Before we get all the chain (ie. mac80211, cfg80211, nl80211 and
userspace) changed to support net-detect, we can use this debugfs
entry for easy testing and as a proof of concept.
Signed-off-by: NLuciano Coelho <luciano.coelho@intel.com>
Signed-off-by: NEmmanuel Grumbach <emmanuel.grumbach@intel.com>

The net-detect feature will require a scan offload to be started in
the same way it is done now for scheduled scan.  Spin a new function
off of the sched_scan_start op code for reuse.  Additionally,
restructure the function a bit for more readability.
Signed-off-by: NLuciano Coelho <luciano.coelho@intel.com>
Signed-off-by: NEmmanuel Grumbach <emmanuel.grumbach@intel.com>

Instead of checking if we are associated when suspending with wowlan
enabled in the interface iterator, allow it to return an unassociated
vif and move the check to the main suspend function.  This will be
needed by netdetect, since it should also work when we are not
associated but the vif is active.
Signed-off-by: NLuciano Coelho <luciano.coelho@intel.com>
Signed-off-by: NEmmanuel Grumbach <emmanuel.grumbach@intel.com>

Take the WoWLAN handling code out of the main suspend function,
dividing it into three parts: get_config (which is used before the
firmware is switched), switch_to_d3 (which handles the rebooting of
the hardware with the D3 firmware) and config (which configures the D3
firmware for WoWLAN operation).  This is necessary to prepare for the
net-detect implementation, which will use only the switch_to_d3 part
of this flow.
Signed-off-by: NLuciano Coelho <luciano.coelho@intel.com>
Signed-off-by: NEmmanuel Grumbach <emmanuel.grumbach@intel.com>

We use ieee80211_iter_keys() which requires the rtnl to be held.  If
we don't lock the rtnl, like we do when we suspend during a d3 test,
we get the following splat:

 RTNL: assertion failed at net/mac80211/key.c (566)
 CPU: 1 PID: 26529 Comm: cat Tainted: G        W  O 3.10.29-dev #1
 Hardware name: Dell Inc. Latitude E6430/0CPWYR, BIOS A09 12/13/2012
  e7b15008 e7b15008 e68adc1c c168aa62 e68adc54 f91f20b6 f923700c f9236fd8
  00000236 00000000 ece23874 00000000 f94941e0 00000000 e43b8e48 e7b15008
  00000000 e8b69e78 e68adcc0 f9493ab9 e68adc68 00000000 e43b8e48 e7b15008
 Call Trace:
  [<c168aa62>] dump_stack+0x16/0x18
  [<f91f20b6>] ieee80211_iter_keys+0x166/0x170 [mac80211]
  [<f94941e0>] ? iwl_mvm_query_wakeup_reasons+0x5f0/0x5f0 [iwlmvm]
  [<f9493ab9>] iwl_mvm_setup_connection_keep.isra.5+0x99/0x1d0 [iwlmvm]
  [<f9165e28>] ? cfg80211_report_wowlan_wakeup+0x308/0x510 [cfg80211]
  [<f9493fe5>] iwl_mvm_query_wakeup_reasons+0x3f5/0x5f0 [iwlmvm]
  [<c116125a>] ? init_object+0x3a/0x70
  [<f8a5b8ee>] ? iwl_trans_pcie_d3_resume+0x1be/0x3a0 [iwlwifi]
  [<f94956da>] __iwl_mvm_resume+0x14a/0x180 [iwlmvm]
  [<f9495736>] iwl_mvm_d3_test_release+0x26/0xc0 [iwlmvm]
  [<c117a64d>] __fput+0xad/0x210
  [<c117a7bd>] ____fput+0xd/0x10
  [<c10601a1>] task_work_run+0x81/0xb0
  [<c1040fa5>] do_exit+0x255/0xac0
  [<c104e511>] ? dequeue_signal+0x31/0x1a0
  [<c1041888>] do_group_exit+0x38/0xa0
  [<c10a6cfb>] ? trace_hardirqs_on+0xb/0x10
  [<c1051c31>] get_signal_to_deliver+0x1e1/0x8e0
  [<c104bd52>] ? try_to_del_timer_sync+0x42/0x60
  [<c104bd70>] ? try_to_del_timer_sync+0x60/0x60
  [<c168dc82>] ? schedule_timeout+0x102/0x2a0
  [<c10011ba>] do_signal+0x3a/0x8e0
  [<c104b190>] ? __internal_add_timer+0xb0/0xb0
  [<c168de7a>] ? schedule_timeout_interruptible+0x1a/0x20
  [<c104ce39>] ? msleep_interruptible+0x39/0x40
  [<f94939a9>] ? iwl_mvm_d3_test_read+0x49/0x70 [iwlmvm]
  [<c11797fc>] ? vfs_read+0x8c/0x160
  [<c11243af>] ? SyS_fadvise64_64+0x15f/0x2b0
  [<f9493960>] ? iwl_mvm_wowlan_program_keys+0x4a0/0x4a0 [iwlmvm]
  [<c1179a57>] ? SyS_read+0x57/0xa0
  [<c1001acf>] do_notify_resume+0x6f/0xa0
  [<c1692500>] work_notifysig+0x29/0x31

Fix this by hold the rtnl lock when calling __iwl_mvm_resume() in the
d3 test wake up path.
Signed-off-by: NLuciano Coelho <luciano.coelho@intel.com>
Signed-off-by: NEmmanuel Grumbach <emmanuel.grumbach@intel.com>

mac80211 will never call rate_control_tx_status with a NULL
pointer for sta. Remove the superfluous check. This check
misled smatch.
Signed-off-by: NEmmanuel Grumbach <emmanuel.grumbach@intel.com>

The current TLC isn't optimized for low latency and some devices
have issues with MIMO. This kind of combo creates latency issues.
Allow to temporarily disable MIMO for tests in order to solve
the latency issues without the added complexity of MIMO.
Signed-off-by: NEyal Shapira <eyalx.shapira@intel.com>
Signed-off-by: NArik Nemtsov <arikx.nemtsov@intel.com>
Signed-off-by: NEmmanuel Grumbach <emmanuel.grumbach@intel.com>

iwl_poll_bit may return a strictly positive value when the
poll doesn't match on the first try.
This was caught when WoWLAN started failing upon resume
even if the poll_bit actually succeeded.

Also change a wrong print. If we reach the end of
iwl_pcie_prepare_card_hw, it means that we couldn't
get the devices.
Reviewed-by: NJohannes Berg <johannes.berg@intel.com>
Reviewed-by: NLuciano Coelho <luciano.coelho@intel.com>
Signed-off-by: NEmmanuel Grumbach <emmanuel.grumbach@intel.com>

This reverts commit aa11bbf3.
This commit was causing connection issues and is not needed
if IWL_MVM_RS_RSSI_BASED_INIT_RATE is set to false by default.

Regardless of the issues mentioned above, this patch added the
following WARNING:

WARNING: CPU: 0 PID: 3946 at drivers/net/wireless/iwlwifi/mvm/tx.c:190 iwl_mvm_set_tx_params+0x60a/0x6f0 [iwlmvm]()
Got an HT rate for a non data frame 0x8
CPU: 0 PID: 3946 Comm: wpa_supplicant Tainted: G           O   3.17.0+ #6
Hardware name: LENOVO 20ANCTO1WW/20ANCTO1WW, BIOS GLET71WW (2.25 ) 07/02/2014
 0000000000000009 ffffffff814fa911 ffff8804288db8f8 ffffffff81064f52
 0000000000001808 ffff8804288db948 ffff88040add8660 ffff8804291b5600
 0000000000000000 ffffffff81064fb7 ffffffffa07b73d0 0000000000000020
Call Trace:
 [<ffffffff814fa911>] ? dump_stack+0x41/0x51
 [<ffffffff81064f52>] ? warn_slowpath_common+0x72/0x90
 [<ffffffff81064fb7>] ? warn_slowpath_fmt+0x47/0x50
 [<ffffffffa07a39ea>] ? iwl_mvm_set_tx_params+0x60a/0x6f0 [iwlmvm]
 [<ffffffffa07a3cf8>] ? iwl_mvm_tx_skb+0x48/0x3c0 [iwlmvm]
 [<ffffffffa079cb9b>] ? iwl_mvm_mac_tx+0x7b/0x180 [iwlmvm]
 [<ffffffffa0746ce9>] ? __ieee80211_tx+0x2b9/0x3c0 [mac80211]
 [<ffffffffa07492f3>] ? ieee80211_tx+0xb3/0x100 [mac80211]
 [<ffffffffa0749c49>] ? ieee80211_subif_start_xmit+0x459/0xca0 [mac80211]
 [<ffffffff814116e7>] ? dev_hard_start_xmit+0x337/0x5f0
 [<ffffffff81430d46>] ? sch_direct_xmit+0x96/0x1f0
 [<ffffffff81411ba3>] ? __dev_queue_xmit+0x203/0x4f0
 [<ffffffff8142f670>] ? ether_setup+0x70/0x70
 [<ffffffff814e96a1>] ? packet_sendmsg+0xf81/0x1110
 [<ffffffff8140625c>] ? skb_free_datagram+0xc/0x40
 [<ffffffff813f7538>] ? sock_sendmsg+0x88/0xc0
 [<ffffffff813f7274>] ? move_addr_to_kernel.part.20+0x14/0x60
 [<ffffffff811c47c2>] ? __inode_wait_for_writeback+0x62/0xb0
 [<ffffffff813f7a91>] ? SYSC_sendto+0xf1/0x180
 [<ffffffff813f88f9>] ? __sys_recvmsg+0x39/0x70
 [<ffffffff8150066d>] ? system_call_fastpath+0x1a/0x1f
---[ end trace cc19a150d311fc63 ]---

which was reported here: https://bugzilla.kernel.org/show_bug.cgi?id=85691

CC: <stable@vger.kernel.org> [3.13+]
Signed-off-by: NEmmanuel Grumbach <emmanuel.grumbach@intel.com>

When mac80211 wants to ensure that a frame is sent, it calls
the flush() callback. Until now, iwldvm implemented this by
waiting that all the frames are sent (ACKed or timeout).
In case of weak signal, this can take a significant amount
of time, delaying the next connection (in case of roaming).
Many users have reported that the flush would take too long
leading to the following error messages to be printed:

iwlwifi 0000:03:00.0: fail to flush all tx fifo queues Q 2
iwlwifi 0000:03:00.0: Current SW read_ptr 161 write_ptr 201
iwl data: 00000000: 00 00 00 00 00 00 00 00 fe ff 01 00 00 00 00 00
[snip]
iwlwifi 0000:03:00.0: FH TRBs(0) = 0x00000000
[snip]
iwlwifi 0000:03:00.0: Q 0 is active and mapped to fifo 3 ra_tid 0x0000 [9,9]
[snip]

Instead of waiting for these packets, simply drop them. This
significantly improves the responsiveness of the network.
Note that all the queues are flushed, but the VO one. This
is not typically used by the applications and it likely
contains management frames that are useful for connection
or roaming.

This bug is tracked here:
https://bugzilla.kernel.org/show_bug.cgi?id=56581

But it is duplicated in distributions' trackers.
A simple search in Ubuntu's database led to these bugs:

https://bugs.launchpad.net/ubuntu/+source/linux-firmware/+bug/1270808
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1305406
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1356236
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1360597
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1361809

Cc: <stable@vger.kernel.org>
Depends-on: 77be2c54 ("mac80211: add vif to flush call")
Signed-off-by: NEmmanuel Grumbach <emmanuel.grumbach@intel.com>

Don't add the time event to the list. We added it several
times the same time event, which leads to an infinite loop
when walking the list.

Since we (currently) don't support more than one ROC for STA
vif at a time, enforce this and don't add the time event
to any list.

We were also missing the locking of the mutex which led to
a lockdep splat - fix that.
Signed-off-by: NMatti Gottlieb <matti.gottlieb@intel.com>
Signed-off-by: NEmmanuel Grumbach <emmanuel.grumbach@intel.com>

The tx power should be limited from many reasons.
currently, setting the tx power is available by the mvm only for
station interface. Adding the tx power condition to
bss_info_changed_ap_ibss make it available also for AP.
Signed-off-by: NHaim Dreyfuss <haim.dreyfuss@intel.com>
Signed-off-by: NEmmanuel Grumbach <emmanuel.grumbach@intel.com>

The probe requests sent during scan must get BT prio 3.
Fix that.
Signed-off-by: NEmmanuel Grumbach <emmanuel.grumbach@intel.com>

Cc: <stable@vger.kernel.org> [3.16+]
Fixes: 2adc8949 ("iwlwifi: mvm: BT Coex - fix boost register / LUT values")
Signed-off-by: NEmmanuel Grumbach <emmanuel.grumbach@intel.com>

I changed the string but forgot to update the fix also to
MODULE_FIRMWARE().
Signed-off-by: NLiad Kaufman <liad.kaufman@intel.com>
Signed-off-by: NEmmanuel Grumbach <emmanuel.grumbach@intel.com>

The LTR is the handshake between the device and the root
complex about the latency allowed when the bus exits power
save. This configuration was missing and this led to high
latency in the link power up. The end user could experience
high latency in the network because of this.

Cc: <stable@vger.kernel.org> [3.10+]
Signed-off-by: NEmmanuel Grumbach <emmanuel.grumbach@intel.com>

Pull networking updates from David Miller:
 "Most notable changes in here:

   1) By far the biggest accomplishment, thanks to a large range of
      contributors, is the addition of multi-send for transmit.  This is
      the result of discussions back in Chicago, and the hard work of
      several individuals.

      Now, when the ->ndo_start_xmit() method of a driver sees
      skb->xmit_more as true, it can choose to defer the doorbell
      telling the driver to start processing the new TX queue entires.

      skb->xmit_more means that the generic networking is guaranteed to
      call the driver immediately with another SKB to send.

      There is logic added to the qdisc layer to dequeue multiple
      packets at a time, and the handling mis-predicted offloads in
      software is now done with no locks held.

      Finally, pktgen is extended to have a "burst" parameter that can
      be used to test a multi-send implementation.

      Several drivers have xmit_more support: i40e, igb, ixgbe, mlx4,
      virtio_net

      Adding support is almost trivial, so export more drivers to
      support this optimization soon.

      I want to thank, in no particular or implied order, Jesper
      Dangaard Brouer, Eric Dumazet, Alexander Duyck, Tom Herbert, Jamal
      Hadi Salim, John Fastabend, Florian Westphal, Daniel Borkmann,
      David Tat, Hannes Frederic Sowa, and Rusty Russell.

   2) PTP and timestamping support in bnx2x, from Michal Kalderon.

   3) Allow adjusting the rx_copybreak threshold for a driver via
      ethtool, and add rx_copybreak support to enic driver.  From
      Govindarajulu Varadarajan.

   4) Significant enhancements to the generic PHY layer and the bcm7xxx
      driver in particular (EEE support, auto power down, etc.) from
      Florian Fainelli.

   5) Allow raw buffers to be used for flow dissection, allowing drivers
      to determine the optimal "linear pull" size for devices that DMA
      into pools of pages.  The objective is to get exactly the
      necessary amount of headers into the linear SKB area pre-pulled,
      but no more.  The new interface drivers use is eth_get_headlen().
      From WANG Cong, with driver conversions (several had their own
      by-hand duplicated implementations) by Alexander Duyck and Eric
      Dumazet.

   6) Support checksumming more smoothly and efficiently for
      encapsulations, and add "foo over UDP" facility.  From Tom
      Herbert.

   7) Add Broadcom SF2 switch driver to DSA layer, from Florian
      Fainelli.

   8) eBPF now can load programs via a system call and has an extensive
      testsuite.  Alexei Starovoitov and Daniel Borkmann.

   9) Major overhaul of the packet scheduler to use RCU in several major
      areas such as the classifiers and rate estimators.  From John
      Fastabend.

  10) Add driver for Intel FM10000 Ethernet Switch, from Alexander
      Duyck.

  11) Rearrange TCP_SKB_CB() to reduce cache line misses, from Eric
      Dumazet.

  12) Add Datacenter TCP congestion control algorithm support, From
      Florian Westphal.

  13) Reorganize sk_buff so that __copy_skb_header() is significantly
      faster.  From Eric Dumazet"

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1558 commits)
  netlabel: directly return netlbl_unlabel_genl_init()
  net: add netdev_txq_bql_{enqueue, complete}_prefetchw() helpers
  net: description of dma_cookie cause make xmldocs warning
  cxgb4: clean up a type issue
  cxgb4: potential shift wrapping bug
  i40e: skb->xmit_more support
  net: fs_enet: Add NAPI TX
  net: fs_enet: Remove non NAPI RX
  r8169:add support for RTL8168EP
  net_sched: copy exts->type in tcf_exts_change()
  wimax: convert printk to pr_foo()
  af_unix: remove 0 assignment on static
  ipv6: Do not warn for informational ICMP messages, regardless of type.
  Update Intel Ethernet Driver maintainers list
  bridge: Save frag_max_size between PRE_ROUTING and POST_ROUTING
  tipc: fix bug in multicast congestion handling
  net: better IFF_XMIT_DST_RELEASE support
  net/mlx4_en: remove NETDEV_TX_BUSY
  3c59x: fix bad split of cpu_to_le32(pci_map_single())
  net: bcmgenet: fix Tx ring priority programming
  ...

Pull ARM64 SoC changes from Arnd Bergmann:
 "Starting with 3.18, we are merging SoC-specific changes for arm64
  through the arm-soc tree, like we have been doing for arm32.

  This time, there is only one set of changes, adding support for the
  Cavium "Thunder" Soc family.  Since the changes are relatively small,
  this includes Kconfig, defconfig and DT changes.

  If all goes well, we will never require adding actual C source code
  for platform support in arm64, given that the architecture is more
  clearly defined and we have moved out a lot of the platform specifics
  into device drivers for arm32 already"

* tag 'arm64-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  arm64, defconfig: Enable Cavium Thunder SoC in defconfig
  arm64, thunder: Add Kconfig option for Cavium Thunder SoC Family
  arm64, thunder: Document devicetree bindings for Cavium Thunder SoC
  arm64, thunder: Add initial dts for Cavium Thunder SoC

Pull ARM SoC defconfig changes from Arnd Bergmann:
 "This is a collection of the various changes to defconfig files, most
  importantly enabling some additional platforms in the
  multi_v7_defconfig file"

* tag 'defconfig-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (40 commits)
  ARM: configs: fix duplicate entry in multi_v7
  ARM: multi_v7_defconfig: add missing Tegra options
  ARM: bcm2835: enable USB_DWC2_HOST in defconfig
  ARM: meson: update multi_v7_defconfig
  ARM: multi_v7_defconfig: Enable Mediatek platform
  ARM: qcom: Update defconfig
  ARM: mvebu: add gpio-fan to mvebu_v7_defconfig
  ARM: mvebu: add LED class support built-in in mvebu_v7_defconfig
  ARM: shmobile: Enable r8a7794 SoC in shmobile_defconfig
  ARM: LPC32xx: defconfig update
  ARM: configs: Enable cpufreq-cpu0 for multi_v7_defconfig
  ARM: configs: Remove REGULATOR_VIRTUAL_CONSUMER from defconfigs
  ARM: tegra: enable Atmel touchpad in defconfig
  ARM: at91: sama5: update defconfig
  ARM: at91: at91sam9rl: update defconfig
  ARM: at91: at91sam9g45: update defconfig
  ARM: at91: at91sam9263: update defconfig
  ARM: at91: at91sam9261_9g10: update defconfig
  ARM: at91: at91sam9260_9g20: update defconfig
  ARM: at91: at91_dt: update defconfig
  ...

Pull ARM SoC driver updates from Arnd Bergmann:
 "These are changes for drivers that are intimately tied to some SoC and
  for some reason could not get merged through the respective subsystem
  maintainer tree.

  Most of the new code is for the Keystone Navigator driver, which is
  new base support that is going to be needed for their hardware
  accelerated network driver and other units.

  Most of the commits are for moving old code around from at91 and omap
  for things that are done in device drivers nowadays.

   - at91: move reset, poweroff, memory and clocksource code into
     drivers directories
   - socfpga: add edac driver (through arm-soc, as requested by Boris)
   - omap: move omap-intc code to drivers/irqchip
   - sunxi: added an RTC driver for sun6i
   - omap: mailbox driver related changes
   - keystone: support for the "Navigator" component
   - versatile: new reboot, led and soc drivers"

* tag 'drivers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (92 commits)
  bus: arm-ccn: Fix spurious warning message
  leds: add device tree bindings for register bit LEDs
  soc: add driver for the ARM RealView
  power: reset: driver for the Versatile syscon reboot
  leds: add a driver for syscon-based LEDs
  drivers/soc: ti: fix build break with modules
  MAINTAINERS: Add Keystone Multicore Navigator drivers entry
  soc: ti: add Keystone Navigator DMA support
  Documentation: dt: soc: add Keystone Navigator DMA bindings
  soc: ti: add Keystone Navigator QMSS driver
  Documentation: dt: soc: add Keystone Navigator QMSS bindings
  rtc: sunxi: Depend on platforms sun4i/sun7i that actually have the rtc
  rtc: sun6i: Add sun6i RTC driver
  irqchip: omap-intc: remove unnecessary comments
  irqchip: omap-intc: correct maximum number or MIR registers
  irqchip: omap-intc: enable TURBO idle mode
  irqchip: omap-intc: enable IP protection
  irqchip: omap-intc: remove unnecesary of_address_to_resource() call
  irqchip: omap-intc: comment style cleanup
  irqchip: omap-intc: minor improvement to omap_irq_pending()
  ...

Pull ARM SoC DT updates from Arnd Bergmann:
 "As usual, this is the largest branch, though this time a little under
  half of the total changes with 307 individual non-merge changesets.

  The largest changes are the addition of new machines, in particular
  the Tegra based Chromebook, the Renesas r8a7794 SoC, and DT support
  for the old i.MX1 platform.

  Other changes include
   - at91: various sam9 and sama5 updates
   - exynos: much extended Peach Pi/Pit (Chromebook 2) support
   - keystone: new peripherals
   - meson: added DT for meson6 SoC
   - mvebu: new device support for Armada 370/375
   - qcom: improved support for IPQ8064 and MSM8x60
   - rockchip: much improved support for rk3288
   - shmobile: lots of updates all over the place
   - sunxi: dts license change
   - sunxi: more a23 device support
   - vexpress: CLCD DT description"

* tag 'dt-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (308 commits)
  ARM: DTS: meson: update DTSI to add watchdog node
  ARM: dts: keystone-k2l: fix mdio io start address
  ARM: dts: keystone-k2e: fix mdio io start address
  ARM: dts: keystone-k2e: update usb1 node for dma properties
  ARM: dts: keystone: fix io range for usb_phy0
  Revert "Merge tag 'hix5hd2-dt-for-3.18' of git://github.com/hisilicon/linux-hisi into next/dt"
  Revert "ARM: dts: hix5hd2: add wdg node"
  ARM: dts: add rk3288 i2s controller
  ARM: vexpress: Add CLCD Device Tree properties
  ARM: bcm2835: add I2S pinctrl to device tree
  ARM: meson: documentation: add bindings documentation
  ARM: meson: dts: add basic Meson/Meson6/Meson6-atv1200 DTSI/DTS
  ARM: dts: mt6589: Change compatible string for GIC
  ARM: dts: mediatek: Add compatible property for aquaris5
  ARM: dts: mt6589-aquaris5: Add boot argument earlyprintk
  ARM: dts: mt6589: Fix typo in GIC unit address
  ARM: dts: Build dtb for Mediatek board
  ARM: dts: keystone: fix bindings for pcie and usb clock nodes
  ARM: dts: keystone: k2l: Fix chip selects for SPI devices
  ARM: dts: keystone: add dsp gpio controllers nodes
  ...

Pull ARM SoC platform changes from Arnd Bergmann:
 "New and updated SoC support.  Among the things new for this release
  are:

   - at91: Added support for the new SAMA5D4 SoC, following the earlier
     SAMA5D3
   - bcm: Added support for BCM63XX family of DSL SoCs
   - hisi: Added support for HiP04 server-class SoC
   - meson: Initial support for the Amlogic Meson6 (aka 8726MX) platform
   - shmobile: added support for new r8a7794 (R-Car E2) automotive SoC

  Noteworthy changes to existing SoC support are:

   - imx: convert i.MX1 to device tree
   - omap: lots of power management work
   - omap: base support to enable moving to standard UART driver
   - shmobile: lots of progress for multiplatform support, still
     ongoing"

* tag 'soc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (171 commits)
  ARM: hisi: depend on ARCH_MULTI_V7
  CNS3xxx: Fix debug UART.
  ARM: at91: fix nommu build regression
  ARM: meson: add basic support for MesonX SoCs
  ARM: meson: debug: add debug UART for earlyprintk support
  irq: Export handle_fasteoi_irq
  ARM: mediatek: Add earlyprintk support for mt6589
  ARM: hisi: Fix platmcpm compilation when ARMv6 is selected
  ARM: debug: fix alphanumerical order on debug uarts
  ARM: at91: document Atmel SMART compatibles
  ARM: at91: add sama5d4 support to sama5_defconfig
  ARM: at91: dt: add device tree file for SAMA5D4ek board
  ARM: at91: dt: add device tree file for SAMA5D4 SoC
  ARM: at91: SAMA5D4 SoC detection code and low level routines
  ARM: at91: introduce basic SAMA5D4 support
  clk: at91: add a driver for the h32mx clock
  ARM: pxa3xx: provide specific platform_devices for all ssp ports
  ARM: pxa: ssp: provide platform_device_id for PXA3xx
  ARM: OMAP4+: Remove static iotable mappings for SRAM
  ARM: OMAP4+: Move SRAM data to DT
  ...

Pull ARM SoC cleanups from Arnd Bergmann:
 "This time around, the cleanup branch contains mostly code removal.  A
  number of board files for at91, imx and msm have become obsolete
  because of the DT conversion and are now ready to be removed.  The
  OMAP platform has traditionally had its own DMA engine abstraction and
  as this is being phased out, a lot of the original code is now unused
  and can be removed as well.

  S3C24xx can be simplified now that the restart code is a proper device
  driver.

  Finally, a number of cleanups in shmobile are done to prepare for the
  addition of new code in other branches"

* tag 'cleanup-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (43 commits)
  ARM: at91: Remove the support for the RSI EWS board
  arm: mach-omap2: Convert pr_warning to pr_warn
  ARM: OMAP: Remove unused pieces of legacy DMA API
  ARM: at91: remove board file for Acme Systems Fox G20
  ARM: orion5x: Convert pr_warning to pr_warn
  ARM: S3C24XX: remove separate restart code
  ARM: EXYNOS: Do not calculate boot address twice
  ARM: sunxi: Remove sun4i reboot code from mach directory
  ARM: imx: Remove mach-mxt_td60 board file
  ARM: shmobile: armadillo800eva legacy: Use rmobile_add_devices_to_domains()
  ARM: shmobile: r8a7740: Clean up pm domain table
  ARM: shmobile: r8a7740: Use rmobile_add_devices_to_domains()
  ARM: shmobile: sh7372: Make domain_devices[] static __initdata
  ARM: shmobile: mackerel: Make domain_devices[] static __initdata
  clocksource: tcb_clksrc: sanitize IRQ request
  ARM: at91/tclib: mask interruptions at shutdown and probe
  ARM: at91/tclib: move initialization from alloc to probe
  ARM: at91/tclib: prefer using of devm_* functions
  ARM: clps711x: Switch CLPS711X subarch to use clk and clocksource driver
  ARM: shmobile: r8a7791 is now called "R-Car M2-W"
  ...

Pull ARM SoC non-critical bug fixes from Arnd Bergmann:
 "These are bug fixes for harmless problems that were not important
  enough to get fixed in 3.17.  The majority of these are OMAP specific,
  but there are also a couple for Marvell mvebu, cns3xxx, and others, as
  well as some updates for the MAINTAINERS file.

  In particular, Robert Jarzmik and Daniel Mack now volunteered to help
  out maintaining the PXA platform, Krzysztof Halasa took over the
  cns3xxx platform, Carlo Caione is the maintainer for the new Amlogic
  meson platform, and Matthias Brugger is now listed for the mediatek
  platform he recently contributed"

* tag 'fixes-nc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (42 commits)
  MAINTAINERS: update Shawn's email address
  MAINTAINERS: condense some Tegra related entries
  MAINTAINERS: add Alexandre Courbot for Tegra
  MAINTAINERS: CNS3xxx and IXP4xx update.
  MAINTAINERS: Add maintainers entry for Mediatek SoCs
  arm, vt8500, LLVMLlinux: Use mcr instead of mcr% for mach-vt8500
  MAINTAINERS: add a third maintainer to mach-bcm
  CNS3xxx: Fix PCIe read size limit.
  CNS3xxx: Fix logical PCIe topology.
  CNS3xxx: Fix debug UART.
  MAINTAINERS: Add entry for the Amlogic MesonX SoCs
  MAINTAINERS: update ARM pxa maintainers
  ARM: at91/PMC: don't forget to write PMC_PCDR register to disable clocks
  ARM: at91: fix at91sam9263ek DT mmc pinmuxing settings
  ARM: mvebu: Netgear RN102: Use Hardware BCH ECC
  ARM: Kirkwood: Fix DT based DSA.
  ARM: OMAP2+: make of_device_ids const
  ARM: omap2: make arrays containing machine compatible strings const
  ARM: LPC32xx: Fix reset function
  ARM: mvebu: Netgear RN2120: Use Hardware BCH ECC
  ...

No need to store netlbl_unlabel_genl_init result and test it before returning.
Signed-off-by: NFabian Frederick <fabf@skynet.be>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Add two helpers so that drivers do not have to care of BQL being
available or not.
Signed-off-by: NEric Dumazet <edumazet@google.com>
Reported-by: NJim Davis <jim.epost@gmail.com>
Fixes: 29d40c90 ("net/mlx4_en: Use prefetch in tx path")
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

In commit 7bced397,
dma_cookie was removed from struct skbuff.
But the description of dma_cookie still exist.
So the "make xmldocs" output following warning.

Warning(.//include/linux/skbuff.h:609): Excess struct/union
/enum/typedef member 'dma_cookie' description in 'sk_buff'

Remove description of dma_cookie fix the symptom.
Signed-off-by: NMasanari Iida <standby24x7@gmail.com>
Acked-by: NDan Williams <dan.j.williams@intel.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The tx_desc struct holds 8 __be64 values.  The original code in
ring_tx_db() took a tx_desc pointer then casted it to an int pointer and
then casted it to a u64 pointer.  It was confusing and triggered some
static checker warnings.

I have changed the cxgb_pio_copy() function to only take tx_desc
pointers.  This isn't really a loss of flexibility because anything else
was buggy to begin with.

I also removed the casting on the destination pointer since that was
unnecessary and a bit messy.
Signed-off-by: NDan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

"cntxt_id" is an unsigned int but "udb" is a u64 so there is a potential
shift wrapping bug here.
Signed-off-by: NDan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Support skb->xmit_more in i40e is straightforward : we need to move
around i40e_maybe_stop_tx() call to correctly test netif_xmit_stopped()
before taking the decision to not kick the NIC.
Signed-off-by: NEric Dumazet <edumazet@google.com>
Signed-off-by: NDaniel Borkmann <dborkman@redhat.com>
Acked-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Christophe Leroy says:

====================
net: fs_enet: Remove non NAPI RX and add NAPI for TX

When using a MPC8xx as a router, 'perf' shows a significant time spent in
fs_enet_interrupt() and fs_enet_start_xmit().
'perf annotate' shows that the time spent in fs_enet_start_xmit is indeed spent
between spin_unlock_irqrestore() and the following instruction, hence in
interrupt handling. This is due to the TX complete interrupt that fires after
each transmitted packet.
This patchset first remove all non NAPI handling as NAPI has become the only
mode for RX, then adds NAPI for handling TX complete.
This improves NAT TCP throughput by 21% on MPC885 with FEC.

Tested on MPC885 with FEC.

[PATCH 1/2] net: fs_enet: Remove non NAPI RX
[PATCH 2/2] net: fs_enet: Add NAPI TX
Signed-off-by: NChristophe Leroy <christophe.leroy@c-s.fr>
====================
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

When using a MPC8xx as a router, 'perf' shows a significant time spent in
fs_enet_interrupt() and fs_enet_start_xmit().
'perf annotate' shows that the time spent in fs_enet_start_xmit is indeed spent
between spin_unlock_irqrestore() and the following instruction, hence in
interrupt handling. This is due to the TX complete interrupt that fires after
each transmitted packet.
This patch modifies the handling of TX complete to use NAPI.
With this patch, my NAT router offers a throughput improved by 21%

Original performance:

[root@localhost tmp]# scp toto pgs:/tmp
toto                                          100%  256MB   2.8MB/s   01:31

Performance with the patch:

[root@localhost tmp]# scp toto pgs:/tmp
toto                                          100%  256MB   3.4MB/s   01:16
Signed-off-by: NChristophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

In the probe function, use_napi is inconditionnaly set to 1. This patch removes
all the code which is conditional to !use_napi, and removes use_napi which has
then become useless.
Signed-off-by: NChristophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

RTL8168EP is Realtek PCIe Gigabit Ethernet controller with DASH support.
It is a successor chip of RTL8168DP.

For RTL8168EP, the read/write ocp register is via eri channel type 2, so I
move ocp_xxx() related functions under rtl_eri_xxx. And use r8168dp_ocp_xxx()
for RTL8168DP ocp read/write, r8168ep_ocp_xxx() for RTL8168EP ocp read/write.

The way of checking dash enable is different with RTL8168DP. I use
r8168dp_check_dash()for RTL8168DP and r8168ep_check_dash() for RTL8168EP,
to check if dash is enabled.

The driver_start() and driver_stop() of RTL8168EP is also different with
RTL8168DP. I use rtl8168dp_driver_xxx() for RTL8168DP and
rtl8168ep_driver_xxx for RTL8168EP.

Right now, RTL8168EP phy mcu did not need firmware code patch, so I did not
add firmware code for it.
so I did not add firmware code for it.
Signed-off-by: NChun-Hao Lin <hau@realtek.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

We need to copy exts->type when committing the change, otherwise
it would be always 0. This is a quick fix for -net and -stable,
for net-next tcf_exts will be removed.

Fixes: commit 33be6271 ("net_sched: act: use standard struct list_head")
Reported-by: NJamal Hadi Salim <jhs@mojatatu.com>
Cc: Jamal Hadi Salim <jhs@mojatatu.com>
Cc: John Fastabend <john.fastabend@gmail.com>
Signed-off-by: NCong Wang <xiyou.wangcong@gmail.com>
Acked-by: NJamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Because CCN's cycle counter always runs, it will generate
an interrupt on overflow even if the relevant perf event
was not requested, causing a spurious warning message.

Fixed now by warning on only normal counter unwanted
overflows. Also cleaning the overflow mask at init now,
not to warn on event previously requested by firmware.
Signed-off-by: NPawel Moll <pawel.moll@arm.com>
Signed-off-by: NOlof Johansson <olof@lixom.net>
Signed-off-by: NArnd Bergmann <arnd@arndb.de>

My Freescale email address will be gone shortly.  Update my email to be
the Linaro one.
Signed-off-by: NShawn Guo <shawn.guo@freescale.com>
Signed-off-by: NArnd Bergmann <arnd@arndb.de>

There's little point having specific entries in MAINTAINERS for Tegra
drivers that are already covered by the top-level Tegra architecture
support entry, and maintained by people listed there. Remove the
duplicates.
Signed-off-by: NStephen Warren <swarren@nvidia.com>
Acked-by: NThierry Reding <treding@nvidia.com>
Signed-off-by: NArnd Bergmann <arnd@arndb.de>