diff options
author | Andrzej Pietrasiewicz <andrzej.p@samsung.com> | 2013-09-26 14:38:17 +0200 |
---|---|---|
committer | Felipe Balbi <balbi@ti.com> | 2013-10-01 09:51:17 -0500 |
commit | f3fed36749a1f9a948afdc3b21008e7f65e43220 (patch) | |
tree | cc2d014e0ca90d0e7a5541bb24b2fbc4afc0fe11 /drivers/usb/gadget/f_mass_storage.h | |
parent | 6fdc5dd25e0cd5afc114fe65427150c65f0eb67b (diff) | |
download | op-kernel-dev-f3fed36749a1f9a948afdc3b21008e7f65e43220.zip op-kernel-dev-f3fed36749a1f9a948afdc3b21008e7f65e43220.tar.gz |
usb: gadget: f_mass_storage: factor out a header file
In order to prepare for the new function interface the f_mass_storage.c
needs to be compiled as a module, and so a header file will be required.
This patch factors out some code to a new f_mass_storage.h.
Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Diffstat (limited to 'drivers/usb/gadget/f_mass_storage.h')
-rw-r--r-- | drivers/usb/gadget/f_mass_storage.h | 126 |
1 files changed, 126 insertions, 0 deletions
diff --git a/drivers/usb/gadget/f_mass_storage.h b/drivers/usb/gadget/f_mass_storage.h new file mode 100644 index 0000000..b64761d --- /dev/null +++ b/drivers/usb/gadget/f_mass_storage.h @@ -0,0 +1,126 @@ +#ifndef USB_F_MASS_STORAGE_H +#define USB_F_MASS_STORAGE_H + +#include "storage_common.h" + +struct fsg_module_parameters { + char *file[FSG_MAX_LUNS]; + bool ro[FSG_MAX_LUNS]; + bool removable[FSG_MAX_LUNS]; + bool cdrom[FSG_MAX_LUNS]; + bool nofua[FSG_MAX_LUNS]; + + unsigned int file_count, ro_count, removable_count, cdrom_count; + unsigned int nofua_count; + unsigned int luns; /* nluns */ + bool stall; /* can_stall */ +}; + +#define _FSG_MODULE_PARAM_ARRAY(prefix, params, name, type, desc) \ + module_param_array_named(prefix ## name, params.name, type, \ + &prefix ## params.name ## _count, \ + S_IRUGO); \ + MODULE_PARM_DESC(prefix ## name, desc) + +#define _FSG_MODULE_PARAM(prefix, params, name, type, desc) \ + module_param_named(prefix ## name, params.name, type, \ + S_IRUGO); \ + MODULE_PARM_DESC(prefix ## name, desc) + +#define __FSG_MODULE_PARAMETERS(prefix, params) \ + _FSG_MODULE_PARAM_ARRAY(prefix, params, file, charp, \ + "names of backing files or devices"); \ + _FSG_MODULE_PARAM_ARRAY(prefix, params, ro, bool, \ + "true to force read-only"); \ + _FSG_MODULE_PARAM_ARRAY(prefix, params, removable, bool, \ + "true to simulate removable media"); \ + _FSG_MODULE_PARAM_ARRAY(prefix, params, cdrom, bool, \ + "true to simulate CD-ROM instead of disk"); \ + _FSG_MODULE_PARAM_ARRAY(prefix, params, nofua, bool, \ + "true to ignore SCSI WRITE(10,12) FUA bit"); \ + _FSG_MODULE_PARAM(prefix, params, luns, uint, \ + "number of LUNs"); \ + _FSG_MODULE_PARAM(prefix, params, stall, bool, \ + "false to prevent bulk stalls") + +#ifdef CONFIG_USB_GADGET_DEBUG_FILES + +#define FSG_MODULE_PARAMETERS(prefix, params) \ + __FSG_MODULE_PARAMETERS(prefix, params); \ + module_param_named(num_buffers, fsg_num_buffers, uint, S_IRUGO);\ + MODULE_PARM_DESC(num_buffers, "Number of pipeline buffers") +#else + +#define FSG_MODULE_PARAMETERS(prefix, params) \ + __FSG_MODULE_PARAMETERS(prefix, params) + +#endif + +struct fsg_common; + +/* FSF callback functions */ +struct fsg_operations { + /* + * Callback function to call when thread exits. If no + * callback is set or it returns value lower then zero MSF + * will force eject all LUNs it operates on (including those + * marked as non-removable or with prevent_medium_removal flag + * set). + */ + int (*thread_exits)(struct fsg_common *common); +}; + +struct fsg_lun_config { + const char *filename; + char ro; + char removable; + char cdrom; + char nofua; +}; + +struct fsg_config { + unsigned nluns; + struct fsg_lun_config luns[FSG_MAX_LUNS]; + + /* Callback functions. */ + const struct fsg_operations *ops; + /* Gadget's private data. */ + void *private_data; + + const char *vendor_name; /* 8 characters or less */ + const char *product_name; /* 16 characters or less */ + + char can_stall; + unsigned int fsg_num_buffers; +}; + +void fsg_common_get(struct fsg_common *common); + +void fsg_common_put(struct fsg_common *common); + +struct fsg_common *fsg_common_init(struct fsg_common *common, + struct usb_composite_dev *cdev, + struct fsg_config *cfg); + +void fsg_config_from_params(struct fsg_config *cfg, + const struct fsg_module_parameters *params, + unsigned int fsg_num_buffers); + +static inline struct fsg_common * +fsg_common_from_params(struct fsg_common *common, + struct usb_composite_dev *cdev, + const struct fsg_module_parameters *params, + unsigned int fsg_num_buffers) + __attribute__((unused)); +static inline struct fsg_common * +fsg_common_from_params(struct fsg_common *common, + struct usb_composite_dev *cdev, + const struct fsg_module_parameters *params, + unsigned int fsg_num_buffers) +{ + struct fsg_config cfg; + fsg_config_from_params(&cfg, params, fsg_num_buffers); + return fsg_common_init(common, cdev, &cfg); +} + +#endif /* USB_F_MASS_STORAGE_H */ |