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| author |   Marc Zyngier <maz@kernel.org> | 2021-03-30 16:11:36 +0100 |
|---|---|---|
| committer |   Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> | 2021-04-20 14:11:21 +0100 |
| commit | 313b64c3ae52bc8e953319077204cf1d286a8a99 (patch) | |
| tree | 449a2fd47d2e9890b6ab93eb1e6720aa3f9f4ac7 /drivers/pci/controller/Kconfig | |
| parent | PCI: xilinx: Don't allocate extra memory for the MSI capture address (diff) | |
| download | linux-dev-313b64c3ae52bc8e953319077204cf1d286a8a99.tar.xz linux-dev-313b64c3ae52bc8e953319077204cf1d286a8a99.zip | |
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>
Diffstat (limited to 'drivers/pci/controller/Kconfig')
| -rw-r--r-- | drivers/pci/controller/Kconfig | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/pci/controller/Kconfig b/drivers/pci/controller/Kconfig index 5cc07d28a3a0..60045f7aafc5 100644 --- a/drivers/pci/controller/Kconfig +++ b/drivers/pci/controller/Kconfig @@ -86,7 +86,7 @@ config PCI_HOST_GENERIC config PCIE_XILINX bool "Xilinx AXI PCIe host bridge support" depends on OF || COMPILE_TEST - select PCI_MSI_ARCH_FALLBACKS + depends on PCI_MSI_IRQ_DOMAIN help Say 'Y' here if you want kernel to support the Xilinx AXI PCIe Host Bridge driver. |