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/*
* Copyright (C) 2013 - Virtual Open Systems
* Author: Antonios Motakis <a.motakis@virtualopensystems.com>
*
* This program is free software; you can redistribute 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 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.
*/
#ifndef VFIO_PLATFORM_PRIVATE_H
#define VFIO_PLATFORM_PRIVATE_H
#include <linux/types.h>
#include <linux/interrupt.h>
#define VFIO_PLATFORM_OFFSET_SHIFT 40
#define VFIO_PLATFORM_OFFSET_MASK (((u64)(1) << VFIO_PLATFORM_OFFSET_SHIFT) - 1)
#define VFIO_PLATFORM_OFFSET_TO_INDEX(off) \
(off >> VFIO_PLATFORM_OFFSET_SHIFT)
#define VFIO_PLATFORM_INDEX_TO_OFFSET(index) \
((u64)(index) << VFIO_PLATFORM_OFFSET_SHIFT)
struct vfio_platform_irq {
u32 flags;
u32 count;
int hwirq;
char *name;
struct eventfd_ctx *trigger;
bool masked;
spinlock_t lock;
struct virqfd *unmask;
struct virqfd *mask;
};
struct vfio_platform_region {
u64 addr;
resource_size_t size;
u32 flags;
u32 type;
#define VFIO_PLATFORM_REGION_TYPE_MMIO 1
#define VFIO_PLATFORM_REGION_TYPE_PIO 2
void __iomem *ioaddr;
};
struct vfio_platform_device {
struct vfio_platform_region *regions;
u32 num_regions;
struct vfio_platform_irq *irqs;
u32 num_irqs;
int refcnt;
struct mutex igate;
/*
* These fields should be filled by the bus specific binder
*/
void *opaque;
const char *name;
uint32_t flags;
/* callbacks to discover device resources */
struct resource*
(*get_resource)(struct vfio_platform_device *vdev, int i);
int (*get_irq)(struct vfio_platform_device *vdev, int i);
};
extern int vfio_platform_probe_common(struct vfio_platform_device *vdev,
struct device *dev);
extern struct vfio_platform_device *vfio_platform_remove_common
(struct device *dev);
extern int vfio_platform_irq_init(struct vfio_platform_device *vdev);
extern void vfio_platform_irq_cleanup(struct vfio_platform_device *vdev);
extern int vfio_platform_set_irqs_ioctl(struct vfio_platform_device *vdev,
uint32_t flags, unsigned index,
unsigned start, unsigned count,
void *data);
#endif /* VFIO_PLATFORM_PRIVATE_H */
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