diff options
Diffstat (limited to 'arch/mips/mips-boards/generic/time.c')
| -rw-r--r-- | arch/mips/mips-boards/generic/time.c | 49 |
1 files changed, 32 insertions, 17 deletions
diff --git a/arch/mips/mips-boards/generic/time.c b/arch/mips/mips-boards/generic/time.c index 16315444dd5a..3a6f1428b2cb 100644 --- a/arch/mips/mips-boards/generic/time.c +++ b/arch/mips/mips-boards/generic/time.c @@ -31,22 +31,21 @@ #include <asm/mipsregs.h> #include <asm/ptrace.h> +#include <asm/hardirq.h> +#include <asm/irq.h> #include <asm/div64.h> #include <asm/cpu.h> #include <asm/time.h> #include <asm/mc146818-time.h> +#include <asm/msc01_ic.h> #include <asm/mips-boards/generic.h> #include <asm/mips-boards/prom.h> +#include <asm/mips-boards/maltaint.h> +#include <asm/mc146818-time.h> unsigned long cpu_khz; -#if defined(CONFIG_MIPS_SEAD) -#define ALLINTS (IE_IRQ0 | IE_IRQ1 | IE_IRQ5) -#else -#define ALLINTS (IE_IRQ0 | IE_IRQ1 | IE_IRQ2 | IE_IRQ3 | IE_IRQ4 | IE_IRQ5) -#endif - #if defined(CONFIG_MIPS_ATLAS) static char display_string[] = " LINUX ON ATLAS "; #endif @@ -59,20 +58,27 @@ static char display_string[] = " LINUX ON SEAD "; static unsigned int display_count = 0; #define MAX_DISPLAY_COUNT (sizeof(display_string) - 8) -#define MIPS_CPU_TIMER_IRQ (NR_IRQS-1) - static unsigned int timer_tick_count=0; +static int mips_cpu_timer_irq; -void mips_timer_interrupt(struct pt_regs *regs) +static void mips_timer_dispatch (struct pt_regs *regs) { + do_IRQ (mips_cpu_timer_irq, regs); +} + +irqreturn_t mips_timer_interrupt(int irq, void *dev_id, struct pt_regs *regs) +{ + irqreturn_t r; + + r = timer_interrupt(irq, dev_id, regs); + if ((timer_tick_count++ % HZ) == 0) { mips_display_message(&display_string[display_count++]); if (display_count == MAX_DISPLAY_COUNT) - display_count = 0; - + display_count = 0; } - ll_timer_interrupt(MIPS_CPU_TIMER_IRQ, regs); + return r; } /* @@ -140,10 +146,8 @@ void __init mips_time_init(void) local_irq_save(flags); -#if defined(CONFIG_MIPS_ATLAS) || defined(CONFIG_MIPS_MALTA) /* Set Data mode - binary. */ CMOS_WRITE(CMOS_READ(RTC_CONTROL) | RTC_DM_BINARY, RTC_CONTROL); -#endif est_freq = estimate_cpu_frequency (); @@ -157,11 +161,22 @@ void __init mips_time_init(void) void __init mips_timer_setup(struct irqaction *irq) { + if (cpu_has_veic) { + set_vi_handler (MSC01E_INT_CPUCTR, mips_timer_dispatch); + mips_cpu_timer_irq = MSC01E_INT_BASE + MSC01E_INT_CPUCTR; + } + else { + if (cpu_has_vint) + set_vi_handler (MIPSCPU_INT_CPUCTR, mips_timer_dispatch); + mips_cpu_timer_irq = MIPSCPU_INT_BASE + MIPSCPU_INT_CPUCTR; + } + + /* we are using the cpu counter for timer interrupts */ - irq->handler = no_action; /* we use our own handler */ - setup_irq(MIPS_CPU_TIMER_IRQ, irq); + irq->handler = mips_timer_interrupt; /* we use our own handler */ + setup_irq(mips_cpu_timer_irq, irq); + /* to generate the first timer interrupt */ write_c0_compare (read_c0_count() + mips_hpt_frequency/HZ); - set_c0_status(ALLINTS); } |