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