From 04dd17822334871b23ea2862f7798fb0e0007777 Mon Sep 17 00:00:00 2001 From: hc <hc@nodka.com> Date: Sat, 11 May 2024 08:53:19 +0000 Subject: [PATCH] change otg to host mode --- kernel/arch/microblaze/include/asm/pgalloc.h | 164 ++---------------------------------------------------- 1 files changed, 8 insertions(+), 156 deletions(-) diff --git a/kernel/arch/microblaze/include/asm/pgalloc.h b/kernel/arch/microblaze/include/asm/pgalloc.h index 7c89390..8839ce0 100644 --- a/kernel/arch/microblaze/include/asm/pgalloc.h +++ b/kernel/arch/microblaze/include/asm/pgalloc.h @@ -1,11 +1,8 @@ +/* SPDX-License-Identifier: GPL-2.0 */ /* * Copyright (C) 2008-2009 Michal Simek <monstr@monstr.eu> * Copyright (C) 2008-2009 PetaLogix * Copyright (C) 2006 Atmark Techno, Inc. - * - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file "COPYING" in the main directory of this archive - * for more details. */ #ifndef _ASM_MICROBLAZE_PGALLOC_H @@ -15,159 +12,27 @@ #include <linux/kernel.h> /* For min/max macros */ #include <linux/highmem.h> +#include <linux/pgtable.h> #include <asm/setup.h> #include <asm/io.h> #include <asm/page.h> #include <asm/cache.h> -#include <asm/pgtable.h> -#define PGDIR_ORDER 0 - -/* - * This is handled very differently on MicroBlaze since out page tables - * are all 0's and I want to be able to use these zero'd pages elsewhere - * as well - it gives us quite a speedup. - * -- Cort - */ -extern struct pgtable_cache_struct { - unsigned long *pgd_cache; - unsigned long *pte_cache; - unsigned long pgtable_cache_sz; -} quicklists; - -#define pgd_quicklist (quicklists.pgd_cache) -#define pmd_quicklist ((unsigned long *)0) -#define pte_quicklist (quicklists.pte_cache) -#define pgtable_cache_size (quicklists.pgtable_cache_sz) - -extern unsigned long *zero_cache; /* head linked list of pre-zero'd pages */ -extern atomic_t zero_sz; /* # currently pre-zero'd pages */ -extern atomic_t zeropage_hits; /* # zero'd pages request that we've done */ -extern atomic_t zeropage_calls; /* # zero'd pages request that've been made */ -extern atomic_t zerototal; /* # pages zero'd over time */ - -#define zero_quicklist (zero_cache) -#define zero_cache_sz (zero_sz) -#define zero_cache_calls (zeropage_calls) -#define zero_cache_hits (zeropage_hits) -#define zero_cache_total (zerototal) - -/* - * return a pre-zero'd page from the list, - * return NULL if none available -- Cort - */ -extern unsigned long get_zero_page_fast(void); +#define __HAVE_ARCH_PTE_ALLOC_ONE_KERNEL +#include <asm-generic/pgalloc.h> extern void __bad_pte(pmd_t *pmd); -static inline pgd_t *get_pgd_slow(void) +static inline pgd_t *get_pgd(void) { - pgd_t *ret; - - ret = (pgd_t *)__get_free_pages(GFP_KERNEL, PGDIR_ORDER); - if (ret != NULL) - clear_page(ret); - return ret; + return (pgd_t *)__get_free_pages(GFP_KERNEL|__GFP_ZERO, 0); } -static inline pgd_t *get_pgd_fast(void) -{ - unsigned long *ret; - - ret = pgd_quicklist; - if (ret != NULL) { - pgd_quicklist = (unsigned long *)(*ret); - ret[0] = 0; - pgtable_cache_size--; - } else - ret = (unsigned long *)get_pgd_slow(); - return (pgd_t *)ret; -} - -static inline void free_pgd_fast(pgd_t *pgd) -{ - *(unsigned long **)pgd = pgd_quicklist; - pgd_quicklist = (unsigned long *) pgd; - pgtable_cache_size++; -} - -static inline void free_pgd_slow(pgd_t *pgd) -{ - free_page((unsigned long)pgd); -} - -#define pgd_free(mm, pgd) free_pgd_fast(pgd) -#define pgd_alloc(mm) get_pgd_fast() +#define pgd_alloc(mm) get_pgd() #define pmd_pgtable(pmd) pmd_page(pmd) -/* - * We don't have any real pmd's, and this code never triggers because - * the pgd will always be present.. - */ -#define pmd_alloc_one_fast(mm, address) ({ BUG(); ((pmd_t *)1); }) -#define pmd_alloc_one(mm, address) ({ BUG(); ((pmd_t *)2); }) - -extern pte_t *pte_alloc_one_kernel(struct mm_struct *mm, unsigned long addr); - -static inline struct page *pte_alloc_one(struct mm_struct *mm, - unsigned long address) -{ - struct page *ptepage; - -#ifdef CONFIG_HIGHPTE - int flags = GFP_KERNEL | __GFP_HIGHMEM; -#else - int flags = GFP_KERNEL; -#endif - - ptepage = alloc_pages(flags, 0); - if (!ptepage) - return NULL; - clear_highpage(ptepage); - if (!pgtable_page_ctor(ptepage)) { - __free_page(ptepage); - return NULL; - } - return ptepage; -} - -static inline pte_t *pte_alloc_one_fast(struct mm_struct *mm, - unsigned long address) -{ - unsigned long *ret; - - ret = pte_quicklist; - if (ret != NULL) { - pte_quicklist = (unsigned long *)(*ret); - ret[0] = 0; - pgtable_cache_size--; - } - return (pte_t *)ret; -} - -static inline void pte_free_fast(pte_t *pte) -{ - *(unsigned long **)pte = pte_quicklist; - pte_quicklist = (unsigned long *) pte; - pgtable_cache_size++; -} - -static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte) -{ - free_page((unsigned long)pte); -} - -static inline void pte_free_slow(struct page *ptepage) -{ - __free_page(ptepage); -} - -static inline void pte_free(struct mm_struct *mm, struct page *ptepage) -{ - pgtable_page_dtor(ptepage); - __free_page(ptepage); -} +extern pte_t *pte_alloc_one_kernel(struct mm_struct *mm); #define __pte_free_tlb(tlb, pte, addr) pte_free((tlb)->mm, (pte)) @@ -177,19 +42,6 @@ #define pmd_populate_kernel(mm, pmd, pte) \ (pmd_val(*(pmd)) = (unsigned long) (pte)) -/* - * We don't have any real pmd's, and this code never triggers because - * the pgd will always be present.. - */ -#define pmd_alloc_one(mm, address) ({ BUG(); ((pmd_t *)2); }) -#define pmd_free(mm, x) do { } while (0) -#define __pmd_free_tlb(tlb, x, addr) pmd_free((tlb)->mm, x) -#define pgd_populate(mm, pmd, pte) BUG() - -extern int do_check_pgt_cache(int, int); - #endif /* CONFIG_MMU */ - -#define check_pgt_cache() do { } while (0) #endif /* _ASM_MICROBLAZE_PGALLOC_H */ -- Gitblit v1.6.2