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[SCSI] be2iscsi: Issue MBX Cmd for login to boot target in crashdump mode
[linux-2.6-block.git] / drivers / scsi / be2iscsi / be_mgmt.c
CommitLineData
6733b39a 1/**
255fa9a3 2 * Copyright (C) 2005 - 2011 Emulex
6733b39a
JK		 3 * All rights reserved.
4 *
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License version 2
7 * as published by the Free Software Foundation. The full GNU General
8 * Public License is included in this distribution in the file called COPYING.
9 *
255fa9a3 10 * Written by: Jayamohan Kallickal (jayamohan.kallickal@emulex.com)
6733b39a
JK		 11 *
12 * Contact Information:
255fa9a3 13 * linux-drivers@emulex.com
6733b39a 14 *
255fa9a3
JK		 15 * Emulex
16 * 3333 Susan Street
17 * Costa Mesa, CA 92626
6733b39a
JK		 18 */
19
ffce3e2e
JK		 20#include <linux/bsg-lib.h>
21#include <scsi/scsi_transport_iscsi.h>
22#include <scsi/scsi_bsg_iscsi.h>
6733b39a
JK		 23#include "be_mgmt.h"
24#include "be_iscsi.h"
c7acc5b8 25
9aef4200
JSJ		 26/**
27 * mgmt_reopen_session()- Reopen a session based on reopen_type
28 * @phba: Device priv structure instance
29 * @reopen_type: Type of reopen_session FW should do.
30 * @sess_handle: Session Handle of the session to be re-opened
31 *
32 * return
33 * the TAG used for MBOX Command
34 *
35 **/
36unsigned int mgmt_reopen_session(struct beiscsi_hba *phba,
37 unsigned int reopen_type,
38 unsigned int sess_handle)
39{
40 struct be_ctrl_info *ctrl = &phba->ctrl;
41 struct be_mcc_wrb *wrb;
42 struct be_cmd_reopen_session_req *req;
43 unsigned int tag = 0;
44
45 SE_DEBUG(DBG_LVL_8, "In bescsi_get_boot_target\n");
46 spin_lock(&ctrl->mbox_lock);
47 tag = alloc_mcc_tag(phba);
48 if (!tag) {
49 spin_unlock(&ctrl->mbox_lock);
50 return tag;
51 }
52
53 wrb = wrb_from_mccq(phba);
54 req = embedded_payload(wrb);
55 wrb->tag0 |= tag;
56 be_wrb_hdr_prepare(wrb, sizeof(*req), true, 0);
57 be_cmd_hdr_prepare(&req->hdr, CMD_SUBSYSTEM_ISCSI_INI,
58 OPCODE_ISCSI_INI_DRIVER_REOPEN_ALL_SESSIONS,
59 sizeof(struct be_cmd_reopen_session_resp));
60
61 /* set the reopen_type,sess_handle */
62 req->reopen_type = reopen_type;
63 req->session_handle = sess_handle;
64
65 be_mcc_notify(phba);
66 spin_unlock(&ctrl->mbox_lock);
67 return tag;
68}
69
0e43895e 70unsigned int mgmt_get_boot_target(struct beiscsi_hba *phba)
c7acc5b8
JK		 71{
72 struct be_ctrl_info *ctrl = &phba->ctrl;
73 struct be_mcc_wrb *wrb;
0e43895e 74 struct be_cmd_get_boot_target_req *req;
c7acc5b8
JK		 75 unsigned int tag = 0;
76
77 SE_DEBUG(DBG_LVL_8, "In bescsi_get_boot_target\n");
78 spin_lock(&ctrl->mbox_lock);
79 tag = alloc_mcc_tag(phba);
80 if (!tag) {
81 spin_unlock(&ctrl->mbox_lock);
82 return tag;
83 }
84
85 wrb = wrb_from_mccq(phba);
86 req = embedded_payload(wrb);
87 wrb->tag0 |= tag;
88 be_wrb_hdr_prepare(wrb, sizeof(*req), true, 0);
89 be_cmd_hdr_prepare(&req->hdr, CMD_SUBSYSTEM_ISCSI_INI,
90 OPCODE_ISCSI_INI_BOOT_GET_BOOT_TARGET,
0e43895e 91 sizeof(struct be_cmd_get_boot_target_resp));
c7acc5b8
JK		 92
93 be_mcc_notify(phba);
94 spin_unlock(&ctrl->mbox_lock);
95 return tag;
96}
97
0e43895e
MC		 98unsigned int mgmt_get_session_info(struct beiscsi_hba *phba,
99 u32 boot_session_handle,
100 struct be_dma_mem *nonemb_cmd)
c7acc5b8
JK		 101{
102 struct be_ctrl_info *ctrl = &phba->ctrl;
103 struct be_mcc_wrb *wrb;
104 unsigned int tag = 0;
0e43895e
MC		 105 struct be_cmd_get_session_req *req;
106 struct be_cmd_get_session_resp *resp;
c7acc5b8
JK		 107 struct be_sge *sge;
108
109 SE_DEBUG(DBG_LVL_8, "In beiscsi_get_session_info\n");
110 spin_lock(&ctrl->mbox_lock);
111 tag = alloc_mcc_tag(phba);
112 if (!tag) {
113 spin_unlock(&ctrl->mbox_lock);
114 return tag;
115 }
116
117 nonemb_cmd->size = sizeof(*resp);
118 req = nonemb_cmd->va;
119 memset(req, 0, sizeof(*req));
120 wrb = wrb_from_mccq(phba);
121 sge = nonembedded_sgl(wrb);
122 wrb->tag0 |= tag;
123
124
125 wrb->tag0 |= tag;
126 be_wrb_hdr_prepare(wrb, sizeof(*req), false, 1);
127 be_cmd_hdr_prepare(&req->hdr, CMD_SUBSYSTEM_ISCSI_INI,
128 OPCODE_ISCSI_INI_SESSION_GET_A_SESSION,
129 sizeof(*resp));
130 req->session_handle = boot_session_handle;
131 sge->pa_hi = cpu_to_le32(upper_32_bits(nonemb_cmd->dma));
132 sge->pa_lo = cpu_to_le32(nonemb_cmd->dma & 0xFFFFFFFF);
133 sge->len = cpu_to_le32(nonemb_cmd->size);
134
135 be_mcc_notify(phba);
136 spin_unlock(&ctrl->mbox_lock);
137 return tag;
138}
6733b39a 139
03a12310 140int mgmt_get_fw_config(struct be_ctrl_info *ctrl,
6733b39a
JK		 141 struct beiscsi_hba *phba)
142{
143 struct be_mcc_wrb *wrb = wrb_from_mbox(&ctrl->mbox_mem);
144 struct be_fw_cfg *req = embedded_payload(wrb);
145 int status = 0;
146
147 spin_lock(&ctrl->mbox_lock);
148 memset(wrb, 0, sizeof(*wrb));
149
150 be_wrb_hdr_prepare(wrb, sizeof(*req), true, 0);
151
152 be_cmd_hdr_prepare(&req->hdr, CMD_SUBSYSTEM_COMMON,
153 OPCODE_COMMON_QUERY_FIRMWARE_CONFIG, sizeof(*req));
6733b39a
JK		 154 status = be_mbox_notify(ctrl);
155 if (!status) {
156 struct be_fw_cfg *pfw_cfg;
157 pfw_cfg = req;
158 phba->fw_config.phys_port = pfw_cfg->phys_port;
159 phba->fw_config.iscsi_icd_start =
160 pfw_cfg->ulp[0].icd_base;
161 phba->fw_config.iscsi_icd_count =
162 pfw_cfg->ulp[0].icd_count;
163 phba->fw_config.iscsi_cid_start =
164 pfw_cfg->ulp[0].sq_base;
165 phba->fw_config.iscsi_cid_count =
166 pfw_cfg->ulp[0].sq_count;
7da50879 167 if (phba->fw_config.iscsi_cid_count > (BE2_MAX_SESSIONS / 2)) {
a3babda5 168 SE_DEBUG(DBG_LVL_8,
3cbb7a74 169 "FW reported MAX CXNS as %d\t"
a3babda5
JK		 170 "Max Supported = %d.\n",
171 phba->fw_config.iscsi_cid_count,
172 BE2_MAX_SESSIONS);
173 phba->fw_config.iscsi_cid_count = BE2_MAX_SESSIONS / 2;
7da50879 174 }
6733b39a
JK		 175 } else {
176 shost_printk(KERN_WARNING, phba->shost,
457ff3b7 177 "Failed in mgmt_get_fw_config\n");
6733b39a
JK		 178 }
179
180 spin_unlock(&ctrl->mbox_lock);
181 return status;
182}
183
03a12310 184int mgmt_check_supported_fw(struct be_ctrl_info *ctrl,
bfead3b2 185 struct beiscsi_hba *phba)
6733b39a
JK		 186{
187 struct be_dma_mem nonemb_cmd;
188 struct be_mcc_wrb *wrb = wrb_from_mbox(&ctrl->mbox_mem);
189 struct be_mgmt_controller_attributes *req;
190 struct be_sge *sge = nonembedded_sgl(wrb);
191 int status = 0;
192
193 nonemb_cmd.va = pci_alloc_consistent(ctrl->pdev,
194 sizeof(struct be_mgmt_controller_attributes),
195 &nonemb_cmd.dma);
196 if (nonemb_cmd.va == NULL) {
197 SE_DEBUG(DBG_LVL_1,
198 "Failed to allocate memory for mgmt_check_supported_fw"
199 "\n");
d3ad2bb3 200 return -ENOMEM;
6733b39a
JK		 201 }
202 nonemb_cmd.size = sizeof(struct be_mgmt_controller_attributes);
203 req = nonemb_cmd.va;
f98c96b0 204 memset(req, 0, sizeof(*req));
6733b39a
JK		 205 spin_lock(&ctrl->mbox_lock);
206 memset(wrb, 0, sizeof(*wrb));
207 be_wrb_hdr_prepare(wrb, sizeof(*req), false, 1);
208 be_cmd_hdr_prepare(&req->hdr, CMD_SUBSYSTEM_COMMON,
209 OPCODE_COMMON_GET_CNTL_ATTRIBUTES, sizeof(*req));
210 sge->pa_hi = cpu_to_le32(upper_32_bits(nonemb_cmd.dma));
211 sge->pa_lo = cpu_to_le32(nonemb_cmd.dma & 0xFFFFFFFF);
212 sge->len = cpu_to_le32(nonemb_cmd.size);
6733b39a
JK		 213 status = be_mbox_notify(ctrl);
214 if (!status) {
215 struct be_mgmt_controller_attributes_resp *resp = nonemb_cmd.va;
216 SE_DEBUG(DBG_LVL_8, "Firmware version of CMD: %s\n",
217 resp->params.hba_attribs.flashrom_version_string);
218 SE_DEBUG(DBG_LVL_8, "Firmware version is : %s\n",
219 resp->params.hba_attribs.firmware_version_string);
220 SE_DEBUG(DBG_LVL_8,
221 "Developer Build, not performing version check...\n");
bfead3b2
JK		 222 phba->fw_config.iscsi_features =
223 resp->params.hba_attribs.iscsi_features;
224 SE_DEBUG(DBG_LVL_8, " phba->fw_config.iscsi_features = %d\n",
225 phba->fw_config.iscsi_features);
6733b39a
JK		 226 } else
227 SE_DEBUG(DBG_LVL_1, " Failed in mgmt_check_supported_fw\n");
bfead3b2 228 spin_unlock(&ctrl->mbox_lock);
6733b39a
JK		 229 if (nonemb_cmd.va)
230 pci_free_consistent(ctrl->pdev, nonemb_cmd.size,
231 nonemb_cmd.va, nonemb_cmd.dma);
232
6733b39a
JK		 233 return status;
234}
235
ffce3e2e
JK		 236unsigned int mgmt_vendor_specific_fw_cmd(struct be_ctrl_info *ctrl,
237 struct beiscsi_hba *phba,
238 struct bsg_job *job,
239 struct be_dma_mem *nonemb_cmd)
240{
241 struct be_cmd_resp_hdr *resp;
242 struct be_mcc_wrb *wrb = wrb_from_mccq(phba);
243 struct be_sge *mcc_sge = nonembedded_sgl(wrb);
244 unsigned int tag = 0;
245 struct iscsi_bsg_request *bsg_req = job->request;
246 struct be_bsg_vendor_cmd *req = nonemb_cmd->va;
247 unsigned short region, sector_size, sector, offset;
248
249 nonemb_cmd->size = job->request_payload.payload_len;
250 memset(nonemb_cmd->va, 0, nonemb_cmd->size);
251 resp = nonemb_cmd->va;
252 region = bsg_req->rqst_data.h_vendor.vendor_cmd[1];
253 sector_size = bsg_req->rqst_data.h_vendor.vendor_cmd[2];
254 sector = bsg_req->rqst_data.h_vendor.vendor_cmd[3];
255 offset = bsg_req->rqst_data.h_vendor.vendor_cmd[4];
256 req->region = region;
257 req->sector = sector;
258 req->offset = offset;
259 spin_lock(&ctrl->mbox_lock);
260 memset(wrb, 0, sizeof(*wrb));
261
262 switch (bsg_req->rqst_data.h_vendor.vendor_cmd[0]) {
263 case BEISCSI_WRITE_FLASH:
264 offset = sector * sector_size + offset;
265 be_cmd_hdr_prepare(&req->hdr, CMD_SUBSYSTEM_ISCSI,
266 OPCODE_COMMON_WRITE_FLASH, sizeof(*req));
267 sg_copy_to_buffer(job->request_payload.sg_list,
268 job->request_payload.sg_cnt,
269 nonemb_cmd->va + offset, job->request_len);
270 break;
271 case BEISCSI_READ_FLASH:
272 be_cmd_hdr_prepare(&req->hdr, CMD_SUBSYSTEM_ISCSI,
273 OPCODE_COMMON_READ_FLASH, sizeof(*req));
274 break;
275 default:
276 shost_printk(KERN_WARNING, phba->shost,
277 "Unsupported cmd = 0x%x\n\n", bsg_req->rqst_data.
278 h_vendor.vendor_cmd[0]);
279 spin_unlock(&ctrl->mbox_lock);
280 return -ENOSYS;
281 }
282
283 tag = alloc_mcc_tag(phba);
284 if (!tag) {
285 spin_unlock(&ctrl->mbox_lock);
286 return tag;
287 }
288
289 be_wrb_hdr_prepare(wrb, nonemb_cmd->size, false,
290 job->request_payload.sg_cnt);
291 mcc_sge->pa_hi = cpu_to_le32(upper_32_bits(nonemb_cmd->dma));
292 mcc_sge->pa_lo = cpu_to_le32(nonemb_cmd->dma & 0xFFFFFFFF);
293 mcc_sge->len = cpu_to_le32(nonemb_cmd->size);
294 wrb->tag0 |= tag;
295
296 be_mcc_notify(phba);
297
298 spin_unlock(&ctrl->mbox_lock);
299 return tag;
300}
301
03a12310 302int mgmt_epfw_cleanup(struct beiscsi_hba *phba, unsigned short chute)
6733b39a
JK		 303{
304 struct be_ctrl_info *ctrl = &phba->ctrl;
bfead3b2 305 struct be_mcc_wrb *wrb = wrb_from_mccq(phba);
6733b39a
JK		 306 struct iscsi_cleanup_req *req = embedded_payload(wrb);
307 int status = 0;
308
309 spin_lock(&ctrl->mbox_lock);
310 memset(wrb, 0, sizeof(*wrb));
311
312 be_wrb_hdr_prepare(wrb, sizeof(*req), true, 0);
313 be_cmd_hdr_prepare(&req->hdr, CMD_SUBSYSTEM_ISCSI,
314 OPCODE_COMMON_ISCSI_CLEANUP, sizeof(*req));
315
316 req->chute = chute;
069adc7b
JK		 317 req->hdr_ring_id = cpu_to_le16(HWI_GET_DEF_HDRQ_ID(phba));
318 req->data_ring_id = cpu_to_le16(HWI_GET_DEF_BUFQ_ID(phba));
6733b39a 319
bfead3b2 320 status = be_mcc_notify_wait(phba);
6733b39a
JK		 321 if (status)
322 shost_printk(KERN_WARNING, phba->shost,
323 " mgmt_epfw_cleanup , FAILED\n");
324 spin_unlock(&ctrl->mbox_lock);
325 return status;
326}
327
03a12310 328unsigned int mgmt_invalidate_icds(struct beiscsi_hba *phba,
4183122d 329 struct invalidate_command_table *inv_tbl,
3cbb7a74
JK		 330 unsigned int num_invalidate, unsigned int cid,
331 struct be_dma_mem *nonemb_cmd)
332
6733b39a 333{
6733b39a 334 struct be_ctrl_info *ctrl = &phba->ctrl;
756d29c8
JK		 335 struct be_mcc_wrb *wrb;
336 struct be_sge *sge;
6733b39a 337 struct invalidate_commands_params_in *req;
4183122d 338 unsigned int i, tag = 0;
756d29c8
JK		 339
340 spin_lock(&ctrl->mbox_lock);
341 tag = alloc_mcc_tag(phba);
342 if (!tag) {
343 spin_unlock(&ctrl->mbox_lock);
344 return tag;
345 }
6733b39a 346
3cbb7a74 347 req = nonemb_cmd->va;
f98c96b0 348 memset(req, 0, sizeof(*req));
756d29c8
JK		 349 wrb = wrb_from_mccq(phba);
350 sge = nonembedded_sgl(wrb);
351 wrb->tag0 |= tag;
6733b39a
JK		 352
353 be_wrb_hdr_prepare(wrb, sizeof(*req), false, 1);
354 be_cmd_hdr_prepare(&req->hdr, CMD_SUBSYSTEM_ISCSI,
355 OPCODE_COMMON_ISCSI_ERROR_RECOVERY_INVALIDATE_COMMANDS,
356 sizeof(*req));
357 req->ref_handle = 0;
358 req->cleanup_type = CMD_ISCSI_COMMAND_INVALIDATE;
4183122d
JK		 359 for (i = 0; i < num_invalidate; i++) {
360 req->table[i].icd = inv_tbl->icd;
361 req->table[i].cid = inv_tbl->cid;
362 req->icd_count++;
363 inv_tbl++;
364 }
3cbb7a74
JK		 365 sge->pa_hi = cpu_to_le32(upper_32_bits(nonemb_cmd->dma));
366 sge->pa_lo = cpu_to_le32(nonemb_cmd->dma & 0xFFFFFFFF);
367 sge->len = cpu_to_le32(nonemb_cmd->size);
6733b39a 368
756d29c8 369 be_mcc_notify(phba);
6733b39a 370 spin_unlock(&ctrl->mbox_lock);
756d29c8 371 return tag;
6733b39a
JK		 372}
373
03a12310 374unsigned int mgmt_invalidate_connection(struct beiscsi_hba *phba,
6733b39a
JK		 375 struct beiscsi_endpoint *beiscsi_ep,
376 unsigned short cid,
377 unsigned short issue_reset,
378 unsigned short savecfg_flag)
379{
380 struct be_ctrl_info *ctrl = &phba->ctrl;
756d29c8
JK		 381 struct be_mcc_wrb *wrb;
382 struct iscsi_invalidate_connection_params_in *req;
383 unsigned int tag = 0;
6733b39a
JK		 384
385 spin_lock(&ctrl->mbox_lock);
756d29c8
JK		 386 tag = alloc_mcc_tag(phba);
387 if (!tag) {
388 spin_unlock(&ctrl->mbox_lock);
389 return tag;
390 }
391 wrb = wrb_from_mccq(phba);
392 wrb->tag0 |= tag;
393 req = embedded_payload(wrb);
6733b39a
JK		 394
395 be_wrb_hdr_prepare(wrb, sizeof(*req), true, 0);
396 be_cmd_hdr_prepare(&req->hdr, CMD_SUBSYSTEM_ISCSI_INI,
397 OPCODE_ISCSI_INI_DRIVER_INVALIDATE_CONNECTION,
398 sizeof(*req));
399 req->session_handle = beiscsi_ep->fw_handle;
400 req->cid = cid;
401 if (issue_reset)
402 req->cleanup_type = CMD_ISCSI_CONNECTION_ISSUE_TCP_RST;
403 else
404 req->cleanup_type = CMD_ISCSI_CONNECTION_INVALIDATE;
405 req->save_cfg = savecfg_flag;
756d29c8 406 be_mcc_notify(phba);
6733b39a 407 spin_unlock(&ctrl->mbox_lock);
756d29c8 408 return tag;
6733b39a
JK		 409}
410
03a12310 411unsigned int mgmt_upload_connection(struct beiscsi_hba *phba,
6733b39a
JK		 412 unsigned short cid, unsigned int upload_flag)
413{
414 struct be_ctrl_info *ctrl = &phba->ctrl;
756d29c8
JK		 415 struct be_mcc_wrb *wrb;
416 struct tcp_upload_params_in *req;
417 unsigned int tag = 0;
6733b39a
JK		 418
419 spin_lock(&ctrl->mbox_lock);
756d29c8
JK		 420 tag = alloc_mcc_tag(phba);
421 if (!tag) {
422 spin_unlock(&ctrl->mbox_lock);
423 return tag;
424 }
425 wrb = wrb_from_mccq(phba);
426 req = embedded_payload(wrb);
427 wrb->tag0 |= tag;
6733b39a
JK		 428
429 be_wrb_hdr_prepare(wrb, sizeof(*req), true, 0);
430 be_cmd_hdr_prepare(&req->hdr, CMD_COMMON_TCP_UPLOAD,
431 OPCODE_COMMON_TCP_UPLOAD, sizeof(*req));
432 req->id = (unsigned short)cid;
433 req->upload_type = (unsigned char)upload_flag;
756d29c8 434 be_mcc_notify(phba);
6733b39a 435 spin_unlock(&ctrl->mbox_lock);
756d29c8 436 return tag;
6733b39a
JK		 437}
438
439int mgmt_open_connection(struct beiscsi_hba *phba,
440 struct sockaddr *dst_addr,
3cbb7a74
JK		 441 struct beiscsi_endpoint *beiscsi_ep,
442 struct be_dma_mem *nonemb_cmd)
6733b39a
JK		 443{
444 struct hwi_controller *phwi_ctrlr;
445 struct hwi_context_memory *phwi_context;
446 struct sockaddr_in *daddr_in = (struct sockaddr_in *)dst_addr;
447 struct sockaddr_in6 *daddr_in6 = (struct sockaddr_in6 *)dst_addr;
448 struct be_ctrl_info *ctrl = &phba->ctrl;
756d29c8
JK		 449 struct be_mcc_wrb *wrb;
450 struct tcp_connect_and_offload_in *req;
6733b39a
JK		 451 unsigned short def_hdr_id;
452 unsigned short def_data_id;
453 struct phys_addr template_address = { 0, 0 };
454 struct phys_addr *ptemplate_address;
756d29c8 455 unsigned int tag = 0;
bfead3b2 456 unsigned int i;
6733b39a 457 unsigned short cid = beiscsi_ep->ep_cid;
3cbb7a74 458 struct be_sge *sge;
6733b39a
JK		 459
460 phwi_ctrlr = phba->phwi_ctrlr;
461 phwi_context = phwi_ctrlr->phwi_ctxt;
462 def_hdr_id = (unsigned short)HWI_GET_DEF_HDRQ_ID(phba);
463 def_data_id = (unsigned short)HWI_GET_DEF_BUFQ_ID(phba);
464
465 ptemplate_address = &template_address;
466 ISCSI_GET_PDU_TEMPLATE_ADDRESS(phba, ptemplate_address);
467 spin_lock(&ctrl->mbox_lock);
756d29c8
JK		 468 tag = alloc_mcc_tag(phba);
469 if (!tag) {
470 spin_unlock(&ctrl->mbox_lock);
471 return tag;
472 }
473 wrb = wrb_from_mccq(phba);
3cbb7a74
JK		 474 memset(wrb, 0, sizeof(*wrb));
475 sge = nonembedded_sgl(wrb);
476
477 req = nonemb_cmd->va;
478 memset(req, 0, sizeof(*req));
756d29c8 479 wrb->tag0 |= tag;
6733b39a 480
b15d05b0 481 be_wrb_hdr_prepare(wrb, sizeof(*req), false, 1);
6733b39a
JK		 482 be_cmd_hdr_prepare(&req->hdr, CMD_SUBSYSTEM_ISCSI,
483 OPCODE_COMMON_ISCSI_TCP_CONNECT_AND_OFFLOAD,
484 sizeof(*req));
485 if (dst_addr->sa_family == PF_INET) {
486 __be32 s_addr = daddr_in->sin_addr.s_addr;
487 req->ip_address.ip_type = BE2_IPV4;
0e43895e
MC		 488 req->ip_address.addr[0] = s_addr & 0x000000ff;
489 req->ip_address.addr[1] = (s_addr & 0x0000ff00) >> 8;
490 req->ip_address.addr[2] = (s_addr & 0x00ff0000) >> 16;
491 req->ip_address.addr[3] = (s_addr & 0xff000000) >> 24;
6733b39a
JK		 492 req->tcp_port = ntohs(daddr_in->sin_port);
493 beiscsi_ep->dst_addr = daddr_in->sin_addr.s_addr;
494 beiscsi_ep->dst_tcpport = ntohs(daddr_in->sin_port);
495 beiscsi_ep->ip_type = BE2_IPV4;
496 } else if (dst_addr->sa_family == PF_INET6) {
497 req->ip_address.ip_type = BE2_IPV6;
0e43895e 498 memcpy(&req->ip_address.addr,
6733b39a
JK		 499 &daddr_in6->sin6_addr.in6_u.u6_addr8, 16);
500 req->tcp_port = ntohs(daddr_in6->sin6_port);
501 beiscsi_ep->dst_tcpport = ntohs(daddr_in6->sin6_port);
502 memcpy(&beiscsi_ep->dst6_addr,
503 &daddr_in6->sin6_addr.in6_u.u6_addr8, 16);
504 beiscsi_ep->ip_type = BE2_IPV6;
505 } else{
506 shost_printk(KERN_ERR, phba->shost, "unknown addr family %d\n",
507 dst_addr->sa_family);
508 spin_unlock(&ctrl->mbox_lock);
5db3f33d 509 free_mcc_tag(&phba->ctrl, tag);
6733b39a
JK		 510 return -EINVAL;
511
512 }
513 req->cid = cid;
bfead3b2
JK		 514 i = phba->nxt_cqid++;
515 if (phba->nxt_cqid == phba->num_cpus)
516 phba->nxt_cqid = 0;
517 req->cq_id = phwi_context->be_cq[i].id;
457ff3b7 518 SE_DEBUG(DBG_LVL_8, "i=%d cq_id=%d\n", i, req->cq_id);
6733b39a
JK		 519 req->defq_id = def_hdr_id;
520 req->hdr_ring_id = def_hdr_id;
521 req->data_ring_id = def_data_id;
522 req->do_offload = 1;
523 req->dataout_template_pa.lo = ptemplate_address->lo;
524 req->dataout_template_pa.hi = ptemplate_address->hi;
3cbb7a74
JK		 525 sge->pa_hi = cpu_to_le32(upper_32_bits(nonemb_cmd->dma));
526 sge->pa_lo = cpu_to_le32(nonemb_cmd->dma & 0xFFFFFFFF);
527 sge->len = cpu_to_le32(nonemb_cmd->size);
756d29c8 528 be_mcc_notify(phba);
6733b39a 529 spin_unlock(&ctrl->mbox_lock);
756d29c8 530 return tag;
6733b39a 531}
bfead3b2 532
0e43895e 533unsigned int mgmt_get_all_if_id(struct beiscsi_hba *phba)
bfead3b2
JK		 534{
535 struct be_ctrl_info *ctrl = &phba->ctrl;
0e43895e
MC		 536 struct be_mcc_wrb *wrb = wrb_from_mbox(&ctrl->mbox_mem);
537 struct be_cmd_get_all_if_id_req *req = embedded_payload(wrb);
538 struct be_cmd_get_all_if_id_req *pbe_allid = req;
539 int status = 0;
540
541 memset(wrb, 0, sizeof(*wrb));
542
543 spin_lock(&ctrl->mbox_lock);
544
545 be_wrb_hdr_prepare(wrb, sizeof(*req), true, 0);
546 be_cmd_hdr_prepare(&req->hdr, CMD_SUBSYSTEM_ISCSI,
547 OPCODE_COMMON_ISCSI_NTWK_GET_ALL_IF_ID,
548 sizeof(*req));
549 status = be_mbox_notify(ctrl);
550 if (!status)
551 phba->interface_handle = pbe_allid->if_hndl_list[0];
552 else {
553 shost_printk(KERN_WARNING, phba->shost,
554 "Failed in mgmt_get_all_if_id\n");
555 }
556 spin_unlock(&ctrl->mbox_lock);
557
558 return status;
559}
560
561static int mgmt_exec_nonemb_cmd(struct beiscsi_hba *phba,
562 struct be_dma_mem *nonemb_cmd, void *resp_buf,
563 int resp_buf_len)
564{
565 struct be_ctrl_info *ctrl = &phba->ctrl;
566 struct be_mcc_wrb *wrb = wrb_from_mccq(phba);
567 unsigned short status, extd_status;
568 struct be_sge *sge;
569 unsigned int tag;
570 int rc = 0;
bfead3b2 571
bfead3b2 572 spin_lock(&ctrl->mbox_lock);
756d29c8
JK		 573 tag = alloc_mcc_tag(phba);
574 if (!tag) {
575 spin_unlock(&ctrl->mbox_lock);
0e43895e
MC		 576 rc = -ENOMEM;
577 goto free_cmd;
756d29c8 578 }
0e43895e 579 memset(wrb, 0, sizeof(*wrb));
756d29c8 580 wrb->tag0 |= tag;
0e43895e
MC		 581 sge = nonembedded_sgl(wrb);
582
583 be_wrb_hdr_prepare(wrb, nonemb_cmd->size, false, 1);
584 sge->pa_hi = cpu_to_le32(upper_32_bits(nonemb_cmd->dma));
585 sge->pa_lo = cpu_to_le32(nonemb_cmd->dma & 0xFFFFFFFF);
586 sge->len = cpu_to_le32(nonemb_cmd->size);
bfead3b2 587
756d29c8 588 be_mcc_notify(phba);
bfead3b2 589 spin_unlock(&ctrl->mbox_lock);
0e43895e
MC		 590
591 wait_event_interruptible(phba->ctrl.mcc_wait[tag],
592 phba->ctrl.mcc_numtag[tag]);
593
594 extd_status = (phba->ctrl.mcc_numtag[tag] & 0x0000FF00) >> 8;
595 status = phba->ctrl.mcc_numtag[tag] & 0x000000FF;
596 if (status || extd_status) {
597 SE_DEBUG(DBG_LVL_1,
598 "mgmt_exec_nonemb_cmd Failed status = %d"
599 "extd_status = %d\n", status, extd_status);
600 rc = -EIO;
601 goto free_tag;
602 }
603
604 if (resp_buf)
605 memcpy(resp_buf, nonemb_cmd->va, resp_buf_len);
606
607free_tag:
608 free_mcc_tag(&phba->ctrl, tag);
609free_cmd:
610 pci_free_consistent(ctrl->pdev, nonemb_cmd->size,
611 nonemb_cmd->va, nonemb_cmd->dma);
612 return rc;
613}
614
615static int mgmt_alloc_cmd_data(struct beiscsi_hba *phba, struct be_dma_mem *cmd,
616 int iscsi_cmd, int size)
617{
b83d543f 618 cmd->va = pci_alloc_consistent(phba->ctrl.pdev, size, &cmd->dma);
0e43895e
MC		 619 if (!cmd->va) {
620 SE_DEBUG(DBG_LVL_1, "Failed to allocate memory for if info\n");
621 return -ENOMEM;
622 }
b83d543f 623 memset(cmd->va, 0, size);
0e43895e
MC		 624 cmd->size = size;
625 be_cmd_hdr_prepare(cmd->va, CMD_SUBSYSTEM_ISCSI, iscsi_cmd, size);
626 return 0;
bfead3b2
JK		 627}
628
0e43895e
MC		 629static int
630mgmt_static_ip_modify(struct beiscsi_hba *phba,
631 struct be_cmd_get_if_info_resp *if_info,
632 struct iscsi_iface_param_info *ip_param,
633 struct iscsi_iface_param_info *subnet_param,
634 uint32_t ip_action)
635{
636 struct be_cmd_set_ip_addr_req *req;
637 struct be_dma_mem nonemb_cmd;
638 uint32_t ip_type;
639 int rc;
640
641 rc = mgmt_alloc_cmd_data(phba, &nonemb_cmd,
642 OPCODE_COMMON_ISCSI_NTWK_MODIFY_IP_ADDR,
643 sizeof(*req));
644 if (rc)
645 return rc;
646
647 ip_type = (ip_param->param == ISCSI_NET_PARAM_IPV6_ADDR) ?
648 BE2_IPV6 : BE2_IPV4 ;
649
650 req = nonemb_cmd.va;
651 req->ip_params.record_entry_count = 1;
652 req->ip_params.ip_record.action = ip_action;
653 req->ip_params.ip_record.interface_hndl =
654 phba->interface_handle;
655 req->ip_params.ip_record.ip_addr.size_of_structure =
656 sizeof(struct be_ip_addr_subnet_format);
657 req->ip_params.ip_record.ip_addr.ip_type = ip_type;
658
659 if (ip_action == IP_ACTION_ADD) {
660 memcpy(req->ip_params.ip_record.ip_addr.addr, ip_param->value,
661 ip_param->len);
662
663 if (subnet_param)
664 memcpy(req->ip_params.ip_record.ip_addr.subnet_mask,
665 subnet_param->value, subnet_param->len);
666 } else {
667 memcpy(req->ip_params.ip_record.ip_addr.addr,
668 if_info->ip_addr.addr, ip_param->len);
669
670 memcpy(req->ip_params.ip_record.ip_addr.subnet_mask,
671 if_info->ip_addr.subnet_mask, ip_param->len);
672 }
673
674 rc = mgmt_exec_nonemb_cmd(phba, &nonemb_cmd, NULL, 0);
675 if (rc < 0)
676 shost_printk(KERN_WARNING, phba->shost,
677 "Failed to Modify existing IP Address\n");
678 return rc;
679}
680
681static int mgmt_modify_gateway(struct beiscsi_hba *phba, uint8_t *gt_addr,
682 uint32_t gtway_action, uint32_t param_len)
683{
684 struct be_cmd_set_def_gateway_req *req;
685 struct be_dma_mem nonemb_cmd;
686 int rt_val;
687
688
689 rt_val = mgmt_alloc_cmd_data(phba, &nonemb_cmd,
690 OPCODE_COMMON_ISCSI_NTWK_MODIFY_DEFAULT_GATEWAY,
691 sizeof(*req));
692 if (rt_val)
693 return rt_val;
694
695 req = nonemb_cmd.va;
696 req->action = gtway_action;
697 req->ip_addr.ip_type = BE2_IPV4;
698
699 memcpy(req->ip_addr.addr, gt_addr, param_len);
700
701 return mgmt_exec_nonemb_cmd(phba, &nonemb_cmd, NULL, 0);
702}
703
704int mgmt_set_ip(struct beiscsi_hba *phba,
705 struct iscsi_iface_param_info *ip_param,
706 struct iscsi_iface_param_info *subnet_param,
707 uint32_t boot_proto)
708{
709 struct be_cmd_get_def_gateway_resp gtway_addr_set;
710 struct be_cmd_get_if_info_resp if_info;
711 struct be_cmd_set_dhcp_req *dhcpreq;
712 struct be_cmd_rel_dhcp_req *reldhcp;
713 struct be_dma_mem nonemb_cmd;
714 uint8_t *gtway_addr;
715 uint32_t ip_type;
716 int rc;
717
718 if (mgmt_get_all_if_id(phba))
719 return -EIO;
720
721 memset(&if_info, 0, sizeof(if_info));
722 ip_type = (ip_param->param == ISCSI_NET_PARAM_IPV6_ADDR) ?
723 BE2_IPV6 : BE2_IPV4 ;
724
725 rc = mgmt_get_if_info(phba, ip_type, &if_info);
726 if (rc)
727 return rc;
728
729 if (boot_proto == ISCSI_BOOTPROTO_DHCP) {
730 if (if_info.dhcp_state) {
731 shost_printk(KERN_WARNING, phba->shost,
732 "DHCP Already Enabled\n");
733 return 0;
734 }
735 /* The ip_param->len is 1 in DHCP case. Setting
736 proper IP len as this it is used while
737 freeing the Static IP.
738 */
739 ip_param->len = (ip_param->param == ISCSI_NET_PARAM_IPV6_ADDR) ?
740 IP_V6_LEN : IP_V4_LEN;
741
742 } else {
743 if (if_info.dhcp_state) {
744
745 memset(&if_info, 0, sizeof(if_info));
746 rc = mgmt_alloc_cmd_data(phba, &nonemb_cmd,
747 OPCODE_COMMON_ISCSI_NTWK_REL_STATELESS_IP_ADDR,
748 sizeof(*reldhcp));
749
750 if (rc)
751 return rc;
752
753 reldhcp = nonemb_cmd.va;
754 reldhcp->interface_hndl = phba->interface_handle;
755 reldhcp->ip_type = ip_type;
756
757 rc = mgmt_exec_nonemb_cmd(phba, &nonemb_cmd, NULL, 0);
758 if (rc < 0) {
759 shost_printk(KERN_WARNING, phba->shost,
760 "Failed to Delete existing dhcp\n");
761 return rc;
762 }
763 }
764 }
765
766 /* Delete the Static IP Set */
767 if (if_info.ip_addr.addr[0]) {
768 rc = mgmt_static_ip_modify(phba, &if_info, ip_param, NULL,
769 IP_ACTION_DEL);
770 if (rc)
771 return rc;
772 }
773
774 /* Delete the Gateway settings if mode change is to DHCP */
775 if (boot_proto == ISCSI_BOOTPROTO_DHCP) {
776 memset(&gtway_addr_set, 0, sizeof(gtway_addr_set));
777 rc = mgmt_get_gateway(phba, BE2_IPV4, &gtway_addr_set);
778 if (rc) {
779 shost_printk(KERN_WARNING, phba->shost,
780 "Failed to Get Gateway Addr\n");
781 return rc;
782 }
783
784 if (gtway_addr_set.ip_addr.addr[0]) {
785 gtway_addr = (uint8_t *)&gtway_addr_set.ip_addr.addr;
786 rc = mgmt_modify_gateway(phba, gtway_addr,
787 IP_ACTION_DEL, IP_V4_LEN);
788
789 if (rc) {
790 shost_printk(KERN_WARNING, phba->shost,
791 "Failed to clear Gateway Addr Set\n");
792 return rc;
793 }
794 }
795 }
796
797 /* Set Adapter to DHCP/Static Mode */
798 if (boot_proto == ISCSI_BOOTPROTO_DHCP) {
799 rc = mgmt_alloc_cmd_data(phba, &nonemb_cmd,
800 OPCODE_COMMON_ISCSI_NTWK_CONFIG_STATELESS_IP_ADDR,
801 sizeof(*dhcpreq));
802 if (rc)
803 return rc;
804
805 dhcpreq = nonemb_cmd.va;
806 dhcpreq->flags = BLOCKING;
807 dhcpreq->retry_count = 1;
808 dhcpreq->interface_hndl = phba->interface_handle;
809 dhcpreq->ip_type = BE2_DHCP_V4;
810
811 return mgmt_exec_nonemb_cmd(phba, &nonemb_cmd, NULL, 0);
812 } else {
813 return mgmt_static_ip_modify(phba, &if_info, ip_param,
814 subnet_param, IP_ACTION_ADD);
815 }
816
817 return rc;
818}
819
820int mgmt_set_gateway(struct beiscsi_hba *phba,
821 struct iscsi_iface_param_info *gateway_param)
822{
823 struct be_cmd_get_def_gateway_resp gtway_addr_set;
824 uint8_t *gtway_addr;
825 int rt_val;
826
827 memset(&gtway_addr_set, 0, sizeof(gtway_addr_set));
828 rt_val = mgmt_get_gateway(phba, BE2_IPV4, &gtway_addr_set);
829 if (rt_val) {
830 shost_printk(KERN_WARNING, phba->shost,
831 "Failed to Get Gateway Addr\n");
832 return rt_val;
833 }
834
835 if (gtway_addr_set.ip_addr.addr[0]) {
836 gtway_addr = (uint8_t *)&gtway_addr_set.ip_addr.addr;
837 rt_val = mgmt_modify_gateway(phba, gtway_addr, IP_ACTION_DEL,
838 gateway_param->len);
839 if (rt_val) {
840 shost_printk(KERN_WARNING, phba->shost,
841 "Failed to clear Gateway Addr Set\n");
842 return rt_val;
843 }
844 }
845
846 gtway_addr = (uint8_t *)&gateway_param->value;
847 rt_val = mgmt_modify_gateway(phba, gtway_addr, IP_ACTION_ADD,
848 gateway_param->len);
849
850 if (rt_val)
851 shost_printk(KERN_WARNING, phba->shost,
852 "Failed to Set Gateway Addr\n");
853
854 return rt_val;
855}
856
857int mgmt_get_gateway(struct beiscsi_hba *phba, int ip_type,
858 struct be_cmd_get_def_gateway_resp *gateway)
859{
860 struct be_cmd_get_def_gateway_req *req;
861 struct be_dma_mem nonemb_cmd;
862 int rc;
863
864 rc = mgmt_alloc_cmd_data(phba, &nonemb_cmd,
865 OPCODE_COMMON_ISCSI_NTWK_GET_DEFAULT_GATEWAY,
866 sizeof(*gateway));
867 if (rc)
868 return rc;
869
870 req = nonemb_cmd.va;
871 req->ip_type = ip_type;
872
873 return mgmt_exec_nonemb_cmd(phba, &nonemb_cmd, gateway,
874 sizeof(*gateway));
875}
876
877int mgmt_get_if_info(struct beiscsi_hba *phba, int ip_type,
878 struct be_cmd_get_if_info_resp *if_info)
879{
880 struct be_cmd_get_if_info_req *req;
881 struct be_dma_mem nonemb_cmd;
882 int rc;
883
884 if (mgmt_get_all_if_id(phba))
885 return -EIO;
886
887 rc = mgmt_alloc_cmd_data(phba, &nonemb_cmd,
888 OPCODE_COMMON_ISCSI_NTWK_GET_IF_INFO,
889 sizeof(*if_info));
890 if (rc)
891 return rc;
892
893 req = nonemb_cmd.va;
894 req->interface_hndl = phba->interface_handle;
895 req->ip_type = ip_type;
896
897 return mgmt_exec_nonemb_cmd(phba, &nonemb_cmd, if_info,
898 sizeof(*if_info));
899}
900
901int mgmt_get_nic_conf(struct beiscsi_hba *phba,
902 struct be_cmd_get_nic_conf_resp *nic)
903{
904 struct be_dma_mem nonemb_cmd;
905 int rc;
906
907 rc = mgmt_alloc_cmd_data(phba, &nonemb_cmd,
908 OPCODE_COMMON_ISCSI_NTWK_GET_NIC_CONFIG,
909 sizeof(*nic));
910 if (rc)
911 return rc;
912
913 return mgmt_exec_nonemb_cmd(phba, &nonemb_cmd, nic, sizeof(*nic));
914}
915
916
917
2177199d
JSJ		 918unsigned int be_cmd_get_initname(struct beiscsi_hba *phba)
919{
920 unsigned int tag = 0;
921 struct be_mcc_wrb *wrb;
922 struct be_cmd_hba_name *req;
923 struct be_ctrl_info *ctrl = &phba->ctrl;
924
925 spin_lock(&ctrl->mbox_lock);
926 tag = alloc_mcc_tag(phba);
927 if (!tag) {
928 spin_unlock(&ctrl->mbox_lock);
929 return tag;
930 }
931
932 wrb = wrb_from_mccq(phba);
933 req = embedded_payload(wrb);
934 wrb->tag0 |= tag;
935 be_wrb_hdr_prepare(wrb, sizeof(*req), true, 0);
936 be_cmd_hdr_prepare(&req->hdr, CMD_SUBSYSTEM_ISCSI_INI,
937 OPCODE_ISCSI_INI_CFG_GET_HBA_NAME,
938 sizeof(*req));
939
940 be_mcc_notify(phba);
941 spin_unlock(&ctrl->mbox_lock);
942 return tag;
943}
c62eef0d
JSJ		 944
945unsigned int be_cmd_get_port_speed(struct beiscsi_hba *phba)
946{
947 unsigned int tag = 0;
948 struct be_mcc_wrb *wrb;
949 struct be_cmd_ntwk_link_status_req *req;
950 struct be_ctrl_info *ctrl = &phba->ctrl;
951
952 spin_lock(&ctrl->mbox_lock);
953 tag = alloc_mcc_tag(phba);
954 if (!tag) {
955 spin_unlock(&ctrl->mbox_lock);
956 return tag;
957 }
958
959 wrb = wrb_from_mccq(phba);
960 req = embedded_payload(wrb);
961 wrb->tag0 |= tag;
962 be_wrb_hdr_prepare(wrb, sizeof(*req), true, 0);
963 be_cmd_hdr_prepare(&req->hdr, CMD_SUBSYSTEM_COMMON,
964 OPCODE_COMMON_NTWK_LINK_STATUS_QUERY,
965 sizeof(*req));
966
967 be_mcc_notify(phba);
968 spin_unlock(&ctrl->mbox_lock);
969 return tag;
970}
9aef4200
JSJ		 971
972/**
973 * be_mgmt_get_boot_shandle()- Get the session handle
974 * @phba: device priv structure instance
975 * @s_handle: session handle returned for boot session.
976 *
977 * Get the boot target session handle. In case of
978 * crashdump mode driver has to issue and MBX Cmd
979 * for FW to login to boot target
980 *
981 * return
982 * Success: 0
983 * Failure: Non-Zero value
984 *
985 **/
986int be_mgmt_get_boot_shandle(struct beiscsi_hba *phba,
987 unsigned int *s_handle)
988{
989 struct be_cmd_get_boot_target_resp *boot_resp;
990 struct be_mcc_wrb *wrb;
991 unsigned int tag, wrb_num;
992 uint8_t boot_retry = 3;
993 unsigned short status, extd_status;
994 struct be_queue_info *mccq = &phba->ctrl.mcc_obj.q;
995
996 do {
997 /* Get the Boot Target Session Handle and Count*/
998 tag = mgmt_get_boot_target(phba);
999 if (!tag) {
1000 SE_DEBUG(DBG_LVL_1, "mgmt_get_boot_target Failed\n");
1001 return -EAGAIN;
1002 } else
1003 wait_event_interruptible(phba->ctrl.mcc_wait[tag],
1004 phba->ctrl.mcc_numtag[tag]);
1005
1006 wrb_num = (phba->ctrl.mcc_numtag[tag] & 0x00FF0000) >> 16;
1007 extd_status = (phba->ctrl.mcc_numtag[tag] & 0x0000FF00) >> 8;
1008 status = phba->ctrl.mcc_numtag[tag] & 0x000000FF;
1009 if (status || extd_status) {
1010 SE_DEBUG(DBG_LVL_1, "mgmt_get_boot_target Failed"
1011 " status = %d extd_status = %d\n",
1012 status, extd_status);
1013 free_mcc_tag(&phba->ctrl, tag);
1014 return -EBUSY;
1015 }
1016 wrb = queue_get_wrb(mccq, wrb_num);
1017 free_mcc_tag(&phba->ctrl, tag);
1018 boot_resp = embedded_payload(wrb);
1019
1020 /* Check if the there are any Boot targets configured */
1021 if (!boot_resp->boot_session_count) {
1022 SE_DEBUG(DBG_LVL_8, "No boot targets configured\n");
1023 return -ENXIO;
1024 }
1025
1026 /* FW returns the session handle of the boot session */
1027 if (boot_resp->boot_session_handle != INVALID_SESS_HANDLE) {
1028 *s_handle = boot_resp->boot_session_handle;
1029 return 0;
1030 }
1031
1032 /* Issue MBX Cmd to FW to login to the boot target */
1033 tag = mgmt_reopen_session(phba, BE_REOPEN_BOOT_SESSIONS,
1034 INVALID_SESS_HANDLE);
1035 if (!tag) {
1036 SE_DEBUG(DBG_LVL_1, "mgmt_reopen_session Failed\n");
1037 return -EAGAIN;
1038 } else
1039 wait_event_interruptible(phba->ctrl.mcc_wait[tag],
1040 phba->ctrl.mcc_numtag[tag]);
1041
1042 wrb_num = (phba->ctrl.mcc_numtag[tag] & 0x00FF0000) >> 16;
1043 extd_status = (phba->ctrl.mcc_numtag[tag] & 0x0000FF00) >> 8;
1044 status = phba->ctrl.mcc_numtag[tag] & 0x000000FF;
1045 if (status || extd_status) {
1046 SE_DEBUG(DBG_LVL_1, "mgmt_reopen_session Failed"
1047 " status = %d extd_status = %d\n",
1048 status, extd_status);
1049 free_mcc_tag(&phba->ctrl, tag);
1050 return -EBUSY;
1051 }
1052 free_mcc_tag(&phba->ctrl, tag);
1053
1054 } while (--boot_retry);
1055
1056 /* Couldn't log into the boot target */
1057 SE_DEBUG(DBG_LVL_1, "Login to Boot Target Failed\n");
1058 return -ENXIO;
1059}
Linux 6.x block layer and io_uring tree(s)