Commit Graph

35 Commits

Author SHA1 Message Date
John Baldwin
a2677ff239 Don't bother clearing maps for static DMA allocations to NULL. Instead,
leave them as purely opaque values that are only set by bus_dmamem_alloc().
2014-06-17 18:10:06 +00:00
Ian Lepore
add35ed5b8 Follow r261352 by updating all drivers which are children of simplebus
to check the status property in their probe routines.

Simplebus used to only instantiate its children whose status="okay"
but that was improper behavior, fixed in r261352.  Now that it doesn't
check anymore and probes all its children; the children all have to
do the check because really only the children know how to properly
interpret their status property strings.

Right now all existing drivers only understand "okay" versus something-
that's-not-okay, so they all use the new ofw_bus_status_okay() helper.
2014-02-02 19:17:28 +00:00
Eitan Adler
7a22215c53 Fix undefined behavior: (1 << 31) is not defined as 1 is an int and this
shifts into the sign bit.  Instead use (1U << 31) which gets the
expected result.

This fix is not ideal as it assumes a 32 bit int, but does fix the issue
for most cases.

A similar change was made in OpenBSD.

Discussed with:	-arch, rdivacky
Reviewed by:	cperciva
2013-11-30 22:17:27 +00:00
Zbigniew Bodek
be445686da Run mvs SATA driver on Armada XP instead of old mv_sata
The mvs driver seems to be more functional than mv_sata and is not
causing random interrupt storms during boot.
2013-10-28 07:18:24 +00:00
Alexander Motin
227d67aa54 Merge CAM locking changes from the projects/camlock branch to radically
reduce lock congestion and improve SMP scalability of the SCSI/ATA stack,
preparing the ground for the coming next GEOM direct dispatch support.

Replace big per-SIM locks with bunch of smaller ones:
 - per-LUN locks to protect device and peripheral drivers state;
 - per-target locks to protect list of LUNs on target;
 - per-bus locks to protect reference counting;
 - per-send queue locks to protect queue of CCBs to be sent;
 - per-done queue locks to protect queue of completed CCBs;
 - remaining per-SIM locks now protect only HBA driver internals.

While holding LUN lock it is allowed (while not recommended for performance
reasons) to take SIM lock.  The opposite acquisition order is forbidden.
All the other locks are leaf locks, that can be taken anywhere, but should
not be cascaded.  Many functions, such as: xpt_action(), xpt_done(),
xpt_async(), xpt_create_path(), etc. are no longer require (but allow) SIM
lock to be held.

To keep compatibility and solve cases where SIM lock can't be dropped, all
xpt_async() calls in addition to xpt_done() calls are queued to completion
threads for async processing in clean environment without SIM lock held.

Instead of single CAM SWI thread, used for commands completion processing
before, use multiple (depending on number of CPUs) threads.  Load balanced
between them using "hash" of the device B:T:L address.

HBA drivers that can drop SIM lock during completion processing and have
sufficient number of completion threads to efficiently scale to multiple
CPUs can use new function xpt_done_direct() to avoid extra context switch.
Make ahci(4) driver to use this mechanism depending on hardware setup.

Sponsored by:	iXsystems, Inc.
MFC after:	2 months
2013-10-21 12:00:26 +00:00
Alexander Motin
9cf417295d Replicate r242422 from ata(4) to mvs(4):
Only four specific ATA PIO commands transfer several sectors per DRQ block
(interrupt).  All other ATA PIO commands transfer one sector or 512 bytes
at one time.  Hardcode these exceptions in mvs(4) with ATA_CAM option.
This fixes timeout of READ LOG EXT command used by `smartctl -x /dev/adaX`.
Also it fixes timeout of DOWNLOAD_MICROCODE on `camcontrol fwdownload`.
2013-06-12 18:08:11 +00:00
Alexander Motin
ca11419237 Make siis(4) and mvs(4) send bus_get_dma_tag() requests to parent buses
passing real bus' child pointers instead of grandchilds.

Requested by:	kib
2013-04-18 12:43:06 +00:00
Konstantin Belousov
dd0b4fb6d5 Reform the busdma API so that new types may be added without modifying
every architecture's busdma_machdep.c.  It is done by unifying the
bus_dmamap_load_buffer() routines so that they may be called from MI
code.  The MD busdma is then given a chance to do any final processing
in the complete() callback.

The cam changes unify the bus_dmamap_load* handling in cam drivers.

The arm and mips implementations are updated to track virtual
addresses for sync().  Previously this was done in a type specific
way.  Now it is done in a generic way by recording the list of
virtuals in the map.

Submitted by:	jeff (sponsored by EMC/Isilon)
Reviewed by:	kan (previous version), scottl,
	mjacob (isp(4), no objections for target mode changes)
Discussed with:	     ian (arm changes)
Tested by:	marius (sparc64), mips (jmallet), isci(4) on x86 (jharris),
	amd64 (Fabian Keil <freebsd-listen@fabiankeil.de>)
2013-02-12 16:57:20 +00:00
Hiroki Sato
c8953e1273 Add support for Marvell 88F6282.
Sponsored by:	Plat'Home, Co.,Ltd.
2012-07-28 21:56:24 +00:00
Alexander Motin
b30c7d5167 - Limit r214102 workaround to only x86. On arm it causes more problems
then solves because of cache coherency issues. This fixes periodic error
messages on console and command timeouts.
 - Patch SATA PHY configuration for 65nm SoCs to improve SNR same as
Linux does.

MFC after:	2 weeks
2012-06-12 11:08:51 +00:00
Alexander Motin
eb586bd9ee Partially revert r236666:
Return PROTO_ATA protocol in response to XPT_PATH_INQ.

smartmontools uses it to identify ATA devices and I don't know any other
place now where it is important. It could probably use XPT_GDEV_TYPE
instead for more accurate protocol information, but let it live for now.

Reported by:	matthew
MFC after:	3 days
2012-06-10 11:17:14 +00:00
Alexander Motin
bc1bf6e842 ATA/SATA controllers have no idea about protocol of the connected device
until transport will do some probe actions (at least soft reset).
Make ATA/SATA SIMs to not report bogus and confusing PROTO_ATA protocol.
Make ATA/SATA transport to fill that gap by reporting protocol to SIM with
XPT_SET_TRAN_SETTINGS and patching XPT_GET_TRAN_SETTINGS results if needed.
2012-06-06 06:52:51 +00:00
Alexander Motin
711f661393 Add two functions xpt_batch_start() and xpt_batch_done() to the CAM SIM KPI
to allow drivers to handle request completion directly without passing
them to the CAM SWI thread removing extra context switch.
Modify all ATA/SATA drivers to use them.

Reviewed by:	gibbs, ken
MFC after:	2 weeks
2012-05-12 13:55:36 +00:00
Rafal Jaworowski
c72ef339bf Adjust mvs(4) to handle interrupt cause reg depending on the actual number of
channels available

- current code treats bits 4:7 in 'SATAHC interrupt mask' and 'SATAHC
  interrupt cause' as flags for SATA channels 2 and 3

- for embedded SATA controllers (SoC) these bits have been marked as reserved
  in datasheets so far, but for some new and upcoming chips they are used for
  purposes other than SATA

Submitted by:	Lukasz Plachno
Reviewed by:	mav
Obtained from:	Semihalf
MFC after:	2 weeks
2012-02-01 13:39:52 +00:00
Hans Petter Selasky
3b12bdb58f Rename device_delete_all_children() into device_delete_children().
Suggested by:	jhb @ and marius @
MFC after:	1 week
2011-11-22 21:56:55 +00:00
Hans Petter Selasky
11bcf702f4 Move the device_delete_all_children() function from usb_util.c
to kern/subr_bus.c. Simplify this function so that it no longer
depends on malloc() to execute. Identify a few other places where
it makes sense to use device_delete_all_children().

MFC after:	1 week
2011-11-19 10:11:50 +00:00
Ed Schouten
d745c852be Mark MALLOC_DEFINEs static that have no corresponding MALLOC_DECLAREs.
This means that their use is restricted to a single C file.
2011-11-07 06:44:47 +00:00
Alexander Motin
08c8fde007 According to SATA specification, when Serial ATA Enclosure Management Bridge
(SEMB) is unable to communicate to Storage Enclosure Processor (SEP), in
response to hard and soft resets it should among other things return value
0x7F in Status register. The weird side is that it means DRQ bit set, which
tells that reset request is not completed. It would be fine if SEMB was the
only device on port. But if SEMB connected to PMP or built into it, it may
block access to other devices sharing same SATA port.

Make some tunings/fixes to soft-reset handling to workaround the issue:
 - ahci(4): request CLO on the port after soft reset to ignore DRQ bit;
 - siis(4): gracefully reinitialize port after soft reset timeout (hardware
doesn't detect reset request completion in this case);
 - mvs(4): if PMP is used, send dummy soft-reset to the PMP port to make it
clear DRQ bit for us.

For now this makes quirks in ata_pmp.c, hiding SEMB ports of SiI3726/SiI4726
PMPs, less important. Further, if hardware permit, I hope to implement real
SEMB support.
2011-05-25 13:55:49 +00:00
Alexander Motin
7bcc595738 Fix some English grammar. 2011-04-19 10:57:40 +00:00
Alexander Motin
1f145eafea According to specification. device should respond to COMRESET with COMINIT
in no more then 10ms. If we detected no device presence within that time,
there is no reason to wait longer.
2011-04-19 10:51:19 +00:00
Alexander Motin
6ac0befde2 Properly handle memory allocation errors during error recovery. 2011-04-19 08:01:17 +00:00
Alexander Motin
70b7af2b21 Refactor hard-reset implementation in mvs(4).
Instead of spinning in a tight loop for up to 15 seconds, polling for device
readiness while it spins up, return reset completion just after PHY reports
"connect well" or 100ms connection timeout. If device was found, use callout
for checking device readiness with 100ms period up to full 31 second timeout.

This fixes system freeze for 5-10 seconds on drives hot plug-in.
2011-04-14 07:49:45 +00:00
Alexander Motin
8d169381e4 Improve SATA Asynchronous Notification feature support in CAM:
- make SATA SIMs announce capabilities to handle SDB with Notification bit;
 - make PMP driver honor this SIMs capability;
 - make SATA XPT to negotiate and enable this feature for ATAPI devices.

This feature allows supporting SATA ATAPI devices to inform system about
some events happened, that may require attention. In my case this allows
LG GH22LS50 SATA DVR-RW drive to report tray open/close events. Events
reported to CAM in form of AC_SCSI_AEN async. Further they could be used
as a hints for checking device status and reporting media change to upper
layers, for example, via spoiling mechanism of GEOM.
2011-04-13 16:20:54 +00:00
Alexander Motin
97fd3ac63f Implement automatic SCSI sense fetching for mvs(4).
Make few improvements/changes to ATAPI PIO support to pass most of scgcheck
(cdrtools) tests.
2011-04-12 16:01:27 +00:00
Alexander Motin
01e2aa9f81 Update mvs(4) driver to work over FDT's simplebus(4) bus. 2011-03-28 11:08:58 +00:00
Alexander Motin
6c87235098 Workaround strange situation when EDMA_RESQIP register returns zero instead
of proper value. It caused bunch of "EMPTY CRPB" messages and potentially
may cause premature requests completion, which could cause data corruption.
For most cases it seems enough to just reread register to get proper value.
To protect against worse cases - erase processed queue entries with
impossible values and ignore them if problem still happen.
2010-10-20 07:47:31 +00:00
Alexander Motin
c0609c547a Some style cleanup:
- remove commented debugging code;
- wrap long lines.
2010-10-20 07:22:34 +00:00
Alexander Motin
bf12976c76 Fix panic, when due to some kind of congestion on FIS-based switching
port multiplier some command triggers false positive timeout, but then
completes normally.

MFC after:	2 weeks
2010-09-16 12:39:50 +00:00
Alexander Motin
8edcf69406 Export PCI IDs of ATA/SATA controllers through CAM and ata(4) layers to
GEOM. This information needed for proper soft-RAID's on-disk metadata
reading and writing.
2010-07-25 15:43:52 +00:00
Alexander Motin
de29bf5e98 Plug memory leak to silent Coverity. Error is still not really handled.
Found with:   Coverity Prevent(tm)
CID:          4137
2010-06-05 08:21:18 +00:00
Alexander Motin
cc6b610bea Fill rman range start/end values. It makes devinfo output more readable. 2010-05-22 08:30:47 +00:00
Alexander Motin
445cc79ca9 Report ATA/SATA channel number to NewBus at location string. 2010-05-22 07:32:47 +00:00
Alexander Motin
243e0fb9a0 Improve suspend/resume support. Make sure controller is idle on suspend
and reset it on resume.
2010-05-21 17:26:16 +00:00
Alexander Motin
14496931b0 Fix polled operation. Now it is possible to dump kernel via mvs(4). 2010-05-06 06:44:26 +00:00
Alexander Motin
dd48af360f Import mvs(4) - Marvell 88SX50XX/88SX60XX/88SX70XX/SoC SATA controllers
driver for CAM ATA subsystem. This driver supports same hardware as
atamarvell, ataadaptec and atamvsata drivers from ata(4), but provides
many additional features, such as NCQ, PMP, etc.
2010-05-02 19:28:30 +00:00