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bbf9d17d GR |
1 | /* |
2 | * Freescale Management Complex (MC) bus private declarations | |
3 | * | |
4 | * Copyright (C) 2014 Freescale Semiconductor, Inc. | |
5 | * Author: German Rivera <German.Rivera@freescale.com> | |
6 | * | |
7 | * This file is licensed under the terms of the GNU General Public | |
8 | * License version 2. This program is licensed "as is" without any | |
9 | * warranty of any kind, whether express or implied. | |
10 | */ | |
11 | #ifndef _FSL_MC_PRIVATE_H_ | |
12 | #define _FSL_MC_PRIVATE_H_ | |
13 | ||
14 | #include "../include/mc.h" | |
15 | #include <linux/mutex.h> | |
16 | #include <linux/stringify.h> | |
17 | ||
f2f2726b GR |
18 | #define FSL_MC_DPRC_DRIVER_NAME "fsl_mc_dprc" |
19 | ||
bbf9d17d GR |
20 | #define FSL_MC_DEVICE_MATCH(_mc_dev, _obj_desc) \ |
21 | (strcmp((_mc_dev)->obj_desc.type, (_obj_desc)->type) == 0 && \ | |
22 | (_mc_dev)->obj_desc.id == (_obj_desc)->id) | |
23 | ||
197f4d6a GR |
24 | #define FSL_MC_IS_ALLOCATABLE(_obj_type) \ |
25 | (strcmp(_obj_type, "dpbp") == 0 || \ | |
26 | strcmp(_obj_type, "dpmcp") == 0 || \ | |
27 | strcmp(_obj_type, "dpcon") == 0) | |
28 | ||
bbf9d17d GR |
29 | /** |
30 | * struct fsl_mc - Private data of a "fsl,qoriq-mc" platform device | |
31 | * @root_mc_bus_dev: MC object device representing the root DPRC | |
32 | * @addr_translation_ranges: array of bus to system address translation ranges | |
33 | */ | |
34 | struct fsl_mc { | |
35 | struct fsl_mc_device *root_mc_bus_dev; | |
36 | uint8_t num_translation_ranges; | |
37 | struct fsl_mc_addr_translation_range *translation_ranges; | |
38 | }; | |
39 | ||
bbf9d17d GR |
40 | /** |
41 | * struct fsl_mc_addr_translation_range - bus to system address translation | |
42 | * range | |
43 | * @start_mc_addr: Start MC address of the range being translated | |
44 | * @end_mc_addr: MC address of the first byte after the range (last MC | |
45 | * address of the range is end_mc_addr - 1) | |
46 | * @start_phys_addr: system physical address corresponding to start_mc_addr | |
47 | */ | |
48 | struct fsl_mc_addr_translation_range { | |
49 | uint64_t start_mc_addr; | |
50 | uint64_t end_mc_addr; | |
51 | phys_addr_t start_phys_addr; | |
52 | }; | |
53 | ||
197f4d6a GR |
54 | /** |
55 | * struct fsl_mc_resource_pool - Pool of MC resources of a given | |
56 | * type | |
57 | * @type: type of resources in the pool | |
58 | * @max_count: maximum number of resources in the pool | |
59 | * @free_count: number of free resources in the pool | |
60 | * @mutex: mutex to serialize access to the pool's free list | |
61 | * @free_list: anchor node of list of free resources in the pool | |
62 | * @mc_bus: pointer to the MC bus that owns this resource pool | |
63 | */ | |
64 | struct fsl_mc_resource_pool { | |
65 | enum fsl_mc_pool_type type; | |
66 | int16_t max_count; | |
67 | int16_t free_count; | |
68 | struct mutex mutex; /* serializes access to free_list */ | |
69 | struct list_head free_list; | |
70 | struct fsl_mc_bus *mc_bus; | |
71 | }; | |
72 | ||
73 | /** | |
74 | * struct fsl_mc_bus - logical bus that corresponds to a physical DPRC | |
75 | * @mc_dev: fsl-mc device for the bus device itself. | |
76 | * @resource_pools: array of resource pools (one pool per resource type) | |
77 | * for this MC bus. These resources represent allocatable entities | |
78 | * from the physical DPRC. | |
79 | * @scan_mutex: Serializes bus scanning | |
80 | */ | |
81 | struct fsl_mc_bus { | |
82 | struct fsl_mc_device mc_dev; | |
83 | struct fsl_mc_resource_pool resource_pools[FSL_MC_NUM_POOL_TYPES]; | |
84 | struct mutex scan_mutex; /* serializes bus scanning */ | |
85 | }; | |
86 | ||
87 | #define to_fsl_mc_bus(_mc_dev) \ | |
88 | container_of(_mc_dev, struct fsl_mc_bus, mc_dev) | |
89 | ||
bbf9d17d GR |
90 | int __must_check fsl_mc_device_add(struct dprc_obj_desc *obj_desc, |
91 | struct fsl_mc_io *mc_io, | |
92 | struct device *parent_dev, | |
93 | struct fsl_mc_device **new_mc_dev); | |
94 | ||
95 | void fsl_mc_device_remove(struct fsl_mc_device *mc_dev); | |
96 | ||
f2f2726b GR |
97 | int dprc_scan_container(struct fsl_mc_device *mc_bus_dev); |
98 | ||
99 | int dprc_scan_objects(struct fsl_mc_device *mc_bus_dev); | |
100 | ||
101 | int __init dprc_driver_init(void); | |
102 | ||
103 | void __exit dprc_driver_exit(void); | |
104 | ||
197f4d6a GR |
105 | int __must_check fsl_mc_resource_allocate(struct fsl_mc_bus *mc_bus, |
106 | enum fsl_mc_pool_type pool_type, | |
107 | struct fsl_mc_resource | |
108 | **new_resource); | |
109 | ||
110 | void fsl_mc_resource_free(struct fsl_mc_resource *resource); | |
111 | ||
bbf9d17d | 112 | #endif /* _FSL_MC_PRIVATE_H_ */ |