1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright(c) 2018 Advanced Micro Devices, Inc. All rights reserved.
3 * Copyright(c) 2018 Synopsys, Inc. All rights reserved.
6 #include "axgbe_ethdev.h"
7 #include "axgbe_rxtx.h"
11 #include <rte_mempool.h>
15 axgbe_rx_queue_release(struct axgbe_rx_queue *rx_queue)
18 struct rte_mbuf **sw_ring;
21 sw_ring = rx_queue->sw_ring;
23 for (i = 0; i < rx_queue->nb_desc; i++) {
25 rte_pktmbuf_free(sw_ring[i]);
33 void axgbe_dev_rx_queue_release(void *rxq)
35 axgbe_rx_queue_release(rxq);
38 int axgbe_dev_rx_queue_setup(struct rte_eth_dev *dev, uint16_t queue_idx,
39 uint16_t nb_desc, unsigned int socket_id,
40 const struct rte_eth_rxconf *rx_conf,
41 struct rte_mempool *mp)
43 PMD_INIT_FUNC_TRACE();
45 const struct rte_memzone *dma;
46 struct axgbe_rx_queue *rxq;
47 uint32_t rx_desc = nb_desc;
48 struct axgbe_port *pdata = dev->data->dev_private;
51 * validate Rx descriptors count
52 * should be power of 2 and less than h/w supported
54 if ((!rte_is_power_of_2(rx_desc)) ||
55 rx_desc > pdata->rx_desc_count)
57 /* First allocate the rx queue data structure */
58 rxq = rte_zmalloc_socket("ethdev RX queue",
59 sizeof(struct axgbe_rx_queue),
60 RTE_CACHE_LINE_SIZE, socket_id);
62 PMD_INIT_LOG(ERR, "rte_zmalloc for rxq failed!");
70 rxq->queue_id = queue_idx;
71 rxq->port_id = dev->data->port_id;
72 rxq->nb_desc = rx_desc;
73 rxq->dma_regs = (void *)((uint8_t *)pdata->xgmac_regs + DMA_CH_BASE +
74 (DMA_CH_INC * rxq->queue_id));
75 rxq->dma_tail_reg = (volatile uint32_t *)((uint8_t *)rxq->dma_regs +
77 if (dev->data->dev_conf.rxmode.offloads & DEV_RX_OFFLOAD_KEEP_CRC)
78 rxq->crc_len = RTE_ETHER_CRC_LEN;
82 /* CRC strip in AXGBE supports per port not per queue */
83 pdata->crc_strip_enable = (rxq->crc_len == 0) ? 1 : 0;
84 rxq->free_thresh = rx_conf->rx_free_thresh ?
85 rx_conf->rx_free_thresh : AXGBE_RX_FREE_THRESH;
86 if (rxq->free_thresh > rxq->nb_desc)
87 rxq->free_thresh = rxq->nb_desc >> 3;
89 /* Allocate RX ring hardware descriptors */
90 size = rxq->nb_desc * sizeof(union axgbe_rx_desc);
91 dma = rte_eth_dma_zone_reserve(dev, "rx_ring", queue_idx, size, 128,
94 PMD_DRV_LOG(ERR, "ring_dma_zone_reserve for rx_ring failed\n");
95 axgbe_rx_queue_release(rxq);
98 rxq->ring_phys_addr = (uint64_t)dma->phys_addr;
99 rxq->desc = (volatile union axgbe_rx_desc *)dma->addr;
100 memset((void *)rxq->desc, 0, size);
101 /* Allocate software ring */
102 size = rxq->nb_desc * sizeof(struct rte_mbuf *);
103 rxq->sw_ring = rte_zmalloc_socket("sw_ring", size,
107 PMD_DRV_LOG(ERR, "rte_zmalloc for sw_ring failed\n");
108 axgbe_rx_queue_release(rxq);
111 dev->data->rx_queues[queue_idx] = rxq;
112 if (!pdata->rx_queues)
113 pdata->rx_queues = dev->data->rx_queues;
118 static void axgbe_prepare_rx_stop(struct axgbe_port *pdata,
121 unsigned int rx_status;
122 unsigned long rx_timeout;
124 /* The Rx engine cannot be stopped if it is actively processing
125 * packets. Wait for the Rx queue to empty the Rx fifo. Don't
126 * wait forever though...
128 rx_timeout = rte_get_timer_cycles() + (AXGBE_DMA_STOP_TIMEOUT *
131 while (time_before(rte_get_timer_cycles(), rx_timeout)) {
132 rx_status = AXGMAC_MTL_IOREAD(pdata, queue, MTL_Q_RQDR);
133 if ((AXGMAC_GET_BITS(rx_status, MTL_Q_RQDR, PRXQ) == 0) &&
134 (AXGMAC_GET_BITS(rx_status, MTL_Q_RQDR, RXQSTS) == 0))
140 if (!time_before(rte_get_timer_cycles(), rx_timeout))
142 "timed out waiting for Rx queue %u to empty\n",
146 void axgbe_dev_disable_rx(struct rte_eth_dev *dev)
148 struct axgbe_rx_queue *rxq;
149 struct axgbe_port *pdata = dev->data->dev_private;
153 AXGMAC_IOWRITE_BITS(pdata, MAC_RCR, DCRCC, 0);
154 AXGMAC_IOWRITE_BITS(pdata, MAC_RCR, CST, 0);
155 AXGMAC_IOWRITE_BITS(pdata, MAC_RCR, ACS, 0);
156 AXGMAC_IOWRITE_BITS(pdata, MAC_RCR, RE, 0);
158 /* Prepare for Rx DMA channel stop */
159 for (i = 0; i < dev->data->nb_rx_queues; i++) {
160 rxq = dev->data->rx_queues[i];
161 axgbe_prepare_rx_stop(pdata, i);
163 /* Disable each Rx queue */
164 AXGMAC_IOWRITE(pdata, MAC_RQC0R, 0);
165 for (i = 0; i < dev->data->nb_rx_queues; i++) {
166 rxq = dev->data->rx_queues[i];
167 /* Disable Rx DMA channel */
168 AXGMAC_DMA_IOWRITE_BITS(rxq, DMA_CH_RCR, SR, 0);
172 void axgbe_dev_enable_rx(struct rte_eth_dev *dev)
174 struct axgbe_rx_queue *rxq;
175 struct axgbe_port *pdata = dev->data->dev_private;
177 unsigned int reg_val = 0;
179 for (i = 0; i < dev->data->nb_rx_queues; i++) {
180 rxq = dev->data->rx_queues[i];
181 /* Enable Rx DMA channel */
182 AXGMAC_DMA_IOWRITE_BITS(rxq, DMA_CH_RCR, SR, 1);
186 for (i = 0; i < pdata->rx_q_count; i++)
187 reg_val |= (0x02 << (i << 1));
188 AXGMAC_IOWRITE(pdata, MAC_RQC0R, reg_val);
191 AXGMAC_IOWRITE_BITS(pdata, MAC_RCR, DCRCC, 1);
192 /* Frame is forwarded after stripping CRC to application*/
193 if (pdata->crc_strip_enable) {
194 AXGMAC_IOWRITE_BITS(pdata, MAC_RCR, CST, 1);
195 AXGMAC_IOWRITE_BITS(pdata, MAC_RCR, ACS, 1);
197 AXGMAC_IOWRITE_BITS(pdata, MAC_RCR, RE, 1);
200 /* Rx function one to one refresh */
202 axgbe_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts,
205 PMD_INIT_FUNC_TRACE();
207 struct axgbe_rx_queue *rxq = rx_queue;
208 volatile union axgbe_rx_desc *desc;
209 uint64_t old_dirty = rxq->dirty;
210 struct rte_mbuf *mbuf, *tmbuf;
212 uint32_t error_status;
213 uint16_t idx, pidx, pkt_len;
215 idx = AXGBE_GET_DESC_IDX(rxq, rxq->cur);
216 while (nb_rx < nb_pkts) {
217 if (unlikely(idx == rxq->nb_desc))
220 desc = &rxq->desc[idx];
222 if (AXGMAC_GET_BITS_LE(desc->write.desc3, RX_NORMAL_DESC3, OWN))
224 tmbuf = rte_mbuf_raw_alloc(rxq->mb_pool);
225 if (unlikely(!tmbuf)) {
226 PMD_DRV_LOG(ERR, "RX mbuf alloc failed port_id = %u"
228 (unsigned int)rxq->port_id,
229 (unsigned int)rxq->queue_id);
231 rxq->port_id].data->rx_mbuf_alloc_failed++;
235 if (unlikely(pidx == rxq->nb_desc))
238 rte_prefetch0(rxq->sw_ring[pidx]);
239 if ((pidx & 0x3) == 0) {
240 rte_prefetch0(&rxq->desc[pidx]);
241 rte_prefetch0(&rxq->sw_ring[pidx]);
244 mbuf = rxq->sw_ring[idx];
245 /* Check for any errors and free mbuf*/
246 err = AXGMAC_GET_BITS_LE(desc->write.desc3,
247 RX_NORMAL_DESC3, ES);
250 error_status = desc->write.desc3 & AXGBE_ERR_STATUS;
251 if ((error_status != AXGBE_L3_CSUM_ERR) &&
252 (error_status != AXGBE_L4_CSUM_ERR)) {
254 rte_pktmbuf_free(mbuf);
258 if (rxq->pdata->rx_csum_enable) {
260 mbuf->ol_flags |= PKT_RX_IP_CKSUM_GOOD;
261 mbuf->ol_flags |= PKT_RX_L4_CKSUM_GOOD;
262 if (unlikely(error_status == AXGBE_L3_CSUM_ERR)) {
263 mbuf->ol_flags &= ~PKT_RX_IP_CKSUM_GOOD;
264 mbuf->ol_flags |= PKT_RX_IP_CKSUM_BAD;
265 mbuf->ol_flags &= ~PKT_RX_L4_CKSUM_GOOD;
266 mbuf->ol_flags |= PKT_RX_L4_CKSUM_UNKNOWN;
268 unlikely(error_status == AXGBE_L4_CSUM_ERR)) {
269 mbuf->ol_flags &= ~PKT_RX_L4_CKSUM_GOOD;
270 mbuf->ol_flags |= PKT_RX_L4_CKSUM_BAD;
273 rte_prefetch1(rte_pktmbuf_mtod(mbuf, void *));
274 /* Get the RSS hash */
275 if (AXGMAC_GET_BITS_LE(desc->write.desc3, RX_NORMAL_DESC3, RSV))
276 mbuf->hash.rss = rte_le_to_cpu_32(desc->write.desc1);
277 pkt_len = AXGMAC_GET_BITS_LE(desc->write.desc3, RX_NORMAL_DESC3,
281 mbuf->data_off = RTE_PKTMBUF_HEADROOM;
283 mbuf->port = rxq->port_id;
284 mbuf->pkt_len = pkt_len;
285 mbuf->data_len = pkt_len;
286 rxq->bytes += pkt_len;
287 rx_pkts[nb_rx++] = mbuf;
290 rxq->sw_ring[idx++] = tmbuf;
292 rte_cpu_to_le_64(rte_mbuf_data_iova_default(tmbuf));
293 memset((void *)(&desc->read.desc2), 0, 8);
294 AXGMAC_SET_BITS_LE(desc->read.desc3, RX_NORMAL_DESC3, OWN, 1);
298 if (rxq->dirty != old_dirty) {
300 idx = AXGBE_GET_DESC_IDX(rxq, rxq->dirty - 1);
301 AXGMAC_DMA_IOWRITE(rxq, DMA_CH_RDTR_LO,
302 low32_value(rxq->ring_phys_addr +
303 (idx * sizeof(union axgbe_rx_desc))));
310 static void axgbe_tx_queue_release(struct axgbe_tx_queue *tx_queue)
313 struct rte_mbuf **sw_ring;
316 sw_ring = tx_queue->sw_ring;
318 for (i = 0; i < tx_queue->nb_desc; i++) {
320 rte_pktmbuf_free(sw_ring[i]);
328 void axgbe_dev_tx_queue_release(void *txq)
330 axgbe_tx_queue_release(txq);
333 int axgbe_dev_tx_queue_setup(struct rte_eth_dev *dev, uint16_t queue_idx,
334 uint16_t nb_desc, unsigned int socket_id,
335 const struct rte_eth_txconf *tx_conf)
337 PMD_INIT_FUNC_TRACE();
339 struct axgbe_port *pdata;
340 struct axgbe_tx_queue *txq;
342 const struct rte_memzone *tz;
345 pdata = dev->data->dev_private;
348 * validate tx descriptors count
349 * should be power of 2 and less than h/w supported
351 if ((!rte_is_power_of_2(tx_desc)) ||
352 tx_desc > pdata->tx_desc_count ||
353 tx_desc < AXGBE_MIN_RING_DESC)
356 /* First allocate the tx queue data structure */
357 txq = rte_zmalloc("ethdev TX queue", sizeof(struct axgbe_tx_queue),
358 RTE_CACHE_LINE_SIZE);
363 txq->nb_desc = tx_desc;
364 txq->free_thresh = tx_conf->tx_free_thresh ?
365 tx_conf->tx_free_thresh : AXGBE_TX_FREE_THRESH;
366 if (txq->free_thresh > txq->nb_desc)
367 txq->free_thresh = (txq->nb_desc >> 1);
368 txq->free_batch_cnt = txq->free_thresh;
370 /* In vector_tx path threshold should be multiple of queue_size*/
371 if (txq->nb_desc % txq->free_thresh != 0)
372 txq->vector_disable = 1;
374 if (tx_conf->offloads != 0)
375 txq->vector_disable = 1;
377 /* Allocate TX ring hardware descriptors */
378 tsize = txq->nb_desc * sizeof(struct axgbe_tx_desc);
379 tz = rte_eth_dma_zone_reserve(dev, "tx_ring", queue_idx,
380 tsize, AXGBE_DESC_ALIGN, socket_id);
382 axgbe_tx_queue_release(txq);
385 memset(tz->addr, 0, tsize);
386 txq->ring_phys_addr = (uint64_t)tz->phys_addr;
387 txq->desc = tz->addr;
388 txq->queue_id = queue_idx;
389 txq->port_id = dev->data->port_id;
390 txq->dma_regs = (void *)((uint8_t *)pdata->xgmac_regs + DMA_CH_BASE +
391 (DMA_CH_INC * txq->queue_id));
392 txq->dma_tail_reg = (volatile uint32_t *)((uint8_t *)txq->dma_regs +
396 txq->nb_desc_free = txq->nb_desc;
397 /* Allocate software ring */
398 tsize = txq->nb_desc * sizeof(struct rte_mbuf *);
399 txq->sw_ring = rte_zmalloc("tx_sw_ring", tsize,
400 RTE_CACHE_LINE_SIZE);
402 axgbe_tx_queue_release(txq);
405 dev->data->tx_queues[queue_idx] = txq;
406 if (!pdata->tx_queues)
407 pdata->tx_queues = dev->data->tx_queues;
409 if (txq->vector_disable)
410 dev->tx_pkt_burst = &axgbe_xmit_pkts;
413 dev->tx_pkt_burst = &axgbe_xmit_pkts_vec;
415 dev->tx_pkt_burst = &axgbe_xmit_pkts;
421 static void axgbe_txq_prepare_tx_stop(struct axgbe_port *pdata,
424 unsigned int tx_status;
425 unsigned long tx_timeout;
427 /* The Tx engine cannot be stopped if it is actively processing
428 * packets. Wait for the Tx queue to empty the Tx fifo. Don't
429 * wait forever though...
431 tx_timeout = rte_get_timer_cycles() + (AXGBE_DMA_STOP_TIMEOUT *
433 while (time_before(rte_get_timer_cycles(), tx_timeout)) {
434 tx_status = AXGMAC_MTL_IOREAD(pdata, queue, MTL_Q_TQDR);
435 if ((AXGMAC_GET_BITS(tx_status, MTL_Q_TQDR, TRCSTS) != 1) &&
436 (AXGMAC_GET_BITS(tx_status, MTL_Q_TQDR, TXQSTS) == 0))
442 if (!time_before(rte_get_timer_cycles(), tx_timeout))
444 "timed out waiting for Tx queue %u to empty\n",
448 static void axgbe_prepare_tx_stop(struct axgbe_port *pdata,
451 unsigned int tx_dsr, tx_pos, tx_qidx;
452 unsigned int tx_status;
453 unsigned long tx_timeout;
455 if (AXGMAC_GET_BITS(pdata->hw_feat.version, MAC_VR, SNPSVER) > 0x20)
456 return axgbe_txq_prepare_tx_stop(pdata, queue);
458 /* Calculate the status register to read and the position within */
459 if (queue < DMA_DSRX_FIRST_QUEUE) {
461 tx_pos = (queue * DMA_DSR_Q_WIDTH) + DMA_DSR0_TPS_START;
463 tx_qidx = queue - DMA_DSRX_FIRST_QUEUE;
465 tx_dsr = DMA_DSR1 + ((tx_qidx / DMA_DSRX_QPR) * DMA_DSRX_INC);
466 tx_pos = ((tx_qidx % DMA_DSRX_QPR) * DMA_DSR_Q_WIDTH) +
470 /* The Tx engine cannot be stopped if it is actively processing
471 * descriptors. Wait for the Tx engine to enter the stopped or
472 * suspended state. Don't wait forever though...
474 tx_timeout = rte_get_timer_cycles() + (AXGBE_DMA_STOP_TIMEOUT *
476 while (time_before(rte_get_timer_cycles(), tx_timeout)) {
477 tx_status = AXGMAC_IOREAD(pdata, tx_dsr);
478 tx_status = GET_BITS(tx_status, tx_pos, DMA_DSR_TPS_WIDTH);
479 if ((tx_status == DMA_TPS_STOPPED) ||
480 (tx_status == DMA_TPS_SUSPENDED))
486 if (!time_before(rte_get_timer_cycles(), tx_timeout))
488 "timed out waiting for Tx DMA channel %u to stop\n",
492 void axgbe_dev_disable_tx(struct rte_eth_dev *dev)
494 struct axgbe_tx_queue *txq;
495 struct axgbe_port *pdata = dev->data->dev_private;
498 /* Prepare for stopping DMA channel */
499 for (i = 0; i < pdata->tx_q_count; i++) {
500 txq = dev->data->tx_queues[i];
501 axgbe_prepare_tx_stop(pdata, i);
504 AXGMAC_IOWRITE_BITS(pdata, MAC_TCR, TE, 0);
505 /* Disable each Tx queue*/
506 for (i = 0; i < pdata->tx_q_count; i++)
507 AXGMAC_MTL_IOWRITE_BITS(pdata, i, MTL_Q_TQOMR, TXQEN,
509 /* Disable each Tx DMA channel */
510 for (i = 0; i < dev->data->nb_tx_queues; i++) {
511 txq = dev->data->tx_queues[i];
512 AXGMAC_DMA_IOWRITE_BITS(txq, DMA_CH_TCR, ST, 0);
516 void axgbe_dev_enable_tx(struct rte_eth_dev *dev)
518 struct axgbe_tx_queue *txq;
519 struct axgbe_port *pdata = dev->data->dev_private;
522 for (i = 0; i < dev->data->nb_tx_queues; i++) {
523 txq = dev->data->tx_queues[i];
524 /* Enable Tx DMA channel */
525 AXGMAC_DMA_IOWRITE_BITS(txq, DMA_CH_TCR, ST, 1);
528 for (i = 0; i < pdata->tx_q_count; i++)
529 AXGMAC_MTL_IOWRITE_BITS(pdata, i, MTL_Q_TQOMR, TXQEN,
532 AXGMAC_IOWRITE_BITS(pdata, MAC_TCR, TE, 1);
535 /* Free Tx conformed mbufs */
536 static void axgbe_xmit_cleanup(struct axgbe_tx_queue *txq)
538 volatile struct axgbe_tx_desc *desc;
541 idx = AXGBE_GET_DESC_IDX(txq, txq->dirty);
542 while (txq->cur != txq->dirty) {
543 if (unlikely(idx == txq->nb_desc))
545 desc = &txq->desc[idx];
546 /* Check for ownership */
547 if (AXGMAC_GET_BITS_LE(desc->desc3, TX_NORMAL_DESC3, OWN))
549 memset((void *)&desc->desc2, 0, 8);
551 rte_pktmbuf_free(txq->sw_ring[idx]);
552 txq->sw_ring[idx++] = NULL;
557 /* Tx Descriptor formation
558 * Considering each mbuf requires one desc
561 static int axgbe_xmit_hw(struct axgbe_tx_queue *txq,
562 struct rte_mbuf *mbuf)
564 volatile struct axgbe_tx_desc *desc;
568 idx = AXGBE_GET_DESC_IDX(txq, txq->cur);
569 desc = &txq->desc[idx];
571 /* Update buffer address and length */
572 desc->baddr = rte_mbuf_data_iova(mbuf);
573 AXGMAC_SET_BITS_LE(desc->desc2, TX_NORMAL_DESC2, HL_B1L,
575 /* Total msg length to transmit */
576 AXGMAC_SET_BITS_LE(desc->desc3, TX_NORMAL_DESC3, FL,
578 /* Mark it as First and Last Descriptor */
579 AXGMAC_SET_BITS_LE(desc->desc3, TX_NORMAL_DESC3, FD, 1);
580 AXGMAC_SET_BITS_LE(desc->desc3, TX_NORMAL_DESC3, LD, 1);
581 /* Mark it as a NORMAL descriptor */
582 AXGMAC_SET_BITS_LE(desc->desc3, TX_NORMAL_DESC3, CTXT, 0);
583 /* configure h/w Offload */
584 mask = mbuf->ol_flags & PKT_TX_L4_MASK;
585 if ((mask == PKT_TX_TCP_CKSUM) || (mask == PKT_TX_UDP_CKSUM))
586 AXGMAC_SET_BITS_LE(desc->desc3, TX_NORMAL_DESC3, CIC, 0x3);
587 else if (mbuf->ol_flags & PKT_TX_IP_CKSUM)
588 AXGMAC_SET_BITS_LE(desc->desc3, TX_NORMAL_DESC3, CIC, 0x1);
592 AXGMAC_SET_BITS_LE(desc->desc3, TX_NORMAL_DESC3, OWN, 1);
596 txq->sw_ring[idx] = mbuf;
597 /* Update current index*/
600 txq->bytes += mbuf->pkt_len;
605 /* Eal supported tx wrapper*/
607 axgbe_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts,
610 PMD_INIT_FUNC_TRACE();
612 if (unlikely(nb_pkts == 0))
615 struct axgbe_tx_queue *txq;
616 uint16_t nb_desc_free;
617 uint16_t nb_pkt_sent = 0;
620 struct rte_mbuf *mbuf;
622 txq = (struct axgbe_tx_queue *)tx_queue;
623 nb_desc_free = txq->nb_desc - (txq->cur - txq->dirty);
625 if (unlikely(nb_desc_free <= txq->free_thresh)) {
626 axgbe_xmit_cleanup(txq);
627 nb_desc_free = txq->nb_desc - (txq->cur - txq->dirty);
628 if (unlikely(nb_desc_free == 0))
631 nb_pkts = RTE_MIN(nb_desc_free, nb_pkts);
634 if (axgbe_xmit_hw(txq, mbuf))
639 /* Sync read and write */
641 idx = AXGBE_GET_DESC_IDX(txq, txq->cur);
642 tail_addr = low32_value(txq->ring_phys_addr +
643 idx * sizeof(struct axgbe_tx_desc));
644 /* Update tail reg with next immediate address to kick Tx DMA channel*/
645 AXGMAC_DMA_IOWRITE(txq, DMA_CH_TDTR_LO, tail_addr);
646 txq->pkts += nb_pkt_sent;
650 void axgbe_dev_clear_queues(struct rte_eth_dev *dev)
652 PMD_INIT_FUNC_TRACE();
654 struct axgbe_rx_queue *rxq;
655 struct axgbe_tx_queue *txq;
657 for (i = 0; i < dev->data->nb_rx_queues; i++) {
658 rxq = dev->data->rx_queues[i];
661 axgbe_rx_queue_release(rxq);
662 dev->data->rx_queues[i] = NULL;
666 for (i = 0; i < dev->data->nb_tx_queues; i++) {
667 txq = dev->data->tx_queues[i];
670 axgbe_tx_queue_release(txq);
671 dev->data->tx_queues[i] = NULL;