[Qemu-devel] Re: [PATCH] lsi53c895a: Add support for OS/2 Warp SYM8XX.ADD driver

[Kevin Wolf <kwolf@redhat.com>]

Am 30.09.2010 07:07, schrieb Nicholas A. Bellinger:
> From: Nicholas Bellinger <nab@linux-iscsi.org>
> 
> Greetings Paul, Jan, Kevin and co,
> 
> This series is against my v0.12.5 qemu-kvm.git that contains QEMU SCSI layer
> SGL passthrough from Gerd Hoffman, 8708EM2 MegaSas emulation from Dr. Hannes
> Reinecke, and well as my own hw/scsi-bsg.c support.  This tree is located here:
> 
> http://git.kernel.org/?p=virt/kvm/nab/qemu-kvm.git;a=summary
> 
> This first patch adds a missing qdev->reset() NOP caller in hw/scsi-generic.c that
> is now expected by lsi53c895a.c in >= v0.12.5 code.  You will want to apply this to
> all >= v0.12.5 QEMU trees so scsi-generic does not segfault with lsi53c895a expecting
> a valid qdev->reset().

This one should already be fixed with Bernhard Kohl's commit f8b6d672,
right? (Should have reached git master about two weeks ago)

> The second item is a bit more exotic.. 8-)  So I have been thinking about how to get
> qemu-kvm.git scsi-generic <-> TCM_Loop to function with OS/2 Warp v4 (SP15) in guest
> for a while now, and I am happy to report that after sending some time in the last weeks
> getting OS/2 setup (hey, it has been +13 years) and finding a functioning sym53c895a
> driver, and finally finding a working SYM8XX.ADD and being able to fill in missing
> informational registers and adding a workaround to fix a bogus Destination ID register
> WRITE from the now +10 year old SYM8XX.ADD driver code.
> 
> Here are some screenshots of the patch in action:
> 
> *) Booting with BASEDEV=SYM8XX.ADD /V:
> 
> http://linux-iscsi.org/index.php/Image:TCM_Loop-OS2Warp-QEMU-KVM-boot.png
> 
> *) TCM_loop <-> LIO-ORG SPC-3 LUN from KVM Host in the OS/2 Workplace shell!
> 
> http://linux-iscsi.org/index.php/Image:TCM_Loop-OS2Warp-QEMU-KVM-running.png

Nice. :-)

Kevin