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WIP FPC-III support
[linux/fpc-iii.git] / drivers / net / ethernet / qlogic / qed / qed_iscsi.c
blob4eae4ee3538f478a2e62f5d2db9e386e1a8d645b
1 // SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
2 /* QLogic qed NIC Driver
3 * Copyright (c) 2015-2017 QLogic Corporation
4 * Copyright (c) 2019-2020 Marvell International Ltd.
5 */
6
7 #include <linux/types.h>
8 #include <asm/byteorder.h>
9 #include <asm/param.h>
10 #include <linux/delay.h>
11 #include <linux/dma-mapping.h>
12 #include <linux/etherdevice.h>
13 #include <linux/interrupt.h>
14 #include <linux/kernel.h>
15 #include <linux/log2.h>
16 #include <linux/module.h>
17 #include <linux/pci.h>
18 #include <linux/slab.h>
19 #include <linux/stddef.h>
20 #include <linux/string.h>
21 #include <linux/workqueue.h>
22 #include <linux/errno.h>
23 #include <linux/list.h>
24 #include <linux/spinlock.h>
25 #include <linux/qed/qed_iscsi_if.h>
26 #include "qed.h"
27 #include "qed_cxt.h"
28 #include "qed_dev_api.h"
29 #include "qed_hsi.h"
30 #include "qed_hw.h"
31 #include "qed_int.h"
32 #include "qed_iscsi.h"
33 #include "qed_ll2.h"
34 #include "qed_mcp.h"
35 #include "qed_sp.h"
36 #include "qed_sriov.h"
37 #include "qed_reg_addr.h"
38
39 struct qed_iscsi_conn {
40 struct list_head list_entry;
41 bool free_on_delete;
42
43 u16 conn_id;
44 u32 icid;
45 u32 fw_cid;
46
47 u8 layer_code;
48 u8 offl_flags;
49 u8 connect_mode;
50 u32 initial_ack;
51 dma_addr_t sq_pbl_addr;
52 struct qed_chain r2tq;
53 struct qed_chain xhq;
54 struct qed_chain uhq;
55
56 struct tcp_upload_params *tcp_upload_params_virt_addr;
57 dma_addr_t tcp_upload_params_phys_addr;
58 struct scsi_terminate_extra_params *queue_cnts_virt_addr;
59 dma_addr_t queue_cnts_phys_addr;
60 dma_addr_t syn_phy_addr;
61
62 u16 syn_ip_payload_length;
63 u8 local_mac[6];
64 u8 remote_mac[6];
65 u16 vlan_id;
66 u16 tcp_flags;
67 u8 ip_version;
68 u32 remote_ip[4];
69 u32 local_ip[4];
70 u8 ka_max_probe_cnt;
71 u8 dup_ack_theshold;
72 u32 rcv_next;
73 u32 snd_una;
74 u32 snd_next;
75 u32 snd_max;
76 u32 snd_wnd;
77 u32 rcv_wnd;
78 u32 snd_wl1;
79 u32 cwnd;
80 u32 ss_thresh;
81 u16 srtt;
82 u16 rtt_var;
83 u32 ts_recent;
84 u32 ts_recent_age;
85 u32 total_rt;
86 u32 ka_timeout_delta;
87 u32 rt_timeout_delta;
88 u8 dup_ack_cnt;
89 u8 snd_wnd_probe_cnt;
90 u8 ka_probe_cnt;
91 u8 rt_cnt;
92 u32 flow_label;
93 u32 ka_timeout;
94 u32 ka_interval;
95 u32 max_rt_time;
96 u32 initial_rcv_wnd;
97 u8 ttl;
98 u8 tos_or_tc;
99 u16 remote_port;
100 u16 local_port;
101 u16 mss;
102 u8 snd_wnd_scale;
103 u8 rcv_wnd_scale;
104 u16 da_timeout_value;
105 u8 ack_frequency;
106
107 u8 update_flag;
108 u8 default_cq;
109 u32 max_seq_size;
110 u32 max_recv_pdu_length;
111 u32 max_send_pdu_length;
112 u32 first_seq_length;
113 u32 exp_stat_sn;
114 u32 stat_sn;
115 u16 physical_q0;
116 u16 physical_q1;
117 u8 abortive_dsconnect;
118 };
119
120 static int qed_iscsi_async_event(struct qed_hwfn *p_hwfn, u8 fw_event_code,
121 __le16 echo, union event_ring_data *data,
122 u8 fw_return_code)
123 {
124 if (p_hwfn->p_iscsi_info->event_cb) {
125 struct qed_iscsi_info *p_iscsi = p_hwfn->p_iscsi_info;
126
127 return p_iscsi->event_cb(p_iscsi->event_context,
128 fw_event_code, data);
129 } else {
130 DP_NOTICE(p_hwfn, "iSCSI async completion is not set\n");
131 return -EINVAL;
132 }
133 }
134
135 static int
136 qed_sp_iscsi_func_start(struct qed_hwfn *p_hwfn,
137 enum spq_mode comp_mode,
138 struct qed_spq_comp_cb *p_comp_addr,
139 void *event_context, iscsi_event_cb_t async_event_cb)
140 {
141 struct iscsi_init_ramrod_params *p_ramrod = NULL;
142 struct scsi_init_func_queues *p_queue = NULL;
143 struct qed_iscsi_pf_params *p_params = NULL;
144 struct iscsi_spe_func_init *p_init = NULL;
145 struct qed_spq_entry *p_ent = NULL;
146 struct qed_sp_init_data init_data;
147 int rc = 0;
148 u32 dval;
149 u16 val;
150 u8 i;
151
152 /* Get SPQ entry */
153 memset(&init_data, 0, sizeof(init_data));
154 init_data.cid = qed_spq_get_cid(p_hwfn);
155 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
156 init_data.comp_mode = comp_mode;
157 init_data.p_comp_data = p_comp_addr;
158
159 rc = qed_sp_init_request(p_hwfn, &p_ent,
160 ISCSI_RAMROD_CMD_ID_INIT_FUNC,
161 PROTOCOLID_ISCSI, &init_data);
162 if (rc)
163 return rc;
164
165 p_ramrod = &p_ent->ramrod.iscsi_init;
166 p_init = &p_ramrod->iscsi_init_spe;
167 p_params = &p_hwfn->pf_params.iscsi_pf_params;
168 p_queue = &p_init->q_params;
169
170 /* Sanity */
171 if (p_params->num_queues > p_hwfn->hw_info.feat_num[QED_ISCSI_CQ]) {
172 DP_ERR(p_hwfn,
173 "Cannot satisfy CQ amount. Queues requested %d, CQs available %d. Aborting function start\n",
174 p_params->num_queues,
175 p_hwfn->hw_info.feat_num[QED_ISCSI_CQ]);
176 qed_sp_destroy_request(p_hwfn, p_ent);
177 return -EINVAL;
178 }
179
180 val = p_params->half_way_close_timeout;
181 p_init->half_way_close_timeout = cpu_to_le16(val);
182 p_init->num_sq_pages_in_ring = p_params->num_sq_pages_in_ring;
183 p_init->num_r2tq_pages_in_ring = p_params->num_r2tq_pages_in_ring;
184 p_init->num_uhq_pages_in_ring = p_params->num_uhq_pages_in_ring;
185 p_init->ll2_rx_queue_id =
186 p_hwfn->hw_info.resc_start[QED_LL2_RAM_QUEUE] +
187 p_params->ll2_ooo_queue_id;
188
189 p_init->func_params.log_page_size = p_params->log_page_size;
190 val = p_params->num_tasks;
191 p_init->func_params.num_tasks = cpu_to_le16(val);
192 p_init->debug_mode.flags = p_params->debug_mode;
193
194 DMA_REGPAIR_LE(p_queue->glbl_q_params_addr,
195 p_params->glbl_q_params_addr);
196
197 val = p_params->cq_num_entries;
198 p_queue->cq_num_entries = cpu_to_le16(val);
199 val = p_params->cmdq_num_entries;
200 p_queue->cmdq_num_entries = cpu_to_le16(val);
201 p_queue->num_queues = p_params->num_queues;
202 dval = (u8)p_hwfn->hw_info.resc_start[QED_CMDQS_CQS];
203 p_queue->queue_relative_offset = (u8)dval;
204 p_queue->cq_sb_pi = p_params->gl_rq_pi;
205 p_queue->cmdq_sb_pi = p_params->gl_cmd_pi;
206
207 for (i = 0; i < p_params->num_queues; i++) {
208 val = qed_get_igu_sb_id(p_hwfn, i);
209 p_queue->cq_cmdq_sb_num_arr[i] = cpu_to_le16(val);
210 }
211
212 p_queue->bdq_resource_id = (u8)RESC_START(p_hwfn, QED_BDQ);
213
214 DMA_REGPAIR_LE(p_queue->bdq_pbl_base_address[BDQ_ID_RQ],
215 p_params->bdq_pbl_base_addr[BDQ_ID_RQ]);
216 p_queue->bdq_pbl_num_entries[BDQ_ID_RQ] =
217 p_params->bdq_pbl_num_entries[BDQ_ID_RQ];
218 val = p_params->bdq_xoff_threshold[BDQ_ID_RQ];
219 p_queue->bdq_xoff_threshold[BDQ_ID_RQ] = cpu_to_le16(val);
220 val = p_params->bdq_xon_threshold[BDQ_ID_RQ];
221 p_queue->bdq_xon_threshold[BDQ_ID_RQ] = cpu_to_le16(val);
222
223 DMA_REGPAIR_LE(p_queue->bdq_pbl_base_address[BDQ_ID_IMM_DATA],
224 p_params->bdq_pbl_base_addr[BDQ_ID_IMM_DATA]);
225 p_queue->bdq_pbl_num_entries[BDQ_ID_IMM_DATA] =
226 p_params->bdq_pbl_num_entries[BDQ_ID_IMM_DATA];
227 val = p_params->bdq_xoff_threshold[BDQ_ID_IMM_DATA];
228 p_queue->bdq_xoff_threshold[BDQ_ID_IMM_DATA] = cpu_to_le16(val);
229 val = p_params->bdq_xon_threshold[BDQ_ID_IMM_DATA];
230 p_queue->bdq_xon_threshold[BDQ_ID_IMM_DATA] = cpu_to_le16(val);
231 val = p_params->rq_buffer_size;
232 p_queue->rq_buffer_size = cpu_to_le16(val);
233 if (p_params->is_target) {
234 SET_FIELD(p_queue->q_validity,
235 SCSI_INIT_FUNC_QUEUES_RQ_VALID, 1);
236 if (p_queue->bdq_pbl_num_entries[BDQ_ID_IMM_DATA])
237 SET_FIELD(p_queue->q_validity,
238 SCSI_INIT_FUNC_QUEUES_IMM_DATA_VALID, 1);
239 SET_FIELD(p_queue->q_validity,
240 SCSI_INIT_FUNC_QUEUES_CMD_VALID, 1);
241 } else {
242 SET_FIELD(p_queue->q_validity,
243 SCSI_INIT_FUNC_QUEUES_RQ_VALID, 1);
244 }
245 p_ramrod->tcp_init.two_msl_timer = cpu_to_le32(p_params->two_msl_timer);
246 val = p_params->tx_sws_timer;
247 p_ramrod->tcp_init.tx_sws_timer = cpu_to_le16(val);
248 p_ramrod->tcp_init.max_fin_rt = p_params->max_fin_rt;
249
250 p_hwfn->p_iscsi_info->event_context = event_context;
251 p_hwfn->p_iscsi_info->event_cb = async_event_cb;
252
253 qed_spq_register_async_cb(p_hwfn, PROTOCOLID_ISCSI,
254 qed_iscsi_async_event);
255
256 return qed_spq_post(p_hwfn, p_ent, NULL);
257 }
258
259 static int qed_sp_iscsi_conn_offload(struct qed_hwfn *p_hwfn,
260 struct qed_iscsi_conn *p_conn,
261 enum spq_mode comp_mode,
262 struct qed_spq_comp_cb *p_comp_addr)
263 {
264 struct iscsi_spe_conn_offload *p_ramrod = NULL;
265 struct tcp_offload_params_opt2 *p_tcp2 = NULL;
266 struct tcp_offload_params *p_tcp = NULL;
267 struct qed_spq_entry *p_ent = NULL;
268 struct qed_sp_init_data init_data;
269 dma_addr_t r2tq_pbl_addr;
270 dma_addr_t xhq_pbl_addr;
271 dma_addr_t uhq_pbl_addr;
272 u16 physical_q;
273 __le16 tmp;
274 int rc = 0;
275 u32 dval;
276 u16 wval;
277 u16 *p;
278 u8 i;
279
280 /* Get SPQ entry */
281 memset(&init_data, 0, sizeof(init_data));
282 init_data.cid = p_conn->icid;
283 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
284 init_data.comp_mode = comp_mode;
285 init_data.p_comp_data = p_comp_addr;
286
287 rc = qed_sp_init_request(p_hwfn, &p_ent,
288 ISCSI_RAMROD_CMD_ID_OFFLOAD_CONN,
289 PROTOCOLID_ISCSI, &init_data);
290 if (rc)
291 return rc;
292
293 p_ramrod = &p_ent->ramrod.iscsi_conn_offload;
294
295 /* Transmission PQ is the first of the PF */
296 physical_q = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_OFLD);
297 p_conn->physical_q0 = physical_q;
298 p_ramrod->iscsi.physical_q0 = cpu_to_le16(physical_q);
299
300 /* iSCSI Pure-ACK PQ */
301 physical_q = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_ACK);
302 p_conn->physical_q1 = physical_q;
303 p_ramrod->iscsi.physical_q1 = cpu_to_le16(physical_q);
304
305 p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id);
306
307 DMA_REGPAIR_LE(p_ramrod->iscsi.sq_pbl_addr, p_conn->sq_pbl_addr);
308
309 r2tq_pbl_addr = qed_chain_get_pbl_phys(&p_conn->r2tq);
310 DMA_REGPAIR_LE(p_ramrod->iscsi.r2tq_pbl_addr, r2tq_pbl_addr);
311
312 xhq_pbl_addr = qed_chain_get_pbl_phys(&p_conn->xhq);
313 DMA_REGPAIR_LE(p_ramrod->iscsi.xhq_pbl_addr, xhq_pbl_addr);
314
315 uhq_pbl_addr = qed_chain_get_pbl_phys(&p_conn->uhq);
316 DMA_REGPAIR_LE(p_ramrod->iscsi.uhq_pbl_addr, uhq_pbl_addr);
317
318 p_ramrod->iscsi.initial_ack = cpu_to_le32(p_conn->initial_ack);
319 p_ramrod->iscsi.flags = p_conn->offl_flags;
320 p_ramrod->iscsi.default_cq = p_conn->default_cq;
321 p_ramrod->iscsi.stat_sn = cpu_to_le32(p_conn->stat_sn);
322
323 if (!GET_FIELD(p_ramrod->iscsi.flags,
324 ISCSI_CONN_OFFLOAD_PARAMS_TCP_ON_CHIP_1B)) {
325 p_tcp = &p_ramrod->tcp;
326
327 p = (u16 *)p_conn->local_mac;
328 tmp = cpu_to_le16(get_unaligned_be16(p));
329 p_tcp->local_mac_addr_hi = tmp;
330 tmp = cpu_to_le16(get_unaligned_be16(p + 1));
331 p_tcp->local_mac_addr_mid = tmp;
332 tmp = cpu_to_le16(get_unaligned_be16(p + 2));
333 p_tcp->local_mac_addr_lo = tmp;
334
335 p = (u16 *)p_conn->remote_mac;
336 tmp = cpu_to_le16(get_unaligned_be16(p));
337 p_tcp->remote_mac_addr_hi = tmp;
338 tmp = cpu_to_le16(get_unaligned_be16(p + 1));
339 p_tcp->remote_mac_addr_mid = tmp;
340 tmp = cpu_to_le16(get_unaligned_be16(p + 2));
341 p_tcp->remote_mac_addr_lo = tmp;
342
343 p_tcp->vlan_id = cpu_to_le16(p_conn->vlan_id);
344
345 p_tcp->flags = cpu_to_le16(p_conn->tcp_flags);
346 p_tcp->ip_version = p_conn->ip_version;
347 for (i = 0; i < 4; i++) {
348 dval = p_conn->remote_ip[i];
349 p_tcp->remote_ip[i] = cpu_to_le32(dval);
350 dval = p_conn->local_ip[i];
351 p_tcp->local_ip[i] = cpu_to_le32(dval);
352 }
353 p_tcp->ka_max_probe_cnt = p_conn->ka_max_probe_cnt;
354 p_tcp->dup_ack_theshold = p_conn->dup_ack_theshold;
355
356 p_tcp->rcv_next = cpu_to_le32(p_conn->rcv_next);
357 p_tcp->snd_una = cpu_to_le32(p_conn->snd_una);
358 p_tcp->snd_next = cpu_to_le32(p_conn->snd_next);
359 p_tcp->snd_max = cpu_to_le32(p_conn->snd_max);
360 p_tcp->snd_wnd = cpu_to_le32(p_conn->snd_wnd);
361 p_tcp->rcv_wnd = cpu_to_le32(p_conn->rcv_wnd);
362 p_tcp->snd_wl1 = cpu_to_le32(p_conn->snd_wl1);
363 p_tcp->cwnd = cpu_to_le32(p_conn->cwnd);
364 p_tcp->ss_thresh = cpu_to_le32(p_conn->ss_thresh);
365 p_tcp->srtt = cpu_to_le16(p_conn->srtt);
366 p_tcp->rtt_var = cpu_to_le16(p_conn->rtt_var);
367 p_tcp->ts_recent = cpu_to_le32(p_conn->ts_recent);
368 p_tcp->ts_recent_age = cpu_to_le32(p_conn->ts_recent_age);
369 p_tcp->total_rt = cpu_to_le32(p_conn->total_rt);
370 dval = p_conn->ka_timeout_delta;
371 p_tcp->ka_timeout_delta = cpu_to_le32(dval);
372 dval = p_conn->rt_timeout_delta;
373 p_tcp->rt_timeout_delta = cpu_to_le32(dval);
374 p_tcp->dup_ack_cnt = p_conn->dup_ack_cnt;
375 p_tcp->snd_wnd_probe_cnt = p_conn->snd_wnd_probe_cnt;
376 p_tcp->ka_probe_cnt = p_conn->ka_probe_cnt;
377 p_tcp->rt_cnt = p_conn->rt_cnt;
378 p_tcp->flow_label = cpu_to_le32(p_conn->flow_label);
379 p_tcp->ka_timeout = cpu_to_le32(p_conn->ka_timeout);
380 p_tcp->ka_interval = cpu_to_le32(p_conn->ka_interval);
381 p_tcp->max_rt_time = cpu_to_le32(p_conn->max_rt_time);
382 dval = p_conn->initial_rcv_wnd;
383 p_tcp->initial_rcv_wnd = cpu_to_le32(dval);
384 p_tcp->ttl = p_conn->ttl;
385 p_tcp->tos_or_tc = p_conn->tos_or_tc;
386 p_tcp->remote_port = cpu_to_le16(p_conn->remote_port);
387 p_tcp->local_port = cpu_to_le16(p_conn->local_port);
388 p_tcp->mss = cpu_to_le16(p_conn->mss);
389 p_tcp->snd_wnd_scale = p_conn->snd_wnd_scale;
390 p_tcp->rcv_wnd_scale = p_conn->rcv_wnd_scale;
391 wval = p_conn->da_timeout_value;
392 p_tcp->da_timeout_value = cpu_to_le16(wval);
393 p_tcp->ack_frequency = p_conn->ack_frequency;
394 p_tcp->connect_mode = p_conn->connect_mode;
395 } else {
396 p_tcp2 =
397 &((struct iscsi_spe_conn_offload_option2 *)p_ramrod)->tcp;
398
399 p = (u16 *)p_conn->local_mac;
400 tmp = cpu_to_le16(get_unaligned_be16(p));
401 p_tcp2->local_mac_addr_hi = tmp;
402 tmp = cpu_to_le16(get_unaligned_be16(p + 1));
403 p_tcp2->local_mac_addr_mid = tmp;
404 tmp = cpu_to_le16(get_unaligned_be16(p + 2));
405 p_tcp2->local_mac_addr_lo = tmp;
406
407 p = (u16 *)p_conn->remote_mac;
408 tmp = cpu_to_le16(get_unaligned_be16(p));
409 p_tcp2->remote_mac_addr_hi = tmp;
410 tmp = cpu_to_le16(get_unaligned_be16(p + 1));
411 p_tcp2->remote_mac_addr_mid = tmp;
412 tmp = cpu_to_le16(get_unaligned_be16(p + 2));
413 p_tcp2->remote_mac_addr_lo = tmp;
414
415 p_tcp2->vlan_id = cpu_to_le16(p_conn->vlan_id);
416 p_tcp2->flags = cpu_to_le16(p_conn->tcp_flags);
417
418 p_tcp2->ip_version = p_conn->ip_version;
419 for (i = 0; i < 4; i++) {
420 dval = p_conn->remote_ip[i];
421 p_tcp2->remote_ip[i] = cpu_to_le32(dval);
422 dval = p_conn->local_ip[i];
423 p_tcp2->local_ip[i] = cpu_to_le32(dval);
424 }
425
426 p_tcp2->flow_label = cpu_to_le32(p_conn->flow_label);
427 p_tcp2->ttl = p_conn->ttl;
428 p_tcp2->tos_or_tc = p_conn->tos_or_tc;
429 p_tcp2->remote_port = cpu_to_le16(p_conn->remote_port);
430 p_tcp2->local_port = cpu_to_le16(p_conn->local_port);
431 p_tcp2->mss = cpu_to_le16(p_conn->mss);
432 p_tcp2->rcv_wnd_scale = p_conn->rcv_wnd_scale;
433 p_tcp2->connect_mode = p_conn->connect_mode;
434 wval = p_conn->syn_ip_payload_length;
435 p_tcp2->syn_ip_payload_length = cpu_to_le16(wval);
436 p_tcp2->syn_phy_addr_lo = DMA_LO_LE(p_conn->syn_phy_addr);
437 p_tcp2->syn_phy_addr_hi = DMA_HI_LE(p_conn->syn_phy_addr);
438 p_tcp2->cwnd = cpu_to_le32(p_conn->cwnd);
439 p_tcp2->ka_max_probe_cnt = p_conn->ka_probe_cnt;
440 p_tcp2->ka_timeout = cpu_to_le32(p_conn->ka_timeout);
441 p_tcp2->max_rt_time = cpu_to_le32(p_conn->max_rt_time);
442 p_tcp2->ka_interval = cpu_to_le32(p_conn->ka_interval);
443 }
444
445 return qed_spq_post(p_hwfn, p_ent, NULL);
446 }
447
448 static int qed_sp_iscsi_conn_update(struct qed_hwfn *p_hwfn,
449 struct qed_iscsi_conn *p_conn,
450 enum spq_mode comp_mode,
451 struct qed_spq_comp_cb *p_comp_addr)
452 {
453 struct iscsi_conn_update_ramrod_params *p_ramrod = NULL;
454 struct qed_spq_entry *p_ent = NULL;
455 struct qed_sp_init_data init_data;
456 int rc = -EINVAL;
457 u32 dval;
458
459 /* Get SPQ entry */
460 memset(&init_data, 0, sizeof(init_data));
461 init_data.cid = p_conn->icid;
462 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
463 init_data.comp_mode = comp_mode;
464 init_data.p_comp_data = p_comp_addr;
465
466 rc = qed_sp_init_request(p_hwfn, &p_ent,
467 ISCSI_RAMROD_CMD_ID_UPDATE_CONN,
468 PROTOCOLID_ISCSI, &init_data);
469 if (rc)
470 return rc;
471
472 p_ramrod = &p_ent->ramrod.iscsi_conn_update;
473
474 p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id);
475 p_ramrod->flags = p_conn->update_flag;
476 p_ramrod->max_seq_size = cpu_to_le32(p_conn->max_seq_size);
477 dval = p_conn->max_recv_pdu_length;
478 p_ramrod->max_recv_pdu_length = cpu_to_le32(dval);
479 dval = p_conn->max_send_pdu_length;
480 p_ramrod->max_send_pdu_length = cpu_to_le32(dval);
481 dval = p_conn->first_seq_length;
482 p_ramrod->first_seq_length = cpu_to_le32(dval);
483 p_ramrod->exp_stat_sn = cpu_to_le32(p_conn->exp_stat_sn);
484
485 return qed_spq_post(p_hwfn, p_ent, NULL);
486 }
487
488 static int
489 qed_sp_iscsi_mac_update(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_mac_update *p_ramrod = NULL;
495 struct qed_spq_entry *p_ent = NULL;
496 struct qed_sp_init_data init_data;
497 int rc = -EINVAL;
498 u8 ucval;
499
500 /* Get SPQ entry */
501 memset(&init_data, 0, sizeof(init_data));
502 init_data.cid = p_conn->icid;
503 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
504 init_data.comp_mode = comp_mode;
505 init_data.p_comp_data = p_comp_addr;
506
507 rc = qed_sp_init_request(p_hwfn, &p_ent,
508 ISCSI_RAMROD_CMD_ID_MAC_UPDATE,
509 PROTOCOLID_ISCSI, &init_data);
510 if (rc)
511 return rc;
512
513 p_ramrod = &p_ent->ramrod.iscsi_conn_mac_update;
514
515 p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id);
516 ucval = p_conn->remote_mac[1];
517 ((u8 *)(&p_ramrod->remote_mac_addr_hi))[0] = ucval;
518 ucval = p_conn->remote_mac[0];
519 ((u8 *)(&p_ramrod->remote_mac_addr_hi))[1] = ucval;
520 ucval = p_conn->remote_mac[3];
521 ((u8 *)(&p_ramrod->remote_mac_addr_mid))[0] = ucval;
522 ucval = p_conn->remote_mac[2];
523 ((u8 *)(&p_ramrod->remote_mac_addr_mid))[1] = ucval;
524 ucval = p_conn->remote_mac[5];
525 ((u8 *)(&p_ramrod->remote_mac_addr_lo))[0] = ucval;
526 ucval = p_conn->remote_mac[4];
527 ((u8 *)(&p_ramrod->remote_mac_addr_lo))[1] = ucval;
528
529 return qed_spq_post(p_hwfn, p_ent, NULL);
530 }
531
532 static int qed_sp_iscsi_conn_terminate(struct qed_hwfn *p_hwfn,
533 struct qed_iscsi_conn *p_conn,
534 enum spq_mode comp_mode,
535 struct qed_spq_comp_cb *p_comp_addr)
536 {
537 struct iscsi_spe_conn_termination *p_ramrod = NULL;
538 struct qed_spq_entry *p_ent = NULL;
539 struct qed_sp_init_data init_data;
540 int rc = -EINVAL;
541
542 /* Get SPQ entry */
543 memset(&init_data, 0, sizeof(init_data));
544 init_data.cid = p_conn->icid;
545 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
546 init_data.comp_mode = comp_mode;
547 init_data.p_comp_data = p_comp_addr;
548
549 rc = qed_sp_init_request(p_hwfn, &p_ent,
550 ISCSI_RAMROD_CMD_ID_TERMINATION_CONN,
551 PROTOCOLID_ISCSI, &init_data);
552 if (rc)
553 return rc;
554
555 p_ramrod = &p_ent->ramrod.iscsi_conn_terminate;
556
557 p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id);
558 p_ramrod->abortive = p_conn->abortive_dsconnect;
559
560 DMA_REGPAIR_LE(p_ramrod->query_params_addr,
561 p_conn->tcp_upload_params_phys_addr);
562 DMA_REGPAIR_LE(p_ramrod->queue_cnts_addr, p_conn->queue_cnts_phys_addr);
563
564 return qed_spq_post(p_hwfn, p_ent, NULL);
565 }
566
567 static int qed_sp_iscsi_conn_clear_sq(struct qed_hwfn *p_hwfn,
568 struct qed_iscsi_conn *p_conn,
569 enum spq_mode comp_mode,
570 struct qed_spq_comp_cb *p_comp_addr)
571 {
572 struct qed_spq_entry *p_ent = NULL;
573 struct qed_sp_init_data init_data;
574 int rc = -EINVAL;
575
576 /* Get SPQ entry */
577 memset(&init_data, 0, sizeof(init_data));
578 init_data.cid = p_conn->icid;
579 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
580 init_data.comp_mode = comp_mode;
581 init_data.p_comp_data = p_comp_addr;
582
583 rc = qed_sp_init_request(p_hwfn, &p_ent,
584 ISCSI_RAMROD_CMD_ID_CLEAR_SQ,
585 PROTOCOLID_ISCSI, &init_data);
586 if (rc)
587 return rc;
588
589 return qed_spq_post(p_hwfn, p_ent, NULL);
590 }
591
592 static int qed_sp_iscsi_func_stop(struct qed_hwfn *p_hwfn,
593 enum spq_mode comp_mode,
594 struct qed_spq_comp_cb *p_comp_addr)
595 {
596 struct qed_spq_entry *p_ent = NULL;
597 struct qed_sp_init_data init_data;
598 int rc = 0;
599
600 /* Get SPQ entry */
601 memset(&init_data, 0, sizeof(init_data));
602 init_data.cid = qed_spq_get_cid(p_hwfn);
603 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
604 init_data.comp_mode = comp_mode;
605 init_data.p_comp_data = p_comp_addr;
606
607 rc = qed_sp_init_request(p_hwfn, &p_ent,
608 ISCSI_RAMROD_CMD_ID_DESTROY_FUNC,
609 PROTOCOLID_ISCSI, &init_data);
610 if (rc)
611 return rc;
612
613 rc = qed_spq_post(p_hwfn, p_ent, NULL);
614
615 qed_spq_unregister_async_cb(p_hwfn, PROTOCOLID_ISCSI);
616 return rc;
617 }
618
619 static void __iomem *qed_iscsi_get_db_addr(struct qed_hwfn *p_hwfn, u32 cid)
620 {
621 return (u8 __iomem *)p_hwfn->doorbells +
622 qed_db_addr(cid, DQ_DEMS_LEGACY);
623 }
624
625 static void __iomem *qed_iscsi_get_primary_bdq_prod(struct qed_hwfn *p_hwfn,
626 u8 bdq_id)
627 {
628 if (RESC_NUM(p_hwfn, QED_BDQ)) {
629 return (u8 __iomem *)p_hwfn->regview +
630 GTT_BAR0_MAP_REG_MSDM_RAM +
631 MSTORM_SCSI_BDQ_EXT_PROD_OFFSET(RESC_START(p_hwfn,
632 QED_BDQ),
633 bdq_id);
634 } else {
635 DP_NOTICE(p_hwfn, "BDQ is not allocated!\n");
636 return NULL;
637 }
638 }
639
640 static void __iomem *qed_iscsi_get_secondary_bdq_prod(struct qed_hwfn *p_hwfn,
641 u8 bdq_id)
642 {
643 if (RESC_NUM(p_hwfn, QED_BDQ)) {
644 return (u8 __iomem *)p_hwfn->regview +
645 GTT_BAR0_MAP_REG_TSDM_RAM +
646 TSTORM_SCSI_BDQ_EXT_PROD_OFFSET(RESC_START(p_hwfn,
647 QED_BDQ),
648 bdq_id);
649 } else {
650 DP_NOTICE(p_hwfn, "BDQ is not allocated!\n");
651 return NULL;
652 }
653 }
654
655 static int qed_iscsi_setup_connection(struct qed_iscsi_conn *p_conn)
656 {
657 if (!p_conn->queue_cnts_virt_addr)
658 goto nomem;
659 memset(p_conn->queue_cnts_virt_addr, 0,
660 sizeof(*p_conn->queue_cnts_virt_addr));
661
662 if (!p_conn->tcp_upload_params_virt_addr)
663 goto nomem;
664 memset(p_conn->tcp_upload_params_virt_addr, 0,
665 sizeof(*p_conn->tcp_upload_params_virt_addr));
666
667 if (!p_conn->r2tq.p_virt_addr)
668 goto nomem;
669 qed_chain_pbl_zero_mem(&p_conn->r2tq);
670
671 if (!p_conn->uhq.p_virt_addr)
672 goto nomem;
673 qed_chain_pbl_zero_mem(&p_conn->uhq);
674
675 if (!p_conn->xhq.p_virt_addr)
676 goto nomem;
677 qed_chain_pbl_zero_mem(&p_conn->xhq);
678
679 return 0;
680 nomem:
681 return -ENOMEM;
682 }
683
684 static int qed_iscsi_allocate_connection(struct qed_hwfn *p_hwfn,
685 struct qed_iscsi_conn **p_out_conn)
686 {
687 struct scsi_terminate_extra_params *p_q_cnts = NULL;
688 struct qed_iscsi_pf_params *p_params = NULL;
689 struct qed_chain_init_params params = {
690 .mode = QED_CHAIN_MODE_PBL,
691 .intended_use = QED_CHAIN_USE_TO_CONSUME_PRODUCE,
692 .cnt_type = QED_CHAIN_CNT_TYPE_U16,
693 };
694 struct tcp_upload_params *p_tcp = NULL;
695 struct qed_iscsi_conn *p_conn = NULL;
696 int rc = 0;
697
698 /* Try finding a free connection that can be used */
699 spin_lock_bh(&p_hwfn->p_iscsi_info->lock);
700 if (!list_empty(&p_hwfn->p_iscsi_info->free_list))
701 p_conn = list_first_entry(&p_hwfn->p_iscsi_info->free_list,
702 struct qed_iscsi_conn, list_entry);
703 if (p_conn) {
704 list_del(&p_conn->list_entry);
705 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock);
706 *p_out_conn = p_conn;
707 return 0;
708 }
709 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock);
710
711 /* Need to allocate a new connection */
712 p_params = &p_hwfn->pf_params.iscsi_pf_params;
713
714 p_conn = kzalloc(sizeof(*p_conn), GFP_KERNEL);
715 if (!p_conn)
716 return -ENOMEM;
717
718 p_q_cnts = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev,
719 sizeof(*p_q_cnts),
720 &p_conn->queue_cnts_phys_addr,
721 GFP_KERNEL);
722 if (!p_q_cnts)
723 goto nomem_queue_cnts_param;
724 p_conn->queue_cnts_virt_addr = p_q_cnts;
725
726 p_tcp = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev,
727 sizeof(*p_tcp),
728 &p_conn->tcp_upload_params_phys_addr,
729 GFP_KERNEL);
730 if (!p_tcp)
731 goto nomem_upload_param;
732 p_conn->tcp_upload_params_virt_addr = p_tcp;
733
734 params.num_elems = p_params->num_r2tq_pages_in_ring *
735 QED_CHAIN_PAGE_SIZE / sizeof(struct iscsi_wqe);
736 params.elem_size = sizeof(struct iscsi_wqe);
737
738 rc = qed_chain_alloc(p_hwfn->cdev, &p_conn->r2tq, &params);
739 if (rc)
740 goto nomem_r2tq;
741
742 params.num_elems = p_params->num_uhq_pages_in_ring *
743 QED_CHAIN_PAGE_SIZE / sizeof(struct iscsi_uhqe);
744 params.elem_size = sizeof(struct iscsi_uhqe);
745
746 rc = qed_chain_alloc(p_hwfn->cdev, &p_conn->uhq, &params);
747 if (rc)
748 goto nomem_uhq;
749
750 params.elem_size = sizeof(struct iscsi_xhqe);
751
752 rc = qed_chain_alloc(p_hwfn->cdev, &p_conn->xhq, &params);
753 if (rc)
754 goto nomem;
755
756 p_conn->free_on_delete = true;
757 *p_out_conn = p_conn;
758 return 0;
759
760 nomem:
761 qed_chain_free(p_hwfn->cdev, &p_conn->uhq);
762 nomem_uhq:
763 qed_chain_free(p_hwfn->cdev, &p_conn->r2tq);
764 nomem_r2tq:
765 dma_free_coherent(&p_hwfn->cdev->pdev->dev,
766 sizeof(struct tcp_upload_params),
767 p_conn->tcp_upload_params_virt_addr,
768 p_conn->tcp_upload_params_phys_addr);
769 nomem_upload_param:
770 dma_free_coherent(&p_hwfn->cdev->pdev->dev,
771 sizeof(struct scsi_terminate_extra_params),
772 p_conn->queue_cnts_virt_addr,
773 p_conn->queue_cnts_phys_addr);
774 nomem_queue_cnts_param:
775 kfree(p_conn);
776
777 return -ENOMEM;
778 }
779
780 static int qed_iscsi_acquire_connection(struct qed_hwfn *p_hwfn,
781 struct qed_iscsi_conn *p_in_conn,
782 struct qed_iscsi_conn **p_out_conn)
783 {
784 struct qed_iscsi_conn *p_conn = NULL;
785 int rc = 0;
786 u32 icid;
787
788 spin_lock_bh(&p_hwfn->p_iscsi_info->lock);
789 rc = qed_cxt_acquire_cid(p_hwfn, PROTOCOLID_ISCSI, &icid);
790 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock);
791 if (rc)
792 return rc;
793
794 /* Use input connection or allocate a new one */
795 if (p_in_conn)
796 p_conn = p_in_conn;
797 else
798 rc = qed_iscsi_allocate_connection(p_hwfn, &p_conn);
799
800 if (!rc)
801 rc = qed_iscsi_setup_connection(p_conn);
802
803 if (rc) {
804 spin_lock_bh(&p_hwfn->p_iscsi_info->lock);
805 qed_cxt_release_cid(p_hwfn, icid);
806 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock);
807 return rc;
808 }
809
810 p_conn->icid = icid;
811 p_conn->conn_id = (u16)icid;
812 p_conn->fw_cid = (p_hwfn->hw_info.opaque_fid << 16) | icid;
813
814 *p_out_conn = p_conn;
815
816 return rc;
817 }
818
819 static void qed_iscsi_release_connection(struct qed_hwfn *p_hwfn,
820 struct qed_iscsi_conn *p_conn)
821 {
822 spin_lock_bh(&p_hwfn->p_iscsi_info->lock);
823 list_add_tail(&p_conn->list_entry, &p_hwfn->p_iscsi_info->free_list);
824 qed_cxt_release_cid(p_hwfn, p_conn->icid);
825 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock);
826 }
827
828 static void qed_iscsi_free_connection(struct qed_hwfn *p_hwfn,
829 struct qed_iscsi_conn *p_conn)
830 {
831 qed_chain_free(p_hwfn->cdev, &p_conn->xhq);
832 qed_chain_free(p_hwfn->cdev, &p_conn->uhq);
833 qed_chain_free(p_hwfn->cdev, &p_conn->r2tq);
834 dma_free_coherent(&p_hwfn->cdev->pdev->dev,
835 sizeof(struct tcp_upload_params),
836 p_conn->tcp_upload_params_virt_addr,
837 p_conn->tcp_upload_params_phys_addr);
838 dma_free_coherent(&p_hwfn->cdev->pdev->dev,
839 sizeof(struct scsi_terminate_extra_params),
840 p_conn->queue_cnts_virt_addr,
841 p_conn->queue_cnts_phys_addr);
842 kfree(p_conn);
843 }
844
845 int qed_iscsi_alloc(struct qed_hwfn *p_hwfn)
846 {
847 struct qed_iscsi_info *p_iscsi_info;
848
849 p_iscsi_info = kzalloc(sizeof(*p_iscsi_info), GFP_KERNEL);
850 if (!p_iscsi_info)
851 return -ENOMEM;
852
853 INIT_LIST_HEAD(&p_iscsi_info->free_list);
854
855 p_hwfn->p_iscsi_info = p_iscsi_info;
856 return 0;
857 }
858
859 void qed_iscsi_setup(struct qed_hwfn *p_hwfn)
860 {
861 spin_lock_init(&p_hwfn->p_iscsi_info->lock);
862 }
863
864 void qed_iscsi_free(struct qed_hwfn *p_hwfn)
865 {
866 struct qed_iscsi_conn *p_conn = NULL;
867
868 if (!p_hwfn->p_iscsi_info)
869 return;
870
871 while (!list_empty(&p_hwfn->p_iscsi_info->free_list)) {
872 p_conn = list_first_entry(&p_hwfn->p_iscsi_info->free_list,
873 struct qed_iscsi_conn, list_entry);
874 if (p_conn) {
875 list_del(&p_conn->list_entry);
876 qed_iscsi_free_connection(p_hwfn, p_conn);
877 }
878 }
879
880 kfree(p_hwfn->p_iscsi_info);
881 p_hwfn->p_iscsi_info = NULL;
882 }
883
884 static void _qed_iscsi_get_tstats(struct qed_hwfn *p_hwfn,
885 struct qed_ptt *p_ptt,
886 struct qed_iscsi_stats *p_stats)
887 {
888 struct tstorm_iscsi_stats_drv tstats;
889 u32 tstats_addr;
890
891 memset(&tstats, 0, sizeof(tstats));
892 tstats_addr = BAR0_MAP_REG_TSDM_RAM +
893 TSTORM_ISCSI_RX_STATS_OFFSET(p_hwfn->rel_pf_id);
894 qed_memcpy_from(p_hwfn, p_ptt, &tstats, tstats_addr, sizeof(tstats));
895
896 p_stats->iscsi_rx_bytes_cnt =
897 HILO_64_REGPAIR(tstats.iscsi_rx_bytes_cnt);
898 p_stats->iscsi_rx_packet_cnt =
899 HILO_64_REGPAIR(tstats.iscsi_rx_packet_cnt);
900 p_stats->iscsi_rx_new_ooo_isle_events_cnt =
901 HILO_64_REGPAIR(tstats.iscsi_rx_new_ooo_isle_events_cnt);
902 p_stats->iscsi_cmdq_threshold_cnt =
903 le32_to_cpu(tstats.iscsi_cmdq_threshold_cnt);
904 p_stats->iscsi_rq_threshold_cnt =
905 le32_to_cpu(tstats.iscsi_rq_threshold_cnt);
906 p_stats->iscsi_immq_threshold_cnt =
907 le32_to_cpu(tstats.iscsi_immq_threshold_cnt);
908 }
909
910 static void _qed_iscsi_get_mstats(struct qed_hwfn *p_hwfn,
911 struct qed_ptt *p_ptt,
912 struct qed_iscsi_stats *p_stats)
913 {
914 struct mstorm_iscsi_stats_drv mstats;
915 u32 mstats_addr;
916
917 memset(&mstats, 0, sizeof(mstats));
918 mstats_addr = BAR0_MAP_REG_MSDM_RAM +
919 MSTORM_ISCSI_RX_STATS_OFFSET(p_hwfn->rel_pf_id);
920 qed_memcpy_from(p_hwfn, p_ptt, &mstats, mstats_addr, sizeof(mstats));
921
922 p_stats->iscsi_rx_dropped_pdus_task_not_valid =
923 HILO_64_REGPAIR(mstats.iscsi_rx_dropped_pdus_task_not_valid);
924 }
925
926 static void _qed_iscsi_get_ustats(struct qed_hwfn *p_hwfn,
927 struct qed_ptt *p_ptt,
928 struct qed_iscsi_stats *p_stats)
929 {
930 struct ustorm_iscsi_stats_drv ustats;
931 u32 ustats_addr;
932
933 memset(&ustats, 0, sizeof(ustats));
934 ustats_addr = BAR0_MAP_REG_USDM_RAM +
935 USTORM_ISCSI_RX_STATS_OFFSET(p_hwfn->rel_pf_id);
936 qed_memcpy_from(p_hwfn, p_ptt, &ustats, ustats_addr, sizeof(ustats));
937
938 p_stats->iscsi_rx_data_pdu_cnt =
939 HILO_64_REGPAIR(ustats.iscsi_rx_data_pdu_cnt);
940 p_stats->iscsi_rx_r2t_pdu_cnt =
941 HILO_64_REGPAIR(ustats.iscsi_rx_r2t_pdu_cnt);
942 p_stats->iscsi_rx_total_pdu_cnt =
943 HILO_64_REGPAIR(ustats.iscsi_rx_total_pdu_cnt);
944 }
945
946 static void _qed_iscsi_get_xstats(struct qed_hwfn *p_hwfn,
947 struct qed_ptt *p_ptt,
948 struct qed_iscsi_stats *p_stats)
949 {
950 struct xstorm_iscsi_stats_drv xstats;
951 u32 xstats_addr;
952
953 memset(&xstats, 0, sizeof(xstats));
954 xstats_addr = BAR0_MAP_REG_XSDM_RAM +
955 XSTORM_ISCSI_TX_STATS_OFFSET(p_hwfn->rel_pf_id);
956 qed_memcpy_from(p_hwfn, p_ptt, &xstats, xstats_addr, sizeof(xstats));
957
958 p_stats->iscsi_tx_go_to_slow_start_event_cnt =
959 HILO_64_REGPAIR(xstats.iscsi_tx_go_to_slow_start_event_cnt);
960 p_stats->iscsi_tx_fast_retransmit_event_cnt =
961 HILO_64_REGPAIR(xstats.iscsi_tx_fast_retransmit_event_cnt);
962 }
963
964 static void _qed_iscsi_get_ystats(struct qed_hwfn *p_hwfn,
965 struct qed_ptt *p_ptt,
966 struct qed_iscsi_stats *p_stats)
967 {
968 struct ystorm_iscsi_stats_drv ystats;
969 u32 ystats_addr;
970
971 memset(&ystats, 0, sizeof(ystats));
972 ystats_addr = BAR0_MAP_REG_YSDM_RAM +
973 YSTORM_ISCSI_TX_STATS_OFFSET(p_hwfn->rel_pf_id);
974 qed_memcpy_from(p_hwfn, p_ptt, &ystats, ystats_addr, sizeof(ystats));
975
976 p_stats->iscsi_tx_data_pdu_cnt =
977 HILO_64_REGPAIR(ystats.iscsi_tx_data_pdu_cnt);
978 p_stats->iscsi_tx_r2t_pdu_cnt =
979 HILO_64_REGPAIR(ystats.iscsi_tx_r2t_pdu_cnt);
980 p_stats->iscsi_tx_total_pdu_cnt =
981 HILO_64_REGPAIR(ystats.iscsi_tx_total_pdu_cnt);
982 }
983
984 static void _qed_iscsi_get_pstats(struct qed_hwfn *p_hwfn,
985 struct qed_ptt *p_ptt,
986 struct qed_iscsi_stats *p_stats)
987 {
988 struct pstorm_iscsi_stats_drv pstats;
989 u32 pstats_addr;
990
991 memset(&pstats, 0, sizeof(pstats));
992 pstats_addr = BAR0_MAP_REG_PSDM_RAM +
993 PSTORM_ISCSI_TX_STATS_OFFSET(p_hwfn->rel_pf_id);
994 qed_memcpy_from(p_hwfn, p_ptt, &pstats, pstats_addr, sizeof(pstats));
995
996 p_stats->iscsi_tx_bytes_cnt =
997 HILO_64_REGPAIR(pstats.iscsi_tx_bytes_cnt);
998 p_stats->iscsi_tx_packet_cnt =
999 HILO_64_REGPAIR(pstats.iscsi_tx_packet_cnt);
1000 }
1001
1002 static int qed_iscsi_get_stats(struct qed_hwfn *p_hwfn,
1003 struct qed_iscsi_stats *stats)
1004 {
1005 struct qed_ptt *p_ptt;
1006
1007 memset(stats, 0, sizeof(*stats));
1008
1009 p_ptt = qed_ptt_acquire(p_hwfn);
1010 if (!p_ptt) {
1011 DP_ERR(p_hwfn, "Failed to acquire ptt\n");
1012 return -EAGAIN;
1013 }
1014
1015 _qed_iscsi_get_tstats(p_hwfn, p_ptt, stats);
1016 _qed_iscsi_get_mstats(p_hwfn, p_ptt, stats);
1017 _qed_iscsi_get_ustats(p_hwfn, p_ptt, stats);
1018
1019 _qed_iscsi_get_xstats(p_hwfn, p_ptt, stats);
1020 _qed_iscsi_get_ystats(p_hwfn, p_ptt, stats);
1021 _qed_iscsi_get_pstats(p_hwfn, p_ptt, stats);
1022
1023 qed_ptt_release(p_hwfn, p_ptt);
1024
1025 return 0;
1026 }
1027
1028 struct qed_hash_iscsi_con {
1029 struct hlist_node node;
1030 struct qed_iscsi_conn *con;
1031 };
1032
1033 static int qed_fill_iscsi_dev_info(struct qed_dev *cdev,
1034 struct qed_dev_iscsi_info *info)
1035 {
1036 struct qed_hwfn *hwfn = QED_AFFIN_HWFN(cdev);
1037
1038 int rc;
1039
1040 memset(info, 0, sizeof(*info));
1041 rc = qed_fill_dev_info(cdev, &info->common);
1042
1043 info->primary_dbq_rq_addr =
1044 qed_iscsi_get_primary_bdq_prod(hwfn, BDQ_ID_RQ);
1045 info->secondary_bdq_rq_addr =
1046 qed_iscsi_get_secondary_bdq_prod(hwfn, BDQ_ID_RQ);
1047
1048 info->num_cqs = FEAT_NUM(hwfn, QED_ISCSI_CQ);
1049
1050 return rc;
1051 }
1052
1053 static void qed_register_iscsi_ops(struct qed_dev *cdev,
1054 struct qed_iscsi_cb_ops *ops, void *cookie)
1055 {
1056 cdev->protocol_ops.iscsi = ops;
1057 cdev->ops_cookie = cookie;
1058 }
1059
1060 static struct qed_hash_iscsi_con *qed_iscsi_get_hash(struct qed_dev *cdev,
1061 u32 handle)
1062 {
1063 struct qed_hash_iscsi_con *hash_con = NULL;
1064
1065 if (!(cdev->flags & QED_FLAG_STORAGE_STARTED))
1066 return NULL;
1067
1068 hash_for_each_possible(cdev->connections, hash_con, node, handle) {
1069 if (hash_con->con->icid == handle)
1070 break;
1071 }
1072
1073 if (!hash_con || (hash_con->con->icid != handle))
1074 return NULL;
1075
1076 return hash_con;
1077 }
1078
1079 static int qed_iscsi_stop(struct qed_dev *cdev)
1080 {
1081 int rc;
1082
1083 if (!(cdev->flags & QED_FLAG_STORAGE_STARTED)) {
1084 DP_NOTICE(cdev, "iscsi already stopped\n");
1085 return 0;
1086 }
1087
1088 if (!hash_empty(cdev->connections)) {
1089 DP_NOTICE(cdev,
1090 "Can't stop iscsi - not all connections were returned\n");
1091 return -EINVAL;
1092 }
1093
1094 /* Stop the iscsi */
1095 rc = qed_sp_iscsi_func_stop(QED_AFFIN_HWFN(cdev), QED_SPQ_MODE_EBLOCK,
1096 NULL);
1097 cdev->flags &= ~QED_FLAG_STORAGE_STARTED;
1098
1099 return rc;
1100 }
1101
1102 static int qed_iscsi_start(struct qed_dev *cdev,
1103 struct qed_iscsi_tid *tasks,
1104 void *event_context,
1105 iscsi_event_cb_t async_event_cb)
1106 {
1107 int rc;
1108 struct qed_tid_mem *tid_info;
1109
1110 if (cdev->flags & QED_FLAG_STORAGE_STARTED) {
1111 DP_NOTICE(cdev, "iscsi already started;\n");
1112 return 0;
1113 }
1114
1115 rc = qed_sp_iscsi_func_start(QED_AFFIN_HWFN(cdev), QED_SPQ_MODE_EBLOCK,
1116 NULL, event_context, async_event_cb);
1117 if (rc) {
1118 DP_NOTICE(cdev, "Failed to start iscsi\n");
1119 return rc;
1120 }
1121
1122 cdev->flags |= QED_FLAG_STORAGE_STARTED;
1123 hash_init(cdev->connections);
1124
1125 if (!tasks)
1126 return 0;
1127
1128 tid_info = kzalloc(sizeof(*tid_info), GFP_KERNEL);
1129
1130 if (!tid_info) {
1131 qed_iscsi_stop(cdev);
1132 return -ENOMEM;
1133 }
1134
1135 rc = qed_cxt_get_tid_mem_info(QED_AFFIN_HWFN(cdev), tid_info);
1136 if (rc) {
1137 DP_NOTICE(cdev, "Failed to gather task information\n");
1138 qed_iscsi_stop(cdev);
1139 kfree(tid_info);
1140 return rc;
1141 }
1142
1143 /* Fill task information */
1144 tasks->size = tid_info->tid_size;
1145 tasks->num_tids_per_block = tid_info->num_tids_per_block;
1146 memcpy(tasks->blocks, tid_info->blocks,
1147 MAX_TID_BLOCKS_ISCSI * sizeof(u8 *));
1148
1149 kfree(tid_info);
1150
1151 return 0;
1152 }
1153
1154 static int qed_iscsi_acquire_conn(struct qed_dev *cdev,
1155 u32 *handle,
1156 u32 *fw_cid, void __iomem **p_doorbell)
1157 {
1158 struct qed_hash_iscsi_con *hash_con;
1159 int rc;
1160
1161 /* Allocate a hashed connection */
1162 hash_con = kzalloc(sizeof(*hash_con), GFP_ATOMIC);
1163 if (!hash_con)
1164 return -ENOMEM;
1165
1166 /* Acquire the connection */
1167 rc = qed_iscsi_acquire_connection(QED_AFFIN_HWFN(cdev), NULL,
1168 &hash_con->con);
1169 if (rc) {
1170 DP_NOTICE(cdev, "Failed to acquire Connection\n");
1171 kfree(hash_con);
1172 return rc;
1173 }
1174
1175 /* Added the connection to hash table */
1176 *handle = hash_con->con->icid;
1177 *fw_cid = hash_con->con->fw_cid;
1178 hash_add(cdev->connections, &hash_con->node, *handle);
1179
1180 if (p_doorbell)
1181 *p_doorbell = qed_iscsi_get_db_addr(QED_AFFIN_HWFN(cdev),
1182 *handle);
1183
1184 return 0;
1185 }
1186
1187 static int qed_iscsi_release_conn(struct qed_dev *cdev, u32 handle)
1188 {
1189 struct qed_hash_iscsi_con *hash_con;
1190
1191 hash_con = qed_iscsi_get_hash(cdev, handle);
1192 if (!hash_con) {
1193 DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
1194 handle);
1195 return -EINVAL;
1196 }
1197
1198 hlist_del(&hash_con->node);
1199 qed_iscsi_release_connection(QED_AFFIN_HWFN(cdev), hash_con->con);
1200 kfree(hash_con);
1201
1202 return 0;
1203 }
1204
1205 static int qed_iscsi_offload_conn(struct qed_dev *cdev,
1206 u32 handle,
1207 struct qed_iscsi_params_offload *conn_info)
1208 {
1209 struct qed_hash_iscsi_con *hash_con;
1210 struct qed_iscsi_conn *con;
1211
1212 hash_con = qed_iscsi_get_hash(cdev, handle);
1213 if (!hash_con) {
1214 DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
1215 handle);
1216 return -EINVAL;
1217 }
1218
1219 /* Update the connection with information from the params */
1220 con = hash_con->con;
1221
1222 ether_addr_copy(con->local_mac, conn_info->src.mac);
1223 ether_addr_copy(con->remote_mac, conn_info->dst.mac);
1224 memcpy(con->local_ip, conn_info->src.ip, sizeof(con->local_ip));
1225 memcpy(con->remote_ip, conn_info->dst.ip, sizeof(con->remote_ip));
1226 con->local_port = conn_info->src.port;
1227 con->remote_port = conn_info->dst.port;
1228
1229 con->layer_code = conn_info->layer_code;
1230 con->sq_pbl_addr = conn_info->sq_pbl_addr;
1231 con->initial_ack = conn_info->initial_ack;
1232 con->vlan_id = conn_info->vlan_id;
1233 con->tcp_flags = conn_info->tcp_flags;
1234 con->ip_version = conn_info->ip_version;
1235 con->default_cq = conn_info->default_cq;
1236 con->ka_max_probe_cnt = conn_info->ka_max_probe_cnt;
1237 con->dup_ack_theshold = conn_info->dup_ack_theshold;
1238 con->rcv_next = conn_info->rcv_next;
1239 con->snd_una = conn_info->snd_una;
1240 con->snd_next = conn_info->snd_next;
1241 con->snd_max = conn_info->snd_max;
1242 con->snd_wnd = conn_info->snd_wnd;
1243 con->rcv_wnd = conn_info->rcv_wnd;
1244 con->snd_wl1 = conn_info->snd_wl1;
1245 con->cwnd = conn_info->cwnd;
1246 con->ss_thresh = conn_info->ss_thresh;
1247 con->srtt = conn_info->srtt;
1248 con->rtt_var = conn_info->rtt_var;
1249 con->ts_recent = conn_info->ts_recent;
1250 con->ts_recent_age = conn_info->ts_recent_age;
1251 con->total_rt = conn_info->total_rt;
1252 con->ka_timeout_delta = conn_info->ka_timeout_delta;
1253 con->rt_timeout_delta = conn_info->rt_timeout_delta;
1254 con->dup_ack_cnt = conn_info->dup_ack_cnt;
1255 con->snd_wnd_probe_cnt = conn_info->snd_wnd_probe_cnt;
1256 con->ka_probe_cnt = conn_info->ka_probe_cnt;
1257 con->rt_cnt = conn_info->rt_cnt;
1258 con->flow_label = conn_info->flow_label;
1259 con->ka_timeout = conn_info->ka_timeout;
1260 con->ka_interval = conn_info->ka_interval;
1261 con->max_rt_time = conn_info->max_rt_time;
1262 con->initial_rcv_wnd = conn_info->initial_rcv_wnd;
1263 con->ttl = conn_info->ttl;
1264 con->tos_or_tc = conn_info->tos_or_tc;
1265 con->remote_port = conn_info->remote_port;
1266 con->local_port = conn_info->local_port;
1267 con->mss = conn_info->mss;
1268 con->snd_wnd_scale = conn_info->snd_wnd_scale;
1269 con->rcv_wnd_scale = conn_info->rcv_wnd_scale;
1270 con->da_timeout_value = conn_info->da_timeout_value;
1271 con->ack_frequency = conn_info->ack_frequency;
1272
1273 /* Set default values on other connection fields */
1274 con->offl_flags = 0x1;
1275
1276 return qed_sp_iscsi_conn_offload(QED_AFFIN_HWFN(cdev), con,
1277 QED_SPQ_MODE_EBLOCK, NULL);
1278 }
1279
1280 static int qed_iscsi_update_conn(struct qed_dev *cdev,
1281 u32 handle,
1282 struct qed_iscsi_params_update *conn_info)
1283 {
1284 struct qed_hash_iscsi_con *hash_con;
1285 struct qed_iscsi_conn *con;
1286
1287 hash_con = qed_iscsi_get_hash(cdev, handle);
1288 if (!hash_con) {
1289 DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
1290 handle);
1291 return -EINVAL;
1292 }
1293
1294 /* Update the connection with information from the params */
1295 con = hash_con->con;
1296 con->update_flag = conn_info->update_flag;
1297 con->max_seq_size = conn_info->max_seq_size;
1298 con->max_recv_pdu_length = conn_info->max_recv_pdu_length;
1299 con->max_send_pdu_length = conn_info->max_send_pdu_length;
1300 con->first_seq_length = conn_info->first_seq_length;
1301 con->exp_stat_sn = conn_info->exp_stat_sn;
1302
1303 return qed_sp_iscsi_conn_update(QED_AFFIN_HWFN(cdev), con,
1304 QED_SPQ_MODE_EBLOCK, NULL);
1305 }
1306
1307 static int qed_iscsi_clear_conn_sq(struct qed_dev *cdev, u32 handle)
1308 {
1309 struct qed_hash_iscsi_con *hash_con;
1310
1311 hash_con = qed_iscsi_get_hash(cdev, handle);
1312 if (!hash_con) {
1313 DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
1314 handle);
1315 return -EINVAL;
1316 }
1317
1318 return qed_sp_iscsi_conn_clear_sq(QED_AFFIN_HWFN(cdev), hash_con->con,
1319 QED_SPQ_MODE_EBLOCK, NULL);
1320 }
1321
1322 static int qed_iscsi_destroy_conn(struct qed_dev *cdev,
1323 u32 handle, u8 abrt_conn)
1324 {
1325 struct qed_hash_iscsi_con *hash_con;
1326
1327 hash_con = qed_iscsi_get_hash(cdev, handle);
1328 if (!hash_con) {
1329 DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
1330 handle);
1331 return -EINVAL;
1332 }
1333
1334 hash_con->con->abortive_dsconnect = abrt_conn;
1335
1336 return qed_sp_iscsi_conn_terminate(QED_AFFIN_HWFN(cdev), hash_con->con,
1337 QED_SPQ_MODE_EBLOCK, NULL);
1338 }
1339
1340 static int qed_iscsi_stats(struct qed_dev *cdev, struct qed_iscsi_stats *stats)
1341 {
1342 return qed_iscsi_get_stats(QED_AFFIN_HWFN(cdev), stats);
1343 }
1344
1345 static int qed_iscsi_change_mac(struct qed_dev *cdev,
1346 u32 handle, const u8 *mac)
1347 {
1348 struct qed_hash_iscsi_con *hash_con;
1349
1350 hash_con = qed_iscsi_get_hash(cdev, handle);
1351 if (!hash_con) {
1352 DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
1353 handle);
1354 return -EINVAL;
1355 }
1356
1357 return qed_sp_iscsi_mac_update(QED_AFFIN_HWFN(cdev), hash_con->con,
1358 QED_SPQ_MODE_EBLOCK, NULL);
1359 }
1360
1361 void qed_get_protocol_stats_iscsi(struct qed_dev *cdev,
1362 struct qed_mcp_iscsi_stats *stats)
1363 {
1364 struct qed_iscsi_stats proto_stats;
1365
1366 /* Retrieve FW statistics */
1367 memset(&proto_stats, 0, sizeof(proto_stats));
1368 if (qed_iscsi_stats(cdev, &proto_stats)) {
1369 DP_VERBOSE(cdev, QED_MSG_STORAGE,
1370 "Failed to collect ISCSI statistics\n");
1371 return;
1372 }
1373
1374 /* Translate FW statistics into struct */
1375 stats->rx_pdus = proto_stats.iscsi_rx_total_pdu_cnt;
1376 stats->tx_pdus = proto_stats.iscsi_tx_total_pdu_cnt;
1377 stats->rx_bytes = proto_stats.iscsi_rx_bytes_cnt;
1378 stats->tx_bytes = proto_stats.iscsi_tx_bytes_cnt;
1379 }
1380
1381 static const struct qed_iscsi_ops qed_iscsi_ops_pass = {
1382 .common = &qed_common_ops_pass,
1383 .ll2 = &qed_ll2_ops_pass,
1384 .fill_dev_info = &qed_fill_iscsi_dev_info,
1385 .register_ops = &qed_register_iscsi_ops,
1386 .start = &qed_iscsi_start,
1387 .stop = &qed_iscsi_stop,
1388 .acquire_conn = &qed_iscsi_acquire_conn,
1389 .release_conn = &qed_iscsi_release_conn,
1390 .offload_conn = &qed_iscsi_offload_conn,
1391 .update_conn = &qed_iscsi_update_conn,
1392 .destroy_conn = &qed_iscsi_destroy_conn,
1393 .clear_sq = &qed_iscsi_clear_conn_sq,
1394 .get_stats = &qed_iscsi_stats,
1395 .change_mac = &qed_iscsi_change_mac,
1396 };
1397
1398 const struct qed_iscsi_ops *qed_get_iscsi_ops(void)
1399 {
1400 return &qed_iscsi_ops_pass;
1401 }
1402 EXPORT_SYMBOL(qed_get_iscsi_ops);
1403
1404 void qed_put_iscsi_ops(void)
1405 {
1406 }
1407 EXPORT_SYMBOL(qed_put_iscsi_ops);
Linux with added FPC-III support