Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) /* SPDX-License-Identifier: GPL-2.0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) #ifndef _LINUX_IOMMU_COMMON_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3) #define _LINUX_IOMMU_COMMON_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5) #include <linux/spinlock_types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6) #include <linux/device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7) #include <asm/page.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) #define IOMMU_POOL_HASHBITS     4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #define IOMMU_NR_POOLS          (1 << IOMMU_POOL_HASHBITS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #define IOMMU_ERROR_CODE	(~(unsigned long) 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) struct iommu_pool {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) 	unsigned long	start;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) 	unsigned long	end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) 	unsigned long	hint;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) 	spinlock_t	lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) struct iommu_map_table {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) 	unsigned long		table_map_base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) 	unsigned long		table_shift;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) 	unsigned long		nr_pools;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 	void			(*lazy_flush)(struct iommu_map_table *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 	unsigned long		poolsize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 	struct iommu_pool	pools[IOMMU_NR_POOLS];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 	u32			flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #define	IOMMU_HAS_LARGE_POOL	0x00000001
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #define	IOMMU_NO_SPAN_BOUND	0x00000002
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) #define	IOMMU_NEED_FLUSH	0x00000004
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 	struct iommu_pool	large_pool;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 	unsigned long		*map;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) extern void iommu_tbl_pool_init(struct iommu_map_table *iommu,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 				unsigned long num_entries,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 				u32 table_shift,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 				void (*lazy_flush)(struct iommu_map_table *),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 				bool large_pool, u32 npools,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 				bool skip_span_boundary_check);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) extern unsigned long iommu_tbl_range_alloc(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) 					   struct iommu_map_table *iommu,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) 					   unsigned long npages,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) 					   unsigned long *handle,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) 					   unsigned long mask,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) 					   unsigned int align_order);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) extern void iommu_tbl_range_free(struct iommu_map_table *iommu,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) 				 u64 dma_addr, unsigned long npages,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) 				 unsigned long entry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) #endif