Commit Graph

82 Commits

Author SHA1 Message Date
Lennert Buytenhek
15a32632d9 sata_mv: mbus decode window support
Make it possible to pass mbus_dram_target_info to the sata_mv
driver via the platform data, make the sata_mv driver program
the window registers based on this data if it is passed in, and
make the Orion platform setup code use this method instead of
programming the SATA mbus window registers by hand.

Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Reviewed-by: Tzachi Perelstein <tzachi@marvell.com>
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Nicolas Pitre <nico@marvell.com>
2008-03-27 14:51:39 -04:00
Saeed Bishara
f1cb0ea12f sata_mv: remove iounmap in mv_platform_remove and use devm_iomap
this will fix crash bug when doing rmmod to the driver, this is because the
port_stop function get called later and it could access the device's registers.

Signed-off-by: Saeed Bishara <saeed@marvell.com>
Acked-by: Mark Lord <mlord@pobox.com>
Acked-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2008-02-20 12:20:46 -05:00
Saeed Bishara
0fca0d6f2c sata_mv: use hpriv->base instead of the host->iomap
this fixes crash bug as the iomap table is not valid for integrated controllers.

Signed-off-by: Saeed Bishara <saeed@marvell.com>
Acked-by: Mark Lord <mlord@pobox.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2008-02-20 12:09:17 -05:00
Martin Michlmayr
2e7e1214de sata_mv: Define module alias for platform device
The sata_mv driver can be loaded as a platform device, as is done by
various Orion (ARM) based devices.  The driver needs to define a module
alias for the platform driver so udev will load it automatically.
Tested with Debian on a QNAP TS-209.

Signed-off-by: Martin Michlmayr <tbm@cyrius.com>
Acked-by: Mark Lord <mlord@pobox.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2008-02-20 12:08:54 -05:00
James Bottomley
dde2020754 libata: eliminate the home grown dma padding in favour of
that provided by the block layer

ATA requires that all DMA transfers begin and end on word boundaries.
Because of this, a large amount of machinery grew up in ide to adjust
scatterlists on this basis.  However, as of 2.5, the block layer has a
dma_alignment variable which ensures both the beginning and length of a
DMA transfer are aligned on the dma_alignment boundary.  Although the
block layer does adjust the beginning of the transfer to ensure this
happens, it doesn't actually adjust the length, it merely makes sure
that space is allocated for transfers beyond the declared length.  The
upshot of this is that scatterlists may be padded to any size between
the actual length and the length adjusted to the dma_alignment safely
knowing that memory is allocated in this region.

Right at the moment, SCSI takes the default dma_aligment which is on a
512 byte boundary.  Note that this aligment only applies to transfers
coming in from user space.  However, since all kernel allocations are
automatically aligned on a minimum of 32 byte boundaries, it is safe to
adjust them in this manner as well.

tj: * Adjusting sg after padding is done in block layer.  Make libata
      set queue alignment correctly for ATAPI devices and drop broken
      sg mangling from ata_sg_setup().
    * Use request->raw_data_len for ATAPI transfer chunk size.
    * Killed qc->raw_nbytes.
    * Separated out killing qc->n_iter.

Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2008-02-19 11:36:56 +01:00
Harvey Harrison
5ab063e397 ata: fix sparse warnings in sata_mv.c
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>
2008-02-15 13:51:03 -05:00
Byron Bradley
fbf14e2f2d sata_mv: platform driver allocs dma without create
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>
2008-02-11 14:30:10 -05:00
Yinghai Lu
8f71efe25f sata_mv: fix loop with last port
commit f351b2d638
        sata_mv: Support SoC controllers

cause panic:

scsi 4:0:0:0: Direct-Access     ATA      HITACHI HDS7225S V44O PQ: 0 ANSI: 5
sd 4:0:0:0: [sde] 488390625 512-byte hardware sectors (250056 MB)
sd 4:0:0:0: [sde] Write Protect is off
sd 4:0:0:0: [sde] Mode Sense: 00 3a 00 00
sd 4:0:0:0: [sde] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
sd 4:0:0:0: [sde] 488390625 512-byte hardware sectors (250056 MB)
sd 4:0:0:0: [sde] Write Protect is off
sd 4:0:0:0: [sde] Mode Sense: 00 3a 00 00
sd 4:0:0:0: [sde] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
 sde:<1>BUG: unable to handle kernel NULL pointer dereference at 000000000000001a
IP: [<ffffffff806262c7>] mv_interrupt+0x21c/0x4cc
PGD 0
Oops: 0000 [1] SMP
CPU 3
Modules linked in:
Pid: 0, comm: swapper Not tainted 2.6.24-smp-08636-g0afc2ed-dirty #26
RIP: 0010:[<ffffffff806262c7>]  [<ffffffff806262c7>] mv_interrupt+0x21c/0x4cc
RSP: 0000:ffff8102050bbec8  EFLAGS: 00010297
RAX: 0000000000000008 RBX: 0000000000000000 RCX: 0000000000000003
RDX: 0000000000008000 RSI: 0000000000000286 RDI: ffff8102035180e0
RBP: 0000000000000001 R08: 0000000000000003 R09: ffff8102036613e0
R10: 0000000000000002 R11: ffffffff8061474c R12: ffff8102035bf828
R13: 0000000000000008 R14: ffff81020348ece8 R15: ffffc20002cb2000
FS:  0000000000000000(0000) GS:ffff810405025700(0000) knlGS:0000000000000000
CS:  0010 DS: 0018 ES: 0018 CR0: 000000008005003b
CR2: 000000000000001a CR3: 0000000000201000 CR4: 00000000000006e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Process swapper (pid: 0, threadinfo ffff810405094000, task ffff8102050b28c0)
Stack:  000000010000000c 0002040000220400 0000001100000002 ffff81020348eda8
 0000000000000001 ffff8102035f2cc0 0000000000000000 0000000000000000
 0000000000000018 0000000000000000 0000000000000000 ffffffff80269ee8
Call Trace:
 <IRQ>  [<ffffffff80269ee8>] ? handle_IRQ_event+0x25/0x53
 [<ffffffff8026b393>] ? handle_fasteoi_irq+0x90/0xc8
 [<ffffffff802218e2>] ? do_IRQ+0xf1/0x15f
 [<ffffffff8021df24>] ? default_idle+0x0/0x55
 [<ffffffff8021f361>] ? ret_from_intr+0x0/0xa
 <EOI>  [<ffffffff8023010c>] ? lapic_next_event+0x0/0xa
 [<ffffffff8021df55>] ? default_idle+0x31/0x55
 [<ffffffff8021df50>] ? default_idle+0x2c/0x55
 [<ffffffff8021df24>] ? default_idle+0x0/0x55
 [<ffffffff8021e00b>] ? cpu_idle+0x92/0xb8

Code: 41 14 85 c0 89 44 24 14 0f 84 9d 02 00 00 f7 d0 01 d6 41 89 d5 89 41 14 8b 41 14 89 34 24 e9 7e 02 00 00 49 63 c5 49 8b 5c c6 48 <f6> 43 1a 80 4c 8b a3 20 37 00 00 0f 85 62 02 00 00 31 c9 41 83
RIP  [<ffffffff806262c7>] mv_interrupt+0x21c/0x4cc
 RSP <ffff8102050bbec8>
CR2: 000000000000001a
---[ end trace 2583b5f7a5350584 ]---
Kernel panic - not syncing: Aiee, killing interrupt handler!

last_port already include port0 base.
this patch change use last_port directly, and move pp assignment later.

Signed-off-by: Yinghai Lu <yinghai.lu@sun.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2008-02-11 14:30:01 -05:00
Andrew Morton
8d8b60046d ata: drivers/ata/sata_mv.c needs dmapool.h
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>
2008-02-06 07:00:25 -05:00
Saeed Bishara
f351b2d638 sata_mv: Support SoC controllers
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>
2008-02-06 06:54:17 -05:00
Saeed Bishara
7bb3c5290c sata_mv: Remove PCI dependency
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>
2008-02-01 12:26:37 -05:00
Mark Lord
1fd2e1c242 sata_mv ncq Comments and version bump
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>
2008-02-01 11:29:49 -05:00
Mark Lord
a838b173c3 sata_mv ncq Remove post internal cmd op
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>
2008-02-01 11:29:49 -05:00
Mark Lord
138bfdd03f sata_mv ncq Enable NCQ operation
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>
2008-02-01 11:29:49 -05:00
Mark Lord
eb73d558d1 sata_mv ncq Introduce per-tag SG tables
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>
2008-02-01 11:29:49 -05:00
Mark Lord
da2fa9baf0 sata_mv ncq Use DMA memory pools for hardware memory tables
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>
2008-02-01 11:29:48 -05:00
Mark Lord
f273827e2a sata_mv ncq Restrict max sectors to 8-bits on GenII NCQ
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>
2008-02-01 11:29:47 -05:00
Mark Lord
cb92441973 sata_mv ncq Ignore response status LSB on NCQ
The lower 8 bits of response status are not valid for NCQ.

Signed-off-by: Mark Lord <mlord@pobox.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2008-02-01 11:29:47 -05:00
Mark Lord
8c0aeb4a48 sata_mv ncq Use hqtag instead of ioid
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>
2008-02-01 11:29:47 -05:00
Mark Lord
721091685f sata_mv ncq Add want ncq parameter for EDMA configuration
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>
2008-02-01 11:29:47 -05:00
Mark Lord
0c58912e19 sata_mv ncq Fix EDMA configuration
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>
2008-02-01 11:29:46 -05:00
Mark Lord
f630d56282 sata_mv ncq Rename base to port mmio
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>
2008-02-01 11:29:46 -05:00
Mark Lord
646a4da514 sata_mv ncq Mask transient IRQs
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>
2008-02-01 11:29:46 -05:00
Mark Lord
3606a38069 sata_mv ncq EH fixes
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>
2008-02-01 11:29:46 -05:00
Tejun Heo
ff2aeb1eb6 libata: convert to chained sg
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>
2008-01-23 05:24:14 -05:00
Mark Lord
4e5200334e sata_mv: improve warnings about Highpoint RocketRAID 23xx cards
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>
2007-12-17 20:33:12 -05:00
Mark Lord
306b30f74d sata_mv: Warn about HPT RocketRAID BIOS treatment of "Legacy" drives
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>
2007-12-04 14:07:52 -05:00
Mark Lord
02a121da5a sata_mv: Fix broken Marvell 7042 support.
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>
2007-12-01 17:44:10 -05:00
Saeed Bishara
2d79ab8fd7 sata_mv: fix compilation error when enabling DEBUG
use sstatus instead status.

Signed-off-by: Saeed Bishara <saeed@marvell.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-12-01 17:35:58 -05:00
Jeff Garzik
5796d1c4c8 [libata] Address some checkpatch-spotted issues
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2007-10-29 06:15:27 -04:00
Jeff Garzik
2dcb407e61 [libata] checkpatch-inspired cleanups
Tackle the relatively sane complaints of checkpatch --file.

The vast majority is indentation and whitespace changes, the rest are

* #include fixes
* printk KERN_xxx prefix addition
* BSS/initializer cleanups

Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2007-10-23 20:59:42 -04:00
Jeff Garzik
3be6cbd73f [libata] kill ata_sg_is_last()
Short term, this works around a bug introduced by early sg-chaining
work.

Long term, removing this function eliminates a branch from a hot
path loop in each scatter/gather table build.  Also, as this code
demonstrates, we don't need to _track_ the end of the s/g list, as
long as we mark it in some way.  And doing so programatically is nice.
So its a useful cleanup, regardless of its short term effects.

Based conceptually on a quick patch by Jens Axboe.

Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2007-10-18 16:21:18 -04:00
Tejun Heo
3f19859ee9 libata: update ata_dev_try_classify() arguments
Make ata_dev_try_classify() take a pointer to ata_device instead of
ata_port/port_number combination for consistency and add @present
argument.  @present indicates whether the device seems present during
reset.  It's the result of TF access during softreset and link
onlineness during hardreset.  @present will be used to improve
diagnostic failure handling.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-10-12 14:55:39 -04:00
Tejun Heo
cbcdd87593 libata: implement and use ata_port_desc() to report port configuration
Currently, port configuration reporting has the following problems.

* iomapped address is reported instead of raw address
* report contains irrelevant fields or lacks necessary fields for
  non-SFF controllers.
* host->irq/irq2 are there just for reporting and hacky.

This patch implements and uses ata_port_desc() and
ata_port_pbar_desc().  ata_port_desc() is almost identical to
ata_ehi_push_desc() except that it takes @ap instead of @ehi, has no
locking requirement, can only be used during host initialization and "
" is used as separator instead of ", ".  ata_port_pbar_desc() is a
helper to ease reporting of a PCI BAR or an offsetted address into it.

LLD pushes whatever description it wants using the above two
functions.  The accumulated description is printed on host
registration after "[S/P]ATA max MAX_XFERMODE ".

SFF init helpers and ata_host_activate() automatically add
descriptions for addresses and irq respectively, so only LLDs which
isn't standard SFF need to add custom descriptions.  In many cases,
such controllers need to report different things anyway.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-10-12 14:55:37 -04:00
Jeff Garzik
ac8869d56d [libata] Remove ->port_disable() hook
It was always set to ata_port_disable().  Removed the hook, and replaced
the very few ap->ops->port_disable() callsites with direct calls to
ata_port_disable().

Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-10-12 14:55:35 -04:00
Jeff Garzik
6d32d30f55 [libata] Remove ->irq_ack() hook, and ata_dummy_irq_on()
* ->irq_ack() is redundant to what the irq handler already
  performs... chk-status + irq-clear.  Furthermore, it is only
  called in one place, when screaming-irq-debugging is enabled,
  so we don't want to bother with a hook just for that.

* ata_dummy_irq_on() is only ever used in drivers that have
  no callpath reaching ->irq_on().  Remove .irq_on hook from
  those drivers, and the now-unused ata_dummy_irq_on()

Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-10-12 14:55:34 -04:00
Tejun Heo
cc0680a580 libata-link: linkify reset
Make reset methods and related functions deal with ata_link instead of
ata_port.

* ata_do_reset()
* ata_eh_reset()
* all prereset/reset/postreset methods and related functions

This patch introduces no behavior change.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-10-12 14:55:31 -04:00
Tejun Heo
936fd73286 libata-link: linkify PHY-related functions
Make the following PHY-related functions to deal with ata_link instead
of ata_port.

* sata_print_link_status()
* sata_down_spd_limit()
* ata_set_sata_spd_limit() and friends
* sata_link_debounce/resume()
* sata_scr_valid/read/write/write_flush()
* ata_link_on/offline()

This patch introduces no behavior change.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-10-12 14:55:30 -04:00
Tejun Heo
9af5c9c97d libata-link: introduce ata_link
Introduce ata_link.  It abstracts PHY and sits between ata_port and
ata_device.  This new level of abstraction is necessary to support
SATA Port Multiplier, which basically adds a bunch of links (PHYs) to
a ATA host port.  Fields related to command execution, spd_limit and
EH are per-link and thus moved to ata_link.

This patch only defines the host link.  Multiple link handling will be
added later.  Also, a lot of ap->link derefences are added but many of
them will be removed as each part is converted to deal directly with
ata_link instead of ata_port.

This patch introduces no behavior change.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Cc: James Bottomley <James.Bottomley@SteelEye.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-10-12 14:55:30 -04:00
Jeff Garzik
6c08772e49 [libata] sata_mv: more S/G fixes
* corruption fix: we only want the lower 16 bits of length (0 == 64kb)

* ditto: the upper layer sets max-phys-segments to LIBATA_MAX_PRD,
  so we must reset it to own hw-specific length.

* delete unused mv_fill_sg() return value

Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2007-10-12 00:16:23 -04:00
Jeff Garzik
baf14aa14e sata_mv: correct S/G table limits
The recent mv_fill_sg() rewrite, to fix a data corruption problem
related to IOMMU virtual merging, forgot to account for the
potentially-increased size of the scatter/gather table after its run.

Additionally, the DMA boundary is reduced from 0xffffffff to 0xffff
to more closely match the needs of mv_fill_sg().

Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-09 12:38:26 -07:00
Olof Johansson
4007b493ee libata: fix for sata_mv >64KB DMA segments
Fix bug in sata_mv for cases where the IOMMU layer has merged SG entries
to larger than 64KB. They need to be split up before being sent to
the driver.

Just for simplicity's sake, split up at 64K boundary instead of 64K size,
since that's what the common code does anyway.

Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-10-03 14:41:20 -04:00
Jeff Garzik
2a3103ce43 [libata] Bump driver versions
Bump the versions for drivers that were modified, but had not already
had a version number bump.

Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-08-31 04:54:06 -04:00
Alan Cox
cfbf723eb7 sata_mv: PCI IDs for Hightpoint RocketRaid 1740/1742
Underneath all the HPT packaging, PCI identifiers, binary driver modules
and stuff you find that ...

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-08-15 02:53:39 -04:00
Tejun Heo
da3dbb17a0 libata: make ->scr_read/write callbacks return error code
Convert ->scr_read/write callbacks to return error code to better
indicate failure.  This will help handling of SCR_NOTIFICATION.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-07-20 08:02:11 -04:00
Tejun Heo
b64bbc39f2 libata: improve EH report formatting
Requiring LLDs to format multiple error description messages properly
doesn't work too well.  Help LLDs a bit by making ata_ehi_push_desc()
insert ", " on each invocation.  __ata_ehi_push_desc() is the raw
version without the automatic separator.

While at it, make ehi_desc interface proper functions instead of
macros.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-07-20 08:02:11 -04:00
Jeff Garzik
0ea9e179f4 [libata] sata_mv: minor cleanups
* trim trailing whitespace
* document some flags, registers, and register bits
* fix locking around EDMA on/off and configuration
* continue replacing "constant OP var" with "var OP constant"
* use new pci_try_set_mwi()

Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-07-20 05:58:25 -04:00
Jeff Garzik
6c1153e00a [libata] sata_mv: Micro-optimization and cleanups
* Micro-optimization in the EDMA interrupt handling code
* s/EDMA_ERR_CRBQ_PAR/EDMA_ERR_CRQB_PAR/
* Document EDMA Error Interrupt Cause register bits

Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-07-20 05:58:23 -04:00
Jeff Garzik
ea8b4db97a [libata] sata_mv: use pci_try_set_mwi()
Because sometimes in life, it's ok to fail.

Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-07-17 16:18:00 -04:00
Linus Torvalds
21ba0f88ae Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/pci-2.6
* master.kernel.org:/pub/scm/linux/kernel/git/gregkh/pci-2.6: (34 commits)
  PCI: Only build PCI syscalls on architectures that want them
  PCI: limit pci_get_bus_and_slot to domain 0
  PCI: hotplug: acpiphp: avoid acpiphp "cannot get bridge info" PCI hotplug failure
  PCI: hotplug: acpiphp: remove hot plug parameter write to PCI host bridge
  PCI: hotplug: acpiphp: fix slot poweroff problem on systems without _PS3
  PCI: hotplug: pciehp: wait for 1 second after power off slot
  PCI: pci_set_power_state(): check for PM capabilities earlier
  PCI: cpci_hotplug: Convert to use the kthread API
  PCI: add pci_try_set_mwi
  PCI: pcie: remove SPIN_LOCK_UNLOCKED
  PCI: ROUND_UP macro cleanup in drivers/pci
  PCI: remove pci_dac_dma_... APIs
  PCI: pci-x-pci-express-read-control-interfaces cleanups
  PCI: Fix typo in include/linux/pci.h
  PCI: pci_ids, remove double or more empty lines
  PCI: pci_ids, add atheros and 3com_2 vendors
  PCI: pci_ids, reorder some entries
  PCI: i386: traps, change VENDOR to DEVICE
  PCI: ATM: lanai, change VENDOR to DEVICE
  PCI: Change all drivers to use pci_device->revision
  ...
2007-07-12 13:40:57 -07:00