drivers/vfio/cdx/private.h

/* SPDX-License-Identifier: GPL-2.0 */
/*
 * Copyright (C) 2022-2023, Advanced Micro Devices, Inc.
 */

#ifndef VFIO_CDX_PRIVATE_H
#define VFIO_CDX_PRIVATE_H

#include <linux/mutex.h>

#define VFIO_CDX_OFFSET_SHIFT    40

static inline u64 vfio_cdx_index_to_offset(u32 index)
{
	return ((u64)(index) << VFIO_CDX_OFFSET_SHIFT);
}

struct vfio_cdx_irq {
	u32			flags;
	u32			count;
	int			irq_no;
	struct eventfd_ctx	*trigger;
	char			*name;
};

struct vfio_cdx_region {
	u32			flags;
	u32			type;
	u64			addr;
	resource_size_t		size;
};

struct vfio_cdx_device {
	struct vfio_device	vdev;
	struct vfio_cdx_region	*regions;
	struct mutex		cdx_irqs_lock;
	struct vfio_cdx_irq	*cdx_irqs;
	u32			flags;
#define BME_SUPPORT BIT(0)
	u32			msi_count;
};

#ifdef CONFIG_GENERIC_MSI_IRQ
int vfio_cdx_set_irqs_ioctl(struct vfio_cdx_device *vdev,
			    u32 flags, unsigned int index,
			    unsigned int start, unsigned int count,
			    void *data);

void vfio_cdx_irqs_cleanup(struct vfio_cdx_device *vdev);
#else
static int vfio_cdx_set_irqs_ioctl(struct vfio_cdx_device *vdev,
				   u32 flags, unsigned int index,
				   unsigned int start, unsigned int count,
				   void *data)
{
	return -EINVAL;
}

static void vfio_cdx_irqs_cleanup(struct vfio_cdx_device *vdev)
{
}
#endif

#endif /* VFIO_CDX_PRIVATE_H */