CAPACITY operation. SCSI-3 mandates this to be 2048, but some older
drives like my old Plasmon CD-R report weird numbers between 2048 and
up to 2352 bytes depending on the mode of the last track etc. This in
turn confuses stuff like the slice code since it refuses to work with
devices that do not have a blocksize which is a multiple of 512 bytes.
Reviewed by: ken
libcam/Makefile: Add scsi_da.c to libcam for the new
scsi_format_unit() function.
camcontrol.8: Update the man page for the new format
functionality, and take out the examples section
describing how to do it with 'camcontrol cmd'.
camcontrol.c: New format functionality. Note that unlike the
rest of the camcontrol subcommands, this one is
interactive by default. Because of the potential
destructiveness of the format command, I thought
it necessary to get confirmation from the user
before spamming a disk. You can disable the
interactive behavior, and the status meter with
command line arguments.
scsi_da.c: Add the new scsi_format_unit() cdb building
function and use #ifdef _KERNEL to make this file
compile in both the kernel and userland. The
format unit function is currently only defined in
the non-kernel case, because nothing in the kernel
is using it. If that changes, it should be
un-ifdefed and compiled in both cases.
scsi_da.h: New function declaration, CDB structure and format
data structures.
Thanks to Nick Hibma for providing some valuable input on these changes.
to various pmap_*() functions instead of looking up the physical address
and passing that. In many cases, the first thing the pmap code was doing
was going to a lot of trouble to get back the original vm_page_t, or
it's shadow pv_table entry.
Inspired by: John Dyson's 1998 patches.
Also:
Eliminate pv_table as a seperate thing and build it into a machine
dependent part of vm_page_t. This eliminates having a seperate set of
structions that shadow each other in a 1:1 fashion that we often went to
a lot of trouble to translate from one to the other. (see above)
This happens to save 4 bytes of physical memory for each page in the
system. (8 bytes on the Alpha).
Eliminate the use of the phys_avail[] array to determine if a page is
managed (ie: it has pv_entries etc). Store this information in a flag.
Things like device_pager set it because they create vm_page_t's on the
fly that do not have pv_entries. This makes it easier to "unmanage" a
page of physical memory (this will be taken advantage of in subsequent
commits).
Add a function to add a new page to the freelist. This could be used
for reclaiming the previously wasted pages left over from preloaded
loader(8) files.
Reviewed by: dillon
Add a SA_QUIRK_NO_MODESEL type and use it for the OnStream real SCSI
device (not the broken one). This one is still broken in that it can't
be set to the same fixed block size it reports [ unflattering comments
about this company elided ].
If we're unable to set buffered mode on, complain, but drive on. It's
not a fatal error to not be in buffered mode.
<sys/bio.h>.
<sys/bio.h> is now a prerequisite for <sys/buf.h> but it shall
not be made a nested include according to bdes teachings on the
subject of nested includes.
Diskdrivers and similar stuff below specfs::strategy() should no
longer need to include <sys/buf.> unless they need caching of data.
Still a few bogus uses of struct buf to track down.
Repocopy by: peter
Exceptions:
Vinum untouched. This means that it cannot be compiled.
Greg Lehey is on the case.
CCD not converted yet, casts to struct buf (still safe)
atapi-cd casts to struct buf to examine B_PHYS
(Much of this done by script)
Move B_ORDERED flag to b_ioflags and call it BIO_ORDERED.
Move b_pblkno and b_iodone_chain to struct bio while we transition, they
will be obsoleted once bio structs chain/stack.
Add bio_queue field for struct bio aware disksort.
Address a lot of stylistic issues brought up by bde.
- Mike Smith discovered a panic in the changer probe code if the probe
command (mode sense) fails. So we need to release the CCB used in the
probe before we unlock the peripheral. (i.e. the same fix mjacob put in
the CD and DA drivers)
- A newline was missing in a warning message. (PR kern/17512)
PR: kern/17512
Submitted by: Louis Mamakos <louie@uu.net> (newline fix)
field in struct buf: b_iocmd. The b_iocmd is enforced to have
exactly one bit set.
B_WRITE was bogusly defined as zero giving rise to obvious coding
mistakes.
Also eliminate the redundant struct buf flag B_CALL, it can just
as efficiently be done by comparing b_iodone to NULL.
Should you get a panic or drop into the debugger, complaining about
"b_iocmd", don't continue. It is likely to write on your disk
where it should have been reading.
This change is a step in the direction towards a stackable BIO capability.
A lot of this patch were machine generated (Thanks to style(9) compliance!)
Vinum users: Greg has not had time to test this yet, be careful.
an HBA. Garbage in this field confuses the driver in targdone().
o When completing a CCB on behalf of a user process, we need to
*de-queue* the ccb from our pending ccb list, not queue it again.
o All continue target I/O operations need to have a timeout set.
We use 5 seconds throughout this driver.
o Remove some logging printfs.
o During abort processing, remove ccbs that are on the pending queue
from the pending queue, not the work queue.
256 bytes) caused it to break on many devices.
The SCSI spec says that for commands with 8-bit length fields, a value of 0
means 256 bytes. As it turns out, many devices don't deal with that
properly. Some interpret the 0 as 0, and return no data. Others return
more than 256 bytes of data, and cause an overrun.
The fix is to tell the device we've only allocated SHORT_INQUIRY_LENGTH (36
bytes) of inquiry data, instead of sizeof(struct scsi_inquiry_data).
camcontrol.c: Change inq_len in the call to scsi_inquiry() to
SHORT_INQUIRY_LENGTH, and add a long comment
explaining the reason for the change.
scsi_all.h: Add a comment above the definitinon of
SHORT_INQUIRY_LENGTH alerting people that it is
both the initial probe inquiry length, and the
minimum amount of data needed for scsi_print_inquiry()
to function.
scsi_all.c: Add a comment about SHORT_INQUIRY_LENGTH being the
minimum amount of data needed for
scsi_print_inquiry() to function.
Reviewed by: gibbs
Approved by: jkh
Reported by: "John W. DeBoskey" <jwd@unx.sas.com>
that there's sense to send with status (if the SIM does it), and
then clear any pending contingent allegiance state for this initiator
if the SIM actually did send the sense data.
Widen MAX_INITITATORS to 256- that's still not quite right, but will
accomodate the widest Fibre Channel support in FreeBSD now.
Obtained from:(partially) gibbs@freebsd.org
full size. Define a SHORT_INQUIRY_LENGTH for use during initial
probing (covers the size used previously). Define some SPC-2 related
fields (and define the revision code for SPC-2) which includes some
further SPI-3 defines. Don't go all the way (256 bytes) for the structure-
stop 4 bytes short- because we haven't auditted the source base to find
any u_int8_t potential overflow issues. Add RBC (single byte device)
and OCR (Optical Character Reader) device type codes.
Approved by JKH.
Reviewed by: gibbs@freebsd.org, ken@freebsd.org
to be more platform independent. Add a ses_hlptxt structure definition
and retrieval ioctl for when we are able to retrieve object help text
SES Objects can have up to 64 KBytes of associated 'help' text- the
Sun A5000 uses this, for example, to give physical location information
(e.g., 'left power supply').
to be created at init time. The unit devices are created at
ctor when new instances are created and bound and destroyed
when that instance is closed. As such, there is just s single
static control dev_t for this driver (the per-unit dev_t's are
still in the softc).
When we have decommissionable periph drivers, a destroy_device
on the control device will have to called.
is an application space macro and the applications are supposed to be free
to use it as they please (but cannot). This is consistant with the other
BSD's who made this change quite some time ago. More commits to come.
second LUN to show up.
mjacob's change (which is correct) in rev 1.21 of cam_periph.c to elminiate
infinite retries of the SCSI busy status bit seems to have broken probing
of Pioneer changers that aren't already quirked.
The right way to fix this is probably to change things around so we can
guarantee 100% sequential probing of LUN-based changers even if they aren't
quirked. This should fix things for now, though.
