[PATCH kernel 2/3] pci-ioda: Set PCI_BUS_FLAGS_MSI_REMAP for IODA host bridge

From	Alexey Kardashevskiy <aik@ozlabs.ru>
Newsgroups	linux.kernel
Subject	[PATCH kernel 2/3] pci-ioda: Set PCI_BUS_FLAGS_MSI_REMAP for IODA host bridge
Date	2017-06-15 07:50 +0200
Message-ID	<tSvPj-6SP-1@gated-at.bofh.it> (permalink)
References	<tSvPj-6SP-3@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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From: Yongji Xie <elohimes@gmail.com>

Any IODA host bridge have the capability of IRQ remapping.
So we set PCI_BUS_FLAGS_MSI_REMAP when this kind of host birdge
is detected.

Signed-off-by: Yongji Xie <xyjxie@linux.vnet.ibm.com>
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
---
 arch/powerpc/platforms/powernv/pci-ioda.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/arch/powerpc/platforms/powernv/pci-ioda.c b/arch/powerpc/platforms/powernv/pci-ioda.c
index 283caf1070c9..b6bda1918273 100644
--- a/arch/powerpc/platforms/powernv/pci-ioda.c
+++ b/arch/powerpc/platforms/powernv/pci-ioda.c
@@ -3177,6 +3177,12 @@ static void pnv_pci_ioda_fixup(void)
 #endif
 }
 
+int pnv_pci_ioda_root_bridge_prepare(struct pci_host_bridge *bridge)
+{
+	bridge->bus->bus_flags |= PCI_BUS_FLAGS_MSI_REMAP;
+	return 0;
+}
+
 /*
  * Returns the alignment for I/O or memory windows for P2P
  * bridges. That actually depends on how PEs are segmented.
@@ -3861,6 +3867,8 @@ static void __init pnv_pci_init_ioda_phb(struct device_node *np,
 	 */
 	ppc_md.pcibios_fixup = pnv_pci_ioda_fixup;
 
+	ppc_md.pcibios_root_bridge_prepare = pnv_pci_ioda_root_bridge_prepare;
+
 	if (phb->type == PNV_PHB_NPU) {
 		hose->controller_ops = pnv_npu_ioda_controller_ops;
 	} else {
-- 
2.11.0

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[PATCH kernel 2/3] pci-ioda: Set PCI_BUS_FLAGS_MSI_REMAP for IODA host bridge Alexey Kardashevskiy <aik@ozlabs.ru> - 2017-06-15 07:50 +0200
  Re: [PATCH kernel 2/3] pci-ioda: Set PCI_BUS_FLAGS_MSI_REMAP for IODA host bridge Michael Ellerman <mpe@ellerman.id.au> - 2017-06-15 11:30 +0200
    Re: [PATCH kernel 2/3] pci-ioda: Set PCI_BUS_FLAGS_MSI_REMAP for  IODA host bridge Benjamin Herrenschmidt <benh@kernel.crashing.org> - 2017-06-15 13:00 +0200

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