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) // Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4) #ifndef __ASM_CSKY_HIGHMEM_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5) #define __ASM_CSKY_HIGHMEM_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7) #ifdef __KERNEL__
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/interrupt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/uaccess.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <asm/kmap_types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <asm/cache.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) /* undef for production */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #define HIGHMEM_DEBUG 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) /* declarations for highmem.c */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) extern unsigned long highstart_pfn, highend_pfn;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) extern pte_t *pkmap_page_table;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24)  * Right now we initialize only a single pte table. It can be extended
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25)  * easily, subsequent pte tables have to be allocated in one physical
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26)  * chunk of RAM.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #define LAST_PKMAP 1024
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #define LAST_PKMAP_MASK (LAST_PKMAP-1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) #define PKMAP_NR(virt)  ((virt-PKMAP_BASE) >> PAGE_SHIFT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #define PKMAP_ADDR(nr)  (PKMAP_BASE + ((nr) << PAGE_SHIFT))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #define ARCH_HAS_KMAP_FLUSH_TLB
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) extern void kmap_flush_tlb(unsigned long addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) extern void *kmap_atomic_pfn(unsigned long pfn);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) #define flush_cache_kmaps() do {} while (0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) extern void kmap_init(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) #endif /* __KERNEL__ */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) #endif /* __ASM_CSKY_HIGHMEM_H */