include/linux/io-pgtable.h

1 /* SPDX-License-Identifier: GPL-2.0 */
22  * struct iommu_flush_ops - IOMMU callbacks for TLB and page table management.
24  * @tlb_flush_all:  Synchronously invalidate the entire TLB context.
25  * @tlb_flush_walk: Synchronously invalidate all intermediate TLB state
28  * @tlb_add_page:   Optional callback to queue up leaf TLB invalidation for a
29  *                  single page.  IOMMUs that cannot batch TLB invalidation
46  * struct io_pgtable_cfg - Configuration data for a set of page tables.
49  *                 action by the low-level page table allocator.
56  * @tlb:           TLB management callbacks for this set of tables.
64 	 *	even in	non-secure state where they should normally be ignored.
69 	 *	format, and/or requires some format-specific default value.
80 	 *	for use in the upper half of a split address space.
92 	const struct iommu_flush_ops	*tlb;  member
95 	/* Low-level data specific to the table format */
138  * struct io_pgtable_ops - Page table manipulation API for IOMMU drivers.
142  * @map_sg:       Map a scatter-gather list of physically contiguous memory
171  * alloc_io_pgtable_ops() - Allocate a page table allocator for use by an IOMMU.
178  *          the callback routines in cfg->tlb.
185  * free_io_pgtable_ops() - Free an io_pgtable_ops structure. The caller
187  *                         live, but the TLB can be dirty.
199  * struct io_pgtable - Internal structure describing a set of page tables.
218 	if (iop->cfg.tlb && iop->cfg.tlb->tlb_flush_all)  in io_pgtable_tlb_flush_all()
219 		iop->cfg.tlb->tlb_flush_all(iop->cookie);  in io_pgtable_tlb_flush_all()
226 	if (iop->cfg.tlb && iop->cfg.tlb->tlb_flush_walk)  in io_pgtable_tlb_flush_walk()
227 		iop->cfg.tlb->tlb_flush_walk(iova, size, granule, iop->cookie);  in io_pgtable_tlb_flush_walk()
235 	if (iop->cfg.tlb && iop->cfg.tlb->tlb_add_page)  in io_pgtable_tlb_add_page()
236 		iop->cfg.tlb->tlb_add_page(gather, iova, granule, iop->cookie);  in io_pgtable_tlb_add_page()
240  * struct io_pgtable_init_fns - Alloc/free a set of page tables for a