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 SCSI_DEVINFO_DH, 49 }; 50 51 extern int scsi_get_device_flags(struct scsi_device *sdev, 52 const unsigned char *vendor, 53 const unsigned char *model); 54 extern int scsi_get_device_flags_keyed(struct scsi_device *sdev, 55 const unsigned char *vendor, 56 const unsigned char *model, int key); 57 extern int scsi_dev_info_list_add_keyed(int compatible, char *vendor, 58 char *model, char *strflags, 59 int flags, int key); 60 extern int scsi_dev_info_list_del_keyed(char *vendor, char *model, int key); 61 extern int scsi_dev_info_add_list(int key, const char *name); 62 extern int scsi_dev_info_remove_list(int key); 63 64 extern int __init scsi_init_devinfo(void); 65 extern void scsi_exit_devinfo(void); 66 67 /* scsi_error.c */ 68 extern enum blk_eh_timer_return scsi_times_out(struct request *req); 69 extern int scsi_error_handler(void *host); 70 extern int scsi_decide_disposition(struct scsi_cmnd *cmd); 71 extern void scsi_eh_wakeup(struct Scsi_Host *shost); 72 extern int scsi_eh_scmd_add(struct scsi_cmnd *, int); 73 void scsi_eh_ready_devs(struct Scsi_Host *shost, 74 struct list_head *work_q, 75 struct list_head *done_q); 76 int scsi_eh_get_sense(struct list_head *work_q, 77 struct list_head *done_q); 78 int scsi_noretry_cmd(struct scsi_cmnd *scmd); 79 80 /* scsi_lib.c */ 81 extern int scsi_maybe_unblock_host(struct scsi_device *sdev); 82 extern void scsi_device_unbusy(struct scsi_device *sdev); 83 extern int scsi_queue_insert(struct scsi_cmnd *cmd, int reason); 84 extern void scsi_next_command(struct scsi_cmnd *cmd); 85 extern void scsi_io_completion(struct scsi_cmnd *, unsigned int); 86 extern void scsi_run_host_queues(struct Scsi_Host *shost); 87 extern struct request_queue *scsi_alloc_queue(struct scsi_device *sdev); 88 extern void scsi_free_queue(struct request_queue *q); 89 extern int scsi_init_queue(void); 90 extern void scsi_exit_queue(void); 91 struct request_queue; 92 struct request; 93 extern struct kmem_cache *scsi_sdb_cache; 94 95 /* scsi_proc.c */ 96 #ifdef CONFIG_SCSI_PROC_FS 97 extern void scsi_proc_hostdir_add(struct scsi_host_template *); 98 extern void scsi_proc_hostdir_rm(struct scsi_host_template *); 99 extern void scsi_proc_host_add(struct Scsi_Host *); 100 extern void scsi_proc_host_rm(struct Scsi_Host *); 101 extern int scsi_init_procfs(void); 102 extern void scsi_exit_procfs(void); 103 #else 104 # define scsi_proc_hostdir_add(sht) do { } while (0) 105 # define scsi_proc_hostdir_rm(sht) do { } while (0) 106 # define scsi_proc_host_add(shost) do { } while (0) 107 # define scsi_proc_host_rm(shost) do { } while (0) 108 # define scsi_init_procfs() (0) 109 # define scsi_exit_procfs() do { } while (0) 110 #endif /* CONFIG_PROC_FS */ 111 112 /* scsi_scan.c */ 113 extern int scsi_scan_host_selected(struct Scsi_Host *, unsigned int, 114 unsigned int, unsigned int, int); 115 extern void scsi_forget_host(struct Scsi_Host *); 116 extern void scsi_rescan_device(struct device *); 117 118 /* scsi_sysctl.c */ 119 #ifdef CONFIG_SYSCTL 120 extern int scsi_init_sysctl(void); 121 extern void scsi_exit_sysctl(void); 122 #else 123 # define scsi_init_sysctl() (0) 124 # define scsi_exit_sysctl() do { } while (0) 125 #endif /* CONFIG_SYSCTL */ 126 127 /* scsi_sysfs.c */ 128 extern int scsi_sysfs_add_sdev(struct scsi_device *); 129 extern int scsi_sysfs_add_host(struct Scsi_Host *); 130 extern int scsi_sysfs_register(void); 131 extern void scsi_sysfs_unregister(void); 132 extern void scsi_sysfs_device_initialize(struct scsi_device *); 133 extern int scsi_sysfs_target_initialize(struct scsi_device *); 134 extern struct scsi_transport_template blank_transport_template; 135 extern void __scsi_remove_device(struct scsi_device *); 136 137 extern struct bus_type scsi_bus_type; 138 extern const struct attribute_group *scsi_sysfs_shost_attr_groups[]; 139 140 /* scsi_netlink.c */ 141 #ifdef CONFIG_SCSI_NETLINK 142 extern void scsi_netlink_init(void); 143 extern void scsi_netlink_exit(void); 144 extern struct sock *scsi_nl_sock; 145 #else 146 static inline void scsi_netlink_init(void) {} 147 static inline void scsi_netlink_exit(void) {} 148 #endif 149 150 /* scsi_pm.c */ 151 #ifdef CONFIG_PM 152 extern const struct dev_pm_ops scsi_bus_pm_ops; 153 #endif 154 #ifdef CONFIG_PM_RUNTIME 155 extern void scsi_autopm_get_target(struct scsi_target *); 156 extern void scsi_autopm_put_target(struct scsi_target *); 157 extern int scsi_autopm_get_host(struct Scsi_Host *); 158 extern void scsi_autopm_put_host(struct Scsi_Host *); 159 #else 160 static inline void scsi_autopm_get_target(struct scsi_target *t) {} 161 static inline void scsi_autopm_put_target(struct scsi_target *t) {} 162 static inline int scsi_autopm_get_host(struct Scsi_Host *h) { return 0; } 163 static inline void scsi_autopm_put_host(struct Scsi_Host *h) {} 164 #endif /* CONFIG_PM_RUNTIME */ 165 166 /* 167 * internal scsi timeout functions: for use by mid-layer and transport 168 * classes. 169 */ 170 171 #define SCSI_DEVICE_BLOCK_MAX_TIMEOUT 600 /* units in seconds */ 172 extern int scsi_internal_device_block(struct scsi_device *sdev); 173 extern int scsi_internal_device_unblock(struct scsi_device *sdev); 174 175 #endif /* _SCSI_PRIV_H */ 176