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authorLen Brown <len.brown@intel.com>2005-09-08 01:45:47 -0400
committerLen Brown <len.brown@intel.com>2005-09-08 01:45:47 -0400
commit64e47488c913ac704d465a6af86a26786d1412a5 (patch)
treed3b0148592963dcde26e4bb35ddfec8b1eaf8e23 /arch/mips/vr4181/common/int_handler.S
parent4a35a46bf1cda4737c428380d1db5d15e2590d18 (diff)
parentcaf39e87cc1182f7dae84eefc43ca14d54c78ef9 (diff)
downloadop-kernel-dev-64e47488c913ac704d465a6af86a26786d1412a5.zip
op-kernel-dev-64e47488c913ac704d465a6af86a26786d1412a5.tar.gz
Merge linux-2.6 with linux-acpi-2.6
Diffstat (limited to 'arch/mips/vr4181/common/int_handler.S')
-rw-r--r--arch/mips/vr4181/common/int_handler.S206
1 files changed, 0 insertions, 206 deletions
diff --git a/arch/mips/vr4181/common/int_handler.S b/arch/mips/vr4181/common/int_handler.S
deleted file mode 100644
index 2c041b8..0000000
--- a/arch/mips/vr4181/common/int_handler.S
+++ /dev/null
@@ -1,206 +0,0 @@
-/*
- * arch/mips/vr4181/common/int_handler.S
- *
- * Adapted to the VR4181 and almost entirely rewritten:
- * Copyright (C) 1999 Bradley D. LaRonde and Michael Klar
- *
- * Clean up to conform to the new IRQ
- * Copyright (C) 2001 MontaVista Software Inc.
- * Author: Jun Sun, jsun@mvista.com or jsun@junsun.net
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License. See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- */
-
-#include <asm/asm.h>
-#include <asm/regdef.h>
-#include <asm/mipsregs.h>
-#include <asm/stackframe.h>
-
-#include <asm/vr4181/vr4181.h>
-
-/*
- * [jsun]
- * See include/asm/vr4181/irq.h for IRQ assignment and strategy.
- */
-
- .text
- .set noreorder
-
- .align 5
- NESTED(vr4181_handle_irq, PT_SIZE, ra)
-
- .set noat
- SAVE_ALL
- CLI
-
- .set at
- .set noreorder
-
- mfc0 t0, CP0_CAUSE
- mfc0 t2, CP0_STATUS
-
- and t0, t2
-
- /* we check IP3 first; it happens most frequently */
- andi t1, t0, STATUSF_IP3
- bnez t1, ll_cpu_ip3
- andi t1, t0, STATUSF_IP2
- bnez t1, ll_cpu_ip2
- andi t1, t0, STATUSF_IP7 /* cpu timer */
- bnez t1, ll_cputimer_irq
- andi t1, t0, STATUSF_IP4
- bnez t1, ll_cpu_ip4
- andi t1, t0, STATUSF_IP5
- bnez t1, ll_cpu_ip5
- andi t1, t0, STATUSF_IP6
- bnez t1, ll_cpu_ip6
- andi t1, t0, STATUSF_IP0 /* software int 0 */
- bnez t1, ll_cpu_ip0
- andi t1, t0, STATUSF_IP1 /* software int 1 */
- bnez t1, ll_cpu_ip1
- nop
-
- .set reorder
-do_spurious:
- j spurious_interrupt
-
-/*
- * regular CPU irqs
- */
-ll_cputimer_irq:
- li a0, VR4181_IRQ_TIMER
- move a1, sp
- jal do_IRQ
- j ret_from_irq
-
-
-ll_cpu_ip0:
- li a0, VR4181_IRQ_SW1
- move a1, sp
- jal do_IRQ
- j ret_from_irq
-
-ll_cpu_ip1:
- li a0, VR4181_IRQ_SW2
- move a1, sp
- jal do_IRQ
- j ret_from_irq
-
-ll_cpu_ip3:
- li a0, VR4181_IRQ_INT1
- move a1, sp
- jal do_IRQ
- j ret_from_irq
-
-ll_cpu_ip4:
- li a0, VR4181_IRQ_INT2
- move a1, sp
- jal do_IRQ
- j ret_from_irq
-
-ll_cpu_ip5:
- li a0, VR4181_IRQ_INT3
- move a1, sp
- jal do_IRQ
- j ret_from_irq
-
-ll_cpu_ip6:
- li a0, VR4181_IRQ_INT4
- move a1, sp
- jal do_IRQ
- j ret_from_irq
-
-/*
- * One of the sys irq has happend.
- *
- * In the interest of speed, we first determine in the following order
- * which 16-irq block have pending interrupts:
- * sysint1 (16 sources, including cascading intrs from GPIO)
- * sysint2
- * gpio (16 intr sources)
- *
- * Then we do binary search to find the exact interrupt source.
- */
-ll_cpu_ip2:
-
- lui t3,%hi(VR4181_SYSINT1REG)
- lhu t0,%lo(VR4181_SYSINT1REG)(t3)
- lhu t2,%lo(VR4181_MSYSINT1REG)(t3)
- and t0, 0xfffb /* hack - remove RTC Long 1 intr */
- and t0, t2
- beqz t0, check_sysint2
-
- /* check for GPIO interrupts */
- andi t1, t0, 0x0100
- bnez t1, check_gpio_int
-
- /* so we have an interrupt in sysint1 which is not gpio int */
- li a0, VR4181_SYS_IRQ_BASE - 1
- j check_16
-
-check_sysint2:
-
- lhu t0,%lo(VR4181_SYSINT2REG)(t3)
- lhu t2,%lo(VR4181_MSYSINT2REG)(t3)
- and t0, 0xfffe /* hack - remove RTC Long 2 intr */
- and t0, t2
- li a0, VR4181_SYS_IRQ_BASE + 16 - 1
- j check_16
-
-check_gpio_int:
- lui t3,%hi(VR4181_GPINTMSK)
- lhu t0,%lo(VR4181_GPINTMSK)(t3)
- lhu t2,%lo(VR4181_GPINTSTAT)(t3)
- xori t0, 0xffff /* why? reverse logic? */
- and t0, t2
- li a0, VR4181_GPIO_IRQ_BASE - 1
- j check_16
-
-/*
- * When we reach check_16, we have 16-bit status in t0 and base irq number
- * in a0.
- */
-check_16:
- andi t1, t0, 0xff
- bnez t1, check_8
-
- srl t0, 8
- addi a0, 8
- j check_8
-
-/*
- * When we reach check_8, we have 8-bit status in t0 and base irq number
- * in a0.
- */
-check_8:
- andi t1, t0, 0xf
- bnez t1, check_4
-
- srl t0, 4
- addi a0, 4
- j check_4
-
-/*
- * When we reach check_4, we have 4-bit status in t0 and base irq number
- * in a0.
- */
-check_4:
- andi t0, t0, 0xf
- beqz t0, do_spurious
-
-loop:
- andi t2, t0, 0x1
- srl t0, 1
- addi a0, 1
- beqz t2, loop
-
-found_it:
- move a1, sp
- jal do_IRQ
-
- j ret_from_irq
-
- END(vr4181_handle_irq)
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