1 #ifndef _SCSI_PRIV_H 2 #define _SCSI_PRIV_H 3 4 #include <linux/device.h> 5 #include <linux/async.h> 6 #include <scsi/scsi_device.h> 7 8 struct request_queue; 9 struct request; 10 struct scsi_cmnd; 11 struct scsi_device; 12 struct scsi_target; 13 struct scsi_host_template; 14 struct Scsi_Host; 15 struct scsi_nl_hdr; 16 17 18 /* 19 * Scsi Error Handler Flags 20 */ 21 #define SCSI_EH_CANCEL_CMD 0x0001 /* Cancel this cmd */ 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 { 49 SCSI_DEVINFO_GLOBAL = 0, 50 SCSI_DEVINFO_SPI, 51 }; 52 53 extern int scsi_get_device_flags(struct scsi_device *sdev, 54 const unsigned char *vendor, 55 const unsigned char *model); 56 extern int scsi_get_device_flags_keyed(struct scsi_device *sdev, 57 const unsigned char *vendor, 58 const unsigned char *model, int key); 59 extern int scsi_dev_info_list_add_keyed(int compatible, char *vendor, 60 char *model, char *strflags, 61 int flags, int key); 62 extern int scsi_dev_info_list_del_keyed(char *vendor, char *model, int key); 63 extern int scsi_dev_info_add_list(int key, const char *name); 64 extern int scsi_dev_info_remove_list(int key); 65 66 extern int __init scsi_init_devinfo(void); 67 extern void scsi_exit_devinfo(void); 68 69 /* scsi_error.c */ 70 extern void scmd_eh_abort_handler(struct work_struct *work); 71 extern enum blk_eh_timer_return scsi_times_out(struct request *req); 72 extern int scsi_error_handler(void *host); 73 extern int scsi_decide_disposition(struct scsi_cmnd *cmd); 74 extern void scsi_eh_wakeup(struct Scsi_Host *shost); 75 extern int scsi_eh_scmd_add(struct scsi_cmnd *, int); 76 void scsi_eh_ready_devs(struct Scsi_Host *shost, 77 struct list_head *work_q, 78 struct list_head *done_q); 79 int scsi_eh_get_sense(struct list_head *work_q, 80 struct list_head *done_q); 81 int scsi_noretry_cmd(struct scsi_cmnd *scmd); 82 83 /* scsi_lib.c */ 84 extern int scsi_maybe_unblock_host(struct scsi_device *sdev); 85 extern void scsi_device_unbusy(struct scsi_device *sdev); 86 extern void scsi_queue_insert(struct scsi_cmnd *cmd, int reason); 87 extern void scsi_io_completion(struct scsi_cmnd *, unsigned int); 88 extern void scsi_run_host_queues(struct Scsi_Host *shost); 89 extern void scsi_requeue_run_queue(struct work_struct *work); 90 extern struct request_queue *scsi_alloc_queue(struct scsi_device *sdev); 91 extern struct request_queue *scsi_mq_alloc_queue(struct scsi_device *sdev); 92 extern int scsi_mq_setup_tags(struct Scsi_Host *shost); 93 extern void scsi_mq_destroy_tags(struct Scsi_Host *shost); 94 extern int scsi_init_queue(void); 95 extern void scsi_exit_queue(void); 96 extern void scsi_evt_thread(struct work_struct *work); 97 struct request_queue; 98 struct request; 99 100 /* scsi_proc.c */ 101 #ifdef CONFIG_SCSI_PROC_FS 102 extern void scsi_proc_hostdir_add(struct scsi_host_template *); 103 extern void scsi_proc_hostdir_rm(struct scsi_host_template *); 104 extern void scsi_proc_host_add(struct Scsi_Host *); 105 extern void scsi_proc_host_rm(struct Scsi_Host *); 106 extern int scsi_init_procfs(void); 107 extern void scsi_exit_procfs(void); 108 #else 109 # define scsi_proc_hostdir_add(sht) do { } while (0) 110 # define scsi_proc_hostdir_rm(sht) do { } while (0) 111 # define scsi_proc_host_add(shost) do { } while (0) 112 # define scsi_proc_host_rm(shost) do { } while (0) 113 # define scsi_init_procfs() (0) 114 # define scsi_exit_procfs() do { } while (0) 115 #endif /* CONFIG_PROC_FS */ 116 117 /* scsi_scan.c */ 118 extern char scsi_scan_type[]; 119 extern int scsi_complete_async_scans(void); 120 extern int scsi_scan_host_selected(struct Scsi_Host *, unsigned int, 121 unsigned int, u64, enum scsi_scan_mode); 122 extern void scsi_forget_host(struct Scsi_Host *); 123 extern void scsi_rescan_device(struct device *); 124 125 /* scsi_sysctl.c */ 126 #ifdef CONFIG_SYSCTL 127 extern int scsi_init_sysctl(void); 128 extern void scsi_exit_sysctl(void); 129 #else 130 # define scsi_init_sysctl() (0) 131 # define scsi_exit_sysctl() do { } while (0) 132 #endif /* CONFIG_SYSCTL */ 133 134 /* scsi_sysfs.c */ 135 extern int scsi_sysfs_add_sdev(struct scsi_device *); 136 extern int scsi_sysfs_add_host(struct Scsi_Host *); 137 extern int scsi_sysfs_register(void); 138 extern void scsi_sysfs_unregister(void); 139 extern void scsi_sysfs_device_initialize(struct scsi_device *); 140 extern int scsi_sysfs_target_initialize(struct scsi_device *); 141 extern struct scsi_transport_template blank_transport_template; 142 extern void __scsi_remove_device(struct scsi_device *); 143 144 extern struct bus_type scsi_bus_type; 145 extern const struct attribute_group *scsi_sysfs_shost_attr_groups[]; 146 147 /* scsi_netlink.c */ 148 #ifdef CONFIG_SCSI_NETLINK 149 extern void scsi_netlink_init(void); 150 extern void scsi_netlink_exit(void); 151 extern struct sock *scsi_nl_sock; 152 #else 153 static inline void scsi_netlink_init(void) {} 154 static inline void scsi_netlink_exit(void) {} 155 #endif 156 157 /* scsi_pm.c */ 158 #ifdef CONFIG_PM 159 extern const struct dev_pm_ops scsi_bus_pm_ops; 160 161 extern void scsi_autopm_get_target(struct scsi_target *); 162 extern void scsi_autopm_put_target(struct scsi_target *); 163 extern int scsi_autopm_get_host(struct Scsi_Host *); 164 extern void scsi_autopm_put_host(struct Scsi_Host *); 165 #else 166 static inline void scsi_autopm_get_target(struct scsi_target *t) {} 167 static inline void scsi_autopm_put_target(struct scsi_target *t) {} 168 static inline int scsi_autopm_get_host(struct Scsi_Host *h) { return 0; } 169 static inline void scsi_autopm_put_host(struct Scsi_Host *h) {} 170 #endif /* CONFIG_PM */ 171 172 extern struct async_domain scsi_sd_pm_domain; 173 extern struct async_domain scsi_sd_probe_domain; 174 175 /* scsi_dh.c */ 176 #ifdef CONFIG_SCSI_DH 177 int scsi_dh_add_device(struct scsi_device *sdev); 178 void scsi_dh_release_device(struct scsi_device *sdev); 179 #else 180 static inline int scsi_dh_add_device(struct scsi_device *sdev) { return 0; } 181 static inline void scsi_dh_release_device(struct scsi_device *sdev) { } 182 #endif 183 static inline void scsi_dh_remove_device(struct scsi_device *sdev) { } 184 185 /* 186 * internal scsi timeout functions: for use by mid-layer and transport 187 * classes. 188 */ 189 190 #define SCSI_DEVICE_BLOCK_MAX_TIMEOUT 600 /* units in seconds */ 191 extern int scsi_internal_device_block(struct scsi_device *sdev); 192 extern int scsi_internal_device_unblock(struct scsi_device *sdev, 193 enum scsi_device_state new_state); 194 195 #endif /* _SCSI_PRIV_H */ 196