Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@xxxxxxxxxxx>
Signed-off-by: Kyungmin Park <kyungmin.park@xxxxxxxxxxx>
---
drivers/usb/gadget/f_mass_storage.c | 215 +---------------------------------
drivers/usb/gadget/f_mass_storage.h | 110 ++++++++++++++++++
2 files changed, 117 insertions(+), 208 deletions(-)
create mode 100644 drivers/usb/gadget/f_mass_storage.h
diff --git a/drivers/usb/gadget/f_mass_storage.c b/drivers/usb/gadget/f_mass_storage.c
index 5d027b3..d155115 100644
--- a/drivers/usb/gadget/f_mass_storage.c
+++ b/drivers/usb/gadget/f_mass_storage.c
@@ -229,125 +229,10 @@
static const char fsg_string_interface[] = "Mass Storage";
#include "storage_common.c"
-
+#include "f_mass_storage.h"
/*-------------------------------------------------------------------------*/
-struct fsg_dev;
-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);
-
- /*
- * Called prior to ejection. Negative return means error,
- * zero means to continue with ejection, positive means not to
- * eject.
- */
- int (*pre_eject)(struct fsg_common *common,
- struct fsg_lun *lun, int num);
- /*
- * Called after ejection. Negative return means error, zero
- * or positive is just a success.
- */
- int (*post_eject)(struct fsg_common *common,
- struct fsg_lun *lun, int num);
-};
-
-/* Data shared by all the FSG instances. */
-struct fsg_common {
- struct usb_gadget *gadget;
- struct usb_composite_dev *cdev;
- struct fsg_dev *fsg, *new_fsg;
- wait_queue_head_t fsg_wait;
-
- /* filesem protects: backing files in use */
- struct rw_semaphore filesem;
-
- /* lock protects: state, all the req_busy's */
- spinlock_t lock;
-
- struct usb_ep *ep0; /* Copy of gadget->ep0 */
- struct usb_request *ep0req; /* Copy of cdev->req */
- unsigned int ep0_req_tag;
-
- struct fsg_buffhd *next_buffhd_to_fill;
- struct fsg_buffhd *next_buffhd_to_drain;
- struct fsg_buffhd *buffhds;
-
- int cmnd_size;
- u8 cmnd[MAX_COMMAND_SIZE];
-
- unsigned int nluns;
- unsigned int lun;
- struct fsg_lun *luns;
- struct fsg_lun *curlun;
-
- unsigned int bulk_out_maxpacket;
- enum fsg_state state; /* For exception handling */
- unsigned int exception_req_tag;
-
- enum data_direction data_dir;
- u32 data_size;
- u32 data_size_from_cmnd;
- u32 tag;
- u32 residue;
- u32 usb_amount_left;
-
- unsigned int can_stall:1;
- unsigned int free_storage_on_release:1;
- unsigned int phase_error:1;
- unsigned int short_packet_received:1;
- unsigned int bad_lun_okay:1;
- unsigned int running:1;
-
- int thread_wakeup_needed;
- struct completion thread_notifier;
- struct task_struct *thread_task;
-
- /* Callback functions. */
- const struct fsg_operations *ops;
- /* Gadget's private data. */
- void *private_data;
-
- /*
- * Vendor (8 chars), product (16 chars), release (4
- * hexadecimal digits) and NUL byte
- */
- char inquiry_string[8 + 16 + 4 + 1];
-
- struct kref ref;
-};
-
-struct fsg_config {
- unsigned nluns;
- struct fsg_lun_config {
- const char *filename;
- char ro;
- char removable;
- char cdrom;
- char nofua;
- } 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;
-};
-
struct fsg_dev {
struct usb_function function;
struct usb_gadget *gadget; /* Copy of cdev->gadget */
@@ -2622,17 +2507,19 @@ static void fsg_lun_release(struct device *dev)
/* Nothing needs to be done */
}
-static inline void fsg_common_get(struct fsg_common *common)
+void fsg_common_get(struct fsg_common *common)
{
kref_get(&common->ref);
}
+EXPORT_SYMBOL(fsg_common_get);
-static inline void fsg_common_put(struct fsg_common *common)
+void fsg_common_put(struct fsg_common *common)
{
kref_put(&common->ref, fsg_common_release);
}
+EXPORT_SYMBOL(fsg_common_put);
-static struct fsg_common *fsg_common_init(struct fsg_common *common,
+struct fsg_common *fsg_common_init(struct fsg_common *common,
struct usb_composite_dev *cdev,
struct fsg_config *cfg)
{
@@ -2837,6 +2724,7 @@ error_release:
fsg_common_release(&common->ref);
return ERR_PTR(rc);
}
+EXPORT_SYMBOL(fsg_common_init);
static void fsg_common_release(struct kref *ref)
{
@@ -3007,92 +2895,3 @@ static int fsg_bind_config(struct usb_composite_dev *cdev,
return rc;
}
-
-/************************* Module parameters *************************/
-
-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")
-
-static void
-fsg_config_from_params(struct fsg_config *cfg,
- const struct fsg_module_parameters *params)
-{
- struct fsg_lun_config *lun;
- unsigned i;
-
- /* Configure LUNs */
- cfg->nluns =
- min(params->luns ?: (params->file_count ?: 1u),
- (unsigned)FSG_MAX_LUNS);
- for (i = 0, lun = cfg->luns; i < cfg->nluns; ++i, ++lun) {
- lun->ro = !!params->ro[i];
- lun->cdrom = !!params->cdrom[i];
- lun->removable = !!params->removable[i];
- lun->filename =
- params->file_count > i && params->file[i][0]
- ? params->file[i]
- : 0;
- }
-
- /* Let MSF use defaults */
- cfg->vendor_name = 0;
- cfg->product_name = 0;
-
- cfg->ops = NULL;
- cfg->private_data = NULL;
-
- /* Finalise */
- cfg->can_stall = params->stall;
-}
-
-static inline struct fsg_common *
-fsg_common_from_params(struct fsg_common *common,
- struct usb_composite_dev *cdev,
- const struct fsg_module_parameters *params)
- __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)
-{
- struct fsg_config cfg;
- fsg_config_from_params(&cfg, params);
- return fsg_common_init(common, cdev, &cfg);
-}
diff --git a/drivers/usb/gadget/f_mass_storage.h b/drivers/usb/gadget/f_mass_storage.h
new file mode 100644
index 0000000..9f8d47e
--- /dev/null
+++ b/drivers/usb/gadget/f_mass_storage.h
@@ -0,0 +1,110 @@
+#ifndef F_MASS_STORAGE_H
+#define F_MASS_STORAGE_H
+
+#include "storage_common.h"
+
+struct fsg_common;
+struct fsg_operations;
+struct usb_composite_dev;
+struct fsg_dev;
+struct fsg_lun;
+
+/* 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);
+
+ /*
+ * Called prior to ejection. Negative return means error,
+ * zero means to continue with ejection, positive means not to
+ * eject.
+ */
+ int (*pre_eject)(struct fsg_common *common,
+ struct fsg_lun *lun, int num);
+ /*
+ * Called after ejection. Negative return means error, zero
+ * or positive is just a success.
+ */
+ int (*post_eject)(struct fsg_common *common,
+ struct fsg_lun *lun, int num);
+};
+
+/* Data shared by all the FSG instances. */
+struct fsg_common {
+ struct usb_gadget *gadget;
+ struct usb_composite_dev *cdev;
+ struct fsg_dev *fsg, *new_fsg;
+ wait_queue_head_t fsg_wait;
+
+ /* filesem protects: backing files in use */
+ struct rw_semaphore filesem;
+
+ /* lock protects: state, all the req_busy's */
+ spinlock_t lock;
+
+ struct usb_ep *ep0; /* Copy of gadget->ep0 */
+ struct usb_request *ep0req; /* Copy of cdev->req */
+ unsigned int ep0_req_tag;
+
+ struct fsg_buffhd *next_buffhd_to_fill;
+ struct fsg_buffhd *next_buffhd_to_drain;
+ struct fsg_buffhd *buffhds;
+
+ int cmnd_size;
+ u8 cmnd[MAX_COMMAND_SIZE];
+
+ unsigned int nluns;
+ unsigned int lun;
+ struct fsg_lun *luns;
+ struct fsg_lun *curlun;
+
+ unsigned int bulk_out_maxpacket;
+ enum fsg_state state; /* For exception handling */
+ unsigned int exception_req_tag;
+
+ enum data_direction data_dir;
+ u32 data_size;
+ u32 data_size_from_cmnd;
+ u32 tag;
+ u32 residue;
+ u32 usb_amount_left;
+
+ unsigned int can_stall:1;
+ unsigned int free_storage_on_release:1;
+ unsigned int phase_error:1;
+ unsigned int short_packet_received:1;
+ unsigned int bad_lun_okay:1;
+ unsigned int running:1;
+
+ int thread_wakeup_needed;
+ struct completion thread_notifier;
+ struct task_struct *thread_task;
+
+ /* Callback functions. */
+ const struct fsg_operations *ops;
+ /* Gadget's private data. */
+ void *private_data;
+
+ /*
+ * Vendor (8 chars), product (16 chars), release (4
+ * hexadecimal digits) and NUL byte
+ */
+ char inquiry_string[8 + 16 + 4 + 1];
+
+ struct kref ref;
+};
+
+struct fsg_common *fsg_common_init(struct fsg_common *common,
+ struct usb_composite_dev *cdev,
+ struct fsg_config *cfg);
+
+void fsg_common_get(struct fsg_common *common);
+void fsg_common_put(struct fsg_common *common);
+
+#endif
--
1.7.0.4
--
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