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 <linux/async.h> 7 #include <scsi/scsi_device.h> 8 #include <linux/sbitmap.h> 9 10 struct bsg_device; 11 struct request_queue; 12 struct request; 13 struct scsi_cmnd; 14 struct scsi_device; 15 struct scsi_target; 16 struct scsi_host_template; 17 struct Scsi_Host; 18 struct scsi_nl_hdr; 19 20 #define SCSI_CMD_RETRIES_NO_LIMIT -1 21 22 /* 23 * Scsi Error Handler Flags 24 */ 25 #define SCSI_EH_ABORT_SCHEDULED 0x0002 /* Abort has been scheduled */ 26 27 #define SCSI_SENSE_VALID(scmd) \ 28 (((scmd)->sense_buffer[0] & 0x70) == 0x70) 29 30 /* hosts.c */ 31 extern int scsi_init_hosts(void); 32 extern void scsi_exit_hosts(void); 33 34 /* scsi.c */ 35 int scsi_init_sense_cache(struct Scsi_Host *shost); 36 void scsi_init_command(struct scsi_device *dev, struct scsi_cmnd *cmd); 37 #ifdef CONFIG_SCSI_LOGGING 38 void scsi_log_send(struct scsi_cmnd *cmd); 39 void scsi_log_completion(struct scsi_cmnd *cmd, int disposition); 40 #else 41 static inline void scsi_log_send(struct scsi_cmnd *cmd) 42 { }; 43 static inline void scsi_log_completion(struct scsi_cmnd *cmd, int disposition) 44 { }; 45 #endif 46 47 /* scsi_devinfo.c */ 48 49 /* list of keys for the lists */ 50 enum scsi_devinfo_key { 51 SCSI_DEVINFO_GLOBAL = 0, 52 SCSI_DEVINFO_SPI, 53 }; 54 55 extern blist_flags_t scsi_get_device_flags(struct scsi_device *sdev, 56 const unsigned char *vendor, 57 const unsigned char *model); 58 extern blist_flags_t scsi_get_device_flags_keyed(struct scsi_device *sdev, 59 const unsigned char *vendor, 60 const unsigned char *model, 61 enum scsi_devinfo_key key); 62 extern int scsi_dev_info_list_add_keyed(int compatible, char *vendor, 63 char *model, char *strflags, 64 blist_flags_t flags, 65 enum scsi_devinfo_key key); 66 extern int scsi_dev_info_list_del_keyed(char *vendor, char *model, 67 enum scsi_devinfo_key key); 68 extern int scsi_dev_info_add_list(enum scsi_devinfo_key key, const char *name); 69 extern int scsi_dev_info_remove_list(enum scsi_devinfo_key key); 70 71 extern int __init scsi_init_devinfo(void); 72 extern void scsi_exit_devinfo(void); 73 74 /* scsi_error.c */ 75 extern void scmd_eh_abort_handler(struct work_struct *work); 76 extern enum blk_eh_timer_return scsi_times_out(struct request *req); 77 extern int scsi_error_handler(void *host); 78 extern enum scsi_disposition scsi_decide_disposition(struct scsi_cmnd *cmd); 79 extern void scsi_eh_wakeup(struct Scsi_Host *shost); 80 extern void scsi_eh_scmd_add(struct scsi_cmnd *); 81 void scsi_eh_ready_devs(struct Scsi_Host *shost, 82 struct list_head *work_q, 83 struct list_head *done_q); 84 int scsi_eh_get_sense(struct list_head *work_q, 85 struct list_head *done_q); 86 int scsi_noretry_cmd(struct scsi_cmnd *scmd); 87 void scsi_eh_done(struct scsi_cmnd *scmd); 88 89 /* scsi_lib.c */ 90 extern int scsi_maybe_unblock_host(struct scsi_device *sdev); 91 extern void scsi_device_unbusy(struct scsi_device *sdev, struct scsi_cmnd *cmd); 92 extern void scsi_queue_insert(struct scsi_cmnd *cmd, int reason); 93 extern void scsi_io_completion(struct scsi_cmnd *, unsigned int); 94 extern void scsi_run_host_queues(struct Scsi_Host *shost); 95 extern void scsi_requeue_run_queue(struct work_struct *work); 96 extern void scsi_start_queue(struct scsi_device *sdev); 97 extern int scsi_mq_setup_tags(struct Scsi_Host *shost); 98 extern void scsi_mq_destroy_tags(struct Scsi_Host *shost); 99 extern void scsi_exit_queue(void); 100 extern void scsi_evt_thread(struct work_struct *work); 101 102 /* scsi_proc.c */ 103 #ifdef CONFIG_SCSI_PROC_FS 104 extern void scsi_proc_hostdir_add(struct scsi_host_template *); 105 extern void scsi_proc_hostdir_rm(struct scsi_host_template *); 106 extern void scsi_proc_host_add(struct Scsi_Host *); 107 extern void scsi_proc_host_rm(struct Scsi_Host *); 108 extern int scsi_init_procfs(void); 109 extern void scsi_exit_procfs(void); 110 #else 111 # define scsi_proc_hostdir_add(sht) do { } while (0) 112 # define scsi_proc_hostdir_rm(sht) do { } while (0) 113 # define scsi_proc_host_add(shost) do { } while (0) 114 # define scsi_proc_host_rm(shost) do { } while (0) 115 # define scsi_init_procfs() (0) 116 # define scsi_exit_procfs() do { } while (0) 117 #endif /* CONFIG_PROC_FS */ 118 119 /* scsi_scan.c */ 120 void scsi_enable_async_suspend(struct device *dev); 121 extern int scsi_complete_async_scans(void); 122 extern int scsi_scan_host_selected(struct Scsi_Host *, unsigned int, 123 unsigned int, u64, enum scsi_scan_mode); 124 extern void scsi_forget_host(struct Scsi_Host *); 125 extern void scsi_rescan_device(struct device *); 126 127 /* scsi_sysctl.c */ 128 #ifdef CONFIG_SYSCTL 129 extern int scsi_init_sysctl(void); 130 extern void scsi_exit_sysctl(void); 131 #else 132 # define scsi_init_sysctl() (0) 133 # define scsi_exit_sysctl() do { } while (0) 134 #endif /* CONFIG_SYSCTL */ 135 136 /* scsi_sysfs.c */ 137 extern int scsi_sysfs_add_sdev(struct scsi_device *); 138 extern int scsi_sysfs_add_host(struct Scsi_Host *); 139 extern int scsi_sysfs_register(void); 140 extern void scsi_sysfs_unregister(void); 141 extern void scsi_sysfs_device_initialize(struct scsi_device *); 142 extern int scsi_sysfs_target_initialize(struct scsi_device *); 143 extern struct scsi_transport_template blank_transport_template; 144 extern void __scsi_remove_device(struct scsi_device *); 145 146 extern struct bus_type scsi_bus_type; 147 extern const struct attribute_group scsi_shost_attr_group; 148 149 /* scsi_netlink.c */ 150 #ifdef CONFIG_SCSI_NETLINK 151 extern void scsi_netlink_init(void); 152 extern void scsi_netlink_exit(void); 153 extern struct sock *scsi_nl_sock; 154 #else 155 static inline void scsi_netlink_init(void) {} 156 static inline void scsi_netlink_exit(void) {} 157 #endif 158 159 /* scsi_pm.c */ 160 #ifdef CONFIG_PM 161 extern const struct dev_pm_ops scsi_bus_pm_ops; 162 163 extern void scsi_autopm_get_target(struct scsi_target *); 164 extern void scsi_autopm_put_target(struct scsi_target *); 165 extern int scsi_autopm_get_host(struct Scsi_Host *); 166 extern void scsi_autopm_put_host(struct Scsi_Host *); 167 #else 168 static inline void scsi_autopm_get_target(struct scsi_target *t) {} 169 static inline void scsi_autopm_put_target(struct scsi_target *t) {} 170 static inline int scsi_autopm_get_host(struct Scsi_Host *h) { return 0; } 171 static inline void scsi_autopm_put_host(struct Scsi_Host *h) {} 172 #endif /* CONFIG_PM */ 173 174 /* scsi_dh.c */ 175 #ifdef CONFIG_SCSI_DH 176 void scsi_dh_add_device(struct scsi_device *sdev); 177 void scsi_dh_release_device(struct scsi_device *sdev); 178 #else 179 static inline void scsi_dh_add_device(struct scsi_device *sdev) { } 180 static inline void scsi_dh_release_device(struct scsi_device *sdev) { } 181 #endif 182 183 struct bsg_device *scsi_bsg_register_queue(struct scsi_device *sdev); 184 185 extern int scsi_device_max_queue_depth(struct scsi_device *sdev); 186 187 /* 188 * internal scsi timeout functions: for use by mid-layer and transport 189 * classes. 190 */ 191 192 #define SCSI_DEVICE_BLOCK_MAX_TIMEOUT 600 /* units in seconds */ 193 194 #endif /* _SCSI_PRIV_H */ 195