1 // SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB
2 /* Copyright (c) 2015 - 2021 Intel Corporation */
3 #include "osdep.h"
4 #include "hmc.h"
5 #include "defs.h"
6 #include "type.h"
7 #include "protos.h"
8 #include "puda.h"
9 #include "ws.h"
10
11 static void irdma_ieq_receive(struct irdma_sc_vsi *vsi,
12 struct irdma_puda_buf *buf);
13 static void irdma_ieq_tx_compl(struct irdma_sc_vsi *vsi, void *sqwrid);
14 static void irdma_ilq_putback_rcvbuf(struct irdma_sc_qp *qp,
15 struct irdma_puda_buf *buf, u32 wqe_idx);
16 /**
17 * irdma_puda_get_listbuf - get buffer from puda list
18 * @list: list to use for buffers (ILQ or IEQ)
19 */
irdma_puda_get_listbuf(struct list_head * list)20 static struct irdma_puda_buf *irdma_puda_get_listbuf(struct list_head *list)
21 {
22 struct irdma_puda_buf *buf = NULL;
23
24 if (!list_empty(list)) {
25 buf = (struct irdma_puda_buf *)list->next;
26 list_del((struct list_head *)&buf->list);
27 }
28
29 return buf;
30 }
31
32 /**
33 * irdma_puda_get_bufpool - return buffer from resource
34 * @rsrc: resource to use for buffer
35 */
irdma_puda_get_bufpool(struct irdma_puda_rsrc * rsrc)36 struct irdma_puda_buf *irdma_puda_get_bufpool(struct irdma_puda_rsrc *rsrc)
37 {
38 struct irdma_puda_buf *buf = NULL;
39 struct list_head *list = &rsrc->bufpool;
40 unsigned long flags;
41
42 spin_lock_irqsave(&rsrc->bufpool_lock, flags);
43 buf = irdma_puda_get_listbuf(list);
44 if (buf) {
45 rsrc->avail_buf_count--;
46 buf->vsi = rsrc->vsi;
47 } else {
48 rsrc->stats_buf_alloc_fail++;
49 }
50 spin_unlock_irqrestore(&rsrc->bufpool_lock, flags);
51
52 return buf;
53 }
54
55 /**
56 * irdma_puda_ret_bufpool - return buffer to rsrc list
57 * @rsrc: resource to use for buffer
58 * @buf: buffer to return to resource
59 */
irdma_puda_ret_bufpool(struct irdma_puda_rsrc * rsrc,struct irdma_puda_buf * buf)60 void irdma_puda_ret_bufpool(struct irdma_puda_rsrc *rsrc,
61 struct irdma_puda_buf *buf)
62 {
63 unsigned long flags;
64
65 buf->do_lpb = false;
66 spin_lock_irqsave(&rsrc->bufpool_lock, flags);
67 list_add(&buf->list, &rsrc->bufpool);
68 spin_unlock_irqrestore(&rsrc->bufpool_lock, flags);
69 rsrc->avail_buf_count++;
70 }
71
72 /**
73 * irdma_puda_post_recvbuf - set wqe for rcv buffer
74 * @rsrc: resource ptr
75 * @wqe_idx: wqe index to use
76 * @buf: puda buffer for rcv q
77 * @initial: flag if during init time
78 */
irdma_puda_post_recvbuf(struct irdma_puda_rsrc * rsrc,u32 wqe_idx,struct irdma_puda_buf * buf,bool initial)79 static void irdma_puda_post_recvbuf(struct irdma_puda_rsrc *rsrc, u32 wqe_idx,
80 struct irdma_puda_buf *buf, bool initial)
81 {
82 __le64 *wqe;
83 struct irdma_sc_qp *qp = &rsrc->qp;
84 u64 offset24 = 0;
85
86 /* Synch buffer for use by device */
87 dma_sync_single_for_device(rsrc->dev->hw->device, buf->mem.pa,
88 buf->mem.size, DMA_BIDIRECTIONAL);
89 qp->qp_uk.rq_wrid_array[wqe_idx] = (uintptr_t)buf;
90 wqe = qp->qp_uk.rq_base[wqe_idx].elem;
91 if (!initial)
92 get_64bit_val(wqe, 24, &offset24);
93
94 offset24 = (offset24) ? 0 : FIELD_PREP(IRDMAQPSQ_VALID, 1);
95
96 set_64bit_val(wqe, 16, 0);
97 set_64bit_val(wqe, 0, buf->mem.pa);
98 if (qp->qp_uk.uk_attrs->hw_rev == IRDMA_GEN_1) {
99 set_64bit_val(wqe, 8,
100 FIELD_PREP(IRDMAQPSQ_GEN1_FRAG_LEN, buf->mem.size));
101 } else {
102 set_64bit_val(wqe, 8,
103 FIELD_PREP(IRDMAQPSQ_FRAG_LEN, buf->mem.size) |
104 offset24);
105 }
106 dma_wmb(); /* make sure WQE is written before valid bit is set */
107
108 set_64bit_val(wqe, 24, offset24);
109 }
110
111 /**
112 * irdma_puda_replenish_rq - post rcv buffers
113 * @rsrc: resource to use for buffer
114 * @initial: flag if during init time
115 */
irdma_puda_replenish_rq(struct irdma_puda_rsrc * rsrc,bool initial)116 static int irdma_puda_replenish_rq(struct irdma_puda_rsrc *rsrc, bool initial)
117 {
118 u32 i;
119 u32 invalid_cnt = rsrc->rxq_invalid_cnt;
120 struct irdma_puda_buf *buf = NULL;
121
122 for (i = 0; i < invalid_cnt; i++) {
123 buf = irdma_puda_get_bufpool(rsrc);
124 if (!buf)
125 return -ENOBUFS;
126 irdma_puda_post_recvbuf(rsrc, rsrc->rx_wqe_idx, buf, initial);
127 rsrc->rx_wqe_idx = ((rsrc->rx_wqe_idx + 1) % rsrc->rq_size);
128 rsrc->rxq_invalid_cnt--;
129 }
130
131 return 0;
132 }
133
134 /**
135 * irdma_puda_alloc_buf - allocate mem for buffer
136 * @dev: iwarp device
137 * @len: length of buffer
138 */
irdma_puda_alloc_buf(struct irdma_sc_dev * dev,u32 len)139 static struct irdma_puda_buf *irdma_puda_alloc_buf(struct irdma_sc_dev *dev,
140 u32 len)
141 {
142 struct irdma_puda_buf *buf;
143 struct irdma_virt_mem buf_mem;
144
145 buf_mem.size = sizeof(struct irdma_puda_buf);
146 buf_mem.va = kzalloc(buf_mem.size, GFP_KERNEL);
147 if (!buf_mem.va)
148 return NULL;
149
150 buf = buf_mem.va;
151 buf->mem.size = len;
152 buf->mem.va = kzalloc(buf->mem.size, GFP_KERNEL);
153 if (!buf->mem.va)
154 goto free_virt;
155 buf->mem.pa = dma_map_single(dev->hw->device, buf->mem.va,
156 buf->mem.size, DMA_BIDIRECTIONAL);
157 if (dma_mapping_error(dev->hw->device, buf->mem.pa)) {
158 kfree(buf->mem.va);
159 goto free_virt;
160 }
161
162 buf->buf_mem.va = buf_mem.va;
163 buf->buf_mem.size = buf_mem.size;
164
165 return buf;
166
167 free_virt:
168 kfree(buf_mem.va);
169 return NULL;
170 }
171
172 /**
173 * irdma_puda_dele_buf - delete buffer back to system
174 * @dev: iwarp device
175 * @buf: buffer to free
176 */
irdma_puda_dele_buf(struct irdma_sc_dev * dev,struct irdma_puda_buf * buf)177 static void irdma_puda_dele_buf(struct irdma_sc_dev *dev,
178 struct irdma_puda_buf *buf)
179 {
180 dma_unmap_single(dev->hw->device, buf->mem.pa, buf->mem.size,
181 DMA_BIDIRECTIONAL);
182 kfree(buf->mem.va);
183 kfree(buf->buf_mem.va);
184 }
185
186 /**
187 * irdma_puda_get_next_send_wqe - return next wqe for processing
188 * @qp: puda qp for wqe
189 * @wqe_idx: wqe index for caller
190 */
irdma_puda_get_next_send_wqe(struct irdma_qp_uk * qp,u32 * wqe_idx)191 static __le64 *irdma_puda_get_next_send_wqe(struct irdma_qp_uk *qp,
192 u32 *wqe_idx)
193 {
194 int ret_code = 0;
195
196 *wqe_idx = IRDMA_RING_CURRENT_HEAD(qp->sq_ring);
197 if (!*wqe_idx)
198 qp->swqe_polarity = !qp->swqe_polarity;
199 IRDMA_RING_MOVE_HEAD(qp->sq_ring, ret_code);
200 if (ret_code)
201 return NULL;
202
203 return qp->sq_base[*wqe_idx].elem;
204 }
205
206 /**
207 * irdma_puda_poll_info - poll cq for completion
208 * @cq: cq for poll
209 * @info: info return for successful completion
210 */
irdma_puda_poll_info(struct irdma_sc_cq * cq,struct irdma_puda_cmpl_info * info)211 static int irdma_puda_poll_info(struct irdma_sc_cq *cq,
212 struct irdma_puda_cmpl_info *info)
213 {
214 struct irdma_cq_uk *cq_uk = &cq->cq_uk;
215 u64 qword0, qword2, qword3, qword6;
216 __le64 *cqe;
217 __le64 *ext_cqe = NULL;
218 u64 qword7 = 0;
219 u64 comp_ctx;
220 bool valid_bit;
221 bool ext_valid = 0;
222 u32 major_err, minor_err;
223 u32 peek_head;
224 bool error;
225 u8 polarity;
226
227 cqe = IRDMA_GET_CURRENT_CQ_ELEM(&cq->cq_uk);
228 get_64bit_val(cqe, 24, &qword3);
229 valid_bit = (bool)FIELD_GET(IRDMA_CQ_VALID, qword3);
230 if (valid_bit != cq_uk->polarity)
231 return -ENOENT;
232
233 /* Ensure CQE contents are read after valid bit is checked */
234 dma_rmb();
235
236 if (cq->dev->hw_attrs.uk_attrs.hw_rev >= IRDMA_GEN_2)
237 ext_valid = (bool)FIELD_GET(IRDMA_CQ_EXTCQE, qword3);
238
239 if (ext_valid) {
240 peek_head = (cq_uk->cq_ring.head + 1) % cq_uk->cq_ring.size;
241 ext_cqe = cq_uk->cq_base[peek_head].buf;
242 get_64bit_val(ext_cqe, 24, &qword7);
243 polarity = (u8)FIELD_GET(IRDMA_CQ_VALID, qword7);
244 if (!peek_head)
245 polarity ^= 1;
246 if (polarity != cq_uk->polarity)
247 return -ENOENT;
248
249 /* Ensure ext CQE contents are read after ext valid bit is checked */
250 dma_rmb();
251
252 IRDMA_RING_MOVE_HEAD_NOCHECK(cq_uk->cq_ring);
253 if (!IRDMA_RING_CURRENT_HEAD(cq_uk->cq_ring))
254 cq_uk->polarity = !cq_uk->polarity;
255 /* update cq tail in cq shadow memory also */
256 IRDMA_RING_MOVE_TAIL(cq_uk->cq_ring);
257 }
258
259 print_hex_dump_debug("PUDA: PUDA CQE", DUMP_PREFIX_OFFSET, 16, 8, cqe,
260 32, false);
261 if (ext_valid)
262 print_hex_dump_debug("PUDA: PUDA EXT-CQE", DUMP_PREFIX_OFFSET,
263 16, 8, ext_cqe, 32, false);
264
265 error = (bool)FIELD_GET(IRDMA_CQ_ERROR, qword3);
266 if (error) {
267 ibdev_dbg(to_ibdev(cq->dev), "PUDA: receive error\n");
268 major_err = (u32)(FIELD_GET(IRDMA_CQ_MAJERR, qword3));
269 minor_err = (u32)(FIELD_GET(IRDMA_CQ_MINERR, qword3));
270 info->compl_error = major_err << 16 | minor_err;
271 return -EIO;
272 }
273
274 get_64bit_val(cqe, 0, &qword0);
275 get_64bit_val(cqe, 16, &qword2);
276
277 info->q_type = (u8)FIELD_GET(IRDMA_CQ_SQ, qword3);
278 info->qp_id = (u32)FIELD_GET(IRDMACQ_QPID, qword2);
279 if (cq->dev->hw_attrs.uk_attrs.hw_rev >= IRDMA_GEN_2)
280 info->ipv4 = (bool)FIELD_GET(IRDMACQ_IPV4, qword3);
281
282 get_64bit_val(cqe, 8, &comp_ctx);
283 info->qp = (struct irdma_qp_uk *)(unsigned long)comp_ctx;
284 info->wqe_idx = (u32)FIELD_GET(IRDMA_CQ_WQEIDX, qword3);
285
286 if (info->q_type == IRDMA_CQE_QTYPE_RQ) {
287 if (ext_valid) {
288 info->vlan_valid = (bool)FIELD_GET(IRDMA_CQ_UDVLANVALID, qword7);
289 if (info->vlan_valid) {
290 get_64bit_val(ext_cqe, 16, &qword6);
291 info->vlan = (u16)FIELD_GET(IRDMA_CQ_UDVLAN, qword6);
292 }
293 info->smac_valid = (bool)FIELD_GET(IRDMA_CQ_UDSMACVALID, qword7);
294 if (info->smac_valid) {
295 get_64bit_val(ext_cqe, 16, &qword6);
296 info->smac[0] = (u8)((qword6 >> 40) & 0xFF);
297 info->smac[1] = (u8)((qword6 >> 32) & 0xFF);
298 info->smac[2] = (u8)((qword6 >> 24) & 0xFF);
299 info->smac[3] = (u8)((qword6 >> 16) & 0xFF);
300 info->smac[4] = (u8)((qword6 >> 8) & 0xFF);
301 info->smac[5] = (u8)(qword6 & 0xFF);
302 }
303 }
304
305 if (cq->dev->hw_attrs.uk_attrs.hw_rev == IRDMA_GEN_1) {
306 info->vlan_valid = (bool)FIELD_GET(IRDMA_VLAN_TAG_VALID, qword3);
307 info->l4proto = (u8)FIELD_GET(IRDMA_UDA_L4PROTO, qword2);
308 info->l3proto = (u8)FIELD_GET(IRDMA_UDA_L3PROTO, qword2);
309 }
310
311 info->payload_len = (u32)FIELD_GET(IRDMACQ_PAYLDLEN, qword0);
312 }
313
314 return 0;
315 }
316
317 /**
318 * irdma_puda_poll_cmpl - processes completion for cq
319 * @dev: iwarp device
320 * @cq: cq getting interrupt
321 * @compl_err: return any completion err
322 */
irdma_puda_poll_cmpl(struct irdma_sc_dev * dev,struct irdma_sc_cq * cq,u32 * compl_err)323 int irdma_puda_poll_cmpl(struct irdma_sc_dev *dev, struct irdma_sc_cq *cq,
324 u32 *compl_err)
325 {
326 struct irdma_qp_uk *qp;
327 struct irdma_cq_uk *cq_uk = &cq->cq_uk;
328 struct irdma_puda_cmpl_info info = {};
329 int ret = 0;
330 struct irdma_puda_buf *buf;
331 struct irdma_puda_rsrc *rsrc;
332 u8 cq_type = cq->cq_type;
333 unsigned long flags;
334
335 if (cq_type == IRDMA_CQ_TYPE_ILQ || cq_type == IRDMA_CQ_TYPE_IEQ) {
336 rsrc = (cq_type == IRDMA_CQ_TYPE_ILQ) ? cq->vsi->ilq :
337 cq->vsi->ieq;
338 } else {
339 ibdev_dbg(to_ibdev(dev), "PUDA: qp_type error\n");
340 return -EINVAL;
341 }
342
343 ret = irdma_puda_poll_info(cq, &info);
344 *compl_err = info.compl_error;
345 if (ret == -ENOENT)
346 return ret;
347 if (ret)
348 goto done;
349
350 qp = info.qp;
351 if (!qp || !rsrc) {
352 ret = -EFAULT;
353 goto done;
354 }
355
356 if (qp->qp_id != rsrc->qp_id) {
357 ret = -EFAULT;
358 goto done;
359 }
360
361 if (info.q_type == IRDMA_CQE_QTYPE_RQ) {
362 buf = (struct irdma_puda_buf *)(uintptr_t)
363 qp->rq_wrid_array[info.wqe_idx];
364
365 /* reusing so synch the buffer for CPU use */
366 dma_sync_single_for_cpu(dev->hw->device, buf->mem.pa,
367 buf->mem.size, DMA_BIDIRECTIONAL);
368 /* Get all the tcpip information in the buf header */
369 ret = irdma_puda_get_tcpip_info(&info, buf);
370 if (ret) {
371 rsrc->stats_rcvd_pkt_err++;
372 if (cq_type == IRDMA_CQ_TYPE_ILQ) {
373 irdma_ilq_putback_rcvbuf(&rsrc->qp, buf,
374 info.wqe_idx);
375 } else {
376 irdma_puda_ret_bufpool(rsrc, buf);
377 irdma_puda_replenish_rq(rsrc, false);
378 }
379 goto done;
380 }
381
382 rsrc->stats_pkt_rcvd++;
383 rsrc->compl_rxwqe_idx = info.wqe_idx;
384 ibdev_dbg(to_ibdev(dev), "PUDA: RQ completion\n");
385 rsrc->receive(rsrc->vsi, buf);
386 if (cq_type == IRDMA_CQ_TYPE_ILQ)
387 irdma_ilq_putback_rcvbuf(&rsrc->qp, buf, info.wqe_idx);
388 else
389 irdma_puda_replenish_rq(rsrc, false);
390
391 } else {
392 ibdev_dbg(to_ibdev(dev), "PUDA: SQ completion\n");
393 buf = (struct irdma_puda_buf *)(uintptr_t)
394 qp->sq_wrtrk_array[info.wqe_idx].wrid;
395
396 /* reusing so synch the buffer for CPU use */
397 dma_sync_single_for_cpu(dev->hw->device, buf->mem.pa,
398 buf->mem.size, DMA_BIDIRECTIONAL);
399 IRDMA_RING_SET_TAIL(qp->sq_ring, info.wqe_idx);
400 rsrc->xmit_complete(rsrc->vsi, buf);
401 spin_lock_irqsave(&rsrc->bufpool_lock, flags);
402 rsrc->tx_wqe_avail_cnt++;
403 spin_unlock_irqrestore(&rsrc->bufpool_lock, flags);
404 if (!list_empty(&rsrc->txpend))
405 irdma_puda_send_buf(rsrc, NULL);
406 }
407
408 done:
409 IRDMA_RING_MOVE_HEAD_NOCHECK(cq_uk->cq_ring);
410 if (!IRDMA_RING_CURRENT_HEAD(cq_uk->cq_ring))
411 cq_uk->polarity = !cq_uk->polarity;
412 /* update cq tail in cq shadow memory also */
413 IRDMA_RING_MOVE_TAIL(cq_uk->cq_ring);
414 set_64bit_val(cq_uk->shadow_area, 0,
415 IRDMA_RING_CURRENT_HEAD(cq_uk->cq_ring));
416
417 return ret;
418 }
419
420 /**
421 * irdma_puda_send - complete send wqe for transmit
422 * @qp: puda qp for send
423 * @info: buffer information for transmit
424 */
irdma_puda_send(struct irdma_sc_qp * qp,struct irdma_puda_send_info * info)425 int irdma_puda_send(struct irdma_sc_qp *qp, struct irdma_puda_send_info *info)
426 {
427 __le64 *wqe;
428 u32 iplen, l4len;
429 u64 hdr[2];
430 u32 wqe_idx;
431 u8 iipt;
432
433 /* number of 32 bits DWORDS in header */
434 l4len = info->tcplen >> 2;
435 if (info->ipv4) {
436 iipt = 3;
437 iplen = 5;
438 } else {
439 iipt = 1;
440 iplen = 10;
441 }
442
443 wqe = irdma_puda_get_next_send_wqe(&qp->qp_uk, &wqe_idx);
444 if (!wqe)
445 return -ENOMEM;
446
447 qp->qp_uk.sq_wrtrk_array[wqe_idx].wrid = (uintptr_t)info->scratch;
448 /* Third line of WQE descriptor */
449 /* maclen is in words */
450
451 if (qp->dev->hw_attrs.uk_attrs.hw_rev >= IRDMA_GEN_2) {
452 hdr[0] = 0; /* Dest_QPN and Dest_QKey only for UD */
453 hdr[1] = FIELD_PREP(IRDMA_UDA_QPSQ_OPCODE, IRDMA_OP_TYPE_SEND) |
454 FIELD_PREP(IRDMA_UDA_QPSQ_L4LEN, l4len) |
455 FIELD_PREP(IRDMAQPSQ_AHID, info->ah_id) |
456 FIELD_PREP(IRDMA_UDA_QPSQ_SIGCOMPL, 1) |
457 FIELD_PREP(IRDMA_UDA_QPSQ_VALID,
458 qp->qp_uk.swqe_polarity);
459
460 /* Forth line of WQE descriptor */
461
462 set_64bit_val(wqe, 0, info->paddr);
463 set_64bit_val(wqe, 8,
464 FIELD_PREP(IRDMAQPSQ_FRAG_LEN, info->len) |
465 FIELD_PREP(IRDMA_UDA_QPSQ_VALID, qp->qp_uk.swqe_polarity));
466 } else {
467 hdr[0] = FIELD_PREP(IRDMA_UDA_QPSQ_MACLEN, info->maclen >> 1) |
468 FIELD_PREP(IRDMA_UDA_QPSQ_IPLEN, iplen) |
469 FIELD_PREP(IRDMA_UDA_QPSQ_L4T, 1) |
470 FIELD_PREP(IRDMA_UDA_QPSQ_IIPT, iipt) |
471 FIELD_PREP(IRDMA_GEN1_UDA_QPSQ_L4LEN, l4len);
472
473 hdr[1] = FIELD_PREP(IRDMA_UDA_QPSQ_OPCODE, IRDMA_OP_TYPE_SEND) |
474 FIELD_PREP(IRDMA_UDA_QPSQ_SIGCOMPL, 1) |
475 FIELD_PREP(IRDMA_UDA_QPSQ_DOLOOPBACK, info->do_lpb) |
476 FIELD_PREP(IRDMA_UDA_QPSQ_VALID, qp->qp_uk.swqe_polarity);
477
478 /* Forth line of WQE descriptor */
479
480 set_64bit_val(wqe, 0, info->paddr);
481 set_64bit_val(wqe, 8,
482 FIELD_PREP(IRDMAQPSQ_GEN1_FRAG_LEN, info->len));
483 }
484
485 set_64bit_val(wqe, 16, hdr[0]);
486 dma_wmb(); /* make sure WQE is written before valid bit is set */
487
488 set_64bit_val(wqe, 24, hdr[1]);
489
490 print_hex_dump_debug("PUDA: PUDA SEND WQE", DUMP_PREFIX_OFFSET, 16, 8,
491 wqe, 32, false);
492 irdma_uk_qp_post_wr(&qp->qp_uk);
493 return 0;
494 }
495
496 /**
497 * irdma_puda_send_buf - transmit puda buffer
498 * @rsrc: resource to use for buffer
499 * @buf: puda buffer to transmit
500 */
irdma_puda_send_buf(struct irdma_puda_rsrc * rsrc,struct irdma_puda_buf * buf)501 void irdma_puda_send_buf(struct irdma_puda_rsrc *rsrc,
502 struct irdma_puda_buf *buf)
503 {
504 struct irdma_puda_send_info info;
505 int ret = 0;
506 unsigned long flags;
507
508 spin_lock_irqsave(&rsrc->bufpool_lock, flags);
509 /* if no wqe available or not from a completion and we have
510 * pending buffers, we must queue new buffer
511 */
512 if (!rsrc->tx_wqe_avail_cnt || (buf && !list_empty(&rsrc->txpend))) {
513 list_add_tail(&buf->list, &rsrc->txpend);
514 spin_unlock_irqrestore(&rsrc->bufpool_lock, flags);
515 rsrc->stats_sent_pkt_q++;
516 if (rsrc->type == IRDMA_PUDA_RSRC_TYPE_ILQ)
517 ibdev_dbg(to_ibdev(rsrc->dev),
518 "PUDA: adding to txpend\n");
519 return;
520 }
521 rsrc->tx_wqe_avail_cnt--;
522 /* if we are coming from a completion and have pending buffers
523 * then Get one from pending list
524 */
525 if (!buf) {
526 buf = irdma_puda_get_listbuf(&rsrc->txpend);
527 if (!buf)
528 goto done;
529 }
530
531 info.scratch = buf;
532 info.paddr = buf->mem.pa;
533 info.len = buf->totallen;
534 info.tcplen = buf->tcphlen;
535 info.ipv4 = buf->ipv4;
536
537 if (rsrc->dev->hw_attrs.uk_attrs.hw_rev >= IRDMA_GEN_2) {
538 info.ah_id = buf->ah_id;
539 } else {
540 info.maclen = buf->maclen;
541 info.do_lpb = buf->do_lpb;
542 }
543
544 /* Synch buffer for use by device */
545 dma_sync_single_for_cpu(rsrc->dev->hw->device, buf->mem.pa,
546 buf->mem.size, DMA_BIDIRECTIONAL);
547 ret = irdma_puda_send(&rsrc->qp, &info);
548 if (ret) {
549 rsrc->tx_wqe_avail_cnt++;
550 rsrc->stats_sent_pkt_q++;
551 list_add(&buf->list, &rsrc->txpend);
552 if (rsrc->type == IRDMA_PUDA_RSRC_TYPE_ILQ)
553 ibdev_dbg(to_ibdev(rsrc->dev),
554 "PUDA: adding to puda_send\n");
555 } else {
556 rsrc->stats_pkt_sent++;
557 }
558 done:
559 spin_unlock_irqrestore(&rsrc->bufpool_lock, flags);
560 }
561
562 /**
563 * irdma_puda_qp_setctx - during init, set qp's context
564 * @rsrc: qp's resource
565 */
irdma_puda_qp_setctx(struct irdma_puda_rsrc * rsrc)566 static void irdma_puda_qp_setctx(struct irdma_puda_rsrc *rsrc)
567 {
568 struct irdma_sc_qp *qp = &rsrc->qp;
569 __le64 *qp_ctx = qp->hw_host_ctx;
570
571 set_64bit_val(qp_ctx, 8, qp->sq_pa);
572 set_64bit_val(qp_ctx, 16, qp->rq_pa);
573 set_64bit_val(qp_ctx, 24,
574 FIELD_PREP(IRDMAQPC_RQSIZE, qp->hw_rq_size) |
575 FIELD_PREP(IRDMAQPC_SQSIZE, qp->hw_sq_size));
576 set_64bit_val(qp_ctx, 48,
577 FIELD_PREP(IRDMAQPC_SNDMSS, rsrc->buf_size));
578 set_64bit_val(qp_ctx, 56, 0);
579 if (qp->dev->hw_attrs.uk_attrs.hw_rev == IRDMA_GEN_1)
580 set_64bit_val(qp_ctx, 64, 1);
581 set_64bit_val(qp_ctx, 136,
582 FIELD_PREP(IRDMAQPC_TXCQNUM, rsrc->cq_id) |
583 FIELD_PREP(IRDMAQPC_RXCQNUM, rsrc->cq_id));
584 set_64bit_val(qp_ctx, 144,
585 FIELD_PREP(IRDMAQPC_STAT_INDEX, rsrc->stats_idx));
586 set_64bit_val(qp_ctx, 160,
587 FIELD_PREP(IRDMAQPC_PRIVEN, 1) |
588 FIELD_PREP(IRDMAQPC_USESTATSINSTANCE, rsrc->stats_idx_valid));
589 set_64bit_val(qp_ctx, 168,
590 FIELD_PREP(IRDMAQPC_QPCOMPCTX, (uintptr_t)qp));
591 set_64bit_val(qp_ctx, 176,
592 FIELD_PREP(IRDMAQPC_SQTPHVAL, qp->sq_tph_val) |
593 FIELD_PREP(IRDMAQPC_RQTPHVAL, qp->rq_tph_val) |
594 FIELD_PREP(IRDMAQPC_QSHANDLE, qp->qs_handle));
595
596 print_hex_dump_debug("PUDA: PUDA QP CONTEXT", DUMP_PREFIX_OFFSET, 16,
597 8, qp_ctx, IRDMA_QP_CTX_SIZE, false);
598 }
599
600 /**
601 * irdma_puda_qp_wqe - setup wqe for qp create
602 * @dev: Device
603 * @qp: Resource qp
604 */
irdma_puda_qp_wqe(struct irdma_sc_dev * dev,struct irdma_sc_qp * qp)605 static int irdma_puda_qp_wqe(struct irdma_sc_dev *dev, struct irdma_sc_qp *qp)
606 {
607 struct irdma_sc_cqp *cqp;
608 __le64 *wqe;
609 u64 hdr;
610 struct irdma_ccq_cqe_info compl_info;
611 int status = 0;
612
613 cqp = dev->cqp;
614 wqe = irdma_sc_cqp_get_next_send_wqe(cqp, 0);
615 if (!wqe)
616 return -ENOMEM;
617
618 set_64bit_val(wqe, 16, qp->hw_host_ctx_pa);
619 set_64bit_val(wqe, 40, qp->shadow_area_pa);
620
621 hdr = qp->qp_uk.qp_id |
622 FIELD_PREP(IRDMA_CQPSQ_OPCODE, IRDMA_CQP_OP_CREATE_QP) |
623 FIELD_PREP(IRDMA_CQPSQ_QP_QPTYPE, IRDMA_QP_TYPE_UDA) |
624 FIELD_PREP(IRDMA_CQPSQ_QP_CQNUMVALID, 1) |
625 FIELD_PREP(IRDMA_CQPSQ_QP_NEXTIWSTATE, 2) |
626 FIELD_PREP(IRDMA_CQPSQ_WQEVALID, cqp->polarity);
627 dma_wmb(); /* make sure WQE is written before valid bit is set */
628
629 set_64bit_val(wqe, 24, hdr);
630
631 print_hex_dump_debug("PUDA: PUDA QP CREATE", DUMP_PREFIX_OFFSET, 16,
632 8, wqe, 40, false);
633 irdma_sc_cqp_post_sq(cqp);
634 status = irdma_sc_poll_for_cqp_op_done(dev->cqp, IRDMA_CQP_OP_CREATE_QP,
635 &compl_info);
636
637 return status;
638 }
639
640 /**
641 * irdma_puda_qp_create - create qp for resource
642 * @rsrc: resource to use for buffer
643 */
irdma_puda_qp_create(struct irdma_puda_rsrc * rsrc)644 static int irdma_puda_qp_create(struct irdma_puda_rsrc *rsrc)
645 {
646 struct irdma_sc_qp *qp = &rsrc->qp;
647 struct irdma_qp_uk *ukqp = &qp->qp_uk;
648 int ret = 0;
649 u32 sq_size, rq_size;
650 struct irdma_dma_mem *mem;
651
652 sq_size = rsrc->sq_size * IRDMA_QP_WQE_MIN_SIZE;
653 rq_size = rsrc->rq_size * IRDMA_QP_WQE_MIN_SIZE;
654 rsrc->qpmem.size = ALIGN((sq_size + rq_size + (IRDMA_SHADOW_AREA_SIZE << 3) + IRDMA_QP_CTX_SIZE),
655 IRDMA_HW_PAGE_SIZE);
656 rsrc->qpmem.va = dma_alloc_coherent(rsrc->dev->hw->device,
657 rsrc->qpmem.size, &rsrc->qpmem.pa,
658 GFP_KERNEL);
659 if (!rsrc->qpmem.va)
660 return -ENOMEM;
661
662 mem = &rsrc->qpmem;
663 memset(mem->va, 0, rsrc->qpmem.size);
664 qp->hw_sq_size = irdma_get_encoded_wqe_size(rsrc->sq_size, IRDMA_QUEUE_TYPE_SQ_RQ);
665 qp->hw_rq_size = irdma_get_encoded_wqe_size(rsrc->rq_size, IRDMA_QUEUE_TYPE_SQ_RQ);
666 qp->pd = &rsrc->sc_pd;
667 qp->qp_uk.qp_type = IRDMA_QP_TYPE_UDA;
668 qp->dev = rsrc->dev;
669 qp->qp_uk.back_qp = rsrc;
670 qp->sq_pa = mem->pa;
671 qp->rq_pa = qp->sq_pa + sq_size;
672 qp->vsi = rsrc->vsi;
673 ukqp->sq_base = mem->va;
674 ukqp->rq_base = &ukqp->sq_base[rsrc->sq_size];
675 ukqp->shadow_area = ukqp->rq_base[rsrc->rq_size].elem;
676 ukqp->uk_attrs = &qp->dev->hw_attrs.uk_attrs;
677 qp->shadow_area_pa = qp->rq_pa + rq_size;
678 qp->hw_host_ctx = ukqp->shadow_area + IRDMA_SHADOW_AREA_SIZE;
679 qp->hw_host_ctx_pa = qp->shadow_area_pa + (IRDMA_SHADOW_AREA_SIZE << 3);
680 qp->push_idx = IRDMA_INVALID_PUSH_PAGE_INDEX;
681 ukqp->qp_id = rsrc->qp_id;
682 ukqp->sq_wrtrk_array = rsrc->sq_wrtrk_array;
683 ukqp->rq_wrid_array = rsrc->rq_wrid_array;
684 ukqp->sq_size = rsrc->sq_size;
685 ukqp->rq_size = rsrc->rq_size;
686
687 IRDMA_RING_INIT(ukqp->sq_ring, ukqp->sq_size);
688 IRDMA_RING_INIT(ukqp->initial_ring, ukqp->sq_size);
689 IRDMA_RING_INIT(ukqp->rq_ring, ukqp->rq_size);
690 ukqp->wqe_alloc_db = qp->pd->dev->wqe_alloc_db;
691
692 ret = rsrc->dev->ws_add(qp->vsi, qp->user_pri);
693 if (ret) {
694 dma_free_coherent(rsrc->dev->hw->device, rsrc->qpmem.size,
695 rsrc->qpmem.va, rsrc->qpmem.pa);
696 rsrc->qpmem.va = NULL;
697 return ret;
698 }
699
700 irdma_qp_add_qos(qp);
701 irdma_puda_qp_setctx(rsrc);
702
703 if (rsrc->dev->ceq_valid)
704 ret = irdma_cqp_qp_create_cmd(rsrc->dev, qp);
705 else
706 ret = irdma_puda_qp_wqe(rsrc->dev, qp);
707 if (ret) {
708 irdma_qp_rem_qos(qp);
709 rsrc->dev->ws_remove(qp->vsi, qp->user_pri);
710 dma_free_coherent(rsrc->dev->hw->device, rsrc->qpmem.size,
711 rsrc->qpmem.va, rsrc->qpmem.pa);
712 rsrc->qpmem.va = NULL;
713 }
714
715 return ret;
716 }
717
718 /**
719 * irdma_puda_cq_wqe - setup wqe for CQ create
720 * @dev: Device
721 * @cq: resource for cq
722 */
irdma_puda_cq_wqe(struct irdma_sc_dev * dev,struct irdma_sc_cq * cq)723 static int irdma_puda_cq_wqe(struct irdma_sc_dev *dev, struct irdma_sc_cq *cq)
724 {
725 __le64 *wqe;
726 struct irdma_sc_cqp *cqp;
727 u64 hdr;
728 struct irdma_ccq_cqe_info compl_info;
729 int status = 0;
730
731 cqp = dev->cqp;
732 wqe = irdma_sc_cqp_get_next_send_wqe(cqp, 0);
733 if (!wqe)
734 return -ENOMEM;
735
736 set_64bit_val(wqe, 0, cq->cq_uk.cq_size);
737 set_64bit_val(wqe, 8, (uintptr_t)cq >> 1);
738 set_64bit_val(wqe, 16,
739 FIELD_PREP(IRDMA_CQPSQ_CQ_SHADOW_READ_THRESHOLD, cq->shadow_read_threshold));
740 set_64bit_val(wqe, 32, cq->cq_pa);
741 set_64bit_val(wqe, 40, cq->shadow_area_pa);
742 set_64bit_val(wqe, 56,
743 FIELD_PREP(IRDMA_CQPSQ_TPHVAL, cq->tph_val) |
744 FIELD_PREP(IRDMA_CQPSQ_VSIIDX, cq->vsi->vsi_idx));
745
746 hdr = cq->cq_uk.cq_id |
747 FIELD_PREP(IRDMA_CQPSQ_OPCODE, IRDMA_CQP_OP_CREATE_CQ) |
748 FIELD_PREP(IRDMA_CQPSQ_CQ_CHKOVERFLOW, 1) |
749 FIELD_PREP(IRDMA_CQPSQ_CQ_ENCEQEMASK, 1) |
750 FIELD_PREP(IRDMA_CQPSQ_CQ_CEQIDVALID, 1) |
751 FIELD_PREP(IRDMA_CQPSQ_WQEVALID, cqp->polarity);
752 dma_wmb(); /* make sure WQE is written before valid bit is set */
753
754 set_64bit_val(wqe, 24, hdr);
755
756 print_hex_dump_debug("PUDA: PUDA CREATE CQ", DUMP_PREFIX_OFFSET, 16,
757 8, wqe, IRDMA_CQP_WQE_SIZE * 8, false);
758 irdma_sc_cqp_post_sq(dev->cqp);
759 status = irdma_sc_poll_for_cqp_op_done(dev->cqp, IRDMA_CQP_OP_CREATE_CQ,
760 &compl_info);
761 if (!status) {
762 struct irdma_sc_ceq *ceq = dev->ceq[0];
763
764 if (ceq && ceq->reg_cq)
765 status = irdma_sc_add_cq_ctx(ceq, cq);
766 }
767
768 return status;
769 }
770
771 /**
772 * irdma_puda_cq_create - create cq for resource
773 * @rsrc: resource for which cq to create
774 */
irdma_puda_cq_create(struct irdma_puda_rsrc * rsrc)775 static int irdma_puda_cq_create(struct irdma_puda_rsrc *rsrc)
776 {
777 struct irdma_sc_dev *dev = rsrc->dev;
778 struct irdma_sc_cq *cq = &rsrc->cq;
779 int ret = 0;
780 u32 cqsize;
781 struct irdma_dma_mem *mem;
782 struct irdma_cq_init_info info = {};
783 struct irdma_cq_uk_init_info *init_info = &info.cq_uk_init_info;
784
785 cq->vsi = rsrc->vsi;
786 cqsize = rsrc->cq_size * (sizeof(struct irdma_cqe));
787 rsrc->cqmem.size = ALIGN(cqsize + sizeof(struct irdma_cq_shadow_area),
788 IRDMA_CQ0_ALIGNMENT);
789 rsrc->cqmem.va = dma_alloc_coherent(dev->hw->device, rsrc->cqmem.size,
790 &rsrc->cqmem.pa, GFP_KERNEL);
791 if (!rsrc->cqmem.va)
792 return -ENOMEM;
793
794 mem = &rsrc->cqmem;
795 info.dev = dev;
796 info.type = (rsrc->type == IRDMA_PUDA_RSRC_TYPE_ILQ) ?
797 IRDMA_CQ_TYPE_ILQ : IRDMA_CQ_TYPE_IEQ;
798 info.shadow_read_threshold = rsrc->cq_size >> 2;
799 info.cq_base_pa = mem->pa;
800 info.shadow_area_pa = mem->pa + cqsize;
801 init_info->cq_base = mem->va;
802 init_info->shadow_area = (__le64 *)((u8 *)mem->va + cqsize);
803 init_info->cq_size = rsrc->cq_size;
804 init_info->cq_id = rsrc->cq_id;
805 info.ceqe_mask = true;
806 info.ceq_id_valid = true;
807 info.vsi = rsrc->vsi;
808
809 ret = irdma_sc_cq_init(cq, &info);
810 if (ret)
811 goto error;
812
813 if (rsrc->dev->ceq_valid)
814 ret = irdma_cqp_cq_create_cmd(dev, cq);
815 else
816 ret = irdma_puda_cq_wqe(dev, cq);
817 error:
818 if (ret) {
819 dma_free_coherent(dev->hw->device, rsrc->cqmem.size,
820 rsrc->cqmem.va, rsrc->cqmem.pa);
821 rsrc->cqmem.va = NULL;
822 }
823
824 return ret;
825 }
826
827 /**
828 * irdma_puda_free_qp - free qp for resource
829 * @rsrc: resource for which qp to free
830 */
irdma_puda_free_qp(struct irdma_puda_rsrc * rsrc)831 static void irdma_puda_free_qp(struct irdma_puda_rsrc *rsrc)
832 {
833 int ret;
834 struct irdma_ccq_cqe_info compl_info;
835 struct irdma_sc_dev *dev = rsrc->dev;
836
837 if (rsrc->dev->ceq_valid) {
838 irdma_cqp_qp_destroy_cmd(dev, &rsrc->qp);
839 rsrc->dev->ws_remove(rsrc->qp.vsi, rsrc->qp.user_pri);
840 return;
841 }
842
843 ret = irdma_sc_qp_destroy(&rsrc->qp, 0, false, true, true);
844 if (ret)
845 ibdev_dbg(to_ibdev(dev),
846 "PUDA: error puda qp destroy wqe, status = %d\n",
847 ret);
848 if (!ret) {
849 ret = irdma_sc_poll_for_cqp_op_done(dev->cqp, IRDMA_CQP_OP_DESTROY_QP,
850 &compl_info);
851 if (ret)
852 ibdev_dbg(to_ibdev(dev),
853 "PUDA: error puda qp destroy failed, status = %d\n",
854 ret);
855 }
856 rsrc->dev->ws_remove(rsrc->qp.vsi, rsrc->qp.user_pri);
857 }
858
859 /**
860 * irdma_puda_free_cq - free cq for resource
861 * @rsrc: resource for which cq to free
862 */
irdma_puda_free_cq(struct irdma_puda_rsrc * rsrc)863 static void irdma_puda_free_cq(struct irdma_puda_rsrc *rsrc)
864 {
865 int ret;
866 struct irdma_ccq_cqe_info compl_info;
867 struct irdma_sc_dev *dev = rsrc->dev;
868
869 if (rsrc->dev->ceq_valid) {
870 irdma_cqp_cq_destroy_cmd(dev, &rsrc->cq);
871 return;
872 }
873
874 ret = irdma_sc_cq_destroy(&rsrc->cq, 0, true);
875 if (ret)
876 ibdev_dbg(to_ibdev(dev), "PUDA: error ieq cq destroy\n");
877 if (!ret) {
878 ret = irdma_sc_poll_for_cqp_op_done(dev->cqp, IRDMA_CQP_OP_DESTROY_CQ,
879 &compl_info);
880 if (ret)
881 ibdev_dbg(to_ibdev(dev),
882 "PUDA: error ieq qp destroy done\n");
883 }
884 }
885
886 /**
887 * irdma_puda_dele_rsrc - delete all resources during close
888 * @vsi: VSI structure of device
889 * @type: type of resource to dele
890 * @reset: true if reset chip
891 */
irdma_puda_dele_rsrc(struct irdma_sc_vsi * vsi,enum puda_rsrc_type type,bool reset)892 void irdma_puda_dele_rsrc(struct irdma_sc_vsi *vsi, enum puda_rsrc_type type,
893 bool reset)
894 {
895 struct irdma_sc_dev *dev = vsi->dev;
896 struct irdma_puda_rsrc *rsrc;
897 struct irdma_puda_buf *buf = NULL;
898 struct irdma_puda_buf *nextbuf = NULL;
899 struct irdma_virt_mem *vmem;
900 struct irdma_sc_ceq *ceq;
901
902 ceq = vsi->dev->ceq[0];
903 switch (type) {
904 case IRDMA_PUDA_RSRC_TYPE_ILQ:
905 rsrc = vsi->ilq;
906 vmem = &vsi->ilq_mem;
907 vsi->ilq = NULL;
908 if (ceq && ceq->reg_cq)
909 irdma_sc_remove_cq_ctx(ceq, &rsrc->cq);
910 break;
911 case IRDMA_PUDA_RSRC_TYPE_IEQ:
912 rsrc = vsi->ieq;
913 vmem = &vsi->ieq_mem;
914 vsi->ieq = NULL;
915 if (ceq && ceq->reg_cq)
916 irdma_sc_remove_cq_ctx(ceq, &rsrc->cq);
917 break;
918 default:
919 ibdev_dbg(to_ibdev(dev), "PUDA: error resource type = 0x%x\n",
920 type);
921 return;
922 }
923
924 switch (rsrc->cmpl) {
925 case PUDA_HASH_CRC_COMPLETE:
926 irdma_free_hash_desc(rsrc->hash_desc);
927 fallthrough;
928 case PUDA_QP_CREATED:
929 irdma_qp_rem_qos(&rsrc->qp);
930
931 if (!reset)
932 irdma_puda_free_qp(rsrc);
933
934 dma_free_coherent(dev->hw->device, rsrc->qpmem.size,
935 rsrc->qpmem.va, rsrc->qpmem.pa);
936 rsrc->qpmem.va = NULL;
937 fallthrough;
938 case PUDA_CQ_CREATED:
939 if (!reset)
940 irdma_puda_free_cq(rsrc);
941
942 dma_free_coherent(dev->hw->device, rsrc->cqmem.size,
943 rsrc->cqmem.va, rsrc->cqmem.pa);
944 rsrc->cqmem.va = NULL;
945 break;
946 default:
947 ibdev_dbg(to_ibdev(rsrc->dev), "PUDA: error no resources\n");
948 break;
949 }
950 /* Free all allocated puda buffers for both tx and rx */
951 buf = rsrc->alloclist;
952 while (buf) {
953 nextbuf = buf->next;
954 irdma_puda_dele_buf(dev, buf);
955 buf = nextbuf;
956 rsrc->alloc_buf_count--;
957 }
958
959 kfree(vmem->va);
960 }
961
962 /**
963 * irdma_puda_allocbufs - allocate buffers for resource
964 * @rsrc: resource for buffer allocation
965 * @count: number of buffers to create
966 */
irdma_puda_allocbufs(struct irdma_puda_rsrc * rsrc,u32 count)967 static int irdma_puda_allocbufs(struct irdma_puda_rsrc *rsrc, u32 count)
968 {
969 u32 i;
970 struct irdma_puda_buf *buf;
971 struct irdma_puda_buf *nextbuf;
972
973 for (i = 0; i < count; i++) {
974 buf = irdma_puda_alloc_buf(rsrc->dev, rsrc->buf_size);
975 if (!buf) {
976 rsrc->stats_buf_alloc_fail++;
977 return -ENOMEM;
978 }
979 irdma_puda_ret_bufpool(rsrc, buf);
980 rsrc->alloc_buf_count++;
981 if (!rsrc->alloclist) {
982 rsrc->alloclist = buf;
983 } else {
984 nextbuf = rsrc->alloclist;
985 rsrc->alloclist = buf;
986 buf->next = nextbuf;
987 }
988 }
989
990 rsrc->avail_buf_count = rsrc->alloc_buf_count;
991
992 return 0;
993 }
994
995 /**
996 * irdma_puda_create_rsrc - create resource (ilq or ieq)
997 * @vsi: sc VSI struct
998 * @info: resource information
999 */
irdma_puda_create_rsrc(struct irdma_sc_vsi * vsi,struct irdma_puda_rsrc_info * info)1000 int irdma_puda_create_rsrc(struct irdma_sc_vsi *vsi,
1001 struct irdma_puda_rsrc_info *info)
1002 {
1003 struct irdma_sc_dev *dev = vsi->dev;
1004 int ret = 0;
1005 struct irdma_puda_rsrc *rsrc;
1006 u32 pudasize;
1007 u32 sqwridsize, rqwridsize;
1008 struct irdma_virt_mem *vmem;
1009
1010 info->count = 1;
1011 pudasize = sizeof(struct irdma_puda_rsrc);
1012 sqwridsize = info->sq_size * sizeof(struct irdma_sq_uk_wr_trk_info);
1013 rqwridsize = info->rq_size * 8;
1014 switch (info->type) {
1015 case IRDMA_PUDA_RSRC_TYPE_ILQ:
1016 vmem = &vsi->ilq_mem;
1017 break;
1018 case IRDMA_PUDA_RSRC_TYPE_IEQ:
1019 vmem = &vsi->ieq_mem;
1020 break;
1021 default:
1022 return -EOPNOTSUPP;
1023 }
1024 vmem->size = pudasize + sqwridsize + rqwridsize;
1025 vmem->va = kzalloc(vmem->size, GFP_KERNEL);
1026 if (!vmem->va)
1027 return -ENOMEM;
1028
1029 rsrc = vmem->va;
1030 spin_lock_init(&rsrc->bufpool_lock);
1031 switch (info->type) {
1032 case IRDMA_PUDA_RSRC_TYPE_ILQ:
1033 vsi->ilq = vmem->va;
1034 vsi->ilq_count = info->count;
1035 rsrc->receive = info->receive;
1036 rsrc->xmit_complete = info->xmit_complete;
1037 break;
1038 case IRDMA_PUDA_RSRC_TYPE_IEQ:
1039 vsi->ieq_count = info->count;
1040 vsi->ieq = vmem->va;
1041 rsrc->receive = irdma_ieq_receive;
1042 rsrc->xmit_complete = irdma_ieq_tx_compl;
1043 break;
1044 default:
1045 return -EOPNOTSUPP;
1046 }
1047
1048 rsrc->type = info->type;
1049 rsrc->sq_wrtrk_array = (struct irdma_sq_uk_wr_trk_info *)
1050 ((u8 *)vmem->va + pudasize);
1051 rsrc->rq_wrid_array = (u64 *)((u8 *)vmem->va + pudasize + sqwridsize);
1052 /* Initialize all ieq lists */
1053 INIT_LIST_HEAD(&rsrc->bufpool);
1054 INIT_LIST_HEAD(&rsrc->txpend);
1055
1056 rsrc->tx_wqe_avail_cnt = info->sq_size - 1;
1057 irdma_sc_pd_init(dev, &rsrc->sc_pd, info->pd_id, info->abi_ver);
1058 rsrc->qp_id = info->qp_id;
1059 rsrc->cq_id = info->cq_id;
1060 rsrc->sq_size = info->sq_size;
1061 rsrc->rq_size = info->rq_size;
1062 rsrc->cq_size = info->rq_size + info->sq_size;
1063 if (dev->hw_attrs.uk_attrs.hw_rev >= IRDMA_GEN_2) {
1064 if (rsrc->type == IRDMA_PUDA_RSRC_TYPE_ILQ)
1065 rsrc->cq_size += info->rq_size;
1066 }
1067 rsrc->buf_size = info->buf_size;
1068 rsrc->dev = dev;
1069 rsrc->vsi = vsi;
1070 rsrc->stats_idx = info->stats_idx;
1071 rsrc->stats_idx_valid = info->stats_idx_valid;
1072
1073 ret = irdma_puda_cq_create(rsrc);
1074 if (!ret) {
1075 rsrc->cmpl = PUDA_CQ_CREATED;
1076 ret = irdma_puda_qp_create(rsrc);
1077 }
1078 if (ret) {
1079 ibdev_dbg(to_ibdev(dev),
1080 "PUDA: error qp_create type=%d, status=%d\n",
1081 rsrc->type, ret);
1082 goto error;
1083 }
1084 rsrc->cmpl = PUDA_QP_CREATED;
1085
1086 ret = irdma_puda_allocbufs(rsrc, info->tx_buf_cnt + info->rq_size);
1087 if (ret) {
1088 ibdev_dbg(to_ibdev(dev), "PUDA: error alloc_buf\n");
1089 goto error;
1090 }
1091
1092 rsrc->rxq_invalid_cnt = info->rq_size;
1093 ret = irdma_puda_replenish_rq(rsrc, true);
1094 if (ret)
1095 goto error;
1096
1097 if (info->type == IRDMA_PUDA_RSRC_TYPE_IEQ) {
1098 if (!irdma_init_hash_desc(&rsrc->hash_desc)) {
1099 rsrc->check_crc = true;
1100 rsrc->cmpl = PUDA_HASH_CRC_COMPLETE;
1101 ret = 0;
1102 }
1103 }
1104
1105 irdma_sc_ccq_arm(&rsrc->cq);
1106 return ret;
1107
1108 error:
1109 irdma_puda_dele_rsrc(vsi, info->type, false);
1110
1111 return ret;
1112 }
1113
1114 /**
1115 * irdma_ilq_putback_rcvbuf - ilq buffer to put back on rq
1116 * @qp: ilq's qp resource
1117 * @buf: puda buffer for rcv q
1118 * @wqe_idx: wqe index of completed rcvbuf
1119 */
irdma_ilq_putback_rcvbuf(struct irdma_sc_qp * qp,struct irdma_puda_buf * buf,u32 wqe_idx)1120 static void irdma_ilq_putback_rcvbuf(struct irdma_sc_qp *qp,
1121 struct irdma_puda_buf *buf, u32 wqe_idx)
1122 {
1123 __le64 *wqe;
1124 u64 offset8, offset24;
1125
1126 /* Synch buffer for use by device */
1127 dma_sync_single_for_device(qp->dev->hw->device, buf->mem.pa,
1128 buf->mem.size, DMA_BIDIRECTIONAL);
1129 wqe = qp->qp_uk.rq_base[wqe_idx].elem;
1130 get_64bit_val(wqe, 24, &offset24);
1131 if (qp->dev->hw_attrs.uk_attrs.hw_rev >= IRDMA_GEN_2) {
1132 get_64bit_val(wqe, 8, &offset8);
1133 if (offset24)
1134 offset8 &= ~FIELD_PREP(IRDMAQPSQ_VALID, 1);
1135 else
1136 offset8 |= FIELD_PREP(IRDMAQPSQ_VALID, 1);
1137 set_64bit_val(wqe, 8, offset8);
1138 dma_wmb(); /* make sure WQE is written before valid bit is set */
1139 }
1140 if (offset24)
1141 offset24 = 0;
1142 else
1143 offset24 = FIELD_PREP(IRDMAQPSQ_VALID, 1);
1144
1145 set_64bit_val(wqe, 24, offset24);
1146 }
1147
1148 /**
1149 * irdma_ieq_get_fpdu_len - get length of fpdu with or without marker
1150 * @pfpdu: pointer to fpdu
1151 * @datap: pointer to data in the buffer
1152 * @rcv_seq: seqnum of the data buffer
1153 */
irdma_ieq_get_fpdu_len(struct irdma_pfpdu * pfpdu,u8 * datap,u32 rcv_seq)1154 static u16 irdma_ieq_get_fpdu_len(struct irdma_pfpdu *pfpdu, u8 *datap,
1155 u32 rcv_seq)
1156 {
1157 u32 marker_seq, end_seq, blk_start;
1158 u8 marker_len = pfpdu->marker_len;
1159 u16 total_len = 0;
1160 u16 fpdu_len;
1161
1162 blk_start = (pfpdu->rcv_start_seq - rcv_seq) & (IRDMA_MRK_BLK_SZ - 1);
1163 if (!blk_start) {
1164 total_len = marker_len;
1165 marker_seq = rcv_seq + IRDMA_MRK_BLK_SZ;
1166 if (marker_len && *(u32 *)datap)
1167 return 0;
1168 } else {
1169 marker_seq = rcv_seq + blk_start;
1170 }
1171
1172 datap += total_len;
1173 fpdu_len = ntohs(*(__be16 *)datap);
1174 fpdu_len += IRDMA_IEQ_MPA_FRAMING;
1175 fpdu_len = (fpdu_len + 3) & 0xfffc;
1176
1177 if (fpdu_len > pfpdu->max_fpdu_data)
1178 return 0;
1179
1180 total_len += fpdu_len;
1181 end_seq = rcv_seq + total_len;
1182 while ((int)(marker_seq - end_seq) < 0) {
1183 total_len += marker_len;
1184 end_seq += marker_len;
1185 marker_seq += IRDMA_MRK_BLK_SZ;
1186 }
1187
1188 return total_len;
1189 }
1190
1191 /**
1192 * irdma_ieq_copy_to_txbuf - copydata from rcv buf to tx buf
1193 * @buf: rcv buffer with partial
1194 * @txbuf: tx buffer for sending back
1195 * @buf_offset: rcv buffer offset to copy from
1196 * @txbuf_offset: at offset in tx buf to copy
1197 * @len: length of data to copy
1198 */
irdma_ieq_copy_to_txbuf(struct irdma_puda_buf * buf,struct irdma_puda_buf * txbuf,u16 buf_offset,u32 txbuf_offset,u32 len)1199 static void irdma_ieq_copy_to_txbuf(struct irdma_puda_buf *buf,
1200 struct irdma_puda_buf *txbuf,
1201 u16 buf_offset, u32 txbuf_offset, u32 len)
1202 {
1203 void *mem1 = (u8 *)buf->mem.va + buf_offset;
1204 void *mem2 = (u8 *)txbuf->mem.va + txbuf_offset;
1205
1206 memcpy(mem2, mem1, len);
1207 }
1208
1209 /**
1210 * irdma_ieq_setup_tx_buf - setup tx buffer for partial handling
1211 * @buf: reeive buffer with partial
1212 * @txbuf: buffer to prepare
1213 */
irdma_ieq_setup_tx_buf(struct irdma_puda_buf * buf,struct irdma_puda_buf * txbuf)1214 static void irdma_ieq_setup_tx_buf(struct irdma_puda_buf *buf,
1215 struct irdma_puda_buf *txbuf)
1216 {
1217 txbuf->tcphlen = buf->tcphlen;
1218 txbuf->ipv4 = buf->ipv4;
1219
1220 if (buf->vsi->dev->hw_attrs.uk_attrs.hw_rev >= IRDMA_GEN_2) {
1221 txbuf->hdrlen = txbuf->tcphlen;
1222 irdma_ieq_copy_to_txbuf(buf, txbuf, IRDMA_TCP_OFFSET, 0,
1223 txbuf->hdrlen);
1224 } else {
1225 txbuf->maclen = buf->maclen;
1226 txbuf->hdrlen = buf->hdrlen;
1227 irdma_ieq_copy_to_txbuf(buf, txbuf, 0, 0, buf->hdrlen);
1228 }
1229 }
1230
1231 /**
1232 * irdma_ieq_check_first_buf - check if rcv buffer's seq is in range
1233 * @buf: receive exception buffer
1234 * @fps: first partial sequence number
1235 */
irdma_ieq_check_first_buf(struct irdma_puda_buf * buf,u32 fps)1236 static void irdma_ieq_check_first_buf(struct irdma_puda_buf *buf, u32 fps)
1237 {
1238 u32 offset;
1239
1240 if (buf->seqnum < fps) {
1241 offset = fps - buf->seqnum;
1242 if (offset > buf->datalen)
1243 return;
1244 buf->data += offset;
1245 buf->datalen -= (u16)offset;
1246 buf->seqnum = fps;
1247 }
1248 }
1249
1250 /**
1251 * irdma_ieq_compl_pfpdu - write txbuf with full fpdu
1252 * @ieq: ieq resource
1253 * @rxlist: ieq's received buffer list
1254 * @pbufl: temporary list for buffers for fpddu
1255 * @txbuf: tx buffer for fpdu
1256 * @fpdu_len: total length of fpdu
1257 */
irdma_ieq_compl_pfpdu(struct irdma_puda_rsrc * ieq,struct list_head * rxlist,struct list_head * pbufl,struct irdma_puda_buf * txbuf,u16 fpdu_len)1258 static void irdma_ieq_compl_pfpdu(struct irdma_puda_rsrc *ieq,
1259 struct list_head *rxlist,
1260 struct list_head *pbufl,
1261 struct irdma_puda_buf *txbuf, u16 fpdu_len)
1262 {
1263 struct irdma_puda_buf *buf;
1264 u32 nextseqnum;
1265 u16 txoffset, bufoffset;
1266
1267 buf = irdma_puda_get_listbuf(pbufl);
1268 if (!buf)
1269 return;
1270
1271 nextseqnum = buf->seqnum + fpdu_len;
1272 irdma_ieq_setup_tx_buf(buf, txbuf);
1273 if (buf->vsi->dev->hw_attrs.uk_attrs.hw_rev >= IRDMA_GEN_2) {
1274 txoffset = txbuf->hdrlen;
1275 txbuf->totallen = txbuf->hdrlen + fpdu_len;
1276 txbuf->data = (u8 *)txbuf->mem.va + txoffset;
1277 } else {
1278 txoffset = buf->hdrlen;
1279 txbuf->totallen = buf->hdrlen + fpdu_len;
1280 txbuf->data = (u8 *)txbuf->mem.va + buf->hdrlen;
1281 }
1282 bufoffset = (u16)(buf->data - (u8 *)buf->mem.va);
1283
1284 do {
1285 if (buf->datalen >= fpdu_len) {
1286 /* copied full fpdu */
1287 irdma_ieq_copy_to_txbuf(buf, txbuf, bufoffset, txoffset,
1288 fpdu_len);
1289 buf->datalen -= fpdu_len;
1290 buf->data += fpdu_len;
1291 buf->seqnum = nextseqnum;
1292 break;
1293 }
1294 /* copy partial fpdu */
1295 irdma_ieq_copy_to_txbuf(buf, txbuf, bufoffset, txoffset,
1296 buf->datalen);
1297 txoffset += buf->datalen;
1298 fpdu_len -= buf->datalen;
1299 irdma_puda_ret_bufpool(ieq, buf);
1300 buf = irdma_puda_get_listbuf(pbufl);
1301 if (!buf)
1302 return;
1303
1304 bufoffset = (u16)(buf->data - (u8 *)buf->mem.va);
1305 } while (1);
1306
1307 /* last buffer on the list*/
1308 if (buf->datalen)
1309 list_add(&buf->list, rxlist);
1310 else
1311 irdma_puda_ret_bufpool(ieq, buf);
1312 }
1313
1314 /**
1315 * irdma_ieq_create_pbufl - create buffer list for single fpdu
1316 * @pfpdu: pointer to fpdu
1317 * @rxlist: resource list for receive ieq buffes
1318 * @pbufl: temp. list for buffers for fpddu
1319 * @buf: first receive buffer
1320 * @fpdu_len: total length of fpdu
1321 */
irdma_ieq_create_pbufl(struct irdma_pfpdu * pfpdu,struct list_head * rxlist,struct list_head * pbufl,struct irdma_puda_buf * buf,u16 fpdu_len)1322 static int irdma_ieq_create_pbufl(struct irdma_pfpdu *pfpdu,
1323 struct list_head *rxlist,
1324 struct list_head *pbufl,
1325 struct irdma_puda_buf *buf, u16 fpdu_len)
1326 {
1327 int status = 0;
1328 struct irdma_puda_buf *nextbuf;
1329 u32 nextseqnum;
1330 u16 plen = fpdu_len - buf->datalen;
1331 bool done = false;
1332
1333 nextseqnum = buf->seqnum + buf->datalen;
1334 do {
1335 nextbuf = irdma_puda_get_listbuf(rxlist);
1336 if (!nextbuf) {
1337 status = -ENOBUFS;
1338 break;
1339 }
1340 list_add_tail(&nextbuf->list, pbufl);
1341 if (nextbuf->seqnum != nextseqnum) {
1342 pfpdu->bad_seq_num++;
1343 status = -ERANGE;
1344 break;
1345 }
1346 if (nextbuf->datalen >= plen) {
1347 done = true;
1348 } else {
1349 plen -= nextbuf->datalen;
1350 nextseqnum = nextbuf->seqnum + nextbuf->datalen;
1351 }
1352
1353 } while (!done);
1354
1355 return status;
1356 }
1357
1358 /**
1359 * irdma_ieq_handle_partial - process partial fpdu buffer
1360 * @ieq: ieq resource
1361 * @pfpdu: partial management per user qp
1362 * @buf: receive buffer
1363 * @fpdu_len: fpdu len in the buffer
1364 */
irdma_ieq_handle_partial(struct irdma_puda_rsrc * ieq,struct irdma_pfpdu * pfpdu,struct irdma_puda_buf * buf,u16 fpdu_len)1365 static int irdma_ieq_handle_partial(struct irdma_puda_rsrc *ieq,
1366 struct irdma_pfpdu *pfpdu,
1367 struct irdma_puda_buf *buf, u16 fpdu_len)
1368 {
1369 int status = 0;
1370 u8 *crcptr;
1371 u32 mpacrc;
1372 u32 seqnum = buf->seqnum;
1373 struct list_head pbufl; /* partial buffer list */
1374 struct irdma_puda_buf *txbuf = NULL;
1375 struct list_head *rxlist = &pfpdu->rxlist;
1376
1377 ieq->partials_handled++;
1378
1379 INIT_LIST_HEAD(&pbufl);
1380 list_add(&buf->list, &pbufl);
1381
1382 status = irdma_ieq_create_pbufl(pfpdu, rxlist, &pbufl, buf, fpdu_len);
1383 if (status)
1384 goto error;
1385
1386 txbuf = irdma_puda_get_bufpool(ieq);
1387 if (!txbuf) {
1388 pfpdu->no_tx_bufs++;
1389 status = -ENOBUFS;
1390 goto error;
1391 }
1392
1393 irdma_ieq_compl_pfpdu(ieq, rxlist, &pbufl, txbuf, fpdu_len);
1394 irdma_ieq_update_tcpip_info(txbuf, fpdu_len, seqnum);
1395
1396 crcptr = txbuf->data + fpdu_len - 4;
1397 mpacrc = *(u32 *)crcptr;
1398 if (ieq->check_crc) {
1399 status = irdma_ieq_check_mpacrc(ieq->hash_desc, txbuf->data,
1400 (fpdu_len - 4), mpacrc);
1401 if (status) {
1402 ibdev_dbg(to_ibdev(ieq->dev), "IEQ: error bad crc\n");
1403 goto error;
1404 }
1405 }
1406
1407 print_hex_dump_debug("IEQ: IEQ TX BUFFER", DUMP_PREFIX_OFFSET, 16, 8,
1408 txbuf->mem.va, txbuf->totallen, false);
1409 if (ieq->dev->hw_attrs.uk_attrs.hw_rev >= IRDMA_GEN_2)
1410 txbuf->ah_id = pfpdu->ah->ah_info.ah_idx;
1411 txbuf->do_lpb = true;
1412 irdma_puda_send_buf(ieq, txbuf);
1413 pfpdu->rcv_nxt = seqnum + fpdu_len;
1414 return status;
1415
1416 error:
1417 while (!list_empty(&pbufl)) {
1418 buf = list_last_entry(&pbufl, struct irdma_puda_buf, list);
1419 list_move(&buf->list, rxlist);
1420 }
1421 if (txbuf)
1422 irdma_puda_ret_bufpool(ieq, txbuf);
1423
1424 return status;
1425 }
1426
1427 /**
1428 * irdma_ieq_process_buf - process buffer rcvd for ieq
1429 * @ieq: ieq resource
1430 * @pfpdu: partial management per user qp
1431 * @buf: receive buffer
1432 */
irdma_ieq_process_buf(struct irdma_puda_rsrc * ieq,struct irdma_pfpdu * pfpdu,struct irdma_puda_buf * buf)1433 static int irdma_ieq_process_buf(struct irdma_puda_rsrc *ieq,
1434 struct irdma_pfpdu *pfpdu,
1435 struct irdma_puda_buf *buf)
1436 {
1437 u16 fpdu_len = 0;
1438 u16 datalen = buf->datalen;
1439 u8 *datap = buf->data;
1440 u8 *crcptr;
1441 u16 ioffset = 0;
1442 u32 mpacrc;
1443 u32 seqnum = buf->seqnum;
1444 u16 len = 0;
1445 u16 full = 0;
1446 bool partial = false;
1447 struct irdma_puda_buf *txbuf;
1448 struct list_head *rxlist = &pfpdu->rxlist;
1449 int ret = 0;
1450
1451 ioffset = (u16)(buf->data - (u8 *)buf->mem.va);
1452 while (datalen) {
1453 fpdu_len = irdma_ieq_get_fpdu_len(pfpdu, datap, buf->seqnum);
1454 if (!fpdu_len) {
1455 ibdev_dbg(to_ibdev(ieq->dev),
1456 "IEQ: error bad fpdu len\n");
1457 list_add(&buf->list, rxlist);
1458 return -EINVAL;
1459 }
1460
1461 if (datalen < fpdu_len) {
1462 partial = true;
1463 break;
1464 }
1465 crcptr = datap + fpdu_len - 4;
1466 mpacrc = *(u32 *)crcptr;
1467 if (ieq->check_crc)
1468 ret = irdma_ieq_check_mpacrc(ieq->hash_desc, datap,
1469 fpdu_len - 4, mpacrc);
1470 if (ret) {
1471 list_add(&buf->list, rxlist);
1472 ibdev_dbg(to_ibdev(ieq->dev),
1473 "ERR: IRDMA_ERR_MPA_CRC\n");
1474 return -EINVAL;
1475 }
1476 full++;
1477 pfpdu->fpdu_processed++;
1478 ieq->fpdu_processed++;
1479 datap += fpdu_len;
1480 len += fpdu_len;
1481 datalen -= fpdu_len;
1482 }
1483 if (full) {
1484 /* copy full pdu's in the txbuf and send them out */
1485 txbuf = irdma_puda_get_bufpool(ieq);
1486 if (!txbuf) {
1487 pfpdu->no_tx_bufs++;
1488 list_add(&buf->list, rxlist);
1489 return -ENOBUFS;
1490 }
1491 /* modify txbuf's buffer header */
1492 irdma_ieq_setup_tx_buf(buf, txbuf);
1493 /* copy full fpdu's to new buffer */
1494 if (ieq->dev->hw_attrs.uk_attrs.hw_rev >= IRDMA_GEN_2) {
1495 irdma_ieq_copy_to_txbuf(buf, txbuf, ioffset,
1496 txbuf->hdrlen, len);
1497 txbuf->totallen = txbuf->hdrlen + len;
1498 txbuf->ah_id = pfpdu->ah->ah_info.ah_idx;
1499 } else {
1500 irdma_ieq_copy_to_txbuf(buf, txbuf, ioffset,
1501 buf->hdrlen, len);
1502 txbuf->totallen = buf->hdrlen + len;
1503 }
1504 irdma_ieq_update_tcpip_info(txbuf, len, buf->seqnum);
1505 print_hex_dump_debug("IEQ: IEQ TX BUFFER", DUMP_PREFIX_OFFSET,
1506 16, 8, txbuf->mem.va, txbuf->totallen,
1507 false);
1508 txbuf->do_lpb = true;
1509 irdma_puda_send_buf(ieq, txbuf);
1510
1511 if (!datalen) {
1512 pfpdu->rcv_nxt = buf->seqnum + len;
1513 irdma_puda_ret_bufpool(ieq, buf);
1514 return 0;
1515 }
1516 buf->data = datap;
1517 buf->seqnum = seqnum + len;
1518 buf->datalen = datalen;
1519 pfpdu->rcv_nxt = buf->seqnum;
1520 }
1521 if (partial)
1522 return irdma_ieq_handle_partial(ieq, pfpdu, buf, fpdu_len);
1523
1524 return 0;
1525 }
1526
1527 /**
1528 * irdma_ieq_process_fpdus - process fpdu's buffers on its list
1529 * @qp: qp for which partial fpdus
1530 * @ieq: ieq resource
1531 */
irdma_ieq_process_fpdus(struct irdma_sc_qp * qp,struct irdma_puda_rsrc * ieq)1532 void irdma_ieq_process_fpdus(struct irdma_sc_qp *qp,
1533 struct irdma_puda_rsrc *ieq)
1534 {
1535 struct irdma_pfpdu *pfpdu = &qp->pfpdu;
1536 struct list_head *rxlist = &pfpdu->rxlist;
1537 struct irdma_puda_buf *buf;
1538 int status;
1539
1540 do {
1541 if (list_empty(rxlist))
1542 break;
1543 buf = irdma_puda_get_listbuf(rxlist);
1544 if (!buf) {
1545 ibdev_dbg(to_ibdev(ieq->dev), "IEQ: error no buf\n");
1546 break;
1547 }
1548 if (buf->seqnum != pfpdu->rcv_nxt) {
1549 /* This could be out of order or missing packet */
1550 pfpdu->out_of_order++;
1551 list_add(&buf->list, rxlist);
1552 break;
1553 }
1554 /* keep processing buffers from the head of the list */
1555 status = irdma_ieq_process_buf(ieq, pfpdu, buf);
1556 if (status == -EINVAL) {
1557 pfpdu->mpa_crc_err = true;
1558 while (!list_empty(rxlist)) {
1559 buf = irdma_puda_get_listbuf(rxlist);
1560 irdma_puda_ret_bufpool(ieq, buf);
1561 pfpdu->crc_err++;
1562 ieq->crc_err++;
1563 }
1564 /* create CQP for AE */
1565 irdma_ieq_mpa_crc_ae(ieq->dev, qp);
1566 }
1567 } while (!status);
1568 }
1569
1570 /**
1571 * irdma_ieq_create_ah - create an address handle for IEQ
1572 * @qp: qp pointer
1573 * @buf: buf received on IEQ used to create AH
1574 */
irdma_ieq_create_ah(struct irdma_sc_qp * qp,struct irdma_puda_buf * buf)1575 static int irdma_ieq_create_ah(struct irdma_sc_qp *qp, struct irdma_puda_buf *buf)
1576 {
1577 struct irdma_ah_info ah_info = {};
1578
1579 qp->pfpdu.ah_buf = buf;
1580 irdma_puda_ieq_get_ah_info(qp, &ah_info);
1581 return irdma_puda_create_ah(qp->vsi->dev, &ah_info, false,
1582 IRDMA_PUDA_RSRC_TYPE_IEQ, qp,
1583 &qp->pfpdu.ah);
1584 }
1585
1586 /**
1587 * irdma_ieq_handle_exception - handle qp's exception
1588 * @ieq: ieq resource
1589 * @qp: qp receiving excpetion
1590 * @buf: receive buffer
1591 */
irdma_ieq_handle_exception(struct irdma_puda_rsrc * ieq,struct irdma_sc_qp * qp,struct irdma_puda_buf * buf)1592 static void irdma_ieq_handle_exception(struct irdma_puda_rsrc *ieq,
1593 struct irdma_sc_qp *qp,
1594 struct irdma_puda_buf *buf)
1595 {
1596 struct irdma_pfpdu *pfpdu = &qp->pfpdu;
1597 u32 *hw_host_ctx = (u32 *)qp->hw_host_ctx;
1598 u32 rcv_wnd = hw_host_ctx[23];
1599 /* first partial seq # in q2 */
1600 u32 fps = *(u32 *)(qp->q2_buf + Q2_FPSN_OFFSET);
1601 struct list_head *rxlist = &pfpdu->rxlist;
1602 unsigned long flags = 0;
1603 u8 hw_rev = qp->dev->hw_attrs.uk_attrs.hw_rev;
1604
1605 print_hex_dump_debug("IEQ: IEQ RX BUFFER", DUMP_PREFIX_OFFSET, 16, 8,
1606 buf->mem.va, buf->totallen, false);
1607
1608 spin_lock_irqsave(&pfpdu->lock, flags);
1609 pfpdu->total_ieq_bufs++;
1610 if (pfpdu->mpa_crc_err) {
1611 pfpdu->crc_err++;
1612 goto error;
1613 }
1614 if (pfpdu->mode && fps != pfpdu->fps) {
1615 /* clean up qp as it is new partial sequence */
1616 irdma_ieq_cleanup_qp(ieq, qp);
1617 ibdev_dbg(to_ibdev(ieq->dev), "IEQ: restarting new partial\n");
1618 pfpdu->mode = false;
1619 }
1620
1621 if (!pfpdu->mode) {
1622 print_hex_dump_debug("IEQ: Q2 BUFFER", DUMP_PREFIX_OFFSET, 16,
1623 8, (u64 *)qp->q2_buf, 128, false);
1624 /* First_Partial_Sequence_Number check */
1625 pfpdu->rcv_nxt = fps;
1626 pfpdu->fps = fps;
1627 pfpdu->mode = true;
1628 pfpdu->max_fpdu_data = (buf->ipv4) ?
1629 (ieq->vsi->mtu - IRDMA_MTU_TO_MSS_IPV4) :
1630 (ieq->vsi->mtu - IRDMA_MTU_TO_MSS_IPV6);
1631 pfpdu->pmode_count++;
1632 ieq->pmode_count++;
1633 INIT_LIST_HEAD(rxlist);
1634 irdma_ieq_check_first_buf(buf, fps);
1635 }
1636
1637 if (!(rcv_wnd >= (buf->seqnum - pfpdu->rcv_nxt))) {
1638 pfpdu->bad_seq_num++;
1639 ieq->bad_seq_num++;
1640 goto error;
1641 }
1642
1643 if (!list_empty(rxlist)) {
1644 if (buf->seqnum != pfpdu->nextseqnum) {
1645 irdma_send_ieq_ack(qp);
1646 /* throw away out-of-order, duplicates*/
1647 goto error;
1648 }
1649 }
1650 /* Insert buf before head */
1651 list_add_tail(&buf->list, rxlist);
1652 pfpdu->nextseqnum = buf->seqnum + buf->datalen;
1653 pfpdu->lastrcv_buf = buf;
1654 if (hw_rev >= IRDMA_GEN_2 && !pfpdu->ah) {
1655 irdma_ieq_create_ah(qp, buf);
1656 if (!pfpdu->ah)
1657 goto error;
1658 goto exit;
1659 }
1660 if (hw_rev == IRDMA_GEN_1)
1661 irdma_ieq_process_fpdus(qp, ieq);
1662 else if (pfpdu->ah && pfpdu->ah->ah_info.ah_valid)
1663 irdma_ieq_process_fpdus(qp, ieq);
1664 exit:
1665 spin_unlock_irqrestore(&pfpdu->lock, flags);
1666
1667 return;
1668
1669 error:
1670 irdma_puda_ret_bufpool(ieq, buf);
1671 spin_unlock_irqrestore(&pfpdu->lock, flags);
1672 }
1673
1674 /**
1675 * irdma_ieq_receive - received exception buffer
1676 * @vsi: VSI of device
1677 * @buf: exception buffer received
1678 */
irdma_ieq_receive(struct irdma_sc_vsi * vsi,struct irdma_puda_buf * buf)1679 static void irdma_ieq_receive(struct irdma_sc_vsi *vsi,
1680 struct irdma_puda_buf *buf)
1681 {
1682 struct irdma_puda_rsrc *ieq = vsi->ieq;
1683 struct irdma_sc_qp *qp = NULL;
1684 u32 wqe_idx = ieq->compl_rxwqe_idx;
1685
1686 qp = irdma_ieq_get_qp(vsi->dev, buf);
1687 if (!qp) {
1688 ieq->stats_bad_qp_id++;
1689 irdma_puda_ret_bufpool(ieq, buf);
1690 } else {
1691 irdma_ieq_handle_exception(ieq, qp, buf);
1692 }
1693 /*
1694 * ieq->rx_wqe_idx is used by irdma_puda_replenish_rq()
1695 * on which wqe_idx to start replenish rq
1696 */
1697 if (!ieq->rxq_invalid_cnt)
1698 ieq->rx_wqe_idx = wqe_idx;
1699 ieq->rxq_invalid_cnt++;
1700 }
1701
1702 /**
1703 * irdma_ieq_tx_compl - put back after sending completed exception buffer
1704 * @vsi: sc VSI struct
1705 * @sqwrid: pointer to puda buffer
1706 */
irdma_ieq_tx_compl(struct irdma_sc_vsi * vsi,void * sqwrid)1707 static void irdma_ieq_tx_compl(struct irdma_sc_vsi *vsi, void *sqwrid)
1708 {
1709 struct irdma_puda_rsrc *ieq = vsi->ieq;
1710 struct irdma_puda_buf *buf = sqwrid;
1711
1712 irdma_puda_ret_bufpool(ieq, buf);
1713 }
1714
1715 /**
1716 * irdma_ieq_cleanup_qp - qp is being destroyed
1717 * @ieq: ieq resource
1718 * @qp: all pending fpdu buffers
1719 */
irdma_ieq_cleanup_qp(struct irdma_puda_rsrc * ieq,struct irdma_sc_qp * qp)1720 void irdma_ieq_cleanup_qp(struct irdma_puda_rsrc *ieq, struct irdma_sc_qp *qp)
1721 {
1722 struct irdma_puda_buf *buf;
1723 struct irdma_pfpdu *pfpdu = &qp->pfpdu;
1724 struct list_head *rxlist = &pfpdu->rxlist;
1725
1726 if (qp->pfpdu.ah) {
1727 irdma_puda_free_ah(ieq->dev, qp->pfpdu.ah);
1728 qp->pfpdu.ah = NULL;
1729 qp->pfpdu.ah_buf = NULL;
1730 }
1731
1732 if (!pfpdu->mode)
1733 return;
1734
1735 while (!list_empty(rxlist)) {
1736 buf = irdma_puda_get_listbuf(rxlist);
1737 irdma_puda_ret_bufpool(ieq, buf);
1738 }
1739 }
1740