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| 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 /include | |
| parent | dda43a0e03a33dd716fb34f812b1af614f74daff (diff) | |
| download | op-kernel-dev-d277064e7e16d02e0078a6bc1820764ae00dea87.zip op-kernel-dev-d277064e7e16d02e0078a6bc1820764ae00dea87.tar.gz | |
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 'include')
| -rw-r--r-- | include/linux/usb_usual.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/usb_usual.h b/include/linux/usb_usual.h index 0a40dfa..d9a3bbe 100644 --- a/include/linux/usb_usual.h +++ b/include/linux/usb_usual.h @@ -85,6 +85,7 @@ enum { US_DO_ALL_FLAGS }; #define US_SC_LOCKABLE 0x07 /* Password-protected */ #define US_SC_ISD200 0xf0 /* ISD200 ATA */ +#define US_SC_CYP_ATACB 0xf1 /* Cypress ATACB */ #define US_SC_DEVICE 0xff /* Use device's value */ /* Protocols */ |
