1 /* 2 * This program is free software; you can redistribute it and/or modify 3 * it under the terms of the GNU General Public License, version 2, as 4 * published by the Free Software Foundation. 5 * 6 * This program is distributed in the hope that it will be useful, 7 * but WITHOUT ANY WARRANTY; without even the implied warranty of 8 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 9 * GNU General Public License for more details. 10 * 11 * You should have received a copy of the GNU General Public License 12 * along with this program; if not, write to the Free Software 13 * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. 14 * 15 * Copyright (C) 2013 Freescale Semiconductor, Inc. 16 * 17 */ 18 19 #ifndef __FSL_PAMU_DOMAIN_H 20 #define __FSL_PAMU_DOMAIN_H 21 22 #include "fsl_pamu.h" 23 24 struct dma_window { 25 phys_addr_t paddr; 26 u64 size; 27 int valid; 28 int prot; 29 }; 30 31 struct fsl_dma_domain { 32 /* 33 * Indicates the geometry size for the domain. 34 * This would be set when the geometry is 35 * configured for the domain. 36 */ 37 dma_addr_t geom_size; 38 /* 39 * Number of windows assocaited with this domain. 40 * During domain initialization, it is set to the 41 * the maximum number of subwindows allowed for a LIODN. 42 * Minimum value for this is 1 indicating a single PAMU 43 * window, without any sub windows. Value can be set/ 44 * queried by set_attr/get_attr API for DOMAIN_ATTR_WINDOWS. 45 * Value can only be set once the geometry has been configured. 46 */ 47 u32 win_cnt; 48 /* 49 * win_arr contains information of the configured 50 * windows for a domain. This is allocated only 51 * when the number of windows for the domain are 52 * set. 53 */ 54 struct dma_window *win_arr; 55 /* list of devices associated with the domain */ 56 struct list_head devices; 57 /* dma_domain states: 58 * mapped - A particular mapping has been created 59 * within the configured geometry. 60 * enabled - DMA has been enabled for the given 61 * domain. This translates to setting of the 62 * valid bit for the primary PAACE in the PAMU 63 * PAACT table. Domain geometry should be set and 64 * it must have a valid mapping before DMA can be 65 * enabled for it. 66 * 67 */ 68 int mapped; 69 int enabled; 70 /* stash_id obtained from the stash attribute details */ 71 u32 stash_id; 72 struct pamu_stash_attribute dma_stash; 73 u32 snoop_id; 74 struct iommu_domain iommu_domain; 75 spinlock_t domain_lock; 76 }; 77 78 /* domain-device relationship */ 79 struct device_domain_info { 80 struct list_head link; /* link to domain siblings */ 81 struct device *dev; 82 u32 liodn; 83 struct fsl_dma_domain *domain; /* pointer to domain */ 84 }; 85 #endif /* __FSL_PAMU_DOMAIN_H */ 86