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1da177e4 LT |
1 | #ifndef _SCSI_SCSI_EH_H |
2 | #define _SCSI_SCSI_EH_H | |
3 | ||
4 | struct scsi_cmnd; | |
5 | struct scsi_device; | |
6 | struct scsi_request; | |
7 | struct Scsi_Host; | |
8 | ||
9 | /* | |
10 | * This is a slightly modified SCSI sense "descriptor" format header. | |
11 | * The addition is to allow the 0x70 and 0x71 response codes. The idea | |
12 | * is to place the salient data from either "fixed" or "descriptor" sense | |
13 | * format into one structure to ease application processing. | |
14 | * | |
15 | * The original sense buffer should be kept around for those cases | |
16 | * in which more information is required (e.g. the LBA of a MEDIUM ERROR). | |
17 | */ | |
18 | struct scsi_sense_hdr { /* See SPC-3 section 4.5 */ | |
19 | u8 response_code; /* permit: 0x0, 0x70, 0x71, 0x72, 0x73 */ | |
20 | u8 sense_key; | |
21 | u8 asc; | |
22 | u8 ascq; | |
23 | u8 byte4; | |
24 | u8 byte5; | |
25 | u8 byte6; | |
26 | u8 additional_length; /* always 0 for fixed sense format */ | |
27 | }; | |
28 | ||
33aa687d JB |
29 | static inline int scsi_sense_valid(struct scsi_sense_hdr *sshdr) |
30 | { | |
31 | if (!sshdr) | |
32 | return 0; | |
33 | ||
34 | return (sshdr->response_code & 0x70) == 0x70; | |
35 | } | |
36 | ||
1da177e4 | 37 | |
1da177e4 LT |
38 | extern void scsi_report_bus_reset(struct Scsi_Host *, int); |
39 | extern void scsi_report_device_reset(struct Scsi_Host *, int, int); | |
40 | extern int scsi_block_when_processing_errors(struct scsi_device *); | |
41 | extern int scsi_normalize_sense(const u8 *sense_buffer, int sb_len, | |
42 | struct scsi_sense_hdr *sshdr); | |
43 | extern int scsi_request_normalize_sense(struct scsi_request *sreq, | |
44 | struct scsi_sense_hdr *sshdr); | |
45 | extern int scsi_command_normalize_sense(struct scsi_cmnd *cmd, | |
46 | struct scsi_sense_hdr *sshdr); | |
47 | ||
48 | static inline int scsi_sense_is_deferred(struct scsi_sense_hdr *sshdr) | |
49 | { | |
50 | return ((sshdr->response_code >= 0x70) && (sshdr->response_code & 1)); | |
51 | } | |
52 | ||
53 | extern const u8 * scsi_sense_desc_find(const u8 * sense_buffer, int sb_len, | |
54 | int desc_type); | |
55 | ||
56 | extern int scsi_get_sense_info_fld(const u8 * sense_buffer, int sb_len, | |
57 | u64 * info_out); | |
58 | ||
59 | /* | |
60 | * Reset request from external source | |
61 | */ | |
62 | #define SCSI_TRY_RESET_DEVICE 1 | |
63 | #define SCSI_TRY_RESET_BUS 2 | |
64 | #define SCSI_TRY_RESET_HOST 3 | |
65 | ||
66 | extern int scsi_reset_provider(struct scsi_device *, int); | |
67 | ||
68 | #endif /* _SCSI_SCSI_EH_H */ |