Commit Graph

7177 Commits

Author SHA1 Message Date
David S. Miller
d96ff269a0 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
The new route handling in ip_mc_finish_output() from 'net' overlapped
with the new support for returning congestion notifications from BPF
programs.

In order to handle this I had to take the dev_loopback_xmit() calls
out of the switch statement.

The aquantia driver conflicts were simple overlapping changes.

Signed-off-by: David S. Miller <davem@davemloft.net>
2019-06-27 21:06:39 -07:00
Linus Torvalds
b253d5f3ec pci-v5.2-fixes-1
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Merge tag 'pci-v5.2-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

Pull PCI fix from Bjorn Helgaas:
 "If an IOMMU is present, ignore the P2PDMA whitelist we added for v5.2
  because we don't yet know how to support P2PDMA in that case (Logan
  Gunthorpe)"

* tag 'pci-v5.2-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
  PCI/P2PDMA: Ignore root complex whitelist when an IOMMU is present
2019-06-22 09:42:29 -07:00
David S. Miller
92ad6325cb Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Minor SPDX change conflict.

Signed-off-by: David S. Miller <davem@davemloft.net>
2019-06-22 08:59:24 -04:00
Heiner Kallweit
4cfd218855 PCI: let pci_disable_link_state propagate errors
Drivers may rely on pci_disable_link_state() having disabled certain
ASPM link states. If OS can't control ASPM then pci_disable_link_state()
turns into a no-op w/o informing the caller. The driver therefore may
falsely assume the respective ASPM link states are disabled.
Let pci_disable_link_state() propagate errors to the caller, enabling
the caller to react accordingly.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-06-21 22:05:42 -04:00
Logan Gunthorpe
6dbbd053e6 PCI/P2PDMA: Ignore root complex whitelist when an IOMMU is present
Presently, there is no path to DMA map P2PDMA memory, so if a TLP targeting
this memory hits the root complex and an IOMMU is present, the IOMMU will
reject the transaction, even if the RC would support P2PDMA.

So until the kernel knows to map these DMA addresses in the IOMMU, we
should not enable the whitelist when an IOMMU is present.

Link: https://lore.kernel.org/linux-pci/20190522201252.2997-1-logang@deltatee.com/
Fixes: 0f97da8310 ("PCI/P2PDMA: Allow P2P DMA between any devices under AMD ZEN Root Complex")
Signed-off-by: Logan Gunthorpe <logang@deltatee.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Cc: Christoph Hellwig <hch@lst.de>
2019-06-19 16:43:42 -05:00
Linus Torvalds
abf02e2964 Power management fix for 5.2-rc6
Prevent PCI bridges in general (and PCIe ports in particular)
 from being put into low-power states during system-wide suspend
 transitions if there are any devices in D0 below them and refine
 the handling of PCI devices in D0 during suspend-to-idle cycles.
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Merge tag 'pm-5.2-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull power management fix from Rafael Wysocki:
 "Prevent PCI bridges in general (and PCIe ports in particular) from
  being put into low-power states during system-wide suspend transitions
  if there are any devices in D0 below them and refine the handling of
  PCI devices in D0 during suspend-to-idle cycles"

* tag 'pm-5.2-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  PCI: PM: Skip devices in D0 for suspend-to-idle
2019-06-19 11:44:04 -07:00
Dan Williams
50f44ee724 mm/devm_memremap_pages: fix final page put race
Logan noticed that devm_memremap_pages_release() kills the percpu_ref
drops all the page references that were acquired at init and then
immediately proceeds to unplug, arch_remove_memory(), the backing pages
for the pagemap.  If for some reason device shutdown actually collides
with a busy / elevated-ref-count page then arch_remove_memory() should
be deferred until after that reference is dropped.

As it stands the "wait for last page ref drop" happens *after*
devm_memremap_pages_release() returns, which is obviously too late and
can lead to crashes.

Fix this situation by assigning the responsibility to wait for the
percpu_ref to go idle to devm_memremap_pages() with a new ->cleanup()
callback.  Implement the new cleanup callback for all
devm_memremap_pages() users: pmem, devdax, hmm, and p2pdma.

Link: http://lkml.kernel.org/r/155727339156.292046.5432007428235387859.stgit@dwillia2-desk3.amr.corp.intel.com
Fixes: 41e94a8513 ("add devm_memremap_pages")
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Reported-by: Logan Gunthorpe <logang@deltatee.com>
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Reviewed-by: Logan Gunthorpe <logang@deltatee.com>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: "Jérôme Glisse" <jglisse@redhat.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: "Rafael J. Wysocki" <rafael@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-06-13 17:34:56 -10:00
Dan Williams
1570175abd PCI/P2PDMA: track pgmap references per resource, not globally
In preparation for fixing a race between devm_memremap_pages_release()
and the final put of a page from the device-page-map, allocate a
percpu-ref per p2pdma resource mapping.

Link: http://lkml.kernel.org/r/155727338646.292046.9922678317501435597.stgit@dwillia2-desk3.amr.corp.intel.com
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Reviewed-by: Logan Gunthorpe <logang@deltatee.com>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: "Jérôme Glisse" <jglisse@redhat.com>
Cc: "Rafael J. Wysocki" <rafael@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-06-13 17:34:56 -10:00
Dan Williams
e615a19121 PCI/P2PDMA: fix the gen_pool_add_virt() failure path
The pci_p2pdma_add_resource() implementation immediately frees the pgmap
if gen_pool_add_virt() fails.  However, that means that when @dev
triggers a devres release devm_memremap_pages_release() will crash
trying to access the freed @pgmap.

Use the new devm_memunmap_pages() to manually free the mapping in the
error path.

Link: http://lkml.kernel.org/r/155727337603.292046.13101332703665246702.stgit@dwillia2-desk3.amr.corp.intel.com
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Fixes: 52916982af ("PCI/P2PDMA: Support peer-to-peer memory")
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Logan Gunthorpe <logang@deltatee.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: "Jérôme Glisse" <jglisse@redhat.com>
Cc: "Rafael J. Wysocki" <rafael@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-06-13 17:34:56 -10:00
Rafael J. Wysocki
3e26c5feed PCI: PM: Skip devices in D0 for suspend-to-idle
Commit d491f2b752 ("PCI: PM: Avoid possible suspend-to-idle issue")
attempted to avoid a problem with devices whose drivers want them to
stay in D0 over suspend-to-idle and resume, but it did not go as far
as it should with that.

Namely, first of all, the power state of a PCI bridge with a
downstream device in D0 must be D0 (based on the PCI PM spec r1.2,
sec 6, table 6-1, if the bridge is not in D0, there can be no PCI
transactions on its secondary bus), but that is not actively enforced
during system-wide PM transitions, so use the skip_bus_pm flag
introduced by commit d491f2b752 for that.

Second, the configuration of devices left in D0 (whatever the reason)
during suspend-to-idle need not be changed and attempting to put them
into D0 again by force is pointless, so explicitly avoid doing that.

Fixes: d491f2b752 ("PCI: PM: Avoid possible suspend-to-idle issue")
Reported-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Tested-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
2019-06-14 00:03:27 +02:00
Rafael J. Wysocki
d491f2b752 PCI: PM: Avoid possible suspend-to-idle issue
If a PCI driver leaves the device handled by it in D0 and calls
pci_save_state() on the device in its ->suspend() or ->suspend_late()
callback, it can expect the device to stay in D0 over the whole
s2idle cycle.  However, that may not be the case if there is a
spurious wakeup while the system is suspended, because in that case
pci_pm_suspend_noirq() will run again after pci_pm_resume_noirq()
which calls pci_restore_state(), via pci_pm_default_resume_early(),
so state_saved is cleared and the second iteration of
pci_pm_suspend_noirq() will invoke pci_prepare_to_sleep() which
may change the power state of the device.

To avoid that, add a new internal flag, skip_bus_pm, that will be set
by pci_pm_suspend_noirq() when it runs for the first time during the
given system suspend-resume cycle if the state of the device has
been saved already and the device is still in D0.  Setting that flag
will cause the next iterations of pci_pm_suspend_noirq() to set
state_saved for pci_pm_resume_noirq(), so that it always restores the
device state from the originally saved data, and avoid calling
pci_prepare_to_sleep() for the device.

Fixes: 33e4f80ee6 ("ACPI / PM: Ignore spurious SCI wakeups from suspend-to-idle")
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Keith Busch <keith.busch@intel.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2019-05-27 10:55:08 +02:00
Rafael J. Wysocki
9a51c6b1f9 ACPI/PCI: PM: Add missing wakeup.flags.valid checks
Both acpi_pci_need_resume() and acpi_dev_needs_resume() check if the
current ACPI wakeup configuration of the device matches what is
expected as far as system wakeup from sleep states is concerned, as
reflected by the device_may_wakeup() return value for the device.

However, they only should do that if wakeup.flags.valid is set for
the device's ACPI companion, because otherwise the wakeup.prepare_count
value for it is meaningless.

Add the missing wakeup.flags.valid checks to these functions.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2019-05-27 10:51:06 +02:00
Linus Torvalds
414147d99b pci-v5.2-changes
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Merge tag 'pci-v5.2-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

Pull PCI updates from Bjorn Helgaas:
 "Enumeration changes:

   - Add _HPX Type 3 settings support, which gives firmware more
     influence over device configuration (Alexandru Gagniuc)

   - Support fixed bus numbers from bridge Enhanced Allocation
     capabilities (Subbaraya Sundeep)

   - Add "external-facing" DT property to identify cases where we
     require IOMMU protection against untrusted devices (Jean-Philippe
     Brucker)

   - Enable PCIe services for host controller drivers that use managed
     host bridge alloc (Jean-Philippe Brucker)

   - Log PCIe port service messages with pci_dev, not the pcie_device
     (Frederick Lawler)

   - Convert pciehp from pciehp_debug module parameter to generic
     dynamic debug (Frederick Lawler)

  Peer-to-peer DMA:

   - Add whitelist of Root Complexes that support peer-to-peer DMA
     between Root Ports (Christian König)

  Native controller drivers:

   - Add PCI host bridge DMA ranges for bridges that can't DMA
     everywhere, e.g., iProc (Srinath Mannam)

   - Add Amazon Annapurna Labs PCIe host controller driver (Jonathan
     Chocron)

   - Fix Tegra MSI target allocation so DMA doesn't generate unwanted
     MSIs (Vidya Sagar)

   - Fix of_node reference leaks (Wen Yang)

   - Fix Hyper-V module unload & device removal issues (Dexuan Cui)

   - Cleanup R-Car driver (Marek Vasut)

   - Cleanup Keystone driver (Kishon Vijay Abraham I)

   - Cleanup i.MX6 driver (Andrey Smirnov)

  Significant bug fixes:

   - Reset Lenovo ThinkPad P50 GPU so nouveau works after reboot (Lyude
     Paul)

   - Fix Switchtec firmware update performance issue (Wesley Sheng)

   - Work around Pericom switch link retraining erratum (Stefan Mätje)"

* tag 'pci-v5.2-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (141 commits)
  MAINTAINERS: Add Karthikeyan Mitran and Hou Zhiqiang for Mobiveil PCI
  PCI: pciehp: Remove pointless MY_NAME definition
  PCI: pciehp: Remove pointless PCIE_MODULE_NAME definition
  PCI: pciehp: Remove unused dbg/err/info/warn() wrappers
  PCI: pciehp: Log messages with pci_dev, not pcie_device
  PCI: pciehp: Replace pciehp_debug module param with dyndbg
  PCI: pciehp: Remove pciehp_debug uses
  PCI/AER: Log messages with pci_dev, not pcie_device
  PCI/DPC: Log messages with pci_dev, not pcie_device
  PCI/PME: Replace dev_printk(KERN_DEBUG) with dev_info()
  PCI/AER: Replace dev_printk(KERN_DEBUG) with dev_info()
  PCI: Replace dev_printk(KERN_DEBUG) with dev_info(), etc
  PCI: Replace printk(KERN_INFO) with pr_info(), etc
  PCI: Use dev_printk() when possible
  PCI: Cleanup setup-bus.c comments and whitespace
  PCI: imx6: Allow asynchronous probing
  PCI: dwc: Save root bus for driver remove hooks
  PCI: dwc: Use devm_pci_alloc_host_bridge() to simplify code
  PCI: dwc: Free MSI in dw_pcie_host_init() error path
  PCI: dwc: Free MSI IRQ page in dw_pcie_free_msi()
  ...
2019-05-14 10:30:10 -07:00
Bjorn Helgaas
c7a1c2bbb6 Merge branch 'pci/trivial'
- Cleanup PCI register definitions, typos, etc (Bjorn Helgaas)

  - Remove unnecessary use of user-space types in CPER (Bjorn Helgaas)

  - Cleanup setup-bus.c comments & whitespace (Nicholas Johnson)

* pci/trivial:
  PCI: Cleanup setup-bus.c comments and whitespace
  CPER: Remove unnecessary use of user-space types
  CPER: Add UEFI spec references
  PCI: Fix comment typos
  PCI: Cleanup register definition width and whitespace

# Conflicts:
#	drivers/pci/pci.c
#	drivers/pci/setup-bus.c
2019-05-13 18:34:48 -05:00
Bjorn Helgaas
f8587c80c6 Merge branch 'pci/printk-portdrv'
- Change some desirable KERN_DEBUG messages to KERN_INFO/KERN_ERR
    (Frederick Lawler)

  - Log PCIe port service messages with pci_dev, not the pcie_device
    (Frederick Lawler)

  - Convert pciehp from pciehp_debug module parameter to generic dynamic
    debug (Frederick Lawler)

* pci/printk-portdrv:
  PCI: pciehp: Remove pointless MY_NAME definition
  PCI: pciehp: Remove pointless PCIE_MODULE_NAME definition
  PCI: pciehp: Remove unused dbg/err/info/warn() wrappers
  PCI: pciehp: Log messages with pci_dev, not pcie_device
  PCI: pciehp: Replace pciehp_debug module param with dyndbg
  PCI: pciehp: Remove pciehp_debug uses
  PCI/AER: Log messages with pci_dev, not pcie_device
  PCI/DPC: Log messages with pci_dev, not pcie_device
  PCI/PME: Replace dev_printk(KERN_DEBUG) with dev_info()
  PCI/AER: Replace dev_printk(KERN_DEBUG) with dev_info()
2019-05-13 18:34:47 -05:00
Bjorn Helgaas
192415f498 Merge branch 'pci/printk'
* pci/printk:
  PCI: Replace dev_printk(KERN_DEBUG) with dev_info(), etc
  PCI: Replace printk(KERN_INFO) with pr_info(), etc
  PCI: Use dev_printk() when possible
2019-05-13 18:34:46 -05:00
Bjorn Helgaas
f2e9468316 Merge branch 'pci/iova-dma-ranges'
- Add list of legal DMA address ranges to PCI host bridge (Srinath
    Mannam)

  - Reserve inaccessible DMA ranges so IOMMU doesn't allocate them (Srinath
    Mannam)

  - Parse iProc DT dma-ranges to learn what PCI devices can reach via DMA
    (Srinath Mannam)

* pci/iova-dma-ranges:
  PCI: iproc: Add sorted dma ranges resource entries to host bridge
  iommu/dma: Reserve IOVA for PCIe inaccessible DMA address
  PCI: Add dma_ranges window list

# Conflicts:
#	drivers/pci/probe.c
2019-05-13 18:34:45 -05:00
Bjorn Helgaas
ee6df38da8 Merge branch 'remotes/lorenzo/pci/misc'
- Exit pcitest with error code when test fails (Jean-Jacques Hiblot)

  - Fix leaked of_node references in dra7xx, uniphier, layerscape,
    rockchip, aardvark, iproc, mediatek, rpadlpar (Wen Yang)

  - Fix pcitest "help" option parsing (Kishon Vijay Abraham I)

  - Fix Makefile bug that inadvertently removes pcitest.sh (Kishon Vijay
    Abraham I)

  - Check for alloc_workqueue() failure in endpoint test driver (Kangjie
    Lu)

* remotes/lorenzo/pci/misc:
  PCI: endpoint: Fix a potential NULL pointer dereference
  tools: PCI: Handle pcitest.sh independently from pcitest
  tools: PCI: Add 'h' in optstring of getopt()
  PCI: mediatek: Fix a leaked reference by adding missing of_node_put()
  PCI: iproc: Fix a leaked reference by adding missing of_node_put()
  PCI: aardvark: Fix a leaked reference by adding missing of_node_put()
  PCI: rockchip: Fix a leaked reference by adding missing of_node_put()
  PCI: dwc: layerscape: Fix a leaked reference by adding missing of_node_put()
  PCI: uniphier: Fix a leaked reference by adding missing of_node_put()
  PCI: dwc: pci-dra7xx: Fix a leaked reference by adding missing of_node_put()
  tools: PCI: Exit with error code when test fails
2019-05-13 18:34:44 -05:00
Bjorn Helgaas
ed0eaf3205 Merge branch 'remotes/lorenzo/pci/xilinx'
- Check for __get_free_pages() failure in xilinx (Kangjie Lu)

* remotes/lorenzo/pci/xilinx:
  PCI: xilinx: Check for __get_free_pages() failure
2019-05-13 18:34:44 -05:00
Bjorn Helgaas
cdf4315502 Merge branch 'remotes/lorenzo/pci/tegra'
- Use DMA-API to get tegra MSI address to prevent device DMA from
    generating unwanted MSIs (Vidya Sagar)

* remotes/lorenzo/pci/tegra:
  PCI: tegra: Use the DMA-API to get the MSI address
2019-05-13 18:34:43 -05:00
Bjorn Helgaas
673525c5c2 Merge branch 'remotes/lorenzo/pci/rockchip'
- Fix rockchip bitwise operations that overflow type (Colin Ian King)

* remotes/lorenzo/pci/rockchip:
  PCI: rockchip: Fix rockchip_pcie_ep_assert_intx() bitwise operations
2019-05-13 18:34:43 -05:00
Bjorn Helgaas
bac9789e53 Merge branch 'remotes/lorenzo/pci/rcar'
- Use BIT() when appropriate in rcar (Marek Vasut)

  - Use u32 to match rcar hardware register widths (Marek Vasut)

  - Use BITS_PER_BYTE when appropriate in rcar (Marek Vasut)

  - Remove unnecessary casts in rcar (Marek Vasut)

  - Fix 64-bit MSI target addresses in rcar (Marek Vasut)

  - Check for __get_free_pages() failure in rcar (Kangjie Lu)

  - Fix shadowed rcar "irq" variable (Wolfram Sang)

* remotes/lorenzo/pci/rcar:
  PCI: rcar: Do not shadow the 'irq' variable
  PCI: rcar: Fix a potential NULL pointer dereference
  PCI: rcar: Fix 64bit MSI message address handling
  PCI: rcar: Clean up debug messages
  PCI: rcar: Replace (8 * n) with (BITS_PER_BYTE * n)
  PCI: rcar: Replace various variable types with unsigned ones for register values
  PCI: rcar: Replace unsigned long with u32/unsigned int in register accessors
  PCI: rcar: Clean up remaining macros defining bits

# Conflicts:
#	drivers/pci/controller/pcie-rcar.c
2019-05-13 18:34:42 -05:00
Bjorn Helgaas
fb8a85fabd Merge branch 'remotes/lorenzo/pci/mediatek'
- Make mediatek clocks optional, not required (Chunfeng Yun)

  - Remove unused mediatek mt2712 "num-lanes" DT property (Honghui Zhang)

* remotes/lorenzo/pci/mediatek:
  arm64: dts: mt2712: Remove un-used property for PCIe
  PCI: mediatek: Get optional clocks with devm_clk_get_optional()
2019-05-13 18:34:41 -05:00
Bjorn Helgaas
0b8439d374 Merge branch 'remotes/lorenzo/pci/keystone'
- Move IRQ register address computation inside macros (Kishon Vijay
    Abraham I)

  - Separate legacy IRQ and MSI configuration (Kishon Vijay Abraham I)

  - Use hwirq, not virq, to get MSI IRQ number offset (Kishon Vijay Abraham
    I)

  - Squash ks_pcie_handle_msi_irq() into ks_pcie_msi_irq_handler() (Kishon
    Vijay Abraham I)

  - Add dwc support for platforms with custom MSI controllers (Kishon Vijay
    Abraham I)

  - Add keystone-specific MSI controller (Kishon Vijay Abraham I)

  - Remove dwc host_ops previously used for keystone-specific MSI (Kishon
    Vijay Abraham I)

  - Skip dwc default MSI init if platform has custom MSI controller (Kishon
    Vijay Abraham I)

  - Implement .start_link() and .stop_link() for keystone endpoint support
    (Kishon Vijay Abraham I)

  - Add keystone "reg-names" DT binding (Kishon Vijay Abraham I)

  - Squash ks_pcie_dw_host_init() into ks_pcie_add_pcie_port() (Kishon
    Vijay Abraham I)

  - Get keystone register resources from DT by name, not index (Kishon
    Vijay Abraham I)

  - Get DT resources in .probe() to prepare for endpoint support (Kishon
    Vijay Abraham I)

  - Add "ti,syscon-pcie-mode" DT property for PCIe mode configuration
    (Kishon Vijay Abraham I)

  - Explicitly set keystone to host mode (Kishon Vijay Abraham I)

  - Document DT "atu" reg-names requirement for DesignWare core >= 4.80
    (Kishon Vijay Abraham I)

  - Enable dwc iATU unroll for endpoint mode as well as host mode (Kishon
    Vijay Abraham I)

  - Add dwc "version" to identify core >= 4.80 for ATU programming (Kishon
    Vijay Abraham I)

  - Don't build ARM32-specific keystone code on ARM64 (Kishon Vijay Abraham
    I)

  - Add DT binding for keystone PCIe RC in AM654 SoC (Kishon Vijay Abraham
    I)

  - Add keystone support for AM654 SoC PCIe RC (Kishon Vijay Abraham I)

  - Reset keystone PHYs before enabling them (Kishon Vijay Abraham I)

  - Make of_pci_get_max_link_speed() available to endpoint drivers as well
    as host drivers (Kishon Vijay Abraham I)

  - Add keystone support for DT "max-link-speed" property (Kishon Vijay
    Abraham I)

  - Add endpoint library support for BAR buffer alignment (Kishon Vijay
    Abraham I)

  - Make all dw_pcie_ep_ops structs const (Kishon Vijay Abraham I)

  - Fix fencepost error in dw_pcie_ep_find_capability() (Kishon Vijay
    Abraham I)

  - Add dwc hooks for dbi/dbi2 that share the same address space (Kishon
    Vijay Abraham I)

  - Add keystone support for TI AM654x in endpoint mode (Kishon Vijay
    Abraham I)

  - Configure designware endpoints to advertise smallest resizable BAR
    (1MB) (Kishon Vijay Abraham I)

  - Align designware endpoint ATU windows for raising MSIs (Kishon Vijay
    Abraham I)

  - Add endpoint test support for TI AM654x (Kishon Vijay Abraham I)

  - Fix endpoint test test_reg_bar issue (Kishon Vijay Abraham I)

* remotes/lorenzo/pci/keystone:
  misc: pci_endpoint_test: Fix test_reg_bar to be updated in pci_endpoint_test
  misc: pci_endpoint_test: Add support to test PCI EP in AM654x
  PCI: designware-ep: Use aligned ATU window for raising MSI interrupts
  PCI: designware-ep: Configure Resizable BAR cap to advertise the smallest size
  PCI: keystone: Add support for PCIe EP in AM654x Platforms
  dt-bindings: PCI: Add PCI EP DT binding documentation for AM654
  PCI: dwc: Add callbacks for accessing dbi2 address space
  PCI: dwc: Fix dw_pcie_ep_find_capability() to return correct capability offset
  PCI: dwc: Add const qualifier to struct dw_pcie_ep_ops
  PCI: endpoint: Add support to specify alignment for buffers allocated to BARs
  PCI: keystone: Add support to set the max link speed from DT
  PCI: OF: Allow of_pci_get_max_link_speed() to be used by PCI Endpoint drivers
  PCI: keystone: Invoke phy_reset() API before enabling PHY
  PCI: keystone: Add support for PCIe RC in AM654x Platforms
  dt-bindings: PCI: Add PCI RC DT binding documentation for AM654
  PCI: keystone: Prevent ARM32 specific code to be compiled for ARM64
  PCI: dwc: Fix ATU identification for designware version >= 4.80
  PCI: dwc: Enable iATU unroll for endpoint too
  dt-bindings: PCI: Document "atu" reg-names
  PCI: keystone: Explicitly set the PCIe mode
  dt-bindings: PCI: Add dt-binding to configure PCIe mode
  PCI: keystone: Move resources initialization to prepare for EP support
  PCI: keystone: Use platform_get_resource_byname() to get memory resources
  PCI: keystone: Perform host initialization in a single function
  dt-bindings: PCI: keystone: Add "reg-names" binding information
  PCI: keystone: Cleanup error_irq configuration
  PCI: keystone: Add start_link()/stop_link() dw_pcie_ops
  PCI: dwc: Remove default MSI initialization for platform specific MSI chips
  PCI: dwc: Remove Keystone specific dw_pcie_host_ops
  PCI: keystone: Use Keystone specific msi_irq_chip
  PCI: dwc: Add support to use non default msi_irq_chip
  PCI: keystone: Cleanup ks_pcie_msi_irq_handler()
  PCI: keystone: Use hwirq to get the MSI IRQ number offset
  PCI: keystone: Add separate functions for configuring MSI and legacy interrupt
  PCI: keystone: Cleanup interrupt related macros

# Conflicts:
#	drivers/pci/controller/dwc/pcie-designware.h
2019-05-13 18:34:41 -05:00
Bjorn Helgaas
b138f67d7b Merge branch 'remotes/lorenzo/pci/iproc'
- Work around iproc CRS completion issues (Srinath Mannam)

  - Allow smaller iproc outbound windows so driver can work on 32-bit
    systems (Srinath Mannam)

  - Use iproc-specific config read for PAXBv2 (not PAXB) (Srinath Mannam)

* remotes/lorenzo/pci/iproc:
  PCI: iproc: Enable iProc config read for PAXBv2
  PCI: iproc: Allow outbound configuration for 32-bit I/O region
  PCI: iproc: Add CRS check in config read
2019-05-13 18:34:39 -05:00
Bjorn Helgaas
5349abcf8e Merge branch 'remotes/lorenzo/pci/imx'
- Simplify imx7d_pcie_wait_for_phy_pll_lock() by using
    regmap_read_poll_timeout() (Andrey Smirnov)

  - Drop imx6_pcie_wait_for_link() in favor of the more generic
    dw_pcie_wait_for_link() (Andrey Smirnov)

  - Return -ETIMEDOUT instead of -EINVAL from
    imx6_pcie_wait_for_speed_change() (Andrey Smirnov)

  - Remove unused PCIE_PL_PFLR_* constants from imx6 (Andrey Smirnov)

  - Use shared PHY debug register definitions in imx6 (Andrey Smirnov)

  - Use BIT() in imx6 (Andrey Smirnov)

  - Simplify imx6 PHY bit operations (Andrey Smirnov)

  - Simplify imx6 pcie_phy_poll_ack() (Andrey Smirnov)

  - Use data types that match actual imx6 PHY register width (Andrey
    Smirnov)

  - Mark imx6 suspend support with drvdata flags instead of checking
    variants (Andrey Smirnov)

  - Sleep instead of delay in imx6_pcie_enable_ref_clk() (Andrey Smirnov)

* remotes/lorenzo/pci/imx:
  PCI: imx6: Use usleep_range() in imx6_pcie_enable_ref_clk()
  PCI: imx6: Use flags to indicate support for suspend
  PCI: imx6: Restrict PHY register data to 16-bit
  PCI: imx6: Simplify pcie_phy_poll_ack()
  PCI: imx6: Simplify bit operations in PHY functions
  PCI: imx6: Make use of BIT() in constant definitions
  PCI: dwc: imx6: Share PHY debug register definitions
  PCI: imx6: Remove PCIE_PL_PFLR_* constants
  PCI: imx6: Return -ETIMEOUT from imx6_pcie_wait_for_speed_change()
  PCI: imx6: Drop imx6_pcie_wait_for_link()
  PCI: imx6: Simplify imx7d_pcie_wait_for_phy_pll_lock()
2019-05-13 18:34:39 -05:00
Bjorn Helgaas
29fa3bbd6c Merge branch 'pci/dwc'
- Use generic config space reader in qcom (Marc Gonzalez)

  - Stop calling IRQ handler cleanup in dwc driver for invalid MSI IRQs
    (Jisheng Zhang)

  - Free dwc MSI target page when freeing MSI (Jisheng Zhang)

  - Fix dwc MSI leak in host init error path (Jisheng Zhang)

  - Use managed host bridge alloc to simplify dwc (Jisheng Zhang)

  - Save dwc root pci_bus pointer for use by .remove() methods (Jisheng
    Zhang)

  - Allow imx6 asynchronous probing (Lucas Stach)

* pci/dwc:
  PCI: imx6: Allow asynchronous probing
  PCI: dwc: Save root bus for driver remove hooks
  PCI: dwc: Use devm_pci_alloc_host_bridge() to simplify code
  PCI: dwc: Free MSI in dw_pcie_host_init() error path
  PCI: dwc: Free MSI IRQ page in dw_pcie_free_msi()
  PCI: dwc: Fix dw_pcie_free_msi() if msi_irq is invalid
  PCI: qcom: Use default config space read function
2019-05-13 18:34:38 -05:00
Bjorn Helgaas
4014eb8b61 Merge branch 'remotes/lorenzo/pci/controller-fixes'
- Restore R-Car PCIe link early in resume (Kazufumi Ikeda)

  - Fix Hyper-V PCI ejection memory leak (Dexuan Cui)

  - Cleanup Hyper-V PCI slots on module unload (Dexuan Cui)

  - Cleanup Hyper-V PCI slot on device removal to address a race (Dexuan
    Cui)

* remotes/lorenzo/pci/controller-fixes:
  PCI: hv: Add pci_destroy_slot() in pci_devices_present_work(), if necessary
  PCI: hv: Add hv_pci_remove_slots() when we unload the driver
  PCI: hv: Fix a memory leak in hv_eject_device_work()
  PCI: rcar: Add the initialization of PCIe link in resume_noirq()
2019-05-13 18:34:37 -05:00
Bjorn Helgaas
83d8235282 Merge branch 'pci/host/al'
- Add Amazon Annapurna Labs PCIe host controller driver (Jonathan
    Chocron)

* pci/host/al:
  PCI: al: Add Amazon Annapurna Labs PCIe host controller driver
2019-05-13 18:34:36 -05:00
Bjorn Helgaas
c711a84af0 Merge branch 'pci/virtualization'
- Mark ATS on AMD Stoney Radeon R7 GPU broken to avoid IOMMU issues
    (Nikolai Kostrigin)

  - Mark Atheros AR9462 to avoid bus reset that locks up host machine
    (James Prestwood)

* pci/virtualization:
  PCI: Mark Atheros AR9462 to avoid bus reset
  PCI: Mark AMD Stoney Radeon R7 GPU ATS as broken
2019-05-13 18:34:35 -05:00
Bjorn Helgaas
da33ae0129 Merge branch 'pci/switchtec'
- Support all 255 PFF ports in switchtec driver (Wesley Sheng)

  - Fix unintentional switchtec MRPC event masking that degraded firmware
    update speed (Wesley Sheng)

* pci/switchtec:
  switchtec: Fix unintended mask of MRPC event
  switchtec: Increase PFF limit from 48 to 255
2019-05-13 18:34:35 -05:00
Bjorn Helgaas
db9d639fa1 Merge branch 'pci/portdrv'
- Disable Link Management interrupt during suspend to prevent immediate
    wakeup (Mika Westerberg)

* pci/portdrv:
  PCI/LINK: Disable bandwidth notification interrupt during suspend
2019-05-13 18:34:34 -05:00
Bjorn Helgaas
292c939654 Merge branch 'pci/peer-to-peer'
- Add a whitelist of Root Complexes known to support peer-to-peer DMA
    between Root Ports (Christian König)

* pci/peer-to-peer:
  PCI/P2PDMA: Allow P2P DMA between any devices under AMD ZEN Root Complex
2019-05-13 18:34:33 -05:00
Bjorn Helgaas
09fdd75c18 Merge branch 'pci/misc'
- Mark expected switch fall-throughs (Gustavo A. R. Silva)

  - Remove unused pci_request_region_exclusive() (Johannes Thumshirn)

  - Fix x86 PCI IRQ routing table memory leak (Wenwen Wang)

  - Reset Lenovo ThinkPad P50 if firmware didn't do it on reboot (Lyude
    Paul)

  - Add and use pci_dev_id() helper to simplify PCI_DEVID() usage (touches
    several places outside drivers/pci/) (Heiner Kallweit)

  - Transition Mobiveil PCI maintenance to Karthikeyan M and Hou Zhiqiang
    (Subrahmanya Lingappa)

* pci/misc:
  MAINTAINERS: Add Karthikeyan Mitran and Hou Zhiqiang for Mobiveil PCI
  platform/chrome: chromeos_laptop: use pci_dev_id() helper
  stmmac: pci: Use pci_dev_id() helper
  iommu/vt-d: Use pci_dev_id() helper
  iommu/amd: Use pci_dev_id() helper
  drm/amdkfd: Use pci_dev_id() helper
  powerpc/powernv/npu: Use pci_dev_id() helper
  r8169: use pci_dev_id() helper
  PCI: Add pci_dev_id() helper
  PCI: Reset Lenovo ThinkPad P50 nvgpu at boot if necessary
  x86/PCI: Fix PCI IRQ routing table memory leak
  PCI: Remove unused pci_request_region_exclusive()
  PCI: Mark expected switch fall-throughs
2019-05-13 18:34:32 -05:00
Bjorn Helgaas
33987fd167 Merge branch 'pci/msi'
- Remove unused mask_msi_irq(), unmask_msi_irq(), write_msi_msg(),
    __write_msi_msg() (Bjorn Helgaas)

* pci/msi:
  PCI/MSI: Remove unused mask_msi_irq() and unmask_msi_irq()
  PCI/MSI: Remove unused __write_msi_msg() and write_msi_msg()
2019-05-13 18:34:31 -05:00
Bjorn Helgaas
3ea6f739dc Merge branch 'pci/hotplug'
- Fix RPA and RPA DLPAR refcount issues (Tyrel Datwyler)

  - Stop exporting pci_get_hp_params() (Alexandru Gagniuc)

  - Simplify _HPP, _HPX parsing (Alexandru Gagniuc)

  - Add support for _HPX Type 3 settings (Alexandru Gagniuc)

  - Tell firmware we support _HPX Type 3 via _OSC (Alexandru Gagniuc)

* pci/hotplug:
  PCI/ACPI: Advertise _HPX Type 3 support via _OSC
  PCI/ACPI: Implement _HPX Type 3 Setting Record
  PCI/ACPI: Remove the need for 'struct hotplug_params'
  PCI/ACPI: Do not export pci_get_hp_params()
  PCI: rpaphp: Get/put device node reference during slot alloc/dealloc
  PCI: rpadlpar: Fix leaked device_node references in add/remove paths
2019-05-13 18:34:31 -05:00
Bjorn Helgaas
178901bf6a Merge branch 'pci/enumeration'
- Enable PCIe services for host controller drivers that use managed host
    bridge alloc (Jean-Philippe Brucker)

  - Add quirk to clear PCIe Retrain Link bit to work around Pericom bridge
    erratum (Stefan Mätje)

  - Add "external-facing" DT property to identify cases where we require
    IOMMU protection from untrusted devices (Jean-Philippe Brucker)

  - Support fixed bus numbers from bridge Enhanced Allocation capabilities
    (Subbaraya Sundeep)

* pci/enumeration:
  PCI: Assign bus numbers present in EA capability for bridges
  PCI: OF: Support "external-facing" property
  dt-bindings: Add "external-facing" PCIe port property
  PCI: Rework pcie_retrain_link() wait loop
  PCI: Work around Pericom PCIe-to-PCI bridge Retrain Link erratum
  PCI: Factor out pcie_retrain_link() function
  PCI: Init PCIe feature bits for managed host bridge alloc
2019-05-13 18:34:30 -05:00
Bjorn Helgaas
e07ca82a5f PCI: pciehp: Remove pointless MY_NAME definition
MY_NAME is only used once and offers no benefit, so remove it.

Link: https://lore.kernel.org/lkml/20190509141456.223614-11-helgaas@kernel.org
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Keith Busch <keith.busch@intel.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
2019-05-09 16:45:21 -05:00
Bjorn Helgaas
b498b6872d PCI: pciehp: Remove pointless PCIE_MODULE_NAME definition
PCIE_MODULE_NAME is only used once and offers no benefit, so remove it.

Link: https://lore.kernel.org/lkml/20190509141456.223614-10-helgaas@kernel.org
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Keith Busch <keith.busch@intel.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
2019-05-09 16:45:21 -05:00
Frederick Lawler
742ee16bc3 PCI: pciehp: Remove unused dbg/err/info/warn() wrappers
Replace the last uses of dbg() with the equivalent pr_debug(), then remove
unused dbg(), err(), info(), and warn() wrappers.

Link: https://lore.kernel.org/lkml/20190509141456.223614-9-helgaas@kernel.org
Signed-off-by: Frederick Lawler <fred@fredlawl.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Keith Busch <keith.busch@intel.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
2019-05-09 16:45:20 -05:00
Frederick Lawler
94dbc9562e PCI: pciehp: Log messages with pci_dev, not pcie_device
Log messages with pci_dev, not pcie_device.  Factor out common message
prefixes with dev_fmt().

Example output change:

  - pciehp 0000:00:06.0:pcie004: Slot(0) Powering on due to button press
  + pcieport 0000:00:06.0: pciehp: Slot(0) Powering on due to button press

Link: https://lore.kernel.org/lkml/20190509141456.223614-8-helgaas@kernel.org
Signed-off-by: Frederick Lawler <fred@fredlawl.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Keith Busch <keith.busch@intel.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
2019-05-09 16:45:20 -05:00
Frederick Lawler
017124725c PCI: pciehp: Replace pciehp_debug module param with dyndbg
Previously pciehp debug messages were enabled by the pciehp_debug module
parameter, e.g., by booting with this kernel command line option:

  pciehp.pciehp_debug=1

Convert this mechanism to use the generic dynamic debug (dyndbg) feature.
After this commit, pciehp debug messages are enabled by building the kernel
with CONFIG_DYNAMIC_DEBUG=y and booting with this command line option:

  dyndbg="file pciehp* +p"

The dyndbg facility is much more flexible: messages can be enabled at boot-
or run-time based on the file name, function name, line number, message
test, etc.  See Documentation/admin-guide/dynamic-debug-howto.rst for more
details.

Link: https://lore.kernel.org/lkml/20190509141456.223614-7-helgaas@kernel.org
Signed-off-by: Frederick Lawler <fred@fredlawl.com>
[bhelgaas: commit log, comment, remove pciehp_debug parameter]
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Keith Busch <keith.busch@intel.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
2019-05-09 16:45:20 -05:00
Bjorn Helgaas
7e696b8ae9 PCI: pciehp: Remove pciehp_debug uses
We're about to convert pciehp to the dyndbg mechanism, which means we can
eventually remove pciehp_debug.

Replace uses of pciehp_debug with dbg() and ctrl_dbg(), which check
pciehp_debug internally.

Link: https://lore.kernel.org/lkml/20190509141456.223614-6-helgaas@kernel.org
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Keith Busch <keith.busch@intel.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
2019-05-09 16:45:19 -05:00
Frederick Lawler
9cc6f75b27 PCI/AER: Log messages with pci_dev, not pcie_device
Log messages with pci_dev, not pcie_device.  Factor out common message
prefixes with dev_fmt().

Example output change:

  - aer 0000:00:00.0:pci002: AER enabled with IRQ ...
  + pcieport 0000:00:00.0: AER: enabled with IRQ ...

Link: https://lore.kernel.org/lkml/20190509141456.223614-5-helgaas@kernel.org
Signed-off-by: Frederick Lawler <fred@fredlawl.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Keith Busch <keith.busch@intel.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
2019-05-09 16:45:02 -05:00
Frederick Lawler
10a9990c10 PCI/DPC: Log messages with pci_dev, not pcie_device
Log messages with pci_dev, not pcie_device.  Factor out common message
prefixes with dev_fmt().

Example output change:

  - dpc 0000:00:01.1:pcie008: DPC error containment capabilities...
  + pcieport 0000:00:01.1: DPC: error containment capabilities...

Link: https://lore.kernel.org/lkml/20190509141456.223614-4-helgaas@kernel.org
Signed-off-by: Frederick Lawler <fred@fredlawl.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Keith Busch <keith.busch@intel.com>
2019-05-09 16:27:34 -05:00
Frederick Lawler
00ebf1348c PCI/PME: Replace dev_printk(KERN_DEBUG) with dev_info()
Replace dev_printk(KERN_DEBUG) with dev_info() or dev_err() to be more
consistent with other logging.

These could be converted to dev_dbg(), but that depends on
CONFIG_DYNAMIC_DEBUG and DEBUG, and we want most of these messages to
*always* be in the dmesg log.

Also, use dev_fmt() to add the service name.  Example output change:

  - pcieport 0000:80:10.0: Signaling PME with IRQ ...
  + pcieport 0000:80:10.0: PME: Signaling with IRQ ...

Link: https://lore.kernel.org/lkml/20190509141456.223614-3-helgaas@kernel.org
Signed-off-by: Frederick Lawler <fred@fredlawl.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Keith Busch <keith.busch@intel.com>
2019-05-09 16:27:29 -05:00
Frederick Lawler
d557918345 PCI/AER: Replace dev_printk(KERN_DEBUG) with dev_info()
Replace dev_printk(KERN_DEBUG) with dev_info() or dev_err() to be more
consistent with other logging.

These could be converted to dev_dbg(), but that depends on
CONFIG_DYNAMIC_DEBUG and DEBUG, and we want most of these messages to
*always* be in the dmesg log.

Also remove a redundant kzalloc() failure message.

Link: https://lore.kernel.org/lkml/20190509141456.223614-2-helgaas@kernel.org
Signed-off-by: Frederick Lawler <fred@fredlawl.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Keith Busch <keith.busch@intel.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
2019-05-09 16:26:59 -05:00
Mohan Kumar
34c6b7105e PCI: Replace dev_printk(KERN_DEBUG) with dev_info(), etc
Replace dev_printk(KERN_DEBUG) with dev_info(), etc to be more consistent
with other logging and avoid checkpatch warnings.

The KERN_DEBUG messages could be converted to dev_dbg(), but that depends
on CONFIG_DYNAMIC_DEBUG and DEBUG, and we want most of these messages to
*always* be in the dmesg log.

Link: https://lore.kernel.org/lkml/1555733240-19875-1-git-send-email-mohankumar718@gmail.com
Signed-off-by: Mohan Kumar <mohankumar718@gmail.com>
[bhelgaas: commit log]
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2019-05-09 07:49:58 -05:00
Mohan Kumar
25da8dbaaf PCI: Replace printk(KERN_INFO) with pr_info(), etc
Replace printk() with pr_*() to be more consistent with other logging and
avoid checkpatch warnings.

Link: https://lore.kernel.org/lkml/1555733026-19609-1-git-send-email-mohankumar718@gmail.com
Link: https://lore.kernel.org/lkml/1555733130-19804-1-git-send-email-mohankumar718@gmail.com
Signed-off-by: Mohan Kumar <mohankumar718@gmail.com>
[bhelgaas: squash in similar changes from second patch in series]
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2019-05-09 07:49:54 -05:00
Bjorn Helgaas
7db4af43c9 PCI: Use dev_printk() when possible
Use dev_printk() when possible.  This makes messages more consistent with
other device-related messages and, in some cases, adds useful information.

Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2019-05-09 07:49:49 -05:00