static int fm93c56a_select(struct scsi_qla_host * ha)
{
DEBUG5(printk(KERN_ERR "fm93c56a_select:\n"));
ha->eeprom_cmd_data = AUBURN_EEPROM_CS_1 | 0x000f0000;
eeprom_cmd(ha->eeprom_cmd_data, ha);
return 1;
}
static int fm93c56a_datain(struct scsi_qla_host * ha, unsigned short *value)
{
int i;
int data = 0;
int dataBit;
/* Read the data bits
* The first bit is a dummy. Clock right over it. */
for (i = 0; i < eeprom_no_data_bits(ha); i++) {
eeprom_cmd(ha->eeprom_cmd_data |
AUBURN_EEPROM_CLK_RISE, ha);
eeprom_cmd(ha->eeprom_cmd_data |
AUBURN_EEPROM_CLK_FALL, ha);
dataBit = (readw(isp_nvram(ha)) & AUBURN_EEPROM_DI_1) ? 1 : 0;
data = (data << 1) | dataBit;
}
*value = data;
return 1;
}
unsigned short ip22_eeprom_read(unsigned int *ctrl, int reg)
{
unsigned short res = 0;
int i;
__raw_writel(__raw_readl(ctrl) & ~EEPROM_EPROT, ctrl);
eeprom_cs_on(ctrl);
eeprom_cmd(ctrl, EEPROM_READ, reg);
/* clock the data ouf of serial mem */
for (i = 0; i < 16; i++) {
__raw_writel(__raw_readl(ctrl) & ~EEPROM_ECLK, ctrl);
delay();
__raw_writel(__raw_readl(ctrl) | EEPROM_ECLK, ctrl);
delay();
res <<= 1;
if (__raw_readl(ctrl) & EEPROM_DATI)
res |= 1;
}
eeprom_cs_off(ctrl);
return res;
}
static int fm93c56a_cmd(struct scsi_qla_host * ha, int cmd, int addr)
{
int i;
int mask;
int dataBit;
int previousBit;
/* Clock in a zero, then do the start bit. */
eeprom_cmd(ha->eeprom_cmd_data | AUBURN_EEPROM_DO_1, ha);
eeprom_cmd(ha->eeprom_cmd_data | AUBURN_EEPROM_DO_1 |
AUBURN_EEPROM_CLK_RISE, ha);
eeprom_cmd(ha->eeprom_cmd_data | AUBURN_EEPROM_DO_1 |
AUBURN_EEPROM_CLK_FALL, ha);
mask = 1 << (FM93C56A_CMD_BITS - 1);
/* Force the previous data bit to be different. */
previousBit = 0xffff;
for (i = 0; i < FM93C56A_CMD_BITS; i++) {
dataBit =
(cmd & mask) ? AUBURN_EEPROM_DO_1 : AUBURN_EEPROM_DO_0;
if (previousBit != dataBit) {
/*
* If the bit changed, then change the DO state to
* match.
*/
eeprom_cmd(ha->eeprom_cmd_data | dataBit, ha);
previousBit = dataBit;
}
eeprom_cmd(ha->eeprom_cmd_data | dataBit |
AUBURN_EEPROM_CLK_RISE, ha);
eeprom_cmd(ha->eeprom_cmd_data | dataBit |
AUBURN_EEPROM_CLK_FALL, ha);
cmd = cmd << 1;
}
mask = 1 << (eeprom_no_addr_bits(ha) - 1);
/* Force the previous data bit to be different. */
previousBit = 0xffff;
for (i = 0; i < eeprom_no_addr_bits(ha); i++) {
dataBit = addr & mask ? AUBURN_EEPROM_DO_1 :
AUBURN_EEPROM_DO_0;
if (previousBit != dataBit) {
/*
* If the bit changed, then change the DO state to
* match.
*/
eeprom_cmd(ha->eeprom_cmd_data | dataBit, ha);
previousBit = dataBit;
}
eeprom_cmd(ha->eeprom_cmd_data | dataBit |
AUBURN_EEPROM_CLK_RISE, ha);
eeprom_cmd(ha->eeprom_cmd_data | dataBit |
AUBURN_EEPROM_CLK_FALL, ha);
addr = addr << 1;
}
return 1;
}
static int fm93c56a_deselect(struct scsi_qla_host * ha)
{
ha->eeprom_cmd_data = AUBURN_EEPROM_CS_0 | 0x000f0000;
eeprom_cmd(ha->eeprom_cmd_data, ha);
return 1;
}
