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_devinfo.c */ 42 extern int scsi_get_device_flags(struct scsi_device *sdev, 43 const unsigned char *vendor, 44 const unsigned char *model); 45 extern int __init scsi_init_devinfo(void); 46 extern void scsi_exit_devinfo(void); 47 48 /* scsi_error.c */ 49 extern enum blk_eh_timer_return scsi_times_out(struct request *req); 50 extern int scsi_error_handler(void *host); 51 extern int scsi_decide_disposition(struct scsi_cmnd *cmd); 52 extern void scsi_eh_wakeup(struct Scsi_Host *shost); 53 extern int scsi_eh_scmd_add(struct scsi_cmnd *, int); 54 void scsi_eh_ready_devs(struct Scsi_Host *shost, 55 struct list_head *work_q, 56 struct list_head *done_q); 57 int scsi_eh_get_sense(struct list_head *work_q, 58 struct list_head *done_q); 59 int scsi_noretry_cmd(struct scsi_cmnd *scmd); 60 61 /* scsi_lib.c */ 62 extern int scsi_maybe_unblock_host(struct scsi_device *sdev); 63 extern void scsi_device_unbusy(struct scsi_device *sdev); 64 extern int scsi_queue_insert(struct scsi_cmnd *cmd, int reason); 65 extern void scsi_next_command(struct scsi_cmnd *cmd); 66 extern void scsi_io_completion(struct scsi_cmnd *, unsigned int); 67 extern void scsi_run_host_queues(struct Scsi_Host *shost); 68 extern struct request_queue *scsi_alloc_queue(struct scsi_device *sdev); 69 extern void scsi_free_queue(struct request_queue *q); 70 extern int scsi_init_queue(void); 71 extern void scsi_exit_queue(void); 72 struct request_queue; 73 struct request; 74 extern int scsi_prep_fn(struct request_queue *, struct request *); 75 extern struct kmem_cache *scsi_sdb_cache; 76 77 /* scsi_proc.c */ 78 #ifdef CONFIG_SCSI_PROC_FS 79 extern void scsi_proc_hostdir_add(struct scsi_host_template *); 80 extern void scsi_proc_hostdir_rm(struct scsi_host_template *); 81 extern void scsi_proc_host_add(struct Scsi_Host *); 82 extern void scsi_proc_host_rm(struct Scsi_Host *); 83 extern int scsi_init_procfs(void); 84 extern void scsi_exit_procfs(void); 85 #else 86 # define scsi_proc_hostdir_add(sht) do { } while (0) 87 # define scsi_proc_hostdir_rm(sht) do { } while (0) 88 # define scsi_proc_host_add(shost) do { } while (0) 89 # define scsi_proc_host_rm(shost) do { } while (0) 90 # define scsi_init_procfs() (0) 91 # define scsi_exit_procfs() do { } while (0) 92 #endif /* CONFIG_PROC_FS */ 93 94 /* scsi_scan.c */ 95 extern int scsi_scan_host_selected(struct Scsi_Host *, unsigned int, 96 unsigned int, unsigned int, int); 97 extern void scsi_forget_host(struct Scsi_Host *); 98 extern void scsi_rescan_device(struct device *); 99 100 /* scsi_sysctl.c */ 101 #ifdef CONFIG_SYSCTL 102 extern int scsi_init_sysctl(void); 103 extern void scsi_exit_sysctl(void); 104 #else 105 # define scsi_init_sysctl() (0) 106 # define scsi_exit_sysctl() do { } while (0) 107 #endif /* CONFIG_SYSCTL */ 108 109 /* scsi_sysfs.c */ 110 extern int scsi_sysfs_add_sdev(struct scsi_device *); 111 extern int scsi_sysfs_add_host(struct Scsi_Host *); 112 extern int scsi_sysfs_register(void); 113 extern void scsi_sysfs_unregister(void); 114 extern void scsi_sysfs_device_initialize(struct scsi_device *); 115 extern int scsi_sysfs_target_initialize(struct scsi_device *); 116 extern struct scsi_transport_template blank_transport_template; 117 extern void __scsi_remove_device(struct scsi_device *); 118 119 extern struct bus_type scsi_bus_type; 120 extern struct attribute_group *scsi_sysfs_shost_attr_groups[]; 121 122 /* scsi_netlink.c */ 123 #ifdef CONFIG_SCSI_NETLINK 124 extern void scsi_netlink_init(void); 125 extern void scsi_netlink_exit(void); 126 extern struct sock *scsi_nl_sock; 127 #else 128 static inline void scsi_netlink_init(void) {} 129 static inline void scsi_netlink_exit(void) {} 130 #endif 131 132 /* 133 * internal scsi timeout functions: for use by mid-layer and transport 134 * classes. 135 */ 136 137 #define SCSI_DEVICE_BLOCK_MAX_TIMEOUT 600 /* units in seconds */ 138 extern int scsi_internal_device_block(struct scsi_device *sdev); 139 extern int scsi_internal_device_unblock(struct scsi_device *sdev); 140 141 #endif /* _SCSI_PRIV_H */ 142