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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
65struct 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
146static int
147qed_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
162static int
163qed_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
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
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 return -EINVAL;
204 }
205
206 SET_FIELD(p_init->hdr.flags,
207 ISCSI_SLOW_PATH_HDR_LAYER_CODE, ISCSI_SLOW_PATH_LAYER_CODE);
208 p_init->hdr.op_code = ISCSI_RAMROD_CMD_ID_INIT_FUNC;
209
210 val = p_params->half_way_close_timeout;
211 p_init->half_way_close_timeout = cpu_to_le16(val);
212 p_init->num_sq_pages_in_ring = p_params->num_sq_pages_in_ring;
213 p_init->num_r2tq_pages_in_ring = p_params->num_r2tq_pages_in_ring;
214 p_init->num_uhq_pages_in_ring = p_params->num_uhq_pages_in_ring;
215 p_init->ll2_rx_queue_id = p_hwfn->hw_info.resc_start[QED_LL2_QUEUE] +
216 p_params->ll2_ooo_queue_id;
217
218 p_init->func_params.log_page_size = p_params->log_page_size;
219 val = p_params->num_tasks;
220 p_init->func_params.num_tasks = cpu_to_le16(val);
221 p_init->debug_mode.flags = p_params->debug_mode;
222
223 DMA_REGPAIR_LE(p_queue->glbl_q_params_addr,
224 p_params->glbl_q_params_addr);
225
226 val = p_params->cq_num_entries;
227 p_queue->cq_num_entries = cpu_to_le16(val);
228 val = p_params->cmdq_num_entries;
229 p_queue->cmdq_num_entries = cpu_to_le16(val);
230 p_queue->num_queues = p_params->num_queues;
231 dval = (u8)p_hwfn->hw_info.resc_start[QED_CMDQS_CQS];
232 p_queue->queue_relative_offset = (u8)dval;
233 p_queue->cq_sb_pi = p_params->gl_rq_pi;
234 p_queue->cmdq_sb_pi = p_params->gl_cmd_pi;
235
236 for (i = 0; i < p_params->num_queues; i++) {
237 val = qed_get_igu_sb_id(p_hwfn, i);
238 p_queue->cq_cmdq_sb_num_arr[i] = cpu_to_le16(val);
239 }
240
241 p_queue->bdq_resource_id = (u8)RESC_START(p_hwfn, QED_BDQ);
242
243 DMA_REGPAIR_LE(p_queue->bdq_pbl_base_address[BDQ_ID_RQ],
244 p_params->bdq_pbl_base_addr[BDQ_ID_RQ]);
245 p_queue->bdq_pbl_num_entries[BDQ_ID_RQ] =
246 p_params->bdq_pbl_num_entries[BDQ_ID_RQ];
247 val = p_params->bdq_xoff_threshold[BDQ_ID_RQ];
248 p_queue->bdq_xoff_threshold[BDQ_ID_RQ] = cpu_to_le16(val);
249 val = p_params->bdq_xon_threshold[BDQ_ID_RQ];
250 p_queue->bdq_xon_threshold[BDQ_ID_RQ] = cpu_to_le16(val);
251
252 DMA_REGPAIR_LE(p_queue->bdq_pbl_base_address[BDQ_ID_IMM_DATA],
253 p_params->bdq_pbl_base_addr[BDQ_ID_IMM_DATA]);
254 p_queue->bdq_pbl_num_entries[BDQ_ID_IMM_DATA] =
255 p_params->bdq_pbl_num_entries[BDQ_ID_IMM_DATA];
256 val = p_params->bdq_xoff_threshold[BDQ_ID_IMM_DATA];
257 p_queue->bdq_xoff_threshold[BDQ_ID_IMM_DATA] = cpu_to_le16(val);
258 val = p_params->bdq_xon_threshold[BDQ_ID_IMM_DATA];
259 p_queue->bdq_xon_threshold[BDQ_ID_IMM_DATA] = cpu_to_le16(val);
260 val = p_params->rq_buffer_size;
261 p_queue->rq_buffer_size = cpu_to_le16(val);
262 if (p_params->is_target) {
263 SET_FIELD(p_queue->q_validity,
264 SCSI_INIT_FUNC_QUEUES_RQ_VALID, 1);
265 if (p_queue->bdq_pbl_num_entries[BDQ_ID_IMM_DATA])
266 SET_FIELD(p_queue->q_validity,
267 SCSI_INIT_FUNC_QUEUES_IMM_DATA_VALID, 1);
268 SET_FIELD(p_queue->q_validity,
269 SCSI_INIT_FUNC_QUEUES_CMD_VALID, 1);
270 } else {
271 SET_FIELD(p_queue->q_validity,
272 SCSI_INIT_FUNC_QUEUES_RQ_VALID, 1);
273 }
274 p_ramrod->tcp_init.two_msl_timer = cpu_to_le32(p_params->two_msl_timer);
275 val = p_params->tx_sws_timer;
276 p_ramrod->tcp_init.tx_sws_timer = cpu_to_le16(val);
277 p_ramrod->tcp_init.max_fin_rt = p_params->max_fin_rt;
278
279 p_hwfn->p_iscsi_info->event_context = event_context;
280 p_hwfn->p_iscsi_info->event_cb = async_event_cb;
281
282 qed_spq_register_async_cb(p_hwfn, PROTOCOLID_ISCSI,
283 qed_iscsi_async_event);
284
285 return qed_spq_post(p_hwfn, p_ent, NULL);
286}
287
288static int qed_sp_iscsi_conn_offload(struct qed_hwfn *p_hwfn,
289 struct qed_iscsi_conn *p_conn,
290 enum spq_mode comp_mode,
291 struct qed_spq_comp_cb *p_comp_addr)
292{
293 struct iscsi_spe_conn_offload *p_ramrod = NULL;
294 struct tcp_offload_params_opt2 *p_tcp2 = NULL;
295 struct tcp_offload_params *p_tcp = NULL;
296 struct qed_spq_entry *p_ent = NULL;
297 struct qed_sp_init_data init_data;
298 dma_addr_t r2tq_pbl_addr;
299 dma_addr_t xhq_pbl_addr;
300 dma_addr_t uhq_pbl_addr;
301 u16 physical_q;
302 int rc = 0;
303 u32 dval;
304 u16 wval;
305 u16 *p;
306 u8 i;
307
308
309 memset(&init_data, 0, sizeof(init_data));
310 init_data.cid = p_conn->icid;
311 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
312 init_data.comp_mode = comp_mode;
313 init_data.p_comp_data = p_comp_addr;
314
315 rc = qed_sp_init_request(p_hwfn, &p_ent,
316 ISCSI_RAMROD_CMD_ID_OFFLOAD_CONN,
317 PROTOCOLID_ISCSI, &init_data);
318 if (rc)
319 return rc;
320
321 p_ramrod = &p_ent->ramrod.iscsi_conn_offload;
322
323
324 physical_q = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_OFLD);
325 p_conn->physical_q0 = cpu_to_le16(physical_q);
326 p_ramrod->iscsi.physical_q0 = cpu_to_le16(physical_q);
327
328
329 physical_q = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_ACK);
330 p_conn->physical_q1 = cpu_to_le16(physical_q);
331 p_ramrod->iscsi.physical_q1 = cpu_to_le16(physical_q);
332
333 p_ramrod->hdr.op_code = ISCSI_RAMROD_CMD_ID_OFFLOAD_CONN;
334 SET_FIELD(p_ramrod->hdr.flags, ISCSI_SLOW_PATH_HDR_LAYER_CODE,
335 p_conn->layer_code);
336
337 p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id);
338 p_ramrod->fw_cid = cpu_to_le32(p_conn->icid);
339
340 DMA_REGPAIR_LE(p_ramrod->iscsi.sq_pbl_addr, p_conn->sq_pbl_addr);
341
342 r2tq_pbl_addr = qed_chain_get_pbl_phys(&p_conn->r2tq);
343 DMA_REGPAIR_LE(p_ramrod->iscsi.r2tq_pbl_addr, r2tq_pbl_addr);
344
345 xhq_pbl_addr = qed_chain_get_pbl_phys(&p_conn->xhq);
346 DMA_REGPAIR_LE(p_ramrod->iscsi.xhq_pbl_addr, xhq_pbl_addr);
347
348 uhq_pbl_addr = qed_chain_get_pbl_phys(&p_conn->uhq);
349 DMA_REGPAIR_LE(p_ramrod->iscsi.uhq_pbl_addr, uhq_pbl_addr);
350
351 p_ramrod->iscsi.initial_ack = cpu_to_le32(p_conn->initial_ack);
352 p_ramrod->iscsi.flags = p_conn->offl_flags;
353 p_ramrod->iscsi.default_cq = p_conn->default_cq;
354 p_ramrod->iscsi.stat_sn = cpu_to_le32(p_conn->stat_sn);
355
356 if (!GET_FIELD(p_ramrod->iscsi.flags,
357 ISCSI_CONN_OFFLOAD_PARAMS_TCP_ON_CHIP_1B)) {
358 p_tcp = &p_ramrod->tcp;
359
360 p = (u16 *)p_conn->local_mac;
361 p_tcp->local_mac_addr_hi = swab16(get_unaligned(p));
362 p_tcp->local_mac_addr_mid = swab16(get_unaligned(p + 1));
363 p_tcp->local_mac_addr_lo = swab16(get_unaligned(p + 2));
364
365 p = (u16 *)p_conn->remote_mac;
366 p_tcp->remote_mac_addr_hi = swab16(get_unaligned(p));
367 p_tcp->remote_mac_addr_mid = swab16(get_unaligned(p + 1));
368 p_tcp->remote_mac_addr_lo = swab16(get_unaligned(p + 2));
369
370 p_tcp->vlan_id = cpu_to_le16(p_conn->vlan_id);
371
372 p_tcp->flags = cpu_to_le16(p_conn->tcp_flags);
373 p_tcp->ip_version = p_conn->ip_version;
374 for (i = 0; i < 4; i++) {
375 dval = p_conn->remote_ip[i];
376 p_tcp->remote_ip[i] = cpu_to_le32(dval);
377 dval = p_conn->local_ip[i];
378 p_tcp->local_ip[i] = cpu_to_le32(dval);
379 }
380 p_tcp->ka_max_probe_cnt = p_conn->ka_max_probe_cnt;
381 p_tcp->dup_ack_theshold = p_conn->dup_ack_theshold;
382
383 p_tcp->rcv_next = cpu_to_le32(p_conn->rcv_next);
384 p_tcp->snd_una = cpu_to_le32(p_conn->snd_una);
385 p_tcp->snd_next = cpu_to_le32(p_conn->snd_next);
386 p_tcp->snd_max = cpu_to_le32(p_conn->snd_max);
387 p_tcp->snd_wnd = cpu_to_le32(p_conn->snd_wnd);
388 p_tcp->rcv_wnd = cpu_to_le32(p_conn->rcv_wnd);
389 p_tcp->snd_wl1 = cpu_to_le32(p_conn->snd_wl1);
390 p_tcp->cwnd = cpu_to_le32(p_conn->cwnd);
391 p_tcp->ss_thresh = cpu_to_le32(p_conn->ss_thresh);
392 p_tcp->srtt = cpu_to_le16(p_conn->srtt);
393 p_tcp->rtt_var = cpu_to_le16(p_conn->rtt_var);
394 p_tcp->ts_recent = cpu_to_le32(p_conn->ts_recent);
395 p_tcp->ts_recent_age = cpu_to_le32(p_conn->ts_recent_age);
396 p_tcp->total_rt = cpu_to_le32(p_conn->total_rt);
397 dval = p_conn->ka_timeout_delta;
398 p_tcp->ka_timeout_delta = cpu_to_le32(dval);
399 dval = p_conn->rt_timeout_delta;
400 p_tcp->rt_timeout_delta = cpu_to_le32(dval);
401 p_tcp->dup_ack_cnt = p_conn->dup_ack_cnt;
402 p_tcp->snd_wnd_probe_cnt = p_conn->snd_wnd_probe_cnt;
403 p_tcp->ka_probe_cnt = p_conn->ka_probe_cnt;
404 p_tcp->rt_cnt = p_conn->rt_cnt;
405 p_tcp->flow_label = cpu_to_le32(p_conn->flow_label);
406 p_tcp->ka_timeout = cpu_to_le32(p_conn->ka_timeout);
407 p_tcp->ka_interval = cpu_to_le32(p_conn->ka_interval);
408 p_tcp->max_rt_time = cpu_to_le32(p_conn->max_rt_time);
409 dval = p_conn->initial_rcv_wnd;
410 p_tcp->initial_rcv_wnd = cpu_to_le32(dval);
411 p_tcp->ttl = p_conn->ttl;
412 p_tcp->tos_or_tc = p_conn->tos_or_tc;
413 p_tcp->remote_port = cpu_to_le16(p_conn->remote_port);
414 p_tcp->local_port = cpu_to_le16(p_conn->local_port);
415 p_tcp->mss = cpu_to_le16(p_conn->mss);
416 p_tcp->snd_wnd_scale = p_conn->snd_wnd_scale;
417 p_tcp->rcv_wnd_scale = p_conn->rcv_wnd_scale;
418 wval = p_conn->da_timeout_value;
419 p_tcp->da_timeout_value = cpu_to_le16(wval);
420 p_tcp->ack_frequency = p_conn->ack_frequency;
421 p_tcp->connect_mode = p_conn->connect_mode;
422 } else {
423 p_tcp2 =
424 &((struct iscsi_spe_conn_offload_option2 *)p_ramrod)->tcp;
425
426 p = (u16 *)p_conn->local_mac;
427 p_tcp2->local_mac_addr_hi = swab16(get_unaligned(p));
428 p_tcp2->local_mac_addr_mid = swab16(get_unaligned(p + 1));
429 p_tcp2->local_mac_addr_lo = swab16(get_unaligned(p + 2));
430
431 p = (u16 *)p_conn->remote_mac;
432 p_tcp2->remote_mac_addr_hi = swab16(get_unaligned(p));
433 p_tcp2->remote_mac_addr_mid = swab16(get_unaligned(p + 1));
434 p_tcp2->remote_mac_addr_lo = swab16(get_unaligned(p + 2));
435
436 p_tcp2->vlan_id = cpu_to_le16(p_conn->vlan_id);
437 p_tcp2->flags = cpu_to_le16(p_conn->tcp_flags);
438
439 p_tcp2->ip_version = p_conn->ip_version;
440 for (i = 0; i < 4; i++) {
441 dval = p_conn->remote_ip[i];
442 p_tcp2->remote_ip[i] = cpu_to_le32(dval);
443 dval = p_conn->local_ip[i];
444 p_tcp2->local_ip[i] = cpu_to_le32(dval);
445 }
446
447 p_tcp2->flow_label = cpu_to_le32(p_conn->flow_label);
448 p_tcp2->ttl = p_conn->ttl;
449 p_tcp2->tos_or_tc = p_conn->tos_or_tc;
450 p_tcp2->remote_port = cpu_to_le16(p_conn->remote_port);
451 p_tcp2->local_port = cpu_to_le16(p_conn->local_port);
452 p_tcp2->mss = cpu_to_le16(p_conn->mss);
453 p_tcp2->rcv_wnd_scale = p_conn->rcv_wnd_scale;
454 p_tcp2->connect_mode = p_conn->connect_mode;
455 wval = p_conn->syn_ip_payload_length;
456 p_tcp2->syn_ip_payload_length = cpu_to_le16(wval);
457 p_tcp2->syn_phy_addr_lo = DMA_LO_LE(p_conn->syn_phy_addr);
458 p_tcp2->syn_phy_addr_hi = DMA_HI_LE(p_conn->syn_phy_addr);
459 p_tcp2->cwnd = cpu_to_le32(p_conn->cwnd);
460 p_tcp2->ka_max_probe_cnt = p_conn->ka_probe_cnt;
461 p_tcp2->ka_timeout = cpu_to_le32(p_conn->ka_timeout);
462 p_tcp2->max_rt_time = cpu_to_le32(p_conn->max_rt_time);
463 p_tcp2->ka_interval = cpu_to_le32(p_conn->ka_interval);
464 }
465
466 return qed_spq_post(p_hwfn, p_ent, NULL);
467}
468
469static int qed_sp_iscsi_conn_update(struct qed_hwfn *p_hwfn,
470 struct qed_iscsi_conn *p_conn,
471 enum spq_mode comp_mode,
472 struct qed_spq_comp_cb *p_comp_addr)
473{
474 struct iscsi_conn_update_ramrod_params *p_ramrod = NULL;
475 struct qed_spq_entry *p_ent = NULL;
476 struct qed_sp_init_data init_data;
477 int rc = -EINVAL;
478 u32 dval;
479
480
481 memset(&init_data, 0, sizeof(init_data));
482 init_data.cid = p_conn->icid;
483 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
484 init_data.comp_mode = comp_mode;
485 init_data.p_comp_data = p_comp_addr;
486
487 rc = qed_sp_init_request(p_hwfn, &p_ent,
488 ISCSI_RAMROD_CMD_ID_UPDATE_CONN,
489 PROTOCOLID_ISCSI, &init_data);
490 if (rc)
491 return rc;
492
493 p_ramrod = &p_ent->ramrod.iscsi_conn_update;
494 p_ramrod->hdr.op_code = ISCSI_RAMROD_CMD_ID_UPDATE_CONN;
495 SET_FIELD(p_ramrod->hdr.flags,
496 ISCSI_SLOW_PATH_HDR_LAYER_CODE, p_conn->layer_code);
497
498 p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id);
499 p_ramrod->fw_cid = cpu_to_le32(p_conn->icid);
500 p_ramrod->flags = p_conn->update_flag;
501 p_ramrod->max_seq_size = cpu_to_le32(p_conn->max_seq_size);
502 dval = p_conn->max_recv_pdu_length;
503 p_ramrod->max_recv_pdu_length = cpu_to_le32(dval);
504 dval = p_conn->max_send_pdu_length;
505 p_ramrod->max_send_pdu_length = cpu_to_le32(dval);
506 dval = p_conn->first_seq_length;
507 p_ramrod->first_seq_length = cpu_to_le32(dval);
508 p_ramrod->exp_stat_sn = cpu_to_le32(p_conn->exp_stat_sn);
509
510 return qed_spq_post(p_hwfn, p_ent, NULL);
511}
512
513static int
514qed_sp_iscsi_mac_update(struct qed_hwfn *p_hwfn,
515 struct qed_iscsi_conn *p_conn,
516 enum spq_mode comp_mode,
517 struct qed_spq_comp_cb *p_comp_addr)
518{
519 struct iscsi_spe_conn_mac_update *p_ramrod = NULL;
520 struct qed_spq_entry *p_ent = NULL;
521 struct qed_sp_init_data init_data;
522 int rc = -EINVAL;
523 u8 ucval;
524
525
526 memset(&init_data, 0, sizeof(init_data));
527 init_data.cid = p_conn->icid;
528 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
529 init_data.comp_mode = comp_mode;
530 init_data.p_comp_data = p_comp_addr;
531
532 rc = qed_sp_init_request(p_hwfn, &p_ent,
533 ISCSI_RAMROD_CMD_ID_MAC_UPDATE,
534 PROTOCOLID_ISCSI, &init_data);
535 if (rc)
536 return rc;
537
538 p_ramrod = &p_ent->ramrod.iscsi_conn_mac_update;
539 p_ramrod->hdr.op_code = ISCSI_RAMROD_CMD_ID_MAC_UPDATE;
540 SET_FIELD(p_ramrod->hdr.flags,
541 ISCSI_SLOW_PATH_HDR_LAYER_CODE, p_conn->layer_code);
542
543 p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id);
544 p_ramrod->fw_cid = cpu_to_le32(p_conn->icid);
545 ucval = p_conn->remote_mac[1];
546 ((u8 *)(&p_ramrod->remote_mac_addr_hi))[0] = ucval;
547 ucval = p_conn->remote_mac[0];
548 ((u8 *)(&p_ramrod->remote_mac_addr_hi))[1] = ucval;
549 ucval = p_conn->remote_mac[3];
550 ((u8 *)(&p_ramrod->remote_mac_addr_mid))[0] = ucval;
551 ucval = p_conn->remote_mac[2];
552 ((u8 *)(&p_ramrod->remote_mac_addr_mid))[1] = ucval;
553 ucval = p_conn->remote_mac[5];
554 ((u8 *)(&p_ramrod->remote_mac_addr_lo))[0] = ucval;
555 ucval = p_conn->remote_mac[4];
556 ((u8 *)(&p_ramrod->remote_mac_addr_lo))[1] = ucval;
557
558 return qed_spq_post(p_hwfn, p_ent, NULL);
559}
560
561static int qed_sp_iscsi_conn_terminate(struct qed_hwfn *p_hwfn,
562 struct qed_iscsi_conn *p_conn,
563 enum spq_mode comp_mode,
564 struct qed_spq_comp_cb *p_comp_addr)
565{
566 struct iscsi_spe_conn_termination *p_ramrod = NULL;
567 struct qed_spq_entry *p_ent = NULL;
568 struct qed_sp_init_data init_data;
569 int rc = -EINVAL;
570
571
572 memset(&init_data, 0, sizeof(init_data));
573 init_data.cid = p_conn->icid;
574 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
575 init_data.comp_mode = comp_mode;
576 init_data.p_comp_data = p_comp_addr;
577
578 rc = qed_sp_init_request(p_hwfn, &p_ent,
579 ISCSI_RAMROD_CMD_ID_TERMINATION_CONN,
580 PROTOCOLID_ISCSI, &init_data);
581 if (rc)
582 return rc;
583
584 p_ramrod = &p_ent->ramrod.iscsi_conn_terminate;
585 p_ramrod->hdr.op_code = ISCSI_RAMROD_CMD_ID_TERMINATION_CONN;
586 SET_FIELD(p_ramrod->hdr.flags,
587 ISCSI_SLOW_PATH_HDR_LAYER_CODE, p_conn->layer_code);
588
589 p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id);
590 p_ramrod->fw_cid = cpu_to_le32(p_conn->icid);
591 p_ramrod->abortive = p_conn->abortive_dsconnect;
592
593 DMA_REGPAIR_LE(p_ramrod->query_params_addr,
594 p_conn->tcp_upload_params_phys_addr);
595 DMA_REGPAIR_LE(p_ramrod->queue_cnts_addr, p_conn->queue_cnts_phys_addr);
596
597 return qed_spq_post(p_hwfn, p_ent, NULL);
598}
599
600static int qed_sp_iscsi_conn_clear_sq(struct qed_hwfn *p_hwfn,
601 struct qed_iscsi_conn *p_conn,
602 enum spq_mode comp_mode,
603 struct qed_spq_comp_cb *p_comp_addr)
604{
605 struct iscsi_slow_path_hdr *p_ramrod = NULL;
606 struct qed_spq_entry *p_ent = NULL;
607 struct qed_sp_init_data init_data;
608 int rc = -EINVAL;
609
610
611 memset(&init_data, 0, sizeof(init_data));
612 init_data.cid = p_conn->icid;
613 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
614 init_data.comp_mode = comp_mode;
615 init_data.p_comp_data = p_comp_addr;
616
617 rc = qed_sp_init_request(p_hwfn, &p_ent,
618 ISCSI_RAMROD_CMD_ID_CLEAR_SQ,
619 PROTOCOLID_ISCSI, &init_data);
620 if (rc)
621 return rc;
622
623 p_ramrod = &p_ent->ramrod.iscsi_empty;
624 p_ramrod->op_code = ISCSI_RAMROD_CMD_ID_CLEAR_SQ;
625 SET_FIELD(p_ramrod->flags,
626 ISCSI_SLOW_PATH_HDR_LAYER_CODE, p_conn->layer_code);
627
628 return qed_spq_post(p_hwfn, p_ent, NULL);
629}
630
631static int qed_sp_iscsi_func_stop(struct qed_hwfn *p_hwfn,
632 enum spq_mode comp_mode,
633 struct qed_spq_comp_cb *p_comp_addr)
634{
635 struct iscsi_spe_func_dstry *p_ramrod = NULL;
636 struct qed_spq_entry *p_ent = NULL;
637 struct qed_sp_init_data init_data;
638 int rc = 0;
639
640
641 memset(&init_data, 0, sizeof(init_data));
642 init_data.cid = qed_spq_get_cid(p_hwfn);
643 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
644 init_data.comp_mode = comp_mode;
645 init_data.p_comp_data = p_comp_addr;
646
647 rc = qed_sp_init_request(p_hwfn, &p_ent,
648 ISCSI_RAMROD_CMD_ID_DESTROY_FUNC,
649 PROTOCOLID_ISCSI, &init_data);
650 if (rc)
651 return rc;
652
653 p_ramrod = &p_ent->ramrod.iscsi_destroy;
654 p_ramrod->hdr.op_code = ISCSI_RAMROD_CMD_ID_DESTROY_FUNC;
655
656 rc = qed_spq_post(p_hwfn, p_ent, NULL);
657
658 qed_spq_unregister_async_cb(p_hwfn, PROTOCOLID_ISCSI);
659 return rc;
660}
661
662static void __iomem *qed_iscsi_get_db_addr(struct qed_hwfn *p_hwfn, u32 cid)
663{
664 return (u8 __iomem *)p_hwfn->doorbells +
665 qed_db_addr(cid, DQ_DEMS_LEGACY);
666}
667
668static void __iomem *qed_iscsi_get_primary_bdq_prod(struct qed_hwfn *p_hwfn,
669 u8 bdq_id)
670{
671 if (RESC_NUM(p_hwfn, QED_BDQ)) {
672 return (u8 __iomem *)p_hwfn->regview +
673 GTT_BAR0_MAP_REG_MSDM_RAM +
674 MSTORM_SCSI_BDQ_EXT_PROD_OFFSET(RESC_START(p_hwfn,
675 QED_BDQ),
676 bdq_id);
677 } else {
678 DP_NOTICE(p_hwfn, "BDQ is not allocated!\n");
679 return NULL;
680 }
681}
682
683static void __iomem *qed_iscsi_get_secondary_bdq_prod(struct qed_hwfn *p_hwfn,
684 u8 bdq_id)
685{
686 if (RESC_NUM(p_hwfn, QED_BDQ)) {
687 return (u8 __iomem *)p_hwfn->regview +
688 GTT_BAR0_MAP_REG_TSDM_RAM +
689 TSTORM_SCSI_BDQ_EXT_PROD_OFFSET(RESC_START(p_hwfn,
690 QED_BDQ),
691 bdq_id);
692 } else {
693 DP_NOTICE(p_hwfn, "BDQ is not allocated!\n");
694 return NULL;
695 }
696}
697
698static int qed_iscsi_setup_connection(struct qed_iscsi_conn *p_conn)
699{
700 if (!p_conn->queue_cnts_virt_addr)
701 goto nomem;
702 memset(p_conn->queue_cnts_virt_addr, 0,
703 sizeof(*p_conn->queue_cnts_virt_addr));
704
705 if (!p_conn->tcp_upload_params_virt_addr)
706 goto nomem;
707 memset(p_conn->tcp_upload_params_virt_addr, 0,
708 sizeof(*p_conn->tcp_upload_params_virt_addr));
709
710 if (!p_conn->r2tq.p_virt_addr)
711 goto nomem;
712 qed_chain_pbl_zero_mem(&p_conn->r2tq);
713
714 if (!p_conn->uhq.p_virt_addr)
715 goto nomem;
716 qed_chain_pbl_zero_mem(&p_conn->uhq);
717
718 if (!p_conn->xhq.p_virt_addr)
719 goto nomem;
720 qed_chain_pbl_zero_mem(&p_conn->xhq);
721
722 return 0;
723nomem:
724 return -ENOMEM;
725}
726
727static int qed_iscsi_allocate_connection(struct qed_hwfn *p_hwfn,
728 struct qed_iscsi_conn **p_out_conn)
729{
730 u16 uhq_num_elements = 0, xhq_num_elements = 0, r2tq_num_elements = 0;
731 struct scsi_terminate_extra_params *p_q_cnts = NULL;
732 struct qed_iscsi_pf_params *p_params = NULL;
733 struct tcp_upload_params *p_tcp = NULL;
734 struct qed_iscsi_conn *p_conn = NULL;
735 int rc = 0;
736
737
738 spin_lock_bh(&p_hwfn->p_iscsi_info->lock);
739 if (!list_empty(&p_hwfn->p_iscsi_info->free_list))
740 p_conn = list_first_entry(&p_hwfn->p_iscsi_info->free_list,
741 struct qed_iscsi_conn, list_entry);
742 if (p_conn) {
743 list_del(&p_conn->list_entry);
744 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock);
745 *p_out_conn = p_conn;
746 return 0;
747 }
748 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock);
749
750
751 p_params = &p_hwfn->pf_params.iscsi_pf_params;
752
753 p_conn = kzalloc(sizeof(*p_conn), GFP_KERNEL);
754 if (!p_conn)
755 return -ENOMEM;
756
757 p_q_cnts = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev,
758 sizeof(*p_q_cnts),
759 &p_conn->queue_cnts_phys_addr,
760 GFP_KERNEL);
761 if (!p_q_cnts)
762 goto nomem_queue_cnts_param;
763 p_conn->queue_cnts_virt_addr = p_q_cnts;
764
765 p_tcp = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev,
766 sizeof(*p_tcp),
767 &p_conn->tcp_upload_params_phys_addr,
768 GFP_KERNEL);
769 if (!p_tcp)
770 goto nomem_upload_param;
771 p_conn->tcp_upload_params_virt_addr = p_tcp;
772
773 r2tq_num_elements = p_params->num_r2tq_pages_in_ring *
774 QED_CHAIN_PAGE_SIZE / 0x80;
775 rc = qed_chain_alloc(p_hwfn->cdev,
776 QED_CHAIN_USE_TO_CONSUME_PRODUCE,
777 QED_CHAIN_MODE_PBL,
778 QED_CHAIN_CNT_TYPE_U16,
779 r2tq_num_elements, 0x80, &p_conn->r2tq, NULL);
780 if (rc)
781 goto nomem_r2tq;
782
783 uhq_num_elements = p_params->num_uhq_pages_in_ring *
784 QED_CHAIN_PAGE_SIZE / sizeof(struct iscsi_uhqe);
785 rc = qed_chain_alloc(p_hwfn->cdev,
786 QED_CHAIN_USE_TO_CONSUME_PRODUCE,
787 QED_CHAIN_MODE_PBL,
788 QED_CHAIN_CNT_TYPE_U16,
789 uhq_num_elements,
790 sizeof(struct iscsi_uhqe), &p_conn->uhq, NULL);
791 if (rc)
792 goto nomem_uhq;
793
794 xhq_num_elements = uhq_num_elements;
795 rc = qed_chain_alloc(p_hwfn->cdev,
796 QED_CHAIN_USE_TO_CONSUME_PRODUCE,
797 QED_CHAIN_MODE_PBL,
798 QED_CHAIN_CNT_TYPE_U16,
799 xhq_num_elements,
800 sizeof(struct iscsi_xhqe), &p_conn->xhq, NULL);
801 if (rc)
802 goto nomem;
803
804 p_conn->free_on_delete = true;
805 *p_out_conn = p_conn;
806 return 0;
807
808nomem:
809 qed_chain_free(p_hwfn->cdev, &p_conn->uhq);
810nomem_uhq:
811 qed_chain_free(p_hwfn->cdev, &p_conn->r2tq);
812nomem_r2tq:
813 dma_free_coherent(&p_hwfn->cdev->pdev->dev,
814 sizeof(struct tcp_upload_params),
815 p_conn->tcp_upload_params_virt_addr,
816 p_conn->tcp_upload_params_phys_addr);
817nomem_upload_param:
818 dma_free_coherent(&p_hwfn->cdev->pdev->dev,
819 sizeof(struct scsi_terminate_extra_params),
820 p_conn->queue_cnts_virt_addr,
821 p_conn->queue_cnts_phys_addr);
822nomem_queue_cnts_param:
823 kfree(p_conn);
824
825 return -ENOMEM;
826}
827
828static int qed_iscsi_acquire_connection(struct qed_hwfn *p_hwfn,
829 struct qed_iscsi_conn *p_in_conn,
830 struct qed_iscsi_conn **p_out_conn)
831{
832 struct qed_iscsi_conn *p_conn = NULL;
833 int rc = 0;
834 u32 icid;
835
836 spin_lock_bh(&p_hwfn->p_iscsi_info->lock);
837 rc = qed_cxt_acquire_cid(p_hwfn, PROTOCOLID_ISCSI, &icid);
838 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock);
839 if (rc)
840 return rc;
841
842
843 if (p_in_conn)
844 p_conn = p_in_conn;
845 else
846 rc = qed_iscsi_allocate_connection(p_hwfn, &p_conn);
847
848 if (!rc)
849 rc = qed_iscsi_setup_connection(p_conn);
850
851 if (rc) {
852 spin_lock_bh(&p_hwfn->p_iscsi_info->lock);
853 qed_cxt_release_cid(p_hwfn, icid);
854 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock);
855 return rc;
856 }
857
858 p_conn->icid = icid;
859 p_conn->conn_id = (u16)icid;
860 p_conn->fw_cid = (p_hwfn->hw_info.opaque_fid << 16) | icid;
861
862 *p_out_conn = p_conn;
863
864 return rc;
865}
866
867static void qed_iscsi_release_connection(struct qed_hwfn *p_hwfn,
868 struct qed_iscsi_conn *p_conn)
869{
870 spin_lock_bh(&p_hwfn->p_iscsi_info->lock);
871 list_add_tail(&p_conn->list_entry, &p_hwfn->p_iscsi_info->free_list);
872 qed_cxt_release_cid(p_hwfn, p_conn->icid);
873 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock);
874}
875
876static void qed_iscsi_free_connection(struct qed_hwfn *p_hwfn,
877 struct qed_iscsi_conn *p_conn)
878{
879 qed_chain_free(p_hwfn->cdev, &p_conn->xhq);
880 qed_chain_free(p_hwfn->cdev, &p_conn->uhq);
881 qed_chain_free(p_hwfn->cdev, &p_conn->r2tq);
882 dma_free_coherent(&p_hwfn->cdev->pdev->dev,
883 sizeof(struct tcp_upload_params),
884 p_conn->tcp_upload_params_virt_addr,
885 p_conn->tcp_upload_params_phys_addr);
886 dma_free_coherent(&p_hwfn->cdev->pdev->dev,
887 sizeof(struct scsi_terminate_extra_params),
888 p_conn->queue_cnts_virt_addr,
889 p_conn->queue_cnts_phys_addr);
890 kfree(p_conn);
891}
892
893int qed_iscsi_alloc(struct qed_hwfn *p_hwfn)
894{
895 struct qed_iscsi_info *p_iscsi_info;
896
897 p_iscsi_info = kzalloc(sizeof(*p_iscsi_info), GFP_KERNEL);
898 if (!p_iscsi_info)
899 return -ENOMEM;
900
901 INIT_LIST_HEAD(&p_iscsi_info->free_list);
902
903 p_hwfn->p_iscsi_info = p_iscsi_info;
904 return 0;
905}
906
907void qed_iscsi_setup(struct qed_hwfn *p_hwfn)
908{
909 spin_lock_init(&p_hwfn->p_iscsi_info->lock);
910}
911
912void qed_iscsi_free(struct qed_hwfn *p_hwfn)
913{
914 struct qed_iscsi_conn *p_conn = NULL;
915
916 if (!p_hwfn->p_iscsi_info)
917 return;
918
919 while (!list_empty(&p_hwfn->p_iscsi_info->free_list)) {
920 p_conn = list_first_entry(&p_hwfn->p_iscsi_info->free_list,
921 struct qed_iscsi_conn, list_entry);
922 if (p_conn) {
923 list_del(&p_conn->list_entry);
924 qed_iscsi_free_connection(p_hwfn, p_conn);
925 }
926 }
927
928 kfree(p_hwfn->p_iscsi_info);
929 p_hwfn->p_iscsi_info = NULL;
930}
931
932static void _qed_iscsi_get_tstats(struct qed_hwfn *p_hwfn,
933 struct qed_ptt *p_ptt,
934 struct qed_iscsi_stats *p_stats)
935{
936 struct tstorm_iscsi_stats_drv tstats;
937 u32 tstats_addr;
938
939 memset(&tstats, 0, sizeof(tstats));
940 tstats_addr = BAR0_MAP_REG_TSDM_RAM +
941 TSTORM_ISCSI_RX_STATS_OFFSET(p_hwfn->rel_pf_id);
942 qed_memcpy_from(p_hwfn, p_ptt, &tstats, tstats_addr, sizeof(tstats));
943
944 p_stats->iscsi_rx_bytes_cnt =
945 HILO_64_REGPAIR(tstats.iscsi_rx_bytes_cnt);
946 p_stats->iscsi_rx_packet_cnt =
947 HILO_64_REGPAIR(tstats.iscsi_rx_packet_cnt);
948 p_stats->iscsi_rx_new_ooo_isle_events_cnt =
949 HILO_64_REGPAIR(tstats.iscsi_rx_new_ooo_isle_events_cnt);
950 p_stats->iscsi_cmdq_threshold_cnt =
951 le32_to_cpu(tstats.iscsi_cmdq_threshold_cnt);
952 p_stats->iscsi_rq_threshold_cnt =
953 le32_to_cpu(tstats.iscsi_rq_threshold_cnt);
954 p_stats->iscsi_immq_threshold_cnt =
955 le32_to_cpu(tstats.iscsi_immq_threshold_cnt);
956}
957
958static void _qed_iscsi_get_mstats(struct qed_hwfn *p_hwfn,
959 struct qed_ptt *p_ptt,
960 struct qed_iscsi_stats *p_stats)
961{
962 struct mstorm_iscsi_stats_drv mstats;
963 u32 mstats_addr;
964
965 memset(&mstats, 0, sizeof(mstats));
966 mstats_addr = BAR0_MAP_REG_MSDM_RAM +
967 MSTORM_ISCSI_RX_STATS_OFFSET(p_hwfn->rel_pf_id);
968 qed_memcpy_from(p_hwfn, p_ptt, &mstats, mstats_addr, sizeof(mstats));
969
970 p_stats->iscsi_rx_dropped_pdus_task_not_valid =
971 HILO_64_REGPAIR(mstats.iscsi_rx_dropped_pdus_task_not_valid);
972}
973
974static void _qed_iscsi_get_ustats(struct qed_hwfn *p_hwfn,
975 struct qed_ptt *p_ptt,
976 struct qed_iscsi_stats *p_stats)
977{
978 struct ustorm_iscsi_stats_drv ustats;
979 u32 ustats_addr;
980
981 memset(&ustats, 0, sizeof(ustats));
982 ustats_addr = BAR0_MAP_REG_USDM_RAM +
983 USTORM_ISCSI_RX_STATS_OFFSET(p_hwfn->rel_pf_id);
984 qed_memcpy_from(p_hwfn, p_ptt, &ustats, ustats_addr, sizeof(ustats));
985
986 p_stats->iscsi_rx_data_pdu_cnt =
987 HILO_64_REGPAIR(ustats.iscsi_rx_data_pdu_cnt);
988 p_stats->iscsi_rx_r2t_pdu_cnt =
989 HILO_64_REGPAIR(ustats.iscsi_rx_r2t_pdu_cnt);
990 p_stats->iscsi_rx_total_pdu_cnt =
991 HILO_64_REGPAIR(ustats.iscsi_rx_total_pdu_cnt);
992}
993
994static void _qed_iscsi_get_xstats(struct qed_hwfn *p_hwfn,
995 struct qed_ptt *p_ptt,
996 struct qed_iscsi_stats *p_stats)
997{
998 struct xstorm_iscsi_stats_drv xstats;
999 u32 xstats_addr;
1000
1001 memset(&xstats, 0, sizeof(xstats));
1002 xstats_addr = BAR0_MAP_REG_XSDM_RAM +
1003 XSTORM_ISCSI_TX_STATS_OFFSET(p_hwfn->rel_pf_id);
1004 qed_memcpy_from(p_hwfn, p_ptt, &xstats, xstats_addr, sizeof(xstats));
1005
1006 p_stats->iscsi_tx_go_to_slow_start_event_cnt =
1007 HILO_64_REGPAIR(xstats.iscsi_tx_go_to_slow_start_event_cnt);
1008 p_stats->iscsi_tx_fast_retransmit_event_cnt =
1009 HILO_64_REGPAIR(xstats.iscsi_tx_fast_retransmit_event_cnt);
1010}
1011
1012static void _qed_iscsi_get_ystats(struct qed_hwfn *p_hwfn,
1013 struct qed_ptt *p_ptt,
1014 struct qed_iscsi_stats *p_stats)
1015{
1016 struct ystorm_iscsi_stats_drv ystats;
1017 u32 ystats_addr;
1018
1019 memset(&ystats, 0, sizeof(ystats));
1020 ystats_addr = BAR0_MAP_REG_YSDM_RAM +
1021 YSTORM_ISCSI_TX_STATS_OFFSET(p_hwfn->rel_pf_id);
1022 qed_memcpy_from(p_hwfn, p_ptt, &ystats, ystats_addr, sizeof(ystats));
1023
1024 p_stats->iscsi_tx_data_pdu_cnt =
1025 HILO_64_REGPAIR(ystats.iscsi_tx_data_pdu_cnt);
1026 p_stats->iscsi_tx_r2t_pdu_cnt =
1027 HILO_64_REGPAIR(ystats.iscsi_tx_r2t_pdu_cnt);
1028 p_stats->iscsi_tx_total_pdu_cnt =
1029 HILO_64_REGPAIR(ystats.iscsi_tx_total_pdu_cnt);
1030}
1031
1032static void _qed_iscsi_get_pstats(struct qed_hwfn *p_hwfn,
1033 struct qed_ptt *p_ptt,
1034 struct qed_iscsi_stats *p_stats)
1035{
1036 struct pstorm_iscsi_stats_drv pstats;
1037 u32 pstats_addr;
1038
1039 memset(&pstats, 0, sizeof(pstats));
1040 pstats_addr = BAR0_MAP_REG_PSDM_RAM +
1041 PSTORM_ISCSI_TX_STATS_OFFSET(p_hwfn->rel_pf_id);
1042 qed_memcpy_from(p_hwfn, p_ptt, &pstats, pstats_addr, sizeof(pstats));
1043
1044 p_stats->iscsi_tx_bytes_cnt =
1045 HILO_64_REGPAIR(pstats.iscsi_tx_bytes_cnt);
1046 p_stats->iscsi_tx_packet_cnt =
1047 HILO_64_REGPAIR(pstats.iscsi_tx_packet_cnt);
1048}
1049
1050static int qed_iscsi_get_stats(struct qed_hwfn *p_hwfn,
1051 struct qed_iscsi_stats *stats)
1052{
1053 struct qed_ptt *p_ptt;
1054
1055 memset(stats, 0, sizeof(*stats));
1056
1057 p_ptt = qed_ptt_acquire(p_hwfn);
1058 if (!p_ptt) {
1059 DP_ERR(p_hwfn, "Failed to acquire ptt\n");
1060 return -EAGAIN;
1061 }
1062
1063 _qed_iscsi_get_tstats(p_hwfn, p_ptt, stats);
1064 _qed_iscsi_get_mstats(p_hwfn, p_ptt, stats);
1065 _qed_iscsi_get_ustats(p_hwfn, p_ptt, stats);
1066
1067 _qed_iscsi_get_xstats(p_hwfn, p_ptt, stats);
1068 _qed_iscsi_get_ystats(p_hwfn, p_ptt, stats);
1069 _qed_iscsi_get_pstats(p_hwfn, p_ptt, stats);
1070
1071 qed_ptt_release(p_hwfn, p_ptt);
1072
1073 return 0;
1074}
1075
1076struct qed_hash_iscsi_con {
1077 struct hlist_node node;
1078 struct qed_iscsi_conn *con;
1079};
1080
1081static int qed_fill_iscsi_dev_info(struct qed_dev *cdev,
1082 struct qed_dev_iscsi_info *info)
1083{
1084 struct qed_hwfn *hwfn = QED_LEADING_HWFN(cdev);
1085
1086 int rc;
1087
1088 memset(info, 0, sizeof(*info));
1089 rc = qed_fill_dev_info(cdev, &info->common);
1090
1091 info->primary_dbq_rq_addr =
1092 qed_iscsi_get_primary_bdq_prod(hwfn, BDQ_ID_RQ);
1093 info->secondary_bdq_rq_addr =
1094 qed_iscsi_get_secondary_bdq_prod(hwfn, BDQ_ID_RQ);
1095
1096 info->num_cqs = FEAT_NUM(hwfn, QED_ISCSI_CQ);
1097
1098 return rc;
1099}
1100
1101static void qed_register_iscsi_ops(struct qed_dev *cdev,
1102 struct qed_iscsi_cb_ops *ops, void *cookie)
1103{
1104 cdev->protocol_ops.iscsi = ops;
1105 cdev->ops_cookie = cookie;
1106}
1107
1108static struct qed_hash_iscsi_con *qed_iscsi_get_hash(struct qed_dev *cdev,
1109 u32 handle)
1110{
1111 struct qed_hash_iscsi_con *hash_con = NULL;
1112
1113 if (!(cdev->flags & QED_FLAG_STORAGE_STARTED))
1114 return NULL;
1115
1116 hash_for_each_possible(cdev->connections, hash_con, node, handle) {
1117 if (hash_con->con->icid == handle)
1118 break;
1119 }
1120
1121 if (!hash_con || (hash_con->con->icid != handle))
1122 return NULL;
1123
1124 return hash_con;
1125}
1126
1127static int qed_iscsi_stop(struct qed_dev *cdev)
1128{
1129 int rc;
1130
1131 if (!(cdev->flags & QED_FLAG_STORAGE_STARTED)) {
1132 DP_NOTICE(cdev, "iscsi already stopped\n");
1133 return 0;
1134 }
1135
1136 if (!hash_empty(cdev->connections)) {
1137 DP_NOTICE(cdev,
1138 "Can't stop iscsi - not all connections were returned\n");
1139 return -EINVAL;
1140 }
1141
1142
1143 rc = qed_sp_iscsi_func_stop(QED_LEADING_HWFN(cdev),
1144 QED_SPQ_MODE_EBLOCK, NULL);
1145 cdev->flags &= ~QED_FLAG_STORAGE_STARTED;
1146
1147 return rc;
1148}
1149
1150static int qed_iscsi_start(struct qed_dev *cdev,
1151 struct qed_iscsi_tid *tasks,
1152 void *event_context,
1153 iscsi_event_cb_t async_event_cb)
1154{
1155 int rc;
1156 struct qed_tid_mem *tid_info;
1157
1158 if (cdev->flags & QED_FLAG_STORAGE_STARTED) {
1159 DP_NOTICE(cdev, "iscsi already started;\n");
1160 return 0;
1161 }
1162
1163 rc = qed_sp_iscsi_func_start(QED_LEADING_HWFN(cdev),
1164 QED_SPQ_MODE_EBLOCK, NULL, event_context,
1165 async_event_cb);
1166 if (rc) {
1167 DP_NOTICE(cdev, "Failed to start iscsi\n");
1168 return rc;
1169 }
1170
1171 cdev->flags |= QED_FLAG_STORAGE_STARTED;
1172 hash_init(cdev->connections);
1173
1174 if (!tasks)
1175 return 0;
1176
1177 tid_info = kzalloc(sizeof(*tid_info), GFP_KERNEL);
1178
1179 if (!tid_info) {
1180 qed_iscsi_stop(cdev);
1181 return -ENOMEM;
1182 }
1183
1184 rc = qed_cxt_get_tid_mem_info(QED_LEADING_HWFN(cdev),
1185 tid_info);
1186 if (rc) {
1187 DP_NOTICE(cdev, "Failed to gather task information\n");
1188 qed_iscsi_stop(cdev);
1189 kfree(tid_info);
1190 return rc;
1191 }
1192
1193
1194 tasks->size = tid_info->tid_size;
1195 tasks->num_tids_per_block = tid_info->num_tids_per_block;
1196 memcpy(tasks->blocks, tid_info->blocks,
1197 MAX_TID_BLOCKS_ISCSI * sizeof(u8 *));
1198
1199 kfree(tid_info);
1200
1201 return 0;
1202}
1203
1204static int qed_iscsi_acquire_conn(struct qed_dev *cdev,
1205 u32 *handle,
1206 u32 *fw_cid, void __iomem **p_doorbell)
1207{
1208 struct qed_hash_iscsi_con *hash_con;
1209 int rc;
1210
1211
1212 hash_con = kzalloc(sizeof(*hash_con), GFP_ATOMIC);
1213 if (!hash_con)
1214 return -ENOMEM;
1215
1216
1217 rc = qed_iscsi_acquire_connection(QED_LEADING_HWFN(cdev), NULL,
1218 &hash_con->con);
1219 if (rc) {
1220 DP_NOTICE(cdev, "Failed to acquire Connection\n");
1221 kfree(hash_con);
1222 return rc;
1223 }
1224
1225
1226 *handle = hash_con->con->icid;
1227 *fw_cid = hash_con->con->fw_cid;
1228 hash_add(cdev->connections, &hash_con->node, *handle);
1229
1230 if (p_doorbell)
1231 *p_doorbell = qed_iscsi_get_db_addr(QED_LEADING_HWFN(cdev),
1232 *handle);
1233
1234 return 0;
1235}
1236
1237static int qed_iscsi_release_conn(struct qed_dev *cdev, u32 handle)
1238{
1239 struct qed_hash_iscsi_con *hash_con;
1240
1241 hash_con = qed_iscsi_get_hash(cdev, handle);
1242 if (!hash_con) {
1243 DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
1244 handle);
1245 return -EINVAL;
1246 }
1247
1248 hlist_del(&hash_con->node);
1249 qed_iscsi_release_connection(QED_LEADING_HWFN(cdev), hash_con->con);
1250 kfree(hash_con);
1251
1252 return 0;
1253}
1254
1255static int qed_iscsi_offload_conn(struct qed_dev *cdev,
1256 u32 handle,
1257 struct qed_iscsi_params_offload *conn_info)
1258{
1259 struct qed_hash_iscsi_con *hash_con;
1260 struct qed_iscsi_conn *con;
1261
1262 hash_con = qed_iscsi_get_hash(cdev, handle);
1263 if (!hash_con) {
1264 DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
1265 handle);
1266 return -EINVAL;
1267 }
1268
1269
1270 con = hash_con->con;
1271
1272 ether_addr_copy(con->local_mac, conn_info->src.mac);
1273 ether_addr_copy(con->remote_mac, conn_info->dst.mac);
1274 memcpy(con->local_ip, conn_info->src.ip, sizeof(con->local_ip));
1275 memcpy(con->remote_ip, conn_info->dst.ip, sizeof(con->remote_ip));
1276 con->local_port = conn_info->src.port;
1277 con->remote_port = conn_info->dst.port;
1278
1279 con->layer_code = conn_info->layer_code;
1280 con->sq_pbl_addr = conn_info->sq_pbl_addr;
1281 con->initial_ack = conn_info->initial_ack;
1282 con->vlan_id = conn_info->vlan_id;
1283 con->tcp_flags = conn_info->tcp_flags;
1284 con->ip_version = conn_info->ip_version;
1285 con->default_cq = conn_info->default_cq;
1286 con->ka_max_probe_cnt = conn_info->ka_max_probe_cnt;
1287 con->dup_ack_theshold = conn_info->dup_ack_theshold;
1288 con->rcv_next = conn_info->rcv_next;
1289 con->snd_una = conn_info->snd_una;
1290 con->snd_next = conn_info->snd_next;
1291 con->snd_max = conn_info->snd_max;
1292 con->snd_wnd = conn_info->snd_wnd;
1293 con->rcv_wnd = conn_info->rcv_wnd;
1294 con->snd_wl1 = conn_info->snd_wl1;
1295 con->cwnd = conn_info->cwnd;
1296 con->ss_thresh = conn_info->ss_thresh;
1297 con->srtt = conn_info->srtt;
1298 con->rtt_var = conn_info->rtt_var;
1299 con->ts_recent = conn_info->ts_recent;
1300 con->ts_recent_age = conn_info->ts_recent_age;
1301 con->total_rt = conn_info->total_rt;
1302 con->ka_timeout_delta = conn_info->ka_timeout_delta;
1303 con->rt_timeout_delta = conn_info->rt_timeout_delta;
1304 con->dup_ack_cnt = conn_info->dup_ack_cnt;
1305 con->snd_wnd_probe_cnt = conn_info->snd_wnd_probe_cnt;
1306 con->ka_probe_cnt = conn_info->ka_probe_cnt;
1307 con->rt_cnt = conn_info->rt_cnt;
1308 con->flow_label = conn_info->flow_label;
1309 con->ka_timeout = conn_info->ka_timeout;
1310 con->ka_interval = conn_info->ka_interval;
1311 con->max_rt_time = conn_info->max_rt_time;
1312 con->initial_rcv_wnd = conn_info->initial_rcv_wnd;
1313 con->ttl = conn_info->ttl;
1314 con->tos_or_tc = conn_info->tos_or_tc;
1315 con->remote_port = conn_info->remote_port;
1316 con->local_port = conn_info->local_port;
1317 con->mss = conn_info->mss;
1318 con->snd_wnd_scale = conn_info->snd_wnd_scale;
1319 con->rcv_wnd_scale = conn_info->rcv_wnd_scale;
1320 con->da_timeout_value = conn_info->da_timeout_value;
1321 con->ack_frequency = conn_info->ack_frequency;
1322
1323
1324 con->offl_flags = 0x1;
1325
1326 return qed_sp_iscsi_conn_offload(QED_LEADING_HWFN(cdev), con,
1327 QED_SPQ_MODE_EBLOCK, NULL);
1328}
1329
1330static int qed_iscsi_update_conn(struct qed_dev *cdev,
1331 u32 handle,
1332 struct qed_iscsi_params_update *conn_info)
1333{
1334 struct qed_hash_iscsi_con *hash_con;
1335 struct qed_iscsi_conn *con;
1336
1337 hash_con = qed_iscsi_get_hash(cdev, handle);
1338 if (!hash_con) {
1339 DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
1340 handle);
1341 return -EINVAL;
1342 }
1343
1344
1345 con = hash_con->con;
1346 con->update_flag = conn_info->update_flag;
1347 con->max_seq_size = conn_info->max_seq_size;
1348 con->max_recv_pdu_length = conn_info->max_recv_pdu_length;
1349 con->max_send_pdu_length = conn_info->max_send_pdu_length;
1350 con->first_seq_length = conn_info->first_seq_length;
1351 con->exp_stat_sn = conn_info->exp_stat_sn;
1352
1353 return qed_sp_iscsi_conn_update(QED_LEADING_HWFN(cdev), con,
1354 QED_SPQ_MODE_EBLOCK, NULL);
1355}
1356
1357static int qed_iscsi_clear_conn_sq(struct qed_dev *cdev, u32 handle)
1358{
1359 struct qed_hash_iscsi_con *hash_con;
1360
1361 hash_con = qed_iscsi_get_hash(cdev, handle);
1362 if (!hash_con) {
1363 DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
1364 handle);
1365 return -EINVAL;
1366 }
1367
1368 return qed_sp_iscsi_conn_clear_sq(QED_LEADING_HWFN(cdev),
1369 hash_con->con,
1370 QED_SPQ_MODE_EBLOCK, NULL);
1371}
1372
1373static int qed_iscsi_destroy_conn(struct qed_dev *cdev,
1374 u32 handle, u8 abrt_conn)
1375{
1376 struct qed_hash_iscsi_con *hash_con;
1377
1378 hash_con = qed_iscsi_get_hash(cdev, handle);
1379 if (!hash_con) {
1380 DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
1381 handle);
1382 return -EINVAL;
1383 }
1384
1385 hash_con->con->abortive_dsconnect = abrt_conn;
1386
1387 return qed_sp_iscsi_conn_terminate(QED_LEADING_HWFN(cdev),
1388 hash_con->con,
1389 QED_SPQ_MODE_EBLOCK, NULL);
1390}
1391
1392static int qed_iscsi_stats(struct qed_dev *cdev, struct qed_iscsi_stats *stats)
1393{
1394 return qed_iscsi_get_stats(QED_LEADING_HWFN(cdev), stats);
1395}
1396
1397static int qed_iscsi_change_mac(struct qed_dev *cdev,
1398 u32 handle, const u8 *mac)
1399{
1400 struct qed_hash_iscsi_con *hash_con;
1401
1402 hash_con = qed_iscsi_get_hash(cdev, handle);
1403 if (!hash_con) {
1404 DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
1405 handle);
1406 return -EINVAL;
1407 }
1408
1409 return qed_sp_iscsi_mac_update(QED_LEADING_HWFN(cdev),
1410 hash_con->con,
1411 QED_SPQ_MODE_EBLOCK, NULL);
1412}
1413
1414void qed_get_protocol_stats_iscsi(struct qed_dev *cdev,
1415 struct qed_mcp_iscsi_stats *stats)
1416{
1417 struct qed_iscsi_stats proto_stats;
1418
1419
1420 memset(&proto_stats, 0, sizeof(proto_stats));
1421 if (qed_iscsi_stats(cdev, &proto_stats)) {
1422 DP_VERBOSE(cdev, QED_MSG_STORAGE,
1423 "Failed to collect ISCSI statistics\n");
1424 return;
1425 }
1426
1427
1428 stats->rx_pdus = proto_stats.iscsi_rx_total_pdu_cnt;
1429 stats->tx_pdus = proto_stats.iscsi_tx_total_pdu_cnt;
1430 stats->rx_bytes = proto_stats.iscsi_rx_bytes_cnt;
1431 stats->tx_bytes = proto_stats.iscsi_tx_bytes_cnt;
1432}
1433
1434static const struct qed_iscsi_ops qed_iscsi_ops_pass = {
1435 .common = &qed_common_ops_pass,
1436 .ll2 = &qed_ll2_ops_pass,
1437 .fill_dev_info = &qed_fill_iscsi_dev_info,
1438 .register_ops = &qed_register_iscsi_ops,
1439 .start = &qed_iscsi_start,
1440 .stop = &qed_iscsi_stop,
1441 .acquire_conn = &qed_iscsi_acquire_conn,
1442 .release_conn = &qed_iscsi_release_conn,
1443 .offload_conn = &qed_iscsi_offload_conn,
1444 .update_conn = &qed_iscsi_update_conn,
1445 .destroy_conn = &qed_iscsi_destroy_conn,
1446 .clear_sq = &qed_iscsi_clear_conn_sq,
1447 .get_stats = &qed_iscsi_stats,
1448 .change_mac = &qed_iscsi_change_mac,
1449};
1450
1451const struct qed_iscsi_ops *qed_get_iscsi_ops(void)
1452{
1453 return &qed_iscsi_ops_pass;
1454}
1455EXPORT_SYMBOL(qed_get_iscsi_ops);
1456
1457void qed_put_iscsi_ops(void)
1458{
1459}
1460EXPORT_SYMBOL(qed_put_iscsi_ops);
1461
