projects / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
1 | #ifndef _SCSI_SCSI_EH_H |
| 2 | #define _SCSI_SCSI_EH_H | |
| 3 | ||
| 4 | struct scsi_cmnd; | |
| 5 | struct scsi_device; | |
| 1da177e4 LT |
6 | struct Scsi_Host; |
| 7 | ||
| 8 | /* | |
| 9 | * This is a slightly modified SCSI sense "descriptor" format header. | |
| 10 | * The addition is to allow the 0x70 and 0x71 response codes. The idea | |
| 11 | * is to place the salient data from either "fixed" or "descriptor" sense | |
| 12 | * format into one structure to ease application processing. | |
| 13 | * | |
| 14 | * The original sense buffer should be kept around for those cases | |
| 15 | * in which more information is required (e.g. the LBA of a MEDIUM ERROR). | |
| 16 | */ | |
| 17 | struct scsi_sense_hdr { /* See SPC-3 section 4.5 */ | |
| 18 | u8 response_code; /* permit: 0x0, 0x70, 0x71, 0x72, 0x73 */ | |
| 19 | u8 sense_key; | |
| 20 | u8 asc; | |
| 21 | u8 ascq; | |
| 22 | u8 byte4; | |
| 23 | u8 byte5; | |
| 24 | u8 byte6; | |
| 25 | u8 additional_length; /* always 0 for fixed sense format */ | |
| 26 | }; | |
| 27 | ||
| 33aa687d JB |
28 | static inline int scsi_sense_valid(struct scsi_sense_hdr *sshdr) |
| 29 | { | |
| 30 | if (!sshdr) | |
| 31 | return 0; | |
| 32 | ||
| 33 | return (sshdr->response_code & 0x70) == 0x70; | |
| 34 | } | |
| 35 | ||
| 1da177e4 | 36 | |
| 041c5fc3 TH |
37 | extern void scsi_eh_finish_cmd(struct scsi_cmnd *scmd, |
| 38 | struct list_head *done_q); | |
| 39 | extern void scsi_eh_flush_done_q(struct list_head *done_q); | |
| 1da177e4 LT |
40 | extern void scsi_report_bus_reset(struct Scsi_Host *, int); |
| 41 | extern void scsi_report_device_reset(struct Scsi_Host *, int, int); | |
| 42 | extern int scsi_block_when_processing_errors(struct scsi_device *); | |
| 43 | extern int scsi_normalize_sense(const u8 *sense_buffer, int sb_len, | |
| 44 | struct scsi_sense_hdr *sshdr); | |
| 1da177e4 LT |
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 */ |