ata_host_detach() detaches an attached port and shouldn't be called on
a port which hasn't been attached yet. pata_legacy incorrectly calls
ata_host_detach() on unattached port after initialization failure
causing oops. Fix it.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Arjan van de Ven <arjan@infradead.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
pp is never used again in this function, no need to declare a
new one.
drivers/ata/sata_mv.c:1545:24: warning: symbol 'pp' shadows an earlier one
drivers/ata/sata_mv.c:1501:22: originally declared here
drivers/ata/sata_mv.c:1553:24: warning: symbol 'pp' shadows an earlier one
drivers/ata/sata_mv.c:1501:22: originally declared here
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
drivers/ata/sata_promise.c:546:15: warning: symbol 'len' shadows an earlier one
drivers/ata/sata_promise.c:538:6: originally declared here
len is set again immediately after the loop, so this is safe.
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
drivers/ata/ata_piix.c:1655:8: warning: symbol 'rc' shadows an earlier one
drivers/ata/ata_piix.c:1616:6: originally declared here
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
rc is used to test the return value and possibly return an error.
No need to redeclare inside the loop.
drivers/ata/libata-core.c:7089:7: warning: symbol 'rc' shadows an earlier one
drivers/ata/libata-core.c:7030:9: originally declared here
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
When the sata_mv driver is used as a platform driver,
mv_create_dma_pools() is never called so it fails when trying
to alloc in mv_pool_start().
Signed-off-by: Byron Bradley <byron.bbradley@gmail.com>
Acked-by: Mark Lord <mlord@pobox.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Forcibly set more of the configuration at init time. This seems to fix at
least one problem reported. We don't know what most of these bits do, but
we do know what windows stuffs there.
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Some controllers (VIA CX700) raise device error on SETXFER even after
mode configuration succeeded. Update ata_dev_set_mode() such that
device error is ignored if transfer mode is configured correctly. To
implement this, device is revalidated even after device error on
SETXFER.
This fixes kernel bugzilla bug 8563.
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 patch fixes the following section mismatches:
<-- snip -->
...
WARNING: drivers/ata/built-in.o(.text+0x15072): Section mismatch in reference from the function piix_init_one() to the function .devinit.text:piix_init_sata_map()
WARNING: drivers/ata/built-in.o(.text+0x150dd): Section mismatch in reference from the function piix_init_one() to the function .devinit.text:piix_init_pcs()
WARNING: drivers/ata/built-in.o(.text+0x150e5): Section mismatch in reference from the function piix_init_one() to the function .devinit.text:piix_init_sidpr()
WARNING: drivers/ata/built-in.o(.text+0x15107): Section mismatch in reference from the function piix_init_one() to the function .devinit.text:piix_check_450nx_errata()
...
<-- snip -->
Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Maybe for the trivial tree...
sata_via.c has PATA support since:
d73f30e1c9
sata_via: PATA support
AFAICS so the TODO list is no longer true.
Signed-off-by: Jeff Garzik <jeff@garzik.org>
The HITACHI HDS7250SASUN500G and HITACHI HDS7225SBSUN250 drives
do not need to be blacklisted, the NCQ problem has been resolved
with the "sata_nv: fix for completion handling" patch.
Signed-off-by David Milburn <dmilburn@redhat.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This fixes some problems with ATAPI devices on nForce4 controllers in ADMA mode
on systems with memory located above 4GB. We need to delay setting the 64-bit
DMA mask until the PRD table and padding buffer are allocated so that they don't
get allocated above 4GB and break legacy mode (which is needed for ATAPI
devices). Also, if either port is in ATAPI mode we need to set the DMA mask
for the PCI device to 32-bit to ensure that the IOMMU code properly bounces
requests above 4GB, as it appears setting the bounce limit does not guarantee
that we will not try to map requests above this point.
Reported to fix https://bugzilla.redhat.com/show_bug.cgi?id=351451
Signed-off-by: Robert Hancock <hancockr@shaw.ca>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
mips:
drivers/ata/sata_mv.c: In function `mv_port_free_dma_mem':
drivers/ata/sata_mv.c:1080: error: implicit declaration of function `dma_pool_free'
Cc: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
qc->n_iter was used for libata's own sg walking before sg chaining
replaced it. During conversion, the field and its usage in sata_fsl
were left behind. Kill the filed and update sata_fsl.
tj: This was part of James's libata-use-block-layer-padding patch.
Separated out by me.
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Signed-off-by: Tejun Heo <htejun@gmail.com>
Cc: Li Yang <leoli@freescale.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
AHCI uses CAP.NP to indicate the number of ports and PI to tell which
ports are enabled. The only requirement is that the number of ports
indicated by CAP.NP should equal or be higher than the number of
enabled ports in PI.
CAP.NP and PI carry duplicate information and there have been some
interesting cases. Some early AHCI controllers didn't set PI at all
and just implement from port 0 to CAP.NP. An ICH8 board which wired
four out of six available ports had 3 (4 ports) for CAP.NP and 0x33
for PI. While ESB2 has less bits set in PI than the value in CAP.NP.
Till now, ahci driver assumed that PI is invalid if it doesn't match
CAP.NP exactly. This violates AHCI standard and the driver ends up
accessing unmimplemented ports on ESB2.
This patch updates CAP.NP and PI handling such that PI can have less
number of bits set than indicated in CAP.NP and the highest port is
determined as the maximum port of what CAP.NP and PI indicate.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Cc: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Marvell's Orion SoC includes SATA controllers based on Marvell's
PCI-to-SATA 88SX controllers. This patch extends the libATA sata_mv
driver to support those controllers.
[edited to use linux/ata_platform.h -jg]
Signed-off-by: Saeed Bishara <saeed@marvell.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
This sets the segment size limit properly via pci_set_dma_max_seg_size
and remove blk_queue_max_segment_size because scsi-ml calls it.
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: Jeff Garzik <jeff@garzik.org>
Cc: James Bottomley <James.Bottomley@steeleye.com>
Acked-by: Jens Axboe <jens.axboe@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/pci-2.6: (64 commits)
PCI: make pci_bus a struct device
PCI: fix codingstyle issues in include/linux/pci.h
PCI: fix codingstyle issues in drivers/pci/pci.h
PCI: PCIE ASPM support
PCI: Fix fakephp deadlock
PCI: modify SB700 SATA MSI quirk
PCI: Run ACPI _OSC method on root bridges only
PCI ACPI: AER driver should only register PCIe devices with _OSC
PCI ACPI: Added a function to register _OSC with only PCIe devices.
PCI: constify function pointer tables
PCI: Convert drivers/pci/proc.c to use unlocked_ioctl
pciehp: block new requests from the device before power off
pciehp: workaround against Bad DLLP during power off
pciehp: wait for 1000ms before LED operation after power off
PCI: Remove pci_enable_device_bars() from documentation
PCI: Remove pci_enable_device_bars()
PCI: Remove users of pci_enable_device_bars()
PCI: Add pci_enable_device_{io,mem} intefaces
PCI: avoid save the same type of cap multiple times
PCI: correctly initialize a structure for pcie_save_pcix_state()
...
This patch converts users of pci_enable_device_bars() to the new
pci_enable_device_{io,mem} interface.
The new API fits nicely, except maybe for the QLA case where a bit of
code re-organization might be a good idea but I prefer sticking to the
simple patch as I don't have hardware to test on.
I'll also need some feedback on the cs5520 change.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Robin Getz <robin.getz@analog.com>
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This patch is based on an original patch from Kuan Luo of NVIDIA,
posted under subject "fixed a bug of adma in rhel4u5 with HDS7250SASUN500G".
His description follows. I've reworked it a bit to avoid some unnecessary
repeated checks but it should be functionally identical.
"The patch is to solve the error message "ata1: CPB flags CMD err,
flags=0x11" when testing HDS7250SASUN500G in rhel4u5.
I tested this hd in 2.6.24-rc7 which needed to remove the mask in
blacklist to run the ncq and the same error also showed up.
I traced the bug and found that the interrupt finished a command (for
example, tag=0) when the driver got that adma status is
NV_ADMA_STAT_DONE and cpb->resp_flags is NV_CPB_RESP_DONE.
However, For this hd, the drive maybe didn't clear bit 0 at this moment.
It meaned the hardware had not completely finished the command.
If at the same time the driver freed the command(tag 0) and sended
another command (tag 0), the error happened.
The notifier register is 32-bit register containing notifier value.
Value is bit vector containing one bit per tag number (0-31) in
corresponding bit positions (bit 0 is for tag 0, etc). When bit is set
then ADMA indicates that command with corresponding tag number completed
execution.
So i added the check notifier code. Sometimes i saw that the notifier
reg set some bits , but the adma status set NV_ADMA_STAT_CMD_COMPLETE
,not NV_ADMA_STAT_DONE. So i added the NV_ADMA_STAT_CMD_COMPLETE check
code."
Signed-off-by: Robert Hancock <hancockr@shaw.ca>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
The integrated SATA controller is connected directly to the SoC's
internal bus, not via PCI interface. this patch removes the dependency
on the PCI interface.
Signed-off-by: Saeed Bishara <saeed@marvell.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Remove some obsolete comments, and bump up the driver version number.
Signed-off-by: Mark Lord <mlord@pobox.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This driver currently has no need for the .post_internal_cmd op.
So get rid of it, to save unnecessary transitions between EDMA and non-EDMA modes.
Signed-off-by: Mark Lord <mlord@pobox.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Final changes to actually turn on NCQ in the driver for GEN_II/IIE hardware.
Signed-off-by: Mark Lord <mlord@pobox.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
In preparation for supporting NCQ, we must allocate separate SG tables
for each command tag, rather than just a single table per port as before.
Gen-I hardware cannot do NCQ, though, so we still allocate just a single
table for that, but populate it in all 32 slots to avoid special-cases
elsewhere in hotter paths of the code.
Signed-off-by: Mark Lord <mlord@pobox.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This patch adds the Intel ICH10 IDE mode SATA Controller DeviceID's.
Signed-off-by: Jason Gaston <jason.d.gaston@intel.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This patch adds the Intel ICH10 SATA RAID Controllers DeviceID's.
Signed-off-by: Jason Gaston <jason.d.gaston@intel.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Create host-owned DMA memory pools, for use in allocating/freeing per-port
command/response queues and SG tables. This gives us a way to guarantee we
meet the hardware address alignment requirements, and also reduces memory that
might otherwise be wasted on alignment gaps.
Signed-off-by: Mark Lord <mlord@pobox.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
The GenII chips have only 8-bits for the sector_count field when performing NCQ.
Add a dev_config method to restrict this when necessary, taking care not to
override any other restriction already in place (likely none, but someday.. ?).
Signed-off-by: Mark Lord <mlord@pobox.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Simplify tag handling by using the cid/hqtag field instead of ioid,
as recommended by Marvell.
Signed-off-by: Mark Lord <mlord@pobox.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
An extra EDMA config bit is required for NCQ operation.
So set/clear it as needed, and cache current setting in port_priv.
For now though, it will always be "off" (0).
Signed-off-by: Mark Lord <mlord@pobox.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Simplify and fix EDMA configuration setup to match Marvell specificiations.
The chip documentation gives a specific (re)init sequence, which we now follow.
Signed-off-by: Mark Lord <mlord@pobox.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Use naming consistent with elsewhere in this driver.
This will keep things less confusing when we later add "hc_mmio" in this function.
Signed-off-by: Mark Lord <mlord@pobox.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
The chips can handle many transient errors internally without a software IRQ.
We now mask/ignore those interrupts here. This is necessary for NCQ, later on.
Signed-off-by: Mark Lord <mlord@pobox.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
A hard reset is necessary after hotplug events.
Only clear the error irq bits that were set on entry.
Signed-off-by: Mark Lord <mlord@pobox.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
The documentation for ata_data_xfer and ata_data_xfer_noirq had the 'rw'
parameter named 'write_data'.
Signed-off-by: Linus Nilsson <lajnold@acc.umu.se>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
The mpc8315 shares the same SATA controller as the mpc837x,
and likelihood is that future SoCs from Freescale will also.
Signed-off-by: Jerry Huang <Chang-Ming.Huang@freescale.com>
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Update MPC5200 drivers to also look for compatible properties in the
form "fsl,mpc5200-*" to better conform to open firmware generic names
recommended practice as published here:
http://www.openfirmware.org/1275/practice/gnames/gnamv14a.html
This patch should *not* break compatibility with older device trees
which do not use the 'fsl,' prefix. The drivers will still bind against
the older names also.
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6: (200 commits)
[SCSI] usbstorage: use last_sector_bug flag universally
[SCSI] libsas: abstract STP task status into a function
[SCSI] ultrastor: clean up inline asm warnings
[SCSI] aic7xxx: fix firmware build
[SCSI] aacraid: fib context lock for management ioctls
[SCSI] ch: remove forward declarations
[SCSI] ch: fix device minor number management bug
[SCSI] ch: handle class_device_create failure properly
[SCSI] NCR5380: fix section mismatch
[SCSI] sg: fix /proc/scsi/sg/devices when no SCSI devices
[SCSI] IB/iSER: add logical unit reset support
[SCSI] don't use __GFP_DMA for sense buffers if not required
[SCSI] use dynamically allocated sense buffer
[SCSI] scsi.h: add macro for enclosure bit of inquiry data
[SCSI] sd: add fix for devices with last sector access problems
[SCSI] fix pcmcia compile problem
[SCSI] aacraid: add Voodoo Lite class of cards.
[SCSI] aacraid: add new driver features flags
[SCSI] qla2xxx: Update version number to 8.02.00-k7.
[SCSI] qla2xxx: Issue correct MBC_INITIALIZE_FIRMWARE command.
...
Hugh Dickens noticed that SMART commands issued from user space can
end up corupting memory. The problem occurs if the buffer used to
read data spans two pages. The reason is that the PIO sector routines
in libata are expecting physically contiguous pages when they do
sector operations, so the left overs on the second page go into the
next physically adjacent page rather than the next page in the sg
mapping.
Fix this by enforcing strict 512 byte alignment on all buffers from
userspace.
Acked-by: Hugh Dickins <hugh@veritas.com>
Acked-by: Jeff Garzik <jeff@garzik.org>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
drivers/ata/sata_fsl.c: In function 'sata_fsl_fill_sg':
drivers/ata/sata_fsl.c:337: error: redeclaration of 'si' with no linkage
drivers/ata/sata_fsl.c:326: error: previous declaration of 'si' was here
Reported-by: Olof Johansson <olof@lixom.net>
Cc: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This puts winbond VLB in with the other ISA/VLB support and means we can
lose pata_winbond.c. With all the VLB/ISA probe in one space (and out of
the core libata) this makes legacy probing work sanely.
Also switch to devm_ for resource handling on the ports post probe
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Minor tidying up. Only real change is to return UNK not 80 wire when we
don't know the cable type. This didn't use to matter but with Tejun's
reworking of cable detection it may.
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
ata_irq is always assigned so does not need to be initialised to zero.
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
ATA_ECAT_DUBIOUS_BASE was too high by one and thus all DUBIOUS error
categorizations were wrong. This passed test because only ATA_BUS and
UNK_DEV were used during testing and the ones after them - ATA_BUS and
an overflowed entry - behaved similarly.
This patch fixes the problem by adding DUBIOUS_NONE category and use
it as base.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Factor out AHCI enabling into ahci_enable_ahci() and enabling AHCI
before reading CAP in ahci_save_initial_config() as the spec requires
enabling AHCI mode before accessing any other registers.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
For ICH8, SCRs can be accessed using index and data register pair
located at BAR 5. This patch implements support for it such that PHY
status, errors and hardreset are available for those controllers.
This is the only case where two devices on a PATA channel have access
to SCRs and creates a unique problem of mapping two SCRs to one link.
Note that this is different from PMP case in that they aren't quite
separate links - e.g. softreset resets both devices.
This problem is worked around by merging the SCR values. To upper
layer, it looks like there is a single link with one set of SCRs but
with two devices. This works well enough for PHY event, error
reporting and hardreset.
Supporting hardreset is important because in rare cases SATA devices
fail to recover without it after PHY errors.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
ata_piix requires more configuration during initialization than most
other SFF compliant controllers and one-go initialzation with
ata_pci_one() is too rigid.
This patch converts ata_piix to use two step prepare - activate
initialization used by other more advanced controllers. This
conversion brings the happy side effect of enabling PCI device before
accessing PCI configuration registers. Other than that, there
shouldn't be any behavior change.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Factor out ata_pci_activate_sff_host() from ata_pci_one(). This does
about the same thing as ata_host_activate() but needs to be separate
because SFF controllers use different and multiple IRQs in legacy
mode.
This will be used to make SFF LLD initialization more flexible.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
Cc: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Update the legacy driver so it can handle VLB ports nicely, and has an
internal structure for nailing new ISA/VLB forms in. Anyone got an ALI14xx
and a spare day ;)
Also adds an "all" parameter so you can load this driver after all the PCI
ones in a boot time kernel and tell it to grab anything ST412 compatible
even if it is an unknown PCI device. That allows libata to offer the same
"just get me a disk somehow" fallback that old IDE did.
Obsoletes pata_qdi.
Signed-off-by: Alan Cox <alan@redhat.com>
Cc: Tejun Heo <htejun@gmail.com>
Cc: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
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>
drivers/spi/Kconfig:156:warning: 'select' used by config symbol 'SPI_PXA2XX' refers to undefined symbol 'PXA_SSP'
drivers/ata/pata_winbond.c: In function 'winbond_data_xfer':
drivers/ata/pata_winbond.c:109: error: 'read' undeclared (first use in this function)
drivers/ata/pata_winbond.c:109: error: (Each undeclared identifier is reported only once
drivers/ata/pata_winbond.c:109: error: for each function it appears in.)
drivers/ata/pata_winbond.c:123: warning: 'return' with a value, in function returning void
drivers/ata/pata_winbond.c: At top level:
drivers/ata/pata_winbond.c:162: warning: initialization from incompatible pointer type
distcc[29718] ERROR: compile drivers/ata/pata_winbond.c on bix/8 failed
make[1]: *** [drivers/ata/pata_winbond.o] Error 1
make: *** [drivers/ata/pata_winbond.o] Error 2
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>
While merging data_xfer prototype change, pata_pcmcia was left out.
Convert it.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
libata-sff code used DRV_NAME which is hardcoded to "libata" when
requesting resources. Use dev_driver_string() such that low level
driver names are used in resource listing.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Kill PIIX_FLAG_SCR, PIIX_PORT_ENABLED and PIIX_PORT_PRESENT. These
are unused.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
ata_port_queue_task() served a single user: ata_pio_task()
Rename to ata_pio_queue_task() and un-export it, as nobody outside of
libata-core.c uses it.
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Some it821x RAID firmwares return 0 for the err return off both devices.
A similar issue occurs with the slave returning 0 not 1 if you plug a
gigabyte sata ramdisk into a controller that fakes two SATA ports as
master/slave on an SFF channel.
The patch does the following
- Allow the 'failed diagnostics' case on both master and slave
- Move the HORKAGE_DIAGNOSTIC check after ->dev_config
This second change also allows IT821x to fix up a problem where we report
drive diagnostic failures when in fact the drive is fine but the
microcontroller firmware doesn't appear to get it right. IT821x clears
the flag again to avoid giving the user bogus warnings about their disk.
The other IT821x change is a bit ugly, we slightly abuse the cable type
hook to fiddle with the identify data for the devices. We could add a new
hook for this but as we have only one offender and no more seeming likely
it seems better to keep libata-core clean.
Please let this sit in -mm briefly, just in case the relaxed checking
breaks some other emulated interface.
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
qc->nbytes didn't use to include extra buffers setup by libata core
layer and my be odd. This patch makes qc->nbytes include any extra
buffers setup by libata core layer and guaranteed to be aligned on 4
byte boundary.
This value is to be used to program the host controller. As this
represents the actual length of buffer available to the controller and
the controller must be able to deal with short transfers for ATAPI
commands which can transfer variable length, this shouldn't break any
controllers while making problems like rounding-down and controllers
choking up on odd transfer bytes much less likely.
The unmodified value is stored in new field qc->raw_nbytes.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
libata used private sg iterator to handle padding sg. Now that sg can
be chained, padding can be handled using standard sg ops. Convert to
chained sg.
* s/qc->__sg/qc->sg/
* s/qc->pad_sgent/qc->extra_sg[]/. Because chaining consumes one sg
entry. There need to be two extra sg entries. The renaming is also
for future addition of other extra sg entries.
* Padding setup is moved into ata_sg_setup_extra() which is organized
in a way that future addition of other extra sg entries is easy.
* qc->orig_n_elem is unused and removed.
* qc->n_elem now contains the number of sg entries that LLDs should
map. qc->mapped_n_elem is added to carry the original number of
mapped sgs for unmapping.
* The last sg of the original sg list is used to chain to extra sg
list. The original last sg is pointed to by qc->last_sg and the
content is stored in qc->saved_last_sg. It's restored during
ata_sg_clean().
* All sg walking code has been updated. Unnecessary assertions and
checks for conditions the core layer already guarantees are removed.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Cc: Jens Axboe <jens.axboe@oracle.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
ATA_QCFLAG_DMAMAP was a bit peculiar in that it got set during qc
initialization and cleared if DMA mapping wasn't necessary. Make it
more straight forward by making the following changes.
* Don't set it during initialization. Set it after DMA is actually
mapped.
* Add BUG_ON() to guarantee that there is data to transfer if DMAMAP
is set. This always holds for the current code. The BUG_ON() is
for docummentation and sanity check.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
With atapi_request_sense() converted to use sg, there's no user of
non-sg interface. Kill non-sg interface.
* ATA_QCFLAG_SINGLE and ATA_QCFLAG_SG are removed. ATA_QCFLAG_DMAMAP
is used instead. (this way no LLD change is necessary)
* qc->buf_virt is removed.
* ata_sg_init_one() and ata_sg_setup_one() are removed.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Cc: Rusty Russel <rusty@rustcorp.com.au>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Depending on how many bytes are transferred as a unit, PIO data
transfer may consume more bytes than requested. Knowing how much
data is consumed is necessary to determine how much is left for
draining. This patch update ->data_xfer such that it returns the
number of consumed bytes.
While at it, it also makes the following changes.
* s/adev/dev/
* use READ/WRITE constants for rw indication
* misc clean ups
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
ATA_PROT_ATAPI_* are ugly and naming schemes between ATA_PROT_* and
ATA_PROT_ATAPI_* are inconsistent causing confusion. Rename them to
ATAPI_PROT_* and make them consistent with ATA counterpart.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Treat zero xfer length as HSM violation. While at it, add
unlikely()'s to ATAPI ireason and transfer length checks.
tj: Formatted patch and added unlikely()'s.
Signed-off-by: Albert Lee <albertcc@tw.ibm.com>
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
atapi_request_sense() is now the only left user of ata_sg_init_one().
Convert it to use sg interface.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Cc: Rusty Russel <rusty@rustcorp.com.au>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
I missed one while converting to ata_is_*() protocol test helpers.
Convert it. Pointed out by Jeff Garzik.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
WARNING: line over 80 characters
#70: FILE: drivers/ata/pata_hpt37x.c:850:
+ struct pci_dev *pdev_0 = pci_get_slot(pdev->bus, pdev->devfn - 1);
ERROR: else should follow close brace '}'
#78: FILE: drivers/ata/pata_hpt37x.c:858:
+ }
+ else
total: 1 errors, 1 warnings, 100 lines checked
Your patch has style problems, please review. If any of these errors
are false positives report them to the maintainer, see
CHECKPATCH in MAINTAINERS.
Please run checkpatch prior to sending patches
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>
drivers/ata/libata-eh.c: In function `ata_port_pbar_desc':
drivers/ata/libata-eh.c:215: warning: long long unsigned int format, long unsigned int arg (arg 4)
Cc: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Cable detection on NV PATA hosts isn't implemented and the CBLID-
cable isn't wired according to the sepc either, so both host-side and
generic drive-side cable detections are broken. Till now,
nv_cable_detect() relied on peeking BIOS and ACPI configurations to
upgrade to 80C but this often results in misdetection of 40C cable as
80C. Also, the original implementation was broken in that by the time
BIOS configuration is read it has already been cleared by programming
PIO0 during reset.
This patch reimplements NV mode selection such that...
* BIOS configuration value is stored during driver attach and restored
on detach.
* Cable type is fixed to ATA_CBL_PATA_IGN and mode selection is soley
done by nv_mode_filter() which peeks both BIOS and ACPI
configurations and filter accordingly.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Reimplement ata_acpi_cbl_80wire() using ata_acpi_gtm_xfermask() and
while at it relocate the function below ata_acpi_gtm_xfermask().
New ata_acpi_cbl_80wire() implementation takes @gtm, in both pata_via
and pata_amd, use the initial GTM value. Both are trying to peek
initial BIOS configuration, so using initial caching value makes
sense. This fixes ACPI part of cable detection in pata_amd which
previously always returned 0 because configuring PIO0 during reset
clears DMA configuration.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
libata-acpi is using separate timing tables for transfer modes
although libata-core has the complete ata_timing table. Implement
ata_timing_cycle2mode() to look for matching mode given transfer type
and cycle duration and use it in libata-acpi and pata_acpi to replace
private timing tables.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
ata_acpi_gtm_xfermask() as separated out from pacpi_discover_modes()
has various bugs. Fix them.
* The wrong comparison operator is used when finding for matching
cycle resulting totally bogus result.
* With the comparion operator fixed, boundary condtion handling is
clumsy.
* Setting of any DMA mask bit set all bits in PIO mask.
* MWDMA and UDMA blocks are swapped.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Finding out matching transfer mode from ACPI GTM values is useful for
other purposes too. Separate out the function and timing tables from
pata_acpi::pacpi_discover_modes().
Other than checking shared-configuration bit after doing
ata_acpi_gtm() in pacpi_discover_modes() which should be safe, this
patch doesn't introduce any behavior change.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Separate controller IDs into a separate enum as Jeff requested.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Make pdc_atapi_pkt() use values from qc->tf instead of creating its
own. This is to ease future ATAPI handling changes.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Cc: Mikael Pettersson <mikpe@it.uu.se>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
ATA_CBL_PATA_UNK indicates that the cable type can't be determined
from the host side and might be either 80c or 40c. libata applies
drive or other generic limit in this case. However, there are
controllers where both host and drive side detections are
misimplemented and the driver has to rely solely on private method -
peeking BIOS or ACPI configuration or using some other private
mechanism.
This patch adds ATA_CBL_PATA_IGN which tells libata to ignore the
cable type completely and just let the LLD determine the transfer mode
via host transfer mode masks and ->mode_filter().
Signed-off-by: Tejun Heo <htejun@gmail.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Jeff says xfer_mask is unsigned long not unsigned int. Convert all
xfermask fields and handling functions to deal with unsigned longs.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
ata_id_to_dma_mode() isn't quite generic. The function is basically
privately implemented ata_id_xfermask() combined with hardcoded mode
printing and configuration which are specific to ata_generic.
Kill the function and open code it in generic_set_mode() using generic
xfermode handling functions.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
* s/ATA_BITS_(PIO|MWDMA|UDMA)/ATA_NR_\1_MODES/g
* Consistently use 0xff to indicate invalid transfer mode (0x00 is
valid for PIO_SLOW).
* Make ata_xfer_mode2mask() return proper mode mask instead of just
the highest bit.
* Sort ata_timing table in increasing xfermode order and update
ata_timing_find_mode() accordingly.
This patch doesn't introduce any behavior change.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Export the following xfermode related functions.
* ata_pack_xfermask()
* ata_unpack_xfermask()
* ata_xfer_mask2mode()
* ata_xfer_mode2mask()
* ata_xfer_mode2shift()
* ata_mode_string()
* ata_id_xfermask()
* ata_timing_find_mode()
These functions will be used later by LLD updates. While at it,
change unsigned short @speed to u8 @xfer_mode in
ata_timing_find_mode() for consistency.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Unindent loop body in generic_set_mode(). This is to ease future
change.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
It's very likely that the configured data transfer mode is the wrong
one if device fails data transfers right after initial data transfer
mode configuration (including NCQ on/off and xfermode). libata EH
needs to speed down fast before upper layers give up on probing.
This patch implement fast speed down rules to handle such cases
better. Error occured while data transfer hasn't been verified
trigger fast back-to-back speed down actions until data transfer
works.
This change will make cable mis-detection and other initial
configuration problems corrected before partition scanning code gives
up.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
ATA_DFLAG_DUBIOUS_XFER is set whenever data transfer speed or method
changes and gets cleared when data transfer command succeeds in the
newly configured transfer mode.
This will be used to improve speed down logic.
Signed-off-by: Tejun Heo <htejun@gmail.com<
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Speed down rules were too conservative. Adjust them a bit.
* More than 10 timeouts can't happen in 5 minutes as command timeout
is 30secs. Lower the limit for rule #1 to 6.
* 10 timeouts is too high for rule #3 too. Lower it to 6.
* SATAPI can benefit from falling back to PIO too. Allow SATAPI
devices to fall back to PIO.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Clean up EH speed down implementation.
* is_io boolean variable is replaced eflags. is_io is ATA_EFLAG_IS_IO.
* Error categories now have names.
* Better comments.
* Reorder 5min and 10min rules in ata_eh_speed_down_verdict()
* Use local variable @link to cache @dev->link in ata_eh_speed_down()
These changes are to improve readability and ease further changes.
This patch doesn't introduce any behavior change.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Move ata_set_mode() to libata-eh.c. ata_set_mode() is surely an EH
action and will be more tightly coupled with the rest of error
handling. Move it to libata-eh.c.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Factor out ata_eh_schedule_probe() from ata_eh_handle_dev_fail() and
ata_eh_recover(). This is to improve maintainability and make future
changes easier.
In the previous revision, ata_dev_enabled() test was accidentally
dropped while factoring out. This problem was spotted by Bartlomiej.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Cc: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Implement protocol tests - ata_is_atapi(), ata_is_nodata(),
ata_is_pio(), ata_is_dma(), ata_is_ncq() and ata_is_data() and use
them to replace is_atapi_taskfile() and hard coded protocol tests.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
For intel ones, ahci unconditionally OR'd 0xf to PCS. This isn't
correct for the following cases.
* ich6/7m's which only implement P0 and P2 (0xf works fine tho)
* ich8/9's which have six ports and needs 0x3f to enable all ports
This patch updates PCS programming such that...
* port_map determined by ahci_save_initial_config() is OR'd instead of 0xf
* PCS is updated only if necessary (there are turned off enable bits)
port_map is determined from PORTS_IMPL PCI register which is
implemented as write or write-once register. If the register isn't
programmed, ahci automatically generates it from number of ports,
which is good enough for PCS programming. ICH6/7M are probably the
only ones where non-contiguous enable bits are necessary && PORTS_IMPL
isn't programmed properly but they're proven to work reliably with 0xf
anyway.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Lots of work needed to bring it up to scratch but it does work so you can
now use the card. That makes it at least useful, especially as the other
cardbus cards are usually INIC162x which aren't yet supported well.
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Jeff said he preferred that the SFF tf_load followed the spec and we
documented that anyone who needed different overrode it, rather than it
using the ->check_status methods. No driver relies on the current behaviour.
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
I believe this version meets all Sergei's objections
Correct the logic for when we issue a set features for transfer mode
- If the device has IORDY and the controller has IORDY - set the mode
- If the device has IORDY and the controller does not - turn IORDY off
- If neither has IORDY do nothing
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
ACPI spec (ver 3.0a, p289) requires IDE power on/off executes ACPI _PSx
methods. As recently most PATA drivers use libata, this patch adds _PSx
method support in libata. ACPI spec doesn't mention if SATA requires the
same _PSx method.
Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Acked-by: Len Brown <len.brown@intel.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Historically word 48 in the identify data was used to mean 32bit I/O
was supported for VLB IDE etc. ATA8 reassigns this word to the Trusted
Computing Group, where it is used for TCG features. This means that
an ATA8 TCG drive is going to trigger 32bit I/O on some systems which
will be funny.
Anyway we need to sort this out ready for ATA8 so:
- Reorder the ata.h header a bit so the ata_version function occurs early
in it
- Make dword_io check the ATA version
- Add an ATA8 version checking TCG presence test
While we are at it the current drafts have a flaw where it may not be
possible to disable TCG features at boot (and opt out of the trusted
model) as TCG intends because it relies on presence of a different
optional feature (DCS). Handle this in software by refusing the TCG
commands if libata.allow_tpm is not set. (We must make it possible
as some environments such as proprietary VDR devices will doubtless
want to use it to lock up content)
Finally as with CPRM print a warning so that the user knows they may
not be able to full access and use the device.
Signed-off-by: Alan Cox <alan@redhat.com>
Add Toshiba Satellite R20 and Tecra M6 to broken suspend list. Matt
Piermarini reported and provided the M6 patch. This is from OSDL bug 7780.
Signed-off-by: Peter Schwenke <peter@bluetoad.com.au>
Cc: Matt Piermarini <mattpiermarini@yahoo.com>
Acked-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
The PDC202xx older devices do not support ATAPI DMA via the usual
interfaces. What documentation I have isn't sufficient to support DMA and
it isn't clear if the Windows drivers do this or it is possible at all.
(Neither do the drivers/ide old drivers)
So turn it ATAPI DMA off, these are disk optimised controllers.
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
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>
WARNING: line over 80 characters
#36: FILE: drivers/ata/pata_bf54x.c:1512:
+ while (bfin_port_info[board_idx].udma_mask>0 && udma_fsclk[udma_mode] > fsclk) {
ERROR: need spaces around that '>' (ctx:VxV)
#36: FILE: drivers/ata/pata_bf54x.c:1512:
+ while (bfin_port_info[board_idx].udma_mask>0 && udma_fsclk[udma_mode] > fsclk) {
^
total: 1 errors, 1 warnings, 19 lines checked
Your patch has style problems, please review. If any of these errors
are false positives report them to the maintainer, see
CHECKPATCH in MAINTAINERS.
Please run checkpatch prior to sending patches
Cc: Jeff Garzik <jeff@garzik.org>
Cc: Sonic Zhang <sonic.zhang@analog.com>
Cc: Tejun Heo <htejun@gmail.com>
Cc: sonic zhang <sonic.adi@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
In pata_legacy and pata_winbond we've got bugs - cpu_to_le16() instead
of cpu_to_le32(). Fortunately, both affected suckers are VLB, thus
l-e-only, so we might get away with that unless we hit it with slop == 3
(hadn't checked if playing with badly aligned sg could trigger that).
Still buggy... Moreover, pata_legacy, pata_winbond and pata_qdi forgot to
initialize pad on the write side of 32bit case in their ->data_xfer().
Hopefully the hardware does't care, but still, sending uninitialized
data to it...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Move electra-ide glue over to the new pata_of_platform framework, and
add the quirks needed to that driver.
Signed-off-by: Olof Johansson <olof@lixom.net>
This driver nicely wraps around pata_platform library functions,
and provides OF platform bus bindings to the PATA devices.
Also add || PPC to the PATA_PLATFORM's "depends on" Kconfig entry,
needed for PA Semi Electra.
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
Split pata_platform_{probe,remove} into two pieces:
1. pata_platform_{probe,remove} -- platform_device-dependant bits;
2. __ptata_platform_{probe,remove} -- device type neutral bits.
This is done to not duplicate code for the OF-platform driver.
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Acked-by: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Olof Johansson <olof@lixom.net>
After 9b8e8de7, manage_start_stop configuration depends on valid ATA
device. Move it into ata_scsi_dev_config(). This was detected by the
coverity checker.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Cc: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
CERR reports errors detected during executing a command. This doesn't
mean the error is tied to the command and can be recovered by just
issuing it again. Many of the errors are fatal port-wide connditions
including HSM violation, host bus error and ATA bus error and require
freezing and port reset.
The freezing part wasn't implemented previously. This used to be okay
because port resets were scheduled anyway and EH eventually resets and
recovers the port. With PMP support added, this is no longer true.
The error condition and recover actions are attributed to the fan-out
port and the host port condition isn't properly recovered leading to
EH failures.
This patch makes CERR errors which require resets to freeze the port.
This will force host port reset and proper recovery.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Cc: Andrew Ryder <tireman@shaw.ca>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This patch relaxes the default SCSI DMA alignment from 512 bytes to 4
bytes. I remember from previous discussions that usb and firewire have
sector size alignment requirements, so I upped their alignments in the
respective slave allocs.
The reason for doing this is so that we don't get such a huge amount of
copy overhead in bio_copy_user() for udev. (basically all inquiries it
issues can now be directly mapped).
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Fix commands timeout with Sil3124/3132 based HBA when pass-through ATA
commands [where ATA_QCFLAG_RESULT_TF is set] are used while other
commands are active on other devices connected to the same port with a
Port Multiplier. Due to a hardware bug, these commands must be sent
alone, like ATAPI commands.
Signed-off-by: Gwendal Grignou <gwendal@google.com>
Acked-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
After non-classifying reset, ehc->classes[] could contain
ATA_DEV_UNKNOWN which used to be normalized to ATA_DEV_NONE for
consistency. However, this causes unfortunate side effect for drivers
which have non-classifying hardresets (e.g. sata_nv) by making
hardreset report ATA_DEV_NONE for non-classifying resets and thus
makes EH believe that the port is unoccupied and recovery can be
skipped. The end result is that after a device is swapped with
another one, the new device isn't attached after the old one is
detached.
This patch makes ata_eh_reset() not normalize UNKNOWN to NONE after
non-classifying resets. This fixes the above problem. As UNKNOWN and
NONE are handled differently by only EH hotplug logic, this doesn't
cause other behavior changes.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Cc: Robert Hancock <hancockr@shaw.ca>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Timeout on downstream command may indicate transmission problem on
host link. Propagate timeouts to host link.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Turns out distros always enabled burst mode and it is pretty essential so
do the same. Also sort out the post DMA mode restore properly.
My 20263 card now seems happy but needs some four drive tests done yet
(when I've persuaded the kernel not to hang in the edd boot code if I
plug them in ..)
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
It is legitimate (although annoying and silly) for a PCI IDE controller
not to be assigned an interrupt and to be polled. The libata-sff code
should therefore not try and request IRQ 0 in this case.
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
During conversion to new EH, sata_qstor was accidentaly changed to use
softreset, which is buggy on this chip, instead of hardreset. This
patch updates sata_qstor such that it uses hardreset again.
This fixes bugzilla bug 9631.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Cc: Mark Lord <mlord@pobox.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
With ATAPI transfer chunk size properly programmed, libata PIO HSM
should be able to handle full spurious data chunks. Also, it's a good
idea to suppress trailing data warning for misc ATAPI commands as
there can be many of them per command - for example, if the chunk size
is 16 and the drive tries to transfer 510 bytes, there can be 31
trailing data messages.
This patch makes the following updates to libata ATAPI PIO HSM
implementation.
* Make it drain full spurious chunks.
* Suppress trailing data warning message for misc commands.
* Put limit on how many bytes can be drained.
* If odd, round up consumed bytes and the number of bytes to be
drained. This gets the number of bytes to drain right for drivers
which do 16bit PIO.
This patch is partial backport of improve-ATAPI-data-xfer patchset
pending for #upstream.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
While updating lbam/h for ATAPI commands, atapi_eh_request_sense() was
left out. Update it.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Implement _GTF command filtering which can be controlled by
libata.acpi_filter kernel parameter. Currently SETXFER and LOCK
commands are filtered.
libata configures transfer mode by itself and _GTF SETXFER commands
can potentially disrupt device configuration. _GTM/_STM mechanism
can't handle hotplugging too well and when _GTF is executed,
controller is in PIO0 rather than the mode _STM configured.
Note that detecting SET MAX LOCK requires looking at the previous
command. This adds a bit to code complexity.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
As _GTF commands can't transfer data, device error never signals
transfer error. It indicates that the device vetoed the operation, so
it's meaningless to retry.
This patch makes libata-acpi to report and continue on device errors
when executing _GTF commands. Also commands rejected by device don't
contribute to the number of _GTF commands executed.
While at it, update _GTF execution reporting such that all successful
commands are logged at KERN_DEBUG and rename taskfile_load_raw() to
ata_acpi_run_tf() for consistency.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
* If _GTF evalution fails, it's pointless to retry. If nothing else
is wrong, just ignore the error.
* After disabling ACPI, return success iff the number of executed _GTF
command equals zero. Otherwise, tell EH to retry. This change
fixes bogus 1 return bug where ata_acpi_on_devcfg() expects the
caller to reload IDENTIFY data and continue but the caller
interprets it as an error.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
On certain implementations, _GTF evaluation depends on preceding _STM
and both can be pretty picky about the configuration. Using _GTM
result cached during controller initialization satisfies the most
neurotic _STM implementation. However, libata evaluates _GTF after
reset during device configuration and the hardware state can be
different from what _GTF expects and can cause evaluation failure.
This patch adds dev->gtf_cache and updates ata_dev_get_GTF() such that
it uses the cached value if available. Cache is cleared with a call
to ata_acpi_clear_gtf().
Because for SATA ACPI nodes _GTF must be evaluated after _SDD which
can't be done till IDENTIFY is complete, _GTF caching from
ata_acpi_on_resume() is used only for IDE ACPI nodes.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
_GTM fetches currently configured transfer mode while _STM configures
controller according to _GTM parameter and prepares transfer mode
configuration TFs for _GTF. In many cases _GTM and _STM
implementations are quite brittle and can't cope with configuration
changed by libata.
libata does not depend on ATA ACPI to configure devices. The only
reason libata performs _GTM and _STM are to make _GTF evaluation
succeed and libata also doesn't care about how _GTF TFs configure
transfer mode. It overrides that configuration anyway, so from
libata's POV, it doesn't matter what value is feeded to _STM as long
as evaluation succeeds for _STM and following _GTF.
This patch adds dev->__acpi_init_gtm and store initial _GTM values on
host initialization before modified by reset and mode configuration.
If the field is valid, ata_acpi_init_gtm() returns pointer to the
saved _GTM structure; otherwise, NULL.
This saved value is used for _STM during resume and peek at
BIOS/firmware programmed initial timing for later use. The accessor
is there to make building w/o ACPI easy as dev->__acpi_init doesn't
exist if ACPI is not enabled.
On driver detach, the initial BIOS configuration is restored by
executing _STM with the initial _GTM values such that the next driver
can also use the initial BIOS configured values.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Add two hooks - ata_acpi_dissociate() which is called during driver
detach after the whole host is shutdown and ata_acpi_on_disable()
which is called when a device is disabled.
Signed-off-by: Tejun heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
ata_port_detach() calls ata_dev_disable() with host lock held but
ata_dev_disable() should be called from EH context. ata_port_detach()
steals EH context by setting ATA_PFLAG_UNLOADAING and flushing EH.
Drop locking around ata_dev_disable() and note that ata_port_detach()
owns EH context at that point.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
* No internal function uses const ata_port. Drop const from @ap.
* Make ata_acpi_stm() copy @stm before using it and change @stm to
const.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Improve the existing boot/load time warnings from sata_mv
for Highpoint RocketRAID 23xx cards, based on new knowledge
about where the BIOS likes to overwrite sectors with metadata.
Harmless to us, but very useful for end users.
Signed-off-by: Mark Lord <mlord@pobox.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Like ST380817AS / 3.42, ST3160023AS / 3.42 times out commands if NCQ
is used. Blacklist it. This is reported by Matheus Izvekov in the
following thread.
http://thread.gmane.org/gmane.linux.ide/24202
Signed-off-by: Tejun Heo <htejun@gmail.com>
Cc: Matheus Izvekov <mizvekov@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
link->eh_info.serror is used to cache SError for controllers which
need it cleared from interrupt handler to clear IRQ. It also should
be cleared after reset just like SError itself.
Make ata_std_postreset() clear link->eh_info.serror too and update
sata_sil such that it doesn't care about bookkeeping the value.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Interestingly, sata_sil raises spurious interrupts if it's coupled
with Sil SATA_PATA bridge. Currently, sata_sil interrupt handler is
strict about spurious interrupts and freezes the port when it occurs.
This patch makes it more forgiving.
* On SATA PHY event interrupt, serror value is checked to see whether
it really is PHYRDY CHG event. If not, SATA PHY event interrupt is
ignored.
* If ATA interrupt occurs while no command is in progress, it's
cleared and ignored.
This fixes bugzilla bug 9505.
http://bugzilla.kernel.org/show_bug.cgi?id=9505
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Spurious NCQ completion detection implemented in ahci was incorrect.
On AHCI receving and processing FISes and raising interrupts are not
interlocked and spurious interrupts are expected.
For example, if an interrupt occurs while interrupt handler is running
and the running interrupt handler handles the event the new IRQ
indicated, after IRQ handler finishes, it will be executed again
because IRQ pending bit is set by the new interrupt but there won't be
anything to process.
Please read the following message for more information.
http://article.gmane.org/gmane.linux.ide/26012
This patch...
* Removes all spurious IRQ whining from ahci. Spurious NCQ completion
detection was completely wrong. Spurious D2H Register FIS taught us
that some early drives send spurious D2H Register FIS with I bit set
while NCQ commands are in progress but none of recent drives does
that and even the ones which show such behavior can do NCQ fine.
* Kills all NCQ blacklist entries which were added because of spurious
NCQ completions. I tracked down each commit and verified all
removed ones are actually added because of spurious completions.
WD740ADFD-00NLR1 wasn't deleted but moved upward because the drive
not only had spurious NCQ completions but also is slow on sequential
data transfers if NCQ is enabled.
Maxtor 7V300F0 was added by 0e3dbc01d5
from Alan Cox. I can only find evidences that the drive only had
troubles with spuruious completions by searching the mailing list.
This entry needs to be verified and removed if it doesn't have other
NCQ related problems.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
ICH6 R/Ms share PCI ID between piix and ahci modes and we've been
allowing ahci to attach regardless of how BIOS configured it.
However, enabling AHCI mode when the controller is in combined mode
can result in unexpected behavior. Don't attach if the controller is
in combined mode.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Cc: Bill Nottingham <notting@redhat.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Add Toshiba Tecra M4 to broken suspend list. This is from OSDL
bugzilla bug 7780.
Signed-off-by: Peter Schwenke <peter@bluetoad.com.au>
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
There isn't much point in reporting -EOPNOTSUPP as failure. Also the
message was missing newline.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
* Don't program UDMA timings when programming PIO or MWDMA modes.
This has also a nice side-effect of fixing regression added by commit
681c80b5d9 ("libata: correct handling of
SRST reset sequences") (->set_piomode method for PIO0 is called before
->cable_detect method which checks UDMA timings to get the cable type).
* Bump driver version.
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Tested-by: "Thomas Lindroth" <thomas.lindroth@gmail.com>
Acked-by: 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: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Add the device IDs of legacy mode of MCP79 AHCI controller to ahci.c
Signed-off-by: Peer Chen <peerchen@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
The Highpoint RocketRAID boards using Marvell 7042 chips
overwrite the 9th sector of attached drives at boot time,
when those drives are configured as "Legacy" (the default)
in the HighPoint BIOS.
This kills GRUB, and probably other stuff.
But it all happens *before* Linux is even loaded.
So, for now we'll log a WARNING when such boards are detected,
and advise users to configure BIOS "JBOD" volumes instead,
which don't appear to suffer from this problem.
Signed-off-by: Mark Lord <mlord@pobox.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
We need to run any DMA command with result taskfile requested in ADMA mode
when the port is in ADMA mode, otherwise it may try to use the legacy DMA engine
in ADMA mode which is not allowed. Enforce this with BUG_ON() since data
corruption could potentially result if this happened. Also, fail any attempt to
try and issue NCQ commands with result taskfile requested, since the hardware
doesn't allow this.
Signed-off-by: Robert Hancock <hancockr@shaw.ca>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
sata_mv: Fix broken Marvell 7042 support.
The Marvell 7042 chip is more or less the same as the 6042 internally,
but sports a PCIe bus. Despite having identical SATA cores, the 7042
does differ from its PCI bus counterparts in placment and layout of
certain bus related registers.
This patch fixes sata_mv to distinguish between the PCI bus registers
of earlier chips, and the PCIe bus registers of the 7042.
Specifically, move the offsets and bit patterns for the
PCI/PCIe interrupt cause/mask registers into the struct mv_host_priv,
as these values differ between the 6xxx and 7xxx series chips.
This fixes the driver to not access reserved PCI addresses,
and prevents the lockups reported in linux-2.6.24 with 7042 boards.
Also add a new PCI ID for the Highpoint 2300 7042-based board
that I'm using for testing this stuff here.
Tested with Marvell 6081 + 7042 chips, on x86 & x86_64.
Signed-off-by: Mark Lord <mlord@pobox.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
On Fri, 30 Nov 2007 14:34:11 +0200 (EET)
Meelis Roos <mroos@linux.ee> wrote:
> > Can you stick a stack trace in at that point ? That would help diagnose
> > it a great deal quicker.
>
> Finally done - found out hard way that BUG() is too bad and
> dump_st5ack() suits me better.
Thanks. This should fix the real cause, and also allow for port start to
fail politely with -ENODEV.
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Add more toshiba laptops to broken suspend list. This is from OSDL
bugzilla bug 7780.
tj: re-formatted patch and added description and SOB.
Signed-off-by: Peter Schwenke <peter@bluetoad.com.au>
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
libata: Add more TSST (Samsung/Toshiba) IDE drives with broken
cable detection validation bits.
signed-off-by: Peter Missel (peter.missel@onlinehome.de)
Acked-by: Alan Cox <alan@redhat.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Protocol and CDB allocation size field are important in determining
what went wrong with ATAPI commands. Report them on failure.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Several fixes for the AVR32 PATA driver:
* Updated to use new AVR32 SMC timing API. This removes the need for "magic"
constants in signal timing.
* Removed the ATA_FLAG_PIO_POLLING, the driver should use interrupts.
* Removed .port_disable and .irq_ack as these are no longer needed.
* Improved some comments.
Signed-off-by: Kristoffer Nyborg Gregertsen <kngregertsen@norway.atmel.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
None of the drives I have follows what the standard says about
transfer chunk size. Of the four SATA and six PATA ATAPI devices
tested, four ignore transfer chunk size completely and the ones which
honor it don't behave according to the spec when it's odd.
According to the spec, transfer chunk size can be odd if the amount of
data to transfer equals or is smaller than the chunk size and the
device can indicate the same odd number and transfer the whole thing
at one go with a pad byte appended. However, in reality, none of the
drives I have does that. They all indicate and transfer even number
of bytes one byte shorter than the chunk size first; then indicate and
transfer two bytes, which is clearly out of spec.
In addition to unnecessary second PIO data phase, this also creates a
weird problem when combined with SATA controllers which perform PIO
via DMA. Some of these controllers use actualy number of bytes
received to update DMA pointer so chunks which are sized 4n + 2 makes
DMA pointer off by two bytes. This causes data corruption and buffer
overruns.
This patch rounds nbytes up to the nearest even number such that ATAPI
devices don't split data transfer for the last odd byte. This
shouldn't confuse controllers which depend on transfer chunk size as
devices will report the rounded-up number, actually transfer that much
and padding buffer is there to receive them.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
If a card has no IRQ then pass no interrupt handler but allow polled
usage.
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Hopefully there is a better long term solution but for now lets favour
reliability.
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
sil24 unnecessarily used LIBATA_MAX_PRD and ATAPI sg table was short
by one entry which might cause very obscure problems. This patch
updates sg table sizing such that
* One full page is used for PRB + sg table. On 4k page,
this results in 253 sg's.
* Make ATAPI sg block properly sized.
* Make build fail if command block size doesn't equal PAGE_SIZE.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
There are two bugs in disabled port handling.
* test in PORT_PATA0 is reversed
* ->prereset should return -ENOENT for disabled ports not 0
The first bug makes the PATA channel considered disabled but the
second bug saves the day by returning 0. The net result is that cable
is always left at ATA_CBL_UNKNOWN. This results in false 80c
configuration and thus transfer errors.
This patch fixes both bugs.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Since writing to two reserved bits ain't much of a housekeeping, I think it's
time we get rid of the custom error handler in this driver. ;-)
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
ICH8 and 9 use two SFF controllers to show 6 SATA ports. The first
controllre hosts the first 4 ports while the second one hosts the last
2. The PCS register of the first controller encompasses the first
four ports or all six ports depending on configuration while PCS of
the second controller controls the last two ports. Using 0xf for the
first controller and 0x3 for the second controller always result in
the correct configuration.
Signed-off-by: Tejun Heo <htejun@gmail.com>
ICH8M on apple macbook pro occasionally locks up completely during PCS
initialization if ports other than the first one are enabled. Add a
separate controller ID and only enable the first port.
tj: commit description added and patch updated to fit with the
previous controller ID update.
Signed-off-by: Thomas Rohwer <tr@tng.de>
Signed-off-by: Tejun Heo <htejun@gmail.com>
Move piix_pata_mwdma to top, rename ich9_2port_sata to ich8_2port_sata
for consistency and use automatically incremented values instead of
assigning fixed values to ease adding new controller IDs.
Signed-off-by: Tejun Heo <htejun@gmail.com>
With newer kernels HDD in my old laptop is limited to UDMA 33.
With this patch I get UDMA 100 again.
Signed-off-by: Gabriel Craciunescu <nix.or.die@googlemail.com>
Signed-off-by: Tejun Heo <htejun@gmail.com>
Sebastian Kemper reported that issuing CD/DVD commands under libata is
not fully compatible with ide-scsi. In particular, the
GPCMD_SET_STREAMING was being rejected at the host level in some
instances.
The reason is that libata-scsi insists upon the cmd_len field exactly
matching the SCSI opcode being issued, whereas ide-scsi tolerates
12-byte commands contained within a 16-byte (cmd_len) CDB.
There doesn't seem to be a good reason for us to not be compatible
there, so here is a patch to fix libata-scsi to permit SCSI opcodes so
long as they fit within whatever size CDB is provided.
Signed-off-by: Mark Lord <mlord@pobox.com>
Signed-off-by: Tejun Heo <htejun@gmail.com>
Per Mark's comments, maybe all ATAPI tape drives need ATA_HORKAGE_STUCK_ERR.
This patch applys ATA_HORKAGE_STUCK_ERR for all ATAPI tape drives.
Signed-off-by: Albert Lee <albertcc@tw.ibm.com>
Cc: Mark Lord <liml@rtr.ca>
Signed-off-by: Tejun Heo <htejun@gmail.com>
After an error condition, some ATAPI tape drives set DRQ=1 together
with ERR=1 when asking the host to transfer the CDB of the next packet
command (i.e. request sense). This patch, a revised version of
Alan/Mark's previous patch, adds ATA_HORKAGE_STUCK_ERR to workaround
the problem by ignoring the ERR bit and proceed sending the CDB.
Signed-off-by: Albert Lee <albertcc@tw.ibm.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Mark Lord <liml@rtr.ca>
Signed-off-by: Tejun Heo <htejun@gmail.com>
Satellite U205 has alternate product name where the satellite part is
all capatalized. Add it to the blacklist.
This is reported by Ross Patterson in kernel bugzilla bug #7780.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Cc: Ross Patterson <me@rpatterson.net>
Experience suggests that the _GTF method may be bad. We currently fail
device revalidation in that case, which seems excessive.
Signed-off-by: Matthew Garrett <mjg59@srcf.ucam.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Port / host stop calls used to be made from ata_host_release() which
is called after all hardware resources acquired after host allocation
are released. This is wrong as port and host stop routines often
access the hardware.
Add separate devres for port / host stop which is invoked right after
IRQ is released but with all other hardware resources intact. The
devres is added iff ->host_stop and/or ->port_stop exist.
This problem has been spotted by Mark Lord.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Cc: Mark Lord <liml@rtr.ca>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
In a presentation of true workmanship, pata_ali asserts IRQ
permanantly if the TF status register is read more than once when
there's no device attached to the port.
Avoid waiting polling for !0xff if it's PATA. It's needed only for
some rare SATA devices anyway.
This problem is reported by Luca Tettamanti in bugzilla bug 9298.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Tested-By: Luca Tettamanti <kronos.it@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Some SH boards (old R2D-1 boards) have generally not had working CF
under libata, due to both buswidth issues (handled by Aoi Shinkai
in 43f4b8c757), and buggy interrupt
controllers. For these sorts of boards simply disabling the IRQ and
polling ends up working fine.
This conditionalizes the IRQ resource for pata_platform and lets
platforms that want to use polling mode simply omit the resource
entirely.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
By default ata_host_activate() expects a valid IRQ in order to
successfully register the host. This patch enables a special case
for registering polling-only hosts that either don't have IRQs
or have buggy IRQ generation (either in terms of handling or
sensing), which otherwise work fine.
Hosts that want to use polling mode can simply set ATA_FLAG_PIO_POLLING
and pass in an invalid IRQ.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
