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-rw-r--r--include/asm-powerpc/pci.h33
1 files changed, 22 insertions, 11 deletions
diff --git a/include/asm-powerpc/pci.h b/include/asm-powerpc/pci.h
index 16f13319c76..ac656ee6bb1 100644
--- a/include/asm-powerpc/pci.h
+++ b/include/asm-powerpc/pci.h
@@ -143,8 +143,13 @@ int pci_mmap_page_range(struct pci_dev *pdev, struct vm_area_struct *vma,
/* Tell drivers/pci/proc.c that we have pci_mmap_page_range() */
#define HAVE_PCI_MMAP 1
-#ifdef CONFIG_PPC64
-/* pci_unmap_{single,page} is not a nop, thus... */
+#if defined(CONFIG_PPC64) || defined(CONFIG_NOT_COHERENT_CACHE)
+/*
+ * For 64-bit kernels, pci_unmap_{single,page} is not a nop.
+ * For 32-bit non-coherent kernels, pci_dma_sync_single_for_cpu() and
+ * so on are not nops.
+ * and thus...
+ */
#define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME) \
dma_addr_t ADDR_NAME;
#define DECLARE_PCI_UNMAP_LEN(LEN_NAME) \
@@ -158,6 +163,20 @@ int pci_mmap_page_range(struct pci_dev *pdev, struct vm_area_struct *vma,
#define pci_unmap_len_set(PTR, LEN_NAME, VAL) \
(((PTR)->LEN_NAME) = (VAL))
+#else /* 32-bit && coherent */
+
+/* pci_unmap_{page,single} is a nop so... */
+#define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME)
+#define DECLARE_PCI_UNMAP_LEN(LEN_NAME)
+#define pci_unmap_addr(PTR, ADDR_NAME) (0)
+#define pci_unmap_addr_set(PTR, ADDR_NAME, VAL) do { } while (0)
+#define pci_unmap_len(PTR, LEN_NAME) (0)
+#define pci_unmap_len_set(PTR, LEN_NAME, VAL) do { } while (0)
+
+#endif /* CONFIG_PPC64 || CONFIG_NOT_COHERENT_CACHE */
+
+#ifdef CONFIG_PPC64
+
/* The PCI address space does not equal the physical memory address
* space (we have an IOMMU). The IDE and SCSI device layers use
* this boolean for bounce buffer decisions.
@@ -172,16 +191,8 @@ int pci_mmap_page_range(struct pci_dev *pdev, struct vm_area_struct *vma,
*/
#define PCI_DMA_BUS_IS_PHYS (1)
-/* pci_unmap_{page,single} is a nop so... */
-#define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME)
-#define DECLARE_PCI_UNMAP_LEN(LEN_NAME)
-#define pci_unmap_addr(PTR, ADDR_NAME) (0)
-#define pci_unmap_addr_set(PTR, ADDR_NAME, VAL) do { } while (0)
-#define pci_unmap_len(PTR, LEN_NAME) (0)
-#define pci_unmap_len_set(PTR, LEN_NAME, VAL) do { } while (0)
-
#endif /* CONFIG_PPC64 */
-
+
extern void pcibios_resource_to_bus(struct pci_dev *dev,
struct pci_bus_region *region,
struct resource *res);