forked from luck/tmp_suning_uos_patched
5d9fb5cc1b
This has scsi_internal_device_unblock/scsi_target_unblock take the new state to set the devices as an argument instead of always setting to running. The patch also converts users of these functions. This allows the FC and iSCSI class to transition devices from blocked to transport-offline, so that when fast_io_fail/replacement_timeout has fired we do not set the devices back to running. Instead, we set them to SDEV_TRANSPORT_OFFLINE. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
180 lines
5.9 KiB
C
180 lines
5.9 KiB
C
#ifndef _SCSI_PRIV_H
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#define _SCSI_PRIV_H
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#include <linux/device.h>
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#include <scsi/scsi_device.h>
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struct request_queue;
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struct request;
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struct scsi_cmnd;
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struct scsi_device;
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struct scsi_target;
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struct scsi_host_template;
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struct Scsi_Host;
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struct scsi_nl_hdr;
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/*
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* Scsi Error Handler Flags
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*/
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#define SCSI_EH_CANCEL_CMD 0x0001 /* Cancel this cmd */
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#define SCSI_SENSE_VALID(scmd) \
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(((scmd)->sense_buffer[0] & 0x70) == 0x70)
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/* hosts.c */
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extern int scsi_init_hosts(void);
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extern void scsi_exit_hosts(void);
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/* scsi.c */
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extern int scsi_dispatch_cmd(struct scsi_cmnd *cmd);
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extern int scsi_setup_command_freelist(struct Scsi_Host *shost);
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extern void scsi_destroy_command_freelist(struct Scsi_Host *shost);
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#ifdef CONFIG_SCSI_LOGGING
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void scsi_log_send(struct scsi_cmnd *cmd);
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void scsi_log_completion(struct scsi_cmnd *cmd, int disposition);
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#else
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static inline void scsi_log_send(struct scsi_cmnd *cmd)
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{ };
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static inline void scsi_log_completion(struct scsi_cmnd *cmd, int disposition)
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{ };
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#endif
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/* scsi_devinfo.c */
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/* list of keys for the lists */
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enum {
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SCSI_DEVINFO_GLOBAL = 0,
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SCSI_DEVINFO_SPI,
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};
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extern int scsi_get_device_flags(struct scsi_device *sdev,
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const unsigned char *vendor,
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const unsigned char *model);
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extern int scsi_get_device_flags_keyed(struct scsi_device *sdev,
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const unsigned char *vendor,
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const unsigned char *model, int key);
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extern int scsi_dev_info_list_add_keyed(int compatible, char *vendor,
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char *model, char *strflags,
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int flags, int key);
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extern int scsi_dev_info_list_del_keyed(char *vendor, char *model, int key);
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extern int scsi_dev_info_add_list(int key, const char *name);
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extern int scsi_dev_info_remove_list(int key);
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extern int __init scsi_init_devinfo(void);
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extern void scsi_exit_devinfo(void);
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/* scsi_error.c */
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extern enum blk_eh_timer_return scsi_times_out(struct request *req);
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extern int scsi_error_handler(void *host);
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extern int scsi_decide_disposition(struct scsi_cmnd *cmd);
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extern void scsi_eh_wakeup(struct Scsi_Host *shost);
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extern int scsi_eh_scmd_add(struct scsi_cmnd *, int);
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void scsi_eh_ready_devs(struct Scsi_Host *shost,
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struct list_head *work_q,
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struct list_head *done_q);
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int scsi_eh_get_sense(struct list_head *work_q,
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struct list_head *done_q);
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int scsi_noretry_cmd(struct scsi_cmnd *scmd);
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/* scsi_lib.c */
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extern int scsi_maybe_unblock_host(struct scsi_device *sdev);
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extern void scsi_device_unbusy(struct scsi_device *sdev);
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extern int scsi_queue_insert(struct scsi_cmnd *cmd, int reason);
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extern void scsi_next_command(struct scsi_cmnd *cmd);
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extern void scsi_io_completion(struct scsi_cmnd *, unsigned int);
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extern void scsi_run_host_queues(struct Scsi_Host *shost);
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extern struct request_queue *scsi_alloc_queue(struct scsi_device *sdev);
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extern void scsi_free_queue(struct request_queue *q);
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extern int scsi_init_queue(void);
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extern void scsi_exit_queue(void);
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struct request_queue;
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struct request;
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extern struct kmem_cache *scsi_sdb_cache;
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/* scsi_proc.c */
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#ifdef CONFIG_SCSI_PROC_FS
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extern void scsi_proc_hostdir_add(struct scsi_host_template *);
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extern void scsi_proc_hostdir_rm(struct scsi_host_template *);
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extern void scsi_proc_host_add(struct Scsi_Host *);
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extern void scsi_proc_host_rm(struct Scsi_Host *);
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extern int scsi_init_procfs(void);
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extern void scsi_exit_procfs(void);
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#else
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# define scsi_proc_hostdir_add(sht) do { } while (0)
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# define scsi_proc_hostdir_rm(sht) do { } while (0)
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# define scsi_proc_host_add(shost) do { } while (0)
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# define scsi_proc_host_rm(shost) do { } while (0)
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# define scsi_init_procfs() (0)
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# define scsi_exit_procfs() do { } while (0)
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#endif /* CONFIG_PROC_FS */
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/* scsi_scan.c */
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extern int scsi_complete_async_scans(void);
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extern int scsi_scan_host_selected(struct Scsi_Host *, unsigned int,
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unsigned int, unsigned int, int);
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extern void scsi_forget_host(struct Scsi_Host *);
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extern void scsi_rescan_device(struct device *);
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/* scsi_sysctl.c */
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#ifdef CONFIG_SYSCTL
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extern int scsi_init_sysctl(void);
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extern void scsi_exit_sysctl(void);
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#else
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# define scsi_init_sysctl() (0)
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# define scsi_exit_sysctl() do { } while (0)
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#endif /* CONFIG_SYSCTL */
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/* scsi_sysfs.c */
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extern int scsi_sysfs_add_sdev(struct scsi_device *);
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extern int scsi_sysfs_add_host(struct Scsi_Host *);
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extern int scsi_sysfs_register(void);
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extern void scsi_sysfs_unregister(void);
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extern void scsi_sysfs_device_initialize(struct scsi_device *);
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extern int scsi_sysfs_target_initialize(struct scsi_device *);
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extern struct scsi_transport_template blank_transport_template;
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extern void __scsi_remove_device(struct scsi_device *);
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extern struct bus_type scsi_bus_type;
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extern const struct attribute_group *scsi_sysfs_shost_attr_groups[];
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/* scsi_netlink.c */
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#ifdef CONFIG_SCSI_NETLINK
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extern void scsi_netlink_init(void);
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extern void scsi_netlink_exit(void);
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extern struct sock *scsi_nl_sock;
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#else
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static inline void scsi_netlink_init(void) {}
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static inline void scsi_netlink_exit(void) {}
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#endif
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/* scsi_pm.c */
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#ifdef CONFIG_PM
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extern const struct dev_pm_ops scsi_bus_pm_ops;
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#endif
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#ifdef CONFIG_PM_RUNTIME
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extern void scsi_autopm_get_target(struct scsi_target *);
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extern void scsi_autopm_put_target(struct scsi_target *);
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extern int scsi_autopm_get_host(struct Scsi_Host *);
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extern void scsi_autopm_put_host(struct Scsi_Host *);
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#else
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static inline void scsi_autopm_get_target(struct scsi_target *t) {}
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static inline void scsi_autopm_put_target(struct scsi_target *t) {}
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static inline int scsi_autopm_get_host(struct Scsi_Host *h) { return 0; }
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static inline void scsi_autopm_put_host(struct Scsi_Host *h) {}
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#endif /* CONFIG_PM_RUNTIME */
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extern struct list_head scsi_sd_probe_domain;
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/*
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* internal scsi timeout functions: for use by mid-layer and transport
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* classes.
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*/
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#define SCSI_DEVICE_BLOCK_MAX_TIMEOUT 600 /* units in seconds */
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extern int scsi_internal_device_block(struct scsi_device *sdev);
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extern int scsi_internal_device_unblock(struct scsi_device *sdev,
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enum scsi_device_state new_state);
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#endif /* _SCSI_PRIV_H */
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