1 /* QLogic qed NIC Driver
2 * Copyright (c) 2015-2017 QLogic Corporation
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:
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
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.
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
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/etherdevice.h>
39 #include <linux/interrupt.h>
40 #include <linux/kernel.h>
41 #include <linux/log2.h>
42 #include <linux/module.h>
43 #include <linux/pci.h>
44 #include <linux/slab.h>
45 #include <linux/stddef.h>
46 #include <linux/string.h>
47 #include <linux/workqueue.h>
48 #include <linux/errno.h>
49 #include <linux/list.h>
50 #include <linux/spinlock.h>
51 #include <linux/qed/qed_iscsi_if.h>
54 #include "qed_dev_api.h"
58 #include "qed_iscsi.h"
62 #include "qed_sriov.h"
63 #include "qed_reg_addr.h"
65 struct qed_iscsi_conn {
66 struct list_head list_entry;
77 dma_addr_t sq_pbl_addr;
78 struct qed_chain r2tq;
82 struct tcp_upload_params *tcp_upload_params_virt_addr;
83 dma_addr_t tcp_upload_params_phys_addr;
84 struct scsi_terminate_extra_params *queue_cnts_virt_addr;
85 dma_addr_t queue_cnts_phys_addr;
86 dma_addr_t syn_phy_addr;
88 u16 syn_ip_payload_length;
112 u32 ka_timeout_delta;
113 u32 rt_timeout_delta;
115 u8 snd_wnd_probe_cnt;
130 u16 da_timeout_value;
136 u32 max_recv_pdu_length;
137 u32 max_send_pdu_length;
138 u32 first_seq_length;
143 u8 abortive_dsconnect;
147 qed_iscsi_async_event(struct qed_hwfn *p_hwfn,
149 u16 echo, union event_ring_data *data, u8 fw_return_code)
151 if (p_hwfn->p_iscsi_info->event_cb) {
152 struct qed_iscsi_info *p_iscsi = p_hwfn->p_iscsi_info;
154 return p_iscsi->event_cb(p_iscsi->event_context,
155 fw_event_code, data);
157 DP_NOTICE(p_hwfn, "iSCSI async completion is not set\n");
163 qed_sp_iscsi_func_start(struct qed_hwfn *p_hwfn,
164 enum spq_mode comp_mode,
165 struct qed_spq_comp_cb *p_comp_addr,
166 void *event_context, iscsi_event_cb_t async_event_cb)
168 struct iscsi_init_ramrod_params *p_ramrod = NULL;
169 struct scsi_init_func_queues *p_queue = NULL;
170 struct qed_iscsi_pf_params *p_params = NULL;
171 struct iscsi_spe_func_init *p_init = NULL;
172 struct qed_spq_entry *p_ent = NULL;
173 struct qed_sp_init_data init_data;
180 memset(&init_data, 0, sizeof(init_data));
181 init_data.cid = qed_spq_get_cid(p_hwfn);
182 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
183 init_data.comp_mode = comp_mode;
184 init_data.p_comp_data = p_comp_addr;
186 rc = qed_sp_init_request(p_hwfn, &p_ent,
187 ISCSI_RAMROD_CMD_ID_INIT_FUNC,
188 PROTOCOLID_ISCSI, &init_data);
192 p_ramrod = &p_ent->ramrod.iscsi_init;
193 p_init = &p_ramrod->iscsi_init_spe;
194 p_params = &p_hwfn->pf_params.iscsi_pf_params;
195 p_queue = &p_init->q_params;
198 if (p_params->num_queues > p_hwfn->hw_info.feat_num[QED_ISCSI_CQ]) {
200 "Cannot satisfy CQ amount. Queues requested %d, CQs available %d. Aborting function start\n",
201 p_params->num_queues,
202 p_hwfn->hw_info.feat_num[QED_ISCSI_CQ]);
203 qed_sp_destroy_request(p_hwfn, p_ent);
207 SET_FIELD(p_init->hdr.flags,
208 ISCSI_SLOW_PATH_HDR_LAYER_CODE, ISCSI_SLOW_PATH_LAYER_CODE);
209 p_init->hdr.op_code = ISCSI_RAMROD_CMD_ID_INIT_FUNC;
211 val = p_params->half_way_close_timeout;
212 p_init->half_way_close_timeout = cpu_to_le16(val);
213 p_init->num_sq_pages_in_ring = p_params->num_sq_pages_in_ring;
214 p_init->num_r2tq_pages_in_ring = p_params->num_r2tq_pages_in_ring;
215 p_init->num_uhq_pages_in_ring = p_params->num_uhq_pages_in_ring;
216 p_init->ll2_rx_queue_id = p_hwfn->hw_info.resc_start[QED_LL2_QUEUE] +
217 p_params->ll2_ooo_queue_id;
219 p_init->func_params.log_page_size = p_params->log_page_size;
220 val = p_params->num_tasks;
221 p_init->func_params.num_tasks = cpu_to_le16(val);
222 p_init->debug_mode.flags = p_params->debug_mode;
224 DMA_REGPAIR_LE(p_queue->glbl_q_params_addr,
225 p_params->glbl_q_params_addr);
227 val = p_params->cq_num_entries;
228 p_queue->cq_num_entries = cpu_to_le16(val);
229 val = p_params->cmdq_num_entries;
230 p_queue->cmdq_num_entries = cpu_to_le16(val);
231 p_queue->num_queues = p_params->num_queues;
232 dval = (u8)p_hwfn->hw_info.resc_start[QED_CMDQS_CQS];
233 p_queue->queue_relative_offset = (u8)dval;
234 p_queue->cq_sb_pi = p_params->gl_rq_pi;
235 p_queue->cmdq_sb_pi = p_params->gl_cmd_pi;
237 for (i = 0; i < p_params->num_queues; i++) {
238 val = qed_get_igu_sb_id(p_hwfn, i);
239 p_queue->cq_cmdq_sb_num_arr[i] = cpu_to_le16(val);
242 p_queue->bdq_resource_id = (u8)RESC_START(p_hwfn, QED_BDQ);
244 DMA_REGPAIR_LE(p_queue->bdq_pbl_base_address[BDQ_ID_RQ],
245 p_params->bdq_pbl_base_addr[BDQ_ID_RQ]);
246 p_queue->bdq_pbl_num_entries[BDQ_ID_RQ] =
247 p_params->bdq_pbl_num_entries[BDQ_ID_RQ];
248 val = p_params->bdq_xoff_threshold[BDQ_ID_RQ];
249 p_queue->bdq_xoff_threshold[BDQ_ID_RQ] = cpu_to_le16(val);
250 val = p_params->bdq_xon_threshold[BDQ_ID_RQ];
251 p_queue->bdq_xon_threshold[BDQ_ID_RQ] = cpu_to_le16(val);
253 DMA_REGPAIR_LE(p_queue->bdq_pbl_base_address[BDQ_ID_IMM_DATA],
254 p_params->bdq_pbl_base_addr[BDQ_ID_IMM_DATA]);
255 p_queue->bdq_pbl_num_entries[BDQ_ID_IMM_DATA] =
256 p_params->bdq_pbl_num_entries[BDQ_ID_IMM_DATA];
257 val = p_params->bdq_xoff_threshold[BDQ_ID_IMM_DATA];
258 p_queue->bdq_xoff_threshold[BDQ_ID_IMM_DATA] = cpu_to_le16(val);
259 val = p_params->bdq_xon_threshold[BDQ_ID_IMM_DATA];
260 p_queue->bdq_xon_threshold[BDQ_ID_IMM_DATA] = cpu_to_le16(val);
261 val = p_params->rq_buffer_size;
262 p_queue->rq_buffer_size = cpu_to_le16(val);
263 if (p_params->is_target) {
264 SET_FIELD(p_queue->q_validity,
265 SCSI_INIT_FUNC_QUEUES_RQ_VALID, 1);
266 if (p_queue->bdq_pbl_num_entries[BDQ_ID_IMM_DATA])
267 SET_FIELD(p_queue->q_validity,
268 SCSI_INIT_FUNC_QUEUES_IMM_DATA_VALID, 1);
269 SET_FIELD(p_queue->q_validity,
270 SCSI_INIT_FUNC_QUEUES_CMD_VALID, 1);
272 SET_FIELD(p_queue->q_validity,
273 SCSI_INIT_FUNC_QUEUES_RQ_VALID, 1);
275 p_ramrod->tcp_init.two_msl_timer = cpu_to_le32(p_params->two_msl_timer);
276 val = p_params->tx_sws_timer;
277 p_ramrod->tcp_init.tx_sws_timer = cpu_to_le16(val);
278 p_ramrod->tcp_init.max_fin_rt = p_params->max_fin_rt;
280 p_hwfn->p_iscsi_info->event_context = event_context;
281 p_hwfn->p_iscsi_info->event_cb = async_event_cb;
283 qed_spq_register_async_cb(p_hwfn, PROTOCOLID_ISCSI,
284 qed_iscsi_async_event);
286 return qed_spq_post(p_hwfn, p_ent, NULL);
289 static int qed_sp_iscsi_conn_offload(struct qed_hwfn *p_hwfn,
290 struct qed_iscsi_conn *p_conn,
291 enum spq_mode comp_mode,
292 struct qed_spq_comp_cb *p_comp_addr)
294 struct iscsi_spe_conn_offload *p_ramrod = NULL;
295 struct tcp_offload_params_opt2 *p_tcp2 = NULL;
296 struct tcp_offload_params *p_tcp = NULL;
297 struct qed_spq_entry *p_ent = NULL;
298 struct qed_sp_init_data init_data;
299 dma_addr_t r2tq_pbl_addr;
300 dma_addr_t xhq_pbl_addr;
301 dma_addr_t uhq_pbl_addr;
310 memset(&init_data, 0, sizeof(init_data));
311 init_data.cid = p_conn->icid;
312 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
313 init_data.comp_mode = comp_mode;
314 init_data.p_comp_data = p_comp_addr;
316 rc = qed_sp_init_request(p_hwfn, &p_ent,
317 ISCSI_RAMROD_CMD_ID_OFFLOAD_CONN,
318 PROTOCOLID_ISCSI, &init_data);
322 p_ramrod = &p_ent->ramrod.iscsi_conn_offload;
324 /* Transmission PQ is the first of the PF */
325 physical_q = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_OFLD);
326 p_conn->physical_q0 = cpu_to_le16(physical_q);
327 p_ramrod->iscsi.physical_q0 = cpu_to_le16(physical_q);
329 /* iSCSI Pure-ACK PQ */
330 physical_q = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_ACK);
331 p_conn->physical_q1 = cpu_to_le16(physical_q);
332 p_ramrod->iscsi.physical_q1 = cpu_to_le16(physical_q);
334 p_ramrod->hdr.op_code = ISCSI_RAMROD_CMD_ID_OFFLOAD_CONN;
335 SET_FIELD(p_ramrod->hdr.flags, ISCSI_SLOW_PATH_HDR_LAYER_CODE,
338 p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id);
339 p_ramrod->fw_cid = cpu_to_le32(p_conn->icid);
341 DMA_REGPAIR_LE(p_ramrod->iscsi.sq_pbl_addr, p_conn->sq_pbl_addr);
343 r2tq_pbl_addr = qed_chain_get_pbl_phys(&p_conn->r2tq);
344 DMA_REGPAIR_LE(p_ramrod->iscsi.r2tq_pbl_addr, r2tq_pbl_addr);
346 xhq_pbl_addr = qed_chain_get_pbl_phys(&p_conn->xhq);
347 DMA_REGPAIR_LE(p_ramrod->iscsi.xhq_pbl_addr, xhq_pbl_addr);
349 uhq_pbl_addr = qed_chain_get_pbl_phys(&p_conn->uhq);
350 DMA_REGPAIR_LE(p_ramrod->iscsi.uhq_pbl_addr, uhq_pbl_addr);
352 p_ramrod->iscsi.initial_ack = cpu_to_le32(p_conn->initial_ack);
353 p_ramrod->iscsi.flags = p_conn->offl_flags;
354 p_ramrod->iscsi.default_cq = p_conn->default_cq;
355 p_ramrod->iscsi.stat_sn = cpu_to_le32(p_conn->stat_sn);
357 if (!GET_FIELD(p_ramrod->iscsi.flags,
358 ISCSI_CONN_OFFLOAD_PARAMS_TCP_ON_CHIP_1B)) {
359 p_tcp = &p_ramrod->tcp;
361 p = (u16 *)p_conn->local_mac;
362 p_tcp->local_mac_addr_hi = swab16(get_unaligned(p));
363 p_tcp->local_mac_addr_mid = swab16(get_unaligned(p + 1));
364 p_tcp->local_mac_addr_lo = swab16(get_unaligned(p + 2));
366 p = (u16 *)p_conn->remote_mac;
367 p_tcp->remote_mac_addr_hi = swab16(get_unaligned(p));
368 p_tcp->remote_mac_addr_mid = swab16(get_unaligned(p + 1));
369 p_tcp->remote_mac_addr_lo = swab16(get_unaligned(p + 2));
371 p_tcp->vlan_id = cpu_to_le16(p_conn->vlan_id);
373 p_tcp->flags = cpu_to_le16(p_conn->tcp_flags);
374 p_tcp->ip_version = p_conn->ip_version;
375 for (i = 0; i < 4; i++) {
376 dval = p_conn->remote_ip[i];
377 p_tcp->remote_ip[i] = cpu_to_le32(dval);
378 dval = p_conn->local_ip[i];
379 p_tcp->local_ip[i] = cpu_to_le32(dval);
381 p_tcp->ka_max_probe_cnt = p_conn->ka_max_probe_cnt;
382 p_tcp->dup_ack_theshold = p_conn->dup_ack_theshold;
384 p_tcp->rcv_next = cpu_to_le32(p_conn->rcv_next);
385 p_tcp->snd_una = cpu_to_le32(p_conn->snd_una);
386 p_tcp->snd_next = cpu_to_le32(p_conn->snd_next);
387 p_tcp->snd_max = cpu_to_le32(p_conn->snd_max);
388 p_tcp->snd_wnd = cpu_to_le32(p_conn->snd_wnd);
389 p_tcp->rcv_wnd = cpu_to_le32(p_conn->rcv_wnd);
390 p_tcp->snd_wl1 = cpu_to_le32(p_conn->snd_wl1);
391 p_tcp->cwnd = cpu_to_le32(p_conn->cwnd);
392 p_tcp->ss_thresh = cpu_to_le32(p_conn->ss_thresh);
393 p_tcp->srtt = cpu_to_le16(p_conn->srtt);
394 p_tcp->rtt_var = cpu_to_le16(p_conn->rtt_var);
395 p_tcp->ts_recent = cpu_to_le32(p_conn->ts_recent);
396 p_tcp->ts_recent_age = cpu_to_le32(p_conn->ts_recent_age);
397 p_tcp->total_rt = cpu_to_le32(p_conn->total_rt);
398 dval = p_conn->ka_timeout_delta;
399 p_tcp->ka_timeout_delta = cpu_to_le32(dval);
400 dval = p_conn->rt_timeout_delta;
401 p_tcp->rt_timeout_delta = cpu_to_le32(dval);
402 p_tcp->dup_ack_cnt = p_conn->dup_ack_cnt;
403 p_tcp->snd_wnd_probe_cnt = p_conn->snd_wnd_probe_cnt;
404 p_tcp->ka_probe_cnt = p_conn->ka_probe_cnt;
405 p_tcp->rt_cnt = p_conn->rt_cnt;
406 p_tcp->flow_label = cpu_to_le32(p_conn->flow_label);
407 p_tcp->ka_timeout = cpu_to_le32(p_conn->ka_timeout);
408 p_tcp->ka_interval = cpu_to_le32(p_conn->ka_interval);
409 p_tcp->max_rt_time = cpu_to_le32(p_conn->max_rt_time);
410 dval = p_conn->initial_rcv_wnd;
411 p_tcp->initial_rcv_wnd = cpu_to_le32(dval);
412 p_tcp->ttl = p_conn->ttl;
413 p_tcp->tos_or_tc = p_conn->tos_or_tc;
414 p_tcp->remote_port = cpu_to_le16(p_conn->remote_port);
415 p_tcp->local_port = cpu_to_le16(p_conn->local_port);
416 p_tcp->mss = cpu_to_le16(p_conn->mss);
417 p_tcp->snd_wnd_scale = p_conn->snd_wnd_scale;
418 p_tcp->rcv_wnd_scale = p_conn->rcv_wnd_scale;
419 wval = p_conn->da_timeout_value;
420 p_tcp->da_timeout_value = cpu_to_le16(wval);
421 p_tcp->ack_frequency = p_conn->ack_frequency;
422 p_tcp->connect_mode = p_conn->connect_mode;
425 &((struct iscsi_spe_conn_offload_option2 *)p_ramrod)->tcp;
427 p = (u16 *)p_conn->local_mac;
428 p_tcp2->local_mac_addr_hi = swab16(get_unaligned(p));
429 p_tcp2->local_mac_addr_mid = swab16(get_unaligned(p + 1));
430 p_tcp2->local_mac_addr_lo = swab16(get_unaligned(p + 2));
432 p = (u16 *)p_conn->remote_mac;
433 p_tcp2->remote_mac_addr_hi = swab16(get_unaligned(p));
434 p_tcp2->remote_mac_addr_mid = swab16(get_unaligned(p + 1));
435 p_tcp2->remote_mac_addr_lo = swab16(get_unaligned(p + 2));
437 p_tcp2->vlan_id = cpu_to_le16(p_conn->vlan_id);
438 p_tcp2->flags = cpu_to_le16(p_conn->tcp_flags);
440 p_tcp2->ip_version = p_conn->ip_version;
441 for (i = 0; i < 4; i++) {
442 dval = p_conn->remote_ip[i];
443 p_tcp2->remote_ip[i] = cpu_to_le32(dval);
444 dval = p_conn->local_ip[i];
445 p_tcp2->local_ip[i] = cpu_to_le32(dval);
448 p_tcp2->flow_label = cpu_to_le32(p_conn->flow_label);
449 p_tcp2->ttl = p_conn->ttl;
450 p_tcp2->tos_or_tc = p_conn->tos_or_tc;
451 p_tcp2->remote_port = cpu_to_le16(p_conn->remote_port);
452 p_tcp2->local_port = cpu_to_le16(p_conn->local_port);
453 p_tcp2->mss = cpu_to_le16(p_conn->mss);
454 p_tcp2->rcv_wnd_scale = p_conn->rcv_wnd_scale;
455 p_tcp2->connect_mode = p_conn->connect_mode;
456 wval = p_conn->syn_ip_payload_length;
457 p_tcp2->syn_ip_payload_length = cpu_to_le16(wval);
458 p_tcp2->syn_phy_addr_lo = DMA_LO_LE(p_conn->syn_phy_addr);
459 p_tcp2->syn_phy_addr_hi = DMA_HI_LE(p_conn->syn_phy_addr);
460 p_tcp2->cwnd = cpu_to_le32(p_conn->cwnd);
461 p_tcp2->ka_max_probe_cnt = p_conn->ka_probe_cnt;
462 p_tcp2->ka_timeout = cpu_to_le32(p_conn->ka_timeout);
463 p_tcp2->max_rt_time = cpu_to_le32(p_conn->max_rt_time);
464 p_tcp2->ka_interval = cpu_to_le32(p_conn->ka_interval);
467 return qed_spq_post(p_hwfn, p_ent, NULL);
470 static int qed_sp_iscsi_conn_update(struct qed_hwfn *p_hwfn,
471 struct qed_iscsi_conn *p_conn,
472 enum spq_mode comp_mode,
473 struct qed_spq_comp_cb *p_comp_addr)
475 struct iscsi_conn_update_ramrod_params *p_ramrod = NULL;
476 struct qed_spq_entry *p_ent = NULL;
477 struct qed_sp_init_data init_data;
482 memset(&init_data, 0, sizeof(init_data));
483 init_data.cid = p_conn->icid;
484 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
485 init_data.comp_mode = comp_mode;
486 init_data.p_comp_data = p_comp_addr;
488 rc = qed_sp_init_request(p_hwfn, &p_ent,
489 ISCSI_RAMROD_CMD_ID_UPDATE_CONN,
490 PROTOCOLID_ISCSI, &init_data);
494 p_ramrod = &p_ent->ramrod.iscsi_conn_update;
495 p_ramrod->hdr.op_code = ISCSI_RAMROD_CMD_ID_UPDATE_CONN;
496 SET_FIELD(p_ramrod->hdr.flags,
497 ISCSI_SLOW_PATH_HDR_LAYER_CODE, p_conn->layer_code);
499 p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id);
500 p_ramrod->fw_cid = cpu_to_le32(p_conn->icid);
501 p_ramrod->flags = p_conn->update_flag;
502 p_ramrod->max_seq_size = cpu_to_le32(p_conn->max_seq_size);
503 dval = p_conn->max_recv_pdu_length;
504 p_ramrod->max_recv_pdu_length = cpu_to_le32(dval);
505 dval = p_conn->max_send_pdu_length;
506 p_ramrod->max_send_pdu_length = cpu_to_le32(dval);
507 dval = p_conn->first_seq_length;
508 p_ramrod->first_seq_length = cpu_to_le32(dval);
509 p_ramrod->exp_stat_sn = cpu_to_le32(p_conn->exp_stat_sn);
511 return qed_spq_post(p_hwfn, p_ent, NULL);
515 qed_sp_iscsi_mac_update(struct qed_hwfn *p_hwfn,
516 struct qed_iscsi_conn *p_conn,
517 enum spq_mode comp_mode,
518 struct qed_spq_comp_cb *p_comp_addr)
520 struct iscsi_spe_conn_mac_update *p_ramrod = NULL;
521 struct qed_spq_entry *p_ent = NULL;
522 struct qed_sp_init_data init_data;
527 memset(&init_data, 0, sizeof(init_data));
528 init_data.cid = p_conn->icid;
529 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
530 init_data.comp_mode = comp_mode;
531 init_data.p_comp_data = p_comp_addr;
533 rc = qed_sp_init_request(p_hwfn, &p_ent,
534 ISCSI_RAMROD_CMD_ID_MAC_UPDATE,
535 PROTOCOLID_ISCSI, &init_data);
539 p_ramrod = &p_ent->ramrod.iscsi_conn_mac_update;
540 p_ramrod->hdr.op_code = ISCSI_RAMROD_CMD_ID_MAC_UPDATE;
541 SET_FIELD(p_ramrod->hdr.flags,
542 ISCSI_SLOW_PATH_HDR_LAYER_CODE, p_conn->layer_code);
544 p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id);
545 p_ramrod->fw_cid = cpu_to_le32(p_conn->icid);
546 ucval = p_conn->remote_mac[1];
547 ((u8 *)(&p_ramrod->remote_mac_addr_hi))[0] = ucval;
548 ucval = p_conn->remote_mac[0];
549 ((u8 *)(&p_ramrod->remote_mac_addr_hi))[1] = ucval;
550 ucval = p_conn->remote_mac[3];
551 ((u8 *)(&p_ramrod->remote_mac_addr_mid))[0] = ucval;
552 ucval = p_conn->remote_mac[2];
553 ((u8 *)(&p_ramrod->remote_mac_addr_mid))[1] = ucval;
554 ucval = p_conn->remote_mac[5];
555 ((u8 *)(&p_ramrod->remote_mac_addr_lo))[0] = ucval;
556 ucval = p_conn->remote_mac[4];
557 ((u8 *)(&p_ramrod->remote_mac_addr_lo))[1] = ucval;
559 return qed_spq_post(p_hwfn, p_ent, NULL);
562 static int qed_sp_iscsi_conn_terminate(struct qed_hwfn *p_hwfn,
563 struct qed_iscsi_conn *p_conn,
564 enum spq_mode comp_mode,
565 struct qed_spq_comp_cb *p_comp_addr)
567 struct iscsi_spe_conn_termination *p_ramrod = NULL;
568 struct qed_spq_entry *p_ent = NULL;
569 struct qed_sp_init_data init_data;
573 memset(&init_data, 0, sizeof(init_data));
574 init_data.cid = p_conn->icid;
575 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
576 init_data.comp_mode = comp_mode;
577 init_data.p_comp_data = p_comp_addr;
579 rc = qed_sp_init_request(p_hwfn, &p_ent,
580 ISCSI_RAMROD_CMD_ID_TERMINATION_CONN,
581 PROTOCOLID_ISCSI, &init_data);
585 p_ramrod = &p_ent->ramrod.iscsi_conn_terminate;
586 p_ramrod->hdr.op_code = ISCSI_RAMROD_CMD_ID_TERMINATION_CONN;
587 SET_FIELD(p_ramrod->hdr.flags,
588 ISCSI_SLOW_PATH_HDR_LAYER_CODE, p_conn->layer_code);
590 p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id);
591 p_ramrod->fw_cid = cpu_to_le32(p_conn->icid);
592 p_ramrod->abortive = p_conn->abortive_dsconnect;
594 DMA_REGPAIR_LE(p_ramrod->query_params_addr,
595 p_conn->tcp_upload_params_phys_addr);
596 DMA_REGPAIR_LE(p_ramrod->queue_cnts_addr, p_conn->queue_cnts_phys_addr);
598 return qed_spq_post(p_hwfn, p_ent, NULL);
601 static int qed_sp_iscsi_conn_clear_sq(struct qed_hwfn *p_hwfn,
602 struct qed_iscsi_conn *p_conn,
603 enum spq_mode comp_mode,
604 struct qed_spq_comp_cb *p_comp_addr)
606 struct iscsi_slow_path_hdr *p_ramrod = NULL;
607 struct qed_spq_entry *p_ent = NULL;
608 struct qed_sp_init_data init_data;
612 memset(&init_data, 0, sizeof(init_data));
613 init_data.cid = p_conn->icid;
614 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
615 init_data.comp_mode = comp_mode;
616 init_data.p_comp_data = p_comp_addr;
618 rc = qed_sp_init_request(p_hwfn, &p_ent,
619 ISCSI_RAMROD_CMD_ID_CLEAR_SQ,
620 PROTOCOLID_ISCSI, &init_data);
624 p_ramrod = &p_ent->ramrod.iscsi_empty;
625 p_ramrod->op_code = ISCSI_RAMROD_CMD_ID_CLEAR_SQ;
626 SET_FIELD(p_ramrod->flags,
627 ISCSI_SLOW_PATH_HDR_LAYER_CODE, p_conn->layer_code);
629 return qed_spq_post(p_hwfn, p_ent, NULL);
632 static int qed_sp_iscsi_func_stop(struct qed_hwfn *p_hwfn,
633 enum spq_mode comp_mode,
634 struct qed_spq_comp_cb *p_comp_addr)
636 struct iscsi_spe_func_dstry *p_ramrod = NULL;
637 struct qed_spq_entry *p_ent = NULL;
638 struct qed_sp_init_data init_data;
642 memset(&init_data, 0, sizeof(init_data));
643 init_data.cid = qed_spq_get_cid(p_hwfn);
644 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
645 init_data.comp_mode = comp_mode;
646 init_data.p_comp_data = p_comp_addr;
648 rc = qed_sp_init_request(p_hwfn, &p_ent,
649 ISCSI_RAMROD_CMD_ID_DESTROY_FUNC,
650 PROTOCOLID_ISCSI, &init_data);
654 p_ramrod = &p_ent->ramrod.iscsi_destroy;
655 p_ramrod->hdr.op_code = ISCSI_RAMROD_CMD_ID_DESTROY_FUNC;
657 rc = qed_spq_post(p_hwfn, p_ent, NULL);
659 qed_spq_unregister_async_cb(p_hwfn, PROTOCOLID_ISCSI);
663 static void __iomem *qed_iscsi_get_db_addr(struct qed_hwfn *p_hwfn, u32 cid)
665 return (u8 __iomem *)p_hwfn->doorbells +
666 qed_db_addr(cid, DQ_DEMS_LEGACY);
669 static void __iomem *qed_iscsi_get_primary_bdq_prod(struct qed_hwfn *p_hwfn,
672 if (RESC_NUM(p_hwfn, QED_BDQ)) {
673 return (u8 __iomem *)p_hwfn->regview +
674 GTT_BAR0_MAP_REG_MSDM_RAM +
675 MSTORM_SCSI_BDQ_EXT_PROD_OFFSET(RESC_START(p_hwfn,
679 DP_NOTICE(p_hwfn, "BDQ is not allocated!\n");
684 static void __iomem *qed_iscsi_get_secondary_bdq_prod(struct qed_hwfn *p_hwfn,
687 if (RESC_NUM(p_hwfn, QED_BDQ)) {
688 return (u8 __iomem *)p_hwfn->regview +
689 GTT_BAR0_MAP_REG_TSDM_RAM +
690 TSTORM_SCSI_BDQ_EXT_PROD_OFFSET(RESC_START(p_hwfn,
694 DP_NOTICE(p_hwfn, "BDQ is not allocated!\n");
699 static int qed_iscsi_setup_connection(struct qed_iscsi_conn *p_conn)
701 if (!p_conn->queue_cnts_virt_addr)
703 memset(p_conn->queue_cnts_virt_addr, 0,
704 sizeof(*p_conn->queue_cnts_virt_addr));
706 if (!p_conn->tcp_upload_params_virt_addr)
708 memset(p_conn->tcp_upload_params_virt_addr, 0,
709 sizeof(*p_conn->tcp_upload_params_virt_addr));
711 if (!p_conn->r2tq.p_virt_addr)
713 qed_chain_pbl_zero_mem(&p_conn->r2tq);
715 if (!p_conn->uhq.p_virt_addr)
717 qed_chain_pbl_zero_mem(&p_conn->uhq);
719 if (!p_conn->xhq.p_virt_addr)
721 qed_chain_pbl_zero_mem(&p_conn->xhq);
728 static int qed_iscsi_allocate_connection(struct qed_hwfn *p_hwfn,
729 struct qed_iscsi_conn **p_out_conn)
731 u16 uhq_num_elements = 0, xhq_num_elements = 0, r2tq_num_elements = 0;
732 struct scsi_terminate_extra_params *p_q_cnts = NULL;
733 struct qed_iscsi_pf_params *p_params = NULL;
734 struct tcp_upload_params *p_tcp = NULL;
735 struct qed_iscsi_conn *p_conn = NULL;
738 /* Try finding a free connection that can be used */
739 spin_lock_bh(&p_hwfn->p_iscsi_info->lock);
740 if (!list_empty(&p_hwfn->p_iscsi_info->free_list))
741 p_conn = list_first_entry(&p_hwfn->p_iscsi_info->free_list,
742 struct qed_iscsi_conn, list_entry);
744 list_del(&p_conn->list_entry);
745 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock);
746 *p_out_conn = p_conn;
749 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock);
751 /* Need to allocate a new connection */
752 p_params = &p_hwfn->pf_params.iscsi_pf_params;
754 p_conn = kzalloc(sizeof(*p_conn), GFP_KERNEL);
758 p_q_cnts = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev,
760 &p_conn->queue_cnts_phys_addr,
763 goto nomem_queue_cnts_param;
764 p_conn->queue_cnts_virt_addr = p_q_cnts;
766 p_tcp = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev,
768 &p_conn->tcp_upload_params_phys_addr,
771 goto nomem_upload_param;
772 p_conn->tcp_upload_params_virt_addr = p_tcp;
774 r2tq_num_elements = p_params->num_r2tq_pages_in_ring *
775 QED_CHAIN_PAGE_SIZE / 0x80;
776 rc = qed_chain_alloc(p_hwfn->cdev,
777 QED_CHAIN_USE_TO_CONSUME_PRODUCE,
779 QED_CHAIN_CNT_TYPE_U16,
780 r2tq_num_elements, 0x80, &p_conn->r2tq, NULL);
784 uhq_num_elements = p_params->num_uhq_pages_in_ring *
785 QED_CHAIN_PAGE_SIZE / sizeof(struct iscsi_uhqe);
786 rc = qed_chain_alloc(p_hwfn->cdev,
787 QED_CHAIN_USE_TO_CONSUME_PRODUCE,
789 QED_CHAIN_CNT_TYPE_U16,
791 sizeof(struct iscsi_uhqe), &p_conn->uhq, NULL);
795 xhq_num_elements = uhq_num_elements;
796 rc = qed_chain_alloc(p_hwfn->cdev,
797 QED_CHAIN_USE_TO_CONSUME_PRODUCE,
799 QED_CHAIN_CNT_TYPE_U16,
801 sizeof(struct iscsi_xhqe), &p_conn->xhq, NULL);
805 p_conn->free_on_delete = true;
806 *p_out_conn = p_conn;
810 qed_chain_free(p_hwfn->cdev, &p_conn->uhq);
812 qed_chain_free(p_hwfn->cdev, &p_conn->r2tq);
814 dma_free_coherent(&p_hwfn->cdev->pdev->dev,
815 sizeof(struct tcp_upload_params),
816 p_conn->tcp_upload_params_virt_addr,
817 p_conn->tcp_upload_params_phys_addr);
819 dma_free_coherent(&p_hwfn->cdev->pdev->dev,
820 sizeof(struct scsi_terminate_extra_params),
821 p_conn->queue_cnts_virt_addr,
822 p_conn->queue_cnts_phys_addr);
823 nomem_queue_cnts_param:
829 static int qed_iscsi_acquire_connection(struct qed_hwfn *p_hwfn,
830 struct qed_iscsi_conn *p_in_conn,
831 struct qed_iscsi_conn **p_out_conn)
833 struct qed_iscsi_conn *p_conn = NULL;
837 spin_lock_bh(&p_hwfn->p_iscsi_info->lock);
838 rc = qed_cxt_acquire_cid(p_hwfn, PROTOCOLID_ISCSI, &icid);
839 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock);
843 /* Use input connection or allocate a new one */
847 rc = qed_iscsi_allocate_connection(p_hwfn, &p_conn);
850 rc = qed_iscsi_setup_connection(p_conn);
853 spin_lock_bh(&p_hwfn->p_iscsi_info->lock);
854 qed_cxt_release_cid(p_hwfn, icid);
855 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock);
860 p_conn->conn_id = (u16)icid;
861 p_conn->fw_cid = (p_hwfn->hw_info.opaque_fid << 16) | icid;
863 *p_out_conn = p_conn;
868 static void qed_iscsi_release_connection(struct qed_hwfn *p_hwfn,
869 struct qed_iscsi_conn *p_conn)
871 spin_lock_bh(&p_hwfn->p_iscsi_info->lock);
872 list_add_tail(&p_conn->list_entry, &p_hwfn->p_iscsi_info->free_list);
873 qed_cxt_release_cid(p_hwfn, p_conn->icid);
874 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock);
877 static void qed_iscsi_free_connection(struct qed_hwfn *p_hwfn,
878 struct qed_iscsi_conn *p_conn)
880 qed_chain_free(p_hwfn->cdev, &p_conn->xhq);
881 qed_chain_free(p_hwfn->cdev, &p_conn->uhq);
882 qed_chain_free(p_hwfn->cdev, &p_conn->r2tq);
883 dma_free_coherent(&p_hwfn->cdev->pdev->dev,
884 sizeof(struct tcp_upload_params),
885 p_conn->tcp_upload_params_virt_addr,
886 p_conn->tcp_upload_params_phys_addr);
887 dma_free_coherent(&p_hwfn->cdev->pdev->dev,
888 sizeof(struct scsi_terminate_extra_params),
889 p_conn->queue_cnts_virt_addr,
890 p_conn->queue_cnts_phys_addr);
894 int qed_iscsi_alloc(struct qed_hwfn *p_hwfn)
896 struct qed_iscsi_info *p_iscsi_info;
898 p_iscsi_info = kzalloc(sizeof(*p_iscsi_info), GFP_KERNEL);
902 INIT_LIST_HEAD(&p_iscsi_info->free_list);
904 p_hwfn->p_iscsi_info = p_iscsi_info;
908 void qed_iscsi_setup(struct qed_hwfn *p_hwfn)
910 spin_lock_init(&p_hwfn->p_iscsi_info->lock);
913 void qed_iscsi_free(struct qed_hwfn *p_hwfn)
915 struct qed_iscsi_conn *p_conn = NULL;
917 if (!p_hwfn->p_iscsi_info)
920 while (!list_empty(&p_hwfn->p_iscsi_info->free_list)) {
921 p_conn = list_first_entry(&p_hwfn->p_iscsi_info->free_list,
922 struct qed_iscsi_conn, list_entry);
924 list_del(&p_conn->list_entry);
925 qed_iscsi_free_connection(p_hwfn, p_conn);
929 kfree(p_hwfn->p_iscsi_info);
930 p_hwfn->p_iscsi_info = NULL;
933 static void _qed_iscsi_get_tstats(struct qed_hwfn *p_hwfn,
934 struct qed_ptt *p_ptt,
935 struct qed_iscsi_stats *p_stats)
937 struct tstorm_iscsi_stats_drv tstats;
940 memset(&tstats, 0, sizeof(tstats));
941 tstats_addr = BAR0_MAP_REG_TSDM_RAM +
942 TSTORM_ISCSI_RX_STATS_OFFSET(p_hwfn->rel_pf_id);
943 qed_memcpy_from(p_hwfn, p_ptt, &tstats, tstats_addr, sizeof(tstats));
945 p_stats->iscsi_rx_bytes_cnt =
946 HILO_64_REGPAIR(tstats.iscsi_rx_bytes_cnt);
947 p_stats->iscsi_rx_packet_cnt =
948 HILO_64_REGPAIR(tstats.iscsi_rx_packet_cnt);
949 p_stats->iscsi_rx_new_ooo_isle_events_cnt =
950 HILO_64_REGPAIR(tstats.iscsi_rx_new_ooo_isle_events_cnt);
951 p_stats->iscsi_cmdq_threshold_cnt =
952 le32_to_cpu(tstats.iscsi_cmdq_threshold_cnt);
953 p_stats->iscsi_rq_threshold_cnt =
954 le32_to_cpu(tstats.iscsi_rq_threshold_cnt);
955 p_stats->iscsi_immq_threshold_cnt =
956 le32_to_cpu(tstats.iscsi_immq_threshold_cnt);
959 static void _qed_iscsi_get_mstats(struct qed_hwfn *p_hwfn,
960 struct qed_ptt *p_ptt,
961 struct qed_iscsi_stats *p_stats)
963 struct mstorm_iscsi_stats_drv mstats;
966 memset(&mstats, 0, sizeof(mstats));
967 mstats_addr = BAR0_MAP_REG_MSDM_RAM +
968 MSTORM_ISCSI_RX_STATS_OFFSET(p_hwfn->rel_pf_id);
969 qed_memcpy_from(p_hwfn, p_ptt, &mstats, mstats_addr, sizeof(mstats));
971 p_stats->iscsi_rx_dropped_pdus_task_not_valid =
972 HILO_64_REGPAIR(mstats.iscsi_rx_dropped_pdus_task_not_valid);
975 static void _qed_iscsi_get_ustats(struct qed_hwfn *p_hwfn,
976 struct qed_ptt *p_ptt,
977 struct qed_iscsi_stats *p_stats)
979 struct ustorm_iscsi_stats_drv ustats;
982 memset(&ustats, 0, sizeof(ustats));
983 ustats_addr = BAR0_MAP_REG_USDM_RAM +
984 USTORM_ISCSI_RX_STATS_OFFSET(p_hwfn->rel_pf_id);
985 qed_memcpy_from(p_hwfn, p_ptt, &ustats, ustats_addr, sizeof(ustats));
987 p_stats->iscsi_rx_data_pdu_cnt =
988 HILO_64_REGPAIR(ustats.iscsi_rx_data_pdu_cnt);
989 p_stats->iscsi_rx_r2t_pdu_cnt =
990 HILO_64_REGPAIR(ustats.iscsi_rx_r2t_pdu_cnt);
991 p_stats->iscsi_rx_total_pdu_cnt =
992 HILO_64_REGPAIR(ustats.iscsi_rx_total_pdu_cnt);
995 static void _qed_iscsi_get_xstats(struct qed_hwfn *p_hwfn,
996 struct qed_ptt *p_ptt,
997 struct qed_iscsi_stats *p_stats)
999 struct xstorm_iscsi_stats_drv xstats;
1002 memset(&xstats, 0, sizeof(xstats));
1003 xstats_addr = BAR0_MAP_REG_XSDM_RAM +
1004 XSTORM_ISCSI_TX_STATS_OFFSET(p_hwfn->rel_pf_id);
1005 qed_memcpy_from(p_hwfn, p_ptt, &xstats, xstats_addr, sizeof(xstats));
1007 p_stats->iscsi_tx_go_to_slow_start_event_cnt =
1008 HILO_64_REGPAIR(xstats.iscsi_tx_go_to_slow_start_event_cnt);
1009 p_stats->iscsi_tx_fast_retransmit_event_cnt =
1010 HILO_64_REGPAIR(xstats.iscsi_tx_fast_retransmit_event_cnt);
1013 static void _qed_iscsi_get_ystats(struct qed_hwfn *p_hwfn,
1014 struct qed_ptt *p_ptt,
1015 struct qed_iscsi_stats *p_stats)
1017 struct ystorm_iscsi_stats_drv ystats;
1020 memset(&ystats, 0, sizeof(ystats));
1021 ystats_addr = BAR0_MAP_REG_YSDM_RAM +
1022 YSTORM_ISCSI_TX_STATS_OFFSET(p_hwfn->rel_pf_id);
1023 qed_memcpy_from(p_hwfn, p_ptt, &ystats, ystats_addr, sizeof(ystats));
1025 p_stats->iscsi_tx_data_pdu_cnt =
1026 HILO_64_REGPAIR(ystats.iscsi_tx_data_pdu_cnt);
1027 p_stats->iscsi_tx_r2t_pdu_cnt =
1028 HILO_64_REGPAIR(ystats.iscsi_tx_r2t_pdu_cnt);
1029 p_stats->iscsi_tx_total_pdu_cnt =
1030 HILO_64_REGPAIR(ystats.iscsi_tx_total_pdu_cnt);
1033 static void _qed_iscsi_get_pstats(struct qed_hwfn *p_hwfn,
1034 struct qed_ptt *p_ptt,
1035 struct qed_iscsi_stats *p_stats)
1037 struct pstorm_iscsi_stats_drv pstats;
1040 memset(&pstats, 0, sizeof(pstats));
1041 pstats_addr = BAR0_MAP_REG_PSDM_RAM +
1042 PSTORM_ISCSI_TX_STATS_OFFSET(p_hwfn->rel_pf_id);
1043 qed_memcpy_from(p_hwfn, p_ptt, &pstats, pstats_addr, sizeof(pstats));
1045 p_stats->iscsi_tx_bytes_cnt =
1046 HILO_64_REGPAIR(pstats.iscsi_tx_bytes_cnt);
1047 p_stats->iscsi_tx_packet_cnt =
1048 HILO_64_REGPAIR(pstats.iscsi_tx_packet_cnt);
1051 static int qed_iscsi_get_stats(struct qed_hwfn *p_hwfn,
1052 struct qed_iscsi_stats *stats)
1054 struct qed_ptt *p_ptt;
1056 memset(stats, 0, sizeof(*stats));
1058 p_ptt = qed_ptt_acquire(p_hwfn);
1060 DP_ERR(p_hwfn, "Failed to acquire ptt\n");
1064 _qed_iscsi_get_tstats(p_hwfn, p_ptt, stats);
1065 _qed_iscsi_get_mstats(p_hwfn, p_ptt, stats);
1066 _qed_iscsi_get_ustats(p_hwfn, p_ptt, stats);
1068 _qed_iscsi_get_xstats(p_hwfn, p_ptt, stats);
1069 _qed_iscsi_get_ystats(p_hwfn, p_ptt, stats);
1070 _qed_iscsi_get_pstats(p_hwfn, p_ptt, stats);
1072 qed_ptt_release(p_hwfn, p_ptt);
1077 struct qed_hash_iscsi_con {
1078 struct hlist_node node;
1079 struct qed_iscsi_conn *con;
1082 static int qed_fill_iscsi_dev_info(struct qed_dev *cdev,
1083 struct qed_dev_iscsi_info *info)
1085 struct qed_hwfn *hwfn = QED_LEADING_HWFN(cdev);
1089 memset(info, 0, sizeof(*info));
1090 rc = qed_fill_dev_info(cdev, &info->common);
1092 info->primary_dbq_rq_addr =
1093 qed_iscsi_get_primary_bdq_prod(hwfn, BDQ_ID_RQ);
1094 info->secondary_bdq_rq_addr =
1095 qed_iscsi_get_secondary_bdq_prod(hwfn, BDQ_ID_RQ);
1097 info->num_cqs = FEAT_NUM(hwfn, QED_ISCSI_CQ);
1102 static void qed_register_iscsi_ops(struct qed_dev *cdev,
1103 struct qed_iscsi_cb_ops *ops, void *cookie)
1105 cdev->protocol_ops.iscsi = ops;
1106 cdev->ops_cookie = cookie;
1109 static struct qed_hash_iscsi_con *qed_iscsi_get_hash(struct qed_dev *cdev,
1112 struct qed_hash_iscsi_con *hash_con = NULL;
1114 if (!(cdev->flags & QED_FLAG_STORAGE_STARTED))
1117 hash_for_each_possible(cdev->connections, hash_con, node, handle) {
1118 if (hash_con->con->icid == handle)
1122 if (!hash_con || (hash_con->con->icid != handle))
1128 static int qed_iscsi_stop(struct qed_dev *cdev)
1132 if (!(cdev->flags & QED_FLAG_STORAGE_STARTED)) {
1133 DP_NOTICE(cdev, "iscsi already stopped\n");
1137 if (!hash_empty(cdev->connections)) {
1139 "Can't stop iscsi - not all connections were returned\n");
1143 /* Stop the iscsi */
1144 rc = qed_sp_iscsi_func_stop(QED_LEADING_HWFN(cdev),
1145 QED_SPQ_MODE_EBLOCK, NULL);
1146 cdev->flags &= ~QED_FLAG_STORAGE_STARTED;
1151 static int qed_iscsi_start(struct qed_dev *cdev,
1152 struct qed_iscsi_tid *tasks,
1153 void *event_context,
1154 iscsi_event_cb_t async_event_cb)
1157 struct qed_tid_mem *tid_info;
1159 if (cdev->flags & QED_FLAG_STORAGE_STARTED) {
1160 DP_NOTICE(cdev, "iscsi already started;\n");
1164 rc = qed_sp_iscsi_func_start(QED_LEADING_HWFN(cdev),
1165 QED_SPQ_MODE_EBLOCK, NULL, event_context,
1168 DP_NOTICE(cdev, "Failed to start iscsi\n");
1172 cdev->flags |= QED_FLAG_STORAGE_STARTED;
1173 hash_init(cdev->connections);
1178 tid_info = kzalloc(sizeof(*tid_info), GFP_KERNEL);
1181 qed_iscsi_stop(cdev);
1185 rc = qed_cxt_get_tid_mem_info(QED_LEADING_HWFN(cdev),
1188 DP_NOTICE(cdev, "Failed to gather task information\n");
1189 qed_iscsi_stop(cdev);
1194 /* Fill task information */
1195 tasks->size = tid_info->tid_size;
1196 tasks->num_tids_per_block = tid_info->num_tids_per_block;
1197 memcpy(tasks->blocks, tid_info->blocks,
1198 MAX_TID_BLOCKS_ISCSI * sizeof(u8 *));
1205 static int qed_iscsi_acquire_conn(struct qed_dev *cdev,
1207 u32 *fw_cid, void __iomem **p_doorbell)
1209 struct qed_hash_iscsi_con *hash_con;
1212 /* Allocate a hashed connection */
1213 hash_con = kzalloc(sizeof(*hash_con), GFP_ATOMIC);
1217 /* Acquire the connection */
1218 rc = qed_iscsi_acquire_connection(QED_LEADING_HWFN(cdev), NULL,
1221 DP_NOTICE(cdev, "Failed to acquire Connection\n");
1226 /* Added the connection to hash table */
1227 *handle = hash_con->con->icid;
1228 *fw_cid = hash_con->con->fw_cid;
1229 hash_add(cdev->connections, &hash_con->node, *handle);
1232 *p_doorbell = qed_iscsi_get_db_addr(QED_LEADING_HWFN(cdev),
1238 static int qed_iscsi_release_conn(struct qed_dev *cdev, u32 handle)
1240 struct qed_hash_iscsi_con *hash_con;
1242 hash_con = qed_iscsi_get_hash(cdev, handle);
1244 DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
1249 hlist_del(&hash_con->node);
1250 qed_iscsi_release_connection(QED_LEADING_HWFN(cdev), hash_con->con);
1256 static int qed_iscsi_offload_conn(struct qed_dev *cdev,
1258 struct qed_iscsi_params_offload *conn_info)
1260 struct qed_hash_iscsi_con *hash_con;
1261 struct qed_iscsi_conn *con;
1263 hash_con = qed_iscsi_get_hash(cdev, handle);
1265 DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
1270 /* Update the connection with information from the params */
1271 con = hash_con->con;
1273 ether_addr_copy(con->local_mac, conn_info->src.mac);
1274 ether_addr_copy(con->remote_mac, conn_info->dst.mac);
1275 memcpy(con->local_ip, conn_info->src.ip, sizeof(con->local_ip));
1276 memcpy(con->remote_ip, conn_info->dst.ip, sizeof(con->remote_ip));
1277 con->local_port = conn_info->src.port;
1278 con->remote_port = conn_info->dst.port;
1280 con->layer_code = conn_info->layer_code;
1281 con->sq_pbl_addr = conn_info->sq_pbl_addr;
1282 con->initial_ack = conn_info->initial_ack;
1283 con->vlan_id = conn_info->vlan_id;
1284 con->tcp_flags = conn_info->tcp_flags;
1285 con->ip_version = conn_info->ip_version;
1286 con->default_cq = conn_info->default_cq;
1287 con->ka_max_probe_cnt = conn_info->ka_max_probe_cnt;
1288 con->dup_ack_theshold = conn_info->dup_ack_theshold;
1289 con->rcv_next = conn_info->rcv_next;
1290 con->snd_una = conn_info->snd_una;
1291 con->snd_next = conn_info->snd_next;
1292 con->snd_max = conn_info->snd_max;
1293 con->snd_wnd = conn_info->snd_wnd;
1294 con->rcv_wnd = conn_info->rcv_wnd;
1295 con->snd_wl1 = conn_info->snd_wl1;
1296 con->cwnd = conn_info->cwnd;
1297 con->ss_thresh = conn_info->ss_thresh;
1298 con->srtt = conn_info->srtt;
1299 con->rtt_var = conn_info->rtt_var;
1300 con->ts_recent = conn_info->ts_recent;
1301 con->ts_recent_age = conn_info->ts_recent_age;
1302 con->total_rt = conn_info->total_rt;
1303 con->ka_timeout_delta = conn_info->ka_timeout_delta;
1304 con->rt_timeout_delta = conn_info->rt_timeout_delta;
1305 con->dup_ack_cnt = conn_info->dup_ack_cnt;
1306 con->snd_wnd_probe_cnt = conn_info->snd_wnd_probe_cnt;
1307 con->ka_probe_cnt = conn_info->ka_probe_cnt;
1308 con->rt_cnt = conn_info->rt_cnt;
1309 con->flow_label = conn_info->flow_label;
1310 con->ka_timeout = conn_info->ka_timeout;
1311 con->ka_interval = conn_info->ka_interval;
1312 con->max_rt_time = conn_info->max_rt_time;
1313 con->initial_rcv_wnd = conn_info->initial_rcv_wnd;
1314 con->ttl = conn_info->ttl;
1315 con->tos_or_tc = conn_info->tos_or_tc;
1316 con->remote_port = conn_info->remote_port;
1317 con->local_port = conn_info->local_port;
1318 con->mss = conn_info->mss;
1319 con->snd_wnd_scale = conn_info->snd_wnd_scale;
1320 con->rcv_wnd_scale = conn_info->rcv_wnd_scale;
1321 con->da_timeout_value = conn_info->da_timeout_value;
1322 con->ack_frequency = conn_info->ack_frequency;
1324 /* Set default values on other connection fields */
1325 con->offl_flags = 0x1;
1327 return qed_sp_iscsi_conn_offload(QED_LEADING_HWFN(cdev), con,
1328 QED_SPQ_MODE_EBLOCK, NULL);
1331 static int qed_iscsi_update_conn(struct qed_dev *cdev,
1333 struct qed_iscsi_params_update *conn_info)
1335 struct qed_hash_iscsi_con *hash_con;
1336 struct qed_iscsi_conn *con;
1338 hash_con = qed_iscsi_get_hash(cdev, handle);
1340 DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
1345 /* Update the connection with information from the params */
1346 con = hash_con->con;
1347 con->update_flag = conn_info->update_flag;
1348 con->max_seq_size = conn_info->max_seq_size;
1349 con->max_recv_pdu_length = conn_info->max_recv_pdu_length;
1350 con->max_send_pdu_length = conn_info->max_send_pdu_length;
1351 con->first_seq_length = conn_info->first_seq_length;
1352 con->exp_stat_sn = conn_info->exp_stat_sn;
1354 return qed_sp_iscsi_conn_update(QED_LEADING_HWFN(cdev), con,
1355 QED_SPQ_MODE_EBLOCK, NULL);
1358 static int qed_iscsi_clear_conn_sq(struct qed_dev *cdev, u32 handle)
1360 struct qed_hash_iscsi_con *hash_con;
1362 hash_con = qed_iscsi_get_hash(cdev, handle);
1364 DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
1369 return qed_sp_iscsi_conn_clear_sq(QED_LEADING_HWFN(cdev),
1371 QED_SPQ_MODE_EBLOCK, NULL);
1374 static int qed_iscsi_destroy_conn(struct qed_dev *cdev,
1375 u32 handle, u8 abrt_conn)
1377 struct qed_hash_iscsi_con *hash_con;
1379 hash_con = qed_iscsi_get_hash(cdev, handle);
1381 DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
1386 hash_con->con->abortive_dsconnect = abrt_conn;
1388 return qed_sp_iscsi_conn_terminate(QED_LEADING_HWFN(cdev),
1390 QED_SPQ_MODE_EBLOCK, NULL);
1393 static int qed_iscsi_stats(struct qed_dev *cdev, struct qed_iscsi_stats *stats)
1395 return qed_iscsi_get_stats(QED_LEADING_HWFN(cdev), stats);
1398 static int qed_iscsi_change_mac(struct qed_dev *cdev,
1399 u32 handle, const u8 *mac)
1401 struct qed_hash_iscsi_con *hash_con;
1403 hash_con = qed_iscsi_get_hash(cdev, handle);
1405 DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
1410 return qed_sp_iscsi_mac_update(QED_LEADING_HWFN(cdev),
1412 QED_SPQ_MODE_EBLOCK, NULL);
1415 void qed_get_protocol_stats_iscsi(struct qed_dev *cdev,
1416 struct qed_mcp_iscsi_stats *stats)
1418 struct qed_iscsi_stats proto_stats;
1420 /* Retrieve FW statistics */
1421 memset(&proto_stats, 0, sizeof(proto_stats));
1422 if (qed_iscsi_stats(cdev, &proto_stats)) {
1423 DP_VERBOSE(cdev, QED_MSG_STORAGE,
1424 "Failed to collect ISCSI statistics\n");
1428 /* Translate FW statistics into struct */
1429 stats->rx_pdus = proto_stats.iscsi_rx_total_pdu_cnt;
1430 stats->tx_pdus = proto_stats.iscsi_tx_total_pdu_cnt;
1431 stats->rx_bytes = proto_stats.iscsi_rx_bytes_cnt;
1432 stats->tx_bytes = proto_stats.iscsi_tx_bytes_cnt;
1435 static const struct qed_iscsi_ops qed_iscsi_ops_pass = {
1436 .common = &qed_common_ops_pass,
1437 .ll2 = &qed_ll2_ops_pass,
1438 .fill_dev_info = &qed_fill_iscsi_dev_info,
1439 .register_ops = &qed_register_iscsi_ops,
1440 .start = &qed_iscsi_start,
1441 .stop = &qed_iscsi_stop,
1442 .acquire_conn = &qed_iscsi_acquire_conn,
1443 .release_conn = &qed_iscsi_release_conn,
1444 .offload_conn = &qed_iscsi_offload_conn,
1445 .update_conn = &qed_iscsi_update_conn,
1446 .destroy_conn = &qed_iscsi_destroy_conn,
1447 .clear_sq = &qed_iscsi_clear_conn_sq,
1448 .get_stats = &qed_iscsi_stats,
1449 .change_mac = &qed_iscsi_change_mac,
1452 const struct qed_iscsi_ops *qed_get_iscsi_ops(void)
1454 return &qed_iscsi_ops_pass;
1456 EXPORT_SYMBOL(qed_get_iscsi_ops);
1458 void qed_put_iscsi_ops(void)
1461 EXPORT_SYMBOL(qed_put_iscsi_ops);