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path: root/hw/scsi-generic.c
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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: 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: add scsi-defs.hGerd Hoffmann
Largely based on <scsi/scsi.h> from linux. Added into the tree so we can use the defines everywhere, not just in scsi-generic.c (which is linux-specific). 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>
2009-12-02Fix qemu_free use in scsi-generic.cJean-Christophe DUBOIS
scsi-generic.c is using free() instead of qemu_free(). Fix it. Signed-off-by: Jean-Christophe DUBOIS <jcd@tribudubois.net> 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>
2009-10-05drive cleanup fixes.Gerd Hoffmann
Changes: * drive_uninit() wants a DriveInfo now. * drive_uninit() also calls bdrv_delete(), so callers don't need to do that. * drive_uninit() calls are moved over to the ->exit() callbacks, destroy_bdrvs() is zapped. * setting bdrv->private is not needed any more as the only user (destroy_bdrvs) is gone. * usb-storage needs no drive_uninit, scsi-disk will handle that. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-05Implement scsi device destructionGerd Hoffmann
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-09-09qdev/scsi: add scsi bus support to qdev, convert drivers.Gerd Hoffmann
* Add SCSIBus. * Add SCSIDeviceInfo, move device callbacks here. * add qdev/scsi helper functions. * convert drivers. Adding scsi disks via -device works now, i.e. you can do: -drive id=sda,if=none,... -device lsi -device scsi-disk,drive=sda legacy command lines (-drive if=scsi,...) continue to work. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-05-13Replace gcc variadic macro extension with C99 versionBlue Swirl
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2009-03-28new scsi-generic abstraction, use SG_IO (Christoph Hellwig)aliguori
Okay, I started looking into how to handle scsi-generic I/O in the new world order. I think the best is to use the SG_IO ioctl instead of the read/write interface as that allows us to support scsi passthrough on disk/cdrom devices, too. See Hannes patch on the kvm list from August for an example. Now that we always do ioctls we don't need another abstraction than bdrv_ioctl for the synchronous requests for now, and for asynchronous requests I've added a aio_ioctl abstraction keeping it simple. Long-term we might want to move the ops to a higher-level abstraction and let the low-level code fill out the request header, but I'm lazy enough to leave that to the people trying to support scsi-passthrough on a non-Linux OS. Tested lightly by issuing various sg_ commands from sg3-utils in a guest to a host CDROM device. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6895 c046a42c-6fe2-441c-8c8c-71466251a162
2009-03-12Add specialized block driver scsi generic API (Avi Kivity)aliguori
When a scsi device is backed by a scsi generic device instead of an ordinary host block device, the block API is abused in a couple of annoying ways: - nb_sectors is negative, and specifies a byte count instead of a sector count - offset is ignored, since scsi-generic is essentially a packet protocol This overloading makes hacking the block layer difficult. Remove it by introducing a new explicit API for scsi-generic devices. The new API is still backed by the old implementation, but at least the users are insulated. Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6822 c046a42c-6fe2-441c-8c8c-71466251a162
2008-10-17scsi-generic: correct error managementaurel32
this patch allows to fully use a tape device connected to qemu through the scsi-generic interface. Previous patch introduced tape SCSI commands management, this one improve error case management: - the SCSI controller command completion must be called with the status value, not the sense value. In the case of scsi-generic, the SCSI status is given by the field status of sg_io_hdr_t (the value is left shifted by one regarding status codes defined in /usr/include/scsi/scsi.h) - when a read is aborted due to a mark/EOF/EOD/EOM, the len reported to controller can be 0. LSI controller emulation doesn't know how to manage this. A workaround found is to call the completion routine with SCSI_REASON_DONE just after calling it with SCSI_REASON_DATA with len=0. This patch also manages correctly the block size of the tape device. This patch has been tested with a real tape device "HP C5683A", linux guest (debian etch) and tools like "mt", "tar" and "btape". Windows guest is not better supported than before... Signed-off-by: Laurent Vivier <Laurent.Vivier@bull.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5497 c046a42c-6fe2-441c-8c8c-71466251a162
2008-09-23scsi-generic: decode correctly SCSI tape commands (Laurent Vivier)aliguori
This patch allows to use a "real" SCSI tape with qemu using "-drive /dev/sgX,if=scsi". It allows to decode correctly transfer length when the type of the device is a tape. Some issues remain when the application reading the tape tries to go beyond the end of the stream (but they must be corrected at the SCSI controller level). Signed-off-by: Laurent Vivier <Laurent.Vivier@bull.net> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5305 c046a42c-6fe2-441c-8c8c-71466251a162
2008-09-22scsi-generic: correct 6-bytes commands transfer length (Laurent Vivier)aliguori
According to SCSI documentation, for 6 bytes commands (READ(6), WRITE(6)), if transfer length is 0 it specifies 256 blocks. Signed-off-by: Laurent Vivier <Laurent.Vivier@bull.net> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5292 c046a42c-6fe2-441c-8c8c-71466251a162
2008-09-22scsi-generic: correct usage of memset() (Laurent Vivier)aliguori
void *memset(void *s, int c, size_t n); DESCRIPTION The memset() function fills the first n bytes of the memory area pointed to by s with the constant byte c." Reported by Dietmar Maurer. Signed-off-by: Laurent Vivier <Laurent.Vivier@bull.net> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5291 c046a42c-6fe2-441c-8c8c-71466251a162
2008-09-02suppress a couple of spurious warnings in scsi-generic.caurel32
This patch fixes two spurious `may be used uninitialised' warnings when compiling with some compilers. Signed-off-by: Andre Przywara <andre.przywara@amd.com> Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5127 c046a42c-6fe2-441c-8c8c-71466251a162
2007-12-24scsi-generic implemnentation, missing in last commit.ths
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3852 c046a42c-6fe2-441c-8c8c-71466251a162
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