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[mirror_ubuntu-artful-kernel.git] / drivers / net / ethernet / qlogic / qed / qed_fcoe.c
1 /* QLogic qed NIC Driver
2 * Copyright (c) 2015-2017 QLogic Corporation
3 *
4 * This software is available to you under a choice of one of two
5 * licenses. You may choose to be licensed under the terms of the GNU
6 * General Public License (GPL) Version 2, available from the file
7 * COPYING in the main directory of this source tree, or the
8 * OpenIB.org BSD license below:
9 *
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
12 * conditions are met:
13 *
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
16 * disclaimer.
17 *
18 * - Redistributions in binary form must reproduce the above
19 * copyright notice, this list of conditions and the following
20 * disclaimer in the documentation and /or other materials
21 * provided with the distribution.
22 *
23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
30 * SOFTWARE.
31 */
32
33 #include <linux/types.h>
34 #include <asm/byteorder.h>
35 #include <asm/param.h>
36 #include <linux/delay.h>
37 #include <linux/dma-mapping.h>
38 #include <linux/interrupt.h>
39 #include <linux/kernel.h>
40 #include <linux/log2.h>
41 #include <linux/module.h>
42 #include <linux/pci.h>
43 #include <linux/slab.h>
44 #include <linux/stddef.h>
45 #include <linux/string.h>
46 #include <linux/version.h>
47 #include <linux/workqueue.h>
48 #include <linux/errno.h>
49 #include <linux/list.h>
50 #include <linux/spinlock.h>
51 #define __PREVENT_DUMP_MEM_ARR__
52 #define __PREVENT_PXP_GLOBAL_WIN__
53 #include "qed.h"
54 #include "qed_cxt.h"
55 #include "qed_dev_api.h"
56 #include "qed_fcoe.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"
62 #include "qed_reg_addr.h"
63 #include "qed_sp.h"
64 #include "qed_sriov.h"
65 #include <linux/qed/qed_fcoe_if.h>
66
67 struct qed_fcoe_conn {
68 struct list_head list_entry;
69 bool free_on_delete;
70
71 u16 conn_id;
72 u32 icid;
73 u32 fw_cid;
74 u8 layer_code;
75
76 dma_addr_t sq_pbl_addr;
77 dma_addr_t sq_curr_page_addr;
78 dma_addr_t sq_next_page_addr;
79 dma_addr_t xferq_pbl_addr;
80 void *xferq_pbl_addr_virt_addr;
81 dma_addr_t xferq_addr[4];
82 void *xferq_addr_virt_addr[4];
83 dma_addr_t confq_pbl_addr;
84 void *confq_pbl_addr_virt_addr;
85 dma_addr_t confq_addr[2];
86 void *confq_addr_virt_addr[2];
87
88 dma_addr_t terminate_params;
89
90 u16 dst_mac_addr_lo;
91 u16 dst_mac_addr_mid;
92 u16 dst_mac_addr_hi;
93 u16 src_mac_addr_lo;
94 u16 src_mac_addr_mid;
95 u16 src_mac_addr_hi;
96
97 u16 tx_max_fc_pay_len;
98 u16 e_d_tov_timer_val;
99 u16 rec_tov_timer_val;
100 u16 rx_max_fc_pay_len;
101 u16 vlan_tag;
102 u16 physical_q0;
103
104 struct fc_addr_nw s_id;
105 u8 max_conc_seqs_c3;
106 struct fc_addr_nw d_id;
107 u8 flags;
108 u8 def_q_idx;
109 };
110
111 static int
112 qed_sp_fcoe_func_start(struct qed_hwfn *p_hwfn,
113 enum spq_mode comp_mode,
114 struct qed_spq_comp_cb *p_comp_addr)
115 {
116 struct qed_fcoe_pf_params *fcoe_pf_params = NULL;
117 struct fcoe_init_ramrod_params *p_ramrod = NULL;
118 struct fcoe_init_func_ramrod_data *p_data;
119 struct fcoe_conn_context *p_cxt = NULL;
120 struct qed_spq_entry *p_ent = NULL;
121 struct qed_sp_init_data init_data;
122 struct qed_cxt_info cxt_info;
123 u32 dummy_cid;
124 int rc = 0;
125 u16 tmp;
126 u8 i;
127
128 /* Get SPQ entry */
129 memset(&init_data, 0, sizeof(init_data));
130 init_data.cid = qed_spq_get_cid(p_hwfn);
131 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
132 init_data.comp_mode = comp_mode;
133 init_data.p_comp_data = p_comp_addr;
134
135 rc = qed_sp_init_request(p_hwfn, &p_ent,
136 FCOE_RAMROD_CMD_ID_INIT_FUNC,
137 PROTOCOLID_FCOE, &init_data);
138 if (rc)
139 return rc;
140
141 p_ramrod = &p_ent->ramrod.fcoe_init;
142 p_data = &p_ramrod->init_ramrod_data;
143 fcoe_pf_params = &p_hwfn->pf_params.fcoe_pf_params;
144
145 p_data->mtu = cpu_to_le16(fcoe_pf_params->mtu);
146 tmp = cpu_to_le16(fcoe_pf_params->sq_num_pbl_pages);
147 p_data->sq_num_pages_in_pbl = tmp;
148
149 rc = qed_cxt_acquire_cid(p_hwfn, PROTOCOLID_FCOE, &dummy_cid);
150 if (rc)
151 return rc;
152
153 cxt_info.iid = dummy_cid;
154 rc = qed_cxt_get_cid_info(p_hwfn, &cxt_info);
155 if (rc) {
156 DP_NOTICE(p_hwfn, "Cannot find context info for dummy cid=%d\n",
157 dummy_cid);
158 return rc;
159 }
160 p_cxt = cxt_info.p_cxt;
161 SET_FIELD(p_cxt->tstorm_ag_context.flags3,
162 TSTORM_FCOE_CONN_AG_CTX_DUMMY_TIMER_CF_EN, 1);
163
164 fcoe_pf_params->dummy_icid = (u16)dummy_cid;
165
166 tmp = cpu_to_le16(fcoe_pf_params->num_tasks);
167 p_data->func_params.num_tasks = tmp;
168 p_data->func_params.log_page_size = fcoe_pf_params->log_page_size;
169 p_data->func_params.debug_mode = fcoe_pf_params->debug_mode;
170
171 DMA_REGPAIR_LE(p_data->q_params.glbl_q_params_addr,
172 fcoe_pf_params->glbl_q_params_addr);
173
174 tmp = cpu_to_le16(fcoe_pf_params->cq_num_entries);
175 p_data->q_params.cq_num_entries = tmp;
176
177 tmp = cpu_to_le16(fcoe_pf_params->cmdq_num_entries);
178 p_data->q_params.cmdq_num_entries = tmp;
179
180 tmp = fcoe_pf_params->num_cqs;
181 p_data->q_params.num_queues = (u8)tmp;
182
183 tmp = (u16)p_hwfn->hw_info.resc_start[QED_CMDQS_CQS];
184 p_data->q_params.queue_relative_offset = (u8)tmp;
185
186 for (i = 0; i < fcoe_pf_params->num_cqs; i++) {
187 tmp = cpu_to_le16(p_hwfn->sbs_info[i]->igu_sb_id);
188 p_data->q_params.cq_cmdq_sb_num_arr[i] = tmp;
189 }
190
191 p_data->q_params.cq_sb_pi = fcoe_pf_params->gl_rq_pi;
192 p_data->q_params.cmdq_sb_pi = fcoe_pf_params->gl_cmd_pi;
193
194 p_data->q_params.bdq_resource_id = (u8)RESC_START(p_hwfn, QED_BDQ);
195
196 DMA_REGPAIR_LE(p_data->q_params.bdq_pbl_base_address[BDQ_ID_RQ],
197 fcoe_pf_params->bdq_pbl_base_addr[BDQ_ID_RQ]);
198 p_data->q_params.bdq_pbl_num_entries[BDQ_ID_RQ] =
199 fcoe_pf_params->bdq_pbl_num_entries[BDQ_ID_RQ];
200 tmp = fcoe_pf_params->bdq_xoff_threshold[BDQ_ID_RQ];
201 p_data->q_params.bdq_xoff_threshold[BDQ_ID_RQ] = cpu_to_le16(tmp);
202 tmp = fcoe_pf_params->bdq_xon_threshold[BDQ_ID_RQ];
203 p_data->q_params.bdq_xon_threshold[BDQ_ID_RQ] = cpu_to_le16(tmp);
204
205 DMA_REGPAIR_LE(p_data->q_params.bdq_pbl_base_address[BDQ_ID_IMM_DATA],
206 fcoe_pf_params->bdq_pbl_base_addr[BDQ_ID_IMM_DATA]);
207 p_data->q_params.bdq_pbl_num_entries[BDQ_ID_IMM_DATA] =
208 fcoe_pf_params->bdq_pbl_num_entries[BDQ_ID_IMM_DATA];
209 tmp = fcoe_pf_params->bdq_xoff_threshold[BDQ_ID_IMM_DATA];
210 p_data->q_params.bdq_xoff_threshold[BDQ_ID_IMM_DATA] = cpu_to_le16(tmp);
211 tmp = fcoe_pf_params->bdq_xon_threshold[BDQ_ID_IMM_DATA];
212 p_data->q_params.bdq_xon_threshold[BDQ_ID_IMM_DATA] = cpu_to_le16(tmp);
213 tmp = fcoe_pf_params->rq_buffer_size;
214 p_data->q_params.rq_buffer_size = cpu_to_le16(tmp);
215
216 if (fcoe_pf_params->is_target) {
217 SET_FIELD(p_data->q_params.q_validity,
218 SCSI_INIT_FUNC_QUEUES_RQ_VALID, 1);
219 if (p_data->q_params.bdq_pbl_num_entries[BDQ_ID_IMM_DATA])
220 SET_FIELD(p_data->q_params.q_validity,
221 SCSI_INIT_FUNC_QUEUES_IMM_DATA_VALID, 1);
222 SET_FIELD(p_data->q_params.q_validity,
223 SCSI_INIT_FUNC_QUEUES_CMD_VALID, 1);
224 } else {
225 SET_FIELD(p_data->q_params.q_validity,
226 SCSI_INIT_FUNC_QUEUES_RQ_VALID, 1);
227 }
228
229 rc = qed_spq_post(p_hwfn, p_ent, NULL);
230
231 return rc;
232 }
233
234 static int
235 qed_sp_fcoe_conn_offload(struct qed_hwfn *p_hwfn,
236 struct qed_fcoe_conn *p_conn,
237 enum spq_mode comp_mode,
238 struct qed_spq_comp_cb *p_comp_addr)
239 {
240 struct fcoe_conn_offload_ramrod_params *p_ramrod = NULL;
241 struct fcoe_conn_offload_ramrod_data *p_data;
242 struct qed_spq_entry *p_ent = NULL;
243 struct qed_sp_init_data init_data;
244 u16 pq_id = 0, tmp;
245 int rc;
246
247 /* Get SPQ entry */
248 memset(&init_data, 0, sizeof(init_data));
249 init_data.cid = p_conn->icid;
250 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
251 init_data.comp_mode = comp_mode;
252 init_data.p_comp_data = p_comp_addr;
253
254 rc = qed_sp_init_request(p_hwfn, &p_ent,
255 FCOE_RAMROD_CMD_ID_OFFLOAD_CONN,
256 PROTOCOLID_FCOE, &init_data);
257 if (rc)
258 return rc;
259
260 p_ramrod = &p_ent->ramrod.fcoe_conn_ofld;
261 p_data = &p_ramrod->offload_ramrod_data;
262
263 /* Transmission PQ is the first of the PF */
264 pq_id = qed_get_qm_pq(p_hwfn, PROTOCOLID_FCOE, NULL);
265 p_conn->physical_q0 = cpu_to_le16(pq_id);
266 p_data->physical_q0 = cpu_to_le16(pq_id);
267
268 p_data->conn_id = cpu_to_le16(p_conn->conn_id);
269 DMA_REGPAIR_LE(p_data->sq_pbl_addr, p_conn->sq_pbl_addr);
270 DMA_REGPAIR_LE(p_data->sq_curr_page_addr, p_conn->sq_curr_page_addr);
271 DMA_REGPAIR_LE(p_data->sq_next_page_addr, p_conn->sq_next_page_addr);
272 DMA_REGPAIR_LE(p_data->xferq_pbl_addr, p_conn->xferq_pbl_addr);
273 DMA_REGPAIR_LE(p_data->xferq_curr_page_addr, p_conn->xferq_addr[0]);
274 DMA_REGPAIR_LE(p_data->xferq_next_page_addr, p_conn->xferq_addr[1]);
275
276 DMA_REGPAIR_LE(p_data->respq_pbl_addr, p_conn->confq_pbl_addr);
277 DMA_REGPAIR_LE(p_data->respq_curr_page_addr, p_conn->confq_addr[0]);
278 DMA_REGPAIR_LE(p_data->respq_next_page_addr, p_conn->confq_addr[1]);
279
280 p_data->dst_mac_addr_lo = cpu_to_le16(p_conn->dst_mac_addr_lo);
281 p_data->dst_mac_addr_mid = cpu_to_le16(p_conn->dst_mac_addr_mid);
282 p_data->dst_mac_addr_hi = cpu_to_le16(p_conn->dst_mac_addr_hi);
283 p_data->src_mac_addr_lo = cpu_to_le16(p_conn->src_mac_addr_lo);
284 p_data->src_mac_addr_mid = cpu_to_le16(p_conn->src_mac_addr_mid);
285 p_data->src_mac_addr_hi = cpu_to_le16(p_conn->src_mac_addr_hi);
286
287 tmp = cpu_to_le16(p_conn->tx_max_fc_pay_len);
288 p_data->tx_max_fc_pay_len = tmp;
289 tmp = cpu_to_le16(p_conn->e_d_tov_timer_val);
290 p_data->e_d_tov_timer_val = tmp;
291 tmp = cpu_to_le16(p_conn->rec_tov_timer_val);
292 p_data->rec_rr_tov_timer_val = tmp;
293 tmp = cpu_to_le16(p_conn->rx_max_fc_pay_len);
294 p_data->rx_max_fc_pay_len = tmp;
295
296 p_data->vlan_tag = cpu_to_le16(p_conn->vlan_tag);
297 p_data->s_id.addr_hi = p_conn->s_id.addr_hi;
298 p_data->s_id.addr_mid = p_conn->s_id.addr_mid;
299 p_data->s_id.addr_lo = p_conn->s_id.addr_lo;
300 p_data->max_conc_seqs_c3 = p_conn->max_conc_seqs_c3;
301 p_data->d_id.addr_hi = p_conn->d_id.addr_hi;
302 p_data->d_id.addr_mid = p_conn->d_id.addr_mid;
303 p_data->d_id.addr_lo = p_conn->d_id.addr_lo;
304 p_data->flags = p_conn->flags;
305 p_data->def_q_idx = p_conn->def_q_idx;
306
307 return qed_spq_post(p_hwfn, p_ent, NULL);
308 }
309
310 static int
311 qed_sp_fcoe_conn_destroy(struct qed_hwfn *p_hwfn,
312 struct qed_fcoe_conn *p_conn,
313 enum spq_mode comp_mode,
314 struct qed_spq_comp_cb *p_comp_addr)
315 {
316 struct fcoe_conn_terminate_ramrod_params *p_ramrod = NULL;
317 struct qed_spq_entry *p_ent = NULL;
318 struct qed_sp_init_data init_data;
319 int rc = 0;
320
321 /* Get SPQ entry */
322 memset(&init_data, 0, sizeof(init_data));
323 init_data.cid = p_conn->icid;
324 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
325 init_data.comp_mode = comp_mode;
326 init_data.p_comp_data = p_comp_addr;
327
328 rc = qed_sp_init_request(p_hwfn, &p_ent,
329 FCOE_RAMROD_CMD_ID_TERMINATE_CONN,
330 PROTOCOLID_FCOE, &init_data);
331 if (rc)
332 return rc;
333
334 p_ramrod = &p_ent->ramrod.fcoe_conn_terminate;
335 DMA_REGPAIR_LE(p_ramrod->terminate_ramrod_data.terminate_params_addr,
336 p_conn->terminate_params);
337
338 return qed_spq_post(p_hwfn, p_ent, NULL);
339 }
340
341 static int
342 qed_sp_fcoe_func_stop(struct qed_hwfn *p_hwfn,
343 enum spq_mode comp_mode,
344 struct qed_spq_comp_cb *p_comp_addr)
345 {
346 struct qed_ptt *p_ptt = p_hwfn->p_main_ptt;
347 struct qed_spq_entry *p_ent = NULL;
348 struct qed_sp_init_data init_data;
349 u32 active_segs = 0;
350 int rc = 0;
351
352 /* Get SPQ entry */
353 memset(&init_data, 0, sizeof(init_data));
354 init_data.cid = p_hwfn->pf_params.fcoe_pf_params.dummy_icid;
355 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
356 init_data.comp_mode = comp_mode;
357 init_data.p_comp_data = p_comp_addr;
358
359 rc = qed_sp_init_request(p_hwfn, &p_ent,
360 FCOE_RAMROD_CMD_ID_DESTROY_FUNC,
361 PROTOCOLID_FCOE, &init_data);
362 if (rc)
363 return rc;
364
365 active_segs = qed_rd(p_hwfn, p_ptt, TM_REG_PF_ENABLE_TASK);
366 active_segs &= ~BIT(QED_CXT_FCOE_TID_SEG);
367 qed_wr(p_hwfn, p_ptt, TM_REG_PF_ENABLE_TASK, active_segs);
368
369 return qed_spq_post(p_hwfn, p_ent, NULL);
370 }
371
372 static int
373 qed_fcoe_allocate_connection(struct qed_hwfn *p_hwfn,
374 struct qed_fcoe_conn **p_out_conn)
375 {
376 struct qed_fcoe_conn *p_conn = NULL;
377 void *p_addr;
378 u32 i;
379
380 spin_lock_bh(&p_hwfn->p_fcoe_info->lock);
381 if (!list_empty(&p_hwfn->p_fcoe_info->free_list))
382 p_conn =
383 list_first_entry(&p_hwfn->p_fcoe_info->free_list,
384 struct qed_fcoe_conn, list_entry);
385 if (p_conn) {
386 list_del(&p_conn->list_entry);
387 spin_unlock_bh(&p_hwfn->p_fcoe_info->lock);
388 *p_out_conn = p_conn;
389 return 0;
390 }
391 spin_unlock_bh(&p_hwfn->p_fcoe_info->lock);
392
393 p_conn = kzalloc(sizeof(*p_conn), GFP_KERNEL);
394 if (!p_conn)
395 return -ENOMEM;
396
397 p_addr = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev,
398 QED_CHAIN_PAGE_SIZE,
399 &p_conn->xferq_pbl_addr, GFP_KERNEL);
400 if (!p_addr)
401 goto nomem_pbl_xferq;
402 p_conn->xferq_pbl_addr_virt_addr = p_addr;
403
404 for (i = 0; i < ARRAY_SIZE(p_conn->xferq_addr); i++) {
405 p_addr = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev,
406 QED_CHAIN_PAGE_SIZE,
407 &p_conn->xferq_addr[i], GFP_KERNEL);
408 if (!p_addr)
409 goto nomem_xferq;
410 p_conn->xferq_addr_virt_addr[i] = p_addr;
411
412 p_addr = p_conn->xferq_pbl_addr_virt_addr;
413 ((dma_addr_t *)p_addr)[i] = p_conn->xferq_addr[i];
414 }
415
416 p_addr = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev,
417 QED_CHAIN_PAGE_SIZE,
418 &p_conn->confq_pbl_addr, GFP_KERNEL);
419 if (!p_addr)
420 goto nomem_xferq;
421 p_conn->confq_pbl_addr_virt_addr = p_addr;
422
423 for (i = 0; i < ARRAY_SIZE(p_conn->confq_addr); i++) {
424 p_addr = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev,
425 QED_CHAIN_PAGE_SIZE,
426 &p_conn->confq_addr[i], GFP_KERNEL);
427 if (!p_addr)
428 goto nomem_confq;
429 p_conn->confq_addr_virt_addr[i] = p_addr;
430
431 p_addr = p_conn->confq_pbl_addr_virt_addr;
432 ((dma_addr_t *)p_addr)[i] = p_conn->confq_addr[i];
433 }
434
435 p_conn->free_on_delete = true;
436 *p_out_conn = p_conn;
437 return 0;
438
439 nomem_confq:
440 dma_free_coherent(&p_hwfn->cdev->pdev->dev,
441 QED_CHAIN_PAGE_SIZE,
442 p_conn->confq_pbl_addr_virt_addr,
443 p_conn->confq_pbl_addr);
444 for (i = 0; i < ARRAY_SIZE(p_conn->confq_addr); i++)
445 if (p_conn->confq_addr_virt_addr[i])
446 dma_free_coherent(&p_hwfn->cdev->pdev->dev,
447 QED_CHAIN_PAGE_SIZE,
448 p_conn->confq_addr_virt_addr[i],
449 p_conn->confq_addr[i]);
450 nomem_xferq:
451 dma_free_coherent(&p_hwfn->cdev->pdev->dev,
452 QED_CHAIN_PAGE_SIZE,
453 p_conn->xferq_pbl_addr_virt_addr,
454 p_conn->xferq_pbl_addr);
455 for (i = 0; i < ARRAY_SIZE(p_conn->xferq_addr); i++)
456 if (p_conn->xferq_addr_virt_addr[i])
457 dma_free_coherent(&p_hwfn->cdev->pdev->dev,
458 QED_CHAIN_PAGE_SIZE,
459 p_conn->xferq_addr_virt_addr[i],
460 p_conn->xferq_addr[i]);
461 nomem_pbl_xferq:
462 kfree(p_conn);
463 return -ENOMEM;
464 }
465
466 static void qed_fcoe_free_connection(struct qed_hwfn *p_hwfn,
467 struct qed_fcoe_conn *p_conn)
468 {
469 u32 i;
470
471 if (!p_conn)
472 return;
473
474 if (p_conn->confq_pbl_addr_virt_addr)
475 dma_free_coherent(&p_hwfn->cdev->pdev->dev,
476 QED_CHAIN_PAGE_SIZE,
477 p_conn->confq_pbl_addr_virt_addr,
478 p_conn->confq_pbl_addr);
479
480 for (i = 0; i < ARRAY_SIZE(p_conn->confq_addr); i++) {
481 if (!p_conn->confq_addr_virt_addr[i])
482 continue;
483 dma_free_coherent(&p_hwfn->cdev->pdev->dev,
484 QED_CHAIN_PAGE_SIZE,
485 p_conn->confq_addr_virt_addr[i],
486 p_conn->confq_addr[i]);
487 }
488
489 if (p_conn->xferq_pbl_addr_virt_addr)
490 dma_free_coherent(&p_hwfn->cdev->pdev->dev,
491 QED_CHAIN_PAGE_SIZE,
492 p_conn->xferq_pbl_addr_virt_addr,
493 p_conn->xferq_pbl_addr);
494
495 for (i = 0; i < ARRAY_SIZE(p_conn->xferq_addr); i++) {
496 if (!p_conn->xferq_addr_virt_addr[i])
497 continue;
498 dma_free_coherent(&p_hwfn->cdev->pdev->dev,
499 QED_CHAIN_PAGE_SIZE,
500 p_conn->xferq_addr_virt_addr[i],
501 p_conn->xferq_addr[i]);
502 }
503 kfree(p_conn);
504 }
505
506 static void __iomem *qed_fcoe_get_db_addr(struct qed_hwfn *p_hwfn, u32 cid)
507 {
508 return (u8 __iomem *)p_hwfn->doorbells +
509 qed_db_addr(cid, DQ_DEMS_LEGACY);
510 }
511
512 static void __iomem *qed_fcoe_get_primary_bdq_prod(struct qed_hwfn *p_hwfn,
513 u8 bdq_id)
514 {
515 if (RESC_NUM(p_hwfn, QED_BDQ)) {
516 return (u8 __iomem *)p_hwfn->regview +
517 GTT_BAR0_MAP_REG_MSDM_RAM +
518 MSTORM_SCSI_BDQ_EXT_PROD_OFFSET(RESC_START(p_hwfn,
519 QED_BDQ),
520 bdq_id);
521 } else {
522 DP_NOTICE(p_hwfn, "BDQ is not allocated!\n");
523 return NULL;
524 }
525 }
526
527 static void __iomem *qed_fcoe_get_secondary_bdq_prod(struct qed_hwfn *p_hwfn,
528 u8 bdq_id)
529 {
530 if (RESC_NUM(p_hwfn, QED_BDQ)) {
531 return (u8 __iomem *)p_hwfn->regview +
532 GTT_BAR0_MAP_REG_TSDM_RAM +
533 TSTORM_SCSI_BDQ_EXT_PROD_OFFSET(RESC_START(p_hwfn,
534 QED_BDQ),
535 bdq_id);
536 } else {
537 DP_NOTICE(p_hwfn, "BDQ is not allocated!\n");
538 return NULL;
539 }
540 }
541
542 struct qed_fcoe_info *qed_fcoe_alloc(struct qed_hwfn *p_hwfn)
543 {
544 struct qed_fcoe_info *p_fcoe_info;
545
546 /* Allocate LL2's set struct */
547 p_fcoe_info = kzalloc(sizeof(*p_fcoe_info), GFP_KERNEL);
548 if (!p_fcoe_info) {
549 DP_NOTICE(p_hwfn, "Failed to allocate qed_fcoe_info'\n");
550 return NULL;
551 }
552 INIT_LIST_HEAD(&p_fcoe_info->free_list);
553 return p_fcoe_info;
554 }
555
556 void qed_fcoe_setup(struct qed_hwfn *p_hwfn, struct qed_fcoe_info *p_fcoe_info)
557 {
558 struct fcoe_task_context *p_task_ctx = NULL;
559 int rc;
560 u32 i;
561
562 spin_lock_init(&p_fcoe_info->lock);
563 for (i = 0; i < p_hwfn->pf_params.fcoe_pf_params.num_tasks; i++) {
564 rc = qed_cxt_get_task_ctx(p_hwfn, i,
565 QED_CTX_WORKING_MEM,
566 (void **)&p_task_ctx);
567 if (rc)
568 continue;
569
570 memset(p_task_ctx, 0, sizeof(struct fcoe_task_context));
571 SET_FIELD(p_task_ctx->timer_context.logical_client_0,
572 TIMERS_CONTEXT_VALIDLC0, 1);
573 SET_FIELD(p_task_ctx->timer_context.logical_client_1,
574 TIMERS_CONTEXT_VALIDLC1, 1);
575 SET_FIELD(p_task_ctx->tstorm_ag_context.flags0,
576 TSTORM_FCOE_TASK_AG_CTX_CONNECTION_TYPE, 1);
577 }
578 }
579
580 void qed_fcoe_free(struct qed_hwfn *p_hwfn, struct qed_fcoe_info *p_fcoe_info)
581 {
582 struct qed_fcoe_conn *p_conn = NULL;
583
584 if (!p_fcoe_info)
585 return;
586
587 while (!list_empty(&p_fcoe_info->free_list)) {
588 p_conn = list_first_entry(&p_fcoe_info->free_list,
589 struct qed_fcoe_conn, list_entry);
590 if (!p_conn)
591 break;
592 list_del(&p_conn->list_entry);
593 qed_fcoe_free_connection(p_hwfn, p_conn);
594 }
595
596 kfree(p_fcoe_info);
597 }
598
599 static int
600 qed_fcoe_acquire_connection(struct qed_hwfn *p_hwfn,
601 struct qed_fcoe_conn *p_in_conn,
602 struct qed_fcoe_conn **p_out_conn)
603 {
604 struct qed_fcoe_conn *p_conn = NULL;
605 int rc = 0;
606 u32 icid;
607
608 spin_lock_bh(&p_hwfn->p_fcoe_info->lock);
609 rc = qed_cxt_acquire_cid(p_hwfn, PROTOCOLID_FCOE, &icid);
610 spin_unlock_bh(&p_hwfn->p_fcoe_info->lock);
611 if (rc)
612 return rc;
613
614 /* Use input connection [if provided] or allocate a new one */
615 if (p_in_conn) {
616 p_conn = p_in_conn;
617 } else {
618 rc = qed_fcoe_allocate_connection(p_hwfn, &p_conn);
619 if (rc) {
620 spin_lock_bh(&p_hwfn->p_fcoe_info->lock);
621 qed_cxt_release_cid(p_hwfn, icid);
622 spin_unlock_bh(&p_hwfn->p_fcoe_info->lock);
623 return rc;
624 }
625 }
626
627 p_conn->icid = icid;
628 p_conn->fw_cid = (p_hwfn->hw_info.opaque_fid << 16) | icid;
629 *p_out_conn = p_conn;
630
631 return rc;
632 }
633
634 static void qed_fcoe_release_connection(struct qed_hwfn *p_hwfn,
635 struct qed_fcoe_conn *p_conn)
636 {
637 spin_lock_bh(&p_hwfn->p_fcoe_info->lock);
638 list_add_tail(&p_conn->list_entry, &p_hwfn->p_fcoe_info->free_list);
639 qed_cxt_release_cid(p_hwfn, p_conn->icid);
640 spin_unlock_bh(&p_hwfn->p_fcoe_info->lock);
641 }
642
643 static void _qed_fcoe_get_tstats(struct qed_hwfn *p_hwfn,
644 struct qed_ptt *p_ptt,
645 struct qed_fcoe_stats *p_stats)
646 {
647 struct fcoe_rx_stat tstats;
648 u32 tstats_addr;
649
650 memset(&tstats, 0, sizeof(tstats));
651 tstats_addr = BAR0_MAP_REG_TSDM_RAM +
652 TSTORM_FCOE_RX_STATS_OFFSET(p_hwfn->rel_pf_id);
653 qed_memcpy_from(p_hwfn, p_ptt, &tstats, tstats_addr, sizeof(tstats));
654
655 p_stats->fcoe_rx_byte_cnt = HILO_64_REGPAIR(tstats.fcoe_rx_byte_cnt);
656 p_stats->fcoe_rx_data_pkt_cnt =
657 HILO_64_REGPAIR(tstats.fcoe_rx_data_pkt_cnt);
658 p_stats->fcoe_rx_xfer_pkt_cnt =
659 HILO_64_REGPAIR(tstats.fcoe_rx_xfer_pkt_cnt);
660 p_stats->fcoe_rx_other_pkt_cnt =
661 HILO_64_REGPAIR(tstats.fcoe_rx_other_pkt_cnt);
662
663 p_stats->fcoe_silent_drop_pkt_cmdq_full_cnt =
664 le32_to_cpu(tstats.fcoe_silent_drop_pkt_cmdq_full_cnt);
665 p_stats->fcoe_silent_drop_pkt_rq_full_cnt =
666 le32_to_cpu(tstats.fcoe_silent_drop_pkt_rq_full_cnt);
667 p_stats->fcoe_silent_drop_pkt_crc_error_cnt =
668 le32_to_cpu(tstats.fcoe_silent_drop_pkt_crc_error_cnt);
669 p_stats->fcoe_silent_drop_pkt_task_invalid_cnt =
670 le32_to_cpu(tstats.fcoe_silent_drop_pkt_task_invalid_cnt);
671 p_stats->fcoe_silent_drop_total_pkt_cnt =
672 le32_to_cpu(tstats.fcoe_silent_drop_total_pkt_cnt);
673 }
674
675 static void _qed_fcoe_get_pstats(struct qed_hwfn *p_hwfn,
676 struct qed_ptt *p_ptt,
677 struct qed_fcoe_stats *p_stats)
678 {
679 struct fcoe_tx_stat pstats;
680 u32 pstats_addr;
681
682 memset(&pstats, 0, sizeof(pstats));
683 pstats_addr = BAR0_MAP_REG_PSDM_RAM +
684 PSTORM_FCOE_TX_STATS_OFFSET(p_hwfn->rel_pf_id);
685 qed_memcpy_from(p_hwfn, p_ptt, &pstats, pstats_addr, sizeof(pstats));
686
687 p_stats->fcoe_tx_byte_cnt = HILO_64_REGPAIR(pstats.fcoe_tx_byte_cnt);
688 p_stats->fcoe_tx_data_pkt_cnt =
689 HILO_64_REGPAIR(pstats.fcoe_tx_data_pkt_cnt);
690 p_stats->fcoe_tx_xfer_pkt_cnt =
691 HILO_64_REGPAIR(pstats.fcoe_tx_xfer_pkt_cnt);
692 p_stats->fcoe_tx_other_pkt_cnt =
693 HILO_64_REGPAIR(pstats.fcoe_tx_other_pkt_cnt);
694 }
695
696 static int qed_fcoe_get_stats(struct qed_hwfn *p_hwfn,
697 struct qed_fcoe_stats *p_stats)
698 {
699 struct qed_ptt *p_ptt;
700
701 memset(p_stats, 0, sizeof(*p_stats));
702
703 p_ptt = qed_ptt_acquire(p_hwfn);
704
705 if (!p_ptt) {
706 DP_ERR(p_hwfn, "Failed to acquire ptt\n");
707 return -EINVAL;
708 }
709
710 _qed_fcoe_get_tstats(p_hwfn, p_ptt, p_stats);
711 _qed_fcoe_get_pstats(p_hwfn, p_ptt, p_stats);
712
713 qed_ptt_release(p_hwfn, p_ptt);
714
715 return 0;
716 }
717
718 struct qed_hash_fcoe_con {
719 struct hlist_node node;
720 struct qed_fcoe_conn *con;
721 };
722
723 static int qed_fill_fcoe_dev_info(struct qed_dev *cdev,
724 struct qed_dev_fcoe_info *info)
725 {
726 struct qed_hwfn *hwfn = QED_LEADING_HWFN(cdev);
727 int rc;
728
729 memset(info, 0, sizeof(*info));
730 rc = qed_fill_dev_info(cdev, &info->common);
731
732 info->primary_dbq_rq_addr =
733 qed_fcoe_get_primary_bdq_prod(hwfn, BDQ_ID_RQ);
734 info->secondary_bdq_rq_addr =
735 qed_fcoe_get_secondary_bdq_prod(hwfn, BDQ_ID_RQ);
736
737 return rc;
738 }
739
740 static void qed_register_fcoe_ops(struct qed_dev *cdev,
741 struct qed_fcoe_cb_ops *ops, void *cookie)
742 {
743 cdev->protocol_ops.fcoe = ops;
744 cdev->ops_cookie = cookie;
745 }
746
747 static struct qed_hash_fcoe_con *qed_fcoe_get_hash(struct qed_dev *cdev,
748 u32 handle)
749 {
750 struct qed_hash_fcoe_con *hash_con = NULL;
751
752 if (!(cdev->flags & QED_FLAG_STORAGE_STARTED))
753 return NULL;
754
755 hash_for_each_possible(cdev->connections, hash_con, node, handle) {
756 if (hash_con->con->icid == handle)
757 break;
758 }
759
760 if (!hash_con || (hash_con->con->icid != handle))
761 return NULL;
762
763 return hash_con;
764 }
765
766 static int qed_fcoe_stop(struct qed_dev *cdev)
767 {
768 int rc;
769
770 if (!(cdev->flags & QED_FLAG_STORAGE_STARTED)) {
771 DP_NOTICE(cdev, "fcoe already stopped\n");
772 return 0;
773 }
774
775 if (!hash_empty(cdev->connections)) {
776 DP_NOTICE(cdev,
777 "Can't stop fcoe - not all connections were returned\n");
778 return -EINVAL;
779 }
780
781 /* Stop the fcoe */
782 rc = qed_sp_fcoe_func_stop(QED_LEADING_HWFN(cdev),
783 QED_SPQ_MODE_EBLOCK, NULL);
784 cdev->flags &= ~QED_FLAG_STORAGE_STARTED;
785
786 return rc;
787 }
788
789 static int qed_fcoe_start(struct qed_dev *cdev, struct qed_fcoe_tid *tasks)
790 {
791 int rc;
792
793 if (cdev->flags & QED_FLAG_STORAGE_STARTED) {
794 DP_NOTICE(cdev, "fcoe already started;\n");
795 return 0;
796 }
797
798 rc = qed_sp_fcoe_func_start(QED_LEADING_HWFN(cdev),
799 QED_SPQ_MODE_EBLOCK, NULL);
800 if (rc) {
801 DP_NOTICE(cdev, "Failed to start fcoe\n");
802 return rc;
803 }
804
805 cdev->flags |= QED_FLAG_STORAGE_STARTED;
806 hash_init(cdev->connections);
807
808 if (tasks) {
809 struct qed_tid_mem *tid_info = kzalloc(sizeof(*tid_info),
810 GFP_ATOMIC);
811
812 if (!tid_info) {
813 DP_NOTICE(cdev,
814 "Failed to allocate tasks information\n");
815 qed_fcoe_stop(cdev);
816 return -ENOMEM;
817 }
818
819 rc = qed_cxt_get_tid_mem_info(QED_LEADING_HWFN(cdev), tid_info);
820 if (rc) {
821 DP_NOTICE(cdev, "Failed to gather task information\n");
822 qed_fcoe_stop(cdev);
823 kfree(tid_info);
824 return rc;
825 }
826
827 /* Fill task information */
828 tasks->size = tid_info->tid_size;
829 tasks->num_tids_per_block = tid_info->num_tids_per_block;
830 memcpy(tasks->blocks, tid_info->blocks,
831 MAX_TID_BLOCKS_FCOE * sizeof(u8 *));
832
833 kfree(tid_info);
834 }
835
836 return 0;
837 }
838
839 static int qed_fcoe_acquire_conn(struct qed_dev *cdev,
840 u32 *handle,
841 u32 *fw_cid, void __iomem **p_doorbell)
842 {
843 struct qed_hash_fcoe_con *hash_con;
844 int rc;
845
846 /* Allocate a hashed connection */
847 hash_con = kzalloc(sizeof(*hash_con), GFP_KERNEL);
848 if (!hash_con) {
849 DP_NOTICE(cdev, "Failed to allocate hashed connection\n");
850 return -ENOMEM;
851 }
852
853 /* Acquire the connection */
854 rc = qed_fcoe_acquire_connection(QED_LEADING_HWFN(cdev), NULL,
855 &hash_con->con);
856 if (rc) {
857 DP_NOTICE(cdev, "Failed to acquire Connection\n");
858 kfree(hash_con);
859 return rc;
860 }
861
862 /* Added the connection to hash table */
863 *handle = hash_con->con->icid;
864 *fw_cid = hash_con->con->fw_cid;
865 hash_add(cdev->connections, &hash_con->node, *handle);
866
867 if (p_doorbell)
868 *p_doorbell = qed_fcoe_get_db_addr(QED_LEADING_HWFN(cdev),
869 *handle);
870
871 return 0;
872 }
873
874 static int qed_fcoe_release_conn(struct qed_dev *cdev, u32 handle)
875 {
876 struct qed_hash_fcoe_con *hash_con;
877
878 hash_con = qed_fcoe_get_hash(cdev, handle);
879 if (!hash_con) {
880 DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
881 handle);
882 return -EINVAL;
883 }
884
885 hlist_del(&hash_con->node);
886 qed_fcoe_release_connection(QED_LEADING_HWFN(cdev), hash_con->con);
887 kfree(hash_con);
888
889 return 0;
890 }
891
892 static int qed_fcoe_offload_conn(struct qed_dev *cdev,
893 u32 handle,
894 struct qed_fcoe_params_offload *conn_info)
895 {
896 struct qed_hash_fcoe_con *hash_con;
897 struct qed_fcoe_conn *con;
898
899 hash_con = qed_fcoe_get_hash(cdev, handle);
900 if (!hash_con) {
901 DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
902 handle);
903 return -EINVAL;
904 }
905
906 /* Update the connection with information from the params */
907 con = hash_con->con;
908
909 con->sq_pbl_addr = conn_info->sq_pbl_addr;
910 con->sq_curr_page_addr = conn_info->sq_curr_page_addr;
911 con->sq_next_page_addr = conn_info->sq_next_page_addr;
912 con->tx_max_fc_pay_len = conn_info->tx_max_fc_pay_len;
913 con->e_d_tov_timer_val = conn_info->e_d_tov_timer_val;
914 con->rec_tov_timer_val = conn_info->rec_tov_timer_val;
915 con->rx_max_fc_pay_len = conn_info->rx_max_fc_pay_len;
916 con->vlan_tag = conn_info->vlan_tag;
917 con->max_conc_seqs_c3 = conn_info->max_conc_seqs_c3;
918 con->flags = conn_info->flags;
919 con->def_q_idx = conn_info->def_q_idx;
920
921 con->src_mac_addr_hi = (conn_info->src_mac[5] << 8) |
922 conn_info->src_mac[4];
923 con->src_mac_addr_mid = (conn_info->src_mac[3] << 8) |
924 conn_info->src_mac[2];
925 con->src_mac_addr_lo = (conn_info->src_mac[1] << 8) |
926 conn_info->src_mac[0];
927 con->dst_mac_addr_hi = (conn_info->dst_mac[5] << 8) |
928 conn_info->dst_mac[4];
929 con->dst_mac_addr_mid = (conn_info->dst_mac[3] << 8) |
930 conn_info->dst_mac[2];
931 con->dst_mac_addr_lo = (conn_info->dst_mac[1] << 8) |
932 conn_info->dst_mac[0];
933
934 con->s_id.addr_hi = conn_info->s_id.addr_hi;
935 con->s_id.addr_mid = conn_info->s_id.addr_mid;
936 con->s_id.addr_lo = conn_info->s_id.addr_lo;
937 con->d_id.addr_hi = conn_info->d_id.addr_hi;
938 con->d_id.addr_mid = conn_info->d_id.addr_mid;
939 con->d_id.addr_lo = conn_info->d_id.addr_lo;
940
941 return qed_sp_fcoe_conn_offload(QED_LEADING_HWFN(cdev), con,
942 QED_SPQ_MODE_EBLOCK, NULL);
943 }
944
945 static int qed_fcoe_destroy_conn(struct qed_dev *cdev,
946 u32 handle, dma_addr_t terminate_params)
947 {
948 struct qed_hash_fcoe_con *hash_con;
949 struct qed_fcoe_conn *con;
950
951 hash_con = qed_fcoe_get_hash(cdev, handle);
952 if (!hash_con) {
953 DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
954 handle);
955 return -EINVAL;
956 }
957
958 /* Update the connection with information from the params */
959 con = hash_con->con;
960 con->terminate_params = terminate_params;
961
962 return qed_sp_fcoe_conn_destroy(QED_LEADING_HWFN(cdev), con,
963 QED_SPQ_MODE_EBLOCK, NULL);
964 }
965
966 static int qed_fcoe_stats(struct qed_dev *cdev, struct qed_fcoe_stats *stats)
967 {
968 return qed_fcoe_get_stats(QED_LEADING_HWFN(cdev), stats);
969 }
970
971 void qed_get_protocol_stats_fcoe(struct qed_dev *cdev,
972 struct qed_mcp_fcoe_stats *stats)
973 {
974 struct qed_fcoe_stats proto_stats;
975
976 /* Retrieve FW statistics */
977 memset(&proto_stats, 0, sizeof(proto_stats));
978 if (qed_fcoe_stats(cdev, &proto_stats)) {
979 DP_VERBOSE(cdev, QED_MSG_STORAGE,
980 "Failed to collect FCoE statistics\n");
981 return;
982 }
983
984 /* Translate FW statistics into struct */
985 stats->rx_pkts = proto_stats.fcoe_rx_data_pkt_cnt +
986 proto_stats.fcoe_rx_xfer_pkt_cnt +
987 proto_stats.fcoe_rx_other_pkt_cnt;
988 stats->tx_pkts = proto_stats.fcoe_tx_data_pkt_cnt +
989 proto_stats.fcoe_tx_xfer_pkt_cnt +
990 proto_stats.fcoe_tx_other_pkt_cnt;
991 stats->fcs_err = proto_stats.fcoe_silent_drop_pkt_crc_error_cnt;
992
993 /* Request protocol driver to fill-in the rest */
994 if (cdev->protocol_ops.fcoe && cdev->ops_cookie) {
995 struct qed_fcoe_cb_ops *ops = cdev->protocol_ops.fcoe;
996 void *cookie = cdev->ops_cookie;
997
998 if (ops->get_login_failures)
999 stats->login_failure = ops->get_login_failures(cookie);
1000 }
1001 }
1002
1003 static const struct qed_fcoe_ops qed_fcoe_ops_pass = {
1004 .common = &qed_common_ops_pass,
1005 .ll2 = &qed_ll2_ops_pass,
1006 .fill_dev_info = &qed_fill_fcoe_dev_info,
1007 .start = &qed_fcoe_start,
1008 .stop = &qed_fcoe_stop,
1009 .register_ops = &qed_register_fcoe_ops,
1010 .acquire_conn = &qed_fcoe_acquire_conn,
1011 .release_conn = &qed_fcoe_release_conn,
1012 .offload_conn = &qed_fcoe_offload_conn,
1013 .destroy_conn = &qed_fcoe_destroy_conn,
1014 .get_stats = &qed_fcoe_stats,
1015 };
1016
1017 const struct qed_fcoe_ops *qed_get_fcoe_ops(void)
1018 {
1019 return &qed_fcoe_ops_pass;
1020 }
1021 EXPORT_SYMBOL(qed_get_fcoe_ops);
1022
1023 void qed_put_fcoe_ops(void)
1024 {
1025 }
1026 EXPORT_SYMBOL(qed_put_fcoe_ops);
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