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regulator: arizona-ldo1: Factor out generic initialization
[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->func_params.log_page_size = p_params->log_page_size;
194 val = p_params->num_tasks;
195 p_init->func_params.num_tasks = cpu_to_le16(val);
196 p_init->debug_mode.flags = p_params->debug_mode;
197
198 DMA_REGPAIR_LE(p_queue->glbl_q_params_addr,
199 p_params->glbl_q_params_addr);
200
201 val = p_params->cq_num_entries;
202 p_queue->cq_num_entries = cpu_to_le16(val);
203 val = p_params->cmdq_num_entries;
204 p_queue->cmdq_num_entries = cpu_to_le16(val);
205 p_queue->num_queues = p_params->num_queues;
206 dval = (u8)p_hwfn->hw_info.resc_start[QED_CMDQS_CQS];
207 p_queue->queue_relative_offset = (u8)dval;
208 p_queue->cq_sb_pi = p_params->gl_rq_pi;
209 p_queue->cmdq_sb_pi = p_params->gl_cmd_pi;
210
211 for (i = 0; i < p_params->num_queues; i++) {
212 val = p_hwfn->sbs_info[i]->igu_sb_id;
213 p_queue->cq_cmdq_sb_num_arr[i] = cpu_to_le16(val);
214 }
215
216 p_queue->bdq_resource_id = ISCSI_BDQ_ID(p_hwfn->port_id);
217
218 DMA_REGPAIR_LE(p_queue->bdq_pbl_base_address[BDQ_ID_RQ],
219 p_params->bdq_pbl_base_addr[BDQ_ID_RQ]);
220 p_queue->bdq_pbl_num_entries[BDQ_ID_RQ] =
221 p_params->bdq_pbl_num_entries[BDQ_ID_RQ];
222 val = p_params->bdq_xoff_threshold[BDQ_ID_RQ];
223 p_queue->bdq_xoff_threshold[BDQ_ID_RQ] = cpu_to_le16(val);
224 val = p_params->bdq_xon_threshold[BDQ_ID_RQ];
225 p_queue->bdq_xon_threshold[BDQ_ID_RQ] = cpu_to_le16(val);
226
227 DMA_REGPAIR_LE(p_queue->bdq_pbl_base_address[BDQ_ID_IMM_DATA],
228 p_params->bdq_pbl_base_addr[BDQ_ID_IMM_DATA]);
229 p_queue->bdq_pbl_num_entries[BDQ_ID_IMM_DATA] =
230 p_params->bdq_pbl_num_entries[BDQ_ID_IMM_DATA];
231 val = p_params->bdq_xoff_threshold[BDQ_ID_IMM_DATA];
232 p_queue->bdq_xoff_threshold[BDQ_ID_IMM_DATA] = cpu_to_le16(val);
233 val = p_params->bdq_xon_threshold[BDQ_ID_IMM_DATA];
234 p_queue->bdq_xon_threshold[BDQ_ID_IMM_DATA] = cpu_to_le16(val);
235 val = p_params->rq_buffer_size;
236 p_queue->rq_buffer_size = cpu_to_le16(val);
237 if (p_params->is_target) {
238 SET_FIELD(p_queue->q_validity,
239 SCSI_INIT_FUNC_QUEUES_RQ_VALID, 1);
240 if (p_queue->bdq_pbl_num_entries[BDQ_ID_IMM_DATA])
241 SET_FIELD(p_queue->q_validity,
242 SCSI_INIT_FUNC_QUEUES_IMM_DATA_VALID, 1);
243 SET_FIELD(p_queue->q_validity,
244 SCSI_INIT_FUNC_QUEUES_CMD_VALID, 1);
245 } else {
246 SET_FIELD(p_queue->q_validity,
247 SCSI_INIT_FUNC_QUEUES_RQ_VALID, 1);
248 }
249 p_ramrod->tcp_init.two_msl_timer = cpu_to_le32(p_params->two_msl_timer);
250 val = p_params->tx_sws_timer;
251 p_ramrod->tcp_init.tx_sws_timer = cpu_to_le16(val);
252 p_ramrod->tcp_init.maxfinrt = p_params->max_fin_rt;
253
254 p_hwfn->p_iscsi_info->event_context = event_context;
255 p_hwfn->p_iscsi_info->event_cb = async_event_cb;
256
257 return qed_spq_post(p_hwfn, p_ent, NULL);
258 }
259
260 static int qed_sp_iscsi_conn_offload(struct qed_hwfn *p_hwfn,
261 struct qed_iscsi_conn *p_conn,
262 enum spq_mode comp_mode,
263 struct qed_spq_comp_cb *p_comp_addr)
264 {
265 struct iscsi_spe_conn_offload *p_ramrod = NULL;
266 struct tcp_offload_params_opt2 *p_tcp2 = NULL;
267 struct tcp_offload_params *p_tcp = NULL;
268 struct qed_spq_entry *p_ent = NULL;
269 struct qed_sp_init_data init_data;
270 union qed_qm_pq_params pq_params;
271 u16 pq0_id = 0, pq1_id = 0;
272 dma_addr_t r2tq_pbl_addr;
273 dma_addr_t xhq_pbl_addr;
274 dma_addr_t uhq_pbl_addr;
275 int rc = 0;
276 u32 dval;
277 u16 wval;
278 u8 i;
279 u16 *p;
280
281 /* Get SPQ entry */
282 memset(&init_data, 0, sizeof(init_data));
283 init_data.cid = p_conn->icid;
284 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
285 init_data.comp_mode = comp_mode;
286 init_data.p_comp_data = p_comp_addr;
287
288 rc = qed_sp_init_request(p_hwfn, &p_ent,
289 ISCSI_RAMROD_CMD_ID_OFFLOAD_CONN,
290 PROTOCOLID_ISCSI, &init_data);
291 if (rc)
292 return rc;
293
294 p_ramrod = &p_ent->ramrod.iscsi_conn_offload;
295
296 /* Transmission PQ is the first of the PF */
297 memset(&pq_params, 0, sizeof(pq_params));
298 pq0_id = qed_get_qm_pq(p_hwfn, PROTOCOLID_ISCSI, &pq_params);
299 p_conn->physical_q0 = cpu_to_le16(pq0_id);
300 p_ramrod->iscsi.physical_q0 = cpu_to_le16(pq0_id);
301
302 /* iSCSI Pure-ACK PQ */
303 pq_params.iscsi.q_idx = 1;
304 pq1_id = qed_get_qm_pq(p_hwfn, PROTOCOLID_ISCSI, &pq_params);
305 p_conn->physical_q1 = cpu_to_le16(pq1_id);
306 p_ramrod->iscsi.physical_q1 = cpu_to_le16(pq1_id);
307
308 p_ramrod->hdr.op_code = ISCSI_RAMROD_CMD_ID_OFFLOAD_CONN;
309 SET_FIELD(p_ramrod->hdr.flags, ISCSI_SLOW_PATH_HDR_LAYER_CODE,
310 p_conn->layer_code);
311
312 p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id);
313 p_ramrod->fw_cid = cpu_to_le32(p_conn->icid);
314
315 DMA_REGPAIR_LE(p_ramrod->iscsi.sq_pbl_addr, p_conn->sq_pbl_addr);
316
317 r2tq_pbl_addr = qed_chain_get_pbl_phys(&p_conn->r2tq);
318 DMA_REGPAIR_LE(p_ramrod->iscsi.r2tq_pbl_addr, r2tq_pbl_addr);
319
320 xhq_pbl_addr = qed_chain_get_pbl_phys(&p_conn->xhq);
321 DMA_REGPAIR_LE(p_ramrod->iscsi.xhq_pbl_addr, xhq_pbl_addr);
322
323 uhq_pbl_addr = qed_chain_get_pbl_phys(&p_conn->uhq);
324 DMA_REGPAIR_LE(p_ramrod->iscsi.uhq_pbl_addr, uhq_pbl_addr);
325
326 p_ramrod->iscsi.initial_ack = cpu_to_le32(p_conn->initial_ack);
327 p_ramrod->iscsi.flags = p_conn->offl_flags;
328 p_ramrod->iscsi.default_cq = p_conn->default_cq;
329 p_ramrod->iscsi.stat_sn = cpu_to_le32(p_conn->stat_sn);
330
331 if (!GET_FIELD(p_ramrod->iscsi.flags,
332 ISCSI_CONN_OFFLOAD_PARAMS_TCP_ON_CHIP_1B)) {
333 p_tcp = &p_ramrod->tcp;
334
335 p = (u16 *)p_conn->local_mac;
336 p_tcp->local_mac_addr_hi = swab16(get_unaligned(p));
337 p_tcp->local_mac_addr_mid = swab16(get_unaligned(p + 1));
338 p_tcp->local_mac_addr_lo = swab16(get_unaligned(p + 2));
339
340 p = (u16 *)p_conn->remote_mac;
341 p_tcp->remote_mac_addr_hi = swab16(get_unaligned(p));
342 p_tcp->remote_mac_addr_mid = swab16(get_unaligned(p + 1));
343 p_tcp->remote_mac_addr_lo = swab16(get_unaligned(p + 2));
344
345 p_tcp->vlan_id = cpu_to_le16(p_conn->vlan_id);
346
347 p_tcp->flags = p_conn->tcp_flags;
348 p_tcp->ip_version = p_conn->ip_version;
349 for (i = 0; i < 4; i++) {
350 dval = p_conn->remote_ip[i];
351 p_tcp->remote_ip[i] = cpu_to_le32(dval);
352 dval = p_conn->local_ip[i];
353 p_tcp->local_ip[i] = cpu_to_le32(dval);
354 }
355 p_tcp->ka_max_probe_cnt = p_conn->ka_max_probe_cnt;
356 p_tcp->dup_ack_theshold = p_conn->dup_ack_theshold;
357
358 p_tcp->rcv_next = cpu_to_le32(p_conn->rcv_next);
359 p_tcp->snd_una = cpu_to_le32(p_conn->snd_una);
360 p_tcp->snd_next = cpu_to_le32(p_conn->snd_next);
361 p_tcp->snd_max = cpu_to_le32(p_conn->snd_max);
362 p_tcp->snd_wnd = cpu_to_le32(p_conn->snd_wnd);
363 p_tcp->rcv_wnd = cpu_to_le32(p_conn->rcv_wnd);
364 p_tcp->snd_wl1 = cpu_to_le32(p_conn->snd_wl1);
365 p_tcp->cwnd = cpu_to_le32(p_conn->cwnd);
366 p_tcp->ss_thresh = cpu_to_le32(p_conn->ss_thresh);
367 p_tcp->srtt = cpu_to_le16(p_conn->srtt);
368 p_tcp->rtt_var = cpu_to_le16(p_conn->rtt_var);
369 p_tcp->ts_time = cpu_to_le32(p_conn->ts_time);
370 p_tcp->ts_recent = cpu_to_le32(p_conn->ts_recent);
371 p_tcp->ts_recent_age = cpu_to_le32(p_conn->ts_recent_age);
372 p_tcp->total_rt = cpu_to_le32(p_conn->total_rt);
373 dval = p_conn->ka_timeout_delta;
374 p_tcp->ka_timeout_delta = cpu_to_le32(dval);
375 dval = p_conn->rt_timeout_delta;
376 p_tcp->rt_timeout_delta = cpu_to_le32(dval);
377 p_tcp->dup_ack_cnt = p_conn->dup_ack_cnt;
378 p_tcp->snd_wnd_probe_cnt = p_conn->snd_wnd_probe_cnt;
379 p_tcp->ka_probe_cnt = p_conn->ka_probe_cnt;
380 p_tcp->rt_cnt = p_conn->rt_cnt;
381 p_tcp->flow_label = cpu_to_le32(p_conn->flow_label);
382 p_tcp->ka_timeout = cpu_to_le32(p_conn->ka_timeout);
383 p_tcp->ka_interval = cpu_to_le32(p_conn->ka_interval);
384 p_tcp->max_rt_time = cpu_to_le32(p_conn->max_rt_time);
385 dval = p_conn->initial_rcv_wnd;
386 p_tcp->initial_rcv_wnd = cpu_to_le32(dval);
387 p_tcp->ttl = p_conn->ttl;
388 p_tcp->tos_or_tc = p_conn->tos_or_tc;
389 p_tcp->remote_port = cpu_to_le16(p_conn->remote_port);
390 p_tcp->local_port = cpu_to_le16(p_conn->local_port);
391 p_tcp->mss = cpu_to_le16(p_conn->mss);
392 p_tcp->snd_wnd_scale = p_conn->snd_wnd_scale;
393 p_tcp->rcv_wnd_scale = p_conn->rcv_wnd_scale;
394 dval = p_conn->ts_ticks_per_second;
395 p_tcp->ts_ticks_per_second = cpu_to_le32(dval);
396 wval = p_conn->da_timeout_value;
397 p_tcp->da_timeout_value = cpu_to_le16(wval);
398 p_tcp->ack_frequency = p_conn->ack_frequency;
399 p_tcp->connect_mode = p_conn->connect_mode;
400 } else {
401 p_tcp2 =
402 &((struct iscsi_spe_conn_offload_option2 *)p_ramrod)->tcp;
403
404 p = (u16 *)p_conn->local_mac;
405 p_tcp2->local_mac_addr_hi = swab16(get_unaligned(p));
406 p_tcp2->local_mac_addr_mid = swab16(get_unaligned(p + 1));
407 p_tcp2->local_mac_addr_lo = swab16(get_unaligned(p + 2));
408
409 p = (u16 *)p_conn->remote_mac;
410 p_tcp2->remote_mac_addr_hi = swab16(get_unaligned(p));
411 p_tcp2->remote_mac_addr_mid = swab16(get_unaligned(p + 1));
412 p_tcp2->remote_mac_addr_lo = swab16(get_unaligned(p + 2));
413
414 p_tcp2->vlan_id = cpu_to_le16(p_conn->vlan_id);
415 p_tcp2->flags = p_conn->tcp_flags;
416
417 p_tcp2->ip_version = p_conn->ip_version;
418 for (i = 0; i < 4; i++) {
419 dval = p_conn->remote_ip[i];
420 p_tcp2->remote_ip[i] = cpu_to_le32(dval);
421 dval = p_conn->local_ip[i];
422 p_tcp2->local_ip[i] = cpu_to_le32(dval);
423 }
424
425 p_tcp2->flow_label = cpu_to_le32(p_conn->flow_label);
426 p_tcp2->ttl = p_conn->ttl;
427 p_tcp2->tos_or_tc = p_conn->tos_or_tc;
428 p_tcp2->remote_port = cpu_to_le16(p_conn->remote_port);
429 p_tcp2->local_port = cpu_to_le16(p_conn->local_port);
430 p_tcp2->mss = cpu_to_le16(p_conn->mss);
431 p_tcp2->rcv_wnd_scale = p_conn->rcv_wnd_scale;
432 p_tcp2->connect_mode = p_conn->connect_mode;
433 wval = p_conn->syn_ip_payload_length;
434 p_tcp2->syn_ip_payload_length = cpu_to_le16(wval);
435 p_tcp2->syn_phy_addr_lo = DMA_LO_LE(p_conn->syn_phy_addr);
436 p_tcp2->syn_phy_addr_hi = DMA_HI_LE(p_conn->syn_phy_addr);
437 }
438
439 return qed_spq_post(p_hwfn, p_ent, NULL);
440 }
441
442 static int qed_sp_iscsi_conn_update(struct qed_hwfn *p_hwfn,
443 struct qed_iscsi_conn *p_conn,
444 enum spq_mode comp_mode,
445 struct qed_spq_comp_cb *p_comp_addr)
446 {
447 struct iscsi_conn_update_ramrod_params *p_ramrod = NULL;
448 struct qed_spq_entry *p_ent = NULL;
449 struct qed_sp_init_data init_data;
450 int rc = -EINVAL;
451 u32 dval;
452
453 /* Get SPQ entry */
454 memset(&init_data, 0, sizeof(init_data));
455 init_data.cid = p_conn->icid;
456 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
457 init_data.comp_mode = comp_mode;
458 init_data.p_comp_data = p_comp_addr;
459
460 rc = qed_sp_init_request(p_hwfn, &p_ent,
461 ISCSI_RAMROD_CMD_ID_UPDATE_CONN,
462 PROTOCOLID_ISCSI, &init_data);
463 if (rc)
464 return rc;
465
466 p_ramrod = &p_ent->ramrod.iscsi_conn_update;
467 p_ramrod->hdr.op_code = ISCSI_RAMROD_CMD_ID_UPDATE_CONN;
468 SET_FIELD(p_ramrod->hdr.flags,
469 ISCSI_SLOW_PATH_HDR_LAYER_CODE, p_conn->layer_code);
470
471 p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id);
472 p_ramrod->fw_cid = cpu_to_le32(p_conn->icid);
473 p_ramrod->flags = p_conn->update_flag;
474 p_ramrod->max_seq_size = cpu_to_le32(p_conn->max_seq_size);
475 dval = p_conn->max_recv_pdu_length;
476 p_ramrod->max_recv_pdu_length = cpu_to_le32(dval);
477 dval = p_conn->max_send_pdu_length;
478 p_ramrod->max_send_pdu_length = cpu_to_le32(dval);
479 dval = p_conn->first_seq_length;
480 p_ramrod->first_seq_length = cpu_to_le32(dval);
481 p_ramrod->exp_stat_sn = cpu_to_le32(p_conn->exp_stat_sn);
482
483 return qed_spq_post(p_hwfn, p_ent, NULL);
484 }
485
486 static int qed_sp_iscsi_conn_terminate(struct qed_hwfn *p_hwfn,
487 struct qed_iscsi_conn *p_conn,
488 enum spq_mode comp_mode,
489 struct qed_spq_comp_cb *p_comp_addr)
490 {
491 struct iscsi_spe_conn_termination *p_ramrod = NULL;
492 struct qed_spq_entry *p_ent = NULL;
493 struct qed_sp_init_data init_data;
494 int rc = -EINVAL;
495
496 /* Get SPQ entry */
497 memset(&init_data, 0, sizeof(init_data));
498 init_data.cid = p_conn->icid;
499 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
500 init_data.comp_mode = comp_mode;
501 init_data.p_comp_data = p_comp_addr;
502
503 rc = qed_sp_init_request(p_hwfn, &p_ent,
504 ISCSI_RAMROD_CMD_ID_TERMINATION_CONN,
505 PROTOCOLID_ISCSI, &init_data);
506 if (rc)
507 return rc;
508
509 p_ramrod = &p_ent->ramrod.iscsi_conn_terminate;
510 p_ramrod->hdr.op_code = ISCSI_RAMROD_CMD_ID_TERMINATION_CONN;
511 SET_FIELD(p_ramrod->hdr.flags,
512 ISCSI_SLOW_PATH_HDR_LAYER_CODE, p_conn->layer_code);
513
514 p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id);
515 p_ramrod->fw_cid = cpu_to_le32(p_conn->icid);
516 p_ramrod->abortive = p_conn->abortive_dsconnect;
517
518 DMA_REGPAIR_LE(p_ramrod->query_params_addr,
519 p_conn->tcp_upload_params_phys_addr);
520 DMA_REGPAIR_LE(p_ramrod->queue_cnts_addr, p_conn->queue_cnts_phys_addr);
521
522 return qed_spq_post(p_hwfn, p_ent, NULL);
523 }
524
525 static int qed_sp_iscsi_conn_clear_sq(struct qed_hwfn *p_hwfn,
526 struct qed_iscsi_conn *p_conn,
527 enum spq_mode comp_mode,
528 struct qed_spq_comp_cb *p_comp_addr)
529 {
530 struct iscsi_slow_path_hdr *p_ramrod = NULL;
531 struct qed_spq_entry *p_ent = NULL;
532 struct qed_sp_init_data init_data;
533 int rc = -EINVAL;
534
535 /* Get SPQ entry */
536 memset(&init_data, 0, sizeof(init_data));
537 init_data.cid = p_conn->icid;
538 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
539 init_data.comp_mode = comp_mode;
540 init_data.p_comp_data = p_comp_addr;
541
542 rc = qed_sp_init_request(p_hwfn, &p_ent,
543 ISCSI_RAMROD_CMD_ID_CLEAR_SQ,
544 PROTOCOLID_ISCSI, &init_data);
545 if (rc)
546 return rc;
547
548 p_ramrod = &p_ent->ramrod.iscsi_empty;
549 p_ramrod->op_code = ISCSI_RAMROD_CMD_ID_CLEAR_SQ;
550 SET_FIELD(p_ramrod->flags,
551 ISCSI_SLOW_PATH_HDR_LAYER_CODE, p_conn->layer_code);
552
553 return qed_spq_post(p_hwfn, p_ent, NULL);
554 }
555
556 static int qed_sp_iscsi_func_stop(struct qed_hwfn *p_hwfn,
557 enum spq_mode comp_mode,
558 struct qed_spq_comp_cb *p_comp_addr)
559 {
560 struct iscsi_spe_func_dstry *p_ramrod = NULL;
561 struct qed_spq_entry *p_ent = NULL;
562 struct qed_sp_init_data init_data;
563 int rc = 0;
564
565 /* Get SPQ entry */
566 memset(&init_data, 0, sizeof(init_data));
567 init_data.cid = qed_spq_get_cid(p_hwfn);
568 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
569 init_data.comp_mode = comp_mode;
570 init_data.p_comp_data = p_comp_addr;
571
572 rc = qed_sp_init_request(p_hwfn, &p_ent,
573 ISCSI_RAMROD_CMD_ID_DESTROY_FUNC,
574 PROTOCOLID_ISCSI, &init_data);
575 if (rc)
576 return rc;
577
578 p_ramrod = &p_ent->ramrod.iscsi_destroy;
579 p_ramrod->hdr.op_code = ISCSI_RAMROD_CMD_ID_DESTROY_FUNC;
580
581 return qed_spq_post(p_hwfn, p_ent, NULL);
582 }
583
584 static void __iomem *qed_iscsi_get_db_addr(struct qed_hwfn *p_hwfn, u32 cid)
585 {
586 return (u8 __iomem *)p_hwfn->doorbells +
587 qed_db_addr(cid, DQ_DEMS_LEGACY);
588 }
589
590 static void __iomem *qed_iscsi_get_primary_bdq_prod(struct qed_hwfn *p_hwfn,
591 u8 bdq_id)
592 {
593 u8 bdq_function_id = ISCSI_BDQ_ID(p_hwfn->port_id);
594
595 return (u8 __iomem *)p_hwfn->regview + GTT_BAR0_MAP_REG_MSDM_RAM +
596 MSTORM_SCSI_BDQ_EXT_PROD_OFFSET(bdq_function_id,
597 bdq_id);
598 }
599
600 static void __iomem *qed_iscsi_get_secondary_bdq_prod(struct qed_hwfn *p_hwfn,
601 u8 bdq_id)
602 {
603 u8 bdq_function_id = ISCSI_BDQ_ID(p_hwfn->port_id);
604
605 return (u8 __iomem *)p_hwfn->regview + GTT_BAR0_MAP_REG_TSDM_RAM +
606 TSTORM_SCSI_BDQ_EXT_PROD_OFFSET(bdq_function_id,
607 bdq_id);
608 }
609
610 static int qed_iscsi_setup_connection(struct qed_hwfn *p_hwfn,
611 struct qed_iscsi_conn *p_conn)
612 {
613 if (!p_conn->queue_cnts_virt_addr)
614 goto nomem;
615 memset(p_conn->queue_cnts_virt_addr, 0,
616 sizeof(*p_conn->queue_cnts_virt_addr));
617
618 if (!p_conn->tcp_upload_params_virt_addr)
619 goto nomem;
620 memset(p_conn->tcp_upload_params_virt_addr, 0,
621 sizeof(*p_conn->tcp_upload_params_virt_addr));
622
623 if (!p_conn->r2tq.p_virt_addr)
624 goto nomem;
625 qed_chain_pbl_zero_mem(&p_conn->r2tq);
626
627 if (!p_conn->uhq.p_virt_addr)
628 goto nomem;
629 qed_chain_pbl_zero_mem(&p_conn->uhq);
630
631 if (!p_conn->xhq.p_virt_addr)
632 goto nomem;
633 qed_chain_pbl_zero_mem(&p_conn->xhq);
634
635 return 0;
636 nomem:
637 return -ENOMEM;
638 }
639
640 static int qed_iscsi_allocate_connection(struct qed_hwfn *p_hwfn,
641 struct qed_iscsi_conn **p_out_conn)
642 {
643 u16 uhq_num_elements = 0, xhq_num_elements = 0, r2tq_num_elements = 0;
644 struct scsi_terminate_extra_params *p_q_cnts = NULL;
645 struct qed_iscsi_pf_params *p_params = NULL;
646 struct tcp_upload_params *p_tcp = NULL;
647 struct qed_iscsi_conn *p_conn = NULL;
648 int rc = 0;
649
650 /* Try finding a free connection that can be used */
651 spin_lock_bh(&p_hwfn->p_iscsi_info->lock);
652 if (!list_empty(&p_hwfn->p_iscsi_info->free_list))
653 p_conn = list_first_entry(&p_hwfn->p_iscsi_info->free_list,
654 struct qed_iscsi_conn, list_entry);
655 if (p_conn) {
656 list_del(&p_conn->list_entry);
657 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock);
658 *p_out_conn = p_conn;
659 return 0;
660 }
661 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock);
662
663 /* Need to allocate a new connection */
664 p_params = &p_hwfn->pf_params.iscsi_pf_params;
665
666 p_conn = kzalloc(sizeof(*p_conn), GFP_KERNEL);
667 if (!p_conn)
668 return -ENOMEM;
669
670 p_q_cnts = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev,
671 sizeof(*p_q_cnts),
672 &p_conn->queue_cnts_phys_addr,
673 GFP_KERNEL);
674 if (!p_q_cnts)
675 goto nomem_queue_cnts_param;
676 p_conn->queue_cnts_virt_addr = p_q_cnts;
677
678 p_tcp = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev,
679 sizeof(*p_tcp),
680 &p_conn->tcp_upload_params_phys_addr,
681 GFP_KERNEL);
682 if (!p_tcp)
683 goto nomem_upload_param;
684 p_conn->tcp_upload_params_virt_addr = p_tcp;
685
686 r2tq_num_elements = p_params->num_r2tq_pages_in_ring *
687 QED_CHAIN_PAGE_SIZE / 0x80;
688 rc = qed_chain_alloc(p_hwfn->cdev,
689 QED_CHAIN_USE_TO_CONSUME_PRODUCE,
690 QED_CHAIN_MODE_PBL,
691 QED_CHAIN_CNT_TYPE_U16,
692 r2tq_num_elements, 0x80, &p_conn->r2tq);
693 if (rc)
694 goto nomem_r2tq;
695
696 uhq_num_elements = p_params->num_uhq_pages_in_ring *
697 QED_CHAIN_PAGE_SIZE / sizeof(struct iscsi_uhqe);
698 rc = qed_chain_alloc(p_hwfn->cdev,
699 QED_CHAIN_USE_TO_CONSUME_PRODUCE,
700 QED_CHAIN_MODE_PBL,
701 QED_CHAIN_CNT_TYPE_U16,
702 uhq_num_elements,
703 sizeof(struct iscsi_uhqe), &p_conn->uhq);
704 if (rc)
705 goto nomem_uhq;
706
707 xhq_num_elements = uhq_num_elements;
708 rc = qed_chain_alloc(p_hwfn->cdev,
709 QED_CHAIN_USE_TO_CONSUME_PRODUCE,
710 QED_CHAIN_MODE_PBL,
711 QED_CHAIN_CNT_TYPE_U16,
712 xhq_num_elements,
713 sizeof(struct iscsi_xhqe), &p_conn->xhq);
714 if (rc)
715 goto nomem;
716
717 p_conn->free_on_delete = true;
718 *p_out_conn = p_conn;
719 return 0;
720
721 nomem:
722 qed_chain_free(p_hwfn->cdev, &p_conn->uhq);
723 nomem_uhq:
724 qed_chain_free(p_hwfn->cdev, &p_conn->r2tq);
725 nomem_r2tq:
726 dma_free_coherent(&p_hwfn->cdev->pdev->dev,
727 sizeof(struct tcp_upload_params),
728 p_conn->tcp_upload_params_virt_addr,
729 p_conn->tcp_upload_params_phys_addr);
730 nomem_upload_param:
731 dma_free_coherent(&p_hwfn->cdev->pdev->dev,
732 sizeof(struct scsi_terminate_extra_params),
733 p_conn->queue_cnts_virt_addr,
734 p_conn->queue_cnts_phys_addr);
735 nomem_queue_cnts_param:
736 kfree(p_conn);
737
738 return -ENOMEM;
739 }
740
741 static int qed_iscsi_acquire_connection(struct qed_hwfn *p_hwfn,
742 struct qed_iscsi_conn *p_in_conn,
743 struct qed_iscsi_conn **p_out_conn)
744 {
745 struct qed_iscsi_conn *p_conn = NULL;
746 int rc = 0;
747 u32 icid;
748
749 spin_lock_bh(&p_hwfn->p_iscsi_info->lock);
750 rc = qed_cxt_acquire_cid(p_hwfn, PROTOCOLID_ISCSI, &icid);
751 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock);
752 if (rc)
753 return rc;
754
755 /* Use input connection or allocate a new one */
756 if (p_in_conn)
757 p_conn = p_in_conn;
758 else
759 rc = qed_iscsi_allocate_connection(p_hwfn, &p_conn);
760
761 if (!rc)
762 rc = qed_iscsi_setup_connection(p_hwfn, p_conn);
763
764 if (rc) {
765 spin_lock_bh(&p_hwfn->p_iscsi_info->lock);
766 qed_cxt_release_cid(p_hwfn, icid);
767 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock);
768 return rc;
769 }
770
771 p_conn->icid = icid;
772 p_conn->conn_id = (u16)icid;
773 p_conn->fw_cid = (p_hwfn->hw_info.opaque_fid << 16) | icid;
774
775 *p_out_conn = p_conn;
776
777 return rc;
778 }
779
780 static void qed_iscsi_release_connection(struct qed_hwfn *p_hwfn,
781 struct qed_iscsi_conn *p_conn)
782 {
783 spin_lock_bh(&p_hwfn->p_iscsi_info->lock);
784 list_add_tail(&p_conn->list_entry, &p_hwfn->p_iscsi_info->free_list);
785 qed_cxt_release_cid(p_hwfn, p_conn->icid);
786 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock);
787 }
788
789 struct qed_iscsi_info *qed_iscsi_alloc(struct qed_hwfn *p_hwfn)
790 {
791 struct qed_iscsi_info *p_iscsi_info;
792
793 p_iscsi_info = kzalloc(sizeof(*p_iscsi_info), GFP_KERNEL);
794 if (!p_iscsi_info)
795 return NULL;
796
797 INIT_LIST_HEAD(&p_iscsi_info->free_list);
798 return p_iscsi_info;
799 }
800
801 void qed_iscsi_setup(struct qed_hwfn *p_hwfn,
802 struct qed_iscsi_info *p_iscsi_info)
803 {
804 spin_lock_init(&p_iscsi_info->lock);
805 }
806
807 void qed_iscsi_free(struct qed_hwfn *p_hwfn,
808 struct qed_iscsi_info *p_iscsi_info)
809 {
810 kfree(p_iscsi_info);
811 }
812
813 static void _qed_iscsi_get_tstats(struct qed_hwfn *p_hwfn,
814 struct qed_ptt *p_ptt,
815 struct qed_iscsi_stats *p_stats)
816 {
817 struct tstorm_iscsi_stats_drv tstats;
818 u32 tstats_addr;
819
820 memset(&tstats, 0, sizeof(tstats));
821 tstats_addr = BAR0_MAP_REG_TSDM_RAM +
822 TSTORM_ISCSI_RX_STATS_OFFSET(p_hwfn->rel_pf_id);
823 qed_memcpy_from(p_hwfn, p_ptt, &tstats, tstats_addr, sizeof(tstats));
824
825 p_stats->iscsi_rx_bytes_cnt =
826 HILO_64_REGPAIR(tstats.iscsi_rx_bytes_cnt);
827 p_stats->iscsi_rx_packet_cnt =
828 HILO_64_REGPAIR(tstats.iscsi_rx_packet_cnt);
829 p_stats->iscsi_cmdq_threshold_cnt =
830 le32_to_cpu(tstats.iscsi_cmdq_threshold_cnt);
831 p_stats->iscsi_rq_threshold_cnt =
832 le32_to_cpu(tstats.iscsi_rq_threshold_cnt);
833 p_stats->iscsi_immq_threshold_cnt =
834 le32_to_cpu(tstats.iscsi_immq_threshold_cnt);
835 }
836
837 static void _qed_iscsi_get_mstats(struct qed_hwfn *p_hwfn,
838 struct qed_ptt *p_ptt,
839 struct qed_iscsi_stats *p_stats)
840 {
841 struct mstorm_iscsi_stats_drv mstats;
842 u32 mstats_addr;
843
844 memset(&mstats, 0, sizeof(mstats));
845 mstats_addr = BAR0_MAP_REG_MSDM_RAM +
846 MSTORM_ISCSI_RX_STATS_OFFSET(p_hwfn->rel_pf_id);
847 qed_memcpy_from(p_hwfn, p_ptt, &mstats, mstats_addr, sizeof(mstats));
848
849 p_stats->iscsi_rx_dropped_pdus_task_not_valid =
850 HILO_64_REGPAIR(mstats.iscsi_rx_dropped_pdus_task_not_valid);
851 }
852
853 static void _qed_iscsi_get_ustats(struct qed_hwfn *p_hwfn,
854 struct qed_ptt *p_ptt,
855 struct qed_iscsi_stats *p_stats)
856 {
857 struct ustorm_iscsi_stats_drv ustats;
858 u32 ustats_addr;
859
860 memset(&ustats, 0, sizeof(ustats));
861 ustats_addr = BAR0_MAP_REG_USDM_RAM +
862 USTORM_ISCSI_RX_STATS_OFFSET(p_hwfn->rel_pf_id);
863 qed_memcpy_from(p_hwfn, p_ptt, &ustats, ustats_addr, sizeof(ustats));
864
865 p_stats->iscsi_rx_data_pdu_cnt =
866 HILO_64_REGPAIR(ustats.iscsi_rx_data_pdu_cnt);
867 p_stats->iscsi_rx_r2t_pdu_cnt =
868 HILO_64_REGPAIR(ustats.iscsi_rx_r2t_pdu_cnt);
869 p_stats->iscsi_rx_total_pdu_cnt =
870 HILO_64_REGPAIR(ustats.iscsi_rx_total_pdu_cnt);
871 }
872
873 static void _qed_iscsi_get_xstats(struct qed_hwfn *p_hwfn,
874 struct qed_ptt *p_ptt,
875 struct qed_iscsi_stats *p_stats)
876 {
877 struct xstorm_iscsi_stats_drv xstats;
878 u32 xstats_addr;
879
880 memset(&xstats, 0, sizeof(xstats));
881 xstats_addr = BAR0_MAP_REG_XSDM_RAM +
882 XSTORM_ISCSI_TX_STATS_OFFSET(p_hwfn->rel_pf_id);
883 qed_memcpy_from(p_hwfn, p_ptt, &xstats, xstats_addr, sizeof(xstats));
884
885 p_stats->iscsi_tx_go_to_slow_start_event_cnt =
886 HILO_64_REGPAIR(xstats.iscsi_tx_go_to_slow_start_event_cnt);
887 p_stats->iscsi_tx_fast_retransmit_event_cnt =
888 HILO_64_REGPAIR(xstats.iscsi_tx_fast_retransmit_event_cnt);
889 }
890
891 static void _qed_iscsi_get_ystats(struct qed_hwfn *p_hwfn,
892 struct qed_ptt *p_ptt,
893 struct qed_iscsi_stats *p_stats)
894 {
895 struct ystorm_iscsi_stats_drv ystats;
896 u32 ystats_addr;
897
898 memset(&ystats, 0, sizeof(ystats));
899 ystats_addr = BAR0_MAP_REG_YSDM_RAM +
900 YSTORM_ISCSI_TX_STATS_OFFSET(p_hwfn->rel_pf_id);
901 qed_memcpy_from(p_hwfn, p_ptt, &ystats, ystats_addr, sizeof(ystats));
902
903 p_stats->iscsi_tx_data_pdu_cnt =
904 HILO_64_REGPAIR(ystats.iscsi_tx_data_pdu_cnt);
905 p_stats->iscsi_tx_r2t_pdu_cnt =
906 HILO_64_REGPAIR(ystats.iscsi_tx_r2t_pdu_cnt);
907 p_stats->iscsi_tx_total_pdu_cnt =
908 HILO_64_REGPAIR(ystats.iscsi_tx_total_pdu_cnt);
909 }
910
911 static void _qed_iscsi_get_pstats(struct qed_hwfn *p_hwfn,
912 struct qed_ptt *p_ptt,
913 struct qed_iscsi_stats *p_stats)
914 {
915 struct pstorm_iscsi_stats_drv pstats;
916 u32 pstats_addr;
917
918 memset(&pstats, 0, sizeof(pstats));
919 pstats_addr = BAR0_MAP_REG_PSDM_RAM +
920 PSTORM_ISCSI_TX_STATS_OFFSET(p_hwfn->rel_pf_id);
921 qed_memcpy_from(p_hwfn, p_ptt, &pstats, pstats_addr, sizeof(pstats));
922
923 p_stats->iscsi_tx_bytes_cnt =
924 HILO_64_REGPAIR(pstats.iscsi_tx_bytes_cnt);
925 p_stats->iscsi_tx_packet_cnt =
926 HILO_64_REGPAIR(pstats.iscsi_tx_packet_cnt);
927 }
928
929 static int qed_iscsi_get_stats(struct qed_hwfn *p_hwfn,
930 struct qed_iscsi_stats *stats)
931 {
932 struct qed_ptt *p_ptt;
933
934 memset(stats, 0, sizeof(*stats));
935
936 p_ptt = qed_ptt_acquire(p_hwfn);
937 if (!p_ptt) {
938 DP_ERR(p_hwfn, "Failed to acquire ptt\n");
939 return -EAGAIN;
940 }
941
942 _qed_iscsi_get_tstats(p_hwfn, p_ptt, stats);
943 _qed_iscsi_get_mstats(p_hwfn, p_ptt, stats);
944 _qed_iscsi_get_ustats(p_hwfn, p_ptt, stats);
945
946 _qed_iscsi_get_xstats(p_hwfn, p_ptt, stats);
947 _qed_iscsi_get_ystats(p_hwfn, p_ptt, stats);
948 _qed_iscsi_get_pstats(p_hwfn, p_ptt, stats);
949
950 qed_ptt_release(p_hwfn, p_ptt);
951
952 return 0;
953 }
954
955 struct qed_hash_iscsi_con {
956 struct hlist_node node;
957 struct qed_iscsi_conn *con;
958 };
959
960 static int qed_fill_iscsi_dev_info(struct qed_dev *cdev,
961 struct qed_dev_iscsi_info *info)
962 {
963 struct qed_hwfn *hwfn = QED_LEADING_HWFN(cdev);
964
965 int rc;
966
967 memset(info, 0, sizeof(*info));
968 rc = qed_fill_dev_info(cdev, &info->common);
969
970 info->primary_dbq_rq_addr =
971 qed_iscsi_get_primary_bdq_prod(hwfn, BDQ_ID_RQ);
972 info->secondary_bdq_rq_addr =
973 qed_iscsi_get_secondary_bdq_prod(hwfn, BDQ_ID_RQ);
974
975 return rc;
976 }
977
978 static void qed_register_iscsi_ops(struct qed_dev *cdev,
979 struct qed_iscsi_cb_ops *ops, void *cookie)
980 {
981 cdev->protocol_ops.iscsi = ops;
982 cdev->ops_cookie = cookie;
983 }
984
985 static struct qed_hash_iscsi_con *qed_iscsi_get_hash(struct qed_dev *cdev,
986 u32 handle)
987 {
988 struct qed_hash_iscsi_con *hash_con = NULL;
989
990 if (!(cdev->flags & QED_FLAG_STORAGE_STARTED))
991 return NULL;
992
993 hash_for_each_possible(cdev->connections, hash_con, node, handle) {
994 if (hash_con->con->icid == handle)
995 break;
996 }
997
998 if (!hash_con || (hash_con->con->icid != handle))
999 return NULL;
1000
1001 return hash_con;
1002 }
1003
1004 static int qed_iscsi_stop(struct qed_dev *cdev)
1005 {
1006 int rc;
1007
1008 if (!(cdev->flags & QED_FLAG_STORAGE_STARTED)) {
1009 DP_NOTICE(cdev, "iscsi already stopped\n");
1010 return 0;
1011 }
1012
1013 if (!hash_empty(cdev->connections)) {
1014 DP_NOTICE(cdev,
1015 "Can't stop iscsi - not all connections were returned\n");
1016 return -EINVAL;
1017 }
1018
1019 /* Stop the iscsi */
1020 rc = qed_sp_iscsi_func_stop(QED_LEADING_HWFN(cdev),
1021 QED_SPQ_MODE_EBLOCK, NULL);
1022 cdev->flags &= ~QED_FLAG_STORAGE_STARTED;
1023
1024 return rc;
1025 }
1026
1027 static int qed_iscsi_start(struct qed_dev *cdev,
1028 struct qed_iscsi_tid *tasks,
1029 void *event_context,
1030 iscsi_event_cb_t async_event_cb)
1031 {
1032 int rc;
1033 struct qed_tid_mem *tid_info;
1034
1035 if (cdev->flags & QED_FLAG_STORAGE_STARTED) {
1036 DP_NOTICE(cdev, "iscsi already started;\n");
1037 return 0;
1038 }
1039
1040 rc = qed_sp_iscsi_func_start(QED_LEADING_HWFN(cdev),
1041 QED_SPQ_MODE_EBLOCK, NULL, event_context,
1042 async_event_cb);
1043 if (rc) {
1044 DP_NOTICE(cdev, "Failed to start iscsi\n");
1045 return rc;
1046 }
1047
1048 cdev->flags |= QED_FLAG_STORAGE_STARTED;
1049 hash_init(cdev->connections);
1050
1051 if (!tasks)
1052 return 0;
1053
1054 tid_info = kzalloc(sizeof(*tid_info), GFP_KERNEL);
1055
1056 if (!tid_info) {
1057 qed_iscsi_stop(cdev);
1058 return -ENOMEM;
1059 }
1060
1061 rc = qed_cxt_get_tid_mem_info(QED_LEADING_HWFN(cdev),
1062 tid_info);
1063 if (rc) {
1064 DP_NOTICE(cdev, "Failed to gather task information\n");
1065 qed_iscsi_stop(cdev);
1066 kfree(tid_info);
1067 return rc;
1068 }
1069
1070 /* Fill task information */
1071 tasks->size = tid_info->tid_size;
1072 tasks->num_tids_per_block = tid_info->num_tids_per_block;
1073 memcpy(tasks->blocks, tid_info->blocks,
1074 MAX_TID_BLOCKS_ISCSI * sizeof(u8 *));
1075
1076 kfree(tid_info);
1077
1078 return 0;
1079 }
1080
1081 static int qed_iscsi_acquire_conn(struct qed_dev *cdev,
1082 u32 *handle,
1083 u32 *fw_cid, void __iomem **p_doorbell)
1084 {
1085 struct qed_hash_iscsi_con *hash_con;
1086 int rc;
1087
1088 /* Allocate a hashed connection */
1089 hash_con = kzalloc(sizeof(*hash_con), GFP_ATOMIC);
1090 if (!hash_con)
1091 return -ENOMEM;
1092
1093 /* Acquire the connection */
1094 rc = qed_iscsi_acquire_connection(QED_LEADING_HWFN(cdev), NULL,
1095 &hash_con->con);
1096 if (rc) {
1097 DP_NOTICE(cdev, "Failed to acquire Connection\n");
1098 kfree(hash_con);
1099 return rc;
1100 }
1101
1102 /* Added the connection to hash table */
1103 *handle = hash_con->con->icid;
1104 *fw_cid = hash_con->con->fw_cid;
1105 hash_add(cdev->connections, &hash_con->node, *handle);
1106
1107 if (p_doorbell)
1108 *p_doorbell = qed_iscsi_get_db_addr(QED_LEADING_HWFN(cdev),
1109 *handle);
1110
1111 return 0;
1112 }
1113
1114 static int qed_iscsi_release_conn(struct qed_dev *cdev, u32 handle)
1115 {
1116 struct qed_hash_iscsi_con *hash_con;
1117
1118 hash_con = qed_iscsi_get_hash(cdev, handle);
1119 if (!hash_con) {
1120 DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
1121 handle);
1122 return -EINVAL;
1123 }
1124
1125 hlist_del(&hash_con->node);
1126 qed_iscsi_release_connection(QED_LEADING_HWFN(cdev), hash_con->con);
1127 kfree(hash_con);
1128
1129 return 0;
1130 }
1131
1132 static int qed_iscsi_offload_conn(struct qed_dev *cdev,
1133 u32 handle,
1134 struct qed_iscsi_params_offload *conn_info)
1135 {
1136 struct qed_hash_iscsi_con *hash_con;
1137 struct qed_iscsi_conn *con;
1138
1139 hash_con = qed_iscsi_get_hash(cdev, handle);
1140 if (!hash_con) {
1141 DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
1142 handle);
1143 return -EINVAL;
1144 }
1145
1146 /* Update the connection with information from the params */
1147 con = hash_con->con;
1148
1149 ether_addr_copy(con->local_mac, conn_info->src.mac);
1150 ether_addr_copy(con->remote_mac, conn_info->dst.mac);
1151 memcpy(con->local_ip, conn_info->src.ip, sizeof(con->local_ip));
1152 memcpy(con->remote_ip, conn_info->dst.ip, sizeof(con->remote_ip));
1153 con->local_port = conn_info->src.port;
1154 con->remote_port = conn_info->dst.port;
1155
1156 con->layer_code = conn_info->layer_code;
1157 con->sq_pbl_addr = conn_info->sq_pbl_addr;
1158 con->initial_ack = conn_info->initial_ack;
1159 con->vlan_id = conn_info->vlan_id;
1160 con->tcp_flags = conn_info->tcp_flags;
1161 con->ip_version = conn_info->ip_version;
1162 con->default_cq = conn_info->default_cq;
1163 con->ka_max_probe_cnt = conn_info->ka_max_probe_cnt;
1164 con->dup_ack_theshold = conn_info->dup_ack_theshold;
1165 con->rcv_next = conn_info->rcv_next;
1166 con->snd_una = conn_info->snd_una;
1167 con->snd_next = conn_info->snd_next;
1168 con->snd_max = conn_info->snd_max;
1169 con->snd_wnd = conn_info->snd_wnd;
1170 con->rcv_wnd = conn_info->rcv_wnd;
1171 con->snd_wl1 = conn_info->snd_wl1;
1172 con->cwnd = conn_info->cwnd;
1173 con->ss_thresh = conn_info->ss_thresh;
1174 con->srtt = conn_info->srtt;
1175 con->rtt_var = conn_info->rtt_var;
1176 con->ts_time = conn_info->ts_time;
1177 con->ts_recent = conn_info->ts_recent;
1178 con->ts_recent_age = conn_info->ts_recent_age;
1179 con->total_rt = conn_info->total_rt;
1180 con->ka_timeout_delta = conn_info->ka_timeout_delta;
1181 con->rt_timeout_delta = conn_info->rt_timeout_delta;
1182 con->dup_ack_cnt = conn_info->dup_ack_cnt;
1183 con->snd_wnd_probe_cnt = conn_info->snd_wnd_probe_cnt;
1184 con->ka_probe_cnt = conn_info->ka_probe_cnt;
1185 con->rt_cnt = conn_info->rt_cnt;
1186 con->flow_label = conn_info->flow_label;
1187 con->ka_timeout = conn_info->ka_timeout;
1188 con->ka_interval = conn_info->ka_interval;
1189 con->max_rt_time = conn_info->max_rt_time;
1190 con->initial_rcv_wnd = conn_info->initial_rcv_wnd;
1191 con->ttl = conn_info->ttl;
1192 con->tos_or_tc = conn_info->tos_or_tc;
1193 con->remote_port = conn_info->remote_port;
1194 con->local_port = conn_info->local_port;
1195 con->mss = conn_info->mss;
1196 con->snd_wnd_scale = conn_info->snd_wnd_scale;
1197 con->rcv_wnd_scale = conn_info->rcv_wnd_scale;
1198 con->ts_ticks_per_second = conn_info->ts_ticks_per_second;
1199 con->da_timeout_value = conn_info->da_timeout_value;
1200 con->ack_frequency = conn_info->ack_frequency;
1201
1202 /* Set default values on other connection fields */
1203 con->offl_flags = 0x1;
1204
1205 return qed_sp_iscsi_conn_offload(QED_LEADING_HWFN(cdev), con,
1206 QED_SPQ_MODE_EBLOCK, NULL);
1207 }
1208
1209 static int qed_iscsi_update_conn(struct qed_dev *cdev,
1210 u32 handle,
1211 struct qed_iscsi_params_update *conn_info)
1212 {
1213 struct qed_hash_iscsi_con *hash_con;
1214 struct qed_iscsi_conn *con;
1215
1216 hash_con = qed_iscsi_get_hash(cdev, handle);
1217 if (!hash_con) {
1218 DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
1219 handle);
1220 return -EINVAL;
1221 }
1222
1223 /* Update the connection with information from the params */
1224 con = hash_con->con;
1225 con->update_flag = conn_info->update_flag;
1226 con->max_seq_size = conn_info->max_seq_size;
1227 con->max_recv_pdu_length = conn_info->max_recv_pdu_length;
1228 con->max_send_pdu_length = conn_info->max_send_pdu_length;
1229 con->first_seq_length = conn_info->first_seq_length;
1230 con->exp_stat_sn = conn_info->exp_stat_sn;
1231
1232 return qed_sp_iscsi_conn_update(QED_LEADING_HWFN(cdev), con,
1233 QED_SPQ_MODE_EBLOCK, NULL);
1234 }
1235
1236 static int qed_iscsi_clear_conn_sq(struct qed_dev *cdev, u32 handle)
1237 {
1238 struct qed_hash_iscsi_con *hash_con;
1239
1240 hash_con = qed_iscsi_get_hash(cdev, handle);
1241 if (!hash_con) {
1242 DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
1243 handle);
1244 return -EINVAL;
1245 }
1246
1247 return qed_sp_iscsi_conn_clear_sq(QED_LEADING_HWFN(cdev),
1248 hash_con->con,
1249 QED_SPQ_MODE_EBLOCK, NULL);
1250 }
1251
1252 static int qed_iscsi_destroy_conn(struct qed_dev *cdev,
1253 u32 handle, u8 abrt_conn)
1254 {
1255 struct qed_hash_iscsi_con *hash_con;
1256
1257 hash_con = qed_iscsi_get_hash(cdev, handle);
1258 if (!hash_con) {
1259 DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
1260 handle);
1261 return -EINVAL;
1262 }
1263
1264 hash_con->con->abortive_dsconnect = abrt_conn;
1265
1266 return qed_sp_iscsi_conn_terminate(QED_LEADING_HWFN(cdev),
1267 hash_con->con,
1268 QED_SPQ_MODE_EBLOCK, NULL);
1269 }
1270
1271 static int qed_iscsi_stats(struct qed_dev *cdev, struct qed_iscsi_stats *stats)
1272 {
1273 return qed_iscsi_get_stats(QED_LEADING_HWFN(cdev), stats);
1274 }
1275
1276 static const struct qed_iscsi_ops qed_iscsi_ops_pass = {
1277 .common = &qed_common_ops_pass,
1278 .ll2 = &qed_ll2_ops_pass,
1279 .fill_dev_info = &qed_fill_iscsi_dev_info,
1280 .register_ops = &qed_register_iscsi_ops,
1281 .start = &qed_iscsi_start,
1282 .stop = &qed_iscsi_stop,
1283 .acquire_conn = &qed_iscsi_acquire_conn,
1284 .release_conn = &qed_iscsi_release_conn,
1285 .offload_conn = &qed_iscsi_offload_conn,
1286 .update_conn = &qed_iscsi_update_conn,
1287 .destroy_conn = &qed_iscsi_destroy_conn,
1288 .clear_sq = &qed_iscsi_clear_conn_sq,
1289 .get_stats = &qed_iscsi_stats,
1290 };
1291
1292 const struct qed_iscsi_ops *qed_get_iscsi_ops(void)
1293 {
1294 return &qed_iscsi_ops_pass;
1295 }
1296 EXPORT_SYMBOL(qed_get_iscsi_ops);
1297
1298 void qed_put_iscsi_ops(void)
1299 {
1300 }
1301 EXPORT_SYMBOL(qed_put_iscsi_ops);
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