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36 lines
775 B
36 lines
775 B
// SPDX-License-Identifier: GPL-2.0 |
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// Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd. |
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#include <linux/module.h> |
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#include <linux/highmem.h> |
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#include <linux/smp.h> |
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#include <linux/memblock.h> |
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#include <asm/fixmap.h> |
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#include <asm/tlbflush.h> |
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#include <asm/cacheflush.h> |
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unsigned long highstart_pfn, highend_pfn; |
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void kmap_flush_tlb(unsigned long addr) |
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{ |
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flush_tlb_one(addr); |
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} |
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EXPORT_SYMBOL(kmap_flush_tlb); |
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void __init kmap_init(void) |
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{ |
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unsigned long vaddr; |
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pgd_t *pgd; |
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pmd_t *pmd; |
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pud_t *pud; |
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pte_t *pte; |
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vaddr = PKMAP_BASE; |
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fixrange_init(vaddr, vaddr + PAGE_SIZE*LAST_PKMAP, swapper_pg_dir); |
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pgd = swapper_pg_dir + pgd_index(vaddr); |
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pud = (pud_t *)pgd; |
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pmd = pmd_offset(pud, vaddr); |
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pte = pte_offset_kernel(pmd, vaddr); |
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pkmap_page_table = pte; |
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}
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