write caching is disabled on both SCSI and IDE disks where large
memory dumps could take up to an hour to complete.
Taking an i386 scsi based system with 512MB of ram and timing (in
seconds) how long it took to complete a dump, the following results
were obtained:
Before: After:
WCE TIME WCE TIME
------------------ ------------------
1 141.820972 1 15.600111
0 797.265072 0 65.480465
Obtained from: Yahoo!
Reviewed by: peter
for the Quantum "MAVERICK 540S" and "LPS525S".
Also, add common string variables, since we seem to have a few Quantum and
Micropolis drives in here.
Fix the 'quantum' variable usage in scsi_all.c that likely got broken when
someone staticized things in cam_xpt.c. (That particular problem would
cause Quantum Fireball ST drives to not get spun up if they were not
already spinning.)
Submitted by: Andre Albsmeier <andre.albsmeier@mchp.siemens.de>
to be obeying the original spec as to what the numeric value means.
Temperature flags are unaffected- these are still the 'pseudo-thermometers'
and overtemp/undertemp warnings will be caught and translated to SES objects
here.
PR: 20475
related patches. These include:
* Mode page editting can be scripted. This involves two
things: first, if stdin is not a tty, changes are read from
stdin rather than invoking $EDITOR. Second, and more
importantly, not all modepage entries must be included in the
change set. This means that camcontrol can now gracefully handle
more intrusive editting from the $EDITOR, including removal or
rearrangement of lines. It also means that you can do stuff
like:
# echo "WCE: 1" | camcontrol modepage da3 -m 8 -e
# newfs /dev/da3
# echo "WCE: 0" | camcontrol modepage da3 -m 8 -e
* Range-checking on user-supplied input values. modeedit.c now
uses the field width specifiers to determine the maximum
allowable value for a field. If the user enters a value larger
than the maximum, it clips the value to the max and warns the
user. This also involved patching cam_cmdparse.c to be more
consistent with regards to the "count" parameter to arg_put
(previously is was the length of strings and 1 for all integral
types). The cam_cdbparse(3) man page was also updated to reflect
the revised semantics.
* In the process, I removed the 64 entry limit on mode pages (not
that we were even close to hitting that limit). This was a nice
side-effect of the other changes.
* Technically, the new mode editting functionality allows editting
of character array entries in mode pages (type 'c' or 'z'),
however since buff_encode doesn't grok them it is currently
useless.
* Camcontrol gained two new options related to mode pages: -l and
-b. The former lists all available mode pages for a given
device. The latter forces mode page display in binary format
(the default when no mode page definition was found in
scsi_modes).
* Added support for mode page names to scsi_modes. Allows names to
be displayed alongside mode numbers in the mode page
listing. Updated scsi_modes to use the new functionality. This
also adds the semicolon into the scsi_modes syntax as an
optional mode page definition terminator. This is needed to name
pages without providing a page format definition.
* Updated scsi_all.h to include a structure describing mode page
headers.
* Added $FreeBSD$ line to scsi_modes.
Inspired by: dwhite
Reviewed by: ken
Clean up the comments related to the high speed
sync rate table for SPI.
scsi_message.h:
Bring in some SCSI3 message terminology. All SCSI2 names
are still preserved for backwards compatibility.
CAM_TAG_ACTION_VALID and CAM_DIR_MASK). Remove redundant
CAM_DEBUG line. Spiff up CAM_DEBUG printout for commands
and move the printout up to the top where we can see it,
even for the pending_ua/pending_ca cass. Add missing
newline in a CAM_DEBUG.
to splx(s) if cam_extend_get fails and we return ENXIO, reset ccb flags
when we push ATIOs back to the SIM, do some data increment fixes, set
priority of command based on whether CAM_DIS_DISCONNECT is set and related
changes).
Add in some more CAM_DEBUG_PERIPH debug statements and also add in support
for TARGIODEBUG which then will enable or disable CAM_DEBUG_PERIPH tracing
for an instance.
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.
The same goes for CD drivers and tape drivers. In systems with mixed IDE
and SCSI, devices in the same priority class will be sorted in attach
order.
Also, the 'CCD' priority is now the 'ARRAY' priority, and a number of
drivers have been modified to use that priority.
This includes the necessary changes to all drivers, except the ATA drivers.
Soren will modify those separately.
This does not include and does not require any change in the devstat
version number, since no known userland applications use the priority
enumerations.
Reviewed by: msmith, sos, phk, jlemon, mjacob, bde
in samount. Make things a lot quieter in samount (and other places). Fix
ridiculous and not so ridiculous bugs in compression related code in both
sagetparams and sasetparams.
saprevent when we're doing an OFFLINE ioctl- saprevent
won't unlock the door, which then causes the unload to
fail on some units.
If we've already unloaded the tape, don't try and rewind and
unload in saclose. This is a slightly riskier change because
we're now going to depend on SA_FLAG_TAPE_MOUNTED to say whether
we've really unloaded the tape. This involved changing the
setting in sadone for tape errors to SA_FLAG_TAPE_FROZEN (which
is more accurate anyway-if you get an EIO you've probably lost
tape position anyway) where it used to just clear the mounted
flag.
Merge the contents (less some trivial bordering the silly comments)
of <vm/vm_prot.h> and <vm/vm_inherit.h> into <vm/vm.h>. This puts
the #defines for the vm_inherit_t and vm_prot_t types next to their
typedefs.
This paves the road for the commit to follow shortly: change
useracc() to use VM_PROT_{READ|WRITE} rather than B_{READ|WRITE}
as argument.
and add a config option that allows one to default to 1FM@EOD for tapes
otherwise unquirked or unknown as to which to prefer. Note that tcopy
will be broken for these tapes until tcopy is fixed.
have been there in the first place. A GENERIC kernel shrinks almost 1k.
Add a slightly different safetybelt under nostop for tty drivers.
Add some missing FreeBSD tags
Diskslice/label code not yet handled.
Vinum, i4b, alpha, pc98 not dealt with (left to respective Maintainers)
Add the correct hook for devfs to kern_conf.c
The net result of this excercise is that a lot less files depends on DEVFS,
and devtoname() gets more sensible output in many cases.
A few drivers had minor additional cleanups performed relating to cdevsw
registration.
A few drivers don't register a cdevsw{} anymore, but only use make_dev().
events, in order to pave the way for removing a number of the ad-hoc
implementations currently in use.
Retire the at_shutdown family of functions and replace them with
new event handler lists.
Rework kern_shutdown.c to take greater advantage of the use of event
handlers.
Reviewed by: green
- increase the default timeout from 10 seconds to 60 seconds
- add a new kernel option, SCSI_PT_DEFAULT_TIMEOUT, that lets users specify
the default timeout for the pt driver to use
- add two new ioctls, one to get the timeout for a given pt device, the
other to set the timeout for a given pt device. The idea is that
userland applications using the device can set the timeout to suit their
purposes. The ioctls are defined in a new header file, sys/ptio.h
PR: 10266
Reviewed by: gibbs, joerg
about a dev_t.
printf("%x", dev) now becomes printf("%s", devtoname(dev)) because
printing actual information about the device is much more useful then
printing a pointer to an address that would never help the developer debug.
Submitted by: phk, bde
Handle errors reported through immediate notify ccbs. This includes
bus resets, BDR messages, and abort messages.
Properly setup CA conditions for errors such as uncorectable parity
in data phases, reselection failure, and IDE message received.
Add a mechanism for stalling the queue of transactions to a particular
initiator while a CA is in progress. Since we don't yet support
tagged I/O, this is largely just for show right now.
Properly bzero our softc at init time (oops).
Add more documentation on what all of the queues in our softc do.
Introduce BUF_STRATEGY(struct buf *, int flag) macro, and use it throughout.
please see comment in sys/conf.h about the flag argument.
Remove strategy argument from all the diskslice/label/bad144
implementations, it should be found from the dev_t.
Remove bogus and unused strategy1 routines.
Remove open/close arguments from dssize(). Pick them up from dev_t.
Remove unused and unfinished setgeom support from diskslice/label/bad144 code.
zero traps. I actually can't believe that this compiler is *sooooo* stupid
that it did a divide when there was 1024L*1024L instead of a right shift by
20. When we get quad type modifiers in kernel printf we can change to this
too (to avoid overflow on > terabyte disk sizes).
The cdevsw_add() function now finds the major number(s) in the
struct cdevsw passed to it. cdevsw_add_generic() is no longer
needed, cdevsw_add() does the same thing.
cdevsw_add() will print an message if the d_maj field looks bogus.
Remove nblkdev and nchrdev variables. Most places they were used
bogusly. Instead check a dev_t for validity by seeing if devsw()
or bdevsw() returns NULL.
Move bdevsw() and devsw() functions to kern/kern_conf.c
Bump __FreeBSD_version to 400006
This commit removes:
72 bogus makedev() calls
26 bogus SYSINIT functions
if_xe.c bogusly accessed cdevsw[], author/maintainer please fix.
I4b and vinum not changed. Patches emailed to authors. LINT
probably broken until they catch up.
Reformat and initialize correctly all "struct cdevsw".
Initialize the d_maj and d_bmaj fields.
The d_reset field was not removed, although it is never used.
I used a program to do most of this, so all the files now use the
same consistent format. Please keep it that way.
Vinum and i4b not modified, patches emailed to respective authors.
code in all initiator type peripheral drivers.
scsi_target.c:
Release ATIO structures that wind up in the 'unkown command queue'
for consumption by our userland counterpart, back to the controller
when the exception for that command is cleared.
SUPPORTED). Add a SA_FLAG_TAPE_FROZEN for (see below).
Add a queue_count field to softc.
Add HP T20* Travan-5 like tape device as a FIXED/512 type device.
Works for me. Add TANDBERG SLR5 as a variable SA_QUIRK_1FM device.
Change VIPER 2525 to 1024 byte blocksize. It's possible other
drives should change too, but see below..
Change argument to sagetparams to be pointer to a sa_comp_t union-
this can be either a DATA COMPRESSION or a DEVICE CONFIGURATION
page. In general compression now tries to use the DATA COMPRESSION
page and if that fails tries the DEVICE CONFIGURATION page.
Change close routine to not rewind tape if there's a failure in either
writing filemarks or in backing over one of two filemarks for a 2FM
at EOT tape- instead mark the tape as 'frozen' and print a message
saying that either an OFFLINE or REWIND or an MTEOM command is needed
to clear this state (all bring certainty back to tape position). Fix
sastrategy to not allow I/O to a frozen tape.
Add MTIOCGETEOTMODEL/MTIOCSETEOTMODEL ioctls that get and set the EOT
model for a tape drive (you can now dynamically change whether it's
a 2 FM @ EOT or 1FM at EOT tape device). This ought to give folks
something to handle the QIC drives we don't know about. Correctly propagate
record of compression algorithm back. Clear FROZEN flag for EOM, REWIND
and OFFLINE (and RETENSION and ERASE) cases.
Fix an egregious bug in sadone that had left the device queue frozen
for deferred (for fixed mode case) errors.
Add comment in samount about how useless the test unit ready is for
invalidating a mount (this has to be fixed later).
Fix residual calculation (per Eivind) in saerror so that negative values
for tape records being too large for the supplied buffer get caught. Do
some other saerrro cleanup.
Per Ken && Justin, add my name to copyright comment.
entity. Add the Device Configuration page data structure- this structure
should be used if you fail to fetch the DATA COMPRESSION page. Make a union
type of a mode header, a device configuration page and the data compression
page.
Add a couple of QIC density defines (QIC 2G/QIC 4GB).
If the client requests that the error recovery code retry a selection
timeout, it will be retried after half a second. The delay is to give the
device time to recover.
For most of these drivers, I only added selection timeout retries where
they were also retrying unit attention type errors. The sa(4) driver calls
saerror() in a number of places, but most of them don't request retrying
unit attentions.
Also, bump the default minimum CD changer timeout from 2 to 5 seconds and
the maximum timeout from 10 to 15 seconds. Some Pioneer changers seem to
have trouble with the shorter timeout.
Reviewed by: gibbs
NOTE: These changes will require recompilation of any userland
applications, like cdrecord, xmcd, etc., that use the CAM passthrough
interface. A make world is recommended.
camcontrol.[c8]:
- We now support two new commands, "tags" and "negotiate".
- The tags commands allows users to view the number of tagged
openings for a device as well as a number of other related
parameters, and it allows users to set tagged openings for
a device.
- The negotiate command allows users to enable and disable
disconnection and tagged queueing, set sync rates, offsets
and bus width. Note that not all of those features are
available for all controllers. Only the adv, ahc, and ncr
drivers fully support all of the features at this point.
Some cards do not allow the setting of sync rates, offsets and
the like, and some of the drivers don't have any facilities to
do so. Some drivers, like the adw driver, only support enabling
or disabling sync negotiation, but do not support setting sync
rates.
- new description in the camcontrol man page of how to format a disk
- cleanup of the camcontrol inquiry command
- add support in the 'devlist' command for skipping unconfigured devices if
-v was not specified on the command line.
- make use of the new base_transfer_speed in the path inquiry CCB.
- fix CCB bzero cases
cam_xpt.c, cam_sim.[ch], cam_ccb.h:
- new flags on many CCB function codes to designate whether they're
non-immediate, use a user-supplied CCB, and can only be passed from
userland programs via the xpt device. Use these flags in the transport
layer and pass driver to categorize CCBs.
- new flag in the transport layer device matching code for device nodes
that indicates whether a device is unconfigured
- bump the CAM version from 0x10 to 0x11
- Change the CAM ioctls to use the version as their group code, so we can
force users to recompile code even when the CCB size doesn't change.
- add + fill in a new value in the path inquiry CCB, base_transfer_speed.
Remove a corresponding field from the cam_sim structure, and add code to
every SIM to set this field to the proper value.
- Fix the set transfer settings code in the transport layer.
scsi_cd.c:
- make some variables volatile instead of just casting them in various
places
- fix a race condition in the changer code
- attach unless we get a "logical unit not supported" error. This should
fix all of the cases where people have devices that return weird errors
when they don't have media in the drive.
scsi_da.c:
- attach unless we get a "logical unit not supported" error
scsi_pass.c:
- for immediate CCBs, just malloc a CCB to send the user request in. This
gets rid of the 'held' count problem in camcontrol tags.
scsi_pass.h:
- change the CAM ioctls to use the CAM version as their group code.
adv driver:
- Allow changing the sync rate and offset separately.
adw driver
- Allow changing the sync rate and offset separately.
aha driver:
- Don't return CAM_REQ_CMP for SET_TRAN_SETTINGS CCBs.
ahc driver:
- Allow setting offset and sync rate separately
bt driver:
- Don't return CAM_REQ_CMP for SET_TRAN_SETTINGS CCBs.
NCR driver:
- Fix the ultra/ultra 2 negotiation bug
- allow setting both the sync rate and offset separately
Other HBA drivers:
- Put code in to set the base_transfer_speed field for
XPT_GET_TRAN_SETTINGS CCBs.
Reviewed by: gibbs, mjacob (isp), imp (aha)
emulator so that instances can be dynamically added and removed from the
system.
Properly reference count peripheral instances so they are cleaned up when
destroyed by the control device.
Set a timeout for test unit ready commands. Before it was uninitialized
and could cause us to drop off the bus when no real timeout had occurred.
catch a T4000s)
+ Set *some* kind of error at EOM if we're in fixed mode and have pending errs.
Do not clear the ERR_PENDING bit if more buffers are queued.
+ Release the start_ccb in this case also, else we hang forever on rewinding.
+ Any kind of error for load to BOT in samount should then cause an attempt
to use REWIND to come back to BOT. Do the initial load command quietly.
+ In samount, if we succeed, set the relative position markers.
peripheral drivers can determine where in the devstat(9) list they are
inserted.
This requires recompilation of libdevstat, systat, vmstat, rpc.rstatd, and
any ports that depend on the devstat code, since the size of the devstat
structure has changed. The devstat version number has been incremented as
well to reflect the change.
This sorts devices in the devstat list in "more interesting" to "less
interesting" order. So, for instance, da devices are now more important
than floppy drives, and so will appear before floppy drives in the default
output from systat, iostat, vmstat, etc.
The order of devices is, for now, kept in a central table in devicestat.h.
If individual drivers were able to make a meaningful decision on what
priority they should be at attach time, we could consider splitting the
priority information out into the various drivers. For now, though, they
have no way of knowing that, so it's easier to put them in an easy to find
table.
Also, move the checkversion() call in vmstat(8) to a more logical place.
Thanks to Bruce and David O'Brien for suggestions, for reviewing this, and
for putting up with the long time it has taken me to commit it. Bruce did
object somewhat to the central priority table (he would rather the
priorities be distributed in each driver), so his objection is duly noted
here.
Reviewed by: bde, obrien
of the minor). Establish and use a control mode open. Control
mode opens may open the device without locking, but are prohibited
from all but some ioctls. MTIOCGET always works. MTIOCERRSTAT
works, but the clearing of latched error status is contingent
upon whether another application has the device open, in which
case an interruptible perip acquire is done. MTSETBSIZ, MTSETDNSTY
and MTCOMP also require a periph aquire.
Relative fileno and blkno are tracked. Note that just about any
error will make these undefined, and if you space to EOD or use
hardware block positioning, these are also lost until the next
UNLOAD or REWIND.
Driver state is also tracked and recorded in the unit softc
to be passed back in mt_dsreg for a MTIOCGET call.
Thanks to Dan Strick for suggesting this.
Reintroduce 2 filemarks at EOD for all but QIC devices. I
really think it's wrong, but there is a lot of 3rd party
software that depends upon this (not the least of which is
tcopy). Introduce a SA_QUIRK_1FM to ensure that some devices
can be marked as only being able to do 1 FM at EOD.
At samount time force a load to BOT if we aren't mounted. If the
LOAD command fails, use the REWIND command (e.g., for the IBM 3590
which for some gawdawful reason doesn't support the LOAD (to BOT)
command).
Also at samount time, if you don't know fixed or variable, try to
*set* to one of the known fixed (or variable, for special case)
density codes. We only have to do this once per boot, so it's not
that painful. This is another way to try and figure out the wierd
QIC devices without having to quirk everything in the universe.
A substantial amount of cleanup as to what operations can and what
operations cannot be retried. Don't retry space operations if they
fail- it'll just lead to lossage.
Not yet done is invalidating mounts correctly after errors. ENOTIME.
idiot about testing SA_QUIRK_2FM in samount. Fixed.
Removed the NORRLS quirk (to save quirk space) and left
the behaviour of being quiet about failed reserve/release
(failed due Illegal Request) the same.
Added a SF_QUIET_IR for prevent/allow for the same purposes.
(<blank@fox.uni-trier.de>) about quirks being set as
arithmetic values, not as bitfields. Add HP, Kennedy
and M4 1/2" reel quirk entries.
Do a lot of gratuitous source changing.
Audit all functions that build ccbs for the tape driver
and decide whether each one can be retried or not.
Still to do is some more state management post errors.
data and sense information for target mode devices for which no other
peripheral driver is attached. This simplifies the task of dealing with
luns that are not otherwise enabled for target mode if the controller
does not have firmware that automatically deals with this case (e.g.
the aic7xxx driver).
from the old driver. Change format of quirk table to have a preferred block
size for devices that need to be QUIRK_FIXED- this is loaded into the
last_media_blocksize tag at saregister time and will be used in the first
samount case.
Change sasetparams to take a sense_flags argument so that probe time testing
can be quieter (e.g. with SF_NO_PRINT).
Fix a couple of silly bugs in the fixed/variable determination in samount- one
was where there was a check against 'guessing' AND the density code being
default density- *SMACK* - you're only guessing if you find the media code
to be *other* than default density. Second bug was a test against current
blocksize being zero- should be a test against whether current blocksize
is not equal to the last blocksize if you had wanted to be fixed (suppose
you came up in fixed, but not the preferred size?). And if you don't
know what the fixed size should be, select 512 as the starting point,
not BLKDEV_IOSIZE (reality wins). Finally, in doing the test set to variable
mode, make sasetparams non-chatty.
to release the probe ccb before taking down the periph.
Also, don't do cdscheduling if you're not going to
attach the device after all.
Reviewed by: ken@freebsd.org
CAPACITY fail for a non-removable media device. There's a race
condition where the device entry is removed and then
xpt_release_ccb is called which attempts to give back the ccb
to a device that's now gone. In this bandaid release the ccb
early and then remember to not call xpt_release_ccb later.
will) get set for the devices that don't actually support
reserve/release (so we don't keep trying it).
Add softc storage and manage storing last I/O and CTL
commands that had errors (for correlative purposes).
In saclose clear the 'MOUNTED' bit if we either rewind or
unload (yes, this shouldn't be necessary since the next open
should catch whether a tape change occurred, but I'm having
some questions about that actually working so this is
safer for the moment). Oh, forgot to mention in previous
commit messages that some of the failures particularly at
close time cause the tape to be ejected (for the sake
of safety)- all this prior to redoing the state machine
(which is in progress) which will try and handle this better.
Complete the addition of the setmark support
(from Martin.Birgmeier@aon.at).
written even it the tape was opened readonly- 2 botches in deferred error
handling for FIXED LENGTH mode which caused panic && hand resp.). Fixed
a memory leak in sa_mount.
2) Fixed an annoying bug when turning of compression to actually reflect
this for future status calls.
3) Implement the MTIOCERRSTAT call where latched control and I/O residuals
and sense data are returned to the application asking for them.
Attempt to determine (at mount time if not done so already) via density code
whether a device should default to fixed mode or not. Attempts to set to
variable that fail will cause fixed to be selected.
Similarly, the '2 filemarks at EOM' quirk is now determined (or attempted to
be determined) via density code. Some as yet not entirely tested code for
coping with 2FM@EOD position is now also in place.
aborted prior to disabling our lun. This requires a second set of
links since we use the ones in the ccb_hdr during normal operations.
Nuke some unused variables.
level so they can be reclaimed before attempting to disable our lun.
Correctly free descriptors. Add periph locking and spl protection
around open and close.
incorporate some notion of which revision the device is. If it's < SCSI2, for
example, READ BLOCK LIMITS is not a MANDATORY command.
At any rate, the initial state is to try and read block limits to get a notion
of the smallest and largest record size as well as the granularity. However,
this doesn't mean that the device should actually *in* fixed block mode should
the max && min be equal... *That* choice is (for now) determined by whether
the device comes up with a blocksize of nonzero. If so, then it's a fixed block
preferred device, otherwise not (this will change again soon).
When actually doing I/O, and you're in fixed length mode, the block count is
*not* the byte count divided by the minimum block size- it's the byte count
divided by the current blocksize (or use shift/mask shortcuts if that worked
out...).
Then when you *change* the blocksize via an ioctl, make sure this actually
propagates to the stored notion of blocksize (and update the shift/mask
shortcuts).
Misc Other:
When doing a mode select, only use the SCSI_SAME_DENSITY (0x7f) code if
the device is >= SCSI2- otherwise just use the saved density code.
Recover from the ripple of ILLEGAL REQUEST not being 'retried' in that
RESERVE/RELEASE is not a mandatory command for < SCSI2 (so ignore it if it
fails).
Allow sync transfers if the controller supports it. Wide will follow
as soon as I get the kinks worked out of wide target transfers in the
aic7xxx driver (currently the only target mode driver in the tree).
for possible buffer overflow problems. Replaced most sprintf()'s
with snprintf(); for others cases, added terminating NUL bytes where
appropriate, replaced constants like "16" with sizeof(), etc.
These changes include several bug fixes, but most changes are for
maintainability's sake. Any instance where it wasn't "immediately
obvious" that a buffer overflow could not occur was made safer.
Reviewed by: Bruce Evans <bde@zeta.org.au>
Reviewed by: Matthew Dillon <dillon@apollo.backplane.com>
Reviewed by: Mike Spengler <mks@networkcs.com>
not like the 6-byte read and write commands! It returns illegal request,
with the field pointer pointing to byte 9 of a 6 byte CDB.
In any case, the work around is to put in a quirk mechanism that makes sure
that we don't send 6-byte reads or writes to this device. It's rather sad
that this is necessary. You'd think that they would be able to get
something that basic to work right in their firmware...
Reviewed by: gibbs
Reported by: Adam McDougall <bsdx@spawnet.com>
other problem.
- Hold onto splsoftcam() in the peripheral driver open routines until we
have locked the periph. This eliminates a race condition.
- Disallow opening the pass driver when securelevel > 1.
- If a user tries to open the pass driver with O_NONBLOCK set, return
EINVAL instead of ENODEV. (noticed by gibbs)
to a device failed.
In theory, the same steps that happen when we get an AC_LOST_DEVICE async
notification should have been taken when a driver fails to attach. In
practice, that wasn't the case.
This only affected the da, cd and ch drivers, but the fix affects all
peripheral drivers.
There were several possible problems:
- In the da driver, we didn't remove the peripheral's softc from the da
driver's linked list of softcs. Once the peripheral and softc got
removed, we'd get a kernel panic the next time the timeout routine
called dasendorderedtag().
- In the da, cd and possibly ch drivers, we didn't remove the
peripheral's devstat structure from the devstat queue. Once the
peripheral and softc were removed, this could cause a panic if anyone
tried to access device statistics. (one component of the linked list
wouldn't exist anymore)
- In the cd driver, we didn't take the peripheral off the changer run
queue if it was scheduled to run. In practice, it's highly unlikely,
and maybe impossible that the peripheral would have been on the
changer run queue at that stage of the probe process.
The fix is:
- Add a new peripheral callback function (the "oninvalidate" function)
that is called the first time cam_periph_invalidate() is called for a
peripheral.
- Create new foooninvalidate() routines for each peripheral driver. This
routine is always called at splsoftcam(), and contains all the stuff
that used to be in the AC_LOST_DEVICE case of the async callback
handler.
- Move the devstat cleanup call to the destructor/cleanup routines, since
some of the drivers do I/O in their close routines.
- Make sure that when we're flushing the buffer queue, we traverse it at
splbio().
- Add a check for the invalid flag in the pt driver's open routine.
Reviewed by: gibbs
tested both in the kernel and in userland. Also, fix a couple of printf
warnings that show up when CAMDEBUG is defined.
Reviewed by: imp
Partially submitted by: imp
1) The vnode pager wasn't properly tracking the file size due to
"size" being page rounded in some cases and not in others.
This sometimes resulted in corrupted files. First noticed by
Terry Lambert.
Fixed by changing the "size" pager_alloc parameter to be a 64bit
byte value (as opposed to a 32bit page index) and changing the
pagers and their callers to deal with this properly.
2) Fixed a bogus type cast in round_page() and trunc_page() that
caused some 64bit offsets and sizes to be scrambled. Removing
the cast required adding casts at a few dozen callers.
There may be problems with other bogus casts in close-by
macros. A quick check seemed to indicate that those were okay,
however.
2217's (reported by Matthew Jacob in NetBSD PR kern/6027) and Fujitsu
M2954's (reported by Tom Jackson).
Some of the Fujitsus at least hang when they get a cache sync command.
(Others just return illegal request.)
Also, make error printing in dashutdown() a little more selective. Don't
print any error when the sense key is illegal request. Drives that don't
support the synchronize cache command usually return illegal request.
Also, make sure the scsi status is check condition before going into
scsi_sense_print().
Reviewed by: gibbs
command on drives that don't like it. Right now, there's just a bogus
quirk entry in the table that doesn't do anything, but that should be
changed once we get actual inquiry data for drives that don't like the
synchronize cache command.
Also, add a shutdown hook that runs through all direct access peripherals
and runs a synchronize cache on them if they're still open, and if
synchronize cache isn't disabled via a quirk entry.
Add a synchronize cache call at the end of dadump() (again, conditionalized
on the quirk entry), so we can insure that the disk cache contents get
flushed to physical media after a dump.
Check the new quirk entry in daclose() to decide whether or not to
synchronize the cache for a disk at final close.
Reviewed by: gibbs
JAZ drive happy. This shouldn't impact fast drives, and will keep cam
from failing on very slow ones (that are spinning up, say). 20
seconds was almost long enough, but not in all cases.
Suggested by: gibbs
well) Among them:
[ cd driver ]
1. Old labeling code was still there.
2. Error handling for dsopen() was broken (no test for the `error'
returned by dsopen(); bogus test of an `error' that is known to be 0).
3. cdopen() closed the physical device after certain errors although there
may still be open partitions on it.
4. cdclose() closed the physical device although there may still be open
partitions on it.
5. Some printf format fixes was incomplete or missing.
6. cdioctl() truncated unit numbers mod 256.
7. cdioctl() was missing locking.
[ da driver ]
1. daclose() closed the physical device although there may still be open
partitions on it. This was fixed many years ago in sd.c rev.1.57.
2. A minor optimization (the dk_slices != NULL test) in sdopen() became
uglier in daopen(). It is not worth doing. da only regressed compared
with od and my version of sd, since I never committed the change to sd.
daopen() should probably do less if some partition is already open.
This is not addressed by the diffs.
[ ... ]
5. "opt_hw_wdog.h" was not included, so the HW_WDOG code was unreachable.
- Added a getdev CCB call in the cdopen() and daopen() calls so that the
vendor name and device name are available for the disklabel. (suggested
by bde)
- Removed vestigal devfs support in both drivers, since we can't properly
work with devfs yet. (ask bde for details on this)
- Cleaned up the probe code in both drivers in the failure cases. There
were a number of things wrong here. The peripheral driver instances
weren't getting properly cleaned up. Sometimes the wrong probe message
would get printed out (with the failure message appended), so it wasn't
very clear that we failed to attach. SCSI sense information was printed,
even when the error in question wasn't a SCSI error. I put similar fixes
into the changer driver in revision 1.2 of scsi_ch.c.
Reviewed by: gibbs
Submitted by: bde (partially)
print out a one line description/dump of every SCSI CDB sent to a
particular debugging target or targets.
This is a good bit more useful than the other debugging modes, I think.
Change some things in LINT to note the availability of this new option.
Fix an erroneous argument to scsi_cdb_string() in scsi_all.c
Reviewed by: gibbs
block descriptors enabled on mode sense commands.
Basically, we try sending a mode sense with block descriptors disabled (the
previous default), and if it fails, we try sending the mode sense with
block descriptors enabled. If that works, we note that in a runtime quirk
entry, so we don't bother disabling block descriptors again for the device.
This problem was first reported by Chris Jones <cjones@honors.montana.edu>
on one of the NetBSD lists, but I'd imagine that some FreeBSD users would
have run into it eventually as well, since our changer driver is derived
form the NetBSD changer driver.
Also, change some of the probe logic so that we do the right thing in the
case of a failure to attach.
Fix a memory leak in chgetparams().
Add a couple of inline helper functions to scsi_all.h to correctly return
the start of a mode page.
NetBSD PR: kern/6214
Reviewed by: gibbs
timeouts in the SA driver (timeouts for space, rewind and erase). Folks
can lengthen the timeouts if their hardware is especially slow, or shorten
them if they want to be notified of errors a little sooner.
Also, get rid of two OD driver options. The od driver has been made
obsolete by the da driver.
Reviewed by: ken, gibbs
Submitted by: Dag-Erling Coidan Smørgrav <des@FreeBSD.ORG>
already allowed medium not present type errors (0x3a), but some Philips and
HP WORM drives return 0x04,0x00 when you issue a read capacity without
media in the drive.
flags on some of the operations in the driver weren't quite right. Also,
clean up scsi_cd.h, change u_char to u_int8_t.
I'm surprised this problem didn't show up sooner. (the code has been in
there almost a year and a half)
PR: 7996
Reviewed by: ken
Submitted (mostly) by: gibbs
a perfect world, we'd notice the UA and do some device validation to ensure
that the device hasn't changed. We may get this before the year ends,
but not before 3.0R. This change gives the adminstrator ample ammunition
to take off a foot or two, but hey this *is* UN*X.
wasn't getting sent back for most errors, even if there were retries left
on the command. I'm not sure how I ever let this slip by before...
In any case, we now send back ERESTART if there are retries left for the
command, and send back the default error code when there are no retries
left.
Reviewed by: gibbs
without the DA driver.
The problem was that the CD driver depended on scsi_read_write() and
scsi_start_stop(), which were defined in scsi_da.c.
I moved both functions, and their associated data structures and defines
from scsi_da.* to scsi_all.*. This is technically the "wrong" thing to do
since those commands are really only for direct-access type devices, not
for all SCSI devices. I think, though, that the advantage (allowing people
to compile kernels without the disk driver) outweighs any architectural
purity arguments.
PR: kern/7969
Reviewed by: gibbs
only. Previously, if the device was chmoded 644, someone could open it
with the O_RDONLY flag and issue any ioctl to the device.
Reviewed by: imp, gibbs
