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Linux 4.19.133
[linux/fpc-iii.git] / drivers / net / ethernet / qlogic / qed / qed_roce.c
blobe49fada854108718bf1dc5ea45fda2d4d264ded2
1 /* QLogic qed NIC Driver
2 * Copyright (c) 2015-2017 QLogic Corporation
3 *
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:
9 *
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
12 * conditions are met:
13 *
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
16 * disclaimer.
17 *
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.
22 *
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
30 * SOFTWARE.
31 */
32 #include <linux/types.h>
33 #include <asm/byteorder.h>
34 #include <linux/bitops.h>
35 #include <linux/delay.h>
36 #include <linux/dma-mapping.h>
37 #include <linux/errno.h>
38 #include <linux/io.h>
39 #include <linux/kernel.h>
40 #include <linux/list.h>
41 #include <linux/module.h>
42 #include <linux/mutex.h>
43 #include <linux/pci.h>
44 #include <linux/slab.h>
45 #include <linux/spinlock.h>
46 #include <linux/string.h>
47 #include <linux/if_vlan.h>
48 #include "qed.h"
49 #include "qed_cxt.h"
50 #include "qed_dcbx.h"
51 #include "qed_hsi.h"
52 #include "qed_hw.h"
53 #include "qed_init_ops.h"
54 #include "qed_int.h"
55 #include "qed_ll2.h"
56 #include "qed_mcp.h"
57 #include "qed_reg_addr.h"
58 #include <linux/qed/qed_rdma_if.h>
59 #include "qed_rdma.h"
60 #include "qed_roce.h"
61 #include "qed_sp.h"
62
63 static void qed_roce_free_real_icid(struct qed_hwfn *p_hwfn, u16 icid);
64
65 static int
66 qed_roce_async_event(struct qed_hwfn *p_hwfn,
67 u8 fw_event_code,
68 u16 echo, union event_ring_data *data, u8 fw_return_code)
69 {
70 struct qed_rdma_events events = p_hwfn->p_rdma_info->events;
71
72 if (fw_event_code == ROCE_ASYNC_EVENT_DESTROY_QP_DONE) {
73 u16 icid =
74 (u16)le32_to_cpu(data->rdma_data.rdma_destroy_qp_data.cid);
75
76 /* icid release in this async event can occur only if the icid
77 * was offloaded to the FW. In case it wasn't offloaded this is
78 * handled in qed_roce_sp_destroy_qp.
79 */
80 qed_roce_free_real_icid(p_hwfn, icid);
81 } else {
82 if (fw_event_code == ROCE_ASYNC_EVENT_SRQ_EMPTY ||
83 fw_event_code == ROCE_ASYNC_EVENT_SRQ_LIMIT) {
84 u16 srq_id = (u16)data->rdma_data.async_handle.lo;
85
86 events.affiliated_event(events.context, fw_event_code,
87 &srq_id);
88 } else {
89 union rdma_eqe_data rdata = data->rdma_data;
90
91 events.affiliated_event(events.context, fw_event_code,
92 (void *)&rdata.async_handle);
93 }
94 }
95
96 return 0;
97 }
98
99 void qed_roce_stop(struct qed_hwfn *p_hwfn)
100 {
101 struct qed_bmap *rcid_map = &p_hwfn->p_rdma_info->real_cid_map;
102 int wait_count = 0;
103
104 /* when destroying a_RoCE QP the control is returned to the user after
105 * the synchronous part. The asynchronous part may take a little longer.
106 * We delay for a short while if an async destroy QP is still expected.
107 * Beyond the added delay we clear the bitmap anyway.
108 */
109 while (bitmap_weight(rcid_map->bitmap, rcid_map->max_count)) {
110 msleep(100);
111 if (wait_count++ > 20) {
112 DP_NOTICE(p_hwfn, "cid bitmap wait timed out\n");
113 break;
114 }
115 }
116 qed_spq_unregister_async_cb(p_hwfn, PROTOCOLID_ROCE);
117 }
118
119 static void qed_rdma_copy_gids(struct qed_rdma_qp *qp, __le32 *src_gid,
120 __le32 *dst_gid)
121 {
122 u32 i;
123
124 if (qp->roce_mode == ROCE_V2_IPV4) {
125 /* The IPv4 addresses shall be aligned to the highest word.
126 * The lower words must be zero.
127 */
128 memset(src_gid, 0, sizeof(union qed_gid));
129 memset(dst_gid, 0, sizeof(union qed_gid));
130 src_gid[3] = cpu_to_le32(qp->sgid.ipv4_addr);
131 dst_gid[3] = cpu_to_le32(qp->dgid.ipv4_addr);
132 } else {
133 /* GIDs and IPv6 addresses coincide in location and size */
134 for (i = 0; i < ARRAY_SIZE(qp->sgid.dwords); i++) {
135 src_gid[i] = cpu_to_le32(qp->sgid.dwords[i]);
136 dst_gid[i] = cpu_to_le32(qp->dgid.dwords[i]);
137 }
138 }
139 }
140
141 static enum roce_flavor qed_roce_mode_to_flavor(enum roce_mode roce_mode)
142 {
143 switch (roce_mode) {
144 case ROCE_V1:
145 return PLAIN_ROCE;
146 case ROCE_V2_IPV4:
147 return RROCE_IPV4;
148 case ROCE_V2_IPV6:
149 return RROCE_IPV6;
150 default:
151 return MAX_ROCE_FLAVOR;
152 }
153 }
154
155 static void qed_roce_free_cid_pair(struct qed_hwfn *p_hwfn, u16 cid)
156 {
157 spin_lock_bh(&p_hwfn->p_rdma_info->lock);
158 qed_bmap_release_id(p_hwfn, &p_hwfn->p_rdma_info->cid_map, cid);
159 qed_bmap_release_id(p_hwfn, &p_hwfn->p_rdma_info->cid_map, cid + 1);
160 spin_unlock_bh(&p_hwfn->p_rdma_info->lock);
161 }
162
163 int qed_roce_alloc_cid(struct qed_hwfn *p_hwfn, u16 *cid)
164 {
165 struct qed_rdma_info *p_rdma_info = p_hwfn->p_rdma_info;
166 u32 responder_icid;
167 u32 requester_icid;
168 int rc;
169
170 spin_lock_bh(&p_hwfn->p_rdma_info->lock);
171 rc = qed_rdma_bmap_alloc_id(p_hwfn, &p_rdma_info->cid_map,
172 &responder_icid);
173 if (rc) {
174 spin_unlock_bh(&p_rdma_info->lock);
175 return rc;
176 }
177
178 rc = qed_rdma_bmap_alloc_id(p_hwfn, &p_rdma_info->cid_map,
179 &requester_icid);
180
181 spin_unlock_bh(&p_rdma_info->lock);
182 if (rc)
183 goto err;
184
185 /* the two icid's should be adjacent */
186 if ((requester_icid - responder_icid) != 1) {
187 DP_NOTICE(p_hwfn, "Failed to allocate two adjacent qp's'\n");
188 rc = -EINVAL;
189 goto err;
190 }
191
192 responder_icid += qed_cxt_get_proto_cid_start(p_hwfn,
193 p_rdma_info->proto);
194 requester_icid += qed_cxt_get_proto_cid_start(p_hwfn,
195 p_rdma_info->proto);
196
197 /* If these icids require a new ILT line allocate DMA-able context for
198 * an ILT page
199 */
200 rc = qed_cxt_dynamic_ilt_alloc(p_hwfn, QED_ELEM_CXT, responder_icid);
201 if (rc)
202 goto err;
203
204 rc = qed_cxt_dynamic_ilt_alloc(p_hwfn, QED_ELEM_CXT, requester_icid);
205 if (rc)
206 goto err;
207
208 *cid = (u16)responder_icid;
209 return rc;
210
211 err:
212 spin_lock_bh(&p_rdma_info->lock);
213 qed_bmap_release_id(p_hwfn, &p_rdma_info->cid_map, responder_icid);
214 qed_bmap_release_id(p_hwfn, &p_rdma_info->cid_map, requester_icid);
215
216 spin_unlock_bh(&p_rdma_info->lock);
217 DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
218 "Allocate CID - failed, rc = %d\n", rc);
219 return rc;
220 }
221
222 static void qed_roce_set_real_cid(struct qed_hwfn *p_hwfn, u32 cid)
223 {
224 spin_lock_bh(&p_hwfn->p_rdma_info->lock);
225 qed_bmap_set_id(p_hwfn, &p_hwfn->p_rdma_info->real_cid_map, cid);
226 spin_unlock_bh(&p_hwfn->p_rdma_info->lock);
227 }
228
229 static u8 qed_roce_get_qp_tc(struct qed_hwfn *p_hwfn, struct qed_rdma_qp *qp)
230 {
231 u8 pri, tc = 0;
232
233 if (qp->vlan_id) {
234 pri = (qp->vlan_id & VLAN_PRIO_MASK) >> VLAN_PRIO_SHIFT;
235 tc = qed_dcbx_get_priority_tc(p_hwfn, pri);
236 }
237
238 DP_VERBOSE(p_hwfn, QED_MSG_SP,
239 "qp icid %u tc: %u (vlan priority %s)\n",
240 qp->icid, tc, qp->vlan_id ? "enabled" : "disabled");
241
242 return tc;
243 }
244
245 static int qed_roce_sp_create_responder(struct qed_hwfn *p_hwfn,
246 struct qed_rdma_qp *qp)
247 {
248 struct roce_create_qp_resp_ramrod_data *p_ramrod;
249 u16 regular_latency_queue, low_latency_queue;
250 struct qed_sp_init_data init_data;
251 enum roce_flavor roce_flavor;
252 struct qed_spq_entry *p_ent;
253 enum protocol_type proto;
254 int rc;
255 u8 tc;
256
257 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "icid = %08x\n", qp->icid);
258
259 /* Allocate DMA-able memory for IRQ */
260 qp->irq_num_pages = 1;
261 qp->irq = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev,
262 RDMA_RING_PAGE_SIZE,
263 &qp->irq_phys_addr, GFP_KERNEL);
264 if (!qp->irq) {
265 rc = -ENOMEM;
266 DP_NOTICE(p_hwfn,
267 "qed create responder failed: cannot allocate memory (irq). rc = %d\n",
268 rc);
269 return rc;
270 }
271
272 /* Get SPQ entry */
273 memset(&init_data, 0, sizeof(init_data));
274 init_data.cid = qp->icid;
275 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
276 init_data.comp_mode = QED_SPQ_MODE_EBLOCK;
277
278 rc = qed_sp_init_request(p_hwfn, &p_ent, ROCE_RAMROD_CREATE_QP,
279 PROTOCOLID_ROCE, &init_data);
280 if (rc)
281 goto err;
282
283 p_ramrod = &p_ent->ramrod.roce_create_qp_resp;
284
285 p_ramrod->flags = 0;
286
287 roce_flavor = qed_roce_mode_to_flavor(qp->roce_mode);
288 SET_FIELD(p_ramrod->flags,
289 ROCE_CREATE_QP_RESP_RAMROD_DATA_ROCE_FLAVOR, roce_flavor);
290
291 SET_FIELD(p_ramrod->flags,
292 ROCE_CREATE_QP_RESP_RAMROD_DATA_RDMA_RD_EN,
293 qp->incoming_rdma_read_en);
294
295 SET_FIELD(p_ramrod->flags,
296 ROCE_CREATE_QP_RESP_RAMROD_DATA_RDMA_WR_EN,
297 qp->incoming_rdma_write_en);
298
299 SET_FIELD(p_ramrod->flags,
300 ROCE_CREATE_QP_RESP_RAMROD_DATA_ATOMIC_EN,
301 qp->incoming_atomic_en);
302
303 SET_FIELD(p_ramrod->flags,
304 ROCE_CREATE_QP_RESP_RAMROD_DATA_E2E_FLOW_CONTROL_EN,
305 qp->e2e_flow_control_en);
306
307 SET_FIELD(p_ramrod->flags,
308 ROCE_CREATE_QP_RESP_RAMROD_DATA_SRQ_FLG, qp->use_srq);
309
310 SET_FIELD(p_ramrod->flags,
311 ROCE_CREATE_QP_RESP_RAMROD_DATA_RESERVED_KEY_EN,
312 qp->fmr_and_reserved_lkey);
313
314 SET_FIELD(p_ramrod->flags,
315 ROCE_CREATE_QP_RESP_RAMROD_DATA_MIN_RNR_NAK_TIMER,
316 qp->min_rnr_nak_timer);
317
318 p_ramrod->max_ird = qp->max_rd_atomic_resp;
319 p_ramrod->traffic_class = qp->traffic_class_tos;
320 p_ramrod->hop_limit = qp->hop_limit_ttl;
321 p_ramrod->irq_num_pages = qp->irq_num_pages;
322 p_ramrod->p_key = cpu_to_le16(qp->pkey);
323 p_ramrod->flow_label = cpu_to_le32(qp->flow_label);
324 p_ramrod->dst_qp_id = cpu_to_le32(qp->dest_qp);
325 p_ramrod->mtu = cpu_to_le16(qp->mtu);
326 p_ramrod->initial_psn = cpu_to_le32(qp->rq_psn);
327 p_ramrod->pd = cpu_to_le16(qp->pd);
328 p_ramrod->rq_num_pages = cpu_to_le16(qp->rq_num_pages);
329 DMA_REGPAIR_LE(p_ramrod->rq_pbl_addr, qp->rq_pbl_ptr);
330 DMA_REGPAIR_LE(p_ramrod->irq_pbl_addr, qp->irq_phys_addr);
331 qed_rdma_copy_gids(qp, p_ramrod->src_gid, p_ramrod->dst_gid);
332 p_ramrod->qp_handle_for_async.hi = cpu_to_le32(qp->qp_handle_async.hi);
333 p_ramrod->qp_handle_for_async.lo = cpu_to_le32(qp->qp_handle_async.lo);
334 p_ramrod->qp_handle_for_cqe.hi = cpu_to_le32(qp->qp_handle.hi);
335 p_ramrod->qp_handle_for_cqe.lo = cpu_to_le32(qp->qp_handle.lo);
336 p_ramrod->cq_cid = cpu_to_le32((p_hwfn->hw_info.opaque_fid << 16) |
337 qp->rq_cq_id);
338
339 tc = qed_roce_get_qp_tc(p_hwfn, qp);
340 regular_latency_queue = qed_get_cm_pq_idx_ofld_mtc(p_hwfn, tc);
341 low_latency_queue = qed_get_cm_pq_idx_llt_mtc(p_hwfn, tc);
342 DP_VERBOSE(p_hwfn, QED_MSG_SP,
343 "qp icid %u pqs: regular_latency %u low_latency %u\n",
344 qp->icid, regular_latency_queue - CM_TX_PQ_BASE,
345 low_latency_queue - CM_TX_PQ_BASE);
346 p_ramrod->regular_latency_phy_queue =
347 cpu_to_le16(regular_latency_queue);
348 p_ramrod->low_latency_phy_queue =
349 cpu_to_le16(low_latency_queue);
350
351 p_ramrod->dpi = cpu_to_le16(qp->dpi);
352
353 qed_rdma_set_fw_mac(p_ramrod->remote_mac_addr, qp->remote_mac_addr);
354 qed_rdma_set_fw_mac(p_ramrod->local_mac_addr, qp->local_mac_addr);
355
356 p_ramrod->udp_src_port = qp->udp_src_port;
357 p_ramrod->vlan_id = cpu_to_le16(qp->vlan_id);
358 p_ramrod->srq_id.srq_idx = cpu_to_le16(qp->srq_id);
359 p_ramrod->srq_id.opaque_fid = cpu_to_le16(p_hwfn->hw_info.opaque_fid);
360
361 p_ramrod->stats_counter_id = RESC_START(p_hwfn, QED_RDMA_STATS_QUEUE) +
362 qp->stats_queue;
363
364 rc = qed_spq_post(p_hwfn, p_ent, NULL);
365 if (rc)
366 goto err;
367
368 qp->resp_offloaded = true;
369 qp->cq_prod = 0;
370
371 proto = p_hwfn->p_rdma_info->proto;
372 qed_roce_set_real_cid(p_hwfn, qp->icid -
373 qed_cxt_get_proto_cid_start(p_hwfn, proto));
374
375 return rc;
376
377 err:
378 DP_NOTICE(p_hwfn, "create responder - failed, rc = %d\n", rc);
379 dma_free_coherent(&p_hwfn->cdev->pdev->dev,
380 qp->irq_num_pages * RDMA_RING_PAGE_SIZE,
381 qp->irq, qp->irq_phys_addr);
382
383 return rc;
384 }
385
386 static int qed_roce_sp_create_requester(struct qed_hwfn *p_hwfn,
387 struct qed_rdma_qp *qp)
388 {
389 struct roce_create_qp_req_ramrod_data *p_ramrod;
390 u16 regular_latency_queue, low_latency_queue;
391 struct qed_sp_init_data init_data;
392 enum roce_flavor roce_flavor;
393 struct qed_spq_entry *p_ent;
394 enum protocol_type proto;
395 int rc;
396 u8 tc;
397
398 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "icid = %08x\n", qp->icid);
399
400 /* Allocate DMA-able memory for ORQ */
401 qp->orq_num_pages = 1;
402 qp->orq = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev,
403 RDMA_RING_PAGE_SIZE,
404 &qp->orq_phys_addr, GFP_KERNEL);
405 if (!qp->orq) {
406 rc = -ENOMEM;
407 DP_NOTICE(p_hwfn,
408 "qed create requester failed: cannot allocate memory (orq). rc = %d\n",
409 rc);
410 return rc;
411 }
412
413 /* Get SPQ entry */
414 memset(&init_data, 0, sizeof(init_data));
415 init_data.cid = qp->icid + 1;
416 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
417 init_data.comp_mode = QED_SPQ_MODE_EBLOCK;
418
419 rc = qed_sp_init_request(p_hwfn, &p_ent,
420 ROCE_RAMROD_CREATE_QP,
421 PROTOCOLID_ROCE, &init_data);
422 if (rc)
423 goto err;
424
425 p_ramrod = &p_ent->ramrod.roce_create_qp_req;
426
427 p_ramrod->flags = 0;
428
429 roce_flavor = qed_roce_mode_to_flavor(qp->roce_mode);
430 SET_FIELD(p_ramrod->flags,
431 ROCE_CREATE_QP_REQ_RAMROD_DATA_ROCE_FLAVOR, roce_flavor);
432
433 SET_FIELD(p_ramrod->flags,
434 ROCE_CREATE_QP_REQ_RAMROD_DATA_FMR_AND_RESERVED_EN,
435 qp->fmr_and_reserved_lkey);
436
437 SET_FIELD(p_ramrod->flags,
438 ROCE_CREATE_QP_REQ_RAMROD_DATA_SIGNALED_COMP, qp->signal_all);
439
440 SET_FIELD(p_ramrod->flags,
441 ROCE_CREATE_QP_REQ_RAMROD_DATA_ERR_RETRY_CNT, qp->retry_cnt);
442
443 SET_FIELD(p_ramrod->flags,
444 ROCE_CREATE_QP_REQ_RAMROD_DATA_RNR_NAK_CNT,
445 qp->rnr_retry_cnt);
446
447 p_ramrod->max_ord = qp->max_rd_atomic_req;
448 p_ramrod->traffic_class = qp->traffic_class_tos;
449 p_ramrod->hop_limit = qp->hop_limit_ttl;
450 p_ramrod->orq_num_pages = qp->orq_num_pages;
451 p_ramrod->p_key = cpu_to_le16(qp->pkey);
452 p_ramrod->flow_label = cpu_to_le32(qp->flow_label);
453 p_ramrod->dst_qp_id = cpu_to_le32(qp->dest_qp);
454 p_ramrod->ack_timeout_val = cpu_to_le32(qp->ack_timeout);
455 p_ramrod->mtu = cpu_to_le16(qp->mtu);
456 p_ramrod->initial_psn = cpu_to_le32(qp->sq_psn);
457 p_ramrod->pd = cpu_to_le16(qp->pd);
458 p_ramrod->sq_num_pages = cpu_to_le16(qp->sq_num_pages);
459 DMA_REGPAIR_LE(p_ramrod->sq_pbl_addr, qp->sq_pbl_ptr);
460 DMA_REGPAIR_LE(p_ramrod->orq_pbl_addr, qp->orq_phys_addr);
461 qed_rdma_copy_gids(qp, p_ramrod->src_gid, p_ramrod->dst_gid);
462 p_ramrod->qp_handle_for_async.hi = cpu_to_le32(qp->qp_handle_async.hi);
463 p_ramrod->qp_handle_for_async.lo = cpu_to_le32(qp->qp_handle_async.lo);
464 p_ramrod->qp_handle_for_cqe.hi = cpu_to_le32(qp->qp_handle.hi);
465 p_ramrod->qp_handle_for_cqe.lo = cpu_to_le32(qp->qp_handle.lo);
466 p_ramrod->cq_cid =
467 cpu_to_le32((p_hwfn->hw_info.opaque_fid << 16) | qp->sq_cq_id);
468
469 tc = qed_roce_get_qp_tc(p_hwfn, qp);
470 regular_latency_queue = qed_get_cm_pq_idx_ofld_mtc(p_hwfn, tc);
471 low_latency_queue = qed_get_cm_pq_idx_llt_mtc(p_hwfn, tc);
472 DP_VERBOSE(p_hwfn, QED_MSG_SP,
473 "qp icid %u pqs: regular_latency %u low_latency %u\n",
474 qp->icid, regular_latency_queue - CM_TX_PQ_BASE,
475 low_latency_queue - CM_TX_PQ_BASE);
476 p_ramrod->regular_latency_phy_queue =
477 cpu_to_le16(regular_latency_queue);
478 p_ramrod->low_latency_phy_queue =
479 cpu_to_le16(low_latency_queue);
480
481 p_ramrod->dpi = cpu_to_le16(qp->dpi);
482
483 qed_rdma_set_fw_mac(p_ramrod->remote_mac_addr, qp->remote_mac_addr);
484 qed_rdma_set_fw_mac(p_ramrod->local_mac_addr, qp->local_mac_addr);
485
486 p_ramrod->udp_src_port = qp->udp_src_port;
487 p_ramrod->vlan_id = cpu_to_le16(qp->vlan_id);
488 p_ramrod->stats_counter_id = RESC_START(p_hwfn, QED_RDMA_STATS_QUEUE) +
489 qp->stats_queue;
490
491 rc = qed_spq_post(p_hwfn, p_ent, NULL);
492 if (rc)
493 goto err;
494
495 qp->req_offloaded = true;
496 proto = p_hwfn->p_rdma_info->proto;
497 qed_roce_set_real_cid(p_hwfn,
498 qp->icid + 1 -
499 qed_cxt_get_proto_cid_start(p_hwfn, proto));
500
501 return rc;
502
503 err:
504 DP_NOTICE(p_hwfn, "Create requested - failed, rc = %d\n", rc);
505 dma_free_coherent(&p_hwfn->cdev->pdev->dev,
506 qp->orq_num_pages * RDMA_RING_PAGE_SIZE,
507 qp->orq, qp->orq_phys_addr);
508 return rc;
509 }
510
511 static int qed_roce_sp_modify_responder(struct qed_hwfn *p_hwfn,
512 struct qed_rdma_qp *qp,
513 bool move_to_err, u32 modify_flags)
514 {
515 struct roce_modify_qp_resp_ramrod_data *p_ramrod;
516 struct qed_sp_init_data init_data;
517 struct qed_spq_entry *p_ent;
518 int rc;
519
520 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "icid = %08x\n", qp->icid);
521
522 if (move_to_err && !qp->resp_offloaded)
523 return 0;
524
525 /* Get SPQ entry */
526 memset(&init_data, 0, sizeof(init_data));
527 init_data.cid = qp->icid;
528 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
529 init_data.comp_mode = QED_SPQ_MODE_EBLOCK;
530
531 rc = qed_sp_init_request(p_hwfn, &p_ent,
532 ROCE_EVENT_MODIFY_QP,
533 PROTOCOLID_ROCE, &init_data);
534 if (rc) {
535 DP_NOTICE(p_hwfn, "rc = %d\n", rc);
536 return rc;
537 }
538
539 p_ramrod = &p_ent->ramrod.roce_modify_qp_resp;
540
541 p_ramrod->flags = 0;
542
543 SET_FIELD(p_ramrod->flags,
544 ROCE_MODIFY_QP_RESP_RAMROD_DATA_MOVE_TO_ERR_FLG, move_to_err);
545
546 SET_FIELD(p_ramrod->flags,
547 ROCE_MODIFY_QP_RESP_RAMROD_DATA_RDMA_RD_EN,
548 qp->incoming_rdma_read_en);
549
550 SET_FIELD(p_ramrod->flags,
551 ROCE_MODIFY_QP_RESP_RAMROD_DATA_RDMA_WR_EN,
552 qp->incoming_rdma_write_en);
553
554 SET_FIELD(p_ramrod->flags,
555 ROCE_MODIFY_QP_RESP_RAMROD_DATA_ATOMIC_EN,
556 qp->incoming_atomic_en);
557
558 SET_FIELD(p_ramrod->flags,
559 ROCE_CREATE_QP_RESP_RAMROD_DATA_E2E_FLOW_CONTROL_EN,
560 qp->e2e_flow_control_en);
561
562 SET_FIELD(p_ramrod->flags,
563 ROCE_MODIFY_QP_RESP_RAMROD_DATA_RDMA_OPS_EN_FLG,
564 GET_FIELD(modify_flags,
565 QED_RDMA_MODIFY_QP_VALID_RDMA_OPS_EN));
566
567 SET_FIELD(p_ramrod->flags,
568 ROCE_MODIFY_QP_RESP_RAMROD_DATA_P_KEY_FLG,
569 GET_FIELD(modify_flags, QED_ROCE_MODIFY_QP_VALID_PKEY));
570
571 SET_FIELD(p_ramrod->flags,
572 ROCE_MODIFY_QP_RESP_RAMROD_DATA_ADDRESS_VECTOR_FLG,
573 GET_FIELD(modify_flags,
574 QED_ROCE_MODIFY_QP_VALID_ADDRESS_VECTOR));
575
576 SET_FIELD(p_ramrod->flags,
577 ROCE_MODIFY_QP_RESP_RAMROD_DATA_MAX_IRD_FLG,
578 GET_FIELD(modify_flags,
579 QED_RDMA_MODIFY_QP_VALID_MAX_RD_ATOMIC_RESP));
580
581 SET_FIELD(p_ramrod->flags,
582 ROCE_MODIFY_QP_RESP_RAMROD_DATA_MIN_RNR_NAK_TIMER_FLG,
583 GET_FIELD(modify_flags,
584 QED_ROCE_MODIFY_QP_VALID_MIN_RNR_NAK_TIMER));
585
586 p_ramrod->fields = 0;
587 SET_FIELD(p_ramrod->fields,
588 ROCE_MODIFY_QP_RESP_RAMROD_DATA_MIN_RNR_NAK_TIMER,
589 qp->min_rnr_nak_timer);
590
591 p_ramrod->max_ird = qp->max_rd_atomic_resp;
592 p_ramrod->traffic_class = qp->traffic_class_tos;
593 p_ramrod->hop_limit = qp->hop_limit_ttl;
594 p_ramrod->p_key = cpu_to_le16(qp->pkey);
595 p_ramrod->flow_label = cpu_to_le32(qp->flow_label);
596 p_ramrod->mtu = cpu_to_le16(qp->mtu);
597 qed_rdma_copy_gids(qp, p_ramrod->src_gid, p_ramrod->dst_gid);
598 rc = qed_spq_post(p_hwfn, p_ent, NULL);
599
600 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "Modify responder, rc = %d\n", rc);
601 return rc;
602 }
603
604 static int qed_roce_sp_modify_requester(struct qed_hwfn *p_hwfn,
605 struct qed_rdma_qp *qp,
606 bool move_to_sqd,
607 bool move_to_err, u32 modify_flags)
608 {
609 struct roce_modify_qp_req_ramrod_data *p_ramrod;
610 struct qed_sp_init_data init_data;
611 struct qed_spq_entry *p_ent;
612 int rc;
613
614 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "icid = %08x\n", qp->icid);
615
616 if (move_to_err && !(qp->req_offloaded))
617 return 0;
618
619 /* Get SPQ entry */
620 memset(&init_data, 0, sizeof(init_data));
621 init_data.cid = qp->icid + 1;
622 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
623 init_data.comp_mode = QED_SPQ_MODE_EBLOCK;
624
625 rc = qed_sp_init_request(p_hwfn, &p_ent,
626 ROCE_EVENT_MODIFY_QP,
627 PROTOCOLID_ROCE, &init_data);
628 if (rc) {
629 DP_NOTICE(p_hwfn, "rc = %d\n", rc);
630 return rc;
631 }
632
633 p_ramrod = &p_ent->ramrod.roce_modify_qp_req;
634
635 p_ramrod->flags = 0;
636
637 SET_FIELD(p_ramrod->flags,
638 ROCE_MODIFY_QP_REQ_RAMROD_DATA_MOVE_TO_ERR_FLG, move_to_err);
639
640 SET_FIELD(p_ramrod->flags,
641 ROCE_MODIFY_QP_REQ_RAMROD_DATA_MOVE_TO_SQD_FLG, move_to_sqd);
642
643 SET_FIELD(p_ramrod->flags,
644 ROCE_MODIFY_QP_REQ_RAMROD_DATA_EN_SQD_ASYNC_NOTIFY,
645 qp->sqd_async);
646
647 SET_FIELD(p_ramrod->flags,
648 ROCE_MODIFY_QP_REQ_RAMROD_DATA_P_KEY_FLG,
649 GET_FIELD(modify_flags, QED_ROCE_MODIFY_QP_VALID_PKEY));
650
651 SET_FIELD(p_ramrod->flags,
652 ROCE_MODIFY_QP_REQ_RAMROD_DATA_ADDRESS_VECTOR_FLG,
653 GET_FIELD(modify_flags,
654 QED_ROCE_MODIFY_QP_VALID_ADDRESS_VECTOR));
655
656 SET_FIELD(p_ramrod->flags,
657 ROCE_MODIFY_QP_REQ_RAMROD_DATA_MAX_ORD_FLG,
658 GET_FIELD(modify_flags,
659 QED_RDMA_MODIFY_QP_VALID_MAX_RD_ATOMIC_REQ));
660
661 SET_FIELD(p_ramrod->flags,
662 ROCE_MODIFY_QP_REQ_RAMROD_DATA_RNR_NAK_CNT_FLG,
663 GET_FIELD(modify_flags,
664 QED_ROCE_MODIFY_QP_VALID_RNR_RETRY_CNT));
665
666 SET_FIELD(p_ramrod->flags,
667 ROCE_MODIFY_QP_REQ_RAMROD_DATA_ERR_RETRY_CNT_FLG,
668 GET_FIELD(modify_flags, QED_ROCE_MODIFY_QP_VALID_RETRY_CNT));
669
670 SET_FIELD(p_ramrod->flags,
671 ROCE_MODIFY_QP_REQ_RAMROD_DATA_ACK_TIMEOUT_FLG,
672 GET_FIELD(modify_flags,
673 QED_ROCE_MODIFY_QP_VALID_ACK_TIMEOUT));
674
675 p_ramrod->fields = 0;
676 SET_FIELD(p_ramrod->fields,
677 ROCE_MODIFY_QP_REQ_RAMROD_DATA_ERR_RETRY_CNT, qp->retry_cnt);
678
679 SET_FIELD(p_ramrod->fields,
680 ROCE_MODIFY_QP_REQ_RAMROD_DATA_RNR_NAK_CNT,
681 qp->rnr_retry_cnt);
682
683 p_ramrod->max_ord = qp->max_rd_atomic_req;
684 p_ramrod->traffic_class = qp->traffic_class_tos;
685 p_ramrod->hop_limit = qp->hop_limit_ttl;
686 p_ramrod->p_key = cpu_to_le16(qp->pkey);
687 p_ramrod->flow_label = cpu_to_le32(qp->flow_label);
688 p_ramrod->ack_timeout_val = cpu_to_le32(qp->ack_timeout);
689 p_ramrod->mtu = cpu_to_le16(qp->mtu);
690 qed_rdma_copy_gids(qp, p_ramrod->src_gid, p_ramrod->dst_gid);
691 rc = qed_spq_post(p_hwfn, p_ent, NULL);
692
693 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "Modify requester, rc = %d\n", rc);
694 return rc;
695 }
696
697 static int qed_roce_sp_destroy_qp_responder(struct qed_hwfn *p_hwfn,
698 struct qed_rdma_qp *qp,
699 u32 *cq_prod)
700 {
701 struct roce_destroy_qp_resp_output_params *p_ramrod_res;
702 struct roce_destroy_qp_resp_ramrod_data *p_ramrod;
703 struct qed_sp_init_data init_data;
704 struct qed_spq_entry *p_ent;
705 dma_addr_t ramrod_res_phys;
706 int rc;
707
708 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "icid = %08x\n", qp->icid);
709 *cq_prod = qp->cq_prod;
710
711 if (!qp->resp_offloaded) {
712 /* If a responder was never offload, we need to free the cids
713 * allocated in create_qp as a FW async event will never arrive
714 */
715 u32 cid;
716
717 cid = qp->icid -
718 qed_cxt_get_proto_cid_start(p_hwfn,
719 p_hwfn->p_rdma_info->proto);
720 qed_roce_free_cid_pair(p_hwfn, (u16)cid);
721
722 return 0;
723 }
724
725 /* Get SPQ entry */
726 memset(&init_data, 0, sizeof(init_data));
727 init_data.cid = qp->icid;
728 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
729 init_data.comp_mode = QED_SPQ_MODE_EBLOCK;
730
731 rc = qed_sp_init_request(p_hwfn, &p_ent,
732 ROCE_RAMROD_DESTROY_QP,
733 PROTOCOLID_ROCE, &init_data);
734 if (rc)
735 return rc;
736
737 p_ramrod = &p_ent->ramrod.roce_destroy_qp_resp;
738
739 p_ramrod_res = (struct roce_destroy_qp_resp_output_params *)
740 dma_alloc_coherent(&p_hwfn->cdev->pdev->dev, sizeof(*p_ramrod_res),
741 &ramrod_res_phys, GFP_KERNEL);
742
743 if (!p_ramrod_res) {
744 rc = -ENOMEM;
745 DP_NOTICE(p_hwfn,
746 "qed destroy responder failed: cannot allocate memory (ramrod). rc = %d\n",
747 rc);
748 qed_sp_destroy_request(p_hwfn, p_ent);
749 return rc;
750 }
751
752 DMA_REGPAIR_LE(p_ramrod->output_params_addr, ramrod_res_phys);
753
754 rc = qed_spq_post(p_hwfn, p_ent, NULL);
755 if (rc)
756 goto err;
757
758 *cq_prod = le32_to_cpu(p_ramrod_res->cq_prod);
759 qp->cq_prod = *cq_prod;
760
761 /* Free IRQ - only if ramrod succeeded, in case FW is still using it */
762 dma_free_coherent(&p_hwfn->cdev->pdev->dev,
763 qp->irq_num_pages * RDMA_RING_PAGE_SIZE,
764 qp->irq, qp->irq_phys_addr);
765
766 qp->resp_offloaded = false;
767
768 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "Destroy responder, rc = %d\n", rc);
769
770 err:
771 dma_free_coherent(&p_hwfn->cdev->pdev->dev,
772 sizeof(struct roce_destroy_qp_resp_output_params),
773 p_ramrod_res, ramrod_res_phys);
774
775 return rc;
776 }
777
778 static int qed_roce_sp_destroy_qp_requester(struct qed_hwfn *p_hwfn,
779 struct qed_rdma_qp *qp)
780 {
781 struct roce_destroy_qp_req_output_params *p_ramrod_res;
782 struct roce_destroy_qp_req_ramrod_data *p_ramrod;
783 struct qed_sp_init_data init_data;
784 struct qed_spq_entry *p_ent;
785 dma_addr_t ramrod_res_phys;
786 int rc = -ENOMEM;
787
788 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "icid = %08x\n", qp->icid);
789
790 if (!qp->req_offloaded)
791 return 0;
792
793 p_ramrod_res = (struct roce_destroy_qp_req_output_params *)
794 dma_alloc_coherent(&p_hwfn->cdev->pdev->dev,
795 sizeof(*p_ramrod_res),
796 &ramrod_res_phys, GFP_KERNEL);
797 if (!p_ramrod_res) {
798 DP_NOTICE(p_hwfn,
799 "qed destroy requester failed: cannot allocate memory (ramrod)\n");
800 return rc;
801 }
802
803 /* Get SPQ entry */
804 memset(&init_data, 0, sizeof(init_data));
805 init_data.cid = qp->icid + 1;
806 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
807 init_data.comp_mode = QED_SPQ_MODE_EBLOCK;
808
809 rc = qed_sp_init_request(p_hwfn, &p_ent, ROCE_RAMROD_DESTROY_QP,
810 PROTOCOLID_ROCE, &init_data);
811 if (rc)
812 goto err;
813
814 p_ramrod = &p_ent->ramrod.roce_destroy_qp_req;
815 DMA_REGPAIR_LE(p_ramrod->output_params_addr, ramrod_res_phys);
816
817 rc = qed_spq_post(p_hwfn, p_ent, NULL);
818 if (rc)
819 goto err;
820
821
822 /* Free ORQ - only if ramrod succeeded, in case FW is still using it */
823 dma_free_coherent(&p_hwfn->cdev->pdev->dev,
824 qp->orq_num_pages * RDMA_RING_PAGE_SIZE,
825 qp->orq, qp->orq_phys_addr);
826
827 qp->req_offloaded = false;
828
829 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "Destroy requester, rc = %d\n", rc);
830
831 err:
832 dma_free_coherent(&p_hwfn->cdev->pdev->dev, sizeof(*p_ramrod_res),
833 p_ramrod_res, ramrod_res_phys);
834
835 return rc;
836 }
837
838 int qed_roce_query_qp(struct qed_hwfn *p_hwfn,
839 struct qed_rdma_qp *qp,
840 struct qed_rdma_query_qp_out_params *out_params)
841 {
842 struct roce_query_qp_resp_output_params *p_resp_ramrod_res;
843 struct roce_query_qp_req_output_params *p_req_ramrod_res;
844 struct roce_query_qp_resp_ramrod_data *p_resp_ramrod;
845 struct roce_query_qp_req_ramrod_data *p_req_ramrod;
846 struct qed_sp_init_data init_data;
847 dma_addr_t resp_ramrod_res_phys;
848 dma_addr_t req_ramrod_res_phys;
849 struct qed_spq_entry *p_ent;
850 bool rq_err_state;
851 bool sq_err_state;
852 bool sq_draining;
853 int rc = -ENOMEM;
854
855 if ((!(qp->resp_offloaded)) && (!(qp->req_offloaded))) {
856 /* We can't send ramrod to the fw since this qp wasn't offloaded
857 * to the fw yet
858 */
859 out_params->draining = false;
860 out_params->rq_psn = qp->rq_psn;
861 out_params->sq_psn = qp->sq_psn;
862 out_params->state = qp->cur_state;
863
864 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "No QPs as no offload\n");
865 return 0;
866 }
867
868 if (!(qp->resp_offloaded)) {
869 DP_NOTICE(p_hwfn,
870 "The responder's qp should be offloaded before requester's\n");
871 return -EINVAL;
872 }
873
874 /* Send a query responder ramrod to FW to get RQ-PSN and state */
875 p_resp_ramrod_res = (struct roce_query_qp_resp_output_params *)
876 dma_alloc_coherent(&p_hwfn->cdev->pdev->dev,
877 sizeof(*p_resp_ramrod_res),
878 &resp_ramrod_res_phys, GFP_KERNEL);
879 if (!p_resp_ramrod_res) {
880 DP_NOTICE(p_hwfn,
881 "qed query qp failed: cannot allocate memory (ramrod)\n");
882 return rc;
883 }
884
885 /* Get SPQ entry */
886 memset(&init_data, 0, sizeof(init_data));
887 init_data.cid = qp->icid;
888 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
889 init_data.comp_mode = QED_SPQ_MODE_EBLOCK;
890 rc = qed_sp_init_request(p_hwfn, &p_ent, ROCE_RAMROD_QUERY_QP,
891 PROTOCOLID_ROCE, &init_data);
892 if (rc)
893 goto err_resp;
894
895 p_resp_ramrod = &p_ent->ramrod.roce_query_qp_resp;
896 DMA_REGPAIR_LE(p_resp_ramrod->output_params_addr, resp_ramrod_res_phys);
897
898 rc = qed_spq_post(p_hwfn, p_ent, NULL);
899 if (rc)
900 goto err_resp;
901
902 out_params->rq_psn = le32_to_cpu(p_resp_ramrod_res->psn);
903 rq_err_state = GET_FIELD(le32_to_cpu(p_resp_ramrod_res->err_flag),
904 ROCE_QUERY_QP_RESP_OUTPUT_PARAMS_ERROR_FLG);
905
906 dma_free_coherent(&p_hwfn->cdev->pdev->dev, sizeof(*p_resp_ramrod_res),
907 p_resp_ramrod_res, resp_ramrod_res_phys);
908
909 if (!(qp->req_offloaded)) {
910 /* Don't send query qp for the requester */
911 out_params->sq_psn = qp->sq_psn;
912 out_params->draining = false;
913
914 if (rq_err_state)
915 qp->cur_state = QED_ROCE_QP_STATE_ERR;
916
917 out_params->state = qp->cur_state;
918
919 return 0;
920 }
921
922 /* Send a query requester ramrod to FW to get SQ-PSN and state */
923 p_req_ramrod_res = (struct roce_query_qp_req_output_params *)
924 dma_alloc_coherent(&p_hwfn->cdev->pdev->dev,
925 sizeof(*p_req_ramrod_res),
926 &req_ramrod_res_phys,
927 GFP_KERNEL);
928 if (!p_req_ramrod_res) {
929 rc = -ENOMEM;
930 DP_NOTICE(p_hwfn,
931 "qed query qp failed: cannot allocate memory (ramrod)\n");
932 return rc;
933 }
934
935 /* Get SPQ entry */
936 init_data.cid = qp->icid + 1;
937 rc = qed_sp_init_request(p_hwfn, &p_ent, ROCE_RAMROD_QUERY_QP,
938 PROTOCOLID_ROCE, &init_data);
939 if (rc)
940 goto err_req;
941
942 p_req_ramrod = &p_ent->ramrod.roce_query_qp_req;
943 DMA_REGPAIR_LE(p_req_ramrod->output_params_addr, req_ramrod_res_phys);
944
945 rc = qed_spq_post(p_hwfn, p_ent, NULL);
946 if (rc)
947 goto err_req;
948
949 out_params->sq_psn = le32_to_cpu(p_req_ramrod_res->psn);
950 sq_err_state = GET_FIELD(le32_to_cpu(p_req_ramrod_res->flags),
951 ROCE_QUERY_QP_REQ_OUTPUT_PARAMS_ERR_FLG);
952 sq_draining =
953 GET_FIELD(le32_to_cpu(p_req_ramrod_res->flags),
954 ROCE_QUERY_QP_REQ_OUTPUT_PARAMS_SQ_DRAINING_FLG);
955
956 dma_free_coherent(&p_hwfn->cdev->pdev->dev, sizeof(*p_req_ramrod_res),
957 p_req_ramrod_res, req_ramrod_res_phys);
958
959 out_params->draining = false;
960
961 if (rq_err_state || sq_err_state)
962 qp->cur_state = QED_ROCE_QP_STATE_ERR;
963 else if (sq_draining)
964 out_params->draining = true;
965 out_params->state = qp->cur_state;
966
967 return 0;
968
969 err_req:
970 dma_free_coherent(&p_hwfn->cdev->pdev->dev, sizeof(*p_req_ramrod_res),
971 p_req_ramrod_res, req_ramrod_res_phys);
972 return rc;
973 err_resp:
974 dma_free_coherent(&p_hwfn->cdev->pdev->dev, sizeof(*p_resp_ramrod_res),
975 p_resp_ramrod_res, resp_ramrod_res_phys);
976 return rc;
977 }
978
979 int qed_roce_destroy_qp(struct qed_hwfn *p_hwfn, struct qed_rdma_qp *qp)
980 {
981 u32 cq_prod;
982 int rc;
983
984 /* Destroys the specified QP */
985 if ((qp->cur_state != QED_ROCE_QP_STATE_RESET) &&
986 (qp->cur_state != QED_ROCE_QP_STATE_ERR) &&
987 (qp->cur_state != QED_ROCE_QP_STATE_INIT)) {
988 DP_NOTICE(p_hwfn,
989 "QP must be in error, reset or init state before destroying it\n");
990 return -EINVAL;
991 }
992
993 if (qp->cur_state != QED_ROCE_QP_STATE_RESET) {
994 rc = qed_roce_sp_destroy_qp_responder(p_hwfn, qp,
995 &cq_prod);
996 if (rc)
997 return rc;
998
999 /* Send destroy requester ramrod */
1000 rc = qed_roce_sp_destroy_qp_requester(p_hwfn, qp);
1001 if (rc)
1002 return rc;
1003 }
1004
1005 return 0;
1006 }
1007
1008 int qed_roce_modify_qp(struct qed_hwfn *p_hwfn,
1009 struct qed_rdma_qp *qp,
1010 enum qed_roce_qp_state prev_state,
1011 struct qed_rdma_modify_qp_in_params *params)
1012 {
1013 int rc = 0;
1014
1015 /* Perform additional operations according to the current state and the
1016 * next state
1017 */
1018 if (((prev_state == QED_ROCE_QP_STATE_INIT) ||
1019 (prev_state == QED_ROCE_QP_STATE_RESET)) &&
1020 (qp->cur_state == QED_ROCE_QP_STATE_RTR)) {
1021 /* Init->RTR or Reset->RTR */
1022 rc = qed_roce_sp_create_responder(p_hwfn, qp);
1023 return rc;
1024 } else if ((prev_state == QED_ROCE_QP_STATE_RTR) &&
1025 (qp->cur_state == QED_ROCE_QP_STATE_RTS)) {
1026 /* RTR-> RTS */
1027 rc = qed_roce_sp_create_requester(p_hwfn, qp);
1028 if (rc)
1029 return rc;
1030
1031 /* Send modify responder ramrod */
1032 rc = qed_roce_sp_modify_responder(p_hwfn, qp, false,
1033 params->modify_flags);
1034 return rc;
1035 } else if ((prev_state == QED_ROCE_QP_STATE_RTS) &&
1036 (qp->cur_state == QED_ROCE_QP_STATE_RTS)) {
1037 /* RTS->RTS */
1038 rc = qed_roce_sp_modify_responder(p_hwfn, qp, false,
1039 params->modify_flags);
1040 if (rc)
1041 return rc;
1042
1043 rc = qed_roce_sp_modify_requester(p_hwfn, qp, false, false,
1044 params->modify_flags);
1045 return rc;
1046 } else if ((prev_state == QED_ROCE_QP_STATE_RTS) &&
1047 (qp->cur_state == QED_ROCE_QP_STATE_SQD)) {
1048 /* RTS->SQD */
1049 rc = qed_roce_sp_modify_requester(p_hwfn, qp, true, false,
1050 params->modify_flags);
1051 return rc;
1052 } else if ((prev_state == QED_ROCE_QP_STATE_SQD) &&
1053 (qp->cur_state == QED_ROCE_QP_STATE_SQD)) {
1054 /* SQD->SQD */
1055 rc = qed_roce_sp_modify_responder(p_hwfn, qp, false,
1056 params->modify_flags);
1057 if (rc)
1058 return rc;
1059
1060 rc = qed_roce_sp_modify_requester(p_hwfn, qp, false, false,
1061 params->modify_flags);
1062 return rc;
1063 } else if ((prev_state == QED_ROCE_QP_STATE_SQD) &&
1064 (qp->cur_state == QED_ROCE_QP_STATE_RTS)) {
1065 /* SQD->RTS */
1066 rc = qed_roce_sp_modify_responder(p_hwfn, qp, false,
1067 params->modify_flags);
1068 if (rc)
1069 return rc;
1070
1071 rc = qed_roce_sp_modify_requester(p_hwfn, qp, false, false,
1072 params->modify_flags);
1073
1074 return rc;
1075 } else if (qp->cur_state == QED_ROCE_QP_STATE_ERR) {
1076 /* ->ERR */
1077 rc = qed_roce_sp_modify_responder(p_hwfn, qp, true,
1078 params->modify_flags);
1079 if (rc)
1080 return rc;
1081
1082 rc = qed_roce_sp_modify_requester(p_hwfn, qp, false, true,
1083 params->modify_flags);
1084 return rc;
1085 } else if (qp->cur_state == QED_ROCE_QP_STATE_RESET) {
1086 /* Any state -> RESET */
1087 u32 cq_prod;
1088
1089 /* Send destroy responder ramrod */
1090 rc = qed_roce_sp_destroy_qp_responder(p_hwfn,
1091 qp,
1092 &cq_prod);
1093
1094 if (rc)
1095 return rc;
1096
1097 qp->cq_prod = cq_prod;
1098
1099 rc = qed_roce_sp_destroy_qp_requester(p_hwfn, qp);
1100 } else {
1101 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "0\n");
1102 }
1103
1104 return rc;
1105 }
1106
1107 static void qed_roce_free_real_icid(struct qed_hwfn *p_hwfn, u16 icid)
1108 {
1109 struct qed_rdma_info *p_rdma_info = p_hwfn->p_rdma_info;
1110 u32 start_cid, cid, xcid;
1111
1112 /* an even icid belongs to a responder while an odd icid belongs to a
1113 * requester. The 'cid' received as an input can be either. We calculate
1114 * the "partner" icid and call it xcid. Only if both are free then the
1115 * "cid" map can be cleared.
1116 */
1117 start_cid = qed_cxt_get_proto_cid_start(p_hwfn, p_rdma_info->proto);
1118 cid = icid - start_cid;
1119 xcid = cid ^ 1;
1120
1121 spin_lock_bh(&p_rdma_info->lock);
1122
1123 qed_bmap_release_id(p_hwfn, &p_rdma_info->real_cid_map, cid);
1124 if (qed_bmap_test_id(p_hwfn, &p_rdma_info->real_cid_map, xcid) == 0) {
1125 qed_bmap_release_id(p_hwfn, &p_rdma_info->cid_map, cid);
1126 qed_bmap_release_id(p_hwfn, &p_rdma_info->cid_map, xcid);
1127 }
1128
1129 spin_unlock_bh(&p_hwfn->p_rdma_info->lock);
1130 }
1131
1132 void qed_roce_dpm_dcbx(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt)
1133 {
1134 u8 val;
1135
1136 /* if any QPs are already active, we want to disable DPM, since their
1137 * context information contains information from before the latest DCBx
1138 * update. Otherwise enable it.
1139 */
1140 val = qed_rdma_allocated_qps(p_hwfn) ? true : false;
1141 p_hwfn->dcbx_no_edpm = (u8)val;
1142
1143 qed_rdma_dpm_conf(p_hwfn, p_ptt);
1144 }
1145
1146 int qed_roce_setup(struct qed_hwfn *p_hwfn)
1147 {
1148 return qed_spq_register_async_cb(p_hwfn, PROTOCOLID_ROCE,
1149 qed_roce_async_event);
1150 }
1151
1152 int qed_roce_init_hw(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt)
1153 {
1154 u32 ll2_ethertype_en;
1155
1156 qed_wr(p_hwfn, p_ptt, PRS_REG_ROCE_DEST_QP_MAX_PF, 0);
1157
1158 p_hwfn->rdma_prs_search_reg = PRS_REG_SEARCH_ROCE;
1159
1160 ll2_ethertype_en = qed_rd(p_hwfn, p_ptt, PRS_REG_LIGHT_L2_ETHERTYPE_EN);
1161 qed_wr(p_hwfn, p_ptt, PRS_REG_LIGHT_L2_ETHERTYPE_EN,
1162 (ll2_ethertype_en | 0x01));
1163
1164 if (qed_cxt_get_proto_cid_start(p_hwfn, PROTOCOLID_ROCE) % 2) {
1165 DP_NOTICE(p_hwfn, "The first RoCE's cid should be even\n");
1166 return -EINVAL;
1167 }
1168
1169 DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "Initializing HW - Done\n");
1170 return 0;
1171 }
Linux with added FPC-III support