da119f387e
FSL uses the internal reflck to implement the open_device() functionality, conversion to the core code is straightforward. The decision on which set to be part of is trivially based on the is_fsl_mc_bus_dprc() and we use a 'struct device *' pointer as the set_id. The dev_set lock is protecting the interrupts setup. The FSL MC devices are using MSIs and only the DPRC device is allocating the MSIs from the MSI domain. The other devices just take interrupts from a pool. The lock is protecting the access to this pool. Signed-off-by: Yishai Hadas <yishaih@nvidia.com> Tested-by: Diana Craciun OSS <diana.craciun@oss.nxp.com> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> Link: https://lore.kernel.org/r/6-v4-9ea22c5e6afb+1adf-vfio_reflck_jgg@nvidia.com Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
50 lines
1.2 KiB
C
50 lines
1.2 KiB
C
/* SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause) */
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/*
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* Copyright 2013-2016 Freescale Semiconductor Inc.
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* Copyright 2016,2019-2020 NXP
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*/
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#ifndef VFIO_FSL_MC_PRIVATE_H
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#define VFIO_FSL_MC_PRIVATE_H
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#define VFIO_FSL_MC_OFFSET_SHIFT 40
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#define VFIO_FSL_MC_OFFSET_MASK (((u64)(1) << VFIO_FSL_MC_OFFSET_SHIFT) - 1)
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#define VFIO_FSL_MC_OFFSET_TO_INDEX(off) ((off) >> VFIO_FSL_MC_OFFSET_SHIFT)
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#define VFIO_FSL_MC_INDEX_TO_OFFSET(index) \
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((u64)(index) << VFIO_FSL_MC_OFFSET_SHIFT)
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struct vfio_fsl_mc_irq {
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u32 flags;
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u32 count;
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struct eventfd_ctx *trigger;
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char *name;
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};
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struct vfio_fsl_mc_region {
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u32 flags;
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u32 type;
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u64 addr;
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resource_size_t size;
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void __iomem *ioaddr;
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};
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struct vfio_fsl_mc_device {
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struct vfio_device vdev;
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struct fsl_mc_device *mc_dev;
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struct notifier_block nb;
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struct vfio_fsl_mc_region *regions;
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struct mutex igate;
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struct vfio_fsl_mc_irq *mc_irqs;
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};
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extern int vfio_fsl_mc_set_irqs_ioctl(struct vfio_fsl_mc_device *vdev,
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u32 flags, unsigned int index,
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unsigned int start, unsigned int count,
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void *data);
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void vfio_fsl_mc_irqs_cleanup(struct vfio_fsl_mc_device *vdev);
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#endif /* VFIO_FSL_MC_PRIVATE_H */
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