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_target; 11 struct scsi_host_template; 12 struct Scsi_Host; 13 struct scsi_nl_hdr; 14 15 16 /* 17 * Scsi Error Handler Flags 18 */ 19 #define SCSI_EH_CANCEL_CMD 0x0001 /* Cancel this cmd */ 20 21 #define SCSI_SENSE_VALID(scmd) \ 22 (((scmd)->sense_buffer[0] & 0x70) == 0x70) 23 24 /* hosts.c */ 25 extern int scsi_init_hosts(void); 26 extern void scsi_exit_hosts(void); 27 28 /* scsi.c */ 29 extern int scsi_dispatch_cmd(struct scsi_cmnd *cmd); 30 extern int scsi_setup_command_freelist(struct Scsi_Host *shost); 31 extern void scsi_destroy_command_freelist(struct Scsi_Host *shost); 32 #ifdef CONFIG_SCSI_LOGGING 33 void scsi_log_send(struct scsi_cmnd *cmd); 34 void scsi_log_completion(struct scsi_cmnd *cmd, int disposition); 35 #else 36 static inline void scsi_log_send(struct scsi_cmnd *cmd) 37 { }; 38 static inline void scsi_log_completion(struct scsi_cmnd *cmd, int disposition) 39 { }; 40 #endif 41 42 /* scsi_devinfo.c */ 43 44 /* list of keys for the lists */ 45 enum { 46 SCSI_DEVINFO_GLOBAL = 0, 47 SCSI_DEVINFO_SPI, 48 }; 49 50 extern int scsi_get_device_flags(struct scsi_device *sdev, 51 const unsigned char *vendor, 52 const unsigned char *model); 53 extern int scsi_get_device_flags_keyed(struct scsi_device *sdev, 54 const unsigned char *vendor, 55 const unsigned char *model, int key); 56 extern int scsi_dev_info_list_add_keyed(int compatible, char *vendor, 57 char *model, char *strflags, 58 int flags, int key); 59 extern int scsi_dev_info_list_del_keyed(char *vendor, char *model, int key); 60 extern int scsi_dev_info_add_list(int key, const char *name); 61 extern int scsi_dev_info_remove_list(int key); 62 63 extern int __init scsi_init_devinfo(void); 64 extern void scsi_exit_devinfo(void); 65 66 /* scsi_error.c */ 67 extern enum blk_eh_timer_return scsi_times_out(struct request *req); 68 extern int scsi_error_handler(void *host); 69 extern int scsi_decide_disposition(struct scsi_cmnd *cmd); 70 extern void scsi_eh_wakeup(struct Scsi_Host *shost); 71 extern int scsi_eh_scmd_add(struct scsi_cmnd *, int); 72 void scsi_eh_ready_devs(struct Scsi_Host *shost, 73 struct list_head *work_q, 74 struct list_head *done_q); 75 int scsi_eh_get_sense(struct list_head *work_q, 76 struct list_head *done_q); 77 int scsi_noretry_cmd(struct scsi_cmnd *scmd); 78 79 /* scsi_lib.c */ 80 extern int scsi_maybe_unblock_host(struct scsi_device *sdev); 81 extern void scsi_device_unbusy(struct scsi_device *sdev); 82 extern int scsi_queue_insert(struct scsi_cmnd *cmd, int reason); 83 extern void scsi_next_command(struct scsi_cmnd *cmd); 84 extern void scsi_io_completion(struct scsi_cmnd *, unsigned int); 85 extern void scsi_run_host_queues(struct Scsi_Host *shost); 86 extern struct request_queue *scsi_alloc_queue(struct scsi_device *sdev); 87 extern void scsi_free_queue(struct request_queue *q); 88 extern int scsi_init_queue(void); 89 extern void scsi_exit_queue(void); 90 struct request_queue; 91 struct request; 92 extern struct kmem_cache *scsi_sdb_cache; 93 94 /* scsi_proc.c */ 95 #ifdef CONFIG_SCSI_PROC_FS 96 extern void scsi_proc_hostdir_add(struct scsi_host_template *); 97 extern void scsi_proc_hostdir_rm(struct scsi_host_template *); 98 extern void scsi_proc_host_add(struct Scsi_Host *); 99 extern void scsi_proc_host_rm(struct Scsi_Host *); 100 extern int scsi_init_procfs(void); 101 extern void scsi_exit_procfs(void); 102 #else 103 # define scsi_proc_hostdir_add(sht) do { } while (0) 104 # define scsi_proc_hostdir_rm(sht) do { } while (0) 105 # define scsi_proc_host_add(shost) do { } while (0) 106 # define scsi_proc_host_rm(shost) do { } while (0) 107 # define scsi_init_procfs() (0) 108 # define scsi_exit_procfs() do { } while (0) 109 #endif /* CONFIG_PROC_FS */ 110 111 /* scsi_scan.c */ 112 extern int scsi_scan_host_selected(struct Scsi_Host *, unsigned int, 113 unsigned int, unsigned int, int); 114 extern void scsi_forget_host(struct Scsi_Host *); 115 extern void scsi_rescan_device(struct device *); 116 117 /* scsi_sysctl.c */ 118 #ifdef CONFIG_SYSCTL 119 extern int scsi_init_sysctl(void); 120 extern void scsi_exit_sysctl(void); 121 #else 122 # define scsi_init_sysctl() (0) 123 # define scsi_exit_sysctl() do { } while (0) 124 #endif /* CONFIG_SYSCTL */ 125 126 /* scsi_sysfs.c */ 127 extern int scsi_sysfs_add_sdev(struct scsi_device *); 128 extern int scsi_sysfs_add_host(struct Scsi_Host *); 129 extern int scsi_sysfs_register(void); 130 extern void scsi_sysfs_unregister(void); 131 extern void scsi_sysfs_device_initialize(struct scsi_device *); 132 extern int scsi_sysfs_target_initialize(struct scsi_device *); 133 extern struct scsi_transport_template blank_transport_template; 134 extern void __scsi_remove_device(struct scsi_device *); 135 136 extern struct bus_type scsi_bus_type; 137 extern const struct attribute_group *scsi_sysfs_shost_attr_groups[]; 138 139 /* scsi_netlink.c */ 140 #ifdef CONFIG_SCSI_NETLINK 141 extern void scsi_netlink_init(void); 142 extern void scsi_netlink_exit(void); 143 extern struct sock *scsi_nl_sock; 144 #else 145 static inline void scsi_netlink_init(void) {} 146 static inline void scsi_netlink_exit(void) {} 147 #endif 148 149 /* scsi_pm.c */ 150 #ifdef CONFIG_PM 151 extern const struct dev_pm_ops scsi_bus_pm_ops; 152 #endif 153 #ifdef CONFIG_PM_RUNTIME 154 extern void scsi_autopm_get_target(struct scsi_target *); 155 extern void scsi_autopm_put_target(struct scsi_target *); 156 extern int scsi_autopm_get_host(struct Scsi_Host *); 157 extern void scsi_autopm_put_host(struct Scsi_Host *); 158 #else 159 static inline void scsi_autopm_get_target(struct scsi_target *t) {} 160 static inline void scsi_autopm_put_target(struct scsi_target *t) {} 161 static inline int scsi_autopm_get_host(struct Scsi_Host *h) { return 0; } 162 static inline void scsi_autopm_put_host(struct Scsi_Host *h) {} 163 #endif /* CONFIG_PM_RUNTIME */ 164 165 /* 166 * internal scsi timeout functions: for use by mid-layer and transport 167 * classes. 168 */ 169 170 #define SCSI_DEVICE_BLOCK_MAX_TIMEOUT 600 /* units in seconds */ 171 extern int scsi_internal_device_block(struct scsi_device *sdev); 172 extern int scsi_internal_device_unblock(struct scsi_device *sdev); 173 174 #endif /* _SCSI_PRIV_H */ 175