From e150e7f25f7e3878cf2230193a5c708d99b9971e Mon Sep 17 00:00:00 2001 From: Paul Mundt Date: Wed, 21 Nov 2007 17:09:14 +0900 Subject: [PATCH] sh: Kill off arch/sh64/mm. Signed-off-by: Paul Mundt --- arch/sh64/mm/Makefile | 44 --------- arch/sh64/mm/consistent.c | 53 ----------- arch/sh64/mm/hugetlbpage.c | 105 --------------------- arch/sh64/mm/init.c | 189 ------------------------------------- 4 files changed, 391 deletions(-) delete mode 100644 arch/sh64/mm/Makefile delete mode 100644 arch/sh64/mm/consistent.c delete mode 100644 arch/sh64/mm/hugetlbpage.c delete mode 100644 arch/sh64/mm/init.c diff --git a/arch/sh64/mm/Makefile b/arch/sh64/mm/Makefile deleted file mode 100644 index d0e813632480..000000000000 --- a/arch/sh64/mm/Makefile +++ /dev/null @@ -1,44 +0,0 @@ -# -# 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. -# -# Copyright (C) 2000, 2001 Paolo Alberelli -# Copyright (C) 2003, 2004 Paul Mundt -# -# Makefile for the sh64-specific parts of the Linux memory manager. -# -# Note! Dependencies are done automagically by 'make dep', which also -# removes any old dependencies. DON'T put your own dependencies here -# unless it's something special (ie not a .c file). -# - -obj-y := cache.o consistent.o extable.o fault.o init.o ioremap.o \ - tlbmiss.o tlb.o - -obj-$(CONFIG_HUGETLB_PAGE) += hugetlbpage.o - -# Special flags for tlbmiss.o. This puts restrictions on the number of -# caller-save registers that the compiler can target when building this file. -# This is required because the code is called from a context in entry.S where -# very few registers have been saved in the exception handler (for speed -# reasons). -# The caller save registers that have been saved and which can be used are -# r2,r3,r4,r5 : argument passing -# r15, r18 : SP and LINK -# tr0-4 : allow all caller-save TR's. The compiler seems to be able to make -# use of them, so it's probably beneficial to performance to save them -# and have them available for it. -# -# The resources not listed below are callee save, i.e. the compiler is free to -# use any of them and will spill them to the stack itself. - -CFLAGS_tlbmiss.o += -ffixed-r7 \ - -ffixed-r8 -ffixed-r9 -ffixed-r10 -ffixed-r11 -ffixed-r12 \ - -ffixed-r13 -ffixed-r14 -ffixed-r16 -ffixed-r17 -ffixed-r19 \ - -ffixed-r20 -ffixed-r21 -ffixed-r22 -ffixed-r23 \ - -ffixed-r24 -ffixed-r25 -ffixed-r26 -ffixed-r27 \ - -ffixed-r36 -ffixed-r37 -ffixed-r38 -ffixed-r39 -ffixed-r40 \ - -ffixed-r41 -ffixed-r42 -ffixed-r43 \ - -ffixed-r60 -ffixed-r61 -ffixed-r62 \ - -fomit-frame-pointer diff --git a/arch/sh64/mm/consistent.c b/arch/sh64/mm/consistent.c deleted file mode 100644 index c439620402cb..000000000000 --- a/arch/sh64/mm/consistent.c +++ /dev/null @@ -1,53 +0,0 @@ -/* - * Copyright (C) 2001 David J. Mckay (david.mckay@st.com) - * Copyright (C) 2003 Paul Mundt (lethal@linux-sh.org) - * - * May be copied or modified under the terms of the GNU General Public - * License. See linux/COPYING for more information. - * - * Dynamic DMA mapping support. - */ -#include -#include -#include -#include -#include -#include -#include - -void *consistent_alloc(struct pci_dev *hwdev, size_t size, - dma_addr_t *dma_handle) -{ - void *ret; - int gfp = GFP_ATOMIC; - void *vp; - - if (hwdev == NULL || hwdev->dma_mask != 0xffffffff) - gfp |= GFP_DMA; - - ret = (void *)__get_free_pages(gfp, get_order(size)); - - /* now call our friend ioremap_nocache to give us an uncached area */ - vp = ioremap_nocache(virt_to_phys(ret), size); - - if (vp != NULL) { - memset(vp, 0, size); - *dma_handle = virt_to_phys(ret); - dma_cache_sync(NULL, ret, size, DMA_BIDIRECTIONAL); - } - - return vp; -} -EXPORT_SYMBOL(consistent_alloc); - -void consistent_free(struct pci_dev *hwdev, size_t size, - void *vaddr, dma_addr_t dma_handle) -{ - void *alloc; - - alloc = phys_to_virt((unsigned long)dma_handle); - free_pages((unsigned long)alloc, get_order(size)); - - iounmap(vaddr); -} -EXPORT_SYMBOL(consistent_free); diff --git a/arch/sh64/mm/hugetlbpage.c b/arch/sh64/mm/hugetlbpage.c deleted file mode 100644 index fa66daa2dfa9..000000000000 --- a/arch/sh64/mm/hugetlbpage.c +++ /dev/null @@ -1,105 +0,0 @@ -/* - * arch/sh64/mm/hugetlbpage.c - * - * SuperH HugeTLB page support. - * - * Cloned from sparc64 by Paul Mundt. - * - * Copyright (C) 2002, 2003 David S. Miller (davem@redhat.com) - */ - -#include -#include -#include -#include -#include -#include -#include - -#include -#include -#include -#include -#include - -pte_t *huge_pte_alloc(struct mm_struct *mm, unsigned long addr) -{ - pgd_t *pgd; - pmd_t *pmd; - pte_t *pte = NULL; - - pgd = pgd_offset(mm, addr); - if (pgd) { - pmd = pmd_alloc(mm, pgd, addr); - if (pmd) - pte = pte_alloc_map(mm, pmd, addr); - } - return pte; -} - -pte_t *huge_pte_offset(struct mm_struct *mm, unsigned long addr) -{ - pgd_t *pgd; - pmd_t *pmd; - pte_t *pte = NULL; - - pgd = pgd_offset(mm, addr); - if (pgd) { - pmd = pmd_offset(pgd, addr); - if (pmd) - pte = pte_offset_map(pmd, addr); - } - return pte; -} - -int huge_pmd_unshare(struct mm_struct *mm, unsigned long *addr, pte_t *ptep) -{ - return 0; -} - -void set_huge_pte_at(struct mm_struct *mm, unsigned long addr, - pte_t *ptep, pte_t entry) -{ - int i; - - for (i = 0; i < (1 << HUGETLB_PAGE_ORDER); i++) { - set_pte_at(mm, addr, ptep, entry); - ptep++; - addr += PAGE_SIZE; - pte_val(entry) += PAGE_SIZE; - } -} - -pte_t huge_ptep_get_and_clear(struct mm_struct *mm, unsigned long addr, - pte_t *ptep) -{ - pte_t entry; - int i; - - entry = *ptep; - - for (i = 0; i < (1 << HUGETLB_PAGE_ORDER); i++) { - pte_clear(mm, addr, ptep); - addr += PAGE_SIZE; - ptep++; - } - - return entry; -} - -struct page *follow_huge_addr(struct mm_struct *mm, - unsigned long address, int write) -{ - return ERR_PTR(-EINVAL); -} - -int pmd_huge(pmd_t pmd) -{ - return 0; -} - -struct page *follow_huge_pmd(struct mm_struct *mm, unsigned long address, - pmd_t *pmd, int write) -{ - return NULL; -} diff --git a/arch/sh64/mm/init.c b/arch/sh64/mm/init.c deleted file mode 100644 index 21cf42de23e2..000000000000 --- a/arch/sh64/mm/init.c +++ /dev/null @@ -1,189 +0,0 @@ -/* - * 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. - * - * arch/sh64/mm/init.c - * - * Copyright (C) 2000, 2001 Paolo Alberelli - * Copyright (C) 2003, 2004 Paul Mundt - * - */ - -#include -#include -#include -#include -#include - -#include -#include -#include -#include -#include - -DEFINE_PER_CPU(struct mmu_gather, mmu_gathers); - -/* - * Cache of MMU context last used. - */ -unsigned long mmu_context_cache; -pgd_t * mmu_pdtp_cache; -int after_bootmem = 0; - -/* - * BAD_PAGE is the page that is used for page faults when linux - * is out-of-memory. Older versions of linux just did a - * do_exit(), but using this instead means there is less risk - * for a process dying in kernel mode, possibly leaving an inode - * unused etc.. - * - * BAD_PAGETABLE is the accompanying page-table: it is initialized - * to point to BAD_PAGE entries. - * - * ZERO_PAGE is a special page that is used for zero-initialized - * data and COW. - */ - -extern unsigned char empty_zero_page[PAGE_SIZE]; -extern unsigned char empty_bad_page[PAGE_SIZE]; -extern pte_t empty_bad_pte_table[PTRS_PER_PTE]; -extern pgd_t swapper_pg_dir[PTRS_PER_PGD]; - -extern char _text, _etext, _edata, __bss_start, _end; -extern char __init_begin, __init_end; - -/* It'd be good if these lines were in the standard header file. */ -#define START_PFN (NODE_DATA(0)->bdata->node_boot_start >> PAGE_SHIFT) -#define MAX_LOW_PFN (NODE_DATA(0)->bdata->node_low_pfn) - - -void show_mem(void) -{ - int i, total = 0, reserved = 0; - int shared = 0, cached = 0; - - printk("Mem-info:\n"); - show_free_areas(); - printk("Free swap: %6ldkB\n",nr_swap_pages<<(PAGE_SHIFT-10)); - i = max_mapnr; - while (i-- > 0) { - total++; - if (PageReserved(mem_map+i)) - reserved++; - else if (PageSwapCache(mem_map+i)) - cached++; - else if (page_count(mem_map+i)) - shared += page_count(mem_map+i) - 1; - } - printk("%d pages of RAM\n",total); - printk("%d reserved pages\n",reserved); - printk("%d pages shared\n",shared); - printk("%d pages swap cached\n",cached); - printk("%ld pages in page table cache\n", quicklist_total_size()); -} - -/* - * paging_init() sets up the page tables. - * - * head.S already did a lot to set up address translation for the kernel. - * Here we comes with: - * . MMU enabled - * . ASID set (SR) - * . some 512MB regions being mapped of which the most relevant here is: - * . CACHED segment (ASID 0 [irrelevant], shared AND NOT user) - * . possible variable length regions being mapped as: - * . UNCACHED segment (ASID 0 [irrelevant], shared AND NOT user) - * . All of the memory regions are placed, independently from the platform - * on high addresses, above 0x80000000. - * . swapper_pg_dir is already cleared out by the .space directive - * in any case swapper does not require a real page directory since - * it's all kernel contained. - * - * Those pesky NULL-reference errors in the kernel are then - * dealt with by not mapping address 0x00000000 at all. - * - */ -void __init paging_init(void) -{ - unsigned long zones_size[MAX_NR_ZONES] = {0, }; - - pgd_init((unsigned long)swapper_pg_dir); - pgd_init((unsigned long)swapper_pg_dir + - sizeof(pgd_t) * USER_PTRS_PER_PGD); - - mmu_context_cache = MMU_CONTEXT_FIRST_VERSION; - - zones_size[ZONE_NORMAL] = MAX_LOW_PFN - START_PFN; - NODE_DATA(0)->node_mem_map = NULL; - free_area_init_node(0, NODE_DATA(0), zones_size, __MEMORY_START >> PAGE_SHIFT, 0); -} - -void __init mem_init(void) -{ - int codesize, reservedpages, datasize, initsize; - int tmp; - - max_mapnr = num_physpages = MAX_LOW_PFN - START_PFN; - high_memory = (void *)__va(MAX_LOW_PFN * PAGE_SIZE); - - /* - * Clear the zero-page. - * This is not required but we might want to re-use - * this very page to pass boot parameters, one day. - */ - memset(empty_zero_page, 0, PAGE_SIZE); - - /* this will put all low memory onto the freelists */ - totalram_pages += free_all_bootmem_node(NODE_DATA(0)); - reservedpages = 0; - for (tmp = 0; tmp < num_physpages; tmp++) - /* - * Only count reserved RAM pages - */ - if (PageReserved(mem_map+tmp)) - reservedpages++; - - after_bootmem = 1; - - codesize = (unsigned long) &_etext - (unsigned long) &_text; - datasize = (unsigned long) &_edata - (unsigned long) &_etext; - initsize = (unsigned long) &__init_end - (unsigned long) &__init_begin; - - printk("Memory: %luk/%luk available (%dk kernel code, %dk reserved, %dk data, %dk init)\n", - (unsigned long) nr_free_pages() << (PAGE_SHIFT-10), - max_mapnr << (PAGE_SHIFT-10), - codesize >> 10, - reservedpages << (PAGE_SHIFT-10), - datasize >> 10, - initsize >> 10); -} - -void free_initmem(void) -{ - unsigned long addr; - - addr = (unsigned long)(&__init_begin); - for (; addr < (unsigned long)(&__init_end); addr += PAGE_SIZE) { - ClearPageReserved(virt_to_page(addr)); - init_page_count(virt_to_page(addr)); - free_page(addr); - totalram_pages++; - } - printk ("Freeing unused kernel memory: %ldk freed\n", (&__init_end - &__init_begin) >> 10); -} - -#ifdef CONFIG_BLK_DEV_INITRD -void free_initrd_mem(unsigned long start, unsigned long end) -{ - unsigned long p; - for (p = start; p < end; p += PAGE_SIZE) { - ClearPageReserved(virt_to_page(p)); - init_page_count(virt_to_page(p)); - free_page(p); - totalram_pages++; - } - printk ("Freeing initrd memory: %ldk freed\n", (end - start) >> 10); -} -#endif -