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1// SPDX-License-Identifier: GPL-2.0
2/*
3 * linux/arch/m68k/mm/kmap.c
4 *
5 * Copyright (C) 1997 Roman Hodek
6 *
7 * 10/01/99 cleaned up the code and changing to the same interface
8 * used by other architectures /Roman Zippel
9 */
10
11#include <linux/module.h>
12#include <linux/mm.h>
13#include <linux/kernel.h>
14#include <linux/string.h>
15#include <linux/types.h>
16#include <linux/slab.h>
17#include <linux/vmalloc.h>
18
19#include <asm/setup.h>
20#include <asm/segment.h>
21#include <asm/page.h>
22#include <asm/io.h>
23#include <asm/tlbflush.h>
24
25#undef DEBUG
26
27/*
28 * For 040/060 we can use the virtual memory area like other architectures,
29 * but for 020/030 we want to use early termination page descriptors and we
30 * can't mix this with normal page descriptors, so we have to copy that code
31 * (mm/vmalloc.c) and return appropriately aligned addresses.
32 */
33
34#ifdef CPU_M68040_OR_M68060_ONLY
35
36#define IO_SIZE PAGE_SIZE
37
38static inline struct vm_struct *get_io_area(unsigned long size)
39{
40 return get_vm_area(size, VM_IOREMAP);
41}
42
43
44static inline void free_io_area(void *addr)
45{
46 vfree((void *)(PAGE_MASK & (unsigned long)addr));
47}
48
49#else
50
51#define IO_SIZE PMD_SIZE
52
53static struct vm_struct *iolist;
54
55/*
56 * __free_io_area unmaps nearly everything, so be careful
57 * Currently it doesn't free pointer/page tables anymore but this
58 * wasn't used anyway and might be added later.
59 */
60static void __free_io_area(void *addr, unsigned long size)
61{
62 unsigned long virtaddr = (unsigned long)addr;
63 pgd_t *pgd_dir;
64 p4d_t *p4d_dir;
65 pud_t *pud_dir;
66 pmd_t *pmd_dir;
67 pte_t *pte_dir;
68
69 while ((long)size > 0) {
70 pgd_dir = pgd_offset_k(virtaddr);
71 p4d_dir = p4d_offset(pgd_dir, virtaddr);
72 pud_dir = pud_offset(p4d_dir, virtaddr);
73 if (pud_bad(*pud_dir)) {
74 printk("iounmap: bad pud(%08lx)\n", pud_val(*pud_dir));
75 pud_clear(pud_dir);
76 return;
77 }
78 pmd_dir = pmd_offset(pud_dir, virtaddr);
79
80#if CONFIG_PGTABLE_LEVELS == 3
81 if (CPU_IS_020_OR_030) {
82 int pmd_type = pmd_val(*pmd_dir) & _DESCTYPE_MASK;
83
84 if (pmd_type == _PAGE_PRESENT) {
85 pmd_clear(pmd_dir);
86 virtaddr += PMD_SIZE;
87 size -= PMD_SIZE;
88
89 } else if (pmd_type == 0)
90 continue;
91 }
92#endif
93
94 if (pmd_bad(*pmd_dir)) {
95 printk("iounmap: bad pmd (%08lx)\n", pmd_val(*pmd_dir));
96 pmd_clear(pmd_dir);
97 return;
98 }
99 pte_dir = pte_offset_kernel(pmd_dir, virtaddr);
100
101 pte_val(*pte_dir) = 0;
102 virtaddr += PAGE_SIZE;
103 size -= PAGE_SIZE;
104 }
105
106 flush_tlb_all();
107}
108
109static struct vm_struct *get_io_area(unsigned long size)
110{
111 unsigned long addr;
112 struct vm_struct **p, *tmp, *area;
113
114 area = kmalloc(sizeof(*area), GFP_KERNEL);
115 if (!area)
116 return NULL;
117 addr = KMAP_START;
118 for (p = &iolist; (tmp = *p) ; p = &tmp->next) {
119 if (size + addr < (unsigned long)tmp->addr)
120 break;
121 if (addr > KMAP_END-size) {
122 kfree(area);
123 return NULL;
124 }
125 addr = tmp->size + (unsigned long)tmp->addr;
126 }
127 area->addr = (void *)addr;
128 area->size = size + IO_SIZE;
129 area->next = *p;
130 *p = area;
131 return area;
132}
133
134static inline void free_io_area(void *addr)
135{
136 struct vm_struct **p, *tmp;
137
138 if (!addr)
139 return;
140 addr = (void *)((unsigned long)addr & -IO_SIZE);
141 for (p = &iolist ; (tmp = *p) ; p = &tmp->next) {
142 if (tmp->addr == addr) {
143 *p = tmp->next;
144 /* remove gap added in get_io_area() */
145 __free_io_area(tmp->addr, tmp->size - IO_SIZE);
146 kfree(tmp);
147 return;
148 }
149 }
150}
151
152#endif
153
154/*
155 * Map some physical address range into the kernel address space.
156 */
157/* Rewritten by Andreas Schwab to remove all races. */
158
159void __iomem *__ioremap(unsigned long physaddr, unsigned long size, int cacheflag)
160{
161 struct vm_struct *area;
162 unsigned long virtaddr, retaddr;
163 long offset;
164 pgd_t *pgd_dir;
165 p4d_t *p4d_dir;
166 pud_t *pud_dir;
167 pmd_t *pmd_dir;
168 pte_t *pte_dir;
169
170 /*
171 * Don't allow mappings that wrap..
172 */
173 if (!size || physaddr > (unsigned long)(-size))
174 return NULL;
175
176#ifdef CONFIG_AMIGA
177 if (MACH_IS_AMIGA) {
178 if ((physaddr >= 0x40000000) && (physaddr + size < 0x60000000)
179 && (cacheflag == IOMAP_NOCACHE_SER))
180 return (void __iomem *)physaddr;
181 }
182#endif
183#ifdef CONFIG_COLDFIRE
184 if (__cf_internalio(physaddr))
185 return (void __iomem *) physaddr;
186#endif
187
188#ifdef DEBUG
189 printk("ioremap: 0x%lx,0x%lx(%d) - ", physaddr, size, cacheflag);
190#endif
191 /*
192 * Mappings have to be aligned
193 */
194 offset = physaddr & (IO_SIZE - 1);
195 physaddr &= -IO_SIZE;
196 size = (size + offset + IO_SIZE - 1) & -IO_SIZE;
197
198 /*
199 * Ok, go for it..
200 */
201 area = get_io_area(size);
202 if (!area)
203 return NULL;
204
205 virtaddr = (unsigned long)area->addr;
206 retaddr = virtaddr + offset;
207#ifdef DEBUG
208 printk("0x%lx,0x%lx,0x%lx", physaddr, virtaddr, retaddr);
209#endif
210
211 /*
212 * add cache and table flags to physical address
213 */
214 if (CPU_IS_040_OR_060) {
215 physaddr |= (_PAGE_PRESENT | _PAGE_GLOBAL040 |
216 _PAGE_ACCESSED | _PAGE_DIRTY);
217 switch (cacheflag) {
218 case IOMAP_FULL_CACHING:
219 physaddr |= _PAGE_CACHE040;
220 break;
221 case IOMAP_NOCACHE_SER:
222 default:
223 physaddr |= _PAGE_NOCACHE_S;
224 break;
225 case IOMAP_NOCACHE_NONSER:
226 physaddr |= _PAGE_NOCACHE;
227 break;
228 case IOMAP_WRITETHROUGH:
229 physaddr |= _PAGE_CACHE040W;
230 break;
231 }
232 } else {
233 physaddr |= (_PAGE_PRESENT | _PAGE_ACCESSED |
234 _PAGE_DIRTY | _PAGE_READWRITE);
235 switch (cacheflag) {
236 case IOMAP_NOCACHE_SER:
237 case IOMAP_NOCACHE_NONSER:
238 default:
239 physaddr |= _PAGE_NOCACHE030;
240 break;
241 case IOMAP_FULL_CACHING:
242 case IOMAP_WRITETHROUGH:
243 break;
244 }
245 }
246
247 while ((long)size > 0) {
248#ifdef DEBUG
249 if (!(virtaddr & (PMD_SIZE-1)))
250 printk ("\npa=%#lx va=%#lx ", physaddr, virtaddr);
251#endif
252 pgd_dir = pgd_offset_k(virtaddr);
253 p4d_dir = p4d_offset(pgd_dir, virtaddr);
254 pud_dir = pud_offset(p4d_dir, virtaddr);
255 pmd_dir = pmd_alloc(&init_mm, pud_dir, virtaddr);
256 if (!pmd_dir) {
257 printk("ioremap: no mem for pmd_dir\n");
258 return NULL;
259 }
260
261#if CONFIG_PGTABLE_LEVELS == 3
262 if (CPU_IS_020_OR_030) {
263 pmd_val(*pmd_dir) = physaddr;
264 physaddr += PMD_SIZE;
265 virtaddr += PMD_SIZE;
266 size -= PMD_SIZE;
267 } else
268#endif
269 {
270 pte_dir = pte_alloc_kernel(pmd_dir, virtaddr);
271 if (!pte_dir) {
272 printk("ioremap: no mem for pte_dir\n");
273 return NULL;
274 }
275
276 pte_val(*pte_dir) = physaddr;
277 virtaddr += PAGE_SIZE;
278 physaddr += PAGE_SIZE;
279 size -= PAGE_SIZE;
280 }
281 }
282#ifdef DEBUG
283 printk("\n");
284#endif
285 flush_tlb_all();
286
287 return (void __iomem *)retaddr;
288}
289EXPORT_SYMBOL(__ioremap);
290
291/*
292 * Unmap an ioremap()ed region again
293 */
294void iounmap(void __iomem *addr)
295{
296#ifdef CONFIG_AMIGA
297 if ((!MACH_IS_AMIGA) ||
298 (((unsigned long)addr < 0x40000000) ||
299 ((unsigned long)addr > 0x60000000)))
300 free_io_area((__force void *)addr);
301#else
302#ifdef CONFIG_COLDFIRE
303 if (cf_internalio(addr))
304 return;
305#endif
306 free_io_area((__force void *)addr);
307#endif
308}
309EXPORT_SYMBOL(iounmap);
310
311/*
312 * Set new cache mode for some kernel address space.
313 * The caller must push data for that range itself, if such data may already
314 * be in the cache.
315 */
316void kernel_set_cachemode(void *addr, unsigned long size, int cmode)
317{
318 unsigned long virtaddr = (unsigned long)addr;
319 pgd_t *pgd_dir;
320 p4d_t *p4d_dir;
321 pud_t *pud_dir;
322 pmd_t *pmd_dir;
323 pte_t *pte_dir;
324
325 if (CPU_IS_040_OR_060) {
326 switch (cmode) {
327 case IOMAP_FULL_CACHING:
328 cmode = _PAGE_CACHE040;
329 break;
330 case IOMAP_NOCACHE_SER:
331 default:
332 cmode = _PAGE_NOCACHE_S;
333 break;
334 case IOMAP_NOCACHE_NONSER:
335 cmode = _PAGE_NOCACHE;
336 break;
337 case IOMAP_WRITETHROUGH:
338 cmode = _PAGE_CACHE040W;
339 break;
340 }
341 } else {
342 switch (cmode) {
343 case IOMAP_NOCACHE_SER:
344 case IOMAP_NOCACHE_NONSER:
345 default:
346 cmode = _PAGE_NOCACHE030;
347 break;
348 case IOMAP_FULL_CACHING:
349 case IOMAP_WRITETHROUGH:
350 cmode = 0;
351 }
352 }
353
354 while ((long)size > 0) {
355 pgd_dir = pgd_offset_k(virtaddr);
356 p4d_dir = p4d_offset(pgd_dir, virtaddr);
357 pud_dir = pud_offset(p4d_dir, virtaddr);
358 if (pud_bad(*pud_dir)) {
359 printk("iocachemode: bad pud(%08lx)\n", pud_val(*pud_dir));
360 pud_clear(pud_dir);
361 return;
362 }
363 pmd_dir = pmd_offset(pud_dir, virtaddr);
364
365#if CONFIG_PGTABLE_LEVELS == 3
366 if (CPU_IS_020_OR_030) {
367 unsigned long pmd = pmd_val(*pmd_dir);
368
369 if ((pmd & _DESCTYPE_MASK) == _PAGE_PRESENT) {
370 *pmd_dir = __pmd((pmd & _CACHEMASK040) | cmode);
371 virtaddr += PMD_SIZE;
372 size -= PMD_SIZE;
373 continue;
374 }
375 }
376#endif
377
378 if (pmd_bad(*pmd_dir)) {
379 printk("iocachemode: bad pmd (%08lx)\n", pmd_val(*pmd_dir));
380 pmd_clear(pmd_dir);
381 return;
382 }
383 pte_dir = pte_offset_kernel(pmd_dir, virtaddr);
384
385 pte_val(*pte_dir) = (pte_val(*pte_dir) & _CACHEMASK040) | cmode;
386 virtaddr += PAGE_SIZE;
387 size -= PAGE_SIZE;
388 }
389
390 flush_tlb_all();
391}
392EXPORT_SYMBOL(kernel_set_cachemode);
1/*
2 * linux/arch/m68k/mm/kmap.c
3 *
4 * Copyright (C) 1997 Roman Hodek
5 *
6 * 10/01/99 cleaned up the code and changing to the same interface
7 * used by other architectures /Roman Zippel
8 */
9
10#include <linux/module.h>
11#include <linux/mm.h>
12#include <linux/kernel.h>
13#include <linux/string.h>
14#include <linux/types.h>
15#include <linux/slab.h>
16#include <linux/vmalloc.h>
17
18#include <asm/setup.h>
19#include <asm/segment.h>
20#include <asm/page.h>
21#include <asm/pgalloc.h>
22#include <asm/io.h>
23
24#undef DEBUG
25
26#define PTRTREESIZE (256*1024)
27
28/*
29 * For 040/060 we can use the virtual memory area like other architectures,
30 * but for 020/030 we want to use early termination page descriptor and we
31 * can't mix this with normal page descriptors, so we have to copy that code
32 * (mm/vmalloc.c) and return appriorate aligned addresses.
33 */
34
35#ifdef CPU_M68040_OR_M68060_ONLY
36
37#define IO_SIZE PAGE_SIZE
38
39static inline struct vm_struct *get_io_area(unsigned long size)
40{
41 return get_vm_area(size, VM_IOREMAP);
42}
43
44
45static inline void free_io_area(void *addr)
46{
47 vfree((void *)(PAGE_MASK & (unsigned long)addr));
48}
49
50#else
51
52#define IO_SIZE (256*1024)
53
54static struct vm_struct *iolist;
55
56static struct vm_struct *get_io_area(unsigned long size)
57{
58 unsigned long addr;
59 struct vm_struct **p, *tmp, *area;
60
61 area = kmalloc(sizeof(*area), GFP_KERNEL);
62 if (!area)
63 return NULL;
64 addr = KMAP_START;
65 for (p = &iolist; (tmp = *p) ; p = &tmp->next) {
66 if (size + addr < (unsigned long)tmp->addr)
67 break;
68 if (addr > KMAP_END-size) {
69 kfree(area);
70 return NULL;
71 }
72 addr = tmp->size + (unsigned long)tmp->addr;
73 }
74 area->addr = (void *)addr;
75 area->size = size + IO_SIZE;
76 area->next = *p;
77 *p = area;
78 return area;
79}
80
81static inline void free_io_area(void *addr)
82{
83 struct vm_struct **p, *tmp;
84
85 if (!addr)
86 return;
87 addr = (void *)((unsigned long)addr & -IO_SIZE);
88 for (p = &iolist ; (tmp = *p) ; p = &tmp->next) {
89 if (tmp->addr == addr) {
90 *p = tmp->next;
91 __iounmap(tmp->addr, tmp->size);
92 kfree(tmp);
93 return;
94 }
95 }
96}
97
98#endif
99
100/*
101 * Map some physical address range into the kernel address space.
102 */
103/* Rewritten by Andreas Schwab to remove all races. */
104
105void __iomem *__ioremap(unsigned long physaddr, unsigned long size, int cacheflag)
106{
107 struct vm_struct *area;
108 unsigned long virtaddr, retaddr;
109 long offset;
110 pgd_t *pgd_dir;
111 pmd_t *pmd_dir;
112 pte_t *pte_dir;
113
114 /*
115 * Don't allow mappings that wrap..
116 */
117 if (!size || physaddr > (unsigned long)(-size))
118 return NULL;
119
120#ifdef CONFIG_AMIGA
121 if (MACH_IS_AMIGA) {
122 if ((physaddr >= 0x40000000) && (physaddr + size < 0x60000000)
123 && (cacheflag == IOMAP_NOCACHE_SER))
124 return (void __iomem *)physaddr;
125 }
126#endif
127
128#ifdef DEBUG
129 printk("ioremap: 0x%lx,0x%lx(%d) - ", physaddr, size, cacheflag);
130#endif
131 /*
132 * Mappings have to be aligned
133 */
134 offset = physaddr & (IO_SIZE - 1);
135 physaddr &= -IO_SIZE;
136 size = (size + offset + IO_SIZE - 1) & -IO_SIZE;
137
138 /*
139 * Ok, go for it..
140 */
141 area = get_io_area(size);
142 if (!area)
143 return NULL;
144
145 virtaddr = (unsigned long)area->addr;
146 retaddr = virtaddr + offset;
147#ifdef DEBUG
148 printk("0x%lx,0x%lx,0x%lx", physaddr, virtaddr, retaddr);
149#endif
150
151 /*
152 * add cache and table flags to physical address
153 */
154 if (CPU_IS_040_OR_060) {
155 physaddr |= (_PAGE_PRESENT | _PAGE_GLOBAL040 |
156 _PAGE_ACCESSED | _PAGE_DIRTY);
157 switch (cacheflag) {
158 case IOMAP_FULL_CACHING:
159 physaddr |= _PAGE_CACHE040;
160 break;
161 case IOMAP_NOCACHE_SER:
162 default:
163 physaddr |= _PAGE_NOCACHE_S;
164 break;
165 case IOMAP_NOCACHE_NONSER:
166 physaddr |= _PAGE_NOCACHE;
167 break;
168 case IOMAP_WRITETHROUGH:
169 physaddr |= _PAGE_CACHE040W;
170 break;
171 }
172 } else {
173 physaddr |= (_PAGE_PRESENT | _PAGE_ACCESSED |
174 _PAGE_DIRTY | _PAGE_READWRITE);
175 switch (cacheflag) {
176 case IOMAP_NOCACHE_SER:
177 case IOMAP_NOCACHE_NONSER:
178 default:
179 physaddr |= _PAGE_NOCACHE030;
180 break;
181 case IOMAP_FULL_CACHING:
182 case IOMAP_WRITETHROUGH:
183 break;
184 }
185 }
186
187 while ((long)size > 0) {
188#ifdef DEBUG
189 if (!(virtaddr & (PTRTREESIZE-1)))
190 printk ("\npa=%#lx va=%#lx ", physaddr, virtaddr);
191#endif
192 pgd_dir = pgd_offset_k(virtaddr);
193 pmd_dir = pmd_alloc(&init_mm, pgd_dir, virtaddr);
194 if (!pmd_dir) {
195 printk("ioremap: no mem for pmd_dir\n");
196 return NULL;
197 }
198
199 if (CPU_IS_020_OR_030) {
200 pmd_dir->pmd[(virtaddr/PTRTREESIZE) & 15] = physaddr;
201 physaddr += PTRTREESIZE;
202 virtaddr += PTRTREESIZE;
203 size -= PTRTREESIZE;
204 } else {
205 pte_dir = pte_alloc_kernel(pmd_dir, virtaddr);
206 if (!pte_dir) {
207 printk("ioremap: no mem for pte_dir\n");
208 return NULL;
209 }
210
211 pte_val(*pte_dir) = physaddr;
212 virtaddr += PAGE_SIZE;
213 physaddr += PAGE_SIZE;
214 size -= PAGE_SIZE;
215 }
216 }
217#ifdef DEBUG
218 printk("\n");
219#endif
220 flush_tlb_all();
221
222 return (void __iomem *)retaddr;
223}
224EXPORT_SYMBOL(__ioremap);
225
226/*
227 * Unmap a ioremap()ed region again
228 */
229void iounmap(void __iomem *addr)
230{
231#ifdef CONFIG_AMIGA
232 if ((!MACH_IS_AMIGA) ||
233 (((unsigned long)addr < 0x40000000) ||
234 ((unsigned long)addr > 0x60000000)))
235 free_io_area((__force void *)addr);
236#else
237 free_io_area((__force void *)addr);
238#endif
239}
240EXPORT_SYMBOL(iounmap);
241
242/*
243 * __iounmap unmaps nearly everything, so be careful
244 * it doesn't free currently pointer/page tables anymore but it
245 * wans't used anyway and might be added later.
246 */
247void __iounmap(void *addr, unsigned long size)
248{
249 unsigned long virtaddr = (unsigned long)addr;
250 pgd_t *pgd_dir;
251 pmd_t *pmd_dir;
252 pte_t *pte_dir;
253
254 while ((long)size > 0) {
255 pgd_dir = pgd_offset_k(virtaddr);
256 if (pgd_bad(*pgd_dir)) {
257 printk("iounmap: bad pgd(%08lx)\n", pgd_val(*pgd_dir));
258 pgd_clear(pgd_dir);
259 return;
260 }
261 pmd_dir = pmd_offset(pgd_dir, virtaddr);
262
263 if (CPU_IS_020_OR_030) {
264 int pmd_off = (virtaddr/PTRTREESIZE) & 15;
265 int pmd_type = pmd_dir->pmd[pmd_off] & _DESCTYPE_MASK;
266
267 if (pmd_type == _PAGE_PRESENT) {
268 pmd_dir->pmd[pmd_off] = 0;
269 virtaddr += PTRTREESIZE;
270 size -= PTRTREESIZE;
271 continue;
272 } else if (pmd_type == 0)
273 continue;
274 }
275
276 if (pmd_bad(*pmd_dir)) {
277 printk("iounmap: bad pmd (%08lx)\n", pmd_val(*pmd_dir));
278 pmd_clear(pmd_dir);
279 return;
280 }
281 pte_dir = pte_offset_kernel(pmd_dir, virtaddr);
282
283 pte_val(*pte_dir) = 0;
284 virtaddr += PAGE_SIZE;
285 size -= PAGE_SIZE;
286 }
287
288 flush_tlb_all();
289}
290
291/*
292 * Set new cache mode for some kernel address space.
293 * The caller must push data for that range itself, if such data may already
294 * be in the cache.
295 */
296void kernel_set_cachemode(void *addr, unsigned long size, int cmode)
297{
298 unsigned long virtaddr = (unsigned long)addr;
299 pgd_t *pgd_dir;
300 pmd_t *pmd_dir;
301 pte_t *pte_dir;
302
303 if (CPU_IS_040_OR_060) {
304 switch (cmode) {
305 case IOMAP_FULL_CACHING:
306 cmode = _PAGE_CACHE040;
307 break;
308 case IOMAP_NOCACHE_SER:
309 default:
310 cmode = _PAGE_NOCACHE_S;
311 break;
312 case IOMAP_NOCACHE_NONSER:
313 cmode = _PAGE_NOCACHE;
314 break;
315 case IOMAP_WRITETHROUGH:
316 cmode = _PAGE_CACHE040W;
317 break;
318 }
319 } else {
320 switch (cmode) {
321 case IOMAP_NOCACHE_SER:
322 case IOMAP_NOCACHE_NONSER:
323 default:
324 cmode = _PAGE_NOCACHE030;
325 break;
326 case IOMAP_FULL_CACHING:
327 case IOMAP_WRITETHROUGH:
328 cmode = 0;
329 }
330 }
331
332 while ((long)size > 0) {
333 pgd_dir = pgd_offset_k(virtaddr);
334 if (pgd_bad(*pgd_dir)) {
335 printk("iocachemode: bad pgd(%08lx)\n", pgd_val(*pgd_dir));
336 pgd_clear(pgd_dir);
337 return;
338 }
339 pmd_dir = pmd_offset(pgd_dir, virtaddr);
340
341 if (CPU_IS_020_OR_030) {
342 int pmd_off = (virtaddr/PTRTREESIZE) & 15;
343
344 if ((pmd_dir->pmd[pmd_off] & _DESCTYPE_MASK) == _PAGE_PRESENT) {
345 pmd_dir->pmd[pmd_off] = (pmd_dir->pmd[pmd_off] &
346 _CACHEMASK040) | cmode;
347 virtaddr += PTRTREESIZE;
348 size -= PTRTREESIZE;
349 continue;
350 }
351 }
352
353 if (pmd_bad(*pmd_dir)) {
354 printk("iocachemode: bad pmd (%08lx)\n", pmd_val(*pmd_dir));
355 pmd_clear(pmd_dir);
356 return;
357 }
358 pte_dir = pte_offset_kernel(pmd_dir, virtaddr);
359
360 pte_val(*pte_dir) = (pte_val(*pte_dir) & _CACHEMASK040) | cmode;
361 virtaddr += PAGE_SIZE;
362 size -= PAGE_SIZE;
363 }
364
365 flush_tlb_all();
366}
367EXPORT_SYMBOL(kernel_set_cachemode);