Re: Help On Adaptec SAS Controller AD-483000

Re: Help On Adaptec SAS Controller AD-483000

[Rakesh]

IMHO, there are no SAS controller that support PMP's
today. However having said that there are a bunch of
SI & Marvell controllers which work with PMP's

Thanks,
Rakesh

Can anyone please suggest me any SAS raid controller
which supports
hooking up SATA Port multiplier? As I mentioned
earlier, with Adaptec
SAS Controller AD-483000, when I try to send FIS reset
to the SATA Port
Multiplier, I get errors from the Adaptec f/w /
driver. The command I
send out is:

1. Send Nop with SRST bit set to port 15
0x27 0xf 0x0 0x0 0x0 0x0 0x0 0xa0 0x0 0x0 0x0 0x0 0x0
0x0 0x0 0x4

2. Send Nop with SRST bit clear to port 15
0x27 0xf 0x0 0x0 0x0 0x0 0x0 0xa0 0x0 0x0 0x0 0x0 0x0
0x0 0x0 0x0

At this point, I am expecting the Port Multiplier to
respond with
signature fis.

But I get errors after first command and subsequent
commands don't go
out on the bus.
//sanjay
> -----Original Message-----
> From: linux-scsi-owner@xxxxxxxxxxxxxxx
[mailto:linux-scsi-owner@xxxxxxxxxxxxxxx]
> On Behalf Of Sanjay Gandotra
> Sent: Wednesday, April 02, 2008 5:02 PM
> To: linux-scsi@xxxxxxxxxxxxxxx
> Subject: RE: Help On Adaptec SAS Controller
AD-483000
> 
> 
> Absolutely! I was trying to implement "
sas_discover_stat_pm()" This
is
> where, I wanted to do the SATA Port Multiplier Init
Seuence by sending
> out the soft reset FIS.
> 
> > -----Original Message-----
> > From: James Bottomley
[mailto:James.Bottomley@xxxxxxxxxxxxxxxxxxxxx]
> > Sent: Wednesday, April 02, 2008 4:45 PM
> > To: Sanjay Gandotra
> > Cc: linux-scsi@xxxxxxxxxxxxxxx
> > Subject: Re: Help On Adaptec SAS Controller
AD-483000
> >
> > On Wed, 2008-04-02 at 16:32 -0700, Sanjay Gandotra
wrote:
> > > Hi,
> > >
> > > Ok, the issue I have is the following:
> > >
> > > I have connected a SATA Port Multiplier to
AD-483000. And I have
two
> sata
> > drives connected to the Sata port multiplier (one
at port 0 and
second
> at port 1)
> > > My Linux Kernel is 2.6.24.3. I am using the
drivers in the
kernel..
> aic94xx and
> > libsas
> > >
> > > The drive at port 0 of the sata port multiplier
is detected
nicely.
> The problem is
> > that the second drive on the port multiplier is
not detected.
> > > After investigations.. I figured out that no one
is trying to do
> sata port multiplier
> > initialisation and detection. After reading the
sata spec etc., I
> tried to modify libsas
> > so that before detecting any sata device, it would
send out FIS
(soft
> reset ) to sata
> > port 15 with SRST bit set to 1 followed by another
FIS to sata port
15
> with SRST bit
> > set to 0.
> > >
> > > The first FIS goes out. I can see it on a SATA
analyzer. The
second
> FIS never
> > goes out...
> > > Adaptec's driver.. is giving errors for the
first FIS.
> >
> > I'm afraid the basic source of the problem is that
port multiplier
> > support in libsas is stubbed out.  No-one
developing the driver
> actually
> > has a port multiplier (and we assumed that
everyone would use
> expanders
> > anyway).
> >
> > The place to begin is in
libsas/sas_ata.c:sas_discover_stat_pm()
which
> > basically returns -ENODEV at the moment.
> >
> > James
> --
> To unsubscribe from this list: send the line
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Help On Adaptec SAS Controller AD-483000

[Sanjay Gandotra]

Hi,
 
Ok, the issue I have is the following:
 
I have connected a SATA Port Multiplier to AD-483000. And I have two sata drives connected to the Sata port multiplier (one at port 0 and second at port 1)
My Linux Kernel is 2.6.24.3. I am using the drivers in the kernel.. aic94xx and libsas
 
The drive at port 0 of the sata port multiplier is detected nicely. The problem is that the second drive on the port multiplier is not detected. 
After investigations.. I figured out that no one is trying to do sata port multiplier initialisation and detection. After reading the sata spec etc., I tried to modify libsas so that before detecting any sata device, it would send out FIS (soft reset ) to sata port 15 with SRST bit set to 1 followed by another FIS to sata port 15 with SRST bit set to 0.
 
The first FIS goes out. I can see it on a SATA analyzer. The second  FIS never goes out... 
Adaptec's driver.. is giving errors for the first FIS.
"
Apr 2 12:32:48 linux-storage kernel: sas: task aborted, flags:0x15
Apr 2 12:32:48 linux-storage kernel: aic94xx: tmf tasklet complete
Apr 2 12:32:48 linux-storage kernel: aic94xx: tmf came back
Apr 2 12:32:48 linux-storage kernel: aic94xx: task 0xf5d83a80 aborted, res: 0x4
Apr 2 12:32:48 linux-storage kernel: sas: came back from abort task
Apr 2 12:32:58 linux-storage kernel: sas: task aborted, flags:0x15
Apr 2 12:32:58 linux-storage kernel: aic94xx: task 0xf5d83a80 done with opcode 0x1e resp 0x0 stat 0x8d but aborted by upper layer!
Apr 2 12:32:58 linux-storage kernel: aic94xx: tmf tasklet complete
Apr 2 12:32:58 linux-storage kernel: aic94xx: tmf came back
Apr 2 12:32:58 linux-storage kernel: aic94xx: asd_abort_task: task 0xf5d83a80 done
Apr 2 12:32:58 linux-storage kernel: aic94xx: task 0xf5d83a80 aborted, res: 0x0
Apr 2 12:32:58 linux-storage kernel: sas: came back from abort task
Apr 2 12:32:58 linux-storage kernel: sas: task finished with resp:0x0, stat:0x8d
Apr 2 12:33:08 linux-storage kernel: sas: task aborted, flags:0x15
Apr 2 12:33:08 linux-storage kernel: aic94xx: task 0xf5d83a80 done with opcode 0x1e resp 0x0 stat 0x8d but aborted by upper layer!
Apr 2 12:33:08 linux-storage kernel: aic94xx: tmf tasklet complete
Apr 2 12:33:08 linux-storage kernel: aic94xx: tmf came back
Apr 2 12:33:08 linux-storage kernel: aic94xx: asd_abort_task: task 0xf5d83a80 done
Apr 2 12:33:08 linux-storage kernel: aic94xx: task 0xf5d83a80 aborted, res: 0x0
Apr 2 12:33:08 linux-storage kernel: sas: came back from abort task
Apr 2 12:33:08 linux-storage kernel: sas: task finished with resp:0x0, stat:0x8d
Apr 2 12:33:08 linux-storage kernel: sas: DONE DISCOVERY on port 0, pid:10707, result:-250"
 
 
I will appreciate if anyone could help me in any way by giving some suggestion(s)/direction(s)
 
Best Regards,
Sanjay
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Re: Help On Adaptec SAS Controller AD-483000

[James Bottomley]

On Wed, 2008-04-02 at 16:32 -0700, Sanjay Gandotra wrote:
> Hi,
>  
> Ok, the issue I have is the following:
>  
> I have connected a SATA Port Multiplier to AD-483000. And I have two sata drives connected to the Sata port multiplier (one at port 0 and second at port 1)
> My Linux Kernel is 2.6.24.3. I am using the drivers in the kernel.. aic94xx and libsas
>  
> The drive at port 0 of the sata port multiplier is detected nicely. The problem is that the second drive on the port multiplier is not detected. 
> After investigations.. I figured out that no one is trying to do sata port multiplier initialisation and detection. After reading the sata spec etc., I tried to modify libsas so that before detecting any sata device, it would send out FIS (soft reset ) to sata port 15 with SRST bit set to 1 followed by another FIS to sata port 15 with SRST bit set to 0.
>  
> The first FIS goes out. I can see it on a SATA analyzer. The second  FIS never goes out... 
> Adaptec's driver.. is giving errors for the first FIS.

I'm afraid the basic source of the problem is that port multiplier
support in libsas is stubbed out.  No-one developing the driver actually
has a port multiplier (and we assumed that everyone would use expanders
anyway).

The place to begin is in libsas/sas_ata.c:sas_discover_stat_pm() which
basically returns -ENODEV at the moment.

James

RE: Help On Adaptec SAS Controller AD-483000

[Sanjay Gandotra]

Absolutely! I was trying to implement " sas_discover_stat_pm()" This is
where, I wanted to do the SATA Port Multiplier Init Seuence by sending
out the soft reset FIS.

> -----Original Message-----
> From: James Bottomley [mailto:James.Bottomley@HansenPartnership.com]
> Sent: Wednesday, April 02, 2008 4:45 PM
> To: Sanjay Gandotra
> Cc: linux-scsi@vger.kernel.org
> Subject: Re: Help On Adaptec SAS Controller AD-483000
> 
> On Wed, 2008-04-02 at 16:32 -0700, Sanjay Gandotra wrote:
> > Hi,
> >
> > Ok, the issue I have is the following:
> >
> > I have connected a SATA Port Multiplier to AD-483000. And I have two
sata
> drives connected to the Sata port multiplier (one at port 0 and second
at port 1)
> > My Linux Kernel is 2.6.24.3. I am using the drivers in the kernel..
aic94xx and
> libsas
> >
> > The drive at port 0 of the sata port multiplier is detected nicely.
The problem is
> that the second drive on the port multiplier is not detected.
> > After investigations.. I figured out that no one is trying to do
sata port multiplier
> initialisation and detection. After reading the sata spec etc., I
tried to modify libsas
> so that before detecting any sata device, it would send out FIS (soft
reset ) to sata
> port 15 with SRST bit set to 1 followed by another FIS to sata port 15
with SRST bit
> set to 0.
> >
> > The first FIS goes out. I can see it on a SATA analyzer. The second
FIS never
> goes out...
> > Adaptec's driver.. is giving errors for the first FIS.
> 
> I'm afraid the basic source of the problem is that port multiplier
> support in libsas is stubbed out.  No-one developing the driver
actually
> has a port multiplier (and we assumed that everyone would use
expanders
> anyway).
> 
> The place to begin is in libsas/sas_ata.c:sas_discover_stat_pm() which
> basically returns -ENODEV at the moment.
> 
> James

RE: Help On Adaptec SAS Controller AD-483000

[Sanjay Gandotra]

Can anyone please suggest me any SAS raid controller which supports
hooking up SATA Port multiplier? As I mentioned earlier, with Adaptec
SAS Controller AD-483000, when I try to send FIS reset to the SATA Port
Multiplier, I get errors from the Adaptec f/w / driver. The command I
send out is:

1. Send Nop with SRST bit set to port 15
0x27 0xf 0x0 0x0 0x0 0x0 0x0 0xa0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x4

2. Send Nop with SRST bit clear to port 15
0x27 0xf 0x0 0x0 0x0 0x0 0x0 0xa0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0

At this point, I am expecting the Port Multiplier to respond with
signature fis.

But I get errors after first command and subsequent commands don't go
out on the bus.

RE: Help On Adaptec SAS Controller AD-483000

[Sanjay Gandotra]

Can anyone please suggest me any SAS raid controller which supports
hooking up SATA Port multiplier? As I mentioned earlier, with Adaptec
SAS Controller AD-483000, when I try to send FIS reset to the SATA Port
Multiplier, I get errors from the Adaptec f/w / driver. The command I
send out is:

1. Send Nop with SRST bit set to port 15
0x27 0xf 0x0 0x0 0x0 0x0 0x0 0xa0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x4

2. Send Nop with SRST bit clear to port 15
0x27 0xf 0x0 0x0 0x0 0x0 0x0 0xa0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0

At this point, I am expecting the Port Multiplier to respond with
signature fis.

But I get errors after first command and subsequent commands don't go
out on the bus.
//sanjay
> -----Original Message-----
> From: linux-scsi-owner@vger.kernel.org
[mailto:linux-scsi-owner@vger.kernel.org]
> On Behalf Of Sanjay Gandotra
> Sent: Wednesday, April 02, 2008 5:02 PM
> To: linux-scsi@vger.kernel.org
> Subject: RE: Help On Adaptec SAS Controller AD-483000
> 
> 
> Absolutely! I was trying to implement " sas_discover_stat_pm()" This
is
> where, I wanted to do the SATA Port Multiplier Init Seuence by sending
> out the soft reset FIS.
> 
> > -----Original Message-----
> > From: James Bottomley [mailto:James.Bottomley@HansenPartnership.com]
> > Sent: Wednesday, April 02, 2008 4:45 PM
> > To: Sanjay Gandotra
> > Cc: linux-scsi@vger.kernel.org
> > Subject: Re: Help On Adaptec SAS Controller AD-483000
> >
> > On Wed, 2008-04-02 at 16:32 -0700, Sanjay Gandotra wrote:
> > > Hi,
> > >
> > > Ok, the issue I have is the following:
> > >
> > > I have connected a SATA Port Multiplier to AD-483000. And I have
two
> sata
> > drives connected to the Sata port multiplier (one at port 0 and
second
> at port 1)
> > > My Linux Kernel is 2.6.24.3. I am using the drivers in the
kernel..
> aic94xx and
> > libsas
> > >
> > > The drive at port 0 of the sata port multiplier is detected
nicely.
> The problem is
> > that the second drive on the port multiplier is not detected.
> > > After investigations.. I figured out that no one is trying to do
> sata port multiplier
> > initialisation and detection. After reading the sata spec etc., I
> tried to modify libsas
> > so that before detecting any sata device, it would send out FIS
(soft
> reset ) to sata
> > port 15 with SRST bit set to 1 followed by another FIS to sata port
15
> with SRST bit
> > set to 0.
> > >
> > > The first FIS goes out. I can see it on a SATA analyzer. The
second
> FIS never
> > goes out...
> > > Adaptec's driver.. is giving errors for the first FIS.
> >
> > I'm afraid the basic source of the problem is that port multiplier
> > support in libsas is stubbed out.  No-one developing the driver
> actually
> > has a port multiplier (and we assumed that everyone would use
> expanders
> > anyway).
> >
> > The place to begin is in libsas/sas_ata.c:sas_discover_stat_pm()
which
> > basically returns -ENODEV at the moment.
> >
> > James
> --
> To unsubscribe from this list: send the line "unsubscribe linux-scsi"
in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html