- u32 uic_msr;
- u32 msr_shift;
- int vec;
-
- /*
- * Read masked interrupt status register to determine interrupt source
- */
- uic_msr = get_dcr(uic_base + UIC_MSR);
- msr_shift = uic_msr;
- vec = vec_base;
-
- while (msr_shift != 0) {
- if (msr_shift & 0x80000000) {
- /*
- * Increment irq counter (for debug purpose only)
- */
- irq_vecs[vec].count++;
-
- if (irq_vecs[vec].handler != NULL) {
- /* call isr */
- (*irq_vecs[vec].handler)(irq_vecs[vec].arg);
- } else {
- set_dcr(uic_base + UIC_ER,
- get_dcr(uic_base + UIC_ER) & ~UIC_MASK(vec));
- printf("Masking bogus interrupt vector %d"
- " (UIC_BASE=0x%x)\n", vec, uic_base);
- }
-
- /*
- * After servicing the interrupt, we have to remove the
- * status indicator
- */
- set_dcr(uic_base + UIC_SR, UIC_MASK(vec));
- }
-
- /*
- * Shift msr to next position and increment vector
- */
- msr_shift <<= 1;
- vec++;
- }