include/linux/amd-iommu.h

1 /* SPDX-License-Identifier: GPL-2.0-only */
3  * Copyright (C) 2007-2010 Advanced Micro Devices, Inc.
14  * This is mainly used to communicate information back-and-forth
36  * amd_iommu_enable_device_erratum() - Enable erratum workaround for device
39  * @erratum: The erratum workaround to enable
41  * The function needs to be called before amd_iommu_init_device().
43  * - AMD_PRI_DEV_ERRATUM_ENABLE_RESET - Reset PRI capability when PRI
45  * - AMD_PRI_DEV_ERRATUM_LIMIT_REQ_ONE - Limit number of outstanding PRI
46  *					 requests to one
54  * amd_iommu_init_device() - Init device for use with IOMMUv2 driver
55  * @pdev: The PCI device to initialize
56  * @pasids: Number of PASIDs to support for this device
65  * amd_iommu_free_device() - Free all IOMMUv2 related device resources
67  * @pdev: The PCI device to disable IOMMUv2 usage for'
72  * amd_iommu_bind_pasid() - Bind a given task to a PASID on a device
73  * @pdev: The PCI device to bind the task to
74  * @pasid: The PASID on the device the task should be bound to
75  * @task: the task to bind
83  * amd_iommu_unbind_pasid() - Unbind a PASID from its task on
86  * @pasid: The PASID to unbind
89  * and the PASID is no longer bound to its task.
94  * amd_iommu_set_invalid_ppr_cb() - Register a call-back for failed
96  * @pdev: The PCI device the call-back should be registered for
97  * @cb: The call-back function
99  * The IOMMUv2 driver invokes this call-back when it is unable to
102  * the call-back are:
104  * - AMD_IOMMU_INV_PRI_RSP_SUCCESS - Send SUCCESS back to the device
105  * - AMD_IOMMU_INV_PRI_RSP_INVALID - Send INVALID back to the device
106  * - AMD_IOMMU_INV_PRI_RSP_FAIL    - Send Failure back to the device,
107  *				     the device is required to disable
132  * amd_iommu_device_info() - Get information about IOMMUv2 support of a
134  * @pdev: PCI device to query information from
135  * @info: A pointer to an amd_iommu_device_info structure which will contain
147 						    super-user privileges */
158  * amd_iommu_set_invalidate_ctx_cb() - Register a call-back for invalidating
159  *				       a pasid context. This call-back is
160  *				       invoked when the IOMMUv2 driver needs to
162  *				       because the task that is bound to that
163  *				       context is about to exit.
165  * @pdev: The PCI device the call-back should be registered for
166  * @cb: The call-back function
175 static inline int amd_iommu_detect(void) { return -ENODEV; }  in amd_iommu_detect()