ARM: tegra: use section-sized static mappings for LPAE too

The static mappings for Tegra's PPSB and APB regions were sized at 1MB
in order to allow mapping via sections in order to avoid burning RAM for
PTEs. On LPAE, sections are 2MB, so the static mappings need to be
larger in order to gain the same benefit. Set IO_{PPSB,APB}_SIZE to
SECTION_SIZE so this adjusts automatically.

While we're fiddling with iomap.h, compress IO_{IRAM,CPU}_VIRT together
to save virtual address space in the vmalloc region; these two regions
are mapped using PTEs.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Reviewed-by: Thierry Reding <treding@nvidia.com>

diff --git a/arch/arm/mach-tegra/iomap.h b/arch/arm/mach-tegra/iomap.h
index 26b1c2ad0cebfd30a50573138808b7df17cd34cf..ee79808e93a3f2edf91e43f2f6c069917cf1f4dd 100644 (file)
--- a/arch/arm/mach-tegra/iomap.h
+++ b/arch/arm/mach-tegra/iomap.h
@@ -19,6 +19,7 @@
 #ifndef __MACH_TEGRA_IOMAP_H
 #define __MACH_TEGRA_IOMAP_H
 
+#include <asm/pgtable.h>
 #include <asm/sizes.h>
 
 #define TEGRA_IRAM_BASE                        0x40000000
@@ -115,27 +116,26 @@
  * two 256MB io windows (that actually only use about 64KB
  * at the start of each).
  *
- * We will just map the first 1MB of each window (to minimize
+ * We will just map the first MMU section of each window (to minimize
  * pt entries needed) and provide a macro to transform physical
  * io addresses to an appropriate void __iomem *.
- *
  */
 
 #define IO_IRAM_PHYS   0x40000000
 #define IO_IRAM_VIRT   IOMEM(0xFE400000)
 #define IO_IRAM_SIZE   SZ_256K
 
-#define IO_CPU_PHYS     0x50040000
-#define IO_CPU_VIRT     IOMEM(0xFE000000)
+#define IO_CPU_PHYS    0x50040000
+#define IO_CPU_VIRT    IOMEM(0xFE440000)
 #define IO_CPU_SIZE    SZ_16K
 
 #define IO_PPSB_PHYS   0x60000000
 #define IO_PPSB_VIRT   IOMEM(0xFE200000)
-#define IO_PPSB_SIZE   SZ_1M
+#define IO_PPSB_SIZE   SECTION_SIZE
 
 #define IO_APB_PHYS    0x70000000
-#define IO_APB_VIRT    IOMEM(0xFE300000)
-#define IO_APB_SIZE    SZ_1M
+#define IO_APB_VIRT    IOMEM(0xFE000000)
+#define IO_APB_SIZE    SECTION_SIZE
 
 #define IO_TO_VIRT_BETWEEN(p, st, sz)  ((p) >= (st) && (p) < ((st) + (sz)))
 #define IO_TO_VIRT_XLATE(p, pst, vst)  (((p) - (pst) + (vst)))