1 /* SPDX-License-Identifier: GPL-2.0-only */
3  * Copyright (C) 2007-2008 Advanced Micro Devices, Inc.
36  * the last-level or system cache, with a read/write allocation policy.
42  * the last-level or system cache, with a read allocation policy.
72 #define __IOMMU_DOMAIN_DMA_API	(1U << 1)  /* Domain for use in DMA-API
77  * This are the possible domain-types
79  *	IOMMU_DOMAIN_BLOCKED	- All DMA is blocked, can be used to isolate
81  *	IOMMU_DOMAIN_IDENTITY	- DMA addresses are system physical addresses
82  *	IOMMU_DOMAIN_UNMANAGED	- DMA mappings managed by IOMMU-API user, used
84  *	IOMMU_DOMAIN_DMA	- Internally used for DMA-API implementations.
113  *  -aperture must be power of 2, and naturally aligned
114  *  -number of windows must be power of 2, and address space size
116  *  -the actual size of the mapped region of a window must be power
150 	/* Software-managed MSI translation window */
155  * struct iommu_resv_region - descriptor for a reserved memory region
172 	IOMMU_DEV_FEAT_AUX,	/* Aux-domain feature */
176 #define IOMMU_PASID_INVALID	(-1U)
181  * struct iommu_iotlb_gather - Range information for a pending IOTLB flush
188  * ->unmap() function in struct iommu_ops before eventually being passed
189  * into ->iotlb_sync().
198  * struct iommu_ops - iommu ops and capabilities
207  * @map_sg: map a scatter-gather list of physically contiguous chunks to
225  * @apply_resv_region: Temporary helper call-back for iova reserved ranges
234  * @aux_attach/detach_dev: aux-domain specific attach/detach entries.
235  * @aux_get_pasid: get the pasid given an aux-domain
244  *		- IOMMU_DOMAIN_IDENTITY: must use an identity domain
245  *		- IOMMU_DOMAIN_DMA: must use a dma domain
246  *		- 0: use the default setting
265 		      struct scatterlist *sg, unsigned int nents, int prot,
308 	/* Aux-domain specific attach/detach entries */
335  * struct iommu_device - IOMMU core representation of one IOMMU hardware
337  * @list: Used by the iommu-core to keep a list of registered iommus
338  * @ops: iommu-ops for talking to this iommu
349  * struct iommu_fault_event - Generic fault event
363  * struct iommu_fault_param - per-device IOMMU fault data
377  * struct dev_iommu - Collection of per-device IOMMU data
408 	iommu->ops = ops;  in __iommu_device_set_ops()
414 	__ops->owner = THIS_MODULE;					\
421 	iommu->fwnode = fwnode;  in iommu_device_set_fwnode()
476 			   struct scatterlist *sg,unsigned int nents, int prot);
478 				  unsigned long iova, struct scatterlist *sg,
549 	if (domain->ops->flush_iotlb_all)  in iommu_flush_iotlb_all()
550 		domain->ops->flush_iotlb_all(domain);  in iommu_flush_iotlb_all()
556 	if (domain->ops->iotlb_sync)  in iommu_iotlb_sync()
557 		domain->ops->iotlb_sync(domain, iotlb_gather);  in iommu_iotlb_sync()
566 	unsigned long start = iova, end = start + size - 1;  in iommu_iotlb_gather_add_page()
573 	if (gather->pgsize != size ||  in iommu_iotlb_gather_add_page()
574 	    end + 1 < gather->start || start > gather->end + 1) {  in iommu_iotlb_gather_add_page()
575 		if (gather->pgsize)  in iommu_iotlb_gather_add_page()
577 		gather->pgsize = size;  in iommu_iotlb_gather_add_page()
580 	if (gather->end < end)  in iommu_iotlb_gather_add_page()
581 		gather->end = end;  in iommu_iotlb_gather_add_page()
583 	if (gather->start > start)  in iommu_iotlb_gather_add_page()
584 		gather->start = start;  in iommu_iotlb_gather_add_page()
591 /* FSL-MC device grouping function */
595  * struct iommu_fwspec - per-device IOMMU instance data
616  * struct iommu_sva - handle to a device-mm bond
630 	if (dev->iommu)  in dev_iommu_fwspec_get()
631 		return dev->iommu->fwspec;  in dev_iommu_fwspec_get()
639 	dev->iommu->fwspec = fwspec;  in dev_iommu_fwspec_set()
644 	if (dev->iommu)  in dev_iommu_priv_get()
645 		return dev->iommu->priv;  in dev_iommu_priv_get()
652 	dev->iommu->priv = priv;  in dev_iommu_priv_set()
708 	return -ENODEV;  in iommu_attach_device()
724 	return -ENODEV;  in iommu_map()
731 	return -ENODEV;  in iommu_map_atomic()
748 				  unsigned long iova, struct scatterlist *sg,  in iommu_map_sg()  argument
755 				  unsigned long iova, struct scatterlist *sg,  in iommu_map_sg_atomic()  argument
774 	return -ENODEV;  in iommu_domain_window_enable()
805 	return -ENODEV;  in iommu_get_group_resv_regions()
824 	return -ENODEV;  in iommu_attach_group()
834 	return ERR_PTR(-ENODEV);  in iommu_group_alloc()
851 	return -ENODEV;  in iommu_group_set_name()
857 	return -ENODEV;  in iommu_group_add_device()
868 	return -ENODEV;  in iommu_group_for_each_dev()
883 	return -ENODEV;  in iommu_group_register_notifier()
897 	return -ENODEV;  in iommu_register_device_fault_handler()
908 	return -ENODEV;  in iommu_report_device_fault()
914 	return -ENODEV;  in iommu_page_response()
919 	return -ENODEV;  in iommu_group_id()
925 	return -EINVAL;  in iommu_domain_get_attr()
931 	return -EINVAL;  in iommu_domain_set_attr()
936 	return -ENODEV;  in iommu_device_register()
973 	return -ENODEV;  in iommu_device_sysfs_add()
982 	return -EINVAL;  in iommu_device_link()
993 	return -ENODEV;  in iommu_fwspec_init()
1003 	return -ENODEV;  in iommu_fwspec_add_ids()
1027 	return -ENODEV;  in iommu_dev_enable_feature()
1033 	return -ENODEV;  in iommu_dev_disable_feature()
1039 	return -ENODEV;  in iommu_aux_attach_device()
1050 	return -ENODEV;  in iommu_aux_get_pasid()
1073 	return -ENODEV;  in iommu_uapi_cache_invalidate()
1079 	return -ENODEV;  in iommu_uapi_sva_bind_gpasid()
1085 	return -ENODEV;  in iommu_uapi_sva_unbind_gpasid()
1092 	return -ENODEV;  in iommu_sva_unbind_gpasid()
1102  * iommu_map_sgtable - Map the given buffer to the IOMMU domain
1114 	return iommu_map_sg(domain, iova, sgt->sgl, sgt->orig_nents, prot);  in iommu_map_sgtable()