diff options
Diffstat (limited to 'arch/mips/philips/pnx8550/common/mipsIRQ.S')
| -rw-r--r-- | arch/mips/philips/pnx8550/common/mipsIRQ.S | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/arch/mips/philips/pnx8550/common/mipsIRQ.S b/arch/mips/philips/pnx8550/common/mipsIRQ.S new file mode 100644 index 000000000000..338bffda3fab --- /dev/null +++ b/arch/mips/philips/pnx8550/common/mipsIRQ.S @@ -0,0 +1,76 @@ +/* + * Copyright (c) 2002 Philips, Inc. All rights. + * Copyright (c) 2002 Red Hat, Inc. All rights. + * + * This software may be freely redistributed under the terms of the + * GNU General Public License. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + * + * Based upon arch/mips/galileo-boards/ev64240/int-handler.S + * + */ +#include <asm/asm.h> +#include <asm/mipsregs.h> +#include <asm/addrspace.h> +#include <asm/regdef.h> +#include <asm/stackframe.h> + +/* + * cp0_irqdispatch + * + * Code to handle in-core interrupt exception. + */ + + .align 5 + .set reorder + .set noat + NESTED(cp0_irqdispatch, PT_SIZE, sp) + SAVE_ALL + CLI + .set at + mfc0 t0,CP0_CAUSE + mfc0 t2,CP0_STATUS + + and t0,t2 + + andi t1,t0,STATUSF_IP2 /* int0 hardware line */ + bnez t1,ll_hw0_irq + nop + + andi t1,t0,STATUSF_IP7 /* int5 hardware line */ + bnez t1,ll_timer_irq + nop + + /* wrong alarm or masked ... */ + + j spurious_interrupt + nop + END(cp0_irqdispatch) + + .align 5 + .set reorder +ll_hw0_irq: + li a0,2 + move a1,sp + jal hw0_irqdispatch + nop + j ret_from_irq + nop + + .align 5 + .set reorder +ll_timer_irq: + mfc0 t3,CP0_CONFIG,7 + andi t4,t3,0x01c0 + beqz t4,ll_timer_out + nop + li a0,7 + move a1,sp + jal timer_irqdispatch + nop + +ll_timer_out: j ret_from_irq + nop |