Reimplement piix_sata_probe() such that it turns on PCS enable bits on
all avaliable ports and check present bits after a while to determine
device presence. This should help broken BIOSes. After device
presence detection is complete, PCS enable bits of unoccupied bits are
turned off unless the controller supports AHCI (ICH6/7 docs mandate
all enables bits are always set on AHCI capable controllers).
Note that PCS present bits are ignored on 6300ESB as described in the
datasheet. This should fix device detection problems reported with
the controller.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Replace combined mode handling via PIIX_COMB/COMB_PATA_P0 with proper
port map. PIIX now prints port configuration during initialization.
ATA_FLAG_SLAVE_POSS is now turned on for SATA ports only when the
slave device is actually avaliable.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Add PIIX_FLAG_IGN_PRESENT and SCR flags. Thi patch doesn't cause any
functional change. To be used by later init/scr updates.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Make port_info finer-grained. This patch doesn't cause any functional
change. Later init reimplementation will make use of it.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Now unneeded ATA_FLAG_SRST sneaked into sil_3512 port info while
merging upstream-fixes. Kill it.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Kill kfree(id) in failure path of ata_dev_read_id(). id is not
dynamically allocated yet.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Cc: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Add a new PCI ID for SiI 3124. Reported by Silicon Image.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Cc: Carlos Pardo <Carlos.Pardo@siliconimage.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
- change interface of the reset functions from Scsi_Cmnd to Scsi_Host.
- add functions with the original interface and rename the new
functions to reflect the new interface.
- call these from the pcmcia driver, thereby avoiding the need to
construct a (broken) Scsi_Cmnd from a Scsi_Host.
- just run the bh if the interrupt is from the controller and if so
ensure that it's only called once per interrupt.
Signed-off-by: Juergen E. Fischer <fischer@linux-buechse.de>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
sym2 boards without NVRAM currently negotiate narrow due to this missed
initialisation
Signed-off-by: Matthew Wilcox <matthew@wil.cx>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Stuborn as compilers are they don't like duplicate definitions.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Fix up an off by one error in calculating retries for scsi
commands. This bug was discovered when an SG_IO request
was sent to scsi core with retries = 0, causing the overall
timeout check to go off in scsi_softirq_done.
Signed-off-by: Brian King <brking@us.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
This patch hides the devices completely from the midlayer instead.
It requires the patch to handle the slave_configure failure I posted
earlier.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Current fc_transport consumers initially register rports
with an UNKNOWN role-state and follow-up with a call to
fc_remote_port_rolechg(). Modify code in
fc_remote_port_add() to scan the fc_host_rport_bindings()
array for consistent bindings regardless of role-type.
Original code would only scan bindings array for targets,
causing duplicate fc_remote_ports/rport-X:Y-Z entries to be
created for the yet-to-be-role-changed rports.
Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Remove a hack in the sg driver that alters the total buffer
length for SG_IO commands to ensure buffers are not odd byte
lengths. This breaks on the ipr driver since it requires the
request_bufflen to equal the length specified in the cdb.
The block layer SG_IO code does not appear to have this hack.
Signed-off-by: Douglas Gilbert <dougg@torque.net>
Signed-off-by: Brian King <brking@us.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
There's a problem in sd where we blindly believe the length of the
headers and block descriptors. Some devices return insane values for
these and cause our length to end up greater than the actual buffer
size, so check to make sure.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Also removed the buffer size magic number (512) and added DPOFUA of
zero to the defaults
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Silicon Image has disclosed a new sil3114/3152 errata and workaround
which causes the controller to return R_ERR on DMA activate FIS if the
FIS is received while the next PRD is being fetched. This patch
implements the workaround.
This errata results in lock up and doesn't trigger if m15w workaround
is in effect. We stopped applying m15w to 3512 and 3114 in 2.6.14-rc1
which makes 3512/3114 lock up with some drives on all kernel versions
since 2.6.14-rc1 upto now (2.6.16-rc4). This patch should fix the
regression.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
3512 is slightly different from 3112 errata-wise. Differentiate it.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
esp_reset didn't get fixed when the EH locking changed.
->eh_bus_reset_handler is now called without the host lock held.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Separate out ata_dev_read_id() from ata_dev_identify(). This is the
first half of splitting ata_dev_identify(). ata_dev_read_id() will
also be used for revalidation. This patch does not make any behavior
change.
ata_dev_read_id() doesn't modify any of libata-internal data
structures. It simply reads IDENTIFY page and returns error code on
failure. INIT_DEV_PARAMS and EDD wrong class code are also handled by
this function.
Re-reading IDENTIFY after INIT_DEV_PARAMS is performed by jumping to
retry: instead of calling ata_dev_reread_id(). This is done because
1. there's retry label anyway 2. ata_dev_reread_id() cannot be used
anywhere else so there's no reason to keep it.
This function is probably the place to set transfer mode to PIO0
before IDENTIFY. However, reset -> identify -> init_dev_params order
should be kept for pre-ATA4 devices so we cannot set transfer mode
before IDENTIFY for them. How do we know if a device is post-ATA4
before IDENTIFY?
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
This patch makes ata_sg_setup_one() trim sg entry (thus making
qc->n_elem zero) if padding results in zero length sg entry.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
For ATAPI commands, padding can reduce qc->n_elem by one and thus to
zero making assert(qc->n_elem > 0)'s in ata_fill_sg() and qs_fill_sg()
fail for legal commands. This patch fixes the assert()'s to take
qc->pad_len into account.
Although the condition check seems a bit excessive, as this part of
code isn't still stable yet, I think it's worth to keep those.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
The comment above ata_std_postreset() specified that setting cable
type is the responsibility of postreset(), which isn't possible /
optimal depending on controller / driver. This patch kills the
comment. Setting cable type is responsibility of ->probe_reset.
libata doesn't care whether it's done in probeinit, reset or
postreset.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
Update ata_dev_init_params() such that it doesn't disable port
directly but return with appropriate error mask on failure. This is
preparation for splitting ata_dev_identify(). Note that this patch
changes behavior of dev_init_params failure such that only failing
devices are taken offline not the whole port. This change is
intended.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
This patch renames ata_dev_id_[c_]string() to ata_id_[c_]string().
All other functions which read data from ATA ID data start with ata_id
and those two function names were getting too long.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
- Fix the array index value in ata_rwcmd_protocol() for the added FUA commands.
- Filter out ATAPI packet command error messages in ata_pio_error()
Signed-off-by: Albert Lee <albertcc@tw.ibm.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
* libata does not care about error interrupts, so handle them locally
* the interrupts that are ignored only appear to happen at init time
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
There's a bug in releasing scsi_device where the release function
actually frees the block queue. However, the block queue release
calls flush_work(), which requires process context (the scsi_device
structure may release from irq context). Update the release function
to invoke via the execute_in_process_context() API.
Also clean up the scsi_target structure releasing via this API.
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
We have several points in the SCSI stack (primarily for our device
functions) where we need to guarantee process context, but (given the
place where the last reference was released) we cannot guarantee this.
This API gets around the issue by executing the function directly if
the caller has process context, but scheduling a workqueue to execute
in process context if the caller doesn't have it. Unfortunately, it
requires memory allocation in interrupt context, but it's better than
what we have previously. The true solution will require a bit of
re-engineering, so isn't appropriate for 2.6.16.
Signed-off-by: James 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: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
If a low level driver wants to control max_sectors, it had to adjust
ap->host->max_sectors and set ATA_DFLAG_LOCK_SECTORS to tell
ata_scsi_slave_config not to override the limit. This is not only
cumbersome but also incorrect for hosts which support more than one
devices per port.
This patch adds per-device ->max_sectors. If the field is unset
(zero), libata core layer will adjust ->max_sectors according to
default rules. If the field is set, libata honors the setting.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
cdb_len is per-device property. Sharing cdb_len on ap results in
inaccurate configuration on revalidation and hotplugging. This patch
makes cdb_len per-device.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
ata_dev_knobble() unconditionally used the first device of the port to
determine whether a device is bridged or not. This causes bridge
limit to be incorrectly applied or unapplied for hosts with slave
devices (e.g. ata_piix).
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
EDD is never used with ->probe_reset. Don't handle EDD special case
in ata_dev_identify if ->probe_reset is in use.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
Make ata_dump_id() take @id instead of @dev. This is preparation for
splitting ata_dev_identify().
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
Separate out ATA major version calculation from ata_dev_identify()
into ata_id_major_version(). It's preparation for splitting
ata_dev_identify().
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
Separate out n_sectors calculation into ata_id_n_sectors() from
ata_dev_identify(). This will be used by revalidation.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
