fatal.. A `long write in progress' is a retry again later command that is
issued when a device returns immediately after a write request but needs
some time before it can handle read requests.
simply return zero for logical block size. In either case, use the sector
length reported by READ_CAPACITY instead of defaulting to 512 bytes.
This partially addresses the problems reported in PR port-i386/34707 and
PR kern/34737. Namely the incorrectly reported drive geometry and the
'hanging' issue.
However, since the device in question reports 2048-byte physical sectors
it will remain unusable until DEV_BSIZE is banished.
structures can thus be misaligned for DMA when declared on stack.
The current atapi code accepts the misaligned dma's only screw's them up.
This small patch disables DMA for the rare transactions that are
misaligned. Note that all bulk-transfers are aligned due to page sizes.
See PR kern/34689
read/write action. It would panic on a diagnosic assertion. When a scsi
read/write command fails, the whole extent is gone bad so mark all as not
done.
pseudo array in the structure. The scsi command issued used
sizeof(scsipi_read_discinfo_data) but included thus the last byte that
wasn't going to be inspected anyway. Using the constant
READ_DISCINFO_BIGSIZE fixes the bug.
Even though SCSI adapters *should* accept odd lengths, the Sun U10
(sparc64's) crashes in bus_space_read_multi_stream_2(). That explains the
crash.
NOTE: somewhere in NetBSD/sparc64's atapibus support there is the
assumption on the even size; this needs to be fixed! (Hi Sparc64 portmaster
:-) )
The PIOBM is used by only one driver (will be added later,
stay tuned) and intruduce an attribute "ata_piobm" so that
it will be conditionally compiled in.
The "ata_dma" (busmastering transfer using ATA DMA mode) and
"ata_udma" (busmastering transfer using ATA Ultra DMA mode)
attributes are also added for consistency, but unused for now.
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.
