From 9247857f5acadf0ea87fd6a9514c633644634f08 Mon Sep 17 00:00:00 2001 From: "Mark.Zhan" Date: Tue, 20 Jun 2006 18:15:02 +0800 Subject: [PATCH] [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 Signed-off-by: Ralf Baechle --- arch/mips/Kconfig | 2 +- arch/mips/gt64120/wrppmc/Makefile | 2 +- arch/mips/gt64120/wrppmc/int-handler.S | 59 -------------------------- arch/mips/gt64120/wrppmc/irq.c | 17 ++++++-- arch/mips/gt64120/wrppmc/setup.c | 2 +- 5 files changed, 16 insertions(+), 66 deletions(-) delete mode 100644 arch/mips/gt64120/wrppmc/int-handler.S diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig index 35e038a974..3fa67af872 100644 --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig @@ -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 diff --git a/arch/mips/gt64120/wrppmc/Makefile b/arch/mips/gt64120/wrppmc/Makefile index 72606b9af1..7cf5220551 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 edee7b3941..0000000000 --- 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 - */ -#include -#include -#include -#include -#include -#include - - .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 8605687e24..26cf360f16 100644 --- a/arch/mips/gt64120/wrppmc/irq.c +++ b/arch/mips/gt64120/wrppmc/irq.c @@ -30,7 +30,19 @@ #include #include -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 20c591e49d..2db6375ef2 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 *); -- 2.39.5