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  1. 26 5月, 2011 5 次提交
    • H
      scsi: Use 'SCSIRequest' directly · 5c6c0e51
      由 Hannes Reinecke 提交于 
      Currently the SCSIRequest structure is abstracted away and cannot accessed
directly from the driver. This requires the handler to do a lookup on
an abstract 'tag' which identifies the SCSIRequest structure.

With this patch the SCSIRequest structure is exposed to the driver. This
allows use to use it directly as an argument to the SCSIDeviceInfo
callback functions and remove the lookup.

A new callback function 'alloc_req' is introduced matching 'free
req'; unref'ing to free up resources after use is moved into the
scsi_command_complete callbacks.

This temporarily introduces a leak of requests that are cancelled,
when they are removed from the queue and not from the driver.  This
is fixed later by introducing scsi_req_cancel.  That patch in turn
depends on this one, because the argument to scsi_req_cancel is a
SCSIRequest.
Signed-off-by: NHannes Reinecke <hare@suse.de>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
Reviewed-by: NChristoph Hellwig <hch@lst.de>
      5c6c0e51
    • P
      scsi: reference-count requests · ad2d30f7
      由 Paolo Bonzini 提交于 
      With the next patch, a device may hold SCSIRequest for an indefinite
time.  Split a rather big patch, and protect against access errors,
by reference counting them.

There is some ugliness in scsi_send_command implementation due to
the need to unref the request when it fails.  This will go away
with the next patches, which move the unref'ing to the devices.
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
Cc: Christoph Hellwig <hch@lst.de>
      ad2d30f7
    • P
      scsi: introduce SCSIBusOps · cfdc1bb0
      由 Paolo Bonzini 提交于 
      There are more operations than a SCSI bus can handle, besides completing
commands.  One example, which this series will introduce, is cleaning up
after a request is cancelled.

More long term, a "SCSI bus" can represent the LUNs attached to a
target; in this case, while all commands will ultimately reach a logical
unit, it is the target who is in charge of answering REPORT LUNs.
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
Cc: Christoph Hellwig <hch@lst.de>
      cfdc1bb0
    • P
      scsi: introduce scsi_req_data · ab9adc88
      由 Paolo Bonzini 提交于 
      This abstracts calling the command_complete callback, reducing churn
in the following patches.
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
Reviewed-by: NChristoph Hellwig <hch@lst.de>
      ab9adc88
    • P
      scsi: add tracing of scsi requests · 5138efec
      由 Paolo Bonzini 提交于 
      Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
Reviewed-by: NChristoph Hellwig <hch@lst.de>
      5138efec
  3. 25 1月, 2011 1 次提交
  5. 12 12月, 2010 1 次提交
  7. 25 11月, 2010 2 次提交
  9. 21 9月, 2010 1 次提交
  11. 24 8月, 2010 1 次提交
    • B
      Rearrange block headers · 2446333c
      由 Blue Swirl 提交于 
      Changing block.h or blockdev.h resulted in recompiling most objects.

Move DriveInfo typedef and BlockInterfaceType enum definitions
to qemu-common.h and rearrange blockdev.h use to decrease churn.
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>
      2446333c
  13. 22 7月, 2010 1 次提交
  15. 06 7月, 2010 1 次提交
  17. 02 7月, 2010 3 次提交
    • M
      block: Catch attempt to attach multiple devices to a blockdev · 18846dee
      由 Markus Armbruster 提交于 
      For instance, -device scsi-disk,drive=foo -device scsi-disk,drive=foo
happily creates two SCSI disks connected to the same block device.
It's all downhill from there.

Device usb-storage deliberately attaches twice to the same blockdev,
which fails with the fix in place.  Detach before the second attach
there.

Also catch attempt to delete while a guest device model is attached.
Signed-off-by: NMarkus Armbruster <armbru@redhat.com>
Signed-off-by: NKevin Wolf <kwolf@redhat.com>
      18846dee
    • M
      qdev: Decouple qdev_prop_drive from DriveInfo · f8b6cc00
      由 Markus Armbruster 提交于 
      Make the property point to BlockDriverState, cutting out the DriveInfo
middleman.  This prepares the ground for block devices that don't have
a DriveInfo.

Currently all user-defined ones have a DriveInfo, because the only way
to define one is -drive & friends (they go through drive_init()).
DriveInfo is closely tied to -drive, and like -drive, it mixes
information about host and guest part of the block device.  I'm
working towards a new way to define block devices, with clean
host/guest separation, and I need to get DriveInfo out of the way for
that.

Fortunately, the device models are perfectly happy with
BlockDriverState, except for two places: ide_drive_initfn() and
scsi_disk_initfn() need to check the DriveInfo for a serial number set
with legacy -drive serial=...  Use drive_get_by_blockdev() there.

Device model code should now use DriveInfo only when explicitly
dealing with drives defined the old way, i.e. without -device.
Signed-off-by: NMarkus Armbruster <armbru@redhat.com>
Reviewed-by: NChristoph Hellwig <hch@lst.de>
Signed-off-by: NKevin Wolf <kwolf@redhat.com>
      f8b6cc00
    • M
      scsi: scsi_bus_legacy_handle_cmdline() can fail, fix callers · fa66b909
      由 Markus Armbruster 提交于 
      None of its callers checks for failure.  scsi_hot_add() can crash
because of that:

(qemu) drive_add 4 if=scsi,format=host_device,file=/dev/sg1
scsi-generic: scsi generic interface too old
Segmentation fault (core dumped)

Fix all callers, not just scsi_hot_add().
Signed-off-by: NMarkus Armbruster <armbru@redhat.com>
Signed-off-by: NKevin Wolf <kwolf@redhat.com>
      fa66b909
  19. 22 6月, 2010 2 次提交
  21. 04 6月, 2010 1 次提交
  23. 16 3月, 2010 2 次提交
  25. 26 12月, 2009 1 次提交
  27. 03 12月, 2009 11 次提交
  29. 09 11月, 2009 1 次提交
  31. 07 10月, 2009 1 次提交
  33. 05 10月, 2009 3 次提交
  35. 10 9月, 2009 1 次提交