diff options
Diffstat (limited to 'arch/m68knommu/platform/coldfire/intc.c')
| -rw-r--r-- | arch/m68knommu/platform/coldfire/intc.c | 44 |
1 files changed, 27 insertions, 17 deletions
diff --git a/arch/m68knommu/platform/coldfire/intc.c b/arch/m68knommu/platform/coldfire/intc.c index 14db26b..a4560c8 100644 --- a/arch/m68knommu/platform/coldfire/intc.c +++ b/arch/m68knommu/platform/coldfire/intc.c @@ -19,9 +19,17 @@ #include <asm/mcfsim.h> /* - * Define the vector numbers for the basic 7 interrupt sources. - * These are often referred to as the "external" interrupts in - * the ColdFire documentation (for the early ColdFire cores at least). + * The mapping of irq number to a mask register bit is not one-to-one. + * The irq numbers are either based on "level" of interrupt or fixed + * for an autovector-able interrupt. So we keep a local data structure + * that maps from irq to mask register. Not all interrupts will have + * an IMR bit. + */ +unsigned char mcf_irq2imr[NR_IRQS]; + +/* + * Define the miniumun and maximum external interrupt numbers. + * This is also used as the "level" interrupt numbers. */ #define EIRQ1 25 #define EIRQ7 31 @@ -36,22 +44,22 @@ void mcf_setimr(int index) { - u16 imr; - imr = __raw_readw(MCF_MBAR + MCFSIM_IMR); + u16 imr; + imr = __raw_readw(MCF_MBAR + MCFSIM_IMR); __raw_writew(imr | (0x1 << index), MCF_MBAR + MCFSIM_IMR); } void mcf_clrimr(int index) { - u16 imr; - imr = __raw_readw(MCF_MBAR + MCFSIM_IMR); + u16 imr; + imr = __raw_readw(MCF_MBAR + MCFSIM_IMR); __raw_writew(imr & ~(0x1 << index), MCF_MBAR + MCFSIM_IMR); } void mcf_maskimr(unsigned int mask) { u16 imr; - imr = __raw_readw(MCF_MBAR + MCFSIM_IMR); + imr = __raw_readw(MCF_MBAR + MCFSIM_IMR); imr |= mask; __raw_writew(imr, MCF_MBAR + MCFSIM_IMR); } @@ -60,22 +68,22 @@ void mcf_maskimr(unsigned int mask) void mcf_setimr(int index) { - u32 imr; - imr = __raw_readl(MCF_MBAR + MCFSIM_IMR); + u32 imr; + imr = __raw_readl(MCF_MBAR + MCFSIM_IMR); __raw_writel(imr | (0x1 << index), MCF_MBAR + MCFSIM_IMR); } void mcf_clrimr(int index) { - u32 imr; - imr = __raw_readl(MCF_MBAR + MCFSIM_IMR); + u32 imr; + imr = __raw_readl(MCF_MBAR + MCFSIM_IMR); __raw_writel(imr & ~(0x1 << index), MCF_MBAR + MCFSIM_IMR); } void mcf_maskimr(unsigned int mask) { u32 imr; - imr = __raw_readl(MCF_MBAR + MCFSIM_IMR); + imr = __raw_readl(MCF_MBAR + MCFSIM_IMR); imr |= mask; __raw_writel(imr, MCF_MBAR + MCFSIM_IMR); } @@ -93,24 +101,26 @@ void mcf_maskimr(unsigned int mask) */ void mcf_autovector(int irq) { +#ifdef MCFSIM_AVR if ((irq >= EIRQ1) && (irq <= EIRQ7)) { u8 avec; avec = __raw_readb(MCF_MBAR + MCFSIM_AVR); avec |= (0x1 << (irq - EIRQ1 + 1)); __raw_writeb(avec, MCF_MBAR + MCFSIM_AVR); } +#endif } static void intc_irq_mask(unsigned int irq) { - if ((irq >= EIRQ1) && (irq <= EIRQ7)) - mcf_setimr(irq - EIRQ1 + 1); + if (mcf_irq2imr[irq]) + mcf_setimr(mcf_irq2imr[irq]); } static void intc_irq_unmask(unsigned int irq) { - if ((irq >= EIRQ1) && (irq <= EIRQ7)) - mcf_clrimr(irq - EIRQ1 + 1); + if (mcf_irq2imr[irq]) + mcf_clrimr(mcf_irq2imr[irq]); } static int intc_irq_set_type(unsigned int irq, unsigned int type) |
