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authorPaolo Bonzini <pbonzini@redhat.com>2013-03-18 17:36:02 +0100
committerPaolo Bonzini <pbonzini@redhat.com>2013-04-08 18:13:16 +0200
commit47b43a1f414c5b3eb9eb7502d0b0be0d134259ba (patch)
tree9acfd03f458083a077ac79bd462d5360916f445f /hw/intc/gic_internal.h
parent8d8b636d28a97af7bf43c3267d07f87b9530939a (diff)
hw: move private headers to hw/ subdirectories.
Many headers are used only in a single directory. These can be kept in hw/. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'hw/intc/gic_internal.h')
-rw-r--r--hw/intc/gic_internal.h138
1 files changed, 138 insertions, 0 deletions
diff --git a/hw/intc/gic_internal.h b/hw/intc/gic_internal.h
new file mode 100644
index 0000000000..99a3bc362b
--- /dev/null
+++ b/hw/intc/gic_internal.h
@@ -0,0 +1,138 @@
+/*
+ * ARM GIC support - internal interfaces
+ *
+ * Copyright (c) 2012 Linaro Limited
+ * Written by Peter Maydell
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef QEMU_ARM_GIC_INTERNAL_H
+#define QEMU_ARM_GIC_INTERNAL_H
+
+#include "hw/sysbus.h"
+
+/* Maximum number of possible interrupts, determined by the GIC architecture */
+#define GIC_MAXIRQ 1020
+/* First 32 are private to each CPU (SGIs and PPIs). */
+#define GIC_INTERNAL 32
+/* Maximum number of possible CPU interfaces, determined by GIC architecture */
+#define NCPU 8
+
+#define ALL_CPU_MASK ((unsigned)(((1 << NCPU) - 1)))
+
+/* The NVIC has 16 internal vectors. However these are not exposed
+ through the normal GIC interface. */
+#define GIC_BASE_IRQ ((s->revision == REV_NVIC) ? 32 : 0)
+
+#define GIC_SET_ENABLED(irq, cm) s->irq_state[irq].enabled |= (cm)
+#define GIC_CLEAR_ENABLED(irq, cm) s->irq_state[irq].enabled &= ~(cm)
+#define GIC_TEST_ENABLED(irq, cm) ((s->irq_state[irq].enabled & (cm)) != 0)
+#define GIC_SET_PENDING(irq, cm) s->irq_state[irq].pending |= (cm)
+#define GIC_CLEAR_PENDING(irq, cm) s->irq_state[irq].pending &= ~(cm)
+#define GIC_TEST_PENDING(irq, cm) ((s->irq_state[irq].pending & (cm)) != 0)
+#define GIC_SET_ACTIVE(irq, cm) s->irq_state[irq].active |= (cm)
+#define GIC_CLEAR_ACTIVE(irq, cm) s->irq_state[irq].active &= ~(cm)
+#define GIC_TEST_ACTIVE(irq, cm) ((s->irq_state[irq].active & (cm)) != 0)
+#define GIC_SET_MODEL(irq) s->irq_state[irq].model = true
+#define GIC_CLEAR_MODEL(irq) s->irq_state[irq].model = false
+#define GIC_TEST_MODEL(irq) s->irq_state[irq].model
+#define GIC_SET_LEVEL(irq, cm) s->irq_state[irq].level = (cm)
+#define GIC_CLEAR_LEVEL(irq, cm) s->irq_state[irq].level &= ~(cm)
+#define GIC_TEST_LEVEL(irq, cm) ((s->irq_state[irq].level & (cm)) != 0)
+#define GIC_SET_TRIGGER(irq) s->irq_state[irq].trigger = true
+#define GIC_CLEAR_TRIGGER(irq) s->irq_state[irq].trigger = false
+#define GIC_TEST_TRIGGER(irq) s->irq_state[irq].trigger
+#define GIC_GET_PRIORITY(irq, cpu) (((irq) < GIC_INTERNAL) ? \
+ s->priority1[irq][cpu] : \
+ s->priority2[(irq) - GIC_INTERNAL])
+#define GIC_TARGET(irq) s->irq_target[irq]
+
+typedef struct gic_irq_state {
+ /* The enable bits are only banked for per-cpu interrupts. */
+ uint8_t enabled;
+ uint8_t pending;
+ uint8_t active;
+ uint8_t level;
+ bool model; /* 0 = N:N, 1 = 1:N */
+ bool trigger; /* nonzero = edge triggered. */
+} gic_irq_state;
+
+typedef struct GICState {
+ SysBusDevice busdev;
+ qemu_irq parent_irq[NCPU];
+ bool enabled;
+ bool cpu_enabled[NCPU];
+
+ gic_irq_state irq_state[GIC_MAXIRQ];
+ uint8_t irq_target[GIC_MAXIRQ];
+ uint8_t priority1[GIC_INTERNAL][NCPU];
+ uint8_t priority2[GIC_MAXIRQ - GIC_INTERNAL];
+ uint16_t last_active[GIC_MAXIRQ][NCPU];
+
+ uint16_t priority_mask[NCPU];
+ uint16_t running_irq[NCPU];
+ uint16_t running_priority[NCPU];
+ uint16_t current_pending[NCPU];
+
+ uint32_t num_cpu;
+
+ MemoryRegion iomem; /* Distributor */
+ /* This is just so we can have an opaque pointer which identifies
+ * both this GIC and which CPU interface we should be accessing.
+ */
+ struct GICState *backref[NCPU];
+ MemoryRegion cpuiomem[NCPU+1]; /* CPU interfaces */
+ uint32_t num_irq;
+ uint32_t revision;
+} GICState;
+
+/* The special cases for the revision property: */
+#define REV_11MPCORE 0
+#define REV_NVIC 0xffffffff
+
+void gic_set_pending_private(GICState *s, int cpu, int irq);
+uint32_t gic_acknowledge_irq(GICState *s, int cpu);
+void gic_complete_irq(GICState *s, int cpu, int irq);
+void gic_update(GICState *s);
+void gic_init_irqs_and_distributor(GICState *s, int num_irq);
+
+#define TYPE_ARM_GIC_COMMON "arm_gic_common"
+#define ARM_GIC_COMMON(obj) \
+ OBJECT_CHECK(GICState, (obj), TYPE_ARM_GIC_COMMON)
+#define ARM_GIC_COMMON_CLASS(klass) \
+ OBJECT_CLASS_CHECK(ARMGICCommonClass, (klass), TYPE_ARM_GIC_COMMON)
+#define ARM_GIC_COMMON_GET_CLASS(obj) \
+ OBJECT_GET_CLASS(ARMGICCommonClass, (obj), TYPE_ARM_GIC_COMMON)
+
+typedef struct ARMGICCommonClass {
+ SysBusDeviceClass parent_class;
+ void (*pre_save)(GICState *s);
+ void (*post_load)(GICState *s);
+} ARMGICCommonClass;
+
+#define TYPE_ARM_GIC "arm_gic"
+#define ARM_GIC(obj) \
+ OBJECT_CHECK(GICState, (obj), TYPE_ARM_GIC)
+#define ARM_GIC_CLASS(klass) \
+ OBJECT_CLASS_CHECK(ARMGICClass, (klass), TYPE_ARM_GIC)
+#define ARM_GIC_GET_CLASS(obj) \
+ OBJECT_GET_CLASS(ARMGICClass, (obj), TYPE_ARM_GIC)
+
+typedef struct ARMGICClass {
+ ARMGICCommonClass parent_class;
+ DeviceRealize parent_realize;
+} ARMGICClass;
+
+#endif /* !QEMU_ARM_GIC_INTERNAL_H */