1 files changed, 7 insertions, 13 deletions

diff --git a/arch/powerpc/include/asm/io.h b/arch/powerpc/include/asm/io.h
index 3ef40b703c4a..e746becd9d6f 100644
--- a/arch/powerpc/include/asm/io.h
+++ b/arch/powerpc/include/asm/io.h
@@ -268,19 +268,13 @@ extern void _memcpy_toio(volatile void __iomem *dest, const void *src,
  * their hooks, a bitfield is reserved for use by the platform near the
  * top of MMIO addresses (not PIO, those have to cope the hard way).
  *
- * This bit field is 12 bits and is at the top of the IO virtual
- * addresses PCI_IO_INDIRECT_TOKEN_MASK.
+ * The highest address in the kernel virtual space are:
  *
- * The kernel virtual space is thus:
+ *  d0003fffffffffff    # with Hash MMU
+ *  c00fffffffffffff    # with Radix MMU
  *
- *  0xD000000000000000          : vmalloc
- *  0xD000080000000000          : PCI PHB IO space
- *  0xD000080080000000          : ioremap
- *  0xD0000fffffffffff          : end of ioremap region
- *
- * Since the top 4 bits are reserved as the region ID, we use thus
- * the next 12 bits and keep 4 bits available for the future if the
- * virtual address space is ever to be extended.
+ * The top 4 bits are reserved as the region ID on hash, leaving us 8 bits
+ * that can be used for the field.
  *
  * The direct IO mapping operations will then mask off those bits
  * before doing the actual access, though that only happen when
@@ -292,8 +286,8 @@ extern void _memcpy_toio(volatile void __iomem *dest, const void *src,
  */
 
 #ifdef CONFIG_PPC_INDIRECT_MMIO
-#define PCI_IO_IND_TOKEN_MASK   0x0fff000000000000ul
-#define PCI_IO_IND_TOKEN_SHIFT  48
+#define PCI_IO_IND_TOKEN_SHIFT  52
+#define PCI_IO_IND_TOKEN_MASK   (0xfful << PCI_IO_IND_TOKEN_SHIFT)
 #define PCI_FIX_ADDR(addr)                                              \
         ((PCI_IO_ADDR)(((unsigned long)(addr)) & ~PCI_IO_IND_TOKEN_MASK))
 #define PCI_GET_ADDR_TOKEN(addr)                                        \