2011/2/23 Damon Lynch <damonlynch@xxxxxxxxx>: > On 02/22/2011 11:48 PM, Robert Hancock wrote: >> >> The CF adapter probably doesn't support the 80-wire cable detect protocol >> properly so the kernel thinks there's only a 40-wire cable connected to it. >> You can try libata.force=80c on the kernel command line and see what that >> does. >> > > It seemed to work. I got read speeds of ~55MB/s, which is ok because I was > writing what was being read to an SSD. > > dmesg: > > [ 1.651748] pata_jmicron 0000:05:00.0: PCI INT A -> GSI 19 (level, low) > -> IRQ 19 > [ 1.651783] pata_jmicron 0000:05:00.0: setting latency timer to 64 > [ 1.652212] scsi0 : pata_jmicron > [ 1.652813] scsi1 : pata_jmicron > [ 1.652855] ata1: PATA max UDMA/100 cmd 0x4020 ctl 0x4014 bmdma 0x4000 > irq 19 > [ 1.652857] ata2: PATA max UDMA/100 cmd 0x4018 ctl 0x4010 bmdma 0x4008 > irq 19 > [ 1.850716] ata1: FORCE: cable set to 80c > [ 1.850723] ata1.00: CFA: TRANSCEND, 20091215, max UDMA/133 > [ 1.850726] ata1.00: 125059072 sectors, multi 0: LBA > [ 1.870111] usb 1-6: new high speed USB device using ehci_hcd and address > 3 > [ 1.890684] ata1.00: configured for UDMA/100 > [ 1.890845] scsi 0:0:0:0: Direct-Access ATA TRANSCEND > 2009 PQ: 0 ANSI: 5 > [ 1.891008] sd 0:0:0:0: Attached scsi generic sg0 type 0 > [ 1.891020] sd 0:0:0:0: [sda] 125059072 512-byte logical blocks: (64.0 > GB/59.6 GiB) > [ 1.891070] sd 0:0:0:0: [sda] Write Protect is off > [ 1.891073] sd 0:0:0:0: [sda] Mode Sense: 00 3a 00 00 > [ 1.891099] sd 0:0:0:0: [sda] Write cache: disabled, read cache: enabled, > doesn't support DPO or FUA > [ 1.892022] sda: sda1 > [ 1.892395] sd 0:0:0:0: [sda] Attached SCSI disk > > What next? Can the CF reader be whitelisted by libata? > -- I don't think thats a safe idea, as not all CF adaptors are created equally, so I could imagine that you could easily break alot of existing machines doing so... -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
