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 int scsi_setup_command_freelist(struct Scsi_Host *shost); 33 extern void scsi_destroy_command_freelist(struct Scsi_Host *shost); 34 #ifdef CONFIG_SCSI_LOGGING 35 void scsi_log_send(struct scsi_cmnd *cmd); 36 void scsi_log_completion(struct scsi_cmnd *cmd, int disposition); 37 #else 38 static inline void scsi_log_send(struct scsi_cmnd *cmd) 39 { }; 40 static inline void scsi_log_completion(struct scsi_cmnd *cmd, int disposition) 41 { }; 42 #endif 43 44 /* scsi_devinfo.c */ 45 46 /* list of keys for the lists */ 47 enum { 48 SCSI_DEVINFO_GLOBAL = 0, 49 SCSI_DEVINFO_SPI, 50 }; 51 52 extern int scsi_get_device_flags(struct scsi_device *sdev, 53 const unsigned char *vendor, 54 const unsigned char *model); 55 extern int scsi_get_device_flags_keyed(struct scsi_device *sdev, 56 const unsigned char *vendor, 57 const unsigned char *model, int key); 58 extern int scsi_dev_info_list_add_keyed(int compatible, char *vendor, 59 char *model, char *strflags, 60 int flags, int key); 61 extern int scsi_dev_info_list_del_keyed(char *vendor, char *model, int key); 62 extern int scsi_dev_info_add_list(int key, const char *name); 63 extern int scsi_dev_info_remove_list(int key); 64 65 extern int __init scsi_init_devinfo(void); 66 extern void scsi_exit_devinfo(void); 67 68 /* scsi_error.c */ 69 extern void scmd_eh_abort_handler(struct work_struct *work); 70 extern enum blk_eh_timer_return scsi_times_out(struct request *req); 71 extern int scsi_error_handler(void *host); 72 extern int scsi_decide_disposition(struct scsi_cmnd *cmd); 73 extern void scsi_eh_wakeup(struct Scsi_Host *shost); 74 extern int scsi_eh_scmd_add(struct scsi_cmnd *, int); 75 void scsi_eh_ready_devs(struct Scsi_Host *shost, 76 struct list_head *work_q, 77 struct list_head *done_q); 78 int scsi_eh_get_sense(struct list_head *work_q, 79 struct list_head *done_q); 80 int scsi_noretry_cmd(struct scsi_cmnd *scmd); 81 82 /* scsi_lib.c */ 83 extern int scsi_maybe_unblock_host(struct scsi_device *sdev); 84 extern void scsi_device_unbusy(struct scsi_device *sdev); 85 extern void scsi_queue_insert(struct scsi_cmnd *cmd, int reason); 86 extern void scsi_io_completion(struct scsi_cmnd *, unsigned int); 87 extern void scsi_run_host_queues(struct Scsi_Host *shost); 88 extern struct request_queue *scsi_alloc_queue(struct scsi_device *sdev); 89 extern struct request_queue *scsi_mq_alloc_queue(struct scsi_device *sdev); 90 extern int scsi_mq_setup_tags(struct Scsi_Host *shost); 91 extern void scsi_mq_destroy_tags(struct Scsi_Host *shost); 92 extern int scsi_init_queue(void); 93 extern void scsi_exit_queue(void); 94 struct request_queue; 95 struct request; 96 extern struct kmem_cache *scsi_sdb_cache; 97 98 /* scsi_proc.c */ 99 #ifdef CONFIG_SCSI_PROC_FS 100 extern void scsi_proc_hostdir_add(struct scsi_host_template *); 101 extern void scsi_proc_hostdir_rm(struct scsi_host_template *); 102 extern void scsi_proc_host_add(struct Scsi_Host *); 103 extern void scsi_proc_host_rm(struct Scsi_Host *); 104 extern int scsi_init_procfs(void); 105 extern void scsi_exit_procfs(void); 106 #else 107 # define scsi_proc_hostdir_add(sht) do { } while (0) 108 # define scsi_proc_hostdir_rm(sht) do { } while (0) 109 # define scsi_proc_host_add(shost) do { } while (0) 110 # define scsi_proc_host_rm(shost) do { } while (0) 111 # define scsi_init_procfs() (0) 112 # define scsi_exit_procfs() do { } while (0) 113 #endif /* CONFIG_PROC_FS */ 114 115 /* scsi_scan.c */ 116 extern char scsi_scan_type[]; 117 extern int scsi_complete_async_scans(void); 118 extern int scsi_scan_host_selected(struct Scsi_Host *, unsigned int, 119 unsigned int, u64, enum scsi_scan_mode); 120 extern void scsi_forget_host(struct Scsi_Host *); 121 extern void scsi_rescan_device(struct device *); 122 123 /* scsi_sysctl.c */ 124 #ifdef CONFIG_SYSCTL 125 extern int scsi_init_sysctl(void); 126 extern void scsi_exit_sysctl(void); 127 #else 128 # define scsi_init_sysctl() (0) 129 # define scsi_exit_sysctl() do { } while (0) 130 #endif /* CONFIG_SYSCTL */ 131 132 /* scsi_sysfs.c */ 133 extern int scsi_sysfs_add_sdev(struct scsi_device *); 134 extern int scsi_sysfs_add_host(struct Scsi_Host *); 135 extern int scsi_sysfs_register(void); 136 extern void scsi_sysfs_unregister(void); 137 extern void scsi_sysfs_device_initialize(struct scsi_device *); 138 extern int scsi_sysfs_target_initialize(struct scsi_device *); 139 extern struct scsi_transport_template blank_transport_template; 140 extern void __scsi_remove_device(struct scsi_device *); 141 142 extern struct bus_type scsi_bus_type; 143 extern const struct attribute_group *scsi_sysfs_shost_attr_groups[]; 144 145 /* scsi_netlink.c */ 146 #ifdef CONFIG_SCSI_NETLINK 147 extern void scsi_netlink_init(void); 148 extern void scsi_netlink_exit(void); 149 extern struct sock *scsi_nl_sock; 150 #else 151 static inline void scsi_netlink_init(void) {} 152 static inline void scsi_netlink_exit(void) {} 153 #endif 154 155 /* scsi_pm.c */ 156 #ifdef CONFIG_PM 157 extern const struct dev_pm_ops scsi_bus_pm_ops; 158 159 extern void scsi_autopm_get_target(struct scsi_target *); 160 extern void scsi_autopm_put_target(struct scsi_target *); 161 extern int scsi_autopm_get_host(struct Scsi_Host *); 162 extern void scsi_autopm_put_host(struct Scsi_Host *); 163 #else 164 static inline void scsi_autopm_get_target(struct scsi_target *t) {} 165 static inline void scsi_autopm_put_target(struct scsi_target *t) {} 166 static inline int scsi_autopm_get_host(struct Scsi_Host *h) { return 0; } 167 static inline void scsi_autopm_put_host(struct Scsi_Host *h) {} 168 #endif /* CONFIG_PM */ 169 170 extern struct async_domain scsi_sd_pm_domain; 171 extern struct async_domain scsi_sd_probe_domain; 172 173 /* scsi_dh.c */ 174 #ifdef CONFIG_SCSI_DH 175 int scsi_dh_add_device(struct scsi_device *sdev); 176 void scsi_dh_release_device(struct scsi_device *sdev); 177 #else 178 static inline int scsi_dh_add_device(struct scsi_device *sdev) { return 0; } 179 static inline void scsi_dh_release_device(struct scsi_device *sdev) { } 180 #endif 181 static inline void scsi_dh_remove_device(struct scsi_device *sdev) { } 182 183 /* 184 * internal scsi timeout functions: for use by mid-layer and transport 185 * classes. 186 */ 187 188 #define SCSI_DEVICE_BLOCK_MAX_TIMEOUT 600 /* units in seconds */ 189 extern int scsi_internal_device_block(struct scsi_device *sdev); 190 extern int scsi_internal_device_unblock(struct scsi_device *sdev, 191 enum scsi_device_state new_state); 192 193 #endif /* _SCSI_PRIV_H */ 194