diff options
| author | matthieu castet <castet.matthieu@free.fr> | 2008-03-19 19:40:52 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2008-04-24 21:16:42 -0700 |
| commit | d277064e7e16d02e0078a6bc1820764ae00dea87 (patch) | |
| tree | 18f78d06f8bc3d5a57a04ac46d4f75ca5757faad /drivers/usb/storage/scsiglue.c | |
| parent | dda43a0e03a33dd716fb34f812b1af614f74daff (diff) | |
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 <castet.matthieu@free.fr>
Signed-off-by: Matthew Dharm <mdharm-usb@one-eyed-alien.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/storage/scsiglue.c')
| -rw-r--r-- | drivers/usb/storage/scsiglue.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/usb/storage/scsiglue.c b/drivers/usb/storage/scsiglue.c index 8c1e2954f3b..5405ba8cd9d 100644 --- a/drivers/usb/storage/scsiglue.c +++ b/drivers/usb/storage/scsiglue.c @@ -132,7 +132,7 @@ static int slave_configure(struct scsi_device *sdev) /* Disk-type devices use MODE SENSE(6) if the protocol * (SubClass) is Transparent SCSI, otherwise they use * MODE SENSE(10). */ - if (us->subclass != US_SC_SCSI) + if (us->subclass != US_SC_SCSI && us->subclass != US_SC_CYP_ATACB) sdev->use_10_for_ms = 1; /* Many disks only accept MODE SENSE transfer lengths of |