_frame)
io->tx_frame = (uint16 *) malloc (Tx_Frame_Count);
memset (io->tx_frame, 0, Tx_Frame_Count);
io->tx_head = io->tx_tail = 0;
io->ctrl_st[CtrlStNum (PP_SelfST)] |= INITD;
io->ctrl_st[CtrlStNum (PP_LineST)] |= LINK_OK;
io->ctrl_st[CtrlStNum (PP_TxEvent)] &= 0x3f;
}
static void
cs8900a_input (struct device_desc *dev)
{
struct net_device *net_dev = (struct net_device *) dev->dev;
struct net_cs8900a_io *io = (struct net_cs8900a_io *) dev->data;
int packet_len, cs8900a_len;
uint8 *bufptr;
/*When the CS8900A commits buffer space to a par-
ticular held receive frame ,data from subsequent frames can be written P85*/
if (io->ctrl_st[CtrlStNum (PP_RxEvent)] & 0x100)
return;
bufptr = (uint8 *) & (io->rx_frame[2]);
packet_len = net_dev->net_read (net_dev, bufptr, Rx_Max_Count);
if (packet_len < 0)
return;
*(io->rx_status_p) |= RxOK;
*(io->rx_length_p) = packet_len;
io->rx_head = 2;
io->rx_head = io->rx_head + ((packet_len + 1) / 2) - 1;
io->rx_tail = 0;
//printf("io->rx_head:%d, io->rx_tail:%d, packet_len:%d\n", io->rx_head, io->rx_tail, packet_len);
#if 0
print_packet (bufptr, packet_len);
#endif
io->ctrl_st[CtrlStNum (PP_RxEvent)] |= 0x100; //TxOK
if (io->ctrl_st[CtrlStNum (PP_BusCTL)] & EnableRQ) {
//printf("%s:%x, packet_len:%d\n", __FUNCTION__, io->ctrl_st[CtrlStNum(PP_RxEvent)], packet_len);
set_time (io->index, packet_len);
io->need_update = 1;
net_cs8900a_set_update_intr (dev);
}
}
static void
ctrl_status_write (struct device_desc *dev, uint16 data)
{
struct net_device *net_dev = (struct net_device *) dev->dev;
struct net_cs8900a_io *io = (struct net_cs8900a_io *) dev->data;
io->ctrl_st[CtrlStNum (io->pp_address)] = data;
if (io->pp_address==PP_SelfCTL)
{
if (data&RESET)
net_cs8900a_reset(dev);
}
//printf("%s: addr %x, data %x\n", __FUNCTION__, io->pp_address, data);
}
/* ISQ read*/
static void
isq_read (struct device_desc *dev, uint16 * data)
{
struct net_device *net_dev = (struct net_device *) dev->dev;
struct net_cs8900a_io *io = (struct net_cs8900a_io *) dev->data;
io->ctrl_st[CtrlStNum (PP_ISQ)] = 0x0;
if (io->ctrl_st[CtrlStNum (PP_RxEvent)] & 0xffc0) {
io->ctrl_st[CtrlStNum (PP_ISQ)] =
io->ctrl_st[CtrlStNum (PP_RxEvent)];
//io->ctrl_st[CtrlStNum (PP_RxEvent)] &= 0x3f;
}
else if (io->ctrl_st[CtrlStNum (PP_TxEvent)] & 0xffc0) {
io->ctrl_st[CtrlStNum (PP_ISQ)] =
io->ctrl_st[CtrlStNum (PP_TxEvent)];
io->ctrl_st[CtrlStNum (PP_TxEvent)] &= 0x3f;
}
*data = io->ctrl_st[CtrlStNum (PP_ISQ)];
}
static void
frame_read (struct device_desc *dev, uint16 * data)
{
struct net_device *net_dev = (struct net_device *) dev->dev;
struct net_cs8900a_io *io = (struct net_cs8900a_io *) dev->data;
if (io->rx_tail > io->rx_head) {
io->rx_head = io->rx_tail = 0;
return;
}
*data = io->rx_frame[io->rx_tail];
if (io->rx_tail==io->rx_head) {
io->ctrl_st[CtrlStNum (PP_RxEvent)] &= ~0x100;
}
io->rx_tail++;
}
static void
eeprom_reset (struct device_desc *dev)
{
struct net_device *net_dev = (struct net_device *) dev->dev;
struct net_cs8900a_io *io = (struct net_cs8900a_io *) dev->data;
uint8 offset, checksum = 0, *buf;
uint16 eeprom_val[17] = { 0xa120,
0x2020, 0x0300, 0x0003, 0x0001,
0x502c, 0xe000, 0x000f, 0x0, 0xd, 0xc000, 0xf,
0x2158, 0x0010, 0x0, 0x0,
0x2800
};
/* set eeprom mac address */
eeprom_val[13] = net_dev->macaddr[0] | (net_dev->macaddr[1] << 8);
eeprom_val[14] = net_dev->macaddr[2] | (net_dev->macaddr[3] << 8);
eeprom_val[15] = net_dev->macaddr[4] | (net_dev->macaddr[5] << 8);
/* re-compute checksum. */
buf = (uint8 *) eeprom_val;
for (offset = 0; offset < (sizeof (eeprom_val) - 2); offset++)
checksum += buf[offset];
eeprom_val[16] = ((uint8) (0x100 - checksum)) << 8;
/* fill eeprom. */
memcpy (io->eeprom, eeprom_val, sizeof (eeprom_val));
/* others */
io->eeprom_writable = 1;
io->ctrl_st[CtrlStNum (PP_SelfST)] |= EEPROMpresent | EEPROMOK;
memcpy (io->ieee_addr, net_dev->macaddr, 6);
printf ("In epprom_reset(io->ieee_addr) mac addr=%x:%x:%x:%x:%x:%x\n", io->ieee_addr[0], io->ieee_addr[1], io->ieee_addr[2], io->ieee_addr[3], io->ieee_addr[4], io->ieee_addr[5]);
printf ("In epprom_reset(net->macaddr) mac addr=%x:%x:%x:%x:%x:%x\n", net_dev->macaddr[0], net_dev->macaddr[1], net_dev->macaddr[2], net_dev->macaddr[3], net_dev->macaddr[4], net_dev->macaddr[5]);
}