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 43 /* list of keys for the lists */ 44 enum { 45 SCSI_DEVINFO_GLOBAL = 0, 46 SCSI_DEVINFO_SPI, 47 }; 48 49 extern int scsi_get_device_flags(struct scsi_device *sdev, 50 const unsigned char *vendor, 51 const unsigned char *model); 52 extern int scsi_get_device_flags_keyed(struct scsi_device *sdev, 53 const unsigned char *vendor, 54 const unsigned char *model, int key); 55 extern int scsi_dev_info_list_add_keyed(int compatible, char *vendor, 56 char *model, char *strflags, 57 int flags, int key); 58 extern int scsi_dev_info_add_list(int key, const char *name); 59 extern int scsi_dev_info_remove_list(int key); 60 61 extern int __init scsi_init_devinfo(void); 62 extern void scsi_exit_devinfo(void); 63 64 /* scsi_error.c */ 65 extern enum blk_eh_timer_return scsi_times_out(struct request *req); 66 extern int scsi_error_handler(void *host); 67 extern int scsi_decide_disposition(struct scsi_cmnd *cmd); 68 extern void scsi_eh_wakeup(struct Scsi_Host *shost); 69 extern int scsi_eh_scmd_add(struct scsi_cmnd *, int); 70 void scsi_eh_ready_devs(struct Scsi_Host *shost, 71 struct list_head *work_q, 72 struct list_head *done_q); 73 int scsi_eh_get_sense(struct list_head *work_q, 74 struct list_head *done_q); 75 int scsi_noretry_cmd(struct scsi_cmnd *scmd); 76 77 /* scsi_lib.c */ 78 extern int scsi_maybe_unblock_host(struct scsi_device *sdev); 79 extern void scsi_device_unbusy(struct scsi_device *sdev); 80 extern int scsi_queue_insert(struct scsi_cmnd *cmd, int reason); 81 extern void scsi_next_command(struct scsi_cmnd *cmd); 82 extern void scsi_io_completion(struct scsi_cmnd *, unsigned int); 83 extern void scsi_run_host_queues(struct Scsi_Host *shost); 84 extern struct request_queue *scsi_alloc_queue(struct scsi_device *sdev); 85 extern void scsi_free_queue(struct request_queue *q); 86 extern int scsi_init_queue(void); 87 extern void scsi_exit_queue(void); 88 struct request_queue; 89 struct request; 90 extern struct kmem_cache *scsi_sdb_cache; 91 92 /* scsi_proc.c */ 93 #ifdef CONFIG_SCSI_PROC_FS 94 extern void scsi_proc_hostdir_add(struct scsi_host_template *); 95 extern void scsi_proc_hostdir_rm(struct scsi_host_template *); 96 extern void scsi_proc_host_add(struct Scsi_Host *); 97 extern void scsi_proc_host_rm(struct Scsi_Host *); 98 extern int scsi_init_procfs(void); 99 extern void scsi_exit_procfs(void); 100 #else 101 # define scsi_proc_hostdir_add(sht) do { } while (0) 102 # define scsi_proc_hostdir_rm(sht) do { } while (0) 103 # define scsi_proc_host_add(shost) do { } while (0) 104 # define scsi_proc_host_rm(shost) do { } while (0) 105 # define scsi_init_procfs() (0) 106 # define scsi_exit_procfs() do { } while (0) 107 #endif /* CONFIG_PROC_FS */ 108 109 /* scsi_scan.c */ 110 extern int scsi_scan_host_selected(struct Scsi_Host *, unsigned int, 111 unsigned int, unsigned int, int); 112 extern void scsi_forget_host(struct Scsi_Host *); 113 extern void scsi_rescan_device(struct device *); 114 115 /* scsi_sysctl.c */ 116 #ifdef CONFIG_SYSCTL 117 extern int scsi_init_sysctl(void); 118 extern void scsi_exit_sysctl(void); 119 #else 120 # define scsi_init_sysctl() (0) 121 # define scsi_exit_sysctl() do { } while (0) 122 #endif /* CONFIG_SYSCTL */ 123 124 /* scsi_sysfs.c */ 125 extern int scsi_sysfs_add_sdev(struct scsi_device *); 126 extern int scsi_sysfs_add_host(struct Scsi_Host *); 127 extern int scsi_sysfs_register(void); 128 extern void scsi_sysfs_unregister(void); 129 extern void scsi_sysfs_device_initialize(struct scsi_device *); 130 extern int scsi_sysfs_target_initialize(struct scsi_device *); 131 extern struct scsi_transport_template blank_transport_template; 132 extern void __scsi_remove_device(struct scsi_device *); 133 134 extern struct bus_type scsi_bus_type; 135 extern const struct attribute_group *scsi_sysfs_shost_attr_groups[]; 136 137 /* scsi_netlink.c */ 138 #ifdef CONFIG_SCSI_NETLINK 139 extern void scsi_netlink_init(void); 140 extern void scsi_netlink_exit(void); 141 extern struct sock *scsi_nl_sock; 142 #else 143 static inline void scsi_netlink_init(void) {} 144 static inline void scsi_netlink_exit(void) {} 145 #endif 146 147 /* 148 * internal scsi timeout functions: for use by mid-layer and transport 149 * classes. 150 */ 151 152 #define SCSI_DEVICE_BLOCK_MAX_TIMEOUT 600 /* units in seconds */ 153 extern int scsi_internal_device_block(struct scsi_device *sdev); 154 extern int scsi_internal_device_unblock(struct scsi_device *sdev); 155 156 #endif /* _SCSI_PRIV_H */ 157