1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 * 4 * Copyright (C) 2013 Freescale Semiconductor, Inc. 5 */ 6 7 #ifndef __FSL_PAMU_DOMAIN_H 8 #define __FSL_PAMU_DOMAIN_H 9 10 #include "fsl_pamu.h" 11 12 struct dma_window { 13 phys_addr_t paddr; 14 u64 size; 15 int valid; 16 int prot; 17 }; 18 19 struct fsl_dma_domain { 20 /* 21 * Indicates the geometry size for the domain. 22 * This would be set when the geometry is 23 * configured for the domain. 24 */ 25 dma_addr_t geom_size; 26 /* 27 * Number of windows assocaited with this domain. 28 * During domain initialization, it is set to the 29 * the maximum number of subwindows allowed for a LIODN. 30 * Minimum value for this is 1 indicating a single PAMU 31 * window, without any sub windows. Value can be set/ 32 * queried by set_attr/get_attr API for DOMAIN_ATTR_WINDOWS. 33 * Value can only be set once the geometry has been configured. 34 */ 35 u32 win_cnt; 36 /* 37 * win_arr contains information of the configured 38 * windows for a domain. This is allocated only 39 * when the number of windows for the domain are 40 * set. 41 */ 42 struct dma_window *win_arr; 43 /* list of devices associated with the domain */ 44 struct list_head devices; 45 /* dma_domain states: 46 * mapped - A particular mapping has been created 47 * within the configured geometry. 48 * enabled - DMA has been enabled for the given 49 * domain. This translates to setting of the 50 * valid bit for the primary PAACE in the PAMU 51 * PAACT table. Domain geometry should be set and 52 * it must have a valid mapping before DMA can be 53 * enabled for it. 54 * 55 */ 56 int mapped; 57 int enabled; 58 /* stash_id obtained from the stash attribute details */ 59 u32 stash_id; 60 struct pamu_stash_attribute dma_stash; 61 u32 snoop_id; 62 struct iommu_domain iommu_domain; 63 spinlock_t domain_lock; 64 }; 65 66 /* domain-device relationship */ 67 struct device_domain_info { 68 struct list_head link; /* link to domain siblings */ 69 struct device *dev; 70 u32 liodn; 71 struct fsl_dma_domain *domain; /* pointer to domain */ 72 }; 73 #endif /* __FSL_PAMU_DOMAIN_H */ 74