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1 | #ifndef USB_F_MASS_STORAGE_H |
2 | #define USB_F_MASS_STORAGE_H | |
3 | ||
4 | #include "storage_common.h" | |
5 | ||
6 | struct fsg_module_parameters { | |
7 | char *file[FSG_MAX_LUNS]; | |
8 | bool ro[FSG_MAX_LUNS]; | |
9 | bool removable[FSG_MAX_LUNS]; | |
10 | bool cdrom[FSG_MAX_LUNS]; | |
11 | bool nofua[FSG_MAX_LUNS]; | |
12 | ||
13 | unsigned int file_count, ro_count, removable_count, cdrom_count; | |
14 | unsigned int nofua_count; | |
15 | unsigned int luns; /* nluns */ | |
16 | bool stall; /* can_stall */ | |
17 | }; | |
18 | ||
19 | #define _FSG_MODULE_PARAM_ARRAY(prefix, params, name, type, desc) \ | |
20 | module_param_array_named(prefix ## name, params.name, type, \ | |
21 | &prefix ## params.name ## _count, \ | |
22 | S_IRUGO); \ | |
23 | MODULE_PARM_DESC(prefix ## name, desc) | |
24 | ||
25 | #define _FSG_MODULE_PARAM(prefix, params, name, type, desc) \ | |
26 | module_param_named(prefix ## name, params.name, type, \ | |
27 | S_IRUGO); \ | |
28 | MODULE_PARM_DESC(prefix ## name, desc) | |
29 | ||
30 | #define __FSG_MODULE_PARAMETERS(prefix, params) \ | |
31 | _FSG_MODULE_PARAM_ARRAY(prefix, params, file, charp, \ | |
32 | "names of backing files or devices"); \ | |
33 | _FSG_MODULE_PARAM_ARRAY(prefix, params, ro, bool, \ | |
34 | "true to force read-only"); \ | |
35 | _FSG_MODULE_PARAM_ARRAY(prefix, params, removable, bool, \ | |
36 | "true to simulate removable media"); \ | |
37 | _FSG_MODULE_PARAM_ARRAY(prefix, params, cdrom, bool, \ | |
38 | "true to simulate CD-ROM instead of disk"); \ | |
39 | _FSG_MODULE_PARAM_ARRAY(prefix, params, nofua, bool, \ | |
40 | "true to ignore SCSI WRITE(10,12) FUA bit"); \ | |
41 | _FSG_MODULE_PARAM(prefix, params, luns, uint, \ | |
42 | "number of LUNs"); \ | |
43 | _FSG_MODULE_PARAM(prefix, params, stall, bool, \ | |
44 | "false to prevent bulk stalls") | |
45 | ||
46 | #ifdef CONFIG_USB_GADGET_DEBUG_FILES | |
47 | ||
48 | #define FSG_MODULE_PARAMETERS(prefix, params) \ | |
49 | __FSG_MODULE_PARAMETERS(prefix, params); \ | |
50 | module_param_named(num_buffers, fsg_num_buffers, uint, S_IRUGO);\ | |
51 | MODULE_PARM_DESC(num_buffers, "Number of pipeline buffers") | |
52 | #else | |
53 | ||
54 | #define FSG_MODULE_PARAMETERS(prefix, params) \ | |
55 | __FSG_MODULE_PARAMETERS(prefix, params) | |
56 | ||
57 | #endif | |
58 | ||
59 | struct fsg_common; | |
60 | ||
61 | /* FSF callback functions */ | |
62 | struct fsg_operations { | |
63 | /* | |
64 | * Callback function to call when thread exits. If no | |
65 | * callback is set or it returns value lower then zero MSF | |
66 | * will force eject all LUNs it operates on (including those | |
67 | * marked as non-removable or with prevent_medium_removal flag | |
68 | * set). | |
69 | */ | |
70 | int (*thread_exits)(struct fsg_common *common); | |
71 | }; | |
72 | ||
73 | struct fsg_lun_config { | |
74 | const char *filename; | |
75 | char ro; | |
76 | char removable; | |
77 | char cdrom; | |
78 | char nofua; | |
79 | }; | |
80 | ||
81 | struct fsg_config { | |
82 | unsigned nluns; | |
83 | struct fsg_lun_config luns[FSG_MAX_LUNS]; | |
84 | ||
85 | /* Callback functions. */ | |
86 | const struct fsg_operations *ops; | |
87 | /* Gadget's private data. */ | |
88 | void *private_data; | |
89 | ||
90 | const char *vendor_name; /* 8 characters or less */ | |
91 | const char *product_name; /* 16 characters or less */ | |
92 | ||
93 | char can_stall; | |
94 | unsigned int fsg_num_buffers; | |
95 | }; | |
96 | ||
97 | void fsg_common_get(struct fsg_common *common); | |
98 | ||
99 | void fsg_common_put(struct fsg_common *common); | |
100 | ||
101 | struct fsg_common *fsg_common_init(struct fsg_common *common, | |
102 | struct usb_composite_dev *cdev, | |
103 | struct fsg_config *cfg); | |
104 | ||
105 | void fsg_config_from_params(struct fsg_config *cfg, | |
106 | const struct fsg_module_parameters *params, | |
107 | unsigned int fsg_num_buffers); | |
108 | ||
109 | static inline struct fsg_common * | |
110 | fsg_common_from_params(struct fsg_common *common, | |
111 | struct usb_composite_dev *cdev, | |
112 | const struct fsg_module_parameters *params, | |
113 | unsigned int fsg_num_buffers) | |
114 | __attribute__((unused)); | |
115 | static inline struct fsg_common * | |
116 | fsg_common_from_params(struct fsg_common *common, | |
117 | struct usb_composite_dev *cdev, | |
118 | const struct fsg_module_parameters *params, | |
119 | unsigned int fsg_num_buffers) | |
120 | { | |
121 | struct fsg_config cfg; | |
122 | fsg_config_from_params(&cfg, params, fsg_num_buffers); | |
123 | return fsg_common_init(common, cdev, &cfg); | |
124 | } | |
125 | ||
126 | #endif /* USB_F_MASS_STORAGE_H */ |