diff options
Diffstat (limited to 'ANDROID_3.4.5/include/scsi/scsi_device.h')
| -rw-r--r-- | ANDROID_3.4.5/include/scsi/scsi_device.h | 487 |
1 files changed, 0 insertions, 487 deletions
diff --git a/ANDROID_3.4.5/include/scsi/scsi_device.h b/ANDROID_3.4.5/include/scsi/scsi_device.h deleted file mode 100644 index ba969885..00000000 --- a/ANDROID_3.4.5/include/scsi/scsi_device.h +++ /dev/null @@ -1,487 +0,0 @@ -#ifndef _SCSI_SCSI_DEVICE_H -#define _SCSI_SCSI_DEVICE_H - -#include <linux/list.h> -#include <linux/spinlock.h> -#include <linux/workqueue.h> -#include <linux/blkdev.h> -#include <scsi/scsi.h> -#include <linux/atomic.h> - -struct device; -struct request_queue; -struct scsi_cmnd; -struct scsi_lun; -struct scsi_sense_hdr; - -struct scsi_mode_data { - __u32 length; - __u16 block_descriptor_length; - __u8 medium_type; - __u8 device_specific; - __u8 header_length; - __u8 longlba:1; -}; - -/* - * sdev state: If you alter this, you also need to alter scsi_sysfs.c - * (for the ascii descriptions) and the state model enforcer: - * scsi_lib:scsi_device_set_state(). - */ -enum scsi_device_state { - SDEV_CREATED = 1, /* device created but not added to sysfs - * Only internal commands allowed (for inq) */ - SDEV_RUNNING, /* device properly configured - * All commands allowed */ - SDEV_CANCEL, /* beginning to delete device - * Only error handler commands allowed */ - SDEV_DEL, /* device deleted - * no commands allowed */ - SDEV_QUIESCE, /* Device quiescent. No block commands - * will be accepted, only specials (which - * originate in the mid-layer) */ - SDEV_OFFLINE, /* Device offlined (by error handling or - * user request */ - SDEV_BLOCK, /* Device blocked by scsi lld. No - * scsi commands from user or midlayer - * should be issued to the scsi - * lld. */ - SDEV_CREATED_BLOCK, /* same as above but for created devices */ -}; - -enum scsi_device_event { - SDEV_EVT_MEDIA_CHANGE = 1, /* media has changed */ - - SDEV_EVT_LAST = SDEV_EVT_MEDIA_CHANGE, - SDEV_EVT_MAXBITS = SDEV_EVT_LAST + 1 -}; - -struct scsi_event { - enum scsi_device_event evt_type; - struct list_head node; - - /* put union of data structures, for non-simple event types, - * here - */ -}; - -struct scsi_device { - struct Scsi_Host *host; - struct request_queue *request_queue; - - /* the next two are protected by the host->host_lock */ - struct list_head siblings; /* list of all devices on this host */ - struct list_head same_target_siblings; /* just the devices sharing same target id */ - - /* this is now protected by the request_queue->queue_lock */ - unsigned int device_busy; /* commands actually active on - * low-level. protected by queue_lock. */ - spinlock_t list_lock; - struct list_head cmd_list; /* queue of in use SCSI Command structures */ - struct list_head starved_entry; - struct scsi_cmnd *current_cmnd; /* currently active command */ - unsigned short queue_depth; /* How deep of a queue we want */ - unsigned short max_queue_depth; /* max queue depth */ - unsigned short last_queue_full_depth; /* These two are used by */ - unsigned short last_queue_full_count; /* scsi_track_queue_full() */ - unsigned long last_queue_full_time; /* last queue full time */ - unsigned long queue_ramp_up_period; /* ramp up period in jiffies */ -#define SCSI_DEFAULT_RAMP_UP_PERIOD (120 * HZ) - - unsigned long last_queue_ramp_up; /* last queue ramp up time */ - - unsigned int id, lun, channel; - - unsigned int manufacturer; /* Manufacturer of device, for using - * vendor-specific cmd's */ - unsigned sector_size; /* size in bytes */ - - void *hostdata; /* available to low-level driver */ - char type; - char scsi_level; - char inq_periph_qual; /* PQ from INQUIRY data */ - unsigned char inquiry_len; /* valid bytes in 'inquiry' */ - unsigned char * inquiry; /* INQUIRY response data */ - const char * vendor; /* [back_compat] point into 'inquiry' ... */ - const char * model; /* ... after scan; point to static string */ - const char * rev; /* ... "nullnullnullnull" before scan */ - unsigned char current_tag; /* current tag */ - struct scsi_target *sdev_target; /* used only for single_lun */ - - unsigned int sdev_bflags; /* black/white flags as also found in - * scsi_devinfo.[hc]. For now used only to - * pass settings from slave_alloc to scsi - * core. */ - unsigned writeable:1; - unsigned removable:1; - unsigned changed:1; /* Data invalid due to media change */ - unsigned busy:1; /* Used to prevent races */ - unsigned lockable:1; /* Able to prevent media removal */ - unsigned locked:1; /* Media removal disabled */ - unsigned borken:1; /* Tell the Seagate driver to be - * painfully slow on this device */ - unsigned disconnect:1; /* can disconnect */ - unsigned soft_reset:1; /* Uses soft reset option */ - unsigned sdtr:1; /* Device supports SDTR messages */ - unsigned wdtr:1; /* Device supports WDTR messages */ - unsigned ppr:1; /* Device supports PPR messages */ - unsigned tagged_supported:1; /* Supports SCSI-II tagged queuing */ - unsigned simple_tags:1; /* simple queue tag messages are enabled */ - unsigned ordered_tags:1;/* ordered queue tag messages are enabled */ - unsigned was_reset:1; /* There was a bus reset on the bus for - * this device */ - unsigned expecting_cc_ua:1; /* Expecting a CHECK_CONDITION/UNIT_ATTN - * because we did a bus reset. */ - unsigned use_10_for_rw:1; /* first try 10-byte read / write */ - unsigned use_10_for_ms:1; /* first try 10-byte mode sense/select */ - unsigned skip_ms_page_8:1; /* do not use MODE SENSE page 0x08 */ - unsigned skip_ms_page_3f:1; /* do not use MODE SENSE page 0x3f */ - unsigned skip_vpd_pages:1; /* do not read VPD pages */ - unsigned use_192_bytes_for_3f:1; /* ask for 192 bytes from page 0x3f */ - unsigned no_start_on_add:1; /* do not issue start on add */ - unsigned allow_restart:1; /* issue START_UNIT in error handler */ - unsigned manage_start_stop:1; /* Let HLD (sd) manage start/stop */ - unsigned start_stop_pwr_cond:1; /* Set power cond. in START_STOP_UNIT */ - unsigned no_uld_attach:1; /* disable connecting to upper level drivers */ - unsigned select_no_atn:1; - unsigned fix_capacity:1; /* READ_CAPACITY is too high by 1 */ - unsigned guess_capacity:1; /* READ_CAPACITY might be too high by 1 */ - unsigned retry_hwerror:1; /* Retry HARDWARE_ERROR */ - unsigned last_sector_bug:1; /* do not use multisector accesses on - SD_LAST_BUGGY_SECTORS */ - unsigned no_read_disc_info:1; /* Avoid READ_DISC_INFO cmds */ - unsigned no_read_capacity_16:1; /* Avoid READ_CAPACITY_16 cmds */ - unsigned try_rc_10_first:1; /* Try READ_CAPACACITY_10 first */ - unsigned is_visible:1; /* is the device visible in sysfs */ - - DECLARE_BITMAP(supported_events, SDEV_EVT_MAXBITS); /* supported events */ - struct list_head event_list; /* asserted events */ - struct work_struct event_work; - - unsigned int device_blocked; /* Device returned QUEUE_FULL. */ - - unsigned int max_device_blocked; /* what device_blocked counts down from */ -#define SCSI_DEFAULT_DEVICE_BLOCKED 3 - - atomic_t iorequest_cnt; - atomic_t iodone_cnt; - atomic_t ioerr_cnt; - - struct device sdev_gendev, - sdev_dev; - - struct execute_work ew; /* used to get process context on put */ - struct work_struct requeue_work; - - struct scsi_dh_data *scsi_dh_data; - enum scsi_device_state sdev_state; - unsigned long sdev_data[0]; -} __attribute__((aligned(sizeof(unsigned long)))); - -struct scsi_dh_devlist { - char *vendor; - char *model; -}; - -typedef void (*activate_complete)(void *, int); -struct scsi_device_handler { - /* Used by the infrastructure */ - struct list_head list; /* list of scsi_device_handlers */ - - /* Filled by the hardware handler */ - struct module *module; - const char *name; - const struct scsi_dh_devlist *devlist; - int (*check_sense)(struct scsi_device *, struct scsi_sense_hdr *); - int (*attach)(struct scsi_device *); - void (*detach)(struct scsi_device *); - int (*activate)(struct scsi_device *, activate_complete, void *); - int (*prep_fn)(struct scsi_device *, struct request *); - int (*set_params)(struct scsi_device *, const char *); - bool (*match)(struct scsi_device *); -}; - -struct scsi_dh_data { - struct scsi_device_handler *scsi_dh; - struct scsi_device *sdev; - struct kref kref; - char buf[0]; -}; - -#define to_scsi_device(d) \ - container_of(d, struct scsi_device, sdev_gendev) -#define class_to_sdev(d) \ - container_of(d, struct scsi_device, sdev_dev) -#define transport_class_to_sdev(class_dev) \ - to_scsi_device(class_dev->parent) - -#define sdev_printk(prefix, sdev, fmt, a...) \ - dev_printk(prefix, &(sdev)->sdev_gendev, fmt, ##a) - -#define scmd_printk(prefix, scmd, fmt, a...) \ - (scmd)->request->rq_disk ? \ - sdev_printk(prefix, (scmd)->device, "[%s] " fmt, \ - (scmd)->request->rq_disk->disk_name, ##a) : \ - sdev_printk(prefix, (scmd)->device, fmt, ##a) - -enum scsi_target_state { - STARGET_CREATED = 1, - STARGET_RUNNING, - STARGET_DEL, -}; - -/* - * scsi_target: representation of a scsi target, for now, this is only - * used for single_lun devices. If no one has active IO to the target, - * starget_sdev_user is NULL, else it points to the active sdev. - */ -struct scsi_target { - struct scsi_device *starget_sdev_user; - struct list_head siblings; - struct list_head devices; - struct device dev; - unsigned int reap_ref; /* protected by the host lock */ - unsigned int channel; - unsigned int id; /* target id ... replace - * scsi_device.id eventually */ - unsigned int create:1; /* signal that it needs to be added */ - unsigned int single_lun:1; /* Indicates we should only - * allow I/O to one of the luns - * for the device at a time. */ - unsigned int pdt_1f_for_no_lun:1; /* PDT = 0x1f - * means no lun present. */ - unsigned int no_report_luns:1; /* Don't use - * REPORT LUNS for scanning. */ - /* commands actually active on LLD. protected by host lock. */ - unsigned int target_busy; - /* - * LLDs should set this in the slave_alloc host template callout. - * If set to zero then there is not limit. - */ - unsigned int can_queue; - unsigned int target_blocked; - unsigned int max_target_blocked; -#define SCSI_DEFAULT_TARGET_BLOCKED 3 - - char scsi_level; - struct execute_work ew; - enum scsi_target_state state; - void *hostdata; /* available to low-level driver */ - unsigned long starget_data[0]; /* for the transport */ - /* starget_data must be the last element!!!! */ -} __attribute__((aligned(sizeof(unsigned long)))); - -#define to_scsi_target(d) container_of(d, struct scsi_target, dev) -static inline struct scsi_target *scsi_target(struct scsi_device *sdev) -{ - return to_scsi_target(sdev->sdev_gendev.parent); -} -#define transport_class_to_starget(class_dev) \ - to_scsi_target(class_dev->parent) - -#define starget_printk(prefix, starget, fmt, a...) \ - dev_printk(prefix, &(starget)->dev, fmt, ##a) - -extern struct scsi_device *__scsi_add_device(struct Scsi_Host *, - uint, uint, uint, void *hostdata); -extern int scsi_add_device(struct Scsi_Host *host, uint channel, - uint target, uint lun); -extern int scsi_register_device_handler(struct scsi_device_handler *scsi_dh); -extern void scsi_remove_device(struct scsi_device *); -extern int scsi_unregister_device_handler(struct scsi_device_handler *scsi_dh); - -extern int scsi_device_get(struct scsi_device *); -extern void scsi_device_put(struct scsi_device *); -extern struct scsi_device *scsi_device_lookup(struct Scsi_Host *, - uint, uint, uint); -extern struct scsi_device *__scsi_device_lookup(struct Scsi_Host *, - uint, uint, uint); -extern struct scsi_device *scsi_device_lookup_by_target(struct scsi_target *, - uint); -extern struct scsi_device *__scsi_device_lookup_by_target(struct scsi_target *, - uint); -extern void starget_for_each_device(struct scsi_target *, void *, - void (*fn)(struct scsi_device *, void *)); -extern void __starget_for_each_device(struct scsi_target *, void *, - void (*fn)(struct scsi_device *, - void *)); - -/* only exposed to implement shost_for_each_device */ -extern struct scsi_device *__scsi_iterate_devices(struct Scsi_Host *, - struct scsi_device *); - -/** - * shost_for_each_device - iterate over all devices of a host - * @sdev: the &struct scsi_device to use as a cursor - * @shost: the &struct scsi_host to iterate over - * - * Iterator that returns each device attached to @shost. This loop - * takes a reference on each device and releases it at the end. If - * you break out of the loop, you must call scsi_device_put(sdev). - */ -#define shost_for_each_device(sdev, shost) \ - for ((sdev) = __scsi_iterate_devices((shost), NULL); \ - (sdev); \ - (sdev) = __scsi_iterate_devices((shost), (sdev))) - -/** - * __shost_for_each_device - iterate over all devices of a host (UNLOCKED) - * @sdev: the &struct scsi_device to use as a cursor - * @shost: the &struct scsi_host to iterate over - * - * Iterator that returns each device attached to @shost. It does _not_ - * take a reference on the scsi_device, so the whole loop must be - * protected by shost->host_lock. - * - * Note: The only reason to use this is because you need to access the - * device list in interrupt context. Otherwise you really want to use - * shost_for_each_device instead. - */ -#define __shost_for_each_device(sdev, shost) \ - list_for_each_entry((sdev), &((shost)->__devices), siblings) - -extern void scsi_adjust_queue_depth(struct scsi_device *, int, int); -extern int scsi_track_queue_full(struct scsi_device *, int); - -extern int scsi_set_medium_removal(struct scsi_device *, char); - -extern int scsi_mode_sense(struct scsi_device *sdev, int dbd, int modepage, - unsigned char *buffer, int len, int timeout, - int retries, struct scsi_mode_data *data, - struct scsi_sense_hdr *); -extern int scsi_mode_select(struct scsi_device *sdev, int pf, int sp, - int modepage, unsigned char *buffer, int len, - int timeout, int retries, - struct scsi_mode_data *data, - struct scsi_sense_hdr *); -extern int scsi_test_unit_ready(struct scsi_device *sdev, int timeout, - int retries, struct scsi_sense_hdr *sshdr); -extern int scsi_get_vpd_page(struct scsi_device *, u8 page, unsigned char *buf, - int buf_len); -extern int scsi_device_set_state(struct scsi_device *sdev, - enum scsi_device_state state); -extern struct scsi_event *sdev_evt_alloc(enum scsi_device_event evt_type, - gfp_t gfpflags); -extern void sdev_evt_send(struct scsi_device *sdev, struct scsi_event *evt); -extern void sdev_evt_send_simple(struct scsi_device *sdev, - enum scsi_device_event evt_type, gfp_t gfpflags); -extern int scsi_device_quiesce(struct scsi_device *sdev); -extern void scsi_device_resume(struct scsi_device *sdev); -extern void scsi_target_quiesce(struct scsi_target *); -extern void scsi_target_resume(struct scsi_target *); -extern void scsi_scan_target(struct device *parent, unsigned int channel, - unsigned int id, unsigned int lun, int rescan); -extern void scsi_target_reap(struct scsi_target *); -extern void scsi_target_block(struct device *); -extern void scsi_target_unblock(struct device *); -extern void scsi_remove_target(struct device *); -extern void int_to_scsilun(unsigned int, struct scsi_lun *); -extern int scsilun_to_int(struct scsi_lun *); -extern const char *scsi_device_state_name(enum scsi_device_state); -extern int scsi_is_sdev_device(const struct device *); -extern int scsi_is_target_device(const struct device *); -extern int scsi_execute(struct scsi_device *sdev, const unsigned char *cmd, - int data_direction, void *buffer, unsigned bufflen, - unsigned char *sense, int timeout, int retries, - int flag, int *resid); -extern int scsi_execute_req(struct scsi_device *sdev, const unsigned char *cmd, - int data_direction, void *buffer, unsigned bufflen, - struct scsi_sense_hdr *, int timeout, int retries, - int *resid); - -#ifdef CONFIG_PM_RUNTIME -extern int scsi_autopm_get_device(struct scsi_device *); -extern void scsi_autopm_put_device(struct scsi_device *); -#else -static inline int scsi_autopm_get_device(struct scsi_device *d) { return 0; } -static inline void scsi_autopm_put_device(struct scsi_device *d) {} -#endif /* CONFIG_PM_RUNTIME */ - -static inline int __must_check scsi_device_reprobe(struct scsi_device *sdev) -{ - return device_reprobe(&sdev->sdev_gendev); -} - -static inline unsigned int sdev_channel(struct scsi_device *sdev) -{ - return sdev->channel; -} - -static inline unsigned int sdev_id(struct scsi_device *sdev) -{ - return sdev->id; -} - -#define scmd_id(scmd) sdev_id((scmd)->device) -#define scmd_channel(scmd) sdev_channel((scmd)->device) - -/* - * checks for positions of the SCSI state machine - */ -static inline int scsi_device_online(struct scsi_device *sdev) -{ - return (sdev->sdev_state != SDEV_OFFLINE && - sdev->sdev_state != SDEV_DEL); -} -static inline int scsi_device_blocked(struct scsi_device *sdev) -{ - return sdev->sdev_state == SDEV_BLOCK || - sdev->sdev_state == SDEV_CREATED_BLOCK; -} -static inline int scsi_device_created(struct scsi_device *sdev) -{ - return sdev->sdev_state == SDEV_CREATED || - sdev->sdev_state == SDEV_CREATED_BLOCK; -} - -/* accessor functions for the SCSI parameters */ -static inline int scsi_device_sync(struct scsi_device *sdev) -{ - return sdev->sdtr; -} -static inline int scsi_device_wide(struct scsi_device *sdev) -{ - return sdev->wdtr; -} -static inline int scsi_device_dt(struct scsi_device *sdev) -{ - return sdev->ppr; -} -static inline int scsi_device_dt_only(struct scsi_device *sdev) -{ - if (sdev->inquiry_len < 57) - return 0; - return (sdev->inquiry[56] & 0x0c) == 0x04; -} -static inline int scsi_device_ius(struct scsi_device *sdev) -{ - if (sdev->inquiry_len < 57) - return 0; - return sdev->inquiry[56] & 0x01; -} -static inline int scsi_device_qas(struct scsi_device *sdev) -{ - if (sdev->inquiry_len < 57) - return 0; - return sdev->inquiry[56] & 0x02; -} -static inline int scsi_device_enclosure(struct scsi_device *sdev) -{ - return sdev->inquiry ? (sdev->inquiry[6] & (1<<6)) : 1; -} - -static inline int scsi_device_protection(struct scsi_device *sdev) -{ - return sdev->scsi_level > SCSI_2 && sdev->inquiry[5] & (1<<0); -} - -static inline int scsi_device_tpgs(struct scsi_device *sdev) -{ - return sdev->inquiry ? (sdev->inquiry[5] >> 4) & 0x3 : 0; -} - -#define MODULE_ALIAS_SCSI_DEVICE(type) \ - MODULE_ALIAS("scsi:t-" __stringify(type) "*") -#define SCSI_DEVICE_MODALIAS_FMT "scsi:t-0x%02x" - -#endif /* _SCSI_SCSI_DEVICE_H */ |