SATA drives may support write same via SCT. This is useful
for setting the drive contents to a specific pattern (0's).
Translate a SCSI WRITE SAME 16 command to be either a DSM TRIM
command or an SCT Write Same command.
Based on the UNMAP flag:
- When set translate to DSM TRIM
- When not set translate to SCT Write Same
Signed-off-by: Shaun Tancheff <shaun.tancheff@seagate.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Acked-by: Tejun Heo <tj@kernel.org>
Safely overwriting the attached page to ATA format from the SCSI formatted
variant.
Signed-off-by: Shaun Tancheff <shaun.tancheff@seagate.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Acked-by: Tejun Heo <tj@kernel.org>
irq already contains the interrupt number for the port, don't add the
port index to it.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Tejun Heo <tj@kernel.org>
Fixes: d684a90d38 ("ahci: per-port msix support")
Cc: stable@vger.kernel.org v4.5+
Despite ST AHCI version = 1.3, reading HOST_PORTS_IMPL
returns 0. So force_port_map to 1 by using ports-implemented
DT property.
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
By default the SATA IP on the qoriq SoCs does not generating
coherent/snoopable transactions. This patch enable it in the
sata axicc register.
In addition, the dma-coherent property must be set on the
SATA controller nodes.
Signed-off-by: Tang Yuantian <yuantian.tang@nxp.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
The default values for Port Phy2Cfg register and
Port Phy3Cfg register are better, no need to overwrite them.
Signed-off-by: Tang Yuantian <yuantian.tang@nxp.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
scsi_done() was called repeatedly and apparently because of that,
the kernel would call trace when we touch the Control mode page:
Call Trace:
[<ffffffff812ea0d2>] dump_stack+0x63/0x81
[<ffffffff81079cfb>] __warn+0xcb/0xf0
[<ffffffff81079e2d>] warn_slowpath_null+0x1d/0x20
[<ffffffffa00f51b0>] ata_eh_finish+0xe0/0xf0 [libata]
[<ffffffffa00fb830>] sata_pmp_error_handler+0x640/0xa50 [libata]
[<ffffffffa00470ed>] ahci_error_handler+0x1d/0x70 [libahci]
[<ffffffffa00f55f0>] ata_scsi_port_error_handler+0x430/0x770 [libata]
[<ffffffffa00eff8d>] ? ata_scsi_cmd_error_handler+0xdd/0x160 [libata]
[<ffffffffa00f59d7>] ata_scsi_error+0xa7/0xf0 [libata]
[<ffffffffa00913ba>] scsi_error_handler+0xaa/0x560 [scsi_mod]
[<ffffffffa0091310>] ? scsi_eh_get_sense+0x180/0x180 [scsi_mod]
[<ffffffff81098eb8>] kthread+0xd8/0xf0
[<ffffffff815d913f>] ret_from_fork+0x1f/0x40
[<ffffffff81098de0>] ? kthread_worker_fn+0x170/0x170
---[ end trace 8b7501047e928a17 ]---
Removed the unnecessary code and let ata_scsi_translate() do the job.
Also, since ata_mselect_control() has no ATA command to send to the
device, ata_scsi_mode_select_xlat() should return 1 for it, so that
ata_scsi_translate() will finish early to avoid ata_qc_issue().
Signed-off-by: Tom Yan <tom.ty89@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
ata_mselect_*() would initialize a char array for storing a copy of
the current mode page. However, char could be signed char. In that
case, bytes larger than 127 would be converted to negative number.
For example, 0xff from def_control_mpage[] would become -1. This
prevented ata_mselect_control() from working at all, since when it
did the read-only bits check, there would always be a mismatch.
Signed-off-by: Tom Yan <tom.ty89@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
- LED driver for TI LP3952 6-Channel Color LED
LED core improvements:
- Only descend into leds directory when CONFIG_NEW_LEDS is set
- Add no-op gpio_led_register_device when LED subsystem is disabled
- MAINTAINERS: Add file patterns for led device tree bindings
LED Trigger core improvements:
- return error if invalid trigger name is provided via sysfs
LED class drivers improvements
- is31fl32xx: define complete i2c_device_id table
- is31fl32xx: fix typo in id and match table names
- leds-gpio: Set of_node for created LED devices
- pca9532: Add device tree support
Conversion of IDE trigger to common disk trigger:
- leds: convert IDE trigger to common disk trigger
- leds: documentation: 'ide-disk' to 'disk-activity'
- unicore32: use the new LED disk activity trigger
- parisc: use the new LED disk activity trigger
- mips: use the new LED disk activity trigger
- arm: use the new LED disk activity trigger
- powerpc: use the new LED disk activity trigger
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Merge tag 'leds_for_4.8' of git://git.kernel.org/pub/scm/linux/kernel/git/j.anaszewski/linux-leds
Pull LED updates from Jacek Anaszewski:
"New LED class driver:
- LED driver for TI LP3952 6-Channel Color LED
LED core improvements:
- Only descend into leds directory when CONFIG_NEW_LEDS is set
- Add no-op gpio_led_register_device when LED subsystem is disabled
- MAINTAINERS: Add file patterns for led device tree bindings
LED Trigger core improvements:
- return error if invalid trigger name is provided via sysfs
LED class drivers improvements
- is31fl32xx: define complete i2c_device_id table
- is31fl32xx: fix typo in id and match table names
- leds-gpio: Set of_node for created LED devices
- pca9532: Add device tree support
Conversion of IDE trigger to common disk trigger:
- leds: convert IDE trigger to common disk trigger
- leds: documentation: 'ide-disk' to 'disk-activity'
- unicore32: use the new LED disk activity trigger
- parisc: use the new LED disk activity trigger
- mips: use the new LED disk activity trigger
- arm: use the new LED disk activity trigger
- powerpc: use the new LED disk activity trigger"
* tag 'leds_for_4.8' of git://git.kernel.org/pub/scm/linux/kernel/git/j.anaszewski/linux-leds:
leds: is31fl32xx: define complete i2c_device_id table
leds: is31fl32xx: fix typo in id and match table names
leds: LED driver for TI LP3952 6-Channel Color LED
leds: leds-gpio: Set of_node for created LED devices
leds: triggers: return error if invalid trigger name is provided via sysfs
leds: Only descend into leds directory when CONFIG_NEW_LEDS is set
leds: Add no-op gpio_led_register_device when LED subsystem is disabled
unicore32: use the new LED disk activity trigger
parisc: use the new LED disk activity trigger
mips: use the new LED disk activity trigger
arm: use the new LED disk activity trigger
powerpc: use the new LED disk activity trigger
leds: documentation: 'ide-disk' to 'disk-activity'
leds: convert IDE trigger to common disk trigger
leds: pca9532: Add device tree support
MAINTAINERS: Add file patterns for led device tree bindings
Pull core block updates from Jens Axboe:
- the big change is the cleanup from Mike Christie, cleaning up our
uses of command types and modified flags. This is what will throw
some merge conflicts
- regression fix for the above for btrfs, from Vincent
- following up to the above, better packing of struct request from
Christoph
- a 2038 fix for blktrace from Arnd
- a few trivial/spelling fixes from Bart Van Assche
- a front merge check fix from Damien, which could cause issues on
SMR drives
- Atari partition fix from Gabriel
- convert cfq to highres timers, since jiffies isn't granular enough
for some devices these days. From Jan and Jeff
- CFQ priority boost fix idle classes, from me
- cleanup series from Ming, improving our bio/bvec iteration
- a direct issue fix for blk-mq from Omar
- fix for plug merging not involving the IO scheduler, like we do for
other types of merges. From Tahsin
- expose DAX type internally and through sysfs. From Toshi and Yigal
* 'for-4.8/core' of git://git.kernel.dk/linux-block: (76 commits)
block: Fix front merge check
block: do not merge requests without consulting with io scheduler
block: Fix spelling in a source code comment
block: expose QUEUE_FLAG_DAX in sysfs
block: add QUEUE_FLAG_DAX for devices to advertise their DAX support
Btrfs: fix comparison in __btrfs_map_block()
block: atari: Return early for unsupported sector size
Doc: block: Fix a typo in queue-sysfs.txt
cfq-iosched: Charge at least 1 jiffie instead of 1 ns
cfq-iosched: Fix regression in bonnie++ rewrite performance
cfq-iosched: Convert slice_resid from u64 to s64
block: Convert fifo_time from ulong to u64
blktrace: avoid using timespec
block/blk-cgroup.c: Declare local symbols static
block/bio-integrity.c: Add #include "blk.h"
block/partition-generic.c: Remove a set-but-not-used variable
block: bio: kill BIO_MAX_SIZE
cfq-iosched: temporarily boost queue priority for idle classes
block: drbd: avoid to use BIO_MAX_SIZE
block: bio: remove BIO_MAX_SECTORS
...
Pull libata updates from Tejun Heo:
"libata saw quite a bit of activities in this cycle:
- SMR drive support still being worked on
- bug fixes and improvements to misc SCSI command emulation
- some low level driver updates"
* 'for-4.8' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata: (39 commits)
libata-scsi: better style in ata_msense_*()
AHCI: Clear GHC.IS to prevent unexpectly asserting INTx
ata: sata_dwc_460ex: remove redundant dev_err call
ata: define ATA_PROT_* in terms of ATA_PROT_FLAG_*
libata: remove ATA_PROT_FLAG_DATA
libata: remove ata_is_nodata
ata: make lba_{28,48}_ok() use ATA_MAX_SECTORS{,_LBA48}
libata-scsi: minor cleanup for ata_scsi_zbc_out_xlat
libata-scsi: Fix ZBC management out command translation
libata-scsi: Fix translation of REPORT ZONES command
ata: Handle ATA NCQ NO-DATA commands correctly
libata-eh: decode all taskfile protocols
ata: fixup ATA_PROT_NODATA
libsas: use ata_is_ncq() and ata_has_dma() accessors
libata: use ata_is_ncq() accessors
libata: return boolean values from ata_is_*
libata-scsi: avoid repeated calculation of number of TRIM ranges
libata-scsi: reject WRITE SAME (16) with n_block that exceeds limit
libata-scsi: rename ata_msense_ctl_mode() to ata_msense_control()
libata-scsi: fix D_SENSE bit relection in control mode page
...
Pull libata fix from Tejun Heo:
"Another fallout from max_sectors bump a couple years ago. The lite-on
optical drive times out on large requests"
* 'for-4.7-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata:
libata: LITE-ON CX1-JB256-HP needs lower max_sectors
`changeable` is the "version" of mode page requested by the user.
It will be less confusing/misleading if we do not check it
"together" with the setting bits of the drive.
Not to mention that we currently have ata_mselect_*() implemented
in a way that each of them will serve exclusively a particular bit
on each page. The old style will hence make the condition look even
more unnecessarily arcane if the ata_msense_*() is reflecting more
than one bit.
Signed-off-by: Tom Yan <tom.ty89@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Due to PCI subsystem behaviour, unloading AHCI driver will disable
MSI and enable INTx. When HBA supports MSIx or Multiple MSI, Driver's
irq handler doesn't clear GHC.IS register. It works well when reading or
writing data and GHC.IS is always non-zero. But when unloading driver
(or any other operation which causes disable MSIx and enable INTx), PCI
subsystem uses config write(Rx04.bit10) to enable INTx. Because
GHC.IS is non-zero, HBA will falsely assume some port needs interrupt
service. Then it asserts INTx. To make things worse, when AHCI controller
shares the same interrupt pin with other PCI device, that PCI device's ISR
will be called and nobody de-asserts previous INTx.
This patch clears GHC.IS in ahci_port_stop() even when using MSIx or
MMSI to prevent this case. It ensures GHC.IS is zero before PCI subsystem
enables INTx.
tj: Minor updates to the comment.
Signed-off-by: Raymond Pang <raymond_rule@hotmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
There is a error message within devm_ioremap_resource
already, so remove the dev_err call to avoid redundant
error message.
Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Tejun Heo <tj@kernel.org>
This avoid the need to always translate between the two in ata_prot_flags
and generally cleans up the taskfile protocol usage.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Tejun Heo <tj@kernel.org>
The reset_all variable name is misleading as this bit is also applicable to
open, close, and finish actions. So rename that variable to "all" and remove
the unnecessary mask operation that's already done earlier.
Signed-off-by: Damien Le Moal <damien.lemoal@hgst.com>
[hch: split from the previous patch]
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Tejun Heo <tj@kernel.org>
The subcommand for NCQ NON-DATA must be specified in the feature
(low byte), not the high-order count byte. Also make sure to properly
cast the all bit to a u16 before shiting it by 8 to avoid undefined
behavior.
Signed-off-by: Damien Le Moal <damien.lemoal@hgst.com>
[hch: split the original patch into two, updated changelog]
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Tejun Heo <tj@kernel.org>
Include reporting options when translating REPORT ZONES commmand to
ATA NCQ, and make sure we only look at the actually specified bits
in the CDB for the options.
Signed-off-by: Damien Le Moal <damien.lemoal@hgst.com>
[hch: update patch description]
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Tejun Heo <tj@kernel.org>
Add a new taskfile protocol ATA_PROT_NCQ_NODATA to handle
ATA NCQ NO-DATA commands correctly.
And fixup ata_scsi_zbc_out_xlat() to use it.
Signed-off-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Tejun Heo <tj@kernel.org>
Some taskfile protocol values where missing in ata_eh_link_report().
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Tejun Heo <tj@kernel.org>
The taskfile protocol is a numeric value, and can not be ORed. Currently
this is harmless as the protocol is always zeroed before, but if it ever
has a non-zero value the ORing would create incorrect results.
Signed-off-by: Hannes Reinecke <hare@suse.de>
[hch: updated patch description]
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Tejun Heo <tj@kernel.org>
Use accessor functions instead of the raw value.
Signed-off-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Tejun Heo <tj@kernel.org>
Currently libata statically allows only 1-block (512-byte) payload
for each TRIM command. Each payload can carry 64 TRIM ranges since
each range requires 8 bytes.
It is silly to keep doing the calculation (512 / 8) in different
places. Hence, define the new ATA_MAX_TRIM_RNUM for the result.
Signed-off-by: Tom Yan <tom.ty89@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Currently if a WRITE SAME (16) command is issued to the SATL with
"number of blocks" that is larger than the "Maximum write same length"
(which is the maximum number of blocks per TRIM command allowed in
libata, currently 65535 * 512 / 8 blocks), the SATL will accept the
command and translate it to a TRIM command with the upper limit.
However, according to SBC (as of sbc4r11.pdf), the "device server"
should terminate the command with "Invalid field in CDB" in that case.
Signed-off-by: Tom Yan <tom.ty89@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
To make it consistent with the recently added ata_mselect_control().
We probably shouldn't have the word "mode" in its name anyway, since
that's not the case for other ata_msense_*() / ata_mselect_*() either.
Signed-off-by: Tom Yan <tom.ty89@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
The bit should always be set to 1 when the requested version of
page is "changeable" because we've made it so in ata_mselect_control().
Also, it should always be set to 1 if ATA_DFLAG_D_SENSE is set (when
the requested version of page is "current" or "default").
Signed-off-by: Tom Yan <tom.ty89@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
According to the HPT366 data sheet, PCI config space dword 0x40-0x43
bits 11:8 specify the primary drive cmd_high_time, however,
currently just 3 bits of the 4 are being used because the mask
is 0x700 and not 0x0f00. Fix the mask, allowing for the 40MHz clock
to be detected.
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
The comment suggests we should be having an SPC-3 version descriptor
but the 0260h is the code for "SPC-2 (no version claimed)". Correct
it to 0300h so that it has the "SPC-3 (no version claimed)" descriptor.
Note that we are claiming SPC-3 version compatibility in the VERSION
field of the standard INQUIRY data. Therefore, I assume the typo was
on the code but not on the comment.
Signed-off-by: Tom Yan <tom.ty89@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Avoid performance bottleneck when being SCSI pass-through'd to
virtual machines with other OSes (e.g. Windows) via virtio-scsi
and scsi-block in qemu.
Ref.: https://github.com/YanVugenfirer/kvm-guest-drivers-windows/issues/63
Signed-off-by: Tom Yan <tom.ty89@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Without this fix, the DRA bit of the caching mode page would not
be updated when the read look-ahead feature is toggled (e.g. with
`smartctl --set`), but will only be until, for example, the write
cache feature is touched.
Signed-off-by: Tom Yan <tom.ty89@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Commit 856c466393 ("libata: support device-managed ZAC devices")
had the line that "bumps" the VERSION field in standard INQUIRY data
removed. Add it back and claim SPC-5 version compatibility, which
matches with the current version descriptor "SPC-5 (no version claimed)"
that is used for ZAC devices.
Signed-off-by: Tom Yan <tom.ty89@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
It does not make sense and is confusing to respond with "Invalid
field in CDB" while we have no support at all implemented for
FORMAT UNIT. It is decent to let it go to the default, which
will respond with "Invalid command operation code" instead.
Signed-off-by: Tom Yan <tom.ty89@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Pull libata fixes from Tejun Heo:
"Two trivial fixes - one for a bug in the allocation failure path and
the other a compiler warning fix"
* 'for-4.7-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata:
ata: sata_mv: fix mis-conversion in mv_write_cached_reg()
ata: fix return value check in ahci_seattle_get_port_info()
Note that `&acdev->host->lock' and `qc->ap->lock' denote the same lock, and it's
particularly confusing to spin_lock on the former but spin_unlock on the latter.
Signed-off-by: Iago Abal <mail@iagoabal.eu>
Signed-off-by: Tejun Heo <tj@kernel.org>
This patch converts the IDE specific LED trigger to a generic disk
activity LED trigger. The libata core is now a trigger source just
like before the IDE disk driver. It's merely a replacement of the
string ide by disk.
The patch is taken from http://dev.gentoo.org/~josejx/ata.patch and is
widely used by any ibook/powerbook owners with great satisfaction.
Likewise, it is very often used successfully on different ARM platforms.
Unlike the original patch, the existing 'ide-disk' trigger is still
available for backward compatibility. That reduce the amount of patches
in affected device trees out of the mainline kernel. For further
development, the new name 'disk-activity' should be used.
Cc: Joseph Jezak <josejx@gentoo.org>
Cc: Jörg Sommer <joerg@alea.gnuu.de>
Cc: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Stephan Linz <linz@li-pro.net>
Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com>
Fix the signed issue in mv_write_cached_reg() where the laddr
is assigned from a (long)addr instead of (unsigned long)addr.
Fixes the following warnings:
drivers/ata/sata_mv.c:989:26: warning: cast removes address space of expression
drivers/ata/sata_mv.c:989:26: warning: cast removes address space of expression
drivers/ata/sata_mv.c:989:26: warning: cast removes address space of expression
drivers/ata/sata_mv.c:989:26: warning: cast removes address space of expression
Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk>
Signed-off-by: Tejun Heo <tj@kernel.org>
The sysfs file for the libata error handling has multiple issues
in the way it prints time stamps:
* it prints a 9-digit nanosecond value using a %06lu format string,
which drops some leading zeroes
* it converts a 64-bit jiffes value to a timespec using
jiffies_to_timespec(), which takes a 'long' argument, so the
result is wrong after a jiffies overflow (49 days).
* we try to avoid using timespec because that generally overflows
in 2038, although this particular usage is ok.
This replaces the jiffies_to_timespec call with an open-coded
implementation that gets it right.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Tejun Heo <tj@kernel.org>
In case of error, the function devm_kzalloc() returns NULL pointer
not ERR_PTR(). The IS_ERR() test in the return value check should
be replaced with NULL test.
Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Acked-by: Brijesh Singh <brijesh.singh@amd.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
sas_ata_strategy_handler() adds the works of the ata error handler to
system_unbound_wq. This workqueue asynchronously runs work items, so the
ata error handler will be performed concurrently on different CPUs. In
this case, ->host_failed will be decreased simultaneously in
scsi_eh_finish_cmd() on different CPUs, and become abnormal.
It will lead to permanently inequality between ->host_failed and
->host_busy, and scsi error handler thread won't start running. IO
errors after that won't be handled.
Since all scmds must have been handled in the strategy handler, just
remove the decrement in scsi_eh_finish_cmd() and zero ->host_busy after
the strategy handler to fix this race.
Fixes: 50824d6c56 ("[SCSI] libsas: async ata-eh")
Cc: stable@vger.kernel.org
Signed-off-by: Wei Fang <fangwei1@huawei.com>
Reviewed-by: James Bottomley <jejb@linux.vnet.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
We currently set REQ_WRITE/WRITE for all non READ IOs
like discard, flush, writesame, etc. In the next patches where we
no longer set up the op as a bitmap, we will not be able to
detect a operation direction like writesame by testing if REQ_WRITE is
set.
This patch converts the drivers and cgroup to use the
op_is_write helper. This should just cover the simple
cases. I did dm, md and bcache in their own patches
because they were more involved.
Signed-off-by: Mike Christie <mchristi@redhat.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
Most users of IS_ERR_VALUE() in the kernel are wrong, as they
pass an 'int' into a function that takes an 'unsigned long'
argument. This happens to work because the type is sign-extended
on 64-bit architectures before it gets converted into an
unsigned type.
However, anything that passes an 'unsigned short' or 'unsigned int'
argument into IS_ERR_VALUE() is guaranteed to be broken, as are
8-bit integers and types that are wider than 'unsigned long'.
Andrzej Hajda has already fixed a lot of the worst abusers that
were causing actual bugs, but it would be nice to prevent any
users that are not passing 'unsigned long' arguments.
This patch changes all users of IS_ERR_VALUE() that I could find
on 32-bit ARM randconfig builds and x86 allmodconfig. For the
moment, this doesn't change the definition of IS_ERR_VALUE()
because there are probably still architecture specific users
elsewhere.
Almost all the warnings I got are for files that are better off
using 'if (err)' or 'if (err < 0)'.
The only legitimate user I could find that we get a warning for
is the (32-bit only) freescale fman driver, so I did not remove
the IS_ERR_VALUE() there but changed the type to 'unsigned long'.
For 9pfs, I just worked around one user whose calling conventions
are so obscure that I did not dare change the behavior.
I was using this definition for testing:
#define IS_ERR_VALUE(x) ((unsigned long*)NULL == (typeof (x)*)NULL && \
unlikely((unsigned long long)(x) >= (unsigned long long)(typeof(x))-MAX_ERRNO))
which ends up making all 16-bit or wider types work correctly with
the most plausible interpretation of what IS_ERR_VALUE() was supposed
to return according to its users, but also causes a compile-time
warning for any users that do not pass an 'unsigned long' argument.
I suggested this approach earlier this year, but back then we ended
up deciding to just fix the users that are obviously broken. After
the initial warning that caused me to get involved in the discussion
(fs/gfs2/dir.c) showed up again in the mainline kernel, Linus
asked me to send the whole thing again.
[ Updated the 9p parts as per Al Viro - Linus ]
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Andrzej Hajda <a.hajda@samsung.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Link: https://lkml.org/lkml/2016/1/7/363
Link: https://lkml.org/lkml/2016/5/27/486
Acked-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> # For nvmem part
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
The IS_ENABLED() macro checks if a Kconfig symbol has been enabled either
built-in or as a module, use that macro instead of open coding the same.
Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Remove extraneous space on if statement and on the following line,
trivial fix, no functional change
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Pull libata sata_dwc_460ex updates from Tejun Heo:
"Patches to bring sata_dwc_460ex up to snuff.
It was a separate pull request because it depends on dmaengine dw
platform changes which are now in mainline"
* 'for-4.7-dw' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata: (24 commits)
ata: dwc: add DMADEVICES dependency
powerpc/4xx: Device tree update for the 460ex DWC SATA
ata: sata_dwc_460ex: make debug messages neat
ata: sata_dwc_460ex: supply physical address of FIFO to DMA
ata: sata_dwc_460ex: use devm_ioremap
ata: sata_dwc_460ex: tidy up sata_dwc_clear_dmacr()
ata: sata_dwc_460ex: use readl/writel_relaxed()
ata: sata_dwc_460ex: switch to new dmaengine_terminate_* API
ata: sata_dwc_460ex: add __iomem to register base pointer
ata: sata_dwc_460ex: get rid of incorrect cast
ata: sata_dwc_460ex: get rid of some pointless casts
ata: sata_dwc_460ex: remove empty libata callback
ata: sata_dwc_460ex: correct HOSTDEV{P}_FROM_*() macros
ata: sata_dwc_460ex: get rid of global data
ata: sata_dwc_460ex: add phy support
ata: sata_dwc_460ex: use "dmas" DT property to find dma channel
ata: sata_dwc_460ex: don't call ata_sff_qc_issue() on DMA commands
ata: sata_dwc_460ex: skip dma setup for non-dma commands
ata: sata_dwc_460ex: select only core part of DMA driver
ata: sata_dwc_460ex: DMA is always a flow controller
...
Pull libata ZAC support from Tejun Heo:
"This contains Zone ATA Command support for Shingled Magnetic Recording
devices.
In addition to sending the new commands down to the device, as ZAC
commands depend on getting a lot of responses from the device, piping
up responses is beefed up too. However, it doesn't involve changes to
libata core mechanism or its interaction with upper layers, so I'm not
expecting too many fallouts.
Kudos to Hannes for driving SMR support"
* 'for-4.7-zac' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata: (28 commits)
libata: support host-aware and host-managed ZAC devices
libata: support device-managed ZAC devices
libata: NCQ encapsulation for ZAC MANAGEMENT OUT
libata: Implement ZBC OUT translation
libata: implement ZBC IN translation
libata: fixup ZAC device disabling
libata-scsi: Generate sense code for disabled devices
libata-trace: decode subcommands
libata: Check log page directory before accessing pages
libata: Add command definitions for NCQ Encapsulation for READ LOG DMA EXT
libata: Separate out ata_dev_config_ncq_send_recv()
libata/libsas: Define ATA_CMD_NCQ_NON_DATA
libsas: enable FPDMA SEND/RECEIVE
libata: do not attempt to retrieve sense code twice
libata-scsi: Set information sense field for invalid parameter
libata-scsi: set bit pointer for sense code information
libata-scsi: Set field pointer in sense code
scsi: add scsi_set_sense_field_pointer()
libata: Implement control mode page to select sense format
libata-scsi: generate correct ATA pass-through sense
...
This time round the update brings in following changes:
- New tegra driver for ADMA device
- Support for Xilinx AXI Direct Memory Access Engine and Xilinx AXI Central
Direct Memory Access Engine and few updates to this driver.
- New cyclic capability to sun6i and few updates.
- Slave-sg support in bcm2835.
- Updates to many drivers like designware, hsu, mv_xor, pxa, edma,
qcom_hidma & bam.
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Merge tag 'dmaengine-4.7-rc1' of git://git.infradead.org/users/vkoul/slave-dma
Pull dmaengine updates from Vinod Koul:
"This time round the update brings in following changes:
- new tegra driver for ADMA device
- support for Xilinx AXI Direct Memory Access Engine and Xilinx AXI
Central Direct Memory Access Engine and few updates to this driver
- new cyclic capability to sun6i and few updates
- slave-sg support in bcm2835
- updates to many drivers like designware, hsu, mv_xor, pxa, edma,
qcom_hidma & bam"
* tag 'dmaengine-4.7-rc1' of git://git.infradead.org/users/vkoul/slave-dma: (84 commits)
dmaengine: ioatdma: disable relaxed ordering for ioatdma
dmaengine: of_dma: approximate an average distribution
dmaengine: core: Use IS_ENABLED() instead of checking for built-in or module
dmaengine: edma: Re-evaluate errors when ccerr is triggered w/o error event
dmaengine: qcom_hidma: add support for object hierarchy
dmaengine: qcom_hidma: add debugfs hooks
dmaengine: qcom_hidma: implement lower level hardware interface
dmaengine: vdma: Add clock support
Documentation: DT: vdma: Add clock support for dmas
dmaengine: vdma: Add config structure to differentiate dmas
MAINTAINERS: Update Tegra DMA maintainers
dmaengine: tegra-adma: Add support for Tegra210 ADMA
Documentation: DT: Add binding documentation for NVIDIA ADMA
dmaengine: vdma: Add Support for Xilinx AXI Central Direct Memory Access Engine
Documentation: DT: vdma: update binding doc for AXI CDMA
dmaengine: vdma: Add Support for Xilinx AXI Direct Memory Access Engine
Documentation: DT: vdma: update binding doc for AXI DMA
dmaengine: vdma: Rename xilinx_vdma_ prefix to xilinx_dma
dmaengine: slave means at least one of DMA_SLAVE, DMA_CYCLIC
dmaengine: mv_xor: Allow selecting mv_xor for mvebu only compatible SoC
...
This patch includes the usual quota of driver updates (bnx2fc, mp3sas,
hpsa, ncr5380, lpfc, hisi_sas, snic, aacraid, megaraid_sas) there's
also a multiqueue update for scsi_debug, assorted bug fixes and a few
other minor updates (refactor of scsi_sg_pools into generic code, alua
and VPD updates, and struct timeval conversions).
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.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:
"First round of SCSI updates for the 4.6+ merge window.
This batch includes the usual quota of driver updates (bnx2fc, mp3sas,
hpsa, ncr5380, lpfc, hisi_sas, snic, aacraid, megaraid_sas). There's
also a multiqueue update for scsi_debug, assorted bug fixes and a few
other minor updates (refactor of scsi_sg_pools into generic code, alua
and VPD updates, and struct timeval conversions)"
* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (138 commits)
mpt3sas: Used "synchronize_irq()"API to synchronize timed-out IO & TMs
mpt3sas: Set maximum transfer length per IO to 4MB for VDs
mpt3sas: Updating mpt3sas driver version to 13.100.00.00
mpt3sas: Fix initial Reference tag field for 4K PI drives.
mpt3sas: Handle active cable exception event
mpt3sas: Update MPI header to 2.00.42
Revert "lpfc: Delete unnecessary checks before the function call mempool_destroy"
eata_pio: missing break statement
hpsa: Fix type ZBC conditional checks
scsi_lib: Decode T10 vendor IDs
scsi_dh_alua: do not fail for unknown VPD identification
scsi_debug: use locally assigned naa
scsi_debug: uuid for lu name
scsi_debug: vpd and mode page work
scsi_debug: add multiple queue support
bfa: fix bfa_fcb_itnim_alloc() error handling
megaraid_sas: Downgrade two success messages to info
cxlflash: Fix to resolve dead-lock during EEH recovery
scsi_debug: rework resp_report_luns
scsi_debug: use pdt constants
...
The dwc_460ex SATA driver has become available on non-powerpc architectures
and may cause randconfig build errors when CONFIG_DMADEVICES is not set
and SATA_DWC_OLD_DMA is enabled:
warning: (SATA_DWC_OLD_DMA) selects DW_DMAC_CORE which has unmet direct dependencies (DMADEVICES)
ERROR: "dw_dma_probe" [drivers/ata/sata_dwc_460ex.ko] undefined!
ERROR: "dw_dma_remove" [drivers/ata/sata_dwc_460ex.ko] undefined!
This adds an explcit Kconfig dependency to CONFIG_SATA_DWC so we
cannot run into broken configurations. While it would also be
possible to build the driver with both CONFIG_DMADEVICES
and SATA_DWC_OLD_DMA disabled, that case is not useful because
there is no fallback to PIO mode when the DMA engine is not
usable.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Fixes: 50b433753d ("ata: sata_dwc_460ex: use "dmas" DT property to find dma channel")
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
There is a duplication in the debug messages when accessing SCR registers.
Remove duplication to make the messages neat.
Tested-by: Christian Lamparter <chunkeey@googlemail.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
DMA operates with physical addresses which is not exactly the same as ioremap()
returns.
Introduce variable to keep physical address of the SATA FIFO register and
supply it when prepare DMA channel.
Tested-by: Christian Lamparter <chunkeey@googlemail.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
This simplifies error handling and cleanup by using devm to manage
IO mappings.
Tested-by: Christian Lamparter <chunkeey@googlemail.com>
Signed-off-by: Mans Rullgard <mans@mansr.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
This consolidates the reads from each of the if/else branches
to one place making the code a lot nicer to look at.
Tested-by: Christian Lamparter <chunkeey@googlemail.com>
Signed-off-by: Mans Rullgard <mans@mansr.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Rename the register access macros and use standard _relaxed()
ops instead of __raw variants with explicit byte swapping.
The original driver used the ppc-specific in/out_le32(). When it
was adapted to other systems, these were added to the driver
under ifdefs. However, those names are not defined as macros on
ppc, so it ended up replacing them there as well with altered
semantics. This patch restores the original semantics on ppc and
makes the accesses no less strict on other systems.
Also fixes too many sparse warnings to count.
Tested-by: Christian Lamparter <chunkeey@googlemail.com>
Signed-off-by: Mans Rullgard <mans@mansr.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Convert dmaengine_terminate_all() calls to synchronous and asynchronous
versions where appropriate.
Tested-by: Christian Lamparter <chunkeey@googlemail.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
The pointer to the mmio register base is missing the __iomem
annotation. Fix this.
Tested-by: Christian Lamparter <chunkeey@googlemail.com>
Signed-off-by: Mans Rullgard <mans@mansr.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
The (void *__iomem) cast is wrong. Change the target type of the
"base" pointer to void __iomem instead and drop the cast.
Tested-by: Christian Lamparter <chunkeey@googlemail.com>
Signed-off-by: Mans Rullgard <mans@mansr.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Casting a pointer to unsigned long only to immediately cast it back
to a pointer makes no sense. Fix this.
Tested-by: Christian Lamparter <chunkeey@googlemail.com>
Signed-off-by: Mans Rullgard <mans@mansr.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
The sata_dwc_qc_prep() does nothing. Use the default ata_noop_qc_prep
instead.
Tested-by: Christian Lamparter <chunkeey@googlemail.com>
Signed-off-by: Mans Rullgard <mans@mansr.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Here we refactor HOSTDEV{P}_FROM_*() macros to fit one line and fix the
definition of HSDEV_FROM_HSDEVP() where wrong name of the parameter waas used.
Tested-by: Christian Lamparter <chunkeey@googlemail.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
This moves all global data into the driver private struct, thus
permitting multiple devices of this type to be used.
The core_scr_read/write() functions are replaced with equivalent
calls to the existing sata_dwc_scr_read/write().
Tested-by: Christian Lamparter <chunkeey@googlemail.com>
Signed-off-by: Mans Rullgard <mans@mansr.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
This adds support for powering on an optional PHY when activating the
device.
Tested-by: Christian Lamparter <chunkeey@googlemail.com>
Signed-off-by: Mans Rullgard <mans@mansr.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Currently this driver only works with a DesignWare DMA engine which it
registers manually using the second "reg" address range and interrupt
number from the DT node.
This patch makes the driver instead use the "dmas" property if present,
otherwise optionally falling back on the old way so existing device
trees can continue to work.
With this change, there is no longer any reason to depend on the 460EX
machine type so drop that from Kconfig.
Tested-by: Christian Lamparter <chunkeey@googlemail.com>
Signed-off-by: Mans Rullgard <mans@mansr.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
ata_sff_qc_issue() can't handle DMA commands and thus we have to avoid it for
them. Do call ata_bmdma_qc_issue() instead for this case. Note that the former
one distinguishes PIO and DMA mode and behaves accordingly.
Suggested-by: Christian Lamparter <chunkeey@googlemail.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Calling dmaengine_prep_slave_sg() for non-dma ATA commands is
unnecessary at best and could be harmful if the dma driver reacts
badly to this. It also causes this driver to print a bogus error
message in these cases.
This patch changes sata_dwc_qc_issue() to only do the dma setup
for dma commands and also reports an error to libata if if fails.
Tested-by: Christian Lamparter <chunkeey@googlemail.com>
Signed-off-by: Mans Rullgard <mans@mansr.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
There is no need to have a platform driver compiled since the DMA driver is
used as a library.
Tested-by: Christian Lamparter <chunkeey@googlemail.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
In the original code the DMA is always a flow controller. Set this accordingly
in updated code.
Tested-by: Christian Lamparter <chunkeey@googlemail.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
The burst size as defined by DMAengine API is in items of address width. Derive
burst size from AHB_DMA_BRST_DFLT (64 bytes) by dividing it to
DMA_SLAVE_BUSWIDTH_4_BYTES (4 bytes) that gives us 16 items.
Tested-by: Christian Lamparter <chunkeey@googlemail.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
The original code states:
Make sure a LLI block is not created that will span 8K max FIS
boundary. If the block spans such a FIS boundary, there is a chance
that a DMA burst will cross that boundary -- this results in an error
in the host controller.
Since we have switched to generic DMAengine API we satisfy above by setting
dma_boundary value to 0x1fff.
Suggested-by: Mans Rullgard <mans@mansr.com>
Tested-by: Christian Lamparter <chunkeey@googlemail.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
This patch fixes Machine Check "Data Write PLB Error" which happens
when libata-sff's ata_sff_dev_select is trying to write into the
device_addr in order to select a drive. However, SATA has no master
or slave devices like the old ATA Bus, therefore selecting a
different drive is kind of pointless.
Data Write PLB Error
Oops: Machine check, sig: 7 [#1]
PowerPC 44x Platform
Modules linked in:
CPU: 0 PID: 508 Comm: scsi_eh_0 Not tainted 4.6.0-rc3-next-20160412+ #10
[...]
NIP [c027e820] ata_sff_dev_select+0x3c/0x44
LR [c027e810] ata_sff_dev_select+0x2c/0x44
Call Trace:
[cec31cd0] [c027da00] ata_sff_postreset+0x40/0xb4 (unreliable)
[cec31ce0] [c027a03c] ata_eh_reset+0x5cc/0x928
[cec31d60] [c027a840] ata_eh_recover+0x330/0x10bc
[cec31df0] [c027bae0] ata_do_eh+0x4c/0xa4
[...]
Signed-off-by: Christian Lamparter <chunkeey@googlemail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Byte 69 bits 0:1 in the IDENTIFY DEVICE data indicate a
host-aware ZAC device.
Host-managed ZAC devices have their own individual signature,
and to not set the bits in the IDENTIFY DEVICE data.
And whenever we detect a ZAC-compatible device we should
be displaying the zoned block characteristics VPD page.
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Tejun Heo <tj@kernel.org>
Device-managed ZAC devices just set the zoned capabilities field
in INQUIRY byte 69 (cf ACS-4). This corresponds to the 'zoned'
field in the block device characteristics VPD page.
As this is only defined in SPC-5/SBC-4 we also need to update
the supported SCSI version descriptor.
Reviewed-by: Shaun Tancheff <shaun.tancheff@seagate.com>
Tested-by: Shaun Tancheff <shaun.tancheff@seagate.com>
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Tejun Heo <tj@kernel.org>
Add NCQ encapsulation for ZAC MANAGEMENT OUT and evaluate
NCQ Non-Data log pages to figure out if NCQ encapsulation
is supported.
Signed-off-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
ZAC drives implement a 'ZAC Management Out' command template,
which maps onto the ZBC OUT command.
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Tejun Heo <tj@kernel.org>
ZAC drives implement a 'ZAC Management In' command template,
which maps onto the ZBC IN command.
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Tejun Heo <tj@kernel.org>
If a device is disabled after error recovery it doesn't make
any sense to generate an ATA sense, but we should rather
return a generic sense code indicating the device is gone.
Signed-off-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Some commands like FPDMA RECEIVE or NCQ NON DATA can encapsulate
other commands to NCQ transport. So decode the subcmds, too.
Signed-off-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
When reading the NCQ Send/Recv log it might actually not
supported, thereby causing irritating messages
'READ LOG DMA EXT failed'.
Instead we should be reading the log directory first to
figure out if the log is actually supported before trying
to access it.
Signed-off-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Do not call ata_request_sense() if the sense code is already
present.
Signed-off-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Replace custom approach by %*ph specifier to dump small buffers in hex format.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
We pass struct dw_dma_chip to dw_dma_probe() anyway, thus we may use it to
pass a platform data as well.
While here, constify the source of the platform data.
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Rename SCSI_MAX_SG_SEGMENTS to SG_CHUNK_SIZE, which means the amount
we fit into a single scatterlist chunk.
Rename SCSI_MAX_SG_CHAIN_SEGMENTS to SG_MAX_SEGMENTS.
Will move these 2 generic definitions to scatterlist.h later.
Reviewed-by: Christoph Hellwig <hch@lst.de>
Acked-by: Bart Van Assche <bart.vanassche@sandisk.com> (for ib_srp changes)
Signed-off-by: Ming Lin <ming.l@ssi.samsung.com>
Acked-by: Tejun Heo <tj@kernel.org>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
AMD Seattle SATA controller mostly conforms to AHCI interface with some
special register to control SGPIO interface. In the case of an AHCI
controller, the SGPIO feature is ideally implemented using the
"Enclosure Management" register of the AHCI controller, but those
registeres are not implemented in the Seattle SoC. Instead SoC
(Rev B0 onwards) provides a 32-bit SGPIO control register which should
be programmed to control the activity, locate and fault LEDs.
The driver is based on ahci_platform driver.
Signed-off-by: Brijesh Singh <brijesh.singh@amd.com>
Acked-by: Hans de Goede <hdegoede@redhat.com>
CC: tj@kernel.org
CC: linux-ide@vger.kernel.org
Signed-off-by: Tejun Heo <tj@kernel.org>
This patch fix spelling typos found in Documentation/Docbook/libata.xml.
It is because the file was generated from comments in source,
I had to fix comments in libata-core.c
Signed-off-by: Masanari Iida <standby24x7@gmail.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Tejun Heo <tj@kernel.org>
The source and destination masters are reflecting buses or their layers to
where the different devices can be connected. The patch changes the master
names to reflect which one is related to which independently on the transfer
direction.
The outcome of the change is that the memory data width is now always limited
by a data width of the master which is dedicated to communicate to memory.
The patch will not break anything since all current users have the same data
width for all masters. Though it would be nice to revisit avr32 platforms to
check what is the actual hardware topology in use there. It seems that it has
one bus and two masters on it as stated by Table 8-2, that's why everything
works independently on the master in use. The purpose of the sequential patch
is to fix the driver for configuration of more than one bus.
The change is done in the assumption that src_master and dst_master are
reflecting a connection to the memory and peripheral correspondently on avr32
and otherwise on the rest.
Acked-by: Hans-Christian Egtvedt <egtvedt@samfundet.no>
Acked-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
When spinning up a drive from powered on standby mode (PUIS),
SETFEATURES_SPINUP is executed with the default timeout used
for any SETFEATURES subcommand, that is 5+10 seconds. The
total 15s is too short for some drives to complete spinup
(e.g. drives with a large indirection table stored on media),
resulting in ata_dev_read_id to fail twice on the execution
of SETFEATURES_SPINUP. For this feature, allow a larger
default timeout of 30 seconds. However, in the same spirit
as with the timeout of other feature subcommands, do not
ignore ata_probe_timeout if it is set).
Signed-off-by: Damien Le Moal <damien.lemoal@hgst.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Whenever the sense key is set to 'invalid parameter' we should
be filling out the sense-key specific information field in the
sense buffer.
tj: Added description of @fp for ata_mselect_*().
Signed-off-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
When generating a sense code of 'Invalid field in CDB' we
should be setting the bit pointer where appropriate.
Signed-off-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
If the sense code is 'Invalid field in CDB' we should be
setting the field pointer to the offending byte.
Signed-off-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Implement MODE SELECT for the control mode page to allow the OS
to switch to descriptor sense.
tj: Dropped s/sb/cmd->sense_buffer/ in ata_gen_ata_sense(). Added
@dev description to ata_msense_ctl_mode().
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Tejun Heo <tj@kernel.org>
Generate ATA pass-through sense for both fixed and descriptor
format sense.
Signed-off-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Whenever a sense code is set it would need to be evaluated to
update the error mask.
tj: Cosmetic formatting updates.
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Tejun Heo <tj@kernel.org>
Use ata_scsi_set_sense() throughout to ensure the sense code
format is consistent.
Signed-off-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
If NCQ autosense or the sense data reporting feature is enabled
the LBA of the offending command should be stored in the sense
data 'information' field.
tj: s/(u64)-1/U64_MAX/
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Tejun Heo <tj@kernel.org>
Use scsi_set_sense_information() instead of hand-crafted function.
Signed-off-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Return U64_MAX if ata_tf_read_block() could not decode the LBA
address, and do not set the information sense descriptor in
ata_gen_ata_sense() in these cases.
tj: s/(u64)-1/U64_MAX/
Signed-off-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
ata_to_sense_error() is called conditionally, so we should be
generating a default sense if the condition is not met.
Signed-off-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
ACS-4 defines a sense data reporting feature set.
This patch implements support for it.
tj: Cosmetic formatting updates.
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Tejun Heo <tj@kernel.org>
Some newer devices support NCQ autosense (cf ACS-4), so we should
be using it to retrieve the sense code and speed up recovery.
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Tejun Heo <tj@kernel.org>
On some SOCs PORTS_IMPL register value is never programmed by the
firmware and left at zero value. Which means that no sata ports are
available for software. AHCI driver used to cope up with this by
fabricating the port_map if the PORTS_IMPL register is read zero,
but recent patch broke this workaround as zero value was valid for
NVMe disks.
This patch adds ports-implemented DT bindings as workaround for this issue
in a way that DT can can override the PORTS_IMPL register in cases where
the firmware did not program it already.
Fixes: 566d1827df ("libata: disable forced PORTS_IMPL for >= AHCI 1.3")
Cc: stable@vger.kernel.org # v4.5+
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Acked-by: Tejun Heo <tj@kernel.org>
Reviewed-by: Andy Gross <andy.gross@linaro.org>
Signed-off-by: Tejun Heo <tj@kernel.org>
In usecases where force_port_map is used saved_port_map is never set,
resulting in not programming the PORTS_IMPL register as part of initial
config. This patch fixes this by setting it to port_map even in case
where force_port_map is used, making it more inline with other parts of
the code.
Fixes: 566d1827df ("libata: disable forced PORTS_IMPL for >= AHCI 1.3")
Cc: stable@vger.kernel.org # v4.5+
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Acked-by: Tejun Heo <tj@kernel.org>
Reviewed-by: Andy Gross <andy.gross@linaro.org>
Signed-off-by: Tejun Heo <tj@kernel.org>
Pull libata updates from Tejun Heo:
- ahci grew runtime power management support so that the controller can
be turned off if no devices are attached.
- sata_via isn't dead yet. It got hotplug support and more refined
workaround for certain WD drives.
- Misc cleanups. There's a merge from for-4.5-fixes to avoid confusing
conflicts in ahci PCI ID table.
* 'for-4.6' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata:
ata: ahci_xgene: dereferencing uninitialized pointer in probe
AHCI: Remove obsolete Intel Lewisburg SATA RAID device IDs
ata: sata_rcar: Use ARCH_RENESAS
sata_via: Implement hotplug for VT6421
sata_via: Apply WD workaround only when needed on VT6421
ahci: Add runtime PM support for the host controller
ahci: Add functions to manage runtime PM of AHCI ports
ahci: Convert driver to use modern PM hooks
ahci: Cache host controller version
scsi: Drop runtime PM usage count after host is added
scsi: Set request queue runtime PM status back to active on resume
block: Add blk_set_runtime_active()
ata: ahci_mvebu: add support for Armada 3700 variant
libata: fix unbalanced spin_lock_irqsave/spin_unlock_irq() in ata_scsi_park_show()
libata: support AHCI on OCTEON platform
Merge second patch-bomb from Andrew Morton:
- a couple of hotfixes
- the rest of MM
- a new timer slack control in procfs
- a couple of procfs fixes
- a few misc things
- some printk tweaks
- lib/ updates, notably to radix-tree.
- add my and Nick Piggin's old userspace radix-tree test harness to
tools/testing/radix-tree/. Matthew said it was a godsend during the
radix-tree work he did.
- a few code-size improvements, switching to __always_inline where gcc
screwed up.
- partially implement character sets in sscanf
* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (118 commits)
sscanf: implement basic character sets
lib/bug.c: use common WARN helper
param: convert some "on"/"off" users to strtobool
lib: add "on"/"off" support to kstrtobool
lib: update single-char callers of strtobool()
lib: move strtobool() to kstrtobool()
include/linux/unaligned: force inlining of byteswap operations
include/uapi/linux/byteorder, swab: force inlining of some byteswap operations
include/asm-generic/atomic-long.h: force inlining of some atomic_long operations
usb: common: convert to use match_string() helper
ide: hpt366: convert to use match_string() helper
ata: hpt366: convert to use match_string() helper
power: ab8500: convert to use match_string() helper
power: charger_manager: convert to use match_string() helper
drm/edid: convert to use match_string() helper
pinctrl: convert to use match_string() helper
device property: convert to use match_string() helper
lib/string: introduce match_string() helper
radix-tree tests: add test for radix_tree_iter_next
radix-tree tests: add regression3 test
...
Core changes:
- The gpio_chip is now a *real device*. Until now the gpio chips
were just piggybacking the parent device or (gasp) floating in
space outside of the device model. We now finally make GPIO chips
devices. The gpio_chip will create a gpio_device which contains
a struct device, and this gpio_device struct is kept private.
Anything that needs to be kept private from the rest of the kernel
will gradually be moved over to the gpio_device.
- As a result of making the gpio_device a real device, we have added
resource management, so devm_gpiochip_add_data() will cut down on
overhead and reduce code lines. A huge slew of patches convert
almost all drivers in the subsystem to use this.
- Building on making the GPIO a real device, we add the first step
of a new userspace ABI: the GPIO character device. We take small
steps here, so we first add a pure *information* ABI and the tool
"lsgpio" that will list all GPIO devices on the system and all
lines on these devices. We can now discover GPIOs properly from
userspace. We still have not come up with a way to actually *use*
GPIOs from userspace.
- To encourage people to use the character device for the future,
we have it always-enabled when using GPIO. The old sysfs ABI is
still opt-in (and can be used in parallel), but is marked as
deprecated. We will keep it around for the foreseeable future,
but it will not be extended to cover ever more use cases.
Cleanup:
- Bjorn Helgaas removed a whole slew of per-architecture <asm/gpio.h>
includes. This dates back to when GPIO was an opt-in feature and
no shared library even existed: just a header file with proper
prototypes was provided and all semantics were up to the arch to
implement. These patches make the GPIO chip even more a proper
device and cleans out leftovers of the old in-kernel API here
and there. Still some cruft is left but it's very little now.
- There is still some clamping of return values for .get() going
on, but we now return sane values in the vast majority of drivers
and the errorpath is sanitized. Some patches for powerpc, blackfin
and unicore still drop in.
- We continue to switch the ARM, MIPS, blackfin, m68k local GPIO
implementations to use gpiochip_add_data() and cut down on code
lines.
- MPC8xxx is converted to use the generic GPIO helpers.
- ATH79 is converted to use the generic GPIO helpers.
New drivers:
- WinSystems WS16C48
- Acces 104-DIO-48E
- F81866 (a F7188x variant)
- Qoric (a MPC8xxx variant)
- TS-4800
- SPI serializers (pisosr): simple 74xx shift registers connected
to SPI to obtain a dirt-cheap output-only GPIO expander.
- Texas Instruments TPIC2810
- Texas Instruments TPS65218
- Texas Instruments TPS65912
- X-Gene (ARM64) standby GPIO controller
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Merge tag 'gpio-v4.6-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio
Pull GPIO updates from Linus Walleij:
"This is the bulk of GPIO changes for kernel v4.6. There is quite a
lot of interesting stuff going on.
The patches to other subsystems and arch-wide are ACKed as far as
possible, though I consider things like per-arch <asm/gpio.h> as
essentially a part of the GPIO subsystem so it should not be needed.
Core changes:
- The gpio_chip is now a *real device*. Until now the gpio chips
were just piggybacking the parent device or (gasp) floating in
space outside of the device model.
We now finally make GPIO chips devices. The gpio_chip will create
a gpio_device which contains a struct device, and this gpio_device
struct is kept private. Anything that needs to be kept private
from the rest of the kernel will gradually be moved over to the
gpio_device.
- As a result of making the gpio_device a real device, we have added
resource management, so devm_gpiochip_add_data() will cut down on
overhead and reduce code lines. A huge slew of patches convert
almost all drivers in the subsystem to use this.
- Building on making the GPIO a real device, we add the first step of
a new userspace ABI: the GPIO character device. We take small
steps here, so we first add a pure *information* ABI and the tool
"lsgpio" that will list all GPIO devices on the system and all
lines on these devices.
We can now discover GPIOs properly from userspace. We still have
not come up with a way to actually *use* GPIOs from userspace.
- To encourage people to use the character device for the future, we
have it always-enabled when using GPIO. The old sysfs ABI is still
opt-in (and can be used in parallel), but is marked as deprecated.
We will keep it around for the foreseeable future, but it will not
be extended to cover ever more use cases.
Cleanup:
- Bjorn Helgaas removed a whole slew of per-architecture <asm/gpio.h>
includes.
This dates back to when GPIO was an opt-in feature and no shared
library even existed: just a header file with proper prototypes was
provided and all semantics were up to the arch to implement. These
patches make the GPIO chip even more a proper device and cleans out
leftovers of the old in-kernel API here and there.
Still some cruft is left but it's very little now.
- There is still some clamping of return values for .get() going on,
but we now return sane values in the vast majority of drivers and
the errorpath is sanitized. Some patches for powerpc, blackfin and
unicore still drop in.
- We continue to switch the ARM, MIPS, blackfin, m68k local GPIO
implementations to use gpiochip_add_data() and cut down on code
lines.
- MPC8xxx is converted to use the generic GPIO helpers.
- ATH79 is converted to use the generic GPIO helpers.
New drivers:
- WinSystems WS16C48
- Acces 104-DIO-48E
- F81866 (a F7188x variant)
- Qoric (a MPC8xxx variant)
- TS-4800
- SPI serializers (pisosr): simple 74xx shift registers connected to
SPI to obtain a dirt-cheap output-only GPIO expander.
- Texas Instruments TPIC2810
- Texas Instruments TPS65218
- Texas Instruments TPS65912
- X-Gene (ARM64) standby GPIO controller"
* tag 'gpio-v4.6-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio: (194 commits)
Revert "Share upstreaming patches"
gpio: mcp23s08: Fix clearing of interrupt.
gpiolib: Fix comment referring to gpio_*() in gpiod_*()
gpio: pca953x: Fix pca953x_gpio_set_multiple() on 64-bit
gpio: xgene: Fix kconfig for standby GIPO contoller
gpio: Add generic serializer DT binding
gpio: uapi: use 0xB4 as ioctl() major
gpio: tps65912: fix bad merge
Revert "gpio: lp3943: Drop pin_used and lp3943_gpio_request/lp3943_gpio_free"
gpio: omap: drop dev field from gpio_bank structure
gpio: mpc8xxx: Slightly update the code for better readability
gpio: mpc8xxx: Remove *read_reg and *write_reg from struct mpc8xxx_gpio_chip
gpio: mpc8xxx: Fixup setting gpio direction output
gpio: mcp23s08: Add support for mcp23s18
dt-bindings: gpio: altera: Fix altr,interrupt-type property
gpio: add driver for MEN 16Z127 GPIO controller
gpio: lp3943: Drop pin_used and lp3943_gpio_request/lp3943_gpio_free
gpio: timberdale: Switch to devm_ioremap_resource()
gpio: ts4800: Add IMX51 dependency
gpiolib: rewrite gpiodev_add_to_list
...
The new helper returns index of the mathing string in an array. We
would use it here.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Tejun Heo <tj@kernel.org>
Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
If the call to acpi_get_object_info() fails then "info" hasn't been
initialized. In that situation, we already know that "version" should
be XGENE_AHCI_V1 so we don't actually need to dereference "info".
Fixes: c9802a4be6 ('ata: ahci_xgene: Add AHCI Support for 2nd HW version of APM X-Gene SoC AHCI SATA Host controller.')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
These PCI device IDs have been removed from the Intel Lewisburg design
specification. They are no longer needed.
Signed-off-by: Scott Lawson <scott.lawson@intel.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Make use of ARCH_RENESAS in place of ARCH_SHMOBILE.
This is part of an ongoing process to migrate from ARCH_SHMOBILE to
ARCH_RENESAS the motivation for which being that RENESAS seems to be a more
appropriate name than SHMOBILE for the majority of Renesas ARM based SoCs.
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
The HPCP bit is set by bioses for on-board sata ports either because
they think sata is hotplug capable in general or to allow Windows
to display a "device eject" icon on ports which are routed to an
external connector bracket.
However in Redhat Bugzilla #1310682, users report that with kernel 4.4,
where this bit test first appeared, a lot of partitions on sata drives
are now mounted automatically.
This patch should fix redhat and a lot of other distros which
unconditionally automount all devices which have the "removable"
bit set.
Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Fixes: 8a3e33cf92 ("ata: ahci: find eSATA ports and flag them as removable" changes userspace behavior)
Link: http://lkml.kernel.org/g/56CF35FA.1070500@redhat.com
Cc: stable@vger.kernel.org #v4.4+
Due to Errata in ThunderX, HOST_IRQ_STAT should be
cleared before leaving the interrupt handler.
The patch attempts to satisfy the need.
Changes from V2:
- removed newfile
- code is now under CONFIG_ARM64
Changes from V1:
- Rebased on top of libata/for-4.6
- Moved ThunderX intr handler to new file
tj: Minor adjustments to comments.
Signed-off-by: Tirumalesh Chalamarla <tchalamarla@caviumnetworks.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Currently, workaround for broken WD drives is applied always, slowing
down all drives. And it has a bug - it's not applied after resume.
Apply the workaround only if the error really appears
(SErr == 0x1000500). This allows unaffected drives to run at full speed
(provided that no affected drive is connected to the controller).
Also make sure the workaround is re-applied on resume.
Tested on VT6421.
As SCR registers access is known to cause problems on VT6420 (and I
don't have it to test), keep the workaround applied always on VT6420.
Unaffected drive (Hitachi HDS721680PLA380):
Before:
$ hdparm -t --direct /dev/sdb
/dev/sdb:
Timing O_DIRECT disk reads: 160 MB in 3.01 seconds = 53.16 MB/sec
After:
$ hdparm -t --direct /dev/sdb
/dev/sdb:
Timing O_DIRECT disk reads: 200 MB in 3.01 seconds = 66.47 MB/sec
Affected drive (WDC WD5003ABYX-18WERA0):
Before:
$ hdparm -t --direct /dev/sda
/dev/sda:
Timing O_DIRECT disk reads: 180 MB in 3.02 seconds = 59.51 MB/sec
After:
$ hdparm -t --direct /dev/sdb
/dev/sdb:
Timing O_DIRECT disk reads: 156 MB in 3.03 seconds = 51.48 MB/sec
$ hdparm -t --direct /dev/sdb
/dev/sdb:
Timing O_DIRECT disk reads: 180 MB in 3.02 seconds = 59.64 MB/sec
The first hdparm is slower because of the error:
[ 50.408042] ata5: Incompatible drive: enabling workaround. This slows down transfer rate to ~60 MB/s
[ 50.728052] ata5: SATA link up 1.5 Gbps (SStatus 113 SControl 310)
[ 50.744834] ata5.00: configured for UDMA/133
Signed-off-by: Ondrej Zary <linux@rainbow-software.org>
Signed-off-by: Tejun Heo <tj@kernel.org>
This patch adds runtime PM support for the AHCI host controller driver so
that the host controller is powered down when all SATA ports are runtime
suspended. Powering down the AHCI host controller can reduce power
consumption and possibly allow the CPU to enter lower power idle states
(S0ix) during runtime.
Runtime PM is blocked by default and needs to be unblocked from userspace
as needed (via power/* sysfs nodes).
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Add new functions ahci_rpm_get_port()/ahci_rpm_put_port() that change
runtime PM status of AHCI ports. Depending if the AHCI host has runtime PM
enabled or disabled calling these may trigger runtime suspend/resume of the
host controller.
We also call these functions in appropriate places to make sure host
controller registers are available before using them.
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
In order to add support for runtime PM to the ahci driver we first need to
convert the driver to use modern non-legacy system suspend hooks. There
should be no functional changes.
tj: Updated .driver.pm init for older compilers as suggested by Andy
and Chrsitoph.
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Cc: Andy Shevchenko <andy.shevchenko@gmail.com>
Cc: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Tejun Heo <tj@kernel.org>
This allows sysfs nodes to read the cached value directly instead of
powering up possibly runtime suspended controller.
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
The main difference in the new Armada 3700 is that no address
decoding needs to take place in the driver probe.
[gregory.clement@free-electrons.com: reformulate the commit log]
Signed-off-by: Lior Amsalem <alior@marvell.com>
Reviewed-by: Nadav Haklai <nadavh@marvell.com>
Tested-by: Nadav Haklai <nadavh@marvell.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
ata_scsi_park_show() was pairing spin_lock_irqsave() with
spin_unlock_irq(). As the function is always called with irq enabled,
it didn't actually break anything. Use spin_lock_irq() instead.
Signed-off-by: Tejun Heo <tj@kernel.org>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Cc: Elias Oltmanns <eo@nebensachen.de>
This patch complements the list of device IDs previously
added for lewisburg sata.
Signed-off-by: Alexandra Yates <alexandra.yates@linux.intel.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: stable@vger.kernel.org
The RB532 platform specific irq_to_gpio() implementation has been
removed with commit 832f5dacfa ("MIPS: Remove all the uses of
custom gpio.h"). Now the platform uses the generic stub which causes
the following error:
pata-rb532-cf pata-rb532-cf: no GPIO found for irq149
pata-rb532-cf: probe of pata-rb532-cf failed with error -2
Drop the irq_to_gpio() call and get the GPIO number from platform
data instead. After this change, the driver works again:
scsi host0: pata-rb532-cf
ata1: PATA max PIO4 irq 149
ata1.00: CFA: CF 1GB, 20080820, max MWDMA4
ata1.00: 1989792 sectors, multi 0: LBA
ata1.00: configured for PIO4
scsi 0:0:0:0: Direct-Access ATA CF 1GB 0820 PQ: 0\
ANSI: 5
sd 0:0:0:0: [sda] 1989792 512-byte logical blocks: (1.01 GB/971 MiB)
sd 0:0:0:0: [sda] Write Protect is off
sd 0:0:0:0: [sda] Write cache: disabled, read cache: enabled, doesn't\
support DPO or FUA
sda: sda1 sda2
sd 0:0:0:0: [sda] Attached SCSI disk
Fixes: 832f5dacfa ("MIPS: Remove all the uses of custom gpio.h")
Cc: Alban Bedel <albeu@free.fr>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: <stable@vger.kernel.org> #v4.3+
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Signed-off-by: Tejun Heo <tj@kernel.org>
Most arches have an asm/gpio.h that merely includes linux/gpio.h. The
others select ARCH_HAVE_CUSTOM_GPIO_H, and when that's selected,
linux/gpio.h includes asm/gpio.h.
Therefore, code should include linux/gpio.h instead of including asm/gpio.h
directly.
Remove includes of asm/gpio.h, adding an include of linux/gpio.h when
necessary.
This is a follow-on to 7563bbf89d ("gpiolib/arches: Centralise
bolierplate asm/gpio.h").
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
The OCTEON SATA controller is currently found on cn71XX devices.
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: David Daney <david.daney@cavium.com>
Signed-off-by: Vinita Gupta <vgupta@caviumnetworks.com>
Signed-off-by: Aleksey Makarov <aleksey.makarov@auriga.com>
Signed-off-by: Zubair Lutfullah Kakakhel <Zubair.Kakakhel@imgtec.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
As reported by Soohoon Lee, the HDIO_GET_32BIT ioctl does not
work correctly in compat mode with libata.
I have investigated the issue further and found multiple problems
that all appeared with the same commit that originally introduced
HDIO_GET_32BIT handling in libata back in linux-2.6.8 and presumably
also linux-2.4, as the code uses "copy_to_user(arg, &val, 1)" to copy
a 'long' variable containing either 0 or 1 to user space.
The problems with this are:
* On big-endian machines, this will always write a zero because it
stores the wrong byte into user space.
* In compat mode, the upper three bytes of the variable are updated
by the compat_hdio_ioctl() function, but they now contain
uninitialized stack data.
* The hdparm tool calling this ioctl uses a 'static long' variable
to store the result. This means at least the upper bytes are
initialized to zero, but calling another ioctl like HDIO_GET_MULTCOUNT
would fill them with data that remains stale when the low byte
is overwritten. Fortunately libata doesn't implement any of the
affected ioctl commands, so this would only happen when we query
both an IDE and an ATA device in the same command such as
"hdparm -N -c /dev/hda /dev/sda"
* The libata code for unknown reasons started using ATA_IOC_GET_IO32
and ATA_IOC_SET_IO32 as aliases for HDIO_GET_32BIT and HDIO_SET_32BIT,
while the ioctl commands that were added later use the normal
HDIO_* names. This is harmless but rather confusing.
This addresses all four issues by changing the code to use put_user()
on an 'unsigned long' variable in HDIO_GET_32BIT, like the IDE subsystem
does, and by clarifying the names of the ioctl commands.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reported-by: Soohoon Lee <Soohoon.Lee@f5.com>
Tested-by: Soohoon Lee <Soohoon.Lee@f5.com>
Cc: stable@vger.kernel.org
Signed-off-by: Tejun Heo <tj@kernel.org>
Due to H/W errata, the HOST_IRQ_STAT register misses the edge interrupt
when clearing the HOST_IRQ_STAT register and hardware reporting the
PORT_IRQ_STAT register happens to be at the same clock cycle.
Signed-off-by: Suman Tripathi <stripathi@apm.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
The flexibility to override the irq handles in the LLD's are already
present, so controllers implementing a edge trigger latch can
implement their own interrupt handler inside the driver. This patch
removes the AHCI_HFLAG_EDGE_IRQ support from libahci and moves edge
irq handling to ahci_xgene.
tj: Minor update to description.
Signed-off-by: Suman Tripathi <stripathi@apm.com>
Signed-off-by: Tejun Heo <tj@kenrel.org>
This patch implements the capability to override the generic AHCI
interrupt handler so that specific ahci drivers can implement their
own custom interrupt handler routines. It also exports
ahci_handle_port_intr so that custom irq_handler implementations can
use it.
tj: s/ahci_irq_handler/irq_handler/ and updated description.
Signed-off-by: Suman Tripathi <stripathi@apm.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Drivers should include asm/pci-bridge.h only when they need the arch-
specific things provided there. Outside of the arch/ directories, the only
drivers that actually need things provided by asm/pci-bridge.h are the
powerpc RPA hotplug drivers in drivers/pci/hotplug/rpa*.
Remove the includes of asm/pci-bridge.h from the other drivers, adding an
include of linux/pci.h if necessary.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
The bulk of ATA host state machine is implemented by
ata_sff_hsm_move(). The function is called from either the interrupt
handler or, if polling, a work item. Unlike from the interrupt path,
the polling path calls the function without holding the host lock and
ata_sff_hsm_move() selectively grabs the lock.
This is completely broken. If an IRQ triggers while polling is in
progress, the two can easily race and end up accessing the hardware
and updating state machine state at the same time. This can put the
state machine in an illegal state and lead to a crash like the
following.
kernel BUG at drivers/ata/libata-sff.c:1302!
invalid opcode: 0000 [#1] SMP DEBUG_PAGEALLOC KASAN
Modules linked in:
CPU: 1 PID: 10679 Comm: syz-executor Not tainted 4.5.0-rc1+ #300
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011
task: ffff88002bd00000 ti: ffff88002e048000 task.ti: ffff88002e048000
RIP: 0010:[<ffffffff83a83409>] [<ffffffff83a83409>] ata_sff_hsm_move+0x619/0x1c60
...
Call Trace:
<IRQ>
[<ffffffff83a84c31>] __ata_sff_port_intr+0x1e1/0x3a0 drivers/ata/libata-sff.c:1584
[<ffffffff83a85611>] ata_bmdma_port_intr+0x71/0x400 drivers/ata/libata-sff.c:2877
[< inline >] __ata_sff_interrupt drivers/ata/libata-sff.c:1629
[<ffffffff83a85bf3>] ata_bmdma_interrupt+0x253/0x580 drivers/ata/libata-sff.c:2902
[<ffffffff81479f98>] handle_irq_event_percpu+0x108/0x7e0 kernel/irq/handle.c:157
[<ffffffff8147a717>] handle_irq_event+0xa7/0x140 kernel/irq/handle.c:205
[<ffffffff81484573>] handle_edge_irq+0x1e3/0x8d0 kernel/irq/chip.c:623
[< inline >] generic_handle_irq_desc include/linux/irqdesc.h:146
[<ffffffff811a92bc>] handle_irq+0x10c/0x2a0 arch/x86/kernel/irq_64.c:78
[<ffffffff811a7e4d>] do_IRQ+0x7d/0x1a0 arch/x86/kernel/irq.c:240
[<ffffffff86653d4c>] common_interrupt+0x8c/0x8c arch/x86/entry/entry_64.S:520
<EOI>
[< inline >] rcu_lock_acquire include/linux/rcupdate.h:490
[< inline >] rcu_read_lock include/linux/rcupdate.h:874
[<ffffffff8164b4a1>] filemap_map_pages+0x131/0xba0 mm/filemap.c:2145
[< inline >] do_fault_around mm/memory.c:2943
[< inline >] do_read_fault mm/memory.c:2962
[< inline >] do_fault mm/memory.c:3133
[< inline >] handle_pte_fault mm/memory.c:3308
[< inline >] __handle_mm_fault mm/memory.c:3418
[<ffffffff816efb16>] handle_mm_fault+0x2516/0x49a0 mm/memory.c:3447
[<ffffffff8127dc16>] __do_page_fault+0x376/0x960 arch/x86/mm/fault.c:1238
[<ffffffff8127e358>] trace_do_page_fault+0xe8/0x420 arch/x86/mm/fault.c:1331
[<ffffffff8126f514>] do_async_page_fault+0x14/0xd0 arch/x86/kernel/kvm.c:264
[<ffffffff86655578>] async_page_fault+0x28/0x30 arch/x86/entry/entry_64.S:986
Fix it by ensuring that the polling path is holding the host lock
before entering ata_sff_hsm_move() so that all hardware accesses and
state updates are performed under the host lock.
Signed-off-by: Tejun Heo <tj@kernel.org>
Reported-and-tested-by: Dmitry Vyukov <dvyukov@google.com>
Link: http://lkml.kernel.org/g/CACT4Y+b_JsOxJu2EZyEf+mOXORc_zid5V1-pLZSroJVxyWdSpw@mail.gmail.com
Cc: stable@vger.kernel.org
ata_sff_hsm_move() triggers BUG if it sees a host state machine state
that it dind't expect. The risk for data corruption when the
condition occurs is low as it's highly unlikely that it would lead to
spurious completion of commands. The BUG occasionally triggered for
subtle race conditions in the driver. Let's downgrade it to WARN so
that it doesn't kill the machine unnecessarily.
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Dmitry Vyukov <dvyukov@google.com>
Some early controllers incorrectly reported zero ports in PORTS_IMPL
register and the ahci driver fabricates PORTS_IMPL from the number of
ports in those cases. This hasn't mattered but with the new nvme
controllers there are cases where zero PORTS_IMPL is valid and should
be honored.
Disable the workaround for >= AHCI 1.3.
Signed-off-by: Tejun Heo <tj@kernel.org>
Reported-by: Andy Lutomirski <luto@amacapital.net>
Link: http://lkml.kernel.org/g/CALCETrU7yMvXEDhjAUShoHEhDwifJGapdw--BKxsP0jmjKGmRw@mail.gmail.com
Cc: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Cc: stable@vger.kernel.org
The AHCI driver code stops and starts port DMA engines at will
without considering the power state of the particular port. The
AHCI specification isn't very clear on how to handle this scenario,
leaving implementation open to interpretation.
Broadcom's STB SATA host controller is unable to handle port DMA
controller restarts when the port in question is in low power mode.
When a port enters partial or slumber mode, its PHY is powered down.
When a controller restart is requested, the controller's internal
state machine expects the PHY to be brought back up by software which
never happens in this case, resulting in failures.
To avoid this situation, logic is added to manually wake up the port
just before its DMA engine is stopped, if the port happens to be in
a low power state. HBA initiated power management ensures that the port
eventually returns to its configured low power state, when the link is
idle (as per the conditions listed in the spec). A new host flag is also
added to ensure this logic is only exercised for hosts with the above
limitation.
tj: Formatting changes.
Signed-off-by: Danesh Petigara <dpetigara@broadcom.com>
Reviewed-by: Markus Mayer <mmayer@broadcom.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Pull libata updates from Tejun Heo:
"Mostly low level driver specific changes.
Two changes are somewhat noteworthy. First, Dan's patchset to support
per-port msix interrupt handling for ahci, which was tried last cycle
but had to be backed out due to a couple issues, is back and seems to
be working fine. Second, libata exception handling now uses
usleep_range() instead of msleep() for sleeps < 20ms which can make
things snappier in some corner cases"
* 'for-4.5' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata:
libata: skip debounce delay on link resume
ata: ahci_brcmstb: disable DIPM support
ata: ahci_brcmstb: enable support for ALPM
drivers: libata-core: Use usleep_range() instead of msleep() for short sleeps (<20 ms)
sata_sx4: correctly handling failed allocation
ata: ahci_brcmstb: add support for MIPS-based platforms
ahci: qoriq: Adjust the default register values on ls1021a
ahci: qoriq: Update the default Rx watermark value
ahci: qoriq: Adjust the default register values on ls1043a
ahci: compile out msi/msix infrastructure
ata: core: fix irq description on AHCI single irq systems
ata: ahci_brcmstb: remove unused definitions
ata: ahci_brcmstb: add a quirk for MIPS-based platforms
ata: ahci_brcmstb: disable NCQ for MIPS-based platforms
ata: sata_rcar: Remove obsolete platform_device_id entries
sata_rcar: Add compatible string for r8a7795
ahci: kill 'intr_status'
ahci: switch from 'threaded' to 'hardirq' interrupt handling
ahci: per-port msix support
The link resume logic uses a 200msec delay while debouncing
the SControl register. The rationale behind that delay is
to accommodate some PHYs that behave badly if their SStatus/
SControl registers are pounded immediately on resume.
The Broadcom STB SATA PHY does not seem to have this issue.
This patch introduces a new link flag that allows platforms
to skip the debounce delay if it isn't needed.
Signed-off-by: Danesh Petigara <dpetigara@broadcom.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
The Broadcom STB SATA host controller does not support device
initiated power management. Disable support for this feature
so the driver never sends SETFEATURES commands to the device
to enable/disable DIPM.
Signed-off-by: Danesh Petigara <dpetigara@broadcom.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Shaun Tancheff