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10#ifndef __ASM_MEMORY_H
11#define __ASM_MEMORY_H
12
13#include <linux/const.h>
14#include <linux/sizes.h>
15#include <asm/page-def.h>
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20
21#define PCI_IO_SIZE SZ_16M
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32
33#define VMEMMAP_SHIFT (PAGE_SHIFT - STRUCT_PAGE_MAX_SHIFT)
34#define VMEMMAP_SIZE ((_PAGE_END(VA_BITS_MIN) - PAGE_OFFSET) >> VMEMMAP_SHIFT)
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42
43#define VA_BITS (CONFIG_ARM64_VA_BITS)
44#define _PAGE_OFFSET(va) (-(UL(1) << (va)))
45#define PAGE_OFFSET (_PAGE_OFFSET(VA_BITS))
46#define KIMAGE_VADDR (MODULES_END)
47#define BPF_JIT_REGION_START (_PAGE_END(VA_BITS_MIN))
48#define BPF_JIT_REGION_SIZE (SZ_128M)
49#define BPF_JIT_REGION_END (BPF_JIT_REGION_START + BPF_JIT_REGION_SIZE)
50#define MODULES_END (MODULES_VADDR + MODULES_VSIZE)
51#define MODULES_VADDR (BPF_JIT_REGION_END)
52#define MODULES_VSIZE (SZ_128M)
53#define VMEMMAP_START (-(UL(1) << (VA_BITS - VMEMMAP_SHIFT)))
54#define VMEMMAP_END (VMEMMAP_START + VMEMMAP_SIZE)
55#define PCI_IO_END (VMEMMAP_START - SZ_8M)
56#define PCI_IO_START (PCI_IO_END - PCI_IO_SIZE)
57#define FIXADDR_TOP (VMEMMAP_START - SZ_32M)
58
59#if VA_BITS > 48
60#define VA_BITS_MIN (48)
61#else
62#define VA_BITS_MIN (VA_BITS)
63#endif
64
65#define _PAGE_END(va) (-(UL(1) << ((va) - 1)))
66
67#define KERNEL_START _text
68#define KERNEL_END _end
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74
75#if defined(CONFIG_KASAN_GENERIC) || defined(CONFIG_KASAN_SW_TAGS)
76#define KASAN_SHADOW_OFFSET _AC(CONFIG_KASAN_SHADOW_OFFSET, UL)
77#define KASAN_SHADOW_END ((UL(1) << (64 - KASAN_SHADOW_SCALE_SHIFT)) \
78 + KASAN_SHADOW_OFFSET)
79#define PAGE_END (KASAN_SHADOW_END - (1UL << (vabits_actual - KASAN_SHADOW_SCALE_SHIFT)))
80#define KASAN_THREAD_SHIFT 1
81#else
82#define KASAN_THREAD_SHIFT 0
83#define PAGE_END (_PAGE_END(VA_BITS_MIN))
84#endif
85
86#define MIN_THREAD_SHIFT (14 + KASAN_THREAD_SHIFT)
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91
92#if defined(CONFIG_VMAP_STACK) && (MIN_THREAD_SHIFT < PAGE_SHIFT)
93#define THREAD_SHIFT PAGE_SHIFT
94#else
95#define THREAD_SHIFT MIN_THREAD_SHIFT
96#endif
97
98#if THREAD_SHIFT >= PAGE_SHIFT
99#define THREAD_SIZE_ORDER (THREAD_SHIFT - PAGE_SHIFT)
100#endif
101
102#define THREAD_SIZE (UL(1) << THREAD_SHIFT)
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108
109#ifdef CONFIG_VMAP_STACK
110#define THREAD_ALIGN (2 * THREAD_SIZE)
111#else
112#define THREAD_ALIGN THREAD_SIZE
113#endif
114
115#define IRQ_STACK_SIZE THREAD_SIZE
116
117#define OVERFLOW_STACK_SIZE SZ_4K
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125
126#define SEGMENT_ALIGN SZ_64K
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134
135#define MT_NORMAL 0
136#define MT_NORMAL_TAGGED 1
137#define MT_NORMAL_NC 2
138#define MT_DEVICE_nGnRnE 3
139#define MT_DEVICE_nGnRE 4
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143
144#define MT_S2_NORMAL 0xf
145#define MT_S2_DEVICE_nGnRE 0x1
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151#define MT_S2_FWB_NORMAL 6
152#define MT_S2_FWB_DEVICE_nGnRE 1
153
154#ifdef CONFIG_ARM64_4K_PAGES
155#define IOREMAP_MAX_ORDER (PUD_SHIFT)
156#else
157#define IOREMAP_MAX_ORDER (PMD_SHIFT)
158#endif
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163
164#define RESERVED_SWAPPER_OFFSET (PAGE_SIZE)
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169
170#define TRAMP_SWAPPER_OFFSET (2 * PAGE_SIZE)
171
172#ifndef __ASSEMBLY__
173
174#include <linux/bitops.h>
175#include <linux/compiler.h>
176#include <linux/mmdebug.h>
177#include <linux/types.h>
178#include <asm/bug.h>
179
180extern u64 vabits_actual;
181
182extern s64 memstart_addr;
183
184#define PHYS_OFFSET ({ VM_BUG_ON(memstart_addr & 1); memstart_addr; })
185
186
187extern u64 kimage_vaddr;
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190extern u64 kimage_voffset;
191
192static inline unsigned long kaslr_offset(void)
193{
194 return kimage_vaddr - KIMAGE_VADDR;
195}
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199
200#define MIN_MEMBLOCK_ADDR 0
201#define MAX_MEMBLOCK_ADDR U64_MAX
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210
211#define PHYS_PFN_OFFSET (PHYS_OFFSET >> PAGE_SHIFT)
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217
218#define __untagged_addr(addr) \
219 ((__force __typeof__(addr))sign_extend64((__force u64)(addr), 55))
220
221#define untagged_addr(addr) ({ \
222 u64 __addr = (__force u64)(addr); \
223 __addr &= __untagged_addr(__addr); \
224 (__force __typeof__(addr))__addr; \
225})
226
227#if defined(CONFIG_KASAN_SW_TAGS) || defined(CONFIG_KASAN_HW_TAGS)
228#define __tag_shifted(tag) ((u64)(tag) << 56)
229#define __tag_reset(addr) __untagged_addr(addr)
230#define __tag_get(addr) (__u8)((u64)(addr) >> 56)
231#else
232#define __tag_shifted(tag) 0UL
233#define __tag_reset(addr) (addr)
234#define __tag_get(addr) 0
235#endif
236
237static inline const void *__tag_set(const void *addr, u8 tag)
238{
239 u64 __addr = (u64)addr & ~__tag_shifted(0xff);
240 return (const void *)(__addr | __tag_shifted(tag));
241}
242
243#ifdef CONFIG_KASAN_HW_TAGS
244#define arch_enable_tagging_sync() mte_enable_kernel_sync()
245#define arch_enable_tagging_async() mte_enable_kernel_async()
246#define arch_force_async_tag_fault() mte_check_tfsr_exit()
247#define arch_get_random_tag() mte_get_random_tag()
248#define arch_get_mem_tag(addr) mte_get_mem_tag(addr)
249#define arch_set_mem_tag_range(addr, size, tag, init) \
250 mte_set_mem_tag_range((addr), (size), (tag), (init))
251#endif
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264
265#define __is_lm_address(addr) (((u64)(addr) - PAGE_OFFSET) < (PAGE_END - PAGE_OFFSET))
266
267#define __lm_to_phys(addr) (((addr) - PAGE_OFFSET) + PHYS_OFFSET)
268#define __kimg_to_phys(addr) ((addr) - kimage_voffset)
269
270#define __virt_to_phys_nodebug(x) ({ \
271 phys_addr_t __x = (phys_addr_t)(__tag_reset(x)); \
272 __is_lm_address(__x) ? __lm_to_phys(__x) : __kimg_to_phys(__x); \
273})
274
275#define __pa_symbol_nodebug(x) __kimg_to_phys((phys_addr_t)(x))
276
277#ifdef CONFIG_DEBUG_VIRTUAL
278extern phys_addr_t __virt_to_phys(unsigned long x);
279extern phys_addr_t __phys_addr_symbol(unsigned long x);
280#else
281#define __virt_to_phys(x) __virt_to_phys_nodebug(x)
282#define __phys_addr_symbol(x) __pa_symbol_nodebug(x)
283#endif
284
285#define __phys_to_virt(x) ((unsigned long)((x) - PHYS_OFFSET) | PAGE_OFFSET)
286#define __phys_to_kimg(x) ((unsigned long)((x) + kimage_voffset))
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290
291#define page_to_phys(page) (__pfn_to_phys(page_to_pfn(page)))
292#define phys_to_page(phys) (pfn_to_page(__phys_to_pfn(phys)))
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298
299#define virt_to_phys virt_to_phys
300static inline phys_addr_t virt_to_phys(const volatile void *x)
301{
302 return __virt_to_phys((unsigned long)(x));
303}
304
305#define phys_to_virt phys_to_virt
306static inline void *phys_to_virt(phys_addr_t x)
307{
308 return (void *)(__phys_to_virt(x));
309}
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314#define __pa(x) __virt_to_phys((unsigned long)(x))
315#define __pa_symbol(x) __phys_addr_symbol(RELOC_HIDE((unsigned long)(x), 0))
316#define __pa_nodebug(x) __virt_to_phys_nodebug((unsigned long)(x))
317#define __va(x) ((void *)__phys_to_virt((phys_addr_t)(x)))
318#define pfn_to_kaddr(pfn) __va((pfn) << PAGE_SHIFT)
319#define virt_to_pfn(x) __phys_to_pfn(__virt_to_phys((unsigned long)(x)))
320#define sym_to_pfn(x) __phys_to_pfn(__pa_symbol(x))
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325
326#define ARCH_PFN_OFFSET ((unsigned long)PHYS_PFN_OFFSET)
327
328#if defined(CONFIG_DEBUG_VIRTUAL)
329#define page_to_virt(x) ({ \
330 __typeof__(x) __page = x; \
331 void *__addr = __va(page_to_phys(__page)); \
332 (void *)__tag_set((const void *)__addr, page_kasan_tag(__page));\
333})
334#define virt_to_page(x) pfn_to_page(virt_to_pfn(x))
335#else
336#define page_to_virt(x) ({ \
337 __typeof__(x) __page = x; \
338 u64 __idx = ((u64)__page - VMEMMAP_START) / sizeof(struct page);\
339 u64 __addr = PAGE_OFFSET + (__idx * PAGE_SIZE); \
340 (void *)__tag_set((const void *)__addr, page_kasan_tag(__page));\
341})
342
343#define virt_to_page(x) ({ \
344 u64 __idx = (__tag_reset((u64)x) - PAGE_OFFSET) / PAGE_SIZE; \
345 u64 __addr = VMEMMAP_START + (__idx * sizeof(struct page)); \
346 (struct page *)__addr; \
347})
348#endif
349
350#define virt_addr_valid(addr) ({ \
351 __typeof__(addr) __addr = __tag_reset(addr); \
352 __is_lm_address(__addr) && pfn_is_map_memory(virt_to_pfn(__addr)); \
353})
354
355void dump_mem_limit(void);
356#endif
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365#if defined(CONFIG_EFI) && defined(CONFIG_ARM_GIC_V3_ITS)
366# define INIT_MEMBLOCK_RESERVED_REGIONS (INIT_MEMBLOCK_REGIONS + NR_CPUS + 1)
367#endif
368
369#include <asm-generic/memory_model.h>
370
371#endif
372