arch/kmap: clean-up after b365c5d17d7e

arch/csky/include/asm/highmem.h

-/* SPDX-License-Identifier: GPL-2.0 */
-// Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd.
-
-#ifndef __ASM_CSKY_HIGHMEM_H
-#define __ASM_CSKY_HIGHMEM_H
-
-#ifdef __KERNEL__
-
-#include <linux/init.h>
-#include <linux/interrupt.h>
-#include <linux/uaccess.h>
-#include <asm/kmap_types.h>
-#include <asm/cache.h>
-
-/* undef for production */
-#define HIGHMEM_DEBUG 1
-
-/* declarations for highmem.c */
-extern unsigned long highstart_pfn, highend_pfn;
-
-extern pte_t *pkmap_page_table;
-
-/*
- * Right now we initialize only a single pte table. It can be extended
- * easily, subsequent pte tables have to be allocated in one physical
- * chunk of RAM.
- */
-#define LAST_PKMAP 1024
-#define LAST_PKMAP_MASK (LAST_PKMAP-1)
-#define PKMAP_NR(virt)  ((virt-PKMAP_BASE) >> PAGE_SHIFT)
-#define PKMAP_ADDR(nr)  (PKMAP_BASE + ((nr) << PAGE_SHIFT))
-
-extern void kunmap_high(struct page *page);
-
-#define ARCH_HAS_KMAP_FLUSH_TLB
-extern void kmap_flush_tlb(unsigned long addr);
-extern void kunmap(struct page *page);
-extern void *kmap_atomic(struct page *page);
-extern void __kunmap_atomic(void *kvaddr);
-extern void *kmap_atomic_pfn(unsigned long pfn);
-extern struct page *kmap_atomic_to_page(void *ptr);
-
-#define flush_cache_kmaps() do {} while (0)
-
-extern void kmap_init(void);
-
-#define kmap_prot PAGE_KERNEL
-
-#endif /* __KERNEL__ */
-
-#endif /* __ASM_CSKY_HIGHMEM_H */

arch/nds32/include/asm/highmem.h

-/* SPDX-License-Identifier: GPL-2.0 */
-// Copyright (C) 2005-2017 Andes Technology Corporation
-
-#ifndef _ASM_HIGHMEM_H
-#define _ASM_HIGHMEM_H
-
-#include <asm/proc-fns.h>
-#include <asm/kmap_types.h>
-#include <asm/fixmap.h>
-#include <asm/pgtable.h>
-
-/*
- * Right now we initialize only a single pte table. It can be extended
- * easily, subsequent pte tables have to be allocated in one physical
- * chunk of RAM.
- */
-/*
- * Ordering is (from lower to higher memory addresses):
- *
- * high_memory
- *			Persistent kmap area
- * PKMAP_BASE
- *			fixed_addresses
- * FIXADDR_START
- * FIXADDR_TOP
- *			Vmalloc area
- * VMALLOC_START
- * VMALLOC_END
- */
-#define PKMAP_BASE		((FIXADDR_START - PGDIR_SIZE) & (PGDIR_MASK))
-#define LAST_PKMAP		PTRS_PER_PTE
-#define LAST_PKMAP_MASK		(LAST_PKMAP - 1)
-#define PKMAP_NR(virt)		(((virt) - (PKMAP_BASE)) >> PAGE_SHIFT)
-#define PKMAP_ADDR(nr)		(PKMAP_BASE + ((nr) << PAGE_SHIFT))
-#define kmap_prot		PAGE_KERNEL
-
-static inline void flush_cache_kmaps(void)
-{
-	cpu_dcache_wbinval_all();
-}
-
-/* declarations for highmem.c */
-extern unsigned long highstart_pfn, highend_pfn;
-
-extern pte_t *pkmap_page_table;
-
-extern void kunmap_high(struct page *page);
-
-extern void kmap_init(void);
-
-/*
- * The following functions are already defined by <linux/highmem.h>
- * when CONFIG_HIGHMEM is not set.
- */
-#ifdef CONFIG_HIGHMEM
-extern void kunmap(struct page *page);
-extern void *kmap_atomic(struct page *page);
-extern void __kunmap_atomic(void *kvaddr);
-extern void *kmap_atomic_pfn(unsigned long pfn);
-extern struct page *kmap_atomic_to_page(void *ptr);
-#endif
-
-#endif