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authorChris Metcalf <cmetcalf@tilera.com>2013-08-07 11:55:35 -0400
committerChris Metcalf <cmetcalf@tilera.com>2013-08-13 16:26:05 -0400
commitba02f0eb826da6dbdc5a2958ac52304ee441234f (patch)
tree8b50a046b6dd1a4cbc1379ae43c1c673c39e8d3d /arch/tile/include
parentbc1a298f4e04833db4c430df59b90039f0170515 (diff)
tile: improve big-endian support
First, fix a bug in asm/unaligned.h; we need to just use the asm-generic unaligned.h so we properly choose endian-correct flavors. Second, keep the hv/hypervisor.h ABI fully "native" in the sense that we don't have __BIG_ENDIAN__ ifdefs there. Instead, we use macros in the head_NN.S assembly code to properly extract two 32-bit structure members from a 64-bit register holding the structure. Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
Diffstat (limited to 'arch/tile/include')
-rw-r--r--arch/tile/include/asm/unaligned.h14
-rw-r--r--arch/tile/include/hv/hypervisor.h16
2 files changed, 9 insertions, 21 deletions
diff --git a/arch/tile/include/asm/unaligned.h b/arch/tile/include/asm/unaligned.h
index 37dfbe598872..5a58a0d11449 100644
--- a/arch/tile/include/asm/unaligned.h
+++ b/arch/tile/include/asm/unaligned.h
@@ -15,11 +15,15 @@
#ifndef _ASM_TILE_UNALIGNED_H
#define _ASM_TILE_UNALIGNED_H
-#include <linux/unaligned/le_struct.h>
-#include <linux/unaligned/be_byteshift.h>
-#include <linux/unaligned/generic.h>
-#define get_unaligned __get_unaligned_le
-#define put_unaligned __put_unaligned_le
+/*
+ * We could implement faster get_unaligned_[be/le]64 using the ldna
+ * instruction on tilegx; however, we need to either copy all of the
+ * other generic functions to here (which is pretty ugly) or else
+ * modify both the generic code and other arch code to allow arch
+ * specific unaligned data access functions. Given these functions
+ * are not often called, we'll stick with the generic version.
+ */
+#include <asm-generic/unaligned.h>
/*
* Is the kernel doing fixups of unaligned accesses? If <0, no kernel
diff --git a/arch/tile/include/hv/hypervisor.h b/arch/tile/include/hv/hypervisor.h
index f882ebcf43a9..0971ebbde1b7 100644
--- a/arch/tile/include/hv/hypervisor.h
+++ b/arch/tile/include/hv/hypervisor.h
@@ -564,16 +564,11 @@ int hv_confstr(HV_ConfstrQuery query, HV_VirtAddr buf, int len);
/** Tile coordinate */
typedef struct
{
-#ifndef __BIG_ENDIAN__
/** X coordinate, relative to supervisor's top-left coordinate */
int x;
/** Y coordinate, relative to supervisor's top-left coordinate */
int y;
-#else
- int y;
- int x;
-#endif
} HV_Coord;
@@ -1119,13 +1114,8 @@ HV_VirtAddrRange hv_inquire_virtual(int idx);
/** A range of ASID values. */
typedef struct
{
-#ifndef __BIG_ENDIAN__
HV_ASID start; /**< First ASID in the range. */
unsigned int size; /**< Number of ASIDs. Zero for an invalid range. */
-#else
- unsigned int size; /**< Number of ASIDs. Zero for an invalid range. */
- HV_ASID start; /**< First ASID in the range. */
-#endif
} HV_ASIDRange;
/** Returns information about a range of ASIDs.
@@ -1449,7 +1439,6 @@ typedef enum
/** Message recipient. */
typedef struct
{
-#ifndef __BIG_ENDIAN__
/** X coordinate, relative to supervisor's top-left coordinate */
unsigned int x:11;
@@ -1458,11 +1447,6 @@ typedef struct
/** Status of this recipient */
HV_Recip_State state:10;
-#else //__BIG_ENDIAN__
- HV_Recip_State state:10;
- unsigned int y:11;
- unsigned int x:11;
-#endif
} HV_Recipient;
/** Send a message to a set of recipients.