4  * SPDX-License-Identifier: Apache-2.0
9 #include <zephyr/linker/linker-defs.h>
11 #include <zephyr/dt-bindings/memory-attr/memory-attr-arm.h>
22 	struct shared_multi_heap_region region;  member
28 		.region = {							\
41 static void smh_reg_map(struct shared_multi_heap_region *region)  in smh_reg_map()  argument
46 	mem_attr = (region->attr == SMH_REG_ATTR_CACHEABLE) ? K_MEM_CACHE_WB : K_MEM_CACHE_NONE;  in smh_reg_map()
49 	k_mem_map_phys_bare(&v_addr, region->addr, region->size, mem_attr);  in smh_reg_map()
51 	region->addr = (uintptr_t) v_addr;  in smh_reg_map()
56  * Given a virtual address retrieve the original memory region that the mapping
62 		if ((uintptr_t) v_addr >= map[reg].region.addr &&  in get_region_map()
63 		    (uintptr_t) v_addr < map[reg].region.addr + map[reg].region.size) {  in get_region_map()
73 	 * All the memory regions defined in the DT with the MPU property `RAM`  in mpu_to_reg_attr()
74 	 * can be accessed and memory can be retrieved from using the attribute  in mpu_to_reg_attr()
77 	 * All the memory regions defined in the DT with the MPU property  in mpu_to_reg_attr()
78 	 * `RAM_NOCACHE` can be accessed and memory can be retrieved from using  in mpu_to_reg_attr()
81 	 * [MPU attr]   -> [SMH attr]  in mpu_to_reg_attr()
83 	 * RAM          -> SMH_REG_ATTR_CACHEABLE  in mpu_to_reg_attr()
84 	 * RAM_NOCACHE  -> SMH_REG_ATTR_NON_CACHEABLE  in mpu_to_reg_attr()
107 		/* zephyr,memory-attr property not found. Skip it. */  in fill_multi_heap()
108 		if (reg_map->region.attr == DT_MEM_ARM_MPU_UNKNOWN) {  in fill_multi_heap()
112 		/* Convert MPU attributes to shared-multi-heap capabilities */  in fill_multi_heap()
113 		reg_map->region.attr = mpu_to_reg_attr(reg_map->region.attr);  in fill_multi_heap()
116 		reg_map->p_addr = reg_map->region.addr;  in fill_multi_heap()
120 		 * For MMU-enabled platform we have to MMU-map the physical  in fill_multi_heap()
121 		 * address retrieved by DT at run-time because the SMH  in fill_multi_heap()
124 		 * For MPU-enabled platform the code is assuming that the  in fill_multi_heap()
125 		 * region are configured at build-time, so no map is needed.  in fill_multi_heap()
127 		smh_reg_map(&reg_map->region);  in fill_multi_heap()
130 		shared_multi_heap_add(&reg_map->region, NULL);  in fill_multi_heap()
144 	 * Return -EALREADY if already inited  in ZTEST()
147 	zassert_equal(-EALREADY, ret, "second init should fail");  in ZTEST()
150 	 * Fill the buffer pool with the memory heaps coming from DT  in ZTEST()
156 	 * smaller region RES0  in ZTEST()
161 	zassert_equal(reg_map->p_addr, RES0_CACHE_ADDR, "block in the wrong memory region");  in ZTEST()
162 	zassert_equal(reg_map->region.attr, SMH_REG_ATTR_CACHEABLE, "wrong memory attribute");  in ZTEST()
166 	 * smaller cacheable region RES0  in ZTEST()
171 	zassert_equal(reg_map->p_addr, RES0_CACHE_ADDR, "block in the wrong memory region");  in ZTEST()
172 	zassert_equal(reg_map->region.attr, SMH_REG_ATTR_CACHEABLE, "wrong memory attribute");  in ZTEST()
176 	 * bigger cacheable region RES2  in ZTEST()
181 	zassert_equal(reg_map->p_addr, RES2_CACHE_ADDR, "block in the wrong memory region");  in ZTEST()
182 	zassert_equal(reg_map->region.attr, SMH_REG_ATTR_CACHEABLE, "wrong memory attribute");  in ZTEST()
185 	 * Request a non-cacheable chunk. It should be allocated in the  in ZTEST()
186 	 * non-cacheable region RES1  in ZTEST()
191 	zassert_equal(reg_map->p_addr, RES1_NOCACHE_ADDR, "block in the wrong memory region");  in ZTEST()
192 	zassert_equal(reg_map->region.attr, SMH_REG_ATTR_NON_CACHEABLE, "wrong memory attribute");  in ZTEST()
195 	 * Request again a non-cacheable chunk. It should be allocated in the  in ZTEST()
196 	 * non-cacheable region RES1  in ZTEST()
201 	zassert_equal(reg_map->p_addr, RES1_NOCACHE_ADDR, "block in the wrong memory region");  in ZTEST()
202 	zassert_equal(reg_map->region.attr, SMH_REG_ATTR_NON_CACHEABLE, "wrong memory attribute");  in ZTEST()
206 	zassert_is_null(block, "allocated buffer too big for the region");  in ZTEST()
208 	/* Request a 0-sized block */  in ZTEST()
212 	/* Request a non-existent attribute */  in ZTEST()