The is the second version of the megasas patchset; changes are: v1 -> v2: - Include suggestions (and acked-by) from Christoph Hellwig - Updated patch description as requested by Gerd Hoffman - Use generic iov_size() implementation - Drop old patches - Make SCSI HBA configurable
This patchset can be found at git://repo.or.cz/qemu/megasas.git branch megasas.v2 The original description was: Due to popular demand here is now the LSI Megaraid HBA emulation. And an update to the SCSI stack to bring it more in line with modern standards. For the SCSI update there are three key points: - Improved sense code handling: the SCSI standard specifies several sense codes to be returned on common errors; we should be following that. - Reworked SCSI layer: Instead of indirectly addressing a SCSI request by an abstract 'tag' we're now using the request directly, thus saving us a lookup on every invocation. - Add iovec passing: I've added an interface to pass an iovec to a SCSI request, so that we don't need to use bounce buffers for data transfer. The old interface is left in place. And, of course, the megasas driver itself. A quick 'dd' comparison against virtio on a tmpfs backed sparse file shows: # dd if=/dev/sdb of=/dev/null bs=16M count=1000 iflag=direct 1000+0 records in 1000+0 records out 16777216000 bytes (17 GB) copied, 9.40123 s, 1.8 GB/s # dd if=/dev/vda of=/dev/null bs=16M count=1000 iflag=direct 1000+0 records in 1000+0 records out 16777216000 bytes (17 GB) copied, 7.44681 s, 2.3 GB/s So we're having about 80% virtio speed. Unoptimized :-) Hannes Reinecke (15): scsi: Increase the number of possible devices scsi: Return SAM status codes scsi: INQUIRY VPD fixes scsi: Move sense handling into the driver scsi-disk: Remove duplicate cdb parsing scsi: Update sense code handling lsi53c895a: Rename 'sense' to 'status' scsi-disk: Allocate iovec dynamically scsi: Use 'SCSIRequest' directly scsi-disk: add data direction checking Remove 'bus' argument from SCSI command completion callbacks scsi: Implement 'get_sense' callback scsi: Implement alloc_req_iov callback megasas: LSI Megaraid SAS emulation Make SCSI HBA configurable Makefile.objs | 5 +- blockdev.h | 2 +- default-configs/i386-softmmu.mak | 2 + default-configs/mips-softmmu.mak | 2 +- default-configs/mips64-softmmu.mak | 2 +- default-configs/mips64el-softmmu.mak | 2 +- default-configs/mipsel-softmmu.mak | 2 +- default-configs/ppc-softmmu.mak | 2 + default-configs/ppc64-softmmu.mak | 2 + default-configs/ppcemb-softmmu.mak | 2 + default-configs/sparc-softmmu.mak | 2 +- default-configs/sparc64-softmmu.mak | 2 + default-configs/x86_64-softmmu.mak | 2 + hw/esp.c | 23 +- hw/lsi53c895a.c | 47 +- hw/megasas.c | 1826 ++++++++++++++++++++++++++++++++++ hw/mfi.h | 1197 ++++++++++++++++++++++ hw/pci_ids.h | 2 + hw/scsi-bus.c | 120 ++- hw/scsi-defs.h | 20 +- hw/scsi-disk.c | 446 ++++----- hw/scsi-generic.c | 238 +++-- hw/scsi.h | 64 +- hw/usb-msd.c | 26 +- 24 files changed, 3603 insertions(+), 435 deletions(-) create mode 100644 hw/megasas.c create mode 100644 hw/mfi.h
