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0a7fb11c | 1 | /* QLogic qed NIC Driver |
e8f1cb50 | 2 | * Copyright (c) 2015-2017 QLogic Corporation |
0a7fb11c | 3 | * |
e8f1cb50 MY |
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: | |
0a7fb11c | 9 | * |
e8f1cb50 MY |
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. | |
0a7fb11c YM |
31 | */ |
32 | ||
33 | #include <linux/types.h> | |
34 | #include <asm/byteorder.h> | |
35 | #include <linux/dma-mapping.h> | |
36 | #include <linux/if_vlan.h> | |
37 | #include <linux/kernel.h> | |
38 | #include <linux/pci.h> | |
39 | #include <linux/slab.h> | |
40 | #include <linux/stddef.h> | |
41 | #include <linux/version.h> | |
42 | #include <linux/workqueue.h> | |
43 | #include <net/ipv6.h> | |
44 | #include <linux/bitops.h> | |
45 | #include <linux/delay.h> | |
46 | #include <linux/errno.h> | |
47 | #include <linux/etherdevice.h> | |
48 | #include <linux/io.h> | |
49 | #include <linux/list.h> | |
50 | #include <linux/mutex.h> | |
51 | #include <linux/spinlock.h> | |
52 | #include <linux/string.h> | |
53 | #include <linux/qed/qed_ll2_if.h> | |
54 | #include "qed.h" | |
55 | #include "qed_cxt.h" | |
56 | #include "qed_dev_api.h" | |
57 | #include "qed_hsi.h" | |
58 | #include "qed_hw.h" | |
59 | #include "qed_int.h" | |
60 | #include "qed_ll2.h" | |
61 | #include "qed_mcp.h" | |
1d6cff4f | 62 | #include "qed_ooo.h" |
0a7fb11c YM |
63 | #include "qed_reg_addr.h" |
64 | #include "qed_sp.h" | |
0189efb8 | 65 | #include "qed_roce.h" |
0a7fb11c YM |
66 | |
67 | #define QED_LL2_RX_REGISTERED(ll2) ((ll2)->rx_queue.b_cb_registred) | |
68 | #define QED_LL2_TX_REGISTERED(ll2) ((ll2)->tx_queue.b_cb_registred) | |
69 | ||
70 | #define QED_LL2_TX_SIZE (256) | |
71 | #define QED_LL2_RX_SIZE (4096) | |
72 | ||
73 | struct qed_cb_ll2_info { | |
74 | int rx_cnt; | |
75 | u32 rx_size; | |
76 | u8 handle; | |
77 | bool frags_mapped; | |
78 | ||
79 | /* Lock protecting LL2 buffer lists in sleepless context */ | |
80 | spinlock_t lock; | |
81 | struct list_head list; | |
82 | ||
83 | const struct qed_ll2_cb_ops *cbs; | |
84 | void *cb_cookie; | |
85 | }; | |
86 | ||
87 | struct qed_ll2_buffer { | |
88 | struct list_head list; | |
89 | void *data; | |
90 | dma_addr_t phys_addr; | |
91 | }; | |
92 | ||
93 | static void qed_ll2b_complete_tx_packet(struct qed_hwfn *p_hwfn, | |
94 | u8 connection_handle, | |
95 | void *cookie, | |
96 | dma_addr_t first_frag_addr, | |
97 | bool b_last_fragment, | |
98 | bool b_last_packet) | |
99 | { | |
100 | struct qed_dev *cdev = p_hwfn->cdev; | |
101 | struct sk_buff *skb = cookie; | |
102 | ||
103 | /* All we need to do is release the mapping */ | |
104 | dma_unmap_single(&p_hwfn->cdev->pdev->dev, first_frag_addr, | |
105 | skb_headlen(skb), DMA_TO_DEVICE); | |
106 | ||
107 | if (cdev->ll2->cbs && cdev->ll2->cbs->tx_cb) | |
108 | cdev->ll2->cbs->tx_cb(cdev->ll2->cb_cookie, skb, | |
109 | b_last_fragment); | |
110 | ||
111 | if (cdev->ll2->frags_mapped) | |
112 | /* Case where mapped frags were received, need to | |
113 | * free skb with nr_frags marked as 0 | |
114 | */ | |
115 | skb_shinfo(skb)->nr_frags = 0; | |
116 | ||
117 | dev_kfree_skb_any(skb); | |
118 | } | |
119 | ||
120 | static int qed_ll2_alloc_buffer(struct qed_dev *cdev, | |
121 | u8 **data, dma_addr_t *phys_addr) | |
122 | { | |
123 | *data = kmalloc(cdev->ll2->rx_size, GFP_ATOMIC); | |
124 | if (!(*data)) { | |
125 | DP_INFO(cdev, "Failed to allocate LL2 buffer data\n"); | |
126 | return -ENOMEM; | |
127 | } | |
128 | ||
129 | *phys_addr = dma_map_single(&cdev->pdev->dev, | |
130 | ((*data) + NET_SKB_PAD), | |
131 | cdev->ll2->rx_size, DMA_FROM_DEVICE); | |
132 | if (dma_mapping_error(&cdev->pdev->dev, *phys_addr)) { | |
133 | DP_INFO(cdev, "Failed to map LL2 buffer data\n"); | |
134 | kfree((*data)); | |
135 | return -ENOMEM; | |
136 | } | |
137 | ||
138 | return 0; | |
139 | } | |
140 | ||
141 | static int qed_ll2_dealloc_buffer(struct qed_dev *cdev, | |
142 | struct qed_ll2_buffer *buffer) | |
143 | { | |
144 | spin_lock_bh(&cdev->ll2->lock); | |
145 | ||
146 | dma_unmap_single(&cdev->pdev->dev, buffer->phys_addr, | |
147 | cdev->ll2->rx_size, DMA_FROM_DEVICE); | |
148 | kfree(buffer->data); | |
149 | list_del(&buffer->list); | |
150 | ||
151 | cdev->ll2->rx_cnt--; | |
152 | if (!cdev->ll2->rx_cnt) | |
153 | DP_INFO(cdev, "All LL2 entries were removed\n"); | |
154 | ||
155 | spin_unlock_bh(&cdev->ll2->lock); | |
156 | ||
157 | return 0; | |
158 | } | |
159 | ||
160 | static void qed_ll2_kill_buffers(struct qed_dev *cdev) | |
161 | { | |
162 | struct qed_ll2_buffer *buffer, *tmp_buffer; | |
163 | ||
164 | list_for_each_entry_safe(buffer, tmp_buffer, &cdev->ll2->list, list) | |
165 | qed_ll2_dealloc_buffer(cdev, buffer); | |
166 | } | |
167 | ||
8c93beaf YM |
168 | static void qed_ll2b_complete_rx_packet(struct qed_hwfn *p_hwfn, |
169 | u8 connection_handle, | |
170 | struct qed_ll2_rx_packet *p_pkt, | |
171 | struct core_rx_fast_path_cqe *p_cqe, | |
172 | bool b_last_packet) | |
0a7fb11c YM |
173 | { |
174 | u16 packet_length = le16_to_cpu(p_cqe->packet_length); | |
175 | struct qed_ll2_buffer *buffer = p_pkt->cookie; | |
176 | struct qed_dev *cdev = p_hwfn->cdev; | |
177 | u16 vlan = le16_to_cpu(p_cqe->vlan); | |
178 | u32 opaque_data_0, opaque_data_1; | |
179 | u8 pad = p_cqe->placement_offset; | |
180 | dma_addr_t new_phys_addr; | |
181 | struct sk_buff *skb; | |
182 | bool reuse = false; | |
183 | int rc = -EINVAL; | |
184 | u8 *new_data; | |
185 | ||
186 | opaque_data_0 = le32_to_cpu(p_cqe->opaque_data.data[0]); | |
187 | opaque_data_1 = le32_to_cpu(p_cqe->opaque_data.data[1]); | |
188 | ||
189 | DP_VERBOSE(p_hwfn, | |
190 | (NETIF_MSG_RX_STATUS | QED_MSG_STORAGE | NETIF_MSG_PKTDATA), | |
191 | "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", | |
192 | (u64)p_pkt->rx_buf_addr, pad, packet_length, | |
193 | le16_to_cpu(p_cqe->parse_flags.flags), vlan, | |
194 | opaque_data_0, opaque_data_1); | |
195 | ||
196 | if ((cdev->dp_module & NETIF_MSG_PKTDATA) && buffer->data) { | |
197 | print_hex_dump(KERN_INFO, "", | |
198 | DUMP_PREFIX_OFFSET, 16, 1, | |
199 | buffer->data, packet_length, false); | |
200 | } | |
201 | ||
202 | /* Determine if data is valid */ | |
203 | if (packet_length < ETH_HLEN) | |
204 | reuse = true; | |
205 | ||
206 | /* Allocate a replacement for buffer; Reuse upon failure */ | |
207 | if (!reuse) | |
208 | rc = qed_ll2_alloc_buffer(p_hwfn->cdev, &new_data, | |
209 | &new_phys_addr); | |
210 | ||
211 | /* If need to reuse or there's no replacement buffer, repost this */ | |
212 | if (rc) | |
213 | goto out_post; | |
752ecb2d MY |
214 | dma_unmap_single(&cdev->pdev->dev, buffer->phys_addr, |
215 | cdev->ll2->rx_size, DMA_FROM_DEVICE); | |
0a7fb11c YM |
216 | |
217 | skb = build_skb(buffer->data, 0); | |
218 | if (!skb) { | |
219 | rc = -ENOMEM; | |
220 | goto out_post; | |
221 | } | |
222 | ||
223 | pad += NET_SKB_PAD; | |
224 | skb_reserve(skb, pad); | |
225 | skb_put(skb, packet_length); | |
226 | skb_checksum_none_assert(skb); | |
227 | ||
228 | /* Get parital ethernet information instead of eth_type_trans(), | |
229 | * Since we don't have an associated net_device. | |
230 | */ | |
231 | skb_reset_mac_header(skb); | |
232 | skb->protocol = eth_hdr(skb)->h_proto; | |
233 | ||
234 | /* Pass SKB onward */ | |
235 | if (cdev->ll2->cbs && cdev->ll2->cbs->rx_cb) { | |
236 | if (vlan) | |
237 | __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vlan); | |
238 | cdev->ll2->cbs->rx_cb(cdev->ll2->cb_cookie, skb, | |
239 | opaque_data_0, opaque_data_1); | |
240 | } | |
241 | ||
242 | /* Update Buffer information and update FW producer */ | |
243 | buffer->data = new_data; | |
244 | buffer->phys_addr = new_phys_addr; | |
245 | ||
246 | out_post: | |
247 | rc = qed_ll2_post_rx_buffer(QED_LEADING_HWFN(cdev), cdev->ll2->handle, | |
248 | buffer->phys_addr, 0, buffer, 1); | |
249 | ||
250 | if (rc) | |
251 | qed_ll2_dealloc_buffer(cdev, buffer); | |
252 | } | |
253 | ||
254 | static struct qed_ll2_info *__qed_ll2_handle_sanity(struct qed_hwfn *p_hwfn, | |
255 | u8 connection_handle, | |
256 | bool b_lock, | |
257 | bool b_only_active) | |
258 | { | |
259 | struct qed_ll2_info *p_ll2_conn, *p_ret = NULL; | |
260 | ||
261 | if (connection_handle >= QED_MAX_NUM_OF_LL2_CONNECTIONS) | |
262 | return NULL; | |
263 | ||
264 | if (!p_hwfn->p_ll2_info) | |
265 | return NULL; | |
266 | ||
267 | p_ll2_conn = &p_hwfn->p_ll2_info[connection_handle]; | |
268 | ||
269 | if (b_only_active) { | |
270 | if (b_lock) | |
271 | mutex_lock(&p_ll2_conn->mutex); | |
272 | if (p_ll2_conn->b_active) | |
273 | p_ret = p_ll2_conn; | |
274 | if (b_lock) | |
275 | mutex_unlock(&p_ll2_conn->mutex); | |
276 | } else { | |
277 | p_ret = p_ll2_conn; | |
278 | } | |
279 | ||
280 | return p_ret; | |
281 | } | |
282 | ||
283 | static struct qed_ll2_info *qed_ll2_handle_sanity(struct qed_hwfn *p_hwfn, | |
284 | u8 connection_handle) | |
285 | { | |
286 | return __qed_ll2_handle_sanity(p_hwfn, connection_handle, false, true); | |
287 | } | |
288 | ||
289 | static struct qed_ll2_info *qed_ll2_handle_sanity_lock(struct qed_hwfn *p_hwfn, | |
290 | u8 connection_handle) | |
291 | { | |
292 | return __qed_ll2_handle_sanity(p_hwfn, connection_handle, true, true); | |
293 | } | |
294 | ||
295 | static struct qed_ll2_info *qed_ll2_handle_sanity_inactive(struct qed_hwfn | |
296 | *p_hwfn, | |
297 | u8 connection_handle) | |
298 | { | |
299 | return __qed_ll2_handle_sanity(p_hwfn, connection_handle, false, false); | |
300 | } | |
301 | ||
302 | static void qed_ll2_txq_flush(struct qed_hwfn *p_hwfn, u8 connection_handle) | |
303 | { | |
304 | bool b_last_packet = false, b_last_frag = false; | |
305 | struct qed_ll2_tx_packet *p_pkt = NULL; | |
306 | struct qed_ll2_info *p_ll2_conn; | |
307 | struct qed_ll2_tx_queue *p_tx; | |
abd49676 | 308 | dma_addr_t tx_frag; |
0a7fb11c YM |
309 | |
310 | p_ll2_conn = qed_ll2_handle_sanity_inactive(p_hwfn, connection_handle); | |
311 | if (!p_ll2_conn) | |
312 | return; | |
313 | ||
314 | p_tx = &p_ll2_conn->tx_queue; | |
315 | ||
316 | while (!list_empty(&p_tx->active_descq)) { | |
317 | p_pkt = list_first_entry(&p_tx->active_descq, | |
318 | struct qed_ll2_tx_packet, list_entry); | |
319 | if (!p_pkt) | |
320 | break; | |
321 | ||
322 | list_del(&p_pkt->list_entry); | |
323 | b_last_packet = list_empty(&p_tx->active_descq); | |
324 | list_add_tail(&p_pkt->list_entry, &p_tx->free_descq); | |
0629a330 | 325 | if (p_ll2_conn->conn.conn_type == QED_LL2_TYPE_ISCSI_OOO) { |
1d6cff4f | 326 | struct qed_ooo_buffer *p_buffer; |
0a7fb11c | 327 | |
1d6cff4f YM |
328 | p_buffer = (struct qed_ooo_buffer *)p_pkt->cookie; |
329 | qed_ooo_put_free_buffer(p_hwfn, p_hwfn->p_ooo_info, | |
330 | p_buffer); | |
331 | } else { | |
332 | p_tx->cur_completing_packet = *p_pkt; | |
333 | p_tx->cur_completing_bd_idx = 1; | |
334 | b_last_frag = | |
335 | p_tx->cur_completing_bd_idx == p_pkt->bd_used; | |
336 | tx_frag = p_pkt->bds_set[0].tx_frag; | |
0629a330 | 337 | if (p_ll2_conn->conn.gsi_enable) |
1d6cff4f YM |
338 | qed_ll2b_release_tx_gsi_packet(p_hwfn, |
339 | p_ll2_conn-> | |
340 | my_id, | |
341 | p_pkt->cookie, | |
342 | tx_frag, | |
343 | b_last_frag, | |
344 | b_last_packet); | |
345 | else | |
346 | qed_ll2b_complete_tx_packet(p_hwfn, | |
347 | p_ll2_conn->my_id, | |
348 | p_pkt->cookie, | |
349 | tx_frag, | |
350 | b_last_frag, | |
351 | b_last_packet); | |
352 | } | |
0a7fb11c YM |
353 | } |
354 | } | |
355 | ||
356 | static int qed_ll2_txq_completion(struct qed_hwfn *p_hwfn, void *p_cookie) | |
357 | { | |
358 | struct qed_ll2_info *p_ll2_conn = p_cookie; | |
359 | struct qed_ll2_tx_queue *p_tx = &p_ll2_conn->tx_queue; | |
360 | u16 new_idx = 0, num_bds = 0, num_bds_in_packet = 0; | |
361 | struct qed_ll2_tx_packet *p_pkt; | |
362 | bool b_last_frag = false; | |
363 | unsigned long flags; | |
abd49676 | 364 | dma_addr_t tx_frag; |
0a7fb11c YM |
365 | int rc = -EINVAL; |
366 | ||
367 | spin_lock_irqsave(&p_tx->lock, flags); | |
368 | if (p_tx->b_completing_packet) { | |
369 | rc = -EBUSY; | |
370 | goto out; | |
371 | } | |
372 | ||
373 | new_idx = le16_to_cpu(*p_tx->p_fw_cons); | |
374 | num_bds = ((s16)new_idx - (s16)p_tx->bds_idx); | |
375 | while (num_bds) { | |
376 | if (list_empty(&p_tx->active_descq)) | |
377 | goto out; | |
378 | ||
379 | p_pkt = list_first_entry(&p_tx->active_descq, | |
380 | struct qed_ll2_tx_packet, list_entry); | |
381 | if (!p_pkt) | |
382 | goto out; | |
383 | ||
384 | p_tx->b_completing_packet = true; | |
385 | p_tx->cur_completing_packet = *p_pkt; | |
386 | num_bds_in_packet = p_pkt->bd_used; | |
387 | list_del(&p_pkt->list_entry); | |
388 | ||
389 | if (num_bds < num_bds_in_packet) { | |
390 | DP_NOTICE(p_hwfn, | |
391 | "Rest of BDs does not cover whole packet\n"); | |
392 | goto out; | |
393 | } | |
394 | ||
395 | num_bds -= num_bds_in_packet; | |
396 | p_tx->bds_idx += num_bds_in_packet; | |
397 | while (num_bds_in_packet--) | |
398 | qed_chain_consume(&p_tx->txq_chain); | |
399 | ||
400 | p_tx->cur_completing_bd_idx = 1; | |
401 | b_last_frag = p_tx->cur_completing_bd_idx == p_pkt->bd_used; | |
402 | list_add_tail(&p_pkt->list_entry, &p_tx->free_descq); | |
403 | ||
404 | spin_unlock_irqrestore(&p_tx->lock, flags); | |
abd49676 | 405 | tx_frag = p_pkt->bds_set[0].tx_frag; |
0629a330 | 406 | if (p_ll2_conn->conn.gsi_enable) |
abd49676 RA |
407 | qed_ll2b_complete_tx_gsi_packet(p_hwfn, |
408 | p_ll2_conn->my_id, | |
409 | p_pkt->cookie, | |
410 | tx_frag, | |
411 | b_last_frag, !num_bds); | |
412 | else | |
413 | qed_ll2b_complete_tx_packet(p_hwfn, | |
414 | p_ll2_conn->my_id, | |
415 | p_pkt->cookie, | |
416 | tx_frag, | |
417 | b_last_frag, !num_bds); | |
0a7fb11c YM |
418 | spin_lock_irqsave(&p_tx->lock, flags); |
419 | } | |
420 | ||
421 | p_tx->b_completing_packet = false; | |
422 | rc = 0; | |
423 | out: | |
424 | spin_unlock_irqrestore(&p_tx->lock, flags); | |
425 | return rc; | |
426 | } | |
427 | ||
abd49676 RA |
428 | static int |
429 | qed_ll2_rxq_completion_gsi(struct qed_hwfn *p_hwfn, | |
430 | struct qed_ll2_info *p_ll2_info, | |
431 | union core_rx_cqe_union *p_cqe, | |
432 | unsigned long lock_flags, bool b_last_cqe) | |
433 | { | |
434 | struct qed_ll2_rx_queue *p_rx = &p_ll2_info->rx_queue; | |
435 | struct qed_ll2_rx_packet *p_pkt = NULL; | |
436 | u16 packet_length, parse_flags, vlan; | |
437 | u32 src_mac_addrhi; | |
438 | u16 src_mac_addrlo; | |
439 | ||
440 | if (!list_empty(&p_rx->active_descq)) | |
441 | p_pkt = list_first_entry(&p_rx->active_descq, | |
442 | struct qed_ll2_rx_packet, list_entry); | |
443 | if (!p_pkt) { | |
444 | DP_NOTICE(p_hwfn, | |
445 | "GSI Rx completion but active_descq is empty\n"); | |
446 | return -EIO; | |
447 | } | |
448 | ||
449 | list_del(&p_pkt->list_entry); | |
450 | parse_flags = le16_to_cpu(p_cqe->rx_cqe_gsi.parse_flags.flags); | |
451 | packet_length = le16_to_cpu(p_cqe->rx_cqe_gsi.data_length); | |
452 | vlan = le16_to_cpu(p_cqe->rx_cqe_gsi.vlan); | |
453 | src_mac_addrhi = le32_to_cpu(p_cqe->rx_cqe_gsi.src_mac_addrhi); | |
454 | src_mac_addrlo = le16_to_cpu(p_cqe->rx_cqe_gsi.src_mac_addrlo); | |
455 | if (qed_chain_consume(&p_rx->rxq_chain) != p_pkt->rxq_bd) | |
456 | DP_NOTICE(p_hwfn, | |
457 | "Mismatch between active_descq and the LL2 Rx chain\n"); | |
458 | list_add_tail(&p_pkt->list_entry, &p_rx->free_descq); | |
459 | ||
460 | spin_unlock_irqrestore(&p_rx->lock, lock_flags); | |
461 | qed_ll2b_complete_rx_gsi_packet(p_hwfn, | |
462 | p_ll2_info->my_id, | |
463 | p_pkt->cookie, | |
464 | p_pkt->rx_buf_addr, | |
465 | packet_length, | |
466 | p_cqe->rx_cqe_gsi.data_length_error, | |
467 | parse_flags, | |
468 | vlan, | |
469 | src_mac_addrhi, | |
470 | src_mac_addrlo, b_last_cqe); | |
471 | spin_lock_irqsave(&p_rx->lock, lock_flags); | |
472 | ||
473 | return 0; | |
474 | } | |
475 | ||
0a7fb11c YM |
476 | static int qed_ll2_rxq_completion_reg(struct qed_hwfn *p_hwfn, |
477 | struct qed_ll2_info *p_ll2_conn, | |
478 | union core_rx_cqe_union *p_cqe, | |
1df2aded | 479 | unsigned long *p_lock_flags, |
0a7fb11c YM |
480 | bool b_last_cqe) |
481 | { | |
482 | struct qed_ll2_rx_queue *p_rx = &p_ll2_conn->rx_queue; | |
483 | struct qed_ll2_rx_packet *p_pkt = NULL; | |
484 | ||
485 | if (!list_empty(&p_rx->active_descq)) | |
486 | p_pkt = list_first_entry(&p_rx->active_descq, | |
487 | struct qed_ll2_rx_packet, list_entry); | |
488 | if (!p_pkt) { | |
489 | DP_NOTICE(p_hwfn, | |
490 | "LL2 Rx completion but active_descq is empty\n"); | |
491 | return -EIO; | |
492 | } | |
493 | list_del(&p_pkt->list_entry); | |
494 | ||
495 | if (qed_chain_consume(&p_rx->rxq_chain) != p_pkt->rxq_bd) | |
496 | DP_NOTICE(p_hwfn, | |
497 | "Mismatch between active_descq and the LL2 Rx chain\n"); | |
498 | list_add_tail(&p_pkt->list_entry, &p_rx->free_descq); | |
499 | ||
1df2aded | 500 | spin_unlock_irqrestore(&p_rx->lock, *p_lock_flags); |
0a7fb11c YM |
501 | qed_ll2b_complete_rx_packet(p_hwfn, p_ll2_conn->my_id, |
502 | p_pkt, &p_cqe->rx_cqe_fp, b_last_cqe); | |
1df2aded | 503 | spin_lock_irqsave(&p_rx->lock, *p_lock_flags); |
0a7fb11c YM |
504 | |
505 | return 0; | |
506 | } | |
507 | ||
508 | static int qed_ll2_rxq_completion(struct qed_hwfn *p_hwfn, void *cookie) | |
509 | { | |
510 | struct qed_ll2_info *p_ll2_conn = cookie; | |
511 | struct qed_ll2_rx_queue *p_rx = &p_ll2_conn->rx_queue; | |
512 | union core_rx_cqe_union *cqe = NULL; | |
513 | u16 cq_new_idx = 0, cq_old_idx = 0; | |
514 | unsigned long flags = 0; | |
515 | int rc = 0; | |
516 | ||
517 | spin_lock_irqsave(&p_rx->lock, flags); | |
518 | cq_new_idx = le16_to_cpu(*p_rx->p_fw_cons); | |
519 | cq_old_idx = qed_chain_get_cons_idx(&p_rx->rcq_chain); | |
520 | ||
521 | while (cq_new_idx != cq_old_idx) { | |
522 | bool b_last_cqe = (cq_new_idx == cq_old_idx); | |
523 | ||
524 | cqe = 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 | DP_NOTICE(p_hwfn, "LL2 - unexpected Rx CQE slowpath\n"); | |
535 | rc = -EINVAL; | |
536 | break; | |
abd49676 RA |
537 | case CORE_RX_CQE_TYPE_GSI_OFFLOAD: |
538 | rc = qed_ll2_rxq_completion_gsi(p_hwfn, p_ll2_conn, | |
539 | cqe, flags, b_last_cqe); | |
540 | break; | |
0a7fb11c YM |
541 | case CORE_RX_CQE_TYPE_REGULAR: |
542 | rc = qed_ll2_rxq_completion_reg(p_hwfn, p_ll2_conn, | |
1df2aded RA |
543 | cqe, &flags, |
544 | b_last_cqe); | |
0a7fb11c YM |
545 | break; |
546 | default: | |
547 | rc = -EIO; | |
548 | } | |
549 | } | |
550 | ||
551 | spin_unlock_irqrestore(&p_rx->lock, flags); | |
552 | return rc; | |
553 | } | |
554 | ||
8c93beaf | 555 | static void qed_ll2_rxq_flush(struct qed_hwfn *p_hwfn, u8 connection_handle) |
0a7fb11c YM |
556 | { |
557 | struct qed_ll2_info *p_ll2_conn = NULL; | |
558 | struct qed_ll2_rx_packet *p_pkt = NULL; | |
559 | struct qed_ll2_rx_queue *p_rx; | |
560 | ||
561 | p_ll2_conn = qed_ll2_handle_sanity_inactive(p_hwfn, connection_handle); | |
562 | if (!p_ll2_conn) | |
563 | return; | |
564 | ||
565 | p_rx = &p_ll2_conn->rx_queue; | |
566 | ||
567 | while (!list_empty(&p_rx->active_descq)) { | |
568 | dma_addr_t rx_buf_addr; | |
569 | void *cookie; | |
570 | bool b_last; | |
571 | ||
572 | p_pkt = list_first_entry(&p_rx->active_descq, | |
573 | struct qed_ll2_rx_packet, list_entry); | |
574 | if (!p_pkt) | |
575 | break; | |
576 | ||
b4f0fd4b | 577 | list_move_tail(&p_pkt->list_entry, &p_rx->free_descq); |
0a7fb11c | 578 | |
0629a330 | 579 | if (p_ll2_conn->conn.conn_type == QED_LL2_TYPE_ISCSI_OOO) { |
1d6cff4f YM |
580 | struct qed_ooo_buffer *p_buffer; |
581 | ||
582 | p_buffer = (struct qed_ooo_buffer *)p_pkt->cookie; | |
583 | qed_ooo_put_free_buffer(p_hwfn, p_hwfn->p_ooo_info, | |
584 | p_buffer); | |
585 | } else { | |
586 | rx_buf_addr = p_pkt->rx_buf_addr; | |
587 | cookie = p_pkt->cookie; | |
588 | ||
589 | b_last = list_empty(&p_rx->active_descq); | |
590 | } | |
591 | } | |
592 | } | |
593 | ||
594 | #if IS_ENABLED(CONFIG_QED_ISCSI) | |
595 | static u8 qed_ll2_convert_rx_parse_to_tx_flags(u16 parse_flags) | |
596 | { | |
597 | u8 bd_flags = 0; | |
598 | ||
599 | if (GET_FIELD(parse_flags, PARSING_AND_ERR_FLAGS_TAG8021QEXIST)) | |
600 | SET_FIELD(bd_flags, CORE_TX_BD_FLAGS_VLAN_INSERTION, 1); | |
601 | ||
602 | return bd_flags; | |
603 | } | |
604 | ||
605 | static int qed_ll2_lb_rxq_handler(struct qed_hwfn *p_hwfn, | |
606 | struct qed_ll2_info *p_ll2_conn) | |
607 | { | |
608 | struct qed_ll2_rx_queue *p_rx = &p_ll2_conn->rx_queue; | |
609 | u16 packet_length = 0, parse_flags = 0, vlan = 0; | |
610 | struct qed_ll2_rx_packet *p_pkt = NULL; | |
611 | u32 num_ooo_add_to_peninsula = 0, cid; | |
612 | union core_rx_cqe_union *cqe = NULL; | |
613 | u16 cq_new_idx = 0, cq_old_idx = 0; | |
614 | struct qed_ooo_buffer *p_buffer; | |
615 | struct ooo_opaque *iscsi_ooo; | |
616 | u8 placement_offset = 0; | |
617 | u8 cqe_type; | |
618 | ||
619 | cq_new_idx = le16_to_cpu(*p_rx->p_fw_cons); | |
620 | cq_old_idx = qed_chain_get_cons_idx(&p_rx->rcq_chain); | |
621 | if (cq_new_idx == cq_old_idx) | |
622 | return 0; | |
623 | ||
624 | while (cq_new_idx != cq_old_idx) { | |
625 | struct core_rx_fast_path_cqe *p_cqe_fp; | |
626 | ||
627 | cqe = qed_chain_consume(&p_rx->rcq_chain); | |
628 | cq_old_idx = qed_chain_get_cons_idx(&p_rx->rcq_chain); | |
629 | cqe_type = cqe->rx_cqe_sp.type; | |
630 | ||
631 | if (cqe_type != CORE_RX_CQE_TYPE_REGULAR) { | |
632 | DP_NOTICE(p_hwfn, | |
633 | "Got a non-regular LB LL2 completion [type 0x%02x]\n", | |
634 | cqe_type); | |
635 | return -EINVAL; | |
636 | } | |
637 | p_cqe_fp = &cqe->rx_cqe_fp; | |
638 | ||
639 | placement_offset = p_cqe_fp->placement_offset; | |
640 | parse_flags = le16_to_cpu(p_cqe_fp->parse_flags.flags); | |
641 | packet_length = le16_to_cpu(p_cqe_fp->packet_length); | |
642 | vlan = le16_to_cpu(p_cqe_fp->vlan); | |
643 | iscsi_ooo = (struct ooo_opaque *)&p_cqe_fp->opaque_data; | |
644 | qed_ooo_save_history_entry(p_hwfn, p_hwfn->p_ooo_info, | |
645 | iscsi_ooo); | |
646 | cid = le32_to_cpu(iscsi_ooo->cid); | |
647 | ||
648 | /* Process delete isle first */ | |
649 | if (iscsi_ooo->drop_size) | |
650 | qed_ooo_delete_isles(p_hwfn, p_hwfn->p_ooo_info, cid, | |
651 | iscsi_ooo->drop_isle, | |
652 | iscsi_ooo->drop_size); | |
653 | ||
654 | if (iscsi_ooo->ooo_opcode == TCP_EVENT_NOP) | |
655 | continue; | |
656 | ||
657 | /* Now process create/add/join isles */ | |
658 | if (list_empty(&p_rx->active_descq)) { | |
659 | DP_NOTICE(p_hwfn, | |
660 | "LL2 OOO RX chain has no submitted buffers\n" | |
661 | ); | |
662 | return -EIO; | |
663 | } | |
664 | ||
665 | p_pkt = list_first_entry(&p_rx->active_descq, | |
666 | struct qed_ll2_rx_packet, list_entry); | |
667 | ||
668 | if ((iscsi_ooo->ooo_opcode == TCP_EVENT_ADD_NEW_ISLE) || | |
669 | (iscsi_ooo->ooo_opcode == TCP_EVENT_ADD_ISLE_RIGHT) || | |
670 | (iscsi_ooo->ooo_opcode == TCP_EVENT_ADD_ISLE_LEFT) || | |
671 | (iscsi_ooo->ooo_opcode == TCP_EVENT_ADD_PEN) || | |
672 | (iscsi_ooo->ooo_opcode == TCP_EVENT_JOIN)) { | |
673 | if (!p_pkt) { | |
674 | DP_NOTICE(p_hwfn, | |
675 | "LL2 OOO RX packet is not valid\n"); | |
676 | return -EIO; | |
677 | } | |
678 | list_del(&p_pkt->list_entry); | |
679 | p_buffer = (struct qed_ooo_buffer *)p_pkt->cookie; | |
680 | p_buffer->packet_length = packet_length; | |
681 | p_buffer->parse_flags = parse_flags; | |
682 | p_buffer->vlan = vlan; | |
683 | p_buffer->placement_offset = placement_offset; | |
684 | qed_chain_consume(&p_rx->rxq_chain); | |
685 | list_add_tail(&p_pkt->list_entry, &p_rx->free_descq); | |
686 | ||
687 | switch (iscsi_ooo->ooo_opcode) { | |
688 | case TCP_EVENT_ADD_NEW_ISLE: | |
689 | qed_ooo_add_new_isle(p_hwfn, | |
690 | p_hwfn->p_ooo_info, | |
691 | cid, | |
692 | iscsi_ooo->ooo_isle, | |
693 | p_buffer); | |
694 | break; | |
695 | case TCP_EVENT_ADD_ISLE_RIGHT: | |
696 | qed_ooo_add_new_buffer(p_hwfn, | |
697 | p_hwfn->p_ooo_info, | |
698 | cid, | |
699 | iscsi_ooo->ooo_isle, | |
700 | p_buffer, | |
701 | QED_OOO_RIGHT_BUF); | |
702 | break; | |
703 | case TCP_EVENT_ADD_ISLE_LEFT: | |
704 | qed_ooo_add_new_buffer(p_hwfn, | |
705 | p_hwfn->p_ooo_info, | |
706 | cid, | |
707 | iscsi_ooo->ooo_isle, | |
708 | p_buffer, | |
709 | QED_OOO_LEFT_BUF); | |
710 | break; | |
711 | case TCP_EVENT_JOIN: | |
712 | qed_ooo_add_new_buffer(p_hwfn, | |
713 | p_hwfn->p_ooo_info, | |
714 | cid, | |
715 | iscsi_ooo->ooo_isle + | |
716 | 1, | |
717 | p_buffer, | |
718 | QED_OOO_LEFT_BUF); | |
719 | qed_ooo_join_isles(p_hwfn, | |
720 | p_hwfn->p_ooo_info, | |
721 | cid, iscsi_ooo->ooo_isle); | |
722 | break; | |
723 | case TCP_EVENT_ADD_PEN: | |
724 | num_ooo_add_to_peninsula++; | |
725 | qed_ooo_put_ready_buffer(p_hwfn, | |
726 | p_hwfn->p_ooo_info, | |
727 | p_buffer, true); | |
728 | break; | |
729 | } | |
730 | } else { | |
731 | DP_NOTICE(p_hwfn, | |
732 | "Unexpected event (%d) TX OOO completion\n", | |
733 | iscsi_ooo->ooo_opcode); | |
734 | } | |
735 | } | |
736 | ||
737 | return 0; | |
738 | } | |
739 | ||
740 | static void | |
741 | qed_ooo_submit_tx_buffers(struct qed_hwfn *p_hwfn, | |
742 | struct qed_ll2_info *p_ll2_conn) | |
743 | { | |
744 | struct qed_ooo_buffer *p_buffer; | |
745 | int rc; | |
746 | u16 l4_hdr_offset_w; | |
747 | dma_addr_t first_frag; | |
748 | u16 parse_flags; | |
749 | u8 bd_flags; | |
750 | ||
751 | /* Submit Tx buffers here */ | |
752 | while ((p_buffer = qed_ooo_get_ready_buffer(p_hwfn, | |
753 | p_hwfn->p_ooo_info))) { | |
754 | l4_hdr_offset_w = 0; | |
755 | bd_flags = 0; | |
756 | ||
757 | first_frag = p_buffer->rx_buffer_phys_addr + | |
758 | p_buffer->placement_offset; | |
759 | parse_flags = p_buffer->parse_flags; | |
760 | bd_flags = qed_ll2_convert_rx_parse_to_tx_flags(parse_flags); | |
761 | SET_FIELD(bd_flags, CORE_TX_BD_FLAGS_FORCE_VLAN_MODE, 1); | |
762 | SET_FIELD(bd_flags, CORE_TX_BD_FLAGS_L4_PROTOCOL, 1); | |
763 | ||
764 | rc = qed_ll2_prepare_tx_packet(p_hwfn, p_ll2_conn->my_id, 1, | |
765 | p_buffer->vlan, bd_flags, | |
766 | l4_hdr_offset_w, | |
0629a330 | 767 | p_ll2_conn->conn.tx_dest, 0, |
1d6cff4f YM |
768 | first_frag, |
769 | p_buffer->packet_length, | |
770 | p_buffer, true); | |
771 | if (rc) { | |
772 | qed_ooo_put_ready_buffer(p_hwfn, p_hwfn->p_ooo_info, | |
773 | p_buffer, false); | |
774 | break; | |
775 | } | |
776 | } | |
777 | } | |
778 | ||
779 | static void | |
780 | qed_ooo_submit_rx_buffers(struct qed_hwfn *p_hwfn, | |
781 | struct qed_ll2_info *p_ll2_conn) | |
782 | { | |
783 | struct qed_ooo_buffer *p_buffer; | |
784 | int rc; | |
785 | ||
786 | while ((p_buffer = qed_ooo_get_free_buffer(p_hwfn, | |
787 | p_hwfn->p_ooo_info))) { | |
788 | rc = qed_ll2_post_rx_buffer(p_hwfn, | |
789 | p_ll2_conn->my_id, | |
790 | p_buffer->rx_buffer_phys_addr, | |
791 | 0, p_buffer, true); | |
792 | if (rc) { | |
793 | qed_ooo_put_free_buffer(p_hwfn, | |
794 | p_hwfn->p_ooo_info, p_buffer); | |
795 | break; | |
796 | } | |
797 | } | |
798 | } | |
799 | ||
800 | static int qed_ll2_lb_rxq_completion(struct qed_hwfn *p_hwfn, void *p_cookie) | |
801 | { | |
802 | struct qed_ll2_info *p_ll2_conn = (struct qed_ll2_info *)p_cookie; | |
803 | int rc; | |
804 | ||
805 | rc = qed_ll2_lb_rxq_handler(p_hwfn, p_ll2_conn); | |
806 | if (rc) | |
807 | return rc; | |
808 | ||
809 | qed_ooo_submit_rx_buffers(p_hwfn, p_ll2_conn); | |
810 | qed_ooo_submit_tx_buffers(p_hwfn, p_ll2_conn); | |
811 | ||
812 | return 0; | |
813 | } | |
814 | ||
815 | static int qed_ll2_lb_txq_completion(struct qed_hwfn *p_hwfn, void *p_cookie) | |
816 | { | |
817 | struct qed_ll2_info *p_ll2_conn = (struct qed_ll2_info *)p_cookie; | |
818 | struct qed_ll2_tx_queue *p_tx = &p_ll2_conn->tx_queue; | |
819 | struct qed_ll2_tx_packet *p_pkt = NULL; | |
820 | struct qed_ooo_buffer *p_buffer; | |
821 | bool b_dont_submit_rx = false; | |
822 | u16 new_idx = 0, num_bds = 0; | |
823 | int rc; | |
824 | ||
825 | new_idx = le16_to_cpu(*p_tx->p_fw_cons); | |
826 | num_bds = ((s16)new_idx - (s16)p_tx->bds_idx); | |
827 | ||
828 | if (!num_bds) | |
829 | return 0; | |
830 | ||
831 | while (num_bds) { | |
832 | if (list_empty(&p_tx->active_descq)) | |
833 | return -EINVAL; | |
834 | ||
835 | p_pkt = list_first_entry(&p_tx->active_descq, | |
836 | struct qed_ll2_tx_packet, list_entry); | |
837 | if (!p_pkt) | |
838 | return -EINVAL; | |
839 | ||
840 | if (p_pkt->bd_used != 1) { | |
841 | DP_NOTICE(p_hwfn, | |
842 | "Unexpectedly many BDs(%d) in TX OOO completion\n", | |
843 | p_pkt->bd_used); | |
844 | return -EINVAL; | |
845 | } | |
846 | ||
847 | list_del(&p_pkt->list_entry); | |
848 | ||
849 | num_bds--; | |
850 | p_tx->bds_idx++; | |
851 | qed_chain_consume(&p_tx->txq_chain); | |
852 | ||
853 | p_buffer = (struct qed_ooo_buffer *)p_pkt->cookie; | |
854 | list_add_tail(&p_pkt->list_entry, &p_tx->free_descq); | |
855 | ||
856 | if (b_dont_submit_rx) { | |
857 | qed_ooo_put_free_buffer(p_hwfn, p_hwfn->p_ooo_info, | |
858 | p_buffer); | |
859 | continue; | |
860 | } | |
861 | ||
862 | rc = qed_ll2_post_rx_buffer(p_hwfn, p_ll2_conn->my_id, | |
863 | p_buffer->rx_buffer_phys_addr, 0, | |
864 | p_buffer, true); | |
865 | if (rc != 0) { | |
866 | qed_ooo_put_free_buffer(p_hwfn, | |
867 | p_hwfn->p_ooo_info, p_buffer); | |
868 | b_dont_submit_rx = true; | |
869 | } | |
870 | } | |
871 | ||
872 | qed_ooo_submit_tx_buffers(p_hwfn, p_ll2_conn); | |
873 | ||
874 | return 0; | |
875 | } | |
876 | ||
877 | static int | |
878 | qed_ll2_acquire_connection_ooo(struct qed_hwfn *p_hwfn, | |
879 | struct qed_ll2_info *p_ll2_info, | |
880 | u16 rx_num_ooo_buffers, u16 mtu) | |
881 | { | |
882 | struct qed_ooo_buffer *p_buf = NULL; | |
883 | void *p_virt; | |
884 | u16 buf_idx; | |
885 | int rc = 0; | |
886 | ||
0629a330 | 887 | if (p_ll2_info->conn.conn_type != QED_LL2_TYPE_ISCSI_OOO) |
1d6cff4f YM |
888 | return rc; |
889 | ||
890 | if (!rx_num_ooo_buffers) | |
891 | return -EINVAL; | |
892 | ||
893 | for (buf_idx = 0; buf_idx < rx_num_ooo_buffers; buf_idx++) { | |
894 | p_buf = kzalloc(sizeof(*p_buf), GFP_KERNEL); | |
895 | if (!p_buf) { | |
896 | rc = -ENOMEM; | |
897 | goto out; | |
898 | } | |
899 | ||
900 | p_buf->rx_buffer_size = mtu + 26 + ETH_CACHE_LINE_SIZE; | |
901 | p_buf->rx_buffer_size = (p_buf->rx_buffer_size + | |
902 | ETH_CACHE_LINE_SIZE - 1) & | |
903 | ~(ETH_CACHE_LINE_SIZE - 1); | |
904 | p_virt = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev, | |
905 | p_buf->rx_buffer_size, | |
906 | &p_buf->rx_buffer_phys_addr, | |
907 | GFP_KERNEL); | |
908 | if (!p_virt) { | |
909 | kfree(p_buf); | |
910 | rc = -ENOMEM; | |
911 | goto out; | |
912 | } | |
913 | ||
914 | p_buf->rx_buffer_virt_addr = p_virt; | |
915 | qed_ooo_put_free_buffer(p_hwfn, p_hwfn->p_ooo_info, p_buf); | |
916 | } | |
917 | ||
918 | DP_VERBOSE(p_hwfn, QED_MSG_LL2, | |
919 | "Allocated [%04x] LL2 OOO buffers [each of size 0x%08x]\n", | |
920 | rx_num_ooo_buffers, p_buf->rx_buffer_size); | |
921 | ||
922 | out: | |
923 | return rc; | |
924 | } | |
925 | ||
926 | static void | |
927 | qed_ll2_establish_connection_ooo(struct qed_hwfn *p_hwfn, | |
928 | struct qed_ll2_info *p_ll2_conn) | |
929 | { | |
0629a330 | 930 | if (p_ll2_conn->conn.conn_type != QED_LL2_TYPE_ISCSI_OOO) |
1d6cff4f YM |
931 | return; |
932 | ||
933 | qed_ooo_release_all_isles(p_hwfn, p_hwfn->p_ooo_info); | |
934 | qed_ooo_submit_rx_buffers(p_hwfn, p_ll2_conn); | |
935 | } | |
936 | ||
937 | static void qed_ll2_release_connection_ooo(struct qed_hwfn *p_hwfn, | |
938 | struct qed_ll2_info *p_ll2_conn) | |
939 | { | |
940 | struct qed_ooo_buffer *p_buffer; | |
941 | ||
0629a330 | 942 | if (p_ll2_conn->conn.conn_type != QED_LL2_TYPE_ISCSI_OOO) |
1d6cff4f YM |
943 | return; |
944 | ||
945 | qed_ooo_release_all_isles(p_hwfn, p_hwfn->p_ooo_info); | |
946 | while ((p_buffer = qed_ooo_get_free_buffer(p_hwfn, | |
947 | p_hwfn->p_ooo_info))) { | |
948 | dma_free_coherent(&p_hwfn->cdev->pdev->dev, | |
949 | p_buffer->rx_buffer_size, | |
950 | p_buffer->rx_buffer_virt_addr, | |
951 | p_buffer->rx_buffer_phys_addr); | |
952 | kfree(p_buffer); | |
953 | } | |
954 | } | |
955 | ||
956 | static void qed_ll2_stop_ooo(struct qed_dev *cdev) | |
957 | { | |
958 | struct qed_hwfn *hwfn = QED_LEADING_HWFN(cdev); | |
959 | u8 *handle = &hwfn->pf_params.iscsi_pf_params.ll2_ooo_queue_id; | |
960 | ||
961 | DP_VERBOSE(cdev, QED_MSG_STORAGE, "Stopping LL2 OOO queue [%02x]\n", | |
962 | *handle); | |
963 | ||
964 | qed_ll2_terminate_connection(hwfn, *handle); | |
965 | qed_ll2_release_connection(hwfn, *handle); | |
966 | *handle = QED_LL2_UNUSED_HANDLE; | |
967 | } | |
968 | ||
969 | static int qed_ll2_start_ooo(struct qed_dev *cdev, | |
970 | struct qed_ll2_params *params) | |
971 | { | |
972 | struct qed_hwfn *hwfn = QED_LEADING_HWFN(cdev); | |
973 | u8 *handle = &hwfn->pf_params.iscsi_pf_params.ll2_ooo_queue_id; | |
8aad6f14 | 974 | struct qed_ll2_conn ll2_info = { 0 }; |
1d6cff4f YM |
975 | int rc; |
976 | ||
0629a330 AB |
977 | ll2_info.conn_type = QED_LL2_TYPE_ISCSI_OOO; |
978 | ll2_info.mtu = params->mtu; | |
979 | ll2_info.rx_drop_ttl0_flg = params->drop_ttl0_packets; | |
980 | ll2_info.rx_vlan_removal_en = params->rx_vlan_stripping; | |
981 | ll2_info.tx_tc = OOO_LB_TC; | |
982 | ll2_info.tx_dest = CORE_TX_DEST_LB; | |
983 | ||
984 | rc = qed_ll2_acquire_connection(hwfn, &ll2_info, | |
1d6cff4f YM |
985 | QED_LL2_RX_SIZE, QED_LL2_TX_SIZE, |
986 | handle); | |
1d6cff4f YM |
987 | if (rc) { |
988 | DP_INFO(cdev, "Failed to acquire LL2 OOO connection\n"); | |
989 | goto out; | |
990 | } | |
0a7fb11c | 991 | |
1d6cff4f YM |
992 | rc = qed_ll2_establish_connection(hwfn, *handle); |
993 | if (rc) { | |
994 | DP_INFO(cdev, "Failed to establist LL2 OOO connection\n"); | |
995 | goto fail; | |
0a7fb11c | 996 | } |
1d6cff4f YM |
997 | |
998 | return 0; | |
999 | ||
1000 | fail: | |
1001 | qed_ll2_release_connection(hwfn, *handle); | |
1002 | out: | |
1003 | *handle = QED_LL2_UNUSED_HANDLE; | |
1004 | return rc; | |
0a7fb11c | 1005 | } |
1d6cff4f YM |
1006 | #else /* IS_ENABLED(CONFIG_QED_ISCSI) */ |
1007 | static int qed_ll2_lb_rxq_completion(struct qed_hwfn *p_hwfn, | |
1008 | void *p_cookie) { return -EINVAL; } | |
1009 | static int qed_ll2_lb_txq_completion(struct qed_hwfn *p_hwfn, | |
1010 | void *p_cookie) { return -EINVAL; } | |
1011 | static inline int | |
1012 | qed_ll2_acquire_connection_ooo(struct qed_hwfn *p_hwfn, | |
1013 | struct qed_ll2_info *p_ll2_info, | |
1014 | u16 rx_num_ooo_buffers, u16 mtu) { return 0; } | |
1015 | static inline void | |
1016 | qed_ll2_establish_connection_ooo(struct qed_hwfn *p_hwfn, | |
1017 | struct qed_ll2_info *p_ll2_conn) { return; } | |
1018 | static inline void | |
1019 | qed_ll2_release_connection_ooo(struct qed_hwfn *p_hwfn, | |
1020 | struct qed_ll2_info *p_ll2_conn) { return; } | |
1021 | static inline void qed_ll2_stop_ooo(struct qed_dev *cdev) { return; } | |
1022 | static inline int qed_ll2_start_ooo(struct qed_dev *cdev, | |
1023 | struct qed_ll2_params *params) | |
1024 | { return -EINVAL; } | |
1025 | #endif /* IS_ENABLED(CONFIG_QED_ISCSI) */ | |
0a7fb11c YM |
1026 | |
1027 | static int qed_sp_ll2_rx_queue_start(struct qed_hwfn *p_hwfn, | |
1028 | struct qed_ll2_info *p_ll2_conn, | |
1029 | u8 action_on_error) | |
1030 | { | |
0629a330 | 1031 | enum qed_ll2_conn_type conn_type = p_ll2_conn->conn.conn_type; |
0a7fb11c YM |
1032 | struct qed_ll2_rx_queue *p_rx = &p_ll2_conn->rx_queue; |
1033 | struct core_rx_start_ramrod_data *p_ramrod = NULL; | |
1034 | struct qed_spq_entry *p_ent = NULL; | |
1035 | struct qed_sp_init_data init_data; | |
1036 | u16 cqe_pbl_size; | |
1037 | int rc = 0; | |
1038 | ||
1039 | /* Get SPQ entry */ | |
1040 | memset(&init_data, 0, sizeof(init_data)); | |
1041 | init_data.cid = p_ll2_conn->cid; | |
1042 | init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; | |
1043 | init_data.comp_mode = QED_SPQ_MODE_EBLOCK; | |
1044 | ||
1045 | rc = qed_sp_init_request(p_hwfn, &p_ent, | |
1046 | CORE_RAMROD_RX_QUEUE_START, | |
1047 | PROTOCOLID_CORE, &init_data); | |
1048 | if (rc) | |
1049 | return rc; | |
1050 | ||
1051 | p_ramrod = &p_ent->ramrod.core_rx_queue_start; | |
1052 | ||
1053 | p_ramrod->sb_id = cpu_to_le16(qed_int_get_sp_sb_id(p_hwfn)); | |
1054 | p_ramrod->sb_index = p_rx->rx_sb_index; | |
1055 | p_ramrod->complete_event_flg = 1; | |
1056 | ||
0629a330 | 1057 | p_ramrod->mtu = cpu_to_le16(p_ll2_conn->conn.mtu); |
0a7fb11c YM |
1058 | DMA_REGPAIR_LE(p_ramrod->bd_base, |
1059 | p_rx->rxq_chain.p_phys_addr); | |
1060 | cqe_pbl_size = (u16)qed_chain_get_page_cnt(&p_rx->rcq_chain); | |
1061 | p_ramrod->num_of_pbl_pages = cpu_to_le16(cqe_pbl_size); | |
1062 | DMA_REGPAIR_LE(p_ramrod->cqe_pbl_addr, | |
1063 | qed_chain_get_pbl_phys(&p_rx->rcq_chain)); | |
1064 | ||
0629a330 AB |
1065 | p_ramrod->drop_ttl0_flg = p_ll2_conn->conn.rx_drop_ttl0_flg; |
1066 | p_ramrod->inner_vlan_removal_en = p_ll2_conn->conn.rx_vlan_removal_en; | |
0a7fb11c | 1067 | p_ramrod->queue_id = p_ll2_conn->queue_id; |
1d6cff4f YM |
1068 | p_ramrod->main_func_queue = (conn_type == QED_LL2_TYPE_ISCSI_OOO) ? 0 |
1069 | : 1; | |
0a7fb11c YM |
1070 | |
1071 | if ((IS_MF_DEFAULT(p_hwfn) || IS_MF_SI(p_hwfn)) && | |
1072 | p_ramrod->main_func_queue && (conn_type != QED_LL2_TYPE_ROCE)) { | |
1073 | p_ramrod->mf_si_bcast_accept_all = 1; | |
1074 | p_ramrod->mf_si_mcast_accept_all = 1; | |
1075 | } else { | |
1076 | p_ramrod->mf_si_bcast_accept_all = 0; | |
1077 | p_ramrod->mf_si_mcast_accept_all = 0; | |
1078 | } | |
1079 | ||
1080 | p_ramrod->action_on_error.error_type = action_on_error; | |
0629a330 | 1081 | p_ramrod->gsi_offload_flag = p_ll2_conn->conn.gsi_enable; |
0a7fb11c YM |
1082 | return qed_spq_post(p_hwfn, p_ent, NULL); |
1083 | } | |
1084 | ||
1085 | static int qed_sp_ll2_tx_queue_start(struct qed_hwfn *p_hwfn, | |
1086 | struct qed_ll2_info *p_ll2_conn) | |
1087 | { | |
0629a330 | 1088 | enum qed_ll2_conn_type conn_type = p_ll2_conn->conn.conn_type; |
0a7fb11c YM |
1089 | struct qed_ll2_tx_queue *p_tx = &p_ll2_conn->tx_queue; |
1090 | struct core_tx_start_ramrod_data *p_ramrod = NULL; | |
1091 | struct qed_spq_entry *p_ent = NULL; | |
1092 | struct qed_sp_init_data init_data; | |
1093 | union qed_qm_pq_params pq_params; | |
1094 | u16 pq_id = 0, pbl_size; | |
1095 | int rc = -EINVAL; | |
1096 | ||
1097 | if (!QED_LL2_TX_REGISTERED(p_ll2_conn)) | |
1098 | return 0; | |
1099 | ||
0629a330 | 1100 | if (p_ll2_conn->conn.conn_type == QED_LL2_TYPE_ISCSI_OOO) |
1d6cff4f YM |
1101 | p_ll2_conn->tx_stats_en = 0; |
1102 | else | |
1103 | p_ll2_conn->tx_stats_en = 1; | |
1104 | ||
0a7fb11c YM |
1105 | /* Get SPQ entry */ |
1106 | memset(&init_data, 0, sizeof(init_data)); | |
1107 | init_data.cid = p_ll2_conn->cid; | |
1108 | init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; | |
1109 | init_data.comp_mode = QED_SPQ_MODE_EBLOCK; | |
1110 | ||
1111 | rc = qed_sp_init_request(p_hwfn, &p_ent, | |
1112 | CORE_RAMROD_TX_QUEUE_START, | |
1113 | PROTOCOLID_CORE, &init_data); | |
1114 | if (rc) | |
1115 | return rc; | |
1116 | ||
1117 | p_ramrod = &p_ent->ramrod.core_tx_queue_start; | |
1118 | ||
1119 | p_ramrod->sb_id = cpu_to_le16(qed_int_get_sp_sb_id(p_hwfn)); | |
1120 | p_ramrod->sb_index = p_tx->tx_sb_index; | |
0629a330 | 1121 | p_ramrod->mtu = cpu_to_le16(p_ll2_conn->conn.mtu); |
0a7fb11c YM |
1122 | p_ramrod->stats_en = p_ll2_conn->tx_stats_en; |
1123 | p_ramrod->stats_id = p_ll2_conn->tx_stats_id; | |
1124 | ||
1125 | DMA_REGPAIR_LE(p_ramrod->pbl_base_addr, | |
1126 | qed_chain_get_pbl_phys(&p_tx->txq_chain)); | |
1127 | pbl_size = qed_chain_get_page_cnt(&p_tx->txq_chain); | |
1128 | p_ramrod->pbl_size = cpu_to_le16(pbl_size); | |
1129 | ||
1130 | memset(&pq_params, 0, sizeof(pq_params)); | |
0629a330 | 1131 | pq_params.core.tc = p_ll2_conn->conn.tx_tc; |
0a7fb11c YM |
1132 | pq_id = qed_get_qm_pq(p_hwfn, PROTOCOLID_CORE, &pq_params); |
1133 | p_ramrod->qm_pq_id = cpu_to_le16(pq_id); | |
1134 | ||
1135 | switch (conn_type) { | |
1e128c81 AE |
1136 | case QED_LL2_TYPE_FCOE: |
1137 | p_ramrod->conn_type = PROTOCOLID_FCOE; | |
1138 | break; | |
0a7fb11c YM |
1139 | case QED_LL2_TYPE_ISCSI: |
1140 | case QED_LL2_TYPE_ISCSI_OOO: | |
1141 | p_ramrod->conn_type = PROTOCOLID_ISCSI; | |
1142 | break; | |
1143 | case QED_LL2_TYPE_ROCE: | |
1144 | p_ramrod->conn_type = PROTOCOLID_ROCE; | |
1145 | break; | |
1146 | default: | |
1147 | p_ramrod->conn_type = PROTOCOLID_ETH; | |
1148 | DP_NOTICE(p_hwfn, "Unknown connection type: %d\n", conn_type); | |
1149 | } | |
1150 | ||
0629a330 | 1151 | p_ramrod->gsi_offload_flag = p_ll2_conn->conn.gsi_enable; |
0a7fb11c YM |
1152 | return qed_spq_post(p_hwfn, p_ent, NULL); |
1153 | } | |
1154 | ||
1155 | static int qed_sp_ll2_rx_queue_stop(struct qed_hwfn *p_hwfn, | |
1156 | struct qed_ll2_info *p_ll2_conn) | |
1157 | { | |
1158 | struct core_rx_stop_ramrod_data *p_ramrod = NULL; | |
1159 | struct qed_spq_entry *p_ent = NULL; | |
1160 | struct qed_sp_init_data init_data; | |
1161 | int rc = -EINVAL; | |
1162 | ||
1163 | /* Get SPQ entry */ | |
1164 | memset(&init_data, 0, sizeof(init_data)); | |
1165 | init_data.cid = p_ll2_conn->cid; | |
1166 | init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; | |
1167 | init_data.comp_mode = QED_SPQ_MODE_EBLOCK; | |
1168 | ||
1169 | rc = qed_sp_init_request(p_hwfn, &p_ent, | |
1170 | CORE_RAMROD_RX_QUEUE_STOP, | |
1171 | PROTOCOLID_CORE, &init_data); | |
1172 | if (rc) | |
1173 | return rc; | |
1174 | ||
1175 | p_ramrod = &p_ent->ramrod.core_rx_queue_stop; | |
1176 | ||
1177 | p_ramrod->complete_event_flg = 1; | |
1178 | p_ramrod->queue_id = p_ll2_conn->queue_id; | |
1179 | ||
1180 | return qed_spq_post(p_hwfn, p_ent, NULL); | |
1181 | } | |
1182 | ||
1183 | static int qed_sp_ll2_tx_queue_stop(struct qed_hwfn *p_hwfn, | |
1184 | struct qed_ll2_info *p_ll2_conn) | |
1185 | { | |
1186 | struct qed_spq_entry *p_ent = NULL; | |
1187 | struct qed_sp_init_data init_data; | |
1188 | int rc = -EINVAL; | |
1189 | ||
1190 | /* Get SPQ entry */ | |
1191 | memset(&init_data, 0, sizeof(init_data)); | |
1192 | init_data.cid = p_ll2_conn->cid; | |
1193 | init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; | |
1194 | init_data.comp_mode = QED_SPQ_MODE_EBLOCK; | |
1195 | ||
1196 | rc = qed_sp_init_request(p_hwfn, &p_ent, | |
1197 | CORE_RAMROD_TX_QUEUE_STOP, | |
1198 | PROTOCOLID_CORE, &init_data); | |
1199 | if (rc) | |
1200 | return rc; | |
1201 | ||
1202 | return qed_spq_post(p_hwfn, p_ent, NULL); | |
1203 | } | |
1204 | ||
1205 | static int | |
1206 | qed_ll2_acquire_connection_rx(struct qed_hwfn *p_hwfn, | |
1207 | struct qed_ll2_info *p_ll2_info, u16 rx_num_desc) | |
1208 | { | |
1209 | struct qed_ll2_rx_packet *p_descq; | |
1210 | u32 capacity; | |
1211 | int rc = 0; | |
1212 | ||
1213 | if (!rx_num_desc) | |
1214 | goto out; | |
1215 | ||
1216 | rc = qed_chain_alloc(p_hwfn->cdev, | |
1217 | QED_CHAIN_USE_TO_CONSUME_PRODUCE, | |
1218 | QED_CHAIN_MODE_NEXT_PTR, | |
1219 | QED_CHAIN_CNT_TYPE_U16, | |
1220 | rx_num_desc, | |
1221 | sizeof(struct core_rx_bd), | |
1222 | &p_ll2_info->rx_queue.rxq_chain); | |
1223 | if (rc) { | |
1224 | DP_NOTICE(p_hwfn, "Failed to allocate ll2 rxq chain\n"); | |
1225 | goto out; | |
1226 | } | |
1227 | ||
1228 | capacity = qed_chain_get_capacity(&p_ll2_info->rx_queue.rxq_chain); | |
1229 | p_descq = kcalloc(capacity, sizeof(struct qed_ll2_rx_packet), | |
1230 | GFP_KERNEL); | |
1231 | if (!p_descq) { | |
1232 | rc = -ENOMEM; | |
1233 | DP_NOTICE(p_hwfn, "Failed to allocate ll2 Rx desc\n"); | |
1234 | goto out; | |
1235 | } | |
1236 | p_ll2_info->rx_queue.descq_array = p_descq; | |
1237 | ||
1238 | rc = qed_chain_alloc(p_hwfn->cdev, | |
1239 | QED_CHAIN_USE_TO_CONSUME_PRODUCE, | |
1240 | QED_CHAIN_MODE_PBL, | |
1241 | QED_CHAIN_CNT_TYPE_U16, | |
1242 | rx_num_desc, | |
1243 | sizeof(struct core_rx_fast_path_cqe), | |
1244 | &p_ll2_info->rx_queue.rcq_chain); | |
1245 | if (rc) { | |
1246 | DP_NOTICE(p_hwfn, "Failed to allocate ll2 rcq chain\n"); | |
1247 | goto out; | |
1248 | } | |
1249 | ||
1250 | DP_VERBOSE(p_hwfn, QED_MSG_LL2, | |
1251 | "Allocated LL2 Rxq [Type %08x] with 0x%08x buffers\n", | |
0629a330 | 1252 | p_ll2_info->conn.conn_type, rx_num_desc); |
0a7fb11c YM |
1253 | |
1254 | out: | |
1255 | return rc; | |
1256 | } | |
1257 | ||
1258 | static int qed_ll2_acquire_connection_tx(struct qed_hwfn *p_hwfn, | |
1259 | struct qed_ll2_info *p_ll2_info, | |
1260 | u16 tx_num_desc) | |
1261 | { | |
1262 | struct qed_ll2_tx_packet *p_descq; | |
1263 | u32 capacity; | |
1264 | int rc = 0; | |
1265 | ||
1266 | if (!tx_num_desc) | |
1267 | goto out; | |
1268 | ||
1269 | rc = qed_chain_alloc(p_hwfn->cdev, | |
1270 | QED_CHAIN_USE_TO_CONSUME_PRODUCE, | |
1271 | QED_CHAIN_MODE_PBL, | |
1272 | QED_CHAIN_CNT_TYPE_U16, | |
1273 | tx_num_desc, | |
1274 | sizeof(struct core_tx_bd), | |
1275 | &p_ll2_info->tx_queue.txq_chain); | |
1276 | if (rc) | |
1277 | goto out; | |
1278 | ||
1279 | capacity = qed_chain_get_capacity(&p_ll2_info->tx_queue.txq_chain); | |
1280 | p_descq = kcalloc(capacity, sizeof(struct qed_ll2_tx_packet), | |
1281 | GFP_KERNEL); | |
1282 | if (!p_descq) { | |
1283 | rc = -ENOMEM; | |
1284 | goto out; | |
1285 | } | |
1286 | p_ll2_info->tx_queue.descq_array = p_descq; | |
1287 | ||
1288 | DP_VERBOSE(p_hwfn, QED_MSG_LL2, | |
1289 | "Allocated LL2 Txq [Type %08x] with 0x%08x buffers\n", | |
0629a330 | 1290 | p_ll2_info->conn.conn_type, tx_num_desc); |
0a7fb11c YM |
1291 | |
1292 | out: | |
1293 | if (rc) | |
1294 | DP_NOTICE(p_hwfn, | |
1295 | "Can't allocate memory for Tx LL2 with 0x%08x buffers\n", | |
1296 | tx_num_desc); | |
1297 | return rc; | |
1298 | } | |
1299 | ||
1300 | int qed_ll2_acquire_connection(struct qed_hwfn *p_hwfn, | |
0629a330 | 1301 | struct qed_ll2_conn *p_params, |
0a7fb11c YM |
1302 | u16 rx_num_desc, |
1303 | u16 tx_num_desc, | |
1304 | u8 *p_connection_handle) | |
1305 | { | |
1306 | qed_int_comp_cb_t comp_rx_cb, comp_tx_cb; | |
1307 | struct qed_ll2_info *p_ll2_info = NULL; | |
1308 | int rc; | |
1309 | u8 i; | |
1310 | ||
1311 | if (!p_connection_handle || !p_hwfn->p_ll2_info) | |
1312 | return -EINVAL; | |
1313 | ||
1314 | /* Find a free connection to be used */ | |
1315 | for (i = 0; (i < QED_MAX_NUM_OF_LL2_CONNECTIONS); i++) { | |
1316 | mutex_lock(&p_hwfn->p_ll2_info[i].mutex); | |
1317 | if (p_hwfn->p_ll2_info[i].b_active) { | |
1318 | mutex_unlock(&p_hwfn->p_ll2_info[i].mutex); | |
1319 | continue; | |
1320 | } | |
1321 | ||
1322 | p_hwfn->p_ll2_info[i].b_active = true; | |
1323 | p_ll2_info = &p_hwfn->p_ll2_info[i]; | |
1324 | mutex_unlock(&p_hwfn->p_ll2_info[i].mutex); | |
1325 | break; | |
1326 | } | |
1327 | if (!p_ll2_info) | |
1328 | return -EBUSY; | |
1329 | ||
0629a330 | 1330 | p_ll2_info->conn = *p_params; |
0a7fb11c YM |
1331 | |
1332 | rc = qed_ll2_acquire_connection_rx(p_hwfn, p_ll2_info, rx_num_desc); | |
1333 | if (rc) | |
1334 | goto q_allocate_fail; | |
1335 | ||
1336 | rc = qed_ll2_acquire_connection_tx(p_hwfn, p_ll2_info, tx_num_desc); | |
1337 | if (rc) | |
1338 | goto q_allocate_fail; | |
1339 | ||
1d6cff4f YM |
1340 | rc = qed_ll2_acquire_connection_ooo(p_hwfn, p_ll2_info, |
1341 | rx_num_desc * 2, p_params->mtu); | |
1342 | if (rc) | |
1343 | goto q_allocate_fail; | |
1344 | ||
0a7fb11c | 1345 | /* Register callbacks for the Rx/Tx queues */ |
1d6cff4f YM |
1346 | if (p_params->conn_type == QED_LL2_TYPE_ISCSI_OOO) { |
1347 | comp_rx_cb = qed_ll2_lb_rxq_completion; | |
1348 | comp_tx_cb = qed_ll2_lb_txq_completion; | |
1349 | } else { | |
1350 | comp_rx_cb = qed_ll2_rxq_completion; | |
1351 | comp_tx_cb = qed_ll2_txq_completion; | |
1352 | } | |
0a7fb11c YM |
1353 | |
1354 | if (rx_num_desc) { | |
1355 | qed_int_register_cb(p_hwfn, comp_rx_cb, | |
1356 | &p_hwfn->p_ll2_info[i], | |
1357 | &p_ll2_info->rx_queue.rx_sb_index, | |
1358 | &p_ll2_info->rx_queue.p_fw_cons); | |
1359 | p_ll2_info->rx_queue.b_cb_registred = true; | |
1360 | } | |
1361 | ||
1362 | if (tx_num_desc) { | |
1363 | qed_int_register_cb(p_hwfn, | |
1364 | comp_tx_cb, | |
1365 | &p_hwfn->p_ll2_info[i], | |
1366 | &p_ll2_info->tx_queue.tx_sb_index, | |
1367 | &p_ll2_info->tx_queue.p_fw_cons); | |
1368 | p_ll2_info->tx_queue.b_cb_registred = true; | |
1369 | } | |
1370 | ||
1371 | *p_connection_handle = i; | |
1372 | return rc; | |
1373 | ||
1374 | q_allocate_fail: | |
1375 | qed_ll2_release_connection(p_hwfn, i); | |
1376 | return -ENOMEM; | |
1377 | } | |
1378 | ||
1379 | static int qed_ll2_establish_connection_rx(struct qed_hwfn *p_hwfn, | |
1380 | struct qed_ll2_info *p_ll2_conn) | |
1381 | { | |
1382 | u8 action_on_error = 0; | |
1383 | ||
1384 | if (!QED_LL2_RX_REGISTERED(p_ll2_conn)) | |
1385 | return 0; | |
1386 | ||
1387 | DIRECT_REG_WR(p_ll2_conn->rx_queue.set_prod_addr, 0x0); | |
1388 | ||
1389 | SET_FIELD(action_on_error, | |
1390 | CORE_RX_ACTION_ON_ERROR_PACKET_TOO_BIG, | |
0629a330 | 1391 | p_ll2_conn->conn.ai_err_packet_too_big); |
0a7fb11c | 1392 | SET_FIELD(action_on_error, |
0629a330 | 1393 | CORE_RX_ACTION_ON_ERROR_NO_BUFF, p_ll2_conn->conn.ai_err_no_buf); |
0a7fb11c YM |
1394 | |
1395 | return qed_sp_ll2_rx_queue_start(p_hwfn, p_ll2_conn, action_on_error); | |
1396 | } | |
1397 | ||
1398 | int qed_ll2_establish_connection(struct qed_hwfn *p_hwfn, u8 connection_handle) | |
1399 | { | |
1400 | struct qed_ll2_info *p_ll2_conn; | |
1401 | struct qed_ll2_rx_queue *p_rx; | |
1402 | struct qed_ll2_tx_queue *p_tx; | |
1403 | int rc = -EINVAL; | |
1404 | u32 i, capacity; | |
1405 | u8 qid; | |
1406 | ||
1407 | p_ll2_conn = qed_ll2_handle_sanity_lock(p_hwfn, connection_handle); | |
1408 | if (!p_ll2_conn) | |
1409 | return -EINVAL; | |
1410 | p_rx = &p_ll2_conn->rx_queue; | |
1411 | p_tx = &p_ll2_conn->tx_queue; | |
1412 | ||
1413 | qed_chain_reset(&p_rx->rxq_chain); | |
1414 | qed_chain_reset(&p_rx->rcq_chain); | |
1415 | INIT_LIST_HEAD(&p_rx->active_descq); | |
1416 | INIT_LIST_HEAD(&p_rx->free_descq); | |
1417 | INIT_LIST_HEAD(&p_rx->posting_descq); | |
1418 | spin_lock_init(&p_rx->lock); | |
1419 | capacity = qed_chain_get_capacity(&p_rx->rxq_chain); | |
1420 | for (i = 0; i < capacity; i++) | |
1421 | list_add_tail(&p_rx->descq_array[i].list_entry, | |
1422 | &p_rx->free_descq); | |
1423 | *p_rx->p_fw_cons = 0; | |
1424 | ||
1425 | qed_chain_reset(&p_tx->txq_chain); | |
1426 | INIT_LIST_HEAD(&p_tx->active_descq); | |
1427 | INIT_LIST_HEAD(&p_tx->free_descq); | |
1428 | INIT_LIST_HEAD(&p_tx->sending_descq); | |
1429 | spin_lock_init(&p_tx->lock); | |
1430 | capacity = qed_chain_get_capacity(&p_tx->txq_chain); | |
1431 | for (i = 0; i < capacity; i++) | |
1432 | list_add_tail(&p_tx->descq_array[i].list_entry, | |
1433 | &p_tx->free_descq); | |
1434 | p_tx->cur_completing_bd_idx = 0; | |
1435 | p_tx->bds_idx = 0; | |
1436 | p_tx->b_completing_packet = false; | |
1437 | p_tx->cur_send_packet = NULL; | |
1438 | p_tx->cur_send_frag_num = 0; | |
1439 | p_tx->cur_completing_frag_num = 0; | |
1440 | *p_tx->p_fw_cons = 0; | |
1441 | ||
1442 | qed_cxt_acquire_cid(p_hwfn, PROTOCOLID_CORE, &p_ll2_conn->cid); | |
1443 | ||
1444 | qid = p_hwfn->hw_info.resc_start[QED_LL2_QUEUE] + connection_handle; | |
1445 | p_ll2_conn->queue_id = qid; | |
1446 | p_ll2_conn->tx_stats_id = qid; | |
1447 | p_rx->set_prod_addr = (u8 __iomem *)p_hwfn->regview + | |
1448 | GTT_BAR0_MAP_REG_TSDM_RAM + | |
1449 | TSTORM_LL2_RX_PRODS_OFFSET(qid); | |
1450 | p_tx->doorbell_addr = (u8 __iomem *)p_hwfn->doorbells + | |
1451 | qed_db_addr(p_ll2_conn->cid, | |
1452 | DQ_DEMS_LEGACY); | |
1453 | ||
1454 | rc = qed_ll2_establish_connection_rx(p_hwfn, p_ll2_conn); | |
1455 | if (rc) | |
1456 | return rc; | |
1457 | ||
1458 | rc = qed_sp_ll2_tx_queue_start(p_hwfn, p_ll2_conn); | |
1459 | if (rc) | |
1460 | return rc; | |
1461 | ||
1462 | if (p_hwfn->hw_info.personality != QED_PCI_ETH_ROCE) | |
1463 | qed_wr(p_hwfn, p_hwfn->p_main_ptt, PRS_REG_USE_LIGHT_L2, 1); | |
1464 | ||
1d6cff4f YM |
1465 | qed_ll2_establish_connection_ooo(p_hwfn, p_ll2_conn); |
1466 | ||
1e128c81 AE |
1467 | if (p_ll2_conn->conn.conn_type == QED_LL2_TYPE_FCOE) { |
1468 | qed_llh_add_protocol_filter(p_hwfn, p_hwfn->p_main_ptt, | |
1469 | 0x8906, 0, | |
1470 | QED_LLH_FILTER_ETHERTYPE); | |
1471 | qed_llh_add_protocol_filter(p_hwfn, p_hwfn->p_main_ptt, | |
1472 | 0x8914, 0, | |
1473 | QED_LLH_FILTER_ETHERTYPE); | |
1474 | } | |
1475 | ||
0a7fb11c YM |
1476 | return rc; |
1477 | } | |
1478 | ||
1479 | static void qed_ll2_post_rx_buffer_notify_fw(struct qed_hwfn *p_hwfn, | |
1480 | struct qed_ll2_rx_queue *p_rx, | |
1481 | struct qed_ll2_rx_packet *p_curp) | |
1482 | { | |
1483 | struct qed_ll2_rx_packet *p_posting_packet = NULL; | |
1484 | struct core_ll2_rx_prod rx_prod = { 0, 0, 0 }; | |
1485 | bool b_notify_fw = false; | |
1486 | u16 bd_prod, cq_prod; | |
1487 | ||
1488 | /* This handles the flushing of already posted buffers */ | |
1489 | while (!list_empty(&p_rx->posting_descq)) { | |
1490 | p_posting_packet = list_first_entry(&p_rx->posting_descq, | |
1491 | struct qed_ll2_rx_packet, | |
1492 | list_entry); | |
b4f0fd4b WY |
1493 | list_move_tail(&p_posting_packet->list_entry, |
1494 | &p_rx->active_descq); | |
0a7fb11c YM |
1495 | b_notify_fw = true; |
1496 | } | |
1497 | ||
1498 | /* This handles the supplied packet [if there is one] */ | |
1499 | if (p_curp) { | |
1500 | list_add_tail(&p_curp->list_entry, &p_rx->active_descq); | |
1501 | b_notify_fw = true; | |
1502 | } | |
1503 | ||
1504 | if (!b_notify_fw) | |
1505 | return; | |
1506 | ||
1507 | bd_prod = qed_chain_get_prod_idx(&p_rx->rxq_chain); | |
1508 | cq_prod = qed_chain_get_prod_idx(&p_rx->rcq_chain); | |
1509 | rx_prod.bd_prod = cpu_to_le16(bd_prod); | |
1510 | rx_prod.cqe_prod = cpu_to_le16(cq_prod); | |
1511 | DIRECT_REG_WR(p_rx->set_prod_addr, *((u32 *)&rx_prod)); | |
1512 | } | |
1513 | ||
1514 | int qed_ll2_post_rx_buffer(struct qed_hwfn *p_hwfn, | |
1515 | u8 connection_handle, | |
1516 | dma_addr_t addr, | |
1517 | u16 buf_len, void *cookie, u8 notify_fw) | |
1518 | { | |
1519 | struct core_rx_bd_with_buff_len *p_curb = NULL; | |
1520 | struct qed_ll2_rx_packet *p_curp = NULL; | |
1521 | struct qed_ll2_info *p_ll2_conn; | |
1522 | struct qed_ll2_rx_queue *p_rx; | |
1523 | unsigned long flags; | |
1524 | void *p_data; | |
1525 | int rc = 0; | |
1526 | ||
1527 | p_ll2_conn = qed_ll2_handle_sanity(p_hwfn, connection_handle); | |
1528 | if (!p_ll2_conn) | |
1529 | return -EINVAL; | |
1530 | p_rx = &p_ll2_conn->rx_queue; | |
1531 | ||
1532 | spin_lock_irqsave(&p_rx->lock, flags); | |
1533 | if (!list_empty(&p_rx->free_descq)) | |
1534 | p_curp = list_first_entry(&p_rx->free_descq, | |
1535 | struct qed_ll2_rx_packet, list_entry); | |
1536 | if (p_curp) { | |
1537 | if (qed_chain_get_elem_left(&p_rx->rxq_chain) && | |
1538 | qed_chain_get_elem_left(&p_rx->rcq_chain)) { | |
1539 | p_data = qed_chain_produce(&p_rx->rxq_chain); | |
1540 | p_curb = (struct core_rx_bd_with_buff_len *)p_data; | |
1541 | qed_chain_produce(&p_rx->rcq_chain); | |
1542 | } | |
1543 | } | |
1544 | ||
1545 | /* If we're lacking entires, let's try to flush buffers to FW */ | |
1546 | if (!p_curp || !p_curb) { | |
1547 | rc = -EBUSY; | |
1548 | p_curp = NULL; | |
1549 | goto out_notify; | |
1550 | } | |
1551 | ||
1552 | /* We have an Rx packet we can fill */ | |
1553 | DMA_REGPAIR_LE(p_curb->addr, addr); | |
1554 | p_curb->buff_length = cpu_to_le16(buf_len); | |
1555 | p_curp->rx_buf_addr = addr; | |
1556 | p_curp->cookie = cookie; | |
1557 | p_curp->rxq_bd = p_curb; | |
1558 | p_curp->buf_length = buf_len; | |
1559 | list_del(&p_curp->list_entry); | |
1560 | ||
1561 | /* Check if we only want to enqueue this packet without informing FW */ | |
1562 | if (!notify_fw) { | |
1563 | list_add_tail(&p_curp->list_entry, &p_rx->posting_descq); | |
1564 | goto out; | |
1565 | } | |
1566 | ||
1567 | out_notify: | |
1568 | qed_ll2_post_rx_buffer_notify_fw(p_hwfn, p_rx, p_curp); | |
1569 | out: | |
1570 | spin_unlock_irqrestore(&p_rx->lock, flags); | |
1571 | return rc; | |
1572 | } | |
1573 | ||
1574 | static void qed_ll2_prepare_tx_packet_set(struct qed_hwfn *p_hwfn, | |
1575 | struct qed_ll2_tx_queue *p_tx, | |
1576 | struct qed_ll2_tx_packet *p_curp, | |
1577 | u8 num_of_bds, | |
1578 | dma_addr_t first_frag, | |
1579 | u16 first_frag_len, void *p_cookie, | |
1580 | u8 notify_fw) | |
1581 | { | |
1582 | list_del(&p_curp->list_entry); | |
1583 | p_curp->cookie = p_cookie; | |
1584 | p_curp->bd_used = num_of_bds; | |
1585 | p_curp->notify_fw = notify_fw; | |
1586 | p_tx->cur_send_packet = p_curp; | |
1587 | p_tx->cur_send_frag_num = 0; | |
1588 | ||
1589 | p_curp->bds_set[p_tx->cur_send_frag_num].tx_frag = first_frag; | |
1590 | p_curp->bds_set[p_tx->cur_send_frag_num].frag_len = first_frag_len; | |
1591 | p_tx->cur_send_frag_num++; | |
1592 | } | |
1593 | ||
1594 | static void qed_ll2_prepare_tx_packet_set_bd(struct qed_hwfn *p_hwfn, | |
1595 | struct qed_ll2_info *p_ll2, | |
1596 | struct qed_ll2_tx_packet *p_curp, | |
1597 | u8 num_of_bds, | |
1598 | enum core_tx_dest tx_dest, | |
1599 | u16 vlan, | |
1600 | u8 bd_flags, | |
1601 | u16 l4_hdr_offset_w, | |
abd49676 | 1602 | enum core_roce_flavor_type type, |
0a7fb11c YM |
1603 | dma_addr_t first_frag, |
1604 | u16 first_frag_len) | |
1605 | { | |
1606 | struct qed_chain *p_tx_chain = &p_ll2->tx_queue.txq_chain; | |
1607 | u16 prod_idx = qed_chain_get_prod_idx(p_tx_chain); | |
1608 | struct core_tx_bd *start_bd = NULL; | |
1609 | u16 frag_idx; | |
1610 | ||
1611 | start_bd = (struct core_tx_bd *)qed_chain_produce(p_tx_chain); | |
1612 | start_bd->nw_vlan_or_lb_echo = cpu_to_le16(vlan); | |
1613 | SET_FIELD(start_bd->bitfield1, CORE_TX_BD_L4_HDR_OFFSET_W, | |
1614 | cpu_to_le16(l4_hdr_offset_w)); | |
1615 | SET_FIELD(start_bd->bitfield1, CORE_TX_BD_TX_DST, tx_dest); | |
1616 | start_bd->bd_flags.as_bitfield = bd_flags; | |
1617 | start_bd->bd_flags.as_bitfield |= CORE_TX_BD_FLAGS_START_BD_MASK << | |
1618 | CORE_TX_BD_FLAGS_START_BD_SHIFT; | |
1619 | SET_FIELD(start_bd->bitfield0, CORE_TX_BD_NBDS, num_of_bds); | |
8d1d8fcb | 1620 | SET_FIELD(start_bd->bitfield0, CORE_TX_BD_ROCE_FLAV, type); |
0a7fb11c YM |
1621 | DMA_REGPAIR_LE(start_bd->addr, first_frag); |
1622 | start_bd->nbytes = cpu_to_le16(first_frag_len); | |
1623 | ||
1624 | DP_VERBOSE(p_hwfn, | |
1625 | (NETIF_MSG_TX_QUEUED | QED_MSG_LL2), | |
1626 | "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", | |
1627 | p_ll2->queue_id, | |
1628 | p_ll2->cid, | |
0629a330 | 1629 | p_ll2->conn.conn_type, |
0a7fb11c YM |
1630 | prod_idx, |
1631 | first_frag_len, | |
1632 | num_of_bds, | |
1633 | le32_to_cpu(start_bd->addr.hi), | |
1634 | le32_to_cpu(start_bd->addr.lo)); | |
1635 | ||
1636 | if (p_ll2->tx_queue.cur_send_frag_num == num_of_bds) | |
1637 | return; | |
1638 | ||
1639 | /* Need to provide the packet with additional BDs for frags */ | |
1640 | for (frag_idx = p_ll2->tx_queue.cur_send_frag_num; | |
1641 | frag_idx < num_of_bds; frag_idx++) { | |
1642 | struct core_tx_bd **p_bd = &p_curp->bds_set[frag_idx].txq_bd; | |
1643 | ||
1644 | *p_bd = (struct core_tx_bd *)qed_chain_produce(p_tx_chain); | |
1645 | (*p_bd)->bd_flags.as_bitfield = 0; | |
1646 | (*p_bd)->bitfield1 = 0; | |
1647 | (*p_bd)->bitfield0 = 0; | |
1648 | p_curp->bds_set[frag_idx].tx_frag = 0; | |
1649 | p_curp->bds_set[frag_idx].frag_len = 0; | |
1650 | } | |
1651 | } | |
1652 | ||
1653 | /* This should be called while the Txq spinlock is being held */ | |
1654 | static void qed_ll2_tx_packet_notify(struct qed_hwfn *p_hwfn, | |
1655 | struct qed_ll2_info *p_ll2_conn) | |
1656 | { | |
1657 | bool b_notify = p_ll2_conn->tx_queue.cur_send_packet->notify_fw; | |
1658 | struct qed_ll2_tx_queue *p_tx = &p_ll2_conn->tx_queue; | |
1659 | struct qed_ll2_tx_packet *p_pkt = NULL; | |
1660 | struct core_db_data db_msg = { 0, 0, 0 }; | |
1661 | u16 bd_prod; | |
1662 | ||
1663 | /* If there are missing BDs, don't do anything now */ | |
1664 | if (p_ll2_conn->tx_queue.cur_send_frag_num != | |
1665 | p_ll2_conn->tx_queue.cur_send_packet->bd_used) | |
1666 | return; | |
1667 | ||
1668 | /* Push the current packet to the list and clean after it */ | |
1669 | list_add_tail(&p_ll2_conn->tx_queue.cur_send_packet->list_entry, | |
1670 | &p_ll2_conn->tx_queue.sending_descq); | |
1671 | p_ll2_conn->tx_queue.cur_send_packet = NULL; | |
1672 | p_ll2_conn->tx_queue.cur_send_frag_num = 0; | |
1673 | ||
1674 | /* Notify FW of packet only if requested to */ | |
1675 | if (!b_notify) | |
1676 | return; | |
1677 | ||
1678 | bd_prod = qed_chain_get_prod_idx(&p_ll2_conn->tx_queue.txq_chain); | |
1679 | ||
1680 | while (!list_empty(&p_tx->sending_descq)) { | |
1681 | p_pkt = list_first_entry(&p_tx->sending_descq, | |
1682 | struct qed_ll2_tx_packet, list_entry); | |
1683 | if (!p_pkt) | |
1684 | break; | |
1685 | ||
b4f0fd4b | 1686 | list_move_tail(&p_pkt->list_entry, &p_tx->active_descq); |
0a7fb11c YM |
1687 | } |
1688 | ||
1689 | SET_FIELD(db_msg.params, CORE_DB_DATA_DEST, DB_DEST_XCM); | |
1690 | SET_FIELD(db_msg.params, CORE_DB_DATA_AGG_CMD, DB_AGG_CMD_SET); | |
1691 | SET_FIELD(db_msg.params, CORE_DB_DATA_AGG_VAL_SEL, | |
1692 | DQ_XCM_CORE_TX_BD_PROD_CMD); | |
1693 | db_msg.agg_flags = DQ_XCM_CORE_DQ_CF_CMD; | |
1694 | db_msg.spq_prod = cpu_to_le16(bd_prod); | |
1695 | ||
1696 | /* Make sure the BDs data is updated before ringing the doorbell */ | |
1697 | wmb(); | |
1698 | ||
1699 | DIRECT_REG_WR(p_tx->doorbell_addr, *((u32 *)&db_msg)); | |
1700 | ||
1701 | DP_VERBOSE(p_hwfn, | |
1702 | (NETIF_MSG_TX_QUEUED | QED_MSG_LL2), | |
1703 | "LL2 [q 0x%02x cid 0x%08x type 0x%08x] Doorbelled [producer 0x%04x]\n", | |
1704 | p_ll2_conn->queue_id, | |
0629a330 | 1705 | p_ll2_conn->cid, p_ll2_conn->conn.conn_type, db_msg.spq_prod); |
0a7fb11c YM |
1706 | } |
1707 | ||
1708 | int qed_ll2_prepare_tx_packet(struct qed_hwfn *p_hwfn, | |
1709 | u8 connection_handle, | |
1710 | u8 num_of_bds, | |
1711 | u16 vlan, | |
1712 | u8 bd_flags, | |
1713 | u16 l4_hdr_offset_w, | |
1d6cff4f | 1714 | enum qed_ll2_tx_dest e_tx_dest, |
abd49676 | 1715 | enum qed_ll2_roce_flavor_type qed_roce_flavor, |
0a7fb11c YM |
1716 | dma_addr_t first_frag, |
1717 | u16 first_frag_len, void *cookie, u8 notify_fw) | |
1718 | { | |
1719 | struct qed_ll2_tx_packet *p_curp = NULL; | |
1720 | struct qed_ll2_info *p_ll2_conn = NULL; | |
abd49676 | 1721 | enum core_roce_flavor_type roce_flavor; |
0a7fb11c YM |
1722 | struct qed_ll2_tx_queue *p_tx; |
1723 | struct qed_chain *p_tx_chain; | |
1d6cff4f | 1724 | enum core_tx_dest tx_dest; |
0a7fb11c YM |
1725 | unsigned long flags; |
1726 | int rc = 0; | |
1727 | ||
1728 | p_ll2_conn = qed_ll2_handle_sanity(p_hwfn, connection_handle); | |
1729 | if (!p_ll2_conn) | |
1730 | return -EINVAL; | |
1731 | p_tx = &p_ll2_conn->tx_queue; | |
1732 | p_tx_chain = &p_tx->txq_chain; | |
1733 | ||
1734 | if (num_of_bds > CORE_LL2_TX_MAX_BDS_PER_PACKET) | |
1735 | return -EIO; | |
1736 | ||
1737 | spin_lock_irqsave(&p_tx->lock, flags); | |
1738 | if (p_tx->cur_send_packet) { | |
1739 | rc = -EEXIST; | |
1740 | goto out; | |
1741 | } | |
1742 | ||
1743 | /* Get entry, but only if we have tx elements for it */ | |
1744 | if (!list_empty(&p_tx->free_descq)) | |
1745 | p_curp = list_first_entry(&p_tx->free_descq, | |
1746 | struct qed_ll2_tx_packet, list_entry); | |
1747 | if (p_curp && qed_chain_get_elem_left(p_tx_chain) < num_of_bds) | |
1748 | p_curp = NULL; | |
1749 | ||
1750 | if (!p_curp) { | |
1751 | rc = -EBUSY; | |
1752 | goto out; | |
1753 | } | |
1754 | ||
1d6cff4f YM |
1755 | tx_dest = e_tx_dest == QED_LL2_TX_DEST_NW ? CORE_TX_DEST_NW : |
1756 | CORE_TX_DEST_LB; | |
abd49676 RA |
1757 | if (qed_roce_flavor == QED_LL2_ROCE) { |
1758 | roce_flavor = CORE_ROCE; | |
1759 | } else if (qed_roce_flavor == QED_LL2_RROCE) { | |
1760 | roce_flavor = CORE_RROCE; | |
1761 | } else { | |
1762 | rc = -EINVAL; | |
1763 | goto out; | |
1764 | } | |
1765 | ||
0a7fb11c YM |
1766 | /* Prepare packet and BD, and perhaps send a doorbell to FW */ |
1767 | qed_ll2_prepare_tx_packet_set(p_hwfn, p_tx, p_curp, | |
1768 | num_of_bds, first_frag, | |
1769 | first_frag_len, cookie, notify_fw); | |
1770 | qed_ll2_prepare_tx_packet_set_bd(p_hwfn, p_ll2_conn, p_curp, | |
1d6cff4f | 1771 | num_of_bds, tx_dest, |
0a7fb11c | 1772 | vlan, bd_flags, l4_hdr_offset_w, |
abd49676 | 1773 | roce_flavor, |
0a7fb11c YM |
1774 | first_frag, first_frag_len); |
1775 | ||
1776 | qed_ll2_tx_packet_notify(p_hwfn, p_ll2_conn); | |
1777 | ||
1778 | out: | |
1779 | spin_unlock_irqrestore(&p_tx->lock, flags); | |
1780 | return rc; | |
1781 | } | |
1782 | ||
1783 | int qed_ll2_set_fragment_of_tx_packet(struct qed_hwfn *p_hwfn, | |
1784 | u8 connection_handle, | |
1785 | dma_addr_t addr, u16 nbytes) | |
1786 | { | |
1787 | struct qed_ll2_tx_packet *p_cur_send_packet = NULL; | |
1788 | struct qed_ll2_info *p_ll2_conn = NULL; | |
1789 | u16 cur_send_frag_num = 0; | |
1790 | struct core_tx_bd *p_bd; | |
1791 | unsigned long flags; | |
1792 | ||
1793 | p_ll2_conn = qed_ll2_handle_sanity(p_hwfn, connection_handle); | |
1794 | if (!p_ll2_conn) | |
1795 | return -EINVAL; | |
1796 | ||
1797 | if (!p_ll2_conn->tx_queue.cur_send_packet) | |
1798 | return -EINVAL; | |
1799 | ||
1800 | p_cur_send_packet = p_ll2_conn->tx_queue.cur_send_packet; | |
1801 | cur_send_frag_num = p_ll2_conn->tx_queue.cur_send_frag_num; | |
1802 | ||
1803 | if (cur_send_frag_num >= p_cur_send_packet->bd_used) | |
1804 | return -EINVAL; | |
1805 | ||
1806 | /* Fill the BD information, and possibly notify FW */ | |
1807 | p_bd = p_cur_send_packet->bds_set[cur_send_frag_num].txq_bd; | |
1808 | DMA_REGPAIR_LE(p_bd->addr, addr); | |
1809 | p_bd->nbytes = cpu_to_le16(nbytes); | |
1810 | p_cur_send_packet->bds_set[cur_send_frag_num].tx_frag = addr; | |
1811 | p_cur_send_packet->bds_set[cur_send_frag_num].frag_len = nbytes; | |
1812 | ||
1813 | p_ll2_conn->tx_queue.cur_send_frag_num++; | |
1814 | ||
1815 | spin_lock_irqsave(&p_ll2_conn->tx_queue.lock, flags); | |
1816 | qed_ll2_tx_packet_notify(p_hwfn, p_ll2_conn); | |
1817 | spin_unlock_irqrestore(&p_ll2_conn->tx_queue.lock, flags); | |
1818 | ||
1819 | return 0; | |
1820 | } | |
1821 | ||
1822 | int qed_ll2_terminate_connection(struct qed_hwfn *p_hwfn, u8 connection_handle) | |
1823 | { | |
1824 | struct qed_ll2_info *p_ll2_conn = NULL; | |
1825 | int rc = -EINVAL; | |
1826 | ||
1827 | p_ll2_conn = qed_ll2_handle_sanity_lock(p_hwfn, connection_handle); | |
1828 | if (!p_ll2_conn) | |
1829 | return -EINVAL; | |
1830 | ||
1831 | /* Stop Tx & Rx of connection, if needed */ | |
1832 | if (QED_LL2_TX_REGISTERED(p_ll2_conn)) { | |
1833 | rc = qed_sp_ll2_tx_queue_stop(p_hwfn, p_ll2_conn); | |
1834 | if (rc) | |
1835 | return rc; | |
1836 | qed_ll2_txq_flush(p_hwfn, connection_handle); | |
1837 | } | |
1838 | ||
1839 | if (QED_LL2_RX_REGISTERED(p_ll2_conn)) { | |
1840 | rc = qed_sp_ll2_rx_queue_stop(p_hwfn, p_ll2_conn); | |
1841 | if (rc) | |
1842 | return rc; | |
1843 | qed_ll2_rxq_flush(p_hwfn, connection_handle); | |
1844 | } | |
1845 | ||
0629a330 | 1846 | if (p_ll2_conn->conn.conn_type == QED_LL2_TYPE_ISCSI_OOO) |
1d6cff4f YM |
1847 | qed_ooo_release_all_isles(p_hwfn, p_hwfn->p_ooo_info); |
1848 | ||
1e128c81 AE |
1849 | if (p_ll2_conn->conn.conn_type == QED_LL2_TYPE_FCOE) { |
1850 | qed_llh_remove_protocol_filter(p_hwfn, p_hwfn->p_main_ptt, | |
1851 | 0x8906, 0, | |
1852 | QED_LLH_FILTER_ETHERTYPE); | |
1853 | qed_llh_remove_protocol_filter(p_hwfn, p_hwfn->p_main_ptt, | |
1854 | 0x8914, 0, | |
1855 | QED_LLH_FILTER_ETHERTYPE); | |
1856 | } | |
1857 | ||
0a7fb11c YM |
1858 | return rc; |
1859 | } | |
1860 | ||
1861 | void qed_ll2_release_connection(struct qed_hwfn *p_hwfn, u8 connection_handle) | |
1862 | { | |
1863 | struct qed_ll2_info *p_ll2_conn = NULL; | |
1864 | ||
1865 | p_ll2_conn = qed_ll2_handle_sanity(p_hwfn, connection_handle); | |
1866 | if (!p_ll2_conn) | |
1867 | return; | |
1868 | ||
1869 | if (QED_LL2_RX_REGISTERED(p_ll2_conn)) { | |
1870 | p_ll2_conn->rx_queue.b_cb_registred = false; | |
1871 | qed_int_unregister_cb(p_hwfn, p_ll2_conn->rx_queue.rx_sb_index); | |
1872 | } | |
1873 | ||
1874 | if (QED_LL2_TX_REGISTERED(p_ll2_conn)) { | |
1875 | p_ll2_conn->tx_queue.b_cb_registred = false; | |
1876 | qed_int_unregister_cb(p_hwfn, p_ll2_conn->tx_queue.tx_sb_index); | |
1877 | } | |
1878 | ||
1879 | kfree(p_ll2_conn->tx_queue.descq_array); | |
1880 | qed_chain_free(p_hwfn->cdev, &p_ll2_conn->tx_queue.txq_chain); | |
1881 | ||
1882 | kfree(p_ll2_conn->rx_queue.descq_array); | |
1883 | qed_chain_free(p_hwfn->cdev, &p_ll2_conn->rx_queue.rxq_chain); | |
1884 | qed_chain_free(p_hwfn->cdev, &p_ll2_conn->rx_queue.rcq_chain); | |
1885 | ||
1886 | qed_cxt_release_cid(p_hwfn, p_ll2_conn->cid); | |
1887 | ||
1d6cff4f YM |
1888 | qed_ll2_release_connection_ooo(p_hwfn, p_ll2_conn); |
1889 | ||
0a7fb11c YM |
1890 | mutex_lock(&p_ll2_conn->mutex); |
1891 | p_ll2_conn->b_active = false; | |
1892 | mutex_unlock(&p_ll2_conn->mutex); | |
1893 | } | |
1894 | ||
1895 | struct qed_ll2_info *qed_ll2_alloc(struct qed_hwfn *p_hwfn) | |
1896 | { | |
1897 | struct qed_ll2_info *p_ll2_connections; | |
1898 | u8 i; | |
1899 | ||
1900 | /* Allocate LL2's set struct */ | |
1901 | p_ll2_connections = kcalloc(QED_MAX_NUM_OF_LL2_CONNECTIONS, | |
1902 | sizeof(struct qed_ll2_info), GFP_KERNEL); | |
1903 | if (!p_ll2_connections) { | |
1904 | DP_NOTICE(p_hwfn, "Failed to allocate `struct qed_ll2'\n"); | |
1905 | return NULL; | |
1906 | } | |
1907 | ||
1908 | for (i = 0; i < QED_MAX_NUM_OF_LL2_CONNECTIONS; i++) | |
1909 | p_ll2_connections[i].my_id = i; | |
1910 | ||
1911 | return p_ll2_connections; | |
1912 | } | |
1913 | ||
1914 | void qed_ll2_setup(struct qed_hwfn *p_hwfn, | |
1915 | struct qed_ll2_info *p_ll2_connections) | |
1916 | { | |
1917 | int i; | |
1918 | ||
1919 | for (i = 0; i < QED_MAX_NUM_OF_LL2_CONNECTIONS; i++) | |
1920 | mutex_init(&p_ll2_connections[i].mutex); | |
1921 | } | |
1922 | ||
1923 | void qed_ll2_free(struct qed_hwfn *p_hwfn, | |
1924 | struct qed_ll2_info *p_ll2_connections) | |
1925 | { | |
1926 | kfree(p_ll2_connections); | |
1927 | } | |
1928 | ||
1929 | static void _qed_ll2_get_tstats(struct qed_hwfn *p_hwfn, | |
1930 | struct qed_ptt *p_ptt, | |
1931 | struct qed_ll2_info *p_ll2_conn, | |
1932 | struct qed_ll2_stats *p_stats) | |
1933 | { | |
1934 | struct core_ll2_tstorm_per_queue_stat tstats; | |
1935 | u8 qid = p_ll2_conn->queue_id; | |
1936 | u32 tstats_addr; | |
1937 | ||
1938 | memset(&tstats, 0, sizeof(tstats)); | |
1939 | tstats_addr = BAR0_MAP_REG_TSDM_RAM + | |
1940 | CORE_LL2_TSTORM_PER_QUEUE_STAT_OFFSET(qid); | |
1941 | qed_memcpy_from(p_hwfn, p_ptt, &tstats, tstats_addr, sizeof(tstats)); | |
1942 | ||
1943 | p_stats->packet_too_big_discard = | |
1944 | HILO_64_REGPAIR(tstats.packet_too_big_discard); | |
1945 | p_stats->no_buff_discard = HILO_64_REGPAIR(tstats.no_buff_discard); | |
1946 | } | |
1947 | ||
1948 | static void _qed_ll2_get_ustats(struct qed_hwfn *p_hwfn, | |
1949 | struct qed_ptt *p_ptt, | |
1950 | struct qed_ll2_info *p_ll2_conn, | |
1951 | struct qed_ll2_stats *p_stats) | |
1952 | { | |
1953 | struct core_ll2_ustorm_per_queue_stat ustats; | |
1954 | u8 qid = p_ll2_conn->queue_id; | |
1955 | u32 ustats_addr; | |
1956 | ||
1957 | memset(&ustats, 0, sizeof(ustats)); | |
1958 | ustats_addr = BAR0_MAP_REG_USDM_RAM + | |
1959 | CORE_LL2_USTORM_PER_QUEUE_STAT_OFFSET(qid); | |
1960 | qed_memcpy_from(p_hwfn, p_ptt, &ustats, ustats_addr, sizeof(ustats)); | |
1961 | ||
1962 | p_stats->rcv_ucast_bytes = HILO_64_REGPAIR(ustats.rcv_ucast_bytes); | |
1963 | p_stats->rcv_mcast_bytes = HILO_64_REGPAIR(ustats.rcv_mcast_bytes); | |
1964 | p_stats->rcv_bcast_bytes = HILO_64_REGPAIR(ustats.rcv_bcast_bytes); | |
1965 | p_stats->rcv_ucast_pkts = HILO_64_REGPAIR(ustats.rcv_ucast_pkts); | |
1966 | p_stats->rcv_mcast_pkts = HILO_64_REGPAIR(ustats.rcv_mcast_pkts); | |
1967 | p_stats->rcv_bcast_pkts = HILO_64_REGPAIR(ustats.rcv_bcast_pkts); | |
1968 | } | |
1969 | ||
1970 | static void _qed_ll2_get_pstats(struct qed_hwfn *p_hwfn, | |
1971 | struct qed_ptt *p_ptt, | |
1972 | struct qed_ll2_info *p_ll2_conn, | |
1973 | struct qed_ll2_stats *p_stats) | |
1974 | { | |
1975 | struct core_ll2_pstorm_per_queue_stat pstats; | |
1976 | u8 stats_id = p_ll2_conn->tx_stats_id; | |
1977 | u32 pstats_addr; | |
1978 | ||
1979 | memset(&pstats, 0, sizeof(pstats)); | |
1980 | pstats_addr = BAR0_MAP_REG_PSDM_RAM + | |
1981 | CORE_LL2_PSTORM_PER_QUEUE_STAT_OFFSET(stats_id); | |
1982 | qed_memcpy_from(p_hwfn, p_ptt, &pstats, pstats_addr, sizeof(pstats)); | |
1983 | ||
1984 | p_stats->sent_ucast_bytes = HILO_64_REGPAIR(pstats.sent_ucast_bytes); | |
1985 | p_stats->sent_mcast_bytes = HILO_64_REGPAIR(pstats.sent_mcast_bytes); | |
1986 | p_stats->sent_bcast_bytes = HILO_64_REGPAIR(pstats.sent_bcast_bytes); | |
1987 | p_stats->sent_ucast_pkts = HILO_64_REGPAIR(pstats.sent_ucast_pkts); | |
1988 | p_stats->sent_mcast_pkts = HILO_64_REGPAIR(pstats.sent_mcast_pkts); | |
1989 | p_stats->sent_bcast_pkts = HILO_64_REGPAIR(pstats.sent_bcast_pkts); | |
1990 | } | |
1991 | ||
1992 | int qed_ll2_get_stats(struct qed_hwfn *p_hwfn, | |
1993 | u8 connection_handle, struct qed_ll2_stats *p_stats) | |
1994 | { | |
1995 | struct qed_ll2_info *p_ll2_conn = NULL; | |
1996 | struct qed_ptt *p_ptt; | |
1997 | ||
1998 | memset(p_stats, 0, sizeof(*p_stats)); | |
1999 | ||
2000 | if ((connection_handle >= QED_MAX_NUM_OF_LL2_CONNECTIONS) || | |
2001 | !p_hwfn->p_ll2_info) | |
2002 | return -EINVAL; | |
2003 | ||
2004 | p_ll2_conn = &p_hwfn->p_ll2_info[connection_handle]; | |
2005 | ||
2006 | p_ptt = qed_ptt_acquire(p_hwfn); | |
2007 | if (!p_ptt) { | |
2008 | DP_ERR(p_hwfn, "Failed to acquire ptt\n"); | |
2009 | return -EINVAL; | |
2010 | } | |
2011 | ||
2012 | _qed_ll2_get_tstats(p_hwfn, p_ptt, p_ll2_conn, p_stats); | |
2013 | _qed_ll2_get_ustats(p_hwfn, p_ptt, p_ll2_conn, p_stats); | |
2014 | if (p_ll2_conn->tx_stats_en) | |
2015 | _qed_ll2_get_pstats(p_hwfn, p_ptt, p_ll2_conn, p_stats); | |
2016 | ||
2017 | qed_ptt_release(p_hwfn, p_ptt); | |
2018 | return 0; | |
2019 | } | |
2020 | ||
2021 | static void qed_ll2_register_cb_ops(struct qed_dev *cdev, | |
2022 | const struct qed_ll2_cb_ops *ops, | |
2023 | void *cookie) | |
2024 | { | |
2025 | cdev->ll2->cbs = ops; | |
2026 | cdev->ll2->cb_cookie = cookie; | |
2027 | } | |
2028 | ||
2029 | static int qed_ll2_start(struct qed_dev *cdev, struct qed_ll2_params *params) | |
2030 | { | |
0629a330 | 2031 | struct qed_ll2_conn ll2_info; |
88a2428b | 2032 | struct qed_ll2_buffer *buffer, *tmp_buffer; |
0a7fb11c YM |
2033 | enum qed_ll2_conn_type conn_type; |
2034 | struct qed_ptt *p_ptt; | |
2035 | int rc, i; | |
fc831825 | 2036 | u8 gsi_enable = 1; |
0a7fb11c YM |
2037 | |
2038 | /* Initialize LL2 locks & lists */ | |
2039 | INIT_LIST_HEAD(&cdev->ll2->list); | |
2040 | spin_lock_init(&cdev->ll2->lock); | |
2041 | cdev->ll2->rx_size = NET_SKB_PAD + ETH_HLEN + | |
2042 | L1_CACHE_BYTES + params->mtu; | |
2043 | cdev->ll2->frags_mapped = params->frags_mapped; | |
2044 | ||
2045 | /*Allocate memory for LL2 */ | |
2046 | DP_INFO(cdev, "Allocating LL2 buffers of size %08x bytes\n", | |
2047 | cdev->ll2->rx_size); | |
2048 | for (i = 0; i < QED_LL2_RX_SIZE; i++) { | |
2049 | buffer = kzalloc(sizeof(*buffer), GFP_KERNEL); | |
2050 | if (!buffer) { | |
2051 | DP_INFO(cdev, "Failed to allocate LL2 buffers\n"); | |
2052 | goto fail; | |
2053 | } | |
2054 | ||
2055 | rc = qed_ll2_alloc_buffer(cdev, (u8 **)&buffer->data, | |
2056 | &buffer->phys_addr); | |
2057 | if (rc) { | |
2058 | kfree(buffer); | |
2059 | goto fail; | |
2060 | } | |
2061 | ||
2062 | list_add_tail(&buffer->list, &cdev->ll2->list); | |
2063 | } | |
2064 | ||
2065 | switch (QED_LEADING_HWFN(cdev)->hw_info.personality) { | |
1e128c81 AE |
2066 | case QED_PCI_FCOE: |
2067 | conn_type = QED_LL2_TYPE_FCOE; | |
2068 | gsi_enable = 0; | |
2069 | break; | |
0a7fb11c YM |
2070 | case QED_PCI_ISCSI: |
2071 | conn_type = QED_LL2_TYPE_ISCSI; | |
fc831825 | 2072 | gsi_enable = 0; |
0a7fb11c YM |
2073 | break; |
2074 | case QED_PCI_ETH_ROCE: | |
2075 | conn_type = QED_LL2_TYPE_ROCE; | |
2076 | break; | |
2077 | default: | |
2078 | conn_type = QED_LL2_TYPE_TEST; | |
2079 | } | |
2080 | ||
2081 | /* Prepare the temporary ll2 information */ | |
2082 | memset(&ll2_info, 0, sizeof(ll2_info)); | |
0629a330 | 2083 | |
0a7fb11c YM |
2084 | ll2_info.conn_type = conn_type; |
2085 | ll2_info.mtu = params->mtu; | |
2086 | ll2_info.rx_drop_ttl0_flg = params->drop_ttl0_packets; | |
2087 | ll2_info.rx_vlan_removal_en = params->rx_vlan_stripping; | |
2088 | ll2_info.tx_tc = 0; | |
2089 | ll2_info.tx_dest = CORE_TX_DEST_NW; | |
fc831825 | 2090 | ll2_info.gsi_enable = gsi_enable; |
0a7fb11c YM |
2091 | |
2092 | rc = qed_ll2_acquire_connection(QED_LEADING_HWFN(cdev), &ll2_info, | |
2093 | QED_LL2_RX_SIZE, QED_LL2_TX_SIZE, | |
2094 | &cdev->ll2->handle); | |
2095 | if (rc) { | |
2096 | DP_INFO(cdev, "Failed to acquire LL2 connection\n"); | |
2097 | goto fail; | |
2098 | } | |
2099 | ||
2100 | rc = qed_ll2_establish_connection(QED_LEADING_HWFN(cdev), | |
2101 | cdev->ll2->handle); | |
2102 | if (rc) { | |
2103 | DP_INFO(cdev, "Failed to establish LL2 connection\n"); | |
2104 | goto release_fail; | |
2105 | } | |
2106 | ||
2107 | /* Post all Rx buffers to FW */ | |
2108 | spin_lock_bh(&cdev->ll2->lock); | |
88a2428b | 2109 | list_for_each_entry_safe(buffer, tmp_buffer, &cdev->ll2->list, list) { |
0a7fb11c YM |
2110 | rc = qed_ll2_post_rx_buffer(QED_LEADING_HWFN(cdev), |
2111 | cdev->ll2->handle, | |
2112 | buffer->phys_addr, 0, buffer, 1); | |
2113 | if (rc) { | |
2114 | DP_INFO(cdev, | |
2115 | "Failed to post an Rx buffer; Deleting it\n"); | |
2116 | dma_unmap_single(&cdev->pdev->dev, buffer->phys_addr, | |
2117 | cdev->ll2->rx_size, DMA_FROM_DEVICE); | |
2118 | kfree(buffer->data); | |
2119 | list_del(&buffer->list); | |
2120 | kfree(buffer); | |
2121 | } else { | |
2122 | cdev->ll2->rx_cnt++; | |
2123 | } | |
2124 | } | |
2125 | spin_unlock_bh(&cdev->ll2->lock); | |
2126 | ||
2127 | if (!cdev->ll2->rx_cnt) { | |
2128 | DP_INFO(cdev, "Failed passing even a single Rx buffer\n"); | |
2129 | goto release_terminate; | |
2130 | } | |
2131 | ||
2132 | if (!is_valid_ether_addr(params->ll2_mac_address)) { | |
2133 | DP_INFO(cdev, "Invalid Ethernet address\n"); | |
2134 | goto release_terminate; | |
2135 | } | |
2136 | ||
1d6cff4f YM |
2137 | if (cdev->hwfns[0].hw_info.personality == QED_PCI_ISCSI && |
2138 | cdev->hwfns[0].pf_params.iscsi_pf_params.ooo_enable) { | |
2139 | DP_VERBOSE(cdev, QED_MSG_STORAGE, "Starting OOO LL2 queue\n"); | |
2140 | rc = qed_ll2_start_ooo(cdev, params); | |
2141 | if (rc) { | |
2142 | DP_INFO(cdev, | |
2143 | "Failed to initialize the OOO LL2 queue\n"); | |
2144 | goto release_terminate; | |
2145 | } | |
2146 | } | |
2147 | ||
0a7fb11c YM |
2148 | p_ptt = qed_ptt_acquire(QED_LEADING_HWFN(cdev)); |
2149 | if (!p_ptt) { | |
2150 | DP_INFO(cdev, "Failed to acquire PTT\n"); | |
2151 | goto release_terminate; | |
2152 | } | |
2153 | ||
2154 | rc = qed_llh_add_mac_filter(QED_LEADING_HWFN(cdev), p_ptt, | |
2155 | params->ll2_mac_address); | |
2156 | qed_ptt_release(QED_LEADING_HWFN(cdev), p_ptt); | |
2157 | if (rc) { | |
2158 | DP_ERR(cdev, "Failed to allocate LLH filter\n"); | |
2159 | goto release_terminate_all; | |
2160 | } | |
2161 | ||
2162 | ether_addr_copy(cdev->ll2_mac_address, params->ll2_mac_address); | |
0a7fb11c YM |
2163 | return 0; |
2164 | ||
2165 | release_terminate_all: | |
2166 | ||
2167 | release_terminate: | |
2168 | qed_ll2_terminate_connection(QED_LEADING_HWFN(cdev), cdev->ll2->handle); | |
2169 | release_fail: | |
2170 | qed_ll2_release_connection(QED_LEADING_HWFN(cdev), cdev->ll2->handle); | |
2171 | fail: | |
2172 | qed_ll2_kill_buffers(cdev); | |
2173 | cdev->ll2->handle = QED_LL2_UNUSED_HANDLE; | |
2174 | return -EINVAL; | |
2175 | } | |
2176 | ||
2177 | static int qed_ll2_stop(struct qed_dev *cdev) | |
2178 | { | |
2179 | struct qed_ptt *p_ptt; | |
2180 | int rc; | |
2181 | ||
2182 | if (cdev->ll2->handle == QED_LL2_UNUSED_HANDLE) | |
2183 | return 0; | |
2184 | ||
2185 | p_ptt = qed_ptt_acquire(QED_LEADING_HWFN(cdev)); | |
2186 | if (!p_ptt) { | |
2187 | DP_INFO(cdev, "Failed to acquire PTT\n"); | |
2188 | goto fail; | |
2189 | } | |
2190 | ||
2191 | qed_llh_remove_mac_filter(QED_LEADING_HWFN(cdev), p_ptt, | |
2192 | cdev->ll2_mac_address); | |
2193 | qed_ptt_release(QED_LEADING_HWFN(cdev), p_ptt); | |
2194 | eth_zero_addr(cdev->ll2_mac_address); | |
2195 | ||
1d6cff4f YM |
2196 | if (cdev->hwfns[0].hw_info.personality == QED_PCI_ISCSI && |
2197 | cdev->hwfns[0].pf_params.iscsi_pf_params.ooo_enable) | |
2198 | qed_ll2_stop_ooo(cdev); | |
2199 | ||
0a7fb11c YM |
2200 | rc = qed_ll2_terminate_connection(QED_LEADING_HWFN(cdev), |
2201 | cdev->ll2->handle); | |
2202 | if (rc) | |
2203 | DP_INFO(cdev, "Failed to terminate LL2 connection\n"); | |
2204 | ||
2205 | qed_ll2_kill_buffers(cdev); | |
2206 | ||
2207 | qed_ll2_release_connection(QED_LEADING_HWFN(cdev), cdev->ll2->handle); | |
2208 | cdev->ll2->handle = QED_LL2_UNUSED_HANDLE; | |
2209 | ||
2210 | return rc; | |
2211 | fail: | |
2212 | return -EINVAL; | |
2213 | } | |
2214 | ||
2215 | static int qed_ll2_start_xmit(struct qed_dev *cdev, struct sk_buff *skb) | |
2216 | { | |
2217 | const skb_frag_t *frag; | |
2218 | int rc = -EINVAL, i; | |
2219 | dma_addr_t mapping; | |
2220 | u16 vlan = 0; | |
2221 | u8 flags = 0; | |
2222 | ||
2223 | if (unlikely(skb->ip_summed != CHECKSUM_NONE)) { | |
2224 | DP_INFO(cdev, "Cannot transmit a checksumed packet\n"); | |
2225 | return -EINVAL; | |
2226 | } | |
2227 | ||
2228 | if (1 + skb_shinfo(skb)->nr_frags > CORE_LL2_TX_MAX_BDS_PER_PACKET) { | |
2229 | DP_ERR(cdev, "Cannot transmit a packet with %d fragments\n", | |
2230 | 1 + skb_shinfo(skb)->nr_frags); | |
2231 | return -EINVAL; | |
2232 | } | |
2233 | ||
2234 | mapping = dma_map_single(&cdev->pdev->dev, skb->data, | |
2235 | skb->len, DMA_TO_DEVICE); | |
2236 | if (unlikely(dma_mapping_error(&cdev->pdev->dev, mapping))) { | |
2237 | DP_NOTICE(cdev, "SKB mapping failed\n"); | |
2238 | return -EINVAL; | |
2239 | } | |
2240 | ||
2241 | /* Request HW to calculate IP csum */ | |
2242 | if (!((vlan_get_protocol(skb) == htons(ETH_P_IPV6)) && | |
2243 | ipv6_hdr(skb)->nexthdr == NEXTHDR_IPV6)) | |
2244 | flags |= BIT(CORE_TX_BD_FLAGS_IP_CSUM_SHIFT); | |
2245 | ||
2246 | if (skb_vlan_tag_present(skb)) { | |
2247 | vlan = skb_vlan_tag_get(skb); | |
2248 | flags |= BIT(CORE_TX_BD_FLAGS_VLAN_INSERTION_SHIFT); | |
2249 | } | |
2250 | ||
2251 | rc = qed_ll2_prepare_tx_packet(QED_LEADING_HWFN(cdev), | |
2252 | cdev->ll2->handle, | |
2253 | 1 + skb_shinfo(skb)->nr_frags, | |
1d6cff4f YM |
2254 | vlan, flags, 0, QED_LL2_TX_DEST_NW, |
2255 | 0 /* RoCE FLAVOR */, | |
abd49676 | 2256 | mapping, skb->len, skb, 1); |
0a7fb11c YM |
2257 | if (rc) |
2258 | goto err; | |
2259 | ||
2260 | for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) { | |
2261 | frag = &skb_shinfo(skb)->frags[i]; | |
2262 | if (!cdev->ll2->frags_mapped) { | |
2263 | mapping = skb_frag_dma_map(&cdev->pdev->dev, frag, 0, | |
2264 | skb_frag_size(frag), | |
2265 | DMA_TO_DEVICE); | |
2266 | ||
2267 | if (unlikely(dma_mapping_error(&cdev->pdev->dev, | |
2268 | mapping))) { | |
2269 | DP_NOTICE(cdev, | |
2270 | "Unable to map frag - dropping packet\n"); | |
0ff18d2d | 2271 | rc = -ENOMEM; |
0a7fb11c YM |
2272 | goto err; |
2273 | } | |
2274 | } else { | |
2275 | mapping = page_to_phys(skb_frag_page(frag)) | | |
2276 | frag->page_offset; | |
2277 | } | |
2278 | ||
2279 | rc = qed_ll2_set_fragment_of_tx_packet(QED_LEADING_HWFN(cdev), | |
2280 | cdev->ll2->handle, | |
2281 | mapping, | |
2282 | skb_frag_size(frag)); | |
2283 | ||
2284 | /* if failed not much to do here, partial packet has been posted | |
2285 | * we can't free memory, will need to wait for completion. | |
2286 | */ | |
2287 | if (rc) | |
2288 | goto err2; | |
2289 | } | |
2290 | ||
2291 | return 0; | |
2292 | ||
2293 | err: | |
2294 | dma_unmap_single(&cdev->pdev->dev, mapping, skb->len, DMA_TO_DEVICE); | |
2295 | ||
2296 | err2: | |
2297 | return rc; | |
2298 | } | |
2299 | ||
2300 | static int qed_ll2_stats(struct qed_dev *cdev, struct qed_ll2_stats *stats) | |
2301 | { | |
2302 | if (!cdev->ll2) | |
2303 | return -EINVAL; | |
2304 | ||
2305 | return qed_ll2_get_stats(QED_LEADING_HWFN(cdev), | |
2306 | cdev->ll2->handle, stats); | |
2307 | } | |
2308 | ||
2309 | const struct qed_ll2_ops qed_ll2_ops_pass = { | |
2310 | .start = &qed_ll2_start, | |
2311 | .stop = &qed_ll2_stop, | |
2312 | .start_xmit = &qed_ll2_start_xmit, | |
2313 | .register_cb_ops = &qed_ll2_register_cb_ops, | |
2314 | .get_stats = &qed_ll2_stats, | |
2315 | }; | |
2316 | ||
2317 | int qed_ll2_alloc_if(struct qed_dev *cdev) | |
2318 | { | |
2319 | cdev->ll2 = kzalloc(sizeof(*cdev->ll2), GFP_KERNEL); | |
2320 | return cdev->ll2 ? 0 : -ENOMEM; | |
2321 | } | |
2322 | ||
2323 | void qed_ll2_dealloc_if(struct qed_dev *cdev) | |
2324 | { | |
2325 | kfree(cdev->ll2); | |
2326 | cdev->ll2 = NULL; | |
2327 | } |