18c2ecf20Sopenharmony_ci/* SPDX-License-Identifier: GPL-2.0 */ 28c2ecf20Sopenharmony_ci#ifndef _SCSI_SCSI_EH_H 38c2ecf20Sopenharmony_ci#define _SCSI_SCSI_EH_H 48c2ecf20Sopenharmony_ci 58c2ecf20Sopenharmony_ci#include <linux/scatterlist.h> 68c2ecf20Sopenharmony_ci 78c2ecf20Sopenharmony_ci#include <scsi/scsi_cmnd.h> 88c2ecf20Sopenharmony_ci#include <scsi/scsi_common.h> 98c2ecf20Sopenharmony_cistruct scsi_device; 108c2ecf20Sopenharmony_cistruct Scsi_Host; 118c2ecf20Sopenharmony_ci 128c2ecf20Sopenharmony_ciextern void scsi_eh_finish_cmd(struct scsi_cmnd *scmd, 138c2ecf20Sopenharmony_ci struct list_head *done_q); 148c2ecf20Sopenharmony_ciextern void scsi_eh_flush_done_q(struct list_head *done_q); 158c2ecf20Sopenharmony_ciextern void scsi_report_bus_reset(struct Scsi_Host *, int); 168c2ecf20Sopenharmony_ciextern void scsi_report_device_reset(struct Scsi_Host *, int, int); 178c2ecf20Sopenharmony_ciextern int scsi_block_when_processing_errors(struct scsi_device *); 188c2ecf20Sopenharmony_ciextern bool scsi_command_normalize_sense(const struct scsi_cmnd *cmd, 198c2ecf20Sopenharmony_ci struct scsi_sense_hdr *sshdr); 208c2ecf20Sopenharmony_ciextern enum scsi_disposition scsi_check_sense(struct scsi_cmnd *); 218c2ecf20Sopenharmony_ci 228c2ecf20Sopenharmony_cistatic inline bool scsi_sense_is_deferred(const struct scsi_sense_hdr *sshdr) 238c2ecf20Sopenharmony_ci{ 248c2ecf20Sopenharmony_ci return ((sshdr->response_code >= 0x70) && (sshdr->response_code & 1)); 258c2ecf20Sopenharmony_ci} 268c2ecf20Sopenharmony_ci 278c2ecf20Sopenharmony_ciextern bool scsi_get_sense_info_fld(const u8 *sense_buffer, int sb_len, 288c2ecf20Sopenharmony_ci u64 *info_out); 298c2ecf20Sopenharmony_ci 308c2ecf20Sopenharmony_ciextern int scsi_ioctl_reset(struct scsi_device *, int __user *); 318c2ecf20Sopenharmony_ci 328c2ecf20Sopenharmony_cistruct scsi_eh_save { 338c2ecf20Sopenharmony_ci /* saved state */ 348c2ecf20Sopenharmony_ci int result; 358c2ecf20Sopenharmony_ci unsigned int resid_len; 368c2ecf20Sopenharmony_ci int eh_eflags; 378c2ecf20Sopenharmony_ci enum dma_data_direction data_direction; 388c2ecf20Sopenharmony_ci unsigned underflow; 398c2ecf20Sopenharmony_ci unsigned char cmd_len; 408c2ecf20Sopenharmony_ci unsigned char prot_op; 418c2ecf20Sopenharmony_ci unsigned char *cmnd; 428c2ecf20Sopenharmony_ci struct scsi_data_buffer sdb; 438c2ecf20Sopenharmony_ci /* new command support */ 448c2ecf20Sopenharmony_ci unsigned char eh_cmnd[BLK_MAX_CDB]; 458c2ecf20Sopenharmony_ci struct scatterlist sense_sgl; 468c2ecf20Sopenharmony_ci}; 478c2ecf20Sopenharmony_ci 488c2ecf20Sopenharmony_ciextern void scsi_eh_prep_cmnd(struct scsi_cmnd *scmd, 498c2ecf20Sopenharmony_ci struct scsi_eh_save *ses, unsigned char *cmnd, 508c2ecf20Sopenharmony_ci int cmnd_size, unsigned sense_bytes); 518c2ecf20Sopenharmony_ci 528c2ecf20Sopenharmony_ciextern void scsi_eh_restore_cmnd(struct scsi_cmnd* scmd, 538c2ecf20Sopenharmony_ci struct scsi_eh_save *ses); 548c2ecf20Sopenharmony_ci 558c2ecf20Sopenharmony_ci#endif /* _SCSI_SCSI_EH_H */ 56