d1877e639b
The use of 'extern' in function prototypes has been disrecommended in the kernel coding style for several years now, remove them from all vfio related files so contributors no longer need to decide between style and consistency. Reviewed-by: Kevin Tian <kevin.tian@intel.com> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Reviewed-by: Eric Farman <farman@linux.ibm.com> Reviewed-by: Eric Auger <eric.auger@redhat.com> Reviewed-by: Cornelia Huck <cohuck@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Link: https://lore.kernel.org/r/165471414407.203056.474032786990662279.stgit@omen Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
117 lines
3.2 KiB
C
117 lines
3.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (C) 2013 - Virtual Open Systems
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* Author: Antonios Motakis <a.motakis@virtualopensystems.com>
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*/
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#ifndef VFIO_PLATFORM_PRIVATE_H
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#define VFIO_PLATFORM_PRIVATE_H
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#include <linux/types.h>
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#include <linux/interrupt.h>
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#include <linux/vfio.h>
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#define VFIO_PLATFORM_OFFSET_SHIFT 40
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#define VFIO_PLATFORM_OFFSET_MASK (((u64)(1) << VFIO_PLATFORM_OFFSET_SHIFT) - 1)
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#define VFIO_PLATFORM_OFFSET_TO_INDEX(off) \
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(off >> VFIO_PLATFORM_OFFSET_SHIFT)
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#define VFIO_PLATFORM_INDEX_TO_OFFSET(index) \
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((u64)(index) << VFIO_PLATFORM_OFFSET_SHIFT)
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struct vfio_platform_irq {
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u32 flags;
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u32 count;
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int hwirq;
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char *name;
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struct eventfd_ctx *trigger;
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bool masked;
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spinlock_t lock;
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struct virqfd *unmask;
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struct virqfd *mask;
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};
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struct vfio_platform_region {
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u64 addr;
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resource_size_t size;
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u32 flags;
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u32 type;
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#define VFIO_PLATFORM_REGION_TYPE_MMIO 1
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#define VFIO_PLATFORM_REGION_TYPE_PIO 2
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void __iomem *ioaddr;
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};
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struct vfio_platform_device {
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struct vfio_device vdev;
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struct vfio_platform_region *regions;
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u32 num_regions;
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struct vfio_platform_irq *irqs;
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u32 num_irqs;
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struct mutex igate;
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const char *compat;
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const char *acpihid;
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struct module *reset_module;
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struct device *device;
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/*
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* These fields should be filled by the bus specific binder
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*/
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void *opaque;
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const char *name;
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uint32_t flags;
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/* callbacks to discover device resources */
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struct resource*
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(*get_resource)(struct vfio_platform_device *vdev, int i);
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int (*get_irq)(struct vfio_platform_device *vdev, int i);
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int (*of_reset)(struct vfio_platform_device *vdev);
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bool reset_required;
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};
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typedef int (*vfio_platform_reset_fn_t)(struct vfio_platform_device *vdev);
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struct vfio_platform_reset_node {
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struct list_head link;
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char *compat;
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struct module *owner;
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vfio_platform_reset_fn_t of_reset;
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};
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int vfio_platform_probe_common(struct vfio_platform_device *vdev,
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struct device *dev);
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void vfio_platform_remove_common(struct vfio_platform_device *vdev);
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int vfio_platform_irq_init(struct vfio_platform_device *vdev);
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void vfio_platform_irq_cleanup(struct vfio_platform_device *vdev);
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int vfio_platform_set_irqs_ioctl(struct vfio_platform_device *vdev,
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uint32_t flags, unsigned index,
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unsigned start, unsigned count, void *data);
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void __vfio_platform_register_reset(struct vfio_platform_reset_node *n);
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void vfio_platform_unregister_reset(const char *compat,
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vfio_platform_reset_fn_t fn);
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#define vfio_platform_register_reset(__compat, __reset) \
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static struct vfio_platform_reset_node __reset ## _node = { \
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.owner = THIS_MODULE, \
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.compat = __compat, \
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.of_reset = __reset, \
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}; \
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__vfio_platform_register_reset(&__reset ## _node)
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#define module_vfio_reset_handler(compat, reset) \
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MODULE_ALIAS("vfio-reset:" compat); \
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static int __init reset ## _module_init(void) \
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{ \
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vfio_platform_register_reset(compat, reset); \
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return 0; \
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}; \
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static void __exit reset ## _module_exit(void) \
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{ \
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vfio_platform_unregister_reset(compat, reset); \
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}; \
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module_init(reset ## _module_init); \
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module_exit(reset ## _module_exit)
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#endif /* VFIO_PLATFORM_PRIVATE_H */
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