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2011-01-31blockdev: Fix regression in -drive if=scsi,index=NMarkus Armbruster
Before commit 622b520f, index=12 meant bus=1,unit=5. Since the commit, it means bus=0,unit=12. The drive is created, but not the guest device. That's because the controllers we use with if=scsi drives (lsi53c895a and esp) support only 7 units, and scsi_bus_legacy_handle_cmdline() ignores drives with unit numbers exceeding that limit. Changing the mapping of index to bus, unit is a regression. Breaking -drive invocations that used to work just makes it worse. Revert the part of commit 622b520f that causes this, and clean up some. Note that the fix only affects if=scsi. You can still put more than 7 units on a SCSI bus with -device & friends. Signed-off-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-01-24scsi: Allow scsi_bus_legacy_add_drive() to set removable bitStefan Hajnoczi
scsi-disk devices may wish to override the removable bit. Add support for a qdev property on SCSI devices. This is will be used by usb-msd. Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2010-11-25scsi: Move sense handling into the driverHannes Reinecke
The current sense handling in scsi-bus is only used by the scsi-disk driver; the scsi-generic driver is using its own. So we should move the current sense handling into the scsi-disk driver. Signed-off-by: Hannes Reinecke <hare@suse.de> Acked-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2010-11-25scsi: Increase the number of possible devicesHannes Reinecke
The SCSI parallel interface has a limit of 8 devices, but not the SCSI stack in general. So we should be removing the hard-coded limit and use MAX_SCSI_DEVS instead. And we only need to scan those devices which are allocated by the bus. Signed-off-by: Hannes Reinecke <hare@suse.de> Acked-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2010-07-22scsi: Dequeue requests before invoking completion callbackJan Kiszka
The request completion callback of the LSI controller may start the next request that can use the same tag as the completed one. As the latter is still enqueued at that point, scsi_send_command will complain about the tag reuse and cancel the completed request. That will cause a double free later on when the completion path cleans up as well. Fix this by dequeuing the request before invoking the callback. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-07-02qdev: Decouple qdev_prop_drive from DriveInfoMarkus Armbruster
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: Markus Armbruster <armbru@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2010-07-02scsi: scsi_bus_legacy_handle_cmdline() can fail, fix callersMarkus Armbruster
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: Markus Armbruster <armbru@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2010-02-10block: add topology qdev propertiesChristoph Hellwig
Add three new qdev properties to export block topology information to the guest. This is needed to get optimal I/O alignment for RAID arrays or SSDs. The options are: - physical_block_size to specify the physical block size of the device, this is going to increase from 512 bytes to 4096 kilobytes for many modern storage devices - min_io_size to specify the minimal I/O size without performance impact, this is typically set to the RAID chunk size for arrays. - opt_io_size to specify the optimal sustained I/O size, this is typically the RAID stripe width for arrays. I decided to not auto-probe these values from blkid which might easily be possible as I don't know how to deal with these issues on migration. Note that we specificly only set the physical_block_size, and not the logial one which is the unit all I/O is described in. The reason for that is that IDE does not support increasing the logical block size and at last for now I want to stick to one meachnisms in queue and allow for easy switching of transports for a given backing image which would not be possible if scsi and virtio use real 4k sectors, while ide only uses the physical block exponent. To make this more common for the different block drivers introduce a new BlockConf structure holding all common block properties and a DEFINE_BLOCK_PROPERTIES macro to add them all together, mirroring what is done for network drivers. Also switch over all block drivers to use it, except for the floppy driver which has weird driveA/driveB properties and probably won't require any advanced block options ever. Example usage for a virtio device with 4k physical block size and 8k optimal I/O size: -drive file=scratch.img,media=disk,cache=none,id=scratch \ -device virtio-blk-pci,drive=scratch,physical_block_size=4096,opt_io_size=8192 aliguori: updated patch to take into account BLOCK events Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-12-03scsi: add scsi_req_print()Gerd Hoffmann
Handy for debugging. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-12-03scsi: move status to SCSIRequest.Gerd Hoffmann
Also add and use the scsi_req_complete() helper function for calling the completion callback. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-12-03scsi: move dinfo to SCSIDeviceGerd Hoffmann
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-12-03scsi: move sense to SCSIDevice, create SCSISense struct.Gerd Hoffmann
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-12-03scsi: add xfer modeGerd Hoffmann
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-12-03scsi: add request parsing helpers to common code.Gerd Hoffmann
Add helper functions for scsi request parsing to common code. Getting command length, transfer size, and linear block address is handled. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-12-03scsi: move type from SCSIGenericState to SCSIDeviceGerd Hoffmann
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-12-03scsi: move blocksize from SCSIGenericState to SCSIDeviceGerd Hoffmann
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-12-03scsi: move scsi command buffer from SCSIGenericReq to SCSIRequest.Gerd Hoffmann
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-12-03scsi: move SCSIRequest management to common code.Gerd Hoffmann
Create generic functions to allocate, find and release SCSIRequest structs. Make scsi-disk and scsi-generic use them. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-12-03scsi: move request lists to QTAILQ.Gerd Hoffmann
Changes: * Move from open-coded lists to QTAILQ macros. * Move the struct elements to the common data structures (SCSIDevice + SCSIRequest). * Drop free request pools. * Fix request cleanup in the destroy callback. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-12-03scsi: create common SCSIRequest structure.Gerd Hoffmann
Rename the SCSIRequest structs in scsi-disk.c and scsi-generic.c to SCSIDiskReq and SCSIGenericReq. Create a SCSIRequest struct and move the common elements over. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-12-03scsi: add/fix header protection.Gerd Hoffmann
Also delete the leftover and unused scsi-disk.h file. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-11-09scsi: move scsi-disk.h -> scsi.hGerd Hoffmann
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-11-09scsi: move scsi.h -> esp.hGerd Hoffmann
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-01Revert "Get rid of _t suffix"Anthony Liguori
In the very least, a change like this requires discussion on the list. The naming convention is goofy and it causes a massive merge problem. Something like this _must_ be presented on the list first so people can provide input and cope with it. This reverts commit 99a0949b720a0936da2052cb9a46db04ffc6db29. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-01Get rid of _t suffixmalc
Some not so obvious bits, slirp and Xen were left alone for the time being. Signed-off-by: malc <av1474@comtv.ru>
2009-05-14ESP SCSI qdev conversionPaul Brook
Signed-off-by: Paul Brook <paul@codesourcery.com>
2008-04-09ESP: Add it_shift parameter (Hervé Poussineau)blueswir1
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4186 c046a42c-6fe2-441c-8c8c-71466251a162
2008-03-02Let ESP SCSI adapter to be usable outside sun4m (Herv�oussineau)blueswir1
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4007 c046a42c-6fe2-441c-8c8c-71466251a162
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