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UBUNTU: Ubuntu-4.15.0-96.97
[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/workqueue.h>
48 #include <linux/errno.h>
49 #include <linux/list.h>
50 #include <linux/spinlock.h>
51 #include <linux/qed/qed_iscsi_if.h>
52 #include "qed.h"
53 #include "qed_cxt.h"
54 #include "qed_dev_api.h"
55 #include "qed_hsi.h"
56 #include "qed_hw.h"
57 #include "qed_int.h"
58 #include "qed_iscsi.h"
59 #include "qed_ll2.h"
60 #include "qed_mcp.h"
61 #include "qed_sp.h"
62 #include "qed_sriov.h"
63 #include "qed_reg_addr.h"
64
65 static int
66 qed_iscsi_async_event(struct qed_hwfn *p_hwfn,
67 u8 fw_event_code,
68 u16 echo, union event_ring_data *data, u8 fw_return_code)
69 {
70 if (p_hwfn->p_iscsi_info->event_cb) {
71 struct qed_iscsi_info *p_iscsi = p_hwfn->p_iscsi_info;
72
73 return p_iscsi->event_cb(p_iscsi->event_context,
74 fw_event_code, data);
75 } else {
76 DP_NOTICE(p_hwfn, "iSCSI async completion is not set\n");
77 return -EINVAL;
78 }
79 }
80
81 struct qed_iscsi_conn {
82 struct list_head list_entry;
83 bool free_on_delete;
84
85 u16 conn_id;
86 u32 icid;
87 u32 fw_cid;
88
89 u8 layer_code;
90 u8 offl_flags;
91 u8 connect_mode;
92 u32 initial_ack;
93 dma_addr_t sq_pbl_addr;
94 struct qed_chain r2tq;
95 struct qed_chain xhq;
96 struct qed_chain uhq;
97
98 struct tcp_upload_params *tcp_upload_params_virt_addr;
99 dma_addr_t tcp_upload_params_phys_addr;
100 struct scsi_terminate_extra_params *queue_cnts_virt_addr;
101 dma_addr_t queue_cnts_phys_addr;
102 dma_addr_t syn_phy_addr;
103
104 u16 syn_ip_payload_length;
105 u8 local_mac[6];
106 u8 remote_mac[6];
107 u16 vlan_id;
108 u8 tcp_flags;
109 u8 ip_version;
110 u32 remote_ip[4];
111 u32 local_ip[4];
112 u8 ka_max_probe_cnt;
113 u8 dup_ack_theshold;
114 u32 rcv_next;
115 u32 snd_una;
116 u32 snd_next;
117 u32 snd_max;
118 u32 snd_wnd;
119 u32 rcv_wnd;
120 u32 snd_wl1;
121 u32 cwnd;
122 u32 ss_thresh;
123 u16 srtt;
124 u16 rtt_var;
125 u32 ts_time;
126 u32 ts_recent;
127 u32 ts_recent_age;
128 u32 total_rt;
129 u32 ka_timeout_delta;
130 u32 rt_timeout_delta;
131 u8 dup_ack_cnt;
132 u8 snd_wnd_probe_cnt;
133 u8 ka_probe_cnt;
134 u8 rt_cnt;
135 u32 flow_label;
136 u32 ka_timeout;
137 u32 ka_interval;
138 u32 max_rt_time;
139 u32 initial_rcv_wnd;
140 u8 ttl;
141 u8 tos_or_tc;
142 u16 remote_port;
143 u16 local_port;
144 u16 mss;
145 u8 snd_wnd_scale;
146 u8 rcv_wnd_scale;
147 u32 ts_ticks_per_second;
148 u16 da_timeout_value;
149 u8 ack_frequency;
150
151 u8 update_flag;
152 u8 default_cq;
153 u32 max_seq_size;
154 u32 max_recv_pdu_length;
155 u32 max_send_pdu_length;
156 u32 first_seq_length;
157 u32 exp_stat_sn;
158 u32 stat_sn;
159 u16 physical_q0;
160 u16 physical_q1;
161 u8 abortive_dsconnect;
162 };
163
164 static int
165 qed_sp_iscsi_func_start(struct qed_hwfn *p_hwfn,
166 enum spq_mode comp_mode,
167 struct qed_spq_comp_cb *p_comp_addr,
168 void *event_context, iscsi_event_cb_t async_event_cb)
169 {
170 struct iscsi_init_ramrod_params *p_ramrod = NULL;
171 struct scsi_init_func_queues *p_queue = NULL;
172 struct qed_iscsi_pf_params *p_params = NULL;
173 struct iscsi_spe_func_init *p_init = NULL;
174 struct qed_spq_entry *p_ent = NULL;
175 struct qed_sp_init_data init_data;
176 int rc = 0;
177 u32 dval;
178 u16 val;
179 u8 i;
180
181 /* Get SPQ entry */
182 memset(&init_data, 0, sizeof(init_data));
183 init_data.cid = qed_spq_get_cid(p_hwfn);
184 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
185 init_data.comp_mode = comp_mode;
186 init_data.p_comp_data = p_comp_addr;
187
188 rc = qed_sp_init_request(p_hwfn, &p_ent,
189 ISCSI_RAMROD_CMD_ID_INIT_FUNC,
190 PROTOCOLID_ISCSI, &init_data);
191 if (rc)
192 return rc;
193
194 p_ramrod = &p_ent->ramrod.iscsi_init;
195 p_init = &p_ramrod->iscsi_init_spe;
196 p_params = &p_hwfn->pf_params.iscsi_pf_params;
197 p_queue = &p_init->q_params;
198
199 /* Sanity */
200 if (p_params->num_queues > p_hwfn->hw_info.feat_num[QED_ISCSI_CQ]) {
201 DP_ERR(p_hwfn,
202 "Cannot satisfy CQ amount. Queues requested %d, CQs available %d. Aborting function start\n",
203 p_params->num_queues,
204 p_hwfn->hw_info.feat_num[QED_ISCSI_CQ]);
205 return -EINVAL;
206 }
207
208 SET_FIELD(p_init->hdr.flags,
209 ISCSI_SLOW_PATH_HDR_LAYER_CODE, ISCSI_SLOW_PATH_LAYER_CODE);
210 p_init->hdr.op_code = ISCSI_RAMROD_CMD_ID_INIT_FUNC;
211
212 val = p_params->half_way_close_timeout;
213 p_init->half_way_close_timeout = cpu_to_le16(val);
214 p_init->num_sq_pages_in_ring = p_params->num_sq_pages_in_ring;
215 p_init->num_r2tq_pages_in_ring = p_params->num_r2tq_pages_in_ring;
216 p_init->num_uhq_pages_in_ring = p_params->num_uhq_pages_in_ring;
217 p_init->ooo_enable = p_params->ooo_enable;
218 p_init->ll2_rx_queue_id = p_hwfn->hw_info.resc_start[QED_LL2_QUEUE] +
219 p_params->ll2_ooo_queue_id;
220 p_init->func_params.log_page_size = p_params->log_page_size;
221 val = p_params->num_tasks;
222 p_init->func_params.num_tasks = cpu_to_le16(val);
223 p_init->debug_mode.flags = p_params->debug_mode;
224
225 DMA_REGPAIR_LE(p_queue->glbl_q_params_addr,
226 p_params->glbl_q_params_addr);
227
228 val = p_params->cq_num_entries;
229 p_queue->cq_num_entries = cpu_to_le16(val);
230 val = p_params->cmdq_num_entries;
231 p_queue->cmdq_num_entries = cpu_to_le16(val);
232 p_queue->num_queues = p_params->num_queues;
233 dval = (u8)p_hwfn->hw_info.resc_start[QED_CMDQS_CQS];
234 p_queue->queue_relative_offset = (u8)dval;
235 p_queue->cq_sb_pi = p_params->gl_rq_pi;
236 p_queue->cmdq_sb_pi = p_params->gl_cmd_pi;
237
238 for (i = 0; i < p_params->num_queues; i++) {
239 val = qed_get_igu_sb_id(p_hwfn, i);
240 p_queue->cq_cmdq_sb_num_arr[i] = cpu_to_le16(val);
241 }
242
243 p_queue->bdq_resource_id = (u8)RESC_START(p_hwfn, QED_BDQ);
244
245 DMA_REGPAIR_LE(p_queue->bdq_pbl_base_address[BDQ_ID_RQ],
246 p_params->bdq_pbl_base_addr[BDQ_ID_RQ]);
247 p_queue->bdq_pbl_num_entries[BDQ_ID_RQ] =
248 p_params->bdq_pbl_num_entries[BDQ_ID_RQ];
249 val = p_params->bdq_xoff_threshold[BDQ_ID_RQ];
250 p_queue->bdq_xoff_threshold[BDQ_ID_RQ] = cpu_to_le16(val);
251 val = p_params->bdq_xon_threshold[BDQ_ID_RQ];
252 p_queue->bdq_xon_threshold[BDQ_ID_RQ] = cpu_to_le16(val);
253
254 DMA_REGPAIR_LE(p_queue->bdq_pbl_base_address[BDQ_ID_IMM_DATA],
255 p_params->bdq_pbl_base_addr[BDQ_ID_IMM_DATA]);
256 p_queue->bdq_pbl_num_entries[BDQ_ID_IMM_DATA] =
257 p_params->bdq_pbl_num_entries[BDQ_ID_IMM_DATA];
258 val = p_params->bdq_xoff_threshold[BDQ_ID_IMM_DATA];
259 p_queue->bdq_xoff_threshold[BDQ_ID_IMM_DATA] = cpu_to_le16(val);
260 val = p_params->bdq_xon_threshold[BDQ_ID_IMM_DATA];
261 p_queue->bdq_xon_threshold[BDQ_ID_IMM_DATA] = cpu_to_le16(val);
262 val = p_params->rq_buffer_size;
263 p_queue->rq_buffer_size = cpu_to_le16(val);
264 if (p_params->is_target) {
265 SET_FIELD(p_queue->q_validity,
266 SCSI_INIT_FUNC_QUEUES_RQ_VALID, 1);
267 if (p_queue->bdq_pbl_num_entries[BDQ_ID_IMM_DATA])
268 SET_FIELD(p_queue->q_validity,
269 SCSI_INIT_FUNC_QUEUES_IMM_DATA_VALID, 1);
270 SET_FIELD(p_queue->q_validity,
271 SCSI_INIT_FUNC_QUEUES_CMD_VALID, 1);
272 } else {
273 SET_FIELD(p_queue->q_validity,
274 SCSI_INIT_FUNC_QUEUES_RQ_VALID, 1);
275 }
276 p_ramrod->tcp_init.two_msl_timer = cpu_to_le32(p_params->two_msl_timer);
277 val = p_params->tx_sws_timer;
278 p_ramrod->tcp_init.tx_sws_timer = cpu_to_le16(val);
279 p_ramrod->tcp_init.maxfinrt = p_params->max_fin_rt;
280
281 p_hwfn->p_iscsi_info->event_context = event_context;
282 p_hwfn->p_iscsi_info->event_cb = async_event_cb;
283
284 qed_spq_register_async_cb(p_hwfn, PROTOCOLID_ISCSI,
285 qed_iscsi_async_event);
286
287 return qed_spq_post(p_hwfn, p_ent, NULL);
288 }
289
290 static int qed_sp_iscsi_conn_offload(struct qed_hwfn *p_hwfn,
291 struct qed_iscsi_conn *p_conn,
292 enum spq_mode comp_mode,
293 struct qed_spq_comp_cb *p_comp_addr)
294 {
295 struct iscsi_spe_conn_offload *p_ramrod = NULL;
296 struct tcp_offload_params_opt2 *p_tcp2 = NULL;
297 struct tcp_offload_params *p_tcp = NULL;
298 struct qed_spq_entry *p_ent = NULL;
299 struct qed_sp_init_data init_data;
300 dma_addr_t r2tq_pbl_addr;
301 dma_addr_t xhq_pbl_addr;
302 dma_addr_t uhq_pbl_addr;
303 u16 physical_q;
304 int rc = 0;
305 u32 dval;
306 u16 wval;
307 u8 i;
308 u16 *p;
309
310 /* Get SPQ entry */
311 memset(&init_data, 0, sizeof(init_data));
312 init_data.cid = p_conn->icid;
313 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
314 init_data.comp_mode = comp_mode;
315 init_data.p_comp_data = p_comp_addr;
316
317 rc = qed_sp_init_request(p_hwfn, &p_ent,
318 ISCSI_RAMROD_CMD_ID_OFFLOAD_CONN,
319 PROTOCOLID_ISCSI, &init_data);
320 if (rc)
321 return rc;
322
323 p_ramrod = &p_ent->ramrod.iscsi_conn_offload;
324
325 /* Transmission PQ is the first of the PF */
326 physical_q = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_OFLD);
327 p_conn->physical_q0 = cpu_to_le16(physical_q);
328 p_ramrod->iscsi.physical_q0 = cpu_to_le16(physical_q);
329
330 /* iSCSI Pure-ACK PQ */
331 physical_q = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_ACK);
332 p_conn->physical_q1 = cpu_to_le16(physical_q);
333 p_ramrod->iscsi.physical_q1 = cpu_to_le16(physical_q);
334
335 p_ramrod->hdr.op_code = ISCSI_RAMROD_CMD_ID_OFFLOAD_CONN;
336 SET_FIELD(p_ramrod->hdr.flags, ISCSI_SLOW_PATH_HDR_LAYER_CODE,
337 p_conn->layer_code);
338
339 p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id);
340 p_ramrod->fw_cid = cpu_to_le32(p_conn->icid);
341
342 DMA_REGPAIR_LE(p_ramrod->iscsi.sq_pbl_addr, p_conn->sq_pbl_addr);
343
344 r2tq_pbl_addr = qed_chain_get_pbl_phys(&p_conn->r2tq);
345 DMA_REGPAIR_LE(p_ramrod->iscsi.r2tq_pbl_addr, r2tq_pbl_addr);
346
347 xhq_pbl_addr = qed_chain_get_pbl_phys(&p_conn->xhq);
348 DMA_REGPAIR_LE(p_ramrod->iscsi.xhq_pbl_addr, xhq_pbl_addr);
349
350 uhq_pbl_addr = qed_chain_get_pbl_phys(&p_conn->uhq);
351 DMA_REGPAIR_LE(p_ramrod->iscsi.uhq_pbl_addr, uhq_pbl_addr);
352
353 p_ramrod->iscsi.initial_ack = cpu_to_le32(p_conn->initial_ack);
354 p_ramrod->iscsi.flags = p_conn->offl_flags;
355 p_ramrod->iscsi.default_cq = p_conn->default_cq;
356 p_ramrod->iscsi.stat_sn = cpu_to_le32(p_conn->stat_sn);
357
358 if (!GET_FIELD(p_ramrod->iscsi.flags,
359 ISCSI_CONN_OFFLOAD_PARAMS_TCP_ON_CHIP_1B)) {
360 p_tcp = &p_ramrod->tcp;
361
362 p = (u16 *)p_conn->local_mac;
363 p_tcp->local_mac_addr_hi = swab16(get_unaligned(p));
364 p_tcp->local_mac_addr_mid = swab16(get_unaligned(p + 1));
365 p_tcp->local_mac_addr_lo = swab16(get_unaligned(p + 2));
366
367 p = (u16 *)p_conn->remote_mac;
368 p_tcp->remote_mac_addr_hi = swab16(get_unaligned(p));
369 p_tcp->remote_mac_addr_mid = swab16(get_unaligned(p + 1));
370 p_tcp->remote_mac_addr_lo = swab16(get_unaligned(p + 2));
371
372 p_tcp->vlan_id = cpu_to_le16(p_conn->vlan_id);
373
374 p_tcp->flags = p_conn->tcp_flags;
375 p_tcp->ip_version = p_conn->ip_version;
376 for (i = 0; i < 4; i++) {
377 dval = p_conn->remote_ip[i];
378 p_tcp->remote_ip[i] = cpu_to_le32(dval);
379 dval = p_conn->local_ip[i];
380 p_tcp->local_ip[i] = cpu_to_le32(dval);
381 }
382 p_tcp->ka_max_probe_cnt = p_conn->ka_max_probe_cnt;
383 p_tcp->dup_ack_theshold = p_conn->dup_ack_theshold;
384
385 p_tcp->rcv_next = cpu_to_le32(p_conn->rcv_next);
386 p_tcp->snd_una = cpu_to_le32(p_conn->snd_una);
387 p_tcp->snd_next = cpu_to_le32(p_conn->snd_next);
388 p_tcp->snd_max = cpu_to_le32(p_conn->snd_max);
389 p_tcp->snd_wnd = cpu_to_le32(p_conn->snd_wnd);
390 p_tcp->rcv_wnd = cpu_to_le32(p_conn->rcv_wnd);
391 p_tcp->snd_wl1 = cpu_to_le32(p_conn->snd_wl1);
392 p_tcp->cwnd = cpu_to_le32(p_conn->cwnd);
393 p_tcp->ss_thresh = cpu_to_le32(p_conn->ss_thresh);
394 p_tcp->srtt = cpu_to_le16(p_conn->srtt);
395 p_tcp->rtt_var = cpu_to_le16(p_conn->rtt_var);
396 p_tcp->ts_recent = cpu_to_le32(p_conn->ts_recent);
397 p_tcp->ts_recent_age = cpu_to_le32(p_conn->ts_recent_age);
398 p_tcp->total_rt = cpu_to_le32(p_conn->total_rt);
399 dval = p_conn->ka_timeout_delta;
400 p_tcp->ka_timeout_delta = cpu_to_le32(dval);
401 dval = p_conn->rt_timeout_delta;
402 p_tcp->rt_timeout_delta = cpu_to_le32(dval);
403 p_tcp->dup_ack_cnt = p_conn->dup_ack_cnt;
404 p_tcp->snd_wnd_probe_cnt = p_conn->snd_wnd_probe_cnt;
405 p_tcp->ka_probe_cnt = p_conn->ka_probe_cnt;
406 p_tcp->rt_cnt = p_conn->rt_cnt;
407 p_tcp->flow_label = cpu_to_le32(p_conn->flow_label);
408 p_tcp->ka_timeout = cpu_to_le32(p_conn->ka_timeout);
409 p_tcp->ka_interval = cpu_to_le32(p_conn->ka_interval);
410 p_tcp->max_rt_time = cpu_to_le32(p_conn->max_rt_time);
411 dval = p_conn->initial_rcv_wnd;
412 p_tcp->initial_rcv_wnd = cpu_to_le32(dval);
413 p_tcp->ttl = p_conn->ttl;
414 p_tcp->tos_or_tc = p_conn->tos_or_tc;
415 p_tcp->remote_port = cpu_to_le16(p_conn->remote_port);
416 p_tcp->local_port = cpu_to_le16(p_conn->local_port);
417 p_tcp->mss = cpu_to_le16(p_conn->mss);
418 p_tcp->snd_wnd_scale = p_conn->snd_wnd_scale;
419 p_tcp->rcv_wnd_scale = p_conn->rcv_wnd_scale;
420 wval = p_conn->da_timeout_value;
421 p_tcp->da_timeout_value = cpu_to_le16(wval);
422 p_tcp->ack_frequency = p_conn->ack_frequency;
423 p_tcp->connect_mode = p_conn->connect_mode;
424 } else {
425 p_tcp2 =
426 &((struct iscsi_spe_conn_offload_option2 *)p_ramrod)->tcp;
427
428 p = (u16 *)p_conn->local_mac;
429 p_tcp2->local_mac_addr_hi = swab16(get_unaligned(p));
430 p_tcp2->local_mac_addr_mid = swab16(get_unaligned(p + 1));
431 p_tcp2->local_mac_addr_lo = swab16(get_unaligned(p + 2));
432
433 p = (u16 *)p_conn->remote_mac;
434 p_tcp2->remote_mac_addr_hi = swab16(get_unaligned(p));
435 p_tcp2->remote_mac_addr_mid = swab16(get_unaligned(p + 1));
436 p_tcp2->remote_mac_addr_lo = swab16(get_unaligned(p + 2));
437
438 p_tcp2->vlan_id = cpu_to_le16(p_conn->vlan_id);
439 p_tcp2->flags = p_conn->tcp_flags;
440
441 p_tcp2->ip_version = p_conn->ip_version;
442 for (i = 0; i < 4; i++) {
443 dval = p_conn->remote_ip[i];
444 p_tcp2->remote_ip[i] = cpu_to_le32(dval);
445 dval = p_conn->local_ip[i];
446 p_tcp2->local_ip[i] = cpu_to_le32(dval);
447 }
448
449 p_tcp2->flow_label = cpu_to_le32(p_conn->flow_label);
450 p_tcp2->ttl = p_conn->ttl;
451 p_tcp2->tos_or_tc = p_conn->tos_or_tc;
452 p_tcp2->remote_port = cpu_to_le16(p_conn->remote_port);
453 p_tcp2->local_port = cpu_to_le16(p_conn->local_port);
454 p_tcp2->mss = cpu_to_le16(p_conn->mss);
455 p_tcp2->rcv_wnd_scale = p_conn->rcv_wnd_scale;
456 p_tcp2->connect_mode = p_conn->connect_mode;
457 wval = p_conn->syn_ip_payload_length;
458 p_tcp2->syn_ip_payload_length = cpu_to_le16(wval);
459 p_tcp2->syn_phy_addr_lo = DMA_LO_LE(p_conn->syn_phy_addr);
460 p_tcp2->syn_phy_addr_hi = DMA_HI_LE(p_conn->syn_phy_addr);
461 }
462
463 return qed_spq_post(p_hwfn, p_ent, NULL);
464 }
465
466 static int qed_sp_iscsi_conn_update(struct qed_hwfn *p_hwfn,
467 struct qed_iscsi_conn *p_conn,
468 enum spq_mode comp_mode,
469 struct qed_spq_comp_cb *p_comp_addr)
470 {
471 struct iscsi_conn_update_ramrod_params *p_ramrod = NULL;
472 struct qed_spq_entry *p_ent = NULL;
473 struct qed_sp_init_data init_data;
474 int rc = -EINVAL;
475 u32 dval;
476
477 /* Get SPQ entry */
478 memset(&init_data, 0, sizeof(init_data));
479 init_data.cid = p_conn->icid;
480 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
481 init_data.comp_mode = comp_mode;
482 init_data.p_comp_data = p_comp_addr;
483
484 rc = qed_sp_init_request(p_hwfn, &p_ent,
485 ISCSI_RAMROD_CMD_ID_UPDATE_CONN,
486 PROTOCOLID_ISCSI, &init_data);
487 if (rc)
488 return rc;
489
490 p_ramrod = &p_ent->ramrod.iscsi_conn_update;
491 p_ramrod->hdr.op_code = ISCSI_RAMROD_CMD_ID_UPDATE_CONN;
492 SET_FIELD(p_ramrod->hdr.flags,
493 ISCSI_SLOW_PATH_HDR_LAYER_CODE, p_conn->layer_code);
494
495 p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id);
496 p_ramrod->fw_cid = cpu_to_le32(p_conn->icid);
497 p_ramrod->flags = p_conn->update_flag;
498 p_ramrod->max_seq_size = cpu_to_le32(p_conn->max_seq_size);
499 dval = p_conn->max_recv_pdu_length;
500 p_ramrod->max_recv_pdu_length = cpu_to_le32(dval);
501 dval = p_conn->max_send_pdu_length;
502 p_ramrod->max_send_pdu_length = cpu_to_le32(dval);
503 dval = p_conn->first_seq_length;
504 p_ramrod->first_seq_length = cpu_to_le32(dval);
505 p_ramrod->exp_stat_sn = cpu_to_le32(p_conn->exp_stat_sn);
506
507 return qed_spq_post(p_hwfn, p_ent, NULL);
508 }
509
510 static int
511 qed_sp_iscsi_mac_update(struct qed_hwfn *p_hwfn,
512 struct qed_iscsi_conn *p_conn,
513 enum spq_mode comp_mode,
514 struct qed_spq_comp_cb *p_comp_addr)
515 {
516 struct iscsi_spe_conn_mac_update *p_ramrod = NULL;
517 struct qed_spq_entry *p_ent = NULL;
518 struct qed_sp_init_data init_data;
519 int rc = -EINVAL;
520 u8 ucval;
521
522 /* Get SPQ entry */
523 memset(&init_data, 0, sizeof(init_data));
524 init_data.cid = p_conn->icid;
525 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
526 init_data.comp_mode = comp_mode;
527 init_data.p_comp_data = p_comp_addr;
528
529 rc = qed_sp_init_request(p_hwfn, &p_ent,
530 ISCSI_RAMROD_CMD_ID_MAC_UPDATE,
531 PROTOCOLID_ISCSI, &init_data);
532 if (rc)
533 return rc;
534
535 p_ramrod = &p_ent->ramrod.iscsi_conn_mac_update;
536 p_ramrod->hdr.op_code = ISCSI_RAMROD_CMD_ID_MAC_UPDATE;
537 SET_FIELD(p_ramrod->hdr.flags,
538 ISCSI_SLOW_PATH_HDR_LAYER_CODE, p_conn->layer_code);
539
540 p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id);
541 p_ramrod->fw_cid = cpu_to_le32(p_conn->icid);
542 ucval = p_conn->remote_mac[1];
543 ((u8 *)(&p_ramrod->remote_mac_addr_hi))[0] = ucval;
544 ucval = p_conn->remote_mac[0];
545 ((u8 *)(&p_ramrod->remote_mac_addr_hi))[1] = ucval;
546 ucval = p_conn->remote_mac[3];
547 ((u8 *)(&p_ramrod->remote_mac_addr_mid))[0] = ucval;
548 ucval = p_conn->remote_mac[2];
549 ((u8 *)(&p_ramrod->remote_mac_addr_mid))[1] = ucval;
550 ucval = p_conn->remote_mac[5];
551 ((u8 *)(&p_ramrod->remote_mac_addr_lo))[0] = ucval;
552 ucval = p_conn->remote_mac[4];
553 ((u8 *)(&p_ramrod->remote_mac_addr_lo))[1] = ucval;
554
555 return qed_spq_post(p_hwfn, p_ent, NULL);
556 }
557
558 static int qed_sp_iscsi_conn_terminate(struct qed_hwfn *p_hwfn,
559 struct qed_iscsi_conn *p_conn,
560 enum spq_mode comp_mode,
561 struct qed_spq_comp_cb *p_comp_addr)
562 {
563 struct iscsi_spe_conn_termination *p_ramrod = NULL;
564 struct qed_spq_entry *p_ent = NULL;
565 struct qed_sp_init_data init_data;
566 int rc = -EINVAL;
567
568 /* Get SPQ entry */
569 memset(&init_data, 0, sizeof(init_data));
570 init_data.cid = p_conn->icid;
571 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
572 init_data.comp_mode = comp_mode;
573 init_data.p_comp_data = p_comp_addr;
574
575 rc = qed_sp_init_request(p_hwfn, &p_ent,
576 ISCSI_RAMROD_CMD_ID_TERMINATION_CONN,
577 PROTOCOLID_ISCSI, &init_data);
578 if (rc)
579 return rc;
580
581 p_ramrod = &p_ent->ramrod.iscsi_conn_terminate;
582 p_ramrod->hdr.op_code = ISCSI_RAMROD_CMD_ID_TERMINATION_CONN;
583 SET_FIELD(p_ramrod->hdr.flags,
584 ISCSI_SLOW_PATH_HDR_LAYER_CODE, p_conn->layer_code);
585
586 p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id);
587 p_ramrod->fw_cid = cpu_to_le32(p_conn->icid);
588 p_ramrod->abortive = p_conn->abortive_dsconnect;
589
590 DMA_REGPAIR_LE(p_ramrod->query_params_addr,
591 p_conn->tcp_upload_params_phys_addr);
592 DMA_REGPAIR_LE(p_ramrod->queue_cnts_addr, p_conn->queue_cnts_phys_addr);
593
594 return qed_spq_post(p_hwfn, p_ent, NULL);
595 }
596
597 static int qed_sp_iscsi_conn_clear_sq(struct qed_hwfn *p_hwfn,
598 struct qed_iscsi_conn *p_conn,
599 enum spq_mode comp_mode,
600 struct qed_spq_comp_cb *p_comp_addr)
601 {
602 struct iscsi_slow_path_hdr *p_ramrod = NULL;
603 struct qed_spq_entry *p_ent = NULL;
604 struct qed_sp_init_data init_data;
605 int rc = -EINVAL;
606
607 /* Get SPQ entry */
608 memset(&init_data, 0, sizeof(init_data));
609 init_data.cid = p_conn->icid;
610 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
611 init_data.comp_mode = comp_mode;
612 init_data.p_comp_data = p_comp_addr;
613
614 rc = qed_sp_init_request(p_hwfn, &p_ent,
615 ISCSI_RAMROD_CMD_ID_CLEAR_SQ,
616 PROTOCOLID_ISCSI, &init_data);
617 if (rc)
618 return rc;
619
620 p_ramrod = &p_ent->ramrod.iscsi_empty;
621 p_ramrod->op_code = ISCSI_RAMROD_CMD_ID_CLEAR_SQ;
622 SET_FIELD(p_ramrod->flags,
623 ISCSI_SLOW_PATH_HDR_LAYER_CODE, p_conn->layer_code);
624
625 return qed_spq_post(p_hwfn, p_ent, NULL);
626 }
627
628 static int qed_sp_iscsi_func_stop(struct qed_hwfn *p_hwfn,
629 enum spq_mode comp_mode,
630 struct qed_spq_comp_cb *p_comp_addr)
631 {
632 struct iscsi_spe_func_dstry *p_ramrod = NULL;
633 struct qed_spq_entry *p_ent = NULL;
634 struct qed_sp_init_data init_data;
635 int rc = 0;
636
637 /* Get SPQ entry */
638 memset(&init_data, 0, sizeof(init_data));
639 init_data.cid = qed_spq_get_cid(p_hwfn);
640 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
641 init_data.comp_mode = comp_mode;
642 init_data.p_comp_data = p_comp_addr;
643
644 rc = qed_sp_init_request(p_hwfn, &p_ent,
645 ISCSI_RAMROD_CMD_ID_DESTROY_FUNC,
646 PROTOCOLID_ISCSI, &init_data);
647 if (rc)
648 return rc;
649
650 p_ramrod = &p_ent->ramrod.iscsi_destroy;
651 p_ramrod->hdr.op_code = ISCSI_RAMROD_CMD_ID_DESTROY_FUNC;
652
653 rc = qed_spq_post(p_hwfn, p_ent, NULL);
654
655 qed_spq_unregister_async_cb(p_hwfn, PROTOCOLID_ISCSI);
656 return rc;
657 }
658
659 static void __iomem *qed_iscsi_get_db_addr(struct qed_hwfn *p_hwfn, u32 cid)
660 {
661 return (u8 __iomem *)p_hwfn->doorbells +
662 qed_db_addr(cid, DQ_DEMS_LEGACY);
663 }
664
665 static void __iomem *qed_iscsi_get_primary_bdq_prod(struct qed_hwfn *p_hwfn,
666 u8 bdq_id)
667 {
668 if (RESC_NUM(p_hwfn, QED_BDQ)) {
669 return (u8 __iomem *)p_hwfn->regview +
670 GTT_BAR0_MAP_REG_MSDM_RAM +
671 MSTORM_SCSI_BDQ_EXT_PROD_OFFSET(RESC_START(p_hwfn,
672 QED_BDQ),
673 bdq_id);
674 } else {
675 DP_NOTICE(p_hwfn, "BDQ is not allocated!\n");
676 return NULL;
677 }
678 }
679
680 static void __iomem *qed_iscsi_get_secondary_bdq_prod(struct qed_hwfn *p_hwfn,
681 u8 bdq_id)
682 {
683 if (RESC_NUM(p_hwfn, QED_BDQ)) {
684 return (u8 __iomem *)p_hwfn->regview +
685 GTT_BAR0_MAP_REG_TSDM_RAM +
686 TSTORM_SCSI_BDQ_EXT_PROD_OFFSET(RESC_START(p_hwfn,
687 QED_BDQ),
688 bdq_id);
689 } else {
690 DP_NOTICE(p_hwfn, "BDQ is not allocated!\n");
691 return NULL;
692 }
693 }
694
695 static int qed_iscsi_setup_connection(struct qed_hwfn *p_hwfn,
696 struct qed_iscsi_conn *p_conn)
697 {
698 if (!p_conn->queue_cnts_virt_addr)
699 goto nomem;
700 memset(p_conn->queue_cnts_virt_addr, 0,
701 sizeof(*p_conn->queue_cnts_virt_addr));
702
703 if (!p_conn->tcp_upload_params_virt_addr)
704 goto nomem;
705 memset(p_conn->tcp_upload_params_virt_addr, 0,
706 sizeof(*p_conn->tcp_upload_params_virt_addr));
707
708 if (!p_conn->r2tq.p_virt_addr)
709 goto nomem;
710 qed_chain_pbl_zero_mem(&p_conn->r2tq);
711
712 if (!p_conn->uhq.p_virt_addr)
713 goto nomem;
714 qed_chain_pbl_zero_mem(&p_conn->uhq);
715
716 if (!p_conn->xhq.p_virt_addr)
717 goto nomem;
718 qed_chain_pbl_zero_mem(&p_conn->xhq);
719
720 return 0;
721 nomem:
722 return -ENOMEM;
723 }
724
725 static int qed_iscsi_allocate_connection(struct qed_hwfn *p_hwfn,
726 struct qed_iscsi_conn **p_out_conn)
727 {
728 u16 uhq_num_elements = 0, xhq_num_elements = 0, r2tq_num_elements = 0;
729 struct scsi_terminate_extra_params *p_q_cnts = NULL;
730 struct qed_iscsi_pf_params *p_params = NULL;
731 struct tcp_upload_params *p_tcp = NULL;
732 struct qed_iscsi_conn *p_conn = NULL;
733 int rc = 0;
734
735 /* Try finding a free connection that can be used */
736 spin_lock_bh(&p_hwfn->p_iscsi_info->lock);
737 if (!list_empty(&p_hwfn->p_iscsi_info->free_list))
738 p_conn = list_first_entry(&p_hwfn->p_iscsi_info->free_list,
739 struct qed_iscsi_conn, list_entry);
740 if (p_conn) {
741 list_del(&p_conn->list_entry);
742 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock);
743 *p_out_conn = p_conn;
744 return 0;
745 }
746 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock);
747
748 /* Need to allocate a new connection */
749 p_params = &p_hwfn->pf_params.iscsi_pf_params;
750
751 p_conn = kzalloc(sizeof(*p_conn), GFP_KERNEL);
752 if (!p_conn)
753 return -ENOMEM;
754
755 p_q_cnts = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev,
756 sizeof(*p_q_cnts),
757 &p_conn->queue_cnts_phys_addr,
758 GFP_KERNEL);
759 if (!p_q_cnts)
760 goto nomem_queue_cnts_param;
761 p_conn->queue_cnts_virt_addr = p_q_cnts;
762
763 p_tcp = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev,
764 sizeof(*p_tcp),
765 &p_conn->tcp_upload_params_phys_addr,
766 GFP_KERNEL);
767 if (!p_tcp)
768 goto nomem_upload_param;
769 p_conn->tcp_upload_params_virt_addr = p_tcp;
770
771 r2tq_num_elements = p_params->num_r2tq_pages_in_ring *
772 QED_CHAIN_PAGE_SIZE / 0x80;
773 rc = qed_chain_alloc(p_hwfn->cdev,
774 QED_CHAIN_USE_TO_CONSUME_PRODUCE,
775 QED_CHAIN_MODE_PBL,
776 QED_CHAIN_CNT_TYPE_U16,
777 r2tq_num_elements, 0x80, &p_conn->r2tq, NULL);
778 if (rc)
779 goto nomem_r2tq;
780
781 uhq_num_elements = p_params->num_uhq_pages_in_ring *
782 QED_CHAIN_PAGE_SIZE / sizeof(struct iscsi_uhqe);
783 rc = qed_chain_alloc(p_hwfn->cdev,
784 QED_CHAIN_USE_TO_CONSUME_PRODUCE,
785 QED_CHAIN_MODE_PBL,
786 QED_CHAIN_CNT_TYPE_U16,
787 uhq_num_elements,
788 sizeof(struct iscsi_uhqe), &p_conn->uhq, NULL);
789 if (rc)
790 goto nomem_uhq;
791
792 xhq_num_elements = uhq_num_elements;
793 rc = qed_chain_alloc(p_hwfn->cdev,
794 QED_CHAIN_USE_TO_CONSUME_PRODUCE,
795 QED_CHAIN_MODE_PBL,
796 QED_CHAIN_CNT_TYPE_U16,
797 xhq_num_elements,
798 sizeof(struct iscsi_xhqe), &p_conn->xhq, NULL);
799 if (rc)
800 goto nomem;
801
802 p_conn->free_on_delete = true;
803 *p_out_conn = p_conn;
804 return 0;
805
806 nomem:
807 qed_chain_free(p_hwfn->cdev, &p_conn->uhq);
808 nomem_uhq:
809 qed_chain_free(p_hwfn->cdev, &p_conn->r2tq);
810 nomem_r2tq:
811 dma_free_coherent(&p_hwfn->cdev->pdev->dev,
812 sizeof(struct tcp_upload_params),
813 p_conn->tcp_upload_params_virt_addr,
814 p_conn->tcp_upload_params_phys_addr);
815 nomem_upload_param:
816 dma_free_coherent(&p_hwfn->cdev->pdev->dev,
817 sizeof(struct scsi_terminate_extra_params),
818 p_conn->queue_cnts_virt_addr,
819 p_conn->queue_cnts_phys_addr);
820 nomem_queue_cnts_param:
821 kfree(p_conn);
822
823 return -ENOMEM;
824 }
825
826 static int qed_iscsi_acquire_connection(struct qed_hwfn *p_hwfn,
827 struct qed_iscsi_conn *p_in_conn,
828 struct qed_iscsi_conn **p_out_conn)
829 {
830 struct qed_iscsi_conn *p_conn = NULL;
831 int rc = 0;
832 u32 icid;
833
834 spin_lock_bh(&p_hwfn->p_iscsi_info->lock);
835 rc = qed_cxt_acquire_cid(p_hwfn, PROTOCOLID_ISCSI, &icid);
836 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock);
837 if (rc)
838 return rc;
839
840 /* Use input connection or allocate a new one */
841 if (p_in_conn)
842 p_conn = p_in_conn;
843 else
844 rc = qed_iscsi_allocate_connection(p_hwfn, &p_conn);
845
846 if (!rc)
847 rc = qed_iscsi_setup_connection(p_hwfn, p_conn);
848
849 if (rc) {
850 spin_lock_bh(&p_hwfn->p_iscsi_info->lock);
851 qed_cxt_release_cid(p_hwfn, icid);
852 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock);
853 return rc;
854 }
855
856 p_conn->icid = icid;
857 p_conn->conn_id = (u16)icid;
858 p_conn->fw_cid = (p_hwfn->hw_info.opaque_fid << 16) | icid;
859
860 *p_out_conn = p_conn;
861
862 return rc;
863 }
864
865 static void qed_iscsi_release_connection(struct qed_hwfn *p_hwfn,
866 struct qed_iscsi_conn *p_conn)
867 {
868 spin_lock_bh(&p_hwfn->p_iscsi_info->lock);
869 list_add_tail(&p_conn->list_entry, &p_hwfn->p_iscsi_info->free_list);
870 qed_cxt_release_cid(p_hwfn, p_conn->icid);
871 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock);
872 }
873
874 void qed_iscsi_free_connection(struct qed_hwfn *p_hwfn,
875 struct qed_iscsi_conn *p_conn)
876 {
877 qed_chain_free(p_hwfn->cdev, &p_conn->xhq);
878 qed_chain_free(p_hwfn->cdev, &p_conn->uhq);
879 qed_chain_free(p_hwfn->cdev, &p_conn->r2tq);
880 dma_free_coherent(&p_hwfn->cdev->pdev->dev,
881 sizeof(struct tcp_upload_params),
882 p_conn->tcp_upload_params_virt_addr,
883 p_conn->tcp_upload_params_phys_addr);
884 dma_free_coherent(&p_hwfn->cdev->pdev->dev,
885 sizeof(struct scsi_terminate_extra_params),
886 p_conn->queue_cnts_virt_addr,
887 p_conn->queue_cnts_phys_addr);
888 kfree(p_conn);
889 }
890
891 int qed_iscsi_alloc(struct qed_hwfn *p_hwfn)
892 {
893 struct qed_iscsi_info *p_iscsi_info;
894
895 p_iscsi_info = kzalloc(sizeof(*p_iscsi_info), GFP_KERNEL);
896 if (!p_iscsi_info)
897 return -ENOMEM;
898
899 INIT_LIST_HEAD(&p_iscsi_info->free_list);
900
901 p_hwfn->p_iscsi_info = p_iscsi_info;
902 return 0;
903 }
904
905 void qed_iscsi_setup(struct qed_hwfn *p_hwfn)
906 {
907 spin_lock_init(&p_hwfn->p_iscsi_info->lock);
908 }
909
910 void qed_iscsi_free(struct qed_hwfn *p_hwfn)
911 {
912 struct qed_iscsi_conn *p_conn = NULL;
913
914 if (!p_hwfn->p_iscsi_info)
915 return;
916
917 while (!list_empty(&p_hwfn->p_iscsi_info->free_list)) {
918 p_conn = list_first_entry(&p_hwfn->p_iscsi_info->free_list,
919 struct qed_iscsi_conn, list_entry);
920 if (p_conn) {
921 list_del(&p_conn->list_entry);
922 qed_iscsi_free_connection(p_hwfn, p_conn);
923 }
924 }
925
926 kfree(p_hwfn->p_iscsi_info);
927 p_hwfn->p_iscsi_info = NULL;
928 }
929
930 static void _qed_iscsi_get_tstats(struct qed_hwfn *p_hwfn,
931 struct qed_ptt *p_ptt,
932 struct qed_iscsi_stats *p_stats)
933 {
934 struct tstorm_iscsi_stats_drv tstats;
935 u32 tstats_addr;
936
937 memset(&tstats, 0, sizeof(tstats));
938 tstats_addr = BAR0_MAP_REG_TSDM_RAM +
939 TSTORM_ISCSI_RX_STATS_OFFSET(p_hwfn->rel_pf_id);
940 qed_memcpy_from(p_hwfn, p_ptt, &tstats, tstats_addr, sizeof(tstats));
941
942 p_stats->iscsi_rx_bytes_cnt =
943 HILO_64_REGPAIR(tstats.iscsi_rx_bytes_cnt);
944 p_stats->iscsi_rx_packet_cnt =
945 HILO_64_REGPAIR(tstats.iscsi_rx_packet_cnt);
946 p_stats->iscsi_rx_new_ooo_isle_events_cnt =
947 HILO_64_REGPAIR(tstats.iscsi_rx_new_ooo_isle_events_cnt);
948 p_stats->iscsi_cmdq_threshold_cnt =
949 le32_to_cpu(tstats.iscsi_cmdq_threshold_cnt);
950 p_stats->iscsi_rq_threshold_cnt =
951 le32_to_cpu(tstats.iscsi_rq_threshold_cnt);
952 p_stats->iscsi_immq_threshold_cnt =
953 le32_to_cpu(tstats.iscsi_immq_threshold_cnt);
954 }
955
956 static void _qed_iscsi_get_mstats(struct qed_hwfn *p_hwfn,
957 struct qed_ptt *p_ptt,
958 struct qed_iscsi_stats *p_stats)
959 {
960 struct mstorm_iscsi_stats_drv mstats;
961 u32 mstats_addr;
962
963 memset(&mstats, 0, sizeof(mstats));
964 mstats_addr = BAR0_MAP_REG_MSDM_RAM +
965 MSTORM_ISCSI_RX_STATS_OFFSET(p_hwfn->rel_pf_id);
966 qed_memcpy_from(p_hwfn, p_ptt, &mstats, mstats_addr, sizeof(mstats));
967
968 p_stats->iscsi_rx_dropped_pdus_task_not_valid =
969 HILO_64_REGPAIR(mstats.iscsi_rx_dropped_pdus_task_not_valid);
970 }
971
972 static void _qed_iscsi_get_ustats(struct qed_hwfn *p_hwfn,
973 struct qed_ptt *p_ptt,
974 struct qed_iscsi_stats *p_stats)
975 {
976 struct ustorm_iscsi_stats_drv ustats;
977 u32 ustats_addr;
978
979 memset(&ustats, 0, sizeof(ustats));
980 ustats_addr = BAR0_MAP_REG_USDM_RAM +
981 USTORM_ISCSI_RX_STATS_OFFSET(p_hwfn->rel_pf_id);
982 qed_memcpy_from(p_hwfn, p_ptt, &ustats, ustats_addr, sizeof(ustats));
983
984 p_stats->iscsi_rx_data_pdu_cnt =
985 HILO_64_REGPAIR(ustats.iscsi_rx_data_pdu_cnt);
986 p_stats->iscsi_rx_r2t_pdu_cnt =
987 HILO_64_REGPAIR(ustats.iscsi_rx_r2t_pdu_cnt);
988 p_stats->iscsi_rx_total_pdu_cnt =
989 HILO_64_REGPAIR(ustats.iscsi_rx_total_pdu_cnt);
990 }
991
992 static void _qed_iscsi_get_xstats(struct qed_hwfn *p_hwfn,
993 struct qed_ptt *p_ptt,
994 struct qed_iscsi_stats *p_stats)
995 {
996 struct xstorm_iscsi_stats_drv xstats;
997 u32 xstats_addr;
998
999 memset(&xstats, 0, sizeof(xstats));
1000 xstats_addr = BAR0_MAP_REG_XSDM_RAM +
1001 XSTORM_ISCSI_TX_STATS_OFFSET(p_hwfn->rel_pf_id);
1002 qed_memcpy_from(p_hwfn, p_ptt, &xstats, xstats_addr, sizeof(xstats));
1003
1004 p_stats->iscsi_tx_go_to_slow_start_event_cnt =
1005 HILO_64_REGPAIR(xstats.iscsi_tx_go_to_slow_start_event_cnt);
1006 p_stats->iscsi_tx_fast_retransmit_event_cnt =
1007 HILO_64_REGPAIR(xstats.iscsi_tx_fast_retransmit_event_cnt);
1008 }
1009
1010 static void _qed_iscsi_get_ystats(struct qed_hwfn *p_hwfn,
1011 struct qed_ptt *p_ptt,
1012 struct qed_iscsi_stats *p_stats)
1013 {
1014 struct ystorm_iscsi_stats_drv ystats;
1015 u32 ystats_addr;
1016
1017 memset(&ystats, 0, sizeof(ystats));
1018 ystats_addr = BAR0_MAP_REG_YSDM_RAM +
1019 YSTORM_ISCSI_TX_STATS_OFFSET(p_hwfn->rel_pf_id);
1020 qed_memcpy_from(p_hwfn, p_ptt, &ystats, ystats_addr, sizeof(ystats));
1021
1022 p_stats->iscsi_tx_data_pdu_cnt =
1023 HILO_64_REGPAIR(ystats.iscsi_tx_data_pdu_cnt);
1024 p_stats->iscsi_tx_r2t_pdu_cnt =
1025 HILO_64_REGPAIR(ystats.iscsi_tx_r2t_pdu_cnt);
1026 p_stats->iscsi_tx_total_pdu_cnt =
1027 HILO_64_REGPAIR(ystats.iscsi_tx_total_pdu_cnt);
1028 }
1029
1030 static void _qed_iscsi_get_pstats(struct qed_hwfn *p_hwfn,
1031 struct qed_ptt *p_ptt,
1032 struct qed_iscsi_stats *p_stats)
1033 {
1034 struct pstorm_iscsi_stats_drv pstats;
1035 u32 pstats_addr;
1036
1037 memset(&pstats, 0, sizeof(pstats));
1038 pstats_addr = BAR0_MAP_REG_PSDM_RAM +
1039 PSTORM_ISCSI_TX_STATS_OFFSET(p_hwfn->rel_pf_id);
1040 qed_memcpy_from(p_hwfn, p_ptt, &pstats, pstats_addr, sizeof(pstats));
1041
1042 p_stats->iscsi_tx_bytes_cnt =
1043 HILO_64_REGPAIR(pstats.iscsi_tx_bytes_cnt);
1044 p_stats->iscsi_tx_packet_cnt =
1045 HILO_64_REGPAIR(pstats.iscsi_tx_packet_cnt);
1046 }
1047
1048 static int qed_iscsi_get_stats(struct qed_hwfn *p_hwfn,
1049 struct qed_iscsi_stats *stats)
1050 {
1051 struct qed_ptt *p_ptt;
1052
1053 memset(stats, 0, sizeof(*stats));
1054
1055 p_ptt = qed_ptt_acquire(p_hwfn);
1056 if (!p_ptt) {
1057 DP_ERR(p_hwfn, "Failed to acquire ptt\n");
1058 return -EAGAIN;
1059 }
1060
1061 _qed_iscsi_get_tstats(p_hwfn, p_ptt, stats);
1062 _qed_iscsi_get_mstats(p_hwfn, p_ptt, stats);
1063 _qed_iscsi_get_ustats(p_hwfn, p_ptt, stats);
1064
1065 _qed_iscsi_get_xstats(p_hwfn, p_ptt, stats);
1066 _qed_iscsi_get_ystats(p_hwfn, p_ptt, stats);
1067 _qed_iscsi_get_pstats(p_hwfn, p_ptt, stats);
1068
1069 qed_ptt_release(p_hwfn, p_ptt);
1070
1071 return 0;
1072 }
1073
1074 struct qed_hash_iscsi_con {
1075 struct hlist_node node;
1076 struct qed_iscsi_conn *con;
1077 };
1078
1079 static int qed_fill_iscsi_dev_info(struct qed_dev *cdev,
1080 struct qed_dev_iscsi_info *info)
1081 {
1082 struct qed_hwfn *hwfn = QED_LEADING_HWFN(cdev);
1083
1084 int rc;
1085
1086 memset(info, 0, sizeof(*info));
1087 rc = qed_fill_dev_info(cdev, &info->common);
1088
1089 info->primary_dbq_rq_addr =
1090 qed_iscsi_get_primary_bdq_prod(hwfn, BDQ_ID_RQ);
1091 info->secondary_bdq_rq_addr =
1092 qed_iscsi_get_secondary_bdq_prod(hwfn, BDQ_ID_RQ);
1093
1094 info->num_cqs = FEAT_NUM(hwfn, QED_ISCSI_CQ);
1095
1096 return rc;
1097 }
1098
1099 static void qed_register_iscsi_ops(struct qed_dev *cdev,
1100 struct qed_iscsi_cb_ops *ops, void *cookie)
1101 {
1102 cdev->protocol_ops.iscsi = ops;
1103 cdev->ops_cookie = cookie;
1104 }
1105
1106 static struct qed_hash_iscsi_con *qed_iscsi_get_hash(struct qed_dev *cdev,
1107 u32 handle)
1108 {
1109 struct qed_hash_iscsi_con *hash_con = NULL;
1110
1111 if (!(cdev->flags & QED_FLAG_STORAGE_STARTED))
1112 return NULL;
1113
1114 hash_for_each_possible(cdev->connections, hash_con, node, handle) {
1115 if (hash_con->con->icid == handle)
1116 break;
1117 }
1118
1119 if (!hash_con || (hash_con->con->icid != handle))
1120 return NULL;
1121
1122 return hash_con;
1123 }
1124
1125 static int qed_iscsi_stop(struct qed_dev *cdev)
1126 {
1127 int rc;
1128
1129 if (!(cdev->flags & QED_FLAG_STORAGE_STARTED)) {
1130 DP_NOTICE(cdev, "iscsi already stopped\n");
1131 return 0;
1132 }
1133
1134 if (!hash_empty(cdev->connections)) {
1135 DP_NOTICE(cdev,
1136 "Can't stop iscsi - not all connections were returned\n");
1137 return -EINVAL;
1138 }
1139
1140 /* Stop the iscsi */
1141 rc = qed_sp_iscsi_func_stop(QED_LEADING_HWFN(cdev),
1142 QED_SPQ_MODE_EBLOCK, NULL);
1143 cdev->flags &= ~QED_FLAG_STORAGE_STARTED;
1144
1145 return rc;
1146 }
1147
1148 static int qed_iscsi_start(struct qed_dev *cdev,
1149 struct qed_iscsi_tid *tasks,
1150 void *event_context,
1151 iscsi_event_cb_t async_event_cb)
1152 {
1153 int rc;
1154 struct qed_tid_mem *tid_info;
1155
1156 if (cdev->flags & QED_FLAG_STORAGE_STARTED) {
1157 DP_NOTICE(cdev, "iscsi already started;\n");
1158 return 0;
1159 }
1160
1161 rc = qed_sp_iscsi_func_start(QED_LEADING_HWFN(cdev),
1162 QED_SPQ_MODE_EBLOCK, NULL, event_context,
1163 async_event_cb);
1164 if (rc) {
1165 DP_NOTICE(cdev, "Failed to start iscsi\n");
1166 return rc;
1167 }
1168
1169 cdev->flags |= QED_FLAG_STORAGE_STARTED;
1170 hash_init(cdev->connections);
1171
1172 if (!tasks)
1173 return 0;
1174
1175 tid_info = kzalloc(sizeof(*tid_info), GFP_KERNEL);
1176
1177 if (!tid_info) {
1178 qed_iscsi_stop(cdev);
1179 return -ENOMEM;
1180 }
1181
1182 rc = qed_cxt_get_tid_mem_info(QED_LEADING_HWFN(cdev),
1183 tid_info);
1184 if (rc) {
1185 DP_NOTICE(cdev, "Failed to gather task information\n");
1186 qed_iscsi_stop(cdev);
1187 kfree(tid_info);
1188 return rc;
1189 }
1190
1191 /* Fill task information */
1192 tasks->size = tid_info->tid_size;
1193 tasks->num_tids_per_block = tid_info->num_tids_per_block;
1194 memcpy(tasks->blocks, tid_info->blocks,
1195 MAX_TID_BLOCKS_ISCSI * sizeof(u8 *));
1196
1197 kfree(tid_info);
1198
1199 return 0;
1200 }
1201
1202 static int qed_iscsi_acquire_conn(struct qed_dev *cdev,
1203 u32 *handle,
1204 u32 *fw_cid, void __iomem **p_doorbell)
1205 {
1206 struct qed_hash_iscsi_con *hash_con;
1207 int rc;
1208
1209 /* Allocate a hashed connection */
1210 hash_con = kzalloc(sizeof(*hash_con), GFP_ATOMIC);
1211 if (!hash_con)
1212 return -ENOMEM;
1213
1214 /* Acquire the connection */
1215 rc = qed_iscsi_acquire_connection(QED_LEADING_HWFN(cdev), NULL,
1216 &hash_con->con);
1217 if (rc) {
1218 DP_NOTICE(cdev, "Failed to acquire Connection\n");
1219 kfree(hash_con);
1220 return rc;
1221 }
1222
1223 /* Added the connection to hash table */
1224 *handle = hash_con->con->icid;
1225 *fw_cid = hash_con->con->fw_cid;
1226 hash_add(cdev->connections, &hash_con->node, *handle);
1227
1228 if (p_doorbell)
1229 *p_doorbell = qed_iscsi_get_db_addr(QED_LEADING_HWFN(cdev),
1230 *handle);
1231
1232 return 0;
1233 }
1234
1235 static int qed_iscsi_release_conn(struct qed_dev *cdev, u32 handle)
1236 {
1237 struct qed_hash_iscsi_con *hash_con;
1238
1239 hash_con = qed_iscsi_get_hash(cdev, handle);
1240 if (!hash_con) {
1241 DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
1242 handle);
1243 return -EINVAL;
1244 }
1245
1246 hlist_del(&hash_con->node);
1247 qed_iscsi_release_connection(QED_LEADING_HWFN(cdev), hash_con->con);
1248 kfree(hash_con);
1249
1250 return 0;
1251 }
1252
1253 static int qed_iscsi_offload_conn(struct qed_dev *cdev,
1254 u32 handle,
1255 struct qed_iscsi_params_offload *conn_info)
1256 {
1257 struct qed_hash_iscsi_con *hash_con;
1258 struct qed_iscsi_conn *con;
1259
1260 hash_con = qed_iscsi_get_hash(cdev, handle);
1261 if (!hash_con) {
1262 DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
1263 handle);
1264 return -EINVAL;
1265 }
1266
1267 /* Update the connection with information from the params */
1268 con = hash_con->con;
1269
1270 ether_addr_copy(con->local_mac, conn_info->src.mac);
1271 ether_addr_copy(con->remote_mac, conn_info->dst.mac);
1272 memcpy(con->local_ip, conn_info->src.ip, sizeof(con->local_ip));
1273 memcpy(con->remote_ip, conn_info->dst.ip, sizeof(con->remote_ip));
1274 con->local_port = conn_info->src.port;
1275 con->remote_port = conn_info->dst.port;
1276
1277 con->layer_code = conn_info->layer_code;
1278 con->sq_pbl_addr = conn_info->sq_pbl_addr;
1279 con->initial_ack = conn_info->initial_ack;
1280 con->vlan_id = conn_info->vlan_id;
1281 con->tcp_flags = conn_info->tcp_flags;
1282 con->ip_version = conn_info->ip_version;
1283 con->default_cq = conn_info->default_cq;
1284 con->ka_max_probe_cnt = conn_info->ka_max_probe_cnt;
1285 con->dup_ack_theshold = conn_info->dup_ack_theshold;
1286 con->rcv_next = conn_info->rcv_next;
1287 con->snd_una = conn_info->snd_una;
1288 con->snd_next = conn_info->snd_next;
1289 con->snd_max = conn_info->snd_max;
1290 con->snd_wnd = conn_info->snd_wnd;
1291 con->rcv_wnd = conn_info->rcv_wnd;
1292 con->snd_wl1 = conn_info->snd_wl1;
1293 con->cwnd = conn_info->cwnd;
1294 con->ss_thresh = conn_info->ss_thresh;
1295 con->srtt = conn_info->srtt;
1296 con->rtt_var = conn_info->rtt_var;
1297 con->ts_time = conn_info->ts_time;
1298 con->ts_recent = conn_info->ts_recent;
1299 con->ts_recent_age = conn_info->ts_recent_age;
1300 con->total_rt = conn_info->total_rt;
1301 con->ka_timeout_delta = conn_info->ka_timeout_delta;
1302 con->rt_timeout_delta = conn_info->rt_timeout_delta;
1303 con->dup_ack_cnt = conn_info->dup_ack_cnt;
1304 con->snd_wnd_probe_cnt = conn_info->snd_wnd_probe_cnt;
1305 con->ka_probe_cnt = conn_info->ka_probe_cnt;
1306 con->rt_cnt = conn_info->rt_cnt;
1307 con->flow_label = conn_info->flow_label;
1308 con->ka_timeout = conn_info->ka_timeout;
1309 con->ka_interval = conn_info->ka_interval;
1310 con->max_rt_time = conn_info->max_rt_time;
1311 con->initial_rcv_wnd = conn_info->initial_rcv_wnd;
1312 con->ttl = conn_info->ttl;
1313 con->tos_or_tc = conn_info->tos_or_tc;
1314 con->remote_port = conn_info->remote_port;
1315 con->local_port = conn_info->local_port;
1316 con->mss = conn_info->mss;
1317 con->snd_wnd_scale = conn_info->snd_wnd_scale;
1318 con->rcv_wnd_scale = conn_info->rcv_wnd_scale;
1319 con->ts_ticks_per_second = conn_info->ts_ticks_per_second;
1320 con->da_timeout_value = conn_info->da_timeout_value;
1321 con->ack_frequency = conn_info->ack_frequency;
1322
1323 /* Set default values on other connection fields */
1324 con->offl_flags = 0x1;
1325
1326 return qed_sp_iscsi_conn_offload(QED_LEADING_HWFN(cdev), con,
1327 QED_SPQ_MODE_EBLOCK, NULL);
1328 }
1329
1330 static int qed_iscsi_update_conn(struct qed_dev *cdev,
1331 u32 handle,
1332 struct qed_iscsi_params_update *conn_info)
1333 {
1334 struct qed_hash_iscsi_con *hash_con;
1335 struct qed_iscsi_conn *con;
1336
1337 hash_con = qed_iscsi_get_hash(cdev, handle);
1338 if (!hash_con) {
1339 DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
1340 handle);
1341 return -EINVAL;
1342 }
1343
1344 /* Update the connection with information from the params */
1345 con = hash_con->con;
1346 con->update_flag = conn_info->update_flag;
1347 con->max_seq_size = conn_info->max_seq_size;
1348 con->max_recv_pdu_length = conn_info->max_recv_pdu_length;
1349 con->max_send_pdu_length = conn_info->max_send_pdu_length;
1350 con->first_seq_length = conn_info->first_seq_length;
1351 con->exp_stat_sn = conn_info->exp_stat_sn;
1352
1353 return qed_sp_iscsi_conn_update(QED_LEADING_HWFN(cdev), con,
1354 QED_SPQ_MODE_EBLOCK, NULL);
1355 }
1356
1357 static int qed_iscsi_clear_conn_sq(struct qed_dev *cdev, u32 handle)
1358 {
1359 struct qed_hash_iscsi_con *hash_con;
1360
1361 hash_con = qed_iscsi_get_hash(cdev, handle);
1362 if (!hash_con) {
1363 DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
1364 handle);
1365 return -EINVAL;
1366 }
1367
1368 return qed_sp_iscsi_conn_clear_sq(QED_LEADING_HWFN(cdev),
1369 hash_con->con,
1370 QED_SPQ_MODE_EBLOCK, NULL);
1371 }
1372
1373 static int qed_iscsi_destroy_conn(struct qed_dev *cdev,
1374 u32 handle, u8 abrt_conn)
1375 {
1376 struct qed_hash_iscsi_con *hash_con;
1377
1378 hash_con = qed_iscsi_get_hash(cdev, handle);
1379 if (!hash_con) {
1380 DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
1381 handle);
1382 return -EINVAL;
1383 }
1384
1385 hash_con->con->abortive_dsconnect = abrt_conn;
1386
1387 return qed_sp_iscsi_conn_terminate(QED_LEADING_HWFN(cdev),
1388 hash_con->con,
1389 QED_SPQ_MODE_EBLOCK, NULL);
1390 }
1391
1392 static int qed_iscsi_stats(struct qed_dev *cdev, struct qed_iscsi_stats *stats)
1393 {
1394 return qed_iscsi_get_stats(QED_LEADING_HWFN(cdev), stats);
1395 }
1396
1397 static int qed_iscsi_change_mac(struct qed_dev *cdev,
1398 u32 handle, const u8 *mac)
1399 {
1400 struct qed_hash_iscsi_con *hash_con;
1401
1402 hash_con = qed_iscsi_get_hash(cdev, handle);
1403 if (!hash_con) {
1404 DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
1405 handle);
1406 return -EINVAL;
1407 }
1408
1409 return qed_sp_iscsi_mac_update(QED_LEADING_HWFN(cdev),
1410 hash_con->con,
1411 QED_SPQ_MODE_EBLOCK, NULL);
1412 }
1413
1414 void qed_get_protocol_stats_iscsi(struct qed_dev *cdev,
1415 struct qed_mcp_iscsi_stats *stats)
1416 {
1417 struct qed_iscsi_stats proto_stats;
1418
1419 /* Retrieve FW statistics */
1420 memset(&proto_stats, 0, sizeof(proto_stats));
1421 if (qed_iscsi_stats(cdev, &proto_stats)) {
1422 DP_VERBOSE(cdev, QED_MSG_STORAGE,
1423 "Failed to collect ISCSI statistics\n");
1424 return;
1425 }
1426
1427 /* Translate FW statistics into struct */
1428 stats->rx_pdus = proto_stats.iscsi_rx_total_pdu_cnt;
1429 stats->tx_pdus = proto_stats.iscsi_tx_total_pdu_cnt;
1430 stats->rx_bytes = proto_stats.iscsi_rx_bytes_cnt;
1431 stats->tx_bytes = proto_stats.iscsi_tx_bytes_cnt;
1432 }
1433
1434 static const struct qed_iscsi_ops qed_iscsi_ops_pass = {
1435 .common = &qed_common_ops_pass,
1436 .ll2 = &qed_ll2_ops_pass,
1437 .fill_dev_info = &qed_fill_iscsi_dev_info,
1438 .register_ops = &qed_register_iscsi_ops,
1439 .start = &qed_iscsi_start,
1440 .stop = &qed_iscsi_stop,
1441 .acquire_conn = &qed_iscsi_acquire_conn,
1442 .release_conn = &qed_iscsi_release_conn,
1443 .offload_conn = &qed_iscsi_offload_conn,
1444 .update_conn = &qed_iscsi_update_conn,
1445 .destroy_conn = &qed_iscsi_destroy_conn,
1446 .clear_sq = &qed_iscsi_clear_conn_sq,
1447 .get_stats = &qed_iscsi_stats,
1448 .change_mac = &qed_iscsi_change_mac,
1449 };
1450
1451 const struct qed_iscsi_ops *qed_get_iscsi_ops(void)
1452 {
1453 return &qed_iscsi_ops_pass;
1454 }
1455 EXPORT_SYMBOL(qed_get_iscsi_ops);
1456
1457 void qed_put_iscsi_ops(void)
1458 {
1459 }
1460 EXPORT_SYMBOL(qed_put_iscsi_ops);
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