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/ethtool.h>
37 #include <linux/pci.h>
38
39 #include "t4vf_common.h"
40 #include "t4vf_defs.h"
41
42 #include "../cxgb4/t4_regs.h"
43 #include "../cxgb4/t4_values.h"
44 #include "../cxgb4/t4fw_api.h"
45
46 /*
47 * Wait for the device to become ready (signified by our "who am I" register
48 * returning a value other than all 1's). Return an error if it doesn't
49 * become ready ...
50 */
t4vf_wait_dev_ready(struct adapter * adapter)51 int t4vf_wait_dev_ready(struct adapter *adapter)
52 {
53 const u32 whoami = T4VF_PL_BASE_ADDR + PL_VF_WHOAMI;
54 const u32 notready1 = 0xffffffff;
55 const u32 notready2 = 0xeeeeeeee;
56 u32 val;
57
58 val = t4_read_reg(adapter, whoami);
59 if (val != notready1 && val != notready2)
60 return 0;
61 msleep(500);
62 val = t4_read_reg(adapter, whoami);
63 if (val != notready1 && val != notready2)
64 return 0;
65 else
66 return -EIO;
67 }
68
69 /*
70 * Get the reply to a mailbox command and store it in @rpl in big-endian order
71 * (since the firmware data structures are specified in a big-endian layout).
72 */
get_mbox_rpl(struct adapter * adapter,__be64 * rpl,int size,u32 mbox_data)73 static void get_mbox_rpl(struct adapter *adapter, __be64 *rpl, int size,
74 u32 mbox_data)
75 {
76 for ( ; size; size -= 8, mbox_data += 8)
77 *rpl++ = cpu_to_be64(t4_read_reg64(adapter, mbox_data));
78 }
79
80 /**
81 * t4vf_record_mbox - record a Firmware Mailbox Command/Reply in the log
82 * @adapter: the adapter
83 * @cmd: the Firmware Mailbox Command or Reply
84 * @size: command length in bytes
85 * @access: the time (ms) needed to access the Firmware Mailbox
86 * @execute: the time (ms) the command spent being executed
87 */
t4vf_record_mbox(struct adapter * adapter,const __be64 * cmd,int size,int access,int execute)88 static void t4vf_record_mbox(struct adapter *adapter, const __be64 *cmd,
89 int size, int access, int execute)
90 {
91 struct mbox_cmd_log *log = adapter->mbox_log;
92 struct mbox_cmd *entry;
93 int i;
94
95 entry = mbox_cmd_log_entry(log, log->cursor++);
96 if (log->cursor == log->size)
97 log->cursor = 0;
98
99 for (i = 0; i < size / 8; i++)
100 entry->cmd[i] = be64_to_cpu(cmd[i]);
101 while (i < MBOX_LEN / 8)
102 entry->cmd[i++] = 0;
103 entry->timestamp = jiffies;
104 entry->seqno = log->seqno++;
105 entry->access = access;
106 entry->execute = execute;
107 }
108
109 /**
110 * t4vf_wr_mbox_core - send a command to FW through the mailbox
111 * @adapter: the adapter
112 * @cmd: the command to write
113 * @size: command length in bytes
114 * @rpl: where to optionally store the reply
115 * @sleep_ok: if true we may sleep while awaiting command completion
116 *
117 * Sends the given command to FW through the mailbox and waits for the
118 * FW to execute the command. If @rpl is not %NULL it is used to store
119 * the FW's reply to the command. The command and its optional reply
120 * are of the same length. FW can take up to 500 ms to respond.
121 * @sleep_ok determines whether we may sleep while awaiting the response.
122 * If sleeping is allowed we use progressive backoff otherwise we spin.
123 *
124 * The return value is 0 on success or a negative errno on failure. A
125 * failure can happen either because we are not able to execute the
126 * command or FW executes it but signals an error. In the latter case
127 * the return value is the error code indicated by FW (negated).
128 */
t4vf_wr_mbox_core(struct adapter * adapter,const void * cmd,int size,void * rpl,bool sleep_ok)129 int t4vf_wr_mbox_core(struct adapter *adapter, const void *cmd, int size,
130 void *rpl, bool sleep_ok)
131 {
132 static const int delay[] = {
133 1, 1, 3, 5, 10, 10, 20, 50, 100
134 };
135
136 u16 access = 0, execute = 0;
137 u32 v, mbox_data;
138 int i, ms, delay_idx, ret;
139 const __be64 *p;
140 u32 mbox_ctl = T4VF_CIM_BASE_ADDR + CIM_VF_EXT_MAILBOX_CTRL;
141 u32 cmd_op = FW_CMD_OP_G(be32_to_cpu(((struct fw_cmd_hdr *)cmd)->hi));
142 __be64 cmd_rpl[MBOX_LEN / 8];
143 struct mbox_list entry;
144
145 /* In T6, mailbox size is changed to 128 bytes to avoid
146 * invalidating the entire prefetch buffer.
147 */
148 if (CHELSIO_CHIP_VERSION(adapter->params.chip) <= CHELSIO_T5)
149 mbox_data = T4VF_MBDATA_BASE_ADDR;
150 else
151 mbox_data = T6VF_MBDATA_BASE_ADDR;
152
153 /*
154 * Commands must be multiples of 16 bytes in length and may not be
155 * larger than the size of the Mailbox Data register array.
156 */
157 if ((size % 16) != 0 ||
158 size > NUM_CIM_VF_MAILBOX_DATA_INSTANCES * 4)
159 return -EINVAL;
160
161 /* Queue ourselves onto the mailbox access list. When our entry is at
162 * the front of the list, we have rights to access the mailbox. So we
163 * wait [for a while] till we're at the front [or bail out with an
164 * EBUSY] ...
165 */
166 spin_lock(&adapter->mbox_lock);
167 list_add_tail(&entry.list, &adapter->mlist.list);
168 spin_unlock(&adapter->mbox_lock);
169
170 delay_idx = 0;
171 ms = delay[0];
172
173 for (i = 0; ; i += ms) {
174 /* If we've waited too long, return a busy indication. This
175 * really ought to be based on our initial position in the
176 * mailbox access list but this is a start. We very rearely
177 * contend on access to the mailbox ...
178 */
179 if (i > FW_CMD_MAX_TIMEOUT) {
180 spin_lock(&adapter->mbox_lock);
181 list_del(&entry.list);
182 spin_unlock(&adapter->mbox_lock);
183 ret = -EBUSY;
184 t4vf_record_mbox(adapter, cmd, size, access, ret);
185 return ret;
186 }
187
188 /* If we're at the head, break out and start the mailbox
189 * protocol.
190 */
191 if (list_first_entry(&adapter->mlist.list, struct mbox_list,
192 list) == &entry)
193 break;
194
195 /* Delay for a bit before checking again ... */
196 if (sleep_ok) {
197 ms = delay[delay_idx]; /* last element may repeat */
198 if (delay_idx < ARRAY_SIZE(delay) - 1)
199 delay_idx++;
200 msleep(ms);
201 } else {
202 mdelay(ms);
203 }
204 }
205
206 /*
207 * Loop trying to get ownership of the mailbox. Return an error
208 * if we can't gain ownership.
209 */
210 v = MBOWNER_G(t4_read_reg(adapter, mbox_ctl));
211 for (i = 0; v == MBOX_OWNER_NONE && i < 3; i++)
212 v = MBOWNER_G(t4_read_reg(adapter, mbox_ctl));
213 if (v != MBOX_OWNER_DRV) {
214 spin_lock(&adapter->mbox_lock);
215 list_del(&entry.list);
216 spin_unlock(&adapter->mbox_lock);
217 ret = (v == MBOX_OWNER_FW) ? -EBUSY : -ETIMEDOUT;
218 t4vf_record_mbox(adapter, cmd, size, access, ret);
219 return ret;
220 }
221
222 /*
223 * Write the command array into the Mailbox Data register array and
224 * transfer ownership of the mailbox to the firmware.
225 *
226 * For the VFs, the Mailbox Data "registers" are actually backed by
227 * T4's "MA" interface rather than PL Registers (as is the case for
228 * the PFs). Because these are in different coherency domains, the
229 * write to the VF's PL-register-backed Mailbox Control can race in
230 * front of the writes to the MA-backed VF Mailbox Data "registers".
231 * So we need to do a read-back on at least one byte of the VF Mailbox
232 * Data registers before doing the write to the VF Mailbox Control
233 * register.
234 */
235 if (cmd_op != FW_VI_STATS_CMD)
236 t4vf_record_mbox(adapter, cmd, size, access, 0);
237 for (i = 0, p = cmd; i < size; i += 8)
238 t4_write_reg64(adapter, mbox_data + i, be64_to_cpu(*p++));
239 t4_read_reg(adapter, mbox_data); /* flush write */
240
241 t4_write_reg(adapter, mbox_ctl,
242 MBMSGVALID_F | MBOWNER_V(MBOX_OWNER_FW));
243 t4_read_reg(adapter, mbox_ctl); /* flush write */
244
245 /*
246 * Spin waiting for firmware to acknowledge processing our command.
247 */
248 delay_idx = 0;
249 ms = delay[0];
250
251 for (i = 0; i < FW_CMD_MAX_TIMEOUT; i += ms) {
252 if (sleep_ok) {
253 ms = delay[delay_idx];
254 if (delay_idx < ARRAY_SIZE(delay) - 1)
255 delay_idx++;
256 msleep(ms);
257 } else
258 mdelay(ms);
259
260 /*
261 * If we're the owner, see if this is the reply we wanted.
262 */
263 v = t4_read_reg(adapter, mbox_ctl);
264 if (MBOWNER_G(v) == MBOX_OWNER_DRV) {
265 /*
266 * If the Message Valid bit isn't on, revoke ownership
267 * of the mailbox and continue waiting for our reply.
268 */
269 if ((v & MBMSGVALID_F) == 0) {
270 t4_write_reg(adapter, mbox_ctl,
271 MBOWNER_V(MBOX_OWNER_NONE));
272 continue;
273 }
274
275 /*
276 * We now have our reply. Extract the command return
277 * value, copy the reply back to our caller's buffer
278 * (if specified) and revoke ownership of the mailbox.
279 * We return the (negated) firmware command return
280 * code (this depends on FW_SUCCESS == 0).
281 */
282 get_mbox_rpl(adapter, cmd_rpl, size, mbox_data);
283
284 /* return value in low-order little-endian word */
285 v = be64_to_cpu(cmd_rpl[0]);
286
287 if (rpl) {
288 /* request bit in high-order BE word */
289 WARN_ON((be32_to_cpu(*(const __be32 *)cmd)
290 & FW_CMD_REQUEST_F) == 0);
291 memcpy(rpl, cmd_rpl, size);
292 WARN_ON((be32_to_cpu(*(__be32 *)rpl)
293 & FW_CMD_REQUEST_F) != 0);
294 }
295 t4_write_reg(adapter, mbox_ctl,
296 MBOWNER_V(MBOX_OWNER_NONE));
297 execute = i + ms;
298 if (cmd_op != FW_VI_STATS_CMD)
299 t4vf_record_mbox(adapter, cmd_rpl, size, access,
300 execute);
301 spin_lock(&adapter->mbox_lock);
302 list_del(&entry.list);
303 spin_unlock(&adapter->mbox_lock);
304 return -FW_CMD_RETVAL_G(v);
305 }
306 }
307
308 /* We timed out. Return the error ... */
309 ret = -ETIMEDOUT;
310 t4vf_record_mbox(adapter, cmd, size, access, ret);
311 spin_lock(&adapter->mbox_lock);
312 list_del(&entry.list);
313 spin_unlock(&adapter->mbox_lock);
314 return ret;
315 }
316
317 /* In the Physical Function Driver Common Code, the ADVERT_MASK is used to
318 * mask out bits in the Advertised Port Capabilities which are managed via
319 * separate controls, like Pause Frames and Forward Error Correction. In the
320 * Virtual Function Common Code, since we never perform L1 Configuration on
321 * the Link, the only things we really need to filter out are things which
322 * we decode and report separately like Speed.
323 */
324 #define ADVERT_MASK (FW_PORT_CAP32_SPEED_V(FW_PORT_CAP32_SPEED_M) | \
325 FW_PORT_CAP32_802_3_PAUSE | \
326 FW_PORT_CAP32_802_3_ASM_DIR | \
327 FW_PORT_CAP32_FEC_V(FW_PORT_CAP32_FEC_M) | \
328 FW_PORT_CAP32_ANEG)
329
330 /**
331 * fwcaps16_to_caps32 - convert 16-bit Port Capabilities to 32-bits
332 * @caps16: a 16-bit Port Capabilities value
333 *
334 * Returns the equivalent 32-bit Port Capabilities value.
335 */
fwcaps16_to_caps32(fw_port_cap16_t caps16)336 static fw_port_cap32_t fwcaps16_to_caps32(fw_port_cap16_t caps16)
337 {
338 fw_port_cap32_t caps32 = 0;
339
340 #define CAP16_TO_CAP32(__cap) \
341 do { \
342 if (caps16 & FW_PORT_CAP_##__cap) \
343 caps32 |= FW_PORT_CAP32_##__cap; \
344 } while (0)
345
346 CAP16_TO_CAP32(SPEED_100M);
347 CAP16_TO_CAP32(SPEED_1G);
348 CAP16_TO_CAP32(SPEED_25G);
349 CAP16_TO_CAP32(SPEED_10G);
350 CAP16_TO_CAP32(SPEED_40G);
351 CAP16_TO_CAP32(SPEED_100G);
352 CAP16_TO_CAP32(FC_RX);
353 CAP16_TO_CAP32(FC_TX);
354 CAP16_TO_CAP32(ANEG);
355 CAP16_TO_CAP32(MDIAUTO);
356 CAP16_TO_CAP32(MDISTRAIGHT);
357 CAP16_TO_CAP32(FEC_RS);
358 CAP16_TO_CAP32(FEC_BASER_RS);
359 CAP16_TO_CAP32(802_3_PAUSE);
360 CAP16_TO_CAP32(802_3_ASM_DIR);
361
362 #undef CAP16_TO_CAP32
363
364 return caps32;
365 }
366
367 /* Translate Firmware Pause specification to Common Code */
fwcap_to_cc_pause(fw_port_cap32_t fw_pause)368 static inline enum cc_pause fwcap_to_cc_pause(fw_port_cap32_t fw_pause)
369 {
370 enum cc_pause cc_pause = 0;
371
372 if (fw_pause & FW_PORT_CAP32_FC_RX)
373 cc_pause |= PAUSE_RX;
374 if (fw_pause & FW_PORT_CAP32_FC_TX)
375 cc_pause |= PAUSE_TX;
376
377 return cc_pause;
378 }
379
380 /* Translate Firmware Forward Error Correction specification to Common Code */
fwcap_to_cc_fec(fw_port_cap32_t fw_fec)381 static inline enum cc_fec fwcap_to_cc_fec(fw_port_cap32_t fw_fec)
382 {
383 enum cc_fec cc_fec = 0;
384
385 if (fw_fec & FW_PORT_CAP32_FEC_RS)
386 cc_fec |= FEC_RS;
387 if (fw_fec & FW_PORT_CAP32_FEC_BASER_RS)
388 cc_fec |= FEC_BASER_RS;
389
390 return cc_fec;
391 }
392
393 /* Return the highest speed set in the port capabilities, in Mb/s. */
fwcap_to_speed(fw_port_cap32_t caps)394 static unsigned int fwcap_to_speed(fw_port_cap32_t caps)
395 {
396 #define TEST_SPEED_RETURN(__caps_speed, __speed) \
397 do { \
398 if (caps & FW_PORT_CAP32_SPEED_##__caps_speed) \
399 return __speed; \
400 } while (0)
401
402 TEST_SPEED_RETURN(400G, 400000);
403 TEST_SPEED_RETURN(200G, 200000);
404 TEST_SPEED_RETURN(100G, 100000);
405 TEST_SPEED_RETURN(50G, 50000);
406 TEST_SPEED_RETURN(40G, 40000);
407 TEST_SPEED_RETURN(25G, 25000);
408 TEST_SPEED_RETURN(10G, 10000);
409 TEST_SPEED_RETURN(1G, 1000);
410 TEST_SPEED_RETURN(100M, 100);
411
412 #undef TEST_SPEED_RETURN
413
414 return 0;
415 }
416
417 /**
418 * fwcap_to_fwspeed - return highest speed in Port Capabilities
419 * @acaps: advertised Port Capabilities
420 *
421 * Get the highest speed for the port from the advertised Port
422 * Capabilities. It will be either the highest speed from the list of
423 * speeds or whatever user has set using ethtool.
424 */
fwcap_to_fwspeed(fw_port_cap32_t acaps)425 static fw_port_cap32_t fwcap_to_fwspeed(fw_port_cap32_t acaps)
426 {
427 #define TEST_SPEED_RETURN(__caps_speed) \
428 do { \
429 if (acaps & FW_PORT_CAP32_SPEED_##__caps_speed) \
430 return FW_PORT_CAP32_SPEED_##__caps_speed; \
431 } while (0)
432
433 TEST_SPEED_RETURN(400G);
434 TEST_SPEED_RETURN(200G);
435 TEST_SPEED_RETURN(100G);
436 TEST_SPEED_RETURN(50G);
437 TEST_SPEED_RETURN(40G);
438 TEST_SPEED_RETURN(25G);
439 TEST_SPEED_RETURN(10G);
440 TEST_SPEED_RETURN(1G);
441 TEST_SPEED_RETURN(100M);
442
443 #undef TEST_SPEED_RETURN
444 return 0;
445 }
446
447 /*
448 * init_link_config - initialize a link's SW state
449 * @lc: structure holding the link state
450 * @pcaps: link Port Capabilities
451 * @acaps: link current Advertised Port Capabilities
452 *
453 * Initializes the SW state maintained for each link, including the link's
454 * capabilities and default speed/flow-control/autonegotiation settings.
455 */
init_link_config(struct link_config * lc,fw_port_cap32_t pcaps,fw_port_cap32_t acaps)456 static void init_link_config(struct link_config *lc,
457 fw_port_cap32_t pcaps,
458 fw_port_cap32_t acaps)
459 {
460 lc->pcaps = pcaps;
461 lc->lpacaps = 0;
462 lc->speed_caps = 0;
463 lc->speed = 0;
464 lc->requested_fc = lc->fc = PAUSE_RX | PAUSE_TX;
465
466 /* For Forward Error Control, we default to whatever the Firmware
467 * tells us the Link is currently advertising.
468 */
469 lc->auto_fec = fwcap_to_cc_fec(acaps);
470 lc->requested_fec = FEC_AUTO;
471 lc->fec = lc->auto_fec;
472
473 /* If the Port is capable of Auto-Negtotiation, initialize it as
474 * "enabled" and copy over all of the Physical Port Capabilities
475 * to the Advertised Port Capabilities. Otherwise mark it as
476 * Auto-Negotiate disabled and select the highest supported speed
477 * for the link. Note parallel structure in t4_link_l1cfg_core()
478 * and t4_handle_get_port_info().
479 */
480 if (lc->pcaps & FW_PORT_CAP32_ANEG) {
481 lc->acaps = acaps & ADVERT_MASK;
482 lc->autoneg = AUTONEG_ENABLE;
483 lc->requested_fc |= PAUSE_AUTONEG;
484 } else {
485 lc->acaps = 0;
486 lc->autoneg = AUTONEG_DISABLE;
487 lc->speed_caps = fwcap_to_fwspeed(acaps);
488 }
489 }
490
491 /**
492 * t4vf_port_init - initialize port hardware/software state
493 * @adapter: the adapter
494 * @pidx: the adapter port index
495 */
t4vf_port_init(struct adapter * adapter,int pidx)496 int t4vf_port_init(struct adapter *adapter, int pidx)
497 {
498 struct port_info *pi = adap2pinfo(adapter, pidx);
499 unsigned int fw_caps = adapter->params.fw_caps_support;
500 struct fw_vi_cmd vi_cmd, vi_rpl;
501 struct fw_port_cmd port_cmd, port_rpl;
502 enum fw_port_type port_type;
503 int mdio_addr;
504 fw_port_cap32_t pcaps, acaps;
505 int ret;
506
507 /* If we haven't yet determined whether we're talking to Firmware
508 * which knows the new 32-bit Port Capabilities, it's time to find
509 * out now. This will also tell new Firmware to send us Port Status
510 * Updates using the new 32-bit Port Capabilities version of the
511 * Port Information message.
512 */
513 if (fw_caps == FW_CAPS_UNKNOWN) {
514 u32 param, val;
515
516 param = (FW_PARAMS_MNEM_V(FW_PARAMS_MNEM_PFVF) |
517 FW_PARAMS_PARAM_X_V(FW_PARAMS_PARAM_PFVF_PORT_CAPS32));
518 val = 1;
519 ret = t4vf_set_params(adapter, 1, ¶m, &val);
520 fw_caps = (ret == 0 ? FW_CAPS32 : FW_CAPS16);
521 adapter->params.fw_caps_support = fw_caps;
522 }
523
524 /*
525 * Execute a VI Read command to get our Virtual Interface information
526 * like MAC address, etc.
527 */
528 memset(&vi_cmd, 0, sizeof(vi_cmd));
529 vi_cmd.op_to_vfn = cpu_to_be32(FW_CMD_OP_V(FW_VI_CMD) |
530 FW_CMD_REQUEST_F |
531 FW_CMD_READ_F);
532 vi_cmd.alloc_to_len16 = cpu_to_be32(FW_LEN16(vi_cmd));
533 vi_cmd.type_viid = cpu_to_be16(FW_VI_CMD_VIID_V(pi->viid));
534 ret = t4vf_wr_mbox(adapter, &vi_cmd, sizeof(vi_cmd), &vi_rpl);
535 if (ret != FW_SUCCESS)
536 return ret;
537
538 BUG_ON(pi->port_id != FW_VI_CMD_PORTID_G(vi_rpl.portid_pkd));
539 pi->rss_size = FW_VI_CMD_RSSSIZE_G(be16_to_cpu(vi_rpl.rsssize_pkd));
540 t4_os_set_hw_addr(adapter, pidx, vi_rpl.mac);
541
542 /*
543 * If we don't have read access to our port information, we're done
544 * now. Otherwise, execute a PORT Read command to get it ...
545 */
546 if (!(adapter->params.vfres.r_caps & FW_CMD_CAP_PORT))
547 return 0;
548
549 memset(&port_cmd, 0, sizeof(port_cmd));
550 port_cmd.op_to_portid = cpu_to_be32(FW_CMD_OP_V(FW_PORT_CMD) |
551 FW_CMD_REQUEST_F |
552 FW_CMD_READ_F |
553 FW_PORT_CMD_PORTID_V(pi->port_id));
554 port_cmd.action_to_len16 = cpu_to_be32(
555 FW_PORT_CMD_ACTION_V(fw_caps == FW_CAPS16
556 ? FW_PORT_ACTION_GET_PORT_INFO
557 : FW_PORT_ACTION_GET_PORT_INFO32) |
558 FW_LEN16(port_cmd));
559 ret = t4vf_wr_mbox(adapter, &port_cmd, sizeof(port_cmd), &port_rpl);
560 if (ret != FW_SUCCESS)
561 return ret;
562
563 /* Extract the various fields from the Port Information message. */
564 if (fw_caps == FW_CAPS16) {
565 u32 lstatus = be32_to_cpu(port_rpl.u.info.lstatus_to_modtype);
566
567 port_type = FW_PORT_CMD_PTYPE_G(lstatus);
568 mdio_addr = ((lstatus & FW_PORT_CMD_MDIOCAP_F)
569 ? FW_PORT_CMD_MDIOADDR_G(lstatus)
570 : -1);
571 pcaps = fwcaps16_to_caps32(be16_to_cpu(port_rpl.u.info.pcap));
572 acaps = fwcaps16_to_caps32(be16_to_cpu(port_rpl.u.info.acap));
573 } else {
574 u32 lstatus32 =
575 be32_to_cpu(port_rpl.u.info32.lstatus32_to_cbllen32);
576
577 port_type = FW_PORT_CMD_PORTTYPE32_G(lstatus32);
578 mdio_addr = ((lstatus32 & FW_PORT_CMD_MDIOCAP32_F)
579 ? FW_PORT_CMD_MDIOADDR32_G(lstatus32)
580 : -1);
581 pcaps = be32_to_cpu(port_rpl.u.info32.pcaps32);
582 acaps = be32_to_cpu(port_rpl.u.info32.acaps32);
583 }
584
585 pi->port_type = port_type;
586 pi->mdio_addr = mdio_addr;
587 pi->mod_type = FW_PORT_MOD_TYPE_NA;
588
589 init_link_config(&pi->link_cfg, pcaps, acaps);
590 return 0;
591 }
592
593 /**
594 * t4vf_fw_reset - issue a reset to FW
595 * @adapter: the adapter
596 *
597 * Issues a reset command to FW. For a Physical Function this would
598 * result in the Firmware resetting all of its state. For a Virtual
599 * Function this just resets the state associated with the VF.
600 */
t4vf_fw_reset(struct adapter * adapter)601 int t4vf_fw_reset(struct adapter *adapter)
602 {
603 struct fw_reset_cmd cmd;
604
605 memset(&cmd, 0, sizeof(cmd));
606 cmd.op_to_write = cpu_to_be32(FW_CMD_OP_V(FW_RESET_CMD) |
607 FW_CMD_WRITE_F);
608 cmd.retval_len16 = cpu_to_be32(FW_LEN16(cmd));
609 return t4vf_wr_mbox(adapter, &cmd, sizeof(cmd), NULL);
610 }
611
612 /**
613 * t4vf_query_params - query FW or device parameters
614 * @adapter: the adapter
615 * @nparams: the number of parameters
616 * @params: the parameter names
617 * @vals: the parameter values
618 *
619 * Reads the values of firmware or device parameters. Up to 7 parameters
620 * can be queried at once.
621 */
t4vf_query_params(struct adapter * adapter,unsigned int nparams,const u32 * params,u32 * vals)622 static int t4vf_query_params(struct adapter *adapter, unsigned int nparams,
623 const u32 *params, u32 *vals)
624 {
625 int i, ret;
626 struct fw_params_cmd cmd, rpl;
627 struct fw_params_param *p;
628 size_t len16;
629
630 if (nparams > 7)
631 return -EINVAL;
632
633 memset(&cmd, 0, sizeof(cmd));
634 cmd.op_to_vfn = cpu_to_be32(FW_CMD_OP_V(FW_PARAMS_CMD) |
635 FW_CMD_REQUEST_F |
636 FW_CMD_READ_F);
637 len16 = DIV_ROUND_UP(offsetof(struct fw_params_cmd,
638 param[nparams].mnem), 16);
639 cmd.retval_len16 = cpu_to_be32(FW_CMD_LEN16_V(len16));
640 for (i = 0, p = &cmd.param[0]; i < nparams; i++, p++)
641 p->mnem = htonl(*params++);
642
643 ret = t4vf_wr_mbox(adapter, &cmd, sizeof(cmd), &rpl);
644 if (ret == 0)
645 for (i = 0, p = &rpl.param[0]; i < nparams; i++, p++)
646 *vals++ = be32_to_cpu(p->val);
647 return ret;
648 }
649
650 /**
651 * t4vf_set_params - sets FW or device parameters
652 * @adapter: the adapter
653 * @nparams: the number of parameters
654 * @params: the parameter names
655 * @vals: the parameter values
656 *
657 * Sets the values of firmware or device parameters. Up to 7 parameters
658 * can be specified at once.
659 */
t4vf_set_params(struct adapter * adapter,unsigned int nparams,const u32 * params,const u32 * vals)660 int t4vf_set_params(struct adapter *adapter, unsigned int nparams,
661 const u32 *params, const u32 *vals)
662 {
663 int i;
664 struct fw_params_cmd cmd;
665 struct fw_params_param *p;
666 size_t len16;
667
668 if (nparams > 7)
669 return -EINVAL;
670
671 memset(&cmd, 0, sizeof(cmd));
672 cmd.op_to_vfn = cpu_to_be32(FW_CMD_OP_V(FW_PARAMS_CMD) |
673 FW_CMD_REQUEST_F |
674 FW_CMD_WRITE_F);
675 len16 = DIV_ROUND_UP(offsetof(struct fw_params_cmd,
676 param[nparams]), 16);
677 cmd.retval_len16 = cpu_to_be32(FW_CMD_LEN16_V(len16));
678 for (i = 0, p = &cmd.param[0]; i < nparams; i++, p++) {
679 p->mnem = cpu_to_be32(*params++);
680 p->val = cpu_to_be32(*vals++);
681 }
682
683 return t4vf_wr_mbox(adapter, &cmd, sizeof(cmd), NULL);
684 }
685
686 /**
687 * t4vf_fl_pkt_align - return the fl packet alignment
688 * @adapter: the adapter
689 *
690 * T4 has a single field to specify the packing and padding boundary.
691 * T5 onwards has separate fields for this and hence the alignment for
692 * next packet offset is maximum of these two. And T6 changes the
693 * Ingress Padding Boundary Shift, so it's all a mess and it's best
694 * if we put this in low-level Common Code ...
695 *
696 */
t4vf_fl_pkt_align(struct adapter * adapter)697 int t4vf_fl_pkt_align(struct adapter *adapter)
698 {
699 u32 sge_control, sge_control2;
700 unsigned int ingpadboundary, ingpackboundary, fl_align, ingpad_shift;
701
702 sge_control = adapter->params.sge.sge_control;
703
704 /* T4 uses a single control field to specify both the PCIe Padding and
705 * Packing Boundary. T5 introduced the ability to specify these
706 * separately. The actual Ingress Packet Data alignment boundary
707 * within Packed Buffer Mode is the maximum of these two
708 * specifications. (Note that it makes no real practical sense to
709 * have the Pading Boudary be larger than the Packing Boundary but you
710 * could set the chip up that way and, in fact, legacy T4 code would
711 * end doing this because it would initialize the Padding Boundary and
712 * leave the Packing Boundary initialized to 0 (16 bytes).)
713 * Padding Boundary values in T6 starts from 8B,
714 * where as it is 32B for T4 and T5.
715 */
716 if (CHELSIO_CHIP_VERSION(adapter->params.chip) <= CHELSIO_T5)
717 ingpad_shift = INGPADBOUNDARY_SHIFT_X;
718 else
719 ingpad_shift = T6_INGPADBOUNDARY_SHIFT_X;
720
721 ingpadboundary = 1 << (INGPADBOUNDARY_G(sge_control) + ingpad_shift);
722
723 fl_align = ingpadboundary;
724 if (!is_t4(adapter->params.chip)) {
725 /* T5 has a different interpretation of one of the PCIe Packing
726 * Boundary values.
727 */
728 sge_control2 = adapter->params.sge.sge_control2;
729 ingpackboundary = INGPACKBOUNDARY_G(sge_control2);
730 if (ingpackboundary == INGPACKBOUNDARY_16B_X)
731 ingpackboundary = 16;
732 else
733 ingpackboundary = 1 << (ingpackboundary +
734 INGPACKBOUNDARY_SHIFT_X);
735
736 fl_align = max(ingpadboundary, ingpackboundary);
737 }
738 return fl_align;
739 }
740
741 /**
742 * t4vf_bar2_sge_qregs - return BAR2 SGE Queue register information
743 * @adapter: the adapter
744 * @qid: the Queue ID
745 * @qtype: the Ingress or Egress type for @qid
746 * @pbar2_qoffset: BAR2 Queue Offset
747 * @pbar2_qid: BAR2 Queue ID or 0 for Queue ID inferred SGE Queues
748 *
749 * Returns the BAR2 SGE Queue Registers information associated with the
750 * indicated Absolute Queue ID. These are passed back in return value
751 * pointers. @qtype should be T4_BAR2_QTYPE_EGRESS for Egress Queue
752 * and T4_BAR2_QTYPE_INGRESS for Ingress Queues.
753 *
754 * This may return an error which indicates that BAR2 SGE Queue
755 * registers aren't available. If an error is not returned, then the
756 * following values are returned:
757 *
758 * *@pbar2_qoffset: the BAR2 Offset of the @qid Registers
759 * *@pbar2_qid: the BAR2 SGE Queue ID or 0 of @qid
760 *
761 * If the returned BAR2 Queue ID is 0, then BAR2 SGE registers which
762 * require the "Inferred Queue ID" ability may be used. E.g. the
763 * Write Combining Doorbell Buffer. If the BAR2 Queue ID is not 0,
764 * then these "Inferred Queue ID" register may not be used.
765 */
t4vf_bar2_sge_qregs(struct adapter * adapter,unsigned int qid,enum t4_bar2_qtype qtype,u64 * pbar2_qoffset,unsigned int * pbar2_qid)766 int t4vf_bar2_sge_qregs(struct adapter *adapter,
767 unsigned int qid,
768 enum t4_bar2_qtype qtype,
769 u64 *pbar2_qoffset,
770 unsigned int *pbar2_qid)
771 {
772 unsigned int page_shift, page_size, qpp_shift, qpp_mask;
773 u64 bar2_page_offset, bar2_qoffset;
774 unsigned int bar2_qid, bar2_qid_offset, bar2_qinferred;
775
776 /* T4 doesn't support BAR2 SGE Queue registers.
777 */
778 if (is_t4(adapter->params.chip))
779 return -EINVAL;
780
781 /* Get our SGE Page Size parameters.
782 */
783 page_shift = adapter->params.sge.sge_vf_hps + 10;
784 page_size = 1 << page_shift;
785
786 /* Get the right Queues per Page parameters for our Queue.
787 */
788 qpp_shift = (qtype == T4_BAR2_QTYPE_EGRESS
789 ? adapter->params.sge.sge_vf_eq_qpp
790 : adapter->params.sge.sge_vf_iq_qpp);
791 qpp_mask = (1 << qpp_shift) - 1;
792
793 /* Calculate the basics of the BAR2 SGE Queue register area:
794 * o The BAR2 page the Queue registers will be in.
795 * o The BAR2 Queue ID.
796 * o The BAR2 Queue ID Offset into the BAR2 page.
797 */
798 bar2_page_offset = ((u64)(qid >> qpp_shift) << page_shift);
799 bar2_qid = qid & qpp_mask;
800 bar2_qid_offset = bar2_qid * SGE_UDB_SIZE;
801
802 /* If the BAR2 Queue ID Offset is less than the Page Size, then the
803 * hardware will infer the Absolute Queue ID simply from the writes to
804 * the BAR2 Queue ID Offset within the BAR2 Page (and we need to use a
805 * BAR2 Queue ID of 0 for those writes). Otherwise, we'll simply
806 * write to the first BAR2 SGE Queue Area within the BAR2 Page with
807 * the BAR2 Queue ID and the hardware will infer the Absolute Queue ID
808 * from the BAR2 Page and BAR2 Queue ID.
809 *
810 * One important censequence of this is that some BAR2 SGE registers
811 * have a "Queue ID" field and we can write the BAR2 SGE Queue ID
812 * there. But other registers synthesize the SGE Queue ID purely
813 * from the writes to the registers -- the Write Combined Doorbell
814 * Buffer is a good example. These BAR2 SGE Registers are only
815 * available for those BAR2 SGE Register areas where the SGE Absolute
816 * Queue ID can be inferred from simple writes.
817 */
818 bar2_qoffset = bar2_page_offset;
819 bar2_qinferred = (bar2_qid_offset < page_size);
820 if (bar2_qinferred) {
821 bar2_qoffset += bar2_qid_offset;
822 bar2_qid = 0;
823 }
824
825 *pbar2_qoffset = bar2_qoffset;
826 *pbar2_qid = bar2_qid;
827 return 0;
828 }
829
t4vf_get_pf_from_vf(struct adapter * adapter)830 unsigned int t4vf_get_pf_from_vf(struct adapter *adapter)
831 {
832 u32 whoami;
833
834 whoami = t4_read_reg(adapter, T4VF_PL_BASE_ADDR + PL_VF_WHOAMI_A);
835 return (CHELSIO_CHIP_VERSION(adapter->params.chip) <= CHELSIO_T5 ?
836 SOURCEPF_G(whoami) : T6_SOURCEPF_G(whoami));
837 }
838
839 /**
840 * t4vf_get_sge_params - retrieve adapter Scatter gather Engine parameters
841 * @adapter: the adapter
842 *
843 * Retrieves various core SGE parameters in the form of hardware SGE
844 * register values. The caller is responsible for decoding these as
845 * needed. The SGE parameters are stored in @adapter->params.sge.
846 */
t4vf_get_sge_params(struct adapter * adapter)847 int t4vf_get_sge_params(struct adapter *adapter)
848 {
849 struct sge_params *sge_params = &adapter->params.sge;
850 u32 params[7], vals[7];
851 int v;
852
853 params[0] = (FW_PARAMS_MNEM_V(FW_PARAMS_MNEM_REG) |
854 FW_PARAMS_PARAM_XYZ_V(SGE_CONTROL_A));
855 params[1] = (FW_PARAMS_MNEM_V(FW_PARAMS_MNEM_REG) |
856 FW_PARAMS_PARAM_XYZ_V(SGE_HOST_PAGE_SIZE_A));
857 params[2] = (FW_PARAMS_MNEM_V(FW_PARAMS_MNEM_REG) |
858 FW_PARAMS_PARAM_XYZ_V(SGE_FL_BUFFER_SIZE0_A));
859 params[3] = (FW_PARAMS_MNEM_V(FW_PARAMS_MNEM_REG) |
860 FW_PARAMS_PARAM_XYZ_V(SGE_FL_BUFFER_SIZE1_A));
861 params[4] = (FW_PARAMS_MNEM_V(FW_PARAMS_MNEM_REG) |
862 FW_PARAMS_PARAM_XYZ_V(SGE_TIMER_VALUE_0_AND_1_A));
863 params[5] = (FW_PARAMS_MNEM_V(FW_PARAMS_MNEM_REG) |
864 FW_PARAMS_PARAM_XYZ_V(SGE_TIMER_VALUE_2_AND_3_A));
865 params[6] = (FW_PARAMS_MNEM_V(FW_PARAMS_MNEM_REG) |
866 FW_PARAMS_PARAM_XYZ_V(SGE_TIMER_VALUE_4_AND_5_A));
867 v = t4vf_query_params(adapter, 7, params, vals);
868 if (v)
869 return v;
870 sge_params->sge_control = vals[0];
871 sge_params->sge_host_page_size = vals[1];
872 sge_params->sge_fl_buffer_size[0] = vals[2];
873 sge_params->sge_fl_buffer_size[1] = vals[3];
874 sge_params->sge_timer_value_0_and_1 = vals[4];
875 sge_params->sge_timer_value_2_and_3 = vals[5];
876 sge_params->sge_timer_value_4_and_5 = vals[6];
877
878 /* T4 uses a single control field to specify both the PCIe Padding and
879 * Packing Boundary. T5 introduced the ability to specify these
880 * separately with the Padding Boundary in SGE_CONTROL and Packing
881 * Boundary in SGE_CONTROL2. So for T5 and later we need to grab
882 * SGE_CONTROL in order to determine how ingress packet data will be
883 * laid out in Packed Buffer Mode. Unfortunately, older versions of
884 * the firmware won't let us retrieve SGE_CONTROL2 so if we get a
885 * failure grabbing it we throw an error since we can't figure out the
886 * right value.
887 */
888 if (!is_t4(adapter->params.chip)) {
889 params[0] = (FW_PARAMS_MNEM_V(FW_PARAMS_MNEM_REG) |
890 FW_PARAMS_PARAM_XYZ_V(SGE_CONTROL2_A));
891 v = t4vf_query_params(adapter, 1, params, vals);
892 if (v != FW_SUCCESS) {
893 dev_err(adapter->pdev_dev,
894 "Unable to get SGE Control2; "
895 "probably old firmware.\n");
896 return v;
897 }
898 sge_params->sge_control2 = vals[0];
899 }
900
901 params[0] = (FW_PARAMS_MNEM_V(FW_PARAMS_MNEM_REG) |
902 FW_PARAMS_PARAM_XYZ_V(SGE_INGRESS_RX_THRESHOLD_A));
903 params[1] = (FW_PARAMS_MNEM_V(FW_PARAMS_MNEM_REG) |
904 FW_PARAMS_PARAM_XYZ_V(SGE_CONM_CTRL_A));
905 v = t4vf_query_params(adapter, 2, params, vals);
906 if (v)
907 return v;
908 sge_params->sge_ingress_rx_threshold = vals[0];
909 sge_params->sge_congestion_control = vals[1];
910
911 /* For T5 and later we want to use the new BAR2 Doorbells.
912 * Unfortunately, older firmware didn't allow the this register to be
913 * read.
914 */
915 if (!is_t4(adapter->params.chip)) {
916 unsigned int pf, s_hps, s_qpp;
917
918 params[0] = (FW_PARAMS_MNEM_V(FW_PARAMS_MNEM_REG) |
919 FW_PARAMS_PARAM_XYZ_V(
920 SGE_EGRESS_QUEUES_PER_PAGE_VF_A));
921 params[1] = (FW_PARAMS_MNEM_V(FW_PARAMS_MNEM_REG) |
922 FW_PARAMS_PARAM_XYZ_V(
923 SGE_INGRESS_QUEUES_PER_PAGE_VF_A));
924 v = t4vf_query_params(adapter, 2, params, vals);
925 if (v != FW_SUCCESS) {
926 dev_warn(adapter->pdev_dev,
927 "Unable to get VF SGE Queues/Page; "
928 "probably old firmware.\n");
929 return v;
930 }
931 sge_params->sge_egress_queues_per_page = vals[0];
932 sge_params->sge_ingress_queues_per_page = vals[1];
933
934 /* We need the Queues/Page for our VF. This is based on the
935 * PF from which we're instantiated and is indexed in the
936 * register we just read. Do it once here so other code in
937 * the driver can just use it.
938 */
939 pf = t4vf_get_pf_from_vf(adapter);
940 s_hps = (HOSTPAGESIZEPF0_S +
941 (HOSTPAGESIZEPF1_S - HOSTPAGESIZEPF0_S) * pf);
942 sge_params->sge_vf_hps =
943 ((sge_params->sge_host_page_size >> s_hps)
944 & HOSTPAGESIZEPF0_M);
945
946 s_qpp = (QUEUESPERPAGEPF0_S +
947 (QUEUESPERPAGEPF1_S - QUEUESPERPAGEPF0_S) * pf);
948 sge_params->sge_vf_eq_qpp =
949 ((sge_params->sge_egress_queues_per_page >> s_qpp)
950 & QUEUESPERPAGEPF0_M);
951 sge_params->sge_vf_iq_qpp =
952 ((sge_params->sge_ingress_queues_per_page >> s_qpp)
953 & QUEUESPERPAGEPF0_M);
954 }
955
956 return 0;
957 }
958
959 /**
960 * t4vf_get_vpd_params - retrieve device VPD paremeters
961 * @adapter: the adapter
962 *
963 * Retrives various device Vital Product Data parameters. The parameters
964 * are stored in @adapter->params.vpd.
965 */
t4vf_get_vpd_params(struct adapter * adapter)966 int t4vf_get_vpd_params(struct adapter *adapter)
967 {
968 struct vpd_params *vpd_params = &adapter->params.vpd;
969 u32 params[7], vals[7];
970 int v;
971
972 params[0] = (FW_PARAMS_MNEM_V(FW_PARAMS_MNEM_DEV) |
973 FW_PARAMS_PARAM_X_V(FW_PARAMS_PARAM_DEV_CCLK));
974 v = t4vf_query_params(adapter, 1, params, vals);
975 if (v)
976 return v;
977 vpd_params->cclk = vals[0];
978
979 return 0;
980 }
981
982 /**
983 * t4vf_get_dev_params - retrieve device paremeters
984 * @adapter: the adapter
985 *
986 * Retrives various device parameters. The parameters are stored in
987 * @adapter->params.dev.
988 */
t4vf_get_dev_params(struct adapter * adapter)989 int t4vf_get_dev_params(struct adapter *adapter)
990 {
991 struct dev_params *dev_params = &adapter->params.dev;
992 u32 params[7], vals[7];
993 int v;
994
995 params[0] = (FW_PARAMS_MNEM_V(FW_PARAMS_MNEM_DEV) |
996 FW_PARAMS_PARAM_X_V(FW_PARAMS_PARAM_DEV_FWREV));
997 params[1] = (FW_PARAMS_MNEM_V(FW_PARAMS_MNEM_DEV) |
998 FW_PARAMS_PARAM_X_V(FW_PARAMS_PARAM_DEV_TPREV));
999 v = t4vf_query_params(adapter, 2, params, vals);
1000 if (v)
1001 return v;
1002 dev_params->fwrev = vals[0];
1003 dev_params->tprev = vals[1];
1004
1005 return 0;
1006 }
1007
1008 /**
1009 * t4vf_get_rss_glb_config - retrieve adapter RSS Global Configuration
1010 * @adapter: the adapter
1011 *
1012 * Retrieves global RSS mode and parameters with which we have to live
1013 * and stores them in the @adapter's RSS parameters.
1014 */
t4vf_get_rss_glb_config(struct adapter * adapter)1015 int t4vf_get_rss_glb_config(struct adapter *adapter)
1016 {
1017 struct rss_params *rss = &adapter->params.rss;
1018 struct fw_rss_glb_config_cmd cmd, rpl;
1019 int v;
1020
1021 /*
1022 * Execute an RSS Global Configuration read command to retrieve
1023 * our RSS configuration.
1024 */
1025 memset(&cmd, 0, sizeof(cmd));
1026 cmd.op_to_write = cpu_to_be32(FW_CMD_OP_V(FW_RSS_GLB_CONFIG_CMD) |
1027 FW_CMD_REQUEST_F |
1028 FW_CMD_READ_F);
1029 cmd.retval_len16 = cpu_to_be32(FW_LEN16(cmd));
1030 v = t4vf_wr_mbox(adapter, &cmd, sizeof(cmd), &rpl);
1031 if (v)
1032 return v;
1033
1034 /*
1035 * Transate the big-endian RSS Global Configuration into our
1036 * cpu-endian format based on the RSS mode. We also do first level
1037 * filtering at this point to weed out modes which don't support
1038 * VF Drivers ...
1039 */
1040 rss->mode = FW_RSS_GLB_CONFIG_CMD_MODE_G(
1041 be32_to_cpu(rpl.u.manual.mode_pkd));
1042 switch (rss->mode) {
1043 case FW_RSS_GLB_CONFIG_CMD_MODE_BASICVIRTUAL: {
1044 u32 word = be32_to_cpu(
1045 rpl.u.basicvirtual.synmapen_to_hashtoeplitz);
1046
1047 rss->u.basicvirtual.synmapen =
1048 ((word & FW_RSS_GLB_CONFIG_CMD_SYNMAPEN_F) != 0);
1049 rss->u.basicvirtual.syn4tupenipv6 =
1050 ((word & FW_RSS_GLB_CONFIG_CMD_SYN4TUPENIPV6_F) != 0);
1051 rss->u.basicvirtual.syn2tupenipv6 =
1052 ((word & FW_RSS_GLB_CONFIG_CMD_SYN2TUPENIPV6_F) != 0);
1053 rss->u.basicvirtual.syn4tupenipv4 =
1054 ((word & FW_RSS_GLB_CONFIG_CMD_SYN4TUPENIPV4_F) != 0);
1055 rss->u.basicvirtual.syn2tupenipv4 =
1056 ((word & FW_RSS_GLB_CONFIG_CMD_SYN2TUPENIPV4_F) != 0);
1057
1058 rss->u.basicvirtual.ofdmapen =
1059 ((word & FW_RSS_GLB_CONFIG_CMD_OFDMAPEN_F) != 0);
1060
1061 rss->u.basicvirtual.tnlmapen =
1062 ((word & FW_RSS_GLB_CONFIG_CMD_TNLMAPEN_F) != 0);
1063 rss->u.basicvirtual.tnlalllookup =
1064 ((word & FW_RSS_GLB_CONFIG_CMD_TNLALLLKP_F) != 0);
1065
1066 rss->u.basicvirtual.hashtoeplitz =
1067 ((word & FW_RSS_GLB_CONFIG_CMD_HASHTOEPLITZ_F) != 0);
1068
1069 /* we need at least Tunnel Map Enable to be set */
1070 if (!rss->u.basicvirtual.tnlmapen)
1071 return -EINVAL;
1072 break;
1073 }
1074
1075 default:
1076 /* all unknown/unsupported RSS modes result in an error */
1077 return -EINVAL;
1078 }
1079
1080 return 0;
1081 }
1082
1083 /**
1084 * t4vf_get_vfres - retrieve VF resource limits
1085 * @adapter: the adapter
1086 *
1087 * Retrieves configured resource limits and capabilities for a virtual
1088 * function. The results are stored in @adapter->vfres.
1089 */
t4vf_get_vfres(struct adapter * adapter)1090 int t4vf_get_vfres(struct adapter *adapter)
1091 {
1092 struct vf_resources *vfres = &adapter->params.vfres;
1093 struct fw_pfvf_cmd cmd, rpl;
1094 int v;
1095 u32 word;
1096
1097 /*
1098 * Execute PFVF Read command to get VF resource limits; bail out early
1099 * with error on command failure.
1100 */
1101 memset(&cmd, 0, sizeof(cmd));
1102 cmd.op_to_vfn = cpu_to_be32(FW_CMD_OP_V(FW_PFVF_CMD) |
1103 FW_CMD_REQUEST_F |
1104 FW_CMD_READ_F);
1105 cmd.retval_len16 = cpu_to_be32(FW_LEN16(cmd));
1106 v = t4vf_wr_mbox(adapter, &cmd, sizeof(cmd), &rpl);
1107 if (v)
1108 return v;
1109
1110 /*
1111 * Extract VF resource limits and return success.
1112 */
1113 word = be32_to_cpu(rpl.niqflint_niq);
1114 vfres->niqflint = FW_PFVF_CMD_NIQFLINT_G(word);
1115 vfres->niq = FW_PFVF_CMD_NIQ_G(word);
1116
1117 word = be32_to_cpu(rpl.type_to_neq);
1118 vfres->neq = FW_PFVF_CMD_NEQ_G(word);
1119 vfres->pmask = FW_PFVF_CMD_PMASK_G(word);
1120
1121 word = be32_to_cpu(rpl.tc_to_nexactf);
1122 vfres->tc = FW_PFVF_CMD_TC_G(word);
1123 vfres->nvi = FW_PFVF_CMD_NVI_G(word);
1124 vfres->nexactf = FW_PFVF_CMD_NEXACTF_G(word);
1125
1126 word = be32_to_cpu(rpl.r_caps_to_nethctrl);
1127 vfres->r_caps = FW_PFVF_CMD_R_CAPS_G(word);
1128 vfres->wx_caps = FW_PFVF_CMD_WX_CAPS_G(word);
1129 vfres->nethctrl = FW_PFVF_CMD_NETHCTRL_G(word);
1130
1131 return 0;
1132 }
1133
1134 /**
1135 * t4vf_read_rss_vi_config - read a VI's RSS configuration
1136 * @adapter: the adapter
1137 * @viid: Virtual Interface ID
1138 * @config: pointer to host-native VI RSS Configuration buffer
1139 *
1140 * Reads the Virtual Interface's RSS configuration information and
1141 * translates it into CPU-native format.
1142 */
t4vf_read_rss_vi_config(struct adapter * adapter,unsigned int viid,union rss_vi_config * config)1143 int t4vf_read_rss_vi_config(struct adapter *adapter, unsigned int viid,
1144 union rss_vi_config *config)
1145 {
1146 struct fw_rss_vi_config_cmd cmd, rpl;
1147 int v;
1148
1149 memset(&cmd, 0, sizeof(cmd));
1150 cmd.op_to_viid = cpu_to_be32(FW_CMD_OP_V(FW_RSS_VI_CONFIG_CMD) |
1151 FW_CMD_REQUEST_F |
1152 FW_CMD_READ_F |
1153 FW_RSS_VI_CONFIG_CMD_VIID(viid));
1154 cmd.retval_len16 = cpu_to_be32(FW_LEN16(cmd));
1155 v = t4vf_wr_mbox(adapter, &cmd, sizeof(cmd), &rpl);
1156 if (v)
1157 return v;
1158
1159 switch (adapter->params.rss.mode) {
1160 case FW_RSS_GLB_CONFIG_CMD_MODE_BASICVIRTUAL: {
1161 u32 word = be32_to_cpu(rpl.u.basicvirtual.defaultq_to_udpen);
1162
1163 config->basicvirtual.ip6fourtupen =
1164 ((word & FW_RSS_VI_CONFIG_CMD_IP6FOURTUPEN_F) != 0);
1165 config->basicvirtual.ip6twotupen =
1166 ((word & FW_RSS_VI_CONFIG_CMD_IP6TWOTUPEN_F) != 0);
1167 config->basicvirtual.ip4fourtupen =
1168 ((word & FW_RSS_VI_CONFIG_CMD_IP4FOURTUPEN_F) != 0);
1169 config->basicvirtual.ip4twotupen =
1170 ((word & FW_RSS_VI_CONFIG_CMD_IP4TWOTUPEN_F) != 0);
1171 config->basicvirtual.udpen =
1172 ((word & FW_RSS_VI_CONFIG_CMD_UDPEN_F) != 0);
1173 config->basicvirtual.defaultq =
1174 FW_RSS_VI_CONFIG_CMD_DEFAULTQ_G(word);
1175 break;
1176 }
1177
1178 default:
1179 return -EINVAL;
1180 }
1181
1182 return 0;
1183 }
1184
1185 /**
1186 * t4vf_write_rss_vi_config - write a VI's RSS configuration
1187 * @adapter: the adapter
1188 * @viid: Virtual Interface ID
1189 * @config: pointer to host-native VI RSS Configuration buffer
1190 *
1191 * Write the Virtual Interface's RSS configuration information
1192 * (translating it into firmware-native format before writing).
1193 */
t4vf_write_rss_vi_config(struct adapter * adapter,unsigned int viid,union rss_vi_config * config)1194 int t4vf_write_rss_vi_config(struct adapter *adapter, unsigned int viid,
1195 union rss_vi_config *config)
1196 {
1197 struct fw_rss_vi_config_cmd cmd, rpl;
1198
1199 memset(&cmd, 0, sizeof(cmd));
1200 cmd.op_to_viid = cpu_to_be32(FW_CMD_OP_V(FW_RSS_VI_CONFIG_CMD) |
1201 FW_CMD_REQUEST_F |
1202 FW_CMD_WRITE_F |
1203 FW_RSS_VI_CONFIG_CMD_VIID(viid));
1204 cmd.retval_len16 = cpu_to_be32(FW_LEN16(cmd));
1205 switch (adapter->params.rss.mode) {
1206 case FW_RSS_GLB_CONFIG_CMD_MODE_BASICVIRTUAL: {
1207 u32 word = 0;
1208
1209 if (config->basicvirtual.ip6fourtupen)
1210 word |= FW_RSS_VI_CONFIG_CMD_IP6FOURTUPEN_F;
1211 if (config->basicvirtual.ip6twotupen)
1212 word |= FW_RSS_VI_CONFIG_CMD_IP6TWOTUPEN_F;
1213 if (config->basicvirtual.ip4fourtupen)
1214 word |= FW_RSS_VI_CONFIG_CMD_IP4FOURTUPEN_F;
1215 if (config->basicvirtual.ip4twotupen)
1216 word |= FW_RSS_VI_CONFIG_CMD_IP4TWOTUPEN_F;
1217 if (config->basicvirtual.udpen)
1218 word |= FW_RSS_VI_CONFIG_CMD_UDPEN_F;
1219 word |= FW_RSS_VI_CONFIG_CMD_DEFAULTQ_V(
1220 config->basicvirtual.defaultq);
1221 cmd.u.basicvirtual.defaultq_to_udpen = cpu_to_be32(word);
1222 break;
1223 }
1224
1225 default:
1226 return -EINVAL;
1227 }
1228
1229 return t4vf_wr_mbox(adapter, &cmd, sizeof(cmd), &rpl);
1230 }
1231
1232 /**
1233 * t4vf_config_rss_range - configure a portion of the RSS mapping table
1234 * @adapter: the adapter
1235 * @viid: Virtual Interface of RSS Table Slice
1236 * @start: starting entry in the table to write
1237 * @n: how many table entries to write
1238 * @rspq: values for the "Response Queue" (Ingress Queue) lookup table
1239 * @nrspq: number of values in @rspq
1240 *
1241 * Programs the selected part of the VI's RSS mapping table with the
1242 * provided values. If @nrspq < @n the supplied values are used repeatedly
1243 * until the full table range is populated.
1244 *
1245 * The caller must ensure the values in @rspq are in the range 0..1023.
1246 */
t4vf_config_rss_range(struct adapter * adapter,unsigned int viid,int start,int n,const u16 * rspq,int nrspq)1247 int t4vf_config_rss_range(struct adapter *adapter, unsigned int viid,
1248 int start, int n, const u16 *rspq, int nrspq)
1249 {
1250 const u16 *rsp = rspq;
1251 const u16 *rsp_end = rspq+nrspq;
1252 struct fw_rss_ind_tbl_cmd cmd;
1253
1254 /*
1255 * Initialize firmware command template to write the RSS table.
1256 */
1257 memset(&cmd, 0, sizeof(cmd));
1258 cmd.op_to_viid = cpu_to_be32(FW_CMD_OP_V(FW_RSS_IND_TBL_CMD) |
1259 FW_CMD_REQUEST_F |
1260 FW_CMD_WRITE_F |
1261 FW_RSS_IND_TBL_CMD_VIID_V(viid));
1262 cmd.retval_len16 = cpu_to_be32(FW_LEN16(cmd));
1263
1264 /*
1265 * Each firmware RSS command can accommodate up to 32 RSS Ingress
1266 * Queue Identifiers. These Ingress Queue IDs are packed three to
1267 * a 32-bit word as 10-bit values with the upper remaining 2 bits
1268 * reserved.
1269 */
1270 while (n > 0) {
1271 __be32 *qp = &cmd.iq0_to_iq2;
1272 int nq = min(n, 32);
1273 int ret;
1274
1275 /*
1276 * Set up the firmware RSS command header to send the next
1277 * "nq" Ingress Queue IDs to the firmware.
1278 */
1279 cmd.niqid = cpu_to_be16(nq);
1280 cmd.startidx = cpu_to_be16(start);
1281
1282 /*
1283 * "nq" more done for the start of the next loop.
1284 */
1285 start += nq;
1286 n -= nq;
1287
1288 /*
1289 * While there are still Ingress Queue IDs to stuff into the
1290 * current firmware RSS command, retrieve them from the
1291 * Ingress Queue ID array and insert them into the command.
1292 */
1293 while (nq > 0) {
1294 /*
1295 * Grab up to the next 3 Ingress Queue IDs (wrapping
1296 * around the Ingress Queue ID array if necessary) and
1297 * insert them into the firmware RSS command at the
1298 * current 3-tuple position within the commad.
1299 */
1300 u16 qbuf[3];
1301 u16 *qbp = qbuf;
1302 int nqbuf = min(3, nq);
1303
1304 nq -= nqbuf;
1305 qbuf[0] = qbuf[1] = qbuf[2] = 0;
1306 while (nqbuf) {
1307 nqbuf--;
1308 *qbp++ = *rsp++;
1309 if (rsp >= rsp_end)
1310 rsp = rspq;
1311 }
1312 *qp++ = cpu_to_be32(FW_RSS_IND_TBL_CMD_IQ0_V(qbuf[0]) |
1313 FW_RSS_IND_TBL_CMD_IQ1_V(qbuf[1]) |
1314 FW_RSS_IND_TBL_CMD_IQ2_V(qbuf[2]));
1315 }
1316
1317 /*
1318 * Send this portion of the RRS table update to the firmware;
1319 * bail out on any errors.
1320 */
1321 ret = t4vf_wr_mbox(adapter, &cmd, sizeof(cmd), NULL);
1322 if (ret)
1323 return ret;
1324 }
1325 return 0;
1326 }
1327
1328 /**
1329 * t4vf_alloc_vi - allocate a virtual interface on a port
1330 * @adapter: the adapter
1331 * @port_id: physical port associated with the VI
1332 *
1333 * Allocate a new Virtual Interface and bind it to the indicated
1334 * physical port. Return the new Virtual Interface Identifier on
1335 * success, or a [negative] error number on failure.
1336 */
t4vf_alloc_vi(struct adapter * adapter,int port_id)1337 int t4vf_alloc_vi(struct adapter *adapter, int port_id)
1338 {
1339 struct fw_vi_cmd cmd, rpl;
1340 int v;
1341
1342 /*
1343 * Execute a VI command to allocate Virtual Interface and return its
1344 * VIID.
1345 */
1346 memset(&cmd, 0, sizeof(cmd));
1347 cmd.op_to_vfn = cpu_to_be32(FW_CMD_OP_V(FW_VI_CMD) |
1348 FW_CMD_REQUEST_F |
1349 FW_CMD_WRITE_F |
1350 FW_CMD_EXEC_F);
1351 cmd.alloc_to_len16 = cpu_to_be32(FW_LEN16(cmd) |
1352 FW_VI_CMD_ALLOC_F);
1353 cmd.portid_pkd = FW_VI_CMD_PORTID_V(port_id);
1354 v = t4vf_wr_mbox(adapter, &cmd, sizeof(cmd), &rpl);
1355 if (v)
1356 return v;
1357
1358 return FW_VI_CMD_VIID_G(be16_to_cpu(rpl.type_viid));
1359 }
1360
1361 /**
1362 * t4vf_free_vi -- free a virtual interface
1363 * @adapter: the adapter
1364 * @viid: the virtual interface identifier
1365 *
1366 * Free a previously allocated Virtual Interface. Return an error on
1367 * failure.
1368 */
t4vf_free_vi(struct adapter * adapter,int viid)1369 int t4vf_free_vi(struct adapter *adapter, int viid)
1370 {
1371 struct fw_vi_cmd cmd;
1372
1373 /*
1374 * Execute a VI command to free the Virtual Interface.
1375 */
1376 memset(&cmd, 0, sizeof(cmd));
1377 cmd.op_to_vfn = cpu_to_be32(FW_CMD_OP_V(FW_VI_CMD) |
1378 FW_CMD_REQUEST_F |
1379 FW_CMD_EXEC_F);
1380 cmd.alloc_to_len16 = cpu_to_be32(FW_LEN16(cmd) |
1381 FW_VI_CMD_FREE_F);
1382 cmd.type_viid = cpu_to_be16(FW_VI_CMD_VIID_V(viid));
1383 return t4vf_wr_mbox(adapter, &cmd, sizeof(cmd), NULL);
1384 }
1385
1386 /**
1387 * t4vf_enable_vi - enable/disable a virtual interface
1388 * @adapter: the adapter
1389 * @viid: the Virtual Interface ID
1390 * @rx_en: 1=enable Rx, 0=disable Rx
1391 * @tx_en: 1=enable Tx, 0=disable Tx
1392 *
1393 * Enables/disables a virtual interface.
1394 */
t4vf_enable_vi(struct adapter * adapter,unsigned int viid,bool rx_en,bool tx_en)1395 int t4vf_enable_vi(struct adapter *adapter, unsigned int viid,
1396 bool rx_en, bool tx_en)
1397 {
1398 struct fw_vi_enable_cmd cmd;
1399
1400 memset(&cmd, 0, sizeof(cmd));
1401 cmd.op_to_viid = cpu_to_be32(FW_CMD_OP_V(FW_VI_ENABLE_CMD) |
1402 FW_CMD_REQUEST_F |
1403 FW_CMD_EXEC_F |
1404 FW_VI_ENABLE_CMD_VIID_V(viid));
1405 cmd.ien_to_len16 = cpu_to_be32(FW_VI_ENABLE_CMD_IEN_V(rx_en) |
1406 FW_VI_ENABLE_CMD_EEN_V(tx_en) |
1407 FW_LEN16(cmd));
1408 return t4vf_wr_mbox(adapter, &cmd, sizeof(cmd), NULL);
1409 }
1410
1411 /**
1412 * t4vf_enable_pi - enable/disable a Port's virtual interface
1413 * @adapter: the adapter
1414 * @pi: the Port Information structure
1415 * @rx_en: 1=enable Rx, 0=disable Rx
1416 * @tx_en: 1=enable Tx, 0=disable Tx
1417 *
1418 * Enables/disables a Port's virtual interface. If the Virtual
1419 * Interface enable/disable operation is successful, we notify the
1420 * OS-specific code of a potential Link Status change via the OS Contract
1421 * API t4vf_os_link_changed().
1422 */
t4vf_enable_pi(struct adapter * adapter,struct port_info * pi,bool rx_en,bool tx_en)1423 int t4vf_enable_pi(struct adapter *adapter, struct port_info *pi,
1424 bool rx_en, bool tx_en)
1425 {
1426 int ret = t4vf_enable_vi(adapter, pi->viid, rx_en, tx_en);
1427
1428 if (ret)
1429 return ret;
1430 t4vf_os_link_changed(adapter, pi->pidx,
1431 rx_en && tx_en && pi->link_cfg.link_ok);
1432 return 0;
1433 }
1434
1435 /**
1436 * t4vf_identify_port - identify a VI's port by blinking its LED
1437 * @adapter: the adapter
1438 * @viid: the Virtual Interface ID
1439 * @nblinks: how many times to blink LED at 2.5 Hz
1440 *
1441 * Identifies a VI's port by blinking its LED.
1442 */
t4vf_identify_port(struct adapter * adapter,unsigned int viid,unsigned int nblinks)1443 int t4vf_identify_port(struct adapter *adapter, unsigned int viid,
1444 unsigned int nblinks)
1445 {
1446 struct fw_vi_enable_cmd cmd;
1447
1448 memset(&cmd, 0, sizeof(cmd));
1449 cmd.op_to_viid = cpu_to_be32(FW_CMD_OP_V(FW_VI_ENABLE_CMD) |
1450 FW_CMD_REQUEST_F |
1451 FW_CMD_EXEC_F |
1452 FW_VI_ENABLE_CMD_VIID_V(viid));
1453 cmd.ien_to_len16 = cpu_to_be32(FW_VI_ENABLE_CMD_LED_F |
1454 FW_LEN16(cmd));
1455 cmd.blinkdur = cpu_to_be16(nblinks);
1456 return t4vf_wr_mbox(adapter, &cmd, sizeof(cmd), NULL);
1457 }
1458
1459 /**
1460 * t4vf_set_rxmode - set Rx properties of a virtual interface
1461 * @adapter: the adapter
1462 * @viid: the VI id
1463 * @mtu: the new MTU or -1 for no change
1464 * @promisc: 1 to enable promiscuous mode, 0 to disable it, -1 no change
1465 * @all_multi: 1 to enable all-multi mode, 0 to disable it, -1 no change
1466 * @bcast: 1 to enable broadcast Rx, 0 to disable it, -1 no change
1467 * @vlanex: 1 to enable hardware VLAN Tag extraction, 0 to disable it,
1468 * -1 no change
1469 * @sleep_ok: call is allowed to sleep
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 * @cmd: 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
t4vf_prep_adapter(struct adapter * adapter)2140 int t4vf_prep_adapter(struct adapter *adapter)
2141 {
2142 int err;
2143 unsigned int chipid;
2144
2145 /* Wait for the device to become ready before proceeding ...
2146 */
2147 err = t4vf_wait_dev_ready(adapter);
2148 if (err)
2149 return err;
2150
2151 /* Default port and clock for debugging in case we can't reach
2152 * firmware.
2153 */
2154 adapter->params.nports = 1;
2155 adapter->params.vfres.pmask = 1;
2156 adapter->params.vpd.cclk = 50000;
2157
2158 adapter->params.chip = 0;
2159 switch (CHELSIO_PCI_ID_VER(adapter->pdev->device)) {
2160 case CHELSIO_T4:
2161 adapter->params.chip |= CHELSIO_CHIP_CODE(CHELSIO_T4, 0);
2162 adapter->params.arch.sge_fl_db = DBPRIO_F;
2163 adapter->params.arch.mps_tcam_size =
2164 NUM_MPS_CLS_SRAM_L_INSTANCES;
2165 break;
2166
2167 case CHELSIO_T5:
2168 chipid = REV_G(t4_read_reg(adapter, PL_VF_REV_A));
2169 adapter->params.chip |= CHELSIO_CHIP_CODE(CHELSIO_T5, chipid);
2170 adapter->params.arch.sge_fl_db = DBPRIO_F | DBTYPE_F;
2171 adapter->params.arch.mps_tcam_size =
2172 NUM_MPS_T5_CLS_SRAM_L_INSTANCES;
2173 break;
2174
2175 case CHELSIO_T6:
2176 chipid = REV_G(t4_read_reg(adapter, PL_VF_REV_A));
2177 adapter->params.chip |= CHELSIO_CHIP_CODE(CHELSIO_T6, chipid);
2178 adapter->params.arch.sge_fl_db = 0;
2179 adapter->params.arch.mps_tcam_size =
2180 NUM_MPS_T5_CLS_SRAM_L_INSTANCES;
2181 break;
2182 }
2183
2184 return 0;
2185 }
2186
2187 /**
2188 * t4vf_get_vf_mac_acl - Get the MAC address to be set to
2189 * the VI of this VF.
2190 * @adapter: The adapter
2191 * @port: The port associated with vf
2192 * @naddr: the number of ACL MAC addresses returned in addr
2193 * @addr: Placeholder for MAC addresses
2194 *
2195 * Find the MAC address to be set to the VF's VI. The requested MAC address
2196 * is from the host OS via callback in the PF driver.
2197 */
t4vf_get_vf_mac_acl(struct adapter * adapter,unsigned int port,unsigned int * naddr,u8 * addr)2198 int t4vf_get_vf_mac_acl(struct adapter *adapter, unsigned int port,
2199 unsigned int *naddr, u8 *addr)
2200 {
2201 struct fw_acl_mac_cmd cmd;
2202 int ret;
2203
2204 memset(&cmd, 0, sizeof(cmd));
2205 cmd.op_to_vfn = cpu_to_be32(FW_CMD_OP_V(FW_ACL_MAC_CMD) |
2206 FW_CMD_REQUEST_F |
2207 FW_CMD_READ_F);
2208 cmd.en_to_len16 = cpu_to_be32((unsigned int)FW_LEN16(cmd));
2209 ret = t4vf_wr_mbox(adapter, &cmd, sizeof(cmd), &cmd);
2210 if (ret)
2211 return ret;
2212
2213 if (cmd.nmac < *naddr)
2214 *naddr = cmd.nmac;
2215
2216 switch (port) {
2217 case 3:
2218 memcpy(addr, cmd.macaddr3, sizeof(cmd.macaddr3));
2219 break;
2220 case 2:
2221 memcpy(addr, cmd.macaddr2, sizeof(cmd.macaddr2));
2222 break;
2223 case 1:
2224 memcpy(addr, cmd.macaddr1, sizeof(cmd.macaddr1));
2225 break;
2226 case 0:
2227 memcpy(addr, cmd.macaddr0, sizeof(cmd.macaddr0));
2228 break;
2229 }
2230
2231 return ret;
2232 }
2233
2234 /**
2235 * t4vf_get_vf_vlan_acl - Get the VLAN ID to be set to
2236 * the VI of this VF.
2237 * @adapter: The adapter
2238 *
2239 * Find the VLAN ID to be set to the VF's VI. The requested VLAN ID
2240 * is from the host OS via callback in the PF driver.
2241 */
t4vf_get_vf_vlan_acl(struct adapter * adapter)2242 int t4vf_get_vf_vlan_acl(struct adapter *adapter)
2243 {
2244 struct fw_acl_vlan_cmd cmd;
2245 int vlan = 0;
2246 int ret = 0;
2247
2248 cmd.op_to_vfn = htonl(FW_CMD_OP_V(FW_ACL_VLAN_CMD) |
2249 FW_CMD_REQUEST_F | FW_CMD_READ_F);
2250
2251 /* Note: Do not enable the ACL */
2252 cmd.en_to_len16 = cpu_to_be32((unsigned int)FW_LEN16(cmd));
2253
2254 ret = t4vf_wr_mbox(adapter, &cmd, sizeof(cmd), &cmd);
2255
2256 if (!ret)
2257 vlan = be16_to_cpu(cmd.vlanid[0]);
2258
2259 return vlan;
2260 }
2261