1 /* QLogic qed NIC Driver
2 * Copyright (c) 2015-2017 QLogic Corporation
4 * This software is available to you under a choice of one of two
5 * licenses. You may choose to be licensed under the terms of the GNU
6 * General Public License (GPL) Version 2, available from the file
7 * COPYING in the main directory of this source tree, or the
8 * OpenIB.org BSD license below:
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
18 * - Redistributions in binary form must reproduce the above
19 * copyright notice, this list of conditions and the following
20 * disclaimer in the documentation and /or other materials
21 * provided with the distribution.
23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
33 #include <linux/types.h>
34 #include <asm/byteorder.h>
35 #include <linux/dma-mapping.h>
36 #include <linux/if_vlan.h>
37 #include <linux/kernel.h>
38 #include <linux/pci.h>
39 #include <linux/slab.h>
40 #include <linux/stddef.h>
41 #include <linux/workqueue.h>
43 #include <linux/bitops.h>
44 #include <linux/delay.h>
45 #include <linux/errno.h>
46 #include <linux/etherdevice.h>
48 #include <linux/list.h>
49 #include <linux/mutex.h>
50 #include <linux/spinlock.h>
51 #include <linux/string.h>
52 #include <linux/qed/qed_ll2_if.h>
55 #include "qed_dev_api.h"
62 #include "qed_reg_addr.h"
66 #define QED_LL2_RX_REGISTERED(ll2) ((ll2)->rx_queue.b_cb_registred)
67 #define QED_LL2_TX_REGISTERED(ll2) ((ll2)->tx_queue.b_cb_registred)
69 #define QED_LL2_TX_SIZE (256)
70 #define QED_LL2_RX_SIZE (4096)
72 struct qed_cb_ll2_info {
77 /* Lock protecting LL2 buffer lists in sleepless context */
79 struct list_head list;
81 const struct qed_ll2_cb_ops *cbs;
85 struct qed_ll2_buffer {
86 struct list_head list;
91 static void qed_ll2b_complete_tx_packet(void *cxt,
94 dma_addr_t first_frag_addr,
98 struct qed_hwfn *p_hwfn = cxt;
99 struct qed_dev *cdev = p_hwfn->cdev;
100 struct sk_buff *skb = cookie;
102 /* All we need to do is release the mapping */
103 dma_unmap_single(&p_hwfn->cdev->pdev->dev, first_frag_addr,
104 skb_headlen(skb), DMA_TO_DEVICE);
106 if (cdev->ll2->cbs && cdev->ll2->cbs->tx_cb)
107 cdev->ll2->cbs->tx_cb(cdev->ll2->cb_cookie, skb,
110 dev_kfree_skb_any(skb);
113 static int qed_ll2_alloc_buffer(struct qed_dev *cdev,
114 u8 **data, dma_addr_t *phys_addr)
116 *data = kmalloc(cdev->ll2->rx_size, GFP_ATOMIC);
118 DP_INFO(cdev, "Failed to allocate LL2 buffer data\n");
122 *phys_addr = dma_map_single(&cdev->pdev->dev,
123 ((*data) + NET_SKB_PAD),
124 cdev->ll2->rx_size, DMA_FROM_DEVICE);
125 if (dma_mapping_error(&cdev->pdev->dev, *phys_addr)) {
126 DP_INFO(cdev, "Failed to map LL2 buffer data\n");
134 static int qed_ll2_dealloc_buffer(struct qed_dev *cdev,
135 struct qed_ll2_buffer *buffer)
137 spin_lock_bh(&cdev->ll2->lock);
139 dma_unmap_single(&cdev->pdev->dev, buffer->phys_addr,
140 cdev->ll2->rx_size, DMA_FROM_DEVICE);
142 list_del(&buffer->list);
145 if (!cdev->ll2->rx_cnt)
146 DP_INFO(cdev, "All LL2 entries were removed\n");
148 spin_unlock_bh(&cdev->ll2->lock);
153 static void qed_ll2_kill_buffers(struct qed_dev *cdev)
155 struct qed_ll2_buffer *buffer, *tmp_buffer;
157 list_for_each_entry_safe(buffer, tmp_buffer, &cdev->ll2->list, list)
158 qed_ll2_dealloc_buffer(cdev, buffer);
161 void qed_ll2b_complete_rx_packet(void *cxt, struct qed_ll2_comp_rx_data *data)
163 struct qed_hwfn *p_hwfn = cxt;
164 struct qed_ll2_buffer *buffer = data->cookie;
165 struct qed_dev *cdev = p_hwfn->cdev;
166 dma_addr_t new_phys_addr;
173 (NETIF_MSG_RX_STATUS | QED_MSG_STORAGE | NETIF_MSG_PKTDATA),
174 "Got an LL2 Rx completion: [Buffer at phys 0x%llx, offset 0x%02x] Length 0x%04x Parse_flags 0x%04x vlan 0x%04x Opaque data [0x%08x:0x%08x]\n",
175 (u64)data->rx_buf_addr,
176 data->u.placement_offset,
177 data->length.packet_length,
179 data->vlan, data->opaque_data_0, data->opaque_data_1);
181 if ((cdev->dp_module & NETIF_MSG_PKTDATA) && buffer->data) {
182 print_hex_dump(KERN_INFO, "",
183 DUMP_PREFIX_OFFSET, 16, 1,
184 buffer->data, data->length.packet_length, false);
187 /* Determine if data is valid */
188 if (data->length.packet_length < ETH_HLEN)
191 /* Allocate a replacement for buffer; Reuse upon failure */
193 rc = qed_ll2_alloc_buffer(p_hwfn->cdev, &new_data,
196 /* If need to reuse or there's no replacement buffer, repost this */
199 dma_unmap_single(&cdev->pdev->dev, buffer->phys_addr,
200 cdev->ll2->rx_size, DMA_FROM_DEVICE);
202 skb = build_skb(buffer->data, 0);
208 data->u.placement_offset += NET_SKB_PAD;
209 skb_reserve(skb, data->u.placement_offset);
210 skb_put(skb, data->length.packet_length);
211 skb_checksum_none_assert(skb);
213 /* Get parital ethernet information instead of eth_type_trans(),
214 * Since we don't have an associated net_device.
216 skb_reset_mac_header(skb);
217 skb->protocol = eth_hdr(skb)->h_proto;
219 /* Pass SKB onward */
220 if (cdev->ll2->cbs && cdev->ll2->cbs->rx_cb) {
222 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q),
224 cdev->ll2->cbs->rx_cb(cdev->ll2->cb_cookie, skb,
226 data->opaque_data_1);
229 /* Update Buffer information and update FW producer */
230 buffer->data = new_data;
231 buffer->phys_addr = new_phys_addr;
234 rc = qed_ll2_post_rx_buffer(QED_LEADING_HWFN(cdev), cdev->ll2->handle,
235 buffer->phys_addr, 0, buffer, 1);
238 qed_ll2_dealloc_buffer(cdev, buffer);
241 static struct qed_ll2_info *__qed_ll2_handle_sanity(struct qed_hwfn *p_hwfn,
242 u8 connection_handle,
246 struct qed_ll2_info *p_ll2_conn, *p_ret = NULL;
248 if (connection_handle >= QED_MAX_NUM_OF_LL2_CONNECTIONS)
251 if (!p_hwfn->p_ll2_info)
254 p_ll2_conn = &p_hwfn->p_ll2_info[connection_handle];
258 mutex_lock(&p_ll2_conn->mutex);
259 if (p_ll2_conn->b_active)
262 mutex_unlock(&p_ll2_conn->mutex);
270 static struct qed_ll2_info *qed_ll2_handle_sanity(struct qed_hwfn *p_hwfn,
271 u8 connection_handle)
273 return __qed_ll2_handle_sanity(p_hwfn, connection_handle, false, true);
276 static struct qed_ll2_info *qed_ll2_handle_sanity_lock(struct qed_hwfn *p_hwfn,
277 u8 connection_handle)
279 return __qed_ll2_handle_sanity(p_hwfn, connection_handle, true, true);
282 static struct qed_ll2_info *qed_ll2_handle_sanity_inactive(struct qed_hwfn
284 u8 connection_handle)
286 return __qed_ll2_handle_sanity(p_hwfn, connection_handle, false, false);
289 static void qed_ll2_txq_flush(struct qed_hwfn *p_hwfn, u8 connection_handle)
291 bool b_last_packet = false, b_last_frag = false;
292 struct qed_ll2_tx_packet *p_pkt = NULL;
293 struct qed_ll2_info *p_ll2_conn;
294 struct qed_ll2_tx_queue *p_tx;
297 p_ll2_conn = qed_ll2_handle_sanity_inactive(p_hwfn, connection_handle);
301 p_tx = &p_ll2_conn->tx_queue;
303 while (!list_empty(&p_tx->active_descq)) {
304 p_pkt = list_first_entry(&p_tx->active_descq,
305 struct qed_ll2_tx_packet, list_entry);
309 list_del(&p_pkt->list_entry);
310 b_last_packet = list_empty(&p_tx->active_descq);
311 list_add_tail(&p_pkt->list_entry, &p_tx->free_descq);
312 if (p_ll2_conn->input.conn_type == QED_LL2_TYPE_OOO) {
313 struct qed_ooo_buffer *p_buffer;
315 p_buffer = (struct qed_ooo_buffer *)p_pkt->cookie;
316 qed_ooo_put_free_buffer(p_hwfn, p_hwfn->p_ooo_info,
319 p_tx->cur_completing_packet = *p_pkt;
320 p_tx->cur_completing_bd_idx = 1;
322 p_tx->cur_completing_bd_idx == p_pkt->bd_used;
323 tx_frag = p_pkt->bds_set[0].tx_frag;
324 p_ll2_conn->cbs.tx_release_cb(p_ll2_conn->cbs.cookie,
334 static int qed_ll2_txq_completion(struct qed_hwfn *p_hwfn, void *p_cookie)
336 struct qed_ll2_info *p_ll2_conn = p_cookie;
337 struct qed_ll2_tx_queue *p_tx = &p_ll2_conn->tx_queue;
338 u16 new_idx = 0, num_bds = 0, num_bds_in_packet = 0;
339 struct qed_ll2_tx_packet *p_pkt;
340 bool b_last_frag = false;
344 spin_lock_irqsave(&p_tx->lock, flags);
345 if (p_tx->b_completing_packet) {
350 new_idx = le16_to_cpu(*p_tx->p_fw_cons);
351 num_bds = ((s16)new_idx - (s16)p_tx->bds_idx);
353 if (list_empty(&p_tx->active_descq))
356 p_pkt = list_first_entry(&p_tx->active_descq,
357 struct qed_ll2_tx_packet, list_entry);
361 p_tx->b_completing_packet = true;
362 p_tx->cur_completing_packet = *p_pkt;
363 num_bds_in_packet = p_pkt->bd_used;
364 list_del(&p_pkt->list_entry);
366 if (num_bds < num_bds_in_packet) {
368 "Rest of BDs does not cover whole packet\n");
372 num_bds -= num_bds_in_packet;
373 p_tx->bds_idx += num_bds_in_packet;
374 while (num_bds_in_packet--)
375 qed_chain_consume(&p_tx->txq_chain);
377 p_tx->cur_completing_bd_idx = 1;
378 b_last_frag = p_tx->cur_completing_bd_idx == p_pkt->bd_used;
379 list_add_tail(&p_pkt->list_entry, &p_tx->free_descq);
381 spin_unlock_irqrestore(&p_tx->lock, flags);
383 p_ll2_conn->cbs.tx_comp_cb(p_ll2_conn->cbs.cookie,
386 p_pkt->bds_set[0].tx_frag,
387 b_last_frag, !num_bds);
389 spin_lock_irqsave(&p_tx->lock, flags);
392 p_tx->b_completing_packet = false;
395 spin_unlock_irqrestore(&p_tx->lock, flags);
399 static void qed_ll2_rxq_parse_gsi(struct qed_hwfn *p_hwfn,
400 union core_rx_cqe_union *p_cqe,
401 struct qed_ll2_comp_rx_data *data)
403 data->parse_flags = le16_to_cpu(p_cqe->rx_cqe_gsi.parse_flags.flags);
404 data->length.data_length = le16_to_cpu(p_cqe->rx_cqe_gsi.data_length);
405 data->vlan = le16_to_cpu(p_cqe->rx_cqe_gsi.vlan);
406 data->opaque_data_0 = le32_to_cpu(p_cqe->rx_cqe_gsi.src_mac_addrhi);
407 data->opaque_data_1 = le16_to_cpu(p_cqe->rx_cqe_gsi.src_mac_addrlo);
408 data->u.data_length_error = p_cqe->rx_cqe_gsi.data_length_error;
409 data->qp_id = le16_to_cpu(p_cqe->rx_cqe_gsi.qp_id);
411 data->src_qp = le32_to_cpu(p_cqe->rx_cqe_gsi.src_qp);
414 static void qed_ll2_rxq_parse_reg(struct qed_hwfn *p_hwfn,
415 union core_rx_cqe_union *p_cqe,
416 struct qed_ll2_comp_rx_data *data)
418 data->parse_flags = le16_to_cpu(p_cqe->rx_cqe_fp.parse_flags.flags);
419 data->err_flags = le16_to_cpu(p_cqe->rx_cqe_fp.err_flags.flags);
420 data->length.packet_length =
421 le16_to_cpu(p_cqe->rx_cqe_fp.packet_length);
422 data->vlan = le16_to_cpu(p_cqe->rx_cqe_fp.vlan);
423 data->opaque_data_0 = le32_to_cpu(p_cqe->rx_cqe_fp.opaque_data.data[0]);
424 data->opaque_data_1 = le32_to_cpu(p_cqe->rx_cqe_fp.opaque_data.data[1]);
425 data->u.placement_offset = p_cqe->rx_cqe_fp.placement_offset;
429 qed_ll2_handle_slowpath(struct qed_hwfn *p_hwfn,
430 struct qed_ll2_info *p_ll2_conn,
431 union core_rx_cqe_union *p_cqe,
432 unsigned long *p_lock_flags)
434 struct qed_ll2_rx_queue *p_rx = &p_ll2_conn->rx_queue;
435 struct core_rx_slow_path_cqe *sp_cqe;
437 sp_cqe = &p_cqe->rx_cqe_sp;
438 if (sp_cqe->ramrod_cmd_id != CORE_RAMROD_RX_QUEUE_FLUSH) {
440 "LL2 - unexpected Rx CQE slowpath ramrod_cmd_id:%d\n",
441 sp_cqe->ramrod_cmd_id);
445 if (!p_ll2_conn->cbs.slowpath_cb) {
447 "LL2 - received RX_QUEUE_FLUSH but no callback was provided\n");
451 spin_unlock_irqrestore(&p_rx->lock, *p_lock_flags);
453 p_ll2_conn->cbs.slowpath_cb(p_ll2_conn->cbs.cookie,
455 le32_to_cpu(sp_cqe->opaque_data.data[0]),
456 le32_to_cpu(sp_cqe->opaque_data.data[1]));
458 spin_lock_irqsave(&p_rx->lock, *p_lock_flags);
464 qed_ll2_rxq_handle_completion(struct qed_hwfn *p_hwfn,
465 struct qed_ll2_info *p_ll2_conn,
466 union core_rx_cqe_union *p_cqe,
467 unsigned long *p_lock_flags, bool b_last_cqe)
469 struct qed_ll2_rx_queue *p_rx = &p_ll2_conn->rx_queue;
470 struct qed_ll2_rx_packet *p_pkt = NULL;
471 struct qed_ll2_comp_rx_data data;
473 if (!list_empty(&p_rx->active_descq))
474 p_pkt = list_first_entry(&p_rx->active_descq,
475 struct qed_ll2_rx_packet, list_entry);
478 "[%d] LL2 Rx completion but active_descq is empty\n",
479 p_ll2_conn->input.conn_type);
483 list_del(&p_pkt->list_entry);
485 if (p_cqe->rx_cqe_sp.type == CORE_RX_CQE_TYPE_REGULAR)
486 qed_ll2_rxq_parse_reg(p_hwfn, p_cqe, &data);
488 qed_ll2_rxq_parse_gsi(p_hwfn, p_cqe, &data);
489 if (qed_chain_consume(&p_rx->rxq_chain) != p_pkt->rxq_bd)
491 "Mismatch between active_descq and the LL2 Rx chain\n");
493 list_add_tail(&p_pkt->list_entry, &p_rx->free_descq);
495 data.connection_handle = p_ll2_conn->my_id;
496 data.cookie = p_pkt->cookie;
497 data.rx_buf_addr = p_pkt->rx_buf_addr;
498 data.b_last_packet = b_last_cqe;
500 spin_unlock_irqrestore(&p_rx->lock, *p_lock_flags);
501 p_ll2_conn->cbs.rx_comp_cb(p_ll2_conn->cbs.cookie, &data);
503 spin_lock_irqsave(&p_rx->lock, *p_lock_flags);
508 static int qed_ll2_rxq_completion(struct qed_hwfn *p_hwfn, void *cookie)
510 struct qed_ll2_info *p_ll2_conn = (struct qed_ll2_info *)cookie;
511 struct qed_ll2_rx_queue *p_rx = &p_ll2_conn->rx_queue;
512 union core_rx_cqe_union *cqe = NULL;
513 u16 cq_new_idx = 0, cq_old_idx = 0;
514 unsigned long flags = 0;
517 spin_lock_irqsave(&p_rx->lock, flags);
518 cq_new_idx = le16_to_cpu(*p_rx->p_fw_cons);
519 cq_old_idx = qed_chain_get_cons_idx(&p_rx->rcq_chain);
521 while (cq_new_idx != cq_old_idx) {
522 bool b_last_cqe = (cq_new_idx == cq_old_idx);
525 (union core_rx_cqe_union *)
526 qed_chain_consume(&p_rx->rcq_chain);
527 cq_old_idx = qed_chain_get_cons_idx(&p_rx->rcq_chain);
531 "LL2 [sw. cons %04x, fw. at %04x] - Got Packet of type %02x\n",
532 cq_old_idx, cq_new_idx, cqe->rx_cqe_sp.type);
534 switch (cqe->rx_cqe_sp.type) {
535 case CORE_RX_CQE_TYPE_SLOW_PATH:
536 rc = qed_ll2_handle_slowpath(p_hwfn, p_ll2_conn,
539 case CORE_RX_CQE_TYPE_GSI_OFFLOAD:
540 case CORE_RX_CQE_TYPE_REGULAR:
541 rc = qed_ll2_rxq_handle_completion(p_hwfn, p_ll2_conn,
550 spin_unlock_irqrestore(&p_rx->lock, flags);
554 static void qed_ll2_rxq_flush(struct qed_hwfn *p_hwfn, u8 connection_handle)
556 struct qed_ll2_info *p_ll2_conn = NULL;
557 struct qed_ll2_rx_packet *p_pkt = NULL;
558 struct qed_ll2_rx_queue *p_rx;
560 p_ll2_conn = qed_ll2_handle_sanity_inactive(p_hwfn, connection_handle);
564 p_rx = &p_ll2_conn->rx_queue;
566 while (!list_empty(&p_rx->active_descq)) {
567 p_pkt = list_first_entry(&p_rx->active_descq,
568 struct qed_ll2_rx_packet, list_entry);
572 list_move_tail(&p_pkt->list_entry, &p_rx->free_descq);
574 if (p_ll2_conn->input.conn_type == QED_LL2_TYPE_OOO) {
575 struct qed_ooo_buffer *p_buffer;
577 p_buffer = (struct qed_ooo_buffer *)p_pkt->cookie;
578 qed_ooo_put_free_buffer(p_hwfn, p_hwfn->p_ooo_info,
581 dma_addr_t rx_buf_addr = p_pkt->rx_buf_addr;
582 void *cookie = p_pkt->cookie;
585 b_last = list_empty(&p_rx->active_descq);
586 p_ll2_conn->cbs.rx_release_cb(p_ll2_conn->cbs.cookie,
589 rx_buf_addr, b_last);
594 static int qed_ll2_lb_rxq_handler(struct qed_hwfn *p_hwfn,
595 struct qed_ll2_info *p_ll2_conn)
597 struct qed_ll2_rx_queue *p_rx = &p_ll2_conn->rx_queue;
598 u16 packet_length = 0, parse_flags = 0, vlan = 0;
599 struct qed_ll2_rx_packet *p_pkt = NULL;
600 u32 num_ooo_add_to_peninsula = 0, cid;
601 union core_rx_cqe_union *cqe = NULL;
602 u16 cq_new_idx = 0, cq_old_idx = 0;
603 struct qed_ooo_buffer *p_buffer;
604 struct ooo_opaque *iscsi_ooo;
605 u8 placement_offset = 0;
608 cq_new_idx = le16_to_cpu(*p_rx->p_fw_cons);
609 cq_old_idx = qed_chain_get_cons_idx(&p_rx->rcq_chain);
610 if (cq_new_idx == cq_old_idx)
613 while (cq_new_idx != cq_old_idx) {
614 struct core_rx_fast_path_cqe *p_cqe_fp;
616 cqe = qed_chain_consume(&p_rx->rcq_chain);
617 cq_old_idx = qed_chain_get_cons_idx(&p_rx->rcq_chain);
618 cqe_type = cqe->rx_cqe_sp.type;
620 if (cqe_type != CORE_RX_CQE_TYPE_REGULAR) {
622 "Got a non-regular LB LL2 completion [type 0x%02x]\n",
626 p_cqe_fp = &cqe->rx_cqe_fp;
628 placement_offset = p_cqe_fp->placement_offset;
629 parse_flags = le16_to_cpu(p_cqe_fp->parse_flags.flags);
630 packet_length = le16_to_cpu(p_cqe_fp->packet_length);
631 vlan = le16_to_cpu(p_cqe_fp->vlan);
632 iscsi_ooo = (struct ooo_opaque *)&p_cqe_fp->opaque_data;
633 qed_ooo_save_history_entry(p_hwfn, p_hwfn->p_ooo_info,
635 cid = le32_to_cpu(iscsi_ooo->cid);
637 /* Process delete isle first */
638 if (iscsi_ooo->drop_size)
639 qed_ooo_delete_isles(p_hwfn, p_hwfn->p_ooo_info, cid,
640 iscsi_ooo->drop_isle,
641 iscsi_ooo->drop_size);
643 if (iscsi_ooo->ooo_opcode == TCP_EVENT_NOP)
646 /* Now process create/add/join isles */
647 if (list_empty(&p_rx->active_descq)) {
649 "LL2 OOO RX chain has no submitted buffers\n"
654 p_pkt = list_first_entry(&p_rx->active_descq,
655 struct qed_ll2_rx_packet, list_entry);
657 if ((iscsi_ooo->ooo_opcode == TCP_EVENT_ADD_NEW_ISLE) ||
658 (iscsi_ooo->ooo_opcode == TCP_EVENT_ADD_ISLE_RIGHT) ||
659 (iscsi_ooo->ooo_opcode == TCP_EVENT_ADD_ISLE_LEFT) ||
660 (iscsi_ooo->ooo_opcode == TCP_EVENT_ADD_PEN) ||
661 (iscsi_ooo->ooo_opcode == TCP_EVENT_JOIN)) {
664 "LL2 OOO RX packet is not valid\n");
667 list_del(&p_pkt->list_entry);
668 p_buffer = (struct qed_ooo_buffer *)p_pkt->cookie;
669 p_buffer->packet_length = packet_length;
670 p_buffer->parse_flags = parse_flags;
671 p_buffer->vlan = vlan;
672 p_buffer->placement_offset = placement_offset;
673 qed_chain_consume(&p_rx->rxq_chain);
674 list_add_tail(&p_pkt->list_entry, &p_rx->free_descq);
676 switch (iscsi_ooo->ooo_opcode) {
677 case TCP_EVENT_ADD_NEW_ISLE:
678 qed_ooo_add_new_isle(p_hwfn,
684 case TCP_EVENT_ADD_ISLE_RIGHT:
685 qed_ooo_add_new_buffer(p_hwfn,
692 case TCP_EVENT_ADD_ISLE_LEFT:
693 qed_ooo_add_new_buffer(p_hwfn,
701 qed_ooo_add_new_buffer(p_hwfn,
704 iscsi_ooo->ooo_isle +
708 qed_ooo_join_isles(p_hwfn,
710 cid, iscsi_ooo->ooo_isle);
712 case TCP_EVENT_ADD_PEN:
713 num_ooo_add_to_peninsula++;
714 qed_ooo_put_ready_buffer(p_hwfn,
721 "Unexpected event (%d) TX OOO completion\n",
722 iscsi_ooo->ooo_opcode);
730 qed_ooo_submit_tx_buffers(struct qed_hwfn *p_hwfn,
731 struct qed_ll2_info *p_ll2_conn)
733 struct qed_ll2_tx_pkt_info tx_pkt;
734 struct qed_ooo_buffer *p_buffer;
736 dma_addr_t first_frag;
740 /* Submit Tx buffers here */
741 while ((p_buffer = qed_ooo_get_ready_buffer(p_hwfn,
742 p_hwfn->p_ooo_info))) {
746 first_frag = p_buffer->rx_buffer_phys_addr +
747 p_buffer->placement_offset;
748 SET_FIELD(bd_flags, CORE_TX_BD_DATA_FORCE_VLAN_MODE, 1);
749 SET_FIELD(bd_flags, CORE_TX_BD_DATA_L4_PROTOCOL, 1);
751 memset(&tx_pkt, 0, sizeof(tx_pkt));
752 tx_pkt.num_of_bds = 1;
753 tx_pkt.vlan = p_buffer->vlan;
754 tx_pkt.bd_flags = bd_flags;
755 tx_pkt.l4_hdr_offset_w = l4_hdr_offset_w;
756 tx_pkt.tx_dest = p_ll2_conn->tx_dest;
757 tx_pkt.first_frag = first_frag;
758 tx_pkt.first_frag_len = p_buffer->packet_length;
759 tx_pkt.cookie = p_buffer;
761 rc = qed_ll2_prepare_tx_packet(p_hwfn, p_ll2_conn->my_id,
764 qed_ooo_put_ready_buffer(p_hwfn, p_hwfn->p_ooo_info,
772 qed_ooo_submit_rx_buffers(struct qed_hwfn *p_hwfn,
773 struct qed_ll2_info *p_ll2_conn)
775 struct qed_ooo_buffer *p_buffer;
778 while ((p_buffer = qed_ooo_get_free_buffer(p_hwfn,
779 p_hwfn->p_ooo_info))) {
780 rc = qed_ll2_post_rx_buffer(p_hwfn,
782 p_buffer->rx_buffer_phys_addr,
785 qed_ooo_put_free_buffer(p_hwfn,
786 p_hwfn->p_ooo_info, p_buffer);
792 static int qed_ll2_lb_rxq_completion(struct qed_hwfn *p_hwfn, void *p_cookie)
794 struct qed_ll2_info *p_ll2_conn = (struct qed_ll2_info *)p_cookie;
797 rc = qed_ll2_lb_rxq_handler(p_hwfn, p_ll2_conn);
801 qed_ooo_submit_rx_buffers(p_hwfn, p_ll2_conn);
802 qed_ooo_submit_tx_buffers(p_hwfn, p_ll2_conn);
807 static int qed_ll2_lb_txq_completion(struct qed_hwfn *p_hwfn, void *p_cookie)
809 struct qed_ll2_info *p_ll2_conn = (struct qed_ll2_info *)p_cookie;
810 struct qed_ll2_tx_queue *p_tx = &p_ll2_conn->tx_queue;
811 struct qed_ll2_tx_packet *p_pkt = NULL;
812 struct qed_ooo_buffer *p_buffer;
813 bool b_dont_submit_rx = false;
814 u16 new_idx = 0, num_bds = 0;
817 new_idx = le16_to_cpu(*p_tx->p_fw_cons);
818 num_bds = ((s16)new_idx - (s16)p_tx->bds_idx);
824 if (list_empty(&p_tx->active_descq))
827 p_pkt = list_first_entry(&p_tx->active_descq,
828 struct qed_ll2_tx_packet, list_entry);
832 if (p_pkt->bd_used != 1) {
834 "Unexpectedly many BDs(%d) in TX OOO completion\n",
839 list_del(&p_pkt->list_entry);
843 qed_chain_consume(&p_tx->txq_chain);
845 p_buffer = (struct qed_ooo_buffer *)p_pkt->cookie;
846 list_add_tail(&p_pkt->list_entry, &p_tx->free_descq);
848 if (b_dont_submit_rx) {
849 qed_ooo_put_free_buffer(p_hwfn, p_hwfn->p_ooo_info,
854 rc = qed_ll2_post_rx_buffer(p_hwfn, p_ll2_conn->my_id,
855 p_buffer->rx_buffer_phys_addr, 0,
858 qed_ooo_put_free_buffer(p_hwfn,
859 p_hwfn->p_ooo_info, p_buffer);
860 b_dont_submit_rx = true;
864 qed_ooo_submit_tx_buffers(p_hwfn, p_ll2_conn);
869 static void qed_ll2_stop_ooo(struct qed_dev *cdev)
871 struct qed_hwfn *hwfn = QED_LEADING_HWFN(cdev);
872 u8 *handle = &hwfn->pf_params.iscsi_pf_params.ll2_ooo_queue_id;
874 DP_VERBOSE(cdev, QED_MSG_STORAGE, "Stopping LL2 OOO queue [%02x]\n",
877 qed_ll2_terminate_connection(hwfn, *handle);
878 qed_ll2_release_connection(hwfn, *handle);
879 *handle = QED_LL2_UNUSED_HANDLE;
882 static int qed_sp_ll2_rx_queue_start(struct qed_hwfn *p_hwfn,
883 struct qed_ll2_info *p_ll2_conn,
886 enum qed_ll2_conn_type conn_type = p_ll2_conn->input.conn_type;
887 struct qed_ll2_rx_queue *p_rx = &p_ll2_conn->rx_queue;
888 struct core_rx_start_ramrod_data *p_ramrod = NULL;
889 struct qed_spq_entry *p_ent = NULL;
890 struct qed_sp_init_data init_data;
895 memset(&init_data, 0, sizeof(init_data));
896 init_data.cid = p_ll2_conn->cid;
897 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
898 init_data.comp_mode = QED_SPQ_MODE_EBLOCK;
900 rc = qed_sp_init_request(p_hwfn, &p_ent,
901 CORE_RAMROD_RX_QUEUE_START,
902 PROTOCOLID_CORE, &init_data);
906 p_ramrod = &p_ent->ramrod.core_rx_queue_start;
908 p_ramrod->sb_id = cpu_to_le16(qed_int_get_sp_sb_id(p_hwfn));
909 p_ramrod->sb_index = p_rx->rx_sb_index;
910 p_ramrod->complete_event_flg = 1;
912 p_ramrod->mtu = cpu_to_le16(p_ll2_conn->input.mtu);
913 DMA_REGPAIR_LE(p_ramrod->bd_base, p_rx->rxq_chain.p_phys_addr);
914 cqe_pbl_size = (u16)qed_chain_get_page_cnt(&p_rx->rcq_chain);
915 p_ramrod->num_of_pbl_pages = cpu_to_le16(cqe_pbl_size);
916 DMA_REGPAIR_LE(p_ramrod->cqe_pbl_addr,
917 qed_chain_get_pbl_phys(&p_rx->rcq_chain));
919 p_ramrod->drop_ttl0_flg = p_ll2_conn->input.rx_drop_ttl0_flg;
920 p_ramrod->inner_vlan_stripping_en =
921 p_ll2_conn->input.rx_vlan_removal_en;
922 p_ramrod->queue_id = p_ll2_conn->queue_id;
923 p_ramrod->main_func_queue = p_ll2_conn->main_func_queue ? 1 : 0;
925 if (test_bit(QED_MF_LL2_NON_UNICAST, &p_hwfn->cdev->mf_bits) &&
926 p_ramrod->main_func_queue && conn_type != QED_LL2_TYPE_ROCE &&
927 conn_type != QED_LL2_TYPE_IWARP) {
928 p_ramrod->mf_si_bcast_accept_all = 1;
929 p_ramrod->mf_si_mcast_accept_all = 1;
931 p_ramrod->mf_si_bcast_accept_all = 0;
932 p_ramrod->mf_si_mcast_accept_all = 0;
935 p_ramrod->action_on_error.error_type = action_on_error;
936 p_ramrod->gsi_offload_flag = p_ll2_conn->input.gsi_enable;
937 return qed_spq_post(p_hwfn, p_ent, NULL);
940 static int qed_sp_ll2_tx_queue_start(struct qed_hwfn *p_hwfn,
941 struct qed_ll2_info *p_ll2_conn)
943 enum qed_ll2_conn_type conn_type = p_ll2_conn->input.conn_type;
944 struct qed_ll2_tx_queue *p_tx = &p_ll2_conn->tx_queue;
945 struct core_tx_start_ramrod_data *p_ramrod = NULL;
946 struct qed_spq_entry *p_ent = NULL;
947 struct qed_sp_init_data init_data;
948 u16 pq_id = 0, pbl_size;
951 if (!QED_LL2_TX_REGISTERED(p_ll2_conn))
954 if (p_ll2_conn->input.conn_type == QED_LL2_TYPE_OOO)
955 p_ll2_conn->tx_stats_en = 0;
957 p_ll2_conn->tx_stats_en = 1;
960 memset(&init_data, 0, sizeof(init_data));
961 init_data.cid = p_ll2_conn->cid;
962 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
963 init_data.comp_mode = QED_SPQ_MODE_EBLOCK;
965 rc = qed_sp_init_request(p_hwfn, &p_ent,
966 CORE_RAMROD_TX_QUEUE_START,
967 PROTOCOLID_CORE, &init_data);
971 p_ramrod = &p_ent->ramrod.core_tx_queue_start;
973 p_ramrod->sb_id = cpu_to_le16(qed_int_get_sp_sb_id(p_hwfn));
974 p_ramrod->sb_index = p_tx->tx_sb_index;
975 p_ramrod->mtu = cpu_to_le16(p_ll2_conn->input.mtu);
976 p_ramrod->stats_en = p_ll2_conn->tx_stats_en;
977 p_ramrod->stats_id = p_ll2_conn->tx_stats_id;
979 DMA_REGPAIR_LE(p_ramrod->pbl_base_addr,
980 qed_chain_get_pbl_phys(&p_tx->txq_chain));
981 pbl_size = qed_chain_get_page_cnt(&p_tx->txq_chain);
982 p_ramrod->pbl_size = cpu_to_le16(pbl_size);
984 switch (p_ll2_conn->input.tx_tc) {
986 pq_id = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_LB);
989 pq_id = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_OOO);
992 pq_id = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_OFLD);
996 p_ramrod->qm_pq_id = cpu_to_le16(pq_id);
999 case QED_LL2_TYPE_FCOE:
1000 p_ramrod->conn_type = PROTOCOLID_FCOE;
1002 case QED_LL2_TYPE_ISCSI:
1003 p_ramrod->conn_type = PROTOCOLID_ISCSI;
1005 case QED_LL2_TYPE_ROCE:
1006 p_ramrod->conn_type = PROTOCOLID_ROCE;
1008 case QED_LL2_TYPE_IWARP:
1009 p_ramrod->conn_type = PROTOCOLID_IWARP;
1011 case QED_LL2_TYPE_OOO:
1012 if (p_hwfn->hw_info.personality == QED_PCI_ISCSI)
1013 p_ramrod->conn_type = PROTOCOLID_ISCSI;
1015 p_ramrod->conn_type = PROTOCOLID_IWARP;
1018 p_ramrod->conn_type = PROTOCOLID_ETH;
1019 DP_NOTICE(p_hwfn, "Unknown connection type: %d\n", conn_type);
1022 p_ramrod->gsi_offload_flag = p_ll2_conn->input.gsi_enable;
1024 return qed_spq_post(p_hwfn, p_ent, NULL);
1027 static int qed_sp_ll2_rx_queue_stop(struct qed_hwfn *p_hwfn,
1028 struct qed_ll2_info *p_ll2_conn)
1030 struct core_rx_stop_ramrod_data *p_ramrod = NULL;
1031 struct qed_spq_entry *p_ent = NULL;
1032 struct qed_sp_init_data init_data;
1036 memset(&init_data, 0, sizeof(init_data));
1037 init_data.cid = p_ll2_conn->cid;
1038 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
1039 init_data.comp_mode = QED_SPQ_MODE_EBLOCK;
1041 rc = qed_sp_init_request(p_hwfn, &p_ent,
1042 CORE_RAMROD_RX_QUEUE_STOP,
1043 PROTOCOLID_CORE, &init_data);
1047 p_ramrod = &p_ent->ramrod.core_rx_queue_stop;
1049 p_ramrod->complete_event_flg = 1;
1050 p_ramrod->queue_id = p_ll2_conn->queue_id;
1052 return qed_spq_post(p_hwfn, p_ent, NULL);
1055 static int qed_sp_ll2_tx_queue_stop(struct qed_hwfn *p_hwfn,
1056 struct qed_ll2_info *p_ll2_conn)
1058 struct qed_spq_entry *p_ent = NULL;
1059 struct qed_sp_init_data init_data;
1063 memset(&init_data, 0, sizeof(init_data));
1064 init_data.cid = p_ll2_conn->cid;
1065 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
1066 init_data.comp_mode = QED_SPQ_MODE_EBLOCK;
1068 rc = qed_sp_init_request(p_hwfn, &p_ent,
1069 CORE_RAMROD_TX_QUEUE_STOP,
1070 PROTOCOLID_CORE, &init_data);
1074 return qed_spq_post(p_hwfn, p_ent, NULL);
1078 qed_ll2_acquire_connection_rx(struct qed_hwfn *p_hwfn,
1079 struct qed_ll2_info *p_ll2_info)
1081 struct qed_ll2_rx_packet *p_descq;
1085 if (!p_ll2_info->input.rx_num_desc)
1088 rc = qed_chain_alloc(p_hwfn->cdev,
1089 QED_CHAIN_USE_TO_CONSUME_PRODUCE,
1090 QED_CHAIN_MODE_NEXT_PTR,
1091 QED_CHAIN_CNT_TYPE_U16,
1092 p_ll2_info->input.rx_num_desc,
1093 sizeof(struct core_rx_bd),
1094 &p_ll2_info->rx_queue.rxq_chain, NULL);
1096 DP_NOTICE(p_hwfn, "Failed to allocate ll2 rxq chain\n");
1100 capacity = qed_chain_get_capacity(&p_ll2_info->rx_queue.rxq_chain);
1101 p_descq = kcalloc(capacity, sizeof(struct qed_ll2_rx_packet),
1105 DP_NOTICE(p_hwfn, "Failed to allocate ll2 Rx desc\n");
1108 p_ll2_info->rx_queue.descq_array = p_descq;
1110 rc = qed_chain_alloc(p_hwfn->cdev,
1111 QED_CHAIN_USE_TO_CONSUME_PRODUCE,
1113 QED_CHAIN_CNT_TYPE_U16,
1114 p_ll2_info->input.rx_num_desc,
1115 sizeof(struct core_rx_fast_path_cqe),
1116 &p_ll2_info->rx_queue.rcq_chain, NULL);
1118 DP_NOTICE(p_hwfn, "Failed to allocate ll2 rcq chain\n");
1122 DP_VERBOSE(p_hwfn, QED_MSG_LL2,
1123 "Allocated LL2 Rxq [Type %08x] with 0x%08x buffers\n",
1124 p_ll2_info->input.conn_type, p_ll2_info->input.rx_num_desc);
1130 static int qed_ll2_acquire_connection_tx(struct qed_hwfn *p_hwfn,
1131 struct qed_ll2_info *p_ll2_info)
1133 struct qed_ll2_tx_packet *p_descq;
1138 if (!p_ll2_info->input.tx_num_desc)
1141 rc = qed_chain_alloc(p_hwfn->cdev,
1142 QED_CHAIN_USE_TO_CONSUME_PRODUCE,
1144 QED_CHAIN_CNT_TYPE_U16,
1145 p_ll2_info->input.tx_num_desc,
1146 sizeof(struct core_tx_bd),
1147 &p_ll2_info->tx_queue.txq_chain, NULL);
1151 capacity = qed_chain_get_capacity(&p_ll2_info->tx_queue.txq_chain);
1152 /* First element is part of the packet, rest are flexibly added */
1153 desc_size = (sizeof(*p_descq) +
1154 (p_ll2_info->input.tx_max_bds_per_packet - 1) *
1155 sizeof(p_descq->bds_set));
1157 p_descq = kcalloc(capacity, desc_size, GFP_KERNEL);
1162 p_ll2_info->tx_queue.descq_mem = p_descq;
1164 DP_VERBOSE(p_hwfn, QED_MSG_LL2,
1165 "Allocated LL2 Txq [Type %08x] with 0x%08x buffers\n",
1166 p_ll2_info->input.conn_type, p_ll2_info->input.tx_num_desc);
1171 "Can't allocate memory for Tx LL2 with 0x%08x buffers\n",
1172 p_ll2_info->input.tx_num_desc);
1177 qed_ll2_acquire_connection_ooo(struct qed_hwfn *p_hwfn,
1178 struct qed_ll2_info *p_ll2_info, u16 mtu)
1180 struct qed_ooo_buffer *p_buf = NULL;
1185 if (p_ll2_info->input.conn_type != QED_LL2_TYPE_OOO)
1188 /* Correct number of requested OOO buffers if needed */
1189 if (!p_ll2_info->input.rx_num_ooo_buffers) {
1190 u16 num_desc = p_ll2_info->input.rx_num_desc;
1194 p_ll2_info->input.rx_num_ooo_buffers = num_desc * 2;
1197 for (buf_idx = 0; buf_idx < p_ll2_info->input.rx_num_ooo_buffers;
1199 p_buf = kzalloc(sizeof(*p_buf), GFP_KERNEL);
1205 p_buf->rx_buffer_size = mtu + 26 + ETH_CACHE_LINE_SIZE;
1206 p_buf->rx_buffer_size = (p_buf->rx_buffer_size +
1207 ETH_CACHE_LINE_SIZE - 1) &
1208 ~(ETH_CACHE_LINE_SIZE - 1);
1209 p_virt = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev,
1210 p_buf->rx_buffer_size,
1211 &p_buf->rx_buffer_phys_addr,
1219 p_buf->rx_buffer_virt_addr = p_virt;
1220 qed_ooo_put_free_buffer(p_hwfn, p_hwfn->p_ooo_info, p_buf);
1223 DP_VERBOSE(p_hwfn, QED_MSG_LL2,
1224 "Allocated [%04x] LL2 OOO buffers [each of size 0x%08x]\n",
1225 p_ll2_info->input.rx_num_ooo_buffers, p_buf->rx_buffer_size);
1232 qed_ll2_set_cbs(struct qed_ll2_info *p_ll2_info, const struct qed_ll2_cbs *cbs)
1234 if (!cbs || (!cbs->rx_comp_cb ||
1235 !cbs->rx_release_cb ||
1236 !cbs->tx_comp_cb || !cbs->tx_release_cb || !cbs->cookie))
1239 p_ll2_info->cbs.rx_comp_cb = cbs->rx_comp_cb;
1240 p_ll2_info->cbs.rx_release_cb = cbs->rx_release_cb;
1241 p_ll2_info->cbs.tx_comp_cb = cbs->tx_comp_cb;
1242 p_ll2_info->cbs.tx_release_cb = cbs->tx_release_cb;
1243 p_ll2_info->cbs.slowpath_cb = cbs->slowpath_cb;
1244 p_ll2_info->cbs.cookie = cbs->cookie;
1249 static enum core_error_handle
1250 qed_ll2_get_error_choice(enum qed_ll2_error_handle err)
1253 case QED_LL2_DROP_PACKET:
1254 return LL2_DROP_PACKET;
1255 case QED_LL2_DO_NOTHING:
1256 return LL2_DO_NOTHING;
1257 case QED_LL2_ASSERT:
1260 return LL2_DO_NOTHING;
1264 int qed_ll2_acquire_connection(void *cxt, struct qed_ll2_acquire_data *data)
1266 struct qed_hwfn *p_hwfn = cxt;
1267 qed_int_comp_cb_t comp_rx_cb, comp_tx_cb;
1268 struct qed_ll2_info *p_ll2_info = NULL;
1272 if (!data->p_connection_handle || !p_hwfn->p_ll2_info)
1275 /* Find a free connection to be used */
1276 for (i = 0; (i < QED_MAX_NUM_OF_LL2_CONNECTIONS); i++) {
1277 mutex_lock(&p_hwfn->p_ll2_info[i].mutex);
1278 if (p_hwfn->p_ll2_info[i].b_active) {
1279 mutex_unlock(&p_hwfn->p_ll2_info[i].mutex);
1283 p_hwfn->p_ll2_info[i].b_active = true;
1284 p_ll2_info = &p_hwfn->p_ll2_info[i];
1285 mutex_unlock(&p_hwfn->p_ll2_info[i].mutex);
1291 memcpy(&p_ll2_info->input, &data->input, sizeof(p_ll2_info->input));
1293 switch (data->input.tx_dest) {
1294 case QED_LL2_TX_DEST_NW:
1295 p_ll2_info->tx_dest = CORE_TX_DEST_NW;
1297 case QED_LL2_TX_DEST_LB:
1298 p_ll2_info->tx_dest = CORE_TX_DEST_LB;
1300 case QED_LL2_TX_DEST_DROP:
1301 p_ll2_info->tx_dest = CORE_TX_DEST_DROP;
1307 if (data->input.conn_type == QED_LL2_TYPE_OOO ||
1308 data->input.secondary_queue)
1309 p_ll2_info->main_func_queue = false;
1311 p_ll2_info->main_func_queue = true;
1313 /* Correct maximum number of Tx BDs */
1314 p_tx_max = &p_ll2_info->input.tx_max_bds_per_packet;
1316 *p_tx_max = CORE_LL2_TX_MAX_BDS_PER_PACKET;
1318 *p_tx_max = min_t(u8, *p_tx_max,
1319 CORE_LL2_TX_MAX_BDS_PER_PACKET);
1321 rc = qed_ll2_set_cbs(p_ll2_info, data->cbs);
1323 DP_NOTICE(p_hwfn, "Invalid callback functions\n");
1324 goto q_allocate_fail;
1327 rc = qed_ll2_acquire_connection_rx(p_hwfn, p_ll2_info);
1329 goto q_allocate_fail;
1331 rc = qed_ll2_acquire_connection_tx(p_hwfn, p_ll2_info);
1333 goto q_allocate_fail;
1335 rc = qed_ll2_acquire_connection_ooo(p_hwfn, p_ll2_info,
1338 goto q_allocate_fail;
1340 /* Register callbacks for the Rx/Tx queues */
1341 if (data->input.conn_type == QED_LL2_TYPE_OOO) {
1342 comp_rx_cb = qed_ll2_lb_rxq_completion;
1343 comp_tx_cb = qed_ll2_lb_txq_completion;
1345 comp_rx_cb = qed_ll2_rxq_completion;
1346 comp_tx_cb = qed_ll2_txq_completion;
1349 if (data->input.rx_num_desc) {
1350 qed_int_register_cb(p_hwfn, comp_rx_cb,
1351 &p_hwfn->p_ll2_info[i],
1352 &p_ll2_info->rx_queue.rx_sb_index,
1353 &p_ll2_info->rx_queue.p_fw_cons);
1354 p_ll2_info->rx_queue.b_cb_registred = true;
1357 if (data->input.tx_num_desc) {
1358 qed_int_register_cb(p_hwfn,
1360 &p_hwfn->p_ll2_info[i],
1361 &p_ll2_info->tx_queue.tx_sb_index,
1362 &p_ll2_info->tx_queue.p_fw_cons);
1363 p_ll2_info->tx_queue.b_cb_registred = true;
1366 *data->p_connection_handle = i;
1370 qed_ll2_release_connection(p_hwfn, i);
1374 static int qed_ll2_establish_connection_rx(struct qed_hwfn *p_hwfn,
1375 struct qed_ll2_info *p_ll2_conn)
1377 enum qed_ll2_error_handle error_input;
1378 enum core_error_handle error_mode;
1379 u8 action_on_error = 0;
1381 if (!QED_LL2_RX_REGISTERED(p_ll2_conn))
1384 DIRECT_REG_WR(p_ll2_conn->rx_queue.set_prod_addr, 0x0);
1385 error_input = p_ll2_conn->input.ai_err_packet_too_big;
1386 error_mode = qed_ll2_get_error_choice(error_input);
1387 SET_FIELD(action_on_error,
1388 CORE_RX_ACTION_ON_ERROR_PACKET_TOO_BIG, error_mode);
1389 error_input = p_ll2_conn->input.ai_err_no_buf;
1390 error_mode = qed_ll2_get_error_choice(error_input);
1391 SET_FIELD(action_on_error, CORE_RX_ACTION_ON_ERROR_NO_BUFF, error_mode);
1393 return qed_sp_ll2_rx_queue_start(p_hwfn, p_ll2_conn, action_on_error);
1397 qed_ll2_establish_connection_ooo(struct qed_hwfn *p_hwfn,
1398 struct qed_ll2_info *p_ll2_conn)
1400 if (p_ll2_conn->input.conn_type != QED_LL2_TYPE_OOO)
1403 qed_ooo_release_all_isles(p_hwfn, p_hwfn->p_ooo_info);
1404 qed_ooo_submit_rx_buffers(p_hwfn, p_ll2_conn);
1407 int qed_ll2_establish_connection(void *cxt, u8 connection_handle)
1409 struct qed_hwfn *p_hwfn = cxt;
1410 struct qed_ll2_info *p_ll2_conn;
1411 struct qed_ll2_tx_packet *p_pkt;
1412 struct qed_ll2_rx_queue *p_rx;
1413 struct qed_ll2_tx_queue *p_tx;
1414 struct qed_ptt *p_ptt;
1420 p_ptt = qed_ptt_acquire(p_hwfn);
1424 p_ll2_conn = qed_ll2_handle_sanity_lock(p_hwfn, connection_handle);
1430 p_rx = &p_ll2_conn->rx_queue;
1431 p_tx = &p_ll2_conn->tx_queue;
1433 qed_chain_reset(&p_rx->rxq_chain);
1434 qed_chain_reset(&p_rx->rcq_chain);
1435 INIT_LIST_HEAD(&p_rx->active_descq);
1436 INIT_LIST_HEAD(&p_rx->free_descq);
1437 INIT_LIST_HEAD(&p_rx->posting_descq);
1438 spin_lock_init(&p_rx->lock);
1439 capacity = qed_chain_get_capacity(&p_rx->rxq_chain);
1440 for (i = 0; i < capacity; i++)
1441 list_add_tail(&p_rx->descq_array[i].list_entry,
1443 *p_rx->p_fw_cons = 0;
1445 qed_chain_reset(&p_tx->txq_chain);
1446 INIT_LIST_HEAD(&p_tx->active_descq);
1447 INIT_LIST_HEAD(&p_tx->free_descq);
1448 INIT_LIST_HEAD(&p_tx->sending_descq);
1449 spin_lock_init(&p_tx->lock);
1450 capacity = qed_chain_get_capacity(&p_tx->txq_chain);
1451 /* First element is part of the packet, rest are flexibly added */
1452 desc_size = (sizeof(*p_pkt) +
1453 (p_ll2_conn->input.tx_max_bds_per_packet - 1) *
1454 sizeof(p_pkt->bds_set));
1456 for (i = 0; i < capacity; i++) {
1457 p_pkt = p_tx->descq_mem + desc_size * i;
1458 list_add_tail(&p_pkt->list_entry, &p_tx->free_descq);
1460 p_tx->cur_completing_bd_idx = 0;
1462 p_tx->b_completing_packet = false;
1463 p_tx->cur_send_packet = NULL;
1464 p_tx->cur_send_frag_num = 0;
1465 p_tx->cur_completing_frag_num = 0;
1466 *p_tx->p_fw_cons = 0;
1468 rc = qed_cxt_acquire_cid(p_hwfn, PROTOCOLID_CORE, &p_ll2_conn->cid);
1472 qid = p_hwfn->hw_info.resc_start[QED_LL2_QUEUE] + connection_handle;
1473 p_ll2_conn->queue_id = qid;
1474 p_ll2_conn->tx_stats_id = qid;
1475 p_rx->set_prod_addr = (u8 __iomem *)p_hwfn->regview +
1476 GTT_BAR0_MAP_REG_TSDM_RAM +
1477 TSTORM_LL2_RX_PRODS_OFFSET(qid);
1478 p_tx->doorbell_addr = (u8 __iomem *)p_hwfn->doorbells +
1479 qed_db_addr(p_ll2_conn->cid,
1482 rc = qed_ll2_establish_connection_rx(p_hwfn, p_ll2_conn);
1486 rc = qed_sp_ll2_tx_queue_start(p_hwfn, p_ll2_conn);
1490 if (!QED_IS_RDMA_PERSONALITY(p_hwfn))
1491 qed_wr(p_hwfn, p_ptt, PRS_REG_USE_LIGHT_L2, 1);
1493 qed_ll2_establish_connection_ooo(p_hwfn, p_ll2_conn);
1495 if (p_ll2_conn->input.conn_type == QED_LL2_TYPE_FCOE) {
1496 qed_llh_add_protocol_filter(p_hwfn, p_ptt,
1498 QED_LLH_FILTER_ETHERTYPE);
1499 qed_llh_add_protocol_filter(p_hwfn, p_ptt,
1501 QED_LLH_FILTER_ETHERTYPE);
1505 qed_ptt_release(p_hwfn, p_ptt);
1509 static void qed_ll2_post_rx_buffer_notify_fw(struct qed_hwfn *p_hwfn,
1510 struct qed_ll2_rx_queue *p_rx,
1511 struct qed_ll2_rx_packet *p_curp)
1513 struct qed_ll2_rx_packet *p_posting_packet = NULL;
1514 struct core_ll2_rx_prod rx_prod = { 0, 0, 0 };
1515 bool b_notify_fw = false;
1516 u16 bd_prod, cq_prod;
1518 /* This handles the flushing of already posted buffers */
1519 while (!list_empty(&p_rx->posting_descq)) {
1520 p_posting_packet = list_first_entry(&p_rx->posting_descq,
1521 struct qed_ll2_rx_packet,
1523 list_move_tail(&p_posting_packet->list_entry,
1524 &p_rx->active_descq);
1528 /* This handles the supplied packet [if there is one] */
1530 list_add_tail(&p_curp->list_entry, &p_rx->active_descq);
1537 bd_prod = qed_chain_get_prod_idx(&p_rx->rxq_chain);
1538 cq_prod = qed_chain_get_prod_idx(&p_rx->rcq_chain);
1539 rx_prod.bd_prod = cpu_to_le16(bd_prod);
1540 rx_prod.cqe_prod = cpu_to_le16(cq_prod);
1541 DIRECT_REG_WR(p_rx->set_prod_addr, *((u32 *)&rx_prod));
1544 int qed_ll2_post_rx_buffer(void *cxt,
1545 u8 connection_handle,
1547 u16 buf_len, void *cookie, u8 notify_fw)
1549 struct qed_hwfn *p_hwfn = cxt;
1550 struct core_rx_bd_with_buff_len *p_curb = NULL;
1551 struct qed_ll2_rx_packet *p_curp = NULL;
1552 struct qed_ll2_info *p_ll2_conn;
1553 struct qed_ll2_rx_queue *p_rx;
1554 unsigned long flags;
1558 p_ll2_conn = qed_ll2_handle_sanity(p_hwfn, connection_handle);
1561 p_rx = &p_ll2_conn->rx_queue;
1563 spin_lock_irqsave(&p_rx->lock, flags);
1564 if (!list_empty(&p_rx->free_descq))
1565 p_curp = list_first_entry(&p_rx->free_descq,
1566 struct qed_ll2_rx_packet, list_entry);
1568 if (qed_chain_get_elem_left(&p_rx->rxq_chain) &&
1569 qed_chain_get_elem_left(&p_rx->rcq_chain)) {
1570 p_data = qed_chain_produce(&p_rx->rxq_chain);
1571 p_curb = (struct core_rx_bd_with_buff_len *)p_data;
1572 qed_chain_produce(&p_rx->rcq_chain);
1576 /* If we're lacking entires, let's try to flush buffers to FW */
1577 if (!p_curp || !p_curb) {
1583 /* We have an Rx packet we can fill */
1584 DMA_REGPAIR_LE(p_curb->addr, addr);
1585 p_curb->buff_length = cpu_to_le16(buf_len);
1586 p_curp->rx_buf_addr = addr;
1587 p_curp->cookie = cookie;
1588 p_curp->rxq_bd = p_curb;
1589 p_curp->buf_length = buf_len;
1590 list_del(&p_curp->list_entry);
1592 /* Check if we only want to enqueue this packet without informing FW */
1594 list_add_tail(&p_curp->list_entry, &p_rx->posting_descq);
1599 qed_ll2_post_rx_buffer_notify_fw(p_hwfn, p_rx, p_curp);
1601 spin_unlock_irqrestore(&p_rx->lock, flags);
1605 static void qed_ll2_prepare_tx_packet_set(struct qed_hwfn *p_hwfn,
1606 struct qed_ll2_tx_queue *p_tx,
1607 struct qed_ll2_tx_packet *p_curp,
1608 struct qed_ll2_tx_pkt_info *pkt,
1611 list_del(&p_curp->list_entry);
1612 p_curp->cookie = pkt->cookie;
1613 p_curp->bd_used = pkt->num_of_bds;
1614 p_curp->notify_fw = notify_fw;
1615 p_tx->cur_send_packet = p_curp;
1616 p_tx->cur_send_frag_num = 0;
1618 p_curp->bds_set[p_tx->cur_send_frag_num].tx_frag = pkt->first_frag;
1619 p_curp->bds_set[p_tx->cur_send_frag_num].frag_len = pkt->first_frag_len;
1620 p_tx->cur_send_frag_num++;
1624 qed_ll2_prepare_tx_packet_set_bd(struct qed_hwfn *p_hwfn,
1625 struct qed_ll2_info *p_ll2,
1626 struct qed_ll2_tx_packet *p_curp,
1627 struct qed_ll2_tx_pkt_info *pkt)
1629 struct qed_chain *p_tx_chain = &p_ll2->tx_queue.txq_chain;
1630 u16 prod_idx = qed_chain_get_prod_idx(p_tx_chain);
1631 struct core_tx_bd *start_bd = NULL;
1632 enum core_roce_flavor_type roce_flavor;
1633 enum core_tx_dest tx_dest;
1634 u16 bd_data = 0, frag_idx;
1636 roce_flavor = (pkt->qed_roce_flavor == QED_LL2_ROCE) ? CORE_ROCE
1639 switch (pkt->tx_dest) {
1640 case QED_LL2_TX_DEST_NW:
1641 tx_dest = CORE_TX_DEST_NW;
1643 case QED_LL2_TX_DEST_LB:
1644 tx_dest = CORE_TX_DEST_LB;
1646 case QED_LL2_TX_DEST_DROP:
1647 tx_dest = CORE_TX_DEST_DROP;
1650 tx_dest = CORE_TX_DEST_LB;
1654 start_bd = (struct core_tx_bd *)qed_chain_produce(p_tx_chain);
1655 if (QED_IS_IWARP_PERSONALITY(p_hwfn) &&
1656 p_ll2->input.conn_type == QED_LL2_TYPE_OOO)
1657 start_bd->nw_vlan_or_lb_echo =
1658 cpu_to_le16(IWARP_LL2_IN_ORDER_TX_QUEUE);
1660 start_bd->nw_vlan_or_lb_echo = cpu_to_le16(pkt->vlan);
1661 SET_FIELD(start_bd->bitfield1, CORE_TX_BD_L4_HDR_OFFSET_W,
1662 cpu_to_le16(pkt->l4_hdr_offset_w));
1663 SET_FIELD(start_bd->bitfield1, CORE_TX_BD_TX_DST, tx_dest);
1664 bd_data |= pkt->bd_flags;
1665 SET_FIELD(bd_data, CORE_TX_BD_DATA_START_BD, 0x1);
1666 SET_FIELD(bd_data, CORE_TX_BD_DATA_NBDS, pkt->num_of_bds);
1667 SET_FIELD(bd_data, CORE_TX_BD_DATA_ROCE_FLAV, roce_flavor);
1668 SET_FIELD(bd_data, CORE_TX_BD_DATA_IP_CSUM, !!(pkt->enable_ip_cksum));
1669 SET_FIELD(bd_data, CORE_TX_BD_DATA_L4_CSUM, !!(pkt->enable_l4_cksum));
1670 SET_FIELD(bd_data, CORE_TX_BD_DATA_IP_LEN, !!(pkt->calc_ip_len));
1671 start_bd->bd_data.as_bitfield = cpu_to_le16(bd_data);
1672 DMA_REGPAIR_LE(start_bd->addr, pkt->first_frag);
1673 start_bd->nbytes = cpu_to_le16(pkt->first_frag_len);
1676 (NETIF_MSG_TX_QUEUED | QED_MSG_LL2),
1677 "LL2 [q 0x%02x cid 0x%08x type 0x%08x] Tx Producer at [0x%04x] - set with a %04x bytes %02x BDs buffer at %08x:%08x\n",
1680 p_ll2->input.conn_type,
1682 pkt->first_frag_len,
1684 le32_to_cpu(start_bd->addr.hi),
1685 le32_to_cpu(start_bd->addr.lo));
1687 if (p_ll2->tx_queue.cur_send_frag_num == pkt->num_of_bds)
1690 /* Need to provide the packet with additional BDs for frags */
1691 for (frag_idx = p_ll2->tx_queue.cur_send_frag_num;
1692 frag_idx < pkt->num_of_bds; frag_idx++) {
1693 struct core_tx_bd **p_bd = &p_curp->bds_set[frag_idx].txq_bd;
1695 *p_bd = (struct core_tx_bd *)qed_chain_produce(p_tx_chain);
1696 (*p_bd)->bd_data.as_bitfield = 0;
1697 (*p_bd)->bitfield1 = 0;
1698 p_curp->bds_set[frag_idx].tx_frag = 0;
1699 p_curp->bds_set[frag_idx].frag_len = 0;
1703 /* This should be called while the Txq spinlock is being held */
1704 static void qed_ll2_tx_packet_notify(struct qed_hwfn *p_hwfn,
1705 struct qed_ll2_info *p_ll2_conn)
1707 bool b_notify = p_ll2_conn->tx_queue.cur_send_packet->notify_fw;
1708 struct qed_ll2_tx_queue *p_tx = &p_ll2_conn->tx_queue;
1709 struct qed_ll2_tx_packet *p_pkt = NULL;
1710 struct core_db_data db_msg = { 0, 0, 0 };
1713 /* If there are missing BDs, don't do anything now */
1714 if (p_ll2_conn->tx_queue.cur_send_frag_num !=
1715 p_ll2_conn->tx_queue.cur_send_packet->bd_used)
1718 /* Push the current packet to the list and clean after it */
1719 list_add_tail(&p_ll2_conn->tx_queue.cur_send_packet->list_entry,
1720 &p_ll2_conn->tx_queue.sending_descq);
1721 p_ll2_conn->tx_queue.cur_send_packet = NULL;
1722 p_ll2_conn->tx_queue.cur_send_frag_num = 0;
1724 /* Notify FW of packet only if requested to */
1728 bd_prod = qed_chain_get_prod_idx(&p_ll2_conn->tx_queue.txq_chain);
1730 while (!list_empty(&p_tx->sending_descq)) {
1731 p_pkt = list_first_entry(&p_tx->sending_descq,
1732 struct qed_ll2_tx_packet, list_entry);
1736 list_move_tail(&p_pkt->list_entry, &p_tx->active_descq);
1739 SET_FIELD(db_msg.params, CORE_DB_DATA_DEST, DB_DEST_XCM);
1740 SET_FIELD(db_msg.params, CORE_DB_DATA_AGG_CMD, DB_AGG_CMD_SET);
1741 SET_FIELD(db_msg.params, CORE_DB_DATA_AGG_VAL_SEL,
1742 DQ_XCM_CORE_TX_BD_PROD_CMD);
1743 db_msg.agg_flags = DQ_XCM_CORE_DQ_CF_CMD;
1744 db_msg.spq_prod = cpu_to_le16(bd_prod);
1746 /* Make sure the BDs data is updated before ringing the doorbell */
1749 DIRECT_REG_WR(p_tx->doorbell_addr, *((u32 *)&db_msg));
1752 (NETIF_MSG_TX_QUEUED | QED_MSG_LL2),
1753 "LL2 [q 0x%02x cid 0x%08x type 0x%08x] Doorbelled [producer 0x%04x]\n",
1754 p_ll2_conn->queue_id,
1756 p_ll2_conn->input.conn_type, db_msg.spq_prod);
1759 int qed_ll2_prepare_tx_packet(void *cxt,
1760 u8 connection_handle,
1761 struct qed_ll2_tx_pkt_info *pkt,
1764 struct qed_hwfn *p_hwfn = cxt;
1765 struct qed_ll2_tx_packet *p_curp = NULL;
1766 struct qed_ll2_info *p_ll2_conn = NULL;
1767 struct qed_ll2_tx_queue *p_tx;
1768 struct qed_chain *p_tx_chain;
1769 unsigned long flags;
1772 p_ll2_conn = qed_ll2_handle_sanity(p_hwfn, connection_handle);
1775 p_tx = &p_ll2_conn->tx_queue;
1776 p_tx_chain = &p_tx->txq_chain;
1778 if (pkt->num_of_bds > p_ll2_conn->input.tx_max_bds_per_packet)
1781 spin_lock_irqsave(&p_tx->lock, flags);
1782 if (p_tx->cur_send_packet) {
1787 /* Get entry, but only if we have tx elements for it */
1788 if (!list_empty(&p_tx->free_descq))
1789 p_curp = list_first_entry(&p_tx->free_descq,
1790 struct qed_ll2_tx_packet, list_entry);
1791 if (p_curp && qed_chain_get_elem_left(p_tx_chain) < pkt->num_of_bds)
1799 /* Prepare packet and BD, and perhaps send a doorbell to FW */
1800 qed_ll2_prepare_tx_packet_set(p_hwfn, p_tx, p_curp, pkt, notify_fw);
1802 qed_ll2_prepare_tx_packet_set_bd(p_hwfn, p_ll2_conn, p_curp, pkt);
1804 qed_ll2_tx_packet_notify(p_hwfn, p_ll2_conn);
1807 spin_unlock_irqrestore(&p_tx->lock, flags);
1811 int qed_ll2_set_fragment_of_tx_packet(void *cxt,
1812 u8 connection_handle,
1813 dma_addr_t addr, u16 nbytes)
1815 struct qed_ll2_tx_packet *p_cur_send_packet = NULL;
1816 struct qed_hwfn *p_hwfn = cxt;
1817 struct qed_ll2_info *p_ll2_conn = NULL;
1818 u16 cur_send_frag_num = 0;
1819 struct core_tx_bd *p_bd;
1820 unsigned long flags;
1822 p_ll2_conn = qed_ll2_handle_sanity(p_hwfn, connection_handle);
1826 if (!p_ll2_conn->tx_queue.cur_send_packet)
1829 p_cur_send_packet = p_ll2_conn->tx_queue.cur_send_packet;
1830 cur_send_frag_num = p_ll2_conn->tx_queue.cur_send_frag_num;
1832 if (cur_send_frag_num >= p_cur_send_packet->bd_used)
1835 /* Fill the BD information, and possibly notify FW */
1836 p_bd = p_cur_send_packet->bds_set[cur_send_frag_num].txq_bd;
1837 DMA_REGPAIR_LE(p_bd->addr, addr);
1838 p_bd->nbytes = cpu_to_le16(nbytes);
1839 p_cur_send_packet->bds_set[cur_send_frag_num].tx_frag = addr;
1840 p_cur_send_packet->bds_set[cur_send_frag_num].frag_len = nbytes;
1842 p_ll2_conn->tx_queue.cur_send_frag_num++;
1844 spin_lock_irqsave(&p_ll2_conn->tx_queue.lock, flags);
1845 qed_ll2_tx_packet_notify(p_hwfn, p_ll2_conn);
1846 spin_unlock_irqrestore(&p_ll2_conn->tx_queue.lock, flags);
1851 int qed_ll2_terminate_connection(void *cxt, u8 connection_handle)
1853 struct qed_hwfn *p_hwfn = cxt;
1854 struct qed_ll2_info *p_ll2_conn = NULL;
1856 struct qed_ptt *p_ptt;
1858 p_ptt = qed_ptt_acquire(p_hwfn);
1862 p_ll2_conn = qed_ll2_handle_sanity_lock(p_hwfn, connection_handle);
1868 /* Stop Tx & Rx of connection, if needed */
1869 if (QED_LL2_TX_REGISTERED(p_ll2_conn)) {
1870 rc = qed_sp_ll2_tx_queue_stop(p_hwfn, p_ll2_conn);
1873 qed_ll2_txq_flush(p_hwfn, connection_handle);
1876 if (QED_LL2_RX_REGISTERED(p_ll2_conn)) {
1877 rc = qed_sp_ll2_rx_queue_stop(p_hwfn, p_ll2_conn);
1880 qed_ll2_rxq_flush(p_hwfn, connection_handle);
1883 if (p_ll2_conn->input.conn_type == QED_LL2_TYPE_OOO)
1884 qed_ooo_release_all_isles(p_hwfn, p_hwfn->p_ooo_info);
1886 if (p_ll2_conn->input.conn_type == QED_LL2_TYPE_FCOE) {
1887 qed_llh_remove_protocol_filter(p_hwfn, p_ptt,
1889 QED_LLH_FILTER_ETHERTYPE);
1890 qed_llh_remove_protocol_filter(p_hwfn, p_ptt,
1892 QED_LLH_FILTER_ETHERTYPE);
1896 qed_ptt_release(p_hwfn, p_ptt);
1900 static void qed_ll2_release_connection_ooo(struct qed_hwfn *p_hwfn,
1901 struct qed_ll2_info *p_ll2_conn)
1903 struct qed_ooo_buffer *p_buffer;
1905 if (p_ll2_conn->input.conn_type != QED_LL2_TYPE_OOO)
1908 qed_ooo_release_all_isles(p_hwfn, p_hwfn->p_ooo_info);
1909 while ((p_buffer = qed_ooo_get_free_buffer(p_hwfn,
1910 p_hwfn->p_ooo_info))) {
1911 dma_free_coherent(&p_hwfn->cdev->pdev->dev,
1912 p_buffer->rx_buffer_size,
1913 p_buffer->rx_buffer_virt_addr,
1914 p_buffer->rx_buffer_phys_addr);
1919 void qed_ll2_release_connection(void *cxt, u8 connection_handle)
1921 struct qed_hwfn *p_hwfn = cxt;
1922 struct qed_ll2_info *p_ll2_conn = NULL;
1924 p_ll2_conn = qed_ll2_handle_sanity(p_hwfn, connection_handle);
1928 if (QED_LL2_RX_REGISTERED(p_ll2_conn)) {
1929 p_ll2_conn->rx_queue.b_cb_registred = false;
1930 qed_int_unregister_cb(p_hwfn, p_ll2_conn->rx_queue.rx_sb_index);
1933 if (QED_LL2_TX_REGISTERED(p_ll2_conn)) {
1934 p_ll2_conn->tx_queue.b_cb_registred = false;
1935 qed_int_unregister_cb(p_hwfn, p_ll2_conn->tx_queue.tx_sb_index);
1938 kfree(p_ll2_conn->tx_queue.descq_mem);
1939 qed_chain_free(p_hwfn->cdev, &p_ll2_conn->tx_queue.txq_chain);
1941 kfree(p_ll2_conn->rx_queue.descq_array);
1942 qed_chain_free(p_hwfn->cdev, &p_ll2_conn->rx_queue.rxq_chain);
1943 qed_chain_free(p_hwfn->cdev, &p_ll2_conn->rx_queue.rcq_chain);
1945 qed_cxt_release_cid(p_hwfn, p_ll2_conn->cid);
1947 qed_ll2_release_connection_ooo(p_hwfn, p_ll2_conn);
1949 mutex_lock(&p_ll2_conn->mutex);
1950 p_ll2_conn->b_active = false;
1951 mutex_unlock(&p_ll2_conn->mutex);
1954 int qed_ll2_alloc(struct qed_hwfn *p_hwfn)
1956 struct qed_ll2_info *p_ll2_connections;
1959 /* Allocate LL2's set struct */
1960 p_ll2_connections = kcalloc(QED_MAX_NUM_OF_LL2_CONNECTIONS,
1961 sizeof(struct qed_ll2_info), GFP_KERNEL);
1962 if (!p_ll2_connections) {
1963 DP_NOTICE(p_hwfn, "Failed to allocate `struct qed_ll2'\n");
1967 for (i = 0; i < QED_MAX_NUM_OF_LL2_CONNECTIONS; i++)
1968 p_ll2_connections[i].my_id = i;
1970 p_hwfn->p_ll2_info = p_ll2_connections;
1974 void qed_ll2_setup(struct qed_hwfn *p_hwfn)
1978 for (i = 0; i < QED_MAX_NUM_OF_LL2_CONNECTIONS; i++)
1979 mutex_init(&p_hwfn->p_ll2_info[i].mutex);
1982 void qed_ll2_free(struct qed_hwfn *p_hwfn)
1984 if (!p_hwfn->p_ll2_info)
1987 kfree(p_hwfn->p_ll2_info);
1988 p_hwfn->p_ll2_info = NULL;
1991 static void _qed_ll2_get_port_stats(struct qed_hwfn *p_hwfn,
1992 struct qed_ptt *p_ptt,
1993 struct qed_ll2_stats *p_stats)
1995 struct core_ll2_port_stats port_stats;
1997 memset(&port_stats, 0, sizeof(port_stats));
1998 qed_memcpy_from(p_hwfn, p_ptt, &port_stats,
1999 BAR0_MAP_REG_TSDM_RAM +
2000 TSTORM_LL2_PORT_STAT_OFFSET(MFW_PORT(p_hwfn)),
2001 sizeof(port_stats));
2003 p_stats->gsi_invalid_hdr = HILO_64_REGPAIR(port_stats.gsi_invalid_hdr);
2004 p_stats->gsi_invalid_pkt_length =
2005 HILO_64_REGPAIR(port_stats.gsi_invalid_pkt_length);
2006 p_stats->gsi_unsupported_pkt_typ =
2007 HILO_64_REGPAIR(port_stats.gsi_unsupported_pkt_typ);
2008 p_stats->gsi_crcchksm_error =
2009 HILO_64_REGPAIR(port_stats.gsi_crcchksm_error);
2012 static void _qed_ll2_get_tstats(struct qed_hwfn *p_hwfn,
2013 struct qed_ptt *p_ptt,
2014 struct qed_ll2_info *p_ll2_conn,
2015 struct qed_ll2_stats *p_stats)
2017 struct core_ll2_tstorm_per_queue_stat tstats;
2018 u8 qid = p_ll2_conn->queue_id;
2021 memset(&tstats, 0, sizeof(tstats));
2022 tstats_addr = BAR0_MAP_REG_TSDM_RAM +
2023 CORE_LL2_TSTORM_PER_QUEUE_STAT_OFFSET(qid);
2024 qed_memcpy_from(p_hwfn, p_ptt, &tstats, tstats_addr, sizeof(tstats));
2026 p_stats->packet_too_big_discard =
2027 HILO_64_REGPAIR(tstats.packet_too_big_discard);
2028 p_stats->no_buff_discard = HILO_64_REGPAIR(tstats.no_buff_discard);
2031 static void _qed_ll2_get_ustats(struct qed_hwfn *p_hwfn,
2032 struct qed_ptt *p_ptt,
2033 struct qed_ll2_info *p_ll2_conn,
2034 struct qed_ll2_stats *p_stats)
2036 struct core_ll2_ustorm_per_queue_stat ustats;
2037 u8 qid = p_ll2_conn->queue_id;
2040 memset(&ustats, 0, sizeof(ustats));
2041 ustats_addr = BAR0_MAP_REG_USDM_RAM +
2042 CORE_LL2_USTORM_PER_QUEUE_STAT_OFFSET(qid);
2043 qed_memcpy_from(p_hwfn, p_ptt, &ustats, ustats_addr, sizeof(ustats));
2045 p_stats->rcv_ucast_bytes = HILO_64_REGPAIR(ustats.rcv_ucast_bytes);
2046 p_stats->rcv_mcast_bytes = HILO_64_REGPAIR(ustats.rcv_mcast_bytes);
2047 p_stats->rcv_bcast_bytes = HILO_64_REGPAIR(ustats.rcv_bcast_bytes);
2048 p_stats->rcv_ucast_pkts = HILO_64_REGPAIR(ustats.rcv_ucast_pkts);
2049 p_stats->rcv_mcast_pkts = HILO_64_REGPAIR(ustats.rcv_mcast_pkts);
2050 p_stats->rcv_bcast_pkts = HILO_64_REGPAIR(ustats.rcv_bcast_pkts);
2053 static void _qed_ll2_get_pstats(struct qed_hwfn *p_hwfn,
2054 struct qed_ptt *p_ptt,
2055 struct qed_ll2_info *p_ll2_conn,
2056 struct qed_ll2_stats *p_stats)
2058 struct core_ll2_pstorm_per_queue_stat pstats;
2059 u8 stats_id = p_ll2_conn->tx_stats_id;
2062 memset(&pstats, 0, sizeof(pstats));
2063 pstats_addr = BAR0_MAP_REG_PSDM_RAM +
2064 CORE_LL2_PSTORM_PER_QUEUE_STAT_OFFSET(stats_id);
2065 qed_memcpy_from(p_hwfn, p_ptt, &pstats, pstats_addr, sizeof(pstats));
2067 p_stats->sent_ucast_bytes = HILO_64_REGPAIR(pstats.sent_ucast_bytes);
2068 p_stats->sent_mcast_bytes = HILO_64_REGPAIR(pstats.sent_mcast_bytes);
2069 p_stats->sent_bcast_bytes = HILO_64_REGPAIR(pstats.sent_bcast_bytes);
2070 p_stats->sent_ucast_pkts = HILO_64_REGPAIR(pstats.sent_ucast_pkts);
2071 p_stats->sent_mcast_pkts = HILO_64_REGPAIR(pstats.sent_mcast_pkts);
2072 p_stats->sent_bcast_pkts = HILO_64_REGPAIR(pstats.sent_bcast_pkts);
2075 int qed_ll2_get_stats(void *cxt,
2076 u8 connection_handle, struct qed_ll2_stats *p_stats)
2078 struct qed_hwfn *p_hwfn = cxt;
2079 struct qed_ll2_info *p_ll2_conn = NULL;
2080 struct qed_ptt *p_ptt;
2082 memset(p_stats, 0, sizeof(*p_stats));
2084 if ((connection_handle >= QED_MAX_NUM_OF_LL2_CONNECTIONS) ||
2085 !p_hwfn->p_ll2_info)
2088 p_ll2_conn = &p_hwfn->p_ll2_info[connection_handle];
2090 p_ptt = qed_ptt_acquire(p_hwfn);
2092 DP_ERR(p_hwfn, "Failed to acquire ptt\n");
2096 if (p_ll2_conn->input.gsi_enable)
2097 _qed_ll2_get_port_stats(p_hwfn, p_ptt, p_stats);
2098 _qed_ll2_get_tstats(p_hwfn, p_ptt, p_ll2_conn, p_stats);
2099 _qed_ll2_get_ustats(p_hwfn, p_ptt, p_ll2_conn, p_stats);
2100 if (p_ll2_conn->tx_stats_en)
2101 _qed_ll2_get_pstats(p_hwfn, p_ptt, p_ll2_conn, p_stats);
2103 qed_ptt_release(p_hwfn, p_ptt);
2107 static void qed_ll2b_release_rx_packet(void *cxt,
2108 u8 connection_handle,
2110 dma_addr_t rx_buf_addr,
2113 struct qed_hwfn *p_hwfn = cxt;
2115 qed_ll2_dealloc_buffer(p_hwfn->cdev, cookie);
2118 static void qed_ll2_register_cb_ops(struct qed_dev *cdev,
2119 const struct qed_ll2_cb_ops *ops,
2122 cdev->ll2->cbs = ops;
2123 cdev->ll2->cb_cookie = cookie;
2126 struct qed_ll2_cbs ll2_cbs = {
2127 .rx_comp_cb = &qed_ll2b_complete_rx_packet,
2128 .rx_release_cb = &qed_ll2b_release_rx_packet,
2129 .tx_comp_cb = &qed_ll2b_complete_tx_packet,
2130 .tx_release_cb = &qed_ll2b_complete_tx_packet,
2133 static void qed_ll2_set_conn_data(struct qed_dev *cdev,
2134 struct qed_ll2_acquire_data *data,
2135 struct qed_ll2_params *params,
2136 enum qed_ll2_conn_type conn_type,
2137 u8 *handle, bool lb)
2139 memset(data, 0, sizeof(*data));
2141 data->input.conn_type = conn_type;
2142 data->input.mtu = params->mtu;
2143 data->input.rx_num_desc = QED_LL2_RX_SIZE;
2144 data->input.rx_drop_ttl0_flg = params->drop_ttl0_packets;
2145 data->input.rx_vlan_removal_en = params->rx_vlan_stripping;
2146 data->input.tx_num_desc = QED_LL2_TX_SIZE;
2147 data->p_connection_handle = handle;
2148 data->cbs = &ll2_cbs;
2149 ll2_cbs.cookie = QED_LEADING_HWFN(cdev);
2152 data->input.tx_tc = PKT_LB_TC;
2153 data->input.tx_dest = QED_LL2_TX_DEST_LB;
2155 data->input.tx_tc = 0;
2156 data->input.tx_dest = QED_LL2_TX_DEST_NW;
2160 static int qed_ll2_start_ooo(struct qed_dev *cdev,
2161 struct qed_ll2_params *params)
2163 struct qed_hwfn *hwfn = QED_LEADING_HWFN(cdev);
2164 u8 *handle = &hwfn->pf_params.iscsi_pf_params.ll2_ooo_queue_id;
2165 struct qed_ll2_acquire_data data;
2168 qed_ll2_set_conn_data(cdev, &data, params,
2169 QED_LL2_TYPE_OOO, handle, true);
2171 rc = qed_ll2_acquire_connection(hwfn, &data);
2173 DP_INFO(cdev, "Failed to acquire LL2 OOO connection\n");
2177 rc = qed_ll2_establish_connection(hwfn, *handle);
2179 DP_INFO(cdev, "Failed to establist LL2 OOO connection\n");
2186 qed_ll2_release_connection(hwfn, *handle);
2188 *handle = QED_LL2_UNUSED_HANDLE;
2192 static int qed_ll2_start(struct qed_dev *cdev, struct qed_ll2_params *params)
2194 struct qed_ll2_buffer *buffer, *tmp_buffer;
2195 enum qed_ll2_conn_type conn_type;
2196 struct qed_ll2_acquire_data data;
2197 struct qed_ptt *p_ptt;
2201 /* Initialize LL2 locks & lists */
2202 INIT_LIST_HEAD(&cdev->ll2->list);
2203 spin_lock_init(&cdev->ll2->lock);
2204 cdev->ll2->rx_size = NET_SKB_PAD + ETH_HLEN +
2205 L1_CACHE_BYTES + params->mtu;
2207 /*Allocate memory for LL2 */
2208 DP_INFO(cdev, "Allocating LL2 buffers of size %08x bytes\n",
2209 cdev->ll2->rx_size);
2210 for (i = 0; i < QED_LL2_RX_SIZE; i++) {
2211 buffer = kzalloc(sizeof(*buffer), GFP_KERNEL);
2213 DP_INFO(cdev, "Failed to allocate LL2 buffers\n");
2217 rc = qed_ll2_alloc_buffer(cdev, (u8 **)&buffer->data,
2218 &buffer->phys_addr);
2224 list_add_tail(&buffer->list, &cdev->ll2->list);
2227 switch (QED_LEADING_HWFN(cdev)->hw_info.personality) {
2229 conn_type = QED_LL2_TYPE_FCOE;
2232 conn_type = QED_LL2_TYPE_ISCSI;
2234 case QED_PCI_ETH_ROCE:
2235 conn_type = QED_LL2_TYPE_ROCE;
2238 conn_type = QED_LL2_TYPE_TEST;
2241 qed_ll2_set_conn_data(cdev, &data, params, conn_type,
2242 &cdev->ll2->handle, false);
2244 rc = qed_ll2_acquire_connection(QED_LEADING_HWFN(cdev), &data);
2246 DP_INFO(cdev, "Failed to acquire LL2 connection\n");
2250 rc = qed_ll2_establish_connection(QED_LEADING_HWFN(cdev),
2253 DP_INFO(cdev, "Failed to establish LL2 connection\n");
2257 /* Post all Rx buffers to FW */
2258 spin_lock_bh(&cdev->ll2->lock);
2259 list_for_each_entry_safe(buffer, tmp_buffer, &cdev->ll2->list, list) {
2260 rc = qed_ll2_post_rx_buffer(QED_LEADING_HWFN(cdev),
2262 buffer->phys_addr, 0, buffer, 1);
2265 "Failed to post an Rx buffer; Deleting it\n");
2266 dma_unmap_single(&cdev->pdev->dev, buffer->phys_addr,
2267 cdev->ll2->rx_size, DMA_FROM_DEVICE);
2268 kfree(buffer->data);
2269 list_del(&buffer->list);
2272 cdev->ll2->rx_cnt++;
2275 spin_unlock_bh(&cdev->ll2->lock);
2277 if (!cdev->ll2->rx_cnt) {
2278 DP_INFO(cdev, "Failed passing even a single Rx buffer\n");
2279 goto release_terminate;
2282 if (!is_valid_ether_addr(params->ll2_mac_address)) {
2283 DP_INFO(cdev, "Invalid Ethernet address\n");
2284 goto release_terminate;
2287 if (QED_LEADING_HWFN(cdev)->hw_info.personality == QED_PCI_ISCSI) {
2288 DP_VERBOSE(cdev, QED_MSG_STORAGE, "Starting OOO LL2 queue\n");
2289 rc = qed_ll2_start_ooo(cdev, params);
2292 "Failed to initialize the OOO LL2 queue\n");
2293 goto release_terminate;
2297 p_ptt = qed_ptt_acquire(QED_LEADING_HWFN(cdev));
2299 DP_INFO(cdev, "Failed to acquire PTT\n");
2300 goto release_terminate;
2303 rc = qed_llh_add_mac_filter(QED_LEADING_HWFN(cdev), p_ptt,
2304 params->ll2_mac_address);
2305 qed_ptt_release(QED_LEADING_HWFN(cdev), p_ptt);
2307 DP_ERR(cdev, "Failed to allocate LLH filter\n");
2308 goto release_terminate_all;
2311 ether_addr_copy(cdev->ll2_mac_address, params->ll2_mac_address);
2314 release_terminate_all:
2317 qed_ll2_terminate_connection(QED_LEADING_HWFN(cdev), cdev->ll2->handle);
2319 qed_ll2_release_connection(QED_LEADING_HWFN(cdev), cdev->ll2->handle);
2321 qed_ll2_kill_buffers(cdev);
2322 cdev->ll2->handle = QED_LL2_UNUSED_HANDLE;
2326 static int qed_ll2_stop(struct qed_dev *cdev)
2328 struct qed_ptt *p_ptt;
2331 if (cdev->ll2->handle == QED_LL2_UNUSED_HANDLE)
2334 p_ptt = qed_ptt_acquire(QED_LEADING_HWFN(cdev));
2336 DP_INFO(cdev, "Failed to acquire PTT\n");
2340 qed_llh_remove_mac_filter(QED_LEADING_HWFN(cdev), p_ptt,
2341 cdev->ll2_mac_address);
2342 qed_ptt_release(QED_LEADING_HWFN(cdev), p_ptt);
2343 eth_zero_addr(cdev->ll2_mac_address);
2345 if (QED_LEADING_HWFN(cdev)->hw_info.personality == QED_PCI_ISCSI)
2346 qed_ll2_stop_ooo(cdev);
2348 rc = qed_ll2_terminate_connection(QED_LEADING_HWFN(cdev),
2351 DP_INFO(cdev, "Failed to terminate LL2 connection\n");
2353 qed_ll2_kill_buffers(cdev);
2355 qed_ll2_release_connection(QED_LEADING_HWFN(cdev), cdev->ll2->handle);
2356 cdev->ll2->handle = QED_LL2_UNUSED_HANDLE;
2363 static int qed_ll2_start_xmit(struct qed_dev *cdev, struct sk_buff *skb)
2365 struct qed_ll2_tx_pkt_info pkt;
2366 const skb_frag_t *frag;
2367 int rc = -EINVAL, i;
2372 if (unlikely(skb->ip_summed != CHECKSUM_NONE)) {
2373 DP_INFO(cdev, "Cannot transmit a checksummed packet\n");
2377 if (1 + skb_shinfo(skb)->nr_frags > CORE_LL2_TX_MAX_BDS_PER_PACKET) {
2378 DP_ERR(cdev, "Cannot transmit a packet with %d fragments\n",
2379 1 + skb_shinfo(skb)->nr_frags);
2383 mapping = dma_map_single(&cdev->pdev->dev, skb->data,
2384 skb->len, DMA_TO_DEVICE);
2385 if (unlikely(dma_mapping_error(&cdev->pdev->dev, mapping))) {
2386 DP_NOTICE(cdev, "SKB mapping failed\n");
2390 /* Request HW to calculate IP csum */
2391 if (!((vlan_get_protocol(skb) == htons(ETH_P_IPV6)) &&
2392 ipv6_hdr(skb)->nexthdr == NEXTHDR_IPV6))
2393 flags |= BIT(CORE_TX_BD_DATA_IP_CSUM_SHIFT);
2395 if (skb_vlan_tag_present(skb)) {
2396 vlan = skb_vlan_tag_get(skb);
2397 flags |= BIT(CORE_TX_BD_DATA_VLAN_INSERTION_SHIFT);
2400 memset(&pkt, 0, sizeof(pkt));
2401 pkt.num_of_bds = 1 + skb_shinfo(skb)->nr_frags;
2403 pkt.bd_flags = flags;
2404 pkt.tx_dest = QED_LL2_TX_DEST_NW;
2405 pkt.first_frag = mapping;
2406 pkt.first_frag_len = skb->len;
2409 rc = qed_ll2_prepare_tx_packet(&cdev->hwfns[0], cdev->ll2->handle,
2414 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
2415 frag = &skb_shinfo(skb)->frags[i];
2417 mapping = skb_frag_dma_map(&cdev->pdev->dev, frag, 0,
2418 skb_frag_size(frag), DMA_TO_DEVICE);
2420 if (unlikely(dma_mapping_error(&cdev->pdev->dev, mapping))) {
2422 "Unable to map frag - dropping packet\n");
2426 rc = qed_ll2_set_fragment_of_tx_packet(QED_LEADING_HWFN(cdev),
2429 skb_frag_size(frag));
2431 /* if failed not much to do here, partial packet has been posted
2432 * we can't free memory, will need to wait for completion.
2441 dma_unmap_single(&cdev->pdev->dev, mapping, skb->len, DMA_TO_DEVICE);
2447 static int qed_ll2_stats(struct qed_dev *cdev, struct qed_ll2_stats *stats)
2452 return qed_ll2_get_stats(QED_LEADING_HWFN(cdev),
2453 cdev->ll2->handle, stats);
2456 const struct qed_ll2_ops qed_ll2_ops_pass = {
2457 .start = &qed_ll2_start,
2458 .stop = &qed_ll2_stop,
2459 .start_xmit = &qed_ll2_start_xmit,
2460 .register_cb_ops = &qed_ll2_register_cb_ops,
2461 .get_stats = &qed_ll2_stats,
2464 int qed_ll2_alloc_if(struct qed_dev *cdev)
2466 cdev->ll2 = kzalloc(sizeof(*cdev->ll2), GFP_KERNEL);
2467 return cdev->ll2 ? 0 : -ENOMEM;
2470 void qed_ll2_dealloc_if(struct qed_dev *cdev)