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SubjectRe: 2.4.xx IDE development policy

Hi Andre,

Here's the patch that's given me flawless performance on a PDC20269 and
the Maxtor 160GB since December -- I bought the drive when I noticed you
had a driver for it. This is E-IDE driver revision 6.31 from mid-December
2001, with 2.4.16 mainline. I and my students use the large drive largely
for digital video; it's mounted through NFS on another machine also
running 2.4.16. There's a CD drive and a DVD writer on the same machine as
the Promise card, and they work great. I use the DVD writer for vanilla
ISO images of compressed video; there may of course be modes it doesn't
handle. For a while I had a CDRW that also worked fine.

Good news that you're working with the Promise guys. My point is don't
spread yourself too thin. Consolidate the stuff that's working, and don't
destabilize perfectly good code bending over backwards for poor hardware.
Some girls are just too hard to please to be worth the trouble.

And hey, great work!


Kernel command line: auto BOOT_IMAGE=Linux ro root=1608
ide_setup: hdb=ide-scsi
ide_setup: hdd=ide-scsi
ide_setup: ide2=ata66

Uniform Multi-Platform E-IDE driver Revision: 6.31
ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
PIIX4: IDE controller on PCI bus 00 dev 39
PIIX4: chipset revision 1
PIIX4: not 100% native mode: will probe irqs later
ide0: BM-DMA at 0xf000-0xf007, BIOS settings: hda:DMA, hdb:DMA
ide1: BM-DMA at 0xf008-0xf00f, BIOS settings: hdc:DMA, hdd:DMA
PDC20269: IDE controller on PCI bus 00 dev 68
PCI: Found IRQ 7 for device 00:0d.0
PDC20269: chipset revision 2
PDC20269: not 100% native mode: will probe irqs later
PDC20269: ATA-66/100 forced bit set (WARNING)!!
ide2: BM-DMA at 0xbc00-0xbc07, BIOS settings: hde:pio, hdf:pio
ide3: BM-DMA at 0xbc08-0xbc0f, BIOS settings: hdg:pio, hdh:pio
hda: Maxtor 91360D8, ATA DISK drive
hdc: Maxtor 51536U3, ATA DISK drive
hde: Maxtor 4G160J8, ATA DISK drive
ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
ide1 at 0x170-0x177,0x376 on irq 15
ide2 at 0xac00-0xac07,0xb002 on irq 7
hda: 26563824 sectors (13601 MB) w/256KiB Cache, CHS=1653/255/63, UDMA(33)
hdc: 30015216 sectors (15368 MB) w/2048KiB Cache, CHS=29777/16/63, UDMA(33)
hde: 320173056 sectors (163929 MB) w/2048KiB Cache, CHS=317632/255/63, UDMA(133)
Partition check:
hda: hda1 hda2 < hda5 >
hdc: [PTBL] [1868/255/63] hdc2 < hdc5 hdc6 hdc7 hdc8 >
hde: hde1

SCSI subsystem driver Revision: 1.00
scsi0 : SCSI host adapter emulation for IDE ATAPI devices
Vendor: E-IDE Model: CD-ROM 48X/AKU Rev: U22
Type: CD-ROM ANSI SCSI revision: 02
Vendor: PIONEER Model: DVD-RW DVR-104 Rev: 1.20
Type: CD-ROM ANSI SCSI revision: 02
Attached scsi CD-ROM sr0 at scsi0, channel 0, id 0, lun 0
Attached scsi CD-ROM sr1 at scsi0, channel 0, id 1, lun 0
sr0: scsi3-mmc drive: 0x/48x xa/form2 cdda tray
Uniform CD-ROM driver Revision: 3.12
sr1: scsi3-mmc drive: 15x/15x writer cd/rw xa/form2 cdda tray

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