summaryrefslogtreecommitdiff
path: root/drivers/vfio
diff options
context:
space:
mode:
authorChristoph Hellwig <hch@lst.de>2021-09-24 17:56:59 +0200
committerAlex Williamson <alex.williamson@redhat.com>2021-09-30 12:46:44 -0600
commit8cc02d22d7e1596ed687c4ff967c32056c2bef3e (patch)
treefda8354e88df5ef4d98dc7092d074838e1b5de25 /drivers/vfio
parent67462037872d5ca57dc4674cccff191947b9b43e (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.c1
-rw-r--r--drivers/vfio/vfio.h47
-rw-r--r--drivers/vfio/vfio_iommu_spapr_tce.c1
-rw-r--r--drivers/vfio/vfio_iommu_type1.c1
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>"