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History log of /src/sys/dev/scsipi/scsipiconf.c
RevisionDateAuthorComments
 1.45  28-Mar-2019  kardel Add reading of supported opcodes and their timeouts
at attachment time. Though this information is optional,
it allows to override our fixed timeouts with device
provided timeouts. These timeouts will override the
hardcoded values if the device provided timeouts
exceed the hardcoded values and are less than a day.

Using the device provided timeouts avoids premature
device resets and unreliable operation due to
inadequate timeouts.

Due to the limited implementations of USB
umass devices this feature is disabled for all
umass attached devices.
 1.44  11-Apr-2017  christos branches: 1.44.12;
Put back module_autoload code; the module_autoload code now checks that
root is mounted.
 1.43  10-Apr-2017  jdolecek just do not autoload scsiverbose module, it causes deadlock if it happens
while root fs is being mounted

adresses second part of PR kern/52147 by Michael van Elst, thank you
 1.42  20-Nov-2016  mlelstv branches: 1.42.2;
Make scsipi framework MPSAFE.

Data structures are now protected by a per-adapter mutex at IPL_BIO
that is created by the scsibus or atapibus instance when the adapter
is configured.
The enable reference counter and the channel freeze counter which are
currently used by HBA code before the adapter is configured, are made
atomic.
The target drivers are now all tagged as D_MPSAFE.

Almost all HBA drivers still require the kernel lock to present,
so all callbacks into HBA code are still protected by kernel lock
unless the driver is tagged as SCSIPI_ADAPT_MPSAFE.

TODO: refactor sd and cd to use dksubr.
 1.41  02-May-2016  christos branches: 1.41.2;
move scsipi_strvis -> libkern:strnvisx()
change the prototype to match userland
fix sizes of strings passed to it
 1.40  21-Aug-2010  pgoyette branches: 1.40.18; 1.40.36;
Update the various xxx_verbose modules to conform to the module subsystem's
new locking protocol.
 1.39  25-Jul-2010  pgoyette Move setting of scsi_verbose_loaded flag into the module's init routine.
This ensures that the flag is set even if the module was manually loaded
by the user rather than just auto-loaded.
 1.38  07-Jun-2010  pgoyette Update scsiverbose module to use module_autoload() rather than module_load().
Load the module right before each attempt to use its features, and let the
module subsystem handle unloading.
 1.37  30-May-2010  pgoyette Extract SCSIVERBOSE into a kernel module. The module can be builtin
by defining 'options SCSIVERBOSE' in the kernel config file (no change
from current behavior), or it can be loaded at boot time on those
architectures that support the boot loader's "load" command.

The module is built for all architectures, whether or not SCSI or
atapi support exists.
 1.36  28-Apr-2008  martin branches: 1.36.20; 1.36.22;
Remove clause 3 and 4 from TNF licenses
 1.35  09-Jul-2007  ad branches: 1.35.28; 1.35.30; 1.35.32;
Merge some of the less invasive changes from the vmlocking branch:

- kthread, callout, devsw API changes
- select()/poll() improvements
- miscellaneous MT safety improvements
 1.34  11-Dec-2005  christos branches: 1.34.30; 1.34.32;
merge ktrace-lwp.
 1.33  30-May-2005  christos branches: 1.33.2;
- remove bogus casts
- add more const
 1.32  29-May-2005  christos - Sprinkle const
- Avoid variable shadowing.
- Eliminate some caddr_t abuse.
 1.31  27-Feb-2005  perry nuke trailing whitespace
 1.30  01-Feb-2005  reinoud Backing out changes to clean up scsipi. I was pointed out there were
problems i hadn't seen. To prevent lossage i'd decided to back off all
changes and let them be reviewed on tech-kern.
 1.29  31-Jan-2005  reinoud Part of the cleanup of sys/scsipi's use of types; rename all u_int* to
uint* and change the u_long's to uint32_t's where possible. Note that the
iocl definitions/hooks have to be ulong (or u_long) or they'll bomb out.
 1.28  31-Jan-2005  reinoud As part of cleaning up sys/scsipi, replace all u_char by uint8_t and
replace all `short' with int16_t.
 1.27  18-Sep-2004  mycroft branches: 1.27.4; 1.27.6;
Minor rearrangement. Whitespace and #include cleanup.
 1.26  17-Sep-2004  mycroft Remove the "xfer" argument to scsipi_command().
 1.25  17-Sep-2004  mycroft Change the way bustype_cmd is used. Rather than having it be responsible for
calling scsipi_make_xs() and scsipi_execute_xs(), instead push these into
scsipi_command. Make bustype_cmd and PHOLD/PRELE be called from
scsipi_execute_xs(). This allows us to create a xfer structure -- possibly on
the stack -- and call scsipi_execute_xs() directly.
 1.24  09-Sep-2004  bouyer Make the xxstart() functions reentrant again, as some drivers HBA can call
scsipi_done() from their scsipi_request().
For this, add a struct scsipi_xfer * argument to scsipi_command().
If not NULL scsipi_command() will use this to enqueue this xfer, otherwise
it'll try to allocate a new one. This scsipi_xfer has to be allocated
and initialised by scsipi_make_xs() or equivalent.
In xxstart(), allocate a scsipi_xfer using scsipi_make_xs(), and if not NULL,
dequeue the buffer before calling scsipi_command(). This makes sure that
scsipi_command() will not fail, and also makes sure that xxstart() won't
be called again between the BUFQ_PEEK() and BUFQ_GET().

Fix "dequeued wrong buf" panics reported by Juergen Hannken-Illjes in
private mail and Andreas Wrede on current-users@.
Thanks to Jason Thorpe and Chuck Silver for review, and Andreas Wrede for
testing the patch.
 1.23  21-Aug-2004  thorpej Oops, missed one in last.
 1.22  21-Aug-2004  thorpej Const poison scsipi_dtype().
 1.21  21-Aug-2004  thorpej Use ANSI function decls and make use of static.
 1.20  18-Jan-2003  martin branches: 1.20.2; 1.20.4;
Merge botch.
 1.19  09-Nov-2002  thorpej Fix signed/unsigned comparison warnings.
 1.18  04-Oct-2002  soren Slightly simplicy the SCSI device attachment message:
- Use the plain words 'disk' and 'tape' instead of 'direct' and 'sequential'.
- Media status will be printed in the frontend, so don't bother with it.
- Don't bother printing the SCSI version, which is fixed these days, or the
numberic device type.
 1.17  12-Jan-2002  tsutsui Call malloc(9) with M_ZERO flag instead of memset() after malloc().
 1.16  15-Nov-2001  lukem don't need <sys/types.h> when including <sys/param.h>
 1.15  13-Nov-2001  lukem add RCSIDs
 1.14  18-Jul-2001  thorpej bcmp -> memcmp
 1.13  25-Apr-2001  bouyer branches: 1.13.2;
Pull up the thorpej_scsipi branch to main branch.
This is a completely rewritten scsipi_xfer execution engine, and the
associated changes to HBA drivers. Overview of changes & features:
- All xfers are queued in the mid-layer, rather than doing so in an
ad-hoc fashion in individual adapter drivers.
- Adapter/channel resource management in the mid-layer, avoids even trying
to start running an xfer if the adapter/channel doesn't have the resources.
- Better communication between the mid-layer and the adapters.
- Asynchronous event notification mechanism from adapter to mid-layer and
peripherals.
- Better peripheral queue management: freeze/thaw, sorted requeueing during
recovery, etc.
- Clean separation of peripherals, adapters, and adapter channels (no more
scsipi_link).
- Kernel thread for each scsipi_channel makes error recovery much easier
(no more dealing with interrupt context when recovering from an error).
- Mid-layer support for tagged queueing: commands can have the tag type
set explicitly, tag IDs are allocated in the mid-layer (thus eliminating
the need to use buggy tag ID allocation schemes in many adapter drivers).
- support for QUEUE FULL and CHECK CONDITION status in mid-layer; the command
will be requeued, or a REQUEST SENSE will be sent as appropriate.

Just before the merge syssrc has been tagged with thorpej_scsipi_beforemerge
 1.12  31-Dec-2000  ad branches: 1.12.2;
PR 6402: some SCSI devices use \377 as blank, so adjust scsipi_strvis().
 1.11  28-Jun-2000  mrg <vm/vm.h> -> <uvm/uvm_extern.h>
 1.10  09-Jun-2000  enami Prevent a process being swapped out during I/O if the data buffer is
allocated on stack. This potential problem is noticed by Noriyuki Soda
and the idea and sample code to fix is given by Jason R. Thorpe.
 1.9  15-May-2000  dante branches: 1.9.2;
Add few peripheral device type
Remove "???" from T_IT8_1/2. They actually are pre-press devices for graphic arts as described by ASC IT8
Zeros and blanks scsipi_inquiry_data from byte 58 to byte 74 if additional_length is less than 58
 1.8  17-Nov-1998  bouyer branches: 1.8.10;
Rename scsi_interpret_sense() to scsipi_interpret_sense() and move it from
scsi_base.c to scsipi_base.c. Rename the functions from scsi_verbose.c
too, and rename the file itself. Cleaup includes too (scsi_*.h should not
be #included in scsipi_*.h files, which are supposed to be
common to atapi and scsi).
 1.7  17-Aug-1998  mycroft Assign my copyrights to TNF.
 1.6  15-Aug-1998  mycroft Make copyright notices with my name consistent.
 1.5  05-Aug-1998  drochner Improve generation of default disklabels:
-store printable product ID in cd's and sd's softc, use it as "typename"
-for this, add a "destination buffer length" argument to scsipi_strvis()
-return ATAPI device type for ATAPI devices
 1.4  03-Oct-1997  thorpej Clean up and comment the device types, and add the "enclosure services",
"storage array", and "IT8" types.
 1.3  01-Oct-1997  enami Cosmetic changes to keep coding style consistency in this directory;

- Indent with tab of width 8.
- Use four column to indent continuation line.
- Fold long line if possible.
- Use return (xx) instead of return xx.
- Compare pointer against NULL instead of testing like boolean.
- Delete whitespace at the end of line.
- Delete whitespace in front of function call operator.
- Delete whitespace after cast.
- Dereference a pointer to function explicitly.
- Add an empty line after local variable declaration.
- Use NULL instead of (char *)0.
- Dont use block for single statement.
 1.2  27-Aug-1997  bouyer branches: 1.2.2;
Merge scsipi branch in the mainline. This add support for ATAPI devices
(currently only CD-ROM drives on i386). The sys/dev/scsipi system provides 2
busses to which devices can attach (scsibus and atapibus). This needed to
change some include files and structure names in the low level scsi drivers.
 1.1  01-Jul-1997  bouyer branches: 1.1.2;
file scsipiconf.c was initially added on branch bouyer-scsipi.
 1.1.2.1  01-Jul-1997  bouyer New merged scsi/atapi code. Tested on i386 and sparc. Commiting to a branch
for now, so that it can be tested on other ports too.
The config sheme is as follow:
New merged scsi/atapi code. Tested on i386 and sparc. Commiting to a branch
for now, so that it can be tested on other ports too.
The config sheme is as follow:
scsibus at aha
sd at scsibus
cd at scsibus
atapibus at wdc
cd at atapibus
cd has bus-specific config and function front-end in scsicd.c and atapicd.c
The call to theses functions from cd.c is conditionned to
NSCSICD and NATAPICD (all defined in cd.h by config).
 1.2.2.3  14-Oct-1997  thorpej Update marc-pcmcia branch from trunk.
 1.2.2.2  27-Aug-1997  thorpej Update marc-pcmcia branch from trunk.
 1.2.2.1  27-Aug-1997  thorpej file scsipiconf.c was added on branch marc-pcmcia on 1997-08-27 23:33:29 +0000
 1.8.10.4  05-Jan-2001  bouyer Sync with HEAD
 1.8.10.3  20-Nov-2000  bouyer Update thorpej_scsipi to -current as of a month ago
A i386 GENERIC kernel compiles without the siop, ahc and bha drivers
(will be updated later). i386 IDE/ATAPI and ncr work, as well as
sparc/esp_sbus. alpha should work as well (untested yet).
siop, ahc and bha will be updated once I've updated the branch to current
-current, as well as machine-dependant code.

Main changes to the scsipi code itself:
- add a scsipi_channel->type to allow umass to attach to both atapibus and
scsibus. Will die when IDE is converted from ata_atapi_attach to
scsipi_channel/scsipi_adapter
- Add a chan_defquirks to scsipi_channel so that adapters can pass a default
set of quirks to be set for each device attached
- add adapt_getgeom and adapt_accesschk callbacks
 1.8.10.2  01-Nov-1999  thorpej Fixup the SC_DEBUG() stuff for the new world order.
 1.8.10.1  19-Oct-1999  thorpej Completely rewritten scsipi_xfer execution engine:
- All xfers are queued in the mid-layer, rather than doing so in an
ad-hoc fashion in individual adapter drivers.
- Adapter/channel resource management in the mid-layer, avoids even trying
to start running an xfer if the adapter/channel doesn't have the resources.
- Better communication between the mid-layer and the adapters.
- Asynchronous event notification mechanism from adapter to mid-layer and
peripherals.
- Better peripheral queue management: freeze/thaw, sorted requeueing during
recovery, etc.
- Clean separation of peripherals, adapters, and adapter channels (no more
scsipi_link).
- Kernel thread for each scsipi_channel makes error recovery much easier
(no more dealing with interrupt context when recovering from an error).
- Mid-layer support for tagged queueing: commands can have the tag type
set explicitly, tag IDs are allocated in the mid-layer (thus eliminating
the need to use buggy tag ID allocation schemes in many adapter drivers).

There is a lot more work to do, but this correctly functions for the most
part on several file servers I run.
 1.9.2.1  22-Jun-2000  minoura Sync w/ netbsd-1-5-base.
 1.12.2.10  11-Nov-2002  nathanw Catch up to -current
 1.12.2.9  18-Oct-2002  nathanw Catch up to -current.
 1.12.2.8  12-Jul-2002  nathanw No longer need to pull in lwp.h; proc.h pulls it in for us.
 1.12.2.7  24-Jun-2002  nathanw Curproc->curlwp renaming.

Change uses of "curproc->l_proc" back to "curproc", which is more like the
original use. Bare uses of "curproc" are now "curlwp".

"curproc" is now #defined in proc.h as ((curlwp) ? (curlwp)->l_proc) : NULL)
so that it is always safe to reference curproc (*de*referencing curproc
is another story, but that's always been true).
 1.12.2.6  28-Feb-2002  nathanw Catch up to -current.
 1.12.2.5  08-Jan-2002  nathanw Catch up to -current.
 1.12.2.4  14-Nov-2001  nathanw Catch up to -current.
 1.12.2.3  24-Aug-2001  nathanw Catch up with -current.
 1.12.2.2  21-Jun-2001  nathanw Catch up to -current.
 1.12.2.1  05-Mar-2001  nathanw Initial commit of scheduler activations and lightweight process support.
 1.13.2.3  11-Feb-2002  jdolecek Sync w/ -current.
 1.13.2.2  10-Jan-2002  thorpej Sync kqueue branch with -current.
 1.13.2.1  03-Aug-2001  lukem update to -current
 1.20.4.1  11-Sep-2004  he Pull up revision 1.24 (via patch, requested by bouyer in ticket #837):
Improve handling of memory shortage, to fix problems like:
sd3(mpt0:0:1:0): unable to allocate scsipi_xfer
sd3: not queued, error 12
The theory is that other consumers of pool memory is causing
this memory shortage in certain somewhat hard to reproduce
situations.
This is done by giving scsipi_command an extra argument to
optionally pass a preallocated scsipi_xfer, and allocating a
scsipi_xfer before dequeueing a buffer in the various *start()
functions. If the allocation of a scsipi_xfer fails, schedule
a callout for delayed invocation of the start function. Also
reserve one page for scsipi_xfer structs, to ensure that we will
eventually have some available once pending commands complete.
Should fix PR#25670.
 1.20.2.5  10-Nov-2005  skrll Sync with HEAD. Here we go again...
 1.20.2.4  04-Mar-2005  skrll Sync with HEAD.

Hi Perry!
 1.20.2.3  21-Sep-2004  skrll Fix the sync with head I botched.
 1.20.2.2  18-Sep-2004  skrll Sync with HEAD.
 1.20.2.1  25-Aug-2004  skrll Sync with HEAD.
 1.27.6.1  19-Mar-2005  yamt sync with head. xen and whitespace. xen part is not finished.
 1.27.4.1  29-Apr-2005  kent sync with -current
 1.33.2.1  03-Sep-2007  yamt sync with head.
 1.34.32.1  11-Jul-2007  mjf Sync with head.
 1.34.30.1  01-Jul-2007  ad Adapt to callout API change.
 1.35.32.3  09-Oct-2010  yamt sync with head
 1.35.32.2  11-Aug-2010  yamt sync with head.
 1.35.32.1  16-May-2008  yamt sync with head.
 1.35.30.1  18-May-2008  yamt sync with head.
 1.35.28.1  02-Jun-2008  mjf Sync with HEAD.
 1.36.22.2  05-Mar-2011  rmind sync with head
 1.36.22.1  03-Jul-2010  rmind sync with head
 1.36.20.2  22-Oct-2010  uebayasi Sync with HEAD (-D20101022).
 1.36.20.1  17-Aug-2010  uebayasi Sync with HEAD.
 1.40.36.2  05-Dec-2016  skrll Sync with HEAD
 1.40.36.1  29-May-2016  skrll Sync with HEAD
 1.40.18.1  03-Dec-2017  jdolecek update from HEAD
 1.41.2.2  26-Apr-2017  pgoyette Sync with HEAD
 1.41.2.1  07-Jan-2017  pgoyette Sync with HEAD. (Note that most of these changes are simply $NetBSD$
tag issues.)
 1.42.2.1  21-Apr-2017  bouyer Sync with HEAD
 1.44.12.1  10-Jun-2019  christos Sync with HEAD

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