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/*-
* Copyright (c) 2015-2016 Svatopluk Kraus
* Copyright (c) 2015-2016 Michal Meloun
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
#ifndef _SYS_INTR_H_
#define _SYS_INTR_H_
#ifndef INTRNG
#error Need INTRNG for this file
#endif
#include <sys/systm.h>
#define INTR_IRQ_INVALID 0xFFFFFFFF
enum intr_map_data_type {
INTR_MAP_DATA_ACPI = 0,
INTR_MAP_DATA_FDT,
INTR_MAP_DATA_GPIO,
INTR_MAP_DATA_MSI,
/* Placeholders for platform specific types */
INTR_MAP_DATA_PLAT_1 = 1000,
INTR_MAP_DATA_PLAT_2,
INTR_MAP_DATA_PLAT_3,
INTR_MAP_DATA_PLAT_4,
INTR_MAP_DATA_PLAT_5,
};
struct intr_map_data {
size_t len;
enum intr_map_data_type type;
};
struct intr_map_data_msi {
struct intr_map_data hdr;
struct intr_irqsrc *isrc;
};
#ifdef notyet
#define INTR_SOLO INTR_MD1
typedef int intr_irq_filter_t(void *arg, struct trapframe *tf);
#else
typedef int intr_irq_filter_t(void *arg);
#endif
typedef int intr_child_irq_filter_t(void *arg, uintptr_t irq);
#define INTR_ISRC_NAMELEN (MAXCOMLEN + 1)
#define INTR_ISRCF_IPI 0x01 /* IPI interrupt */
#define INTR_ISRCF_PPI 0x02 /* PPI interrupt */
#define INTR_ISRCF_BOUND 0x04 /* bound to a CPU */
struct intr_pic;
/* Interrupt source definition. */
struct intr_irqsrc {
device_t isrc_dev; /* where isrc is mapped */
u_int isrc_irq; /* unique identificator */
u_int isrc_flags;
char isrc_name[INTR_ISRC_NAMELEN];
cpuset_t isrc_cpu; /* on which CPUs is enabled */
u_int isrc_index;
u_long * isrc_count;
u_int isrc_handlers;
struct intr_event * isrc_event;
#ifdef INTR_SOLO
intr_irq_filter_t * isrc_filter;
void * isrc_arg;
#endif
};
/* Intr interface for PIC. */
int intr_isrc_deregister(struct intr_irqsrc *);
int intr_isrc_register(struct intr_irqsrc *, device_t, u_int, const char *, ...)
__printflike(4, 5);
#ifdef SMP
bool intr_isrc_init_on_cpu(struct intr_irqsrc *isrc, u_int cpu);
#endif
int intr_isrc_dispatch(struct intr_irqsrc *, struct trapframe *);
u_int intr_irq_next_cpu(u_int current_cpu, cpuset_t *cpumask);
struct intr_pic *intr_pic_register(device_t, intptr_t);
int intr_pic_deregister(device_t, intptr_t);
int intr_pic_claim_root(device_t, intptr_t, intr_irq_filter_t *, void *, u_int);
struct intr_pic *intr_pic_add_handler(device_t, struct intr_pic *,
intr_child_irq_filter_t *, void *, uintptr_t, uintptr_t);
extern device_t intr_irq_root_dev;
/* Intr interface for BUS. */
int intr_activate_irq(device_t, struct resource *);
int intr_deactivate_irq(device_t, struct resource *);
int intr_setup_irq(device_t, struct resource *, driver_filter_t, driver_intr_t,
void *, int, void **);
int intr_teardown_irq(device_t, struct resource *, void *);
int intr_describe_irq(device_t, struct resource *, void *, const char *);
int intr_child_irq_handler(struct intr_pic *, uintptr_t);
/* Intr resources mapping. */
struct intr_map_data *intr_alloc_map_data(enum intr_map_data_type, size_t, int);
void intr_free_intr_map_data(struct intr_map_data *);
u_int intr_map_irq(device_t, intptr_t, struct intr_map_data *);
void intr_unmap_irq(u_int );
u_int intr_map_clone_irq(u_int );
/* MSI/MSI-X handling */
int intr_msi_register(device_t, intptr_t);
int intr_alloc_msi(device_t, device_t, intptr_t, int, int, int *);
int intr_release_msi(device_t, device_t, intptr_t, int, int *);
int intr_map_msi(device_t, device_t, intptr_t, int, uint64_t *, uint32_t *);
int intr_alloc_msix(device_t, device_t, intptr_t, int *);
int intr_release_msix(device_t, device_t, intptr_t, int);
#ifdef SMP
int intr_bind_irq(device_t, struct resource *, int);
void intr_pic_init_secondary(void);
/* Virtualization for interrupt source IPI counter increment. */
static inline void
intr_ipi_increment_count(u_long *counter, u_int cpu)
{
KASSERT(cpu < MAXCPU, ("%s: too big cpu %u", __func__, cpu));
counter[cpu]++;
}
/* Virtualization for interrupt source IPI counters setup. */
u_long * intr_ipi_setup_counters(const char *name);
#endif
#endif /* _SYS_INTR_H */
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