History log of /freebsd/sys/cam/cam_periph.c (Results 151 – 175 of 412)
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# cfe30d02 19-Jun-2013 Gleb Smirnoff <glebius@FreeBSD.org>

Merge fresh head.


# 95fbded6 07-Jun-2013 Scott Long <scottl@FreeBSD.org>

Simplify the checking of flags for cam_periph_mapmem(). This gets rid of
a lot of code redundancy and grossness at very minor expense.

Reviewed by: smh
Obtained from: Netflix
MFC after: 3 days


Revision tags: release/8.4.0
# d38c0e53 27-Apr-2013 Alexander Motin <mav@FreeBSD.org>

MFprojects/camlock r249541:
Give periph validity flag own periph reference. That slightly simplifies
the release logic and covers hypothetical case if lock is dropped inside
the periph_oninval() met

MFprojects/camlock r249541:
Give periph validity flag own periph reference. That slightly simplifies
the release logic and covers hypothetical case if lock is dropped inside
the periph_oninval() method.

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# cccf4220 14-Apr-2013 Alexander Motin <mav@FreeBSD.org>

MFprojects/camlock r248890, r248897, r248898, r248900, r248903, r248905,
r248917, r248918, r248978, r249001, r249014, r249030:

Remove multilevel freezing mechanism, implemented to handle specifics o

MFprojects/camlock r248890, r248897, r248898, r248900, r248903, r248905,
r248917, r248918, r248978, r249001, r249014, r249030:

Remove multilevel freezing mechanism, implemented to handle specifics of
the ATA/SATA error recovery, when post-reset recovery commands should be
allocated when queues are already full of payload requests. Instead of
removing frozen CCBs with specified range of priorities from the queue
to provide free openings, use simple hack, allowing explicit CCBs over-
allocation for requests with priority higher (numerically lower) then
CAM_PRIORITY_OOB threshold.

Simplify CCB allocation logic by removing SIM-level allocation queue.
After that SIM-level queue manages only CCBs execution, while allocation
logic is localized within each single device.

Suggested by: gibbs

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# 69e6d7b7 12-Apr-2013 Simon J. Gerraty <sjg@FreeBSD.org>

sync from head


# dcdf6e74 04-Apr-2013 Alexander Motin <mav@FreeBSD.org>

MFprojects/camlock:
r249017:
Some cosmetic things:
- Unify device to target insertion inside xpt_alloc_device() instead of
duplicating it three times.
- Remove extra checks for empty lists of devic

MFprojects/camlock:
r249017:
Some cosmetic things:
- Unify device to target insertion inside xpt_alloc_device() instead of
duplicating it three times.
- Remove extra checks for empty lists of devices and targets on release
since zero refcount check also implies it.
- Reformat code to reduce indentation.

r249103:
- Add lock assertions to every point where reference counters are modified.
- When reference counters are reaching zero, add assertions that there are
no children items left.
- Add a bit more locking to the xptpdperiphtraverse().

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# 9e0d30e2 02-Apr-2013 Edward Tomasz Napierala <trasz@FreeBSD.org>

Fix panic in the error path caused by recursive acquisition of XPT topology
lock.

Reviewed by: ken


# e81ff91e 19-Mar-2013 Konstantin Belousov <kib@FreeBSD.org>

Do not remap usermode pages into KVA for physio.

Sponsored by: The FreeBSD Foundation
Tested by: pho


# b4862faf 19-Mar-2013 Konstantin Belousov <kib@FreeBSD.org>

Assert that a ccb passed to cam_periph_mapmem() for XPT_SCSI_IO and
XPT_ATA_IO holds virtual buffer address.

Sponsored by: The FreeBSD Foundation
Tested by: pho


# d241a0e6 26-Feb-2013 Xin LI <delphij@FreeBSD.org>

IFC @247348.


# d9a44755 08-Feb-2013 David E. O'Brien <obrien@FreeBSD.org>

Sync with HEAD.


# 46b1c55d 04-Jan-2013 Neel Natu <neel@FreeBSD.org>

IFC @ r244983.


# 33a38f74 08-Dec-2012 Kenneth D. Merry <ken@FreeBSD.org>

Fix a panic during CAM EDT traversal.

The problem was a race condition between the EDT traversal used by
things like 'camcontrol devlist', and CAM peripheral driver
removal.

The EDT traversal code

Fix a panic during CAM EDT traversal.

The problem was a race condition between the EDT traversal used by
things like 'camcontrol devlist', and CAM peripheral driver
removal.

The EDT traversal code holds the CAM topology lock, and wants
to show devices that have been invalidated. It acquires a
reference to the peripheral to make sure the peripheral it is
examining doesn't go away.

However, because the peripheral removal code in camperiphfree()
drops the CAM topology lock to call the peripheral's destructor
routine, we can run into a situation where the EDT traversal
increments the peripheral reference count after free process is
already in progress. At that point, the reference count is
ignored, because it was 0 when we started the process.

Fix this race by setting a flag, CAM_PERIPH_FREE, that I previously
added and checked in xptperiphtraverse() and xptpdperiphtravsere(),
but failed to use. If the EDT traversal code sees that flag,
it will know that the peripheral free process has already started,
and that it should not access that peripheral.

Also, fix an inconsistency in the locking between
xptpdperiphtraverse() and xptperiphtraverse(). They now both
hold the CAM topology lock while calling the peripheral traversal
function.

cam_xpt.c: Change xptperiphtraverse() to hold the CAM topology
lock across calls to the traversal function.

Take out the comment in xptpdperiphtraverse() that
referenced the locking inconsistency.

cam_periph.c: Set the CAM_PERIPH_FREE flag when we are in the
process of freeing a peripheral driver.

Sponsored by: Spectra Logic Corporation
MFC after: 1 week

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Revision tags: release/9.1.0
# 300675f6 27-Nov-2012 Alexander Motin <mav@FreeBSD.org>

MFC


# e477abf7 27-Nov-2012 Alexander Motin <mav@FreeBSD.org>

MFC @ r241285


# a10c6f55 11-Nov-2012 Neel Natu <neel@FreeBSD.org>

IFC @ r242684


# 23090366 04-Nov-2012 Simon J. Gerraty <sjg@FreeBSD.org>

Sync from head


# f8ff57d2 14-Oct-2012 Alexander Motin <mav@FreeBSD.org>

Add explicit check for not set time inside cam_periph_freeze_after_event().

System time is set later on boot process then initial bus scan by CAM.
Until that moment microtime() is equal to microupti

Add explicit check for not set time inside cam_periph_freeze_after_event().

System time is set later on boot process then initial bus scan by CAM.
Until that moment microtime() is equal to microuptime(), and if system
boots quickly, the value can be close to zero. That causes settle time
waiting even for buses that don't use reset during probe.

On my test system this reduces boot time by 1 second if USB enabled, or
by 4 seconds if USB disabled. CAM waited for ctl2cam0 bus "settle".

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# e11b6fa3 03-Aug-2012 Gleb Smirnoff <glebius@FreeBSD.org>

Merge head r233826 through r239010.


# 3631c638 29-Jul-2012 Alexander Motin <mav@FreeBSD.org>

Implement media change notification for DA and CD removable media devices.
It includes three parts:
1) Modifications to CAM to detect media media changes and report them to
disk(9) layer. For modern

Implement media change notification for DA and CD removable media devices.
It includes three parts:
1) Modifications to CAM to detect media media changes and report them to
disk(9) layer. For modern SATA (and potentially UAS) devices it utilizes
Asynchronous Notification mechanism to receive events from hardware.
Active polling with TEST UNIT READY commands with 3 seconds period is used
for incapable hardware. After that both CD and DA drivers work the same way,
detecting two conditions: "NOT READY: Medium not present" after medium was
detected previously, and "UNIT ATTENTION: Not ready to ready change, medium
may have changed". First one reported to disk(9) as media removal, second
as media insert/change. To reliably receive second event new
AC_UNIT_ATTENTION async added to make UAs broadcasted to all periphs by
generic error handling code in cam_periph_error().
2) Modifications to GEOM core to handle media remove and change events.
Media removal handled by spoiling all consumers attached to the provider.
Media change event also schedules provider retaste after spoiling to probe
new media. New flag G_CF_ORPHAN was added to consumers to reflect that
consumer is in process of destruction. It allows retaste to create new
geom instance of the same class, while previous one is still dying.
3) Modifications to some GEOM classes: DEV -- to report media change
events to devd; VFS -- to handle spoiling same as orphan to prevent
accessing replaced media. PART class already handles spoiling alike to
orphan.

Reviewed by: silence on geom@ and scsi@
Tested by: avg
Sponsored by: iXsystems, Inc. / PC-BSD
MFC after: 2 months

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# de720122 15-Jul-2012 Gleb Smirnoff <glebius@FreeBSD.org>

Merge head r236710 through r238467.


# 6cf87ec8 13-Jul-2012 Xin LI <delphij@FreeBSD.org>

IFC @238412.


# b652778e 11-Jul-2012 Peter Grehan <grehan@FreeBSD.org>

IFC @ r238370


# 905cb85d 28-Jun-2012 Kenneth D. Merry <ken@FreeBSD.org>

Fix a typo in a panic() call.

PR: kern/169497
Submitted by: Steven Hartland <steven.hartland@multiplay.co.uk>
MFC after: 3 days


# e7493b28 23-Jun-2012 Alexander Motin <mav@FreeBSD.org>

Add scsi_extract_sense_ccb() -- wrapper around scsi_extract_sense_len().
It allows to remove number of duplicate checks from several places.


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