1 /******************************************************************************
2
3 Copyright (c) 2001-2015, Intel Corporation
4 All rights reserved.
5
6 Redistribution and use in source and binary forms, with or without
7 modification, are permitted provided that the following conditions are met:
8
9 1. Redistributions of source code must retain the above copyright notice,
10 this list of conditions and the following disclaimer.
11
12 2. Redistributions in binary form must reproduce the above copyright
13 notice, this list of conditions and the following disclaimer in the
14 documentation and/or other materials provided with the distribution.
15
16 3. Neither the name of the Intel Corporation nor the names of its
17 contributors may be used to endorse or promote products derived from
18 this software without specific prior written permission.
19
20 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
21 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
24 LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30 POSSIBILITY OF SUCH DAMAGE.
31
32 ******************************************************************************/
33 /*$FreeBSD$*/
34
35
36 #include "ixgbe_api.h"
37 #include "ixgbe_type.h"
38 #include "ixgbe_vf.h"
39
40 #ifndef IXGBE_VFWRITE_REG
41 #define IXGBE_VFWRITE_REG IXGBE_WRITE_REG
42 #endif
43 #ifndef IXGBE_VFREAD_REG
44 #define IXGBE_VFREAD_REG IXGBE_READ_REG
45 #endif
46
47 /**
48 * ixgbe_init_ops_vf - Initialize the pointers for vf
49 * @hw: pointer to hardware structure
50 *
51 * This will assign function pointers, adapter-specific functions can
52 * override the assignment of generic function pointers by assigning
53 * their own adapter-specific function pointers.
54 * Does not touch the hardware.
55 **/
ixgbe_init_ops_vf(struct ixgbe_hw * hw)56 s32 ixgbe_init_ops_vf(struct ixgbe_hw *hw)
57 {
58 /* MAC */
59 hw->mac.ops.init_hw = ixgbe_init_hw_vf;
60 hw->mac.ops.reset_hw = ixgbe_reset_hw_vf;
61 hw->mac.ops.start_hw = ixgbe_start_hw_vf;
62 /* Cannot clear stats on VF */
63 hw->mac.ops.clear_hw_cntrs = NULL;
64 hw->mac.ops.get_media_type = NULL;
65 hw->mac.ops.get_mac_addr = ixgbe_get_mac_addr_vf;
66 hw->mac.ops.stop_adapter = ixgbe_stop_adapter_vf;
67 hw->mac.ops.get_bus_info = NULL;
68
69 /* Link */
70 hw->mac.ops.setup_link = ixgbe_setup_mac_link_vf;
71 hw->mac.ops.check_link = ixgbe_check_mac_link_vf;
72 hw->mac.ops.get_link_capabilities = NULL;
73
74 /* RAR, Multicast, VLAN */
75 hw->mac.ops.set_rar = ixgbe_set_rar_vf;
76 hw->mac.ops.set_uc_addr = ixgbevf_set_uc_addr_vf;
77 hw->mac.ops.init_rx_addrs = NULL;
78 hw->mac.ops.update_mc_addr_list = ixgbe_update_mc_addr_list_vf;
79 hw->mac.ops.enable_mc = NULL;
80 hw->mac.ops.disable_mc = NULL;
81 hw->mac.ops.clear_vfta = NULL;
82 hw->mac.ops.set_vfta = ixgbe_set_vfta_vf;
83
84 hw->mac.max_tx_queues = 1;
85 hw->mac.max_rx_queues = 1;
86
87 hw->mbx.ops.init_params = ixgbe_init_mbx_params_vf;
88
89 return IXGBE_SUCCESS;
90 }
91
92 /* ixgbe_virt_clr_reg - Set register to default (power on) state.
93 * @hw: pointer to hardware structure
94 */
ixgbe_virt_clr_reg(struct ixgbe_hw * hw)95 static void ixgbe_virt_clr_reg(struct ixgbe_hw *hw)
96 {
97 int i;
98 u32 vfsrrctl;
99 u32 vfdca_rxctrl;
100 u32 vfdca_txctrl;
101
102 /* VRSRRCTL default values (BSIZEPACKET = 2048, BSIZEHEADER = 256) */
103 vfsrrctl = 0x100 << IXGBE_SRRCTL_BSIZEHDRSIZE_SHIFT;
104 vfsrrctl |= 0x800 >> IXGBE_SRRCTL_BSIZEPKT_SHIFT;
105
106 /* DCA_RXCTRL default value */
107 vfdca_rxctrl = IXGBE_DCA_RXCTRL_DESC_RRO_EN |
108 IXGBE_DCA_RXCTRL_DATA_WRO_EN |
109 IXGBE_DCA_RXCTRL_HEAD_WRO_EN;
110
111 /* DCA_TXCTRL default value */
112 vfdca_txctrl = IXGBE_DCA_TXCTRL_DESC_RRO_EN |
113 IXGBE_DCA_TXCTRL_DESC_WRO_EN |
114 IXGBE_DCA_TXCTRL_DATA_RRO_EN;
115
116 IXGBE_WRITE_REG(hw, IXGBE_VFPSRTYPE, 0);
117
118 for (i = 0; i < 7; i++) {
119 IXGBE_WRITE_REG(hw, IXGBE_VFRDH(i), 0);
120 IXGBE_WRITE_REG(hw, IXGBE_VFRDT(i), 0);
121 IXGBE_WRITE_REG(hw, IXGBE_VFRXDCTL(i), 0);
122 IXGBE_WRITE_REG(hw, IXGBE_VFSRRCTL(i), vfsrrctl);
123 IXGBE_WRITE_REG(hw, IXGBE_VFTDH(i), 0);
124 IXGBE_WRITE_REG(hw, IXGBE_VFTDT(i), 0);
125 IXGBE_WRITE_REG(hw, IXGBE_VFTXDCTL(i), 0);
126 IXGBE_WRITE_REG(hw, IXGBE_VFTDWBAH(i), 0);
127 IXGBE_WRITE_REG(hw, IXGBE_VFTDWBAL(i), 0);
128 IXGBE_WRITE_REG(hw, IXGBE_VFDCA_RXCTRL(i), vfdca_rxctrl);
129 IXGBE_WRITE_REG(hw, IXGBE_VFDCA_TXCTRL(i), vfdca_txctrl);
130 }
131
132 IXGBE_WRITE_FLUSH(hw);
133 }
134
135 /**
136 * ixgbe_start_hw_vf - Prepare hardware for Tx/Rx
137 * @hw: pointer to hardware structure
138 *
139 * Starts the hardware by filling the bus info structure and media type, clears
140 * all on chip counters, initializes receive address registers, multicast
141 * table, VLAN filter table, calls routine to set up link and flow control
142 * settings, and leaves transmit and receive units disabled and uninitialized
143 **/
ixgbe_start_hw_vf(struct ixgbe_hw * hw)144 s32 ixgbe_start_hw_vf(struct ixgbe_hw *hw)
145 {
146 /* Clear adapter stopped flag */
147 hw->adapter_stopped = FALSE;
148
149 return IXGBE_SUCCESS;
150 }
151
152 /**
153 * ixgbe_init_hw_vf - virtual function hardware initialization
154 * @hw: pointer to hardware structure
155 *
156 * Initialize the hardware by resetting the hardware and then starting
157 * the hardware
158 **/
ixgbe_init_hw_vf(struct ixgbe_hw * hw)159 s32 ixgbe_init_hw_vf(struct ixgbe_hw *hw)
160 {
161 s32 status = hw->mac.ops.start_hw(hw);
162
163 hw->mac.ops.get_mac_addr(hw, hw->mac.addr);
164
165 return status;
166 }
167
168 /**
169 * ixgbe_reset_hw_vf - Performs hardware reset
170 * @hw: pointer to hardware structure
171 *
172 * Resets the hardware by reseting the transmit and receive units, masks and
173 * clears all interrupts.
174 **/
ixgbe_reset_hw_vf(struct ixgbe_hw * hw)175 s32 ixgbe_reset_hw_vf(struct ixgbe_hw *hw)
176 {
177 struct ixgbe_mbx_info *mbx = &hw->mbx;
178 u32 timeout = IXGBE_VF_INIT_TIMEOUT;
179 s32 ret_val = IXGBE_ERR_INVALID_MAC_ADDR;
180 u32 msgbuf[IXGBE_VF_PERMADDR_MSG_LEN];
181 u8 *addr = (u8 *)(&msgbuf[1]);
182
183 DEBUGFUNC("ixgbevf_reset_hw_vf");
184
185 /* Call adapter stop to disable tx/rx and clear interrupts */
186 hw->mac.ops.stop_adapter(hw);
187
188
189 DEBUGOUT("Issuing a function level reset to MAC\n");
190
191 IXGBE_VFWRITE_REG(hw, IXGBE_VFCTRL, IXGBE_CTRL_RST);
192 IXGBE_WRITE_FLUSH(hw);
193
194 msec_delay(50);
195
196 /* we cannot reset while the RSTI / RSTD bits are asserted */
197 while (!mbx->ops.check_for_rst(hw, 0) && timeout) {
198 timeout--;
199 usec_delay(5);
200 }
201
202 if (!timeout)
203 return IXGBE_ERR_RESET_FAILED;
204
205 /* Reset VF registers to initial values */
206 ixgbe_virt_clr_reg(hw);
207
208 /* mailbox timeout can now become active */
209 mbx->timeout = IXGBE_VF_MBX_INIT_TIMEOUT;
210
211 msgbuf[0] = IXGBE_VF_RESET;
212 mbx->ops.write_posted(hw, msgbuf, 1, 0);
213
214 msec_delay(10);
215
216 /*
217 * set our "perm_addr" based on info provided by PF
218 * also set up the mc_filter_type which is piggy backed
219 * on the mac address in word 3
220 */
221 ret_val = mbx->ops.read_posted(hw, msgbuf,
222 IXGBE_VF_PERMADDR_MSG_LEN, 0);
223 if (ret_val)
224 return ret_val;
225
226 if (msgbuf[0] != (IXGBE_VF_RESET | IXGBE_VT_MSGTYPE_ACK) &&
227 msgbuf[0] != (IXGBE_VF_RESET | IXGBE_VT_MSGTYPE_NACK))
228 return IXGBE_ERR_INVALID_MAC_ADDR;
229
230 memcpy(hw->mac.perm_addr, addr, IXGBE_ETH_LENGTH_OF_ADDRESS);
231 hw->mac.mc_filter_type = msgbuf[IXGBE_VF_MC_TYPE_WORD];
232
233 return ret_val;
234 }
235
236 /**
237 * ixgbe_stop_adapter_vf - Generic stop Tx/Rx units
238 * @hw: pointer to hardware structure
239 *
240 * Sets the adapter_stopped flag within ixgbe_hw struct. Clears interrupts,
241 * disables transmit and receive units. The adapter_stopped flag is used by
242 * the shared code and drivers to determine if the adapter is in a stopped
243 * state and should not touch the hardware.
244 **/
ixgbe_stop_adapter_vf(struct ixgbe_hw * hw)245 s32 ixgbe_stop_adapter_vf(struct ixgbe_hw *hw)
246 {
247 u32 reg_val;
248 u16 i;
249
250 /*
251 * Set the adapter_stopped flag so other driver functions stop touching
252 * the hardware
253 */
254 hw->adapter_stopped = TRUE;
255
256 /* Clear interrupt mask to stop from interrupts being generated */
257 IXGBE_VFWRITE_REG(hw, IXGBE_VTEIMC, IXGBE_VF_IRQ_CLEAR_MASK);
258
259 /* Clear any pending interrupts, flush previous writes */
260 IXGBE_VFREAD_REG(hw, IXGBE_VTEICR);
261
262 /* Disable the transmit unit. Each queue must be disabled. */
263 for (i = 0; i < hw->mac.max_tx_queues; i++)
264 IXGBE_VFWRITE_REG(hw, IXGBE_VFTXDCTL(i), IXGBE_TXDCTL_SWFLSH);
265
266 /* Disable the receive unit by stopping each queue */
267 for (i = 0; i < hw->mac.max_rx_queues; i++) {
268 reg_val = IXGBE_VFREAD_REG(hw, IXGBE_VFRXDCTL(i));
269 reg_val &= ~IXGBE_RXDCTL_ENABLE;
270 IXGBE_VFWRITE_REG(hw, IXGBE_VFRXDCTL(i), reg_val);
271 }
272 /* Clear packet split and pool config */
273 IXGBE_WRITE_REG(hw, IXGBE_VFPSRTYPE, 0);
274
275 /* flush all queues disables */
276 IXGBE_WRITE_FLUSH(hw);
277 msec_delay(2);
278
279 return IXGBE_SUCCESS;
280 }
281
282 /**
283 * ixgbe_mta_vector - Determines bit-vector in multicast table to set
284 * @hw: pointer to hardware structure
285 * @mc_addr: the multicast address
286 *
287 * Extracts the 12 bits, from a multicast address, to determine which
288 * bit-vector to set in the multicast table. The hardware uses 12 bits, from
289 * incoming rx multicast addresses, to determine the bit-vector to check in
290 * the MTA. Which of the 4 combination, of 12-bits, the hardware uses is set
291 * by the MO field of the MCSTCTRL. The MO field is set during initialization
292 * to mc_filter_type.
293 **/
ixgbe_mta_vector(struct ixgbe_hw * hw,u8 * mc_addr)294 static s32 ixgbe_mta_vector(struct ixgbe_hw *hw, u8 *mc_addr)
295 {
296 u32 vector = 0;
297
298 switch (hw->mac.mc_filter_type) {
299 case 0: /* use bits [47:36] of the address */
300 vector = ((mc_addr[4] >> 4) | (((u16)mc_addr[5]) << 4));
301 break;
302 case 1: /* use bits [46:35] of the address */
303 vector = ((mc_addr[4] >> 3) | (((u16)mc_addr[5]) << 5));
304 break;
305 case 2: /* use bits [45:34] of the address */
306 vector = ((mc_addr[4] >> 2) | (((u16)mc_addr[5]) << 6));
307 break;
308 case 3: /* use bits [43:32] of the address */
309 vector = ((mc_addr[4]) | (((u16)mc_addr[5]) << 8));
310 break;
311 default: /* Invalid mc_filter_type */
312 DEBUGOUT("MC filter type param set incorrectly\n");
313 ASSERT(0);
314 break;
315 }
316
317 /* vector can only be 12-bits or boundary will be exceeded */
318 vector &= 0xFFF;
319 return vector;
320 }
321
ixgbevf_write_msg_read_ack(struct ixgbe_hw * hw,u32 * msg,u16 size)322 static void ixgbevf_write_msg_read_ack(struct ixgbe_hw *hw,
323 u32 *msg, u16 size)
324 {
325 struct ixgbe_mbx_info *mbx = &hw->mbx;
326 u32 retmsg[IXGBE_VFMAILBOX_SIZE];
327 s32 retval = mbx->ops.write_posted(hw, msg, size, 0);
328
329 if (!retval)
330 mbx->ops.read_posted(hw, retmsg, size, 0);
331 }
332
333 /**
334 * ixgbe_set_rar_vf - set device MAC address
335 * @hw: pointer to hardware structure
336 * @index: Receive address register to write
337 * @addr: Address to put into receive address register
338 * @vmdq: VMDq "set" or "pool" index
339 * @enable_addr: set flag that address is active
340 **/
ixgbe_set_rar_vf(struct ixgbe_hw * hw,u32 index,u8 * addr,u32 vmdq,u32 enable_addr)341 s32 ixgbe_set_rar_vf(struct ixgbe_hw *hw, u32 index, u8 *addr, u32 vmdq,
342 u32 enable_addr)
343 {
344 struct ixgbe_mbx_info *mbx = &hw->mbx;
345 u32 msgbuf[3];
346 u8 *msg_addr = (u8 *)(&msgbuf[1]);
347 s32 ret_val;
348 UNREFERENCED_3PARAMETER(vmdq, enable_addr, index);
349
350 memset(msgbuf, 0, 12);
351 msgbuf[0] = IXGBE_VF_SET_MAC_ADDR;
352 memcpy(msg_addr, addr, 6);
353 ret_val = mbx->ops.write_posted(hw, msgbuf, 3, 0);
354
355 if (!ret_val)
356 ret_val = mbx->ops.read_posted(hw, msgbuf, 3, 0);
357
358 msgbuf[0] &= ~IXGBE_VT_MSGTYPE_CTS;
359
360 /* if nacked the address was rejected, use "perm_addr" */
361 if (!ret_val &&
362 (msgbuf[0] == (IXGBE_VF_SET_MAC_ADDR | IXGBE_VT_MSGTYPE_NACK)))
363 ixgbe_get_mac_addr_vf(hw, hw->mac.addr);
364
365 return ret_val;
366 }
367
368 /**
369 * ixgbe_update_mc_addr_list_vf - Update Multicast addresses
370 * @hw: pointer to the HW structure
371 * @mc_addr_list: array of multicast addresses to program
372 * @mc_addr_count: number of multicast addresses to program
373 * @next: caller supplied function to return next address in list
374 *
375 * Updates the Multicast Table Array.
376 **/
ixgbe_update_mc_addr_list_vf(struct ixgbe_hw * hw,u8 * mc_addr_list,u32 mc_addr_count,ixgbe_mc_addr_itr next,bool clear)377 s32 ixgbe_update_mc_addr_list_vf(struct ixgbe_hw *hw, u8 *mc_addr_list,
378 u32 mc_addr_count, ixgbe_mc_addr_itr next,
379 bool clear)
380 {
381 struct ixgbe_mbx_info *mbx = &hw->mbx;
382 u32 msgbuf[IXGBE_VFMAILBOX_SIZE];
383 u16 *vector_list = (u16 *)&msgbuf[1];
384 u32 vector;
385 u32 cnt, i;
386 u32 vmdq;
387
388 UNREFERENCED_1PARAMETER(clear);
389
390 DEBUGFUNC("ixgbe_update_mc_addr_list_vf");
391
392 /* Each entry in the list uses 1 16 bit word. We have 30
393 * 16 bit words available in our HW msg buffer (minus 1 for the
394 * msg type). That's 30 hash values if we pack 'em right. If
395 * there are more than 30 MC addresses to add then punt the
396 * extras for now and then add code to handle more than 30 later.
397 * It would be unusual for a server to request that many multi-cast
398 * addresses except for in large enterprise network environments.
399 */
400
401 DEBUGOUT1("MC Addr Count = %d\n", mc_addr_count);
402
403 cnt = (mc_addr_count > 30) ? 30 : mc_addr_count;
404 msgbuf[0] = IXGBE_VF_SET_MULTICAST;
405 msgbuf[0] |= cnt << IXGBE_VT_MSGINFO_SHIFT;
406
407 for (i = 0; i < cnt; i++) {
408 vector = ixgbe_mta_vector(hw, next(hw, &mc_addr_list, &vmdq));
409 DEBUGOUT1("Hash value = 0x%03X\n", vector);
410 vector_list[i] = (u16)vector;
411 }
412
413 return mbx->ops.write_posted(hw, msgbuf, IXGBE_VFMAILBOX_SIZE, 0);
414 }
415
416 /**
417 * ixgbe_set_vfta_vf - Set/Unset vlan filter table address
418 * @hw: pointer to the HW structure
419 * @vlan: 12 bit VLAN ID
420 * @vind: unused by VF drivers
421 * @vlan_on: if TRUE then set bit, else clear bit
422 **/
ixgbe_set_vfta_vf(struct ixgbe_hw * hw,u32 vlan,u32 vind,bool vlan_on)423 s32 ixgbe_set_vfta_vf(struct ixgbe_hw *hw, u32 vlan, u32 vind, bool vlan_on)
424 {
425 struct ixgbe_mbx_info *mbx = &hw->mbx;
426 u32 msgbuf[2];
427 s32 ret_val;
428 UNREFERENCED_1PARAMETER(vind);
429
430 msgbuf[0] = IXGBE_VF_SET_VLAN;
431 msgbuf[1] = vlan;
432 /* Setting the 8 bit field MSG INFO to TRUE indicates "add" */
433 msgbuf[0] |= vlan_on << IXGBE_VT_MSGINFO_SHIFT;
434
435 ret_val = mbx->ops.write_posted(hw, msgbuf, 2, 0);
436 if (!ret_val)
437 ret_val = mbx->ops.read_posted(hw, msgbuf, 1, 0);
438
439 if (!ret_val && (msgbuf[0] & IXGBE_VT_MSGTYPE_ACK))
440 return IXGBE_SUCCESS;
441
442 return ret_val | (msgbuf[0] & IXGBE_VT_MSGTYPE_NACK);
443 }
444
445 /**
446 * ixgbe_get_num_of_tx_queues_vf - Get number of TX queues
447 * @hw: pointer to hardware structure
448 *
449 * Returns the number of transmit queues for the given adapter.
450 **/
ixgbe_get_num_of_tx_queues_vf(struct ixgbe_hw * hw)451 u32 ixgbe_get_num_of_tx_queues_vf(struct ixgbe_hw *hw)
452 {
453 UNREFERENCED_1PARAMETER(hw);
454 return IXGBE_VF_MAX_TX_QUEUES;
455 }
456
457 /**
458 * ixgbe_get_num_of_rx_queues_vf - Get number of RX queues
459 * @hw: pointer to hardware structure
460 *
461 * Returns the number of receive queues for the given adapter.
462 **/
ixgbe_get_num_of_rx_queues_vf(struct ixgbe_hw * hw)463 u32 ixgbe_get_num_of_rx_queues_vf(struct ixgbe_hw *hw)
464 {
465 UNREFERENCED_1PARAMETER(hw);
466 return IXGBE_VF_MAX_RX_QUEUES;
467 }
468
469 /**
470 * ixgbe_get_mac_addr_vf - Read device MAC address
471 * @hw: pointer to the HW structure
472 **/
ixgbe_get_mac_addr_vf(struct ixgbe_hw * hw,u8 * mac_addr)473 s32 ixgbe_get_mac_addr_vf(struct ixgbe_hw *hw, u8 *mac_addr)
474 {
475 int i;
476
477 for (i = 0; i < IXGBE_ETH_LENGTH_OF_ADDRESS; i++)
478 mac_addr[i] = hw->mac.perm_addr[i];
479
480 return IXGBE_SUCCESS;
481 }
482
ixgbevf_set_uc_addr_vf(struct ixgbe_hw * hw,u32 index,u8 * addr)483 s32 ixgbevf_set_uc_addr_vf(struct ixgbe_hw *hw, u32 index, u8 *addr)
484 {
485 struct ixgbe_mbx_info *mbx = &hw->mbx;
486 u32 msgbuf[3];
487 u8 *msg_addr = (u8 *)(&msgbuf[1]);
488 s32 ret_val;
489
490 memset(msgbuf, 0, sizeof(msgbuf));
491 /*
492 * If index is one then this is the start of a new list and needs
493 * indication to the PF so it can do it's own list management.
494 * If it is zero then that tells the PF to just clear all of
495 * this VF's macvlans and there is no new list.
496 */
497 msgbuf[0] |= index << IXGBE_VT_MSGINFO_SHIFT;
498 msgbuf[0] |= IXGBE_VF_SET_MACVLAN;
499 if (addr)
500 memcpy(msg_addr, addr, 6);
501 ret_val = mbx->ops.write_posted(hw, msgbuf, 3, 0);
502
503 if (!ret_val)
504 ret_val = mbx->ops.read_posted(hw, msgbuf, 3, 0);
505
506 msgbuf[0] &= ~IXGBE_VT_MSGTYPE_CTS;
507
508 if (!ret_val)
509 if (msgbuf[0] == (IXGBE_VF_SET_MACVLAN | IXGBE_VT_MSGTYPE_NACK))
510 ret_val = IXGBE_ERR_OUT_OF_MEM;
511
512 return ret_val;
513 }
514
515 /**
516 * ixgbe_setup_mac_link_vf - Setup MAC link settings
517 * @hw: pointer to hardware structure
518 * @speed: new link speed
519 * @autoneg: TRUE if autonegotiation enabled
520 * @autoneg_wait_to_complete: TRUE when waiting for completion is needed
521 *
522 * Set the link speed in the AUTOC register and restarts link.
523 **/
ixgbe_setup_mac_link_vf(struct ixgbe_hw * hw,ixgbe_link_speed speed,bool autoneg_wait_to_complete)524 s32 ixgbe_setup_mac_link_vf(struct ixgbe_hw *hw, ixgbe_link_speed speed,
525 bool autoneg_wait_to_complete)
526 {
527 UNREFERENCED_3PARAMETER(hw, speed, autoneg_wait_to_complete);
528 return IXGBE_SUCCESS;
529 }
530
531 /**
532 * ixgbe_check_mac_link_vf - Get link/speed status
533 * @hw: pointer to hardware structure
534 * @speed: pointer to link speed
535 * @link_up: TRUE is link is up, FALSE otherwise
536 * @autoneg_wait_to_complete: TRUE when waiting for completion is needed
537 *
538 * Reads the links register to determine if link is up and the current speed
539 **/
ixgbe_check_mac_link_vf(struct ixgbe_hw * hw,ixgbe_link_speed * speed,bool * link_up,bool autoneg_wait_to_complete)540 s32 ixgbe_check_mac_link_vf(struct ixgbe_hw *hw, ixgbe_link_speed *speed,
541 bool *link_up, bool autoneg_wait_to_complete)
542 {
543 struct ixgbe_mbx_info *mbx = &hw->mbx;
544 struct ixgbe_mac_info *mac = &hw->mac;
545 s32 ret_val = IXGBE_SUCCESS;
546 u32 links_reg;
547 u32 in_msg = 0;
548 UNREFERENCED_1PARAMETER(autoneg_wait_to_complete);
549
550 /* If we were hit with a reset drop the link */
551 if (!mbx->ops.check_for_rst(hw, 0) || !mbx->timeout)
552 mac->get_link_status = TRUE;
553
554 if (!mac->get_link_status)
555 goto out;
556
557 /* if link status is down no point in checking to see if pf is up */
558 links_reg = IXGBE_READ_REG(hw, IXGBE_VFLINKS);
559 if (!(links_reg & IXGBE_LINKS_UP))
560 goto out;
561
562 /* for SFP+ modules and DA cables on 82599 it can take up to 500usecs
563 * before the link status is correct
564 */
565 if (mac->type == ixgbe_mac_82599_vf) {
566 int i;
567
568 for (i = 0; i < 5; i++) {
569 usec_delay(100);
570 links_reg = IXGBE_READ_REG(hw, IXGBE_VFLINKS);
571
572 if (!(links_reg & IXGBE_LINKS_UP))
573 goto out;
574 }
575 }
576
577 switch (links_reg & IXGBE_LINKS_SPEED_82599) {
578 case IXGBE_LINKS_SPEED_10G_82599:
579 *speed = IXGBE_LINK_SPEED_10GB_FULL;
580 break;
581 case IXGBE_LINKS_SPEED_1G_82599:
582 *speed = IXGBE_LINK_SPEED_1GB_FULL;
583 break;
584 case IXGBE_LINKS_SPEED_100_82599:
585 *speed = IXGBE_LINK_SPEED_100_FULL;
586 break;
587 }
588
589 /* if the read failed it could just be a mailbox collision, best wait
590 * until we are called again and don't report an error
591 */
592 if (mbx->ops.read(hw, &in_msg, 1, 0))
593 goto out;
594
595 if (!(in_msg & IXGBE_VT_MSGTYPE_CTS)) {
596 /* msg is not CTS and is NACK we must have lost CTS status */
597 if (in_msg & IXGBE_VT_MSGTYPE_NACK)
598 ret_val = -1;
599 goto out;
600 }
601
602 /* the pf is talking, if we timed out in the past we reinit */
603 if (!mbx->timeout) {
604 ret_val = -1;
605 goto out;
606 }
607
608 /* if we passed all the tests above then the link is up and we no
609 * longer need to check for link
610 */
611 mac->get_link_status = FALSE;
612
613 out:
614 *link_up = !mac->get_link_status;
615 return ret_val;
616 }
617
618 /**
619 * ixgbevf_rlpml_set_vf - Set the maximum receive packet length
620 * @hw: pointer to the HW structure
621 * @max_size: value to assign to max frame size
622 **/
ixgbevf_rlpml_set_vf(struct ixgbe_hw * hw,u16 max_size)623 void ixgbevf_rlpml_set_vf(struct ixgbe_hw *hw, u16 max_size)
624 {
625 u32 msgbuf[2];
626
627 msgbuf[0] = IXGBE_VF_SET_LPE;
628 msgbuf[1] = max_size;
629 ixgbevf_write_msg_read_ack(hw, msgbuf, 2);
630 }
631
632 /**
633 * ixgbevf_negotiate_api_version - Negotiate supported API version
634 * @hw: pointer to the HW structure
635 * @api: integer containing requested API version
636 **/
ixgbevf_negotiate_api_version(struct ixgbe_hw * hw,int api)637 int ixgbevf_negotiate_api_version(struct ixgbe_hw *hw, int api)
638 {
639 int err;
640 u32 msg[3];
641
642 /* Negotiate the mailbox API version */
643 msg[0] = IXGBE_VF_API_NEGOTIATE;
644 msg[1] = api;
645 msg[2] = 0;
646 err = hw->mbx.ops.write_posted(hw, msg, 3, 0);
647
648 if (!err)
649 err = hw->mbx.ops.read_posted(hw, msg, 3, 0);
650
651 if (!err) {
652 msg[0] &= ~IXGBE_VT_MSGTYPE_CTS;
653
654 /* Store value and return 0 on success */
655 if (msg[0] == (IXGBE_VF_API_NEGOTIATE | IXGBE_VT_MSGTYPE_ACK)) {
656 hw->api_version = api;
657 return 0;
658 }
659
660 err = IXGBE_ERR_INVALID_ARGUMENT;
661 }
662
663 return err;
664 }
665
ixgbevf_get_queues(struct ixgbe_hw * hw,unsigned int * num_tcs,unsigned int * default_tc)666 int ixgbevf_get_queues(struct ixgbe_hw *hw, unsigned int *num_tcs,
667 unsigned int *default_tc)
668 {
669 UNREFERENCED_3PARAMETER(hw, num_tcs, default_tc);
670 return IXGBE_SUCCESS;
671 }
672