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authorPaul Mundt <lethal@linux-sh.org>2007-11-21 03:09:14 -0500
committerPaul Mundt <lethal@linux-sh.org>2008-01-27 23:18:53 -0500
commite150e7f25f7e3878cf2230193a5c708d99b9971e (patch)
tree82633d9109ae98d3985e26f766ac5e65c744932a /arch
parentdf0fb2562806e853e53de43af04f013c3e45427b (diff)
sh: Kill off arch/sh64/mm.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch')
-rw-r--r--arch/sh64/mm/Makefile44
-rw-r--r--arch/sh64/mm/consistent.c53
-rw-r--r--arch/sh64/mm/hugetlbpage.c105
-rw-r--r--arch/sh64/mm/init.c189
4 files changed, 0 insertions, 391 deletions
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 @@
1#
2# This file is subject to the terms and conditions of the GNU General Public
3# License. See the file "COPYING" in the main directory of this archive
4# for more details.
5#
6# Copyright (C) 2000, 2001 Paolo Alberelli
7# Copyright (C) 2003, 2004 Paul Mundt
8#
9# Makefile for the sh64-specific parts of the Linux memory manager.
10#
11# Note! Dependencies are done automagically by 'make dep', which also
12# removes any old dependencies. DON'T put your own dependencies here
13# unless it's something special (ie not a .c file).
14#
15
16obj-y := cache.o consistent.o extable.o fault.o init.o ioremap.o \
17 tlbmiss.o tlb.o
18
19obj-$(CONFIG_HUGETLB_PAGE) += hugetlbpage.o
20
21# Special flags for tlbmiss.o. This puts restrictions on the number of
22# caller-save registers that the compiler can target when building this file.
23# This is required because the code is called from a context in entry.S where
24# very few registers have been saved in the exception handler (for speed
25# reasons).
26# The caller save registers that have been saved and which can be used are
27# r2,r3,r4,r5 : argument passing
28# r15, r18 : SP and LINK
29# tr0-4 : allow all caller-save TR's. The compiler seems to be able to make
30# use of them, so it's probably beneficial to performance to save them
31# and have them available for it.
32#
33# The resources not listed below are callee save, i.e. the compiler is free to
34# use any of them and will spill them to the stack itself.
35
36CFLAGS_tlbmiss.o += -ffixed-r7 \
37 -ffixed-r8 -ffixed-r9 -ffixed-r10 -ffixed-r11 -ffixed-r12 \
38 -ffixed-r13 -ffixed-r14 -ffixed-r16 -ffixed-r17 -ffixed-r19 \
39 -ffixed-r20 -ffixed-r21 -ffixed-r22 -ffixed-r23 \
40 -ffixed-r24 -ffixed-r25 -ffixed-r26 -ffixed-r27 \
41 -ffixed-r36 -ffixed-r37 -ffixed-r38 -ffixed-r39 -ffixed-r40 \
42 -ffixed-r41 -ffixed-r42 -ffixed-r43 \
43 -ffixed-r60 -ffixed-r61 -ffixed-r62 \
44 -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 @@
1/*
2 * Copyright (C) 2001 David J. Mckay (david.mckay@st.com)
3 * Copyright (C) 2003 Paul Mundt (lethal@linux-sh.org)
4 *
5 * May be copied or modified under the terms of the GNU General Public
6 * License. See linux/COPYING for more information.
7 *
8 * Dynamic DMA mapping support.
9 */
10#include <linux/types.h>
11#include <linux/mm.h>
12#include <linux/string.h>
13#include <linux/pci.h>
14#include <linux/dma-mapping.h>
15#include <linux/module.h>
16#include <asm/io.h>
17
18void *consistent_alloc(struct pci_dev *hwdev, size_t size,
19 dma_addr_t *dma_handle)
20{
21 void *ret;
22 int gfp = GFP_ATOMIC;
23 void *vp;
24
25 if (hwdev == NULL || hwdev->dma_mask != 0xffffffff)
26 gfp |= GFP_DMA;
27
28 ret = (void *)__get_free_pages(gfp, get_order(size));
29
30 /* now call our friend ioremap_nocache to give us an uncached area */
31 vp = ioremap_nocache(virt_to_phys(ret), size);
32
33 if (vp != NULL) {
34 memset(vp, 0, size);
35 *dma_handle = virt_to_phys(ret);
36 dma_cache_sync(NULL, ret, size, DMA_BIDIRECTIONAL);
37 }
38
39 return vp;
40}
41EXPORT_SYMBOL(consistent_alloc);
42
43void consistent_free(struct pci_dev *hwdev, size_t size,
44 void *vaddr, dma_addr_t dma_handle)
45{
46 void *alloc;
47
48 alloc = phys_to_virt((unsigned long)dma_handle);
49 free_pages((unsigned long)alloc, get_order(size));
50
51 iounmap(vaddr);
52}
53EXPORT_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 @@
1/*
2 * arch/sh64/mm/hugetlbpage.c
3 *
4 * SuperH HugeTLB page support.
5 *
6 * Cloned from sparc64 by Paul Mundt.
7 *
8 * Copyright (C) 2002, 2003 David S. Miller (davem@redhat.com)
9 */
10
11#include <linux/init.h>
12#include <linux/fs.h>
13#include <linux/mm.h>
14#include <linux/hugetlb.h>
15#include <linux/pagemap.h>
16#include <linux/slab.h>
17#include <linux/sysctl.h>
18
19#include <asm/mman.h>
20#include <asm/pgalloc.h>
21#include <asm/tlb.h>
22#include <asm/tlbflush.h>
23#include <asm/cacheflush.h>
24
25pte_t *huge_pte_alloc(struct mm_struct *mm, unsigned long addr)
26{
27 pgd_t *pgd;
28 pmd_t *pmd;
29 pte_t *pte = NULL;
30
31 pgd = pgd_offset(mm, addr);
32 if (pgd) {
33 pmd = pmd_alloc(mm, pgd, addr);
34 if (pmd)
35 pte = pte_alloc_map(mm, pmd, addr);
36 }
37 return pte;
38}
39
40pte_t *huge_pte_offset(struct mm_struct *mm, unsigned long addr)
41{
42 pgd_t *pgd;
43 pmd_t *pmd;
44 pte_t *pte = NULL;
45
46 pgd = pgd_offset(mm, addr);
47 if (pgd) {
48 pmd = pmd_offset(pgd, addr);
49 if (pmd)
50 pte = pte_offset_map(pmd, addr);
51 }
52 return pte;
53}
54
55int huge_pmd_unshare(struct mm_struct *mm, unsigned long *addr, pte_t *ptep)
56{
57 return 0;
58}
59
60void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
61 pte_t *ptep, pte_t entry)
62{
63 int i;
64
65 for (i = 0; i < (1 << HUGETLB_PAGE_ORDER); i++) {
66 set_pte_at(mm, addr, ptep, entry);
67 ptep++;
68 addr += PAGE_SIZE;
69 pte_val(entry) += PAGE_SIZE;
70 }
71}
72
73pte_t huge_ptep_get_and_clear(struct mm_struct *mm, unsigned long addr,
74 pte_t *ptep)
75{
76 pte_t entry;
77 int i;
78
79 entry = *ptep;
80
81 for (i = 0; i < (1 << HUGETLB_PAGE_ORDER); i++) {
82 pte_clear(mm, addr, ptep);
83 addr += PAGE_SIZE;
84 ptep++;
85 }
86
87 return entry;
88}
89
90struct page *follow_huge_addr(struct mm_struct *mm,
91 unsigned long address, int write)
92{
93 return ERR_PTR(-EINVAL);
94}
95
96int pmd_huge(pmd_t pmd)
97{
98 return 0;
99}
100
101struct page *follow_huge_pmd(struct mm_struct *mm, unsigned long address,
102 pmd_t *pmd, int write)
103{
104 return NULL;
105}
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 @@
1/*
2 * This file is subject to the terms and conditions of the GNU General Public
3 * License. See the file "COPYING" in the main directory of this archive
4 * for more details.
5 *
6 * arch/sh64/mm/init.c
7 *
8 * Copyright (C) 2000, 2001 Paolo Alberelli
9 * Copyright (C) 2003, 2004 Paul Mundt
10 *
11 */
12
13#include <linux/init.h>
14#include <linux/rwsem.h>
15#include <linux/mm.h>
16#include <linux/swap.h>
17#include <linux/bootmem.h>
18
19#include <asm/mmu_context.h>
20#include <asm/page.h>
21#include <asm/pgalloc.h>
22#include <asm/pgtable.h>
23#include <asm/tlb.h>
24
25DEFINE_PER_CPU(struct mmu_gather, mmu_gathers);
26
27/*
28 * Cache of MMU context last used.
29 */
30unsigned long mmu_context_cache;
31pgd_t * mmu_pdtp_cache;
32int after_bootmem = 0;
33
34/*
35 * BAD_PAGE is the page that is used for page faults when linux
36 * is out-of-memory. Older versions of linux just did a
37 * do_exit(), but using this instead means there is less risk
38 * for a process dying in kernel mode, possibly leaving an inode
39 * unused etc..
40 *
41 * BAD_PAGETABLE is the accompanying page-table: it is initialized
42 * to point to BAD_PAGE entries.
43 *
44 * ZERO_PAGE is a special page that is used for zero-initialized
45 * data and COW.
46 */
47
48extern unsigned char empty_zero_page[PAGE_SIZE];
49extern unsigned char empty_bad_page[PAGE_SIZE];
50extern pte_t empty_bad_pte_table[PTRS_PER_PTE];
51extern pgd_t swapper_pg_dir[PTRS_PER_PGD];
52
53extern char _text, _etext, _edata, __bss_start, _end;
54extern char __init_begin, __init_end;
55
56/* It'd be good if these lines were in the standard header file. */
57#define START_PFN (NODE_DATA(0)->bdata->node_boot_start >> PAGE_SHIFT)
58#define MAX_LOW_PFN (NODE_DATA(0)->bdata->node_low_pfn)
59
60
61void show_mem(void)
62{
63 int i, total = 0, reserved = 0;
64 int shared = 0, cached = 0;
65
66 printk("Mem-info:\n");
67 show_free_areas();
68 printk("Free swap: %6ldkB\n",nr_swap_pages<<(PAGE_SHIFT-10));
69 i = max_mapnr;
70 while (i-- > 0) {
71 total++;
72 if (PageReserved(mem_map+i))
73 reserved++;
74 else if (PageSwapCache(mem_map+i))
75 cached++;
76 else if (page_count(mem_map+i))
77 shared += page_count(mem_map+i) - 1;
78 }
79 printk("%d pages of RAM\n",total);
80 printk("%d reserved pages\n",reserved);
81 printk("%d pages shared\n",shared);
82 printk("%d pages swap cached\n",cached);
83 printk("%ld pages in page table cache\n", quicklist_total_size());
84}
85
86/*
87 * paging_init() sets up the page tables.
88 *
89 * head.S already did a lot to set up address translation for the kernel.
90 * Here we comes with:
91 * . MMU enabled
92 * . ASID set (SR)
93 * . some 512MB regions being mapped of which the most relevant here is:
94 * . CACHED segment (ASID 0 [irrelevant], shared AND NOT user)
95 * . possible variable length regions being mapped as:
96 * . UNCACHED segment (ASID 0 [irrelevant], shared AND NOT user)
97 * . All of the memory regions are placed, independently from the platform
98 * on high addresses, above 0x80000000.
99 * . swapper_pg_dir is already cleared out by the .space directive
100 * in any case swapper does not require a real page directory since
101 * it's all kernel contained.
102 *
103 * Those pesky NULL-reference errors in the kernel are then
104 * dealt with by not mapping address 0x00000000 at all.
105 *
106 */
107void __init paging_init(void)
108{
109 unsigned long zones_size[MAX_NR_ZONES] = {0, };
110
111 pgd_init((unsigned long)swapper_pg_dir);
112 pgd_init((unsigned long)swapper_pg_dir +
113 sizeof(pgd_t) * USER_PTRS_PER_PGD);
114
115 mmu_context_cache = MMU_CONTEXT_FIRST_VERSION;
116
117 zones_size[ZONE_NORMAL] = MAX_LOW_PFN - START_PFN;
118 NODE_DATA(0)->node_mem_map = NULL;
119 free_area_init_node(0, NODE_DATA(0), zones_size, __MEMORY_START >> PAGE_SHIFT, 0);
120}
121
122void __init mem_init(void)
123{
124 int codesize, reservedpages, datasize, initsize;
125 int tmp;
126
127 max_mapnr = num_physpages = MAX_LOW_PFN - START_PFN;
128 high_memory = (void *)__va(MAX_LOW_PFN * PAGE_SIZE);
129
130 /*
131 * Clear the zero-page.
132 * This is not required but we might want to re-use
133 * this very page to pass boot parameters, one day.
134 */
135 memset(empty_zero_page, 0, PAGE_SIZE);
136
137 /* this will put all low memory onto the freelists */
138 totalram_pages += free_all_bootmem_node(NODE_DATA(0));
139 reservedpages = 0;
140 for (tmp = 0; tmp < num_physpages; tmp++)
141 /*
142 * Only count reserved RAM pages
143 */
144 if (PageReserved(mem_map+tmp))
145 reservedpages++;
146
147 after_bootmem = 1;
148
149 codesize = (unsigned long) &_etext - (unsigned long) &_text;
150 datasize = (unsigned long) &_edata - (unsigned long) &_etext;
151 initsize = (unsigned long) &__init_end - (unsigned long) &__init_begin;
152
153 printk("Memory: %luk/%luk available (%dk kernel code, %dk reserved, %dk data, %dk init)\n",
154 (unsigned long) nr_free_pages() << (PAGE_SHIFT-10),
155 max_mapnr << (PAGE_SHIFT-10),
156 codesize >> 10,
157 reservedpages << (PAGE_SHIFT-10),
158 datasize >> 10,
159 initsize >> 10);
160}
161
162void free_initmem(void)
163{
164 unsigned long addr;
165
166 addr = (unsigned long)(&__init_begin);
167 for (; addr < (unsigned long)(&__init_end); addr += PAGE_SIZE) {
168 ClearPageReserved(virt_to_page(addr));
169 init_page_count(virt_to_page(addr));
170 free_page(addr);
171 totalram_pages++;
172 }
173 printk ("Freeing unused kernel memory: %ldk freed\n", (&__init_end - &__init_begin) >> 10);
174}
175
176#ifdef CONFIG_BLK_DEV_INITRD
177void free_initrd_mem(unsigned long start, unsigned long end)
178{
179 unsigned long p;
180 for (p = start; p < end; p += PAGE_SIZE) {
181 ClearPageReserved(virt_to_page(p));
182 init_page_count(virt_to_page(p));
183 free_page(p);
184 totalram_pages++;
185 }
186 printk ("Freeing initrd memory: %ldk freed\n", (end - start) >> 10);
187}
188#endif
189
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