1 #ifndef _SCSI_SCSI_EH_H
2 #define _SCSI_SCSI_EH_H
4 #include <linux/scatterlist.h>
6 #include <scsi/scsi_cmnd.h>
11 * This is a slightly modified SCSI sense "descriptor" format header.
12 * The addition is to allow the 0x70 and 0x71 response codes. The idea
13 * is to place the salient data from either "fixed" or "descriptor" sense
14 * format into one structure to ease application processing.
16 * The original sense buffer should be kept around for those cases
17 * in which more information is required (e.g. the LBA of a MEDIUM ERROR).
19 struct scsi_sense_hdr { /* See SPC-3 section 4.5 */
20 u8 response_code; /* permit: 0x0, 0x70, 0x71, 0x72, 0x73 */
27 u8 additional_length; /* always 0 for fixed sense format */
30 static inline int scsi_sense_valid(struct scsi_sense_hdr *sshdr)
35 return (sshdr->response_code & 0x70) == 0x70;
39 extern void scsi_eh_finish_cmd(struct scsi_cmnd *scmd,
40 struct list_head *done_q);
41 extern void scsi_eh_flush_done_q(struct list_head *done_q);
42 extern void scsi_report_bus_reset(struct Scsi_Host *, int);
43 extern void scsi_report_device_reset(struct Scsi_Host *, int, int);
44 extern int scsi_block_when_processing_errors(struct scsi_device *);
45 extern int scsi_normalize_sense(const u8 *sense_buffer, int sb_len,
46 struct scsi_sense_hdr *sshdr);
47 extern int scsi_command_normalize_sense(struct scsi_cmnd *cmd,
48 struct scsi_sense_hdr *sshdr);
50 static inline int scsi_sense_is_deferred(struct scsi_sense_hdr *sshdr)
52 return ((sshdr->response_code >= 0x70) && (sshdr->response_code & 1));
55 extern const u8 * scsi_sense_desc_find(const u8 * sense_buffer, int sb_len,
58 extern int scsi_get_sense_info_fld(const u8 * sense_buffer, int sb_len,
61 extern void scsi_build_sense_buffer(int desc, u8 *buf, u8 key, u8 asc, u8 ascq);
64 * Reset request from external source
66 #define SCSI_TRY_RESET_DEVICE 1
67 #define SCSI_TRY_RESET_BUS 2
68 #define SCSI_TRY_RESET_HOST 3
69 #define SCSI_TRY_RESET_TARGET 4
71 extern int scsi_reset_provider(struct scsi_device *, int);
76 enum dma_data_direction data_direction;
77 unsigned char cmd_len;
78 unsigned char cmnd[MAX_COMMAND_SIZE];
79 struct scsi_data_buffer sdb;
80 struct request *next_rq;
82 /* new command support */
83 struct scatterlist sense_sgl;
86 extern void scsi_eh_prep_cmnd(struct scsi_cmnd *scmd,
87 struct scsi_eh_save *ses, unsigned char *cmnd,
88 int cmnd_size, unsigned sense_bytes);
90 extern void scsi_eh_restore_cmnd(struct scsi_cmnd* scmd,
91 struct scsi_eh_save *ses);
93 #endif /* _SCSI_SCSI_EH_H */