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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 qed_sp_destroy_request(p_hwfn, p_ent);
204 return -EINVAL;
205 }
206
207 SET_FIELD(p_init->hdr.flags,
208 ISCSI_SLOW_PATH_HDR_LAYER_CODE, ISCSI_SLOW_PATH_LAYER_CODE);
209 p_init->hdr.op_code = ISCSI_RAMROD_CMD_ID_INIT_FUNC;
210
211 val = p_params->half_way_close_timeout;
212 p_init->half_way_close_timeout = cpu_to_le16(val);
213 p_init->num_sq_pages_in_ring = p_params->num_sq_pages_in_ring;
214 p_init->num_r2tq_pages_in_ring = p_params->num_r2tq_pages_in_ring;
215 p_init->num_uhq_pages_in_ring = p_params->num_uhq_pages_in_ring;
216 p_init->ll2_rx_queue_id = p_hwfn->hw_info.resc_start[QED_LL2_QUEUE] +
217 p_params->ll2_ooo_queue_id;
218
219 p_init->func_params.log_page_size = p_params->log_page_size;
220 val = p_params->num_tasks;
221 p_init->func_params.num_tasks = cpu_to_le16(val);
222 p_init->debug_mode.flags = p_params->debug_mode;
223
224 DMA_REGPAIR_LE(p_queue->glbl_q_params_addr,
225 p_params->glbl_q_params_addr);
226
227 val = p_params->cq_num_entries;
228 p_queue->cq_num_entries = cpu_to_le16(val);
229 val = p_params->cmdq_num_entries;
230 p_queue->cmdq_num_entries = cpu_to_le16(val);
231 p_queue->num_queues = p_params->num_queues;
232 dval = (u8)p_hwfn->hw_info.resc_start[QED_CMDQS_CQS];
233 p_queue->queue_relative_offset = (u8)dval;
234 p_queue->cq_sb_pi = p_params->gl_rq_pi;
235 p_queue->cmdq_sb_pi = p_params->gl_cmd_pi;
236
237 for (i = 0; i < p_params->num_queues; i++) {
238 val = qed_get_igu_sb_id(p_hwfn, i);
239 p_queue->cq_cmdq_sb_num_arr[i] = cpu_to_le16(val);
240 }
241
242 p_queue->bdq_resource_id = (u8)RESC_START(p_hwfn, QED_BDQ);
243
244 DMA_REGPAIR_LE(p_queue->bdq_pbl_base_address[BDQ_ID_RQ],
245 p_params->bdq_pbl_base_addr[BDQ_ID_RQ]);
246 p_queue->bdq_pbl_num_entries[BDQ_ID_RQ] =
247 p_params->bdq_pbl_num_entries[BDQ_ID_RQ];
248 val = p_params->bdq_xoff_threshold[BDQ_ID_RQ];
249 p_queue->bdq_xoff_threshold[BDQ_ID_RQ] = cpu_to_le16(val);
250 val = p_params->bdq_xon_threshold[BDQ_ID_RQ];
251 p_queue->bdq_xon_threshold[BDQ_ID_RQ] = cpu_to_le16(val);
252
253 DMA_REGPAIR_LE(p_queue->bdq_pbl_base_address[BDQ_ID_IMM_DATA],
254 p_params->bdq_pbl_base_addr[BDQ_ID_IMM_DATA]);
255 p_queue->bdq_pbl_num_entries[BDQ_ID_IMM_DATA] =
256 p_params->bdq_pbl_num_entries[BDQ_ID_IMM_DATA];
257 val = p_params->bdq_xoff_threshold[BDQ_ID_IMM_DATA];
258 p_queue->bdq_xoff_threshold[BDQ_ID_IMM_DATA] = cpu_to_le16(val);
259 val = p_params->bdq_xon_threshold[BDQ_ID_IMM_DATA];
260 p_queue->bdq_xon_threshold[BDQ_ID_IMM_DATA] = cpu_to_le16(val);
261 val = p_params->rq_buffer_size;
262 p_queue->rq_buffer_size = cpu_to_le16(val);
263 if (p_params->is_target) {
264 SET_FIELD(p_queue->q_validity,
265 SCSI_INIT_FUNC_QUEUES_RQ_VALID, 1);
266 if (p_queue->bdq_pbl_num_entries[BDQ_ID_IMM_DATA])
267 SET_FIELD(p_queue->q_validity,
268 SCSI_INIT_FUNC_QUEUES_IMM_DATA_VALID, 1);
269 SET_FIELD(p_queue->q_validity,
270 SCSI_INIT_FUNC_QUEUES_CMD_VALID, 1);
271 } else {
272 SET_FIELD(p_queue->q_validity,
273 SCSI_INIT_FUNC_QUEUES_RQ_VALID, 1);
274 }
275 p_ramrod->tcp_init.two_msl_timer = cpu_to_le32(p_params->two_msl_timer);
276 val = p_params->tx_sws_timer;
277 p_ramrod->tcp_init.tx_sws_timer = cpu_to_le16(val);
278 p_ramrod->tcp_init.max_fin_rt = p_params->max_fin_rt;
279
280 p_hwfn->p_iscsi_info->event_context = event_context;
281 p_hwfn->p_iscsi_info->event_cb = async_event_cb;
282
283 qed_spq_register_async_cb(p_hwfn, PROTOCOLID_ISCSI,
284 qed_iscsi_async_event);
285
286 return qed_spq_post(p_hwfn, p_ent, NULL);
287}
288
289static int qed_sp_iscsi_conn_offload(struct qed_hwfn *p_hwfn,
290 struct qed_iscsi_conn *p_conn,
291 enum spq_mode comp_mode,
292 struct qed_spq_comp_cb *p_comp_addr)
293{
294 struct iscsi_spe_conn_offload *p_ramrod = NULL;
295 struct tcp_offload_params_opt2 *p_tcp2 = NULL;
296 struct tcp_offload_params *p_tcp = NULL;
297 struct qed_spq_entry *p_ent = NULL;
298 struct qed_sp_init_data init_data;
299 dma_addr_t r2tq_pbl_addr;
300 dma_addr_t xhq_pbl_addr;
301 dma_addr_t uhq_pbl_addr;
302 u16 physical_q;
303 int rc = 0;
304 u32 dval;
305 u16 wval;
306 u16 *p;
307 u8 i;
308
309
310 memset(&init_data, 0, sizeof(init_data));
311 init_data.cid = p_conn->icid;
312 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
313 init_data.comp_mode = comp_mode;
314 init_data.p_comp_data = p_comp_addr;
315
316 rc = qed_sp_init_request(p_hwfn, &p_ent,
317 ISCSI_RAMROD_CMD_ID_OFFLOAD_CONN,
318 PROTOCOLID_ISCSI, &init_data);
319 if (rc)
320 return rc;
321
322 p_ramrod = &p_ent->ramrod.iscsi_conn_offload;
323
324
325 physical_q = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_OFLD);
326 p_conn->physical_q0 = cpu_to_le16(physical_q);
327 p_ramrod->iscsi.physical_q0 = cpu_to_le16(physical_q);
328
329
330 physical_q = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_ACK);
331 p_conn->physical_q1 = cpu_to_le16(physical_q);
332 p_ramrod->iscsi.physical_q1 = cpu_to_le16(physical_q);
333
334 p_ramrod->hdr.op_code = ISCSI_RAMROD_CMD_ID_OFFLOAD_CONN;
335 SET_FIELD(p_ramrod->hdr.flags, ISCSI_SLOW_PATH_HDR_LAYER_CODE,
336 p_conn->layer_code);
337
338 p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id);
339 p_ramrod->fw_cid = cpu_to_le32(p_conn->icid);
340
341 DMA_REGPAIR_LE(p_ramrod->iscsi.sq_pbl_addr, p_conn->sq_pbl_addr);
342
343 r2tq_pbl_addr = qed_chain_get_pbl_phys(&p_conn->r2tq);
344 DMA_REGPAIR_LE(p_ramrod->iscsi.r2tq_pbl_addr, r2tq_pbl_addr);
345
346 xhq_pbl_addr = qed_chain_get_pbl_phys(&p_conn->xhq);
347 DMA_REGPAIR_LE(p_ramrod->iscsi.xhq_pbl_addr, xhq_pbl_addr);
348
349 uhq_pbl_addr = qed_chain_get_pbl_phys(&p_conn->uhq);
350 DMA_REGPAIR_LE(p_ramrod->iscsi.uhq_pbl_addr, uhq_pbl_addr);
351
352 p_ramrod->iscsi.initial_ack = cpu_to_le32(p_conn->initial_ack);
353 p_ramrod->iscsi.flags = p_conn->offl_flags;
354 p_ramrod->iscsi.default_cq = p_conn->default_cq;
355 p_ramrod->iscsi.stat_sn = cpu_to_le32(p_conn->stat_sn);
356
357 if (!GET_FIELD(p_ramrod->iscsi.flags,
358 ISCSI_CONN_OFFLOAD_PARAMS_TCP_ON_CHIP_1B)) {
359 p_tcp = &p_ramrod->tcp;
360
361 p = (u16 *)p_conn->local_mac;
362 p_tcp->local_mac_addr_hi = swab16(get_unaligned(p));
363 p_tcp->local_mac_addr_mid = swab16(get_unaligned(p + 1));
364 p_tcp->local_mac_addr_lo = swab16(get_unaligned(p + 2));
365
366 p = (u16 *)p_conn->remote_mac;
367 p_tcp->remote_mac_addr_hi = swab16(get_unaligned(p));
368 p_tcp->remote_mac_addr_mid = swab16(get_unaligned(p + 1));
369 p_tcp->remote_mac_addr_lo = swab16(get_unaligned(p + 2));
370
371 p_tcp->vlan_id = cpu_to_le16(p_conn->vlan_id);
372
373 p_tcp->flags = cpu_to_le16(p_conn->tcp_flags);
374 p_tcp->ip_version = p_conn->ip_version;
375 for (i = 0; i < 4; i++) {
376 dval = p_conn->remote_ip[i];
377 p_tcp->remote_ip[i] = cpu_to_le32(dval);
378 dval = p_conn->local_ip[i];
379 p_tcp->local_ip[i] = cpu_to_le32(dval);
380 }
381 p_tcp->ka_max_probe_cnt = p_conn->ka_max_probe_cnt;
382 p_tcp->dup_ack_theshold = p_conn->dup_ack_theshold;
383
384 p_tcp->rcv_next = cpu_to_le32(p_conn->rcv_next);
385 p_tcp->snd_una = cpu_to_le32(p_conn->snd_una);
386 p_tcp->snd_next = cpu_to_le32(p_conn->snd_next);
387 p_tcp->snd_max = cpu_to_le32(p_conn->snd_max);
388 p_tcp->snd_wnd = cpu_to_le32(p_conn->snd_wnd);
389 p_tcp->rcv_wnd = cpu_to_le32(p_conn->rcv_wnd);
390 p_tcp->snd_wl1 = cpu_to_le32(p_conn->snd_wl1);
391 p_tcp->cwnd = cpu_to_le32(p_conn->cwnd);
392 p_tcp->ss_thresh = cpu_to_le32(p_conn->ss_thresh);
393 p_tcp->srtt = cpu_to_le16(p_conn->srtt);
394 p_tcp->rtt_var = cpu_to_le16(p_conn->rtt_var);
395 p_tcp->ts_recent = cpu_to_le32(p_conn->ts_recent);
396 p_tcp->ts_recent_age = cpu_to_le32(p_conn->ts_recent_age);
397 p_tcp->total_rt = cpu_to_le32(p_conn->total_rt);
398 dval = p_conn->ka_timeout_delta;
399 p_tcp->ka_timeout_delta = cpu_to_le32(dval);
400 dval = p_conn->rt_timeout_delta;
401 p_tcp->rt_timeout_delta = cpu_to_le32(dval);
402 p_tcp->dup_ack_cnt = p_conn->dup_ack_cnt;
403 p_tcp->snd_wnd_probe_cnt = p_conn->snd_wnd_probe_cnt;
404 p_tcp->ka_probe_cnt = p_conn->ka_probe_cnt;
405 p_tcp->rt_cnt = p_conn->rt_cnt;
406 p_tcp->flow_label = cpu_to_le32(p_conn->flow_label);
407 p_tcp->ka_timeout = cpu_to_le32(p_conn->ka_timeout);
408 p_tcp->ka_interval = cpu_to_le32(p_conn->ka_interval);
409 p_tcp->max_rt_time = cpu_to_le32(p_conn->max_rt_time);
410 dval = p_conn->initial_rcv_wnd;
411 p_tcp->initial_rcv_wnd = cpu_to_le32(dval);
412 p_tcp->ttl = p_conn->ttl;
413 p_tcp->tos_or_tc = p_conn->tos_or_tc;
414 p_tcp->remote_port = cpu_to_le16(p_conn->remote_port);
415 p_tcp->local_port = cpu_to_le16(p_conn->local_port);
416 p_tcp->mss = cpu_to_le16(p_conn->mss);
417 p_tcp->snd_wnd_scale = p_conn->snd_wnd_scale;
418 p_tcp->rcv_wnd_scale = p_conn->rcv_wnd_scale;
419 wval = p_conn->da_timeout_value;
420 p_tcp->da_timeout_value = cpu_to_le16(wval);
421 p_tcp->ack_frequency = p_conn->ack_frequency;
422 p_tcp->connect_mode = p_conn->connect_mode;
423 } else {
424 p_tcp2 =
425 &((struct iscsi_spe_conn_offload_option2 *)p_ramrod)->tcp;
426
427 p = (u16 *)p_conn->local_mac;
428 p_tcp2->local_mac_addr_hi = swab16(get_unaligned(p));
429 p_tcp2->local_mac_addr_mid = swab16(get_unaligned(p + 1));
430 p_tcp2->local_mac_addr_lo = swab16(get_unaligned(p + 2));
431
432 p = (u16 *)p_conn->remote_mac;
433 p_tcp2->remote_mac_addr_hi = swab16(get_unaligned(p));
434 p_tcp2->remote_mac_addr_mid = swab16(get_unaligned(p + 1));
435 p_tcp2->remote_mac_addr_lo = swab16(get_unaligned(p + 2));
436
437 p_tcp2->vlan_id = cpu_to_le16(p_conn->vlan_id);
438 p_tcp2->flags = cpu_to_le16(p_conn->tcp_flags);
439
440 p_tcp2->ip_version = p_conn->ip_version;
441 for (i = 0; i < 4; i++) {
442 dval = p_conn->remote_ip[i];
443 p_tcp2->remote_ip[i] = cpu_to_le32(dval);
444 dval = p_conn->local_ip[i];
445 p_tcp2->local_ip[i] = cpu_to_le32(dval);
446 }
447
448 p_tcp2->flow_label = cpu_to_le32(p_conn->flow_label);
449 p_tcp2->ttl = p_conn->ttl;
450 p_tcp2->tos_or_tc = p_conn->tos_or_tc;
451 p_tcp2->remote_port = cpu_to_le16(p_conn->remote_port);
452 p_tcp2->local_port = cpu_to_le16(p_conn->local_port);
453 p_tcp2->mss = cpu_to_le16(p_conn->mss);
454 p_tcp2->rcv_wnd_scale = p_conn->rcv_wnd_scale;
455 p_tcp2->connect_mode = p_conn->connect_mode;
456 wval = p_conn->syn_ip_payload_length;
457 p_tcp2->syn_ip_payload_length = cpu_to_le16(wval);
458 p_tcp2->syn_phy_addr_lo = DMA_LO_LE(p_conn->syn_phy_addr);
459 p_tcp2->syn_phy_addr_hi = DMA_HI_LE(p_conn->syn_phy_addr);
460 p_tcp2->cwnd = cpu_to_le32(p_conn->cwnd);
461 p_tcp2->ka_max_probe_cnt = p_conn->ka_probe_cnt;
462 p_tcp2->ka_timeout = cpu_to_le32(p_conn->ka_timeout);
463 p_tcp2->max_rt_time = cpu_to_le32(p_conn->max_rt_time);
464 p_tcp2->ka_interval = cpu_to_le32(p_conn->ka_interval);
465 }
466
467 return qed_spq_post(p_hwfn, p_ent, NULL);
468}
469
470static int qed_sp_iscsi_conn_update(struct qed_hwfn *p_hwfn,
471 struct qed_iscsi_conn *p_conn,
472 enum spq_mode comp_mode,
473 struct qed_spq_comp_cb *p_comp_addr)
474{
475 struct iscsi_conn_update_ramrod_params *p_ramrod = NULL;
476 struct qed_spq_entry *p_ent = NULL;
477 struct qed_sp_init_data init_data;
478 int rc = -EINVAL;
479 u32 dval;
480
481
482 memset(&init_data, 0, sizeof(init_data));
483 init_data.cid = p_conn->icid;
484 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
485 init_data.comp_mode = comp_mode;
486 init_data.p_comp_data = p_comp_addr;
487
488 rc = qed_sp_init_request(p_hwfn, &p_ent,
489 ISCSI_RAMROD_CMD_ID_UPDATE_CONN,
490 PROTOCOLID_ISCSI, &init_data);
491 if (rc)
492 return rc;
493
494 p_ramrod = &p_ent->ramrod.iscsi_conn_update;
495 p_ramrod->hdr.op_code = ISCSI_RAMROD_CMD_ID_UPDATE_CONN;
496 SET_FIELD(p_ramrod->hdr.flags,
497 ISCSI_SLOW_PATH_HDR_LAYER_CODE, p_conn->layer_code);
498
499 p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id);
500 p_ramrod->fw_cid = cpu_to_le32(p_conn->icid);
501 p_ramrod->flags = p_conn->update_flag;
502 p_ramrod->max_seq_size = cpu_to_le32(p_conn->max_seq_size);
503 dval = p_conn->max_recv_pdu_length;
504 p_ramrod->max_recv_pdu_length = cpu_to_le32(dval);
505 dval = p_conn->max_send_pdu_length;
506 p_ramrod->max_send_pdu_length = cpu_to_le32(dval);
507 dval = p_conn->first_seq_length;
508 p_ramrod->first_seq_length = cpu_to_le32(dval);
509 p_ramrod->exp_stat_sn = cpu_to_le32(p_conn->exp_stat_sn);
510
511 return qed_spq_post(p_hwfn, p_ent, NULL);
512}
513
514static int
515qed_sp_iscsi_mac_update(struct qed_hwfn *p_hwfn,
516 struct qed_iscsi_conn *p_conn,
517 enum spq_mode comp_mode,
518 struct qed_spq_comp_cb *p_comp_addr)
519{
520 struct iscsi_spe_conn_mac_update *p_ramrod = NULL;
521 struct qed_spq_entry *p_ent = NULL;
522 struct qed_sp_init_data init_data;
523 int rc = -EINVAL;
524 u8 ucval;
525
526
527 memset(&init_data, 0, sizeof(init_data));
528 init_data.cid = p_conn->icid;
529 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
530 init_data.comp_mode = comp_mode;
531 init_data.p_comp_data = p_comp_addr;
532
533 rc = qed_sp_init_request(p_hwfn, &p_ent,
534 ISCSI_RAMROD_CMD_ID_MAC_UPDATE,
535 PROTOCOLID_ISCSI, &init_data);
536 if (rc)
537 return rc;
538
539 p_ramrod = &p_ent->ramrod.iscsi_conn_mac_update;
540 p_ramrod->hdr.op_code = ISCSI_RAMROD_CMD_ID_MAC_UPDATE;
541 SET_FIELD(p_ramrod->hdr.flags,
542 ISCSI_SLOW_PATH_HDR_LAYER_CODE, p_conn->layer_code);
543
544 p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id);
545 p_ramrod->fw_cid = cpu_to_le32(p_conn->icid);
546 ucval = p_conn->remote_mac[1];
547 ((u8 *)(&p_ramrod->remote_mac_addr_hi))[0] = ucval;
548 ucval = p_conn->remote_mac[0];
549 ((u8 *)(&p_ramrod->remote_mac_addr_hi))[1] = ucval;
550 ucval = p_conn->remote_mac[3];
551 ((u8 *)(&p_ramrod->remote_mac_addr_mid))[0] = ucval;
552 ucval = p_conn->remote_mac[2];
553 ((u8 *)(&p_ramrod->remote_mac_addr_mid))[1] = ucval;
554 ucval = p_conn->remote_mac[5];
555 ((u8 *)(&p_ramrod->remote_mac_addr_lo))[0] = ucval;
556 ucval = p_conn->remote_mac[4];
557 ((u8 *)(&p_ramrod->remote_mac_addr_lo))[1] = ucval;
558
559 return qed_spq_post(p_hwfn, p_ent, NULL);
560}
561
562static int qed_sp_iscsi_conn_terminate(struct qed_hwfn *p_hwfn,
563 struct qed_iscsi_conn *p_conn,
564 enum spq_mode comp_mode,
565 struct qed_spq_comp_cb *p_comp_addr)
566{
567 struct iscsi_spe_conn_termination *p_ramrod = NULL;
568 struct qed_spq_entry *p_ent = NULL;
569 struct qed_sp_init_data init_data;
570 int rc = -EINVAL;
571
572
573 memset(&init_data, 0, sizeof(init_data));
574 init_data.cid = p_conn->icid;
575 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
576 init_data.comp_mode = comp_mode;
577 init_data.p_comp_data = p_comp_addr;
578
579 rc = qed_sp_init_request(p_hwfn, &p_ent,
580 ISCSI_RAMROD_CMD_ID_TERMINATION_CONN,
581 PROTOCOLID_ISCSI, &init_data);
582 if (rc)
583 return rc;
584
585 p_ramrod = &p_ent->ramrod.iscsi_conn_terminate;
586 p_ramrod->hdr.op_code = ISCSI_RAMROD_CMD_ID_TERMINATION_CONN;
587 SET_FIELD(p_ramrod->hdr.flags,
588 ISCSI_SLOW_PATH_HDR_LAYER_CODE, p_conn->layer_code);
589
590 p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id);
591 p_ramrod->fw_cid = cpu_to_le32(p_conn->icid);
592 p_ramrod->abortive = p_conn->abortive_dsconnect;
593
594 DMA_REGPAIR_LE(p_ramrod->query_params_addr,
595 p_conn->tcp_upload_params_phys_addr);
596 DMA_REGPAIR_LE(p_ramrod->queue_cnts_addr, p_conn->queue_cnts_phys_addr);
597
598 return qed_spq_post(p_hwfn, p_ent, NULL);
599}
600
601static int qed_sp_iscsi_conn_clear_sq(struct qed_hwfn *p_hwfn,
602 struct qed_iscsi_conn *p_conn,
603 enum spq_mode comp_mode,
604 struct qed_spq_comp_cb *p_comp_addr)
605{
606 struct iscsi_slow_path_hdr *p_ramrod = NULL;
607 struct qed_spq_entry *p_ent = NULL;
608 struct qed_sp_init_data init_data;
609 int rc = -EINVAL;
610
611
612 memset(&init_data, 0, sizeof(init_data));
613 init_data.cid = p_conn->icid;
614 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
615 init_data.comp_mode = comp_mode;
616 init_data.p_comp_data = p_comp_addr;
617
618 rc = qed_sp_init_request(p_hwfn, &p_ent,
619 ISCSI_RAMROD_CMD_ID_CLEAR_SQ,
620 PROTOCOLID_ISCSI, &init_data);
621 if (rc)
622 return rc;
623
624 p_ramrod = &p_ent->ramrod.iscsi_empty;
625 p_ramrod->op_code = ISCSI_RAMROD_CMD_ID_CLEAR_SQ;
626 SET_FIELD(p_ramrod->flags,
627 ISCSI_SLOW_PATH_HDR_LAYER_CODE, p_conn->layer_code);
628
629 return qed_spq_post(p_hwfn, p_ent, NULL);
630}
631
632static int qed_sp_iscsi_func_stop(struct qed_hwfn *p_hwfn,
633 enum spq_mode comp_mode,
634 struct qed_spq_comp_cb *p_comp_addr)
635{
636 struct iscsi_spe_func_dstry *p_ramrod = NULL;
637 struct qed_spq_entry *p_ent = NULL;
638 struct qed_sp_init_data init_data;
639 int rc = 0;
640
641
642 memset(&init_data, 0, sizeof(init_data));
643 init_data.cid = qed_spq_get_cid(p_hwfn);
644 init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
645 init_data.comp_mode = comp_mode;
646 init_data.p_comp_data = p_comp_addr;
647
648 rc = qed_sp_init_request(p_hwfn, &p_ent,
649 ISCSI_RAMROD_CMD_ID_DESTROY_FUNC,
650 PROTOCOLID_ISCSI, &init_data);
651 if (rc)
652 return rc;
653
654 p_ramrod = &p_ent->ramrod.iscsi_destroy;
655 p_ramrod->hdr.op_code = ISCSI_RAMROD_CMD_ID_DESTROY_FUNC;
656
657 rc = qed_spq_post(p_hwfn, p_ent, NULL);
658
659 qed_spq_unregister_async_cb(p_hwfn, PROTOCOLID_ISCSI);
660 return rc;
661}
662
663static void __iomem *qed_iscsi_get_db_addr(struct qed_hwfn *p_hwfn, u32 cid)
664{
665 return (u8 __iomem *)p_hwfn->doorbells +
666 qed_db_addr(cid, DQ_DEMS_LEGACY);
667}
668
669static void __iomem *qed_iscsi_get_primary_bdq_prod(struct qed_hwfn *p_hwfn,
670 u8 bdq_id)
671{
672 if (RESC_NUM(p_hwfn, QED_BDQ)) {
673 return (u8 __iomem *)p_hwfn->regview +
674 GTT_BAR0_MAP_REG_MSDM_RAM +
675 MSTORM_SCSI_BDQ_EXT_PROD_OFFSET(RESC_START(p_hwfn,
676 QED_BDQ),
677 bdq_id);
678 } else {
679 DP_NOTICE(p_hwfn, "BDQ is not allocated!\n");
680 return NULL;
681 }
682}
683
684static void __iomem *qed_iscsi_get_secondary_bdq_prod(struct qed_hwfn *p_hwfn,
685 u8 bdq_id)
686{
687 if (RESC_NUM(p_hwfn, QED_BDQ)) {
688 return (u8 __iomem *)p_hwfn->regview +
689 GTT_BAR0_MAP_REG_TSDM_RAM +
690 TSTORM_SCSI_BDQ_EXT_PROD_OFFSET(RESC_START(p_hwfn,
691 QED_BDQ),
692 bdq_id);
693 } else {
694 DP_NOTICE(p_hwfn, "BDQ is not allocated!\n");
695 return NULL;
696 }
697}
698
699static int qed_iscsi_setup_connection(struct qed_iscsi_conn *p_conn)
700{
701 if (!p_conn->queue_cnts_virt_addr)
702 goto nomem;
703 memset(p_conn->queue_cnts_virt_addr, 0,
704 sizeof(*p_conn->queue_cnts_virt_addr));
705
706 if (!p_conn->tcp_upload_params_virt_addr)
707 goto nomem;
708 memset(p_conn->tcp_upload_params_virt_addr, 0,
709 sizeof(*p_conn->tcp_upload_params_virt_addr));
710
711 if (!p_conn->r2tq.p_virt_addr)
712 goto nomem;
713 qed_chain_pbl_zero_mem(&p_conn->r2tq);
714
715 if (!p_conn->uhq.p_virt_addr)
716 goto nomem;
717 qed_chain_pbl_zero_mem(&p_conn->uhq);
718
719 if (!p_conn->xhq.p_virt_addr)
720 goto nomem;
721 qed_chain_pbl_zero_mem(&p_conn->xhq);
722
723 return 0;
724nomem:
725 return -ENOMEM;
726}
727
728static int qed_iscsi_allocate_connection(struct qed_hwfn *p_hwfn,
729 struct qed_iscsi_conn **p_out_conn)
730{
731 u16 uhq_num_elements = 0, xhq_num_elements = 0, r2tq_num_elements = 0;
732 struct scsi_terminate_extra_params *p_q_cnts = NULL;
733 struct qed_iscsi_pf_params *p_params = NULL;
734 struct tcp_upload_params *p_tcp = NULL;
735 struct qed_iscsi_conn *p_conn = NULL;
736 int rc = 0;
737
738
739 spin_lock_bh(&p_hwfn->p_iscsi_info->lock);
740 if (!list_empty(&p_hwfn->p_iscsi_info->free_list))
741 p_conn = list_first_entry(&p_hwfn->p_iscsi_info->free_list,
742 struct qed_iscsi_conn, list_entry);
743 if (p_conn) {
744 list_del(&p_conn->list_entry);
745 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock);
746 *p_out_conn = p_conn;
747 return 0;
748 }
749 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock);
750
751
752 p_params = &p_hwfn->pf_params.iscsi_pf_params;
753
754 p_conn = kzalloc(sizeof(*p_conn), GFP_KERNEL);
755 if (!p_conn)
756 return -ENOMEM;
757
758 p_q_cnts = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev,
759 sizeof(*p_q_cnts),
760 &p_conn->queue_cnts_phys_addr,
761 GFP_KERNEL);
762 if (!p_q_cnts)
763 goto nomem_queue_cnts_param;
764 p_conn->queue_cnts_virt_addr = p_q_cnts;
765
766 p_tcp = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev,
767 sizeof(*p_tcp),
768 &p_conn->tcp_upload_params_phys_addr,
769 GFP_KERNEL);
770 if (!p_tcp)
771 goto nomem_upload_param;
772 p_conn->tcp_upload_params_virt_addr = p_tcp;
773
774 r2tq_num_elements = p_params->num_r2tq_pages_in_ring *
775 QED_CHAIN_PAGE_SIZE / 0x80;
776 rc = qed_chain_alloc(p_hwfn->cdev,
777 QED_CHAIN_USE_TO_CONSUME_PRODUCE,
778 QED_CHAIN_MODE_PBL,
779 QED_CHAIN_CNT_TYPE_U16,
780 r2tq_num_elements, 0x80, &p_conn->r2tq, NULL);
781 if (rc)
782 goto nomem_r2tq;
783
784 uhq_num_elements = p_params->num_uhq_pages_in_ring *
785 QED_CHAIN_PAGE_SIZE / sizeof(struct iscsi_uhqe);
786 rc = qed_chain_alloc(p_hwfn->cdev,
787 QED_CHAIN_USE_TO_CONSUME_PRODUCE,
788 QED_CHAIN_MODE_PBL,
789 QED_CHAIN_CNT_TYPE_U16,
790 uhq_num_elements,
791 sizeof(struct iscsi_uhqe), &p_conn->uhq, NULL);
792 if (rc)
793 goto nomem_uhq;
794
795 xhq_num_elements = uhq_num_elements;
796 rc = qed_chain_alloc(p_hwfn->cdev,
797 QED_CHAIN_USE_TO_CONSUME_PRODUCE,
798 QED_CHAIN_MODE_PBL,
799 QED_CHAIN_CNT_TYPE_U16,
800 xhq_num_elements,
801 sizeof(struct iscsi_xhqe), &p_conn->xhq, NULL);
802 if (rc)
803 goto nomem;
804
805 p_conn->free_on_delete = true;
806 *p_out_conn = p_conn;
807 return 0;
808
809nomem:
810 qed_chain_free(p_hwfn->cdev, &p_conn->uhq);
811nomem_uhq:
812 qed_chain_free(p_hwfn->cdev, &p_conn->r2tq);
813nomem_r2tq:
814 dma_free_coherent(&p_hwfn->cdev->pdev->dev,
815 sizeof(struct tcp_upload_params),
816 p_conn->tcp_upload_params_virt_addr,
817 p_conn->tcp_upload_params_phys_addr);
818nomem_upload_param:
819 dma_free_coherent(&p_hwfn->cdev->pdev->dev,
820 sizeof(struct scsi_terminate_extra_params),
821 p_conn->queue_cnts_virt_addr,
822 p_conn->queue_cnts_phys_addr);
823nomem_queue_cnts_param:
824 kfree(p_conn);
825
826 return -ENOMEM;
827}
828
829static int qed_iscsi_acquire_connection(struct qed_hwfn *p_hwfn,
830 struct qed_iscsi_conn *p_in_conn,
831 struct qed_iscsi_conn **p_out_conn)
832{
833 struct qed_iscsi_conn *p_conn = NULL;
834 int rc = 0;
835 u32 icid;
836
837 spin_lock_bh(&p_hwfn->p_iscsi_info->lock);
838 rc = qed_cxt_acquire_cid(p_hwfn, PROTOCOLID_ISCSI, &icid);
839 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock);
840 if (rc)
841 return rc;
842
843
844 if (p_in_conn)
845 p_conn = p_in_conn;
846 else
847 rc = qed_iscsi_allocate_connection(p_hwfn, &p_conn);
848
849 if (!rc)
850 rc = qed_iscsi_setup_connection(p_conn);
851
852 if (rc) {
853 spin_lock_bh(&p_hwfn->p_iscsi_info->lock);
854 qed_cxt_release_cid(p_hwfn, icid);
855 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock);
856 return rc;
857 }
858
859 p_conn->icid = icid;
860 p_conn->conn_id = (u16)icid;
861 p_conn->fw_cid = (p_hwfn->hw_info.opaque_fid << 16) | icid;
862
863 *p_out_conn = p_conn;
864
865 return rc;
866}
867
868static void qed_iscsi_release_connection(struct qed_hwfn *p_hwfn,
869 struct qed_iscsi_conn *p_conn)
870{
871 spin_lock_bh(&p_hwfn->p_iscsi_info->lock);
872 list_add_tail(&p_conn->list_entry, &p_hwfn->p_iscsi_info->free_list);
873 qed_cxt_release_cid(p_hwfn, p_conn->icid);
874 spin_unlock_bh(&p_hwfn->p_iscsi_info->lock);
875}
876
877static void qed_iscsi_free_connection(struct qed_hwfn *p_hwfn,
878 struct qed_iscsi_conn *p_conn)
879{
880 qed_chain_free(p_hwfn->cdev, &p_conn->xhq);
881 qed_chain_free(p_hwfn->cdev, &p_conn->uhq);
882 qed_chain_free(p_hwfn->cdev, &p_conn->r2tq);
883 dma_free_coherent(&p_hwfn->cdev->pdev->dev,
884 sizeof(struct tcp_upload_params),
885 p_conn->tcp_upload_params_virt_addr,
886 p_conn->tcp_upload_params_phys_addr);
887 dma_free_coherent(&p_hwfn->cdev->pdev->dev,
888 sizeof(struct scsi_terminate_extra_params),
889 p_conn->queue_cnts_virt_addr,
890 p_conn->queue_cnts_phys_addr);
891 kfree(p_conn);
892}
893
894int qed_iscsi_alloc(struct qed_hwfn *p_hwfn)
895{
896 struct qed_iscsi_info *p_iscsi_info;
897
898 p_iscsi_info = kzalloc(sizeof(*p_iscsi_info), GFP_KERNEL);
899 if (!p_iscsi_info)
900 return -ENOMEM;
901
902 INIT_LIST_HEAD(&p_iscsi_info->free_list);
903
904 p_hwfn->p_iscsi_info = p_iscsi_info;
905 return 0;
906}
907
908void qed_iscsi_setup(struct qed_hwfn *p_hwfn)
909{
910 spin_lock_init(&p_hwfn->p_iscsi_info->lock);
911}
912
913void qed_iscsi_free(struct qed_hwfn *p_hwfn)
914{
915 struct qed_iscsi_conn *p_conn = NULL;
916
917 if (!p_hwfn->p_iscsi_info)
918 return;
919
920 while (!list_empty(&p_hwfn->p_iscsi_info->free_list)) {
921 p_conn = list_first_entry(&p_hwfn->p_iscsi_info->free_list,
922 struct qed_iscsi_conn, list_entry);
923 if (p_conn) {
924 list_del(&p_conn->list_entry);
925 qed_iscsi_free_connection(p_hwfn, p_conn);
926 }
927 }
928
929 kfree(p_hwfn->p_iscsi_info);
930 p_hwfn->p_iscsi_info = NULL;
931}
932
933static void _qed_iscsi_get_tstats(struct qed_hwfn *p_hwfn,
934 struct qed_ptt *p_ptt,
935 struct qed_iscsi_stats *p_stats)
936{
937 struct tstorm_iscsi_stats_drv tstats;
938 u32 tstats_addr;
939
940 memset(&tstats, 0, sizeof(tstats));
941 tstats_addr = BAR0_MAP_REG_TSDM_RAM +
942 TSTORM_ISCSI_RX_STATS_OFFSET(p_hwfn->rel_pf_id);
943 qed_memcpy_from(p_hwfn, p_ptt, &tstats, tstats_addr, sizeof(tstats));
944
945 p_stats->iscsi_rx_bytes_cnt =
946 HILO_64_REGPAIR(tstats.iscsi_rx_bytes_cnt);
947 p_stats->iscsi_rx_packet_cnt =
948 HILO_64_REGPAIR(tstats.iscsi_rx_packet_cnt);
949 p_stats->iscsi_rx_new_ooo_isle_events_cnt =
950 HILO_64_REGPAIR(tstats.iscsi_rx_new_ooo_isle_events_cnt);
951 p_stats->iscsi_cmdq_threshold_cnt =
952 le32_to_cpu(tstats.iscsi_cmdq_threshold_cnt);
953 p_stats->iscsi_rq_threshold_cnt =
954 le32_to_cpu(tstats.iscsi_rq_threshold_cnt);
955 p_stats->iscsi_immq_threshold_cnt =
956 le32_to_cpu(tstats.iscsi_immq_threshold_cnt);
957}
958
959static void _qed_iscsi_get_mstats(struct qed_hwfn *p_hwfn,
960 struct qed_ptt *p_ptt,
961 struct qed_iscsi_stats *p_stats)
962{
963 struct mstorm_iscsi_stats_drv mstats;
964 u32 mstats_addr;
965
966 memset(&mstats, 0, sizeof(mstats));
967 mstats_addr = BAR0_MAP_REG_MSDM_RAM +
968 MSTORM_ISCSI_RX_STATS_OFFSET(p_hwfn->rel_pf_id);
969 qed_memcpy_from(p_hwfn, p_ptt, &mstats, mstats_addr, sizeof(mstats));
970
971 p_stats->iscsi_rx_dropped_pdus_task_not_valid =
972 HILO_64_REGPAIR(mstats.iscsi_rx_dropped_pdus_task_not_valid);
973}
974
975static void _qed_iscsi_get_ustats(struct qed_hwfn *p_hwfn,
976 struct qed_ptt *p_ptt,
977 struct qed_iscsi_stats *p_stats)
978{
979 struct ustorm_iscsi_stats_drv ustats;
980 u32 ustats_addr;
981
982 memset(&ustats, 0, sizeof(ustats));
983 ustats_addr = BAR0_MAP_REG_USDM_RAM +
984 USTORM_ISCSI_RX_STATS_OFFSET(p_hwfn->rel_pf_id);
985 qed_memcpy_from(p_hwfn, p_ptt, &ustats, ustats_addr, sizeof(ustats));
986
987 p_stats->iscsi_rx_data_pdu_cnt =
988 HILO_64_REGPAIR(ustats.iscsi_rx_data_pdu_cnt);
989 p_stats->iscsi_rx_r2t_pdu_cnt =
990 HILO_64_REGPAIR(ustats.iscsi_rx_r2t_pdu_cnt);
991 p_stats->iscsi_rx_total_pdu_cnt =
992 HILO_64_REGPAIR(ustats.iscsi_rx_total_pdu_cnt);
993}
994
995static void _qed_iscsi_get_xstats(struct qed_hwfn *p_hwfn,
996 struct qed_ptt *p_ptt,
997 struct qed_iscsi_stats *p_stats)
998{
999 struct xstorm_iscsi_stats_drv xstats;
1000 u32 xstats_addr;
1001
1002 memset(&xstats, 0, sizeof(xstats));
1003 xstats_addr = BAR0_MAP_REG_XSDM_RAM +
1004 XSTORM_ISCSI_TX_STATS_OFFSET(p_hwfn->rel_pf_id);
1005 qed_memcpy_from(p_hwfn, p_ptt, &xstats, xstats_addr, sizeof(xstats));
1006
1007 p_stats->iscsi_tx_go_to_slow_start_event_cnt =
1008 HILO_64_REGPAIR(xstats.iscsi_tx_go_to_slow_start_event_cnt);
1009 p_stats->iscsi_tx_fast_retransmit_event_cnt =
1010 HILO_64_REGPAIR(xstats.iscsi_tx_fast_retransmit_event_cnt);
1011}
1012
1013static void _qed_iscsi_get_ystats(struct qed_hwfn *p_hwfn,
1014 struct qed_ptt *p_ptt,
1015 struct qed_iscsi_stats *p_stats)
1016{
1017 struct ystorm_iscsi_stats_drv ystats;
1018 u32 ystats_addr;
1019
1020 memset(&ystats, 0, sizeof(ystats));
1021 ystats_addr = BAR0_MAP_REG_YSDM_RAM +
1022 YSTORM_ISCSI_TX_STATS_OFFSET(p_hwfn->rel_pf_id);
1023 qed_memcpy_from(p_hwfn, p_ptt, &ystats, ystats_addr, sizeof(ystats));
1024
1025 p_stats->iscsi_tx_data_pdu_cnt =
1026 HILO_64_REGPAIR(ystats.iscsi_tx_data_pdu_cnt);
1027 p_stats->iscsi_tx_r2t_pdu_cnt =
1028 HILO_64_REGPAIR(ystats.iscsi_tx_r2t_pdu_cnt);
1029 p_stats->iscsi_tx_total_pdu_cnt =
1030 HILO_64_REGPAIR(ystats.iscsi_tx_total_pdu_cnt);
1031}
1032
1033static void _qed_iscsi_get_pstats(struct qed_hwfn *p_hwfn,
1034 struct qed_ptt *p_ptt,
1035 struct qed_iscsi_stats *p_stats)
1036{
1037 struct pstorm_iscsi_stats_drv pstats;
1038 u32 pstats_addr;
1039
1040 memset(&pstats, 0, sizeof(pstats));
1041 pstats_addr = BAR0_MAP_REG_PSDM_RAM +
1042 PSTORM_ISCSI_TX_STATS_OFFSET(p_hwfn->rel_pf_id);
1043 qed_memcpy_from(p_hwfn, p_ptt, &pstats, pstats_addr, sizeof(pstats));
1044
1045 p_stats->iscsi_tx_bytes_cnt =
1046 HILO_64_REGPAIR(pstats.iscsi_tx_bytes_cnt);
1047 p_stats->iscsi_tx_packet_cnt =
1048 HILO_64_REGPAIR(pstats.iscsi_tx_packet_cnt);
1049}
1050
1051static int qed_iscsi_get_stats(struct qed_hwfn *p_hwfn,
1052 struct qed_iscsi_stats *stats)
1053{
1054 struct qed_ptt *p_ptt;
1055
1056 memset(stats, 0, sizeof(*stats));
1057
1058 p_ptt = qed_ptt_acquire(p_hwfn);
1059 if (!p_ptt) {
1060 DP_ERR(p_hwfn, "Failed to acquire ptt\n");
1061 return -EAGAIN;
1062 }
1063
1064 _qed_iscsi_get_tstats(p_hwfn, p_ptt, stats);
1065 _qed_iscsi_get_mstats(p_hwfn, p_ptt, stats);
1066 _qed_iscsi_get_ustats(p_hwfn, p_ptt, stats);
1067
1068 _qed_iscsi_get_xstats(p_hwfn, p_ptt, stats);
1069 _qed_iscsi_get_ystats(p_hwfn, p_ptt, stats);
1070 _qed_iscsi_get_pstats(p_hwfn, p_ptt, stats);
1071
1072 qed_ptt_release(p_hwfn, p_ptt);
1073
1074 return 0;
1075}
1076
1077struct qed_hash_iscsi_con {
1078 struct hlist_node node;
1079 struct qed_iscsi_conn *con;
1080};
1081
1082static int qed_fill_iscsi_dev_info(struct qed_dev *cdev,
1083 struct qed_dev_iscsi_info *info)
1084{
1085 struct qed_hwfn *hwfn = QED_LEADING_HWFN(cdev);
1086
1087 int rc;
1088
1089 memset(info, 0, sizeof(*info));
1090 rc = qed_fill_dev_info(cdev, &info->common);
1091
1092 info->primary_dbq_rq_addr =
1093 qed_iscsi_get_primary_bdq_prod(hwfn, BDQ_ID_RQ);
1094 info->secondary_bdq_rq_addr =
1095 qed_iscsi_get_secondary_bdq_prod(hwfn, BDQ_ID_RQ);
1096
1097 info->num_cqs = FEAT_NUM(hwfn, QED_ISCSI_CQ);
1098
1099 return rc;
1100}
1101
1102static void qed_register_iscsi_ops(struct qed_dev *cdev,
1103 struct qed_iscsi_cb_ops *ops, void *cookie)
1104{
1105 cdev->protocol_ops.iscsi = ops;
1106 cdev->ops_cookie = cookie;
1107}
1108
1109static struct qed_hash_iscsi_con *qed_iscsi_get_hash(struct qed_dev *cdev,
1110 u32 handle)
1111{
1112 struct qed_hash_iscsi_con *hash_con = NULL;
1113
1114 if (!(cdev->flags & QED_FLAG_STORAGE_STARTED))
1115 return NULL;
1116
1117 hash_for_each_possible(cdev->connections, hash_con, node, handle) {
1118 if (hash_con->con->icid == handle)
1119 break;
1120 }
1121
1122 if (!hash_con || (hash_con->con->icid != handle))
1123 return NULL;
1124
1125 return hash_con;
1126}
1127
1128static int qed_iscsi_stop(struct qed_dev *cdev)
1129{
1130 int rc;
1131
1132 if (!(cdev->flags & QED_FLAG_STORAGE_STARTED)) {
1133 DP_NOTICE(cdev, "iscsi already stopped\n");
1134 return 0;
1135 }
1136
1137 if (!hash_empty(cdev->connections)) {
1138 DP_NOTICE(cdev,
1139 "Can't stop iscsi - not all connections were returned\n");
1140 return -EINVAL;
1141 }
1142
1143
1144 rc = qed_sp_iscsi_func_stop(QED_LEADING_HWFN(cdev),
1145 QED_SPQ_MODE_EBLOCK, NULL);
1146 cdev->flags &= ~QED_FLAG_STORAGE_STARTED;
1147
1148 return rc;
1149}
1150
1151static int qed_iscsi_start(struct qed_dev *cdev,
1152 struct qed_iscsi_tid *tasks,
1153 void *event_context,
1154 iscsi_event_cb_t async_event_cb)
1155{
1156 int rc;
1157 struct qed_tid_mem *tid_info;
1158
1159 if (cdev->flags & QED_FLAG_STORAGE_STARTED) {
1160 DP_NOTICE(cdev, "iscsi already started;\n");
1161 return 0;
1162 }
1163
1164 rc = qed_sp_iscsi_func_start(QED_LEADING_HWFN(cdev),
1165 QED_SPQ_MODE_EBLOCK, NULL, event_context,
1166 async_event_cb);
1167 if (rc) {
1168 DP_NOTICE(cdev, "Failed to start iscsi\n");
1169 return rc;
1170 }
1171
1172 cdev->flags |= QED_FLAG_STORAGE_STARTED;
1173 hash_init(cdev->connections);
1174
1175 if (!tasks)
1176 return 0;
1177
1178 tid_info = kzalloc(sizeof(*tid_info), GFP_KERNEL);
1179
1180 if (!tid_info) {
1181 qed_iscsi_stop(cdev);
1182 return -ENOMEM;
1183 }
1184
1185 rc = qed_cxt_get_tid_mem_info(QED_LEADING_HWFN(cdev),
1186 tid_info);
1187 if (rc) {
1188 DP_NOTICE(cdev, "Failed to gather task information\n");
1189 qed_iscsi_stop(cdev);
1190 kfree(tid_info);
1191 return rc;
1192 }
1193
1194
1195 tasks->size = tid_info->tid_size;
1196 tasks->num_tids_per_block = tid_info->num_tids_per_block;
1197 memcpy(tasks->blocks, tid_info->blocks,
1198 MAX_TID_BLOCKS_ISCSI * sizeof(u8 *));
1199
1200 kfree(tid_info);
1201
1202 return 0;
1203}
1204
1205static int qed_iscsi_acquire_conn(struct qed_dev *cdev,
1206 u32 *handle,
1207 u32 *fw_cid, void __iomem **p_doorbell)
1208{
1209 struct qed_hash_iscsi_con *hash_con;
1210 int rc;
1211
1212
1213 hash_con = kzalloc(sizeof(*hash_con), GFP_ATOMIC);
1214 if (!hash_con)
1215 return -ENOMEM;
1216
1217
1218 rc = qed_iscsi_acquire_connection(QED_LEADING_HWFN(cdev), NULL,
1219 &hash_con->con);
1220 if (rc) {
1221 DP_NOTICE(cdev, "Failed to acquire Connection\n");
1222 kfree(hash_con);
1223 return rc;
1224 }
1225
1226
1227 *handle = hash_con->con->icid;
1228 *fw_cid = hash_con->con->fw_cid;
1229 hash_add(cdev->connections, &hash_con->node, *handle);
1230
1231 if (p_doorbell)
1232 *p_doorbell = qed_iscsi_get_db_addr(QED_LEADING_HWFN(cdev),
1233 *handle);
1234
1235 return 0;
1236}
1237
1238static int qed_iscsi_release_conn(struct qed_dev *cdev, u32 handle)
1239{
1240 struct qed_hash_iscsi_con *hash_con;
1241
1242 hash_con = qed_iscsi_get_hash(cdev, handle);
1243 if (!hash_con) {
1244 DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
1245 handle);
1246 return -EINVAL;
1247 }
1248
1249 hlist_del(&hash_con->node);
1250 qed_iscsi_release_connection(QED_LEADING_HWFN(cdev), hash_con->con);
1251 kfree(hash_con);
1252
1253 return 0;
1254}
1255
1256static int qed_iscsi_offload_conn(struct qed_dev *cdev,
1257 u32 handle,
1258 struct qed_iscsi_params_offload *conn_info)
1259{
1260 struct qed_hash_iscsi_con *hash_con;
1261 struct qed_iscsi_conn *con;
1262
1263 hash_con = qed_iscsi_get_hash(cdev, handle);
1264 if (!hash_con) {
1265 DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
1266 handle);
1267 return -EINVAL;
1268 }
1269
1270
1271 con = hash_con->con;
1272
1273 ether_addr_copy(con->local_mac, conn_info->src.mac);
1274 ether_addr_copy(con->remote_mac, conn_info->dst.mac);
1275 memcpy(con->local_ip, conn_info->src.ip, sizeof(con->local_ip));
1276 memcpy(con->remote_ip, conn_info->dst.ip, sizeof(con->remote_ip));
1277 con->local_port = conn_info->src.port;
1278 con->remote_port = conn_info->dst.port;
1279
1280 con->layer_code = conn_info->layer_code;
1281 con->sq_pbl_addr = conn_info->sq_pbl_addr;
1282 con->initial_ack = conn_info->initial_ack;
1283 con->vlan_id = conn_info->vlan_id;
1284 con->tcp_flags = conn_info->tcp_flags;
1285 con->ip_version = conn_info->ip_version;
1286 con->default_cq = conn_info->default_cq;
1287 con->ka_max_probe_cnt = conn_info->ka_max_probe_cnt;
1288 con->dup_ack_theshold = conn_info->dup_ack_theshold;
1289 con->rcv_next = conn_info->rcv_next;
1290 con->snd_una = conn_info->snd_una;
1291 con->snd_next = conn_info->snd_next;
1292 con->snd_max = conn_info->snd_max;
1293 con->snd_wnd = conn_info->snd_wnd;
1294 con->rcv_wnd = conn_info->rcv_wnd;
1295 con->snd_wl1 = conn_info->snd_wl1;
1296 con->cwnd = conn_info->cwnd;
1297 con->ss_thresh = conn_info->ss_thresh;
1298 con->srtt = conn_info->srtt;
1299 con->rtt_var = conn_info->rtt_var;
1300 con->ts_recent = conn_info->ts_recent;
1301 con->ts_recent_age = conn_info->ts_recent_age;
1302 con->total_rt = conn_info->total_rt;
1303 con->ka_timeout_delta = conn_info->ka_timeout_delta;
1304 con->rt_timeout_delta = conn_info->rt_timeout_delta;
1305 con->dup_ack_cnt = conn_info->dup_ack_cnt;
1306 con->snd_wnd_probe_cnt = conn_info->snd_wnd_probe_cnt;
1307 con->ka_probe_cnt = conn_info->ka_probe_cnt;
1308 con->rt_cnt = conn_info->rt_cnt;
1309 con->flow_label = conn_info->flow_label;
1310 con->ka_timeout = conn_info->ka_timeout;
1311 con->ka_interval = conn_info->ka_interval;
1312 con->max_rt_time = conn_info->max_rt_time;
1313 con->initial_rcv_wnd = conn_info->initial_rcv_wnd;
1314 con->ttl = conn_info->ttl;
1315 con->tos_or_tc = conn_info->tos_or_tc;
1316 con->remote_port = conn_info->remote_port;
1317 con->local_port = conn_info->local_port;
1318 con->mss = conn_info->mss;
1319 con->snd_wnd_scale = conn_info->snd_wnd_scale;
1320 con->rcv_wnd_scale = conn_info->rcv_wnd_scale;
1321 con->da_timeout_value = conn_info->da_timeout_value;
1322 con->ack_frequency = conn_info->ack_frequency;
1323
1324
1325 con->offl_flags = 0x1;
1326
1327 return qed_sp_iscsi_conn_offload(QED_LEADING_HWFN(cdev), con,
1328 QED_SPQ_MODE_EBLOCK, NULL);
1329}
1330
1331static int qed_iscsi_update_conn(struct qed_dev *cdev,
1332 u32 handle,
1333 struct qed_iscsi_params_update *conn_info)
1334{
1335 struct qed_hash_iscsi_con *hash_con;
1336 struct qed_iscsi_conn *con;
1337
1338 hash_con = qed_iscsi_get_hash(cdev, handle);
1339 if (!hash_con) {
1340 DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
1341 handle);
1342 return -EINVAL;
1343 }
1344
1345
1346 con = hash_con->con;
1347 con->update_flag = conn_info->update_flag;
1348 con->max_seq_size = conn_info->max_seq_size;
1349 con->max_recv_pdu_length = conn_info->max_recv_pdu_length;
1350 con->max_send_pdu_length = conn_info->max_send_pdu_length;
1351 con->first_seq_length = conn_info->first_seq_length;
1352 con->exp_stat_sn = conn_info->exp_stat_sn;
1353
1354 return qed_sp_iscsi_conn_update(QED_LEADING_HWFN(cdev), con,
1355 QED_SPQ_MODE_EBLOCK, NULL);
1356}
1357
1358static int qed_iscsi_clear_conn_sq(struct qed_dev *cdev, u32 handle)
1359{
1360 struct qed_hash_iscsi_con *hash_con;
1361
1362 hash_con = qed_iscsi_get_hash(cdev, handle);
1363 if (!hash_con) {
1364 DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
1365 handle);
1366 return -EINVAL;
1367 }
1368
1369 return qed_sp_iscsi_conn_clear_sq(QED_LEADING_HWFN(cdev),
1370 hash_con->con,
1371 QED_SPQ_MODE_EBLOCK, NULL);
1372}
1373
1374static int qed_iscsi_destroy_conn(struct qed_dev *cdev,
1375 u32 handle, u8 abrt_conn)
1376{
1377 struct qed_hash_iscsi_con *hash_con;
1378
1379 hash_con = qed_iscsi_get_hash(cdev, handle);
1380 if (!hash_con) {
1381 DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
1382 handle);
1383 return -EINVAL;
1384 }
1385
1386 hash_con->con->abortive_dsconnect = abrt_conn;
1387
1388 return qed_sp_iscsi_conn_terminate(QED_LEADING_HWFN(cdev),
1389 hash_con->con,
1390 QED_SPQ_MODE_EBLOCK, NULL);
1391}
1392
1393static int qed_iscsi_stats(struct qed_dev *cdev, struct qed_iscsi_stats *stats)
1394{
1395 return qed_iscsi_get_stats(QED_LEADING_HWFN(cdev), stats);
1396}
1397
1398static int qed_iscsi_change_mac(struct qed_dev *cdev,
1399 u32 handle, const u8 *mac)
1400{
1401 struct qed_hash_iscsi_con *hash_con;
1402
1403 hash_con = qed_iscsi_get_hash(cdev, handle);
1404 if (!hash_con) {
1405 DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
1406 handle);
1407 return -EINVAL;
1408 }
1409
1410 return qed_sp_iscsi_mac_update(QED_LEADING_HWFN(cdev),
1411 hash_con->con,
1412 QED_SPQ_MODE_EBLOCK, NULL);
1413}
1414
1415void qed_get_protocol_stats_iscsi(struct qed_dev *cdev,
1416 struct qed_mcp_iscsi_stats *stats)
1417{
1418 struct qed_iscsi_stats proto_stats;
1419
1420
1421 memset(&proto_stats, 0, sizeof(proto_stats));
1422 if (qed_iscsi_stats(cdev, &proto_stats)) {
1423 DP_VERBOSE(cdev, QED_MSG_STORAGE,
1424 "Failed to collect ISCSI statistics\n");
1425 return;
1426 }
1427
1428
1429 stats->rx_pdus = proto_stats.iscsi_rx_total_pdu_cnt;
1430 stats->tx_pdus = proto_stats.iscsi_tx_total_pdu_cnt;
1431 stats->rx_bytes = proto_stats.iscsi_rx_bytes_cnt;
1432 stats->tx_bytes = proto_stats.iscsi_tx_bytes_cnt;
1433}
1434
1435static const struct qed_iscsi_ops qed_iscsi_ops_pass = {
1436 .common = &qed_common_ops_pass,
1437 .ll2 = &qed_ll2_ops_pass,
1438 .fill_dev_info = &qed_fill_iscsi_dev_info,
1439 .register_ops = &qed_register_iscsi_ops,
1440 .start = &qed_iscsi_start,
1441 .stop = &qed_iscsi_stop,
1442 .acquire_conn = &qed_iscsi_acquire_conn,
1443 .release_conn = &qed_iscsi_release_conn,
1444 .offload_conn = &qed_iscsi_offload_conn,
1445 .update_conn = &qed_iscsi_update_conn,
1446 .destroy_conn = &qed_iscsi_destroy_conn,
1447 .clear_sq = &qed_iscsi_clear_conn_sq,
1448 .get_stats = &qed_iscsi_stats,
1449 .change_mac = &qed_iscsi_change_mac,
1450};
1451
1452const struct qed_iscsi_ops *qed_get_iscsi_ops(void)
1453{
1454 return &qed_iscsi_ops_pass;
1455}
1456EXPORT_SYMBOL(qed_get_iscsi_ops);
1457
1458void qed_put_iscsi_ops(void)
1459{
1460}
1461EXPORT_SYMBOL(qed_put_iscsi_ops);
1462
