diff options
| author | Christoph Hellwig <hch@lst.de> | 2021-09-24 17:56:59 +0200 |
|---|---|---|
| committer | Alex Williamson <alex.williamson@redhat.com> | 2021-09-30 12:46:44 -0600 |
| commit | 8cc02d22d7e1596ed687c4ff967c32056c2bef3e (patch) | |
| tree | fda8354e88df5ef4d98dc7092d074838e1b5de25 /drivers/vfio | |
| parent | 67462037872d5ca57dc4674cccff191947b9b43e (diff) | |
vfio: move the vfio_iommu_driver_ops interface out of <linux/vfio.h>
Create a new private drivers/vfio/vfio.h header for the interface between
the VFIO core and the iommu drivers.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Link: https://lore.kernel.org/r/20210924155705.4258-10-hch@lst.de
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Diffstat (limited to 'drivers/vfio')
| -rw-r--r-- | drivers/vfio/vfio.c | 1 | ||||
| -rw-r--r-- | drivers/vfio/vfio.h | 47 | ||||
| -rw-r--r-- | drivers/vfio/vfio_iommu_spapr_tce.c | 1 | ||||
| -rw-r--r-- | drivers/vfio/vfio_iommu_type1.c | 1 |
4 files changed, 50 insertions, 0 deletions
diff --git a/drivers/vfio/vfio.c b/drivers/vfio/vfio.c index 2c1c7316aa19..6589e296ef34 100644 --- a/drivers/vfio/vfio.c +++ b/drivers/vfio/vfio.c @@ -32,6 +32,7 @@ #include <linux/vfio.h> #include <linux/wait.h> #include <linux/sched/signal.h> +#include "vfio.h" #define DRIVER_VERSION "0.3" #define DRIVER_AUTHOR "Alex Williamson <alex.williamson@redhat.com>" diff --git a/drivers/vfio/vfio.h b/drivers/vfio/vfio.h new file mode 100644 index 000000000000..a78de649eb2f --- /dev/null +++ b/drivers/vfio/vfio.h @@ -0,0 +1,47 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright (C) 2012 Red Hat, Inc. All rights reserved. + * Author: Alex Williamson <alex.williamson@redhat.com> + */ + +/* events for the backend driver notify callback */ +enum vfio_iommu_notify_type { + VFIO_IOMMU_CONTAINER_CLOSE = 0, +}; + +/** + * struct vfio_iommu_driver_ops - VFIO IOMMU driver callbacks + */ +struct vfio_iommu_driver_ops { + char *name; + struct module *owner; + void *(*open)(unsigned long arg); + void (*release)(void *iommu_data); + long (*ioctl)(void *iommu_data, unsigned int cmd, + unsigned long arg); + int (*attach_group)(void *iommu_data, + struct iommu_group *group); + void (*detach_group)(void *iommu_data, + struct iommu_group *group); + int (*pin_pages)(void *iommu_data, + struct iommu_group *group, + unsigned long *user_pfn, + int npage, int prot, + unsigned long *phys_pfn); + int (*unpin_pages)(void *iommu_data, + unsigned long *user_pfn, int npage); + int (*register_notifier)(void *iommu_data, + unsigned long *events, + struct notifier_block *nb); + int (*unregister_notifier)(void *iommu_data, + struct notifier_block *nb); + int (*dma_rw)(void *iommu_data, dma_addr_t user_iova, + void *data, size_t count, bool write); + struct iommu_domain *(*group_iommu_domain)(void *iommu_data, + struct iommu_group *group); + void (*notify)(void *iommu_data, + enum vfio_iommu_notify_type event); +}; + +int vfio_register_iommu_driver(const struct vfio_iommu_driver_ops *ops); +void vfio_unregister_iommu_driver(const struct vfio_iommu_driver_ops *ops); diff --git a/drivers/vfio/vfio_iommu_spapr_tce.c b/drivers/vfio/vfio_iommu_spapr_tce.c index fe888b5dcc00..3efd09faeca4 100644 --- a/drivers/vfio/vfio_iommu_spapr_tce.c +++ b/drivers/vfio/vfio_iommu_spapr_tce.c @@ -20,6 +20,7 @@ #include <linux/sched/mm.h> #include <linux/sched/signal.h> #include <linux/mm.h> +#include "vfio.h" #include <asm/iommu.h> #include <asm/tce.h> diff --git a/drivers/vfio/vfio_iommu_type1.c b/drivers/vfio/vfio_iommu_type1.c index 0e9217687f5c..2e51e4390c15 100644 --- a/drivers/vfio/vfio_iommu_type1.c +++ b/drivers/vfio/vfio_iommu_type1.c @@ -40,6 +40,7 @@ #include <linux/notifier.h> #include <linux/dma-iommu.h> #include <linux/irqdomain.h> +#include "vfio.h" #define DRIVER_VERSION "0.2" #define DRIVER_AUTHOR "Alex Williamson <alex.williamson@redhat.com>" |