Merge log_adapter prints to single one, remove version print and
meaningless VERSION defines.
Reviewed-by: Sergey Shtylyov <s.shtylyov@omp.ru>
Signed-off-by: Ondrej Zary <linux@zary.sk>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Use print_hex_* for debug dumps.
Signed-off-by: Ondrej Zary <linux@zary.sk>
Reviewed-by: Sergey Shtylyov <s.shtylyov@omp.ru>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Use dev_info/dev_err/dev_dbg instead of printk.
Reviewed-by: Sergey Shtylyov <s.shtylyov@omp.ru>
Signed-off-by: Ondrej Zary <linux@zary.sk>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
scratch parameter of log_adapter() is only used by bpck driver.
Remove it.
Reviewed-by: Sergey Shtylyov <s.shtylyov@omp.ru>
Signed-off-by: Ondrej Zary <linux@zary.sk>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
verbose parameter of log_adapter() is unused, remove it.
Reviewed-by: Sergey Shtylyov <s.shtylyov@omp.ru>
Signed-off-by: Ondrej Zary <linux@zary.sk>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Remove typedef struct PIA and use struct pi_adapter directly.
Fix formatting (excessive spaces) while at it.
Reviewed-by: Sergey Shtylyov <s.shtylyov@omp.ru>
Signed-off-by: Ondrej Zary <linux@zary.sk>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
device is never set in pata_parport, remove it.
Reviewed-by: Sergey Shtylyov <s.shtylyov@omp.ru>
Signed-off-by: Ondrej Zary <linux@zary.sk>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Only bpck driver uses devtype but it never gets set in pata_parport.
Remove it.
As most bpck devices are CD-ROMs, always run the code that depends
on devtype == PI_PCD.
Reviewed-by: Sergey Shtylyov <s.shtylyov@omp.ru>
Signed-off-by: Ondrej Zary <linux@zary.sk>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Introduce module_pata_parport_driver macro and use it in protocol
drivers to reduce boilerplate code. Remove paride_(un)register
compatibility defines.
Reviewed-by: Sergey Shtylyov <s.shtylyov@omp.ru>
Signed-off-by: Ondrej Zary <linux@zary.sk>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
bpck6 prints some useless messages on module_init. Remove them.
Reviewed-by: Sergey Shtylyov <s.shtylyov@omp.ru>
Signed-off-by: Ondrej Zary <linux@zary.sk>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Convert comm and kbic drivers to use standard swab16.
Remove pi_swab16 and pi_swab32.
Reviewed-by: Sergey Shtylyov <s.shtylyov@omp.ru>
Signed-off-by: Ondrej Zary <linux@zary.sk>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Only unit 0 is probed after registering a protocol driver or attaching
a new parport. This causes bpck and bpck6 devices to be not detected
automatically.
Probe all units just like in manual device creation (using sysfs).
Reviewed-by: Sergey Shtylyov <s.shtylyov@omp.ru>
Signed-off-by: Ondrej Zary <linux@zary.sk>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
CONFIG_PARIDE_EPATC8 was renamed to CONFIG_PATA_PARPORT_EPATC8 but
epat.c was not updated to reflect that. Update it.
Reported-by: Sergey Shtylyov <s.shtylyov@omp.ru>
Reviewed-by: Sergey Shtylyov <s.shtylyov@omp.ru>
Signed-off-by: Ondrej Zary <linux@zary.sk>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
When ida_alloc() fails, "pi" is not freed although the misleading
comment says otherwise.
Move the ida_alloc() call up so we really don't have to free "pi" in
case of ida_alloc() failure.
Also move ida_free() call from pi_remove_one() to
pata_parport_dev_release(). It was dereferencing already freed dev
pointer.
Testing revealed leak even in non-failure case which was tracked down
to missing put_device() call after bus_find_device_by_name(). As a
result, pata_parport_dev_release() was never called.
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <error27@gmail.com>
Link: https://lore.kernel.org/r/202303111822.IHNchbkp-lkp@intel.com/
Signed-off-by: Ondrej Zary <linux@zary.sk>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
When adapter is not found, pi->disconnect() is called without previous
pi->connect(). This results in error like this:
parport0: pata_parport tried to release parport when not owner
Add missing out_disconnect label and use it correctly.
Signed-off-by: Ondrej Zary <linux@zary.sk>
Reviewed-by: Sergey Shtylyov <s.shtylyov@omp.ru>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
The thermal zone device structure is exposed to the different drivers
and obviously they access the internals while that should be
restricted to the core thermal code.
In order to self-encapsulate the thermal core code, we need to prevent
the drivers accessing directly the thermal zone structure and provide
accessor functions to deal with.
Use the devdata accessor introduced in the previous patch.
No functional changes intended.
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Acked-by: Mark Brown <broonie@kernel.org>
Reviewed-by: Ido Schimmel <idosch@nvidia.com> #mlxsw
Acked-by: Gregory Greenman <gregory.greenman@intel.com> #iwlwifi
Acked-by: Sebastian Reichel <sebastian.reichel@collabora.com> #power_supply
Acked-by: Damien Le Moal <damien.lemoal@opensource.wdc.com> #ahci
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Commit 104ff59af7 ("ata: ahci: Add Tiger Lake UP{3,4} AHCI
controller") enabled low power mode for the Tiger Lake AHIC adapter in
the author system but created regressions for others. Revert this patch
for now until a better solution is found to make this adapter
eco-friendly.
Link: https://bugzilla.kernel.org/show_bug.cgi?id=217114
CC: stable@vger.kernel.org
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Updates to the usual drivers (ufs, lpfc, qla2xxx, libsas). The major
core change is a rework to remove the two helpers around
scsi_execute_cmd and use it as the only submission interface along
with other minor fixes and updates.
Signed-off-by: James E.J. Bottomley <jejb@linux.ibm.com>
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Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI updates from James Bottomley:
"Updates to the usual drivers (ufs, lpfc, qla2xxx, libsas).
The major core change is a rework to remove the two helpers around
scsi_execute_cmd and use it as the only submission interface along
with other minor fixes and updates"
* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (142 commits)
scsi: ufs: core: Fix an error handling path in ufshcd_read_desc_param()
scsi: ufs: core: Fix device management cmd timeout flow
scsi: aic94xx: Add missing check for dma_map_single()
scsi: smartpqi: Replace one-element array with flexible-array member
scsi: mpt3sas: Fix a memory leak
scsi: qla2xxx: Remove the unused variable wwn
scsi: ufs: core: Fix kernel-doc syntax
scsi: ufs: core: Add hibernation callbacks
scsi: snic: Fix memory leak with using debugfs_lookup()
scsi: ufs: core: Limit DMA alignment check
scsi: Documentation: Correct spelling
scsi: Documentation: Correct spelling
scsi: target: Documentation: Correct spelling
scsi: aacraid: Allocate cmd_priv with scsicmd
scsi: ufs: qcom: dt-bindings: Add SM8550 compatible string
scsi: ufs: ufs-qcom: Clear qunipro_g4_sel for HW version major 5
scsi: ufs: qcom: fix platform_msi_domain_free_irqs() reference
scsi: ufs: core: Enable DMA clustering
scsi: ufs: exynos: Fix the maximum segment size
scsi: ufs: exynos: Fix DMA alignment for PAGE_SIZE != 4096
...
* Small cleanup of the pata_octeon driver to drop a useless platform
callback, from Uwe.
* Simplify ata_scsi_cmd_error_handler() code using the fact that
ap->ops->error_handler is NULL most of the time, from Wenchao.
* Several patches improving libata error handling. This is in
preparation for supporting the command duration limits (CDL)
feature. The changes allow handling corner cases of ATA NCQ errors
which do not happen with regular drives but will be triggered with
CDL drives. From Niklas.
* Simplify the qc_fill_rtf operation, from me.
* Improve SCSI command translation for the
REPORT_SUPPORTED_OPERATION_CODES command, from me.
* Cleanup of libata FUA handling. This falls short of enabling FUA for
ATA drives that support it by default as there were concerns that
old drives would break. The series howeverfixes several issues with
the FUA support to ensure that FUA is reported as being supported
only for drives that can handle all possible write cases (NCQ and
non-NCQ). A check in the block layer is also added to ensure that we
never see read FUA commands (current behavior). From me.
* Several patches to move the old PARIDE (parallel port IDE) driver to
libata as pata_parport. Given that this driver also needs protocol
modules, the driver code resides in its own pata_parport directoy
under drivers/ata. From Ondrej.
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Merge tag 'ata-6.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/libata
Pull ATA updates from Damien Le Moal:
- Small cleanup of the pata_octeon driver to drop a useless platform
callback (Uwe)
- Simplify ata_scsi_cmd_error_handler() code using the fact that
ap->ops->error_handler is NULL most of the time (Wenchao)
- Several patches improving libata error handling. This is in
preparation for supporting the command duration limits (CDL) feature.
The changes allow handling corner cases of ATA NCQ errors which do
not happen with regular drives but will be triggered with CDL drives
(Niklas)
- Simplify the qc_fill_rtf operation (me)
- Improve SCSI command translation for REPORT_SUPPORTED_OPERATION_CODES
command (me)
- Cleanup of libata FUA handling.
This falls short of enabling FUA for ATA drives that support it by
default as there were concerns that old drives would break. The
series however fixes several issues with the FUA support to ensure
that FUA is reported as being supported only for drives that can
handle all possible write cases (NCQ and non-NCQ). A check in the
block layer is also added to ensure that we never see read FUA
commands (current behavior) (me)
- Several patches to move the old PARIDE (parallel port IDE) driver to
libata as pata_parport. Given that this driver also needs protocol
modules, the driver code resides in its own pata_parport directoy
under drivers/ata (Ondrej)
* tag 'ata-6.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/libata:
ata: pata_parport: Fix ida_alloc return value error check
drivers/block: Move PARIDE protocol modules to drivers/ata/pata_parport
drivers/block: Remove PARIDE core and high-level protocols
ata: pata_parport: add driver (PARIDE replacement)
ata: libata: exclude FUA support for known buggy drives
ata: libata: Fix FUA handling in ata_build_rw_tf()
ata: libata: cleanup fua support detection
ata: libata: Rename and cleanup ata_rwcmd_protocol()
ata: libata: Introduce ata_ncq_supported()
block: add a sanity check for non-write flush/fua bios
ata: libata-scsi: improve ata_scsiop_maint_in()
ata: libata-scsi: do not overwrite SCSI ML and status bytes
ata: libata: move NCQ related ATA_DFLAGs
ata: libata: respect successfully completed commands during errors
ata: libata: read the shared status for successful NCQ commands once
ata: libata: simplify qc_fill_rtf port operation interface
ata: scsi: rename flag ATA_QCFLAG_FAILED to ATA_QCFLAG_EH
ata: libata-eh: Cleanup ata_scsi_cmd_error_handler()
ata: octeon: Drop empty platform remove function
This is a follow-up to the deprecation of most of the old-style board
files that was merged in linux-6.0, removing them for good.
This branch is almost exclusively dead code removal based on those
annotations. Some device driver removals went through separate subsystem
trees, but the majority is in the same branch, in order to better handle
dependencies between the patches and avoid breaking bisection.
Unfortunately that leads to merge conflicts against other changes in the
subsystem trees, but they should all be trivial to resolve by removing
the files.
See commit 7d0d3fa733 ("Merge tag 'arm-boardfiles-6.0' of
git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc") for the
description of which machines were marked unused and are now removed. The
only removals that got postponed are Terastation WXL (mv78xx0) and
Jornada720 (StrongARM1100), which turned out to still have potential
users.
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Merge tag 'arm-boardfile-remove-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull ARM SoC boardfile updates from Arnd Bergmann
"Unused boardfile removal for 6.3
This is a follow-up to the deprecation of most of the old-style board
files that was merged in linux-6.0, removing them for good.
This branch is almost exclusively dead code removal based on those
annotations. Some device driver removals went through separate
subsystem trees, but the majority is in the same branch, in order to
better handle dependencies between the patches and avoid breaking
bisection.
Unfortunately that leads to merge conflicts against other changes in
the subsystem trees, but they should all be trivial to resolve by
removing the files.
See commit 7d0d3fa733 ("Merge tag 'arm-boardfiles-6.0' of
git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc") for the
description of which machines were marked unused and are now removed.
The only removals that got postponed are Terastation WXL (mv78xx0) and
Jornada720 (StrongARM1100), which turned out to still have potential
users"
* tag 'arm-boardfile-remove-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (91 commits)
mmc: omap: drop TPS65010 dependency
ARM: pxa: restore mfp-pxa320.h
usb: ohci-omap: avoid unused-variable warning
ARM: debug: remove references in DEBUG_UART_8250_SHIFT to removed configs
ARM: s3c: remove obsolete s3c-cpu-freq header
MAINTAINERS: adjust SAMSUNG SOC CLOCK DRIVERS after s3c24xx support removal
MAINTAINERS: update file entries after arm multi-platform rework and mach-pxa removal
ARM: remove CONFIG_UNUSED_BOARD_FILES
mfd: remove htc-pasic3 driver
w1: remove ds1wm driver
usb: remove ohci-tmio driver
fbdev: remove w100fb driver
fbdev: remove tmiofb driver
mmc: remove tmio_mmc driver
mfd: remove ucb1400 support
mfd: remove toshiba tmio drivers
rtc: remove v3020 driver
power: remove pda_power supply driver
ASoC: pxa: remove unused board support
pcmcia: remove unused pxa/sa1100 drivers
...
Fix a slew of kernel-doc warnings in pata_octeon_cf.c by changing
all "/**" comments to "/*" since they are not in kernel-doc format.
Fixes: 3c929c6f5a ("libata: New driver for OCTEON SOC Compact Flash interface (v7).")
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Reported-by: kernel test robot <lkp@intel.com>
Link: https://lore.kernel.org/all/202302101722.5O56RClE-lkp@intel.com/
Cc: David Daney <ddaney@caviumnetworks.com>
Cc: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Cc: Mauro Carvalho Chehab <mchehab@kernel.org>
Cc: linux-ide@vger.kernel.org
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Mark the Tiger Lake UP{3,4} AHCI controller as "low_power". This enables
S0ix to work out of the box. Otherwise this isn't working unless the
user manually sets /sys/class/scsi_host/*/link_power_management_policy.
Intel lists a total of 4 SATA controller IDs in [1] for those mobile
PCHs. This commit just adds the "AHCI" variant since I only tested
those.
[1]: https://cdrdv2.intel.com/v1/dl/getContent/631119
Signed-off-by: Simon Gaiser <simon@invisiblethingslab.com>
CC: stable@vger.kernel.org
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Samsung MZ7LH drives are spewing messages like this in to dmesg with AMD
SATA controllers:
ata1.00: exception Emask 0x0 SAct 0x7e0000 SErr 0x0 action 0x6 frozen
ata1.00: failed command: SEND FPDMA QUEUED
ata1.00: cmd 64/01:88:00:00:00/00:00:00:00:00/a0 tag 17 ncq dma 512 out
res 40/00:01:01:4f:c2/00:00:00:00:00/00 Emask
0x4 (timeout)
Since this was seen previously with SSD 840 EVO drives in
https://bugzilla.kernel.org/show_bug.cgi?id=203475 let's add the same
fix for these drives as the EVOs have, since they likely have very
similar firmwares.
Signed-off-by: Patrick McLean <chutzpah@gentoo.org>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
pi->dev.id is unsigned so error checking of ida_alloc return value does
not work. Fix it.
Signed-off-by: Ondrej Zary <linux@zary.sk>
Reviewed-by: Sergey Shtylyov <s.shtylyov@omp.ru>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Commit 2dc0b46b5e ("libata: sata_down_spd_limit should return if
driver has not recorded sstatus speed") changed the behavior of
sata_down_spd_limit() to return doing nothing if a drive does not report
a current link speed, to avoid reducing the link speed to the lowest 1.5
Gbps speed.
However, the change assumed that a speed was recorded before probing
(e.g. before a suspend/resume) and set in link->sata_spd. This causes
problems with adapters/drives combination failing to establish a link
speed during probe autonegotiation. One example reported of this problem
is an mvebu adapter with a 3Gbps port-multiplier box: autonegotiation
fails, leaving no recorded link speed and no reported current link
speed. Probe retries also fail as no action is taken by sata_set_spd()
after each retry.
Fix this by returning early in sata_down_spd_limit() only if we do have
a recorded link speed, that is, if link->sata_spd is not 0. With this
fix, a failed probe not leading to a recorded link speed is retried at
the lower 1.5 Gbps speed, with the link speed potentially increased
later on the second revalidate of the device if the device reports
that it supports higher link speeds.
Reported-by: Marius Dinu <marius@psihoexpert.ro>
Fixes: 2dc0b46b5e ("libata: sata_down_spd_limit should return if driver has not recorded sstatus speed")
Reviewed-by: Niklas Cassel <niklas.cassel@wdc.com>
Tested-by: Marius Dinu <marius@psihoexpert.ro>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Move PARIDE protocol modules out of drivers/block into
drivers/ata/pata_parport and update the CONFIG_ symbol names to
PATA_PARPORT.
[Damien]
The pata_parport driver file itsef is also moved together with the
protocol modules in drivers/ata/pata_parport.
Signed-off-by: Ondrej Zary <linux@zary.sk>
Acked-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Remove PARIDE core and high level protocols, taking care not to break
low-level drivers (used by pata_parport). Also update documentation.
Signed-off-by: Ondrej Zary <linux@zary.sk>
Acked-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
The pata_parport is a libata-based replacement of the old PARIDE
subsystem - driver for parallel port IDE devices.
It uses the original paride low-level protocol drivers but does not
need the high-level drivers (pd, pcd, pf, pt, pg). The IDE devices
behind parallel port adapters are handled by the ATA layer.
This will allow paride and its high-level drivers to be removed.
Unfortunately, libata drivers cannot sleep so pata_parport claims
parport before activating the ata host and keeps it claimed (and
protocol connected) until the ata host is removed. This means that
no devices can be chained (neither other pata_parport devices nor
a printer).
paride and pata_parport are mutually exclusive because the compiled
protocol drivers are incompatible.
Tested with:
- Imation SuperDisk LS-120 and HP C4381A (EPAT)
- Freecom Parallel CD (FRPW)
- Toshiba Mobile CD-RW 2793008 w/Freecom Parallel Cable rev.903 (FRIQ)
- Backpack CD-RW 222011 and CD-RW 19350 (BPCK6)
The following bugs in low-level protocol drivers were found and will
be fixed later:
Note: EPP-32 mode is buggy in EPAT - and also in all other protocol
drivers - they don't handle non-multiple-of-4 block transfers
correctly. This causes problems with LS-120 drive.
There is also another bug in EPAT: EPP modes don't work unless a 4-bit
or 8-bit mode is used first (probably some initialization missing?).
Once the device is initialized, EPP works until power cycle.
So after device power on, you have to:
echo "parport0 epat 0" >/sys/bus/pata_parport/new_device
echo pata_parport.0 >/sys/bus/pata_parport/delete_device
echo "parport0 epat 4" >/sys/bus/pata_parport/new_device
(autoprobe will initialize correctly as it tries the slowest modes
first but you'll get the broken EPP-32 mode)
Note: EPP modes are buggy in FRPW, only modes 0 and 1 work.
Signed-off-by: Ondrej Zary <linux@zary.sk>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Acked-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
The PXA palmld machine was removed, so the pata driver is no
longer used and can be removed. There is a chance that some of
this code might be useful for turning some of the other PXA
PCMCIA host drivers into PATA drivers, but it's clear that
it would not work unmodified, and it seems unlikely that
someone would do this work.
Cc: Alessandro Zummo <a.zummo@towertech.it>
Cc: Marek Vasut <marek.vasut@gmail.com>
Cc: linux-kernel@vger.kernel.org
Cc: linux-ide@vger.kernel.org
Acked-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Reviewed-by: Sergey Shtylyov <s.shtylyov@omp.ru>
Acked-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
This device was only used by the smdk6410 board file that is now
gone, so the driver can be removed as well.
Reviewed-by: Sergey Shtylyov <s.shtylyov@omp.ru>
Acked-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
scsi_execute_req() is going to be removed. Convert libata to
scsi_execute_cmd().
Signed-off-by: Mike Christie <michael.christie@oracle.com>
Reviewed-by: John Garry <john.g.garry@oracle.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Acked-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This driver uses MSR functions that aren't implemented under UML.
Avoid building it to prevent tripping up allyesconfig.
e.g.
/usr/lib/gcc/x86_64-pc-linux-gnu/12/../../../../x86_64-pc-linux-gnu/bin/ld: pata_cs5535.c:(.text+0x3a3): undefined reference to `__tracepoint_read_msr'
/usr/lib/gcc/x86_64-pc-linux-gnu/12/../../../../x86_64-pc-linux-gnu/bin/ld: pata_cs5535.c:(.text+0x3d2): undefined reference to `__tracepoint_write_msr'
/usr/lib/gcc/x86_64-pc-linux-gnu/12/../../../../x86_64-pc-linux-gnu/bin/ld: pata_cs5535.c:(.text+0x457): undefined reference to `__tracepoint_write_msr'
/usr/lib/gcc/x86_64-pc-linux-gnu/12/../../../../x86_64-pc-linux-gnu/bin/ld: pata_cs5535.c:(.text+0x481): undefined reference to `do_trace_write_msr'
/usr/lib/gcc/x86_64-pc-linux-gnu/12/../../../../x86_64-pc-linux-gnu/bin/ld: pata_cs5535.c:(.text+0x4d5): undefined reference to `do_trace_write_msr'
/usr/lib/gcc/x86_64-pc-linux-gnu/12/../../../../x86_64-pc-linux-gnu/bin/ld: pata_cs5535.c:(.text+0x4f5): undefined reference to `do_trace_read_msr'
/usr/lib/gcc/x86_64-pc-linux-gnu/12/../../../../x86_64-pc-linux-gnu/bin/ld: pata_cs5535.c:(.text+0x51c): undefined reference to `do_trace_write_msr'
Signed-off-by: Peter Foley <pefoley2@pefoley.com>
Reviewed-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Thread [1] reported back in 2012 problems with enabling FUA for 3
different drives. Add these drives to ata_device_blacklist[] to mark
them with the ATA_HORKAGE_NO_FUA flag. To be conservative and avoid
problems on old systems, the model number for the three new entries
are defined as to widely match all drives in the same product line.
[1]: https://lore.kernel.org/lkml/CA+6av4=uxu_q5U_46HtpUt=FSgbh3pZuAEY54J5_xK=MKWq-YQ@mail.gmail.com/
Suggested-by: Maciej S. Szmigiero <mail@maciej.szmigiero.name>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Maciej S. Szmigiero <maciej.szmigiero@oracle.com>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: Niklas Cassel <niklas.cassel@wdc.com>
If a user issues a write command with the FUA bit set for a device with
NCQ support disabled (that is, the device queue depth was set to 1), the
LBA 48 command WRITE DMA FUA EXT must be used. However,
ata_build_rw_tf() ignores this and first tests if LBA 28 can be used
based on the write command sector and number of blocks. That is, for
small FUA writes at low LBAs, ata_rwcmd_protocol() will cause the write
to fail.
Fix this by preventing the use of LBA 28 for any FUA write request.
Given that the WRITE MULTI FUA EXT command is marked as obsolete in the
ATA specification since ACS-3 (published in 2013), remove the
ATA_CMD_WRITE_MULTI_FUA_EXT command from the ata_rw_cmds array.
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: Niklas Cassel <niklas.cassel@wdc.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Move the detection of a device FUA support from
ata_scsiop_mode_sense()/ata_dev_supports_fua() to device scan time in
ata_dev_configure().
The function ata_dev_config_fua() is introduced to detect if a device
supports FUA and this support is indicated using the new device flag
ATA_DFLAG_FUA.
In order to blacklist known buggy devices, the horkage flag
ATA_HORKAGE_NO_FUA is introduced. Similarly to other horkage flags, the
libata.force= arguments "fua" and "nofua" are also introduced to allow
a user to control this horkage flag through the "force" libata
module parameter.
The ATA_DFLAG_FUA device flag is set only and only if all the following
conditions are met:
* libata.fua module parameter is set to 1
* The device supports the WRITE DMA FUA EXT command,
* The device is not marked with the ATA_HORKAGE_NO_FUA flag, either from
the blacklist or set by the user with libata.force=nofua
* The device supports NCQ (while this is not mandated by the standards,
this restriction is introduced to avoid problems with older non-NCQ
devices).
Enabling or diabling libata FUA support for all devices can now also be
done using the "force=[no]fua" module parameter when libata.fua is set
to 1.
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: Niklas Cassel <niklas.cassel@wdc.com>
Rename ata_rwcmd_protocol() to ata_set_rwcmd_protocol() to better
reflect the fact that this function sets a task file command and
protocol. The arguments order is also reversed and the function return
type changed to a bool to indicate if the command and protocol were set
correctly (instead of returning a completely arbitrary "-1" value.
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: Niklas Cassel <niklas.cassel@wdc.com>
Allow translation of REPORT_SUPPORTED_OPERATION_CODES commands using
the command format 0x3, that is, checking support for commands that are
identified using an opcode and a service action.
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Signed-off-by: Niklas Cassel <niklas.cassel@wdc.com>
For SCSI ML byte:
In the case where a command is completed via libata EH:
irq -> ata_qc_complete() -> ata_qc_schedule_eh()
irq done
... -> ata_do_eh() -> ata_eh_link_autopsy() -> ata_eh_finish() ->
ata_eh_qc_complete() -> __ata_eh_qc_complete() -> __ata_qc_complete() ->
qc->complete_fn() (ata_scsi_qc_complete()) -> ata_qc_done() ->
qc->scsidone() (empty stub)
... -> scsi_eh_finish_cmd() -> scsi_eh_flush_done_q() ->
scsi_finish_command()
ata_eh_link_autopsy() will call ata_eh_analyze_tf(), which calls
scsi_check_sense(), which sets the SCSI ML byte.
Since ata_scsi_qc_complete() is called after scsi_check_sense() when
a command is completed via libata EH, we cannot simply overwrite the
SCSI ML byte that was set earlier in the call chain.
For SCSI status byte:
When a SCSI command is prepared using scsi_prepare_cmd(), it sets
cmd->result to 0. (SAM_STAT_GOOD is defined as 0x0).
Likewise, when a command is requeued from SCSI EH, scsi_queue_insert()
is called, which sets cmd->result to 0.
A SCSI command thus always has a GOOD status by default when being
sent to libata.
If libata fetches sense data from the device, it will call
ata_scsi_set_sense(), which will set the status byte to
SAM_STAT_CHECK_CONDITION, if the caller deems that the status should be
a check condition.
ata_scsi_qc_complete() should therefore never overwrite the existing
status byte, because if it is != GOOD, it was set by libata itself,
for a reason.
For the host byte:
When libata abort commands, because of a NCQ error, it will schedule
SCSI EH for all QCs using blk_abort_request(), which will all end up in
scsi_timeout(), which will call scsi_abort_command(). scsi_timeout()
sets DID_TIME_OUT regardless if a command was aborted or timed out.
If we don't clear the DID_TIME_OUT byte for the QC that caused the
NCQ error, that QC will be reported as a timed out command, instead
of being reported as a NCQ error.
For a command that actually timed out, DID_TIME_OUT would be fine to
keep, but libata has its own way of detecting that a command timed out
(see ata_scsi_cmd_error_handler()), and sets AC_ERR_TIMEOUT if that is
the case. libata will retry timed out commands.
We could clear DID_TIME_OUT only for the QC that caused the NCQ error,
but since libata has its own way of detecting timeouts, simply clear it
always.
Note that the existing ata_scsi_qc_complete() code does:
cmd->result = SAM_STAT_CHECK_CONDITION or cmd->result = SAM_STAT_GOOD.
This WILL clear the host byte. So us clearing the host byte
unconditionally is in line with the existing libata behavior.
Signed-off-by: Niklas Cassel <niklas.cassel@wdc.com>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
In AHCI specification 1.3.1:
"5.5.3 Processing Completed Commands"
"For each port that has an interrupt pending:
1. Software determines the cause of the interrupt by reading the PxIS
register. It is possible for multiple bits to be set.
2. Software clears appropriate bits in the PxIS register corresponding
to the cause of the interrupt.
3. Software clears the interrupt bit in IS.IPS corresponding to the port.
4. If executing non-queued commands, software reads the PxCI register,
and compares the current value to the list of commands previously
issued by software that are still outstanding. If executing native
queued commands, software reads the PxSACT register and compares the
current value to the list of commands previously issued by software.
Software completes with success any outstanding command whose
corresponding bit has been cleared in the respective register. PxCI
and PxSACT are volatile registers; software should only use their
values to determine commands that have completed, not to determine
which commands have previously been issued.
5. If there were errors, noted in the PxIS register, software performs
error recovery actions (see section 6.2.2)."
The documentation for the PxSACT shadow register in AHCI:
"The device clears bits in this field by sending a Set Device Bits FIS
to the host. The HBA clears bits in this field that are set to ‘1’ in
the SActive field of the Set Device Bits FIS. The HBA only clears bits
that correspond to native queued commands that have completed
successfully."
Additionally, in SATA specification 3.5a:
"11.15 FPDMA QUEUED command protocol"
"DFPDMAQ11: ERROR
Halt command processing and transmit Set Device Bits FIS to host
with the ERR bit in Status field set to one, Interrupt bit set to one,
ATA error code set to one in the ERROR field, bits in ACT field cleared
to zero for any outstanding queued commands, and bits set to one
for any successfully completed queued commands that completion
notification not yet delivered."
I.e. even when the HBA triggers an error interrupt, the HBA will still
clear successfully completed commands in PxSACT. Commands that did not
complete successfully will still have its bit set in PxSACT.
(Which means the command that caused the NCQ error and queued commands
that had not yet finished at the time when the NCQ error occurred.)
Additionally, for a HBA that does not have the libata flag
AHCI_HFLAG_MULTI_MSI set, all ap->locks will point to host->lock, which
means that IRQs will be disabled for one port while another port's IRQ
handler is running. The HBA will still receive FISes from the device,
even if IRQs on the HBA itself are disabled. What can thus e.g. receive
a FIS that completes several commands successfully, followed by a FIS
that does (or does not) complete additional commands with the error bit
set, to indicate that at least one command was aborted.
Therefore, modify ahci_handle_port_interrupt() using the new helper
ahci_qc_complete() to complete the commands that have already been
signaled as successfully through a regular completion SDB FIS, as not
doing so would simply cause successfully completed commands to be
retried for no good reason.
Co-developed-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Signed-off-by: Niklas Cassel <niklas.cassel@wdc.com>
Currently, the status is being read for each QC, inside
ata_qc_complete(), which means that QCs being completed by
ata_qc_complete_multiple() (i.e. multiple QCs completed during a single
interrupt), can have different status and error bits set. This is
because the FIS Receive Area will get updated as soon as the HBA
receives a new FIS from the device in the NCQ case.
Here is an example of the problem:
ata14.00: ata_qc_complete_multiple: done_mask: 0x180000
qc tag: 19 cmd: 0x61 flags: 0x11b err_mask: 0x0 tf->status: 0x40
qc tag: 20 cmd: 0x61 flags: 0x11b err_mask: 0x0 tf->status: 0x43
A print in ata_qc_complete_multiple(), shows that done_mask is: 0x180000
which means that tag 19 and 20 were completed. Another print in
ata_qc_complete(), after the call to fill_result_tf(), shows that tag 19
and 20 have different status values, even though they were completed in
the same ata_qc_complete_multiple() call.
If PMP is not enabled, simply read the status and error once, before
calling ata_qc_complete() for each QC. Without PMP, we know that all QCs
must share the same status and error values.
If PMP is enabled, we also read the status before calling
ata_qc_complete(), however, we still read the status for each QC, since
the QCs can belong to different PMP links (which means that the QCs
does not necessarily share the same status and error values).
Do all this by introducing the new port operation .qc_ncq_fill_rtf. If
set, this operation is called in ata_qc_complete_multiple() to set the
result tf for all completed QCs signaled by the last SDB FIS received.
QCs that have their result tf filled are marked with the new flag
ATA_QCFLAG_RTF_FILLED so that any later execution of the qc_fill_rtf
port operation does nothing (e.g. when called from ata_qc_complete()).
Co-developed-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Signed-off-by: Niklas Cassel <niklas.cassel@wdc.com>
The boolean return value of the qc_fill_rtf operation is used nowhere.
Simplify this operation interface by making it a void function. All
drivers defining this operation are also updated.
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Signed-off-by: Niklas Cassel <niklas.cassel@wdc.com>
Reviewed-by: John Garry <john.g.garry@oracle.com>
The name ATA_QCFLAG_FAILED is misleading since it does not mean that a
QC completed in error, or that it didn't complete at all. It means that
libata decided to schedule EH for the QC, so the QC is now owned by the
libata error handler (EH).
The normal execution path is responsible for not accessing a QC owned
by EH. libata core enforces the rule by returning NULL from
ata_qc_from_tag() for QCs owned by EH.
It is quite easy to mistake that a QC marked with ATA_QCFLAG_FAILED was
an error. However, a QC that was actually an error is instead indicated
by having qc->err_mask set. E.g. when we have a NCQ error, we abort all
QCs, which currently will mark all QCs as ATA_QCFLAG_FAILED. However, it
will only be a single QC that is an error (i.e. has qc->err_mask set).
Rename ATA_QCFLAG_FAILED to ATA_QCFLAG_EH to more clearly highlight that
this flag simply means that a QC is now owned by EH. This new name will
not mislead to think that the QC was an error (which is instead
indicated by having qc->err_mask set).
This also makes it more obvious that the EH code skips all QCs that do
not have ATA_QCFLAG_EH set (rather than ATA_QCFLAG_FAILED), since the EH
code should simply only care about QCs that are owned by EH itself.
Signed-off-by: Niklas Cassel <niklas.cassel@wdc.com>
Reviewed-by: John Garry <john.g.garry@oracle.com>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
If ap->ops->error_handler is NULL just return. This patch also
fixes some comment style issue.
Signed-off-by: Wenchao Hao <haowenchao@huawei.com>
Reviewed-by: Niklas Cassel <niklas.cassel@wdc.com>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
A remove callback just returning 0 is equivalent to no remove callback
at all. So drop the useless function.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Reviewed-by: Niklas Cassel <niklas.cassel@wdc.com>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Since kernel 5.3.4 my laptop (ICH8M controller) does not see Kingston
SV300S37A60G SSD disk connected into a SATA connector on wake from
suspend. The problem was introduced in c312ef1763 ("libata/ahci: Drop
PCS quirk for Denverton and beyond"): the quirk is not applied on wake
from suspend as it originally was.
It is worth to mention the commit contained another bug: the quirk is
not applied at all to controllers which require it. The fix commit
09d6ac8dc5 ("libata/ahci: Fix PCS quirk application") landed in 5.3.8.
So testing my patch anywhere between commits c312ef1763 and
09d6ac8dc5 is pointless.
Not all disks trigger the problem. For example nothing bad happens with
Western Digital WD5000LPCX HDD.
Test hardware:
- Acer 5920G with ICH8M SATA controller
- sda: some SATA HDD connnected into the DVD drive IDE port with a
SATA-IDE caddy. It is a boot disk
- sdb: Kingston SV300S37A60G SSD connected into the only SATA port
Sample "dmesg --notime | grep -E '^(sd |ata)'" output on wake:
sd 0:0:0:0: [sda] Starting disk
sd 2:0:0:0: [sdb] Starting disk
ata4: SATA link down (SStatus 4 SControl 300)
ata3: SATA link down (SStatus 4 SControl 300)
ata1.00: ACPI cmd ef/03:0c:00:00:00:a0 (SET FEATURES) filtered out
ata1.00: ACPI cmd ef/03:42:00:00:00:a0 (SET FEATURES) filtered out
ata1: FORCE: cable set to 80c
ata5: SATA link down (SStatus 0 SControl 300)
ata3: SATA link down (SStatus 4 SControl 300)
ata3: SATA link down (SStatus 4 SControl 300)
ata3.00: disabled
sd 2:0:0:0: rejecting I/O to offline device
ata3.00: detaching (SCSI 2:0:0:0)
sd 2:0:0:0: [sdb] Start/Stop Unit failed: Result: hostbyte=DID_NO_CONNECT
driverbyte=DRIVER_OK
sd 2:0:0:0: [sdb] Synchronizing SCSI cache
sd 2:0:0:0: [sdb] Synchronize Cache(10) failed: Result:
hostbyte=DID_BAD_TARGET driverbyte=DRIVER_OK
sd 2:0:0:0: [sdb] Stopping disk
sd 2:0:0:0: [sdb] Start/Stop Unit failed: Result: hostbyte=DID_BAD_TARGET
driverbyte=DRIVER_OK
Commit c312ef1763 dropped ahci_pci_reset_controller() which internally
calls ahci_reset_controller() and applies the PCS quirk if needed after
that. It was called each time a reset was required instead of just
ahci_reset_controller(). This patch puts the function back in place.
Fixes: c312ef1763 ("libata/ahci: Drop PCS quirk for Denverton and beyond")
Signed-off-by: Adam Vodopjan <grozzly@protonmail.com>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
ata changes fro 6.2 include the ususal set of driver fixes and
improvements as well as several patches improving libata core in
preparation of the introduction of the support for the command duration
limits feature. In more details:
- Define the missing COMPLETED sense key in scsi header (from me).
- Several patches to improve libata handling of the status of
completed commands and the retry and sense data reported to the scsi
layer for failed commands. In particular, this widen the support for
NCQ autosense to all drives that support this feature instead of
restricting this feature use to ZAC drives only (from Niklas).
- Cleanup of the pata_mpc52xx and sata_dwc_460ex drivers to remove the
use of the deprecated NO_IRQ macro (from Christophe).
- Fix build dedependency on OF vs use of the of_match_ptr() macro to
avoid build errors with the sata_gemini and pata_ftide010 drivers
(from me).
- Some libata cleanups using the new helper function
ata_port_is_frozen() (from Niklas).
- Improve internal command handling by not retrying commands that
failed with a timeout (from Niklas).
- Remove code for several unused libata helper functions (from
Niklas).
- Remove the palmchip pata_bk3710 driver. A couple of other driver
removal should come in through the arm tree pull request (from
Arnd).
- Remove unused variable and function in the sata_dwc_460ex driver and
libata-sff code (from Colin and Sergey).
- Minor cleanup of the pata_ep93xx driver platform code (from
Minghao).
- Remove the unnecessary linux/msi.h include from the ahci driver
(from Thomas).
- Changes to libata enum constants definitions to avoid warnings with
gcc-13 (from Arnd).
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Merge tag 'ata-6.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/libata
Pull ata updates from Damien Le Moal:
"The ususal set of driver fixes and improvements as well as several
patches improving libata core in preparation of the introduction of
the support for the command duration limits feature. In more details:
- Define the missing COMPLETED sense key in scsi header (me)
- Several patches to improve libata handling of the status of
completed commands and the retry and sense data reported to the
scsi layer for failed commands. In particular, this widen the
support for NCQ autosense to all drives that support this feature
instead of restricting this feature use to ZAC drives only (Niklas)
- Cleanup of the pata_mpc52xx and sata_dwc_460ex drivers to remove
the use of the deprecated NO_IRQ macro (Christophe)
- Fix build dedependency on OF vs use of the of_match_ptr() macro to
avoid build errors with the sata_gemini and pata_ftide010 drivers
(me)
- Some libata cleanups using the new helper function
ata_port_is_frozen() (Niklas)
- Improve internal command handling by not retrying commands that
failed with a timeout (Niklas)
- Remove code for several unused libata helper functions (from
Niklas)
- Remove the palmchip pata_bk3710 driver. A couple of other driver
removal should come in through the arm tree pull request (from
Arnd)
- Remove unused variable and function in the sata_dwc_460ex driver
and libata-sff code (Colin and Sergey)
- Minor cleanup of the pata_ep93xx driver platform code (from
Minghao)
- Remove the unnecessary linux/msi.h include from the ahci driver
(Thomas)
- Changes to libata enum constants definitions to avoid warnings with
gcc-13 (Arnd)"
* tag 'ata-6.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/libata: (24 commits)
ata: ahci: fix enum constants for gcc-13
ata: libata: fix commands incorrectly not getting retried during NCQ error
ata: ahci: Remove linux/msi.h include
ata: sata_dwc_460ex: Check !irq instead of irq == NO_IRQ
ata: pata_ep93xx: use devm_platform_get_and_ioremap_resource()
ata: libata-sff: kill unused ata_sff_busy_sleep()
ata: sata_dwc_460ex: remove variable num_processed
ata: remove palmchip pata_bk3710 driver
ata: remove unused helper ata_id_flush_ext_enabled()
ata: remove unused helper ata_id_flush_enabled()
ata: remove unused helper ata_id_lba48_enabled()
ata: libata-core: do not retry reading the log on timeout
scsi: libsas: make use of ata_port_is_frozen() helper
ata: make use of ata_port_is_frozen() helper
ata: add ata_port_is_frozen() helper
ata: pata_ftide010: Remove build dependency on OF
ata: sata_gemini: Remove dependency on OF for compile tests
ata: pata_mpc52xx: Replace NO_IRQ with 0
ata: libahci: read correct status and error field for NCQ commands
ata: libata: fetch sense data for ATA devices supporting sense reporting
...
gcc-13 slightly changes the type of constant expressions that are defined
in an enum, which triggers a compile time sanity check in libata:
linux/drivers/ata/libahci.c: In function 'ahci_led_store':
linux/include/linux/compiler_types.h:357:45: error: call to '__compiletime_assert_302' declared with attribute error: BUILD_BUG_ON failed: sizeof(_s) > sizeof(long)
357 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
The new behavior is that sizeof() returns the same value for the
constant as it does for the enum type, which is generally more sensible
and consistent.
The problem in libata is that it contains a single enum definition for
lots of unrelated constants, some of which are large positive (unsigned)
integers like 0xffffffff, while others like (1<<31) are interpreted as
negative integers, and this forces the enum type to become 64 bit wide
even though most constants would still fit into a signed 32-bit 'int'.
Fix this by changing the entire enum definition to use BIT(x) in place
of (1<<x), which results in all values being seen as 'unsigned' and
fitting into an unsigned 32-bit type.
Link: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107917
Link: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107405
Reported-by: Luis Machado <luis.machado@arm.com>
Cc: linux-ide@vger.kernel.org
Cc: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Cc: stable@vger.kernel.org
Cc: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Tested-by: Luis Machado <luis.machado@arm.com>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
A NCQ error means that the device has aborted processing of all active
commands.
To get the single NCQ command that caused the NCQ error, host software has
to read the NCQ error log, which also takes the device out of error state.
When the device encounters a NCQ error, we receive an error interrupt from
the HBA, and call ata_do_link_abort() to mark all outstanding commands on
the link as ATA_QCFLAG_FAILED (which means that these commands are owned
by libata EH), and then call ata_qc_complete() on them.
ata_qc_complete() will call fill_result_tf() for all commands marked as
ATA_QCFLAG_FAILED.
The taskfile is simply the latest status/error as seen from the device's
perspective. The taskfile will have ATA_ERR set in the status field and
ATA_ABORTED set in the error field.
When we fill the current taskfile values for all outstanding commands,
that means that qc->result_tf will have ATA_ERR set for all commands
owned by libata EH.
When ata_eh_link_autopsy() later analyzes all commands owned by libata EH,
it will call ata_eh_analyze_tf(), which will check if qc->result_tf has
ATA_ERR set, if it does, it will set qc->err_mask (which marks the command
as an error).
When ata_eh_finish() later calls __ata_qc_complete() on all commands owned
by libata EH, it will call qc->complete_fn() (ata_scsi_qc_complete()),
ata_scsi_qc_complete() will call ata_gen_ata_sense() to generate sense
data if qc->err_mask is set.
This means that we will generate sense data for commands that should not
have any sense data set. Having sense data set for the non-failed commands
will cause SCSI to finish these commands instead of retrying them.
While this incorrect behavior has existed for a long time, this first
became a problem once we started reading the correct taskfile register in
commit 4ba09d2026 ("ata: libahci: read correct status and error field
for NCQ commands").
Before this commit, NCQ commands would read the taskfile values received
from the last non-NCQ command completion, which most likely did not have
ATA_ERR set, since the last non-NCQ command was most likely not an error.
Fix this by changing ata_eh_analyze_ncq_error() to mark all non-failed
commands as ATA_QCFLAG_RETRY, and change the loop in ata_eh_link_autopsy()
to skip commands marked as ATA_QCFLAG_RETRY.
While at it, make sure that we clear ATA_ERR and any error bits for all
commands except the actual command that caused the NCQ error, so that no
other libata code will be able to misinterpret these commands as errors.
Fixes: 4ba09d2026 ("ata: libahci: read correct status and error field for NCQ commands")
Signed-off-by: Niklas Cassel <niklas.cassel@wdc.com>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Nothing in this file needs anything from linux/msi.h
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Cc: linux-ide@vger.kernel.org
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
NO_IRQ is a relic from the old days. It is not used anymore in core
functions. By the way, function irq_of_parse_and_map() returns value 0
on error.
In some drivers, NO_IRQ is erroneously used to check the return of
irq_of_parse_and_map().
It is not a real bug today because the only architectures using the
drivers being fixed by this patch define NO_IRQ as 0, but there are
architectures which define NO_IRQ as -1. If one day those
architectures start using the non fixed drivers, there will be a
problem.
Long time ago Linus advocated for not using NO_IRQ, see
https://lkml.org/lkml/2005/11/21/221 . He re-iterated the same view
recently in https://lkml.org/lkml/2022/10/12/622
So test !irq instead of tesing irq == NO_IRQ.
And remove the fallback definition of NO_IRQ at the top of the file.
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Convert platform_get_resource(), devm_ioremap_resource() to a single
call to devm_platform_get_and_ioremap_resource(), as this is exactly
what this function does.
Reported-by: Zeal Robot <zealci@zte.com.cn>
Signed-off-by: Minghao Chi <chi.minghao@zte.com.cn>
Reviewed-by: Sergey Shtylyov <s.shtylyov@omp.ru>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
While the ATA specification states that a device should return command
aborted for all commands queued after the device has entered error state,
since ATA only keeps the sense data for the latest command (in non-NCQ
case), we really don't want to send block layer commands to the device
after it has entered error state. (Only ATA EH commands should be sent,
to read the sense data etc.)
Currently, scsi_queue_rq() will check if scsi_host_in_recovery()
(state is SHOST_RECOVERY), and if so, it will _not_ issue a command via:
scsi_dispatch_cmd() -> host->hostt->queuecommand() (ata_scsi_queuecmd())
-> __ata_scsi_queuecmd() -> ata_scsi_translate() -> ata_qc_issue()
Before commit e494f6a728 ("[SCSI] improved eh timeout handler"),
when receiving a TFES error IRQ, the call chain looked like this:
ahci_error_intr() -> ata_port_abort() -> ata_do_link_abort() ->
ata_qc_complete() -> ata_qc_schedule_eh() -> blk_abort_request() ->
blk_rq_timed_out() -> q->rq_timed_out_fn() (scsi_times_out()) ->
scsi_eh_scmd_add() -> scsi_host_set_state(shost, SHOST_RECOVERY)
Which meant that as soon as an error IRQ was serviced, SHOST_RECOVERY
would be set.
However, after commit e494f6a728 ("[SCSI] improved eh timeout handler"),
scsi_times_out() will instead call scsi_abort_command() which will queue
delayed work, and the worker function scmd_eh_abort_handler() will call
scsi_eh_scmd_add(), which calls scsi_host_set_state(shost, SHOST_RECOVERY).
So now, after the TFES error IRQ has been serviced, we need to wait for
the SCSI workqueue to run its work before SHOST_RECOVERY gets set.
It is worth noting that, even before commit e494f6a728 ("[SCSI] improved
eh timeout handler"), we could receive an error IRQ from the time when
scsi_queue_rq() checks scsi_host_in_recovery(), to the time when
ata_scsi_queuecmd() is actually called.
In order to handle both the delayed setting of SHOST_RECOVERY and the
window where we can receive an error IRQ, add a check against
ATA_PFLAG_EH_PENDING (which gets set when servicing the error IRQ),
inside ata_scsi_queuecmd() itself, while holding the ap->lock.
(Since the ap->lock is held while servicing IRQs.)
Fixes: e494f6a728 ("[SCSI] improved eh timeout handler")
Signed-off-by: Niklas Cassel <niklas.cassel@wdc.com>
Tested-by: John Garry <john.g.garry@oracle.com>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
In ata_tdev_add(), the return value of transport_add_device() is
not checked. As a result, it causes null-ptr-deref while removing
the module, because transport_remove_device() is called to remove
the device that was not added.
Unable to handle kernel NULL pointer dereference at virtual address 00000000000000d0
CPU: 13 PID: 13603 Comm: rmmod Kdump: loaded Tainted: G W 6.1.0-rc3+ #36
pstate: 60400009 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : device_del+0x48/0x3a0
lr : device_del+0x44/0x3a0
Call trace:
device_del+0x48/0x3a0
attribute_container_class_device_del+0x28/0x40
transport_remove_classdev+0x60/0x7c
attribute_container_device_trigger+0x118/0x120
transport_remove_device+0x20/0x30
ata_tdev_delete+0x24/0x50 [libata]
ata_tlink_delete+0x40/0xa0 [libata]
ata_tport_delete+0x2c/0x60 [libata]
ata_port_detach+0x148/0x1b0 [libata]
ata_pci_remove_one+0x50/0x80 [libata]
ahci_remove_one+0x4c/0x8c [ahci]
Fix this by checking and handling return value of transport_add_device()
in ata_tdev_add(). In the error path, device_del() is called to delete
the device which was added earlier in this function, and ata_tdev_free()
is called to free ata_dev.
Fixes: d9027470b8 ("[libata] Add ATA transport class")
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
In ata_tlink_add(), the return value of transport_add_device() is
not checked. As a result, it causes null-ptr-deref while removing
the module, because transport_remove_device() is called to remove
the device that was not added.
Unable to handle kernel NULL pointer dereference at virtual address 00000000000000d0
CPU: 33 PID: 13850 Comm: rmmod Kdump: loaded Tainted: G W 6.1.0-rc3+ #12
pstate: 60400009 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : device_del+0x48/0x39c
lr : device_del+0x44/0x39c
Call trace:
device_del+0x48/0x39c
attribute_container_class_device_del+0x28/0x40
transport_remove_classdev+0x60/0x7c
attribute_container_device_trigger+0x118/0x120
transport_remove_device+0x20/0x30
ata_tlink_delete+0x88/0xb0 [libata]
ata_tport_delete+0x2c/0x60 [libata]
ata_port_detach+0x148/0x1b0 [libata]
ata_pci_remove_one+0x50/0x80 [libata]
ahci_remove_one+0x4c/0x8c [ahci]
Fix this by checking and handling return value of transport_add_device()
in ata_tlink_add().
Fixes: d9027470b8 ("[libata] Add ATA transport class")
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
In ata_tport_add(), the return value of transport_add_device() is
not checked. As a result, it causes null-ptr-deref while removing
the module, because transport_remove_device() is called to remove
the device that was not added.
Unable to handle kernel NULL pointer dereference at virtual address 00000000000000d0
CPU: 12 PID: 13605 Comm: rmmod Kdump: loaded Tainted: G W 6.1.0-rc3+ #8
pstate: 60400009 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : device_del+0x48/0x39c
lr : device_del+0x44/0x39c
Call trace:
device_del+0x48/0x39c
attribute_container_class_device_del+0x28/0x40
transport_remove_classdev+0x60/0x7c
attribute_container_device_trigger+0x118/0x120
transport_remove_device+0x20/0x30
ata_tport_delete+0x34/0x60 [libata]
ata_port_detach+0x148/0x1b0 [libata]
ata_pci_remove_one+0x50/0x80 [libata]
ahci_remove_one+0x4c/0x8c [ahci]
Fix this by checking and handling return value of transport_add_device()
in ata_tport_add().
Fixes: d9027470b8 ("[libata] Add ATA transport class")
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
In the error path in ata_tport_add(), when calling put_device(),
ata_tport_release() is called, it will put the refcount of 'ap->host'.
And then ata_host_put() is called again, the refcount is decreased
to 0, ata_host_release() is called, all ports are freed and set to
null.
When unbinding the device after failure, ata_host_stop() is called
to release the resources, it leads a null-ptr-deref(), because all
the ports all freed and null.
Unable to handle kernel NULL pointer dereference at virtual address 0000000000000008
CPU: 7 PID: 18671 Comm: modprobe Kdump: loaded Tainted: G E 6.1.0-rc3+ #8
pstate: 80400009 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : ata_host_stop+0x3c/0x84 [libata]
lr : release_nodes+0x64/0xd0
Call trace:
ata_host_stop+0x3c/0x84 [libata]
release_nodes+0x64/0xd0
devres_release_all+0xbc/0x1b0
device_unbind_cleanup+0x20/0x70
really_probe+0x158/0x320
__driver_probe_device+0x84/0x120
driver_probe_device+0x44/0x120
__driver_attach+0xb4/0x220
bus_for_each_dev+0x78/0xdc
driver_attach+0x2c/0x40
bus_add_driver+0x184/0x240
driver_register+0x80/0x13c
__pci_register_driver+0x4c/0x60
ahci_pci_driver_init+0x30/0x1000 [ahci]
Fix this by removing redundant ata_host_put() in the error path.
Fixes: 2623c7a5f2 ("libata: add refcounting to ata_host")
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Nobody seems to call ata_sff_busy_sleep(), so we can get rid of it...
Signed-off-by: Sergey Shtylyov <s.shtylyov@omp.ru>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
SAT SCSI/ATA Translation specification requires SCSI SYNCHRONIZE CACHE
(10) and (16) commands both shall be translated to ATA flush command.
Also, ZBC Zoned Block Commands specification mandates SYNCHRONIZE CACHE
(16) command support. However, libata translates only SYNCHRONIZE CACHE
(10). This results in SYNCHRONIZE CACHE (16) command failures on SATA
drives and then libata translation does not conform to ZBC. To avoid the
failure, add support for SYNCHRONIZE CACHE (16).
Signed-off-by: Shin'ichiro Kawasaki <shinichiro.kawasaki@wdc.com>
Cc: stable@vger.kernel.org
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
If devm_platform_ioremap_resource() fails, it never return
NULL pointer, replace the check with IS_ERR().
Fixes: 57bf0f5a16 ("ARM: pxa: use pdev resource for palmld mmio")
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Reviewed-by: Sergey Shtylyov <s.shtylyov@omp.ru>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Clang gives a warning when compiling pata_legacy.c with 'make W=1' about
the 'rt' local variable in pdc20230_set_piomode() being set but unused.
Quite obviously, there is an outb() call missing to write back the updated
variable. Moreover, checking the docs by Petr Soucek revealed that bitwise
AND should have been done with a negated timing mask and the master/slave
timing masks were swapped while updating...
Fixes: 669a5db411 ("[libata] Add a bunch of PATA drivers.")
Reported-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Signed-off-by: Sergey Shtylyov <s.shtylyov@omp.ru>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Variable num_processed is just being incremented and it's never used
anywhere else. The variable and the increment are redundant so
remove it.
Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
This device was used only on the davinci dm644x platform that
is now gone, and no references to the device remain in the
kernel.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Marc Zyngier <maz@kernel.org>
Acked-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Reviewed-by: Sergey Shtylyov <s.shtylyov@omp.ru>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
ata_read_log_page() first tries to read the log using READ LOG DMA EXT.
If that fails it will instead try to read the log using READ LOG EXT.
ata_exec_internal_sg() is synchronous, so it will wait for the command to
finish. If we actually got an error back from the device, it is correct
to retry. However, if the command timed out, ata_exec_internal_sg() will
freeze the port.
There is no point in retrying if the port is frozen, as
ata_exec_internal_sg() will return AC_ERR_SYSTEM on a frozen port,
without ever sending the command down to the drive.
Therefore, avoid retrying if the first command froze the port, as that
will result in a misleading AC_ERR_SYSTEM error print, instead of printing
the error that actually caused the port to be frozen (AC_ERR_TIMEOUT).
Signed-off-by: Niklas Cassel <niklas.cassel@wdc.com>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Clean up the code by making use of the newly introduced
ata_port_is_frozen() helper function.
Signed-off-by: Niklas Cassel <niklas.cassel@wdc.com>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
The pata_ftide010 can be built without CONFIG_OF being enabled, as long
as the macro of_match_ptr() is not used when initializing the platform
driver .of_match_table field.
Remove the use of this macro and the build dependency on OF.
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Sergey Shtylyov <s.shtylyov@omp.ru>
If CONFIG_OF is disabled, then using the macro of_match_ptr() results
in the gemini_sata_of_match variable being unused, which generates a
compilation warning and a compilation error if CONFIG_WERROR is enabled.
Removing the use of this macro by directly assigning the
gemini_sata_of_match match table to the .of_match_table field in the
platform driver definition allows removing the dependency on OF for
compile tests, thus improving compile test coverage.
Fixes: f7220eac75 ("ata: Kconfig: fix sata gemini compile test condition")
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
When compiling with clang and W=1, the following warning is generated:
drivers/ata/ahci_qoriq.c:283:22: error: cast to smaller integer type
'enum ahci_qoriq_type' from 'const void *'
[-Werror,-Wvoid-pointer-to-enum-cast]
qoriq_priv->type = (enum ahci_qoriq_type)of_id->data;
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Fix this by using a cast to unsigned long to match the "void *" type
size of of_id->data.
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
When compiling with clang and W=1, the following warning is generated:
drivers/ata/ahci_imx.c:1070:18: error: cast to smaller integer type
'enum ahci_imx_type' from 'const void *'
[-Werror,-Wvoid-pointer-to-enum-cast]
imxpriv->type = (enum ahci_imx_type)of_id->data;
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Fix this by using a cast to unsigned long to match the "void *" type
size of of_id->data.
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
When compiling with clang and W=1, the following warning is generated:
drivers/ata/ahci_xgene.c:788:14: error: cast to smaller integer type
'enum xgene_ahci_version' from 'const void *'
[-Werror,-Wvoid-pointer-to-enum-cast]
version = (enum xgene_ahci_version) of_devid->data;
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Fix this by using a cast to unsigned long to match the "void *" type
size of of_devid->data.
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
When compiling with clang and W=1, the following warning is generated:
drivers/ata/ahci_brcm.c:451:18: error: cast to smaller integer type
'enum brcm_ahci_version' from 'const void *'
[-Werror,-Wvoid-pointer-to-enum-cast]
priv->version = (enum brcm_ahci_version)of_id->data;
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Fix this by using a cast to unsigned long to match the "void *" type
size of of_id->data.
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
When compiling with clang and W=1, the following warning is generated:
drivers/ata/sata_rcar.c:878:15: error: cast to smaller integer type
'enum sata_rcar_type' from 'const void *'
[-Werror,-Wvoid-pointer-to-enum-cast]
priv->type = (enum sata_rcar_type)of_device_get_match_data(dev);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Fix this by using a cast to unsigned long to match the "void *" type
size returned by of_device_get_match_data().
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Sergey Shtylyov <s.shtylyov@omp.ru>
If CONFIG_OF is disabled and the ahci_st driver is builtin (or
CONFIG_MODULES is disabled), then using the macro of_match_ptr()
results in the st_ahci_match variable being unused, which generates a
compilation warning and a compilation error if CONFIG_WERROR is enabled.
Fix this by directly assigning st_ahci_match to .of_match_table in the
st_ahci_driver platform driver definition.
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
'ahci:' is an invalid prefix, preventing the module from autoloading.
Fix this by using the 'platform:' prefix and DRV_NAME.
Fixes: 9e54eae23b ("ahci_imx: add ahci sata support on imx platforms")
Cc: stable@vger.kernel.org
Signed-off-by: Alexander Stein <alexander.stein@ew.tq-group.com>
Reviewed-by: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
NO_IRQ is used to check the return of irq_of_parse_and_map().
On some architecture NO_IRQ is 0, on other architectures it is -1.
irq_of_parse_and_map() returns 0 on error, independent of NO_IRQ.
So use 0 instead of using NO_IRQ.
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Reviewed-by: Sergey Shtylyov <s.shtylyov@omp.ru>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Currently, for PIO commands, ahci_qc_fill_rtf() reads the status and
error fields from the PIO Setup FIS area of the Received FIS Structure.
For any non-PIO command, ahci_qc_fill_rtf() currently reads the status
and error fields from the D2H Register FIS area of the Received FIS
Structure. This is simply not correct.
According to the SATA 3.5a specification:
11.10 DMA DATA-IN command protocol and 11.11 DMA DATA-OUT command
protocol: READ DMA and WRITE DMA (non-NCQ commands) will end with
the Send_status state, which transmits a Register D2H FIS.
Likewise, in:
11.15 FPDMA QUEUED command protocol: READ FPDMA QUEUED and WRITE FPDMA
QUEUED (NCQ commands) will end with the SendStatus state, which
transmits a Set Device Bits FIS.
So, for NCQ commands, there is never a D2H Register FIS sent.
Reading the status and error fields from the D2H Register FIS area
for a NCQ command, will result in us returning the status and error
values for the last non-NCQ command, which is incorrect.
Update ahci_qc_fill_rtf() to read the status and error fields from
the correct area in the Received FIS Structure for NCQ commands.
Once reason why this has not been detected before, could be because,
in case of an NCQ error, ata_eh_analyze_ncq_error() will overwrite
the (incorrect) status and error values set by ahci_qc_fill_rtf().
However, even successful NCQ commands can have bits set in the status
field (e.g. the sense data available bit), so it is mandatory to read
the status from the correct area also for NCQ commands.
Signed-off-by: Niklas Cassel <niklas.cassel@wdc.com>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Currently, the sense data reporting feature set is enabled for all ATA
devices which supports the feature set (ata_id_has_sense_reporting()),
see ata_dev_config_sense_reporting().
However, even if sense data reporting is enabled, and the device
indicates that sense data is available, the sense data is only fetched
for ATA ZAC devices. For regular ATA devices, the available sense data
is never fetched, it is simply ignored. Instead, libata will use the
ERROR + STATUS fields and map them to a very generic and reduced set
of sense data, see ata_gen_ata_sense() and ata_to_sense_error().
When sense data reporting was first implemented, regular ATA devices
did fetch the sense data from the device. However, this was restricted
to only ATA ZAC devices in commit ca156e006a ("libata: don't request
sense data on !ZAC ATA devices").
With recent changes related to sense data and NCQ autosense, we want
to, once again, fetch the sense data for all ATA devices supporting
sense reporting.
ata_gen_ata_sense() should only be used for devices that don't support
the sense data reporting feature set.
hopefully the features will be more robust this time around.
It is not just ZAC, many new ATA features, e.g. Command Duration
Limits, relies on working NCQ autosense and sense data. Therefore,
it is not really an option to avoid fetching the sense data forever.
If we encounter a device that is misbehaving because the sense data is
actually fetched, then that device should be quirked such that it
never enables the sense data reporting feature set in the first place,
since such a device is obviously not compliant with the specification.
The order in which we will try to add sense data to a scsi_cmnd:
1) NCQ autosense (if supported) - ata_eh_analyze_ncq_error()
2) REQUEST SENSE DATA EXT (if supported) - ata_eh_request_sense()
3) error + status field translation - ata_gen_ata_sense(), called
by ata_scsi_qc_complete() if neither 1) or 2) is supported.
Signed-off-by: Niklas Cassel <niklas.cassel@wdc.com>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
While this shouldn't be needed if all devices that claim that they
support NCQ autosense (ata_id_has_ncq_autosense()) and/or the sense
data reporting feature (ata_id_has_sense_reporting()), actually
supported those features.
However, there might be some old ATA devices that either have these
bits set, even when they don't support those features, or they simply
return malformed data when using those features.
These devices should be quirked, but in order to try to minimize the
impact for the users of these such devices, it was suggested by Damien
Le Moal that it might be a good idea to sanity check the sense data
received from the device. If the sense data looks bogus, then the
sense data is never added to the scsi_cmnd command.
Introduce a new function, ata_scsi_sense_is_valid(), and use it in all
places where sense data is received from the device.
Suggested-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Signed-off-by: Niklas Cassel <niklas.cassel@wdc.com>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
ata_eh_request_sense() returns early when flag ATA_QCFLAG_SENSE_VALID is
set. However, since the call to ata_eh_request_sense() is guarded by a
ATA_SENSE bit conditional, the logical conclusion for the reader is that
all checks are performed at the call site.
Highlight the fact that the sense data will not be fetched if flag
ATA_QCFLAG_SENSE_VALID is already set by adding an additional check to
the existing guarding conditional. No functional change.
Additionally, add a comment explaining that ata_eh_analyze_tf() will
only fetch the sense data if:
-It was a non-NCQ command that failed, or
-It was a NCQ command that failed, but the sense data was not included
in the NCQ command error log (i.e. NCQ autosense is not supported).
Signed-off-by: Niklas Cassel <niklas.cassel@wdc.com>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Currently, the logic if we should call ata_scsi_set_sense()
(and set flag ATA_QCFLAG_SENSE_VALID to indicate that we have
successfully added sense data to the struct ata_queued_cmd)
looks like this:
if (dev->class == ATA_DEV_ZAC &&
((qc->result_tf.status & ATA_SENSE) || qc->result_tf.auxiliary))
The problem with this is that a drive can support the NCQ command
error log without supporting NCQ autosense.
On such a drive, if the failing command has sense data, the status
field in the NCQ command error log will have the ATA_SENSE bit set.
It is just that this sense data is not included in the NCQ command
error log when NCQ autosense is not supported. Instead the sense
data has to be fetched using the REQUEST SENSE DATA EXT command.
Therefore, we should only add the sense data if the drive supports
NCQ autosense AND the ATA_SENSE bit is set in the status field.
Fix this, and at the same time, remove the duplicated ATA_DEV_ZAC
check. The struct ata_taskfile supplied to ata_eh_read_log_10h()
is memset:ed before calling the function, so simply checking if
qc->result_tf.auxiliary is set is sufficient to tell us that the
log actually contained sense data.
Fixes: d238ffd59d ("libata: do not attempt to retrieve sense code twice")
Signed-off-by: Niklas Cassel <niklas.cassel@wdc.com>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
* Print the timeout value for internal command failures due to a
timeout (from Tomas).
* Improve parameter names in ata_dev_set_feature() to clarify this
function use (from Niklas).
* Improve the ahci driver low power mode setting initialization to allow
more flexibility for the user (from Rafael).
* Several patches to remove redundant variables in libata-core,
libata-eh and the pata_macio driver and to fix typos in comments (from
Jinpeng, Shaomin, Ye).
* Some code simplifications and macro renaming (for clarity) in various
functions of libata-core (from me).
* Add a missing check for a potential failure of sata_scr_read() in
sata_print_link_status() (from Li).
* Cleanup of libata Kconfig PATA_PLATFORM and PATA_OF_PLATFORM options
(from Lukas).
* Cleanups of ata dt-bindings and improvements of libahci_platform, ahci
and libahci code (from Serge)
* New driver for Synopsys AHCI SATA controllers, based of the generic
ahci code (from Serge). One compilation warning fix is added for this
driver (from me).
* Several fixes to macros used to discover a drive capabilities to be
consistent with the ACS specifications (from Niklas).
* A couple of simplifcations to some libata functions, removing
unnecessary arguments (from Niklas).
* An improvements to libata-eh code to avoid unnecessary link reset when
revalidating a drive after a failed command. In practice, this extra,
unneeded reset, reset does not cause any arm beyond slightly slowing
down error recovery (from Niklas).
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Merge tag 'ata-6.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/libata
Pull ata updates from Damien Le Moal:
- Print the timeout value for internal command failures due to a
timeout (from Tomas)
- Improve parameter names in ata_dev_set_feature() to clarify this
function use (from Niklas)
- Improve the ahci driver low power mode setting initialization to
allow more flexibility for the user (from Rafael)
- Several patches to remove redundant variables in libata-core,
libata-eh and the pata_macio driver and to fix typos in comments
(from Jinpeng, Shaomin, Ye)
- Some code simplifications and macro renaming (for clarity) in various
functions of libata-core (from me)
- Add a missing check for a potential failure of sata_scr_read() in
sata_print_link_status() (from Li)
- Cleanup of libata Kconfig PATA_PLATFORM and PATA_OF_PLATFORM options
(from Lukas)
- Cleanups of ata dt-bindings and improvements of libahci_platform,
ahci and libahci code (from Serge)
- New driver for Synopsys AHCI SATA controllers, based of the generic
ahci code (from Serge). One compilation warning fix is added for this
driver (from me)
- Several fixes to macros used to discover a drive capabilities to be
consistent with the ACS specifications (from Niklas)
- A couple of simplifcations to some libata functions, removing
unnecessary arguments (from Niklas)
- An improvements to libata-eh code to avoid unnecessary link reset
when revalidating a drive after a failed command. In practice, this
extra, unneeded reset, reset does not cause any arm beyond slightly
slowing down error recovery (from Niklas)
* tag 'ata-6.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/libata: (45 commits)
ata: libata-eh: avoid needless hard reset when revalidating link
ata: libata: drop superfluous ata_eh_analyze_tf() parameter
ata: libata: drop superfluous ata_eh_request_sense() parameter
ata: fix ata_id_has_dipm()
ata: fix ata_id_has_ncq_autosense()
ata: fix ata_id_has_devslp()
ata: fix ata_id_sense_reporting_enabled() and ata_id_has_sense_reporting()
ata: libata-eh: Remove the unneeded result variable
ata: ahci_st: Enable compile test
ata: ahci_st: Fix compilation warning
MAINTAINERS: Add maintainers for DWC AHCI SATA driver
ata: ahci-dwc: Add Baikal-T1 AHCI SATA interface support
ata: ahci-dwc: Add platform-specific quirks support
dt-bindings: ata: ahci: Add Baikal-T1 AHCI SATA controller DT schema
ata: ahci: Add DWC AHCI SATA controller support
ata: libahci_platform: Add function returning a clock-handle by id
dt-bindings: ata: ahci: Add DWC AHCI SATA controller DT schema
ata: ahci: Introduce firmware-specific caps initialization
ata: ahci: Convert __ahci_port_base to accepting hpriv as arguments
ata: libahci: Don't read AHCI version twice in the save-config method
...
- Rework the device tree initialization, convert the drivers to the
new API and remove the old OF code (Daniel Lezcano).
- Fix return value to -ENODEV when searching for a specific thermal
zone which does not exist (Daniel Lezcano).
- Fix the return value inspection in of_thermal_zone_find() (Dan
Carpenter).
- Fix kernel panic when KASAN is enabled as it detects use after
free when unregistering a thermal zone (Daniel Lezcano).
- Move the set_trip ops inside the therma sysfs code (Daniel Lezcano).
- Remove unnecessary error message as it is already shown in the
underlying function (Jiapeng Chong).
- Rework the monitoring path and move the locks upper in the call
stack to fix some potentials race windows (Daniel Lezcano).
- Fix lockdep_assert() warning introduced by the lock rework (Daniel
Lezcano).
- Do not lock thermal zone mutex in the user space governor (Rafael
Wysocki).
- Revert the Mellanox 'hotter thermal zone' feature because it is
already handled in the thermal framework core code (Daniel Lezcano).
- Increase maximum number of trip points in the thermal core (Sumeet
Pawnikar).
- Replace strlcpy() with unused retval with strscpy() in the core
thermal control code (Wolfram Sang).
- Use module_pci_driver() macro in the int340x processor_thermal
driver (Shang XiaoJing).
- Use get_cpu() instead of smp_processor_id() in the intel_powerclamp
thermal driver to prevent it from crashing and remove unused
accounting for IRQ wakes from it (Srinivas Pandruvada).
- Consolidate priv->data_vault checks in int340x_thermal (Rafael
Wysocki).
- Check the policy first in cpufreq_cooling_register() (Xuewen Yan).
- Drop redundant error message from da9062-thermal (zhaoxiao).
- Drop of_match_ptr() from thermal_mmio (Jean Delvare).
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Merge tag 'thermal-6.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull thermal control updates from Rafael Wysocki:
"The most significant part of this update is the thermal control DT
initialization rework from Daniel Lezcano and the following conversion
of drivers to use the new API introduced by it
Apart from that, the maximum number of trip points in a thermal zone
is increased and there are some fixes and code cleanups
Specifics:
- Rework the device tree initialization, convert the drivers to the
new API and remove the old OF code (Daniel Lezcano)
- Fix return value to -ENODEV when searching for a specific thermal
zone which does not exist (Daniel Lezcano)
- Fix the return value inspection in of_thermal_zone_find() (Dan
Carpenter)
- Fix kernel panic when KASAN is enabled as it detects use after free
when unregistering a thermal zone (Daniel Lezcano)
- Move the set_trip ops inside the therma sysfs code (Daniel Lezcano)
- Remove unnecessary error message as it is already shown in the
underlying function (Jiapeng Chong)
- Rework the monitoring path and move the locks upper in the call
stack to fix some potentials race windows (Daniel Lezcano)
- Fix lockdep_assert() warning introduced by the lock rework (Daniel
Lezcano)
- Do not lock thermal zone mutex in the user space governor (Rafael
Wysocki)
- Revert the Mellanox 'hotter thermal zone' feature because it is
already handled in the thermal framework core code (Daniel Lezcano)
- Increase maximum number of trip points in the thermal core (Sumeet
Pawnikar)
- Replace strlcpy() with unused retval with strscpy() in the core
thermal control code (Wolfram Sang)
- Use module_pci_driver() macro in the int340x processor_thermal
driver (Shang XiaoJing)
- Use get_cpu() instead of smp_processor_id() in the intel_powerclamp
thermal driver to prevent it from crashing and remove unused
accounting for IRQ wakes from it (Srinivas Pandruvada)
- Consolidate priv->data_vault checks in int340x_thermal (Rafael
Wysocki)
- Check the policy first in cpufreq_cooling_register() (Xuewen Yan)
- Drop redundant error message from da9062-thermal (zhaoxiao)
- Drop of_match_ptr() from thermal_mmio (Jean Delvare)"
* tag 'thermal-6.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (55 commits)
thermal: core: Increase maximum number of trip points
thermal: int340x: processor_thermal: Use module_pci_driver() macro
thermal: intel_powerclamp: Remove accounting for IRQ wakes
thermal: intel_powerclamp: Use get_cpu() instead of smp_processor_id() to avoid crash
thermal: int340x_thermal: Consolidate priv->data_vault checks
thermal: cpufreq_cooling: Check the policy first in cpufreq_cooling_register()
thermal: Drop duplicate words from comments
thermal: move from strlcpy() with unused retval to strscpy()
thermal: da9062-thermal: Drop redundant error message
thermal/drivers/thermal_mmio: Drop of_match_ptr()
thermal: gov_user_space: Do not lock thermal zone mutex
Revert "mlxsw: core: Add the hottest thermal zone detection"
thermal/core: Fix lockdep_assert() warning
thermal/core: Move the mutex inside the thermal_zone_device_update() function
thermal/core: Move the thermal zone lock out of the governors
thermal/governors: Group the thermal zone lock inside the throttle function
thermal/core: Rework the monitoring a bit
thermal/core: Rearm the monitoring only one time
thermal/drivers/qcom/spmi-adc-tm5: Remove unnecessary print function dev_err()
thermal/of: Remove old OF code
...
The function __ata_change_queue_depth() uses the helper
ata_scsi_find_dev() to get the ata_device structure of a scsi device and
set that device maximum queue depth. However, when the ata device is
managed by libsas, ata_scsi_find_dev() returns NULL, turning
__ata_change_queue_depth() into a nop, which prevents the user from
setting the maximum queue depth of ATA devices used with libsas based
HBAs.
Fix this by renaming __ata_change_queue_depth() to
ata_change_queue_depth() and adding a pointer to the ata_device
structure of the target device as argument. This pointer is provided by
ata_scsi_change_queue_depth() using ata_scsi_find_dev() in the case of
a libata managed device and by sas_change_queue_depth() using
sas_to_ata_dev() in the case of a libsas managed ata device.
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Tested-by: John Garry <john.garry@huawei.com>
For SATA devices supporting NCQ, drivers using libsas first initialize a
scsi device queue depth based on the controller and device capabilities,
leading to the scsi device queue_depth field being 32 (ATA maximum queue
depth) for most setup. However, if libata was loaded using the
force=[ID]]noncq argument, the default queue depth should be set to 1 to
reflect the fact that queuable commands will never be used. This is
consistent with manually setting a device queue depth to 1 through sysfs
as that disables NCQ use for the device.
Fix ata_scsi_dev_config() to honor the noncq parameter by sertting the
device queue depth to 1 for devices that do not have the ATA_DFLAG_NCQ
flag set.
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Tested-by: John Garry <john.garry@huawei.com>
Commit 1527f69204 ("ata: ahci: Add Green Sardine vendor ID as
board_ahci_mobile") added an explicit entry for AMD Green Sardine
AHCI controller using the board_ahci_mobile configuration (this
configuration has later been renamed to board_ahci_low_power).
The board_ahci_low_power configuration enables support for low power
modes.
This explicit entry takes precedence over the generic AHCI controller
entry, which does not enable support for low power modes.
Therefore, when commit 1527f69204 ("ata: ahci: Add Green Sardine
vendor ID as board_ahci_mobile") was backported to stable kernels,
it make some Pioneer optical drives, which was working perfectly fine
before the commit was backported, stop working.
The real problem is that the Pioneer optical drives do not handle low
power modes correctly. If these optical drives would have been tested
on another AHCI controller using the board_ahci_low_power configuration,
this issue would have been detected earlier.
Unfortunately, the board_ahci_low_power configuration is only used in
less than 15% of the total AHCI controller entries, so many devices
have never been tested with an AHCI controller with low power modes.
Fixes: 1527f69204 ("ata: ahci: Add Green Sardine vendor ID as board_ahci_mobile")
Cc: stable@vger.kernel.org
Reported-by: Jaap Berkhout <j.j.berkhout@staalenberk.nl>
Signed-off-by: Niklas Cassel <niklas.cassel@wdc.com>
Reviewed-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Performing a revalidation on a AHCI controller supporting LPM,
while using a lpm mode of e.g. med_power_with_dip (hipm + dipm) or
medium_power (hipm), will currently always lead to a hard reset.
The expected behavior is that a hard reset is only performed when
revalidate fails, because the properties of the drive has changed.
A revalidate performed after e.g. a NCQ error, or such a simple thing
as disabling write-caching (hdparm -W 0 /dev/sda), should succeed on
the first try (and should therefore not cause the link to be reset).
This unwarranted hard reset happens because ata_phys_link_offline()
returns true for a link that is in deep sleep. Thus the call to
ata_phys_link_offline() in ata_eh_revalidate_and_attach() will cause
the revalidation to fail, which causes ata_eh_handle_dev_fail() to be
called, which will set ehc->i.action |= ATA_EH_RESET, such that the
link is reset before retrying revalidation.
When the link is reset, the link is reestablished, so when
ata_eh_revalidate_and_attach() is called the second time, directly
after the link has been reset, ata_phys_link_offline() will return
false, and the revalidation will succeed.
Looking at "8.3.1.3 HBA Initiated" in the AHCI 1.3.1 specification,
it is clear the when host software writes a new command to memory,
by setting a bit in the PxCI/PxSACT HBA port registers, the HBA will
automatically bring back the link before sending out the Command FIS.
However, simply reading a SCR (like ata_phys_link_offline() does),
will not cause the HBA to automatically bring back the link.
As long as hipm is enabled, the HBA will put an idle link into deep
sleep. Avoid this needless hard reset on revalidation by temporarily
disabling hipm, by setting the LPM mode to ATA_LPM_MAX_POWER.
After revalidation is complete, ata_eh_recover() will restore the link
policy by setting the LPM mode to ap->target_lpm_policy.
Signed-off-by: Niklas Cassel <niklas.cassel@wdc.com>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
The parameter can easily be derived from struct ata_queued_cmd.
Signed-off-by: Niklas Cassel <niklas.cassel@wdc.com>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
The parameter can easily be derived from struct ata_queued_cmd.
Signed-off-by: Niklas Cassel <niklas.cassel@wdc.com>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Return the value ata_port_abort() directly instead of storing it in
another redundant variable.
Reported-by: Zeal Robot <zealci@zte.com.cn>
Signed-off-by: ye xingchen <ye.xingchen@zte.com.cn>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Remove the unused variable dev in st_ahci_probe() to avoid compilation
warning and build failures where CONFIG_WERROR is enabled.
Fixes: 3f74cd046f ("ata: libahci_platform: Parse ports-implemented property in resources getter")
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
It's almost fully compatible DWC AHCI SATA IP-core derivative except the
reference clocks source, which need to be very carefully selected. In
particular the DWC AHCI SATA PHY can be clocked either from the pads
ref_pad_clk_{m,p} or from the internal wires ref_alt_clk_{m,n}. In the
later case the clock signal is generated from the Baikal-T1 CCU SATA PLL.
The clocks source is selected by means of the ref_use_pad wire connected
to the CCU SATA reference clock CSR.
In normal situation it would be much more handy to use the internal
reference clock source, but alas we haven't managed to make the AHCI
controller working well with it so far. So it's preferable to have the
controller clocked from the external clock generator and fallback to the
internal clock source only as a last resort. Other than that the
controller is full compatible with the DWC AHCI SATA IP-core.
Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Some DWC AHCI SATA IP-core derivatives require to perform small platform
or IP-core specific setups. They are too small to be placed in a dedicated
driver. It's just much easier to have a set of quirks for them right in
the DWC AHCI driver code. Since we are about to add such platform support,
as a pre-requisite we introduce a platform-data based DWC AHCI quirks API.
The platform data can be used to define the flags passed to the
ahci_platform_get_resources() method, additional AHCI host-flags and a set
of callbacks to initialize, re-initialize and clear the platform settings.
Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Synopsys AHCI SATA controller can work pretty under with the generic
AHCI-platform driver control. But there are vendor-specific peculiarities
which can tune the device performance up and which may need to be fixed up
for proper device functioning. In addition some DWC AHCI-based controllers
may require small platform-specific fixups, so adding them in the generic
AHCI driver would have ruined the code simplicity. Shortly speaking in
order to keep the generic AHCI-platform code clean and have DWC AHCI
SATA-specific features supported we suggest to add a dedicated DWC AHCI
SATA device driver. Aside with the standard AHCI-platform resources
getting, enabling/disabling and the controller registration the new driver
performs the next actions.
First of all there is a way to verify whether the HBA/ports capabilities
activated in OF are correct. Almost all features availability is reflected
in the vendor-specific parameters registers. So the DWC AHCI driver does
the capabilities sanity check based on the corresponding fields state.
Secondly if either the Command Completion Coalescing or the Device Sleep
feature is enabled the DWC AHCI-specific internal 1ms timer must be fixed
in accordance with the application clock signal frequency. In particular
the timer value must be set to be Fapp * 1000. Normally the SoC designers
pre-configure the TIMER1MS register to contain a correct value by default.
But the platforms can support the application clock rate change. If that
happens the 1ms timer value must be accordingly updated otherwise the
dependent features won't work as expected. In the DWC AHCI driver we
suggest to rely on the "aclk" reference clock rate to set the timer
interval up. That clock source is supposed to be the AHCI SATA application
clock in accordance with the DT bindings.
Finally DWC AHCI SATA controller AXI/AHB bus DMA-engine can be tuned up to
transfer up to 1024 * FIFO words at a time by setting the Tx/Rx
transaction size in the DMA control register. The maximum value depends on
the DMA data bus and AXI/AHB bus maximum burst length. In most of the
cases it's better to set the maximum possible value to reach the best AHCI
SATA controller performance. But sometimes in order to improve the system
interconnect responsiveness, transferring in smaller data chunks may be
more preferable. For such cases and for the case when the default value
doesn't provide the best DMA bus performance we suggest to use the new
HBA-port specific DT-properties "snps,{tx,rx}-ts-max" to tune the DMA
transactions size up.
After all the settings denoted above are handled the DWC AHCI SATA driver
proceeds further with the standard AHCI-platform host initializations.
Note since DWC AHCI controller is now have a dedicated driver we can
discard the corresponding compatible string from the ahci-platform.c
module. The same concerns "snps,spear-ahci" compatible string, which is
also based on the DWC AHCI IP-core.
Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Since all the clocks are retrieved by the method
ahci_platform_get_resources() there is no need for the LLD (glue) drivers
to be looking for some particular of them in the kernel clocks table
again. Instead we suggest to add a simple method returning a
device-specific clock with passed connection ID if it is managed to be
found. Otherwise the function will return NULL. Thus the glue-drivers
won't need to either manually touching the hpriv->clks array or calling
clk_get()-friends. The AHCI platform drivers will be able to use the new
function right after the ahci_platform_get_resources() method invocation
and up to the device removal.
Note the method is left unused here, but will be utilized in the framework
of the DWC AHCI SATA driver being added in the next commit.
Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
There are systems with no BIOS or comprehensive embedded firmware which
could be able to properly initialize the SATA AHCI controller
platform-specific capabilities. In that case a good alternative to having
a clever bootloader is to create a device tree node with the properties
well describing all the AHCI-related platform specifics. All the settings
which are normally detected and marked as available in the HBA and its
ports capabilities fields [1] could be defined in the platform DTB by
means of a set of the dedicated properties. Such approach perfectly fits
to the DTB-philosophy - to provide hardware/platform description.
So here we suggest to extend the SATA AHCI device tree bindings with two
additional DT-properties:
1) "hba-cap" - HBA platform generic capabilities like:
- SSS - Staggered Spin-up support.
- SMPS - Mechanical Presence Switch support.
2) "hba-port-cap" - HBA platform port capabilities like:
- HPCP - Hot Plug Capable Port.
- MPSP - Mechanical Presence Switch Attached to Port.
- CPD - Cold Presence Detection.
- ESP - External SATA Port.
- FBSCP - FIS-based Switching Capable Port.
All of these capabilities require to have a corresponding hardware
configuration. Thus it's ok to have them defined in DTB.
Even though the driver currently takes into account the state of the ESP
and FBSCP flags state only, there is nothing wrong with having all of them
supported by the generic AHCI library in order to have a complete OF-based
platform-capabilities initialization procedure. These properties will be
parsed in the ahci_platform_get_resources() method and their values will
be stored in the saved_* fields of the ahci_host_priv structure, which in
its turn then will be used to restore the H.CAP, H.PI and P#.CMD
capability fields on device init and after HBA reset.
Please note this modification concerns the HW-init HBA and its ports flags
only, which are by specification [1] are supposed to be initialized by the
BIOS/platform firmware/expansion ROM and which are normally declared in
the one-time-writable-after-reset register fields. Even though these flags
aren't supposed to be cleared after HBA reset some AHCI instances may
violate that rule so we still need to perform the fields resetting after
each reset. Luckily the corresponding functionality has already been
partly implemented in the framework of the ahci_save_initial_config() and
ahci_restore_initial_config() methods.
[1] Serial ATA AHCI 1.3.1 Specification, p. 103
Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
The port base address may be required even before the ata_host instance is
initialized and activated, for instance in the ahci_save_initial_config()
method which we are about to update (consider this modification as a
preparation for that one). Seeing the __ahci_port_base() function isn't
used much it's the best candidate to provide the required functionality.
So let's convert it to accepting the ahci_host_priv structure pointer.
Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
There is no point in reading the AHCI version all over in the tail of the
ahci_save_initial_config() method. That register is RO and doesn't change
its value even after reset. So just reuse the data, which has already been
read from there earlier in the head of the function.
Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Currently there are four port-map-related fields declared in the
ahci_host_priv structure and used to setup the HBA ports mapping. First
the ports-mapping is read from the PI register and immediately stored in
the saved_port_map field. If forced_port_map is initialized with non-zero
value then its value will have greater priority over the value read from
PI, thus it will override the saved_port_map field. That value will be
then masked by a non-zero mask_port_map field and after some sanity checks
it will be stored in the ahci_host_priv.port_map field as a final port
mapping.
As you can see the logic is a bit too complicated for such a simple task.
We can freely get rid from at least one of the fields with no change to
the implemented semantic. The force_port_map field can be replaced with
taking non-zero saved_port_map value into account. So if saved_port_map is
pre-initialized by the low level drivers (platform drivers) then it will
have greater priority over the value read from PI register and will be
used as actual HBA ports mapping later on. Thus the ports map forcing task
will be just transferred from force_port_map to the saved_port_map field.
This modification will perfectly fit into the feature of having OF-based
initialization of the HW-init HBA CSR fields we are about to introduce in
the next commit.
Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Ondrej Zary