xref: /dpdk/drivers/net/enetc/enetc_ethdev.c (revision f5057be340e44f3edc0fe90fa875eb89a4c49b4f)
1 /* SPDX-License-Identifier: BSD-3-Clause
2  * Copyright 2018-2020 NXP
3  */
4 
5 #include <stdbool.h>
6 #include <rte_ethdev_pci.h>
7 #include <rte_random.h>
8 #include <dpaax_iova_table.h>
9 
10 #include "enetc_logs.h"
11 #include "enetc.h"
12 
13 static int
14 enetc_dev_start(struct rte_eth_dev *dev)
15 {
16 	struct enetc_eth_hw *hw =
17 		ENETC_DEV_PRIVATE_TO_HW(dev->data->dev_private);
18 	struct enetc_hw *enetc_hw = &hw->hw;
19 	uint32_t val;
20 
21 	PMD_INIT_FUNC_TRACE();
22 	val = enetc_port_rd(enetc_hw, ENETC_PM0_CMD_CFG);
23 	enetc_port_wr(enetc_hw, ENETC_PM0_CMD_CFG,
24 		      val | ENETC_PM0_TX_EN | ENETC_PM0_RX_EN);
25 
26 	/* Enable port */
27 	val = enetc_port_rd(enetc_hw, ENETC_PMR);
28 	enetc_port_wr(enetc_hw, ENETC_PMR, val | ENETC_PMR_EN);
29 
30 	/* set auto-speed for RGMII */
31 	if (enetc_port_rd(enetc_hw, ENETC_PM0_IF_MODE) & ENETC_PMO_IFM_RG) {
32 		enetc_port_wr(enetc_hw, ENETC_PM0_IF_MODE,
33 			      ENETC_PM0_IFM_RGAUTO);
34 		enetc_port_wr(enetc_hw, ENETC_PM1_IF_MODE,
35 			      ENETC_PM0_IFM_RGAUTO);
36 	}
37 	if (enetc_global_rd(enetc_hw,
38 			    ENETC_G_EPFBLPR(1)) == ENETC_G_EPFBLPR1_XGMII) {
39 		enetc_port_wr(enetc_hw, ENETC_PM0_IF_MODE,
40 			      ENETC_PM0_IFM_XGMII);
41 		enetc_port_wr(enetc_hw, ENETC_PM1_IF_MODE,
42 			      ENETC_PM0_IFM_XGMII);
43 	}
44 
45 	return 0;
46 }
47 
48 static void
49 enetc_dev_stop(struct rte_eth_dev *dev)
50 {
51 	struct enetc_eth_hw *hw =
52 		ENETC_DEV_PRIVATE_TO_HW(dev->data->dev_private);
53 	struct enetc_hw *enetc_hw = &hw->hw;
54 	uint32_t val;
55 
56 	PMD_INIT_FUNC_TRACE();
57 	/* Disable port */
58 	val = enetc_port_rd(enetc_hw, ENETC_PMR);
59 	enetc_port_wr(enetc_hw, ENETC_PMR, val & (~ENETC_PMR_EN));
60 
61 	val = enetc_port_rd(enetc_hw, ENETC_PM0_CMD_CFG);
62 	enetc_port_wr(enetc_hw, ENETC_PM0_CMD_CFG,
63 		      val & (~(ENETC_PM0_TX_EN | ENETC_PM0_RX_EN)));
64 }
65 
66 static const uint32_t *
67 enetc_supported_ptypes_get(struct rte_eth_dev *dev __rte_unused)
68 {
69 	static const uint32_t ptypes[] = {
70 		RTE_PTYPE_L2_ETHER,
71 		RTE_PTYPE_L3_IPV4,
72 		RTE_PTYPE_L3_IPV6,
73 		RTE_PTYPE_L4_TCP,
74 		RTE_PTYPE_L4_UDP,
75 		RTE_PTYPE_L4_SCTP,
76 		RTE_PTYPE_L4_ICMP,
77 		RTE_PTYPE_UNKNOWN
78 	};
79 
80 	return ptypes;
81 }
82 
83 /* return 0 means link status changed, -1 means not changed */
84 static int
85 enetc_link_update(struct rte_eth_dev *dev, int wait_to_complete __rte_unused)
86 {
87 	struct enetc_eth_hw *hw =
88 		ENETC_DEV_PRIVATE_TO_HW(dev->data->dev_private);
89 	struct enetc_hw *enetc_hw = &hw->hw;
90 	struct rte_eth_link link;
91 	uint32_t status;
92 
93 	PMD_INIT_FUNC_TRACE();
94 
95 	memset(&link, 0, sizeof(link));
96 
97 	status = enetc_port_rd(enetc_hw, ENETC_PM0_STATUS);
98 
99 	if (status & ENETC_LINK_MODE)
100 		link.link_duplex = ETH_LINK_FULL_DUPLEX;
101 	else
102 		link.link_duplex = ETH_LINK_HALF_DUPLEX;
103 
104 	if (status & ENETC_LINK_STATUS)
105 		link.link_status = ETH_LINK_UP;
106 	else
107 		link.link_status = ETH_LINK_DOWN;
108 
109 	switch (status & ENETC_LINK_SPEED_MASK) {
110 	case ENETC_LINK_SPEED_1G:
111 		link.link_speed = ETH_SPEED_NUM_1G;
112 		break;
113 
114 	case ENETC_LINK_SPEED_100M:
115 		link.link_speed = ETH_SPEED_NUM_100M;
116 		break;
117 
118 	default:
119 	case ENETC_LINK_SPEED_10M:
120 		link.link_speed = ETH_SPEED_NUM_10M;
121 	}
122 
123 	return rte_eth_linkstatus_set(dev, &link);
124 }
125 
126 static void
127 print_ethaddr(const char *name, const struct rte_ether_addr *eth_addr)
128 {
129 	char buf[RTE_ETHER_ADDR_FMT_SIZE];
130 
131 	rte_ether_format_addr(buf, RTE_ETHER_ADDR_FMT_SIZE, eth_addr);
132 	ENETC_PMD_NOTICE("%s%s\n", name, buf);
133 }
134 
135 static int
136 enetc_hardware_init(struct enetc_eth_hw *hw)
137 {
138 	struct enetc_hw *enetc_hw = &hw->hw;
139 	uint32_t *mac = (uint32_t *)hw->mac.addr;
140 	uint32_t high_mac = 0;
141 	uint16_t low_mac = 0;
142 
143 	PMD_INIT_FUNC_TRACE();
144 	/* Calculating and storing the base HW addresses */
145 	hw->hw.port = (void *)((size_t)hw->hw.reg + ENETC_PORT_BASE);
146 	hw->hw.global = (void *)((size_t)hw->hw.reg + ENETC_GLOBAL_BASE);
147 
148 	/* WA for Rx lock-up HW erratum */
149 	enetc_port_wr(enetc_hw, ENETC_PM0_RX_FIFO, 1);
150 
151 	/* set ENETC transaction flags to coherent, don't allocate.
152 	 * BD writes merge with surrounding cache line data, frame data writes
153 	 * overwrite cache line.
154 	 */
155 	enetc_wr(enetc_hw, ENETC_SICAR0, ENETC_SICAR0_COHERENT);
156 
157 	/* Enabling Station Interface */
158 	enetc_wr(enetc_hw, ENETC_SIMR, ENETC_SIMR_EN);
159 
160 	*mac = (uint32_t)enetc_port_rd(enetc_hw, ENETC_PSIPMAR0(0));
161 	high_mac = (uint32_t)*mac;
162 	mac++;
163 	*mac = (uint16_t)enetc_port_rd(enetc_hw, ENETC_PSIPMAR1(0));
164 	low_mac = (uint16_t)*mac;
165 
166 	if ((high_mac | low_mac) == 0) {
167 		char *first_byte;
168 
169 		ENETC_PMD_NOTICE("MAC is not available for this SI, "
170 				"set random MAC\n");
171 		mac = (uint32_t *)hw->mac.addr;
172 		*mac = (uint32_t)rte_rand();
173 		first_byte = (char *)mac;
174 		*first_byte &= 0xfe;	/* clear multicast bit */
175 		*first_byte |= 0x02;	/* set local assignment bit (IEEE802) */
176 
177 		enetc_port_wr(enetc_hw, ENETC_PSIPMAR0(0), *mac);
178 		mac++;
179 		*mac = (uint16_t)rte_rand();
180 		enetc_port_wr(enetc_hw, ENETC_PSIPMAR1(0), *mac);
181 		print_ethaddr("New address: ",
182 			      (const struct rte_ether_addr *)hw->mac.addr);
183 	}
184 
185 	return 0;
186 }
187 
188 static int
189 enetc_dev_infos_get(struct rte_eth_dev *dev __rte_unused,
190 		    struct rte_eth_dev_info *dev_info)
191 {
192 	PMD_INIT_FUNC_TRACE();
193 	dev_info->rx_desc_lim = (struct rte_eth_desc_lim) {
194 		.nb_max = MAX_BD_COUNT,
195 		.nb_min = MIN_BD_COUNT,
196 		.nb_align = BD_ALIGN,
197 	};
198 	dev_info->tx_desc_lim = (struct rte_eth_desc_lim) {
199 		.nb_max = MAX_BD_COUNT,
200 		.nb_min = MIN_BD_COUNT,
201 		.nb_align = BD_ALIGN,
202 	};
203 	dev_info->max_rx_queues = MAX_RX_RINGS;
204 	dev_info->max_tx_queues = MAX_TX_RINGS;
205 	dev_info->max_rx_pktlen = ENETC_MAC_MAXFRM_SIZE;
206 	dev_info->rx_offload_capa =
207 		(DEV_RX_OFFLOAD_IPV4_CKSUM |
208 		 DEV_RX_OFFLOAD_UDP_CKSUM |
209 		 DEV_RX_OFFLOAD_TCP_CKSUM |
210 		 DEV_RX_OFFLOAD_KEEP_CRC |
211 		 DEV_RX_OFFLOAD_JUMBO_FRAME);
212 
213 	return 0;
214 }
215 
216 static int
217 enetc_alloc_txbdr(struct enetc_bdr *txr, uint16_t nb_desc)
218 {
219 	int size;
220 
221 	size = nb_desc * sizeof(struct enetc_swbd);
222 	txr->q_swbd = rte_malloc(NULL, size, ENETC_BD_RING_ALIGN);
223 	if (txr->q_swbd == NULL)
224 		return -ENOMEM;
225 
226 	size = nb_desc * sizeof(struct enetc_tx_bd);
227 	txr->bd_base = rte_malloc(NULL, size, ENETC_BD_RING_ALIGN);
228 	if (txr->bd_base == NULL) {
229 		rte_free(txr->q_swbd);
230 		txr->q_swbd = NULL;
231 		return -ENOMEM;
232 	}
233 
234 	txr->bd_count = nb_desc;
235 	txr->next_to_clean = 0;
236 	txr->next_to_use = 0;
237 
238 	return 0;
239 }
240 
241 static void
242 enetc_free_bdr(struct enetc_bdr *rxr)
243 {
244 	rte_free(rxr->q_swbd);
245 	rte_free(rxr->bd_base);
246 	rxr->q_swbd = NULL;
247 	rxr->bd_base = NULL;
248 }
249 
250 static void
251 enetc_setup_txbdr(struct enetc_hw *hw, struct enetc_bdr *tx_ring)
252 {
253 	int idx = tx_ring->index;
254 	phys_addr_t bd_address;
255 
256 	bd_address = (phys_addr_t)
257 		     rte_mem_virt2iova((const void *)tx_ring->bd_base);
258 	enetc_txbdr_wr(hw, idx, ENETC_TBBAR0,
259 		       lower_32_bits((uint64_t)bd_address));
260 	enetc_txbdr_wr(hw, idx, ENETC_TBBAR1,
261 		       upper_32_bits((uint64_t)bd_address));
262 	enetc_txbdr_wr(hw, idx, ENETC_TBLENR,
263 		       ENETC_RTBLENR_LEN(tx_ring->bd_count));
264 
265 	enetc_txbdr_wr(hw, idx, ENETC_TBCIR, 0);
266 	enetc_txbdr_wr(hw, idx, ENETC_TBCISR, 0);
267 	tx_ring->tcir = (void *)((size_t)hw->reg +
268 			ENETC_BDR(TX, idx, ENETC_TBCIR));
269 	tx_ring->tcisr = (void *)((size_t)hw->reg +
270 			 ENETC_BDR(TX, idx, ENETC_TBCISR));
271 }
272 
273 static int
274 enetc_tx_queue_setup(struct rte_eth_dev *dev,
275 		     uint16_t queue_idx,
276 		     uint16_t nb_desc,
277 		     unsigned int socket_id __rte_unused,
278 		     const struct rte_eth_txconf *tx_conf)
279 {
280 	int err = 0;
281 	struct enetc_bdr *tx_ring;
282 	struct rte_eth_dev_data *data = dev->data;
283 	struct enetc_eth_adapter *priv =
284 			ENETC_DEV_PRIVATE(data->dev_private);
285 
286 	PMD_INIT_FUNC_TRACE();
287 	if (nb_desc > MAX_BD_COUNT)
288 		return -1;
289 
290 	tx_ring = rte_zmalloc(NULL, sizeof(struct enetc_bdr), 0);
291 	if (tx_ring == NULL) {
292 		ENETC_PMD_ERR("Failed to allocate TX ring memory");
293 		err = -ENOMEM;
294 		return -1;
295 	}
296 
297 	err = enetc_alloc_txbdr(tx_ring, nb_desc);
298 	if (err)
299 		goto fail;
300 
301 	tx_ring->index = queue_idx;
302 	tx_ring->ndev = dev;
303 	enetc_setup_txbdr(&priv->hw.hw, tx_ring);
304 	data->tx_queues[queue_idx] = tx_ring;
305 
306 	if (!tx_conf->tx_deferred_start) {
307 		/* enable ring */
308 		enetc_txbdr_wr(&priv->hw.hw, tx_ring->index,
309 			       ENETC_TBMR, ENETC_TBMR_EN);
310 		dev->data->tx_queue_state[tx_ring->index] =
311 			       RTE_ETH_QUEUE_STATE_STARTED;
312 	} else {
313 		dev->data->tx_queue_state[tx_ring->index] =
314 			       RTE_ETH_QUEUE_STATE_STOPPED;
315 	}
316 
317 	return 0;
318 fail:
319 	rte_free(tx_ring);
320 
321 	return err;
322 }
323 
324 static void
325 enetc_tx_queue_release(void *txq)
326 {
327 	if (txq == NULL)
328 		return;
329 
330 	struct enetc_bdr *tx_ring = (struct enetc_bdr *)txq;
331 	struct enetc_eth_hw *eth_hw =
332 		ENETC_DEV_PRIVATE_TO_HW(tx_ring->ndev->data->dev_private);
333 	struct enetc_hw *hw;
334 	struct enetc_swbd *tx_swbd;
335 	int i;
336 	uint32_t val;
337 
338 	/* Disable the ring */
339 	hw = &eth_hw->hw;
340 	val = enetc_txbdr_rd(hw, tx_ring->index, ENETC_TBMR);
341 	val &= (~ENETC_TBMR_EN);
342 	enetc_txbdr_wr(hw, tx_ring->index, ENETC_TBMR, val);
343 
344 	/* clean the ring*/
345 	i = tx_ring->next_to_clean;
346 	tx_swbd = &tx_ring->q_swbd[i];
347 	while (tx_swbd->buffer_addr != NULL) {
348 		rte_pktmbuf_free(tx_swbd->buffer_addr);
349 		tx_swbd->buffer_addr = NULL;
350 		tx_swbd++;
351 		i++;
352 		if (unlikely(i == tx_ring->bd_count)) {
353 			i = 0;
354 			tx_swbd = &tx_ring->q_swbd[i];
355 		}
356 	}
357 
358 	enetc_free_bdr(tx_ring);
359 	rte_free(tx_ring);
360 }
361 
362 static int
363 enetc_alloc_rxbdr(struct enetc_bdr *rxr,
364 		  uint16_t nb_rx_desc)
365 {
366 	int size;
367 
368 	size = nb_rx_desc * sizeof(struct enetc_swbd);
369 	rxr->q_swbd = rte_malloc(NULL, size, ENETC_BD_RING_ALIGN);
370 	if (rxr->q_swbd == NULL)
371 		return -ENOMEM;
372 
373 	size = nb_rx_desc * sizeof(union enetc_rx_bd);
374 	rxr->bd_base = rte_malloc(NULL, size, ENETC_BD_RING_ALIGN);
375 	if (rxr->bd_base == NULL) {
376 		rte_free(rxr->q_swbd);
377 		rxr->q_swbd = NULL;
378 		return -ENOMEM;
379 	}
380 
381 	rxr->bd_count = nb_rx_desc;
382 	rxr->next_to_clean = 0;
383 	rxr->next_to_use = 0;
384 	rxr->next_to_alloc = 0;
385 
386 	return 0;
387 }
388 
389 static void
390 enetc_setup_rxbdr(struct enetc_hw *hw, struct enetc_bdr *rx_ring,
391 		  struct rte_mempool *mb_pool)
392 {
393 	int idx = rx_ring->index;
394 	uint16_t buf_size;
395 	phys_addr_t bd_address;
396 
397 	bd_address = (phys_addr_t)
398 		     rte_mem_virt2iova((const void *)rx_ring->bd_base);
399 	enetc_rxbdr_wr(hw, idx, ENETC_RBBAR0,
400 		       lower_32_bits((uint64_t)bd_address));
401 	enetc_rxbdr_wr(hw, idx, ENETC_RBBAR1,
402 		       upper_32_bits((uint64_t)bd_address));
403 	enetc_rxbdr_wr(hw, idx, ENETC_RBLENR,
404 		       ENETC_RTBLENR_LEN(rx_ring->bd_count));
405 
406 	rx_ring->mb_pool = mb_pool;
407 	rx_ring->rcir = (void *)((size_t)hw->reg +
408 			ENETC_BDR(RX, idx, ENETC_RBCIR));
409 	enetc_refill_rx_ring(rx_ring, (enetc_bd_unused(rx_ring)));
410 	buf_size = (uint16_t)(rte_pktmbuf_data_room_size(rx_ring->mb_pool) -
411 		   RTE_PKTMBUF_HEADROOM);
412 	enetc_rxbdr_wr(hw, idx, ENETC_RBBSR, buf_size);
413 	enetc_rxbdr_wr(hw, idx, ENETC_RBPIR, 0);
414 }
415 
416 static int
417 enetc_rx_queue_setup(struct rte_eth_dev *dev,
418 		     uint16_t rx_queue_id,
419 		     uint16_t nb_rx_desc,
420 		     unsigned int socket_id __rte_unused,
421 		     const struct rte_eth_rxconf *rx_conf,
422 		     struct rte_mempool *mb_pool)
423 {
424 	int err = 0;
425 	struct enetc_bdr *rx_ring;
426 	struct rte_eth_dev_data *data =  dev->data;
427 	struct enetc_eth_adapter *adapter =
428 			ENETC_DEV_PRIVATE(data->dev_private);
429 	uint64_t rx_offloads = data->dev_conf.rxmode.offloads;
430 
431 	PMD_INIT_FUNC_TRACE();
432 	if (nb_rx_desc > MAX_BD_COUNT)
433 		return -1;
434 
435 	rx_ring = rte_zmalloc(NULL, sizeof(struct enetc_bdr), 0);
436 	if (rx_ring == NULL) {
437 		ENETC_PMD_ERR("Failed to allocate RX ring memory");
438 		err = -ENOMEM;
439 		return err;
440 	}
441 
442 	err = enetc_alloc_rxbdr(rx_ring, nb_rx_desc);
443 	if (err)
444 		goto fail;
445 
446 	rx_ring->index = rx_queue_id;
447 	rx_ring->ndev = dev;
448 	enetc_setup_rxbdr(&adapter->hw.hw, rx_ring, mb_pool);
449 	data->rx_queues[rx_queue_id] = rx_ring;
450 
451 	if (!rx_conf->rx_deferred_start) {
452 		/* enable ring */
453 		enetc_rxbdr_wr(&adapter->hw.hw, rx_ring->index, ENETC_RBMR,
454 			       ENETC_RBMR_EN);
455 		dev->data->rx_queue_state[rx_ring->index] =
456 			       RTE_ETH_QUEUE_STATE_STARTED;
457 	} else {
458 		dev->data->rx_queue_state[rx_ring->index] =
459 			       RTE_ETH_QUEUE_STATE_STOPPED;
460 	}
461 
462 	rx_ring->crc_len = (uint8_t)((rx_offloads & DEV_RX_OFFLOAD_KEEP_CRC) ?
463 				     RTE_ETHER_CRC_LEN : 0);
464 
465 	return 0;
466 fail:
467 	rte_free(rx_ring);
468 
469 	return err;
470 }
471 
472 static void
473 enetc_rx_queue_release(void *rxq)
474 {
475 	if (rxq == NULL)
476 		return;
477 
478 	struct enetc_bdr *rx_ring = (struct enetc_bdr *)rxq;
479 	struct enetc_eth_hw *eth_hw =
480 		ENETC_DEV_PRIVATE_TO_HW(rx_ring->ndev->data->dev_private);
481 	struct enetc_swbd *q_swbd;
482 	struct enetc_hw *hw;
483 	uint32_t val;
484 	int i;
485 
486 	/* Disable the ring */
487 	hw = &eth_hw->hw;
488 	val = enetc_rxbdr_rd(hw, rx_ring->index, ENETC_RBMR);
489 	val &= (~ENETC_RBMR_EN);
490 	enetc_rxbdr_wr(hw, rx_ring->index, ENETC_RBMR, val);
491 
492 	/* Clean the ring */
493 	i = rx_ring->next_to_clean;
494 	q_swbd = &rx_ring->q_swbd[i];
495 	while (i != rx_ring->next_to_use) {
496 		rte_pktmbuf_free(q_swbd->buffer_addr);
497 		q_swbd->buffer_addr = NULL;
498 		q_swbd++;
499 		i++;
500 		if (unlikely(i == rx_ring->bd_count)) {
501 			i = 0;
502 			q_swbd = &rx_ring->q_swbd[i];
503 		}
504 	}
505 
506 	enetc_free_bdr(rx_ring);
507 	rte_free(rx_ring);
508 }
509 
510 static
511 int enetc_stats_get(struct rte_eth_dev *dev,
512 		    struct rte_eth_stats *stats)
513 {
514 	struct enetc_eth_hw *hw =
515 		ENETC_DEV_PRIVATE_TO_HW(dev->data->dev_private);
516 	struct enetc_hw *enetc_hw = &hw->hw;
517 
518 	/* Total received packets, bad + good, if we want to get counters of
519 	 * only good received packets then use ENETC_PM0_RFRM,
520 	 * ENETC_PM0_TFRM registers.
521 	 */
522 	stats->ipackets = enetc_port_rd(enetc_hw, ENETC_PM0_RPKT);
523 	stats->opackets = enetc_port_rd(enetc_hw, ENETC_PM0_TPKT);
524 	stats->ibytes =  enetc_port_rd(enetc_hw, ENETC_PM0_REOCT);
525 	stats->obytes = enetc_port_rd(enetc_hw, ENETC_PM0_TEOCT);
526 	/* Dropped + Truncated packets, use ENETC_PM0_RDRNTP for without
527 	 * truncated packets
528 	 */
529 	stats->imissed = enetc_port_rd(enetc_hw, ENETC_PM0_RDRP);
530 	stats->ierrors = enetc_port_rd(enetc_hw, ENETC_PM0_RERR);
531 	stats->oerrors = enetc_port_rd(enetc_hw, ENETC_PM0_TERR);
532 
533 	return 0;
534 }
535 
536 static int
537 enetc_stats_reset(struct rte_eth_dev *dev)
538 {
539 	struct enetc_eth_hw *hw =
540 		ENETC_DEV_PRIVATE_TO_HW(dev->data->dev_private);
541 	struct enetc_hw *enetc_hw = &hw->hw;
542 
543 	enetc_port_wr(enetc_hw, ENETC_PM0_STAT_CONFIG, ENETC_CLEAR_STATS);
544 
545 	return 0;
546 }
547 
548 static int
549 enetc_dev_close(struct rte_eth_dev *dev)
550 {
551 	uint16_t i;
552 
553 	PMD_INIT_FUNC_TRACE();
554 	if (rte_eal_process_type() != RTE_PROC_PRIMARY)
555 		return 0;
556 
557 	enetc_dev_stop(dev);
558 
559 	for (i = 0; i < dev->data->nb_rx_queues; i++) {
560 		enetc_rx_queue_release(dev->data->rx_queues[i]);
561 		dev->data->rx_queues[i] = NULL;
562 	}
563 	dev->data->nb_rx_queues = 0;
564 
565 	for (i = 0; i < dev->data->nb_tx_queues; i++) {
566 		enetc_tx_queue_release(dev->data->tx_queues[i]);
567 		dev->data->tx_queues[i] = NULL;
568 	}
569 	dev->data->nb_tx_queues = 0;
570 
571 	if (rte_eal_iova_mode() == RTE_IOVA_PA)
572 		dpaax_iova_table_depopulate();
573 
574 	return 0;
575 }
576 
577 static int
578 enetc_promiscuous_enable(struct rte_eth_dev *dev)
579 {
580 	struct enetc_eth_hw *hw =
581 		ENETC_DEV_PRIVATE_TO_HW(dev->data->dev_private);
582 	struct enetc_hw *enetc_hw = &hw->hw;
583 	uint32_t psipmr = 0;
584 
585 	psipmr = enetc_port_rd(enetc_hw, ENETC_PSIPMR);
586 
587 	/* Setting to enable promiscuous mode*/
588 	psipmr |= ENETC_PSIPMR_SET_UP(0) | ENETC_PSIPMR_SET_MP(0);
589 
590 	enetc_port_wr(enetc_hw, ENETC_PSIPMR, psipmr);
591 
592 	return 0;
593 }
594 
595 static int
596 enetc_promiscuous_disable(struct rte_eth_dev *dev)
597 {
598 	struct enetc_eth_hw *hw =
599 		ENETC_DEV_PRIVATE_TO_HW(dev->data->dev_private);
600 	struct enetc_hw *enetc_hw = &hw->hw;
601 	uint32_t psipmr = 0;
602 
603 	/* Setting to disable promiscuous mode for SI0*/
604 	psipmr = enetc_port_rd(enetc_hw, ENETC_PSIPMR);
605 	psipmr &= (~ENETC_PSIPMR_SET_UP(0));
606 
607 	if (dev->data->all_multicast == 0)
608 		psipmr &= (~ENETC_PSIPMR_SET_MP(0));
609 
610 	enetc_port_wr(enetc_hw, ENETC_PSIPMR, psipmr);
611 
612 	return 0;
613 }
614 
615 static int
616 enetc_allmulticast_enable(struct rte_eth_dev *dev)
617 {
618 	struct enetc_eth_hw *hw =
619 		ENETC_DEV_PRIVATE_TO_HW(dev->data->dev_private);
620 	struct enetc_hw *enetc_hw = &hw->hw;
621 	uint32_t psipmr = 0;
622 
623 	psipmr = enetc_port_rd(enetc_hw, ENETC_PSIPMR);
624 
625 	/* Setting to enable allmulticast mode for SI0*/
626 	psipmr |= ENETC_PSIPMR_SET_MP(0);
627 
628 	enetc_port_wr(enetc_hw, ENETC_PSIPMR, psipmr);
629 
630 	return 0;
631 }
632 
633 static int
634 enetc_allmulticast_disable(struct rte_eth_dev *dev)
635 {
636 	struct enetc_eth_hw *hw =
637 		ENETC_DEV_PRIVATE_TO_HW(dev->data->dev_private);
638 	struct enetc_hw *enetc_hw = &hw->hw;
639 	uint32_t psipmr = 0;
640 
641 	if (dev->data->promiscuous == 1)
642 		return 0; /* must remain in all_multicast mode */
643 
644 	/* Setting to disable all multicast mode for SI0*/
645 	psipmr = enetc_port_rd(enetc_hw, ENETC_PSIPMR) &
646 			       ~(ENETC_PSIPMR_SET_MP(0));
647 
648 	enetc_port_wr(enetc_hw, ENETC_PSIPMR, psipmr);
649 
650 	return 0;
651 }
652 
653 static int
654 enetc_mtu_set(struct rte_eth_dev *dev, uint16_t mtu)
655 {
656 	struct enetc_eth_hw *hw =
657 		ENETC_DEV_PRIVATE_TO_HW(dev->data->dev_private);
658 	struct enetc_hw *enetc_hw = &hw->hw;
659 	uint32_t frame_size = mtu + RTE_ETHER_HDR_LEN + RTE_ETHER_CRC_LEN;
660 
661 	/* check that mtu is within the allowed range */
662 	if (mtu < ENETC_MAC_MINFRM_SIZE || frame_size > ENETC_MAC_MAXFRM_SIZE)
663 		return -EINVAL;
664 
665 	/*
666 	 * Refuse mtu that requires the support of scattered packets
667 	 * when this feature has not been enabled before.
668 	 */
669 	if (dev->data->min_rx_buf_size &&
670 		!dev->data->scattered_rx && frame_size >
671 		dev->data->min_rx_buf_size - RTE_PKTMBUF_HEADROOM) {
672 		ENETC_PMD_ERR("SG not enabled, will not fit in one buffer");
673 		return -EINVAL;
674 	}
675 
676 	if (frame_size > RTE_ETHER_MAX_LEN)
677 		dev->data->dev_conf.rxmode.offloads &=
678 						DEV_RX_OFFLOAD_JUMBO_FRAME;
679 	else
680 		dev->data->dev_conf.rxmode.offloads &=
681 						~DEV_RX_OFFLOAD_JUMBO_FRAME;
682 
683 	enetc_port_wr(enetc_hw, ENETC_PTCMSDUR(0), ENETC_MAC_MAXFRM_SIZE);
684 	enetc_port_wr(enetc_hw, ENETC_PTXMBAR, 2 * ENETC_MAC_MAXFRM_SIZE);
685 
686 	dev->data->dev_conf.rxmode.max_rx_pkt_len = frame_size;
687 
688 	/*setting the MTU*/
689 	enetc_port_wr(enetc_hw, ENETC_PM0_MAXFRM, ENETC_SET_MAXFRM(frame_size) |
690 		      ENETC_SET_TX_MTU(ENETC_MAC_MAXFRM_SIZE));
691 
692 	return 0;
693 }
694 
695 static int
696 enetc_dev_configure(struct rte_eth_dev *dev)
697 {
698 	struct enetc_eth_hw *hw =
699 		ENETC_DEV_PRIVATE_TO_HW(dev->data->dev_private);
700 	struct enetc_hw *enetc_hw = &hw->hw;
701 	struct rte_eth_conf *eth_conf = &dev->data->dev_conf;
702 	uint64_t rx_offloads = eth_conf->rxmode.offloads;
703 	uint32_t checksum = L3_CKSUM | L4_CKSUM;
704 
705 	PMD_INIT_FUNC_TRACE();
706 
707 	if (rx_offloads & DEV_RX_OFFLOAD_JUMBO_FRAME) {
708 		uint32_t max_len;
709 
710 		max_len = dev->data->dev_conf.rxmode.max_rx_pkt_len;
711 
712 		enetc_port_wr(enetc_hw, ENETC_PM0_MAXFRM,
713 			      ENETC_SET_MAXFRM(max_len));
714 		enetc_port_wr(enetc_hw, ENETC_PTCMSDUR(0),
715 			      ENETC_MAC_MAXFRM_SIZE);
716 		enetc_port_wr(enetc_hw, ENETC_PTXMBAR,
717 			      2 * ENETC_MAC_MAXFRM_SIZE);
718 		dev->data->mtu = RTE_ETHER_MAX_LEN - RTE_ETHER_HDR_LEN -
719 			RTE_ETHER_CRC_LEN;
720 	}
721 
722 	if (rx_offloads & DEV_RX_OFFLOAD_KEEP_CRC) {
723 		int config;
724 
725 		config = enetc_port_rd(enetc_hw, ENETC_PM0_CMD_CFG);
726 		config |= ENETC_PM0_CRC;
727 		enetc_port_wr(enetc_hw, ENETC_PM0_CMD_CFG, config);
728 	}
729 
730 	if (rx_offloads & DEV_RX_OFFLOAD_IPV4_CKSUM)
731 		checksum &= ~L3_CKSUM;
732 
733 	if (rx_offloads & (DEV_RX_OFFLOAD_UDP_CKSUM | DEV_RX_OFFLOAD_TCP_CKSUM))
734 		checksum &= ~L4_CKSUM;
735 
736 	enetc_port_wr(enetc_hw, ENETC_PAR_PORT_CFG, checksum);
737 
738 
739 	return 0;
740 }
741 
742 static int
743 enetc_rx_queue_start(struct rte_eth_dev *dev, uint16_t qidx)
744 {
745 	struct enetc_eth_adapter *priv =
746 			ENETC_DEV_PRIVATE(dev->data->dev_private);
747 	struct enetc_bdr *rx_ring;
748 	uint32_t rx_data;
749 
750 	rx_ring = dev->data->rx_queues[qidx];
751 	if (dev->data->rx_queue_state[qidx] == RTE_ETH_QUEUE_STATE_STOPPED) {
752 		rx_data = enetc_rxbdr_rd(&priv->hw.hw, rx_ring->index,
753 					 ENETC_RBMR);
754 		rx_data = rx_data | ENETC_RBMR_EN;
755 		enetc_rxbdr_wr(&priv->hw.hw, rx_ring->index, ENETC_RBMR,
756 			       rx_data);
757 		dev->data->rx_queue_state[qidx] = RTE_ETH_QUEUE_STATE_STARTED;
758 	}
759 
760 	return 0;
761 }
762 
763 static int
764 enetc_rx_queue_stop(struct rte_eth_dev *dev, uint16_t qidx)
765 {
766 	struct enetc_eth_adapter *priv =
767 			ENETC_DEV_PRIVATE(dev->data->dev_private);
768 	struct enetc_bdr *rx_ring;
769 	uint32_t rx_data;
770 
771 	rx_ring = dev->data->rx_queues[qidx];
772 	if (dev->data->rx_queue_state[qidx] == RTE_ETH_QUEUE_STATE_STARTED) {
773 		rx_data = enetc_rxbdr_rd(&priv->hw.hw, rx_ring->index,
774 					 ENETC_RBMR);
775 		rx_data = rx_data & (~ENETC_RBMR_EN);
776 		enetc_rxbdr_wr(&priv->hw.hw, rx_ring->index, ENETC_RBMR,
777 			       rx_data);
778 		dev->data->rx_queue_state[qidx] = RTE_ETH_QUEUE_STATE_STOPPED;
779 	}
780 
781 	return 0;
782 }
783 
784 static int
785 enetc_tx_queue_start(struct rte_eth_dev *dev, uint16_t qidx)
786 {
787 	struct enetc_eth_adapter *priv =
788 			ENETC_DEV_PRIVATE(dev->data->dev_private);
789 	struct enetc_bdr *tx_ring;
790 	uint32_t tx_data;
791 
792 	tx_ring = dev->data->tx_queues[qidx];
793 	if (dev->data->tx_queue_state[qidx] == RTE_ETH_QUEUE_STATE_STOPPED) {
794 		tx_data = enetc_txbdr_rd(&priv->hw.hw, tx_ring->index,
795 					 ENETC_TBMR);
796 		tx_data = tx_data | ENETC_TBMR_EN;
797 		enetc_txbdr_wr(&priv->hw.hw, tx_ring->index, ENETC_TBMR,
798 			       tx_data);
799 		dev->data->tx_queue_state[qidx] = RTE_ETH_QUEUE_STATE_STARTED;
800 	}
801 
802 	return 0;
803 }
804 
805 static int
806 enetc_tx_queue_stop(struct rte_eth_dev *dev, uint16_t qidx)
807 {
808 	struct enetc_eth_adapter *priv =
809 			ENETC_DEV_PRIVATE(dev->data->dev_private);
810 	struct enetc_bdr *tx_ring;
811 	uint32_t tx_data;
812 
813 	tx_ring = dev->data->tx_queues[qidx];
814 	if (dev->data->tx_queue_state[qidx] == RTE_ETH_QUEUE_STATE_STARTED) {
815 		tx_data = enetc_txbdr_rd(&priv->hw.hw, tx_ring->index,
816 					 ENETC_TBMR);
817 		tx_data = tx_data & (~ENETC_TBMR_EN);
818 		enetc_txbdr_wr(&priv->hw.hw, tx_ring->index, ENETC_TBMR,
819 			       tx_data);
820 		dev->data->tx_queue_state[qidx] = RTE_ETH_QUEUE_STATE_STOPPED;
821 	}
822 
823 	return 0;
824 }
825 
826 /*
827  * The set of PCI devices this driver supports
828  */
829 static const struct rte_pci_id pci_id_enetc_map[] = {
830 	{ RTE_PCI_DEVICE(PCI_VENDOR_ID_FREESCALE, ENETC_DEV_ID) },
831 	{ RTE_PCI_DEVICE(PCI_VENDOR_ID_FREESCALE, ENETC_DEV_ID_VF) },
832 	{ .vendor_id = 0, /* sentinel */ },
833 };
834 
835 /* Features supported by this driver */
836 static const struct eth_dev_ops enetc_ops = {
837 	.dev_configure        = enetc_dev_configure,
838 	.dev_start            = enetc_dev_start,
839 	.dev_stop             = enetc_dev_stop,
840 	.dev_close            = enetc_dev_close,
841 	.link_update          = enetc_link_update,
842 	.stats_get            = enetc_stats_get,
843 	.stats_reset          = enetc_stats_reset,
844 	.promiscuous_enable   = enetc_promiscuous_enable,
845 	.promiscuous_disable  = enetc_promiscuous_disable,
846 	.allmulticast_enable  = enetc_allmulticast_enable,
847 	.allmulticast_disable = enetc_allmulticast_disable,
848 	.dev_infos_get        = enetc_dev_infos_get,
849 	.mtu_set              = enetc_mtu_set,
850 	.rx_queue_setup       = enetc_rx_queue_setup,
851 	.rx_queue_start       = enetc_rx_queue_start,
852 	.rx_queue_stop        = enetc_rx_queue_stop,
853 	.rx_queue_release     = enetc_rx_queue_release,
854 	.tx_queue_setup       = enetc_tx_queue_setup,
855 	.tx_queue_start       = enetc_tx_queue_start,
856 	.tx_queue_stop        = enetc_tx_queue_stop,
857 	.tx_queue_release     = enetc_tx_queue_release,
858 	.dev_supported_ptypes_get = enetc_supported_ptypes_get,
859 };
860 
861 /**
862  * Initialisation of the enetc device
863  *
864  * @param eth_dev
865  *   - Pointer to the structure rte_eth_dev
866  *
867  * @return
868  *   - On success, zero.
869  *   - On failure, negative value.
870  */
871 static int
872 enetc_dev_init(struct rte_eth_dev *eth_dev)
873 {
874 	int error = 0;
875 	struct rte_pci_device *pci_dev = RTE_ETH_DEV_TO_PCI(eth_dev);
876 	struct enetc_eth_hw *hw =
877 		ENETC_DEV_PRIVATE_TO_HW(eth_dev->data->dev_private);
878 
879 	PMD_INIT_FUNC_TRACE();
880 	eth_dev->dev_ops = &enetc_ops;
881 	eth_dev->rx_pkt_burst = &enetc_recv_pkts;
882 	eth_dev->tx_pkt_burst = &enetc_xmit_pkts;
883 
884 	/* Retrieving and storing the HW base address of device */
885 	hw->hw.reg = (void *)pci_dev->mem_resource[0].addr;
886 	hw->device_id = pci_dev->id.device_id;
887 
888 	error = enetc_hardware_init(hw);
889 	if (error != 0) {
890 		ENETC_PMD_ERR("Hardware initialization failed");
891 		return -1;
892 	}
893 
894 	/* Allocate memory for storing MAC addresses */
895 	eth_dev->data->mac_addrs = rte_zmalloc("enetc_eth",
896 					RTE_ETHER_ADDR_LEN, 0);
897 	if (!eth_dev->data->mac_addrs) {
898 		ENETC_PMD_ERR("Failed to allocate %d bytes needed to "
899 			      "store MAC addresses",
900 			      RTE_ETHER_ADDR_LEN * 1);
901 		error = -ENOMEM;
902 		return -1;
903 	}
904 
905 	/* Copy the permanent MAC address */
906 	rte_ether_addr_copy((struct rte_ether_addr *)hw->mac.addr,
907 			&eth_dev->data->mac_addrs[0]);
908 
909 	/* Set MTU */
910 	enetc_port_wr(&hw->hw, ENETC_PM0_MAXFRM,
911 		      ENETC_SET_MAXFRM(RTE_ETHER_MAX_LEN));
912 	eth_dev->data->mtu = RTE_ETHER_MAX_LEN - RTE_ETHER_HDR_LEN -
913 		RTE_ETHER_CRC_LEN;
914 
915 	if (rte_eal_iova_mode() == RTE_IOVA_PA)
916 		dpaax_iova_table_populate();
917 
918 	ENETC_PMD_DEBUG("port_id %d vendorID=0x%x deviceID=0x%x",
919 			eth_dev->data->port_id, pci_dev->id.vendor_id,
920 			pci_dev->id.device_id);
921 	return 0;
922 }
923 
924 static int
925 enetc_dev_uninit(struct rte_eth_dev *eth_dev)
926 {
927 	PMD_INIT_FUNC_TRACE();
928 
929 	return enetc_dev_close(eth_dev);
930 }
931 
932 static int
933 enetc_pci_probe(struct rte_pci_driver *pci_drv __rte_unused,
934 			   struct rte_pci_device *pci_dev)
935 {
936 	return rte_eth_dev_pci_generic_probe(pci_dev,
937 					     sizeof(struct enetc_eth_adapter),
938 					     enetc_dev_init);
939 }
940 
941 static int
942 enetc_pci_remove(struct rte_pci_device *pci_dev)
943 {
944 	return rte_eth_dev_pci_generic_remove(pci_dev, enetc_dev_uninit);
945 }
946 
947 static struct rte_pci_driver rte_enetc_pmd = {
948 	.id_table = pci_id_enetc_map,
949 	.drv_flags = RTE_PCI_DRV_NEED_MAPPING,
950 	.probe = enetc_pci_probe,
951 	.remove = enetc_pci_remove,
952 };
953 
954 RTE_PMD_REGISTER_PCI(net_enetc, rte_enetc_pmd);
955 RTE_PMD_REGISTER_PCI_TABLE(net_enetc, pci_id_enetc_map);
956 RTE_PMD_REGISTER_KMOD_DEP(net_enetc, "* vfio-pci");
957 RTE_LOG_REGISTER(enetc_logtype_pmd, pmd.net.enetc, NOTICE);
958