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Subject[PATCH RESEND v2 1/3] PCI: Add fwnode_handle to pci_sysdata
Date
From: Jake Oshins <jakeo@microsoft.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@microsoft.com>
---
arch/x86/include/asm/pci.h | 15 +++++++++++++++
include/linux/pci.h | 4 ++++
2 files changed, 19 insertions(+)

diff --git a/arch/x86/include/asm/pci.h b/arch/x86/include/asm/pci.h
index 4625943..6fc3c7c 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;
@@ -32,6 +35,7 @@ extern int noioapicreroute;
static inline int pci_domain_nr(struct pci_bus *bus)
{
struct pci_sysdata *sd = bus->sysdata;
+
return sd->domain;
}

@@ -41,6 +45,17 @@ static inline int pci_proc_domain(struct pci_bus *bus)
}
#endif

+#ifdef CONFIG_PCI_MSI_IRQ_DOMAIN
+static inline void *_pci_root_bus_fwnode(struct pci_bus *bus)
+{
+ struct pci_sysdata *sd = bus->sysdata;
+
+ return sd->fwnode;
+}
+
+#define pci_root_bus_fwnode _pci_root_bus_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 */
diff --git a/include/linux/pci.h b/include/linux/pci.h
index 27df4a6..1bb44af 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -1515,6 +1515,10 @@ static inline int pci_get_new_domain_nr(void) { return -ENOSYS; }

#include <asm/pci.h>

+#ifndef pci_root_bus_fwnode
+#define pci_root_bus_fwnode(bus) NULL
+#endif
+
/* these helpers provide future and backwards compatibility
* for accessing popular PCI BAR info */
#define pci_resource_start(dev, bar) ((dev)->resource[(bar)].start)
--
1.9.1
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