diff options
| author | Marc Zyngier <maz@kernel.org> | 2021-09-29 19:38:41 +0300 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2021-11-05 00:29:30 +0300 |
| commit | 946d619fa25f55483206befb035fed6a99fbe7b5 (patch) | |
| tree | 808c519bd2557ea4061f34426800d59d94d8875d /drivers/pci/controller/Kconfig | |
| parent | 476c41ed4597512f9da334be8ddf2fb2262d3057 (diff) | |
| download | linux-946d619fa25f55483206befb035fed6a99fbe7b5.tar.xz | |
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>
Diffstat (limited to 'drivers/pci/controller/Kconfig')
| -rw-r--r-- | drivers/pci/controller/Kconfig | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/pci/controller/Kconfig b/drivers/pci/controller/Kconfig index 953d9acc031f..5661d4a84832 100644 --- a/drivers/pci/controller/Kconfig +++ b/drivers/pci/controller/Kconfig @@ -312,6 +312,11 @@ config PCIE_HISI_ERR Say Y here if you want error handling support for the PCIe controller's errors on HiSilicon HIP SoCs +config PCIE_APPLE_MSI_DOORBELL_ADDR + hex + default 0xfffff000 + depends on PCIE_APPLE + config PCIE_APPLE tristate "Apple PCIe controller" depends on ARCH_APPLE || COMPILE_TEST |