X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=arch%2Fmips%2Fphilips%2Fpnx8550%2Fcommon%2FmipsIRQ.S;fp=arch%2Fmips%2Fphilips%2Fpnx8550%2Fcommon%2FmipsIRQ.S;h=338bffda3fab438829f150d2764ef66c596d37e3;hb=be1e6109ac94a859551f8e1774eb9a8469fe055c;hp=0000000000000000000000000000000000000000;hpb=bd5a19dd4af64aaf2a1cc38033a2bd21a093a497;p=linux-2.6.git

diff --git a/arch/mips/philips/pnx8550/common/mipsIRQ.S b/arch/mips/philips/pnx8550/common/mipsIRQ.S
new file mode 100644
index 000000000..338bffda3
--- /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