error. It now correctly sets bp->b_resid to the full size of the buffer.
The failed SCSI read/write command allways contains the complete buffer.
When encountering a read (or write) error, the scsipi stack sets the
xs->resid to zero since the command has been accepted by the drive. The
scsi command set does not allow a partial read or write to be performed and
will signal a success or an error.
the device and since we count from zero its equal to the number of sectors
and thus one higher than the last sector.
This fixes the read/write problems on the (raw) device where the last
sector was not readable/writable.
that callers are not responsible for initializing the fields. Store the name
inside the struct instead of maintaining a pointer to external storage, or
leaked memory (nfs case).
-allow to open RAW_PART, even if readdisklabel() doesn't like what it sees
-fix PERIPH_MEDIA_LOADED toggling on every other open attempt
-Don't reset PERIPH_REMOVABLE if prevent/allow fails - this is normal
for floppy drives. The flag is required for media change detection.
Honour XS_CTL_SILENT for the "no door lock" printouts, and set that flag
where scsipi_prevent() is called during open/close.
Tested with a USB floppy and a USB cardreader.
- struct timeval time is gone
time.tv_sec -> time_second
- struct timeval mono_time is gone
mono_time.tv_sec -> time_uptime
- access to time via
{get,}{micro,nano,bin}time()
get* versions are fast but less precise
- support NTP nanokernel implementation (NTP API 4)
- further reading:
Timecounter Paper: http://phk.freebsd.dk/pubs/timecounter.pdf
NTP Nanokernel: http://www.eecis.udel.edu/~mills/ntp/html/kern.html
if readdisklabel() returned an error.
sdopen(): Return an error if sdgetdisklabel() returns an error. This prevents
a crash in spec_open() (and possibly elsewhere) if a sd device is detached in
the middle of sdopen().
- use vmspace rather than proc or lwp where appropriate.
the latter is more natural to specify an address space.
(and less likely to be abused for random purposes.)
- fix a swdmover race.
management to be passed in mmc_discinfo's device capabilities.
When a device reports support for this the hardware will automatically
remap sectors on read- or write-errors. CD-MRW, DVD+MRW, DVD-RAM and BR-RE
support these.
ioctl's and their structures are currenly hidden from inclusion for normal
userland applications to allow the MMC abstraction interface to mature
first.
Its useage is mainly for applications dedicated to handling and processing
SCSI MMC compliant devices and their media. Examples of these are CDs, DVDs
and comparable optical devices but also some magnetic swapable devices that
present themselves as a SCSI MMC compliant device.
Its current use is currently the to be committed in-kernel UDF filingsystem
and its userland tools.
current recorded extent and not the complete maximum extent of the disc.
An empty CD/DVD disc is seen as having an invalid length and given 800 Mb
size. This makes it possible to write to a CD-R using `dd' as some tend to
do.
However when an extent is recorded the initial recorded length is seen as
valid and is thus set as absolute upperbound to read and write actions
preventing extention of the disc.
Committed after consultation on tech-kern with a positive advice by Manuel
Bouyer.
TOC reading. Note that the external interfaces haven't changed. Only the
formatted toc is requestable.
The read msinfo command hasn't been changed in this patch though it could
become more clever using the CD_TOC_MSINFO format.
so don't support the SCSI_PREVENT_ALLOW_MEDIUM_REMOVAL command.
When an "Illegal field in CDB" is reported for this command, mark the
device as non-removable (which is always true for USB keys from the SCSI
point of view), print a message and ignore the error.
For DIOCLOCK, return ENOTTY if the device is not removable instead of
trying a command which will fail.
Fix a problem reported by Hubert Feyrer for some USB umass devices, patch
tested by him.
shouldn't claim it either, but a buggy software shouldn't be able to crash
the kernel anyway). Should fix port-sparc64/31925 by Johan A.van Zanten
(which should really be kern/31925).
Analysed and patch tested by Martin Husemann.
in some drivers including wd and scsi.
- physio: if a caller provided a buf, stick to use it
because some drivers use it as an identifier.
- sprinkle simple_locks.
- scsistrategy: rather than issueing an async request and
waiting for its completion, simply issue a sync request.
the way to wait for the completion had an assumption that
B_CALL is never used. it isn't the case after the recent
physio() changes.
pointed/analyzed/tested by Martin Husemann.
- rather than embedding bufq_state in driver softc,
have a pointer to the former.
- move bufq related functions from kern/subr_disk.c to kern/subr_bufq.c.
- rename method to strategy for consistency.
- move some definitions which don't need to be exposed to the rest of kernel
from sys/bufq.h to sys/bufq_impl.h.
(is it better to move it to kern/ or somewhere?)
- fix some obvious breakage in dev/qbus/ts.c. (not tested)
standard scheme:
if (<configured> != <wildcard> && <configured> != <real>)
then fail
else
ask device match function
This is handled by config_stdsubmatch() now.
explicitely by a plain integer array
the length in now known to all relevant parties, so this avoids
duplication of information, and we can allocate that thing in
drivers without hacks
returns EINVAL, indicating that DMA cannot be done for this transfer.
Fall back to PIO in this case.
- Add a geodeide_dma_init() routine that checks to make sure that transfers
start on a 16 byte boundary, returning EINVAL if not. Works around a chip
bug that causes a hard system hang.
Problem reported and patch tested by Erik Fair.
(they already had default values; we could kill the [...=N] syntax
completely or at least have config(8) assume that a locator with
a default is optional)
everything "scsi_*", since we really are talking about the SCSI command
set, ATAPI transport not withstanding. Improve the names of many structures,
and prepend "SCSI_" onto all SCSI command opcodes. Place items described
by the SCSI Primary Commands document into scsi_spc.h.
for TOC response format 1 and 2 are mandatory on CD/DVD too and provide
more information.
Next an IOCTL needs to be implemented that can read all TOC formats in a
generic way. This is pending.
If the number of logical blocks exceeds the maximum value that is able to be
specified in the RETURNED LOGICAL BLOCK ADDRESS field, the device server
shall set the RETURNED LOGICAL BLOCK ADDRESS field to FFFFFFFFh. The
application client should then issue a READ CAPACITY (16) command (see 5.11)
to retrieve the READ CAPACITY (16) parameter data.
Implement this in scsipi_size().
First issue in kern/28514.
christos