Signed-off-by: NJeff Garzik <jeff@garzik.org>

Noticed by several people.
Signed-off-by: NJeff Garzik <jeff@garzik.org>

The biggest change is that ata_host_set is renamed to ata_host.

* ata_host_set			=> ata_host
* ata_probe_ent->host_flags	=> ata_probe_ent->port_flags
* ata_probe_ent->host_set_flags	=> ata_probe_ent->_host_flags
* ata_host_stats		=> ata_port_stats
* ata_port->host		=> ata_port->scsi_host
* ata_port->host_set		=> ata_port->host
* ata_port_info->host_flags	=> ata_port_info->flags
* ata_(.*)host_set(.*)\(\)	=> ata_\1host\2()

The leading underscore in ata_probe_ent->_host_flags is to avoid
reusing ->host_flags for different purpose.  Currently, the only user
of the field is libata-bmdma.c and probe_ent itself is scheduled to be
removed.

ata_port->host is reused for different purpose but this field is used
inside libata core proper and of different type.
Signed-off-by: NTejun Heo <htejun@gmail.com>
Signed-off-by: NJeff Garzik <jeff@garzik.org>

Replace pci_module_init() with pci_register_driver().
Signed-off-by: NPavel Roskin <proski@gnu.org>
Signed-off-by: NTejun Heo <htejun@gmail.com>

Signed-off-by: NJörn Engel <joern@wohnheim.fh-wedel.de>
Signed-off-by: NAdrian Bunk <bunk@stusta.de>

Update major version for libata, and several drivers.
Signed-off-by: NJeff Garzik <jeff@garzik.org>

Based on a patch contributed by Andrew Chew @ NVIDIA.
Signed-off-by: NJeff Garzik <jeff@garzik.org>

We don't need to use the heavier spin lock in the irq handler.

It's quite possible we can do this in nv_generic_interrupt() as well,
but I didn't take the time to pursue that train of thought.
Signed-off-by: NJeff Garzik <jeff@garzik.org>

Add hotplug support.
Signed-off-by: NTejun Heo <htejun@gmail.com>
Signed-off-by: NJeff Garzik <jeff@garzik.org>

Convert to new EH.
Signed-off-by: NTejun Heo <htejun@gmail.com>
Signed-off-by: NJeff Garzik <jeff@garzik.org>

nf2/3 and ck804 have irq status register.  Implement better irq
handler for those flavors of nv.  This patch makes different flavors
of nv controllers use different irq handlers by using separate
port_info for each flavor.

This change also makes following EH and hotplug updates easier to
integrate.
Signed-off-by: NTejun Heo <htejun@gmail.com>
Signed-off-by: NJeff Garzik <jeff@garzik.org>

Simplify interrupt constants and make NFORCE3 equal to NFORCE2.
Signed-off-by: NTejun Heo <htejun@gmail.com>
Signed-off-by: NJeff Garzik <jeff@garzik.org>

nv_host_desc and nv_host are used to discern different generations of
nv controllers.  Kill those.  New EH/hotplug implementation will use
standard port_info/ata_port_operations for that.
Signed-off-by: NTejun Heo <htejun@gmail.com>
Signed-off-by: NJeff Garzik <jeff@garzik.org>

sata_nv contained hotplug code which is mainly for demonstrating how
hotplug event is handled.  This patch kills the demo code in
prepration for real hotplug implementation.
Signed-off-by: NTejun Heo <htejun@gmail.com>
Signed-off-by: NJeff Garzik <jeff@garzik.org>

Hook transportt->user_scan() and hostt->slave_destroy().
Signed-off-by: NTejun Heo <htejun@gmail.com>

We need to pass the device in order to do per device checks such as
32bit I/O enables. With the changes to include dev->ap we now don't have
to add parameters however just clean them up. Also add data_xfer methods
to the existing drivers except ata_piix (which is in the other block of
patches). If you reject the piix one just add a data_xfer to it...
Signed-off-by: NAlan Cox <alan@redhat.com>
Signed-off-by: NJeff Garzik <jeff@garzik.org>

Added MCP61 SATA support to sata_nv.
Signed-off-by: NJeff Garzik <jeff@garzik.org>

Overriding the whole EH code is a per-transport, not per-host thing.
Move ->eh_strategy_handler to the transport class, same as
->eh_timed_out.

Downside is that scsi_host_alloc can't check for the total lack of EH
anymore, but the transition period from old EH where we needed it is
long gone already.
Signed-off-by: NChristoph Hellwig <hch@lst.de>
Signed-off-by: NJeff Garzik <jeff@garzik.org>

Rename ATA_FLAG_PORT_DISABLED to ATA_FLAG_DISABLED for consistency.
(ATA_FLAG_* are always about ports).
Signed-off-by: NTejun Heo <htejun@gmail.com>
Signed-off-by: NJeff Garzik <jeff@garzik.org>

eliminate a bunch of
	if (mmio)
		writel()
	else
		outl()

code with the pci_iomap() and io{read,write}{8,16,32}() interface.

SCSI midlayer has moved hostt->eh_timed_out to transport template.  As
libata doesn't need full-blown transport support yet, implement
minimal transport for libata.  No transport class or whatsoever, just
empty transport template with ->eh_timed_out hook.
Signed-off-by: NTejun Heo <htejun@gmail.com>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>

The previous dev->max_sectors patch made sht->max_sectors meaningless.
Kill all initializations of sht->max_sectors.
Signed-off-by: NTejun Heo <htejun@gmail.com>
Signed-off-by: NJeff Garzik <jgarzik@pobox.com>

Make all libata low level drivers use ata_scsi_timed_out().
Signed-off-by: NTejun Heo <htejun@gmail.com>
Signed-off-by: NJeff Garzik <jgarzik@pobox.com>

This patch works around a problem with spurious interrupts seen at boot time when
a MAXTOR 6H500F0 drive is present.  An ATA interrupt condition is mysteriously
present at start of day.  If we took too long in issuing the first command,
the kernel would basically get tired of the spurious interrupts and turn the interrupt
off.  Issuing the first command essentially causes the interrupt condition to
get acknowledged.

I haven't seen this happen with any other drives.

What I basically do is ack ATA status by reading it regardless of whether we're
expecting to have to handle an interrupt.  This clears the start-of-day anomalous
interrupt condition, and keeps the kernel from disabling that interrupt due to
too many spurious interrupts.

Also, I fixed a bug where hotplug interrupts weren't getting acknowledged as handled
in the ISR.  This was not the cause of the spurious interrupts, but it's the right
thing to do anyway.

Signed-Off-By: Andrew Chew
Signed-off-by: NJeff Garzik <jgarzik@pobox.com>

Reflect changes in SCSI midlayer and updated to use new
ordered request implementation
Signed-off-by: NTejun Heo <htejun@gmail.com>
Signed-off-by: NJens Axboe <axboe@suse.de>

Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>

A few drivers were not following the standard meme of printing out
their driver name and version at module load time; this is fixed
as well.

Enforce access rules where appropriate.

If the compiler is smart enough, this may buy us an optimization or two
as a side effect.

Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
Signed-off-by: NJeff Garzik <jgarzik@pobox.com>

Patch to fix sata_nv handling of NVIDIA MCP51/55
Signed-off-by: NAndy Currid <acurrid@nvidia.com>
Signed-off-by: NJeff Garzik <jgarzik@pobox.com>

This redoes the n_ports logic I proposed before as a bitmask.
ata_pci_init_native_mode is now used with a mask allowing for mixed mode
stuff later on. ata_pci_init_legacy_port is called with port number and
does one port now not two. Instead it is called twice by the ata init
logic which cleans both of them up.

There are stil limits in the original code left over

- IRQ/port mapping for legacy mode should be arch specific values
- You can have one legacy mode IDE adapter per PCI root bridge on some systems
- Doesn't handle mixed mode devices yet (but is now a lot closer to it)

libata.h:
libata-core:
  Add ATA_FLAG_PIO_POLLING flag for LLDs that expect interrupt for
command completion only.

sata_nv.c:
sata_vsc.c:
  irq handler is wrapper around ata_host_intr(), can handle PIO interrupts.

sata_promise.c:
sata_sx4.c:
sata_qstor.c:
sata_mv.c:
  Private irq handler.
  Polling mode ATA_FLAG_PIO_POLLING used for compatibility.
Signed-off-by: NAlbert Lee <albertcc@tw.ibm.com>
Signed-off-by: NJeff Garzik <jgarzik@pobox.com>

Signed-off-by: NAndy Currid <acurrid@nvidia.com>
Signed-off-by: NJeff Garzik <jgarzik@pobox.com>