1 #ifndef _SCSI_PRIV_H 2 #define _SCSI_PRIV_H 3 4 #include <linux/config.h> 5 #include <linux/device.h> 6 7 struct request_queue; 8 struct scsi_cmnd; 9 struct scsi_device; 10 struct scsi_host_template; 11 struct scsi_request; 12 struct Scsi_Host; 13 14 15 /* 16 * Magic values for certain scsi structs. Shouldn't ever be used. 17 */ 18 #define SCSI_CMND_MAGIC 0xE25C23A5 19 #define SCSI_REQ_MAGIC 0x75F6D354 20 21 /* 22 * Scsi Error Handler Flags 23 */ 24 #define SCSI_EH_CANCEL_CMD 0x0001 /* Cancel this cmd */ 25 26 #define SCSI_SENSE_VALID(scmd) \ 27 (((scmd)->sense_buffer[0] & 0x70) == 0x70) 28 29 /* 30 * Special value for scanning to specify scanning or rescanning of all 31 * possible channels, (target) ids, or luns on a given shost. 32 */ 33 #define SCAN_WILD_CARD ~0 34 35 /* hosts.c */ 36 extern int scsi_init_hosts(void); 37 extern void scsi_exit_hosts(void); 38 39 /* scsi.c */ 40 extern int scsi_dispatch_cmd(struct scsi_cmnd *cmd); 41 extern int scsi_setup_command_freelist(struct Scsi_Host *shost); 42 extern void scsi_destroy_command_freelist(struct Scsi_Host *shost); 43 extern int scsi_insert_special_req(struct scsi_request *sreq, int); 44 extern void scsi_init_cmd_from_req(struct scsi_cmnd *cmd, 45 struct scsi_request *sreq); 46 extern void __scsi_release_request(struct scsi_request *sreq); 47 extern void __scsi_done(struct scsi_cmnd *cmd); 48 #ifdef CONFIG_SCSI_LOGGING 49 void scsi_log_send(struct scsi_cmnd *cmd); 50 void scsi_log_completion(struct scsi_cmnd *cmd, int disposition); 51 #else 52 static inline void scsi_log_send(struct scsi_cmnd *cmd) 53 { }; 54 static inline void scsi_log_completion(struct scsi_cmnd *cmd, int disposition) 55 { }; 56 #endif 57 58 /* scsi_devinfo.c */ 59 extern int scsi_get_device_flags(struct scsi_device *sdev, 60 unsigned char *vendor, unsigned char *model); 61 extern int __init scsi_init_devinfo(void); 62 extern void scsi_exit_devinfo(void); 63 64 /* scsi_error.c */ 65 extern void scsi_add_timer(struct scsi_cmnd *, int, 66 void (*)(struct scsi_cmnd *)); 67 extern int scsi_delete_timer(struct scsi_cmnd *); 68 extern void scsi_times_out(struct scsi_cmnd *cmd); 69 extern int scsi_error_handler(void *host); 70 extern int scsi_decide_disposition(struct scsi_cmnd *cmd); 71 extern void scsi_eh_wakeup(struct Scsi_Host *shost); 72 extern int scsi_eh_scmd_add(struct scsi_cmnd *, int); 73 74 /* scsi_lib.c */ 75 extern int scsi_maybe_unblock_host(struct scsi_device *sdev); 76 extern void scsi_setup_cmd_retry(struct scsi_cmnd *cmd); 77 extern void scsi_device_unbusy(struct scsi_device *sdev); 78 extern int scsi_queue_insert(struct scsi_cmnd *cmd, int reason); 79 extern void scsi_next_command(struct scsi_cmnd *cmd); 80 extern void scsi_run_host_queues(struct Scsi_Host *shost); 81 extern struct request_queue *scsi_alloc_queue(struct scsi_device *sdev); 82 extern void scsi_free_queue(struct request_queue *q); 83 extern int scsi_init_queue(void); 84 extern void scsi_exit_queue(void); 85 86 /* scsi_proc.c */ 87 #ifdef CONFIG_SCSI_PROC_FS 88 extern void scsi_proc_hostdir_add(struct scsi_host_template *); 89 extern void scsi_proc_hostdir_rm(struct scsi_host_template *); 90 extern void scsi_proc_host_add(struct Scsi_Host *); 91 extern void scsi_proc_host_rm(struct Scsi_Host *); 92 extern int scsi_init_procfs(void); 93 extern void scsi_exit_procfs(void); 94 #else 95 # define scsi_proc_hostdir_add(sht) do { } while (0) 96 # define scsi_proc_hostdir_rm(sht) do { } while (0) 97 # define scsi_proc_host_add(shost) do { } while (0) 98 # define scsi_proc_host_rm(shost) do { } while (0) 99 # define scsi_init_procfs() (0) 100 # define scsi_exit_procfs() do { } while (0) 101 #endif /* CONFIG_PROC_FS */ 102 103 /* scsi_scan.c */ 104 extern int scsi_scan_host_selected(struct Scsi_Host *, unsigned int, 105 unsigned int, unsigned int, int); 106 extern void scsi_forget_host(struct Scsi_Host *); 107 extern void scsi_rescan_device(struct device *); 108 109 /* scsi_sysctl.c */ 110 #ifdef CONFIG_SYSCTL 111 extern int scsi_init_sysctl(void); 112 extern void scsi_exit_sysctl(void); 113 #else 114 # define scsi_init_sysctl() (0) 115 # define scsi_exit_sysctl() do { } while (0) 116 #endif /* CONFIG_SYSCTL */ 117 118 /* scsi_sysfs.c */ 119 extern int scsi_sysfs_add_sdev(struct scsi_device *); 120 extern int scsi_sysfs_add_host(struct Scsi_Host *); 121 extern int scsi_sysfs_register(void); 122 extern void scsi_sysfs_unregister(void); 123 extern void scsi_sysfs_device_initialize(struct scsi_device *); 124 extern int scsi_sysfs_target_initialize(struct scsi_device *); 125 extern struct scsi_transport_template blank_transport_template; 126 extern void __scsi_remove_device(struct scsi_device *); 127 128 extern struct bus_type scsi_bus_type; 129 130 /* 131 * internal scsi timeout functions: for use by mid-layer and transport 132 * classes. 133 */ 134 135 #define SCSI_DEVICE_BLOCK_MAX_TIMEOUT (HZ*60) 136 extern int scsi_internal_device_block(struct scsi_device *sdev); 137 extern int scsi_internal_device_unblock(struct scsi_device *sdev); 138 139 #endif /* _SCSI_PRIV_H */ 140