Commit Graph

5425 Commits

Author SHA1 Message Date
David S. Miller
fb796707d7 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Both conflict were simple overlapping changes.

In the kaweth case, Eric Dumazet's skb_cow() bug fix overlapped the
conversion of the driver in net-next to use in-netdev stats.

Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-21 20:23:53 -07:00
David S. Miller
6b6cbc1471 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Conflicts were simply overlapping changes.  In the net/ipv4/route.c
case the code had simply moved around a little bit and the same fix
was made in both 'net' and 'net-next'.

In the net/sched/sch_generic.c case a fix in 'net' happened at
the same time that a new argument was added to qdisc_hash_add().

Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-15 21:16:30 -04:00
Dongdong Liu
b9c1153f7a PCI: hisi: Fix DT binding (hisi-pcie-almost-ecam)
The "hisilicon,pcie-almost-ecam" binding goes against the usual DT
conventions, and is non-sensical in that it describes the IP based on
what it isn't.  Fix the DT binding with "hisilicon,hip06-pcie-ecam"
and "hisilicon,hip07-pcie-ecam".

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Dongdong Liu <liudongdong3@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2017-04-12 10:46:47 -05:00
Christoph Hellwig
4244de1c64 PCI: remove pci_enable_msix
Unused now that all callers switched to pci_alloc_irq_vectors.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-11 11:16:03 -04:00
Niklas Cassel
794a8604fe PCI: dwc: Fix dw_pcie_ops NULL pointer dereference
Fix a crash from dereferencing a NULL dw_pcie_ops pointer.  For example,
on ARTPEC-6:

  Unable to handle kernel NULL pointer dereference at virtual address 00000004
  pgd = c0204000
  [00000004] *pgd=00000000
  Internal error: Oops: 5 [#1] SMP ARM
  Modules linked in:
  CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.11.0-rc3-next-20170321 #1
  Hardware name: Axis ARTPEC-6 Platform
  task: db098000 task.stack: db096000
  PC is at dw_pcie_writel_dbi+0x2c/0xd0

Prior to 442ec4c04d ("PCI: dwc: all: Split struct pcie_port into
host-only and core structures"), every driver had a struct pcie_host_ops
with function pointers, typically used as:

  if (pp->ops->readl_rc)
    return pp->ops->readl_rc(...);

442ec4c04d split struct pcie_host_ops into two pieces: struct
dw_pcie_host_ops and struct dw_pcie_ops, so the above became:

  if (pci->ops->readl_dbi)
    return pci->ops->readl_dbi(...);

But pcie-artpec6.c and pcie-designware-plat.c don't need the dw_pcie_ops
pointers and didn't supply a pci->ops struct, which leads to NULL pointer
dereferences.

Supply an empty struct dw_pcie_ops to avoid the NULL pointer dereferences.

[bhelgaas: changelog]
Fixes: 442ec4c04d ("PCI: dwc: all: Split struct pcie_port into host-only and core structures")
Signed-off-by: Niklas Cassel <niklas.cassel@axis.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Kishon Vijay Abraham I <kishon@ti.com>
Acked-by: Joao Pinto <jpinto@synopsys.com>
2017-04-04 08:24:25 -05:00
Arnd Bergmann
6665f8a307 PCI: dwc: Select PCI_HOST_COMMON for hisi
Without PCI_HOST_COMMON support enabled, we get a link error:

  drivers/pci/dwc/built-in.o: In function `hisi_pcie_map_bus':
  pcie-hisi.c:(.text+0x8860): undefined reference to `pci_ecam_map_bus'
  drivers/pci/dwc/built-in.o: In function `hisi_pcie_almost_ecam_probe':
  pcie-hisi.c:(.text+0x88b4): undefined reference to `pci_host_common_probe'

Add an explicit 'select', as the other users have.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Jingoo Han <jingoohan1@gmail.com>
2017-04-03 16:17:11 -05:00
Tomasz Nowicki
feb199ebef PCI: thunder-pem: Fix legacy firmware PEM-specific resources
SZ_16M PEM resource size includes PEM-specific register and its children
resources. Reservation of the whole SZ_16M range leads to child device
driver failure when pcieport driver is requesting resources:

  pcieport 0004:1f:00.0: can't enable device: BAR 0 [mem 0x87e0c0f00000-0x87e0c0ffffff 64bit] not claimed

So we cannot reserve full 16M here and instead we want to reserve
PEM-specific register only which is SZ_64K.

At the end increase PEM resource to SZ_16M since this is what
thunder_pem_init() call expects for proper initialization.

Fixes: 9abb27c759 ("PCI: thunder-pem: Add legacy firmware support for Cavium ThunderX host controller")
Signed-off-by: Tomasz Nowicki <tn@semihalf.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
CC: stable@vger.kernel.org	# v4.10+
2017-04-03 15:10:21 -05:00
Tomasz Nowicki
9abb27c759 PCI: thunder-pem: Add legacy firmware support for Cavium ThunderX host controller
During early days of PCI quirks support, ThunderX firmware did not provide
PNP0c02 node with PCI configuration space and PEM-specific register ranges.
This means that for legacy FW we are not reserving these resources and
cannot gather PEM-specific resources for further PEM initialization.

To support already deployed legacy FW, calculate PEM-specific ranges and
provide resources reservation as fallback scenario into PEM driver when we
could not gather PEM reg base from ACPI tables.

Tested-by: Robert Richter <rrichter@cavium.com>
Signed-off-by: Tomasz Nowicki <tn@semihalf.com>
Signed-off-by: Vadim Lomovtsev <Vadim.Lomovtsev@caviumnetworks.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Robert Richter <rrichter@cavium.com>
CC: stable@vger.kernel.org	# v4.10+
2017-03-23 17:11:26 -05:00
Tomasz Nowicki
81caa91b72 PCI: thunder-pem: Use Cavium assigned hardware ID for ThunderX host controller
"CAV" is the only PNP/ACPI hardware ID vendor prefix assigned to Cavium so
fix this as it should be from day one.

Fixes: 44f22bd91e ("PCI: Add MCFG quirks for Cavium ThunderX pass2.x host controller")
Tested-by: Robert Richter <rrichter@cavium.com>
Signed-off-by: Tomasz Nowicki <tn@semihalf.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Robert Richter <rrichter@cavium.com>
CC: stable@vger.kernel.org	# v4.10+
2017-03-23 17:10:10 -05:00
Bjorn Helgaas
6e347b5e05 PCI: iproc: Save host bridge window resource in struct iproc_pcie
The host bridge memory window resource is inserted into the iomem_resource
tree and cannot be deallocated until the host bridge itself is removed.

Previously, the window was on the stack, which meant the iomem_resource
entry pointed into the stack and was corrupted as soon as the probe
function returned, which caused memory corruption and errors like this:

  pcie_iproc_bcma bcma0:8: resource collision: [mem 0x40000000-0x47ffffff] conflicts with PCIe MEM space [mem 0x40000000-0x47ffffff]

Move the memory window resource from the stack into struct iproc_pcie so
its lifetime matches that of the host bridge.

Fixes: c3245a5664 ("PCI: iproc: Request host bridge window resources")
Reported-and-tested-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
CC: stable@vger.kernel.org	# v4.8+
2017-03-09 11:27:07 -06:00
Yinghai Lu
3bd7db63a8 PCI/ASPM: Always set link->downstream to avoid NULL dereference on remove
We call pcie_aspm_exit_link_state() when we remove a device.  If the device
is the last PCIe function to be removed below a bridge and the bridge has
an ASPM link_state struct, we disable ASPM on the link.  Disabling ASPM
requires link->downstream (used in pcie_config_aspm_link()).

We previously set link->downstream in pcie_aspm_cap_init(), but only if the
device was not blacklisted.  Removing the blacklisted device caused a NULL
pointer dereference in the pcie_aspm_exit_link_state() ->
pcie_config_aspm_link() path:

  # echo 1 > /sys/bus/pci/devices/0000\:0b\:00.0/remove
  ...
   BUG: unable to handle kernel NULL pointer dereference at 0000000000000080
   IP: pcie_config_aspm_link+0x5d/0x2b0
   Call Trace:
    pcie_aspm_exit_link_state+0x75/0x130
    pci_stop_bus_device+0xa4/0xb0
    pci_stop_and_remove_bus_device_locked+0x1a/0x30
    remove_store+0x50/0x70
    dev_attr_store+0x18/0x30
    sysfs_kf_write+0x44/0x60
    kernfs_fop_write+0x10e/0x190
    __vfs_write+0x28/0x110
    ? rcu_read_lock_sched_held+0x5d/0x80
    ? rcu_sync_lockdep_assert+0x2c/0x60
    ? __sb_start_write+0x173/0x1a0
    ? vfs_write+0xb3/0x180
    vfs_write+0xc4/0x180
    SyS_write+0x49/0xa0
    do_syscall_64+0xa6/0x1c0
    entry_SYSCALL64_slow_path+0x25/0x25
   ---[ end trace bd187ee0267df5d9 ]---

To avoid this, set link->downstream in alloc_pcie_link_state(), so every
pcie_link_state structure has a valid link->downstream pointer.

[bhelgaas: changelog]
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Rajat Jain <rajatja@google.com>
CC: stable@vger.kernel.org
2017-03-07 14:23:30 -06:00
Ethan Zhao
0d5370d1d8 PCI: Prevent VPD access for QLogic ISP2722
QLogic ISP2722-based 16/32Gb Fibre Channel to PCIe Adapter has the VPD
access issue too, while read the common pci-sysfs access interface shown as

 /sys/devices/pci0000:00/0000:00:03.2/0000:0b:00.0/vpd

with simple 'cat' could cause system hang and panic:

  Kernel panic - not syncing: An NMI occurred. Depending on your system the reason for the NMI is logged in any one of the following resources:
  1. Integrated Management Log (IML)
  2. OA Syslog
  3. OA Forward Progress Log
  4. iLO Event Log
  CPU: 0 PID: 15070 Comm: udevadm Not tainted 4.1.12
  Hardware name: HP ProLiant DL380 Gen9/ProLiant DL380 Gen9, BIOS P89 12/27/2015
   0000000000000086 000000007f0cdf51 ffff880c4fa05d58 ffffffff817193de
   ffffffffa00b42d8 0000000000000075 ffff880c4fa05dd8 ffffffff81714072
   0000000000000008 ffff880c4fa05de8 ffff880c4fa05d88 000000007f0cdf51
  Call Trace:
   <NMI>  [<ffffffff817193de>] dump_stack+0x63/0x81
   [<ffffffff81714072>] panic+0xd0/0x20e
   [<ffffffffa00b390d>] hpwdt_pretimeout+0xdd/0xe0 [hpwdt]
   [<ffffffff81021fc9>] ? sched_clock+0x9/0x10
   [<ffffffff8101c101>] nmi_handle+0x91/0x170
   [<ffffffff8101c10c>] ? nmi_handle+0x9c/0x170
   [<ffffffff8101c5fe>] io_check_error+0x1e/0xa0
   [<ffffffff8101c719>] default_do_nmi+0x99/0x140
   [<ffffffff8101c8b4>] do_nmi+0xf4/0x170
   [<ffffffff817232c5>] end_repeat_nmi+0x1a/0x1e
   [<ffffffff815d724b>] ? pci_conf1_read+0xeb/0x120
   [<ffffffff815d724b>] ? pci_conf1_read+0xeb/0x120
   [<ffffffff815d724b>] ? pci_conf1_read+0xeb/0x120
   <<EOE>>  [<ffffffff815db4b3>] raw_pci_read+0x23/0x40
   [<ffffffff815db4fc>] pci_read+0x2c/0x30
   [<ffffffff8136f612>] pci_user_read_config_word+0x72/0x110
   [<ffffffff8136f746>] pci_vpd_pci22_wait+0x96/0x130
   [<ffffffff8136ff9b>] pci_vpd_pci22_read+0xdb/0x1a0
   [<ffffffff8136ea30>] pci_read_vpd+0x20/0x30
   [<ffffffff8137d590>] read_vpd_attr+0x30/0x40
   [<ffffffff8128e037>] sysfs_kf_bin_read+0x47/0x70
   [<ffffffff8128d24e>] kernfs_fop_read+0xae/0x180
   [<ffffffff8120dd97>] __vfs_read+0x37/0x100
   [<ffffffff812ba7e4>] ? security_file_permission+0x84/0xa0
   [<ffffffff8120e366>] ? rw_verify_area+0x56/0xe0
   [<ffffffff8120e476>] vfs_read+0x86/0x140
   [<ffffffff8120f3f5>] SyS_read+0x55/0xd0
   [<ffffffff81720f2e>] system_call_fastpath+0x12/0x71
  Shutting down cpus with NMI
  Kernel Offset: disabled
  drm_kms_helper: panic occurred, switching back to text console

So blacklist the access to its VPD.

Signed-off-by: Ethan Zhao <ethan.zhao@oracle.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
CC: stable@vger.kernel.org	# v4.6+
2017-03-07 14:16:57 -06:00
Jaehoon Chung
544714d8e1 PCI: exynos: Initialize elbi_base even when using PHY framework
Even when using the PHY framework, we need the elbi_base.  Before this
patch, we didn't initialize elbi_base, which caused NULL pointer
dereferences later.

Fixes: e7cd7ef58e ("PCI: exynos: Support the PHY generic framework")
Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2017-03-07 12:46:38 -06:00
Linus Torvalds
e27fd02d92 pci-v4.11-fixes-1
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Merge tag 'pci-v4.11-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

Pull PCI fixes from Bjorn Helgaas:

 - fix NULL pointer dereferences in many DesignWare-based drivers due to
   refactoring error

 - fix Altera config write breakage due to my refactoring error

* tag 'pci-v4.11-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
  PCI: altera: Fix TLP_CFG_DW0 for TLP write
  PCI: dwc: Fix crashes seen due to missing assignments
2017-03-03 16:44:21 -08:00
Linus Torvalds
e0d072250a Merge branch 'for-linus' of git://git.kernel.dk/linux-block
Pull block layer fixes from Jens Axboe:
 "A collection of fixes for this merge window, either fixes for existing
  issues, or parts that were waiting for acks to come in. This pull
  request contains:

   - Allocation of nvme queues on the right node from Shaohua.

     This was ready long before the merge window, but waiting on an ack
     from Bjorn on the PCI bit. Now that we have that, the three patches
     can go in.

   - Two fixes for blk-mq-sched with nvmeof, which uses hctx specific
     request allocations. This caused an oops. One part from Sagi, one
     part from Omar.

   - A loop partition scan deadlock fix from Omar, fixing a regression
     in this merge window.

   - A three-patch series from Keith, closing up a hole on clearing out
     requests on shutdown/resume.

   - A stable fix for nbd from Josef, fixing a leak of sockets.

   - Two fixes for a regression in this window from Jan, fixing a
     problem with one of his earlier patches dealing with queue vs bdi
     life times.

   - A fix for a regression with virtio-blk, causing an IO stall if
     scheduling is used. From me.

   - A fix for an io context lock ordering problem. From me"

* 'for-linus' of git://git.kernel.dk/linux-block:
  block: Move bdi_unregister() to del_gendisk()
  blk-mq: ensure that bd->last is always set correctly
  block: don't call ioc_exit_icq() with the queue lock held for blk-mq
  block: Initialize bd_bdi on inode initialization
  loop: fix LO_FLAGS_PARTSCAN hang
  nvme: Complete all stuck requests
  blk-mq: Provide freeze queue timeout
  blk-mq: Export blk_mq_freeze_queue_wait
  nbd: stop leaking sockets
  blk-mq: move update of tags->rqs to __blk_mq_alloc_request()
  blk-mq: kill blk_mq_set_alloc_data()
  blk-mq: make blk_mq_alloc_request_hctx() allocate a scheduler request
  blk-mq-sched: Allocate sched reserved tags as specified in the original queue tagset
  nvme: allocate nvme_queue in correct node
  PCI: add an API to get node from vector
  blk-mq: allocate blk_mq_tags and requests in correct node
2017-03-03 10:53:35 -08:00
Shaohua Li
27ddb68990 PCI: add an API to get node from vector
Next patch will use the API to get the node from vector for nvme device

Signed-off-by: Shaohua Li <shli@fb.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
2017-03-02 08:56:04 -07:00
Ingo Molnar
174cd4b1e5 sched/headers: Prepare to move signal wakeup & sigpending methods from <linux/sched.h> into <linux/sched/signal.h>
Fix up affected files that include this signal functionality via sched.h.

Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-03-02 08:42:32 +01:00
Linus Torvalds
b286cedd47 powerpc updates for 4.11 part 2
Highlights include:
 
  - An update of the disassembly code used by xmon to the latest versions in
    binutils. We've received permission from all the authors of the relevant
    binutils changes to relicense their changes to the relevant files from GPLv3
    to GPLv2, for inclusion in Linux. Thanks to Peter Bergner for doing the leg
    work to get permission from everyone.
 
  - Addition of the "architected" Power9 CPU table entry, allowing us to boot
    in Power9 architected mode under a hypervisor.
 
  - Updates to the Power9 PMU code.
 
  - Implementation of clear_bit_unlock_is_negative_byte() to optimise
    unlock_page().
 
  - Freescale updates from Scott: "Highlights include 8xx breakpoints and perf,
    t1042rdb display support, and board updates."
 
 Thanks to:
   Al Viro, Andrew Donnellan, Aneesh Kumar K.V, Balbir Singh, Douglas Miller,
   Frédéric Weisbecker, Gavin Shan, Madhavan Srinivasan, Michael Roth, Nathan
   Fontenot, Naveen N. Rao, Nicholas Piggin, Peter Bergner, Paul E. McKenney,
   Rashmica Gupta, Russell Currey, Sahil Mehta, Stewart Smith.
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Merge tag 'powerpc-4.11-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

Pull more powerpc updates from Michael Ellerman:
 "Highlights include:

   - an update of the disassembly code used by xmon to the latest
     versions in binutils. We've received permission from all the
     authors of the relevant binutils changes to relicense their changes
     to the relevant files from GPLv3 to GPLv2, for inclusion in Linux.
     Thanks to Peter Bergner for doing the leg work to get permission
     from everyone.

   - addition of the "architected" Power9 CPU table entry, allowing us
     to boot in Power9 architected mode under a hypervisor.

   - updates to the Power9 PMU code.

   - implementation of clear_bit_unlock_is_negative_byte() to optimise
     unlock_page().

   - Freescale updates from Scott: "Highlights include 8xx breakpoints
     and perf, t1042rdb display support, and board updates."

  Thanks to:
    Al Viro, Andrew Donnellan, Aneesh Kumar K.V, Balbir Singh, Douglas
    Miller, Frédéric Weisbecker, Gavin Shan, Madhavan Srinivasan,
    Michael Roth, Nathan Fontenot, Naveen N. Rao, Nicholas Piggin, Peter
    Bergner, Paul E. McKenney, Rashmica Gupta, Russell Currey, Sahil
    Mehta, Stewart Smith"

* tag 'powerpc-4.11-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (48 commits)
  powerpc: Remove leftover cputime_to_nsecs call causing build error
  powerpc/mm/hash: Always clear UPRT and Host Radix bits when setting up CPU
  powerpc/optprobes: Fix TOC handling in optprobes trampoline
  powerpc/pseries: Advertise Hot Plug Event support to firmware
  cxl: fix nested locking hang during EEH hotplug
  powerpc/xmon: Dump memory in CPU endian format
  powerpc/pseries: Revert 'Auto-online hotplugged memory'
  powerpc/powernv: Make PCI non-optional
  powerpc/64: Implement clear_bit_unlock_is_negative_byte()
  powerpc/powernv: Remove unused variable in pnv_pci_sriov_disable()
  powerpc/kernel: Remove error message in pcibios_setup_phb_resources()
  powerpc/mm: Fix typo in set_pte_at()
  pci/hotplug/pnv-php: Disable MSI and PCI device properly
  pci/hotplug/pnv-php: Disable surprise hotplug capability on conflicts
  pci/hotplug/pnv-php: Remove WARN_ON() in pnv_php_put_slot()
  powerpc: Add POWER9 architected mode to cputable
  powerpc/perf: use is_kernel_addr macro in perf_get_misc_flags()
  powerpc/perf: Avoid FAB_*_MATCH checks for power9
  powerpc/perf: Add restrictions to PMC5 in power9 DD1
  powerpc/perf: Use Instruction Counter value
  ...
2017-03-01 10:10:16 -08:00
Ley Foon Tan
2a7275a3d8 PCI: altera: Fix TLP_CFG_DW0 for TLP write
eb5767122f ("PCI: altera: Simplify TLB_CFG_DW0 usage") used
TLP_FMTTYPE_CFGRD* (instead of TLP_FMTTYPE_CFGWR*) for TLP writes, which
causes writing to configuration space to fail.  Fix it by using correct
FMTTYPE for write operation.

Fixes: eb5767122f ("PCI: altera: Simplify TLB_CFG_DW0 usage")
Signed-off-by: Ley Foon Tan <ley.foon.tan@intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
CC: stable@vger.kernel.org	# v4.9+
2017-02-28 15:06:29 -06:00
Masahiro Yamada
4091fb95b5 scripts/spelling.txt: add "followings" pattern and fix typo instances
Fix typos and add the following to the scripts/spelling.txt:

  followings||following

While we are here, add a missing colon in the boilerplate in DT binding
documents.  The "you SoC" in allwinner,sunxi-pinctrl.txt was fixed as
well.

I reworded "as the followings:" to "as follows:" for
drivers/usb/gadget/udc/renesas_usb3.c.

Link: http://lkml.kernel.org/r/1481573103-11329-32-git-send-email-yamada.masahiro@socionext.com
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-02-27 18:43:47 -08:00
Linus Torvalds
ac1820fb28 This is a tree wide change and has been kept separate for that reason.
Bart Van Assche noted that the ib DMA mapping code was significantly
 similar enough to the core DMA mapping code that with a few changes
 it was possible to remove the IB DMA mapping code entirely and
 switch the RDMA stack to use the core DMA mapping code.  This resulted
 in a nice set of cleanups, but touched the entire tree.  This branch
 will be submitted separately to Linus at the end of the merge window
 as per normal practice for tree wide changes like this.
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Merge tag 'for-next-dma_ops' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma

Pull rdma DMA mapping updates from Doug Ledford:
 "Drop IB DMA mapping code and use core DMA code instead.

  Bart Van Assche noted that the ib DMA mapping code was significantly
  similar enough to the core DMA mapping code that with a few changes it
  was possible to remove the IB DMA mapping code entirely and switch the
  RDMA stack to use the core DMA mapping code.

  This resulted in a nice set of cleanups, but touched the entire tree
  and has been kept separate for that reason."

* tag 'for-next-dma_ops' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma: (37 commits)
  IB/rxe, IB/rdmavt: Use dma_virt_ops instead of duplicating it
  IB/core: Remove ib_device.dma_device
  nvme-rdma: Switch from dma_device to dev.parent
  RDS: net: Switch from dma_device to dev.parent
  IB/srpt: Modify a debug statement
  IB/srp: Switch from dma_device to dev.parent
  IB/iser: Switch from dma_device to dev.parent
  IB/IPoIB: Switch from dma_device to dev.parent
  IB/rxe: Switch from dma_device to dev.parent
  IB/vmw_pvrdma: Switch from dma_device to dev.parent
  IB/usnic: Switch from dma_device to dev.parent
  IB/qib: Switch from dma_device to dev.parent
  IB/qedr: Switch from dma_device to dev.parent
  IB/ocrdma: Switch from dma_device to dev.parent
  IB/nes: Remove a superfluous assignment statement
  IB/mthca: Switch from dma_device to dev.parent
  IB/mlx5: Switch from dma_device to dev.parent
  IB/mlx4: Switch from dma_device to dev.parent
  IB/i40iw: Remove a superfluous assignment statement
  IB/hns: Switch from dma_device to dev.parent
  ...
2017-02-25 13:45:43 -08:00
Guenter Roeck
c0464062bf PCI: dwc: Fix crashes seen due to missing assignments
Fix the following crash, seen in dwc/pci-imx6.

  Unable to handle kernel NULL pointer dereference at virtual address 00000070
  pgd = c0004000
  [00000070] *pgd=00000000
  Internal error: Oops: 805 [#1] SMP ARM
  Modules linked in:
  CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.10.0-09686-g9e31489 #1
  Hardware name: Freescale i.MX6 Quad/DualLite (Device Tree)
  task: cb850000 task.stack: cb84e000
  PC is at imx6_pcie_probe+0x2f4/0x414
  ...

While at it, fix the same problem in various drivers instead of waiting for
individual crash reports.

The change in the imx6 driver was tested with qemu. The changes in other
drivers are based on code inspection and have been compile tested only.

Fixes: 442ec4c04d ("PCI: dwc: all: Split struct pcie_port into host-only and core structures")
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Vivek Gautam <vivek.gautam@codeaurora.org>  # designware-plat
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Kishon Vijay Abraham I <kishon@ti.com>
2017-02-25 09:06:02 -06:00
Linus Torvalds
60e8d3e116 pci-v4.11-changes
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Merge tag 'pci-v4.11-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

Pull PCI updates from Bjorn Helgaas:

 - add ASPM L1 substate support

 - enable PCIe Extended Tags when supported

 - configure PCIe MPS settings on iProc, Versatile, X-Gene, and Xilinx

 - increase VPD access timeout

 - add ACS quirks for Intel Union Point, Qualcomm QDF2400 and QDF2432

 - use new pci_irq_alloc_vectors() in more drivers

 - fix MSI affinity memory leak

 - remove unused MSI interfaces and update documentation

 - remove unused AER .link_reset() callback

 - avoid pci_lock / p->pi_lock deadlock seen with perf

 - serialize sysfs enable/disable num_vfs operations

 - move DesignWare IP from drivers/pci/host/ to drivers/pci/dwc/ and
   refactor so we can support both hosts and endpoints

 - add DT ECAM-like support for HiSilicon Hip06/Hip07 controllers

 - add Rockchip system power management support

 - add Thunder-X cn81xx and cn83xx support

 - add Exynos 5440 PCIe PHY support

* tag 'pci-v4.11-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (93 commits)
  PCI: dwc: Remove dependency of designware on CONFIG_PCI
  PCI: dwc: Add CONFIG_PCIE_DW_HOST to enable PCI dwc host
  PCI: dwc: Split pcie-designware.c into host and core files
  PCI: dwc: designware: Fix style errors in pcie-designware.c
  PCI: dwc: designware: Parse "num-lanes" property in dw_pcie_setup_rc()
  PCI: dwc: all: Split struct pcie_port into host-only and core structures
  PCI: dwc: designware: Get device pointer at the start of dw_pcie_host_init()
  PCI: dwc: all: Rename cfg_read/cfg_write to read/write
  PCI: dwc: all: Use platform_set_drvdata() to save private data
  PCI: dwc: designware: Move register defines to designware header file
  PCI: dwc: Use PTR_ERR_OR_ZERO to simplify code
  PCI: dra7xx: Group PHY API invocations
  PCI: dra7xx: Enable MSI and legacy interrupts simultaneously
  PCI: dra7xx: Add support to force RC to work in GEN1 mode
  PCI: dra7xx: Simplify probe code with devm_gpiod_get_optional()
  PCI: Move DesignWare IP support to new drivers/pci/dwc/ directory
  PCI: exynos: Support the PHY generic framework
  Documentation: binding: Modify the exynos5440 PCIe binding
  phy: phy-exynos-pcie: Add support for Exynos PCIe PHY
  Documentation: samsung-phy: Add exynos-pcie-phy binding
  ...
2017-02-23 11:53:22 -08:00
Linus Torvalds
3051bf36c2 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
Pull networking updates from David Miller:
 "Highlights:

   1) Support TX_RING in AF_PACKET TPACKET_V3 mode, from Sowmini
      Varadhan.

   2) Simplify classifier state on sk_buff in order to shrink it a bit.
      From Willem de Bruijn.

   3) Introduce SIPHASH and it's usage for secure sequence numbers and
      syncookies. From Jason A. Donenfeld.

   4) Reduce CPU usage for ICMP replies we are going to limit or
      suppress, from Jesper Dangaard Brouer.

   5) Introduce Shared Memory Communications socket layer, from Ursula
      Braun.

   6) Add RACK loss detection and allow it to actually trigger fast
      recovery instead of just assisting after other algorithms have
      triggered it. From Yuchung Cheng.

   7) Add xmit_more and BQL support to mvneta driver, from Simon Guinot.

   8) skb_cow_data avoidance in esp4 and esp6, from Steffen Klassert.

   9) Export MPLS packet stats via netlink, from Robert Shearman.

  10) Significantly improve inet port bind conflict handling, especially
      when an application is restarted and changes it's setting of
      reuseport. From Josef Bacik.

  11) Implement TX batching in vhost_net, from Jason Wang.

  12) Extend the dummy device so that VF (virtual function) features,
      such as configuration, can be more easily tested. From Phil
      Sutter.

  13) Avoid two atomic ops per page on x86 in bnx2x driver, from Eric
      Dumazet.

  14) Add new bpf MAP, implementing a longest prefix match trie. From
      Daniel Mack.

  15) Packet sample offloading support in mlxsw driver, from Yotam Gigi.

  16) Add new aquantia driver, from David VomLehn.

  17) Add bpf tracepoints, from Daniel Borkmann.

  18) Add support for port mirroring to b53 and bcm_sf2 drivers, from
      Florian Fainelli.

  19) Remove custom busy polling in many drivers, it is done in the core
      networking since 4.5 times. From Eric Dumazet.

  20) Support XDP adjust_head in virtio_net, from John Fastabend.

  21) Fix several major holes in neighbour entry confirmation, from
      Julian Anastasov.

  22) Add XDP support to bnxt_en driver, from Michael Chan.

  23) VXLAN offloads for enic driver, from Govindarajulu Varadarajan.

  24) Add IPVTAP driver (IP-VLAN based tap driver) from Sainath Grandhi.

  25) Support GRO in IPSEC protocols, from Steffen Klassert"

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1764 commits)
  Revert "ath10k: Search SMBIOS for OEM board file extension"
  net: socket: fix recvmmsg not returning error from sock_error
  bnxt_en: use eth_hw_addr_random()
  bpf: fix unlocking of jited image when module ronx not set
  arch: add ARCH_HAS_SET_MEMORY config
  net: napi_watchdog() can use napi_schedule_irqoff()
  tcp: Revert "tcp: tcp_probe: use spin_lock_bh()"
  net/hsr: use eth_hw_addr_random()
  net: mvpp2: enable building on 64-bit platforms
  net: mvpp2: switch to build_skb() in the RX path
  net: mvpp2: simplify MVPP2_PRS_RI_* definitions
  net: mvpp2: fix indentation of MVPP2_EXT_GLOBAL_CTRL_DEFAULT
  net: mvpp2: remove unused register definitions
  net: mvpp2: simplify mvpp2_bm_bufs_add()
  net: mvpp2: drop useless fields in mvpp2_bm_pool and related code
  net: mvpp2: remove unused 'tx_skb' field of 'struct mvpp2_tx_queue'
  net: mvpp2: release reference to txq_cpu[] entry after unmapping
  net: mvpp2: handle too large value in mvpp2_rx_time_coal_set()
  net: mvpp2: handle too large value handling in mvpp2_rx_pkts_coal_set()
  net: mvpp2: remove useless arguments in mvpp2_rx_{pkts, time}_coal_set
  ...
2017-02-22 10:15:09 -08:00
Bjorn Helgaas
c4d052ce97 Merge branch 'pci/virtualization' into next
* pci/virtualization:
  PCI: Add ACS quirk for Qualcomm QDF2400 and QDF2432
2017-02-21 15:16:28 -06:00
Bjorn Helgaas
42d87e3ffb Merge branch 'pci/msi' into next
* pci/msi:
  PCI/MSI: Fix msi_desc->affinity memory leak when freeing MSI IRQs
2017-02-21 15:16:22 -06:00
Bjorn Helgaas
2bdd584a75 Merge branch 'pci/enumeration' into next
* pci/enumeration:
  PCI: Sort the list of devices with D3 delay quirk by ID
2017-02-21 15:16:17 -06:00
Bjorn Helgaas
9e38637a08 Merge branch 'pci/host-xilinx' into next
* pci/host-xilinx:
  PCI: xilinx-nwl: Remove mask for messages not supported by AXI
  PCI: xilinx: Configure PCIe MPS settings
2017-02-21 15:16:12 -06:00
Bjorn Helgaas
9d534265bd Merge branch 'pci/host-xgene' into next
* pci/host-xgene:
  PCI: xgene: Configure PCIe MPS settings
  PCI: xgene: Fix double free on init error
2017-02-21 15:16:08 -06:00
Bjorn Helgaas
f08bf55e69 Merge branch 'pci/host-versatile' into next
* pci/host-versatile:
  PCI: versatile: Configure PCIe MPS settings
2017-02-21 15:15:54 -06:00
Bjorn Helgaas
b98a7f7509 Merge branch 'pci/host-thunder' into next
* pci/host-thunder:
  PCI: thunder-pem: Add support for cn81xx and cn83xx SoCs
2017-02-21 15:15:49 -06:00
Bjorn Helgaas
bcea623c65 Merge branch 'pci/host-rockchip' into next
* pci/host-rockchip:
  PCI: rockchip: Set vendor ID from local core config space
  PCI: rockchip: Fix rockchip_pcie_probe() error path to free resource list
  PCI: rockchip: Mark PM functions as __maybe_unused
  PCI: rockchip: Use readl_poll_timeout() instead of open-coding it
  PCI: rockchip: Disable RC's ASPM L0s based on DT "aspm-no-l0s"
  PCI: rockchip: Add system PM support
2017-02-21 15:15:44 -06:00
Bjorn Helgaas
56195e9d1d Merge branch 'pci/host-rcar' into next
* pci/host-rcar:
  PCI: rcar: Use of_device_get_match_data() to simplify probe
  PCI: rcar: Add compatible string for r8a7796
  PCI: rcar: Return -ENODEV from host bridge probe when no card present
2017-02-21 15:15:39 -06:00
Bjorn Helgaas
dda718926c Merge branch 'pci/host-mvebu' into next
* pci/host-mvebu:
  PCI: mvebu: Change delay after reset to the PCIe spec mandated 100ms
  PCI: mvebu: Handle changes to the bridge windows while enabled
2017-02-21 15:15:34 -06:00
Bjorn Helgaas
e2dc4f225b Merge branch 'pci/host-layerscape' into next
* pci/host-layerscape:
  PCI: layerscape: Use of_device_get_match_data() to simplify probe

Conflicts:
	drivers/pci/dwc/pci-layerscape.c
2017-02-21 15:15:21 -06:00
Bjorn Helgaas
68094b4b8d Merge branch 'pci/host-iproc' into next
* pci/host-iproc:
  PCI: Add Broadcom Northstar2 PAXC quirk for device class and MPSS
  PCI: iproc: Configure PCIe MPS settings
  PCI: iproc: Use of_device_get_match_data() to simplify probe
2017-02-21 15:15:05 -06:00
Bjorn Helgaas
e34e38bf89 Merge branch 'pci/host-imx6' into next
* pci/host-imx6:
  PCI: imx6: Fix a typo in error message
  PCI: imx6: Remove LTSSM disable workaround
  PCI: imx6: Remove redundant "Link never came up" message

Conflicts:
	drivers/pci/dwc/pci-imx6.c
2017-02-21 15:14:53 -06:00
Bjorn Helgaas
5dcda98a3b Merge branch 'pci/host-hv' into next
* pci/host-hv:
  PCI: hv: Use device serial number as PCI domain
  PCI: hv: Fix wslot_to_devfn() to fix warnings on device removal
2017-02-21 15:14:31 -06:00
Bjorn Helgaas
d952097158 Merge branch 'pci/host-hisi' into next
* pci/host-hisi:
  PCI: generic: Call pci_fixup_irqs() only on ARM
  PCI: Disable MSI for HiSilicon Hip06/Hip07 Root Ports
  PCI: hisi: Rename config space accessors to remove "acpi"
  PCI: hisi: Add DT almost-ECAM support for Hip06/Hip07 host controllers
  PCI: hisi: Use of_device_get_match_data() to simplify probe

Conflicts:
	drivers/pci/dwc/pcie-hisi.c
2017-02-21 15:14:18 -06:00
Bjorn Helgaas
b2e6d3055d Merge branch 'pci/host-exynos' into next
* pci/host-exynos:
  PCI: exynos: Support the PHY generic framework
  Documentation: binding: Modify the exynos5440 PCIe binding
  phy: phy-exynos-pcie: Add support for Exynos PCIe PHY
  Documentation: samsung-phy: Add exynos-pcie-phy binding
  PCI: exynos: Refactor to make it easier to support other SoCs
  PCI: exynos: Remove duplicated code
  PCI: exynos: Use the bitops BIT() macro to build bitmasks
  PCI: exynos: Remove unnecessary local variables
  PCI: exynos: Replace the *_blk/*_phy/*_elb accessors
  PCI: exynos: Rename all pointer names from "exynos_pcie" to "ep"

Conflicts:
	drivers/pci/dwc/pci-exynos.c
2017-02-21 15:13:30 -06:00
Bjorn Helgaas
1a55761392 Merge branch 'pci/host-altera' into next
* pci/host-altera:
  PCI: altera: Extract TLP completion status correctly
2017-02-21 15:12:18 -06:00
Bjorn Helgaas
3bb0356bb1 Merge branch 'pci/host-designware' into next
* pci/host-designware:
  PCI: dwc: Remove dependency of designware on CONFIG_PCI
  PCI: dwc: Add CONFIG_PCIE_DW_HOST to enable PCI dwc host
  PCI: dwc: Split pcie-designware.c into host and core files
  PCI: dwc: designware: Fix style errors in pcie-designware.c
  PCI: dwc: designware: Parse "num-lanes" property in dw_pcie_setup_rc()
  PCI: dwc: all: Split struct pcie_port into host-only and core structures
  PCI: dwc: designware: Get device pointer at the start of dw_pcie_host_init()
  PCI: dwc: all: Rename cfg_read/cfg_write to read/write
  PCI: dwc: all: Use platform_set_drvdata() to save private data
  PCI: dwc: designware: Move register defines to designware header file
  PCI: dwc: Use PTR_ERR_OR_ZERO to simplify code
  PCI: dra7xx: Group PHY API invocations
  PCI: dra7xx: Enable MSI and legacy interrupts simultaneously
  PCI: dra7xx: Add support to force RC to work in GEN1 mode
  PCI: dra7xx: Simplify probe code with devm_gpiod_get_optional()
  PCI: Move DesignWare IP support to new drivers/pci/dwc/ directory
  PCI: designware: Check for iATU unroll only on platforms that use ATU
2017-02-21 15:12:18 -06:00
Kishon Vijay Abraham I
7a2b3f024b PCI: dwc: Remove dependency of designware on CONFIG_PCI
CONFIG_PCI is used to enable host mode PCI. In preparation for adding
endpoint mode support to designware driver, remove the dependency of
designware on CONFIG_PCI and make only the host-specific part depend on
CONFIG_PCI.

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2017-02-21 15:00:26 -06:00
Kishon Vijay Abraham I
a0560209f1 PCI: dwc: Add CONFIG_PCIE_DW_HOST to enable PCI dwc host
Now that PCI designware host has a separate file, add a new PCIE_DW_HOST
config symbol to select the host-only driver. This will enable to
independently select host support and endpoint support (when it's added).

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2017-02-21 15:00:26 -06:00
Kishon Vijay Abraham I
feb85d9b1c PCI: dwc: Split pcie-designware.c into host and core files
Split pcie-designware.c into pcie-designware-host.c that contains the host
specific parts of the driver and pcie-designware.c that contains the parts
used by both host driver and endpoint driver.

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2017-02-21 15:00:26 -06:00
Kishon Vijay Abraham I
314fc854f5 PCI: dwc: designware: Fix style errors in pcie-designware.c
No functional change. Fix all checkpatch warnings and check errors in
pcie-designware.c

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-By: Joao Pinto <jpinto@synopsys.com>
2017-02-21 15:00:26 -06:00
Kishon Vijay Abraham I
5f334db665 PCI: dwc: designware: Parse "num-lanes" property in dw_pcie_setup_rc()
The "num-lanes" DT property is parsed in dw_pcie_host_init(). However
num-lanes is applicable to both root complex mode and endpoint mode. As a
first step, move the parsing of this property outside dw_pcie_host_init().
This is in preparation for splitting pcie-designware.c to pcie-designware.c
and pcie-designware-host.c

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2017-02-21 15:00:26 -06:00
Kishon Vijay Abraham I
442ec4c04d PCI: dwc: all: Split struct pcie_port into host-only and core structures
Keep only the host-specific members in struct pcie_port and move the common
members (i.e common to both host and endpoint) to struct dw_pcie.  This is
in preparation for adding endpoint mode support to designware driver.

While at that also fix checkpatch warnings.

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
CC: Jingoo Han <jingoohan1@gmail.com>
CC: Richard Zhu <hongxing.zhu@nxp.com>
CC: Lucas Stach <l.stach@pengutronix.de>
CC: Murali Karicheri <m-karicheri2@ti.com>
CC: Minghuan Lian <minghuan.Lian@freescale.com>
CC: Mingkai Hu <mingkai.hu@freescale.com>
CC: Roy Zang <tie-fei.zang@freescale.com>
CC: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
CC: Niklas Cassel <niklas.cassel@axis.com>
CC: Jesper Nilsson <jesper.nilsson@axis.com>
CC: Joao Pinto <Joao.Pinto@synopsys.com>
CC: Zhou Wang <wangzhou1@hisilicon.com>
CC: Gabriele Paoloni <gabriele.paoloni@huawei.com>
CC: Stanimir Varbanov <svarbanov@mm-sol.com>
CC: Pratyush Anand <pratyush.anand@gmail.com>
2017-02-21 15:00:26 -06:00
Kishon Vijay Abraham I
40f67fb2c3 PCI: dwc: designware: Get device pointer at the start of dw_pcie_host_init()
No functional change. Get device pointer at the beginning of
dw_pcie_host_init() instead of getting it all over dw_pcie_host_init().
This is in preparation for splitting struct pcie_port into host and core
structures (once split pcie_port will not have device pointer).

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2017-02-21 15:00:26 -06:00
Kishon Vijay Abraham I
19ce01cc8c PCI: dwc: all: Rename cfg_read/cfg_write to read/write
No functional change. dw_pcie_cfg_read()/dw_pcie_cfg_write() doesn't do
anything specific to access configuration space. It can be just renamed to
dw_pcie_read()/dw_pcie_write() and used to read/write data to dbi space.

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-By: Joao Pinto <jpinto@synopsys.com>
CC: Jingoo Han <jingoohan1@gmail.com>
CC: Murali Karicheri <m-karicheri2@ti.com>
CC: Stanimir Varbanov <svarbanov@mm-sol.com>
CC: Pratyush Anand <pratyush.anand@gmail.com>
2017-02-21 15:00:26 -06:00