25  * @name Bit shifts and masks for MPU entry registers.
31  * Number of bits to shift for start address in MPU entry register.
33  * This is only used for aligning the value to the MPU entry register,
39  * Bit mask of start address in MPU entry register.
41  * This is only used for aligning the value to the MPU entry register,
46 /** Number of bits to shift for enable bit in MPU entry register. */
49 /** Bit mask of enable bit in MPU entry register. */
52 /** Number of bits to shift for lock bit in MPU entry register. */
55 /** Bit mask of lock bit in MPU entry register. */
58 /** Number of bits to shift for access rights in MPU entry register. */
61 /** Bit mask of access rights in MPU entry register. */
65 /** Number of bits to shift for memory type in MPU entry register. */
68 /** Bit mask of memory type in MPU entry register. */
72 /** Bit mask for foreground entry returned by probing. */
75 /** Bit mask for background entry returned by probing. */
78 /** Bit mask used to determine if entry is valid returned by probing. */
104  * Define one MPU entry of type struct xtensa_mpu_entry.
171  * @brief Probe for protection TLB entry from an address.
186  * @name MPU entry internal helper functions.
192  * @brief Return the start address encoded in the MPU entry.
194  * @param entry Pointer to the MPU entry.
199 uintptr_t xtensa_mpu_entry_start_address_get(const struct xtensa_mpu_entry *entry)  in xtensa_mpu_entry_start_address_get()  argument
201 	return (entry->as.p.start_addr << XTENSA_MPU_ENTRY_REG_START_ADDR_SHIFT);  in xtensa_mpu_entry_start_address_get()
205  * @brief Set the start address encoded in the MPU entry.
207  * @param entry Pointer to the MPU entry.
211 void xtensa_mpu_entry_start_address_set(struct xtensa_mpu_entry *entry, uintptr_t addr)  in xtensa_mpu_entry_start_address_set()  argument
213 	entry->as.p.start_addr = addr >> XTENSA_MPU_ENTRY_REG_START_ADDR_SHIFT;  in xtensa_mpu_entry_start_address_set()
217  * @brief Return the lock bit encoded in the MPU entry.
219  * @param entry Pointer to the MPU entry.
225 bool xtensa_mpu_entry_lock_get(const struct xtensa_mpu_entry *entry)  in xtensa_mpu_entry_lock_get()  argument
227 	return entry->as.p.lock != 0;  in xtensa_mpu_entry_lock_get()
231  * @brief Set the lock bit encoded in the MPU entry.
233  * @param entry Pointer to the MPU entry.
234  * @param lock True if to lock the MPU entry.
237 void xtensa_mpu_entry_lock_set(struct xtensa_mpu_entry *entry, bool lock)  in xtensa_mpu_entry_lock_set()  argument
239 	entry->as.p.lock = lock ? 1 : 0;  in xtensa_mpu_entry_lock_set()
243  * @brief Return the enable bit encoded in the MPU entry.
245  * @param entry Pointer to the MPU entry.
251 bool xtensa_mpu_entry_enable_get(const struct xtensa_mpu_entry *entry)  in xtensa_mpu_entry_enable_get()  argument
253 	return entry->as.p.enable != 0;  in xtensa_mpu_entry_enable_get()
257  * @brief Set the enable bit encoded in the MPU entry.
259  * @param entry Pointer to the MPU entry.
260  * @param en True if to enable the MPU entry.
263 void xtensa_mpu_entry_enable_set(struct xtensa_mpu_entry *entry, bool en)  in xtensa_mpu_entry_enable_set()  argument
265 	entry->as.p.enable = en ? 1 : 0;  in xtensa_mpu_entry_enable_set()
269  * @brief Return the access rights encoded in the MPU entry.
271  * @param entry Pointer to the MPU entry.
276 uint8_t xtensa_mpu_entry_access_rights_get(const struct xtensa_mpu_entry *entry)  in xtensa_mpu_entry_access_rights_get()  argument
278 	return entry->at.p.access_rights;  in xtensa_mpu_entry_access_rights_get()
282  * @brief Set the lock bit encoded in the MPU entry.
284  * @param entry Pointer to the MPU entry.
288 void xtensa_mpu_entry_access_rights_set(struct xtensa_mpu_entry *entry, uint8_t access_rights)  in xtensa_mpu_entry_access_rights_set()  argument
290 	entry->at.p.access_rights = access_rights;  in xtensa_mpu_entry_access_rights_set()
294  * @brief Return the memory type encoded in the MPU entry.
296  * @param entry Pointer to the MPU entry.
301 uint16_t xtensa_mpu_entry_memory_type_get(const struct xtensa_mpu_entry *entry)  in xtensa_mpu_entry_memory_type_get()  argument
303 	return entry->at.p.memory_type;  in xtensa_mpu_entry_memory_type_get()
307  * @brief Set the memory type in the MPU entry.
309  * @param entry Pointer to the MPU entry.
313 void xtensa_mpu_entry_memory_type_set(struct xtensa_mpu_entry *entry, uint16_t memory_type)  in xtensa_mpu_entry_memory_type_set()  argument
315 	entry->at.p.memory_type = memory_type;  in xtensa_mpu_entry_memory_type_set()
319  * @brief Set both access rights and memory type of a MPU entry.
321  * @param entry Pointer to the MPU entry.
326 void xtensa_mpu_entry_attributes_set(struct xtensa_mpu_entry *entry,  in xtensa_mpu_entry_attributes_set()  argument
329 	xtensa_mpu_entry_access_rights_set(entry, access_rights);  in xtensa_mpu_entry_attributes_set()
330 	xtensa_mpu_entry_memory_type_set(entry, memory_type);  in xtensa_mpu_entry_attributes_set()
334  * @brief Set fields in MPU entry so it will be functional.
337  * of an entry.
341  * @param entry Pointer to the entry to be manipulated.
343  * @param enable Whether this entry should be enabled.
344  * @param access_rights Access rights for the entry.
345  * @param memory_type Memory type for the entry.
348 void xtensa_mpu_entry_set(struct xtensa_mpu_entry *entry, uintptr_t start_address,  in xtensa_mpu_entry_set()  argument
351 	uint8_t segment = entry->at.p.segment;  in xtensa_mpu_entry_set()
354 	entry->as.raw = 0;  in xtensa_mpu_entry_set()
355 	entry->at.raw = 0;  in xtensa_mpu_entry_set()
357 	xtensa_mpu_entry_start_address_set(entry, start_address);  in xtensa_mpu_entry_set()
358 	xtensa_mpu_entry_enable_set(entry, enable);  in xtensa_mpu_entry_set()
359 	xtensa_mpu_entry_access_rights_set(entry, access_rights);  in xtensa_mpu_entry_set()
360 	xtensa_mpu_entry_memory_type_set(entry, memory_type);  in xtensa_mpu_entry_set()
362 	entry->at.p.segment = segment;  in xtensa_mpu_entry_set()
368  * @param entry1 MPU entry #1
369  * @param entry2 MPU entry #2.
383  * @param entry1 MPU entry #1.
384  * @param entry2 MPU entry #2.
398  * @param entry1 MPU entry #1.
399  * @param entry2 MPU entry #2.
414  * @param entry1 MPU entry #1.
415  * @param entry2 MPU entry #2.