From: Paul Walmsley <paul.walmsley@sifive.com>
To: linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org
Cc: Wesley Terpstra <wesley@sifive.com>, Paul Walmsley <paul@pwsan.com>
Subject: [PATCH] riscv: include generic support for MSI irqdomains
Date: Mon, 20 May 2019 11:25:28 -0700 [thread overview]
Message-ID: <20190520182528.10627-1-paul.walmsley@sifive.com> (raw)
Some RISC-V systems include PCIe host controllers that support PCIe
message-signaled interrupts. For this to work on Linux, we need to
enable PCI_MSI_IRQ_DOMAIN and define struct msi_alloc_info. Support
for the latter is enabled by including the architecture-generic msi.h
include.
Based on a patch from Wesley Terpstra <wesley@sifive.com>:
https://github.com/riscv/riscv-linux/commit/7d55f38fb79f459d2e88bcee7e147796400cafa8
Signed-off-by: Paul Walmsley <paul.walmsley@sifive.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
Cc: Wesley Terpstra <wesley@sifive.com>
---
arch/riscv/include/asm/Kbuild | 1 +
drivers/pci/Kconfig | 2 +-
2 files changed, 2 insertions(+), 1 deletion(-)
diff --git a/arch/riscv/include/asm/Kbuild b/arch/riscv/include/asm/Kbuild
index 3d019e062c6f..b0a9fa34be5a 100644
--- a/arch/riscv/include/asm/Kbuild
+++ b/arch/riscv/include/asm/Kbuild
@@ -20,6 +20,7 @@ generic-y += kvm_para.h
generic-y += local.h
generic-y += local64.h
generic-y += mm-arch-hooks.h
+generic-y += msi.h
generic-y += percpu.h
generic-y += preempt.h
generic-y += sections.h
diff --git a/drivers/pci/Kconfig b/drivers/pci/Kconfig
index 2ab92409210a..beb3408a0272 100644
--- a/drivers/pci/Kconfig
+++ b/drivers/pci/Kconfig
@@ -52,7 +52,7 @@ config PCI_MSI
If you don't know what to do here, say Y.
config PCI_MSI_IRQ_DOMAIN
- def_bool ARC || ARM || ARM64 || X86
+ def_bool ARC || ARM || ARM64 || X86 || RISCV
depends on PCI_MSI
select GENERIC_MSI_IRQ_DOMAIN
--
2.20.1
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next reply other threads:[~2019-05-20 18:25 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-20 18:25 Paul Walmsley [this message]
2019-05-21 6:35 ` [PATCH] riscv: include generic support for MSI irqdomains Christoph Hellwig
2019-05-21 8:11 ` Paul Walmsley
2019-05-21 18:25 ` Wesley Terpstra
2019-05-21 19:01 ` Paul Walmsley
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