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 9 struct request_queue; 10 struct request; 11 struct scsi_cmnd; 12 struct scsi_device; 13 struct scsi_target; 14 struct scsi_host_template; 15 struct Scsi_Host; 16 struct scsi_nl_hdr; 17 18 19 /* 20 * Scsi Error Handler Flags 21 */ 22 #define SCSI_EH_ABORT_SCHEDULED 0x0002 /* Abort has been scheduled */ 23 24 #define SCSI_SENSE_VALID(scmd) \ 25 (((scmd)->sense_buffer[0] & 0x70) == 0x70) 26 27 /* hosts.c */ 28 extern int scsi_init_hosts(void); 29 extern void scsi_exit_hosts(void); 30 31 /* scsi.c */ 32 extern bool scsi_use_blk_mq; 33 int scsi_init_sense_cache(struct Scsi_Host *shost); 34 void scsi_init_command(struct scsi_device *dev, struct scsi_cmnd *cmd); 35 #ifdef CONFIG_SCSI_LOGGING 36 void scsi_log_send(struct scsi_cmnd *cmd); 37 void scsi_log_completion(struct scsi_cmnd *cmd, int disposition); 38 #else 39 static inline void scsi_log_send(struct scsi_cmnd *cmd) 40 { }; 41 static inline void scsi_log_completion(struct scsi_cmnd *cmd, int disposition) 42 { }; 43 #endif 44 45 /* scsi_devinfo.c */ 46 47 /* list of keys for the lists */ 48 enum scsi_devinfo_key { 49 SCSI_DEVINFO_GLOBAL = 0, 50 SCSI_DEVINFO_SPI, 51 }; 52 53 extern blist_flags_t scsi_get_device_flags(struct scsi_device *sdev, 54 const unsigned char *vendor, 55 const unsigned char *model); 56 extern blist_flags_t scsi_get_device_flags_keyed(struct scsi_device *sdev, 57 const unsigned char *vendor, 58 const unsigned char *model, 59 enum scsi_devinfo_key key); 60 extern int scsi_dev_info_list_add_keyed(int compatible, char *vendor, 61 char *model, char *strflags, 62 blist_flags_t flags, 63 enum scsi_devinfo_key key); 64 extern int scsi_dev_info_list_del_keyed(char *vendor, char *model, 65 enum scsi_devinfo_key key); 66 extern int scsi_dev_info_add_list(enum scsi_devinfo_key key, const char *name); 67 extern int scsi_dev_info_remove_list(enum scsi_devinfo_key key); 68 69 extern int __init scsi_init_devinfo(void); 70 extern void scsi_exit_devinfo(void); 71 72 /* scsi_error.c */ 73 extern void scmd_eh_abort_handler(struct work_struct *work); 74 extern enum blk_eh_timer_return scsi_times_out(struct request *req); 75 extern int scsi_error_handler(void *host); 76 extern int scsi_decide_disposition(struct scsi_cmnd *cmd); 77 extern void scsi_eh_wakeup(struct Scsi_Host *shost); 78 extern void scsi_eh_scmd_add(struct scsi_cmnd *); 79 void scsi_eh_ready_devs(struct Scsi_Host *shost, 80 struct list_head *work_q, 81 struct list_head *done_q); 82 int scsi_eh_get_sense(struct list_head *work_q, 83 struct list_head *done_q); 84 int scsi_noretry_cmd(struct scsi_cmnd *scmd); 85 86 /* scsi_lib.c */ 87 extern void scsi_add_cmd_to_list(struct scsi_cmnd *cmd); 88 extern void scsi_del_cmd_from_list(struct scsi_cmnd *cmd); 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 struct request_queue *scsi_mq_alloc_queue(struct scsi_device *sdev); 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 int scsi_init_queue(void); 100 extern void scsi_exit_queue(void); 101 extern void scsi_evt_thread(struct work_struct *work); 102 struct request_queue; 103 struct request; 104 105 /* scsi_proc.c */ 106 #ifdef CONFIG_SCSI_PROC_FS 107 extern void scsi_proc_hostdir_add(struct scsi_host_template *); 108 extern void scsi_proc_hostdir_rm(struct scsi_host_template *); 109 extern void scsi_proc_host_add(struct Scsi_Host *); 110 extern void scsi_proc_host_rm(struct Scsi_Host *); 111 extern int scsi_init_procfs(void); 112 extern void scsi_exit_procfs(void); 113 #else 114 # define scsi_proc_hostdir_add(sht) do { } while (0) 115 # define scsi_proc_hostdir_rm(sht) do { } while (0) 116 # define scsi_proc_host_add(shost) do { } while (0) 117 # define scsi_proc_host_rm(shost) do { } while (0) 118 # define scsi_init_procfs() (0) 119 # define scsi_exit_procfs() do { } while (0) 120 #endif /* CONFIG_PROC_FS */ 121 122 /* scsi_scan.c */ 123 extern char scsi_scan_type[]; 124 extern int scsi_complete_async_scans(void); 125 extern int scsi_scan_host_selected(struct Scsi_Host *, unsigned int, 126 unsigned int, u64, enum scsi_scan_mode); 127 extern void scsi_forget_host(struct Scsi_Host *); 128 extern void scsi_rescan_device(struct device *); 129 130 /* scsi_sysctl.c */ 131 #ifdef CONFIG_SYSCTL 132 extern int scsi_init_sysctl(void); 133 extern void scsi_exit_sysctl(void); 134 #else 135 # define scsi_init_sysctl() (0) 136 # define scsi_exit_sysctl() do { } while (0) 137 #endif /* CONFIG_SYSCTL */ 138 139 /* scsi_sysfs.c */ 140 extern int scsi_sysfs_add_sdev(struct scsi_device *); 141 extern int scsi_sysfs_add_host(struct Scsi_Host *); 142 extern int scsi_sysfs_register(void); 143 extern void scsi_sysfs_unregister(void); 144 extern void scsi_sysfs_device_initialize(struct scsi_device *); 145 extern int scsi_sysfs_target_initialize(struct scsi_device *); 146 extern struct scsi_transport_template blank_transport_template; 147 extern void __scsi_remove_device(struct scsi_device *); 148 149 extern struct bus_type scsi_bus_type; 150 extern const struct attribute_group *scsi_sysfs_shost_attr_groups[]; 151 152 /* scsi_netlink.c */ 153 #ifdef CONFIG_SCSI_NETLINK 154 extern void scsi_netlink_init(void); 155 extern void scsi_netlink_exit(void); 156 extern struct sock *scsi_nl_sock; 157 #else 158 static inline void scsi_netlink_init(void) {} 159 static inline void scsi_netlink_exit(void) {} 160 #endif 161 162 /* scsi_pm.c */ 163 #ifdef CONFIG_PM 164 extern const struct dev_pm_ops scsi_bus_pm_ops; 165 166 extern void scsi_autopm_get_target(struct scsi_target *); 167 extern void scsi_autopm_put_target(struct scsi_target *); 168 extern int scsi_autopm_get_host(struct Scsi_Host *); 169 extern void scsi_autopm_put_host(struct Scsi_Host *); 170 #else 171 static inline void scsi_autopm_get_target(struct scsi_target *t) {} 172 static inline void scsi_autopm_put_target(struct scsi_target *t) {} 173 static inline int scsi_autopm_get_host(struct Scsi_Host *h) { return 0; } 174 static inline void scsi_autopm_put_host(struct Scsi_Host *h) {} 175 #endif /* CONFIG_PM */ 176 177 extern struct async_domain scsi_sd_pm_domain; 178 179 /* scsi_dh.c */ 180 #ifdef CONFIG_SCSI_DH 181 void scsi_dh_add_device(struct scsi_device *sdev); 182 void scsi_dh_release_device(struct scsi_device *sdev); 183 #else 184 static inline void scsi_dh_add_device(struct scsi_device *sdev) { } 185 static inline void scsi_dh_release_device(struct scsi_device *sdev) { } 186 #endif 187 188 /* 189 * internal scsi timeout functions: for use by mid-layer and transport 190 * classes. 191 */ 192 193 #define SCSI_DEVICE_BLOCK_MAX_TIMEOUT 600 /* units in seconds */ 194 195 #endif /* _SCSI_PRIV_H */ 196