Commit Graph

826113 Commits

Author SHA1 Message Date
Oded Gabbay
887f7d38e4 habanalabs: set DMA0 completion to SOB 1007
This patch fix a bug where DMA channel 0 completion address wasn't
initialized by the driver.

The patch sets the address to Sync Object no. 1007

Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-02-28 13:04:59 +01:00
Oded Gabbay
6765fda0f4 habanalabs: fix validation of WREG32 to DMA completion
This patch fix a bug in the validation of WREG32 in DMA queues. The
validation was too strict. It allowed the user to set the completion
address only for DMA channel 1.

The fix allows the user to set the completion address for all 5 DMA
channels.

Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-02-28 13:04:59 +01:00
Oded Gabbay
1e7c1ec14b habanalabs: fix mmu cache registers init
This patch fix an incorrect initialization of the MMU cache registers. The
shift operation was done in the wrong direction.

Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-02-28 13:04:59 +01:00
Oded Gabbay
a28ce422a6 habanalabs: disable CPU access on timeouts
This patch provides a workaround for a bug in the F/W where the response
time for a request from KMD may take more then 100ms. This could cause the
queue between KMD and the F/W to get out of sync.

The WA is to:
1. Increase the timeout of ALL requests to 1s.
2. In case a request isn't answered in time, mark the state as
"cpu_disabled" and prevent sending further requests from KMD to the F/W.
This will eventually lead to a heartbeat failure and hard reset of the
device.

Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-02-28 13:04:59 +01:00
Omer Shpigelman
27ca384cb7 habanalabs: add MMU DRAM default page mapping
This patch provides a workaround for a H/W bug in Goya, where access to
RAZWI from TPC can cause PCI completion timeout.

The WA is to use the device MMU to map any unmapped DRAM memory to a
default page in the DRAM. That way, the TPC will never reach RAZWI upon
accessing a bad address in the DRAM.

When a DRAM page is mapped by the user, its default mapping is
overwritten. Once that page is unmapped, the MMU driver will map that page
to the default page.

To help debugging, the driver will set the default page area to 0x99 on
device initialization.

Signed-off-by: Omer Shpigelman <oshpigelman@habana.ai>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-02-28 13:04:59 +01:00
Tomer Tayar
60b7dcca45 habanalabs: Dissociate RAZWI info from event types
This patch provides a workaround for a H/W bug in the RAZWI logger in
Goya. The logger doesn't recognize the initiator correctly and as a
result, accesses from one initiator are reported that were coming from a
different initiator.

The WA is to print the error information from the event entries we receive
without looking at the RAZWI logger at all.

Signed-off-by: Tomer Tayar <ttayar@habana.ai>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-02-28 13:04:59 +01:00
Greg Kroah-Hartman
f699f9f9ac mei-hdcp driver
mei driver for the me hdcp client, for use by drm/i915.
 
 Including the following prep work:
 - whitelist hdcp client in mei bus
 - merge to include char-misc-next
 - drm/i915 side of the mei_hdcp/i915 component interface
 - component prep work (including one patch touching i915&snd-hda)
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Merge tag 'topic/mei-hdcp-2019-02-26' of git://anongit.freedesktop.org/drm/drm-intel into char-misc-next

Daniel writes:

mei-hdcp driver

mei driver for the me hdcp client, for use by drm/i915.

Including the following prep work:
- whitelist hdcp client in mei bus
- merge to include char-misc-next
- drm/i915 side of the mei_hdcp/i915 component interface
- component prep work (including one patch touching i915&snd-hda)

* tag 'topic/mei-hdcp-2019-02-26' of git://anongit.freedesktop.org/drm/drm-intel: (23 commits)
  misc/mei/hdcp: Component framework for I915 Interface
  misc/mei/hdcp: Closing wired HDCP2.2 Tx Session
  misc/mei/hdcp: Enabling the HDCP authentication
  misc/mei/hdcp: Verify M_prime
  misc/mei/hdcp: Repeater topology verification and ack
  misc/mei/hdcp: Prepare Session Key
  misc/mei/hdcp: Verify L_prime
  misc/mei/hdcp: Initiate Locality check
  misc/mei/hdcp: Store the HDCP Pairing info
  misc/mei/hdcp: Verify H_prime
  misc/mei/hdcp: Verify Receiver Cert and prepare km
  misc/mei/hdcp: Initiate Wired HDCP2.2 Tx Session
  misc/mei/hdcp: Define ME FW interface for HDCP2.2
  misc/mei/hdcp: Client driver for HDCP application
  mei: bus: whitelist hdcp client
  drm/audio: declaration of struct device
  drm: helper functions for hdcp2 seq_num to from u32
  drm/i915: MEI interface definition
  drm/i915: header for i915 - MEI_HDCP interface
  drm/i915: enum port definition is moved into i915_drm.h
  ...
2019-02-28 12:55:40 +01:00
Kirill A. Shutemov
6f913de323 x86/boot/compressed/64: Do not read legacy ROM on EFI system
EFI systems do not necessarily provide a legacy ROM. If the ROM is missing
the memory is not mapped at all.

Trying to dereference values in the legacy ROM area leads to a crash on
Macbook Pro.

Only look for values in the legacy ROM area for non-EFI system.

Fixes: 3548e131ec ("x86/boot/compressed/64: Find a place for 32-bit trampoline")
Reported-by: Pitam Mitra <pitamm@gmail.com>
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Bockjoo Kim <bockjoo@phys.ufl.edu>
Cc: bp@alien8.de
Cc: hpa@zytor.com
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/20190219075224.35058-1-kirill.shutemov@linux.intel.com
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=202351
2019-02-28 12:25:05 +01:00
Ulf Hansson
4d3d534e9f Merge branch 'fixes' into next 2019-02-28 12:19:51 +01:00
BOUGH CHEN
e30be063d6 mmc: sdhci-esdhc-imx: correct the fix of ERR004536
Commit 18094430d6 ("mmc: sdhci-esdhc-imx: add ADMA Length
Mismatch errata fix") involve the fix of ERR004536, but the
fix is incorrect. Double confirm with IC, need to clear the
bit 7 of register 0x6c rather than set this bit 7.
Here is the definition of bit 7 of 0x6c:
    0: enable the new IC fix for ERR004536
    1: do not use the IC fix, keep the same as before

Find this issue on i.MX845s-evk board when enable CMDQ, and
let system in heavy loading.

root@imx8mmevk:~# dd if=/dev/mmcblk2 of=/dev/null bs=1M &
root@imx8mmevk:~# memtester 1000M > /dev/zero &
root@imx8mmevk:~# [  139.897220] mmc2: cqhci: timeout for tag 16
[  139.901417] mmc2: cqhci: ============ CQHCI REGISTER DUMP ===========
[  139.907862] mmc2: cqhci: Caps:      0x0000310a | Version:  0x00000510
[  139.914311] mmc2: cqhci: Config:    0x00001001 | Control:  0x00000000
[  139.920753] mmc2: cqhci: Int stat:  0x00000000 | Int enab: 0x00000006
[  139.927193] mmc2: cqhci: Int sig:   0x00000006 | Int Coal: 0x00000000
[  139.933634] mmc2: cqhci: TDL base:  0x7809c000 | TDL up32: 0x00000000
[  139.940073] mmc2: cqhci: Doorbell:  0x00030000 | TCN:      0x00000000
[  139.946518] mmc2: cqhci: Dev queue: 0x00010000 | Dev Pend: 0x00010000
[  139.952967] mmc2: cqhci: Task clr:  0x00000000 | SSC1:     0x00011000
[  139.959411] mmc2: cqhci: SSC2:      0x00000001 | DCMD rsp: 0x00000000
[  139.965857] mmc2: cqhci: RED mask:  0xfdf9a080 | TERRI:    0x00000000
[  139.972308] mmc2: cqhci: Resp idx:  0x0000002e | Resp arg: 0x00000900
[  139.978761] mmc2: sdhci: ============ SDHCI REGISTER DUMP ===========
[  139.985214] mmc2: sdhci: Sys addr:  0xb2c19000 | Version:  0x00000002
[  139.991669] mmc2: sdhci: Blk size:  0x00000200 | Blk cnt:  0x00000400
[  139.998127] mmc2: sdhci: Argument:  0x40110400 | Trn mode: 0x00000033
[  140.004618] mmc2: sdhci: Present:   0x01088a8f | Host ctl: 0x00000030
[  140.011113] mmc2: sdhci: Power:     0x00000002 | Blk gap:  0x00000080
[  140.017583] mmc2: sdhci: Wake-up:   0x00000008 | Clock:    0x0000000f
[  140.024039] mmc2: sdhci: Timeout:   0x0000008f | Int stat: 0x00000000
[  140.030497] mmc2: sdhci: Int enab:  0x107f4000 | Sig enab: 0x107f4000
[  140.036972] mmc2: sdhci: AC12 err:  0x00000000 | Slot int: 0x00000502
[  140.043426] mmc2: sdhci: Caps:      0x07eb0000 | Caps_1:   0x8000b407
[  140.049867] mmc2: sdhci: Cmd:       0x00002c1a | Max curr: 0x00ffffff
[  140.056314] mmc2: sdhci: Resp[0]:   0x00000900 | Resp[1]:  0xffffffff
[  140.062755] mmc2: sdhci: Resp[2]:   0x328f5903 | Resp[3]:  0x00d00f00
[  140.069195] mmc2: sdhci: Host ctl2: 0x00000008
[  140.073640] mmc2: sdhci: ADMA Err:  0x00000007 | ADMA Ptr: 0x7809c108
[  140.080079] mmc2: sdhci: ============================================
[  140.086662] mmc2: running CQE recovery

Fixes: 18094430d6 ("mmc: sdhci-esdhc-imx: add ADMA Length Mismatch errata fix")
Signed-off-by: Haibo Chen <haibo.chen@nxp.com>
Cc: stable@vger.kernel.org
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2019-02-28 12:18:31 +01:00
Daniel Borkmann
ce02ef06fc x86, retpolines: Raise limit for generating indirect calls from switch-case
From networking side, there are numerous attempts to get rid of indirect
calls in fast-path wherever feasible in order to avoid the cost of
retpolines, for example, just to name a few:

  * 283c16a2df ("indirect call wrappers: helpers to speed-up indirect calls of builtin")
  * aaa5d90b39 ("net: use indirect call wrappers at GRO network layer")
  * 028e0a4766 ("net: use indirect call wrappers at GRO transport layer")
  * 356da6d0cd ("dma-mapping: bypass indirect calls for dma-direct")
  * 09772d92cd ("bpf: avoid retpoline for lookup/update/delete calls on maps")
  * 10870dd89e ("netfilter: nf_tables: add direct calls for all builtin expressions")
  [...]

Recent work on XDP from Björn and Magnus additionally found that manually
transforming the XDP return code switch statement with more than 5 cases
into if-else combination would result in a considerable speedup in XDP
layer due to avoidance of indirect calls in CONFIG_RETPOLINE enabled
builds. On i40e driver with XDP prog attached, a 20-26% speedup has been
observed [0]. Aside from XDP, there are many other places later in the
networking stack's critical path with similar switch-case
processing. Rather than fixing every XDP-enabled driver and locations in
stack by hand, it would be good to instead raise the limit where gcc would
emit expensive indirect calls from the switch under retpolines and stick
with the default as-is in case of !retpoline configured kernels. This would
also have the advantage that for archs where this is not necessary, we let
compiler select the underlying target optimization for these constructs and
avoid potential slow-downs by if-else hand-rewrite.

In case of gcc, this setting is controlled by case-values-threshold which
has an architecture global default that selects 4 or 5 (latter if target
does not have a case insn that compares the bounds) where some arch back
ends like arm64 or s390 override it with their own target hooks, for
example, in gcc commit db7a90aa0de5 ("S/390: Disable prediction of indirect
branches") the threshold pretty much disables jump tables by limit of 20
under retpoline builds.  Comparing gcc's and clang's default code
generation on x86-64 under O2 level with retpoline build results in the
following outcome for 5 switch cases:

* gcc with -mindirect-branch=thunk-inline -mindirect-branch-register:

  # gdb -batch -ex 'disassemble dispatch' ./c-switch
  Dump of assembler code for function dispatch:
   0x0000000000400be0 <+0>:     cmp    $0x4,%edi
   0x0000000000400be3 <+3>:     ja     0x400c35 <dispatch+85>
   0x0000000000400be5 <+5>:     lea    0x915f8(%rip),%rdx        # 0x4921e4
   0x0000000000400bec <+12>:    mov    %edi,%edi
   0x0000000000400bee <+14>:    movslq (%rdx,%rdi,4),%rax
   0x0000000000400bf2 <+18>:    add    %rdx,%rax
   0x0000000000400bf5 <+21>:    callq  0x400c01 <dispatch+33>
   0x0000000000400bfa <+26>:    pause
   0x0000000000400bfc <+28>:    lfence
   0x0000000000400bff <+31>:    jmp    0x400bfa <dispatch+26>
   0x0000000000400c01 <+33>:    mov    %rax,(%rsp)
   0x0000000000400c05 <+37>:    retq
   0x0000000000400c06 <+38>:    nopw   %cs:0x0(%rax,%rax,1)
   0x0000000000400c10 <+48>:    jmpq   0x400c90 <fn_3>
   0x0000000000400c15 <+53>:    nopl   (%rax)
   0x0000000000400c18 <+56>:    jmpq   0x400c70 <fn_2>
   0x0000000000400c1d <+61>:    nopl   (%rax)
   0x0000000000400c20 <+64>:    jmpq   0x400c50 <fn_1>
   0x0000000000400c25 <+69>:    nopl   (%rax)
   0x0000000000400c28 <+72>:    jmpq   0x400c40 <fn_0>
   0x0000000000400c2d <+77>:    nopl   (%rax)
   0x0000000000400c30 <+80>:    jmpq   0x400cb0 <fn_4>
   0x0000000000400c35 <+85>:    push   %rax
   0x0000000000400c36 <+86>:    callq  0x40dd80 <abort>
  End of assembler dump.

* clang with -mretpoline emitting search tree:

  # gdb -batch -ex 'disassemble dispatch' ./c-switch
  Dump of assembler code for function dispatch:
   0x0000000000400b30 <+0>:     cmp    $0x1,%edi
   0x0000000000400b33 <+3>:     jle    0x400b44 <dispatch+20>
   0x0000000000400b35 <+5>:     cmp    $0x2,%edi
   0x0000000000400b38 <+8>:     je     0x400b4d <dispatch+29>
   0x0000000000400b3a <+10>:    cmp    $0x3,%edi
   0x0000000000400b3d <+13>:    jne    0x400b52 <dispatch+34>
   0x0000000000400b3f <+15>:    jmpq   0x400c50 <fn_3>
   0x0000000000400b44 <+20>:    test   %edi,%edi
   0x0000000000400b46 <+22>:    jne    0x400b5c <dispatch+44>
   0x0000000000400b48 <+24>:    jmpq   0x400c20 <fn_0>
   0x0000000000400b4d <+29>:    jmpq   0x400c40 <fn_2>
   0x0000000000400b52 <+34>:    cmp    $0x4,%edi
   0x0000000000400b55 <+37>:    jne    0x400b66 <dispatch+54>
   0x0000000000400b57 <+39>:    jmpq   0x400c60 <fn_4>
   0x0000000000400b5c <+44>:    cmp    $0x1,%edi
   0x0000000000400b5f <+47>:    jne    0x400b66 <dispatch+54>
   0x0000000000400b61 <+49>:    jmpq   0x400c30 <fn_1>
   0x0000000000400b66 <+54>:    push   %rax
   0x0000000000400b67 <+55>:    callq  0x40dd20 <abort>
  End of assembler dump.

  For sake of comparison, clang without -mretpoline:

  # gdb -batch -ex 'disassemble dispatch' ./c-switch
  Dump of assembler code for function dispatch:
   0x0000000000400b30 <+0>:	cmp    $0x4,%edi
   0x0000000000400b33 <+3>:	ja     0x400b57 <dispatch+39>
   0x0000000000400b35 <+5>:	mov    %edi,%eax
   0x0000000000400b37 <+7>:	jmpq   *0x492148(,%rax,8)
   0x0000000000400b3e <+14>:	jmpq   0x400bf0 <fn_0>
   0x0000000000400b43 <+19>:	jmpq   0x400c30 <fn_4>
   0x0000000000400b48 <+24>:	jmpq   0x400c10 <fn_2>
   0x0000000000400b4d <+29>:	jmpq   0x400c20 <fn_3>
   0x0000000000400b52 <+34>:	jmpq   0x400c00 <fn_1>
   0x0000000000400b57 <+39>:	push   %rax
   0x0000000000400b58 <+40>:	callq  0x40dcf0 <abort>
  End of assembler dump.

Raising the cases to a high number (e.g. 100) will still result in similar
code generation pattern with clang and gcc as above, in other words clang
generally turns off jump table emission by having an extra expansion pass
under retpoline build to turn indirectbr instructions from their IR into
switch instructions as a built-in -mno-jump-table lowering of a switch (in
this case, even if IR input already contained an indirect branch).

For gcc, adding --param=case-values-threshold=20 as in similar fashion as
s390 in order to raise the limit for x86 retpoline enabled builds results
in a small vmlinux size increase of only 0.13% (before=18,027,528
after=18,051,192). For clang this option is ignored due to i) not being
needed as mentioned and ii) not having above cmdline
parameter. Non-retpoline-enabled builds with gcc continue to use the
default case-values-threshold setting, so nothing changes here.

[0] https://lore.kernel.org/netdev/20190129095754.9390-1-bjorn.topel@gmail.com/
    and "The Path to DPDK Speeds for AF_XDP", LPC 2018, networking track:
  - http://vger.kernel.org/lpc_net2018_talks/lpc18_pres_af_xdp_perf-v3.pdf
  - http://vger.kernel.org/lpc_net2018_talks/lpc18_paper_af_xdp_perf-v2.pdf

Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Jesper Dangaard Brouer <brouer@redhat.com>
Acked-by: Björn Töpel <bjorn.topel@intel.com>
Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: netdev@vger.kernel.org
Cc: David S. Miller <davem@davemloft.net>
Cc: Magnus Karlsson <magnus.karlsson@intel.com>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Link: https://lkml.kernel.org/r/20190221221941.29358-1-daniel@iogearbox.net
2019-02-28 12:10:31 +01:00
Geert Uytterhoeven
b607066442 lib/vsprintf: Remove %pCr remnant in comment
Support for "%pCr" was removed, but a reference in a comment was
forgotten.

Fixes: 666902e42f ("lib/vsprintf: Remove atomic-unsafe support for %pCr")
Link: http://lkml.kernel.org/r/20190228105315.744-1-geert+renesas@glider.be
To: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Petr Mladek <pmladek@suse.com>
2019-02-28 12:04:56 +01:00
Lan Tianyu
9cd05ad291 x86/hyper-v: Fix definition of HV_MAX_FLUSH_REP_COUNT
The max flush rep count of HvFlushGuestPhysicalAddressList hypercall is
equal with how many entries of union hv_gpa_page_range can be populated
into the input parameter page.

The code lacks parenthesis around PAGE_SIZE - 2 * sizeof(u64) which results
in bogus computations. Add them.

Fixes: cc4edae4b9 ("x86/hyper-v: Add HvFlushGuestAddressList hypercall support")
Signed-off-by: Lan Tianyu <Tianyu.Lan@microsoft.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: kys@microsoft.com
Cc: haiyangz@microsoft.com
Cc: sthemmin@microsoft.com
Cc: sashal@kernel.org
Cc: bp@alien8.de
Cc: hpa@zytor.com
Cc: gregkh@linuxfoundation.org
Cc: devel@linuxdriverproject.org
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/20190225143114.5149-1-Tianyu.Lan@microsoft.com
2019-02-28 11:58:29 +01:00
Sebastian Andrzej Siewior
ad01423aed kthread: Do not use TIMER_IRQSAFE
The TIMER_IRQSAFE usage was introduced in commit 22597dc3d9 ("kthread:
initial support for delayed kthread work") which modelled the delayed
kthread code after workqueue's code. The workqueue code requires the flag
TIMER_IRQSAFE for synchronisation purpose. This is not true for kthread's
delay timer since all operations occur under a lock.

Remove TIMER_IRQSAFE from the timer initialisation and use timer_setup()
for initialisation purpose which is the official function.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Petr Mladek <pmladek@suse.com>
Link: https://lkml.kernel.org/r/20190212162554.19779-2-bigeasy@linutronix.de
2019-02-28 11:18:38 +01:00
Julia Cartwright
fe99a4f4d6 kthread: Convert worker lock to raw spinlock
In order to enable the queuing of kthread work items from hardirq context
even when PREEMPT_RT_FULL is enabled, convert the worker spin_lock to a
raw_spin_lock.

This is only acceptable to do because the work performed under the lock is
well-bounded and minimal.

Reported-by: Steffen Trumtrar <s.trumtrar@pengutronix.de>
Reported-by: Tim Sander <tim@krieglstein.org>
Signed-off-by: Julia Cartwright <julia@ni.com>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Steffen Trumtrar <s.trumtrar@pengutronix.de>
Reviewed-by: Petr Mladek <pmladek@suse.com>
Cc: Guenter Roeck <linux@roeck-us.net>
Link: https://lkml.kernel.org/r/20190212162554.19779-1-bigeasy@linutronix.de
2019-02-28 11:18:38 +01:00
Lan Tianyu
32d5860a9e MAINTAINERS: Add Hyper-V IOMMU driver into Hyper-V CORE AND DRIVERS scope
This patch is to add Hyper-V IOMMU driver file into Hyper-V CORE and
DRIVERS scope.

Reviewed-by: Michael Kelley <mikelley@microsoft.com>
Signed-off-by: Lan Tianyu <Tianyu.Lan@microsoft.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
2019-02-28 11:12:16 +01:00
Lan Tianyu
29217a4746 iommu/hyper-v: Add Hyper-V stub IOMMU driver
On the bare metal, enabling X2APIC mode requires interrupt remapping
function which helps to deliver irq to cpu with 32-bit APIC ID.
Hyper-V doesn't provide interrupt remapping function so far and Hyper-V
MSI protocol already supports to deliver interrupt to the CPU whose
virtual processor index is more than 255. IO-APIC interrupt still has
8-bit APIC ID limitation.

This patch is to add Hyper-V stub IOMMU driver in order to enable
X2APIC mode successfully in Hyper-V Linux guest. The driver returns X2APIC
interrupt remapping capability when X2APIC mode is available. Otherwise,
it creates a Hyper-V irq domain to limit IO-APIC interrupts' affinity
and make sure cpus assigned with IO-APIC interrupt have 8-bit APIC ID.

Define 24 IO-APIC remapping entries because Hyper-V only expose one
single IO-APIC and one IO-APIC has 24 pins according IO-APIC spec(
https://pdos.csail.mit.edu/6.828/2016/readings/ia32/ioapic.pdf).

Reviewed-by: Michael Kelley <mikelley@microsoft.com>
Signed-off-by: Lan Tianyu <Tianyu.Lan@microsoft.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
2019-02-28 11:12:16 +01:00
Lan Tianyu
84fdfafab8 x86/Hyper-V: Set x2apic destination mode to physical when x2apic is available
Hyper-V doesn't provide irq remapping for IO-APIC. To enable x2apic,
set x2apic destination mode to physcial mode when x2apic is available
and Hyper-V IOMMU driver makes sure cpus assigned with IO-APIC irqs have
8-bit APIC id.

Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
Signed-off-by: Lan Tianyu <Tianyu.Lan@microsoft.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
2019-02-28 11:12:16 +01:00
Kuppuswamy Sathyanarayanan
fff42928ad PCI/ATS: Add inline to pci_prg_resp_pasid_required()
Fix unused function warning when compiled with CONFIG_PCI_PASID
disabled.

Fixes: e5567f5f67 ("PCI/ATS: Add pci_prg_resp_pasid_required() interface.")
Signed-off-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
2019-02-28 11:09:29 +01:00
Kalle Valo
501faf7102 Merge ath-next from git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/ath.git
ath.git patches for 5.1. Major changes:

ath10k

* more preparation for SDIO support

wil6210

* support up to 20 stations in AP mode
2019-02-28 11:50:40 +02:00
Andrey Smirnov
d82ca49f3e dt-bindings: imx6q-pcie: Add "pcie_aux" clock for imx8mq
Add a binding for an extra clock required on i.MX8MQ.

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Lucas Stach <l.stach@pengutronix.de>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Fabio Estevam <fabio.estevam@nxp.com>
Cc: Chris Healy <cphealy@gmail.com>
Cc: Lucas Stach <l.stach@pengutronix.de>
Cc: Leonard Crestez <leonard.crestez@nxp.com>
Cc: "A.s. Dong" <aisheng.dong@nxp.com>
Cc: Richard Zhu <hongxing.zhu@nxp.com>
Cc: linux-imx@nxp.com
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
Cc: linux-pci@vger.kernel.org
Cc: Rob Herring <robh@kernel.org>
Cc: devicetree@vger.kernel.org
2019-02-28 09:46:22 +00:00
Bjorn Andersson
02b485e31d PCI: qcom: Don't deassert reset GPIO during probe
Acquiring the reset GPIO low means that reset is being deasserted, this
is followed almost immediately with qcom_pcie_host_init() asserting it,
initializing it and then finally deasserting it again, for the link to
come up.

Some PCIe devices requires a minimum time between the initial deassert
and subsequent reset cycles. In a platform that boots with the reset
GPIO asserted this requirement is being violated by this deassert/assert
pulse.

Acquire the reset GPIO high to prevent this situation by matching the
state to the subsequent asserted state.

Fixes: 82a823833f ("PCI: qcom: Add Qualcomm PCIe controller driver")
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
[lorenzo.pieralisi@arm.com: updated commit log]
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Acked-by: Stanimir Varbanov <svarbanov@mm-sol.com>
Cc: stable@vger.kernel.org
2019-02-28 09:46:10 +00:00
Alexei Avshalom Lazar
de77a53c2d wil6210: check null pointer in _wil_cfg80211_merge_extra_ies
ies1 or ies2 might be null when code inside
_wil_cfg80211_merge_extra_ies access them.
Add explicit check for null and make sure ies1/ies2 are not
accessed in such a case.

spos might be null and be accessed inside
_wil_cfg80211_merge_extra_ies.
Add explicit check for null in the while condition statement
and make sure spos is not accessed in such a case.

Signed-off-by: Alexei Avshalom Lazar <ailizaro@codeaurora.org>
Signed-off-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2019-02-28 11:25:09 +02:00
Maya Erez
979c9d8d01 wil6210: ignore HALP ICR if already handled
HALP ICR is set as long as the FW should stay awake.
To prevent its multiple handling the driver masks this IRQ bit.
However, if there is a different MISC ICR before the driver clears
this bit, there is a risk of race condition between HALP mask and
unmask. This race leads to HALP timeout, in case it is mistakenly
masked.
Add an atomic flag to indicate if HALP ICR should be handled.

Signed-off-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2019-02-28 11:24:59 +02:00
Dedy Lansky
a380eb5736 wil6210: fix invalid sta statistics update
Upon status ring handling, in case there are both unicast and
multicast (cid == max) status messages to handle, wrong sta statistics
might get updated.
Fix this by setting stats to NULL upon invalid cid
(e.g. == max_assoc_sta).

Signed-off-by: Dedy Lansky <dlansky@codeaurora.org>
Signed-off-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2019-02-28 11:24:50 +02:00
Ahmad Masri
6d1ba32c80 wil6210: accessing 802.3 addresses via utility functions
Rearrange the code by having functions to access 802.3 header
members, source and destination addresses.

Signed-off-by: Ahmad Masri <amasri@codeaurora.org>
Signed-off-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2019-02-28 11:24:39 +02:00
Ahmad Masri
bf0353a674 wil6210: support up to 20 stations in AP mode
New FW added support for upto 20 clients in AP mode. Change the driver
to support this as well. FW reports it's max supported associations in
WMI_READY_EVENT. Some WMI commands/events use cidxtid field which is
limited to 16 cids. Use new cid/tid fields instead.

For Rx packets cid from rx descriptor is limited to 3 bits (0..7),
to find the real cid, compare transmitter address with the stored
stations mac address in the driver sta array.

EDMA FW still supports 8 stations. Extending the support to 20
stations will come later.

Signed-off-by: Ahmad Masri <amasri@codeaurora.org>
Signed-off-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2019-02-28 11:24:29 +02:00
Dedy Lansky
0439a5e035 wil6210: add option to drop Tx packets when Tx ring is full
In AP mode with multiple clients, driver stops net queue
(netif_tx_stop_queue) upon first ring (serving specific client)
becoming full. This can have negative effect on transmission to
other clients which may still have room in their corresponding rings.

Implement new policy in which stop/wake net queue are not used. In
case there is no room in the ring for a transmitted packet, drop the
packet.

New policy can be helpful to debug performance issues, to guarantee
maximum utilization of net queues.
New policy is disabled by default and can be enabled by debugfs:
echo 1 > drop_if_ring_full

Signed-off-by: Dedy Lansky <dlansky@codeaurora.org>
Signed-off-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2019-02-28 11:24:19 +02:00
Maya Erez
387f3794b8 wil6210: remove rtap_include_phy_info module param
Due to a HW issue in PHY info collection rtap_include_phy_info is not
in use, hence can be removed.

Signed-off-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2019-02-28 11:24:09 +02:00
Julia Lawall
c7c0d8df0b tee: optee: add missing of_node_put after of_device_is_available
Add an of_node_put when a tested device node is not available.

The semantic patch that fixes this problem is as follows
(http://coccinelle.lip6.fr):

// <smpl>
@@
identifier f;
local idexpression e;
expression x;
@@

e = f(...);
... when != of_node_put(e)
    when != x = e
    when != e = x
    when any
if (<+...of_device_is_available(e)...+>) {
  ... when != of_node_put(e)
(
  return e;
|
+ of_node_put(e);
  return ...;
)
}
// </smpl>

Fixes: db878f76b9 ("tee: optee: take DT status property into account")
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
2019-02-28 10:23:04 +01:00
Surabhi Vishnoi
f40a307eb9 ath10k: Fill rx duration for each peer in fw_stats for WCN3990
Currently, rx_duration for each peer is not getting populated in
fw_stats debugfs entry for WCN3990.

WCN3990 firmware sends rx duration for each peer as part of
peer_extd_stats in WMI_UPDATE_STATS_EVENT. To enable peer_extd_stats,
firmware expects host to send fw_stats_req_mask with flag
WMI_TLV_PEER_STATS_EXTD set in WMI_REQUEST_STATS_CMD.

Send fw_stats_req_mask with flag WMI_TLV_PEER_STATS_EXTD set in
WMI_REQUEST_STATS_CMD and parse the peer_extd_stats in
WMI_UPDATE_STATS_EVENT to populate the rx_duration of each peer
in fw_stats debugfs entry.

Currently the driver handles 32-bit rx_duration, but the rx_duration
for WCN3990 can be upto 63 bit. The firmware sends rx_duration split
into two 32-bit fields, with the upper 32-bits being valid only if its
MSB is set. This change handles the 63-bit rx_duration obtained from
WCN3990 and maintain the backward compatibility.

To get the rx_duration of each connected peer :
cat /sys/kernel/debug/ieee80211/phyX/ath10k/fw_stats

Tested HW: WCN3990
Tested FW: WLAN.HL.3.1-00784-QCAHLSWMTPLZ-1

Signed-off-by: Surabhi Vishnoi <svishnoi@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2019-02-28 10:48:19 +02:00
Gustavo A. R. Silva
988bb4a193 i3c: master: dw-i3c-master: mark expected switch fall-through
In preparation to enabling -Wimplicit-fallthrough, mark switch
cases where we are expecting to fall through.

This patch fixes the following warning:

drivers/i3c/master/dw-i3c-master.c: In function ‘dw_i3c_master_bus_init’:
drivers/i3c/master/dw-i3c-master.c:603:6: warning: this statement may fall through [-Wimplicit-fallthrough=]
   if (ret)
      ^
drivers/i3c/master/dw-i3c-master.c:605:2: note: here
  case I3C_BUS_MODE_PURE:
  ^~~~

Warning level 3 was used: -Wimplicit-fallthrough=3

This patch is part of the ongoing efforts to enable
-Wimplicit-fallthrough.

Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Acked-by: Vitor Soares <vitor.soares@synopsys.com>
Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com>
2019-02-28 09:47:53 +01:00
Boris Brezillon
65907c5d1e MAINTAINERS: Add an IRC channel for the I3C subsystem
The #linux-i3c chan has been created on freenode to discuss I3C related
topics.

Signed-off-by: Boris Brezillon <bbrezillon@kernel.org>
2019-02-28 09:47:52 +01:00
Surabhi Vishnoi
d23c2cdaa0 ath10k: Fix the wrong calculation ht_idx and idx of rate table for tx_stats
ht_idx (ht rate index) and idx (rate table index) are calculated based on
mcs index. This mcs index used in the above calculation should be 0-9 for
getting the correct ht_idx and idx.

Currently the mcs index used for the above calculations is mcs index which
can be 0-31 (in case of HT), leading to incorrect rate index and ht index values.

Fix the issue by obtaining mcs value from the ratecode reported by firmware
and use it for calculating ht_idx and idx (rate-table index).

Tested HW: WCN3990
Tested FW: WLAN.HL.3.1-00784-QCAHLSWMTPLZ-1

Fixes: e88975ca37 ("ath10k: dump tx stats in rate table format")
Signed-off-by: Surabhi Vishnoi <svishnoi@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2019-02-28 10:46:26 +02:00
Surabhi Vishnoi
8e55fdaa8e ath10k: Fix the wrong updation of SGI in tx_stats debugfs
The SGI is updated wrongly in tx stats table in debugfs per sta
entry. To know whether the packets/bytes are sent with SHORT GI,
test whether the SGI bit(ATH10K_RATE_INFO_FLAGS_SGI_BIT) is set or
not in the txrate flags.

Tested HW: WCN3990
Tested FW: WLAN.HL.3.1-00784-QCAHLSWMTPLZ-1

Fixes: a904417fc8 ("ath10k: add extended per sta tx statistics support")
Signed-off-by: Surabhi Vishnoi <svishnoi@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2019-02-28 10:46:16 +02:00
Surabhi Vishnoi
ef9051c72a ath10k: Fix the wrong updation of BW in tx_stats debugfs entry
Currently, the bandwidth is updated wrongly in BW table in tx_stats
debugfs per sta as there is difference in number of bandwidth type
in mac80211 and driver stats table. This leads to bandwidth getting
updated at wrong index in bandwidth table in tx_stats.

Fix this index mismatch between mac80211 and driver stats table (BW table)
by making the number of bandwidth type in driver compatible with mac80211.

Tested HW: WCN3990
Tested FW: WLAN.HL.3.1-00784-QCAHLSWMTPLZ-1

Fixes: a904417fc8 ("ath10k: add extended per sta tx statistics support")
Signed-off-by: Surabhi Vishnoi <svishnoi@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2019-02-28 10:46:06 +02:00
Surabhi Vishnoi
3a08ac3e79 ath10k: Fix the incorrect updation of NSS data in tx stats
The NSS data is updated incorrectly in the tx stats as the array
indexing starts from zero.

Fix the incorrect updation of NSS data in tx_stats by taking into
consideration the array index starting from zero.

Tested HW: WCN3990
Tested FW: WLAN.HL.3.1-00784-QCAHLSWMTPLZ-1

Fixes: a904417fc8 ("ath10k: add extended per sta tx statistics support")
Signed-off-by: Surabhi Vishnoi <svishnoi@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2019-02-28 10:45:56 +02:00
YueHaibing
037e0c5df6 rtlwifi: rtl8192se: Remove set but not used variable 'seg_ptr'
Fixes gcc '-Wunused-but-set-variable' warning:

drivers/net/wireless/realtek/rtlwifi/rtl8192se/fw.c: In function '_rtl92s_firmware_downloadcode':
drivers/net/wireless/realtek/rtlwifi/rtl8192se/fw.c:139:17: warning:
 variable 'seg_ptr' set but not used [-Wunused-but-set-variable]

It's not used after commit 59ae1d127a ("networking: introduce and use
skb_put_data()")

Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2019-02-28 10:40:39 +02:00
YueHaibing
85c6ac33c8 rtlwifi: rtl8723ae: Remove set but not used variable 'bt_retry_cnt'
Fixes gcc '-Wunused-but-set-variable' warning:

drivers/net/wireless/realtek/rtlwifi/rtl8723ae/hal_btc.c: In function '_rtl8723e_dm_bt_coexist_2_ant':
drivers/net/wireless/realtek/rtlwifi/rtl8723ae/hal_btc.c:1408:5: warning:
 variable 'bt_retry_cnt' set but not used [-Wunused-but-set-variable]

It's never used and can be removed.

Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2019-02-28 10:39:46 +02:00
YueHaibing
f321505656 rtlwifi: rtl8723be: Remove set but not used variable 'b_last_is_cur_rdlstate'
Fixes gcc '-Wunused-but-set-variable' warning:

drivers/net/wireless/realtek/rtlwifi/rtl8723be/dm.c: In function 'rtl8723be_dm_check_edca_turbo':
drivers/net/wireless/realtek/rtlwifi/rtl8723be/dm.c:998:7: warning:
 variable 'b_last_is_cur_rdlstate' set but not used [-Wunused-but-set-variable]

It's never used and can be removed.

Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2019-02-28 10:39:20 +02:00
Wen Yang
34e022d8b7 mt76: fix a leaked reference by adding a missing of_node_put
The call to of_find_node_by_phandle returns a node pointer with refcount
incremented thus it must be explicitly decremented after the last
usage.

Detected by coccinelle with the following warnings:
./drivers/net/wireless/mediatek/mt76/eeprom.c:58:2-8: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 48, but without a corresponding object release within this function.
./drivers/net/wireless/mediatek/mt76/eeprom.c:61:2-8: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 48, but without a corresponding object release within this function.
./drivers/net/wireless/mediatek/mt76/eeprom.c:67:2-8: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 48, but without a corresponding object release within this function.
./drivers/net/wireless/mediatek/mt76/eeprom.c:70:2-8: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 48, but without a corresponding object release within this function.
./drivers/net/wireless/mediatek/mt76/eeprom.c:72:1-7: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 48, but without a corresponding object release within this function.

Signed-off-by: Wen Yang <wen.yang99@zte.com.cn>
Cc: Felix Fietkau <nbd@nbd.name>
Cc: Lorenzo Bianconi <lorenzo.bianconi83@gmail.com>
Cc: Kalle Valo <kvalo@codeaurora.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Matthias Brugger <matthias.bgg@gmail.com>
Cc: linux-wireless@vger.kernel.org
Cc: netdev@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-mediatek@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2019-02-28 10:38:44 +02:00
Larry Finger
52f8865712 rtlwifi: rtl8192com: Fix blank line problems
The following types of blank line problems are reported:

WARNING: Missing a blank line after declarations
CHECK: Please don't use multiple blank lines

There are no code changes.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2019-02-28 10:30:05 +02:00
Larry Finger
6d255202a2 rtlwifi: rtl8192cu: Fix problems with blank lines
The following problems were found:

WARNING: Missing a blank line after declarations
CHECK: Please don't use multiple blank lines
CHECK: Please use a blank line after function/struct/union/enum declarations

There are no code changes.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2019-02-28 10:30:04 +02:00
Larry Finger
2973af748d rtlwifi: rtl8192ce: Fix missing blank lines
The problems filed include the following:

WARNING: Missing a blank line after declarations
CHECK: Please don't use multiple blank lines

There are no code changes.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2019-02-28 10:30:03 +02:00
Larry Finger
b16abaafea rtlwifi: Fix all blank line irregularities in main code files
The types of problems fixed are as follows:

WARNING: Missing a blank line after declarations
CHECK: Please use a blank line after function/struct/union/enum declarations
CHECK: Please don't use multiple blank lines

There are no code changes.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2019-02-28 10:30:02 +02:00
Larry Finger
93665097ea rtlwifi: Fix blank line errors in main header files
The errors consist of multiple blank lines, and a missing blank line
after the declarations.

There are no code changes.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2019-02-28 10:30:01 +02:00
Larry Finger
1dc89bb93c rtlwifi: Fix alignment errors in wifi.h
The instances where statement continuations are improperly aligned have
been fixed.

There are no changes to generated code.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2019-02-28 10:30:00 +02:00
Larry Finger
d3da329c1d rtlwifi: Fix problems with block comments in wifi.h
Checkpatch.pl reports a number of problems with block comments.

These changes do not affect the generated code.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2019-02-28 10:30:00 +02:00
Larry Finger
6e5d904152 rtlwifi: Fix errors in spacing in wifi.h
Checkpatch.pl report problems in wifi.h where spaces are missing, as well
as extraneous spaces.

There are no changes in the generated code.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2019-02-28 10:29:59 +02:00
David Howells
c99c2171fc afs: Use fs_context to pass parameters over automount
Alter the AFS automounting code to create and modify an fs_context struct
when parameterising a new mount triggered by an AFS mountpoint rather than
constructing device name and option strings.

Also remove the cell=, vol= and rwpath options as they are then redundant.
The reason they existed is because the 'device name' may be derived
literally from a mountpoint object in the filesystem, so default cell and
parent-type information needed to be passed in by some other method from
the automount routines.  The vol= option didn't end up being used.

Signed-off-by: David Howells <dhowells@redhat.com>
cc: Eric W. Biederman <ebiederm@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2019-02-28 03:29:39 -05:00