| /* |
| * Copyright 2001 MontaVista Software Inc. |
| * Author: ppopov@mvista.com |
| * |
| * Interrupt dispatcher for Au1000 boards. |
| * |
| * This program is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License as published by the |
| * Free Software Foundation; either version 2 of the License, or (at your |
| * option) any later version. |
| */ |
| #include <asm/asm.h> |
| #include <asm/mipsregs.h> |
| #include <asm/addrspace.h> |
| #include <asm/regdef.h> |
| #include <asm/stackframe.h> |
| |
| .text |
| .set macro |
| .set noat |
| .align 5 |
| |
| NESTED(au1000_IRQ, PT_SIZE, sp) |
| SAVE_ALL |
| CLI # Important: mark KERNEL mode ! |
| |
| mfc0 t0,CP0_CAUSE # get pending interrupts |
| mfc0 t1,CP0_STATUS # get enabled interrupts |
| and t0,t1 # isolate allowed ones |
| |
| andi t0,0xff00 # isolate pending bits |
| beqz t0, 3f # spurious interrupt |
| |
| andi a0, t0, CAUSEF_IP7 |
| beq a0, zero, 1f |
| move a0, sp |
| jal mips_timer_interrupt |
| j ret_from_irq |
| |
| 1: |
| andi a0, t0, CAUSEF_IP2 # Interrupt Controller 0, Request 0 |
| beq a0, zero, 2f |
| move a0,sp |
| jal intc0_req0_irqdispatch |
| j ret_from_irq |
| 2: |
| andi a0, t0, CAUSEF_IP3 # Interrupt Controller 0, Request 1 |
| beq a0, zero, 3f |
| move a0,sp |
| jal intc0_req1_irqdispatch |
| j ret_from_irq |
| 3: |
| andi a0, t0, CAUSEF_IP4 # Interrupt Controller 1, Request 0 |
| beq a0, zero, 4f |
| move a0,sp |
| jal intc1_req0_irqdispatch |
| j ret_from_irq |
| 4: |
| andi a0, t0, CAUSEF_IP5 # Interrupt Controller 1, Request 1 |
| beq a0, zero, 5f |
| move a0, sp |
| jal intc1_req1_irqdispatch |
| j ret_from_irq |
| |
| 5: |
| move a0, sp |
| j spurious_interrupt |
| END(au1000_IRQ) |
