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
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 */
86