patch-2.4.19 linux-2.4.19/arch/mips/galileo-boards/ev96100/int-handler.S

• Lines: 33
• Date: Fri Aug 2 17:39:43 2002
• Orig file: linux-2.4.18/arch/mips/galileo-boards/ev96100/int-handler.S
• Orig date: Wed Dec 31 16:00:00 1969

diff -urN linux-2.4.18/arch/mips/galileo-boards/ev96100/int-handler.S linux-2.4.19/arch/mips/galileo-boards/ev96100/int-handler.S
@@ -0,0 +1,32 @@
+#include <asm/asm.h>
+#include <asm/mipsregs.h>
+#include <asm/regdef.h>
+#include <asm/stackframe.h>
+
+	.set	noat
+	.align	5
+
+NESTED(ev96100IRQ, 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
+
+	# FIX ME add R7000 extensions
+	andi	t0,0xff00		# isolate pending bits
+	andi	a0, t0, CAUSEF_IP7
+	beq	a0, zero, 1f
+	move	a0, sp
+	jal	mips_timer_interrupt
+	j	ret_from_irq
+
+1:	beqz	t0, 3f			# spurious interrupt
+	move	a0, t0
+	move	a1, sp			# delay slot
+	jal	ev96100_cpu_irq
+	j	ret_from_irq
+
+3:	j	spurious_interrupt
+	END(ev96100IRQ)