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linux/drivers/pci/host
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Jason Gunthorpe 7ac8a10c8a PCI: mvebu: Handle changes to the bridge windows while enabled 
[ Upstream commit d9bf28e265 ]

The PCI core will write to the bridge window config multiple times while
they are enabled.  This can lead to mbus failures like this:

 mvebu_mbus: cannot add window '4:e8', conflicts with another window
 mvebu-pcie mbus:pex@e0000000: Could not create MBus window at [mem 0xe0000000-0xe00fffff]: -22

For me this is happening during a hotplug cycle.  The PCI core is not
changing the values, just writing them twice while active.

The patch addresses the general case of any change to an active window, but
not atomically.  The code is slightly refactored so io and mem can share
more of the window logic.

Signed-off-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Jason Cooper <jason@lakedaemon.net>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
History 2017-11-15 15:53:11 +01:00
..
Kconfig Merge branch 'pci/host-vmd' into next 2016-10-05 14:00:21 -05:00
Makefile Merge branch 'pci/host-vmd' into next 2016-10-05 14:00:21 -05:00
pci-aardvark.c PCI: aardvark: Remove unused platform data 2016-10-11 19:44:04 -05:00
pci-dra7xx.c PCI: dra7xx: Reorder struct dra7xx_pcie 2016-10-12 00:05:54 -05:00
pci-exynos.c PCI: exynos: Reorder struct exynos_pcie 2016-10-11 21:30:52 -05:00
pci-host-common.c Merge branch 'pci/enumeration' into next 2016-10-03 09:43:19 -05:00
pci-host-generic.c Merge branches 'pci/demodularize-hosts' and 'pci/host-request-windows' into next 2016-08-01 12:23:57 -05:00
pci-hyperv.c PCI: hv: Specify CPU_AFFINITY_ALL for MSI affinity when >= 32 CPUs 2017-05-25 15:44:47 +02:00
pci-imx6.c PCI: imx6: Remove unused return values 2016-10-11 22:26:28 -05:00
pci-keystone-dw.c PCI: keystone: Add app register accessors 2016-10-11 22:58:34 -05:00
pci-keystone.c PCI: keystone: Pass keystone_pcie, not address, to IRQ functions 2016-10-11 22:56:46 -05:00
pci-keystone.h PCI: keystone: Reorder struct keystone_pcie 2016-10-11 22:58:43 -05:00
pci-layerscape.c PCI: layerscape: Fix drvdata usage before assignment 2016-10-17 07:58:18 -05:00
pci-mvebu.c PCI: mvebu: Handle changes to the bridge windows while enabled 2017-11-15 15:53:11 +01:00
pci-rcar-gen2.c PCI: rcar-gen2: Add local struct device pointers 2016-10-11 23:34:57 -05:00
pci-tegra.c PCI: tegra: Remove unused platform data 2016-10-11 23:45:32 -05:00
pci-thunder-ecam.c Merge branches 'pci/demodularize-hosts' and 'pci/host-request-windows' into next 2016-08-01 12:23:57 -05:00
pci-thunder-pem.c PCI: thunder-pem: Factor out resource lookup 2017-04-12 12:41:17 +02:00
pci-versatile.c PCI: versatile: Fix pci_remap_iospace() failure path 2016-09-06 12:41:15 -05:00
pci-xgene-msi.c irqdomain/msi: Use fwnode instead of of_node 2015-10-13 19:01:25 +02:00
pci-xgene.c PCI: xgene: Add register accessors 2016-10-11 23:54:31 -05:00
pcie-altera-msi.c Merge branches 'pci/host-aardvark', 'pci/host-altera', 'pci/host-artpec', 'pci/host-designware', 'pci/host-hv', 'pci/host-keystone', 'pci/host-rcar', 'pci/host-rockchip', 'pci/host-tegra' and 'pci/host-xilinx' into next 2016-10-05 13:59:14 -05:00
pcie-altera.c PCI: altera: Fix TLP_CFG_DW0 for TLP write 2017-03-12 06:41:47 +01:00
pcie-armada8k.c PCI: armada: Reorder struct armada8k_pcie 2016-10-11 20:33:01 -05:00
pcie-artpec6.c PCI: artpec6: Add resource name comments 2016-10-11 20:49:40 -05:00
pcie-designware-plat.c PCI: designware-plat: Update author email 2016-11-16 16:16:40 -06:00
pcie-designware.c PCI: designware: Check for iATU unroll only on platforms that use ATU 2017-01-26 08:24:38 +01:00
pcie-designware.h PCI: designware: Export dw_pcie_readl_rc(), dw_pcie_writel_rc() 2016-10-11 08:31:52 -05:00
pcie-hisi.c PCI: hisi: Reorder struct hisi_pcie 2016-10-12 00:08:32 -05:00
pcie-iproc-bcma.c PCI: iproc: Save host bridge window resource in struct iproc_pcie 2017-04-08 09:30:33 +02:00
pcie-iproc-msi.c PCI: iproc: Add iProc PCIe MSI support 2016-01-06 18:04:35 -06:00
pcie-iproc-platform.c PCI: iproc: Save host bridge window resource in struct iproc_pcie 2017-04-08 09:30:33 +02:00
pcie-iproc.c PCI: iproc: Hard-code PCIe capability offset instead of searching 2016-10-11 22:44:22 -05:00
pcie-iproc.h PCI: iproc: Save host bridge window resource in struct iproc_pcie 2017-04-08 09:30:33 +02:00
pcie-qcom.c PCI: qcom: Fix pp->dev usage before assignment 2016-10-26 14:46:39 -05:00
pcie-rcar.c PCI: rcar: Remove DRV_NAME macro 2016-10-11 23:34:49 -05:00
pcie-rockchip.c PCI: rockchip: Use normal register bank for config accessors 2017-07-27 15:08:00 -07:00
pcie-spear13xx.c PCI: spear: Clean up struct device usage 2016-10-11 08:45:47 -05:00
pcie-xilinx-nwl.c PCI: xilinx-nwl: Remove unused platform data 2016-10-12 00:00:51 -05:00
pcie-xilinx.c PCI: xilinx: Removed unused xilinx_pcie_assign_msi() argument 2016-10-12 00:00:00 -05:00
vmd.c PCI changes for the v4.9 merge window: 2016-10-07 11:46:37 -07:00