add ax88772_rst

hc

2024-05-10 9999e48639b3cecb08ffb37358bcba3b48161b29

 kernel/arch/riscv/include/asm/pgtable-64.h
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@@ -1,14 +1,6 @@
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+/* SPDX-License-Identifier: GPL-2.0-only */
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 /*
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  * Copyright (C) 2012 Regents of the University of California
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- *
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- *   This program is free software; you can redistribute it and/or
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- *   modify it under the terms of the GNU General Public License
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- *   as published by the Free Software Foundation, version 2.
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- *
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- *   This program is distributed in the hope that it will be useful,
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- *   but WITHOUT ANY WARRANTY; without even the implied warranty of
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- *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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- *   GNU General Public License for more details.
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  */
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 #ifndef _ASM_RISCV_PGTABLE_64_H
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@@ -51,6 +43,13 @@
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 	return !pud_present(pud);
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 }
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+#define pud_leaf	pud_leaf
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+static inline int pud_leaf(pud_t pud)
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+{
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+	return pud_present(pud) &&
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+	       (pud_val(pud) & (_PAGE_READ | _PAGE_WRITE | _PAGE_EXEC));
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+}
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+
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 static inline void set_pud(pud_t *pudp, pud_t pud)
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 {
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 	*pudp = pud;
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@@ -61,16 +60,14 @@
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 	set_pud(pudp, __pud(0));
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 }
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-static inline unsigned long pud_page_vaddr(pud_t pud)
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+static inline pmd_t *pud_pgtable(pud_t pud)
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 {
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-	return (unsigned long)pfn_to_virt(pud_val(pud) >> _PAGE_PFN_SHIFT);
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+	return (pmd_t *)pfn_to_virt(pud_val(pud) >> _PAGE_PFN_SHIFT);
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 }
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-#define pmd_index(addr) (((addr) >> PMD_SHIFT) & (PTRS_PER_PMD - 1))
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-
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-static inline pmd_t *pmd_offset(pud_t *pud, unsigned long addr)
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+static inline struct page *pud_page(pud_t pud)
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 {
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-	return (pmd_t *)pud_page_vaddr(*pud) + pmd_index(addr);
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+	return pfn_to_page(pud_val(pud) >> _PAGE_PFN_SHIFT);
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 }
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 static inline pmd_t pfn_pmd(unsigned long pfn, pgprot_t prot)
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@@ -78,6 +75,11 @@
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 	return __pmd((pfn << _PAGE_PFN_SHIFT) | pgprot_val(prot));
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 }
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+static inline unsigned long _pmd_pfn(pmd_t pmd)
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+{
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+	return pmd_val(pmd) >> _PAGE_PFN_SHIFT;
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+}
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+
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 #define pmd_ERROR(e) \
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 	pr_err("%s:%d: bad pmd %016lx.\n", __FILE__, __LINE__, pmd_val(e))
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