1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef _SCSI_SCSI_EH_H 3 #define _SCSI_SCSI_EH_H 4 5 #include <linux/scatterlist.h> 6 7 #include <scsi/scsi_cmnd.h> 8 #include <scsi/scsi_common.h> 9 struct scsi_device; 10 struct Scsi_Host; 11 12 extern void scsi_eh_finish_cmd(struct scsi_cmnd *scmd, 13 struct list_head *done_q); 14 extern void scsi_eh_flush_done_q(struct list_head *done_q); 15 extern void scsi_report_bus_reset(struct Scsi_Host *, int); 16 extern void scsi_report_device_reset(struct Scsi_Host *, int, int); 17 extern int scsi_block_when_processing_errors(struct scsi_device *); 18 extern bool scsi_command_normalize_sense(const struct scsi_cmnd *cmd, 19 struct scsi_sense_hdr *sshdr); 20 extern enum scsi_disposition scsi_check_sense(struct scsi_cmnd *); 21 22 static inline bool scsi_sense_is_deferred(const struct scsi_sense_hdr *sshdr) 23 { 24 return ((sshdr->response_code >= 0x70) && (sshdr->response_code & 1)); 25 } 26 27 extern bool scsi_get_sense_info_fld(const u8 *sense_buffer, int sb_len, 28 u64 *info_out); 29 30 extern int scsi_ioctl_reset(struct scsi_device *, int __user *); 31 32 struct scsi_eh_save { 33 /* saved state */ 34 int result; 35 unsigned int resid_len; 36 int eh_eflags; 37 enum dma_data_direction data_direction; 38 unsigned underflow; 39 unsigned char cmd_len; 40 unsigned char prot_op; 41 unsigned char *cmnd; 42 struct scsi_data_buffer sdb; 43 /* new command support */ 44 unsigned char eh_cmnd[BLK_MAX_CDB]; 45 struct scatterlist sense_sgl; 46 }; 47 48 extern void scsi_eh_prep_cmnd(struct scsi_cmnd *scmd, 49 struct scsi_eh_save *ses, unsigned char *cmnd, 50 int cmnd_size, unsigned sense_bytes); 51 52 extern void scsi_eh_restore_cmnd(struct scsi_cmnd* scmd, 53 struct scsi_eh_save *ses); 54 55 #endif /* _SCSI_SCSI_EH_H */ 56