Commit Graph

3170 Commits

Author SHA1 Message Date
Alexandra Yates
342decff2b ahci: Intel DNV device IDs SATA
Adding Intel codename DNV platform device IDs for SATA.

Signed-off-by: Alexandra Yates <alexandra.yates@linux.intel.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: stable@vger.kernel.org
2016-02-10 11:35:55 -05:00
Tejun Heo
8eee1d3ed5 libata: fix sff host state machine locking while polling
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
2016-02-01 11:33:21 -05:00
Tejun Heo
a588afc920 libata-sff: use WARN instead of BUG on illegal host state machine state
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>
2016-01-29 07:06:53 -05:00
Tejun Heo
566d1827df libata: disable forced PORTS_IMPL for >= AHCI 1.3
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
2016-01-25 15:45:55 -05:00
Shikha Jain
b00622fc34 libata: blacklist a Viking flash model for MWDMA corruption
Viking flash model VRFDFC22048UCHC-TE causes data corruption in MWDMA mode.

Cc: xe-kernel@external.cisco.com
Signed-off-by: Shikha Jain <shikjain@cisco.com>
Signed-off-by: Anil Veliyankara Madam <aveliyan@cisco.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2016-01-25 15:24:13 -05:00
Danesh Petigara
fb32963355 drivers: ata: wake port before DMA stop for ALPM
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>
2016-01-25 15:20:44 -05:00
Linus Torvalds
8c930204ce Merge branch 'for-4.5' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata
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
2016-01-11 19:33:59 -08:00
Danesh Petigara
e39b2bb3b7 libata: skip debounce delay on link resume
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>
2016-01-08 11:50:14 -05:00
Danesh Petigara
6ca92dd7af ata: ahci_brcmstb: disable DIPM support
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>
2016-01-08 11:29:38 -05:00
Danesh Petigara
6863caaf15 ata: ahci_brcmstb: enable support for ALPM
Enable support for ALPM in the host controller's capabilities
register. Also adjust the PLL  timeout to give it enough time
to lock when the port exits slumber mode.

tj: minor style updates

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>
2016-01-08 11:28:08 -05:00
Anil Veliyankara Madam
848c392086 drivers: libata-core: Use usleep_range() instead of msleep() for short sleeps (<20 ms)
Since msleep() may sleep longer than intended time for values less
than 20ms, this patch allows the use of usleep_range for waits less
that 20ms. usleep_range is a finer precision implementation of
msleep and is designed to be a drop-in replacement for udelay
where a precise sleep/busy-wait is unnecessary.

More details can be found at http://lkml.org/lkml/2007/8/3/250
and in Documentation/timers/timers-howto.txt.

This change has been done to improve the performace in PIO6 mode
which is used by viking flash.

Cc: xe-kernel@external.cisco.com
Signed-off-by: Anil Veliyankara Madam <aveliyan@cisco.com>
Signed-off-by: Shikha Jain <shikjain@cisco.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2016-01-08 10:36:57 -05:00
Insu Yun
427cc61a44 sata_sx4: correctly handling failed allocation
Since kzalloc can be failed in memory pressure, return error when failed.

Signed-off-by: Insu Yun <wuninsu@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2015-12-31 21:33:42 -05:00
Jaedon Shin
1980eb9bd7 ata: ahci_brcmstb: add support for MIPS-based platforms
The BCM7xxx ARM-based and MIPS-based platforms share a similar hardware
block for AHCI SATA3.

This new compatible string, "brcm,bcm7425-ahci", may be used for most
MIPS-based platforms of 40nm process technology.

Signed-off-by: Jaedon Shin <jaedon.shin@gmail.com>
Tested-by: Florian Fainelli <f.fainelli@gmail.com>
Acked-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2015-12-31 21:19:35 -05:00
Tang Yuantian
dfcdc5fe03 ahci: qoriq: Adjust the default register values on ls1021a
Updated the registers' values to enhance SATA performance and
reliability on ls1021a soc.

Signed-off-by: Tang Yuantian <Yuantian.Tang@freescale.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2015-12-16 10:24:35 -05:00
Tang Yuantian
e3a6dadc6d ahci: qoriq: Update the default Rx watermark value
The PTC[RXWM] sets the watermark value for Rx FIFO. The default
value 0x20 might be insufficient for some hard drives. If the
watermark value is too small, a single-cycle overflow may occur
and is reported as a CRC or internal error in the PxSERR register.
Updated the value to 0x29 according to the validation test.
All LS platforms are affected.

Signed-off-by: Tang Yuantian <Yuantian.Tang@freescale.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2015-12-16 10:24:35 -05:00
Tang Yuantian
ef0cc7fef4 ahci: qoriq: Adjust the default register values on ls1043a
Updated the registers' values to enhance SATA performance and
reliability.

Signed-off-by: Tang Yuantian <Yuantian.Tang@freescale.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2015-12-16 10:24:35 -05:00
Andreas Werner
4f2568f5cb ata/sata_fsl.c: add ATA_FLAG_NO_LOG_PAGE to blacklist the controller for log page reads
Every attempt to issue a read log page command lockup the controller.
The command is currently sent if the sata device includes the devlsp feature
to read out the timing data.
This attempt to read the data, locks up the controller and the device
is not recognzied correctly (failed to set xfermode) and cannot be accessed.

This was found on Freescale P1013/P1022 and T4240 CPUs
using a ATP IG mSATA 4GB with the devslp feature.

fsl-sata ff718000.sata: Sata FSL Platform/CSB Driver init
[    1.254195] scsi0 : sata_fsl
[    1.256004] ata1: SATA max UDMA/133 irq 74
[    1.370666] fsl-gianfar ethernet.3: enabled errata workarounds, flags: 0x4
[    1.470671] fsl-gianfar ethernet.4: enabled errata workarounds, flags: 0x4
[    1.775584] ata1: Signature Update detected @ 504 msecs
[    1.947594] ata1: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
[    1.948366] ata1.00: ATA-8: ATP IG mSATA, 20150311, max UDMA/133
[    1.948371] ata1.00: 7732368 sectors, multi 0: LBA
[    1.948843] ata1.00: failed to get Identify Device Data, Emask 0x1
[    1.948857] ata1.00: failed to set xfermode (err_mask=0x40)
[    7.467557] ata1: Signature Update detected @ 504 msecs
[    7.639560] ata1: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
[    7.651320] ata1.00: failed to get Identify Device Data, Emask 0x1
[    7.651360] ata1.00: failed to set xfermode (err_mask=0x40)
[    7.655628] ata1: limiting SATA link speed to 1.5 Gbps
[    7.659458] ata1.00: limiting speed to UDMA/133:PIO3
[   13.163554] ata1: Signature Update detected @ 504 msecs
[   13.335558] ata1: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
[   13.347298] ata1.00: failed to get Identify Device Data, Emask 0x1
[   13.347334] ata1.00: failed to set xfermode (err_mask=0x40)
[   13.351601] ata1.00: disabled
[   13.353278] ata1: exception Emask 0x50 SAct 0x0 SErr 0x800 action 0x6 frozen t4
[   13.359281] ata1: SError: { HostInt }
[   13.361644] ata1: hard resetting link

Signed-off-by: Andreas Werner <andreas.werner@men.de>
Signed-off-by: Tejun Heo <tj@kernel.org>
2015-12-07 10:25:57 -05:00
Andreas Werner
ea013a9b20 libata-eh.c: Introduce new ata port flag for controller which lockup on read log page
Some controller lockup on a ata_read_log_page.
Add new ata port flag ATA_FLAG_NO_LOG_PAGE which can used
to blacklist a controller.

If this flag is set, any attempt to read a log page returns an error
without actually issuing the command.

Signed-off-by: Andreas Werner <andreas.werner@men.de>
Signed-off-by: Tejun Heo <tj@kernel.org>
2015-12-07 10:25:57 -05:00
Dan Williams
f893180b79 ahci: compile out msi/msix infrastructure
Quoting Arnd:
    The AHCI driver is used for some on-chip devices that do not use PCI
    for probing, and it can be built even when CONFIG_PCI is disabled, but
    that now results in a build failure:

    ata/libahci.c: In function 'ahci_host_activate_multi_irqs':
    ata/libahci.c:2475:4: error: invalid use of undefined type 'struct msix_entry'
    ata/libahci.c:2475:21: error: dereferencing pointer to incomplete type 'struct msix_entry'

Add ifdef CONFIG_PCI_MSI infrastructure to compile out the multi-msi and
multi-msix code.

Reported-by: Arnd Bergmann <arnd@arndb.de>
Tested--by: Arnd Bergmann <arnd@arndb.de>
[arnd: fix up pci enabled case]
Reported-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Fixes: d684a90d38 ("ahci: per-port msix support")
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2015-12-07 09:50:01 -05:00
Heiner Kallweit
7e22c0024c ata: core: fix irq description on AHCI single irq systems
On my machine with single irq AHCI just the PCI id is printed as
description in /proc/interrupts.
I found a related discussion from beginning of this year:
http://www.gossamer-threads.com/lists/linux/kernel/2117335

Seems like 4f37b50476 ("libata: Use dev_name() for request_irq() to
distinguish devices") tried to fix displaying a proper interrupt
description for one scenario but broke it for another one.

The mentioned discussion ended in the current situation being
considered as broken but w/o a patch to fix it.

The following patch is based on a proposal in this mail thread.
Now the interrupt is properly described as:
PCI-MSI 512000-edge      ahci[0000:00:1f.2]

By combining both values also the scenario that commit 4f37b50476
("libata: Use dev_name() for request_irq() to distinguish devices")
refers to should still be fine. There it should look like this now:
ahci[20100000.ide]

Using managed memory allocation ensures that the irq description
lives at least as long as the interrupt.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
2015-12-07 09:40:50 -05:00
Mikulas Patocka
d98f1cd0a3 sata_sil: disable trim
When I connect an Intel SSD to SATA SIL controller (PCI ID 1095:3114), any
TRIM command results in I/O errors being reported in the log. There is
other similar error reported with TRIM and the SIL controller:
https://bugs.centos.org/view.php?id=5880

Apparently the controller doesn't support TRIM commands. This patch
disables TRIM support on the SATA SIL controller.

ata7.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0
ata7.00: BMDMA2 stat 0x50001
ata7.00: failed command: DATA SET MANAGEMENT
ata7.00: cmd 06/01:01:00:00:00/00:00:00:00:00/a0 tag 0 dma 512 out
         res 51/04:01:00:00:00/00:00:00:00:00/a0 Emask 0x1 (device error)
ata7.00: status: { DRDY ERR }
ata7.00: error: { ABRT }
ata7.00: device reported invalid CHS sector 0
sd 8:0:0:0: [sdb] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
sd 8:0:0:0: [sdb] tag#0 Sense Key : Illegal Request [current] [descriptor]
sd 8:0:0:0: [sdb] tag#0 Add. Sense: Unaligned write command
sd 8:0:0:0: [sdb] tag#0 CDB: Write same(16) 93 08 00 00 00 00 00 21 95 88 00 20 00 00 00 00
blk_update_request: I/O error, dev sdb, sector 2200968

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Cc: stable@kernel.org
Signed-off-by: Tejun Heo <tj@kernel.org>
2015-11-30 10:02:49 -05:00
Xiangliang Yu
023113d24e AHCI: Fix softreset failed issue of Port Multiplier
Current code doesn't update port value of Port Multiplier(PM) when
sending FIS of softreset to device, command will fail if FBS is
enabled.

There are two ways to fix the issue: the first is to disable FBS
before sending softreset command to PM device and the second is
to update port value of PM when sending command.

For the first way, i can't find any related rule in AHCI Spec. The
second way can avoid disabling FBS and has better performance.

Signed-off-by: Xiangliang Yu <Xiangliang.Yu@amd.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: stable@vger.kernel.org
2015-11-30 10:01:29 -05:00
Jaedon Shin
2ef42f4a7e ata: ahci_brcmstb: remove unused definitions
Remove unused definitions, and this is to avoid confusion with MIPS-based
platforms.

Signed-off-by: Jaedon Shin <jaedon.shin@gmail.com>
Tested-by: Florian Fainelli <f.fainelli@gmail.com>
Acked-by: Brian Norris <computersforpeace@gmail.com>
2015-11-30 09:57:33 -05:00
Jaedon Shin
b46f79bc78 ata: ahci_brcmstb: add a quirk for MIPS-based platforms
Whereas ARM-based platforms have four phy interface registers and
information, the MIPS-based platforms have only three registers, and
there are no information and documentation. In the original BSP, It
using "strict-ahci" did not control these registers.

Signed-off-by: Jaedon Shin <jaedon.shin@gmail.com>
Tested-by: Florian Fainelli <f.fainelli@gmail.com>
Acked-by: Brian Norris <computersforpeace@gmail.com>
2015-11-30 09:57:32 -05:00
Jaedon Shin
7de3244530 ata: ahci_brcmstb: disable NCQ for MIPS-based platforms
The most MIPS-based platforms need to disable NCQ while have the NCQ
capability in HOST_CAP, and several ARM-based platforms (eg. BCM7349A0,
BCM7445A0, BCM7445B0) need to disable too.

Signed-off-by: Jaedon Shin <jaedon.shin@gmail.com>
Tested-by: Florian Fainelli <f.fainelli@gmail.com>
Acked-by: Brian Norris <computersforpeace@gmail.com>
2015-11-30 09:57:32 -05:00
Geert Uytterhoeven
7f64d64289 ata: sata_rcar: Remove obsolete platform_device_id entries
Since commit c99cd90d98 ("ARM: shmobile: r8a7779: Remove legacy
SoC code"), R-Car SoCs are only supported in generic DT-only ARM
multi-platform builds.  The driver doesn't need to match platform
devices by name anymore, hence remove the remaining platform_device_id
entries and platform device support.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Tejun Heo <tj@kernel.org>
2015-11-24 09:54:36 -05:00
Kouei Abe
fec7bc433a sata_rcar: Add compatible string for r8a7795
R-Car H3 SoC has compatible SATA controller with R-Car Gen2 SoCs.

Signed-off-by: Kouei Abe <kouei.abe.cp@renesas.com>
Signed-off-by: Yoshihiro Kaneko <ykaneko0929@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: Simon Horman <horms+renesas@verge.net.au>
2015-11-20 15:48:55 -05:00
Arnd Bergmann
4f1dd973ac sata/mvebu: use #ifdef around suspend/resume code
The newly added suspend/resume implementation for ahci_mvebu causes
a link error when CONFIG_PM_SLEEP is disabled:

ERROR: "ahci_platform_suspend_host" [drivers/ata/ahci_mvebu.ko] undefined!
ERROR: "ahci_platform_resume_host" [drivers/ata/ahci_mvebu.ko] undefined!

This adds the same #ifdef here that exists in the ahci_platform driver
which defines the above functions.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Fixes: d6ecf15814 ("ata: ahci_mvebu: add suspend/resume support")
Acked-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2015-11-20 14:59:43 -05:00
Dan Williams
f46c4bd16e ahci: kill 'intr_status'
This field in achi_port_priv was only used to support threaded
interrupts.  Now that we are hardirq only it can be deleted.

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2015-11-16 11:30:12 -05:00
Dan Williams
a6b7fb764e ahci: switch from 'threaded' to 'hardirq' interrupt handling
For high frequency I/O the overhead of threaded interrupts impacts
performance.  A quick out-of-the-box test (i.e. no affinity tuning)
shows ~10% random read performance at ~20% less cpu.  The cpu wins
appear to be from reduced lock contention.

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2015-11-16 11:29:10 -05:00
Dan Williams
d684a90d38 ahci: per-port msix support
Some AHCI controllers support per-port MSI-X vectors.  At the same time
the Linux AHCI driver needs to support one-off architectures that
implement a single MSI-X vector for all ports.  The heuristic for
enabling AHCI ports becomes, in order of preference:

1/ per-port multi-MSI-X

2/ per-port multi-MSI

3/ single MSI

4/ single MSI-X

5/ legacy INTX

This all depends on AHCI implementations with potentially broken MSI-X
requesting less vectors than the number of ports.  If this assumption is
violated we will need to start explicitly white-listing AHCI-MSIX
implementations.

Reported-by: Ricardo Neri <ricardo.neri@intel.com>
[ricardo: fix struct msix_entry handling]
Reported-by: kernel test robot <ying.huang@linux.intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2015-11-16 11:29:10 -05:00
Alexandra Yates
4d92f0099a ahci: Order SATA device IDs for codename Lewisburg
This change was to preserve the ascending order of device IDs.
There was an exception with the first two Lewisburg device IDs to
keep all device IDs of the same kind grouped by code name.

Signed-off-by: Alexandra Yates <alexandra.yates@linux.intel.com>
signed-off-by: Tejun Heo <tj@kernel.org>
2015-11-16 11:22:16 -05:00
Charles_Rose@Dell.com
c5967b79ec ahci: Add Device ID for Intel Sunrise Point PCH
This patch adds missing AHCI RAID SATA Device IDs for the Intel Sunrise
Point PCH.

Signed-off-by: Nanda Kishore Chinna <nanda_kishore_chinna@dell.com>
Signed-off-by: Charles Rose <charles_rose@dell.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2015-11-16 11:19:59 -05:00
Linus Torvalds
d83763f4a6 SCSI misc on 20151113
Sorry for the delay in this patch which was mostly caused by getting the
 merger of the mpt2/mpt3sas driver, which was seen as an essential item of
 maintenance work to do before the drivers diverge too much.  Unfortunately,
 this caused a compile failure (detected by linux-next), which then had to be
 fixed up and incubated.  In addition to the mpt2/3sas rework, there are
 updates from pm80xx, lpfc, bnx2fc, hpsa, ipr, aacraid, megaraid_sas, storvsc
 and ufs plus an assortment of changes including some year 2038 issues, a fix
 for a remove before detach issue in some drivers and a couple of other minor
 issues.
 
 Signed-off-by: James Bottomley <JBottomley@Odin.com>
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Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

Pull final round of SCSI updates from James Bottomley:
 "Sorry for the delay in this patch which was mostly caused by getting
  the merger of the mpt2/mpt3sas driver, which was seen as an essential
  item of maintenance work to do before the drivers diverge too much.
  Unfortunately, this caused a compile failure (detected by linux-next),
  which then had to be fixed up and incubated.

  In addition to the mpt2/3sas rework, there are updates from pm80xx,
  lpfc, bnx2fc, hpsa, ipr, aacraid, megaraid_sas, storvsc and ufs plus
  an assortment of changes including some year 2038 issues, a fix for a
  remove before detach issue in some drivers and a couple of other minor
  issues"

* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (141 commits)
  mpt3sas: fix inline markers on non inline function declarations
  sd: Clear PS bit before Mode Select.
  ibmvscsi: set max_lun to 32
  ibmvscsi: display default value for max_id, max_lun and max_channel.
  mptfusion: don't allow negative bytes in kbuf_alloc_2_sgl()
  scsi: pmcraid: replace struct timeval with ktime_get_real_seconds()
  mvumi: 64bit value for seconds_since1970
  be2iscsi: Fix bogus WARN_ON length check
  scsi_scan: don't dump trace when scsi_prep_async_scan() is called twice
  mpt3sas: Bump mpt3sas driver version to 09.102.00.00
  mpt3sas: Single driver module which supports both SAS 2.0 & SAS 3.0 HBAs
  mpt2sas, mpt3sas: Update the driver versions
  mpt3sas: setpci reset kernel oops fix
  mpt3sas: Added OEM Gen2 PnP ID branding names
  mpt3sas: Refcount fw_events and fix unsafe list usage
  mpt3sas: Refcount sas_device objects and fix unsafe list usage
  mpt3sas: sysfs attribute to report Backup Rail Monitor Status
  mpt3sas: Ported WarpDrive product SSS6200 support
  mpt3sas: fix for driver fails EEH, recovery from injected pci bus error
  mpt3sas: Manage MSI-X vectors according to HBA device type
  ...
2015-11-13 20:35:54 -08:00
Christoph Hellwig
64d513ac31 scsi: use host wide tags by default
This patch changes the !blk-mq path to the same defaults as the blk-mq
I/O path by always enabling block tagging, and always using host wide
tags.  We've had blk-mq available for a few releases so bugs with
this mode should have been ironed out, and this ensures we get better
coverage of over tagging setup over different configs.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Jens Axboe <axboe@kernel.dk>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: James Bottomley <JBottomley@Odin.com>
2015-11-09 17:11:57 -08:00
Tejun Heo
159b5bb464 Merge branch 'for-4.3-fixes' into for-4.4 2015-11-03 17:29:03 -05:00
Alexandra Yates
56e74338a5 ahci: add new Intel device IDs
Adding Intel codename Lewisburg platform device IDs for SATA.

Signed-off-by: Alexandra Yates <alexandra.yates@linux.intel.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2015-11-03 17:28:02 -05:00
Johannes Thumshirn
a40cf3f388 ahci: Add Marvell 88se91a2 device id
Add device id for Marvell 88se91a2

Signed-off-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Tejun Heo <tj@kernel.org>
2015-10-31 10:15:48 +09:00
Dan Williams
0a142b2692 ahci: cleanup ahci_host_activate_multi_irqs
With devm there is no need to explicitly free irqs on error.

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2015-10-31 10:04:34 +09:00
Dan Williams
899a63c3eb ahci: ahci_host_activate: kill IRQF_SHARED
MSI messages are per-device, so there will never be another "shared"
device in the interrupt chain.

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2015-10-31 10:04:34 +09:00
Tang Yuantian
640847298e ahci: qoriq: Disable NCQ on ls2080a SoC
NCQ feature can't be used due to the erratum A-008473.
This patch disables NCQ as a workaround.

Signed-off-by: Tang Yuantian <Yuantian.Tang@freescale.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2015-10-31 09:52:15 +09:00
Tang Yuantian
d19f9aaf01 ahci: qoriq: Rename LS2085A SoC support code to LS2080A
Freescale is renaming the LS2085A SoC to LS2080A.
This patch addresses the same.

Signed-off-by: Tang Yuantian <Yuantian.Tang@freescale.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2015-10-31 09:52:15 +09:00
Vinayak Kale
5f8e7f17f6 libata: enable LBA flag in taskfile for ata_scsi_pass_thru()
Enable LBA in taskfile flags for ata_scsi_pass_thru()

Signed-off-by: Vinayak Kale <vinayak.kale@seagate.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2015-10-27 16:48:01 +09:00
Vinayak Kale
ee7fb331c3 libata: add support for NCQ commands for SG interface
This patch is needed to make NCQ commands with FPDMA protocol value
(eg READ/WRITE FPDMA) work over SCSI Generic (SG) interface.

Signed-off-by: Vinayak Kale <vinayak.kale@seagate.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2015-10-27 15:09:01 +09:00
Arnd Bergmann
eb351031a1 ahci: qoriq: Fix a compiling warning
kbuild test robot reports the warnings:
drivers/ata/ahci_qoriq.c: In function 'ahci_qoriq_hardreset':
>> include/asm-generic/io.h:163:2: warning: 'px_is' may be used
>> uninitialized in this function [-Wuninitialized]
drivers/ata/ahci_qoriq.c:70:14: note: 'px_is' was declared here
>> include/asm-generic/io.h:163:2: warning: 'px_cmd' may be used
>> uninitialized in this function [-Wuninitialized]
drivers/ata/ahci_qoriq.c:70:6: note: 'px_cmd' was declared here

This patch fixed it by introducing a local variable.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Tang Yuantian <Yuantian.Tang@freescale.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2015-10-15 12:03:00 -04:00
LABBE Corentin
3a53b3bcc7 pata_it821x: use "const char *" for string literals
Some string literals are pointed to by "char *".  This patch fixes
that.

tj: Updated patch title and description.

Signed-off-by: LABBE Corentin <clabbe.montjoie@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2015-10-15 10:58:53 -04:00
Christoph Hellwig
2aa8f5d63d libata: only call ->done once all per-tag ressources are released
When calling ->done before releasing resources we could run into a
race where the SCSI midlayer sends another command and races with
the resources beeing manipulated.  For libata this can't currently
happen as synchronization happens at a higher level, but I'd still
like to fix it to future proof libata and to avoid copy & paste
into SCSI drivers where this pattern has led to reproducible crashes.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Tejun Heo <tj@kernel.org>
2015-10-12 13:23:13 -04:00
Christoph Hellwig
25c7ce7f7b libata: cleanup ata_scsi_qc_complete
Remove an incorrect comment and untangle an if statement in
ata_scsi_qc_complete.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Tejun Heo <tj@kernel.org>
2015-10-04 13:37:58 -04:00
Manuel Lauss
8a3e33cf92 ata: ahci: find eSATA ports and flag them as removable
If the AHCI ports' HPCP or ESP bits are set, the port
should be considered external (e.g. eSATA) and is marked
as removable.  Userspace tools like udisks then treat it
like an usb drive.

With this patch applied, when I plug a drive into the esata port,
KDE pops up a window asking what to do with the drives(s), just
like it does for any random USB stick.

Removability is indicated to the upper layers by way of the
SCSI RMB bit, as I haven't found another way to signal
userspace to treat a sata disk like any usb stick.

Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2015-09-30 17:37:55 -04:00
Andrzej Hajda
a73f22f981 libata: samsung_cf: fix handling platform_get_irq result
The function can return negative value.

The problem has been detected using proposed semantic patch
scripts/coccinelle/tests/assign_signed_to_unsigned.cocci [1].

[1]: http://permalink.gmane.org/gmane.linux.kernel/2046107

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2015-09-25 11:50:15 -04:00