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Message-Id: <1443811443-18878-2-git-send-email-ddaney.cavm@gmail.com>
Date: Fri, 2 Oct 2015 11:43:59 -0700
From: David Daney <ddaney.cavm@...il.com>
To: linux-kernel@...r.kernel.org, Bjorn Helgaas <bhelgaas@...gle.com>,
linux-pci@...r.kernel.org, Will Deacon <will.deacon@....com>,
Rob Herring <robh+dt@...nel.org>,
Pawel Moll <pawel.moll@....com>,
Mark Rutland <mark.rutland@....com>,
Ian Campbell <ijc+devicetree@...lion.org.uk>,
Kumar Gala <galak@...eaurora.org>,
linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
Marc Zyngier <marc.zyngier@....com>
Cc: David Daney <david.daney@...ium.com>
Subject: [PATCH v4 1/5] PCI: Add pci_bus_fixup_irqs().
From: David Daney <david.daney@...ium.com>
pci_bus_fixup_irqs() works like pci_fixup_irqs(), except it only does
the fixups for devices on the specified bus.
Follow-on patch will use the new function.
Signed-off-by: David Daney <david.daney@...ium.com>
---
No change from v2.
drivers/pci/setup-irq.c | 30 ++++++++++++++++++++++++++++++
include/linux/pci.h | 4 ++++
2 files changed, 34 insertions(+)
diff --git a/drivers/pci/setup-irq.c b/drivers/pci/setup-irq.c
index 95c225b..189ad17 100644
--- a/drivers/pci/setup-irq.c
+++ b/drivers/pci/setup-irq.c
@@ -66,3 +66,33 @@ void pci_fixup_irqs(u8 (*swizzle)(struct pci_dev *, u8 *),
pdev_fixup_irq(dev, swizzle, map_irq);
}
EXPORT_SYMBOL_GPL(pci_fixup_irqs);
+
+struct pci_bus_fixup_cb_info {
+ u8 (*swizzle)(struct pci_dev *, u8 *);
+ int (*map_irq)(const struct pci_dev *, u8, u8);
+};
+
+static int pci_bus_fixup_irq_cb(struct pci_dev *dev, void *arg)
+{
+ struct pci_bus_fixup_cb_info *info = arg;
+
+ pdev_fixup_irq(dev, info->swizzle, info->map_irq);
+ return 0;
+}
+
+/*
+ * Fixup the irqs only for devices on the given bus using supplied
+ * swizzle and map_irq function pointers
+ */
+void pci_bus_fixup_irqs(struct pci_bus *bus,
+ u8 (*swizzle)(struct pci_dev *, u8 *),
+ int (*map_irq)(const struct pci_dev *, u8, u8))
+{
+ struct pci_bus_fixup_cb_info info;
+
+ info.swizzle = swizzle;
+ info.map_irq = map_irq;
+ pci_walk_bus(bus, pci_bus_fixup_irq_cb, &info);
+
+}
+EXPORT_SYMBOL_GPL(pci_bus_fixup_irqs);
diff --git a/include/linux/pci.h b/include/linux/pci.h
index e90eb22..b505b50 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -1120,6 +1120,10 @@ void pdev_enable_device(struct pci_dev *);
int pci_enable_resources(struct pci_dev *, int mask);
void pci_fixup_irqs(u8 (*)(struct pci_dev *, u8 *),
int (*)(const struct pci_dev *, u8, u8));
+void pci_bus_fixup_irqs(struct pci_bus *,
+ u8 (*)(struct pci_dev *, u8 *),
+ int (*)(const struct pci_dev *, u8, u8));
+
#define HAVE_PCI_REQ_REGIONS 2
int __must_check pci_request_regions(struct pci_dev *, const char *);
int __must_check pci_request_regions_exclusive(struct pci_dev *, const char *);
--
1.9.1
--
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