diff options
Diffstat (limited to 'arch/mips/sgi-ip27/ip27-timer.c')
| -rw-r--r-- | arch/mips/sgi-ip27/ip27-timer.c | 72 |
1 files changed, 66 insertions, 6 deletions
diff --git a/arch/mips/sgi-ip27/ip27-timer.c b/arch/mips/sgi-ip27/ip27-timer.c index 36b662e..b029ba7 100644 --- a/arch/mips/sgi-ip27/ip27-timer.c +++ b/arch/mips/sgi-ip27/ip27-timer.c @@ -1,5 +1,5 @@ /* - * Copytight (C) 1999, 2000, 05 Ralf Baechle (ralf@linux-mips.org) + * Copytight (C) 1999, 2000, 05, 06 Ralf Baechle (ralf@linux-mips.org) * Copytight (C) 1999, 2000 Silicon Graphics, Inc. */ #include <linux/bcd.h> @@ -89,11 +89,13 @@ static int set_rtc_mmss(unsigned long nowtime) } #endif +static unsigned int rt_timer_irq; + void ip27_rt_timer_interrupt(struct pt_regs *regs) { int cpu = smp_processor_id(); int cpuA = cputoslice(cpu) == 0; - int irq = 9; /* XXX Assign number */ + unsigned int irq = rt_timer_irq; irq_enter(); write_seqlock(&xtime_lock); @@ -179,13 +181,73 @@ static __init unsigned long get_m48t35_time(void) return mktime(year, month, date, hour, min, sec); } -static void ip27_timer_setup(struct irqaction *irq) +static unsigned int startup_rt_irq(unsigned int irq) +{ + return 0; +} + +static void shutdown_rt_irq(unsigned int irq) +{ +} + +static void enable_rt_irq(unsigned int irq) +{ +} + +static void disable_rt_irq(unsigned int irq) +{ +} + +static void mask_and_ack_rt(unsigned int irq) { +} + +static void end_rt_irq(unsigned int irq) +{ +} + +static struct irq_chip rt_irq_type = { + .typename = "SN HUB RT timer", + .startup = startup_rt_irq, + .shutdown = shutdown_rt_irq, + .enable = enable_rt_irq, + .disable = disable_rt_irq, + .ack = mask_and_ack_rt, + .end = end_rt_irq, +}; + +static struct irqaction rt_irqaction = { + .handler = ip27_rt_timer_interrupt, + .flags = IRQF_DISABLED, + .mask = CPU_MASK_NONE, + .name = "timer" +}; + +extern int allocate_irqno(void); + +void __init plat_timer_setup(struct irqaction *irq) +{ + int irqno = allocate_irqno(); + + if (irqno < 0) + panic("Can't allocate interrupt number for timer interrupt"); + + irq_desc[irqno].status = IRQ_DISABLED; + irq_desc[irqno].action = NULL; + irq_desc[irqno].depth = 1; + irq_desc[irqno].chip = &rt_irq_type; + /* over-write the handler, we use our own way */ irq->handler = no_action; /* setup irqaction */ -// setup_irq(IP27_TIMER_IRQ, irq); /* XXX Can't do this yet. */ + irq_desc[irqno].status |= IRQ_PER_CPU; + + rt_timer_irq = irqno; + /* + * Only needed to get /proc/interrupt to display timer irq stats + */ + setup_irq(irqno, &rt_irqaction); } void __init ip27_time_init(void) @@ -194,8 +256,6 @@ void __init ip27_time_init(void) xtime.tv_nsec = 0; do_gettimeoffset = ip27_do_gettimeoffset; - - board_timer_setup = ip27_timer_setup; } void __init cpu_time_init(void) |