/*! @brief the interrupt exception service function.
* @details The \cplat_irq_dispatch() function is the interrupt exception
* service function called. When an exception is set and the exception
* code indicates an interrupt (0x00).
*/
asmlinkage void plat_irq_dispatch(
struct pt_regs *regs /*!< registers of the interrupted task */
)
{
/* Get the current pending interrupt status */
unsigned long pending = read_c0_cause() & read_c0_status();
/*! @note Clear all pending interrupts before dispatching. The
interrupt information structure will call the "end" function
from the do_IRQ function that should re-enable the specific
interrupt while completing the interrupt handling (see
irq_chip structure). */
/* Disable all MIPS active pending interrupts */
clear_c0_status(pending);
/* These are the interrupts that are to be dispatched */
if( pending & (STATUSF_IP7|STATUSF_IP2) ) {
/* Dispatch timer interrupt (HW INT#5/IP7) */
if (pending & STATUSF_IP7)
brcm_mips_int7_dispatch(regs);
/* Dispatch shared interrupt (HW INT#0/IP2) */
if (pending & STATUSF_IP2)
brcm_mips_int2_dispatch(regs);
/* Return following the successful interrupt exception handling */
return;
}
/* Other interrupts are unhandled and treated as spurious interrupts */
spurious_interrupt(regs);
}
asmlinkage void plat_irq_dispatch(struct pt_regs *regs)
{
unsigned int pending = read_c0_cause() & read_c0_status();
if (pending & STATUSF_IP7)
brcm_mips_int7_dispatch(regs);
else if (pending & STATUSF_IP2)
brcm_mips_int2_dispatch(regs);
else
spurious_interrupt(regs);
}
asmlinkage void plat_irq_dispatch(struct pt_regs *regs)
{
unsigned int pend = ((read_c0_cause() & read_c0_status()) >> 8) & 0xff;
unsigned int shift;
while ((shift = ffs(pend)) != 0) {
shift--;
pend ^= 1 << shift;
if (shift == 2)
brcm_mips_int2_dispatch(regs);
#ifdef CONFIG_SMP
else if (unlikely(shift == 3))
brcm_mips_int3_dispatch(regs);
#endif
else
do_IRQ(MIPS_CPU_IRQ_BASE + shift);
}
}
asmlinkage void plat_irq_dispatch(struct pt_regs *regs)
{
unsigned int pending = read_c0_cause() & read_c0_status();
if (pending & STATUSF_IP7)
brcm_mips_int7_dispatch(regs);
else if (pending & STATUSF_IP2)
brcm_mips_int2_dispatch(regs);
#ifdef CONFIG_SMP
else if (pending & STATUSF_IP3)
brcm_mips_int3_dispatch(regs);
else if (pending & STATUSF_IP0)
brcm_mips_int0_dispatch(regs);
else if (pending & STATUSF_IP1)
brcm_mips_int1_dispatch(regs);
#endif
else
spurious_interrupt(regs);
}
asmlinkage void plat_irq_dispatch(struct pt_regs *regs)
{
unsigned int pending = read_c0_cause();
#if ! defined(CONFIG_MIPS_MT)
/* SMTC clears the status bit in genex.S */
pending &= read_c0_status();
#endif
if (pending & STATUSF_IP7)
brcm_mips_int7_dispatch(regs);
else if (pending & STATUSF_IP2)
brcm_mips_int2_dispatch(regs);
#if defined(CONFIG_SMP) && ! defined(CONFIG_MIPS_MT)
else if (pending & STATUSF_IP0)
brcm_mips_int0_dispatch(regs);
else if (pending & STATUSF_IP1)
brcm_mips_int1_dispatch(regs);
#endif
else
spurious_interrupt(regs);
}
