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Commit f167063a authored by Richard Kuo's avatar Richard Kuo
Browse files

Hexagon: switch to using the device type for IO mappings 



Uncached on our architecture can still have side effects
such as canceled/replayed transactions; device type prevents
this.

Signed-off-by: default avatarRichard Kuo <rkuo@codeaurora.org>
parent 2b3c744c

arch/hexagon/include/asm/vm_mmu.h

+4 −5
Original line number Diff line number Diff line
@@ -68,14 +68,13 @@ 


#define __HEXAGON_C_WB		0x0	/* Write-back, no L2 */

#define	__HEXAGON_C_WT		0x1	/* Write-through, no L2 */

#define	__HEXAGON_C_UNC		0x6	/* Uncached memory */

#if CONFIG_HEXAGON_ARCH_VERSION >= 2

#define	__HEXAGON_C_DEV		0x4	/* Device register space */

#define	__HEXAGON_C_WT_L2	0x5	/* Write-through, with L2 */

/* this really should be #if CONFIG_HEXAGON_ARCH = 2 but that's not defined */

#if defined(CONFIG_HEXAGON_COMET) || defined(CONFIG_QDSP6_ST1)

#define __HEXAGON_C_UNC		__HEXAGON_C_DEV

#else

#define	__HEXAGON_C_UNC		0x6	/* Uncached memory */

#define __HEXAGON_C_DEV		__HEXAGON_C_UNC

#endif

#define	__HEXAGON_C_WT_L2	0x5	/* Write-through, with L2 */

#define	__HEXAGON_C_WB_L2	0x7	/* Write-back, with L2 */



/*