| /* |
| * int-handler.S |
| * |
| * Based on the cobalt handler. |
| */ |
| #include <asm/asm.h> |
| #include <asm/mipsregs.h> |
| #include <asm/addrspace.h> |
| #include <asm/regdef.h> |
| #include <asm/stackframe.h> |
| |
| /* |
| * galileo_handle_int - |
| * We check for the timer first, then check PCI ints A and D. |
| * Then check for serial IRQ and fall through. |
| */ |
| .align 5 |
| .set reorder |
| .set noat |
| NESTED(galileo_handle_int, PT_SIZE, sp) |
| SAVE_ALL |
| CLI |
| .set at |
| mfc0 t0,CP0_CAUSE |
| mfc0 t2,CP0_STATUS |
| |
| and t0,t2 |
| |
| andi t1,t0,STATUSF_IP4 /* int2 hardware line (timer) */ |
| bnez t1,ll_gt64120_irq |
| andi t1,t0,STATUSF_IP2 /* int0 hardware line */ |
| bnez t1,ll_pci_intA |
| andi t1,t0,STATUSF_IP5 /* int3 hardware line */ |
| bnez t1,ll_pci_intD |
| andi t1,t0,STATUSF_IP6 /* int4 hardware line */ |
| bnez t1,ll_serial_irq |
| andi t1,t0,STATUSF_IP7 /* compare int */ |
| bnez t1,ll_compare_irq |
| nop |
| |
| /* wrong alarm or masked ... */ |
| j spurious_interrupt |
| nop |
| END(galileo_handle_int) |
| |
| |
| .align 5 |
| .set reorder |
| ll_gt64120_irq: |
| li a0,4 |
| move a1,sp |
| jal do_IRQ |
| nop |
| j ret_from_irq |
| nop |
| |
| .align 5 |
| .set reorder |
| ll_compare_irq: |
| li a0,7 |
| move a1,sp |
| jal do_IRQ |
| nop |
| j ret_from_irq |
| nop |
| |
| .align 5 |
| .set reorder |
| ll_pci_intA: |
| move a0,sp |
| jal pci_intA |
| nop |
| j ret_from_irq |
| nop |
| |
| #if 0 |
| .align 5 |
| .set reorder |
| ll_pci_intB: |
| move a0,sp |
| jal pci_intB |
| nop |
| j ret_from_irq |
| nop |
| |
| .align 5 |
| .set reorder |
| ll_pci_intC: |
| move a0,sp |
| jal pci_intC |
| nop |
| j ret_from_irq |
| nop |
| #endif |
| |
| .align 5 |
| .set reorder |
| ll_pci_intD: |
| move a0,sp |
| jal pci_intD |
| nop |
| j ret_from_irq |
| nop |
| |
| .align 5 |
| .set reorder |
| ll_serial_irq: |
| li a0,6 |
| move a1,sp |
| jal do_IRQ |
| nop |
| j ret_from_irq |
| nop |
