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1 /*
2  * This file is part of the Chelsio T4 PCI-E SR-IOV Virtual Function Ethernet
3  * driver for Linux.
4  *
5  * Copyright (c) 2009-2010 Chelsio Communications, Inc. All rights reserved.
6  *
7  * This software is available to you under a choice of one of two
8  * licenses.  You may choose to be licensed under the terms of the GNU
9  * General Public License (GPL) Version 2, available from the file
10  * COPYING in the main directory of this source tree, or the
11  * OpenIB.org BSD license below:
12  *
13  *     Redistribution and use in source and binary forms, with or
14  *     without modification, are permitted provided that the following
15  *     conditions are met:
16  *
17  *      - Redistributions of source code must retain the above
18  *        copyright notice, this list of conditions and the following
19  *        disclaimer.
20  *
21  *      - Redistributions in binary form must reproduce the above
22  *        copyright notice, this list of conditions and the following
23  *        disclaimer in the documentation and/or other materials
24  *        provided with the distribution.
25  *
26  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
27  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
28  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
29  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
30  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
31  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
32  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
33  * SOFTWARE.
34  */
35 
36 #include <linux/pci.h>
37 
38 #include "t4vf_common.h"
39 #include "t4vf_defs.h"
40 
41 #include "../cxgb4/t4_regs.h"
42 #include "../cxgb4/t4_values.h"
43 #include "../cxgb4/t4fw_api.h"
44 
45 /*
46  * Wait for the device to become ready (signified by our "who am I" register
47  * returning a value other than all 1's).  Return an error if it doesn't
48  * become ready ...
49  */
t4vf_wait_dev_ready(struct adapter * adapter)50 int t4vf_wait_dev_ready(struct adapter *adapter)
51 {
52 	const u32 whoami = T4VF_PL_BASE_ADDR + PL_VF_WHOAMI;
53 	const u32 notready1 = 0xffffffff;
54 	const u32 notready2 = 0xeeeeeeee;
55 	u32 val;
56 
57 	val = t4_read_reg(adapter, whoami);
58 	if (val != notready1 && val != notready2)
59 		return 0;
60 	msleep(500);
61 	val = t4_read_reg(adapter, whoami);
62 	if (val != notready1 && val != notready2)
63 		return 0;
64 	else
65 		return -EIO;
66 }
67 
68 /*
69  * Get the reply to a mailbox command and store it in @rpl in big-endian order
70  * (since the firmware data structures are specified in a big-endian layout).
71  */
get_mbox_rpl(struct adapter * adapter,__be64 * rpl,int size,u32 mbox_data)72 static void get_mbox_rpl(struct adapter *adapter, __be64 *rpl, int size,
73 			 u32 mbox_data)
74 {
75 	for ( ; size; size -= 8, mbox_data += 8)
76 		*rpl++ = cpu_to_be64(t4_read_reg64(adapter, mbox_data));
77 }
78 
79 /**
80  *	t4vf_record_mbox - record a Firmware Mailbox Command/Reply in the log
81  *	@adapter: the adapter
82  *	@cmd: the Firmware Mailbox Command or Reply
83  *	@size: command length in bytes
84  *	@access: the time (ms) needed to access the Firmware Mailbox
85  *	@execute: the time (ms) the command spent being executed
86  */
t4vf_record_mbox(struct adapter * adapter,const __be64 * cmd,int size,int access,int execute)87 static void t4vf_record_mbox(struct adapter *adapter, const __be64 *cmd,
88 			     int size, int access, int execute)
89 {
90 	struct mbox_cmd_log *log = adapter->mbox_log;
91 	struct mbox_cmd *entry;
92 	int i;
93 
94 	entry = mbox_cmd_log_entry(log, log->cursor++);
95 	if (log->cursor == log->size)
96 		log->cursor = 0;
97 
98 	for (i = 0; i < size / 8; i++)
99 		entry->cmd[i] = be64_to_cpu(cmd[i]);
100 	while (i < MBOX_LEN / 8)
101 		entry->cmd[i++] = 0;
102 	entry->timestamp = jiffies;
103 	entry->seqno = log->seqno++;
104 	entry->access = access;
105 	entry->execute = execute;
106 }
107 
108 /**
109  *	t4vf_wr_mbox_core - send a command to FW through the mailbox
110  *	@adapter: the adapter
111  *	@cmd: the command to write
112  *	@size: command length in bytes
113  *	@rpl: where to optionally store the reply
114  *	@sleep_ok: if true we may sleep while awaiting command completion
115  *
116  *	Sends the given command to FW through the mailbox and waits for the
117  *	FW to execute the command.  If @rpl is not %NULL it is used to store
118  *	the FW's reply to the command.  The command and its optional reply
119  *	are of the same length.  FW can take up to 500 ms to respond.
120  *	@sleep_ok determines whether we may sleep while awaiting the response.
121  *	If sleeping is allowed we use progressive backoff otherwise we spin.
122  *
123  *	The return value is 0 on success or a negative errno on failure.  A
124  *	failure can happen either because we are not able to execute the
125  *	command or FW executes it but signals an error.  In the latter case
126  *	the return value is the error code indicated by FW (negated).
127  */
t4vf_wr_mbox_core(struct adapter * adapter,const void * cmd,int size,void * rpl,bool sleep_ok)128 int t4vf_wr_mbox_core(struct adapter *adapter, const void *cmd, int size,
129 		      void *rpl, bool sleep_ok)
130 {
131 	static const int delay[] = {
132 		1, 1, 3, 5, 10, 10, 20, 50, 100
133 	};
134 
135 	u16 access = 0, execute = 0;
136 	u32 v, mbox_data;
137 	int i, ms, delay_idx, ret;
138 	const __be64 *p;
139 	u32 mbox_ctl = T4VF_CIM_BASE_ADDR + CIM_VF_EXT_MAILBOX_CTRL;
140 	u32 cmd_op = FW_CMD_OP_G(be32_to_cpu(((struct fw_cmd_hdr *)cmd)->hi));
141 	__be64 cmd_rpl[MBOX_LEN / 8];
142 	struct mbox_list entry;
143 
144 	/* In T6, mailbox size is changed to 128 bytes to avoid
145 	 * invalidating the entire prefetch buffer.
146 	 */
147 	if (CHELSIO_CHIP_VERSION(adapter->params.chip) <= CHELSIO_T5)
148 		mbox_data = T4VF_MBDATA_BASE_ADDR;
149 	else
150 		mbox_data = T6VF_MBDATA_BASE_ADDR;
151 
152 	/*
153 	 * Commands must be multiples of 16 bytes in length and may not be
154 	 * larger than the size of the Mailbox Data register array.
155 	 */
156 	if ((size % 16) != 0 ||
157 	    size > NUM_CIM_VF_MAILBOX_DATA_INSTANCES * 4)
158 		return -EINVAL;
159 
160 	/* Queue ourselves onto the mailbox access list.  When our entry is at
161 	 * the front of the list, we have rights to access the mailbox.  So we
162 	 * wait [for a while] till we're at the front [or bail out with an
163 	 * EBUSY] ...
164 	 */
165 	spin_lock(&adapter->mbox_lock);
166 	list_add_tail(&entry.list, &adapter->mlist.list);
167 	spin_unlock(&adapter->mbox_lock);
168 
169 	delay_idx = 0;
170 	ms = delay[0];
171 
172 	for (i = 0; ; i += ms) {
173 		/* If we've waited too long, return a busy indication.  This
174 		 * really ought to be based on our initial position in the
175 		 * mailbox access list but this is a start.  We very rearely
176 		 * contend on access to the mailbox ...
177 		 */
178 		if (i > FW_CMD_MAX_TIMEOUT) {
179 			spin_lock(&adapter->mbox_lock);
180 			list_del(&entry.list);
181 			spin_unlock(&adapter->mbox_lock);
182 			ret = -EBUSY;
183 			t4vf_record_mbox(adapter, cmd, size, access, ret);
184 			return ret;
185 		}
186 
187 		/* If we're at the head, break out and start the mailbox
188 		 * protocol.
189 		 */
190 		if (list_first_entry(&adapter->mlist.list, struct mbox_list,
191 				     list) == &entry)
192 			break;
193 
194 		/* Delay for a bit before checking again ... */
195 		if (sleep_ok) {
196 			ms = delay[delay_idx];  /* last element may repeat */
197 			if (delay_idx < ARRAY_SIZE(delay) - 1)
198 				delay_idx++;
199 			msleep(ms);
200 		} else {
201 			mdelay(ms);
202 		}
203 	}
204 
205 	/*
206 	 * Loop trying to get ownership of the mailbox.  Return an error
207 	 * if we can't gain ownership.
208 	 */
209 	v = MBOWNER_G(t4_read_reg(adapter, mbox_ctl));
210 	for (i = 0; v == MBOX_OWNER_NONE && i < 3; i++)
211 		v = MBOWNER_G(t4_read_reg(adapter, mbox_ctl));
212 	if (v != MBOX_OWNER_DRV) {
213 		spin_lock(&adapter->mbox_lock);
214 		list_del(&entry.list);
215 		spin_unlock(&adapter->mbox_lock);
216 		ret = (v == MBOX_OWNER_FW) ? -EBUSY : -ETIMEDOUT;
217 		t4vf_record_mbox(adapter, cmd, size, access, ret);
218 		return ret;
219 	}
220 
221 	/*
222 	 * Write the command array into the Mailbox Data register array and
223 	 * transfer ownership of the mailbox to the firmware.
224 	 *
225 	 * For the VFs, the Mailbox Data "registers" are actually backed by
226 	 * T4's "MA" interface rather than PL Registers (as is the case for
227 	 * the PFs).  Because these are in different coherency domains, the
228 	 * write to the VF's PL-register-backed Mailbox Control can race in
229 	 * front of the writes to the MA-backed VF Mailbox Data "registers".
230 	 * So we need to do a read-back on at least one byte of the VF Mailbox
231 	 * Data registers before doing the write to the VF Mailbox Control
232 	 * register.
233 	 */
234 	if (cmd_op != FW_VI_STATS_CMD)
235 		t4vf_record_mbox(adapter, cmd, size, access, 0);
236 	for (i = 0, p = cmd; i < size; i += 8)
237 		t4_write_reg64(adapter, mbox_data + i, be64_to_cpu(*p++));
238 	t4_read_reg(adapter, mbox_data);         /* flush write */
239 
240 	t4_write_reg(adapter, mbox_ctl,
241 		     MBMSGVALID_F | MBOWNER_V(MBOX_OWNER_FW));
242 	t4_read_reg(adapter, mbox_ctl);          /* flush write */
243 
244 	/*
245 	 * Spin waiting for firmware to acknowledge processing our command.
246 	 */
247 	delay_idx = 0;
248 	ms = delay[0];
249 
250 	for (i = 0; i < FW_CMD_MAX_TIMEOUT; i += ms) {
251 		if (sleep_ok) {
252 			ms = delay[delay_idx];
253 			if (delay_idx < ARRAY_SIZE(delay) - 1)
254 				delay_idx++;
255 			msleep(ms);
256 		} else
257 			mdelay(ms);
258 
259 		/*
260 		 * If we're the owner, see if this is the reply we wanted.
261 		 */
262 		v = t4_read_reg(adapter, mbox_ctl);
263 		if (MBOWNER_G(v) == MBOX_OWNER_DRV) {
264 			/*
265 			 * If the Message Valid bit isn't on, revoke ownership
266 			 * of the mailbox and continue waiting for our reply.
267 			 */
268 			if ((v & MBMSGVALID_F) == 0) {
269 				t4_write_reg(adapter, mbox_ctl,
270 					     MBOWNER_V(MBOX_OWNER_NONE));
271 				continue;
272 			}
273 
274 			/*
275 			 * We now have our reply.  Extract the command return
276 			 * value, copy the reply back to our caller's buffer
277 			 * (if specified) and revoke ownership of the mailbox.
278 			 * We return the (negated) firmware command return
279 			 * code (this depends on FW_SUCCESS == 0).
280 			 */
281 			get_mbox_rpl(adapter, cmd_rpl, size, mbox_data);
282 
283 			/* return value in low-order little-endian word */
284 			v = be64_to_cpu(cmd_rpl[0]);
285 
286 			if (rpl) {
287 				/* request bit in high-order BE word */
288 				WARN_ON((be32_to_cpu(*(const __be32 *)cmd)
289 					 & FW_CMD_REQUEST_F) == 0);
290 				memcpy(rpl, cmd_rpl, size);
291 				WARN_ON((be32_to_cpu(*(__be32 *)rpl)
292 					 & FW_CMD_REQUEST_F) != 0);
293 			}
294 			t4_write_reg(adapter, mbox_ctl,
295 				     MBOWNER_V(MBOX_OWNER_NONE));
296 			execute = i + ms;
297 			if (cmd_op != FW_VI_STATS_CMD)
298 				t4vf_record_mbox(adapter, cmd_rpl, size, access,
299 						 execute);
300 			spin_lock(&adapter->mbox_lock);
301 			list_del(&entry.list);
302 			spin_unlock(&adapter->mbox_lock);
303 			return -FW_CMD_RETVAL_G(v);
304 		}
305 	}
306 
307 	/* We timed out.  Return the error ... */
308 	ret = -ETIMEDOUT;
309 	t4vf_record_mbox(adapter, cmd, size, access, ret);
310 	spin_lock(&adapter->mbox_lock);
311 	list_del(&entry.list);
312 	spin_unlock(&adapter->mbox_lock);
313 	return ret;
314 }
315 
316 /* In the Physical Function Driver Common Code, the ADVERT_MASK is used to
317  * mask out bits in the Advertised Port Capabilities which are managed via
318  * separate controls, like Pause Frames and Forward Error Correction.  In the
319  * Virtual Function Common Code, since we never perform L1 Configuration on
320  * the Link, the only things we really need to filter out are things which
321  * we decode and report separately like Speed.
322  */
323 #define ADVERT_MASK (FW_PORT_CAP32_SPEED_V(FW_PORT_CAP32_SPEED_M) | \
324 		     FW_PORT_CAP32_802_3_PAUSE | \
325 		     FW_PORT_CAP32_802_3_ASM_DIR | \
326 		     FW_PORT_CAP32_FEC_V(FW_PORT_CAP32_FEC_M) | \
327 		     FW_PORT_CAP32_ANEG)
328 
329 /**
330  *	fwcaps16_to_caps32 - convert 16-bit Port Capabilities to 32-bits
331  *	@caps16: a 16-bit Port Capabilities value
332  *
333  *	Returns the equivalent 32-bit Port Capabilities value.
334  */
fwcaps16_to_caps32(fw_port_cap16_t caps16)335 static fw_port_cap32_t fwcaps16_to_caps32(fw_port_cap16_t caps16)
336 {
337 	fw_port_cap32_t caps32 = 0;
338 
339 	#define CAP16_TO_CAP32(__cap) \
340 		do { \
341 			if (caps16 & FW_PORT_CAP_##__cap) \
342 				caps32 |= FW_PORT_CAP32_##__cap; \
343 		} while (0)
344 
345 	CAP16_TO_CAP32(SPEED_100M);
346 	CAP16_TO_CAP32(SPEED_1G);
347 	CAP16_TO_CAP32(SPEED_25G);
348 	CAP16_TO_CAP32(SPEED_10G);
349 	CAP16_TO_CAP32(SPEED_40G);
350 	CAP16_TO_CAP32(SPEED_100G);
351 	CAP16_TO_CAP32(FC_RX);
352 	CAP16_TO_CAP32(FC_TX);
353 	CAP16_TO_CAP32(ANEG);
354 	CAP16_TO_CAP32(MDIAUTO);
355 	CAP16_TO_CAP32(MDISTRAIGHT);
356 	CAP16_TO_CAP32(FEC_RS);
357 	CAP16_TO_CAP32(FEC_BASER_RS);
358 	CAP16_TO_CAP32(802_3_PAUSE);
359 	CAP16_TO_CAP32(802_3_ASM_DIR);
360 
361 	#undef CAP16_TO_CAP32
362 
363 	return caps32;
364 }
365 
366 /* Translate Firmware Pause specification to Common Code */
fwcap_to_cc_pause(fw_port_cap32_t fw_pause)367 static inline enum cc_pause fwcap_to_cc_pause(fw_port_cap32_t fw_pause)
368 {
369 	enum cc_pause cc_pause = 0;
370 
371 	if (fw_pause & FW_PORT_CAP32_FC_RX)
372 		cc_pause |= PAUSE_RX;
373 	if (fw_pause & FW_PORT_CAP32_FC_TX)
374 		cc_pause |= PAUSE_TX;
375 
376 	return cc_pause;
377 }
378 
379 /* Translate Firmware Forward Error Correction specification to Common Code */
fwcap_to_cc_fec(fw_port_cap32_t fw_fec)380 static inline enum cc_fec fwcap_to_cc_fec(fw_port_cap32_t fw_fec)
381 {
382 	enum cc_fec cc_fec = 0;
383 
384 	if (fw_fec & FW_PORT_CAP32_FEC_RS)
385 		cc_fec |= FEC_RS;
386 	if (fw_fec & FW_PORT_CAP32_FEC_BASER_RS)
387 		cc_fec |= FEC_BASER_RS;
388 
389 	return cc_fec;
390 }
391 
392 /**
393  * Return the highest speed set in the port capabilities, in Mb/s.
394  */
fwcap_to_speed(fw_port_cap32_t caps)395 static unsigned int fwcap_to_speed(fw_port_cap32_t caps)
396 {
397 	#define TEST_SPEED_RETURN(__caps_speed, __speed) \
398 		do { \
399 			if (caps & FW_PORT_CAP32_SPEED_##__caps_speed) \
400 				return __speed; \
401 		} while (0)
402 
403 	TEST_SPEED_RETURN(400G, 400000);
404 	TEST_SPEED_RETURN(200G, 200000);
405 	TEST_SPEED_RETURN(100G, 100000);
406 	TEST_SPEED_RETURN(50G,   50000);
407 	TEST_SPEED_RETURN(40G,   40000);
408 	TEST_SPEED_RETURN(25G,   25000);
409 	TEST_SPEED_RETURN(10G,   10000);
410 	TEST_SPEED_RETURN(1G,     1000);
411 	TEST_SPEED_RETURN(100M,    100);
412 
413 	#undef TEST_SPEED_RETURN
414 
415 	return 0;
416 }
417 
418 /**
419  *      fwcap_to_fwspeed - return highest speed in Port Capabilities
420  *      @acaps: advertised Port Capabilities
421  *
422  *      Get the highest speed for the port from the advertised Port
423  *      Capabilities.  It will be either the highest speed from the list of
424  *      speeds or whatever user has set using ethtool.
425  */
fwcap_to_fwspeed(fw_port_cap32_t acaps)426 static fw_port_cap32_t fwcap_to_fwspeed(fw_port_cap32_t acaps)
427 {
428 	#define TEST_SPEED_RETURN(__caps_speed) \
429 		do { \
430 			if (acaps & FW_PORT_CAP32_SPEED_##__caps_speed) \
431 				return FW_PORT_CAP32_SPEED_##__caps_speed; \
432 		} while (0)
433 
434 	TEST_SPEED_RETURN(400G);
435 	TEST_SPEED_RETURN(200G);
436 	TEST_SPEED_RETURN(100G);
437 	TEST_SPEED_RETURN(50G);
438 	TEST_SPEED_RETURN(40G);
439 	TEST_SPEED_RETURN(25G);
440 	TEST_SPEED_RETURN(10G);
441 	TEST_SPEED_RETURN(1G);
442 	TEST_SPEED_RETURN(100M);
443 
444 	#undef TEST_SPEED_RETURN
445 	return 0;
446 }
447 
448 /*
449  *	init_link_config - initialize a link's SW state
450  *	@lc: structure holding the link state
451  *	@pcaps: link Port Capabilities
452  *	@acaps: link current Advertised Port Capabilities
453  *
454  *	Initializes the SW state maintained for each link, including the link's
455  *	capabilities and default speed/flow-control/autonegotiation settings.
456  */
init_link_config(struct link_config * lc,fw_port_cap32_t pcaps,fw_port_cap32_t acaps)457 static void init_link_config(struct link_config *lc,
458 			     fw_port_cap32_t pcaps,
459 			     fw_port_cap32_t acaps)
460 {
461 	lc->pcaps = pcaps;
462 	lc->lpacaps = 0;
463 	lc->speed_caps = 0;
464 	lc->speed = 0;
465 	lc->requested_fc = lc->fc = PAUSE_RX | PAUSE_TX;
466 
467 	/* For Forward Error Control, we default to whatever the Firmware
468 	 * tells us the Link is currently advertising.
469 	 */
470 	lc->auto_fec = fwcap_to_cc_fec(acaps);
471 	lc->requested_fec = FEC_AUTO;
472 	lc->fec = lc->auto_fec;
473 
474 	/* If the Port is capable of Auto-Negtotiation, initialize it as
475 	 * "enabled" and copy over all of the Physical Port Capabilities
476 	 * to the Advertised Port Capabilities.  Otherwise mark it as
477 	 * Auto-Negotiate disabled and select the highest supported speed
478 	 * for the link.  Note parallel structure in t4_link_l1cfg_core()
479 	 * and t4_handle_get_port_info().
480 	 */
481 	if (lc->pcaps & FW_PORT_CAP32_ANEG) {
482 		lc->acaps = acaps & ADVERT_MASK;
483 		lc->autoneg = AUTONEG_ENABLE;
484 		lc->requested_fc |= PAUSE_AUTONEG;
485 	} else {
486 		lc->acaps = 0;
487 		lc->autoneg = AUTONEG_DISABLE;
488 		lc->speed_caps = fwcap_to_fwspeed(acaps);
489 	}
490 }
491 
492 /**
493  *	t4vf_port_init - initialize port hardware/software state
494  *	@adapter: the adapter
495  *	@pidx: the adapter port index
496  */
t4vf_port_init(struct adapter * adapter,int pidx)497 int t4vf_port_init(struct adapter *adapter, int pidx)
498 {
499 	struct port_info *pi = adap2pinfo(adapter, pidx);
500 	unsigned int fw_caps = adapter->params.fw_caps_support;
501 	struct fw_vi_cmd vi_cmd, vi_rpl;
502 	struct fw_port_cmd port_cmd, port_rpl;
503 	enum fw_port_type port_type;
504 	int mdio_addr;
505 	fw_port_cap32_t pcaps, acaps;
506 	int ret;
507 
508 	/* If we haven't yet determined whether we're talking to Firmware
509 	 * which knows the new 32-bit Port Capabilities, it's time to find
510 	 * out now.  This will also tell new Firmware to send us Port Status
511 	 * Updates using the new 32-bit Port Capabilities version of the
512 	 * Port Information message.
513 	 */
514 	if (fw_caps == FW_CAPS_UNKNOWN) {
515 		u32 param, val;
516 
517 		param = (FW_PARAMS_MNEM_V(FW_PARAMS_MNEM_PFVF) |
518 			 FW_PARAMS_PARAM_X_V(FW_PARAMS_PARAM_PFVF_PORT_CAPS32));
519 		val = 1;
520 		ret = t4vf_set_params(adapter, 1, &param, &val);
521 		fw_caps = (ret == 0 ? FW_CAPS32 : FW_CAPS16);
522 		adapter->params.fw_caps_support = fw_caps;
523 	}
524 
525 	/*
526 	 * Execute a VI Read command to get our Virtual Interface information
527 	 * like MAC address, etc.
528 	 */
529 	memset(&vi_cmd, 0, sizeof(vi_cmd));
530 	vi_cmd.op_to_vfn = cpu_to_be32(FW_CMD_OP_V(FW_VI_CMD) |
531 				       FW_CMD_REQUEST_F |
532 				       FW_CMD_READ_F);
533 	vi_cmd.alloc_to_len16 = cpu_to_be32(FW_LEN16(vi_cmd));
534 	vi_cmd.type_viid = cpu_to_be16(FW_VI_CMD_VIID_V(pi->viid));
535 	ret = t4vf_wr_mbox(adapter, &vi_cmd, sizeof(vi_cmd), &vi_rpl);
536 	if (ret != FW_SUCCESS)
537 		return ret;
538 
539 	BUG_ON(pi->port_id != FW_VI_CMD_PORTID_G(vi_rpl.portid_pkd));
540 	pi->rss_size = FW_VI_CMD_RSSSIZE_G(be16_to_cpu(vi_rpl.rsssize_pkd));
541 	t4_os_set_hw_addr(adapter, pidx, vi_rpl.mac);
542 
543 	/*
544 	 * If we don't have read access to our port information, we're done
545 	 * now.  Otherwise, execute a PORT Read command to get it ...
546 	 */
547 	if (!(adapter->params.vfres.r_caps & FW_CMD_CAP_PORT))
548 		return 0;
549 
550 	memset(&port_cmd, 0, sizeof(port_cmd));
551 	port_cmd.op_to_portid = cpu_to_be32(FW_CMD_OP_V(FW_PORT_CMD) |
552 					    FW_CMD_REQUEST_F |
553 					    FW_CMD_READ_F |
554 					    FW_PORT_CMD_PORTID_V(pi->port_id));
555 	port_cmd.action_to_len16 = cpu_to_be32(
556 		FW_PORT_CMD_ACTION_V(fw_caps == FW_CAPS16
557 				     ? FW_PORT_ACTION_GET_PORT_INFO
558 				     : FW_PORT_ACTION_GET_PORT_INFO32) |
559 		FW_LEN16(port_cmd));
560 	ret = t4vf_wr_mbox(adapter, &port_cmd, sizeof(port_cmd), &port_rpl);
561 	if (ret != FW_SUCCESS)
562 		return ret;
563 
564 	/* Extract the various fields from the Port Information message. */
565 	if (fw_caps == FW_CAPS16) {
566 		u32 lstatus = be32_to_cpu(port_rpl.u.info.lstatus_to_modtype);
567 
568 		port_type = FW_PORT_CMD_PTYPE_G(lstatus);
569 		mdio_addr = ((lstatus & FW_PORT_CMD_MDIOCAP_F)
570 			     ? FW_PORT_CMD_MDIOADDR_G(lstatus)
571 			     : -1);
572 		pcaps = fwcaps16_to_caps32(be16_to_cpu(port_rpl.u.info.pcap));
573 		acaps = fwcaps16_to_caps32(be16_to_cpu(port_rpl.u.info.acap));
574 	} else {
575 		u32 lstatus32 =
576 			   be32_to_cpu(port_rpl.u.info32.lstatus32_to_cbllen32);
577 
578 		port_type = FW_PORT_CMD_PORTTYPE32_G(lstatus32);
579 		mdio_addr = ((lstatus32 & FW_PORT_CMD_MDIOCAP32_F)
580 			     ? FW_PORT_CMD_MDIOADDR32_G(lstatus32)
581 			     : -1);
582 		pcaps = be32_to_cpu(port_rpl.u.info32.pcaps32);
583 		acaps = be32_to_cpu(port_rpl.u.info32.acaps32);
584 	}
585 
586 	pi->port_type = port_type;
587 	pi->mdio_addr = mdio_addr;
588 	pi->mod_type = FW_PORT_MOD_TYPE_NA;
589 
590 	init_link_config(&pi->link_cfg, pcaps, acaps);
591 	return 0;
592 }
593 
594 /**
595  *      t4vf_fw_reset - issue a reset to FW
596  *      @adapter: the adapter
597  *
598  *	Issues a reset command to FW.  For a Physical Function this would
599  *	result in the Firmware resetting all of its state.  For a Virtual
600  *	Function this just resets the state associated with the VF.
601  */
t4vf_fw_reset(struct adapter * adapter)602 int t4vf_fw_reset(struct adapter *adapter)
603 {
604 	struct fw_reset_cmd cmd;
605 
606 	memset(&cmd, 0, sizeof(cmd));
607 	cmd.op_to_write = cpu_to_be32(FW_CMD_OP_V(FW_RESET_CMD) |
608 				      FW_CMD_WRITE_F);
609 	cmd.retval_len16 = cpu_to_be32(FW_LEN16(cmd));
610 	return t4vf_wr_mbox(adapter, &cmd, sizeof(cmd), NULL);
611 }
612 
613 /**
614  *	t4vf_query_params - query FW or device parameters
615  *	@adapter: the adapter
616  *	@nparams: the number of parameters
617  *	@params: the parameter names
618  *	@vals: the parameter values
619  *
620  *	Reads the values of firmware or device parameters.  Up to 7 parameters
621  *	can be queried at once.
622  */
t4vf_query_params(struct adapter * adapter,unsigned int nparams,const u32 * params,u32 * vals)623 static int t4vf_query_params(struct adapter *adapter, unsigned int nparams,
624 			     const u32 *params, u32 *vals)
625 {
626 	int i, ret;
627 	struct fw_params_cmd cmd, rpl;
628 	struct fw_params_param *p;
629 	size_t len16;
630 
631 	if (nparams > 7)
632 		return -EINVAL;
633 
634 	memset(&cmd, 0, sizeof(cmd));
635 	cmd.op_to_vfn = cpu_to_be32(FW_CMD_OP_V(FW_PARAMS_CMD) |
636 				    FW_CMD_REQUEST_F |
637 				    FW_CMD_READ_F);
638 	len16 = DIV_ROUND_UP(offsetof(struct fw_params_cmd,
639 				      param[nparams].mnem), 16);
640 	cmd.retval_len16 = cpu_to_be32(FW_CMD_LEN16_V(len16));
641 	for (i = 0, p = &cmd.param[0]; i < nparams; i++, p++)
642 		p->mnem = htonl(*params++);
643 
644 	ret = t4vf_wr_mbox(adapter, &cmd, sizeof(cmd), &rpl);
645 	if (ret == 0)
646 		for (i = 0, p = &rpl.param[0]; i < nparams; i++, p++)
647 			*vals++ = be32_to_cpu(p->val);
648 	return ret;
649 }
650 
651 /**
652  *	t4vf_set_params - sets FW or device parameters
653  *	@adapter: the adapter
654  *	@nparams: the number of parameters
655  *	@params: the parameter names
656  *	@vals: the parameter values
657  *
658  *	Sets the values of firmware or device parameters.  Up to 7 parameters
659  *	can be specified at once.
660  */
t4vf_set_params(struct adapter * adapter,unsigned int nparams,const u32 * params,const u32 * vals)661 int t4vf_set_params(struct adapter *adapter, unsigned int nparams,
662 		    const u32 *params, const u32 *vals)
663 {
664 	int i;
665 	struct fw_params_cmd cmd;
666 	struct fw_params_param *p;
667 	size_t len16;
668 
669 	if (nparams > 7)
670 		return -EINVAL;
671 
672 	memset(&cmd, 0, sizeof(cmd));
673 	cmd.op_to_vfn = cpu_to_be32(FW_CMD_OP_V(FW_PARAMS_CMD) |
674 				    FW_CMD_REQUEST_F |
675 				    FW_CMD_WRITE_F);
676 	len16 = DIV_ROUND_UP(offsetof(struct fw_params_cmd,
677 				      param[nparams]), 16);
678 	cmd.retval_len16 = cpu_to_be32(FW_CMD_LEN16_V(len16));
679 	for (i = 0, p = &cmd.param[0]; i < nparams; i++, p++) {
680 		p->mnem = cpu_to_be32(*params++);
681 		p->val = cpu_to_be32(*vals++);
682 	}
683 
684 	return t4vf_wr_mbox(adapter, &cmd, sizeof(cmd), NULL);
685 }
686 
687 /**
688  *	t4vf_fl_pkt_align - return the fl packet alignment
689  *	@adapter: the adapter
690  *
691  *	T4 has a single field to specify the packing and padding boundary.
692  *	T5 onwards has separate fields for this and hence the alignment for
693  *	next packet offset is maximum of these two.  And T6 changes the
694  *	Ingress Padding Boundary Shift, so it's all a mess and it's best
695  *	if we put this in low-level Common Code ...
696  *
697  */
t4vf_fl_pkt_align(struct adapter * adapter)698 int t4vf_fl_pkt_align(struct adapter *adapter)
699 {
700 	u32 sge_control, sge_control2;
701 	unsigned int ingpadboundary, ingpackboundary, fl_align, ingpad_shift;
702 
703 	sge_control = adapter->params.sge.sge_control;
704 
705 	/* T4 uses a single control field to specify both the PCIe Padding and
706 	 * Packing Boundary.  T5 introduced the ability to specify these
707 	 * separately.  The actual Ingress Packet Data alignment boundary
708 	 * within Packed Buffer Mode is the maximum of these two
709 	 * specifications.  (Note that it makes no real practical sense to
710 	 * have the Pading Boudary be larger than the Packing Boundary but you
711 	 * could set the chip up that way and, in fact, legacy T4 code would
712 	 * end doing this because it would initialize the Padding Boundary and
713 	 * leave the Packing Boundary initialized to 0 (16 bytes).)
714 	 * Padding Boundary values in T6 starts from 8B,
715 	 * where as it is 32B for T4 and T5.
716 	 */
717 	if (CHELSIO_CHIP_VERSION(adapter->params.chip) <= CHELSIO_T5)
718 		ingpad_shift = INGPADBOUNDARY_SHIFT_X;
719 	else
720 		ingpad_shift = T6_INGPADBOUNDARY_SHIFT_X;
721 
722 	ingpadboundary = 1 << (INGPADBOUNDARY_G(sge_control) + ingpad_shift);
723 
724 	fl_align = ingpadboundary;
725 	if (!is_t4(adapter->params.chip)) {
726 		/* T5 has a different interpretation of one of the PCIe Packing
727 		 * Boundary values.
728 		 */
729 		sge_control2 = adapter->params.sge.sge_control2;
730 		ingpackboundary = INGPACKBOUNDARY_G(sge_control2);
731 		if (ingpackboundary == INGPACKBOUNDARY_16B_X)
732 			ingpackboundary = 16;
733 		else
734 			ingpackboundary = 1 << (ingpackboundary +
735 						INGPACKBOUNDARY_SHIFT_X);
736 
737 		fl_align = max(ingpadboundary, ingpackboundary);
738 	}
739 	return fl_align;
740 }
741 
742 /**
743  *	t4vf_bar2_sge_qregs - return BAR2 SGE Queue register information
744  *	@adapter: the adapter
745  *	@qid: the Queue ID
746  *	@qtype: the Ingress or Egress type for @qid
747  *	@pbar2_qoffset: BAR2 Queue Offset
748  *	@pbar2_qid: BAR2 Queue ID or 0 for Queue ID inferred SGE Queues
749  *
750  *	Returns the BAR2 SGE Queue Registers information associated with the
751  *	indicated Absolute Queue ID.  These are passed back in return value
752  *	pointers.  @qtype should be T4_BAR2_QTYPE_EGRESS for Egress Queue
753  *	and T4_BAR2_QTYPE_INGRESS for Ingress Queues.
754  *
755  *	This may return an error which indicates that BAR2 SGE Queue
756  *	registers aren't available.  If an error is not returned, then the
757  *	following values are returned:
758  *
759  *	  *@pbar2_qoffset: the BAR2 Offset of the @qid Registers
760  *	  *@pbar2_qid: the BAR2 SGE Queue ID or 0 of @qid
761  *
762  *	If the returned BAR2 Queue ID is 0, then BAR2 SGE registers which
763  *	require the "Inferred Queue ID" ability may be used.  E.g. the
764  *	Write Combining Doorbell Buffer. If the BAR2 Queue ID is not 0,
765  *	then these "Inferred Queue ID" register may not be used.
766  */
t4vf_bar2_sge_qregs(struct adapter * adapter,unsigned int qid,enum t4_bar2_qtype qtype,u64 * pbar2_qoffset,unsigned int * pbar2_qid)767 int t4vf_bar2_sge_qregs(struct adapter *adapter,
768 			unsigned int qid,
769 			enum t4_bar2_qtype qtype,
770 			u64 *pbar2_qoffset,
771 			unsigned int *pbar2_qid)
772 {
773 	unsigned int page_shift, page_size, qpp_shift, qpp_mask;
774 	u64 bar2_page_offset, bar2_qoffset;
775 	unsigned int bar2_qid, bar2_qid_offset, bar2_qinferred;
776 
777 	/* T4 doesn't support BAR2 SGE Queue registers.
778 	 */
779 	if (is_t4(adapter->params.chip))
780 		return -EINVAL;
781 
782 	/* Get our SGE Page Size parameters.
783 	 */
784 	page_shift = adapter->params.sge.sge_vf_hps + 10;
785 	page_size = 1 << page_shift;
786 
787 	/* Get the right Queues per Page parameters for our Queue.
788 	 */
789 	qpp_shift = (qtype == T4_BAR2_QTYPE_EGRESS
790 		     ? adapter->params.sge.sge_vf_eq_qpp
791 		     : adapter->params.sge.sge_vf_iq_qpp);
792 	qpp_mask = (1 << qpp_shift) - 1;
793 
794 	/* Calculate the basics of the BAR2 SGE Queue register area:
795 	 *  o The BAR2 page the Queue registers will be in.
796 	 *  o The BAR2 Queue ID.
797 	 *  o The BAR2 Queue ID Offset into the BAR2 page.
798 	 */
799 	bar2_page_offset = ((u64)(qid >> qpp_shift) << page_shift);
800 	bar2_qid = qid & qpp_mask;
801 	bar2_qid_offset = bar2_qid * SGE_UDB_SIZE;
802 
803 	/* If the BAR2 Queue ID Offset is less than the Page Size, then the
804 	 * hardware will infer the Absolute Queue ID simply from the writes to
805 	 * the BAR2 Queue ID Offset within the BAR2 Page (and we need to use a
806 	 * BAR2 Queue ID of 0 for those writes).  Otherwise, we'll simply
807 	 * write to the first BAR2 SGE Queue Area within the BAR2 Page with
808 	 * the BAR2 Queue ID and the hardware will infer the Absolute Queue ID
809 	 * from the BAR2 Page and BAR2 Queue ID.
810 	 *
811 	 * One important censequence of this is that some BAR2 SGE registers
812 	 * have a "Queue ID" field and we can write the BAR2 SGE Queue ID
813 	 * there.  But other registers synthesize the SGE Queue ID purely
814 	 * from the writes to the registers -- the Write Combined Doorbell
815 	 * Buffer is a good example.  These BAR2 SGE Registers are only
816 	 * available for those BAR2 SGE Register areas where the SGE Absolute
817 	 * Queue ID can be inferred from simple writes.
818 	 */
819 	bar2_qoffset = bar2_page_offset;
820 	bar2_qinferred = (bar2_qid_offset < page_size);
821 	if (bar2_qinferred) {
822 		bar2_qoffset += bar2_qid_offset;
823 		bar2_qid = 0;
824 	}
825 
826 	*pbar2_qoffset = bar2_qoffset;
827 	*pbar2_qid = bar2_qid;
828 	return 0;
829 }
830 
t4vf_get_pf_from_vf(struct adapter * adapter)831 unsigned int t4vf_get_pf_from_vf(struct adapter *adapter)
832 {
833 	u32 whoami;
834 
835 	whoami = t4_read_reg(adapter, T4VF_PL_BASE_ADDR + PL_VF_WHOAMI_A);
836 	return (CHELSIO_CHIP_VERSION(adapter->params.chip) <= CHELSIO_T5 ?
837 			SOURCEPF_G(whoami) : T6_SOURCEPF_G(whoami));
838 }
839 
840 /**
841  *	t4vf_get_sge_params - retrieve adapter Scatter gather Engine parameters
842  *	@adapter: the adapter
843  *
844  *	Retrieves various core SGE parameters in the form of hardware SGE
845  *	register values.  The caller is responsible for decoding these as
846  *	needed.  The SGE parameters are stored in @adapter->params.sge.
847  */
t4vf_get_sge_params(struct adapter * adapter)848 int t4vf_get_sge_params(struct adapter *adapter)
849 {
850 	struct sge_params *sge_params = &adapter->params.sge;
851 	u32 params[7], vals[7];
852 	int v;
853 
854 	params[0] = (FW_PARAMS_MNEM_V(FW_PARAMS_MNEM_REG) |
855 		     FW_PARAMS_PARAM_XYZ_V(SGE_CONTROL_A));
856 	params[1] = (FW_PARAMS_MNEM_V(FW_PARAMS_MNEM_REG) |
857 		     FW_PARAMS_PARAM_XYZ_V(SGE_HOST_PAGE_SIZE_A));
858 	params[2] = (FW_PARAMS_MNEM_V(FW_PARAMS_MNEM_REG) |
859 		     FW_PARAMS_PARAM_XYZ_V(SGE_FL_BUFFER_SIZE0_A));
860 	params[3] = (FW_PARAMS_MNEM_V(FW_PARAMS_MNEM_REG) |
861 		     FW_PARAMS_PARAM_XYZ_V(SGE_FL_BUFFER_SIZE1_A));
862 	params[4] = (FW_PARAMS_MNEM_V(FW_PARAMS_MNEM_REG) |
863 		     FW_PARAMS_PARAM_XYZ_V(SGE_TIMER_VALUE_0_AND_1_A));
864 	params[5] = (FW_PARAMS_MNEM_V(FW_PARAMS_MNEM_REG) |
865 		     FW_PARAMS_PARAM_XYZ_V(SGE_TIMER_VALUE_2_AND_3_A));
866 	params[6] = (FW_PARAMS_MNEM_V(FW_PARAMS_MNEM_REG) |
867 		     FW_PARAMS_PARAM_XYZ_V(SGE_TIMER_VALUE_4_AND_5_A));
868 	v = t4vf_query_params(adapter, 7, params, vals);
869 	if (v)
870 		return v;
871 	sge_params->sge_control = vals[0];
872 	sge_params->sge_host_page_size = vals[1];
873 	sge_params->sge_fl_buffer_size[0] = vals[2];
874 	sge_params->sge_fl_buffer_size[1] = vals[3];
875 	sge_params->sge_timer_value_0_and_1 = vals[4];
876 	sge_params->sge_timer_value_2_and_3 = vals[5];
877 	sge_params->sge_timer_value_4_and_5 = vals[6];
878 
879 	/* T4 uses a single control field to specify both the PCIe Padding and
880 	 * Packing Boundary.  T5 introduced the ability to specify these
881 	 * separately with the Padding Boundary in SGE_CONTROL and and Packing
882 	 * Boundary in SGE_CONTROL2.  So for T5 and later we need to grab
883 	 * SGE_CONTROL in order to determine how ingress packet data will be
884 	 * laid out in Packed Buffer Mode.  Unfortunately, older versions of
885 	 * the firmware won't let us retrieve SGE_CONTROL2 so if we get a
886 	 * failure grabbing it we throw an error since we can't figure out the
887 	 * right value.
888 	 */
889 	if (!is_t4(adapter->params.chip)) {
890 		params[0] = (FW_PARAMS_MNEM_V(FW_PARAMS_MNEM_REG) |
891 			     FW_PARAMS_PARAM_XYZ_V(SGE_CONTROL2_A));
892 		v = t4vf_query_params(adapter, 1, params, vals);
893 		if (v != FW_SUCCESS) {
894 			dev_err(adapter->pdev_dev,
895 				"Unable to get SGE Control2; "
896 				"probably old firmware.\n");
897 			return v;
898 		}
899 		sge_params->sge_control2 = vals[0];
900 	}
901 
902 	params[0] = (FW_PARAMS_MNEM_V(FW_PARAMS_MNEM_REG) |
903 		     FW_PARAMS_PARAM_XYZ_V(SGE_INGRESS_RX_THRESHOLD_A));
904 	params[1] = (FW_PARAMS_MNEM_V(FW_PARAMS_MNEM_REG) |
905 		     FW_PARAMS_PARAM_XYZ_V(SGE_CONM_CTRL_A));
906 	v = t4vf_query_params(adapter, 2, params, vals);
907 	if (v)
908 		return v;
909 	sge_params->sge_ingress_rx_threshold = vals[0];
910 	sge_params->sge_congestion_control = vals[1];
911 
912 	/* For T5 and later we want to use the new BAR2 Doorbells.
913 	 * Unfortunately, older firmware didn't allow the this register to be
914 	 * read.
915 	 */
916 	if (!is_t4(adapter->params.chip)) {
917 		unsigned int pf, s_hps, s_qpp;
918 
919 		params[0] = (FW_PARAMS_MNEM_V(FW_PARAMS_MNEM_REG) |
920 			     FW_PARAMS_PARAM_XYZ_V(
921 				     SGE_EGRESS_QUEUES_PER_PAGE_VF_A));
922 		params[1] = (FW_PARAMS_MNEM_V(FW_PARAMS_MNEM_REG) |
923 			     FW_PARAMS_PARAM_XYZ_V(
924 				     SGE_INGRESS_QUEUES_PER_PAGE_VF_A));
925 		v = t4vf_query_params(adapter, 2, params, vals);
926 		if (v != FW_SUCCESS) {
927 			dev_warn(adapter->pdev_dev,
928 				 "Unable to get VF SGE Queues/Page; "
929 				 "probably old firmware.\n");
930 			return v;
931 		}
932 		sge_params->sge_egress_queues_per_page = vals[0];
933 		sge_params->sge_ingress_queues_per_page = vals[1];
934 
935 		/* We need the Queues/Page for our VF.  This is based on the
936 		 * PF from which we're instantiated and is indexed in the
937 		 * register we just read. Do it once here so other code in
938 		 * the driver can just use it.
939 		 */
940 		pf = t4vf_get_pf_from_vf(adapter);
941 		s_hps = (HOSTPAGESIZEPF0_S +
942 			 (HOSTPAGESIZEPF1_S - HOSTPAGESIZEPF0_S) * pf);
943 		sge_params->sge_vf_hps =
944 			((sge_params->sge_host_page_size >> s_hps)
945 			 & HOSTPAGESIZEPF0_M);
946 
947 		s_qpp = (QUEUESPERPAGEPF0_S +
948 			 (QUEUESPERPAGEPF1_S - QUEUESPERPAGEPF0_S) * pf);
949 		sge_params->sge_vf_eq_qpp =
950 			((sge_params->sge_egress_queues_per_page >> s_qpp)
951 			 & QUEUESPERPAGEPF0_M);
952 		sge_params->sge_vf_iq_qpp =
953 			((sge_params->sge_ingress_queues_per_page >> s_qpp)
954 			 & QUEUESPERPAGEPF0_M);
955 	}
956 
957 	return 0;
958 }
959 
960 /**
961  *	t4vf_get_vpd_params - retrieve device VPD paremeters
962  *	@adapter: the adapter
963  *
964  *	Retrives various device Vital Product Data parameters.  The parameters
965  *	are stored in @adapter->params.vpd.
966  */
t4vf_get_vpd_params(struct adapter * adapter)967 int t4vf_get_vpd_params(struct adapter *adapter)
968 {
969 	struct vpd_params *vpd_params = &adapter->params.vpd;
970 	u32 params[7], vals[7];
971 	int v;
972 
973 	params[0] = (FW_PARAMS_MNEM_V(FW_PARAMS_MNEM_DEV) |
974 		     FW_PARAMS_PARAM_X_V(FW_PARAMS_PARAM_DEV_CCLK));
975 	v = t4vf_query_params(adapter, 1, params, vals);
976 	if (v)
977 		return v;
978 	vpd_params->cclk = vals[0];
979 
980 	return 0;
981 }
982 
983 /**
984  *	t4vf_get_dev_params - retrieve device paremeters
985  *	@adapter: the adapter
986  *
987  *	Retrives various device parameters.  The parameters are stored in
988  *	@adapter->params.dev.
989  */
t4vf_get_dev_params(struct adapter * adapter)990 int t4vf_get_dev_params(struct adapter *adapter)
991 {
992 	struct dev_params *dev_params = &adapter->params.dev;
993 	u32 params[7], vals[7];
994 	int v;
995 
996 	params[0] = (FW_PARAMS_MNEM_V(FW_PARAMS_MNEM_DEV) |
997 		     FW_PARAMS_PARAM_X_V(FW_PARAMS_PARAM_DEV_FWREV));
998 	params[1] = (FW_PARAMS_MNEM_V(FW_PARAMS_MNEM_DEV) |
999 		     FW_PARAMS_PARAM_X_V(FW_PARAMS_PARAM_DEV_TPREV));
1000 	v = t4vf_query_params(adapter, 2, params, vals);
1001 	if (v)
1002 		return v;
1003 	dev_params->fwrev = vals[0];
1004 	dev_params->tprev = vals[1];
1005 
1006 	return 0;
1007 }
1008 
1009 /**
1010  *	t4vf_get_rss_glb_config - retrieve adapter RSS Global Configuration
1011  *	@adapter: the adapter
1012  *
1013  *	Retrieves global RSS mode and parameters with which we have to live
1014  *	and stores them in the @adapter's RSS parameters.
1015  */
t4vf_get_rss_glb_config(struct adapter * adapter)1016 int t4vf_get_rss_glb_config(struct adapter *adapter)
1017 {
1018 	struct rss_params *rss = &adapter->params.rss;
1019 	struct fw_rss_glb_config_cmd cmd, rpl;
1020 	int v;
1021 
1022 	/*
1023 	 * Execute an RSS Global Configuration read command to retrieve
1024 	 * our RSS configuration.
1025 	 */
1026 	memset(&cmd, 0, sizeof(cmd));
1027 	cmd.op_to_write = cpu_to_be32(FW_CMD_OP_V(FW_RSS_GLB_CONFIG_CMD) |
1028 				      FW_CMD_REQUEST_F |
1029 				      FW_CMD_READ_F);
1030 	cmd.retval_len16 = cpu_to_be32(FW_LEN16(cmd));
1031 	v = t4vf_wr_mbox(adapter, &cmd, sizeof(cmd), &rpl);
1032 	if (v)
1033 		return v;
1034 
1035 	/*
1036 	 * Transate the big-endian RSS Global Configuration into our
1037 	 * cpu-endian format based on the RSS mode.  We also do first level
1038 	 * filtering at this point to weed out modes which don't support
1039 	 * VF Drivers ...
1040 	 */
1041 	rss->mode = FW_RSS_GLB_CONFIG_CMD_MODE_G(
1042 			be32_to_cpu(rpl.u.manual.mode_pkd));
1043 	switch (rss->mode) {
1044 	case FW_RSS_GLB_CONFIG_CMD_MODE_BASICVIRTUAL: {
1045 		u32 word = be32_to_cpu(
1046 				rpl.u.basicvirtual.synmapen_to_hashtoeplitz);
1047 
1048 		rss->u.basicvirtual.synmapen =
1049 			((word & FW_RSS_GLB_CONFIG_CMD_SYNMAPEN_F) != 0);
1050 		rss->u.basicvirtual.syn4tupenipv6 =
1051 			((word & FW_RSS_GLB_CONFIG_CMD_SYN4TUPENIPV6_F) != 0);
1052 		rss->u.basicvirtual.syn2tupenipv6 =
1053 			((word & FW_RSS_GLB_CONFIG_CMD_SYN2TUPENIPV6_F) != 0);
1054 		rss->u.basicvirtual.syn4tupenipv4 =
1055 			((word & FW_RSS_GLB_CONFIG_CMD_SYN4TUPENIPV4_F) != 0);
1056 		rss->u.basicvirtual.syn2tupenipv4 =
1057 			((word & FW_RSS_GLB_CONFIG_CMD_SYN2TUPENIPV4_F) != 0);
1058 
1059 		rss->u.basicvirtual.ofdmapen =
1060 			((word & FW_RSS_GLB_CONFIG_CMD_OFDMAPEN_F) != 0);
1061 
1062 		rss->u.basicvirtual.tnlmapen =
1063 			((word & FW_RSS_GLB_CONFIG_CMD_TNLMAPEN_F) != 0);
1064 		rss->u.basicvirtual.tnlalllookup =
1065 			((word  & FW_RSS_GLB_CONFIG_CMD_TNLALLLKP_F) != 0);
1066 
1067 		rss->u.basicvirtual.hashtoeplitz =
1068 			((word & FW_RSS_GLB_CONFIG_CMD_HASHTOEPLITZ_F) != 0);
1069 
1070 		/* we need at least Tunnel Map Enable to be set */
1071 		if (!rss->u.basicvirtual.tnlmapen)
1072 			return -EINVAL;
1073 		break;
1074 	}
1075 
1076 	default:
1077 		/* all unknown/unsupported RSS modes result in an error */
1078 		return -EINVAL;
1079 	}
1080 
1081 	return 0;
1082 }
1083 
1084 /**
1085  *	t4vf_get_vfres - retrieve VF resource limits
1086  *	@adapter: the adapter
1087  *
1088  *	Retrieves configured resource limits and capabilities for a virtual
1089  *	function.  The results are stored in @adapter->vfres.
1090  */
t4vf_get_vfres(struct adapter * adapter)1091 int t4vf_get_vfres(struct adapter *adapter)
1092 {
1093 	struct vf_resources *vfres = &adapter->params.vfres;
1094 	struct fw_pfvf_cmd cmd, rpl;
1095 	int v;
1096 	u32 word;
1097 
1098 	/*
1099 	 * Execute PFVF Read command to get VF resource limits; bail out early
1100 	 * with error on command failure.
1101 	 */
1102 	memset(&cmd, 0, sizeof(cmd));
1103 	cmd.op_to_vfn = cpu_to_be32(FW_CMD_OP_V(FW_PFVF_CMD) |
1104 				    FW_CMD_REQUEST_F |
1105 				    FW_CMD_READ_F);
1106 	cmd.retval_len16 = cpu_to_be32(FW_LEN16(cmd));
1107 	v = t4vf_wr_mbox(adapter, &cmd, sizeof(cmd), &rpl);
1108 	if (v)
1109 		return v;
1110 
1111 	/*
1112 	 * Extract VF resource limits and return success.
1113 	 */
1114 	word = be32_to_cpu(rpl.niqflint_niq);
1115 	vfres->niqflint = FW_PFVF_CMD_NIQFLINT_G(word);
1116 	vfres->niq = FW_PFVF_CMD_NIQ_G(word);
1117 
1118 	word = be32_to_cpu(rpl.type_to_neq);
1119 	vfres->neq = FW_PFVF_CMD_NEQ_G(word);
1120 	vfres->pmask = FW_PFVF_CMD_PMASK_G(word);
1121 
1122 	word = be32_to_cpu(rpl.tc_to_nexactf);
1123 	vfres->tc = FW_PFVF_CMD_TC_G(word);
1124 	vfres->nvi = FW_PFVF_CMD_NVI_G(word);
1125 	vfres->nexactf = FW_PFVF_CMD_NEXACTF_G(word);
1126 
1127 	word = be32_to_cpu(rpl.r_caps_to_nethctrl);
1128 	vfres->r_caps = FW_PFVF_CMD_R_CAPS_G(word);
1129 	vfres->wx_caps = FW_PFVF_CMD_WX_CAPS_G(word);
1130 	vfres->nethctrl = FW_PFVF_CMD_NETHCTRL_G(word);
1131 
1132 	return 0;
1133 }
1134 
1135 /**
1136  *	t4vf_read_rss_vi_config - read a VI's RSS configuration
1137  *	@adapter: the adapter
1138  *	@viid: Virtual Interface ID
1139  *	@config: pointer to host-native VI RSS Configuration buffer
1140  *
1141  *	Reads the Virtual Interface's RSS configuration information and
1142  *	translates it into CPU-native format.
1143  */
t4vf_read_rss_vi_config(struct adapter * adapter,unsigned int viid,union rss_vi_config * config)1144 int t4vf_read_rss_vi_config(struct adapter *adapter, unsigned int viid,
1145 			    union rss_vi_config *config)
1146 {
1147 	struct fw_rss_vi_config_cmd cmd, rpl;
1148 	int v;
1149 
1150 	memset(&cmd, 0, sizeof(cmd));
1151 	cmd.op_to_viid = cpu_to_be32(FW_CMD_OP_V(FW_RSS_VI_CONFIG_CMD) |
1152 				     FW_CMD_REQUEST_F |
1153 				     FW_CMD_READ_F |
1154 				     FW_RSS_VI_CONFIG_CMD_VIID(viid));
1155 	cmd.retval_len16 = cpu_to_be32(FW_LEN16(cmd));
1156 	v = t4vf_wr_mbox(adapter, &cmd, sizeof(cmd), &rpl);
1157 	if (v)
1158 		return v;
1159 
1160 	switch (adapter->params.rss.mode) {
1161 	case FW_RSS_GLB_CONFIG_CMD_MODE_BASICVIRTUAL: {
1162 		u32 word = be32_to_cpu(rpl.u.basicvirtual.defaultq_to_udpen);
1163 
1164 		config->basicvirtual.ip6fourtupen =
1165 			((word & FW_RSS_VI_CONFIG_CMD_IP6FOURTUPEN_F) != 0);
1166 		config->basicvirtual.ip6twotupen =
1167 			((word & FW_RSS_VI_CONFIG_CMD_IP6TWOTUPEN_F) != 0);
1168 		config->basicvirtual.ip4fourtupen =
1169 			((word & FW_RSS_VI_CONFIG_CMD_IP4FOURTUPEN_F) != 0);
1170 		config->basicvirtual.ip4twotupen =
1171 			((word & FW_RSS_VI_CONFIG_CMD_IP4TWOTUPEN_F) != 0);
1172 		config->basicvirtual.udpen =
1173 			((word & FW_RSS_VI_CONFIG_CMD_UDPEN_F) != 0);
1174 		config->basicvirtual.defaultq =
1175 			FW_RSS_VI_CONFIG_CMD_DEFAULTQ_G(word);
1176 		break;
1177 	}
1178 
1179 	default:
1180 		return -EINVAL;
1181 	}
1182 
1183 	return 0;
1184 }
1185 
1186 /**
1187  *	t4vf_write_rss_vi_config - write a VI's RSS configuration
1188  *	@adapter: the adapter
1189  *	@viid: Virtual Interface ID
1190  *	@config: pointer to host-native VI RSS Configuration buffer
1191  *
1192  *	Write the Virtual Interface's RSS configuration information
1193  *	(translating it into firmware-native format before writing).
1194  */
t4vf_write_rss_vi_config(struct adapter * adapter,unsigned int viid,union rss_vi_config * config)1195 int t4vf_write_rss_vi_config(struct adapter *adapter, unsigned int viid,
1196 			     union rss_vi_config *config)
1197 {
1198 	struct fw_rss_vi_config_cmd cmd, rpl;
1199 
1200 	memset(&cmd, 0, sizeof(cmd));
1201 	cmd.op_to_viid = cpu_to_be32(FW_CMD_OP_V(FW_RSS_VI_CONFIG_CMD) |
1202 				     FW_CMD_REQUEST_F |
1203 				     FW_CMD_WRITE_F |
1204 				     FW_RSS_VI_CONFIG_CMD_VIID(viid));
1205 	cmd.retval_len16 = cpu_to_be32(FW_LEN16(cmd));
1206 	switch (adapter->params.rss.mode) {
1207 	case FW_RSS_GLB_CONFIG_CMD_MODE_BASICVIRTUAL: {
1208 		u32 word = 0;
1209 
1210 		if (config->basicvirtual.ip6fourtupen)
1211 			word |= FW_RSS_VI_CONFIG_CMD_IP6FOURTUPEN_F;
1212 		if (config->basicvirtual.ip6twotupen)
1213 			word |= FW_RSS_VI_CONFIG_CMD_IP6TWOTUPEN_F;
1214 		if (config->basicvirtual.ip4fourtupen)
1215 			word |= FW_RSS_VI_CONFIG_CMD_IP4FOURTUPEN_F;
1216 		if (config->basicvirtual.ip4twotupen)
1217 			word |= FW_RSS_VI_CONFIG_CMD_IP4TWOTUPEN_F;
1218 		if (config->basicvirtual.udpen)
1219 			word |= FW_RSS_VI_CONFIG_CMD_UDPEN_F;
1220 		word |= FW_RSS_VI_CONFIG_CMD_DEFAULTQ_V(
1221 				config->basicvirtual.defaultq);
1222 		cmd.u.basicvirtual.defaultq_to_udpen = cpu_to_be32(word);
1223 		break;
1224 	}
1225 
1226 	default:
1227 		return -EINVAL;
1228 	}
1229 
1230 	return t4vf_wr_mbox(adapter, &cmd, sizeof(cmd), &rpl);
1231 }
1232 
1233 /**
1234  *	t4vf_config_rss_range - configure a portion of the RSS mapping table
1235  *	@adapter: the adapter
1236  *	@viid: Virtual Interface of RSS Table Slice
1237  *	@start: starting entry in the table to write
1238  *	@n: how many table entries to write
1239  *	@rspq: values for the "Response Queue" (Ingress Queue) lookup table
1240  *	@nrspq: number of values in @rspq
1241  *
1242  *	Programs the selected part of the VI's RSS mapping table with the
1243  *	provided values.  If @nrspq < @n the supplied values are used repeatedly
1244  *	until the full table range is populated.
1245  *
1246  *	The caller must ensure the values in @rspq are in the range 0..1023.
1247  */
t4vf_config_rss_range(struct adapter * adapter,unsigned int viid,int start,int n,const u16 * rspq,int nrspq)1248 int t4vf_config_rss_range(struct adapter *adapter, unsigned int viid,
1249 			  int start, int n, const u16 *rspq, int nrspq)
1250 {
1251 	const u16 *rsp = rspq;
1252 	const u16 *rsp_end = rspq+nrspq;
1253 	struct fw_rss_ind_tbl_cmd cmd;
1254 
1255 	/*
1256 	 * Initialize firmware command template to write the RSS table.
1257 	 */
1258 	memset(&cmd, 0, sizeof(cmd));
1259 	cmd.op_to_viid = cpu_to_be32(FW_CMD_OP_V(FW_RSS_IND_TBL_CMD) |
1260 				     FW_CMD_REQUEST_F |
1261 				     FW_CMD_WRITE_F |
1262 				     FW_RSS_IND_TBL_CMD_VIID_V(viid));
1263 	cmd.retval_len16 = cpu_to_be32(FW_LEN16(cmd));
1264 
1265 	/*
1266 	 * Each firmware RSS command can accommodate up to 32 RSS Ingress
1267 	 * Queue Identifiers.  These Ingress Queue IDs are packed three to
1268 	 * a 32-bit word as 10-bit values with the upper remaining 2 bits
1269 	 * reserved.
1270 	 */
1271 	while (n > 0) {
1272 		__be32 *qp = &cmd.iq0_to_iq2;
1273 		int nq = min(n, 32);
1274 		int ret;
1275 
1276 		/*
1277 		 * Set up the firmware RSS command header to send the next
1278 		 * "nq" Ingress Queue IDs to the firmware.
1279 		 */
1280 		cmd.niqid = cpu_to_be16(nq);
1281 		cmd.startidx = cpu_to_be16(start);
1282 
1283 		/*
1284 		 * "nq" more done for the start of the next loop.
1285 		 */
1286 		start += nq;
1287 		n -= nq;
1288 
1289 		/*
1290 		 * While there are still Ingress Queue IDs to stuff into the
1291 		 * current firmware RSS command, retrieve them from the
1292 		 * Ingress Queue ID array and insert them into the command.
1293 		 */
1294 		while (nq > 0) {
1295 			/*
1296 			 * Grab up to the next 3 Ingress Queue IDs (wrapping
1297 			 * around the Ingress Queue ID array if necessary) and
1298 			 * insert them into the firmware RSS command at the
1299 			 * current 3-tuple position within the commad.
1300 			 */
1301 			u16 qbuf[3];
1302 			u16 *qbp = qbuf;
1303 			int nqbuf = min(3, nq);
1304 
1305 			nq -= nqbuf;
1306 			qbuf[0] = qbuf[1] = qbuf[2] = 0;
1307 			while (nqbuf) {
1308 				nqbuf--;
1309 				*qbp++ = *rsp++;
1310 				if (rsp >= rsp_end)
1311 					rsp = rspq;
1312 			}
1313 			*qp++ = cpu_to_be32(FW_RSS_IND_TBL_CMD_IQ0_V(qbuf[0]) |
1314 					    FW_RSS_IND_TBL_CMD_IQ1_V(qbuf[1]) |
1315 					    FW_RSS_IND_TBL_CMD_IQ2_V(qbuf[2]));
1316 		}
1317 
1318 		/*
1319 		 * Send this portion of the RRS table update to the firmware;
1320 		 * bail out on any errors.
1321 		 */
1322 		ret = t4vf_wr_mbox(adapter, &cmd, sizeof(cmd), NULL);
1323 		if (ret)
1324 			return ret;
1325 	}
1326 	return 0;
1327 }
1328 
1329 /**
1330  *	t4vf_alloc_vi - allocate a virtual interface on a port
1331  *	@adapter: the adapter
1332  *	@port_id: physical port associated with the VI
1333  *
1334  *	Allocate a new Virtual Interface and bind it to the indicated
1335  *	physical port.  Return the new Virtual Interface Identifier on
1336  *	success, or a [negative] error number on failure.
1337  */
t4vf_alloc_vi(struct adapter * adapter,int port_id)1338 int t4vf_alloc_vi(struct adapter *adapter, int port_id)
1339 {
1340 	struct fw_vi_cmd cmd, rpl;
1341 	int v;
1342 
1343 	/*
1344 	 * Execute a VI command to allocate Virtual Interface and return its
1345 	 * VIID.
1346 	 */
1347 	memset(&cmd, 0, sizeof(cmd));
1348 	cmd.op_to_vfn = cpu_to_be32(FW_CMD_OP_V(FW_VI_CMD) |
1349 				    FW_CMD_REQUEST_F |
1350 				    FW_CMD_WRITE_F |
1351 				    FW_CMD_EXEC_F);
1352 	cmd.alloc_to_len16 = cpu_to_be32(FW_LEN16(cmd) |
1353 					 FW_VI_CMD_ALLOC_F);
1354 	cmd.portid_pkd = FW_VI_CMD_PORTID_V(port_id);
1355 	v = t4vf_wr_mbox(adapter, &cmd, sizeof(cmd), &rpl);
1356 	if (v)
1357 		return v;
1358 
1359 	return FW_VI_CMD_VIID_G(be16_to_cpu(rpl.type_viid));
1360 }
1361 
1362 /**
1363  *	t4vf_free_vi -- free a virtual interface
1364  *	@adapter: the adapter
1365  *	@viid: the virtual interface identifier
1366  *
1367  *	Free a previously allocated Virtual Interface.  Return an error on
1368  *	failure.
1369  */
t4vf_free_vi(struct adapter * adapter,int viid)1370 int t4vf_free_vi(struct adapter *adapter, int viid)
1371 {
1372 	struct fw_vi_cmd cmd;
1373 
1374 	/*
1375 	 * Execute a VI command to free the Virtual Interface.
1376 	 */
1377 	memset(&cmd, 0, sizeof(cmd));
1378 	cmd.op_to_vfn = cpu_to_be32(FW_CMD_OP_V(FW_VI_CMD) |
1379 				    FW_CMD_REQUEST_F |
1380 				    FW_CMD_EXEC_F);
1381 	cmd.alloc_to_len16 = cpu_to_be32(FW_LEN16(cmd) |
1382 					 FW_VI_CMD_FREE_F);
1383 	cmd.type_viid = cpu_to_be16(FW_VI_CMD_VIID_V(viid));
1384 	return t4vf_wr_mbox(adapter, &cmd, sizeof(cmd), NULL);
1385 }
1386 
1387 /**
1388  *	t4vf_enable_vi - enable/disable a virtual interface
1389  *	@adapter: the adapter
1390  *	@viid: the Virtual Interface ID
1391  *	@rx_en: 1=enable Rx, 0=disable Rx
1392  *	@tx_en: 1=enable Tx, 0=disable Tx
1393  *
1394  *	Enables/disables a virtual interface.
1395  */
t4vf_enable_vi(struct adapter * adapter,unsigned int viid,bool rx_en,bool tx_en)1396 int t4vf_enable_vi(struct adapter *adapter, unsigned int viid,
1397 		   bool rx_en, bool tx_en)
1398 {
1399 	struct fw_vi_enable_cmd cmd;
1400 
1401 	memset(&cmd, 0, sizeof(cmd));
1402 	cmd.op_to_viid = cpu_to_be32(FW_CMD_OP_V(FW_VI_ENABLE_CMD) |
1403 				     FW_CMD_REQUEST_F |
1404 				     FW_CMD_EXEC_F |
1405 				     FW_VI_ENABLE_CMD_VIID_V(viid));
1406 	cmd.ien_to_len16 = cpu_to_be32(FW_VI_ENABLE_CMD_IEN_V(rx_en) |
1407 				       FW_VI_ENABLE_CMD_EEN_V(tx_en) |
1408 				       FW_LEN16(cmd));
1409 	return t4vf_wr_mbox(adapter, &cmd, sizeof(cmd), NULL);
1410 }
1411 
1412 /**
1413  *	t4vf_enable_pi - enable/disable a Port's virtual interface
1414  *	@adapter: the adapter
1415  *	@pi: the Port Information structure
1416  *	@rx_en: 1=enable Rx, 0=disable Rx
1417  *	@tx_en: 1=enable Tx, 0=disable Tx
1418  *
1419  *	Enables/disables a Port's virtual interface.  If the Virtual
1420  *	Interface enable/disable operation is successful, we notify the
1421  *	OS-specific code of a potential Link Status change via the OS Contract
1422  *	API t4vf_os_link_changed().
1423  */
t4vf_enable_pi(struct adapter * adapter,struct port_info * pi,bool rx_en,bool tx_en)1424 int t4vf_enable_pi(struct adapter *adapter, struct port_info *pi,
1425 		   bool rx_en, bool tx_en)
1426 {
1427 	int ret = t4vf_enable_vi(adapter, pi->viid, rx_en, tx_en);
1428 
1429 	if (ret)
1430 		return ret;
1431 	t4vf_os_link_changed(adapter, pi->pidx,
1432 			     rx_en && tx_en && pi->link_cfg.link_ok);
1433 	return 0;
1434 }
1435 
1436 /**
1437  *	t4vf_identify_port - identify a VI's port by blinking its LED
1438  *	@adapter: the adapter
1439  *	@viid: the Virtual Interface ID
1440  *	@nblinks: how many times to blink LED at 2.5 Hz
1441  *
1442  *	Identifies a VI's port by blinking its LED.
1443  */
t4vf_identify_port(struct adapter * adapter,unsigned int viid,unsigned int nblinks)1444 int t4vf_identify_port(struct adapter *adapter, unsigned int viid,
1445 		       unsigned int nblinks)
1446 {
1447 	struct fw_vi_enable_cmd cmd;
1448 
1449 	memset(&cmd, 0, sizeof(cmd));
1450 	cmd.op_to_viid = cpu_to_be32(FW_CMD_OP_V(FW_VI_ENABLE_CMD) |
1451 				     FW_CMD_REQUEST_F |
1452 				     FW_CMD_EXEC_F |
1453 				     FW_VI_ENABLE_CMD_VIID_V(viid));
1454 	cmd.ien_to_len16 = cpu_to_be32(FW_VI_ENABLE_CMD_LED_F |
1455 				       FW_LEN16(cmd));
1456 	cmd.blinkdur = cpu_to_be16(nblinks);
1457 	return t4vf_wr_mbox(adapter, &cmd, sizeof(cmd), NULL);
1458 }
1459 
1460 /**
1461  *	t4vf_set_rxmode - set Rx properties of a virtual interface
1462  *	@adapter: the adapter
1463  *	@viid: the VI id
1464  *	@mtu: the new MTU or -1 for no change
1465  *	@promisc: 1 to enable promiscuous mode, 0 to disable it, -1 no change
1466  *	@all_multi: 1 to enable all-multi mode, 0 to disable it, -1 no change
1467  *	@bcast: 1 to enable broadcast Rx, 0 to disable it, -1 no change
1468  *	@vlanex: 1 to enable hardware VLAN Tag extraction, 0 to disable it,
1469  *		-1 no change
1470  *
1471  *	Sets Rx properties of a virtual interface.
1472  */
t4vf_set_rxmode(struct adapter * adapter,unsigned int viid,int mtu,int promisc,int all_multi,int bcast,int vlanex,bool sleep_ok)1473 int t4vf_set_rxmode(struct adapter *adapter, unsigned int viid,
1474 		    int mtu, int promisc, int all_multi, int bcast, int vlanex,
1475 		    bool sleep_ok)
1476 {
1477 	struct fw_vi_rxmode_cmd cmd;
1478 
1479 	/* convert to FW values */
1480 	if (mtu < 0)
1481 		mtu = FW_VI_RXMODE_CMD_MTU_M;
1482 	if (promisc < 0)
1483 		promisc = FW_VI_RXMODE_CMD_PROMISCEN_M;
1484 	if (all_multi < 0)
1485 		all_multi = FW_VI_RXMODE_CMD_ALLMULTIEN_M;
1486 	if (bcast < 0)
1487 		bcast = FW_VI_RXMODE_CMD_BROADCASTEN_M;
1488 	if (vlanex < 0)
1489 		vlanex = FW_VI_RXMODE_CMD_VLANEXEN_M;
1490 
1491 	memset(&cmd, 0, sizeof(cmd));
1492 	cmd.op_to_viid = cpu_to_be32(FW_CMD_OP_V(FW_VI_RXMODE_CMD) |
1493 				     FW_CMD_REQUEST_F |
1494 				     FW_CMD_WRITE_F |
1495 				     FW_VI_RXMODE_CMD_VIID_V(viid));
1496 	cmd.retval_len16 = cpu_to_be32(FW_LEN16(cmd));
1497 	cmd.mtu_to_vlanexen =
1498 		cpu_to_be32(FW_VI_RXMODE_CMD_MTU_V(mtu) |
1499 			    FW_VI_RXMODE_CMD_PROMISCEN_V(promisc) |
1500 			    FW_VI_RXMODE_CMD_ALLMULTIEN_V(all_multi) |
1501 			    FW_VI_RXMODE_CMD_BROADCASTEN_V(bcast) |
1502 			    FW_VI_RXMODE_CMD_VLANEXEN_V(vlanex));
1503 	return t4vf_wr_mbox_core(adapter, &cmd, sizeof(cmd), NULL, sleep_ok);
1504 }
1505 
1506 /**
1507  *	t4vf_alloc_mac_filt - allocates exact-match filters for MAC addresses
1508  *	@adapter: the adapter
1509  *	@viid: the Virtual Interface Identifier
1510  *	@free: if true any existing filters for this VI id are first removed
1511  *	@naddr: the number of MAC addresses to allocate filters for (up to 7)
1512  *	@addr: the MAC address(es)
1513  *	@idx: where to store the index of each allocated filter
1514  *	@hash: pointer to hash address filter bitmap
1515  *	@sleep_ok: call is allowed to sleep
1516  *
1517  *	Allocates an exact-match filter for each of the supplied addresses and
1518  *	sets it to the corresponding address.  If @idx is not %NULL it should
1519  *	have at least @naddr entries, each of which will be set to the index of
1520  *	the filter allocated for the corresponding MAC address.  If a filter
1521  *	could not be allocated for an address its index is set to 0xffff.
1522  *	If @hash is not %NULL addresses that fail to allocate an exact filter
1523  *	are hashed and update the hash filter bitmap pointed at by @hash.
1524  *
1525  *	Returns a negative error number or the number of filters allocated.
1526  */
t4vf_alloc_mac_filt(struct adapter * adapter,unsigned int viid,bool free,unsigned int naddr,const u8 ** addr,u16 * idx,u64 * hash,bool sleep_ok)1527 int t4vf_alloc_mac_filt(struct adapter *adapter, unsigned int viid, bool free,
1528 			unsigned int naddr, const u8 **addr, u16 *idx,
1529 			u64 *hash, bool sleep_ok)
1530 {
1531 	int offset, ret = 0;
1532 	unsigned nfilters = 0;
1533 	unsigned int rem = naddr;
1534 	struct fw_vi_mac_cmd cmd, rpl;
1535 	unsigned int max_naddr = adapter->params.arch.mps_tcam_size;
1536 
1537 	if (naddr > max_naddr)
1538 		return -EINVAL;
1539 
1540 	for (offset = 0; offset < naddr; /**/) {
1541 		unsigned int fw_naddr = (rem < ARRAY_SIZE(cmd.u.exact)
1542 					 ? rem
1543 					 : ARRAY_SIZE(cmd.u.exact));
1544 		size_t len16 = DIV_ROUND_UP(offsetof(struct fw_vi_mac_cmd,
1545 						     u.exact[fw_naddr]), 16);
1546 		struct fw_vi_mac_exact *p;
1547 		int i;
1548 
1549 		memset(&cmd, 0, sizeof(cmd));
1550 		cmd.op_to_viid = cpu_to_be32(FW_CMD_OP_V(FW_VI_MAC_CMD) |
1551 					     FW_CMD_REQUEST_F |
1552 					     FW_CMD_WRITE_F |
1553 					     (free ? FW_CMD_EXEC_F : 0) |
1554 					     FW_VI_MAC_CMD_VIID_V(viid));
1555 		cmd.freemacs_to_len16 =
1556 			cpu_to_be32(FW_VI_MAC_CMD_FREEMACS_V(free) |
1557 				    FW_CMD_LEN16_V(len16));
1558 
1559 		for (i = 0, p = cmd.u.exact; i < fw_naddr; i++, p++) {
1560 			p->valid_to_idx = cpu_to_be16(
1561 				FW_VI_MAC_CMD_VALID_F |
1562 				FW_VI_MAC_CMD_IDX_V(FW_VI_MAC_ADD_MAC));
1563 			memcpy(p->macaddr, addr[offset+i], sizeof(p->macaddr));
1564 		}
1565 
1566 
1567 		ret = t4vf_wr_mbox_core(adapter, &cmd, sizeof(cmd), &rpl,
1568 					sleep_ok);
1569 		if (ret && ret != -ENOMEM)
1570 			break;
1571 
1572 		for (i = 0, p = rpl.u.exact; i < fw_naddr; i++, p++) {
1573 			u16 index = FW_VI_MAC_CMD_IDX_G(
1574 				be16_to_cpu(p->valid_to_idx));
1575 
1576 			if (idx)
1577 				idx[offset+i] =
1578 					(index >= max_naddr
1579 					 ? 0xffff
1580 					 : index);
1581 			if (index < max_naddr)
1582 				nfilters++;
1583 			else if (hash)
1584 				*hash |= (1ULL << hash_mac_addr(addr[offset+i]));
1585 		}
1586 
1587 		free = false;
1588 		offset += fw_naddr;
1589 		rem -= fw_naddr;
1590 	}
1591 
1592 	/*
1593 	 * If there were no errors or we merely ran out of room in our MAC
1594 	 * address arena, return the number of filters actually written.
1595 	 */
1596 	if (ret == 0 || ret == -ENOMEM)
1597 		ret = nfilters;
1598 	return ret;
1599 }
1600 
1601 /**
1602  *	t4vf_free_mac_filt - frees exact-match filters of given MAC addresses
1603  *	@adapter: the adapter
1604  *	@viid: the VI id
1605  *	@naddr: the number of MAC addresses to allocate filters for (up to 7)
1606  *	@addr: the MAC address(es)
1607  *	@sleep_ok: call is allowed to sleep
1608  *
1609  *	Frees the exact-match filter for each of the supplied addresses
1610  *
1611  *	Returns a negative error number or the number of filters freed.
1612  */
t4vf_free_mac_filt(struct adapter * adapter,unsigned int viid,unsigned int naddr,const u8 ** addr,bool sleep_ok)1613 int t4vf_free_mac_filt(struct adapter *adapter, unsigned int viid,
1614 		       unsigned int naddr, const u8 **addr, bool sleep_ok)
1615 {
1616 	int offset, ret = 0;
1617 	struct fw_vi_mac_cmd cmd;
1618 	unsigned int nfilters = 0;
1619 	unsigned int max_naddr = adapter->params.arch.mps_tcam_size;
1620 	unsigned int rem = naddr;
1621 
1622 	if (naddr > max_naddr)
1623 		return -EINVAL;
1624 
1625 	for (offset = 0; offset < (int)naddr ; /**/) {
1626 		unsigned int fw_naddr = (rem < ARRAY_SIZE(cmd.u.exact) ?
1627 					 rem : ARRAY_SIZE(cmd.u.exact));
1628 		size_t len16 = DIV_ROUND_UP(offsetof(struct fw_vi_mac_cmd,
1629 						     u.exact[fw_naddr]), 16);
1630 		struct fw_vi_mac_exact *p;
1631 		int i;
1632 
1633 		memset(&cmd, 0, sizeof(cmd));
1634 		cmd.op_to_viid = cpu_to_be32(FW_CMD_OP_V(FW_VI_MAC_CMD) |
1635 				     FW_CMD_REQUEST_F |
1636 				     FW_CMD_WRITE_F |
1637 				     FW_CMD_EXEC_V(0) |
1638 				     FW_VI_MAC_CMD_VIID_V(viid));
1639 		cmd.freemacs_to_len16 =
1640 				cpu_to_be32(FW_VI_MAC_CMD_FREEMACS_V(0) |
1641 					    FW_CMD_LEN16_V(len16));
1642 
1643 		for (i = 0, p = cmd.u.exact; i < (int)fw_naddr; i++, p++) {
1644 			p->valid_to_idx = cpu_to_be16(
1645 				FW_VI_MAC_CMD_VALID_F |
1646 				FW_VI_MAC_CMD_IDX_V(FW_VI_MAC_MAC_BASED_FREE));
1647 			memcpy(p->macaddr, addr[offset+i], sizeof(p->macaddr));
1648 		}
1649 
1650 		ret = t4vf_wr_mbox_core(adapter, &cmd, sizeof(cmd), &cmd,
1651 					sleep_ok);
1652 		if (ret)
1653 			break;
1654 
1655 		for (i = 0, p = cmd.u.exact; i < fw_naddr; i++, p++) {
1656 			u16 index = FW_VI_MAC_CMD_IDX_G(
1657 						be16_to_cpu(p->valid_to_idx));
1658 
1659 			if (index < max_naddr)
1660 				nfilters++;
1661 		}
1662 
1663 		offset += fw_naddr;
1664 		rem -= fw_naddr;
1665 	}
1666 
1667 	if (ret == 0)
1668 		ret = nfilters;
1669 	return ret;
1670 }
1671 
1672 /**
1673  *	t4vf_change_mac - modifies the exact-match filter for a MAC address
1674  *	@adapter: the adapter
1675  *	@viid: the Virtual Interface ID
1676  *	@idx: index of existing filter for old value of MAC address, or -1
1677  *	@addr: the new MAC address value
1678  *	@persist: if idx < 0, the new MAC allocation should be persistent
1679  *
1680  *	Modifies an exact-match filter and sets it to the new MAC address.
1681  *	Note that in general it is not possible to modify the value of a given
1682  *	filter so the generic way to modify an address filter is to free the
1683  *	one being used by the old address value and allocate a new filter for
1684  *	the new address value.  @idx can be -1 if the address is a new
1685  *	addition.
1686  *
1687  *	Returns a negative error number or the index of the filter with the new
1688  *	MAC value.
1689  */
t4vf_change_mac(struct adapter * adapter,unsigned int viid,int idx,const u8 * addr,bool persist)1690 int t4vf_change_mac(struct adapter *adapter, unsigned int viid,
1691 		    int idx, const u8 *addr, bool persist)
1692 {
1693 	int ret;
1694 	struct fw_vi_mac_cmd cmd, rpl;
1695 	struct fw_vi_mac_exact *p = &cmd.u.exact[0];
1696 	size_t len16 = DIV_ROUND_UP(offsetof(struct fw_vi_mac_cmd,
1697 					     u.exact[1]), 16);
1698 	unsigned int max_mac_addr = adapter->params.arch.mps_tcam_size;
1699 
1700 	/*
1701 	 * If this is a new allocation, determine whether it should be
1702 	 * persistent (across a "freemacs" operation) or not.
1703 	 */
1704 	if (idx < 0)
1705 		idx = persist ? FW_VI_MAC_ADD_PERSIST_MAC : FW_VI_MAC_ADD_MAC;
1706 
1707 	memset(&cmd, 0, sizeof(cmd));
1708 	cmd.op_to_viid = cpu_to_be32(FW_CMD_OP_V(FW_VI_MAC_CMD) |
1709 				     FW_CMD_REQUEST_F |
1710 				     FW_CMD_WRITE_F |
1711 				     FW_VI_MAC_CMD_VIID_V(viid));
1712 	cmd.freemacs_to_len16 = cpu_to_be32(FW_CMD_LEN16_V(len16));
1713 	p->valid_to_idx = cpu_to_be16(FW_VI_MAC_CMD_VALID_F |
1714 				      FW_VI_MAC_CMD_IDX_V(idx));
1715 	memcpy(p->macaddr, addr, sizeof(p->macaddr));
1716 
1717 	ret = t4vf_wr_mbox(adapter, &cmd, sizeof(cmd), &rpl);
1718 	if (ret == 0) {
1719 		p = &rpl.u.exact[0];
1720 		ret = FW_VI_MAC_CMD_IDX_G(be16_to_cpu(p->valid_to_idx));
1721 		if (ret >= max_mac_addr)
1722 			ret = -ENOMEM;
1723 	}
1724 	return ret;
1725 }
1726 
1727 /**
1728  *	t4vf_set_addr_hash - program the MAC inexact-match hash filter
1729  *	@adapter: the adapter
1730  *	@viid: the Virtual Interface Identifier
1731  *	@ucast: whether the hash filter should also match unicast addresses
1732  *	@vec: the value to be written to the hash filter
1733  *	@sleep_ok: call is allowed to sleep
1734  *
1735  *	Sets the 64-bit inexact-match hash filter for a virtual interface.
1736  */
t4vf_set_addr_hash(struct adapter * adapter,unsigned int viid,bool ucast,u64 vec,bool sleep_ok)1737 int t4vf_set_addr_hash(struct adapter *adapter, unsigned int viid,
1738 		       bool ucast, u64 vec, bool sleep_ok)
1739 {
1740 	struct fw_vi_mac_cmd cmd;
1741 	size_t len16 = DIV_ROUND_UP(offsetof(struct fw_vi_mac_cmd,
1742 					     u.exact[0]), 16);
1743 
1744 	memset(&cmd, 0, sizeof(cmd));
1745 	cmd.op_to_viid = cpu_to_be32(FW_CMD_OP_V(FW_VI_MAC_CMD) |
1746 				     FW_CMD_REQUEST_F |
1747 				     FW_CMD_WRITE_F |
1748 				     FW_VI_ENABLE_CMD_VIID_V(viid));
1749 	cmd.freemacs_to_len16 = cpu_to_be32(FW_VI_MAC_CMD_HASHVECEN_F |
1750 					    FW_VI_MAC_CMD_HASHUNIEN_V(ucast) |
1751 					    FW_CMD_LEN16_V(len16));
1752 	cmd.u.hash.hashvec = cpu_to_be64(vec);
1753 	return t4vf_wr_mbox_core(adapter, &cmd, sizeof(cmd), NULL, sleep_ok);
1754 }
1755 
1756 /**
1757  *	t4vf_get_port_stats - collect "port" statistics
1758  *	@adapter: the adapter
1759  *	@pidx: the port index
1760  *	@s: the stats structure to fill
1761  *
1762  *	Collect statistics for the "port"'s Virtual Interface.
1763  */
t4vf_get_port_stats(struct adapter * adapter,int pidx,struct t4vf_port_stats * s)1764 int t4vf_get_port_stats(struct adapter *adapter, int pidx,
1765 			struct t4vf_port_stats *s)
1766 {
1767 	struct port_info *pi = adap2pinfo(adapter, pidx);
1768 	struct fw_vi_stats_vf fwstats;
1769 	unsigned int rem = VI_VF_NUM_STATS;
1770 	__be64 *fwsp = (__be64 *)&fwstats;
1771 
1772 	/*
1773 	 * Grab the Virtual Interface statistics a chunk at a time via mailbox
1774 	 * commands.  We could use a Work Request and get all of them at once
1775 	 * but that's an asynchronous interface which is awkward to use.
1776 	 */
1777 	while (rem) {
1778 		unsigned int ix = VI_VF_NUM_STATS - rem;
1779 		unsigned int nstats = min(6U, rem);
1780 		struct fw_vi_stats_cmd cmd, rpl;
1781 		size_t len = (offsetof(struct fw_vi_stats_cmd, u) +
1782 			      sizeof(struct fw_vi_stats_ctl));
1783 		size_t len16 = DIV_ROUND_UP(len, 16);
1784 		int ret;
1785 
1786 		memset(&cmd, 0, sizeof(cmd));
1787 		cmd.op_to_viid = cpu_to_be32(FW_CMD_OP_V(FW_VI_STATS_CMD) |
1788 					     FW_VI_STATS_CMD_VIID_V(pi->viid) |
1789 					     FW_CMD_REQUEST_F |
1790 					     FW_CMD_READ_F);
1791 		cmd.retval_len16 = cpu_to_be32(FW_CMD_LEN16_V(len16));
1792 		cmd.u.ctl.nstats_ix =
1793 			cpu_to_be16(FW_VI_STATS_CMD_IX_V(ix) |
1794 				    FW_VI_STATS_CMD_NSTATS_V(nstats));
1795 		ret = t4vf_wr_mbox_ns(adapter, &cmd, len, &rpl);
1796 		if (ret)
1797 			return ret;
1798 
1799 		memcpy(fwsp, &rpl.u.ctl.stat0, sizeof(__be64) * nstats);
1800 
1801 		rem -= nstats;
1802 		fwsp += nstats;
1803 	}
1804 
1805 	/*
1806 	 * Translate firmware statistics into host native statistics.
1807 	 */
1808 	s->tx_bcast_bytes = be64_to_cpu(fwstats.tx_bcast_bytes);
1809 	s->tx_bcast_frames = be64_to_cpu(fwstats.tx_bcast_frames);
1810 	s->tx_mcast_bytes = be64_to_cpu(fwstats.tx_mcast_bytes);
1811 	s->tx_mcast_frames = be64_to_cpu(fwstats.tx_mcast_frames);
1812 	s->tx_ucast_bytes = be64_to_cpu(fwstats.tx_ucast_bytes);
1813 	s->tx_ucast_frames = be64_to_cpu(fwstats.tx_ucast_frames);
1814 	s->tx_drop_frames = be64_to_cpu(fwstats.tx_drop_frames);
1815 	s->tx_offload_bytes = be64_to_cpu(fwstats.tx_offload_bytes);
1816 	s->tx_offload_frames = be64_to_cpu(fwstats.tx_offload_frames);
1817 
1818 	s->rx_bcast_bytes = be64_to_cpu(fwstats.rx_bcast_bytes);
1819 	s->rx_bcast_frames = be64_to_cpu(fwstats.rx_bcast_frames);
1820 	s->rx_mcast_bytes = be64_to_cpu(fwstats.rx_mcast_bytes);
1821 	s->rx_mcast_frames = be64_to_cpu(fwstats.rx_mcast_frames);
1822 	s->rx_ucast_bytes = be64_to_cpu(fwstats.rx_ucast_bytes);
1823 	s->rx_ucast_frames = be64_to_cpu(fwstats.rx_ucast_frames);
1824 
1825 	s->rx_err_frames = be64_to_cpu(fwstats.rx_err_frames);
1826 
1827 	return 0;
1828 }
1829 
1830 /**
1831  *	t4vf_iq_free - free an ingress queue and its free lists
1832  *	@adapter: the adapter
1833  *	@iqtype: the ingress queue type (FW_IQ_TYPE_FL_INT_CAP, etc.)
1834  *	@iqid: ingress queue ID
1835  *	@fl0id: FL0 queue ID or 0xffff if no attached FL0
1836  *	@fl1id: FL1 queue ID or 0xffff if no attached FL1
1837  *
1838  *	Frees an ingress queue and its associated free lists, if any.
1839  */
t4vf_iq_free(struct adapter * adapter,unsigned int iqtype,unsigned int iqid,unsigned int fl0id,unsigned int fl1id)1840 int t4vf_iq_free(struct adapter *adapter, unsigned int iqtype,
1841 		 unsigned int iqid, unsigned int fl0id, unsigned int fl1id)
1842 {
1843 	struct fw_iq_cmd cmd;
1844 
1845 	memset(&cmd, 0, sizeof(cmd));
1846 	cmd.op_to_vfn = cpu_to_be32(FW_CMD_OP_V(FW_IQ_CMD) |
1847 				    FW_CMD_REQUEST_F |
1848 				    FW_CMD_EXEC_F);
1849 	cmd.alloc_to_len16 = cpu_to_be32(FW_IQ_CMD_FREE_F |
1850 					 FW_LEN16(cmd));
1851 	cmd.type_to_iqandstindex =
1852 		cpu_to_be32(FW_IQ_CMD_TYPE_V(iqtype));
1853 
1854 	cmd.iqid = cpu_to_be16(iqid);
1855 	cmd.fl0id = cpu_to_be16(fl0id);
1856 	cmd.fl1id = cpu_to_be16(fl1id);
1857 	return t4vf_wr_mbox(adapter, &cmd, sizeof(cmd), NULL);
1858 }
1859 
1860 /**
1861  *	t4vf_eth_eq_free - free an Ethernet egress queue
1862  *	@adapter: the adapter
1863  *	@eqid: egress queue ID
1864  *
1865  *	Frees an Ethernet egress queue.
1866  */
t4vf_eth_eq_free(struct adapter * adapter,unsigned int eqid)1867 int t4vf_eth_eq_free(struct adapter *adapter, unsigned int eqid)
1868 {
1869 	struct fw_eq_eth_cmd cmd;
1870 
1871 	memset(&cmd, 0, sizeof(cmd));
1872 	cmd.op_to_vfn = cpu_to_be32(FW_CMD_OP_V(FW_EQ_ETH_CMD) |
1873 				    FW_CMD_REQUEST_F |
1874 				    FW_CMD_EXEC_F);
1875 	cmd.alloc_to_len16 = cpu_to_be32(FW_EQ_ETH_CMD_FREE_F |
1876 					 FW_LEN16(cmd));
1877 	cmd.eqid_pkd = cpu_to_be32(FW_EQ_ETH_CMD_EQID_V(eqid));
1878 	return t4vf_wr_mbox(adapter, &cmd, sizeof(cmd), NULL);
1879 }
1880 
1881 /**
1882  *	t4vf_link_down_rc_str - return a string for a Link Down Reason Code
1883  *	@link_down_rc: Link Down Reason Code
1884  *
1885  *	Returns a string representation of the Link Down Reason Code.
1886  */
t4vf_link_down_rc_str(unsigned char link_down_rc)1887 static const char *t4vf_link_down_rc_str(unsigned char link_down_rc)
1888 {
1889 	static const char * const reason[] = {
1890 		"Link Down",
1891 		"Remote Fault",
1892 		"Auto-negotiation Failure",
1893 		"Reserved",
1894 		"Insufficient Airflow",
1895 		"Unable To Determine Reason",
1896 		"No RX Signal Detected",
1897 		"Reserved",
1898 	};
1899 
1900 	if (link_down_rc >= ARRAY_SIZE(reason))
1901 		return "Bad Reason Code";
1902 
1903 	return reason[link_down_rc];
1904 }
1905 
1906 /**
1907  *	t4vf_handle_get_port_info - process a FW reply message
1908  *	@pi: the port info
1909  *	@rpl: start of the FW message
1910  *
1911  *	Processes a GET_PORT_INFO FW reply message.
1912  */
t4vf_handle_get_port_info(struct port_info * pi,const struct fw_port_cmd * cmd)1913 static void t4vf_handle_get_port_info(struct port_info *pi,
1914 				      const struct fw_port_cmd *cmd)
1915 {
1916 	fw_port_cap32_t pcaps, acaps, lpacaps, linkattr;
1917 	struct link_config *lc = &pi->link_cfg;
1918 	struct adapter *adapter = pi->adapter;
1919 	unsigned int speed, fc, fec, adv_fc;
1920 	enum fw_port_module_type mod_type;
1921 	int action, link_ok, linkdnrc;
1922 	enum fw_port_type port_type;
1923 
1924 	/* Extract the various fields from the Port Information message. */
1925 	action = FW_PORT_CMD_ACTION_G(be32_to_cpu(cmd->action_to_len16));
1926 	switch (action) {
1927 	case FW_PORT_ACTION_GET_PORT_INFO: {
1928 		u32 lstatus = be32_to_cpu(cmd->u.info.lstatus_to_modtype);
1929 
1930 		link_ok = (lstatus & FW_PORT_CMD_LSTATUS_F) != 0;
1931 		linkdnrc = FW_PORT_CMD_LINKDNRC_G(lstatus);
1932 		port_type = FW_PORT_CMD_PTYPE_G(lstatus);
1933 		mod_type = FW_PORT_CMD_MODTYPE_G(lstatus);
1934 		pcaps = fwcaps16_to_caps32(be16_to_cpu(cmd->u.info.pcap));
1935 		acaps = fwcaps16_to_caps32(be16_to_cpu(cmd->u.info.acap));
1936 		lpacaps = fwcaps16_to_caps32(be16_to_cpu(cmd->u.info.lpacap));
1937 
1938 		/* Unfortunately the format of the Link Status in the old
1939 		 * 16-bit Port Information message isn't the same as the
1940 		 * 16-bit Port Capabilities bitfield used everywhere else ...
1941 		 */
1942 		linkattr = 0;
1943 		if (lstatus & FW_PORT_CMD_RXPAUSE_F)
1944 			linkattr |= FW_PORT_CAP32_FC_RX;
1945 		if (lstatus & FW_PORT_CMD_TXPAUSE_F)
1946 			linkattr |= FW_PORT_CAP32_FC_TX;
1947 		if (lstatus & FW_PORT_CMD_LSPEED_V(FW_PORT_CAP_SPEED_100M))
1948 			linkattr |= FW_PORT_CAP32_SPEED_100M;
1949 		if (lstatus & FW_PORT_CMD_LSPEED_V(FW_PORT_CAP_SPEED_1G))
1950 			linkattr |= FW_PORT_CAP32_SPEED_1G;
1951 		if (lstatus & FW_PORT_CMD_LSPEED_V(FW_PORT_CAP_SPEED_10G))
1952 			linkattr |= FW_PORT_CAP32_SPEED_10G;
1953 		if (lstatus & FW_PORT_CMD_LSPEED_V(FW_PORT_CAP_SPEED_25G))
1954 			linkattr |= FW_PORT_CAP32_SPEED_25G;
1955 		if (lstatus & FW_PORT_CMD_LSPEED_V(FW_PORT_CAP_SPEED_40G))
1956 			linkattr |= FW_PORT_CAP32_SPEED_40G;
1957 		if (lstatus & FW_PORT_CMD_LSPEED_V(FW_PORT_CAP_SPEED_100G))
1958 			linkattr |= FW_PORT_CAP32_SPEED_100G;
1959 
1960 		break;
1961 	}
1962 
1963 	case FW_PORT_ACTION_GET_PORT_INFO32: {
1964 		u32 lstatus32;
1965 
1966 		lstatus32 = be32_to_cpu(cmd->u.info32.lstatus32_to_cbllen32);
1967 		link_ok = (lstatus32 & FW_PORT_CMD_LSTATUS32_F) != 0;
1968 		linkdnrc = FW_PORT_CMD_LINKDNRC32_G(lstatus32);
1969 		port_type = FW_PORT_CMD_PORTTYPE32_G(lstatus32);
1970 		mod_type = FW_PORT_CMD_MODTYPE32_G(lstatus32);
1971 		pcaps = be32_to_cpu(cmd->u.info32.pcaps32);
1972 		acaps = be32_to_cpu(cmd->u.info32.acaps32);
1973 		lpacaps = be32_to_cpu(cmd->u.info32.lpacaps32);
1974 		linkattr = be32_to_cpu(cmd->u.info32.linkattr32);
1975 		break;
1976 	}
1977 
1978 	default:
1979 		dev_err(adapter->pdev_dev, "Handle Port Information: Bad Command/Action %#x\n",
1980 			be32_to_cpu(cmd->action_to_len16));
1981 		return;
1982 	}
1983 
1984 	fec = fwcap_to_cc_fec(acaps);
1985 	adv_fc = fwcap_to_cc_pause(acaps);
1986 	fc = fwcap_to_cc_pause(linkattr);
1987 	speed = fwcap_to_speed(linkattr);
1988 
1989 	if (mod_type != pi->mod_type) {
1990 		/* When a new Transceiver Module is inserted, the Firmware
1991 		 * will examine any Forward Error Correction parameters
1992 		 * present in the Transceiver Module i2c EPROM and determine
1993 		 * the supported and recommended FEC settings from those
1994 		 * based on IEEE 802.3 standards.  We always record the
1995 		 * IEEE 802.3 recommended "automatic" settings.
1996 		 */
1997 		lc->auto_fec = fec;
1998 
1999 		/* Some versions of the early T6 Firmware "cheated" when
2000 		 * handling different Transceiver Modules by changing the
2001 		 * underlaying Port Type reported to the Host Drivers.  As
2002 		 * such we need to capture whatever Port Type the Firmware
2003 		 * sends us and record it in case it's different from what we
2004 		 * were told earlier.  Unfortunately, since Firmware is
2005 		 * forever, we'll need to keep this code here forever, but in
2006 		 * later T6 Firmware it should just be an assignment of the
2007 		 * same value already recorded.
2008 		 */
2009 		pi->port_type = port_type;
2010 
2011 		pi->mod_type = mod_type;
2012 		t4vf_os_portmod_changed(adapter, pi->pidx);
2013 	}
2014 
2015 	if (link_ok != lc->link_ok || speed != lc->speed ||
2016 	    fc != lc->fc || adv_fc != lc->advertised_fc ||
2017 	    fec != lc->fec) {
2018 		/* something changed */
2019 		if (!link_ok && lc->link_ok) {
2020 			lc->link_down_rc = linkdnrc;
2021 			dev_warn_ratelimited(adapter->pdev_dev,
2022 					     "Port %d link down, reason: %s\n",
2023 					     pi->port_id,
2024 					     t4vf_link_down_rc_str(linkdnrc));
2025 		}
2026 		lc->link_ok = link_ok;
2027 		lc->speed = speed;
2028 		lc->advertised_fc = adv_fc;
2029 		lc->fc = fc;
2030 		lc->fec = fec;
2031 
2032 		lc->pcaps = pcaps;
2033 		lc->lpacaps = lpacaps;
2034 		lc->acaps = acaps & ADVERT_MASK;
2035 
2036 		/* If we're not physically capable of Auto-Negotiation, note
2037 		 * this as Auto-Negotiation disabled.  Otherwise, we track
2038 		 * what Auto-Negotiation settings we have.  Note parallel
2039 		 * structure in init_link_config().
2040 		 */
2041 		if (!(lc->pcaps & FW_PORT_CAP32_ANEG)) {
2042 			lc->autoneg = AUTONEG_DISABLE;
2043 		} else if (lc->acaps & FW_PORT_CAP32_ANEG) {
2044 			lc->autoneg = AUTONEG_ENABLE;
2045 		} else {
2046 			/* When Autoneg is disabled, user needs to set
2047 			 * single speed.
2048 			 * Similar to cxgb4_ethtool.c: set_link_ksettings
2049 			 */
2050 			lc->acaps = 0;
2051 			lc->speed_caps = fwcap_to_speed(acaps);
2052 			lc->autoneg = AUTONEG_DISABLE;
2053 		}
2054 
2055 		t4vf_os_link_changed(adapter, pi->pidx, link_ok);
2056 	}
2057 }
2058 
2059 /**
2060  *	t4vf_update_port_info - retrieve and update port information if changed
2061  *	@pi: the port_info
2062  *
2063  *	We issue a Get Port Information Command to the Firmware and, if
2064  *	successful, we check to see if anything is different from what we
2065  *	last recorded and update things accordingly.
2066  */
t4vf_update_port_info(struct port_info * pi)2067 int t4vf_update_port_info(struct port_info *pi)
2068 {
2069 	unsigned int fw_caps = pi->adapter->params.fw_caps_support;
2070 	struct fw_port_cmd port_cmd;
2071 	int ret;
2072 
2073 	memset(&port_cmd, 0, sizeof(port_cmd));
2074 	port_cmd.op_to_portid = cpu_to_be32(FW_CMD_OP_V(FW_PORT_CMD) |
2075 					    FW_CMD_REQUEST_F | FW_CMD_READ_F |
2076 					    FW_PORT_CMD_PORTID_V(pi->port_id));
2077 	port_cmd.action_to_len16 = cpu_to_be32(
2078 		FW_PORT_CMD_ACTION_V(fw_caps == FW_CAPS16
2079 				     ? FW_PORT_ACTION_GET_PORT_INFO
2080 				     : FW_PORT_ACTION_GET_PORT_INFO32) |
2081 		FW_LEN16(port_cmd));
2082 	ret = t4vf_wr_mbox(pi->adapter, &port_cmd, sizeof(port_cmd),
2083 			   &port_cmd);
2084 	if (ret)
2085 		return ret;
2086 	t4vf_handle_get_port_info(pi, &port_cmd);
2087 	return 0;
2088 }
2089 
2090 /**
2091  *	t4vf_handle_fw_rpl - process a firmware reply message
2092  *	@adapter: the adapter
2093  *	@rpl: start of the firmware message
2094  *
2095  *	Processes a firmware message, such as link state change messages.
2096  */
t4vf_handle_fw_rpl(struct adapter * adapter,const __be64 * rpl)2097 int t4vf_handle_fw_rpl(struct adapter *adapter, const __be64 *rpl)
2098 {
2099 	const struct fw_cmd_hdr *cmd_hdr = (const struct fw_cmd_hdr *)rpl;
2100 	u8 opcode = FW_CMD_OP_G(be32_to_cpu(cmd_hdr->hi));
2101 
2102 	switch (opcode) {
2103 	case FW_PORT_CMD: {
2104 		/*
2105 		 * Link/module state change message.
2106 		 */
2107 		const struct fw_port_cmd *port_cmd =
2108 			(const struct fw_port_cmd *)rpl;
2109 		int action = FW_PORT_CMD_ACTION_G(
2110 			be32_to_cpu(port_cmd->action_to_len16));
2111 		int port_id, pidx;
2112 
2113 		if (action != FW_PORT_ACTION_GET_PORT_INFO &&
2114 		    action != FW_PORT_ACTION_GET_PORT_INFO32) {
2115 			dev_err(adapter->pdev_dev,
2116 				"Unknown firmware PORT reply action %x\n",
2117 				action);
2118 			break;
2119 		}
2120 
2121 		port_id = FW_PORT_CMD_PORTID_G(
2122 			be32_to_cpu(port_cmd->op_to_portid));
2123 		for_each_port(adapter, pidx) {
2124 			struct port_info *pi = adap2pinfo(adapter, pidx);
2125 
2126 			if (pi->port_id != port_id)
2127 				continue;
2128 			t4vf_handle_get_port_info(pi, port_cmd);
2129 		}
2130 		break;
2131 	}
2132 
2133 	default:
2134 		dev_err(adapter->pdev_dev, "Unknown firmware reply %X\n",
2135 			opcode);
2136 	}
2137 	return 0;
2138 }
2139 
2140 /**
2141  */
t4vf_prep_adapter(struct adapter * adapter)2142 int t4vf_prep_adapter(struct adapter *adapter)
2143 {
2144 	int err;
2145 	unsigned int chipid;
2146 
2147 	/* Wait for the device to become ready before proceeding ...
2148 	 */
2149 	err = t4vf_wait_dev_ready(adapter);
2150 	if (err)
2151 		return err;
2152 
2153 	/* Default port and clock for debugging in case we can't reach
2154 	 * firmware.
2155 	 */
2156 	adapter->params.nports = 1;
2157 	adapter->params.vfres.pmask = 1;
2158 	adapter->params.vpd.cclk = 50000;
2159 
2160 	adapter->params.chip = 0;
2161 	switch (CHELSIO_PCI_ID_VER(adapter->pdev->device)) {
2162 	case CHELSIO_T4:
2163 		adapter->params.chip |= CHELSIO_CHIP_CODE(CHELSIO_T4, 0);
2164 		adapter->params.arch.sge_fl_db = DBPRIO_F;
2165 		adapter->params.arch.mps_tcam_size =
2166 				NUM_MPS_CLS_SRAM_L_INSTANCES;
2167 		break;
2168 
2169 	case CHELSIO_T5:
2170 		chipid = REV_G(t4_read_reg(adapter, PL_VF_REV_A));
2171 		adapter->params.chip |= CHELSIO_CHIP_CODE(CHELSIO_T5, chipid);
2172 		adapter->params.arch.sge_fl_db = DBPRIO_F | DBTYPE_F;
2173 		adapter->params.arch.mps_tcam_size =
2174 				NUM_MPS_T5_CLS_SRAM_L_INSTANCES;
2175 		break;
2176 
2177 	case CHELSIO_T6:
2178 		chipid = REV_G(t4_read_reg(adapter, PL_VF_REV_A));
2179 		adapter->params.chip |= CHELSIO_CHIP_CODE(CHELSIO_T6, chipid);
2180 		adapter->params.arch.sge_fl_db = 0;
2181 		adapter->params.arch.mps_tcam_size =
2182 				NUM_MPS_T5_CLS_SRAM_L_INSTANCES;
2183 		break;
2184 	}
2185 
2186 	return 0;
2187 }
2188 
2189 /**
2190  *	t4vf_get_vf_mac_acl - Get the MAC address to be set to
2191  *			      the VI of this VF.
2192  *	@adapter: The adapter
2193  *	@pf: The pf associated with vf
2194  *	@naddr: the number of ACL MAC addresses returned in addr
2195  *	@addr: Placeholder for MAC addresses
2196  *
2197  *	Find the MAC address to be set to the VF's VI. The requested MAC address
2198  *	is from the host OS via callback in the PF driver.
2199  */
t4vf_get_vf_mac_acl(struct adapter * adapter,unsigned int pf,unsigned int * naddr,u8 * addr)2200 int t4vf_get_vf_mac_acl(struct adapter *adapter, unsigned int pf,
2201 			unsigned int *naddr, u8 *addr)
2202 {
2203 	struct fw_acl_mac_cmd cmd;
2204 	int ret;
2205 
2206 	memset(&cmd, 0, sizeof(cmd));
2207 	cmd.op_to_vfn = cpu_to_be32(FW_CMD_OP_V(FW_ACL_MAC_CMD) |
2208 				    FW_CMD_REQUEST_F |
2209 				    FW_CMD_READ_F);
2210 	cmd.en_to_len16 = cpu_to_be32((unsigned int)FW_LEN16(cmd));
2211 	ret = t4vf_wr_mbox(adapter, &cmd, sizeof(cmd), &cmd);
2212 	if (ret)
2213 		return ret;
2214 
2215 	if (cmd.nmac < *naddr)
2216 		*naddr = cmd.nmac;
2217 
2218 	switch (pf) {
2219 	case 3:
2220 		memcpy(addr, cmd.macaddr3, sizeof(cmd.macaddr3));
2221 		break;
2222 	case 2:
2223 		memcpy(addr, cmd.macaddr2, sizeof(cmd.macaddr2));
2224 		break;
2225 	case 1:
2226 		memcpy(addr, cmd.macaddr1, sizeof(cmd.macaddr1));
2227 		break;
2228 	case 0:
2229 		memcpy(addr, cmd.macaddr0, sizeof(cmd.macaddr0));
2230 		break;
2231 	}
2232 
2233 	return ret;
2234 }
2235 
2236 /**
2237  *	t4vf_get_vf_vlan_acl - Get the VLAN ID to be set to
2238  *                             the VI of this VF.
2239  *	@adapter: The adapter
2240  *
2241  *	Find the VLAN ID to be set to the VF's VI. The requested VLAN ID
2242  *	is from the host OS via callback in the PF driver.
2243  */
t4vf_get_vf_vlan_acl(struct adapter * adapter)2244 int t4vf_get_vf_vlan_acl(struct adapter *adapter)
2245 {
2246 	struct fw_acl_vlan_cmd cmd;
2247 	int vlan = 0;
2248 	int ret = 0;
2249 
2250 	cmd.op_to_vfn = htonl(FW_CMD_OP_V(FW_ACL_VLAN_CMD) |
2251 			      FW_CMD_REQUEST_F | FW_CMD_READ_F);
2252 
2253 	/* Note: Do not enable the ACL */
2254 	cmd.en_to_len16 = cpu_to_be32((unsigned int)FW_LEN16(cmd));
2255 
2256 	ret = t4vf_wr_mbox(adapter, &cmd, sizeof(cmd), &cmd);
2257 
2258 	if (!ret)
2259 		vlan = be16_to_cpu(cmd.vlanid[0]);
2260 
2261 	return vlan;
2262 }
2263