"Allow IOMMUFD to bind to devices even if the platform cannot isolate "
"the MSI interrupt window. Enabling this is a security weakness.");
-/*
- * A iommufd_device object represents the binding relationship between a
- * consuming driver and the iommufd. These objects are created/destroyed by
- * external drivers, not by userspace.
- */
-struct iommufd_device {
- struct iommufd_object obj;
- struct iommufd_ctx *ictx;
- struct iommufd_hw_pagetable *hwpt;
- /* Head at iommufd_hw_pagetable::devices */
- struct list_head devices_item;
- /* always the physical device */
- struct device *dev;
- struct iommu_group *group;
- bool enforce_cache_coherency;
-};
-
void iommufd_device_destroy(struct iommufd_object *obj)
{
struct iommufd_device *idev =
iommu_device_release_dma_owner(idev->dev);
iommu_group_put(idev->group);
- iommufd_ctx_put(idev->ictx);
+ if (!iommufd_selftest_is_mock_dev(idev->dev))
+ iommufd_ctx_put(idev->ictx);
}
/**
goto out_release_owner;
}
idev->ictx = ictx;
- iommufd_ctx_get(ictx);
+ if (!iommufd_selftest_is_mock_dev(dev))
+ iommufd_ctx_get(ictx);
idev->dev = dev;
idev->enforce_cache_coherency =
device_iommu_capable(dev, IOMMU_CAP_ENFORCE_CACHE_COHERENCY);
* operation from the device (eg a simple DMA) cannot trigger an
* interrupt outside this iommufd context.
*/
- if (!iommu_group_has_isolated_msi(idev->group)) {
+ if (!iommufd_selftest_is_mock_dev(idev->dev) &&
+ !iommu_group_has_isolated_msi(idev->group)) {
if (!allow_unsafe_interrupts)
return -EPERM;
{
struct iommufd_device *cur_dev;
+ lockdep_assert_held(&hwpt->devices_lock);
+
list_for_each_entry(cur_dev, &hwpt->devices, devices_item)
if (cur_dev->group == group)
return true;
return false;
}
-static int iommufd_device_do_attach(struct iommufd_device *idev,
- struct iommufd_hw_pagetable *hwpt)
+int iommufd_hw_pagetable_attach(struct iommufd_hw_pagetable *hwpt,
+ struct iommufd_device *idev)
{
phys_addr_t sw_msi_start = PHYS_ADDR_MAX;
int rc;
- mutex_lock(&hwpt->devices_lock);
+ lockdep_assert_held(&hwpt->devices_lock);
+
+ if (WARN_ON(idev->hwpt))
+ return -EINVAL;
/*
* Try to upgrade the domain we have, it is an iommu driver bug to
hwpt->domain);
if (!hwpt->enforce_cache_coherency) {
WARN_ON(list_empty(&hwpt->devices));
- rc = -EINVAL;
- goto out_unlock;
+ return -EINVAL;
}
}
rc = iopt_table_enforce_group_resv_regions(&hwpt->ioas->iopt, idev->dev,
idev->group, &sw_msi_start);
if (rc)
- goto out_unlock;
+ return rc;
rc = iommufd_device_setup_msi(idev, hwpt, sw_msi_start);
if (rc)
- goto out_iova;
+ goto err_unresv;
/*
* FIXME: Hack around missing a device-centric iommu api, only attach to
if (!iommufd_hw_pagetable_has_group(hwpt, idev->group)) {
rc = iommu_attach_group(hwpt->domain, idev->group);
if (rc)
- goto out_iova;
-
- if (list_empty(&hwpt->devices)) {
- rc = iopt_table_add_domain(&hwpt->ioas->iopt,
- hwpt->domain);
- if (rc)
- goto out_detach;
- }
+ goto err_unresv;
}
+ return 0;
+err_unresv:
+ iopt_remove_reserved_iova(&hwpt->ioas->iopt, idev->dev);
+ return rc;
+}
+
+void iommufd_hw_pagetable_detach(struct iommufd_hw_pagetable *hwpt,
+ struct iommufd_device *idev)
+{
+ if (!iommufd_hw_pagetable_has_group(hwpt, idev->group))
+ iommu_detach_group(hwpt->domain, idev->group);
+ iopt_remove_reserved_iova(&hwpt->ioas->iopt, idev->dev);
+}
+
+static int iommufd_device_do_attach(struct iommufd_device *idev,
+ struct iommufd_hw_pagetable *hwpt)
+{
+ int rc;
+
+ mutex_lock(&hwpt->devices_lock);
+ rc = iommufd_hw_pagetable_attach(hwpt, idev);
+ if (rc)
+ goto out_unlock;
idev->hwpt = hwpt;
refcount_inc(&hwpt->obj.users);
list_add(&idev->devices_item, &hwpt->devices);
- mutex_unlock(&hwpt->devices_lock);
- return 0;
-
-out_detach:
- iommu_detach_group(hwpt->domain, idev->group);
-out_iova:
- iopt_remove_reserved_iova(&hwpt->ioas->iopt, idev->dev);
out_unlock:
mutex_unlock(&hwpt->devices_lock);
return rc;
if (!hwpt->auto_domain)
continue;
+ if (!iommufd_lock_obj(&hwpt->obj))
+ continue;
rc = iommufd_device_do_attach(idev, hwpt);
+ iommufd_put_object(&hwpt->obj);
/*
* -EINVAL means the domain is incompatible with the device.
goto out_unlock;
}
- hwpt = iommufd_hw_pagetable_alloc(idev->ictx, ioas, idev->dev);
+ hwpt = iommufd_hw_pagetable_alloc(idev->ictx, ioas, idev, true);
if (IS_ERR(hwpt)) {
rc = PTR_ERR(hwpt);
goto out_unlock;
}
hwpt->auto_domain = true;
- rc = iommufd_device_do_attach(idev, hwpt);
- if (rc)
- goto out_abort;
- list_add_tail(&hwpt->hwpt_item, &ioas->hwpt_list);
-
mutex_unlock(&ioas->mutex);
iommufd_object_finalize(idev->ictx, &hwpt->obj);
return 0;
-
-out_abort:
- iommufd_object_abort_and_destroy(idev->ictx, &hwpt->obj);
out_unlock:
mutex_unlock(&ioas->mutex);
return rc;
{
struct iommufd_hw_pagetable *hwpt = idev->hwpt;
- mutex_lock(&hwpt->ioas->mutex);
mutex_lock(&hwpt->devices_lock);
list_del(&idev->devices_item);
- if (!iommufd_hw_pagetable_has_group(hwpt, idev->group)) {
- if (list_empty(&hwpt->devices)) {
- iopt_table_remove_domain(&hwpt->ioas->iopt,
- hwpt->domain);
- list_del(&hwpt->hwpt_item);
- }
- iommu_detach_group(hwpt->domain, idev->group);
- }
- iopt_remove_reserved_iova(&hwpt->ioas->iopt, idev->dev);
+ idev->hwpt = NULL;
+ iommufd_hw_pagetable_detach(hwpt, idev);
mutex_unlock(&hwpt->devices_lock);
- mutex_unlock(&hwpt->ioas->mutex);
if (hwpt->auto_domain)
iommufd_object_destroy_user(idev->ictx, &hwpt->obj);
else
refcount_dec(&hwpt->obj.users);
- idev->hwpt = NULL;
-
refcount_dec(&idev->obj.users);
}
EXPORT_SYMBOL_NS_GPL(iommufd_device_detach, IOMMUFD);
struct iommufd_access *access =
container_of(obj, struct iommufd_access, obj);
- iopt_remove_access(&access->ioas->iopt, access);
+ if (access->ioas) {
+ iopt_remove_access(&access->ioas->iopt, access);
+ refcount_dec(&access->ioas->obj.users);
+ access->ioas = NULL;
+ }
iommufd_ctx_put(access->ictx);
- refcount_dec(&access->ioas->obj.users);
}
/**
* iommufd_access_create - Create an iommufd_access
* @ictx: iommufd file descriptor
- * @ioas_id: ID for a IOMMUFD_OBJ_IOAS
* @ops: Driver's ops to associate with the access
* @data: Opaque data to pass into ops functions
+ * @id: Output ID number to return to userspace for this access
*
* An iommufd_access allows a driver to read/write to the IOAS without using
* DMA. The underlying CPU memory can be accessed using the
* The provided ops are required to use iommufd_access_pin_pages().
*/
struct iommufd_access *
-iommufd_access_create(struct iommufd_ctx *ictx, u32 ioas_id,
- const struct iommufd_access_ops *ops, void *data)
+iommufd_access_create(struct iommufd_ctx *ictx,
+ const struct iommufd_access_ops *ops, void *data, u32 *id)
{
struct iommufd_access *access;
- struct iommufd_object *obj;
- int rc;
/*
* There is no uAPI for the access object, but to keep things symmetric
access->data = data;
access->ops = ops;
- obj = iommufd_get_object(ictx, ioas_id, IOMMUFD_OBJ_IOAS);
- if (IS_ERR(obj)) {
- rc = PTR_ERR(obj);
- goto out_abort;
- }
- access->ioas = container_of(obj, struct iommufd_ioas, obj);
- iommufd_ref_to_users(obj);
-
if (ops->needs_pin_pages)
access->iova_alignment = PAGE_SIZE;
else
access->iova_alignment = 1;
- rc = iopt_add_access(&access->ioas->iopt, access);
- if (rc)
- goto out_put_ioas;
/* The calling driver is a user until iommufd_access_destroy() */
refcount_inc(&access->obj.users);
access->ictx = ictx;
iommufd_ctx_get(ictx);
iommufd_object_finalize(ictx, &access->obj);
+ *id = access->obj.id;
return access;
-out_put_ioas:
- refcount_dec(&access->ioas->obj.users);
-out_abort:
- iommufd_object_abort(ictx, &access->obj);
- return ERR_PTR(rc);
}
EXPORT_SYMBOL_NS_GPL(iommufd_access_create, IOMMUFD);
}
EXPORT_SYMBOL_NS_GPL(iommufd_access_destroy, IOMMUFD);
+int iommufd_access_attach(struct iommufd_access *access, u32 ioas_id)
+{
+ struct iommufd_ioas *new_ioas;
+ int rc = 0;
+
+ if (access->ioas)
+ return -EINVAL;
+
+ new_ioas = iommufd_get_ioas(access->ictx, ioas_id);
+ if (IS_ERR(new_ioas))
+ return PTR_ERR(new_ioas);
+
+ rc = iopt_add_access(&new_ioas->iopt, access);
+ if (rc) {
+ iommufd_put_object(&new_ioas->obj);
+ return rc;
+ }
+ iommufd_ref_to_users(&new_ioas->obj);
+
+ access->ioas = new_ioas;
+ return 0;
+}
+EXPORT_SYMBOL_NS_GPL(iommufd_access_attach, IOMMUFD);
+
/**
* iommufd_access_notify_unmap - Notify users of an iopt to stop using it
* @iopt: iopt to work on
return rc;
}
EXPORT_SYMBOL_NS_GPL(iommufd_access_rw, IOMMUFD);
-
-#ifdef CONFIG_IOMMUFD_TEST
-/*
- * Creating a real iommufd_device is too hard, bypass creating a iommufd_device
- * and go directly to attaching a domain.
- */
-struct iommufd_hw_pagetable *
-iommufd_device_selftest_attach(struct iommufd_ctx *ictx,
- struct iommufd_ioas *ioas,
- struct device *mock_dev)
-{
- struct iommufd_hw_pagetable *hwpt;
- int rc;
-
- hwpt = iommufd_hw_pagetable_alloc(ictx, ioas, mock_dev);
- if (IS_ERR(hwpt))
- return hwpt;
-
- rc = iopt_table_add_domain(&hwpt->ioas->iopt, hwpt->domain);
- if (rc)
- goto out_hwpt;
-
- refcount_inc(&hwpt->obj.users);
- iommufd_object_finalize(ictx, &hwpt->obj);
- return hwpt;
-
-out_hwpt:
- iommufd_object_abort_and_destroy(ictx, &hwpt->obj);
- return ERR_PTR(rc);
-}
-
-void iommufd_device_selftest_detach(struct iommufd_ctx *ictx,
- struct iommufd_hw_pagetable *hwpt)
-{
- iopt_table_remove_domain(&hwpt->ioas->iopt, hwpt->domain);
- refcount_dec(&hwpt->obj.users);
-}
-#endif
WARN_ON(!list_empty(&hwpt->devices));
- iommu_domain_free(hwpt->domain);
+ if (!list_empty(&hwpt->hwpt_item)) {
+ mutex_lock(&hwpt->ioas->mutex);
+ list_del(&hwpt->hwpt_item);
+ mutex_unlock(&hwpt->ioas->mutex);
+
+ iopt_table_remove_domain(&hwpt->ioas->iopt, hwpt->domain);
+ }
+
+ if (hwpt->domain)
+ iommu_domain_free(hwpt->domain);
+
refcount_dec(&hwpt->ioas->obj.users);
mutex_destroy(&hwpt->devices_lock);
}
* iommufd_hw_pagetable_alloc() - Get an iommu_domain for a device
* @ictx: iommufd context
* @ioas: IOAS to associate the domain with
- * @dev: Device to get an iommu_domain for
+ * @idev: Device to get an iommu_domain for
+ * @immediate_attach: True if idev should be attached to the hwpt
*
- * Allocate a new iommu_domain and return it as a hw_pagetable.
+ * Allocate a new iommu_domain and return it as a hw_pagetable. The HWPT
+ * will be linked to the given ioas and upon return the underlying iommu_domain
+ * is fully popoulated.
*/
struct iommufd_hw_pagetable *
iommufd_hw_pagetable_alloc(struct iommufd_ctx *ictx, struct iommufd_ioas *ioas,
- struct device *dev)
+ struct iommufd_device *idev, bool immediate_attach)
{
struct iommufd_hw_pagetable *hwpt;
int rc;
+ lockdep_assert_held(&ioas->mutex);
+
hwpt = iommufd_object_alloc(ictx, hwpt, IOMMUFD_OBJ_HW_PAGETABLE);
if (IS_ERR(hwpt))
return hwpt;
- hwpt->domain = iommu_domain_alloc(dev->bus);
- if (!hwpt->domain) {
- rc = -ENOMEM;
- goto out_abort;
- }
-
INIT_LIST_HEAD(&hwpt->devices);
INIT_LIST_HEAD(&hwpt->hwpt_item);
mutex_init(&hwpt->devices_lock);
/* Pairs with iommufd_hw_pagetable_destroy() */
refcount_inc(&ioas->obj.users);
hwpt->ioas = ioas;
+
+ hwpt->domain = iommu_domain_alloc(idev->dev->bus);
+ if (!hwpt->domain) {
+ rc = -ENOMEM;
+ goto out_abort;
+ }
+
+ mutex_lock(&hwpt->devices_lock);
+
+ /*
+ * immediate_attach exists only to accommodate iommu drivers that cannot
+ * directly allocate a domain. These drivers do not finish creating the
+ * domain until attach is completed. Thus we must have this call
+ * sequence. Once those drivers are fixed this should be removed.
+ */
+ if (immediate_attach) {
+ rc = iommufd_hw_pagetable_attach(hwpt, idev);
+ if (rc)
+ goto out_unlock;
+ }
+
+ rc = iopt_table_add_domain(&hwpt->ioas->iopt, hwpt->domain);
+ if (rc)
+ goto out_detach;
+ list_add_tail(&hwpt->hwpt_item, &hwpt->ioas->hwpt_list);
+
+ if (immediate_attach) {
+ /* See iommufd_device_do_attach() */
+ refcount_inc(&hwpt->obj.users);
+ idev->hwpt = hwpt;
+ list_add(&idev->devices_item, &hwpt->devices);
+ }
+
+ mutex_unlock(&hwpt->devices_lock);
return hwpt;
+out_detach:
+ if (immediate_attach)
+ iommufd_hw_pagetable_detach(hwpt, idev);
+out_unlock:
+ mutex_unlock(&hwpt->devices_lock);
out_abort:
- iommufd_object_abort(ictx, &hwpt->obj);
+ iommufd_object_abort_and_destroy(ictx, &hwpt->obj);
return ERR_PTR(rc);
}
if (cmd->__reserved)
return -EOPNOTSUPP;
- ioas = iommufd_get_ioas(ucmd, cmd->ioas_id);
+ ioas = iommufd_get_ioas(ucmd->ictx, cmd->ioas_id);
if (IS_ERR(ioas))
return PTR_ERR(ioas);
if (cmd->__reserved)
return -EOPNOTSUPP;
- ioas = iommufd_get_ioas(ucmd, cmd->ioas_id);
+ ioas = iommufd_get_ioas(ucmd->ictx, cmd->ioas_id);
if (IS_ERR(ioas))
return PTR_ERR(ioas);
iopt = &ioas->iopt;
if (cmd->iova >= ULONG_MAX || cmd->length >= ULONG_MAX)
return -EOVERFLOW;
- ioas = iommufd_get_ioas(ucmd, cmd->ioas_id);
+ ioas = iommufd_get_ioas(ucmd->ictx, cmd->ioas_id);
if (IS_ERR(ioas))
return PTR_ERR(ioas);
cmd->dst_iova >= ULONG_MAX)
return -EOVERFLOW;
- src_ioas = iommufd_get_ioas(ucmd, cmd->src_ioas_id);
+ src_ioas = iommufd_get_ioas(ucmd->ictx, cmd->src_ioas_id);
if (IS_ERR(src_ioas))
return PTR_ERR(src_ioas);
rc = iopt_get_pages(&src_ioas->iopt, cmd->src_iova, cmd->length,
if (rc)
return rc;
- dst_ioas = iommufd_get_ioas(ucmd, cmd->dst_ioas_id);
+ dst_ioas = iommufd_get_ioas(ucmd->ictx, cmd->dst_ioas_id);
if (IS_ERR(dst_ioas)) {
rc = PTR_ERR(dst_ioas);
goto out_pages;
unsigned long unmapped = 0;
int rc;
- ioas = iommufd_get_ioas(ucmd, cmd->ioas_id);
+ ioas = iommufd_get_ioas(ucmd->ictx, cmd->ioas_id);
if (IS_ERR(ioas))
return PTR_ERR(ioas);
if (cmd->__reserved)
return -EOPNOTSUPP;
- ioas = iommufd_get_ioas(ucmd, cmd->object_id);
+ ioas = iommufd_get_ioas(ucmd->ictx, cmd->object_id);
if (IS_ERR(ioas))
return PTR_ERR(ioas);
struct iommu_domain;
struct iommu_group;
struct iommu_option;
+struct iommufd_device;
struct iommufd_ctx {
struct file *file;
struct list_head hwpt_list;
};
-static inline struct iommufd_ioas *iommufd_get_ioas(struct iommufd_ucmd *ucmd,
+static inline struct iommufd_ioas *iommufd_get_ioas(struct iommufd_ctx *ictx,
u32 id)
{
- return container_of(iommufd_get_object(ucmd->ictx, id,
+ return container_of(iommufd_get_object(ictx, id,
IOMMUFD_OBJ_IOAS),
struct iommufd_ioas, obj);
}
struct iommufd_hw_pagetable *
iommufd_hw_pagetable_alloc(struct iommufd_ctx *ictx, struct iommufd_ioas *ioas,
- struct device *dev);
+ struct iommufd_device *idev, bool immediate_attach);
+int iommufd_hw_pagetable_attach(struct iommufd_hw_pagetable *hwpt,
+ struct iommufd_device *idev);
+void iommufd_hw_pagetable_detach(struct iommufd_hw_pagetable *hwpt,
+ struct iommufd_device *idev);
void iommufd_hw_pagetable_destroy(struct iommufd_object *obj);
+/*
+ * A iommufd_device object represents the binding relationship between a
+ * consuming driver and the iommufd. These objects are created/destroyed by
+ * external drivers, not by userspace.
+ */
+struct iommufd_device {
+ struct iommufd_object obj;
+ struct iommufd_ctx *ictx;
+ struct iommufd_hw_pagetable *hwpt;
+ /* Head at iommufd_hw_pagetable::devices */
+ struct list_head devices_item;
+ /* always the physical device */
+ struct device *dev;
+ struct iommu_group *group;
+ bool enforce_cache_coherency;
+};
+
void iommufd_device_destroy(struct iommufd_object *obj);
struct iommufd_access {
void iommufd_access_destroy_object(struct iommufd_object *obj);
#ifdef CONFIG_IOMMUFD_TEST
-struct iommufd_hw_pagetable *
-iommufd_device_selftest_attach(struct iommufd_ctx *ictx,
- struct iommufd_ioas *ioas,
- struct device *mock_dev);
-void iommufd_device_selftest_detach(struct iommufd_ctx *ictx,
- struct iommufd_hw_pagetable *hwpt);
int iommufd_test(struct iommufd_ucmd *ucmd);
void iommufd_selftest_destroy(struct iommufd_object *obj);
extern size_t iommufd_test_memory_limit;
bool iommufd_should_fail(void);
void __init iommufd_test_init(void);
void iommufd_test_exit(void);
+bool iommufd_selftest_is_mock_dev(struct device *dev);
#else
static inline void iommufd_test_syz_conv_iova_id(struct iommufd_ucmd *ucmd,
unsigned int ioas_id,
static inline void iommufd_test_exit(void)
{
}
+static inline bool iommufd_selftest_is_mock_dev(struct device *dev)
+{
+ return false;
+}
#endif
#endif
__aligned_u64 length;
} add_reserved;
struct {
- __u32 out_device_id;
+ __u32 out_stdev_id;
__u32 out_hwpt_id;
} mock_domain;
struct {
return;
*flags &= ~(u32)MOCK_FLAGS_ACCESS_SYZ;
- ioas = iommufd_get_ioas(ucmd, ioas_id);
+ ioas = iommufd_get_ioas(ucmd->ictx, ioas_id);
if (IS_ERR(ioas))
return;
*iova = iommufd_test_syz_conv_iova(&ioas->iopt, iova);
TYPE_IDEV,
};
+struct mock_dev {
+ struct device dev;
+};
+
struct selftest_obj {
struct iommufd_object obj;
enum selftest_obj_type type;
union {
struct {
- struct iommufd_hw_pagetable *hwpt;
+ struct iommufd_device *idev;
struct iommufd_ctx *ictx;
- struct device mock_dev;
+ struct mock_dev *mock_dev;
} idev;
};
};
+static void mock_domain_blocking_free(struct iommu_domain *domain)
+{
+}
+
+static int mock_domain_nop_attach(struct iommu_domain *domain,
+ struct device *dev)
+{
+ return 0;
+}
+
+static const struct iommu_domain_ops mock_blocking_ops = {
+ .free = mock_domain_blocking_free,
+ .attach_dev = mock_domain_nop_attach,
+};
+
+static struct iommu_domain mock_blocking_domain = {
+ .type = IOMMU_DOMAIN_BLOCKED,
+ .ops = &mock_blocking_ops,
+};
+
static struct iommu_domain *mock_domain_alloc(unsigned int iommu_domain_type)
{
struct mock_iommu_domain *mock;
+ if (iommu_domain_type == IOMMU_DOMAIN_BLOCKED)
+ return &mock_blocking_domain;
+
if (WARN_ON(iommu_domain_type != IOMMU_DOMAIN_UNMANAGED))
return NULL;
return (xa_to_value(ent) & MOCK_PFN_MASK) * MOCK_IO_PAGE_SIZE;
}
+static bool mock_domain_capable(struct device *dev, enum iommu_cap cap)
+{
+ return cap == IOMMU_CAP_CACHE_COHERENCY;
+}
+
+static void mock_domain_set_plaform_dma_ops(struct device *dev)
+{
+ /*
+ * mock doesn't setup default domains because we can't hook into the
+ * normal probe path
+ */
+}
+
static const struct iommu_ops mock_ops = {
.owner = THIS_MODULE,
.pgsize_bitmap = MOCK_IO_PAGE_SIZE,
.domain_alloc = mock_domain_alloc,
+ .capable = mock_domain_capable,
+ .set_platform_dma_ops = mock_domain_set_plaform_dma_ops,
.default_domain_ops =
&(struct iommu_domain_ops){
.free = mock_domain_free,
+ .attach_dev = mock_domain_nop_attach,
.map_pages = mock_domain_map_pages,
.unmap_pages = mock_domain_unmap_pages,
.iova_to_phys = mock_domain_iova_to_phys,
},
};
+static struct iommu_device mock_iommu_device = {
+ .ops = &mock_ops,
+};
+
static inline struct iommufd_hw_pagetable *
get_md_pagetable(struct iommufd_ucmd *ucmd, u32 mockpt_id,
struct mock_iommu_domain **mock)
return hwpt;
}
+static struct bus_type iommufd_mock_bus_type = {
+ .name = "iommufd_mock",
+ .iommu_ops = &mock_ops,
+};
+
+static void mock_dev_release(struct device *dev)
+{
+ struct mock_dev *mdev = container_of(dev, struct mock_dev, dev);
+
+ kfree(mdev);
+}
+
+static struct mock_dev *mock_dev_create(void)
+{
+ struct iommu_group *iommu_group;
+ struct dev_iommu *dev_iommu;
+ struct mock_dev *mdev;
+ int rc;
+
+ mdev = kzalloc(sizeof(*mdev), GFP_KERNEL);
+ if (!mdev)
+ return ERR_PTR(-ENOMEM);
+
+ device_initialize(&mdev->dev);
+ mdev->dev.release = mock_dev_release;
+ mdev->dev.bus = &iommufd_mock_bus_type;
+
+ iommu_group = iommu_group_alloc();
+ if (IS_ERR(iommu_group)) {
+ rc = PTR_ERR(iommu_group);
+ goto err_put;
+ }
+
+ rc = dev_set_name(&mdev->dev, "iommufd_mock%u",
+ iommu_group_id(iommu_group));
+ if (rc)
+ goto err_group;
+
+ /*
+ * The iommu core has no way to associate a single device with an iommu
+ * driver (heck currently it can't even support two iommu_drivers
+ * registering). Hack it together with an open coded dev_iommu_get().
+ * Notice that the normal notifier triggered iommu release process also
+ * does not work here because this bus is not in iommu_buses.
+ */
+ mdev->dev.iommu = kzalloc(sizeof(*dev_iommu), GFP_KERNEL);
+ if (!mdev->dev.iommu) {
+ rc = -ENOMEM;
+ goto err_group;
+ }
+ mutex_init(&mdev->dev.iommu->lock);
+ mdev->dev.iommu->iommu_dev = &mock_iommu_device;
+
+ rc = device_add(&mdev->dev);
+ if (rc)
+ goto err_dev_iommu;
+
+ rc = iommu_group_add_device(iommu_group, &mdev->dev);
+ if (rc)
+ goto err_del;
+ iommu_group_put(iommu_group);
+ return mdev;
+
+err_del:
+ device_del(&mdev->dev);
+err_dev_iommu:
+ kfree(mdev->dev.iommu);
+ mdev->dev.iommu = NULL;
+err_group:
+ iommu_group_put(iommu_group);
+err_put:
+ put_device(&mdev->dev);
+ return ERR_PTR(rc);
+}
+
+static void mock_dev_destroy(struct mock_dev *mdev)
+{
+ iommu_group_remove_device(&mdev->dev);
+ device_del(&mdev->dev);
+ kfree(mdev->dev.iommu);
+ mdev->dev.iommu = NULL;
+ put_device(&mdev->dev);
+}
+
+bool iommufd_selftest_is_mock_dev(struct device *dev)
+{
+ return dev->release == mock_dev_release;
+}
+
/* Create an hw_pagetable with the mock domain so we can test the domain ops */
static int iommufd_test_mock_domain(struct iommufd_ucmd *ucmd,
struct iommu_test_cmd *cmd)
{
- static struct bus_type mock_bus = { .iommu_ops = &mock_ops };
- struct iommufd_hw_pagetable *hwpt;
+ struct iommufd_device *idev;
struct selftest_obj *sobj;
- struct iommufd_ioas *ioas;
+ u32 pt_id = cmd->id;
+ u32 idev_id;
int rc;
- ioas = iommufd_get_ioas(ucmd, cmd->id);
- if (IS_ERR(ioas))
- return PTR_ERR(ioas);
-
sobj = iommufd_object_alloc(ucmd->ictx, sobj, IOMMUFD_OBJ_SELFTEST);
- if (IS_ERR(sobj)) {
- rc = PTR_ERR(sobj);
- goto out_ioas;
- }
+ if (IS_ERR(sobj))
+ return PTR_ERR(sobj);
+
sobj->idev.ictx = ucmd->ictx;
sobj->type = TYPE_IDEV;
- sobj->idev.mock_dev.bus = &mock_bus;
- hwpt = iommufd_device_selftest_attach(ucmd->ictx, ioas,
- &sobj->idev.mock_dev);
- if (IS_ERR(hwpt)) {
- rc = PTR_ERR(hwpt);
+ sobj->idev.mock_dev = mock_dev_create();
+ if (IS_ERR(sobj->idev.mock_dev)) {
+ rc = PTR_ERR(sobj->idev.mock_dev);
goto out_sobj;
}
- sobj->idev.hwpt = hwpt;
- /* Userspace must destroy both of these IDs to destroy the object */
- cmd->mock_domain.out_hwpt_id = hwpt->obj.id;
- cmd->mock_domain.out_device_id = sobj->obj.id;
+ idev = iommufd_device_bind(ucmd->ictx, &sobj->idev.mock_dev->dev,
+ &idev_id);
+ if (IS_ERR(idev)) {
+ rc = PTR_ERR(idev);
+ goto out_mdev;
+ }
+ sobj->idev.idev = idev;
+
+ rc = iommufd_device_attach(idev, &pt_id);
+ if (rc)
+ goto out_unbind;
+
+ /* Userspace must destroy the device_id to destroy the object */
+ cmd->mock_domain.out_hwpt_id = pt_id;
+ cmd->mock_domain.out_stdev_id = sobj->obj.id;
iommufd_object_finalize(ucmd->ictx, &sobj->obj);
- iommufd_put_object(&ioas->obj);
return iommufd_ucmd_respond(ucmd, sizeof(*cmd));
+out_unbind:
+ iommufd_device_unbind(idev);
+out_mdev:
+ mock_dev_destroy(sobj->idev.mock_dev);
out_sobj:
iommufd_object_abort(ucmd->ictx, &sobj->obj);
-out_ioas:
- iommufd_put_object(&ioas->obj);
return rc;
}
struct iommufd_ioas *ioas;
int rc;
- ioas = iommufd_get_ioas(ucmd, mockpt_id);
+ ioas = iommufd_get_ioas(ucmd->ictx, mockpt_id);
if (IS_ERR(ioas))
return PTR_ERR(ioas);
down_write(&ioas->iopt.iova_rwsem);
{
struct iommufd_hw_pagetable *hwpt;
struct mock_iommu_domain *mock;
+ uintptr_t end;
int rc;
if (iova % MOCK_IO_PAGE_SIZE || length % MOCK_IO_PAGE_SIZE ||
- (uintptr_t)uptr % MOCK_IO_PAGE_SIZE)
+ (uintptr_t)uptr % MOCK_IO_PAGE_SIZE ||
+ check_add_overflow((uintptr_t)uptr, (uintptr_t)length, &end))
return -EINVAL;
hwpt = get_md_pagetable(ucmd, mockpt_id, &mock);
void __user *uptr, size_t length,
unsigned int refs)
{
- if (length % PAGE_SIZE || (uintptr_t)uptr % PAGE_SIZE)
+ uintptr_t end;
+
+ if (length % PAGE_SIZE || (uintptr_t)uptr % PAGE_SIZE ||
+ check_add_overflow((uintptr_t)uptr, (uintptr_t)length, &end))
return -EINVAL;
for (; length; length -= PAGE_SIZE) {
struct iommu_test_cmd *cmd = ucmd->cmd;
struct selftest_access *staccess;
struct iommufd_access *access;
+ u32 id;
int fdno;
int rc;
}
access = iommufd_access_create(
- ucmd->ictx, ioas_id,
+ ucmd->ictx,
(flags & MOCK_FLAGS_ACCESS_CREATE_NEEDS_PIN_PAGES) ?
&selftest_access_ops_pin :
&selftest_access_ops,
- staccess);
+ staccess, &id);
if (IS_ERR(access)) {
rc = PTR_ERR(access);
goto out_put_fdno;
}
+ rc = iommufd_access_attach(access, ioas_id);
+ if (rc)
+ goto out_destroy;
cmd->create_access.out_access_fd = fdno;
rc = iommufd_ucmd_respond(ucmd, sizeof(*cmd));
if (rc)
switch (sobj->type) {
case TYPE_IDEV:
- iommufd_device_selftest_detach(sobj->idev.ictx,
- sobj->idev.hwpt);
+ iommufd_device_detach(sobj->idev.idev);
+ iommufd_device_unbind(sobj->idev.idev);
+ mock_dev_destroy(sobj->idev.mock_dev);
break;
}
}
{
dbgfs_root =
fault_create_debugfs_attr("fail_iommufd", NULL, &fail_iommufd);
+ WARN_ON(bus_register(&iommufd_mock_bus_type));
}
void iommufd_test_exit(void)
{
debugfs_remove_recursive(dbgfs_root);
+ bus_unregister(&iommufd_mock_bus_type);
}
return iommufd_ucmd_respond(ucmd, sizeof(*cmd));
case IOMMU_VFIO_IOAS_SET:
- ioas = iommufd_get_ioas(ucmd, cmd->ioas_id);
+ ioas = iommufd_get_ioas(ucmd->ictx, cmd->ioas_id);
if (IS_ERR(ioas))
return PTR_ERR(ioas);
xa_lock(&ucmd->ictx->objects);
return 0;
}
- /*
- * If the driver doesn't provide this op then it means the device does
- * not do DMA at all. So nothing to do.
- */
- if (!vdev->ops->bind_iommufd)
- return 0;
-
ret = vdev->ops->bind_iommufd(vdev, ictx, &device_id);
if (ret)
return ret;
/*
* The emulated standard ops mean that vfio_device is going to use the
* "mdev path" and will call vfio_pin_pages()/vfio_dma_rw(). Drivers using this
- * ops set should call vfio_register_emulated_iommu_dev().
+ * ops set should call vfio_register_emulated_iommu_dev(). Drivers that do
+ * not call vfio_pin_pages()/vfio_dma_rw() have no need to provide dma_unmap.
*/
static void vfio_emulated_unmap(void *data, unsigned long iova,
{
struct vfio_device *vdev = data;
- vdev->ops->dma_unmap(vdev, iova, length);
+ if (vdev->ops->dma_unmap)
+ vdev->ops->dma_unmap(vdev, iova, length);
}
static const struct iommufd_access_ops vfio_user_ops = {
int vfio_iommufd_emulated_bind(struct vfio_device *vdev,
struct iommufd_ctx *ictx, u32 *out_device_id)
{
+ struct iommufd_access *user;
+
lockdep_assert_held(&vdev->dev_set->lock);
- vdev->iommufd_ictx = ictx;
- iommufd_ctx_get(ictx);
+ user = iommufd_access_create(ictx, &vfio_user_ops, vdev, out_device_id);
+ if (IS_ERR(user))
+ return PTR_ERR(user);
+ vdev->iommufd_access = user;
return 0;
}
EXPORT_SYMBOL_GPL(vfio_iommufd_emulated_bind);
if (vdev->iommufd_access) {
iommufd_access_destroy(vdev->iommufd_access);
+ vdev->iommufd_attached = false;
vdev->iommufd_access = NULL;
}
- iommufd_ctx_put(vdev->iommufd_ictx);
- vdev->iommufd_ictx = NULL;
}
EXPORT_SYMBOL_GPL(vfio_iommufd_emulated_unbind);
int vfio_iommufd_emulated_attach_ioas(struct vfio_device *vdev, u32 *pt_id)
{
- struct iommufd_access *user;
+ int rc;
lockdep_assert_held(&vdev->dev_set->lock);
- user = iommufd_access_create(vdev->iommufd_ictx, *pt_id, &vfio_user_ops,
- vdev);
- if (IS_ERR(user))
- return PTR_ERR(user);
- vdev->iommufd_access = user;
+ if (vdev->iommufd_attached)
+ return -EBUSY;
+ rc = iommufd_access_attach(vdev->iommufd_access, *pt_id);
+ if (rc)
+ return rc;
+ vdev->iommufd_attached = true;
return 0;
}
EXPORT_SYMBOL_GPL(vfio_iommufd_emulated_attach_ioas);
{
int ret;
- if (WARN_ON(device->ops->bind_iommufd &&
- (!device->ops->unbind_iommufd ||
+ if (WARN_ON(IS_ENABLED(CONFIG_IOMMUFD) &&
+ (!device->ops->bind_iommufd ||
+ !device->ops->unbind_iommufd ||
!device->ops->attach_ioas)))
return -EINVAL;
};
struct iommufd_access *
-iommufd_access_create(struct iommufd_ctx *ictx, u32 ioas_id,
- const struct iommufd_access_ops *ops, void *data);
+iommufd_access_create(struct iommufd_ctx *ictx,
+ const struct iommufd_access_ops *ops, void *data, u32 *id);
void iommufd_access_destroy(struct iommufd_access *access);
+int iommufd_access_attach(struct iommufd_access *access, u32 ioas_id);
void iommufd_ctx_get(struct iommufd_ctx *ictx);
void (*put_kvm)(struct kvm *kvm);
#if IS_ENABLED(CONFIG_IOMMUFD)
struct iommufd_device *iommufd_device;
- struct iommufd_ctx *iommufd_ictx;
bool iommufd_attached;
#endif
};
.write = mbochs_write,
.ioctl = mbochs_ioctl,
.mmap = mbochs_mmap,
+ .bind_iommufd = vfio_iommufd_emulated_bind,
+ .unbind_iommufd = vfio_iommufd_emulated_unbind,
+ .attach_ioas = vfio_iommufd_emulated_attach_ioas,
};
static struct mdev_driver mbochs_driver = {
.write = mdpy_write,
.ioctl = mdpy_ioctl,
.mmap = mdpy_mmap,
+ .bind_iommufd = vfio_iommufd_emulated_bind,
+ .unbind_iommufd = vfio_iommufd_emulated_unbind,
+ .attach_ioas = vfio_iommufd_emulated_attach_ioas,
};
static struct mdev_driver mdpy_driver = {
.read = mtty_read,
.write = mtty_write,
.ioctl = mtty_ioctl,
+ .bind_iommufd = vfio_iommufd_emulated_bind,
+ .unbind_iommufd = vfio_iommufd_emulated_unbind,
+ .attach_ioas = vfio_iommufd_emulated_attach_ioas,
};
static struct mdev_driver mtty_driver = {
{
int fd;
uint32_t ioas_id;
- uint32_t domain_id;
+ uint32_t stdev_id;
+ uint32_t hwpt_id;
uint64_t base_iova;
};
}
for (i = 0; i != variant->mock_domains; i++) {
- test_cmd_mock_domain(self->ioas_id, NULL, &self->domain_id);
+ test_cmd_mock_domain(self->ioas_id, &self->stdev_id,
+ &self->hwpt_id);
self->base_iova = MOCK_APERTURE_START;
}
}
TEST_F(iommufd_ioas, ioas_destroy)
{
- if (self->domain_id) {
- /* IOAS cannot be freed while a domain is on it */
+ if (self->stdev_id) {
+ /* IOAS cannot be freed while a device has a HWPT using it */
EXPECT_ERRNO(EBUSY,
_test_ioctl_destroy(self->fd, self->ioas_id));
} else {
}
}
+TEST_F(iommufd_ioas, hwpt_attach)
+{
+ /* Create a device attached directly to a hwpt */
+ if (self->stdev_id) {
+ test_cmd_mock_domain(self->hwpt_id, NULL, NULL);
+ } else {
+ test_err_mock_domain(ENOENT, self->hwpt_id, NULL, NULL);
+ }
+}
+
TEST_F(iommufd_ioas, ioas_area_destroy)
{
/* Adding an area does not change ability to destroy */
test_ioctl_ioas_map_fixed(buffer, PAGE_SIZE, self->base_iova);
- if (self->domain_id)
+ if (self->stdev_id)
EXPECT_ERRNO(EBUSY,
_test_ioctl_destroy(self->fd, self->ioas_id));
else
for (i = 0; i != 10; i++) {
size_t length = PAGE_SIZE * (i + 1);
- if (self->domain_id) {
+ if (self->stdev_id) {
test_ioctl_ioas_map(buffer, length, &iovas[i]);
} else {
test_ioctl_ioas_map((void *)(1UL << 31), length,
ioctl(self->fd, IOMMU_IOAS_ALLOW_IOVAS, &allow_cmd));
/* Allocate from an allowed region */
- if (self->domain_id) {
+ if (self->stdev_id) {
ranges[0].start = MOCK_APERTURE_START + PAGE_SIZE;
ranges[0].last = MOCK_APERTURE_START + PAGE_SIZE * 600 - 1;
} else {
/* Range can be read */
ASSERT_EQ(0, ioctl(self->fd, IOMMU_IOAS_IOVA_RANGES, &ranges_cmd));
EXPECT_EQ(1, ranges_cmd.num_iovas);
- if (!self->domain_id) {
+ if (!self->stdev_id) {
EXPECT_EQ(0, ranges[0].start);
EXPECT_EQ(SIZE_MAX, ranges[0].last);
EXPECT_EQ(1, ranges_cmd.out_iova_alignment);
&test_cmd));
ranges_cmd.num_iovas = BUFFER_SIZE / sizeof(*ranges);
ASSERT_EQ(0, ioctl(self->fd, IOMMU_IOAS_IOVA_RANGES, &ranges_cmd));
- if (!self->domain_id) {
+ if (!self->stdev_id) {
EXPECT_EQ(2, ranges_cmd.num_iovas);
EXPECT_EQ(0, ranges[0].start);
EXPECT_EQ(PAGE_SIZE - 1, ranges[0].last);
/* Buffer too small */
memset(ranges, 0, BUFFER_SIZE);
ranges_cmd.num_iovas = 1;
- if (!self->domain_id) {
+ if (!self->stdev_id) {
EXPECT_ERRNO(EMSGSIZE, ioctl(self->fd, IOMMU_IOAS_IOVA_RANGES,
&ranges_cmd));
EXPECT_EQ(2, ranges_cmd.num_iovas);
EXPECT_EQ(0, ranges[1].last);
}
+TEST_F(iommufd_ioas, access_domain_destory)
+{
+ struct iommu_test_cmd access_cmd = {
+ .size = sizeof(access_cmd),
+ .op = IOMMU_TEST_OP_ACCESS_PAGES,
+ .access_pages = { .iova = self->base_iova + PAGE_SIZE,
+ .length = PAGE_SIZE},
+ };
+ size_t buf_size = 2 * HUGEPAGE_SIZE;
+ uint8_t *buf;
+
+ buf = mmap(0, buf_size, PROT_READ | PROT_WRITE,
+ MAP_SHARED | MAP_ANONYMOUS | MAP_HUGETLB | MAP_POPULATE, -1,
+ 0);
+ ASSERT_NE(MAP_FAILED, buf);
+ test_ioctl_ioas_map_fixed(buf, buf_size, self->base_iova);
+
+ test_cmd_create_access(self->ioas_id, &access_cmd.id,
+ MOCK_FLAGS_ACCESS_CREATE_NEEDS_PIN_PAGES);
+ access_cmd.access_pages.uptr = (uintptr_t)buf + PAGE_SIZE;
+ ASSERT_EQ(0,
+ ioctl(self->fd, _IOMMU_TEST_CMD(IOMMU_TEST_OP_ACCESS_PAGES),
+ &access_cmd));
+
+ /* Causes a complicated unpin across a huge page boundary */
+ if (self->stdev_id)
+ test_ioctl_destroy(self->stdev_id);
+
+ test_cmd_destroy_access_pages(
+ access_cmd.id, access_cmd.access_pages.out_access_pages_id);
+ test_cmd_destroy_access(access_cmd.id);
+ ASSERT_EQ(0, munmap(buf, buf_size));
+}
+
TEST_F(iommufd_ioas, access_pin)
{
struct iommu_test_cmd access_cmd = {
MOCK_FLAGS_ACCESS_CREATE_NEEDS_PIN_PAGES);
for (npages = 1; npages < BUFFER_SIZE / PAGE_SIZE; npages++) {
- uint32_t mock_device_id;
+ uint32_t mock_stdev_id;
uint32_t mock_hwpt_id;
access_cmd.access_pages.length = npages * PAGE_SIZE;
ASSERT_EQ(0, ioctl(self->fd,
_IOMMU_TEST_CMD(IOMMU_TEST_OP_ACCESS_PAGES),
&access_cmd));
- test_cmd_mock_domain(self->ioas_id, &mock_device_id,
+ test_cmd_mock_domain(self->ioas_id, &mock_stdev_id,
&mock_hwpt_id);
check_map_cmd.id = mock_hwpt_id;
ASSERT_EQ(0, ioctl(self->fd,
_IOMMU_TEST_CMD(IOMMU_TEST_OP_MD_CHECK_MAP),
&check_map_cmd));
- test_ioctl_destroy(mock_device_id);
- test_ioctl_destroy(mock_hwpt_id);
+ test_ioctl_destroy(mock_stdev_id);
test_cmd_destroy_access_pages(
access_cmd.id,
access_cmd.access_pages.out_access_pages_id);
ASSERT_NE(-1, child);
ASSERT_EQ(child, waitpid(child, NULL, 0));
- if (self->domain_id) {
+ if (self->stdev_id) {
/*
* If a domain already existed then everything was pinned within
* the fork, so this copies from one domain to another.
{
int fd;
uint32_t ioas_id;
- uint32_t domain_id;
- uint32_t domain_ids[2];
+ uint32_t hwpt_id;
+ uint32_t hwpt_ids[2];
int mmap_flags;
size_t mmap_buf_size;
};
ASSERT_NE(-1, self->fd);
test_ioctl_ioas_alloc(&self->ioas_id);
- ASSERT_GE(ARRAY_SIZE(self->domain_ids), variant->mock_domains);
+ ASSERT_GE(ARRAY_SIZE(self->hwpt_ids), variant->mock_domains);
for (i = 0; i != variant->mock_domains; i++)
- test_cmd_mock_domain(self->ioas_id, NULL, &self->domain_ids[i]);
- self->domain_id = self->domain_ids[0];
+ test_cmd_mock_domain(self->ioas_id, NULL, &self->hwpt_ids[i]);
+ self->hwpt_id = self->hwpt_ids[0];
self->mmap_flags = MAP_SHARED | MAP_ANONYMOUS;
self->mmap_buf_size = PAGE_SIZE * 8;
struct iommu_test_cmd check_map_cmd = { \
.size = sizeof(check_map_cmd), \
.op = IOMMU_TEST_OP_MD_CHECK_MAP, \
- .id = self->domain_id, \
+ .id = self->hwpt_id, \
.check_map = { .iova = _iova, \
.length = _length, \
.uptr = (uintptr_t)(_ptr) }, \
ioctl(self->fd, \
_IOMMU_TEST_CMD(IOMMU_TEST_OP_MD_CHECK_MAP), \
&check_map_cmd)); \
- if (self->domain_ids[1]) { \
- check_map_cmd.id = self->domain_ids[1]; \
+ if (self->hwpt_ids[1]) { \
+ check_map_cmd.id = self->hwpt_ids[1]; \
ASSERT_EQ(0, \
ioctl(self->fd, \
_IOMMU_TEST_CMD( \
for (; end < buf_size; end += MOCK_PAGE_SIZE) {
size_t length = end - start;
unsigned int old_id;
- uint32_t mock_device_id;
+ uint32_t mock_stdev_id;
__u64 iova;
test_ioctl_ioas_map(buf + start, length, &iova);
/* Add and destroy a domain while the area exists */
- old_id = self->domain_ids[1];
- test_cmd_mock_domain(self->ioas_id, &mock_device_id,
- &self->domain_ids[1]);
+ old_id = self->hwpt_ids[1];
+ test_cmd_mock_domain(self->ioas_id, &mock_stdev_id,
+ &self->hwpt_ids[1]);
check_mock_iova(buf + start, iova, length);
check_refs(buf + start / PAGE_SIZE * PAGE_SIZE,
start / PAGE_SIZE * PAGE_SIZE,
1);
- test_ioctl_destroy(mock_device_id);
- test_ioctl_destroy(self->domain_ids[1]);
- self->domain_ids[1] = old_id;
+ test_ioctl_destroy(mock_stdev_id);
+ self->hwpt_ids[1] = old_id;
test_ioctl_ioas_unmap(iova, length);
}
TEST_FAIL_NTH(basic_fail_nth, map_domain)
{
uint32_t ioas_id;
- __u32 device_id;
+ __u32 stdev_id;
__u32 hwpt_id;
__u64 iova;
fail_nth_enable();
- if (_test_cmd_mock_domain(self->fd, ioas_id, &device_id, &hwpt_id))
+ if (_test_cmd_mock_domain(self->fd, ioas_id, &stdev_id, &hwpt_id))
return -1;
if (_test_ioctl_ioas_map(self->fd, ioas_id, buffer, 262144, &iova,
IOMMU_IOAS_MAP_READABLE))
return -1;
- if (_test_ioctl_destroy(self->fd, device_id))
- return -1;
- if (_test_ioctl_destroy(self->fd, hwpt_id))
+ if (_test_ioctl_destroy(self->fd, stdev_id))
return -1;
- if (_test_cmd_mock_domain(self->fd, ioas_id, &device_id, &hwpt_id))
+ if (_test_cmd_mock_domain(self->fd, ioas_id, &stdev_id, &hwpt_id))
return -1;
return 0;
}
TEST_FAIL_NTH(basic_fail_nth, map_two_domains)
{
uint32_t ioas_id;
- __u32 device_id2;
- __u32 device_id;
+ __u32 stdev_id2;
+ __u32 stdev_id;
__u32 hwpt_id2;
__u32 hwpt_id;
__u64 iova;
if (_test_ioctl_set_temp_memory_limit(self->fd, 32))
return -1;
- if (_test_cmd_mock_domain(self->fd, ioas_id, &device_id, &hwpt_id))
+ if (_test_cmd_mock_domain(self->fd, ioas_id, &stdev_id, &hwpt_id))
return -1;
fail_nth_enable();
- if (_test_cmd_mock_domain(self->fd, ioas_id, &device_id2, &hwpt_id2))
+ if (_test_cmd_mock_domain(self->fd, ioas_id, &stdev_id2, &hwpt_id2))
return -1;
if (_test_ioctl_ioas_map(self->fd, ioas_id, buffer, 262144, &iova,
IOMMU_IOAS_MAP_READABLE))
return -1;
- if (_test_ioctl_destroy(self->fd, device_id))
- return -1;
- if (_test_ioctl_destroy(self->fd, hwpt_id))
+ if (_test_ioctl_destroy(self->fd, stdev_id))
return -1;
- if (_test_ioctl_destroy(self->fd, device_id2))
- return -1;
- if (_test_ioctl_destroy(self->fd, hwpt_id2))
+ if (_test_ioctl_destroy(self->fd, stdev_id2))
return -1;
- if (_test_cmd_mock_domain(self->fd, ioas_id, &device_id, &hwpt_id))
+ if (_test_cmd_mock_domain(self->fd, ioas_id, &stdev_id, &hwpt_id))
return -1;
- if (_test_cmd_mock_domain(self->fd, ioas_id, &device_id2, &hwpt_id2))
+ if (_test_cmd_mock_domain(self->fd, ioas_id, &stdev_id2, &hwpt_id2))
return -1;
return 0;
}
{
uint32_t access_pages_id;
uint32_t ioas_id;
- __u32 device_id;
+ __u32 stdev_id;
__u32 hwpt_id;
__u64 iova;
if (_test_ioctl_set_temp_memory_limit(self->fd, 32))
return -1;
- if (_test_cmd_mock_domain(self->fd, ioas_id, &device_id, &hwpt_id))
+ if (_test_cmd_mock_domain(self->fd, ioas_id, &stdev_id, &hwpt_id))
return -1;
if (_test_ioctl_ioas_map(self->fd, ioas_id, buffer, BUFFER_SIZE, &iova,
return -1;
self->access_id = 0;
- if (_test_ioctl_destroy(self->fd, device_id))
- return -1;
- if (_test_ioctl_destroy(self->fd, hwpt_id))
+ if (_test_ioctl_destroy(self->fd, stdev_id))
return -1;
return 0;
}
&test_cmd)); \
})
-static int _test_cmd_mock_domain(int fd, unsigned int ioas_id, __u32 *device_id,
+static int _test_cmd_mock_domain(int fd, unsigned int ioas_id, __u32 *stdev_id,
__u32 *hwpt_id)
{
struct iommu_test_cmd cmd = {
ret = ioctl(fd, IOMMU_TEST_CMD, &cmd);
if (ret)
return ret;
- if (device_id)
- *device_id = cmd.mock_domain.out_device_id;
+ if (stdev_id)
+ *stdev_id = cmd.mock_domain.out_stdev_id;
assert(cmd.id != 0);
if (hwpt_id)
*hwpt_id = cmd.mock_domain.out_hwpt_id;
return 0;
}
-#define test_cmd_mock_domain(ioas_id, device_id, hwpt_id) \
- ASSERT_EQ(0, _test_cmd_mock_domain(self->fd, ioas_id, device_id, \
- hwpt_id))
-#define test_err_mock_domain(_errno, ioas_id, device_id, hwpt_id) \
+#define test_cmd_mock_domain(ioas_id, stdev_id, hwpt_id) \
+ ASSERT_EQ(0, \
+ _test_cmd_mock_domain(self->fd, ioas_id, stdev_id, hwpt_id))
+#define test_err_mock_domain(_errno, ioas_id, stdev_id, hwpt_id) \
EXPECT_ERRNO(_errno, _test_cmd_mock_domain(self->fd, ioas_id, \
- device_id, hwpt_id))
+ stdev_id, hwpt_id))
static int _test_cmd_create_access(int fd, unsigned int ioas_id,
__u32 *access_id, unsigned int flags)
projects / linux-block.git / commitdiff