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authorMichael S. Tsirkin <mst@redhat.com>2012-01-30 00:20:48 +0200
committerMichael S. Tsirkin <mst@redhat.com>2012-01-31 23:19:47 +0200
commitb923650b84068b74b6df838aa8f9b2a350171de6 (patch)
treed6d366da5427816210dc15c7c401e4a7910092c4 /include/asm-generic
parent0a9626575400879d1d5e6bc8768188b938d7c501 (diff)
downloadlinux-linaro-stable-b923650b84068b74b6df838aa8f9b2a350171de6.tar.gz
lib: add NO_GENERIC_PCI_IOPORT_MAP
Some architectures need to override the way IO port mapping is done on PCI devices. Supply a generic macro that calls ioport_map, and make it possible for architectures to override. Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Acked-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'include/asm-generic')
-rw-r--r--include/asm-generic/pci_iomap.h10
1 files changed, 10 insertions, 0 deletions
diff --git a/include/asm-generic/pci_iomap.h b/include/asm-generic/pci_iomap.h
index 8de4b73e19e2..e58fcf891370 100644
--- a/include/asm-generic/pci_iomap.h
+++ b/include/asm-generic/pci_iomap.h
@@ -15,6 +15,16 @@ struct pci_dev;
#ifdef CONFIG_PCI
/* Create a virtual mapping cookie for a PCI BAR (memory or IO) */
extern void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long max);
+/* Create a virtual mapping cookie for a port on a given PCI device.
+ * Do not call this directly, it exists to make it easier for architectures
+ * to override */
+#ifdef CONFIG_NO_GENERIC_PCI_IOPORT_MAP
+extern void __iomem *__pci_ioport_map(struct pci_dev *dev, unsigned long port,
+ unsigned int nr);
+#else
+#define __pci_ioport_map(dev, port, nr) ioport_map((port), (nr))
+#endif
+
#else
static inline void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long max)
{