arm64: Extend the PCI I/O space to 16MB

The patch moves the PCI I/O space (currently at 64K) before the
earlyprintk mapping and extends it to 16MB.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>

diff --git a/Documentation/arm64/memory.txt b/Documentation/arm64/memory.txt
index 5e054bfe4dde8e30e178c073d19c8c2b520a7e0f..85e24c4f215c45136eb3393763dc802b007ac408 100644 (file)
--- a/Documentation/arm64/memory.txt
+++ b/Documentation/arm64/memory.txt
@@ -35,11 +35,13 @@ ffffffbc00000000    ffffffbdffffffff           8GB          vmemmap
 
 ffffffbe00000000       ffffffbffbbfffff          ~8GB          [guard, future vmmemap]
 
-ffffffbffbc00000       ffffffbffbdfffff           2MB          earlyprintk device
+ffffffbffa000000       ffffffbffaffffff          16MB          PCI I/O space
+
+ffffffbffb000000       ffffffbffbbfffff          12MB          [guard]
 
-ffffffbffbe00000       ffffffbffbe0ffff          64KB          PCI I/O space
+ffffffbffbc00000       ffffffbffbdfffff           2MB          earlyprintk device
 
-ffffffbffbe10000       ffffffbcffffffff          ~2MB          [guard]
+ffffffbffbe00000       ffffffbffbffffff           2MB          [guard]
 
 ffffffbffc000000       ffffffbfffffffff          64MB          modules
 
@@ -60,11 +62,13 @@ fffffdfc00000000    fffffdfdffffffff           8GB          vmemmap
 
 fffffdfe00000000       fffffdfffbbfffff          ~8GB          [guard, future vmmemap]
 
-fffffdfffbc00000       fffffdfffbdfffff           2MB          earlyprintk device
+fffffdfffa000000       fffffdfffaffffff          16MB          PCI I/O space
+
+fffffdfffb000000       fffffdfffbbfffff          12MB          [guard]
 
-fffffdfffbe00000       fffffdfffbe0ffff          64KB          PCI I/O space
+fffffdfffbc00000       fffffdfffbdfffff           2MB          earlyprintk device
 
-fffffdfffbe10000       fffffdfffbffffff          ~2MB          [guard]
+fffffdfffbe00000       fffffdfffbffffff           2MB          [guard]
 
 fffffdfffc000000       fffffdffffffffff          64MB          modules
 

diff --git a/arch/arm64/include/asm/io.h b/arch/arm64/include/asm/io.h
index 4cc813eddacbebee4c84f864f103bb6492d7c193..7846a6bb08334dec2833ef8c09d60373a55fe3fa 100644 (file)
--- a/arch/arm64/include/asm/io.h
+++ b/arch/arm64/include/asm/io.h
@@ -121,7 +121,7 @@ static inline u64 __raw_readq(const volatile void __iomem *addr)
  *  I/O port access primitives.
  */
 #define IO_SPACE_LIMIT         0xffff
-#define PCI_IOBASE             ((void __iomem *)(MODULES_VADDR - SZ_2M))
+#define PCI_IOBASE             ((void __iomem *)(MODULES_VADDR - SZ_32M))
 
 static inline u8 inb(unsigned long addr)
 {