Re: [Qemu-devel] [PATCH] Megasas HBA emulation and SCSI update v.2

[Hannes Reinecke <hare@suse.de>]

On 12/01/2010 03:18 PM, Hannes Reinecke wrote:
> Hey Nic,
> 
> On 11/24/2010 10:41 AM, Nicholas A. Bellinger wrote:
>> On Mon, 2010-11-22 at 11:34 +0100, Hannes Reinecke wrote:
> [ .. ]
>>
>> Hey Hannes,
>>
>> Just a heads up, I noticed that the latest v2 megasas w/ scsi-generic ->
>> TCM_loop appears to be broken on a Windows7 (Build 7600) guest, which
>> hangs during boot -> LUN scan with the following:
>>
>> truelife:/usr/src/qemu-kvm.git# ./x86_64-softmmu/qemu-system-x86_64 -m 512 -boot c ~/windows7.img \
>> 		-drive if=none,id=mydisk1,file=/dev/sg4 -device megasas,id=raid
>> 		-device scsi-generic,bus=raid.0,scsi-id=1,drive=mydisk1
>>
>> megasas: Using 80 sges, 1000 cmds, raid mode
>> megasas: Reset
>> megasas: Mapping MMIO region 0 at f2040000
>> megasas: Mapping IO region 2 at 0000c200
>> megasas: Mapping QUEUE region 3 at f2080000
>> megasas: Mapping MMIO region 0 at f2040000
>> megasas: Mapping IO region 2 at 0000c200
>> megasas: Mapping QUEUE region 3 at f2080000
>> megasas: Mapping MMIO region 0 at f2040000
>> megasas: Mapping IO region 2 at 0000c200
>> megasas: Mapping QUEUE region 3 at f2080000
>> megasas: readl mmio 0xb0
>> megasas: writel mmio 20: 7
>> megasas: Reset
>> megasas: readl mmio 0x20
>> megasas: writel mmio 40: 1ff9c041
>> megasas: Received frame addr 1ff9c000 count 32
>> megasas: MFI cmd 0 context 0 count 32
>> megasas: Return new frame 0 cmd 0x7f7711654330
>> megasas: Enqueue frame 0 count 32 context 0 tail 0 busy 1
>> megasas: MFI init firmware: xfer len 0 pa 0
>> megasas: MFI init firmware: queue at f000ff53f000e2c3 len -268370093 head f000ff53f000ff53 tail f000ff53f000ff53
>> megasas: Complete frame context 0
>>
> Okay, it looks as if I've fixed it up.
> Win7 32bit works now with my megasas.v3 tree.
> Curiously, Win7 64bit fails; it crashes at relative address
> 28F4, wherever that's supposed to be.
> And, of course, Windows Vista with newest driver from LSI fails, too
> :-(.
> Guess I need to do some more debugging here.
> 
Hmpf. Using a new vista x86 image (build 6002) with SP2 preloaded
megasas works, too.
Dodgy build I had, apparently.

Cheers,

Hannes
-- 
Dr. Hannes Reinecke		      zSeries & Storage
hare@suse.de			      +49 911 74053 688
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