[2.6.18-rc2-mm1] libata: DMA speed too slow for cdrecord

From: J.A. MagallÃn
Date: Sat Jul 29 2006 - 17:52:37 EST


Hi...

(plz, linux-ide people, CC me, I'm subscribed to linux-kernel but not -ide, thx)

Using -rc2-mm1+libata fixes from
http://marc.theaimsgroup.com/?l=linux-kernel&m=115415195508235&w=2
(it was the same without the patch)
I get this:

werewolf:/store/tmp/burn# cdrecord dev=/dev/sr0 gno*.iso
cdrecord: No write mode specified.
cdrecord: Asuming -tao mode.
cdrecord: Future versions of cdrecord may have different drive dependent defaults.
Cdrecord-Clone 2.01.01a04 (i686-pc-linux-gnu) Copyright (C) 1995-2006 JÃrg Schilling
scsidev: '/dev/sr0'
devname: '/dev/sr0'
scsibus: -2 target: -2 lun: -2
Warning: Open by 'devname' is unintentional and not supported.
Linux sg driver version: 3.5.27
Using libscg version 'schily-0.8'.
Device type : Removable CD-ROM
Version : 5
Response Format: 2
Capabilities :
Vendor_info : 'HL-DT-ST'
Identifikation : 'DVDRAM GSA-4120B'
Revision : 'A111'
Device seems to be: Generic mmc2 DVD-R/DVD-RW.
Using generic SCSI-3/mmc CD-R/CD-RW driver (mmc_cdr).
Driver flags : MMC-3 SWABAUDIO BURNFREE
Supported modes: TAO PACKET SAO SAO/R96P SAO/R96R RAW/R16 RAW/R96P RAW/R96R
Speed set to 7056 KB/s
cdrecord: DMA speed too slow (OK for 8x). Cannot write at speed 40x.
cdrecord: Max DMA data speed is 8.
cdrecord: Try to use 'driveropts=burnfree'.

Uh ? I have always burn at x40 with IDE. Capabilities for the burner say:
Number of supported write speeds: 6
Write speed # 0: 7056 kB/s CLV/PCAV (CD 40x, DVD 5x)
Write speed # 1: 5645 kB/s CLV/PCAV (CD 32x, DVD 4x)
Write speed # 2: 4234 kB/s CLV/PCAV (CD 24x, DVD 3x)
Write speed # 3: 2822 kB/s CLV/PCAV (CD 16x, DVD 2x)
Write speed # 4: 1411 kB/s CLV/PCAV (CD 8x, DVD 1x)
Write speed # 5: 706 kB/s CLV/PCAV (CD 4x, DVD 0x)

Any idea ?

More info:

werewolf:/store/tmp/burn# lsscsi
[0:0:0:0] cd/dvd HL-DT-ST DVDRAM GSA-4120B A111 /dev/sr0
[0:0:1:0] disk IOMEGA ZIP 250 51.G /dev/sda
[1:0:0:0] disk ATA ST3120022A 3.06 /dev/sdb
[1:0:1:0] cd/dvd TOSHIBA DVD-ROM SD-M1712 1004 /dev/sr1
[2:0:0:0] disk ATA ST3200822AS 3.01 /dev/sdc

dmesg:

libata version 2.00 loaded.
ata_piix 0000:00:1f.1: version 2.00ac6
ACPI: PCI Interrupt 0000:00:1f.1[A] -> GSI 18 (level, low) -> IRQ 16
PCI: Setting latency timer of device 0000:00:1f.1 to 64
ata1: PATA max UDMA/100 cmd 0x1F0 ctl 0x3F6 bmdma 0xF000 irq 14
scsi0 : ata_piix
ata1.00: ATAPI, max UDMA/33
ata1.01: ATAPI, max MWDMA0, CDB intr
ata1.00: configured for PIO3
ata1.01: configured for PIO3
Vendor: HL-DT-ST Model: DVDRAM GSA-4120B Rev: A111
Type: CD-ROM ANSI SCSI revision: 05
Vendor: IOMEGA Model: ZIP 250 Rev: 51.G
Type: Direct-Access ANSI SCSI revision: 05

werewolf:/store/tmp/burn# cdrecord dev=/dev/sr0 -prcap
Cdrecord-Clone 2.01.01a04 (i686-pc-linux-gnu) Copyright (C) 1995-2006 JÃrg Schilling
scsidev: '/dev/sr0'
devname: '/dev/sr0'
scsibus: -2 target: -2 lun: -2
Warning: Open by 'devname' is unintentional and not supported.
Linux sg driver version: 3.5.27
Using libscg version 'schily-0.8'.
Device type : Removable CD-ROM
Version : 5
Response Format: 2
Capabilities :
Vendor_info : 'HL-DT-ST'
Identifikation : 'DVDRAM GSA-4120B'
Revision : 'A111'
Device seems to be: Generic mmc2 DVD-R/DVD-RW.

Drive capabilities, per MMC-3 page 2A:

Does read CD-R media
Does write CD-R media
Does read CD-RW media
Does write CD-RW media
Does read DVD-ROM media
Does read DVD-R media
Does write DVD-R media
Does read DVD-RAM media
Does write DVD-RAM media
Does support test writing

Does read Mode 2 Form 1 blocks
Does read Mode 2 Form 2 blocks
Does read digital audio blocks
Does restart non-streamed digital audio reads accurately
Does support Buffer-Underrun-Free recording
Does read multi-session CDs
Does read fixed-packet CD media using Method 2
Does not read CD bar code
Does not read R-W subcode information
Does read raw P-W subcode data from lead in
Does return CD media catalog number
Does return CD ISRC information
Does support C2 error pointers
Does not deliver composite A/V data

Does play audio CDs
Number of volume control levels: 256
Does support individual volume control setting for each channel
Does support independent mute setting for each channel
Does not support digital output on port 1
Does not support digital output on port 2

Loading mechanism type: tray
Does support ejection of CD via START/STOP command
Does not lock media on power up via prevent jumper
Does allow media to be locked in the drive via PREVENT/ALLOW command
Is not currently in a media-locked state
Does not support changing side of disk
Does not have load-empty-slot-in-changer feature
Does not support Individual Disk Present feature

Maximum read speed: 7056 kB/s (CD 40x, DVD 5x)
Current read speed: 7056 kB/s (CD 40x, DVD 5x)
Maximum write speed: 7056 kB/s (CD 40x, DVD 5x)
Current write speed: 7056 kB/s (CD 40x, DVD 5x)
Rotational control selected: CLV/PCAV
Buffer size in KB: 2048
Copy management revision supported: 1
Number of supported write speeds: 6
Write speed # 0: 7056 kB/s CLV/PCAV (CD 40x, DVD 5x)
Write speed # 1: 5645 kB/s CLV/PCAV (CD 32x, DVD 4x)
Write speed # 2: 4234 kB/s CLV/PCAV (CD 24x, DVD 3x)
Write speed # 3: 2822 kB/s CLV/PCAV (CD 16x, DVD 2x)
Write speed # 4: 1411 kB/s CLV/PCAV (CD 8x, DVD 1x)
Write speed # 5: 706 kB/s CLV/PCAV (CD 4x, DVD 0x)

Supported CD-RW media types according to MMC-4 feature 0x37:
Does write multi speed CD-RW media
Does write high speed CD-RW media
Does write ultra high speed CD-RW media
Does write ultra high speed+ CD-RW media


--
J.A. Magallon <jamagallon()ono!com> \ Software is like sex:
\ It's better when it's free
Mandriva Linux release 2007.0 (Cooker) for i586
Linux 2.6.17-jam04 (gcc 4.1.1 20060724 (prerelease) (4.1.1-3mdk)) #1 SMP PREEMPT
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