blob: c90293f997095611f05de7ce559623bca490d6da [file] [log] [blame]
Varun Sethi695093e2013-07-15 10:20:57 +05301/*
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
24struct dma_window {
25 phys_addr_t paddr;
26 u64 size;
27 int valid;
28 int prot;
29};
30
31struct 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 */
79struct 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 */