patch-2.4.19 linux-2.4.19/arch/mips/galileo-boards/ev64120/int-handler.S

• Lines: 114
• Date: Fri Aug 2 17:39:43 2002
• Orig file: linux-2.4.18/arch/mips/galileo-boards/ev64120/int-handler.S
• Orig date: Wed Dec 31 16:00:00 1969

diff -urN linux-2.4.18/arch/mips/galileo-boards/ev64120/int-handler.S linux-2.4.19/arch/mips/galileo-boards/ev64120/int-handler.S
@@ -0,0 +1,113 @@
+/*
+ * 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_galileo_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_galileo_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