For PATA, 0xff status indicates empty port. For SATA, it depends on
how the controller emulates status register. On some controllers,
0xff is used to represent broken link or certain stage during reset.
libata currently deals SATA the same. This hasn't caused any problem
because problematic situations usually only occur after hotplug or
other link disruption events and libata blindly waited for the device
to spin up and settle after hotplug giving the link and device
whatever time to go through those stages.
libata is going to replace unconditional spinup wait with generic
timed sequence of resets, so not only getting 0xff handling right for
SATA is, well, the right thing to do, it's much more important now.
This patch makes the following changes.
* Make ata_bus_softreset() return -ENODEV if any of its wait fails
due to 0xff status.
* Fail soft/hardreset if status wait returns -ENODEV indicating 0xff
status while SStatus says the link is online. e.g. Reset fails if
status is 0xff after reset when SStatus reports the linke is online.
If SCR registers are not available, everything is the same as
before.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Add @deadline to prereset and reset methods and make them honor it.
ata_wait_ready() which directly takes @deadline is implemented to be
used as the wait function. This patch is in preparation for EH timing
improvements.
* ata_wait_ready() never does busy sleep. It's only used from EH and
no wait in EH is that urgent. This function also prints 'be
patient' message automatically after 5 secs of waiting if more than
3 secs is remaining till deadline.
* ata_bus_post_reset() now fails with error code if any of its wait
fails. This is important because earlier reset tries will have
shorter timeout than the spec requires. If a device fails to
respond before the short timeout, reset should be retried with
longer timeout rather than silently ignoring the device.
There are three behavior differences.
1. Timeout is applied to both devices at once, not separately. This
is more consistent with what the spec says.
2. When a device passes devchk but fails to become ready before
deadline. Previouly, post_reset would just succeed and let
device classification remove the device. New code fails the
reset thus causing reset retry. After a few times, EH will give
up disabling the port.
3. When slave device passes devchk but fails to become accessible
(TF-wise) after reset. Original code disables dev1 after 30s
timeout and continues as if the device doesn't exist, while the
patched code fails reset. When this happens, new code fails
reset on whole port rather than proceeding with only the primary
device.
If the failing device is suffering transient problems, new code
retries reset which is a better behavior. If the failing device is
actually broken, the net effect is identical to it, but not to the
other device sharing the channel. In the previous code, reset would
have succeeded after 30s thus detecting the working one. In the new
code, reset fails and whole port gets disabled. IMO, it's a
pathological case anyway (broken device sharing bus with working
one) and doesn't really matter.
* ata_bus_softreset() is changed to return error code from
ata_bus_post_reset(). It used to return 0 unconditionally.
* Spin up waiting is to be removed and not converted to honor
deadline.
* To be on the safe side, deadline is set to 40s for the time being.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
The Marvell IDE interface on my machine would hit a BUG_ON() in
lib/iomem.c because it was calling ata_pci_init_one() specifying just a
single port on the host, but that would actually end up trying to
initialize two ports, the second one with bogus information.
This fixes "ata_pci_init_one()" so that it actually passes down the
n_ports variable that it got from the low-level driver to the host
allocation routine ("ata_host_alloc_pinfo()"), which results in the ATA
layer actually having the correct port number information.
And in order to make it all work, I also needed to fix a few places that
had incorrectly hard-coded the fact that a host always had exactly two
ports (both ata_pci_init_bmdma() and ata_request_legacy_irqs() would
just always iterate over both ports).
Acked-by: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This is grubby, but all the ata drivers do it this way.
Would it not be better to do
#define ata_scsi_device_resume NULL
in libata.h, remove all those ifdefs?
(updated version, ug, ug)
Cc: Jeff Garzik <jeff@garzik.org>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Tejun Heo <htejun@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Further HPT37x changes
- No 66MHz 370/370A
- Remove dead special case check now we use the DPLL (as per the IDE driver)
Pointed out by Sergei
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Yes its no longer 3x2n but 3xxn, I can rename it if you want Jeff
- Don't reset both ports each time (Sergei)
- If we can't get a DPLL then abort entirely
- Use ioport access for clock (from drivers/ide)
- Add HPT371N support (from drivers/ide)
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
drivers/ata/libata-core.c: In function 'ata_hpa_resize':
drivers/ata/libata-core.c:986: warning: format '%lld' expects type 'long long int', but argument 5 has type 'u64'
drivers/ata/libata-core.c:986: warning: format '%lld' expects type 'long long int', but argument 6 has type 'u64'
drivers/ata/libata-core.c:990: warning: format '%lld' expects type 'long long int', but argument 4 has type 'u64'
drivers/ata/libata-core.c:990: warning: format '%lld' expects type 'long long int', but argument 5 has type 'u64'
drivers/ata/libata-core.c:1003: warning: format '%lld' expects type 'long long int', but argument 4 has type 'u64'
Also fix various 80-col bustage.
Cc: Jeff Garzik <jeff@garzik.org>
Cc: Tejun Heo <htejun@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Separate ATA_EHI_DID_RESET into ATA_EHI_DID_SOFTRESET and
ATA_EHI_DID_HARDRESET. ATA_EHI_DID_RESET is redefined as OR of the
two flags. This patch doesn't introduce any behavior change. This
will be used later to determine whether _SDD is necessary or not.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Russell King hit a case where quantisation errors accumulated such that
the cycle time was shorter than rather than equal to the active/recovery
time. The code already knows how to stretch times to fit the cycle time
but does not know about the reverse.
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
->cable_detect() used to be called on by the old ata_bus_probe() path.
Add invocation to ata_eh_revalidate_and_attach() right after IDENTIFYs
are done.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This is added by added by cff63dfceb52c564fe1ba5394d50ab7d599a11b9
- pata: cable methods.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
(S)ATA drives can be configured for "power-up in standby",
a mode whereby a specific "spin up now!" command is required
before the first media access.
Currently, a drive with this feature enabled can not be used at all
with libata, and once in this mode, the drive becomes a doorstop.
The older drivers/ide subsystem at least enumerates the drive,
so that it can be woken up after the fact from a userspace HDIO_*
command, but not libata.
This patch adds support to libata for the "power-up in standby"
mode where a "spin up now!" command (SET_FEATURES) is needed.
With this, libata will recognize such drives, spin them up,
and then re-IDENTIFY them if necessary to get a full/complete
set of drive features data.
Drives in this state are determined by looking for
special values in id[2], as documented in the current ATA specs.
Signed-off-by: Mark Lord <mlord@pobox.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Alan Cox <alan@redhat.com>
Add support for ignoring the BIOS HPA result (off by default) and setting
the disk to the full available size unless already frozen.
Tested with various platforms/disks and confirmed to work with the
Macintosh (which broke earlier) and ata_piix (breakage due to the LBA48
readback that Tejun fixed).
For normal users this brings us, I believe, to feature parity with old IDE
(and of course more featured in some areas too).
Signed-off-by: Jeff Garzik <jeff@garzik.org>
All drivers are converted to new init model. Kill probe_ent,
ata_device_add() and ata_pci_init_native_mode().
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Convert pdc_adma, pata_cs5520, pata_isapnp, pata_ixp4xx_cf,
pata_legacy, pata_mpc52xx, pata_mpiix, pata_pcmcia, pata_pdc2027x,
pata_platform, pata_qdi, pata_scc and pata_winbond to new init model.
* init_one()'s now follow more consistent init order
* cs5520 now registers one host with two ports, not two hosts. If any
of the two ports are disabled, it's made dummy as other drivers do.
Tested pdc_adma and pata_legacy. Both are as broken as before. The
rest are compile tested only.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Convert ahci, sata_sil, sata_sil24, sata_svw, sata_qstor, sata_mv,
sata_sx4, sata_vsc and sata_inic162x to new init model.
Now that host and ap are available during intialization, functions are
converted to take either host or ap instead of low level parameters
which were inevitable for functions shared between init and other
paths. This simplifies code quite a bit.
* init_one()'s now follow more consistent init order
* ahci_setup_port() and ahci_host_init() collapsed into
ahci_init_one() for init order consistency
* sata_vsc uses port_info instead of setting fields manually
* in sata_svw, k2_board_info converted to port_info (info is now in
port flags). port number is honored now.
Tested on ICH7/8 AHCI, jmb360, sil3112, 3114, 3124 and 3132.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Convert drivers which use ata_pci_init_native_mode() to new init
model. ata_pci_init_native_host() is used instead. sata_nv, sata_uli
and sata_sis are in this category.
Tested on nVidia Corporation CK804 Serial ATA Controller [10de:0054]
in both BMDMA and ADMA mode.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Convert sata_via and sata_promise to new init model. Both controllers
can have combined configuration (SATA + PATA) and used twisted
initialization method (modifying port in ->port_start) to overcome
probe_ent limitations.
This patch converts both drivers to new init model in which such
configuration is natively supported.
* promise: Combined pata port now uses separate port_info entry right
after the sata counterpart entry.
* promise: Controller configuration is discerned using ap->flags.
This simplifies init path and makes it look more like other LLDs.
* via: Both SATA and PATA ports in vt6421 are represented in their
own port_info structure.
Tested on PDC20375 (SATA150 TX2plus) [105a:3375] and PDC40775 (SATA
300 TX2plus) [105a:3d73]. Couldn't test via cuz my c3 won't boot the
current kernel.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
These will be used to convert LLDs to new init model.
* Add irq_handler field to port_info. In new init model, requesting
IRQ is LLD's responsibility and libata doesn't need to know about
irq_handler. Most LLDs can simply register their irq_handler but
some need different irq_handler depending on specific chip. The
added port_info->irq_handler field can be used by LLDs to select
the matching IRQ handler in such cases.
* Add ata_dummy_port_info.
* Implement ata_pci_prepare_native_host(), a helper to alloc ATA host,
acquire all resources and init the host in one go.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Convert native PCI host handling to alloc-init-register model. New
function ata_pci_init_native_host() follows the new init model and
replaces ata_pci_init_native_mode(). As there are remaining LLD
users, the old function isn't removed yet.
ata_pci_init_one() is reimplemented using the new function and now
fully converted to new init model.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Convert legacy PCI host handling to alloc-init-register model.
ata_init_legacy_host(), ata_request_legacy_irqs() and
ata_pci_init_bmdma() are separated out and follow the new init model.
The two legacy handling functions use separate ata_legacy_devres
instead of generic devm_* resources. This reduces devres overhead for
legacy hosts which was a bit high because it didn't use PCI/iomap
merged resoruces.
ata_pci_init_one() is rewritten in terms of the aboved functions but
native mode handling is still using the old method. Conversion will
be completed when native mode handling is updated.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Implement ata_host_alloc_pinfo() and ata_host_register(). These helpers
will be used in the following patches to adopt new init model.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Reorganize ata_host_alloc() and its subroutines into the following
three functions.
* ata_host_alloc() : allocates host and its ports. shost is not
registered automatically.
* ata_scsi_add_hosts() : allocates and adds shosts associated with an
ATA host. Used by ata_host_register().
* ata_host_register() : takes a fully initialized ata_host structure
and registers it to libata layer and probes it.
Only ata_host_alloc() and ata_host_register() are exported.
ata_device_add() is rewritten using the above functions. This patch
does not introduce any observable behavior change. Things worth
mentioning.
* print_id is assigned at registration time and LLDs are allowed to
overallocate ports and reduce host->n_ports during initialization.
ata_host_register() will throw away unused ports automatically.
* All SCSI host initialization stuff now resides in
ata_scsi_add_hosts() in libata-scsi.c, where it should be.
* ipr is now the only user of ata_host_init(). Either kill it by
converting ipr to use ata_host_alloc() and friends or rename and
move it to libata-scsi.c
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Separate out ata_host_start() from ata_device_add(). ata_host_start()
calls ->port_start on each port if available and freezes the port.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Don't embed ap inside shost. Allocate it separately and point it back
from shosts's hostdata. This makes port allocation more flexible and
allows regular ATA and SAS share host alloc/init paths.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Add PCI ID for new VIA chip. Original patch is from Maarten Vanraes.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Cc: Maarten Vanraes <maarten.vanraes@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
kill the following compile warning.
drivers/ata/libata-core.c:1786: warning: comparison of distinct pointer types lacks a cast
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
SB600 RAID and SB600 SATA is the same controller and share the
same PCI ID 0x4380. There is no such PCI ID 0x4381.
Signed-off-by: Conke Hu <conke.hu@gmail.com>
---------
Signed-off-by: Jeff Garzik <jeff@garzik.org>
->post_internal_cmd is simplified EH for internal commands. Its
primary mission is to stop the controller such that no rogue memory
access or other activities occur after the internal command is
released. It may provide error diagnostics by setting qc->err_mask
but this hasn't been a requirement.
To ignore SETXFER failure for CFA devices, libata needs to know
whether a command was failed by the device or for any other reason.
ie. internal command needs to get AC_ERR_DEV right.
This patch makes the following changes to AC_ERR_DEV handling and
->post_internal_cmd semantics to accomodate this need and simplify
callback implementation.
1. As long as the correct bits in the result TF registers are set,
there is no need to set AC_ERR_DEV explicitly. libata EH core
takes care of that for both normal and internal commands.
2. The only requirement for ->post_internal_cmd() is to put the
controller into quiescent state. It needs not to set any err_mask.
3. ata_exec_internal_sg() performs minimal error analysis such that
AC_ERR_DEV is automatically set as long as result_tf is filled
correctly.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Disabled port handling in ata_pci_init_native_mode() is slightly
broken in that it may end up using the wrong port_info. This patch
updates it such that disables ports are made dummy as done in the
legacy and other cases.
While at it, fix indentation in ata_resources_present().
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Move cross checking between port_map and cap.n_ports into
ahci_save_initial_config(). After save_initial_config is done,
hpriv->port_map is always setup properly.
Tested on JMB363, ICH7 and ICH8 (with dummy ports).
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
There are several registers which describe how the controller is
configured. These registers are sometimes implemented as r/w
registers which are configured by firmware and get cleared on
controller reset or after suspend/resume cycle. ahci saved and
restored those values inside ahci_reset_controller() which is a bit
messy and doesn't work over suspend/resume cycle.
This patch implements ahci_save/restore_initial_config(). The save
function is called during driver initialization and saves cap and
port_map to hpriv. The restore function is called after the
controller is reset to restore the initial values.
Sometimes the initial firmware values are inconsistent and need to be
fixed up. This is handled by ahci_save_initial_config(). For this,
there are two versions of saved registers. One to write back to the
hardware register, the other to use during driver operation. This is
necessary to keep ahci's behavior unchanged (write back fixed up
port_map while keeping cap as-is).
This patch makes ahci save the register values once before the first
controller reset, not after it's been reset. Also, the same stored
values are used written back after each reset, so the register values
are properly recovered after suspend/resume cycle.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Promise ATA ports should always be reset by pdc_reset_port()
when errors are detected, but the recent error reason decoding
update to sata_promise replaced that reset with a freeze.
This patch changes the error detection to do a reset again.
This makes the error decoding update safer, as it now only
adds error decoding without changing any other behaviour.
Signed-off-by: Mikael Pettersson <mikpe@it.uu.se>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Alan Cox <alan@redhat.com>
Correct missing modefilter (crash if BAR4 unassigned)
Use Cable Detect method
Wrap ->set_mode instead ready for ->post_set_mode removal
Maxtor errata as per Jeff Garzik report
Remove duplicated private udma_mask hacking
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Versus upstream as requested
Last of the trivial switches to cable_detect methods.
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
The READ/WRITE LONG commands are theoretically obsolete,
but the majority of drives in existance still implement them.
The WRITE_LONG and WRITE_LONG_ONCE commands are of particular
interest for fault injection testing -- eg. creating "media errors"
at specific locations on a disk.
The fussy bit is that these commands require a non-standard
sector size, usually 520 bytes instead of 512.
This patch adds support to libata for READ/WRITE LONG commands
issued via SG_IO/ATA_16.
Signed-off-by: Mark Lord <mlord@pobox.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
The Asus W5F laptop uses a short cable instead of the 80-wire style, and thus
needs to be in the ich_laptop special cases for correct detection and support
of UDMA/100 for the hard drive. I noticed this because I have the W5F laptop,
and was tracing apparent slowness.
Signed-off-by: Robin H. Johnson <robbat2@gentoo.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
A lot of noise because I had to rename the optidma_set_mode() method to
avoid confusion with the new ->set_mode() method that was added. Cable
detect side is pretty trivial.
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Alan Cox <number6@the-village.bc.nu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Reading from the ATA shadow registers while we are in ADMA mode may cause
undefined behavior. Don't read the ATA status register when completing
commands for this reason, it shouldn't be needed as the controller will
notify us if the command failed. Also, don't allow commands with result
taskfile requested to execute in ADMA mode, since that requires accessing
the shadow registers. We also still need to override tf_read since libata
will read the result taskfile on a command failure, and we need to go into
port register mode before allowing this.
Signed-off-by: Robert Hancock <hancockr@shaw.ca>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
It tries to spot when the slave is a mirror of the master and to fix up
problems that causes.
I've got two confirmations so far that this plus the "can fail set_xfer" patch
work for folks who had problems before. Also if you are unfortunate enough to
be running something like HAL then it'll automount the same disk twice for you
and corrupt it without the fix (aint that nice...)
Tested (successfully) by Komuro <komurojun-mbn@nifty.com>.
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
There was a rare report where SB600 reported SERR_INTERNAL and SRST
couldn't get it out of the failure mode. Hardreset on SERR_INTERNAL.
As the problem is intermittent, whether this fixes the problem or not
hasn't been verified yet, but hardresetting the channel on internal
error is a good idea anyway.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This patch adds much needed error reason decoding and
reporting to sata_promise. It's simplistic but should
log all relevant error info the controller provides.
Signed-off-by: Mikael Pettersson <mikpe@it.uu.se>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This patch changes sata_promise so that the PATA ports
on TX2plus chips are bound to the pdc_pata_ops structure.
This means that operations called from the SATA ops
structures don't need any SATA-vs-PATA tests any more.
Instead, operations that depend on a port being SATA or
PATA are separated into different procedures.
* pdc_cable_type() is split into a PATA version and a
SATA version
* pdc_error_handler() is split into a PATA version and a
SATA version, that both call a common version after
setting up the `hardreset' function pointer
* pdc_old_check_atapi_dma() is now only used for SATAI
ports, so is renamed to pdc_old_sata_check_atapi_dma()
and simplified
* pdc_sata_scr_{read,write}() are now only used for SATA
ports, so their is-not-SATA tests are removed
* pdc_port_start() is split into three procedures: a wrapper
which performs the ->ops adjustment on TX2plus PATA ports,
a procedure with the common code, and a procedure with
the SATA-specific code (this bit might be cleaned up by
Tejun's new init model)
Tested on 20619, 20575, and 20775 chips.
Signed-off-by: Mikael Pettersson <mikpe@it.uu.se>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
The recent change which moved cable detection from
pdc_pre_reset() to the new ->cable_detect hook only
added the hook for SATAII chips, leaving SATAI chips
and the 20619 without the hook. Fixed by this patch.
Signed-off-by: Mikael Pettersson <mikpe@it.uu.se>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Both old-IDE and libata should be able handle all controllers and
devices found using normal resource reservation methods.
This eliminates the awful, low-performing split-driver configuration
where old-IDE drove the PATA portion of a PCI device, in PIO-only mode,
and libata drove the SATA portion of the /same/ PCI device, in DMA mode.
Typically vendors would ship SATA hard drive / PATA optical
configuration, which would lend itself to slow (PIO-only) CD-ROM
performance.
For Intel users running in combined mode, it is now wholly dependent on
your driver choice (potentially link order, if you compile both drivers
in) whether old-IDE or libata will drive your hardware.
In either case, you will get full performance from both SATA and PATA
ports now, without having to pass a kernel command line parameter.
Signed-off-by: Jeff Garzik <jeff@garzik.org>
The previous commit erroneously noted that the !IORDY filter was turned
on. No true, that change was split out into this commit.
Originally authored and signed-off-by Alan Cox.
Signed-off-by: Jeff Garzik <jeff@garzik.org>
With Tejun having added adev->ap some time ago we can get rid of the
almost unused port being passed to mode filters. And while we are
doing filters, lets turn on the !IORDY filter as well.
Signed-off-by: Alan Cox <alan@redhat.com>
With some hand massaging from
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Now that we have ata_do_set_mode() available for drivers to use we don't
actually need ->post_set_mode() as the driver can wrap set_mode nicely
and do stuff before or after (eg PCMCIA needs before), so we can kill off
a method in all the structs
While I was at it I added kernel-doc to the function involved.
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This alone isn't sufficient to save the universe from prehistoric disks
and controllers but it is a first important step. Split off a separate
function to provide a mode filter when controller iordy is not available.
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This splits set_mode into do_set_mode and the wrapper so that a driver can
call the standard method inside its own. This in theory also obsoletes
->post_set_mode().
Signed-off-by: Alan Cox <alan@redhat.com>
Cc: Jeff Garzik <jeff@garzik.org>
Cc: Tejun Heo <htejun@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Drag pata_hpt37x kicking and screaming in the direction of
drivers/ide/pci/hpt366.c and all the work that Sergei has been doing
there. Plenty left to be done but this is a good snapshot for folks to
work on and to review
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Fix suspend/resume support
Write 0x5B to 0 not 0x5C
The former is important as we must kill the FIFO on a resume
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
We end up shifting a few bits of logic around in this driver but the
basic change is the same.
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This changeset revolves around the fact that all the SiS controllers have
the same enable bits, but differing cable detection methods. Previously
that meant each type had its own error_handler methods. Instead we can
now implement different ->cable_detect methods and share a single
error_handler which does the filtering by enable bits.
In addition we had some auto const arrays that should be static const. I'm
not sure if gcc already treats them intelligently but adding the static
will make sure.
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
There are two changes here. Firstly we switch to a cable detect method,
secondly the old code forgot to call ata_std_prereset() but somehow
managed to work anyway. Fix the missing call.
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
All patches authored and signed-off-by Alan Cox, sent on Mar 7, 2007.
I merely combined them all into a single patch.
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Added Support for Marvell 7042 Chip - 7042 has same capabilities & behavior
as 6042.
Signed-off-by: Thomas A. Morrison <tmorrison@empirix.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Support for the PCI CMD640 (not VLB)
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2.6.21-rc has horrible problems with libata and PATA cable types (and
thus speeds). This occurs because Tejun fixed a pile of other bugs and
we now do cable detect enforcement for drive side detection properly.
Unfortunately we don't do the process around cable detection right. Tejun
identified the problem and pointed to the right Annex in the spec, this patch
implements the rest of the needed changes.
We add a ->cable_detect() method called after the identify
sequence which allows a host to do host side detection at this point
should it wish, or to modify the results of the drive side identify.
This separate ->cable_detect method also cleans up a lot of code because
many drivers have their own error_handler methods which really just set
the cable type.
If there is no ->cable_detect method the cable type is left alone so a
driver setting it earlier (eg because it has the SATA flags set or
because it uses the old error_handler approach) will still do the right
thing (or at least the same thing) as before.
This patch simply adds the cable_detect method and helpers it doesn't use
them but other follow up patches will (ie Adrian please don't submit
patches to unexport them ;))
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Since commit:553c4aa630af7bc885e056d0436e4eb7f238579b
ata_pci_device_do_resume() can return error code, all callers was updated
except this one.
Signed-off-by: Monakhov Dmitriy <dmonakhov@openvz.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Warn the user if a drive's transfer rate is limited because of a 40-wire
cable detection.
Signed-off-by: Robert Hancock <hancockr@shaw.ca>
Cc: Jeff Garzik <jeff@garzik.org>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Resending, with s/printk/DPRINTK/ as pointed out by Alan.
Fix libata to perform CDB len validation per device
rather than per host. This way, validation still works
when we have a mix of 12-byte and 16-byte devices on
a common host interface.
Signed-off-by: Mark Lord <mlord@pobox.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
It used to be impossible to get from ata_device to ata_port but that is
no longer true. Various methods have been cleaned up over time but
dev_config still takes both and most users don't need both anyway. Tidy
this one up
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
The chips covered by sata_mv have a 32-bit DMA boundary they must not
cross, not a 64K boundary. We are merely limited to a 64K maximum
segment size. Therefore, the DMA scatter/gather table fill code can be
greatly simplified, and we need not cut in half the S/G table size as
reported to the SCSI layer.
Also, the driver forget to turn on 64-bit DMA at the PCI layer. All
other data structures (both hardware and software) have been prepped for
64-bit PCI DMA. It was simply never turned on. <fingers crossed> let's
see if it still works...
Signed-off-by: Jeff Garzik <jeff@garzik.org>
A small number of SiS setups require special handling (not many judging
by how long this dumb bug survived). A couple of Fedora 7 devel testers
hit an Oops on pata_sis loading which is caused by terminal confusion
between chipset as 'the chipset we have found' and chipset as 'array
iterator'
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
* 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/libata-dev:
libata: Limit ATAPI DMA to R/W commands only for TORiSAN DVD drives (take 3)
libata: Limit max sector to 128 for TORiSAN DVD drives (take 3)
libata: Clear tf before doing request sense (take 3)
libata: reorder HSM_ST_FIRST for easier decoding (take 3)
libata bugfix: preserve LBA bit for HDIO_DRIVE_TASK
2.6.21 fix lba48 bug in libata fill_result_tf()
This adds some NCQ blacklist entries taken from the Silicon Image 3124/3132
Windows driver .inf files. There are some confirming reports of problems
with these drives under Linux (for example http://lkml.org/lkml/2007/3/4/178)
so let's disable NCQ on these drives.
[ I'm personally starting to wonder whether we shouldn't disable NCQ by
default, and perhaps have a white-list. There seems to be a *lot* of
drives that do this wrong.. - Linus ]
Signed-off-by: Robert Hancock <hancockr@shaw.ca>
Acked-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
patch 4/4:
Limit ATAPI DMA to R/W commands only for TORiSAN DRD-N216 DVD-ROM drives
(http://bugzilla.kernel.org/show_bug.cgi?id=6710)
Signed-off-by: Albert Lee <albertcc@tw.ibm.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
patch 3/4:
The TORiSAN drive locks up when max sector == 256.
Limit max sector to 128 for the TORiSAN DRD-N216 drives.
(http://bugzilla.kernel.org/show_bug.cgi?id=6710)
Signed-off-by: Albert Lee <albertcc@tw.ibm.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
patch 2/4:
Clear tf before doing request sense.
This fixes the AOpen 56X/AKH timeout problem.
(http://bugzilla.kernel.org/show_bug.cgi?id=8244)
Signed-off-by: Albert Lee <albertcc@tw.ibm.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Preserve the LBA bit in the DevSel/Head register for HDIO_DRIVE_TASK.
Signed-off-by: Mark Lord <mlord@pobox.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Current 2.6.21 libata does the following:
void ata_tf_read(struct ata_port *ap, struct ata_taskfile *tf)
{
struct ata_ioports *ioaddr = &ap->ioaddr;
tf->command = ata_check_status(ap);
...
if (tf->flags & ATA_TFLAG_LBA48) {
iowrite8(tf->ctl | ATA_HOB, ioaddr->ctl_addr);
tf->hob_feature = ioread8(ioaddr->error_addr);
...
}
}
...
static void fill_result_tf(struct ata_queued_cmd *qc)
{
struct ata_port *ap = qc->ap;
ap->ops->tf_read(ap, &qc->result_tf);
qc->result_tf.flags = qc->tf.flags;
}
Based on this, those last two statements fill_result_tf()
appear to me to be in the wrong order, in that the tf->flags
are uninitialized at the point where tf_read() is invoked.
So for lba48 commands, tf_read() won't be reading back the
full lba48 register contents..
Correct?
This patch corrects fill_result_tf() so that the flags
get copied to result_tf before they are used by tf_read().
Signed-off-by: Mark Lord <mlord@pobox.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
I've seen this several times on this drive, completely reproducible.
Once it has hung, power needs to be cut from the drive to recover it, a
simple reboot is not enough. So I'd suggest disabling NCQ on this
drive.
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Acked-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
With this applied, my machine has stopped all those painful messages.
dmesg now says :
root@riri:/Kernels# dmesg | grep LBA
ata1.00: 490234752 sectors, multi 0: LBA48 NCQ (not used)
ata2.00: 640 sectors, multi 1: LBA
ata3.00: 490234752 sectors, multi 0: LBA48 NCQ (not used)
Signed-off-by: Paul Rolland <rol@as2917.net>
Acked-by: Alan Cox <alan@redhat.com>
Cc: Jeff Garzik <jeff@garzik.org>
Cc: Tejun Heo <htejun@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
In LBA48 mode we have to help the controller to get anything to work. The
chip provides a register giving word counts meant for ATAPI use which we
can use. However we need to load the count in words not bytes..
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
For drive side cable detection to work correctly, drives need to be
identified backwards such that the slave device releases PDIAG- before
the mater drive tries to detect cable type. ata_bus_probe() was fixed
by commit f31f0cc2f0 but the new EH path
wasn't fixed. This patch makes new EH path do IDENTIFY backwards.
ata_dev_configure() for new devices are still performed master first.
This is to keep the detection messages in forward order.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
There is a HW issue in ATI SB600 SATA that PxSERR.E should not be
set on some conditions, for example, when there is no media in SATA
CD/DVD drive or media is not ready, AHCI controller fails to execute
ATAPI commands and reports PORT_IRQ_TF_ERR, but ATI SB600 SATA
controller sets PxSERR.E at the
same time, which is not necessary.
This patch is just to ignore the INTERNAL ERROR in such case.
Without this patch, ahci error handler will report many errors as
below:
----------- cut from dmesg -----------
ata9: soft resetting port
ata9: SATA link up 1.5 Gbps (SStatus 113 SControl 300)
ata9.00: configured for UDMA/33
ata9: EH complete
ata9.00: exception Emask 0x40 SAct 0x0 SErr 0x800 action 0x2
ata9.00: (irq_stat 0x40000001)
ata9.00: cmd a0/00:00:00:00:20/00:00:00:00:00/a0 tag 0 cdb 0x0 data 0
res 51/24:03:00:00:20/00:00:00:00:00/a0 Emask 0x40 (internal error)
ata9: soft resetting port
ata9: SATA link up 1.5 Gbps (SStatus 113 SControl 300)
ata9.00: configured for UDMA/33
ata9: EH complete
ata9.00: exception Emask 0x40 SAct 0x0 SErr 0x800 action 0x2
ata9.00: (irq_stat 0x40000001)
ata9.00: cmd a0/01:00:00:00:00/00:00:00:00:00/a0 tag 0 cdb 0x43 data 12 in
res 51/24:03:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error)
-------- end cut ---------
Signed-off-by: Conke Hu <conke.hu@amd.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Tejun Heo