patch-2.4.22 linux-2.4.22/arch/mips/gt64120/ev64120/int-handler.S
Next file: linux-2.4.22/arch/mips/gt64120/ev64120/irq.c
Previous file: linux-2.4.22/arch/mips/gt64120/ev64120/fixup-ev64120.c
Back to the patch index
Back to the overall index
- Lines: 114
- Date:
2003-08-25 04:44:39.000000000 -0700
- Orig file:
linux-2.4.21/arch/mips/gt64120/ev64120/int-handler.S
- Orig date:
1969-12-31 16:00:00.000000000 -0800
diff -urN linux-2.4.21/arch/mips/gt64120/ev64120/int-handler.S linux-2.4.22/arch/mips/gt64120/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_gt64120_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_gt64120_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
FUNET's LINUX-ADM group, linux-adm@nic.funet.fi
TCL-scripts by Sam Shen (who was at: slshen@lbl.gov)