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-rw-r--r--arch/mips/include/asm/gic.h29
-rw-r--r--arch/mips/include/asm/mips-boards/maltaint.h55
-rw-r--r--arch/mips/kernel/irq-gic.c35
-rw-r--r--arch/mips/mti-malta/malta-int.c34
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);
+}
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