Re: Can't enable anything above DMA(33) on my SIS5513 equipped laptop

[chuck gelm <chuck@gelm.net>]

http://www.cs.helsinki.fi/linux/linux-kernel/2001-00/0473.html

James Grimwood wrote:
> I've got a Packard Bell Easynote H5315 laptop. It contains an SIS5513
> IDE controller.
> 
> Attached to it is a 60GB "SAMSUNG MP0603H" disk as hda, and a "_NEC
> DVD+/-RW ND-6500A" DVD/CD ReWriter as hdc.
> 
> I can't seem to enable anything above UDMA2 for the HDD, and when I
> burn CDs the drive attempts to run at 10x and the whole machine starts
> becoming unresponsive - the mouse pointer in X jerks around, sound
> stops and the buffer status of the CD drive jumps up and down.
> 
> I've tried doing "hdparm -Xudma5 /dev/hda", but when I type 'dmesg' I
> get the following:
> 
> ide0: Speed warnings UDMA 3/4/5 is not functional.
> 
> Is this a driver problem since surely people still can't be making new
> computers that don't support drive speeds above UDMA2... I bought the
> laptop in December, so it's relatively new.
> 
> Now the thing I've noticed (and it's pasted at the bottom of this
> email) is that the drive is connected to the motherboard with a
> 40-wire IDE cable. Is this because 80-wire laptop IDE cables don't
> exist, or has someone tried to save money?
> 
> Is there any way I can make my drive faster?
> 
> uname -a shows:
> Linux hex 2.6.10-gentoo-r4 #7 SMP Wed Jan 26 13:08:48 GMT 2005 i686
> Mobile Intel(R) Pentium(R) 4 CPU 3.20GHz GenuineIntel GNU/Linux
> 
> When booting, this is displayed:
> Uniform Multi-Platform E-IDE driver Revision: 7.00alpha2
> ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
> SIS5513: IDE controller at PCI slot 0000:00:02.5
> SIS5513: chipset revision 0
> SIS5513: not 100% native mode: will probe irqs later
> SIS5513: SiS 962/963 MuTIOL IDE UDMA133 controller
>     ide0: BM-DMA at 0xffa0-0xffa7, BIOS settings: hda:DMA, hdb:DMA
>     ide1: BM-DMA at 0xffa8-0xffaf, BIOS settings: hdc:DMA, hdd:DMA
> Probing IDE interface ide0...
> hda: SAMSUNG MP0603H, ATA DISK drive
> elevator: using anticipatory as default io scheduler
> ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
> Probing IDE interface ide1...
> hdc: _NEC DVD+/-RW ND-6500A, ATAPI CD/DVD-ROM drive
> ide1 at 0x170-0x177,0x376 on irq 15
> Probing IDE interface ide2...
> ide2: Wait for ready failed before probe !
> Probing IDE interface ide3...
> ide3: Wait for ready failed before probe !
> Probing IDE interface ide4...
> ide4: Wait for ready failed before probe !
> Probing IDE interface ide5...
> ide5: Wait for ready failed before probe !
> hda: max request size: 1024KiB
> hda: 117304992 sectors (60060 MB) w/8192KiB Cache, CHS=16383/255/63, UDMA(33)
> hda: cache flushes supported
>  /dev/ide/host0/bus0/target0/lun0: p1 p2 p3
> hdc: ATAPI 24X DVD-ROM DVD-R CD-R/RW drive, 2048kB Cache, UDMA(33)
> Uniform CD-ROM driver Revision: 3.20
> 
> This is the contents of /proc/ide/sis:
> SiS 5513 Ultra 133 chipset
> --------------- Primary Channel ---------------- Secondary Channel -------------
> Channel Status: On                               On
> Operation Mode: Compatible                       Compatible
> Cable Type:     40 pins                          40 pins
> Drive 0:
>                 UDMA Enabled                     UDMA Enabled
>                 UDMA Cycle Time    6 CLK         UDMA Cycle Time    6 CLK
> Drive 1:
>                 UDMA Disabled                    UDMA Disabled
>                 UDMA Cycle Time    12 CLK        UDMA Cycle Time    12 CLK
>