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[MIPS] Fix the build error of Wind River PPMC board, rewrite irq code to C

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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>
This commit is contained in:
Mark.Zhan 2006-06-20 18:15:02 +08:00 committed by Ralf Baechle
parent 0a6047eef1
commit 9247857f5a
5 changed files with 16 additions and 66 deletions
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2
arch/mips/Kconfig
View file

@ -358,7 +358,7 @@ config MIPS_SEAD
board.
config WR_PPMC
bool "Support for Wind River PPMC board"
bool "Wind River PPMC board"
select IRQ_CPU
select BOOT_ELF32
select DMA_NONCOHERENT

2
arch/mips/gt64120/wrppmc/Makefile
View file

@ -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)

59
arch/mips/gt64120/wrppmc/int-handler.S
View file

@ -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

17
arch/mips/gt64120/wrppmc/irq.c
View file

@ -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);

2
arch/mips/gt64120/wrppmc/setup.c
View file

@ -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 *);