On Wed, Feb 23, 2011 at 2:24 AM, Damon Lynch <damonlynch@xxxxxxxxx> wrote: > 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? The CF reader portion itself likely isn't identifiable (it's probably mostly just passive circuitry). The PATA adapter portion might be identifiable, unless it just has a totally generic JMicron device ID.. What does lspci -vvnn show for it? -- 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
