OSB4 issues on 2.4.19-ac4

OSB4 issues on 2.4.19-ac4

[Samuel Flory]

  It appears that the OSB4 ide controller isn't working on ac4.  I have
a Tyan 2515, and 2518 which hang when dma is enabled.

The 2518 hangs on a "hdparm -t /dev/hda" after enabling dma:  
Uniform Multi-Platform E-IDE driver Revision: 6.31
ide: Assuming 33MHz system bus speed for PIO modes; override with
idebus=xx
SvrWks OSB4: IDE controller on PCI bus 00 dev 79
SvrWks OSB4: chipset revision 0
SvrWks OSB4: not 100% native mode: will probe irqs later
    ide0: BM-DMA at 0xffa0-0xffa7, BIOS settings: hda:DMA, hdb:pio
    ide1: BM-DMA at 0xffa8-0xffaf, BIOS settings: hdc:DMA, hdd:pio
hda: Maxtor 5T040H4, ATA DISK drive
hdc: Maxtor 5T040H4, ATA DISK drive
ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
ide1 at 0x170-0x177,0x376 on irq 15
hda: host protected area => 1
hda: 80043264 sectors (40982 MB) w/2048KiB Cache, CHS=4982/255/63
hdc: host protected area => 1
hdc: setmax LBA 80043264, native  78125000
hdc: 78125000 sectors (40000 MB) w/2048KiB Cache, CHS=77504/16/63
ide-floppy driver 0.99.newide
Partition check:
 hda: unknown partition table
 hdc: unknown partition table


2515 hangs on a "hdparm -t /dev/hda" after enabling dma:
Uniform Multi-Platform E-IDE driver Revision: 6.31
ide: Assuming 33MHz system bus speed for PIO modes; override with
idebus=xx
PDC20267: IDE controller on PCI bus 00 dev 18
PDC20267: chipset revision 2
PDC20267: not 100% native mode: will probe irqs later
PDC20267: ROM enabled at 0xfeae0000
PDC20267: (U)DMA Burst Bit ENABLED Primary MASTER Mode Secondary MASTER
Mode.
    ide2: BM-DMA at 0xdf00-0xdf07, BIOS settings: hde:pio, hdf:pio
    ide3: BM-DMA at 0xdf08-0xdf0f, BIOS settings: hdg:pio, hdh:pio
SvrWks OSB4: IDE controller on PCI bus 00 dev 79
SvrWks OSB4: chipset revision 0
SvrWks OSB4: not 100% native mode: will probe irqs later
    ide0: BM-DMA at 0xffa0-0xffa7, BIOS settings: hda:DMA, hdb:pio
    ide1: BM-DMA at 0xffa8-0xffaf, BIOS settings: hdc:DMA, hdd:pio
hda: ST320410A, ATA DISK drive
hdc: ST320410A, ATA DISK drive
ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
ide1 at 0x170-0x177,0x376 on irq 15
hda: host protected area => 1
hda: 39102336 sectors (20020 MB) w/2048KiB Cache, CHS=2434/255/63
hdc: host protected area => 1
hdc: 39102336 sectors (20020 MB) w/2048KiB Cache, CHS=38792/16/63
ide-floppy driver 0.99.newide
Partition check:
 hda: hda1 hda2 hda3
 hdc: [PTBL] [2434/255/63] hdc1 hdc2 hdc3

Re: OSB4 issues on 2.4.19-ac4

[Jonathan Lundell]

At 11:01 PM +0100 8/6/02, Alan Cox wrote:
>On Tue, 2002-08-06 at 19:55, Samuel Flory wrote:
>>    It appears that the OSB4 ide controller isn't working on ac4.  I have
>>  a Tyan 2515, and 2518 which hang when dma is enabled.
>
>DMA enabled by you or by the driver. Right now the driver isnt supposed
>to be enabling DMA on OSB4

FWIW, we're building systems with OSB4s, and can consistently 
generate the advertised IDE corruption if we enable Ultra DMA (this 
is with RH 2.4.9-31, which has an extra OSB4 warning message; the 
message correlates with on-disk corruption).

After suffering with PIO for a month or three, we did fairly 
extensive testing with multiword DMA (non-Ultra), and are feeling 
confident enough about it to leave it turned on.
-- 
/Jonathan Lundell.

Re: OSB4 issues on 2.4.19-ac4

[Alan Cox]

On Tue, 2002-08-06 at 19:55, Samuel Flory wrote:
>   It appears that the OSB4 ide controller isn't working on ac4.  I have
> a Tyan 2515, and 2518 which hang when dma is enabled.

DMA enabled by you or by the driver. Right now the driver isnt supposed
to be enabling DMA on OSB4

Re: OSB4 issues on 2.4.19-ac4

[Alan Cox]

On Tue, 2002-08-06 at 21:58, Jonathan Lundell wrote:
> After suffering with PIO for a month or three, we did fairly 
> extensive testing with multiword DMA (non-Ultra), and are feeling 
> confident enough about it to leave it turned on.

I'm confident about MWDMA too, thats why my notes I post has it down as
a known problem to sort that last bit out.

Re: OSB4 issues on 2.4.19-ac4

[Samuel Flory]

  Manually via hdparm.  The driver leaves it off.

On Tue, 2002-08-06 at 15:01, Alan Cox wrote:
> On Tue, 2002-08-06 at 19:55, Samuel Flory wrote:
> >   It appears that the OSB4 ide controller isn't working on ac4.  I have
> > a Tyan 2515, and 2518 which hang when dma is enabled.
> 
> DMA enabled by you or by the driver. Right now the driver isnt supposed
> to be enabling DMA on OSB4
>