path: root/drivers/vfio/fsl-mc/vfio_fsl_mc_private.h

/* SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause) */
/*
 * Copyright 2013-2016 Freescale Semiconductor Inc.
 * Copyright 2016,2019-2020 NXP
 */

#ifndef VFIO_FSL_MC_PRIVATE_H
#define VFIO_FSL_MC_PRIVATE_H

#define VFIO_FSL_MC_OFFSET_SHIFT    40
#define VFIO_FSL_MC_OFFSET_MASK (((u64)(1) << VFIO_FSL_MC_OFFSET_SHIFT) - 1)

#define VFIO_FSL_MC_OFFSET_TO_INDEX(off) ((off) >> VFIO_FSL_MC_OFFSET_SHIFT)

#define VFIO_FSL_MC_INDEX_TO_OFFSET(index)	\
	((u64)(index) << VFIO_FSL_MC_OFFSET_SHIFT)

struct vfio_fsl_mc_irq {
	u32         flags;
	u32         count;
	struct eventfd_ctx  *trigger;
	char            *name;
};

struct vfio_fsl_mc_region {
	u32			flags;
	u32			type;
	u64			addr;
	resource_size_t		size;
	void __iomem		*ioaddr;
};

struct vfio_fsl_mc_device {
	struct vfio_device		vdev;
	struct fsl_mc_device		*mc_dev;
	struct notifier_block        nb;
	struct vfio_fsl_mc_region	*regions;
	struct mutex         igate;
	struct vfio_fsl_mc_irq      *mc_irqs;
};

int vfio_fsl_mc_set_irqs_ioctl(struct vfio_fsl_mc_device *vdev,
			       u32 flags, unsigned int index,
			       unsigned int start, unsigned int count,
			       void *data);

void vfio_fsl_mc_irqs_cleanup(struct vfio_fsl_mc_device *vdev);

#endif /* VFIO_FSL_MC_PRIVATE_H */