From: Alan Cox <alan@xxxxxxxxxxxxxxxxxxx>
Add an iomap_name() function which translates an I/O map into a string to
print.
Use it for the Libata layer
For now we use 0xXXXX for I/O and 0xXXXXXXXX for MMIO. I'm assuming that
eventually some other platforms will want to use their own iomap_name() and
we can add ARCH_HAVE_IOMAP_NAME later as such a platform needs it.
Signed-off-by: Alan Cox <alan@xxxxxxxxxx>
Cc: Jeff Garzik <jeff@xxxxxxxxxx>
Cc: Tejun Heo <htejun@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/asm-generic/iomap.h | 5 +++++
lib/iomap.c | 12 ++++++++++++
2 files changed, 17 insertions(+)
diff -puN include/asm-generic/iomap.h~iomap-sort-out-the-broken-address-reporting-caused-by-the-iomap-layer include/asm-generic/iomap.h
--- a/include/asm-generic/iomap.h~iomap-sort-out-the-broken-address-reporting-caused-by-the-iomap-layer
+++ a/include/asm-generic/iomap.h
@@ -65,4 +65,9 @@ struct pci_dev;
extern void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long max);
extern void pci_iounmap(struct pci_dev *dev, void __iomem *);
+/* Convert an iomap to text for this platform */
+extern char *iomap_name(void __iomem *addr, char *buf, size_t len);
+#define IOMAP_NAMELEN 12
+
+
#endif
diff -puN lib/iomap.c~iomap-sort-out-the-broken-address-reporting-caused-by-the-iomap-layer lib/iomap.c
--- a/lib/iomap.c~iomap-sort-out-the-broken-address-reporting-caused-by-the-iomap-layer
+++ a/lib/iomap.c
@@ -268,3 +268,15 @@ void pci_iounmap(struct pci_dev *dev, vo
}
EXPORT_SYMBOL(pci_iomap);
EXPORT_SYMBOL(pci_iounmap);
+
+char *iomap_name(void __iomem *port, char *buf, size_t len)
+{
+ if (port == NULL) {
+ snprintf(buf, len, "None");
+ return buf;
+ }
+ IO_COND(port, snprintf(buf, len, "0x%04lx", port),
+ snprintf(buf, len, "%08lx", port));
+ return buf;
+}
+EXPORT_SYMBOL(iomap_name);
_
-
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