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authorStephen Warren <swarren@nvidia.com>2013-10-29 13:47:21 -0600
committerStephen Warren <swarren@nvidia.com>2013-12-04 12:25:25 -0700
commit6dee8200b794a83c0fb144878fdf0ac52af28835 (patch)
tree5f8c36c441ff5d2fd3a5fb2f6315b897e58e3552 /arch/arm/mach-tegra
parent2f1d70af28a94988c1e8fba2ae03d4c7e68e690b (diff)
downloadop-kernel-dev-6dee8200b794a83c0fb144878fdf0ac52af28835.zip
op-kernel-dev-6dee8200b794a83c0fb144878fdf0ac52af28835.tar.gz
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>
Diffstat (limited to 'arch/arm/mach-tegra')
-rw-r--r--arch/arm/mach-tegra/iomap.h14
1 files changed, 7 insertions, 7 deletions
diff --git a/arch/arm/mach-tegra/iomap.h b/arch/arm/mach-tegra/iomap.h
index 26b1c2a..ee79808 100644
--- 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)))
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