xref: /linux/drivers/scsi/be2iscsi/be_cmds.c (revision 1ac731c529cd4d6adbce134754b51ff7d822b145)
1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3  * Copyright 2017 Broadcom. All Rights Reserved.
4  * The term "Broadcom" refers to Broadcom Limited and/or its subsidiaries.
5  *
6  * Contact Information:
7  * linux-drivers@broadcom.com
8  */
9 
10 #include <scsi/iscsi_proto.h>
11 
12 #include "be_main.h"
13 #include "be.h"
14 #include "be_mgmt.h"
15 
16 /* UE Status Low CSR */
17 static const char * const desc_ue_status_low[] = {
18 	"CEV",
19 	"CTX",
20 	"DBUF",
21 	"ERX",
22 	"Host",
23 	"MPU",
24 	"NDMA",
25 	"PTC ",
26 	"RDMA ",
27 	"RXF ",
28 	"RXIPS ",
29 	"RXULP0 ",
30 	"RXULP1 ",
31 	"RXULP2 ",
32 	"TIM ",
33 	"TPOST ",
34 	"TPRE ",
35 	"TXIPS ",
36 	"TXULP0 ",
37 	"TXULP1 ",
38 	"UC ",
39 	"WDMA ",
40 	"TXULP2 ",
41 	"HOST1 ",
42 	"P0_OB_LINK ",
43 	"P1_OB_LINK ",
44 	"HOST_GPIO ",
45 	"MBOX ",
46 	"AXGMAC0",
47 	"AXGMAC1",
48 	"JTAG",
49 	"MPU_INTPEND"
50 };
51 
52 /* UE Status High CSR */
53 static const char * const desc_ue_status_hi[] = {
54 	"LPCMEMHOST",
55 	"MGMT_MAC",
56 	"PCS0ONLINE",
57 	"MPU_IRAM",
58 	"PCS1ONLINE",
59 	"PCTL0",
60 	"PCTL1",
61 	"PMEM",
62 	"RR",
63 	"TXPB",
64 	"RXPP",
65 	"XAUI",
66 	"TXP",
67 	"ARM",
68 	"IPC",
69 	"HOST2",
70 	"HOST3",
71 	"HOST4",
72 	"HOST5",
73 	"HOST6",
74 	"HOST7",
75 	"HOST8",
76 	"HOST9",
77 	"NETC",
78 	"Unknown",
79 	"Unknown",
80 	"Unknown",
81 	"Unknown",
82 	"Unknown",
83 	"Unknown",
84 	"Unknown",
85 	"Unknown"
86 };
87 
alloc_mcc_wrb(struct beiscsi_hba * phba,unsigned int * ref_tag)88 struct be_mcc_wrb *alloc_mcc_wrb(struct beiscsi_hba *phba,
89 				 unsigned int *ref_tag)
90 {
91 	struct be_queue_info *mccq = &phba->ctrl.mcc_obj.q;
92 	struct be_mcc_wrb *wrb = NULL;
93 	unsigned int tag;
94 
95 	spin_lock(&phba->ctrl.mcc_lock);
96 	if (mccq->used == mccq->len) {
97 		beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT |
98 			    BEISCSI_LOG_CONFIG | BEISCSI_LOG_MBOX,
99 			    "BC_%d : MCC queue full: WRB used %u tag avail %u\n",
100 			    mccq->used, phba->ctrl.mcc_tag_available);
101 		goto alloc_failed;
102 	}
103 
104 	if (!phba->ctrl.mcc_tag_available)
105 		goto alloc_failed;
106 
107 	tag = phba->ctrl.mcc_tag[phba->ctrl.mcc_alloc_index];
108 	if (!tag) {
109 		beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT |
110 			    BEISCSI_LOG_CONFIG | BEISCSI_LOG_MBOX,
111 			    "BC_%d : MCC tag 0 allocated: tag avail %u alloc index %u\n",
112 			    phba->ctrl.mcc_tag_available,
113 			    phba->ctrl.mcc_alloc_index);
114 		goto alloc_failed;
115 	}
116 
117 	/* return this tag for further reference */
118 	*ref_tag = tag;
119 	phba->ctrl.mcc_tag[phba->ctrl.mcc_alloc_index] = 0;
120 	phba->ctrl.mcc_tag_status[tag] = 0;
121 	phba->ctrl.ptag_state[tag].tag_state = 0;
122 	phba->ctrl.ptag_state[tag].cbfn = NULL;
123 	phba->ctrl.mcc_tag_available--;
124 	if (phba->ctrl.mcc_alloc_index == (MAX_MCC_CMD - 1))
125 		phba->ctrl.mcc_alloc_index = 0;
126 	else
127 		phba->ctrl.mcc_alloc_index++;
128 
129 	wrb = queue_head_node(mccq);
130 	memset(wrb, 0, sizeof(*wrb));
131 	wrb->tag0 = tag;
132 	wrb->tag0 |= (mccq->head << MCC_Q_WRB_IDX_SHIFT) & MCC_Q_WRB_IDX_MASK;
133 	queue_head_inc(mccq);
134 	mccq->used++;
135 
136 alloc_failed:
137 	spin_unlock(&phba->ctrl.mcc_lock);
138 	return wrb;
139 }
140 
free_mcc_wrb(struct be_ctrl_info * ctrl,unsigned int tag)141 void free_mcc_wrb(struct be_ctrl_info *ctrl, unsigned int tag)
142 {
143 	struct be_queue_info *mccq = &ctrl->mcc_obj.q;
144 
145 	spin_lock(&ctrl->mcc_lock);
146 	tag = tag & MCC_Q_CMD_TAG_MASK;
147 	ctrl->mcc_tag[ctrl->mcc_free_index] = tag;
148 	if (ctrl->mcc_free_index == (MAX_MCC_CMD - 1))
149 		ctrl->mcc_free_index = 0;
150 	else
151 		ctrl->mcc_free_index++;
152 	ctrl->mcc_tag_available++;
153 	mccq->used--;
154 	spin_unlock(&ctrl->mcc_lock);
155 }
156 
157 /*
158  * beiscsi_mcc_compl_status - Return the status of MCC completion
159  * @phba: Driver private structure
160  * @tag: Tag for the MBX Command
161  * @wrb: the WRB used for the MBX Command
162  * @mbx_cmd_mem: ptr to memory allocated for MBX Cmd
163  *
164  * return
165  * Success: 0
166  * Failure: Non-Zero
167  */
__beiscsi_mcc_compl_status(struct beiscsi_hba * phba,unsigned int tag,struct be_mcc_wrb ** wrb,struct be_dma_mem * mbx_cmd_mem)168 int __beiscsi_mcc_compl_status(struct beiscsi_hba *phba,
169 			       unsigned int tag,
170 			       struct be_mcc_wrb **wrb,
171 			       struct be_dma_mem *mbx_cmd_mem)
172 {
173 	struct be_queue_info *mccq = &phba->ctrl.mcc_obj.q;
174 	uint16_t status = 0, addl_status = 0, wrb_num = 0;
175 	struct be_cmd_resp_hdr *mbx_resp_hdr;
176 	struct be_cmd_req_hdr *mbx_hdr;
177 	struct be_mcc_wrb *temp_wrb;
178 	uint32_t mcc_tag_status;
179 	int rc = 0;
180 
181 	mcc_tag_status = phba->ctrl.mcc_tag_status[tag];
182 	status = (mcc_tag_status & CQE_STATUS_MASK);
183 	addl_status = ((mcc_tag_status & CQE_STATUS_ADDL_MASK) >>
184 			CQE_STATUS_ADDL_SHIFT);
185 
186 	if (mbx_cmd_mem) {
187 		mbx_hdr = (struct be_cmd_req_hdr *)mbx_cmd_mem->va;
188 	} else {
189 		wrb_num = (mcc_tag_status & CQE_STATUS_WRB_MASK) >>
190 			  CQE_STATUS_WRB_SHIFT;
191 		temp_wrb = (struct be_mcc_wrb *)queue_get_wrb(mccq, wrb_num);
192 		mbx_hdr = embedded_payload(temp_wrb);
193 
194 		if (wrb)
195 			*wrb = temp_wrb;
196 	}
197 
198 	if (status || addl_status) {
199 		beiscsi_log(phba, KERN_WARNING,
200 			    BEISCSI_LOG_INIT | BEISCSI_LOG_EH |
201 			    BEISCSI_LOG_CONFIG,
202 			    "BC_%d : MBX Cmd Failed for Subsys : %d Opcode : %d with Status : %d and Extd_Status : %d\n",
203 			    mbx_hdr->subsystem, mbx_hdr->opcode,
204 			    status, addl_status);
205 		rc = -EIO;
206 		if (status == MCC_STATUS_INSUFFICIENT_BUFFER) {
207 			mbx_resp_hdr = (struct be_cmd_resp_hdr *)mbx_hdr;
208 			beiscsi_log(phba, KERN_WARNING,
209 				    BEISCSI_LOG_INIT | BEISCSI_LOG_EH |
210 				    BEISCSI_LOG_CONFIG,
211 				    "BC_%d : Insufficient Buffer Error Resp_Len : %d Actual_Resp_Len : %d\n",
212 				    mbx_resp_hdr->response_length,
213 				    mbx_resp_hdr->actual_resp_len);
214 			rc = -EAGAIN;
215 		}
216 	}
217 
218 	return rc;
219 }
220 
221 /*
222  * beiscsi_mccq_compl_wait()- Process completion in MCC CQ
223  * @phba: Driver private structure
224  * @tag: Tag for the MBX Command
225  * @wrb: the WRB used for the MBX Command
226  * @mbx_cmd_mem: ptr to memory allocated for MBX Cmd
227  *
228  * Waits for MBX completion with the passed TAG.
229  *
230  * return
231  * Success: 0
232  * Failure: Non-Zero
233  **/
beiscsi_mccq_compl_wait(struct beiscsi_hba * phba,unsigned int tag,struct be_mcc_wrb ** wrb,struct be_dma_mem * mbx_cmd_mem)234 int beiscsi_mccq_compl_wait(struct beiscsi_hba *phba,
235 			    unsigned int tag,
236 			    struct be_mcc_wrb **wrb,
237 			    struct be_dma_mem *mbx_cmd_mem)
238 {
239 	int rc = 0;
240 
241 	if (!tag || tag > MAX_MCC_CMD) {
242 		__beiscsi_log(phba, KERN_ERR,
243 			      "BC_%d : invalid tag %u\n", tag);
244 		return -EINVAL;
245 	}
246 
247 	if (beiscsi_hba_in_error(phba)) {
248 		clear_bit(MCC_TAG_STATE_RUNNING,
249 			  &phba->ctrl.ptag_state[tag].tag_state);
250 		return -EIO;
251 	}
252 
253 	/* wait for the mccq completion */
254 	rc = wait_event_interruptible_timeout(phba->ctrl.mcc_wait[tag],
255 					      phba->ctrl.mcc_tag_status[tag],
256 					      msecs_to_jiffies(
257 						BEISCSI_HOST_MBX_TIMEOUT));
258 	/**
259 	 * Return EIO if port is being disabled. Associated DMA memory, if any,
260 	 * is freed by the caller. When port goes offline, MCCQ is cleaned up
261 	 * so does WRB.
262 	 */
263 	if (!test_bit(BEISCSI_HBA_ONLINE, &phba->state)) {
264 		clear_bit(MCC_TAG_STATE_RUNNING,
265 			  &phba->ctrl.ptag_state[tag].tag_state);
266 		return -EIO;
267 	}
268 
269 	/**
270 	 * If MBOX cmd timeout expired, tag and resource allocated
271 	 * for cmd is not freed until FW returns completion.
272 	 */
273 	if (rc <= 0) {
274 		struct be_dma_mem *tag_mem;
275 
276 		/**
277 		 * PCI/DMA memory allocated and posted in non-embedded mode
278 		 * will have mbx_cmd_mem != NULL.
279 		 * Save virtual and bus addresses for the command so that it
280 		 * can be freed later.
281 		 **/
282 		tag_mem = &phba->ctrl.ptag_state[tag].tag_mem_state;
283 		if (mbx_cmd_mem) {
284 			tag_mem->size = mbx_cmd_mem->size;
285 			tag_mem->va = mbx_cmd_mem->va;
286 			tag_mem->dma = mbx_cmd_mem->dma;
287 		} else
288 			tag_mem->size = 0;
289 
290 		/* first make tag_mem_state visible to all */
291 		wmb();
292 		set_bit(MCC_TAG_STATE_TIMEOUT,
293 				&phba->ctrl.ptag_state[tag].tag_state);
294 
295 		beiscsi_log(phba, KERN_ERR,
296 			    BEISCSI_LOG_INIT | BEISCSI_LOG_EH |
297 			    BEISCSI_LOG_CONFIG,
298 			    "BC_%d : MBX Cmd Completion timed out\n");
299 		return -EBUSY;
300 	}
301 
302 	rc = __beiscsi_mcc_compl_status(phba, tag, wrb, mbx_cmd_mem);
303 
304 	free_mcc_wrb(&phba->ctrl, tag);
305 	return rc;
306 }
307 
308 /*
309  * beiscsi_process_mbox_compl()- Check the MBX completion status
310  * @ctrl: Function specific MBX data structure
311  * @compl: Completion status of MBX Command
312  *
313  * Check for the MBX completion status when BMBX method used
314  *
315  * return
316  * Success: Zero
317  * Failure: Non-Zero
318  **/
beiscsi_process_mbox_compl(struct be_ctrl_info * ctrl,struct be_mcc_compl * compl)319 static int beiscsi_process_mbox_compl(struct be_ctrl_info *ctrl,
320 				      struct be_mcc_compl *compl)
321 {
322 	struct be_mcc_wrb *wrb = wrb_from_mbox(&ctrl->mbox_mem);
323 	struct beiscsi_hba *phba = pci_get_drvdata(ctrl->pdev);
324 	struct be_cmd_req_hdr *hdr = embedded_payload(wrb);
325 	u16 compl_status, extd_status;
326 
327 	/**
328 	 * To check if valid bit is set, check the entire word as we don't know
329 	 * the endianness of the data (old entry is host endian while a new
330 	 * entry is little endian)
331 	 */
332 	if (!compl->flags) {
333 		beiscsi_log(phba, KERN_ERR,
334 				BEISCSI_LOG_CONFIG | BEISCSI_LOG_MBOX,
335 				"BC_%d : BMBX busy, no completion\n");
336 		return -EBUSY;
337 	}
338 	compl->flags = le32_to_cpu(compl->flags);
339 	WARN_ON((compl->flags & CQE_FLAGS_VALID_MASK) == 0);
340 
341 	/**
342 	 * Just swap the status to host endian;
343 	 * mcc tag is opaquely copied from mcc_wrb.
344 	 */
345 	be_dws_le_to_cpu(compl, 4);
346 	compl_status = (compl->status >> CQE_STATUS_COMPL_SHIFT) &
347 		CQE_STATUS_COMPL_MASK;
348 	extd_status = (compl->status >> CQE_STATUS_EXTD_SHIFT) &
349 		CQE_STATUS_EXTD_MASK;
350 	/* Need to reset the entire word that houses the valid bit */
351 	compl->flags = 0;
352 
353 	if (compl_status == MCC_STATUS_SUCCESS)
354 		return 0;
355 
356 	beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG | BEISCSI_LOG_MBOX,
357 		    "BC_%d : error in cmd completion: Subsystem : %d Opcode : %d status(compl/extd)=%d/%d\n",
358 		    hdr->subsystem, hdr->opcode, compl_status, extd_status);
359 	return compl_status;
360 }
361 
beiscsi_process_async_link(struct beiscsi_hba * phba,struct be_mcc_compl * compl)362 static void beiscsi_process_async_link(struct beiscsi_hba *phba,
363 				       struct be_mcc_compl *compl)
364 {
365 	struct be_async_event_link_state *evt;
366 
367 	evt = (struct be_async_event_link_state *)compl;
368 
369 	phba->port_speed = evt->port_speed;
370 	/**
371 	 * Check logical link status in ASYNC event.
372 	 * This has been newly introduced in SKH-R Firmware 10.0.338.45.
373 	 **/
374 	if (evt->port_link_status & BE_ASYNC_LINK_UP_MASK) {
375 		set_bit(BEISCSI_HBA_LINK_UP, &phba->state);
376 		if (test_bit(BEISCSI_HBA_BOOT_FOUND, &phba->state))
377 			beiscsi_start_boot_work(phba, BE_BOOT_INVALID_SHANDLE);
378 		__beiscsi_log(phba, KERN_ERR,
379 			      "BC_%d : Link Up on Port %d tag 0x%x\n",
380 			      evt->physical_port, evt->event_tag);
381 	} else {
382 		clear_bit(BEISCSI_HBA_LINK_UP, &phba->state);
383 		__beiscsi_log(phba, KERN_ERR,
384 			      "BC_%d : Link Down on Port %d tag 0x%x\n",
385 			      evt->physical_port, evt->event_tag);
386 		iscsi_host_for_each_session(phba->shost,
387 					    beiscsi_session_fail);
388 	}
389 }
390 
391 static char *beiscsi_port_misconf_event_msg[] = {
392 	"Physical Link is functional.",
393 	"Optics faulted/incorrectly installed/not installed - Reseat optics, if issue not resolved, replace.",
394 	"Optics of two types installed - Remove one optic or install matching pair of optics.",
395 	"Incompatible optics - Replace with compatible optics for card to function.",
396 	"Unqualified optics - Replace with Avago optics for Warranty and Technical Support.",
397 	"Uncertified optics - Replace with Avago Certified optics to enable link operation."
398 };
399 
beiscsi_process_async_sli(struct beiscsi_hba * phba,struct be_mcc_compl * compl)400 static void beiscsi_process_async_sli(struct beiscsi_hba *phba,
401 				      struct be_mcc_compl *compl)
402 {
403 	struct be_async_event_sli *async_sli;
404 	u8 evt_type, state, old_state, le;
405 	char *sev = KERN_WARNING;
406 	char *msg = NULL;
407 
408 	evt_type = compl->flags >> ASYNC_TRAILER_EVENT_TYPE_SHIFT;
409 	evt_type &= ASYNC_TRAILER_EVENT_TYPE_MASK;
410 
411 	/* processing only MISCONFIGURED physical port event */
412 	if (evt_type != ASYNC_SLI_EVENT_TYPE_MISCONFIGURED)
413 		return;
414 
415 	async_sli = (struct be_async_event_sli *)compl;
416 	state = async_sli->event_data1 >>
417 		 (phba->fw_config.phys_port * 8) & 0xff;
418 	le = async_sli->event_data2 >>
419 		 (phba->fw_config.phys_port * 8) & 0xff;
420 
421 	old_state = phba->optic_state;
422 	phba->optic_state = state;
423 
424 	if (state >= ARRAY_SIZE(beiscsi_port_misconf_event_msg)) {
425 		/* fw is reporting a state we don't know, log and return */
426 		__beiscsi_log(phba, KERN_ERR,
427 			    "BC_%d : Port %c: Unrecognized optic state 0x%x\n",
428 			    phba->port_name, async_sli->event_data1);
429 		return;
430 	}
431 
432 	if (ASYNC_SLI_LINK_EFFECT_VALID(le)) {
433 		/* log link effect for unqualified-4, uncertified-5 optics */
434 		if (state > 3)
435 			msg = (ASYNC_SLI_LINK_EFFECT_STATE(le)) ?
436 				" Link is non-operational." :
437 				" Link is operational.";
438 		/* 1 - info */
439 		if (ASYNC_SLI_LINK_EFFECT_SEV(le) == 1)
440 			sev = KERN_INFO;
441 		/* 2 - error */
442 		if (ASYNC_SLI_LINK_EFFECT_SEV(le) == 2)
443 			sev = KERN_ERR;
444 	}
445 
446 	if (old_state != phba->optic_state)
447 		__beiscsi_log(phba, sev, "BC_%d : Port %c: %s%s\n",
448 			      phba->port_name,
449 			      beiscsi_port_misconf_event_msg[state],
450 			      !msg ? "" : msg);
451 }
452 
beiscsi_process_async_event(struct beiscsi_hba * phba,struct be_mcc_compl * compl)453 void beiscsi_process_async_event(struct beiscsi_hba *phba,
454 				struct be_mcc_compl *compl)
455 {
456 	char *sev = KERN_INFO;
457 	u8 evt_code;
458 
459 	/* interpret flags as an async trailer */
460 	evt_code = compl->flags >> ASYNC_TRAILER_EVENT_CODE_SHIFT;
461 	evt_code &= ASYNC_TRAILER_EVENT_CODE_MASK;
462 	switch (evt_code) {
463 	case ASYNC_EVENT_CODE_LINK_STATE:
464 		beiscsi_process_async_link(phba, compl);
465 		break;
466 	case ASYNC_EVENT_CODE_ISCSI:
467 		if (test_bit(BEISCSI_HBA_BOOT_FOUND, &phba->state))
468 			beiscsi_start_boot_work(phba, BE_BOOT_INVALID_SHANDLE);
469 		sev = KERN_ERR;
470 		break;
471 	case ASYNC_EVENT_CODE_SLI:
472 		beiscsi_process_async_sli(phba, compl);
473 		break;
474 	default:
475 		/* event not registered */
476 		sev = KERN_ERR;
477 	}
478 
479 	beiscsi_log(phba, sev, BEISCSI_LOG_CONFIG | BEISCSI_LOG_MBOX,
480 		    "BC_%d : ASYNC Event %x: status 0x%08x flags 0x%08x\n",
481 		    evt_code, compl->status, compl->flags);
482 }
483 
beiscsi_process_mcc_compl(struct be_ctrl_info * ctrl,struct be_mcc_compl * compl)484 int beiscsi_process_mcc_compl(struct be_ctrl_info *ctrl,
485 			      struct be_mcc_compl *compl)
486 {
487 	struct beiscsi_hba *phba = pci_get_drvdata(ctrl->pdev);
488 	u16 compl_status, extd_status;
489 	struct be_dma_mem *tag_mem;
490 	unsigned int tag, wrb_idx;
491 
492 	be_dws_le_to_cpu(compl, 4);
493 	tag = (compl->tag0 & MCC_Q_CMD_TAG_MASK);
494 	wrb_idx = (compl->tag0 & CQE_STATUS_WRB_MASK) >> CQE_STATUS_WRB_SHIFT;
495 
496 	if (!test_bit(MCC_TAG_STATE_RUNNING,
497 		      &ctrl->ptag_state[tag].tag_state)) {
498 		beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_MBOX |
499 			    BEISCSI_LOG_INIT | BEISCSI_LOG_CONFIG,
500 			    "BC_%d : MBX cmd completed but not posted\n");
501 		return 0;
502 	}
503 
504 	/* end MCC with this tag */
505 	clear_bit(MCC_TAG_STATE_RUNNING, &ctrl->ptag_state[tag].tag_state);
506 
507 	if (test_bit(MCC_TAG_STATE_TIMEOUT, &ctrl->ptag_state[tag].tag_state)) {
508 		beiscsi_log(phba, KERN_WARNING,
509 			    BEISCSI_LOG_MBOX | BEISCSI_LOG_INIT |
510 			    BEISCSI_LOG_CONFIG,
511 			    "BC_%d : MBX Completion for timeout Command from FW\n");
512 		/**
513 		 * Check for the size before freeing resource.
514 		 * Only for non-embedded cmd, PCI resource is allocated.
515 		 **/
516 		tag_mem = &ctrl->ptag_state[tag].tag_mem_state;
517 		if (tag_mem->size) {
518 			dma_free_coherent(&ctrl->pdev->dev, tag_mem->size,
519 					tag_mem->va, tag_mem->dma);
520 			tag_mem->size = 0;
521 		}
522 		free_mcc_wrb(ctrl, tag);
523 		return 0;
524 	}
525 
526 	compl_status = (compl->status >> CQE_STATUS_COMPL_SHIFT) &
527 		       CQE_STATUS_COMPL_MASK;
528 	extd_status = (compl->status >> CQE_STATUS_EXTD_SHIFT) &
529 		      CQE_STATUS_EXTD_MASK;
530 	/* The ctrl.mcc_tag_status[tag] is filled with
531 	 * [31] = valid, [30:24] = Rsvd, [23:16] = wrb, [15:8] = extd_status,
532 	 * [7:0] = compl_status
533 	 */
534 	ctrl->mcc_tag_status[tag] = CQE_VALID_MASK;
535 	ctrl->mcc_tag_status[tag] |= (wrb_idx << CQE_STATUS_WRB_SHIFT);
536 	ctrl->mcc_tag_status[tag] |= (extd_status << CQE_STATUS_ADDL_SHIFT) &
537 				     CQE_STATUS_ADDL_MASK;
538 	ctrl->mcc_tag_status[tag] |= (compl_status & CQE_STATUS_MASK);
539 
540 	if (test_bit(MCC_TAG_STATE_ASYNC, &ctrl->ptag_state[tag].tag_state)) {
541 		if (ctrl->ptag_state[tag].cbfn)
542 			ctrl->ptag_state[tag].cbfn(phba, tag);
543 		else
544 			__beiscsi_log(phba, KERN_ERR,
545 				      "BC_%d : MBX ASYNC command with no callback\n");
546 		free_mcc_wrb(ctrl, tag);
547 		return 0;
548 	}
549 
550 	if (test_bit(MCC_TAG_STATE_IGNORE, &ctrl->ptag_state[tag].tag_state)) {
551 		/* just check completion status and free wrb */
552 		__beiscsi_mcc_compl_status(phba, tag, NULL, NULL);
553 		free_mcc_wrb(ctrl, tag);
554 		return 0;
555 	}
556 
557 	wake_up_interruptible(&ctrl->mcc_wait[tag]);
558 	return 0;
559 }
560 
be_mcc_notify(struct beiscsi_hba * phba,unsigned int tag)561 void be_mcc_notify(struct beiscsi_hba *phba, unsigned int tag)
562 {
563 	struct be_queue_info *mccq = &phba->ctrl.mcc_obj.q;
564 	u32 val = 0;
565 
566 	set_bit(MCC_TAG_STATE_RUNNING, &phba->ctrl.ptag_state[tag].tag_state);
567 	val |= mccq->id & DB_MCCQ_RING_ID_MASK;
568 	val |= 1 << DB_MCCQ_NUM_POSTED_SHIFT;
569 	/* make request available for DMA */
570 	wmb();
571 	iowrite32(val, phba->db_va + DB_MCCQ_OFFSET);
572 }
573 
574 /*
575  * be_mbox_db_ready_poll()- Check ready status
576  * @ctrl: Function specific MBX data structure
577  *
578  * Check for the ready status of FW to send BMBX
579  * commands to adapter.
580  *
581  * return
582  * Success: 0
583  * Failure: Non-Zero
584  **/
be_mbox_db_ready_poll(struct be_ctrl_info * ctrl)585 static int be_mbox_db_ready_poll(struct be_ctrl_info *ctrl)
586 {
587 	/* wait 30s for generic non-flash MBOX operation */
588 #define BEISCSI_MBX_RDY_BIT_TIMEOUT	30000
589 	void __iomem *db = ctrl->db + MPU_MAILBOX_DB_OFFSET;
590 	struct beiscsi_hba *phba = pci_get_drvdata(ctrl->pdev);
591 	unsigned long timeout;
592 	u32 ready;
593 
594 	/*
595 	 * This BMBX busy wait path is used during init only.
596 	 * For the commands executed during init, 5s should suffice.
597 	 */
598 	timeout = jiffies + msecs_to_jiffies(BEISCSI_MBX_RDY_BIT_TIMEOUT);
599 	do {
600 		if (beiscsi_hba_in_error(phba))
601 			return -EIO;
602 
603 		ready = ioread32(db);
604 		if (ready == 0xffffffff)
605 			return -EIO;
606 
607 		ready &= MPU_MAILBOX_DB_RDY_MASK;
608 		if (ready)
609 			return 0;
610 
611 		if (time_after(jiffies, timeout))
612 			break;
613 		/* 1ms sleep is enough in most cases */
614 		schedule_timeout_uninterruptible(msecs_to_jiffies(1));
615 	} while (!ready);
616 
617 	beiscsi_log(phba, KERN_ERR,
618 			BEISCSI_LOG_CONFIG | BEISCSI_LOG_MBOX,
619 			"BC_%d : FW Timed Out\n");
620 	set_bit(BEISCSI_HBA_FW_TIMEOUT, &phba->state);
621 	return -EBUSY;
622 }
623 
624 /*
625  * be_mbox_notify: Notify adapter of new BMBX command
626  * @ctrl: Function specific MBX data structure
627  *
628  * Ring doorbell to inform adapter of a BMBX command
629  * to process
630  *
631  * return
632  * Success: 0
633  * Failure: Non-Zero
634  **/
be_mbox_notify(struct be_ctrl_info * ctrl)635 static int be_mbox_notify(struct be_ctrl_info *ctrl)
636 {
637 	int status;
638 	u32 val = 0;
639 	void __iomem *db = ctrl->db + MPU_MAILBOX_DB_OFFSET;
640 	struct be_dma_mem *mbox_mem = &ctrl->mbox_mem;
641 	struct be_mcc_mailbox *mbox = mbox_mem->va;
642 
643 	status = be_mbox_db_ready_poll(ctrl);
644 	if (status)
645 		return status;
646 
647 	val &= ~MPU_MAILBOX_DB_RDY_MASK;
648 	val |= MPU_MAILBOX_DB_HI_MASK;
649 	val |= (upper_32_bits(mbox_mem->dma) >> 2) << 2;
650 	iowrite32(val, db);
651 
652 	status = be_mbox_db_ready_poll(ctrl);
653 	if (status)
654 		return status;
655 
656 	val = 0;
657 	val &= ~MPU_MAILBOX_DB_RDY_MASK;
658 	val &= ~MPU_MAILBOX_DB_HI_MASK;
659 	val |= (u32) (mbox_mem->dma >> 4) << 2;
660 	iowrite32(val, db);
661 
662 	status = be_mbox_db_ready_poll(ctrl);
663 	if (status)
664 		return status;
665 
666 	/* RDY is set; small delay before CQE read. */
667 	udelay(1);
668 
669 	status = beiscsi_process_mbox_compl(ctrl, &mbox->compl);
670 	return status;
671 }
672 
be_wrb_hdr_prepare(struct be_mcc_wrb * wrb,u32 payload_len,bool embedded,u8 sge_cnt)673 void be_wrb_hdr_prepare(struct be_mcc_wrb *wrb, u32 payload_len,
674 			bool embedded, u8 sge_cnt)
675 {
676 	if (embedded)
677 		wrb->emb_sgecnt_special |= MCC_WRB_EMBEDDED_MASK;
678 	else
679 		wrb->emb_sgecnt_special |= (sge_cnt & MCC_WRB_SGE_CNT_MASK) <<
680 					   MCC_WRB_SGE_CNT_SHIFT;
681 	wrb->payload_length = payload_len;
682 	be_dws_cpu_to_le(wrb, 8);
683 }
684 
be_cmd_hdr_prepare(struct be_cmd_req_hdr * req_hdr,u8 subsystem,u8 opcode,u32 cmd_len)685 void be_cmd_hdr_prepare(struct be_cmd_req_hdr *req_hdr,
686 			u8 subsystem, u8 opcode, u32 cmd_len)
687 {
688 	req_hdr->opcode = opcode;
689 	req_hdr->subsystem = subsystem;
690 	req_hdr->request_length = cpu_to_le32(cmd_len - sizeof(*req_hdr));
691 	req_hdr->timeout = BEISCSI_FW_MBX_TIMEOUT;
692 }
693 
be_cmd_page_addrs_prepare(struct phys_addr * pages,u32 max_pages,struct be_dma_mem * mem)694 static void be_cmd_page_addrs_prepare(struct phys_addr *pages, u32 max_pages,
695 							struct be_dma_mem *mem)
696 {
697 	int i, buf_pages;
698 	u64 dma = (u64) mem->dma;
699 
700 	buf_pages = min(PAGES_4K_SPANNED(mem->va, mem->size), max_pages);
701 	for (i = 0; i < buf_pages; i++) {
702 		pages[i].lo = cpu_to_le32(dma & 0xFFFFFFFF);
703 		pages[i].hi = cpu_to_le32(upper_32_bits(dma));
704 		dma += PAGE_SIZE_4K;
705 	}
706 }
707 
eq_delay_to_mult(u32 usec_delay)708 static u32 eq_delay_to_mult(u32 usec_delay)
709 {
710 #define MAX_INTR_RATE 651042
711 	const u32 round = 10;
712 	u32 multiplier;
713 
714 	if (usec_delay == 0)
715 		multiplier = 0;
716 	else {
717 		u32 interrupt_rate = 1000000 / usec_delay;
718 		if (interrupt_rate == 0)
719 			multiplier = 1023;
720 		else {
721 			multiplier = (MAX_INTR_RATE - interrupt_rate) * round;
722 			multiplier /= interrupt_rate;
723 			multiplier = (multiplier + round / 2) / round;
724 			multiplier = min(multiplier, (u32) 1023);
725 		}
726 	}
727 	return multiplier;
728 }
729 
wrb_from_mbox(struct be_dma_mem * mbox_mem)730 struct be_mcc_wrb *wrb_from_mbox(struct be_dma_mem *mbox_mem)
731 {
732 	return &((struct be_mcc_mailbox *)(mbox_mem->va))->wrb;
733 }
734 
beiscsi_cmd_eq_create(struct be_ctrl_info * ctrl,struct be_queue_info * eq,int eq_delay)735 int beiscsi_cmd_eq_create(struct be_ctrl_info *ctrl,
736 			  struct be_queue_info *eq, int eq_delay)
737 {
738 	struct be_mcc_wrb *wrb = wrb_from_mbox(&ctrl->mbox_mem);
739 	struct be_cmd_req_eq_create *req = embedded_payload(wrb);
740 	struct be_cmd_resp_eq_create *resp = embedded_payload(wrb);
741 	struct be_dma_mem *q_mem = &eq->dma_mem;
742 	int status;
743 
744 	mutex_lock(&ctrl->mbox_lock);
745 	memset(wrb, 0, sizeof(*wrb));
746 
747 	be_wrb_hdr_prepare(wrb, sizeof(*req), true, 0);
748 
749 	be_cmd_hdr_prepare(&req->hdr, CMD_SUBSYSTEM_COMMON,
750 			OPCODE_COMMON_EQ_CREATE, sizeof(*req));
751 
752 	req->num_pages = cpu_to_le16(PAGES_4K_SPANNED(q_mem->va, q_mem->size));
753 
754 	AMAP_SET_BITS(struct amap_eq_context, func, req->context,
755 						PCI_FUNC(ctrl->pdev->devfn));
756 	AMAP_SET_BITS(struct amap_eq_context, valid, req->context, 1);
757 	AMAP_SET_BITS(struct amap_eq_context, size, req->context, 0);
758 	AMAP_SET_BITS(struct amap_eq_context, count, req->context,
759 					__ilog2_u32(eq->len / 256));
760 	AMAP_SET_BITS(struct amap_eq_context, delaymult, req->context,
761 					eq_delay_to_mult(eq_delay));
762 	be_dws_cpu_to_le(req->context, sizeof(req->context));
763 
764 	be_cmd_page_addrs_prepare(req->pages, ARRAY_SIZE(req->pages), q_mem);
765 
766 	status = be_mbox_notify(ctrl);
767 	if (!status) {
768 		eq->id = le16_to_cpu(resp->eq_id);
769 		eq->created = true;
770 	}
771 	mutex_unlock(&ctrl->mbox_lock);
772 	return status;
773 }
774 
beiscsi_cmd_cq_create(struct be_ctrl_info * ctrl,struct be_queue_info * cq,struct be_queue_info * eq,bool sol_evts,bool no_delay,int coalesce_wm)775 int beiscsi_cmd_cq_create(struct be_ctrl_info *ctrl,
776 			  struct be_queue_info *cq, struct be_queue_info *eq,
777 			  bool sol_evts, bool no_delay, int coalesce_wm)
778 {
779 	struct be_mcc_wrb *wrb = wrb_from_mbox(&ctrl->mbox_mem);
780 	struct be_cmd_req_cq_create *req = embedded_payload(wrb);
781 	struct be_cmd_resp_cq_create *resp = embedded_payload(wrb);
782 	struct beiscsi_hba *phba = pci_get_drvdata(ctrl->pdev);
783 	struct be_dma_mem *q_mem = &cq->dma_mem;
784 	void *ctxt = &req->context;
785 	int status;
786 
787 	mutex_lock(&ctrl->mbox_lock);
788 	memset(wrb, 0, sizeof(*wrb));
789 
790 	be_wrb_hdr_prepare(wrb, sizeof(*req), true, 0);
791 
792 	be_cmd_hdr_prepare(&req->hdr, CMD_SUBSYSTEM_COMMON,
793 			OPCODE_COMMON_CQ_CREATE, sizeof(*req));
794 
795 	req->num_pages = cpu_to_le16(PAGES_4K_SPANNED(q_mem->va, q_mem->size));
796 	if (is_chip_be2_be3r(phba)) {
797 		AMAP_SET_BITS(struct amap_cq_context, coalescwm,
798 			      ctxt, coalesce_wm);
799 		AMAP_SET_BITS(struct amap_cq_context, nodelay, ctxt, no_delay);
800 		AMAP_SET_BITS(struct amap_cq_context, count, ctxt,
801 			      __ilog2_u32(cq->len / 256));
802 		AMAP_SET_BITS(struct amap_cq_context, valid, ctxt, 1);
803 		AMAP_SET_BITS(struct amap_cq_context, solevent, ctxt, sol_evts);
804 		AMAP_SET_BITS(struct amap_cq_context, eventable, ctxt, 1);
805 		AMAP_SET_BITS(struct amap_cq_context, eqid, ctxt, eq->id);
806 		AMAP_SET_BITS(struct amap_cq_context, armed, ctxt, 1);
807 		AMAP_SET_BITS(struct amap_cq_context, func, ctxt,
808 			      PCI_FUNC(ctrl->pdev->devfn));
809 	} else {
810 		req->hdr.version = MBX_CMD_VER2;
811 		req->page_size = 1;
812 		AMAP_SET_BITS(struct amap_cq_context_v2, coalescwm,
813 			      ctxt, coalesce_wm);
814 		AMAP_SET_BITS(struct amap_cq_context_v2, nodelay,
815 			      ctxt, no_delay);
816 		AMAP_SET_BITS(struct amap_cq_context_v2, count, ctxt,
817 			      __ilog2_u32(cq->len / 256));
818 		AMAP_SET_BITS(struct amap_cq_context_v2, valid, ctxt, 1);
819 		AMAP_SET_BITS(struct amap_cq_context_v2, eventable, ctxt, 1);
820 		AMAP_SET_BITS(struct amap_cq_context_v2, eqid, ctxt, eq->id);
821 		AMAP_SET_BITS(struct amap_cq_context_v2, armed, ctxt, 1);
822 	}
823 
824 	be_dws_cpu_to_le(ctxt, sizeof(req->context));
825 
826 	be_cmd_page_addrs_prepare(req->pages, ARRAY_SIZE(req->pages), q_mem);
827 
828 	status = be_mbox_notify(ctrl);
829 	if (!status) {
830 		cq->id = le16_to_cpu(resp->cq_id);
831 		cq->created = true;
832 	} else
833 		beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
834 			    "BC_%d : In be_cmd_cq_create, status=ox%08x\n",
835 			    status);
836 
837 	mutex_unlock(&ctrl->mbox_lock);
838 
839 	return status;
840 }
841 
be_encoded_q_len(int q_len)842 static u32 be_encoded_q_len(int q_len)
843 {
844 	u32 len_encoded = fls(q_len);	/* log2(len) + 1 */
845 	if (len_encoded == 16)
846 		len_encoded = 0;
847 	return len_encoded;
848 }
849 
beiscsi_cmd_mccq_create(struct beiscsi_hba * phba,struct be_queue_info * mccq,struct be_queue_info * cq)850 int beiscsi_cmd_mccq_create(struct beiscsi_hba *phba,
851 			struct be_queue_info *mccq,
852 			struct be_queue_info *cq)
853 {
854 	struct be_mcc_wrb *wrb;
855 	struct be_cmd_req_mcc_create_ext *req;
856 	struct be_dma_mem *q_mem = &mccq->dma_mem;
857 	struct be_ctrl_info *ctrl;
858 	void *ctxt;
859 	int status;
860 
861 	mutex_lock(&phba->ctrl.mbox_lock);
862 	ctrl = &phba->ctrl;
863 	wrb = wrb_from_mbox(&ctrl->mbox_mem);
864 	memset(wrb, 0, sizeof(*wrb));
865 	req = embedded_payload(wrb);
866 	ctxt = &req->context;
867 
868 	be_wrb_hdr_prepare(wrb, sizeof(*req), true, 0);
869 
870 	be_cmd_hdr_prepare(&req->hdr, CMD_SUBSYSTEM_COMMON,
871 			OPCODE_COMMON_MCC_CREATE_EXT, sizeof(*req));
872 
873 	req->num_pages = PAGES_4K_SPANNED(q_mem->va, q_mem->size);
874 	req->async_evt_bitmap = 1 << ASYNC_EVENT_CODE_LINK_STATE;
875 	req->async_evt_bitmap |= 1 << ASYNC_EVENT_CODE_ISCSI;
876 	req->async_evt_bitmap |= 1 << ASYNC_EVENT_CODE_SLI;
877 
878 	AMAP_SET_BITS(struct amap_mcc_context, fid, ctxt,
879 		      PCI_FUNC(phba->pcidev->devfn));
880 	AMAP_SET_BITS(struct amap_mcc_context, valid, ctxt, 1);
881 	AMAP_SET_BITS(struct amap_mcc_context, ring_size, ctxt,
882 		be_encoded_q_len(mccq->len));
883 	AMAP_SET_BITS(struct amap_mcc_context, cq_id, ctxt, cq->id);
884 
885 	be_dws_cpu_to_le(ctxt, sizeof(req->context));
886 
887 	be_cmd_page_addrs_prepare(req->pages, ARRAY_SIZE(req->pages), q_mem);
888 
889 	status = be_mbox_notify(ctrl);
890 	if (!status) {
891 		struct be_cmd_resp_mcc_create *resp = embedded_payload(wrb);
892 		mccq->id = le16_to_cpu(resp->id);
893 		mccq->created = true;
894 	}
895 	mutex_unlock(&phba->ctrl.mbox_lock);
896 
897 	return status;
898 }
899 
beiscsi_cmd_q_destroy(struct be_ctrl_info * ctrl,struct be_queue_info * q,int queue_type)900 int beiscsi_cmd_q_destroy(struct be_ctrl_info *ctrl, struct be_queue_info *q,
901 			  int queue_type)
902 {
903 	struct be_mcc_wrb *wrb = wrb_from_mbox(&ctrl->mbox_mem);
904 	struct be_cmd_req_q_destroy *req = embedded_payload(wrb);
905 	struct beiscsi_hba *phba = pci_get_drvdata(ctrl->pdev);
906 	u8 subsys = 0, opcode = 0;
907 	int status;
908 
909 	beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
910 		    "BC_%d : In beiscsi_cmd_q_destroy "
911 		    "queue_type : %d\n", queue_type);
912 
913 	mutex_lock(&ctrl->mbox_lock);
914 	memset(wrb, 0, sizeof(*wrb));
915 	be_wrb_hdr_prepare(wrb, sizeof(*req), true, 0);
916 
917 	switch (queue_type) {
918 	case QTYPE_EQ:
919 		subsys = CMD_SUBSYSTEM_COMMON;
920 		opcode = OPCODE_COMMON_EQ_DESTROY;
921 		break;
922 	case QTYPE_CQ:
923 		subsys = CMD_SUBSYSTEM_COMMON;
924 		opcode = OPCODE_COMMON_CQ_DESTROY;
925 		break;
926 	case QTYPE_MCCQ:
927 		subsys = CMD_SUBSYSTEM_COMMON;
928 		opcode = OPCODE_COMMON_MCC_DESTROY;
929 		break;
930 	case QTYPE_WRBQ:
931 		subsys = CMD_SUBSYSTEM_ISCSI;
932 		opcode = OPCODE_COMMON_ISCSI_WRBQ_DESTROY;
933 		break;
934 	case QTYPE_DPDUQ:
935 		subsys = CMD_SUBSYSTEM_ISCSI;
936 		opcode = OPCODE_COMMON_ISCSI_DEFQ_DESTROY;
937 		break;
938 	case QTYPE_SGL:
939 		subsys = CMD_SUBSYSTEM_ISCSI;
940 		opcode = OPCODE_COMMON_ISCSI_CFG_REMOVE_SGL_PAGES;
941 		break;
942 	default:
943 		mutex_unlock(&ctrl->mbox_lock);
944 		BUG();
945 	}
946 	be_cmd_hdr_prepare(&req->hdr, subsys, opcode, sizeof(*req));
947 	if (queue_type != QTYPE_SGL)
948 		req->id = cpu_to_le16(q->id);
949 
950 	status = be_mbox_notify(ctrl);
951 
952 	mutex_unlock(&ctrl->mbox_lock);
953 	return status;
954 }
955 
956 /**
957  * be_cmd_create_default_pdu_queue()- Create DEFQ for the adapter
958  * @ctrl: ptr to ctrl_info
959  * @cq: Completion Queue
960  * @dq: Default Queue
961  * @length: ring size
962  * @entry_size: size of each entry in DEFQ
963  * @is_header: Header or Data DEFQ
964  * @ulp_num: Bind to which ULP
965  *
966  * Create HDR/Data DEFQ for the passed ULP. Unsol PDU are posted
967  * on this queue by the FW
968  *
969  * return
970  *	Success: 0
971  *	Failure: Non-Zero Value
972  *
973  **/
be_cmd_create_default_pdu_queue(struct be_ctrl_info * ctrl,struct be_queue_info * cq,struct be_queue_info * dq,int length,int entry_size,uint8_t is_header,uint8_t ulp_num)974 int be_cmd_create_default_pdu_queue(struct be_ctrl_info *ctrl,
975 				    struct be_queue_info *cq,
976 				    struct be_queue_info *dq, int length,
977 				    int entry_size, uint8_t is_header,
978 				    uint8_t ulp_num)
979 {
980 	struct be_mcc_wrb *wrb = wrb_from_mbox(&ctrl->mbox_mem);
981 	struct be_defq_create_req *req = embedded_payload(wrb);
982 	struct be_dma_mem *q_mem = &dq->dma_mem;
983 	struct beiscsi_hba *phba = pci_get_drvdata(ctrl->pdev);
984 	void *ctxt = &req->context;
985 	int status;
986 
987 	mutex_lock(&ctrl->mbox_lock);
988 	memset(wrb, 0, sizeof(*wrb));
989 
990 	be_wrb_hdr_prepare(wrb, sizeof(*req), true, 0);
991 
992 	be_cmd_hdr_prepare(&req->hdr, CMD_SUBSYSTEM_ISCSI,
993 			   OPCODE_COMMON_ISCSI_DEFQ_CREATE, sizeof(*req));
994 
995 	req->num_pages = PAGES_4K_SPANNED(q_mem->va, q_mem->size);
996 	if (phba->fw_config.dual_ulp_aware) {
997 		req->ulp_num = ulp_num;
998 		req->dua_feature |= (1 << BEISCSI_DUAL_ULP_AWARE_BIT);
999 		req->dua_feature |= (1 << BEISCSI_BIND_Q_TO_ULP_BIT);
1000 	}
1001 
1002 	if (is_chip_be2_be3r(phba)) {
1003 		AMAP_SET_BITS(struct amap_be_default_pdu_context,
1004 			      rx_pdid, ctxt, 0);
1005 		AMAP_SET_BITS(struct amap_be_default_pdu_context,
1006 			      rx_pdid_valid, ctxt, 1);
1007 		AMAP_SET_BITS(struct amap_be_default_pdu_context,
1008 			      pci_func_id, ctxt, PCI_FUNC(ctrl->pdev->devfn));
1009 		AMAP_SET_BITS(struct amap_be_default_pdu_context,
1010 			      ring_size, ctxt,
1011 			      be_encoded_q_len(length /
1012 			      sizeof(struct phys_addr)));
1013 		AMAP_SET_BITS(struct amap_be_default_pdu_context,
1014 			      default_buffer_size, ctxt, entry_size);
1015 		AMAP_SET_BITS(struct amap_be_default_pdu_context,
1016 			      cq_id_recv, ctxt,	cq->id);
1017 	} else {
1018 		AMAP_SET_BITS(struct amap_default_pdu_context_ext,
1019 			      rx_pdid, ctxt, 0);
1020 		AMAP_SET_BITS(struct amap_default_pdu_context_ext,
1021 			      rx_pdid_valid, ctxt, 1);
1022 		AMAP_SET_BITS(struct amap_default_pdu_context_ext,
1023 			      ring_size, ctxt,
1024 			      be_encoded_q_len(length /
1025 			      sizeof(struct phys_addr)));
1026 		AMAP_SET_BITS(struct amap_default_pdu_context_ext,
1027 			      default_buffer_size, ctxt, entry_size);
1028 		AMAP_SET_BITS(struct amap_default_pdu_context_ext,
1029 			      cq_id_recv, ctxt, cq->id);
1030 	}
1031 
1032 	be_dws_cpu_to_le(ctxt, sizeof(req->context));
1033 
1034 	be_cmd_page_addrs_prepare(req->pages, ARRAY_SIZE(req->pages), q_mem);
1035 
1036 	status = be_mbox_notify(ctrl);
1037 	if (!status) {
1038 		struct be_ring *defq_ring;
1039 		struct be_defq_create_resp *resp = embedded_payload(wrb);
1040 
1041 		dq->id = le16_to_cpu(resp->id);
1042 		dq->created = true;
1043 		if (is_header)
1044 			defq_ring = &phba->phwi_ctrlr->default_pdu_hdr[ulp_num];
1045 		else
1046 			defq_ring = &phba->phwi_ctrlr->
1047 				    default_pdu_data[ulp_num];
1048 
1049 		defq_ring->id = dq->id;
1050 
1051 		if (!phba->fw_config.dual_ulp_aware) {
1052 			defq_ring->ulp_num = BEISCSI_ULP0;
1053 			defq_ring->doorbell_offset = DB_RXULP0_OFFSET;
1054 		} else {
1055 			defq_ring->ulp_num = resp->ulp_num;
1056 			defq_ring->doorbell_offset = resp->doorbell_offset;
1057 		}
1058 	}
1059 	mutex_unlock(&ctrl->mbox_lock);
1060 
1061 	return status;
1062 }
1063 
1064 /**
1065  * be_cmd_wrbq_create()- Create WRBQ
1066  * @ctrl: ptr to ctrl_info
1067  * @q_mem: memory details for the queue
1068  * @wrbq: queue info
1069  * @pwrb_context: ptr to wrb_context
1070  * @ulp_num: ULP on which the WRBQ is to be created
1071  *
1072  * Create WRBQ on the passed ULP_NUM.
1073  *
1074  **/
be_cmd_wrbq_create(struct be_ctrl_info * ctrl,struct be_dma_mem * q_mem,struct be_queue_info * wrbq,struct hwi_wrb_context * pwrb_context,uint8_t ulp_num)1075 int be_cmd_wrbq_create(struct be_ctrl_info *ctrl,
1076 			struct be_dma_mem *q_mem,
1077 			struct be_queue_info *wrbq,
1078 			struct hwi_wrb_context *pwrb_context,
1079 			uint8_t ulp_num)
1080 {
1081 	struct be_mcc_wrb *wrb = wrb_from_mbox(&ctrl->mbox_mem);
1082 	struct be_wrbq_create_req *req = embedded_payload(wrb);
1083 	struct be_wrbq_create_resp *resp = embedded_payload(wrb);
1084 	struct beiscsi_hba *phba = pci_get_drvdata(ctrl->pdev);
1085 	int status;
1086 
1087 	mutex_lock(&ctrl->mbox_lock);
1088 	memset(wrb, 0, sizeof(*wrb));
1089 
1090 	be_wrb_hdr_prepare(wrb, sizeof(*req), true, 0);
1091 
1092 	be_cmd_hdr_prepare(&req->hdr, CMD_SUBSYSTEM_ISCSI,
1093 		OPCODE_COMMON_ISCSI_WRBQ_CREATE, sizeof(*req));
1094 	req->num_pages = PAGES_4K_SPANNED(q_mem->va, q_mem->size);
1095 
1096 	if (phba->fw_config.dual_ulp_aware) {
1097 		req->ulp_num = ulp_num;
1098 		req->dua_feature |= (1 << BEISCSI_DUAL_ULP_AWARE_BIT);
1099 		req->dua_feature |= (1 << BEISCSI_BIND_Q_TO_ULP_BIT);
1100 	}
1101 
1102 	be_cmd_page_addrs_prepare(req->pages, ARRAY_SIZE(req->pages), q_mem);
1103 
1104 	status = be_mbox_notify(ctrl);
1105 	if (!status) {
1106 		wrbq->id = le16_to_cpu(resp->cid);
1107 		wrbq->created = true;
1108 
1109 		pwrb_context->cid = wrbq->id;
1110 		if (!phba->fw_config.dual_ulp_aware) {
1111 			pwrb_context->doorbell_offset = DB_TXULP0_OFFSET;
1112 			pwrb_context->ulp_num = BEISCSI_ULP0;
1113 		} else {
1114 			pwrb_context->ulp_num = resp->ulp_num;
1115 			pwrb_context->doorbell_offset = resp->doorbell_offset;
1116 		}
1117 	}
1118 	mutex_unlock(&ctrl->mbox_lock);
1119 	return status;
1120 }
1121 
be_cmd_iscsi_post_template_hdr(struct be_ctrl_info * ctrl,struct be_dma_mem * q_mem)1122 int be_cmd_iscsi_post_template_hdr(struct be_ctrl_info *ctrl,
1123 				    struct be_dma_mem *q_mem)
1124 {
1125 	struct be_mcc_wrb *wrb = wrb_from_mbox(&ctrl->mbox_mem);
1126 	struct be_post_template_pages_req *req = embedded_payload(wrb);
1127 	int status;
1128 
1129 	mutex_lock(&ctrl->mbox_lock);
1130 
1131 	memset(wrb, 0, sizeof(*wrb));
1132 	be_wrb_hdr_prepare(wrb, sizeof(*req), true, 0);
1133 	be_cmd_hdr_prepare(&req->hdr, CMD_SUBSYSTEM_COMMON,
1134 			   OPCODE_COMMON_ADD_TEMPLATE_HEADER_BUFFERS,
1135 			   sizeof(*req));
1136 
1137 	req->num_pages = PAGES_4K_SPANNED(q_mem->va, q_mem->size);
1138 	req->type = BEISCSI_TEMPLATE_HDR_TYPE_ISCSI;
1139 	be_cmd_page_addrs_prepare(req->pages, ARRAY_SIZE(req->pages), q_mem);
1140 
1141 	status = be_mbox_notify(ctrl);
1142 	mutex_unlock(&ctrl->mbox_lock);
1143 	return status;
1144 }
1145 
be_cmd_iscsi_remove_template_hdr(struct be_ctrl_info * ctrl)1146 int be_cmd_iscsi_remove_template_hdr(struct be_ctrl_info *ctrl)
1147 {
1148 	struct be_mcc_wrb *wrb = wrb_from_mbox(&ctrl->mbox_mem);
1149 	struct be_remove_template_pages_req *req = embedded_payload(wrb);
1150 	int status;
1151 
1152 	mutex_lock(&ctrl->mbox_lock);
1153 
1154 	memset(wrb, 0, sizeof(*wrb));
1155 	be_wrb_hdr_prepare(wrb, sizeof(*req), true, 0);
1156 	be_cmd_hdr_prepare(&req->hdr, CMD_SUBSYSTEM_COMMON,
1157 			   OPCODE_COMMON_REMOVE_TEMPLATE_HEADER_BUFFERS,
1158 			   sizeof(*req));
1159 
1160 	req->type = BEISCSI_TEMPLATE_HDR_TYPE_ISCSI;
1161 
1162 	status = be_mbox_notify(ctrl);
1163 	mutex_unlock(&ctrl->mbox_lock);
1164 	return status;
1165 }
1166 
be_cmd_iscsi_post_sgl_pages(struct be_ctrl_info * ctrl,struct be_dma_mem * q_mem,u32 page_offset,u32 num_pages)1167 int be_cmd_iscsi_post_sgl_pages(struct be_ctrl_info *ctrl,
1168 				struct be_dma_mem *q_mem,
1169 				u32 page_offset, u32 num_pages)
1170 {
1171 	struct be_mcc_wrb *wrb = wrb_from_mbox(&ctrl->mbox_mem);
1172 	struct be_post_sgl_pages_req *req = embedded_payload(wrb);
1173 	struct beiscsi_hba *phba = pci_get_drvdata(ctrl->pdev);
1174 	int status;
1175 	unsigned int curr_pages;
1176 	u32 temp_num_pages = num_pages;
1177 
1178 	if (num_pages == 0xff)
1179 		num_pages = 1;
1180 
1181 	mutex_lock(&ctrl->mbox_lock);
1182 	do {
1183 		memset(wrb, 0, sizeof(*wrb));
1184 		be_wrb_hdr_prepare(wrb, sizeof(*req), true, 0);
1185 		be_cmd_hdr_prepare(&req->hdr, CMD_SUBSYSTEM_ISCSI,
1186 				   OPCODE_COMMON_ISCSI_CFG_POST_SGL_PAGES,
1187 				   sizeof(*req));
1188 		curr_pages = BE_NUMBER_OF_FIELD(struct be_post_sgl_pages_req,
1189 						pages);
1190 		req->num_pages = min(num_pages, curr_pages);
1191 		req->page_offset = page_offset;
1192 		be_cmd_page_addrs_prepare(req->pages, req->num_pages, q_mem);
1193 		q_mem->dma = q_mem->dma + (req->num_pages * PAGE_SIZE);
1194 		page_offset += req->num_pages;
1195 		num_pages -= req->num_pages;
1196 
1197 		if (temp_num_pages == 0xff)
1198 			req->num_pages = temp_num_pages;
1199 
1200 		status = be_mbox_notify(ctrl);
1201 		if (status) {
1202 			beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
1203 				    "BC_%d : FW CMD to map iscsi frags failed.\n");
1204 
1205 			goto error;
1206 		}
1207 	} while (num_pages > 0);
1208 error:
1209 	mutex_unlock(&ctrl->mbox_lock);
1210 	if (status != 0)
1211 		beiscsi_cmd_q_destroy(ctrl, NULL, QTYPE_SGL);
1212 	return status;
1213 }
1214 
1215 /**
1216  * be_cmd_set_vlan()- Configure VLAN paramters on the adapter
1217  * @phba: device priv structure instance
1218  * @vlan_tag: TAG to be set
1219  *
1220  * Set the VLAN_TAG for the adapter or Disable VLAN on adapter
1221  *
1222  * returns
1223  *	TAG for the MBX Cmd
1224  * **/
be_cmd_set_vlan(struct beiscsi_hba * phba,uint16_t vlan_tag)1225 int be_cmd_set_vlan(struct beiscsi_hba *phba,
1226 		     uint16_t vlan_tag)
1227 {
1228 	unsigned int tag;
1229 	struct be_mcc_wrb *wrb;
1230 	struct be_cmd_set_vlan_req *req;
1231 	struct be_ctrl_info *ctrl = &phba->ctrl;
1232 
1233 	if (mutex_lock_interruptible(&ctrl->mbox_lock))
1234 		return 0;
1235 	wrb = alloc_mcc_wrb(phba, &tag);
1236 	if (!wrb) {
1237 		mutex_unlock(&ctrl->mbox_lock);
1238 		return 0;
1239 	}
1240 
1241 	req = embedded_payload(wrb);
1242 	be_wrb_hdr_prepare(wrb, sizeof(*wrb), true, 0);
1243 	be_cmd_hdr_prepare(&req->hdr, CMD_SUBSYSTEM_ISCSI,
1244 			   OPCODE_COMMON_ISCSI_NTWK_SET_VLAN,
1245 			   sizeof(*req));
1246 
1247 	req->interface_hndl = phba->interface_handle;
1248 	req->vlan_priority = vlan_tag;
1249 
1250 	be_mcc_notify(phba, tag);
1251 	mutex_unlock(&ctrl->mbox_lock);
1252 
1253 	return tag;
1254 }
1255 
beiscsi_check_supported_fw(struct be_ctrl_info * ctrl,struct beiscsi_hba * phba)1256 int beiscsi_check_supported_fw(struct be_ctrl_info *ctrl,
1257 			       struct beiscsi_hba *phba)
1258 {
1259 	struct be_dma_mem nonemb_cmd;
1260 	struct be_mcc_wrb *wrb = wrb_from_mbox(&ctrl->mbox_mem);
1261 	struct be_mgmt_controller_attributes *req;
1262 	struct be_sge *sge = nonembedded_sgl(wrb);
1263 	int status = 0;
1264 
1265 	nonemb_cmd.va = dma_alloc_coherent(&ctrl->pdev->dev,
1266 				sizeof(struct be_mgmt_controller_attributes),
1267 				&nonemb_cmd.dma, GFP_KERNEL);
1268 	if (nonemb_cmd.va == NULL) {
1269 		beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
1270 			    "BG_%d : dma_alloc_coherent failed in %s\n",
1271 			    __func__);
1272 		return -ENOMEM;
1273 	}
1274 	nonemb_cmd.size = sizeof(struct be_mgmt_controller_attributes);
1275 	req = nonemb_cmd.va;
1276 	memset(req, 0, sizeof(*req));
1277 	mutex_lock(&ctrl->mbox_lock);
1278 	memset(wrb, 0, sizeof(*wrb));
1279 	be_wrb_hdr_prepare(wrb, sizeof(*req), false, 1);
1280 	be_cmd_hdr_prepare(&req->hdr, CMD_SUBSYSTEM_COMMON,
1281 			   OPCODE_COMMON_GET_CNTL_ATTRIBUTES, sizeof(*req));
1282 	sge->pa_hi = cpu_to_le32(upper_32_bits(nonemb_cmd.dma));
1283 	sge->pa_lo = cpu_to_le32(nonemb_cmd.dma & 0xFFFFFFFF);
1284 	sge->len = cpu_to_le32(nonemb_cmd.size);
1285 	status = be_mbox_notify(ctrl);
1286 	if (!status) {
1287 		struct be_mgmt_controller_attributes_resp *resp = nonemb_cmd.va;
1288 
1289 		beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
1290 			    "BG_%d : Firmware Version of CMD : %s\n"
1291 			    "Firmware Version is : %s\n"
1292 			    "Developer Build, not performing version check...\n",
1293 			    resp->params.hba_attribs
1294 			    .flashrom_version_string,
1295 			    resp->params.hba_attribs.
1296 			    firmware_version_string);
1297 
1298 		phba->fw_config.iscsi_features =
1299 				resp->params.hba_attribs.iscsi_features;
1300 		beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
1301 			    "BM_%d : phba->fw_config.iscsi_features = %d\n",
1302 			    phba->fw_config.iscsi_features);
1303 		memcpy(phba->fw_ver_str, resp->params.hba_attribs.
1304 		       firmware_version_string, BEISCSI_VER_STRLEN);
1305 	} else
1306 		beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
1307 			    "BG_%d :  Failed in beiscsi_check_supported_fw\n");
1308 	mutex_unlock(&ctrl->mbox_lock);
1309 	if (nonemb_cmd.va)
1310 		dma_free_coherent(&ctrl->pdev->dev, nonemb_cmd.size,
1311 				    nonemb_cmd.va, nonemb_cmd.dma);
1312 
1313 	return status;
1314 }
1315 
1316 /**
1317  * beiscsi_get_fw_config()- Get the FW config for the function
1318  * @ctrl: ptr to Ctrl Info
1319  * @phba: ptr to the dev priv structure
1320  *
1321  * Get the FW config and resources available for the function.
1322  * The resources are created based on the count received here.
1323  *
1324  * return
1325  *	Success: 0
1326  *	Failure: Non-Zero Value
1327  **/
beiscsi_get_fw_config(struct be_ctrl_info * ctrl,struct beiscsi_hba * phba)1328 int beiscsi_get_fw_config(struct be_ctrl_info *ctrl,
1329 			  struct beiscsi_hba *phba)
1330 {
1331 	struct be_mcc_wrb *wrb = wrb_from_mbox(&ctrl->mbox_mem);
1332 	struct be_fw_cfg *pfw_cfg = embedded_payload(wrb);
1333 	uint32_t cid_count, icd_count;
1334 	int status = -EINVAL;
1335 	uint8_t ulp_num = 0;
1336 
1337 	mutex_lock(&ctrl->mbox_lock);
1338 	memset(wrb, 0, sizeof(*wrb));
1339 	be_wrb_hdr_prepare(wrb, sizeof(*pfw_cfg), true, 0);
1340 
1341 	be_cmd_hdr_prepare(&pfw_cfg->hdr, CMD_SUBSYSTEM_COMMON,
1342 			   OPCODE_COMMON_QUERY_FIRMWARE_CONFIG,
1343 			   EMBED_MBX_MAX_PAYLOAD_SIZE);
1344 
1345 	if (be_mbox_notify(ctrl)) {
1346 		beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
1347 			    "BG_%d : Failed in beiscsi_get_fw_config\n");
1348 		goto fail_init;
1349 	}
1350 
1351 	/* FW response formats depend on port id */
1352 	phba->fw_config.phys_port = pfw_cfg->phys_port;
1353 	if (phba->fw_config.phys_port >= BEISCSI_PHYS_PORT_MAX) {
1354 		beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
1355 			    "BG_%d : invalid physical port id %d\n",
1356 			    phba->fw_config.phys_port);
1357 		goto fail_init;
1358 	}
1359 
1360 	/* populate and check FW config against min and max values */
1361 	if (!is_chip_be2_be3r(phba)) {
1362 		phba->fw_config.eqid_count = pfw_cfg->eqid_count;
1363 		phba->fw_config.cqid_count = pfw_cfg->cqid_count;
1364 		if (phba->fw_config.eqid_count == 0 ||
1365 		    phba->fw_config.eqid_count > 2048) {
1366 			beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
1367 				    "BG_%d : invalid EQ count %d\n",
1368 				    phba->fw_config.eqid_count);
1369 			goto fail_init;
1370 		}
1371 		if (phba->fw_config.cqid_count == 0 ||
1372 		    phba->fw_config.cqid_count > 4096) {
1373 			beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
1374 				    "BG_%d : invalid CQ count %d\n",
1375 				    phba->fw_config.cqid_count);
1376 			goto fail_init;
1377 		}
1378 		beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
1379 			    "BG_%d : EQ_Count : %d CQ_Count : %d\n",
1380 			    phba->fw_config.eqid_count,
1381 			    phba->fw_config.cqid_count);
1382 	}
1383 
1384 	/**
1385 	 * Check on which all ULP iSCSI Protocol is loaded.
1386 	 * Set the Bit for those ULP. This set flag is used
1387 	 * at all places in the code to check on which ULP
1388 	 * iSCSi Protocol is loaded
1389 	 **/
1390 	for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++) {
1391 		if (pfw_cfg->ulp[ulp_num].ulp_mode &
1392 		    BEISCSI_ULP_ISCSI_INI_MODE) {
1393 			set_bit(ulp_num, &phba->fw_config.ulp_supported);
1394 
1395 			/* Get the CID, ICD and Chain count for each ULP */
1396 			phba->fw_config.iscsi_cid_start[ulp_num] =
1397 				pfw_cfg->ulp[ulp_num].sq_base;
1398 			phba->fw_config.iscsi_cid_count[ulp_num] =
1399 				pfw_cfg->ulp[ulp_num].sq_count;
1400 
1401 			phba->fw_config.iscsi_icd_start[ulp_num] =
1402 				pfw_cfg->ulp[ulp_num].icd_base;
1403 			phba->fw_config.iscsi_icd_count[ulp_num] =
1404 				pfw_cfg->ulp[ulp_num].icd_count;
1405 
1406 			phba->fw_config.iscsi_chain_start[ulp_num] =
1407 				pfw_cfg->chain_icd[ulp_num].chain_base;
1408 			phba->fw_config.iscsi_chain_count[ulp_num] =
1409 				pfw_cfg->chain_icd[ulp_num].chain_count;
1410 
1411 			beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
1412 				    "BG_%d : Function loaded on ULP : %d\n"
1413 				    "\tiscsi_cid_count : %d\n"
1414 				    "\tiscsi_cid_start : %d\n"
1415 				    "\t iscsi_icd_count : %d\n"
1416 				    "\t iscsi_icd_start : %d\n",
1417 				    ulp_num,
1418 				    phba->fw_config.
1419 				    iscsi_cid_count[ulp_num],
1420 				    phba->fw_config.
1421 				    iscsi_cid_start[ulp_num],
1422 				    phba->fw_config.
1423 				    iscsi_icd_count[ulp_num],
1424 				    phba->fw_config.
1425 				    iscsi_icd_start[ulp_num]);
1426 		}
1427 	}
1428 
1429 	if (phba->fw_config.ulp_supported == 0) {
1430 		beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
1431 			    "BG_%d : iSCSI initiator mode not set: ULP0 %x ULP1 %x\n",
1432 			    pfw_cfg->ulp[BEISCSI_ULP0].ulp_mode,
1433 			    pfw_cfg->ulp[BEISCSI_ULP1].ulp_mode);
1434 		goto fail_init;
1435 	}
1436 
1437 	/**
1438 	 * ICD is shared among ULPs. Use icd_count of any one loaded ULP
1439 	 **/
1440 	for (ulp_num = 0; ulp_num < BEISCSI_ULP_COUNT; ulp_num++)
1441 		if (test_bit(ulp_num, &phba->fw_config.ulp_supported))
1442 			break;
1443 	icd_count = phba->fw_config.iscsi_icd_count[ulp_num];
1444 	if (icd_count == 0 || icd_count > 65536) {
1445 		beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
1446 			    "BG_%d: invalid ICD count %d\n", icd_count);
1447 		goto fail_init;
1448 	}
1449 
1450 	cid_count = BEISCSI_GET_CID_COUNT(phba, BEISCSI_ULP0) +
1451 		    BEISCSI_GET_CID_COUNT(phba, BEISCSI_ULP1);
1452 	if (cid_count == 0 || cid_count > 4096) {
1453 		beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
1454 			    "BG_%d: invalid CID count %d\n", cid_count);
1455 		goto fail_init;
1456 	}
1457 
1458 	/**
1459 	 * Check FW is dual ULP aware i.e. can handle either
1460 	 * of the protocols.
1461 	 */
1462 	phba->fw_config.dual_ulp_aware = (pfw_cfg->function_mode &
1463 					  BEISCSI_FUNC_DUA_MODE);
1464 
1465 	beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
1466 		    "BG_%d : DUA Mode : 0x%x\n",
1467 		    phba->fw_config.dual_ulp_aware);
1468 
1469 	/* all set, continue using this FW config */
1470 	status = 0;
1471 fail_init:
1472 	mutex_unlock(&ctrl->mbox_lock);
1473 	return status;
1474 }
1475 
1476 /**
1477  * beiscsi_get_port_name()- Get port name for the function
1478  * @ctrl: ptr to Ctrl Info
1479  * @phba: ptr to the dev priv structure
1480  *
1481  * Get the alphanumeric character for port
1482  *
1483  **/
beiscsi_get_port_name(struct be_ctrl_info * ctrl,struct beiscsi_hba * phba)1484 int beiscsi_get_port_name(struct be_ctrl_info *ctrl, struct beiscsi_hba *phba)
1485 {
1486 	int ret = 0;
1487 	struct be_mcc_wrb *wrb;
1488 	struct be_cmd_get_port_name *ioctl;
1489 
1490 	mutex_lock(&ctrl->mbox_lock);
1491 	wrb = wrb_from_mbox(&ctrl->mbox_mem);
1492 	memset(wrb, 0, sizeof(*wrb));
1493 	ioctl = embedded_payload(wrb);
1494 
1495 	be_wrb_hdr_prepare(wrb, sizeof(*ioctl), true, 0);
1496 	be_cmd_hdr_prepare(&ioctl->h.req_hdr, CMD_SUBSYSTEM_COMMON,
1497 			   OPCODE_COMMON_GET_PORT_NAME,
1498 			   EMBED_MBX_MAX_PAYLOAD_SIZE);
1499 	ret = be_mbox_notify(ctrl);
1500 	phba->port_name = 0;
1501 	if (!ret) {
1502 		phba->port_name = ioctl->p.resp.port_names >>
1503 				  (phba->fw_config.phys_port * 8) & 0xff;
1504 	} else {
1505 		beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
1506 			    "BG_%d : GET_PORT_NAME ret 0x%x status 0x%x\n",
1507 			    ret, ioctl->h.resp_hdr.status);
1508 	}
1509 
1510 	if (phba->port_name == 0)
1511 		phba->port_name = '?';
1512 
1513 	mutex_unlock(&ctrl->mbox_lock);
1514 	return ret;
1515 }
1516 
beiscsi_set_host_data(struct beiscsi_hba * phba)1517 int beiscsi_set_host_data(struct beiscsi_hba *phba)
1518 {
1519 	struct be_ctrl_info *ctrl = &phba->ctrl;
1520 	struct be_cmd_set_host_data *ioctl;
1521 	struct be_mcc_wrb *wrb;
1522 	int ret = 0;
1523 
1524 	if (is_chip_be2_be3r(phba))
1525 		return ret;
1526 
1527 	mutex_lock(&ctrl->mbox_lock);
1528 	wrb = wrb_from_mbox(&ctrl->mbox_mem);
1529 	memset(wrb, 0, sizeof(*wrb));
1530 	ioctl = embedded_payload(wrb);
1531 
1532 	be_wrb_hdr_prepare(wrb, sizeof(*ioctl), true, 0);
1533 	be_cmd_hdr_prepare(&ioctl->h.req_hdr, CMD_SUBSYSTEM_COMMON,
1534 			   OPCODE_COMMON_SET_HOST_DATA,
1535 			   EMBED_MBX_MAX_PAYLOAD_SIZE);
1536 	ioctl->param.req.param_id = BE_CMD_SET_HOST_PARAM_ID;
1537 	ioctl->param.req.param_len =
1538 		snprintf((char *)ioctl->param.req.param_data,
1539 			 sizeof(ioctl->param.req.param_data),
1540 			 "Linux iSCSI v%s", BUILD_STR);
1541 	ioctl->param.req.param_len = ALIGN(ioctl->param.req.param_len + 1, 4);
1542 	if (ioctl->param.req.param_len > BE_CMD_MAX_DRV_VERSION)
1543 		ioctl->param.req.param_len = BE_CMD_MAX_DRV_VERSION;
1544 	ret = be_mbox_notify(ctrl);
1545 	if (!ret) {
1546 		beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
1547 			    "BG_%d : HBA set host driver version\n");
1548 	} else {
1549 		/**
1550 		 * Check "MCC_STATUS_INVALID_LENGTH" for SKH.
1551 		 * Older FW versions return this error.
1552 		 */
1553 		if (ret == MCC_STATUS_ILLEGAL_REQUEST ||
1554 				ret == MCC_STATUS_INVALID_LENGTH)
1555 			__beiscsi_log(phba, KERN_INFO,
1556 				      "BG_%d : HBA failed to set host driver version\n");
1557 	}
1558 
1559 	mutex_unlock(&ctrl->mbox_lock);
1560 	return ret;
1561 }
1562 
beiscsi_set_uer_feature(struct beiscsi_hba * phba)1563 int beiscsi_set_uer_feature(struct beiscsi_hba *phba)
1564 {
1565 	struct be_ctrl_info *ctrl = &phba->ctrl;
1566 	struct be_cmd_set_features *ioctl;
1567 	struct be_mcc_wrb *wrb;
1568 	int ret = 0;
1569 
1570 	mutex_lock(&ctrl->mbox_lock);
1571 	wrb = wrb_from_mbox(&ctrl->mbox_mem);
1572 	memset(wrb, 0, sizeof(*wrb));
1573 	ioctl = embedded_payload(wrb);
1574 
1575 	be_wrb_hdr_prepare(wrb, sizeof(*ioctl), true, 0);
1576 	be_cmd_hdr_prepare(&ioctl->h.req_hdr, CMD_SUBSYSTEM_COMMON,
1577 			   OPCODE_COMMON_SET_FEATURES,
1578 			   EMBED_MBX_MAX_PAYLOAD_SIZE);
1579 	ioctl->feature = BE_CMD_SET_FEATURE_UER;
1580 	ioctl->param_len = sizeof(ioctl->param.req);
1581 	ioctl->param.req.uer = BE_CMD_UER_SUPP_BIT;
1582 	ret = be_mbox_notify(ctrl);
1583 	if (!ret) {
1584 		phba->ue2rp = ioctl->param.resp.ue2rp;
1585 		set_bit(BEISCSI_HBA_UER_SUPP, &phba->state);
1586 		beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
1587 			    "BG_%d : HBA error recovery supported\n");
1588 	} else {
1589 		/**
1590 		 * Check "MCC_STATUS_INVALID_LENGTH" for SKH.
1591 		 * Older FW versions return this error.
1592 		 */
1593 		if (ret == MCC_STATUS_ILLEGAL_REQUEST ||
1594 		    ret == MCC_STATUS_INVALID_LENGTH)
1595 			__beiscsi_log(phba, KERN_INFO,
1596 				      "BG_%d : HBA error recovery not supported\n");
1597 	}
1598 
1599 	mutex_unlock(&ctrl->mbox_lock);
1600 	return ret;
1601 }
1602 
beiscsi_get_post_stage(struct beiscsi_hba * phba)1603 static u32 beiscsi_get_post_stage(struct beiscsi_hba *phba)
1604 {
1605 	u32 sem;
1606 
1607 	if (is_chip_be2_be3r(phba))
1608 		sem = ioread32(phba->csr_va + SLIPORT_SEMAPHORE_OFFSET_BEx);
1609 	else
1610 		pci_read_config_dword(phba->pcidev,
1611 				      SLIPORT_SEMAPHORE_OFFSET_SH, &sem);
1612 	return sem;
1613 }
1614 
beiscsi_check_fw_rdy(struct beiscsi_hba * phba)1615 int beiscsi_check_fw_rdy(struct beiscsi_hba *phba)
1616 {
1617 	u32 loop, post, rdy = 0;
1618 
1619 	loop = 1000;
1620 	while (loop--) {
1621 		post = beiscsi_get_post_stage(phba);
1622 		if (post & POST_ERROR_BIT)
1623 			break;
1624 		if ((post & POST_STAGE_MASK) == POST_STAGE_ARMFW_RDY) {
1625 			rdy = 1;
1626 			break;
1627 		}
1628 		msleep(60);
1629 	}
1630 
1631 	if (!rdy) {
1632 		__beiscsi_log(phba, KERN_ERR,
1633 			      "BC_%d : FW not ready 0x%x\n", post);
1634 	}
1635 
1636 	return rdy;
1637 }
1638 
beiscsi_cmd_function_reset(struct beiscsi_hba * phba)1639 int beiscsi_cmd_function_reset(struct beiscsi_hba *phba)
1640 {
1641 	struct be_ctrl_info *ctrl = &phba->ctrl;
1642 	struct be_mcc_wrb *wrb = wrb_from_mbox(&ctrl->mbox_mem);
1643 	struct be_post_sgl_pages_req *req;
1644 	int status;
1645 
1646 	mutex_lock(&ctrl->mbox_lock);
1647 
1648 	req = embedded_payload(wrb);
1649 	be_wrb_hdr_prepare(wrb, sizeof(*req), true, 0);
1650 	be_cmd_hdr_prepare(&req->hdr, CMD_SUBSYSTEM_COMMON,
1651 			   OPCODE_COMMON_FUNCTION_RESET, sizeof(*req));
1652 	status = be_mbox_notify(ctrl);
1653 
1654 	mutex_unlock(&ctrl->mbox_lock);
1655 	return status;
1656 }
1657 
beiscsi_cmd_special_wrb(struct be_ctrl_info * ctrl,u32 load)1658 int beiscsi_cmd_special_wrb(struct be_ctrl_info *ctrl, u32 load)
1659 {
1660 	struct be_mcc_wrb *wrb = wrb_from_mbox(&ctrl->mbox_mem);
1661 	struct beiscsi_hba *phba = pci_get_drvdata(ctrl->pdev);
1662 	u8 *endian_check;
1663 	int status;
1664 
1665 	mutex_lock(&ctrl->mbox_lock);
1666 	memset(wrb, 0, sizeof(*wrb));
1667 
1668 	endian_check = (u8 *) wrb;
1669 	if (load) {
1670 		/* to start communicating */
1671 		*endian_check++ = 0xFF;
1672 		*endian_check++ = 0x12;
1673 		*endian_check++ = 0x34;
1674 		*endian_check++ = 0xFF;
1675 		*endian_check++ = 0xFF;
1676 		*endian_check++ = 0x56;
1677 		*endian_check++ = 0x78;
1678 		*endian_check++ = 0xFF;
1679 	} else {
1680 		/* to stop communicating */
1681 		*endian_check++ = 0xFF;
1682 		*endian_check++ = 0xAA;
1683 		*endian_check++ = 0xBB;
1684 		*endian_check++ = 0xFF;
1685 		*endian_check++ = 0xFF;
1686 		*endian_check++ = 0xCC;
1687 		*endian_check++ = 0xDD;
1688 		*endian_check = 0xFF;
1689 	}
1690 	be_dws_cpu_to_le(wrb, sizeof(*wrb));
1691 
1692 	status = be_mbox_notify(ctrl);
1693 	if (status)
1694 		beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_INIT,
1695 			    "BC_%d : special WRB message failed\n");
1696 	mutex_unlock(&ctrl->mbox_lock);
1697 	return status;
1698 }
1699 
beiscsi_init_sliport(struct beiscsi_hba * phba)1700 int beiscsi_init_sliport(struct beiscsi_hba *phba)
1701 {
1702 	int status;
1703 
1704 	/* check POST stage before talking to FW */
1705 	status = beiscsi_check_fw_rdy(phba);
1706 	if (!status)
1707 		return -EIO;
1708 
1709 	/* clear all error states after checking FW rdy */
1710 	phba->state &= ~BEISCSI_HBA_IN_ERR;
1711 
1712 	/* check again UER support */
1713 	phba->state &= ~BEISCSI_HBA_UER_SUPP;
1714 
1715 	/*
1716 	 * SLI COMMON_FUNCTION_RESET completion is indicated by BMBX RDY bit.
1717 	 * It should clean up any stale info in FW for this fn.
1718 	 */
1719 	status = beiscsi_cmd_function_reset(phba);
1720 	if (status) {
1721 		beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT,
1722 			    "BC_%d : SLI Function Reset failed\n");
1723 		return status;
1724 	}
1725 
1726 	/* indicate driver is loading */
1727 	return beiscsi_cmd_special_wrb(&phba->ctrl, 1);
1728 }
1729 
1730 /**
1731  * beiscsi_cmd_iscsi_cleanup()- Inform FW to cleanup EP data structures.
1732  * @phba: pointer to dev priv structure
1733  * @ulp: ULP number.
1734  *
1735  * return
1736  *	Success: 0
1737  *	Failure: Non-Zero Value
1738  **/
beiscsi_cmd_iscsi_cleanup(struct beiscsi_hba * phba,unsigned short ulp)1739 int beiscsi_cmd_iscsi_cleanup(struct beiscsi_hba *phba, unsigned short ulp)
1740 {
1741 	struct be_ctrl_info *ctrl = &phba->ctrl;
1742 	struct iscsi_cleanup_req_v1 *req_v1;
1743 	struct iscsi_cleanup_req *req;
1744 	u16 hdr_ring_id, data_ring_id;
1745 	struct be_mcc_wrb *wrb;
1746 	int status;
1747 
1748 	mutex_lock(&ctrl->mbox_lock);
1749 	wrb = wrb_from_mbox(&ctrl->mbox_mem);
1750 
1751 	hdr_ring_id = HWI_GET_DEF_HDRQ_ID(phba, ulp);
1752 	data_ring_id = HWI_GET_DEF_BUFQ_ID(phba, ulp);
1753 	if (is_chip_be2_be3r(phba)) {
1754 		req = embedded_payload(wrb);
1755 		be_wrb_hdr_prepare(wrb, sizeof(*req), true, 0);
1756 		be_cmd_hdr_prepare(&req->hdr, CMD_SUBSYSTEM_ISCSI,
1757 				   OPCODE_COMMON_ISCSI_CLEANUP, sizeof(*req));
1758 		req->chute = (1 << ulp);
1759 		/* BE2/BE3 FW creates 8-bit ring id */
1760 		req->hdr_ring_id = hdr_ring_id;
1761 		req->data_ring_id = data_ring_id;
1762 	} else {
1763 		req_v1 = embedded_payload(wrb);
1764 		be_wrb_hdr_prepare(wrb, sizeof(*req_v1), true, 0);
1765 		be_cmd_hdr_prepare(&req_v1->hdr, CMD_SUBSYSTEM_ISCSI,
1766 				   OPCODE_COMMON_ISCSI_CLEANUP,
1767 				   sizeof(*req_v1));
1768 		req_v1->hdr.version = 1;
1769 		req_v1->chute = (1 << ulp);
1770 		req_v1->hdr_ring_id = cpu_to_le16(hdr_ring_id);
1771 		req_v1->data_ring_id = cpu_to_le16(data_ring_id);
1772 	}
1773 
1774 	status = be_mbox_notify(ctrl);
1775 	if (status)
1776 		beiscsi_log(phba, KERN_WARNING, BEISCSI_LOG_INIT,
1777 			    "BG_%d : %s failed %d\n", __func__, ulp);
1778 	mutex_unlock(&ctrl->mbox_lock);
1779 	return status;
1780 }
1781 
1782 /*
1783  * beiscsi_detect_ue()- Detect Unrecoverable Error on adapter
1784  * @phba: Driver priv structure
1785  *
1786  * Read registers linked to UE and check for the UE status
1787  **/
beiscsi_detect_ue(struct beiscsi_hba * phba)1788 int beiscsi_detect_ue(struct beiscsi_hba *phba)
1789 {
1790 	uint32_t ue_mask_hi = 0, ue_mask_lo = 0;
1791 	uint32_t ue_hi = 0, ue_lo = 0;
1792 	uint8_t i = 0;
1793 	int ret = 0;
1794 
1795 	pci_read_config_dword(phba->pcidev,
1796 			      PCICFG_UE_STATUS_LOW, &ue_lo);
1797 	pci_read_config_dword(phba->pcidev,
1798 			      PCICFG_UE_STATUS_MASK_LOW,
1799 			      &ue_mask_lo);
1800 	pci_read_config_dword(phba->pcidev,
1801 			      PCICFG_UE_STATUS_HIGH,
1802 			      &ue_hi);
1803 	pci_read_config_dword(phba->pcidev,
1804 			      PCICFG_UE_STATUS_MASK_HI,
1805 			      &ue_mask_hi);
1806 
1807 	ue_lo = (ue_lo & ~ue_mask_lo);
1808 	ue_hi = (ue_hi & ~ue_mask_hi);
1809 
1810 
1811 	if (ue_lo || ue_hi) {
1812 		set_bit(BEISCSI_HBA_IN_UE, &phba->state);
1813 		__beiscsi_log(phba, KERN_ERR,
1814 			      "BC_%d : HBA error detected\n");
1815 		ret = 1;
1816 	}
1817 
1818 	if (ue_lo) {
1819 		for (i = 0; ue_lo; ue_lo >>= 1, i++) {
1820 			if (ue_lo & 1)
1821 				__beiscsi_log(phba, KERN_ERR,
1822 					      "BC_%d : UE_LOW %s bit set\n",
1823 					      desc_ue_status_low[i]);
1824 		}
1825 	}
1826 
1827 	if (ue_hi) {
1828 		for (i = 0; ue_hi; ue_hi >>= 1, i++) {
1829 			if (ue_hi & 1)
1830 				__beiscsi_log(phba, KERN_ERR,
1831 					      "BC_%d : UE_HIGH %s bit set\n",
1832 					      desc_ue_status_hi[i]);
1833 		}
1834 	}
1835 	return ret;
1836 }
1837 
1838 /*
1839  * beiscsi_detect_tpe()- Detect Transient Parity Error on adapter
1840  * @phba: Driver priv structure
1841  *
1842  * Read SLIPORT SEMAPHORE register to check for UER
1843  *
1844  **/
beiscsi_detect_tpe(struct beiscsi_hba * phba)1845 int beiscsi_detect_tpe(struct beiscsi_hba *phba)
1846 {
1847 	u32 post, status;
1848 	int ret = 0;
1849 
1850 	post = beiscsi_get_post_stage(phba);
1851 	status = post & POST_STAGE_MASK;
1852 	if ((status & POST_ERR_RECOVERY_CODE_MASK) ==
1853 	    POST_STAGE_RECOVERABLE_ERR) {
1854 		set_bit(BEISCSI_HBA_IN_TPE, &phba->state);
1855 		__beiscsi_log(phba, KERN_INFO,
1856 			      "BC_%d : HBA error recoverable: 0x%x\n", post);
1857 		ret = 1;
1858 	} else {
1859 		__beiscsi_log(phba, KERN_INFO,
1860 			      "BC_%d : HBA in UE: 0x%x\n", post);
1861 	}
1862 
1863 	return ret;
1864 }
1865