18c2ecf20Sopenharmony_ci/* SPDX-License-Identifier: GPL-2.0 */ 28c2ecf20Sopenharmony_ci#ifndef _LINUX_IOMMU_COMMON_H 38c2ecf20Sopenharmony_ci#define _LINUX_IOMMU_COMMON_H 48c2ecf20Sopenharmony_ci 58c2ecf20Sopenharmony_ci#include <linux/spinlock_types.h> 68c2ecf20Sopenharmony_ci#include <linux/device.h> 78c2ecf20Sopenharmony_ci#include <asm/page.h> 88c2ecf20Sopenharmony_ci 98c2ecf20Sopenharmony_ci#define IOMMU_POOL_HASHBITS 4 108c2ecf20Sopenharmony_ci#define IOMMU_NR_POOLS (1 << IOMMU_POOL_HASHBITS) 118c2ecf20Sopenharmony_ci#define IOMMU_ERROR_CODE (~(unsigned long) 0) 128c2ecf20Sopenharmony_ci 138c2ecf20Sopenharmony_cistruct iommu_pool { 148c2ecf20Sopenharmony_ci unsigned long start; 158c2ecf20Sopenharmony_ci unsigned long end; 168c2ecf20Sopenharmony_ci unsigned long hint; 178c2ecf20Sopenharmony_ci spinlock_t lock; 188c2ecf20Sopenharmony_ci}; 198c2ecf20Sopenharmony_ci 208c2ecf20Sopenharmony_cistruct iommu_map_table { 218c2ecf20Sopenharmony_ci unsigned long table_map_base; 228c2ecf20Sopenharmony_ci unsigned long table_shift; 238c2ecf20Sopenharmony_ci unsigned long nr_pools; 248c2ecf20Sopenharmony_ci void (*lazy_flush)(struct iommu_map_table *); 258c2ecf20Sopenharmony_ci unsigned long poolsize; 268c2ecf20Sopenharmony_ci struct iommu_pool pools[IOMMU_NR_POOLS]; 278c2ecf20Sopenharmony_ci u32 flags; 288c2ecf20Sopenharmony_ci#define IOMMU_HAS_LARGE_POOL 0x00000001 298c2ecf20Sopenharmony_ci#define IOMMU_NO_SPAN_BOUND 0x00000002 308c2ecf20Sopenharmony_ci#define IOMMU_NEED_FLUSH 0x00000004 318c2ecf20Sopenharmony_ci struct iommu_pool large_pool; 328c2ecf20Sopenharmony_ci unsigned long *map; 338c2ecf20Sopenharmony_ci}; 348c2ecf20Sopenharmony_ci 358c2ecf20Sopenharmony_ciextern void iommu_tbl_pool_init(struct iommu_map_table *iommu, 368c2ecf20Sopenharmony_ci unsigned long num_entries, 378c2ecf20Sopenharmony_ci u32 table_shift, 388c2ecf20Sopenharmony_ci void (*lazy_flush)(struct iommu_map_table *), 398c2ecf20Sopenharmony_ci bool large_pool, u32 npools, 408c2ecf20Sopenharmony_ci bool skip_span_boundary_check); 418c2ecf20Sopenharmony_ci 428c2ecf20Sopenharmony_ciextern unsigned long iommu_tbl_range_alloc(struct device *dev, 438c2ecf20Sopenharmony_ci struct iommu_map_table *iommu, 448c2ecf20Sopenharmony_ci unsigned long npages, 458c2ecf20Sopenharmony_ci unsigned long *handle, 468c2ecf20Sopenharmony_ci unsigned long mask, 478c2ecf20Sopenharmony_ci unsigned int align_order); 488c2ecf20Sopenharmony_ci 498c2ecf20Sopenharmony_ciextern void iommu_tbl_range_free(struct iommu_map_table *iommu, 508c2ecf20Sopenharmony_ci u64 dma_addr, unsigned long npages, 518c2ecf20Sopenharmony_ci unsigned long entry); 528c2ecf20Sopenharmony_ci 538c2ecf20Sopenharmony_ci#endif 54