Kernel panic when loading the IDE controller driver

Kernel panic when loading the IDE controller driver

[sgosavi1]

Hi All,

I have been working on porting Linux-4.15.13 kernel on our existing MPC8270
processor board. For this exercise, I have used pq2fads as a reference
board, its associated device tree and used cuImage for building the kernel.
I am facing an issue with the generic IDE flash controller driver in the new
kernel source where it fails to detect the Flash controller connected to 2GB
NAND flash available on the board. We have used non-standard IO port
addresses for this driver in the older kernel and I have added the required
code in the new kernel to setup the set of addresses that we need as IO
ports. Also, modified the code in the drivers/ide/ source to use the
non-standard IO port address. However, during boot up while inserting the
module I continue to get the below errors.

[    4.116587] ide: forcing hda as a disk (3543/255/63)
[    4.184190] Probing IDE interface ide0...
[    4.226330] Machine check in kernel mode.
[    4.233809] Caused by (from SRR1=49030):
[    4.233826] Transfer error ack signal
[    4.249263] IN from bad port e000000e at 004123ef

I understand that this is an addressing issue but not sure exactly what am I
missing to fix the problem. Can you provide me your inputs on debugging this
issue?

Thanks,
Sachin.




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Re: Kernel panic when loading the IDE controller driver

[Christophe Leroy]

Hi,

Le 13/02/2019 à 12:01, sgosavi1 a écrit :
> Hi All,
> 
> I have been working on porting Linux-4.15.13 kernel on our existing MPC8270
> processor board. For this exercise, I have used pq2fads as a reference
> board, its associated device tree and used cuImage for building the kernel.

What it the last linux version known to work properly ?

Christophe


> I am facing an issue with the generic IDE flash controller driver in the new
> kernel source where it fails to detect the Flash controller connected to 2GB
> NAND flash available on the board. We have used non-standard IO port
> addresses for this driver in the older kernel and I have added the required
> code in the new kernel to setup the set of addresses that we need as IO
> ports. Also, modified the code in the drivers/ide/ source to use the
> non-standard IO port address. However, during boot up while inserting the
> module I continue to get the below errors.
> 
> [    4.116587] ide: forcing hda as a disk (3543/255/63)
> [    4.184190] Probing IDE interface ide0...
> [    4.226330] Machine check in kernel mode.
> [    4.233809] Caused by (from SRR1=49030):
> [    4.233826] Transfer error ack signal
> [    4.249263] IN from bad port e000000e at 004123ef
> 
> I understand that this is an addressing issue but not sure exactly what am I
> missing to fix the problem. Can you provide me your inputs on debugging this
> issue?
> 
> Thanks,
> Sachin.
> 
> 
> 
> 
> --
> Sent from: http://linuxppc.10917.n7.nabble.com/linuxppc-dev-f3.html
> 

Re: Kernel panic when loading the IDE controller driver

[sgosavi1]

> What it the last linux version known to work properly?


We have used it successfully in the Linux-2.6.17.6 version. 


Thanks,
Sachin.



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Re: Kernel panic when loading the IDE controller driver

[Christophe Leroy]

Le 13/02/2019 à 13:24, sgosavi1 a écrit :
>> What it the last linux version known to work properly?
> 
> 
> We have used it successfully in the Linux-2.6.17.6 version.

Oh, ok, there's a big gap between the two versions.

Why using 4.15.13 which is obsolete instead of using one of the Long 
Term Support versions which are still maintained, like 4.14 or 4.19 ? 
(see the complete list at https://www.kernel.org/category/releases.html)

Christophe

> 
> 
> Thanks,
> Sachin.
> 
> 
> 
> --
> Sent from: http://linuxppc.10917.n7.nabble.com/linuxppc-dev-f3.html
> 

Re: Kernel panic when loading the IDE controller driver

[sgosavi1]

> Why using 4.15.13 which is obsolete instead of using one of the Long 
> Term Support versions which are still maintained, like 4.14 or 4.19 ? 
> (see the complete list at https://www.kernel.org/category/releases.html)

Well, when I started this task 4.15.13 was probably the latest stable
release and hence we decided to port this version. In the older kernel, we
have the m8260_setup.c source file for our board where the function
"io_block_mapping" was used to configure the non-standard IO port address
starting at 0xe0000000 location. This address was passed as the base address
followed by control address and IRQ number to the ide-core.ko module. In the
new kernel we do not have an option to send these addresses and IRQ numbers
as arguments to the driver. Instead the ide-generic.c source file in the new
kernel uses the standard IO port values and IRQ values. I modified the code
in the above file to used the addresses and IRQ number we used in the past.
Also, added code in the "MMU_init" function call available under
arch/PowerPC/init_32.c to setup the IO port address range by adding the
"io_block_mapping" call and the required IO port address range.

Is there anything else that needs to be added or how can we configure the
desired IO address range in the new kernel?

Thanks,
Sachin



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Re: Kernel panic when loading the IDE controller driver

[Christophe Leroy]

Le 13/02/2019 à 13:53, sgosavi1 a écrit :
>> Why using 4.15.13 which is obsolete instead of using one of the Long
>> Term Support versions which are still maintained, like 4.14 or 4.19 ?
>> (see the complete list at https://www.kernel.org/category/releases.html)
> 
> Well, when I started this task 4.15.13 was probably the latest stable
> release and hence we decided to port this version. In the older kernel, we
> have the m8260_setup.c source file for our board where the function
> "io_block_mapping" was used to configure the non-standard IO port address
> starting at 0xe0000000 location. This address was passed as the base address
> followed by control address and IRQ number to the ide-core.ko module. In the
> new kernel we do not have an option to send these addresses and IRQ numbers
> as arguments to the driver. Instead the ide-generic.c source file in the new
> kernel uses the standard IO port values and IRQ values. I modified the code
> in the above file to used the addresses and IRQ number we used in the past.
> Also, added code in the "MMU_init" function call available under
> arch/PowerPC/init_32.c to setup the IO port address range by adding the
> "io_block_mapping" call and the required IO port address range.
> 
> Is there anything else that needs to be added or how can we configure the
> desired IO address range in the new kernel?
> 

Maybe look around 
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=9a0e77f28b50128df0c9e26ae489e44e29a7270a

Also look at ide_platform.c. I imagine there must be some way to set it 
up in your device tree.

Maybe Bartlomiej Zolnierkiewicz can help ?

Christophe

Re: Kernel panic when loading the IDE controller driver

[sgosavi1]

> Maybe look around 
> https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?
> id=9a0e77f28b50128df0c9e26ae489e44e29a7270a

>Also look at ide_platform.c. I imagine there must be some way to set it 
>up in your device tree.

I have gone through this before and also tried the pata_platform driver but
no success yet. I haven't found any example that passes the IO ports and IRQ
information through the device tree to the driver code.

Thanks,
Sachin.



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Re: Kernel panic when loading the IDE controller driver

[Michal Suchánek]

On Thu, 14 Feb 2019 01:17:11 -0700 (MST)
sgosavi1 <Sachin.Gosavi@emerson.com> wrote:

> > Maybe look around 
> > https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?
> > id=9a0e77f28b50128df0c9e26ae489e44e29a7270a  
> 
> >Also look at ide_platform.c. I imagine there must be some way to set it 
> >up in your device tree.  
> 
> I have gone through this before and also tried the pata_platform driver but
> no success yet. I haven't found any example that passes the IO ports and IRQ
> information through the device tree to the driver code.

Hopefully there are examples of passing these values through ACPI.

Thanks

Michal

Re: Kernel panic when loading the IDE controller driver

[sgosavi1]

Hi,

> Hopefully there are examples of passing these values through ACPI.


Are you suggesting here to look at the ide-acpi.c sourc file available as
part of the driver code? In my original post I mentioned that I have
modified the ide-generic.c source file to use the IO port addresses and IRQ
number that we used in the older kernel. Also, added code in the kernel
under arch/PowerPC/mm/init_32.c source to configure the addresses required
by the driver as IO ports. But the error I am getting still continues to
suggest that probably the required address range is still setup by the
kernel as IO ports. 


How can we configure a set of virtual address as IO ports in the kernel
version 4.15.13?


Sachin 



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Re: Kernel panic when loading the IDE controller driver

[sgosavi1]

Hi All,


I finally got the FLASH controller driver working and it is now successfully
reporting the presence of 2GB Flash in the board. I used the new "libata"
driver code present in the new kernel source under drivers/ata/. Also did
the required additions in the device tree to provide the IO port, IRQ and
PIO mode details to the driver. 

However now I am getting the below errors.


[    4.200145] scsi host0: pata_of_platform
[    4.236999] ata1: PATA max PIO4 mmio cmd 0xe0000000 ctl 0xe200000c irq 63
[    4.439985] ata1.01: ATA-7: 2GB ATA Flash Disk, C A254G4, max UDMA/133
[    4.463419] ata1.01: 3571344 sectors, multi 0: LBA48
[    4.483384] ata1.01: configured for PIO
[    4.512936] scsi 0:0:1:0: Direct-Access     ATA      2GB ATA Flash Di
54G4 PQ: 0 ANSI: 5
[    4.555994] sd 0:0:1:0: [sda] 3571344 512-byte logical blocks: (1.83
GB/1.70 GiB)
[    4.591975] sd 0:0:1:0: [sda] Write Protect is off
[    4.611307] sd 0:0:1:0: [sda] Mode Sense: 00 3a 00 00
[    4.629733] sd 0:0:1:0: [sda] Write cache: disabled, read cache: enabled,
doesn't support DPO or FUA
[    4.823702]
[    4.823702] AT THE START OF CPU_STARTUP_ENTRY FUNCTION
[    4.823734]
[    4.823734] *****INSIDE IDLE LOOP********
[   36.163139] ata1: drained 65536 bytes to clear DRQ
[   36.185451] ata1.01: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6
frozen
[   36.199598] ata1.01: cmd 20/00:08:00:00:00/00:00:00:00:00/f0 tag 0 pio
4096 in
[   36.199598]          res 40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x4
(timeout)
[   36.229002] ata1: soft resetting link
[   36.559637] ata1.01: configured for PIO
[   36.567563] ata1.01: device reported invalid CHS sector 0
[   36.578396] ata1: EH complete
[   68.919134] ata1: drained 65536 bytes to clear DRQ
[   68.928530] ata1.01: limiting speed to UDMA7:PIO5
[   68.937856] ata1.01: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6
frozen
[   68.952487] ata1.01: cmd 20/00:08:00:00:00/00:00:00:00:00/f0 tag 0 pio
4096 in
[   68.952487]          res 40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x4
(timeout)
[   68.981876] ata1: soft resetting link
[   69.311683] ata1.01: configured for PIO
[   69.319304] ata1.01: device reported invalid CHS sector 0
[   69.330274] ata1: EH complete
[  101.687134] ata1: drained 65536 bytes to clear DRQ
[  101.696646] ata1.01: limiting speed to PIO0
[  101.704921] ata1.01: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6
frozen
[  101.719288] ata1.01: cmd 20/00:08:00:00:00/00:00:00:00:00/f0 tag 0 pio
4096 in
[  101.719288]          res 40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x4
(timeout)
[  101.748593] ata1: soft resetting link
[  102.079594] ata1.01: configured for PIO
[  102.087204] ata1.01: device reported invalid CHS sector 0
[  102.098144] ata1: EH complete
[  132.407134] ata1: drained 65536 bytes to clear DRQ
[  132.416687] ata1.01: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6
frozen
[  132.430752] ata1.01: cmd 20/00:08:00:00:00/00:00:00:00:00/f0 tag 0 pio
4096 in
[  132.430752]          res 40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x4
(timeout)
[  132.460168] ata1: soft resetting link
[  132.791594] ata1.01: configured for PIO
[  132.799048] ata1.01: device reported invalid CHS sector 0
[  132.810076] ata1: EH complete
[  165.175163] ata1: drained 65536 bytes to clear DRQ
[  165.186023] ata1.01: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6
frozen
[  165.200192] ata1.01: cmd 20/00:08:00:00:00/00:00:00:00:00/f0 tag 0 pio
4096 in
[  165.200192]          res 40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x4
(timeout)
[  165.229531] ata1: soft resetting link


Can anyone suggest why I am getting the above errors?

Thanks,
Sachin.



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Re: Kernel panic when loading the IDE controller driver

[Christophe Leroy]

Le 13/02/2019 à 16:27, Christophe Leroy a écrit :
> 
> 
> Le 13/02/2019 à 13:53, sgosavi1 a écrit :
>>> Why using 4.15.13 which is obsolete instead of using one of the Long
>>> Term Support versions which are still maintained, like 4.14 or 4.19 ?
>>> (see the complete list at https://www.kernel.org/category/releases.html)
>>
>> Well, when I started this task 4.15.13 was probably the latest stable
>> release and hence we decided to port this version. In the older 
>> kernel, we
>> have the m8260_setup.c source file for our board where the function
>> "io_block_mapping" was used to configure the non-standard IO port address
>> starting at 0xe0000000 location. This address was passed as the base 
>> address
>> followed by control address and IRQ number to the ide-core.ko module. 
>> In the
>> new kernel we do not have an option to send these addresses and IRQ 
>> numbers
>> as arguments to the driver. Instead the ide-generic.c source file in 
>> the new
>> kernel uses the standard IO port values and IRQ values. I modified the 
>> code
>> in the above file to used the addresses and IRQ number we used in the 
>> past.
>> Also, added code in the "MMU_init" function call available under
>> arch/PowerPC/init_32.c to setup the IO port address range by adding the
>> "io_block_mapping" call and the required IO port address range.
>>
>> Is there anything else that needs to be added or how can we configure the
>> desired IO address range in the new kernel?
>>
> 
> Maybe look around 
> https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=9a0e77f28b50128df0c9e26ae489e44e29a7270a 
> 
> 
> Also look at ide_platform.c. I imagine there must be some way to set it 
> up in your device tree.
> 
> Maybe Bartlomiej Zolnierkiewicz can help ?
> 
> Christophe

Le 14/02/2019 à 09:17, sgosavi1 a écrit :>> Maybe look around
 >
 > I have gone through this before and also tried the pata_platform 
driver but
 > no success yet. I haven't found any example that passes the IO ports 
and IRQ
 > information through the device tree to the driver code.
 >
 > Thanks,
 > Sachin.


Maybe someone from the IDE SUBSYSTEM would be able to help better ?

Entire thread at 
http://linuxppc.10917.n7.nabble.com/Kernel-panic-when-loading-the-IDE-controller-driver-td150020.html#none

Christophe

Re: Re: Kernel panic when loading the IDE controller driver

[Bartlomiej Zolnierkiewicz]

On 02/14/2019 06:54 PM, Christophe Leroy wrote:
> 
> 
> Le 13/02/2019 à 16:27, Christophe Leroy a écrit :
>>
>>
>> Le 13/02/2019 à 13:53, sgosavi1 a écrit :
>>>> Why using 4.15.13 which is obsolete instead of using one of the Long
>>>> Term Support versions which are still maintained, like 4.14 or 4.19 ?
>>>> (see the complete list at https://www.kernel.org/category/releases.html)
>>>
>>> Well, when I started this task 4.15.13 was probably the latest stable
>>> release and hence we decided to port this version. In the older kernel, we
>>> have the m8260_setup.c source file for our board where the function
>>> "io_block_mapping" was used to configure the non-standard IO port address
>>> starting at 0xe0000000 location. This address was passed as the base address
>>> followed by control address and IRQ number to the ide-core.ko module. In the
>>> new kernel we do not have an option to send these addresses and IRQ numbers
>>> as arguments to the driver. Instead the ide-generic.c source file in the new
>>> kernel uses the standard IO port values and IRQ values. I modified the code
>>> in the above file to used the addresses and IRQ number we used in the past.
>>> Also, added code in the "MMU_init" function call available under
>>> arch/PowerPC/init_32.c to setup the IO port address range by adding the
>>> "io_block_mapping" call and the required IO port address range.
>>>
>>> Is there anything else that needs to be added or how can we configure the
>>> desired IO address range in the new kernel?
>>>
>>
>> Maybe look around https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=9a0e77f28b50128df0c9e26ae489e44e29a7270a
>>
>> Also look at ide_platform.c. I imagine there must be some way to set it up in your device tree.

Please don't add new users to subsystem deprecated almost 10 years ago..

>> Maybe Bartlomiej Zolnierkiewicz can help ?
>>
>> Christophe
> 
> Le 14/02/2019 à 09:17, sgosavi1 a écrit :>> Maybe look around
>>
>> I have gone through this before and also tried the pata_platform driver but
>> no success yet. I haven't found any example that passes the IO ports and IRQ
>> information through the device tree to the driver code.

Please look at pata_of_platform.c driver from libata subsystem,
it should have all required functionality.

>> Thanks,
>> Sachin.
> 
> 
> Maybe someone from the IDE SUBSYSTEM would be able to help better ?
> 
> Entire thread at http://linuxppc.10917.n7.nabble.com/Kernel-panic-when-loading-the-IDE-controller-driver-td150020.html#none
> 
> Christophe

Best regards,
--
Bartlomiej Zolnierkiewicz
Samsung R&D Institute Poland
Samsung Electronics