1/* SPDX-License-Identifier: GPL-2.0 */ 2#ifndef _SCSI_PRIV_H 3#define _SCSI_PRIV_H 4 5#include <linux/device.h> 6#include <linux/async.h> 7#include <scsi/scsi_device.h> 8 9struct request_queue; 10struct request; 11struct scsi_cmnd; 12struct scsi_device; 13struct scsi_target; 14struct scsi_host_template; 15struct Scsi_Host; 16struct scsi_nl_hdr; 17 18#define SCSI_CMD_RETRIES_NO_LIMIT -1 19 20/* 21 * Scsi Error Handler Flags 22 */ 23#define SCSI_EH_ABORT_SCHEDULED 0x0002 /* Abort has been scheduled */ 24 25#define SCSI_SENSE_VALID(scmd) \ 26 (((scmd)->sense_buffer[0] & 0x70) == 0x70) 27 28/* hosts.c */ 29extern int scsi_init_hosts(void); 30extern void scsi_exit_hosts(void); 31 32/* scsi.c */ 33int scsi_init_sense_cache(struct Scsi_Host *shost); 34void scsi_init_command(struct scsi_device *dev, struct scsi_cmnd *cmd); 35#ifdef CONFIG_SCSI_LOGGING 36void scsi_log_send(struct scsi_cmnd *cmd); 37void scsi_log_completion(struct scsi_cmnd *cmd, int disposition); 38#else 39static inline void scsi_log_send(struct scsi_cmnd *cmd) 40 { }; 41static inline void scsi_log_completion(struct scsi_cmnd *cmd, int disposition) 42 { }; 43#endif 44 45/* scsi_devinfo.c */ 46 47/* list of keys for the lists */ 48enum scsi_devinfo_key { 49 SCSI_DEVINFO_GLOBAL = 0, 50 SCSI_DEVINFO_SPI, 51}; 52 53extern blist_flags_t scsi_get_device_flags(struct scsi_device *sdev, 54 const unsigned char *vendor, 55 const unsigned char *model); 56extern blist_flags_t scsi_get_device_flags_keyed(struct scsi_device *sdev, 57 const unsigned char *vendor, 58 const unsigned char *model, 59 enum scsi_devinfo_key key); 60extern int scsi_dev_info_list_add_keyed(int compatible, char *vendor, 61 char *model, char *strflags, 62 blist_flags_t flags, 63 enum scsi_devinfo_key key); 64extern int scsi_dev_info_list_del_keyed(char *vendor, char *model, 65 enum scsi_devinfo_key key); 66extern int scsi_dev_info_add_list(enum scsi_devinfo_key key, const char *name); 67extern int scsi_dev_info_remove_list(enum scsi_devinfo_key key); 68 69extern int __init scsi_init_devinfo(void); 70extern void scsi_exit_devinfo(void); 71 72/* scsi_error.c */ 73extern void scmd_eh_abort_handler(struct work_struct *work); 74extern enum blk_eh_timer_return scsi_times_out(struct request *req); 75extern int scsi_error_handler(void *host); 76extern enum scsi_disposition scsi_decide_disposition(struct scsi_cmnd *cmd); 77extern void scsi_eh_wakeup(struct Scsi_Host *shost, unsigned int busy); 78extern void scsi_eh_scmd_add(struct scsi_cmnd *); 79void scsi_eh_ready_devs(struct Scsi_Host *shost, 80 struct list_head *work_q, 81 struct list_head *done_q); 82int scsi_eh_get_sense(struct list_head *work_q, 83 struct list_head *done_q); 84int scsi_noretry_cmd(struct scsi_cmnd *scmd); 85 86/* scsi_lib.c */ 87extern int scsi_maybe_unblock_host(struct scsi_device *sdev); 88extern void scsi_device_unbusy(struct scsi_device *sdev, struct scsi_cmnd *cmd); 89extern void scsi_queue_insert(struct scsi_cmnd *cmd, int reason); 90extern void scsi_io_completion(struct scsi_cmnd *, unsigned int); 91extern void scsi_run_host_queues(struct Scsi_Host *shost); 92extern void scsi_requeue_run_queue(struct work_struct *work); 93extern struct request_queue *scsi_mq_alloc_queue(struct scsi_device *sdev); 94extern void scsi_start_queue(struct scsi_device *sdev); 95extern int scsi_mq_setup_tags(struct Scsi_Host *shost); 96extern void scsi_mq_destroy_tags(struct Scsi_Host *shost); 97extern void scsi_exit_queue(void); 98extern void scsi_evt_thread(struct work_struct *work); 99struct request_queue; 100struct request; 101 102/* scsi_proc.c */ 103#ifdef CONFIG_SCSI_PROC_FS 104extern void scsi_proc_hostdir_add(struct scsi_host_template *); 105extern void scsi_proc_hostdir_rm(struct scsi_host_template *); 106extern void scsi_proc_host_add(struct Scsi_Host *); 107extern void scsi_proc_host_rm(struct Scsi_Host *); 108extern int scsi_init_procfs(void); 109extern void scsi_exit_procfs(void); 110#else 111# define scsi_proc_hostdir_add(sht) do { } while (0) 112# define scsi_proc_hostdir_rm(sht) do { } while (0) 113# define scsi_proc_host_add(shost) do { } while (0) 114# define scsi_proc_host_rm(shost) do { } while (0) 115# define scsi_init_procfs() (0) 116# define scsi_exit_procfs() do { } while (0) 117#endif /* CONFIG_PROC_FS */ 118 119/* scsi_scan.c */ 120extern char scsi_scan_type[]; 121extern int scsi_complete_async_scans(void); 122extern int scsi_scan_host_selected(struct Scsi_Host *, unsigned int, 123 unsigned int, u64, enum scsi_scan_mode); 124extern void scsi_forget_host(struct Scsi_Host *); 125extern void scsi_rescan_device(struct device *); 126 127/* scsi_sysctl.c */ 128#ifdef CONFIG_SYSCTL 129extern int scsi_init_sysctl(void); 130extern void scsi_exit_sysctl(void); 131#else 132# define scsi_init_sysctl() (0) 133# define scsi_exit_sysctl() do { } while (0) 134#endif /* CONFIG_SYSCTL */ 135 136/* scsi_sysfs.c */ 137extern int scsi_sysfs_add_sdev(struct scsi_device *); 138extern int scsi_sysfs_add_host(struct Scsi_Host *); 139extern int scsi_sysfs_register(void); 140extern void scsi_sysfs_unregister(void); 141extern void scsi_sysfs_device_initialize(struct scsi_device *); 142extern int scsi_sysfs_target_initialize(struct scsi_device *); 143extern struct scsi_transport_template blank_transport_template; 144extern void __scsi_remove_device(struct scsi_device *); 145 146extern struct bus_type scsi_bus_type; 147extern const struct attribute_group *scsi_sysfs_shost_attr_groups[]; 148 149/* scsi_netlink.c */ 150#ifdef CONFIG_SCSI_NETLINK 151extern void scsi_netlink_init(void); 152extern void scsi_netlink_exit(void); 153extern struct sock *scsi_nl_sock; 154#else 155static inline void scsi_netlink_init(void) {} 156static inline void scsi_netlink_exit(void) {} 157#endif 158 159/* scsi_pm.c */ 160#ifdef CONFIG_PM 161extern const struct dev_pm_ops scsi_bus_pm_ops; 162 163extern void scsi_autopm_get_target(struct scsi_target *); 164extern void scsi_autopm_put_target(struct scsi_target *); 165extern int scsi_autopm_get_host(struct Scsi_Host *); 166extern void scsi_autopm_put_host(struct Scsi_Host *); 167#else 168static inline void scsi_autopm_get_target(struct scsi_target *t) {} 169static inline void scsi_autopm_put_target(struct scsi_target *t) {} 170static inline int scsi_autopm_get_host(struct Scsi_Host *h) { return 0; } 171static inline void scsi_autopm_put_host(struct Scsi_Host *h) {} 172#endif /* CONFIG_PM */ 173 174extern struct async_domain scsi_sd_pm_domain; 175 176/* scsi_dh.c */ 177#ifdef CONFIG_SCSI_DH 178void scsi_dh_add_device(struct scsi_device *sdev); 179void scsi_dh_release_device(struct scsi_device *sdev); 180#else 181static inline void scsi_dh_add_device(struct scsi_device *sdev) { } 182static inline void scsi_dh_release_device(struct scsi_device *sdev) { } 183#endif 184 185/* 186 * internal scsi timeout functions: for use by mid-layer and transport 187 * classes. 188 */ 189 190#define SCSI_DEVICE_BLOCK_MAX_TIMEOUT 600 /* units in seconds */ 191 192#endif /* _SCSI_PRIV_H */ 193