Remove some obsolete comments, and bump up the driver version number.
Signed-off-by: NMark Lord <mlord@pobox.com>
Signed-off-by: NJeff 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: NMark Lord <mlord@pobox.com>
Signed-off-by: NJeff Garzik <jeff@garzik.org>

Final changes to actually turn on NCQ in the driver for GEN_II/IIE hardware.
Signed-off-by: NMark Lord <mlord@pobox.com>
Signed-off-by: NJeff 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: NMark Lord <mlord@pobox.com>
Signed-off-by: NJeff Garzik <jeff@garzik.org>

This patch adds the Intel ICH10 IDE mode SATA Controller DeviceID's.
Signed-off-by: NJason Gaston <jason.d.gaston@intel.com>
Signed-off-by: NJeff Garzik <jeff@garzik.org>

This patch adds the Intel ICH10 SATA RAID Controllers DeviceID's.
Signed-off-by: NJason Gaston <jason.d.gaston@intel.com>
Signed-off-by: NJeff 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: NMark Lord <mlord@pobox.com>
Signed-off-by: NJeff 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: NMark Lord <mlord@pobox.com>
Signed-off-by: NJeff Garzik <jeff@garzik.org>

The lower 8 bits of response status are not valid for NCQ.
Signed-off-by: NMark Lord <mlord@pobox.com>
Signed-off-by: NJeff Garzik <jeff@garzik.org>

Simplify tag handling by using the cid/hqtag field instead of ioid,
as recommended by Marvell.
Signed-off-by: NMark Lord <mlord@pobox.com>
Signed-off-by: NJeff 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: NMark Lord <mlord@pobox.com>
Signed-off-by: NJeff 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: NMark Lord <mlord@pobox.com>
Signed-off-by: NJeff 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: NMark Lord <mlord@pobox.com>
Signed-off-by: NJeff 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: NMark Lord <mlord@pobox.com>
Signed-off-by: NJeff 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: NMark Lord <mlord@pobox.com>
Signed-off-by: NJeff 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: NLinus Nilsson <lajnold@acc.umu.se>
Signed-off-by: NLinus 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: NJerry Huang <Chang-Ming.Huang@freescale.com>
Signed-off-by: NKim Phillips <kim.phillips@freescale.com>
Signed-off-by: NKumar 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: NGrant Likely <grant.likely@secretlab.ca>

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: NHugh Dickins <hugh@veritas.com>
Acked-by: NJeff Garzik <jeff@garzik.org>
Signed-off-by: NJames 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: NOlof Johansson <olof@lixom.net>
Cc: Jeff Garzik <jeff@garzik.org>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NJeff Garzik <jeff@garzik.org>

Signed-off-by: NJeff 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: NAlan Cox <alan@redhat.com>
Signed-off-by: NJeff Garzik <jeff@garzik.org>

Not much to do here. It's an ata memory as disk.
Signed-off-by: NAlan Cox <alan@redhat.com>
Signed-off-by: NJeff Garzik <jeff@garzik.org>

If no device is active return an error not zero.
Signed-off-by: NAlan Cox <alan@redhat.com>
Signed-off-by: NJeff 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: NAlan Cox <alan@redhat.com>
Signed-off-by: NJeff Garzik <jeff@garzik.org>

ata_irq is always assigned so does not need to be initialised to zero.
Signed-off-by: NAlan Cox <alan@redhat.com>
Signed-off-by: NJeff 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: NTejun Heo <htejun@gmail.com>
Signed-off-by: NJeff 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: NTejun Heo <htejun@gmail.com>
Signed-off-by: NJeff 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: NTejun Heo <htejun@gmail.com>
Signed-off-by: NJeff 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: NTejun Heo <htejun@gmail.com>
Signed-off-by: NJeff 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: NTejun Heo <htejun@gmail.com>
Signed-off-by: NJeff Garzik <jeff@garzik.org>

Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
Cc: Jeff Garzik <jeff@garzik.org>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NJeff 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: NAlan Cox <alan@redhat.com>
Cc: Tejun Heo <htejun@gmail.com>
Cc: Jeff Garzik <jeff@garzik.org>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NJeff Garzik <jeff@garzik.org>

Cc: Jeff Garzik <jeff@garzik.org>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NJeff 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: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NJeff Garzik <jeff@garzik.org>

While merging data_xfer prototype change, pata_pcmcia was left out.
Convert it.
Signed-off-by: NTejun Heo <htejun@gmail.com>
Signed-off-by: NJeff Garzik <jeff@garzik.org>

Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
Signed-off-by: NJeff 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: NTejun Heo <htejun@gmail.com>
Signed-off-by: NJeff Garzik <jeff@garzik.org>

Kill PIIX_FLAG_SCR, PIIX_PORT_ENABLED and PIIX_PORT_PRESENT.  These
are unused.
Signed-off-by: NTejun Heo <htejun@gmail.com>
Signed-off-by: NJeff 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: NJeff Garzik <jgarzik@redhat.com>