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13#ifndef __ASM_ARM_MEMORY_H
14#define __ASM_ARM_MEMORY_H
15
16#include <linux/compiler.h>
17#include <linux/const.h>
18#include <linux/types.h>
19#include <linux/sizes.h>
20
21#ifdef CONFIG_NEED_MACH_MEMORY_H
22#include <mach/memory.h>
23#endif
24
25
26
27
28
29#define UL(x) _AC(x, UL)
30
31
32#define PAGE_OFFSET UL(CONFIG_PAGE_OFFSET)
33
34#ifdef CONFIG_MMU
35
36
37
38
39
40#define TASK_SIZE (UL(CONFIG_PAGE_OFFSET) - UL(SZ_16M))
41#define TASK_UNMAPPED_BASE ALIGN(TASK_SIZE / 3, SZ_16M)
42
43
44
45
46#define TASK_SIZE_26 (UL(1) << 26)
47
48
49
50
51
52#ifndef CONFIG_THUMB2_KERNEL
53#define MODULES_VADDR (PAGE_OFFSET - SZ_16M)
54#else
55
56#define MODULES_VADDR (PAGE_OFFSET - SZ_8M)
57#endif
58
59#if TASK_SIZE > MODULES_VADDR
60#error Top of user space clashes with start of module space
61#endif
62
63
64
65
66#ifdef CONFIG_HIGHMEM
67#define MODULES_END (PAGE_OFFSET - PMD_SIZE)
68#else
69#define MODULES_END (PAGE_OFFSET)
70#endif
71
72
73
74
75
76
77#define XIP_VIRT_ADDR(physaddr) (MODULES_VADDR + ((physaddr) & 0x000fffff))
78
79
80
81
82#define IOREMAP_MAX_ORDER 24
83
84#else
85
86
87
88
89
90
91
92#define TASK_SIZE UL(0xffffffff)
93
94#ifndef TASK_UNMAPPED_BASE
95#define TASK_UNMAPPED_BASE UL(0x00000000)
96#endif
97
98#ifndef END_MEM
99#define END_MEM (UL(CONFIG_DRAM_BASE) + CONFIG_DRAM_SIZE)
100#endif
101
102
103
104
105#define MODULES_END (END_MEM)
106#define MODULES_VADDR PAGE_OFFSET
107
108#define XIP_VIRT_ADDR(physaddr) (physaddr)
109
110#endif
111
112
113
114
115
116#ifdef CONFIG_HAVE_TCM
117#define ITCM_OFFSET UL(0xfffe0000)
118#define DTCM_OFFSET UL(0xfffe8000)
119#endif
120
121
122
123
124#define __phys_to_pfn(paddr) ((unsigned long)((paddr) >> PAGE_SHIFT))
125#define __pfn_to_phys(pfn) ((phys_addr_t)(pfn) << PAGE_SHIFT)
126
127
128
129
130#define page_to_phys(page) (__pfn_to_phys(page_to_pfn(page)))
131#define phys_to_page(phys) (pfn_to_page(__phys_to_pfn(phys)))
132
133
134
135
136
137
138
139#define PLAT_PHYS_OFFSET UL(CONFIG_PHYS_OFFSET)
140
141#ifndef __ASSEMBLY__
142
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147
148
149
150
151#if defined(__virt_to_phys)
152#define PHYS_OFFSET PLAT_PHYS_OFFSET
153#define PHYS_PFN_OFFSET ((unsigned long)(PHYS_OFFSET >> PAGE_SHIFT))
154
155#define virt_to_pfn(kaddr) (__pa(kaddr) >> PAGE_SHIFT)
156
157#elif defined(CONFIG_ARM_PATCH_PHYS_VIRT)
158
159
160
161
162
163#define __PV_BITS_31_24 0x81000000
164#define __PV_BITS_7_0 0x81
165
166extern unsigned long __pv_phys_pfn_offset;
167extern u64 __pv_offset;
168extern void fixup_pv_table(const void *, unsigned long);
169extern const void *__pv_table_begin, *__pv_table_end;
170
171#define PHYS_OFFSET ((phys_addr_t)__pv_phys_pfn_offset << PAGE_SHIFT)
172#define PHYS_PFN_OFFSET (__pv_phys_pfn_offset)
173
174#define virt_to_pfn(kaddr) \
175 ((((unsigned long)(kaddr) - PAGE_OFFSET) >> PAGE_SHIFT) + \
176 PHYS_PFN_OFFSET)
177
178#define __pv_stub(from,to,instr,type) \
179 __asm__("@ __pv_stub\n" \
180 "1: " instr " %0, %1, %2\n" \
181 " .pushsection .pv_table,\"a\"\n" \
182 " .long 1b\n" \
183 " .popsection\n" \
184 : "=r" (to) \
185 : "r" (from), "I" (type))
186
187#define __pv_stub_mov_hi(t) \
188 __asm__ volatile("@ __pv_stub_mov\n" \
189 "1: mov %R0, %1\n" \
190 " .pushsection .pv_table,\"a\"\n" \
191 " .long 1b\n" \
192 " .popsection\n" \
193 : "=r" (t) \
194 : "I" (__PV_BITS_7_0))
195
196#define __pv_add_carry_stub(x, y) \
197 __asm__ volatile("@ __pv_add_carry_stub\n" \
198 "1: adds %Q0, %1, %2\n" \
199 " adc %R0, %R0, #0\n" \
200 " .pushsection .pv_table,\"a\"\n" \
201 " .long 1b\n" \
202 " .popsection\n" \
203 : "+r" (y) \
204 : "r" (x), "I" (__PV_BITS_31_24) \
205 : "cc")
206
207static inline phys_addr_t __virt_to_phys(unsigned long x)
208{
209 phys_addr_t t;
210
211 if (sizeof(phys_addr_t) == 4) {
212 __pv_stub(x, t, "add", __PV_BITS_31_24);
213 } else {
214 __pv_stub_mov_hi(t);
215 __pv_add_carry_stub(x, t);
216 }
217 return t;
218}
219
220static inline unsigned long __phys_to_virt(phys_addr_t x)
221{
222 unsigned long t;
223
224
225
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227
228
229
230 __pv_stub((unsigned long) x, t, "sub", __PV_BITS_31_24);
231 return t;
232}
233
234#else
235
236#define PHYS_OFFSET PLAT_PHYS_OFFSET
237#define PHYS_PFN_OFFSET ((unsigned long)(PHYS_OFFSET >> PAGE_SHIFT))
238
239static inline phys_addr_t __virt_to_phys(unsigned long x)
240{
241 return (phys_addr_t)x - PAGE_OFFSET + PHYS_OFFSET;
242}
243
244static inline unsigned long __phys_to_virt(phys_addr_t x)
245{
246 return x - PHYS_OFFSET + PAGE_OFFSET;
247}
248
249#define virt_to_pfn(kaddr) \
250 ((((unsigned long)(kaddr) - PAGE_OFFSET) >> PAGE_SHIFT) + \
251 PHYS_PFN_OFFSET)
252
253#endif
254
255
256
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258
259
260
261#define virt_to_phys virt_to_phys
262static inline phys_addr_t virt_to_phys(const volatile void *x)
263{
264 return __virt_to_phys((unsigned long)(x));
265}
266
267#define phys_to_virt phys_to_virt
268static inline void *phys_to_virt(phys_addr_t x)
269{
270 return (void *)__phys_to_virt(x);
271}
272
273
274
275
276#define __pa(x) __virt_to_phys((unsigned long)(x))
277#define __va(x) ((void *)__phys_to_virt((phys_addr_t)(x)))
278#define pfn_to_kaddr(pfn) __va((phys_addr_t)(pfn) << PAGE_SHIFT)
279
280extern phys_addr_t (*arch_virt_to_idmap)(unsigned long x);
281
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285
286
287static inline phys_addr_t __virt_to_idmap(unsigned long x)
288{
289 if (IS_ENABLED(CONFIG_MMU) && arch_virt_to_idmap)
290 return arch_virt_to_idmap(x);
291 else
292 return __virt_to_phys(x);
293}
294
295#define virt_to_idmap(x) __virt_to_idmap((unsigned long)(x))
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301
302
303#ifndef __virt_to_bus
304#define __virt_to_bus __virt_to_phys
305#define __bus_to_virt __phys_to_virt
306#define __pfn_to_bus(x) __pfn_to_phys(x)
307#define __bus_to_pfn(x) __phys_to_pfn(x)
308#endif
309
310#ifdef CONFIG_VIRT_TO_BUS
311#define virt_to_bus virt_to_bus
312static inline __deprecated unsigned long virt_to_bus(void *x)
313{
314 return __virt_to_bus((unsigned long)x);
315}
316
317#define bus_to_virt bus_to_virt
318static inline __deprecated void *bus_to_virt(unsigned long x)
319{
320 return (void *)__bus_to_virt(x);
321}
322#endif
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330
331
332
333#define ARCH_PFN_OFFSET PHYS_PFN_OFFSET
334
335#define virt_to_page(kaddr) pfn_to_page(virt_to_pfn(kaddr))
336#define virt_addr_valid(kaddr) (((unsigned long)(kaddr) >= PAGE_OFFSET && (unsigned long)(kaddr) < (unsigned long)high_memory) \
337 && pfn_valid(virt_to_pfn(kaddr)))
338
339#endif
340
341#include <asm-generic/memory_model.h>
342
343#endif
344