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[mirror_ubuntu-bionic-kernel.git] / drivers / net / ethernet / qlogic / qed / qed_iscsi.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/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/version.h>
48 #include <linux/workqueue.h>
49 #include <linux/errno.h>
50 #include <linux/list.h>
51 #include <linux/spinlock.h>
52 #include <linux/qed/qed_iscsi_if.h>
53 #include "qed.h"
54 #include "qed_cxt.h"
55 #include "qed_dev_api.h"
56 #include "qed_hsi.h"
57 #include "qed_hw.h"
58 #include "qed_int.h"
59 #include "qed_iscsi.h"
60 #include "qed_ll2.h"
61 #include "qed_mcp.h"
62 #include "qed_sp.h"
63 #include "qed_sriov.h"
64 #include "qed_reg_addr.h"
65
66 struct qed_iscsi_conn {
67 struct list_head list_entry;
68 bool free_on_delete;
69
70 u16 conn_id;
71 u32 icid;
72 u32 fw_cid;
73
74 u8 layer_code;
75 u8 offl_flags;
76 u8 connect_mode;
77 u32 initial_ack;
78 dma_addr_t sq_pbl_addr;
79 struct qed_chain r2tq;
80 struct qed_chain xhq;
81 struct qed_chain uhq;
82
83 struct tcp_upload_params *tcp_upload_params_virt_addr;
84 dma_addr_t tcp_upload_params_phys_addr;
85 struct scsi_terminate_extra_params *queue_cnts_virt_addr;
86 dma_addr_t queue_cnts_phys_addr;
87 dma_addr_t syn_phy_addr;
88
89 u16 syn_ip_payload_length;
90 u8 local_mac[6];
91 u8 remote_mac[6];
92 u16 vlan_id;
93 u8 tcp_flags;
94 u8 ip_version;
95 u32 remote_ip[4];
96 u32 local_ip[4];
97 u8 ka_max_probe_cnt;
98 u8 dup_ack_theshold;
99 u32 rcv_next;
100 u32 snd_una;
101 u32 snd_next;
102 u32 snd_max;
103 u32 snd_wnd;
104 u32 rcv_wnd;
105 u32 snd_wl1;
106 u32 cwnd;
107 u32 ss_thresh;
108 u16 srtt;
109 u16 rtt_var;
110 u32 ts_time;
111 u32 ts_recent;
112 u32 ts_recent_age;
113 u32 total_rt;
114 u32 ka_timeout_delta;
115 u32 rt_timeout_delta;
116 u8 dup_ack_cnt;
117 u8 snd_wnd_probe_cnt;
118 u8 ka_probe_cnt;
119 u8 rt_cnt;
120 u32 flow_label;
121 u32 ka_timeout;
122 u32 ka_interval;
123 u32 max_rt_time;
124 u32 initial_rcv_wnd;
125 u8 ttl;
126 u8 tos_or_tc;
127 u16 remote_port;
128 u16 local_port;
129 u16 mss;
130 u8 snd_wnd_scale;
131 u8 rcv_wnd_scale;
132 u32 ts_ticks_per_second;
133 u16 da_timeout_value;
134 u8 ack_frequency;
135
136 u8 update_flag;
137 u8 default_cq;
138 u32 max_seq_size;
139 u32 max_recv_pdu_length;
140 u32 max_send_pdu_length;
141 u32 first_seq_length;
142 u32 exp_stat_sn;
143 u32 stat_sn;
144 u16 physical_q0;
145 u16 physical_q1;
146 u8 abortive_dsconnect;
147 };
148
149 static int
150 qed_sp_iscsi_func_start(struct qed_hwfn *p_hwfn,
151 enum spq_mode comp_mode,
152 struct qed_spq_comp_cb *p_comp_addr,
153 void *event_context, iscsi_event_cb_t async_event_cb)
154 {
155 struct iscsi_init_ramrod_params *p_ramrod = NULL;
156 struct scsi_init_func_queues *p_queue = NULL;
157 struct qed_iscsi_pf_params *p_params = NULL;
158 struct iscsi_spe_func_init *p_init = NULL;
159 struct qed_spq_entry *p_ent = NULL;
160 struct qed_sp_init_data init_data;
161 int rc = 0;
162 u32 dval;
163 u16 val;
164 u8 i;
165
166 /* Get SPQ entry */
167 memset(&init_data, 0, sizeof(init_data));
168 init_data.cid = qed_spq_get_cid(p_hwfn);
169 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
170 init_data.comp_mode = comp_mode;
171 init_data.p_comp_data = p_comp_addr;
172
173 rc = qed_sp_init_request(p_hwfn, &p_ent,
174 ISCSI_RAMROD_CMD_ID_INIT_FUNC,
175 PROTOCOLID_ISCSI, &init_data);
176 if (rc)
177 return rc;
178
179 p_ramrod = &p_ent->ramrod.iscsi_init;
180 p_init = &p_ramrod->iscsi_init_spe;
181 p_params = &p_hwfn->pf_params.iscsi_pf_params;
182 p_queue = &p_init->q_params;
183
184 SET_FIELD(p_init->hdr.flags,
185 ISCSI_SLOW_PATH_HDR_LAYER_CODE, ISCSI_SLOW_PATH_LAYER_CODE);
186 p_init->hdr.op_code = ISCSI_RAMROD_CMD_ID_INIT_FUNC;
187
188 val = p_params->half_way_close_timeout;
189 p_init->half_way_close_timeout = cpu_to_le16(val);
190 p_init->num_sq_pages_in_ring = p_params->num_sq_pages_in_ring;
191 p_init->num_r2tq_pages_in_ring = p_params->num_r2tq_pages_in_ring;
192 p_init->num_uhq_pages_in_ring = p_params->num_uhq_pages_in_ring;
193 p_init->ooo_enable = p_params->ooo_enable;
194 p_init->ll2_rx_queue_id = p_hwfn->hw_info.resc_start[QED_LL2_QUEUE] +
195 p_params->ll2_ooo_queue_id;
196 p_init->func_params.log_page_size = p_params->log_page_size;
197 val = p_params->num_tasks;
198 p_init->func_params.num_tasks = cpu_to_le16(val);
199 p_init->debug_mode.flags = p_params->debug_mode;
200
201 DMA_REGPAIR_LE(p_queue->glbl_q_params_addr,
202 p_params->glbl_q_params_addr);
203
204 val = p_params->cq_num_entries;
205 p_queue->cq_num_entries = cpu_to_le16(val);
206 val = p_params->cmdq_num_entries;
207 p_queue->cmdq_num_entries = cpu_to_le16(val);
208 p_queue->num_queues = p_params->num_queues;
209 dval = (u8)p_hwfn->hw_info.resc_start[QED_CMDQS_CQS];
210 p_queue->queue_relative_offset = (u8)dval;
211 p_queue->cq_sb_pi = p_params->gl_rq_pi;
212 p_queue->cmdq_sb_pi = p_params->gl_cmd_pi;
213
214 for (i = 0; i < p_params->num_queues; i++) {
215 val = p_hwfn->sbs_info[i]->igu_sb_id;
216 p_queue->cq_cmdq_sb_num_arr[i] = cpu_to_le16(val);
217 }
218
219 p_queue->bdq_resource_id = ISCSI_BDQ_ID(p_hwfn->port_id);
220
221 DMA_REGPAIR_LE(p_queue->bdq_pbl_base_address[BDQ_ID_RQ],
222 p_params->bdq_pbl_base_addr[BDQ_ID_RQ]);
223 p_queue->bdq_pbl_num_entries[BDQ_ID_RQ] =
224 p_params->bdq_pbl_num_entries[BDQ_ID_RQ];
225 val = p_params->bdq_xoff_threshold[BDQ_ID_RQ];
226 p_queue->bdq_xoff_threshold[BDQ_ID_RQ] = cpu_to_le16(val);
227 val = p_params->bdq_xon_threshold[BDQ_ID_RQ];
228 p_queue->bdq_xon_threshold[BDQ_ID_RQ] = cpu_to_le16(val);
229
230 DMA_REGPAIR_LE(p_queue->bdq_pbl_base_address[BDQ_ID_IMM_DATA],
231 p_params->bdq_pbl_base_addr[BDQ_ID_IMM_DATA]);
232 p_queue->bdq_pbl_num_entries[BDQ_ID_IMM_DATA] =
233 p_params->bdq_pbl_num_entries[BDQ_ID_IMM_DATA];
234 val = p_params->bdq_xoff_threshold[BDQ_ID_IMM_DATA];
235 p_queue->bdq_xoff_threshold[BDQ_ID_IMM_DATA] = cpu_to_le16(val);
236 val = p_params->bdq_xon_threshold[BDQ_ID_IMM_DATA];
237 p_queue->bdq_xon_threshold[BDQ_ID_IMM_DATA] = cpu_to_le16(val);
238 val = p_params->rq_buffer_size;
239 p_queue->rq_buffer_size = cpu_to_le16(val);
240 if (p_params->is_target) {
241 SET_FIELD(p_queue->q_validity,
242 SCSI_INIT_FUNC_QUEUES_RQ_VALID, 1);
243 if (p_queue->bdq_pbl_num_entries[BDQ_ID_IMM_DATA])
244 SET_FIELD(p_queue->q_validity,
245 SCSI_INIT_FUNC_QUEUES_IMM_DATA_VALID, 1);
246 SET_FIELD(p_queue->q_validity,
247 SCSI_INIT_FUNC_QUEUES_CMD_VALID, 1);
248 } else {
249 SET_FIELD(p_queue->q_validity,
250 SCSI_INIT_FUNC_QUEUES_RQ_VALID, 1);
251 }
252 p_ramrod->tcp_init.two_msl_timer = cpu_to_le32(p_params->two_msl_timer);
253 val = p_params->tx_sws_timer;
254 p_ramrod->tcp_init.tx_sws_timer = cpu_to_le16(val);
255 p_ramrod->tcp_init.maxfinrt = p_params->max_fin_rt;
256
257 p_hwfn->p_iscsi_info->event_context = event_context;
258 p_hwfn->p_iscsi_info->event_cb = async_event_cb;
259
260 return qed_spq_post(p_hwfn, p_ent, NULL);
261 }
262
263 static int qed_sp_iscsi_conn_offload(struct qed_hwfn *p_hwfn,
264 struct qed_iscsi_conn *p_conn,
265 enum spq_mode comp_mode,
266 struct qed_spq_comp_cb *p_comp_addr)
267 {
268 struct iscsi_spe_conn_offload *p_ramrod = NULL;
269 struct tcp_offload_params_opt2 *p_tcp2 = NULL;
270 struct tcp_offload_params *p_tcp = NULL;
271 struct qed_spq_entry *p_ent = NULL;
272 struct qed_sp_init_data init_data;
273 union qed_qm_pq_params pq_params;
274 u16 pq0_id = 0, pq1_id = 0;
275 dma_addr_t r2tq_pbl_addr;
276 dma_addr_t xhq_pbl_addr;
277 dma_addr_t uhq_pbl_addr;
278 int rc = 0;
279 u32 dval;
280 u16 wval;
281 u8 i;
282 u16 *p;
283
284 /* Get SPQ entry */
285 memset(&init_data, 0, sizeof(init_data));
286 init_data.cid = p_conn->icid;
287 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
288 init_data.comp_mode = comp_mode;
289 init_data.p_comp_data = p_comp_addr;
290
291 rc = qed_sp_init_request(p_hwfn, &p_ent,
292 ISCSI_RAMROD_CMD_ID_OFFLOAD_CONN,
293 PROTOCOLID_ISCSI, &init_data);
294 if (rc)
295 return rc;
296
297 p_ramrod = &p_ent->ramrod.iscsi_conn_offload;
298
299 /* Transmission PQ is the first of the PF */
300 memset(&pq_params, 0, sizeof(pq_params));
301 pq0_id = qed_get_qm_pq(p_hwfn, PROTOCOLID_ISCSI, &pq_params);
302 p_conn->physical_q0 = cpu_to_le16(pq0_id);
303 p_ramrod->iscsi.physical_q0 = cpu_to_le16(pq0_id);
304
305 /* iSCSI Pure-ACK PQ */
306 pq_params.iscsi.q_idx = 1;
307 pq1_id = qed_get_qm_pq(p_hwfn, PROTOCOLID_ISCSI, &pq_params);
308 p_conn->physical_q1 = cpu_to_le16(pq1_id);
309 p_ramrod->iscsi.physical_q1 = cpu_to_le16(pq1_id);
310
311 p_ramrod->hdr.op_code = ISCSI_RAMROD_CMD_ID_OFFLOAD_CONN;
312 SET_FIELD(p_ramrod->hdr.flags, ISCSI_SLOW_PATH_HDR_LAYER_CODE,
313 p_conn->layer_code);
314
315 p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id);
316 p_ramrod->fw_cid = cpu_to_le32(p_conn->icid);
317
318 DMA_REGPAIR_LE(p_ramrod->iscsi.sq_pbl_addr, p_conn->sq_pbl_addr);
319
320 r2tq_pbl_addr = qed_chain_get_pbl_phys(&p_conn->r2tq);
321 DMA_REGPAIR_LE(p_ramrod->iscsi.r2tq_pbl_addr, r2tq_pbl_addr);
322
323 xhq_pbl_addr = qed_chain_get_pbl_phys(&p_conn->xhq);
324 DMA_REGPAIR_LE(p_ramrod->iscsi.xhq_pbl_addr, xhq_pbl_addr);
325
326 uhq_pbl_addr = qed_chain_get_pbl_phys(&p_conn->uhq);
327 DMA_REGPAIR_LE(p_ramrod->iscsi.uhq_pbl_addr, uhq_pbl_addr);
328
329 p_ramrod->iscsi.initial_ack = cpu_to_le32(p_conn->initial_ack);
330 p_ramrod->iscsi.flags = p_conn->offl_flags;
331 p_ramrod->iscsi.default_cq = p_conn->default_cq;
332 p_ramrod->iscsi.stat_sn = cpu_to_le32(p_conn->stat_sn);
333
334 if (!GET_FIELD(p_ramrod->iscsi.flags,
335 ISCSI_CONN_OFFLOAD_PARAMS_TCP_ON_CHIP_1B)) {
336 p_tcp = &p_ramrod->tcp;
337
338 p = (u16 *)p_conn->local_mac;
339 p_tcp->local_mac_addr_hi = swab16(get_unaligned(p));
340 p_tcp->local_mac_addr_mid = swab16(get_unaligned(p + 1));
341 p_tcp->local_mac_addr_lo = swab16(get_unaligned(p + 2));
342
343 p = (u16 *)p_conn->remote_mac;
344 p_tcp->remote_mac_addr_hi = swab16(get_unaligned(p));
345 p_tcp->remote_mac_addr_mid = swab16(get_unaligned(p + 1));
346 p_tcp->remote_mac_addr_lo = swab16(get_unaligned(p + 2));
347
348 p_tcp->vlan_id = cpu_to_le16(p_conn->vlan_id);
349
350 p_tcp->flags = p_conn->tcp_flags;
351 p_tcp->ip_version = p_conn->ip_version;
352 for (i = 0; i < 4; i++) {
353 dval = p_conn->remote_ip[i];
354 p_tcp->remote_ip[i] = cpu_to_le32(dval);
355 dval = p_conn->local_ip[i];
356 p_tcp->local_ip[i] = cpu_to_le32(dval);
357 }
358 p_tcp->ka_max_probe_cnt = p_conn->ka_max_probe_cnt;
359 p_tcp->dup_ack_theshold = p_conn->dup_ack_theshold;
360
361 p_tcp->rcv_next = cpu_to_le32(p_conn->rcv_next);
362 p_tcp->snd_una = cpu_to_le32(p_conn->snd_una);
363 p_tcp->snd_next = cpu_to_le32(p_conn->snd_next);
364 p_tcp->snd_max = cpu_to_le32(p_conn->snd_max);
365 p_tcp->snd_wnd = cpu_to_le32(p_conn->snd_wnd);
366 p_tcp->rcv_wnd = cpu_to_le32(p_conn->rcv_wnd);
367 p_tcp->snd_wl1 = cpu_to_le32(p_conn->snd_wl1);
368 p_tcp->cwnd = cpu_to_le32(p_conn->cwnd);
369 p_tcp->ss_thresh = cpu_to_le32(p_conn->ss_thresh);
370 p_tcp->srtt = cpu_to_le16(p_conn->srtt);
371 p_tcp->rtt_var = cpu_to_le16(p_conn->rtt_var);
372 p_tcp->ts_time = cpu_to_le32(p_conn->ts_time);
373 p_tcp->ts_recent = cpu_to_le32(p_conn->ts_recent);
374 p_tcp->ts_recent_age = cpu_to_le32(p_conn->ts_recent_age);
375 p_tcp->total_rt = cpu_to_le32(p_conn->total_rt);
376 dval = p_conn->ka_timeout_delta;
377 p_tcp->ka_timeout_delta = cpu_to_le32(dval);
378 dval = p_conn->rt_timeout_delta;
379 p_tcp->rt_timeout_delta = cpu_to_le32(dval);
380 p_tcp->dup_ack_cnt = p_conn->dup_ack_cnt;
381 p_tcp->snd_wnd_probe_cnt = p_conn->snd_wnd_probe_cnt;
382 p_tcp->ka_probe_cnt = p_conn->ka_probe_cnt;
383 p_tcp->rt_cnt = p_conn->rt_cnt;
384 p_tcp->flow_label = cpu_to_le32(p_conn->flow_label);
385 p_tcp->ka_timeout = cpu_to_le32(p_conn->ka_timeout);
386 p_tcp->ka_interval = cpu_to_le32(p_conn->ka_interval);
387 p_tcp->max_rt_time = cpu_to_le32(p_conn->max_rt_time);
388 dval = p_conn->initial_rcv_wnd;
389 p_tcp->initial_rcv_wnd = cpu_to_le32(dval);
390 p_tcp->ttl = p_conn->ttl;
391 p_tcp->tos_or_tc = p_conn->tos_or_tc;
392 p_tcp->remote_port = cpu_to_le16(p_conn->remote_port);
393 p_tcp->local_port = cpu_to_le16(p_conn->local_port);
394 p_tcp->mss = cpu_to_le16(p_conn->mss);
395 p_tcp->snd_wnd_scale = p_conn->snd_wnd_scale;
396 p_tcp->rcv_wnd_scale = p_conn->rcv_wnd_scale;
397 dval = p_conn->ts_ticks_per_second;
398 p_tcp->ts_ticks_per_second = cpu_to_le32(dval);
399 wval = p_conn->da_timeout_value;
400 p_tcp->da_timeout_value = cpu_to_le16(wval);
401 p_tcp->ack_frequency = p_conn->ack_frequency;
402 p_tcp->connect_mode = p_conn->connect_mode;
403 } else {
404 p_tcp2 =
405 &((struct iscsi_spe_conn_offload_option2 *)p_ramrod)->tcp;
406
407 p = (u16 *)p_conn->local_mac;
408 p_tcp2->local_mac_addr_hi = swab16(get_unaligned(p));
409 p_tcp2->local_mac_addr_mid = swab16(get_unaligned(p + 1));
410 p_tcp2->local_mac_addr_lo = swab16(get_unaligned(p + 2));
411
412 p = (u16 *)p_conn->remote_mac;
413 p_tcp2->remote_mac_addr_hi = swab16(get_unaligned(p));
414 p_tcp2->remote_mac_addr_mid = swab16(get_unaligned(p + 1));
415 p_tcp2->remote_mac_addr_lo = swab16(get_unaligned(p + 2));
416
417 p_tcp2->vlan_id = cpu_to_le16(p_conn->vlan_id);
418 p_tcp2->flags = p_conn->tcp_flags;
419
420 p_tcp2->ip_version = p_conn->ip_version;
421 for (i = 0; i < 4; i++) {
422 dval = p_conn->remote_ip[i];
423 p_tcp2->remote_ip[i] = cpu_to_le32(dval);
424 dval = p_conn->local_ip[i];
425 p_tcp2->local_ip[i] = cpu_to_le32(dval);
426 }
427
428 p_tcp2->flow_label = cpu_to_le32(p_conn->flow_label);
429 p_tcp2->ttl = p_conn->ttl;
430 p_tcp2->tos_or_tc = p_conn->tos_or_tc;
431 p_tcp2->remote_port = cpu_to_le16(p_conn->remote_port);
432 p_tcp2->local_port = cpu_to_le16(p_conn->local_port);
433 p_tcp2->mss = cpu_to_le16(p_conn->mss);
434 p_tcp2->rcv_wnd_scale = p_conn->rcv_wnd_scale;
435 p_tcp2->connect_mode = p_conn->connect_mode;
436 wval = p_conn->syn_ip_payload_length;
437 p_tcp2->syn_ip_payload_length = cpu_to_le16(wval);
438 p_tcp2->syn_phy_addr_lo = DMA_LO_LE(p_conn->syn_phy_addr);
439 p_tcp2->syn_phy_addr_hi = DMA_HI_LE(p_conn->syn_phy_addr);
440 }
441
442 return qed_spq_post(p_hwfn, p_ent, NULL);
443 }
444
445 static int qed_sp_iscsi_conn_update(struct qed_hwfn *p_hwfn,
446 struct qed_iscsi_conn *p_conn,
447 enum spq_mode comp_mode,
448 struct qed_spq_comp_cb *p_comp_addr)
449 {
450 struct iscsi_conn_update_ramrod_params *p_ramrod = NULL;
451 struct qed_spq_entry *p_ent = NULL;
452 struct qed_sp_init_data init_data;
453 int rc = -EINVAL;
454 u32 dval;
455
456 /* Get SPQ entry */
457 memset(&init_data, 0, sizeof(init_data));
458 init_data.cid = p_conn->icid;
459 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
460 init_data.comp_mode = comp_mode;
461 init_data.p_comp_data = p_comp_addr;
462
463 rc = qed_sp_init_request(p_hwfn, &p_ent,
464 ISCSI_RAMROD_CMD_ID_UPDATE_CONN,
465 PROTOCOLID_ISCSI, &init_data);
466 if (rc)
467 return rc;
468
469 p_ramrod = &p_ent->ramrod.iscsi_conn_update;
470 p_ramrod->hdr.op_code = ISCSI_RAMROD_CMD_ID_UPDATE_CONN;
471 SET_FIELD(p_ramrod->hdr.flags,
472 ISCSI_SLOW_PATH_HDR_LAYER_CODE, p_conn->layer_code);
473
474 p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id);
475 p_ramrod->fw_cid = cpu_to_le32(p_conn->icid);
476 p_ramrod->flags = p_conn->update_flag;
477 p_ramrod->max_seq_size = cpu_to_le32(p_conn->max_seq_size);
478 dval = p_conn->max_recv_pdu_length;
479 p_ramrod->max_recv_pdu_length = cpu_to_le32(dval);
480 dval = p_conn->max_send_pdu_length;
481 p_ramrod->max_send_pdu_length = cpu_to_le32(dval);
482 dval = p_conn->first_seq_length;
483 p_ramrod->first_seq_length = cpu_to_le32(dval);
484 p_ramrod->exp_stat_sn = cpu_to_le32(p_conn->exp_stat_sn);
485
486 return qed_spq_post(p_hwfn, p_ent, NULL);
487 }
488
489 static int qed_sp_iscsi_conn_terminate(struct qed_hwfn *p_hwfn,
490 struct qed_iscsi_conn *p_conn,
491 enum spq_mode comp_mode,
492 struct qed_spq_comp_cb *p_comp_addr)
493 {
494 struct iscsi_spe_conn_termination *p_ramrod = NULL;
495 struct qed_spq_entry *p_ent = NULL;
496 struct qed_sp_init_data init_data;
497 int rc = -EINVAL;
498
499 /* Get SPQ entry */
500 memset(&init_data, 0, sizeof(init_data));
501 init_data.cid = p_conn->icid;
502 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
503 init_data.comp_mode = comp_mode;
504 init_data.p_comp_data = p_comp_addr;
505
506 rc = qed_sp_init_request(p_hwfn, &p_ent,
507 ISCSI_RAMROD_CMD_ID_TERMINATION_CONN,
508 PROTOCOLID_ISCSI, &init_data);
509 if (rc)
510 return rc;
511
512 p_ramrod = &p_ent->ramrod.iscsi_conn_terminate;
513 p_ramrod->hdr.op_code = ISCSI_RAMROD_CMD_ID_TERMINATION_CONN;
514 SET_FIELD(p_ramrod->hdr.flags,
515 ISCSI_SLOW_PATH_HDR_LAYER_CODE, p_conn->layer_code);
516
517 p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id);
518 p_ramrod->fw_cid = cpu_to_le32(p_conn->icid);
519 p_ramrod->abortive = p_conn->abortive_dsconnect;
520
521 DMA_REGPAIR_LE(p_ramrod->query_params_addr,
522 p_conn->tcp_upload_params_phys_addr);
523 DMA_REGPAIR_LE(p_ramrod->queue_cnts_addr, p_conn->queue_cnts_phys_addr);
524
525 return qed_spq_post(p_hwfn, p_ent, NULL);
526 }
527
528 static int qed_sp_iscsi_conn_clear_sq(struct qed_hwfn *p_hwfn,
529 struct qed_iscsi_conn *p_conn,
530 enum spq_mode comp_mode,
531 struct qed_spq_comp_cb *p_comp_addr)
532 {
533 struct iscsi_slow_path_hdr *p_ramrod = NULL;
534 struct qed_spq_entry *p_ent = NULL;
535 struct qed_sp_init_data init_data;
536 int rc = -EINVAL;
537
538 /* Get SPQ entry */
539 memset(&init_data, 0, sizeof(init_data));
540 init_data.cid = p_conn->icid;
541 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
542 init_data.comp_mode = comp_mode;
543 init_data.p_comp_data = p_comp_addr;
544
545 rc = qed_sp_init_request(p_hwfn, &p_ent,
546 ISCSI_RAMROD_CMD_ID_CLEAR_SQ,
547 PROTOCOLID_ISCSI, &init_data);
548 if (rc)
549 return rc;
550
551 p_ramrod = &p_ent->ramrod.iscsi_empty;
552 p_ramrod->op_code = ISCSI_RAMROD_CMD_ID_CLEAR_SQ;
553 SET_FIELD(p_ramrod->flags,
554 ISCSI_SLOW_PATH_HDR_LAYER_CODE, p_conn->layer_code);
555
556 return qed_spq_post(p_hwfn, p_ent, NULL);
557 }
558
559 static int qed_sp_iscsi_func_stop(struct qed_hwfn *p_hwfn,
560 enum spq_mode comp_mode,
561 struct qed_spq_comp_cb *p_comp_addr)
562 {
563 struct iscsi_spe_func_dstry *p_ramrod = NULL;
564 struct qed_spq_entry *p_ent = NULL;
565 struct qed_sp_init_data init_data;
566 int rc = 0;
567
568 /* Get SPQ entry */
569 memset(&init_data, 0, sizeof(init_data));
570 init_data.cid = qed_spq_get_cid(p_hwfn);
571 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
572 init_data.comp_mode = comp_mode;
573 init_data.p_comp_data = p_comp_addr;
574
575 rc = qed_sp_init_request(p_hwfn, &p_ent,
576 ISCSI_RAMROD_CMD_ID_DESTROY_FUNC,
577 PROTOCOLID_ISCSI, &init_data);
578 if (rc)
579 return rc;
580
581 p_ramrod = &p_ent->ramrod.iscsi_destroy;
582 p_ramrod->hdr.op_code = ISCSI_RAMROD_CMD_ID_DESTROY_FUNC;
583
584 return qed_spq_post(p_hwfn, p_ent, NULL);
585 }
586
587 static void __iomem *qed_iscsi_get_db_addr(struct qed_hwfn *p_hwfn, u32 cid)
588 {
589 return (u8 __iomem *)p_hwfn->doorbells +
590 qed_db_addr(cid, DQ_DEMS_LEGACY);
591 }
592
593 static void __iomem *qed_iscsi_get_primary_bdq_prod(struct qed_hwfn *p_hwfn,
594 u8 bdq_id)
595 {
596 u8 bdq_function_id = ISCSI_BDQ_ID(p_hwfn->port_id);
597
598 return (u8 __iomem *)p_hwfn->regview + GTT_BAR0_MAP_REG_MSDM_RAM +
599 MSTORM_SCSI_BDQ_EXT_PROD_OFFSET(bdq_function_id,
600 bdq_id);
601 }
602
603 static void __iomem *qed_iscsi_get_secondary_bdq_prod(struct qed_hwfn *p_hwfn,
604 u8 bdq_id)
605 {
606 u8 bdq_function_id = ISCSI_BDQ_ID(p_hwfn->port_id);
607
608 return (u8 __iomem *)p_hwfn->regview + GTT_BAR0_MAP_REG_TSDM_RAM +
609 TSTORM_SCSI_BDQ_EXT_PROD_OFFSET(bdq_function_id,
610 bdq_id);
611 }
612
613 static int qed_iscsi_setup_connection(struct qed_hwfn *p_hwfn,
614 struct qed_iscsi_conn *p_conn)
615 {
616 if (!p_conn->queue_cnts_virt_addr)
617 goto nomem;
618 memset(p_conn->queue_cnts_virt_addr, 0,
619 sizeof(*p_conn->queue_cnts_virt_addr));
620
621 if (!p_conn->tcp_upload_params_virt_addr)
622 goto nomem;
623 memset(p_conn->tcp_upload_params_virt_addr, 0,
624 sizeof(*p_conn->tcp_upload_params_virt_addr));
625
626 if (!p_conn->r2tq.p_virt_addr)
627 goto nomem;
628 qed_chain_pbl_zero_mem(&p_conn->r2tq);
629
630 if (!p_conn->uhq.p_virt_addr)
631 goto nomem;
632 qed_chain_pbl_zero_mem(&p_conn->uhq);
633
634 if (!p_conn->xhq.p_virt_addr)
635 goto nomem;
636 qed_chain_pbl_zero_mem(&p_conn->xhq);
637
638 return 0;
639 nomem:
640 return -ENOMEM;
641 }
642
643 static int qed_iscsi_allocate_connection(struct qed_hwfn *p_hwfn,
644 struct qed_iscsi_conn **p_out_conn)
645 {
646 u16 uhq_num_elements = 0, xhq_num_elements = 0, r2tq_num_elements = 0;
647 struct scsi_terminate_extra_params *p_q_cnts = NULL;
648 struct qed_iscsi_pf_params *p_params = NULL;
649 struct tcp_upload_params *p_tcp = NULL;
650 struct qed_iscsi_conn *p_conn = NULL;
651 int rc = 0;
652
653 /* Try finding a free connection that can be used */
654 spin_lock_bh(&p_hwfn->p_iscsi_info->lock);
655 if (!list_empty(&p_hwfn->p_iscsi_info->free_list))
656 p_conn = list_first_entry(&p_hwfn->p_iscsi_info->free_list,
657 struct qed_iscsi_conn, list_entry);
658 if (p_conn) {
659 list_del(&p_conn->list_entry);
660 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock);
661 *p_out_conn = p_conn;
662 return 0;
663 }
664 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock);
665
666 /* Need to allocate a new connection */
667 p_params = &p_hwfn->pf_params.iscsi_pf_params;
668
669 p_conn = kzalloc(sizeof(*p_conn), GFP_KERNEL);
670 if (!p_conn)
671 return -ENOMEM;
672
673 p_q_cnts = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev,
674 sizeof(*p_q_cnts),
675 &p_conn->queue_cnts_phys_addr,
676 GFP_KERNEL);
677 if (!p_q_cnts)
678 goto nomem_queue_cnts_param;
679 p_conn->queue_cnts_virt_addr = p_q_cnts;
680
681 p_tcp = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev,
682 sizeof(*p_tcp),
683 &p_conn->tcp_upload_params_phys_addr,
684 GFP_KERNEL);
685 if (!p_tcp)
686 goto nomem_upload_param;
687 p_conn->tcp_upload_params_virt_addr = p_tcp;
688
689 r2tq_num_elements = p_params->num_r2tq_pages_in_ring *
690 QED_CHAIN_PAGE_SIZE / 0x80;
691 rc = qed_chain_alloc(p_hwfn->cdev,
692 QED_CHAIN_USE_TO_CONSUME_PRODUCE,
693 QED_CHAIN_MODE_PBL,
694 QED_CHAIN_CNT_TYPE_U16,
695 r2tq_num_elements, 0x80, &p_conn->r2tq);
696 if (rc)
697 goto nomem_r2tq;
698
699 uhq_num_elements = p_params->num_uhq_pages_in_ring *
700 QED_CHAIN_PAGE_SIZE / sizeof(struct iscsi_uhqe);
701 rc = qed_chain_alloc(p_hwfn->cdev,
702 QED_CHAIN_USE_TO_CONSUME_PRODUCE,
703 QED_CHAIN_MODE_PBL,
704 QED_CHAIN_CNT_TYPE_U16,
705 uhq_num_elements,
706 sizeof(struct iscsi_uhqe), &p_conn->uhq);
707 if (rc)
708 goto nomem_uhq;
709
710 xhq_num_elements = uhq_num_elements;
711 rc = qed_chain_alloc(p_hwfn->cdev,
712 QED_CHAIN_USE_TO_CONSUME_PRODUCE,
713 QED_CHAIN_MODE_PBL,
714 QED_CHAIN_CNT_TYPE_U16,
715 xhq_num_elements,
716 sizeof(struct iscsi_xhqe), &p_conn->xhq);
717 if (rc)
718 goto nomem;
719
720 p_conn->free_on_delete = true;
721 *p_out_conn = p_conn;
722 return 0;
723
724 nomem:
725 qed_chain_free(p_hwfn->cdev, &p_conn->uhq);
726 nomem_uhq:
727 qed_chain_free(p_hwfn->cdev, &p_conn->r2tq);
728 nomem_r2tq:
729 dma_free_coherent(&p_hwfn->cdev->pdev->dev,
730 sizeof(struct tcp_upload_params),
731 p_conn->tcp_upload_params_virt_addr,
732 p_conn->tcp_upload_params_phys_addr);
733 nomem_upload_param:
734 dma_free_coherent(&p_hwfn->cdev->pdev->dev,
735 sizeof(struct scsi_terminate_extra_params),
736 p_conn->queue_cnts_virt_addr,
737 p_conn->queue_cnts_phys_addr);
738 nomem_queue_cnts_param:
739 kfree(p_conn);
740
741 return -ENOMEM;
742 }
743
744 static int qed_iscsi_acquire_connection(struct qed_hwfn *p_hwfn,
745 struct qed_iscsi_conn *p_in_conn,
746 struct qed_iscsi_conn **p_out_conn)
747 {
748 struct qed_iscsi_conn *p_conn = NULL;
749 int rc = 0;
750 u32 icid;
751
752 spin_lock_bh(&p_hwfn->p_iscsi_info->lock);
753 rc = qed_cxt_acquire_cid(p_hwfn, PROTOCOLID_ISCSI, &icid);
754 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock);
755 if (rc)
756 return rc;
757
758 /* Use input connection or allocate a new one */
759 if (p_in_conn)
760 p_conn = p_in_conn;
761 else
762 rc = qed_iscsi_allocate_connection(p_hwfn, &p_conn);
763
764 if (!rc)
765 rc = qed_iscsi_setup_connection(p_hwfn, p_conn);
766
767 if (rc) {
768 spin_lock_bh(&p_hwfn->p_iscsi_info->lock);
769 qed_cxt_release_cid(p_hwfn, icid);
770 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock);
771 return rc;
772 }
773
774 p_conn->icid = icid;
775 p_conn->conn_id = (u16)icid;
776 p_conn->fw_cid = (p_hwfn->hw_info.opaque_fid << 16) | icid;
777
778 *p_out_conn = p_conn;
779
780 return rc;
781 }
782
783 static void qed_iscsi_release_connection(struct qed_hwfn *p_hwfn,
784 struct qed_iscsi_conn *p_conn)
785 {
786 spin_lock_bh(&p_hwfn->p_iscsi_info->lock);
787 list_add_tail(&p_conn->list_entry, &p_hwfn->p_iscsi_info->free_list);
788 qed_cxt_release_cid(p_hwfn, p_conn->icid);
789 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock);
790 }
791
792 void qed_iscsi_free_connection(struct qed_hwfn *p_hwfn,
793 struct qed_iscsi_conn *p_conn)
794 {
795 qed_chain_free(p_hwfn->cdev, &p_conn->xhq);
796 qed_chain_free(p_hwfn->cdev, &p_conn->uhq);
797 qed_chain_free(p_hwfn->cdev, &p_conn->r2tq);
798 dma_free_coherent(&p_hwfn->cdev->pdev->dev,
799 sizeof(struct tcp_upload_params),
800 p_conn->tcp_upload_params_virt_addr,
801 p_conn->tcp_upload_params_phys_addr);
802 dma_free_coherent(&p_hwfn->cdev->pdev->dev,
803 sizeof(struct scsi_terminate_extra_params),
804 p_conn->queue_cnts_virt_addr,
805 p_conn->queue_cnts_phys_addr);
806 kfree(p_conn);
807 }
808
809 struct qed_iscsi_info *qed_iscsi_alloc(struct qed_hwfn *p_hwfn)
810 {
811 struct qed_iscsi_info *p_iscsi_info;
812
813 p_iscsi_info = kzalloc(sizeof(*p_iscsi_info), GFP_KERNEL);
814 if (!p_iscsi_info)
815 return NULL;
816
817 INIT_LIST_HEAD(&p_iscsi_info->free_list);
818 return p_iscsi_info;
819 }
820
821 void qed_iscsi_setup(struct qed_hwfn *p_hwfn,
822 struct qed_iscsi_info *p_iscsi_info)
823 {
824 spin_lock_init(&p_iscsi_info->lock);
825 }
826
827 void qed_iscsi_free(struct qed_hwfn *p_hwfn,
828 struct qed_iscsi_info *p_iscsi_info)
829 {
830 struct qed_iscsi_conn *p_conn = NULL;
831
832 while (!list_empty(&p_hwfn->p_iscsi_info->free_list)) {
833 p_conn = list_first_entry(&p_hwfn->p_iscsi_info->free_list,
834 struct qed_iscsi_conn, list_entry);
835 if (p_conn) {
836 list_del(&p_conn->list_entry);
837 qed_iscsi_free_connection(p_hwfn, p_conn);
838 }
839 }
840
841 kfree(p_iscsi_info);
842 }
843
844 static void _qed_iscsi_get_tstats(struct qed_hwfn *p_hwfn,
845 struct qed_ptt *p_ptt,
846 struct qed_iscsi_stats *p_stats)
847 {
848 struct tstorm_iscsi_stats_drv tstats;
849 u32 tstats_addr;
850
851 memset(&tstats, 0, sizeof(tstats));
852 tstats_addr = BAR0_MAP_REG_TSDM_RAM +
853 TSTORM_ISCSI_RX_STATS_OFFSET(p_hwfn->rel_pf_id);
854 qed_memcpy_from(p_hwfn, p_ptt, &tstats, tstats_addr, sizeof(tstats));
855
856 p_stats->iscsi_rx_bytes_cnt =
857 HILO_64_REGPAIR(tstats.iscsi_rx_bytes_cnt);
858 p_stats->iscsi_rx_packet_cnt =
859 HILO_64_REGPAIR(tstats.iscsi_rx_packet_cnt);
860 p_stats->iscsi_cmdq_threshold_cnt =
861 le32_to_cpu(tstats.iscsi_cmdq_threshold_cnt);
862 p_stats->iscsi_rq_threshold_cnt =
863 le32_to_cpu(tstats.iscsi_rq_threshold_cnt);
864 p_stats->iscsi_immq_threshold_cnt =
865 le32_to_cpu(tstats.iscsi_immq_threshold_cnt);
866 }
867
868 static void _qed_iscsi_get_mstats(struct qed_hwfn *p_hwfn,
869 struct qed_ptt *p_ptt,
870 struct qed_iscsi_stats *p_stats)
871 {
872 struct mstorm_iscsi_stats_drv mstats;
873 u32 mstats_addr;
874
875 memset(&mstats, 0, sizeof(mstats));
876 mstats_addr = BAR0_MAP_REG_MSDM_RAM +
877 MSTORM_ISCSI_RX_STATS_OFFSET(p_hwfn->rel_pf_id);
878 qed_memcpy_from(p_hwfn, p_ptt, &mstats, mstats_addr, sizeof(mstats));
879
880 p_stats->iscsi_rx_dropped_pdus_task_not_valid =
881 HILO_64_REGPAIR(mstats.iscsi_rx_dropped_pdus_task_not_valid);
882 }
883
884 static void _qed_iscsi_get_ustats(struct qed_hwfn *p_hwfn,
885 struct qed_ptt *p_ptt,
886 struct qed_iscsi_stats *p_stats)
887 {
888 struct ustorm_iscsi_stats_drv ustats;
889 u32 ustats_addr;
890
891 memset(&ustats, 0, sizeof(ustats));
892 ustats_addr = BAR0_MAP_REG_USDM_RAM +
893 USTORM_ISCSI_RX_STATS_OFFSET(p_hwfn->rel_pf_id);
894 qed_memcpy_from(p_hwfn, p_ptt, &ustats, ustats_addr, sizeof(ustats));
895
896 p_stats->iscsi_rx_data_pdu_cnt =
897 HILO_64_REGPAIR(ustats.iscsi_rx_data_pdu_cnt);
898 p_stats->iscsi_rx_r2t_pdu_cnt =
899 HILO_64_REGPAIR(ustats.iscsi_rx_r2t_pdu_cnt);
900 p_stats->iscsi_rx_total_pdu_cnt =
901 HILO_64_REGPAIR(ustats.iscsi_rx_total_pdu_cnt);
902 }
903
904 static void _qed_iscsi_get_xstats(struct qed_hwfn *p_hwfn,
905 struct qed_ptt *p_ptt,
906 struct qed_iscsi_stats *p_stats)
907 {
908 struct xstorm_iscsi_stats_drv xstats;
909 u32 xstats_addr;
910
911 memset(&xstats, 0, sizeof(xstats));
912 xstats_addr = BAR0_MAP_REG_XSDM_RAM +
913 XSTORM_ISCSI_TX_STATS_OFFSET(p_hwfn->rel_pf_id);
914 qed_memcpy_from(p_hwfn, p_ptt, &xstats, xstats_addr, sizeof(xstats));
915
916 p_stats->iscsi_tx_go_to_slow_start_event_cnt =
917 HILO_64_REGPAIR(xstats.iscsi_tx_go_to_slow_start_event_cnt);
918 p_stats->iscsi_tx_fast_retransmit_event_cnt =
919 HILO_64_REGPAIR(xstats.iscsi_tx_fast_retransmit_event_cnt);
920 }
921
922 static void _qed_iscsi_get_ystats(struct qed_hwfn *p_hwfn,
923 struct qed_ptt *p_ptt,
924 struct qed_iscsi_stats *p_stats)
925 {
926 struct ystorm_iscsi_stats_drv ystats;
927 u32 ystats_addr;
928
929 memset(&ystats, 0, sizeof(ystats));
930 ystats_addr = BAR0_MAP_REG_YSDM_RAM +
931 YSTORM_ISCSI_TX_STATS_OFFSET(p_hwfn->rel_pf_id);
932 qed_memcpy_from(p_hwfn, p_ptt, &ystats, ystats_addr, sizeof(ystats));
933
934 p_stats->iscsi_tx_data_pdu_cnt =
935 HILO_64_REGPAIR(ystats.iscsi_tx_data_pdu_cnt);
936 p_stats->iscsi_tx_r2t_pdu_cnt =
937 HILO_64_REGPAIR(ystats.iscsi_tx_r2t_pdu_cnt);
938 p_stats->iscsi_tx_total_pdu_cnt =
939 HILO_64_REGPAIR(ystats.iscsi_tx_total_pdu_cnt);
940 }
941
942 static void _qed_iscsi_get_pstats(struct qed_hwfn *p_hwfn,
943 struct qed_ptt *p_ptt,
944 struct qed_iscsi_stats *p_stats)
945 {
946 struct pstorm_iscsi_stats_drv pstats;
947 u32 pstats_addr;
948
949 memset(&pstats, 0, sizeof(pstats));
950 pstats_addr = BAR0_MAP_REG_PSDM_RAM +
951 PSTORM_ISCSI_TX_STATS_OFFSET(p_hwfn->rel_pf_id);
952 qed_memcpy_from(p_hwfn, p_ptt, &pstats, pstats_addr, sizeof(pstats));
953
954 p_stats->iscsi_tx_bytes_cnt =
955 HILO_64_REGPAIR(pstats.iscsi_tx_bytes_cnt);
956 p_stats->iscsi_tx_packet_cnt =
957 HILO_64_REGPAIR(pstats.iscsi_tx_packet_cnt);
958 }
959
960 static int qed_iscsi_get_stats(struct qed_hwfn *p_hwfn,
961 struct qed_iscsi_stats *stats)
962 {
963 struct qed_ptt *p_ptt;
964
965 memset(stats, 0, sizeof(*stats));
966
967 p_ptt = qed_ptt_acquire(p_hwfn);
968 if (!p_ptt) {
969 DP_ERR(p_hwfn, "Failed to acquire ptt\n");
970 return -EAGAIN;
971 }
972
973 _qed_iscsi_get_tstats(p_hwfn, p_ptt, stats);
974 _qed_iscsi_get_mstats(p_hwfn, p_ptt, stats);
975 _qed_iscsi_get_ustats(p_hwfn, p_ptt, stats);
976
977 _qed_iscsi_get_xstats(p_hwfn, p_ptt, stats);
978 _qed_iscsi_get_ystats(p_hwfn, p_ptt, stats);
979 _qed_iscsi_get_pstats(p_hwfn, p_ptt, stats);
980
981 qed_ptt_release(p_hwfn, p_ptt);
982
983 return 0;
984 }
985
986 struct qed_hash_iscsi_con {
987 struct hlist_node node;
988 struct qed_iscsi_conn *con;
989 };
990
991 static int qed_fill_iscsi_dev_info(struct qed_dev *cdev,
992 struct qed_dev_iscsi_info *info)
993 {
994 struct qed_hwfn *hwfn = QED_LEADING_HWFN(cdev);
995
996 int rc;
997
998 memset(info, 0, sizeof(*info));
999 rc = qed_fill_dev_info(cdev, &info->common);
1000
1001 info->primary_dbq_rq_addr =
1002 qed_iscsi_get_primary_bdq_prod(hwfn, BDQ_ID_RQ);
1003 info->secondary_bdq_rq_addr =
1004 qed_iscsi_get_secondary_bdq_prod(hwfn, BDQ_ID_RQ);
1005
1006 return rc;
1007 }
1008
1009 static void qed_register_iscsi_ops(struct qed_dev *cdev,
1010 struct qed_iscsi_cb_ops *ops, void *cookie)
1011 {
1012 cdev->protocol_ops.iscsi = ops;
1013 cdev->ops_cookie = cookie;
1014 }
1015
1016 static struct qed_hash_iscsi_con *qed_iscsi_get_hash(struct qed_dev *cdev,
1017 u32 handle)
1018 {
1019 struct qed_hash_iscsi_con *hash_con = NULL;
1020
1021 if (!(cdev->flags & QED_FLAG_STORAGE_STARTED))
1022 return NULL;
1023
1024 hash_for_each_possible(cdev->connections, hash_con, node, handle) {
1025 if (hash_con->con->icid == handle)
1026 break;
1027 }
1028
1029 if (!hash_con || (hash_con->con->icid != handle))
1030 return NULL;
1031
1032 return hash_con;
1033 }
1034
1035 static int qed_iscsi_stop(struct qed_dev *cdev)
1036 {
1037 int rc;
1038
1039 if (!(cdev->flags & QED_FLAG_STORAGE_STARTED)) {
1040 DP_NOTICE(cdev, "iscsi already stopped\n");
1041 return 0;
1042 }
1043
1044 if (!hash_empty(cdev->connections)) {
1045 DP_NOTICE(cdev,
1046 "Can't stop iscsi - not all connections were returned\n");
1047 return -EINVAL;
1048 }
1049
1050 /* Stop the iscsi */
1051 rc = qed_sp_iscsi_func_stop(QED_LEADING_HWFN(cdev),
1052 QED_SPQ_MODE_EBLOCK, NULL);
1053 cdev->flags &= ~QED_FLAG_STORAGE_STARTED;
1054
1055 return rc;
1056 }
1057
1058 static int qed_iscsi_start(struct qed_dev *cdev,
1059 struct qed_iscsi_tid *tasks,
1060 void *event_context,
1061 iscsi_event_cb_t async_event_cb)
1062 {
1063 int rc;
1064 struct qed_tid_mem *tid_info;
1065
1066 if (cdev->flags & QED_FLAG_STORAGE_STARTED) {
1067 DP_NOTICE(cdev, "iscsi already started;\n");
1068 return 0;
1069 }
1070
1071 rc = qed_sp_iscsi_func_start(QED_LEADING_HWFN(cdev),
1072 QED_SPQ_MODE_EBLOCK, NULL, event_context,
1073 async_event_cb);
1074 if (rc) {
1075 DP_NOTICE(cdev, "Failed to start iscsi\n");
1076 return rc;
1077 }
1078
1079 cdev->flags |= QED_FLAG_STORAGE_STARTED;
1080 hash_init(cdev->connections);
1081
1082 if (!tasks)
1083 return 0;
1084
1085 tid_info = kzalloc(sizeof(*tid_info), GFP_KERNEL);
1086
1087 if (!tid_info) {
1088 qed_iscsi_stop(cdev);
1089 return -ENOMEM;
1090 }
1091
1092 rc = qed_cxt_get_tid_mem_info(QED_LEADING_HWFN(cdev),
1093 tid_info);
1094 if (rc) {
1095 DP_NOTICE(cdev, "Failed to gather task information\n");
1096 qed_iscsi_stop(cdev);
1097 kfree(tid_info);
1098 return rc;
1099 }
1100
1101 /* Fill task information */
1102 tasks->size = tid_info->tid_size;
1103 tasks->num_tids_per_block = tid_info->num_tids_per_block;
1104 memcpy(tasks->blocks, tid_info->blocks,
1105 MAX_TID_BLOCKS_ISCSI * sizeof(u8 *));
1106
1107 kfree(tid_info);
1108
1109 return 0;
1110 }
1111
1112 static int qed_iscsi_acquire_conn(struct qed_dev *cdev,
1113 u32 *handle,
1114 u32 *fw_cid, void __iomem **p_doorbell)
1115 {
1116 struct qed_hash_iscsi_con *hash_con;
1117 int rc;
1118
1119 /* Allocate a hashed connection */
1120 hash_con = kzalloc(sizeof(*hash_con), GFP_ATOMIC);
1121 if (!hash_con)
1122 return -ENOMEM;
1123
1124 /* Acquire the connection */
1125 rc = qed_iscsi_acquire_connection(QED_LEADING_HWFN(cdev), NULL,
1126 &hash_con->con);
1127 if (rc) {
1128 DP_NOTICE(cdev, "Failed to acquire Connection\n");
1129 kfree(hash_con);
1130 return rc;
1131 }
1132
1133 /* Added the connection to hash table */
1134 *handle = hash_con->con->icid;
1135 *fw_cid = hash_con->con->fw_cid;
1136 hash_add(cdev->connections, &hash_con->node, *handle);
1137
1138 if (p_doorbell)
1139 *p_doorbell = qed_iscsi_get_db_addr(QED_LEADING_HWFN(cdev),
1140 *handle);
1141
1142 return 0;
1143 }
1144
1145 static int qed_iscsi_release_conn(struct qed_dev *cdev, u32 handle)
1146 {
1147 struct qed_hash_iscsi_con *hash_con;
1148
1149 hash_con = qed_iscsi_get_hash(cdev, handle);
1150 if (!hash_con) {
1151 DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
1152 handle);
1153 return -EINVAL;
1154 }
1155
1156 hlist_del(&hash_con->node);
1157 qed_iscsi_release_connection(QED_LEADING_HWFN(cdev), hash_con->con);
1158 kfree(hash_con);
1159
1160 return 0;
1161 }
1162
1163 static int qed_iscsi_offload_conn(struct qed_dev *cdev,
1164 u32 handle,
1165 struct qed_iscsi_params_offload *conn_info)
1166 {
1167 struct qed_hash_iscsi_con *hash_con;
1168 struct qed_iscsi_conn *con;
1169
1170 hash_con = qed_iscsi_get_hash(cdev, handle);
1171 if (!hash_con) {
1172 DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
1173 handle);
1174 return -EINVAL;
1175 }
1176
1177 /* Update the connection with information from the params */
1178 con = hash_con->con;
1179
1180 ether_addr_copy(con->local_mac, conn_info->src.mac);
1181 ether_addr_copy(con->remote_mac, conn_info->dst.mac);
1182 memcpy(con->local_ip, conn_info->src.ip, sizeof(con->local_ip));
1183 memcpy(con->remote_ip, conn_info->dst.ip, sizeof(con->remote_ip));
1184 con->local_port = conn_info->src.port;
1185 con->remote_port = conn_info->dst.port;
1186
1187 con->layer_code = conn_info->layer_code;
1188 con->sq_pbl_addr = conn_info->sq_pbl_addr;
1189 con->initial_ack = conn_info->initial_ack;
1190 con->vlan_id = conn_info->vlan_id;
1191 con->tcp_flags = conn_info->tcp_flags;
1192 con->ip_version = conn_info->ip_version;
1193 con->default_cq = conn_info->default_cq;
1194 con->ka_max_probe_cnt = conn_info->ka_max_probe_cnt;
1195 con->dup_ack_theshold = conn_info->dup_ack_theshold;
1196 con->rcv_next = conn_info->rcv_next;
1197 con->snd_una = conn_info->snd_una;
1198 con->snd_next = conn_info->snd_next;
1199 con->snd_max = conn_info->snd_max;
1200 con->snd_wnd = conn_info->snd_wnd;
1201 con->rcv_wnd = conn_info->rcv_wnd;
1202 con->snd_wl1 = conn_info->snd_wl1;
1203 con->cwnd = conn_info->cwnd;
1204 con->ss_thresh = conn_info->ss_thresh;
1205 con->srtt = conn_info->srtt;
1206 con->rtt_var = conn_info->rtt_var;
1207 con->ts_time = conn_info->ts_time;
1208 con->ts_recent = conn_info->ts_recent;
1209 con->ts_recent_age = conn_info->ts_recent_age;
1210 con->total_rt = conn_info->total_rt;
1211 con->ka_timeout_delta = conn_info->ka_timeout_delta;
1212 con->rt_timeout_delta = conn_info->rt_timeout_delta;
1213 con->dup_ack_cnt = conn_info->dup_ack_cnt;
1214 con->snd_wnd_probe_cnt = conn_info->snd_wnd_probe_cnt;
1215 con->ka_probe_cnt = conn_info->ka_probe_cnt;
1216 con->rt_cnt = conn_info->rt_cnt;
1217 con->flow_label = conn_info->flow_label;
1218 con->ka_timeout = conn_info->ka_timeout;
1219 con->ka_interval = conn_info->ka_interval;
1220 con->max_rt_time = conn_info->max_rt_time;
1221 con->initial_rcv_wnd = conn_info->initial_rcv_wnd;
1222 con->ttl = conn_info->ttl;
1223 con->tos_or_tc = conn_info->tos_or_tc;
1224 con->remote_port = conn_info->remote_port;
1225 con->local_port = conn_info->local_port;
1226 con->mss = conn_info->mss;
1227 con->snd_wnd_scale = conn_info->snd_wnd_scale;
1228 con->rcv_wnd_scale = conn_info->rcv_wnd_scale;
1229 con->ts_ticks_per_second = conn_info->ts_ticks_per_second;
1230 con->da_timeout_value = conn_info->da_timeout_value;
1231 con->ack_frequency = conn_info->ack_frequency;
1232
1233 /* Set default values on other connection fields */
1234 con->offl_flags = 0x1;
1235
1236 return qed_sp_iscsi_conn_offload(QED_LEADING_HWFN(cdev), con,
1237 QED_SPQ_MODE_EBLOCK, NULL);
1238 }
1239
1240 static int qed_iscsi_update_conn(struct qed_dev *cdev,
1241 u32 handle,
1242 struct qed_iscsi_params_update *conn_info)
1243 {
1244 struct qed_hash_iscsi_con *hash_con;
1245 struct qed_iscsi_conn *con;
1246
1247 hash_con = qed_iscsi_get_hash(cdev, handle);
1248 if (!hash_con) {
1249 DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
1250 handle);
1251 return -EINVAL;
1252 }
1253
1254 /* Update the connection with information from the params */
1255 con = hash_con->con;
1256 con->update_flag = conn_info->update_flag;
1257 con->max_seq_size = conn_info->max_seq_size;
1258 con->max_recv_pdu_length = conn_info->max_recv_pdu_length;
1259 con->max_send_pdu_length = conn_info->max_send_pdu_length;
1260 con->first_seq_length = conn_info->first_seq_length;
1261 con->exp_stat_sn = conn_info->exp_stat_sn;
1262
1263 return qed_sp_iscsi_conn_update(QED_LEADING_HWFN(cdev), con,
1264 QED_SPQ_MODE_EBLOCK, NULL);
1265 }
1266
1267 static int qed_iscsi_clear_conn_sq(struct qed_dev *cdev, u32 handle)
1268 {
1269 struct qed_hash_iscsi_con *hash_con;
1270
1271 hash_con = qed_iscsi_get_hash(cdev, handle);
1272 if (!hash_con) {
1273 DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
1274 handle);
1275 return -EINVAL;
1276 }
1277
1278 return qed_sp_iscsi_conn_clear_sq(QED_LEADING_HWFN(cdev),
1279 hash_con->con,
1280 QED_SPQ_MODE_EBLOCK, NULL);
1281 }
1282
1283 static int qed_iscsi_destroy_conn(struct qed_dev *cdev,
1284 u32 handle, u8 abrt_conn)
1285 {
1286 struct qed_hash_iscsi_con *hash_con;
1287
1288 hash_con = qed_iscsi_get_hash(cdev, handle);
1289 if (!hash_con) {
1290 DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
1291 handle);
1292 return -EINVAL;
1293 }
1294
1295 hash_con->con->abortive_dsconnect = abrt_conn;
1296
1297 return qed_sp_iscsi_conn_terminate(QED_LEADING_HWFN(cdev),
1298 hash_con->con,
1299 QED_SPQ_MODE_EBLOCK, NULL);
1300 }
1301
1302 static int qed_iscsi_stats(struct qed_dev *cdev, struct qed_iscsi_stats *stats)
1303 {
1304 return qed_iscsi_get_stats(QED_LEADING_HWFN(cdev), stats);
1305 }
1306
1307 static const struct qed_iscsi_ops qed_iscsi_ops_pass = {
1308 .common = &qed_common_ops_pass,
1309 .ll2 = &qed_ll2_ops_pass,
1310 .fill_dev_info = &qed_fill_iscsi_dev_info,
1311 .register_ops = &qed_register_iscsi_ops,
1312 .start = &qed_iscsi_start,
1313 .stop = &qed_iscsi_stop,
1314 .acquire_conn = &qed_iscsi_acquire_conn,
1315 .release_conn = &qed_iscsi_release_conn,
1316 .offload_conn = &qed_iscsi_offload_conn,
1317 .update_conn = &qed_iscsi_update_conn,
1318 .destroy_conn = &qed_iscsi_destroy_conn,
1319 .clear_sq = &qed_iscsi_clear_conn_sq,
1320 .get_stats = &qed_iscsi_stats,
1321 };
1322
1323 const struct qed_iscsi_ops *qed_get_iscsi_ops(void)
1324 {
1325 return &qed_iscsi_ops_pass;
1326 }
1327 EXPORT_SYMBOL(qed_get_iscsi_ops);
1328
1329 void qed_put_iscsi_ops(void)
1330 {
1331 }
1332 EXPORT_SYMBOL(qed_put_iscsi_ops);
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