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treewide: remove redundant IS_ERR() before error code check
[linux/fpc-iii.git] / drivers / net / ethernet / qlogic / qed / qed_iscsi.c
blob7245a615517a0aa8a4427f8f2547a6ea9386ab90
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 struct qed_iscsi_conn {
66 struct list_head list_entry;
67 bool free_on_delete;
68
69 u16 conn_id;
70 u32 icid;
71 u32 fw_cid;
72
73 u8 layer_code;
74 u8 offl_flags;
75 u8 connect_mode;
76 u32 initial_ack;
77 dma_addr_t sq_pbl_addr;
78 struct qed_chain r2tq;
79 struct qed_chain xhq;
80 struct qed_chain uhq;
81
82 struct tcp_upload_params *tcp_upload_params_virt_addr;
83 dma_addr_t tcp_upload_params_phys_addr;
84 struct scsi_terminate_extra_params *queue_cnts_virt_addr;
85 dma_addr_t queue_cnts_phys_addr;
86 dma_addr_t syn_phy_addr;
87
88 u16 syn_ip_payload_length;
89 u8 local_mac[6];
90 u8 remote_mac[6];
91 u16 vlan_id;
92 u16 tcp_flags;
93 u8 ip_version;
94 u32 remote_ip[4];
95 u32 local_ip[4];
96 u8 ka_max_probe_cnt;
97 u8 dup_ack_theshold;
98 u32 rcv_next;
99 u32 snd_una;
100 u32 snd_next;
101 u32 snd_max;
102 u32 snd_wnd;
103 u32 rcv_wnd;
104 u32 snd_wl1;
105 u32 cwnd;
106 u32 ss_thresh;
107 u16 srtt;
108 u16 rtt_var;
109 u32 ts_recent;
110 u32 ts_recent_age;
111 u32 total_rt;
112 u32 ka_timeout_delta;
113 u32 rt_timeout_delta;
114 u8 dup_ack_cnt;
115 u8 snd_wnd_probe_cnt;
116 u8 ka_probe_cnt;
117 u8 rt_cnt;
118 u32 flow_label;
119 u32 ka_timeout;
120 u32 ka_interval;
121 u32 max_rt_time;
122 u32 initial_rcv_wnd;
123 u8 ttl;
124 u8 tos_or_tc;
125 u16 remote_port;
126 u16 local_port;
127 u16 mss;
128 u8 snd_wnd_scale;
129 u8 rcv_wnd_scale;
130 u16 da_timeout_value;
131 u8 ack_frequency;
132
133 u8 update_flag;
134 u8 default_cq;
135 u32 max_seq_size;
136 u32 max_recv_pdu_length;
137 u32 max_send_pdu_length;
138 u32 first_seq_length;
139 u32 exp_stat_sn;
140 u32 stat_sn;
141 u16 physical_q0;
142 u16 physical_q1;
143 u8 abortive_dsconnect;
144 };
145
146 static int
147 qed_iscsi_async_event(struct qed_hwfn *p_hwfn,
148 u8 fw_event_code,
149 u16 echo, union event_ring_data *data, u8 fw_return_code)
150 {
151 if (p_hwfn->p_iscsi_info->event_cb) {
152 struct qed_iscsi_info *p_iscsi = p_hwfn->p_iscsi_info;
153
154 return p_iscsi->event_cb(p_iscsi->event_context,
155 fw_event_code, data);
156 } else {
157 DP_NOTICE(p_hwfn, "iSCSI async completion is not set\n");
158 return -EINVAL;
159 }
160 }
161
162 static int
163 qed_sp_iscsi_func_start(struct qed_hwfn *p_hwfn,
164 enum spq_mode comp_mode,
165 struct qed_spq_comp_cb *p_comp_addr,
166 void *event_context, iscsi_event_cb_t async_event_cb)
167 {
168 struct iscsi_init_ramrod_params *p_ramrod = NULL;
169 struct scsi_init_func_queues *p_queue = NULL;
170 struct qed_iscsi_pf_params *p_params = NULL;
171 struct iscsi_spe_func_init *p_init = NULL;
172 struct qed_spq_entry *p_ent = NULL;
173 struct qed_sp_init_data init_data;
174 int rc = 0;
175 u32 dval;
176 u16 val;
177 u8 i;
178
179 /* Get SPQ entry */
180 memset(&init_data, 0, sizeof(init_data));
181 init_data.cid = qed_spq_get_cid(p_hwfn);
182 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
183 init_data.comp_mode = comp_mode;
184 init_data.p_comp_data = p_comp_addr;
185
186 rc = qed_sp_init_request(p_hwfn, &p_ent,
187 ISCSI_RAMROD_CMD_ID_INIT_FUNC,
188 PROTOCOLID_ISCSI, &init_data);
189 if (rc)
190 return rc;
191
192 p_ramrod = &p_ent->ramrod.iscsi_init;
193 p_init = &p_ramrod->iscsi_init_spe;
194 p_params = &p_hwfn->pf_params.iscsi_pf_params;
195 p_queue = &p_init->q_params;
196
197 /* Sanity */
198 if (p_params->num_queues > p_hwfn->hw_info.feat_num[QED_ISCSI_CQ]) {
199 DP_ERR(p_hwfn,
200 "Cannot satisfy CQ amount. Queues requested %d, CQs available %d. Aborting function start\n",
201 p_params->num_queues,
202 p_hwfn->hw_info.feat_num[QED_ISCSI_CQ]);
203 qed_sp_destroy_request(p_hwfn, p_ent);
204 return -EINVAL;
205 }
206
207 val = p_params->half_way_close_timeout;
208 p_init->half_way_close_timeout = cpu_to_le16(val);
209 p_init->num_sq_pages_in_ring = p_params->num_sq_pages_in_ring;
210 p_init->num_r2tq_pages_in_ring = p_params->num_r2tq_pages_in_ring;
211 p_init->num_uhq_pages_in_ring = p_params->num_uhq_pages_in_ring;
212 p_init->ll2_rx_queue_id =
213 p_hwfn->hw_info.resc_start[QED_LL2_RAM_QUEUE] +
214 p_params->ll2_ooo_queue_id;
215
216 p_init->func_params.log_page_size = p_params->log_page_size;
217 val = p_params->num_tasks;
218 p_init->func_params.num_tasks = cpu_to_le16(val);
219 p_init->debug_mode.flags = p_params->debug_mode;
220
221 DMA_REGPAIR_LE(p_queue->glbl_q_params_addr,
222 p_params->glbl_q_params_addr);
223
224 val = p_params->cq_num_entries;
225 p_queue->cq_num_entries = cpu_to_le16(val);
226 val = p_params->cmdq_num_entries;
227 p_queue->cmdq_num_entries = cpu_to_le16(val);
228 p_queue->num_queues = p_params->num_queues;
229 dval = (u8)p_hwfn->hw_info.resc_start[QED_CMDQS_CQS];
230 p_queue->queue_relative_offset = (u8)dval;
231 p_queue->cq_sb_pi = p_params->gl_rq_pi;
232 p_queue->cmdq_sb_pi = p_params->gl_cmd_pi;
233
234 for (i = 0; i < p_params->num_queues; i++) {
235 val = qed_get_igu_sb_id(p_hwfn, i);
236 p_queue->cq_cmdq_sb_num_arr[i] = cpu_to_le16(val);
237 }
238
239 p_queue->bdq_resource_id = (u8)RESC_START(p_hwfn, QED_BDQ);
240
241 DMA_REGPAIR_LE(p_queue->bdq_pbl_base_address[BDQ_ID_RQ],
242 p_params->bdq_pbl_base_addr[BDQ_ID_RQ]);
243 p_queue->bdq_pbl_num_entries[BDQ_ID_RQ] =
244 p_params->bdq_pbl_num_entries[BDQ_ID_RQ];
245 val = p_params->bdq_xoff_threshold[BDQ_ID_RQ];
246 p_queue->bdq_xoff_threshold[BDQ_ID_RQ] = cpu_to_le16(val);
247 val = p_params->bdq_xon_threshold[BDQ_ID_RQ];
248 p_queue->bdq_xon_threshold[BDQ_ID_RQ] = cpu_to_le16(val);
249
250 DMA_REGPAIR_LE(p_queue->bdq_pbl_base_address[BDQ_ID_IMM_DATA],
251 p_params->bdq_pbl_base_addr[BDQ_ID_IMM_DATA]);
252 p_queue->bdq_pbl_num_entries[BDQ_ID_IMM_DATA] =
253 p_params->bdq_pbl_num_entries[BDQ_ID_IMM_DATA];
254 val = p_params->bdq_xoff_threshold[BDQ_ID_IMM_DATA];
255 p_queue->bdq_xoff_threshold[BDQ_ID_IMM_DATA] = cpu_to_le16(val);
256 val = p_params->bdq_xon_threshold[BDQ_ID_IMM_DATA];
257 p_queue->bdq_xon_threshold[BDQ_ID_IMM_DATA] = cpu_to_le16(val);
258 val = p_params->rq_buffer_size;
259 p_queue->rq_buffer_size = cpu_to_le16(val);
260 if (p_params->is_target) {
261 SET_FIELD(p_queue->q_validity,
262 SCSI_INIT_FUNC_QUEUES_RQ_VALID, 1);
263 if (p_queue->bdq_pbl_num_entries[BDQ_ID_IMM_DATA])
264 SET_FIELD(p_queue->q_validity,
265 SCSI_INIT_FUNC_QUEUES_IMM_DATA_VALID, 1);
266 SET_FIELD(p_queue->q_validity,
267 SCSI_INIT_FUNC_QUEUES_CMD_VALID, 1);
268 } else {
269 SET_FIELD(p_queue->q_validity,
270 SCSI_INIT_FUNC_QUEUES_RQ_VALID, 1);
271 }
272 p_ramrod->tcp_init.two_msl_timer = cpu_to_le32(p_params->two_msl_timer);
273 val = p_params->tx_sws_timer;
274 p_ramrod->tcp_init.tx_sws_timer = cpu_to_le16(val);
275 p_ramrod->tcp_init.max_fin_rt = p_params->max_fin_rt;
276
277 p_hwfn->p_iscsi_info->event_context = event_context;
278 p_hwfn->p_iscsi_info->event_cb = async_event_cb;
279
280 qed_spq_register_async_cb(p_hwfn, PROTOCOLID_ISCSI,
281 qed_iscsi_async_event);
282
283 return qed_spq_post(p_hwfn, p_ent, NULL);
284 }
285
286 static int qed_sp_iscsi_conn_offload(struct qed_hwfn *p_hwfn,
287 struct qed_iscsi_conn *p_conn,
288 enum spq_mode comp_mode,
289 struct qed_spq_comp_cb *p_comp_addr)
290 {
291 struct iscsi_spe_conn_offload *p_ramrod = NULL;
292 struct tcp_offload_params_opt2 *p_tcp2 = NULL;
293 struct tcp_offload_params *p_tcp = NULL;
294 struct qed_spq_entry *p_ent = NULL;
295 struct qed_sp_init_data init_data;
296 dma_addr_t r2tq_pbl_addr;
297 dma_addr_t xhq_pbl_addr;
298 dma_addr_t uhq_pbl_addr;
299 u16 physical_q;
300 int rc = 0;
301 u32 dval;
302 u16 wval;
303 u16 *p;
304 u8 i;
305
306 /* Get SPQ entry */
307 memset(&init_data, 0, sizeof(init_data));
308 init_data.cid = p_conn->icid;
309 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
310 init_data.comp_mode = comp_mode;
311 init_data.p_comp_data = p_comp_addr;
312
313 rc = qed_sp_init_request(p_hwfn, &p_ent,
314 ISCSI_RAMROD_CMD_ID_OFFLOAD_CONN,
315 PROTOCOLID_ISCSI, &init_data);
316 if (rc)
317 return rc;
318
319 p_ramrod = &p_ent->ramrod.iscsi_conn_offload;
320
321 /* Transmission PQ is the first of the PF */
322 physical_q = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_OFLD);
323 p_conn->physical_q0 = cpu_to_le16(physical_q);
324 p_ramrod->iscsi.physical_q0 = cpu_to_le16(physical_q);
325
326 /* iSCSI Pure-ACK PQ */
327 physical_q = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_ACK);
328 p_conn->physical_q1 = cpu_to_le16(physical_q);
329 p_ramrod->iscsi.physical_q1 = cpu_to_le16(physical_q);
330
331 p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id);
332
333 DMA_REGPAIR_LE(p_ramrod->iscsi.sq_pbl_addr, p_conn->sq_pbl_addr);
334
335 r2tq_pbl_addr = qed_chain_get_pbl_phys(&p_conn->r2tq);
336 DMA_REGPAIR_LE(p_ramrod->iscsi.r2tq_pbl_addr, r2tq_pbl_addr);
337
338 xhq_pbl_addr = qed_chain_get_pbl_phys(&p_conn->xhq);
339 DMA_REGPAIR_LE(p_ramrod->iscsi.xhq_pbl_addr, xhq_pbl_addr);
340
341 uhq_pbl_addr = qed_chain_get_pbl_phys(&p_conn->uhq);
342 DMA_REGPAIR_LE(p_ramrod->iscsi.uhq_pbl_addr, uhq_pbl_addr);
343
344 p_ramrod->iscsi.initial_ack = cpu_to_le32(p_conn->initial_ack);
345 p_ramrod->iscsi.flags = p_conn->offl_flags;
346 p_ramrod->iscsi.default_cq = p_conn->default_cq;
347 p_ramrod->iscsi.stat_sn = cpu_to_le32(p_conn->stat_sn);
348
349 if (!GET_FIELD(p_ramrod->iscsi.flags,
350 ISCSI_CONN_OFFLOAD_PARAMS_TCP_ON_CHIP_1B)) {
351 p_tcp = &p_ramrod->tcp;
352
353 p = (u16 *)p_conn->local_mac;
354 p_tcp->local_mac_addr_hi = swab16(get_unaligned(p));
355 p_tcp->local_mac_addr_mid = swab16(get_unaligned(p + 1));
356 p_tcp->local_mac_addr_lo = swab16(get_unaligned(p + 2));
357
358 p = (u16 *)p_conn->remote_mac;
359 p_tcp->remote_mac_addr_hi = swab16(get_unaligned(p));
360 p_tcp->remote_mac_addr_mid = swab16(get_unaligned(p + 1));
361 p_tcp->remote_mac_addr_lo = swab16(get_unaligned(p + 2));
362
363 p_tcp->vlan_id = cpu_to_le16(p_conn->vlan_id);
364
365 p_tcp->flags = cpu_to_le16(p_conn->tcp_flags);
366 p_tcp->ip_version = p_conn->ip_version;
367 for (i = 0; i < 4; i++) {
368 dval = p_conn->remote_ip[i];
369 p_tcp->remote_ip[i] = cpu_to_le32(dval);
370 dval = p_conn->local_ip[i];
371 p_tcp->local_ip[i] = cpu_to_le32(dval);
372 }
373 p_tcp->ka_max_probe_cnt = p_conn->ka_max_probe_cnt;
374 p_tcp->dup_ack_theshold = p_conn->dup_ack_theshold;
375
376 p_tcp->rcv_next = cpu_to_le32(p_conn->rcv_next);
377 p_tcp->snd_una = cpu_to_le32(p_conn->snd_una);
378 p_tcp->snd_next = cpu_to_le32(p_conn->snd_next);
379 p_tcp->snd_max = cpu_to_le32(p_conn->snd_max);
380 p_tcp->snd_wnd = cpu_to_le32(p_conn->snd_wnd);
381 p_tcp->rcv_wnd = cpu_to_le32(p_conn->rcv_wnd);
382 p_tcp->snd_wl1 = cpu_to_le32(p_conn->snd_wl1);
383 p_tcp->cwnd = cpu_to_le32(p_conn->cwnd);
384 p_tcp->ss_thresh = cpu_to_le32(p_conn->ss_thresh);
385 p_tcp->srtt = cpu_to_le16(p_conn->srtt);
386 p_tcp->rtt_var = cpu_to_le16(p_conn->rtt_var);
387 p_tcp->ts_recent = cpu_to_le32(p_conn->ts_recent);
388 p_tcp->ts_recent_age = cpu_to_le32(p_conn->ts_recent_age);
389 p_tcp->total_rt = cpu_to_le32(p_conn->total_rt);
390 dval = p_conn->ka_timeout_delta;
391 p_tcp->ka_timeout_delta = cpu_to_le32(dval);
392 dval = p_conn->rt_timeout_delta;
393 p_tcp->rt_timeout_delta = cpu_to_le32(dval);
394 p_tcp->dup_ack_cnt = p_conn->dup_ack_cnt;
395 p_tcp->snd_wnd_probe_cnt = p_conn->snd_wnd_probe_cnt;
396 p_tcp->ka_probe_cnt = p_conn->ka_probe_cnt;
397 p_tcp->rt_cnt = p_conn->rt_cnt;
398 p_tcp->flow_label = cpu_to_le32(p_conn->flow_label);
399 p_tcp->ka_timeout = cpu_to_le32(p_conn->ka_timeout);
400 p_tcp->ka_interval = cpu_to_le32(p_conn->ka_interval);
401 p_tcp->max_rt_time = cpu_to_le32(p_conn->max_rt_time);
402 dval = p_conn->initial_rcv_wnd;
403 p_tcp->initial_rcv_wnd = cpu_to_le32(dval);
404 p_tcp->ttl = p_conn->ttl;
405 p_tcp->tos_or_tc = p_conn->tos_or_tc;
406 p_tcp->remote_port = cpu_to_le16(p_conn->remote_port);
407 p_tcp->local_port = cpu_to_le16(p_conn->local_port);
408 p_tcp->mss = cpu_to_le16(p_conn->mss);
409 p_tcp->snd_wnd_scale = p_conn->snd_wnd_scale;
410 p_tcp->rcv_wnd_scale = p_conn->rcv_wnd_scale;
411 wval = p_conn->da_timeout_value;
412 p_tcp->da_timeout_value = cpu_to_le16(wval);
413 p_tcp->ack_frequency = p_conn->ack_frequency;
414 p_tcp->connect_mode = p_conn->connect_mode;
415 } else {
416 p_tcp2 =
417 &((struct iscsi_spe_conn_offload_option2 *)p_ramrod)->tcp;
418
419 p = (u16 *)p_conn->local_mac;
420 p_tcp2->local_mac_addr_hi = swab16(get_unaligned(p));
421 p_tcp2->local_mac_addr_mid = swab16(get_unaligned(p + 1));
422 p_tcp2->local_mac_addr_lo = swab16(get_unaligned(p + 2));
423
424 p = (u16 *)p_conn->remote_mac;
425 p_tcp2->remote_mac_addr_hi = swab16(get_unaligned(p));
426 p_tcp2->remote_mac_addr_mid = swab16(get_unaligned(p + 1));
427 p_tcp2->remote_mac_addr_lo = swab16(get_unaligned(p + 2));
428
429 p_tcp2->vlan_id = cpu_to_le16(p_conn->vlan_id);
430 p_tcp2->flags = cpu_to_le16(p_conn->tcp_flags);
431
432 p_tcp2->ip_version = p_conn->ip_version;
433 for (i = 0; i < 4; i++) {
434 dval = p_conn->remote_ip[i];
435 p_tcp2->remote_ip[i] = cpu_to_le32(dval);
436 dval = p_conn->local_ip[i];
437 p_tcp2->local_ip[i] = cpu_to_le32(dval);
438 }
439
440 p_tcp2->flow_label = cpu_to_le32(p_conn->flow_label);
441 p_tcp2->ttl = p_conn->ttl;
442 p_tcp2->tos_or_tc = p_conn->tos_or_tc;
443 p_tcp2->remote_port = cpu_to_le16(p_conn->remote_port);
444 p_tcp2->local_port = cpu_to_le16(p_conn->local_port);
445 p_tcp2->mss = cpu_to_le16(p_conn->mss);
446 p_tcp2->rcv_wnd_scale = p_conn->rcv_wnd_scale;
447 p_tcp2->connect_mode = p_conn->connect_mode;
448 wval = p_conn->syn_ip_payload_length;
449 p_tcp2->syn_ip_payload_length = cpu_to_le16(wval);
450 p_tcp2->syn_phy_addr_lo = DMA_LO_LE(p_conn->syn_phy_addr);
451 p_tcp2->syn_phy_addr_hi = DMA_HI_LE(p_conn->syn_phy_addr);
452 p_tcp2->cwnd = cpu_to_le32(p_conn->cwnd);
453 p_tcp2->ka_max_probe_cnt = p_conn->ka_probe_cnt;
454 p_tcp2->ka_timeout = cpu_to_le32(p_conn->ka_timeout);
455 p_tcp2->max_rt_time = cpu_to_le32(p_conn->max_rt_time);
456 p_tcp2->ka_interval = cpu_to_le32(p_conn->ka_interval);
457 }
458
459 return qed_spq_post(p_hwfn, p_ent, NULL);
460 }
461
462 static int qed_sp_iscsi_conn_update(struct qed_hwfn *p_hwfn,
463 struct qed_iscsi_conn *p_conn,
464 enum spq_mode comp_mode,
465 struct qed_spq_comp_cb *p_comp_addr)
466 {
467 struct iscsi_conn_update_ramrod_params *p_ramrod = NULL;
468 struct qed_spq_entry *p_ent = NULL;
469 struct qed_sp_init_data init_data;
470 int rc = -EINVAL;
471 u32 dval;
472
473 /* Get SPQ entry */
474 memset(&init_data, 0, sizeof(init_data));
475 init_data.cid = p_conn->icid;
476 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
477 init_data.comp_mode = comp_mode;
478 init_data.p_comp_data = p_comp_addr;
479
480 rc = qed_sp_init_request(p_hwfn, &p_ent,
481 ISCSI_RAMROD_CMD_ID_UPDATE_CONN,
482 PROTOCOLID_ISCSI, &init_data);
483 if (rc)
484 return rc;
485
486 p_ramrod = &p_ent->ramrod.iscsi_conn_update;
487
488 p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id);
489 p_ramrod->flags = p_conn->update_flag;
490 p_ramrod->max_seq_size = cpu_to_le32(p_conn->max_seq_size);
491 dval = p_conn->max_recv_pdu_length;
492 p_ramrod->max_recv_pdu_length = cpu_to_le32(dval);
493 dval = p_conn->max_send_pdu_length;
494 p_ramrod->max_send_pdu_length = cpu_to_le32(dval);
495 dval = p_conn->first_seq_length;
496 p_ramrod->first_seq_length = cpu_to_le32(dval);
497 p_ramrod->exp_stat_sn = cpu_to_le32(p_conn->exp_stat_sn);
498
499 return qed_spq_post(p_hwfn, p_ent, NULL);
500 }
501
502 static int
503 qed_sp_iscsi_mac_update(struct qed_hwfn *p_hwfn,
504 struct qed_iscsi_conn *p_conn,
505 enum spq_mode comp_mode,
506 struct qed_spq_comp_cb *p_comp_addr)
507 {
508 struct iscsi_spe_conn_mac_update *p_ramrod = NULL;
509 struct qed_spq_entry *p_ent = NULL;
510 struct qed_sp_init_data init_data;
511 int rc = -EINVAL;
512 u8 ucval;
513
514 /* Get SPQ entry */
515 memset(&init_data, 0, sizeof(init_data));
516 init_data.cid = p_conn->icid;
517 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
518 init_data.comp_mode = comp_mode;
519 init_data.p_comp_data = p_comp_addr;
520
521 rc = qed_sp_init_request(p_hwfn, &p_ent,
522 ISCSI_RAMROD_CMD_ID_MAC_UPDATE,
523 PROTOCOLID_ISCSI, &init_data);
524 if (rc)
525 return rc;
526
527 p_ramrod = &p_ent->ramrod.iscsi_conn_mac_update;
528
529 p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id);
530 ucval = p_conn->remote_mac[1];
531 ((u8 *)(&p_ramrod->remote_mac_addr_hi))[0] = ucval;
532 ucval = p_conn->remote_mac[0];
533 ((u8 *)(&p_ramrod->remote_mac_addr_hi))[1] = ucval;
534 ucval = p_conn->remote_mac[3];
535 ((u8 *)(&p_ramrod->remote_mac_addr_mid))[0] = ucval;
536 ucval = p_conn->remote_mac[2];
537 ((u8 *)(&p_ramrod->remote_mac_addr_mid))[1] = ucval;
538 ucval = p_conn->remote_mac[5];
539 ((u8 *)(&p_ramrod->remote_mac_addr_lo))[0] = ucval;
540 ucval = p_conn->remote_mac[4];
541 ((u8 *)(&p_ramrod->remote_mac_addr_lo))[1] = ucval;
542
543 return qed_spq_post(p_hwfn, p_ent, NULL);
544 }
545
546 static int qed_sp_iscsi_conn_terminate(struct qed_hwfn *p_hwfn,
547 struct qed_iscsi_conn *p_conn,
548 enum spq_mode comp_mode,
549 struct qed_spq_comp_cb *p_comp_addr)
550 {
551 struct iscsi_spe_conn_termination *p_ramrod = NULL;
552 struct qed_spq_entry *p_ent = NULL;
553 struct qed_sp_init_data init_data;
554 int rc = -EINVAL;
555
556 /* Get SPQ entry */
557 memset(&init_data, 0, sizeof(init_data));
558 init_data.cid = p_conn->icid;
559 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
560 init_data.comp_mode = comp_mode;
561 init_data.p_comp_data = p_comp_addr;
562
563 rc = qed_sp_init_request(p_hwfn, &p_ent,
564 ISCSI_RAMROD_CMD_ID_TERMINATION_CONN,
565 PROTOCOLID_ISCSI, &init_data);
566 if (rc)
567 return rc;
568
569 p_ramrod = &p_ent->ramrod.iscsi_conn_terminate;
570
571 p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id);
572 p_ramrod->abortive = p_conn->abortive_dsconnect;
573
574 DMA_REGPAIR_LE(p_ramrod->query_params_addr,
575 p_conn->tcp_upload_params_phys_addr);
576 DMA_REGPAIR_LE(p_ramrod->queue_cnts_addr, p_conn->queue_cnts_phys_addr);
577
578 return qed_spq_post(p_hwfn, p_ent, NULL);
579 }
580
581 static int qed_sp_iscsi_conn_clear_sq(struct qed_hwfn *p_hwfn,
582 struct qed_iscsi_conn *p_conn,
583 enum spq_mode comp_mode,
584 struct qed_spq_comp_cb *p_comp_addr)
585 {
586 struct qed_spq_entry *p_ent = NULL;
587 struct qed_sp_init_data init_data;
588 int rc = -EINVAL;
589
590 /* Get SPQ entry */
591 memset(&init_data, 0, sizeof(init_data));
592 init_data.cid = p_conn->icid;
593 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
594 init_data.comp_mode = comp_mode;
595 init_data.p_comp_data = p_comp_addr;
596
597 rc = qed_sp_init_request(p_hwfn, &p_ent,
598 ISCSI_RAMROD_CMD_ID_CLEAR_SQ,
599 PROTOCOLID_ISCSI, &init_data);
600 if (rc)
601 return rc;
602
603 return qed_spq_post(p_hwfn, p_ent, NULL);
604 }
605
606 static int qed_sp_iscsi_func_stop(struct qed_hwfn *p_hwfn,
607 enum spq_mode comp_mode,
608 struct qed_spq_comp_cb *p_comp_addr)
609 {
610 struct qed_spq_entry *p_ent = NULL;
611 struct qed_sp_init_data init_data;
612 int rc = 0;
613
614 /* Get SPQ entry */
615 memset(&init_data, 0, sizeof(init_data));
616 init_data.cid = qed_spq_get_cid(p_hwfn);
617 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
618 init_data.comp_mode = comp_mode;
619 init_data.p_comp_data = p_comp_addr;
620
621 rc = qed_sp_init_request(p_hwfn, &p_ent,
622 ISCSI_RAMROD_CMD_ID_DESTROY_FUNC,
623 PROTOCOLID_ISCSI, &init_data);
624 if (rc)
625 return rc;
626
627 rc = qed_spq_post(p_hwfn, p_ent, NULL);
628
629 qed_spq_unregister_async_cb(p_hwfn, PROTOCOLID_ISCSI);
630 return rc;
631 }
632
633 static void __iomem *qed_iscsi_get_db_addr(struct qed_hwfn *p_hwfn, u32 cid)
634 {
635 return (u8 __iomem *)p_hwfn->doorbells +
636 qed_db_addr(cid, DQ_DEMS_LEGACY);
637 }
638
639 static void __iomem *qed_iscsi_get_primary_bdq_prod(struct qed_hwfn *p_hwfn,
640 u8 bdq_id)
641 {
642 if (RESC_NUM(p_hwfn, QED_BDQ)) {
643 return (u8 __iomem *)p_hwfn->regview +
644 GTT_BAR0_MAP_REG_MSDM_RAM +
645 MSTORM_SCSI_BDQ_EXT_PROD_OFFSET(RESC_START(p_hwfn,
646 QED_BDQ),
647 bdq_id);
648 } else {
649 DP_NOTICE(p_hwfn, "BDQ is not allocated!\n");
650 return NULL;
651 }
652 }
653
654 static void __iomem *qed_iscsi_get_secondary_bdq_prod(struct qed_hwfn *p_hwfn,
655 u8 bdq_id)
656 {
657 if (RESC_NUM(p_hwfn, QED_BDQ)) {
658 return (u8 __iomem *)p_hwfn->regview +
659 GTT_BAR0_MAP_REG_TSDM_RAM +
660 TSTORM_SCSI_BDQ_EXT_PROD_OFFSET(RESC_START(p_hwfn,
661 QED_BDQ),
662 bdq_id);
663 } else {
664 DP_NOTICE(p_hwfn, "BDQ is not allocated!\n");
665 return NULL;
666 }
667 }
668
669 static int qed_iscsi_setup_connection(struct qed_iscsi_conn *p_conn)
670 {
671 if (!p_conn->queue_cnts_virt_addr)
672 goto nomem;
673 memset(p_conn->queue_cnts_virt_addr, 0,
674 sizeof(*p_conn->queue_cnts_virt_addr));
675
676 if (!p_conn->tcp_upload_params_virt_addr)
677 goto nomem;
678 memset(p_conn->tcp_upload_params_virt_addr, 0,
679 sizeof(*p_conn->tcp_upload_params_virt_addr));
680
681 if (!p_conn->r2tq.p_virt_addr)
682 goto nomem;
683 qed_chain_pbl_zero_mem(&p_conn->r2tq);
684
685 if (!p_conn->uhq.p_virt_addr)
686 goto nomem;
687 qed_chain_pbl_zero_mem(&p_conn->uhq);
688
689 if (!p_conn->xhq.p_virt_addr)
690 goto nomem;
691 qed_chain_pbl_zero_mem(&p_conn->xhq);
692
693 return 0;
694 nomem:
695 return -ENOMEM;
696 }
697
698 static int qed_iscsi_allocate_connection(struct qed_hwfn *p_hwfn,
699 struct qed_iscsi_conn **p_out_conn)
700 {
701 u16 uhq_num_elements = 0, xhq_num_elements = 0, r2tq_num_elements = 0;
702 struct scsi_terminate_extra_params *p_q_cnts = NULL;
703 struct qed_iscsi_pf_params *p_params = NULL;
704 struct tcp_upload_params *p_tcp = NULL;
705 struct qed_iscsi_conn *p_conn = NULL;
706 int rc = 0;
707
708 /* Try finding a free connection that can be used */
709 spin_lock_bh(&p_hwfn->p_iscsi_info->lock);
710 if (!list_empty(&p_hwfn->p_iscsi_info->free_list))
711 p_conn = list_first_entry(&p_hwfn->p_iscsi_info->free_list,
712 struct qed_iscsi_conn, list_entry);
713 if (p_conn) {
714 list_del(&p_conn->list_entry);
715 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock);
716 *p_out_conn = p_conn;
717 return 0;
718 }
719 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock);
720
721 /* Need to allocate a new connection */
722 p_params = &p_hwfn->pf_params.iscsi_pf_params;
723
724 p_conn = kzalloc(sizeof(*p_conn), GFP_KERNEL);
725 if (!p_conn)
726 return -ENOMEM;
727
728 p_q_cnts = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev,
729 sizeof(*p_q_cnts),
730 &p_conn->queue_cnts_phys_addr,
731 GFP_KERNEL);
732 if (!p_q_cnts)
733 goto nomem_queue_cnts_param;
734 p_conn->queue_cnts_virt_addr = p_q_cnts;
735
736 p_tcp = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev,
737 sizeof(*p_tcp),
738 &p_conn->tcp_upload_params_phys_addr,
739 GFP_KERNEL);
740 if (!p_tcp)
741 goto nomem_upload_param;
742 p_conn->tcp_upload_params_virt_addr = p_tcp;
743
744 r2tq_num_elements = p_params->num_r2tq_pages_in_ring *
745 QED_CHAIN_PAGE_SIZE / 0x80;
746 rc = qed_chain_alloc(p_hwfn->cdev,
747 QED_CHAIN_USE_TO_CONSUME_PRODUCE,
748 QED_CHAIN_MODE_PBL,
749 QED_CHAIN_CNT_TYPE_U16,
750 r2tq_num_elements, 0x80, &p_conn->r2tq, NULL);
751 if (rc)
752 goto nomem_r2tq;
753
754 uhq_num_elements = p_params->num_uhq_pages_in_ring *
755 QED_CHAIN_PAGE_SIZE / sizeof(struct iscsi_uhqe);
756 rc = qed_chain_alloc(p_hwfn->cdev,
757 QED_CHAIN_USE_TO_CONSUME_PRODUCE,
758 QED_CHAIN_MODE_PBL,
759 QED_CHAIN_CNT_TYPE_U16,
760 uhq_num_elements,
761 sizeof(struct iscsi_uhqe), &p_conn->uhq, NULL);
762 if (rc)
763 goto nomem_uhq;
764
765 xhq_num_elements = uhq_num_elements;
766 rc = qed_chain_alloc(p_hwfn->cdev,
767 QED_CHAIN_USE_TO_CONSUME_PRODUCE,
768 QED_CHAIN_MODE_PBL,
769 QED_CHAIN_CNT_TYPE_U16,
770 xhq_num_elements,
771 sizeof(struct iscsi_xhqe), &p_conn->xhq, NULL);
772 if (rc)
773 goto nomem;
774
775 p_conn->free_on_delete = true;
776 *p_out_conn = p_conn;
777 return 0;
778
779 nomem:
780 qed_chain_free(p_hwfn->cdev, &p_conn->uhq);
781 nomem_uhq:
782 qed_chain_free(p_hwfn->cdev, &p_conn->r2tq);
783 nomem_r2tq:
784 dma_free_coherent(&p_hwfn->cdev->pdev->dev,
785 sizeof(struct tcp_upload_params),
786 p_conn->tcp_upload_params_virt_addr,
787 p_conn->tcp_upload_params_phys_addr);
788 nomem_upload_param:
789 dma_free_coherent(&p_hwfn->cdev->pdev->dev,
790 sizeof(struct scsi_terminate_extra_params),
791 p_conn->queue_cnts_virt_addr,
792 p_conn->queue_cnts_phys_addr);
793 nomem_queue_cnts_param:
794 kfree(p_conn);
795
796 return -ENOMEM;
797 }
798
799 static int qed_iscsi_acquire_connection(struct qed_hwfn *p_hwfn,
800 struct qed_iscsi_conn *p_in_conn,
801 struct qed_iscsi_conn **p_out_conn)
802 {
803 struct qed_iscsi_conn *p_conn = NULL;
804 int rc = 0;
805 u32 icid;
806
807 spin_lock_bh(&p_hwfn->p_iscsi_info->lock);
808 rc = qed_cxt_acquire_cid(p_hwfn, PROTOCOLID_ISCSI, &icid);
809 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock);
810 if (rc)
811 return rc;
812
813 /* Use input connection or allocate a new one */
814 if (p_in_conn)
815 p_conn = p_in_conn;
816 else
817 rc = qed_iscsi_allocate_connection(p_hwfn, &p_conn);
818
819 if (!rc)
820 rc = qed_iscsi_setup_connection(p_conn);
821
822 if (rc) {
823 spin_lock_bh(&p_hwfn->p_iscsi_info->lock);
824 qed_cxt_release_cid(p_hwfn, icid);
825 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock);
826 return rc;
827 }
828
829 p_conn->icid = icid;
830 p_conn->conn_id = (u16)icid;
831 p_conn->fw_cid = (p_hwfn->hw_info.opaque_fid << 16) | icid;
832
833 *p_out_conn = p_conn;
834
835 return rc;
836 }
837
838 static void qed_iscsi_release_connection(struct qed_hwfn *p_hwfn,
839 struct qed_iscsi_conn *p_conn)
840 {
841 spin_lock_bh(&p_hwfn->p_iscsi_info->lock);
842 list_add_tail(&p_conn->list_entry, &p_hwfn->p_iscsi_info->free_list);
843 qed_cxt_release_cid(p_hwfn, p_conn->icid);
844 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock);
845 }
846
847 static void qed_iscsi_free_connection(struct qed_hwfn *p_hwfn,
848 struct qed_iscsi_conn *p_conn)
849 {
850 qed_chain_free(p_hwfn->cdev, &p_conn->xhq);
851 qed_chain_free(p_hwfn->cdev, &p_conn->uhq);
852 qed_chain_free(p_hwfn->cdev, &p_conn->r2tq);
853 dma_free_coherent(&p_hwfn->cdev->pdev->dev,
854 sizeof(struct tcp_upload_params),
855 p_conn->tcp_upload_params_virt_addr,
856 p_conn->tcp_upload_params_phys_addr);
857 dma_free_coherent(&p_hwfn->cdev->pdev->dev,
858 sizeof(struct scsi_terminate_extra_params),
859 p_conn->queue_cnts_virt_addr,
860 p_conn->queue_cnts_phys_addr);
861 kfree(p_conn);
862 }
863
864 int qed_iscsi_alloc(struct qed_hwfn *p_hwfn)
865 {
866 struct qed_iscsi_info *p_iscsi_info;
867
868 p_iscsi_info = kzalloc(sizeof(*p_iscsi_info), GFP_KERNEL);
869 if (!p_iscsi_info)
870 return -ENOMEM;
871
872 INIT_LIST_HEAD(&p_iscsi_info->free_list);
873
874 p_hwfn->p_iscsi_info = p_iscsi_info;
875 return 0;
876 }
877
878 void qed_iscsi_setup(struct qed_hwfn *p_hwfn)
879 {
880 spin_lock_init(&p_hwfn->p_iscsi_info->lock);
881 }
882
883 void qed_iscsi_free(struct qed_hwfn *p_hwfn)
884 {
885 struct qed_iscsi_conn *p_conn = NULL;
886
887 if (!p_hwfn->p_iscsi_info)
888 return;
889
890 while (!list_empty(&p_hwfn->p_iscsi_info->free_list)) {
891 p_conn = list_first_entry(&p_hwfn->p_iscsi_info->free_list,
892 struct qed_iscsi_conn, list_entry);
893 if (p_conn) {
894 list_del(&p_conn->list_entry);
895 qed_iscsi_free_connection(p_hwfn, p_conn);
896 }
897 }
898
899 kfree(p_hwfn->p_iscsi_info);
900 p_hwfn->p_iscsi_info = NULL;
901 }
902
903 static void _qed_iscsi_get_tstats(struct qed_hwfn *p_hwfn,
904 struct qed_ptt *p_ptt,
905 struct qed_iscsi_stats *p_stats)
906 {
907 struct tstorm_iscsi_stats_drv tstats;
908 u32 tstats_addr;
909
910 memset(&tstats, 0, sizeof(tstats));
911 tstats_addr = BAR0_MAP_REG_TSDM_RAM +
912 TSTORM_ISCSI_RX_STATS_OFFSET(p_hwfn->rel_pf_id);
913 qed_memcpy_from(p_hwfn, p_ptt, &tstats, tstats_addr, sizeof(tstats));
914
915 p_stats->iscsi_rx_bytes_cnt =
916 HILO_64_REGPAIR(tstats.iscsi_rx_bytes_cnt);
917 p_stats->iscsi_rx_packet_cnt =
918 HILO_64_REGPAIR(tstats.iscsi_rx_packet_cnt);
919 p_stats->iscsi_rx_new_ooo_isle_events_cnt =
920 HILO_64_REGPAIR(tstats.iscsi_rx_new_ooo_isle_events_cnt);
921 p_stats->iscsi_cmdq_threshold_cnt =
922 le32_to_cpu(tstats.iscsi_cmdq_threshold_cnt);
923 p_stats->iscsi_rq_threshold_cnt =
924 le32_to_cpu(tstats.iscsi_rq_threshold_cnt);
925 p_stats->iscsi_immq_threshold_cnt =
926 le32_to_cpu(tstats.iscsi_immq_threshold_cnt);
927 }
928
929 static void _qed_iscsi_get_mstats(struct qed_hwfn *p_hwfn,
930 struct qed_ptt *p_ptt,
931 struct qed_iscsi_stats *p_stats)
932 {
933 struct mstorm_iscsi_stats_drv mstats;
934 u32 mstats_addr;
935
936 memset(&mstats, 0, sizeof(mstats));
937 mstats_addr = BAR0_MAP_REG_MSDM_RAM +
938 MSTORM_ISCSI_RX_STATS_OFFSET(p_hwfn->rel_pf_id);
939 qed_memcpy_from(p_hwfn, p_ptt, &mstats, mstats_addr, sizeof(mstats));
940
941 p_stats->iscsi_rx_dropped_pdus_task_not_valid =
942 HILO_64_REGPAIR(mstats.iscsi_rx_dropped_pdus_task_not_valid);
943 }
944
945 static void _qed_iscsi_get_ustats(struct qed_hwfn *p_hwfn,
946 struct qed_ptt *p_ptt,
947 struct qed_iscsi_stats *p_stats)
948 {
949 struct ustorm_iscsi_stats_drv ustats;
950 u32 ustats_addr;
951
952 memset(&ustats, 0, sizeof(ustats));
953 ustats_addr = BAR0_MAP_REG_USDM_RAM +
954 USTORM_ISCSI_RX_STATS_OFFSET(p_hwfn->rel_pf_id);
955 qed_memcpy_from(p_hwfn, p_ptt, &ustats, ustats_addr, sizeof(ustats));
956
957 p_stats->iscsi_rx_data_pdu_cnt =
958 HILO_64_REGPAIR(ustats.iscsi_rx_data_pdu_cnt);
959 p_stats->iscsi_rx_r2t_pdu_cnt =
960 HILO_64_REGPAIR(ustats.iscsi_rx_r2t_pdu_cnt);
961 p_stats->iscsi_rx_total_pdu_cnt =
962 HILO_64_REGPAIR(ustats.iscsi_rx_total_pdu_cnt);
963 }
964
965 static void _qed_iscsi_get_xstats(struct qed_hwfn *p_hwfn,
966 struct qed_ptt *p_ptt,
967 struct qed_iscsi_stats *p_stats)
968 {
969 struct xstorm_iscsi_stats_drv xstats;
970 u32 xstats_addr;
971
972 memset(&xstats, 0, sizeof(xstats));
973 xstats_addr = BAR0_MAP_REG_XSDM_RAM +
974 XSTORM_ISCSI_TX_STATS_OFFSET(p_hwfn->rel_pf_id);
975 qed_memcpy_from(p_hwfn, p_ptt, &xstats, xstats_addr, sizeof(xstats));
976
977 p_stats->iscsi_tx_go_to_slow_start_event_cnt =
978 HILO_64_REGPAIR(xstats.iscsi_tx_go_to_slow_start_event_cnt);
979 p_stats->iscsi_tx_fast_retransmit_event_cnt =
980 HILO_64_REGPAIR(xstats.iscsi_tx_fast_retransmit_event_cnt);
981 }
982
983 static void _qed_iscsi_get_ystats(struct qed_hwfn *p_hwfn,
984 struct qed_ptt *p_ptt,
985 struct qed_iscsi_stats *p_stats)
986 {
987 struct ystorm_iscsi_stats_drv ystats;
988 u32 ystats_addr;
989
990 memset(&ystats, 0, sizeof(ystats));
991 ystats_addr = BAR0_MAP_REG_YSDM_RAM +
992 YSTORM_ISCSI_TX_STATS_OFFSET(p_hwfn->rel_pf_id);
993 qed_memcpy_from(p_hwfn, p_ptt, &ystats, ystats_addr, sizeof(ystats));
994
995 p_stats->iscsi_tx_data_pdu_cnt =
996 HILO_64_REGPAIR(ystats.iscsi_tx_data_pdu_cnt);
997 p_stats->iscsi_tx_r2t_pdu_cnt =
998 HILO_64_REGPAIR(ystats.iscsi_tx_r2t_pdu_cnt);
999 p_stats->iscsi_tx_total_pdu_cnt =
1000 HILO_64_REGPAIR(ystats.iscsi_tx_total_pdu_cnt);
1001 }
1002
1003 static void _qed_iscsi_get_pstats(struct qed_hwfn *p_hwfn,
1004 struct qed_ptt *p_ptt,
1005 struct qed_iscsi_stats *p_stats)
1006 {
1007 struct pstorm_iscsi_stats_drv pstats;
1008 u32 pstats_addr;
1009
1010 memset(&pstats, 0, sizeof(pstats));
1011 pstats_addr = BAR0_MAP_REG_PSDM_RAM +
1012 PSTORM_ISCSI_TX_STATS_OFFSET(p_hwfn->rel_pf_id);
1013 qed_memcpy_from(p_hwfn, p_ptt, &pstats, pstats_addr, sizeof(pstats));
1014
1015 p_stats->iscsi_tx_bytes_cnt =
1016 HILO_64_REGPAIR(pstats.iscsi_tx_bytes_cnt);
1017 p_stats->iscsi_tx_packet_cnt =
1018 HILO_64_REGPAIR(pstats.iscsi_tx_packet_cnt);
1019 }
1020
1021 static int qed_iscsi_get_stats(struct qed_hwfn *p_hwfn,
1022 struct qed_iscsi_stats *stats)
1023 {
1024 struct qed_ptt *p_ptt;
1025
1026 memset(stats, 0, sizeof(*stats));
1027
1028 p_ptt = qed_ptt_acquire(p_hwfn);
1029 if (!p_ptt) {
1030 DP_ERR(p_hwfn, "Failed to acquire ptt\n");
1031 return -EAGAIN;
1032 }
1033
1034 _qed_iscsi_get_tstats(p_hwfn, p_ptt, stats);
1035 _qed_iscsi_get_mstats(p_hwfn, p_ptt, stats);
1036 _qed_iscsi_get_ustats(p_hwfn, p_ptt, stats);
1037
1038 _qed_iscsi_get_xstats(p_hwfn, p_ptt, stats);
1039 _qed_iscsi_get_ystats(p_hwfn, p_ptt, stats);
1040 _qed_iscsi_get_pstats(p_hwfn, p_ptt, stats);
1041
1042 qed_ptt_release(p_hwfn, p_ptt);
1043
1044 return 0;
1045 }
1046
1047 struct qed_hash_iscsi_con {
1048 struct hlist_node node;
1049 struct qed_iscsi_conn *con;
1050 };
1051
1052 static int qed_fill_iscsi_dev_info(struct qed_dev *cdev,
1053 struct qed_dev_iscsi_info *info)
1054 {
1055 struct qed_hwfn *hwfn = QED_AFFIN_HWFN(cdev);
1056
1057 int rc;
1058
1059 memset(info, 0, sizeof(*info));
1060 rc = qed_fill_dev_info(cdev, &info->common);
1061
1062 info->primary_dbq_rq_addr =
1063 qed_iscsi_get_primary_bdq_prod(hwfn, BDQ_ID_RQ);
1064 info->secondary_bdq_rq_addr =
1065 qed_iscsi_get_secondary_bdq_prod(hwfn, BDQ_ID_RQ);
1066
1067 info->num_cqs = FEAT_NUM(hwfn, QED_ISCSI_CQ);
1068
1069 return rc;
1070 }
1071
1072 static void qed_register_iscsi_ops(struct qed_dev *cdev,
1073 struct qed_iscsi_cb_ops *ops, void *cookie)
1074 {
1075 cdev->protocol_ops.iscsi = ops;
1076 cdev->ops_cookie = cookie;
1077 }
1078
1079 static struct qed_hash_iscsi_con *qed_iscsi_get_hash(struct qed_dev *cdev,
1080 u32 handle)
1081 {
1082 struct qed_hash_iscsi_con *hash_con = NULL;
1083
1084 if (!(cdev->flags & QED_FLAG_STORAGE_STARTED))
1085 return NULL;
1086
1087 hash_for_each_possible(cdev->connections, hash_con, node, handle) {
1088 if (hash_con->con->icid == handle)
1089 break;
1090 }
1091
1092 if (!hash_con || (hash_con->con->icid != handle))
1093 return NULL;
1094
1095 return hash_con;
1096 }
1097
1098 static int qed_iscsi_stop(struct qed_dev *cdev)
1099 {
1100 int rc;
1101
1102 if (!(cdev->flags & QED_FLAG_STORAGE_STARTED)) {
1103 DP_NOTICE(cdev, "iscsi already stopped\n");
1104 return 0;
1105 }
1106
1107 if (!hash_empty(cdev->connections)) {
1108 DP_NOTICE(cdev,
1109 "Can't stop iscsi - not all connections were returned\n");
1110 return -EINVAL;
1111 }
1112
1113 /* Stop the iscsi */
1114 rc = qed_sp_iscsi_func_stop(QED_AFFIN_HWFN(cdev), QED_SPQ_MODE_EBLOCK,
1115 NULL);
1116 cdev->flags &= ~QED_FLAG_STORAGE_STARTED;
1117
1118 return rc;
1119 }
1120
1121 static int qed_iscsi_start(struct qed_dev *cdev,
1122 struct qed_iscsi_tid *tasks,
1123 void *event_context,
1124 iscsi_event_cb_t async_event_cb)
1125 {
1126 int rc;
1127 struct qed_tid_mem *tid_info;
1128
1129 if (cdev->flags & QED_FLAG_STORAGE_STARTED) {
1130 DP_NOTICE(cdev, "iscsi already started;\n");
1131 return 0;
1132 }
1133
1134 rc = qed_sp_iscsi_func_start(QED_AFFIN_HWFN(cdev), QED_SPQ_MODE_EBLOCK,
1135 NULL, event_context, async_event_cb);
1136 if (rc) {
1137 DP_NOTICE(cdev, "Failed to start iscsi\n");
1138 return rc;
1139 }
1140
1141 cdev->flags |= QED_FLAG_STORAGE_STARTED;
1142 hash_init(cdev->connections);
1143
1144 if (!tasks)
1145 return 0;
1146
1147 tid_info = kzalloc(sizeof(*tid_info), GFP_KERNEL);
1148
1149 if (!tid_info) {
1150 qed_iscsi_stop(cdev);
1151 return -ENOMEM;
1152 }
1153
1154 rc = qed_cxt_get_tid_mem_info(QED_AFFIN_HWFN(cdev), tid_info);
1155 if (rc) {
1156 DP_NOTICE(cdev, "Failed to gather task information\n");
1157 qed_iscsi_stop(cdev);
1158 kfree(tid_info);
1159 return rc;
1160 }
1161
1162 /* Fill task information */
1163 tasks->size = tid_info->tid_size;
1164 tasks->num_tids_per_block = tid_info->num_tids_per_block;
1165 memcpy(tasks->blocks, tid_info->blocks,
1166 MAX_TID_BLOCKS_ISCSI * sizeof(u8 *));
1167
1168 kfree(tid_info);
1169
1170 return 0;
1171 }
1172
1173 static int qed_iscsi_acquire_conn(struct qed_dev *cdev,
1174 u32 *handle,
1175 u32 *fw_cid, void __iomem **p_doorbell)
1176 {
1177 struct qed_hash_iscsi_con *hash_con;
1178 int rc;
1179
1180 /* Allocate a hashed connection */
1181 hash_con = kzalloc(sizeof(*hash_con), GFP_ATOMIC);
1182 if (!hash_con)
1183 return -ENOMEM;
1184
1185 /* Acquire the connection */
1186 rc = qed_iscsi_acquire_connection(QED_AFFIN_HWFN(cdev), NULL,
1187 &hash_con->con);
1188 if (rc) {
1189 DP_NOTICE(cdev, "Failed to acquire Connection\n");
1190 kfree(hash_con);
1191 return rc;
1192 }
1193
1194 /* Added the connection to hash table */
1195 *handle = hash_con->con->icid;
1196 *fw_cid = hash_con->con->fw_cid;
1197 hash_add(cdev->connections, &hash_con->node, *handle);
1198
1199 if (p_doorbell)
1200 *p_doorbell = qed_iscsi_get_db_addr(QED_AFFIN_HWFN(cdev),
1201 *handle);
1202
1203 return 0;
1204 }
1205
1206 static int qed_iscsi_release_conn(struct qed_dev *cdev, u32 handle)
1207 {
1208 struct qed_hash_iscsi_con *hash_con;
1209
1210 hash_con = qed_iscsi_get_hash(cdev, handle);
1211 if (!hash_con) {
1212 DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
1213 handle);
1214 return -EINVAL;
1215 }
1216
1217 hlist_del(&hash_con->node);
1218 qed_iscsi_release_connection(QED_AFFIN_HWFN(cdev), hash_con->con);
1219 kfree(hash_con);
1220
1221 return 0;
1222 }
1223
1224 static int qed_iscsi_offload_conn(struct qed_dev *cdev,
1225 u32 handle,
1226 struct qed_iscsi_params_offload *conn_info)
1227 {
1228 struct qed_hash_iscsi_con *hash_con;
1229 struct qed_iscsi_conn *con;
1230
1231 hash_con = qed_iscsi_get_hash(cdev, handle);
1232 if (!hash_con) {
1233 DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
1234 handle);
1235 return -EINVAL;
1236 }
1237
1238 /* Update the connection with information from the params */
1239 con = hash_con->con;
1240
1241 ether_addr_copy(con->local_mac, conn_info->src.mac);
1242 ether_addr_copy(con->remote_mac, conn_info->dst.mac);
1243 memcpy(con->local_ip, conn_info->src.ip, sizeof(con->local_ip));
1244 memcpy(con->remote_ip, conn_info->dst.ip, sizeof(con->remote_ip));
1245 con->local_port = conn_info->src.port;
1246 con->remote_port = conn_info->dst.port;
1247
1248 con->layer_code = conn_info->layer_code;
1249 con->sq_pbl_addr = conn_info->sq_pbl_addr;
1250 con->initial_ack = conn_info->initial_ack;
1251 con->vlan_id = conn_info->vlan_id;
1252 con->tcp_flags = conn_info->tcp_flags;
1253 con->ip_version = conn_info->ip_version;
1254 con->default_cq = conn_info->default_cq;
1255 con->ka_max_probe_cnt = conn_info->ka_max_probe_cnt;
1256 con->dup_ack_theshold = conn_info->dup_ack_theshold;
1257 con->rcv_next = conn_info->rcv_next;
1258 con->snd_una = conn_info->snd_una;
1259 con->snd_next = conn_info->snd_next;
1260 con->snd_max = conn_info->snd_max;
1261 con->snd_wnd = conn_info->snd_wnd;
1262 con->rcv_wnd = conn_info->rcv_wnd;
1263 con->snd_wl1 = conn_info->snd_wl1;
1264 con->cwnd = conn_info->cwnd;
1265 con->ss_thresh = conn_info->ss_thresh;
1266 con->srtt = conn_info->srtt;
1267 con->rtt_var = conn_info->rtt_var;
1268 con->ts_recent = conn_info->ts_recent;
1269 con->ts_recent_age = conn_info->ts_recent_age;
1270 con->total_rt = conn_info->total_rt;
1271 con->ka_timeout_delta = conn_info->ka_timeout_delta;
1272 con->rt_timeout_delta = conn_info->rt_timeout_delta;
1273 con->dup_ack_cnt = conn_info->dup_ack_cnt;
1274 con->snd_wnd_probe_cnt = conn_info->snd_wnd_probe_cnt;
1275 con->ka_probe_cnt = conn_info->ka_probe_cnt;
1276 con->rt_cnt = conn_info->rt_cnt;
1277 con->flow_label = conn_info->flow_label;
1278 con->ka_timeout = conn_info->ka_timeout;
1279 con->ka_interval = conn_info->ka_interval;
1280 con->max_rt_time = conn_info->max_rt_time;
1281 con->initial_rcv_wnd = conn_info->initial_rcv_wnd;
1282 con->ttl = conn_info->ttl;
1283 con->tos_or_tc = conn_info->tos_or_tc;
1284 con->remote_port = conn_info->remote_port;
1285 con->local_port = conn_info->local_port;
1286 con->mss = conn_info->mss;
1287 con->snd_wnd_scale = conn_info->snd_wnd_scale;
1288 con->rcv_wnd_scale = conn_info->rcv_wnd_scale;
1289 con->da_timeout_value = conn_info->da_timeout_value;
1290 con->ack_frequency = conn_info->ack_frequency;
1291
1292 /* Set default values on other connection fields */
1293 con->offl_flags = 0x1;
1294
1295 return qed_sp_iscsi_conn_offload(QED_AFFIN_HWFN(cdev), con,
1296 QED_SPQ_MODE_EBLOCK, NULL);
1297 }
1298
1299 static int qed_iscsi_update_conn(struct qed_dev *cdev,
1300 u32 handle,
1301 struct qed_iscsi_params_update *conn_info)
1302 {
1303 struct qed_hash_iscsi_con *hash_con;
1304 struct qed_iscsi_conn *con;
1305
1306 hash_con = qed_iscsi_get_hash(cdev, handle);
1307 if (!hash_con) {
1308 DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
1309 handle);
1310 return -EINVAL;
1311 }
1312
1313 /* Update the connection with information from the params */
1314 con = hash_con->con;
1315 con->update_flag = conn_info->update_flag;
1316 con->max_seq_size = conn_info->max_seq_size;
1317 con->max_recv_pdu_length = conn_info->max_recv_pdu_length;
1318 con->max_send_pdu_length = conn_info->max_send_pdu_length;
1319 con->first_seq_length = conn_info->first_seq_length;
1320 con->exp_stat_sn = conn_info->exp_stat_sn;
1321
1322 return qed_sp_iscsi_conn_update(QED_AFFIN_HWFN(cdev), con,
1323 QED_SPQ_MODE_EBLOCK, NULL);
1324 }
1325
1326 static int qed_iscsi_clear_conn_sq(struct qed_dev *cdev, u32 handle)
1327 {
1328 struct qed_hash_iscsi_con *hash_con;
1329
1330 hash_con = qed_iscsi_get_hash(cdev, handle);
1331 if (!hash_con) {
1332 DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
1333 handle);
1334 return -EINVAL;
1335 }
1336
1337 return qed_sp_iscsi_conn_clear_sq(QED_AFFIN_HWFN(cdev), hash_con->con,
1338 QED_SPQ_MODE_EBLOCK, NULL);
1339 }
1340
1341 static int qed_iscsi_destroy_conn(struct qed_dev *cdev,
1342 u32 handle, u8 abrt_conn)
1343 {
1344 struct qed_hash_iscsi_con *hash_con;
1345
1346 hash_con = qed_iscsi_get_hash(cdev, handle);
1347 if (!hash_con) {
1348 DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
1349 handle);
1350 return -EINVAL;
1351 }
1352
1353 hash_con->con->abortive_dsconnect = abrt_conn;
1354
1355 return qed_sp_iscsi_conn_terminate(QED_AFFIN_HWFN(cdev), hash_con->con,
1356 QED_SPQ_MODE_EBLOCK, NULL);
1357 }
1358
1359 static int qed_iscsi_stats(struct qed_dev *cdev, struct qed_iscsi_stats *stats)
1360 {
1361 return qed_iscsi_get_stats(QED_AFFIN_HWFN(cdev), stats);
1362 }
1363
1364 static int qed_iscsi_change_mac(struct qed_dev *cdev,
1365 u32 handle, const u8 *mac)
1366 {
1367 struct qed_hash_iscsi_con *hash_con;
1368
1369 hash_con = qed_iscsi_get_hash(cdev, handle);
1370 if (!hash_con) {
1371 DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
1372 handle);
1373 return -EINVAL;
1374 }
1375
1376 return qed_sp_iscsi_mac_update(QED_AFFIN_HWFN(cdev), hash_con->con,
1377 QED_SPQ_MODE_EBLOCK, NULL);
1378 }
1379
1380 void qed_get_protocol_stats_iscsi(struct qed_dev *cdev,
1381 struct qed_mcp_iscsi_stats *stats)
1382 {
1383 struct qed_iscsi_stats proto_stats;
1384
1385 /* Retrieve FW statistics */
1386 memset(&proto_stats, 0, sizeof(proto_stats));
1387 if (qed_iscsi_stats(cdev, &proto_stats)) {
1388 DP_VERBOSE(cdev, QED_MSG_STORAGE,
1389 "Failed to collect ISCSI statistics\n");
1390 return;
1391 }
1392
1393 /* Translate FW statistics into struct */
1394 stats->rx_pdus = proto_stats.iscsi_rx_total_pdu_cnt;
1395 stats->tx_pdus = proto_stats.iscsi_tx_total_pdu_cnt;
1396 stats->rx_bytes = proto_stats.iscsi_rx_bytes_cnt;
1397 stats->tx_bytes = proto_stats.iscsi_tx_bytes_cnt;
1398 }
1399
1400 static const struct qed_iscsi_ops qed_iscsi_ops_pass = {
1401 .common = &qed_common_ops_pass,
1402 .ll2 = &qed_ll2_ops_pass,
1403 .fill_dev_info = &qed_fill_iscsi_dev_info,
1404 .register_ops = &qed_register_iscsi_ops,
1405 .start = &qed_iscsi_start,
1406 .stop = &qed_iscsi_stop,
1407 .acquire_conn = &qed_iscsi_acquire_conn,
1408 .release_conn = &qed_iscsi_release_conn,
1409 .offload_conn = &qed_iscsi_offload_conn,
1410 .update_conn = &qed_iscsi_update_conn,
1411 .destroy_conn = &qed_iscsi_destroy_conn,
1412 .clear_sq = &qed_iscsi_clear_conn_sq,
1413 .get_stats = &qed_iscsi_stats,
1414 .change_mac = &qed_iscsi_change_mac,
1415 };
1416
1417 const struct qed_iscsi_ops *qed_get_iscsi_ops(void)
1418 {
1419 return &qed_iscsi_ops_pass;
1420 }
1421 EXPORT_SYMBOL(qed_get_iscsi_ops);
1422
1423 void qed_put_iscsi_ops(void)
1424 {
1425 }
1426 EXPORT_SYMBOL(qed_put_iscsi_ops);
Linux with added FPC-III support