diff mbox series

[v7,5/9] iommufd: Add helper to retrieve iommufd_ctx and devid

Message ID 20230602121515.79374-6-yi.l.liu@intel.com (mailing list archive)
State New, archived
Headers show
Series Enhance vfio PCI hot reset for vfio cdev device | expand

Commit Message

Yi Liu June 2, 2023, 12:15 p.m. UTC 
This is needed by the vfio-pci driver to report affected devices in the
hot-reset for a given device.

Tested-by: Terrence Xu <terrence.xu@intel.com>
Signed-off-by: Yi Liu <yi.l.liu@intel.com>
---
 drivers/iommu/iommufd/device.c | 12 ++++++++++++
 include/linux/iommufd.h        |  3 +++
 2 files changed, 15 insertions(+)

Comments

Jason Gunthorpe June 13, 2023, 11:47 a.m. UTC | #1 
On Fri, Jun 02, 2023 at 05:15:11AM -0700, Yi Liu wrote:
> This is needed by the vfio-pci driver to report affected devices in the
> hot-reset for a given device.
> 
> Tested-by: Terrence Xu <terrence.xu@intel.com>
> Signed-off-by: Yi Liu <yi.l.liu@intel.com>
> ---
>  drivers/iommu/iommufd/device.c | 12 ++++++++++++
>  include/linux/iommufd.h        |  3 +++
>  2 files changed, 15 insertions(+)

Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>

Jason
diff mbox series

Patch

diff --git a/drivers/iommu/iommufd/device.c b/drivers/iommu/iommufd/device.c
index 4571344c8508..96d4281bfa7c 100644
--- a/drivers/iommu/iommufd/device.c
+++ b/drivers/iommu/iommufd/device.c
@@ -146,6 +146,18 @@  void iommufd_device_unbind(struct iommufd_device *idev)
 }
 EXPORT_SYMBOL_NS_GPL(iommufd_device_unbind, IOMMUFD);
 
+struct iommufd_ctx *iommufd_device_to_ictx(struct iommufd_device *idev)
+{
+	return idev->ictx;
+}
+EXPORT_SYMBOL_NS_GPL(iommufd_device_to_ictx, IOMMUFD);
+
+u32 iommufd_device_to_id(struct iommufd_device *idev)
+{
+	return idev->obj.id;
+}
+EXPORT_SYMBOL_NS_GPL(iommufd_device_to_id, IOMMUFD);
+
 static int iommufd_device_setup_msi(struct iommufd_device *idev,
 				    struct iommufd_hw_pagetable *hwpt,
 				    phys_addr_t sw_msi_start)
diff --git a/include/linux/iommufd.h b/include/linux/iommufd.h
index 33fe57e95e42..33933b0f95fc 100644
--- a/include/linux/iommufd.h
+++ b/include/linux/iommufd.h
@@ -25,6 +25,9 @@  void iommufd_device_unbind(struct iommufd_device *idev);
 int iommufd_device_attach(struct iommufd_device *idev, u32 *pt_id);
 void iommufd_device_detach(struct iommufd_device *idev);
 
+struct iommufd_ctx *iommufd_device_to_ictx(struct iommufd_device *idev);
+u32 iommufd_device_to_id(struct iommufd_device *idev);
+
 struct iommufd_access_ops {
 	u8 needs_pin_pages : 1;
 	void (*unmap)(void *data, unsigned long iova, unsigned long length);