SATA/ATAPI

SATA/ATAPI

[Tais M. Hansen]

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Hi,

I know there has been some talking about SATA/ATAPI being experimental and 
might not work at all under kernel-2.6.x.

One of my linux boxes has a Plextor DVD-RW drive with a SATA interface. The 
kernel sees this drive (ata3) but apparently doesn't tie it to a sdx device. 
The box also have a SATA harddisk, which is working just fine. The relevant 
dmesg output is pasted below.

Is there anything I can do to help the development of SATA/ATAPI devices?



libata version 1.10 loaded.
sata_promise version 1.01
ACPI: PCI interrupt 0000:00:08.0[A] -> GSI 18 (level, low) -> IRQ 18
ata1: SATA max UDMA/133 cmd 0xF8804200 ctl 0xF8804238 bmdma 0x0 irq 18
ata2: SATA max UDMA/133 cmd 0xF8804280 ctl 0xF88042B8 bmdma 0x0 irq 18
ata1: dev 0 cfg 49:2f00 82:7c6b 83:7b09 84:4003 85:7c69 86:3a01 87:4003 
88:407f
ata1: dev 0 ATA, max UDMA/133, 240121728 sectors:
ata1: dev 0 configured for UDMA/133
scsi0 : sata_promise
ata2: no device found (phy stat 00000000)
scsi1 : sata_promise
  Vendor: ATA       Model: Maxtor 6Y120M0    Rev: YAR5
  Type:   Direct-Access                      ANSI SCSI revision: 05
sata_via version 1.1
ACPI: PCI interrupt 0000:00:0f.0[B] -> GSI 20 (level, low) -> IRQ 20
sata_via(0000:00:0f.0): routed to hard irq line 4
ata3: SATA max UDMA/133 cmd 0xE800 ctl 0xE402 bmdma 0xD400 irq 20
ata4: SATA max UDMA/133 cmd 0xE000 ctl 0xD802 bmdma 0xD408 irq 20
ata3: dev 0 cfg 49:0f00 82:0000 83:0000 84:0000 85:0000 86:0000 87:0000 
88:0007
ata3: dev 0 ATAPI, max UDMA/33
ata3: dev 0 configured for UDMA/33
scsi2 : sata_via
ata4: no device found (phy stat 00000000)
scsi3 : sata_via
SCSI device sda: 240121728 512-byte hdwr sectors (122942 MB)
SCSI device sda: drive cache: write back
SCSI device sda: 240121728 512-byte hdwr sectors (122942 MB)
SCSI device sda: drive cache: write back
 sda: sda1 sda2 sda3 < sda5 sda6 sda7 >
Attached scsi disk sda at scsi0, channel 0, id 0, lun 0

-- 
Regards,
Tais M. Hansen
OSD

___________________________________________________________
"If people had understood how patents would be granted when most of today's 
ideas were invented and had taken out patents, the industry would be at a 
complete standstill today." -Bill Gates (1991)

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Re: SATA/ATAPI

[Brian Jackson]

Just to check, you do have scsi cdrom support enabled right?

On 4/21/05, Tais M. Hansen <tais.hansen@osd.dk> wrote:
> Hi,
> 
> I know there has been some talking about SATA/ATAPI being experimental and
> might not work at all under kernel-2.6.x.
> 
> One of my linux boxes has a Plextor DVD-RW drive with a SATA interface. The
> kernel sees this drive (ata3) but apparently doesn't tie it to a sdx device.
> The box also have a SATA harddisk, which is working just fine. The relevant
> dmesg output is pasted below.
> 
> Is there anything I can do to help the development of SATA/ATAPI devices?
> 
> libata version 1.10 loaded.
> sata_promise version 1.01
> ACPI: PCI interrupt 0000:00:08.0[A] -> GSI 18 (level, low) -> IRQ 18
> ata1: SATA max UDMA/133 cmd 0xF8804200 ctl 0xF8804238 bmdma 0x0 irq 18
> ata2: SATA max UDMA/133 cmd 0xF8804280 ctl 0xF88042B8 bmdma 0x0 irq 18
> ata1: dev 0 cfg 49:2f00 82:7c6b 83:7b09 84:4003 85:7c69 86:3a01 87:4003
> 88:407f
> ata1: dev 0 ATA, max UDMA/133, 240121728 sectors:
> ata1: dev 0 configured for UDMA/133
> scsi0 : sata_promise
> ata2: no device found (phy stat 00000000)
> scsi1 : sata_promise
>   Vendor: ATA       Model: Maxtor 6Y120M0    Rev: YAR5
>   Type:   Direct-Access                      ANSI SCSI revision: 05
> sata_via version 1.1
> ACPI: PCI interrupt 0000:00:0f.0[B] -> GSI 20 (level, low) -> IRQ 20
> sata_via(0000:00:0f.0): routed to hard irq line 4
> ata3: SATA max UDMA/133 cmd 0xE800 ctl 0xE402 bmdma 0xD400 irq 20
> ata4: SATA max UDMA/133 cmd 0xE000 ctl 0xD802 bmdma 0xD408 irq 20
> ata3: dev 0 cfg 49:0f00 82:0000 83:0000 84:0000 85:0000 86:0000 87:0000
> 88:0007
> ata3: dev 0 ATAPI, max UDMA/33
> ata3: dev 0 configured for UDMA/33
> scsi2 : sata_via
> ata4: no device found (phy stat 00000000)
> scsi3 : sata_via
> SCSI device sda: 240121728 512-byte hdwr sectors (122942 MB)
> SCSI device sda: drive cache: write back
> SCSI device sda: 240121728 512-byte hdwr sectors (122942 MB)
> SCSI device sda: drive cache: write back
>  sda: sda1 sda2 sda3 < sda5 sda6 sda7 >
> Attached scsi disk sda at scsi0, channel 0, id 0, lun 0
> 
> --
> Regards,
> Tais M. Hansen
> OSD
> 
> ___________________________________________________________
> "If people had understood how patents would be granted when most of today's
> ideas were invented and had taken out patents, the industry would be at a
> complete standstill today." -Bill Gates (1991)
> 
> 
>

Re: SATA/ATAPI

[Tais M. Hansen]

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On Friday 22 April 2005 01:51, Brian Jackson wrote:
> > One of my linux boxes has a Plextor DVD-RW drive with a SATA interface.
> > The kernel sees this drive (ata3) but apparently doesn't tie it to a sdx
> > device. The box also have a SATA harddisk, which is working just fine.
> > The relevant dmesg output is pasted below.
> Just to check, you do have scsi cdrom support enabled right?

Yes. cdrom and sr_mod are both loaded as modules. I'm assuming having compiled 
them as modules doesn't change anything. I'm probably going to try messing 
with the SCSI cdrom driver, just to see if I can figure out what's going on.

-- 
Regards,
Tais M. Hansen
OSD

___________________________________________________________
"If people had understood how patents would be granted when most of today's 
ideas were invented and had taken out patents, the industry would be at a 
complete standstill today." -Bill Gates (1991)

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Re: SATA/ATAPI

[Wakko Warner]

Tais M. Hansen wrote:
> I know there has been some talking about SATA/ATAPI being experimental and 
> might not work at all under kernel-2.6.x.
> 
> One of my linux boxes has a Plextor DVD-RW drive with a SATA interface. The 
> kernel sees this drive (ata3) but apparently doesn't tie it to a sdx device. 
> The box also have a SATA harddisk, which is working just fine. The relevant 
> dmesg output is pasted below.
> 
> Is there anything I can do to help the development of SATA/ATAPI devices?

I thought all SCSI cdroms were using /dev/scdx or /dev/srx.  Atleast all
mine are (I use ide-scsi for ide disks)

-- 
 Lab tests show that use of micro$oft causes cancer in lab animals

Re: SATA/ATAPI

[Tais M. Hansen]

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On Friday 22 April 2005 13:14, Wakko Warner wrote:
> > One of my linux boxes has a Plextor DVD-RW drive with a SATA interface.
> > The kernel sees this drive (ata3) but apparently doesn't tie it to a sdx
> > device. The box also have a SATA harddisk, which is working just fine.
> > The relevant dmesg output is pasted below.
> I thought all SCSI cdroms were using /dev/scdx or /dev/srx.  Atleast all
> mine are (I use ide-scsi for ide disks)

You thought right. The "/dev/sdx" was just a typo on my side.

-- 
Regards,
Tais M. Hansen
OSD

___________________________________________________________
"If people had understood how patents would be granted when most of today's 
ideas were invented and had taken out patents, the industry would be at a 
complete standstill today." -Bill Gates (1991)

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Re: SATA/ATAPI

[Tais M. Hansen]

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On Thursday 21 April 2005 19:41, Tais M. Hansen wrote:
> One of my linux boxes has a Plextor DVD-RW drive with a SATA interface. The
> kernel sees this drive (ata3) but apparently doesn't tie it to a sdx
> device. The box also have a SATA harddisk, which is working just fine. The
> relevant dmesg output is pasted below.

I've been digging through sr, scsi, sata_via, libata-scsi and libata-core, 
littering the code with printk's.

My lack of knowledge on how the kernel handles devices, is really showing now. 

I've been unable to figure out what is supposed to tie sr to the devices 
probed by sata_via. Also, littering sr with printk's gave me the idea that sr 
is not even looking for cdrom devices. It loads, does the basic module __init 
stuff and then silence. Should sr find devices itself or is the kernel 
supposed to inform sr via some callback hook? I could really be barking up 
the wrong tree here, and not even see it.

Enabling SCSI logging and kernel debug didn't really give me anything useful.

-- 
Regards,
Tais M. Hansen
OSD

___________________________________________________________
"If people had understood how patents would be granted when most of today's 
ideas were invented and had taken out patents, the industry would be at a 
complete standstill today." -Bill Gates (1991)

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Re: SATA/ATAPI

[Jeff Garzik]

Tais M. Hansen wrote:
> On Thursday 21 April 2005 19:41, Tais M. Hansen wrote:
> 
>>One of my linux boxes has a Plextor DVD-RW drive with a SATA interface. The
>>kernel sees this drive (ata3) but apparently doesn't tie it to a sdx
>>device. The box also have a SATA harddisk, which is working just fine. The
>>relevant dmesg output is pasted below.
> 
> 
> I've been digging through sr, scsi, sata_via, libata-scsi and libata-core, 
> littering the code with printk's.
> 
> My lack of knowledge on how the kernel handles devices, is really showing now. 
> 
> I've been unable to figure out what is supposed to tie sr to the devices 
> probed by sata_via. Also, littering sr with printk's gave me the idea that sr 
> is not even looking for cdrom devices. It loads, does the basic module __init 
> stuff and then silence. Should sr find devices itself or is the kernel 
> supposed to inform sr via some callback hook? I could really be barking up 
> the wrong tree here, and not even see it.
> 
> Enabling SCSI logging and kernel debug didn't really give me anything useful.


Did you turn on ATA_ENABLE_ATAPI in include/linux/libata.h?

	Jeff

Re: SATA/ATAPI

[Tais M. Hansen]

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On Sunday 24 April 2005 18:55, Jeff Garzik wrote:
> > I've been digging through sr, scsi, sata_via, libata-scsi and
> > libata-core, littering the code with printk's.
> > My lack of knowledge on how the kernel handles devices, is really showing
> > now.
> > I've been unable to figure out what is supposed to tie sr to the devices
> > probed by sata_via. Also, littering sr with printk's gave me the idea
> > that sr is not even looking for cdrom devices. It loads, does the basic
> > module __init stuff and then silence. Should sr find devices itself or is
> > the kernel supposed to inform sr via some callback hook? I could really
> > be barking up the wrong tree here, and not even see it.
> > Enabling SCSI logging and kernel debug didn't really give me anything
> > useful.
> Did you turn on ATA_ENABLE_ATAPI in include/linux/libata.h?

Tried with it both defined and undefined. When it's defined an extra line is 
added (the last one below) when loading the sata_via module:

sata_via version 1.1
ACPI: PCI interrupt 0000:00:0f.0[B] -> GSI 20 (level, low) -> IRQ 20
sata_via(0000:00:0f.0): routed to hard irq line 4
ata3: SATA max UDMA/133 cmd 0xE800 ctl 0xE402 bmdma 0xD400 irq 20
ata4: SATA max UDMA/133 cmd 0xE000 ctl 0xD802 bmdma 0xD408 irq 20
ata3: dev 0 cfg 49:0f00 82:0000 83:0000 84:0000 85:0000 86:0000 87:0000 
88:0007
ata3: dev 0 ATAPI, max UDMA/33
ata3: dev 0 configured for UDMA/33
scsi2 : sata_via
ata4: no device found (phy stat 00000000)
scsi3 : sata_via
ata3: command 0xa0 timeout, stat 0xd0 host_stat 0x1

-- 
Regards,
Tais M. Hansen
OSD

___________________________________________________________
"If people had understood how patents would be granted when most of today's 
ideas were invented and had taken out patents, the industry would be at a 
complete standstill today." -Bill Gates (1991)

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Re: SATA/ATAPI

[Tais M. Hansen]

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On Sunday 24 April 2005 18:55, Jeff Garzik wrote:
> > I've been unable to figure out what is supposed to tie sr to the devices
> > probed by sata_via. Also, littering sr with printk's gave me the idea
> > that sr is not even looking for cdrom devices. It loads, does the basic
> > module __init stuff and then silence. Should sr find devices itself or is
> > the kernel supposed to inform sr via some callback hook? I could really
> > be barking up the wrong tree here, and not even see it.
> Did you turn on ATA_ENABLE_ATAPI in include/linux/libata.h?

Seems like there's another guy reporting pretty much the same problem. Also 
sata_via and the Plextor 712SA SATA DVD drive. Different motherboard though.

http://lkml.org/lkml/2005/3/25/259

-- 
Regards,
Tais M. Hansen
OSD

___________________________________________________________
"If people had understood how patents would be granted when most of today's 
ideas were invented and had taken out patents, the industry would be at a 
complete standstill today." -Bill Gates (1991)

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Re: SATA/ATAPI

[Tais M. Hansen]

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On Tuesday 26 April 2005 23:17, Andy Stewart wrote:
> I have a patch that partially solves this situation.  My patch allows
> the SATA ATAPI device to be seen, mounted, umounted, and read without
> problem.  Writes to the device fail miserably, and I haven't debugged
> that yet.  Also, the use of the 'dd' command with my patch works unless
> 'dd' is allowed to read off the end of the CD, in which case there is a
> kernel oops (easily reproduced, and I've not yet debugged that failure,
> but I have a theory).
> Since my patch isn't a complete solution, I haven't told anybody about
> it until now.  However, if you are interested in my patch despite its
> limitations, please let me know, and I'll be happy to share it with you.
>   My work was done with the 2.6.11.5 kernel and is limited to one or two
> files, if I recall correctly.

I'd very much like to see what you came up with. I'm currently playing with 
2.6.11.7 but I doubt there's much difference in this area from .5.

-- 
Regards,
Tais M. Hansen
OSD

___________________________________________________________
"If people had understood how patents would be granted when most of today's 
ideas were invented and had taken out patents, the industry would be at a 
complete standstill today." -Bill Gates (1991)

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