mirror of
https://github.com/torvalds/linux.git
synced 2024-12-18 17:12:55 +00:00
sh: Kill off arch/sh64/mm.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Paul Mundt
parent
df0fb25628
commit
e150e7f25f
@ -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
|
||||
@ -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 <linux/types.h>
|
||||
#include <linux/mm.h>
|
||||
#include <linux/string.h>
|
||||
#include <linux/pci.h>
|
||||
#include <linux/dma-mapping.h>
|
||||
#include <linux/module.h>
|
||||
#include <asm/io.h>
|
||||
|
||||
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);
|
||||
@ -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 <linux/init.h>
|
||||
#include <linux/fs.h>
|
||||
#include <linux/mm.h>
|
||||
#include <linux/hugetlb.h>
|
||||
#include <linux/pagemap.h>
|
||||
#include <linux/slab.h>
|
||||
#include <linux/sysctl.h>
|
||||
|
||||
#include <asm/mman.h>
|
||||
#include <asm/pgalloc.h>
|
||||
#include <asm/tlb.h>
|
||||
#include <asm/tlbflush.h>
|
||||
#include <asm/cacheflush.h>
|
||||
|
||||
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;
|
||||
}
|
||||
@ -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 <linux/init.h>
|
||||
#include <linux/rwsem.h>
|
||||
#include <linux/mm.h>
|
||||
#include <linux/swap.h>
|
||||
#include <linux/bootmem.h>
|
||||
|
||||
#include <asm/mmu_context.h>
|
||||
#include <asm/page.h>
|
||||
#include <asm/pgalloc.h>
|
||||
#include <asm/pgtable.h>
|
||||
#include <asm/tlb.h>
|
||||
|
||||
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
|
||||
|
||||
Loading…
Reference in New Issue
Block a user