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Linux Kernel
3.7.1
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All Data Structures Namespaces Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
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Linux Kernel
3.7.1
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#include <linux/slab.h>#include <linux/kernel.h>#include <linux/blkdev.h>#include <linux/spinlock.h>#include <linux/export.h>#include <scsi/scsi.h>#include <scsi/scsi_host.h>#include <scsi/scsi_cmnd.h>#include <scsi/scsi_eh.h>#include <scsi/scsi_device.h>#include <scsi/scsi_tcq.h>#include <scsi/scsi_transport.h>#include <linux/libata.h>#include <linux/hdreg.h>#include <linux/uaccess.h>#include <linux/suspend.h>#include <asm/unaligned.h>#include "libata.h"#include "libata-transport.h"Go to the source code of this file.
Macros | |
| #define | ATA_SCSI_RBUF_SIZE 4096 |
| #define | RW_RECOVERY_MPAGE 0x1 |
| #define | RW_RECOVERY_MPAGE_LEN 12 |
| #define | CACHE_MPAGE 0x8 |
| #define | CACHE_MPAGE_LEN 20 |
| #define | CONTROL_MPAGE 0xa |
| #define | CONTROL_MPAGE_LEN 12 |
| #define | ALL_MPAGES 0x3f |
| #define | ALL_SUB_MPAGES 0xff |
Typedefs | |
| typedef unsigned int(* | ata_xlat_func_t )(struct ata_queued_cmd *qc) |
Variables | |
| struct device_attribute * | ata_common_sdev_attrs [] |
| #define ALL_MPAGES 0x3f |
Definition at line 75 of file libata-scsi.c.
| #define ALL_SUB_MPAGES 0xff |
Definition at line 76 of file libata-scsi.c.
| #define ATA_SCSI_RBUF_SIZE 4096 |
Definition at line 57 of file libata-scsi.c.
| #define CACHE_MPAGE 0x8 |
Definition at line 71 of file libata-scsi.c.
| #define CACHE_MPAGE_LEN 20 |
Definition at line 72 of file libata-scsi.c.
| #define CONTROL_MPAGE 0xa |
Definition at line 73 of file libata-scsi.c.
| #define CONTROL_MPAGE_LEN 12 |
Definition at line 74 of file libata-scsi.c.
| #define RW_RECOVERY_MPAGE 0x1 |
Definition at line 69 of file libata-scsi.c.
| #define RW_RECOVERY_MPAGE_LEN 12 |
Definition at line 70 of file libata-scsi.c.
| typedef unsigned int(* ata_xlat_func_t)(struct ata_queued_cmd *qc) |
Definition at line 62 of file libata-scsi.c.
| int __ata_change_queue_depth | ( | struct ata_port * | ap, |
| struct scsi_device * | sdev, | ||
| int | queue_depth, | ||
| int | reason | ||
| ) |
__ata_change_queue_depth - helper for ata_scsi_change_queue_depth : ATA port to which the device change the queue depth : SCSI device to configure queue depth for : new queue depth : calling context
libsas and libata have different approaches for associating a sdev to its ata_port.
Definition at line 1231 of file libata-scsi.c.
| int ata_cmd_ioctl | ( | struct scsi_device * | scsidev, |
| void __user * | arg | ||
| ) |
ata_cmd_ioctl - Handler for HDIO_DRIVE_CMD ioctl : Device to which we are issuing command
LOCKING: Defined by the SCSI layer. We don't really care.
RETURNS: Zero on success, negative errno on error.
Definition at line 466 of file libata-scsi.c.
ata_sas_async_probe - simply schedule probing and return : Port to probe
For batch scheduling of probe for sas attached ata devices, assumes the port has already been through ata_sas_port_init()
Definition at line 4063 of file libata-scsi.c.
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read |
ata_sas_port_alloc - Allocate port for a SAS attached SATA device : ATA host container for all SAS ports : Information from low-level host driver : SCSI host that the scsi device is attached to
LOCKING: PCI/etc. bus probe sem.
RETURNS: ata_port pointer on success / NULL on failure.
Definition at line 3994 of file libata-scsi.c.
ata_sas_port_destroy - Destroy a SATA port allocated by ata_sas_port_alloc : SATA port to destroy
Definition at line 4104 of file libata-scsi.c.
ata_sas_port_init - Initialize a SATA device : SATA port to initialize
LOCKING: PCI/etc. bus probe sem.
RETURNS: Zero on success, non-zero on error.
Definition at line 4087 of file libata-scsi.c.
ata_sas_port_start - Set port up for dma. : Port to initialize
Called just after data structures for each port are initialized.
May be used as the port_start() entry in ata_port_operations.
LOCKING: Inherited from caller.
Definition at line 4029 of file libata-scsi.c.
ata_port_stop - Undo ata_sas_port_start() : Port to shut down
May be used as the port_stop() entry in ata_port_operations.
LOCKING: Inherited from caller.
Definition at line 4051 of file libata-scsi.c.
ata_sas_queuecmd - Issue SCSI cdb to libata-managed device : SCSI command to be sent : ATA port to which the command is being sent
RETURNS: Return value from __ata_scsi_queuecmd() if can be queued, 0 otherwise.
Definition at line 4139 of file libata-scsi.c.
| int ata_sas_scsi_ioctl | ( | struct ata_port * | ap, |
| struct scsi_device * | scsidev, | ||
| int | cmd, | ||
| void __user * | arg | ||
| ) |
Definition at line 658 of file libata-scsi.c.
| int ata_sas_slave_configure | ( | struct scsi_device * | sdev, |
| struct ata_port * | ap | ||
| ) |
ata_sas_slave_configure - Default slave_config routine for libata devices : SCSI device to configure : ATA port to which SCSI device is attached
RETURNS: Zero.
Definition at line 4121 of file libata-scsi.c.
Definition at line 4069 of file libata-scsi.c.
| int ata_scsi_add_hosts | ( | struct ata_host * | host, |
| struct scsi_host_template * | sht | ||
| ) |
Definition at line 3582 of file libata-scsi.c.
| int ata_scsi_change_queue_depth | ( | struct scsi_device * | sdev, |
| int | queue_depth, | ||
| int | reason | ||
| ) |
ata_scsi_change_queue_depth - SCSI callback for queue depth config : SCSI device to configure queue depth for : new queue depth : calling context
This is libata standard hostt->change_queue_depth callback. SCSI will call into this callback when user tries to set queue depth via sysfs.
LOCKING: SCSI layer (we don't care)
RETURNS: Newly configured queue depth.
Definition at line 1284 of file libata-scsi.c.
| void ata_scsi_dev_rescan | ( | struct work_struct * | work | ) |
ata_scsi_dev_rescan - initiate scsi_rescan_device() : Pointer to ATA port to perform scsi_rescan_device()
After ATA pass thru (SAT) commands are executed successfully, libata need to propagate the changes to SCSI layer.
LOCKING: Kernel thread context (may sleep).
Definition at line 3950 of file libata-scsi.c.
| void ata_scsi_hotplug | ( | struct work_struct * | work | ) |
ata_scsi_hotplug - SCSI part of hotplug : Pointer to ATA port to perform SCSI hotplug on
Perform SCSI part of hotplug. It's executed from a separate workqueue after EH completes. This is necessary because SCSI hot plugging requires working EH and hot unplugging is synchronized with hot plugging with a mutex.
LOCKING: Kernel thread context (may sleep).
Definition at line 3840 of file libata-scsi.c.
Definition at line 711 of file libata-scsi.c.
| void ata_scsi_media_change_notify | ( | struct ata_device * | dev | ) |
ata_scsi_media_change_notify - send media change event : Pointer to the disk device with media change event
Tell the block layer to send a media change notification event.
LOCKING: spin_lock_irqsave(host lock)
Definition at line 3821 of file libata-scsi.c.
| int ata_scsi_offline_dev | ( | struct ata_device * | dev | ) |
ata_scsi_offline_dev - offline attached SCSI device : ATA device to offline attached SCSI device for
This function is called from ata_eh_hotplug() and responsible for taking the SCSI device attached to offline. This function is called with host lock which protects dev->sdev against clearing.
LOCKING: spin_lock_irqsave(host lock)
RETURNS: 1 if attached SCSI device exists, 0 otherwise.
Definition at line 3722 of file libata-scsi.c.
ata_scsi_queuecmd - Issue SCSI cdb to libata-managed device : SCSI host of command to be sent : SCSI command to be sent
In some cases, this function translates SCSI commands into ATA taskfiles, and queues the taskfiles to be sent to hardware. In other cases, this function simulates a SCSI device by evaluating and responding to certain SCSI commands. This creates the overall effect of ATA and ATAPI devices appearing as SCSI devices.
LOCKING: ATA host lock
RETURNS: Return value from __ata_scsi_queuecmd() if can be queued, 0 otherwise.
Definition at line 3436 of file libata-scsi.c.
Definition at line 3633 of file libata-scsi.c.
| void ata_scsi_simulate | ( | struct ata_device * | dev, |
| struct scsi_cmnd * | cmd | ||
| ) |
ata_scsi_simulate - simulate SCSI command on ATA device : the target device : SCSI command being sent to device.
Interprets and directly executes a select list of SCSI commands that can be handled internally.
LOCKING: spin_lock_irqsave(host lock)
Definition at line 3475 of file libata-scsi.c.
| int ata_scsi_slave_config | ( | struct scsi_device * | sdev | ) |
ata_scsi_slave_config - Set SCSI device attributes : SCSI device to examine
This is called before we actually start reading and writing to the device, to configure certain SCSI mid-layer behaviors.
LOCKING: Defined by SCSI layer. We don't really care.
Definition at line 1167 of file libata-scsi.c.
| void ata_scsi_slave_destroy | ( | struct scsi_device * | sdev | ) |
ata_scsi_slave_destroy - SCSI device is about to be destroyed : SCSI device to be destroyed
is about to be destroyed for hot/warm unplugging. If this unplugging was initiated by libata as indicated by NULL dev->sdev, this function doesn't have to do anything. Otherwise, SCSI layer initiated warm-unplug is in progress. Clear dev->sdev, schedule the device for ATA detach and invoke EH.
LOCKING: Defined by SCSI layer. We don't really care.
Definition at line 1195 of file libata-scsi.c.
| void ata_scsi_unlock_native_capacity | ( | struct scsi_device * | sdev | ) |
ata_scsi_unlock_native_capacity - unlock native capacity : SCSI device to adjust device capacity for
This function is called if a partition on extends beyond the end of the device. It requests EH to unlock HPA.
LOCKING: Defined by the SCSI layer. Might sleep.
Definition at line 396 of file libata-scsi.c.
| int ata_scsi_user_scan | ( | struct Scsi_Host * | shost, |
| unsigned int | channel, | ||
| unsigned int | id, | ||
| unsigned int | lun | ||
| ) |
ata_scsi_user_scan - indication for user-initiated bus scan : SCSI host to scan : Channel to scan : ID to scan : LUN to scan
This function is called when user explicitly requests bus scan. Set probe pending flag and invoke EH.
LOCKING: SCSI layer (we don't care)
RETURNS: Zero.
Definition at line 3886 of file libata-scsi.c.
| int ata_std_bios_param | ( | struct scsi_device * | sdev, |
| struct block_device * | bdev, | ||
| sector_t | capacity, | ||
| int | geom[] | ||
| ) |
ata_std_bios_param - generic bios head/sector/cylinder calculator used by sd. : SCSI device for which BIOS geometry is to be determined : block device associated with : capacity of SCSI device : location to which geometry will be output
Generic bios head/sector/cylinder calculator used by sd. Most BIOSes nowadays expect a XXX/255/16 (CHS) mapping. Some situations may arise where the disk is not bootable if this is not used.
LOCKING: Defined by the SCSI layer. We don't really care.
RETURNS: Zero.
Definition at line 375 of file libata-scsi.c.
| int ata_task_ioctl | ( | struct scsi_device * | scsidev, |
| void __user * | arg | ||
| ) |
ata_task_ioctl - Handler for HDIO_DRIVE_TASK ioctl : Device to which we are issuing command
LOCKING: Defined by the SCSI layer. We don't really care.
RETURNS: Zero on success, negative errno on error.
Definition at line 575 of file libata-scsi.c.
| DEVICE_ATTR | ( | link_power_management_policy | , |
| S_IRUGO| | S_IWUSR, | ||
| ata_scsi_lpm_show | , | ||
| ata_scsi_lpm_store | |||
| ) |
| DEVICE_ATTR | ( | unload_heads | , |
| S_IRUGO| | S_IWUSR, | ||
| ata_scsi_park_show | , | ||
| ata_scsi_park_store | |||
| ) |
| DEVICE_ATTR | ( | em_message | , |
| S_IRUGO| | S_IWUSR, | ||
| ata_scsi_em_message_show | , | ||
| ata_scsi_em_message_store | |||
| ) |
| DEVICE_ATTR | ( | sw_activity | , |
| S_IWUSR| | S_IRUGO, | ||
| ata_scsi_activity_show | , | ||
| ata_scsi_activity_store | |||
| ) |
| EXPORT_SYMBOL_GPL | ( | dev_attr_link_power_management_policy | ) |
| EXPORT_SYMBOL_GPL | ( | dev_attr_unload_heads | ) |
| EXPORT_SYMBOL_GPL | ( | dev_attr_em_message | ) |
| EXPORT_SYMBOL_GPL | ( | dev_attr_em_message_type | ) |
| EXPORT_SYMBOL_GPL | ( | dev_attr_sw_activity | ) |
| EXPORT_SYMBOL_GPL | ( | ata_common_sdev_attrs | ) |
| EXPORT_SYMBOL_GPL | ( | ata_sas_scsi_ioctl | ) |
| EXPORT_SYMBOL_GPL | ( | ata_scsi_ioctl | ) |
| EXPORT_SYMBOL_GPL | ( | ata_sas_port_alloc | ) |
| EXPORT_SYMBOL_GPL | ( | ata_sas_port_start | ) |
| EXPORT_SYMBOL_GPL | ( | ata_sas_port_stop | ) |
| EXPORT_SYMBOL_GPL | ( | ata_sas_async_probe | ) |
| EXPORT_SYMBOL_GPL | ( | ata_sas_sync_probe | ) |
| EXPORT_SYMBOL_GPL | ( | ata_sas_port_init | ) |
| EXPORT_SYMBOL_GPL | ( | ata_sas_port_destroy | ) |
| EXPORT_SYMBOL_GPL | ( | ata_sas_slave_configure | ) |
| EXPORT_SYMBOL_GPL | ( | ata_sas_queuecmd | ) |
| struct device_attribute* ata_common_sdev_attrs[] |
Definition at line 344 of file libata-scsi.c.
1.8.2