scsi_priv.h (6622B)
1/* SPDX-License-Identifier: GPL-2.0 */ 2#ifndef _SCSI_PRIV_H 3#define _SCSI_PRIV_H 4 5#include <linux/device.h> 6#include <scsi/scsi_device.h> 7#include <linux/sbitmap.h> 8 9struct bsg_device; 10struct request_queue; 11struct request; 12struct scsi_cmnd; 13struct scsi_device; 14struct scsi_target; 15struct scsi_host_template; 16struct Scsi_Host; 17struct scsi_nl_hdr; 18 19#define SCSI_CMD_RETRIES_NO_LIMIT -1 20 21/* 22 * Scsi Error Handler Flags 23 */ 24#define SCSI_EH_ABORT_SCHEDULED 0x0002 /* Abort has been scheduled */ 25 26#define SCSI_SENSE_VALID(scmd) \ 27 (((scmd)->sense_buffer[0] & 0x70) == 0x70) 28 29/* hosts.c */ 30extern int scsi_init_hosts(void); 31extern void scsi_exit_hosts(void); 32 33/* scsi.c */ 34int scsi_init_sense_cache(struct Scsi_Host *shost); 35void scsi_init_command(struct scsi_device *dev, struct scsi_cmnd *cmd); 36#ifdef CONFIG_SCSI_LOGGING 37void scsi_log_send(struct scsi_cmnd *cmd); 38void scsi_log_completion(struct scsi_cmnd *cmd, int disposition); 39#else 40static inline void scsi_log_send(struct scsi_cmnd *cmd) 41 { }; 42static inline void scsi_log_completion(struct scsi_cmnd *cmd, int disposition) 43 { }; 44#endif 45 46/* scsi_devinfo.c */ 47 48/* list of keys for the lists */ 49enum scsi_devinfo_key { 50 SCSI_DEVINFO_GLOBAL = 0, 51 SCSI_DEVINFO_SPI, 52}; 53 54extern blist_flags_t scsi_get_device_flags(struct scsi_device *sdev, 55 const unsigned char *vendor, 56 const unsigned char *model); 57extern blist_flags_t scsi_get_device_flags_keyed(struct scsi_device *sdev, 58 const unsigned char *vendor, 59 const unsigned char *model, 60 enum scsi_devinfo_key key); 61extern int scsi_dev_info_list_add_keyed(int compatible, char *vendor, 62 char *model, char *strflags, 63 blist_flags_t flags, 64 enum scsi_devinfo_key key); 65extern int scsi_dev_info_list_del_keyed(char *vendor, char *model, 66 enum scsi_devinfo_key key); 67extern int scsi_dev_info_add_list(enum scsi_devinfo_key key, const char *name); 68extern int scsi_dev_info_remove_list(enum scsi_devinfo_key key); 69 70extern int __init scsi_init_devinfo(void); 71extern void scsi_exit_devinfo(void); 72 73/* scsi_error.c */ 74extern void scmd_eh_abort_handler(struct work_struct *work); 75extern enum blk_eh_timer_return scsi_times_out(struct request *req); 76extern int scsi_error_handler(void *host); 77extern enum scsi_disposition scsi_decide_disposition(struct scsi_cmnd *cmd); 78extern void scsi_eh_wakeup(struct Scsi_Host *shost); 79extern void scsi_eh_scmd_add(struct scsi_cmnd *); 80void scsi_eh_ready_devs(struct Scsi_Host *shost, 81 struct list_head *work_q, 82 struct list_head *done_q); 83int scsi_eh_get_sense(struct list_head *work_q, 84 struct list_head *done_q); 85int scsi_noretry_cmd(struct scsi_cmnd *scmd); 86void scsi_eh_done(struct scsi_cmnd *scmd); 87 88/* scsi_lib.c */ 89extern int scsi_maybe_unblock_host(struct scsi_device *sdev); 90extern void scsi_device_unbusy(struct scsi_device *sdev, struct scsi_cmnd *cmd); 91extern void scsi_queue_insert(struct scsi_cmnd *cmd, int reason); 92extern void scsi_io_completion(struct scsi_cmnd *, unsigned int); 93extern void scsi_run_host_queues(struct Scsi_Host *shost); 94extern void scsi_requeue_run_queue(struct work_struct *work); 95extern void scsi_start_queue(struct scsi_device *sdev); 96extern int scsi_mq_setup_tags(struct Scsi_Host *shost); 97extern void scsi_mq_destroy_tags(struct Scsi_Host *shost); 98extern void scsi_exit_queue(void); 99extern void scsi_evt_thread(struct work_struct *work); 100 101/* scsi_proc.c */ 102#ifdef CONFIG_SCSI_PROC_FS 103extern void scsi_proc_hostdir_add(struct scsi_host_template *); 104extern void scsi_proc_hostdir_rm(struct scsi_host_template *); 105extern void scsi_proc_host_add(struct Scsi_Host *); 106extern void scsi_proc_host_rm(struct Scsi_Host *); 107extern int scsi_init_procfs(void); 108extern void scsi_exit_procfs(void); 109#else 110# define scsi_proc_hostdir_add(sht) do { } while (0) 111# define scsi_proc_hostdir_rm(sht) do { } while (0) 112# define scsi_proc_host_add(shost) do { } while (0) 113# define scsi_proc_host_rm(shost) do { } while (0) 114# define scsi_init_procfs() (0) 115# define scsi_exit_procfs() do { } while (0) 116#endif /* CONFIG_PROC_FS */ 117 118/* scsi_scan.c */ 119void scsi_enable_async_suspend(struct device *dev); 120extern int scsi_complete_async_scans(void); 121extern int scsi_scan_host_selected(struct Scsi_Host *, unsigned int, 122 unsigned int, u64, enum scsi_scan_mode); 123extern void scsi_forget_host(struct Scsi_Host *); 124extern void scsi_rescan_device(struct device *); 125 126/* scsi_sysctl.c */ 127#ifdef CONFIG_SYSCTL 128extern int scsi_init_sysctl(void); 129extern void scsi_exit_sysctl(void); 130#else 131# define scsi_init_sysctl() (0) 132# define scsi_exit_sysctl() do { } while (0) 133#endif /* CONFIG_SYSCTL */ 134 135/* scsi_sysfs.c */ 136extern int scsi_sysfs_add_sdev(struct scsi_device *); 137extern int scsi_sysfs_add_host(struct Scsi_Host *); 138extern int scsi_sysfs_register(void); 139extern void scsi_sysfs_unregister(void); 140extern void scsi_sysfs_device_initialize(struct scsi_device *); 141extern int scsi_sysfs_target_initialize(struct scsi_device *); 142extern struct scsi_transport_template blank_transport_template; 143extern void __scsi_remove_device(struct scsi_device *); 144 145extern struct bus_type scsi_bus_type; 146extern const struct attribute_group *scsi_shost_groups[]; 147 148/* scsi_netlink.c */ 149#ifdef CONFIG_SCSI_NETLINK 150extern void scsi_netlink_init(void); 151extern void scsi_netlink_exit(void); 152extern struct sock *scsi_nl_sock; 153#else 154static inline void scsi_netlink_init(void) {} 155static inline void scsi_netlink_exit(void) {} 156#endif 157 158/* scsi_pm.c */ 159#ifdef CONFIG_PM 160extern const struct dev_pm_ops scsi_bus_pm_ops; 161 162extern void scsi_autopm_get_target(struct scsi_target *); 163extern void scsi_autopm_put_target(struct scsi_target *); 164extern int scsi_autopm_get_host(struct Scsi_Host *); 165extern void scsi_autopm_put_host(struct Scsi_Host *); 166#else 167static inline void scsi_autopm_get_target(struct scsi_target *t) {} 168static inline void scsi_autopm_put_target(struct scsi_target *t) {} 169static inline int scsi_autopm_get_host(struct Scsi_Host *h) { return 0; } 170static inline void scsi_autopm_put_host(struct Scsi_Host *h) {} 171#endif /* CONFIG_PM */ 172 173/* scsi_dh.c */ 174#ifdef CONFIG_SCSI_DH 175void scsi_dh_add_device(struct scsi_device *sdev); 176void scsi_dh_release_device(struct scsi_device *sdev); 177#else 178static inline void scsi_dh_add_device(struct scsi_device *sdev) { } 179static inline void scsi_dh_release_device(struct scsi_device *sdev) { } 180#endif 181 182struct bsg_device *scsi_bsg_register_queue(struct scsi_device *sdev); 183 184extern int scsi_device_max_queue_depth(struct scsi_device *sdev); 185 186/* 187 * internal scsi timeout functions: for use by mid-layer and transport 188 * classes. 189 */ 190 191#define SCSI_DEVICE_BLOCK_MAX_TIMEOUT 600 /* units in seconds */ 192 193#endif /* _SCSI_PRIV_H */