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7#include <linux/types.h>
8#include <asm/byteorder.h>
9#include <linux/dma-mapping.h>
10#include <linux/if_vlan.h>
11#include <linux/kernel.h>
12#include <linux/pci.h>
13#include <linux/slab.h>
14#include <linux/stddef.h>
15#include <linux/workqueue.h>
16#include <net/ipv6.h>
17#include <linux/bitops.h>
18#include <linux/delay.h>
19#include <linux/errno.h>
20#include <linux/etherdevice.h>
21#include <linux/io.h>
22#include <linux/list.h>
23#include <linux/mutex.h>
24#include <linux/spinlock.h>
25#include <linux/string.h>
26#include <linux/qed/qed_ll2_if.h>
27#include "qed.h"
28#include "qed_cxt.h"
29#include "qed_dev_api.h"
30#include "qed_hsi.h"
31#include "qed_hw.h"
32#include "qed_int.h"
33#include "qed_ll2.h"
34#include "qed_mcp.h"
35#include "qed_ooo.h"
36#include "qed_reg_addr.h"
37#include "qed_sp.h"
38#include "qed_rdma.h"
39
40#define QED_LL2_RX_REGISTERED(ll2) ((ll2)->rx_queue.b_cb_registered)
41#define QED_LL2_TX_REGISTERED(ll2) ((ll2)->tx_queue.b_cb_registered)
42
43#define QED_LL2_TX_SIZE (256)
44#define QED_LL2_RX_SIZE (4096)
45
46struct qed_cb_ll2_info {
47 int rx_cnt;
48 u32 rx_size;
49 u8 handle;
50
51
52 spinlock_t lock;
53 struct list_head list;
54
55 const struct qed_ll2_cb_ops *cbs;
56 void *cb_cookie;
57};
58
59struct qed_ll2_buffer {
60 struct list_head list;
61 void *data;
62 dma_addr_t phys_addr;
63};
64
65static void qed_ll2b_complete_tx_packet(void *cxt,
66 u8 connection_handle,
67 void *cookie,
68 dma_addr_t first_frag_addr,
69 bool b_last_fragment,
70 bool b_last_packet)
71{
72 struct qed_hwfn *p_hwfn = cxt;
73 struct qed_dev *cdev = p_hwfn->cdev;
74 struct sk_buff *skb = cookie;
75
76
77 dma_unmap_single(&p_hwfn->cdev->pdev->dev, first_frag_addr,
78 skb_headlen(skb), DMA_TO_DEVICE);
79
80 if (cdev->ll2->cbs && cdev->ll2->cbs->tx_cb)
81 cdev->ll2->cbs->tx_cb(cdev->ll2->cb_cookie, skb,
82 b_last_fragment);
83
84 dev_kfree_skb_any(skb);
85}
86
87static int qed_ll2_alloc_buffer(struct qed_dev *cdev,
88 u8 **data, dma_addr_t *phys_addr)
89{
90 *data = kmalloc(cdev->ll2->rx_size, GFP_ATOMIC);
91 if (!(*data)) {
92 DP_INFO(cdev, "Failed to allocate LL2 buffer data\n");
93 return -ENOMEM;
94 }
95
96 *phys_addr = dma_map_single(&cdev->pdev->dev,
97 ((*data) + NET_SKB_PAD),
98 cdev->ll2->rx_size, DMA_FROM_DEVICE);
99 if (dma_mapping_error(&cdev->pdev->dev, *phys_addr)) {
100 DP_INFO(cdev, "Failed to map LL2 buffer data\n");
101 kfree((*data));
102 return -ENOMEM;
103 }
104
105 return 0;
106}
107
108static int qed_ll2_dealloc_buffer(struct qed_dev *cdev,
109 struct qed_ll2_buffer *buffer)
110{
111 spin_lock_bh(&cdev->ll2->lock);
112
113 dma_unmap_single(&cdev->pdev->dev, buffer->phys_addr,
114 cdev->ll2->rx_size, DMA_FROM_DEVICE);
115 kfree(buffer->data);
116 list_del(&buffer->list);
117
118 cdev->ll2->rx_cnt--;
119 if (!cdev->ll2->rx_cnt)
120 DP_INFO(cdev, "All LL2 entries were removed\n");
121
122 spin_unlock_bh(&cdev->ll2->lock);
123
124 return 0;
125}
126
127static void qed_ll2_kill_buffers(struct qed_dev *cdev)
128{
129 struct qed_ll2_buffer *buffer, *tmp_buffer;
130
131 list_for_each_entry_safe(buffer, tmp_buffer, &cdev->ll2->list, list)
132 qed_ll2_dealloc_buffer(cdev, buffer);
133}
134
135static void qed_ll2b_complete_rx_packet(void *cxt,
136 struct qed_ll2_comp_rx_data *data)
137{
138 struct qed_hwfn *p_hwfn = cxt;
139 struct qed_ll2_buffer *buffer = data->cookie;
140 struct qed_dev *cdev = p_hwfn->cdev;
141 dma_addr_t new_phys_addr;
142 struct sk_buff *skb;
143 bool reuse = false;
144 int rc = -EINVAL;
145 u8 *new_data;
146
147 DP_VERBOSE(p_hwfn,
148 (NETIF_MSG_RX_STATUS | QED_MSG_STORAGE | NETIF_MSG_PKTDATA),
149 "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",
150 (u64)data->rx_buf_addr,
151 data->u.placement_offset,
152 data->length.packet_length,
153 data->parse_flags,
154 data->vlan, data->opaque_data_0, data->opaque_data_1);
155
156 if ((cdev->dp_module & NETIF_MSG_PKTDATA) && buffer->data) {
157 print_hex_dump(KERN_INFO, "",
158 DUMP_PREFIX_OFFSET, 16, 1,
159 buffer->data, data->length.packet_length, false);
160 }
161
162
163 if (data->length.packet_length < ETH_HLEN)
164 reuse = true;
165
166
167 if (!reuse)
168 rc = qed_ll2_alloc_buffer(p_hwfn->cdev, &new_data,
169 &new_phys_addr);
170
171
172 if (rc)
173 goto out_post;
174 dma_unmap_single(&cdev->pdev->dev, buffer->phys_addr,
175 cdev->ll2->rx_size, DMA_FROM_DEVICE);
176
177 skb = build_skb(buffer->data, 0);
178 if (!skb) {
179 DP_INFO(cdev, "Failed to build SKB\n");
180 kfree(buffer->data);
181 goto out_post1;
182 }
183
184 data->u.placement_offset += NET_SKB_PAD;
185 skb_reserve(skb, data->u.placement_offset);
186 skb_put(skb, data->length.packet_length);
187 skb_checksum_none_assert(skb);
188
189
190
191
192 skb_reset_mac_header(skb);
193 skb->protocol = eth_hdr(skb)->h_proto;
194
195
196 if (cdev->ll2->cbs && cdev->ll2->cbs->rx_cb) {
197 if (data->vlan)
198 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q),
199 data->vlan);
200 cdev->ll2->cbs->rx_cb(cdev->ll2->cb_cookie, skb,
201 data->opaque_data_0,
202 data->opaque_data_1);
203 } else {
204 DP_VERBOSE(p_hwfn, (NETIF_MSG_RX_STATUS | NETIF_MSG_PKTDATA |
205 QED_MSG_LL2 | QED_MSG_STORAGE),
206 "Dropping the packet\n");
207 kfree(buffer->data);
208 }
209
210out_post1:
211
212 buffer->data = new_data;
213 buffer->phys_addr = new_phys_addr;
214
215out_post:
216 rc = qed_ll2_post_rx_buffer(p_hwfn, cdev->ll2->handle,
217 buffer->phys_addr, 0, buffer, 1);
218 if (rc)
219 qed_ll2_dealloc_buffer(cdev, buffer);
220}
221
222static struct qed_ll2_info *__qed_ll2_handle_sanity(struct qed_hwfn *p_hwfn,
223 u8 connection_handle,
224 bool b_lock,
225 bool b_only_active)
226{
227 struct qed_ll2_info *p_ll2_conn, *p_ret = NULL;
228
229 if (connection_handle >= QED_MAX_NUM_OF_LL2_CONNECTIONS)
230 return NULL;
231
232 if (!p_hwfn->p_ll2_info)
233 return NULL;
234
235 p_ll2_conn = &p_hwfn->p_ll2_info[connection_handle];
236
237 if (b_only_active) {
238 if (b_lock)
239 mutex_lock(&p_ll2_conn->mutex);
240 if (p_ll2_conn->b_active)
241 p_ret = p_ll2_conn;
242 if (b_lock)
243 mutex_unlock(&p_ll2_conn->mutex);
244 } else {
245 p_ret = p_ll2_conn;
246 }
247
248 return p_ret;
249}
250
251static struct qed_ll2_info *qed_ll2_handle_sanity(struct qed_hwfn *p_hwfn,
252 u8 connection_handle)
253{
254 return __qed_ll2_handle_sanity(p_hwfn, connection_handle, false, true);
255}
256
257static struct qed_ll2_info *qed_ll2_handle_sanity_lock(struct qed_hwfn *p_hwfn,
258 u8 connection_handle)
259{
260 return __qed_ll2_handle_sanity(p_hwfn, connection_handle, true, true);
261}
262
263static struct qed_ll2_info *qed_ll2_handle_sanity_inactive(struct qed_hwfn
264 *p_hwfn,
265 u8 connection_handle)
266{
267 return __qed_ll2_handle_sanity(p_hwfn, connection_handle, false, false);
268}
269
270static void qed_ll2_txq_flush(struct qed_hwfn *p_hwfn, u8 connection_handle)
271{
272 bool b_last_packet = false, b_last_frag = false;
273 struct qed_ll2_tx_packet *p_pkt = NULL;
274 struct qed_ll2_info *p_ll2_conn;
275 struct qed_ll2_tx_queue *p_tx;
276 unsigned long flags = 0;
277 dma_addr_t tx_frag;
278
279 p_ll2_conn = qed_ll2_handle_sanity_inactive(p_hwfn, connection_handle);
280 if (!p_ll2_conn)
281 return;
282
283 p_tx = &p_ll2_conn->tx_queue;
284
285 spin_lock_irqsave(&p_tx->lock, flags);
286 while (!list_empty(&p_tx->active_descq)) {
287 p_pkt = list_first_entry(&p_tx->active_descq,
288 struct qed_ll2_tx_packet, list_entry);
289 if (!p_pkt)
290 break;
291
292 list_del(&p_pkt->list_entry);
293 b_last_packet = list_empty(&p_tx->active_descq);
294 list_add_tail(&p_pkt->list_entry, &p_tx->free_descq);
295 spin_unlock_irqrestore(&p_tx->lock, flags);
296 if (p_ll2_conn->input.conn_type == QED_LL2_TYPE_OOO) {
297 struct qed_ooo_buffer *p_buffer;
298
299 p_buffer = (struct qed_ooo_buffer *)p_pkt->cookie;
300 qed_ooo_put_free_buffer(p_hwfn, p_hwfn->p_ooo_info,
301 p_buffer);
302 } else {
303 p_tx->cur_completing_packet = *p_pkt;
304 p_tx->cur_completing_bd_idx = 1;
305 b_last_frag =
306 p_tx->cur_completing_bd_idx == p_pkt->bd_used;
307 tx_frag = p_pkt->bds_set[0].tx_frag;
308 p_ll2_conn->cbs.tx_release_cb(p_ll2_conn->cbs.cookie,
309 p_ll2_conn->my_id,
310 p_pkt->cookie,
311 tx_frag,
312 b_last_frag,
313 b_last_packet);
314 }
315 spin_lock_irqsave(&p_tx->lock, flags);
316 }
317 spin_unlock_irqrestore(&p_tx->lock, flags);
318}
319
320static int qed_ll2_txq_completion(struct qed_hwfn *p_hwfn, void *p_cookie)
321{
322 struct qed_ll2_info *p_ll2_conn = p_cookie;
323 struct qed_ll2_tx_queue *p_tx = &p_ll2_conn->tx_queue;
324 u16 new_idx = 0, num_bds = 0, num_bds_in_packet = 0;
325 struct qed_ll2_tx_packet *p_pkt;
326 bool b_last_frag = false;
327 unsigned long flags;
328 int rc = -EINVAL;
329
330 if (!p_ll2_conn)
331 return rc;
332
333 spin_lock_irqsave(&p_tx->lock, flags);
334 if (p_tx->b_completing_packet) {
335 rc = -EBUSY;
336 goto out;
337 }
338
339 new_idx = le16_to_cpu(*p_tx->p_fw_cons);
340 num_bds = ((s16)new_idx - (s16)p_tx->bds_idx);
341 while (num_bds) {
342 if (list_empty(&p_tx->active_descq))
343 goto out;
344
345 p_pkt = list_first_entry(&p_tx->active_descq,
346 struct qed_ll2_tx_packet, list_entry);
347 if (!p_pkt)
348 goto out;
349
350 p_tx->b_completing_packet = true;
351 p_tx->cur_completing_packet = *p_pkt;
352 num_bds_in_packet = p_pkt->bd_used;
353 list_del(&p_pkt->list_entry);
354
355 if (num_bds < num_bds_in_packet) {
356 DP_NOTICE(p_hwfn,
357 "Rest of BDs does not cover whole packet\n");
358 goto out;
359 }
360
361 num_bds -= num_bds_in_packet;
362 p_tx->bds_idx += num_bds_in_packet;
363 while (num_bds_in_packet--)
364 qed_chain_consume(&p_tx->txq_chain);
365
366 p_tx->cur_completing_bd_idx = 1;
367 b_last_frag = p_tx->cur_completing_bd_idx == p_pkt->bd_used;
368 list_add_tail(&p_pkt->list_entry, &p_tx->free_descq);
369
370 spin_unlock_irqrestore(&p_tx->lock, flags);
371
372 p_ll2_conn->cbs.tx_comp_cb(p_ll2_conn->cbs.cookie,
373 p_ll2_conn->my_id,
374 p_pkt->cookie,
375 p_pkt->bds_set[0].tx_frag,
376 b_last_frag, !num_bds);
377
378 spin_lock_irqsave(&p_tx->lock, flags);
379 }
380
381 p_tx->b_completing_packet = false;
382 rc = 0;
383out:
384 spin_unlock_irqrestore(&p_tx->lock, flags);
385 return rc;
386}
387
388static void qed_ll2_rxq_parse_gsi(struct qed_hwfn *p_hwfn,
389 union core_rx_cqe_union *p_cqe,
390 struct qed_ll2_comp_rx_data *data)
391{
392 data->parse_flags = le16_to_cpu(p_cqe->rx_cqe_gsi.parse_flags.flags);
393 data->length.data_length = le16_to_cpu(p_cqe->rx_cqe_gsi.data_length);
394 data->vlan = le16_to_cpu(p_cqe->rx_cqe_gsi.vlan);
395 data->opaque_data_0 = le32_to_cpu(p_cqe->rx_cqe_gsi.src_mac_addrhi);
396 data->opaque_data_1 = le16_to_cpu(p_cqe->rx_cqe_gsi.src_mac_addrlo);
397 data->u.data_length_error = p_cqe->rx_cqe_gsi.data_length_error;
398 data->qp_id = le16_to_cpu(p_cqe->rx_cqe_gsi.qp_id);
399
400 data->src_qp = le32_to_cpu(p_cqe->rx_cqe_gsi.src_qp);
401}
402
403static void qed_ll2_rxq_parse_reg(struct qed_hwfn *p_hwfn,
404 union core_rx_cqe_union *p_cqe,
405 struct qed_ll2_comp_rx_data *data)
406{
407 data->parse_flags = le16_to_cpu(p_cqe->rx_cqe_fp.parse_flags.flags);
408 data->err_flags = le16_to_cpu(p_cqe->rx_cqe_fp.err_flags.flags);
409 data->length.packet_length =
410 le16_to_cpu(p_cqe->rx_cqe_fp.packet_length);
411 data->vlan = le16_to_cpu(p_cqe->rx_cqe_fp.vlan);
412 data->opaque_data_0 = le32_to_cpu(p_cqe->rx_cqe_fp.opaque_data.data[0]);
413 data->opaque_data_1 = le32_to_cpu(p_cqe->rx_cqe_fp.opaque_data.data[1]);
414 data->u.placement_offset = p_cqe->rx_cqe_fp.placement_offset;
415}
416
417static int
418qed_ll2_handle_slowpath(struct qed_hwfn *p_hwfn,
419 struct qed_ll2_info *p_ll2_conn,
420 union core_rx_cqe_union *p_cqe,
421 unsigned long *p_lock_flags)
422{
423 struct qed_ll2_rx_queue *p_rx = &p_ll2_conn->rx_queue;
424 struct core_rx_slow_path_cqe *sp_cqe;
425
426 sp_cqe = &p_cqe->rx_cqe_sp;
427 if (sp_cqe->ramrod_cmd_id != CORE_RAMROD_RX_QUEUE_FLUSH) {
428 DP_NOTICE(p_hwfn,
429 "LL2 - unexpected Rx CQE slowpath ramrod_cmd_id:%d\n",
430 sp_cqe->ramrod_cmd_id);
431 return -EINVAL;
432 }
433
434 if (!p_ll2_conn->cbs.slowpath_cb) {
435 DP_NOTICE(p_hwfn,
436 "LL2 - received RX_QUEUE_FLUSH but no callback was provided\n");
437 return -EINVAL;
438 }
439
440 spin_unlock_irqrestore(&p_rx->lock, *p_lock_flags);
441
442 p_ll2_conn->cbs.slowpath_cb(p_ll2_conn->cbs.cookie,
443 p_ll2_conn->my_id,
444 le32_to_cpu(sp_cqe->opaque_data.data[0]),
445 le32_to_cpu(sp_cqe->opaque_data.data[1]));
446
447 spin_lock_irqsave(&p_rx->lock, *p_lock_flags);
448
449 return 0;
450}
451
452static int
453qed_ll2_rxq_handle_completion(struct qed_hwfn *p_hwfn,
454 struct qed_ll2_info *p_ll2_conn,
455 union core_rx_cqe_union *p_cqe,
456 unsigned long *p_lock_flags, bool b_last_cqe)
457{
458 struct qed_ll2_rx_queue *p_rx = &p_ll2_conn->rx_queue;
459 struct qed_ll2_rx_packet *p_pkt = NULL;
460 struct qed_ll2_comp_rx_data data;
461
462 if (!list_empty(&p_rx->active_descq))
463 p_pkt = list_first_entry(&p_rx->active_descq,
464 struct qed_ll2_rx_packet, list_entry);
465 if (!p_pkt) {
466 DP_NOTICE(p_hwfn,
467 "[%d] LL2 Rx completion but active_descq is empty\n",
468 p_ll2_conn->input.conn_type);
469
470 return -EIO;
471 }
472 list_del(&p_pkt->list_entry);
473
474 if (p_cqe->rx_cqe_sp.type == CORE_RX_CQE_TYPE_REGULAR)
475 qed_ll2_rxq_parse_reg(p_hwfn, p_cqe, &data);
476 else
477 qed_ll2_rxq_parse_gsi(p_hwfn, p_cqe, &data);
478 if (qed_chain_consume(&p_rx->rxq_chain) != p_pkt->rxq_bd)
479 DP_NOTICE(p_hwfn,
480 "Mismatch between active_descq and the LL2 Rx chain\n");
481
482 list_add_tail(&p_pkt->list_entry, &p_rx->free_descq);
483
484 data.connection_handle = p_ll2_conn->my_id;
485 data.cookie = p_pkt->cookie;
486 data.rx_buf_addr = p_pkt->rx_buf_addr;
487 data.b_last_packet = b_last_cqe;
488
489 spin_unlock_irqrestore(&p_rx->lock, *p_lock_flags);
490 p_ll2_conn->cbs.rx_comp_cb(p_ll2_conn->cbs.cookie, &data);
491
492 spin_lock_irqsave(&p_rx->lock, *p_lock_flags);
493
494 return 0;
495}
496
497static int qed_ll2_rxq_completion(struct qed_hwfn *p_hwfn, void *cookie)
498{
499 struct qed_ll2_info *p_ll2_conn = (struct qed_ll2_info *)cookie;
500 struct qed_ll2_rx_queue *p_rx = &p_ll2_conn->rx_queue;
501 union core_rx_cqe_union *cqe = NULL;
502 u16 cq_new_idx = 0, cq_old_idx = 0;
503 unsigned long flags = 0;
504 int rc = 0;
505
506 if (!p_ll2_conn)
507 return rc;
508
509 spin_lock_irqsave(&p_rx->lock, flags);
510
511 if (!QED_LL2_RX_REGISTERED(p_ll2_conn)) {
512 spin_unlock_irqrestore(&p_rx->lock, flags);
513 return 0;
514 }
515
516 cq_new_idx = le16_to_cpu(*p_rx->p_fw_cons);
517 cq_old_idx = qed_chain_get_cons_idx(&p_rx->rcq_chain);
518
519 while (cq_new_idx != cq_old_idx) {
520 bool b_last_cqe = (cq_new_idx == cq_old_idx);
521
522 cqe =
523 (union core_rx_cqe_union *)
524 qed_chain_consume(&p_rx->rcq_chain);
525 cq_old_idx = qed_chain_get_cons_idx(&p_rx->rcq_chain);
526
527 DP_VERBOSE(p_hwfn,
528 QED_MSG_LL2,
529 "LL2 [sw. cons %04x, fw. at %04x] - Got Packet of type %02x\n",
530 cq_old_idx, cq_new_idx, cqe->rx_cqe_sp.type);
531
532 switch (cqe->rx_cqe_sp.type) {
533 case CORE_RX_CQE_TYPE_SLOW_PATH:
534 rc = qed_ll2_handle_slowpath(p_hwfn, p_ll2_conn,
535 cqe, &flags);
536 break;
537 case CORE_RX_CQE_TYPE_GSI_OFFLOAD:
538 case CORE_RX_CQE_TYPE_REGULAR:
539 rc = qed_ll2_rxq_handle_completion(p_hwfn, p_ll2_conn,
540 cqe, &flags,
541 b_last_cqe);
542 break;
543 default:
544 rc = -EIO;
545 }
546 }
547
548 spin_unlock_irqrestore(&p_rx->lock, flags);
549 return rc;
550}
551
552static void qed_ll2_rxq_flush(struct qed_hwfn *p_hwfn, u8 connection_handle)
553{
554 struct qed_ll2_info *p_ll2_conn = NULL;
555 struct qed_ll2_rx_packet *p_pkt = NULL;
556 struct qed_ll2_rx_queue *p_rx;
557 unsigned long flags = 0;
558
559 p_ll2_conn = qed_ll2_handle_sanity_inactive(p_hwfn, connection_handle);
560 if (!p_ll2_conn)
561 return;
562
563 p_rx = &p_ll2_conn->rx_queue;
564
565 spin_lock_irqsave(&p_rx->lock, flags);
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);
569 if (!p_pkt)
570 break;
571 list_move_tail(&p_pkt->list_entry, &p_rx->free_descq);
572 spin_unlock_irqrestore(&p_rx->lock, flags);
573
574 if (p_ll2_conn->input.conn_type == QED_LL2_TYPE_OOO) {
575 struct qed_ooo_buffer *p_buffer;
576
577 p_buffer = (struct qed_ooo_buffer *)p_pkt->cookie;
578 qed_ooo_put_free_buffer(p_hwfn, p_hwfn->p_ooo_info,
579 p_buffer);
580 } else {
581 dma_addr_t rx_buf_addr = p_pkt->rx_buf_addr;
582 void *cookie = p_pkt->cookie;
583 bool b_last;
584
585 b_last = list_empty(&p_rx->active_descq);
586 p_ll2_conn->cbs.rx_release_cb(p_ll2_conn->cbs.cookie,
587 p_ll2_conn->my_id,
588 cookie,
589 rx_buf_addr, b_last);
590 }
591 spin_lock_irqsave(&p_rx->lock, flags);
592 }
593 spin_unlock_irqrestore(&p_rx->lock, flags);
594}
595
596static bool
597qed_ll2_lb_rxq_handler_slowpath(struct qed_hwfn *p_hwfn,
598 struct core_rx_slow_path_cqe *p_cqe)
599{
600 struct ooo_opaque *iscsi_ooo;
601 u32 cid;
602
603 if (p_cqe->ramrod_cmd_id != CORE_RAMROD_RX_QUEUE_FLUSH)
604 return false;
605
606 iscsi_ooo = (struct ooo_opaque *)&p_cqe->opaque_data;
607 if (iscsi_ooo->ooo_opcode != TCP_EVENT_DELETE_ISLES)
608 return false;
609
610
611 cid = le32_to_cpu(iscsi_ooo->cid);
612 qed_ooo_release_connection_isles(p_hwfn, p_hwfn->p_ooo_info, cid);
613
614 return true;
615}
616
617static int qed_ll2_lb_rxq_handler(struct qed_hwfn *p_hwfn,
618 struct qed_ll2_info *p_ll2_conn)
619{
620 struct qed_ll2_rx_queue *p_rx = &p_ll2_conn->rx_queue;
621 u16 packet_length = 0, parse_flags = 0, vlan = 0;
622 struct qed_ll2_rx_packet *p_pkt = NULL;
623 u32 num_ooo_add_to_peninsula = 0, cid;
624 union core_rx_cqe_union *cqe = NULL;
625 u16 cq_new_idx = 0, cq_old_idx = 0;
626 struct qed_ooo_buffer *p_buffer;
627 struct ooo_opaque *iscsi_ooo;
628 u8 placement_offset = 0;
629 u8 cqe_type;
630
631 cq_new_idx = le16_to_cpu(*p_rx->p_fw_cons);
632 cq_old_idx = qed_chain_get_cons_idx(&p_rx->rcq_chain);
633 if (cq_new_idx == cq_old_idx)
634 return 0;
635
636 while (cq_new_idx != cq_old_idx) {
637 struct core_rx_fast_path_cqe *p_cqe_fp;
638
639 cqe = qed_chain_consume(&p_rx->rcq_chain);
640 cq_old_idx = qed_chain_get_cons_idx(&p_rx->rcq_chain);
641 cqe_type = cqe->rx_cqe_sp.type;
642
643 if (cqe_type == CORE_RX_CQE_TYPE_SLOW_PATH)
644 if (qed_ll2_lb_rxq_handler_slowpath(p_hwfn,
645 &cqe->rx_cqe_sp))
646 continue;
647
648 if (cqe_type != CORE_RX_CQE_TYPE_REGULAR) {
649 DP_NOTICE(p_hwfn,
650 "Got a non-regular LB LL2 completion [type 0x%02x]\n",
651 cqe_type);
652 return -EINVAL;
653 }
654 p_cqe_fp = &cqe->rx_cqe_fp;
655
656 placement_offset = p_cqe_fp->placement_offset;
657 parse_flags = le16_to_cpu(p_cqe_fp->parse_flags.flags);
658 packet_length = le16_to_cpu(p_cqe_fp->packet_length);
659 vlan = le16_to_cpu(p_cqe_fp->vlan);
660 iscsi_ooo = (struct ooo_opaque *)&p_cqe_fp->opaque_data;
661 qed_ooo_save_history_entry(p_hwfn, p_hwfn->p_ooo_info,
662 iscsi_ooo);
663 cid = le32_to_cpu(iscsi_ooo->cid);
664
665
666 if (iscsi_ooo->drop_size)
667 qed_ooo_delete_isles(p_hwfn, p_hwfn->p_ooo_info, cid,
668 iscsi_ooo->drop_isle,
669 iscsi_ooo->drop_size);
670
671 if (iscsi_ooo->ooo_opcode == TCP_EVENT_NOP)
672 continue;
673
674
675 if (list_empty(&p_rx->active_descq)) {
676 DP_NOTICE(p_hwfn,
677 "LL2 OOO RX chain has no submitted buffers\n"
678 );
679 return -EIO;
680 }
681
682 p_pkt = list_first_entry(&p_rx->active_descq,
683 struct qed_ll2_rx_packet, list_entry);
684
685 if ((iscsi_ooo->ooo_opcode == TCP_EVENT_ADD_NEW_ISLE) ||
686 (iscsi_ooo->ooo_opcode == TCP_EVENT_ADD_ISLE_RIGHT) ||
687 (iscsi_ooo->ooo_opcode == TCP_EVENT_ADD_ISLE_LEFT) ||
688 (iscsi_ooo->ooo_opcode == TCP_EVENT_ADD_PEN) ||
689 (iscsi_ooo->ooo_opcode == TCP_EVENT_JOIN)) {
690 if (!p_pkt) {
691 DP_NOTICE(p_hwfn,
692 "LL2 OOO RX packet is not valid\n");
693 return -EIO;
694 }
695 list_del(&p_pkt->list_entry);
696 p_buffer = (struct qed_ooo_buffer *)p_pkt->cookie;
697 p_buffer->packet_length = packet_length;
698 p_buffer->parse_flags = parse_flags;
699 p_buffer->vlan = vlan;
700 p_buffer->placement_offset = placement_offset;
701 qed_chain_consume(&p_rx->rxq_chain);
702 list_add_tail(&p_pkt->list_entry, &p_rx->free_descq);
703
704 switch (iscsi_ooo->ooo_opcode) {
705 case TCP_EVENT_ADD_NEW_ISLE:
706 qed_ooo_add_new_isle(p_hwfn,
707 p_hwfn->p_ooo_info,
708 cid,
709 iscsi_ooo->ooo_isle,
710 p_buffer);
711 break;
712 case TCP_EVENT_ADD_ISLE_RIGHT:
713 qed_ooo_add_new_buffer(p_hwfn,
714 p_hwfn->p_ooo_info,
715 cid,
716 iscsi_ooo->ooo_isle,
717 p_buffer,
718 QED_OOO_RIGHT_BUF);
719 break;
720 case TCP_EVENT_ADD_ISLE_LEFT:
721 qed_ooo_add_new_buffer(p_hwfn,
722 p_hwfn->p_ooo_info,
723 cid,
724 iscsi_ooo->ooo_isle,
725 p_buffer,
726 QED_OOO_LEFT_BUF);
727 break;
728 case TCP_EVENT_JOIN:
729 qed_ooo_add_new_buffer(p_hwfn,
730 p_hwfn->p_ooo_info,
731 cid,
732 iscsi_ooo->ooo_isle +
733 1,
734 p_buffer,
735 QED_OOO_LEFT_BUF);
736 qed_ooo_join_isles(p_hwfn,
737 p_hwfn->p_ooo_info,
738 cid, iscsi_ooo->ooo_isle);
739 break;
740 case TCP_EVENT_ADD_PEN:
741 num_ooo_add_to_peninsula++;
742 qed_ooo_put_ready_buffer(p_hwfn,
743 p_hwfn->p_ooo_info,
744 p_buffer, true);
745 break;
746 }
747 } else {
748 DP_NOTICE(p_hwfn,
749 "Unexpected event (%d) TX OOO completion\n",
750 iscsi_ooo->ooo_opcode);
751 }
752 }
753
754 return 0;
755}
756
757static void
758qed_ooo_submit_tx_buffers(struct qed_hwfn *p_hwfn,
759 struct qed_ll2_info *p_ll2_conn)
760{
761 struct qed_ll2_tx_pkt_info tx_pkt;
762 struct qed_ooo_buffer *p_buffer;
763 u16 l4_hdr_offset_w;
764 dma_addr_t first_frag;
765 u8 bd_flags;
766 int rc;
767
768
769 while ((p_buffer = qed_ooo_get_ready_buffer(p_hwfn,
770 p_hwfn->p_ooo_info))) {
771 l4_hdr_offset_w = 0;
772 bd_flags = 0;
773
774 first_frag = p_buffer->rx_buffer_phys_addr +
775 p_buffer->placement_offset;
776 SET_FIELD(bd_flags, CORE_TX_BD_DATA_FORCE_VLAN_MODE, 1);
777 SET_FIELD(bd_flags, CORE_TX_BD_DATA_L4_PROTOCOL, 1);
778
779 memset(&tx_pkt, 0, sizeof(tx_pkt));
780 tx_pkt.num_of_bds = 1;
781 tx_pkt.vlan = p_buffer->vlan;
782 tx_pkt.bd_flags = bd_flags;
783 tx_pkt.l4_hdr_offset_w = l4_hdr_offset_w;
784 switch (p_ll2_conn->tx_dest) {
785 case CORE_TX_DEST_NW:
786 tx_pkt.tx_dest = QED_LL2_TX_DEST_NW;
787 break;
788 case CORE_TX_DEST_LB:
789 tx_pkt.tx_dest = QED_LL2_TX_DEST_LB;
790 break;
791 case CORE_TX_DEST_DROP:
792 default:
793 tx_pkt.tx_dest = QED_LL2_TX_DEST_DROP;
794 break;
795 }
796 tx_pkt.first_frag = first_frag;
797 tx_pkt.first_frag_len = p_buffer->packet_length;
798 tx_pkt.cookie = p_buffer;
799
800 rc = qed_ll2_prepare_tx_packet(p_hwfn, p_ll2_conn->my_id,
801 &tx_pkt, true);
802 if (rc) {
803 qed_ooo_put_ready_buffer(p_hwfn, p_hwfn->p_ooo_info,
804 p_buffer, false);
805 break;
806 }
807 }
808}
809
810static void
811qed_ooo_submit_rx_buffers(struct qed_hwfn *p_hwfn,
812 struct qed_ll2_info *p_ll2_conn)
813{
814 struct qed_ooo_buffer *p_buffer;
815 int rc;
816
817 while ((p_buffer = qed_ooo_get_free_buffer(p_hwfn,
818 p_hwfn->p_ooo_info))) {
819 rc = qed_ll2_post_rx_buffer(p_hwfn,
820 p_ll2_conn->my_id,
821 p_buffer->rx_buffer_phys_addr,
822 0, p_buffer, true);
823 if (rc) {
824 qed_ooo_put_free_buffer(p_hwfn,
825 p_hwfn->p_ooo_info, p_buffer);
826 break;
827 }
828 }
829}
830
831static int qed_ll2_lb_rxq_completion(struct qed_hwfn *p_hwfn, void *p_cookie)
832{
833 struct qed_ll2_info *p_ll2_conn = (struct qed_ll2_info *)p_cookie;
834 int rc;
835
836 if (!p_ll2_conn)
837 return 0;
838
839 if (!QED_LL2_RX_REGISTERED(p_ll2_conn))
840 return 0;
841
842 rc = qed_ll2_lb_rxq_handler(p_hwfn, p_ll2_conn);
843 if (rc)
844 return rc;
845
846 qed_ooo_submit_rx_buffers(p_hwfn, p_ll2_conn);
847 qed_ooo_submit_tx_buffers(p_hwfn, p_ll2_conn);
848
849 return 0;
850}
851
852static int qed_ll2_lb_txq_completion(struct qed_hwfn *p_hwfn, void *p_cookie)
853{
854 struct qed_ll2_info *p_ll2_conn = (struct qed_ll2_info *)p_cookie;
855 struct qed_ll2_tx_queue *p_tx = &p_ll2_conn->tx_queue;
856 struct qed_ll2_tx_packet *p_pkt = NULL;
857 struct qed_ooo_buffer *p_buffer;
858 bool b_dont_submit_rx = false;
859 u16 new_idx = 0, num_bds = 0;
860 int rc;
861
862 if (!p_ll2_conn)
863 return 0;
864
865 if (!QED_LL2_TX_REGISTERED(p_ll2_conn))
866 return 0;
867
868 new_idx = le16_to_cpu(*p_tx->p_fw_cons);
869 num_bds = ((s16)new_idx - (s16)p_tx->bds_idx);
870
871 if (!num_bds)
872 return 0;
873
874 while (num_bds) {
875 if (list_empty(&p_tx->active_descq))
876 return -EINVAL;
877
878 p_pkt = list_first_entry(&p_tx->active_descq,
879 struct qed_ll2_tx_packet, list_entry);
880 if (!p_pkt)
881 return -EINVAL;
882
883 if (p_pkt->bd_used != 1) {
884 DP_NOTICE(p_hwfn,
885 "Unexpectedly many BDs(%d) in TX OOO completion\n",
886 p_pkt->bd_used);
887 return -EINVAL;
888 }
889
890 list_del(&p_pkt->list_entry);
891
892 num_bds--;
893 p_tx->bds_idx++;
894 qed_chain_consume(&p_tx->txq_chain);
895
896 p_buffer = (struct qed_ooo_buffer *)p_pkt->cookie;
897 list_add_tail(&p_pkt->list_entry, &p_tx->free_descq);
898
899 if (b_dont_submit_rx) {
900 qed_ooo_put_free_buffer(p_hwfn, p_hwfn->p_ooo_info,
901 p_buffer);
902 continue;
903 }
904
905 rc = qed_ll2_post_rx_buffer(p_hwfn, p_ll2_conn->my_id,
906 p_buffer->rx_buffer_phys_addr, 0,
907 p_buffer, true);
908 if (rc != 0) {
909 qed_ooo_put_free_buffer(p_hwfn,
910 p_hwfn->p_ooo_info, p_buffer);
911 b_dont_submit_rx = true;
912 }
913 }
914
915 qed_ooo_submit_tx_buffers(p_hwfn, p_ll2_conn);
916
917 return 0;
918}
919
920static void qed_ll2_stop_ooo(struct qed_hwfn *p_hwfn)
921{
922 u8 *handle = &p_hwfn->pf_params.iscsi_pf_params.ll2_ooo_queue_id;
923
924 DP_VERBOSE(p_hwfn, (QED_MSG_STORAGE | QED_MSG_LL2),
925 "Stopping LL2 OOO queue [%02x]\n", *handle);
926
927 qed_ll2_terminate_connection(p_hwfn, *handle);
928 qed_ll2_release_connection(p_hwfn, *handle);
929 *handle = QED_LL2_UNUSED_HANDLE;
930}
931
932static int qed_sp_ll2_rx_queue_start(struct qed_hwfn *p_hwfn,
933 struct qed_ll2_info *p_ll2_conn,
934 u8 action_on_error)
935{
936 enum qed_ll2_conn_type conn_type = p_ll2_conn->input.conn_type;
937 struct qed_ll2_rx_queue *p_rx = &p_ll2_conn->rx_queue;
938 struct core_rx_start_ramrod_data *p_ramrod = NULL;
939 struct qed_spq_entry *p_ent = NULL;
940 struct qed_sp_init_data init_data;
941 u16 cqe_pbl_size;
942 int rc = 0;
943
944
945 memset(&init_data, 0, sizeof(init_data));
946 init_data.cid = p_ll2_conn->cid;
947 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
948 init_data.comp_mode = QED_SPQ_MODE_EBLOCK;
949
950 rc = qed_sp_init_request(p_hwfn, &p_ent,
951 CORE_RAMROD_RX_QUEUE_START,
952 PROTOCOLID_CORE, &init_data);
953 if (rc)
954 return rc;
955
956 p_ramrod = &p_ent->ramrod.core_rx_queue_start;
957 memset(p_ramrod, 0, sizeof(*p_ramrod));
958 p_ramrod->sb_id = cpu_to_le16(qed_int_get_sp_sb_id(p_hwfn));
959 p_ramrod->sb_index = p_rx->rx_sb_index;
960 p_ramrod->complete_event_flg = 1;
961
962 p_ramrod->mtu = cpu_to_le16(p_ll2_conn->input.mtu);
963 DMA_REGPAIR_LE(p_ramrod->bd_base, p_rx->rxq_chain.p_phys_addr);
964 cqe_pbl_size = (u16)qed_chain_get_page_cnt(&p_rx->rcq_chain);
965 p_ramrod->num_of_pbl_pages = cpu_to_le16(cqe_pbl_size);
966 DMA_REGPAIR_LE(p_ramrod->cqe_pbl_addr,
967 qed_chain_get_pbl_phys(&p_rx->rcq_chain));
968
969 p_ramrod->drop_ttl0_flg = p_ll2_conn->input.rx_drop_ttl0_flg;
970 p_ramrod->inner_vlan_stripping_en =
971 p_ll2_conn->input.rx_vlan_removal_en;
972
973 if (test_bit(QED_MF_UFP_SPECIFIC, &p_hwfn->cdev->mf_bits) &&
974 p_ll2_conn->input.conn_type == QED_LL2_TYPE_FCOE)
975 p_ramrod->report_outer_vlan = 1;
976 p_ramrod->queue_id = p_ll2_conn->queue_id;
977 p_ramrod->main_func_queue = p_ll2_conn->main_func_queue ? 1 : 0;
978
979 if (test_bit(QED_MF_LL2_NON_UNICAST, &p_hwfn->cdev->mf_bits) &&
980 p_ramrod->main_func_queue && conn_type != QED_LL2_TYPE_ROCE &&
981 conn_type != QED_LL2_TYPE_IWARP &&
982 (!QED_IS_NVMETCP_PERSONALITY(p_hwfn))) {
983 p_ramrod->mf_si_bcast_accept_all = 1;
984 p_ramrod->mf_si_mcast_accept_all = 1;
985 } else {
986 p_ramrod->mf_si_bcast_accept_all = 0;
987 p_ramrod->mf_si_mcast_accept_all = 0;
988 }
989
990 p_ramrod->action_on_error.error_type = action_on_error;
991 p_ramrod->gsi_offload_flag = p_ll2_conn->input.gsi_enable;
992 p_ramrod->zero_prod_flg = 1;
993
994 return qed_spq_post(p_hwfn, p_ent, NULL);
995}
996
997static int qed_sp_ll2_tx_queue_start(struct qed_hwfn *p_hwfn,
998 struct qed_ll2_info *p_ll2_conn)
999{
1000 enum qed_ll2_conn_type conn_type = p_ll2_conn->input.conn_type;
1001 struct qed_ll2_tx_queue *p_tx = &p_ll2_conn->tx_queue;
1002 struct core_tx_start_ramrod_data *p_ramrod = NULL;
1003 struct qed_spq_entry *p_ent = NULL;
1004 struct qed_sp_init_data init_data;
1005 u16 pq_id = 0, pbl_size;
1006 int rc = -EINVAL;
1007
1008 if (!QED_LL2_TX_REGISTERED(p_ll2_conn))
1009 return 0;
1010
1011 if (p_ll2_conn->input.conn_type == QED_LL2_TYPE_OOO)
1012 p_ll2_conn->tx_stats_en = 0;
1013 else
1014 p_ll2_conn->tx_stats_en = 1;
1015
1016
1017 memset(&init_data, 0, sizeof(init_data));
1018 init_data.cid = p_ll2_conn->cid;
1019 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
1020 init_data.comp_mode = QED_SPQ_MODE_EBLOCK;
1021
1022 rc = qed_sp_init_request(p_hwfn, &p_ent,
1023 CORE_RAMROD_TX_QUEUE_START,
1024 PROTOCOLID_CORE, &init_data);
1025 if (rc)
1026 return rc;
1027
1028 p_ramrod = &p_ent->ramrod.core_tx_queue_start;
1029
1030 p_ramrod->sb_id = cpu_to_le16(qed_int_get_sp_sb_id(p_hwfn));
1031 p_ramrod->sb_index = p_tx->tx_sb_index;
1032 p_ramrod->mtu = cpu_to_le16(p_ll2_conn->input.mtu);
1033 p_ramrod->stats_en = p_ll2_conn->tx_stats_en;
1034 p_ramrod->stats_id = p_ll2_conn->tx_stats_id;
1035
1036 DMA_REGPAIR_LE(p_ramrod->pbl_base_addr,
1037 qed_chain_get_pbl_phys(&p_tx->txq_chain));
1038 pbl_size = qed_chain_get_page_cnt(&p_tx->txq_chain);
1039 p_ramrod->pbl_size = cpu_to_le16(pbl_size);
1040
1041 switch (p_ll2_conn->input.tx_tc) {
1042 case PURE_LB_TC:
1043 pq_id = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_LB);
1044 break;
1045 case PKT_LB_TC:
1046 pq_id = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_OOO);
1047 break;
1048 default:
1049 pq_id = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_OFLD);
1050 break;
1051 }
1052
1053 p_ramrod->qm_pq_id = cpu_to_le16(pq_id);
1054
1055 switch (conn_type) {
1056 case QED_LL2_TYPE_FCOE:
1057 p_ramrod->conn_type = PROTOCOLID_FCOE;
1058 break;
1059 case QED_LL2_TYPE_TCP_ULP:
1060 p_ramrod->conn_type = PROTOCOLID_TCP_ULP;
1061 break;
1062 case QED_LL2_TYPE_ROCE:
1063 p_ramrod->conn_type = PROTOCOLID_ROCE;
1064 break;
1065 case QED_LL2_TYPE_IWARP:
1066 p_ramrod->conn_type = PROTOCOLID_IWARP;
1067 break;
1068 case QED_LL2_TYPE_OOO:
1069 if (p_hwfn->hw_info.personality == QED_PCI_ISCSI ||
1070 p_hwfn->hw_info.personality == QED_PCI_NVMETCP)
1071 p_ramrod->conn_type = PROTOCOLID_TCP_ULP;
1072 else
1073 p_ramrod->conn_type = PROTOCOLID_IWARP;
1074 break;
1075 default:
1076 p_ramrod->conn_type = PROTOCOLID_ETH;
1077 DP_NOTICE(p_hwfn, "Unknown connection type: %d\n", conn_type);
1078 }
1079
1080 p_ramrod->gsi_offload_flag = p_ll2_conn->input.gsi_enable;
1081
1082 rc = qed_spq_post(p_hwfn, p_ent, NULL);
1083 if (rc)
1084 return rc;
1085
1086 rc = qed_db_recovery_add(p_hwfn->cdev, p_tx->doorbell_addr,
1087 &p_tx->db_msg, DB_REC_WIDTH_32B,
1088 DB_REC_KERNEL);
1089 return rc;
1090}
1091
1092static int qed_sp_ll2_rx_queue_stop(struct qed_hwfn *p_hwfn,
1093 struct qed_ll2_info *p_ll2_conn)
1094{
1095 struct core_rx_stop_ramrod_data *p_ramrod = NULL;
1096 struct qed_spq_entry *p_ent = NULL;
1097 struct qed_sp_init_data init_data;
1098 int rc = -EINVAL;
1099
1100
1101 memset(&init_data, 0, sizeof(init_data));
1102 init_data.cid = p_ll2_conn->cid;
1103 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
1104 init_data.comp_mode = QED_SPQ_MODE_EBLOCK;
1105
1106 rc = qed_sp_init_request(p_hwfn, &p_ent,
1107 CORE_RAMROD_RX_QUEUE_STOP,
1108 PROTOCOLID_CORE, &init_data);
1109 if (rc)
1110 return rc;
1111
1112 p_ramrod = &p_ent->ramrod.core_rx_queue_stop;
1113
1114 p_ramrod->complete_event_flg = 1;
1115 p_ramrod->queue_id = p_ll2_conn->queue_id;
1116
1117 return qed_spq_post(p_hwfn, p_ent, NULL);
1118}
1119
1120static int qed_sp_ll2_tx_queue_stop(struct qed_hwfn *p_hwfn,
1121 struct qed_ll2_info *p_ll2_conn)
1122{
1123 struct qed_ll2_tx_queue *p_tx = &p_ll2_conn->tx_queue;
1124 struct qed_spq_entry *p_ent = NULL;
1125 struct qed_sp_init_data init_data;
1126 int rc = -EINVAL;
1127 qed_db_recovery_del(p_hwfn->cdev, p_tx->doorbell_addr, &p_tx->db_msg);
1128
1129
1130 memset(&init_data, 0, sizeof(init_data));
1131 init_data.cid = p_ll2_conn->cid;
1132 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
1133 init_data.comp_mode = QED_SPQ_MODE_EBLOCK;
1134
1135 rc = qed_sp_init_request(p_hwfn, &p_ent,
1136 CORE_RAMROD_TX_QUEUE_STOP,
1137 PROTOCOLID_CORE, &init_data);
1138 if (rc)
1139 return rc;
1140
1141 return qed_spq_post(p_hwfn, p_ent, NULL);
1142}
1143
1144static int
1145qed_ll2_acquire_connection_rx(struct qed_hwfn *p_hwfn,
1146 struct qed_ll2_info *p_ll2_info)
1147{
1148 struct qed_chain_init_params params = {
1149 .intended_use = QED_CHAIN_USE_TO_CONSUME_PRODUCE,
1150 .cnt_type = QED_CHAIN_CNT_TYPE_U16,
1151 .num_elems = p_ll2_info->input.rx_num_desc,
1152 };
1153 struct qed_dev *cdev = p_hwfn->cdev;
1154 struct qed_ll2_rx_packet *p_descq;
1155 u32 capacity;
1156 int rc = 0;
1157
1158 if (!p_ll2_info->input.rx_num_desc)
1159 goto out;
1160
1161 params.mode = QED_CHAIN_MODE_NEXT_PTR;
1162 params.elem_size = sizeof(struct core_rx_bd);
1163
1164 rc = qed_chain_alloc(cdev, &p_ll2_info->rx_queue.rxq_chain, ¶ms);
1165 if (rc) {
1166 DP_NOTICE(p_hwfn, "Failed to allocate ll2 rxq chain\n");
1167 goto out;
1168 }
1169
1170 capacity = qed_chain_get_capacity(&p_ll2_info->rx_queue.rxq_chain);
1171 p_descq = kcalloc(capacity, sizeof(struct qed_ll2_rx_packet),
1172 GFP_KERNEL);
1173 if (!p_descq) {
1174 rc = -ENOMEM;
1175 DP_NOTICE(p_hwfn, "Failed to allocate ll2 Rx desc\n");
1176 goto out;
1177 }
1178 p_ll2_info->rx_queue.descq_array = p_descq;
1179
1180 params.mode = QED_CHAIN_MODE_PBL;
1181 params.elem_size = sizeof(struct core_rx_fast_path_cqe);
1182
1183 rc = qed_chain_alloc(cdev, &p_ll2_info->rx_queue.rcq_chain, ¶ms);
1184 if (rc) {
1185 DP_NOTICE(p_hwfn, "Failed to allocate ll2 rcq chain\n");
1186 goto out;
1187 }
1188
1189 DP_VERBOSE(p_hwfn, QED_MSG_LL2,
1190 "Allocated LL2 Rxq [Type %08x] with 0x%08x buffers\n",
1191 p_ll2_info->input.conn_type, p_ll2_info->input.rx_num_desc);
1192
1193out:
1194 return rc;
1195}
1196
1197static int qed_ll2_acquire_connection_tx(struct qed_hwfn *p_hwfn,
1198 struct qed_ll2_info *p_ll2_info)
1199{
1200 struct qed_chain_init_params params = {
1201 .mode = QED_CHAIN_MODE_PBL,
1202 .intended_use = QED_CHAIN_USE_TO_CONSUME_PRODUCE,
1203 .cnt_type = QED_CHAIN_CNT_TYPE_U16,
1204 .num_elems = p_ll2_info->input.tx_num_desc,
1205 .elem_size = sizeof(struct core_tx_bd),
1206 };
1207 struct qed_ll2_tx_packet *p_descq;
1208 size_t desc_size;
1209 u32 capacity;
1210 int rc = 0;
1211
1212 if (!p_ll2_info->input.tx_num_desc)
1213 goto out;
1214
1215 rc = qed_chain_alloc(p_hwfn->cdev, &p_ll2_info->tx_queue.txq_chain,
1216 ¶ms);
1217 if (rc)
1218 goto out;
1219
1220 capacity = qed_chain_get_capacity(&p_ll2_info->tx_queue.txq_chain);
1221
1222 desc_size = struct_size(p_descq, bds_set,
1223 p_ll2_info->input.tx_max_bds_per_packet);
1224
1225 p_descq = kcalloc(capacity, desc_size, GFP_KERNEL);
1226 if (!p_descq) {
1227 rc = -ENOMEM;
1228 goto out;
1229 }
1230 p_ll2_info->tx_queue.descq_mem = p_descq;
1231
1232 DP_VERBOSE(p_hwfn, QED_MSG_LL2,
1233 "Allocated LL2 Txq [Type %08x] with 0x%08x buffers\n",
1234 p_ll2_info->input.conn_type, p_ll2_info->input.tx_num_desc);
1235
1236out:
1237 if (rc)
1238 DP_NOTICE(p_hwfn,
1239 "Can't allocate memory for Tx LL2 with 0x%08x buffers\n",
1240 p_ll2_info->input.tx_num_desc);
1241 return rc;
1242}
1243
1244static int
1245qed_ll2_acquire_connection_ooo(struct qed_hwfn *p_hwfn,
1246 struct qed_ll2_info *p_ll2_info, u16 mtu)
1247{
1248 struct qed_ooo_buffer *p_buf = NULL;
1249 void *p_virt;
1250 u16 buf_idx;
1251 int rc = 0;
1252
1253 if (p_ll2_info->input.conn_type != QED_LL2_TYPE_OOO)
1254 return rc;
1255
1256
1257 if (!p_ll2_info->input.rx_num_ooo_buffers) {
1258 u16 num_desc = p_ll2_info->input.rx_num_desc;
1259
1260 if (!num_desc)
1261 return -EINVAL;
1262 p_ll2_info->input.rx_num_ooo_buffers = num_desc * 2;
1263 }
1264
1265 for (buf_idx = 0; buf_idx < p_ll2_info->input.rx_num_ooo_buffers;
1266 buf_idx++) {
1267 p_buf = kzalloc(sizeof(*p_buf), GFP_KERNEL);
1268 if (!p_buf) {
1269 rc = -ENOMEM;
1270 goto out;
1271 }
1272
1273 p_buf->rx_buffer_size = mtu + 26 + ETH_CACHE_LINE_SIZE;
1274 p_buf->rx_buffer_size = (p_buf->rx_buffer_size +
1275 ETH_CACHE_LINE_SIZE - 1) &
1276 ~(ETH_CACHE_LINE_SIZE - 1);
1277 p_virt = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev,
1278 p_buf->rx_buffer_size,
1279 &p_buf->rx_buffer_phys_addr,
1280 GFP_KERNEL);
1281 if (!p_virt) {
1282 kfree(p_buf);
1283 rc = -ENOMEM;
1284 goto out;
1285 }
1286
1287 p_buf->rx_buffer_virt_addr = p_virt;
1288 qed_ooo_put_free_buffer(p_hwfn, p_hwfn->p_ooo_info, p_buf);
1289 }
1290
1291 DP_VERBOSE(p_hwfn, QED_MSG_LL2,
1292 "Allocated [%04x] LL2 OOO buffers [each of size 0x%08x]\n",
1293 p_ll2_info->input.rx_num_ooo_buffers, p_buf->rx_buffer_size);
1294
1295out:
1296 return rc;
1297}
1298
1299static int
1300qed_ll2_set_cbs(struct qed_ll2_info *p_ll2_info, const struct qed_ll2_cbs *cbs)
1301{
1302 if (!cbs || (!cbs->rx_comp_cb ||
1303 !cbs->rx_release_cb ||
1304 !cbs->tx_comp_cb || !cbs->tx_release_cb || !cbs->cookie))
1305 return -EINVAL;
1306
1307 p_ll2_info->cbs.rx_comp_cb = cbs->rx_comp_cb;
1308 p_ll2_info->cbs.rx_release_cb = cbs->rx_release_cb;
1309 p_ll2_info->cbs.tx_comp_cb = cbs->tx_comp_cb;
1310 p_ll2_info->cbs.tx_release_cb = cbs->tx_release_cb;
1311 p_ll2_info->cbs.slowpath_cb = cbs->slowpath_cb;
1312 p_ll2_info->cbs.cookie = cbs->cookie;
1313
1314 return 0;
1315}
1316
1317static void _qed_ll2_calc_allowed_conns(struct qed_hwfn *p_hwfn,
1318 struct qed_ll2_acquire_data *data,
1319 u8 *start_idx, u8 *last_idx)
1320{
1321
1322
1323
1324 if (data->input.rx_conn_type == QED_LL2_RX_TYPE_LEGACY) {
1325 *start_idx = QED_LL2_LEGACY_CONN_BASE_PF;
1326 *last_idx = *start_idx +
1327 QED_MAX_NUM_OF_LEGACY_LL2_CONNS_PF;
1328 } else {
1329
1330 *start_idx = QED_LL2_CTX_CONN_BASE_PF;
1331 *last_idx = *start_idx +
1332 QED_MAX_NUM_OF_CTX_LL2_CONNS_PF;
1333 }
1334}
1335
1336static enum core_error_handle
1337qed_ll2_get_error_choice(enum qed_ll2_error_handle err)
1338{
1339 switch (err) {
1340 case QED_LL2_DROP_PACKET:
1341 return LL2_DROP_PACKET;
1342 case QED_LL2_DO_NOTHING:
1343 return LL2_DO_NOTHING;
1344 case QED_LL2_ASSERT:
1345 return LL2_ASSERT;
1346 default:
1347 return LL2_DO_NOTHING;
1348 }
1349}
1350
1351int qed_ll2_acquire_connection(void *cxt, struct qed_ll2_acquire_data *data)
1352{
1353 struct qed_hwfn *p_hwfn = cxt;
1354 qed_int_comp_cb_t comp_rx_cb, comp_tx_cb;
1355 struct qed_ll2_info *p_ll2_info = NULL;
1356 u8 i, first_idx, last_idx, *p_tx_max;
1357 int rc;
1358
1359 if (!data->p_connection_handle || !p_hwfn->p_ll2_info)
1360 return -EINVAL;
1361
1362 _qed_ll2_calc_allowed_conns(p_hwfn, data, &first_idx, &last_idx);
1363
1364
1365 for (i = first_idx; i < last_idx; i++) {
1366 mutex_lock(&p_hwfn->p_ll2_info[i].mutex);
1367 if (p_hwfn->p_ll2_info[i].b_active) {
1368 mutex_unlock(&p_hwfn->p_ll2_info[i].mutex);
1369 continue;
1370 }
1371
1372 p_hwfn->p_ll2_info[i].b_active = true;
1373 p_ll2_info = &p_hwfn->p_ll2_info[i];
1374 mutex_unlock(&p_hwfn->p_ll2_info[i].mutex);
1375 break;
1376 }
1377 if (!p_ll2_info)
1378 return -EBUSY;
1379
1380 memcpy(&p_ll2_info->input, &data->input, sizeof(p_ll2_info->input));
1381
1382 switch (data->input.tx_dest) {
1383 case QED_LL2_TX_DEST_NW:
1384 p_ll2_info->tx_dest = CORE_TX_DEST_NW;
1385 break;
1386 case QED_LL2_TX_DEST_LB:
1387 p_ll2_info->tx_dest = CORE_TX_DEST_LB;
1388 break;
1389 case QED_LL2_TX_DEST_DROP:
1390 p_ll2_info->tx_dest = CORE_TX_DEST_DROP;
1391 break;
1392 default:
1393 return -EINVAL;
1394 }
1395
1396 if (data->input.conn_type == QED_LL2_TYPE_OOO ||
1397 data->input.secondary_queue)
1398 p_ll2_info->main_func_queue = false;
1399 else
1400 p_ll2_info->main_func_queue = true;
1401
1402
1403 p_tx_max = &p_ll2_info->input.tx_max_bds_per_packet;
1404 if (*p_tx_max == 0)
1405 *p_tx_max = CORE_LL2_TX_MAX_BDS_PER_PACKET;
1406 else
1407 *p_tx_max = min_t(u8, *p_tx_max,
1408 CORE_LL2_TX_MAX_BDS_PER_PACKET);
1409
1410 rc = qed_ll2_set_cbs(p_ll2_info, data->cbs);
1411 if (rc) {
1412 DP_NOTICE(p_hwfn, "Invalid callback functions\n");
1413 goto q_allocate_fail;
1414 }
1415
1416 rc = qed_ll2_acquire_connection_rx(p_hwfn, p_ll2_info);
1417 if (rc)
1418 goto q_allocate_fail;
1419
1420 rc = qed_ll2_acquire_connection_tx(p_hwfn, p_ll2_info);
1421 if (rc)
1422 goto q_allocate_fail;
1423
1424 rc = qed_ll2_acquire_connection_ooo(p_hwfn, p_ll2_info,
1425 data->input.mtu);
1426 if (rc)
1427 goto q_allocate_fail;
1428
1429
1430 if (data->input.conn_type == QED_LL2_TYPE_OOO) {
1431 comp_rx_cb = qed_ll2_lb_rxq_completion;
1432 comp_tx_cb = qed_ll2_lb_txq_completion;
1433 } else {
1434 comp_rx_cb = qed_ll2_rxq_completion;
1435 comp_tx_cb = qed_ll2_txq_completion;
1436 }
1437
1438 if (data->input.rx_num_desc) {
1439 qed_int_register_cb(p_hwfn, comp_rx_cb,
1440 &p_hwfn->p_ll2_info[i],
1441 &p_ll2_info->rx_queue.rx_sb_index,
1442 &p_ll2_info->rx_queue.p_fw_cons);
1443 p_ll2_info->rx_queue.b_cb_registered = true;
1444 }
1445
1446 if (data->input.tx_num_desc) {
1447 qed_int_register_cb(p_hwfn,
1448 comp_tx_cb,
1449 &p_hwfn->p_ll2_info[i],
1450 &p_ll2_info->tx_queue.tx_sb_index,
1451 &p_ll2_info->tx_queue.p_fw_cons);
1452 p_ll2_info->tx_queue.b_cb_registered = true;
1453 }
1454
1455 *data->p_connection_handle = i;
1456 return rc;
1457
1458q_allocate_fail:
1459 qed_ll2_release_connection(p_hwfn, i);
1460 return -ENOMEM;
1461}
1462
1463static int qed_ll2_establish_connection_rx(struct qed_hwfn *p_hwfn,
1464 struct qed_ll2_info *p_ll2_conn)
1465{
1466 enum qed_ll2_error_handle error_input;
1467 enum core_error_handle error_mode;
1468 u8 action_on_error = 0;
1469 int rc;
1470
1471 if (!QED_LL2_RX_REGISTERED(p_ll2_conn))
1472 return 0;
1473
1474 DIRECT_REG_WR(p_ll2_conn->rx_queue.set_prod_addr, 0x0);
1475 error_input = p_ll2_conn->input.ai_err_packet_too_big;
1476 error_mode = qed_ll2_get_error_choice(error_input);
1477 SET_FIELD(action_on_error,
1478 CORE_RX_ACTION_ON_ERROR_PACKET_TOO_BIG, error_mode);
1479 error_input = p_ll2_conn->input.ai_err_no_buf;
1480 error_mode = qed_ll2_get_error_choice(error_input);
1481 SET_FIELD(action_on_error, CORE_RX_ACTION_ON_ERROR_NO_BUFF, error_mode);
1482
1483 rc = qed_sp_ll2_rx_queue_start(p_hwfn, p_ll2_conn, action_on_error);
1484 if (rc)
1485 return rc;
1486
1487 if (p_ll2_conn->rx_queue.ctx_based) {
1488 rc = qed_db_recovery_add(p_hwfn->cdev,
1489 p_ll2_conn->rx_queue.set_prod_addr,
1490 &p_ll2_conn->rx_queue.db_data,
1491 DB_REC_WIDTH_64B, DB_REC_KERNEL);
1492 }
1493
1494 return rc;
1495}
1496
1497static void
1498qed_ll2_establish_connection_ooo(struct qed_hwfn *p_hwfn,
1499 struct qed_ll2_info *p_ll2_conn)
1500{
1501 if (p_ll2_conn->input.conn_type != QED_LL2_TYPE_OOO)
1502 return;
1503
1504 qed_ooo_release_all_isles(p_hwfn, p_hwfn->p_ooo_info);
1505 qed_ooo_submit_rx_buffers(p_hwfn, p_ll2_conn);
1506}
1507
1508static inline u8 qed_ll2_handle_to_queue_id(struct qed_hwfn *p_hwfn,
1509 u8 handle,
1510 u8 ll2_queue_type)
1511{
1512 u8 qid;
1513
1514 if (ll2_queue_type == QED_LL2_RX_TYPE_LEGACY)
1515 return p_hwfn->hw_info.resc_start[QED_LL2_RAM_QUEUE] + handle;
1516
1517
1518
1519
1520
1521
1522
1523 qid = p_hwfn->hw_info.resc_start[QED_LL2_CTX_QUEUE] +
1524 MAX_NUM_LL2_RX_RAM_QUEUES;
1525
1526
1527
1528
1529 qid += (handle - QED_MAX_NUM_OF_LEGACY_LL2_CONNS_PF);
1530
1531 return qid;
1532}
1533
1534int qed_ll2_establish_connection(void *cxt, u8 connection_handle)
1535{
1536 struct e4_core_conn_context *p_cxt;
1537 struct qed_ll2_tx_packet *p_pkt;
1538 struct qed_ll2_info *p_ll2_conn;
1539 struct qed_hwfn *p_hwfn = cxt;
1540 struct qed_ll2_rx_queue *p_rx;
1541 struct qed_ll2_tx_queue *p_tx;
1542 struct qed_cxt_info cxt_info;
1543 struct qed_ptt *p_ptt;
1544 int rc = -EINVAL;
1545 u32 i, capacity;
1546 size_t desc_size;
1547 u8 qid;
1548
1549 p_ptt = qed_ptt_acquire(p_hwfn);
1550 if (!p_ptt)
1551 return -EAGAIN;
1552
1553 p_ll2_conn = qed_ll2_handle_sanity_lock(p_hwfn, connection_handle);
1554 if (!p_ll2_conn) {
1555 rc = -EINVAL;
1556 goto out;
1557 }
1558
1559 p_rx = &p_ll2_conn->rx_queue;
1560 p_tx = &p_ll2_conn->tx_queue;
1561
1562 qed_chain_reset(&p_rx->rxq_chain);
1563 qed_chain_reset(&p_rx->rcq_chain);
1564 INIT_LIST_HEAD(&p_rx->active_descq);
1565 INIT_LIST_HEAD(&p_rx->free_descq);
1566 INIT_LIST_HEAD(&p_rx->posting_descq);
1567 spin_lock_init(&p_rx->lock);
1568 capacity = qed_chain_get_capacity(&p_rx->rxq_chain);
1569 for (i = 0; i < capacity; i++)
1570 list_add_tail(&p_rx->descq_array[i].list_entry,
1571 &p_rx->free_descq);
1572 *p_rx->p_fw_cons = 0;
1573
1574 qed_chain_reset(&p_tx->txq_chain);
1575 INIT_LIST_HEAD(&p_tx->active_descq);
1576 INIT_LIST_HEAD(&p_tx->free_descq);
1577 INIT_LIST_HEAD(&p_tx->sending_descq);
1578 spin_lock_init(&p_tx->lock);
1579 capacity = qed_chain_get_capacity(&p_tx->txq_chain);
1580
1581 desc_size = struct_size(p_pkt, bds_set,
1582 p_ll2_conn->input.tx_max_bds_per_packet);
1583
1584 for (i = 0; i < capacity; i++) {
1585 p_pkt = p_tx->descq_mem + desc_size * i;
1586 list_add_tail(&p_pkt->list_entry, &p_tx->free_descq);
1587 }
1588 p_tx->cur_completing_bd_idx = 0;
1589 p_tx->bds_idx = 0;
1590 p_tx->b_completing_packet = false;
1591 p_tx->cur_send_packet = NULL;
1592 p_tx->cur_send_frag_num = 0;
1593 p_tx->cur_completing_frag_num = 0;
1594 *p_tx->p_fw_cons = 0;
1595
1596 rc = qed_cxt_acquire_cid(p_hwfn, PROTOCOLID_CORE, &p_ll2_conn->cid);
1597 if (rc)
1598 goto out;
1599 cxt_info.iid = p_ll2_conn->cid;
1600 rc = qed_cxt_get_cid_info(p_hwfn, &cxt_info);
1601 if (rc) {
1602 DP_NOTICE(p_hwfn, "Cannot find context info for cid=%d\n",
1603 p_ll2_conn->cid);
1604 goto out;
1605 }
1606
1607 p_cxt = cxt_info.p_cxt;
1608
1609 memset(p_cxt, 0, sizeof(*p_cxt));
1610
1611 qid = qed_ll2_handle_to_queue_id(p_hwfn, connection_handle,
1612 p_ll2_conn->input.rx_conn_type);
1613 p_ll2_conn->queue_id = qid;
1614 p_ll2_conn->tx_stats_id = qid;
1615
1616 DP_VERBOSE(p_hwfn, QED_MSG_LL2,
1617 "Establishing ll2 queue. PF %d ctx_based=%d abs qid=%d\n",
1618 p_hwfn->rel_pf_id, p_ll2_conn->input.rx_conn_type, qid);
1619
1620 if (p_ll2_conn->input.rx_conn_type == QED_LL2_RX_TYPE_LEGACY) {
1621 p_rx->set_prod_addr = p_hwfn->regview +
1622 GTT_BAR0_MAP_REG_TSDM_RAM + TSTORM_LL2_RX_PRODS_OFFSET(qid);
1623 } else {
1624
1625 p_rx->ctx_based = 1;
1626
1627 p_rx->set_prod_addr = p_hwfn->doorbells +
1628 p_hwfn->dpi_start_offset +
1629 DB_ADDR_SHIFT(DQ_PWM_OFFSET_TCM_LL2_PROD_UPDATE);
1630
1631
1632 p_rx->db_data.icid = cpu_to_le16((u16)p_ll2_conn->cid);
1633 SET_FIELD(p_rx->db_data.params,
1634 CORE_PWM_PROD_UPDATE_DATA_AGG_CMD, DB_AGG_CMD_SET);
1635 SET_FIELD(p_rx->db_data.params,
1636 CORE_PWM_PROD_UPDATE_DATA_RESERVED1, 0);
1637 }
1638
1639 p_tx->doorbell_addr = (u8 __iomem *)p_hwfn->doorbells +
1640 qed_db_addr(p_ll2_conn->cid,
1641 DQ_DEMS_LEGACY);
1642
1643 SET_FIELD(p_tx->db_msg.params, CORE_DB_DATA_DEST, DB_DEST_XCM);
1644 SET_FIELD(p_tx->db_msg.params, CORE_DB_DATA_AGG_CMD, DB_AGG_CMD_SET);
1645 SET_FIELD(p_tx->db_msg.params, CORE_DB_DATA_AGG_VAL_SEL,
1646 DQ_XCM_CORE_TX_BD_PROD_CMD);
1647 p_tx->db_msg.agg_flags = DQ_XCM_CORE_DQ_CF_CMD;
1648
1649 rc = qed_ll2_establish_connection_rx(p_hwfn, p_ll2_conn);
1650 if (rc)
1651 goto out;
1652
1653 rc = qed_sp_ll2_tx_queue_start(p_hwfn, p_ll2_conn);
1654 if (rc)
1655 goto out;
1656
1657 if (!QED_IS_RDMA_PERSONALITY(p_hwfn) &&
1658 !QED_IS_NVMETCP_PERSONALITY(p_hwfn))
1659 qed_wr(p_hwfn, p_ptt, PRS_REG_USE_LIGHT_L2, 1);
1660
1661 qed_ll2_establish_connection_ooo(p_hwfn, p_ll2_conn);
1662
1663 if (p_ll2_conn->input.conn_type == QED_LL2_TYPE_FCOE) {
1664 if (!test_bit(QED_MF_UFP_SPECIFIC, &p_hwfn->cdev->mf_bits))
1665 qed_llh_add_protocol_filter(p_hwfn->cdev, 0,
1666 QED_LLH_FILTER_ETHERTYPE,
1667 ETH_P_FCOE, 0);
1668 qed_llh_add_protocol_filter(p_hwfn->cdev, 0,
1669 QED_LLH_FILTER_ETHERTYPE,
1670 ETH_P_FIP, 0);
1671 }
1672
1673out:
1674 qed_ptt_release(p_hwfn, p_ptt);
1675 return rc;
1676}
1677
1678static void qed_ll2_post_rx_buffer_notify_fw(struct qed_hwfn *p_hwfn,
1679 struct qed_ll2_rx_queue *p_rx,
1680 struct qed_ll2_rx_packet *p_curp)
1681{
1682 struct qed_ll2_rx_packet *p_posting_packet = NULL;
1683 struct core_ll2_rx_prod rx_prod = { 0, 0 };
1684 bool b_notify_fw = false;
1685 u16 bd_prod, cq_prod;
1686
1687
1688 while (!list_empty(&p_rx->posting_descq)) {
1689 p_posting_packet = list_first_entry(&p_rx->posting_descq,
1690 struct qed_ll2_rx_packet,
1691 list_entry);
1692 list_move_tail(&p_posting_packet->list_entry,
1693 &p_rx->active_descq);
1694 b_notify_fw = true;
1695 }
1696
1697
1698 if (p_curp) {
1699 list_add_tail(&p_curp->list_entry, &p_rx->active_descq);
1700 b_notify_fw = true;
1701 }
1702
1703 if (!b_notify_fw)
1704 return;
1705
1706 bd_prod = qed_chain_get_prod_idx(&p_rx->rxq_chain);
1707 cq_prod = qed_chain_get_prod_idx(&p_rx->rcq_chain);
1708 if (p_rx->ctx_based) {
1709
1710 p_rx->db_data.prod.bd_prod = cpu_to_le16(bd_prod);
1711 p_rx->db_data.prod.cqe_prod = cpu_to_le16(cq_prod);
1712
1713
1714
1715 dma_wmb();
1716 DIRECT_REG_WR64(p_rx->set_prod_addr,
1717 *((u64 *)&p_rx->db_data));
1718 } else {
1719 rx_prod.bd_prod = cpu_to_le16(bd_prod);
1720 rx_prod.cqe_prod = cpu_to_le16(cq_prod);
1721
1722
1723
1724
1725 dma_wmb();
1726
1727 DIRECT_REG_WR(p_rx->set_prod_addr, *((u32 *)&rx_prod));
1728 }
1729}
1730
1731int qed_ll2_post_rx_buffer(void *cxt,
1732 u8 connection_handle,
1733 dma_addr_t addr,
1734 u16 buf_len, void *cookie, u8 notify_fw)
1735{
1736 struct qed_hwfn *p_hwfn = cxt;
1737 struct core_rx_bd_with_buff_len *p_curb = NULL;
1738 struct qed_ll2_rx_packet *p_curp = NULL;
1739 struct qed_ll2_info *p_ll2_conn;
1740 struct qed_ll2_rx_queue *p_rx;
1741 unsigned long flags;
1742 void *p_data;
1743 int rc = 0;
1744
1745 p_ll2_conn = qed_ll2_handle_sanity(p_hwfn, connection_handle);
1746 if (!p_ll2_conn)
1747 return -EINVAL;
1748 p_rx = &p_ll2_conn->rx_queue;
1749 if (!p_rx->set_prod_addr)
1750 return -EIO;
1751
1752 spin_lock_irqsave(&p_rx->lock, flags);
1753 if (!list_empty(&p_rx->free_descq))
1754 p_curp = list_first_entry(&p_rx->free_descq,
1755 struct qed_ll2_rx_packet, list_entry);
1756 if (p_curp) {
1757 if (qed_chain_get_elem_left(&p_rx->rxq_chain) &&
1758 qed_chain_get_elem_left(&p_rx->rcq_chain)) {
1759 p_data = qed_chain_produce(&p_rx->rxq_chain);
1760 p_curb = (struct core_rx_bd_with_buff_len *)p_data;
1761 qed_chain_produce(&p_rx->rcq_chain);
1762 }
1763 }
1764
1765
1766 if (!p_curp || !p_curb) {
1767 rc = -EBUSY;
1768 p_curp = NULL;
1769 goto out_notify;
1770 }
1771
1772
1773 DMA_REGPAIR_LE(p_curb->addr, addr);
1774 p_curb->buff_length = cpu_to_le16(buf_len);
1775 p_curp->rx_buf_addr = addr;
1776 p_curp->cookie = cookie;
1777 p_curp->rxq_bd = p_curb;
1778 p_curp->buf_length = buf_len;
1779 list_del(&p_curp->list_entry);
1780
1781
1782 if (!notify_fw) {
1783 list_add_tail(&p_curp->list_entry, &p_rx->posting_descq);
1784 goto out;
1785 }
1786
1787out_notify:
1788 qed_ll2_post_rx_buffer_notify_fw(p_hwfn, p_rx, p_curp);
1789out:
1790 spin_unlock_irqrestore(&p_rx->lock, flags);
1791 return rc;
1792}
1793
1794static void qed_ll2_prepare_tx_packet_set(struct qed_hwfn *p_hwfn,
1795 struct qed_ll2_tx_queue *p_tx,
1796 struct qed_ll2_tx_packet *p_curp,
1797 struct qed_ll2_tx_pkt_info *pkt,
1798 u8 notify_fw)
1799{
1800 list_del(&p_curp->list_entry);
1801 p_curp->cookie = pkt->cookie;
1802 p_curp->bd_used = pkt->num_of_bds;
1803 p_curp->notify_fw = notify_fw;
1804 p_tx->cur_send_packet = p_curp;
1805 p_tx->cur_send_frag_num = 0;
1806
1807 p_curp->bds_set[p_tx->cur_send_frag_num].tx_frag = pkt->first_frag;
1808 p_curp->bds_set[p_tx->cur_send_frag_num].frag_len = pkt->first_frag_len;
1809 p_tx->cur_send_frag_num++;
1810}
1811
1812static void
1813qed_ll2_prepare_tx_packet_set_bd(struct qed_hwfn *p_hwfn,
1814 struct qed_ll2_info *p_ll2,
1815 struct qed_ll2_tx_packet *p_curp,
1816 struct qed_ll2_tx_pkt_info *pkt)
1817{
1818 struct qed_chain *p_tx_chain = &p_ll2->tx_queue.txq_chain;
1819 u16 prod_idx = qed_chain_get_prod_idx(p_tx_chain);
1820 struct core_tx_bd *start_bd = NULL;
1821 enum core_roce_flavor_type roce_flavor;
1822 enum core_tx_dest tx_dest;
1823 u16 bd_data = 0, frag_idx;
1824 u16 bitfield1;
1825
1826 roce_flavor = (pkt->qed_roce_flavor == QED_LL2_ROCE) ? CORE_ROCE
1827 : CORE_RROCE;
1828
1829 switch (pkt->tx_dest) {
1830 case QED_LL2_TX_DEST_NW:
1831 tx_dest = CORE_TX_DEST_NW;
1832 break;
1833 case QED_LL2_TX_DEST_LB:
1834 tx_dest = CORE_TX_DEST_LB;
1835 break;
1836 case QED_LL2_TX_DEST_DROP:
1837 tx_dest = CORE_TX_DEST_DROP;
1838 break;
1839 default:
1840 tx_dest = CORE_TX_DEST_LB;
1841 break;
1842 }
1843
1844 start_bd = (struct core_tx_bd *)qed_chain_produce(p_tx_chain);
1845 if (QED_IS_IWARP_PERSONALITY(p_hwfn) &&
1846 p_ll2->input.conn_type == QED_LL2_TYPE_OOO) {
1847 start_bd->nw_vlan_or_lb_echo =
1848 cpu_to_le16(IWARP_LL2_IN_ORDER_TX_QUEUE);
1849 } else {
1850 start_bd->nw_vlan_or_lb_echo = cpu_to_le16(pkt->vlan);
1851 if (test_bit(QED_MF_UFP_SPECIFIC, &p_hwfn->cdev->mf_bits) &&
1852 p_ll2->input.conn_type == QED_LL2_TYPE_FCOE)
1853 pkt->remove_stag = true;
1854 }
1855
1856 bitfield1 = le16_to_cpu(start_bd->bitfield1);
1857 SET_FIELD(bitfield1, CORE_TX_BD_L4_HDR_OFFSET_W, pkt->l4_hdr_offset_w);
1858 SET_FIELD(bitfield1, CORE_TX_BD_TX_DST, tx_dest);
1859 start_bd->bitfield1 = cpu_to_le16(bitfield1);
1860
1861 bd_data |= pkt->bd_flags;
1862 SET_FIELD(bd_data, CORE_TX_BD_DATA_START_BD, 0x1);
1863 SET_FIELD(bd_data, CORE_TX_BD_DATA_NBDS, pkt->num_of_bds);
1864 SET_FIELD(bd_data, CORE_TX_BD_DATA_ROCE_FLAV, roce_flavor);
1865 SET_FIELD(bd_data, CORE_TX_BD_DATA_IP_CSUM, !!(pkt->enable_ip_cksum));
1866 SET_FIELD(bd_data, CORE_TX_BD_DATA_L4_CSUM, !!(pkt->enable_l4_cksum));
1867 SET_FIELD(bd_data, CORE_TX_BD_DATA_IP_LEN, !!(pkt->calc_ip_len));
1868 SET_FIELD(bd_data, CORE_TX_BD_DATA_DISABLE_STAG_INSERTION,
1869 !!(pkt->remove_stag));
1870
1871 start_bd->bd_data.as_bitfield = cpu_to_le16(bd_data);
1872 DMA_REGPAIR_LE(start_bd->addr, pkt->first_frag);
1873 start_bd->nbytes = cpu_to_le16(pkt->first_frag_len);
1874
1875 DP_VERBOSE(p_hwfn,
1876 (NETIF_MSG_TX_QUEUED | QED_MSG_LL2),
1877 "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",
1878 p_ll2->queue_id,
1879 p_ll2->cid,
1880 p_ll2->input.conn_type,
1881 prod_idx,
1882 pkt->first_frag_len,
1883 pkt->num_of_bds,
1884 le32_to_cpu(start_bd->addr.hi),
1885 le32_to_cpu(start_bd->addr.lo));
1886
1887 if (p_ll2->tx_queue.cur_send_frag_num == pkt->num_of_bds)
1888 return;
1889
1890
1891 for (frag_idx = p_ll2->tx_queue.cur_send_frag_num;
1892 frag_idx < pkt->num_of_bds; frag_idx++) {
1893 struct core_tx_bd **p_bd = &p_curp->bds_set[frag_idx].txq_bd;
1894
1895 *p_bd = (struct core_tx_bd *)qed_chain_produce(p_tx_chain);
1896 (*p_bd)->bd_data.as_bitfield = 0;
1897 (*p_bd)->bitfield1 = 0;
1898 p_curp->bds_set[frag_idx].tx_frag = 0;
1899 p_curp->bds_set[frag_idx].frag_len = 0;
1900 }
1901}
1902
1903
1904static void qed_ll2_tx_packet_notify(struct qed_hwfn *p_hwfn,
1905 struct qed_ll2_info *p_ll2_conn)
1906{
1907 bool b_notify = p_ll2_conn->tx_queue.cur_send_packet->notify_fw;
1908 struct qed_ll2_tx_queue *p_tx = &p_ll2_conn->tx_queue;
1909 struct qed_ll2_tx_packet *p_pkt = NULL;
1910 u16 bd_prod;
1911
1912
1913 if (p_ll2_conn->tx_queue.cur_send_frag_num !=
1914 p_ll2_conn->tx_queue.cur_send_packet->bd_used)
1915 return;
1916
1917
1918 list_add_tail(&p_ll2_conn->tx_queue.cur_send_packet->list_entry,
1919 &p_ll2_conn->tx_queue.sending_descq);
1920 p_ll2_conn->tx_queue.cur_send_packet = NULL;
1921 p_ll2_conn->tx_queue.cur_send_frag_num = 0;
1922
1923
1924 if (!b_notify)
1925 return;
1926
1927 bd_prod = qed_chain_get_prod_idx(&p_ll2_conn->tx_queue.txq_chain);
1928
1929 while (!list_empty(&p_tx->sending_descq)) {
1930 p_pkt = list_first_entry(&p_tx->sending_descq,
1931 struct qed_ll2_tx_packet, list_entry);
1932 if (!p_pkt)
1933 break;
1934
1935 list_move_tail(&p_pkt->list_entry, &p_tx->active_descq);
1936 }
1937
1938 p_tx->db_msg.spq_prod = cpu_to_le16(bd_prod);
1939
1940
1941 wmb();
1942
1943 DIRECT_REG_WR(p_tx->doorbell_addr, *((u32 *)&p_tx->db_msg));
1944
1945 DP_VERBOSE(p_hwfn,
1946 (NETIF_MSG_TX_QUEUED | QED_MSG_LL2),
1947 "LL2 [q 0x%02x cid 0x%08x type 0x%08x] Doorbelled [producer 0x%04x]\n",
1948 p_ll2_conn->queue_id,
1949 p_ll2_conn->cid,
1950 p_ll2_conn->input.conn_type, p_tx->db_msg.spq_prod);
1951}
1952
1953int qed_ll2_prepare_tx_packet(void *cxt,
1954 u8 connection_handle,
1955 struct qed_ll2_tx_pkt_info *pkt,
1956 bool notify_fw)
1957{
1958 struct qed_hwfn *p_hwfn = cxt;
1959 struct qed_ll2_tx_packet *p_curp = NULL;
1960 struct qed_ll2_info *p_ll2_conn = NULL;
1961 struct qed_ll2_tx_queue *p_tx;
1962 struct qed_chain *p_tx_chain;
1963 unsigned long flags;
1964 int rc = 0;
1965
1966 p_ll2_conn = qed_ll2_handle_sanity(p_hwfn, connection_handle);
1967 if (!p_ll2_conn)
1968 return -EINVAL;
1969 p_tx = &p_ll2_conn->tx_queue;
1970 p_tx_chain = &p_tx->txq_chain;
1971
1972 if (pkt->num_of_bds > p_ll2_conn->input.tx_max_bds_per_packet)
1973 return -EIO;
1974
1975 spin_lock_irqsave(&p_tx->lock, flags);
1976 if (p_tx->cur_send_packet) {
1977 rc = -EEXIST;
1978 goto out;
1979 }
1980
1981
1982 if (!list_empty(&p_tx->free_descq))
1983 p_curp = list_first_entry(&p_tx->free_descq,
1984 struct qed_ll2_tx_packet, list_entry);
1985 if (p_curp && qed_chain_get_elem_left(p_tx_chain) < pkt->num_of_bds)
1986 p_curp = NULL;
1987
1988 if (!p_curp) {
1989 rc = -EBUSY;
1990 goto out;
1991 }
1992
1993
1994 qed_ll2_prepare_tx_packet_set(p_hwfn, p_tx, p_curp, pkt, notify_fw);
1995
1996 qed_ll2_prepare_tx_packet_set_bd(p_hwfn, p_ll2_conn, p_curp, pkt);
1997
1998 qed_ll2_tx_packet_notify(p_hwfn, p_ll2_conn);
1999
2000out:
2001 spin_unlock_irqrestore(&p_tx->lock, flags);
2002 return rc;
2003}
2004
2005int qed_ll2_set_fragment_of_tx_packet(void *cxt,
2006 u8 connection_handle,
2007 dma_addr_t addr, u16 nbytes)
2008{
2009 struct qed_ll2_tx_packet *p_cur_send_packet = NULL;
2010 struct qed_hwfn *p_hwfn = cxt;
2011 struct qed_ll2_info *p_ll2_conn = NULL;
2012 u16 cur_send_frag_num = 0;
2013 struct core_tx_bd *p_bd;
2014 unsigned long flags;
2015
2016 p_ll2_conn = qed_ll2_handle_sanity(p_hwfn, connection_handle);
2017 if (!p_ll2_conn)
2018 return -EINVAL;
2019
2020 if (!p_ll2_conn->tx_queue.cur_send_packet)
2021 return -EINVAL;
2022
2023 p_cur_send_packet = p_ll2_conn->tx_queue.cur_send_packet;
2024 cur_send_frag_num = p_ll2_conn->tx_queue.cur_send_frag_num;
2025
2026 if (cur_send_frag_num >= p_cur_send_packet->bd_used)
2027 return -EINVAL;
2028
2029
2030 p_bd = p_cur_send_packet->bds_set[cur_send_frag_num].txq_bd;
2031 DMA_REGPAIR_LE(p_bd->addr, addr);
2032 p_bd->nbytes = cpu_to_le16(nbytes);
2033 p_cur_send_packet->bds_set[cur_send_frag_num].tx_frag = addr;
2034 p_cur_send_packet->bds_set[cur_send_frag_num].frag_len = nbytes;
2035
2036 p_ll2_conn->tx_queue.cur_send_frag_num++;
2037
2038 spin_lock_irqsave(&p_ll2_conn->tx_queue.lock, flags);
2039 qed_ll2_tx_packet_notify(p_hwfn, p_ll2_conn);
2040 spin_unlock_irqrestore(&p_ll2_conn->tx_queue.lock, flags);
2041
2042 return 0;
2043}
2044
2045int qed_ll2_terminate_connection(void *cxt, u8 connection_handle)
2046{
2047 struct qed_hwfn *p_hwfn = cxt;
2048 struct qed_ll2_info *p_ll2_conn = NULL;
2049 int rc = -EINVAL;
2050 struct qed_ptt *p_ptt;
2051
2052 p_ptt = qed_ptt_acquire(p_hwfn);
2053 if (!p_ptt)
2054 return -EAGAIN;
2055
2056 p_ll2_conn = qed_ll2_handle_sanity_lock(p_hwfn, connection_handle);
2057 if (!p_ll2_conn) {
2058 rc = -EINVAL;
2059 goto out;
2060 }
2061
2062
2063 if (QED_LL2_TX_REGISTERED(p_ll2_conn)) {
2064 p_ll2_conn->tx_queue.b_cb_registered = false;
2065 smp_wmb();
2066 rc = qed_sp_ll2_tx_queue_stop(p_hwfn, p_ll2_conn);
2067 if (rc)
2068 goto out;
2069
2070 qed_ll2_txq_flush(p_hwfn, connection_handle);
2071 qed_int_unregister_cb(p_hwfn, p_ll2_conn->tx_queue.tx_sb_index);
2072 }
2073
2074 if (QED_LL2_RX_REGISTERED(p_ll2_conn)) {
2075 p_ll2_conn->rx_queue.b_cb_registered = false;
2076 smp_wmb();
2077
2078 if (p_ll2_conn->rx_queue.ctx_based)
2079 qed_db_recovery_del(p_hwfn->cdev,
2080 p_ll2_conn->rx_queue.set_prod_addr,
2081 &p_ll2_conn->rx_queue.db_data);
2082
2083 rc = qed_sp_ll2_rx_queue_stop(p_hwfn, p_ll2_conn);
2084 if (rc)
2085 goto out;
2086
2087 qed_ll2_rxq_flush(p_hwfn, connection_handle);
2088 qed_int_unregister_cb(p_hwfn, p_ll2_conn->rx_queue.rx_sb_index);
2089 }
2090
2091 if (p_ll2_conn->input.conn_type == QED_LL2_TYPE_OOO)
2092 qed_ooo_release_all_isles(p_hwfn, p_hwfn->p_ooo_info);
2093
2094 if (p_ll2_conn->input.conn_type == QED_LL2_TYPE_FCOE) {
2095 if (!test_bit(QED_MF_UFP_SPECIFIC, &p_hwfn->cdev->mf_bits))
2096 qed_llh_remove_protocol_filter(p_hwfn->cdev, 0,
2097 QED_LLH_FILTER_ETHERTYPE,
2098 ETH_P_FCOE, 0);
2099 qed_llh_remove_protocol_filter(p_hwfn->cdev, 0,
2100 QED_LLH_FILTER_ETHERTYPE,
2101 ETH_P_FIP, 0);
2102 }
2103
2104out:
2105 qed_ptt_release(p_hwfn, p_ptt);
2106 return rc;
2107}
2108
2109static void qed_ll2_release_connection_ooo(struct qed_hwfn *p_hwfn,
2110 struct qed_ll2_info *p_ll2_conn)
2111{
2112 struct qed_ooo_buffer *p_buffer;
2113
2114 if (p_ll2_conn->input.conn_type != QED_LL2_TYPE_OOO)
2115 return;
2116
2117 qed_ooo_release_all_isles(p_hwfn, p_hwfn->p_ooo_info);
2118 while ((p_buffer = qed_ooo_get_free_buffer(p_hwfn,
2119 p_hwfn->p_ooo_info))) {
2120 dma_free_coherent(&p_hwfn->cdev->pdev->dev,
2121 p_buffer->rx_buffer_size,
2122 p_buffer->rx_buffer_virt_addr,
2123 p_buffer->rx_buffer_phys_addr);
2124 kfree(p_buffer);
2125 }
2126}
2127
2128void qed_ll2_release_connection(void *cxt, u8 connection_handle)
2129{
2130 struct qed_hwfn *p_hwfn = cxt;
2131 struct qed_ll2_info *p_ll2_conn = NULL;
2132
2133 p_ll2_conn = qed_ll2_handle_sanity(p_hwfn, connection_handle);
2134 if (!p_ll2_conn)
2135 return;
2136
2137 kfree(p_ll2_conn->tx_queue.descq_mem);
2138 qed_chain_free(p_hwfn->cdev, &p_ll2_conn->tx_queue.txq_chain);
2139
2140 kfree(p_ll2_conn->rx_queue.descq_array);
2141 qed_chain_free(p_hwfn->cdev, &p_ll2_conn->rx_queue.rxq_chain);
2142 qed_chain_free(p_hwfn->cdev, &p_ll2_conn->rx_queue.rcq_chain);
2143
2144 qed_cxt_release_cid(p_hwfn, p_ll2_conn->cid);
2145
2146 qed_ll2_release_connection_ooo(p_hwfn, p_ll2_conn);
2147
2148 mutex_lock(&p_ll2_conn->mutex);
2149 p_ll2_conn->b_active = false;
2150 mutex_unlock(&p_ll2_conn->mutex);
2151}
2152
2153int qed_ll2_alloc(struct qed_hwfn *p_hwfn)
2154{
2155 struct qed_ll2_info *p_ll2_connections;
2156 u8 i;
2157
2158
2159 p_ll2_connections = kcalloc(QED_MAX_NUM_OF_LL2_CONNECTIONS,
2160 sizeof(struct qed_ll2_info), GFP_KERNEL);
2161 if (!p_ll2_connections) {
2162 DP_NOTICE(p_hwfn, "Failed to allocate `struct qed_ll2'\n");
2163 return -ENOMEM;
2164 }
2165
2166 for (i = 0; i < QED_MAX_NUM_OF_LL2_CONNECTIONS; i++)
2167 p_ll2_connections[i].my_id = i;
2168
2169 p_hwfn->p_ll2_info = p_ll2_connections;
2170 return 0;
2171}
2172
2173void qed_ll2_setup(struct qed_hwfn *p_hwfn)
2174{
2175 int i;
2176
2177 for (i = 0; i < QED_MAX_NUM_OF_LL2_CONNECTIONS; i++)
2178 mutex_init(&p_hwfn->p_ll2_info[i].mutex);
2179}
2180
2181void qed_ll2_free(struct qed_hwfn *p_hwfn)
2182{
2183 if (!p_hwfn->p_ll2_info)
2184 return;
2185
2186 kfree(p_hwfn->p_ll2_info);
2187 p_hwfn->p_ll2_info = NULL;
2188}
2189
2190static void _qed_ll2_get_port_stats(struct qed_hwfn *p_hwfn,
2191 struct qed_ptt *p_ptt,
2192 struct qed_ll2_stats *p_stats)
2193{
2194 struct core_ll2_port_stats port_stats;
2195
2196 memset(&port_stats, 0, sizeof(port_stats));
2197 qed_memcpy_from(p_hwfn, p_ptt, &port_stats,
2198 BAR0_MAP_REG_TSDM_RAM +
2199 TSTORM_LL2_PORT_STAT_OFFSET(MFW_PORT(p_hwfn)),
2200 sizeof(port_stats));
2201
2202 p_stats->gsi_invalid_hdr += HILO_64_REGPAIR(port_stats.gsi_invalid_hdr);
2203 p_stats->gsi_invalid_pkt_length +=
2204 HILO_64_REGPAIR(port_stats.gsi_invalid_pkt_length);
2205 p_stats->gsi_unsupported_pkt_typ +=
2206 HILO_64_REGPAIR(port_stats.gsi_unsupported_pkt_typ);
2207 p_stats->gsi_crcchksm_error +=
2208 HILO_64_REGPAIR(port_stats.gsi_crcchksm_error);
2209}
2210
2211static void _qed_ll2_get_tstats(struct qed_hwfn *p_hwfn,
2212 struct qed_ptt *p_ptt,
2213 struct qed_ll2_info *p_ll2_conn,
2214 struct qed_ll2_stats *p_stats)
2215{
2216 struct core_ll2_tstorm_per_queue_stat tstats;
2217 u8 qid = p_ll2_conn->queue_id;
2218 u32 tstats_addr;
2219
2220 memset(&tstats, 0, sizeof(tstats));
2221 tstats_addr = BAR0_MAP_REG_TSDM_RAM +
2222 CORE_LL2_TSTORM_PER_QUEUE_STAT_OFFSET(qid);
2223 qed_memcpy_from(p_hwfn, p_ptt, &tstats, tstats_addr, sizeof(tstats));
2224
2225 p_stats->packet_too_big_discard +=
2226 HILO_64_REGPAIR(tstats.packet_too_big_discard);
2227 p_stats->no_buff_discard += HILO_64_REGPAIR(tstats.no_buff_discard);
2228}
2229
2230static void _qed_ll2_get_ustats(struct qed_hwfn *p_hwfn,
2231 struct qed_ptt *p_ptt,
2232 struct qed_ll2_info *p_ll2_conn,
2233 struct qed_ll2_stats *p_stats)
2234{
2235 struct core_ll2_ustorm_per_queue_stat ustats;
2236 u8 qid = p_ll2_conn->queue_id;
2237 u32 ustats_addr;
2238
2239 memset(&ustats, 0, sizeof(ustats));
2240 ustats_addr = BAR0_MAP_REG_USDM_RAM +
2241 CORE_LL2_USTORM_PER_QUEUE_STAT_OFFSET(qid);
2242 qed_memcpy_from(p_hwfn, p_ptt, &ustats, ustats_addr, sizeof(ustats));
2243
2244 p_stats->rcv_ucast_bytes += HILO_64_REGPAIR(ustats.rcv_ucast_bytes);
2245 p_stats->rcv_mcast_bytes += HILO_64_REGPAIR(ustats.rcv_mcast_bytes);
2246 p_stats->rcv_bcast_bytes += HILO_64_REGPAIR(ustats.rcv_bcast_bytes);
2247 p_stats->rcv_ucast_pkts += HILO_64_REGPAIR(ustats.rcv_ucast_pkts);
2248 p_stats->rcv_mcast_pkts += HILO_64_REGPAIR(ustats.rcv_mcast_pkts);
2249 p_stats->rcv_bcast_pkts += HILO_64_REGPAIR(ustats.rcv_bcast_pkts);
2250}
2251
2252static void _qed_ll2_get_pstats(struct qed_hwfn *p_hwfn,
2253 struct qed_ptt *p_ptt,
2254 struct qed_ll2_info *p_ll2_conn,
2255 struct qed_ll2_stats *p_stats)
2256{
2257 struct core_ll2_pstorm_per_queue_stat pstats;
2258 u8 stats_id = p_ll2_conn->tx_stats_id;
2259 u32 pstats_addr;
2260
2261 memset(&pstats, 0, sizeof(pstats));
2262 pstats_addr = BAR0_MAP_REG_PSDM_RAM +
2263 CORE_LL2_PSTORM_PER_QUEUE_STAT_OFFSET(stats_id);
2264 qed_memcpy_from(p_hwfn, p_ptt, &pstats, pstats_addr, sizeof(pstats));
2265
2266 p_stats->sent_ucast_bytes += HILO_64_REGPAIR(pstats.sent_ucast_bytes);
2267 p_stats->sent_mcast_bytes += HILO_64_REGPAIR(pstats.sent_mcast_bytes);
2268 p_stats->sent_bcast_bytes += HILO_64_REGPAIR(pstats.sent_bcast_bytes);
2269 p_stats->sent_ucast_pkts += HILO_64_REGPAIR(pstats.sent_ucast_pkts);
2270 p_stats->sent_mcast_pkts += HILO_64_REGPAIR(pstats.sent_mcast_pkts);
2271 p_stats->sent_bcast_pkts += HILO_64_REGPAIR(pstats.sent_bcast_pkts);
2272}
2273
2274static int __qed_ll2_get_stats(void *cxt, u8 connection_handle,
2275 struct qed_ll2_stats *p_stats)
2276{
2277 struct qed_hwfn *p_hwfn = cxt;
2278 struct qed_ll2_info *p_ll2_conn = NULL;
2279 struct qed_ptt *p_ptt;
2280
2281 if ((connection_handle >= QED_MAX_NUM_OF_LL2_CONNECTIONS) ||
2282 !p_hwfn->p_ll2_info)
2283 return -EINVAL;
2284
2285 p_ll2_conn = &p_hwfn->p_ll2_info[connection_handle];
2286
2287 p_ptt = qed_ptt_acquire(p_hwfn);
2288 if (!p_ptt) {
2289 DP_ERR(p_hwfn, "Failed to acquire ptt\n");
2290 return -EINVAL;
2291 }
2292
2293 if (p_ll2_conn->input.gsi_enable)
2294 _qed_ll2_get_port_stats(p_hwfn, p_ptt, p_stats);
2295
2296 _qed_ll2_get_tstats(p_hwfn, p_ptt, p_ll2_conn, p_stats);
2297
2298 _qed_ll2_get_ustats(p_hwfn, p_ptt, p_ll2_conn, p_stats);
2299
2300 if (p_ll2_conn->tx_stats_en)
2301 _qed_ll2_get_pstats(p_hwfn, p_ptt, p_ll2_conn, p_stats);
2302
2303 qed_ptt_release(p_hwfn, p_ptt);
2304
2305 return 0;
2306}
2307
2308int qed_ll2_get_stats(void *cxt,
2309 u8 connection_handle, struct qed_ll2_stats *p_stats)
2310{
2311 memset(p_stats, 0, sizeof(*p_stats));
2312 return __qed_ll2_get_stats(cxt, connection_handle, p_stats);
2313}
2314
2315static void qed_ll2b_release_rx_packet(void *cxt,
2316 u8 connection_handle,
2317 void *cookie,
2318 dma_addr_t rx_buf_addr,
2319 bool b_last_packet)
2320{
2321 struct qed_hwfn *p_hwfn = cxt;
2322
2323 qed_ll2_dealloc_buffer(p_hwfn->cdev, cookie);
2324}
2325
2326static void qed_ll2_register_cb_ops(struct qed_dev *cdev,
2327 const struct qed_ll2_cb_ops *ops,
2328 void *cookie)
2329{
2330 cdev->ll2->cbs = ops;
2331 cdev->ll2->cb_cookie = cookie;
2332}
2333
2334static struct qed_ll2_cbs ll2_cbs = {
2335 .rx_comp_cb = &qed_ll2b_complete_rx_packet,
2336 .rx_release_cb = &qed_ll2b_release_rx_packet,
2337 .tx_comp_cb = &qed_ll2b_complete_tx_packet,
2338 .tx_release_cb = &qed_ll2b_complete_tx_packet,
2339};
2340
2341static void qed_ll2_set_conn_data(struct qed_hwfn *p_hwfn,
2342 struct qed_ll2_acquire_data *data,
2343 struct qed_ll2_params *params,
2344 enum qed_ll2_conn_type conn_type,
2345 u8 *handle, bool lb)
2346{
2347 memset(data, 0, sizeof(*data));
2348
2349 data->input.conn_type = conn_type;
2350 data->input.mtu = params->mtu;
2351 data->input.rx_num_desc = QED_LL2_RX_SIZE;
2352 data->input.rx_drop_ttl0_flg = params->drop_ttl0_packets;
2353 data->input.rx_vlan_removal_en = params->rx_vlan_stripping;
2354 data->input.tx_num_desc = QED_LL2_TX_SIZE;
2355 data->p_connection_handle = handle;
2356 data->cbs = &ll2_cbs;
2357 ll2_cbs.cookie = p_hwfn;
2358
2359 if (lb) {
2360 data->input.tx_tc = PKT_LB_TC;
2361 data->input.tx_dest = QED_LL2_TX_DEST_LB;
2362 } else {
2363 data->input.tx_tc = 0;
2364 data->input.tx_dest = QED_LL2_TX_DEST_NW;
2365 }
2366}
2367
2368static int qed_ll2_start_ooo(struct qed_hwfn *p_hwfn,
2369 struct qed_ll2_params *params)
2370{
2371 u8 *handle = &p_hwfn->pf_params.iscsi_pf_params.ll2_ooo_queue_id;
2372 struct qed_ll2_acquire_data data;
2373 int rc;
2374
2375 qed_ll2_set_conn_data(p_hwfn, &data, params,
2376 QED_LL2_TYPE_OOO, handle, true);
2377
2378 rc = qed_ll2_acquire_connection(p_hwfn, &data);
2379 if (rc) {
2380 DP_INFO(p_hwfn, "Failed to acquire LL2 OOO connection\n");
2381 goto out;
2382 }
2383
2384 rc = qed_ll2_establish_connection(p_hwfn, *handle);
2385 if (rc) {
2386 DP_INFO(p_hwfn, "Failed to establish LL2 OOO connection\n");
2387 goto fail;
2388 }
2389
2390 return 0;
2391
2392fail:
2393 qed_ll2_release_connection(p_hwfn, *handle);
2394out:
2395 *handle = QED_LL2_UNUSED_HANDLE;
2396 return rc;
2397}
2398
2399static bool qed_ll2_is_storage_eng1(struct qed_dev *cdev)
2400{
2401 return (QED_IS_FCOE_PERSONALITY(QED_LEADING_HWFN(cdev)) ||
2402 QED_IS_ISCSI_PERSONALITY(QED_LEADING_HWFN(cdev)) ||
2403 QED_IS_NVMETCP_PERSONALITY(QED_LEADING_HWFN(cdev))) &&
2404 (QED_AFFIN_HWFN(cdev) != QED_LEADING_HWFN(cdev));
2405}
2406
2407static int __qed_ll2_stop(struct qed_hwfn *p_hwfn)
2408{
2409 struct qed_dev *cdev = p_hwfn->cdev;
2410 int rc;
2411
2412 rc = qed_ll2_terminate_connection(p_hwfn, cdev->ll2->handle);
2413 if (rc)
2414 DP_INFO(cdev, "Failed to terminate LL2 connection\n");
2415
2416 qed_ll2_release_connection(p_hwfn, cdev->ll2->handle);
2417
2418 return rc;
2419}
2420
2421static int qed_ll2_stop(struct qed_dev *cdev)
2422{
2423 bool b_is_storage_eng1 = qed_ll2_is_storage_eng1(cdev);
2424 struct qed_hwfn *p_hwfn = QED_AFFIN_HWFN(cdev);
2425 int rc = 0, rc2 = 0;
2426
2427 if (cdev->ll2->handle == QED_LL2_UNUSED_HANDLE)
2428 return 0;
2429 if (!QED_IS_NVMETCP_PERSONALITY(p_hwfn))
2430 qed_llh_remove_mac_filter(cdev, 0, cdev->ll2_mac_address);
2431
2432 qed_llh_remove_mac_filter(cdev, 0, cdev->ll2_mac_address);
2433 eth_zero_addr(cdev->ll2_mac_address);
2434
2435 if (QED_IS_ISCSI_PERSONALITY(p_hwfn) || QED_IS_NVMETCP_PERSONALITY(p_hwfn))
2436 qed_ll2_stop_ooo(p_hwfn);
2437
2438
2439 if (b_is_storage_eng1) {
2440 rc2 = __qed_ll2_stop(QED_LEADING_HWFN(cdev));
2441 if (rc2)
2442 DP_NOTICE(QED_LEADING_HWFN(cdev),
2443 "Failed to stop LL2 on engine 0\n");
2444 }
2445
2446 rc = __qed_ll2_stop(p_hwfn);
2447 if (rc)
2448 DP_NOTICE(p_hwfn, "Failed to stop LL2\n");
2449
2450 qed_ll2_kill_buffers(cdev);
2451
2452 cdev->ll2->handle = QED_LL2_UNUSED_HANDLE;
2453
2454 return rc | rc2;
2455}
2456
2457static int __qed_ll2_start(struct qed_hwfn *p_hwfn,
2458 struct qed_ll2_params *params)
2459{
2460 struct qed_ll2_buffer *buffer, *tmp_buffer;
2461 struct qed_dev *cdev = p_hwfn->cdev;
2462 enum qed_ll2_conn_type conn_type;
2463 struct qed_ll2_acquire_data data;
2464 int rc, rx_cnt;
2465
2466 switch (p_hwfn->hw_info.personality) {
2467 case QED_PCI_FCOE:
2468 conn_type = QED_LL2_TYPE_FCOE;
2469 break;
2470 case QED_PCI_ISCSI:
2471 case QED_PCI_NVMETCP:
2472 conn_type = QED_LL2_TYPE_TCP_ULP;
2473 break;
2474 case QED_PCI_ETH_ROCE:
2475 conn_type = QED_LL2_TYPE_ROCE;
2476 break;
2477 default:
2478
2479 conn_type = QED_LL2_TYPE_TEST;
2480 }
2481
2482 qed_ll2_set_conn_data(p_hwfn, &data, params, conn_type,
2483 &cdev->ll2->handle, false);
2484
2485 rc = qed_ll2_acquire_connection(p_hwfn, &data);
2486 if (rc) {
2487 DP_INFO(p_hwfn, "Failed to acquire LL2 connection\n");
2488 return rc;
2489 }
2490
2491 rc = qed_ll2_establish_connection(p_hwfn, cdev->ll2->handle);
2492 if (rc) {
2493 DP_INFO(p_hwfn, "Failed to establish LL2 connection\n");
2494 goto release_conn;
2495 }
2496
2497
2498 spin_lock_bh(&cdev->ll2->lock);
2499 rx_cnt = cdev->ll2->rx_cnt;
2500 list_for_each_entry_safe(buffer, tmp_buffer, &cdev->ll2->list, list) {
2501 rc = qed_ll2_post_rx_buffer(p_hwfn,
2502 cdev->ll2->handle,
2503 buffer->phys_addr, 0, buffer, 1);
2504 if (rc) {
2505 DP_INFO(p_hwfn,
2506 "Failed to post an Rx buffer; Deleting it\n");
2507 dma_unmap_single(&cdev->pdev->dev, buffer->phys_addr,
2508 cdev->ll2->rx_size, DMA_FROM_DEVICE);
2509 kfree(buffer->data);
2510 list_del(&buffer->list);
2511 kfree(buffer);
2512 } else {
2513 rx_cnt++;
2514 }
2515 }
2516 spin_unlock_bh(&cdev->ll2->lock);
2517
2518 if (rx_cnt == cdev->ll2->rx_cnt) {
2519 DP_NOTICE(p_hwfn, "Failed passing even a single Rx buffer\n");
2520 goto terminate_conn;
2521 }
2522 cdev->ll2->rx_cnt = rx_cnt;
2523
2524 return 0;
2525
2526terminate_conn:
2527 qed_ll2_terminate_connection(p_hwfn, cdev->ll2->handle);
2528release_conn:
2529 qed_ll2_release_connection(p_hwfn, cdev->ll2->handle);
2530 return rc;
2531}
2532
2533static int qed_ll2_start(struct qed_dev *cdev, struct qed_ll2_params *params)
2534{
2535 bool b_is_storage_eng1 = qed_ll2_is_storage_eng1(cdev);
2536 struct qed_hwfn *p_hwfn = QED_AFFIN_HWFN(cdev);
2537 struct qed_ll2_buffer *buffer;
2538 int rx_num_desc, i, rc;
2539
2540 if (!is_valid_ether_addr(params->ll2_mac_address)) {
2541 DP_NOTICE(cdev, "Invalid Ethernet address\n");
2542 return -EINVAL;
2543 }
2544
2545 WARN_ON(!cdev->ll2->cbs);
2546
2547
2548 INIT_LIST_HEAD(&cdev->ll2->list);
2549 spin_lock_init(&cdev->ll2->lock);
2550
2551 cdev->ll2->rx_size = NET_SKB_PAD + ETH_HLEN +
2552 L1_CACHE_BYTES + params->mtu;
2553
2554
2555
2556
2557
2558 rx_num_desc = QED_LL2_RX_SIZE * (b_is_storage_eng1 ? 2 : 1);
2559 DP_INFO(cdev, "Allocating %d LL2 buffers of size %08x bytes\n",
2560 rx_num_desc, cdev->ll2->rx_size);
2561 for (i = 0; i < rx_num_desc; i++) {
2562 buffer = kzalloc(sizeof(*buffer), GFP_KERNEL);
2563 if (!buffer) {
2564 DP_INFO(cdev, "Failed to allocate LL2 buffers\n");
2565 rc = -ENOMEM;
2566 goto err0;
2567 }
2568
2569 rc = qed_ll2_alloc_buffer(cdev, (u8 **)&buffer->data,
2570 &buffer->phys_addr);
2571 if (rc) {
2572 kfree(buffer);
2573 goto err0;
2574 }
2575
2576 list_add_tail(&buffer->list, &cdev->ll2->list);
2577 }
2578
2579 rc = __qed_ll2_start(p_hwfn, params);
2580 if (rc) {
2581 DP_NOTICE(cdev, "Failed to start LL2\n");
2582 goto err0;
2583 }
2584
2585
2586
2587
2588 if (b_is_storage_eng1) {
2589 rc = __qed_ll2_start(QED_LEADING_HWFN(cdev), params);
2590 if (rc) {
2591 DP_NOTICE(QED_LEADING_HWFN(cdev),
2592 "Failed to start LL2 on engine 0\n");
2593 goto err1;
2594 }
2595 }
2596
2597 if (QED_IS_ISCSI_PERSONALITY(p_hwfn) || QED_IS_NVMETCP_PERSONALITY(p_hwfn)) {
2598 DP_VERBOSE(cdev, QED_MSG_STORAGE, "Starting OOO LL2 queue\n");
2599 rc = qed_ll2_start_ooo(p_hwfn, params);
2600 if (rc) {
2601 DP_NOTICE(cdev, "Failed to start OOO LL2\n");
2602 goto err2;
2603 }
2604 }
2605
2606 if (!QED_IS_NVMETCP_PERSONALITY(p_hwfn)) {
2607 rc = qed_llh_add_mac_filter(cdev, 0, params->ll2_mac_address);
2608 if (rc) {
2609 DP_NOTICE(cdev, "Failed to add an LLH filter\n");
2610 goto err3;
2611 }
2612
2613 }
2614
2615 ether_addr_copy(cdev->ll2_mac_address, params->ll2_mac_address);
2616
2617 return 0;
2618
2619err3:
2620 if (QED_IS_ISCSI_PERSONALITY(p_hwfn) || QED_IS_NVMETCP_PERSONALITY(p_hwfn))
2621 qed_ll2_stop_ooo(p_hwfn);
2622err2:
2623 if (b_is_storage_eng1)
2624 __qed_ll2_stop(QED_LEADING_HWFN(cdev));
2625err1:
2626 __qed_ll2_stop(p_hwfn);
2627err0:
2628 qed_ll2_kill_buffers(cdev);
2629 cdev->ll2->handle = QED_LL2_UNUSED_HANDLE;
2630 return rc;
2631}
2632
2633static int qed_ll2_start_xmit(struct qed_dev *cdev, struct sk_buff *skb,
2634 unsigned long xmit_flags)
2635{
2636 struct qed_hwfn *p_hwfn = QED_AFFIN_HWFN(cdev);
2637 struct qed_ll2_tx_pkt_info pkt;
2638 const skb_frag_t *frag;
2639 u8 flags = 0, nr_frags;
2640 int rc = -EINVAL, i;
2641 dma_addr_t mapping;
2642 u16 vlan = 0;
2643
2644 if (unlikely(skb->ip_summed != CHECKSUM_NONE)) {
2645 DP_INFO(cdev, "Cannot transmit a checksummed packet\n");
2646 return -EINVAL;
2647 }
2648
2649
2650
2651
2652 nr_frags = skb_shinfo(skb)->nr_frags;
2653
2654 if (1 + nr_frags > CORE_LL2_TX_MAX_BDS_PER_PACKET) {
2655 DP_ERR(cdev, "Cannot transmit a packet with %d fragments\n",
2656 1 + nr_frags);
2657 return -EINVAL;
2658 }
2659
2660 mapping = dma_map_single(&cdev->pdev->dev, skb->data,
2661 skb->len, DMA_TO_DEVICE);
2662 if (unlikely(dma_mapping_error(&cdev->pdev->dev, mapping))) {
2663 DP_NOTICE(cdev, "SKB mapping failed\n");
2664 return -EINVAL;
2665 }
2666
2667
2668 if (!((vlan_get_protocol(skb) == htons(ETH_P_IPV6)) &&
2669 ipv6_hdr(skb)->nexthdr == NEXTHDR_IPV6))
2670 flags |= BIT(CORE_TX_BD_DATA_IP_CSUM_SHIFT);
2671
2672 if (skb_vlan_tag_present(skb)) {
2673 vlan = skb_vlan_tag_get(skb);
2674 flags |= BIT(CORE_TX_BD_DATA_VLAN_INSERTION_SHIFT);
2675 }
2676
2677 memset(&pkt, 0, sizeof(pkt));
2678 pkt.num_of_bds = 1 + nr_frags;
2679 pkt.vlan = vlan;
2680 pkt.bd_flags = flags;
2681 pkt.tx_dest = QED_LL2_TX_DEST_NW;
2682 pkt.first_frag = mapping;
2683 pkt.first_frag_len = skb->len;
2684 pkt.cookie = skb;
2685 if (test_bit(QED_MF_UFP_SPECIFIC, &cdev->mf_bits) &&
2686 test_bit(QED_LL2_XMIT_FLAGS_FIP_DISCOVERY, &xmit_flags))
2687 pkt.remove_stag = true;
2688
2689
2690
2691
2692
2693
2694 rc = qed_ll2_prepare_tx_packet(p_hwfn, cdev->ll2->handle,
2695 &pkt, 1);
2696 if (rc)
2697 goto err;
2698
2699 for (i = 0; i < nr_frags; i++) {
2700 frag = &skb_shinfo(skb)->frags[i];
2701
2702 mapping = skb_frag_dma_map(&cdev->pdev->dev, frag, 0,
2703 skb_frag_size(frag), DMA_TO_DEVICE);
2704
2705 if (unlikely(dma_mapping_error(&cdev->pdev->dev, mapping))) {
2706 DP_NOTICE(cdev,
2707 "Unable to map frag - dropping packet\n");
2708 rc = -ENOMEM;
2709 goto err;
2710 }
2711
2712 rc = qed_ll2_set_fragment_of_tx_packet(p_hwfn,
2713 cdev->ll2->handle,
2714 mapping,
2715 skb_frag_size(frag));
2716
2717
2718
2719
2720 if (rc)
2721 goto err2;
2722 }
2723
2724 return 0;
2725
2726err:
2727 dma_unmap_single(&cdev->pdev->dev, mapping, skb->len, DMA_TO_DEVICE);
2728err2:
2729 return rc;
2730}
2731
2732static int qed_ll2_stats(struct qed_dev *cdev, struct qed_ll2_stats *stats)
2733{
2734 bool b_is_storage_eng1 = qed_ll2_is_storage_eng1(cdev);
2735 struct qed_hwfn *p_hwfn = QED_AFFIN_HWFN(cdev);
2736 int rc;
2737
2738 if (!cdev->ll2)
2739 return -EINVAL;
2740
2741 rc = qed_ll2_get_stats(p_hwfn, cdev->ll2->handle, stats);
2742 if (rc) {
2743 DP_NOTICE(p_hwfn, "Failed to get LL2 stats\n");
2744 return rc;
2745 }
2746
2747
2748 if (b_is_storage_eng1) {
2749 rc = __qed_ll2_get_stats(QED_LEADING_HWFN(cdev),
2750 cdev->ll2->handle, stats);
2751 if (rc) {
2752 DP_NOTICE(QED_LEADING_HWFN(cdev),
2753 "Failed to get LL2 stats on engine 0\n");
2754 return rc;
2755 }
2756 }
2757
2758 return 0;
2759}
2760
2761const struct qed_ll2_ops qed_ll2_ops_pass = {
2762 .start = &qed_ll2_start,
2763 .stop = &qed_ll2_stop,
2764 .start_xmit = &qed_ll2_start_xmit,
2765 .register_cb_ops = &qed_ll2_register_cb_ops,
2766 .get_stats = &qed_ll2_stats,
2767};
2768
2769int qed_ll2_alloc_if(struct qed_dev *cdev)
2770{
2771 cdev->ll2 = kzalloc(sizeof(*cdev->ll2), GFP_KERNEL);
2772 return cdev->ll2 ? 0 : -ENOMEM;
2773}
2774
2775void qed_ll2_dealloc_if(struct qed_dev *cdev)
2776{
2777 kfree(cdev->ll2);
2778 cdev->ll2 = NULL;
2779}
2780