diff options
Diffstat (limited to 'include/linux/pci-tsm.h')
| -rw-r--r-- | include/linux/pci-tsm.h | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/include/linux/pci-tsm.h b/include/linux/pci-tsm.h index d7b078d5e272..a5e297677917 100644 --- a/include/linux/pci-tsm.h +++ b/include/linux/pci-tsm.h @@ -6,6 +6,8 @@ struct pci_tsm; struct tsm_dev; +struct kvm; +enum pci_tsm_req_scope; /* * struct pci_tsm_ops - manage confidential links and security state @@ -29,12 +31,16 @@ struct pci_tsm_ops { * @connect: establish / validate a secure connection (e.g. IDE) * with the device * @disconnect: teardown the secure link + * @bind: bind a TDI in preparation for it to be accepted by a TVM + * @unbind: remove a TDI from secure operation with a TVM * * Context: @probe, @remove, @connect, and @disconnect run under * pci_tsm_rwsem held for write to sync with TSM unregistration and * mutual exclusion of @connect and @disconnect. @connect and * @disconnect additionally run under the DSM lock (struct * pci_tsm_pf0::lock) as well as @probe and @remove of the subfunctions. + * @bind and @unbind run under pci_tsm_rwsem held for read and the DSM + * lock. */ struct_group_tagged(pci_tsm_link_ops, link_ops, struct pci_tsm *(*probe)(struct tsm_dev *tsm_dev, @@ -42,6 +48,9 @@ struct pci_tsm_ops { void (*remove)(struct pci_tsm *tsm); int (*connect)(struct pci_dev *pdev); void (*disconnect)(struct pci_dev *pdev); + struct pci_tdi *(*bind)(struct pci_dev *pdev, + struct kvm *kvm, u32 tdi_id); + void (*unbind)(struct pci_tdi *tdi); ); /* @@ -62,11 +71,24 @@ struct pci_tsm_ops { }; /** + * struct pci_tdi - Core TEE I/O Device Interface (TDI) context + * @pdev: host side representation of guest-side TDI + * @kvm: TEE VM context of bound TDI + * @tdi_id: Identifier (virtual BDF) for the TDI as referenced by the TSM and DSM + */ +struct pci_tdi { + struct pci_dev *pdev; + struct kvm *kvm; + u32 tdi_id; +}; + +/** * struct pci_tsm - Core TSM context for a given PCIe endpoint * @pdev: Back ref to device function, distinguishes type of pci_tsm context * @dsm_dev: PCI Device Security Manager for link operations on @pdev * @tsm_dev: PCI TEE Security Manager device for Link Confidentiality or Device * Function Security operations + * @tdi: TDI context established by the @bind link operation * * This structure is wrapped by low level TSM driver data and returned by * probe()/lock(), it is freed by the corresponding remove()/unlock(). @@ -82,6 +104,7 @@ struct pci_tsm { struct pci_dev *pdev; struct pci_dev *dsm_dev; struct tsm_dev *tsm_dev; + struct pci_tdi *tdi; }; /** @@ -139,6 +162,10 @@ int pci_tsm_pf0_constructor(struct pci_dev *pdev, struct pci_tsm_pf0 *tsm, void pci_tsm_pf0_destructor(struct pci_tsm_pf0 *tsm); int pci_tsm_doe_transfer(struct pci_dev *pdev, u8 type, const void *req, size_t req_sz, void *resp, size_t resp_sz); +int pci_tsm_bind(struct pci_dev *pdev, struct kvm *kvm, u32 tdi_id); +void pci_tsm_unbind(struct pci_dev *pdev); +void pci_tsm_tdi_constructor(struct pci_dev *pdev, struct pci_tdi *tdi, + struct kvm *kvm, u32 tdi_id); #else static inline int pci_tsm_register(struct tsm_dev *tsm_dev) { @@ -147,5 +174,12 @@ static inline int pci_tsm_register(struct tsm_dev *tsm_dev) static inline void pci_tsm_unregister(struct tsm_dev *tsm_dev) { } +static inline int pci_tsm_bind(struct pci_dev *pdev, struct kvm *kvm, u64 tdi_id) +{ + return -ENXIO; +} +static inline void pci_tsm_unbind(struct pci_dev *pdev) +{ +} #endif #endif /*__PCI_TSM_H */ |