4  * SPDX-License-Identifier: Apache-2.0
13  * When IPv6 support enabled - the minimal size of network buffer
24 	const struct spi_buf_set tx = {	.buffers = &tx_buf, .count = 1 };  in oa_tc6_reg_read()  local
32 	 * When non-protected case - we need to decrase them  in oa_tc6_reg_read()
34 	if (!tc6->protected) {  in oa_tc6_reg_read()
35 		tx_buf.len -= sizeof(rvn);  in oa_tc6_reg_read()
36 		rx_buf.len -= sizeof(rvn);  in oa_tc6_reg_read()
49 	ret = spi_transceive_dt(tc6->spi, &tx, &rx);  in oa_tc6_reg_read()
58 		return -1;  in oa_tc6_reg_read()
63 	/* In protected mode read data is followed by its compliment value */  in oa_tc6_reg_read()
64 	if (tc6->protected) {  in oa_tc6_reg_read()
67 			LOG_ERR("Protected mode transmission error!");  in oa_tc6_reg_read()
68 			return -1;  in oa_tc6_reg_read()
82 	const struct spi_buf_set tx = {	.buffers = &tx_buf, .count = 1 };  in oa_tc6_reg_write()  local
90 	 * When non-protected case - we need to decrase them  in oa_tc6_reg_write()
92 	if (!tc6->protected) {  in oa_tc6_reg_write()
93 		tx_buf.len -= sizeof(rvn);  in oa_tc6_reg_write()
94 		rx_buf.len -= sizeof(rvn);  in oa_tc6_reg_write()
108 	if (tc6->protected) {  in oa_tc6_reg_write()
112 	ret = spi_transceive_dt(tc6->spi, &tx, &rx);  in oa_tc6_reg_write()
121 		return -1;  in oa_tc6_reg_write()
128 		return -1;  in oa_tc6_reg_write()
132 	 * In protected mode check if read value is followed by its  in oa_tc6_reg_write()
135 	if (tc6->protected) {  in oa_tc6_reg_write()
138 			LOG_ERR("Protected mode transmission error!");  in oa_tc6_reg_write()
139 			return -1;  in oa_tc6_reg_write()
174 	tc6->protected = prote;  in oa_tc6_set_protected_ctrl()
181 	uint8_t oa_tx[tc6->cps];  in oa_tc6_send_chunks()
187 		return -ENODATA;  in oa_tc6_send_chunks()
190 	chunks = len / tc6->cps;  in oa_tc6_send_chunks()
191 	if (len % tc6->cps) {  in oa_tc6_send_chunks()
196 	if (chunks > tc6->txc) {  in oa_tc6_send_chunks()
197 		return -EIO;  in oa_tc6_send_chunks()
212 			hdr |= FIELD_PREP(OA_DATA_HDR_EBO, len - 1) |  in oa_tc6_send_chunks()
218 		ret = net_pkt_read(pkt, oa_tx, len > tc6->cps ? tc6->cps : len);  in oa_tc6_send_chunks()
228 		len -= tc6->cps;  in oa_tc6_send_chunks()
238 	if (!tc6->sync) {  in oa_tc6_check_status()
239 		LOG_ERR("SYNC: Configuration lost, reset IC!");  in oa_tc6_check_status()
240 		return -EIO;  in oa_tc6_check_status()
243 	if (tc6->exst) {  in oa_tc6_check_status()
269 		return -EIO;  in oa_tc6_update_status()
272 	tc6->exst = FIELD_GET(OA_DATA_FTR_EXST, ftr);  in oa_tc6_update_status()
273 	tc6->sync = FIELD_GET(OA_DATA_FTR_SYNC, ftr);  in oa_tc6_update_status()
274 	tc6->rca = FIELD_GET(OA_DATA_FTR_RCA, ftr);  in oa_tc6_update_status()
275 	tc6->txc = FIELD_GET(OA_DATA_FTR_TXC, ftr);  in oa_tc6_update_status()
285 	struct spi_buf_set tx;  in oa_tc6_chunk_spi_transfer()  local
294 	tx_buf[1].len = tc6->cps;  in oa_tc6_chunk_spi_transfer()
296 	tx.buffers = tx_buf;  in oa_tc6_chunk_spi_transfer()
297 	tx.count = ARRAY_SIZE(tx_buf);  in oa_tc6_chunk_spi_transfer()
300 	rx_buf[0].len = tc6->cps;  in oa_tc6_chunk_spi_transfer()
308 	ret = spi_transceive_dt(tc6->spi, &tx, &rx);  in oa_tc6_chunk_spi_transfer()
339 	 * Special case - append already received data (extracted from previous  in oa_tc6_read_chunks()
343 	 * (ZAREFE) - so received ethernet frames will always start on the  in oa_tc6_read_chunks()
346 	if (tc6->concat_buf) {  in oa_tc6_read_chunks()
347 		net_pkt_append_buffer(pkt, tc6->concat_buf);  in oa_tc6_read_chunks()
348 		tc6->concat_buf = NULL;  in oa_tc6_read_chunks()
356 				return -ENOMEM;  in oa_tc6_read_chunks()
363 		ret = oa_tc6_chunk_spi_transfer(tc6, buf_rx->data + buf_rx_used, NULL, hdr, &ftr);  in oa_tc6_read_chunks()
369 		ret = -EIO;  in oa_tc6_read_chunks()
376 			LOG_ERR("OA RX: Configuration not SYNC'ed!");  in oa_tc6_read_chunks()
403 			 * Check if received frame shall be dropped - i.e. MAC has  in oa_tc6_read_chunks()
408 				ret = -EIO;  in oa_tc6_read_chunks()
413 			 * Concatenation of frames in a single chunk - one frame ends  in oa_tc6_read_chunks()
417 				tc6->concat_buf = net_buf_clone(buf_rx, OA_TC6_BUF_ALLOC_TIMEOUT);  in oa_tc6_read_chunks()
418 				if (!tc6->concat_buf) {  in oa_tc6_read_chunks()
420 					ret = -ENOMEM;  in oa_tc6_read_chunks()
423 				net_buf_pull(tc6->concat_buf, sbo);  in oa_tc6_read_chunks()
428 			buf_rx->len = buf_rx_used;  in oa_tc6_read_chunks()
436 			buf_rx_used += tc6->cps;  in oa_tc6_read_chunks()
437 			if ((buf_rx_size - buf_rx_used) < tc6->cps) {  in oa_tc6_read_chunks()
439 				buf_rx->len = buf_rx_used;  in oa_tc6_read_chunks()
444 	} while (tc6->rca > 0);  in oa_tc6_read_chunks()