diff options
Diffstat (limited to 'arch/mips')
| -rw-r--r-- | arch/mips/include/asm/gic.h | 29 | ||||
| -rw-r--r-- | arch/mips/include/asm/mips-boards/maltaint.h | 55 | ||||
| -rw-r--r-- | arch/mips/kernel/irq-gic.c | 35 | ||||
| -rw-r--r-- | arch/mips/mti-malta/malta-int.c | 34 |
4 files changed, 81 insertions, 72 deletions
diff --git a/arch/mips/include/asm/gic.h b/arch/mips/include/asm/gic.h index 991b659..77207fa 100644 --- a/arch/mips/include/asm/gic.h +++ b/arch/mips/include/asm/gic.h @@ -341,15 +341,44 @@ struct gic_shared_intr_map { unsigned int local_intr_mask; }; +/* GIC nomenclature for Core Interrupt Pins. */ +#define GIC_CPU_INT0 0 /* Core Interrupt 2 */ +#define GIC_CPU_INT1 1 /* . */ +#define GIC_CPU_INT2 2 /* . */ +#define GIC_CPU_INT3 3 /* . */ +#define GIC_CPU_INT4 4 /* . */ +#define GIC_CPU_INT5 5 /* Core Interrupt 5 */ + +/* Local GIC interrupts. */ +#define GIC_INT_TMR (GIC_CPU_INT5) +#define GIC_INT_PERFCTR (GIC_CPU_INT5) + +/* Add 2 to convert non-EIC hardware interrupt to EIC vector number. */ +#define GIC_CPU_TO_VEC_OFFSET (2) + +/* Mapped interrupt to pin X, then GIC will generate the vector (X+1). */ +#define GIC_PIN_TO_VEC_OFFSET (1) + +extern unsigned long _gic_base; +extern unsigned int gic_irq_base; +extern unsigned int gic_irq_flags[]; +extern struct gic_shared_intr_map gic_shared_intr_map[]; + extern void gic_init(unsigned long gic_base_addr, unsigned long gic_addrspace_size, struct gic_intr_map *intrmap, unsigned int intrmap_size, unsigned int irqbase); +extern void gic_clocksource_init(unsigned int); extern unsigned int gic_get_int(void); extern void gic_send_ipi(unsigned int intr); extern unsigned int plat_ipi_call_int_xlate(unsigned int); extern unsigned int plat_ipi_resched_int_xlate(unsigned int); extern void gic_bind_eic_interrupt(int irq, int set); extern unsigned int gic_get_timer_pending(void); +extern void gic_enable_interrupt(int irq_vec); +extern void gic_disable_interrupt(int irq_vec); +extern void gic_irq_ack(struct irq_data *d); +extern void gic_finish_irq(struct irq_data *d); +extern void gic_platform_init(int irqs, struct irq_chip *irq_controller); #endif /* _ASM_GICREGS_H */ diff --git a/arch/mips/include/asm/mips-boards/maltaint.h b/arch/mips/include/asm/mips-boards/maltaint.h index 5447d9f..6692448 100644 --- a/arch/mips/include/asm/mips-boards/maltaint.h +++ b/arch/mips/include/asm/mips-boards/maltaint.h @@ -1,31 +1,16 @@ /* - * Carsten Langgaard, carstenl@mips.com - * Copyright (C) 2000 MIPS Technologies, Inc. All rights reserved. - * - * ######################################################################## - * - * This program is free software; you can distribute it and/or modify it - * under the terms of the GNU General Public License (Version 2) as - * published by the Free Software Foundation. - * - * This program is distributed in the hope it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License - * for more details. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. - * - * ######################################################################## - * - * Defines for the Malta interrupt controller. + * 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. * + * Copyright (C) 2000,2012 MIPS Technologies, Inc. All rights reserved. + * Carsten Langgaard <carstenl@mips.com> + * Steven J. Hill <sjhill@mips.com> */ #ifndef _MIPS_MALTAINT_H #define _MIPS_MALTAINT_H -#include <irq.h> +#define MIPS_GIC_IRQ_BASE (MIPS_CPU_IRQ_BASE + 8) /* * Interrupts 0..15 are used for Malta ISA compatible interrupts @@ -78,26 +63,6 @@ #define MSC01E_INT_PERFCTR 10 #define MSC01E_INT_CPUCTR 11 -/* GIC's Nomenclature for Core Interrupt Pins on the Malta */ -#define GIC_CPU_INT0 0 /* Core Interrupt 2 */ -#define GIC_CPU_INT1 1 /* . */ -#define GIC_CPU_INT2 2 /* . */ -#define GIC_CPU_INT3 3 /* . */ -#define GIC_CPU_INT4 4 /* . */ -#define GIC_CPU_INT5 5 /* Core Interrupt 5 */ - -/* MALTA GIC local interrupts */ -#define GIC_INT_TMR (GIC_CPU_INT5) -#define GIC_INT_PERFCTR (GIC_CPU_INT5) - -/* GIC constants */ -/* Add 2 to convert non-eic hw int # to eic vector # */ -#define GIC_CPU_TO_VEC_OFFSET (2) -/* If we map an intr to pin X, GIC will actually generate vector X+1 */ -#define GIC_PIN_TO_VEC_OFFSET (1) - -#define GIC_EXT_INTR(x) x - /* External Interrupts used for IPI */ #define GIC_IPI_EXT_INTR_RESCHED_VPE0 16 #define GIC_IPI_EXT_INTR_CALLFNC_VPE0 17 @@ -108,10 +73,4 @@ #define GIC_IPI_EXT_INTR_RESCHED_VPE3 22 #define GIC_IPI_EXT_INTR_CALLFNC_VPE3 23 -#define MIPS_GIC_IRQ_BASE (MIPS_CPU_IRQ_BASE + 8) - -#ifndef __ASSEMBLY__ -extern void maltaint_init(void); -#endif - #endif /* !(_MIPS_MALTAINT_H) */ diff --git a/arch/mips/kernel/irq-gic.c b/arch/mips/kernel/irq-gic.c index 0c527f6..18124c3 100644 --- a/arch/mips/kernel/irq-gic.c +++ b/arch/mips/kernel/irq-gic.c @@ -12,12 +12,11 @@ #include <asm-generic/bitops/find.h> -static unsigned long _gic_base; -static unsigned int _irqbase; -static unsigned int gic_irq_flags[GIC_NUM_INTRS]; -#define GIC_IRQ_FLAG_EDGE 0x0001 +unsigned long _gic_base; +unsigned int gic_irq_base; +unsigned int gic_irq_flags[GIC_NUM_INTRS]; -struct gic_pcpu_mask pcpu_masks[NR_CPUS]; +static struct gic_pcpu_mask pcpu_masks[NR_CPUS]; static struct gic_pending_regs pending_regs[NR_CPUS]; static struct gic_intrmask_regs intrmask_regs[NR_CPUS]; @@ -87,27 +86,16 @@ unsigned int gic_get_int(void) return i; } -static void gic_irq_ack(struct irq_data *d) -{ - unsigned int irq = d->irq - _irqbase; - - pr_debug("CPU%d: %s: irq%d\n", smp_processor_id(), __func__, irq); - GIC_CLR_INTR_MASK(irq); - - if (gic_irq_flags[irq] & GIC_IRQ_FLAG_EDGE) - GICWRITE(GIC_REG(SHARED, GIC_SH_WEDGE), irq); -} - static void gic_mask_irq(struct irq_data *d) { - unsigned int irq = d->irq - _irqbase; + unsigned int irq = d->irq - gic_irq_base; pr_debug("CPU%d: %s: irq%d\n", smp_processor_id(), __func__, irq); GIC_CLR_INTR_MASK(irq); } static void gic_unmask_irq(struct irq_data *d) { - unsigned int irq = d->irq - _irqbase; + unsigned int irq = d->irq - gic_irq_base; pr_debug("CPU%d: %s: irq%d\n", smp_processor_id(), __func__, irq); GIC_SET_INTR_MASK(irq); } @@ -119,7 +107,7 @@ static DEFINE_SPINLOCK(gic_lock); static int gic_set_affinity(struct irq_data *d, const struct cpumask *cpumask, bool force) { - unsigned int irq = d->irq - _irqbase; + unsigned int irq = d->irq - gic_irq_base; cpumask_t tmp = CPU_MASK_NONE; unsigned long flags; int i; @@ -194,7 +182,7 @@ static void __init gic_setup_intr(unsigned int intr, unsigned int cpu, if (flags & GIC_FLAG_TRANSPARENT) GIC_SET_INTR_MASK(intr); if (trigtype == GIC_TRIG_EDGE) - gic_irq_flags[intr] |= GIC_IRQ_FLAG_EDGE; + gic_irq_flags[intr] |= GIC_TRIG_EDGE; } static void __init gic_basic_init(int numintrs, int numvpes, @@ -227,9 +215,6 @@ static void __init gic_basic_init(int numintrs, int numvpes, } vpe_local_setup(numvpes); - - for (i = _irqbase; i < (_irqbase + numintrs); i++) - irq_set_chip(i, &gic_irq_controller); } void __init gic_init(unsigned long gic_base_addr, @@ -242,7 +227,7 @@ void __init gic_init(unsigned long gic_base_addr, _gic_base = (unsigned long) ioremap_nocache(gic_base_addr, gic_addrspace_size); - _irqbase = irqbase; + gic_irq_base = irqbase; GICREAD(GIC_REG(SHARED, GIC_SH_CONFIG), gicconfig); numintrs = (gicconfig & GIC_SH_CONFIG_NUMINTRS_MSK) >> @@ -255,4 +240,6 @@ void __init gic_init(unsigned long gic_base_addr, pr_debug("%s called\n", __func__); gic_basic_init(numintrs, numvpes, intr_map, intr_map_size); + + gic_platform_init(numintrs, &gic_irq_controller); } diff --git a/arch/mips/mti-malta/malta-int.c b/arch/mips/mti-malta/malta-int.c index 7b13a4c..5222a7c 100644 --- a/arch/mips/mti-malta/malta-int.c +++ b/arch/mips/mti-malta/malta-int.c @@ -747,3 +747,37 @@ int malta_be_handler(struct pt_regs *regs, int is_fixup) return retval; } + +void gic_enable_interrupt(int irq_vec) +{ + GIC_SET_INTR_MASK(irq_vec); +} + +void gic_disable_interrupt(int irq_vec) +{ + GIC_CLR_INTR_MASK(irq_vec); +} + +void gic_irq_ack(struct irq_data *d) +{ + int irq = (d->irq - gic_irq_base); + + GIC_CLR_INTR_MASK(irq); + + if (gic_irq_flags[irq] & GIC_TRIG_EDGE) + GICWRITE(GIC_REG(SHARED, GIC_SH_WEDGE), irq); +} + +void gic_finish_irq(struct irq_data *d) +{ + /* Enable interrupts. */ + GIC_SET_INTR_MASK(d->irq - gic_irq_base); +} + +void __init gic_platform_init(int irqs, struct irq_chip *irq_controller) +{ + int i; + + for (i = gic_irq_base; i < (gic_irq_base + irqs); i++) + irq_set_chip(i, irq_controller); +} |
