Commit Graph

43 Commits

Author SHA1 Message Date
enami 5a4b9fcbbf 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.
2000-06-09 08:54:19 +00:00
mjacob 182c6629c1 oops, bad patch 2000-01-04 22:47:12 +00:00
mjacob c763ef5b5d - If the user application issues an INITIALIZE ELEMENT STATUS which
succeeds, note that we now are valid.

- Don't attempt to try and run initialize element status from interrupt level-
  we don't really support that yet. Also, key more correctly off of ASC/ASCQ
  instead of just the sense key.

- Make the practice of doing an INITIALIZE ELEMENT STATUS automatically when
  we get params (from chopen time even) a policy decision that is not the
  default for now- this can be a dangerous practice as well as time consuming.
  It's dangerous in that you can have a hung open when all you really want
  to do is do a read of parameters- and parameters, including slot status,
  are perfectly fine to read even before an INITIALIZE ELEMENT STATUS is
  done- all the elements whos status your read are going to be marked with
  an exception- so leave it up to the application to decide how important
  this is.
2000-01-04 22:35:57 +00:00
thorpej 16a9d90e17 Cleanup the scsipi_xfer flags:
- `flags' is now gone, replaced with `xs_control' and `xs_status'.
- Massive cleanup of the control flags.  Now we explicitly say that
  a job is to complete asynchronously, rather than relying on side-effects,
  and use a new flag to now that device discovery is being performed.
- Do SCSI device discovery interrupt-driven.
1999-09-30 22:57:52 +00:00
thorpej d622281820 Rework the changer driver a bit:
- Take note of magazine changes, and enqueue "Element Status Changed" events
  that user processes can read or select on.
- Normalize some structure names.
- Report back more status about changer elements:
  * Volume tags (e.g. barcode labels on the backs of your tapes)
  * External device names (for drive units in a changer)
  * Last element a unit of media was moved from
  * Sense information for SCSI changer elements in EXCEPT condition
  * Vendor-specific data if the user requests it.
- Add support for setting volume tags.
1999-09-09 23:24:11 +00:00
bouyer bf88fc82eb Adjust timeout for 'ielem' to match the comment: 5 mn (not 5s) per element +
10mn initial.
1999-04-04 12:20:48 +00:00
gibbs c9eb836a6a Return ENODEV when the device capability check fails for MOVE and EXCHANGE
operations.
1998-12-17 22:28:07 +00:00
thorpej 624619a881 When closing, wait for pending xfers to drain before deleting the reference
to the adapter.
1998-12-08 00:19:27 +00:00
thorpej 6a60e078ee Add adapter reference counting for SCSI and ATAPI devices. 1998-11-20 00:35:39 +00:00
cgd d58173741d kill the last remnants of __BROKEN_INDIRECT_CONFIG. (only the pica port
used it, and it's non-working and apparently slated for replacement.)
1998-08-31 22:28:04 +00:00
mjacob f4918cb223 kern/5514: take the submitter's advice, at least partially. The time it
takes to do IELEM can be proportional to the number of elements, but is
also affected by wierd things like how readable the barcodes on the
media are. There are worst case scenarios I've seen where there are
white labels on the back of tapes with pencilled in labels which is
*just* close enough to being a bar code that an Exabyte 120 would
peer at them myopically and long enough for a *really* long time to
pass in inventorying the jukebox.

I've upped the limit to be proportional to 5 minutes per element. That
is long enough that someone I'm sure will complain about "you wait
to long and should time out" for broken h/w.

As is also noted in the PR, there are a lot of other issues here. It's
really also a question as to whether to update this driver or go
with CAM's driver. This one doesn't have switching between block
descriptors and not, doesn't support volume tag setting, and so on.
Time is limited. This PR should have been closed and fixed right away,
tho.
1998-07-03 19:11:25 +00:00
thorpej 93f26b5f40 Adjust for changes to config. 1998-01-12 09:49:10 +00:00
thorpej 75e554c27d Implement two macros, scsipi_command() and scsipi_command_direct(), and
use them to hide the structure of the function pointers we jump through
to issue a command.
1997-10-18 19:50:51 +00:00
thorpej c557d7e759 Add missing SCSI_DATA_IN when issuing a READ_ELEMENT_STATUS command.
Noticed by Dave Huang <khym@bga.com>.
1997-10-01 05:39:56 +00:00
enami d7d845c3d2 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.
1997-10-01 01:18:38 +00:00
mjacob 9f482818bc Add 'initialize element status' command; note (for future fixing in ch.c)
that a number of jukeboxes can't cope with DBD (disable block descriptors)-
we'll have to fix that some day.
1997-09-29 17:32:23 +00:00
bouyer 6f3bab1f59 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.
1997-08-27 11:22:52 +00:00
thorpej 850b75414f - Tidy up some printf code in chattach().
- Implement a simple quirks framework for changers.
- Add a quirk for the Spectra 9000 8mm tape library; it requires a
  slightly-longer-than-1-minute delay to take tape inventory.  Many
  thanks to David Webster at Cygnus Solutions for testing this for me.
1997-02-21 22:06:52 +00:00
cgd ea0c7b4423 update these so they compile whether or not __BROKEN_INDIRECT_CONFIG
is defined.
1996-12-05 01:06:39 +00:00
christos 9a2c8cf28c revert previous kprintf change 1996-10-12 23:23:13 +00:00
christos 9beb92aad7 printf -> kprintf, sprintf -> ksprintf 1996-10-10 23:32:59 +00:00
thorpej d3f587e135 For ioctl commands which may change the device's state, ensure that
the caller has the device open for writing.
1996-09-18 02:34:31 +00:00
christos 3c0096ff79 gcc -Wall delinting: unused variables, assignments inside if's and missing
arguments in printf statements.
1996-04-19 00:02:29 +00:00
thorpej 52fee18c6f New SCSI media changer driver, written from scratch by me. Some
influence from the old driver (written by Stefan Grefen) and from
an autochanger driver written by the Systems Programming Group at the
University of Utah Computer Science Department (currently residing
in src/sys/arch/hp300/dev/ac.c).
1996-04-03 00:25:21 +00:00
christos beec8ba94c Eliminate scsi_conf.h. 1996-03-30 21:44:50 +00:00
mycroft e819063285 Define a full set of [234][bl]tol() and lto[234][bl]() conversion functions,
inlined.
Use sized types in protocol structures.
Make the definition of scsi_sense_data less ugly.
1996-03-19 03:05:15 +00:00
thorpej 532e997971 New device attachment scheme:
- split softc size and match/attach out from cfdriver into
	  a new struct cfattach.

	- new "attach" directive for files.*.  May specify the name of
	  the cfattach structure, so that devices may be easily attached
	  to parents with different autoconfiguration semantics.
1996-03-17 00:57:14 +00:00
thorpej a8573feb51 Normalize SCSI autoconfiguration output.
From Chris Demetriou <cgd@NetBSD.ORG>.  Fixes PR #1958.
1996-03-05 00:15:09 +00:00
christos 0bc63f486d scsi prototypes 1996-02-14 21:46:52 +00:00
mycroft e71e917e9d Remove unused macros. 1995-01-16 21:31:34 +00:00
mycroft 8fd135209c Numerous changes. Many bugs fixed, better autoconfig, a few new features. 1994-12-28 19:42:47 +00:00
mycroft 7a1dcbfac6 Clean up open and close routines somewhat. 1994-11-21 11:28:47 +00:00
mycroft fd32202948 Replace dev_unit with device_softc in scsi_link. Change argument to foostart()
to void*.
1994-11-21 10:39:09 +00:00
cgd 6ac2bbfc35 be more careful with types, also pull in headers where necessary. 1994-10-30 21:43:03 +00:00
mycroft e5d974c51f First cut at making user-level SCSI commands work. This is untested.
Partly from John Brezak.
1994-10-20 20:31:23 +00:00
cgd fccfa11af5 New RCS ID's, take two. they're more aesthecially pleasant, and use 'NetBSD' 1994-06-29 06:39:25 +00:00
mycroft 58dfc9dffc Fix various types. Remove some outdated flags. 1994-04-11 03:53:58 +00:00
mycroft 2e5a28159f New SCSI system, based on Julian's more recent work. 1994-03-29 04:29:20 +00:00
mycroft b4d3382694 Canonicalize all #includes. 1993-12-17 07:56:32 +00:00
mycroft 4862b84c92 Add RCS identifiers (this time on the correct side of the branch), and
incorporate recent changes in netbsd-0-9 branch.
1993-08-01 19:22:24 +00:00
cgd c59cd967ff add rcsids and clean up file headers 1993-05-20 03:46:09 +00:00
mycroft c2f7555fda Display more meaningful message on SCSI `unit attention'. 1993-04-20 10:51:51 +00:00
cgd e541169ce2 after 0.2.2 "stable" patches applied 1993-03-21 18:04:42 +00:00