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 /* hosts.c */ 30 extern int scsi_init_hosts(void); 31 extern void scsi_exit_hosts(void); 32 33 /* scsi.c */ 34 extern int scsi_dispatch_cmd(struct scsi_cmnd *cmd); 35 extern int scsi_setup_command_freelist(struct Scsi_Host *shost); 36 extern void scsi_destroy_command_freelist(struct Scsi_Host *shost); 37 extern void scsi_init_cmd_from_req(struct scsi_cmnd *cmd, 38 struct scsi_request *sreq); 39 extern void __scsi_release_request(struct scsi_request *sreq); 40 extern void __scsi_done(struct scsi_cmnd *cmd); 41 extern int scsi_retry_command(struct scsi_cmnd *cmd); 42 #ifdef CONFIG_SCSI_LOGGING 43 void scsi_log_send(struct scsi_cmnd *cmd); 44 void scsi_log_completion(struct scsi_cmnd *cmd, int disposition); 45 #else 46 static inline void scsi_log_send(struct scsi_cmnd *cmd) 47 { }; 48 static inline void scsi_log_completion(struct scsi_cmnd *cmd, int disposition) 49 { }; 50 #endif 51 52 /* scsi_devinfo.c */ 53 extern int scsi_get_device_flags(struct scsi_device *sdev, 54 const unsigned char *vendor, 55 const unsigned char *model); 56 extern int __init scsi_init_devinfo(void); 57 extern void scsi_exit_devinfo(void); 58 59 /* scsi_error.c */ 60 extern void scsi_add_timer(struct scsi_cmnd *, int, 61 void (*)(struct scsi_cmnd *)); 62 extern int scsi_delete_timer(struct scsi_cmnd *); 63 extern void scsi_times_out(struct scsi_cmnd *cmd); 64 extern int scsi_error_handler(void *host); 65 extern int scsi_decide_disposition(struct scsi_cmnd *cmd); 66 extern void scsi_eh_wakeup(struct Scsi_Host *shost); 67 extern int scsi_eh_scmd_add(struct scsi_cmnd *, int); 68 69 /* scsi_lib.c */ 70 extern int scsi_maybe_unblock_host(struct scsi_device *sdev); 71 extern void scsi_setup_cmd_retry(struct scsi_cmnd *cmd); 72 extern void scsi_device_unbusy(struct scsi_device *sdev); 73 extern int scsi_queue_insert(struct scsi_cmnd *cmd, int reason); 74 extern void scsi_next_command(struct scsi_cmnd *cmd); 75 extern void scsi_run_host_queues(struct Scsi_Host *shost); 76 extern struct request_queue *scsi_alloc_queue(struct scsi_device *sdev); 77 extern void scsi_free_queue(struct request_queue *q); 78 extern int scsi_init_queue(void); 79 extern void scsi_exit_queue(void); 80 81 /* scsi_proc.c */ 82 #ifdef CONFIG_SCSI_PROC_FS 83 extern void scsi_proc_hostdir_add(struct scsi_host_template *); 84 extern void scsi_proc_hostdir_rm(struct scsi_host_template *); 85 extern void scsi_proc_host_add(struct Scsi_Host *); 86 extern void scsi_proc_host_rm(struct Scsi_Host *); 87 extern int scsi_init_procfs(void); 88 extern void scsi_exit_procfs(void); 89 #else 90 # define scsi_proc_hostdir_add(sht) do { } while (0) 91 # define scsi_proc_hostdir_rm(sht) do { } while (0) 92 # define scsi_proc_host_add(shost) do { } while (0) 93 # define scsi_proc_host_rm(shost) do { } while (0) 94 # define scsi_init_procfs() (0) 95 # define scsi_exit_procfs() do { } while (0) 96 #endif /* CONFIG_PROC_FS */ 97 98 /* scsi_scan.c */ 99 extern int scsi_scan_host_selected(struct Scsi_Host *, unsigned int, 100 unsigned int, unsigned int, int); 101 extern void scsi_forget_host(struct Scsi_Host *); 102 extern void scsi_rescan_device(struct device *); 103 104 /* scsi_sysctl.c */ 105 #ifdef CONFIG_SYSCTL 106 extern int scsi_init_sysctl(void); 107 extern void scsi_exit_sysctl(void); 108 #else 109 # define scsi_init_sysctl() (0) 110 # define scsi_exit_sysctl() do { } while (0) 111 #endif /* CONFIG_SYSCTL */ 112 113 /* scsi_sysfs.c */ 114 extern int scsi_sysfs_add_sdev(struct scsi_device *); 115 extern int scsi_sysfs_add_host(struct Scsi_Host *); 116 extern int scsi_sysfs_register(void); 117 extern void scsi_sysfs_unregister(void); 118 extern void scsi_sysfs_device_initialize(struct scsi_device *); 119 extern int scsi_sysfs_target_initialize(struct scsi_device *); 120 extern struct scsi_transport_template blank_transport_template; 121 extern void __scsi_remove_device(struct scsi_device *); 122 123 extern struct bus_type scsi_bus_type; 124 125 /* 126 * internal scsi timeout functions: for use by mid-layer and transport 127 * classes. 128 */ 129 130 #define SCSI_DEVICE_BLOCK_MAX_TIMEOUT (HZ*60) 131 extern int scsi_internal_device_block(struct scsi_device *sdev); 132 extern int scsi_internal_device_unblock(struct scsi_device *sdev); 133 134 #endif /* _SCSI_PRIV_H */ 135