1 // SPDX-License-Identifier: GPL-2.0
2 /*
3  * Copyright (C) 2021 Broadcom. All Rights Reserved. The term
4  * “Broadcom” refers to Broadcom Inc. and/or its subsidiaries.
5  */
6 
7 /**
8  * All common (i.e. transport-independent) SLI-4 functions are implemented
9  * in this file.
10  */
11 #include "sli4.h"
12 
13 static struct sli4_asic_entry_t sli4_asic_table[] = {
14 	{ SLI4_ASIC_REV_B0, SLI4_ASIC_GEN_5},
15 	{ SLI4_ASIC_REV_D0, SLI4_ASIC_GEN_5},
16 	{ SLI4_ASIC_REV_A3, SLI4_ASIC_GEN_6},
17 	{ SLI4_ASIC_REV_A0, SLI4_ASIC_GEN_6},
18 	{ SLI4_ASIC_REV_A1, SLI4_ASIC_GEN_6},
19 	{ SLI4_ASIC_REV_A3, SLI4_ASIC_GEN_6},
20 	{ SLI4_ASIC_REV_A1, SLI4_ASIC_GEN_7},
21 	{ SLI4_ASIC_REV_A0, SLI4_ASIC_GEN_7},
22 };
23 
24 /* Convert queue type enum (SLI_QTYPE_*) into a string */
25 static char *SLI4_QNAME[] = {
26 	"Event Queue",
27 	"Completion Queue",
28 	"Mailbox Queue",
29 	"Work Queue",
30 	"Receive Queue",
31 	"Undefined"
32 };
33 
34 /**
35  * sli_config_cmd_init() - Write a SLI_CONFIG command to the provided buffer.
36  *
37  * @sli4: SLI context pointer.
38  * @buf: Destination buffer for the command.
39  * @length: Length in bytes of attached command.
40  * @dma: DMA buffer for non-embedded commands.
41  * Return: Command payload buffer.
42  */
43 static void *
sli_config_cmd_init(struct sli4 * sli4,void * buf,u32 length,struct efc_dma * dma)44 sli_config_cmd_init(struct sli4 *sli4, void *buf, u32 length,
45 		    struct efc_dma *dma)
46 {
47 	struct sli4_cmd_sli_config *config;
48 	u32 flags;
49 
50 	if (length > sizeof(config->payload.embed) && !dma) {
51 		efc_log_err(sli4, "Too big for an embedded cmd with len(%d)\n",
52 			    length);
53 		return NULL;
54 	}
55 
56 	memset(buf, 0, SLI4_BMBX_SIZE);
57 
58 	config = buf;
59 
60 	config->hdr.command = SLI4_MBX_CMD_SLI_CONFIG;
61 	if (!dma) {
62 		flags = SLI4_SLICONF_EMB;
63 		config->dw1_flags = cpu_to_le32(flags);
64 		config->payload_len = cpu_to_le32(length);
65 		return config->payload.embed;
66 	}
67 
68 	flags = SLI4_SLICONF_PMDCMD_VAL_1;
69 	flags &= ~SLI4_SLICONF_EMB;
70 	config->dw1_flags = cpu_to_le32(flags);
71 
72 	config->payload.mem.addr.low = cpu_to_le32(lower_32_bits(dma->phys));
73 	config->payload.mem.addr.high =	cpu_to_le32(upper_32_bits(dma->phys));
74 	config->payload.mem.length =
75 				cpu_to_le32(dma->size & SLI4_SLICONF_PMD_LEN);
76 	config->payload_len = cpu_to_le32(dma->size);
77 	/* save pointer to DMA for BMBX dumping purposes */
78 	sli4->bmbx_non_emb_pmd = dma;
79 	return dma->virt;
80 }
81 
82 /**
83  * sli_cmd_common_create_cq() - Write a COMMON_CREATE_CQ V2 command.
84  *
85  * @sli4: SLI context pointer.
86  * @buf: Destination buffer for the command.
87  * @qmem: DMA memory for queue.
88  * @eq_id: EQ id assosiated with this cq.
89  * Return: status -EIO/0.
90  */
91 static int
sli_cmd_common_create_cq(struct sli4 * sli4,void * buf,struct efc_dma * qmem,u16 eq_id)92 sli_cmd_common_create_cq(struct sli4 *sli4, void *buf, struct efc_dma *qmem,
93 			 u16 eq_id)
94 {
95 	struct sli4_rqst_cmn_create_cq_v2 *cqv2 = NULL;
96 	u32 p;
97 	uintptr_t addr;
98 	u32 num_pages = 0;
99 	size_t cmd_size = 0;
100 	u32 page_size = 0;
101 	u32 n_cqe = 0;
102 	u32 dw5_flags = 0;
103 	u16 dw6w1_arm = 0;
104 	__le32 len;
105 
106 	/* First calculate number of pages and the mailbox cmd length */
107 	n_cqe = qmem->size / SLI4_CQE_BYTES;
108 	switch (n_cqe) {
109 	case 256:
110 	case 512:
111 	case 1024:
112 	case 2048:
113 		page_size = SZ_4K;
114 		break;
115 	case 4096:
116 		page_size = SZ_8K;
117 		break;
118 	default:
119 		return -EIO;
120 	}
121 	num_pages = sli_page_count(qmem->size, page_size);
122 
123 	cmd_size = SLI4_RQST_CMDSZ(cmn_create_cq_v2)
124 		   + SZ_DMAADDR * num_pages;
125 
126 	cqv2 = sli_config_cmd_init(sli4, buf, cmd_size, NULL);
127 	if (!cqv2)
128 		return -EIO;
129 
130 	len = SLI4_RQST_PYLD_LEN_VAR(cmn_create_cq_v2, SZ_DMAADDR * num_pages);
131 	sli_cmd_fill_hdr(&cqv2->hdr, SLI4_CMN_CREATE_CQ, SLI4_SUBSYSTEM_COMMON,
132 			 CMD_V2, len);
133 	cqv2->page_size = page_size / SLI_PAGE_SIZE;
134 
135 	/* valid values for number of pages: 1, 2, 4, 8 (sec 4.4.3) */
136 	cqv2->num_pages = cpu_to_le16(num_pages);
137 	if (!num_pages || num_pages > SLI4_CREATE_CQV2_MAX_PAGES)
138 		return -EIO;
139 
140 	switch (num_pages) {
141 	case 1:
142 		dw5_flags |= SLI4_CQ_CNT_VAL(256);
143 		break;
144 	case 2:
145 		dw5_flags |= SLI4_CQ_CNT_VAL(512);
146 		break;
147 	case 4:
148 		dw5_flags |= SLI4_CQ_CNT_VAL(1024);
149 		break;
150 	case 8:
151 		dw5_flags |= SLI4_CQ_CNT_VAL(LARGE);
152 		cqv2->cqe_count = cpu_to_le16(n_cqe);
153 		break;
154 	default:
155 		efc_log_err(sli4, "num_pages %d not valid\n", num_pages);
156 		return -EIO;
157 	}
158 
159 	if (sli4->if_type == SLI4_INTF_IF_TYPE_6)
160 		dw5_flags |= SLI4_CREATE_CQV2_AUTOVALID;
161 
162 	dw5_flags |= SLI4_CREATE_CQV2_EVT;
163 	dw5_flags |= SLI4_CREATE_CQV2_VALID;
164 
165 	cqv2->dw5_flags = cpu_to_le32(dw5_flags);
166 	cqv2->dw6w1_arm = cpu_to_le16(dw6w1_arm);
167 	cqv2->eq_id = cpu_to_le16(eq_id);
168 
169 	for (p = 0, addr = qmem->phys; p < num_pages; p++, addr += page_size) {
170 		cqv2->page_phys_addr[p].low = cpu_to_le32(lower_32_bits(addr));
171 		cqv2->page_phys_addr[p].high = cpu_to_le32(upper_32_bits(addr));
172 	}
173 
174 	return 0;
175 }
176 
177 static int
sli_cmd_common_create_eq(struct sli4 * sli4,void * buf,struct efc_dma * qmem)178 sli_cmd_common_create_eq(struct sli4 *sli4, void *buf, struct efc_dma *qmem)
179 {
180 	struct sli4_rqst_cmn_create_eq *eq;
181 	u32 p;
182 	uintptr_t addr;
183 	u16 num_pages;
184 	u32 dw5_flags = 0;
185 	u32 dw6_flags = 0, ver;
186 
187 	eq = sli_config_cmd_init(sli4, buf, SLI4_CFG_PYLD_LENGTH(cmn_create_eq),
188 				 NULL);
189 	if (!eq)
190 		return -EIO;
191 
192 	if (sli4->if_type == SLI4_INTF_IF_TYPE_6)
193 		ver = CMD_V2;
194 	else
195 		ver = CMD_V0;
196 
197 	sli_cmd_fill_hdr(&eq->hdr, SLI4_CMN_CREATE_EQ, SLI4_SUBSYSTEM_COMMON,
198 			 ver, SLI4_RQST_PYLD_LEN(cmn_create_eq));
199 
200 	/* valid values for number of pages: 1, 2, 4 (sec 4.4.3) */
201 	num_pages = qmem->size / SLI_PAGE_SIZE;
202 	eq->num_pages = cpu_to_le16(num_pages);
203 
204 	switch (num_pages) {
205 	case 1:
206 		dw5_flags |= SLI4_EQE_SIZE_4;
207 		dw6_flags |= SLI4_EQ_CNT_VAL(1024);
208 		break;
209 	case 2:
210 		dw5_flags |= SLI4_EQE_SIZE_4;
211 		dw6_flags |= SLI4_EQ_CNT_VAL(2048);
212 		break;
213 	case 4:
214 		dw5_flags |= SLI4_EQE_SIZE_4;
215 		dw6_flags |= SLI4_EQ_CNT_VAL(4096);
216 		break;
217 	default:
218 		efc_log_err(sli4, "num_pages %d not valid\n", num_pages);
219 		return -EIO;
220 	}
221 
222 	if (sli4->if_type == SLI4_INTF_IF_TYPE_6)
223 		dw5_flags |= SLI4_CREATE_EQ_AUTOVALID;
224 
225 	dw5_flags |= SLI4_CREATE_EQ_VALID;
226 	dw6_flags &= (~SLI4_CREATE_EQ_ARM);
227 	eq->dw5_flags = cpu_to_le32(dw5_flags);
228 	eq->dw6_flags = cpu_to_le32(dw6_flags);
229 	eq->dw7_delaymulti = cpu_to_le32(SLI4_CREATE_EQ_DELAYMULTI);
230 
231 	for (p = 0, addr = qmem->phys; p < num_pages;
232 	     p++, addr += SLI_PAGE_SIZE) {
233 		eq->page_address[p].low = cpu_to_le32(lower_32_bits(addr));
234 		eq->page_address[p].high = cpu_to_le32(upper_32_bits(addr));
235 	}
236 
237 	return 0;
238 }
239 
240 static int
sli_cmd_common_create_mq_ext(struct sli4 * sli4,void * buf,struct efc_dma * qmem,u16 cq_id)241 sli_cmd_common_create_mq_ext(struct sli4 *sli4, void *buf, struct efc_dma *qmem,
242 			     u16 cq_id)
243 {
244 	struct sli4_rqst_cmn_create_mq_ext *mq;
245 	u32 p;
246 	uintptr_t addr;
247 	u32 num_pages;
248 	u16 dw6w1_flags = 0;
249 
250 	mq = sli_config_cmd_init(sli4, buf,
251 				 SLI4_CFG_PYLD_LENGTH(cmn_create_mq_ext), NULL);
252 	if (!mq)
253 		return -EIO;
254 
255 	sli_cmd_fill_hdr(&mq->hdr, SLI4_CMN_CREATE_MQ_EXT,
256 			 SLI4_SUBSYSTEM_COMMON, CMD_V0,
257 			 SLI4_RQST_PYLD_LEN(cmn_create_mq_ext));
258 
259 	/* valid values for number of pages: 1, 2, 4, 8 (sec 4.4.12) */
260 	num_pages = qmem->size / SLI_PAGE_SIZE;
261 	mq->num_pages = cpu_to_le16(num_pages);
262 	switch (num_pages) {
263 	case 1:
264 		dw6w1_flags |= SLI4_MQE_SIZE_16;
265 		break;
266 	case 2:
267 		dw6w1_flags |= SLI4_MQE_SIZE_32;
268 		break;
269 	case 4:
270 		dw6w1_flags |= SLI4_MQE_SIZE_64;
271 		break;
272 	case 8:
273 		dw6w1_flags |= SLI4_MQE_SIZE_128;
274 		break;
275 	default:
276 		efc_log_info(sli4, "num_pages %d not valid\n", num_pages);
277 		return -EIO;
278 	}
279 
280 	mq->async_event_bitmap = cpu_to_le32(SLI4_ASYNC_EVT_FC_ALL);
281 
282 	if (sli4->params.mq_create_version) {
283 		mq->cq_id_v1 = cpu_to_le16(cq_id);
284 		mq->hdr.dw3_version = cpu_to_le32(CMD_V1);
285 	} else {
286 		dw6w1_flags |= (cq_id << SLI4_CREATE_MQEXT_CQID_SHIFT);
287 	}
288 	mq->dw7_val = cpu_to_le32(SLI4_CREATE_MQEXT_VAL);
289 
290 	mq->dw6w1_flags = cpu_to_le16(dw6w1_flags);
291 	for (p = 0, addr = qmem->phys; p < num_pages;
292 	     p++, addr += SLI_PAGE_SIZE) {
293 		mq->page_phys_addr[p].low = cpu_to_le32(lower_32_bits(addr));
294 		mq->page_phys_addr[p].high = cpu_to_le32(upper_32_bits(addr));
295 	}
296 
297 	return 0;
298 }
299 
300 int
sli_cmd_wq_create(struct sli4 * sli4,void * buf,struct efc_dma * qmem,u16 cq_id)301 sli_cmd_wq_create(struct sli4 *sli4, void *buf, struct efc_dma *qmem, u16 cq_id)
302 {
303 	struct sli4_rqst_wq_create *wq;
304 	u32 p;
305 	uintptr_t addr;
306 	u32 page_size = 0;
307 	u32 n_wqe = 0;
308 	u16 num_pages;
309 
310 	wq = sli_config_cmd_init(sli4, buf, SLI4_CFG_PYLD_LENGTH(wq_create),
311 				 NULL);
312 	if (!wq)
313 		return -EIO;
314 
315 	sli_cmd_fill_hdr(&wq->hdr, SLI4_OPC_WQ_CREATE, SLI4_SUBSYSTEM_FC,
316 			 CMD_V1, SLI4_RQST_PYLD_LEN(wq_create));
317 	n_wqe = qmem->size / sli4->wqe_size;
318 
319 	switch (qmem->size) {
320 	case 4096:
321 	case 8192:
322 	case 16384:
323 	case 32768:
324 		page_size = SZ_4K;
325 		break;
326 	case 65536:
327 		page_size = SZ_8K;
328 		break;
329 	case 131072:
330 		page_size = SZ_16K;
331 		break;
332 	case 262144:
333 		page_size = SZ_32K;
334 		break;
335 	case 524288:
336 		page_size = SZ_64K;
337 		break;
338 	default:
339 		return -EIO;
340 	}
341 
342 	/* valid values for number of pages(num_pages): 1-8 */
343 	num_pages = sli_page_count(qmem->size, page_size);
344 	wq->num_pages = cpu_to_le16(num_pages);
345 	if (!num_pages || num_pages > SLI4_WQ_CREATE_MAX_PAGES)
346 		return -EIO;
347 
348 	wq->cq_id = cpu_to_le16(cq_id);
349 
350 	wq->page_size = page_size / SLI_PAGE_SIZE;
351 
352 	if (sli4->wqe_size == SLI4_WQE_EXT_BYTES)
353 		wq->wqe_size_byte |= SLI4_WQE_EXT_SIZE;
354 	else
355 		wq->wqe_size_byte |= SLI4_WQE_SIZE;
356 
357 	wq->wqe_count = cpu_to_le16(n_wqe);
358 
359 	for (p = 0, addr = qmem->phys; p < num_pages; p++, addr += page_size) {
360 		wq->page_phys_addr[p].low  = cpu_to_le32(lower_32_bits(addr));
361 		wq->page_phys_addr[p].high = cpu_to_le32(upper_32_bits(addr));
362 	}
363 
364 	return 0;
365 }
366 
367 static int
sli_cmd_rq_create_v1(struct sli4 * sli4,void * buf,struct efc_dma * qmem,u16 cq_id,u16 buffer_size)368 sli_cmd_rq_create_v1(struct sli4 *sli4, void *buf, struct efc_dma *qmem,
369 		     u16 cq_id, u16 buffer_size)
370 {
371 	struct sli4_rqst_rq_create_v1 *rq;
372 	u32 p;
373 	uintptr_t addr;
374 	u32 num_pages;
375 
376 	rq = sli_config_cmd_init(sli4, buf, SLI4_CFG_PYLD_LENGTH(rq_create_v1),
377 				 NULL);
378 	if (!rq)
379 		return -EIO;
380 
381 	sli_cmd_fill_hdr(&rq->hdr, SLI4_OPC_RQ_CREATE, SLI4_SUBSYSTEM_FC,
382 			 CMD_V1, SLI4_RQST_PYLD_LEN(rq_create_v1));
383 	/* Disable "no buffer warnings" to avoid Lancer bug */
384 	rq->dim_dfd_dnb |= SLI4_RQ_CREATE_V1_DNB;
385 
386 	/* valid values for number of pages: 1-8 (sec 4.5.6) */
387 	num_pages = sli_page_count(qmem->size, SLI_PAGE_SIZE);
388 	rq->num_pages = cpu_to_le16(num_pages);
389 	if (!num_pages ||
390 	    num_pages > SLI4_RQ_CREATE_V1_MAX_PAGES) {
391 		efc_log_info(sli4, "num_pages %d not valid, max %d\n",
392 			     num_pages, SLI4_RQ_CREATE_V1_MAX_PAGES);
393 		return -EIO;
394 	}
395 
396 	/*
397 	 * RQE count is the total number of entries (note not lg2(# entries))
398 	 */
399 	rq->rqe_count = cpu_to_le16(qmem->size / SLI4_RQE_SIZE);
400 
401 	rq->rqe_size_byte |= SLI4_RQE_SIZE_8;
402 
403 	rq->page_size = SLI4_RQ_PAGE_SIZE_4096;
404 
405 	if (buffer_size < sli4->rq_min_buf_size ||
406 	    buffer_size > sli4->rq_max_buf_size) {
407 		efc_log_err(sli4, "buffer_size %d out of range (%d-%d)\n",
408 			    buffer_size, sli4->rq_min_buf_size,
409 			    sli4->rq_max_buf_size);
410 		return -EIO;
411 	}
412 	rq->buffer_size = cpu_to_le32(buffer_size);
413 
414 	rq->cq_id = cpu_to_le16(cq_id);
415 
416 	for (p = 0, addr = qmem->phys;
417 			p < num_pages;
418 			p++, addr += SLI_PAGE_SIZE) {
419 		rq->page_phys_addr[p].low  = cpu_to_le32(lower_32_bits(addr));
420 		rq->page_phys_addr[p].high = cpu_to_le32(upper_32_bits(addr));
421 	}
422 
423 	return 0;
424 }
425 
426 static int
sli_cmd_rq_create_v2(struct sli4 * sli4,u32 num_rqs,struct sli4_queue * qs[],u32 base_cq_id,u32 header_buffer_size,u32 payload_buffer_size,struct efc_dma * dma)427 sli_cmd_rq_create_v2(struct sli4 *sli4, u32 num_rqs,
428 		     struct sli4_queue *qs[], u32 base_cq_id,
429 		     u32 header_buffer_size,
430 		     u32 payload_buffer_size, struct efc_dma *dma)
431 {
432 	struct sli4_rqst_rq_create_v2 *req = NULL;
433 	u32 i, p, offset = 0;
434 	u32 payload_size, page_count;
435 	uintptr_t addr;
436 	u32 num_pages;
437 	__le32 len;
438 
439 	page_count =  sli_page_count(qs[0]->dma.size, SLI_PAGE_SIZE) * num_rqs;
440 
441 	/* Payload length must accommodate both request and response */
442 	payload_size = max(SLI4_RQST_CMDSZ(rq_create_v2) +
443 			   SZ_DMAADDR * page_count,
444 			   sizeof(struct sli4_rsp_cmn_create_queue_set));
445 
446 	dma->size = payload_size;
447 	dma->virt = dma_alloc_coherent(&sli4->pci->dev, dma->size,
448 				       &dma->phys, GFP_KERNEL);
449 	if (!dma->virt)
450 		return -EIO;
451 
452 	memset(dma->virt, 0, payload_size);
453 
454 	req = sli_config_cmd_init(sli4, sli4->bmbx.virt, payload_size, dma);
455 	if (!req)
456 		return -EIO;
457 
458 	len =  SLI4_RQST_PYLD_LEN_VAR(rq_create_v2, SZ_DMAADDR * page_count);
459 	sli_cmd_fill_hdr(&req->hdr, SLI4_OPC_RQ_CREATE, SLI4_SUBSYSTEM_FC,
460 			 CMD_V2, len);
461 	/* Fill Payload fields */
462 	req->dim_dfd_dnb |= SLI4_RQCREATEV2_DNB;
463 	num_pages = sli_page_count(qs[0]->dma.size, SLI_PAGE_SIZE);
464 	req->num_pages = cpu_to_le16(num_pages);
465 	req->rqe_count = cpu_to_le16(qs[0]->dma.size / SLI4_RQE_SIZE);
466 	req->rqe_size_byte |= SLI4_RQE_SIZE_8;
467 	req->page_size = SLI4_RQ_PAGE_SIZE_4096;
468 	req->rq_count = num_rqs;
469 	req->base_cq_id = cpu_to_le16(base_cq_id);
470 	req->hdr_buffer_size = cpu_to_le16(header_buffer_size);
471 	req->payload_buffer_size = cpu_to_le16(payload_buffer_size);
472 
473 	for (i = 0; i < num_rqs; i++) {
474 		for (p = 0, addr = qs[i]->dma.phys; p < num_pages;
475 		     p++, addr += SLI_PAGE_SIZE) {
476 			req->page_phys_addr[offset].low =
477 					cpu_to_le32(lower_32_bits(addr));
478 			req->page_phys_addr[offset].high =
479 					cpu_to_le32(upper_32_bits(addr));
480 			offset++;
481 		}
482 	}
483 
484 	return 0;
485 }
486 
487 static void
__sli_queue_destroy(struct sli4 * sli4,struct sli4_queue * q)488 __sli_queue_destroy(struct sli4 *sli4, struct sli4_queue *q)
489 {
490 	if (!q->dma.size)
491 		return;
492 
493 	dma_free_coherent(&sli4->pci->dev, q->dma.size,
494 			  q->dma.virt, q->dma.phys);
495 	memset(&q->dma, 0, sizeof(struct efc_dma));
496 }
497 
498 int
__sli_queue_init(struct sli4 * sli4,struct sli4_queue * q,u32 qtype,size_t size,u32 n_entries,u32 align)499 __sli_queue_init(struct sli4 *sli4, struct sli4_queue *q, u32 qtype,
500 		 size_t size, u32 n_entries, u32 align)
501 {
502 	if (q->dma.virt) {
503 		efc_log_err(sli4, "%s failed\n", __func__);
504 		return -EIO;
505 	}
506 
507 	memset(q, 0, sizeof(struct sli4_queue));
508 
509 	q->dma.size = size * n_entries;
510 	q->dma.virt = dma_alloc_coherent(&sli4->pci->dev, q->dma.size,
511 					 &q->dma.phys, GFP_KERNEL);
512 	if (!q->dma.virt) {
513 		memset(&q->dma, 0, sizeof(struct efc_dma));
514 		efc_log_err(sli4, "%s allocation failed\n", SLI4_QNAME[qtype]);
515 		return -EIO;
516 	}
517 
518 	memset(q->dma.virt, 0, size * n_entries);
519 
520 	spin_lock_init(&q->lock);
521 
522 	q->type = qtype;
523 	q->size = size;
524 	q->length = n_entries;
525 
526 	if (q->type == SLI4_QTYPE_EQ || q->type == SLI4_QTYPE_CQ) {
527 		/* For prism, phase will be flipped after
528 		 * a sweep through eq and cq
529 		 */
530 		q->phase = 1;
531 	}
532 
533 	/* Limit to hwf the queue size per interrupt */
534 	q->proc_limit = n_entries / 2;
535 
536 	if (q->type == SLI4_QTYPE_EQ)
537 		q->posted_limit = q->length / 2;
538 	else
539 		q->posted_limit = 64;
540 
541 	return 0;
542 }
543 
544 int
sli_fc_rq_alloc(struct sli4 * sli4,struct sli4_queue * q,u32 n_entries,u32 buffer_size,struct sli4_queue * cq,bool is_hdr)545 sli_fc_rq_alloc(struct sli4 *sli4, struct sli4_queue *q,
546 		u32 n_entries, u32 buffer_size,
547 		struct sli4_queue *cq, bool is_hdr)
548 {
549 	if (__sli_queue_init(sli4, q, SLI4_QTYPE_RQ, SLI4_RQE_SIZE,
550 			     n_entries, SLI_PAGE_SIZE))
551 		return -EIO;
552 
553 	if (sli_cmd_rq_create_v1(sli4, sli4->bmbx.virt, &q->dma, cq->id,
554 				 buffer_size))
555 		goto error;
556 
557 	if (__sli_create_queue(sli4, q))
558 		goto error;
559 
560 	if (is_hdr && q->id & 1) {
561 		efc_log_info(sli4, "bad header RQ_ID %d\n", q->id);
562 		goto error;
563 	} else if (!is_hdr  && (q->id & 1) == 0) {
564 		efc_log_info(sli4, "bad data RQ_ID %d\n", q->id);
565 		goto error;
566 	}
567 
568 	if (is_hdr)
569 		q->u.flag |= SLI4_QUEUE_FLAG_HDR;
570 	else
571 		q->u.flag &= ~SLI4_QUEUE_FLAG_HDR;
572 
573 	return 0;
574 
575 error:
576 	__sli_queue_destroy(sli4, q);
577 	return -EIO;
578 }
579 
580 int
sli_fc_rq_set_alloc(struct sli4 * sli4,u32 num_rq_pairs,struct sli4_queue * qs[],u32 base_cq_id,u32 n_entries,u32 header_buffer_size,u32 payload_buffer_size)581 sli_fc_rq_set_alloc(struct sli4 *sli4, u32 num_rq_pairs,
582 		    struct sli4_queue *qs[], u32 base_cq_id,
583 		    u32 n_entries, u32 header_buffer_size,
584 		    u32 payload_buffer_size)
585 {
586 	u32 i;
587 	struct efc_dma dma = {0};
588 	struct sli4_rsp_cmn_create_queue_set *rsp = NULL;
589 	void __iomem *db_regaddr = NULL;
590 	u32 num_rqs = num_rq_pairs * 2;
591 
592 	for (i = 0; i < num_rqs; i++) {
593 		if (__sli_queue_init(sli4, qs[i], SLI4_QTYPE_RQ,
594 				     SLI4_RQE_SIZE, n_entries,
595 				     SLI_PAGE_SIZE)) {
596 			goto error;
597 		}
598 	}
599 
600 	if (sli_cmd_rq_create_v2(sli4, num_rqs, qs, base_cq_id,
601 				 header_buffer_size, payload_buffer_size,
602 				 &dma)) {
603 		goto error;
604 	}
605 
606 	if (sli_bmbx_command(sli4)) {
607 		efc_log_err(sli4, "bootstrap mailbox write failed RQSet\n");
608 		goto error;
609 	}
610 
611 	if (sli4->if_type == SLI4_INTF_IF_TYPE_6)
612 		db_regaddr = sli4->reg[1] + SLI4_IF6_RQ_DB_REG;
613 	else
614 		db_regaddr = sli4->reg[0] + SLI4_RQ_DB_REG;
615 
616 	rsp = dma.virt;
617 	if (rsp->hdr.status) {
618 		efc_log_err(sli4, "bad create RQSet status=%#x addl=%#x\n",
619 			    rsp->hdr.status, rsp->hdr.additional_status);
620 		goto error;
621 	}
622 
623 	for (i = 0; i < num_rqs; i++) {
624 		qs[i]->id = i + le16_to_cpu(rsp->q_id);
625 		if ((qs[i]->id & 1) == 0)
626 			qs[i]->u.flag |= SLI4_QUEUE_FLAG_HDR;
627 		else
628 			qs[i]->u.flag &= ~SLI4_QUEUE_FLAG_HDR;
629 
630 		qs[i]->db_regaddr = db_regaddr;
631 	}
632 
633 	dma_free_coherent(&sli4->pci->dev, dma.size, dma.virt, dma.phys);
634 
635 	return 0;
636 
637 error:
638 	for (i = 0; i < num_rqs; i++)
639 		__sli_queue_destroy(sli4, qs[i]);
640 
641 	if (dma.virt)
642 		dma_free_coherent(&sli4->pci->dev, dma.size, dma.virt,
643 				  dma.phys);
644 
645 	return -EIO;
646 }
647 
648 static int
sli_res_sli_config(struct sli4 * sli4,void * buf)649 sli_res_sli_config(struct sli4 *sli4, void *buf)
650 {
651 	struct sli4_cmd_sli_config *sli_config = buf;
652 
653 	/* sanity check */
654 	if (!buf || sli_config->hdr.command !=
655 		    SLI4_MBX_CMD_SLI_CONFIG) {
656 		efc_log_err(sli4, "bad parameter buf=%p cmd=%#x\n", buf,
657 			    buf ? sli_config->hdr.command : -1);
658 		return -EIO;
659 	}
660 
661 	if (le16_to_cpu(sli_config->hdr.status))
662 		return le16_to_cpu(sli_config->hdr.status);
663 
664 	if (le32_to_cpu(sli_config->dw1_flags) & SLI4_SLICONF_EMB)
665 		return sli_config->payload.embed[4];
666 
667 	efc_log_info(sli4, "external buffers not supported\n");
668 	return -EIO;
669 }
670 
671 int
__sli_create_queue(struct sli4 * sli4,struct sli4_queue * q)672 __sli_create_queue(struct sli4 *sli4, struct sli4_queue *q)
673 {
674 	struct sli4_rsp_cmn_create_queue *res_q = NULL;
675 
676 	if (sli_bmbx_command(sli4)) {
677 		efc_log_crit(sli4, "bootstrap mailbox write fail %s\n",
678 			     SLI4_QNAME[q->type]);
679 		return -EIO;
680 	}
681 	if (sli_res_sli_config(sli4, sli4->bmbx.virt)) {
682 		efc_log_err(sli4, "bad status create %s\n",
683 			    SLI4_QNAME[q->type]);
684 		return -EIO;
685 	}
686 	res_q = (void *)((u8 *)sli4->bmbx.virt +
687 			offsetof(struct sli4_cmd_sli_config, payload));
688 
689 	if (res_q->hdr.status) {
690 		efc_log_err(sli4, "bad create %s status=%#x addl=%#x\n",
691 			    SLI4_QNAME[q->type], res_q->hdr.status,
692 			    res_q->hdr.additional_status);
693 		return -EIO;
694 	}
695 	q->id = le16_to_cpu(res_q->q_id);
696 	switch (q->type) {
697 	case SLI4_QTYPE_EQ:
698 		if (sli4->if_type == SLI4_INTF_IF_TYPE_6)
699 			q->db_regaddr = sli4->reg[1] + SLI4_IF6_EQ_DB_REG;
700 		else
701 			q->db_regaddr =	sli4->reg[0] + SLI4_EQCQ_DB_REG;
702 		break;
703 	case SLI4_QTYPE_CQ:
704 		if (sli4->if_type == SLI4_INTF_IF_TYPE_6)
705 			q->db_regaddr = sli4->reg[1] + SLI4_IF6_CQ_DB_REG;
706 		else
707 			q->db_regaddr =	sli4->reg[0] + SLI4_EQCQ_DB_REG;
708 		break;
709 	case SLI4_QTYPE_MQ:
710 		if (sli4->if_type == SLI4_INTF_IF_TYPE_6)
711 			q->db_regaddr = sli4->reg[1] + SLI4_IF6_MQ_DB_REG;
712 		else
713 			q->db_regaddr =	sli4->reg[0] + SLI4_MQ_DB_REG;
714 		break;
715 	case SLI4_QTYPE_RQ:
716 		if (sli4->if_type == SLI4_INTF_IF_TYPE_6)
717 			q->db_regaddr = sli4->reg[1] + SLI4_IF6_RQ_DB_REG;
718 		else
719 			q->db_regaddr =	sli4->reg[0] + SLI4_RQ_DB_REG;
720 		break;
721 	case SLI4_QTYPE_WQ:
722 		if (sli4->if_type == SLI4_INTF_IF_TYPE_6)
723 			q->db_regaddr = sli4->reg[1] + SLI4_IF6_WQ_DB_REG;
724 		else
725 			q->db_regaddr =	sli4->reg[0] + SLI4_IO_WQ_DB_REG;
726 		break;
727 	default:
728 		break;
729 	}
730 
731 	return 0;
732 }
733 
734 int
sli_get_queue_entry_size(struct sli4 * sli4,u32 qtype)735 sli_get_queue_entry_size(struct sli4 *sli4, u32 qtype)
736 {
737 	u32 size = 0;
738 
739 	switch (qtype) {
740 	case SLI4_QTYPE_EQ:
741 		size = sizeof(u32);
742 		break;
743 	case SLI4_QTYPE_CQ:
744 		size = 16;
745 		break;
746 	case SLI4_QTYPE_MQ:
747 		size = 256;
748 		break;
749 	case SLI4_QTYPE_WQ:
750 		size = sli4->wqe_size;
751 		break;
752 	case SLI4_QTYPE_RQ:
753 		size = SLI4_RQE_SIZE;
754 		break;
755 	default:
756 		efc_log_info(sli4, "unknown queue type %d\n", qtype);
757 		return -1;
758 	}
759 	return size;
760 }
761 
762 int
sli_queue_alloc(struct sli4 * sli4,u32 qtype,struct sli4_queue * q,u32 n_entries,struct sli4_queue * assoc)763 sli_queue_alloc(struct sli4 *sli4, u32 qtype,
764 		struct sli4_queue *q, u32 n_entries,
765 		     struct sli4_queue *assoc)
766 {
767 	int size;
768 	u32 align = 0;
769 
770 	/* get queue size */
771 	size = sli_get_queue_entry_size(sli4, qtype);
772 	if (size < 0)
773 		return -EIO;
774 	align = SLI_PAGE_SIZE;
775 
776 	if (__sli_queue_init(sli4, q, qtype, size, n_entries, align))
777 		return -EIO;
778 
779 	switch (qtype) {
780 	case SLI4_QTYPE_EQ:
781 		if (!sli_cmd_common_create_eq(sli4, sli4->bmbx.virt, &q->dma) &&
782 		    !__sli_create_queue(sli4, q))
783 			return 0;
784 
785 		break;
786 	case SLI4_QTYPE_CQ:
787 		if (!sli_cmd_common_create_cq(sli4, sli4->bmbx.virt, &q->dma,
788 					      assoc ? assoc->id : 0) &&
789 		    !__sli_create_queue(sli4, q))
790 			return 0;
791 
792 		break;
793 	case SLI4_QTYPE_MQ:
794 		assoc->u.flag |= SLI4_QUEUE_FLAG_MQ;
795 		if (!sli_cmd_common_create_mq_ext(sli4, sli4->bmbx.virt,
796 						  &q->dma, assoc->id) &&
797 		    !__sli_create_queue(sli4, q))
798 			return 0;
799 
800 		break;
801 	case SLI4_QTYPE_WQ:
802 		if (!sli_cmd_wq_create(sli4, sli4->bmbx.virt, &q->dma,
803 				       assoc ? assoc->id : 0) &&
804 		    !__sli_create_queue(sli4, q))
805 			return 0;
806 
807 		break;
808 	default:
809 		efc_log_info(sli4, "unknown queue type %d\n", qtype);
810 	}
811 
812 	__sli_queue_destroy(sli4, q);
813 	return -EIO;
814 }
815 
sli_cmd_cq_set_create(struct sli4 * sli4,struct sli4_queue * qs[],u32 num_cqs,struct sli4_queue * eqs[],struct efc_dma * dma)816 static int sli_cmd_cq_set_create(struct sli4 *sli4,
817 				 struct sli4_queue *qs[], u32 num_cqs,
818 				 struct sli4_queue *eqs[],
819 				 struct efc_dma *dma)
820 {
821 	struct sli4_rqst_cmn_create_cq_set_v0 *req = NULL;
822 	uintptr_t addr;
823 	u32 i, offset = 0,  page_bytes = 0, payload_size;
824 	u32 p = 0, page_size = 0, n_cqe = 0, num_pages_cq;
825 	u32 dw5_flags = 0;
826 	u16 dw6w1_flags = 0;
827 	__le32 req_len;
828 
829 	n_cqe = qs[0]->dma.size / SLI4_CQE_BYTES;
830 	switch (n_cqe) {
831 	case 256:
832 	case 512:
833 	case 1024:
834 	case 2048:
835 		page_size = 1;
836 		break;
837 	case 4096:
838 		page_size = 2;
839 		break;
840 	default:
841 		return -EIO;
842 	}
843 
844 	page_bytes = page_size * SLI_PAGE_SIZE;
845 	num_pages_cq = sli_page_count(qs[0]->dma.size, page_bytes);
846 	payload_size = max(SLI4_RQST_CMDSZ(cmn_create_cq_set_v0) +
847 			   (SZ_DMAADDR * num_pages_cq * num_cqs),
848 			   sizeof(struct sli4_rsp_cmn_create_queue_set));
849 
850 	dma->size = payload_size;
851 	dma->virt = dma_alloc_coherent(&sli4->pci->dev, dma->size,
852 				       &dma->phys, GFP_KERNEL);
853 	if (!dma->virt)
854 		return -EIO;
855 
856 	memset(dma->virt, 0, payload_size);
857 
858 	req = sli_config_cmd_init(sli4, sli4->bmbx.virt, payload_size, dma);
859 	if (!req)
860 		return -EIO;
861 
862 	req_len = SLI4_RQST_PYLD_LEN_VAR(cmn_create_cq_set_v0,
863 					 SZ_DMAADDR * num_pages_cq * num_cqs);
864 	sli_cmd_fill_hdr(&req->hdr, SLI4_CMN_CREATE_CQ_SET, SLI4_SUBSYSTEM_FC,
865 			 CMD_V0, req_len);
866 	req->page_size = page_size;
867 
868 	req->num_pages = cpu_to_le16(num_pages_cq);
869 	switch (num_pages_cq) {
870 	case 1:
871 		dw5_flags |= SLI4_CQ_CNT_VAL(256);
872 		break;
873 	case 2:
874 		dw5_flags |= SLI4_CQ_CNT_VAL(512);
875 		break;
876 	case 4:
877 		dw5_flags |= SLI4_CQ_CNT_VAL(1024);
878 		break;
879 	case 8:
880 		dw5_flags |= SLI4_CQ_CNT_VAL(LARGE);
881 		dw6w1_flags |= (n_cqe & SLI4_CREATE_CQSETV0_CQE_COUNT);
882 		break;
883 	default:
884 		efc_log_info(sli4, "num_pages %d not valid\n", num_pages_cq);
885 		return -EIO;
886 	}
887 
888 	dw5_flags |= SLI4_CREATE_CQSETV0_EVT;
889 	dw5_flags |= SLI4_CREATE_CQSETV0_VALID;
890 	if (sli4->if_type == SLI4_INTF_IF_TYPE_6)
891 		dw5_flags |= SLI4_CREATE_CQSETV0_AUTOVALID;
892 
893 	dw6w1_flags &= ~SLI4_CREATE_CQSETV0_ARM;
894 
895 	req->dw5_flags = cpu_to_le32(dw5_flags);
896 	req->dw6w1_flags = cpu_to_le16(dw6w1_flags);
897 
898 	req->num_cq_req = cpu_to_le16(num_cqs);
899 
900 	/* Fill page addresses of all the CQs. */
901 	for (i = 0; i < num_cqs; i++) {
902 		req->eq_id[i] = cpu_to_le16(eqs[i]->id);
903 		for (p = 0, addr = qs[i]->dma.phys; p < num_pages_cq;
904 		     p++, addr += page_bytes) {
905 			req->page_phys_addr[offset].low =
906 				cpu_to_le32(lower_32_bits(addr));
907 			req->page_phys_addr[offset].high =
908 				cpu_to_le32(upper_32_bits(addr));
909 			offset++;
910 		}
911 	}
912 
913 	return 0;
914 }
915 
916 int
sli_cq_alloc_set(struct sli4 * sli4,struct sli4_queue * qs[],u32 num_cqs,u32 n_entries,struct sli4_queue * eqs[])917 sli_cq_alloc_set(struct sli4 *sli4, struct sli4_queue *qs[],
918 		 u32 num_cqs, u32 n_entries, struct sli4_queue *eqs[])
919 {
920 	u32 i;
921 	struct efc_dma dma = {0};
922 	struct sli4_rsp_cmn_create_queue_set *res;
923 	void __iomem *db_regaddr;
924 
925 	/* Align the queue DMA memory */
926 	for (i = 0; i < num_cqs; i++) {
927 		if (__sli_queue_init(sli4, qs[i], SLI4_QTYPE_CQ, SLI4_CQE_BYTES,
928 				     n_entries, SLI_PAGE_SIZE))
929 			goto error;
930 	}
931 
932 	if (sli_cmd_cq_set_create(sli4, qs, num_cqs, eqs, &dma))
933 		goto error;
934 
935 	if (sli_bmbx_command(sli4))
936 		goto error;
937 
938 	if (sli4->if_type == SLI4_INTF_IF_TYPE_6)
939 		db_regaddr = sli4->reg[1] + SLI4_IF6_CQ_DB_REG;
940 	else
941 		db_regaddr = sli4->reg[0] + SLI4_EQCQ_DB_REG;
942 
943 	res = dma.virt;
944 	if (res->hdr.status) {
945 		efc_log_err(sli4, "bad create CQSet status=%#x addl=%#x\n",
946 			    res->hdr.status, res->hdr.additional_status);
947 		goto error;
948 	}
949 
950 	/* Check if we got all requested CQs. */
951 	if (le16_to_cpu(res->num_q_allocated) != num_cqs) {
952 		efc_log_crit(sli4, "Requested count CQs doesn't match.\n");
953 		goto error;
954 	}
955 	/* Fill the resp cq ids. */
956 	for (i = 0; i < num_cqs; i++) {
957 		qs[i]->id = le16_to_cpu(res->q_id) + i;
958 		qs[i]->db_regaddr = db_regaddr;
959 	}
960 
961 	dma_free_coherent(&sli4->pci->dev, dma.size, dma.virt, dma.phys);
962 
963 	return 0;
964 
965 error:
966 	for (i = 0; i < num_cqs; i++)
967 		__sli_queue_destroy(sli4, qs[i]);
968 
969 	if (dma.virt)
970 		dma_free_coherent(&sli4->pci->dev, dma.size, dma.virt,
971 				  dma.phys);
972 
973 	return -EIO;
974 }
975 
976 static int
sli_cmd_common_destroy_q(struct sli4 * sli4,u8 opc,u8 subsystem,u16 q_id)977 sli_cmd_common_destroy_q(struct sli4 *sli4, u8 opc, u8 subsystem, u16 q_id)
978 {
979 	struct sli4_rqst_cmn_destroy_q *req;
980 
981 	/* Payload length must accommodate both request and response */
982 	req = sli_config_cmd_init(sli4, sli4->bmbx.virt,
983 				  SLI4_CFG_PYLD_LENGTH(cmn_destroy_q), NULL);
984 	if (!req)
985 		return -EIO;
986 
987 	sli_cmd_fill_hdr(&req->hdr, opc, subsystem,
988 			 CMD_V0, SLI4_RQST_PYLD_LEN(cmn_destroy_q));
989 	req->q_id = cpu_to_le16(q_id);
990 
991 	return 0;
992 }
993 
994 int
sli_queue_free(struct sli4 * sli4,struct sli4_queue * q,u32 destroy_queues,u32 free_memory)995 sli_queue_free(struct sli4 *sli4, struct sli4_queue *q,
996 	       u32 destroy_queues, u32 free_memory)
997 {
998 	int rc = 0;
999 	u8 opcode, subsystem;
1000 	struct sli4_rsp_hdr *res;
1001 
1002 	if (!q) {
1003 		efc_log_err(sli4, "bad parameter sli4=%p q=%p\n", sli4, q);
1004 		return -EIO;
1005 	}
1006 
1007 	if (!destroy_queues)
1008 		goto free_mem;
1009 
1010 	switch (q->type) {
1011 	case SLI4_QTYPE_EQ:
1012 		opcode = SLI4_CMN_DESTROY_EQ;
1013 		subsystem = SLI4_SUBSYSTEM_COMMON;
1014 		break;
1015 	case SLI4_QTYPE_CQ:
1016 		opcode = SLI4_CMN_DESTROY_CQ;
1017 		subsystem = SLI4_SUBSYSTEM_COMMON;
1018 		break;
1019 	case SLI4_QTYPE_MQ:
1020 		opcode = SLI4_CMN_DESTROY_MQ;
1021 		subsystem = SLI4_SUBSYSTEM_COMMON;
1022 		break;
1023 	case SLI4_QTYPE_WQ:
1024 		opcode = SLI4_OPC_WQ_DESTROY;
1025 		subsystem = SLI4_SUBSYSTEM_FC;
1026 		break;
1027 	case SLI4_QTYPE_RQ:
1028 		opcode = SLI4_OPC_RQ_DESTROY;
1029 		subsystem = SLI4_SUBSYSTEM_FC;
1030 		break;
1031 	default:
1032 		efc_log_info(sli4, "bad queue type %d\n", q->type);
1033 		rc = -EIO;
1034 		goto free_mem;
1035 	}
1036 
1037 	rc = sli_cmd_common_destroy_q(sli4, opcode, subsystem, q->id);
1038 	if (rc)
1039 		goto free_mem;
1040 
1041 	rc = sli_bmbx_command(sli4);
1042 	if (rc)
1043 		goto free_mem;
1044 
1045 	rc = sli_res_sli_config(sli4, sli4->bmbx.virt);
1046 	if (rc)
1047 		goto free_mem;
1048 
1049 	res = (void *)((u8 *)sli4->bmbx.virt +
1050 			     offsetof(struct sli4_cmd_sli_config, payload));
1051 	if (res->status) {
1052 		efc_log_err(sli4, "destroy %s st=%#x addl=%#x\n",
1053 			    SLI4_QNAME[q->type], res->status,
1054 			    res->additional_status);
1055 		rc = -EIO;
1056 		goto free_mem;
1057 	}
1058 
1059 free_mem:
1060 	if (free_memory)
1061 		__sli_queue_destroy(sli4, q);
1062 
1063 	return rc;
1064 }
1065 
1066 int
sli_queue_eq_arm(struct sli4 * sli4,struct sli4_queue * q,bool arm)1067 sli_queue_eq_arm(struct sli4 *sli4, struct sli4_queue *q, bool arm)
1068 {
1069 	u32 val;
1070 	unsigned long flags = 0;
1071 	u32 a = arm ? SLI4_EQCQ_ARM : SLI4_EQCQ_UNARM;
1072 
1073 	spin_lock_irqsave(&q->lock, flags);
1074 	if (sli4->if_type == SLI4_INTF_IF_TYPE_6)
1075 		val = sli_format_if6_eq_db_data(q->n_posted, q->id, a);
1076 	else
1077 		val = sli_format_eq_db_data(q->n_posted, q->id, a);
1078 
1079 	writel(val, q->db_regaddr);
1080 	q->n_posted = 0;
1081 	spin_unlock_irqrestore(&q->lock, flags);
1082 
1083 	return 0;
1084 }
1085 
1086 int
sli_queue_arm(struct sli4 * sli4,struct sli4_queue * q,bool arm)1087 sli_queue_arm(struct sli4 *sli4, struct sli4_queue *q, bool arm)
1088 {
1089 	u32 val = 0;
1090 	unsigned long flags = 0;
1091 	u32 a = arm ? SLI4_EQCQ_ARM : SLI4_EQCQ_UNARM;
1092 
1093 	spin_lock_irqsave(&q->lock, flags);
1094 
1095 	switch (q->type) {
1096 	case SLI4_QTYPE_EQ:
1097 		if (sli4->if_type == SLI4_INTF_IF_TYPE_6)
1098 			val = sli_format_if6_eq_db_data(q->n_posted, q->id, a);
1099 		else
1100 			val = sli_format_eq_db_data(q->n_posted, q->id, a);
1101 
1102 		writel(val, q->db_regaddr);
1103 		q->n_posted = 0;
1104 		break;
1105 	case SLI4_QTYPE_CQ:
1106 		if (sli4->if_type == SLI4_INTF_IF_TYPE_6)
1107 			val = sli_format_if6_cq_db_data(q->n_posted, q->id, a);
1108 		else
1109 			val = sli_format_cq_db_data(q->n_posted, q->id, a);
1110 
1111 		writel(val, q->db_regaddr);
1112 		q->n_posted = 0;
1113 		break;
1114 	default:
1115 		efc_log_info(sli4, "should only be used for EQ/CQ, not %s\n",
1116 			     SLI4_QNAME[q->type]);
1117 	}
1118 
1119 	spin_unlock_irqrestore(&q->lock, flags);
1120 
1121 	return 0;
1122 }
1123 
1124 int
sli_wq_write(struct sli4 * sli4,struct sli4_queue * q,u8 * entry)1125 sli_wq_write(struct sli4 *sli4, struct sli4_queue *q, u8 *entry)
1126 {
1127 	u8 *qe = q->dma.virt;
1128 	u32 qindex;
1129 	u32 val = 0;
1130 
1131 	qindex = q->index;
1132 	qe += q->index * q->size;
1133 
1134 	if (sli4->params.perf_wq_id_association)
1135 		sli_set_wq_id_association(entry, q->id);
1136 
1137 	memcpy(qe, entry, q->size);
1138 	val = sli_format_wq_db_data(q->id);
1139 
1140 	writel(val, q->db_regaddr);
1141 	q->index = (q->index + 1) & (q->length - 1);
1142 
1143 	return qindex;
1144 }
1145 
1146 int
sli_mq_write(struct sli4 * sli4,struct sli4_queue * q,u8 * entry)1147 sli_mq_write(struct sli4 *sli4, struct sli4_queue *q, u8 *entry)
1148 {
1149 	u8 *qe = q->dma.virt;
1150 	u32 qindex;
1151 	u32 val = 0;
1152 	unsigned long flags;
1153 
1154 	spin_lock_irqsave(&q->lock, flags);
1155 	qindex = q->index;
1156 	qe += q->index * q->size;
1157 
1158 	memcpy(qe, entry, q->size);
1159 	val = sli_format_mq_db_data(q->id);
1160 	writel(val, q->db_regaddr);
1161 	q->index = (q->index + 1) & (q->length - 1);
1162 	spin_unlock_irqrestore(&q->lock, flags);
1163 
1164 	return qindex;
1165 }
1166 
1167 int
sli_rq_write(struct sli4 * sli4,struct sli4_queue * q,u8 * entry)1168 sli_rq_write(struct sli4 *sli4, struct sli4_queue *q, u8 *entry)
1169 {
1170 	u8 *qe = q->dma.virt;
1171 	u32 qindex;
1172 	u32 val = 0;
1173 
1174 	qindex = q->index;
1175 	qe += q->index * q->size;
1176 
1177 	memcpy(qe, entry, q->size);
1178 
1179 	/*
1180 	 * In RQ-pair, an RQ either contains the FC header
1181 	 * (i.e. is_hdr == TRUE) or the payload.
1182 	 *
1183 	 * Don't ring doorbell for payload RQ
1184 	 */
1185 	if (!(q->u.flag & SLI4_QUEUE_FLAG_HDR))
1186 		goto skip;
1187 
1188 	val = sli_format_rq_db_data(q->id);
1189 	writel(val, q->db_regaddr);
1190 skip:
1191 	q->index = (q->index + 1) & (q->length - 1);
1192 
1193 	return qindex;
1194 }
1195 
1196 int
sli_eq_read(struct sli4 * sli4,struct sli4_queue * q,u8 * entry)1197 sli_eq_read(struct sli4 *sli4, struct sli4_queue *q, u8 *entry)
1198 {
1199 	u8 *qe = q->dma.virt;
1200 	unsigned long flags = 0;
1201 	u16 wflags = 0;
1202 
1203 	spin_lock_irqsave(&q->lock, flags);
1204 
1205 	qe += q->index * q->size;
1206 
1207 	/* Check if eqe is valid */
1208 	wflags = le16_to_cpu(((struct sli4_eqe *)qe)->dw0w0_flags);
1209 
1210 	if ((wflags & SLI4_EQE_VALID) != q->phase) {
1211 		spin_unlock_irqrestore(&q->lock, flags);
1212 		return -EIO;
1213 	}
1214 
1215 	if (sli4->if_type != SLI4_INTF_IF_TYPE_6) {
1216 		wflags &= ~SLI4_EQE_VALID;
1217 		((struct sli4_eqe *)qe)->dw0w0_flags = cpu_to_le16(wflags);
1218 	}
1219 
1220 	memcpy(entry, qe, q->size);
1221 	q->index = (q->index + 1) & (q->length - 1);
1222 	q->n_posted++;
1223 	/*
1224 	 * For prism, the phase value will be used
1225 	 * to check the validity of eq/cq entries.
1226 	 * The value toggles after a complete sweep
1227 	 * through the queue.
1228 	 */
1229 
1230 	if (sli4->if_type == SLI4_INTF_IF_TYPE_6 && q->index == 0)
1231 		q->phase ^= (u16)0x1;
1232 
1233 	spin_unlock_irqrestore(&q->lock, flags);
1234 
1235 	return 0;
1236 }
1237 
1238 int
sli_cq_read(struct sli4 * sli4,struct sli4_queue * q,u8 * entry)1239 sli_cq_read(struct sli4 *sli4, struct sli4_queue *q, u8 *entry)
1240 {
1241 	u8 *qe = q->dma.virt;
1242 	unsigned long flags = 0;
1243 	u32 dwflags = 0;
1244 	bool valid_bit_set;
1245 
1246 	spin_lock_irqsave(&q->lock, flags);
1247 
1248 	qe += q->index * q->size;
1249 
1250 	/* Check if cqe is valid */
1251 	dwflags = le32_to_cpu(((struct sli4_mcqe *)qe)->dw3_flags);
1252 	valid_bit_set = (dwflags & SLI4_MCQE_VALID) != 0;
1253 
1254 	if (valid_bit_set != q->phase) {
1255 		spin_unlock_irqrestore(&q->lock, flags);
1256 		return -EIO;
1257 	}
1258 
1259 	if (sli4->if_type != SLI4_INTF_IF_TYPE_6) {
1260 		dwflags &= ~SLI4_MCQE_VALID;
1261 		((struct sli4_mcqe *)qe)->dw3_flags = cpu_to_le32(dwflags);
1262 	}
1263 
1264 	memcpy(entry, qe, q->size);
1265 	q->index = (q->index + 1) & (q->length - 1);
1266 	q->n_posted++;
1267 	/*
1268 	 * For prism, the phase value will be used
1269 	 * to check the validity of eq/cq entries.
1270 	 * The value toggles after a complete sweep
1271 	 * through the queue.
1272 	 */
1273 
1274 	if (sli4->if_type == SLI4_INTF_IF_TYPE_6 && q->index == 0)
1275 		q->phase ^= (u16)0x1;
1276 
1277 	spin_unlock_irqrestore(&q->lock, flags);
1278 
1279 	return 0;
1280 }
1281 
1282 int
sli_mq_read(struct sli4 * sli4,struct sli4_queue * q,u8 * entry)1283 sli_mq_read(struct sli4 *sli4, struct sli4_queue *q, u8 *entry)
1284 {
1285 	u8 *qe = q->dma.virt;
1286 	unsigned long flags = 0;
1287 
1288 	spin_lock_irqsave(&q->lock, flags);
1289 
1290 	qe += q->u.r_idx * q->size;
1291 
1292 	/* Check if mqe is valid */
1293 	if (q->index == q->u.r_idx) {
1294 		spin_unlock_irqrestore(&q->lock, flags);
1295 		return -EIO;
1296 	}
1297 
1298 	memcpy(entry, qe, q->size);
1299 	q->u.r_idx = (q->u.r_idx + 1) & (q->length - 1);
1300 
1301 	spin_unlock_irqrestore(&q->lock, flags);
1302 
1303 	return 0;
1304 }
1305 
1306 int
sli_eq_parse(struct sli4 * sli4,u8 * buf,u16 * cq_id)1307 sli_eq_parse(struct sli4 *sli4, u8 *buf, u16 *cq_id)
1308 {
1309 	struct sli4_eqe *eqe = (void *)buf;
1310 	int rc = 0;
1311 	u16 flags = 0;
1312 	u16 majorcode;
1313 	u16 minorcode;
1314 
1315 	if (!buf || !cq_id) {
1316 		efc_log_err(sli4, "bad parameters sli4=%p buf=%p cq_id=%p\n",
1317 			    sli4, buf, cq_id);
1318 		return -EIO;
1319 	}
1320 
1321 	flags = le16_to_cpu(eqe->dw0w0_flags);
1322 	majorcode = (flags & SLI4_EQE_MJCODE) >> 1;
1323 	minorcode = (flags & SLI4_EQE_MNCODE) >> 4;
1324 	switch (majorcode) {
1325 	case SLI4_MAJOR_CODE_STANDARD:
1326 		*cq_id = le16_to_cpu(eqe->resource_id);
1327 		break;
1328 	case SLI4_MAJOR_CODE_SENTINEL:
1329 		efc_log_info(sli4, "sentinel EQE\n");
1330 		rc = SLI4_EQE_STATUS_EQ_FULL;
1331 		break;
1332 	default:
1333 		efc_log_info(sli4, "Unsupported EQE: major %x minor %x\n",
1334 			     majorcode, minorcode);
1335 		rc = -EIO;
1336 	}
1337 
1338 	return rc;
1339 }
1340 
1341 int
sli_cq_parse(struct sli4 * sli4,struct sli4_queue * cq,u8 * cqe,enum sli4_qentry * etype,u16 * q_id)1342 sli_cq_parse(struct sli4 *sli4, struct sli4_queue *cq, u8 *cqe,
1343 	     enum sli4_qentry *etype, u16 *q_id)
1344 {
1345 	int rc = 0;
1346 
1347 	if (!cq || !cqe || !etype) {
1348 		efc_log_err(sli4, "bad params sli4=%p cq=%p cqe=%p etype=%p q_id=%p\n",
1349 			    sli4, cq, cqe, etype, q_id);
1350 		return -EINVAL;
1351 	}
1352 
1353 	/* Parse a CQ entry to retrieve the event type and the queue id */
1354 	if (cq->u.flag & SLI4_QUEUE_FLAG_MQ) {
1355 		struct sli4_mcqe	*mcqe = (void *)cqe;
1356 
1357 		if (le32_to_cpu(mcqe->dw3_flags) & SLI4_MCQE_AE) {
1358 			*etype = SLI4_QENTRY_ASYNC;
1359 		} else {
1360 			*etype = SLI4_QENTRY_MQ;
1361 			rc = sli_cqe_mq(sli4, mcqe);
1362 		}
1363 		*q_id = -1;
1364 	} else {
1365 		rc = sli_fc_cqe_parse(sli4, cq, cqe, etype, q_id);
1366 	}
1367 
1368 	return rc;
1369 }
1370 
1371 int
sli_abort_wqe(struct sli4 * sli,void * buf,enum sli4_abort_type type,bool send_abts,u32 ids,u32 mask,u16 tag,u16 cq_id)1372 sli_abort_wqe(struct sli4 *sli, void *buf, enum sli4_abort_type type,
1373 	      bool send_abts, u32 ids, u32 mask, u16 tag, u16 cq_id)
1374 {
1375 	struct sli4_abort_wqe *abort = buf;
1376 
1377 	memset(buf, 0, sli->wqe_size);
1378 
1379 	switch (type) {
1380 	case SLI4_ABORT_XRI:
1381 		abort->criteria = SLI4_ABORT_CRITERIA_XRI_TAG;
1382 		if (mask) {
1383 			efc_log_warn(sli, "%#x aborting XRI %#x warning non-zero mask",
1384 				     mask, ids);
1385 			mask = 0;
1386 		}
1387 		break;
1388 	case SLI4_ABORT_ABORT_ID:
1389 		abort->criteria = SLI4_ABORT_CRITERIA_ABORT_TAG;
1390 		break;
1391 	case SLI4_ABORT_REQUEST_ID:
1392 		abort->criteria = SLI4_ABORT_CRITERIA_REQUEST_TAG;
1393 		break;
1394 	default:
1395 		efc_log_info(sli, "unsupported type %#x\n", type);
1396 		return -EIO;
1397 	}
1398 
1399 	abort->ia_ir_byte |= send_abts ? 0 : 1;
1400 
1401 	/* Suppress ABTS retries */
1402 	abort->ia_ir_byte |= SLI4_ABRT_WQE_IR;
1403 
1404 	abort->t_mask = cpu_to_le32(mask);
1405 	abort->t_tag  = cpu_to_le32(ids);
1406 	abort->command = SLI4_WQE_ABORT;
1407 	abort->request_tag = cpu_to_le16(tag);
1408 
1409 	abort->dw10w0_flags = cpu_to_le16(SLI4_ABRT_WQE_QOSD);
1410 
1411 	abort->cq_id = cpu_to_le16(cq_id);
1412 	abort->cmdtype_wqec_byte |= SLI4_CMD_ABORT_WQE;
1413 
1414 	return 0;
1415 }
1416 
1417 int
sli_els_request64_wqe(struct sli4 * sli,void * buf,struct efc_dma * sgl,struct sli_els_params * params)1418 sli_els_request64_wqe(struct sli4 *sli, void *buf, struct efc_dma *sgl,
1419 		      struct sli_els_params *params)
1420 {
1421 	struct sli4_els_request64_wqe *els = buf;
1422 	struct sli4_sge *sge = sgl->virt;
1423 	bool is_fabric = false;
1424 	struct sli4_bde *bptr;
1425 
1426 	memset(buf, 0, sli->wqe_size);
1427 
1428 	bptr = &els->els_request_payload;
1429 	if (sli->params.sgl_pre_registered) {
1430 		els->qosd_xbl_hlm_iod_dbde_wqes &= ~SLI4_REQ_WQE_XBL;
1431 
1432 		els->qosd_xbl_hlm_iod_dbde_wqes |= SLI4_REQ_WQE_DBDE;
1433 		bptr->bde_type_buflen =
1434 			cpu_to_le32((SLI4_BDE_TYPE_VAL(64)) |
1435 				    (params->xmit_len & SLI4_BDE_LEN_MASK));
1436 
1437 		bptr->u.data.low  = sge[0].buffer_address_low;
1438 		bptr->u.data.high = sge[0].buffer_address_high;
1439 	} else {
1440 		els->qosd_xbl_hlm_iod_dbde_wqes |= SLI4_REQ_WQE_XBL;
1441 
1442 		bptr->bde_type_buflen =
1443 			cpu_to_le32((SLI4_BDE_TYPE_VAL(BLP)) |
1444 				    ((2 * sizeof(struct sli4_sge)) &
1445 				     SLI4_BDE_LEN_MASK));
1446 		bptr->u.blp.low  = cpu_to_le32(lower_32_bits(sgl->phys));
1447 		bptr->u.blp.high = cpu_to_le32(upper_32_bits(sgl->phys));
1448 	}
1449 
1450 	els->els_request_payload_length = cpu_to_le32(params->xmit_len);
1451 	els->max_response_payload_length = cpu_to_le32(params->rsp_len);
1452 
1453 	els->xri_tag = cpu_to_le16(params->xri);
1454 	els->timer = params->timeout;
1455 	els->class_byte |= SLI4_GENERIC_CLASS_CLASS_3;
1456 
1457 	els->command = SLI4_WQE_ELS_REQUEST64;
1458 
1459 	els->request_tag = cpu_to_le16(params->tag);
1460 
1461 	els->qosd_xbl_hlm_iod_dbde_wqes |= SLI4_REQ_WQE_IOD;
1462 
1463 	els->qosd_xbl_hlm_iod_dbde_wqes |= SLI4_REQ_WQE_QOSD;
1464 
1465 	/* figure out the ELS_ID value from the request buffer */
1466 
1467 	switch (params->cmd) {
1468 	case ELS_LOGO:
1469 		els->cmdtype_elsid_byte |=
1470 			SLI4_ELS_REQUEST64_LOGO << SLI4_REQ_WQE_ELSID_SHFT;
1471 		if (params->rpi_registered) {
1472 			els->ct_byte |=
1473 			SLI4_GENERIC_CONTEXT_RPI << SLI4_REQ_WQE_CT_SHFT;
1474 			els->context_tag = cpu_to_le16(params->rpi);
1475 		} else {
1476 			els->ct_byte |=
1477 			SLI4_GENERIC_CONTEXT_VPI << SLI4_REQ_WQE_CT_SHFT;
1478 			els->context_tag = cpu_to_le16(params->vpi);
1479 		}
1480 		if (params->d_id == FC_FID_FLOGI)
1481 			is_fabric = true;
1482 		break;
1483 	case ELS_FDISC:
1484 		if (params->d_id == FC_FID_FLOGI)
1485 			is_fabric = true;
1486 		if (params->s_id == 0) {
1487 			els->cmdtype_elsid_byte |=
1488 			SLI4_ELS_REQUEST64_FDISC << SLI4_REQ_WQE_ELSID_SHFT;
1489 			is_fabric = true;
1490 		} else {
1491 			els->cmdtype_elsid_byte |=
1492 			SLI4_ELS_REQUEST64_OTHER << SLI4_REQ_WQE_ELSID_SHFT;
1493 		}
1494 		els->ct_byte |=
1495 			SLI4_GENERIC_CONTEXT_VPI << SLI4_REQ_WQE_CT_SHFT;
1496 		els->context_tag = cpu_to_le16(params->vpi);
1497 		els->sid_sp_dword |= cpu_to_le32(1 << SLI4_REQ_WQE_SP_SHFT);
1498 		break;
1499 	case ELS_FLOGI:
1500 		els->ct_byte |=
1501 			SLI4_GENERIC_CONTEXT_VPI << SLI4_REQ_WQE_CT_SHFT;
1502 		els->context_tag = cpu_to_le16(params->vpi);
1503 		/*
1504 		 * Set SP here ... we haven't done a REG_VPI yet
1505 		 * need to maybe not set this when we have
1506 		 * completed VFI/VPI registrations ...
1507 		 *
1508 		 * Use the FC_ID of the SPORT if it has been allocated,
1509 		 * otherwise use an S_ID of zero.
1510 		 */
1511 		els->sid_sp_dword |= cpu_to_le32(1 << SLI4_REQ_WQE_SP_SHFT);
1512 		if (params->s_id != U32_MAX)
1513 			els->sid_sp_dword |= cpu_to_le32(params->s_id);
1514 		break;
1515 	case ELS_PLOGI:
1516 		els->cmdtype_elsid_byte |=
1517 			SLI4_ELS_REQUEST64_PLOGI << SLI4_REQ_WQE_ELSID_SHFT;
1518 		els->ct_byte |=
1519 			SLI4_GENERIC_CONTEXT_VPI << SLI4_REQ_WQE_CT_SHFT;
1520 		els->context_tag = cpu_to_le16(params->vpi);
1521 		break;
1522 	case ELS_SCR:
1523 		els->cmdtype_elsid_byte |=
1524 			SLI4_ELS_REQUEST64_OTHER << SLI4_REQ_WQE_ELSID_SHFT;
1525 		els->ct_byte |=
1526 			SLI4_GENERIC_CONTEXT_VPI << SLI4_REQ_WQE_CT_SHFT;
1527 		els->context_tag = cpu_to_le16(params->vpi);
1528 		break;
1529 	default:
1530 		els->cmdtype_elsid_byte |=
1531 			SLI4_ELS_REQUEST64_OTHER << SLI4_REQ_WQE_ELSID_SHFT;
1532 		if (params->rpi_registered) {
1533 			els->ct_byte |= (SLI4_GENERIC_CONTEXT_RPI <<
1534 					 SLI4_REQ_WQE_CT_SHFT);
1535 			els->context_tag = cpu_to_le16(params->vpi);
1536 		} else {
1537 			els->ct_byte |=
1538 			SLI4_GENERIC_CONTEXT_VPI << SLI4_REQ_WQE_CT_SHFT;
1539 			els->context_tag = cpu_to_le16(params->vpi);
1540 		}
1541 		break;
1542 	}
1543 
1544 	if (is_fabric)
1545 		els->cmdtype_elsid_byte |= SLI4_ELS_REQUEST64_CMD_FABRIC;
1546 	else
1547 		els->cmdtype_elsid_byte |= SLI4_ELS_REQUEST64_CMD_NON_FABRIC;
1548 
1549 	els->cq_id = cpu_to_le16(SLI4_CQ_DEFAULT);
1550 
1551 	if (((els->ct_byte & SLI4_REQ_WQE_CT) >> SLI4_REQ_WQE_CT_SHFT) !=
1552 					SLI4_GENERIC_CONTEXT_RPI)
1553 		els->remote_id_dword = cpu_to_le32(params->d_id);
1554 
1555 	if (((els->ct_byte & SLI4_REQ_WQE_CT) >> SLI4_REQ_WQE_CT_SHFT) ==
1556 					SLI4_GENERIC_CONTEXT_VPI)
1557 		els->temporary_rpi = cpu_to_le16(params->rpi);
1558 
1559 	return 0;
1560 }
1561 
1562 int
sli_fcp_icmnd64_wqe(struct sli4 * sli,void * buf,struct efc_dma * sgl,u16 xri,u16 tag,u16 cq_id,u32 rpi,u32 rnode_fcid,u8 timeout)1563 sli_fcp_icmnd64_wqe(struct sli4 *sli, void *buf, struct efc_dma *sgl, u16 xri,
1564 		    u16 tag, u16 cq_id, u32 rpi, u32 rnode_fcid, u8 timeout)
1565 {
1566 	struct sli4_fcp_icmnd64_wqe *icmnd = buf;
1567 	struct sli4_sge *sge = NULL;
1568 	struct sli4_bde *bptr;
1569 	u32 len;
1570 
1571 	memset(buf, 0, sli->wqe_size);
1572 
1573 	if (!sgl || !sgl->virt) {
1574 		efc_log_err(sli, "bad parameter sgl=%p virt=%p\n",
1575 			    sgl, sgl ? sgl->virt : NULL);
1576 		return -EIO;
1577 	}
1578 	sge = sgl->virt;
1579 	bptr = &icmnd->bde;
1580 	if (sli->params.sgl_pre_registered) {
1581 		icmnd->qosd_xbl_hlm_iod_dbde_wqes &= ~SLI4_ICMD_WQE_XBL;
1582 
1583 		icmnd->qosd_xbl_hlm_iod_dbde_wqes |= SLI4_ICMD_WQE_DBDE;
1584 		bptr->bde_type_buflen =
1585 			cpu_to_le32((SLI4_BDE_TYPE_VAL(64)) |
1586 				    (le32_to_cpu(sge[0].buffer_length) &
1587 				     SLI4_BDE_LEN_MASK));
1588 
1589 		bptr->u.data.low  = sge[0].buffer_address_low;
1590 		bptr->u.data.high = sge[0].buffer_address_high;
1591 	} else {
1592 		icmnd->qosd_xbl_hlm_iod_dbde_wqes |= SLI4_ICMD_WQE_XBL;
1593 
1594 		bptr->bde_type_buflen =
1595 			cpu_to_le32((SLI4_BDE_TYPE_VAL(BLP)) |
1596 				    (sgl->size & SLI4_BDE_LEN_MASK));
1597 
1598 		bptr->u.blp.low  = cpu_to_le32(lower_32_bits(sgl->phys));
1599 		bptr->u.blp.high = cpu_to_le32(upper_32_bits(sgl->phys));
1600 	}
1601 
1602 	len = le32_to_cpu(sge[0].buffer_length) +
1603 	      le32_to_cpu(sge[1].buffer_length);
1604 	icmnd->payload_offset_length = cpu_to_le16(len);
1605 	icmnd->xri_tag = cpu_to_le16(xri);
1606 	icmnd->context_tag = cpu_to_le16(rpi);
1607 	icmnd->timer = timeout;
1608 
1609 	/* WQE word 4 contains read transfer length */
1610 	icmnd->class_pu_byte |= 2 << SLI4_ICMD_WQE_PU_SHFT;
1611 	icmnd->class_pu_byte |= SLI4_GENERIC_CLASS_CLASS_3;
1612 	icmnd->command = SLI4_WQE_FCP_ICMND64;
1613 	icmnd->dif_ct_bs_byte |=
1614 		SLI4_GENERIC_CONTEXT_RPI << SLI4_ICMD_WQE_CT_SHFT;
1615 
1616 	icmnd->abort_tag = cpu_to_le32(xri);
1617 
1618 	icmnd->request_tag = cpu_to_le16(tag);
1619 	icmnd->len_loc1_byte |= SLI4_ICMD_WQE_LEN_LOC_BIT1;
1620 	icmnd->qosd_xbl_hlm_iod_dbde_wqes |= SLI4_ICMD_WQE_LEN_LOC_BIT2;
1621 	icmnd->cmd_type_byte |= SLI4_CMD_FCP_ICMND64_WQE;
1622 	icmnd->cq_id = cpu_to_le16(cq_id);
1623 
1624 	return  0;
1625 }
1626 
1627 int
sli_fcp_iread64_wqe(struct sli4 * sli,void * buf,struct efc_dma * sgl,u32 first_data_sge,u32 xfer_len,u16 xri,u16 tag,u16 cq_id,u32 rpi,u32 rnode_fcid,u8 dif,u8 bs,u8 timeout)1628 sli_fcp_iread64_wqe(struct sli4 *sli, void *buf, struct efc_dma *sgl,
1629 		    u32 first_data_sge, u32 xfer_len, u16 xri, u16 tag,
1630 		    u16 cq_id, u32 rpi, u32 rnode_fcid,
1631 		    u8 dif, u8 bs, u8 timeout)
1632 {
1633 	struct sli4_fcp_iread64_wqe *iread = buf;
1634 	struct sli4_sge *sge = NULL;
1635 	struct sli4_bde *bptr;
1636 	u32 sge_flags, len;
1637 
1638 	memset(buf, 0, sli->wqe_size);
1639 
1640 	if (!sgl || !sgl->virt) {
1641 		efc_log_err(sli, "bad parameter sgl=%p virt=%p\n",
1642 			    sgl, sgl ? sgl->virt : NULL);
1643 		return -EIO;
1644 	}
1645 
1646 	sge = sgl->virt;
1647 	bptr = &iread->bde;
1648 	if (sli->params.sgl_pre_registered) {
1649 		iread->qosd_xbl_hlm_iod_dbde_wqes &= ~SLI4_IR_WQE_XBL;
1650 
1651 		iread->qosd_xbl_hlm_iod_dbde_wqes |= SLI4_IR_WQE_DBDE;
1652 
1653 		bptr->bde_type_buflen =
1654 			cpu_to_le32((SLI4_BDE_TYPE_VAL(64)) |
1655 				    (le32_to_cpu(sge[0].buffer_length) &
1656 				     SLI4_BDE_LEN_MASK));
1657 
1658 		bptr->u.blp.low  = sge[0].buffer_address_low;
1659 		bptr->u.blp.high = sge[0].buffer_address_high;
1660 	} else {
1661 		iread->qosd_xbl_hlm_iod_dbde_wqes |= SLI4_IR_WQE_XBL;
1662 
1663 		bptr->bde_type_buflen =
1664 			cpu_to_le32((SLI4_BDE_TYPE_VAL(BLP)) |
1665 				    (sgl->size & SLI4_BDE_LEN_MASK));
1666 
1667 		bptr->u.blp.low  =
1668 				cpu_to_le32(lower_32_bits(sgl->phys));
1669 		bptr->u.blp.high =
1670 				cpu_to_le32(upper_32_bits(sgl->phys));
1671 
1672 		/*
1673 		 * fill out fcp_cmnd buffer len and change resp buffer to be of
1674 		 * type "skip" (note: response will still be written to sge[1]
1675 		 * if necessary)
1676 		 */
1677 		len = le32_to_cpu(sge[0].buffer_length);
1678 		iread->fcp_cmd_buffer_length = cpu_to_le16(len);
1679 
1680 		sge_flags = le32_to_cpu(sge[1].dw2_flags);
1681 		sge_flags &= (~SLI4_SGE_TYPE_MASK);
1682 		sge_flags |= (SLI4_SGE_TYPE_SKIP << SLI4_SGE_TYPE_SHIFT);
1683 		sge[1].dw2_flags = cpu_to_le32(sge_flags);
1684 	}
1685 
1686 	len = le32_to_cpu(sge[0].buffer_length) +
1687 	      le32_to_cpu(sge[1].buffer_length);
1688 	iread->payload_offset_length = cpu_to_le16(len);
1689 	iread->total_transfer_length = cpu_to_le32(xfer_len);
1690 
1691 	iread->xri_tag = cpu_to_le16(xri);
1692 	iread->context_tag = cpu_to_le16(rpi);
1693 
1694 	iread->timer = timeout;
1695 
1696 	/* WQE word 4 contains read transfer length */
1697 	iread->class_pu_byte |= 2 << SLI4_IR_WQE_PU_SHFT;
1698 	iread->class_pu_byte |= SLI4_GENERIC_CLASS_CLASS_3;
1699 	iread->command = SLI4_WQE_FCP_IREAD64;
1700 	iread->dif_ct_bs_byte |=
1701 		SLI4_GENERIC_CONTEXT_RPI << SLI4_IR_WQE_CT_SHFT;
1702 	iread->dif_ct_bs_byte |= dif;
1703 	iread->dif_ct_bs_byte  |= bs << SLI4_IR_WQE_BS_SHFT;
1704 
1705 	iread->abort_tag = cpu_to_le32(xri);
1706 
1707 	iread->request_tag = cpu_to_le16(tag);
1708 	iread->len_loc1_byte |= SLI4_IR_WQE_LEN_LOC_BIT1;
1709 	iread->qosd_xbl_hlm_iod_dbde_wqes |= SLI4_IR_WQE_LEN_LOC_BIT2;
1710 	iread->qosd_xbl_hlm_iod_dbde_wqes |= SLI4_IR_WQE_IOD;
1711 	iread->cmd_type_byte |= SLI4_CMD_FCP_IREAD64_WQE;
1712 	iread->cq_id = cpu_to_le16(cq_id);
1713 
1714 	if (sli->params.perf_hint) {
1715 		bptr = &iread->first_data_bde;
1716 		bptr->bde_type_buflen =	cpu_to_le32((SLI4_BDE_TYPE_VAL(64)) |
1717 			  (le32_to_cpu(sge[first_data_sge].buffer_length) &
1718 			     SLI4_BDE_LEN_MASK));
1719 		bptr->u.data.low =
1720 			sge[first_data_sge].buffer_address_low;
1721 		bptr->u.data.high =
1722 			sge[first_data_sge].buffer_address_high;
1723 	}
1724 
1725 	return  0;
1726 }
1727 
1728 int
sli_fcp_iwrite64_wqe(struct sli4 * sli,void * buf,struct efc_dma * sgl,u32 first_data_sge,u32 xfer_len,u32 first_burst,u16 xri,u16 tag,u16 cq_id,u32 rpi,u32 rnode_fcid,u8 dif,u8 bs,u8 timeout)1729 sli_fcp_iwrite64_wqe(struct sli4 *sli, void *buf, struct efc_dma *sgl,
1730 		     u32 first_data_sge, u32 xfer_len,
1731 		     u32 first_burst, u16 xri, u16 tag,
1732 		     u16 cq_id, u32 rpi,
1733 		     u32 rnode_fcid,
1734 		     u8 dif, u8 bs, u8 timeout)
1735 {
1736 	struct sli4_fcp_iwrite64_wqe *iwrite = buf;
1737 	struct sli4_sge *sge = NULL;
1738 	struct sli4_bde *bptr;
1739 	u32 sge_flags, min, len;
1740 
1741 	memset(buf, 0, sli->wqe_size);
1742 
1743 	if (!sgl || !sgl->virt) {
1744 		efc_log_err(sli, "bad parameter sgl=%p virt=%p\n",
1745 			    sgl, sgl ? sgl->virt : NULL);
1746 		return -EIO;
1747 	}
1748 	sge = sgl->virt;
1749 	bptr = &iwrite->bde;
1750 	if (sli->params.sgl_pre_registered) {
1751 		iwrite->qosd_xbl_hlm_iod_dbde_wqes &= ~SLI4_IWR_WQE_XBL;
1752 
1753 		iwrite->qosd_xbl_hlm_iod_dbde_wqes |= SLI4_IWR_WQE_DBDE;
1754 		bptr->bde_type_buflen = cpu_to_le32((SLI4_BDE_TYPE_VAL(64)) |
1755 		       (le32_to_cpu(sge[0].buffer_length) & SLI4_BDE_LEN_MASK));
1756 		bptr->u.data.low  = sge[0].buffer_address_low;
1757 		bptr->u.data.high = sge[0].buffer_address_high;
1758 	} else {
1759 		iwrite->qosd_xbl_hlm_iod_dbde_wqes |= SLI4_IWR_WQE_XBL;
1760 
1761 		bptr->bde_type_buflen =	cpu_to_le32((SLI4_BDE_TYPE_VAL(64)) |
1762 					(sgl->size & SLI4_BDE_LEN_MASK));
1763 
1764 		bptr->u.blp.low  = cpu_to_le32(lower_32_bits(sgl->phys));
1765 		bptr->u.blp.high = cpu_to_le32(upper_32_bits(sgl->phys));
1766 
1767 		/*
1768 		 * fill out fcp_cmnd buffer len and change resp buffer to be of
1769 		 * type "skip" (note: response will still be written to sge[1]
1770 		 * if necessary)
1771 		 */
1772 		len = le32_to_cpu(sge[0].buffer_length);
1773 		iwrite->fcp_cmd_buffer_length = cpu_to_le16(len);
1774 		sge_flags = le32_to_cpu(sge[1].dw2_flags);
1775 		sge_flags &= ~SLI4_SGE_TYPE_MASK;
1776 		sge_flags |= (SLI4_SGE_TYPE_SKIP << SLI4_SGE_TYPE_SHIFT);
1777 		sge[1].dw2_flags = cpu_to_le32(sge_flags);
1778 	}
1779 
1780 	len = le32_to_cpu(sge[0].buffer_length) +
1781 	      le32_to_cpu(sge[1].buffer_length);
1782 	iwrite->payload_offset_length = cpu_to_le16(len);
1783 	iwrite->total_transfer_length = cpu_to_le16(xfer_len);
1784 	min = (xfer_len < first_burst) ? xfer_len : first_burst;
1785 	iwrite->initial_transfer_length = cpu_to_le16(min);
1786 
1787 	iwrite->xri_tag = cpu_to_le16(xri);
1788 	iwrite->context_tag = cpu_to_le16(rpi);
1789 
1790 	iwrite->timer = timeout;
1791 	/* WQE word 4 contains read transfer length */
1792 	iwrite->class_pu_byte |= 2 << SLI4_IWR_WQE_PU_SHFT;
1793 	iwrite->class_pu_byte |= SLI4_GENERIC_CLASS_CLASS_3;
1794 	iwrite->command = SLI4_WQE_FCP_IWRITE64;
1795 	iwrite->dif_ct_bs_byte |=
1796 			SLI4_GENERIC_CONTEXT_RPI << SLI4_IWR_WQE_CT_SHFT;
1797 	iwrite->dif_ct_bs_byte |= dif;
1798 	iwrite->dif_ct_bs_byte |= bs << SLI4_IWR_WQE_BS_SHFT;
1799 
1800 	iwrite->abort_tag = cpu_to_le32(xri);
1801 
1802 	iwrite->request_tag = cpu_to_le16(tag);
1803 	iwrite->len_loc1_byte |= SLI4_IWR_WQE_LEN_LOC_BIT1;
1804 	iwrite->qosd_xbl_hlm_iod_dbde_wqes |= SLI4_IWR_WQE_LEN_LOC_BIT2;
1805 	iwrite->cmd_type_byte |= SLI4_CMD_FCP_IWRITE64_WQE;
1806 	iwrite->cq_id = cpu_to_le16(cq_id);
1807 
1808 	if (sli->params.perf_hint) {
1809 		bptr = &iwrite->first_data_bde;
1810 
1811 		bptr->bde_type_buflen =	cpu_to_le32((SLI4_BDE_TYPE_VAL(64)) |
1812 			 (le32_to_cpu(sge[first_data_sge].buffer_length) &
1813 			     SLI4_BDE_LEN_MASK));
1814 
1815 		bptr->u.data.low = sge[first_data_sge].buffer_address_low;
1816 		bptr->u.data.high = sge[first_data_sge].buffer_address_high;
1817 	}
1818 
1819 	return  0;
1820 }
1821 
1822 int
sli_fcp_treceive64_wqe(struct sli4 * sli,void * buf,struct efc_dma * sgl,u32 first_data_sge,u16 cq_id,u8 dif,u8 bs,struct sli_fcp_tgt_params * params)1823 sli_fcp_treceive64_wqe(struct sli4 *sli, void *buf, struct efc_dma *sgl,
1824 		       u32 first_data_sge, u16 cq_id, u8 dif, u8 bs,
1825 		       struct sli_fcp_tgt_params *params)
1826 {
1827 	struct sli4_fcp_treceive64_wqe *trecv = buf;
1828 	struct sli4_fcp_128byte_wqe *trecv_128 = buf;
1829 	struct sli4_sge *sge = NULL;
1830 	struct sli4_bde *bptr;
1831 
1832 	memset(buf, 0, sli->wqe_size);
1833 
1834 	if (!sgl || !sgl->virt) {
1835 		efc_log_err(sli, "bad parameter sgl=%p virt=%p\n",
1836 			    sgl, sgl ? sgl->virt : NULL);
1837 		return -EIO;
1838 	}
1839 	sge = sgl->virt;
1840 	bptr = &trecv->bde;
1841 	if (sli->params.sgl_pre_registered) {
1842 		trecv->qosd_xbl_hlm_iod_dbde_wqes &= ~SLI4_TRCV_WQE_XBL;
1843 
1844 		trecv->qosd_xbl_hlm_iod_dbde_wqes |= SLI4_TRCV_WQE_DBDE;
1845 
1846 		bptr->bde_type_buflen =
1847 			cpu_to_le32((SLI4_BDE_TYPE_VAL(64)) |
1848 				    (le32_to_cpu(sge[0].buffer_length)
1849 					& SLI4_BDE_LEN_MASK));
1850 
1851 		bptr->u.data.low  = sge[0].buffer_address_low;
1852 		bptr->u.data.high = sge[0].buffer_address_high;
1853 
1854 		trecv->payload_offset_length = sge[0].buffer_length;
1855 	} else {
1856 		trecv->qosd_xbl_hlm_iod_dbde_wqes |= SLI4_TRCV_WQE_XBL;
1857 
1858 		/* if data is a single physical address, use a BDE */
1859 		if (!dif &&
1860 		    params->xmit_len <= le32_to_cpu(sge[2].buffer_length)) {
1861 			trecv->qosd_xbl_hlm_iod_dbde_wqes |= SLI4_TRCV_WQE_DBDE;
1862 			bptr->bde_type_buflen =
1863 			      cpu_to_le32((SLI4_BDE_TYPE_VAL(64)) |
1864 					  (le32_to_cpu(sge[2].buffer_length)
1865 					  & SLI4_BDE_LEN_MASK));
1866 
1867 			bptr->u.data.low = sge[2].buffer_address_low;
1868 			bptr->u.data.high = sge[2].buffer_address_high;
1869 		} else {
1870 			bptr->bde_type_buflen =
1871 				cpu_to_le32((SLI4_BDE_TYPE_VAL(BLP)) |
1872 				(sgl->size & SLI4_BDE_LEN_MASK));
1873 			bptr->u.blp.low = cpu_to_le32(lower_32_bits(sgl->phys));
1874 			bptr->u.blp.high =
1875 				cpu_to_le32(upper_32_bits(sgl->phys));
1876 		}
1877 	}
1878 
1879 	trecv->relative_offset = cpu_to_le32(params->offset);
1880 
1881 	if (params->flags & SLI4_IO_CONTINUATION)
1882 		trecv->eat_xc_ccpe |= SLI4_TRCV_WQE_XC;
1883 
1884 	trecv->xri_tag = cpu_to_le16(params->xri);
1885 
1886 	trecv->context_tag = cpu_to_le16(params->rpi);
1887 
1888 	/* WQE uses relative offset */
1889 	trecv->class_ar_pu_byte |= 1 << SLI4_TRCV_WQE_PU_SHFT;
1890 
1891 	if (params->flags & SLI4_IO_AUTO_GOOD_RESPONSE)
1892 		trecv->class_ar_pu_byte |= SLI4_TRCV_WQE_AR;
1893 
1894 	trecv->command = SLI4_WQE_FCP_TRECEIVE64;
1895 	trecv->class_ar_pu_byte |= SLI4_GENERIC_CLASS_CLASS_3;
1896 	trecv->dif_ct_bs_byte |=
1897 		SLI4_GENERIC_CONTEXT_RPI << SLI4_TRCV_WQE_CT_SHFT;
1898 	trecv->dif_ct_bs_byte |= bs << SLI4_TRCV_WQE_BS_SHFT;
1899 
1900 	trecv->remote_xid = cpu_to_le16(params->ox_id);
1901 
1902 	trecv->request_tag = cpu_to_le16(params->tag);
1903 
1904 	trecv->qosd_xbl_hlm_iod_dbde_wqes |= SLI4_TRCV_WQE_IOD;
1905 
1906 	trecv->qosd_xbl_hlm_iod_dbde_wqes |= SLI4_TRCV_WQE_LEN_LOC_BIT2;
1907 
1908 	trecv->cmd_type_byte |= SLI4_CMD_FCP_TRECEIVE64_WQE;
1909 
1910 	trecv->cq_id = cpu_to_le16(cq_id);
1911 
1912 	trecv->fcp_data_receive_length = cpu_to_le32(params->xmit_len);
1913 
1914 	if (sli->params.perf_hint) {
1915 		bptr = &trecv->first_data_bde;
1916 
1917 		bptr->bde_type_buflen =
1918 			cpu_to_le32((SLI4_BDE_TYPE_VAL(64)) |
1919 			    (le32_to_cpu(sge[first_data_sge].buffer_length) &
1920 			     SLI4_BDE_LEN_MASK));
1921 		bptr->u.data.low = sge[first_data_sge].buffer_address_low;
1922 		bptr->u.data.high = sge[first_data_sge].buffer_address_high;
1923 	}
1924 
1925 	/* The upper 7 bits of csctl is the priority */
1926 	if (params->cs_ctl & SLI4_MASK_CCP) {
1927 		trecv->eat_xc_ccpe |= SLI4_TRCV_WQE_CCPE;
1928 		trecv->ccp = (params->cs_ctl & SLI4_MASK_CCP);
1929 	}
1930 
1931 	if (params->app_id && sli->wqe_size == SLI4_WQE_EXT_BYTES &&
1932 	    !(trecv->eat_xc_ccpe & SLI4_TRSP_WQE_EAT)) {
1933 		trecv->lloc1_appid |= SLI4_TRCV_WQE_APPID;
1934 		trecv->qosd_xbl_hlm_iod_dbde_wqes |= SLI4_TRCV_WQE_WQES;
1935 		trecv_128->dw[31] = params->app_id;
1936 	}
1937 	return 0;
1938 }
1939 
1940 int
sli_fcp_cont_treceive64_wqe(struct sli4 * sli,void * buf,struct efc_dma * sgl,u32 first_data_sge,u16 sec_xri,u16 cq_id,u8 dif,u8 bs,struct sli_fcp_tgt_params * params)1941 sli_fcp_cont_treceive64_wqe(struct sli4 *sli, void *buf,
1942 			    struct efc_dma *sgl, u32 first_data_sge,
1943 			    u16 sec_xri, u16 cq_id, u8 dif, u8 bs,
1944 			    struct sli_fcp_tgt_params *params)
1945 {
1946 	int rc;
1947 
1948 	rc = sli_fcp_treceive64_wqe(sli, buf, sgl, first_data_sge,
1949 				    cq_id, dif, bs, params);
1950 	if (!rc) {
1951 		struct sli4_fcp_treceive64_wqe *trecv = buf;
1952 
1953 		trecv->command = SLI4_WQE_FCP_CONT_TRECEIVE64;
1954 		trecv->dword5.sec_xri_tag = cpu_to_le16(sec_xri);
1955 	}
1956 	return rc;
1957 }
1958 
1959 int
sli_fcp_trsp64_wqe(struct sli4 * sli4,void * buf,struct efc_dma * sgl,u16 cq_id,u8 port_owned,struct sli_fcp_tgt_params * params)1960 sli_fcp_trsp64_wqe(struct sli4 *sli4, void *buf, struct efc_dma *sgl,
1961 		   u16 cq_id, u8 port_owned, struct sli_fcp_tgt_params *params)
1962 {
1963 	struct sli4_fcp_trsp64_wqe *trsp = buf;
1964 	struct sli4_fcp_128byte_wqe *trsp_128 = buf;
1965 
1966 	memset(buf, 0, sli4->wqe_size);
1967 
1968 	if (params->flags & SLI4_IO_AUTO_GOOD_RESPONSE) {
1969 		trsp->class_ag_byte |= SLI4_TRSP_WQE_AG;
1970 	} else {
1971 		struct sli4_sge	*sge = sgl->virt;
1972 		struct sli4_bde *bptr;
1973 
1974 		if (sli4->params.sgl_pre_registered || port_owned)
1975 			trsp->qosd_xbl_hlm_dbde_wqes |= SLI4_TRSP_WQE_DBDE;
1976 		else
1977 			trsp->qosd_xbl_hlm_dbde_wqes |= SLI4_TRSP_WQE_XBL;
1978 		bptr = &trsp->bde;
1979 
1980 		bptr->bde_type_buflen =
1981 			cpu_to_le32((SLI4_BDE_TYPE_VAL(64)) |
1982 				     (le32_to_cpu(sge[0].buffer_length) &
1983 				      SLI4_BDE_LEN_MASK));
1984 		bptr->u.data.low  = sge[0].buffer_address_low;
1985 		bptr->u.data.high = sge[0].buffer_address_high;
1986 
1987 		trsp->fcp_response_length = cpu_to_le32(params->xmit_len);
1988 	}
1989 
1990 	if (params->flags & SLI4_IO_CONTINUATION)
1991 		trsp->eat_xc_ccpe |= SLI4_TRSP_WQE_XC;
1992 
1993 	trsp->xri_tag = cpu_to_le16(params->xri);
1994 	trsp->rpi = cpu_to_le16(params->rpi);
1995 
1996 	trsp->command = SLI4_WQE_FCP_TRSP64;
1997 	trsp->class_ag_byte |= SLI4_GENERIC_CLASS_CLASS_3;
1998 
1999 	trsp->remote_xid = cpu_to_le16(params->ox_id);
2000 	trsp->request_tag = cpu_to_le16(params->tag);
2001 	if (params->flags & SLI4_IO_DNRX)
2002 		trsp->ct_dnrx_byte |= SLI4_TRSP_WQE_DNRX;
2003 	else
2004 		trsp->ct_dnrx_byte &= ~SLI4_TRSP_WQE_DNRX;
2005 
2006 	trsp->lloc1_appid |= 0x1;
2007 	trsp->cq_id = cpu_to_le16(cq_id);
2008 	trsp->cmd_type_byte = SLI4_CMD_FCP_TRSP64_WQE;
2009 
2010 	/* The upper 7 bits of csctl is the priority */
2011 	if (params->cs_ctl & SLI4_MASK_CCP) {
2012 		trsp->eat_xc_ccpe |= SLI4_TRSP_WQE_CCPE;
2013 		trsp->ccp = (params->cs_ctl & SLI4_MASK_CCP);
2014 	}
2015 
2016 	if (params->app_id && sli4->wqe_size == SLI4_WQE_EXT_BYTES &&
2017 	    !(trsp->eat_xc_ccpe & SLI4_TRSP_WQE_EAT)) {
2018 		trsp->lloc1_appid |= SLI4_TRSP_WQE_APPID;
2019 		trsp->qosd_xbl_hlm_dbde_wqes |= SLI4_TRSP_WQE_WQES;
2020 		trsp_128->dw[31] = params->app_id;
2021 	}
2022 	return 0;
2023 }
2024 
2025 int
sli_fcp_tsend64_wqe(struct sli4 * sli4,void * buf,struct efc_dma * sgl,u32 first_data_sge,u16 cq_id,u8 dif,u8 bs,struct sli_fcp_tgt_params * params)2026 sli_fcp_tsend64_wqe(struct sli4 *sli4, void *buf, struct efc_dma *sgl,
2027 		    u32 first_data_sge, u16 cq_id, u8 dif, u8 bs,
2028 		    struct sli_fcp_tgt_params *params)
2029 {
2030 	struct sli4_fcp_tsend64_wqe *tsend = buf;
2031 	struct sli4_fcp_128byte_wqe *tsend_128 = buf;
2032 	struct sli4_sge *sge = NULL;
2033 	struct sli4_bde *bptr;
2034 
2035 	memset(buf, 0, sli4->wqe_size);
2036 
2037 	if (!sgl || !sgl->virt) {
2038 		efc_log_err(sli4, "bad parameter sgl=%p virt=%p\n",
2039 			    sgl, sgl ? sgl->virt : NULL);
2040 		return -EIO;
2041 	}
2042 	sge = sgl->virt;
2043 
2044 	bptr = &tsend->bde;
2045 	if (sli4->params.sgl_pre_registered) {
2046 		tsend->ll_qd_xbl_hlm_iod_dbde &= ~SLI4_TSEND_WQE_XBL;
2047 
2048 		tsend->ll_qd_xbl_hlm_iod_dbde |= SLI4_TSEND_WQE_DBDE;
2049 
2050 		bptr->bde_type_buflen =
2051 			cpu_to_le32((SLI4_BDE_TYPE_VAL(64)) |
2052 				   (le32_to_cpu(sge[2].buffer_length) &
2053 				    SLI4_BDE_LEN_MASK));
2054 
2055 		/* TSEND64_WQE specifies first two SGE are skipped (3rd is
2056 		 * valid)
2057 		 */
2058 		bptr->u.data.low  = sge[2].buffer_address_low;
2059 		bptr->u.data.high = sge[2].buffer_address_high;
2060 	} else {
2061 		tsend->ll_qd_xbl_hlm_iod_dbde |= SLI4_TSEND_WQE_XBL;
2062 
2063 		/* if data is a single physical address, use a BDE */
2064 		if (!dif &&
2065 		    params->xmit_len <= le32_to_cpu(sge[2].buffer_length)) {
2066 			tsend->ll_qd_xbl_hlm_iod_dbde |= SLI4_TSEND_WQE_DBDE;
2067 
2068 			bptr->bde_type_buflen =
2069 			    cpu_to_le32((SLI4_BDE_TYPE_VAL(64)) |
2070 					(le32_to_cpu(sge[2].buffer_length) &
2071 					SLI4_BDE_LEN_MASK));
2072 			/*
2073 			 * TSEND64_WQE specifies first two SGE are skipped
2074 			 * (i.e. 3rd is valid)
2075 			 */
2076 			bptr->u.data.low =
2077 				sge[2].buffer_address_low;
2078 			bptr->u.data.high =
2079 				sge[2].buffer_address_high;
2080 		} else {
2081 			bptr->bde_type_buflen =
2082 				cpu_to_le32((SLI4_BDE_TYPE_VAL(BLP)) |
2083 					    (sgl->size &
2084 					     SLI4_BDE_LEN_MASK));
2085 			bptr->u.blp.low =
2086 				cpu_to_le32(lower_32_bits(sgl->phys));
2087 			bptr->u.blp.high =
2088 				cpu_to_le32(upper_32_bits(sgl->phys));
2089 		}
2090 	}
2091 
2092 	tsend->relative_offset = cpu_to_le32(params->offset);
2093 
2094 	if (params->flags & SLI4_IO_CONTINUATION)
2095 		tsend->dw10byte2 |= SLI4_TSEND_XC;
2096 
2097 	tsend->xri_tag = cpu_to_le16(params->xri);
2098 
2099 	tsend->rpi = cpu_to_le16(params->rpi);
2100 	/* WQE uses relative offset */
2101 	tsend->class_pu_ar_byte |= 1 << SLI4_TSEND_WQE_PU_SHFT;
2102 
2103 	if (params->flags & SLI4_IO_AUTO_GOOD_RESPONSE)
2104 		tsend->class_pu_ar_byte |= SLI4_TSEND_WQE_AR;
2105 
2106 	tsend->command = SLI4_WQE_FCP_TSEND64;
2107 	tsend->class_pu_ar_byte |= SLI4_GENERIC_CLASS_CLASS_3;
2108 	tsend->ct_byte |= SLI4_GENERIC_CONTEXT_RPI << SLI4_TSEND_CT_SHFT;
2109 	tsend->ct_byte |= dif;
2110 	tsend->ct_byte |= bs << SLI4_TSEND_BS_SHFT;
2111 
2112 	tsend->remote_xid = cpu_to_le16(params->ox_id);
2113 
2114 	tsend->request_tag = cpu_to_le16(params->tag);
2115 
2116 	tsend->ll_qd_xbl_hlm_iod_dbde |= SLI4_TSEND_LEN_LOC_BIT2;
2117 
2118 	tsend->cq_id = cpu_to_le16(cq_id);
2119 
2120 	tsend->cmd_type_byte |= SLI4_CMD_FCP_TSEND64_WQE;
2121 
2122 	tsend->fcp_data_transmit_length = cpu_to_le32(params->xmit_len);
2123 
2124 	if (sli4->params.perf_hint) {
2125 		bptr = &tsend->first_data_bde;
2126 		bptr->bde_type_buflen =
2127 			cpu_to_le32((SLI4_BDE_TYPE_VAL(64)) |
2128 			    (le32_to_cpu(sge[first_data_sge].buffer_length) &
2129 			     SLI4_BDE_LEN_MASK));
2130 		bptr->u.data.low =
2131 			sge[first_data_sge].buffer_address_low;
2132 		bptr->u.data.high =
2133 			sge[first_data_sge].buffer_address_high;
2134 	}
2135 
2136 	/* The upper 7 bits of csctl is the priority */
2137 	if (params->cs_ctl & SLI4_MASK_CCP) {
2138 		tsend->dw10byte2 |= SLI4_TSEND_CCPE;
2139 		tsend->ccp = (params->cs_ctl & SLI4_MASK_CCP);
2140 	}
2141 
2142 	if (params->app_id && sli4->wqe_size == SLI4_WQE_EXT_BYTES &&
2143 	    !(tsend->dw10byte2 & SLI4_TSEND_EAT)) {
2144 		tsend->dw10byte0 |= SLI4_TSEND_APPID_VALID;
2145 		tsend->ll_qd_xbl_hlm_iod_dbde |= SLI4_TSEND_WQES;
2146 		tsend_128->dw[31] = params->app_id;
2147 	}
2148 	return 0;
2149 }
2150 
2151 int
sli_gen_request64_wqe(struct sli4 * sli4,void * buf,struct efc_dma * sgl,struct sli_ct_params * params)2152 sli_gen_request64_wqe(struct sli4 *sli4, void *buf, struct efc_dma *sgl,
2153 		      struct sli_ct_params *params)
2154 {
2155 	struct sli4_gen_request64_wqe *gen = buf;
2156 	struct sli4_sge *sge = NULL;
2157 	struct sli4_bde *bptr;
2158 
2159 	memset(buf, 0, sli4->wqe_size);
2160 
2161 	if (!sgl || !sgl->virt) {
2162 		efc_log_err(sli4, "bad parameter sgl=%p virt=%p\n",
2163 			    sgl, sgl ? sgl->virt : NULL);
2164 		return -EIO;
2165 	}
2166 	sge = sgl->virt;
2167 	bptr = &gen->bde;
2168 
2169 	if (sli4->params.sgl_pre_registered) {
2170 		gen->dw10flags1 &= ~SLI4_GEN_REQ64_WQE_XBL;
2171 
2172 		gen->dw10flags1 |= SLI4_GEN_REQ64_WQE_DBDE;
2173 		bptr->bde_type_buflen =
2174 			cpu_to_le32((SLI4_BDE_TYPE_VAL(64)) |
2175 				    (params->xmit_len & SLI4_BDE_LEN_MASK));
2176 
2177 		bptr->u.data.low  = sge[0].buffer_address_low;
2178 		bptr->u.data.high = sge[0].buffer_address_high;
2179 	} else {
2180 		gen->dw10flags1 |= SLI4_GEN_REQ64_WQE_XBL;
2181 
2182 		bptr->bde_type_buflen =
2183 			cpu_to_le32((SLI4_BDE_TYPE_VAL(BLP)) |
2184 				    ((2 * sizeof(struct sli4_sge)) &
2185 				     SLI4_BDE_LEN_MASK));
2186 
2187 		bptr->u.blp.low =
2188 			cpu_to_le32(lower_32_bits(sgl->phys));
2189 		bptr->u.blp.high =
2190 			cpu_to_le32(upper_32_bits(sgl->phys));
2191 	}
2192 
2193 	gen->request_payload_length = cpu_to_le32(params->xmit_len);
2194 	gen->max_response_payload_length = cpu_to_le32(params->rsp_len);
2195 
2196 	gen->df_ctl = params->df_ctl;
2197 	gen->type = params->type;
2198 	gen->r_ctl = params->r_ctl;
2199 
2200 	gen->xri_tag = cpu_to_le16(params->xri);
2201 
2202 	gen->ct_byte = SLI4_GENERIC_CONTEXT_RPI << SLI4_GEN_REQ64_CT_SHFT;
2203 	gen->context_tag = cpu_to_le16(params->rpi);
2204 
2205 	gen->class_byte = SLI4_GENERIC_CLASS_CLASS_3;
2206 
2207 	gen->command = SLI4_WQE_GEN_REQUEST64;
2208 
2209 	gen->timer = params->timeout;
2210 
2211 	gen->request_tag = cpu_to_le16(params->tag);
2212 
2213 	gen->dw10flags1 |= SLI4_GEN_REQ64_WQE_IOD;
2214 
2215 	gen->dw10flags0 |= SLI4_GEN_REQ64_WQE_QOSD;
2216 
2217 	gen->cmd_type_byte = SLI4_CMD_GEN_REQUEST64_WQE;
2218 
2219 	gen->cq_id = cpu_to_le16(SLI4_CQ_DEFAULT);
2220 
2221 	return 0;
2222 }
2223 
2224 int
sli_send_frame_wqe(struct sli4 * sli,void * buf,u8 sof,u8 eof,u32 * hdr,struct efc_dma * payload,u32 req_len,u8 timeout,u16 xri,u16 req_tag)2225 sli_send_frame_wqe(struct sli4 *sli, void *buf, u8 sof, u8 eof, u32 *hdr,
2226 		   struct efc_dma *payload, u32 req_len, u8 timeout, u16 xri,
2227 		   u16 req_tag)
2228 {
2229 	struct sli4_send_frame_wqe *sf = buf;
2230 
2231 	memset(buf, 0, sli->wqe_size);
2232 
2233 	sf->dw10flags1 |= SLI4_SF_WQE_DBDE;
2234 	sf->bde.bde_type_buflen = cpu_to_le32(req_len &
2235 					      SLI4_BDE_LEN_MASK);
2236 	sf->bde.u.data.low = cpu_to_le32(lower_32_bits(payload->phys));
2237 	sf->bde.u.data.high = cpu_to_le32(upper_32_bits(payload->phys));
2238 
2239 	/* Copy FC header */
2240 	sf->fc_header_0_1[0] = cpu_to_le32(hdr[0]);
2241 	sf->fc_header_0_1[1] = cpu_to_le32(hdr[1]);
2242 	sf->fc_header_2_5[0] = cpu_to_le32(hdr[2]);
2243 	sf->fc_header_2_5[1] = cpu_to_le32(hdr[3]);
2244 	sf->fc_header_2_5[2] = cpu_to_le32(hdr[4]);
2245 	sf->fc_header_2_5[3] = cpu_to_le32(hdr[5]);
2246 
2247 	sf->frame_length = cpu_to_le32(req_len);
2248 
2249 	sf->xri_tag = cpu_to_le16(xri);
2250 	sf->dw7flags0 &= ~SLI4_SF_PU;
2251 	sf->context_tag = 0;
2252 
2253 	sf->ct_byte &= ~SLI4_SF_CT;
2254 	sf->command = SLI4_WQE_SEND_FRAME;
2255 	sf->dw7flags0 |= SLI4_GENERIC_CLASS_CLASS_3;
2256 	sf->timer = timeout;
2257 
2258 	sf->request_tag = cpu_to_le16(req_tag);
2259 	sf->eof = eof;
2260 	sf->sof = sof;
2261 
2262 	sf->dw10flags1 &= ~SLI4_SF_QOSD;
2263 	sf->dw10flags0 |= SLI4_SF_LEN_LOC_BIT1;
2264 	sf->dw10flags2 &= ~SLI4_SF_XC;
2265 
2266 	sf->dw10flags1 |= SLI4_SF_XBL;
2267 
2268 	sf->cmd_type_byte |= SLI4_CMD_SEND_FRAME_WQE;
2269 	sf->cq_id = cpu_to_le16(0xffff);
2270 
2271 	return 0;
2272 }
2273 
2274 int
sli_xmit_bls_rsp64_wqe(struct sli4 * sli,void * buf,struct sli_bls_payload * payload,struct sli_bls_params * params)2275 sli_xmit_bls_rsp64_wqe(struct sli4 *sli, void *buf,
2276 		       struct sli_bls_payload *payload,
2277 		       struct sli_bls_params *params)
2278 {
2279 	struct sli4_xmit_bls_rsp_wqe *bls = buf;
2280 	u32 dw_ridflags = 0;
2281 
2282 	/*
2283 	 * Callers can either specify RPI or S_ID, but not both
2284 	 */
2285 	if (params->rpi_registered && params->s_id != U32_MAX) {
2286 		efc_log_info(sli, "S_ID specified for attached remote node %d\n",
2287 			     params->rpi);
2288 		return -EIO;
2289 	}
2290 
2291 	memset(buf, 0, sli->wqe_size);
2292 
2293 	if (payload->type == SLI4_SLI_BLS_ACC) {
2294 		bls->payload_word0 =
2295 			cpu_to_le32((payload->u.acc.seq_id_last << 16) |
2296 				    (payload->u.acc.seq_id_validity << 24));
2297 		bls->high_seq_cnt = payload->u.acc.high_seq_cnt;
2298 		bls->low_seq_cnt = payload->u.acc.low_seq_cnt;
2299 	} else if (payload->type == SLI4_SLI_BLS_RJT) {
2300 		bls->payload_word0 =
2301 				cpu_to_le32(*((u32 *)&payload->u.rjt));
2302 		dw_ridflags |= SLI4_BLS_RSP_WQE_AR;
2303 	} else {
2304 		efc_log_info(sli, "bad BLS type %#x\n", payload->type);
2305 		return -EIO;
2306 	}
2307 
2308 	bls->ox_id = payload->ox_id;
2309 	bls->rx_id = payload->rx_id;
2310 
2311 	if (params->rpi_registered) {
2312 		bls->dw8flags0 |=
2313 		SLI4_GENERIC_CONTEXT_RPI << SLI4_BLS_RSP_WQE_CT_SHFT;
2314 		bls->context_tag = cpu_to_le16(params->rpi);
2315 	} else {
2316 		bls->dw8flags0 |=
2317 		SLI4_GENERIC_CONTEXT_VPI << SLI4_BLS_RSP_WQE_CT_SHFT;
2318 		bls->context_tag = cpu_to_le16(params->vpi);
2319 
2320 		if (params->s_id != U32_MAX)
2321 			bls->local_n_port_id_dword |=
2322 				cpu_to_le32(params->s_id & 0x00ffffff);
2323 		else
2324 			bls->local_n_port_id_dword |=
2325 				cpu_to_le32(params->s_id & 0x00ffffff);
2326 
2327 		dw_ridflags = (dw_ridflags & ~SLI4_BLS_RSP_RID) |
2328 			       (params->d_id & SLI4_BLS_RSP_RID);
2329 
2330 		bls->temporary_rpi = cpu_to_le16(params->rpi);
2331 	}
2332 
2333 	bls->xri_tag = cpu_to_le16(params->xri);
2334 
2335 	bls->dw8flags1 |= SLI4_GENERIC_CLASS_CLASS_3;
2336 
2337 	bls->command = SLI4_WQE_XMIT_BLS_RSP;
2338 
2339 	bls->request_tag = cpu_to_le16(params->tag);
2340 
2341 	bls->dw11flags1 |= SLI4_BLS_RSP_WQE_QOSD;
2342 
2343 	bls->remote_id_dword = cpu_to_le32(dw_ridflags);
2344 	bls->cq_id = cpu_to_le16(SLI4_CQ_DEFAULT);
2345 
2346 	bls->dw12flags0 |= SLI4_CMD_XMIT_BLS_RSP64_WQE;
2347 
2348 	return 0;
2349 }
2350 
2351 int
sli_xmit_els_rsp64_wqe(struct sli4 * sli,void * buf,struct efc_dma * rsp,struct sli_els_params * params)2352 sli_xmit_els_rsp64_wqe(struct sli4 *sli, void *buf, struct efc_dma *rsp,
2353 		       struct sli_els_params *params)
2354 {
2355 	struct sli4_xmit_els_rsp64_wqe *els = buf;
2356 
2357 	memset(buf, 0, sli->wqe_size);
2358 
2359 	if (sli->params.sgl_pre_registered)
2360 		els->flags2 |= SLI4_ELS_DBDE;
2361 	else
2362 		els->flags2 |= SLI4_ELS_XBL;
2363 
2364 	els->els_response_payload.bde_type_buflen =
2365 		cpu_to_le32((SLI4_BDE_TYPE_VAL(64)) |
2366 			    (params->rsp_len & SLI4_BDE_LEN_MASK));
2367 	els->els_response_payload.u.data.low =
2368 		cpu_to_le32(lower_32_bits(rsp->phys));
2369 	els->els_response_payload.u.data.high =
2370 		cpu_to_le32(upper_32_bits(rsp->phys));
2371 
2372 	els->els_response_payload_length = cpu_to_le32(params->rsp_len);
2373 
2374 	els->xri_tag = cpu_to_le16(params->xri);
2375 
2376 	els->class_byte |= SLI4_GENERIC_CLASS_CLASS_3;
2377 
2378 	els->command = SLI4_WQE_ELS_RSP64;
2379 
2380 	els->request_tag = cpu_to_le16(params->tag);
2381 
2382 	els->ox_id = cpu_to_le16(params->ox_id);
2383 
2384 	els->flags2 |= SLI4_ELS_QOSD;
2385 
2386 	els->cmd_type_wqec = SLI4_ELS_REQUEST64_CMD_GEN;
2387 
2388 	els->cq_id = cpu_to_le16(SLI4_CQ_DEFAULT);
2389 
2390 	if (params->rpi_registered) {
2391 		els->ct_byte |=
2392 			SLI4_GENERIC_CONTEXT_RPI << SLI4_ELS_CT_OFFSET;
2393 		els->context_tag = cpu_to_le16(params->rpi);
2394 		return 0;
2395 	}
2396 
2397 	els->ct_byte |= SLI4_GENERIC_CONTEXT_VPI << SLI4_ELS_CT_OFFSET;
2398 	els->context_tag = cpu_to_le16(params->vpi);
2399 	els->rid_dw = cpu_to_le32(params->d_id & SLI4_ELS_RID);
2400 	els->temporary_rpi = cpu_to_le16(params->rpi);
2401 	if (params->s_id != U32_MAX) {
2402 		els->sid_dw |=
2403 		      cpu_to_le32(SLI4_ELS_SP | (params->s_id & SLI4_ELS_SID));
2404 	}
2405 
2406 	return 0;
2407 }
2408 
2409 int
sli_xmit_sequence64_wqe(struct sli4 * sli4,void * buf,struct efc_dma * payload,struct sli_ct_params * params)2410 sli_xmit_sequence64_wqe(struct sli4 *sli4, void *buf, struct efc_dma *payload,
2411 			struct sli_ct_params *params)
2412 {
2413 	struct sli4_xmit_sequence64_wqe *xmit = buf;
2414 
2415 	memset(buf, 0, sli4->wqe_size);
2416 
2417 	if (!payload || !payload->virt) {
2418 		efc_log_err(sli4, "bad parameter sgl=%p virt=%p\n",
2419 			    payload, payload ? payload->virt : NULL);
2420 		return -EIO;
2421 	}
2422 
2423 	if (sli4->params.sgl_pre_registered)
2424 		xmit->dw10w0 |= cpu_to_le16(SLI4_SEQ_WQE_DBDE);
2425 	else
2426 		xmit->dw10w0 |= cpu_to_le16(SLI4_SEQ_WQE_XBL);
2427 
2428 	xmit->bde.bde_type_buflen =
2429 		cpu_to_le32((SLI4_BDE_TYPE_VAL(64)) |
2430 			(params->rsp_len & SLI4_BDE_LEN_MASK));
2431 	xmit->bde.u.data.low  =
2432 			cpu_to_le32(lower_32_bits(payload->phys));
2433 	xmit->bde.u.data.high =
2434 			cpu_to_le32(upper_32_bits(payload->phys));
2435 	xmit->sequence_payload_len = cpu_to_le32(params->rsp_len);
2436 
2437 	xmit->remote_n_port_id_dword |= cpu_to_le32(params->d_id & 0x00ffffff);
2438 
2439 	xmit->relative_offset = 0;
2440 
2441 	/* sequence initiative - this matches what is seen from
2442 	 * FC switches in response to FCGS commands
2443 	 */
2444 	xmit->dw5flags0 &= (~SLI4_SEQ_WQE_SI);
2445 	xmit->dw5flags0 &= (~SLI4_SEQ_WQE_FT);/* force transmit */
2446 	xmit->dw5flags0 &= (~SLI4_SEQ_WQE_XO);/* exchange responder */
2447 	xmit->dw5flags0 |= SLI4_SEQ_WQE_LS;/* last in seqence */
2448 	xmit->df_ctl = params->df_ctl;
2449 	xmit->type = params->type;
2450 	xmit->r_ctl = params->r_ctl;
2451 
2452 	xmit->xri_tag = cpu_to_le16(params->xri);
2453 	xmit->context_tag = cpu_to_le16(params->rpi);
2454 
2455 	xmit->dw7flags0 &= ~SLI4_SEQ_WQE_DIF;
2456 	xmit->dw7flags0 |=
2457 		SLI4_GENERIC_CONTEXT_RPI << SLI4_SEQ_WQE_CT_SHIFT;
2458 	xmit->dw7flags0 &= ~SLI4_SEQ_WQE_BS;
2459 
2460 	xmit->command = SLI4_WQE_XMIT_SEQUENCE64;
2461 	xmit->dw7flags1 |= SLI4_GENERIC_CLASS_CLASS_3;
2462 	xmit->dw7flags1 &= ~SLI4_SEQ_WQE_PU;
2463 	xmit->timer = params->timeout;
2464 
2465 	xmit->abort_tag = 0;
2466 	xmit->request_tag = cpu_to_le16(params->tag);
2467 	xmit->remote_xid = cpu_to_le16(params->ox_id);
2468 
2469 	xmit->dw10w0 |=
2470 	cpu_to_le16(SLI4_ELS_REQUEST64_DIR_READ << SLI4_SEQ_WQE_IOD_SHIFT);
2471 
2472 	xmit->cmd_type_wqec_byte |= SLI4_CMD_XMIT_SEQUENCE64_WQE;
2473 
2474 	xmit->dw10w0 |= cpu_to_le16(2 << SLI4_SEQ_WQE_LEN_LOC_SHIFT);
2475 
2476 	xmit->cq_id = cpu_to_le16(0xFFFF);
2477 
2478 	return 0;
2479 }
2480 
2481 int
sli_requeue_xri_wqe(struct sli4 * sli4,void * buf,u16 xri,u16 tag,u16 cq_id)2482 sli_requeue_xri_wqe(struct sli4 *sli4, void *buf, u16 xri, u16 tag, u16 cq_id)
2483 {
2484 	struct sli4_requeue_xri_wqe *requeue = buf;
2485 
2486 	memset(buf, 0, sli4->wqe_size);
2487 
2488 	requeue->command = SLI4_WQE_REQUEUE_XRI;
2489 	requeue->xri_tag = cpu_to_le16(xri);
2490 	requeue->request_tag = cpu_to_le16(tag);
2491 	requeue->flags2 |= cpu_to_le16(SLI4_REQU_XRI_WQE_XC);
2492 	requeue->flags1 |= cpu_to_le16(SLI4_REQU_XRI_WQE_QOSD);
2493 	requeue->cq_id = cpu_to_le16(cq_id);
2494 	requeue->cmd_type_wqec_byte = SLI4_CMD_REQUEUE_XRI_WQE;
2495 	return 0;
2496 }
2497 
2498 int
sli_fc_process_link_attention(struct sli4 * sli4,void * acqe)2499 sli_fc_process_link_attention(struct sli4 *sli4, void *acqe)
2500 {
2501 	struct sli4_link_attention *link_attn = acqe;
2502 	struct sli4_link_event event = { 0 };
2503 
2504 	efc_log_info(sli4, "link=%d attn_type=%#x top=%#x speed=%#x pfault=%#x\n",
2505 		     link_attn->link_number, link_attn->attn_type,
2506 		     link_attn->topology, link_attn->port_speed,
2507 		     link_attn->port_fault);
2508 	efc_log_info(sli4, "shared_lnk_status=%#x logl_lnk_speed=%#x evttag=%#x\n",
2509 		     link_attn->shared_link_status,
2510 		     le16_to_cpu(link_attn->logical_link_speed),
2511 		     le32_to_cpu(link_attn->event_tag));
2512 
2513 	if (!sli4->link)
2514 		return -EIO;
2515 
2516 	event.medium   = SLI4_LINK_MEDIUM_FC;
2517 
2518 	switch (link_attn->attn_type) {
2519 	case SLI4_LNK_ATTN_TYPE_LINK_UP:
2520 		event.status = SLI4_LINK_STATUS_UP;
2521 		break;
2522 	case SLI4_LNK_ATTN_TYPE_LINK_DOWN:
2523 		event.status = SLI4_LINK_STATUS_DOWN;
2524 		break;
2525 	case SLI4_LNK_ATTN_TYPE_NO_HARD_ALPA:
2526 		efc_log_info(sli4, "attn_type: no hard alpa\n");
2527 		event.status = SLI4_LINK_STATUS_NO_ALPA;
2528 		break;
2529 	default:
2530 		efc_log_info(sli4, "attn_type: unknown\n");
2531 		break;
2532 	}
2533 
2534 	switch (link_attn->event_type) {
2535 	case SLI4_EVENT_LINK_ATTENTION:
2536 		break;
2537 	case SLI4_EVENT_SHARED_LINK_ATTENTION:
2538 		efc_log_info(sli4, "event_type: FC shared link event\n");
2539 		break;
2540 	default:
2541 		efc_log_info(sli4, "event_type: unknown\n");
2542 		break;
2543 	}
2544 
2545 	switch (link_attn->topology) {
2546 	case SLI4_LNK_ATTN_P2P:
2547 		event.topology = SLI4_LINK_TOPO_NON_FC_AL;
2548 		break;
2549 	case SLI4_LNK_ATTN_FC_AL:
2550 		event.topology = SLI4_LINK_TOPO_FC_AL;
2551 		break;
2552 	case SLI4_LNK_ATTN_INTERNAL_LOOPBACK:
2553 		efc_log_info(sli4, "topology Internal loopback\n");
2554 		event.topology = SLI4_LINK_TOPO_LOOPBACK_INTERNAL;
2555 		break;
2556 	case SLI4_LNK_ATTN_SERDES_LOOPBACK:
2557 		efc_log_info(sli4, "topology serdes loopback\n");
2558 		event.topology = SLI4_LINK_TOPO_LOOPBACK_EXTERNAL;
2559 		break;
2560 	default:
2561 		efc_log_info(sli4, "topology: unknown\n");
2562 		break;
2563 	}
2564 
2565 	event.speed = link_attn->port_speed * 1000;
2566 
2567 	sli4->link(sli4->link_arg, (void *)&event);
2568 
2569 	return 0;
2570 }
2571 
2572 int
sli_fc_cqe_parse(struct sli4 * sli4,struct sli4_queue * cq,u8 * cqe,enum sli4_qentry * etype,u16 * r_id)2573 sli_fc_cqe_parse(struct sli4 *sli4, struct sli4_queue *cq,
2574 		 u8 *cqe, enum sli4_qentry *etype, u16 *r_id)
2575 {
2576 	u8 code = cqe[SLI4_CQE_CODE_OFFSET];
2577 	int rc;
2578 
2579 	switch (code) {
2580 	case SLI4_CQE_CODE_WORK_REQUEST_COMPLETION:
2581 	{
2582 		struct sli4_fc_wcqe *wcqe = (void *)cqe;
2583 
2584 		*etype = SLI4_QENTRY_WQ;
2585 		*r_id = le16_to_cpu(wcqe->request_tag);
2586 		rc = wcqe->status;
2587 
2588 		/* Flag errors except for FCP_RSP_FAILURE */
2589 		if (rc && rc != SLI4_FC_WCQE_STATUS_FCP_RSP_FAILURE) {
2590 			efc_log_info(sli4, "WCQE: status=%#x hw_status=%#x tag=%#x\n",
2591 				     wcqe->status, wcqe->hw_status,
2592 				     le16_to_cpu(wcqe->request_tag));
2593 			efc_log_info(sli4, "w1=%#x w2=%#x xb=%d\n",
2594 				     le32_to_cpu(wcqe->wqe_specific_1),
2595 				     le32_to_cpu(wcqe->wqe_specific_2),
2596 				     (wcqe->flags & SLI4_WCQE_XB));
2597 			efc_log_info(sli4, "      %08X %08X %08X %08X\n",
2598 				     ((u32 *)cqe)[0], ((u32 *)cqe)[1],
2599 				     ((u32 *)cqe)[2], ((u32 *)cqe)[3]);
2600 		}
2601 
2602 		break;
2603 	}
2604 	case SLI4_CQE_CODE_RQ_ASYNC:
2605 	{
2606 		struct sli4_fc_async_rcqe *rcqe = (void *)cqe;
2607 
2608 		*etype = SLI4_QENTRY_RQ;
2609 		*r_id = le16_to_cpu(rcqe->fcfi_rq_id_word) & SLI4_RACQE_RQ_ID;
2610 		rc = rcqe->status;
2611 		break;
2612 	}
2613 	case SLI4_CQE_CODE_RQ_ASYNC_V1:
2614 	{
2615 		struct sli4_fc_async_rcqe_v1 *rcqe = (void *)cqe;
2616 
2617 		*etype = SLI4_QENTRY_RQ;
2618 		*r_id = le16_to_cpu(rcqe->rq_id);
2619 		rc = rcqe->status;
2620 		break;
2621 	}
2622 	case SLI4_CQE_CODE_OPTIMIZED_WRITE_CMD:
2623 	{
2624 		struct sli4_fc_optimized_write_cmd_cqe *optcqe = (void *)cqe;
2625 
2626 		*etype = SLI4_QENTRY_OPT_WRITE_CMD;
2627 		*r_id = le16_to_cpu(optcqe->rq_id);
2628 		rc = optcqe->status;
2629 		break;
2630 	}
2631 	case SLI4_CQE_CODE_OPTIMIZED_WRITE_DATA:
2632 	{
2633 		struct sli4_fc_optimized_write_data_cqe *dcqe = (void *)cqe;
2634 
2635 		*etype = SLI4_QENTRY_OPT_WRITE_DATA;
2636 		*r_id = le16_to_cpu(dcqe->xri);
2637 		rc = dcqe->status;
2638 
2639 		/* Flag errors */
2640 		if (rc != SLI4_FC_WCQE_STATUS_SUCCESS) {
2641 			efc_log_info(sli4, "Optimized DATA CQE: status=%#x\n",
2642 				     dcqe->status);
2643 			efc_log_info(sli4, "hstat=%#x xri=%#x dpl=%#x w3=%#x xb=%d\n",
2644 				     dcqe->hw_status, le16_to_cpu(dcqe->xri),
2645 				     le32_to_cpu(dcqe->total_data_placed),
2646 				     ((u32 *)cqe)[3],
2647 				     (dcqe->flags & SLI4_OCQE_XB));
2648 		}
2649 		break;
2650 	}
2651 	case SLI4_CQE_CODE_RQ_COALESCING:
2652 	{
2653 		struct sli4_fc_coalescing_rcqe *rcqe = (void *)cqe;
2654 
2655 		*etype = SLI4_QENTRY_RQ;
2656 		*r_id = le16_to_cpu(rcqe->rq_id);
2657 		rc = rcqe->status;
2658 		break;
2659 	}
2660 	case SLI4_CQE_CODE_XRI_ABORTED:
2661 	{
2662 		struct sli4_fc_xri_aborted_cqe *xa = (void *)cqe;
2663 
2664 		*etype = SLI4_QENTRY_XABT;
2665 		*r_id = le16_to_cpu(xa->xri);
2666 		rc = 0;
2667 		break;
2668 	}
2669 	case SLI4_CQE_CODE_RELEASE_WQE:
2670 	{
2671 		struct sli4_fc_wqec *wqec = (void *)cqe;
2672 
2673 		*etype = SLI4_QENTRY_WQ_RELEASE;
2674 		*r_id = le16_to_cpu(wqec->wq_id);
2675 		rc = 0;
2676 		break;
2677 	}
2678 	default:
2679 		efc_log_info(sli4, "CQE completion code %d not handled\n",
2680 			     code);
2681 		*etype = SLI4_QENTRY_MAX;
2682 		*r_id = U16_MAX;
2683 		rc = -EINVAL;
2684 	}
2685 
2686 	return rc;
2687 }
2688 
2689 u32
sli_fc_response_length(struct sli4 * sli4,u8 * cqe)2690 sli_fc_response_length(struct sli4 *sli4, u8 *cqe)
2691 {
2692 	struct sli4_fc_wcqe *wcqe = (void *)cqe;
2693 
2694 	return le32_to_cpu(wcqe->wqe_specific_1);
2695 }
2696 
2697 u32
sli_fc_io_length(struct sli4 * sli4,u8 * cqe)2698 sli_fc_io_length(struct sli4 *sli4, u8 *cqe)
2699 {
2700 	struct sli4_fc_wcqe *wcqe = (void *)cqe;
2701 
2702 	return le32_to_cpu(wcqe->wqe_specific_1);
2703 }
2704 
2705 int
sli_fc_els_did(struct sli4 * sli4,u8 * cqe,u32 * d_id)2706 sli_fc_els_did(struct sli4 *sli4, u8 *cqe, u32 *d_id)
2707 {
2708 	struct sli4_fc_wcqe *wcqe = (void *)cqe;
2709 
2710 	*d_id = 0;
2711 
2712 	if (wcqe->status)
2713 		return -EIO;
2714 	*d_id = le32_to_cpu(wcqe->wqe_specific_2) & 0x00ffffff;
2715 	return 0;
2716 }
2717 
2718 u32
sli_fc_ext_status(struct sli4 * sli4,u8 * cqe)2719 sli_fc_ext_status(struct sli4 *sli4, u8 *cqe)
2720 {
2721 	struct sli4_fc_wcqe *wcqe = (void *)cqe;
2722 	u32	mask;
2723 
2724 	switch (wcqe->status) {
2725 	case SLI4_FC_WCQE_STATUS_FCP_RSP_FAILURE:
2726 		mask = U32_MAX;
2727 		break;
2728 	case SLI4_FC_WCQE_STATUS_LOCAL_REJECT:
2729 	case SLI4_FC_WCQE_STATUS_CMD_REJECT:
2730 		mask = 0xff;
2731 		break;
2732 	case SLI4_FC_WCQE_STATUS_NPORT_RJT:
2733 	case SLI4_FC_WCQE_STATUS_FABRIC_RJT:
2734 	case SLI4_FC_WCQE_STATUS_NPORT_BSY:
2735 	case SLI4_FC_WCQE_STATUS_FABRIC_BSY:
2736 	case SLI4_FC_WCQE_STATUS_LS_RJT:
2737 		mask = U32_MAX;
2738 		break;
2739 	case SLI4_FC_WCQE_STATUS_DI_ERROR:
2740 		mask = U32_MAX;
2741 		break;
2742 	default:
2743 		mask = 0;
2744 	}
2745 
2746 	return le32_to_cpu(wcqe->wqe_specific_2) & mask;
2747 }
2748 
2749 int
sli_fc_rqe_rqid_and_index(struct sli4 * sli4,u8 * cqe,u16 * rq_id,u32 * index)2750 sli_fc_rqe_rqid_and_index(struct sli4 *sli4, u8 *cqe, u16 *rq_id, u32 *index)
2751 {
2752 	int rc = -EIO;
2753 	u8 code = 0;
2754 	u16 rq_element_index;
2755 
2756 	*rq_id = 0;
2757 	*index = U32_MAX;
2758 
2759 	code = cqe[SLI4_CQE_CODE_OFFSET];
2760 
2761 	/* Retrieve the RQ index from the completion */
2762 	if (code == SLI4_CQE_CODE_RQ_ASYNC) {
2763 		struct sli4_fc_async_rcqe *rcqe = (void *)cqe;
2764 
2765 		*rq_id = le16_to_cpu(rcqe->fcfi_rq_id_word) & SLI4_RACQE_RQ_ID;
2766 		rq_element_index =
2767 		le16_to_cpu(rcqe->rq_elmt_indx_word) & SLI4_RACQE_RQ_EL_INDX;
2768 		*index = rq_element_index;
2769 		if (rcqe->status == SLI4_FC_ASYNC_RQ_SUCCESS) {
2770 			rc = 0;
2771 		} else {
2772 			rc = rcqe->status;
2773 			efc_log_info(sli4, "status=%02x (%s) rq_id=%d\n",
2774 				     rcqe->status,
2775 				     sli_fc_get_status_string(rcqe->status),
2776 				     le16_to_cpu(rcqe->fcfi_rq_id_word) &
2777 				     SLI4_RACQE_RQ_ID);
2778 
2779 			efc_log_info(sli4, "pdpl=%x sof=%02x eof=%02x hdpl=%x\n",
2780 				     le16_to_cpu(rcqe->data_placement_length),
2781 				     rcqe->sof_byte, rcqe->eof_byte,
2782 				     rcqe->hdpl_byte & SLI4_RACQE_HDPL);
2783 		}
2784 	} else if (code == SLI4_CQE_CODE_RQ_ASYNC_V1) {
2785 		struct sli4_fc_async_rcqe_v1 *rcqe_v1 = (void *)cqe;
2786 
2787 		*rq_id = le16_to_cpu(rcqe_v1->rq_id);
2788 		rq_element_index =
2789 			(le16_to_cpu(rcqe_v1->rq_elmt_indx_word) &
2790 			 SLI4_RACQE_RQ_EL_INDX);
2791 		*index = rq_element_index;
2792 		if (rcqe_v1->status == SLI4_FC_ASYNC_RQ_SUCCESS) {
2793 			rc = 0;
2794 		} else {
2795 			rc = rcqe_v1->status;
2796 			efc_log_info(sli4, "status=%02x (%s) rq_id=%d, index=%x\n",
2797 				     rcqe_v1->status,
2798 				     sli_fc_get_status_string(rcqe_v1->status),
2799 				     le16_to_cpu(rcqe_v1->rq_id), rq_element_index);
2800 
2801 			efc_log_info(sli4, "pdpl=%x sof=%02x eof=%02x hdpl=%x\n",
2802 				     le16_to_cpu(rcqe_v1->data_placement_length),
2803 			rcqe_v1->sof_byte, rcqe_v1->eof_byte,
2804 			rcqe_v1->hdpl_byte & SLI4_RACQE_HDPL);
2805 		}
2806 	} else if (code == SLI4_CQE_CODE_OPTIMIZED_WRITE_CMD) {
2807 		struct sli4_fc_optimized_write_cmd_cqe *optcqe = (void *)cqe;
2808 
2809 		*rq_id = le16_to_cpu(optcqe->rq_id);
2810 		*index = le16_to_cpu(optcqe->w1) & SLI4_OCQE_RQ_EL_INDX;
2811 		if (optcqe->status == SLI4_FC_ASYNC_RQ_SUCCESS) {
2812 			rc = 0;
2813 		} else {
2814 			rc = optcqe->status;
2815 			efc_log_info(sli4, "stat=%02x (%s) rqid=%d, idx=%x pdpl=%x\n",
2816 				     optcqe->status,
2817 				     sli_fc_get_status_string(optcqe->status),
2818 				     le16_to_cpu(optcqe->rq_id), *index,
2819 				     le16_to_cpu(optcqe->data_placement_length));
2820 
2821 			efc_log_info(sli4, "hdpl=%x oox=%d agxr=%d xri=0x%x rpi=%x\n",
2822 				     (optcqe->hdpl_vld & SLI4_OCQE_HDPL),
2823 				     (optcqe->flags1 & SLI4_OCQE_OOX),
2824 				     (optcqe->flags1 & SLI4_OCQE_AGXR),
2825 				     optcqe->xri, le16_to_cpu(optcqe->rpi));
2826 		}
2827 	} else if (code == SLI4_CQE_CODE_RQ_COALESCING) {
2828 		struct sli4_fc_coalescing_rcqe  *rcqe = (void *)cqe;
2829 
2830 		rq_element_index = (le16_to_cpu(rcqe->rq_elmt_indx_word) &
2831 				    SLI4_RCQE_RQ_EL_INDX);
2832 
2833 		*rq_id = le16_to_cpu(rcqe->rq_id);
2834 		if (rcqe->status == SLI4_FC_COALESCE_RQ_SUCCESS) {
2835 			*index = rq_element_index;
2836 			rc = 0;
2837 		} else {
2838 			*index = U32_MAX;
2839 			rc = rcqe->status;
2840 
2841 			efc_log_info(sli4, "stat=%02x (%s) rq_id=%d, idx=%x\n",
2842 				     rcqe->status,
2843 				     sli_fc_get_status_string(rcqe->status),
2844 				     le16_to_cpu(rcqe->rq_id), rq_element_index);
2845 			efc_log_info(sli4, "rq_id=%#x sdpl=%x\n",
2846 				     le16_to_cpu(rcqe->rq_id),
2847 				     le16_to_cpu(rcqe->seq_placement_length));
2848 		}
2849 	} else {
2850 		struct sli4_fc_async_rcqe *rcqe = (void *)cqe;
2851 
2852 		*index = U32_MAX;
2853 		rc = rcqe->status;
2854 
2855 		efc_log_info(sli4, "status=%02x rq_id=%d, index=%x pdpl=%x\n",
2856 			     rcqe->status,
2857 			     le16_to_cpu(rcqe->fcfi_rq_id_word) & SLI4_RACQE_RQ_ID,
2858 			     (le16_to_cpu(rcqe->rq_elmt_indx_word) & SLI4_RACQE_RQ_EL_INDX),
2859 			     le16_to_cpu(rcqe->data_placement_length));
2860 		efc_log_info(sli4, "sof=%02x eof=%02x hdpl=%x\n",
2861 			     rcqe->sof_byte, rcqe->eof_byte,
2862 			     rcqe->hdpl_byte & SLI4_RACQE_HDPL);
2863 	}
2864 
2865 	return rc;
2866 }
2867 
2868 static int
sli_bmbx_wait(struct sli4 * sli4,u32 msec)2869 sli_bmbx_wait(struct sli4 *sli4, u32 msec)
2870 {
2871 	u32 val;
2872 	unsigned long end;
2873 
2874 	/* Wait for the bootstrap mailbox to report "ready" */
2875 	end = jiffies + msecs_to_jiffies(msec);
2876 	do {
2877 		val = readl(sli4->reg[0] + SLI4_BMBX_REG);
2878 		if (val & SLI4_BMBX_RDY)
2879 			return 0;
2880 
2881 		usleep_range(1000, 2000);
2882 	} while (time_before(jiffies, end));
2883 
2884 	return -EIO;
2885 }
2886 
2887 static int
sli_bmbx_write(struct sli4 * sli4)2888 sli_bmbx_write(struct sli4 *sli4)
2889 {
2890 	u32 val;
2891 
2892 	/* write buffer location to bootstrap mailbox register */
2893 	val = sli_bmbx_write_hi(sli4->bmbx.phys);
2894 	writel(val, (sli4->reg[0] + SLI4_BMBX_REG));
2895 
2896 	if (sli_bmbx_wait(sli4, SLI4_BMBX_DELAY_US)) {
2897 		efc_log_crit(sli4, "BMBX WRITE_HI failed\n");
2898 		return -EIO;
2899 	}
2900 	val = sli_bmbx_write_lo(sli4->bmbx.phys);
2901 	writel(val, (sli4->reg[0] + SLI4_BMBX_REG));
2902 
2903 	/* wait for SLI Port to set ready bit */
2904 	return sli_bmbx_wait(sli4, SLI4_BMBX_TIMEOUT_MSEC);
2905 }
2906 
2907 int
sli_bmbx_command(struct sli4 * sli4)2908 sli_bmbx_command(struct sli4 *sli4)
2909 {
2910 	void *cqe = (u8 *)sli4->bmbx.virt + SLI4_BMBX_SIZE;
2911 
2912 	if (sli_fw_error_status(sli4) > 0) {
2913 		efc_log_crit(sli4, "Chip is in an error state -Mailbox command rejected");
2914 		efc_log_crit(sli4, " status=%#x error1=%#x error2=%#x\n",
2915 			     sli_reg_read_status(sli4),
2916 			     sli_reg_read_err1(sli4),
2917 			     sli_reg_read_err2(sli4));
2918 		return -EIO;
2919 	}
2920 
2921 	/* Submit a command to the bootstrap mailbox and check the status */
2922 	if (sli_bmbx_write(sli4)) {
2923 		efc_log_crit(sli4, "bmbx write fail phys=%pad reg=%#x\n",
2924 			     &sli4->bmbx.phys, readl(sli4->reg[0] + SLI4_BMBX_REG));
2925 		return -EIO;
2926 	}
2927 
2928 	/* check completion queue entry status */
2929 	if (le32_to_cpu(((struct sli4_mcqe *)cqe)->dw3_flags) &
2930 	    SLI4_MCQE_VALID) {
2931 		return sli_cqe_mq(sli4, cqe);
2932 	}
2933 	efc_log_crit(sli4, "invalid or wrong type\n");
2934 	return -EIO;
2935 }
2936 
2937 int
sli_cmd_config_link(struct sli4 * sli4,void * buf)2938 sli_cmd_config_link(struct sli4 *sli4, void *buf)
2939 {
2940 	struct sli4_cmd_config_link *config_link = buf;
2941 
2942 	memset(buf, 0, SLI4_BMBX_SIZE);
2943 
2944 	config_link->hdr.command = SLI4_MBX_CMD_CONFIG_LINK;
2945 
2946 	/* Port interprets zero in a field as "use default value" */
2947 
2948 	return 0;
2949 }
2950 
2951 int
sli_cmd_down_link(struct sli4 * sli4,void * buf)2952 sli_cmd_down_link(struct sli4 *sli4, void *buf)
2953 {
2954 	struct sli4_mbox_command_header *hdr = buf;
2955 
2956 	memset(buf, 0, SLI4_BMBX_SIZE);
2957 
2958 	hdr->command = SLI4_MBX_CMD_DOWN_LINK;
2959 
2960 	/* Port interprets zero in a field as "use default value" */
2961 
2962 	return 0;
2963 }
2964 
2965 int
sli_cmd_dump_type4(struct sli4 * sli4,void * buf,u16 wki)2966 sli_cmd_dump_type4(struct sli4 *sli4, void *buf, u16 wki)
2967 {
2968 	struct sli4_cmd_dump4 *cmd = buf;
2969 
2970 	memset(buf, 0, SLI4_BMBX_SIZE);
2971 
2972 	cmd->hdr.command = SLI4_MBX_CMD_DUMP;
2973 	cmd->type_dword = cpu_to_le32(0x4);
2974 	cmd->wki_selection = cpu_to_le16(wki);
2975 	return 0;
2976 }
2977 
2978 int
sli_cmd_common_read_transceiver_data(struct sli4 * sli4,void * buf,u32 page_num,struct efc_dma * dma)2979 sli_cmd_common_read_transceiver_data(struct sli4 *sli4, void *buf, u32 page_num,
2980 				     struct efc_dma *dma)
2981 {
2982 	struct sli4_rqst_cmn_read_transceiver_data *req = NULL;
2983 	u32 psize;
2984 
2985 	if (!dma)
2986 		psize = SLI4_CFG_PYLD_LENGTH(cmn_read_transceiver_data);
2987 	else
2988 		psize = dma->size;
2989 
2990 	req = sli_config_cmd_init(sli4, buf, psize, dma);
2991 	if (!req)
2992 		return -EIO;
2993 
2994 	sli_cmd_fill_hdr(&req->hdr, SLI4_CMN_READ_TRANS_DATA,
2995 			 SLI4_SUBSYSTEM_COMMON, CMD_V0,
2996 			 SLI4_RQST_PYLD_LEN(cmn_read_transceiver_data));
2997 
2998 	req->page_number = cpu_to_le32(page_num);
2999 	req->port = cpu_to_le32(sli4->port_number);
3000 
3001 	return 0;
3002 }
3003 
3004 int
sli_cmd_read_link_stats(struct sli4 * sli4,void * buf,u8 req_ext_counters,u8 clear_overflow_flags,u8 clear_all_counters)3005 sli_cmd_read_link_stats(struct sli4 *sli4, void *buf, u8 req_ext_counters,
3006 			u8 clear_overflow_flags,
3007 			u8 clear_all_counters)
3008 {
3009 	struct sli4_cmd_read_link_stats *cmd = buf;
3010 	u32 flags;
3011 
3012 	memset(buf, 0, SLI4_BMBX_SIZE);
3013 
3014 	cmd->hdr.command = SLI4_MBX_CMD_READ_LNK_STAT;
3015 
3016 	flags = 0;
3017 	if (req_ext_counters)
3018 		flags |= SLI4_READ_LNKSTAT_REC;
3019 	if (clear_all_counters)
3020 		flags |= SLI4_READ_LNKSTAT_CLRC;
3021 	if (clear_overflow_flags)
3022 		flags |= SLI4_READ_LNKSTAT_CLOF;
3023 
3024 	cmd->dw1_flags = cpu_to_le32(flags);
3025 	return 0;
3026 }
3027 
3028 int
sli_cmd_read_status(struct sli4 * sli4,void * buf,u8 clear_counters)3029 sli_cmd_read_status(struct sli4 *sli4, void *buf, u8 clear_counters)
3030 {
3031 	struct sli4_cmd_read_status *cmd = buf;
3032 	u32 flags = 0;
3033 
3034 	memset(buf, 0, SLI4_BMBX_SIZE);
3035 
3036 	cmd->hdr.command = SLI4_MBX_CMD_READ_STATUS;
3037 	if (clear_counters)
3038 		flags |= SLI4_READSTATUS_CLEAR_COUNTERS;
3039 	else
3040 		flags &= ~SLI4_READSTATUS_CLEAR_COUNTERS;
3041 
3042 	cmd->dw1_flags = cpu_to_le32(flags);
3043 	return 0;
3044 }
3045 
3046 int
sli_cmd_init_link(struct sli4 * sli4,void * buf,u32 speed,u8 reset_alpa)3047 sli_cmd_init_link(struct sli4 *sli4, void *buf, u32 speed, u8 reset_alpa)
3048 {
3049 	struct sli4_cmd_init_link *init_link = buf;
3050 	u32 flags = 0;
3051 
3052 	memset(buf, 0, SLI4_BMBX_SIZE);
3053 
3054 	init_link->hdr.command = SLI4_MBX_CMD_INIT_LINK;
3055 
3056 	init_link->sel_reset_al_pa_dword =
3057 				cpu_to_le32(reset_alpa);
3058 	flags &= ~SLI4_INIT_LINK_F_LOOPBACK;
3059 
3060 	init_link->link_speed_sel_code = cpu_to_le32(speed);
3061 	switch (speed) {
3062 	case SLI4_LINK_SPEED_1G:
3063 	case SLI4_LINK_SPEED_2G:
3064 	case SLI4_LINK_SPEED_4G:
3065 	case SLI4_LINK_SPEED_8G:
3066 	case SLI4_LINK_SPEED_16G:
3067 	case SLI4_LINK_SPEED_32G:
3068 	case SLI4_LINK_SPEED_64G:
3069 		flags |= SLI4_INIT_LINK_F_FIXED_SPEED;
3070 		break;
3071 	case SLI4_LINK_SPEED_10G:
3072 		efc_log_info(sli4, "unsupported FC speed %d\n", speed);
3073 		init_link->flags0 = cpu_to_le32(flags);
3074 		return -EIO;
3075 	}
3076 
3077 	switch (sli4->topology) {
3078 	case SLI4_READ_CFG_TOPO_FC:
3079 		/* Attempt P2P but failover to FC-AL */
3080 		flags |= SLI4_INIT_LINK_F_FAIL_OVER;
3081 		flags |= SLI4_INIT_LINK_F_P2P_FAIL_OVER;
3082 		break;
3083 	case SLI4_READ_CFG_TOPO_FC_AL:
3084 		flags |= SLI4_INIT_LINK_F_FCAL_ONLY;
3085 		if (speed == SLI4_LINK_SPEED_16G ||
3086 		    speed == SLI4_LINK_SPEED_32G) {
3087 			efc_log_info(sli4, "unsupported FC-AL speed %d\n",
3088 				     speed);
3089 			init_link->flags0 = cpu_to_le32(flags);
3090 			return -EIO;
3091 		}
3092 		break;
3093 	case SLI4_READ_CFG_TOPO_NON_FC_AL:
3094 		flags |= SLI4_INIT_LINK_F_P2P_ONLY;
3095 		break;
3096 	default:
3097 
3098 		efc_log_info(sli4, "unsupported topology %#x\n", sli4->topology);
3099 
3100 		init_link->flags0 = cpu_to_le32(flags);
3101 		return -EIO;
3102 	}
3103 
3104 	flags &= ~SLI4_INIT_LINK_F_UNFAIR;
3105 	flags &= ~SLI4_INIT_LINK_F_NO_LIRP;
3106 	flags &= ~SLI4_INIT_LINK_F_LOOP_VALID_CHK;
3107 	flags &= ~SLI4_INIT_LINK_F_NO_LISA;
3108 	flags &= ~SLI4_INIT_LINK_F_PICK_HI_ALPA;
3109 	init_link->flags0 = cpu_to_le32(flags);
3110 
3111 	return 0;
3112 }
3113 
3114 int
sli_cmd_init_vfi(struct sli4 * sli4,void * buf,u16 vfi,u16 fcfi,u16 vpi)3115 sli_cmd_init_vfi(struct sli4 *sli4, void *buf, u16 vfi, u16 fcfi, u16 vpi)
3116 {
3117 	struct sli4_cmd_init_vfi *init_vfi = buf;
3118 	u16 flags = 0;
3119 
3120 	memset(buf, 0, SLI4_BMBX_SIZE);
3121 
3122 	init_vfi->hdr.command = SLI4_MBX_CMD_INIT_VFI;
3123 	init_vfi->vfi = cpu_to_le16(vfi);
3124 	init_vfi->fcfi = cpu_to_le16(fcfi);
3125 
3126 	/*
3127 	 * If the VPI is valid, initialize it at the same time as
3128 	 * the VFI
3129 	 */
3130 	if (vpi != U16_MAX) {
3131 		flags |= SLI4_INIT_VFI_FLAG_VP;
3132 		init_vfi->flags0_word = cpu_to_le16(flags);
3133 		init_vfi->vpi = cpu_to_le16(vpi);
3134 	}
3135 
3136 	return 0;
3137 }
3138 
3139 int
sli_cmd_init_vpi(struct sli4 * sli4,void * buf,u16 vpi,u16 vfi)3140 sli_cmd_init_vpi(struct sli4 *sli4, void *buf, u16 vpi, u16 vfi)
3141 {
3142 	struct sli4_cmd_init_vpi *init_vpi = buf;
3143 
3144 	memset(buf, 0, SLI4_BMBX_SIZE);
3145 
3146 	init_vpi->hdr.command = SLI4_MBX_CMD_INIT_VPI;
3147 	init_vpi->vpi = cpu_to_le16(vpi);
3148 	init_vpi->vfi = cpu_to_le16(vfi);
3149 
3150 	return 0;
3151 }
3152 
3153 int
sli_cmd_post_xri(struct sli4 * sli4,void * buf,u16 xri_base,u16 xri_count)3154 sli_cmd_post_xri(struct sli4 *sli4, void *buf, u16 xri_base, u16 xri_count)
3155 {
3156 	struct sli4_cmd_post_xri *post_xri = buf;
3157 	u16 xri_count_flags = 0;
3158 
3159 	memset(buf, 0, SLI4_BMBX_SIZE);
3160 
3161 	post_xri->hdr.command = SLI4_MBX_CMD_POST_XRI;
3162 	post_xri->xri_base = cpu_to_le16(xri_base);
3163 	xri_count_flags = xri_count & SLI4_POST_XRI_COUNT;
3164 	xri_count_flags |= SLI4_POST_XRI_FLAG_ENX;
3165 	xri_count_flags |= SLI4_POST_XRI_FLAG_VAL;
3166 	post_xri->xri_count_flags = cpu_to_le16(xri_count_flags);
3167 
3168 	return 0;
3169 }
3170 
3171 int
sli_cmd_release_xri(struct sli4 * sli4,void * buf,u8 num_xri)3172 sli_cmd_release_xri(struct sli4 *sli4, void *buf, u8 num_xri)
3173 {
3174 	struct sli4_cmd_release_xri *release_xri = buf;
3175 
3176 	memset(buf, 0, SLI4_BMBX_SIZE);
3177 
3178 	release_xri->hdr.command = SLI4_MBX_CMD_RELEASE_XRI;
3179 	release_xri->xri_count_word = cpu_to_le16(num_xri &
3180 					SLI4_RELEASE_XRI_COUNT);
3181 
3182 	return 0;
3183 }
3184 
3185 static int
sli_cmd_read_config(struct sli4 * sli4,void * buf)3186 sli_cmd_read_config(struct sli4 *sli4, void *buf)
3187 {
3188 	struct sli4_cmd_read_config *read_config = buf;
3189 
3190 	memset(buf, 0, SLI4_BMBX_SIZE);
3191 
3192 	read_config->hdr.command = SLI4_MBX_CMD_READ_CONFIG;
3193 
3194 	return 0;
3195 }
3196 
3197 int
sli_cmd_read_nvparms(struct sli4 * sli4,void * buf)3198 sli_cmd_read_nvparms(struct sli4 *sli4, void *buf)
3199 {
3200 	struct sli4_cmd_read_nvparms *read_nvparms = buf;
3201 
3202 	memset(buf, 0, SLI4_BMBX_SIZE);
3203 
3204 	read_nvparms->hdr.command = SLI4_MBX_CMD_READ_NVPARMS;
3205 
3206 	return 0;
3207 }
3208 
3209 int
sli_cmd_write_nvparms(struct sli4 * sli4,void * buf,u8 * wwpn,u8 * wwnn,u8 hard_alpa,u32 preferred_d_id)3210 sli_cmd_write_nvparms(struct sli4 *sli4, void *buf, u8 *wwpn, u8 *wwnn,
3211 		      u8 hard_alpa, u32 preferred_d_id)
3212 {
3213 	struct sli4_cmd_write_nvparms *write_nvparms = buf;
3214 
3215 	memset(buf, 0, SLI4_BMBX_SIZE);
3216 
3217 	write_nvparms->hdr.command = SLI4_MBX_CMD_WRITE_NVPARMS;
3218 	memcpy(write_nvparms->wwpn, wwpn, 8);
3219 	memcpy(write_nvparms->wwnn, wwnn, 8);
3220 
3221 	write_nvparms->hard_alpa_d_id =
3222 			cpu_to_le32((preferred_d_id << 8) | hard_alpa);
3223 	return 0;
3224 }
3225 
3226 static int
sli_cmd_read_rev(struct sli4 * sli4,void * buf,struct efc_dma * vpd)3227 sli_cmd_read_rev(struct sli4 *sli4, void *buf, struct efc_dma *vpd)
3228 {
3229 	struct sli4_cmd_read_rev *read_rev = buf;
3230 
3231 	memset(buf, 0, SLI4_BMBX_SIZE);
3232 
3233 	read_rev->hdr.command = SLI4_MBX_CMD_READ_REV;
3234 
3235 	if (vpd && vpd->size) {
3236 		read_rev->flags0_word |= cpu_to_le16(SLI4_READ_REV_FLAG_VPD);
3237 
3238 		read_rev->available_length_dword =
3239 			cpu_to_le32(vpd->size &
3240 				    SLI4_READ_REV_AVAILABLE_LENGTH);
3241 
3242 		read_rev->hostbuf.low =
3243 				cpu_to_le32(lower_32_bits(vpd->phys));
3244 		read_rev->hostbuf.high =
3245 				cpu_to_le32(upper_32_bits(vpd->phys));
3246 	}
3247 
3248 	return 0;
3249 }
3250 
3251 int
sli_cmd_read_sparm64(struct sli4 * sli4,void * buf,struct efc_dma * dma,u16 vpi)3252 sli_cmd_read_sparm64(struct sli4 *sli4, void *buf, struct efc_dma *dma, u16 vpi)
3253 {
3254 	struct sli4_cmd_read_sparm64 *read_sparm64 = buf;
3255 
3256 	if (vpi == U16_MAX) {
3257 		efc_log_err(sli4, "special VPI not supported!!!\n");
3258 		return -EIO;
3259 	}
3260 
3261 	if (!dma || !dma->phys) {
3262 		efc_log_err(sli4, "bad DMA buffer\n");
3263 		return -EIO;
3264 	}
3265 
3266 	memset(buf, 0, SLI4_BMBX_SIZE);
3267 
3268 	read_sparm64->hdr.command = SLI4_MBX_CMD_READ_SPARM64;
3269 
3270 	read_sparm64->bde_64.bde_type_buflen =
3271 			cpu_to_le32((SLI4_BDE_TYPE_VAL(64)) |
3272 				    (dma->size & SLI4_BDE_LEN_MASK));
3273 	read_sparm64->bde_64.u.data.low =
3274 			cpu_to_le32(lower_32_bits(dma->phys));
3275 	read_sparm64->bde_64.u.data.high =
3276 			cpu_to_le32(upper_32_bits(dma->phys));
3277 
3278 	read_sparm64->vpi = cpu_to_le16(vpi);
3279 
3280 	return 0;
3281 }
3282 
3283 int
sli_cmd_read_topology(struct sli4 * sli4,void * buf,struct efc_dma * dma)3284 sli_cmd_read_topology(struct sli4 *sli4, void *buf, struct efc_dma *dma)
3285 {
3286 	struct sli4_cmd_read_topology *read_topo = buf;
3287 
3288 	if (!dma || !dma->size)
3289 		return -EIO;
3290 
3291 	if (dma->size < SLI4_MIN_LOOP_MAP_BYTES) {
3292 		efc_log_err(sli4, "loop map buffer too small %zx\n", dma->size);
3293 		return -EIO;
3294 	}
3295 
3296 	memset(buf, 0, SLI4_BMBX_SIZE);
3297 
3298 	read_topo->hdr.command = SLI4_MBX_CMD_READ_TOPOLOGY;
3299 
3300 	memset(dma->virt, 0, dma->size);
3301 
3302 	read_topo->bde_loop_map.bde_type_buflen =
3303 					cpu_to_le32((SLI4_BDE_TYPE_VAL(64)) |
3304 					(dma->size & SLI4_BDE_LEN_MASK));
3305 	read_topo->bde_loop_map.u.data.low  =
3306 				cpu_to_le32(lower_32_bits(dma->phys));
3307 	read_topo->bde_loop_map.u.data.high =
3308 				cpu_to_le32(upper_32_bits(dma->phys));
3309 
3310 	return 0;
3311 }
3312 
3313 int
sli_cmd_reg_fcfi(struct sli4 * sli4,void * buf,u16 index,struct sli4_cmd_rq_cfg * rq_cfg)3314 sli_cmd_reg_fcfi(struct sli4 *sli4, void *buf, u16 index,
3315 		 struct sli4_cmd_rq_cfg *rq_cfg)
3316 {
3317 	struct sli4_cmd_reg_fcfi *reg_fcfi = buf;
3318 	u32 i;
3319 
3320 	memset(buf, 0, SLI4_BMBX_SIZE);
3321 
3322 	reg_fcfi->hdr.command = SLI4_MBX_CMD_REG_FCFI;
3323 
3324 	reg_fcfi->fcf_index = cpu_to_le16(index);
3325 
3326 	for (i = 0; i < SLI4_CMD_REG_FCFI_NUM_RQ_CFG; i++) {
3327 		switch (i) {
3328 		case 0:
3329 			reg_fcfi->rqid0 = rq_cfg[0].rq_id;
3330 			break;
3331 		case 1:
3332 			reg_fcfi->rqid1 = rq_cfg[1].rq_id;
3333 			break;
3334 		case 2:
3335 			reg_fcfi->rqid2 = rq_cfg[2].rq_id;
3336 			break;
3337 		case 3:
3338 			reg_fcfi->rqid3 = rq_cfg[3].rq_id;
3339 			break;
3340 		}
3341 		reg_fcfi->rq_cfg[i].r_ctl_mask = rq_cfg[i].r_ctl_mask;
3342 		reg_fcfi->rq_cfg[i].r_ctl_match = rq_cfg[i].r_ctl_match;
3343 		reg_fcfi->rq_cfg[i].type_mask = rq_cfg[i].type_mask;
3344 		reg_fcfi->rq_cfg[i].type_match = rq_cfg[i].type_match;
3345 	}
3346 
3347 	return 0;
3348 }
3349 
3350 int
sli_cmd_reg_fcfi_mrq(struct sli4 * sli4,void * buf,u8 mode,u16 fcf_index,u8 rq_selection_policy,u8 mrq_bit_mask,u16 num_mrqs,struct sli4_cmd_rq_cfg * rq_cfg)3351 sli_cmd_reg_fcfi_mrq(struct sli4 *sli4, void *buf, u8 mode, u16 fcf_index,
3352 		     u8 rq_selection_policy, u8 mrq_bit_mask, u16 num_mrqs,
3353 		     struct sli4_cmd_rq_cfg *rq_cfg)
3354 {
3355 	struct sli4_cmd_reg_fcfi_mrq *reg_fcfi_mrq = buf;
3356 	u32 i;
3357 	u32 mrq_flags = 0;
3358 
3359 	memset(buf, 0, SLI4_BMBX_SIZE);
3360 
3361 	reg_fcfi_mrq->hdr.command = SLI4_MBX_CMD_REG_FCFI_MRQ;
3362 	if (mode == SLI4_CMD_REG_FCFI_SET_FCFI_MODE) {
3363 		reg_fcfi_mrq->fcf_index = cpu_to_le16(fcf_index);
3364 		goto done;
3365 	}
3366 
3367 	reg_fcfi_mrq->dw8_vlan = cpu_to_le32(SLI4_REGFCFI_MRQ_MODE);
3368 
3369 	for (i = 0; i < SLI4_CMD_REG_FCFI_NUM_RQ_CFG; i++) {
3370 		reg_fcfi_mrq->rq_cfg[i].r_ctl_mask = rq_cfg[i].r_ctl_mask;
3371 		reg_fcfi_mrq->rq_cfg[i].r_ctl_match = rq_cfg[i].r_ctl_match;
3372 		reg_fcfi_mrq->rq_cfg[i].type_mask = rq_cfg[i].type_mask;
3373 		reg_fcfi_mrq->rq_cfg[i].type_match = rq_cfg[i].type_match;
3374 
3375 		switch (i) {
3376 		case 3:
3377 			reg_fcfi_mrq->rqid3 = rq_cfg[i].rq_id;
3378 			break;
3379 		case 2:
3380 			reg_fcfi_mrq->rqid2 = rq_cfg[i].rq_id;
3381 			break;
3382 		case 1:
3383 			reg_fcfi_mrq->rqid1 = rq_cfg[i].rq_id;
3384 			break;
3385 		case 0:
3386 			reg_fcfi_mrq->rqid0 = rq_cfg[i].rq_id;
3387 			break;
3388 		}
3389 	}
3390 
3391 	mrq_flags = num_mrqs & SLI4_REGFCFI_MRQ_MASK_NUM_PAIRS;
3392 	mrq_flags |= (mrq_bit_mask << 8);
3393 	mrq_flags |= (rq_selection_policy << 12);
3394 	reg_fcfi_mrq->dw9_mrqflags = cpu_to_le32(mrq_flags);
3395 done:
3396 	return 0;
3397 }
3398 
3399 int
sli_cmd_reg_rpi(struct sli4 * sli4,void * buf,u32 rpi,u32 vpi,u32 fc_id,struct efc_dma * dma,u8 update,u8 enable_t10_pi)3400 sli_cmd_reg_rpi(struct sli4 *sli4, void *buf, u32 rpi, u32 vpi, u32 fc_id,
3401 		struct efc_dma *dma, u8 update, u8 enable_t10_pi)
3402 {
3403 	struct sli4_cmd_reg_rpi *reg_rpi = buf;
3404 	u32 rportid_flags = 0;
3405 
3406 	memset(buf, 0, SLI4_BMBX_SIZE);
3407 
3408 	reg_rpi->hdr.command = SLI4_MBX_CMD_REG_RPI;
3409 
3410 	reg_rpi->rpi = cpu_to_le16(rpi);
3411 
3412 	rportid_flags = fc_id & SLI4_REGRPI_REMOTE_N_PORTID;
3413 
3414 	if (update)
3415 		rportid_flags |= SLI4_REGRPI_UPD;
3416 	else
3417 		rportid_flags &= ~SLI4_REGRPI_UPD;
3418 
3419 	if (enable_t10_pi)
3420 		rportid_flags |= SLI4_REGRPI_ETOW;
3421 	else
3422 		rportid_flags &= ~SLI4_REGRPI_ETOW;
3423 
3424 	reg_rpi->dw2_rportid_flags = cpu_to_le32(rportid_flags);
3425 
3426 	reg_rpi->bde_64.bde_type_buflen =
3427 		cpu_to_le32((SLI4_BDE_TYPE_VAL(64)) |
3428 			    (SLI4_REG_RPI_BUF_LEN & SLI4_BDE_LEN_MASK));
3429 	reg_rpi->bde_64.u.data.low  =
3430 		cpu_to_le32(lower_32_bits(dma->phys));
3431 	reg_rpi->bde_64.u.data.high =
3432 		cpu_to_le32(upper_32_bits(dma->phys));
3433 
3434 	reg_rpi->vpi = cpu_to_le16(vpi);
3435 
3436 	return 0;
3437 }
3438 
3439 int
sli_cmd_reg_vfi(struct sli4 * sli4,void * buf,size_t size,u16 vfi,u16 fcfi,struct efc_dma dma,u16 vpi,__be64 sli_wwpn,u32 fc_id)3440 sli_cmd_reg_vfi(struct sli4 *sli4, void *buf, size_t size,
3441 		u16 vfi, u16 fcfi, struct efc_dma dma,
3442 		u16 vpi, __be64 sli_wwpn, u32 fc_id)
3443 {
3444 	struct sli4_cmd_reg_vfi *reg_vfi = buf;
3445 
3446 	memset(buf, 0, SLI4_BMBX_SIZE);
3447 
3448 	reg_vfi->hdr.command = SLI4_MBX_CMD_REG_VFI;
3449 
3450 	reg_vfi->vfi = cpu_to_le16(vfi);
3451 
3452 	reg_vfi->fcfi = cpu_to_le16(fcfi);
3453 
3454 	reg_vfi->sparm.bde_type_buflen =
3455 		cpu_to_le32((SLI4_BDE_TYPE_VAL(64)) |
3456 			    (SLI4_REG_RPI_BUF_LEN & SLI4_BDE_LEN_MASK));
3457 	reg_vfi->sparm.u.data.low  =
3458 		cpu_to_le32(lower_32_bits(dma.phys));
3459 	reg_vfi->sparm.u.data.high =
3460 		cpu_to_le32(upper_32_bits(dma.phys));
3461 
3462 	reg_vfi->e_d_tov = cpu_to_le32(sli4->e_d_tov);
3463 	reg_vfi->r_a_tov = cpu_to_le32(sli4->r_a_tov);
3464 
3465 	reg_vfi->dw0w1_flags |= cpu_to_le16(SLI4_REGVFI_VP);
3466 	reg_vfi->vpi = cpu_to_le16(vpi);
3467 	memcpy(reg_vfi->wwpn, &sli_wwpn, sizeof(reg_vfi->wwpn));
3468 	reg_vfi->dw10_lportid_flags = cpu_to_le32(fc_id);
3469 
3470 	return 0;
3471 }
3472 
3473 int
sli_cmd_reg_vpi(struct sli4 * sli4,void * buf,u32 fc_id,__be64 sli_wwpn,u16 vpi,u16 vfi,bool update)3474 sli_cmd_reg_vpi(struct sli4 *sli4, void *buf, u32 fc_id, __be64 sli_wwpn,
3475 		u16 vpi, u16 vfi, bool update)
3476 {
3477 	struct sli4_cmd_reg_vpi *reg_vpi = buf;
3478 	u32 flags = 0;
3479 
3480 	memset(buf, 0, SLI4_BMBX_SIZE);
3481 
3482 	reg_vpi->hdr.command = SLI4_MBX_CMD_REG_VPI;
3483 
3484 	flags = (fc_id & SLI4_REGVPI_LOCAL_N_PORTID);
3485 	if (update)
3486 		flags |= SLI4_REGVPI_UPD;
3487 	else
3488 		flags &= ~SLI4_REGVPI_UPD;
3489 
3490 	reg_vpi->dw2_lportid_flags = cpu_to_le32(flags);
3491 	memcpy(reg_vpi->wwpn, &sli_wwpn, sizeof(reg_vpi->wwpn));
3492 	reg_vpi->vpi = cpu_to_le16(vpi);
3493 	reg_vpi->vfi = cpu_to_le16(vfi);
3494 
3495 	return 0;
3496 }
3497 
3498 static int
sli_cmd_request_features(struct sli4 * sli4,void * buf,u32 features_mask,bool query)3499 sli_cmd_request_features(struct sli4 *sli4, void *buf, u32 features_mask,
3500 			 bool query)
3501 {
3502 	struct sli4_cmd_request_features *req_features = buf;
3503 
3504 	memset(buf, 0, SLI4_BMBX_SIZE);
3505 
3506 	req_features->hdr.command = SLI4_MBX_CMD_RQST_FEATURES;
3507 
3508 	if (query)
3509 		req_features->dw1_qry = cpu_to_le32(SLI4_REQFEAT_QRY);
3510 
3511 	req_features->cmd = cpu_to_le32(features_mask);
3512 
3513 	return 0;
3514 }
3515 
3516 int
sli_cmd_unreg_fcfi(struct sli4 * sli4,void * buf,u16 indicator)3517 sli_cmd_unreg_fcfi(struct sli4 *sli4, void *buf, u16 indicator)
3518 {
3519 	struct sli4_cmd_unreg_fcfi *unreg_fcfi = buf;
3520 
3521 	memset(buf, 0, SLI4_BMBX_SIZE);
3522 
3523 	unreg_fcfi->hdr.command = SLI4_MBX_CMD_UNREG_FCFI;
3524 	unreg_fcfi->fcfi = cpu_to_le16(indicator);
3525 
3526 	return 0;
3527 }
3528 
3529 int
sli_cmd_unreg_rpi(struct sli4 * sli4,void * buf,u16 indicator,enum sli4_resource which,u32 fc_id)3530 sli_cmd_unreg_rpi(struct sli4 *sli4, void *buf, u16 indicator,
3531 		  enum sli4_resource which, u32 fc_id)
3532 {
3533 	struct sli4_cmd_unreg_rpi *unreg_rpi = buf;
3534 	u32 flags = 0;
3535 
3536 	memset(buf, 0, SLI4_BMBX_SIZE);
3537 
3538 	unreg_rpi->hdr.command = SLI4_MBX_CMD_UNREG_RPI;
3539 	switch (which) {
3540 	case SLI4_RSRC_RPI:
3541 		flags |= SLI4_UNREG_RPI_II_RPI;
3542 		if (fc_id == U32_MAX)
3543 			break;
3544 
3545 		flags |= SLI4_UNREG_RPI_DP;
3546 		unreg_rpi->dw2_dest_n_portid =
3547 			cpu_to_le32(fc_id & SLI4_UNREG_RPI_DEST_N_PORTID_MASK);
3548 		break;
3549 	case SLI4_RSRC_VPI:
3550 		flags |= SLI4_UNREG_RPI_II_VPI;
3551 		break;
3552 	case SLI4_RSRC_VFI:
3553 		flags |= SLI4_UNREG_RPI_II_VFI;
3554 		break;
3555 	case SLI4_RSRC_FCFI:
3556 		flags |= SLI4_UNREG_RPI_II_FCFI;
3557 		break;
3558 	default:
3559 		efc_log_info(sli4, "unknown type %#x\n", which);
3560 		return -EIO;
3561 	}
3562 
3563 	unreg_rpi->dw1w1_flags = cpu_to_le16(flags);
3564 	unreg_rpi->index = cpu_to_le16(indicator);
3565 
3566 	return 0;
3567 }
3568 
3569 int
sli_cmd_unreg_vfi(struct sli4 * sli4,void * buf,u16 index,u32 which)3570 sli_cmd_unreg_vfi(struct sli4 *sli4, void *buf, u16 index, u32 which)
3571 {
3572 	struct sli4_cmd_unreg_vfi *unreg_vfi = buf;
3573 
3574 	memset(buf, 0, SLI4_BMBX_SIZE);
3575 
3576 	unreg_vfi->hdr.command = SLI4_MBX_CMD_UNREG_VFI;
3577 	switch (which) {
3578 	case SLI4_UNREG_TYPE_DOMAIN:
3579 		unreg_vfi->index = cpu_to_le16(index);
3580 		break;
3581 	case SLI4_UNREG_TYPE_FCF:
3582 		unreg_vfi->index = cpu_to_le16(index);
3583 		break;
3584 	case SLI4_UNREG_TYPE_ALL:
3585 		unreg_vfi->index = cpu_to_le16(U32_MAX);
3586 		break;
3587 	default:
3588 		return -EIO;
3589 	}
3590 
3591 	if (which != SLI4_UNREG_TYPE_DOMAIN)
3592 		unreg_vfi->dw2_flags = cpu_to_le16(SLI4_UNREG_VFI_II_FCFI);
3593 
3594 	return 0;
3595 }
3596 
3597 int
sli_cmd_unreg_vpi(struct sli4 * sli4,void * buf,u16 indicator,u32 which)3598 sli_cmd_unreg_vpi(struct sli4 *sli4, void *buf, u16 indicator, u32 which)
3599 {
3600 	struct sli4_cmd_unreg_vpi *unreg_vpi = buf;
3601 	u32 flags = 0;
3602 
3603 	memset(buf, 0, SLI4_BMBX_SIZE);
3604 
3605 	unreg_vpi->hdr.command = SLI4_MBX_CMD_UNREG_VPI;
3606 	unreg_vpi->index = cpu_to_le16(indicator);
3607 	switch (which) {
3608 	case SLI4_UNREG_TYPE_PORT:
3609 		flags |= SLI4_UNREG_VPI_II_VPI;
3610 		break;
3611 	case SLI4_UNREG_TYPE_DOMAIN:
3612 		flags |= SLI4_UNREG_VPI_II_VFI;
3613 		break;
3614 	case SLI4_UNREG_TYPE_FCF:
3615 		flags |= SLI4_UNREG_VPI_II_FCFI;
3616 		break;
3617 	case SLI4_UNREG_TYPE_ALL:
3618 		/* override indicator */
3619 		unreg_vpi->index = cpu_to_le16(U32_MAX);
3620 		flags |= SLI4_UNREG_VPI_II_FCFI;
3621 		break;
3622 	default:
3623 		return -EIO;
3624 	}
3625 
3626 	unreg_vpi->dw2w0_flags = cpu_to_le16(flags);
3627 	return 0;
3628 }
3629 
3630 static int
sli_cmd_common_modify_eq_delay(struct sli4 * sli4,void * buf,struct sli4_queue * q,int num_q,u32 shift,u32 delay_mult)3631 sli_cmd_common_modify_eq_delay(struct sli4 *sli4, void *buf,
3632 			       struct sli4_queue *q, int num_q, u32 shift,
3633 			       u32 delay_mult)
3634 {
3635 	struct sli4_rqst_cmn_modify_eq_delay *req = NULL;
3636 	int i;
3637 
3638 	req = sli_config_cmd_init(sli4, buf,
3639 			SLI4_CFG_PYLD_LENGTH(cmn_modify_eq_delay), NULL);
3640 	if (!req)
3641 		return -EIO;
3642 
3643 	sli_cmd_fill_hdr(&req->hdr, SLI4_CMN_MODIFY_EQ_DELAY,
3644 			 SLI4_SUBSYSTEM_COMMON, CMD_V0,
3645 			 SLI4_RQST_PYLD_LEN(cmn_modify_eq_delay));
3646 	req->num_eq = cpu_to_le32(num_q);
3647 
3648 	for (i = 0; i < num_q; i++) {
3649 		req->eq_delay_record[i].eq_id = cpu_to_le32(q[i].id);
3650 		req->eq_delay_record[i].phase = cpu_to_le32(shift);
3651 		req->eq_delay_record[i].delay_multiplier =
3652 			cpu_to_le32(delay_mult);
3653 	}
3654 
3655 	return 0;
3656 }
3657 
3658 void
sli4_cmd_lowlevel_set_watchdog(struct sli4 * sli4,void * buf,size_t size,u16 timeout)3659 sli4_cmd_lowlevel_set_watchdog(struct sli4 *sli4, void *buf,
3660 			       size_t size, u16 timeout)
3661 {
3662 	struct sli4_rqst_lowlevel_set_watchdog *req = NULL;
3663 
3664 	req = sli_config_cmd_init(sli4, buf,
3665 			SLI4_CFG_PYLD_LENGTH(lowlevel_set_watchdog), NULL);
3666 	if (!req)
3667 		return;
3668 
3669 	sli_cmd_fill_hdr(&req->hdr, SLI4_OPC_LOWLEVEL_SET_WATCHDOG,
3670 			 SLI4_SUBSYSTEM_LOWLEVEL, CMD_V0,
3671 			 SLI4_RQST_PYLD_LEN(lowlevel_set_watchdog));
3672 	req->watchdog_timeout = cpu_to_le16(timeout);
3673 }
3674 
3675 static int
sli_cmd_common_get_cntl_attributes(struct sli4 * sli4,void * buf,struct efc_dma * dma)3676 sli_cmd_common_get_cntl_attributes(struct sli4 *sli4, void *buf,
3677 				   struct efc_dma *dma)
3678 {
3679 	struct sli4_rqst_hdr *hdr = NULL;
3680 
3681 	hdr = sli_config_cmd_init(sli4, buf, SLI4_RQST_CMDSZ(hdr), dma);
3682 	if (!hdr)
3683 		return -EIO;
3684 
3685 	hdr->opcode = SLI4_CMN_GET_CNTL_ATTRIBUTES;
3686 	hdr->subsystem = SLI4_SUBSYSTEM_COMMON;
3687 	hdr->request_length = cpu_to_le32(dma->size);
3688 
3689 	return 0;
3690 }
3691 
3692 static int
sli_cmd_common_get_cntl_addl_attributes(struct sli4 * sli4,void * buf,struct efc_dma * dma)3693 sli_cmd_common_get_cntl_addl_attributes(struct sli4 *sli4, void *buf,
3694 					struct efc_dma *dma)
3695 {
3696 	struct sli4_rqst_hdr *hdr = NULL;
3697 
3698 	hdr = sli_config_cmd_init(sli4, buf, SLI4_RQST_CMDSZ(hdr), dma);
3699 	if (!hdr)
3700 		return -EIO;
3701 
3702 	hdr->opcode = SLI4_CMN_GET_CNTL_ADDL_ATTRS;
3703 	hdr->subsystem = SLI4_SUBSYSTEM_COMMON;
3704 	hdr->request_length = cpu_to_le32(dma->size);
3705 
3706 	return 0;
3707 }
3708 
3709 int
sli_cmd_common_nop(struct sli4 * sli4,void * buf,uint64_t context)3710 sli_cmd_common_nop(struct sli4 *sli4, void *buf, uint64_t context)
3711 {
3712 	struct sli4_rqst_cmn_nop *nop = NULL;
3713 
3714 	nop = sli_config_cmd_init(sli4, buf, SLI4_CFG_PYLD_LENGTH(cmn_nop),
3715 				  NULL);
3716 	if (!nop)
3717 		return -EIO;
3718 
3719 	sli_cmd_fill_hdr(&nop->hdr, SLI4_CMN_NOP, SLI4_SUBSYSTEM_COMMON,
3720 			 CMD_V0, SLI4_RQST_PYLD_LEN(cmn_nop));
3721 
3722 	memcpy(&nop->context, &context, sizeof(context));
3723 
3724 	return 0;
3725 }
3726 
3727 int
sli_cmd_common_get_resource_extent_info(struct sli4 * sli4,void * buf,u16 rtype)3728 sli_cmd_common_get_resource_extent_info(struct sli4 *sli4, void *buf, u16 rtype)
3729 {
3730 	struct sli4_rqst_cmn_get_resource_extent_info *ext = NULL;
3731 
3732 	ext = sli_config_cmd_init(sli4, buf,
3733 			SLI4_RQST_CMDSZ(cmn_get_resource_extent_info), NULL);
3734 	if (!ext)
3735 		return -EIO;
3736 
3737 	sli_cmd_fill_hdr(&ext->hdr, SLI4_CMN_GET_RSC_EXTENT_INFO,
3738 			 SLI4_SUBSYSTEM_COMMON, CMD_V0,
3739 			 SLI4_RQST_PYLD_LEN(cmn_get_resource_extent_info));
3740 
3741 	ext->resource_type = cpu_to_le16(rtype);
3742 
3743 	return 0;
3744 }
3745 
3746 int
sli_cmd_common_get_sli4_parameters(struct sli4 * sli4,void * buf)3747 sli_cmd_common_get_sli4_parameters(struct sli4 *sli4, void *buf)
3748 {
3749 	struct sli4_rqst_hdr *hdr = NULL;
3750 
3751 	hdr = sli_config_cmd_init(sli4, buf,
3752 			SLI4_CFG_PYLD_LENGTH(cmn_get_sli4_params), NULL);
3753 	if (!hdr)
3754 		return -EIO;
3755 
3756 	hdr->opcode = SLI4_CMN_GET_SLI4_PARAMS;
3757 	hdr->subsystem = SLI4_SUBSYSTEM_COMMON;
3758 	hdr->request_length = SLI4_RQST_PYLD_LEN(cmn_get_sli4_params);
3759 
3760 	return 0;
3761 }
3762 
3763 static int
sli_cmd_common_get_port_name(struct sli4 * sli4,void * buf)3764 sli_cmd_common_get_port_name(struct sli4 *sli4, void *buf)
3765 {
3766 	struct sli4_rqst_cmn_get_port_name *pname;
3767 
3768 	pname = sli_config_cmd_init(sli4, buf,
3769 			SLI4_CFG_PYLD_LENGTH(cmn_get_port_name), NULL);
3770 	if (!pname)
3771 		return -EIO;
3772 
3773 	sli_cmd_fill_hdr(&pname->hdr, SLI4_CMN_GET_PORT_NAME,
3774 			 SLI4_SUBSYSTEM_COMMON, CMD_V1,
3775 			 SLI4_RQST_PYLD_LEN(cmn_get_port_name));
3776 
3777 	/* Set the port type value (ethernet=0, FC=1) for V1 commands */
3778 	pname->port_type = SLI4_PORT_TYPE_FC;
3779 
3780 	return 0;
3781 }
3782 
3783 int
sli_cmd_common_write_object(struct sli4 * sli4,void * buf,u16 noc,u16 eof,u32 desired_write_length,u32 offset,char * obj_name,struct efc_dma * dma)3784 sli_cmd_common_write_object(struct sli4 *sli4, void *buf, u16 noc,
3785 			    u16 eof, u32 desired_write_length,
3786 			    u32 offset, char *obj_name,
3787 			    struct efc_dma *dma)
3788 {
3789 	struct sli4_rqst_cmn_write_object *wr_obj = NULL;
3790 	struct sli4_bde *bde;
3791 	u32 dwflags = 0;
3792 
3793 	wr_obj = sli_config_cmd_init(sli4, buf,
3794 			SLI4_RQST_CMDSZ(cmn_write_object) + sizeof(*bde), NULL);
3795 	if (!wr_obj)
3796 		return -EIO;
3797 
3798 	sli_cmd_fill_hdr(&wr_obj->hdr, SLI4_CMN_WRITE_OBJECT,
3799 		SLI4_SUBSYSTEM_COMMON, CMD_V0,
3800 		SLI4_RQST_PYLD_LEN_VAR(cmn_write_object, sizeof(*bde)));
3801 
3802 	if (noc)
3803 		dwflags |= SLI4_RQ_DES_WRITE_LEN_NOC;
3804 	if (eof)
3805 		dwflags |= SLI4_RQ_DES_WRITE_LEN_EOF;
3806 	dwflags |= (desired_write_length & SLI4_RQ_DES_WRITE_LEN);
3807 
3808 	wr_obj->desired_write_len_dword = cpu_to_le32(dwflags);
3809 
3810 	wr_obj->write_offset = cpu_to_le32(offset);
3811 	strncpy(wr_obj->object_name, obj_name, sizeof(wr_obj->object_name) - 1);
3812 	wr_obj->host_buffer_descriptor_count = cpu_to_le32(1);
3813 
3814 	bde = (struct sli4_bde *)wr_obj->host_buffer_descriptor;
3815 
3816 	/* Setup to transfer xfer_size bytes to device */
3817 	bde->bde_type_buflen =
3818 		cpu_to_le32((SLI4_BDE_TYPE_VAL(64)) |
3819 			    (desired_write_length & SLI4_BDE_LEN_MASK));
3820 	bde->u.data.low = cpu_to_le32(lower_32_bits(dma->phys));
3821 	bde->u.data.high = cpu_to_le32(upper_32_bits(dma->phys));
3822 
3823 	return 0;
3824 }
3825 
3826 int
sli_cmd_common_delete_object(struct sli4 * sli4,void * buf,char * obj_name)3827 sli_cmd_common_delete_object(struct sli4 *sli4, void *buf, char *obj_name)
3828 {
3829 	struct sli4_rqst_cmn_delete_object *req = NULL;
3830 
3831 	req = sli_config_cmd_init(sli4, buf,
3832 				  SLI4_RQST_CMDSZ(cmn_delete_object), NULL);
3833 	if (!req)
3834 		return -EIO;
3835 
3836 	sli_cmd_fill_hdr(&req->hdr, SLI4_CMN_DELETE_OBJECT,
3837 			 SLI4_SUBSYSTEM_COMMON, CMD_V0,
3838 			 SLI4_RQST_PYLD_LEN(cmn_delete_object));
3839 
3840 	strncpy(req->object_name, obj_name, sizeof(req->object_name) - 1);
3841 	return 0;
3842 }
3843 
3844 int
sli_cmd_common_read_object(struct sli4 * sli4,void * buf,u32 desired_read_len,u32 offset,char * obj_name,struct efc_dma * dma)3845 sli_cmd_common_read_object(struct sli4 *sli4, void *buf, u32 desired_read_len,
3846 			   u32 offset, char *obj_name, struct efc_dma *dma)
3847 {
3848 	struct sli4_rqst_cmn_read_object *rd_obj = NULL;
3849 	struct sli4_bde *bde;
3850 
3851 	rd_obj = sli_config_cmd_init(sli4, buf,
3852 			SLI4_RQST_CMDSZ(cmn_read_object) + sizeof(*bde), NULL);
3853 	if (!rd_obj)
3854 		return -EIO;
3855 
3856 	sli_cmd_fill_hdr(&rd_obj->hdr, SLI4_CMN_READ_OBJECT,
3857 		SLI4_SUBSYSTEM_COMMON, CMD_V0,
3858 		SLI4_RQST_PYLD_LEN_VAR(cmn_read_object, sizeof(*bde)));
3859 	rd_obj->desired_read_length_dword =
3860 		cpu_to_le32(desired_read_len & SLI4_REQ_DESIRE_READLEN);
3861 
3862 	rd_obj->read_offset = cpu_to_le32(offset);
3863 	strncpy(rd_obj->object_name, obj_name, sizeof(rd_obj->object_name) - 1);
3864 	rd_obj->host_buffer_descriptor_count = cpu_to_le32(1);
3865 
3866 	bde = (struct sli4_bde *)rd_obj->host_buffer_descriptor;
3867 
3868 	/* Setup to transfer xfer_size bytes to device */
3869 	bde->bde_type_buflen =
3870 		cpu_to_le32((SLI4_BDE_TYPE_VAL(64)) |
3871 			    (desired_read_len & SLI4_BDE_LEN_MASK));
3872 	if (dma) {
3873 		bde->u.data.low = cpu_to_le32(lower_32_bits(dma->phys));
3874 		bde->u.data.high = cpu_to_le32(upper_32_bits(dma->phys));
3875 	} else {
3876 		bde->u.data.low = 0;
3877 		bde->u.data.high = 0;
3878 	}
3879 
3880 	return 0;
3881 }
3882 
3883 int
sli_cmd_dmtf_exec_clp_cmd(struct sli4 * sli4,void * buf,struct efc_dma * cmd,struct efc_dma * resp)3884 sli_cmd_dmtf_exec_clp_cmd(struct sli4 *sli4, void *buf, struct efc_dma *cmd,
3885 			  struct efc_dma *resp)
3886 {
3887 	struct sli4_rqst_dmtf_exec_clp_cmd *clp_cmd = NULL;
3888 
3889 	clp_cmd = sli_config_cmd_init(sli4, buf,
3890 				SLI4_RQST_CMDSZ(dmtf_exec_clp_cmd), NULL);
3891 	if (!clp_cmd)
3892 		return -EIO;
3893 
3894 	sli_cmd_fill_hdr(&clp_cmd->hdr, DMTF_EXEC_CLP_CMD, SLI4_SUBSYSTEM_DMTF,
3895 			 CMD_V0, SLI4_RQST_PYLD_LEN(dmtf_exec_clp_cmd));
3896 
3897 	clp_cmd->cmd_buf_length = cpu_to_le32(cmd->size);
3898 	clp_cmd->cmd_buf_addr_low =  cpu_to_le32(lower_32_bits(cmd->phys));
3899 	clp_cmd->cmd_buf_addr_high =  cpu_to_le32(upper_32_bits(cmd->phys));
3900 	clp_cmd->resp_buf_length = cpu_to_le32(resp->size);
3901 	clp_cmd->resp_buf_addr_low =  cpu_to_le32(lower_32_bits(resp->phys));
3902 	clp_cmd->resp_buf_addr_high =  cpu_to_le32(upper_32_bits(resp->phys));
3903 	return 0;
3904 }
3905 
3906 int
sli_cmd_common_set_dump_location(struct sli4 * sli4,void * buf,bool query,bool is_buffer_list,struct efc_dma * buffer,u8 fdb)3907 sli_cmd_common_set_dump_location(struct sli4 *sli4, void *buf, bool query,
3908 				 bool is_buffer_list,
3909 				 struct efc_dma *buffer, u8 fdb)
3910 {
3911 	struct sli4_rqst_cmn_set_dump_location *set_dump_loc = NULL;
3912 	u32 buffer_length_flag = 0;
3913 
3914 	set_dump_loc = sli_config_cmd_init(sli4, buf,
3915 				SLI4_RQST_CMDSZ(cmn_set_dump_location), NULL);
3916 	if (!set_dump_loc)
3917 		return -EIO;
3918 
3919 	sli_cmd_fill_hdr(&set_dump_loc->hdr, SLI4_CMN_SET_DUMP_LOCATION,
3920 			 SLI4_SUBSYSTEM_COMMON, CMD_V0,
3921 			 SLI4_RQST_PYLD_LEN(cmn_set_dump_location));
3922 
3923 	if (is_buffer_list)
3924 		buffer_length_flag |= SLI4_CMN_SET_DUMP_BLP;
3925 
3926 	if (query)
3927 		buffer_length_flag |= SLI4_CMN_SET_DUMP_QRY;
3928 
3929 	if (fdb)
3930 		buffer_length_flag |= SLI4_CMN_SET_DUMP_FDB;
3931 
3932 	if (buffer) {
3933 		set_dump_loc->buf_addr_low =
3934 			cpu_to_le32(lower_32_bits(buffer->phys));
3935 		set_dump_loc->buf_addr_high =
3936 			cpu_to_le32(upper_32_bits(buffer->phys));
3937 
3938 		buffer_length_flag |=
3939 			buffer->len & SLI4_CMN_SET_DUMP_BUFFER_LEN;
3940 	} else {
3941 		set_dump_loc->buf_addr_low = 0;
3942 		set_dump_loc->buf_addr_high = 0;
3943 		set_dump_loc->buffer_length_dword = 0;
3944 	}
3945 	set_dump_loc->buffer_length_dword = cpu_to_le32(buffer_length_flag);
3946 	return 0;
3947 }
3948 
3949 int
sli_cmd_common_set_features(struct sli4 * sli4,void * buf,u32 feature,u32 param_len,void * parameter)3950 sli_cmd_common_set_features(struct sli4 *sli4, void *buf, u32 feature,
3951 			    u32 param_len, void *parameter)
3952 {
3953 	struct sli4_rqst_cmn_set_features *cmd = NULL;
3954 
3955 	cmd = sli_config_cmd_init(sli4, buf,
3956 				  SLI4_RQST_CMDSZ(cmn_set_features), NULL);
3957 	if (!cmd)
3958 		return -EIO;
3959 
3960 	sli_cmd_fill_hdr(&cmd->hdr, SLI4_CMN_SET_FEATURES,
3961 			 SLI4_SUBSYSTEM_COMMON, CMD_V0,
3962 			 SLI4_RQST_PYLD_LEN(cmn_set_features));
3963 
3964 	cmd->feature = cpu_to_le32(feature);
3965 	cmd->param_len = cpu_to_le32(param_len);
3966 	memcpy(cmd->params, parameter, param_len);
3967 
3968 	return 0;
3969 }
3970 
3971 int
sli_cqe_mq(struct sli4 * sli4,void * buf)3972 sli_cqe_mq(struct sli4 *sli4, void *buf)
3973 {
3974 	struct sli4_mcqe *mcqe = buf;
3975 	u32 dwflags = le32_to_cpu(mcqe->dw3_flags);
3976 	/*
3977 	 * Firmware can split mbx completions into two MCQEs: first with only
3978 	 * the "consumed" bit set and a second with the "complete" bit set.
3979 	 * Thus, ignore MCQE unless "complete" is set.
3980 	 */
3981 	if (!(dwflags & SLI4_MCQE_COMPLETED))
3982 		return SLI4_MCQE_STATUS_NOT_COMPLETED;
3983 
3984 	if (le16_to_cpu(mcqe->completion_status)) {
3985 		efc_log_info(sli4, "status(st=%#x ext=%#x con=%d cmp=%d ae=%d val=%d)\n",
3986 			     le16_to_cpu(mcqe->completion_status),
3987 			     le16_to_cpu(mcqe->extended_status),
3988 			     (dwflags & SLI4_MCQE_CONSUMED),
3989 			     (dwflags & SLI4_MCQE_COMPLETED),
3990 			     (dwflags & SLI4_MCQE_AE),
3991 			     (dwflags & SLI4_MCQE_VALID));
3992 	}
3993 
3994 	return le16_to_cpu(mcqe->completion_status);
3995 }
3996 
3997 int
sli_cqe_async(struct sli4 * sli4,void * buf)3998 sli_cqe_async(struct sli4 *sli4, void *buf)
3999 {
4000 	struct sli4_acqe *acqe = buf;
4001 	int rc = -EIO;
4002 
4003 	if (!buf) {
4004 		efc_log_err(sli4, "bad parameter sli4=%p buf=%p\n", sli4, buf);
4005 		return -EIO;
4006 	}
4007 
4008 	switch (acqe->event_code) {
4009 	case SLI4_ACQE_EVENT_CODE_LINK_STATE:
4010 		efc_log_info(sli4, "Unsupported by FC link, evt code:%#x\n",
4011 			     acqe->event_code);
4012 		break;
4013 	case SLI4_ACQE_EVENT_CODE_GRP_5:
4014 		efc_log_info(sli4, "ACQE GRP5\n");
4015 		break;
4016 	case SLI4_ACQE_EVENT_CODE_SLI_PORT_EVENT:
4017 		efc_log_info(sli4, "ACQE SLI Port, type=0x%x, data1,2=0x%08x,0x%08x\n",
4018 			     acqe->event_type,
4019 			     le32_to_cpu(acqe->event_data[0]),
4020 			     le32_to_cpu(acqe->event_data[1]));
4021 		break;
4022 	case SLI4_ACQE_EVENT_CODE_FC_LINK_EVENT:
4023 		rc = sli_fc_process_link_attention(sli4, buf);
4024 		break;
4025 	default:
4026 		efc_log_info(sli4, "ACQE unknown=%#x\n", acqe->event_code);
4027 	}
4028 
4029 	return rc;
4030 }
4031 
4032 bool
sli_fw_ready(struct sli4 * sli4)4033 sli_fw_ready(struct sli4 *sli4)
4034 {
4035 	u32 val;
4036 
4037 	/* Determine if the chip FW is in a ready state */
4038 	val = sli_reg_read_status(sli4);
4039 	return (val & SLI4_PORT_STATUS_RDY) ? 1 : 0;
4040 }
4041 
4042 static bool
sli_wait_for_fw_ready(struct sli4 * sli4,u32 timeout_ms)4043 sli_wait_for_fw_ready(struct sli4 *sli4, u32 timeout_ms)
4044 {
4045 	unsigned long end;
4046 
4047 	end = jiffies + msecs_to_jiffies(timeout_ms);
4048 
4049 	do {
4050 		if (sli_fw_ready(sli4))
4051 			return true;
4052 
4053 		usleep_range(1000, 2000);
4054 	} while (time_before(jiffies, end));
4055 
4056 	return false;
4057 }
4058 
4059 static bool
sli_sliport_reset(struct sli4 * sli4)4060 sli_sliport_reset(struct sli4 *sli4)
4061 {
4062 	bool rc;
4063 	u32 val;
4064 
4065 	val = SLI4_PORT_CTRL_IP;
4066 	/* Initialize port, endian */
4067 	writel(val, (sli4->reg[0] + SLI4_PORT_CTRL_REG));
4068 
4069 	rc = sli_wait_for_fw_ready(sli4, SLI4_FW_READY_TIMEOUT_MSEC);
4070 	if (!rc)
4071 		efc_log_crit(sli4, "port failed to become ready after initialization\n");
4072 
4073 	return rc;
4074 }
4075 
4076 static bool
sli_fw_init(struct sli4 * sli4)4077 sli_fw_init(struct sli4 *sli4)
4078 {
4079 	/*
4080 	 * Is firmware ready for operation?
4081 	 */
4082 	if (!sli_wait_for_fw_ready(sli4, SLI4_FW_READY_TIMEOUT_MSEC)) {
4083 		efc_log_crit(sli4, "FW status is NOT ready\n");
4084 		return false;
4085 	}
4086 
4087 	/*
4088 	 * Reset port to a known state
4089 	 */
4090 	return sli_sliport_reset(sli4);
4091 }
4092 
4093 static int
sli_request_features(struct sli4 * sli4,u32 * features,bool query)4094 sli_request_features(struct sli4 *sli4, u32 *features, bool query)
4095 {
4096 	struct sli4_cmd_request_features *req_features = sli4->bmbx.virt;
4097 
4098 	if (sli_cmd_request_features(sli4, sli4->bmbx.virt, *features, query)) {
4099 		efc_log_err(sli4, "bad REQUEST_FEATURES write\n");
4100 		return -EIO;
4101 	}
4102 
4103 	if (sli_bmbx_command(sli4)) {
4104 		efc_log_crit(sli4, "bootstrap mailbox write fail\n");
4105 		return -EIO;
4106 	}
4107 
4108 	if (le16_to_cpu(req_features->hdr.status)) {
4109 		efc_log_err(sli4, "REQUEST_FEATURES bad status %#x\n",
4110 			    le16_to_cpu(req_features->hdr.status));
4111 		return -EIO;
4112 	}
4113 
4114 	*features = le32_to_cpu(req_features->resp);
4115 	return 0;
4116 }
4117 
4118 void
sli_calc_max_qentries(struct sli4 * sli4)4119 sli_calc_max_qentries(struct sli4 *sli4)
4120 {
4121 	enum sli4_qtype q;
4122 	u32 qentries;
4123 
4124 	for (q = SLI4_QTYPE_EQ; q < SLI4_QTYPE_MAX; q++) {
4125 		sli4->qinfo.max_qentries[q] =
4126 			sli_convert_mask_to_count(sli4->qinfo.count_method[q],
4127 						  sli4->qinfo.count_mask[q]);
4128 	}
4129 
4130 	/* single, contiguous DMA allocations will be called for each queue
4131 	 * of size (max_qentries * queue entry size); since these can be large,
4132 	 * check against the OS max DMA allocation size
4133 	 */
4134 	for (q = SLI4_QTYPE_EQ; q < SLI4_QTYPE_MAX; q++) {
4135 		qentries = sli4->qinfo.max_qentries[q];
4136 
4137 		efc_log_info(sli4, "[%s]: max_qentries from %d to %d\n",
4138 			     SLI4_QNAME[q],
4139 			     sli4->qinfo.max_qentries[q], qentries);
4140 		sli4->qinfo.max_qentries[q] = qentries;
4141 	}
4142 }
4143 
4144 static int
sli_get_read_config(struct sli4 * sli4)4145 sli_get_read_config(struct sli4 *sli4)
4146 {
4147 	struct sli4_rsp_read_config *conf = sli4->bmbx.virt;
4148 	u32 i, total;
4149 	u32 *base;
4150 
4151 	if (sli_cmd_read_config(sli4, sli4->bmbx.virt)) {
4152 		efc_log_err(sli4, "bad READ_CONFIG write\n");
4153 		return -EIO;
4154 	}
4155 
4156 	if (sli_bmbx_command(sli4)) {
4157 		efc_log_crit(sli4, "bootstrap mailbox fail (READ_CONFIG)\n");
4158 		return -EIO;
4159 	}
4160 
4161 	if (le16_to_cpu(conf->hdr.status)) {
4162 		efc_log_err(sli4, "READ_CONFIG bad status %#x\n",
4163 			    le16_to_cpu(conf->hdr.status));
4164 		return -EIO;
4165 	}
4166 
4167 	sli4->params.has_extents =
4168 	  le32_to_cpu(conf->ext_dword) & SLI4_READ_CFG_RESP_RESOURCE_EXT;
4169 	if (sli4->params.has_extents) {
4170 		efc_log_err(sli4, "extents not supported\n");
4171 		return -EIO;
4172 	}
4173 
4174 	base = sli4->ext[0].base;
4175 	if (!base) {
4176 		int size = SLI4_RSRC_MAX * sizeof(u32);
4177 
4178 		base = kzalloc(size, GFP_KERNEL);
4179 		if (!base)
4180 			return -EIO;
4181 	}
4182 
4183 	for (i = 0; i < SLI4_RSRC_MAX; i++) {
4184 		sli4->ext[i].number = 1;
4185 		sli4->ext[i].n_alloc = 0;
4186 		sli4->ext[i].base = &base[i];
4187 	}
4188 
4189 	sli4->ext[SLI4_RSRC_VFI].base[0] = le16_to_cpu(conf->vfi_base);
4190 	sli4->ext[SLI4_RSRC_VFI].size = le16_to_cpu(conf->vfi_count);
4191 
4192 	sli4->ext[SLI4_RSRC_VPI].base[0] = le16_to_cpu(conf->vpi_base);
4193 	sli4->ext[SLI4_RSRC_VPI].size = le16_to_cpu(conf->vpi_count);
4194 
4195 	sli4->ext[SLI4_RSRC_RPI].base[0] = le16_to_cpu(conf->rpi_base);
4196 	sli4->ext[SLI4_RSRC_RPI].size = le16_to_cpu(conf->rpi_count);
4197 
4198 	sli4->ext[SLI4_RSRC_XRI].base[0] = le16_to_cpu(conf->xri_base);
4199 	sli4->ext[SLI4_RSRC_XRI].size = le16_to_cpu(conf->xri_count);
4200 
4201 	sli4->ext[SLI4_RSRC_FCFI].base[0] = 0;
4202 	sli4->ext[SLI4_RSRC_FCFI].size = le16_to_cpu(conf->fcfi_count);
4203 
4204 	for (i = 0; i < SLI4_RSRC_MAX; i++) {
4205 		total = sli4->ext[i].number * sli4->ext[i].size;
4206 		sli4->ext[i].use_map = bitmap_zalloc(total, GFP_KERNEL);
4207 		if (!sli4->ext[i].use_map) {
4208 			efc_log_err(sli4, "bitmap memory allocation failed %d\n",
4209 				    i);
4210 			return -EIO;
4211 		}
4212 		sli4->ext[i].map_size = total;
4213 	}
4214 
4215 	sli4->topology = (le32_to_cpu(conf->topology_dword) &
4216 			  SLI4_READ_CFG_RESP_TOPOLOGY) >> 24;
4217 	switch (sli4->topology) {
4218 	case SLI4_READ_CFG_TOPO_FC:
4219 		efc_log_info(sli4, "FC (unknown)\n");
4220 		break;
4221 	case SLI4_READ_CFG_TOPO_NON_FC_AL:
4222 		efc_log_info(sli4, "FC (direct attach)\n");
4223 		break;
4224 	case SLI4_READ_CFG_TOPO_FC_AL:
4225 		efc_log_info(sli4, "FC (arbitrated loop)\n");
4226 		break;
4227 	default:
4228 		efc_log_info(sli4, "bad topology %#x\n", sli4->topology);
4229 	}
4230 
4231 	sli4->e_d_tov = le16_to_cpu(conf->e_d_tov);
4232 	sli4->r_a_tov = le16_to_cpu(conf->r_a_tov);
4233 
4234 	sli4->link_module_type = le16_to_cpu(conf->lmt);
4235 
4236 	sli4->qinfo.max_qcount[SLI4_QTYPE_EQ] =	le16_to_cpu(conf->eq_count);
4237 	sli4->qinfo.max_qcount[SLI4_QTYPE_CQ] =	le16_to_cpu(conf->cq_count);
4238 	sli4->qinfo.max_qcount[SLI4_QTYPE_WQ] =	le16_to_cpu(conf->wq_count);
4239 	sli4->qinfo.max_qcount[SLI4_QTYPE_RQ] =	le16_to_cpu(conf->rq_count);
4240 
4241 	/*
4242 	 * READ_CONFIG doesn't give the max number of MQ. Applications
4243 	 * will typically want 1, but we may need another at some future
4244 	 * date. Dummy up a "max" MQ count here.
4245 	 */
4246 	sli4->qinfo.max_qcount[SLI4_QTYPE_MQ] = SLI4_USER_MQ_COUNT;
4247 	return 0;
4248 }
4249 
4250 static int
sli_get_sli4_parameters(struct sli4 * sli4)4251 sli_get_sli4_parameters(struct sli4 *sli4)
4252 {
4253 	struct sli4_rsp_cmn_get_sli4_params *parms;
4254 	u32 dw_loopback;
4255 	u32 dw_eq_pg_cnt;
4256 	u32 dw_cq_pg_cnt;
4257 	u32 dw_mq_pg_cnt;
4258 	u32 dw_wq_pg_cnt;
4259 	u32 dw_rq_pg_cnt;
4260 	u32 dw_sgl_pg_cnt;
4261 
4262 	if (sli_cmd_common_get_sli4_parameters(sli4, sli4->bmbx.virt))
4263 		return -EIO;
4264 
4265 	parms = (struct sli4_rsp_cmn_get_sli4_params *)
4266 		 (((u8 *)sli4->bmbx.virt) +
4267 		  offsetof(struct sli4_cmd_sli_config, payload.embed));
4268 
4269 	if (sli_bmbx_command(sli4)) {
4270 		efc_log_crit(sli4, "bootstrap mailbox write fail\n");
4271 		return -EIO;
4272 	}
4273 
4274 	if (parms->hdr.status) {
4275 		efc_log_err(sli4, "COMMON_GET_SLI4_PARAMETERS bad status %#x",
4276 			    parms->hdr.status);
4277 		efc_log_err(sli4, "additional status %#x\n",
4278 			    parms->hdr.additional_status);
4279 		return -EIO;
4280 	}
4281 
4282 	dw_loopback = le32_to_cpu(parms->dw16_loopback_scope);
4283 	dw_eq_pg_cnt = le32_to_cpu(parms->dw6_eq_page_cnt);
4284 	dw_cq_pg_cnt = le32_to_cpu(parms->dw8_cq_page_cnt);
4285 	dw_mq_pg_cnt = le32_to_cpu(parms->dw10_mq_page_cnt);
4286 	dw_wq_pg_cnt = le32_to_cpu(parms->dw12_wq_page_cnt);
4287 	dw_rq_pg_cnt = le32_to_cpu(parms->dw14_rq_page_cnt);
4288 
4289 	sli4->params.auto_reg =	(dw_loopback & SLI4_PARAM_AREG);
4290 	sli4->params.auto_xfer_rdy = (dw_loopback & SLI4_PARAM_AGXF);
4291 	sli4->params.hdr_template_req =	(dw_loopback & SLI4_PARAM_HDRR);
4292 	sli4->params.t10_dif_inline_capable = (dw_loopback & SLI4_PARAM_TIMM);
4293 	sli4->params.t10_dif_separate_capable =	(dw_loopback & SLI4_PARAM_TSMM);
4294 
4295 	sli4->params.mq_create_version = GET_Q_CREATE_VERSION(dw_mq_pg_cnt);
4296 	sli4->params.cq_create_version = GET_Q_CREATE_VERSION(dw_cq_pg_cnt);
4297 
4298 	sli4->rq_min_buf_size =	le16_to_cpu(parms->min_rq_buffer_size);
4299 	sli4->rq_max_buf_size = le32_to_cpu(parms->max_rq_buffer_size);
4300 
4301 	sli4->qinfo.qpage_count[SLI4_QTYPE_EQ] =
4302 		(dw_eq_pg_cnt & SLI4_PARAM_EQ_PAGE_CNT_MASK);
4303 	sli4->qinfo.qpage_count[SLI4_QTYPE_CQ] =
4304 		(dw_cq_pg_cnt & SLI4_PARAM_CQ_PAGE_CNT_MASK);
4305 	sli4->qinfo.qpage_count[SLI4_QTYPE_MQ] =
4306 		(dw_mq_pg_cnt & SLI4_PARAM_MQ_PAGE_CNT_MASK);
4307 	sli4->qinfo.qpage_count[SLI4_QTYPE_WQ] =
4308 		(dw_wq_pg_cnt & SLI4_PARAM_WQ_PAGE_CNT_MASK);
4309 	sli4->qinfo.qpage_count[SLI4_QTYPE_RQ] =
4310 		(dw_rq_pg_cnt & SLI4_PARAM_RQ_PAGE_CNT_MASK);
4311 
4312 	/* save count methods and masks for each queue type */
4313 
4314 	sli4->qinfo.count_mask[SLI4_QTYPE_EQ] =
4315 			le16_to_cpu(parms->eqe_count_mask);
4316 	sli4->qinfo.count_method[SLI4_QTYPE_EQ] =
4317 			GET_Q_CNT_METHOD(dw_eq_pg_cnt);
4318 
4319 	sli4->qinfo.count_mask[SLI4_QTYPE_CQ] =
4320 			le16_to_cpu(parms->cqe_count_mask);
4321 	sli4->qinfo.count_method[SLI4_QTYPE_CQ] =
4322 			GET_Q_CNT_METHOD(dw_cq_pg_cnt);
4323 
4324 	sli4->qinfo.count_mask[SLI4_QTYPE_MQ] =
4325 			le16_to_cpu(parms->mqe_count_mask);
4326 	sli4->qinfo.count_method[SLI4_QTYPE_MQ] =
4327 			GET_Q_CNT_METHOD(dw_mq_pg_cnt);
4328 
4329 	sli4->qinfo.count_mask[SLI4_QTYPE_WQ] =
4330 			le16_to_cpu(parms->wqe_count_mask);
4331 	sli4->qinfo.count_method[SLI4_QTYPE_WQ] =
4332 			GET_Q_CNT_METHOD(dw_wq_pg_cnt);
4333 
4334 	sli4->qinfo.count_mask[SLI4_QTYPE_RQ] =
4335 			le16_to_cpu(parms->rqe_count_mask);
4336 	sli4->qinfo.count_method[SLI4_QTYPE_RQ] =
4337 			GET_Q_CNT_METHOD(dw_rq_pg_cnt);
4338 
4339 	/* now calculate max queue entries */
4340 	sli_calc_max_qentries(sli4);
4341 
4342 	dw_sgl_pg_cnt = le32_to_cpu(parms->dw18_sgl_page_cnt);
4343 
4344 	/* max # of pages */
4345 	sli4->max_sgl_pages = (dw_sgl_pg_cnt & SLI4_PARAM_SGL_PAGE_CNT_MASK);
4346 
4347 	/* bit map of available sizes */
4348 	sli4->sgl_page_sizes = (dw_sgl_pg_cnt &
4349 				SLI4_PARAM_SGL_PAGE_SZS_MASK) >> 8;
4350 	/* ignore HLM here. Use value from REQUEST_FEATURES */
4351 	sli4->sge_supported_length = le32_to_cpu(parms->sge_supported_length);
4352 	sli4->params.sgl_pre_reg_required = (dw_loopback & SLI4_PARAM_SGLR);
4353 	/* default to using pre-registered SGL's */
4354 	sli4->params.sgl_pre_registered = true;
4355 
4356 	sli4->params.perf_hint = dw_loopback & SLI4_PARAM_PHON;
4357 	sli4->params.perf_wq_id_association = (dw_loopback & SLI4_PARAM_PHWQ);
4358 
4359 	sli4->rq_batch = (le16_to_cpu(parms->dw15w1_rq_db_window) &
4360 			  SLI4_PARAM_RQ_DB_WINDOW_MASK) >> 12;
4361 
4362 	/* Use the highest available WQE size. */
4363 	if (((dw_wq_pg_cnt & SLI4_PARAM_WQE_SZS_MASK) >> 8) &
4364 	    SLI4_128BYTE_WQE_SUPPORT)
4365 		sli4->wqe_size = SLI4_WQE_EXT_BYTES;
4366 	else
4367 		sli4->wqe_size = SLI4_WQE_BYTES;
4368 
4369 	return 0;
4370 }
4371 
4372 static int
sli_get_ctrl_attributes(struct sli4 * sli4)4373 sli_get_ctrl_attributes(struct sli4 *sli4)
4374 {
4375 	struct sli4_rsp_cmn_get_cntl_attributes *attr;
4376 	struct sli4_rsp_cmn_get_cntl_addl_attributes *add_attr;
4377 	struct efc_dma data;
4378 	u32 psize;
4379 
4380 	/*
4381 	 * Issue COMMON_GET_CNTL_ATTRIBUTES to get port_number. Temporarily
4382 	 * uses VPD DMA buffer as the response won't fit in the embedded
4383 	 * buffer.
4384 	 */
4385 	memset(sli4->vpd_data.virt, 0, sli4->vpd_data.size);
4386 	if (sli_cmd_common_get_cntl_attributes(sli4, sli4->bmbx.virt,
4387 					       &sli4->vpd_data)) {
4388 		efc_log_err(sli4, "bad COMMON_GET_CNTL_ATTRIBUTES write\n");
4389 		return -EIO;
4390 	}
4391 
4392 	attr =	sli4->vpd_data.virt;
4393 
4394 	if (sli_bmbx_command(sli4)) {
4395 		efc_log_crit(sli4, "bootstrap mailbox write fail\n");
4396 		return -EIO;
4397 	}
4398 
4399 	if (attr->hdr.status) {
4400 		efc_log_err(sli4, "COMMON_GET_CNTL_ATTRIBUTES bad status %#x",
4401 			    attr->hdr.status);
4402 		efc_log_err(sli4, "additional status %#x\n",
4403 			    attr->hdr.additional_status);
4404 		return -EIO;
4405 	}
4406 
4407 	sli4->port_number = attr->port_num_type_flags & SLI4_CNTL_ATTR_PORTNUM;
4408 
4409 	memcpy(sli4->bios_version_string, attr->bios_version_str,
4410 	       sizeof(sli4->bios_version_string));
4411 
4412 	/* get additional attributes */
4413 	psize = sizeof(struct sli4_rsp_cmn_get_cntl_addl_attributes);
4414 	data.size = psize;
4415 	data.virt = dma_alloc_coherent(&sli4->pci->dev, data.size,
4416 				       &data.phys, GFP_KERNEL);
4417 	if (!data.virt) {
4418 		memset(&data, 0, sizeof(struct efc_dma));
4419 		efc_log_err(sli4, "Failed to allocate memory for GET_CNTL_ADDL_ATTR\n");
4420 		return -EIO;
4421 	}
4422 
4423 	if (sli_cmd_common_get_cntl_addl_attributes(sli4, sli4->bmbx.virt,
4424 						    &data)) {
4425 		efc_log_err(sli4, "bad GET_CNTL_ADDL_ATTR write\n");
4426 		dma_free_coherent(&sli4->pci->dev, data.size,
4427 				  data.virt, data.phys);
4428 		return -EIO;
4429 	}
4430 
4431 	if (sli_bmbx_command(sli4)) {
4432 		efc_log_crit(sli4, "mailbox fail (GET_CNTL_ADDL_ATTR)\n");
4433 		dma_free_coherent(&sli4->pci->dev, data.size,
4434 				  data.virt, data.phys);
4435 		return -EIO;
4436 	}
4437 
4438 	add_attr = data.virt;
4439 	if (add_attr->hdr.status) {
4440 		efc_log_err(sli4, "GET_CNTL_ADDL_ATTR bad status %#x\n",
4441 			    add_attr->hdr.status);
4442 		dma_free_coherent(&sli4->pci->dev, data.size,
4443 				  data.virt, data.phys);
4444 		return -EIO;
4445 	}
4446 
4447 	memcpy(sli4->ipl_name, add_attr->ipl_file_name, sizeof(sli4->ipl_name));
4448 
4449 	efc_log_info(sli4, "IPL:%s\n", (char *)sli4->ipl_name);
4450 
4451 	dma_free_coherent(&sli4->pci->dev, data.size, data.virt,
4452 			  data.phys);
4453 	memset(&data, 0, sizeof(struct efc_dma));
4454 	return 0;
4455 }
4456 
4457 static int
sli_get_fw_rev(struct sli4 * sli4)4458 sli_get_fw_rev(struct sli4 *sli4)
4459 {
4460 	struct sli4_cmd_read_rev	*read_rev = sli4->bmbx.virt;
4461 
4462 	if (sli_cmd_read_rev(sli4, sli4->bmbx.virt, &sli4->vpd_data))
4463 		return -EIO;
4464 
4465 	if (sli_bmbx_command(sli4)) {
4466 		efc_log_crit(sli4, "bootstrap mailbox write fail (READ_REV)\n");
4467 		return -EIO;
4468 	}
4469 
4470 	if (le16_to_cpu(read_rev->hdr.status)) {
4471 		efc_log_err(sli4, "READ_REV bad status %#x\n",
4472 			    le16_to_cpu(read_rev->hdr.status));
4473 		return -EIO;
4474 	}
4475 
4476 	sli4->fw_rev[0] = le32_to_cpu(read_rev->first_fw_id);
4477 	memcpy(sli4->fw_name[0], read_rev->first_fw_name,
4478 	       sizeof(sli4->fw_name[0]));
4479 
4480 	sli4->fw_rev[1] = le32_to_cpu(read_rev->second_fw_id);
4481 	memcpy(sli4->fw_name[1], read_rev->second_fw_name,
4482 	       sizeof(sli4->fw_name[1]));
4483 
4484 	sli4->hw_rev[0] = le32_to_cpu(read_rev->first_hw_rev);
4485 	sli4->hw_rev[1] = le32_to_cpu(read_rev->second_hw_rev);
4486 	sli4->hw_rev[2] = le32_to_cpu(read_rev->third_hw_rev);
4487 
4488 	efc_log_info(sli4, "FW1:%s (%08x) / FW2:%s (%08x)\n",
4489 		     read_rev->first_fw_name, le32_to_cpu(read_rev->first_fw_id),
4490 		     read_rev->second_fw_name, le32_to_cpu(read_rev->second_fw_id));
4491 
4492 	efc_log_info(sli4, "HW1: %08x / HW2: %08x\n",
4493 		     le32_to_cpu(read_rev->first_hw_rev),
4494 		     le32_to_cpu(read_rev->second_hw_rev));
4495 
4496 	/* Check that all VPD data was returned */
4497 	if (le32_to_cpu(read_rev->returned_vpd_length) !=
4498 	    le32_to_cpu(read_rev->actual_vpd_length)) {
4499 		efc_log_info(sli4, "VPD length: avail=%d return=%d actual=%d\n",
4500 			     le32_to_cpu(read_rev->available_length_dword) &
4501 				    SLI4_READ_REV_AVAILABLE_LENGTH,
4502 			     le32_to_cpu(read_rev->returned_vpd_length),
4503 			     le32_to_cpu(read_rev->actual_vpd_length));
4504 	}
4505 	sli4->vpd_length = le32_to_cpu(read_rev->returned_vpd_length);
4506 	return 0;
4507 }
4508 
4509 static int
sli_get_config(struct sli4 * sli4)4510 sli_get_config(struct sli4 *sli4)
4511 {
4512 	struct sli4_rsp_cmn_get_port_name *port_name;
4513 	struct sli4_cmd_read_nvparms *read_nvparms;
4514 
4515 	/*
4516 	 * Read the device configuration
4517 	 */
4518 	if (sli_get_read_config(sli4))
4519 		return -EIO;
4520 
4521 	if (sli_get_sli4_parameters(sli4))
4522 		return -EIO;
4523 
4524 	if (sli_get_ctrl_attributes(sli4))
4525 		return -EIO;
4526 
4527 	if (sli_cmd_common_get_port_name(sli4, sli4->bmbx.virt))
4528 		return -EIO;
4529 
4530 	port_name = (struct sli4_rsp_cmn_get_port_name *)
4531 		    (((u8 *)sli4->bmbx.virt) +
4532 		    offsetof(struct sli4_cmd_sli_config, payload.embed));
4533 
4534 	if (sli_bmbx_command(sli4)) {
4535 		efc_log_crit(sli4, "bootstrap mailbox fail (GET_PORT_NAME)\n");
4536 		return -EIO;
4537 	}
4538 
4539 	sli4->port_name[0] = port_name->port_name[sli4->port_number];
4540 	sli4->port_name[1] = '\0';
4541 
4542 	if (sli_get_fw_rev(sli4))
4543 		return -EIO;
4544 
4545 	if (sli_cmd_read_nvparms(sli4, sli4->bmbx.virt)) {
4546 		efc_log_err(sli4, "bad READ_NVPARMS write\n");
4547 		return -EIO;
4548 	}
4549 
4550 	if (sli_bmbx_command(sli4)) {
4551 		efc_log_crit(sli4, "bootstrap mailbox fail (READ_NVPARMS)\n");
4552 		return -EIO;
4553 	}
4554 
4555 	read_nvparms = sli4->bmbx.virt;
4556 	if (le16_to_cpu(read_nvparms->hdr.status)) {
4557 		efc_log_err(sli4, "READ_NVPARMS bad status %#x\n",
4558 			    le16_to_cpu(read_nvparms->hdr.status));
4559 		return -EIO;
4560 	}
4561 
4562 	memcpy(sli4->wwpn, read_nvparms->wwpn, sizeof(sli4->wwpn));
4563 	memcpy(sli4->wwnn, read_nvparms->wwnn, sizeof(sli4->wwnn));
4564 
4565 	efc_log_info(sli4, "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x\n",
4566 		     sli4->wwpn[0], sli4->wwpn[1], sli4->wwpn[2], sli4->wwpn[3],
4567 		     sli4->wwpn[4], sli4->wwpn[5], sli4->wwpn[6], sli4->wwpn[7]);
4568 	efc_log_info(sli4, "WWNN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x\n",
4569 		     sli4->wwnn[0], sli4->wwnn[1], sli4->wwnn[2], sli4->wwnn[3],
4570 		     sli4->wwnn[4], sli4->wwnn[5], sli4->wwnn[6], sli4->wwnn[7]);
4571 
4572 	return 0;
4573 }
4574 
4575 int
sli_setup(struct sli4 * sli4,void * os,struct pci_dev * pdev,void __iomem * reg[])4576 sli_setup(struct sli4 *sli4, void *os, struct pci_dev  *pdev,
4577 	  void __iomem *reg[])
4578 {
4579 	u32 intf = U32_MAX;
4580 	u32 pci_class_rev = 0;
4581 	u32 rev_id = 0;
4582 	u32 family = 0;
4583 	u32 asic_id = 0;
4584 	u32 i;
4585 	struct sli4_asic_entry_t *asic;
4586 
4587 	memset(sli4, 0, sizeof(struct sli4));
4588 
4589 	sli4->os = os;
4590 	sli4->pci = pdev;
4591 
4592 	for (i = 0; i < 6; i++)
4593 		sli4->reg[i] = reg[i];
4594 	/*
4595 	 * Read the SLI_INTF register to discover the register layout
4596 	 * and other capability information
4597 	 */
4598 	if (pci_read_config_dword(pdev, SLI4_INTF_REG, &intf))
4599 		return -EIO;
4600 
4601 	if ((intf & SLI4_INTF_VALID_MASK) != (u32)SLI4_INTF_VALID_VALUE) {
4602 		efc_log_err(sli4, "SLI_INTF is not valid\n");
4603 		return -EIO;
4604 	}
4605 
4606 	/* driver only support SLI-4 */
4607 	if ((intf & SLI4_INTF_REV_MASK) != SLI4_INTF_REV_S4) {
4608 		efc_log_err(sli4, "Unsupported SLI revision (intf=%#x)\n", intf);
4609 		return -EIO;
4610 	}
4611 
4612 	sli4->sli_family = intf & SLI4_INTF_FAMILY_MASK;
4613 
4614 	sli4->if_type = intf & SLI4_INTF_IF_TYPE_MASK;
4615 	efc_log_info(sli4, "status=%#x error1=%#x error2=%#x\n",
4616 		     sli_reg_read_status(sli4),
4617 		     sli_reg_read_err1(sli4),
4618 		     sli_reg_read_err2(sli4));
4619 
4620 	/*
4621 	 * set the ASIC type and revision
4622 	 */
4623 	if (pci_read_config_dword(pdev, PCI_CLASS_REVISION, &pci_class_rev))
4624 		return -EIO;
4625 
4626 	rev_id = pci_class_rev & 0xff;
4627 	family = sli4->sli_family;
4628 	if (family == SLI4_FAMILY_CHECK_ASIC_TYPE) {
4629 		if (!pci_read_config_dword(pdev, SLI4_ASIC_ID_REG, &asic_id))
4630 			family = asic_id & SLI4_ASIC_GEN_MASK;
4631 	}
4632 
4633 	for (i = 0, asic = sli4_asic_table; i < ARRAY_SIZE(sli4_asic_table);
4634 	     i++, asic++) {
4635 		if (rev_id == asic->rev_id && family == asic->family) {
4636 			sli4->asic_type = family;
4637 			sli4->asic_rev = rev_id;
4638 			break;
4639 		}
4640 	}
4641 	/* Fail if no matching asic type/rev was found */
4642 	if (!sli4->asic_type) {
4643 		efc_log_err(sli4, "no matching asic family/rev found: %02x/%02x\n",
4644 			    family, rev_id);
4645 		return -EIO;
4646 	}
4647 
4648 	/*
4649 	 * The bootstrap mailbox is equivalent to a MQ with a single 256 byte
4650 	 * entry, a CQ with a single 16 byte entry, and no event queue.
4651 	 * Alignment must be 16 bytes as the low order address bits in the
4652 	 * address register are also control / status.
4653 	 */
4654 	sli4->bmbx.size = SLI4_BMBX_SIZE + sizeof(struct sli4_mcqe);
4655 	sli4->bmbx.virt = dma_alloc_coherent(&pdev->dev, sli4->bmbx.size,
4656 					     &sli4->bmbx.phys, GFP_KERNEL);
4657 	if (!sli4->bmbx.virt) {
4658 		memset(&sli4->bmbx, 0, sizeof(struct efc_dma));
4659 		efc_log_err(sli4, "bootstrap mailbox allocation failed\n");
4660 		return -EIO;
4661 	}
4662 
4663 	if (sli4->bmbx.phys & SLI4_BMBX_MASK_LO) {
4664 		efc_log_err(sli4, "bad alignment for bootstrap mailbox\n");
4665 		return -EIO;
4666 	}
4667 
4668 	efc_log_info(sli4, "bmbx v=%p p=0x%x %08x s=%zd\n", sli4->bmbx.virt,
4669 		     upper_32_bits(sli4->bmbx.phys),
4670 		     lower_32_bits(sli4->bmbx.phys), sli4->bmbx.size);
4671 
4672 	/* 4096 is arbitrary. What should this value actually be? */
4673 	sli4->vpd_data.size = 4096;
4674 	sli4->vpd_data.virt = dma_alloc_coherent(&pdev->dev,
4675 						 sli4->vpd_data.size,
4676 						 &sli4->vpd_data.phys,
4677 						 GFP_KERNEL);
4678 	if (!sli4->vpd_data.virt) {
4679 		memset(&sli4->vpd_data, 0, sizeof(struct efc_dma));
4680 		/* Note that failure isn't fatal in this specific case */
4681 		efc_log_info(sli4, "VPD buffer allocation failed\n");
4682 	}
4683 
4684 	if (!sli_fw_init(sli4)) {
4685 		efc_log_err(sli4, "FW initialization failed\n");
4686 		return -EIO;
4687 	}
4688 
4689 	/*
4690 	 * Set one of fcpi(initiator), fcpt(target), fcpc(combined) to true
4691 	 * in addition to any other desired features
4692 	 */
4693 	sli4->features = (SLI4_REQFEAT_IAAB | SLI4_REQFEAT_NPIV |
4694 				 SLI4_REQFEAT_DIF | SLI4_REQFEAT_VF |
4695 				 SLI4_REQFEAT_FCPC | SLI4_REQFEAT_IAAR |
4696 				 SLI4_REQFEAT_HLM | SLI4_REQFEAT_PERFH |
4697 				 SLI4_REQFEAT_RXSEQ | SLI4_REQFEAT_RXRI |
4698 				 SLI4_REQFEAT_MRQP);
4699 
4700 	/* use performance hints if available */
4701 	if (sli4->params.perf_hint)
4702 		sli4->features |= SLI4_REQFEAT_PERFH;
4703 
4704 	if (sli_request_features(sli4, &sli4->features, true))
4705 		return -EIO;
4706 
4707 	if (sli_get_config(sli4))
4708 		return -EIO;
4709 
4710 	return 0;
4711 }
4712 
4713 int
sli_init(struct sli4 * sli4)4714 sli_init(struct sli4 *sli4)
4715 {
4716 	if (sli4->params.has_extents) {
4717 		efc_log_info(sli4, "extend allocation not supported\n");
4718 		return -EIO;
4719 	}
4720 
4721 	sli4->features &= (~SLI4_REQFEAT_HLM);
4722 	sli4->features &= (~SLI4_REQFEAT_RXSEQ);
4723 	sli4->features &= (~SLI4_REQFEAT_RXRI);
4724 
4725 	if (sli_request_features(sli4, &sli4->features, false))
4726 		return -EIO;
4727 
4728 	return 0;
4729 }
4730 
4731 int
sli_reset(struct sli4 * sli4)4732 sli_reset(struct sli4 *sli4)
4733 {
4734 	u32	i;
4735 
4736 	if (!sli_fw_init(sli4)) {
4737 		efc_log_crit(sli4, "FW initialization failed\n");
4738 		return -EIO;
4739 	}
4740 
4741 	kfree(sli4->ext[0].base);
4742 	sli4->ext[0].base = NULL;
4743 
4744 	for (i = 0; i < SLI4_RSRC_MAX; i++) {
4745 		bitmap_free(sli4->ext[i].use_map);
4746 		sli4->ext[i].use_map = NULL;
4747 		sli4->ext[i].base = NULL;
4748 	}
4749 
4750 	return sli_get_config(sli4);
4751 }
4752 
4753 int
sli_fw_reset(struct sli4 * sli4)4754 sli_fw_reset(struct sli4 *sli4)
4755 {
4756 	/*
4757 	 * Firmware must be ready before issuing the reset.
4758 	 */
4759 	if (!sli_wait_for_fw_ready(sli4, SLI4_FW_READY_TIMEOUT_MSEC)) {
4760 		efc_log_crit(sli4, "FW status is NOT ready\n");
4761 		return -EIO;
4762 	}
4763 
4764 	/* Lancer uses PHYDEV_CONTROL */
4765 	writel(SLI4_PHYDEV_CTRL_FRST, (sli4->reg[0] + SLI4_PHYDEV_CTRL_REG));
4766 
4767 	/* wait for the FW to become ready after the reset */
4768 	if (!sli_wait_for_fw_ready(sli4, SLI4_FW_READY_TIMEOUT_MSEC)) {
4769 		efc_log_crit(sli4, "Failed to be ready after firmware reset\n");
4770 		return -EIO;
4771 	}
4772 	return 0;
4773 }
4774 
4775 void
sli_teardown(struct sli4 * sli4)4776 sli_teardown(struct sli4 *sli4)
4777 {
4778 	u32 i;
4779 
4780 	kfree(sli4->ext[0].base);
4781 	sli4->ext[0].base = NULL;
4782 
4783 	for (i = 0; i < SLI4_RSRC_MAX; i++) {
4784 		sli4->ext[i].base = NULL;
4785 
4786 		bitmap_free(sli4->ext[i].use_map);
4787 		sli4->ext[i].use_map = NULL;
4788 	}
4789 
4790 	if (!sli_sliport_reset(sli4))
4791 		efc_log_err(sli4, "FW deinitialization failed\n");
4792 
4793 	dma_free_coherent(&sli4->pci->dev, sli4->vpd_data.size,
4794 			  sli4->vpd_data.virt, sli4->vpd_data.phys);
4795 	memset(&sli4->vpd_data, 0, sizeof(struct efc_dma));
4796 
4797 	dma_free_coherent(&sli4->pci->dev, sli4->bmbx.size,
4798 			  sli4->bmbx.virt, sli4->bmbx.phys);
4799 	memset(&sli4->bmbx, 0, sizeof(struct efc_dma));
4800 }
4801 
4802 int
sli_callback(struct sli4 * sli4,enum sli4_callback which,void * func,void * arg)4803 sli_callback(struct sli4 *sli4, enum sli4_callback which,
4804 	     void *func, void *arg)
4805 {
4806 	if (!func) {
4807 		efc_log_err(sli4, "bad parameter sli4=%p which=%#x func=%p\n",
4808 			    sli4, which, func);
4809 		return -EIO;
4810 	}
4811 
4812 	switch (which) {
4813 	case SLI4_CB_LINK:
4814 		sli4->link = func;
4815 		sli4->link_arg = arg;
4816 		break;
4817 	default:
4818 		efc_log_info(sli4, "unknown callback %#x\n", which);
4819 		return -EIO;
4820 	}
4821 
4822 	return 0;
4823 }
4824 
4825 int
sli_eq_modify_delay(struct sli4 * sli4,struct sli4_queue * eq,u32 num_eq,u32 shift,u32 delay_mult)4826 sli_eq_modify_delay(struct sli4 *sli4, struct sli4_queue *eq,
4827 		    u32 num_eq, u32 shift, u32 delay_mult)
4828 {
4829 	sli_cmd_common_modify_eq_delay(sli4, sli4->bmbx.virt, eq, num_eq,
4830 				       shift, delay_mult);
4831 
4832 	if (sli_bmbx_command(sli4)) {
4833 		efc_log_crit(sli4, "bootstrap mailbox write fail (MODIFY EQ DELAY)\n");
4834 		return -EIO;
4835 	}
4836 	if (sli_res_sli_config(sli4, sli4->bmbx.virt)) {
4837 		efc_log_err(sli4, "bad status MODIFY EQ DELAY\n");
4838 		return -EIO;
4839 	}
4840 
4841 	return 0;
4842 }
4843 
4844 int
sli_resource_alloc(struct sli4 * sli4,enum sli4_resource rtype,u32 * rid,u32 * index)4845 sli_resource_alloc(struct sli4 *sli4, enum sli4_resource rtype,
4846 		   u32 *rid, u32 *index)
4847 {
4848 	int rc = 0;
4849 	u32 size;
4850 	u32 ext_idx;
4851 	u32 item_idx;
4852 	u32 position;
4853 
4854 	*rid = U32_MAX;
4855 	*index = U32_MAX;
4856 
4857 	switch (rtype) {
4858 	case SLI4_RSRC_VFI:
4859 	case SLI4_RSRC_VPI:
4860 	case SLI4_RSRC_RPI:
4861 	case SLI4_RSRC_XRI:
4862 		position =
4863 		find_first_zero_bit(sli4->ext[rtype].use_map,
4864 				    sli4->ext[rtype].map_size);
4865 		if (position >= sli4->ext[rtype].map_size) {
4866 			efc_log_err(sli4, "out of resource %d (alloc=%d)\n",
4867 				    rtype, sli4->ext[rtype].n_alloc);
4868 			rc = -EIO;
4869 			break;
4870 		}
4871 		set_bit(position, sli4->ext[rtype].use_map);
4872 		*index = position;
4873 
4874 		size = sli4->ext[rtype].size;
4875 
4876 		ext_idx = *index / size;
4877 		item_idx   = *index % size;
4878 
4879 		*rid = sli4->ext[rtype].base[ext_idx] + item_idx;
4880 
4881 		sli4->ext[rtype].n_alloc++;
4882 		break;
4883 	default:
4884 		rc = -EIO;
4885 	}
4886 
4887 	return rc;
4888 }
4889 
4890 int
sli_resource_free(struct sli4 * sli4,enum sli4_resource rtype,u32 rid)4891 sli_resource_free(struct sli4 *sli4, enum sli4_resource rtype, u32 rid)
4892 {
4893 	int rc = -EIO;
4894 	u32 x;
4895 	u32 size, *base;
4896 
4897 	switch (rtype) {
4898 	case SLI4_RSRC_VFI:
4899 	case SLI4_RSRC_VPI:
4900 	case SLI4_RSRC_RPI:
4901 	case SLI4_RSRC_XRI:
4902 		/*
4903 		 * Figure out which extent contains the resource ID. I.e. find
4904 		 * the extent such that
4905 		 *   extent->base <= resource ID < extent->base + extent->size
4906 		 */
4907 		base = sli4->ext[rtype].base;
4908 		size = sli4->ext[rtype].size;
4909 
4910 		/*
4911 		 * In the case of FW reset, this may be cleared
4912 		 * but the force_free path will still attempt to
4913 		 * free the resource. Prevent a NULL pointer access.
4914 		 */
4915 		if (!base)
4916 			break;
4917 
4918 		for (x = 0; x < sli4->ext[rtype].number; x++) {
4919 			if ((rid < base[x] || (rid >= (base[x] + size))))
4920 				continue;
4921 
4922 			rid -= base[x];
4923 			clear_bit((x * size) + rid, sli4->ext[rtype].use_map);
4924 			rc = 0;
4925 			break;
4926 		}
4927 		break;
4928 	default:
4929 		break;
4930 	}
4931 
4932 	return rc;
4933 }
4934 
4935 int
sli_resource_reset(struct sli4 * sli4,enum sli4_resource rtype)4936 sli_resource_reset(struct sli4 *sli4, enum sli4_resource rtype)
4937 {
4938 	int rc = -EIO;
4939 	u32 i;
4940 
4941 	switch (rtype) {
4942 	case SLI4_RSRC_VFI:
4943 	case SLI4_RSRC_VPI:
4944 	case SLI4_RSRC_RPI:
4945 	case SLI4_RSRC_XRI:
4946 		for (i = 0; i < sli4->ext[rtype].map_size; i++)
4947 			clear_bit(i, sli4->ext[rtype].use_map);
4948 		rc = 0;
4949 		break;
4950 	default:
4951 		break;
4952 	}
4953 
4954 	return rc;
4955 }
4956 
sli_raise_ue(struct sli4 * sli4,u8 dump)4957 int sli_raise_ue(struct sli4 *sli4, u8 dump)
4958 {
4959 	u32 val = 0;
4960 
4961 	if (dump == SLI4_FUNC_DESC_DUMP) {
4962 		val = SLI4_PORT_CTRL_FDD | SLI4_PORT_CTRL_IP;
4963 		writel(val, (sli4->reg[0] + SLI4_PORT_CTRL_REG));
4964 	} else {
4965 		val = SLI4_PHYDEV_CTRL_FRST;
4966 
4967 		if (dump == SLI4_CHIP_LEVEL_DUMP)
4968 			val |= SLI4_PHYDEV_CTRL_DD;
4969 		writel(val, (sli4->reg[0] + SLI4_PHYDEV_CTRL_REG));
4970 	}
4971 
4972 	return 0;
4973 }
4974 
sli_dump_is_ready(struct sli4 * sli4)4975 int sli_dump_is_ready(struct sli4 *sli4)
4976 {
4977 	int rc = SLI4_DUMP_READY_STATUS_NOT_READY;
4978 	u32 port_val;
4979 	u32 bmbx_val;
4980 
4981 	/*
4982 	 * Ensure that the port is ready AND the mailbox is
4983 	 * ready before signaling that the dump is ready to go.
4984 	 */
4985 	port_val = sli_reg_read_status(sli4);
4986 	bmbx_val = readl(sli4->reg[0] + SLI4_BMBX_REG);
4987 
4988 	if ((bmbx_val & SLI4_BMBX_RDY) &&
4989 	    (port_val & SLI4_PORT_STATUS_RDY)) {
4990 		if (port_val & SLI4_PORT_STATUS_DIP)
4991 			rc = SLI4_DUMP_READY_STATUS_DD_PRESENT;
4992 		else if (port_val & SLI4_PORT_STATUS_FDP)
4993 			rc = SLI4_DUMP_READY_STATUS_FDB_PRESENT;
4994 	}
4995 
4996 	return rc;
4997 }
4998 
sli_reset_required(struct sli4 * sli4)4999 bool sli_reset_required(struct sli4 *sli4)
5000 {
5001 	u32 val;
5002 
5003 	val = sli_reg_read_status(sli4);
5004 	return (val & SLI4_PORT_STATUS_RN);
5005 }
5006 
5007 int
sli_cmd_post_sgl_pages(struct sli4 * sli4,void * buf,u16 xri,u32 xri_count,struct efc_dma * page0[],struct efc_dma * page1[],struct efc_dma * dma)5008 sli_cmd_post_sgl_pages(struct sli4 *sli4, void *buf, u16 xri,
5009 		       u32 xri_count, struct efc_dma *page0[],
5010 		       struct efc_dma *page1[], struct efc_dma *dma)
5011 {
5012 	struct sli4_rqst_post_sgl_pages *post = NULL;
5013 	u32 i;
5014 	__le32 req_len;
5015 
5016 	post = sli_config_cmd_init(sli4, buf,
5017 				   SLI4_CFG_PYLD_LENGTH(post_sgl_pages), dma);
5018 	if (!post)
5019 		return -EIO;
5020 
5021 	/* payload size calculation */
5022 	/* 4 = xri_start + xri_count */
5023 	/* xri_count = # of XRI's registered */
5024 	/* sizeof(uint64_t) = physical address size */
5025 	/* 2 = # of physical addresses per page set */
5026 	req_len = cpu_to_le32(4 + (xri_count * (sizeof(uint64_t) * 2)));
5027 	sli_cmd_fill_hdr(&post->hdr, SLI4_OPC_POST_SGL_PAGES, SLI4_SUBSYSTEM_FC,
5028 			 CMD_V0, req_len);
5029 	post->xri_start = cpu_to_le16(xri);
5030 	post->xri_count = cpu_to_le16(xri_count);
5031 
5032 	for (i = 0; i < xri_count; i++) {
5033 		post->page_set[i].page0_low  =
5034 				cpu_to_le32(lower_32_bits(page0[i]->phys));
5035 		post->page_set[i].page0_high =
5036 				cpu_to_le32(upper_32_bits(page0[i]->phys));
5037 	}
5038 
5039 	if (page1) {
5040 		for (i = 0; i < xri_count; i++) {
5041 			post->page_set[i].page1_low =
5042 				cpu_to_le32(lower_32_bits(page1[i]->phys));
5043 			post->page_set[i].page1_high =
5044 				cpu_to_le32(upper_32_bits(page1[i]->phys));
5045 		}
5046 	}
5047 
5048 	return 0;
5049 }
5050 
5051 int
sli_cmd_post_hdr_templates(struct sli4 * sli4,void * buf,struct efc_dma * dma,u16 rpi,struct efc_dma * payload_dma)5052 sli_cmd_post_hdr_templates(struct sli4 *sli4, void *buf, struct efc_dma *dma,
5053 			   u16 rpi, struct efc_dma *payload_dma)
5054 {
5055 	struct sli4_rqst_post_hdr_templates *req = NULL;
5056 	uintptr_t phys = 0;
5057 	u32 i = 0;
5058 	u32 page_count, payload_size;
5059 
5060 	page_count = sli_page_count(dma->size, SLI_PAGE_SIZE);
5061 
5062 	payload_size = ((sizeof(struct sli4_rqst_post_hdr_templates) +
5063 		(page_count * SZ_DMAADDR)) - sizeof(struct sli4_rqst_hdr));
5064 
5065 	if (page_count > 16) {
5066 		/*
5067 		 * We can't fit more than 16 descriptors into an embedded mbox
5068 		 * command, it has to be non-embedded
5069 		 */
5070 		payload_dma->size = payload_size;
5071 		payload_dma->virt = dma_alloc_coherent(&sli4->pci->dev,
5072 						       payload_dma->size,
5073 					     &payload_dma->phys, GFP_KERNEL);
5074 		if (!payload_dma->virt) {
5075 			memset(payload_dma, 0, sizeof(struct efc_dma));
5076 			efc_log_err(sli4, "mbox payload memory allocation fail\n");
5077 			return -EIO;
5078 		}
5079 		req = sli_config_cmd_init(sli4, buf, payload_size, payload_dma);
5080 	} else {
5081 		req = sli_config_cmd_init(sli4, buf, payload_size, NULL);
5082 	}
5083 
5084 	if (!req)
5085 		return -EIO;
5086 
5087 	if (rpi == U16_MAX)
5088 		rpi = sli4->ext[SLI4_RSRC_RPI].base[0];
5089 
5090 	sli_cmd_fill_hdr(&req->hdr, SLI4_OPC_POST_HDR_TEMPLATES,
5091 			 SLI4_SUBSYSTEM_FC, CMD_V0,
5092 			 SLI4_RQST_PYLD_LEN(post_hdr_templates));
5093 
5094 	req->rpi_offset = cpu_to_le16(rpi);
5095 	req->page_count = cpu_to_le16(page_count);
5096 	phys = dma->phys;
5097 	for (i = 0; i < page_count; i++) {
5098 		req->page_descriptor[i].low  = cpu_to_le32(lower_32_bits(phys));
5099 		req->page_descriptor[i].high = cpu_to_le32(upper_32_bits(phys));
5100 
5101 		phys += SLI_PAGE_SIZE;
5102 	}
5103 
5104 	return 0;
5105 }
5106 
5107 u32
sli_fc_get_rpi_requirements(struct sli4 * sli4,u32 n_rpi)5108 sli_fc_get_rpi_requirements(struct sli4 *sli4, u32 n_rpi)
5109 {
5110 	u32 bytes = 0;
5111 
5112 	/* Check if header templates needed */
5113 	if (sli4->params.hdr_template_req)
5114 		/* round up to a page */
5115 		bytes = round_up(n_rpi * SLI4_HDR_TEMPLATE_SIZE, SLI_PAGE_SIZE);
5116 
5117 	return bytes;
5118 }
5119 
5120 const char *
sli_fc_get_status_string(u32 status)5121 sli_fc_get_status_string(u32 status)
5122 {
5123 	static struct {
5124 		u32 code;
5125 		const char *label;
5126 	} lookup[] = {
5127 		{SLI4_FC_WCQE_STATUS_SUCCESS,		"SUCCESS"},
5128 		{SLI4_FC_WCQE_STATUS_FCP_RSP_FAILURE,	"FCP_RSP_FAILURE"},
5129 		{SLI4_FC_WCQE_STATUS_REMOTE_STOP,	"REMOTE_STOP"},
5130 		{SLI4_FC_WCQE_STATUS_LOCAL_REJECT,	"LOCAL_REJECT"},
5131 		{SLI4_FC_WCQE_STATUS_NPORT_RJT,		"NPORT_RJT"},
5132 		{SLI4_FC_WCQE_STATUS_FABRIC_RJT,	"FABRIC_RJT"},
5133 		{SLI4_FC_WCQE_STATUS_NPORT_BSY,		"NPORT_BSY"},
5134 		{SLI4_FC_WCQE_STATUS_FABRIC_BSY,	"FABRIC_BSY"},
5135 		{SLI4_FC_WCQE_STATUS_LS_RJT,		"LS_RJT"},
5136 		{SLI4_FC_WCQE_STATUS_CMD_REJECT,	"CMD_REJECT"},
5137 		{SLI4_FC_WCQE_STATUS_FCP_TGT_LENCHECK,	"FCP_TGT_LENCHECK"},
5138 		{SLI4_FC_WCQE_STATUS_RQ_BUF_LEN_EXCEEDED, "BUF_LEN_EXCEEDED"},
5139 		{SLI4_FC_WCQE_STATUS_RQ_INSUFF_BUF_NEEDED,
5140 				"RQ_INSUFF_BUF_NEEDED"},
5141 		{SLI4_FC_WCQE_STATUS_RQ_INSUFF_FRM_DISC, "RQ_INSUFF_FRM_DESC"},
5142 		{SLI4_FC_WCQE_STATUS_RQ_DMA_FAILURE,	"RQ_DMA_FAILURE"},
5143 		{SLI4_FC_WCQE_STATUS_FCP_RSP_TRUNCATE,	"FCP_RSP_TRUNCATE"},
5144 		{SLI4_FC_WCQE_STATUS_DI_ERROR,		"DI_ERROR"},
5145 		{SLI4_FC_WCQE_STATUS_BA_RJT,		"BA_RJT"},
5146 		{SLI4_FC_WCQE_STATUS_RQ_INSUFF_XRI_NEEDED,
5147 				"RQ_INSUFF_XRI_NEEDED"},
5148 		{SLI4_FC_WCQE_STATUS_RQ_INSUFF_XRI_DISC, "INSUFF_XRI_DISC"},
5149 		{SLI4_FC_WCQE_STATUS_RX_ERROR_DETECT,	"RX_ERROR_DETECT"},
5150 		{SLI4_FC_WCQE_STATUS_RX_ABORT_REQUEST,	"RX_ABORT_REQUEST"},
5151 		};
5152 	u32 i;
5153 
5154 	for (i = 0; i < ARRAY_SIZE(lookup); i++) {
5155 		if (status == lookup[i].code)
5156 			return lookup[i].label;
5157 	}
5158 	return "unknown";
5159 }
5160