2 * Jailhouse, a Linux-based partitioning hypervisor
4 * Copyright (c) ARM Limited, 2014
7 * Jean-Philippe Brucker <jean-philippe.brucker@arm.com>
9 * This work is licensed under the terms of the GNU GPL, version 2. See
10 * the COPYING file in the top-level directory.
13 #ifndef _JAILHOUSE_ASM_IRQCHIP_H
14 #define _JAILHOUSE_ASM_IRQCHIP_H
17 * Since there is no finer-grained allocation than page-alloc for the moment,
18 * and it is very complicated to predict the total size needed at
19 * initialisation, each cpu is allocated one page of pending irqs.
20 * This allows for 256 pending IRQs, which should be sufficient.
22 #define MAX_PENDING_IRQS (PAGE_SIZE / sizeof(struct pending_irq))
24 #include <jailhouse/cell.h>
25 #include <jailhouse/mmio.h>
26 #include <asm/percpu.h>
32 * Routing mode values:
33 * 0: use aff3.aff2.aff1.targets
34 * 1: all processors in the cell except this CPU
38 /* GICv2 only uses 8bit in targets, and no affinity routing */
41 /* Only available on 64-bit, when CTLR.A3V is 1 */
49 int (*cpu_init)(struct per_cpu *cpu_data);
50 int (*cell_init)(struct cell *cell);
51 void (*cell_exit)(struct cell *cell);
52 int (*cpu_reset)(struct per_cpu *cpu_data, bool is_shutdown);
54 int (*send_sgi)(struct sgi *sgi);
55 void (*handle_irq)(struct per_cpu *cpu_data);
56 void (*eoi_irq)(u32 irqn, bool deactivate);
57 int (*inject_irq)(struct per_cpu *cpu_data,
58 struct pending_irq *irq);
60 int (*mmio_access)(struct mmio_access *access);
63 /* Virtual interrupts waiting to be injected */
67 struct pending_irq *next;
68 struct pending_irq *prev;
69 } __attribute__((packed));
71 unsigned int irqchip_mmio_count_regions(struct cell *cell);
73 int irqchip_init(void);
74 int irqchip_cpu_init(struct per_cpu *cpu_data);
75 int irqchip_cpu_reset(struct per_cpu *cpu_data);
76 void irqchip_cpu_shutdown(struct per_cpu *cpu_data);
78 int irqchip_cell_init(struct cell *cell);
79 void irqchip_cell_exit(struct cell *cell);
80 void irqchip_root_cell_shrink(struct cell *cell);
82 int irqchip_send_sgi(struct sgi *sgi);
83 void irqchip_handle_irq(struct per_cpu *cpu_data);
84 void irqchip_eoi_irq(u32 irqn, bool deactivate);
86 void irqchip_inject_pending(struct per_cpu *cpu_data);
87 int irqchip_insert_pending(struct per_cpu *cpu_data, struct pending_irq *irq);
88 int irqchip_remove_pending(struct per_cpu *cpu_data, struct pending_irq *irq);
89 int irqchip_set_pending(struct per_cpu *cpu_data, u32 irq_id, bool try_inject);
91 bool spi_in_cell(struct cell *cell, unsigned int spi);
93 #endif /* __ASSEMBLY__ */
94 #endif /* _JAILHOUSE_ASM_IRQCHIP_H */