Commit Graph

61 Commits

Author SHA1 Message Date
Linus Torvalds
4218a96faf - Config updates for BMIPS platform
- Build fixes
 - Makefile cleanups
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Merge tag 'mips_5.16_1' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux

Pull more MIPS updates from Thomas Bogendoerfer:

 - Config updates for BMIPS platform

 - Build fixes

 - Makefile cleanups

* tag 'mips_5.16_1' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux:
  mips: decompressor: do not copy source files while building
  MIPS: boot/compressed/: add __bswapdi2() to target for ZSTD decompression
  MIPS: fix duplicated slashes for Platform file path
  MIPS: fix *-pkg builds for loongson2ef platform
  PCI: brcmstb: Allow building for BMIPS_GENERIC
  MIPS: BMIPS: Enable PCI Kconfig
  MIPS: VDSO: remove -nostdlib compiler flag
  mips: BCM63XX: ensure that CPU_SUPPORTS_32BIT_KERNEL is set
  MIPS: Update bmips_stb_defconfig
  MIPS: Allow modules to set board_be_handler
2021-11-13 09:11:33 -08:00
Florian Fainelli
70060ee313 PCI: brcmstb: Allow building for BMIPS_GENERIC
BMIPS_GENERIC denotes support for the MIPS-based Broadcom STB platforms
which this driver can support.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2021-11-09 16:10:34 +01:00
Bjorn Helgaas
7b4bc10111 Merge branch 'remotes/lorenzo/pci/vmd'
- Assign a number to each VMD controller to distinguish them in
  /proc/interrupts (Chunguang Xu)

- Don't disable VMD MSI-X remapping if IOMMU remapping is enabled (Adrian
  Huang)

- Add Kconfig dependency on !UML for allyesconfig build issue (Johannes
  Berg)

* remotes/lorenzo/pci/vmd:
  PCI: vmd: depend on !UML
  PCI: vmd: Do not disable MSI-X remapping if interrupt remapping is enabled by IOMMU
  PCI: vmd: Assign a number to each VMD controller
2021-11-05 11:28:53 -05:00
Bjorn Helgaas
83e168d607 Merge branch 'pci/host/mt7621'
- Add MediaTek MT7621 SoC PCIe host controller (moved from staging) (Sergio
  Paracuellos)

* pci/host/mt7621:
  MAINTAINERS: Add Sergio Paracuellos as MT7621 PCIe maintainer
  PCI: mt7621: Add MediaTek MT7621 PCIe host controller driver
  dt-bindings: PCI: Add MT7621 SoC PCIe host controller

# Conflicts:
#	drivers/pci/controller/Kconfig
#	drivers/pci/controller/Makefile
2021-11-05 11:28:51 -05:00
Marc Zyngier
946d619fa2 iommu/dart: Exclude MSI doorbell from PCIe device IOVA range
The MSI doorbell on Apple HW can be any address in the low 4GB range.
However, the MSI write is matched by the PCIe block before hitting the
iommu. It must thus be excluded from the IOVA range that is assigned to any
PCIe device.

Link: https://lore.kernel.org/r/20210929163847.2807812-9-maz@kernel.org
Tested-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Sven Peter <sven@svenpeter.dev>
2021-11-04 16:29:30 -05:00
Alyssa Rosenzweig
1e33888fbe PCI: apple: Add initial hardware bring-up
Add a minimal driver to bring up the PCIe bus on Apple system-on-chips,
particularly the Apple M1. This driver exposes the internal bus used for
the USB type-A ports, Ethernet, Wi-Fi, and Bluetooth. Bringing up the
radios requires additional drivers beyond what's necessary for PCIe itself.

Co-developed-by: Stan Skowronek <stan@corellium.com>
Link: https://lore.kernel.org/r/20210929163847.2807812-5-maz@kernel.org
Signed-off-by: Stan Skowronek <stan@corellium.com>
Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Reviewed-by: Sven Peter <sven@svenpeter.dev>
2021-11-04 14:17:08 -05:00
Sergio Paracuellos
2bdd5238e7 PCI: mt7621: Add MediaTek MT7621 PCIe host controller driver
Add driver for the PCIe controller of the MT7621 SoC.

[bhelgaas: rename from pci-mt7621.c to pcie-mt7621.c; also rename Kconfig
symbol from PCI_MT7621 to PCIE_MT7621]
Link: https://lore.kernel.org/r/20210922050035.18162-3-sergio.paracuellos@gmail.com
Signed-off-by: Sergio Paracuellos <sergio.paracuellos@gmail.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-10-21 10:59:18 -05:00
Johannes Berg
42cf2a633d PCI: vmd: depend on !UML
With UML having enabled (simulated) PCI on UML, VMD breaks
allyesconfig/allmodconfig compilation because it assumes
it's running on X86_64 bare metal, and has hardcoded API
use of ARCH=x86. Make it depend on !UML to fix this.

Link: https://lore.kernel.org/r/20210811162530.affe26231bc3.I131b3c1e67e3d2ead6e98addd256c835fbef9a3e@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Jon Derrick <jonathan.derrick@intel.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org> # build-tested
2021-10-13 15:12:17 +01:00
Geert Uytterhoeven
9f1168cf26 PCI: controller: PCI_IXP4XX should depend on ARCH_IXP4XX
The Intel IXP4xx PCI controller is only present on Intel IXP4xx
XScale-based network processor SoCs.

Add a dependency on ARCH_IXP4XX, to prevent asking the user about this
driver when configuring a kernel without support for the XScale
processor family.

Link: https://lore.kernel.org/r/6a88e55fe58fc280f4ff1ca83c154e4895b6dcbf.1624972789.git.geert+renesas@glider.be
Fixes: f7821b4934 ("PCI: ixp4xx: Add a new driver for IXP4xx")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
[lorenzo.pieralisi@arm.com: commit log]
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
2021-07-23 16:10:05 +01:00
Linus Walleij
f7821b4934 PCI: ixp4xx: Add a new driver for IXP4xx
This adds a new PCI controller driver for the Intel IXP4xx
(IX425, IXP435 etc), based on the XScale microarchitecture.

This replaces the old driver in arch/arm/mach-ixp4xx/common-pci.c
which utilized the ARM-specific BIOS32 PCI framework,
and all parameterization for such things as memory and
IO space as well as interrupt swizzling is done from the
device tree.

The plan is to phase out and delete the old driver piecemal.

The __raw_writel() and __raw_readl() are used for accessing
the PCI controller for the same reason that these accessors
are used in the timer, IRQ and GPIO drivers: the platform
will alter its address bus pattern based on whether the
system is booted in big- or little-endian mode. For this
reason all register on IXP4xx must always be accessed in
native (CPU) endianness.

This driver supports 64MB of PCI memory space, but not the
indirect access of 1GB that is available in the old driver.
We can address that later if and only if there are users
that need all 1GB of PCI address space. Krzysztof reports
having to use indirect MMIO only once for a VGA card. There
is work ongoing for general indirect MMIO. (In practice
the indirect MMIO is performed by writing address and
writing and reading values into/from a controller
register.)

Tested by booting the NSLU2, attaching a USB stick, mounting
and browsing the drive.

Link: https://lore.kernel.org/linux-arm-kernel/m37edwuv8m.fsf@t19.piap.pl/
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Imre Kaloz <kaloz@openwrt.org>
Cc: Krzysztof Halasa <khalasa@piap.pl>
Cc: Zoltan HERPAI <wigyori@uid0.hu>
Cc: Raylynn Knight <rayknight@me.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2021-06-17 11:42:48 +02:00
Bjorn Helgaas
51bc2b7ffd Merge branch 'remotes/lorenzo/pci/msi'
- Convert tegra to MSI domains (Marc Zyngier)

- Use rcar controller address as MSI doorbell instead of allocating a page
  (Marc Zyngier)

- Convert rcar to MSI domains (Marc Zyngier)

- Use xilinx port structure as MSI doorbell instead of allocating a page
  (Marc Zyngier)

- Convert xilinx to MSI domains (Marc Zyngier)

- Remove unused Hyper-V msi_controller structure (Marc Zyngier)

- Remove unused PCI core msi_controller support (Marc Zyngier)

- Remove struct msi_controller (Marc Zyngier)

- Remove unused default_teardown_msi_irqs() (Marc Zyngier)

- Let host bridges declare their reliance on MSI domains (Marc Zyngier)

- Make pci_host_common_probe() declare its reliance on MSI domains (Marc
  Zyngier)

- Advertise mediatek lack of built-in MSI handling (Thomas Gleixner)

- Document ways of ending up with NO_MSI (Marc Zyngier)

- Refactor HT advertising of NO_MSI flag (Marc Zyngier)

* remotes/lorenzo/pci/msi:
  PCI: Refactor HT advertising of NO_MSI flag
  PCI/MSI: Document the various ways of ending up with NO_MSI
  PCI: mediatek: Advertise lack of built-in MSI handling
  PCI/MSI: Make pci_host_common_probe() declare its reliance on MSI domains
  PCI/MSI: Let PCI host bridges declare their reliance on MSI domains
  PCI/MSI: Kill default_teardown_msi_irqs()
  PCI/MSI: Kill msi_controller structure
  PCI/MSI: Drop use of msi_controller from core code
  PCI: hv: Drop msi_controller structure
  PCI: xilinx: Convert to MSI domains
  PCI: xilinx: Don't allocate extra memory for the MSI capture address
  PCI: rcar: Convert to MSI domains
  PCI: rcar: Don't allocate extra memory for the MSI capture address
  PCI: tegra: Convert to MSI domains
2021-05-04 10:43:30 -05:00
Jianjun Wang
d3bf75b579 PCI: mediatek-gen3: Add MediaTek Gen3 driver for MT8192
MediaTek's PCIe host controller has three generation HWs, the new
generation HW is an individual bridge, it supports Gen3 speed and
compatible with Gen2, Gen1 speed.

Add support for new Gen3 controller which can be found on MT8192.

Link: https://lore.kernel.org/r/20210420061723.989-4-jianjun.wang@mediatek.com
Signed-off-by: Jianjun Wang <jianjun.wang@mediatek.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Acked-by: Ryder Lee <ryder.lee@mediatek.com>
2021-04-29 17:34:09 +01:00
Marc Zyngier
313b64c3ae PCI: xilinx: Convert to MSI domains
In anticipation of the removal of the msi_controller structure, convert
the ancient xilinx host controller driver to MSI domains.

We end-up with the usual two domain structure, the top one being a
generic PCI/MSI domain, the bottom one being xilinx-specific and handling
the actual HW interrupt allocation.

This allows us to fix some of the most appaling MSI programming, where
the message programmed in the device is the virtual IRQ number instead
of the allocated vector number. The allocator is also made safe with
a mutex. This should allow support for MultiMSI, but I decided not to
even try, since I cannot test it.

Link: https://lore.kernel.org/r/20210330151145.997953-6-maz@kernel.org
Tested-by: Bharat Kumar Gogada <bharatku@xilinx.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
2021-04-20 14:11:21 +01:00
Marc Zyngier
83ed8d4fa6 PCI: rcar: Convert to MSI domains
In anticipation of the removal of the msi_controller structure, convert
the Rcar host controller driver to MSI domains.

We end-up with the usual two domain structure, the top one being a
generic PCI/MSI domain, the bottom one being Rcar-specific and handling
the actual HW interrupt allocation.

Link: https://lore.kernel.org/r/20210330151145.997953-4-maz@kernel.org
Tested-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
[lorenzo.pieralisi@arm.com: merged fix https://lore.kernel.org/linux-pci/87y2e2p9wk.wl-maz@kernel.org]
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
2021-04-20 14:11:21 +01:00
Marc Zyngier
2c99e55f79 PCI: tegra: Convert to MSI domains
In anticipation of the removal of the msi_controller structure, convert
the Tegra host controller driver to MSI domains.

We end-up with the usual two domain structure, the top one being a
generic PCI/MSI domain, the bottom one being Tegra-specific and handling
the actual HW interrupt allocation.

While at it, convert the normal interrupt handler to a chained handler,
handle the controller's MSI IRQ edge triggered, support multiple MSIs
per device and use the AFI_MSI_EN_VEC* registers to provide MSI masking.

[treding@nvidia.com: fix, clean up and address TODOs from Marc's draft]

Link: https://lore.kernel.org/r/20210330151145.997953-2-maz@kernel.org
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
2021-04-20 14:11:01 +01:00
Bjorn Helgaas
e18fb64b79 Merge branch 'remotes/lorenzo/pci/misc'
- Remove IRQ handler & data together for altera, brcmstb, dwc (Martin
  Kaiser)

- Fix xgene race in installing chained IRQ handler (Martin Kaiser)

- Drop PCIE_RCAR config option (replaced by PCIE_RCAR_HOST) (Lad Prabhakar)

- Fix xgene comment about CRS vs CRS SV (Bjorn Helgaas)

* remotes/lorenzo/pci/misc:
  PCI: hv: Fix typo
  PCI: xgene: Fix CRS SV comment
  PCI: brcmstb: Remove chained IRQ handler and data in one go
  PCI: Drop PCIE_RCAR config option
  PCI: xgene-msi: Fix race in installing chained irq handler
  PCI: dwc: Remove IRQ handler and data in one go
  PCI: altera-msi: Remove IRQ handler and data in one go
2021-02-24 14:59:25 -06:00
Bjorn Helgaas
0a437c50f8 Merge branch 'remotes/lorenzo/pci/tango'
- Remove tango host controller driver (Arnd Bergmann)

* remotes/lorenzo/pci/tango:
  PCI: Remove tango host controller driver

# Conflicts:
#	drivers/pci/controller/Makefile
2021-02-24 14:59:25 -06:00
Bjorn Helgaas
52c1de640e Merge branch 'pci/microchip'
- Call platform_set_drvdata() earlier so drivers can do window setup in
  init functions instead of custom probe (Daire McNamara)

- Add DT binding and host mode driver for Microchip PolarFire PCIe
  controller (Daire McNamara)

* pci/microchip:
  MAINTAINERS: Add Daire McNamara as Microchip PCIe driver maintainer
  PCI: microchip: Add Microchip PolarFire PCIe controller driver
  dt-bindings: PCI: microchip: Add Microchip PolarFire host binding
  PCI: Call platform_set_drvdata earlier in devm_pci_alloc_host_bridge
2021-02-24 14:59:22 -06:00
Daire McNamara
6f15a9c9f9 PCI: microchip: Add Microchip PolarFire PCIe controller driver
Add support for the Microchip PolarFire PCIe controller when configured in
host (Root Complex) mode.

[bhelgaas: wrap lines to fit in 80 columns, fix trivial style issues]
Link: https://lore.kernel.org/r/20210125162934.5335-4-daire.mcnamara@microchip.com
Signed-off-by: Daire McNamara <daire.mcnamara@microchip.com>
[lorenzo.pieralisi@arm.com: minor comments tweak]
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Rob Herring <robh@kernel.org>
2021-02-23 14:00:27 -06:00
Arnd Bergmann
de9427ca87 PCI: Remove tango host controller driver
The tango platform is getting removed, so the driver is no
longer needed.

Link: https://lore.kernel.org/r/20210120150800.1650898-1-arnd@kernel.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Acked-by: Mans Rullgard <mans@mansr.com>
Cc: Marc Gonzalez <marc.w.gonzalez@free.fr>
Cc: Mans Rullgard <mans@mansr.com>
2021-01-22 16:57:59 +00:00
Lad Prabhakar
ff591f7490 PCI: Drop PCIE_RCAR config option
All the defconfig files have replaced PCIE_RCAR config option with
PCIE_RCAR_HOST config option which built the same driver, so we can
now safely drop PCIE_RCAR config option.

Link: https://lore.kernel.org/r/20201229170848.18482-1-prabhakar.mahadev-lad.rj@bp.renesas.com
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
2021-01-19 12:01:00 +00:00
Rafał Miłecki
0cdfaceb98 PCI: brcmstb: support BCM4908 with external PERST# signal controller
BCM4908 uses external MISC block for controlling PERST# signal. Use it
as a reset controller.

Link: https://lore.kernel.org/r/20201210180421.7230-3-zajec5@gmail.com
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
2021-01-19 11:57:20 +00:00
Linus Torvalds
00937f36b0 pci-v5.10-changes
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Merge tag 'pci-v5.10-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

Pull PCI updates from Bjorn Helgaas:
 "Enumeration:
   - Print IRQ number used by PCIe Link Bandwidth Notification (Dongdong
     Liu)
   - Add schedule point in pci_read_config() to reduce max latency
     (Jiang Biao)
   - Add Kconfig options for MPS/MRRS strategy (Jim Quinlan)

  Resource management:
   - Fix pci_iounmap() memory leak when !CONFIG_GENERIC_IOMAP (Lorenzo
     Pieralisi)

  PCIe native device hotplug:
   - Reduce noisiness on hot removal (Lukas Wunner)

  Power management:
   - Revert "PCI/PM: Apply D2 delay as milliseconds, not microseconds"
     that was done on the basis of spec typo (Bjorn Helgaas)
   - Rename pci_dev.d3_delay to d3hot_delay to remove D3hot/D3cold
     ambiguity (Krzysztof Wilczyński)
   - Remove unused pcibios_pm_ops (Vaibhav Gupta)

  IOMMU:
   - Enable Translation Blocking for external devices to harden against
     DMA attacks (Rajat Jain)

  Error handling:
   - Add an ACPI APEI notifier chain for vendor CPER records to enable
     device-specific error handling (Shiju Jose)

  ASPM:
   - Remove struct aspm_register_info to simplify code (Saheed O.
     Bolarinwa)

  Amlogic Meson PCIe controller driver:
   - Build as module by default (Kevin Hilman)

  Ampere Altra PCIe controller driver:
   - Add MCFG quirk to work around non-standard ECAM implementation
     (Tuan Phan)

  Broadcom iProc PCIe controller driver:
   - Set affinity mask on MSI interrupts (Mark Tomlinson)

  Broadcom STB PCIe controller driver:
   - Make PCIE_BRCMSTB depend on ARCH_BRCMSTB (Jim Quinlan)
   - Add DT bindings for more Brcmstb chips (Jim Quinlan)
   - Add bcm7278 register info (Jim Quinlan)
   - Add bcm7278 PERST# support (Jim Quinlan)
   - Add suspend and resume pm_ops (Jim Quinlan)
   - Add control of rescal reset (Jim Quinlan)
   - Set additional internal memory DMA viewport sizes (Jim Quinlan)
   - Accommodate MSI for older chips (Jim Quinlan)
   - Set bus max burst size by chip type (Jim Quinlan)
   - Add support for bcm7211, bcm7216, bcm7445, bcm7278 (Jim Quinlan)

  Freescale i.MX6 PCIe controller driver:
   - Use dev_err_probe() to reduce redundant messages (Anson Huang)

  Freescale Layerscape PCIe controller driver:
   - Enforce 4K DMA buffer alignment in endpoint test (Hou Zhiqiang)
   - Add DT compatible strings for ls1088a, ls2088a (Xiaowei Bao)
   - Add endpoint support for ls1088a, ls2088a (Xiaowei Bao)
   - Add endpoint test support for lS1088a (Xiaowei Bao)
   - Add MSI-X support for ls1088a (Xiaowei Bao)

  HiSilicon HIP PCIe controller driver:
   - Handle HIP-specific errors via ACPI APEI (Yicong Yang)

  HiSilicon Kirin PCIe controller driver:
   - Return -EPROBE_DEFER if the GPIO isn't ready (Bean Huo)

  Intel VMD host bridge driver:
   - Factor out physical offset, bus offset, IRQ domain, IRQ allocation
     (Jon Derrick)
   - Use generic PCI PM correctly (Jon Derrick)

  Marvell Aardvark PCIe controller driver:
   - Fix compilation on s390 (Pali Rohár)
   - Implement driver 'remove' function and allow to build it as module
     (Pali Rohár)
   - Move PCIe reset card code to advk_pcie_train_link() (Pali Rohár)
   - Convert mvebu a3700 internal SMCC firmware return codes to errno
     (Pali Rohár)
   - Fix initialization with old Marvell's Arm Trusted Firmware (Pali
     Rohár)

  Microsoft Hyper-V host bridge driver:
   - Fix hibernation in case interrupts are not re-created (Dexuan Cui)

  NVIDIA Tegra PCIe controller driver:
   - Stop checking return value of debugfs_create() functions (Greg
     Kroah-Hartman)
   - Convert to use DEFINE_SEQ_ATTRIBUTE macro (Liu Shixin)

  Qualcomm PCIe controller driver:
   - Reset PCIe to work around Qsdk U-Boot issue (Ansuel Smith)

  Renesas R-Car PCIe controller driver:
   - Add DT documentation for r8a774a1, r8a774b1, r8a774e1 endpoints
     (Lad Prabhakar)
   - Add RZ/G2M, RZ/G2N, RZ/G2H IDs to endpoint test (Lad Prabhakar)
   - Add DT support for r8a7742 (Lad Prabhakar)

  Socionext UniPhier Pro5 controller driver:
   - Add DT descriptions of iATU register (host and endpoint) (Kunihiko
     Hayashi)

  Synopsys DesignWare PCIe controller driver:
   - Add link up check in dw_child_pcie_ops.map_bus() (racy, but seems
     unavoidable) (Hou Zhiqiang)
   - Fix endpoint Header Type check so multi-function devices work (Hou
     Zhiqiang)
   - Skip PCIE_MSI_INTR0* programming if MSI is disabled (Jisheng Zhang)
   - Stop leaking MSI page in suspend/resume (Jisheng Zhang)
   - Add common iATU register support instead of keystone-specific code
     (Kunihiko Hayashi)
   - Major config space access and other cleanups in dwc core and
     drivers that use it (al, exynos, histb, imx6, intel-gw, keystone,
     kirin, meson, qcom, tegra) (Rob Herring)
   - Add multiple PFs support for endpoint (Xiaowei Bao)
   - Add MSI-X doorbell mode in endpoint mode (Xiaowei Bao)

  Miscellaneous:
   - Use fallthrough pseudo-keyword (Gustavo A. R. Silva)
   - Fix "0 used as NULL pointer" warnings (Gustavo Pimentel)
   - Fix "cast truncates bits from constant value" warnings (Gustavo
     Pimentel)
   - Remove redundant zeroing for sg_init_table() (Julia Lawall)
   - Use scnprintf(), not snprintf(), in sysfs "show" functions
     (Krzysztof Wilczyński)
   - Remove unused assignments (Krzysztof Wilczyński)
   - Fix "0 used as NULL pointer" warning (Krzysztof Wilczyński)
   - Simplify bool comparisons (Krzysztof Wilczyński)
   - Use for_each_child_of_node() and for_each_node_by_name() (Qinglang
     Miao)
   - Simplify return expressions (Qinglang Miao)"

* tag 'pci-v5.10-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (147 commits)
  PCI: vmd: Update VMD PM to correctly use generic PCI PM
  PCI: vmd: Create IRQ allocation helper
  PCI: vmd: Create IRQ Domain configuration helper
  PCI: vmd: Create bus offset configuration helper
  PCI: vmd: Create physical offset helper
  PCI: v3-semi: Remove unneeded break
  PCI: dwc: Add link up check in dw_child_pcie_ops.map_bus()
  PCI/ASPM: Remove struct pcie_link_state.l1ss
  PCI/ASPM: Remove struct aspm_register_info.l1ss_cap
  PCI/ASPM: Pass L1SS Capabilities value, not struct aspm_register_info
  PCI/ASPM: Remove struct aspm_register_info.l1ss_ctl1
  PCI/ASPM: Remove struct aspm_register_info.l1ss_ctl2 (unused)
  PCI/ASPM: Remove struct aspm_register_info.l1ss_cap_ptr
  PCI/ASPM: Remove struct aspm_register_info.latency_encoding
  PCI/ASPM: Remove struct aspm_register_info.enabled
  PCI/ASPM: Remove struct aspm_register_info.support
  PCI/ASPM: Use 'parent' and 'child' for readability
  PCI/ASPM: Move LTR path check to where it's used
  PCI/ASPM: Move pci_clear_and_set_dword() earlier
  PCI: dwc: Fix MSI page leakage in suspend/resume
  ...
2020-10-22 12:41:00 -07:00
Bjorn Helgaas
a66999a344 Merge branch 'remotes/lorenzo/pci/brcmstb'
- Make PCIE_BRCMSTB depend on and default to ARCH_BRCMSTB (Jim Quinlan)

- Add DT bindings for 7278, 7216, 7211, and new properties (Jim Quinlan)

- Add bcm7278 register info (Jim Quinlan)

- Add suspend and resume pm_ops (Jim Quinlan)

- Add bcm7278 PERST# support (Jim Quinlan)

- Add control of RESCAL reset (Jim Quinlan)

- Set additional internal memory DMA viewport sizes (Jim Quinlan)

- Accommodate MSI for older chips (Jim Quinlan)

- Set bus max burst size by chip type (Jim Quinlan)

- Add bcm7211, bcm7216, bcm7445, bcm7278 to match list (Jim Quinlan)

* remotes/lorenzo/pci/brcmstb:
  PCI: brcmstb: Add bcm7211, bcm7216, bcm7445, bcm7278 to match list
  PCI: brcmstb: Set bus max burst size by chip type
  PCI: brcmstb: Accommodate MSI for older chips
  PCI: brcmstb: Set additional internal memory DMA viewport sizes
  PCI: brcmstb: Add control of rescal reset
  PCI: brcmstb: Add bcm7278 PERST# support
  PCI: brcmstb: Add suspend and resume pm_ops
  PCI: brcmstb: Add bcm7278 register info
  dt-bindings: PCI: Add bindings for more Brcmstb chips
  PCI: brcmstb: PCIE_BRCMSTB depends on ARCH_BRCMSTB
2020-10-21 09:58:38 -05:00
Bjorn Helgaas
d1640a8307 Merge branch 'remotes/lorenzo/pci/aardvark'
- Fix s390 build error (Pali Rohár)

- Check for errors from pci_bridge_emul_init() (Pali Rohár)

- Export pci-bridge-emul functions for use by modules (Pali Rohár)

- Make aardvark driver modular (Pali Rohár)

- Move PCIe reset code to advk_pcie_train_link() (Pali Rohár)

- Convert internal SMCC firmware return codes to errno (Pali Rohár)

- Fix initialization with old Marvell's Arm Trusted Firmware (Pali Rohár)

* remotes/lorenzo/pci/aardvark:
  PCI: aardvark: Fix initialization with old Marvell's Arm Trusted Firmware
  phy: marvell: comphy: Convert internal SMCC firmware return codes to errno
  PCI: aardvark: Move PCIe reset card code to advk_pcie_train_link()
  PCI: aardvark: Implement driver 'remove' function and allow to build it as module
  PCI: pci-bridge-emul: Export API functions
  PCI: aardvark: Check for errors from pci_bridge_emul_init() call
  PCI: aardvark: Fix compilation on s390
2020-10-21 09:58:37 -05:00
Jim Quinlan
b927ad3405 PCI: brcmstb: PCIE_BRCMSTB depends on ARCH_BRCMSTB
Have PCIE_BRCMSTB depend on ARCH_BRCMSTB.  Also set the default value to
ARCH_BRCMSTB.

Link: https://lore.kernel.org/r/20200911175232.19016-2-james.quinlan@broadcom.com
Signed-off-by: Jim Quinlan <jquinlan@broadcom.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
2020-09-17 12:30:38 +01:00
Thomas Gleixner
077ee78e39 PCI/MSI: Make arch_.*_msi_irq[s] fallbacks selectable
The arch_.*_msi_irq[s] fallbacks are compiled in whether an architecture
requires them or not. Architectures which are fully utilizing hierarchical
irq domains should never call into that code.

It's not only architectures which depend on that by implementing one or
more of the weak functions, there is also a bunch of drivers which relies
on the weak functions which invoke msi_controller::setup_irq[s] and
msi_controller::teardown_irq.

Make the architectures and drivers which rely on them select them in Kconfig
and if not selected replace them by stub functions which emit a warning and
fail the PCI/MSI interrupt allocation.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20200826112333.992429909@linutronix.de
2020-09-16 16:52:37 +02:00
Yicong Yang
acb52897cc PCI: hip: Add handling of HiSilicon HIP PCIe controller errors
The HiSilicon HIP PCIe controller is capable of handling errors
on root port and performing port reset separately at each root port.

Add error handling driver for HIP PCIe controller to log
and report recoverable errors. Perform root port reset and restore
link status after the recovery.

Following are some of the PCIe controller's recoverable errors
1. completion transmission timeout error.
2. CRS retry counter over the threshold error.
3. ECC 2 bit errors
4. AXI bresponse/rresponse errors etc.

The driver placed in the drivers/pci/controller/ because the
HIP PCIe controller does not use DWC IP.

Link: https://lore.kernel.org/r/20200903123456.1823-3-shiju.jose@huawei.com
Signed-off-by: Yicong Yang <yangyicong@hisilicon.com>
Signed-off-by: Shiju Jose <shiju.jose@huawei.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
2020-09-16 10:30:42 +01:00
Pali Rohár
526a76991b PCI: aardvark: Implement driver 'remove' function and allow to build it as module
Providing driver's 'remove' function allows kernel to bind and unbind devices
from aardvark driver. It also allows to build aardvark driver as a module.

Compiling aardvark as a module simplifies development and debugging of
this driver as it can be reloaded at runtime without the need to reboot
to new kernel.

Link: https://lore.kernel.org/r/20200907111038.5811-5-pali@kernel.org
Signed-off-by: Pali Rohár <pali@kernel.org>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Marek Behún <marek.behun@nic.cz>
2020-09-07 14:27:53 +01:00
Bharat Kumar Gogada
508f610648 PCI: xilinx-cpm: Add Versal CPM Root Port driver
Add support for Versal CPM as Root Port.

The Versal ACAP devices include CCIX-PCIe Module (CPM). The integrated
block for CPM along with the integrated bridge can function as PCIe Root
Port.

Bridge error and legacy interrupts in Versal CPM are handled using Versal
CPM specific interrupt line.

[bhelgaas: fold in kerneldoc fix from
https://lore.kernel.org/linux-acpi/20200729201224.26799-7-krzk@kernel.org/]
Link: https://lore.kernel.org/r/1592312214-9347-3-git-send-email-bharat.kumar.gogada@xilinx.com
Signed-off-by: Bharat Kumar Gogada <bharat.kumar.gogada@xilinx.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Rob Herring <robh@kernel.org>
2020-08-05 17:09:15 -05:00
Masahiro Yamada
a7f7f6248d treewide: replace '---help---' in Kconfig files with 'help'
Since commit 84af7a6194 ("checkpatch: kconfig: prefer 'help' over
'---help---'"), the number of '---help---' has been gradually
decreasing, but there are still more than 2400 instances.

This commit finishes the conversion. While I touched the lines,
I also fixed the indentation.

There are a variety of indentation styles found.

  a) 4 spaces + '---help---'
  b) 7 spaces + '---help---'
  c) 8 spaces + '---help---'
  d) 1 space + 1 tab + '---help---'
  e) 1 tab + '---help---'    (correct indentation)
  f) 1 tab + 1 space + '---help---'
  g) 1 tab + 2 spaces + '---help---'

In order to convert all of them to 1 tab + 'help', I ran the
following commend:

  $ find . -name 'Kconfig*' | xargs sed -i 's/^[[:space:]]*---help---/\thelp/'

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2020-06-14 01:57:21 +09:00
Linus Torvalds
3925c3bbdf pci-v5.8-changes
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Merge tag 'pci-v5.8-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

Pull PCI updates from Bjorn Helgaas:
 "Enumeration:

   - Program MPS for RCiEP devices (Ashok Raj)

   - Fix pci_register_host_bridge() device_register() error handling
     (Rob Herring)

   - Fix pci_host_bridge struct device release/free handling (Rob
     Herring)

  Resource management:

   - Allow resizing BARs for devices on root bus (Ard Biesheuvel)

  Power management:

   - Reduce Thunderbolt resume time by working around devices that don't
     support DLL Link Active reporting (Mika Westerberg)

   - Work around a Pericom USB controller OHCI/EHCI PME# defect
     (Kai-Heng Feng)

  Virtualization:

   - Add ACS quirk for Intel Root Complex Integrated Endpoints (Ashok
     Raj)

   - Avoid FLR for AMD Starship USB 3.0 (Kevin Buettner)

   - Avoid FLR for AMD Matisse HD Audio & USB 3.0 (Marcos Scriven)

  Error handling:

   - Use only _OSC (not HEST FIRMWARE_FIRST) to determine AER ownership
     (Alexandru Gagniuc, Kuppuswamy Sathyanarayanan)

   - Reduce verbosity by logging only ACPI_NOTIFY_DISCONNECT_RECOVER
     events (Kuppuswamy Sathyanarayanan)

   - Don't enable AER by default in Kconfig (Bjorn Helgaas)

  Peer-to-peer DMA:

   - Add AMD Zen Raven and Renoir Root Ports to whitelist (Alex Deucher)

  ASPM:

   - Allow ASPM on links to PCIe-to-PCI/PCI-X Bridges (Kai-Heng Feng)

  Endpoint framework:

   - Fix DMA channel release in test (Kunihiko Hayashi)

   - Add page size as argument to pci_epc_mem_init() (Lad Prabhakar)

   - Add support to handle multiple base for mapping outbound memory
     (Lad Prabhakar)

  Generic host bridge driver:

   - Support building as module (Rob Herring)

   - Eliminate pci_host_common_probe wrappers (Rob Herring)

  Amlogic Meson PCIe controller driver:

   - Don't use FAST_LINK_MODE to set up link (Marc Zyngier)

  Broadcom STB PCIe controller driver:

   - Disable ASPM L0s if 'aspm-no-l0s' in DT (Jim Quinlan)

   - Fix clk_put() error (Jim Quinlan)

   - Fix window register offset (Jim Quinlan)

   - Assert fundamental reset on initialization (Nicolas Saenz Julienne)

   - Add notify xHCI reset property (Nicolas Saenz Julienne)

   - Add init routine for Raspberry Pi 4 VL805 USB controller (Nicolas
     Saenz Julienne)

   - Sync with Raspberry Pi 4 firmware for VL805 initialization (Nicolas
     Saenz Julienne)

  Cadence PCIe controller driver:

   - Remove "cdns,max-outbound-regions" DT property (replaced by
     "ranges") (Kishon Vijay Abraham I)

   - Read 32-bit (not 16-bit) Vendor ID/Device ID property from DT
     (Kishon Vijay Abraham I)

  Marvell Aardvark PCIe controller driver:

   - Improve link training (Marek Behún)

   - Add PHY support (Marek Behún)

   - Add "phys", "max-link-speed", "reset-gpios" to dt-binding (Marek
     Behún)

   - Train link immediately after enabling training to work around
     detection issues with some cards (Pali Rohár)

   - Issue PERST via GPIO to work around detection issues (Pali Rohár)

   - Don't blindly enable ASPM L0s (Pali Rohár)

   - Replace custom macros by standard linux/pci_regs.h macros (Pali
     Rohár)

  Microsoft Hyper-V host bridge driver:

   - Fix probe failure path to release resource (Wei Hu)

   - Retry PCI bus D0 entry on invalid device state for kdump (Wei Hu)

  Renesas R-Car PCIe controller driver:

   - Fix incorrect programming of OB windows (Andrew Murray)

   - Add suspend/resume (Kazufumi Ikeda)

   - Rename pcie-rcar.c to pcie-rcar-host.c (Lad Prabhakar)

   - Add endpoint controller driver (Lad Prabhakar)

   - Fix PCIEPAMR mask calculation (Lad Prabhakar)

   - Add r8a77961 to DT binding (Yoshihiro Shimoda)

  Socionext UniPhier Pro5 controller driver:

   - Add endpoint controller driver (Kunihiko Hayashi)

  Synopsys DesignWare PCIe controller driver:

   - Program outbound ATU upper limit register (Alan Mikhak)

   - Fix inner MSI IRQ domain registration (Marc Zyngier)

  Miscellaneous:

   - Check for platform_get_irq() failure consistently (negative return
     means failure) (Aman Sharma)

   - Fix several runtime PM get/put imbalances (Dinghao Liu)

   - Use flexible-array and struct_size() helpers for code cleanup
     (Gustavo A. R. Silva)

   - Update & fix issues in bridge emulation of PCIe registers (Jon
     Derrick)

   - Add macros for bridge window names (PCI_BRIDGE_IO_WINDOW, etc)
     (Krzysztof Wilczyński)

   - Work around Intel PCH MROMs that have invalid BARs (Xiaochun Lee)"

* tag 'pci-v5.8-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (100 commits)
  PCI: uniphier: Add Socionext UniPhier Pro5 PCIe endpoint controller driver
  PCI: Add ACS quirk for Intel Root Complex Integrated Endpoints
  PCI/DPC: Print IRQ number used by port
  PCI/AER: Use "aer" variable for capability offset
  PCI/AER: Remove redundant dev->aer_cap checks
  PCI/AER: Remove redundant pci_is_pcie() checks
  PCI/AER: Remove HEST/FIRMWARE_FIRST parsing for AER ownership
  PCI: tegra: Fix runtime PM imbalance on error
  PCI: vmd: Filter resource type bits from shadow register
  PCI: tegra194: Fix runtime PM imbalance on error
  dt-bindings: PCI: Add UniPhier PCIe endpoint controller description
  PCI: hv: Use struct_size() helper
  PCI: Rename _DSM constants to align with spec
  PCI: Avoid FLR for AMD Starship USB 3.0
  PCI: Avoid FLR for AMD Matisse HD Audio & USB 3.0
  x86/PCI: Drop unused xen_register_pirq() gsi_override parameter
  PCI: dwc: Use private data pointer of "struct irq_domain" to get pcie_port
  PCI: amlogic: meson: Don't use FAST_LINK_MODE to set up link
  PCI: dwc: Fix inner MSI IRQ domain registration
  PCI: dwc: pci-dra7xx: Use devm_platform_ioremap_resource_byname()
  ...
2020-06-06 11:01:58 -07:00
Bjorn Helgaas
51755de739 Merge branch 'remotes/lorenzo/pci/rcar'
- Fix rcar OB window programming (Andrew Murray)

  - Add rcar suspend/resume support (Kazufumi Ikeda)

  - Add r8a77961 to DT binding (Yoshihiro Shimoda)

  - Rename pcie-rcar.c to pcie-rcar-host.c to make room for endpoint mode
    (Lad Prabhakar)

  - Move shareable code to pcie-rcar.c (Lad Prabhakar)

  - Correct PCIEPAMR mask calculation for "size < 128" (Lad Prabhakar)

  - Add endpoint support for multiple outbound memory windows (Lad
    Prabhakar)

  - Add R-Car PCIe endpoint driver and DT bindings (Lad Prabhakar)

* remotes/lorenzo/pci/rcar:
  MAINTAINERS: Add file patterns for rcar PCI device tree bindings
  PCI: rcar: Add endpoint mode support
  dt-bindings: PCI: rcar: Add bindings for R-Car PCIe endpoint controller
  PCI: endpoint: Add support to handle multiple base for mapping outbound memory
  PCI: endpoint: Pass page size as argument to pci_epc_mem_init()
  PCI: rcar: Fix calculating mask for PCIEPAMR register
  PCI: rcar: Move shareable code to a common file
  PCI: rcar: Rename pcie-rcar.c to pcie-rcar-host.c
  dt-bindings: pci: rcar: add r8a77961 support
  PCI: rcar: Add suspend/resume
  PCI: rcar: Fix incorrect programming of OB windows
2020-06-04 12:59:18 -05:00
Jiaxun Yang
1f58cca5cf PCI: Add Loongson PCI Controller support
This controller can be found on Loongson-2K SoC, Loongson-3
systems with RS780E/LS7A PCH.

The RS780E part of code was previously located at
arch/mips/pci/ops-loongson3.c and now it can use generic PCI
driver implementation.

Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Acked-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2020-05-27 12:52:30 +02:00
Lad Prabhakar
2a6d0d63d9 PCI: rcar: Add endpoint mode support
Add support for R-Car PCIe controller to work in endpoint mode.

Link: https://lore.kernel.org/r/1588854799-13710-8-git-send-email-prabhakar.mahadev-lad.rj@bp.renesas.com
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
2020-05-22 12:35:32 +01:00
Lad Prabhakar
a18f4b6ea5 PCI: rcar: Rename pcie-rcar.c to pcie-rcar-host.c
This commit renames pcie-rcar.c to pcie-rcar-host.c in preparation for
adding support for endpoint mode. CONFIG_PCIE_RCAR is kept so that arm64
defconfig change can be a separate patch.

With this patch both config options PCIE_RCAR and PCIE_RCAR_HOST will be
available but PCIE_RCAR internally selects PCIE_RCAR_HOST so that bisect
builds wont be affected.

Link: https://lore.kernel.org/r/1588854799-13710-2-git-send-email-prabhakar.mahadev-lad.rj@bp.renesas.com
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
2020-05-11 11:29:47 +01:00
Rob Herring
0c59c06a7c PCI: host-generic: Support building as modules
Enable building host-generic and its host-common dependency as a
module.

Link: https://lore.kernel.org/r/20200409234923.21598-3-robh@kernel.org
Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Acked-by: Will Deacon <will@kernel.org>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: Andrew Murray <amurray@thegoodpenguin.co.uk>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Will Deacon <will@kernel.org>
Cc: linux-pci@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
2020-05-01 16:29:27 +01:00
Hou Zhiqiang
03bdc38840 PCI: mobiveil: Modularize the Mobiveil PCIe Host Bridge IP driver
Modularize the Mobiveil PCIe host driver according to the abstraction of
Root Complex and Endpoint and move it into a new directory in order to
make it easier to reuse the driver functions to add new host drivers for
systems integrating the Mobiveil PCIe GPEX IP.

Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>
[lorenzo.pieralisi@arm.com: updated commit log]
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Andrew Murray <andrew.murray@arm.com>
2020-02-21 11:53:22 +00:00
Bjorn Helgaas
61d02c37fc Merge branch 'remotes/lorenzo/pci/brcmstb'
- Add brcmstb PCIe bindings for Raspberry Pi 4 (Jim Quinlan)

  - Add Broadcom STB PCIe host controller driver (Jim Quinlan)

  - Add MSI support for Broadcom STB PCIe host controller driver (Jim
    Quinlan)

* remotes/lorenzo/pci/brcmstb:
  PCI: brcmstb: Add MSI support
  PCI: brcmstb: Add Broadcom STB PCIe host controller driver
  dt-bindings: PCI: Add bindings for brcmstb's PCIe device
2020-01-29 17:00:03 -06:00
Jim Quinlan
40ca1bf580 PCI: brcmstb: Add MSI support
This adds MSI support to the Broadcom STB PCIe host controller. The MSI
controller is physically located within the PCIe block, however, there
is no reason why the MSI controller could not be moved elsewhere in the
future. MSIX is not supported by the HW.

Since the internal Brcmstb MSI controller is intertwined with the PCIe
controller, it is not its own platform device but rather part of the
PCIe platform device.

Signed-off-by: Jim Quinlan <james.quinlan@broadcom.com>
Co-developed-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Marc Zyngier <maz@kernel.org>
Reviewed-by: Andrew Murray <andrew.murray@arm.com>
2020-01-28 13:54:15 +00:00
Jim Quinlan
c045213703 PCI: brcmstb: Add Broadcom STB PCIe host controller driver
This adds a basic driver for Broadcom's STB PCIe controller, for now
aimed at Raspberry Pi 4's SoC, bcm2711.

Signed-off-by: Jim Quinlan <james.quinlan@broadcom.com>
Co-developed-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
[lorenzo.pieralisi@arm.com: updated brcm_pcie_get_rc_bar2_size_and_offset()according to https://lore.kernel.org/linux-pci/be8ddb33a7360af1815cf686f77f3f0913d02be3.camel@suse.de]
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Andrew Murray <andrew.murray@arm.com>
Reviewed-by: Jeremy Linton <jeremy.linton@arm.com>
2020-01-28 13:54:00 +00:00
Jon Derrick
962e329d88 PCI: vmd: Remove dma_map_ops overrides
Devices on the VMD domain use the VMD endpoint's requester ID and have been
relying on the VMD endpoint's DMA operations.  The problem with this was
that VMD domain devices would use the VMD endpoint's attributes when doing
DMA and IOMMU mapping.  We can be smarter about this by only using the VMD
endpoint when mapping and providing the correct child device's attributes
during DMA operations.

Remove the dma_map_ops redirect.

Link: https://lore.kernel.org/r/1579613871-301529-7-git-send-email-jonathan.derrick@intel.com
Signed-off-by: Jon Derrick <jonathan.derrick@intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Keith Busch <kbusch@kernel.org>
Acked-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
2020-01-24 14:58:59 -06:00
Bjorn Helgaas
7bd4c4a7b0 Merge branch 'remotes/lorenzo/pci/mmio-dma-ranges'
- Consolidate DT "dma-ranges" parsing and convert all host drivers to use
    shared parsing (Rob Herring)

* remotes/lorenzo/pci/mmio-dma-ranges:
  PCI: Make devm_of_pci_get_host_bridge_resources() static
  PCI: rcar: Use inbound resources for setup
  PCI: iproc: Use inbound resources for setup
  PCI: xgene: Use inbound resources for setup
  PCI: v3-semi: Use inbound resources for setup
  PCI: ftpci100: Use inbound resources for setup
  PCI: of: Add inbound resource parsing to helpers
  PCI: versatile: Enable COMPILE_TEST
  PCI: versatile: Remove usage of PHYS_OFFSET
  PCI: versatile: Use pci_parse_request_of_pci_ranges()
  PCI: xilinx-nwl: Use pci_parse_request_of_pci_ranges()
  PCI: xilinx: Use pci_parse_request_of_pci_ranges()
  PCI: xgene: Use pci_parse_request_of_pci_ranges()
  PCI: v3-semi: Use pci_parse_request_of_pci_ranges()
  PCI: rockchip: Drop storing driver private outbound resource data
  PCI: rockchip: Use pci_parse_request_of_pci_ranges()
  PCI: mobiveil: Use pci_parse_request_of_pci_ranges()
  PCI: mediatek: Use pci_parse_request_of_pci_ranges()
  PCI: iproc: Use pci_parse_request_of_pci_ranges()
  PCI: faraday: Use pci_parse_request_of_pci_ranges()
  PCI: dwc: Use pci_parse_request_of_pci_ranges()
  PCI: altera: Use pci_parse_request_of_pci_ranges()
  PCI: aardvark: Use pci_parse_request_of_pci_ranges()
  PCI: Export pci_parse_request_of_pci_ranges()
  resource: Add a resource_list_first_type helper

# Conflicts:
#	drivers/pci/controller/pcie-rcar.c
2019-11-28 08:54:53 -06:00
Tom Joseph
de80f95ccb PCI: cadence: Move all files to per-device cadence directory
Cadence core library files may be used by various platform drivers.
Add a new directory "cadence" to group all the Cadence core library files
and the platforms using Cadence core library.

Signed-off-by: Tom Joseph <tjoseph@cadence.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Andrew Murray <andrew.murray@arm.com>
2019-11-11 14:57:02 +00:00
Tom Joseph
bd22885aa1 PCI: cadence: Refactor driver to use as a core library
Cadence PCIe host and endpoint IP may be embedded into a variety of
SoCs/platforms. Let's extract the platform related APIs/Structures in the
current driver to a separate file (pcie-cadence-plat.c), such that the
common functionality can be used by future platforms.

Signed-off-by: Tom Joseph <tjoseph@cadence.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Andrew Murray <andrew.murray@arm.com>
2019-11-11 14:56:54 +00:00
Rob Herring
ecf8fd6d91 PCI: versatile: Enable COMPILE_TEST
Since commit a574795bc3 ("PCI: generic,versatile: Remove unused
pci_sys_data structures") the build dependency on ARM is gone, so let's
enable COMPILE_TEST for versatile.

Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Andrew Murray <andrew.murray@arm.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: Bjorn Helgaas <bhelgaas@google.com>
2019-10-29 10:52:29 +00:00
Haiyang Zhang
348dd93e40 PCI: hv: Add a Hyper-V PCI interface driver for software backchannel interface
This interface driver is a helper driver allows other drivers to
have a common interface with the Hyper-V PCI frontend driver.

Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-08-22 00:25:12 -07:00
Ley Foon Tan
c7ddfd3514 PCI: altera-msi: Allow building as module
Altera MSI IP is a soft IP and is only available after
an FPGA image (with design containing it) is programmed.

Make driver modulable to support use case FPGA image is programmed the
after kernel has booted, so that the driver can be loaded upon request.

Signed-off-by: Ley Foon Tan <ley.foon.tan@intel.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
2019-05-30 15:34:54 +01:00
Ley Foon Tan
ec15c4d0d5 PCI: altera: Allow building as module
Altera PCIe Rootport IP is a soft IP and is only available after
an FPGA image (whose design contains it) is programmed.

Make driver modulable to support use cases when FPGA image is
programmed after the kernel has booted, so that the driver
can be loaded upon request.

Signed-off-by: Ley Foon Tan <ley.foon.tan@intel.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
2019-05-30 15:28:01 +01:00
Christoph Hellwig
15854edd19 x86/pci: Clean up usage of X86_DEV_DMA_OPS
We have supported per-device dma_map_ops in generic code for a long
time, and this symbol just guards the inclusion of the dma_map_ops
registry used for vmd.  Stop enabling it for anything but vmd.

No change in functionality intended.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/20190410080220.21705-3-hch@lst.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2019-04-24 13:12:05 +02:00