#include <asm/ccwdev.h>
#include <linux/atomic.h>
#include <linux/wait.h>
#include <linux/notifier.h>
#include <linux/kernel_stat.h>
#include "io_sch.h"
Go to the source code of this file.
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| enum | dev_state {
DEV_STATE_UNINIT,
DEV_STATE_INIT,
DEV_STATE_ERR,
STATE_DEEP_SLEEP = 0,
STATE_SLEEP = 1,
STATE_STANDBY = 2,
STATE_AWAKE = 3,
STATE_RADIO_ON,
STATE_RADIO_OFF,
STATE_RADIO_IRQ_ON,
STATE_RADIO_IRQ_OFF,
DEV_STATE_NOT_OPER,
DEV_STATE_SENSE_PGID,
DEV_STATE_SENSE_ID,
DEV_STATE_OFFLINE,
DEV_STATE_VERIFY,
DEV_STATE_ONLINE,
DEV_STATE_W4SENSE,
DEV_STATE_DISBAND_PGID,
DEV_STATE_BOXED,
DEV_STATE_TIMEOUT_KILL,
DEV_STATE_QUIESCE,
DEV_STATE_DISCONNECTED,
DEV_STATE_DISCONNECTED_SENSE_ID,
DEV_STATE_CMFCHANGE,
DEV_STATE_CMFUPDATE,
DEV_STATE_STEAL_LOCK,
NR_DEV_STATES
} |
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| enum | dev_event {
DEV_EVENT_NOTOPER,
DEV_EVENT_INTERRUPT,
DEV_EVENT_TIMEOUT,
DEV_EVENT_VERIFY,
NR_DEV_EVENTS
} |
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| int __init | io_subchannel_init (void) |
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| void | io_subchannel_recog_done (struct ccw_device *cdev) |
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| void | io_subchannel_init_config (struct subchannel *sch) |
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| int | ccw_device_cancel_halt_clear (struct ccw_device *) |
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| int | ccw_device_is_orphan (struct ccw_device *) |
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| void | ccw_device_recognition (struct ccw_device *) |
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| int | ccw_device_online (struct ccw_device *) |
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| int | ccw_device_offline (struct ccw_device *) |
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| void | ccw_device_update_sense_data (struct ccw_device *) |
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| int | ccw_device_test_sense_data (struct ccw_device *) |
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| void | ccw_device_schedule_sch_unregister (struct ccw_device *) |
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| int | ccw_purge_blacklisted (void) |
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| void | ccw_device_sched_todo (struct ccw_device *cdev, enum cdev_todo todo) |
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| struct ccw_device * | get_ccwdev_by_dev_id (struct ccw_dev_id *dev_id) |
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| void | ccw_device_accumulate_irb (struct ccw_device *, struct irb *) |
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| void | ccw_device_accumulate_basic_sense (struct ccw_device *, struct irb *) |
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| int | ccw_device_accumulate_and_sense (struct ccw_device *, struct irb *) |
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| int | ccw_device_do_sense (struct ccw_device *, struct irb *) |
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| int | lpm_adjust (int lpm, int mask) |
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| void | ccw_request_start (struct ccw_device *) |
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| int | ccw_request_cancel (struct ccw_device *cdev) |
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| void | ccw_request_handler (struct ccw_device *cdev) |
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| void | ccw_request_timeout (struct ccw_device *cdev) |
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| void | ccw_request_notoper (struct ccw_device *cdev) |
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| void | ccw_device_sense_id_start (struct ccw_device *) |
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| void | ccw_device_sense_id_done (struct ccw_device *, int) |
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| void | ccw_device_verify_start (struct ccw_device *) |
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| void | ccw_device_verify_done (struct ccw_device *, int) |
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| void | ccw_device_disband_start (struct ccw_device *) |
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| void | ccw_device_disband_done (struct ccw_device *, int) |
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| void | ccw_device_stlck_start (struct ccw_device *, void *, void *, void *) |
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| void | ccw_device_stlck_done (struct ccw_device *, void *, int) |
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| int | ccw_device_call_handler (struct ccw_device *) |
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| int | ccw_device_stlck (struct ccw_device *) |
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| void | ccw_device_trigger_reprobe (struct ccw_device *) |
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| void | ccw_device_kill_io (struct ccw_device *) |
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| int | ccw_device_notify (struct ccw_device *, int) |
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| void | ccw_device_set_disconnected (struct ccw_device *cdev) |
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| void | ccw_device_set_notoper (struct ccw_device *cdev) |
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| void | ccw_device_set_timeout (struct ccw_device *, int) |
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| struct subchannel_id | ccw_device_get_subchannel_id (struct ccw_device *) |
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| void | retry_set_schib (struct ccw_device *cdev) |
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| void | cmf_retry_copy_block (struct ccw_device *) |
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| int | cmf_reenable (struct ccw_device *) |
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| int | ccw_set_cmf (struct ccw_device *cdev, int enable) |
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- Enumerator:
| DEV_EVENT_NOTOPER |
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| DEV_EVENT_INTERRUPT |
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| DEV_EVENT_TIMEOUT |
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| DEV_EVENT_VERIFY |
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| NR_DEV_EVENTS |
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Definition at line 40 of file device.h.
- Enumerator:
| DEV_STATE_UNINIT |
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| DEV_STATE_INIT |
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| DEV_STATE_ERR |
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| STATE_DEEP_SLEEP |
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| STATE_SLEEP |
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| STATE_STANDBY |
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| STATE_AWAKE |
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| STATE_RADIO_ON |
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| STATE_RADIO_OFF |
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| STATE_RADIO_IRQ_ON |
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| STATE_RADIO_IRQ_OFF |
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| DEV_STATE_NOT_OPER |
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| DEV_STATE_SENSE_PGID |
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| DEV_STATE_SENSE_ID |
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| DEV_STATE_OFFLINE |
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| DEV_STATE_VERIFY |
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| DEV_STATE_ONLINE |
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| DEV_STATE_W4SENSE |
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| DEV_STATE_DISBAND_PGID |
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| DEV_STATE_BOXED |
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| DEV_STATE_TIMEOUT_KILL |
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| DEV_STATE_QUIESCE |
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| DEV_STATE_DISCONNECTED |
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| DEV_STATE_DISCONNECTED_SENSE_ID |
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| DEV_STATE_CMFCHANGE |
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| DEV_STATE_CMFUPDATE |
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| DEV_STATE_STEAL_LOCK |
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| NR_DEV_STATES |
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Definition at line 14 of file device.h.
ccw_device_disband_start - disband pathgroup : ccw device
Execute a SET PGID channel program on to disband a previously established pathgroup. When finished, call ccw_device_disband_done with a return code specifying the result.
Definition at line 510 of file device_pgid.c.
ccw_device_notify() - inform the device's driver about an event : device for which an event occurred : event that occurred
Returns: -EINVAL if the device is offline or has no driver. -EOPNOTSUPP if the device's driver has no notifier registered. NOTIFY_OK if the driver wants to keep the device. NOTIFY_BAD if the driver doesn't want to keep the device.
Definition at line 329 of file device_fsm.c.
ccw_device_sched_todo - schedule ccw device operation : ccw device
- Todo:
- : todo
Schedule the operation identified by
- Todo:
- to be performed on the slow path workqueue. Do nothing if another operation with higher priority is already scheduled. Needs to be called with ccwdev lock held.
Definition at line 2103 of file device.c.
ccw_device_sense_id_start - perform SENSE ID : ccw device
Execute a SENSE ID channel program on to update its sense id information. When finished, call ccw_device_sense_id_done with a return code specifying the result.
Definition at line 198 of file device_id.c.
ccw_device_stlck_start - perform unconditional release : ccw device : data pointer to be passed to ccw_device_stlck_done : data pointer used in channel program : data pointer used in channel program
Execute a channel program on to release an existing PGID reservation. When finished, call ccw_device_stlck_done with a return code specifying the result.
Definition at line 564 of file device_pgid.c.
ccw_device_verify_start - perform path verification : ccw device
Perform an I/O on each available channel path to to determine which paths are operational. The resulting path mask is stored in sch->vpm. If device options specify pathgrouping, establish a pathgroup for the operational paths. When finished, call ccw_device_verify_done with a return code specifying the result.
Definition at line 460 of file device_pgid.c.
ccw_purge_blacklisted - purge unused, blacklisted devices
Unregister all ccw devices that are offline and on the blacklist.
Definition at line 1358 of file device.c.
ccw_request_cancel - cancel running I/O request : ccw device
Cancel the I/O request specified by cdev->req. Return non-zero if request has already finished, zero otherwise.
Definition at line 150 of file ccwreq.c.
ccw_request_handler - interrupt handler for I/O request procedure. : ccw device
Handle interrupt during I/O request procedure.
Definition at line 253 of file ccwreq.c.
ccw_request_notoper - notoper handler for I/O request procedure : ccw device
Handle notoper during I/O request procedure.
Definition at line 364 of file ccwreq.c.
ccw_request_start - perform I/O request : ccw device
Perform the I/O request specified by cdev->req.
Definition at line 119 of file ccwreq.c.
ccw_request_timeout - timeout handler for I/O request procedure : ccw device
Handle timeout during I/O request procedure.
Definition at line 325 of file ccwreq.c.
get_ccwdev_by_dev_id() - obtain device from a ccw device id : id of the device to be searched
This function searches all devices attached to the ccw bus for a device matching . Returns: If a device is found its reference count is increased and returned; else NULL is returned.
Definition at line 707 of file device.c.
lpm_adjust - adjust path mask : path mask to adjust : mask of available paths
Shift right until and have at least one bit in common or until is zero. Return the resulting lpm.
Definition at line 29 of file ccwreq.c.
1.8.2