1#ifndef _SCSI_PRIV_H 2#define _SCSI_PRIV_H 3 4#include <linux/device.h> 5#include <linux/async.h> 6#include <scsi/scsi_device.h> 7 8struct request_queue; 9struct request; 10struct scsi_cmnd; 11struct scsi_device; 12struct scsi_target; 13struct scsi_host_template; 14struct Scsi_Host; 15struct scsi_nl_hdr; 16 17 18/* 19 * Scsi Error Handler Flags 20 */ 21#define SCSI_EH_CANCEL_CMD 0x0001 /* Cancel this cmd */ 22#define SCSI_EH_ABORT_SCHEDULED 0x0002 /* Abort has been scheduled */ 23 24#define SCSI_SENSE_VALID(scmd) \ 25 (((scmd)->sense_buffer[0] & 0x70) == 0x70) 26 27/* hosts.c */ 28extern int scsi_init_hosts(void); 29extern void scsi_exit_hosts(void); 30 31/* scsi.c */ 32extern int scsi_setup_command_freelist(struct Scsi_Host *shost); 33extern void scsi_destroy_command_freelist(struct Scsi_Host *shost); 34#ifdef CONFIG_SCSI_LOGGING 35void scsi_log_send(struct scsi_cmnd *cmd); 36void scsi_log_completion(struct scsi_cmnd *cmd, int disposition); 37#else 38static inline void scsi_log_send(struct scsi_cmnd *cmd) 39 { }; 40static inline void scsi_log_completion(struct scsi_cmnd *cmd, int disposition) 41 { }; 42#endif 43 44/* scsi_devinfo.c */ 45 46/* list of keys for the lists */ 47enum { 48 SCSI_DEVINFO_GLOBAL = 0, 49 SCSI_DEVINFO_SPI, 50}; 51 52extern int scsi_get_device_flags(struct scsi_device *sdev, 53 const unsigned char *vendor, 54 const unsigned char *model); 55extern int scsi_get_device_flags_keyed(struct scsi_device *sdev, 56 const unsigned char *vendor, 57 const unsigned char *model, int key); 58extern int scsi_dev_info_list_add_keyed(int compatible, char *vendor, 59 char *model, char *strflags, 60 int flags, int key); 61extern int scsi_dev_info_list_del_keyed(char *vendor, char *model, int key); 62extern int scsi_dev_info_add_list(int key, const char *name); 63extern int scsi_dev_info_remove_list(int key); 64 65extern int __init scsi_init_devinfo(void); 66extern void scsi_exit_devinfo(void); 67 68/* scsi_error.c */ 69extern void scmd_eh_abort_handler(struct work_struct *work); 70extern enum blk_eh_timer_return scsi_times_out(struct request *req); 71extern int scsi_error_handler(void *host); 72extern int scsi_decide_disposition(struct scsi_cmnd *cmd); 73extern void scsi_eh_wakeup(struct Scsi_Host *shost); 74extern int scsi_eh_scmd_add(struct scsi_cmnd *, int); 75void scsi_eh_ready_devs(struct Scsi_Host *shost, 76 struct list_head *work_q, 77 struct list_head *done_q); 78int scsi_eh_get_sense(struct list_head *work_q, 79 struct list_head *done_q); 80int scsi_noretry_cmd(struct scsi_cmnd *scmd); 81 82/* scsi_lib.c */ 83extern int scsi_maybe_unblock_host(struct scsi_device *sdev); 84extern void scsi_device_unbusy(struct scsi_device *sdev); 85extern void scsi_queue_insert(struct scsi_cmnd *cmd, int reason); 86extern void scsi_io_completion(struct scsi_cmnd *, unsigned int); 87extern void scsi_run_host_queues(struct Scsi_Host *shost); 88extern struct request_queue *scsi_alloc_queue(struct scsi_device *sdev); 89extern struct request_queue *scsi_mq_alloc_queue(struct scsi_device *sdev); 90extern int scsi_mq_setup_tags(struct Scsi_Host *shost); 91extern void scsi_mq_destroy_tags(struct Scsi_Host *shost); 92extern int scsi_init_queue(void); 93extern void scsi_exit_queue(void); 94struct request_queue; 95struct request; 96extern struct kmem_cache *scsi_sdb_cache; 97 98/* scsi_proc.c */ 99#ifdef CONFIG_SCSI_PROC_FS 100extern void scsi_proc_hostdir_add(struct scsi_host_template *); 101extern void scsi_proc_hostdir_rm(struct scsi_host_template *); 102extern void scsi_proc_host_add(struct Scsi_Host *); 103extern void scsi_proc_host_rm(struct Scsi_Host *); 104extern int scsi_init_procfs(void); 105extern void scsi_exit_procfs(void); 106#else 107# define scsi_proc_hostdir_add(sht) do { } while (0) 108# define scsi_proc_hostdir_rm(sht) do { } while (0) 109# define scsi_proc_host_add(shost) do { } while (0) 110# define scsi_proc_host_rm(shost) do { } while (0) 111# define scsi_init_procfs() (0) 112# define scsi_exit_procfs() do { } while (0) 113#endif /* CONFIG_PROC_FS */ 114 115/* scsi_scan.c */ 116extern char scsi_scan_type[]; 117extern int scsi_complete_async_scans(void); 118extern int scsi_scan_host_selected(struct Scsi_Host *, unsigned int, 119 unsigned int, u64, int); 120extern void scsi_forget_host(struct Scsi_Host *); 121extern void scsi_rescan_device(struct device *); 122 123/* scsi_sysctl.c */ 124#ifdef CONFIG_SYSCTL 125extern int scsi_init_sysctl(void); 126extern void scsi_exit_sysctl(void); 127#else 128# define scsi_init_sysctl() (0) 129# define scsi_exit_sysctl() do { } while (0) 130#endif /* CONFIG_SYSCTL */ 131 132/* scsi_sysfs.c */ 133extern int scsi_sysfs_add_sdev(struct scsi_device *); 134extern int scsi_sysfs_add_host(struct Scsi_Host *); 135extern int scsi_sysfs_register(void); 136extern void scsi_sysfs_unregister(void); 137extern void scsi_sysfs_device_initialize(struct scsi_device *); 138extern int scsi_sysfs_target_initialize(struct scsi_device *); 139extern struct scsi_transport_template blank_transport_template; 140extern void __scsi_remove_device(struct scsi_device *); 141 142extern struct bus_type scsi_bus_type; 143extern const struct attribute_group *scsi_sysfs_shost_attr_groups[]; 144 145/* scsi_netlink.c */ 146#ifdef CONFIG_SCSI_NETLINK 147extern void scsi_netlink_init(void); 148extern void scsi_netlink_exit(void); 149extern struct sock *scsi_nl_sock; 150#else 151static inline void scsi_netlink_init(void) {} 152static inline void scsi_netlink_exit(void) {} 153#endif 154 155/* scsi_pm.c */ 156#ifdef CONFIG_PM 157extern const struct dev_pm_ops scsi_bus_pm_ops; 158 159extern void scsi_autopm_get_target(struct scsi_target *); 160extern void scsi_autopm_put_target(struct scsi_target *); 161extern int scsi_autopm_get_host(struct Scsi_Host *); 162extern void scsi_autopm_put_host(struct Scsi_Host *); 163#else 164static inline void scsi_autopm_get_target(struct scsi_target *t) {} 165static inline void scsi_autopm_put_target(struct scsi_target *t) {} 166static inline int scsi_autopm_get_host(struct Scsi_Host *h) { return 0; } 167static inline void scsi_autopm_put_host(struct Scsi_Host *h) {} 168#endif /* CONFIG_PM */ 169 170extern struct async_domain scsi_sd_pm_domain; 171extern struct async_domain scsi_sd_probe_domain; 172 173/* 174 * internal scsi timeout functions: for use by mid-layer and transport 175 * classes. 176 */ 177 178#define SCSI_DEVICE_BLOCK_MAX_TIMEOUT 600 /* units in seconds */ 179extern int scsi_internal_device_block(struct scsi_device *sdev); 180extern int scsi_internal_device_unblock(struct scsi_device *sdev, 181 enum scsi_device_state new_state); 182 183#endif /* _SCSI_PRIV_H */ 184