projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
1 | #ifndef _SCSI_SCSI_EH_H |
| 2 | #define _SCSI_SCSI_EH_H | |
| 3 | ||
| 645a0c6c JB |
4 | #include <linux/scatterlist.h> |
| 5 | ||
| e1c23468 | 6 | #include <scsi/scsi_cmnd.h> |
| 1da177e4 | 7 | struct scsi_device; |
| 1da177e4 LT |
8 | struct Scsi_Host; |
| 9 | ||
| 10 | /* | |
| 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. | |
| 15 | * | |
| 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). | |
| 18 | */ | |
| 19 | struct scsi_sense_hdr { /* See SPC-3 section 4.5 */ | |
| 20 | u8 response_code; /* permit: 0x0, 0x70, 0x71, 0x72, 0x73 */ | |
| 21 | u8 sense_key; | |
| 22 | u8 asc; | |
| 23 | u8 ascq; | |
| 24 | u8 byte4; | |
| 25 | u8 byte5; | |
| 26 | u8 byte6; | |
| 27 | u8 additional_length; /* always 0 for fixed sense format */ | |
| 28 | }; | |
| 29 | ||
| 33aa687d JB |
30 | static inline int scsi_sense_valid(struct scsi_sense_hdr *sshdr) |
| 31 | { | |
| 32 | if (!sshdr) | |
| 33 | return 0; | |
| 34 | ||
| 35 | return (sshdr->response_code & 0x70) == 0x70; | |
| 36 | } | |
| 37 | ||
| 1da177e4 | 38 | |
| 041c5fc3 TH |
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); | |
| 1da177e4 LT |
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); | |
| 1da177e4 LT |
47 | extern int scsi_command_normalize_sense(struct scsi_cmnd *cmd, |
| 48 | struct scsi_sense_hdr *sshdr); | |
| 49 | ||
| 50 | static inline int scsi_sense_is_deferred(struct scsi_sense_hdr *sshdr) | |
| 51 | { | |
| 52 | return ((sshdr->response_code >= 0x70) && (sshdr->response_code & 1)); | |
| 53 | } | |
| 54 | ||
| 55 | extern const u8 * scsi_sense_desc_find(const u8 * sense_buffer, int sb_len, | |
| 56 | int desc_type); | |
| 57 | ||
| 58 | extern int scsi_get_sense_info_fld(const u8 * sense_buffer, int sb_len, | |
| 59 | u64 * info_out); | |
| 3bc6a261 FT |
60 | |
| 61 | extern void scsi_build_sense_buffer(int desc, u8 *buf, u8 key, u8 asc, u8 ascq); | |
| 62 | ||
| 1da177e4 LT |
63 | /* |
| 64 | * Reset request from external source | |
| 65 | */ | |
| 66 | #define SCSI_TRY_RESET_DEVICE 1 | |
| 67 | #define SCSI_TRY_RESET_BUS 2 | |
| 68 | #define SCSI_TRY_RESET_HOST 3 | |
| 30bd7df8 | 69 | #define SCSI_TRY_RESET_TARGET 4 |
| 1da177e4 LT |
70 | |
| 71 | extern int scsi_reset_provider(struct scsi_device *, int); | |
| 72 | ||
| e1c23468 | 73 | struct scsi_eh_save { |
| 30b0c37b | 74 | /* saved state */ |
| e1c23468 BH |
75 | int result; |
| 76 | enum dma_data_direction data_direction; | |
| 12265709 | 77 | unsigned underflow; |
| e1c23468 | 78 | unsigned char cmd_len; |
| db007fc5 | 79 | unsigned char prot_op; |
| 64a87b24 | 80 | unsigned char *cmnd; |
| 30b0c37b | 81 | struct scsi_data_buffer sdb; |
| 6f9a35e2 | 82 | struct request *next_rq; |
| 30b0c37b | 83 | /* new command support */ |
| 64a87b24 | 84 | unsigned char eh_cmnd[BLK_MAX_CDB]; |
| e1c23468 BH |
85 | struct scatterlist sense_sgl; |
| 86 | }; | |
| 87 | ||
| 88 | extern void scsi_eh_prep_cmnd(struct scsi_cmnd *scmd, | |
| 89 | struct scsi_eh_save *ses, unsigned char *cmnd, | |
| 90 | int cmnd_size, unsigned sense_bytes); | |
| 91 | ||
| 92 | extern void scsi_eh_restore_cmnd(struct scsi_cmnd* scmd, | |
| 93 | struct scsi_eh_save *ses); | |
| 94 | ||
| 1da177e4 | 95 | #endif /* _SCSI_SCSI_EH_H */ |