From: matthieu castet Date: Wed, 19 Mar 2008 18:40:52 +0000 (+0100) Subject: USB: mass storage: emulation of sat scsi_pass_thru with ATACB X-Git-Tag: v2.6.26-rc1~1061^2~66 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d277064e7e16d02e0078a6bc1820764ae00dea87;p=pandora-kernel.git USB: mass storage: emulation of sat scsi_pass_thru with ATACB I have got a cypress usb-ide bridge and I would like to tune or monitor my disk with tools like hdparm, hddtemp or smartctl. My controller support a way to send raw ATA command to the disk with something call atacb (see http://download.cypress.com.edgesuite.net/design_resources/datasheets/contents/cy7c68300c_8.pdf). Atacb support can be added for each application, but there is some disadvantages : - all application need to be patched - A race is possible if there other accesses, because the emulation can be split in 2 atacb scsi transactions. One for sending the command, one for reading the register (if ck_cond is set). I have implemented the emulation in usb-storage with a special proto_handler, and an unsual entry. Signed-off-by: Matthieu CASTET Signed-off-by: Matthew Dharm Signed-off-by: Greg Kroah-Hartman --- Reading git-diff-tree failed