[PATCH] xtensa: Fix TIOCGICOUNT macro
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / include / scsi / scsi_eh.h
blobd160880b2a8798f18d3c0772ef84281e9d0bb6bc
1 #ifndef _SCSI_SCSI_EH_H
2 #define _SCSI_SCSI_EH_H
4 struct scsi_cmnd;
5 struct scsi_device;
6 struct scsi_request;
7 struct Scsi_Host;
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.
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).
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 */
29 static inline int scsi_sense_valid(struct scsi_sense_hdr *sshdr)
31 if (!sshdr)
32 return 0;
34 return (sshdr->response_code & 0x70) == 0x70;
38 extern void scsi_eh_finish_cmd(struct scsi_cmnd *scmd,
39 struct list_head *done_q);
40 extern void scsi_eh_flush_done_q(struct list_head *done_q);
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);
51 static inline int scsi_sense_is_deferred(struct scsi_sense_hdr *sshdr)
53 return ((sshdr->response_code >= 0x70) && (sshdr->response_code & 1));
56 extern const u8 * scsi_sense_desc_find(const u8 * sense_buffer, int sb_len,
57 int desc_type);
59 extern int scsi_get_sense_info_fld(const u8 * sense_buffer, int sb_len,
60 u64 * info_out);
63 * Reset request from external source
65 #define SCSI_TRY_RESET_DEVICE 1
66 #define SCSI_TRY_RESET_BUS 2
67 #define SCSI_TRY_RESET_HOST 3
69 extern int scsi_reset_provider(struct scsi_device *, int);
71 #endif /* _SCSI_SCSI_EH_H */