diff options
Diffstat (limited to 'arch/m68knommu/platform/coldfire/intc-2.c')
| -rw-r--r-- | arch/m68knommu/platform/coldfire/intc-2.c | 53 |
1 files changed, 43 insertions, 10 deletions
diff --git a/arch/m68knommu/platform/coldfire/intc-2.c b/arch/m68knommu/platform/coldfire/intc-2.c index 5598c8b8661..85daa2b3001 100644 --- a/arch/m68knommu/platform/coldfire/intc-2.c +++ b/arch/m68knommu/platform/coldfire/intc-2.c @@ -1,5 +1,11 @@ /* - * intc-1.c + * intc-2.c + * + * General interrupt controller code for the many ColdFire cores that use + * interrupt controllers with 63 interrupt sources, organized as 56 fully- + * programmable + 7 fixed-level interrupt sources. This includes the 523x + * family, the 5270, 5271, 5274, 5275, and the 528x family which have two such + * controllers, and the 547x and 548x families which have only one of them. * * (C) Copyright 2009, Greg Ungerer <gerg@snapgear.com> * @@ -19,21 +25,37 @@ #include <asm/traps.h> /* - * Each vector needs a unique priority and level asscoiated with it. + * Bit definitions for the ICR family of registers. + */ +#define MCFSIM_ICR_LEVEL(l) ((l)<<3) /* Level l intr */ +#define MCFSIM_ICR_PRI(p) (p) /* Priority p intr */ + +/* + * Each vector needs a unique priority and level associated with it. * We don't really care so much what they are, we don't rely on the - * tranditional priority interrupt scheme of the m68k/ColdFire. + * traditional priority interrupt scheme of the m68k/ColdFire. */ -static u8 intc_intpri = 0x36; +static u8 intc_intpri = MCFSIM_ICR_LEVEL(6) | MCFSIM_ICR_PRI(6); + +#ifdef MCFICM_INTC1 +#define NR_VECS 128 +#else +#define NR_VECS 64 +#endif static void intc_irq_mask(unsigned int irq) { - if ((irq >= MCFINT_VECBASE) && (irq <= MCFINT_VECBASE + 128)) { + if ((irq >= MCFINT_VECBASE) && (irq <= MCFINT_VECBASE + NR_VECS)) { unsigned long imraddr; u32 val, imrbit; irq -= MCFINT_VECBASE; imraddr = MCF_IPSBAR; +#ifdef MCFICM_INTC1 imraddr += (irq & 0x40) ? MCFICM_INTC1 : MCFICM_INTC0; +#else + imraddr += MCFICM_INTC0; +#endif imraddr += (irq & 0x20) ? MCFINTC_IMRH : MCFINTC_IMRL; imrbit = 0x1 << (irq & 0x1f); @@ -44,13 +66,17 @@ static void intc_irq_mask(unsigned int irq) static void intc_irq_unmask(unsigned int irq) { - if ((irq >= MCFINT_VECBASE) && (irq <= MCFINT_VECBASE + 128)) { + if ((irq >= MCFINT_VECBASE) && (irq <= MCFINT_VECBASE + NR_VECS)) { unsigned long intaddr, imraddr, icraddr; u32 val, imrbit; irq -= MCFINT_VECBASE; intaddr = MCF_IPSBAR; +#ifdef MCFICM_INTC1 intaddr += (irq & 0x40) ? MCFICM_INTC1 : MCFICM_INTC0; +#else + intaddr += MCFICM_INTC0; +#endif imraddr = intaddr + ((irq & 0x20) ? MCFINTC_IMRH : MCFINTC_IMRL); icraddr = intaddr + MCFINTC_ICR0 + (irq & 0x3f); imrbit = 0x1 << (irq & 0x1f); @@ -67,10 +93,16 @@ static void intc_irq_unmask(unsigned int irq) } } +static int intc_irq_set_type(unsigned int irq, unsigned int type) +{ + return 0; +} + static struct irq_chip intc_irq_chip = { .name = "CF-INTC", .mask = intc_irq_mask, .unmask = intc_irq_unmask, + .set_type = intc_irq_set_type, }; void __init init_IRQ(void) @@ -81,13 +113,14 @@ void __init init_IRQ(void) /* Mask all interrupt sources */ __raw_writel(0x1, MCF_IPSBAR + MCFICM_INTC0 + MCFINTC_IMRL); +#ifdef MCFICM_INTC1 __raw_writel(0x1, MCF_IPSBAR + MCFICM_INTC1 + MCFINTC_IMRL); +#endif for (irq = 0; (irq < NR_IRQS); irq++) { - irq_desc[irq].status = IRQ_DISABLED; - irq_desc[irq].action = NULL; - irq_desc[irq].depth = 1; - irq_desc[irq].chip = &intc_irq_chip; + set_irq_chip(irq, &intc_irq_chip); + set_irq_type(irq, IRQ_TYPE_LEVEL_HIGH); + set_irq_handler(irq, handle_level_irq); } } |