1 /*******************************************************************************
2 
3   Intel 10 Gigabit PCI Express Linux driver
4   Copyright(c) 1999 - 2016 Intel Corporation.
5 
6   This program is free software; you can redistribute it and/or modify it
7   under the terms and conditions of the GNU General Public License,
8   version 2, as published by the Free Software Foundation.
9 
10   This program is distributed in the hope it will be useful, but WITHOUT
11   ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12   FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
13   more details.
14 
15   You should have received a copy of the GNU General Public License along with
16   this program; if not, write to the Free Software Foundation, Inc.,
17   51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
18 
19   The full GNU General Public License is included in this distribution in
20   the file called "COPYING".
21 
22   Contact Information:
23   Linux NICS <linux.nics@intel.com>
24   e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
25   Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
26 
27 *******************************************************************************/
28 
29 #include <linux/pci.h>
30 #include <linux/delay.h>
31 #include <linux/sched.h>
32 
33 #include "ixgbe.h"
34 #include "ixgbe_phy.h"
35 
36 #define IXGBE_82598_MAX_TX_QUEUES 32
37 #define IXGBE_82598_MAX_RX_QUEUES 64
38 #define IXGBE_82598_RAR_ENTRIES   16
39 #define IXGBE_82598_MC_TBL_SIZE  128
40 #define IXGBE_82598_VFT_TBL_SIZE 128
41 #define IXGBE_82598_RX_PB_SIZE	 512
42 
43 static s32 ixgbe_setup_copper_link_82598(struct ixgbe_hw *hw,
44 					 ixgbe_link_speed speed,
45 					 bool autoneg_wait_to_complete);
46 static s32 ixgbe_read_i2c_eeprom_82598(struct ixgbe_hw *hw, u8 byte_offset,
47 				       u8 *eeprom_data);
48 
49 /**
50  *  ixgbe_set_pcie_completion_timeout - set pci-e completion timeout
51  *  @hw: pointer to the HW structure
52  *
53  *  The defaults for 82598 should be in the range of 50us to 50ms,
54  *  however the hardware default for these parts is 500us to 1ms which is less
55  *  than the 10ms recommended by the pci-e spec.  To address this we need to
56  *  increase the value to either 10ms to 250ms for capability version 1 config,
57  *  or 16ms to 55ms for version 2.
58  **/
59 static void ixgbe_set_pcie_completion_timeout(struct ixgbe_hw *hw)
60 {
61 	u32 gcr = IXGBE_READ_REG(hw, IXGBE_GCR);
62 	u16 pcie_devctl2;
63 
64 	if (ixgbe_removed(hw->hw_addr))
65 		return;
66 
67 	/* only take action if timeout value is defaulted to 0 */
68 	if (gcr & IXGBE_GCR_CMPL_TMOUT_MASK)
69 		goto out;
70 
71 	/*
72 	 * if capababilities version is type 1 we can write the
73 	 * timeout of 10ms to 250ms through the GCR register
74 	 */
75 	if (!(gcr & IXGBE_GCR_CAP_VER2)) {
76 		gcr |= IXGBE_GCR_CMPL_TMOUT_10ms;
77 		goto out;
78 	}
79 
80 	/*
81 	 * for version 2 capabilities we need to write the config space
82 	 * directly in order to set the completion timeout value for
83 	 * 16ms to 55ms
84 	 */
85 	pcie_devctl2 = ixgbe_read_pci_cfg_word(hw, IXGBE_PCI_DEVICE_CONTROL2);
86 	pcie_devctl2 |= IXGBE_PCI_DEVICE_CONTROL2_16ms;
87 	ixgbe_write_pci_cfg_word(hw, IXGBE_PCI_DEVICE_CONTROL2, pcie_devctl2);
88 out:
89 	/* disable completion timeout resend */
90 	gcr &= ~IXGBE_GCR_CMPL_TMOUT_RESEND;
91 	IXGBE_WRITE_REG(hw, IXGBE_GCR, gcr);
92 }
93 
94 static s32 ixgbe_get_invariants_82598(struct ixgbe_hw *hw)
95 {
96 	struct ixgbe_mac_info *mac = &hw->mac;
97 
98 	/* Call PHY identify routine to get the phy type */
99 	ixgbe_identify_phy_generic(hw);
100 
101 	mac->mcft_size = IXGBE_82598_MC_TBL_SIZE;
102 	mac->vft_size = IXGBE_82598_VFT_TBL_SIZE;
103 	mac->num_rar_entries = IXGBE_82598_RAR_ENTRIES;
104 	mac->rx_pb_size = IXGBE_82598_RX_PB_SIZE;
105 	mac->max_rx_queues = IXGBE_82598_MAX_RX_QUEUES;
106 	mac->max_tx_queues = IXGBE_82598_MAX_TX_QUEUES;
107 	mac->max_msix_vectors = ixgbe_get_pcie_msix_count_generic(hw);
108 
109 	return 0;
110 }
111 
112 /**
113  *  ixgbe_init_phy_ops_82598 - PHY/SFP specific init
114  *  @hw: pointer to hardware structure
115  *
116  *  Initialize any function pointers that were not able to be
117  *  set during get_invariants because the PHY/SFP type was
118  *  not known.  Perform the SFP init if necessary.
119  *
120  **/
121 static s32 ixgbe_init_phy_ops_82598(struct ixgbe_hw *hw)
122 {
123 	struct ixgbe_mac_info *mac = &hw->mac;
124 	struct ixgbe_phy_info *phy = &hw->phy;
125 	s32 ret_val;
126 	u16 list_offset, data_offset;
127 
128 	/* Identify the PHY */
129 	phy->ops.identify(hw);
130 
131 	/* Overwrite the link function pointers if copper PHY */
132 	if (mac->ops.get_media_type(hw) == ixgbe_media_type_copper) {
133 		mac->ops.setup_link = &ixgbe_setup_copper_link_82598;
134 		mac->ops.get_link_capabilities =
135 			&ixgbe_get_copper_link_capabilities_generic;
136 	}
137 
138 	switch (hw->phy.type) {
139 	case ixgbe_phy_tn:
140 		phy->ops.setup_link = &ixgbe_setup_phy_link_tnx;
141 		phy->ops.check_link = &ixgbe_check_phy_link_tnx;
142 		break;
143 	case ixgbe_phy_nl:
144 		phy->ops.reset = &ixgbe_reset_phy_nl;
145 
146 		/* Call SFP+ identify routine to get the SFP+ module type */
147 		ret_val = phy->ops.identify_sfp(hw);
148 		if (ret_val)
149 			return ret_val;
150 		if (hw->phy.sfp_type == ixgbe_sfp_type_unknown)
151 			return IXGBE_ERR_SFP_NOT_SUPPORTED;
152 
153 		/* Check to see if SFP+ module is supported */
154 		ret_val = ixgbe_get_sfp_init_sequence_offsets(hw,
155 							    &list_offset,
156 							    &data_offset);
157 		if (ret_val)
158 			return IXGBE_ERR_SFP_NOT_SUPPORTED;
159 		break;
160 	default:
161 		break;
162 	}
163 
164 	return 0;
165 }
166 
167 /**
168  *  ixgbe_start_hw_82598 - Prepare hardware for Tx/Rx
169  *  @hw: pointer to hardware structure
170  *
171  *  Starts the hardware using the generic start_hw function.
172  *  Disables relaxed ordering for archs other than SPARC
173  *  Then set pcie completion timeout
174  *
175  **/
176 static s32 ixgbe_start_hw_82598(struct ixgbe_hw *hw)
177 {
178 #ifndef CONFIG_SPARC
179 	u32 regval;
180 	u32 i;
181 #endif
182 	s32 ret_val;
183 
184 	ret_val = ixgbe_start_hw_generic(hw);
185 
186 #ifndef CONFIG_SPARC
187 	/* Disable relaxed ordering */
188 	for (i = 0; ((i < hw->mac.max_tx_queues) &&
189 	     (i < IXGBE_DCA_MAX_QUEUES_82598)); i++) {
190 		regval = IXGBE_READ_REG(hw, IXGBE_DCA_TXCTRL(i));
191 		regval &= ~IXGBE_DCA_TXCTRL_DESC_WRO_EN;
192 		IXGBE_WRITE_REG(hw, IXGBE_DCA_TXCTRL(i), regval);
193 	}
194 
195 	for (i = 0; ((i < hw->mac.max_rx_queues) &&
196 	     (i < IXGBE_DCA_MAX_QUEUES_82598)); i++) {
197 		regval = IXGBE_READ_REG(hw, IXGBE_DCA_RXCTRL(i));
198 		regval &= ~(IXGBE_DCA_RXCTRL_DATA_WRO_EN |
199 			    IXGBE_DCA_RXCTRL_HEAD_WRO_EN);
200 		IXGBE_WRITE_REG(hw, IXGBE_DCA_RXCTRL(i), regval);
201 	}
202 #endif
203 	if (ret_val)
204 		return ret_val;
205 
206 	/* set the completion timeout for interface */
207 	ixgbe_set_pcie_completion_timeout(hw);
208 
209 	return 0;
210 }
211 
212 /**
213  *  ixgbe_get_link_capabilities_82598 - Determines link capabilities
214  *  @hw: pointer to hardware structure
215  *  @speed: pointer to link speed
216  *  @autoneg: boolean auto-negotiation value
217  *
218  *  Determines the link capabilities by reading the AUTOC register.
219  **/
220 static s32 ixgbe_get_link_capabilities_82598(struct ixgbe_hw *hw,
221 					     ixgbe_link_speed *speed,
222 					     bool *autoneg)
223 {
224 	u32 autoc = 0;
225 
226 	/*
227 	 * Determine link capabilities based on the stored value of AUTOC,
228 	 * which represents EEPROM defaults.  If AUTOC value has not been
229 	 * stored, use the current register value.
230 	 */
231 	if (hw->mac.orig_link_settings_stored)
232 		autoc = hw->mac.orig_autoc;
233 	else
234 		autoc = IXGBE_READ_REG(hw, IXGBE_AUTOC);
235 
236 	switch (autoc & IXGBE_AUTOC_LMS_MASK) {
237 	case IXGBE_AUTOC_LMS_1G_LINK_NO_AN:
238 		*speed = IXGBE_LINK_SPEED_1GB_FULL;
239 		*autoneg = false;
240 		break;
241 
242 	case IXGBE_AUTOC_LMS_10G_LINK_NO_AN:
243 		*speed = IXGBE_LINK_SPEED_10GB_FULL;
244 		*autoneg = false;
245 		break;
246 
247 	case IXGBE_AUTOC_LMS_1G_AN:
248 		*speed = IXGBE_LINK_SPEED_1GB_FULL;
249 		*autoneg = true;
250 		break;
251 
252 	case IXGBE_AUTOC_LMS_KX4_AN:
253 	case IXGBE_AUTOC_LMS_KX4_AN_1G_AN:
254 		*speed = IXGBE_LINK_SPEED_UNKNOWN;
255 		if (autoc & IXGBE_AUTOC_KX4_SUPP)
256 			*speed |= IXGBE_LINK_SPEED_10GB_FULL;
257 		if (autoc & IXGBE_AUTOC_KX_SUPP)
258 			*speed |= IXGBE_LINK_SPEED_1GB_FULL;
259 		*autoneg = true;
260 		break;
261 
262 	default:
263 		return IXGBE_ERR_LINK_SETUP;
264 	}
265 
266 	return 0;
267 }
268 
269 /**
270  *  ixgbe_get_media_type_82598 - Determines media type
271  *  @hw: pointer to hardware structure
272  *
273  *  Returns the media type (fiber, copper, backplane)
274  **/
275 static enum ixgbe_media_type ixgbe_get_media_type_82598(struct ixgbe_hw *hw)
276 {
277 	/* Detect if there is a copper PHY attached. */
278 	switch (hw->phy.type) {
279 	case ixgbe_phy_cu_unknown:
280 	case ixgbe_phy_tn:
281 		return ixgbe_media_type_copper;
282 
283 	default:
284 		break;
285 	}
286 
287 	/* Media type for I82598 is based on device ID */
288 	switch (hw->device_id) {
289 	case IXGBE_DEV_ID_82598:
290 	case IXGBE_DEV_ID_82598_BX:
291 		/* Default device ID is mezzanine card KX/KX4 */
292 		return ixgbe_media_type_backplane;
293 
294 	case IXGBE_DEV_ID_82598AF_DUAL_PORT:
295 	case IXGBE_DEV_ID_82598AF_SINGLE_PORT:
296 	case IXGBE_DEV_ID_82598_DA_DUAL_PORT:
297 	case IXGBE_DEV_ID_82598_SR_DUAL_PORT_EM:
298 	case IXGBE_DEV_ID_82598EB_XF_LR:
299 	case IXGBE_DEV_ID_82598EB_SFP_LOM:
300 		return ixgbe_media_type_fiber;
301 
302 	case IXGBE_DEV_ID_82598EB_CX4:
303 	case IXGBE_DEV_ID_82598_CX4_DUAL_PORT:
304 		return ixgbe_media_type_cx4;
305 
306 	case IXGBE_DEV_ID_82598AT:
307 	case IXGBE_DEV_ID_82598AT2:
308 		return ixgbe_media_type_copper;
309 
310 	default:
311 		return ixgbe_media_type_unknown;
312 	}
313 }
314 
315 /**
316  *  ixgbe_fc_enable_82598 - Enable flow control
317  *  @hw: pointer to hardware structure
318  *
319  *  Enable flow control according to the current settings.
320  **/
321 static s32 ixgbe_fc_enable_82598(struct ixgbe_hw *hw)
322 {
323 	u32 fctrl_reg;
324 	u32 rmcs_reg;
325 	u32 reg;
326 	u32 fcrtl, fcrth;
327 	u32 link_speed = 0;
328 	int i;
329 	bool link_up;
330 
331 	/* Validate the water mark configuration */
332 	if (!hw->fc.pause_time)
333 		return IXGBE_ERR_INVALID_LINK_SETTINGS;
334 
335 	/* Low water mark of zero causes XOFF floods */
336 	for (i = 0; i < MAX_TRAFFIC_CLASS; i++) {
337 		if ((hw->fc.current_mode & ixgbe_fc_tx_pause) &&
338 		    hw->fc.high_water[i]) {
339 			if (!hw->fc.low_water[i] ||
340 			    hw->fc.low_water[i] >= hw->fc.high_water[i]) {
341 				hw_dbg(hw, "Invalid water mark configuration\n");
342 				return IXGBE_ERR_INVALID_LINK_SETTINGS;
343 			}
344 		}
345 	}
346 
347 	/*
348 	 * On 82598 having Rx FC on causes resets while doing 1G
349 	 * so if it's on turn it off once we know link_speed. For
350 	 * more details see 82598 Specification update.
351 	 */
352 	hw->mac.ops.check_link(hw, &link_speed, &link_up, false);
353 	if (link_up && link_speed == IXGBE_LINK_SPEED_1GB_FULL) {
354 		switch (hw->fc.requested_mode) {
355 		case ixgbe_fc_full:
356 			hw->fc.requested_mode = ixgbe_fc_tx_pause;
357 			break;
358 		case ixgbe_fc_rx_pause:
359 			hw->fc.requested_mode = ixgbe_fc_none;
360 			break;
361 		default:
362 			/* no change */
363 			break;
364 		}
365 	}
366 
367 	/* Negotiate the fc mode to use */
368 	hw->mac.ops.fc_autoneg(hw);
369 
370 	/* Disable any previous flow control settings */
371 	fctrl_reg = IXGBE_READ_REG(hw, IXGBE_FCTRL);
372 	fctrl_reg &= ~(IXGBE_FCTRL_RFCE | IXGBE_FCTRL_RPFCE);
373 
374 	rmcs_reg = IXGBE_READ_REG(hw, IXGBE_RMCS);
375 	rmcs_reg &= ~(IXGBE_RMCS_TFCE_PRIORITY | IXGBE_RMCS_TFCE_802_3X);
376 
377 	/*
378 	 * The possible values of fc.current_mode are:
379 	 * 0: Flow control is completely disabled
380 	 * 1: Rx flow control is enabled (we can receive pause frames,
381 	 *    but not send pause frames).
382 	 * 2: Tx flow control is enabled (we can send pause frames but
383 	 *     we do not support receiving pause frames).
384 	 * 3: Both Rx and Tx flow control (symmetric) are enabled.
385 	 * other: Invalid.
386 	 */
387 	switch (hw->fc.current_mode) {
388 	case ixgbe_fc_none:
389 		/*
390 		 * Flow control is disabled by software override or autoneg.
391 		 * The code below will actually disable it in the HW.
392 		 */
393 		break;
394 	case ixgbe_fc_rx_pause:
395 		/*
396 		 * Rx Flow control is enabled and Tx Flow control is
397 		 * disabled by software override. Since there really
398 		 * isn't a way to advertise that we are capable of RX
399 		 * Pause ONLY, we will advertise that we support both
400 		 * symmetric and asymmetric Rx PAUSE.  Later, we will
401 		 * disable the adapter's ability to send PAUSE frames.
402 		 */
403 		fctrl_reg |= IXGBE_FCTRL_RFCE;
404 		break;
405 	case ixgbe_fc_tx_pause:
406 		/*
407 		 * Tx Flow control is enabled, and Rx Flow control is
408 		 * disabled by software override.
409 		 */
410 		rmcs_reg |= IXGBE_RMCS_TFCE_802_3X;
411 		break;
412 	case ixgbe_fc_full:
413 		/* Flow control (both Rx and Tx) is enabled by SW override. */
414 		fctrl_reg |= IXGBE_FCTRL_RFCE;
415 		rmcs_reg |= IXGBE_RMCS_TFCE_802_3X;
416 		break;
417 	default:
418 		hw_dbg(hw, "Flow control param set incorrectly\n");
419 		return IXGBE_ERR_CONFIG;
420 	}
421 
422 	/* Set 802.3x based flow control settings. */
423 	fctrl_reg |= IXGBE_FCTRL_DPF;
424 	IXGBE_WRITE_REG(hw, IXGBE_FCTRL, fctrl_reg);
425 	IXGBE_WRITE_REG(hw, IXGBE_RMCS, rmcs_reg);
426 
427 	/* Set up and enable Rx high/low water mark thresholds, enable XON. */
428 	for (i = 0; i < MAX_TRAFFIC_CLASS; i++) {
429 		if ((hw->fc.current_mode & ixgbe_fc_tx_pause) &&
430 		    hw->fc.high_water[i]) {
431 			fcrtl = (hw->fc.low_water[i] << 10) | IXGBE_FCRTL_XONE;
432 			fcrth = (hw->fc.high_water[i] << 10) | IXGBE_FCRTH_FCEN;
433 			IXGBE_WRITE_REG(hw, IXGBE_FCRTL(i), fcrtl);
434 			IXGBE_WRITE_REG(hw, IXGBE_FCRTH(i), fcrth);
435 		} else {
436 			IXGBE_WRITE_REG(hw, IXGBE_FCRTL(i), 0);
437 			IXGBE_WRITE_REG(hw, IXGBE_FCRTH(i), 0);
438 		}
439 
440 	}
441 
442 	/* Configure pause time (2 TCs per register) */
443 	reg = hw->fc.pause_time * 0x00010001;
444 	for (i = 0; i < (MAX_TRAFFIC_CLASS / 2); i++)
445 		IXGBE_WRITE_REG(hw, IXGBE_FCTTV(i), reg);
446 
447 	/* Configure flow control refresh threshold value */
448 	IXGBE_WRITE_REG(hw, IXGBE_FCRTV, hw->fc.pause_time / 2);
449 
450 	return 0;
451 }
452 
453 /**
454  *  ixgbe_start_mac_link_82598 - Configures MAC link settings
455  *  @hw: pointer to hardware structure
456  *
457  *  Configures link settings based on values in the ixgbe_hw struct.
458  *  Restarts the link.  Performs autonegotiation if needed.
459  **/
460 static s32 ixgbe_start_mac_link_82598(struct ixgbe_hw *hw,
461 				      bool autoneg_wait_to_complete)
462 {
463 	u32 autoc_reg;
464 	u32 links_reg;
465 	u32 i;
466 	s32 status = 0;
467 
468 	/* Restart link */
469 	autoc_reg = IXGBE_READ_REG(hw, IXGBE_AUTOC);
470 	autoc_reg |= IXGBE_AUTOC_AN_RESTART;
471 	IXGBE_WRITE_REG(hw, IXGBE_AUTOC, autoc_reg);
472 
473 	/* Only poll for autoneg to complete if specified to do so */
474 	if (autoneg_wait_to_complete) {
475 		if ((autoc_reg & IXGBE_AUTOC_LMS_MASK) ==
476 		     IXGBE_AUTOC_LMS_KX4_AN ||
477 		    (autoc_reg & IXGBE_AUTOC_LMS_MASK) ==
478 		     IXGBE_AUTOC_LMS_KX4_AN_1G_AN) {
479 			links_reg = 0; /* Just in case Autoneg time = 0 */
480 			for (i = 0; i < IXGBE_AUTO_NEG_TIME; i++) {
481 				links_reg = IXGBE_READ_REG(hw, IXGBE_LINKS);
482 				if (links_reg & IXGBE_LINKS_KX_AN_COMP)
483 					break;
484 				msleep(100);
485 			}
486 			if (!(links_reg & IXGBE_LINKS_KX_AN_COMP)) {
487 				status = IXGBE_ERR_AUTONEG_NOT_COMPLETE;
488 				hw_dbg(hw, "Autonegotiation did not complete.\n");
489 			}
490 		}
491 	}
492 
493 	/* Add delay to filter out noises during initial link setup */
494 	msleep(50);
495 
496 	return status;
497 }
498 
499 /**
500  *  ixgbe_validate_link_ready - Function looks for phy link
501  *  @hw: pointer to hardware structure
502  *
503  *  Function indicates success when phy link is available. If phy is not ready
504  *  within 5 seconds of MAC indicating link, the function returns error.
505  **/
506 static s32 ixgbe_validate_link_ready(struct ixgbe_hw *hw)
507 {
508 	u32 timeout;
509 	u16 an_reg;
510 
511 	if (hw->device_id != IXGBE_DEV_ID_82598AT2)
512 		return 0;
513 
514 	for (timeout = 0;
515 	     timeout < IXGBE_VALIDATE_LINK_READY_TIMEOUT; timeout++) {
516 		hw->phy.ops.read_reg(hw, MDIO_STAT1, MDIO_MMD_AN, &an_reg);
517 
518 		if ((an_reg & MDIO_AN_STAT1_COMPLETE) &&
519 		    (an_reg & MDIO_STAT1_LSTATUS))
520 			break;
521 
522 		msleep(100);
523 	}
524 
525 	if (timeout == IXGBE_VALIDATE_LINK_READY_TIMEOUT) {
526 		hw_dbg(hw, "Link was indicated but link is down\n");
527 		return IXGBE_ERR_LINK_SETUP;
528 	}
529 
530 	return 0;
531 }
532 
533 /**
534  *  ixgbe_check_mac_link_82598 - Get link/speed status
535  *  @hw: pointer to hardware structure
536  *  @speed: pointer to link speed
537  *  @link_up: true is link is up, false otherwise
538  *  @link_up_wait_to_complete: bool used to wait for link up or not
539  *
540  *  Reads the links register to determine if link is up and the current speed
541  **/
542 static s32 ixgbe_check_mac_link_82598(struct ixgbe_hw *hw,
543 				      ixgbe_link_speed *speed, bool *link_up,
544 				      bool link_up_wait_to_complete)
545 {
546 	u32 links_reg;
547 	u32 i;
548 	u16 link_reg, adapt_comp_reg;
549 
550 	/*
551 	 * SERDES PHY requires us to read link status from register 0xC79F.
552 	 * Bit 0 set indicates link is up/ready; clear indicates link down.
553 	 * 0xC00C is read to check that the XAUI lanes are active.  Bit 0
554 	 * clear indicates active; set indicates inactive.
555 	 */
556 	if (hw->phy.type == ixgbe_phy_nl) {
557 		hw->phy.ops.read_reg(hw, 0xC79F, MDIO_MMD_PMAPMD, &link_reg);
558 		hw->phy.ops.read_reg(hw, 0xC79F, MDIO_MMD_PMAPMD, &link_reg);
559 		hw->phy.ops.read_reg(hw, 0xC00C, MDIO_MMD_PMAPMD,
560 				     &adapt_comp_reg);
561 		if (link_up_wait_to_complete) {
562 			for (i = 0; i < IXGBE_LINK_UP_TIME; i++) {
563 				if ((link_reg & 1) &&
564 				    ((adapt_comp_reg & 1) == 0)) {
565 					*link_up = true;
566 					break;
567 				} else {
568 					*link_up = false;
569 				}
570 				msleep(100);
571 				hw->phy.ops.read_reg(hw, 0xC79F,
572 						     MDIO_MMD_PMAPMD,
573 						     &link_reg);
574 				hw->phy.ops.read_reg(hw, 0xC00C,
575 						     MDIO_MMD_PMAPMD,
576 						     &adapt_comp_reg);
577 			}
578 		} else {
579 			if ((link_reg & 1) && ((adapt_comp_reg & 1) == 0))
580 				*link_up = true;
581 			else
582 				*link_up = false;
583 		}
584 
585 		if (!*link_up)
586 			return 0;
587 	}
588 
589 	links_reg = IXGBE_READ_REG(hw, IXGBE_LINKS);
590 	if (link_up_wait_to_complete) {
591 		for (i = 0; i < IXGBE_LINK_UP_TIME; i++) {
592 			if (links_reg & IXGBE_LINKS_UP) {
593 				*link_up = true;
594 				break;
595 			} else {
596 				*link_up = false;
597 			}
598 			msleep(100);
599 			links_reg = IXGBE_READ_REG(hw, IXGBE_LINKS);
600 		}
601 	} else {
602 		if (links_reg & IXGBE_LINKS_UP)
603 			*link_up = true;
604 		else
605 			*link_up = false;
606 	}
607 
608 	if (links_reg & IXGBE_LINKS_SPEED)
609 		*speed = IXGBE_LINK_SPEED_10GB_FULL;
610 	else
611 		*speed = IXGBE_LINK_SPEED_1GB_FULL;
612 
613 	if ((hw->device_id == IXGBE_DEV_ID_82598AT2) && *link_up &&
614 	    (ixgbe_validate_link_ready(hw) != 0))
615 		*link_up = false;
616 
617 	return 0;
618 }
619 
620 /**
621  *  ixgbe_setup_mac_link_82598 - Set MAC link speed
622  *  @hw: pointer to hardware structure
623  *  @speed: new link speed
624  *  @autoneg_wait_to_complete: true when waiting for completion is needed
625  *
626  *  Set the link speed in the AUTOC register and restarts link.
627  **/
628 static s32 ixgbe_setup_mac_link_82598(struct ixgbe_hw *hw,
629 				      ixgbe_link_speed speed,
630 				      bool autoneg_wait_to_complete)
631 {
632 	bool		 autoneg	   = false;
633 	ixgbe_link_speed link_capabilities = IXGBE_LINK_SPEED_UNKNOWN;
634 	u32              curr_autoc        = IXGBE_READ_REG(hw, IXGBE_AUTOC);
635 	u32              autoc             = curr_autoc;
636 	u32              link_mode         = autoc & IXGBE_AUTOC_LMS_MASK;
637 
638 	/* Check to see if speed passed in is supported. */
639 	ixgbe_get_link_capabilities_82598(hw, &link_capabilities, &autoneg);
640 	speed &= link_capabilities;
641 
642 	if (speed == IXGBE_LINK_SPEED_UNKNOWN)
643 		return IXGBE_ERR_LINK_SETUP;
644 
645 	/* Set KX4/KX support according to speed requested */
646 	else if (link_mode == IXGBE_AUTOC_LMS_KX4_AN ||
647 		 link_mode == IXGBE_AUTOC_LMS_KX4_AN_1G_AN) {
648 		autoc &= ~IXGBE_AUTOC_KX4_KX_SUPP_MASK;
649 		if (speed & IXGBE_LINK_SPEED_10GB_FULL)
650 			autoc |= IXGBE_AUTOC_KX4_SUPP;
651 		if (speed & IXGBE_LINK_SPEED_1GB_FULL)
652 			autoc |= IXGBE_AUTOC_KX_SUPP;
653 		if (autoc != curr_autoc)
654 			IXGBE_WRITE_REG(hw, IXGBE_AUTOC, autoc);
655 	}
656 
657 	/* Setup and restart the link based on the new values in
658 	 * ixgbe_hw This will write the AUTOC register based on the new
659 	 * stored values
660 	 */
661 	return ixgbe_start_mac_link_82598(hw, autoneg_wait_to_complete);
662 }
663 
664 
665 /**
666  *  ixgbe_setup_copper_link_82598 - Set the PHY autoneg advertised field
667  *  @hw: pointer to hardware structure
668  *  @speed: new link speed
669  *  @autoneg_wait_to_complete: true if waiting is needed to complete
670  *
671  *  Sets the link speed in the AUTOC register in the MAC and restarts link.
672  **/
673 static s32 ixgbe_setup_copper_link_82598(struct ixgbe_hw *hw,
674 					       ixgbe_link_speed speed,
675 					       bool autoneg_wait_to_complete)
676 {
677 	s32 status;
678 
679 	/* Setup the PHY according to input speed */
680 	status = hw->phy.ops.setup_link_speed(hw, speed,
681 					      autoneg_wait_to_complete);
682 	/* Set up MAC */
683 	ixgbe_start_mac_link_82598(hw, autoneg_wait_to_complete);
684 
685 	return status;
686 }
687 
688 /**
689  *  ixgbe_reset_hw_82598 - Performs hardware reset
690  *  @hw: pointer to hardware structure
691  *
692  *  Resets the hardware by resetting the transmit and receive units, masks and
693  *  clears all interrupts, performing a PHY reset, and performing a link (MAC)
694  *  reset.
695  **/
696 static s32 ixgbe_reset_hw_82598(struct ixgbe_hw *hw)
697 {
698 	s32 status;
699 	s32 phy_status = 0;
700 	u32 ctrl;
701 	u32 gheccr;
702 	u32 i;
703 	u32 autoc;
704 	u8  analog_val;
705 
706 	/* Call adapter stop to disable tx/rx and clear interrupts */
707 	status = hw->mac.ops.stop_adapter(hw);
708 	if (status)
709 		return status;
710 
711 	/*
712 	 * Power up the Atlas Tx lanes if they are currently powered down.
713 	 * Atlas Tx lanes are powered down for MAC loopback tests, but
714 	 * they are not automatically restored on reset.
715 	 */
716 	hw->mac.ops.read_analog_reg8(hw, IXGBE_ATLAS_PDN_LPBK, &analog_val);
717 	if (analog_val & IXGBE_ATLAS_PDN_TX_REG_EN) {
718 		/* Enable Tx Atlas so packets can be transmitted again */
719 		hw->mac.ops.read_analog_reg8(hw, IXGBE_ATLAS_PDN_LPBK,
720 					     &analog_val);
721 		analog_val &= ~IXGBE_ATLAS_PDN_TX_REG_EN;
722 		hw->mac.ops.write_analog_reg8(hw, IXGBE_ATLAS_PDN_LPBK,
723 					      analog_val);
724 
725 		hw->mac.ops.read_analog_reg8(hw, IXGBE_ATLAS_PDN_10G,
726 					     &analog_val);
727 		analog_val &= ~IXGBE_ATLAS_PDN_TX_10G_QL_ALL;
728 		hw->mac.ops.write_analog_reg8(hw, IXGBE_ATLAS_PDN_10G,
729 					      analog_val);
730 
731 		hw->mac.ops.read_analog_reg8(hw, IXGBE_ATLAS_PDN_1G,
732 					     &analog_val);
733 		analog_val &= ~IXGBE_ATLAS_PDN_TX_1G_QL_ALL;
734 		hw->mac.ops.write_analog_reg8(hw, IXGBE_ATLAS_PDN_1G,
735 					      analog_val);
736 
737 		hw->mac.ops.read_analog_reg8(hw, IXGBE_ATLAS_PDN_AN,
738 					     &analog_val);
739 		analog_val &= ~IXGBE_ATLAS_PDN_TX_AN_QL_ALL;
740 		hw->mac.ops.write_analog_reg8(hw, IXGBE_ATLAS_PDN_AN,
741 					      analog_val);
742 	}
743 
744 	/* Reset PHY */
745 	if (hw->phy.reset_disable == false) {
746 		/* PHY ops must be identified and initialized prior to reset */
747 
748 		/* Init PHY and function pointers, perform SFP setup */
749 		phy_status = hw->phy.ops.init(hw);
750 		if (phy_status == IXGBE_ERR_SFP_NOT_SUPPORTED)
751 			return phy_status;
752 		if (phy_status == IXGBE_ERR_SFP_NOT_PRESENT)
753 			goto mac_reset_top;
754 
755 		hw->phy.ops.reset(hw);
756 	}
757 
758 mac_reset_top:
759 	/*
760 	 * Issue global reset to the MAC.  This needs to be a SW reset.
761 	 * If link reset is used, it might reset the MAC when mng is using it
762 	 */
763 	ctrl = IXGBE_READ_REG(hw, IXGBE_CTRL) | IXGBE_CTRL_RST;
764 	IXGBE_WRITE_REG(hw, IXGBE_CTRL, ctrl);
765 	IXGBE_WRITE_FLUSH(hw);
766 	usleep_range(1000, 1200);
767 
768 	/* Poll for reset bit to self-clear indicating reset is complete */
769 	for (i = 0; i < 10; i++) {
770 		ctrl = IXGBE_READ_REG(hw, IXGBE_CTRL);
771 		if (!(ctrl & IXGBE_CTRL_RST))
772 			break;
773 		udelay(1);
774 	}
775 	if (ctrl & IXGBE_CTRL_RST) {
776 		status = IXGBE_ERR_RESET_FAILED;
777 		hw_dbg(hw, "Reset polling failed to complete.\n");
778 	}
779 
780 	msleep(50);
781 
782 	/*
783 	 * Double resets are required for recovery from certain error
784 	 * conditions.  Between resets, it is necessary to stall to allow time
785 	 * for any pending HW events to complete.
786 	 */
787 	if (hw->mac.flags & IXGBE_FLAGS_DOUBLE_RESET_REQUIRED) {
788 		hw->mac.flags &= ~IXGBE_FLAGS_DOUBLE_RESET_REQUIRED;
789 		goto mac_reset_top;
790 	}
791 
792 	gheccr = IXGBE_READ_REG(hw, IXGBE_GHECCR);
793 	gheccr &= ~(BIT(21) | BIT(18) | BIT(9) | BIT(6));
794 	IXGBE_WRITE_REG(hw, IXGBE_GHECCR, gheccr);
795 
796 	/*
797 	 * Store the original AUTOC value if it has not been
798 	 * stored off yet.  Otherwise restore the stored original
799 	 * AUTOC value since the reset operation sets back to deaults.
800 	 */
801 	autoc = IXGBE_READ_REG(hw, IXGBE_AUTOC);
802 	if (hw->mac.orig_link_settings_stored == false) {
803 		hw->mac.orig_autoc = autoc;
804 		hw->mac.orig_link_settings_stored = true;
805 	} else if (autoc != hw->mac.orig_autoc) {
806 		IXGBE_WRITE_REG(hw, IXGBE_AUTOC, hw->mac.orig_autoc);
807 	}
808 
809 	/* Store the permanent mac address */
810 	hw->mac.ops.get_mac_addr(hw, hw->mac.perm_addr);
811 
812 	/*
813 	 * Store MAC address from RAR0, clear receive address registers, and
814 	 * clear the multicast table
815 	 */
816 	hw->mac.ops.init_rx_addrs(hw);
817 
818 	if (phy_status)
819 		status = phy_status;
820 
821 	return status;
822 }
823 
824 /**
825  *  ixgbe_set_vmdq_82598 - Associate a VMDq set index with a rx address
826  *  @hw: pointer to hardware struct
827  *  @rar: receive address register index to associate with a VMDq index
828  *  @vmdq: VMDq set index
829  **/
830 static s32 ixgbe_set_vmdq_82598(struct ixgbe_hw *hw, u32 rar, u32 vmdq)
831 {
832 	u32 rar_high;
833 	u32 rar_entries = hw->mac.num_rar_entries;
834 
835 	/* Make sure we are using a valid rar index range */
836 	if (rar >= rar_entries) {
837 		hw_dbg(hw, "RAR index %d is out of range.\n", rar);
838 		return IXGBE_ERR_INVALID_ARGUMENT;
839 	}
840 
841 	rar_high = IXGBE_READ_REG(hw, IXGBE_RAH(rar));
842 	rar_high &= ~IXGBE_RAH_VIND_MASK;
843 	rar_high |= ((vmdq << IXGBE_RAH_VIND_SHIFT) & IXGBE_RAH_VIND_MASK);
844 	IXGBE_WRITE_REG(hw, IXGBE_RAH(rar), rar_high);
845 	return 0;
846 }
847 
848 /**
849  *  ixgbe_clear_vmdq_82598 - Disassociate a VMDq set index from an rx address
850  *  @hw: pointer to hardware struct
851  *  @rar: receive address register index to associate with a VMDq index
852  *  @vmdq: VMDq clear index (not used in 82598, but elsewhere)
853  **/
854 static s32 ixgbe_clear_vmdq_82598(struct ixgbe_hw *hw, u32 rar, u32 vmdq)
855 {
856 	u32 rar_high;
857 	u32 rar_entries = hw->mac.num_rar_entries;
858 
859 
860 	/* Make sure we are using a valid rar index range */
861 	if (rar >= rar_entries) {
862 		hw_dbg(hw, "RAR index %d is out of range.\n", rar);
863 		return IXGBE_ERR_INVALID_ARGUMENT;
864 	}
865 
866 	rar_high = IXGBE_READ_REG(hw, IXGBE_RAH(rar));
867 	if (rar_high & IXGBE_RAH_VIND_MASK) {
868 		rar_high &= ~IXGBE_RAH_VIND_MASK;
869 		IXGBE_WRITE_REG(hw, IXGBE_RAH(rar), rar_high);
870 	}
871 
872 	return 0;
873 }
874 
875 /**
876  *  ixgbe_set_vfta_82598 - Set VLAN filter table
877  *  @hw: pointer to hardware structure
878  *  @vlan: VLAN id to write to VLAN filter
879  *  @vind: VMDq output index that maps queue to VLAN id in VFTA
880  *  @vlan_on: boolean flag to turn on/off VLAN in VFTA
881  *  @vlvf_bypass: boolean flag - unused
882  *
883  *  Turn on/off specified VLAN in the VLAN filter table.
884  **/
885 static s32 ixgbe_set_vfta_82598(struct ixgbe_hw *hw, u32 vlan, u32 vind,
886 				bool vlan_on, bool vlvf_bypass)
887 {
888 	u32 regindex;
889 	u32 bitindex;
890 	u32 bits;
891 	u32 vftabyte;
892 
893 	if (vlan > 4095)
894 		return IXGBE_ERR_PARAM;
895 
896 	/* Determine 32-bit word position in array */
897 	regindex = (vlan >> 5) & 0x7F;   /* upper seven bits */
898 
899 	/* Determine the location of the (VMD) queue index */
900 	vftabyte =  ((vlan >> 3) & 0x03); /* bits (4:3) indicating byte array */
901 	bitindex = (vlan & 0x7) << 2;    /* lower 3 bits indicate nibble */
902 
903 	/* Set the nibble for VMD queue index */
904 	bits = IXGBE_READ_REG(hw, IXGBE_VFTAVIND(vftabyte, regindex));
905 	bits &= (~(0x0F << bitindex));
906 	bits |= (vind << bitindex);
907 	IXGBE_WRITE_REG(hw, IXGBE_VFTAVIND(vftabyte, regindex), bits);
908 
909 	/* Determine the location of the bit for this VLAN id */
910 	bitindex = vlan & 0x1F;   /* lower five bits */
911 
912 	bits = IXGBE_READ_REG(hw, IXGBE_VFTA(regindex));
913 	if (vlan_on)
914 		/* Turn on this VLAN id */
915 		bits |= BIT(bitindex);
916 	else
917 		/* Turn off this VLAN id */
918 		bits &= ~BIT(bitindex);
919 	IXGBE_WRITE_REG(hw, IXGBE_VFTA(regindex), bits);
920 
921 	return 0;
922 }
923 
924 /**
925  *  ixgbe_clear_vfta_82598 - Clear VLAN filter table
926  *  @hw: pointer to hardware structure
927  *
928  *  Clears the VLAN filer table, and the VMDq index associated with the filter
929  **/
930 static s32 ixgbe_clear_vfta_82598(struct ixgbe_hw *hw)
931 {
932 	u32 offset;
933 	u32 vlanbyte;
934 
935 	for (offset = 0; offset < hw->mac.vft_size; offset++)
936 		IXGBE_WRITE_REG(hw, IXGBE_VFTA(offset), 0);
937 
938 	for (vlanbyte = 0; vlanbyte < 4; vlanbyte++)
939 		for (offset = 0; offset < hw->mac.vft_size; offset++)
940 			IXGBE_WRITE_REG(hw, IXGBE_VFTAVIND(vlanbyte, offset),
941 					0);
942 
943 	return 0;
944 }
945 
946 /**
947  *  ixgbe_read_analog_reg8_82598 - Reads 8 bit Atlas analog register
948  *  @hw: pointer to hardware structure
949  *  @reg: analog register to read
950  *  @val: read value
951  *
952  *  Performs read operation to Atlas analog register specified.
953  **/
954 static s32 ixgbe_read_analog_reg8_82598(struct ixgbe_hw *hw, u32 reg, u8 *val)
955 {
956 	u32  atlas_ctl;
957 
958 	IXGBE_WRITE_REG(hw, IXGBE_ATLASCTL,
959 			IXGBE_ATLASCTL_WRITE_CMD | (reg << 8));
960 	IXGBE_WRITE_FLUSH(hw);
961 	udelay(10);
962 	atlas_ctl = IXGBE_READ_REG(hw, IXGBE_ATLASCTL);
963 	*val = (u8)atlas_ctl;
964 
965 	return 0;
966 }
967 
968 /**
969  *  ixgbe_write_analog_reg8_82598 - Writes 8 bit Atlas analog register
970  *  @hw: pointer to hardware structure
971  *  @reg: atlas register to write
972  *  @val: value to write
973  *
974  *  Performs write operation to Atlas analog register specified.
975  **/
976 static s32 ixgbe_write_analog_reg8_82598(struct ixgbe_hw *hw, u32 reg, u8 val)
977 {
978 	u32  atlas_ctl;
979 
980 	atlas_ctl = (reg << 8) | val;
981 	IXGBE_WRITE_REG(hw, IXGBE_ATLASCTL, atlas_ctl);
982 	IXGBE_WRITE_FLUSH(hw);
983 	udelay(10);
984 
985 	return 0;
986 }
987 
988 /**
989  *  ixgbe_read_i2c_phy_82598 - Reads 8 bit word over I2C interface.
990  *  @hw: pointer to hardware structure
991  *  @dev_addr: address to read from
992  *  @byte_offset: byte offset to read from dev_addr
993  *  @eeprom_data: value read
994  *
995  *  Performs 8 byte read operation to SFP module's data over I2C interface.
996  **/
997 static s32 ixgbe_read_i2c_phy_82598(struct ixgbe_hw *hw, u8 dev_addr,
998 				    u8 byte_offset, u8 *eeprom_data)
999 {
1000 	s32 status = 0;
1001 	u16 sfp_addr = 0;
1002 	u16 sfp_data = 0;
1003 	u16 sfp_stat = 0;
1004 	u16 gssr;
1005 	u32 i;
1006 
1007 	if (IXGBE_READ_REG(hw, IXGBE_STATUS) & IXGBE_STATUS_LAN_ID_1)
1008 		gssr = IXGBE_GSSR_PHY1_SM;
1009 	else
1010 		gssr = IXGBE_GSSR_PHY0_SM;
1011 
1012 	if (hw->mac.ops.acquire_swfw_sync(hw, gssr) != 0)
1013 		return IXGBE_ERR_SWFW_SYNC;
1014 
1015 	if (hw->phy.type == ixgbe_phy_nl) {
1016 		/*
1017 		 * phy SDA/SCL registers are at addresses 0xC30A to
1018 		 * 0xC30D.  These registers are used to talk to the SFP+
1019 		 * module's EEPROM through the SDA/SCL (I2C) interface.
1020 		 */
1021 		sfp_addr = (dev_addr << 8) + byte_offset;
1022 		sfp_addr = (sfp_addr | IXGBE_I2C_EEPROM_READ_MASK);
1023 		hw->phy.ops.write_reg_mdi(hw,
1024 					  IXGBE_MDIO_PMA_PMD_SDA_SCL_ADDR,
1025 					  MDIO_MMD_PMAPMD,
1026 					  sfp_addr);
1027 
1028 		/* Poll status */
1029 		for (i = 0; i < 100; i++) {
1030 			hw->phy.ops.read_reg_mdi(hw,
1031 						IXGBE_MDIO_PMA_PMD_SDA_SCL_STAT,
1032 						MDIO_MMD_PMAPMD,
1033 						&sfp_stat);
1034 			sfp_stat = sfp_stat & IXGBE_I2C_EEPROM_STATUS_MASK;
1035 			if (sfp_stat != IXGBE_I2C_EEPROM_STATUS_IN_PROGRESS)
1036 				break;
1037 			usleep_range(10000, 20000);
1038 		}
1039 
1040 		if (sfp_stat != IXGBE_I2C_EEPROM_STATUS_PASS) {
1041 			hw_dbg(hw, "EEPROM read did not pass.\n");
1042 			status = IXGBE_ERR_SFP_NOT_PRESENT;
1043 			goto out;
1044 		}
1045 
1046 		/* Read data */
1047 		hw->phy.ops.read_reg_mdi(hw, IXGBE_MDIO_PMA_PMD_SDA_SCL_DATA,
1048 					MDIO_MMD_PMAPMD, &sfp_data);
1049 
1050 		*eeprom_data = (u8)(sfp_data >> 8);
1051 	} else {
1052 		status = IXGBE_ERR_PHY;
1053 	}
1054 
1055 out:
1056 	hw->mac.ops.release_swfw_sync(hw, gssr);
1057 	return status;
1058 }
1059 
1060 /**
1061  *  ixgbe_read_i2c_eeprom_82598 - Reads 8 bit word over I2C interface.
1062  *  @hw: pointer to hardware structure
1063  *  @byte_offset: EEPROM byte offset to read
1064  *  @eeprom_data: value read
1065  *
1066  *  Performs 8 byte read operation to SFP module's EEPROM over I2C interface.
1067  **/
1068 static s32 ixgbe_read_i2c_eeprom_82598(struct ixgbe_hw *hw, u8 byte_offset,
1069 				       u8 *eeprom_data)
1070 {
1071 	return ixgbe_read_i2c_phy_82598(hw, IXGBE_I2C_EEPROM_DEV_ADDR,
1072 					byte_offset, eeprom_data);
1073 }
1074 
1075 /**
1076  *  ixgbe_read_i2c_sff8472_82598 - Reads 8 bit word over I2C interface.
1077  *  @hw: pointer to hardware structure
1078  *  @byte_offset: byte offset at address 0xA2
1079  *  @eeprom_data: value read
1080  *
1081  *  Performs 8 byte read operation to SFP module's SFF-8472 data over I2C
1082  **/
1083 static s32 ixgbe_read_i2c_sff8472_82598(struct ixgbe_hw *hw, u8 byte_offset,
1084 				       u8 *sff8472_data)
1085 {
1086 	return ixgbe_read_i2c_phy_82598(hw, IXGBE_I2C_EEPROM_DEV_ADDR2,
1087 					byte_offset, sff8472_data);
1088 }
1089 
1090 /**
1091  *  ixgbe_set_lan_id_multi_port_pcie_82598 - Set LAN id for PCIe multiple
1092  *  port devices.
1093  *  @hw: pointer to the HW structure
1094  *
1095  *  Calls common function and corrects issue with some single port devices
1096  *  that enable LAN1 but not LAN0.
1097  **/
1098 static void ixgbe_set_lan_id_multi_port_pcie_82598(struct ixgbe_hw *hw)
1099 {
1100 	struct ixgbe_bus_info *bus = &hw->bus;
1101 	u16 pci_gen = 0;
1102 	u16 pci_ctrl2 = 0;
1103 
1104 	ixgbe_set_lan_id_multi_port_pcie(hw);
1105 
1106 	/* check if LAN0 is disabled */
1107 	hw->eeprom.ops.read(hw, IXGBE_PCIE_GENERAL_PTR, &pci_gen);
1108 	if ((pci_gen != 0) && (pci_gen != 0xFFFF)) {
1109 
1110 		hw->eeprom.ops.read(hw, pci_gen + IXGBE_PCIE_CTRL2, &pci_ctrl2);
1111 
1112 		/* if LAN0 is completely disabled force function to 0 */
1113 		if ((pci_ctrl2 & IXGBE_PCIE_CTRL2_LAN_DISABLE) &&
1114 		    !(pci_ctrl2 & IXGBE_PCIE_CTRL2_DISABLE_SELECT) &&
1115 		    !(pci_ctrl2 & IXGBE_PCIE_CTRL2_DUMMY_ENABLE)) {
1116 
1117 			bus->func = 0;
1118 		}
1119 	}
1120 }
1121 
1122 /**
1123  * ixgbe_set_rxpba_82598 - Initialize RX packet buffer
1124  * @hw: pointer to hardware structure
1125  * @num_pb: number of packet buffers to allocate
1126  * @headroom: reserve n KB of headroom
1127  * @strategy: packet buffer allocation strategy
1128  **/
1129 static void ixgbe_set_rxpba_82598(struct ixgbe_hw *hw, int num_pb,
1130 				  u32 headroom, int strategy)
1131 {
1132 	u32 rxpktsize = IXGBE_RXPBSIZE_64KB;
1133 	u8  i = 0;
1134 
1135 	if (!num_pb)
1136 		return;
1137 
1138 	/* Setup Rx packet buffer sizes */
1139 	switch (strategy) {
1140 	case PBA_STRATEGY_WEIGHTED:
1141 		/* Setup the first four at 80KB */
1142 		rxpktsize = IXGBE_RXPBSIZE_80KB;
1143 		for (; i < 4; i++)
1144 			IXGBE_WRITE_REG(hw, IXGBE_RXPBSIZE(i), rxpktsize);
1145 		/* Setup the last four at 48KB...don't re-init i */
1146 		rxpktsize = IXGBE_RXPBSIZE_48KB;
1147 		/* Fall Through */
1148 	case PBA_STRATEGY_EQUAL:
1149 	default:
1150 		/* Divide the remaining Rx packet buffer evenly among the TCs */
1151 		for (; i < IXGBE_MAX_PACKET_BUFFERS; i++)
1152 			IXGBE_WRITE_REG(hw, IXGBE_RXPBSIZE(i), rxpktsize);
1153 		break;
1154 	}
1155 
1156 	/* Setup Tx packet buffer sizes */
1157 	for (i = 0; i < IXGBE_MAX_PACKET_BUFFERS; i++)
1158 		IXGBE_WRITE_REG(hw, IXGBE_TXPBSIZE(i), IXGBE_TXPBSIZE_40KB);
1159 }
1160 
1161 static const struct ixgbe_mac_operations mac_ops_82598 = {
1162 	.init_hw		= &ixgbe_init_hw_generic,
1163 	.reset_hw		= &ixgbe_reset_hw_82598,
1164 	.start_hw		= &ixgbe_start_hw_82598,
1165 	.clear_hw_cntrs		= &ixgbe_clear_hw_cntrs_generic,
1166 	.get_media_type		= &ixgbe_get_media_type_82598,
1167 	.enable_rx_dma          = &ixgbe_enable_rx_dma_generic,
1168 	.get_mac_addr		= &ixgbe_get_mac_addr_generic,
1169 	.stop_adapter		= &ixgbe_stop_adapter_generic,
1170 	.get_bus_info           = &ixgbe_get_bus_info_generic,
1171 	.set_lan_id             = &ixgbe_set_lan_id_multi_port_pcie_82598,
1172 	.read_analog_reg8	= &ixgbe_read_analog_reg8_82598,
1173 	.write_analog_reg8	= &ixgbe_write_analog_reg8_82598,
1174 	.setup_link		= &ixgbe_setup_mac_link_82598,
1175 	.set_rxpba		= &ixgbe_set_rxpba_82598,
1176 	.check_link		= &ixgbe_check_mac_link_82598,
1177 	.get_link_capabilities	= &ixgbe_get_link_capabilities_82598,
1178 	.led_on			= &ixgbe_led_on_generic,
1179 	.led_off		= &ixgbe_led_off_generic,
1180 	.init_led_link_act	= ixgbe_init_led_link_act_generic,
1181 	.blink_led_start	= &ixgbe_blink_led_start_generic,
1182 	.blink_led_stop		= &ixgbe_blink_led_stop_generic,
1183 	.set_rar		= &ixgbe_set_rar_generic,
1184 	.clear_rar		= &ixgbe_clear_rar_generic,
1185 	.set_vmdq		= &ixgbe_set_vmdq_82598,
1186 	.clear_vmdq		= &ixgbe_clear_vmdq_82598,
1187 	.init_rx_addrs		= &ixgbe_init_rx_addrs_generic,
1188 	.update_mc_addr_list	= &ixgbe_update_mc_addr_list_generic,
1189 	.enable_mc		= &ixgbe_enable_mc_generic,
1190 	.disable_mc		= &ixgbe_disable_mc_generic,
1191 	.clear_vfta		= &ixgbe_clear_vfta_82598,
1192 	.set_vfta		= &ixgbe_set_vfta_82598,
1193 	.fc_enable		= &ixgbe_fc_enable_82598,
1194 	.setup_fc		= ixgbe_setup_fc_generic,
1195 	.fc_autoneg		= ixgbe_fc_autoneg,
1196 	.set_fw_drv_ver         = NULL,
1197 	.acquire_swfw_sync      = &ixgbe_acquire_swfw_sync,
1198 	.release_swfw_sync      = &ixgbe_release_swfw_sync,
1199 	.init_swfw_sync		= NULL,
1200 	.get_thermal_sensor_data = NULL,
1201 	.init_thermal_sensor_thresh = NULL,
1202 	.prot_autoc_read	= &prot_autoc_read_generic,
1203 	.prot_autoc_write	= &prot_autoc_write_generic,
1204 	.enable_rx		= &ixgbe_enable_rx_generic,
1205 	.disable_rx		= &ixgbe_disable_rx_generic,
1206 };
1207 
1208 static const struct ixgbe_eeprom_operations eeprom_ops_82598 = {
1209 	.init_params		= &ixgbe_init_eeprom_params_generic,
1210 	.read			= &ixgbe_read_eerd_generic,
1211 	.write			= &ixgbe_write_eeprom_generic,
1212 	.write_buffer		= &ixgbe_write_eeprom_buffer_bit_bang_generic,
1213 	.read_buffer		= &ixgbe_read_eerd_buffer_generic,
1214 	.calc_checksum          = &ixgbe_calc_eeprom_checksum_generic,
1215 	.validate_checksum	= &ixgbe_validate_eeprom_checksum_generic,
1216 	.update_checksum	= &ixgbe_update_eeprom_checksum_generic,
1217 };
1218 
1219 static const struct ixgbe_phy_operations phy_ops_82598 = {
1220 	.identify		= &ixgbe_identify_phy_generic,
1221 	.identify_sfp		= &ixgbe_identify_module_generic,
1222 	.init			= &ixgbe_init_phy_ops_82598,
1223 	.reset			= &ixgbe_reset_phy_generic,
1224 	.read_reg		= &ixgbe_read_phy_reg_generic,
1225 	.write_reg		= &ixgbe_write_phy_reg_generic,
1226 	.read_reg_mdi		= &ixgbe_read_phy_reg_mdi,
1227 	.write_reg_mdi		= &ixgbe_write_phy_reg_mdi,
1228 	.setup_link		= &ixgbe_setup_phy_link_generic,
1229 	.setup_link_speed	= &ixgbe_setup_phy_link_speed_generic,
1230 	.read_i2c_sff8472	= &ixgbe_read_i2c_sff8472_82598,
1231 	.read_i2c_eeprom	= &ixgbe_read_i2c_eeprom_82598,
1232 	.check_overtemp		= &ixgbe_tn_check_overtemp,
1233 };
1234 
1235 const struct ixgbe_info ixgbe_82598_info = {
1236 	.mac			= ixgbe_mac_82598EB,
1237 	.get_invariants		= &ixgbe_get_invariants_82598,
1238 	.mac_ops		= &mac_ops_82598,
1239 	.eeprom_ops		= &eeprom_ops_82598,
1240 	.phy_ops		= &phy_ops_82598,
1241 	.mvals			= ixgbe_mvals_8259X,
1242 };
1243