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f3fed367 AP |
1 | #ifndef USB_F_MASS_STORAGE_H |
2 | #define USB_F_MASS_STORAGE_H | |
3 | ||
e5eaa0dc | 4 | #include <linux/usb/composite.h> |
f3fed367 AP |
5 | #include "storage_common.h" |
6 | ||
7 | struct fsg_module_parameters { | |
8 | char *file[FSG_MAX_LUNS]; | |
9 | bool ro[FSG_MAX_LUNS]; | |
10 | bool removable[FSG_MAX_LUNS]; | |
11 | bool cdrom[FSG_MAX_LUNS]; | |
12 | bool nofua[FSG_MAX_LUNS]; | |
13 | ||
14 | unsigned int file_count, ro_count, removable_count, cdrom_count; | |
15 | unsigned int nofua_count; | |
16 | unsigned int luns; /* nluns */ | |
17 | bool stall; /* can_stall */ | |
18 | }; | |
19 | ||
20 | #define _FSG_MODULE_PARAM_ARRAY(prefix, params, name, type, desc) \ | |
21 | module_param_array_named(prefix ## name, params.name, type, \ | |
22 | &prefix ## params.name ## _count, \ | |
23 | S_IRUGO); \ | |
24 | MODULE_PARM_DESC(prefix ## name, desc) | |
25 | ||
26 | #define _FSG_MODULE_PARAM(prefix, params, name, type, desc) \ | |
27 | module_param_named(prefix ## name, params.name, type, \ | |
28 | S_IRUGO); \ | |
29 | MODULE_PARM_DESC(prefix ## name, desc) | |
30 | ||
31 | #define __FSG_MODULE_PARAMETERS(prefix, params) \ | |
32 | _FSG_MODULE_PARAM_ARRAY(prefix, params, file, charp, \ | |
33 | "names of backing files or devices"); \ | |
34 | _FSG_MODULE_PARAM_ARRAY(prefix, params, ro, bool, \ | |
35 | "true to force read-only"); \ | |
36 | _FSG_MODULE_PARAM_ARRAY(prefix, params, removable, bool, \ | |
37 | "true to simulate removable media"); \ | |
38 | _FSG_MODULE_PARAM_ARRAY(prefix, params, cdrom, bool, \ | |
39 | "true to simulate CD-ROM instead of disk"); \ | |
40 | _FSG_MODULE_PARAM_ARRAY(prefix, params, nofua, bool, \ | |
41 | "true to ignore SCSI WRITE(10,12) FUA bit"); \ | |
42 | _FSG_MODULE_PARAM(prefix, params, luns, uint, \ | |
43 | "number of LUNs"); \ | |
44 | _FSG_MODULE_PARAM(prefix, params, stall, bool, \ | |
45 | "false to prevent bulk stalls") | |
46 | ||
47 | #ifdef CONFIG_USB_GADGET_DEBUG_FILES | |
48 | ||
49 | #define FSG_MODULE_PARAMETERS(prefix, params) \ | |
50 | __FSG_MODULE_PARAMETERS(prefix, params); \ | |
51 | module_param_named(num_buffers, fsg_num_buffers, uint, S_IRUGO);\ | |
52 | MODULE_PARM_DESC(num_buffers, "Number of pipeline buffers") | |
53 | #else | |
54 | ||
55 | #define FSG_MODULE_PARAMETERS(prefix, params) \ | |
56 | __FSG_MODULE_PARAMETERS(prefix, params) | |
57 | ||
58 | #endif | |
59 | ||
60 | struct fsg_common; | |
61 | ||
62 | /* FSF callback functions */ | |
63 | struct fsg_operations { | |
64 | /* | |
65 | * Callback function to call when thread exits. If no | |
66 | * callback is set or it returns value lower then zero MSF | |
67 | * will force eject all LUNs it operates on (including those | |
68 | * marked as non-removable or with prevent_medium_removal flag | |
69 | * set). | |
70 | */ | |
71 | int (*thread_exits)(struct fsg_common *common); | |
72 | }; | |
73 | ||
e5eaa0dc AP |
74 | struct fsg_opts { |
75 | struct fsg_common *common; | |
76 | struct usb_function_instance func_inst; | |
77 | bool no_configfs; /* for legacy gadgets */ | |
78 | }; | |
79 | ||
f3fed367 AP |
80 | struct fsg_lun_config { |
81 | const char *filename; | |
82 | char ro; | |
83 | char removable; | |
84 | char cdrom; | |
85 | char nofua; | |
86 | }; | |
87 | ||
88 | struct fsg_config { | |
89 | unsigned nluns; | |
90 | struct fsg_lun_config luns[FSG_MAX_LUNS]; | |
91 | ||
92 | /* Callback functions. */ | |
93 | const struct fsg_operations *ops; | |
94 | /* Gadget's private data. */ | |
95 | void *private_data; | |
96 | ||
97 | const char *vendor_name; /* 8 characters or less */ | |
98 | const char *product_name; /* 16 characters or less */ | |
99 | ||
100 | char can_stall; | |
101 | unsigned int fsg_num_buffers; | |
102 | }; | |
103 | ||
e5eaa0dc AP |
104 | static inline struct fsg_opts * |
105 | fsg_opts_from_func_inst(const struct usb_function_instance *fi) | |
106 | { | |
107 | return container_of(fi, struct fsg_opts, func_inst); | |
108 | } | |
109 | ||
f3fed367 AP |
110 | void fsg_common_get(struct fsg_common *common); |
111 | ||
112 | void fsg_common_put(struct fsg_common *common); | |
113 | ||
114 | struct fsg_common *fsg_common_init(struct fsg_common *common, | |
115 | struct usb_composite_dev *cdev, | |
116 | struct fsg_config *cfg); | |
117 | ||
bd528d4e AP |
118 | void fsg_common_set_sysfs(struct fsg_common *common, bool sysfs); |
119 | ||
6313caac AP |
120 | int fsg_common_set_num_buffers(struct fsg_common *common, unsigned int n); |
121 | ||
e5eaa0dc AP |
122 | void fsg_common_free_buffers(struct fsg_common *common); |
123 | ||
a891d7a3 AP |
124 | int fsg_common_set_cdev(struct fsg_common *common, |
125 | struct usb_composite_dev *cdev, bool can_stall); | |
126 | ||
70634170 AP |
127 | void fsg_common_remove_lun(struct fsg_lun *lun, bool sysfs); |
128 | ||
129 | void fsg_common_remove_luns(struct fsg_common *common); | |
130 | ||
131 | void fsg_common_free_luns(struct fsg_common *common); | |
132 | ||
133 | int fsg_common_set_nluns(struct fsg_common *common, int nluns); | |
134 | ||
b27c08c9 AP |
135 | int fsg_common_create_lun(struct fsg_common *common, struct fsg_lun_config *cfg, |
136 | unsigned int id, const char *name, | |
137 | const char **name_pfx); | |
138 | ||
139 | int fsg_common_create_luns(struct fsg_common *common, struct fsg_config *cfg); | |
140 | ||
23682e3c AP |
141 | void fsg_common_set_inquiry_string(struct fsg_common *common, const char *vn, |
142 | const char *pn); | |
143 | ||
5de862d7 AP |
144 | int fsg_common_run_thread(struct fsg_common *common); |
145 | ||
f3fed367 AP |
146 | void fsg_config_from_params(struct fsg_config *cfg, |
147 | const struct fsg_module_parameters *params, | |
148 | unsigned int fsg_num_buffers); | |
149 | ||
150 | static inline struct fsg_common * | |
151 | fsg_common_from_params(struct fsg_common *common, | |
152 | struct usb_composite_dev *cdev, | |
153 | const struct fsg_module_parameters *params, | |
154 | unsigned int fsg_num_buffers) | |
155 | __attribute__((unused)); | |
156 | static inline struct fsg_common * | |
157 | fsg_common_from_params(struct fsg_common *common, | |
158 | struct usb_composite_dev *cdev, | |
159 | const struct fsg_module_parameters *params, | |
160 | unsigned int fsg_num_buffers) | |
161 | { | |
162 | struct fsg_config cfg; | |
163 | fsg_config_from_params(&cfg, params, fsg_num_buffers); | |
164 | return fsg_common_init(common, cdev, &cfg); | |
165 | } | |
166 | ||
167 | #endif /* USB_F_MASS_STORAGE_H */ |