static irqreturn_t eata_pio_int_handler(int irq, void *dev_id)
{
unsigned int eata_stat = 0xfffff;
struct scsi_cmnd *cmd;
hostdata *hd;
struct eata_ccb *cp;
unsigned long base;
unsigned int x, z;
struct Scsi_Host *sh;
unsigned short zwickel = 0;
unsigned char stat, odd;
irqreturn_t ret = IRQ_NONE;
for (x = 1, sh = first_HBA; x <= registered_HBAs; x++, sh = SD(sh)->prev)
{
if (sh->irq != irq)
continue;
if (inb(sh->base + HA_RSTATUS) & HA_SBUSY)
continue;
int_counter++;
ret = IRQ_HANDLED;
hd = SD(sh);
cp = &hd->ccb[0];
cmd = cp->cmd;
base = cmd->device->host->base;
do {
stat = inb(base + HA_RSTATUS);
if (stat & HA_SDRQ) {
if (cp->DataIn) {
z = 256;
odd = 0;
while ((cmd->SCp.Status) && ((z > 0) || (odd))) {
if (odd) {
*(cmd->SCp.ptr) = zwickel >> 8;
IncStat(&cmd->SCp, 1);
odd = 0;
}
x = min_t(unsigned int, z, cmd->SCp.this_residual / 2);
insw(base + HA_RDATA, cmd->SCp.ptr, x);
z -= x;
IncStat(&cmd->SCp, 2 * x);
if ((z > 0) && (cmd->SCp.this_residual == 1)) {
zwickel = inw(base + HA_RDATA);
*(cmd->SCp.ptr) = zwickel & 0xff;
IncStat(&cmd->SCp, 1);
z--;
odd = 1;
}
}
while (z > 0) {
zwickel = inw(base + HA_RDATA);
z--;
}
} else { /* cp->DataOut */
odd = 0;
z = 256;
while ((cmd->SCp.Status) && ((z > 0) || (odd))) {
if (odd) {
zwickel += *(cmd->SCp.ptr) << 8;
IncStat(&cmd->SCp, 1);
outw(zwickel, base + HA_RDATA);
z--;
odd = 0;
}
x = min_t(unsigned int, z, cmd->SCp.this_residual / 2);
outsw(base + HA_RDATA, cmd->SCp.ptr, x);
z -= x;
IncStat(&cmd->SCp, 2 * x);
if ((z > 0) && (cmd->SCp.this_residual == 1)) {
zwickel = *(cmd->SCp.ptr);
zwickel &= 0xff;
IncStat(&cmd->SCp, 1);
odd = 1;
}
}
while (z > 0 || odd) {
outw(zwickel, base + HA_RDATA);
z--;
odd = 0;
}
}
}
}
void eata_pio_int_handler(int irq, void *dev_id, struct pt_regs * regs)
{
uint eata_stat = 0xfffff;
Scsi_Cmnd *cmd;
hostdata *hd;
struct eata_ccb *cp;
uint base;
ulong flags;
uint x,z;
struct Scsi_Host *sh;
ushort zwickel=0;
unchar stat,odd;
save_flags(flags);
cli();
for (x = 1, sh = first_HBA; x <= registered_HBAs; x++, sh = SD(sh)->prev) {
if (sh->irq != irq)
continue;
if (inb((uint)sh->base + HA_RSTATUS) & HA_SBUSY)
continue;
int_counter++;
hd=SD(sh);
cp = &hd->ccb[0];
cmd = cp->cmd;
base = (uint) cmd->host->base;
do
{
stat=inb(base+HA_RSTATUS);
if (stat&HA_SDRQ) {
if (cp->DataIn)
{
z=256; odd=FALSE;
while ((cmd->SCp.Status)&&((z>0)||(odd)))
{
if (odd)
{
*(cmd->SCp.ptr)=zwickel>>8;
IncStat(&cmd->SCp,1);
odd=FALSE;
}
x=min(z,cmd->SCp.this_residual/2);
insw(base+HA_RDATA,cmd->SCp.ptr,x);
z-=x;
IncStat(&cmd->SCp,2*x);
if ((z>0)&&(cmd->SCp.this_residual==1))
{
zwickel=inw(base+HA_RDATA);
*(cmd->SCp.ptr)=zwickel&0xff;
IncStat(&cmd->SCp,1); z--;
odd=TRUE;
}
}
while (z>0) {
zwickel=inw(base+HA_RDATA);
z--;
}
}
else /* cp->DataOut */
{
odd=FALSE; z=256;
while ((cmd->SCp.Status)&&((z>0)||(odd)))
{
if (odd)
{
zwickel+=*(cmd->SCp.ptr)<<8;
IncStat(&cmd->SCp,1);
outw(zwickel,base+HA_RDATA);
z--;
odd=FALSE;
}
x=min(z,cmd->SCp.this_residual/2);
outsw(base+HA_RDATA,cmd->SCp.ptr,x);
z-=x;
IncStat(&cmd->SCp,2*x);
if ((z>0)&&(cmd->SCp.this_residual==1))
{
zwickel=*(cmd->SCp.ptr);
zwickel&=0xff;
IncStat(&cmd->SCp,1);
odd=TRUE;
}
}
while (z>0||odd) {
outw(zwickel,base+HA_RDATA);
z--;
odd=FALSE;
}
}
}
}
