1 // SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
2 /* QLogic qed NIC Driver
3 * Copyright (c) 2015-2017 QLogic Corporation
4 * Copyright (c) 2019-2020 Marvell International Ltd.
5 */
6
7 #include <linux/types.h>
8 #include <asm/byteorder.h>
9 #include <asm/param.h>
10 #include <linux/delay.h>
11 #include <linux/dma-mapping.h>
12 #include <linux/etherdevice.h>
13 #include <linux/interrupt.h>
14 #include <linux/kernel.h>
15 #include <linux/log2.h>
16 #include <linux/module.h>
17 #include <linux/pci.h>
18 #include <linux/slab.h>
19 #include <linux/stddef.h>
20 #include <linux/string.h>
21 #include <linux/workqueue.h>
22 #include <linux/errno.h>
23 #include <linux/list.h>
24 #include <linux/spinlock.h>
25 #include <linux/qed/qed_iscsi_if.h>
26 #include "qed.h"
27 #include "qed_cxt.h"
28 #include "qed_dev_api.h"
29 #include "qed_hsi.h"
30 #include "qed_hw.h"
31 #include "qed_int.h"
32 #include "qed_iro_hsi.h"
33 #include "qed_iscsi.h"
34 #include "qed_ll2.h"
35 #include "qed_mcp.h"
36 #include "qed_sp.h"
37 #include "qed_sriov.h"
38 #include "qed_reg_addr.h"
39
40 struct qed_iscsi_conn {
41 struct list_head list_entry;
42 bool free_on_delete;
43
44 u16 conn_id;
45 u32 icid;
46 u32 fw_cid;
47
48 u8 layer_code;
49 u8 offl_flags;
50 u8 connect_mode;
51 u32 initial_ack;
52 dma_addr_t sq_pbl_addr;
53 struct qed_chain r2tq;
54 struct qed_chain xhq;
55 struct qed_chain uhq;
56
57 struct tcp_upload_params *tcp_upload_params_virt_addr;
58 dma_addr_t tcp_upload_params_phys_addr;
59 struct scsi_terminate_extra_params *queue_cnts_virt_addr;
60 dma_addr_t queue_cnts_phys_addr;
61 dma_addr_t syn_phy_addr;
62
63 u16 syn_ip_payload_length;
64 u8 local_mac[6];
65 u8 remote_mac[6];
66 u16 vlan_id;
67 u16 tcp_flags;
68 u8 ip_version;
69 u32 remote_ip[4];
70 u32 local_ip[4];
71 u8 ka_max_probe_cnt;
72 u8 dup_ack_theshold;
73 u32 rcv_next;
74 u32 snd_una;
75 u32 snd_next;
76 u32 snd_max;
77 u32 snd_wnd;
78 u32 rcv_wnd;
79 u32 snd_wl1;
80 u32 cwnd;
81 u32 ss_thresh;
82 u16 srtt;
83 u16 rtt_var;
84 u32 ts_recent;
85 u32 ts_recent_age;
86 u32 total_rt;
87 u32 ka_timeout_delta;
88 u32 rt_timeout_delta;
89 u8 dup_ack_cnt;
90 u8 snd_wnd_probe_cnt;
91 u8 ka_probe_cnt;
92 u8 rt_cnt;
93 u32 flow_label;
94 u32 ka_timeout;
95 u32 ka_interval;
96 u32 max_rt_time;
97 u32 initial_rcv_wnd;
98 u8 ttl;
99 u8 tos_or_tc;
100 u16 remote_port;
101 u16 local_port;
102 u16 mss;
103 u8 snd_wnd_scale;
104 u8 rcv_wnd_scale;
105 u16 da_timeout_value;
106 u8 ack_frequency;
107
108 u8 update_flag;
109 u8 default_cq;
110 u32 max_seq_size;
111 u32 max_recv_pdu_length;
112 u32 max_send_pdu_length;
113 u32 first_seq_length;
114 u32 exp_stat_sn;
115 u32 stat_sn;
116 u16 physical_q0;
117 u16 physical_q1;
118 u8 abortive_dsconnect;
119 };
120
qed_iscsi_async_event(struct qed_hwfn * p_hwfn,u8 fw_event_code,__le16 echo,union event_ring_data * data,u8 fw_return_code)121 static int qed_iscsi_async_event(struct qed_hwfn *p_hwfn, u8 fw_event_code,
122 __le16 echo, union event_ring_data *data,
123 u8 fw_return_code)
124 {
125 if (p_hwfn->p_iscsi_info->event_cb) {
126 struct qed_iscsi_info *p_iscsi = p_hwfn->p_iscsi_info;
127
128 return p_iscsi->event_cb(p_iscsi->event_context,
129 fw_event_code, data);
130 } else {
131 DP_NOTICE(p_hwfn, "iSCSI async completion is not set\n");
132 return -EINVAL;
133 }
134 }
135
136 static int
qed_sp_iscsi_func_start(struct qed_hwfn * p_hwfn,enum spq_mode comp_mode,struct qed_spq_comp_cb * p_comp_addr,void * event_context,iscsi_event_cb_t async_event_cb)137 qed_sp_iscsi_func_start(struct qed_hwfn *p_hwfn,
138 enum spq_mode comp_mode,
139 struct qed_spq_comp_cb *p_comp_addr,
140 void *event_context, iscsi_event_cb_t async_event_cb)
141 {
142 struct iscsi_init_ramrod_params *p_ramrod = NULL;
143 struct scsi_init_func_queues *p_queue = NULL;
144 struct qed_iscsi_pf_params *p_params = NULL;
145 struct iscsi_spe_func_init *p_init = NULL;
146 struct qed_spq_entry *p_ent = NULL;
147 struct qed_sp_init_data init_data;
148 int rc = 0;
149 u32 dval;
150 u16 val;
151 u8 i;
152
153 /* Get SPQ entry */
154 memset(&init_data, 0, sizeof(init_data));
155 init_data.cid = qed_spq_get_cid(p_hwfn);
156 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
157 init_data.comp_mode = comp_mode;
158 init_data.p_comp_data = p_comp_addr;
159
160 rc = qed_sp_init_request(p_hwfn, &p_ent,
161 ISCSI_RAMROD_CMD_ID_INIT_FUNC,
162 PROTOCOLID_TCP_ULP, &init_data);
163 if (rc)
164 return rc;
165
166 p_ramrod = &p_ent->ramrod.iscsi_init;
167 p_init = &p_ramrod->iscsi_init_spe;
168 p_params = &p_hwfn->pf_params.iscsi_pf_params;
169 p_queue = &p_init->q_params;
170
171 /* Sanity */
172 if (p_params->num_queues > p_hwfn->hw_info.feat_num[QED_ISCSI_CQ]) {
173 DP_ERR(p_hwfn,
174 "Cannot satisfy CQ amount. Queues requested %d, CQs available %d. Aborting function start\n",
175 p_params->num_queues,
176 p_hwfn->hw_info.feat_num[QED_ISCSI_CQ]);
177 qed_sp_destroy_request(p_hwfn, p_ent);
178 return -EINVAL;
179 }
180
181 val = p_params->half_way_close_timeout;
182 p_init->half_way_close_timeout = cpu_to_le16(val);
183 p_init->num_sq_pages_in_ring = p_params->num_sq_pages_in_ring;
184 p_init->num_r2tq_pages_in_ring = p_params->num_r2tq_pages_in_ring;
185 p_init->num_uhq_pages_in_ring = p_params->num_uhq_pages_in_ring;
186 p_init->ll2_rx_queue_id =
187 p_hwfn->hw_info.resc_start[QED_LL2_RAM_QUEUE] +
188 p_params->ll2_ooo_queue_id;
189
190 p_init->func_params.log_page_size = p_params->log_page_size;
191 val = p_params->num_tasks;
192 p_init->func_params.num_tasks = cpu_to_le16(val);
193 p_init->debug_mode.flags = p_params->debug_mode;
194
195 DMA_REGPAIR_LE(p_queue->glbl_q_params_addr,
196 p_params->glbl_q_params_addr);
197
198 val = p_params->cq_num_entries;
199 p_queue->cq_num_entries = cpu_to_le16(val);
200 val = p_params->cmdq_num_entries;
201 p_queue->cmdq_num_entries = cpu_to_le16(val);
202 p_queue->num_queues = p_params->num_queues;
203 dval = (u8)p_hwfn->hw_info.resc_start[QED_CMDQS_CQS];
204 p_queue->queue_relative_offset = (u8)dval;
205 p_queue->cq_sb_pi = p_params->gl_rq_pi;
206 p_queue->cmdq_sb_pi = p_params->gl_cmd_pi;
207
208 for (i = 0; i < p_params->num_queues; i++) {
209 val = qed_get_igu_sb_id(p_hwfn, i);
210 p_queue->cq_cmdq_sb_num_arr[i] = cpu_to_le16(val);
211 }
212
213 p_queue->bdq_resource_id = (u8)RESC_START(p_hwfn, QED_BDQ);
214
215 DMA_REGPAIR_LE(p_queue->bdq_pbl_base_address[BDQ_ID_RQ],
216 p_params->bdq_pbl_base_addr[BDQ_ID_RQ]);
217 p_queue->bdq_pbl_num_entries[BDQ_ID_RQ] =
218 p_params->bdq_pbl_num_entries[BDQ_ID_RQ];
219 val = p_params->bdq_xoff_threshold[BDQ_ID_RQ];
220 p_queue->bdq_xoff_threshold[BDQ_ID_RQ] = cpu_to_le16(val);
221 val = p_params->bdq_xon_threshold[BDQ_ID_RQ];
222 p_queue->bdq_xon_threshold[BDQ_ID_RQ] = cpu_to_le16(val);
223
224 DMA_REGPAIR_LE(p_queue->bdq_pbl_base_address[BDQ_ID_IMM_DATA],
225 p_params->bdq_pbl_base_addr[BDQ_ID_IMM_DATA]);
226 p_queue->bdq_pbl_num_entries[BDQ_ID_IMM_DATA] =
227 p_params->bdq_pbl_num_entries[BDQ_ID_IMM_DATA];
228 val = p_params->bdq_xoff_threshold[BDQ_ID_IMM_DATA];
229 p_queue->bdq_xoff_threshold[BDQ_ID_IMM_DATA] = cpu_to_le16(val);
230 val = p_params->bdq_xon_threshold[BDQ_ID_IMM_DATA];
231 p_queue->bdq_xon_threshold[BDQ_ID_IMM_DATA] = cpu_to_le16(val);
232 val = p_params->rq_buffer_size;
233 p_queue->rq_buffer_size = cpu_to_le16(val);
234 if (p_params->is_target) {
235 SET_FIELD(p_queue->q_validity,
236 SCSI_INIT_FUNC_QUEUES_RQ_VALID, 1);
237 if (p_queue->bdq_pbl_num_entries[BDQ_ID_IMM_DATA])
238 SET_FIELD(p_queue->q_validity,
239 SCSI_INIT_FUNC_QUEUES_IMM_DATA_VALID, 1);
240 SET_FIELD(p_queue->q_validity,
241 SCSI_INIT_FUNC_QUEUES_CMD_VALID, 1);
242 } else {
243 SET_FIELD(p_queue->q_validity,
244 SCSI_INIT_FUNC_QUEUES_RQ_VALID, 1);
245 }
246 p_ramrod->tcp_init.two_msl_timer = cpu_to_le32(p_params->two_msl_timer);
247 val = p_params->tx_sws_timer;
248 p_ramrod->tcp_init.tx_sws_timer = cpu_to_le16(val);
249 p_ramrod->tcp_init.max_fin_rt = p_params->max_fin_rt;
250
251 p_hwfn->p_iscsi_info->event_context = event_context;
252 p_hwfn->p_iscsi_info->event_cb = async_event_cb;
253
254 qed_spq_register_async_cb(p_hwfn, PROTOCOLID_TCP_ULP,
255 qed_iscsi_async_event);
256
257 return qed_spq_post(p_hwfn, p_ent, NULL);
258 }
259
qed_sp_iscsi_conn_offload(struct qed_hwfn * p_hwfn,struct qed_iscsi_conn * p_conn,enum spq_mode comp_mode,struct qed_spq_comp_cb * p_comp_addr)260 static int qed_sp_iscsi_conn_offload(struct qed_hwfn *p_hwfn,
261 struct qed_iscsi_conn *p_conn,
262 enum spq_mode comp_mode,
263 struct qed_spq_comp_cb *p_comp_addr)
264 {
265 struct iscsi_spe_conn_offload *p_ramrod = NULL;
266 struct tcp_offload_params_opt2 *p_tcp2 = NULL;
267 struct tcp_offload_params *p_tcp = NULL;
268 struct qed_spq_entry *p_ent = NULL;
269 struct qed_sp_init_data init_data;
270 dma_addr_t r2tq_pbl_addr;
271 dma_addr_t xhq_pbl_addr;
272 dma_addr_t uhq_pbl_addr;
273 u16 physical_q;
274 __le16 tmp;
275 int rc = 0;
276 u32 dval;
277 u16 wval;
278 u16 *p;
279 u8 i;
280
281 /* Get SPQ entry */
282 memset(&init_data, 0, sizeof(init_data));
283 init_data.cid = p_conn->icid;
284 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
285 init_data.comp_mode = comp_mode;
286 init_data.p_comp_data = p_comp_addr;
287
288 rc = qed_sp_init_request(p_hwfn, &p_ent,
289 ISCSI_RAMROD_CMD_ID_OFFLOAD_CONN,
290 PROTOCOLID_TCP_ULP, &init_data);
291 if (rc)
292 return rc;
293
294 p_ramrod = &p_ent->ramrod.iscsi_conn_offload;
295
296 /* Transmission PQ is the first of the PF */
297 physical_q = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_OFLD);
298 p_conn->physical_q0 = physical_q;
299 p_ramrod->iscsi.physical_q0 = cpu_to_le16(physical_q);
300
301 /* iSCSI Pure-ACK PQ */
302 physical_q = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_ACK);
303 p_conn->physical_q1 = physical_q;
304 p_ramrod->iscsi.physical_q1 = cpu_to_le16(physical_q);
305
306 p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id);
307
308 DMA_REGPAIR_LE(p_ramrod->iscsi.sq_pbl_addr, p_conn->sq_pbl_addr);
309
310 r2tq_pbl_addr = qed_chain_get_pbl_phys(&p_conn->r2tq);
311 DMA_REGPAIR_LE(p_ramrod->iscsi.r2tq_pbl_addr, r2tq_pbl_addr);
312
313 xhq_pbl_addr = qed_chain_get_pbl_phys(&p_conn->xhq);
314 DMA_REGPAIR_LE(p_ramrod->iscsi.xhq_pbl_addr, xhq_pbl_addr);
315
316 uhq_pbl_addr = qed_chain_get_pbl_phys(&p_conn->uhq);
317 DMA_REGPAIR_LE(p_ramrod->iscsi.uhq_pbl_addr, uhq_pbl_addr);
318
319 p_ramrod->iscsi.initial_ack = cpu_to_le32(p_conn->initial_ack);
320 p_ramrod->iscsi.flags = p_conn->offl_flags;
321 p_ramrod->iscsi.default_cq = p_conn->default_cq;
322 p_ramrod->iscsi.stat_sn = cpu_to_le32(p_conn->stat_sn);
323
324 if (!GET_FIELD(p_ramrod->iscsi.flags,
325 ISCSI_CONN_OFFLOAD_PARAMS_TCP_ON_CHIP_1B)) {
326 p_tcp = &p_ramrod->tcp;
327
328 p = (u16 *)p_conn->local_mac;
329 tmp = cpu_to_le16(get_unaligned_be16(p));
330 p_tcp->local_mac_addr_hi = tmp;
331 tmp = cpu_to_le16(get_unaligned_be16(p + 1));
332 p_tcp->local_mac_addr_mid = tmp;
333 tmp = cpu_to_le16(get_unaligned_be16(p + 2));
334 p_tcp->local_mac_addr_lo = tmp;
335
336 p = (u16 *)p_conn->remote_mac;
337 tmp = cpu_to_le16(get_unaligned_be16(p));
338 p_tcp->remote_mac_addr_hi = tmp;
339 tmp = cpu_to_le16(get_unaligned_be16(p + 1));
340 p_tcp->remote_mac_addr_mid = tmp;
341 tmp = cpu_to_le16(get_unaligned_be16(p + 2));
342 p_tcp->remote_mac_addr_lo = tmp;
343
344 p_tcp->vlan_id = cpu_to_le16(p_conn->vlan_id);
345
346 p_tcp->flags = cpu_to_le16(p_conn->tcp_flags);
347 p_tcp->ip_version = p_conn->ip_version;
348 for (i = 0; i < 4; i++) {
349 dval = p_conn->remote_ip[i];
350 p_tcp->remote_ip[i] = cpu_to_le32(dval);
351 dval = p_conn->local_ip[i];
352 p_tcp->local_ip[i] = cpu_to_le32(dval);
353 }
354 p_tcp->ka_max_probe_cnt = p_conn->ka_max_probe_cnt;
355 p_tcp->dup_ack_theshold = p_conn->dup_ack_theshold;
356
357 p_tcp->rcv_next = cpu_to_le32(p_conn->rcv_next);
358 p_tcp->snd_una = cpu_to_le32(p_conn->snd_una);
359 p_tcp->snd_next = cpu_to_le32(p_conn->snd_next);
360 p_tcp->snd_max = cpu_to_le32(p_conn->snd_max);
361 p_tcp->snd_wnd = cpu_to_le32(p_conn->snd_wnd);
362 p_tcp->rcv_wnd = cpu_to_le32(p_conn->rcv_wnd);
363 p_tcp->snd_wl1 = cpu_to_le32(p_conn->snd_wl1);
364 p_tcp->cwnd = cpu_to_le32(p_conn->cwnd);
365 p_tcp->ss_thresh = cpu_to_le32(p_conn->ss_thresh);
366 p_tcp->srtt = cpu_to_le16(p_conn->srtt);
367 p_tcp->rtt_var = cpu_to_le16(p_conn->rtt_var);
368 p_tcp->ts_recent = cpu_to_le32(p_conn->ts_recent);
369 p_tcp->ts_recent_age = cpu_to_le32(p_conn->ts_recent_age);
370 p_tcp->total_rt = cpu_to_le32(p_conn->total_rt);
371 dval = p_conn->ka_timeout_delta;
372 p_tcp->ka_timeout_delta = cpu_to_le32(dval);
373 dval = p_conn->rt_timeout_delta;
374 p_tcp->rt_timeout_delta = cpu_to_le32(dval);
375 p_tcp->dup_ack_cnt = p_conn->dup_ack_cnt;
376 p_tcp->snd_wnd_probe_cnt = p_conn->snd_wnd_probe_cnt;
377 p_tcp->ka_probe_cnt = p_conn->ka_probe_cnt;
378 p_tcp->rt_cnt = p_conn->rt_cnt;
379 p_tcp->flow_label = cpu_to_le32(p_conn->flow_label);
380 p_tcp->ka_timeout = cpu_to_le32(p_conn->ka_timeout);
381 p_tcp->ka_interval = cpu_to_le32(p_conn->ka_interval);
382 p_tcp->max_rt_time = cpu_to_le32(p_conn->max_rt_time);
383 dval = p_conn->initial_rcv_wnd;
384 p_tcp->initial_rcv_wnd = cpu_to_le32(dval);
385 p_tcp->ttl = p_conn->ttl;
386 p_tcp->tos_or_tc = p_conn->tos_or_tc;
387 p_tcp->remote_port = cpu_to_le16(p_conn->remote_port);
388 p_tcp->local_port = cpu_to_le16(p_conn->local_port);
389 p_tcp->mss = cpu_to_le16(p_conn->mss);
390 p_tcp->snd_wnd_scale = p_conn->snd_wnd_scale;
391 p_tcp->rcv_wnd_scale = p_conn->rcv_wnd_scale;
392 wval = p_conn->da_timeout_value;
393 p_tcp->da_timeout_value = cpu_to_le16(wval);
394 p_tcp->ack_frequency = p_conn->ack_frequency;
395 p_tcp->connect_mode = p_conn->connect_mode;
396 } else {
397 p_tcp2 =
398 &((struct iscsi_spe_conn_offload_option2 *)p_ramrod)->tcp;
399
400 p = (u16 *)p_conn->local_mac;
401 tmp = cpu_to_le16(get_unaligned_be16(p));
402 p_tcp2->local_mac_addr_hi = tmp;
403 tmp = cpu_to_le16(get_unaligned_be16(p + 1));
404 p_tcp2->local_mac_addr_mid = tmp;
405 tmp = cpu_to_le16(get_unaligned_be16(p + 2));
406 p_tcp2->local_mac_addr_lo = tmp;
407
408 p = (u16 *)p_conn->remote_mac;
409 tmp = cpu_to_le16(get_unaligned_be16(p));
410 p_tcp2->remote_mac_addr_hi = tmp;
411 tmp = cpu_to_le16(get_unaligned_be16(p + 1));
412 p_tcp2->remote_mac_addr_mid = tmp;
413 tmp = cpu_to_le16(get_unaligned_be16(p + 2));
414 p_tcp2->remote_mac_addr_lo = tmp;
415
416 p_tcp2->vlan_id = cpu_to_le16(p_conn->vlan_id);
417 p_tcp2->flags = cpu_to_le16(p_conn->tcp_flags);
418
419 p_tcp2->ip_version = p_conn->ip_version;
420 for (i = 0; i < 4; i++) {
421 dval = p_conn->remote_ip[i];
422 p_tcp2->remote_ip[i] = cpu_to_le32(dval);
423 dval = p_conn->local_ip[i];
424 p_tcp2->local_ip[i] = cpu_to_le32(dval);
425 }
426
427 p_tcp2->flow_label = cpu_to_le32(p_conn->flow_label);
428 p_tcp2->ttl = p_conn->ttl;
429 p_tcp2->tos_or_tc = p_conn->tos_or_tc;
430 p_tcp2->remote_port = cpu_to_le16(p_conn->remote_port);
431 p_tcp2->local_port = cpu_to_le16(p_conn->local_port);
432 p_tcp2->mss = cpu_to_le16(p_conn->mss);
433 p_tcp2->rcv_wnd_scale = p_conn->rcv_wnd_scale;
434 p_tcp2->connect_mode = p_conn->connect_mode;
435 wval = p_conn->syn_ip_payload_length;
436 p_tcp2->syn_ip_payload_length = cpu_to_le16(wval);
437 p_tcp2->syn_phy_addr_lo = DMA_LO_LE(p_conn->syn_phy_addr);
438 p_tcp2->syn_phy_addr_hi = DMA_HI_LE(p_conn->syn_phy_addr);
439 p_tcp2->cwnd = cpu_to_le32(p_conn->cwnd);
440 p_tcp2->ka_max_probe_cnt = p_conn->ka_probe_cnt;
441 p_tcp2->ka_timeout = cpu_to_le32(p_conn->ka_timeout);
442 p_tcp2->max_rt_time = cpu_to_le32(p_conn->max_rt_time);
443 p_tcp2->ka_interval = cpu_to_le32(p_conn->ka_interval);
444 }
445
446 return qed_spq_post(p_hwfn, p_ent, NULL);
447 }
448
qed_sp_iscsi_conn_update(struct qed_hwfn * p_hwfn,struct qed_iscsi_conn * p_conn,enum spq_mode comp_mode,struct qed_spq_comp_cb * p_comp_addr)449 static int qed_sp_iscsi_conn_update(struct qed_hwfn *p_hwfn,
450 struct qed_iscsi_conn *p_conn,
451 enum spq_mode comp_mode,
452 struct qed_spq_comp_cb *p_comp_addr)
453 {
454 struct iscsi_conn_update_ramrod_params *p_ramrod = NULL;
455 struct qed_spq_entry *p_ent = NULL;
456 struct qed_sp_init_data init_data;
457 int rc;
458 u32 dval;
459
460 /* Get SPQ entry */
461 memset(&init_data, 0, sizeof(init_data));
462 init_data.cid = p_conn->icid;
463 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
464 init_data.comp_mode = comp_mode;
465 init_data.p_comp_data = p_comp_addr;
466
467 rc = qed_sp_init_request(p_hwfn, &p_ent,
468 ISCSI_RAMROD_CMD_ID_UPDATE_CONN,
469 PROTOCOLID_TCP_ULP, &init_data);
470 if (rc)
471 return rc;
472
473 p_ramrod = &p_ent->ramrod.iscsi_conn_update;
474
475 p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id);
476 p_ramrod->flags = p_conn->update_flag;
477 p_ramrod->max_seq_size = cpu_to_le32(p_conn->max_seq_size);
478 dval = p_conn->max_recv_pdu_length;
479 p_ramrod->max_recv_pdu_length = cpu_to_le32(dval);
480 dval = p_conn->max_send_pdu_length;
481 p_ramrod->max_send_pdu_length = cpu_to_le32(dval);
482 dval = p_conn->first_seq_length;
483 p_ramrod->first_seq_length = cpu_to_le32(dval);
484 p_ramrod->exp_stat_sn = cpu_to_le32(p_conn->exp_stat_sn);
485
486 return qed_spq_post(p_hwfn, p_ent, NULL);
487 }
488
489 static int
qed_sp_iscsi_mac_update(struct qed_hwfn * p_hwfn,struct qed_iscsi_conn * p_conn,enum spq_mode comp_mode,struct qed_spq_comp_cb * p_comp_addr)490 qed_sp_iscsi_mac_update(struct qed_hwfn *p_hwfn,
491 struct qed_iscsi_conn *p_conn,
492 enum spq_mode comp_mode,
493 struct qed_spq_comp_cb *p_comp_addr)
494 {
495 struct iscsi_spe_conn_mac_update *p_ramrod = NULL;
496 struct qed_spq_entry *p_ent = NULL;
497 struct qed_sp_init_data init_data;
498 int rc = -EINVAL;
499 u8 ucval;
500
501 /* Get SPQ entry */
502 memset(&init_data, 0, sizeof(init_data));
503 init_data.cid = p_conn->icid;
504 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
505 init_data.comp_mode = comp_mode;
506 init_data.p_comp_data = p_comp_addr;
507
508 rc = qed_sp_init_request(p_hwfn, &p_ent,
509 ISCSI_RAMROD_CMD_ID_MAC_UPDATE,
510 PROTOCOLID_TCP_ULP, &init_data);
511 if (rc)
512 return rc;
513
514 p_ramrod = &p_ent->ramrod.iscsi_conn_mac_update;
515
516 p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id);
517 ucval = p_conn->remote_mac[1];
518 ((u8 *)(&p_ramrod->remote_mac_addr_hi))[0] = ucval;
519 ucval = p_conn->remote_mac[0];
520 ((u8 *)(&p_ramrod->remote_mac_addr_hi))[1] = ucval;
521 ucval = p_conn->remote_mac[3];
522 ((u8 *)(&p_ramrod->remote_mac_addr_mid))[0] = ucval;
523 ucval = p_conn->remote_mac[2];
524 ((u8 *)(&p_ramrod->remote_mac_addr_mid))[1] = ucval;
525 ucval = p_conn->remote_mac[5];
526 ((u8 *)(&p_ramrod->remote_mac_addr_lo))[0] = ucval;
527 ucval = p_conn->remote_mac[4];
528 ((u8 *)(&p_ramrod->remote_mac_addr_lo))[1] = ucval;
529
530 return qed_spq_post(p_hwfn, p_ent, NULL);
531 }
532
qed_sp_iscsi_conn_terminate(struct qed_hwfn * p_hwfn,struct qed_iscsi_conn * p_conn,enum spq_mode comp_mode,struct qed_spq_comp_cb * p_comp_addr)533 static int qed_sp_iscsi_conn_terminate(struct qed_hwfn *p_hwfn,
534 struct qed_iscsi_conn *p_conn,
535 enum spq_mode comp_mode,
536 struct qed_spq_comp_cb *p_comp_addr)
537 {
538 struct iscsi_spe_conn_termination *p_ramrod = NULL;
539 struct qed_spq_entry *p_ent = NULL;
540 struct qed_sp_init_data init_data;
541 int rc = -EINVAL;
542
543 /* Get SPQ entry */
544 memset(&init_data, 0, sizeof(init_data));
545 init_data.cid = p_conn->icid;
546 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
547 init_data.comp_mode = comp_mode;
548 init_data.p_comp_data = p_comp_addr;
549
550 rc = qed_sp_init_request(p_hwfn, &p_ent,
551 ISCSI_RAMROD_CMD_ID_TERMINATION_CONN,
552 PROTOCOLID_TCP_ULP, &init_data);
553 if (rc)
554 return rc;
555
556 p_ramrod = &p_ent->ramrod.iscsi_conn_terminate;
557
558 p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id);
559 p_ramrod->abortive = p_conn->abortive_dsconnect;
560
561 DMA_REGPAIR_LE(p_ramrod->query_params_addr,
562 p_conn->tcp_upload_params_phys_addr);
563 DMA_REGPAIR_LE(p_ramrod->queue_cnts_addr, p_conn->queue_cnts_phys_addr);
564
565 return qed_spq_post(p_hwfn, p_ent, NULL);
566 }
567
qed_sp_iscsi_conn_clear_sq(struct qed_hwfn * p_hwfn,struct qed_iscsi_conn * p_conn,enum spq_mode comp_mode,struct qed_spq_comp_cb * p_comp_addr)568 static int qed_sp_iscsi_conn_clear_sq(struct qed_hwfn *p_hwfn,
569 struct qed_iscsi_conn *p_conn,
570 enum spq_mode comp_mode,
571 struct qed_spq_comp_cb *p_comp_addr)
572 {
573 struct qed_spq_entry *p_ent = NULL;
574 struct qed_sp_init_data init_data;
575 int rc = -EINVAL;
576
577 /* Get SPQ entry */
578 memset(&init_data, 0, sizeof(init_data));
579 init_data.cid = p_conn->icid;
580 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
581 init_data.comp_mode = comp_mode;
582 init_data.p_comp_data = p_comp_addr;
583
584 rc = qed_sp_init_request(p_hwfn, &p_ent,
585 ISCSI_RAMROD_CMD_ID_CLEAR_SQ,
586 PROTOCOLID_TCP_ULP, &init_data);
587 if (rc)
588 return rc;
589
590 return qed_spq_post(p_hwfn, p_ent, NULL);
591 }
592
qed_sp_iscsi_func_stop(struct qed_hwfn * p_hwfn,enum spq_mode comp_mode,struct qed_spq_comp_cb * p_comp_addr)593 static int qed_sp_iscsi_func_stop(struct qed_hwfn *p_hwfn,
594 enum spq_mode comp_mode,
595 struct qed_spq_comp_cb *p_comp_addr)
596 {
597 struct qed_spq_entry *p_ent = NULL;
598 struct qed_sp_init_data init_data;
599 int rc = 0;
600
601 /* Get SPQ entry */
602 memset(&init_data, 0, sizeof(init_data));
603 init_data.cid = qed_spq_get_cid(p_hwfn);
604 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
605 init_data.comp_mode = comp_mode;
606 init_data.p_comp_data = p_comp_addr;
607
608 rc = qed_sp_init_request(p_hwfn, &p_ent,
609 ISCSI_RAMROD_CMD_ID_DESTROY_FUNC,
610 PROTOCOLID_TCP_ULP, &init_data);
611 if (rc)
612 return rc;
613
614 rc = qed_spq_post(p_hwfn, p_ent, NULL);
615
616 qed_spq_unregister_async_cb(p_hwfn, PROTOCOLID_TCP_ULP);
617 return rc;
618 }
619
qed_iscsi_get_db_addr(struct qed_hwfn * p_hwfn,u32 cid)620 static void __iomem *qed_iscsi_get_db_addr(struct qed_hwfn *p_hwfn, u32 cid)
621 {
622 return (u8 __iomem *)p_hwfn->doorbells +
623 qed_db_addr(cid, DQ_DEMS_LEGACY);
624 }
625
qed_iscsi_get_primary_bdq_prod(struct qed_hwfn * p_hwfn,u8 bdq_id)626 static void __iomem *qed_iscsi_get_primary_bdq_prod(struct qed_hwfn *p_hwfn,
627 u8 bdq_id)
628 {
629 if (RESC_NUM(p_hwfn, QED_BDQ)) {
630 return (u8 __iomem *)p_hwfn->regview +
631 GET_GTT_BDQ_REG_ADDR(GTT_BAR0_MAP_REG_MSDM_RAM,
632 MSTORM_SCSI_BDQ_EXT_PROD,
633 RESC_START(p_hwfn, QED_BDQ), bdq_id);
634 } else {
635 DP_NOTICE(p_hwfn, "BDQ is not allocated!\n");
636 return NULL;
637 }
638 }
639
qed_iscsi_get_secondary_bdq_prod(struct qed_hwfn * p_hwfn,u8 bdq_id)640 static void __iomem *qed_iscsi_get_secondary_bdq_prod(struct qed_hwfn *p_hwfn,
641 u8 bdq_id)
642 {
643 if (RESC_NUM(p_hwfn, QED_BDQ)) {
644 return (u8 __iomem *)p_hwfn->regview +
645 GET_GTT_BDQ_REG_ADDR(GTT_BAR0_MAP_REG_TSDM_RAM,
646 TSTORM_SCSI_BDQ_EXT_PROD,
647 RESC_START(p_hwfn, QED_BDQ), bdq_id);
648 } else {
649 DP_NOTICE(p_hwfn, "BDQ is not allocated!\n");
650 return NULL;
651 }
652 }
653
qed_iscsi_setup_connection(struct qed_iscsi_conn * p_conn)654 static int qed_iscsi_setup_connection(struct qed_iscsi_conn *p_conn)
655 {
656 if (!p_conn->queue_cnts_virt_addr)
657 goto nomem;
658 memset(p_conn->queue_cnts_virt_addr, 0,
659 sizeof(*p_conn->queue_cnts_virt_addr));
660
661 if (!p_conn->tcp_upload_params_virt_addr)
662 goto nomem;
663 memset(p_conn->tcp_upload_params_virt_addr, 0,
664 sizeof(*p_conn->tcp_upload_params_virt_addr));
665
666 if (!p_conn->r2tq.p_virt_addr)
667 goto nomem;
668 qed_chain_pbl_zero_mem(&p_conn->r2tq);
669
670 if (!p_conn->uhq.p_virt_addr)
671 goto nomem;
672 qed_chain_pbl_zero_mem(&p_conn->uhq);
673
674 if (!p_conn->xhq.p_virt_addr)
675 goto nomem;
676 qed_chain_pbl_zero_mem(&p_conn->xhq);
677
678 return 0;
679 nomem:
680 return -ENOMEM;
681 }
682
qed_iscsi_allocate_connection(struct qed_hwfn * p_hwfn,struct qed_iscsi_conn ** p_out_conn)683 static int qed_iscsi_allocate_connection(struct qed_hwfn *p_hwfn,
684 struct qed_iscsi_conn **p_out_conn)
685 {
686 struct scsi_terminate_extra_params *p_q_cnts = NULL;
687 struct qed_iscsi_pf_params *p_params = NULL;
688 struct qed_chain_init_params params = {
689 .mode = QED_CHAIN_MODE_PBL,
690 .intended_use = QED_CHAIN_USE_TO_CONSUME_PRODUCE,
691 .cnt_type = QED_CHAIN_CNT_TYPE_U16,
692 };
693 struct tcp_upload_params *p_tcp = NULL;
694 struct qed_iscsi_conn *p_conn = NULL;
695 int rc = 0;
696
697 /* Try finding a free connection that can be used */
698 spin_lock_bh(&p_hwfn->p_iscsi_info->lock);
699 if (!list_empty(&p_hwfn->p_iscsi_info->free_list))
700 p_conn = list_first_entry(&p_hwfn->p_iscsi_info->free_list,
701 struct qed_iscsi_conn, list_entry);
702 if (p_conn) {
703 list_del(&p_conn->list_entry);
704 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock);
705 *p_out_conn = p_conn;
706 return 0;
707 }
708 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock);
709
710 /* Need to allocate a new connection */
711 p_params = &p_hwfn->pf_params.iscsi_pf_params;
712
713 p_conn = kzalloc(sizeof(*p_conn), GFP_KERNEL);
714 if (!p_conn)
715 return -ENOMEM;
716
717 p_q_cnts = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev,
718 sizeof(*p_q_cnts),
719 &p_conn->queue_cnts_phys_addr,
720 GFP_KERNEL);
721 if (!p_q_cnts)
722 goto nomem_queue_cnts_param;
723 p_conn->queue_cnts_virt_addr = p_q_cnts;
724
725 p_tcp = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev,
726 sizeof(*p_tcp),
727 &p_conn->tcp_upload_params_phys_addr,
728 GFP_KERNEL);
729 if (!p_tcp)
730 goto nomem_upload_param;
731 p_conn->tcp_upload_params_virt_addr = p_tcp;
732
733 params.num_elems = p_params->num_r2tq_pages_in_ring *
734 QED_CHAIN_PAGE_SIZE / sizeof(struct iscsi_wqe);
735 params.elem_size = sizeof(struct iscsi_wqe);
736
737 rc = qed_chain_alloc(p_hwfn->cdev, &p_conn->r2tq, ¶ms);
738 if (rc)
739 goto nomem_r2tq;
740
741 params.num_elems = p_params->num_uhq_pages_in_ring *
742 QED_CHAIN_PAGE_SIZE / sizeof(struct iscsi_uhqe);
743 params.elem_size = sizeof(struct iscsi_uhqe);
744
745 rc = qed_chain_alloc(p_hwfn->cdev, &p_conn->uhq, ¶ms);
746 if (rc)
747 goto nomem_uhq;
748
749 params.elem_size = sizeof(struct iscsi_xhqe);
750
751 rc = qed_chain_alloc(p_hwfn->cdev, &p_conn->xhq, ¶ms);
752 if (rc)
753 goto nomem;
754
755 p_conn->free_on_delete = true;
756 *p_out_conn = p_conn;
757 return 0;
758
759 nomem:
760 qed_chain_free(p_hwfn->cdev, &p_conn->uhq);
761 nomem_uhq:
762 qed_chain_free(p_hwfn->cdev, &p_conn->r2tq);
763 nomem_r2tq:
764 dma_free_coherent(&p_hwfn->cdev->pdev->dev,
765 sizeof(struct tcp_upload_params),
766 p_conn->tcp_upload_params_virt_addr,
767 p_conn->tcp_upload_params_phys_addr);
768 nomem_upload_param:
769 dma_free_coherent(&p_hwfn->cdev->pdev->dev,
770 sizeof(struct scsi_terminate_extra_params),
771 p_conn->queue_cnts_virt_addr,
772 p_conn->queue_cnts_phys_addr);
773 nomem_queue_cnts_param:
774 kfree(p_conn);
775
776 return -ENOMEM;
777 }
778
qed_iscsi_acquire_connection(struct qed_hwfn * p_hwfn,struct qed_iscsi_conn * p_in_conn,struct qed_iscsi_conn ** p_out_conn)779 static int qed_iscsi_acquire_connection(struct qed_hwfn *p_hwfn,
780 struct qed_iscsi_conn *p_in_conn,
781 struct qed_iscsi_conn **p_out_conn)
782 {
783 struct qed_iscsi_conn *p_conn = NULL;
784 int rc = 0;
785 u32 icid;
786
787 spin_lock_bh(&p_hwfn->p_iscsi_info->lock);
788 rc = qed_cxt_acquire_cid(p_hwfn, PROTOCOLID_TCP_ULP, &icid);
789 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock);
790 if (rc)
791 return rc;
792
793 /* Use input connection or allocate a new one */
794 if (p_in_conn)
795 p_conn = p_in_conn;
796 else
797 rc = qed_iscsi_allocate_connection(p_hwfn, &p_conn);
798
799 if (!rc)
800 rc = qed_iscsi_setup_connection(p_conn);
801
802 if (rc) {
803 spin_lock_bh(&p_hwfn->p_iscsi_info->lock);
804 qed_cxt_release_cid(p_hwfn, icid);
805 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock);
806 return rc;
807 }
808
809 p_conn->icid = icid;
810 p_conn->conn_id = (u16)icid;
811 p_conn->fw_cid = (p_hwfn->hw_info.opaque_fid << 16) | icid;
812
813 *p_out_conn = p_conn;
814
815 return rc;
816 }
817
qed_iscsi_release_connection(struct qed_hwfn * p_hwfn,struct qed_iscsi_conn * p_conn)818 static void qed_iscsi_release_connection(struct qed_hwfn *p_hwfn,
819 struct qed_iscsi_conn *p_conn)
820 {
821 spin_lock_bh(&p_hwfn->p_iscsi_info->lock);
822 list_add_tail(&p_conn->list_entry, &p_hwfn->p_iscsi_info->free_list);
823 qed_cxt_release_cid(p_hwfn, p_conn->icid);
824 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock);
825 }
826
qed_iscsi_free_connection(struct qed_hwfn * p_hwfn,struct qed_iscsi_conn * p_conn)827 static void qed_iscsi_free_connection(struct qed_hwfn *p_hwfn,
828 struct qed_iscsi_conn *p_conn)
829 {
830 qed_chain_free(p_hwfn->cdev, &p_conn->xhq);
831 qed_chain_free(p_hwfn->cdev, &p_conn->uhq);
832 qed_chain_free(p_hwfn->cdev, &p_conn->r2tq);
833 dma_free_coherent(&p_hwfn->cdev->pdev->dev,
834 sizeof(struct tcp_upload_params),
835 p_conn->tcp_upload_params_virt_addr,
836 p_conn->tcp_upload_params_phys_addr);
837 dma_free_coherent(&p_hwfn->cdev->pdev->dev,
838 sizeof(struct scsi_terminate_extra_params),
839 p_conn->queue_cnts_virt_addr,
840 p_conn->queue_cnts_phys_addr);
841 kfree(p_conn);
842 }
843
qed_iscsi_alloc(struct qed_hwfn * p_hwfn)844 int qed_iscsi_alloc(struct qed_hwfn *p_hwfn)
845 {
846 struct qed_iscsi_info *p_iscsi_info;
847
848 p_iscsi_info = kzalloc(sizeof(*p_iscsi_info), GFP_KERNEL);
849 if (!p_iscsi_info)
850 return -ENOMEM;
851
852 INIT_LIST_HEAD(&p_iscsi_info->free_list);
853
854 p_hwfn->p_iscsi_info = p_iscsi_info;
855 return 0;
856 }
857
qed_iscsi_setup(struct qed_hwfn * p_hwfn)858 void qed_iscsi_setup(struct qed_hwfn *p_hwfn)
859 {
860 spin_lock_init(&p_hwfn->p_iscsi_info->lock);
861 }
862
qed_iscsi_free(struct qed_hwfn * p_hwfn)863 void qed_iscsi_free(struct qed_hwfn *p_hwfn)
864 {
865 struct qed_iscsi_conn *p_conn = NULL;
866
867 if (!p_hwfn->p_iscsi_info)
868 return;
869
870 while (!list_empty(&p_hwfn->p_iscsi_info->free_list)) {
871 p_conn = list_first_entry(&p_hwfn->p_iscsi_info->free_list,
872 struct qed_iscsi_conn, list_entry);
873 if (p_conn) {
874 list_del(&p_conn->list_entry);
875 qed_iscsi_free_connection(p_hwfn, p_conn);
876 }
877 }
878
879 kfree(p_hwfn->p_iscsi_info);
880 p_hwfn->p_iscsi_info = NULL;
881 }
882
_qed_iscsi_get_tstats(struct qed_hwfn * p_hwfn,struct qed_ptt * p_ptt,struct qed_iscsi_stats * p_stats)883 static void _qed_iscsi_get_tstats(struct qed_hwfn *p_hwfn,
884 struct qed_ptt *p_ptt,
885 struct qed_iscsi_stats *p_stats)
886 {
887 struct tstorm_iscsi_stats_drv tstats;
888 u32 tstats_addr;
889
890 memset(&tstats, 0, sizeof(tstats));
891 tstats_addr = BAR0_MAP_REG_TSDM_RAM +
892 TSTORM_ISCSI_RX_STATS_OFFSET(p_hwfn->rel_pf_id);
893 qed_memcpy_from(p_hwfn, p_ptt, &tstats, tstats_addr, sizeof(tstats));
894
895 p_stats->iscsi_rx_bytes_cnt =
896 HILO_64_REGPAIR(tstats.iscsi_rx_bytes_cnt);
897 p_stats->iscsi_rx_packet_cnt =
898 HILO_64_REGPAIR(tstats.iscsi_rx_packet_cnt);
899 p_stats->iscsi_rx_new_ooo_isle_events_cnt =
900 HILO_64_REGPAIR(tstats.iscsi_rx_new_ooo_isle_events_cnt);
901 p_stats->iscsi_cmdq_threshold_cnt =
902 le32_to_cpu(tstats.iscsi_cmdq_threshold_cnt);
903 p_stats->iscsi_rq_threshold_cnt =
904 le32_to_cpu(tstats.iscsi_rq_threshold_cnt);
905 p_stats->iscsi_immq_threshold_cnt =
906 le32_to_cpu(tstats.iscsi_immq_threshold_cnt);
907 }
908
_qed_iscsi_get_mstats(struct qed_hwfn * p_hwfn,struct qed_ptt * p_ptt,struct qed_iscsi_stats * p_stats)909 static void _qed_iscsi_get_mstats(struct qed_hwfn *p_hwfn,
910 struct qed_ptt *p_ptt,
911 struct qed_iscsi_stats *p_stats)
912 {
913 struct mstorm_iscsi_stats_drv mstats;
914 u32 mstats_addr;
915
916 memset(&mstats, 0, sizeof(mstats));
917 mstats_addr = BAR0_MAP_REG_MSDM_RAM +
918 MSTORM_ISCSI_RX_STATS_OFFSET(p_hwfn->rel_pf_id);
919 qed_memcpy_from(p_hwfn, p_ptt, &mstats, mstats_addr, sizeof(mstats));
920
921 p_stats->iscsi_rx_dropped_pdus_task_not_valid =
922 HILO_64_REGPAIR(mstats.iscsi_rx_dropped_pdus_task_not_valid);
923 }
924
_qed_iscsi_get_ustats(struct qed_hwfn * p_hwfn,struct qed_ptt * p_ptt,struct qed_iscsi_stats * p_stats)925 static void _qed_iscsi_get_ustats(struct qed_hwfn *p_hwfn,
926 struct qed_ptt *p_ptt,
927 struct qed_iscsi_stats *p_stats)
928 {
929 struct ustorm_iscsi_stats_drv ustats;
930 u32 ustats_addr;
931
932 memset(&ustats, 0, sizeof(ustats));
933 ustats_addr = BAR0_MAP_REG_USDM_RAM +
934 USTORM_ISCSI_RX_STATS_OFFSET(p_hwfn->rel_pf_id);
935 qed_memcpy_from(p_hwfn, p_ptt, &ustats, ustats_addr, sizeof(ustats));
936
937 p_stats->iscsi_rx_data_pdu_cnt =
938 HILO_64_REGPAIR(ustats.iscsi_rx_data_pdu_cnt);
939 p_stats->iscsi_rx_r2t_pdu_cnt =
940 HILO_64_REGPAIR(ustats.iscsi_rx_r2t_pdu_cnt);
941 p_stats->iscsi_rx_total_pdu_cnt =
942 HILO_64_REGPAIR(ustats.iscsi_rx_total_pdu_cnt);
943 }
944
_qed_iscsi_get_xstats(struct qed_hwfn * p_hwfn,struct qed_ptt * p_ptt,struct qed_iscsi_stats * p_stats)945 static void _qed_iscsi_get_xstats(struct qed_hwfn *p_hwfn,
946 struct qed_ptt *p_ptt,
947 struct qed_iscsi_stats *p_stats)
948 {
949 struct xstorm_iscsi_stats_drv xstats;
950 u32 xstats_addr;
951
952 memset(&xstats, 0, sizeof(xstats));
953 xstats_addr = BAR0_MAP_REG_XSDM_RAM +
954 XSTORM_ISCSI_TX_STATS_OFFSET(p_hwfn->rel_pf_id);
955 qed_memcpy_from(p_hwfn, p_ptt, &xstats, xstats_addr, sizeof(xstats));
956
957 p_stats->iscsi_tx_go_to_slow_start_event_cnt =
958 HILO_64_REGPAIR(xstats.iscsi_tx_go_to_slow_start_event_cnt);
959 p_stats->iscsi_tx_fast_retransmit_event_cnt =
960 HILO_64_REGPAIR(xstats.iscsi_tx_fast_retransmit_event_cnt);
961 }
962
_qed_iscsi_get_ystats(struct qed_hwfn * p_hwfn,struct qed_ptt * p_ptt,struct qed_iscsi_stats * p_stats)963 static void _qed_iscsi_get_ystats(struct qed_hwfn *p_hwfn,
964 struct qed_ptt *p_ptt,
965 struct qed_iscsi_stats *p_stats)
966 {
967 struct ystorm_iscsi_stats_drv ystats;
968 u32 ystats_addr;
969
970 memset(&ystats, 0, sizeof(ystats));
971 ystats_addr = BAR0_MAP_REG_YSDM_RAM +
972 YSTORM_ISCSI_TX_STATS_OFFSET(p_hwfn->rel_pf_id);
973 qed_memcpy_from(p_hwfn, p_ptt, &ystats, ystats_addr, sizeof(ystats));
974
975 p_stats->iscsi_tx_data_pdu_cnt =
976 HILO_64_REGPAIR(ystats.iscsi_tx_data_pdu_cnt);
977 p_stats->iscsi_tx_r2t_pdu_cnt =
978 HILO_64_REGPAIR(ystats.iscsi_tx_r2t_pdu_cnt);
979 p_stats->iscsi_tx_total_pdu_cnt =
980 HILO_64_REGPAIR(ystats.iscsi_tx_total_pdu_cnt);
981 }
982
_qed_iscsi_get_pstats(struct qed_hwfn * p_hwfn,struct qed_ptt * p_ptt,struct qed_iscsi_stats * p_stats)983 static void _qed_iscsi_get_pstats(struct qed_hwfn *p_hwfn,
984 struct qed_ptt *p_ptt,
985 struct qed_iscsi_stats *p_stats)
986 {
987 struct pstorm_iscsi_stats_drv pstats;
988 u32 pstats_addr;
989
990 memset(&pstats, 0, sizeof(pstats));
991 pstats_addr = BAR0_MAP_REG_PSDM_RAM +
992 PSTORM_ISCSI_TX_STATS_OFFSET(p_hwfn->rel_pf_id);
993 qed_memcpy_from(p_hwfn, p_ptt, &pstats, pstats_addr, sizeof(pstats));
994
995 p_stats->iscsi_tx_bytes_cnt =
996 HILO_64_REGPAIR(pstats.iscsi_tx_bytes_cnt);
997 p_stats->iscsi_tx_packet_cnt =
998 HILO_64_REGPAIR(pstats.iscsi_tx_packet_cnt);
999 }
1000
qed_iscsi_get_stats(struct qed_hwfn * p_hwfn,struct qed_iscsi_stats * stats,bool is_atomic)1001 static int qed_iscsi_get_stats(struct qed_hwfn *p_hwfn,
1002 struct qed_iscsi_stats *stats,
1003 bool is_atomic)
1004 {
1005 struct qed_ptt *p_ptt;
1006
1007 memset(stats, 0, sizeof(*stats));
1008
1009 p_ptt = qed_ptt_acquire_context(p_hwfn, is_atomic);
1010 if (!p_ptt) {
1011 DP_ERR(p_hwfn, "Failed to acquire ptt\n");
1012 return -EAGAIN;
1013 }
1014
1015 _qed_iscsi_get_tstats(p_hwfn, p_ptt, stats);
1016 _qed_iscsi_get_mstats(p_hwfn, p_ptt, stats);
1017 _qed_iscsi_get_ustats(p_hwfn, p_ptt, stats);
1018
1019 _qed_iscsi_get_xstats(p_hwfn, p_ptt, stats);
1020 _qed_iscsi_get_ystats(p_hwfn, p_ptt, stats);
1021 _qed_iscsi_get_pstats(p_hwfn, p_ptt, stats);
1022
1023 qed_ptt_release(p_hwfn, p_ptt);
1024
1025 return 0;
1026 }
1027
1028 struct qed_hash_iscsi_con {
1029 struct hlist_node node;
1030 struct qed_iscsi_conn *con;
1031 };
1032
qed_fill_iscsi_dev_info(struct qed_dev * cdev,struct qed_dev_iscsi_info * info)1033 static int qed_fill_iscsi_dev_info(struct qed_dev *cdev,
1034 struct qed_dev_iscsi_info *info)
1035 {
1036 struct qed_hwfn *hwfn = QED_AFFIN_HWFN(cdev);
1037
1038 int rc;
1039
1040 memset(info, 0, sizeof(*info));
1041 rc = qed_fill_dev_info(cdev, &info->common);
1042
1043 info->primary_dbq_rq_addr =
1044 qed_iscsi_get_primary_bdq_prod(hwfn, BDQ_ID_RQ);
1045 info->secondary_bdq_rq_addr =
1046 qed_iscsi_get_secondary_bdq_prod(hwfn, BDQ_ID_RQ);
1047
1048 info->num_cqs = FEAT_NUM(hwfn, QED_ISCSI_CQ);
1049
1050 return rc;
1051 }
1052
qed_register_iscsi_ops(struct qed_dev * cdev,struct qed_iscsi_cb_ops * ops,void * cookie)1053 static void qed_register_iscsi_ops(struct qed_dev *cdev,
1054 struct qed_iscsi_cb_ops *ops, void *cookie)
1055 {
1056 cdev->protocol_ops.iscsi = ops;
1057 cdev->ops_cookie = cookie;
1058 }
1059
qed_iscsi_get_hash(struct qed_dev * cdev,u32 handle)1060 static struct qed_hash_iscsi_con *qed_iscsi_get_hash(struct qed_dev *cdev,
1061 u32 handle)
1062 {
1063 struct qed_hash_iscsi_con *hash_con = NULL;
1064
1065 if (!(cdev->flags & QED_FLAG_STORAGE_STARTED))
1066 return NULL;
1067
1068 hash_for_each_possible(cdev->connections, hash_con, node, handle) {
1069 if (hash_con->con->icid == handle)
1070 break;
1071 }
1072
1073 if (!hash_con || (hash_con->con->icid != handle))
1074 return NULL;
1075
1076 return hash_con;
1077 }
1078
qed_iscsi_stop(struct qed_dev * cdev)1079 static int qed_iscsi_stop(struct qed_dev *cdev)
1080 {
1081 int rc;
1082
1083 if (!(cdev->flags & QED_FLAG_STORAGE_STARTED)) {
1084 DP_NOTICE(cdev, "iscsi already stopped\n");
1085 return 0;
1086 }
1087
1088 if (!hash_empty(cdev->connections)) {
1089 DP_NOTICE(cdev,
1090 "Can't stop iscsi - not all connections were returned\n");
1091 return -EINVAL;
1092 }
1093
1094 /* Stop the iscsi */
1095 rc = qed_sp_iscsi_func_stop(QED_AFFIN_HWFN(cdev), QED_SPQ_MODE_EBLOCK,
1096 NULL);
1097 cdev->flags &= ~QED_FLAG_STORAGE_STARTED;
1098
1099 return rc;
1100 }
1101
qed_iscsi_start(struct qed_dev * cdev,struct qed_iscsi_tid * tasks,void * event_context,iscsi_event_cb_t async_event_cb)1102 static int qed_iscsi_start(struct qed_dev *cdev,
1103 struct qed_iscsi_tid *tasks,
1104 void *event_context,
1105 iscsi_event_cb_t async_event_cb)
1106 {
1107 int rc;
1108 struct qed_tid_mem *tid_info;
1109
1110 if (cdev->flags & QED_FLAG_STORAGE_STARTED) {
1111 DP_NOTICE(cdev, "iscsi already started;\n");
1112 return 0;
1113 }
1114
1115 rc = qed_sp_iscsi_func_start(QED_AFFIN_HWFN(cdev), QED_SPQ_MODE_EBLOCK,
1116 NULL, event_context, async_event_cb);
1117 if (rc) {
1118 DP_NOTICE(cdev, "Failed to start iscsi\n");
1119 return rc;
1120 }
1121
1122 cdev->flags |= QED_FLAG_STORAGE_STARTED;
1123 hash_init(cdev->connections);
1124
1125 if (!tasks)
1126 return 0;
1127
1128 tid_info = kzalloc(sizeof(*tid_info), GFP_KERNEL);
1129
1130 if (!tid_info) {
1131 qed_iscsi_stop(cdev);
1132 return -ENOMEM;
1133 }
1134
1135 rc = qed_cxt_get_tid_mem_info(QED_AFFIN_HWFN(cdev), tid_info);
1136 if (rc) {
1137 DP_NOTICE(cdev, "Failed to gather task information\n");
1138 qed_iscsi_stop(cdev);
1139 kfree(tid_info);
1140 return rc;
1141 }
1142
1143 /* Fill task information */
1144 tasks->size = tid_info->tid_size;
1145 tasks->num_tids_per_block = tid_info->num_tids_per_block;
1146 memcpy(tasks->blocks, tid_info->blocks,
1147 MAX_TID_BLOCKS_ISCSI * sizeof(u8 *));
1148
1149 kfree(tid_info);
1150
1151 return 0;
1152 }
1153
qed_iscsi_acquire_conn(struct qed_dev * cdev,u32 * handle,u32 * fw_cid,void __iomem ** p_doorbell)1154 static int qed_iscsi_acquire_conn(struct qed_dev *cdev,
1155 u32 *handle,
1156 u32 *fw_cid, void __iomem **p_doorbell)
1157 {
1158 struct qed_hash_iscsi_con *hash_con;
1159 int rc;
1160
1161 /* Allocate a hashed connection */
1162 hash_con = kzalloc(sizeof(*hash_con), GFP_ATOMIC);
1163 if (!hash_con)
1164 return -ENOMEM;
1165
1166 /* Acquire the connection */
1167 rc = qed_iscsi_acquire_connection(QED_AFFIN_HWFN(cdev), NULL,
1168 &hash_con->con);
1169 if (rc) {
1170 DP_NOTICE(cdev, "Failed to acquire Connection\n");
1171 kfree(hash_con);
1172 return rc;
1173 }
1174
1175 /* Added the connection to hash table */
1176 *handle = hash_con->con->icid;
1177 *fw_cid = hash_con->con->fw_cid;
1178 hash_add(cdev->connections, &hash_con->node, *handle);
1179
1180 if (p_doorbell)
1181 *p_doorbell = qed_iscsi_get_db_addr(QED_AFFIN_HWFN(cdev),
1182 *handle);
1183
1184 return 0;
1185 }
1186
qed_iscsi_release_conn(struct qed_dev * cdev,u32 handle)1187 static int qed_iscsi_release_conn(struct qed_dev *cdev, u32 handle)
1188 {
1189 struct qed_hash_iscsi_con *hash_con;
1190
1191 hash_con = qed_iscsi_get_hash(cdev, handle);
1192 if (!hash_con) {
1193 DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
1194 handle);
1195 return -EINVAL;
1196 }
1197
1198 hlist_del(&hash_con->node);
1199 qed_iscsi_release_connection(QED_AFFIN_HWFN(cdev), hash_con->con);
1200 kfree(hash_con);
1201
1202 return 0;
1203 }
1204
qed_iscsi_offload_conn(struct qed_dev * cdev,u32 handle,struct qed_iscsi_params_offload * conn_info)1205 static int qed_iscsi_offload_conn(struct qed_dev *cdev,
1206 u32 handle,
1207 struct qed_iscsi_params_offload *conn_info)
1208 {
1209 struct qed_hash_iscsi_con *hash_con;
1210 struct qed_iscsi_conn *con;
1211
1212 hash_con = qed_iscsi_get_hash(cdev, handle);
1213 if (!hash_con) {
1214 DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
1215 handle);
1216 return -EINVAL;
1217 }
1218
1219 /* Update the connection with information from the params */
1220 con = hash_con->con;
1221
1222 ether_addr_copy(con->local_mac, conn_info->src.mac);
1223 ether_addr_copy(con->remote_mac, conn_info->dst.mac);
1224 memcpy(con->local_ip, conn_info->src.ip, sizeof(con->local_ip));
1225 memcpy(con->remote_ip, conn_info->dst.ip, sizeof(con->remote_ip));
1226 con->local_port = conn_info->src.port;
1227 con->remote_port = conn_info->dst.port;
1228
1229 con->layer_code = conn_info->layer_code;
1230 con->sq_pbl_addr = conn_info->sq_pbl_addr;
1231 con->initial_ack = conn_info->initial_ack;
1232 con->vlan_id = conn_info->vlan_id;
1233 con->tcp_flags = conn_info->tcp_flags;
1234 con->ip_version = conn_info->ip_version;
1235 con->default_cq = conn_info->default_cq;
1236 con->ka_max_probe_cnt = conn_info->ka_max_probe_cnt;
1237 con->dup_ack_theshold = conn_info->dup_ack_theshold;
1238 con->rcv_next = conn_info->rcv_next;
1239 con->snd_una = conn_info->snd_una;
1240 con->snd_next = conn_info->snd_next;
1241 con->snd_max = conn_info->snd_max;
1242 con->snd_wnd = conn_info->snd_wnd;
1243 con->rcv_wnd = conn_info->rcv_wnd;
1244 con->snd_wl1 = conn_info->snd_wl1;
1245 con->cwnd = conn_info->cwnd;
1246 con->ss_thresh = conn_info->ss_thresh;
1247 con->srtt = conn_info->srtt;
1248 con->rtt_var = conn_info->rtt_var;
1249 con->ts_recent = conn_info->ts_recent;
1250 con->ts_recent_age = conn_info->ts_recent_age;
1251 con->total_rt = conn_info->total_rt;
1252 con->ka_timeout_delta = conn_info->ka_timeout_delta;
1253 con->rt_timeout_delta = conn_info->rt_timeout_delta;
1254 con->dup_ack_cnt = conn_info->dup_ack_cnt;
1255 con->snd_wnd_probe_cnt = conn_info->snd_wnd_probe_cnt;
1256 con->ka_probe_cnt = conn_info->ka_probe_cnt;
1257 con->rt_cnt = conn_info->rt_cnt;
1258 con->flow_label = conn_info->flow_label;
1259 con->ka_timeout = conn_info->ka_timeout;
1260 con->ka_interval = conn_info->ka_interval;
1261 con->max_rt_time = conn_info->max_rt_time;
1262 con->initial_rcv_wnd = conn_info->initial_rcv_wnd;
1263 con->ttl = conn_info->ttl;
1264 con->tos_or_tc = conn_info->tos_or_tc;
1265 con->remote_port = conn_info->remote_port;
1266 con->local_port = conn_info->local_port;
1267 con->mss = conn_info->mss;
1268 con->snd_wnd_scale = conn_info->snd_wnd_scale;
1269 con->rcv_wnd_scale = conn_info->rcv_wnd_scale;
1270 con->da_timeout_value = conn_info->da_timeout_value;
1271 con->ack_frequency = conn_info->ack_frequency;
1272
1273 /* Set default values on other connection fields */
1274 con->offl_flags = 0x1;
1275
1276 return qed_sp_iscsi_conn_offload(QED_AFFIN_HWFN(cdev), con,
1277 QED_SPQ_MODE_EBLOCK, NULL);
1278 }
1279
qed_iscsi_update_conn(struct qed_dev * cdev,u32 handle,struct qed_iscsi_params_update * conn_info)1280 static int qed_iscsi_update_conn(struct qed_dev *cdev,
1281 u32 handle,
1282 struct qed_iscsi_params_update *conn_info)
1283 {
1284 struct qed_hash_iscsi_con *hash_con;
1285 struct qed_iscsi_conn *con;
1286
1287 hash_con = qed_iscsi_get_hash(cdev, handle);
1288 if (!hash_con) {
1289 DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
1290 handle);
1291 return -EINVAL;
1292 }
1293
1294 /* Update the connection with information from the params */
1295 con = hash_con->con;
1296 con->update_flag = conn_info->update_flag;
1297 con->max_seq_size = conn_info->max_seq_size;
1298 con->max_recv_pdu_length = conn_info->max_recv_pdu_length;
1299 con->max_send_pdu_length = conn_info->max_send_pdu_length;
1300 con->first_seq_length = conn_info->first_seq_length;
1301 con->exp_stat_sn = conn_info->exp_stat_sn;
1302
1303 return qed_sp_iscsi_conn_update(QED_AFFIN_HWFN(cdev), con,
1304 QED_SPQ_MODE_EBLOCK, NULL);
1305 }
1306
qed_iscsi_clear_conn_sq(struct qed_dev * cdev,u32 handle)1307 static int qed_iscsi_clear_conn_sq(struct qed_dev *cdev, u32 handle)
1308 {
1309 struct qed_hash_iscsi_con *hash_con;
1310
1311 hash_con = qed_iscsi_get_hash(cdev, handle);
1312 if (!hash_con) {
1313 DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
1314 handle);
1315 return -EINVAL;
1316 }
1317
1318 return qed_sp_iscsi_conn_clear_sq(QED_AFFIN_HWFN(cdev), hash_con->con,
1319 QED_SPQ_MODE_EBLOCK, NULL);
1320 }
1321
qed_iscsi_destroy_conn(struct qed_dev * cdev,u32 handle,u8 abrt_conn)1322 static int qed_iscsi_destroy_conn(struct qed_dev *cdev,
1323 u32 handle, u8 abrt_conn)
1324 {
1325 struct qed_hash_iscsi_con *hash_con;
1326
1327 hash_con = qed_iscsi_get_hash(cdev, handle);
1328 if (!hash_con) {
1329 DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
1330 handle);
1331 return -EINVAL;
1332 }
1333
1334 hash_con->con->abortive_dsconnect = abrt_conn;
1335
1336 return qed_sp_iscsi_conn_terminate(QED_AFFIN_HWFN(cdev), hash_con->con,
1337 QED_SPQ_MODE_EBLOCK, NULL);
1338 }
1339
qed_iscsi_stats_context(struct qed_dev * cdev,struct qed_iscsi_stats * stats,bool is_atomic)1340 static int qed_iscsi_stats_context(struct qed_dev *cdev,
1341 struct qed_iscsi_stats *stats,
1342 bool is_atomic)
1343 {
1344 return qed_iscsi_get_stats(QED_AFFIN_HWFN(cdev), stats, is_atomic);
1345 }
1346
qed_iscsi_stats(struct qed_dev * cdev,struct qed_iscsi_stats * stats)1347 static int qed_iscsi_stats(struct qed_dev *cdev, struct qed_iscsi_stats *stats)
1348 {
1349 return qed_iscsi_stats_context(cdev, stats, false);
1350 }
1351
qed_iscsi_change_mac(struct qed_dev * cdev,u32 handle,const u8 * mac)1352 static int qed_iscsi_change_mac(struct qed_dev *cdev,
1353 u32 handle, const u8 *mac)
1354 {
1355 struct qed_hash_iscsi_con *hash_con;
1356
1357 hash_con = qed_iscsi_get_hash(cdev, handle);
1358 if (!hash_con) {
1359 DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
1360 handle);
1361 return -EINVAL;
1362 }
1363
1364 return qed_sp_iscsi_mac_update(QED_AFFIN_HWFN(cdev), hash_con->con,
1365 QED_SPQ_MODE_EBLOCK, NULL);
1366 }
1367
qed_get_protocol_stats_iscsi(struct qed_dev * cdev,struct qed_mcp_iscsi_stats * stats,bool is_atomic)1368 void qed_get_protocol_stats_iscsi(struct qed_dev *cdev,
1369 struct qed_mcp_iscsi_stats *stats,
1370 bool is_atomic)
1371 {
1372 struct qed_iscsi_stats proto_stats;
1373
1374 /* Retrieve FW statistics */
1375 memset(&proto_stats, 0, sizeof(proto_stats));
1376 if (qed_iscsi_stats_context(cdev, &proto_stats, is_atomic)) {
1377 DP_VERBOSE(cdev, QED_MSG_STORAGE,
1378 "Failed to collect ISCSI statistics\n");
1379 return;
1380 }
1381
1382 /* Translate FW statistics into struct */
1383 stats->rx_pdus = proto_stats.iscsi_rx_total_pdu_cnt;
1384 stats->tx_pdus = proto_stats.iscsi_tx_total_pdu_cnt;
1385 stats->rx_bytes = proto_stats.iscsi_rx_bytes_cnt;
1386 stats->tx_bytes = proto_stats.iscsi_tx_bytes_cnt;
1387 }
1388
1389 static const struct qed_iscsi_ops qed_iscsi_ops_pass = {
1390 .common = &qed_common_ops_pass,
1391 .ll2 = &qed_ll2_ops_pass,
1392 .fill_dev_info = &qed_fill_iscsi_dev_info,
1393 .register_ops = &qed_register_iscsi_ops,
1394 .start = &qed_iscsi_start,
1395 .stop = &qed_iscsi_stop,
1396 .acquire_conn = &qed_iscsi_acquire_conn,
1397 .release_conn = &qed_iscsi_release_conn,
1398 .offload_conn = &qed_iscsi_offload_conn,
1399 .update_conn = &qed_iscsi_update_conn,
1400 .destroy_conn = &qed_iscsi_destroy_conn,
1401 .clear_sq = &qed_iscsi_clear_conn_sq,
1402 .get_stats = &qed_iscsi_stats,
1403 .change_mac = &qed_iscsi_change_mac,
1404 };
1405
qed_get_iscsi_ops(void)1406 const struct qed_iscsi_ops *qed_get_iscsi_ops(void)
1407 {
1408 return &qed_iscsi_ops_pass;
1409 }
1410 EXPORT_SYMBOL(qed_get_iscsi_ops);
1411
qed_put_iscsi_ops(void)1412 void qed_put_iscsi_ops(void)
1413 {
1414 }
1415 EXPORT_SYMBOL(qed_put_iscsi_ops);
1416