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1// SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
2/* QLogic qed NIC Driver
3 * Copyright (c) 2015-2017 QLogic Corporation
4 * Copyright (c) 2019-2020 Marvell International Ltd.
5 */
6
7#include <linux/types.h>
8#include <asm/byteorder.h>
9#include <asm/param.h>
10#include <linux/delay.h>
11#include <linux/dma-mapping.h>
12#include <linux/interrupt.h>
13#include <linux/kernel.h>
14#include <linux/log2.h>
15#include <linux/module.h>
16#include <linux/pci.h>
17#include <linux/slab.h>
18#include <linux/stddef.h>
19#include <linux/string.h>
20#include <linux/workqueue.h>
21#include <linux/errno.h>
22#include <linux/list.h>
23#include <linux/spinlock.h>
24#define __PREVENT_DUMP_MEM_ARR__
25#define __PREVENT_PXP_GLOBAL_WIN__
26#include "qed.h"
27#include "qed_cxt.h"
28#include "qed_dev_api.h"
29#include "qed_fcoe.h"
30#include "qed_hsi.h"
31#include "qed_hw.h"
32#include "qed_int.h"
33#include "qed_iro_hsi.h"
34#include "qed_ll2.h"
35#include "qed_mcp.h"
36#include "qed_reg_addr.h"
37#include "qed_sp.h"
38#include "qed_sriov.h"
39#include <linux/qed/qed_fcoe_if.h>
40
41struct qed_fcoe_conn {
42 struct list_head list_entry;
43 bool free_on_delete;
44
45 u16 conn_id;
46 u32 icid;
47 u32 fw_cid;
48 u8 layer_code;
49
50 dma_addr_t sq_pbl_addr;
51 dma_addr_t sq_curr_page_addr;
52 dma_addr_t sq_next_page_addr;
53 dma_addr_t xferq_pbl_addr;
54 void *xferq_pbl_addr_virt_addr;
55 dma_addr_t xferq_addr[4];
56 void *xferq_addr_virt_addr[4];
57 dma_addr_t confq_pbl_addr;
58 void *confq_pbl_addr_virt_addr;
59 dma_addr_t confq_addr[2];
60 void *confq_addr_virt_addr[2];
61
62 dma_addr_t terminate_params;
63
64 u16 dst_mac_addr_lo;
65 u16 dst_mac_addr_mid;
66 u16 dst_mac_addr_hi;
67 u16 src_mac_addr_lo;
68 u16 src_mac_addr_mid;
69 u16 src_mac_addr_hi;
70
71 u16 tx_max_fc_pay_len;
72 u16 e_d_tov_timer_val;
73 u16 rec_tov_timer_val;
74 u16 rx_max_fc_pay_len;
75 u16 vlan_tag;
76 u16 physical_q0;
77
78 struct fc_addr_nw s_id;
79 u8 max_conc_seqs_c3;
80 struct fc_addr_nw d_id;
81 u8 flags;
82 u8 def_q_idx;
83};
84
85static int
86qed_sp_fcoe_func_start(struct qed_hwfn *p_hwfn,
87 enum spq_mode comp_mode,
88 struct qed_spq_comp_cb *p_comp_addr)
89{
90 struct qed_fcoe_pf_params *fcoe_pf_params = NULL;
91 struct fcoe_init_ramrod_params *p_ramrod = NULL;
92 struct fcoe_init_func_ramrod_data *p_data;
93 struct fcoe_conn_context *p_cxt = NULL;
94 struct qed_spq_entry *p_ent = NULL;
95 struct qed_sp_init_data init_data;
96 struct qed_cxt_info cxt_info;
97 u32 dummy_cid;
98 int rc = 0;
99 __le16 tmp;
100 u8 i;
101
102 /* Get SPQ entry */
103 memset(&init_data, 0, sizeof(init_data));
104 init_data.cid = qed_spq_get_cid(p_hwfn);
105 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
106 init_data.comp_mode = comp_mode;
107 init_data.p_comp_data = p_comp_addr;
108
109 rc = qed_sp_init_request(p_hwfn, &p_ent,
110 FCOE_RAMROD_CMD_ID_INIT_FUNC,
111 PROTOCOLID_FCOE, &init_data);
112 if (rc)
113 return rc;
114
115 p_ramrod = &p_ent->ramrod.fcoe_init;
116 p_data = &p_ramrod->init_ramrod_data;
117 fcoe_pf_params = &p_hwfn->pf_params.fcoe_pf_params;
118
119 /* Sanity */
120 if (fcoe_pf_params->num_cqs > p_hwfn->hw_info.feat_num[QED_FCOE_CQ]) {
121 DP_ERR(p_hwfn,
122 "Cannot satisfy CQ amount. CQs requested %d, CQs available %d. Aborting function start\n",
123 fcoe_pf_params->num_cqs,
124 p_hwfn->hw_info.feat_num[QED_FCOE_CQ]);
125 rc = -EINVAL;
126 goto err;
127 }
128
129 p_data->mtu = cpu_to_le16(fcoe_pf_params->mtu);
130 tmp = cpu_to_le16(fcoe_pf_params->sq_num_pbl_pages);
131 p_data->sq_num_pages_in_pbl = tmp;
132
133 rc = qed_cxt_acquire_cid(p_hwfn, PROTOCOLID_FCOE, &dummy_cid);
134 if (rc)
135 goto err;
136
137 cxt_info.iid = dummy_cid;
138 rc = qed_cxt_get_cid_info(p_hwfn, &cxt_info);
139 if (rc) {
140 DP_NOTICE(p_hwfn, "Cannot find context info for dummy cid=%d\n",
141 dummy_cid);
142 goto err;
143 }
144 p_cxt = cxt_info.p_cxt;
145 memset(p_cxt, 0, sizeof(*p_cxt));
146
147 SET_FIELD(p_cxt->tstorm_ag_context.flags3,
148 TSTORM_FCOE_CONN_AG_CTX_DUMMY_TIMER_CF_EN, 1);
149
150 fcoe_pf_params->dummy_icid = (u16)dummy_cid;
151
152 tmp = cpu_to_le16(fcoe_pf_params->num_tasks);
153 p_data->func_params.num_tasks = tmp;
154 p_data->func_params.log_page_size = fcoe_pf_params->log_page_size;
155 p_data->func_params.debug_mode = fcoe_pf_params->debug_mode;
156
157 DMA_REGPAIR_LE(p_data->q_params.glbl_q_params_addr,
158 fcoe_pf_params->glbl_q_params_addr);
159
160 tmp = cpu_to_le16(fcoe_pf_params->cq_num_entries);
161 p_data->q_params.cq_num_entries = tmp;
162
163 tmp = cpu_to_le16(fcoe_pf_params->cmdq_num_entries);
164 p_data->q_params.cmdq_num_entries = tmp;
165
166 p_data->q_params.num_queues = fcoe_pf_params->num_cqs;
167
168 tmp = (__force __le16)p_hwfn->hw_info.resc_start[QED_CMDQS_CQS];
169 p_data->q_params.queue_relative_offset = (__force u8)tmp;
170
171 for (i = 0; i < fcoe_pf_params->num_cqs; i++) {
172 tmp = cpu_to_le16(qed_get_igu_sb_id(p_hwfn, i));
173 p_data->q_params.cq_cmdq_sb_num_arr[i] = tmp;
174 }
175
176 p_data->q_params.cq_sb_pi = fcoe_pf_params->gl_rq_pi;
177 p_data->q_params.cmdq_sb_pi = fcoe_pf_params->gl_cmd_pi;
178
179 p_data->q_params.bdq_resource_id = (u8)RESC_START(p_hwfn, QED_BDQ);
180
181 DMA_REGPAIR_LE(p_data->q_params.bdq_pbl_base_address[BDQ_ID_RQ],
182 fcoe_pf_params->bdq_pbl_base_addr[BDQ_ID_RQ]);
183 p_data->q_params.bdq_pbl_num_entries[BDQ_ID_RQ] =
184 fcoe_pf_params->bdq_pbl_num_entries[BDQ_ID_RQ];
185 tmp = cpu_to_le16(fcoe_pf_params->bdq_xoff_threshold[BDQ_ID_RQ]);
186 p_data->q_params.bdq_xoff_threshold[BDQ_ID_RQ] = tmp;
187 tmp = cpu_to_le16(fcoe_pf_params->bdq_xon_threshold[BDQ_ID_RQ]);
188 p_data->q_params.bdq_xon_threshold[BDQ_ID_RQ] = tmp;
189
190 DMA_REGPAIR_LE(p_data->q_params.bdq_pbl_base_address[BDQ_ID_IMM_DATA],
191 fcoe_pf_params->bdq_pbl_base_addr[BDQ_ID_IMM_DATA]);
192 p_data->q_params.bdq_pbl_num_entries[BDQ_ID_IMM_DATA] =
193 fcoe_pf_params->bdq_pbl_num_entries[BDQ_ID_IMM_DATA];
194 tmp = cpu_to_le16(fcoe_pf_params->bdq_xoff_threshold[BDQ_ID_IMM_DATA]);
195 p_data->q_params.bdq_xoff_threshold[BDQ_ID_IMM_DATA] = tmp;
196 tmp = cpu_to_le16(fcoe_pf_params->bdq_xon_threshold[BDQ_ID_IMM_DATA]);
197 p_data->q_params.bdq_xon_threshold[BDQ_ID_IMM_DATA] = tmp;
198 tmp = cpu_to_le16(fcoe_pf_params->rq_buffer_size);
199 p_data->q_params.rq_buffer_size = tmp;
200
201 if (fcoe_pf_params->is_target) {
202 SET_FIELD(p_data->q_params.q_validity,
203 SCSI_INIT_FUNC_QUEUES_RQ_VALID, 1);
204 if (p_data->q_params.bdq_pbl_num_entries[BDQ_ID_IMM_DATA])
205 SET_FIELD(p_data->q_params.q_validity,
206 SCSI_INIT_FUNC_QUEUES_IMM_DATA_VALID, 1);
207 SET_FIELD(p_data->q_params.q_validity,
208 SCSI_INIT_FUNC_QUEUES_CMD_VALID, 1);
209 } else {
210 SET_FIELD(p_data->q_params.q_validity,
211 SCSI_INIT_FUNC_QUEUES_RQ_VALID, 1);
212 }
213
214 rc = qed_spq_post(p_hwfn, p_ent, NULL);
215
216 return rc;
217
218err:
219 qed_sp_destroy_request(p_hwfn, p_ent);
220 return rc;
221}
222
223static int
224qed_sp_fcoe_conn_offload(struct qed_hwfn *p_hwfn,
225 struct qed_fcoe_conn *p_conn,
226 enum spq_mode comp_mode,
227 struct qed_spq_comp_cb *p_comp_addr)
228{
229 struct fcoe_conn_offload_ramrod_params *p_ramrod = NULL;
230 struct fcoe_conn_offload_ramrod_data *p_data;
231 struct qed_spq_entry *p_ent = NULL;
232 struct qed_sp_init_data init_data;
233 u16 physical_q0;
234 __le16 tmp;
235 int rc;
236
237 /* Get SPQ entry */
238 memset(&init_data, 0, sizeof(init_data));
239 init_data.cid = p_conn->icid;
240 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
241 init_data.comp_mode = comp_mode;
242 init_data.p_comp_data = p_comp_addr;
243
244 rc = qed_sp_init_request(p_hwfn, &p_ent,
245 FCOE_RAMROD_CMD_ID_OFFLOAD_CONN,
246 PROTOCOLID_FCOE, &init_data);
247 if (rc)
248 return rc;
249
250 p_ramrod = &p_ent->ramrod.fcoe_conn_ofld;
251 p_data = &p_ramrod->offload_ramrod_data;
252
253 /* Transmission PQ is the first of the PF */
254 physical_q0 = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_OFLD);
255 p_conn->physical_q0 = physical_q0;
256 p_data->physical_q0 = cpu_to_le16(physical_q0);
257
258 p_data->conn_id = cpu_to_le16(p_conn->conn_id);
259 DMA_REGPAIR_LE(p_data->sq_pbl_addr, p_conn->sq_pbl_addr);
260 DMA_REGPAIR_LE(p_data->sq_curr_page_addr, p_conn->sq_curr_page_addr);
261 DMA_REGPAIR_LE(p_data->sq_next_page_addr, p_conn->sq_next_page_addr);
262 DMA_REGPAIR_LE(p_data->xferq_pbl_addr, p_conn->xferq_pbl_addr);
263 DMA_REGPAIR_LE(p_data->xferq_curr_page_addr, p_conn->xferq_addr[0]);
264 DMA_REGPAIR_LE(p_data->xferq_next_page_addr, p_conn->xferq_addr[1]);
265
266 DMA_REGPAIR_LE(p_data->respq_pbl_addr, p_conn->confq_pbl_addr);
267 DMA_REGPAIR_LE(p_data->respq_curr_page_addr, p_conn->confq_addr[0]);
268 DMA_REGPAIR_LE(p_data->respq_next_page_addr, p_conn->confq_addr[1]);
269
270 p_data->dst_mac_addr_lo = cpu_to_le16(p_conn->dst_mac_addr_lo);
271 p_data->dst_mac_addr_mid = cpu_to_le16(p_conn->dst_mac_addr_mid);
272 p_data->dst_mac_addr_hi = cpu_to_le16(p_conn->dst_mac_addr_hi);
273 p_data->src_mac_addr_lo = cpu_to_le16(p_conn->src_mac_addr_lo);
274 p_data->src_mac_addr_mid = cpu_to_le16(p_conn->src_mac_addr_mid);
275 p_data->src_mac_addr_hi = cpu_to_le16(p_conn->src_mac_addr_hi);
276
277 tmp = cpu_to_le16(p_conn->tx_max_fc_pay_len);
278 p_data->tx_max_fc_pay_len = tmp;
279 tmp = cpu_to_le16(p_conn->e_d_tov_timer_val);
280 p_data->e_d_tov_timer_val = tmp;
281 tmp = cpu_to_le16(p_conn->rec_tov_timer_val);
282 p_data->rec_rr_tov_timer_val = tmp;
283 tmp = cpu_to_le16(p_conn->rx_max_fc_pay_len);
284 p_data->rx_max_fc_pay_len = tmp;
285
286 p_data->vlan_tag = cpu_to_le16(p_conn->vlan_tag);
287 p_data->s_id.addr_hi = p_conn->s_id.addr_hi;
288 p_data->s_id.addr_mid = p_conn->s_id.addr_mid;
289 p_data->s_id.addr_lo = p_conn->s_id.addr_lo;
290 p_data->max_conc_seqs_c3 = p_conn->max_conc_seqs_c3;
291 p_data->d_id.addr_hi = p_conn->d_id.addr_hi;
292 p_data->d_id.addr_mid = p_conn->d_id.addr_mid;
293 p_data->d_id.addr_lo = p_conn->d_id.addr_lo;
294 p_data->flags = p_conn->flags;
295 if (test_bit(QED_MF_UFP_SPECIFIC, &p_hwfn->cdev->mf_bits))
296 SET_FIELD(p_data->flags,
297 FCOE_CONN_OFFLOAD_RAMROD_DATA_B_SINGLE_VLAN, 1);
298 p_data->def_q_idx = p_conn->def_q_idx;
299
300 return qed_spq_post(p_hwfn, p_ent, NULL);
301}
302
303static int
304qed_sp_fcoe_conn_destroy(struct qed_hwfn *p_hwfn,
305 struct qed_fcoe_conn *p_conn,
306 enum spq_mode comp_mode,
307 struct qed_spq_comp_cb *p_comp_addr)
308{
309 struct fcoe_conn_terminate_ramrod_params *p_ramrod = NULL;
310 struct qed_spq_entry *p_ent = NULL;
311 struct qed_sp_init_data init_data;
312 int rc = 0;
313
314 /* Get SPQ entry */
315 memset(&init_data, 0, sizeof(init_data));
316 init_data.cid = p_conn->icid;
317 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
318 init_data.comp_mode = comp_mode;
319 init_data.p_comp_data = p_comp_addr;
320
321 rc = qed_sp_init_request(p_hwfn, &p_ent,
322 FCOE_RAMROD_CMD_ID_TERMINATE_CONN,
323 PROTOCOLID_FCOE, &init_data);
324 if (rc)
325 return rc;
326
327 p_ramrod = &p_ent->ramrod.fcoe_conn_terminate;
328 DMA_REGPAIR_LE(p_ramrod->terminate_ramrod_data.terminate_params_addr,
329 p_conn->terminate_params);
330
331 return qed_spq_post(p_hwfn, p_ent, NULL);
332}
333
334static int
335qed_sp_fcoe_func_stop(struct qed_hwfn *p_hwfn,
336 struct qed_ptt *p_ptt,
337 enum spq_mode comp_mode,
338 struct qed_spq_comp_cb *p_comp_addr)
339{
340 struct qed_spq_entry *p_ent = NULL;
341 struct qed_sp_init_data init_data;
342 u32 active_segs = 0;
343 int rc = 0;
344
345 /* Get SPQ entry */
346 memset(&init_data, 0, sizeof(init_data));
347 init_data.cid = p_hwfn->pf_params.fcoe_pf_params.dummy_icid;
348 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
349 init_data.comp_mode = comp_mode;
350 init_data.p_comp_data = p_comp_addr;
351
352 rc = qed_sp_init_request(p_hwfn, &p_ent,
353 FCOE_RAMROD_CMD_ID_DESTROY_FUNC,
354 PROTOCOLID_FCOE, &init_data);
355 if (rc)
356 return rc;
357
358 active_segs = qed_rd(p_hwfn, p_ptt, TM_REG_PF_ENABLE_TASK);
359 active_segs &= ~BIT(QED_CXT_FCOE_TID_SEG);
360 qed_wr(p_hwfn, p_ptt, TM_REG_PF_ENABLE_TASK, active_segs);
361
362 return qed_spq_post(p_hwfn, p_ent, NULL);
363}
364
365static int
366qed_fcoe_allocate_connection(struct qed_hwfn *p_hwfn,
367 struct qed_fcoe_conn **p_out_conn)
368{
369 struct qed_fcoe_conn *p_conn = NULL;
370 void *p_addr;
371 u32 i;
372
373 spin_lock_bh(&p_hwfn->p_fcoe_info->lock);
374 if (!list_empty(&p_hwfn->p_fcoe_info->free_list))
375 p_conn =
376 list_first_entry(&p_hwfn->p_fcoe_info->free_list,
377 struct qed_fcoe_conn, list_entry);
378 if (p_conn) {
379 list_del(&p_conn->list_entry);
380 spin_unlock_bh(&p_hwfn->p_fcoe_info->lock);
381 *p_out_conn = p_conn;
382 return 0;
383 }
384 spin_unlock_bh(&p_hwfn->p_fcoe_info->lock);
385
386 p_conn = kzalloc(sizeof(*p_conn), GFP_KERNEL);
387 if (!p_conn)
388 return -ENOMEM;
389
390 p_addr = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev,
391 QED_CHAIN_PAGE_SIZE,
392 &p_conn->xferq_pbl_addr, GFP_KERNEL);
393 if (!p_addr)
394 goto nomem_pbl_xferq;
395 p_conn->xferq_pbl_addr_virt_addr = p_addr;
396
397 for (i = 0; i < ARRAY_SIZE(p_conn->xferq_addr); i++) {
398 p_addr = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev,
399 QED_CHAIN_PAGE_SIZE,
400 &p_conn->xferq_addr[i], GFP_KERNEL);
401 if (!p_addr)
402 goto nomem_xferq;
403 p_conn->xferq_addr_virt_addr[i] = p_addr;
404
405 p_addr = p_conn->xferq_pbl_addr_virt_addr;
406 ((dma_addr_t *)p_addr)[i] = p_conn->xferq_addr[i];
407 }
408
409 p_addr = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev,
410 QED_CHAIN_PAGE_SIZE,
411 &p_conn->confq_pbl_addr, GFP_KERNEL);
412 if (!p_addr)
413 goto nomem_xferq;
414 p_conn->confq_pbl_addr_virt_addr = p_addr;
415
416 for (i = 0; i < ARRAY_SIZE(p_conn->confq_addr); i++) {
417 p_addr = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev,
418 QED_CHAIN_PAGE_SIZE,
419 &p_conn->confq_addr[i], GFP_KERNEL);
420 if (!p_addr)
421 goto nomem_confq;
422 p_conn->confq_addr_virt_addr[i] = p_addr;
423
424 p_addr = p_conn->confq_pbl_addr_virt_addr;
425 ((dma_addr_t *)p_addr)[i] = p_conn->confq_addr[i];
426 }
427
428 p_conn->free_on_delete = true;
429 *p_out_conn = p_conn;
430 return 0;
431
432nomem_confq:
433 dma_free_coherent(&p_hwfn->cdev->pdev->dev,
434 QED_CHAIN_PAGE_SIZE,
435 p_conn->confq_pbl_addr_virt_addr,
436 p_conn->confq_pbl_addr);
437 for (i = 0; i < ARRAY_SIZE(p_conn->confq_addr); i++)
438 if (p_conn->confq_addr_virt_addr[i])
439 dma_free_coherent(&p_hwfn->cdev->pdev->dev,
440 QED_CHAIN_PAGE_SIZE,
441 p_conn->confq_addr_virt_addr[i],
442 p_conn->confq_addr[i]);
443nomem_xferq:
444 dma_free_coherent(&p_hwfn->cdev->pdev->dev,
445 QED_CHAIN_PAGE_SIZE,
446 p_conn->xferq_pbl_addr_virt_addr,
447 p_conn->xferq_pbl_addr);
448 for (i = 0; i < ARRAY_SIZE(p_conn->xferq_addr); i++)
449 if (p_conn->xferq_addr_virt_addr[i])
450 dma_free_coherent(&p_hwfn->cdev->pdev->dev,
451 QED_CHAIN_PAGE_SIZE,
452 p_conn->xferq_addr_virt_addr[i],
453 p_conn->xferq_addr[i]);
454nomem_pbl_xferq:
455 kfree(p_conn);
456 return -ENOMEM;
457}
458
459static void qed_fcoe_free_connection(struct qed_hwfn *p_hwfn,
460 struct qed_fcoe_conn *p_conn)
461{
462 u32 i;
463
464 if (!p_conn)
465 return;
466
467 if (p_conn->confq_pbl_addr_virt_addr)
468 dma_free_coherent(&p_hwfn->cdev->pdev->dev,
469 QED_CHAIN_PAGE_SIZE,
470 p_conn->confq_pbl_addr_virt_addr,
471 p_conn->confq_pbl_addr);
472
473 for (i = 0; i < ARRAY_SIZE(p_conn->confq_addr); i++) {
474 if (!p_conn->confq_addr_virt_addr[i])
475 continue;
476 dma_free_coherent(&p_hwfn->cdev->pdev->dev,
477 QED_CHAIN_PAGE_SIZE,
478 p_conn->confq_addr_virt_addr[i],
479 p_conn->confq_addr[i]);
480 }
481
482 if (p_conn->xferq_pbl_addr_virt_addr)
483 dma_free_coherent(&p_hwfn->cdev->pdev->dev,
484 QED_CHAIN_PAGE_SIZE,
485 p_conn->xferq_pbl_addr_virt_addr,
486 p_conn->xferq_pbl_addr);
487
488 for (i = 0; i < ARRAY_SIZE(p_conn->xferq_addr); i++) {
489 if (!p_conn->xferq_addr_virt_addr[i])
490 continue;
491 dma_free_coherent(&p_hwfn->cdev->pdev->dev,
492 QED_CHAIN_PAGE_SIZE,
493 p_conn->xferq_addr_virt_addr[i],
494 p_conn->xferq_addr[i]);
495 }
496 kfree(p_conn);
497}
498
499static void __iomem *qed_fcoe_get_db_addr(struct qed_hwfn *p_hwfn, u32 cid)
500{
501 return (u8 __iomem *)p_hwfn->doorbells +
502 qed_db_addr(cid, DQ_DEMS_LEGACY);
503}
504
505static void __iomem *qed_fcoe_get_primary_bdq_prod(struct qed_hwfn *p_hwfn,
506 u8 bdq_id)
507{
508 if (RESC_NUM(p_hwfn, QED_BDQ)) {
509 return (u8 __iomem *)p_hwfn->regview +
510 GET_GTT_BDQ_REG_ADDR(GTT_BAR0_MAP_REG_MSDM_RAM,
511 MSTORM_SCSI_BDQ_EXT_PROD,
512 RESC_START(p_hwfn, QED_BDQ), bdq_id);
513 } else {
514 DP_NOTICE(p_hwfn, "BDQ is not allocated!\n");
515 return NULL;
516 }
517}
518
519static void __iomem *qed_fcoe_get_secondary_bdq_prod(struct qed_hwfn *p_hwfn,
520 u8 bdq_id)
521{
522 if (RESC_NUM(p_hwfn, QED_BDQ)) {
523 return (u8 __iomem *)p_hwfn->regview +
524 GET_GTT_BDQ_REG_ADDR(GTT_BAR0_MAP_REG_TSDM_RAM,
525 TSTORM_SCSI_BDQ_EXT_PROD,
526 RESC_START(p_hwfn, QED_BDQ), bdq_id);
527 } else {
528 DP_NOTICE(p_hwfn, "BDQ is not allocated!\n");
529 return NULL;
530 }
531}
532
533int qed_fcoe_alloc(struct qed_hwfn *p_hwfn)
534{
535 struct qed_fcoe_info *p_fcoe_info;
536
537 /* Allocate LL2's set struct */
538 p_fcoe_info = kzalloc(sizeof(*p_fcoe_info), GFP_KERNEL);
539 if (!p_fcoe_info) {
540 DP_NOTICE(p_hwfn, "Failed to allocate qed_fcoe_info'\n");
541 return -ENOMEM;
542 }
543 INIT_LIST_HEAD(&p_fcoe_info->free_list);
544
545 p_hwfn->p_fcoe_info = p_fcoe_info;
546 return 0;
547}
548
549void qed_fcoe_setup(struct qed_hwfn *p_hwfn)
550{
551 struct fcoe_task_context *p_task_ctx = NULL;
552 u32 i, lc;
553 int rc;
554
555 spin_lock_init(&p_hwfn->p_fcoe_info->lock);
556 for (i = 0; i < p_hwfn->pf_params.fcoe_pf_params.num_tasks; i++) {
557 rc = qed_cxt_get_task_ctx(p_hwfn, i,
558 QED_CTX_WORKING_MEM,
559 (void **)&p_task_ctx);
560 if (rc)
561 continue;
562
563 memset(p_task_ctx, 0, sizeof(struct fcoe_task_context));
564
565 lc = 0;
566 SET_FIELD(lc, TIMERS_CONTEXT_VALIDLC0, 1);
567 p_task_ctx->timer_context.logical_client_0 = cpu_to_le32(lc);
568
569 lc = 0;
570 SET_FIELD(lc, TIMERS_CONTEXT_VALIDLC1, 1);
571 p_task_ctx->timer_context.logical_client_1 = cpu_to_le32(lc);
572
573 SET_FIELD(p_task_ctx->tstorm_ag_context.flags0,
574 TSTORM_FCOE_TASK_AG_CTX_CONNECTION_TYPE, 1);
575 }
576}
577
578void qed_fcoe_free(struct qed_hwfn *p_hwfn)
579{
580 struct qed_fcoe_conn *p_conn = NULL;
581
582 if (!p_hwfn->p_fcoe_info)
583 return;
584
585 while (!list_empty(&p_hwfn->p_fcoe_info->free_list)) {
586 p_conn = list_first_entry(&p_hwfn->p_fcoe_info->free_list,
587 struct qed_fcoe_conn, list_entry);
588 if (!p_conn)
589 break;
590 list_del(&p_conn->list_entry);
591 qed_fcoe_free_connection(p_hwfn, p_conn);
592 }
593
594 kfree(p_hwfn->p_fcoe_info);
595 p_hwfn->p_fcoe_info = NULL;
596}
597
598static int
599qed_fcoe_acquire_connection(struct qed_hwfn *p_hwfn,
600 struct qed_fcoe_conn *p_in_conn,
601 struct qed_fcoe_conn **p_out_conn)
602{
603 struct qed_fcoe_conn *p_conn = NULL;
604 int rc = 0;
605 u32 icid;
606
607 spin_lock_bh(&p_hwfn->p_fcoe_info->lock);
608 rc = qed_cxt_acquire_cid(p_hwfn, PROTOCOLID_FCOE, &icid);
609 spin_unlock_bh(&p_hwfn->p_fcoe_info->lock);
610 if (rc)
611 return rc;
612
613 /* Use input connection [if provided] or allocate a new one */
614 if (p_in_conn) {
615 p_conn = p_in_conn;
616 } else {
617 rc = qed_fcoe_allocate_connection(p_hwfn, &p_conn);
618 if (rc) {
619 spin_lock_bh(&p_hwfn->p_fcoe_info->lock);
620 qed_cxt_release_cid(p_hwfn, icid);
621 spin_unlock_bh(&p_hwfn->p_fcoe_info->lock);
622 return rc;
623 }
624 }
625
626 p_conn->icid = icid;
627 p_conn->fw_cid = (p_hwfn->hw_info.opaque_fid << 16) | icid;
628 *p_out_conn = p_conn;
629
630 return rc;
631}
632
633static void qed_fcoe_release_connection(struct qed_hwfn *p_hwfn,
634 struct qed_fcoe_conn *p_conn)
635{
636 spin_lock_bh(&p_hwfn->p_fcoe_info->lock);
637 list_add_tail(&p_conn->list_entry, &p_hwfn->p_fcoe_info->free_list);
638 qed_cxt_release_cid(p_hwfn, p_conn->icid);
639 spin_unlock_bh(&p_hwfn->p_fcoe_info->lock);
640}
641
642static void _qed_fcoe_get_tstats(struct qed_hwfn *p_hwfn,
643 struct qed_ptt *p_ptt,
644 struct qed_fcoe_stats *p_stats)
645{
646 struct fcoe_rx_stat tstats;
647 u32 tstats_addr;
648
649 memset(&tstats, 0, sizeof(tstats));
650 tstats_addr = BAR0_MAP_REG_TSDM_RAM +
651 TSTORM_FCOE_RX_STATS_OFFSET(p_hwfn->rel_pf_id);
652 qed_memcpy_from(p_hwfn, p_ptt, &tstats, tstats_addr, sizeof(tstats));
653
654 p_stats->fcoe_rx_byte_cnt = HILO_64_REGPAIR(tstats.fcoe_rx_byte_cnt);
655 p_stats->fcoe_rx_data_pkt_cnt =
656 HILO_64_REGPAIR(tstats.fcoe_rx_data_pkt_cnt);
657 p_stats->fcoe_rx_xfer_pkt_cnt =
658 HILO_64_REGPAIR(tstats.fcoe_rx_xfer_pkt_cnt);
659 p_stats->fcoe_rx_other_pkt_cnt =
660 HILO_64_REGPAIR(tstats.fcoe_rx_other_pkt_cnt);
661
662 p_stats->fcoe_silent_drop_pkt_cmdq_full_cnt =
663 le32_to_cpu(tstats.fcoe_silent_drop_pkt_cmdq_full_cnt);
664 p_stats->fcoe_silent_drop_pkt_rq_full_cnt =
665 le32_to_cpu(tstats.fcoe_silent_drop_pkt_rq_full_cnt);
666 p_stats->fcoe_silent_drop_pkt_crc_error_cnt =
667 le32_to_cpu(tstats.fcoe_silent_drop_pkt_crc_error_cnt);
668 p_stats->fcoe_silent_drop_pkt_task_invalid_cnt =
669 le32_to_cpu(tstats.fcoe_silent_drop_pkt_task_invalid_cnt);
670 p_stats->fcoe_silent_drop_total_pkt_cnt =
671 le32_to_cpu(tstats.fcoe_silent_drop_total_pkt_cnt);
672}
673
674static void _qed_fcoe_get_pstats(struct qed_hwfn *p_hwfn,
675 struct qed_ptt *p_ptt,
676 struct qed_fcoe_stats *p_stats)
677{
678 struct fcoe_tx_stat pstats;
679 u32 pstats_addr;
680
681 memset(&pstats, 0, sizeof(pstats));
682 pstats_addr = BAR0_MAP_REG_PSDM_RAM +
683 PSTORM_FCOE_TX_STATS_OFFSET(p_hwfn->rel_pf_id);
684 qed_memcpy_from(p_hwfn, p_ptt, &pstats, pstats_addr, sizeof(pstats));
685
686 p_stats->fcoe_tx_byte_cnt = HILO_64_REGPAIR(pstats.fcoe_tx_byte_cnt);
687 p_stats->fcoe_tx_data_pkt_cnt =
688 HILO_64_REGPAIR(pstats.fcoe_tx_data_pkt_cnt);
689 p_stats->fcoe_tx_xfer_pkt_cnt =
690 HILO_64_REGPAIR(pstats.fcoe_tx_xfer_pkt_cnt);
691 p_stats->fcoe_tx_other_pkt_cnt =
692 HILO_64_REGPAIR(pstats.fcoe_tx_other_pkt_cnt);
693}
694
695static int qed_fcoe_get_stats(struct qed_hwfn *p_hwfn,
696 struct qed_fcoe_stats *p_stats,
697 bool is_atomic)
698{
699 struct qed_ptt *p_ptt;
700
701 memset(p_stats, 0, sizeof(*p_stats));
702
703 p_ptt = qed_ptt_acquire_context(p_hwfn, is_atomic);
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
718struct qed_hash_fcoe_con {
719 struct hlist_node node;
720 struct qed_fcoe_conn *con;
721};
722
723static int qed_fill_fcoe_dev_info(struct qed_dev *cdev,
724 struct qed_dev_fcoe_info *info)
725{
726 struct qed_hwfn *hwfn = QED_AFFIN_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 info->wwpn = hwfn->mcp_info->func_info.wwn_port;
738 info->wwnn = hwfn->mcp_info->func_info.wwn_node;
739
740 info->num_cqs = FEAT_NUM(hwfn, QED_FCOE_CQ);
741
742 return rc;
743}
744
745static void qed_register_fcoe_ops(struct qed_dev *cdev,
746 struct qed_fcoe_cb_ops *ops, void *cookie)
747{
748 cdev->protocol_ops.fcoe = ops;
749 cdev->ops_cookie = cookie;
750}
751
752static struct qed_hash_fcoe_con *qed_fcoe_get_hash(struct qed_dev *cdev,
753 u32 handle)
754{
755 struct qed_hash_fcoe_con *hash_con = NULL;
756
757 if (!(cdev->flags & QED_FLAG_STORAGE_STARTED))
758 return NULL;
759
760 hash_for_each_possible(cdev->connections, hash_con, node, handle) {
761 if (hash_con->con->icid == handle)
762 break;
763 }
764
765 if (!hash_con || (hash_con->con->icid != handle))
766 return NULL;
767
768 return hash_con;
769}
770
771static int qed_fcoe_stop(struct qed_dev *cdev)
772{
773 struct qed_ptt *p_ptt;
774 int rc;
775
776 if (!(cdev->flags & QED_FLAG_STORAGE_STARTED)) {
777 DP_NOTICE(cdev, "fcoe already stopped\n");
778 return 0;
779 }
780
781 if (!hash_empty(cdev->connections)) {
782 DP_NOTICE(cdev,
783 "Can't stop fcoe - not all connections were returned\n");
784 return -EINVAL;
785 }
786
787 p_ptt = qed_ptt_acquire(QED_AFFIN_HWFN(cdev));
788 if (!p_ptt)
789 return -EAGAIN;
790
791 /* Stop the fcoe */
792 rc = qed_sp_fcoe_func_stop(QED_AFFIN_HWFN(cdev), p_ptt,
793 QED_SPQ_MODE_EBLOCK, NULL);
794 cdev->flags &= ~QED_FLAG_STORAGE_STARTED;
795 qed_ptt_release(QED_AFFIN_HWFN(cdev), p_ptt);
796
797 return rc;
798}
799
800static int qed_fcoe_start(struct qed_dev *cdev, struct qed_fcoe_tid *tasks)
801{
802 int rc;
803
804 if (cdev->flags & QED_FLAG_STORAGE_STARTED) {
805 DP_NOTICE(cdev, "fcoe already started;\n");
806 return 0;
807 }
808
809 rc = qed_sp_fcoe_func_start(QED_AFFIN_HWFN(cdev), QED_SPQ_MODE_EBLOCK,
810 NULL);
811 if (rc) {
812 DP_NOTICE(cdev, "Failed to start fcoe\n");
813 return rc;
814 }
815
816 cdev->flags |= QED_FLAG_STORAGE_STARTED;
817 hash_init(cdev->connections);
818
819 if (tasks) {
820 struct qed_tid_mem *tid_info = kzalloc(sizeof(*tid_info),
821 GFP_ATOMIC);
822
823 if (!tid_info) {
824 DP_NOTICE(cdev,
825 "Failed to allocate tasks information\n");
826 qed_fcoe_stop(cdev);
827 return -ENOMEM;
828 }
829
830 rc = qed_cxt_get_tid_mem_info(QED_AFFIN_HWFN(cdev), tid_info);
831 if (rc) {
832 DP_NOTICE(cdev, "Failed to gather task information\n");
833 qed_fcoe_stop(cdev);
834 kfree(tid_info);
835 return rc;
836 }
837
838 /* Fill task information */
839 tasks->size = tid_info->tid_size;
840 tasks->num_tids_per_block = tid_info->num_tids_per_block;
841 memcpy(tasks->blocks, tid_info->blocks,
842 MAX_TID_BLOCKS_FCOE * sizeof(u8 *));
843
844 kfree(tid_info);
845 }
846
847 return 0;
848}
849
850static int qed_fcoe_acquire_conn(struct qed_dev *cdev,
851 u32 *handle,
852 u32 *fw_cid, void __iomem **p_doorbell)
853{
854 struct qed_hash_fcoe_con *hash_con;
855 int rc;
856
857 /* Allocate a hashed connection */
858 hash_con = kzalloc(sizeof(*hash_con), GFP_KERNEL);
859 if (!hash_con) {
860 DP_NOTICE(cdev, "Failed to allocate hashed connection\n");
861 return -ENOMEM;
862 }
863
864 /* Acquire the connection */
865 rc = qed_fcoe_acquire_connection(QED_AFFIN_HWFN(cdev), NULL,
866 &hash_con->con);
867 if (rc) {
868 DP_NOTICE(cdev, "Failed to acquire Connection\n");
869 kfree(hash_con);
870 return rc;
871 }
872
873 /* Added the connection to hash table */
874 *handle = hash_con->con->icid;
875 *fw_cid = hash_con->con->fw_cid;
876 hash_add(cdev->connections, &hash_con->node, *handle);
877
878 if (p_doorbell)
879 *p_doorbell = qed_fcoe_get_db_addr(QED_AFFIN_HWFN(cdev),
880 *handle);
881
882 return 0;
883}
884
885static int qed_fcoe_release_conn(struct qed_dev *cdev, u32 handle)
886{
887 struct qed_hash_fcoe_con *hash_con;
888
889 hash_con = qed_fcoe_get_hash(cdev, handle);
890 if (!hash_con) {
891 DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
892 handle);
893 return -EINVAL;
894 }
895
896 hlist_del(&hash_con->node);
897 qed_fcoe_release_connection(QED_AFFIN_HWFN(cdev), hash_con->con);
898 kfree(hash_con);
899
900 return 0;
901}
902
903static int qed_fcoe_offload_conn(struct qed_dev *cdev,
904 u32 handle,
905 struct qed_fcoe_params_offload *conn_info)
906{
907 struct qed_hash_fcoe_con *hash_con;
908 struct qed_fcoe_conn *con;
909
910 hash_con = qed_fcoe_get_hash(cdev, handle);
911 if (!hash_con) {
912 DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
913 handle);
914 return -EINVAL;
915 }
916
917 /* Update the connection with information from the params */
918 con = hash_con->con;
919
920 con->sq_pbl_addr = conn_info->sq_pbl_addr;
921 con->sq_curr_page_addr = conn_info->sq_curr_page_addr;
922 con->sq_next_page_addr = conn_info->sq_next_page_addr;
923 con->tx_max_fc_pay_len = conn_info->tx_max_fc_pay_len;
924 con->e_d_tov_timer_val = conn_info->e_d_tov_timer_val;
925 con->rec_tov_timer_val = conn_info->rec_tov_timer_val;
926 con->rx_max_fc_pay_len = conn_info->rx_max_fc_pay_len;
927 con->vlan_tag = conn_info->vlan_tag;
928 con->max_conc_seqs_c3 = conn_info->max_conc_seqs_c3;
929 con->flags = conn_info->flags;
930 con->def_q_idx = conn_info->def_q_idx;
931
932 con->src_mac_addr_hi = (conn_info->src_mac[5] << 8) |
933 conn_info->src_mac[4];
934 con->src_mac_addr_mid = (conn_info->src_mac[3] << 8) |
935 conn_info->src_mac[2];
936 con->src_mac_addr_lo = (conn_info->src_mac[1] << 8) |
937 conn_info->src_mac[0];
938 con->dst_mac_addr_hi = (conn_info->dst_mac[5] << 8) |
939 conn_info->dst_mac[4];
940 con->dst_mac_addr_mid = (conn_info->dst_mac[3] << 8) |
941 conn_info->dst_mac[2];
942 con->dst_mac_addr_lo = (conn_info->dst_mac[1] << 8) |
943 conn_info->dst_mac[0];
944
945 con->s_id.addr_hi = conn_info->s_id.addr_hi;
946 con->s_id.addr_mid = conn_info->s_id.addr_mid;
947 con->s_id.addr_lo = conn_info->s_id.addr_lo;
948 con->d_id.addr_hi = conn_info->d_id.addr_hi;
949 con->d_id.addr_mid = conn_info->d_id.addr_mid;
950 con->d_id.addr_lo = conn_info->d_id.addr_lo;
951
952 return qed_sp_fcoe_conn_offload(QED_AFFIN_HWFN(cdev), con,
953 QED_SPQ_MODE_EBLOCK, NULL);
954}
955
956static int qed_fcoe_destroy_conn(struct qed_dev *cdev,
957 u32 handle, dma_addr_t terminate_params)
958{
959 struct qed_hash_fcoe_con *hash_con;
960 struct qed_fcoe_conn *con;
961
962 hash_con = qed_fcoe_get_hash(cdev, handle);
963 if (!hash_con) {
964 DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
965 handle);
966 return -EINVAL;
967 }
968
969 /* Update the connection with information from the params */
970 con = hash_con->con;
971 con->terminate_params = terminate_params;
972
973 return qed_sp_fcoe_conn_destroy(QED_AFFIN_HWFN(cdev), con,
974 QED_SPQ_MODE_EBLOCK, NULL);
975}
976
977static int qed_fcoe_stats_context(struct qed_dev *cdev,
978 struct qed_fcoe_stats *stats,
979 bool is_atomic)
980{
981 return qed_fcoe_get_stats(QED_AFFIN_HWFN(cdev), stats, is_atomic);
982}
983
984static int qed_fcoe_stats(struct qed_dev *cdev, struct qed_fcoe_stats *stats)
985{
986 return qed_fcoe_stats_context(cdev, stats, false);
987}
988
989void qed_get_protocol_stats_fcoe(struct qed_dev *cdev,
990 struct qed_mcp_fcoe_stats *stats,
991 bool is_atomic)
992{
993 struct qed_fcoe_stats proto_stats;
994
995 /* Retrieve FW statistics */
996 memset(&proto_stats, 0, sizeof(proto_stats));
997 if (qed_fcoe_stats_context(cdev, &proto_stats, is_atomic)) {
998 DP_VERBOSE(cdev, QED_MSG_STORAGE,
999 "Failed to collect FCoE statistics\n");
1000 return;
1001 }
1002
1003 /* Translate FW statistics into struct */
1004 stats->rx_pkts = proto_stats.fcoe_rx_data_pkt_cnt +
1005 proto_stats.fcoe_rx_xfer_pkt_cnt +
1006 proto_stats.fcoe_rx_other_pkt_cnt;
1007 stats->tx_pkts = proto_stats.fcoe_tx_data_pkt_cnt +
1008 proto_stats.fcoe_tx_xfer_pkt_cnt +
1009 proto_stats.fcoe_tx_other_pkt_cnt;
1010 stats->fcs_err = proto_stats.fcoe_silent_drop_pkt_crc_error_cnt;
1011
1012 /* Request protocol driver to fill-in the rest */
1013 if (cdev->protocol_ops.fcoe && cdev->ops_cookie) {
1014 struct qed_fcoe_cb_ops *ops = cdev->protocol_ops.fcoe;
1015 void *cookie = cdev->ops_cookie;
1016
1017 if (ops->get_login_failures)
1018 stats->login_failure = ops->get_login_failures(cookie);
1019 }
1020}
1021
1022static const struct qed_fcoe_ops qed_fcoe_ops_pass = {
1023 .common = &qed_common_ops_pass,
1024 .ll2 = &qed_ll2_ops_pass,
1025 .fill_dev_info = &qed_fill_fcoe_dev_info,
1026 .start = &qed_fcoe_start,
1027 .stop = &qed_fcoe_stop,
1028 .register_ops = &qed_register_fcoe_ops,
1029 .acquire_conn = &qed_fcoe_acquire_conn,
1030 .release_conn = &qed_fcoe_release_conn,
1031 .offload_conn = &qed_fcoe_offload_conn,
1032 .destroy_conn = &qed_fcoe_destroy_conn,
1033 .get_stats = &qed_fcoe_stats,
1034};
1035
1036const struct qed_fcoe_ops *qed_get_fcoe_ops(void)
1037{
1038 return &qed_fcoe_ops_pass;
1039}
1040EXPORT_SYMBOL(qed_get_fcoe_ops);
1041
1042void qed_put_fcoe_ops(void)
1043{
1044}
1045EXPORT_SYMBOL(qed_put_fcoe_ops);