2 * Copyright (C) 2014 Freescale Semiconductor
4 * SPDX-License-Identifier: GPL-2.0+
14 #include <linux/compat.h>
16 #include "ldpaa_eth.h"
19 static int init_phy(struct eth_device *dev)
21 /*TODO for external PHY */
26 static void ldpaa_eth_rx(struct ldpaa_eth_priv *priv,
27 const struct dpaa_fd *fd)
32 struct ldpaa_fas *fas;
34 struct qbman_release_desc releasedesc;
35 struct qbman_swp *swp = dflt_dpio->sw_portal;
37 fd_addr = ldpaa_fd_get_addr(fd);
38 fd_offset = ldpaa_fd_get_offset(fd);
39 fd_length = ldpaa_fd_get_len(fd);
41 debug("Rx frame:data addr=0x%p size=0x%x\n", (u64 *)fd_addr, fd_length);
43 if (fd->simple.frc & LDPAA_FD_FRC_FASV) {
44 /* Read the frame annotation status word and check for errors */
45 fas = (struct ldpaa_fas *)
46 ((uint8_t *)(fd_addr) +
47 priv->buf_layout.private_data_size);
48 status = le32_to_cpu(fas->status);
49 if (status & LDPAA_ETH_RX_ERR_MASK) {
50 printf("Rx frame error(s): 0x%08x\n",
51 status & LDPAA_ETH_RX_ERR_MASK);
53 } else if (status & LDPAA_ETH_RX_UNSUPP_MASK) {
54 printf("Unsupported feature in bitmask: 0x%08x\n",
55 status & LDPAA_ETH_RX_UNSUPP_MASK);
60 debug("Rx frame: To Upper layer\n");
61 net_process_received_packet((uint8_t *)(fd_addr) + fd_offset,
65 flush_dcache_range(fd_addr, fd_addr + LDPAA_ETH_RX_BUFFER_SIZE);
66 qbman_release_desc_clear(&releasedesc);
67 qbman_release_desc_set_bpid(&releasedesc, dflt_dpbp->dpbp_attr.bpid);
69 /* Release buffer into the QBMAN */
70 err = qbman_swp_release(swp, &releasedesc, &fd_addr, 1);
71 } while (err == -EBUSY);
75 static int ldpaa_eth_pull_dequeue_rx(struct eth_device *dev)
77 struct ldpaa_eth_priv *priv = (struct ldpaa_eth_priv *)dev->priv;
78 const struct ldpaa_dq *dq;
79 const struct dpaa_fd *fd;
80 int i = 5, err = 0, status;
81 u32 timeo = (CONFIG_SYS_HZ * 2) / 1000;
83 static struct qbman_pull_desc pulldesc;
84 struct qbman_swp *swp = dflt_dpio->sw_portal;
87 qbman_pull_desc_clear(&pulldesc);
88 qbman_pull_desc_set_numframes(&pulldesc, 1);
89 qbman_pull_desc_set_fq(&pulldesc, priv->rx_dflt_fqid);
91 err = qbman_swp_pull(swp, &pulldesc);
93 printf("Dequeue frames error:0x%08x\n", err);
97 time_start = get_timer(0);
100 dq = qbman_swp_dqrr_next(swp);
101 } while (get_timer(time_start) < timeo && !dq);
104 /* Check for valid frame. If not sent a consume
105 * confirmation to QBMAN otherwise give it to NADK
106 * application and then send consume confirmation to
109 status = (uint8_t)ldpaa_dq_flags(dq);
110 if ((status & LDPAA_DQ_STAT_VALIDFRAME) == 0) {
111 debug("Dequeue RX frames:");
112 debug("No frame delivered\n");
114 qbman_swp_dqrr_consume(swp, dq);
118 fd = ldpaa_dq_fd(dq);
120 /* Obtain FD and process it */
121 ldpaa_eth_rx(priv, fd);
122 qbman_swp_dqrr_consume(swp, dq);
126 debug("No DQRR entries\n");
134 static int ldpaa_eth_tx(struct eth_device *net_dev, void *buf, int len)
136 struct ldpaa_eth_priv *priv = (struct ldpaa_eth_priv *)net_dev->priv;
139 int data_offset, err;
140 u32 timeo = (CONFIG_SYS_HZ * 10) / 1000;
142 struct qbman_swp *swp = dflt_dpio->sw_portal;
143 struct qbman_eq_desc ed;
144 struct qbman_release_desc releasedesc;
146 /* Setup the FD fields */
147 memset(&fd, 0, sizeof(fd));
149 data_offset = priv->tx_data_offset;
152 err = qbman_swp_acquire(dflt_dpio->sw_portal,
153 dflt_dpbp->dpbp_attr.bpid,
155 } while (err == -EBUSY);
158 printf("qbman_swp_acquire() failed\n");
162 debug("TX data: malloc buffer start=0x%p\n", (u64 *)buffer_start);
164 memcpy(((uint8_t *)(buffer_start) + data_offset), buf, len);
166 flush_dcache_range(buffer_start, buffer_start +
167 LDPAA_ETH_RX_BUFFER_SIZE);
169 ldpaa_fd_set_addr(&fd, (u64)buffer_start);
170 ldpaa_fd_set_offset(&fd, (uint16_t)(data_offset));
171 ldpaa_fd_set_bpid(&fd, dflt_dpbp->dpbp_attr.bpid);
172 ldpaa_fd_set_len(&fd, len);
174 fd.simple.ctrl = LDPAA_FD_CTRL_ASAL | LDPAA_FD_CTRL_PTA |
177 qbman_eq_desc_clear(&ed);
178 qbman_eq_desc_set_no_orp(&ed, 0);
179 qbman_eq_desc_set_qd(&ed, priv->tx_qdid, priv->tx_flow_id, 0);
181 time_start = get_timer(0);
183 while (get_timer(time_start) < timeo) {
184 err = qbman_swp_enqueue(swp, &ed,
185 (const struct qbman_fd *)(&fd));
191 printf("error enqueueing Tx frame\n");
198 qbman_release_desc_clear(&releasedesc);
199 qbman_release_desc_set_bpid(&releasedesc, dflt_dpbp->dpbp_attr.bpid);
200 time_start = get_timer(0);
202 /* Release buffer into the QBMAN */
203 err = qbman_swp_release(swp, &releasedesc, &buffer_start, 1);
204 } while (get_timer(time_start) < timeo && err == -EBUSY);
207 printf("TX data: QBMAN buffer release fails\n");
212 static int ldpaa_eth_open(struct eth_device *net_dev, bd_t *bd)
214 struct ldpaa_eth_priv *priv = (struct ldpaa_eth_priv *)net_dev->priv;
215 struct dpni_queue_attr rx_queue_attr;
219 if (net_dev->state == ETH_STATE_ACTIVE)
222 /* DPNI initialization */
223 err = ldpaa_dpni_setup(priv);
227 err = ldpaa_dpbp_setup();
231 /* DPNI binding DPBP */
232 err = ldpaa_dpni_bind(priv);
236 err = dpni_get_primary_mac_addr(dflt_mc_io, priv->dpni_handle,
239 printf("dpni_get_primary_mac_addr() failed\n");
243 memcpy(net_dev->enetaddr, mac_addr, 0x6);
245 /* setup the MAC address */
246 if (net_dev->enetaddr[0] & 0x01) {
247 printf("%s: MacAddress is multcast address\n", __func__);
252 /* TODO Check this path */
253 err = phy_startup(priv->phydev);
255 printf("%s: Could not initialize\n", priv->phydev->dev->name);
259 priv->phydev->speed = SPEED_1000;
260 priv->phydev->link = 1;
261 priv->phydev->duplex = DUPLEX_FULL;
264 err = dpni_enable(dflt_mc_io, priv->dpni_handle);
266 printf("dpni_enable() failed\n");
270 /* TODO: support multiple Rx flows */
271 err = dpni_get_rx_flow(dflt_mc_io, priv->dpni_handle, 0, 0,
274 printf("dpni_get_rx_flow() failed\n");
278 priv->rx_dflt_fqid = rx_queue_attr.fqid;
280 err = dpni_get_qdid(dflt_mc_io, priv->dpni_handle, &priv->tx_qdid);
282 printf("dpni_get_qdid() failed\n");
286 if (!priv->phydev->link)
287 printf("%s: No link.\n", priv->phydev->dev->name);
289 return priv->phydev->link ? 0 : -1;
293 dpni_disable(dflt_mc_io, priv->dpni_handle);
297 dpni_close(dflt_mc_io, priv->dpni_handle);
302 static void ldpaa_eth_stop(struct eth_device *net_dev)
304 struct ldpaa_eth_priv *priv = (struct ldpaa_eth_priv *)net_dev->priv;
307 if ((net_dev->state == ETH_STATE_PASSIVE) ||
308 (net_dev->state == ETH_STATE_INIT))
310 /* Stop Tx and Rx traffic */
311 err = dpni_disable(dflt_mc_io, priv->dpni_handle);
313 printf("dpni_disable() failed\n");
316 phy_shutdown(priv->phydev);
320 dpni_reset(dflt_mc_io, priv->dpni_handle);
321 dpni_close(dflt_mc_io, priv->dpni_handle);
324 static void ldpaa_dpbp_drain_cnt(int count)
326 uint64_t buf_array[7];
333 ret = qbman_swp_acquire(dflt_dpio->sw_portal,
334 dflt_dpbp->dpbp_attr.bpid,
337 printf("qbman_swp_acquire() failed\n");
340 for (i = 0; i < ret; i++) {
341 addr = (void *)buf_array[i];
342 debug("Free: buffer addr =0x%p\n", addr);
348 static void ldpaa_dpbp_drain(void)
351 for (i = 0; i < LDPAA_ETH_NUM_BUFS; i += 7)
352 ldpaa_dpbp_drain_cnt(7);
355 static int ldpaa_bp_add_7(uint16_t bpid)
357 uint64_t buf_array[7];
360 struct qbman_release_desc rd;
362 for (i = 0; i < 7; i++) {
363 addr = memalign(L1_CACHE_BYTES, LDPAA_ETH_RX_BUFFER_SIZE);
365 printf("addr allocation failed\n");
368 memset(addr, 0x00, LDPAA_ETH_RX_BUFFER_SIZE);
369 flush_dcache_range((u64)addr,
370 (u64)(addr + LDPAA_ETH_RX_BUFFER_SIZE));
372 buf_array[i] = (uint64_t)addr;
373 debug("Release: buffer addr =0x%p\n", addr);
377 /* In case the portal is busy, retry until successful.
378 * This function is guaranteed to succeed in a reasonable amount
384 qbman_release_desc_clear(&rd);
385 qbman_release_desc_set_bpid(&rd, bpid);
386 } while (qbman_swp_release(dflt_dpio->sw_portal, &rd, buf_array, i));
397 static int ldpaa_dpbp_seed(uint16_t bpid)
402 for (i = 0; i < LDPAA_ETH_NUM_BUFS; i += 7) {
403 count = ldpaa_bp_add_7(bpid);
405 printf("Buffer Seed= %d\n", count);
411 static int ldpaa_dpbp_setup(void)
415 err = dpbp_open(dflt_mc_io, dflt_dpbp->dpbp_attr.id,
416 &dflt_dpbp->dpbp_handle);
418 printf("dpbp_open() failed\n");
422 err = dpbp_enable(dflt_mc_io, dflt_dpbp->dpbp_handle);
424 printf("dpbp_enable() failed\n");
428 err = dpbp_get_attributes(dflt_mc_io, dflt_dpbp->dpbp_handle,
429 &dflt_dpbp->dpbp_attr);
431 printf("dpbp_get_attributes() failed\n");
435 err = ldpaa_dpbp_seed(dflt_dpbp->dpbp_attr.bpid);
437 printf("Buffer seeding failed for DPBP %d (bpid=%d)\n",
438 dflt_dpbp->dpbp_attr.id, dflt_dpbp->dpbp_attr.bpid);
446 dpbp_disable(dflt_mc_io, dflt_dpbp->dpbp_handle);
448 dpbp_close(dflt_mc_io, dflt_dpbp->dpbp_handle);
453 static void ldpaa_dpbp_free(void)
456 dpbp_disable(dflt_mc_io, dflt_dpbp->dpbp_handle);
457 dpbp_reset(dflt_mc_io, dflt_dpbp->dpbp_handle);
458 dpbp_close(dflt_mc_io, dflt_dpbp->dpbp_handle);
461 static int ldpaa_dpni_setup(struct ldpaa_eth_priv *priv)
465 /* and get a handle for the DPNI this interface is associate with */
466 err = dpni_open(dflt_mc_io, priv->dpni_id, &priv->dpni_handle);
468 printf("dpni_open() failed\n");
472 err = dpni_get_attributes(dflt_mc_io, priv->dpni_handle,
475 printf("dpni_get_attributes() failed (err=%d)\n", err);
479 /* Configure our buffers' layout */
480 priv->buf_layout.options = DPNI_BUF_LAYOUT_OPT_PARSER_RESULT |
481 DPNI_BUF_LAYOUT_OPT_FRAME_STATUS |
482 DPNI_BUF_LAYOUT_OPT_PRIVATE_DATA_SIZE;
483 priv->buf_layout.pass_parser_result = true;
484 priv->buf_layout.pass_frame_status = true;
485 priv->buf_layout.private_data_size = LDPAA_ETH_SWA_SIZE;
487 err = dpni_set_rx_buffer_layout(dflt_mc_io, priv->dpni_handle,
490 printf("dpni_set_rx_buffer_layout() failed");
495 priv->buf_layout.options &= ~DPNI_BUF_LAYOUT_OPT_PARSER_RESULT;
496 err = dpni_set_tx_buffer_layout(dflt_mc_io, priv->dpni_handle,
499 printf("dpni_set_tx_buffer_layout() failed");
503 /* ... tx-confirm. */
504 priv->buf_layout.options &= ~DPNI_BUF_LAYOUT_OPT_PRIVATE_DATA_SIZE;
505 err = dpni_set_tx_conf_buffer_layout(dflt_mc_io, priv->dpni_handle,
508 printf("dpni_set_tx_conf_buffer_layout() failed");
512 /* Now that we've set our tx buffer layout, retrieve the minimum
513 * required tx data offset.
515 err = dpni_get_tx_data_offset(dflt_mc_io, priv->dpni_handle,
516 &priv->tx_data_offset);
518 printf("dpni_get_tx_data_offset() failed\n");
519 goto err_data_offset;
522 /* Warn in case TX data offset is not multiple of 64 bytes. */
523 WARN_ON(priv->tx_data_offset % 64);
525 /* Accomodate SWA space. */
526 priv->tx_data_offset += LDPAA_ETH_SWA_SIZE;
527 debug("priv->tx_data_offset=%d\n", priv->tx_data_offset);
534 dpni_close(dflt_mc_io, priv->dpni_handle);
539 static int ldpaa_dpni_bind(struct ldpaa_eth_priv *priv)
541 struct dpni_pools_cfg pools_params;
542 struct dpni_tx_flow_cfg dflt_tx_flow;
545 pools_params.num_dpbp = 1;
546 pools_params.pools[0].dpbp_id = (uint16_t)dflt_dpbp->dpbp_attr.id;
547 pools_params.pools[0].buffer_size = LDPAA_ETH_RX_BUFFER_SIZE;
548 err = dpni_set_pools(dflt_mc_io, priv->dpni_handle, &pools_params);
550 printf("dpni_set_pools() failed\n");
554 priv->tx_flow_id = DPNI_NEW_FLOW_ID;
555 memset(&dflt_tx_flow, 0, sizeof(dflt_tx_flow));
557 dflt_tx_flow.options = DPNI_TX_FLOW_OPT_ONLY_TX_ERROR;
558 dflt_tx_flow.conf_err_cfg.use_default_queue = 0;
559 dflt_tx_flow.conf_err_cfg.errors_only = 1;
560 err = dpni_set_tx_flow(dflt_mc_io, priv->dpni_handle,
561 &priv->tx_flow_id, &dflt_tx_flow);
563 printf("dpni_set_tx_flow() failed\n");
570 static int ldpaa_eth_netdev_init(struct eth_device *net_dev)
573 struct ldpaa_eth_priv *priv = (struct ldpaa_eth_priv *)net_dev->priv;
575 sprintf(net_dev->name, "DPNI%d", priv->dpni_id);
578 net_dev->init = ldpaa_eth_open;
579 net_dev->halt = ldpaa_eth_stop;
580 net_dev->send = ldpaa_eth_tx;
581 net_dev->recv = ldpaa_eth_pull_dequeue_rx;
583 TODO: PHY MDIO information
584 priv->bus = info->bus;
585 priv->phyaddr = info->phy_addr;
586 priv->enet_if = info->enet_if;
589 if (init_phy(net_dev))
592 err = eth_register(net_dev);
594 printf("eth_register() = %d\n", err);
601 int ldpaa_eth_init(struct dprc_obj_desc obj_desc)
603 struct eth_device *net_dev = NULL;
604 struct ldpaa_eth_priv *priv = NULL;
609 net_dev = (struct eth_device *)malloc(sizeof(struct eth_device));
611 printf("eth_device malloc() failed\n");
614 memset(net_dev, 0, sizeof(struct eth_device));
616 /* alloc the ldpaa ethernet private struct */
617 priv = (struct ldpaa_eth_priv *)malloc(sizeof(struct ldpaa_eth_priv));
619 printf("ldpaa_eth_priv malloc() failed\n");
622 memset(priv, 0, sizeof(struct ldpaa_eth_priv));
624 net_dev->priv = (void *)priv;
625 priv->net_dev = (struct eth_device *)net_dev;
626 priv->dpni_id = obj_desc.id;
628 err = ldpaa_eth_netdev_init(net_dev);
630 goto err_netdev_init;
632 debug("ldpaa ethernet: Probed interface %s\n", net_dev->name);
637 net_dev->priv = NULL;