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Diffstat (limited to 'qemu/hw/intc/gic_internal.h')
| -rw-r--r-- | qemu/hw/intc/gic_internal.h | 103 |
1 files changed, 103 insertions, 0 deletions
diff --git a/qemu/hw/intc/gic_internal.h b/qemu/hw/intc/gic_internal.h new file mode 100644 index 000000000..20c1e8a24 --- /dev/null +++ b/qemu/hw/intc/gic_internal.h @@ -0,0 +1,103 @@ +/* + * 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/intc/arm_gic.h" + +#define ALL_CPU_MASK ((unsigned)(((1 << GIC_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_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_EDGE_TRIGGER(irq) s->irq_state[irq].edge_trigger = true +#define GIC_CLEAR_EDGE_TRIGGER(irq) s->irq_state[irq].edge_trigger = false +#define GIC_TEST_EDGE_TRIGGER(irq) (s->irq_state[irq].edge_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] +#define GIC_CLEAR_GROUP(irq, cm) (s->irq_state[irq].group &= ~(cm)) +#define GIC_SET_GROUP(irq, cm) (s->irq_state[irq].group |= (cm)) +#define GIC_TEST_GROUP(irq, cm) ((s->irq_state[irq].group & (cm)) != 0) + +#define GICD_CTLR_EN_GRP0 (1U << 0) +#define GICD_CTLR_EN_GRP1 (1U << 1) + +#define GICC_CTLR_EN_GRP0 (1U << 0) +#define GICC_CTLR_EN_GRP1 (1U << 1) +#define GICC_CTLR_ACK_CTL (1U << 2) +#define GICC_CTLR_FIQ_EN (1U << 3) +#define GICC_CTLR_CBPR (1U << 4) /* GICv1: SBPR */ +#define GICC_CTLR_EOIMODE (1U << 9) +#define GICC_CTLR_EOIMODE_NS (1U << 10) + +/* Valid bits for GICC_CTLR for GICv1, v1 with security extensions, + * GICv2 and GICv2 with security extensions: + */ +#define GICC_CTLR_V1_MASK 0x1 +#define GICC_CTLR_V1_S_MASK 0x1f +#define GICC_CTLR_V2_MASK 0x21f +#define GICC_CTLR_V2_S_MASK 0x61f + +/* 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, MemTxAttrs attrs); +void gic_complete_irq(GICState *s, int cpu, int irq, MemTxAttrs attrs); +void gic_update(GICState *s); +void gic_init_irqs_and_distributor(GICState *s); +void gic_set_priority(GICState *s, int cpu, int irq, uint8_t val, + MemTxAttrs attrs); + +static inline bool gic_test_pending(GICState *s, int irq, int cm) +{ + if (s->revision == REV_NVIC || s->revision == REV_11MPCORE) { + return s->irq_state[irq].pending & cm; + } else { + /* Edge-triggered interrupts are marked pending on a rising edge, but + * level-triggered interrupts are either considered pending when the + * level is active or if software has explicitly written to + * GICD_ISPENDR to set the state pending. + */ + return (s->irq_state[irq].pending & cm) || + (!GIC_TEST_EDGE_TRIGGER(irq) && GIC_TEST_LEVEL(irq, cm)); + } +} + +#endif /* !QEMU_ARM_GIC_INTERNAL_H */ |