224 lines
6.4 KiB
C
224 lines
6.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
#ifndef USB_STORAGE_COMMON_H
|
|
#define USB_STORAGE_COMMON_H
|
|
|
|
#include <linux/device.h>
|
|
#include <linux/usb/storage.h>
|
|
#include <scsi/scsi.h>
|
|
#include <asm/unaligned.h>
|
|
|
|
#ifndef DEBUG
|
|
#undef VERBOSE_DEBUG
|
|
#undef DUMP_MSGS
|
|
#endif /* !DEBUG */
|
|
|
|
#ifdef VERBOSE_DEBUG
|
|
#define VLDBG LDBG
|
|
#else
|
|
#define VLDBG(lun, fmt, args...) do { } while (0)
|
|
#endif /* VERBOSE_DEBUG */
|
|
|
|
#define _LMSG(func, lun, fmt, args...) \
|
|
do { \
|
|
if ((lun)->name_pfx && *(lun)->name_pfx) \
|
|
func("%s/%s: " fmt, *(lun)->name_pfx, \
|
|
(lun)->name, ## args); \
|
|
else \
|
|
func("%s: " fmt, (lun)->name, ## args); \
|
|
} while (0)
|
|
|
|
#define LDBG(lun, fmt, args...) _LMSG(pr_debug, lun, fmt, ## args)
|
|
#define LERROR(lun, fmt, args...) _LMSG(pr_err, lun, fmt, ## args)
|
|
#define LWARN(lun, fmt, args...) _LMSG(pr_warn, lun, fmt, ## args)
|
|
#define LINFO(lun, fmt, args...) _LMSG(pr_info, lun, fmt, ## args)
|
|
|
|
|
|
#ifdef DUMP_MSGS
|
|
|
|
# define dump_msg(fsg, /* const char * */ label, \
|
|
/* const u8 * */ buf, /* unsigned */ length) \
|
|
do { \
|
|
if (length < 512) { \
|
|
DBG(fsg, "%s, length %u:\n", label, length); \
|
|
print_hex_dump(KERN_DEBUG, "", DUMP_PREFIX_OFFSET, \
|
|
16, 1, buf, length, 0); \
|
|
} \
|
|
} while (0)
|
|
|
|
# define dump_cdb(fsg) do { } while (0)
|
|
|
|
#else
|
|
|
|
# define dump_msg(fsg, /* const char * */ label, \
|
|
/* const u8 * */ buf, /* unsigned */ length) do { } while (0)
|
|
|
|
# ifdef VERBOSE_DEBUG
|
|
|
|
# define dump_cdb(fsg) \
|
|
print_hex_dump(KERN_DEBUG, "SCSI CDB: ", DUMP_PREFIX_NONE, \
|
|
16, 1, (fsg)->cmnd, (fsg)->cmnd_size, 0) \
|
|
|
|
# else
|
|
|
|
# define dump_cdb(fsg) do { } while (0)
|
|
|
|
# endif /* VERBOSE_DEBUG */
|
|
|
|
#endif /* DUMP_MSGS */
|
|
|
|
/* Length of a SCSI Command Data Block */
|
|
#define MAX_COMMAND_SIZE 16
|
|
|
|
/* SCSI Sense Key/Additional Sense Code/ASC Qualifier values */
|
|
#define SS_NO_SENSE 0
|
|
#define SS_COMMUNICATION_FAILURE 0x040800
|
|
#define SS_INVALID_COMMAND 0x052000
|
|
#define SS_INVALID_FIELD_IN_CDB 0x052400
|
|
#define SS_LOGICAL_BLOCK_ADDRESS_OUT_OF_RANGE 0x052100
|
|
#define SS_LOGICAL_UNIT_NOT_SUPPORTED 0x052500
|
|
#define SS_MEDIUM_NOT_PRESENT 0x023a00
|
|
#define SS_MEDIUM_REMOVAL_PREVENTED 0x055302
|
|
#define SS_NOT_READY_TO_READY_TRANSITION 0x062800
|
|
#define SS_RESET_OCCURRED 0x062900
|
|
#define SS_SAVING_PARAMETERS_NOT_SUPPORTED 0x053900
|
|
#define SS_UNRECOVERED_READ_ERROR 0x031100
|
|
#define SS_WRITE_ERROR 0x030c02
|
|
#define SS_WRITE_PROTECTED 0x072700
|
|
|
|
#define SK(x) ((u8) ((x) >> 16)) /* Sense Key byte, etc. */
|
|
#define ASC(x) ((u8) ((x) >> 8))
|
|
#define ASCQ(x) ((u8) (x))
|
|
|
|
/*
|
|
* Vendor (8 chars), product (16 chars), release (4 hexadecimal digits) and NUL
|
|
* byte
|
|
*/
|
|
#define INQUIRY_STRING_LEN ((size_t) (8 + 16 + 4 + 1))
|
|
|
|
struct fsg_lun {
|
|
struct file *filp;
|
|
loff_t file_length;
|
|
loff_t num_sectors;
|
|
|
|
unsigned int initially_ro:1;
|
|
unsigned int ro:1;
|
|
unsigned int removable:1;
|
|
unsigned int cdrom:1;
|
|
unsigned int prevent_medium_removal:1;
|
|
unsigned int registered:1;
|
|
unsigned int info_valid:1;
|
|
unsigned int nofua:1;
|
|
|
|
u32 sense_data;
|
|
u32 sense_data_info;
|
|
u32 unit_attention_data;
|
|
|
|
unsigned int blkbits; /* Bits of logical block size
|
|
of bound block device */
|
|
unsigned int blksize; /* logical block size of bound block device */
|
|
struct device dev;
|
|
const char *name; /* "lun.name" */
|
|
const char **name_pfx; /* "function.name" */
|
|
char inquiry_string[INQUIRY_STRING_LEN];
|
|
};
|
|
|
|
static inline bool fsg_lun_is_open(struct fsg_lun *curlun)
|
|
{
|
|
return curlun->filp != NULL;
|
|
}
|
|
|
|
/* Default size of buffer length. */
|
|
#define FSG_BUFLEN ((u32)16384)
|
|
|
|
/* Maximal number of LUNs supported in mass storage function */
|
|
#define FSG_MAX_LUNS 16
|
|
|
|
enum fsg_buffer_state {
|
|
BUF_STATE_SENDING = -2,
|
|
BUF_STATE_RECEIVING,
|
|
BUF_STATE_EMPTY = 0,
|
|
BUF_STATE_FULL
|
|
};
|
|
|
|
struct fsg_buffhd {
|
|
void *buf;
|
|
enum fsg_buffer_state state;
|
|
struct fsg_buffhd *next;
|
|
|
|
/*
|
|
* The NetChip 2280 is faster, and handles some protocol faults
|
|
* better, if we don't submit any short bulk-out read requests.
|
|
* So we will record the intended request length here.
|
|
*/
|
|
unsigned int bulk_out_intended_length;
|
|
|
|
struct usb_request *inreq;
|
|
struct usb_request *outreq;
|
|
};
|
|
|
|
enum fsg_state {
|
|
FSG_STATE_NORMAL,
|
|
FSG_STATE_ABORT_BULK_OUT,
|
|
FSG_STATE_PROTOCOL_RESET,
|
|
FSG_STATE_CONFIG_CHANGE,
|
|
FSG_STATE_EXIT,
|
|
FSG_STATE_TERMINATED
|
|
};
|
|
|
|
enum data_direction {
|
|
DATA_DIR_UNKNOWN = 0,
|
|
DATA_DIR_FROM_HOST,
|
|
DATA_DIR_TO_HOST,
|
|
DATA_DIR_NONE
|
|
};
|
|
|
|
static inline struct fsg_lun *fsg_lun_from_dev(struct device *dev)
|
|
{
|
|
return container_of(dev, struct fsg_lun, dev);
|
|
}
|
|
|
|
enum {
|
|
FSG_STRING_INTERFACE
|
|
};
|
|
|
|
extern struct usb_interface_descriptor fsg_intf_desc;
|
|
|
|
extern struct usb_endpoint_descriptor fsg_fs_bulk_in_desc;
|
|
extern struct usb_endpoint_descriptor fsg_fs_bulk_out_desc;
|
|
extern struct usb_descriptor_header *fsg_fs_function[];
|
|
|
|
extern struct usb_endpoint_descriptor fsg_hs_bulk_in_desc;
|
|
extern struct usb_endpoint_descriptor fsg_hs_bulk_out_desc;
|
|
extern struct usb_descriptor_header *fsg_hs_function[];
|
|
|
|
extern struct usb_endpoint_descriptor fsg_ss_bulk_in_desc;
|
|
extern struct usb_ss_ep_comp_descriptor fsg_ss_bulk_in_comp_desc;
|
|
extern struct usb_endpoint_descriptor fsg_ss_bulk_out_desc;
|
|
extern struct usb_ss_ep_comp_descriptor fsg_ss_bulk_out_comp_desc;
|
|
extern struct usb_descriptor_header *fsg_ss_function[];
|
|
|
|
void fsg_lun_close(struct fsg_lun *curlun);
|
|
int fsg_lun_open(struct fsg_lun *curlun, const char *filename);
|
|
int fsg_lun_fsync_sub(struct fsg_lun *curlun);
|
|
void store_cdrom_address(u8 *dest, int msf, u32 addr);
|
|
ssize_t fsg_show_ro(struct fsg_lun *curlun, char *buf);
|
|
ssize_t fsg_show_nofua(struct fsg_lun *curlun, char *buf);
|
|
ssize_t fsg_show_file(struct fsg_lun *curlun, struct rw_semaphore *filesem,
|
|
char *buf);
|
|
ssize_t fsg_show_inquiry_string(struct fsg_lun *curlun, char *buf);
|
|
ssize_t fsg_show_cdrom(struct fsg_lun *curlun, char *buf);
|
|
ssize_t fsg_show_removable(struct fsg_lun *curlun, char *buf);
|
|
ssize_t fsg_store_ro(struct fsg_lun *curlun, struct rw_semaphore *filesem,
|
|
const char *buf, size_t count);
|
|
ssize_t fsg_store_nofua(struct fsg_lun *curlun, const char *buf, size_t count);
|
|
ssize_t fsg_store_file(struct fsg_lun *curlun, struct rw_semaphore *filesem,
|
|
const char *buf, size_t count);
|
|
ssize_t fsg_store_cdrom(struct fsg_lun *curlun, struct rw_semaphore *filesem,
|
|
const char *buf, size_t count);
|
|
ssize_t fsg_store_removable(struct fsg_lun *curlun, const char *buf,
|
|
size_t count);
|
|
ssize_t fsg_store_inquiry_string(struct fsg_lun *curlun, const char *buf,
|
|
size_t count);
|
|
|
|
#endif /* USB_STORAGE_COMMON_H */
|