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qed: Revise QM cofiguration
[mirror_ubuntu-artful-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 = (u8)RESC_START(p_hwfn, QED_BDQ);
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 dma_addr_t r2tq_pbl_addr;
274 dma_addr_t xhq_pbl_addr;
275 dma_addr_t uhq_pbl_addr;
276 u16 physical_q;
277 int rc = 0;
278 u32 dval;
279 u16 wval;
280 u8 i;
281 u16 *p;
282
283 /* Get SPQ entry */
284 memset(&init_data, 0, sizeof(init_data));
285 init_data.cid = p_conn->icid;
286 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
287 init_data.comp_mode = comp_mode;
288 init_data.p_comp_data = p_comp_addr;
289
290 rc = qed_sp_init_request(p_hwfn, &p_ent,
291 ISCSI_RAMROD_CMD_ID_OFFLOAD_CONN,
292 PROTOCOLID_ISCSI, &init_data);
293 if (rc)
294 return rc;
295
296 p_ramrod = &p_ent->ramrod.iscsi_conn_offload;
297
298 /* Transmission PQ is the first of the PF */
299 physical_q = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_OFLD);
300 p_conn->physical_q0 = cpu_to_le16(physical_q);
301 p_ramrod->iscsi.physical_q0 = cpu_to_le16(physical_q);
302
303 /* iSCSI Pure-ACK PQ */
304 physical_q = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_ACK);
305 p_conn->physical_q1 = cpu_to_le16(physical_q);
306 p_ramrod->iscsi.physical_q1 = cpu_to_le16(physical_q);
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 if (RESC_NUM(p_hwfn, QED_BDQ)) {
594 return (u8 __iomem *)p_hwfn->regview +
595 GTT_BAR0_MAP_REG_MSDM_RAM +
596 MSTORM_SCSI_BDQ_EXT_PROD_OFFSET(RESC_START(p_hwfn,
597 QED_BDQ),
598 bdq_id);
599 } else {
600 DP_NOTICE(p_hwfn, "BDQ is not allocated!\n");
601 return NULL;
602 }
603 }
604
605 static void __iomem *qed_iscsi_get_secondary_bdq_prod(struct qed_hwfn *p_hwfn,
606 u8 bdq_id)
607 {
608 if (RESC_NUM(p_hwfn, QED_BDQ)) {
609 return (u8 __iomem *)p_hwfn->regview +
610 GTT_BAR0_MAP_REG_TSDM_RAM +
611 TSTORM_SCSI_BDQ_EXT_PROD_OFFSET(RESC_START(p_hwfn,
612 QED_BDQ),
613 bdq_id);
614 } else {
615 DP_NOTICE(p_hwfn, "BDQ is not allocated!\n");
616 return NULL;
617 }
618 }
619
620 static int qed_iscsi_setup_connection(struct qed_hwfn *p_hwfn,
621 struct qed_iscsi_conn *p_conn)
622 {
623 if (!p_conn->queue_cnts_virt_addr)
624 goto nomem;
625 memset(p_conn->queue_cnts_virt_addr, 0,
626 sizeof(*p_conn->queue_cnts_virt_addr));
627
628 if (!p_conn->tcp_upload_params_virt_addr)
629 goto nomem;
630 memset(p_conn->tcp_upload_params_virt_addr, 0,
631 sizeof(*p_conn->tcp_upload_params_virt_addr));
632
633 if (!p_conn->r2tq.p_virt_addr)
634 goto nomem;
635 qed_chain_pbl_zero_mem(&p_conn->r2tq);
636
637 if (!p_conn->uhq.p_virt_addr)
638 goto nomem;
639 qed_chain_pbl_zero_mem(&p_conn->uhq);
640
641 if (!p_conn->xhq.p_virt_addr)
642 goto nomem;
643 qed_chain_pbl_zero_mem(&p_conn->xhq);
644
645 return 0;
646 nomem:
647 return -ENOMEM;
648 }
649
650 static int qed_iscsi_allocate_connection(struct qed_hwfn *p_hwfn,
651 struct qed_iscsi_conn **p_out_conn)
652 {
653 u16 uhq_num_elements = 0, xhq_num_elements = 0, r2tq_num_elements = 0;
654 struct scsi_terminate_extra_params *p_q_cnts = NULL;
655 struct qed_iscsi_pf_params *p_params = NULL;
656 struct tcp_upload_params *p_tcp = NULL;
657 struct qed_iscsi_conn *p_conn = NULL;
658 int rc = 0;
659
660 /* Try finding a free connection that can be used */
661 spin_lock_bh(&p_hwfn->p_iscsi_info->lock);
662 if (!list_empty(&p_hwfn->p_iscsi_info->free_list))
663 p_conn = list_first_entry(&p_hwfn->p_iscsi_info->free_list,
664 struct qed_iscsi_conn, list_entry);
665 if (p_conn) {
666 list_del(&p_conn->list_entry);
667 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock);
668 *p_out_conn = p_conn;
669 return 0;
670 }
671 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock);
672
673 /* Need to allocate a new connection */
674 p_params = &p_hwfn->pf_params.iscsi_pf_params;
675
676 p_conn = kzalloc(sizeof(*p_conn), GFP_KERNEL);
677 if (!p_conn)
678 return -ENOMEM;
679
680 p_q_cnts = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev,
681 sizeof(*p_q_cnts),
682 &p_conn->queue_cnts_phys_addr,
683 GFP_KERNEL);
684 if (!p_q_cnts)
685 goto nomem_queue_cnts_param;
686 p_conn->queue_cnts_virt_addr = p_q_cnts;
687
688 p_tcp = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev,
689 sizeof(*p_tcp),
690 &p_conn->tcp_upload_params_phys_addr,
691 GFP_KERNEL);
692 if (!p_tcp)
693 goto nomem_upload_param;
694 p_conn->tcp_upload_params_virt_addr = p_tcp;
695
696 r2tq_num_elements = p_params->num_r2tq_pages_in_ring *
697 QED_CHAIN_PAGE_SIZE / 0x80;
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 r2tq_num_elements, 0x80, &p_conn->r2tq);
703 if (rc)
704 goto nomem_r2tq;
705
706 uhq_num_elements = p_params->num_uhq_pages_in_ring *
707 QED_CHAIN_PAGE_SIZE / sizeof(struct iscsi_uhqe);
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 uhq_num_elements,
713 sizeof(struct iscsi_uhqe), &p_conn->uhq);
714 if (rc)
715 goto nomem_uhq;
716
717 xhq_num_elements = uhq_num_elements;
718 rc = qed_chain_alloc(p_hwfn->cdev,
719 QED_CHAIN_USE_TO_CONSUME_PRODUCE,
720 QED_CHAIN_MODE_PBL,
721 QED_CHAIN_CNT_TYPE_U16,
722 xhq_num_elements,
723 sizeof(struct iscsi_xhqe), &p_conn->xhq);
724 if (rc)
725 goto nomem;
726
727 p_conn->free_on_delete = true;
728 *p_out_conn = p_conn;
729 return 0;
730
731 nomem:
732 qed_chain_free(p_hwfn->cdev, &p_conn->uhq);
733 nomem_uhq:
734 qed_chain_free(p_hwfn->cdev, &p_conn->r2tq);
735 nomem_r2tq:
736 dma_free_coherent(&p_hwfn->cdev->pdev->dev,
737 sizeof(struct tcp_upload_params),
738 p_conn->tcp_upload_params_virt_addr,
739 p_conn->tcp_upload_params_phys_addr);
740 nomem_upload_param:
741 dma_free_coherent(&p_hwfn->cdev->pdev->dev,
742 sizeof(struct scsi_terminate_extra_params),
743 p_conn->queue_cnts_virt_addr,
744 p_conn->queue_cnts_phys_addr);
745 nomem_queue_cnts_param:
746 kfree(p_conn);
747
748 return -ENOMEM;
749 }
750
751 static int qed_iscsi_acquire_connection(struct qed_hwfn *p_hwfn,
752 struct qed_iscsi_conn *p_in_conn,
753 struct qed_iscsi_conn **p_out_conn)
754 {
755 struct qed_iscsi_conn *p_conn = NULL;
756 int rc = 0;
757 u32 icid;
758
759 spin_lock_bh(&p_hwfn->p_iscsi_info->lock);
760 rc = qed_cxt_acquire_cid(p_hwfn, PROTOCOLID_ISCSI, &icid);
761 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock);
762 if (rc)
763 return rc;
764
765 /* Use input connection or allocate a new one */
766 if (p_in_conn)
767 p_conn = p_in_conn;
768 else
769 rc = qed_iscsi_allocate_connection(p_hwfn, &p_conn);
770
771 if (!rc)
772 rc = qed_iscsi_setup_connection(p_hwfn, p_conn);
773
774 if (rc) {
775 spin_lock_bh(&p_hwfn->p_iscsi_info->lock);
776 qed_cxt_release_cid(p_hwfn, icid);
777 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock);
778 return rc;
779 }
780
781 p_conn->icid = icid;
782 p_conn->conn_id = (u16)icid;
783 p_conn->fw_cid = (p_hwfn->hw_info.opaque_fid << 16) | icid;
784
785 *p_out_conn = p_conn;
786
787 return rc;
788 }
789
790 static void qed_iscsi_release_connection(struct qed_hwfn *p_hwfn,
791 struct qed_iscsi_conn *p_conn)
792 {
793 spin_lock_bh(&p_hwfn->p_iscsi_info->lock);
794 list_add_tail(&p_conn->list_entry, &p_hwfn->p_iscsi_info->free_list);
795 qed_cxt_release_cid(p_hwfn, p_conn->icid);
796 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock);
797 }
798
799 void qed_iscsi_free_connection(struct qed_hwfn *p_hwfn,
800 struct qed_iscsi_conn *p_conn)
801 {
802 qed_chain_free(p_hwfn->cdev, &p_conn->xhq);
803 qed_chain_free(p_hwfn->cdev, &p_conn->uhq);
804 qed_chain_free(p_hwfn->cdev, &p_conn->r2tq);
805 dma_free_coherent(&p_hwfn->cdev->pdev->dev,
806 sizeof(struct tcp_upload_params),
807 p_conn->tcp_upload_params_virt_addr,
808 p_conn->tcp_upload_params_phys_addr);
809 dma_free_coherent(&p_hwfn->cdev->pdev->dev,
810 sizeof(struct scsi_terminate_extra_params),
811 p_conn->queue_cnts_virt_addr,
812 p_conn->queue_cnts_phys_addr);
813 kfree(p_conn);
814 }
815
816 struct qed_iscsi_info *qed_iscsi_alloc(struct qed_hwfn *p_hwfn)
817 {
818 struct qed_iscsi_info *p_iscsi_info;
819
820 p_iscsi_info = kzalloc(sizeof(*p_iscsi_info), GFP_KERNEL);
821 if (!p_iscsi_info)
822 return NULL;
823
824 INIT_LIST_HEAD(&p_iscsi_info->free_list);
825 return p_iscsi_info;
826 }
827
828 void qed_iscsi_setup(struct qed_hwfn *p_hwfn,
829 struct qed_iscsi_info *p_iscsi_info)
830 {
831 spin_lock_init(&p_iscsi_info->lock);
832 }
833
834 void qed_iscsi_free(struct qed_hwfn *p_hwfn,
835 struct qed_iscsi_info *p_iscsi_info)
836 {
837 struct qed_iscsi_conn *p_conn = NULL;
838
839 while (!list_empty(&p_hwfn->p_iscsi_info->free_list)) {
840 p_conn = list_first_entry(&p_hwfn->p_iscsi_info->free_list,
841 struct qed_iscsi_conn, list_entry);
842 if (p_conn) {
843 list_del(&p_conn->list_entry);
844 qed_iscsi_free_connection(p_hwfn, p_conn);
845 }
846 }
847
848 kfree(p_iscsi_info);
849 }
850
851 static void _qed_iscsi_get_tstats(struct qed_hwfn *p_hwfn,
852 struct qed_ptt *p_ptt,
853 struct qed_iscsi_stats *p_stats)
854 {
855 struct tstorm_iscsi_stats_drv tstats;
856 u32 tstats_addr;
857
858 memset(&tstats, 0, sizeof(tstats));
859 tstats_addr = BAR0_MAP_REG_TSDM_RAM +
860 TSTORM_ISCSI_RX_STATS_OFFSET(p_hwfn->rel_pf_id);
861 qed_memcpy_from(p_hwfn, p_ptt, &tstats, tstats_addr, sizeof(tstats));
862
863 p_stats->iscsi_rx_bytes_cnt =
864 HILO_64_REGPAIR(tstats.iscsi_rx_bytes_cnt);
865 p_stats->iscsi_rx_packet_cnt =
866 HILO_64_REGPAIR(tstats.iscsi_rx_packet_cnt);
867 p_stats->iscsi_cmdq_threshold_cnt =
868 le32_to_cpu(tstats.iscsi_cmdq_threshold_cnt);
869 p_stats->iscsi_rq_threshold_cnt =
870 le32_to_cpu(tstats.iscsi_rq_threshold_cnt);
871 p_stats->iscsi_immq_threshold_cnt =
872 le32_to_cpu(tstats.iscsi_immq_threshold_cnt);
873 }
874
875 static void _qed_iscsi_get_mstats(struct qed_hwfn *p_hwfn,
876 struct qed_ptt *p_ptt,
877 struct qed_iscsi_stats *p_stats)
878 {
879 struct mstorm_iscsi_stats_drv mstats;
880 u32 mstats_addr;
881
882 memset(&mstats, 0, sizeof(mstats));
883 mstats_addr = BAR0_MAP_REG_MSDM_RAM +
884 MSTORM_ISCSI_RX_STATS_OFFSET(p_hwfn->rel_pf_id);
885 qed_memcpy_from(p_hwfn, p_ptt, &mstats, mstats_addr, sizeof(mstats));
886
887 p_stats->iscsi_rx_dropped_pdus_task_not_valid =
888 HILO_64_REGPAIR(mstats.iscsi_rx_dropped_pdus_task_not_valid);
889 }
890
891 static void _qed_iscsi_get_ustats(struct qed_hwfn *p_hwfn,
892 struct qed_ptt *p_ptt,
893 struct qed_iscsi_stats *p_stats)
894 {
895 struct ustorm_iscsi_stats_drv ustats;
896 u32 ustats_addr;
897
898 memset(&ustats, 0, sizeof(ustats));
899 ustats_addr = BAR0_MAP_REG_USDM_RAM +
900 USTORM_ISCSI_RX_STATS_OFFSET(p_hwfn->rel_pf_id);
901 qed_memcpy_from(p_hwfn, p_ptt, &ustats, ustats_addr, sizeof(ustats));
902
903 p_stats->iscsi_rx_data_pdu_cnt =
904 HILO_64_REGPAIR(ustats.iscsi_rx_data_pdu_cnt);
905 p_stats->iscsi_rx_r2t_pdu_cnt =
906 HILO_64_REGPAIR(ustats.iscsi_rx_r2t_pdu_cnt);
907 p_stats->iscsi_rx_total_pdu_cnt =
908 HILO_64_REGPAIR(ustats.iscsi_rx_total_pdu_cnt);
909 }
910
911 static void _qed_iscsi_get_xstats(struct qed_hwfn *p_hwfn,
912 struct qed_ptt *p_ptt,
913 struct qed_iscsi_stats *p_stats)
914 {
915 struct xstorm_iscsi_stats_drv xstats;
916 u32 xstats_addr;
917
918 memset(&xstats, 0, sizeof(xstats));
919 xstats_addr = BAR0_MAP_REG_XSDM_RAM +
920 XSTORM_ISCSI_TX_STATS_OFFSET(p_hwfn->rel_pf_id);
921 qed_memcpy_from(p_hwfn, p_ptt, &xstats, xstats_addr, sizeof(xstats));
922
923 p_stats->iscsi_tx_go_to_slow_start_event_cnt =
924 HILO_64_REGPAIR(xstats.iscsi_tx_go_to_slow_start_event_cnt);
925 p_stats->iscsi_tx_fast_retransmit_event_cnt =
926 HILO_64_REGPAIR(xstats.iscsi_tx_fast_retransmit_event_cnt);
927 }
928
929 static void _qed_iscsi_get_ystats(struct qed_hwfn *p_hwfn,
930 struct qed_ptt *p_ptt,
931 struct qed_iscsi_stats *p_stats)
932 {
933 struct ystorm_iscsi_stats_drv ystats;
934 u32 ystats_addr;
935
936 memset(&ystats, 0, sizeof(ystats));
937 ystats_addr = BAR0_MAP_REG_YSDM_RAM +
938 YSTORM_ISCSI_TX_STATS_OFFSET(p_hwfn->rel_pf_id);
939 qed_memcpy_from(p_hwfn, p_ptt, &ystats, ystats_addr, sizeof(ystats));
940
941 p_stats->iscsi_tx_data_pdu_cnt =
942 HILO_64_REGPAIR(ystats.iscsi_tx_data_pdu_cnt);
943 p_stats->iscsi_tx_r2t_pdu_cnt =
944 HILO_64_REGPAIR(ystats.iscsi_tx_r2t_pdu_cnt);
945 p_stats->iscsi_tx_total_pdu_cnt =
946 HILO_64_REGPAIR(ystats.iscsi_tx_total_pdu_cnt);
947 }
948
949 static void _qed_iscsi_get_pstats(struct qed_hwfn *p_hwfn,
950 struct qed_ptt *p_ptt,
951 struct qed_iscsi_stats *p_stats)
952 {
953 struct pstorm_iscsi_stats_drv pstats;
954 u32 pstats_addr;
955
956 memset(&pstats, 0, sizeof(pstats));
957 pstats_addr = BAR0_MAP_REG_PSDM_RAM +
958 PSTORM_ISCSI_TX_STATS_OFFSET(p_hwfn->rel_pf_id);
959 qed_memcpy_from(p_hwfn, p_ptt, &pstats, pstats_addr, sizeof(pstats));
960
961 p_stats->iscsi_tx_bytes_cnt =
962 HILO_64_REGPAIR(pstats.iscsi_tx_bytes_cnt);
963 p_stats->iscsi_tx_packet_cnt =
964 HILO_64_REGPAIR(pstats.iscsi_tx_packet_cnt);
965 }
966
967 static int qed_iscsi_get_stats(struct qed_hwfn *p_hwfn,
968 struct qed_iscsi_stats *stats)
969 {
970 struct qed_ptt *p_ptt;
971
972 memset(stats, 0, sizeof(*stats));
973
974 p_ptt = qed_ptt_acquire(p_hwfn);
975 if (!p_ptt) {
976 DP_ERR(p_hwfn, "Failed to acquire ptt\n");
977 return -EAGAIN;
978 }
979
980 _qed_iscsi_get_tstats(p_hwfn, p_ptt, stats);
981 _qed_iscsi_get_mstats(p_hwfn, p_ptt, stats);
982 _qed_iscsi_get_ustats(p_hwfn, p_ptt, stats);
983
984 _qed_iscsi_get_xstats(p_hwfn, p_ptt, stats);
985 _qed_iscsi_get_ystats(p_hwfn, p_ptt, stats);
986 _qed_iscsi_get_pstats(p_hwfn, p_ptt, stats);
987
988 qed_ptt_release(p_hwfn, p_ptt);
989
990 return 0;
991 }
992
993 struct qed_hash_iscsi_con {
994 struct hlist_node node;
995 struct qed_iscsi_conn *con;
996 };
997
998 static int qed_fill_iscsi_dev_info(struct qed_dev *cdev,
999 struct qed_dev_iscsi_info *info)
1000 {
1001 struct qed_hwfn *hwfn = QED_LEADING_HWFN(cdev);
1002
1003 int rc;
1004
1005 memset(info, 0, sizeof(*info));
1006 rc = qed_fill_dev_info(cdev, &info->common);
1007
1008 info->primary_dbq_rq_addr =
1009 qed_iscsi_get_primary_bdq_prod(hwfn, BDQ_ID_RQ);
1010 info->secondary_bdq_rq_addr =
1011 qed_iscsi_get_secondary_bdq_prod(hwfn, BDQ_ID_RQ);
1012
1013 return rc;
1014 }
1015
1016 static void qed_register_iscsi_ops(struct qed_dev *cdev,
1017 struct qed_iscsi_cb_ops *ops, void *cookie)
1018 {
1019 cdev->protocol_ops.iscsi = ops;
1020 cdev->ops_cookie = cookie;
1021 }
1022
1023 static struct qed_hash_iscsi_con *qed_iscsi_get_hash(struct qed_dev *cdev,
1024 u32 handle)
1025 {
1026 struct qed_hash_iscsi_con *hash_con = NULL;
1027
1028 if (!(cdev->flags & QED_FLAG_STORAGE_STARTED))
1029 return NULL;
1030
1031 hash_for_each_possible(cdev->connections, hash_con, node, handle) {
1032 if (hash_con->con->icid == handle)
1033 break;
1034 }
1035
1036 if (!hash_con || (hash_con->con->icid != handle))
1037 return NULL;
1038
1039 return hash_con;
1040 }
1041
1042 static int qed_iscsi_stop(struct qed_dev *cdev)
1043 {
1044 int rc;
1045
1046 if (!(cdev->flags & QED_FLAG_STORAGE_STARTED)) {
1047 DP_NOTICE(cdev, "iscsi already stopped\n");
1048 return 0;
1049 }
1050
1051 if (!hash_empty(cdev->connections)) {
1052 DP_NOTICE(cdev,
1053 "Can't stop iscsi - not all connections were returned\n");
1054 return -EINVAL;
1055 }
1056
1057 /* Stop the iscsi */
1058 rc = qed_sp_iscsi_func_stop(QED_LEADING_HWFN(cdev),
1059 QED_SPQ_MODE_EBLOCK, NULL);
1060 cdev->flags &= ~QED_FLAG_STORAGE_STARTED;
1061
1062 return rc;
1063 }
1064
1065 static int qed_iscsi_start(struct qed_dev *cdev,
1066 struct qed_iscsi_tid *tasks,
1067 void *event_context,
1068 iscsi_event_cb_t async_event_cb)
1069 {
1070 int rc;
1071 struct qed_tid_mem *tid_info;
1072
1073 if (cdev->flags & QED_FLAG_STORAGE_STARTED) {
1074 DP_NOTICE(cdev, "iscsi already started;\n");
1075 return 0;
1076 }
1077
1078 rc = qed_sp_iscsi_func_start(QED_LEADING_HWFN(cdev),
1079 QED_SPQ_MODE_EBLOCK, NULL, event_context,
1080 async_event_cb);
1081 if (rc) {
1082 DP_NOTICE(cdev, "Failed to start iscsi\n");
1083 return rc;
1084 }
1085
1086 cdev->flags |= QED_FLAG_STORAGE_STARTED;
1087 hash_init(cdev->connections);
1088
1089 if (!tasks)
1090 return 0;
1091
1092 tid_info = kzalloc(sizeof(*tid_info), GFP_KERNEL);
1093
1094 if (!tid_info) {
1095 qed_iscsi_stop(cdev);
1096 return -ENOMEM;
1097 }
1098
1099 rc = qed_cxt_get_tid_mem_info(QED_LEADING_HWFN(cdev),
1100 tid_info);
1101 if (rc) {
1102 DP_NOTICE(cdev, "Failed to gather task information\n");
1103 qed_iscsi_stop(cdev);
1104 kfree(tid_info);
1105 return rc;
1106 }
1107
1108 /* Fill task information */
1109 tasks->size = tid_info->tid_size;
1110 tasks->num_tids_per_block = tid_info->num_tids_per_block;
1111 memcpy(tasks->blocks, tid_info->blocks,
1112 MAX_TID_BLOCKS_ISCSI * sizeof(u8 *));
1113
1114 kfree(tid_info);
1115
1116 return 0;
1117 }
1118
1119 static int qed_iscsi_acquire_conn(struct qed_dev *cdev,
1120 u32 *handle,
1121 u32 *fw_cid, void __iomem **p_doorbell)
1122 {
1123 struct qed_hash_iscsi_con *hash_con;
1124 int rc;
1125
1126 /* Allocate a hashed connection */
1127 hash_con = kzalloc(sizeof(*hash_con), GFP_ATOMIC);
1128 if (!hash_con)
1129 return -ENOMEM;
1130
1131 /* Acquire the connection */
1132 rc = qed_iscsi_acquire_connection(QED_LEADING_HWFN(cdev), NULL,
1133 &hash_con->con);
1134 if (rc) {
1135 DP_NOTICE(cdev, "Failed to acquire Connection\n");
1136 kfree(hash_con);
1137 return rc;
1138 }
1139
1140 /* Added the connection to hash table */
1141 *handle = hash_con->con->icid;
1142 *fw_cid = hash_con->con->fw_cid;
1143 hash_add(cdev->connections, &hash_con->node, *handle);
1144
1145 if (p_doorbell)
1146 *p_doorbell = qed_iscsi_get_db_addr(QED_LEADING_HWFN(cdev),
1147 *handle);
1148
1149 return 0;
1150 }
1151
1152 static int qed_iscsi_release_conn(struct qed_dev *cdev, u32 handle)
1153 {
1154 struct qed_hash_iscsi_con *hash_con;
1155
1156 hash_con = qed_iscsi_get_hash(cdev, handle);
1157 if (!hash_con) {
1158 DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
1159 handle);
1160 return -EINVAL;
1161 }
1162
1163 hlist_del(&hash_con->node);
1164 qed_iscsi_release_connection(QED_LEADING_HWFN(cdev), hash_con->con);
1165 kfree(hash_con);
1166
1167 return 0;
1168 }
1169
1170 static int qed_iscsi_offload_conn(struct qed_dev *cdev,
1171 u32 handle,
1172 struct qed_iscsi_params_offload *conn_info)
1173 {
1174 struct qed_hash_iscsi_con *hash_con;
1175 struct qed_iscsi_conn *con;
1176
1177 hash_con = qed_iscsi_get_hash(cdev, handle);
1178 if (!hash_con) {
1179 DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
1180 handle);
1181 return -EINVAL;
1182 }
1183
1184 /* Update the connection with information from the params */
1185 con = hash_con->con;
1186
1187 ether_addr_copy(con->local_mac, conn_info->src.mac);
1188 ether_addr_copy(con->remote_mac, conn_info->dst.mac);
1189 memcpy(con->local_ip, conn_info->src.ip, sizeof(con->local_ip));
1190 memcpy(con->remote_ip, conn_info->dst.ip, sizeof(con->remote_ip));
1191 con->local_port = conn_info->src.port;
1192 con->remote_port = conn_info->dst.port;
1193
1194 con->layer_code = conn_info->layer_code;
1195 con->sq_pbl_addr = conn_info->sq_pbl_addr;
1196 con->initial_ack = conn_info->initial_ack;
1197 con->vlan_id = conn_info->vlan_id;
1198 con->tcp_flags = conn_info->tcp_flags;
1199 con->ip_version = conn_info->ip_version;
1200 con->default_cq = conn_info->default_cq;
1201 con->ka_max_probe_cnt = conn_info->ka_max_probe_cnt;
1202 con->dup_ack_theshold = conn_info->dup_ack_theshold;
1203 con->rcv_next = conn_info->rcv_next;
1204 con->snd_una = conn_info->snd_una;
1205 con->snd_next = conn_info->snd_next;
1206 con->snd_max = conn_info->snd_max;
1207 con->snd_wnd = conn_info->snd_wnd;
1208 con->rcv_wnd = conn_info->rcv_wnd;
1209 con->snd_wl1 = conn_info->snd_wl1;
1210 con->cwnd = conn_info->cwnd;
1211 con->ss_thresh = conn_info->ss_thresh;
1212 con->srtt = conn_info->srtt;
1213 con->rtt_var = conn_info->rtt_var;
1214 con->ts_time = conn_info->ts_time;
1215 con->ts_recent = conn_info->ts_recent;
1216 con->ts_recent_age = conn_info->ts_recent_age;
1217 con->total_rt = conn_info->total_rt;
1218 con->ka_timeout_delta = conn_info->ka_timeout_delta;
1219 con->rt_timeout_delta = conn_info->rt_timeout_delta;
1220 con->dup_ack_cnt = conn_info->dup_ack_cnt;
1221 con->snd_wnd_probe_cnt = conn_info->snd_wnd_probe_cnt;
1222 con->ka_probe_cnt = conn_info->ka_probe_cnt;
1223 con->rt_cnt = conn_info->rt_cnt;
1224 con->flow_label = conn_info->flow_label;
1225 con->ka_timeout = conn_info->ka_timeout;
1226 con->ka_interval = conn_info->ka_interval;
1227 con->max_rt_time = conn_info->max_rt_time;
1228 con->initial_rcv_wnd = conn_info->initial_rcv_wnd;
1229 con->ttl = conn_info->ttl;
1230 con->tos_or_tc = conn_info->tos_or_tc;
1231 con->remote_port = conn_info->remote_port;
1232 con->local_port = conn_info->local_port;
1233 con->mss = conn_info->mss;
1234 con->snd_wnd_scale = conn_info->snd_wnd_scale;
1235 con->rcv_wnd_scale = conn_info->rcv_wnd_scale;
1236 con->ts_ticks_per_second = conn_info->ts_ticks_per_second;
1237 con->da_timeout_value = conn_info->da_timeout_value;
1238 con->ack_frequency = conn_info->ack_frequency;
1239
1240 /* Set default values on other connection fields */
1241 con->offl_flags = 0x1;
1242
1243 return qed_sp_iscsi_conn_offload(QED_LEADING_HWFN(cdev), con,
1244 QED_SPQ_MODE_EBLOCK, NULL);
1245 }
1246
1247 static int qed_iscsi_update_conn(struct qed_dev *cdev,
1248 u32 handle,
1249 struct qed_iscsi_params_update *conn_info)
1250 {
1251 struct qed_hash_iscsi_con *hash_con;
1252 struct qed_iscsi_conn *con;
1253
1254 hash_con = qed_iscsi_get_hash(cdev, handle);
1255 if (!hash_con) {
1256 DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
1257 handle);
1258 return -EINVAL;
1259 }
1260
1261 /* Update the connection with information from the params */
1262 con = hash_con->con;
1263 con->update_flag = conn_info->update_flag;
1264 con->max_seq_size = conn_info->max_seq_size;
1265 con->max_recv_pdu_length = conn_info->max_recv_pdu_length;
1266 con->max_send_pdu_length = conn_info->max_send_pdu_length;
1267 con->first_seq_length = conn_info->first_seq_length;
1268 con->exp_stat_sn = conn_info->exp_stat_sn;
1269
1270 return qed_sp_iscsi_conn_update(QED_LEADING_HWFN(cdev), con,
1271 QED_SPQ_MODE_EBLOCK, NULL);
1272 }
1273
1274 static int qed_iscsi_clear_conn_sq(struct qed_dev *cdev, u32 handle)
1275 {
1276 struct qed_hash_iscsi_con *hash_con;
1277
1278 hash_con = qed_iscsi_get_hash(cdev, handle);
1279 if (!hash_con) {
1280 DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
1281 handle);
1282 return -EINVAL;
1283 }
1284
1285 return qed_sp_iscsi_conn_clear_sq(QED_LEADING_HWFN(cdev),
1286 hash_con->con,
1287 QED_SPQ_MODE_EBLOCK, NULL);
1288 }
1289
1290 static int qed_iscsi_destroy_conn(struct qed_dev *cdev,
1291 u32 handle, u8 abrt_conn)
1292 {
1293 struct qed_hash_iscsi_con *hash_con;
1294
1295 hash_con = qed_iscsi_get_hash(cdev, handle);
1296 if (!hash_con) {
1297 DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
1298 handle);
1299 return -EINVAL;
1300 }
1301
1302 hash_con->con->abortive_dsconnect = abrt_conn;
1303
1304 return qed_sp_iscsi_conn_terminate(QED_LEADING_HWFN(cdev),
1305 hash_con->con,
1306 QED_SPQ_MODE_EBLOCK, NULL);
1307 }
1308
1309 static int qed_iscsi_stats(struct qed_dev *cdev, struct qed_iscsi_stats *stats)
1310 {
1311 return qed_iscsi_get_stats(QED_LEADING_HWFN(cdev), stats);
1312 }
1313
1314 static const struct qed_iscsi_ops qed_iscsi_ops_pass = {
1315 .common = &qed_common_ops_pass,
1316 .ll2 = &qed_ll2_ops_pass,
1317 .fill_dev_info = &qed_fill_iscsi_dev_info,
1318 .register_ops = &qed_register_iscsi_ops,
1319 .start = &qed_iscsi_start,
1320 .stop = &qed_iscsi_stop,
1321 .acquire_conn = &qed_iscsi_acquire_conn,
1322 .release_conn = &qed_iscsi_release_conn,
1323 .offload_conn = &qed_iscsi_offload_conn,
1324 .update_conn = &qed_iscsi_update_conn,
1325 .destroy_conn = &qed_iscsi_destroy_conn,
1326 .clear_sq = &qed_iscsi_clear_conn_sq,
1327 .get_stats = &qed_iscsi_stats,
1328 };
1329
1330 const struct qed_iscsi_ops *qed_get_iscsi_ops(void)
1331 {
1332 return &qed_iscsi_ops_pass;
1333 }
1334 EXPORT_SYMBOL(qed_get_iscsi_ops);
1335
1336 void qed_put_iscsi_ops(void)
1337 {
1338 }
1339 EXPORT_SYMBOL(qed_put_iscsi_ops);
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