1 #ifndef _SCSI_PRIV_H 2 #define _SCSI_PRIV_H 3 4 #include <linux/device.h> 5 6 struct request_queue; 7 struct request; 8 struct scsi_cmnd; 9 struct scsi_device; 10 struct scsi_host_template; 11 struct Scsi_Host; 12 struct scsi_nl_hdr; 13 14 15 /* 16 * Scsi Error Handler Flags 17 */ 18 #define SCSI_EH_CANCEL_CMD 0x0001 /* Cancel this cmd */ 19 20 #define SCSI_SENSE_VALID(scmd) \ 21 (((scmd)->sense_buffer[0] & 0x70) == 0x70) 22 23 /* hosts.c */ 24 extern int scsi_init_hosts(void); 25 extern void scsi_exit_hosts(void); 26 27 /* scsi.c */ 28 extern int scsi_dispatch_cmd(struct scsi_cmnd *cmd); 29 extern int scsi_setup_command_freelist(struct Scsi_Host *shost); 30 extern void scsi_destroy_command_freelist(struct Scsi_Host *shost); 31 #ifdef CONFIG_SCSI_LOGGING 32 void scsi_log_send(struct scsi_cmnd *cmd); 33 void scsi_log_completion(struct scsi_cmnd *cmd, int disposition); 34 #else 35 static inline void scsi_log_send(struct scsi_cmnd *cmd) 36 { }; 37 static inline void scsi_log_completion(struct scsi_cmnd *cmd, int disposition) 38 { }; 39 #endif 40 41 /* scsi_scan.c */ 42 int scsi_complete_async_scans(void); 43 44 /* scsi_devinfo.c */ 45 extern int scsi_get_device_flags(struct scsi_device *sdev, 46 const unsigned char *vendor, 47 const unsigned char *model); 48 extern int __init scsi_init_devinfo(void); 49 extern void scsi_exit_devinfo(void); 50 51 /* scsi_error.c */ 52 extern enum blk_eh_timer_return scsi_times_out(struct request *req); 53 extern int scsi_error_handler(void *host); 54 extern int scsi_decide_disposition(struct scsi_cmnd *cmd); 55 extern void scsi_eh_wakeup(struct Scsi_Host *shost); 56 extern int scsi_eh_scmd_add(struct scsi_cmnd *, int); 57 void scsi_eh_ready_devs(struct Scsi_Host *shost, 58 struct list_head *work_q, 59 struct list_head *done_q); 60 int scsi_eh_get_sense(struct list_head *work_q, 61 struct list_head *done_q); 62 63 /* scsi_lib.c */ 64 extern int scsi_maybe_unblock_host(struct scsi_device *sdev); 65 extern void scsi_device_unbusy(struct scsi_device *sdev); 66 extern int scsi_queue_insert(struct scsi_cmnd *cmd, int reason); 67 extern void scsi_next_command(struct scsi_cmnd *cmd); 68 extern void scsi_io_completion(struct scsi_cmnd *, unsigned int); 69 extern void scsi_run_host_queues(struct Scsi_Host *shost); 70 extern struct request_queue *scsi_alloc_queue(struct scsi_device *sdev); 71 extern void scsi_free_queue(struct request_queue *q); 72 extern int scsi_init_queue(void); 73 extern void scsi_exit_queue(void); 74 struct request_queue; 75 struct request; 76 extern int scsi_prep_fn(struct request_queue *, struct request *); 77 extern struct kmem_cache *scsi_sdb_cache; 78 79 /* scsi_proc.c */ 80 #ifdef CONFIG_SCSI_PROC_FS 81 extern void scsi_proc_hostdir_add(struct scsi_host_template *); 82 extern void scsi_proc_hostdir_rm(struct scsi_host_template *); 83 extern void scsi_proc_host_add(struct Scsi_Host *); 84 extern void scsi_proc_host_rm(struct Scsi_Host *); 85 extern int scsi_init_procfs(void); 86 extern void scsi_exit_procfs(void); 87 #else 88 # define scsi_proc_hostdir_add(sht) do { } while (0) 89 # define scsi_proc_hostdir_rm(sht) do { } while (0) 90 # define scsi_proc_host_add(shost) do { } while (0) 91 # define scsi_proc_host_rm(shost) do { } while (0) 92 # define scsi_init_procfs() (0) 93 # define scsi_exit_procfs() do { } while (0) 94 #endif /* CONFIG_PROC_FS */ 95 96 /* scsi_scan.c */ 97 extern int scsi_scan_host_selected(struct Scsi_Host *, unsigned int, 98 unsigned int, unsigned int, int); 99 extern void scsi_forget_host(struct Scsi_Host *); 100 extern void scsi_rescan_device(struct device *); 101 102 /* scsi_sysctl.c */ 103 #ifdef CONFIG_SYSCTL 104 extern int scsi_init_sysctl(void); 105 extern void scsi_exit_sysctl(void); 106 #else 107 # define scsi_init_sysctl() (0) 108 # define scsi_exit_sysctl() do { } while (0) 109 #endif /* CONFIG_SYSCTL */ 110 111 /* scsi_sysfs.c */ 112 extern int scsi_sysfs_add_sdev(struct scsi_device *); 113 extern int scsi_sysfs_add_host(struct Scsi_Host *); 114 extern int scsi_sysfs_register(void); 115 extern void scsi_sysfs_unregister(void); 116 extern void scsi_sysfs_device_initialize(struct scsi_device *); 117 extern int scsi_sysfs_target_initialize(struct scsi_device *); 118 extern struct scsi_transport_template blank_transport_template; 119 extern void __scsi_remove_device(struct scsi_device *); 120 121 extern struct bus_type scsi_bus_type; 122 extern struct attribute_group *scsi_sysfs_shost_attr_groups[]; 123 124 /* scsi_netlink.c */ 125 #ifdef CONFIG_SCSI_NETLINK 126 extern void scsi_netlink_init(void); 127 extern void scsi_netlink_exit(void); 128 extern struct sock *scsi_nl_sock; 129 #else 130 static inline void scsi_netlink_init(void) {} 131 static inline void scsi_netlink_exit(void) {} 132 #endif 133 134 /* 135 * internal scsi timeout functions: for use by mid-layer and transport 136 * classes. 137 */ 138 139 #define SCSI_DEVICE_BLOCK_MAX_TIMEOUT 600 /* units in seconds */ 140 extern int scsi_internal_device_block(struct scsi_device *sdev); 141 extern int scsi_internal_device_unblock(struct scsi_device *sdev); 142 143 #endif /* _SCSI_PRIV_H */ 144