Commit Graph

58 Commits

Author SHA1 Message Date
Alexander Motin
025e2c1221 In addition to r217444 ignore also ATA status errors on DMA Auto-Activation
enabling request. Some HP disks reported to return ABORT error there while
declaring support for this feature.
2011-01-26 06:57:48 +00:00
Alexander Motin
958e4a696f Make device initialization sequence shorter when possible. Do not enable/
disable already enabled/disabled SATA features.
2011-01-26 06:37:51 +00:00
Alexander Motin
26bdaeddd8 Some old WD SATA disks report supported and enabled device-initiated
interface power management, but return ABORT error on attempt to disable
it. Make CAM SATA probe sequence ignore this error, as it is not fatal.
2011-01-15 09:43:25 +00:00
Alexander Motin
c2b82f3e61 If HBA doesn't report user-enabled SATA capabilies (like ATA_CAM wrapper) -
handle all of them as disabled. This was original cause of the problem,
workarounded by r215453.

MFC after:	1 week
2010-11-18 13:38:33 +00:00
Rebecca Cran
fd104c151b Mostly revert r203420, and add similar functionality into ada(4) since the
existing code caused problems with some SCSI controllers.

A new sysctl kern.cam.ada.spindown_shutdown has been added that controls
whether or not to spin-down disks when shutting down.
Spinning down the disks unloads/parks the heads - this is
much better than removing power when the disk is still
spinning because otherwise an Emergency Unload occurs which may cause damage
to the actuator.

PR:	kern/140752
Submitted by:   olli
Reviewed by:	arundel
Discussed with: mav
MFC after:	2 weeks
2010-10-24 16:31:57 +00:00
Justin T. Gibbs
f03f7a0ca3 Correct bioq_disksort so that bioq_insert_tail() offers barrier semantic.
Add the BIO_ORDERED flag for struct bio and update bio clients to use it.

The barrier semantics of bioq_insert_tail() were broken in two ways:

 o In bioq_disksort(), an added bio could be inserted at the head of
   the queue, even when a barrier was present, if the sort key for
   the new entry was less than that of the last queued barrier bio.

 o The last_offset used to generate the sort key for newly queued bios
   did not stay at the position of the barrier until either the
   barrier was de-queued, or a new barrier (which updates last_offset)
   was queued.  When a barrier is in effect, we know that the disk
   will pass through the barrier position just before the
   "blocked bios" are released, so using the barrier's offset for
   last_offset is the optimal choice.

sys/geom/sched/subr_disk.c:
sys/kern/subr_disk.c:
	o Update last_offset in bioq_insert_tail().

	o Only update last_offset in bioq_remove() if the removed bio is
	  at the head of the queue (typically due to a call via
	  bioq_takefirst()) and no barrier is active.

	o In bioq_disksort(), if we have a barrier (insert_point is non-NULL),
	  set prev to the barrier and cur to it's next element.  Now that
	  last_offset is kept at the barrier position, this change isn't
	  strictly necessary, but since we have to take a decision branch
	  anyway, it does avoid one, no-op, loop iteration in the while
	  loop that immediately follows.

	o In bioq_disksort(), bypass the normal sort for bios with the
	  BIO_ORDERED attribute and instead insert them into the queue
	  with bioq_insert_tail().  bioq_insert_tail() not only gives
	  the desired command order during insertion, but also provides
	  barrier semantics so that commands disksorted in the future
	  cannot pass the just enqueued transaction.

sys/sys/bio.h:
	Add BIO_ORDERED as bit 4 of the bio_flags field in struct bio.

sys/cam/ata/ata_da.c:
sys/cam/scsi/scsi_da.c
	Use an ordered command for SCSI/ATA-NCQ commands issued in
	response to bios with the BIO_ORDERED flag set.

sys/cam/scsi/scsi_da.c
	Use an ordered tag when issuing a synchronize cache command.

	Wrap some lines to 80 columns.

sys/cddl/contrib/opensolaris/uts/common/fs/zfs/vdev_geom.c
sys/geom/geom_io.c
	Mark bios with the BIO_FLUSH command as BIO_ORDERED.

Sponsored by:	Spectra Logic Corporation
MFC after:	1 month
2010-09-02 19:40:28 +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
25a519a918 ATA device reset starts probe sequence from the beginning. If reset caused
by timeout/error of one of probe commands, process may continue infinitely.
Make CAM ATA more robust to faulty devices and false positive detections,
abort probe after two restarts on timeouts or ten on other errors.
2010-07-06 19:05:41 +00:00
Alexander Motin
f1893540ff Add allocation error hadling.
Found with:   Coverity Prevent(tm)
CID:          3897
2010-06-05 09:31:13 +00:00
Alexander Motin
81bfc0fc44 Fix double free on error.
Found with:   Coverity Prevent(tm)
CID:          4573
2010-06-05 08:36:37 +00:00
Matt Jacob
0e85f214e3 Add a new primitive, XPT_SCAN_TGT, to cover the range between scanning a
whole bus (XPT_SCAN_BUS) and a single lun on that bus (XPT_SCAN_LUN).

It's less resource comsumptive than scanning a whole bus when the
caller knows only one target has changes.

Reviewed by:	scsi@
Sponsored by:	Panasas
MFC after:	1 month
2010-05-26 22:49:42 +00:00
Marius Strobl
4461491b3e Change ad_firmware_geom_adjust() to operate on a struct disk * only and
hook it up to ada(4) also. While at it, rename *ad_firmware_geom_adjust()
to *ata_disk_firmware_geom_adjust() etc now that these are no longer
limited to ad(4).

Reviewed by:	mav
MFC after:	3 days
2010-05-20 12:46:19 +00:00
Marius Strobl
f399274395 Remove unnecessary headers which were inherited from cam_xpt.c without
reason.

Reviewed by:	mav
MFC after:	3 days
2010-05-20 12:44:06 +00:00
Alexander Motin
da6808c111 Make SATA XPT negotiate and enable some additional SATA features, such as:
- device initiated power management (some devices support only this way);
 - Automatic Partial to Slumber Transition (more power saving);
 - DMA auto-activation (expected to slightly improve performance).
More features could be added later, when hardware supports.
2010-05-02 12:07:47 +00:00
Alexander Motin
e2a751891f Report PMP absence using target 15, same as for precence (not a wildcard),
to not confuse target ID checks at SIMs.
2010-04-30 07:56:21 +00:00
Alexander Motin
2eb4a8dcae Update device identify data and serial number when device change detected.
Reprobe immediately following this should have fresh data.
2010-04-27 15:59:38 +00:00
Alexander Motin
699f853bed MFp4:
Move PI_TAG_ABLE check from ada driver to ATA XPT.
2010-04-26 12:03:55 +00:00
Alexander Motin
1254b6802f Make PUIS detection more strict. Previous implementation caused false
positives on VMWare's virtual CD-ROMs.
2010-02-26 10:42:46 +00:00
Alexander Motin
57079b1773 Virtualize transport part of periph announcement. 2010-02-22 19:17:17 +00:00
Alexander Motin
639c2d4fad On probe error, if restart requested, skip any retries and recovery.
Just restart probe from the beginning immediately.
2010-02-04 18:56:38 +00:00
Alexander Motin
4ef08dc5a5 MFp4:
Add Power Up In Stand-by feature support. Device with PUIS enabled
require explicit command to do initial spin-up. Mark that command
with CAM_HIGH_POWER flag, to allow CAM manage staggered spin-up.
2010-02-03 10:06:03 +00:00
Alexander Motin
a9b8edb194 - Use separate buffer for identify data fetching. We can't use main buffer
here if device already running, as data need to be formatted before use.
- Remove some saved_ccb variables. They are unused now.
2010-02-02 18:03:21 +00:00
Alexander Motin
4cca153030 - Give ATA/SATA SIMs info about ATAPI packet size, supported by device.
- Make ATA XPT to reject longer SCSI CDBs then supported by device, or
any SCSI CDBs, if device doesn't support ATAPI.
2010-02-02 11:09:28 +00:00
Alexander Motin
83c5d981ac MFp4: Large set of CAM inprovements.
- Unify bus reset/probe sequence. Whenever bus attached at boot or later,
CAM will automatically reset and scan it. It allows to remove duplicate
code from many drivers.
- Any bus, attached before CAM completed it's boot-time initialization,
will equally join to the process, delaying boot if needed.
- New kern.cam.boot_delay loader tunable should help controllers that
are still unable to register their buses in time (such as slow USB/
PCCard/ CardBus devices), by adding one more event to wait on boot.
- To allow synchronization between different CAM levels, concept of
requests priorities was extended. Priorities now split between several
"run levels". Device can be freezed at specified level, allowing higher
priority requests to pass. For example, no payload requests allowed,
until PMP driver enable port. ATA XPT negotiate transfer parameters,
periph driver configure caching and so on.
- Frozen requests are no more counted by request allocation scheduler.
It fixes deadlocks, when frozen low priority payload requests occupying
slots, required by higher levels to manage theit execution.
- Two last changes were holding proper ATA reinitialization and error
recovery implementation. Now it is done: SATA controllers and Port
Multipliers now implement automatic hot-plug and should correctly
recover from timeouts and bus resets.
- Improve SCSI error recovery for devices on buses without automatic sense
reporting, such as ATAPI or USB. For example, it allows CAM to wait, while
CD drive loads disk, instead of immediately return error status.
- Decapitalize diagnostic messages and make them more readable and sensible.
- Teach PMP driver to limit maximum speed on fan-out ports.
- Make boot wait for PMP scan completes, and make rescan more reliable.
- Fix pass driver, to return CCB to user level in case of error.
- Increase number of retries in cd driver, as device may return several UAs.
2010-01-28 08:41:30 +00:00
Alexander Motin
0025eb12c8 - Report SATA in legacy emulation mode still as SATA.
- Make ATA XPT able to handle such case.
2010-01-10 09:20:56 +00:00
Alexander Motin
1c80ec0a6b Add BIO_DELETE support to ada(4):
- For SSDs use TRIM feature of DATA SET MANAGEMENT command, as defined by
ACS-2 specification working draft.
- For CompactFlash use CFA ERASE command, same as ad(4) does.

With this patch, `newfs -E /dev/ada1` was able to restore write speed of
my heavily weared OCZ Vertex SSD (firmware 1.4) up to the initial level
for the most part of it's capacity. Previous 1.3 firmware, even reportiong
TRIM capabilty bit set, was not working, reporting ABORT error for every
DSM command.

I have no idea whether it is normal, but for some reason it takes 200ms
to handle any TRIM command on this drive, that was making delete extremely
slow. But TRIM command is able to accept long list of LBAs and the length of
that list seems doesn't affect it's execution time. Implemented request
clusting algorithm allowed me to rise delete rate up to reasonable numbers,
when many parallel DELETE requests running.
2009-12-28 20:08:01 +00:00
Alexander Motin
ce8332d468 Report stripe size only if physical sector size is not equal to logical. 2009-12-24 21:54:44 +00:00
Alexander Motin
7bdb664e50 MFp4;
- Cleanup kernel messages, mostly PMP.
- Took references on devices, while PMP reinitializes them, to not let them
go and distort freeze reference counting.
2009-12-07 16:23:25 +00:00
Alexander Motin
21cc85878c MFp4:
If we panicked with SIM lock held, do not try to flush caches.
Extra lock recursing will not make debugging easier.
2009-12-06 11:48:53 +00:00
Alexander Motin
066f913a94 MFp4:
Introduce ATA_CAM kernel option, turning ata(4) controller drivers into
cam(4) interface modules. When enabled, this options deprecates all ata(4)
peripheral drivers (ad, acd, ...) and interfaces and allows cam(4) drivers
(ada, cd, ...) and interfaces to be natively used instead.

As side effect of this, ata(4) mode setting code was completely rewritten
to make controller API more strict and permit above change. While doing
this, SATA revision was separated from PATA mode. It allows DMA-incapable
SATA devices to operate and makes hw.ata.atapi_dma tunable work again.

Also allow ata(4) controller drivers (except some specific or broken ones)
to handle larger data transfers. Previous constraint of 64K was artificial
and is not really required by PCI ATA BM specification or hardware.

Submitted by:	nwitehorn (powerpc part)
2009-12-06 00:10:13 +00:00
Alexander Motin
f3631e8d74 Add CAM_ATAIO_DMA ATA command flag to mark DMA protocol commands.
It is not needed for SATA controllers, but required for PATA.
2009-12-01 23:01:29 +00:00
Alexander Motin
b447e682d6 MFp4:
Improve ATA mode/SATA revision control.
2009-11-26 08:49:46 +00:00
Alexander Motin
1a6f09b826 Fix small copu-paste bug. 2009-11-25 14:24:14 +00:00
Alexander Motin
c8039fc667 MFp4:
- Extend XPT-SIM transfer settings control API. Now it allows to report to
SATA SIM number of tags supported by each device, implement ATA mode and
SATA revision negotiation for both SATA and PATA SIMs.
- Make ahci(4) and siis(4) to use submitted maximum tag number, when
scheduling requests. It allows to support NCQ on devices with lower tags
count then controller supports.
- Make PMP driver to report attached devices connection speeds.
- Implement ATA mode negotiation between user settings, device and
controller capabilities.
2009-11-24 12:47:58 +00:00
Alexander Motin
3a3e47990c Disable PortMultiplier Async Notifications for time of ports reset.
They are useless at that time, but confuse Marvell AHCI.

Add quirk for SiI57XX Port Multipliers, to hide extra port.
2009-11-16 15:18:02 +00:00
Alexander Motin
507e581190 MFp4:
Do not enable tagged queueing if controller reports 0 tags support.
2009-11-14 08:08:49 +00:00
Alexander Motin
30a4094f86 MFp4:
- Move tagged queueing control from ADA to ATA XPT. It allows to control
  device command queue length correctly. First step to support < 32 tags.
- Limit queue for non-tagged devices by 2 slots for ahci(4) and siis(4).
- Implement quirk matching for ATA devices.
- Move xpt_schedule_dev_sendq() from header to source file.
- Move delayed queue shrinking to the more expected place - element freeing.
- Remove some SCSIsms in ATA.
2009-11-11 11:10:36 +00:00
Alexander Motin
2a3510fd51 Fix protype. 2009-11-04 16:37:13 +00:00
Alexander Motin
fd2cc0bde8 PMP commands use short format. PMP write doesn't return result. 2009-11-04 16:16:50 +00:00
Alexander Motin
efa575b6be MFp4:
- Remove CAM_PERIPH_POLLED flag. It is broken by design. Polling can't be
periph flag. May be SIM, may be CCB, but now it works fine just without it.
- Remove check unused for at least five years. If we will ever have non-BIO
devices in CAM, this check is smallest of what we will need.
- If several controllers complete requests same time, call swi_sched()
only once.
2009-11-04 15:40:19 +00:00
Alexander Motin
c1bd46c2d3 MFp4:
- Add support for sector size > 512 bytes and physical sector of several
logical sectors, introduced by ATA-7 specification.
- Remove some obsoleted code.
2009-11-04 15:24:32 +00:00
Alexander Motin
8691755dff MFp4:
Improve reporting ATA Status error details.
2009-11-03 11:19:05 +00:00
Alexander Motin
f98d7a47e2 MFp4:
Fix reference counting bug, when device unreferenced before then
invalidated. To do it, do not handle validity flag as another
reference, but explicitly modify reference count each time flag is
modified.

Discovered by:	thompsa
2009-11-01 11:31:06 +00:00
Alexander Motin
1e637ba677 MFp4:
- Reduce code duplication in ATA XPT and PMP driver.
- Move PIO size setting from ada driver to ATA XPT. It is XPT business
to negotiate transfer details. ada driver is now stateless.
- Report PIO size to SIM. It is required for correct PATA SIM operation.
- Tune PMP scan timings. It workarounds some problems with SiI.
- If reset hapens during PMP initialization - restart it.
- Introduce early-initialized periph drivers, which are used during initial
scan process. Use it for xpt, probe, aprobe and pmp. It gives pmp chance
to finish scan before mountroot and numerate devices in right order.
2009-10-31 10:43:38 +00:00
Alexander Motin
65d0fb03ad MFp4:
Move Port Multiplier support code out of ATA XPT into pmp periph driver.
This is convinient, as PMP itself is a bus target and has own state.
2009-10-23 12:36:42 +00:00
Alexander Motin
bbfa4aa1a6 Replace most of priority numbers with defines. No logical changes. 2009-10-23 08:27:55 +00:00
Alexander Motin
4b997c49c0 MFp4:
Separate CAM_DEV_IDENTIFY_DATA_VALID flag from CAM_DEV_INQUIRY_DATA_VALID.
Add workaround for very old devices without support for mode setting.
Add some PATA bus scanning support.
Remove some SCSIsms.
2009-10-21 15:27:48 +00:00
Alexander Motin
46f118fe3f MFp4:
Add support for PIO-only devices.
Fix maxio values and 256 sectors transactions for 28bits commands.
Implement periodic ordered commands insertion, sames as da driver does.
Remove some SCSIsms.
2009-10-21 14:20:55 +00:00
Alexander Motin
8e7cccb3bd MFp4:
Report real max_target = 15. SIM doesn't need to know that target 15 is PMP.
It is XPT business.
2009-10-21 13:00:01 +00:00
Pawel Jakub Dawidek
9cdcd1c520 Export disk serial numbers for adaX disks.
Reviewed by:	mav
MFC after:	3 days
2009-10-09 09:29:59 +00:00