Lines Matching +full:axistream +full:- +full:connected
1 // SPDX-License-Identifier: GPL-2.0-only
6 * Copyright (c) 2005-2008 DLA Systems, David H. Lynch Jr. <[email protected]>
7 * Copyright (c) 2008-2009 Secret Lab Technologies Ltd.
8 * Copyright (c) 2010 - 2011 Michal Simek <[email protected]>
9 * Copyright (c) 2010 - 2011 PetaLogix
10 * Copyright (c) 2019 - 2022 Calian Advanced Technologies
11 * Copyright (c) 2010 - 2012 Xilinx, Inc. All rights reserved.
17 * - Add Axi Fifo support.
18 * - Factor out Axi DMA code into separate driver.
19 * - Test and fix basic multicast filtering.
20 * - Add support for extended multicast filtering.
21 * - Test basic VLAN support.
22 * - Add support for extended VLAN support.
42 #include <linux/dma-mapping.h>
70 { .compatible = "xlnx,axi-ethernet-1.00.a", },
71 { .compatible = "xlnx,axi-ethernet-1.01.a", },
72 { .compatible = "xlnx,axi-ethernet-2.01.a", },
135 return lp->rx_skb_ring[i & (RX_BUF_NUM_DEFAULT - 1)]; in axienet_get_rx_desc()
140 return lp->tx_skb_ring[i & (TX_BD_NUM_MAX - 1)]; in axienet_get_tx_desc()
144 * axienet_dma_in32 - Memory mapped Axi DMA register read
154 return ioread32(lp->dma_regs + reg); in axienet_dma_in32()
160 desc->phys = lower_32_bits(addr); in desc_set_phys_addr()
161 if (lp->features & XAE_FEATURE_DMA_64BIT) in desc_set_phys_addr()
162 desc->phys_msb = upper_32_bits(addr); in desc_set_phys_addr()
168 dma_addr_t ret = desc->phys; in desc_get_phys_addr()
170 if (lp->features & XAE_FEATURE_DMA_64BIT) in desc_get_phys_addr()
171 ret |= ((dma_addr_t)desc->phys_msb << 16) << 16; in desc_get_phys_addr()
177 * axienet_dma_bd_release - Release buffer descriptor rings
190 dma_free_coherent(lp->dev, in axienet_dma_bd_release()
191 sizeof(*lp->tx_bd_v) * lp->tx_bd_num, in axienet_dma_bd_release()
192 lp->tx_bd_v, in axienet_dma_bd_release()
193 lp->tx_bd_p); in axienet_dma_bd_release()
195 if (!lp->rx_bd_v) in axienet_dma_bd_release()
198 for (i = 0; i < lp->rx_bd_num; i++) { in axienet_dma_bd_release()
204 if (!lp->rx_bd_v[i].skb) in axienet_dma_bd_release()
207 dev_kfree_skb(lp->rx_bd_v[i].skb); in axienet_dma_bd_release()
209 /* For each descriptor, we programmed cntrl with the (non-zero) in axienet_dma_bd_release()
211 * So a non-zero value in there means we need to unmap it. in axienet_dma_bd_release()
213 if (lp->rx_bd_v[i].cntrl) { in axienet_dma_bd_release()
214 phys = desc_get_phys_addr(lp, &lp->rx_bd_v[i]); in axienet_dma_bd_release()
215 dma_unmap_single(lp->dev, phys, in axienet_dma_bd_release()
216 lp->max_frm_size, DMA_FROM_DEVICE); in axienet_dma_bd_release()
220 dma_free_coherent(lp->dev, in axienet_dma_bd_release()
221 sizeof(*lp->rx_bd_v) * lp->rx_bd_num, in axienet_dma_bd_release()
222 lp->rx_bd_v, in axienet_dma_bd_release()
223 lp->rx_bd_p); in axienet_dma_bd_release()
227 * axienet_usec_to_timer - Calculate IRQ delay timer value
236 if (lp->axi_clk) in axienet_usec_to_timer()
237 clk_rate = clk_get_rate(lp->axi_clk); in axienet_usec_to_timer()
246 * axienet_dma_start - Set up DMA registers and start DMA operation
252 lp->rx_dma_cr = (lp->coalesce_count_rx << XAXIDMA_COALESCE_SHIFT) | in axienet_dma_start()
257 if (lp->coalesce_count_rx > 1) in axienet_dma_start()
258 lp->rx_dma_cr |= (axienet_usec_to_timer(lp, lp->coalesce_usec_rx) in axienet_dma_start()
261 axienet_dma_out32(lp, XAXIDMA_RX_CR_OFFSET, lp->rx_dma_cr); in axienet_dma_start()
264 lp->tx_dma_cr = (lp->coalesce_count_tx << XAXIDMA_COALESCE_SHIFT) | in axienet_dma_start()
269 if (lp->coalesce_count_tx > 1) in axienet_dma_start()
270 lp->tx_dma_cr |= (axienet_usec_to_timer(lp, lp->coalesce_usec_tx) in axienet_dma_start()
273 axienet_dma_out32(lp, XAXIDMA_TX_CR_OFFSET, lp->tx_dma_cr); in axienet_dma_start()
278 axienet_dma_out_addr(lp, XAXIDMA_RX_CDESC_OFFSET, lp->rx_bd_p); in axienet_dma_start()
279 lp->rx_dma_cr |= XAXIDMA_CR_RUNSTOP_MASK; in axienet_dma_start()
280 axienet_dma_out32(lp, XAXIDMA_RX_CR_OFFSET, lp->rx_dma_cr); in axienet_dma_start()
281 axienet_dma_out_addr(lp, XAXIDMA_RX_TDESC_OFFSET, lp->rx_bd_p + in axienet_dma_start()
282 (sizeof(*lp->rx_bd_v) * (lp->rx_bd_num - 1))); in axienet_dma_start()
284 /* Write to the RS (Run-stop) bit in the Tx channel control register. in axienet_dma_start()
288 axienet_dma_out_addr(lp, XAXIDMA_TX_CDESC_OFFSET, lp->tx_bd_p); in axienet_dma_start()
289 lp->tx_dma_cr |= XAXIDMA_CR_RUNSTOP_MASK; in axienet_dma_start()
290 axienet_dma_out32(lp, XAXIDMA_TX_CR_OFFSET, lp->tx_dma_cr); in axienet_dma_start()
294 * axienet_dma_bd_init - Setup buffer descriptor rings for Axi DMA
297 * Return: 0, on success -ENOMEM, on failure
310 lp->tx_bd_ci = 0; in axienet_dma_bd_init()
311 lp->tx_bd_tail = 0; in axienet_dma_bd_init()
312 lp->rx_bd_ci = 0; in axienet_dma_bd_init()
315 lp->tx_bd_v = dma_alloc_coherent(lp->dev, in axienet_dma_bd_init()
316 sizeof(*lp->tx_bd_v) * lp->tx_bd_num, in axienet_dma_bd_init()
317 &lp->tx_bd_p, GFP_KERNEL); in axienet_dma_bd_init()
318 if (!lp->tx_bd_v) in axienet_dma_bd_init()
319 return -ENOMEM; in axienet_dma_bd_init()
321 lp->rx_bd_v = dma_alloc_coherent(lp->dev, in axienet_dma_bd_init()
322 sizeof(*lp->rx_bd_v) * lp->rx_bd_num, in axienet_dma_bd_init()
323 &lp->rx_bd_p, GFP_KERNEL); in axienet_dma_bd_init()
324 if (!lp->rx_bd_v) in axienet_dma_bd_init()
327 for (i = 0; i < lp->tx_bd_num; i++) { in axienet_dma_bd_init()
328 dma_addr_t addr = lp->tx_bd_p + in axienet_dma_bd_init()
329 sizeof(*lp->tx_bd_v) * in axienet_dma_bd_init()
330 ((i + 1) % lp->tx_bd_num); in axienet_dma_bd_init()
332 lp->tx_bd_v[i].next = lower_32_bits(addr); in axienet_dma_bd_init()
333 if (lp->features & XAE_FEATURE_DMA_64BIT) in axienet_dma_bd_init()
334 lp->tx_bd_v[i].next_msb = upper_32_bits(addr); in axienet_dma_bd_init()
337 for (i = 0; i < lp->rx_bd_num; i++) { in axienet_dma_bd_init()
340 addr = lp->rx_bd_p + sizeof(*lp->rx_bd_v) * in axienet_dma_bd_init()
341 ((i + 1) % lp->rx_bd_num); in axienet_dma_bd_init()
342 lp->rx_bd_v[i].next = lower_32_bits(addr); in axienet_dma_bd_init()
343 if (lp->features & XAE_FEATURE_DMA_64BIT) in axienet_dma_bd_init()
344 lp->rx_bd_v[i].next_msb = upper_32_bits(addr); in axienet_dma_bd_init()
346 skb = netdev_alloc_skb_ip_align(ndev, lp->max_frm_size); in axienet_dma_bd_init()
350 lp->rx_bd_v[i].skb = skb; in axienet_dma_bd_init()
351 addr = dma_map_single(lp->dev, skb->data, in axienet_dma_bd_init()
352 lp->max_frm_size, DMA_FROM_DEVICE); in axienet_dma_bd_init()
353 if (dma_mapping_error(lp->dev, addr)) { in axienet_dma_bd_init()
357 desc_set_phys_addr(lp, addr, &lp->rx_bd_v[i]); in axienet_dma_bd_init()
359 lp->rx_bd_v[i].cntrl = lp->max_frm_size; in axienet_dma_bd_init()
367 return -ENOMEM; in axienet_dma_bd_init()
371 * axienet_set_mac_address - Write the MAC address
385 if (!is_valid_ether_addr(ndev->dev_addr)) in axienet_set_mac_address()
390 (ndev->dev_addr[0]) | in axienet_set_mac_address()
391 (ndev->dev_addr[1] << 8) | in axienet_set_mac_address()
392 (ndev->dev_addr[2] << 16) | in axienet_set_mac_address()
393 (ndev->dev_addr[3] << 24)); in axienet_set_mac_address()
397 (ndev->dev_addr[4] | in axienet_set_mac_address()
398 (ndev->dev_addr[5] << 8)))); in axienet_set_mac_address()
402 * netdev_set_mac_address - Write the MAC address (from outside the driver)
416 axienet_set_mac_address(ndev, addr->sa_data); in netdev_set_mac_address()
421 * axienet_set_multicast_list - Prepare the multicast table
425 * initialization. The Axi Ethernet basic multicast support has a four-entry
439 if (ndev->flags & IFF_PROMISC) in axienet_set_multicast_list()
445 if (ndev->flags & IFF_ALLMULTI || in axienet_set_multicast_list()
462 af0reg = (ha->addr[0]); in axienet_set_multicast_list()
463 af0reg |= (ha->addr[1] << 8); in axienet_set_multicast_list()
464 af0reg |= (ha->addr[2] << 16); in axienet_set_multicast_list()
465 af0reg |= (ha->addr[3] << 24); in axienet_set_multicast_list()
467 af1reg = (ha->addr[4]); in axienet_set_multicast_list()
468 af1reg |= (ha->addr[5] << 8); in axienet_set_multicast_list()
492 * axienet_setoptions - Set an Axi Ethernet option
508 while (tp->opt) { in axienet_setoptions()
509 reg = ((axienet_ior(lp, tp->reg)) & ~(tp->m_or)); in axienet_setoptions()
510 if (options & tp->opt) in axienet_setoptions()
511 reg |= tp->m_or; in axienet_setoptions()
512 axienet_iow(lp, tp->reg, reg); in axienet_setoptions()
516 lp->options |= options; in axienet_setoptions()
523 if (lp->reset_in_progress) in axienet_stat()
524 return lp->hw_stat_base[stat]; in axienet_stat()
527 return lp->hw_stat_base[stat] + (counter - lp->hw_last_counter[stat]); in axienet_stat()
534 write_seqcount_begin(&lp->hw_stats_seqcount); in axienet_stats_update()
535 lp->reset_in_progress = reset; in axienet_stats_update()
539 lp->hw_stat_base[stat] += counter - lp->hw_last_counter[stat]; in axienet_stats_update()
540 lp->hw_last_counter[stat] = counter; in axienet_stats_update()
542 write_seqcount_end(&lp->hw_stats_seqcount); in axienet_stats_update()
550 mutex_lock(&lp->stats_lock); in axienet_refresh_stats()
552 mutex_unlock(&lp->stats_lock); in axienet_refresh_stats()
555 schedule_delayed_work(&lp->stats_work, 13 * HZ); in axienet_refresh_stats()
564 mutex_lock(&lp->stats_lock); in __axienet_device_reset()
565 if (lp->features & XAE_FEATURE_STATS) in __axienet_device_reset()
581 dev_err(lp->dev, "%s: DMA reset timeout!\n", __func__); in __axienet_device_reset()
591 dev_err(lp->dev, "%s: timeout waiting for PhyRstCmplt\n", __func__); in __axienet_device_reset()
596 if (lp->features & XAE_FEATURE_STATS) { in __axienet_device_reset()
599 write_seqcount_begin(&lp->hw_stats_seqcount); in __axienet_device_reset()
600 lp->reset_in_progress = false; in __axienet_device_reset()
605 lp->hw_stat_base[stat] += in __axienet_device_reset()
606 lp->hw_last_counter[stat] - counter; in __axienet_device_reset()
607 lp->hw_last_counter[stat] = counter; in __axienet_device_reset()
609 write_seqcount_end(&lp->hw_stats_seqcount); in __axienet_device_reset()
613 mutex_unlock(&lp->stats_lock); in __axienet_device_reset()
618 * axienet_dma_stop - Stop DMA operation
629 synchronize_irq(lp->rx_irq); in axienet_dma_stop()
634 synchronize_irq(lp->tx_irq); in axienet_dma_stop()
656 * axienet_device_reset - Reset and initialize the Axi Ethernet hardware.
662 * are connected to Axi Ethernet reset lines, this in turn resets the Axi
673 lp->max_frm_size = XAE_MAX_VLAN_FRAME_SIZE; in axienet_device_reset()
674 lp->options |= XAE_OPTION_VLAN; in axienet_device_reset()
675 lp->options &= (~XAE_OPTION_JUMBO); in axienet_device_reset()
677 if (ndev->mtu > XAE_MTU && ndev->mtu <= XAE_JUMBO_MTU) { in axienet_device_reset()
678 lp->max_frm_size = ndev->mtu + VLAN_ETH_HLEN + in axienet_device_reset()
681 if (lp->max_frm_size <= lp->rxmem) in axienet_device_reset()
682 lp->options |= XAE_OPTION_JUMBO; in axienet_device_reset()
685 if (!lp->use_dmaengine) { in axienet_device_reset()
705 axienet_iow(lp, XAE_IE_OFFSET, lp->eth_irq > 0 ? in axienet_device_reset()
713 axienet_setoptions(ndev, lp->options & in axienet_device_reset()
717 axienet_setoptions(ndev, lp->options); in axienet_device_reset()
725 * axienet_free_tx_chain - Clean up a series of linked TX descriptors.
731 * in all cleaned-up descriptors. Ignored if NULL.
747 cur_p = &lp->tx_bd_v[(first_bd + i) % lp->tx_bd_num]; in axienet_free_tx_chain()
748 status = cur_p->status; in axienet_free_tx_chain()
759 dma_unmap_single(lp->dev, phys, in axienet_free_tx_chain()
760 (cur_p->cntrl & XAXIDMA_BD_CTRL_LENGTH_MASK), in axienet_free_tx_chain()
763 if (cur_p->skb && (status & XAXIDMA_BD_STS_COMPLETE_MASK)) { in axienet_free_tx_chain()
764 napi_consume_skb(cur_p->skb, budget); in axienet_free_tx_chain()
768 cur_p->app0 = 0; in axienet_free_tx_chain()
769 cur_p->app1 = 0; in axienet_free_tx_chain()
770 cur_p->app2 = 0; in axienet_free_tx_chain()
771 cur_p->app4 = 0; in axienet_free_tx_chain()
772 cur_p->skb = NULL; in axienet_free_tx_chain()
775 cur_p->cntrl = 0; in axienet_free_tx_chain()
776 cur_p->status = 0; in axienet_free_tx_chain()
783 lp->tx_bd_ci += i; in axienet_free_tx_chain()
784 if (lp->tx_bd_ci >= lp->tx_bd_num) in axienet_free_tx_chain()
785 lp->tx_bd_ci %= lp->tx_bd_num; in axienet_free_tx_chain()
792 * axienet_check_tx_bd_space - Checks if a BD/group of BDs are currently busy
811 cur_p = &lp->tx_bd_v[(READ_ONCE(lp->tx_bd_tail) + num_frag) % in axienet_check_tx_bd_space()
812 lp->tx_bd_num]; in axienet_check_tx_bd_space()
813 if (cur_p->cntrl) in axienet_check_tx_bd_space()
819 * axienet_dma_tx_cb - DMA engine callback for TX channel.
832 skbuf_dma = axienet_get_tx_desc(lp, lp->tx_ring_tail++); in axienet_dma_tx_cb()
833 len = skbuf_dma->skb->len; in axienet_dma_tx_cb()
834 txq = skb_get_tx_queue(lp->ndev, skbuf_dma->skb); in axienet_dma_tx_cb()
835 u64_stats_update_begin(&lp->tx_stat_sync); in axienet_dma_tx_cb()
836 u64_stats_add(&lp->tx_bytes, len); in axienet_dma_tx_cb()
837 u64_stats_add(&lp->tx_packets, 1); in axienet_dma_tx_cb()
838 u64_stats_update_end(&lp->tx_stat_sync); in axienet_dma_tx_cb()
839 dma_unmap_sg(lp->dev, skbuf_dma->sgl, skbuf_dma->sg_len, DMA_TO_DEVICE); in axienet_dma_tx_cb()
840 dev_consume_skb_any(skbuf_dma->skb); in axienet_dma_tx_cb()
842 CIRC_SPACE(lp->tx_ring_head, lp->tx_ring_tail, TX_BD_NUM_MAX), in axienet_dma_tx_cb()
847 * axienet_start_xmit_dmaengine - Starts the transmission.
875 dma_dev = lp->tx_chan->device; in axienet_start_xmit_dmaengine()
876 sg_len = skb_shinfo(skb)->nr_frags + 1; in axienet_start_xmit_dmaengine()
877 if (CIRC_SPACE(lp->tx_ring_head, lp->tx_ring_tail, TX_BD_NUM_MAX) <= sg_len) { in axienet_start_xmit_dmaengine()
884 skbuf_dma = axienet_get_tx_desc(lp, lp->tx_ring_head); in axienet_start_xmit_dmaengine()
888 lp->tx_ring_head++; in axienet_start_xmit_dmaengine()
889 sg_init_table(skbuf_dma->sgl, sg_len); in axienet_start_xmit_dmaengine()
890 ret = skb_to_sgvec(skb, skbuf_dma->sgl, 0, skb->len); in axienet_start_xmit_dmaengine()
894 ret = dma_map_sg(lp->dev, skbuf_dma->sgl, sg_len, DMA_TO_DEVICE); in axienet_start_xmit_dmaengine()
899 if (skb->ip_summed == CHECKSUM_PARTIAL) { in axienet_start_xmit_dmaengine()
900 if (lp->features & XAE_FEATURE_FULL_TX_CSUM) { in axienet_start_xmit_dmaengine()
903 } else if (lp->features & XAE_FEATURE_PARTIAL_TX_CSUM) { in axienet_start_xmit_dmaengine()
905 csum_index_off = csum_start_off + skb->csum_offset; in axienet_start_xmit_dmaengine()
910 } else if (skb->ip_summed == CHECKSUM_UNNECESSARY) { in axienet_start_xmit_dmaengine()
914 dma_tx_desc = dma_dev->device_prep_slave_sg(lp->tx_chan, skbuf_dma->sgl, in axienet_start_xmit_dmaengine()
920 skbuf_dma->skb = skb; in axienet_start_xmit_dmaengine()
921 skbuf_dma->sg_len = sg_len; in axienet_start_xmit_dmaengine()
922 dma_tx_desc->callback_param = lp; in axienet_start_xmit_dmaengine()
923 dma_tx_desc->callback_result = axienet_dma_tx_cb; in axienet_start_xmit_dmaengine()
924 txq = skb_get_tx_queue(lp->ndev, skb); in axienet_start_xmit_dmaengine()
925 netdev_tx_sent_queue(txq, skb->len); in axienet_start_xmit_dmaengine()
926 netif_txq_maybe_stop(txq, CIRC_SPACE(lp->tx_ring_head, lp->tx_ring_tail, TX_BD_NUM_MAX), in axienet_start_xmit_dmaengine()
930 dma_async_issue_pending(lp->tx_chan); in axienet_start_xmit_dmaengine()
934 dma_unmap_sg(lp->dev, skbuf_dma->sgl, sg_len, DMA_TO_DEVICE); in axienet_start_xmit_dmaengine()
941 * axienet_tx_poll - Invoked once a transmit is completed by the
957 struct net_device *ndev = lp->ndev; in axienet_tx_poll()
961 packets = axienet_free_tx_chain(lp, lp->tx_bd_ci, lp->tx_bd_num, false, in axienet_tx_poll()
965 u64_stats_update_begin(&lp->tx_stat_sync); in axienet_tx_poll()
966 u64_stats_add(&lp->tx_packets, packets); in axienet_tx_poll()
967 u64_stats_add(&lp->tx_bytes, size); in axienet_tx_poll()
968 u64_stats_update_end(&lp->tx_stat_sync); in axienet_tx_poll()
978 /* Re-enable TX completion interrupts. This should in axienet_tx_poll()
982 axienet_dma_out32(lp, XAXIDMA_TX_CR_OFFSET, lp->tx_dma_cr); in axienet_tx_poll()
988 * axienet_start_xmit - Starts the transmission.
1013 orig_tail_ptr = lp->tx_bd_tail; in axienet_start_xmit()
1016 num_frag = skb_shinfo(skb)->nr_frags; in axienet_start_xmit()
1017 cur_p = &lp->tx_bd_v[orig_tail_ptr]; in axienet_start_xmit()
1030 if (skb->ip_summed == CHECKSUM_PARTIAL) { in axienet_start_xmit()
1031 if (lp->features & XAE_FEATURE_FULL_TX_CSUM) { in axienet_start_xmit()
1033 cur_p->app0 |= 2; in axienet_start_xmit()
1034 } else if (lp->features & XAE_FEATURE_PARTIAL_TX_CSUM) { in axienet_start_xmit()
1036 csum_index_off = csum_start_off + skb->csum_offset; in axienet_start_xmit()
1038 cur_p->app0 |= 1; in axienet_start_xmit()
1039 cur_p->app1 = (csum_start_off << 16) | csum_index_off; in axienet_start_xmit()
1041 } else if (skb->ip_summed == CHECKSUM_UNNECESSARY) { in axienet_start_xmit()
1042 cur_p->app0 |= 2; /* Tx Full Checksum Offload Enabled */ in axienet_start_xmit()
1045 phys = dma_map_single(lp->dev, skb->data, in axienet_start_xmit()
1047 if (unlikely(dma_mapping_error(lp->dev, phys))) { in axienet_start_xmit()
1050 ndev->stats.tx_dropped++; in axienet_start_xmit()
1055 cur_p->cntrl = skb_headlen(skb) | XAXIDMA_BD_CTRL_TXSOF_MASK; in axienet_start_xmit()
1058 if (++new_tail_ptr >= lp->tx_bd_num) in axienet_start_xmit()
1060 cur_p = &lp->tx_bd_v[new_tail_ptr]; in axienet_start_xmit()
1061 frag = &skb_shinfo(skb)->frags[ii]; in axienet_start_xmit()
1062 phys = dma_map_single(lp->dev, in axienet_start_xmit()
1066 if (unlikely(dma_mapping_error(lp->dev, phys))) { in axienet_start_xmit()
1069 ndev->stats.tx_dropped++; in axienet_start_xmit()
1076 cur_p->cntrl = skb_frag_size(frag); in axienet_start_xmit()
1079 cur_p->cntrl |= XAXIDMA_BD_CTRL_TXEOF_MASK; in axienet_start_xmit()
1080 cur_p->skb = skb; in axienet_start_xmit()
1082 tail_p = lp->tx_bd_p + sizeof(*lp->tx_bd_v) * new_tail_ptr; in axienet_start_xmit()
1083 if (++new_tail_ptr >= lp->tx_bd_num) in axienet_start_xmit()
1085 WRITE_ONCE(lp->tx_bd_tail, new_tail_ptr); in axienet_start_xmit()
1097 /* Space might have just been freed - check again */ in axienet_start_xmit()
1106 * axienet_dma_rx_cb - DMA engine callback for RX channel.
1120 skbuf_dma = axienet_get_rx_desc(lp, lp->rx_ring_tail++); in axienet_dma_rx_cb()
1121 skb = skbuf_dma->skb; in axienet_dma_rx_cb()
1122 app_metadata = dmaengine_desc_get_metadata_ptr(skbuf_dma->desc, &meta_len, in axienet_dma_rx_cb()
1124 dma_unmap_single(lp->dev, skbuf_dma->dma_address, lp->max_frm_size, in axienet_dma_rx_cb()
1129 skb->protocol = eth_type_trans(skb, lp->ndev); in axienet_dma_rx_cb()
1130 skb->ip_summed = CHECKSUM_NONE; in axienet_dma_rx_cb()
1133 u64_stats_update_begin(&lp->rx_stat_sync); in axienet_dma_rx_cb()
1134 u64_stats_add(&lp->rx_packets, 1); in axienet_dma_rx_cb()
1135 u64_stats_add(&lp->rx_bytes, rx_len); in axienet_dma_rx_cb()
1136 u64_stats_update_end(&lp->rx_stat_sync); in axienet_dma_rx_cb()
1137 axienet_rx_submit_desc(lp->ndev); in axienet_dma_rx_cb()
1138 dma_async_issue_pending(lp->rx_chan); in axienet_dma_rx_cb()
1142 * axienet_rx_poll - Triggered by RX ISR to complete the BD processing.
1159 cur_p = &lp->rx_bd_v[lp->rx_bd_ci]; in axienet_rx_poll()
1161 while (packets < budget && (cur_p->status & XAXIDMA_BD_STS_COMPLETE_MASK)) { in axienet_rx_poll()
1167 skb = cur_p->skb; in axienet_rx_poll()
1168 cur_p->skb = NULL; in axienet_rx_poll()
1176 length = cur_p->app4 & 0x0000FFFF; in axienet_rx_poll()
1179 dma_unmap_single(lp->dev, phys, lp->max_frm_size, in axienet_rx_poll()
1183 skb->protocol = eth_type_trans(skb, lp->ndev); in axienet_rx_poll()
1185 skb->ip_summed = CHECKSUM_NONE; in axienet_rx_poll()
1188 if (lp->features & XAE_FEATURE_FULL_RX_CSUM) { in axienet_rx_poll()
1189 csumstatus = (cur_p->app2 & in axienet_rx_poll()
1193 skb->ip_summed = CHECKSUM_UNNECESSARY; in axienet_rx_poll()
1195 } else if (lp->features & XAE_FEATURE_PARTIAL_RX_CSUM) { in axienet_rx_poll()
1196 skb->csum = be32_to_cpu(cur_p->app3 & 0xFFFF); in axienet_rx_poll()
1197 skb->ip_summed = CHECKSUM_COMPLETE; in axienet_rx_poll()
1206 new_skb = napi_alloc_skb(napi, lp->max_frm_size); in axienet_rx_poll()
1210 phys = dma_map_single(lp->dev, new_skb->data, in axienet_rx_poll()
1211 lp->max_frm_size, in axienet_rx_poll()
1213 if (unlikely(dma_mapping_error(lp->dev, phys))) { in axienet_rx_poll()
1215 netdev_err(lp->ndev, "RX DMA mapping error\n"); in axienet_rx_poll()
1221 cur_p->cntrl = lp->max_frm_size; in axienet_rx_poll()
1222 cur_p->status = 0; in axienet_rx_poll()
1223 cur_p->skb = new_skb; in axienet_rx_poll()
1228 tail_p = lp->rx_bd_p + sizeof(*lp->rx_bd_v) * lp->rx_bd_ci; in axienet_rx_poll()
1230 if (++lp->rx_bd_ci >= lp->rx_bd_num) in axienet_rx_poll()
1231 lp->rx_bd_ci = 0; in axienet_rx_poll()
1232 cur_p = &lp->rx_bd_v[lp->rx_bd_ci]; in axienet_rx_poll()
1235 u64_stats_update_begin(&lp->rx_stat_sync); in axienet_rx_poll()
1236 u64_stats_add(&lp->rx_packets, packets); in axienet_rx_poll()
1237 u64_stats_add(&lp->rx_bytes, size); in axienet_rx_poll()
1238 u64_stats_update_end(&lp->rx_stat_sync); in axienet_rx_poll()
1244 /* Re-enable RX completion interrupts. This should in axienet_rx_poll()
1248 axienet_dma_out32(lp, XAXIDMA_RX_CR_OFFSET, lp->rx_dma_cr); in axienet_rx_poll()
1254 * axienet_tx_irq - Tx Done Isr.
1279 (lp->tx_bd_v[lp->tx_bd_ci]).phys_msb, in axienet_tx_irq()
1280 (lp->tx_bd_v[lp->tx_bd_ci]).phys); in axienet_tx_irq()
1281 schedule_work(&lp->dma_err_task); in axienet_tx_irq()
1286 u32 cr = lp->tx_dma_cr; in axienet_tx_irq()
1289 if (napi_schedule_prep(&lp->napi_tx)) { in axienet_tx_irq()
1291 __napi_schedule(&lp->napi_tx); in axienet_tx_irq()
1299 * axienet_rx_irq - Rx Isr.
1324 (lp->rx_bd_v[lp->rx_bd_ci]).phys_msb, in axienet_rx_irq()
1325 (lp->rx_bd_v[lp->rx_bd_ci]).phys); in axienet_rx_irq()
1326 schedule_work(&lp->dma_err_task); in axienet_rx_irq()
1331 u32 cr = lp->rx_dma_cr; in axienet_rx_irq()
1334 if (napi_schedule_prep(&lp->napi_rx)) { in axienet_rx_irq()
1336 __napi_schedule(&lp->napi_rx); in axienet_rx_irq()
1344 * axienet_eth_irq - Ethernet core Isr.
1363 ndev->stats.rx_missed_errors++; in axienet_eth_irq()
1366 ndev->stats.rx_dropped++; in axienet_eth_irq()
1375 * axienet_rx_submit_desc - Submit the rx descriptors to dmaengine.
1390 skbuf_dma = axienet_get_rx_desc(lp, lp->rx_ring_head); in axienet_rx_submit_desc()
1394 lp->rx_ring_head++; in axienet_rx_submit_desc()
1395 skb = netdev_alloc_skb(ndev, lp->max_frm_size); in axienet_rx_submit_desc()
1399 sg_init_table(skbuf_dma->sgl, 1); in axienet_rx_submit_desc()
1400 addr = dma_map_single(lp->dev, skb->data, lp->max_frm_size, DMA_FROM_DEVICE); in axienet_rx_submit_desc()
1401 if (unlikely(dma_mapping_error(lp->dev, addr))) { in axienet_rx_submit_desc()
1406 sg_dma_address(skbuf_dma->sgl) = addr; in axienet_rx_submit_desc()
1407 sg_dma_len(skbuf_dma->sgl) = lp->max_frm_size; in axienet_rx_submit_desc()
1408 dma_rx_desc = dmaengine_prep_slave_sg(lp->rx_chan, skbuf_dma->sgl, in axienet_rx_submit_desc()
1414 skbuf_dma->skb = skb; in axienet_rx_submit_desc()
1415 skbuf_dma->dma_address = sg_dma_address(skbuf_dma->sgl); in axienet_rx_submit_desc()
1416 skbuf_dma->desc = dma_rx_desc; in axienet_rx_submit_desc()
1417 dma_rx_desc->callback_param = lp; in axienet_rx_submit_desc()
1418 dma_rx_desc->callback_result = axienet_dma_rx_cb; in axienet_rx_submit_desc()
1424 dma_unmap_single(lp->dev, addr, lp->max_frm_size, DMA_FROM_DEVICE); in axienet_rx_submit_desc()
1430 * axienet_init_dmaengine - init the dmaengine code.
1434 * non-zero error value on failure
1444 lp->tx_chan = dma_request_chan(lp->dev, "tx_chan0"); in axienet_init_dmaengine()
1445 if (IS_ERR(lp->tx_chan)) { in axienet_init_dmaengine()
1446 dev_err(lp->dev, "No Ethernet DMA (TX) channel found\n"); in axienet_init_dmaengine()
1447 return PTR_ERR(lp->tx_chan); in axienet_init_dmaengine()
1450 lp->rx_chan = dma_request_chan(lp->dev, "rx_chan0"); in axienet_init_dmaengine()
1451 if (IS_ERR(lp->rx_chan)) { in axienet_init_dmaengine()
1452 ret = PTR_ERR(lp->rx_chan); in axienet_init_dmaengine()
1453 dev_err(lp->dev, "No Ethernet DMA (RX) channel found\n"); in axienet_init_dmaengine()
1457 lp->tx_ring_tail = 0; in axienet_init_dmaengine()
1458 lp->tx_ring_head = 0; in axienet_init_dmaengine()
1459 lp->rx_ring_tail = 0; in axienet_init_dmaengine()
1460 lp->rx_ring_head = 0; in axienet_init_dmaengine()
1461 lp->tx_skb_ring = kcalloc(TX_BD_NUM_MAX, sizeof(*lp->tx_skb_ring), in axienet_init_dmaengine()
1463 if (!lp->tx_skb_ring) { in axienet_init_dmaengine()
1464 ret = -ENOMEM; in axienet_init_dmaengine()
1470 ret = -ENOMEM; in axienet_init_dmaengine()
1473 lp->tx_skb_ring[i] = skbuf_dma; in axienet_init_dmaengine()
1476 lp->rx_skb_ring = kcalloc(RX_BUF_NUM_DEFAULT, sizeof(*lp->rx_skb_ring), in axienet_init_dmaengine()
1478 if (!lp->rx_skb_ring) { in axienet_init_dmaengine()
1479 ret = -ENOMEM; in axienet_init_dmaengine()
1485 ret = -ENOMEM; in axienet_init_dmaengine()
1488 lp->rx_skb_ring[i] = skbuf_dma; in axienet_init_dmaengine()
1493 dma_async_issue_pending(lp->rx_chan); in axienet_init_dmaengine()
1499 kfree(lp->rx_skb_ring[i]); in axienet_init_dmaengine()
1500 kfree(lp->rx_skb_ring); in axienet_init_dmaengine()
1503 kfree(lp->tx_skb_ring[i]); in axienet_init_dmaengine()
1504 kfree(lp->tx_skb_ring); in axienet_init_dmaengine()
1506 dma_release_channel(lp->rx_chan); in axienet_init_dmaengine()
1508 dma_release_channel(lp->tx_chan); in axienet_init_dmaengine()
1513 * axienet_init_legacy_dma - init the dma legacy code.
1517 * non-zero error value on failure
1529 lp->stopping = false; in axienet_init_legacy_dma()
1530 INIT_WORK(&lp->dma_err_task, axienet_dma_err_handler); in axienet_init_legacy_dma()
1532 napi_enable(&lp->napi_rx); in axienet_init_legacy_dma()
1533 napi_enable(&lp->napi_tx); in axienet_init_legacy_dma()
1536 ret = request_irq(lp->tx_irq, axienet_tx_irq, IRQF_SHARED, in axienet_init_legacy_dma()
1537 ndev->name, ndev); in axienet_init_legacy_dma()
1541 ret = request_irq(lp->rx_irq, axienet_rx_irq, IRQF_SHARED, in axienet_init_legacy_dma()
1542 ndev->name, ndev); in axienet_init_legacy_dma()
1546 if (lp->eth_irq > 0) { in axienet_init_legacy_dma()
1547 ret = request_irq(lp->eth_irq, axienet_eth_irq, IRQF_SHARED, in axienet_init_legacy_dma()
1548 ndev->name, ndev); in axienet_init_legacy_dma()
1556 free_irq(lp->rx_irq, ndev); in axienet_init_legacy_dma()
1558 free_irq(lp->tx_irq, ndev); in axienet_init_legacy_dma()
1560 napi_disable(&lp->napi_tx); in axienet_init_legacy_dma()
1561 napi_disable(&lp->napi_rx); in axienet_init_legacy_dma()
1562 cancel_work_sync(&lp->dma_err_task); in axienet_init_legacy_dma()
1563 dev_err(lp->dev, "request_irq() failed\n"); in axienet_init_legacy_dma()
1568 * axienet_open - Driver open routine.
1572 * non-zero error value on failure
1593 ret = phylink_of_phy_connect(lp->phylink, lp->dev->of_node, 0); in axienet_open()
1595 dev_err(lp->dev, "phylink_of_phy_connect() failed: %d\n", ret); in axienet_open()
1599 phylink_start(lp->phylink); in axienet_open()
1602 schedule_delayed_work(&lp->stats_work, 0); in axienet_open()
1604 if (lp->use_dmaengine) { in axienet_open()
1606 if (lp->eth_irq > 0) { in axienet_open()
1607 ret = request_irq(lp->eth_irq, axienet_eth_irq, IRQF_SHARED, in axienet_open()
1608 ndev->name, ndev); in axienet_open()
1625 if (lp->eth_irq > 0) in axienet_open()
1626 free_irq(lp->eth_irq, ndev); in axienet_open()
1628 cancel_delayed_work_sync(&lp->stats_work); in axienet_open()
1629 phylink_stop(lp->phylink); in axienet_open()
1630 phylink_disconnect_phy(lp->phylink); in axienet_open()
1635 * axienet_stop - Driver stop routine.
1649 if (!lp->use_dmaengine) { in axienet_stop()
1650 WRITE_ONCE(lp->stopping, true); in axienet_stop()
1651 flush_work(&lp->dma_err_task); in axienet_stop()
1653 napi_disable(&lp->napi_tx); in axienet_stop()
1654 napi_disable(&lp->napi_rx); in axienet_stop()
1657 cancel_delayed_work_sync(&lp->stats_work); in axienet_stop()
1659 phylink_stop(lp->phylink); in axienet_stop()
1660 phylink_disconnect_phy(lp->phylink); in axienet_stop()
1662 axienet_setoptions(ndev, lp->options & in axienet_stop()
1665 if (!lp->use_dmaengine) { in axienet_stop()
1667 cancel_work_sync(&lp->dma_err_task); in axienet_stop()
1668 free_irq(lp->tx_irq, ndev); in axienet_stop()
1669 free_irq(lp->rx_irq, ndev); in axienet_stop()
1672 dmaengine_terminate_sync(lp->tx_chan); in axienet_stop()
1673 dmaengine_synchronize(lp->tx_chan); in axienet_stop()
1674 dmaengine_terminate_sync(lp->rx_chan); in axienet_stop()
1675 dmaengine_synchronize(lp->rx_chan); in axienet_stop()
1678 kfree(lp->tx_skb_ring[i]); in axienet_stop()
1679 kfree(lp->tx_skb_ring); in axienet_stop()
1681 kfree(lp->rx_skb_ring[i]); in axienet_stop()
1682 kfree(lp->rx_skb_ring); in axienet_stop()
1684 dma_release_channel(lp->rx_chan); in axienet_stop()
1685 dma_release_channel(lp->tx_chan); in axienet_stop()
1690 if (lp->eth_irq > 0) in axienet_stop()
1691 free_irq(lp->eth_irq, ndev); in axienet_stop()
1696 * axienet_change_mtu - Driver change mtu routine.
1711 return -EBUSY; in axienet_change_mtu()
1714 XAE_TRL_SIZE) > lp->rxmem) in axienet_change_mtu()
1715 return -EINVAL; in axienet_change_mtu()
1717 WRITE_ONCE(ndev->mtu, new_mtu); in axienet_change_mtu()
1724 * axienet_poll_controller - Axi Ethernet poll mechanism.
1734 disable_irq(lp->tx_irq); in axienet_poll_controller()
1735 disable_irq(lp->rx_irq); in axienet_poll_controller()
1736 axienet_rx_irq(lp->tx_irq, ndev); in axienet_poll_controller()
1737 axienet_tx_irq(lp->rx_irq, ndev); in axienet_poll_controller()
1738 enable_irq(lp->tx_irq); in axienet_poll_controller()
1739 enable_irq(lp->rx_irq); in axienet_poll_controller()
1748 return -EINVAL; in axienet_ioctl()
1750 return phylink_mii_ioctl(lp->phylink, rq, cmd); in axienet_ioctl()
1759 netdev_stats_to_stats64(stats, &dev->stats); in axienet_get_stats64()
1762 start = u64_stats_fetch_begin(&lp->rx_stat_sync); in axienet_get_stats64()
1763 stats->rx_packets = u64_stats_read(&lp->rx_packets); in axienet_get_stats64()
1764 stats->rx_bytes = u64_stats_read(&lp->rx_bytes); in axienet_get_stats64()
1765 } while (u64_stats_fetch_retry(&lp->rx_stat_sync, start)); in axienet_get_stats64()
1768 start = u64_stats_fetch_begin(&lp->tx_stat_sync); in axienet_get_stats64()
1769 stats->tx_packets = u64_stats_read(&lp->tx_packets); in axienet_get_stats64()
1770 stats->tx_bytes = u64_stats_read(&lp->tx_bytes); in axienet_get_stats64()
1771 } while (u64_stats_fetch_retry(&lp->tx_stat_sync, start)); in axienet_get_stats64()
1773 if (!(lp->features & XAE_FEATURE_STATS)) in axienet_get_stats64()
1777 start = read_seqcount_begin(&lp->hw_stats_seqcount); in axienet_get_stats64()
1778 stats->rx_length_errors = in axienet_get_stats64()
1780 stats->rx_crc_errors = axienet_stat(lp, STAT_RX_FCS_ERRORS); in axienet_get_stats64()
1781 stats->rx_frame_errors = in axienet_get_stats64()
1783 stats->rx_errors = axienet_stat(lp, STAT_UNDERSIZE_FRAMES) + in axienet_get_stats64()
1785 stats->rx_length_errors + in axienet_get_stats64()
1786 stats->rx_crc_errors + in axienet_get_stats64()
1787 stats->rx_frame_errors; in axienet_get_stats64()
1788 stats->multicast = axienet_stat(lp, STAT_RX_MULTICAST_FRAMES); in axienet_get_stats64()
1790 stats->tx_aborted_errors = in axienet_get_stats64()
1792 stats->tx_fifo_errors = in axienet_get_stats64()
1794 stats->tx_window_errors = in axienet_get_stats64()
1796 stats->tx_errors = axienet_stat(lp, STAT_TX_EXCESS_DEFERRAL) + in axienet_get_stats64()
1797 stats->tx_aborted_errors + in axienet_get_stats64()
1798 stats->tx_fifo_errors + in axienet_get_stats64()
1799 stats->tx_window_errors; in axienet_get_stats64()
1800 } while (read_seqcount_retry(&lp->hw_stats_seqcount, start)); in axienet_get_stats64()
1831 * axienet_ethtools_get_drvinfo - Get various Axi Ethernet driver information.
1836 * Issue "ethtool -i ethX" under linux prompt to execute this function.
1841 strscpy(ed->driver, DRIVER_NAME, sizeof(ed->driver)); in axienet_ethtools_get_drvinfo()
1842 strscpy(ed->version, DRIVER_VERSION, sizeof(ed->version)); in axienet_ethtools_get_drvinfo()
1846 * axienet_ethtools_get_regs_len - Get the total regs length present in the
1861 * axienet_ethtools_get_regs - Dump the contents of all registers present
1868 * Issue "ethtool -d ethX" to execute this function.
1877 regs->version = 0; in axienet_ethtools_get_regs()
1878 regs->len = len; in axienet_ethtools_get_regs()
1909 if (!lp->use_dmaengine) { in axienet_ethtools_get_regs()
1929 ering->rx_max_pending = RX_BD_NUM_MAX; in axienet_ethtools_get_ringparam()
1930 ering->rx_mini_max_pending = 0; in axienet_ethtools_get_ringparam()
1931 ering->rx_jumbo_max_pending = 0; in axienet_ethtools_get_ringparam()
1932 ering->tx_max_pending = TX_BD_NUM_MAX; in axienet_ethtools_get_ringparam()
1933 ering->rx_pending = lp->rx_bd_num; in axienet_ethtools_get_ringparam()
1934 ering->rx_mini_pending = 0; in axienet_ethtools_get_ringparam()
1935 ering->rx_jumbo_pending = 0; in axienet_ethtools_get_ringparam()
1936 ering->tx_pending = lp->tx_bd_num; in axienet_ethtools_get_ringparam()
1947 if (ering->rx_pending > RX_BD_NUM_MAX || in axienet_ethtools_set_ringparam()
1948 ering->rx_mini_pending || in axienet_ethtools_set_ringparam()
1949 ering->rx_jumbo_pending || in axienet_ethtools_set_ringparam()
1950 ering->tx_pending < TX_BD_NUM_MIN || in axienet_ethtools_set_ringparam()
1951 ering->tx_pending > TX_BD_NUM_MAX) in axienet_ethtools_set_ringparam()
1952 return -EINVAL; in axienet_ethtools_set_ringparam()
1955 return -EBUSY; in axienet_ethtools_set_ringparam()
1957 lp->rx_bd_num = ering->rx_pending; in axienet_ethtools_set_ringparam()
1958 lp->tx_bd_num = ering->tx_pending; in axienet_ethtools_set_ringparam()
1963 * axienet_ethtools_get_pauseparam - Get the pause parameter setting for
1969 * setting. Issue "ethtool -a ethX" to execute this function.
1977 phylink_ethtool_get_pauseparam(lp->phylink, epauseparm); in axienet_ethtools_get_pauseparam()
1981 * axienet_ethtools_set_pauseparam - Set device pause parameter(flow control)
1987 * paths. Issue "ethtool -A ethX tx on|off" under linux prompt to execute this
1990 * Return: 0 on success, -EFAULT if device is running
1998 return phylink_ethtool_set_pauseparam(lp->phylink, epauseparm); in axienet_ethtools_set_pauseparam()
2002 * axienet_ethtools_get_coalesce - Get DMA interrupt coalescing count.
2009 * count on Tx and Rx paths. Issue "ethtool -c ethX" under linux prompt to
2022 ecoalesce->rx_max_coalesced_frames = lp->coalesce_count_rx; in axienet_ethtools_get_coalesce()
2023 ecoalesce->rx_coalesce_usecs = lp->coalesce_usec_rx; in axienet_ethtools_get_coalesce()
2024 ecoalesce->tx_max_coalesced_frames = lp->coalesce_count_tx; in axienet_ethtools_get_coalesce()
2025 ecoalesce->tx_coalesce_usecs = lp->coalesce_usec_tx; in axienet_ethtools_get_coalesce()
2030 * axienet_ethtools_set_coalesce - Set DMA interrupt coalescing count.
2037 * count on Tx and Rx paths. Issue "ethtool -C ethX rx-frames 5" under linux
2040 * Return: 0, on success, Non-zero error value on failure.
2053 return -EBUSY; in axienet_ethtools_set_coalesce()
2056 if (ecoalesce->rx_max_coalesced_frames > 255 || in axienet_ethtools_set_coalesce()
2057 ecoalesce->tx_max_coalesced_frames > 255) { in axienet_ethtools_set_coalesce()
2059 return -EINVAL; in axienet_ethtools_set_coalesce()
2062 if (!ecoalesce->rx_max_coalesced_frames || in axienet_ethtools_set_coalesce()
2063 !ecoalesce->tx_max_coalesced_frames) { in axienet_ethtools_set_coalesce()
2064 NL_SET_ERR_MSG(extack, "frames must be non-zero"); in axienet_ethtools_set_coalesce()
2065 return -EINVAL; in axienet_ethtools_set_coalesce()
2068 if ((ecoalesce->rx_max_coalesced_frames > 1 && in axienet_ethtools_set_coalesce()
2069 !ecoalesce->rx_coalesce_usecs) || in axienet_ethtools_set_coalesce()
2070 (ecoalesce->tx_max_coalesced_frames > 1 && in axienet_ethtools_set_coalesce()
2071 !ecoalesce->tx_coalesce_usecs)) { in axienet_ethtools_set_coalesce()
2073 "usecs must be non-zero when frames is greater than one"); in axienet_ethtools_set_coalesce()
2074 return -EINVAL; in axienet_ethtools_set_coalesce()
2077 lp->coalesce_count_rx = ecoalesce->rx_max_coalesced_frames; in axienet_ethtools_set_coalesce()
2078 lp->coalesce_usec_rx = ecoalesce->rx_coalesce_usecs; in axienet_ethtools_set_coalesce()
2079 lp->coalesce_count_tx = ecoalesce->tx_max_coalesced_frames; in axienet_ethtools_set_coalesce()
2080 lp->coalesce_usec_tx = ecoalesce->tx_coalesce_usecs; in axienet_ethtools_set_coalesce()
2091 return phylink_ethtool_ksettings_get(lp->phylink, cmd); in axienet_ethtools_get_link_ksettings()
2100 return phylink_ethtool_ksettings_set(lp->phylink, cmd); in axienet_ethtools_set_link_ksettings()
2107 return phylink_ethtool_nway_reset(lp->phylink); in axienet_ethtools_nway_reset()
2118 start = read_seqcount_begin(&lp->hw_stats_seqcount); in axienet_ethtools_get_ethtool_stats()
2128 } while (read_seqcount_retry(&lp->hw_stats_seqcount, start)); in axienet_ethtools_get_ethtool_stats()
2159 if (lp->features & XAE_FEATURE_STATS) in axienet_ethtools_get_sset_count()
2163 return -EOPNOTSUPP; in axienet_ethtools_get_sset_count()
2174 if (!(lp->features & XAE_FEATURE_STATS)) in axienet_ethtools_get_pause_stats()
2178 start = read_seqcount_begin(&lp->hw_stats_seqcount); in axienet_ethtools_get_pause_stats()
2179 pause_stats->tx_pause_frames = in axienet_ethtools_get_pause_stats()
2181 pause_stats->rx_pause_frames = in axienet_ethtools_get_pause_stats()
2183 } while (read_seqcount_retry(&lp->hw_stats_seqcount, start)); in axienet_ethtools_get_pause_stats()
2193 if (!(lp->features & XAE_FEATURE_STATS)) in axienet_ethtool_get_eth_mac_stats()
2197 start = read_seqcount_begin(&lp->hw_stats_seqcount); in axienet_ethtool_get_eth_mac_stats()
2198 mac_stats->FramesTransmittedOK = in axienet_ethtool_get_eth_mac_stats()
2200 mac_stats->SingleCollisionFrames = in axienet_ethtool_get_eth_mac_stats()
2202 mac_stats->MultipleCollisionFrames = in axienet_ethtool_get_eth_mac_stats()
2204 mac_stats->FramesReceivedOK = in axienet_ethtool_get_eth_mac_stats()
2206 mac_stats->FrameCheckSequenceErrors = in axienet_ethtool_get_eth_mac_stats()
2208 mac_stats->AlignmentErrors = in axienet_ethtool_get_eth_mac_stats()
2210 mac_stats->FramesWithDeferredXmissions = in axienet_ethtool_get_eth_mac_stats()
2212 mac_stats->LateCollisions = in axienet_ethtool_get_eth_mac_stats()
2214 mac_stats->FramesAbortedDueToXSColls = in axienet_ethtool_get_eth_mac_stats()
2216 mac_stats->MulticastFramesXmittedOK = in axienet_ethtool_get_eth_mac_stats()
2218 mac_stats->BroadcastFramesXmittedOK = in axienet_ethtool_get_eth_mac_stats()
2220 mac_stats->FramesWithExcessiveDeferral = in axienet_ethtool_get_eth_mac_stats()
2222 mac_stats->MulticastFramesReceivedOK = in axienet_ethtool_get_eth_mac_stats()
2224 mac_stats->BroadcastFramesReceivedOK = in axienet_ethtool_get_eth_mac_stats()
2226 mac_stats->InRangeLengthErrors = in axienet_ethtool_get_eth_mac_stats()
2228 } while (read_seqcount_retry(&lp->hw_stats_seqcount, start)); in axienet_ethtool_get_eth_mac_stats()
2238 if (!(lp->features & XAE_FEATURE_STATS)) in axienet_ethtool_get_eth_ctrl_stats()
2242 start = read_seqcount_begin(&lp->hw_stats_seqcount); in axienet_ethtool_get_eth_ctrl_stats()
2243 ctrl_stats->MACControlFramesTransmitted = in axienet_ethtool_get_eth_ctrl_stats()
2245 ctrl_stats->MACControlFramesReceived = in axienet_ethtool_get_eth_ctrl_stats()
2247 ctrl_stats->UnsupportedOpcodesReceived = in axienet_ethtool_get_eth_ctrl_stats()
2249 } while (read_seqcount_retry(&lp->hw_stats_seqcount, start)); in axienet_ethtool_get_eth_ctrl_stats()
2271 if (!(lp->features & XAE_FEATURE_STATS)) in axienet_ethtool_get_rmon_stats()
2275 start = read_seqcount_begin(&lp->hw_stats_seqcount); in axienet_ethtool_get_rmon_stats()
2276 rmon_stats->undersize_pkts = in axienet_ethtool_get_rmon_stats()
2278 rmon_stats->oversize_pkts = in axienet_ethtool_get_rmon_stats()
2280 rmon_stats->fragments = in axienet_ethtool_get_rmon_stats()
2283 rmon_stats->hist[0] = in axienet_ethtool_get_rmon_stats()
2285 rmon_stats->hist[1] = in axienet_ethtool_get_rmon_stats()
2287 rmon_stats->hist[2] = in axienet_ethtool_get_rmon_stats()
2289 rmon_stats->hist[3] = in axienet_ethtool_get_rmon_stats()
2291 rmon_stats->hist[4] = in axienet_ethtool_get_rmon_stats()
2293 rmon_stats->hist[5] = in axienet_ethtool_get_rmon_stats()
2295 rmon_stats->hist[6] = in axienet_ethtool_get_rmon_stats()
2296 rmon_stats->oversize_pkts; in axienet_ethtool_get_rmon_stats()
2298 rmon_stats->hist_tx[0] = in axienet_ethtool_get_rmon_stats()
2300 rmon_stats->hist_tx[1] = in axienet_ethtool_get_rmon_stats()
2302 rmon_stats->hist_tx[2] = in axienet_ethtool_get_rmon_stats()
2304 rmon_stats->hist_tx[3] = in axienet_ethtool_get_rmon_stats()
2306 rmon_stats->hist_tx[4] = in axienet_ethtool_get_rmon_stats()
2308 rmon_stats->hist_tx[5] = in axienet_ethtool_get_rmon_stats()
2310 rmon_stats->hist_tx[6] = in axienet_ethtool_get_rmon_stats()
2312 } while (read_seqcount_retry(&lp->hw_stats_seqcount, start)); in axienet_ethtool_get_rmon_stats()
2351 struct mdio_device *pcs_phy = pcs_to_axienet_local(pcs)->pcs_phy; in axienet_pcs_get_state()
2358 struct mdio_device *pcs_phy = pcs_to_axienet_local(pcs)->pcs_phy; in axienet_pcs_an_restart()
2368 struct mdio_device *pcs_phy = pcs_to_axienet_local(pcs)->pcs_phy; in axienet_pcs_config()
2369 struct net_device *ndev = pcs_to_axienet_local(pcs)->ndev; in axienet_pcs_config()
2373 if (lp->switch_x_sgmii) { in axienet_pcs_config()
2402 struct net_device *ndev = to_net_dev(config->dev); in axienet_mac_select_pcs()
2407 return &lp->pcs; in axienet_mac_select_pcs()
2431 struct net_device *ndev = to_net_dev(config->dev); in axienet_mac_link_up()
2449 dev_err(&ndev->dev, in axienet_mac_link_up()
2476 * axienet_dma_err_handler - Work queue task for Axi DMA Error
2489 struct net_device *ndev = lp->ndev; in axienet_dma_err_handler()
2492 if (READ_ONCE(lp->stopping)) in axienet_dma_err_handler()
2495 napi_disable(&lp->napi_tx); in axienet_dma_err_handler()
2496 napi_disable(&lp->napi_rx); in axienet_dma_err_handler()
2498 axienet_setoptions(ndev, lp->options & in axienet_dma_err_handler()
2503 for (i = 0; i < lp->tx_bd_num; i++) { in axienet_dma_err_handler()
2504 cur_p = &lp->tx_bd_v[i]; in axienet_dma_err_handler()
2505 if (cur_p->cntrl) { in axienet_dma_err_handler()
2508 dma_unmap_single(lp->dev, addr, in axienet_dma_err_handler()
2509 (cur_p->cntrl & in axienet_dma_err_handler()
2513 if (cur_p->skb) in axienet_dma_err_handler()
2514 dev_kfree_skb_irq(cur_p->skb); in axienet_dma_err_handler()
2515 cur_p->phys = 0; in axienet_dma_err_handler()
2516 cur_p->phys_msb = 0; in axienet_dma_err_handler()
2517 cur_p->cntrl = 0; in axienet_dma_err_handler()
2518 cur_p->status = 0; in axienet_dma_err_handler()
2519 cur_p->app0 = 0; in axienet_dma_err_handler()
2520 cur_p->app1 = 0; in axienet_dma_err_handler()
2521 cur_p->app2 = 0; in axienet_dma_err_handler()
2522 cur_p->app3 = 0; in axienet_dma_err_handler()
2523 cur_p->app4 = 0; in axienet_dma_err_handler()
2524 cur_p->skb = NULL; in axienet_dma_err_handler()
2527 for (i = 0; i < lp->rx_bd_num; i++) { in axienet_dma_err_handler()
2528 cur_p = &lp->rx_bd_v[i]; in axienet_dma_err_handler()
2529 cur_p->status = 0; in axienet_dma_err_handler()
2530 cur_p->app0 = 0; in axienet_dma_err_handler()
2531 cur_p->app1 = 0; in axienet_dma_err_handler()
2532 cur_p->app2 = 0; in axienet_dma_err_handler()
2533 cur_p->app3 = 0; in axienet_dma_err_handler()
2534 cur_p->app4 = 0; in axienet_dma_err_handler()
2537 lp->tx_bd_ci = 0; in axienet_dma_err_handler()
2538 lp->tx_bd_tail = 0; in axienet_dma_err_handler()
2539 lp->rx_bd_ci = 0; in axienet_dma_err_handler()
2550 axienet_iow(lp, XAE_IE_OFFSET, lp->eth_irq > 0 ? in axienet_dma_err_handler()
2557 axienet_setoptions(ndev, lp->options & in axienet_dma_err_handler()
2561 napi_enable(&lp->napi_rx); in axienet_dma_err_handler()
2562 napi_enable(&lp->napi_tx); in axienet_dma_err_handler()
2563 axienet_setoptions(ndev, lp->options); in axienet_dma_err_handler()
2567 * axienet_probe - Axi Ethernet probe function.
2571 * Non-zero error value on failure.
2591 return -ENOMEM; in axienet_probe()
2595 SET_NETDEV_DEV(ndev, &pdev->dev); in axienet_probe()
2596 ndev->features = NETIF_F_SG; in axienet_probe()
2597 ndev->ethtool_ops = &axienet_ethtool_ops; in axienet_probe()
2599 /* MTU range: 64 - 9000 */ in axienet_probe()
2600 ndev->min_mtu = 64; in axienet_probe()
2601 ndev->max_mtu = XAE_JUMBO_MTU; in axienet_probe()
2604 lp->ndev = ndev; in axienet_probe()
2605 lp->dev = &pdev->dev; in axienet_probe()
2606 lp->options = XAE_OPTION_DEFAULTS; in axienet_probe()
2607 lp->rx_bd_num = RX_BD_NUM_DEFAULT; in axienet_probe()
2608 lp->tx_bd_num = TX_BD_NUM_DEFAULT; in axienet_probe()
2610 u64_stats_init(&lp->rx_stat_sync); in axienet_probe()
2611 u64_stats_init(&lp->tx_stat_sync); in axienet_probe()
2613 mutex_init(&lp->stats_lock); in axienet_probe()
2614 seqcount_mutex_init(&lp->hw_stats_seqcount, &lp->stats_lock); in axienet_probe()
2615 INIT_DEFERRABLE_WORK(&lp->stats_work, axienet_refresh_stats); in axienet_probe()
2617 lp->axi_clk = devm_clk_get_optional(&pdev->dev, "s_axi_lite_clk"); in axienet_probe()
2618 if (!lp->axi_clk) { in axienet_probe()
2622 lp->axi_clk = devm_clk_get_optional(&pdev->dev, NULL); in axienet_probe()
2624 if (IS_ERR(lp->axi_clk)) { in axienet_probe()
2625 ret = PTR_ERR(lp->axi_clk); in axienet_probe()
2628 ret = clk_prepare_enable(lp->axi_clk); in axienet_probe()
2630 dev_err(&pdev->dev, "Unable to enable AXI clock: %d\n", ret); in axienet_probe()
2634 lp->misc_clks[0].id = "axis_clk"; in axienet_probe()
2635 lp->misc_clks[1].id = "ref_clk"; in axienet_probe()
2636 lp->misc_clks[2].id = "mgt_clk"; in axienet_probe()
2638 ret = devm_clk_bulk_get_optional(&pdev->dev, XAE_NUM_MISC_CLOCKS, lp->misc_clks); in axienet_probe()
2642 ret = clk_bulk_prepare_enable(XAE_NUM_MISC_CLOCKS, lp->misc_clks); in axienet_probe()
2647 lp->regs = devm_platform_get_and_ioremap_resource(pdev, 0, ðres); in axienet_probe()
2648 if (IS_ERR(lp->regs)) { in axienet_probe()
2649 ret = PTR_ERR(lp->regs); in axienet_probe()
2652 lp->regs_start = ethres->start; in axienet_probe()
2655 lp->features = 0; in axienet_probe()
2658 lp->features |= XAE_FEATURE_STATS; in axienet_probe()
2660 ret = of_property_read_u32(pdev->dev.of_node, "xlnx,txcsum", &value); in axienet_probe()
2664 lp->features |= XAE_FEATURE_PARTIAL_TX_CSUM; in axienet_probe()
2666 ndev->features |= NETIF_F_HW_CSUM; in axienet_probe()
2669 lp->features |= XAE_FEATURE_FULL_TX_CSUM; in axienet_probe()
2671 ndev->features |= NETIF_F_IP_CSUM; in axienet_probe()
2675 ret = of_property_read_u32(pdev->dev.of_node, "xlnx,rxcsum", &value); in axienet_probe()
2679 lp->features |= XAE_FEATURE_PARTIAL_RX_CSUM; in axienet_probe()
2680 ndev->features |= NETIF_F_RXCSUM; in axienet_probe()
2683 lp->features |= XAE_FEATURE_FULL_RX_CSUM; in axienet_probe()
2684 ndev->features |= NETIF_F_RXCSUM; in axienet_probe()
2692 * the device-tree and accordingly set flags. in axienet_probe()
2694 of_property_read_u32(pdev->dev.of_node, "xlnx,rxmem", &lp->rxmem); in axienet_probe()
2696 lp->switch_x_sgmii = of_property_read_bool(pdev->dev.of_node, in axienet_probe()
2697 "xlnx,switch-x-sgmii"); in axienet_probe()
2700 ret = of_property_read_u32(pdev->dev.of_node, "xlnx,phy-type", &value); in axienet_probe()
2702 netdev_warn(ndev, "Please upgrade your device tree binary blob to use phy-mode"); in axienet_probe()
2705 lp->phy_mode = PHY_INTERFACE_MODE_MII; in axienet_probe()
2708 lp->phy_mode = PHY_INTERFACE_MODE_GMII; in axienet_probe()
2711 lp->phy_mode = PHY_INTERFACE_MODE_RGMII_ID; in axienet_probe()
2714 lp->phy_mode = PHY_INTERFACE_MODE_SGMII; in axienet_probe()
2717 lp->phy_mode = PHY_INTERFACE_MODE_1000BASEX; in axienet_probe()
2720 ret = -EINVAL; in axienet_probe()
2724 ret = of_get_phy_mode(pdev->dev.of_node, &lp->phy_mode); in axienet_probe()
2728 if (lp->switch_x_sgmii && lp->phy_mode != PHY_INTERFACE_MODE_SGMII && in axienet_probe()
2729 lp->phy_mode != PHY_INTERFACE_MODE_1000BASEX) { in axienet_probe()
2730 dev_err(&pdev->dev, "xlnx,switch-x-sgmii only supported with SGMII or 1000BaseX\n"); in axienet_probe()
2731 ret = -EINVAL; in axienet_probe()
2735 if (!of_property_present(pdev->dev.of_node, "dmas")) { in axienet_probe()
2737 np = of_parse_phandle(pdev->dev.of_node, "axistream-connected", 0); in axienet_probe()
2744 dev_err(&pdev->dev, in axienet_probe()
2749 lp->dma_regs = devm_ioremap_resource(&pdev->dev, in axienet_probe()
2751 lp->rx_irq = irq_of_parse_and_map(np, 1); in axienet_probe()
2752 lp->tx_irq = irq_of_parse_and_map(np, 0); in axienet_probe()
2754 lp->eth_irq = platform_get_irq_optional(pdev, 0); in axienet_probe()
2757 lp->dma_regs = devm_platform_get_and_ioremap_resource(pdev, 1, NULL); in axienet_probe()
2758 lp->rx_irq = platform_get_irq(pdev, 1); in axienet_probe()
2759 lp->tx_irq = platform_get_irq(pdev, 0); in axienet_probe()
2760 lp->eth_irq = platform_get_irq_optional(pdev, 2); in axienet_probe()
2762 if (IS_ERR(lp->dma_regs)) { in axienet_probe()
2763 dev_err(&pdev->dev, "could not map DMA regs\n"); in axienet_probe()
2764 ret = PTR_ERR(lp->dma_regs); in axienet_probe()
2767 if (lp->rx_irq <= 0 || lp->tx_irq <= 0) { in axienet_probe()
2768 dev_err(&pdev->dev, "could not determine irqs\n"); in axienet_probe()
2769 ret = -ENOMEM; in axienet_probe()
2778 /* Autodetect the need for 64-bit DMA pointers. in axienet_probe()
2787 void __iomem *desc = lp->dma_regs + XAXIDMA_TX_CDESC_OFFSET + 4; in axienet_probe()
2793 lp->features |= XAE_FEATURE_DMA_64BIT; in axienet_probe()
2795 dev_info(&pdev->dev, in axienet_probe()
2796 "autodetected 64-bit DMA range\n"); in axienet_probe()
2801 if (!IS_ENABLED(CONFIG_64BIT) && lp->features & XAE_FEATURE_DMA_64BIT) { in axienet_probe()
2802 dev_err(&pdev->dev, "64-bit addressable DMA is not compatible with 32-bit archecture\n"); in axienet_probe()
2803 ret = -EINVAL; in axienet_probe()
2807 ret = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(addr_width)); in axienet_probe()
2809 dev_err(&pdev->dev, "No suitable DMA available\n"); in axienet_probe()
2812 netif_napi_add(ndev, &lp->napi_rx, axienet_rx_poll); in axienet_probe()
2813 netif_napi_add(ndev, &lp->napi_tx, axienet_tx_poll); in axienet_probe()
2818 lp->eth_irq = platform_get_irq_optional(pdev, 0); in axienet_probe()
2819 if (lp->eth_irq < 0 && lp->eth_irq != -ENXIO) { in axienet_probe()
2820 ret = lp->eth_irq; in axienet_probe()
2823 tx_chan = dma_request_chan(lp->dev, "tx_chan0"); in axienet_probe()
2826 dev_err_probe(lp->dev, ret, "No Ethernet DMA (TX) channel found\n"); in axienet_probe()
2834 dev_err(&pdev->dev, "Reset channel failed\n"); in axienet_probe()
2840 lp->use_dmaengine = 1; in axienet_probe()
2843 if (lp->use_dmaengine) in axienet_probe()
2844 ndev->netdev_ops = &axienet_netdev_dmaengine_ops; in axienet_probe()
2846 ndev->netdev_ops = &axienet_netdev_ops; in axienet_probe()
2848 if (lp->eth_irq <= 0) in axienet_probe()
2849 dev_info(&pdev->dev, "Ethernet core IRQ not defined\n"); in axienet_probe()
2852 ret = of_get_mac_address(pdev->dev.of_node, mac_addr); in axienet_probe()
2856 dev_warn(&pdev->dev, "could not find MAC address property: %d\n", in axienet_probe()
2861 lp->coalesce_count_rx = XAXIDMA_DFT_RX_THRESHOLD; in axienet_probe()
2862 lp->coalesce_count_tx = XAXIDMA_DFT_TX_THRESHOLD; in axienet_probe()
2863 lp->coalesce_usec_rx = XAXIDMA_DFT_RX_USEC; in axienet_probe()
2864 lp->coalesce_usec_tx = XAXIDMA_DFT_TX_USEC; in axienet_probe()
2868 dev_warn(&pdev->dev, in axienet_probe()
2871 if (lp->phy_mode == PHY_INTERFACE_MODE_SGMII || in axienet_probe()
2872 lp->phy_mode == PHY_INTERFACE_MODE_1000BASEX) { in axienet_probe()
2873 np = of_parse_phandle(pdev->dev.of_node, "pcs-handle", 0); in axienet_probe()
2875 /* Deprecated: Always use "pcs-handle" for pcs_phy. in axienet_probe()
2876 * Falling back to "phy-handle" here is only for in axienet_probe()
2879 np = of_parse_phandle(pdev->dev.of_node, "phy-handle", 0); in axienet_probe()
2882 dev_err(&pdev->dev, "pcs-handle (preferred) or phy-handle required for 1000BaseX/SGMII\n"); in axienet_probe()
2883 ret = -EINVAL; in axienet_probe()
2886 lp->pcs_phy = of_mdio_find_device(np); in axienet_probe()
2887 if (!lp->pcs_phy) { in axienet_probe()
2888 ret = -EPROBE_DEFER; in axienet_probe()
2893 lp->pcs.ops = &axienet_pcs_ops; in axienet_probe()
2894 lp->pcs.neg_mode = true; in axienet_probe()
2895 lp->pcs.poll = true; in axienet_probe()
2898 lp->phylink_config.dev = &ndev->dev; in axienet_probe()
2899 lp->phylink_config.type = PHYLINK_NETDEV; in axienet_probe()
2900 lp->phylink_config.mac_managed_pm = true; in axienet_probe()
2901 lp->phylink_config.mac_capabilities = MAC_SYM_PAUSE | MAC_ASYM_PAUSE | in axienet_probe()
2904 __set_bit(lp->phy_mode, lp->phylink_config.supported_interfaces); in axienet_probe()
2905 if (lp->switch_x_sgmii) { in axienet_probe()
2907 lp->phylink_config.supported_interfaces); in axienet_probe()
2909 lp->phylink_config.supported_interfaces); in axienet_probe()
2912 lp->phylink = phylink_create(&lp->phylink_config, pdev->dev.fwnode, in axienet_probe()
2913 lp->phy_mode, in axienet_probe()
2915 if (IS_ERR(lp->phylink)) { in axienet_probe()
2916 ret = PTR_ERR(lp->phylink); in axienet_probe()
2917 dev_err(&pdev->dev, "phylink_create error (%i)\n", ret); in axienet_probe()
2921 ret = register_netdev(lp->ndev); in axienet_probe()
2923 dev_err(lp->dev, "register_netdev() error (%i)\n", ret); in axienet_probe()
2930 phylink_destroy(lp->phylink); in axienet_probe()
2933 if (lp->pcs_phy) in axienet_probe()
2934 put_device(&lp->pcs_phy->dev); in axienet_probe()
2935 if (lp->mii_bus) in axienet_probe()
2938 clk_bulk_disable_unprepare(XAE_NUM_MISC_CLOCKS, lp->misc_clks); in axienet_probe()
2939 clk_disable_unprepare(lp->axi_clk); in axienet_probe()
2954 if (lp->phylink) in axienet_remove()
2955 phylink_destroy(lp->phylink); in axienet_remove()
2957 if (lp->pcs_phy) in axienet_remove()
2958 put_device(&lp->pcs_phy->dev); in axienet_remove()
2962 clk_bulk_disable_unprepare(XAE_NUM_MISC_CLOCKS, lp->misc_clks); in axienet_remove()
2963 clk_disable_unprepare(lp->axi_clk); in axienet_remove()