This patchset extends the SCSI generic (sg) driver found in lk 5.3 .
The sg driver has a version number which is visible via
ioctl(SG_GET_VERSION_NUM) and is bumped from 3.5.36 to 4.0.03 by this
patchset. The additions and changes are described in some detail in
this long webpage:
http://sg.danny.cz/sg/sg_v40.html
Most new features described in the above webpage are not implemented
in this patchset. Features that are not included are file descriptor
sharing, request sharing, multiple requests (in one invocation) and
the extended ioctl(). A later patchset may add those features. The
SG_IOSUMIT, SG_IOSUBMIT_V3, SG_IORECEIVE and SG_IORECEIVE_V3 ioctls
are added in this patchset.
Testing:
The sg3_utils package has several extensions in sg3_utils-1.45 beta
(revision 829 (see http://sg.danny.cz/sg)) to support and test the
version 4 sg driver presented in this patchset.
The new and revised testing utilities are outlined on the
same webpage as above in the second half of the section
titled: "15 Downloads and testing".
This patchset is against Martin Petersen's 5.4/scsi-queue branch.
To apply this patchset to lk 5.2 and earlier, the ktime_get_boottime_ns()
call needs to be changed back to ktime_get_boot_ns().
Changes since v1 (sent to linux-scsi list on 20190616):
- change ktime_get_boot_ns() to ktime_get_boottime_ns() to reflect
kernel API change first seen in lk 5.3.0-rc1
Douglas Gilbert (18):
sg: move functions around
sg: remove typedefs, type+formatting cleanup
sg: sg_log and is_enabled
sg: rework sg_poll(), minor changes
sg: bitops in sg_device
sg: make open count an atomic
sg: move header to uapi section
sg: speed sg_poll and sg_get_num_waiting
sg: sg_allow_if_err_recovery and renames
sg: remove most access_ok functions
sg: replace rq array with lists
sg: sense buffer rework
sg: add sg v4 interface support
sg: rework debug info
sg: add 8 byte SCSI LUN to sg_scsi_id
sg: expand sg_comm_wr_t
sg: add sg_iosubmit_v3 and sg_ioreceive_v3 ioctls
sg: bump version to 4.0.03
drivers/scsi/sg.c | 4373 ++++++++++++++++++++++++++--------------
include/scsi/sg.h | 268 +--
include/uapi/scsi/sg.h | 373 ++++
3 files changed, 3269 insertions(+), 1745 deletions(-)
create mode 100644 include/uapi/scsi/sg.h
--
2.17.1
