to known AHCI-capable chips (AMD/NVIDIA), configured for legacy emulation.
Enabled by default to get additional performance and functionality of AHCI
when it can't be enabled by BIOS. Can be disabled to honor BIOS settings if
needed for some reason.
MFC after: 1 month
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
The SYSCTL_NODE macro defines a list that stores all child-elements of
that node. If there's no SYSCTL_DECL macro anywhere else, there's no
reason why it shouldn't be static.
by rman_get_virtual(9) to access device registers sparc64 currently cares
about.
Ideally ata(4) should just be converted to access these using bus_space(9)
read/write functions instead as there's really no reason to do it the
former way. However, this part of ata-siliconimage.c should go away in
favor of siis(4) sooner or later anyway and I don't have the hardware to
actually test the SX4 bits of ata-promise.c.
Also ideally the other architectures should also properly handle the
BUS_SPACE_MAP_LINEAR flag of bus_space_map(9) so this code wouldn't need
to be #ifdef'ed.
- for the legacy PCI ATA channels move channel number out of the device
description, same as it is for ahci(4), siis(4) and mvs(4);
- add device description for the ISA ATA channels.
option is defined. This sysctl can be queried by feature_present(3).
Query for this feature in /sbin/atacontrol and /usr/sbin/burncd.
If these utilities detect that ATA_CAM is enabled, then these utilities
will error out. These utilities are compatible with the old ATA
driver, but are incomptible with the new ATA_CAM driver. By erroring out,
we give end-users an idea as to what remedies to use, and reduce the need for them
to file PR's. For atacontrol, camcontrol must be used instead,
and for burncd, alternative utilties from the ports collection must be used
such as sysutils/cdrtools.
In future, maybe someone can re-write burncd to work with ATA_CAM,
but at least for now, we give a somewhat useful error message to end users.
PR: 160979
Reviewed by: jh, Arnaud Lacombe <lacombar at gmail dot com>
Reported by: Joe Barbish <fbsd8 at a1poweruser dot com>
MFC after: 3 days
Mac with this chipset does not initialize AHCI mode unless it is started
from EFI loader. However, legacy ATA mode works.
Submitted by: jkim@ (original version)
Approved by: re (kib)
MFC after: 1 week
accessing SATA registers. Unserialized access under heavy load caused
wrong speed reporting and potentially could cause device loss.
- To free memory and other resources (including above), allocated
during chipinit() method call on attach, add new chipdeinit() method,
called during driver detach.
Submitted by: Andrew Boyer <aboyer@averesystems.com> (initial version)
Approved by: re (kib)
MFC after: 1 week
but has only 2 SATA ports instead of 4. The worst part is that SStatus and
SError registers for missing ports are not implemented and return wrong
values (0xffffffff), that caused infinite reset loop.
Just ignore that SError value while I found no better way to identify them.
should respond with all zeroes to any access to slave registers. Test with
PATA devices confirmed such behavior. Unluckily, Intel SATA controllers in
legacy emulation mode behave differently, not making any difference between
ATA and ATAPI devices. It causes false positive slave device detection and,
as result, command timeouts.
To workaround this problem, mask result of legacy-emulated soft-reset with
the device presence information received from the SATA-specific registers.
This improves hard-reset and hot-plug on these ports.
- Device with ID 0x29218086 is a 2-port variant of ICH9 in legacy mode.
Skip probing for nonexistent slave devices there.
It allows to avoid false positive device detection under Xen, that caused
long probe delays due to subsequent IDENTIFY command timeouts.
MFC after: 1 month
the ataahci(4) and atamarvell(4) drivers share it between the host and
the controller.
- Spell some zeros as BUS_DMA_WAITOK when used as bus_dmamem_alloc() flags.
MFC after: 2 weeks
- SMBus Controller
- SATA Controller
- HD Audio Controller
- Watchdog Controller
Thanks to Seth Heasley (seth.heasley@intel.com) for providing us code.
MFC after 3 days
via AHCI-like memory resource at BAR(5). Use it if BIOS was so kind to
allocate memory for that BAR. This allows hot-plug support and connection
speed reporting.
MFC after: 2 weeks
i.e. alignment, max_address, max_iosize and segsize (only max_address is
thought to have an negative impact regarding this issue though), after
calling ata_dmainit() either directly or indirectly so these values have
no effect or at least no effect on the DMA tags and the defaults are used
for the latter instead. So change the drivers to set these parameters
up-front and ata_dmainit() to honor them.
Reviewd by: mav
MFC after: 1 month
- Implement proper combined mode decoding for Intel controllers to properly
identify SATA and PATA channels and associate ATA channels with SATA ports.
This fixes wrong reporting and in some cases hard resets to wrong SATA ports.
- Improve SATA registers support to handle hot-plug events and potentially
interface errors. For ICH5/6300ESB chipsets these registers accessible via
PCI config space. For later ones they may be accessible via PCI BAR(5).
- For controllers not generating interrupts on hot-plug events, implement
periodic status polling. Use it to detect hot-plug on Intel and VIA
controllers. Same probably could also be used for Serverworks and SIS.
K2 SATA controllers. The chip's status register must be read first, and
as a long, for other registers to be correctly updated after a command, and
this includes the command sequence in device detection as well as the
previously handled case after interrupts. While here, clean up some
previous hacks related to this controller.
Reported by: many
Reviewed by: mav
MFC after: 3 weeks
response to DMA activate FIS under certain circumstances. This is
recommended fix from chip datasheet. If triggered, this bug most likely
cause write command timeout.
MFC after: 2 weeks
value 0xff. On hot-plug this value confuses ata_generic_reset() device
presence detection logic. As soon as we already know drive presence from
SATA hard reset, hint ata_generic_reset() to wait for device signature
until success or full timeout.
Do not grab lock while setting up interrupt, as it causes LOR with
allocation code. Instead make interrupt handler check that CAM bus
initialization completed before touching it.
While there, slightly improve attach errors handling.
Reported by: kib
it. This can happen in some cases when plugging in SD/SmartCard PC
Cards with empty slots. It is better to detect this bogosity, and
refuse to attach rather than panic with a division by zero (in one of
many places) down stream.
corruption bug where if an ATA command is issued before DMA is started,
data will become available to the controller before it knows what to do
with it. This results in either data corruption or a controller crash.
This patch remedies the problem by adopting the workaround employed
by Linux and Darwin: starting the DMA engine prior to sending the ATA
command.
Observer on: Xserve G5
Reviewed by: mav
MFC after: 1 week
fix. On Apple OpenPICs, the low/high bit of the interrupt sense is only
respected for interrupt 0. We currently erroneously program all OpenPIC
interrupts level high instead of level low by default, which only matters
for some G5 systems where the SATA controllers use IRQ 0.
This change is a quick fix that will be reverted once the effect of
changing the default interrupt sense on embedded systems is known.
MFC after: 3 days
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
- 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.
Limit early revisions from 6Gb/s to 3Gb/s by default, or they negotiate
only 1.5Gbps, when 3Gb/s devices connected.
Add dummy driver for PATA part of these controllers, preventing generic
driver attach them. It causes system freeze when SATA controller used after
PATA was touched.
- These revisions no longer have cable detection capability.
- The UDMA support bit of register 0x4b has been dropped without an
replacement.
- According to Linux it's crucial for working ATAPI DMA support to
also set the reserved bit 1 of regsiter 0x53 with these revisions.
MFC after: 1 week
native, i.e. big-endian, format and convert as appropriate like we
also do with the multibyte fields of the other pages. This fixes
the output of acd_describe() to match reality on big-endian machines
without breaking it on little-endian ones. While at it, also convert
the remaining multibyte fields of the pages read although they are
currently unused for consistency and in order to prevent possible
similar bugs in the future.
MFC after: 1 week
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)
normal in case of media read error and some ATAPI cases, when transfer size
is unknown beforehand. PCI ATA BM specification tells that in case of such
underrun driver should just manually stop DMA engine. DMA engine should
same time guarantie that all bus mastering transfers completed at the moment
of driver reads interrupt flag asserted.
This change should fix interrupt storms and command timeouts in many cases.
PR: kern/103602, sparc64/121539, kern/133122, kern/139654
long as I remember, and completely superseded by better maintained umass(4).
It's main idea was to optionally avoid CAM dependency for such devices, but
with move ATA to CAM, it is not actual any more.
No objections: hselasky@, thompsa@, arch@
Binary divider value 10 specified in datasheet is not a hex 0x10.
UDMA2 should be 33/2 instead of 66/4, which is documented as reverved,
UDMA4 should be 66/2 instead of 66/4, which is definitely wrong.
and Marvell handled. Instead of trying to attach two different drivers to
single device, wrapping each call, make one of them (atajmicron, atamarvell)
attach do device solely, but create child device for AHCI driver,
passing it all required resources. It is quite easy, as none of
resources are shared, except IRQ.
As result, it:
- makes drivers operation more independent and straitforward,
- allows to use new ahci(4) driver with such devices, adding support for
new features, such as PMP and NCQ, same time keeping legacy PATA support,
- will allow to just drop old ataahci driver, when it's time come.
These controllers provide combination of AHCI for SATA and legacy
PCI ATA for PATA. Use same solution as used for JMicron controllers.
Add IDs of Marvell 88SX6102, 88SX6111. 88SX6141 alike controllers
- Remove most of direct relations between ATA(4) peripherial and controller
levels. It makes logic more transparent and is a mandatory step to wrap
ATA(4) controller level into ATA-native CAM SIM.
- Tune AHCI and SATA2 SiI drivers memory allocation a bit to allow bigger
I/O transaction sizes without additional cost.
obsoleted in 1996 by ATA-2, and crashes some modern hardware like some
revisions of the Serverworks K2 SATA controller. Even very ancient
hardware seems not to require it. In the unlikely event this causes
problems, the previous behavior can be re-enabled by defining
ATA_LEGACY_SUPPORT at the top of this file.
Reviewed by: Alexander Motin <mav@freebsd.org>
and progif is evil. It doesn't work reliably[1] and we should honor BIOS
configuration by the user.
- If the SATA controller is enbled but combined mode is disabled, mask off
the emulated IDE channel on the legacy IDE controller.
Pointed out by: mav[1]
the work area was totally unsynchronized which means this driver only
had a chance of working on x86 when no bounce buffers were involved,
which isn't that likely given that support for 64-bit DMA is currently
broken throughout ata(4).
- Add necessary little-endian conversion of accesses to the work area,
making this driver work on big-endian hosts. While at it, use the
alignment-agnostic byte order encoders in order to be on the safe side.
- Clear the reserved member of the SG list entries in order to be on the
safe side. [1]
Submitted by: yongari [1]
Reviewed by: yongari
MFC after: 3 days
requirements. It is busdma task, to manage proper alignment by loading
data to bounce buffers.
PR: kern/127316
Reviewed by: current@
Tested by: Ryan Rogers
The newbus lock is responsible for protecting newbus internIal structures,
device states and devclass flags. It is necessary to hold it when all
such datas are accessed. For the other operations, softc locking should
ensure enough protection to avoid races.
Newbus lock is automatically held when virtual operations on the device
and bus are invoked when loading the driver or when the suspend/resume
take place. For other 'spourious' operations trying to access/modify
the newbus topology, newbus lock needs to be automatically acquired and
dropped.
For the moment Giant is also acquired in some key point (modules subsystem)
in order to avoid problems before the 8.0 release as module handlers could
make assumptions about it. This Giant locking should go just after
the release happens.
Please keep in mind that the public interface can be expanded in order
to provide more support, if there are really necessities at some point
and also some bugs could arise as long as the patch needs a bit of
further testing.
Bump __FreeBSD_version in order to reflect the newbus lock introduction.
Reviewed by: ed, hps, jhb, imp, mav, scottl
No answer by: ariff, thompsa, yongari
Tested by: pho,
G. Trematerra <giovanni dot trematerra at gmail dot com>,
Brandon Gooch <jamesbrandongooch at gmail dot com>
Sponsored by: Yahoo! Incorporated
Approved by: re (ksmith)
requesting IDENTIFY from slave device first. This order is important
for proper cable type detection by master device.
PR: kern/136438
Approved by: re (kib)
modularize it so that new transports can be created.
Add a transport for SATA
Add a periph+protocol layer for ATA
Add a driver for AHCI-compliant hardware.
Add a maxio field to CAM so that drivers can advertise their max
I/O capability. Modify various drivers so that they are insulated
from the value of MAXPHYS.
The new ATA/SATA code supports AHCI-compliant hardware, and will override
the classic ATA driver if it is loaded as a module at boot time or compiled
into the kernel. The stack now support NCQ (tagged queueing) for increased
performance on modern SATA drives. It also supports port multipliers.
ATA drives are accessed via 'ada' device nodes. ATAPI drives are
accessed via 'cd' device nodes. They can all be enumerated and manipulated
via camcontrol, just like SCSI drives. SCSI commands are not translated to
their ATA equivalents; ATA native commands are used throughout the entire
stack, including camcontrol. See the camcontrol manpage for further
details. Testing this code may require that you update your fstab, and
possibly modify your BIOS to enable AHCI functionality, if available.
This code is very experimental at the moment. The userland ABI/API has
changed, so applications will need to be recompiled. It may change
further in the near future. The 'ada' device name may also change as
more infrastructure is completed in this project. The goal is to
eventually put all CAM busses and devices until newbus, allowing for
interesting topology and management options.
Few functional changes will be seen with existing SCSI/SAS/FC drivers,
though the userland ABI has still changed. In the future, transports
specific modules for SAS and FC may appear in order to better support
the topologies and capabilities of these technologies.
The modularization of CAM and the addition of the ATA/SATA modules is
meant to break CAM out of the mold of being specific to SCSI, letting it
grow to be a framework for arbitrary transports and protocols. It also
allows drivers to be written to support discrete hardware without
jeopardizing the stability of non-related hardware. While only an AHCI
driver is provided now, a Silicon Image driver is also in the works.
Drivers for ICH1-4, ICH5-6, PIIX, classic IDE, and any other hardware
is possible and encouraged. Help with new transports is also encouraged.
Submitted by: scottl, mav
Approved by: re
MAXPHYS. Current ataahci driver memory allocation scheme includes only
64 items in DMA S/G table, and so not guarantied to support transactions
with more then 252K data.
Approved by: re (kensmith)
MFC after: 2 weeks
