Lines Matching +full:permission +full:- +full:flags

4  * SPDX-License-Identifier: Apache-2.0
36 /** Write-through caching. Used by certain drivers. */
39 /** Full write-back caching. Any RAM mapped wants this. */
43  * ARM64 Specific flags are defined in arch/arm64/arm_mem.h,
44  * pay attention to be not conflicted when updating these flags.
47 /** Reserved bits for cache modes in k_map() flags argument */
48 #define K_MEM_CACHE_MASK	(BIT(3) - 1)
53  * @name Region permission attributes.
55  * Default is read-only, no user, no exec
60 /** Region will have read/write access (and not read-only) */
66 /** Region will be accessible to user mode (normally supervisor-only) */
92  * @name k_mem_map() control flags
111  * Such memory is guaranteed to never produce a page fault due to page-outs
112  * or copy-on-write once the mapping call has returned. Physical page frames
113  * will be pre-fetched as necessary and pinned.
145  * concurrent memory mappings or page-ins take place.
157  * provided flags argument.
160  * K_MEM_PERM_USER flags here; instead manage the region's permissions
171  * Pages mapped in this way have write-back cache settings.
173  * The returned virtual memory pointer will be page-aligned. The size
174  * parameter, and any base address for re-mapping purposes must be page-
181  * Many K_MEM_MAP_* flags have been implemented to alter the behavior of this
182  * function, with details in the documentation for these flags.
184  * @param size Size of the memory mapping. This must be page-aligned.
185  * @param flags K_MEM_PERM_*, K_MEM_MAP_* control flags.
190 static inline void *k_mem_map(size_t size, uint32_t flags)  in k_mem_map()  argument
192 	return k_mem_map_phys_guard((uintptr_t)NULL, size, flags, true);  in k_mem_map()
199  * This maps backing-store "location" tokens into Zephyr's address space.
206  * provided flags argument.
209  * K_MEM_PERM_USER flags here; instead manage the region's permissions
216  * The provided backing-store "location" token must be linearly incrementable
219  * Allocated pages will have write-back cache settings.
221  * The returned virtual memory pointer will be page-aligned. The size
222  * parameter, and any base address for re-mapping purposes must be page-
230  * @param size Size of the memory mapping. This must be page-aligned.
231  * @param flags K_MEM_PERM_*, K_MEM_MAP_* control flags.
236 static inline void *k_mem_map_unpaged(uintptr_t location, size_t size, uint32_t flags)  in k_mem_map_unpaged()  argument
238 	flags |= K_MEM_MAP_UNPAGED;  in k_mem_map_unpaged()
239 	return k_mem_map_phys_guard(location, size, flags, false);  in k_mem_map_unpaged()
244  * Un-map mapped memory
246  * This removes a memory mapping for the provided page-aligned region.
247  * Associated page frames will be free and the kernel may re-use the associated
253  * @param addr Page-aligned memory region base virtual address
254  * @param size Page-aligned memory region size
262  * Modify memory mapping attribute flags
264  * This updates caching, access and control flags for the provided
265  * page-aligned memory region.
271  * @param addr Page-aligned memory region base virtual address
272  * @param size Page-aligned memory region size
273  * @param flags K_MEM_PERM_*, K_MEM_MAP_* control flags.
276 int k_mem_update_flags(void *addr, size_t size, uint32_t flags);