plx9030触发pci中断

if(((SWAB_16(PLX_INT(0x4C)))&0x04)==0x04)
{
                ErrNo =  *(UINT16*)(g_MemBase+0XFFFE*2);
/*logMsg("Int1 exist in Open422Device().\n",0,0,0,0,0,0);*/
}
PLX_INT(0x4C) = SWAB_16(0x0242); /*added by sgh-2011-6-1 for disable PCI interrupt*/
if(((SWAB_16(PLX_INT(0x4C)))&0x04)==0x04)
{
                ErrNo =  *(UINT16*)(g_MemBase+0XFFFE*2);
/*logMsg("Int2 exist in Open422Device()\n",0,0,0,0,0,0);*/
}
///////////////////
PLX_INT(0x4C) = SWAB_16(0x0243);
taskDelay(5);
if(((SWAB_16(PLX_INT(0x4C)))&0x04)==0x04)
                {
ErrNo =  *(UINT16*)(g_MemBase+0XFFFE*2);
/*logMsg("Int before Start422()\n",0,0,0,0,0,0);*/

清中断：
PLX_INT(0x4C) = PLX_INT(0x4C) |0x01;