Contributors: 18
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| James Bottomley |
92 |
23.12% |
4 |
14.29% |
| Boaz Harrosh |
86 |
21.61% |
1 |
3.57% |
| Michael Christie |
49 |
12.31% |
2 |
7.14% |
| Hannes Reinecke |
28 |
7.04% |
4 |
14.29% |
| Bart Van Assche |
26 |
6.53% |
3 |
10.71% |
| FUJITA Tomonori |
21 |
5.28% |
1 |
3.57% |
| James Smart |
15 |
3.77% |
1 |
3.57% |
| Roman Bolshakov |
14 |
3.52% |
1 |
3.57% |
| David Disseldorp |
12 |
3.02% |
1 |
3.57% |
| Sagi Grimberg |
12 |
3.02% |
2 |
7.14% |
| Martin K. Petersen |
10 |
2.51% |
1 |
3.57% |
| Matthew Wilcox |
10 |
2.51% |
1 |
3.57% |
| Douglas Gilbert |
9 |
2.26% |
1 |
3.57% |
| Linus Torvalds (pre-git) |
4 |
1.01% |
1 |
3.57% |
| Linus Torvalds |
4 |
1.01% |
1 |
3.57% |
| Christof Schmitt |
3 |
0.75% |
1 |
3.57% |
| Subhash Jadavani |
2 |
0.50% |
1 |
3.57% |
| Greg Kroah-Hartman |
1 |
0.25% |
1 |
3.57% |
| Total |
398 |
|
28 |
|
/* SPDX-License-Identifier: GPL-2.0 */
/*
* Functions used by both the SCSI initiator code and the SCSI target code.
*/
#ifndef _SCSI_COMMON_H_
#define _SCSI_COMMON_H_
#include <linux/types.h>
#include <uapi/linux/pr.h>
#include <scsi/scsi_proto.h>
/* From the standard INQUIRY data description in SPC-6. */
#define INQUIRY_VENDOR_OFFSET 8
#define INQUIRY_VENDOR_LEN 8
#define INQUIRY_MODEL_OFFSET 16
#define INQUIRY_MODEL_LEN 16
#define INQUIRY_REVISION_OFFSET 32
#define INQUIRY_REVISION_LEN 4
enum scsi_pr_type {
SCSI_PR_WRITE_EXCLUSIVE = 0x01,
SCSI_PR_EXCLUSIVE_ACCESS = 0x03,
SCSI_PR_WRITE_EXCLUSIVE_REG_ONLY = 0x05,
SCSI_PR_EXCLUSIVE_ACCESS_REG_ONLY = 0x06,
SCSI_PR_WRITE_EXCLUSIVE_ALL_REGS = 0x07,
SCSI_PR_EXCLUSIVE_ACCESS_ALL_REGS = 0x08,
};
enum scsi_pr_type block_pr_type_to_scsi(enum pr_type type);
enum pr_type scsi_pr_type_to_block(enum scsi_pr_type type);
static inline unsigned
scsi_varlen_cdb_length(const void *hdr)
{
return ((struct scsi_varlen_cdb_hdr *)hdr)->additional_cdb_length + 8;
}
extern const unsigned char scsi_command_size_tbl[8];
#define COMMAND_SIZE(opcode) scsi_command_size_tbl[((opcode) >> 5) & 7]
static inline unsigned
scsi_command_size(const unsigned char *cmnd)
{
return (cmnd[0] == VARIABLE_LENGTH_CMD) ?
scsi_varlen_cdb_length(cmnd) : COMMAND_SIZE(cmnd[0]);
}
static inline unsigned char
scsi_command_control(const unsigned char *cmnd)
{
return (cmnd[0] == VARIABLE_LENGTH_CMD) ?
cmnd[1] : cmnd[COMMAND_SIZE(cmnd[0]) - 1];
}
/* Returns a human-readable name for the device */
extern const char *scsi_device_type(unsigned type);
extern void int_to_scsilun(u64, struct scsi_lun *);
extern u64 scsilun_to_int(struct scsi_lun *);
/*
* This is a slightly modified SCSI sense "descriptor" format header.
* The addition is to allow the 0x70 and 0x71 response codes. The idea
* is to place the salient data from either "fixed" or "descriptor" sense
* format into one structure to ease application processing.
*
* The original sense buffer should be kept around for those cases
* in which more information is required (e.g. the LBA of a MEDIUM ERROR).
*/
struct scsi_sense_hdr { /* See SPC-3 section 4.5 */
u8 response_code; /* permit: 0x0, 0x70, 0x71, 0x72, 0x73 */
u8 sense_key;
u8 asc;
u8 ascq;
u8 byte4;
u8 byte5;
u8 byte6;
u8 additional_length; /* always 0 for fixed sense format */
};
static inline bool scsi_sense_valid(const struct scsi_sense_hdr *sshdr)
{
if (!sshdr)
return false;
return (sshdr->response_code & 0x70) == 0x70;
}
extern bool scsi_normalize_sense(const u8 *sense_buffer, int sb_len,
struct scsi_sense_hdr *sshdr);
extern void scsi_build_sense_buffer(int desc, u8 *buf, u8 key, u8 asc, u8 ascq);
int scsi_set_sense_information(u8 *buf, int buf_len, u64 info);
int scsi_set_sense_field_pointer(u8 *buf, int buf_len, u16 fp, u8 bp, bool cd);
extern const u8 * scsi_sense_desc_find(const u8 * sense_buffer, int sb_len,
int desc_type);
#endif /* _SCSI_COMMON_H_ */