diff options
| author | Jason Gunthorpe <jgg@nvidia.com> | 2022-11-29 16:29:36 -0400 |
|---|---|---|
| committer | Jason Gunthorpe <jgg@nvidia.com> | 2022-11-30 20:16:49 -0400 |
| commit | e8d57210035b6377d424ba964961892d01127cf6 (patch) | |
| tree | 08586306dfbb986205ba5097ba3c02fd95650d16 /include/linux/iommufd.h | |
| parent | ea4acfac57b9dee57a7d5840359a41cc3251de92 (diff) | |
iommufd: Add kAPI toward external drivers for physical devices
Add the four functions external drivers need to connect physical DMA to
the IOMMUFD:
iommufd_device_bind() / iommufd_device_unbind()
Register the device with iommufd and establish security isolation.
iommufd_device_attach() / iommufd_device_detach()
Connect a bound device to a page table
Binding a device creates a device object ID in the uAPI, however the
generic API does not yet provide any IOCTLs to manipulate them.
Link: https://lore.kernel.org/r/13-v6-a196d26f289e+11787-iommufd_jgg@nvidia.com
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Tested-by: Nicolin Chen <nicolinc@nvidia.com>
Tested-by: Yi Liu <yi.l.liu@intel.com>
Tested-by: Lixiao Yang <lixiao.yang@intel.com>
Tested-by: Matthew Rosato <mjrosato@linux.ibm.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Diffstat (limited to 'include/linux/iommufd.h')
| -rw-r--r-- | include/linux/iommufd.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/include/linux/iommufd.h b/include/linux/iommufd.h index 26e09d539737..185dff3eb32f 100644 --- a/include/linux/iommufd.h +++ b/include/linux/iommufd.h @@ -9,10 +9,19 @@ #include <linux/types.h> #include <linux/errno.h> #include <linux/err.h> +#include <linux/device.h> +struct iommufd_device; struct iommufd_ctx; struct file; +struct iommufd_device *iommufd_device_bind(struct iommufd_ctx *ictx, + struct device *dev, u32 *id); +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); + enum { IOMMUFD_ACCESS_RW_READ = 0, IOMMUFD_ACCESS_RW_WRITE = 1 << 0, |