[mirror_ubuntu-bionic-kernel.git] / arch / cris / include / arch-v10 / arch / page.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _CRIS_ARCH_PAGE_H
#define _CRIS_ARCH_PAGE_H


#ifdef __KERNEL__

/* This handles the memory map.. */
#ifdef CONFIG_CRIS_LOW_MAP
#define PAGE_OFFSET		KSEG_6   /* kseg_6 is mapped to physical ram */
#else
#define PAGE_OFFSET		KSEG_C   /* kseg_c is mapped to physical ram */
#endif

/* macros to convert between really physical and virtual addresses
 * by stripping a selected bit, we can convert between KSEG_x and
 * 0x40000000 where the DRAM really resides
 */

#ifdef CONFIG_CRIS_LOW_MAP
/* we have DRAM virtually at 0x6 */
#define __pa(x)                 ((unsigned long)(x) & 0xdfffffff)
#define __va(x)                 ((void *)((unsigned long)(x) | 0x20000000))
#else
/* we have DRAM virtually at 0xc */
#define __pa(x)                 ((unsigned long)(x) & 0x7fffffff)
#define __va(x)                 ((void *)((unsigned long)(x) | 0x80000000))
#endif

#endif
#endif
Commit	Line	Data
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
1da177e4 LT	2	#ifndef _CRIS_ARCH_PAGE_H
	3	#define _CRIS_ARCH_PAGE_H
	4
1da177e4 LT	5
	6	#ifdef __KERNEL__
	7
	8	/* This handles the memory map.. */
	9	#ifdef CONFIG_CRIS_LOW_MAP
	10	#define PAGE_OFFSET KSEG_6 /* kseg_6 is mapped to physical ram */
	11	#else
	12	#define PAGE_OFFSET KSEG_C /* kseg_c is mapped to physical ram */
	13	#endif
	14
	15	/* macros to convert between really physical and virtual addresses
581b4fdc JN	16	* by stripping a selected bit, we can convert between KSEG_x and
581b4fdc JN	17	* 0x40000000 where the DRAM really resides
1da177e4 LT	18	*/
	19
	20	#ifdef CONFIG_CRIS_LOW_MAP
	21	/* we have DRAM virtually at 0x6 */
	22	#define __pa(x) ((unsigned long)(x) & 0xdfffffff)
	23	#define __va(x) ((void *)((unsigned long)(x) \| 0x20000000))
	24	#else
	25	/* we have DRAM virtually at 0xc */
	26	#define __pa(x) ((unsigned long)(x) & 0x7fffffff)
	27	#define __va(x) ((void *)((unsigned long)(x) \| 0x80000000))
	28	#endif
	29
	30	#endif
	31	#endif