Make a number of functions from libata-core.c and libata-eh.c global
to libata (drivers/ata/libata.h). These will be used by PMP.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Consider newly found class code while revalidating. PMP resetting
always results in valid class code and issuing PMP commands to
ATA/ATAPI device isn't very attractive. Add @new_class to
ata_dev_revalidate() and check class code for revalidation.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Update AN support in preparation of PMP support.
* s/ata_id_has_AN/ata_id_has_atapi_AN/
* add AN enabled reporting during configuration
* add err_mask to AN configuration failure reporting
* update LOCKING comment for ata_scsi_media_change_notify()
* check whether ATA dev is attached to SCSI dev ata_scsi_media_change_notify()
* set ATA_FLAG_AN in ahci and sata_sil24
Signed-off-by: Tejun Heo <htejun@gmail.com>
Cc: Kriten Carlson Accardi <kristen.c.accardi@intel.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Clear ARRE, we don't do auto-reallocation on reads, just on writes.
Also, hardcode the size of the array using RW_RECOVERY_MPAGE_LEN,
following the style of the surrounding code.
Signed-off-by: Jeff Garzik <jeff@garzik.org>
* SAT specifies that FORMAT UNIT should be translated into a series
of READ and WRITE commands that zero the ATA device. That is far too
cumbersome to bother with.
Since we don't actually format the device, the old behavior of
always returning success was inaccurate. Change FORMAT UNIT from
returning success immediately (old behavior) to always returning
an error (new behavior).
* Add some comments around SYNCHRONIZE CACHE
* Shuffle scsi command code around a bit, so that things are close
to alphabetic order.
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
A few pedantic apps care about missing or lame "mandatory" SCSI
commands, so
REQUEST SENSE -- as we autosense, R.S. just returns zeroes
SEND DIAGNOSTIC -- our default (no-op) self-test succeeds, all
other requests for testing fail.
Signed-off-by: Jeff Garzik <jeff@garzik.org>
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>
Reimplement port_map handling such that
1. Non-zero PORTS_IMPL value is always examined and used if consistent
with cap.n_ports.
2. When PI and cat.n_ports are inconsistent, honor cap.n_ports and
force port_map to be ((1 << cap.n_ports) - 1).
3. There were two separate places dealing with port_map. Unify them
to one.
As all newer ahci chips seem to get PI correct and older ones usually
have zero PI. Controllers with holes in PI are very unlikely to screw
up PI, so #2 makes more sense than following inconsistent PI.
Without this change, not setting ATA_FLAG_HONOR_PI when it's needed
results in weird detection failure. This changed logic should be able
to handle all known cases correctly automatically.
Verified on ICH6 (reports 0 PI), ICH8 (with holes in port_map), ICH9,
JMB360 and JMB363.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This patch reimplement ata_hpa_resize() such that...
* All HPA related decisions are made inside ata_hpa_resize() proper.
ata_hpa_resize() returns 0 if configuration can proceed, -errno if
device needs to be reset and reconfigured.
* All errors are handled properly. If HPA unlocking isn't requested,
HPA handling is disabled automatically to avoid unnecessary device
detection failure.
* Messages are trimmed. HPA detection message is printed only during
initial configuration. HPA unlocked message is printed only during
initial configuration or unlocking results in different size.
* Instead of using sectors returned in TF of SET_MAX, re-read IDENTIFY
data as that's the value the device is going to use.
* It's called early during ata_dev_configure() as IDENTIFY data might
change after resizing.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Merge ata_read_native_max_addres_ext() into ata_read_native_max_address()
and combine ata_set_native_max_address_ext() and
ata_set_native_max_address() into ata_set_max_sectors().
* reduce duplicate code
* return 0 or -errno depending on error conditions
* report if command fails
* use ATA_LBA instead of 0x40
This is in preparation of ata_hpa_resize() update.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Move ata_id_n_sectors() upward right below ata_id_c_string(). This is
to accomodate later changes.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This patch removes some incorrect formatting spaces and replaces them with tabs.
Signed-off-by: Jason Gaston <jason.d.gaston@intel.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
simple search-and-replace of direct scsi_cmnd access to
use the data buffer accessors.
Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This is a minimal patch needed to remove use of !use_sg
but it is not a complete clean up of the !use_sg paths.
Libata-core still has the qc->flags & ATA_QCFLAG_SG
and !qc->n_elem code paths. Perhaps an ata maintainer
would have a go at it.
- TODO: further cleanup of qc->flags & ATA_QCFLAG_SG
and !qc->n_elem code paths in libata-core
- TODO: Use scsi_dma_{map,unmap} where applicable.
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Some iomap functions were still using readl/writel and friends which
happens to work on most platforms but is not correct.
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Support the use of '*' in model_num and model_rev entries
in ata_device_blacklist[].
Based largely on David Milburn's "libata-core: support wildcard matching
in ata_blacklist_entry" patch.
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Updated and simplified driver. Use only register transfer timing for both
data and register transfers. This gives poorer performance in PIO1 and 2,
but should not be a problem in PIO3 and 4, correct me if I'm wrong :)
The driver works very we'll but I still wonder about the interrupts. I have
an interrupt line, that works nicely when POLLING flag is not set. The
problem is the number of interrupts that eat away my CPU cycles.
When using the POLLING flag there seem to be some interrupts that dosen't get
cleared. Furthermore the device dosen't drive INTRQ high, it stays at 2.5 volts
and generates a lot of interrupts due to ripple / noise. What to do?
Signed-off-by: Kristoffer Nyborg Gregertsen <kngregertsen@norway.atmel.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
EH is sometimes repeated without any error or action. For example,
this happens when probing IDENTIFY fails because of a phantom device.
In these cases, all the repeated EH does is making sure there is no
unhandled error or pending action and return. This repeation is
necessary to avoid losing any event which occurred while EH was in
progress.
Unfortunately, this dry run causes annonying "EH pending after
completion" message. This patch moves the repeat reporting into
ata_eh_report() such that it's more compact and skipped on dry runs.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Cc: Mikael Pettersson <mikep@it.uu.se>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
