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9#include <linux/types.h>
10#include <asm/byteorder.h>
11#include <asm/param.h>
12#include <linux/delay.h>
13#include <linux/dma-mapping.h>
14#include <linux/etherdevice.h>
15#include <linux/interrupt.h>
16#include <linux/kernel.h>
17#include <linux/log2.h>
18#include <linux/module.h>
19#include <linux/pci.h>
20#include <linux/slab.h>
21#include <linux/stddef.h>
22#include <linux/string.h>
23#include <linux/version.h>
24#include <linux/workqueue.h>
25#include <linux/errno.h>
26#include <linux/list.h>
27#include <linux/spinlock.h>
28#include <linux/qed/qed_iscsi_if.h>
29#include "qed.h"
30#include "qed_cxt.h"
31#include "qed_dev_api.h"
32#include "qed_hsi.h"
33#include "qed_hw.h"
34#include "qed_int.h"
35#include "qed_iscsi.h"
36#include "qed_ll2.h"
37#include "qed_mcp.h"
38#include "qed_sp.h"
39#include "qed_sriov.h"
40#include "qed_reg_addr.h"
41
42struct qed_iscsi_conn {
43 struct list_head list_entry;
44 bool free_on_delete;
45
46 u16 conn_id;
47 u32 icid;
48 u32 fw_cid;
49
50 u8 layer_code;
51 u8 offl_flags;
52 u8 connect_mode;
53 u32 initial_ack;
54 dma_addr_t sq_pbl_addr;
55 struct qed_chain r2tq;
56 struct qed_chain xhq;
57 struct qed_chain uhq;
58
59 struct tcp_upload_params *tcp_upload_params_virt_addr;
60 dma_addr_t tcp_upload_params_phys_addr;
61 struct scsi_terminate_extra_params *queue_cnts_virt_addr;
62 dma_addr_t queue_cnts_phys_addr;
63 dma_addr_t syn_phy_addr;
64
65 u16 syn_ip_payload_length;
66 u8 local_mac[6];
67 u8 remote_mac[6];
68 u16 vlan_id;
69 u8 tcp_flags;
70 u8 ip_version;
71 u32 remote_ip[4];
72 u32 local_ip[4];
73 u8 ka_max_probe_cnt;
74 u8 dup_ack_theshold;
75 u32 rcv_next;
76 u32 snd_una;
77 u32 snd_next;
78 u32 snd_max;
79 u32 snd_wnd;
80 u32 rcv_wnd;
81 u32 snd_wl1;
82 u32 cwnd;
83 u32 ss_thresh;
84 u16 srtt;
85 u16 rtt_var;
86 u32 ts_time;
87 u32 ts_recent;
88 u32 ts_recent_age;
89 u32 total_rt;
90 u32 ka_timeout_delta;
91 u32 rt_timeout_delta;
92 u8 dup_ack_cnt;
93 u8 snd_wnd_probe_cnt;
94 u8 ka_probe_cnt;
95 u8 rt_cnt;
96 u32 flow_label;
97 u32 ka_timeout;
98 u32 ka_interval;
99 u32 max_rt_time;
100 u32 initial_rcv_wnd;
101 u8 ttl;
102 u8 tos_or_tc;
103 u16 remote_port;
104 u16 local_port;
105 u16 mss;
106 u8 snd_wnd_scale;
107 u8 rcv_wnd_scale;
108 u32 ts_ticks_per_second;
109 u16 da_timeout_value;
110 u8 ack_frequency;
111
112 u8 update_flag;
113 u8 default_cq;
114 u32 max_seq_size;
115 u32 max_recv_pdu_length;
116 u32 max_send_pdu_length;
117 u32 first_seq_length;
118 u32 exp_stat_sn;
119 u32 stat_sn;
120 u16 physical_q0;
121 u16 physical_q1;
122 u8 abortive_dsconnect;
123};
124
125static int
126qed_sp_iscsi_func_start(struct qed_hwfn *p_hwfn,
127 enum spq_mode comp_mode,
128 struct qed_spq_comp_cb *p_comp_addr,
129 void *event_context, iscsi_event_cb_t async_event_cb)
130{
131 struct iscsi_init_ramrod_params *p_ramrod = NULL;
132 struct scsi_init_func_queues *p_queue = NULL;
133 struct qed_iscsi_pf_params *p_params = NULL;
134 struct iscsi_spe_func_init *p_init = NULL;
135 struct qed_spq_entry *p_ent = NULL;
136 struct qed_sp_init_data init_data;
137 int rc = 0;
138 u32 dval;
139 u16 val;
140 u8 i;
141
142
143 memset(&init_data, 0, sizeof(init_data));
144 init_data.cid = qed_spq_get_cid(p_hwfn);
145 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
146 init_data.comp_mode = comp_mode;
147 init_data.p_comp_data = p_comp_addr;
148
149 rc = qed_sp_init_request(p_hwfn, &p_ent,
150 ISCSI_RAMROD_CMD_ID_INIT_FUNC,
151 PROTOCOLID_ISCSI, &init_data);
152 if (rc)
153 return rc;
154
155 p_ramrod = &p_ent->ramrod.iscsi_init;
156 p_init = &p_ramrod->iscsi_init_spe;
157 p_params = &p_hwfn->pf_params.iscsi_pf_params;
158 p_queue = &p_init->q_params;
159
160 SET_FIELD(p_init->hdr.flags,
161 ISCSI_SLOW_PATH_HDR_LAYER_CODE, ISCSI_SLOW_PATH_LAYER_CODE);
162 p_init->hdr.op_code = ISCSI_RAMROD_CMD_ID_INIT_FUNC;
163
164 val = p_params->half_way_close_timeout;
165 p_init->half_way_close_timeout = cpu_to_le16(val);
166 p_init->num_sq_pages_in_ring = p_params->num_sq_pages_in_ring;
167 p_init->num_r2tq_pages_in_ring = p_params->num_r2tq_pages_in_ring;
168 p_init->num_uhq_pages_in_ring = p_params->num_uhq_pages_in_ring;
169 p_init->func_params.log_page_size = p_params->log_page_size;
170 val = p_params->num_tasks;
171 p_init->func_params.num_tasks = cpu_to_le16(val);
172 p_init->debug_mode.flags = p_params->debug_mode;
173
174 DMA_REGPAIR_LE(p_queue->glbl_q_params_addr,
175 p_params->glbl_q_params_addr);
176
177 val = p_params->cq_num_entries;
178 p_queue->cq_num_entries = cpu_to_le16(val);
179 val = p_params->cmdq_num_entries;
180 p_queue->cmdq_num_entries = cpu_to_le16(val);
181 p_queue->num_queues = p_params->num_queues;
182 dval = (u8)p_hwfn->hw_info.resc_start[QED_CMDQS_CQS];
183 p_queue->queue_relative_offset = (u8)dval;
184 p_queue->cq_sb_pi = p_params->gl_rq_pi;
185 p_queue->cmdq_sb_pi = p_params->gl_cmd_pi;
186
187 for (i = 0; i < p_params->num_queues; i++) {
188 val = p_hwfn->sbs_info[i]->igu_sb_id;
189 p_queue->cq_cmdq_sb_num_arr[i] = cpu_to_le16(val);
190 }
191
192 p_queue->bdq_resource_id = ISCSI_BDQ_ID(p_hwfn->port_id);
193
194 DMA_REGPAIR_LE(p_queue->bdq_pbl_base_address[BDQ_ID_RQ],
195 p_params->bdq_pbl_base_addr[BDQ_ID_RQ]);
196 p_queue->bdq_pbl_num_entries[BDQ_ID_RQ] =
197 p_params->bdq_pbl_num_entries[BDQ_ID_RQ];
198 val = p_params->bdq_xoff_threshold[BDQ_ID_RQ];
199 p_queue->bdq_xoff_threshold[BDQ_ID_RQ] = cpu_to_le16(val);
200 val = p_params->bdq_xon_threshold[BDQ_ID_RQ];
201 p_queue->bdq_xon_threshold[BDQ_ID_RQ] = cpu_to_le16(val);
202
203 DMA_REGPAIR_LE(p_queue->bdq_pbl_base_address[BDQ_ID_IMM_DATA],
204 p_params->bdq_pbl_base_addr[BDQ_ID_IMM_DATA]);
205 p_queue->bdq_pbl_num_entries[BDQ_ID_IMM_DATA] =
206 p_params->bdq_pbl_num_entries[BDQ_ID_IMM_DATA];
207 val = p_params->bdq_xoff_threshold[BDQ_ID_IMM_DATA];
208 p_queue->bdq_xoff_threshold[BDQ_ID_IMM_DATA] = cpu_to_le16(val);
209 val = p_params->bdq_xon_threshold[BDQ_ID_IMM_DATA];
210 p_queue->bdq_xon_threshold[BDQ_ID_IMM_DATA] = cpu_to_le16(val);
211 val = p_params->rq_buffer_size;
212 p_queue->rq_buffer_size = cpu_to_le16(val);
213 if (p_params->is_target) {
214 SET_FIELD(p_queue->q_validity,
215 SCSI_INIT_FUNC_QUEUES_RQ_VALID, 1);
216 if (p_queue->bdq_pbl_num_entries[BDQ_ID_IMM_DATA])
217 SET_FIELD(p_queue->q_validity,
218 SCSI_INIT_FUNC_QUEUES_IMM_DATA_VALID, 1);
219 SET_FIELD(p_queue->q_validity,
220 SCSI_INIT_FUNC_QUEUES_CMD_VALID, 1);
221 } else {
222 SET_FIELD(p_queue->q_validity,
223 SCSI_INIT_FUNC_QUEUES_RQ_VALID, 1);
224 }
225 p_ramrod->tcp_init.two_msl_timer = cpu_to_le32(p_params->two_msl_timer);
226 val = p_params->tx_sws_timer;
227 p_ramrod->tcp_init.tx_sws_timer = cpu_to_le16(val);
228 p_ramrod->tcp_init.maxfinrt = p_params->max_fin_rt;
229
230 p_hwfn->p_iscsi_info->event_context = event_context;
231 p_hwfn->p_iscsi_info->event_cb = async_event_cb;
232
233 return qed_spq_post(p_hwfn, p_ent, NULL);
234}
235
236static int qed_sp_iscsi_conn_offload(struct qed_hwfn *p_hwfn,
237 struct qed_iscsi_conn *p_conn,
238 enum spq_mode comp_mode,
239 struct qed_spq_comp_cb *p_comp_addr)
240{
241 struct iscsi_spe_conn_offload *p_ramrod = NULL;
242 struct tcp_offload_params_opt2 *p_tcp2 = NULL;
243 struct tcp_offload_params *p_tcp = NULL;
244 struct qed_spq_entry *p_ent = NULL;
245 struct qed_sp_init_data init_data;
246 union qed_qm_pq_params pq_params;
247 u16 pq0_id = 0, pq1_id = 0;
248 dma_addr_t r2tq_pbl_addr;
249 dma_addr_t xhq_pbl_addr;
250 dma_addr_t uhq_pbl_addr;
251 int rc = 0;
252 u32 dval;
253 u16 wval;
254 u8 i;
255 u16 *p;
256
257
258 memset(&init_data, 0, sizeof(init_data));
259 init_data.cid = p_conn->icid;
260 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
261 init_data.comp_mode = comp_mode;
262 init_data.p_comp_data = p_comp_addr;
263
264 rc = qed_sp_init_request(p_hwfn, &p_ent,
265 ISCSI_RAMROD_CMD_ID_OFFLOAD_CONN,
266 PROTOCOLID_ISCSI, &init_data);
267 if (rc)
268 return rc;
269
270 p_ramrod = &p_ent->ramrod.iscsi_conn_offload;
271
272
273 memset(&pq_params, 0, sizeof(pq_params));
274 pq0_id = qed_get_qm_pq(p_hwfn, PROTOCOLID_ISCSI, &pq_params);
275 p_conn->physical_q0 = cpu_to_le16(pq0_id);
276 p_ramrod->iscsi.physical_q0 = cpu_to_le16(pq0_id);
277
278
279 pq_params.iscsi.q_idx = 1;
280 pq1_id = qed_get_qm_pq(p_hwfn, PROTOCOLID_ISCSI, &pq_params);
281 p_conn->physical_q1 = cpu_to_le16(pq1_id);
282 p_ramrod->iscsi.physical_q1 = cpu_to_le16(pq1_id);
283
284 p_ramrod->hdr.op_code = ISCSI_RAMROD_CMD_ID_OFFLOAD_CONN;
285 SET_FIELD(p_ramrod->hdr.flags, ISCSI_SLOW_PATH_HDR_LAYER_CODE,
286 p_conn->layer_code);
287
288 p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id);
289 p_ramrod->fw_cid = cpu_to_le32(p_conn->icid);
290
291 DMA_REGPAIR_LE(p_ramrod->iscsi.sq_pbl_addr, p_conn->sq_pbl_addr);
292
293 r2tq_pbl_addr = qed_chain_get_pbl_phys(&p_conn->r2tq);
294 DMA_REGPAIR_LE(p_ramrod->iscsi.r2tq_pbl_addr, r2tq_pbl_addr);
295
296 xhq_pbl_addr = qed_chain_get_pbl_phys(&p_conn->xhq);
297 DMA_REGPAIR_LE(p_ramrod->iscsi.xhq_pbl_addr, xhq_pbl_addr);
298
299 uhq_pbl_addr = qed_chain_get_pbl_phys(&p_conn->uhq);
300 DMA_REGPAIR_LE(p_ramrod->iscsi.uhq_pbl_addr, uhq_pbl_addr);
301
302 p_ramrod->iscsi.initial_ack = cpu_to_le32(p_conn->initial_ack);
303 p_ramrod->iscsi.flags = p_conn->offl_flags;
304 p_ramrod->iscsi.default_cq = p_conn->default_cq;
305 p_ramrod->iscsi.stat_sn = cpu_to_le32(p_conn->stat_sn);
306
307 if (!GET_FIELD(p_ramrod->iscsi.flags,
308 ISCSI_CONN_OFFLOAD_PARAMS_TCP_ON_CHIP_1B)) {
309 p_tcp = &p_ramrod->tcp;
310
311 p = (u16 *)p_conn->local_mac;
312 p_tcp->local_mac_addr_hi = swab16(get_unaligned(p));
313 p_tcp->local_mac_addr_mid = swab16(get_unaligned(p + 1));
314 p_tcp->local_mac_addr_lo = swab16(get_unaligned(p + 2));
315
316 p = (u16 *)p_conn->remote_mac;
317 p_tcp->remote_mac_addr_hi = swab16(get_unaligned(p));
318 p_tcp->remote_mac_addr_mid = swab16(get_unaligned(p + 1));
319 p_tcp->remote_mac_addr_lo = swab16(get_unaligned(p + 2));
320
321 p_tcp->vlan_id = cpu_to_le16(p_conn->vlan_id);
322
323 p_tcp->flags = p_conn->tcp_flags;
324 p_tcp->ip_version = p_conn->ip_version;
325 for (i = 0; i < 4; i++) {
326 dval = p_conn->remote_ip[i];
327 p_tcp->remote_ip[i] = cpu_to_le32(dval);
328 dval = p_conn->local_ip[i];
329 p_tcp->local_ip[i] = cpu_to_le32(dval);
330 }
331 p_tcp->ka_max_probe_cnt = p_conn->ka_max_probe_cnt;
332 p_tcp->dup_ack_theshold = p_conn->dup_ack_theshold;
333
334 p_tcp->rcv_next = cpu_to_le32(p_conn->rcv_next);
335 p_tcp->snd_una = cpu_to_le32(p_conn->snd_una);
336 p_tcp->snd_next = cpu_to_le32(p_conn->snd_next);
337 p_tcp->snd_max = cpu_to_le32(p_conn->snd_max);
338 p_tcp->snd_wnd = cpu_to_le32(p_conn->snd_wnd);
339 p_tcp->rcv_wnd = cpu_to_le32(p_conn->rcv_wnd);
340 p_tcp->snd_wl1 = cpu_to_le32(p_conn->snd_wl1);
341 p_tcp->cwnd = cpu_to_le32(p_conn->cwnd);
342 p_tcp->ss_thresh = cpu_to_le32(p_conn->ss_thresh);
343 p_tcp->srtt = cpu_to_le16(p_conn->srtt);
344 p_tcp->rtt_var = cpu_to_le16(p_conn->rtt_var);
345 p_tcp->ts_time = cpu_to_le32(p_conn->ts_time);
346 p_tcp->ts_recent = cpu_to_le32(p_conn->ts_recent);
347 p_tcp->ts_recent_age = cpu_to_le32(p_conn->ts_recent_age);
348 p_tcp->total_rt = cpu_to_le32(p_conn->total_rt);
349 dval = p_conn->ka_timeout_delta;
350 p_tcp->ka_timeout_delta = cpu_to_le32(dval);
351 dval = p_conn->rt_timeout_delta;
352 p_tcp->rt_timeout_delta = cpu_to_le32(dval);
353 p_tcp->dup_ack_cnt = p_conn->dup_ack_cnt;
354 p_tcp->snd_wnd_probe_cnt = p_conn->snd_wnd_probe_cnt;
355 p_tcp->ka_probe_cnt = p_conn->ka_probe_cnt;
356 p_tcp->rt_cnt = p_conn->rt_cnt;
357 p_tcp->flow_label = cpu_to_le32(p_conn->flow_label);
358 p_tcp->ka_timeout = cpu_to_le32(p_conn->ka_timeout);
359 p_tcp->ka_interval = cpu_to_le32(p_conn->ka_interval);
360 p_tcp->max_rt_time = cpu_to_le32(p_conn->max_rt_time);
361 dval = p_conn->initial_rcv_wnd;
362 p_tcp->initial_rcv_wnd = cpu_to_le32(dval);
363 p_tcp->ttl = p_conn->ttl;
364 p_tcp->tos_or_tc = p_conn->tos_or_tc;
365 p_tcp->remote_port = cpu_to_le16(p_conn->remote_port);
366 p_tcp->local_port = cpu_to_le16(p_conn->local_port);
367 p_tcp->mss = cpu_to_le16(p_conn->mss);
368 p_tcp->snd_wnd_scale = p_conn->snd_wnd_scale;
369 p_tcp->rcv_wnd_scale = p_conn->rcv_wnd_scale;
370 dval = p_conn->ts_ticks_per_second;
371 p_tcp->ts_ticks_per_second = cpu_to_le32(dval);
372 wval = p_conn->da_timeout_value;
373 p_tcp->da_timeout_value = cpu_to_le16(wval);
374 p_tcp->ack_frequency = p_conn->ack_frequency;
375 p_tcp->connect_mode = p_conn->connect_mode;
376 } else {
377 p_tcp2 =
378 &((struct iscsi_spe_conn_offload_option2 *)p_ramrod)->tcp;
379
380 p = (u16 *)p_conn->local_mac;
381 p_tcp2->local_mac_addr_hi = swab16(get_unaligned(p));
382 p_tcp2->local_mac_addr_mid = swab16(get_unaligned(p + 1));
383 p_tcp2->local_mac_addr_lo = swab16(get_unaligned(p + 2));
384
385 p = (u16 *)p_conn->remote_mac;
386 p_tcp2->remote_mac_addr_hi = swab16(get_unaligned(p));
387 p_tcp2->remote_mac_addr_mid = swab16(get_unaligned(p + 1));
388 p_tcp2->remote_mac_addr_lo = swab16(get_unaligned(p + 2));
389
390 p_tcp2->vlan_id = cpu_to_le16(p_conn->vlan_id);
391 p_tcp2->flags = p_conn->tcp_flags;
392
393 p_tcp2->ip_version = p_conn->ip_version;
394 for (i = 0; i < 4; i++) {
395 dval = p_conn->remote_ip[i];
396 p_tcp2->remote_ip[i] = cpu_to_le32(dval);
397 dval = p_conn->local_ip[i];
398 p_tcp2->local_ip[i] = cpu_to_le32(dval);
399 }
400
401 p_tcp2->flow_label = cpu_to_le32(p_conn->flow_label);
402 p_tcp2->ttl = p_conn->ttl;
403 p_tcp2->tos_or_tc = p_conn->tos_or_tc;
404 p_tcp2->remote_port = cpu_to_le16(p_conn->remote_port);
405 p_tcp2->local_port = cpu_to_le16(p_conn->local_port);
406 p_tcp2->mss = cpu_to_le16(p_conn->mss);
407 p_tcp2->rcv_wnd_scale = p_conn->rcv_wnd_scale;
408 p_tcp2->connect_mode = p_conn->connect_mode;
409 wval = p_conn->syn_ip_payload_length;
410 p_tcp2->syn_ip_payload_length = cpu_to_le16(wval);
411 p_tcp2->syn_phy_addr_lo = DMA_LO_LE(p_conn->syn_phy_addr);
412 p_tcp2->syn_phy_addr_hi = DMA_HI_LE(p_conn->syn_phy_addr);
413 }
414
415 return qed_spq_post(p_hwfn, p_ent, NULL);
416}
417
418static int qed_sp_iscsi_conn_update(struct qed_hwfn *p_hwfn,
419 struct qed_iscsi_conn *p_conn,
420 enum spq_mode comp_mode,
421 struct qed_spq_comp_cb *p_comp_addr)
422{
423 struct iscsi_conn_update_ramrod_params *p_ramrod = NULL;
424 struct qed_spq_entry *p_ent = NULL;
425 struct qed_sp_init_data init_data;
426 int rc = -EINVAL;
427 u32 dval;
428
429
430 memset(&init_data, 0, sizeof(init_data));
431 init_data.cid = p_conn->icid;
432 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
433 init_data.comp_mode = comp_mode;
434 init_data.p_comp_data = p_comp_addr;
435
436 rc = qed_sp_init_request(p_hwfn, &p_ent,
437 ISCSI_RAMROD_CMD_ID_UPDATE_CONN,
438 PROTOCOLID_ISCSI, &init_data);
439 if (rc)
440 return rc;
441
442 p_ramrod = &p_ent->ramrod.iscsi_conn_update;
443 p_ramrod->hdr.op_code = ISCSI_RAMROD_CMD_ID_UPDATE_CONN;
444 SET_FIELD(p_ramrod->hdr.flags,
445 ISCSI_SLOW_PATH_HDR_LAYER_CODE, p_conn->layer_code);
446
447 p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id);
448 p_ramrod->fw_cid = cpu_to_le32(p_conn->icid);
449 p_ramrod->flags = p_conn->update_flag;
450 p_ramrod->max_seq_size = cpu_to_le32(p_conn->max_seq_size);
451 dval = p_conn->max_recv_pdu_length;
452 p_ramrod->max_recv_pdu_length = cpu_to_le32(dval);
453 dval = p_conn->max_send_pdu_length;
454 p_ramrod->max_send_pdu_length = cpu_to_le32(dval);
455 dval = p_conn->first_seq_length;
456 p_ramrod->first_seq_length = cpu_to_le32(dval);
457 p_ramrod->exp_stat_sn = cpu_to_le32(p_conn->exp_stat_sn);
458
459 return qed_spq_post(p_hwfn, p_ent, NULL);
460}
461
462static int qed_sp_iscsi_conn_terminate(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_spe_conn_termination *p_ramrod = NULL;
468 struct qed_spq_entry *p_ent = NULL;
469 struct qed_sp_init_data init_data;
470 int rc = -EINVAL;
471
472
473 memset(&init_data, 0, sizeof(init_data));
474 init_data.cid = p_conn->icid;
475 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
476 init_data.comp_mode = comp_mode;
477 init_data.p_comp_data = p_comp_addr;
478
479 rc = qed_sp_init_request(p_hwfn, &p_ent,
480 ISCSI_RAMROD_CMD_ID_TERMINATION_CONN,
481 PROTOCOLID_ISCSI, &init_data);
482 if (rc)
483 return rc;
484
485 p_ramrod = &p_ent->ramrod.iscsi_conn_terminate;
486 p_ramrod->hdr.op_code = ISCSI_RAMROD_CMD_ID_TERMINATION_CONN;
487 SET_FIELD(p_ramrod->hdr.flags,
488 ISCSI_SLOW_PATH_HDR_LAYER_CODE, p_conn->layer_code);
489
490 p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id);
491 p_ramrod->fw_cid = cpu_to_le32(p_conn->icid);
492 p_ramrod->abortive = p_conn->abortive_dsconnect;
493
494 DMA_REGPAIR_LE(p_ramrod->query_params_addr,
495 p_conn->tcp_upload_params_phys_addr);
496 DMA_REGPAIR_LE(p_ramrod->queue_cnts_addr, p_conn->queue_cnts_phys_addr);
497
498 return qed_spq_post(p_hwfn, p_ent, NULL);
499}
500
501static int qed_sp_iscsi_conn_clear_sq(struct qed_hwfn *p_hwfn,
502 struct qed_iscsi_conn *p_conn,
503 enum spq_mode comp_mode,
504 struct qed_spq_comp_cb *p_comp_addr)
505{
506 struct iscsi_slow_path_hdr *p_ramrod = NULL;
507 struct qed_spq_entry *p_ent = NULL;
508 struct qed_sp_init_data init_data;
509 int rc = -EINVAL;
510
511
512 memset(&init_data, 0, sizeof(init_data));
513 init_data.cid = p_conn->icid;
514 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
515 init_data.comp_mode = comp_mode;
516 init_data.p_comp_data = p_comp_addr;
517
518 rc = qed_sp_init_request(p_hwfn, &p_ent,
519 ISCSI_RAMROD_CMD_ID_CLEAR_SQ,
520 PROTOCOLID_ISCSI, &init_data);
521 if (rc)
522 return rc;
523
524 p_ramrod = &p_ent->ramrod.iscsi_empty;
525 p_ramrod->op_code = ISCSI_RAMROD_CMD_ID_CLEAR_SQ;
526 SET_FIELD(p_ramrod->flags,
527 ISCSI_SLOW_PATH_HDR_LAYER_CODE, p_conn->layer_code);
528
529 return qed_spq_post(p_hwfn, p_ent, NULL);
530}
531
532static int qed_sp_iscsi_func_stop(struct qed_hwfn *p_hwfn,
533 enum spq_mode comp_mode,
534 struct qed_spq_comp_cb *p_comp_addr)
535{
536 struct iscsi_spe_func_dstry *p_ramrod = NULL;
537 struct qed_spq_entry *p_ent = NULL;
538 struct qed_sp_init_data init_data;
539 int rc = 0;
540
541
542 memset(&init_data, 0, sizeof(init_data));
543 init_data.cid = qed_spq_get_cid(p_hwfn);
544 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
545 init_data.comp_mode = comp_mode;
546 init_data.p_comp_data = p_comp_addr;
547
548 rc = qed_sp_init_request(p_hwfn, &p_ent,
549 ISCSI_RAMROD_CMD_ID_DESTROY_FUNC,
550 PROTOCOLID_ISCSI, &init_data);
551 if (rc)
552 return rc;
553
554 p_ramrod = &p_ent->ramrod.iscsi_destroy;
555 p_ramrod->hdr.op_code = ISCSI_RAMROD_CMD_ID_DESTROY_FUNC;
556
557 return qed_spq_post(p_hwfn, p_ent, NULL);
558}
559
560static void __iomem *qed_iscsi_get_db_addr(struct qed_hwfn *p_hwfn, u32 cid)
561{
562 return (u8 __iomem *)p_hwfn->doorbells +
563 qed_db_addr(cid, DQ_DEMS_LEGACY);
564}
565
566static void __iomem *qed_iscsi_get_primary_bdq_prod(struct qed_hwfn *p_hwfn,
567 u8 bdq_id)
568{
569 u8 bdq_function_id = ISCSI_BDQ_ID(p_hwfn->port_id);
570
571 return (u8 __iomem *)p_hwfn->regview + GTT_BAR0_MAP_REG_MSDM_RAM +
572 MSTORM_SCSI_BDQ_EXT_PROD_OFFSET(bdq_function_id,
573 bdq_id);
574}
575
576static void __iomem *qed_iscsi_get_secondary_bdq_prod(struct qed_hwfn *p_hwfn,
577 u8 bdq_id)
578{
579 u8 bdq_function_id = ISCSI_BDQ_ID(p_hwfn->port_id);
580
581 return (u8 __iomem *)p_hwfn->regview + GTT_BAR0_MAP_REG_TSDM_RAM +
582 TSTORM_SCSI_BDQ_EXT_PROD_OFFSET(bdq_function_id,
583 bdq_id);
584}
585
586static int qed_iscsi_setup_connection(struct qed_hwfn *p_hwfn,
587 struct qed_iscsi_conn *p_conn)
588{
589 if (!p_conn->queue_cnts_virt_addr)
590 goto nomem;
591 memset(p_conn->queue_cnts_virt_addr, 0,
592 sizeof(*p_conn->queue_cnts_virt_addr));
593
594 if (!p_conn->tcp_upload_params_virt_addr)
595 goto nomem;
596 memset(p_conn->tcp_upload_params_virt_addr, 0,
597 sizeof(*p_conn->tcp_upload_params_virt_addr));
598
599 if (!p_conn->r2tq.p_virt_addr)
600 goto nomem;
601 qed_chain_pbl_zero_mem(&p_conn->r2tq);
602
603 if (!p_conn->uhq.p_virt_addr)
604 goto nomem;
605 qed_chain_pbl_zero_mem(&p_conn->uhq);
606
607 if (!p_conn->xhq.p_virt_addr)
608 goto nomem;
609 qed_chain_pbl_zero_mem(&p_conn->xhq);
610
611 return 0;
612nomem:
613 return -ENOMEM;
614}
615
616static int qed_iscsi_allocate_connection(struct qed_hwfn *p_hwfn,
617 struct qed_iscsi_conn **p_out_conn)
618{
619 u16 uhq_num_elements = 0, xhq_num_elements = 0, r2tq_num_elements = 0;
620 struct scsi_terminate_extra_params *p_q_cnts = NULL;
621 struct qed_iscsi_pf_params *p_params = NULL;
622 struct tcp_upload_params *p_tcp = NULL;
623 struct qed_iscsi_conn *p_conn = NULL;
624 int rc = 0;
625
626
627 spin_lock_bh(&p_hwfn->p_iscsi_info->lock);
628 if (!list_empty(&p_hwfn->p_iscsi_info->free_list))
629 p_conn = list_first_entry(&p_hwfn->p_iscsi_info->free_list,
630 struct qed_iscsi_conn, list_entry);
631 if (p_conn) {
632 list_del(&p_conn->list_entry);
633 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock);
634 *p_out_conn = p_conn;
635 return 0;
636 }
637 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock);
638
639
640 p_params = &p_hwfn->pf_params.iscsi_pf_params;
641
642 p_conn = kzalloc(sizeof(*p_conn), GFP_KERNEL);
643 if (!p_conn)
644 return -ENOMEM;
645
646 p_q_cnts = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev,
647 sizeof(*p_q_cnts),
648 &p_conn->queue_cnts_phys_addr,
649 GFP_KERNEL);
650 if (!p_q_cnts)
651 goto nomem_queue_cnts_param;
652 p_conn->queue_cnts_virt_addr = p_q_cnts;
653
654 p_tcp = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev,
655 sizeof(*p_tcp),
656 &p_conn->tcp_upload_params_phys_addr,
657 GFP_KERNEL);
658 if (!p_tcp)
659 goto nomem_upload_param;
660 p_conn->tcp_upload_params_virt_addr = p_tcp;
661
662 r2tq_num_elements = p_params->num_r2tq_pages_in_ring *
663 QED_CHAIN_PAGE_SIZE / 0x80;
664 rc = qed_chain_alloc(p_hwfn->cdev,
665 QED_CHAIN_USE_TO_CONSUME_PRODUCE,
666 QED_CHAIN_MODE_PBL,
667 QED_CHAIN_CNT_TYPE_U16,
668 r2tq_num_elements, 0x80, &p_conn->r2tq);
669 if (rc)
670 goto nomem_r2tq;
671
672 uhq_num_elements = p_params->num_uhq_pages_in_ring *
673 QED_CHAIN_PAGE_SIZE / sizeof(struct iscsi_uhqe);
674 rc = qed_chain_alloc(p_hwfn->cdev,
675 QED_CHAIN_USE_TO_CONSUME_PRODUCE,
676 QED_CHAIN_MODE_PBL,
677 QED_CHAIN_CNT_TYPE_U16,
678 uhq_num_elements,
679 sizeof(struct iscsi_uhqe), &p_conn->uhq);
680 if (rc)
681 goto nomem_uhq;
682
683 xhq_num_elements = uhq_num_elements;
684 rc = qed_chain_alloc(p_hwfn->cdev,
685 QED_CHAIN_USE_TO_CONSUME_PRODUCE,
686 QED_CHAIN_MODE_PBL,
687 QED_CHAIN_CNT_TYPE_U16,
688 xhq_num_elements,
689 sizeof(struct iscsi_xhqe), &p_conn->xhq);
690 if (rc)
691 goto nomem;
692
693 p_conn->free_on_delete = true;
694 *p_out_conn = p_conn;
695 return 0;
696
697nomem:
698 qed_chain_free(p_hwfn->cdev, &p_conn->uhq);
699nomem_uhq:
700 qed_chain_free(p_hwfn->cdev, &p_conn->r2tq);
701nomem_r2tq:
702 dma_free_coherent(&p_hwfn->cdev->pdev->dev,
703 sizeof(struct tcp_upload_params),
704 p_conn->tcp_upload_params_virt_addr,
705 p_conn->tcp_upload_params_phys_addr);
706nomem_upload_param:
707 dma_free_coherent(&p_hwfn->cdev->pdev->dev,
708 sizeof(struct scsi_terminate_extra_params),
709 p_conn->queue_cnts_virt_addr,
710 p_conn->queue_cnts_phys_addr);
711nomem_queue_cnts_param:
712 kfree(p_conn);
713
714 return -ENOMEM;
715}
716
717static int qed_iscsi_acquire_connection(struct qed_hwfn *p_hwfn,
718 struct qed_iscsi_conn *p_in_conn,
719 struct qed_iscsi_conn **p_out_conn)
720{
721 struct qed_iscsi_conn *p_conn = NULL;
722 int rc = 0;
723 u32 icid;
724
725 spin_lock_bh(&p_hwfn->p_iscsi_info->lock);
726 rc = qed_cxt_acquire_cid(p_hwfn, PROTOCOLID_ISCSI, &icid);
727 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock);
728 if (rc)
729 return rc;
730
731
732 if (p_in_conn)
733 p_conn = p_in_conn;
734 else
735 rc = qed_iscsi_allocate_connection(p_hwfn, &p_conn);
736
737 if (!rc)
738 rc = qed_iscsi_setup_connection(p_hwfn, p_conn);
739
740 if (rc) {
741 spin_lock_bh(&p_hwfn->p_iscsi_info->lock);
742 qed_cxt_release_cid(p_hwfn, icid);
743 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock);
744 return rc;
745 }
746
747 p_conn->icid = icid;
748 p_conn->conn_id = (u16)icid;
749 p_conn->fw_cid = (p_hwfn->hw_info.opaque_fid << 16) | icid;
750
751 *p_out_conn = p_conn;
752
753 return rc;
754}
755
756static void qed_iscsi_release_connection(struct qed_hwfn *p_hwfn,
757 struct qed_iscsi_conn *p_conn)
758{
759 spin_lock_bh(&p_hwfn->p_iscsi_info->lock);
760 list_add_tail(&p_conn->list_entry, &p_hwfn->p_iscsi_info->free_list);
761 qed_cxt_release_cid(p_hwfn, p_conn->icid);
762 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock);
763}
764
765struct qed_iscsi_info *qed_iscsi_alloc(struct qed_hwfn *p_hwfn)
766{
767 struct qed_iscsi_info *p_iscsi_info;
768
769 p_iscsi_info = kzalloc(sizeof(*p_iscsi_info), GFP_KERNEL);
770 if (!p_iscsi_info)
771 return NULL;
772
773 INIT_LIST_HEAD(&p_iscsi_info->free_list);
774 return p_iscsi_info;
775}
776
777void qed_iscsi_setup(struct qed_hwfn *p_hwfn,
778 struct qed_iscsi_info *p_iscsi_info)
779{
780 spin_lock_init(&p_iscsi_info->lock);
781}
782
783void qed_iscsi_free(struct qed_hwfn *p_hwfn,
784 struct qed_iscsi_info *p_iscsi_info)
785{
786 kfree(p_iscsi_info);
787}
788
789static void _qed_iscsi_get_tstats(struct qed_hwfn *p_hwfn,
790 struct qed_ptt *p_ptt,
791 struct qed_iscsi_stats *p_stats)
792{
793 struct tstorm_iscsi_stats_drv tstats;
794 u32 tstats_addr;
795
796 memset(&tstats, 0, sizeof(tstats));
797 tstats_addr = BAR0_MAP_REG_TSDM_RAM +
798 TSTORM_ISCSI_RX_STATS_OFFSET(p_hwfn->rel_pf_id);
799 qed_memcpy_from(p_hwfn, p_ptt, &tstats, tstats_addr, sizeof(tstats));
800
801 p_stats->iscsi_rx_bytes_cnt =
802 HILO_64_REGPAIR(tstats.iscsi_rx_bytes_cnt);
803 p_stats->iscsi_rx_packet_cnt =
804 HILO_64_REGPAIR(tstats.iscsi_rx_packet_cnt);
805 p_stats->iscsi_cmdq_threshold_cnt =
806 le32_to_cpu(tstats.iscsi_cmdq_threshold_cnt);
807 p_stats->iscsi_rq_threshold_cnt =
808 le32_to_cpu(tstats.iscsi_rq_threshold_cnt);
809 p_stats->iscsi_immq_threshold_cnt =
810 le32_to_cpu(tstats.iscsi_immq_threshold_cnt);
811}
812
813static void _qed_iscsi_get_mstats(struct qed_hwfn *p_hwfn,
814 struct qed_ptt *p_ptt,
815 struct qed_iscsi_stats *p_stats)
816{
817 struct mstorm_iscsi_stats_drv mstats;
818 u32 mstats_addr;
819
820 memset(&mstats, 0, sizeof(mstats));
821 mstats_addr = BAR0_MAP_REG_MSDM_RAM +
822 MSTORM_ISCSI_RX_STATS_OFFSET(p_hwfn->rel_pf_id);
823 qed_memcpy_from(p_hwfn, p_ptt, &mstats, mstats_addr, sizeof(mstats));
824
825 p_stats->iscsi_rx_dropped_pdus_task_not_valid =
826 HILO_64_REGPAIR(mstats.iscsi_rx_dropped_pdus_task_not_valid);
827}
828
829static void _qed_iscsi_get_ustats(struct qed_hwfn *p_hwfn,
830 struct qed_ptt *p_ptt,
831 struct qed_iscsi_stats *p_stats)
832{
833 struct ustorm_iscsi_stats_drv ustats;
834 u32 ustats_addr;
835
836 memset(&ustats, 0, sizeof(ustats));
837 ustats_addr = BAR0_MAP_REG_USDM_RAM +
838 USTORM_ISCSI_RX_STATS_OFFSET(p_hwfn->rel_pf_id);
839 qed_memcpy_from(p_hwfn, p_ptt, &ustats, ustats_addr, sizeof(ustats));
840
841 p_stats->iscsi_rx_data_pdu_cnt =
842 HILO_64_REGPAIR(ustats.iscsi_rx_data_pdu_cnt);
843 p_stats->iscsi_rx_r2t_pdu_cnt =
844 HILO_64_REGPAIR(ustats.iscsi_rx_r2t_pdu_cnt);
845 p_stats->iscsi_rx_total_pdu_cnt =
846 HILO_64_REGPAIR(ustats.iscsi_rx_total_pdu_cnt);
847}
848
849static void _qed_iscsi_get_xstats(struct qed_hwfn *p_hwfn,
850 struct qed_ptt *p_ptt,
851 struct qed_iscsi_stats *p_stats)
852{
853 struct xstorm_iscsi_stats_drv xstats;
854 u32 xstats_addr;
855
856 memset(&xstats, 0, sizeof(xstats));
857 xstats_addr = BAR0_MAP_REG_XSDM_RAM +
858 XSTORM_ISCSI_TX_STATS_OFFSET(p_hwfn->rel_pf_id);
859 qed_memcpy_from(p_hwfn, p_ptt, &xstats, xstats_addr, sizeof(xstats));
860
861 p_stats->iscsi_tx_go_to_slow_start_event_cnt =
862 HILO_64_REGPAIR(xstats.iscsi_tx_go_to_slow_start_event_cnt);
863 p_stats->iscsi_tx_fast_retransmit_event_cnt =
864 HILO_64_REGPAIR(xstats.iscsi_tx_fast_retransmit_event_cnt);
865}
866
867static void _qed_iscsi_get_ystats(struct qed_hwfn *p_hwfn,
868 struct qed_ptt *p_ptt,
869 struct qed_iscsi_stats *p_stats)
870{
871 struct ystorm_iscsi_stats_drv ystats;
872 u32 ystats_addr;
873
874 memset(&ystats, 0, sizeof(ystats));
875 ystats_addr = BAR0_MAP_REG_YSDM_RAM +
876 YSTORM_ISCSI_TX_STATS_OFFSET(p_hwfn->rel_pf_id);
877 qed_memcpy_from(p_hwfn, p_ptt, &ystats, ystats_addr, sizeof(ystats));
878
879 p_stats->iscsi_tx_data_pdu_cnt =
880 HILO_64_REGPAIR(ystats.iscsi_tx_data_pdu_cnt);
881 p_stats->iscsi_tx_r2t_pdu_cnt =
882 HILO_64_REGPAIR(ystats.iscsi_tx_r2t_pdu_cnt);
883 p_stats->iscsi_tx_total_pdu_cnt =
884 HILO_64_REGPAIR(ystats.iscsi_tx_total_pdu_cnt);
885}
886
887static void _qed_iscsi_get_pstats(struct qed_hwfn *p_hwfn,
888 struct qed_ptt *p_ptt,
889 struct qed_iscsi_stats *p_stats)
890{
891 struct pstorm_iscsi_stats_drv pstats;
892 u32 pstats_addr;
893
894 memset(&pstats, 0, sizeof(pstats));
895 pstats_addr = BAR0_MAP_REG_PSDM_RAM +
896 PSTORM_ISCSI_TX_STATS_OFFSET(p_hwfn->rel_pf_id);
897 qed_memcpy_from(p_hwfn, p_ptt, &pstats, pstats_addr, sizeof(pstats));
898
899 p_stats->iscsi_tx_bytes_cnt =
900 HILO_64_REGPAIR(pstats.iscsi_tx_bytes_cnt);
901 p_stats->iscsi_tx_packet_cnt =
902 HILO_64_REGPAIR(pstats.iscsi_tx_packet_cnt);
903}
904
905static int qed_iscsi_get_stats(struct qed_hwfn *p_hwfn,
906 struct qed_iscsi_stats *stats)
907{
908 struct qed_ptt *p_ptt;
909
910 memset(stats, 0, sizeof(*stats));
911
912 p_ptt = qed_ptt_acquire(p_hwfn);
913 if (!p_ptt) {
914 DP_ERR(p_hwfn, "Failed to acquire ptt\n");
915 return -EAGAIN;
916 }
917
918 _qed_iscsi_get_tstats(p_hwfn, p_ptt, stats);
919 _qed_iscsi_get_mstats(p_hwfn, p_ptt, stats);
920 _qed_iscsi_get_ustats(p_hwfn, p_ptt, stats);
921
922 _qed_iscsi_get_xstats(p_hwfn, p_ptt, stats);
923 _qed_iscsi_get_ystats(p_hwfn, p_ptt, stats);
924 _qed_iscsi_get_pstats(p_hwfn, p_ptt, stats);
925
926 qed_ptt_release(p_hwfn, p_ptt);
927
928 return 0;
929}
930
931struct qed_hash_iscsi_con {
932 struct hlist_node node;
933 struct qed_iscsi_conn *con;
934};
935
936static int qed_fill_iscsi_dev_info(struct qed_dev *cdev,
937 struct qed_dev_iscsi_info *info)
938{
939 struct qed_hwfn *hwfn = QED_LEADING_HWFN(cdev);
940
941 int rc;
942
943 memset(info, 0, sizeof(*info));
944 rc = qed_fill_dev_info(cdev, &info->common);
945
946 info->primary_dbq_rq_addr =
947 qed_iscsi_get_primary_bdq_prod(hwfn, BDQ_ID_RQ);
948 info->secondary_bdq_rq_addr =
949 qed_iscsi_get_secondary_bdq_prod(hwfn, BDQ_ID_RQ);
950
951 return rc;
952}
953
954static void qed_register_iscsi_ops(struct qed_dev *cdev,
955 struct qed_iscsi_cb_ops *ops, void *cookie)
956{
957 cdev->protocol_ops.iscsi = ops;
958 cdev->ops_cookie = cookie;
959}
960
961static struct qed_hash_iscsi_con *qed_iscsi_get_hash(struct qed_dev *cdev,
962 u32 handle)
963{
964 struct qed_hash_iscsi_con *hash_con = NULL;
965
966 if (!(cdev->flags & QED_FLAG_STORAGE_STARTED))
967 return NULL;
968
969 hash_for_each_possible(cdev->connections, hash_con, node, handle) {
970 if (hash_con->con->icid == handle)
971 break;
972 }
973
974 if (!hash_con || (hash_con->con->icid != handle))
975 return NULL;
976
977 return hash_con;
978}
979
980static int qed_iscsi_stop(struct qed_dev *cdev)
981{
982 int rc;
983
984 if (!(cdev->flags & QED_FLAG_STORAGE_STARTED)) {
985 DP_NOTICE(cdev, "iscsi already stopped\n");
986 return 0;
987 }
988
989 if (!hash_empty(cdev->connections)) {
990 DP_NOTICE(cdev,
991 "Can't stop iscsi - not all connections were returned\n");
992 return -EINVAL;
993 }
994
995
996 rc = qed_sp_iscsi_func_stop(QED_LEADING_HWFN(cdev),
997 QED_SPQ_MODE_EBLOCK, NULL);
998 cdev->flags &= ~QED_FLAG_STORAGE_STARTED;
999
1000 return rc;
1001}
1002
1003static int qed_iscsi_start(struct qed_dev *cdev,
1004 struct qed_iscsi_tid *tasks,
1005 void *event_context,
1006 iscsi_event_cb_t async_event_cb)
1007{
1008 int rc;
1009 struct qed_tid_mem *tid_info;
1010
1011 if (cdev->flags & QED_FLAG_STORAGE_STARTED) {
1012 DP_NOTICE(cdev, "iscsi already started;\n");
1013 return 0;
1014 }
1015
1016 rc = qed_sp_iscsi_func_start(QED_LEADING_HWFN(cdev),
1017 QED_SPQ_MODE_EBLOCK, NULL, event_context,
1018 async_event_cb);
1019 if (rc) {
1020 DP_NOTICE(cdev, "Failed to start iscsi\n");
1021 return rc;
1022 }
1023
1024 cdev->flags |= QED_FLAG_STORAGE_STARTED;
1025 hash_init(cdev->connections);
1026
1027 if (!tasks)
1028 return 0;
1029
1030 tid_info = kzalloc(sizeof(*tid_info), GFP_KERNEL);
1031
1032 if (!tid_info) {
1033 qed_iscsi_stop(cdev);
1034 return -ENOMEM;
1035 }
1036
1037 rc = qed_cxt_get_tid_mem_info(QED_LEADING_HWFN(cdev),
1038 tid_info);
1039 if (rc) {
1040 DP_NOTICE(cdev, "Failed to gather task information\n");
1041 qed_iscsi_stop(cdev);
1042 kfree(tid_info);
1043 return rc;
1044 }
1045
1046
1047 tasks->size = tid_info->tid_size;
1048 tasks->num_tids_per_block = tid_info->num_tids_per_block;
1049 memcpy(tasks->blocks, tid_info->blocks,
1050 MAX_TID_BLOCKS_ISCSI * sizeof(u8 *));
1051
1052 kfree(tid_info);
1053
1054 return 0;
1055}
1056
1057static int qed_iscsi_acquire_conn(struct qed_dev *cdev,
1058 u32 *handle,
1059 u32 *fw_cid, void __iomem **p_doorbell)
1060{
1061 struct qed_hash_iscsi_con *hash_con;
1062 int rc;
1063
1064
1065 hash_con = kzalloc(sizeof(*hash_con), GFP_ATOMIC);
1066 if (!hash_con)
1067 return -ENOMEM;
1068
1069
1070 rc = qed_iscsi_acquire_connection(QED_LEADING_HWFN(cdev), NULL,
1071 &hash_con->con);
1072 if (rc) {
1073 DP_NOTICE(cdev, "Failed to acquire Connection\n");
1074 kfree(hash_con);
1075 return rc;
1076 }
1077
1078
1079 *handle = hash_con->con->icid;
1080 *fw_cid = hash_con->con->fw_cid;
1081 hash_add(cdev->connections, &hash_con->node, *handle);
1082
1083 if (p_doorbell)
1084 *p_doorbell = qed_iscsi_get_db_addr(QED_LEADING_HWFN(cdev),
1085 *handle);
1086
1087 return 0;
1088}
1089
1090static int qed_iscsi_release_conn(struct qed_dev *cdev, u32 handle)
1091{
1092 struct qed_hash_iscsi_con *hash_con;
1093
1094 hash_con = qed_iscsi_get_hash(cdev, handle);
1095 if (!hash_con) {
1096 DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
1097 handle);
1098 return -EINVAL;
1099 }
1100
1101 hlist_del(&hash_con->node);
1102 qed_iscsi_release_connection(QED_LEADING_HWFN(cdev), hash_con->con);
1103 kfree(hash_con);
1104
1105 return 0;
1106}
1107
1108static int qed_iscsi_offload_conn(struct qed_dev *cdev,
1109 u32 handle,
1110 struct qed_iscsi_params_offload *conn_info)
1111{
1112 struct qed_hash_iscsi_con *hash_con;
1113 struct qed_iscsi_conn *con;
1114
1115 hash_con = qed_iscsi_get_hash(cdev, handle);
1116 if (!hash_con) {
1117 DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
1118 handle);
1119 return -EINVAL;
1120 }
1121
1122
1123 con = hash_con->con;
1124
1125 ether_addr_copy(con->local_mac, conn_info->src.mac);
1126 ether_addr_copy(con->remote_mac, conn_info->dst.mac);
1127 memcpy(con->local_ip, conn_info->src.ip, sizeof(con->local_ip));
1128 memcpy(con->remote_ip, conn_info->dst.ip, sizeof(con->remote_ip));
1129 con->local_port = conn_info->src.port;
1130 con->remote_port = conn_info->dst.port;
1131
1132 con->layer_code = conn_info->layer_code;
1133 con->sq_pbl_addr = conn_info->sq_pbl_addr;
1134 con->initial_ack = conn_info->initial_ack;
1135 con->vlan_id = conn_info->vlan_id;
1136 con->tcp_flags = conn_info->tcp_flags;
1137 con->ip_version = conn_info->ip_version;
1138 con->default_cq = conn_info->default_cq;
1139 con->ka_max_probe_cnt = conn_info->ka_max_probe_cnt;
1140 con->dup_ack_theshold = conn_info->dup_ack_theshold;
1141 con->rcv_next = conn_info->rcv_next;
1142 con->snd_una = conn_info->snd_una;
1143 con->snd_next = conn_info->snd_next;
1144 con->snd_max = conn_info->snd_max;
1145 con->snd_wnd = conn_info->snd_wnd;
1146 con->rcv_wnd = conn_info->rcv_wnd;
1147 con->snd_wl1 = conn_info->snd_wl1;
1148 con->cwnd = conn_info->cwnd;
1149 con->ss_thresh = conn_info->ss_thresh;
1150 con->srtt = conn_info->srtt;
1151 con->rtt_var = conn_info->rtt_var;
1152 con->ts_time = conn_info->ts_time;
1153 con->ts_recent = conn_info->ts_recent;
1154 con->ts_recent_age = conn_info->ts_recent_age;
1155 con->total_rt = conn_info->total_rt;
1156 con->ka_timeout_delta = conn_info->ka_timeout_delta;
1157 con->rt_timeout_delta = conn_info->rt_timeout_delta;
1158 con->dup_ack_cnt = conn_info->dup_ack_cnt;
1159 con->snd_wnd_probe_cnt = conn_info->snd_wnd_probe_cnt;
1160 con->ka_probe_cnt = conn_info->ka_probe_cnt;
1161 con->rt_cnt = conn_info->rt_cnt;
1162 con->flow_label = conn_info->flow_label;
1163 con->ka_timeout = conn_info->ka_timeout;
1164 con->ka_interval = conn_info->ka_interval;
1165 con->max_rt_time = conn_info->max_rt_time;
1166 con->initial_rcv_wnd = conn_info->initial_rcv_wnd;
1167 con->ttl = conn_info->ttl;
1168 con->tos_or_tc = conn_info->tos_or_tc;
1169 con->remote_port = conn_info->remote_port;
1170 con->local_port = conn_info->local_port;
1171 con->mss = conn_info->mss;
1172 con->snd_wnd_scale = conn_info->snd_wnd_scale;
1173 con->rcv_wnd_scale = conn_info->rcv_wnd_scale;
1174 con->ts_ticks_per_second = conn_info->ts_ticks_per_second;
1175 con->da_timeout_value = conn_info->da_timeout_value;
1176 con->ack_frequency = conn_info->ack_frequency;
1177
1178
1179 con->offl_flags = 0x1;
1180
1181 return qed_sp_iscsi_conn_offload(QED_LEADING_HWFN(cdev), con,
1182 QED_SPQ_MODE_EBLOCK, NULL);
1183}
1184
1185static int qed_iscsi_update_conn(struct qed_dev *cdev,
1186 u32 handle,
1187 struct qed_iscsi_params_update *conn_info)
1188{
1189 struct qed_hash_iscsi_con *hash_con;
1190 struct qed_iscsi_conn *con;
1191
1192 hash_con = qed_iscsi_get_hash(cdev, handle);
1193 if (!hash_con) {
1194 DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
1195 handle);
1196 return -EINVAL;
1197 }
1198
1199
1200 con = hash_con->con;
1201 con->update_flag = conn_info->update_flag;
1202 con->max_seq_size = conn_info->max_seq_size;
1203 con->max_recv_pdu_length = conn_info->max_recv_pdu_length;
1204 con->max_send_pdu_length = conn_info->max_send_pdu_length;
1205 con->first_seq_length = conn_info->first_seq_length;
1206 con->exp_stat_sn = conn_info->exp_stat_sn;
1207
1208 return qed_sp_iscsi_conn_update(QED_LEADING_HWFN(cdev), con,
1209 QED_SPQ_MODE_EBLOCK, NULL);
1210}
1211
1212static int qed_iscsi_clear_conn_sq(struct qed_dev *cdev, u32 handle)
1213{
1214 struct qed_hash_iscsi_con *hash_con;
1215
1216 hash_con = qed_iscsi_get_hash(cdev, handle);
1217 if (!hash_con) {
1218 DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
1219 handle);
1220 return -EINVAL;
1221 }
1222
1223 return qed_sp_iscsi_conn_clear_sq(QED_LEADING_HWFN(cdev),
1224 hash_con->con,
1225 QED_SPQ_MODE_EBLOCK, NULL);
1226}
1227
1228static int qed_iscsi_destroy_conn(struct qed_dev *cdev,
1229 u32 handle, u8 abrt_conn)
1230{
1231 struct qed_hash_iscsi_con *hash_con;
1232
1233 hash_con = qed_iscsi_get_hash(cdev, handle);
1234 if (!hash_con) {
1235 DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
1236 handle);
1237 return -EINVAL;
1238 }
1239
1240 hash_con->con->abortive_dsconnect = abrt_conn;
1241
1242 return qed_sp_iscsi_conn_terminate(QED_LEADING_HWFN(cdev),
1243 hash_con->con,
1244 QED_SPQ_MODE_EBLOCK, NULL);
1245}
1246
1247static int qed_iscsi_stats(struct qed_dev *cdev, struct qed_iscsi_stats *stats)
1248{
1249 return qed_iscsi_get_stats(QED_LEADING_HWFN(cdev), stats);
1250}
1251
1252static const struct qed_iscsi_ops qed_iscsi_ops_pass = {
1253 .common = &qed_common_ops_pass,
1254 .ll2 = &qed_ll2_ops_pass,
1255 .fill_dev_info = &qed_fill_iscsi_dev_info,
1256 .register_ops = &qed_register_iscsi_ops,
1257 .start = &qed_iscsi_start,
1258 .stop = &qed_iscsi_stop,
1259 .acquire_conn = &qed_iscsi_acquire_conn,
1260 .release_conn = &qed_iscsi_release_conn,
1261 .offload_conn = &qed_iscsi_offload_conn,
1262 .update_conn = &qed_iscsi_update_conn,
1263 .destroy_conn = &qed_iscsi_destroy_conn,
1264 .clear_sq = &qed_iscsi_clear_conn_sq,
1265 .get_stats = &qed_iscsi_stats,
1266};
1267
1268const struct qed_iscsi_ops *qed_get_iscsi_ops(void)
1269{
1270 return &qed_iscsi_ops_pass;
1271}
1272EXPORT_SYMBOL(qed_get_iscsi_ops);
1273
1274void qed_put_iscsi_ops(void)
1275{
1276}
1277EXPORT_SYMBOL(qed_put_iscsi_ops);
1278
