Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) /* SPDX-License-Identifier: GPL-2.0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) #ifndef _H8300_SEGMENT_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3) #define _H8300_SEGMENT_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5) /* define constants */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6) #define USER_DATA     (1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7) #ifndef __USER_DS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) #define __USER_DS     (USER_DATA)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #define USER_PROGRAM  (2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #define SUPER_DATA    (3)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #ifndef __KERNEL_DS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #define __KERNEL_DS   (SUPER_DATA)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #define SUPER_PROGRAM (4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #ifndef __ASSEMBLY__
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) typedef struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) 	unsigned long seg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) } mm_segment_t;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #define MAKE_MM_SEG(s)	((mm_segment_t) { (s) })
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #define USER_DS		MAKE_MM_SEG(__USER_DS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #define KERNEL_DS	MAKE_MM_SEG(__KERNEL_DS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28)  * Get/set the SFC/DFC registers for MOVES instructions
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) static inline mm_segment_t get_fs(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 	return USER_DS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) #define uaccess_kernel()	(get_fs().seg == KERNEL_DS.seg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) #endif /* __ASSEMBLY__ */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) #endif /* _H8300_SEGMENT_H */