| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
| James Bottomley | 33aa687 | 2005-08-28 11:31:14 -0500 | [diff] [blame^] | 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 | |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 37 | |
| 38 | extern void scsi_add_timer(struct scsi_cmnd *, int, |
| 39 | void (*)(struct scsi_cmnd *)); |
| 40 | extern int scsi_delete_timer(struct scsi_cmnd *); |
| 41 | extern void scsi_report_bus_reset(struct Scsi_Host *, int); |
| 42 | extern void scsi_report_device_reset(struct Scsi_Host *, int, int); |
| 43 | extern int scsi_block_when_processing_errors(struct scsi_device *); |
| 44 | extern int scsi_normalize_sense(const u8 *sense_buffer, int sb_len, |
| 45 | struct scsi_sense_hdr *sshdr); |
| 46 | extern int scsi_request_normalize_sense(struct scsi_request *sreq, |
| 47 | struct scsi_sense_hdr *sshdr); |
| 48 | extern int scsi_command_normalize_sense(struct scsi_cmnd *cmd, |
| 49 | struct scsi_sense_hdr *sshdr); |
| 50 | |
| 51 | static inline int scsi_sense_is_deferred(struct scsi_sense_hdr *sshdr) |
| 52 | { |
| 53 | return ((sshdr->response_code >= 0x70) && (sshdr->response_code & 1)); |
| 54 | } |
| 55 | |
| 56 | extern const u8 * scsi_sense_desc_find(const u8 * sense_buffer, int sb_len, |
| 57 | int desc_type); |
| 58 | |
| 59 | extern int scsi_get_sense_info_fld(const u8 * sense_buffer, int sb_len, |
| 60 | u64 * info_out); |
| 61 | |
| 62 | /* |
| 63 | * Reset request from external source |
| 64 | */ |
| 65 | #define SCSI_TRY_RESET_DEVICE 1 |
| 66 | #define SCSI_TRY_RESET_BUS 2 |
| 67 | #define SCSI_TRY_RESET_HOST 3 |
| 68 | |
| 69 | extern int scsi_reset_provider(struct scsi_device *, int); |
| 70 | |
| 71 | #endif /* _SCSI_SCSI_EH_H */ |