No DMA with HTP370 IDE controller

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Hello,

[please CC me upon replying - thank you]

I have a Highpoint 370 PCI IDE controller, and both my 2.6.18.2 and Knoppix 5's 2.6.17 display the following messages:

HPT370: IDE controller at PCI slot 0000:01:09.0
HPT370: chipset revision 3
HPT370: 100% native mode on irq 11
HPT37X: using 33MHz PCI clock
    ide2: BM-DMA at 0xa000-0xa007, BIOS settings: hde:DMA, hdf:DMA
HPT37X: using 33MHz PCI clock
    ide3: BM-DMA at 0xa008-0xa00f, BIOS settings: hdg:pio, hdh:pio
Probing IDE interface ide2...
hde: ST340823A, ATA DISK drive
hdf: ExcelStor Technology J840, ATA DISK drive
ide2 at 0x9000-0x9007,0x9402 on irq 11
Probing IDE interface ide3...
hdg: LITE-ON LTR-52246S, ATAPI CD/DVD-ROM drive
ide3 at 0x9800-0x9807,0x9c02 on irq 11
hde: max request size: 128KiB
hde: 78165360 sectors (40020 MB) w/1024KiB Cache, CHS=65535/16/63, UDMA(100)
hde: cache flushes not supported
 hde:<4>hde: dma_timer_expiry: dma status == 0x61
hde: DMA timeout error
hde: 0 bytes in FIFO
hde: timeout waiting for DMA
hde: dma timeout error: status=0x80 { Busy }
ide: failed opcode was: unknown
hde: DMA disabled
hdf: DMA disabled
ide2: reset: success
 hde1 hde2 <<4>hde: dma_timer_expiry: dma status == 0x21
hde: DMA timeout error
hde: 0 bytes in FIFO
hde: timeout waiting for DMA
hde: dma timeout error: status=0x80 { Busy }
ide: failed opcode was: unknown
hde: DMA disabled
ide2: reset: success
 hde5<4>hde: dma_timer_expiry: dma status == 0x21
hde: DMA timeout error
hde: 0 bytes in FIFO
hde: timeout waiting for DMA
hde: dma timeout error: status=0x80 { Busy }
ide: failed opcode was: unknown
hde: DMA disabled
ide2: reset: success
 hde6 >
hdf: max request size: 512KiB
hdf: 80418240 sectors (41174 MB) w/1719KiB Cache, CHS=16383/255/63
hdf: cache flushes supported
 hdf: unknown partition table
hde: dma_timer_expiry: dma status == 0x21
hde: DMA timeout error
hde: 0 bytes in FIFO
hde: timeout waiting for DMA
hde: dma timeout error: status=0x80 { Busy }
ide: failed opcode was: unknown
hde: DMA disabled
ide2: reset: success

(hdf is naked, there's no error in partition detection)

The same messages appear when manually trying to enable DMA with hdparm. The hdparm reading of hde is:

/dev/hde:
 multcount    = 16 (on)
 IO_support   =  0 (default 16-bit)
 unmaskirq    =  0 (off)
 using_dma    =  0 (off)
 keepsettings =  0 (off)
 readonly     =  0 (off)
 readahead    = 256 (on)
 geometry     = 65535/16/63, sectors = 78165360, start = 0

hda, which is on the mainboard controller and works as hde used to as well, reads:

/dev/hda:
 multcount    = 16 (on)
 IO_support   =  1 (32-bit)
 unmaskirq    =  1 (on)
 using_dma    =  1 (on)
 keepsettings =  0 (off)
 readonly     =  0 (off)
 readahead    = 256 (on)
 geometry     = 65535/16/63, sectors = 117231408, start = 0

In the controller's setup utility, I can choose access modes. If i switch it from UDMA5 to PIO0, the only difference during boot is:

ide2: BM-DMA at 0xa000-0xa007, BIOS settings: hde:pio, hdf:pio

instead of

ide2: BM-DMA at 0xa000-0xa007, BIOS settings: hde:DMA, hdf:DMA

Please help me getting DMA to work with this controller.

Thanks in advance,
~Mik

--
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And say that you don't have no life?
Let me take you by the hand and show you all the geeks of London
I'll show you something to make you change your mind!
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