From: Yi Liu Date: Tue, 18 Jul 2023 10:55:37 +0000 (-0700) Subject: iommufd: Add helper to retrieve iommufd_ctx and devid X-Git-Tag: v6.6-rc1~121^2~48 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=78d3df457ae5eb53ef1f295a8a704691abea1b1d;p=thirdparty%2Fkernel%2Flinux.git iommufd: Add helper to retrieve iommufd_ctx and devid This is needed by the vfio-pci driver to report affected devices in the hot-reset for a given device. Reviewed-by: Jason Gunthorpe Tested-by: Yanting Jiang Tested-by: Terrence Xu Tested-by: Zhenzhong Duan Signed-off-by: Yi Liu Link: https://lore.kernel.org/r/20230718105542.4138-6-yi.l.liu@intel.com Signed-off-by: Alex Williamson --- diff --git a/drivers/iommu/iommufd/device.c b/drivers/iommu/iommufd/device.c index 693c2155a5daa..cd5d8ab907f92 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 f241bafa03dac..68defed9ea48b 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);