diff options
Diffstat (limited to 'arch/nios2/cpu/interrupts.c')
-rw-r--r-- | arch/nios2/cpu/interrupts.c | 84 |
1 files changed, 1 insertions, 83 deletions
diff --git a/arch/nios2/cpu/interrupts.c b/arch/nios2/cpu/interrupts.c index 36d3ef7541..9d85eb03a6 100644 --- a/arch/nios2/cpu/interrupts.c +++ b/arch/nios2/cpu/interrupts.c @@ -14,36 +14,8 @@ #include <asm/ptrace.h> #include <common.h> #include <command.h> -#include <watchdog.h> -#ifdef CONFIG_STATUS_LED -#include <status_led.h> -#endif - -struct nios_timer { - u32 status; /* Timer status reg */ - u32 control; /* Timer control reg */ - u32 periodl; /* Timeout period low */ - u32 periodh; /* Timeout period high */ - u32 snapl; /* Snapshot low */ - u32 snaph; /* Snapshot high */ -}; - -/* status register */ -#define NIOS_TIMER_TO (1 << 0) /* Timeout */ -#define NIOS_TIMER_RUN (1 << 1) /* Timer running */ - -/* control register */ -#define NIOS_TIMER_ITO (1 << 0) /* Timeout int ena */ -#define NIOS_TIMER_CONT (1 << 1) /* Continuous mode */ -#define NIOS_TIMER_START (1 << 2) /* Start timer */ -#define NIOS_TIMER_STOP (1 << 3) /* Stop timer */ - -#if defined(CONFIG_SYS_TIMER_BASE) && !defined(CONFIG_SYS_TIMER_IRQ) -#error CONFIG_SYS_TIMER_IRQ not defined (see documentation) -#endif - -/****************************************************************************/ +/*************************************************************************/ struct irq_action { interrupt_handler_t *handler; void *arg; @@ -52,60 +24,6 @@ struct irq_action { static struct irq_action vecs[32]; -/*************************************************************************/ -static volatile ulong timestamp; - -/* - * The board must handle this interrupt if a timer is not - * provided. - */ -void tmr_isr (void *arg) -{ - struct nios_timer *tmr = (struct nios_timer *)arg; - /* Interrupt is cleared by writing anything to the - * status register. - */ - writel (0, &tmr->status); - timestamp += CONFIG_SYS_NIOS_TMRMS; -#ifdef CONFIG_STATUS_LED - status_led_tick(timestamp); -#endif -} - -unsigned long notrace timer_read_counter(void) -{ - struct nios_timer *tmr = (struct nios_timer *)CONFIG_SYS_TIMER_BASE; - u32 val; - - /* Trigger update */ - writel(0x0, &tmr->snapl); - - /* Read timer value */ - val = readl(&tmr->snapl) & 0xffff; - val |= (readl(&tmr->snaph) & 0xffff) << 16; - - return ~val; -} - -int timer_init(void) -{ - struct nios_timer *tmr = (struct nios_timer *)CONFIG_SYS_TIMER_BASE; - - writel (0, &tmr->status); - writel (0, &tmr->control); - writel (NIOS_TIMER_STOP, &tmr->control); - - writel (0xffff, &tmr->periodl); - writel (0xffff, &tmr->periodh); - - writel (NIOS_TIMER_CONT | NIOS_TIMER_START, &tmr->control); - /* FIXME */ - irq_install_handler(CONFIG_SYS_TIMER_IRQ, tmr_isr, (void *)tmr); - - return 0; -} - -/*************************************************************************/ int disable_interrupts (void) { int val = rdctl (CTL_STATUS); |