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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; | |
8d4bfe40 | 74 | struct iommu_domain iommu_domain; |
695093e3 VS |
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 */ |