linux-kernel - [PATCH v4 4/7] PCI: Add fwnode_handle to pci

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Message-Id: <1446162376-43419-5-git-send-email-jakeo@microsoft.com>
Date:	Thu, 29 Oct 2015 23:46:13 +0000
From:	jakeo@...rosoft.com
To:	gregkh@...uxfoundation.org, kys@...rosoft.com,
	linux-kernel@...r.kernel.org, devel@...uxdriverproject.org,
	olaf@...fle.de, apw@...onical.com, vkuznets@...hat.com,
	tglx@...hat.com, haiyangz@...rosoft.com, marc.zyngier@....com,
	jiang.liu@...ux.intel.com, bhelgaas@...gle.com,
	linux-pci@...r.kernel.org
Cc:	Jake Oshins <jakeo@...rosoft.com>
Subject: [PATCH v4 4/7] PCI: Add fwnode_handle to pci_sysdata

From: Jake Oshins <jakeo@...rosoft.com>

This patch adds an fwnode_handle to struct pci_sysdata, which is
used by the next patch in the series when trying to locate an
IRQ domain associated with a root PCI bus.

Signed-off-by: Jake Oshins <jakeo@...rosoft.com>
---
 arch/x86/include/asm/pci.h | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/arch/x86/include/asm/pci.h b/arch/x86/include/asm/pci.h
index 4625943..10213a1 100644
--- a/arch/x86/include/asm/pci.h
+++ b/arch/x86/include/asm/pci.h
@@ -20,6 +20,9 @@ struct pci_sysdata {
 #ifdef CONFIG_X86_64
 	void		*iommu;		/* IOMMU private data */
 #endif
+#ifdef CONFIG_PCI_MSI_IRQ_DOMAIN
+	void		*fwnode;	/* IRQ domain for MSI assignment */
+#endif
 };
 
 extern int pci_routeirq;
@@ -41,6 +44,14 @@ static inline int pci_proc_domain(struct pci_bus *bus)
 }
 #endif
 
+#ifdef CONFIG_PCI_MSI_IRQ_DOMAIN
+static inline void *pci_fwnode(struct pci_bus *bus)
+{
+	struct pci_sysdata *sd = bus->sysdata;
+	return sd->fwnode;
+}
+#endif
+
 /* Can be used to override the logic in pci_scan_bus for skipping
    already-configured bus numbers - to be used for buggy BIOSes
    or architectures with incomplete PCI setup by the loader */
-- 
1.9.1

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