| Varun Sethi | 695093e | 2013-07-15 10:20:57 +0530 | [diff] [blame] | 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 */ |