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PCI/MSI: irqchip: Fix PCI_MSI dependencies

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The PCI_MSI symbol is used inconsistently throughout the tree, with some
drivers using 'select' and others using 'depends on', or using conditional
selects.  This keeps causing problems; the latest one is a result of
ARCH_ALPINE using a 'select' statement to enable its platform-specific MSI
driver without enabling MSI:

  warning: (ARCH_ALPINE) selects ALPINE_MSI which has unmet direct dependencies (PCI && PCI_MSI)
  drivers/irqchip/irq-alpine-msi.c:104:15: error: variable 'alpine_msix_domain_info' has initializer but incomplete type
   static struct msi_domain_info alpine_msix_domain_info = {
		 ^~~~~~~~~~~~~~~
  drivers/irqchip/irq-alpine-msi.c:105:2: error: unknown field 'flags' specified in initializer
    .flags = MSI_FLAG_USE_DEF_DOM_OPS | MSI_FLAG_USE_DEF_CHIP_OPS |
    ^
  drivers/irqchip/irq-alpine-msi.c:105:11: error: 'MSI_FLAG_USE_DEF_DOM_OPS' undeclared here (not in a function)
    .flags = MSI_FLAG_USE_DEF_DOM_OPS | MSI_FLAG_USE_DEF_CHIP_OPS |
	     ^~~~~~~~~~~~~~~~~~~~~~~~

There is little reason to enable PCI support for a platform that uses MSI
but then leave MSI disabled at compile time.

Select PCI_MSI from irqchips that implement MSI, and make PCI host bridges
that use MSI on ARM depend on PCI_MSI_IRQ_DOMAIN.

For all three architectures that support PCI_MSI_IRQ_DOMAIN (ARM, ARM64,
X86), enable it by default whenever MSI is enabled.

[bhelgaas: changelog, omit crypto config change]
Suggested-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
This commit is contained in:
Arnd Bergmann 2016-06-15 15:47:33 -05:00 committed by Bjorn Helgaas
parent af8c34ce6a
commit 3ee803641e
5 changed files with 31 additions and 24 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
arch/arm/Kconfig
View File

@ -715,7 +715,7 @@ config ARCH_VIRT
depends on ARCH_MULTI_V7
select ARM_AMBA
select ARM_GIC
select ARM_GIC_V2M if PCI_MSI
select ARM_GIC_V2M if PCI
select ARM_GIC_V3
select ARM_PSCI
select HAVE_ARM_ARCH_TIMER

4
arch/arm64/Kconfig
View File

@ -20,9 +20,9 @@ config ARM64
select ARM_ARCH_TIMER
select ARM_GIC
select AUDIT_ARCH_COMPAT_GENERIC
select ARM_GIC_V2M if PCI_MSI
select ARM_GIC_V2M if PCI
select ARM_GIC_V3
select ARM_GIC_V3_ITS if PCI_MSI
select ARM_GIC_V3_ITS if PCI
select ARM_PSCI_FW
select BUILDTIME_EXTABLE_SORT
select CLONE_BACKWARDS

18
drivers/irqchip/Kconfig
View File

@ -15,9 +15,9 @@ config ARM_GIC_MAX_NR
config ARM_GIC_V2M
bool
depends on ARM_GIC
depends on PCI && PCI_MSI
select PCI_MSI_IRQ_DOMAIN
depends on PCI
select ARM_GIC
select PCI_MSI
config GIC_NON_BANKED
bool
@ -31,7 +31,8 @@ config ARM_GIC_V3
config ARM_GIC_V3_ITS
bool
select PCI_MSI_IRQ_DOMAIN
depends on PCI
depends on PCI_MSI
config ARM_NVIC
bool
@ -56,13 +57,13 @@ config ARM_VIC_NR
config ARMADA_370_XP_IRQ
bool
select GENERIC_IRQ_CHIP
select PCI_MSI_IRQ_DOMAIN if PCI_MSI
select PCI_MSI if PCI
config ALPINE_MSI
bool
depends on PCI && PCI_MSI
depends on PCI
select PCI_MSI
select GENERIC_IRQ_CHIP
select PCI_MSI_IRQ_DOMAIN
config ATMEL_AIC_IRQ
bool
@ -111,7 +112,6 @@ config HISILICON_IRQ_MBIGEN
bool
select ARM_GIC_V3
select ARM_GIC_V3_ITS
select GENERIC_MSI_IRQ_DOMAIN
config IMGPDC_IRQ
bool
@ -244,12 +244,10 @@ config IRQ_MXS
config MVEBU_ODMI
bool
select GENERIC_MSI_IRQ_DOMAIN
config LS_SCFG_MSI
def_bool y if SOC_LS1021A || ARCH_LAYERSCAPE
depends on PCI && PCI_MSI
select PCI_MSI_IRQ_DOMAIN
config PARTITION_PERCPU
bool

2
drivers/pci/Kconfig
View File

@ -25,7 +25,7 @@ config PCI_MSI
If you don't know what to do here, say Y.
config PCI_MSI_IRQ_DOMAIN
bool
def_bool ARM || ARM64 || X86
depends on PCI_MSI
select GENERIC_MSI_IRQ_DOMAIN

29
drivers/pci/host/Kconfig
View File

@ -3,8 +3,9 @@ menu "PCI host controller drivers"
config PCI_DRA7XX
bool "TI DRA7xx PCIe controller"
select PCIE_DW
depends on OF && HAS_IOMEM && TI_PIPE3
depends on PCI_MSI_IRQ_DOMAIN
select PCIE_DW
help
Enables support for the PCIe controller in the DRA7xx SoC. There
are two instances of PCIe controller in DRA7xx. This controller can
@ -20,7 +21,7 @@ config PCI_MVEBU
config PCIE_XILINX_NWL
bool "NWL PCIe Core"
depends on ARCH_ZYNQMP
select PCI_MSI_IRQ_DOMAIN if PCI_MSI
depends on PCI_MSI_IRQ_DOMAIN
help
Say 'Y' here if you want kernel support for Xilinx
NWL PCIe controller. The controller can act as Root Port
@ -29,6 +30,7 @@ config PCIE_XILINX_NWL
config PCIE_DW_PLAT
bool "Platform bus based DesignWare PCIe Controller"
depends on PCI_MSI_IRQ_DOMAIN
select PCIE_DW
---help---
This selects the DesignWare PCIe controller support. Select this if
@ -40,16 +42,19 @@ config PCIE_DW_PLAT
config PCIE_DW
bool
depends on PCI_MSI_IRQ_DOMAIN
config PCI_EXYNOS
bool "Samsung Exynos PCIe controller"
depends on SOC_EXYNOS5440
depends on PCI_MSI_IRQ_DOMAIN
select PCIEPORTBUS
select PCIE_DW
config PCI_IMX6
bool "Freescale i.MX6 PCIe controller"
depends on SOC_IMX6Q
depends on PCI_MSI_IRQ_DOMAIN
select PCIEPORTBUS
select PCIE_DW
@ -72,8 +77,7 @@ config PCI_RCAR_GEN2
config PCIE_RCAR
bool "Renesas R-Car PCIe controller"
depends on ARCH_RENESAS || (ARM && COMPILE_TEST)
select PCI_MSI
select PCI_MSI_IRQ_DOMAIN
depends on PCI_MSI_IRQ_DOMAIN
help
Say Y here if you want PCIe controller support on R-Car SoCs.
@ -92,6 +96,7 @@ config PCI_HOST_GENERIC
config PCIE_SPEAR13XX
bool "STMicroelectronics SPEAr PCIe controller"
depends on ARCH_SPEAR13XX
depends on PCI_MSI_IRQ_DOMAIN
select PCIEPORTBUS
select PCIE_DW
help
@ -100,6 +105,7 @@ config PCIE_SPEAR13XX
config PCI_KEYSTONE
bool "TI Keystone PCIe controller"
depends on ARCH_KEYSTONE
depends on PCI_MSI_IRQ_DOMAIN
select PCIE_DW
select PCIEPORTBUS
help
@ -120,7 +126,6 @@ config PCI_XGENE
depends on ARCH_XGENE
depends on OF
select PCIEPORTBUS
select PCI_MSI_IRQ_DOMAIN if PCI_MSI
help
Say Y here if you want internal PCI support on APM X-Gene SoC.
There are 5 internal PCIe ports available. Each port is GEN3 capable
@ -128,7 +133,8 @@ config PCI_XGENE
config PCI_XGENE_MSI
bool "X-Gene v1 PCIe MSI feature"
depends on PCI_XGENE && PCI_MSI
depends on PCI_XGENE
depends on PCI_MSI_IRQ_DOMAIN
default y
help
Say Y here if you want PCIe MSI support for the APM X-Gene v1 SoC.
@ -137,6 +143,7 @@ config PCI_XGENE_MSI
config PCI_LAYERSCAPE
bool "Freescale Layerscape PCIe controller"
depends on OF && (ARM || ARCH_LAYERSCAPE)
depends on PCI_MSI_IRQ_DOMAIN
select PCIE_DW
select MFD_SYSCON
help
@ -177,8 +184,7 @@ config PCIE_IPROC_BCMA
config PCIE_IPROC_MSI
bool "Broadcom iProc PCIe MSI support"
depends on PCIE_IPROC_PLATFORM || PCIE_IPROC_BCMA
depends on PCI_MSI
select PCI_MSI_IRQ_DOMAIN
depends on PCI_MSI_IRQ_DOMAIN
default ARCH_BCM_IPROC
help
Say Y here if you want to enable MSI support for Broadcom's iProc
@ -195,8 +201,8 @@ config PCIE_ALTERA
config PCIE_ALTERA_MSI
bool "Altera PCIe MSI feature"
depends on PCIE_ALTERA && PCI_MSI
select PCI_MSI_IRQ_DOMAIN
depends on PCIE_ALTERA
depends on PCI_MSI_IRQ_DOMAIN
help
Say Y here if you want PCIe MSI support for the Altera FPGA.
This MSI driver supports Altera MSI to GIC controller IP.
@ -204,6 +210,7 @@ config PCIE_ALTERA_MSI
config PCI_HISI
depends on OF && ARM64
bool "HiSilicon Hip05 and Hip06 SoCs PCIe controllers"
depends on PCI_MSI_IRQ_DOMAIN
select PCIEPORTBUS
select PCIE_DW
help
@ -213,6 +220,7 @@ config PCI_HISI
config PCIE_QCOM
bool "Qualcomm PCIe controller"
depends on ARCH_QCOM && OF
depends on PCI_MSI_IRQ_DOMAIN
select PCIE_DW
select PCIEPORTBUS
help
@ -237,6 +245,7 @@ config PCI_HOST_THUNDER_ECAM
config PCIE_ARMADA_8K
bool "Marvell Armada-8K PCIe controller"
depends on ARCH_MVEBU
depends on PCI_MSI_IRQ_DOMAIN
select PCIE_DW
select PCIEPORTBUS
help