55 static bool sam_flash_validate_offset_len(off_t offset, size_t len)  in sam_flash_validate_offset_len()  argument
57 	if (offset < 0) {  in sam_flash_validate_offset_len()
61 	if ((offset + len) < len) {  in sam_flash_validate_offset_len()
73 static bool sam_flash_offset_is_on_write_page_boundary(off_t offset)  in sam_flash_offset_is_on_write_page_boundary()  argument
75 	return sam_flash_aligned(offset, SAM_FLASH_WRITE_PAGE_SIZE);  in sam_flash_offset_is_on_write_page_boundary()
137 static bool sam_flash_section_is_within_area(const struct device *dev, off_t offset, size_t len)  in sam_flash_section_is_within_area()  argument
141 	if ((offset + ((off_t)len)) < offset) {  in sam_flash_section_is_within_area()
145 	if ((offset >= 0) && ((offset + len) <= config->area_size)) {  in sam_flash_section_is_within_area()
150 		(size_t)offset, (size_t)(offset + len), (size_t)config->area_size);  in sam_flash_section_is_within_area()
156 							       off_t offset, size_t len)  in sam_flash_section_is_aligned_with_write_block_size()  argument
160 	if (sam_flash_aligned(offset, config->parameters.write_block_size) &&  in sam_flash_section_is_aligned_with_write_block_size()
166 		(size_t)offset, (size_t)(offset + len), config->parameters.write_block_size);  in sam_flash_section_is_aligned_with_write_block_size()
171 static bool sam_flash_section_is_aligned_with_pages(const struct device *dev, off_t offset,  in sam_flash_section_is_aligned_with_pages()  argument
178 	if (flash_get_page_info_by_offs(dev, offset, &pages_info) < 0) {  in sam_flash_section_is_aligned_with_pages()
183 	if (offset != pages_info.start_offset) {  in sam_flash_section_is_aligned_with_pages()
188 	if ((offset + len) == (config->area_size)) {  in sam_flash_section_is_aligned_with_pages()
193 	if (flash_get_page_info_by_offs(dev, offset + len, &pages_info) < 0) {  in sam_flash_section_is_aligned_with_pages()
198 	if ((offset + len) != pages_info.start_offset) {  in sam_flash_section_is_aligned_with_pages()
205 static int sam_flash_read(const struct device *dev, off_t offset, void *data, size_t len)  in sam_flash_read()  argument
215 	if (!sam_flash_validate_offset_len(offset, len)) {  in sam_flash_read()
219 	if (!sam_flash_section_is_within_area(dev, offset, len)) {  in sam_flash_read()
224 	memcpy(data, (uint8_t *)(sam_config->area_address + offset), len);  in sam_flash_read()
229 static int sam_flash_write_latch_buffer_to_page(const struct device *dev, off_t offset)  in sam_flash_write_latch_buffer_to_page()  argument
233 	uint32_t page = offset / SAM_FLASH_WRITE_PAGE_SIZE;  in sam_flash_write_latch_buffer_to_page()
240 static int sam_flash_write_latch_buffer_to_previous_page(const struct device *dev, off_t offset)  in sam_flash_write_latch_buffer_to_previous_page()  argument
242 	return sam_flash_write_latch_buffer_to_page(dev, offset - SAM_FLASH_WRITE_PAGE_SIZE);  in sam_flash_write_latch_buffer_to_previous_page()
245 static void sam_flash_write_dword_to_latch_buffer(off_t offset, uint32_t dword)  in sam_flash_write_dword_to_latch_buffer()  argument
247 	*((uint32_t *)offset) = dword;  in sam_flash_write_dword_to_latch_buffer()
251 static int sam_flash_write_dwords_to_flash(const struct device *dev, off_t offset,  in sam_flash_write_dwords_to_flash()  argument
255 		sam_flash_write_dword_to_latch_buffer(offset, dwords[i]);  in sam_flash_write_dwords_to_flash()
256 		offset += sizeof(uint32_t);  in sam_flash_write_dwords_to_flash()
257 		if (sam_flash_offset_is_on_write_page_boundary(offset)) {  in sam_flash_write_dwords_to_flash()
258 			sam_flash_write_latch_buffer_to_previous_page(dev, offset);  in sam_flash_write_dwords_to_flash()
262 	if (!sam_flash_offset_is_on_write_page_boundary(offset)) {  in sam_flash_write_dwords_to_flash()
263 		sam_flash_write_latch_buffer_to_page(dev, offset);  in sam_flash_write_dwords_to_flash()
269 static int sam_flash_write(const struct device *dev, off_t offset, const void *data, size_t len)  in sam_flash_write()  argument
278 	if (!sam_flash_validate_offset_len(offset, len)) {  in sam_flash_write()
282 	if (!sam_flash_section_is_aligned_with_write_block_size(dev, offset, len)) {  in sam_flash_write()
286 	LOG_DBG("Writing sector from 0x%x to 0x%x", (size_t)offset, (size_t)(offset + len));  in sam_flash_write()
289 	if (sam_flash_write_dwords_to_flash(dev, offset, data, len / sizeof(uint32_t)) < 0) {  in sam_flash_write()
417 static int sam_flash_erase(const struct device *dev, off_t offset, size_t size)  in sam_flash_erase()  argument
426 	if (!sam_flash_validate_offset_len(offset, size)) {  in sam_flash_erase()
430 	if (!sam_flash_section_is_aligned_with_pages(dev, offset, size)) {  in sam_flash_erase()
434 	LOG_DBG("Erasing sector from 0x%x to 0x%x", (size_t)offset, (size_t)(offset + size));  in sam_flash_erase()
437 	sam_data->erase_data.section_start = offset;  in sam_flash_erase()
438 	sam_data->erase_data.section_end = offset + size;  in sam_flash_erase()