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-rw-r--r--include/asm-parisc/pci.h8
1 files changed, 7 insertions, 1 deletions
diff --git a/include/asm-parisc/pci.h b/include/asm-parisc/pci.h
index fa39d07d49e9..f277254159b7 100644
--- a/include/asm-parisc/pci.h
+++ b/include/asm-parisc/pci.h
@@ -84,11 +84,17 @@ static __inline__ int pci_is_lmmio(struct pci_hba_data *hba, unsigned long a)
/*
** Convert between PCI (IO_VIEW) addresses and processor (PA_VIEW) addresses.
** See pcibios.c for more conversions used by Generic PCI code.
+**
+** Platform characteristics/firmware guarantee that
+** (1) PA_VIEW - IO_VIEW = lmmio_offset for both LMMIO and ELMMIO
+** (2) PA_VIEW == IO_VIEW for GMMIO
*/
#define PCI_BUS_ADDR(hba,a) (PCI_IS_LMMIO(hba,a) \
? ((a) - hba->lmmio_space_offset) /* mangle LMMIO */ \
: (a)) /* GMMIO */
-#define PCI_HOST_ADDR(hba,a) ((a) + hba->lmmio_space_offset)
+#define PCI_HOST_ADDR(hba,a) (((a) & PCI_F_EXTEND) == 0 \
+ ? (a) + hba->lmmio_space_offset \
+ : (a))
#else /* !CONFIG_64BIT */
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