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authorMark.Zhan <rongkai.zhan@windriver.com>2006-06-20 18:15:02 +0800
committerRalf Baechle <ralf@linux-mips.org>2006-06-29 21:10:34 +0100
commit9247857f5acadf0ea87fd6a9514c633644634f08 (patch)
tree77ce13d9b8ef0076622a0225ac6b8b1607a80260 /arch/mips/gt64120
parent0a6047eef1c465c38aacfbdab193161b3f0cd144 (diff)
downloadop-kernel-dev-9247857f5acadf0ea87fd6a9514c633644634f08.zip
op-kernel-dev-9247857f5acadf0ea87fd6a9514c633644634f08.tar.gz
[MIPS] Fix the build error of Wind River PPMC board, rewrite irq code to C
o Fix the build error Wind River PPMC board caused by the change of plat_setup hook interface. o Rewrite first level interrupt dispatch code to C. Signed-off-by: Rongkai.Zhan <rongkai.zhan@windriver.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/gt64120')
-rw-r--r--arch/mips/gt64120/wrppmc/Makefile2
-rw-r--r--arch/mips/gt64120/wrppmc/int-handler.S59
-rw-r--r--arch/mips/gt64120/wrppmc/irq.c17
-rw-r--r--arch/mips/gt64120/wrppmc/setup.c2
4 files changed, 15 insertions, 65 deletions
diff --git a/arch/mips/gt64120/wrppmc/Makefile b/arch/mips/gt64120/wrppmc/Makefile
index 72606b9..7cf5220 100644
--- a/arch/mips/gt64120/wrppmc/Makefile
+++ b/arch/mips/gt64120/wrppmc/Makefile
@@ -9,6 +9,6 @@
# Makefile for the Wind River MIPS 4KC PPMC Eval Board
#
-obj-y += int-handler.o irq.o reset.o setup.o time.o pci.o
+obj-y += irq.o reset.o setup.o time.o pci.o
EXTRA_AFLAGS := $(CFLAGS)
diff --git a/arch/mips/gt64120/wrppmc/int-handler.S b/arch/mips/gt64120/wrppmc/int-handler.S
deleted file mode 100644
index edee7b3..0000000
--- a/arch/mips/gt64120/wrppmc/int-handler.S
+++ /dev/null
@@ -1,59 +0,0 @@
-/*
- * 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.
- *
- * Copyright (C) 1995, 1996, 1997, 2003 by Ralf Baechle
- * Copyright (C) Wind River System Inc. Rongkai.Zhan <rongkai.zhan@windriver.com>
- */
-#include <asm/asm.h>
-#include <asm/mipsregs.h>
-#include <asm/addrspace.h>
-#include <asm/regdef.h>
-#include <asm/stackframe.h>
-#include <asm/mach-wrppmc/mach-gt64120.h>
-
- .align 5
- .set noat
-NESTED(handle_IRQ, PT_SIZE, sp)
- SAVE_ALL
- CLI # Important: mark KERNEL mode !
- .set at
-
- mfc0 t0, CP0_CAUSE # get pending interrupts
- mfc0 t1, CP0_STATUS # get enabled interrupts
- and t0, t0, t1 # get allowed interrupts
- andi t0, t0, 0xFF00
- beqz t0, 1f
- move a1, sp # Prepare 'struct pt_regs *regs' pointer
-
- andi t1, t0, CAUSEF_IP7 # CPU Compare/Count internal timer
- bnez t1, handle_cputimer_irq
- andi t1, t0, CAUSEF_IP6 # UART 16550 port
- bnez t1, handle_uart_irq
- andi t1, t0, CAUSEF_IP3 # PCI INT_A
- bnez t1, handle_pci_intA_irq
-
- /* wrong alarm or masked ... */
-1: j spurious_interrupt
- nop
-END(handle_IRQ)
-
- .align 5
-handle_cputimer_irq:
- li a0, WRPPMC_MIPS_TIMER_IRQ
- jal do_IRQ
- j ret_from_irq
-
- .align 5
-handle_uart_irq:
- li a0, WRPPMC_UART16550_IRQ
- jal do_IRQ
- j ret_from_irq
-
- .align 5
-handle_pci_intA_irq:
- li a0, WRPPMC_PCI_INTA_IRQ
- jal do_IRQ
- j ret_from_irq
-
diff --git a/arch/mips/gt64120/wrppmc/irq.c b/arch/mips/gt64120/wrppmc/irq.c
index 8605687..26cf360 100644
--- a/arch/mips/gt64120/wrppmc/irq.c
+++ b/arch/mips/gt64120/wrppmc/irq.c
@@ -30,7 +30,19 @@
#include <asm/irq_cpu.h>
#include <asm/gt64120.h>
-extern asmlinkage void handle_IRQ(void);
+asmlinkage void plat_irq_dispatch(struct pt_regs *regs)
+{
+ unsigned int pending = read_c0_status() & read_c0_cause();
+
+ if (pending & STATUSF_IP7)
+ do_IRQ(WRPPMC_MIPS_TIMER_IRQ, regs); /* CPU Compare/Count internal timer */
+ else if (pending & STATUSF_IP6)
+ do_IRQ(WRPPMC_UART16550_IRQ, regs); /* UART 16550 port */
+ else if (pending & STATUSF_IP3)
+ do_IRQ(WRPPMC_PCI_INTA_IRQ, regs); /* PCI INT_A */
+ else
+ spurious_interrupt(regs);
+}
/**
* Initialize GT64120 Interrupt Controller
@@ -53,9 +65,6 @@ void __init arch_init_irq(void)
/* enable all CPU interrupt bits. */
set_c0_status(ST0_IM); /* IE bit is still 0 */
- /* Install MIPS Interrupt Trap Vector */
- set_except_vector(0, handle_IRQ);
-
/* IRQ 0 - 7 are for MIPS common irq_cpu controller */
mips_cpu_irq_init(0);
diff --git a/arch/mips/gt64120/wrppmc/setup.c b/arch/mips/gt64120/wrppmc/setup.c
index 20c591e..2db6375 100644
--- a/arch/mips/gt64120/wrppmc/setup.c
+++ b/arch/mips/gt64120/wrppmc/setup.c
@@ -125,7 +125,7 @@ static void wrppmc_setup_serial(void)
}
#endif
-void __init plat_setup(void)
+void __init plat_mem_setup(void)
{
extern void wrppmc_time_init(void);
extern void wrppmc_timer_setup(struct irqaction *);
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