1// SPDX-License-Identifier: GPL-2.0
 2// Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd.
 3
 4#include <linux/module.h>
 5#include <linux/highmem.h>
 6#include <linux/smp.h>
 7#include <linux/memblock.h>
 8#include <asm/fixmap.h>
 9#include <asm/tlbflush.h>
10#include <asm/cacheflush.h>
11
12unsigned long highstart_pfn, highend_pfn;
13
14void kmap_flush_tlb(unsigned long addr)
15{
16	flush_tlb_one(addr);
17}
18EXPORT_SYMBOL(kmap_flush_tlb);
19
20void __init kmap_init(void)
21{
22	unsigned long vaddr;
23	pgd_t *pgd;
24	pmd_t *pmd;
25	pud_t *pud;
26	pte_t *pte;
27
28	vaddr = PKMAP_BASE;
29	fixrange_init(vaddr, vaddr + PAGE_SIZE*LAST_PKMAP, swapper_pg_dir);
30
31	pgd = swapper_pg_dir + pgd_index(vaddr);
32	pud = (pud_t *)pgd;
33	pmd = pmd_offset(pud, vaddr);
34	pte = pte_offset_kernel(pmd, vaddr);
35	pkmap_page_table = pte;
36}

 1// SPDX-License-Identifier: GPL-2.0
 2// Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd.
 3
 4#include <linux/module.h>
 5#include <linux/highmem.h>
 6#include <linux/smp.h>
 7#include <linux/memblock.h>
 8#include <asm/fixmap.h>
 9#include <asm/tlbflush.h>
10#include <asm/cacheflush.h>
11
12unsigned long highstart_pfn, highend_pfn;
13
14void kmap_flush_tlb(unsigned long addr)
15{
16	flush_tlb_one(addr);
17}
18EXPORT_SYMBOL(kmap_flush_tlb);
19
20void __init kmap_init(void)
21{
22	unsigned long vaddr;
23	pgd_t *pgd;
24	pmd_t *pmd;
25	pud_t *pud;
26	pte_t *pte;
27
28	vaddr = PKMAP_BASE;
29	fixrange_init(vaddr, vaddr + PAGE_SIZE*LAST_PKMAP, swapper_pg_dir);
30
31	pgd = swapper_pg_dir + pgd_index(vaddr);
32	pud = (pud_t *)pgd;
33	pmd = pmd_offset(pud, vaddr);
34	pte = pte_offset_kernel(pmd, vaddr);
35	pkmap_page_table = pte;
36}