diff options
Diffstat (limited to 'arch/m68knommu/platform/coldfire/intc-simr.c')
| -rw-r--r-- | arch/m68knommu/platform/coldfire/intc-simr.c | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/arch/m68knommu/platform/coldfire/intc-simr.c b/arch/m68knommu/platform/coldfire/intc-simr.c new file mode 100644 index 0000000..3b614a3 --- /dev/null +++ b/arch/m68knommu/platform/coldfire/intc-simr.c @@ -0,0 +1,61 @@ +/* + * intc-simr.c + * + * (C) Copyright 2009, Greg Ungerer <gerg@snapgear.com> + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file COPYING in the main directory of this archive + * for more details. + */ + +#include <linux/types.h> +#include <linux/init.h> +#include <linux/kernel.h> +#include <linux/interrupt.h> +#include <linux/irq.h> +#include <linux/io.h> +#include <asm/coldfire.h> +#include <asm/mcfsim.h> +#include <asm/traps.h> + +static void intc_irq_mask(unsigned int irq) +{ + if ((irq >= MCFINT_VECBASE) && (irq <= MCFINT_VECBASE + 63)) + __raw_writeb(irq - MCFINT_VECBASE, MCF_IPSBAR + MCFICM_INTC0 + MCFINTC_SIMR); +} + +static void intc_irq_unmask(unsigned int irq) +{ + if ((irq >= MCFINT_VECBASE) && (irq <= MCFINT_VECBASE + 63)) + __raw_writeb(irq - MCFINT_VECBASE, MCF_IPSBAR + MCFICM_INTC0 + MCFINTC_CIMR); +} + +static int intc_irq_set_type(unsigned int irq, unsigned int type) +{ + if ((irq >= MCFINT_VECBASE) && (irq <= MCFINT_VECBASE + 63)) + __raw_writeb(5, MCF_IPSBAR + MCFICM_INTC0 + MCFINTC_ICR0 + irq - MCFINT_VECBASE); + 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) +{ + int irq; + + init_vectors(); + + 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; + intc_irq_set_type(irq, 0); + } +} + |
