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 9 struct bsg_device; 10 struct request_queue; 11 struct request; 12 struct scsi_cmnd; 13 struct scsi_device; 14 struct scsi_target; 15 struct scsi_host_template; 16 struct Scsi_Host; 17 struct 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 */ 30 extern int scsi_init_hosts(void); 31 extern void scsi_exit_hosts(void); 32 33 /* scsi.c */ 34 int scsi_init_sense_cache(struct Scsi_Host *shost); 35 void scsi_init_command(struct scsi_device *dev, struct scsi_cmnd *cmd); 36 #ifdef CONFIG_SCSI_LOGGING 37 void scsi_log_send(struct scsi_cmnd *cmd); 38 void scsi_log_completion(struct scsi_cmnd *cmd, int disposition); 39 #else 40 static inline void scsi_log_send(struct scsi_cmnd *cmd) 41 { }; 42 static 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 */ 49 enum scsi_devinfo_key { 50 SCSI_DEVINFO_GLOBAL = 0, 51 SCSI_DEVINFO_SPI, 52 }; 53 54 extern blist_flags_t scsi_get_device_flags(struct scsi_device *sdev, 55 const unsigned char *vendor, 56 const unsigned char *model); 57 extern 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); 61 extern 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); 65 extern int scsi_dev_info_list_del_keyed(char *vendor, char *model, 66 enum scsi_devinfo_key key); 67 extern int scsi_dev_info_add_list(enum scsi_devinfo_key key, const char *name); 68 extern int scsi_dev_info_remove_list(enum scsi_devinfo_key key); 69 70 extern int __init scsi_init_devinfo(void); 71 extern void scsi_exit_devinfo(void); 72 73 /* scsi_error.c */ 74 extern void scmd_eh_abort_handler(struct work_struct *work); 75 extern enum blk_eh_timer_return scsi_times_out(struct request *req); 76 extern int scsi_error_handler(void *host); 77 extern enum scsi_disposition scsi_decide_disposition(struct scsi_cmnd *cmd); 78 extern void scsi_eh_wakeup(struct Scsi_Host *shost); 79 extern void scsi_eh_scmd_add(struct scsi_cmnd *); 80 void scsi_eh_ready_devs(struct Scsi_Host *shost, 81 struct list_head *work_q, 82 struct list_head *done_q); 83 int scsi_eh_get_sense(struct list_head *work_q, 84 struct list_head *done_q); 85 int scsi_noretry_cmd(struct scsi_cmnd *scmd); 86 void scsi_eh_done(struct scsi_cmnd *scmd); 87 88 /* scsi_lib.c */ 89 extern int scsi_maybe_unblock_host(struct scsi_device *sdev); 90 extern void scsi_device_unbusy(struct scsi_device *sdev, struct scsi_cmnd *cmd); 91 extern void scsi_queue_insert(struct scsi_cmnd *cmd, int reason); 92 extern void scsi_io_completion(struct scsi_cmnd *, unsigned int); 93 extern void scsi_run_host_queues(struct Scsi_Host *shost); 94 extern void scsi_requeue_run_queue(struct work_struct *work); 95 extern void scsi_start_queue(struct scsi_device *sdev); 96 extern int scsi_mq_setup_tags(struct Scsi_Host *shost); 97 extern void scsi_mq_destroy_tags(struct Scsi_Host *shost); 98 extern void scsi_exit_queue(void); 99 extern void scsi_evt_thread(struct work_struct *work); 100 101 /* scsi_proc.c */ 102 #ifdef CONFIG_SCSI_PROC_FS 103 extern void scsi_proc_hostdir_add(struct scsi_host_template *); 104 extern void scsi_proc_hostdir_rm(struct scsi_host_template *); 105 extern void scsi_proc_host_add(struct Scsi_Host *); 106 extern void scsi_proc_host_rm(struct Scsi_Host *); 107 extern int scsi_init_procfs(void); 108 extern 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 */ 119 void scsi_enable_async_suspend(struct device *dev); 120 extern int scsi_complete_async_scans(void); 121 extern int scsi_scan_host_selected(struct Scsi_Host *, unsigned int, 122 unsigned int, u64, enum scsi_scan_mode); 123 extern void scsi_forget_host(struct Scsi_Host *); 124 extern void scsi_rescan_device(struct device *); 125 126 /* scsi_sysctl.c */ 127 #ifdef CONFIG_SYSCTL 128 extern int scsi_init_sysctl(void); 129 extern 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 */ 136 extern int scsi_sysfs_add_sdev(struct scsi_device *); 137 extern int scsi_sysfs_add_host(struct Scsi_Host *); 138 extern int scsi_sysfs_register(void); 139 extern void scsi_sysfs_unregister(void); 140 extern void scsi_sysfs_device_initialize(struct scsi_device *); 141 extern int scsi_sysfs_target_initialize(struct scsi_device *); 142 extern struct scsi_transport_template blank_transport_template; 143 extern void __scsi_remove_device(struct scsi_device *); 144 145 extern struct bus_type scsi_bus_type; 146 extern const struct attribute_group *scsi_shost_groups[]; 147 148 /* scsi_netlink.c */ 149 #ifdef CONFIG_SCSI_NETLINK 150 extern void scsi_netlink_init(void); 151 extern void scsi_netlink_exit(void); 152 extern struct sock *scsi_nl_sock; 153 #else 154 static inline void scsi_netlink_init(void) {} 155 static inline void scsi_netlink_exit(void) {} 156 #endif 157 158 /* scsi_pm.c */ 159 #ifdef CONFIG_PM 160 extern const struct dev_pm_ops scsi_bus_pm_ops; 161 162 extern void scsi_autopm_get_target(struct scsi_target *); 163 extern void scsi_autopm_put_target(struct scsi_target *); 164 extern int scsi_autopm_get_host(struct Scsi_Host *); 165 extern void scsi_autopm_put_host(struct Scsi_Host *); 166 #else 167 static inline void scsi_autopm_get_target(struct scsi_target *t) {} 168 static inline void scsi_autopm_put_target(struct scsi_target *t) {} 169 static inline int scsi_autopm_get_host(struct Scsi_Host *h) { return 0; } 170 static inline void scsi_autopm_put_host(struct Scsi_Host *h) {} 171 #endif /* CONFIG_PM */ 172 173 /* scsi_dh.c */ 174 #ifdef CONFIG_SCSI_DH 175 void scsi_dh_add_device(struct scsi_device *sdev); 176 void scsi_dh_release_device(struct scsi_device *sdev); 177 #else 178 static inline void scsi_dh_add_device(struct scsi_device *sdev) { } 179 static inline void scsi_dh_release_device(struct scsi_device *sdev) { } 180 #endif 181 182 struct bsg_device *scsi_bsg_register_queue(struct scsi_device *sdev); 183 184 extern 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 */ 194