Cross Reference: /freebsd-11-stable/sys/dev/ixgbe/ixgbe

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1/******************************************************************************
2

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.

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: stable/11/sys/dev/ixgbe/ixgbe_82599.c 292674 2015-12-23 22:45:17Z sbruno $*/

33/*$FreeBSD: stable/11/sys/dev/ixgbe/ixgbe_82599.c 320897 2017-07-11 21:25:07Z erj $*/

34
35#include "ixgbe_type.h"
36#include "ixgbe_82599.h"
37#include "ixgbe_api.h"
38#include "ixgbe_common.h"
39#include "ixgbe_phy.h"
40
41#define IXGBE_82599_MAX_TX_QUEUES 128
42#define IXGBE_82599_MAX_RX_QUEUES 128
43#define IXGBE_82599_RAR_ENTRIES 128
44#define IXGBE_82599_MC_TBL_SIZE 128
45#define IXGBE_82599_VFT_TBL_SIZE 128
46#define IXGBE_82599_RX_PB_SIZE 512
47
48static s32 ixgbe_setup_copper_link_82599(struct ixgbe_hw *hw,
49 ixgbe_link_speed speed,
50 bool autoneg_wait_to_complete);
51static s32 ixgbe_verify_fw_version_82599(struct ixgbe_hw *hw);
52static s32 ixgbe_read_eeprom_82599(struct ixgbe_hw *hw,
53 u16 offset, u16 *data);
54static s32 ixgbe_read_eeprom_buffer_82599(struct ixgbe_hw *hw, u16 offset,
55 u16 words, u16 *data);
56static s32 ixgbe_read_i2c_byte_82599(struct ixgbe_hw *hw, u8 byte_offset,
57 u8 dev_addr, u8 *data);
58static s32 ixgbe_write_i2c_byte_82599(struct ixgbe_hw *hw, u8 byte_offset,
59 u8 dev_addr, u8 data);
60
61void ixgbe_init_mac_link_ops_82599(struct ixgbe_hw *hw)
62{
63 struct ixgbe_mac_info *mac = &hw->mac;
64
65 DEBUGFUNC("ixgbe_init_mac_link_ops_82599");
66
67 /*
68 * enable the laser control functions for SFP+ fiber
69 * and MNG not enabled
70 */
71 if ((mac->ops.get_media_type(hw) == ixgbe_media_type_fiber) &&
72 !ixgbe_mng_enabled(hw)) {
73 mac->ops.disable_tx_laser =
74 ixgbe_disable_tx_laser_multispeed_fiber;
75 mac->ops.enable_tx_laser =
76 ixgbe_enable_tx_laser_multispeed_fiber;
77 mac->ops.flap_tx_laser = ixgbe_flap_tx_laser_multispeed_fiber;
78
79 } else {
80 mac->ops.disable_tx_laser = NULL;
81 mac->ops.enable_tx_laser = NULL;
82 mac->ops.flap_tx_laser = NULL;
83 }
84
85 if (hw->phy.multispeed_fiber) {
86 /* Set up dual speed SFP+ support */
87 mac->ops.setup_link = ixgbe_setup_mac_link_multispeed_fiber;
88 mac->ops.setup_mac_link = ixgbe_setup_mac_link_82599;
89 mac->ops.set_rate_select_speed =
90 ixgbe_set_hard_rate_select_speed;
91 if (ixgbe_get_media_type(hw) == ixgbe_media_type_fiber_fixed)
92 mac->ops.set_rate_select_speed =
93 ixgbe_set_soft_rate_select_speed;
94 } else {
95 if ((ixgbe_get_media_type(hw) == ixgbe_media_type_backplane) &&
96 (hw->phy.smart_speed == ixgbe_smart_speed_auto ||
97 hw->phy.smart_speed == ixgbe_smart_speed_on) &&
98 !ixgbe_verify_lesm_fw_enabled_82599(hw)) {
99 mac->ops.setup_link = ixgbe_setup_mac_link_smartspeed;
100 } else {
101 mac->ops.setup_link = ixgbe_setup_mac_link_82599;
102 }
103 }
104}
105
106/**
107 * ixgbe_init_phy_ops_82599 - PHY/SFP specific init
108 * @hw: pointer to hardware structure
109 *
110 * Initialize any function pointers that were not able to be
111 * set during init_shared_code because the PHY/SFP type was
112 * not known. Perform the SFP init if necessary.
113 *
114 **/
115s32 ixgbe_init_phy_ops_82599(struct ixgbe_hw *hw)
116{
117 struct ixgbe_mac_info *mac = &hw->mac;
118 struct ixgbe_phy_info *phy = &hw->phy;
119 s32 ret_val = IXGBE_SUCCESS;
120 u32 esdp;
121
122 DEBUGFUNC("ixgbe_init_phy_ops_82599");
123
124 if (hw->device_id == IXGBE_DEV_ID_82599_QSFP_SF_QP) {
125 /* Store flag indicating I2C bus access control unit. */
126 hw->phy.qsfp_shared_i2c_bus = TRUE;
127
128 /* Initialize access to QSFP+ I2C bus */
129 esdp = IXGBE_READ_REG(hw, IXGBE_ESDP);
130 esdp |= IXGBE_ESDP_SDP0_DIR;
131 esdp &= ~IXGBE_ESDP_SDP1_DIR;
132 esdp &= ~IXGBE_ESDP_SDP0;
133 esdp &= ~IXGBE_ESDP_SDP0_NATIVE;
134 esdp &= ~IXGBE_ESDP_SDP1_NATIVE;
135 IXGBE_WRITE_REG(hw, IXGBE_ESDP, esdp);
136 IXGBE_WRITE_FLUSH(hw);
137
138 phy->ops.read_i2c_byte = ixgbe_read_i2c_byte_82599;
139 phy->ops.write_i2c_byte = ixgbe_write_i2c_byte_82599;
140 }
141 /* Identify the PHY or SFP module */
142 ret_val = phy->ops.identify(hw);
143 if (ret_val == IXGBE_ERR_SFP_NOT_SUPPORTED)
144 goto init_phy_ops_out;
145
146 /* Setup function pointers based on detected SFP module and speeds */
147 ixgbe_init_mac_link_ops_82599(hw);
148 if (hw->phy.sfp_type != ixgbe_sfp_type_unknown)
149 hw->phy.ops.reset = NULL;
150
151 /* If copper media, overwrite with copper function pointers */
152 if (mac->ops.get_media_type(hw) == ixgbe_media_type_copper) {
153 mac->ops.setup_link = ixgbe_setup_copper_link_82599;
154 mac->ops.get_link_capabilities =
155 ixgbe_get_copper_link_capabilities_generic;
156 }
157
158 /* Set necessary function pointers based on PHY type */
159 switch (hw->phy.type) {
160 case ixgbe_phy_tn:
161 phy->ops.setup_link = ixgbe_setup_phy_link_tnx;
162 phy->ops.check_link = ixgbe_check_phy_link_tnx;
163 phy->ops.get_firmware_version =
164 ixgbe_get_phy_firmware_version_tnx;
165 break;
166 default:
167 break;
168 }
169init_phy_ops_out:
170 return ret_val;
171}
172
173s32 ixgbe_setup_sfp_modules_82599(struct ixgbe_hw *hw)
174{
175 s32 ret_val = IXGBE_SUCCESS;
176 u16 list_offset, data_offset, data_value;
177
178 DEBUGFUNC("ixgbe_setup_sfp_modules_82599");
179
180 if (hw->phy.sfp_type != ixgbe_sfp_type_unknown) {
181 ixgbe_init_mac_link_ops_82599(hw);
182
183 hw->phy.ops.reset = NULL;
184
185 ret_val = ixgbe_get_sfp_init_sequence_offsets(hw, &list_offset,
186 &data_offset);
187 if (ret_val != IXGBE_SUCCESS)
188 goto setup_sfp_out;
189
190 /* PHY config will finish before releasing the semaphore */
191 ret_val = hw->mac.ops.acquire_swfw_sync(hw,
192 IXGBE_GSSR_MAC_CSR_SM);
193 if (ret_val != IXGBE_SUCCESS) {
194 ret_val = IXGBE_ERR_SWFW_SYNC;
195 goto setup_sfp_out;
196 }
197
198 if (hw->eeprom.ops.read(hw, ++data_offset, &data_value))
199 goto setup_sfp_err;
200 while (data_value != 0xffff) {
201 IXGBE_WRITE_REG(hw, IXGBE_CORECTL, data_value);
202 IXGBE_WRITE_FLUSH(hw);
203 if (hw->eeprom.ops.read(hw, ++data_offset, &data_value))
204 goto setup_sfp_err;
205 }
206
207 /* Release the semaphore */
208 hw->mac.ops.release_swfw_sync(hw, IXGBE_GSSR_MAC_CSR_SM);
209 /* Delay obtaining semaphore again to allow FW access
210 * prot_autoc_write uses the semaphore too.
211 */
212 msec_delay(hw->eeprom.semaphore_delay);
213
214 /* Restart DSP and set SFI mode */
215 ret_val = hw->mac.ops.prot_autoc_write(hw,
216 hw->mac.orig_autoc | IXGBE_AUTOC_LMS_10G_SERIAL,
217 FALSE);
218
219 if (ret_val) {
220 DEBUGOUT("sfp module setup not complete\n");
221 ret_val = IXGBE_ERR_SFP_SETUP_NOT_COMPLETE;
222 goto setup_sfp_out;
223 }
224
225 }
226
227setup_sfp_out:
228 return ret_val;
229
230setup_sfp_err:
231 /* Release the semaphore */
232 hw->mac.ops.release_swfw_sync(hw, IXGBE_GSSR_MAC_CSR_SM);
233 /* Delay obtaining semaphore again to allow FW access */
234 msec_delay(hw->eeprom.semaphore_delay);
235 ERROR_REPORT2(IXGBE_ERROR_INVALID_STATE,
236 "eeprom read at offset %d failed", data_offset);
237 return IXGBE_ERR_PHY;
238}
239
240/**
241 * prot_autoc_read_82599 - Hides MAC differences needed for AUTOC read
242 * @hw: pointer to hardware structure
243 * @locked: Return the if we locked for this read.
244 * @reg_val: Value we read from AUTOC
245 *
246 * For this part (82599) we need to wrap read-modify-writes with a possible
247 * FW/SW lock. It is assumed this lock will be freed with the next
248 * prot_autoc_write_82599().
249 */
250s32 prot_autoc_read_82599(struct ixgbe_hw *hw, bool *locked, u32 *reg_val)
251{
252 s32 ret_val;
253
254 *locked = FALSE;
255 /* If LESM is on then we need to hold the SW/FW semaphore. */
256 if (ixgbe_verify_lesm_fw_enabled_82599(hw)) {
257 ret_val = hw->mac.ops.acquire_swfw_sync(hw,
258 IXGBE_GSSR_MAC_CSR_SM);
259 if (ret_val != IXGBE_SUCCESS)
260 return IXGBE_ERR_SWFW_SYNC;
261
262 *locked = TRUE;
263 }
264
265 *reg_val = IXGBE_READ_REG(hw, IXGBE_AUTOC);
266 return IXGBE_SUCCESS;
267}
268
269/**
270 * prot_autoc_write_82599 - Hides MAC differences needed for AUTOC write
271 * @hw: pointer to hardware structure
272 * @reg_val: value to write to AUTOC
273 * @locked: bool to indicate whether the SW/FW lock was already taken by
274 * previous proc_autoc_read_82599.
275 *
276 * This part (82599) may need to hold the SW/FW lock around all writes to
277 * AUTOC. Likewise after a write we need to do a pipeline reset.
278 */
279s32 prot_autoc_write_82599(struct ixgbe_hw *hw, u32 autoc, bool locked)
280{
281 s32 ret_val = IXGBE_SUCCESS;
282
283 /* Blocked by MNG FW so bail */
284 if (ixgbe_check_reset_blocked(hw))
285 goto out;
286
287 /* We only need to get the lock if:
288 * - We didn't do it already (in the read part of a read-modify-write)
289 * - LESM is enabled.
290 */
291 if (!locked && ixgbe_verify_lesm_fw_enabled_82599(hw)) {
292 ret_val = hw->mac.ops.acquire_swfw_sync(hw,
293 IXGBE_GSSR_MAC_CSR_SM);
294 if (ret_val != IXGBE_SUCCESS)
295 return IXGBE_ERR_SWFW_SYNC;
296
297 locked = TRUE;
298 }
299
300 IXGBE_WRITE_REG(hw, IXGBE_AUTOC, autoc);
301 ret_val = ixgbe_reset_pipeline_82599(hw);
302
303out:
304 /* Free the SW/FW semaphore as we either grabbed it here or
305 * already had it when this function was called.
306 */
307 if (locked)
308 hw->mac.ops.release_swfw_sync(hw, IXGBE_GSSR_MAC_CSR_SM);
309
310 return ret_val;
311}
312
313/**
314 * ixgbe_init_ops_82599 - Inits func ptrs and MAC type
315 * @hw: pointer to hardware structure
316 *
317 * Initialize the function pointers and assign the MAC type for 82599.
318 * Does not touch the hardware.
319 **/
320
321s32 ixgbe_init_ops_82599(struct ixgbe_hw *hw)
322{
323 struct ixgbe_mac_info *mac = &hw->mac;
324 struct ixgbe_phy_info *phy = &hw->phy;
325 struct ixgbe_eeprom_info *eeprom = &hw->eeprom;
326 s32 ret_val;
327
328 DEBUGFUNC("ixgbe_init_ops_82599");
329
330 ixgbe_init_phy_ops_generic(hw);
331 ret_val = ixgbe_init_ops_generic(hw);
332
333 /* PHY */
334 phy->ops.identify = ixgbe_identify_phy_82599;
335 phy->ops.init = ixgbe_init_phy_ops_82599;
336
337 /* MAC */
338 mac->ops.reset_hw = ixgbe_reset_hw_82599;
339 mac->ops.enable_relaxed_ordering = ixgbe_enable_relaxed_ordering_gen2;
340 mac->ops.get_media_type = ixgbe_get_media_type_82599;
341 mac->ops.get_supported_physical_layer =
342 ixgbe_get_supported_physical_layer_82599;
343 mac->ops.disable_sec_rx_path = ixgbe_disable_sec_rx_path_generic;
344 mac->ops.enable_sec_rx_path = ixgbe_enable_sec_rx_path_generic;
345 mac->ops.enable_rx_dma = ixgbe_enable_rx_dma_82599;
346 mac->ops.read_analog_reg8 = ixgbe_read_analog_reg8_82599;
347 mac->ops.write_analog_reg8 = ixgbe_write_analog_reg8_82599;
348 mac->ops.start_hw = ixgbe_start_hw_82599;
349 mac->ops.get_san_mac_addr = ixgbe_get_san_mac_addr_generic;
350 mac->ops.set_san_mac_addr = ixgbe_set_san_mac_addr_generic;
351 mac->ops.get_device_caps = ixgbe_get_device_caps_generic;
352 mac->ops.get_wwn_prefix = ixgbe_get_wwn_prefix_generic;
353 mac->ops.get_fcoe_boot_status = ixgbe_get_fcoe_boot_status_generic;
354 mac->ops.prot_autoc_read = prot_autoc_read_82599;
355 mac->ops.prot_autoc_write = prot_autoc_write_82599;
356
357 /* RAR, Multicast, VLAN */
358 mac->ops.set_vmdq = ixgbe_set_vmdq_generic;
359 mac->ops.set_vmdq_san_mac = ixgbe_set_vmdq_san_mac_generic;
360 mac->ops.clear_vmdq = ixgbe_clear_vmdq_generic;
361 mac->ops.insert_mac_addr = ixgbe_insert_mac_addr_generic;
362 mac->rar_highwater = 1;
363 mac->ops.set_vfta = ixgbe_set_vfta_generic;
364 mac->ops.set_vlvf = ixgbe_set_vlvf_generic;
365 mac->ops.clear_vfta = ixgbe_clear_vfta_generic;
366 mac->ops.init_uta_tables = ixgbe_init_uta_tables_generic;
367 mac->ops.setup_sfp = ixgbe_setup_sfp_modules_82599;
368 mac->ops.set_mac_anti_spoofing = ixgbe_set_mac_anti_spoofing;
369 mac->ops.set_vlan_anti_spoofing = ixgbe_set_vlan_anti_spoofing;
370
371 /* Link */
372 mac->ops.get_link_capabilities = ixgbe_get_link_capabilities_82599;
373 mac->ops.check_link = ixgbe_check_mac_link_generic;
374 mac->ops.setup_rxpba = ixgbe_set_rxpba_generic;
375 ixgbe_init_mac_link_ops_82599(hw);
376
377 mac->mcft_size = IXGBE_82599_MC_TBL_SIZE;
378 mac->vft_size = IXGBE_82599_VFT_TBL_SIZE;
379 mac->num_rar_entries = IXGBE_82599_RAR_ENTRIES;
380 mac->rx_pb_size = IXGBE_82599_RX_PB_SIZE;
381 mac->max_rx_queues = IXGBE_82599_MAX_RX_QUEUES;
382 mac->max_tx_queues = IXGBE_82599_MAX_TX_QUEUES;
383 mac->max_msix_vectors = ixgbe_get_pcie_msix_count_generic(hw);
384
385 mac->arc_subsystem_valid = !!(IXGBE_READ_REG(hw, IXGBE_FWSM_BY_MAC(hw))
386 & IXGBE_FWSM_MODE_MASK);
387
388 hw->mbx.ops.init_params = ixgbe_init_mbx_params_pf;
389
390 /* EEPROM */
391 eeprom->ops.read = ixgbe_read_eeprom_82599;
392 eeprom->ops.read_buffer = ixgbe_read_eeprom_buffer_82599;
393
394 /* Manageability interface */
395 mac->ops.set_fw_drv_ver = ixgbe_set_fw_drv_ver_generic;
396

397 mac->ops.bypass_rw = ixgbe_bypass_rw_generic;
398 mac->ops.bypass_valid_rd = ixgbe_bypass_valid_rd_generic;
399 mac->ops.bypass_set = ixgbe_bypass_set_generic;
400 mac->ops.bypass_rd_eep = ixgbe_bypass_rd_eep_generic;

401
402 mac->ops.get_rtrup2tc = ixgbe_dcb_get_rtrup2tc_generic;
403
404 return ret_val;
405}
406
407/**
408 * ixgbe_get_link_capabilities_82599 - Determines link capabilities
409 * @hw: pointer to hardware structure
410 * @speed: pointer to link speed
411 * @autoneg: TRUE when autoneg or autotry is enabled
412 *
413 * Determines the link capabilities by reading the AUTOC register.
414 **/
415s32 ixgbe_get_link_capabilities_82599(struct ixgbe_hw *hw,
416 ixgbe_link_speed *speed,
417 bool *autoneg)
418{
419 s32 status = IXGBE_SUCCESS;
420 u32 autoc = 0;
421
422 DEBUGFUNC("ixgbe_get_link_capabilities_82599");
423
424
425 /* Check if 1G SFP module. */
426 if (hw->phy.sfp_type == ixgbe_sfp_type_1g_cu_core0 ||
427 hw->phy.sfp_type == ixgbe_sfp_type_1g_cu_core1 ||
428 hw->phy.sfp_type == ixgbe_sfp_type_1g_lx_core0 ||
429 hw->phy.sfp_type == ixgbe_sfp_type_1g_lx_core1 ||
430 hw->phy.sfp_type == ixgbe_sfp_type_1g_sx_core0 ||
431 hw->phy.sfp_type == ixgbe_sfp_type_1g_sx_core1) {
432 *speed = IXGBE_LINK_SPEED_1GB_FULL;
433 *autoneg = TRUE;
434 goto out;
435 }
436
437 /*
438 * Determine link capabilities based on the stored value of AUTOC,
439 * which represents EEPROM defaults. If AUTOC value has not
440 * been stored, use the current register values.
441 */
442 if (hw->mac.orig_link_settings_stored)
443 autoc = hw->mac.orig_autoc;
444 else
445 autoc = IXGBE_READ_REG(hw, IXGBE_AUTOC);
446
447 switch (autoc & IXGBE_AUTOC_LMS_MASK) {
448 case IXGBE_AUTOC_LMS_1G_LINK_NO_AN:
449 *speed = IXGBE_LINK_SPEED_1GB_FULL;
450 *autoneg = FALSE;
451 break;
452
453 case IXGBE_AUTOC_LMS_10G_LINK_NO_AN:
454 *speed = IXGBE_LINK_SPEED_10GB_FULL;
455 *autoneg = FALSE;
456 break;
457
458 case IXGBE_AUTOC_LMS_1G_AN:
459 *speed = IXGBE_LINK_SPEED_1GB_FULL;
460 *autoneg = TRUE;
461 break;
462
463 case IXGBE_AUTOC_LMS_10G_SERIAL:
464 *speed = IXGBE_LINK_SPEED_10GB_FULL;
465 *autoneg = FALSE;
466 break;
467
468 case IXGBE_AUTOC_LMS_KX4_KX_KR:
469 case IXGBE_AUTOC_LMS_KX4_KX_KR_1G_AN:
470 *speed = IXGBE_LINK_SPEED_UNKNOWN;
471 if (autoc & IXGBE_AUTOC_KR_SUPP)
472 *speed |= IXGBE_LINK_SPEED_10GB_FULL;
473 if (autoc & IXGBE_AUTOC_KX4_SUPP)
474 *speed |= IXGBE_LINK_SPEED_10GB_FULL;
475 if (autoc & IXGBE_AUTOC_KX_SUPP)
476 *speed |= IXGBE_LINK_SPEED_1GB_FULL;
477 *autoneg = TRUE;
478 break;
479
480 case IXGBE_AUTOC_LMS_KX4_KX_KR_SGMII:
481 *speed = IXGBE_LINK_SPEED_100_FULL;
482 if (autoc & IXGBE_AUTOC_KR_SUPP)
483 *speed |= IXGBE_LINK_SPEED_10GB_FULL;
484 if (autoc & IXGBE_AUTOC_KX4_SUPP)
485 *speed |= IXGBE_LINK_SPEED_10GB_FULL;
486 if (autoc & IXGBE_AUTOC_KX_SUPP)
487 *speed |= IXGBE_LINK_SPEED_1GB_FULL;
488 *autoneg = TRUE;
489 break;
490
491 case IXGBE_AUTOC_LMS_SGMII_1G_100M:
492 *speed = IXGBE_LINK_SPEED_1GB_FULL | IXGBE_LINK_SPEED_100_FULL;
493 *autoneg = FALSE;
494 break;
495
496 default:
497 status = IXGBE_ERR_LINK_SETUP;
498 goto out;
499 break;
500 }
501
502 if (hw->phy.multispeed_fiber) {
503 *speed |= IXGBE_LINK_SPEED_10GB_FULL |
504 IXGBE_LINK_SPEED_1GB_FULL;
505
506 /* QSFP must not enable full auto-negotiation
507 * Limited autoneg is enabled at 1G
508 */
509 if (hw->phy.media_type == ixgbe_media_type_fiber_qsfp)
510 *autoneg = FALSE;
511 else
512 *autoneg = TRUE;
513 }
514
515out:
516 return status;
517}
518
519/**
520 * ixgbe_get_media_type_82599 - Get media type
521 * @hw: pointer to hardware structure
522 *
523 * Returns the media type (fiber, copper, backplane)
524 **/
525enum ixgbe_media_type ixgbe_get_media_type_82599(struct ixgbe_hw *hw)
526{
527 enum ixgbe_media_type media_type;
528
529 DEBUGFUNC("ixgbe_get_media_type_82599");
530
531 /* Detect if there is a copper PHY attached. */
532 switch (hw->phy.type) {
533 case ixgbe_phy_cu_unknown:
534 case ixgbe_phy_tn:
535 media_type = ixgbe_media_type_copper;
536 goto out;
537 default:
538 break;
539 }
540
541 switch (hw->device_id) {
542 case IXGBE_DEV_ID_82599_KX4:
543 case IXGBE_DEV_ID_82599_KX4_MEZZ:
544 case IXGBE_DEV_ID_82599_COMBO_BACKPLANE:
545 case IXGBE_DEV_ID_82599_KR:
546 case IXGBE_DEV_ID_82599_BACKPLANE_FCOE:
547 case IXGBE_DEV_ID_82599_XAUI_LOM:
548 /* Default device ID is mezzanine card KX/KX4 */
549 media_type = ixgbe_media_type_backplane;
550 break;
551 case IXGBE_DEV_ID_82599_SFP:
552 case IXGBE_DEV_ID_82599_SFP_FCOE:
553 case IXGBE_DEV_ID_82599_SFP_EM:
554 case IXGBE_DEV_ID_82599_SFP_SF2:
555 case IXGBE_DEV_ID_82599_SFP_SF_QP:
556 case IXGBE_DEV_ID_82599EN_SFP:
557 media_type = ixgbe_media_type_fiber;
558 break;
559 case IXGBE_DEV_ID_82599_CX4:
560 media_type = ixgbe_media_type_cx4;
561 break;
562 case IXGBE_DEV_ID_82599_T3_LOM:
563 media_type = ixgbe_media_type_copper;
564 break;
565 case IXGBE_DEV_ID_82599_QSFP_SF_QP:
566 media_type = ixgbe_media_type_fiber_qsfp;
567 break;
568 case IXGBE_DEV_ID_82599_BYPASS:
569 media_type = ixgbe_media_type_fiber_fixed;
570 hw->phy.multispeed_fiber = TRUE;
571 break;
572 default:
573 media_type = ixgbe_media_type_unknown;
574 break;
575 }
576out:
577 return media_type;
578}
579
580/**
581 * ixgbe_stop_mac_link_on_d3_82599 - Disables link on D3
582 * @hw: pointer to hardware structure
583 *
584 * Disables link during D3 power down sequence.
585 *
586 **/
587void ixgbe_stop_mac_link_on_d3_82599(struct ixgbe_hw *hw)
588{
589 u32 autoc2_reg;
590 u16 ee_ctrl_2 = 0;
591
592 DEBUGFUNC("ixgbe_stop_mac_link_on_d3_82599");
593 ixgbe_read_eeprom(hw, IXGBE_EEPROM_CTRL_2, &ee_ctrl_2);
594
595 if (!ixgbe_mng_present(hw) && !hw->wol_enabled &&
596 ee_ctrl_2 & IXGBE_EEPROM_CCD_BIT) {
597 autoc2_reg = IXGBE_READ_REG(hw, IXGBE_AUTOC2);
598 autoc2_reg |= IXGBE_AUTOC2_LINK_DISABLE_ON_D3_MASK;
599 IXGBE_WRITE_REG(hw, IXGBE_AUTOC2, autoc2_reg);
600 }
601}
602
603/**
604 * ixgbe_start_mac_link_82599 - Setup MAC link settings
605 * @hw: pointer to hardware structure
606 * @autoneg_wait_to_complete: TRUE when waiting for completion is needed
607 *
608 * Configures link settings based on values in the ixgbe_hw struct.
609 * Restarts the link. Performs autonegotiation if needed.
610 **/
611s32 ixgbe_start_mac_link_82599(struct ixgbe_hw *hw,
612 bool autoneg_wait_to_complete)
613{
614 u32 autoc_reg;
615 u32 links_reg;
616 u32 i;
617 s32 status = IXGBE_SUCCESS;
618 bool got_lock = FALSE;
619
620 DEBUGFUNC("ixgbe_start_mac_link_82599");
621
622
623 /* reset_pipeline requires us to hold this lock as it writes to
624 * AUTOC.
625 */
626 if (ixgbe_verify_lesm_fw_enabled_82599(hw)) {
627 status = hw->mac.ops.acquire_swfw_sync(hw,
628 IXGBE_GSSR_MAC_CSR_SM);
629 if (status != IXGBE_SUCCESS)
630 goto out;
631
632 got_lock = TRUE;
633 }
634
635 /* Restart link */
636 ixgbe_reset_pipeline_82599(hw);
637
638 if (got_lock)
639 hw->mac.ops.release_swfw_sync(hw, IXGBE_GSSR_MAC_CSR_SM);
640
641 /* Only poll for autoneg to complete if specified to do so */
642 if (autoneg_wait_to_complete) {
643 autoc_reg = IXGBE_READ_REG(hw, IXGBE_AUTOC);
644 if ((autoc_reg & IXGBE_AUTOC_LMS_MASK) ==
645 IXGBE_AUTOC_LMS_KX4_KX_KR ||
646 (autoc_reg & IXGBE_AUTOC_LMS_MASK) ==
647 IXGBE_AUTOC_LMS_KX4_KX_KR_1G_AN ||
648 (autoc_reg & IXGBE_AUTOC_LMS_MASK) ==
649 IXGBE_AUTOC_LMS_KX4_KX_KR_SGMII) {
650 links_reg = 0; /* Just in case Autoneg time = 0 */
651 for (i = 0; i < IXGBE_AUTO_NEG_TIME; i++) {
652 links_reg = IXGBE_READ_REG(hw, IXGBE_LINKS);
653 if (links_reg & IXGBE_LINKS_KX_AN_COMP)
654 break;
655 msec_delay(100);
656 }
657 if (!(links_reg & IXGBE_LINKS_KX_AN_COMP)) {
658 status = IXGBE_ERR_AUTONEG_NOT_COMPLETE;
659 DEBUGOUT("Autoneg did not complete.\n");
660 }
661 }
662 }
663
664 /* Add delay to filter out noises during initial link setup */
665 msec_delay(50);
666
667out:
668 return status;
669}
670
671/**
672 * ixgbe_disable_tx_laser_multispeed_fiber - Disable Tx laser
673 * @hw: pointer to hardware structure
674 *
675 * The base drivers may require better control over SFP+ module
676 * PHY states. This includes selectively shutting down the Tx
677 * laser on the PHY, effectively halting physical link.
678 **/
679void ixgbe_disable_tx_laser_multispeed_fiber(struct ixgbe_hw *hw)
680{
681 u32 esdp_reg = IXGBE_READ_REG(hw, IXGBE_ESDP);
682
683 /* Blocked by MNG FW so bail */
684 if (ixgbe_check_reset_blocked(hw))
685 return;
686
687 /* Disable Tx laser; allow 100us to go dark per spec */
688 esdp_reg |= IXGBE_ESDP_SDP3;
689 IXGBE_WRITE_REG(hw, IXGBE_ESDP, esdp_reg);
690 IXGBE_WRITE_FLUSH(hw);
691 usec_delay(100);
692}
693
694/**
695 * ixgbe_enable_tx_laser_multispeed_fiber - Enable Tx laser
696 * @hw: pointer to hardware structure
697 *
698 * The base drivers may require better control over SFP+ module
699 * PHY states. This includes selectively turning on the Tx
700 * laser on the PHY, effectively starting physical link.
701 **/
702void ixgbe_enable_tx_laser_multispeed_fiber(struct ixgbe_hw *hw)
703{
704 u32 esdp_reg = IXGBE_READ_REG(hw, IXGBE_ESDP);
705
706 /* Enable Tx laser; allow 100ms to light up */
707 esdp_reg &= ~IXGBE_ESDP_SDP3;
708 IXGBE_WRITE_REG(hw, IXGBE_ESDP, esdp_reg);
709 IXGBE_WRITE_FLUSH(hw);
710 msec_delay(100);
711}
712
713/**
714 * ixgbe_flap_tx_laser_multispeed_fiber - Flap Tx laser
715 * @hw: pointer to hardware structure
716 *
717 * When the driver changes the link speeds that it can support,
718 * it sets autotry_restart to TRUE to indicate that we need to
719 * initiate a new autotry session with the link partner. To do
720 * so, we set the speed then disable and re-enable the Tx laser, to
721 * alert the link partner that it also needs to restart autotry on its
722 * end. This is consistent with TRUE clause 37 autoneg, which also
723 * involves a loss of signal.
724 **/
725void ixgbe_flap_tx_laser_multispeed_fiber(struct ixgbe_hw *hw)
726{
727 DEBUGFUNC("ixgbe_flap_tx_laser_multispeed_fiber");
728
729 /* Blocked by MNG FW so bail */
730 if (ixgbe_check_reset_blocked(hw))
731 return;
732
733 if (hw->mac.autotry_restart) {
734 ixgbe_disable_tx_laser_multispeed_fiber(hw);
735 ixgbe_enable_tx_laser_multispeed_fiber(hw);
736 hw->mac.autotry_restart = FALSE;
737 }
738}
739
740/**
741 * ixgbe_set_hard_rate_select_speed - Set module link speed
742 * @hw: pointer to hardware structure
743 * @speed: link speed to set
744 *
745 * Set module link speed via RS0/RS1 rate select pins.
746 */
747void ixgbe_set_hard_rate_select_speed(struct ixgbe_hw *hw,
748 ixgbe_link_speed speed)
749{
750 u32 esdp_reg = IXGBE_READ_REG(hw, IXGBE_ESDP);
751
752 switch (speed) {
753 case IXGBE_LINK_SPEED_10GB_FULL:
754 esdp_reg |= (IXGBE_ESDP_SDP5_DIR | IXGBE_ESDP_SDP5);
755 break;
756 case IXGBE_LINK_SPEED_1GB_FULL:
757 esdp_reg &= ~IXGBE_ESDP_SDP5;
758 esdp_reg |= IXGBE_ESDP_SDP5_DIR;
759 break;
760 default:
761 DEBUGOUT("Invalid fixed module speed\n");
762 return;
763 }
764
765 IXGBE_WRITE_REG(hw, IXGBE_ESDP, esdp_reg);
766 IXGBE_WRITE_FLUSH(hw);
767}
768
769/**
770 * ixgbe_setup_mac_link_smartspeed - Set MAC link speed using SmartSpeed
771 * @hw: pointer to hardware structure
772 * @speed: new link speed
773 * @autoneg_wait_to_complete: TRUE when waiting for completion is needed
774 *
775 * Implements the Intel SmartSpeed algorithm.
776 **/
777s32 ixgbe_setup_mac_link_smartspeed(struct ixgbe_hw *hw,
778 ixgbe_link_speed speed,
779 bool autoneg_wait_to_complete)
780{
781 s32 status = IXGBE_SUCCESS;
782 ixgbe_link_speed link_speed = IXGBE_LINK_SPEED_UNKNOWN;
783 s32 i, j;
784 bool link_up = FALSE;
785 u32 autoc_reg = IXGBE_READ_REG(hw, IXGBE_AUTOC);
786
787 DEBUGFUNC("ixgbe_setup_mac_link_smartspeed");
788
789 /* Set autoneg_advertised value based on input link speed */
790 hw->phy.autoneg_advertised = 0;
791
792 if (speed & IXGBE_LINK_SPEED_10GB_FULL)
793 hw->phy.autoneg_advertised |= IXGBE_LINK_SPEED_10GB_FULL;
794
795 if (speed & IXGBE_LINK_SPEED_1GB_FULL)
796 hw->phy.autoneg_advertised |= IXGBE_LINK_SPEED_1GB_FULL;
797
798 if (speed & IXGBE_LINK_SPEED_100_FULL)
799 hw->phy.autoneg_advertised |= IXGBE_LINK_SPEED_100_FULL;
800
801 /*
802 * Implement Intel SmartSpeed algorithm. SmartSpeed will reduce the
803 * autoneg advertisement if link is unable to be established at the
804 * highest negotiated rate. This can sometimes happen due to integrity
805 * issues with the physical media connection.
806 */
807
808 /* First, try to get link with full advertisement */
809 hw->phy.smart_speed_active = FALSE;
810 for (j = 0; j < IXGBE_SMARTSPEED_MAX_RETRIES; j++) {
811 status = ixgbe_setup_mac_link_82599(hw, speed,
812 autoneg_wait_to_complete);
813 if (status != IXGBE_SUCCESS)
814 goto out;
815
816 /*
817 * Wait for the controller to acquire link. Per IEEE 802.3ap,
818 * Section 73.10.2, we may have to wait up to 500ms if KR is
819 * attempted, or 200ms if KX/KX4/BX/BX4 is attempted, per
820 * Table 9 in the AN MAS.
821 */
822 for (i = 0; i < 5; i++) {
823 msec_delay(100);
824
825 /* If we have link, just jump out */
826 status = ixgbe_check_link(hw, &link_speed, &link_up,
827 FALSE);
828 if (status != IXGBE_SUCCESS)
829 goto out;
830
831 if (link_up)
832 goto out;
833 }
834 }
835
836 /*
837 * We didn't get link. If we advertised KR plus one of KX4/KX
838 * (or BX4/BX), then disable KR and try again.
839 */
840 if (((autoc_reg & IXGBE_AUTOC_KR_SUPP) == 0) ||
841 ((autoc_reg & IXGBE_AUTOC_KX4_KX_SUPP_MASK) == 0))
842 goto out;
843
844 /* Turn SmartSpeed on to disable KR support */
845 hw->phy.smart_speed_active = TRUE;
846 status = ixgbe_setup_mac_link_82599(hw, speed,
847 autoneg_wait_to_complete);
848 if (status != IXGBE_SUCCESS)
849 goto out;
850
851 /*
852 * Wait for the controller to acquire link. 600ms will allow for
853 * the AN link_fail_inhibit_timer as well for multiple cycles of
854 * parallel detect, both 10g and 1g. This allows for the maximum
855 * connect attempts as defined in the AN MAS table 73-7.
856 */
857 for (i = 0; i < 6; i++) {
858 msec_delay(100);
859
860 /* If we have link, just jump out */
861 status = ixgbe_check_link(hw, &link_speed, &link_up, FALSE);
862 if (status != IXGBE_SUCCESS)
863 goto out;
864
865 if (link_up)
866 goto out;
867 }
868
869 /* We didn't get link. Turn SmartSpeed back off. */
870 hw->phy.smart_speed_active = FALSE;
871 status = ixgbe_setup_mac_link_82599(hw, speed,
872 autoneg_wait_to_complete);
873
874out:
875 if (link_up && (link_speed == IXGBE_LINK_SPEED_1GB_FULL))
876 DEBUGOUT("Smartspeed has downgraded the link speed "
877 "from the maximum advertised\n");
878 return status;
879}
880
881/**
882 * ixgbe_setup_mac_link_82599 - Set MAC link speed
883 * @hw: pointer to hardware structure
884 * @speed: new link speed
885 * @autoneg_wait_to_complete: TRUE when waiting for completion is needed
886 *
887 * Set the link speed in the AUTOC register and restarts link.
888 **/
889s32 ixgbe_setup_mac_link_82599(struct ixgbe_hw *hw,
890 ixgbe_link_speed speed,
891 bool autoneg_wait_to_complete)
892{
893 bool autoneg = FALSE;
894 s32 status = IXGBE_SUCCESS;
895 u32 pma_pmd_1g, link_mode;
896 u32 current_autoc = IXGBE_READ_REG(hw, IXGBE_AUTOC); /* holds the value of AUTOC register at this current point in time */
897 u32 orig_autoc = 0; /* holds the cached value of AUTOC register */
898 u32 autoc = current_autoc; /* Temporary variable used for comparison purposes */
899 u32 autoc2 = IXGBE_READ_REG(hw, IXGBE_AUTOC2);
900 u32 pma_pmd_10g_serial = autoc2 & IXGBE_AUTOC2_10G_SERIAL_PMA_PMD_MASK;
901 u32 links_reg;
902 u32 i;
903 ixgbe_link_speed link_capabilities = IXGBE_LINK_SPEED_UNKNOWN;
904
905 DEBUGFUNC("ixgbe_setup_mac_link_82599");
906
907 /* Check to see if speed passed in is supported. */
908 status = ixgbe_get_link_capabilities(hw, &link_capabilities, &autoneg);
909 if (status)
910 goto out;
911
912 speed &= link_capabilities;
913
914 if (speed == IXGBE_LINK_SPEED_UNKNOWN) {
915 status = IXGBE_ERR_LINK_SETUP;
916 goto out;
917 }
918
919 /* Use stored value (EEPROM defaults) of AUTOC to find KR/KX4 support*/
920 if (hw->mac.orig_link_settings_stored)
921 orig_autoc = hw->mac.orig_autoc;
922 else
923 orig_autoc = autoc;
924
925 link_mode = autoc & IXGBE_AUTOC_LMS_MASK;
926 pma_pmd_1g = autoc & IXGBE_AUTOC_1G_PMA_PMD_MASK;
927
928 if (link_mode == IXGBE_AUTOC_LMS_KX4_KX_KR ||
929 link_mode == IXGBE_AUTOC_LMS_KX4_KX_KR_1G_AN ||
930 link_mode == IXGBE_AUTOC_LMS_KX4_KX_KR_SGMII) {
931 /* Set KX4/KX/KR support according to speed requested */
932 autoc &= ~(IXGBE_AUTOC_KX4_KX_SUPP_MASK | IXGBE_AUTOC_KR_SUPP);
933 if (speed & IXGBE_LINK_SPEED_10GB_FULL) {
934 if (orig_autoc & IXGBE_AUTOC_KX4_SUPP)
935 autoc |= IXGBE_AUTOC_KX4_SUPP;
936 if ((orig_autoc & IXGBE_AUTOC_KR_SUPP) &&
937 (hw->phy.smart_speed_active == FALSE))
938 autoc |= IXGBE_AUTOC_KR_SUPP;
939 }
940 if (speed & IXGBE_LINK_SPEED_1GB_FULL)
941 autoc |= IXGBE_AUTOC_KX_SUPP;
942 } else if ((pma_pmd_1g == IXGBE_AUTOC_1G_SFI) &&
943 (link_mode == IXGBE_AUTOC_LMS_1G_LINK_NO_AN ||
944 link_mode == IXGBE_AUTOC_LMS_1G_AN)) {
945 /* Switch from 1G SFI to 10G SFI if requested */
946 if ((speed == IXGBE_LINK_SPEED_10GB_FULL) &&
947 (pma_pmd_10g_serial == IXGBE_AUTOC2_10G_SFI)) {
948 autoc &= ~IXGBE_AUTOC_LMS_MASK;
949 autoc |= IXGBE_AUTOC_LMS_10G_SERIAL;
950 }
951 } else if ((pma_pmd_10g_serial == IXGBE_AUTOC2_10G_SFI) &&
952 (link_mode == IXGBE_AUTOC_LMS_10G_SERIAL)) {
953 /* Switch from 10G SFI to 1G SFI if requested */
954 if ((speed == IXGBE_LINK_SPEED_1GB_FULL) &&
955 (pma_pmd_1g == IXGBE_AUTOC_1G_SFI)) {
956 autoc &= ~IXGBE_AUTOC_LMS_MASK;
957 if (autoneg || hw->phy.type == ixgbe_phy_qsfp_intel)
958 autoc |= IXGBE_AUTOC_LMS_1G_AN;
959 else
960 autoc |= IXGBE_AUTOC_LMS_1G_LINK_NO_AN;
961 }
962 }
963
964 if (autoc != current_autoc) {
965 /* Restart link */
966 status = hw->mac.ops.prot_autoc_write(hw, autoc, FALSE);
967 if (status != IXGBE_SUCCESS)
968 goto out;
969
970 /* Only poll for autoneg to complete if specified to do so */
971 if (autoneg_wait_to_complete) {
972 if (link_mode == IXGBE_AUTOC_LMS_KX4_KX_KR ||
973 link_mode == IXGBE_AUTOC_LMS_KX4_KX_KR_1G_AN ||
974 link_mode == IXGBE_AUTOC_LMS_KX4_KX_KR_SGMII) {
975 links_reg = 0; /*Just in case Autoneg time=0*/
976 for (i = 0; i < IXGBE_AUTO_NEG_TIME; i++) {
977 links_reg =
978 IXGBE_READ_REG(hw, IXGBE_LINKS);
979 if (links_reg & IXGBE_LINKS_KX_AN_COMP)
980 break;
981 msec_delay(100);
982 }
983 if (!(links_reg & IXGBE_LINKS_KX_AN_COMP)) {
984 status =
985 IXGBE_ERR_AUTONEG_NOT_COMPLETE;
986 DEBUGOUT("Autoneg did not complete.\n");
987 }
988 }
989 }
990
991 /* Add delay to filter out noises during initial link setup */
992 msec_delay(50);
993 }
994
995out:
996 return status;
997}
998
999/**
1000 * ixgbe_setup_copper_link_82599 - Set the PHY autoneg advertised field
1001 * @hw: pointer to hardware structure
1002 * @speed: new link speed
1003 * @autoneg_wait_to_complete: TRUE if waiting is needed to complete
1004 *
1005 * Restarts link on PHY and MAC based on settings passed in.
1006 **/
1007static s32 ixgbe_setup_copper_link_82599(struct ixgbe_hw *hw,
1008 ixgbe_link_speed speed,
1009 bool autoneg_wait_to_complete)
1010{
1011 s32 status;
1012
1013 DEBUGFUNC("ixgbe_setup_copper_link_82599");
1014
1015 /* Setup the PHY according to input speed */
1016 status = hw->phy.ops.setup_link_speed(hw, speed,
1017 autoneg_wait_to_complete);
1018 /* Set up MAC */
1019 ixgbe_start_mac_link_82599(hw, autoneg_wait_to_complete);
1020
1021 return status;
1022}
1023
1024/**
1025 * ixgbe_reset_hw_82599 - Perform hardware reset
1026 * @hw: pointer to hardware structure
1027 *
1028 * Resets the hardware by resetting the transmit and receive units, masks
1029 * and clears all interrupts, perform a PHY reset, and perform a link (MAC)
1030 * reset.
1031 **/
1032s32 ixgbe_reset_hw_82599(struct ixgbe_hw *hw)
1033{
1034 ixgbe_link_speed link_speed;
1035 s32 status;
1036 u32 ctrl = 0;
1037 u32 i, autoc, autoc2;
1038 u32 curr_lms;
1039 bool link_up = FALSE;
1040
1041 DEBUGFUNC("ixgbe_reset_hw_82599");
1042
1043 /* Call adapter stop to disable tx/rx and clear interrupts */
1044 status = hw->mac.ops.stop_adapter(hw);
1045 if (status != IXGBE_SUCCESS)
1046 goto reset_hw_out;
1047
1048 /* flush pending Tx transactions */
1049 ixgbe_clear_tx_pending(hw);
1050
1051 /* PHY ops must be identified and initialized prior to reset */
1052
1053 /* Identify PHY and related function pointers */
1054 status = hw->phy.ops.init(hw);
1055
1056 if (status == IXGBE_ERR_SFP_NOT_SUPPORTED)
1057 goto reset_hw_out;
1058
1059 /* Setup SFP module if there is one present. */
1060 if (hw->phy.sfp_setup_needed) {
1061 status = hw->mac.ops.setup_sfp(hw);
1062 hw->phy.sfp_setup_needed = FALSE;
1063 }
1064
1065 if (status == IXGBE_ERR_SFP_NOT_SUPPORTED)
1066 goto reset_hw_out;
1067
1068 /* Reset PHY */
1069 if (hw->phy.reset_disable == FALSE && hw->phy.ops.reset != NULL)
1070 hw->phy.ops.reset(hw);
1071
1072 /* remember AUTOC from before we reset */
1073 curr_lms = IXGBE_READ_REG(hw, IXGBE_AUTOC) & IXGBE_AUTOC_LMS_MASK;
1074
1075mac_reset_top:
1076 /*
1077 * Issue global reset to the MAC. Needs to be SW reset if link is up.
1078 * If link reset is used when link is up, it might reset the PHY when
1079 * mng is using it. If link is down or the flag to force full link
1080 * reset is set, then perform link reset.
1081 */
1082 ctrl = IXGBE_CTRL_LNK_RST;
1083 if (!hw->force_full_reset) {
1084 hw->mac.ops.check_link(hw, &link_speed, &link_up, FALSE);
1085 if (link_up)
1086 ctrl = IXGBE_CTRL_RST;
1087 }
1088
1089 ctrl |= IXGBE_READ_REG(hw, IXGBE_CTRL);
1090 IXGBE_WRITE_REG(hw, IXGBE_CTRL, ctrl);
1091 IXGBE_WRITE_FLUSH(hw);
1092
1093 /* Poll for reset bit to self-clear meaning reset is complete */
1094 for (i = 0; i < 10; i++) {
1095 usec_delay(1);
1096 ctrl = IXGBE_READ_REG(hw, IXGBE_CTRL);
1097 if (!(ctrl & IXGBE_CTRL_RST_MASK))
1098 break;
1099 }
1100
1101 if (ctrl & IXGBE_CTRL_RST_MASK) {
1102 status = IXGBE_ERR_RESET_FAILED;
1103 DEBUGOUT("Reset polling failed to complete.\n");
1104 }
1105
1106 msec_delay(50);
1107
1108 /*
1109 * Double resets are required for recovery from certain error
1110 * conditions. Between resets, it is necessary to stall to
1111 * allow time for any pending HW events to complete.
1112 */
1113 if (hw->mac.flags & IXGBE_FLAGS_DOUBLE_RESET_REQUIRED) {
1114 hw->mac.flags &= ~IXGBE_FLAGS_DOUBLE_RESET_REQUIRED;
1115 goto mac_reset_top;
1116 }
1117
1118 /*
1119 * Store the original AUTOC/AUTOC2 values if they have not been
1120 * stored off yet. Otherwise restore the stored original
1121 * values since the reset operation sets back to defaults.
1122 */
1123 autoc = IXGBE_READ_REG(hw, IXGBE_AUTOC);
1124 autoc2 = IXGBE_READ_REG(hw, IXGBE_AUTOC2);
1125
1126 /* Enable link if disabled in NVM */
1127 if (autoc2 & IXGBE_AUTOC2_LINK_DISABLE_MASK) {
1128 autoc2 &= ~IXGBE_AUTOC2_LINK_DISABLE_MASK;
1129 IXGBE_WRITE_REG(hw, IXGBE_AUTOC2, autoc2);
1130 IXGBE_WRITE_FLUSH(hw);
1131 }
1132
1133 if (hw->mac.orig_link_settings_stored == FALSE) {
1134 hw->mac.orig_autoc = autoc;
1135 hw->mac.orig_autoc2 = autoc2;
1136 hw->mac.orig_link_settings_stored = TRUE;
1137 } else {
1138
1139 /* If MNG FW is running on a multi-speed device that
1140 * doesn't autoneg with out driver support we need to
1141 * leave LMS in the state it was before we MAC reset.
1142 * Likewise if we support WoL we don't want change the
1143 * LMS state.
1144 */
1145 if ((hw->phy.multispeed_fiber && ixgbe_mng_enabled(hw)) ||
1146 hw->wol_enabled)
1147 hw->mac.orig_autoc =
1148 (hw->mac.orig_autoc & ~IXGBE_AUTOC_LMS_MASK) |
1149 curr_lms;
1150
1151 if (autoc != hw->mac.orig_autoc) {
1152 status = hw->mac.ops.prot_autoc_write(hw,
1153 hw->mac.orig_autoc,
1154 FALSE);
1155 if (status != IXGBE_SUCCESS)
1156 goto reset_hw_out;
1157 }
1158
1159 if ((autoc2 & IXGBE_AUTOC2_UPPER_MASK) !=
1160 (hw->mac.orig_autoc2 & IXGBE_AUTOC2_UPPER_MASK)) {
1161 autoc2 &= ~IXGBE_AUTOC2_UPPER_MASK;
1162 autoc2 |= (hw->mac.orig_autoc2 &
1163 IXGBE_AUTOC2_UPPER_MASK);
1164 IXGBE_WRITE_REG(hw, IXGBE_AUTOC2, autoc2);
1165 }
1166 }
1167
1168 /* Store the permanent mac address */
1169 hw->mac.ops.get_mac_addr(hw, hw->mac.perm_addr);
1170
1171 /*
1172 * Store MAC address from RAR0, clear receive address registers, and
1173 * clear the multicast table. Also reset num_rar_entries to 128,
1174 * since we modify this value when programming the SAN MAC address.
1175 */
1176 hw->mac.num_rar_entries = 128;
1177 hw->mac.ops.init_rx_addrs(hw);
1178
1179 /* Store the permanent SAN mac address */
1180 hw->mac.ops.get_san_mac_addr(hw, hw->mac.san_addr);
1181
1182 /* Add the SAN MAC address to the RAR only if it's a valid address */
1183 if (ixgbe_validate_mac_addr(hw->mac.san_addr) == 0) {

~~1180~~ hw->mac.ops.set_rar(hw, hw->mac.num_rar_entries - 1,
~~1181~~ hw->mac.san_addr, 0, IXGBE_RAH_AV);
~~1182~~

1184 /* Save the SAN MAC RAR index */
1185 hw->mac.san_mac_rar_index = hw->mac.num_rar_entries - 1;
1186

1187 hw->mac.ops.set_rar(hw, hw->mac.san_mac_rar_index,
1188 hw->mac.san_addr, 0, IXGBE_RAH_AV);
1189
1190 /* clear VMDq pool/queue selection for this RAR */
1191 hw->mac.ops.clear_vmdq(hw, hw->mac.san_mac_rar_index,
1192 IXGBE_CLEAR_VMDQ_ALL);
1193

1194 /* Reserve the last RAR for the SAN MAC address */
1195 hw->mac.num_rar_entries--;
1196 }
1197
1198 /* Store the alternative WWNN/WWPN prefix */
1199 hw->mac.ops.get_wwn_prefix(hw, &hw->mac.wwnn_prefix,
1200 &hw->mac.wwpn_prefix);
1201
1202reset_hw_out:
1203 return status;
1204}
1205
1206/**
1207 * ixgbe_fdir_check_cmd_complete - poll to check whether FDIRCMD is complete
1208 * @hw: pointer to hardware structure
1209 * @fdircmd: current value of FDIRCMD register
1210 */
1211static s32 ixgbe_fdir_check_cmd_complete(struct ixgbe_hw *hw, u32 *fdircmd)
1212{
1213 int i;
1214
1215 for (i = 0; i < IXGBE_FDIRCMD_CMD_POLL; i++) {
1216 *fdircmd = IXGBE_READ_REG(hw, IXGBE_FDIRCMD);
1217 if (!(*fdircmd & IXGBE_FDIRCMD_CMD_MASK))
1218 return IXGBE_SUCCESS;
1219 usec_delay(10);
1220 }
1221
1222 return IXGBE_ERR_FDIR_CMD_INCOMPLETE;
1223}
1224
1225/**
1226 * ixgbe_reinit_fdir_tables_82599 - Reinitialize Flow Director tables.
1227 * @hw: pointer to hardware structure
1228 **/
1229s32 ixgbe_reinit_fdir_tables_82599(struct ixgbe_hw *hw)
1230{
1231 s32 err;
1232 int i;
1233 u32 fdirctrl = IXGBE_READ_REG(hw, IXGBE_FDIRCTRL);
1234 u32 fdircmd;
1235 fdirctrl &= ~IXGBE_FDIRCTRL_INIT_DONE;
1236
1237 DEBUGFUNC("ixgbe_reinit_fdir_tables_82599");
1238
1239 /*
1240 * Before starting reinitialization process,
1241 * FDIRCMD.CMD must be zero.
1242 */
1243 err = ixgbe_fdir_check_cmd_complete(hw, &fdircmd);
1244 if (err) {
1245 DEBUGOUT("Flow Director previous command did not complete, aborting table re-initialization.\n");
1246 return err;
1247 }
1248
1249 IXGBE_WRITE_REG(hw, IXGBE_FDIRFREE, 0);
1250 IXGBE_WRITE_FLUSH(hw);
1251 /*
1252 * 82599 adapters flow director init flow cannot be restarted,
1253 * Workaround 82599 silicon errata by performing the following steps
1254 * before re-writing the FDIRCTRL control register with the same value.
1255 * - write 1 to bit 8 of FDIRCMD register &
1256 * - write 0 to bit 8 of FDIRCMD register
1257 */
1258 IXGBE_WRITE_REG(hw, IXGBE_FDIRCMD,
1259 (IXGBE_READ_REG(hw, IXGBE_FDIRCMD) |
1260 IXGBE_FDIRCMD_CLEARHT));
1261 IXGBE_WRITE_FLUSH(hw);
1262 IXGBE_WRITE_REG(hw, IXGBE_FDIRCMD,
1263 (IXGBE_READ_REG(hw, IXGBE_FDIRCMD) &
1264 ~IXGBE_FDIRCMD_CLEARHT));
1265 IXGBE_WRITE_FLUSH(hw);
1266 /*
1267 * Clear FDIR Hash register to clear any leftover hashes
1268 * waiting to be programmed.
1269 */
1270 IXGBE_WRITE_REG(hw, IXGBE_FDIRHASH, 0x00);
1271 IXGBE_WRITE_FLUSH(hw);
1272
1273 IXGBE_WRITE_REG(hw, IXGBE_FDIRCTRL, fdirctrl);
1274 IXGBE_WRITE_FLUSH(hw);
1275
1276 /* Poll init-done after we write FDIRCTRL register */
1277 for (i = 0; i < IXGBE_FDIR_INIT_DONE_POLL; i++) {
1278 if (IXGBE_READ_REG(hw, IXGBE_FDIRCTRL) &
1279 IXGBE_FDIRCTRL_INIT_DONE)
1280 break;
1281 msec_delay(1);
1282 }
1283 if (i >= IXGBE_FDIR_INIT_DONE_POLL) {
1284 DEBUGOUT("Flow Director Signature poll time exceeded!\n");
1285 return IXGBE_ERR_FDIR_REINIT_FAILED;
1286 }
1287
1288 /* Clear FDIR statistics registers (read to clear) */
1289 IXGBE_READ_REG(hw, IXGBE_FDIRUSTAT);
1290 IXGBE_READ_REG(hw, IXGBE_FDIRFSTAT);
1291 IXGBE_READ_REG(hw, IXGBE_FDIRMATCH);
1292 IXGBE_READ_REG(hw, IXGBE_FDIRMISS);
1293 IXGBE_READ_REG(hw, IXGBE_FDIRLEN);
1294
1295 return IXGBE_SUCCESS;
1296}
1297
1298/**
1299 * ixgbe_fdir_enable_82599 - Initialize Flow Director control registers
1300 * @hw: pointer to hardware structure
1301 * @fdirctrl: value to write to flow director control register
1302 **/
1303static void ixgbe_fdir_enable_82599(struct ixgbe_hw *hw, u32 fdirctrl)
1304{
1305 int i;
1306
1307 DEBUGFUNC("ixgbe_fdir_enable_82599");
1308
1309 /* Prime the keys for hashing */
1310 IXGBE_WRITE_REG(hw, IXGBE_FDIRHKEY, IXGBE_ATR_BUCKET_HASH_KEY);
1311 IXGBE_WRITE_REG(hw, IXGBE_FDIRSKEY, IXGBE_ATR_SIGNATURE_HASH_KEY);
1312
1313 /*
1314 * Poll init-done after we write the register. Estimated times:
1315 * 10G: PBALLOC = 11b, timing is 60us
1316 * 1G: PBALLOC = 11b, timing is 600us
1317 * 100M: PBALLOC = 11b, timing is 6ms
1318 *
1319 * Multiple these timings by 4 if under full Rx load
1320 *
1321 * So we'll poll for IXGBE_FDIR_INIT_DONE_POLL times, sleeping for
1322 * 1 msec per poll time. If we're at line rate and drop to 100M, then
1323 * this might not finish in our poll time, but we can live with that
1324 * for now.
1325 */
1326 IXGBE_WRITE_REG(hw, IXGBE_FDIRCTRL, fdirctrl);
1327 IXGBE_WRITE_FLUSH(hw);
1328 for (i = 0; i < IXGBE_FDIR_INIT_DONE_POLL; i++) {
1329 if (IXGBE_READ_REG(hw, IXGBE_FDIRCTRL) &
1330 IXGBE_FDIRCTRL_INIT_DONE)
1331 break;
1332 msec_delay(1);
1333 }
1334
1335 if (i >= IXGBE_FDIR_INIT_DONE_POLL)
1336 DEBUGOUT("Flow Director poll time exceeded!\n");
1337}
1338
1339/**
1340 * ixgbe_init_fdir_signature_82599 - Initialize Flow Director signature filters
1341 * @hw: pointer to hardware structure
1342 * @fdirctrl: value to write to flow director control register, initially
1343 * contains just the value of the Rx packet buffer allocation
1344 **/
1345s32 ixgbe_init_fdir_signature_82599(struct ixgbe_hw *hw, u32 fdirctrl)
1346{
1347 DEBUGFUNC("ixgbe_init_fdir_signature_82599");
1348
1349 /*
1350 * Continue setup of fdirctrl register bits:
1351 * Move the flexible bytes to use the ethertype - shift 6 words
1352 * Set the maximum length per hash bucket to 0xA filters
1353 * Send interrupt when 64 filters are left
1354 */
1355 fdirctrl |= (0x6 << IXGBE_FDIRCTRL_FLEX_SHIFT) |
1356 (0xA << IXGBE_FDIRCTRL_MAX_LENGTH_SHIFT) |
1357 (4 << IXGBE_FDIRCTRL_FULL_THRESH_SHIFT);
1358
1359 /* write hashes and fdirctrl register, poll for completion */
1360 ixgbe_fdir_enable_82599(hw, fdirctrl);
1361
1362 return IXGBE_SUCCESS;
1363}
1364
1365/**
1366 * ixgbe_init_fdir_perfect_82599 - Initialize Flow Director perfect filters
1367 * @hw: pointer to hardware structure
1368 * @fdirctrl: value to write to flow director control register, initially
1369 * contains just the value of the Rx packet buffer allocation
1370 * @cloud_mode: TRUE - cloud mode, FALSE - other mode
1371 **/
1372s32 ixgbe_init_fdir_perfect_82599(struct ixgbe_hw *hw, u32 fdirctrl,
1373 bool cloud_mode)
1374{
1375 DEBUGFUNC("ixgbe_init_fdir_perfect_82599");
1376
1377 /*
1378 * Continue setup of fdirctrl register bits:
1379 * Turn perfect match filtering on
1380 * Report hash in RSS field of Rx wb descriptor
1381 * Initialize the drop queue to queue 127
1382 * Move the flexible bytes to use the ethertype - shift 6 words
1383 * Set the maximum length per hash bucket to 0xA filters
1384 * Send interrupt when 64 (0x4 * 16) filters are left
1385 */
1386 fdirctrl |= IXGBE_FDIRCTRL_PERFECT_MATCH |
1387 IXGBE_FDIRCTRL_REPORT_STATUS |
1388 (IXGBE_FDIR_DROP_QUEUE << IXGBE_FDIRCTRL_DROP_Q_SHIFT) |
1389 (0x6 << IXGBE_FDIRCTRL_FLEX_SHIFT) |
1390 (0xA << IXGBE_FDIRCTRL_MAX_LENGTH_SHIFT) |
1391 (4 << IXGBE_FDIRCTRL_FULL_THRESH_SHIFT);

~~1384~~ if ((hw->mac.type == ixgbe_mac_X550) ||
~~1385~~ (hw->mac.type == ixgbe_mac_X550EM_x))
~~1386~~ fdirctrl |= IXGBE_FDIRCTRL_DROP_NO_MATCH;

1392
1393 if (cloud_mode)
1394 fdirctrl |=(IXGBE_FDIRCTRL_FILTERMODE_CLOUD <<
1395 IXGBE_FDIRCTRL_FILTERMODE_SHIFT);
1396
1397 /* write hashes and fdirctrl register, poll for completion */
1398 ixgbe_fdir_enable_82599(hw, fdirctrl);
1399
1400 return IXGBE_SUCCESS;
1401}
1402
1403/**
1404 * ixgbe_set_fdir_drop_queue_82599 - Set Flow Director drop queue
1405 * @hw: pointer to hardware structure
1406 * @dropqueue: Rx queue index used for the dropped packets
1407 **/
1408void ixgbe_set_fdir_drop_queue_82599(struct ixgbe_hw *hw, u8 dropqueue)
1409{
1410 u32 fdirctrl;
1411
1412 DEBUGFUNC("ixgbe_set_fdir_drop_queue_82599");
1413 /* Clear init done bit and drop queue field */
1414 fdirctrl = IXGBE_READ_REG(hw, IXGBE_FDIRCTRL);
1415 fdirctrl &= ~(IXGBE_FDIRCTRL_DROP_Q_MASK | IXGBE_FDIRCTRL_INIT_DONE);
1416
1417 /* Set drop queue */
1418 fdirctrl |= (dropqueue << IXGBE_FDIRCTRL_DROP_Q_SHIFT);
1419 if ((hw->mac.type == ixgbe_mac_X550) ||

~~1415~~ (hw->mac.type == ixgbe_mac_X550EM_x))

1420 (hw->mac.type == ixgbe_mac_X550EM_x) ||
1421 (hw->mac.type == ixgbe_mac_X550EM_a))

1422 fdirctrl |= IXGBE_FDIRCTRL_DROP_NO_MATCH;
1423
1424 IXGBE_WRITE_REG(hw, IXGBE_FDIRCMD,
1425 (IXGBE_READ_REG(hw, IXGBE_FDIRCMD) |
1426 IXGBE_FDIRCMD_CLEARHT));
1427 IXGBE_WRITE_FLUSH(hw);
1428 IXGBE_WRITE_REG(hw, IXGBE_FDIRCMD,
1429 (IXGBE_READ_REG(hw, IXGBE_FDIRCMD) &
1430 ~IXGBE_FDIRCMD_CLEARHT));
1431 IXGBE_WRITE_FLUSH(hw);
1432
1433 /* write hashes and fdirctrl register, poll for completion */
1434 ixgbe_fdir_enable_82599(hw, fdirctrl);
1435}
1436
1437/*
1438 * These defines allow us to quickly generate all of the necessary instructions
1439 * in the function below by simply calling out IXGBE_COMPUTE_SIG_HASH_ITERATION
1440 * for values 0 through 15
1441 */
1442#define IXGBE_ATR_COMMON_HASH_KEY \
1443 (IXGBE_ATR_BUCKET_HASH_KEY & IXGBE_ATR_SIGNATURE_HASH_KEY)
1444#define IXGBE_COMPUTE_SIG_HASH_ITERATION(_n) \
1445do { \
1446 u32 n = (_n); \
1447 if (IXGBE_ATR_COMMON_HASH_KEY & (0x01 << n)) \
1448 common_hash ^= lo_hash_dword >> n; \
1449 else if (IXGBE_ATR_BUCKET_HASH_KEY & (0x01 << n)) \
1450 bucket_hash ^= lo_hash_dword >> n; \
1451 else if (IXGBE_ATR_SIGNATURE_HASH_KEY & (0x01 << n)) \
1452 sig_hash ^= lo_hash_dword << (16 - n); \
1453 if (IXGBE_ATR_COMMON_HASH_KEY & (0x01 << (n + 16))) \
1454 common_hash ^= hi_hash_dword >> n; \
1455 else if (IXGBE_ATR_BUCKET_HASH_KEY & (0x01 << (n + 16))) \
1456 bucket_hash ^= hi_hash_dword >> n; \
1457 else if (IXGBE_ATR_SIGNATURE_HASH_KEY & (0x01 << (n + 16))) \
1458 sig_hash ^= hi_hash_dword << (16 - n); \
1459} while (0)
1460
1461/**
1462 * ixgbe_atr_compute_sig_hash_82599 - Compute the signature hash
1463 * @stream: input bitstream to compute the hash on
1464 *
1465 * This function is almost identical to the function above but contains
1466 * several optimizations such as unwinding all of the loops, letting the
1467 * compiler work out all of the conditional ifs since the keys are static
1468 * defines, and computing two keys at once since the hashed dword stream
1469 * will be the same for both keys.
1470 **/
1471u32 ixgbe_atr_compute_sig_hash_82599(union ixgbe_atr_hash_dword input,
1472 union ixgbe_atr_hash_dword common)
1473{
1474 u32 hi_hash_dword, lo_hash_dword, flow_vm_vlan;
1475 u32 sig_hash = 0, bucket_hash = 0, common_hash = 0;
1476
1477 /* record the flow_vm_vlan bits as they are a key part to the hash */
1478 flow_vm_vlan = IXGBE_NTOHL(input.dword);
1479
1480 /* generate common hash dword */
1481 hi_hash_dword = IXGBE_NTOHL(common.dword);
1482
1483 /* low dword is word swapped version of common */
1484 lo_hash_dword = (hi_hash_dword >> 16) | (hi_hash_dword << 16);
1485
1486 /* apply flow ID/VM pool/VLAN ID bits to hash words */
1487 hi_hash_dword ^= flow_vm_vlan ^ (flow_vm_vlan >> 16);
1488
1489 /* Process bits 0 and 16 */
1490 IXGBE_COMPUTE_SIG_HASH_ITERATION(0);
1491
1492 /*
1493 * apply flow ID/VM pool/VLAN ID bits to lo hash dword, we had to
1494 * delay this because bit 0 of the stream should not be processed
1495 * so we do not add the VLAN until after bit 0 was processed
1496 */
1497 lo_hash_dword ^= flow_vm_vlan ^ (flow_vm_vlan << 16);
1498
1499 /* Process remaining 30 bit of the key */
1500 IXGBE_COMPUTE_SIG_HASH_ITERATION(1);
1501 IXGBE_COMPUTE_SIG_HASH_ITERATION(2);
1502 IXGBE_COMPUTE_SIG_HASH_ITERATION(3);
1503 IXGBE_COMPUTE_SIG_HASH_ITERATION(4);
1504 IXGBE_COMPUTE_SIG_HASH_ITERATION(5);
1505 IXGBE_COMPUTE_SIG_HASH_ITERATION(6);
1506 IXGBE_COMPUTE_SIG_HASH_ITERATION(7);
1507 IXGBE_COMPUTE_SIG_HASH_ITERATION(8);
1508 IXGBE_COMPUTE_SIG_HASH_ITERATION(9);
1509 IXGBE_COMPUTE_SIG_HASH_ITERATION(10);
1510 IXGBE_COMPUTE_SIG_HASH_ITERATION(11);
1511 IXGBE_COMPUTE_SIG_HASH_ITERATION(12);
1512 IXGBE_COMPUTE_SIG_HASH_ITERATION(13);
1513 IXGBE_COMPUTE_SIG_HASH_ITERATION(14);
1514 IXGBE_COMPUTE_SIG_HASH_ITERATION(15);
1515
1516 /* combine common_hash result with signature and bucket hashes */
1517 bucket_hash ^= common_hash;
1518 bucket_hash &= IXGBE_ATR_HASH_MASK;
1519
1520 sig_hash ^= common_hash << 16;
1521 sig_hash &= IXGBE_ATR_HASH_MASK << 16;
1522
1523 /* return completed signature hash */
1524 return sig_hash ^ bucket_hash;
1525}
1526
1527/**
1528 * ixgbe_atr_add_signature_filter_82599 - Adds a signature hash filter
1529 * @hw: pointer to hardware structure
1530 * @input: unique input dword
1531 * @common: compressed common input dword
1532 * @queue: queue index to direct traffic to
1533 *
1534 * Note that the tunnel bit in input must not be set when the hardware
1535 * tunneling support does not exist.
1536 **/
1537void ixgbe_fdir_add_signature_filter_82599(struct ixgbe_hw *hw,
1538 union ixgbe_atr_hash_dword input,
1539 union ixgbe_atr_hash_dword common,
1540 u8 queue)
1541{
1542 u64 fdirhashcmd;
1543 u8 flow_type;
1544 bool tunnel;
1545 u32 fdircmd;
1546
1547 DEBUGFUNC("ixgbe_fdir_add_signature_filter_82599");
1548
1549 /*
1550 * Get the flow_type in order to program FDIRCMD properly
1551 * lowest 2 bits are FDIRCMD.L4TYPE, third lowest bit is FDIRCMD.IPV6
1552 * fifth is FDIRCMD.TUNNEL_FILTER
1553 */
1554 tunnel = !!(input.formatted.flow_type & IXGBE_ATR_L4TYPE_TUNNEL_MASK);
1555 flow_type = input.formatted.flow_type &
1556 (IXGBE_ATR_L4TYPE_TUNNEL_MASK - 1);
1557 switch (flow_type) {
1558 case IXGBE_ATR_FLOW_TYPE_TCPV4:
1559 case IXGBE_ATR_FLOW_TYPE_UDPV4:
1560 case IXGBE_ATR_FLOW_TYPE_SCTPV4:
1561 case IXGBE_ATR_FLOW_TYPE_TCPV6:
1562 case IXGBE_ATR_FLOW_TYPE_UDPV6:
1563 case IXGBE_ATR_FLOW_TYPE_SCTPV6:
1564 break;
1565 default:
1566 DEBUGOUT(" Error on flow type input\n");
1567 return;
1568 }
1569
1570 /* configure FDIRCMD register */
1571 fdircmd = IXGBE_FDIRCMD_CMD_ADD_FLOW | IXGBE_FDIRCMD_FILTER_UPDATE |
1572 IXGBE_FDIRCMD_LAST | IXGBE_FDIRCMD_QUEUE_EN;
1573 fdircmd |= (u32)flow_type << IXGBE_FDIRCMD_FLOW_TYPE_SHIFT;
1574 fdircmd |= (u32)queue << IXGBE_FDIRCMD_RX_QUEUE_SHIFT;
1575 if (tunnel)
1576 fdircmd |= IXGBE_FDIRCMD_TUNNEL_FILTER;
1577
1578 /*
1579 * The lower 32-bits of fdirhashcmd is for FDIRHASH, the upper 32-bits
1580 * is for FDIRCMD. Then do a 64-bit register write from FDIRHASH.
1581 */
1582 fdirhashcmd = (u64)fdircmd << 32;
1583 fdirhashcmd |= ixgbe_atr_compute_sig_hash_82599(input, common);
1584 IXGBE_WRITE_REG64(hw, IXGBE_FDIRHASH, fdirhashcmd);
1585
1586 DEBUGOUT2("Tx Queue=%x hash=%x\n", queue, (u32)fdirhashcmd);
1587
1588 return;
1589}
1590
1591#define IXGBE_COMPUTE_BKT_HASH_ITERATION(_n) \
1592do { \
1593 u32 n = (_n); \
1594 if (IXGBE_ATR_BUCKET_HASH_KEY & (0x01 << n)) \
1595 bucket_hash ^= lo_hash_dword >> n; \
1596 if (IXGBE_ATR_BUCKET_HASH_KEY & (0x01 << (n + 16))) \
1597 bucket_hash ^= hi_hash_dword >> n; \
1598} while (0)
1599
1600/**
1601 * ixgbe_atr_compute_perfect_hash_82599 - Compute the perfect filter hash
1602 * @atr_input: input bitstream to compute the hash on
1603 * @input_mask: mask for the input bitstream
1604 *
1605 * This function serves two main purposes. First it applies the input_mask
1606 * to the atr_input resulting in a cleaned up atr_input data stream.
1607 * Secondly it computes the hash and stores it in the bkt_hash field at
1608 * the end of the input byte stream. This way it will be available for
1609 * future use without needing to recompute the hash.
1610 **/
1611void ixgbe_atr_compute_perfect_hash_82599(union ixgbe_atr_input *input,
1612 union ixgbe_atr_input *input_mask)
1613{
1614
1615 u32 hi_hash_dword, lo_hash_dword, flow_vm_vlan;
1616 u32 bucket_hash = 0;
1617 u32 hi_dword = 0;
1618 u32 i = 0;
1619
1620 /* Apply masks to input data */
1621 for (i = 0; i < 14; i++)
1622 input->dword_stream[i] &= input_mask->dword_stream[i];
1623
1624 /* record the flow_vm_vlan bits as they are a key part to the hash */
1625 flow_vm_vlan = IXGBE_NTOHL(input->dword_stream[0]);
1626
1627 /* generate common hash dword */
1628 for (i = 1; i <= 13; i++)
1629 hi_dword ^= input->dword_stream[i];
1630 hi_hash_dword = IXGBE_NTOHL(hi_dword);
1631
1632 /* low dword is word swapped version of common */
1633 lo_hash_dword = (hi_hash_dword >> 16) | (hi_hash_dword << 16);
1634
1635 /* apply flow ID/VM pool/VLAN ID bits to hash words */
1636 hi_hash_dword ^= flow_vm_vlan ^ (flow_vm_vlan >> 16);
1637
1638 /* Process bits 0 and 16 */
1639 IXGBE_COMPUTE_BKT_HASH_ITERATION(0);
1640
1641 /*
1642 * apply flow ID/VM pool/VLAN ID bits to lo hash dword, we had to
1643 * delay this because bit 0 of the stream should not be processed
1644 * so we do not add the VLAN until after bit 0 was processed
1645 */
1646 lo_hash_dword ^= flow_vm_vlan ^ (flow_vm_vlan << 16);
1647
1648 /* Process remaining 30 bit of the key */
1649 for (i = 1; i <= 15; i++)
1650 IXGBE_COMPUTE_BKT_HASH_ITERATION(i);
1651
1652 /*
1653 * Limit hash to 13 bits since max bucket count is 8K.
1654 * Store result at the end of the input stream.
1655 */
1656 input->formatted.bkt_hash = bucket_hash & 0x1FFF;
1657}
1658
1659/**
1660 * ixgbe_get_fdirtcpm_82599 - generate a TCP port from atr_input_masks
1661 * @input_mask: mask to be bit swapped
1662 *
1663 * The source and destination port masks for flow director are bit swapped
1664 * in that bit 15 effects bit 0, 14 effects 1, 13, 2 etc. In order to
1665 * generate a correctly swapped value we need to bit swap the mask and that
1666 * is what is accomplished by this function.
1667 **/
1668static u32 ixgbe_get_fdirtcpm_82599(union ixgbe_atr_input *input_mask)
1669{
1670 u32 mask = IXGBE_NTOHS(input_mask->formatted.dst_port);
1671 mask <<= IXGBE_FDIRTCPM_DPORTM_SHIFT;
1672 mask |= IXGBE_NTOHS(input_mask->formatted.src_port);
1673 mask = ((mask & 0x55555555) << 1) | ((mask & 0xAAAAAAAA) >> 1);
1674 mask = ((mask & 0x33333333) << 2) | ((mask & 0xCCCCCCCC) >> 2);
1675 mask = ((mask & 0x0F0F0F0F) << 4) | ((mask & 0xF0F0F0F0) >> 4);
1676 return ((mask & 0x00FF00FF) << 8) | ((mask & 0xFF00FF00) >> 8);
1677}
1678
1679/*
1680 * These two macros are meant to address the fact that we have registers
1681 * that are either all or in part big-endian. As a result on big-endian
1682 * systems we will end up byte swapping the value to little-endian before
1683 * it is byte swapped again and written to the hardware in the original
1684 * big-endian format.
1685 */
1686#define IXGBE_STORE_AS_BE32(_value) \
1687 (((u32)(_value) >> 24) | (((u32)(_value) & 0x00FF0000) >> 8) | \
1688 (((u32)(_value) & 0x0000FF00) << 8) | ((u32)(_value) << 24))
1689
1690#define IXGBE_WRITE_REG_BE32(a, reg, value) \
1691 IXGBE_WRITE_REG((a), (reg), IXGBE_STORE_AS_BE32(IXGBE_NTOHL(value)))
1692
1693#define IXGBE_STORE_AS_BE16(_value) \
1694 IXGBE_NTOHS(((u16)(_value) >> 8) | ((u16)(_value) << 8))
1695
1696s32 ixgbe_fdir_set_input_mask_82599(struct ixgbe_hw *hw,
1697 union ixgbe_atr_input *input_mask, bool cloud_mode)
1698{
1699 /* mask IPv6 since it is currently not supported */
1700 u32 fdirm = IXGBE_FDIRM_DIPv6;
1701 u32 fdirtcpm;
1702 u32 fdirip6m;
1703 DEBUGFUNC("ixgbe_fdir_set_atr_input_mask_82599");
1704
1705 /*
1706 * Program the relevant mask registers. If src/dst_port or src/dst_addr
1707 * are zero, then assume a full mask for that field. Also assume that
1708 * a VLAN of 0 is unspecified, so mask that out as well. L4type
1709 * cannot be masked out in this implementation.
1710 *
1711 * This also assumes IPv4 only. IPv6 masking isn't supported at this
1712 * point in time.
1713 */
1714
1715 /* verify bucket hash is cleared on hash generation */
1716 if (input_mask->formatted.bkt_hash)
1717 DEBUGOUT(" bucket hash should always be 0 in mask\n");
1718
1719 /* Program FDIRM and verify partial masks */
1720 switch (input_mask->formatted.vm_pool & 0x7F) {
1721 case 0x0:
1722 fdirm |= IXGBE_FDIRM_POOL;
1723 case 0x7F:
1724 break;
1725 default:
1726 DEBUGOUT(" Error on vm pool mask\n");
1727 return IXGBE_ERR_CONFIG;
1728 }
1729
1730 switch (input_mask->formatted.flow_type & IXGBE_ATR_L4TYPE_MASK) {
1731 case 0x0:
1732 fdirm |= IXGBE_FDIRM_L4P;
1733 if (input_mask->formatted.dst_port ||
1734 input_mask->formatted.src_port) {
1735 DEBUGOUT(" Error on src/dst port mask\n");
1736 return IXGBE_ERR_CONFIG;
1737 }
1738 case IXGBE_ATR_L4TYPE_MASK:
1739 break;
1740 default:
1741 DEBUGOUT(" Error on flow type mask\n");
1742 return IXGBE_ERR_CONFIG;
1743 }
1744
1745 switch (IXGBE_NTOHS(input_mask->formatted.vlan_id) & 0xEFFF) {
1746 case 0x0000:

~~1741~~ /* mask VLAN ID, fall through to mask VLAN priority */

1747 /* mask VLAN ID */

1748 fdirm |= IXGBE_FDIRM_VLANID;

1749 /* fall through */

1750 case 0x0FFF:
1751 /* mask VLAN priority */
1752 fdirm |= IXGBE_FDIRM_VLANP;
1753 break;
1754 case 0xE000:

~~1748~~ /* mask VLAN ID only, fall through */

1755 /* mask VLAN ID only */

1756 fdirm |= IXGBE_FDIRM_VLANID;

1757 /* fall through */

1758 case 0xEFFF:
1759 /* no VLAN fields masked */
1760 break;
1761 default:
1762 DEBUGOUT(" Error on VLAN mask\n");
1763 return IXGBE_ERR_CONFIG;
1764 }
1765
1766 switch (input_mask->formatted.flex_bytes & 0xFFFF) {
1767 case 0x0000:

~~1760~~ /* Mask Flex Bytes, fall through */

1768 /* Mask Flex Bytes */

1769 fdirm |= IXGBE_FDIRM_FLEX;

1770 /* fall through */

1771 case 0xFFFF:
1772 break;
1773 default:
1774 DEBUGOUT(" Error on flexible byte mask\n");
1775 return IXGBE_ERR_CONFIG;
1776 }
1777
1778 if (cloud_mode) {
1779 fdirm |= IXGBE_FDIRM_L3P;
1780 fdirip6m = ((u32) 0xFFFFU << IXGBE_FDIRIP6M_DIPM_SHIFT);
1781 fdirip6m |= IXGBE_FDIRIP6M_ALWAYS_MASK;
1782
1783 switch (input_mask->formatted.inner_mac[0] & 0xFF) {
1784 case 0x00:
1785 /* Mask inner MAC, fall through */
1786 fdirip6m |= IXGBE_FDIRIP6M_INNER_MAC;
1787 case 0xFF:
1788 break;
1789 default:
1790 DEBUGOUT(" Error on inner_mac byte mask\n");
1791 return IXGBE_ERR_CONFIG;
1792 }
1793
1794 switch (input_mask->formatted.tni_vni & 0xFFFFFFFF) {
1795 case 0x0:
1796 /* Mask vxlan id */
1797 fdirip6m |= IXGBE_FDIRIP6M_TNI_VNI;
1798 break;
1799 case 0x00FFFFFF:
1800 fdirip6m |= IXGBE_FDIRIP6M_TNI_VNI_24;
1801 break;
1802 case 0xFFFFFFFF:
1803 break;
1804 default:
1805 DEBUGOUT(" Error on TNI/VNI byte mask\n");
1806 return IXGBE_ERR_CONFIG;
1807 }
1808
1809 switch (input_mask->formatted.tunnel_type & 0xFFFF) {
1810 case 0x0:
1811 /* Mask turnnel type, fall through */
1812 fdirip6m |= IXGBE_FDIRIP6M_TUNNEL_TYPE;
1813 case 0xFFFF:
1814 break;
1815 default:
1816 DEBUGOUT(" Error on tunnel type byte mask\n");
1817 return IXGBE_ERR_CONFIG;
1818 }
1819 IXGBE_WRITE_REG_BE32(hw, IXGBE_FDIRIP6M, fdirip6m);
1820

~~1812~~ /* Set all bits in FDIRTCPM, FDIRUDPM, FDIRSIP4M and
~~1813~~ * FDIRDIP4M in cloud mode to allow L3/L3 packets to
~~1814~~ * tunnel.

1821 /* Set all bits in FDIRTCPM, FDIRUDPM, FDIRSCTPM,
1822 * FDIRSIP4M and FDIRDIP4M in cloud mode to allow
1823 * L3/L3 packets to tunnel.

1824 */
1825 IXGBE_WRITE_REG(hw, IXGBE_FDIRTCPM, 0xFFFFFFFF);
1826 IXGBE_WRITE_REG(hw, IXGBE_FDIRUDPM, 0xFFFFFFFF);
1827 IXGBE_WRITE_REG_BE32(hw, IXGBE_FDIRDIP4M, 0xFFFFFFFF);
1828 IXGBE_WRITE_REG_BE32(hw, IXGBE_FDIRSIP4M, 0xFFFFFFFF);

1829 switch (hw->mac.type) {
1830 case ixgbe_mac_X550:
1831 case ixgbe_mac_X550EM_x:
1832 case ixgbe_mac_X550EM_a:
1833 IXGBE_WRITE_REG(hw, IXGBE_FDIRSCTPM, 0xFFFFFFFF);
1834 break;
1835 default:
1836 break;
1837 }

1838 }
1839
1840 /* Now mask VM pool and destination IPv6 - bits 5 and 2 */
1841 IXGBE_WRITE_REG(hw, IXGBE_FDIRM, fdirm);
1842
1843 if (!cloud_mode) {
1844 /* store the TCP/UDP port masks, bit reversed from port
1845 * layout */
1846 fdirtcpm = ixgbe_get_fdirtcpm_82599(input_mask);
1847
1848 /* write both the same so that UDP and TCP use the same mask */
1849 IXGBE_WRITE_REG(hw, IXGBE_FDIRTCPM, ~fdirtcpm);
1850 IXGBE_WRITE_REG(hw, IXGBE_FDIRUDPM, ~fdirtcpm);
1851 /* also use it for SCTP */
1852 switch (hw->mac.type) {
1853 case ixgbe_mac_X550:
1854 case ixgbe_mac_X550EM_x:

1855 case ixgbe_mac_X550EM_a:

1856 IXGBE_WRITE_REG(hw, IXGBE_FDIRSCTPM, ~fdirtcpm);
1857 break;
1858 default:
1859 break;
1860 }
1861
1862 /* store source and destination IP masks (big-enian) */
1863 IXGBE_WRITE_REG_BE32(hw, IXGBE_FDIRSIP4M,
1864 ~input_mask->formatted.src_ip[0]);
1865 IXGBE_WRITE_REG_BE32(hw, IXGBE_FDIRDIP4M,
1866 ~input_mask->formatted.dst_ip[0]);
1867 }
1868 return IXGBE_SUCCESS;
1869}
1870
1871s32 ixgbe_fdir_write_perfect_filter_82599(struct ixgbe_hw *hw,
1872 union ixgbe_atr_input *input,
1873 u16 soft_id, u8 queue, bool cloud_mode)
1874{
1875 u32 fdirport, fdirvlan, fdirhash, fdircmd;
1876 u32 addr_low, addr_high;
1877 u32 cloud_type = 0;
1878 s32 err;
1879
1880 DEBUGFUNC("ixgbe_fdir_write_perfect_filter_82599");
1881 if (!cloud_mode) {
1882 /* currently IPv6 is not supported, must be programmed with 0 */
1883 IXGBE_WRITE_REG_BE32(hw, IXGBE_FDIRSIPv6(0),
1884 input->formatted.src_ip[0]);
1885 IXGBE_WRITE_REG_BE32(hw, IXGBE_FDIRSIPv6(1),
1886 input->formatted.src_ip[1]);
1887 IXGBE_WRITE_REG_BE32(hw, IXGBE_FDIRSIPv6(2),
1888 input->formatted.src_ip[2]);
1889
1890 /* record the source address (big-endian) */
1891 IXGBE_WRITE_REG_BE32(hw, IXGBE_FDIRIPSA,
1892 input->formatted.src_ip[0]);
1893
1894 /* record the first 32 bits of the destination address
1895 * (big-endian) */
1896 IXGBE_WRITE_REG_BE32(hw, IXGBE_FDIRIPDA,
1897 input->formatted.dst_ip[0]);
1898
1899 /* record source and destination port (little-endian)*/
1900 fdirport = IXGBE_NTOHS(input->formatted.dst_port);
1901 fdirport <<= IXGBE_FDIRPORT_DESTINATION_SHIFT;
1902 fdirport |= IXGBE_NTOHS(input->formatted.src_port);
1903 IXGBE_WRITE_REG(hw, IXGBE_FDIRPORT, fdirport);
1904 }
1905
1906 /* record VLAN (little-endian) and flex_bytes(big-endian) */
1907 fdirvlan = IXGBE_STORE_AS_BE16(input->formatted.flex_bytes);
1908 fdirvlan <<= IXGBE_FDIRVLAN_FLEX_SHIFT;
1909 fdirvlan |= IXGBE_NTOHS(input->formatted.vlan_id);
1910 IXGBE_WRITE_REG(hw, IXGBE_FDIRVLAN, fdirvlan);
1911
1912 if (cloud_mode) {
1913 if (input->formatted.tunnel_type != 0)
1914 cloud_type = 0x80000000;
1915
1916 addr_low = ((u32)input->formatted.inner_mac[0] |
1917 ((u32)input->formatted.inner_mac[1] << 8) |
1918 ((u32)input->formatted.inner_mac[2] << 16) |
1919 ((u32)input->formatted.inner_mac[3] << 24));
1920 addr_high = ((u32)input->formatted.inner_mac[4] |
1921 ((u32)input->formatted.inner_mac[5] << 8));
1922 cloud_type |= addr_high;
1923 IXGBE_WRITE_REG_BE32(hw, IXGBE_FDIRSIPv6(0), addr_low);
1924 IXGBE_WRITE_REG_BE32(hw, IXGBE_FDIRSIPv6(1), cloud_type);
1925 IXGBE_WRITE_REG_BE32(hw, IXGBE_FDIRSIPv6(2), input->formatted.tni_vni);
1926 }
1927
1928 /* configure FDIRHASH register */
1929 fdirhash = input->formatted.bkt_hash;
1930 fdirhash |= soft_id << IXGBE_FDIRHASH_SIG_SW_INDEX_SHIFT;
1931 IXGBE_WRITE_REG(hw, IXGBE_FDIRHASH, fdirhash);
1932
1933 /*
1934 * flush all previous writes to make certain registers are
1935 * programmed prior to issuing the command
1936 */
1937 IXGBE_WRITE_FLUSH(hw);
1938
1939 /* configure FDIRCMD register */
1940 fdircmd = IXGBE_FDIRCMD_CMD_ADD_FLOW | IXGBE_FDIRCMD_FILTER_UPDATE |
1941 IXGBE_FDIRCMD_LAST | IXGBE_FDIRCMD_QUEUE_EN;
1942 if (queue == IXGBE_FDIR_DROP_QUEUE)
1943 fdircmd |= IXGBE_FDIRCMD_DROP;
1944 if (input->formatted.flow_type & IXGBE_ATR_L4TYPE_TUNNEL_MASK)
1945 fdircmd |= IXGBE_FDIRCMD_TUNNEL_FILTER;
1946 fdircmd |= input->formatted.flow_type << IXGBE_FDIRCMD_FLOW_TYPE_SHIFT;
1947 fdircmd |= (u32)queue << IXGBE_FDIRCMD_RX_QUEUE_SHIFT;
1948 fdircmd |= (u32)input->formatted.vm_pool << IXGBE_FDIRCMD_VT_POOL_SHIFT;
1949
1950 IXGBE_WRITE_REG(hw, IXGBE_FDIRCMD, fdircmd);
1951 err = ixgbe_fdir_check_cmd_complete(hw, &fdircmd);
1952 if (err) {
1953 DEBUGOUT("Flow Director command did not complete!\n");
1954 return err;
1955 }
1956
1957 return IXGBE_SUCCESS;
1958}
1959
1960s32 ixgbe_fdir_erase_perfect_filter_82599(struct ixgbe_hw *hw,
1961 union ixgbe_atr_input *input,
1962 u16 soft_id)
1963{
1964 u32 fdirhash;
1965 u32 fdircmd;
1966 s32 err;
1967
1968 /* configure FDIRHASH register */
1969 fdirhash = input->formatted.bkt_hash;
1970 fdirhash |= soft_id << IXGBE_FDIRHASH_SIG_SW_INDEX_SHIFT;
1971 IXGBE_WRITE_REG(hw, IXGBE_FDIRHASH, fdirhash);
1972
1973 /* flush hash to HW */
1974 IXGBE_WRITE_FLUSH(hw);
1975
1976 /* Query if filter is present */
1977 IXGBE_WRITE_REG(hw, IXGBE_FDIRCMD, IXGBE_FDIRCMD_CMD_QUERY_REM_FILT);
1978
1979 err = ixgbe_fdir_check_cmd_complete(hw, &fdircmd);
1980 if (err) {
1981 DEBUGOUT("Flow Director command did not complete!\n");
1982 return err;
1983 }
1984
1985 /* if filter exists in hardware then remove it */
1986 if (fdircmd & IXGBE_FDIRCMD_FILTER_VALID) {
1987 IXGBE_WRITE_REG(hw, IXGBE_FDIRHASH, fdirhash);
1988 IXGBE_WRITE_FLUSH(hw);
1989 IXGBE_WRITE_REG(hw, IXGBE_FDIRCMD,
1990 IXGBE_FDIRCMD_CMD_REMOVE_FLOW);
1991 }
1992
1993 return IXGBE_SUCCESS;
1994}
1995
1996/**
1997 * ixgbe_fdir_add_perfect_filter_82599 - Adds a perfect filter
1998 * @hw: pointer to hardware structure
1999 * @input: input bitstream
2000 * @input_mask: mask for the input bitstream
2001 * @soft_id: software index for the filters
2002 * @queue: queue index to direct traffic to
2003 *
2004 * Note that the caller to this function must lock before calling, since the
2005 * hardware writes must be protected from one another.
2006 **/
2007s32 ixgbe_fdir_add_perfect_filter_82599(struct ixgbe_hw *hw,
2008 union ixgbe_atr_input *input,
2009 union ixgbe_atr_input *input_mask,
2010 u16 soft_id, u8 queue, bool cloud_mode)
2011{
2012 s32 err = IXGBE_ERR_CONFIG;
2013
2014 DEBUGFUNC("ixgbe_fdir_add_perfect_filter_82599");
2015
2016 /*
2017 * Check flow_type formatting, and bail out before we touch the hardware
2018 * if there's a configuration issue
2019 */
2020 switch (input->formatted.flow_type) {
2021 case IXGBE_ATR_FLOW_TYPE_IPV4:
2022 case IXGBE_ATR_FLOW_TYPE_TUNNELED_IPV4:
2023 input_mask->formatted.flow_type = IXGBE_ATR_L4TYPE_IPV6_MASK;
2024 if (input->formatted.dst_port || input->formatted.src_port) {
2025 DEBUGOUT(" Error on src/dst port\n");
2026 return IXGBE_ERR_CONFIG;
2027 }
2028 break;
2029 case IXGBE_ATR_FLOW_TYPE_SCTPV4:
2030 case IXGBE_ATR_FLOW_TYPE_TUNNELED_SCTPV4:
2031 if (input->formatted.dst_port || input->formatted.src_port) {
2032 DEBUGOUT(" Error on src/dst port\n");
2033 return IXGBE_ERR_CONFIG;
2034 }

2035 /* fall through */

2036 case IXGBE_ATR_FLOW_TYPE_TCPV4:
2037 case IXGBE_ATR_FLOW_TYPE_TUNNELED_TCPV4:
2038 case IXGBE_ATR_FLOW_TYPE_UDPV4:
2039 case IXGBE_ATR_FLOW_TYPE_TUNNELED_UDPV4:
2040 input_mask->formatted.flow_type = IXGBE_ATR_L4TYPE_IPV6_MASK |
2041 IXGBE_ATR_L4TYPE_MASK;
2042 break;
2043 default:
2044 DEBUGOUT(" Error on flow type input\n");
2045 return err;
2046 }
2047
2048 /* program input mask into the HW */
2049 err = ixgbe_fdir_set_input_mask_82599(hw, input_mask, cloud_mode);
2050 if (err)
2051 return err;
2052
2053 /* apply mask and compute/store hash */
2054 ixgbe_atr_compute_perfect_hash_82599(input, input_mask);
2055
2056 /* program filters to filter memory */
2057 return ixgbe_fdir_write_perfect_filter_82599(hw, input,
2058 soft_id, queue, cloud_mode);
2059}
2060
2061/**
2062 * ixgbe_read_analog_reg8_82599 - Reads 8 bit Omer analog register
2063 * @hw: pointer to hardware structure
2064 * @reg: analog register to read
2065 * @val: read value
2066 *
2067 * Performs read operation to Omer analog register specified.
2068 **/
2069s32 ixgbe_read_analog_reg8_82599(struct ixgbe_hw *hw, u32 reg, u8 *val)
2070{
2071 u32 core_ctl;
2072
2073 DEBUGFUNC("ixgbe_read_analog_reg8_82599");
2074
2075 IXGBE_WRITE_REG(hw, IXGBE_CORECTL, IXGBE_CORECTL_WRITE_CMD |
2076 (reg << 8));
2077 IXGBE_WRITE_FLUSH(hw);
2078 usec_delay(10);
2079 core_ctl = IXGBE_READ_REG(hw, IXGBE_CORECTL);
2080 *val = (u8)core_ctl;
2081
2082 return IXGBE_SUCCESS;
2083}
2084
2085/**
2086 * ixgbe_write_analog_reg8_82599 - Writes 8 bit Omer analog register
2087 * @hw: pointer to hardware structure
2088 * @reg: atlas register to write
2089 * @val: value to write
2090 *
2091 * Performs write operation to Omer analog register specified.
2092 **/
2093s32 ixgbe_write_analog_reg8_82599(struct ixgbe_hw *hw, u32 reg, u8 val)
2094{
2095 u32 core_ctl;
2096
2097 DEBUGFUNC("ixgbe_write_analog_reg8_82599");
2098
2099 core_ctl = (reg << 8) | val;
2100 IXGBE_WRITE_REG(hw, IXGBE_CORECTL, core_ctl);
2101 IXGBE_WRITE_FLUSH(hw);
2102 usec_delay(10);
2103
2104 return IXGBE_SUCCESS;
2105}
2106
2107/**
2108 * ixgbe_start_hw_82599 - Prepare hardware for Tx/Rx
2109 * @hw: pointer to hardware structure
2110 *
2111 * Starts the hardware using the generic start_hw function
2112 * and the generation start_hw function.
2113 * Then performs revision-specific operations, if any.
2114 **/
2115s32 ixgbe_start_hw_82599(struct ixgbe_hw *hw)
2116{
2117 s32 ret_val = IXGBE_SUCCESS;
2118
2119 DEBUGFUNC("ixgbe_start_hw_82599");
2120
2121 ret_val = ixgbe_start_hw_generic(hw);
2122 if (ret_val != IXGBE_SUCCESS)
2123 goto out;
2124
2125 ret_val = ixgbe_start_hw_gen2(hw);
2126 if (ret_val != IXGBE_SUCCESS)
2127 goto out;
2128
2129 /* We need to run link autotry after the driver loads */
2130 hw->mac.autotry_restart = TRUE;
2131
2132 if (ret_val == IXGBE_SUCCESS)
2133 ret_val = ixgbe_verify_fw_version_82599(hw);
2134out:
2135 return ret_val;
2136}
2137
2138/**
2139 * ixgbe_identify_phy_82599 - Get physical layer module
2140 * @hw: pointer to hardware structure
2141 *
2142 * Determines the physical layer module found on the current adapter.
2143 * If PHY already detected, maintains current PHY type in hw struct,
2144 * otherwise executes the PHY detection routine.
2145 **/
2146s32 ixgbe_identify_phy_82599(struct ixgbe_hw *hw)
2147{
2148 s32 status;
2149
2150 DEBUGFUNC("ixgbe_identify_phy_82599");
2151
2152 /* Detect PHY if not unknown - returns success if already detected. */
2153 status = ixgbe_identify_phy_generic(hw);
2154 if (status != IXGBE_SUCCESS) {
2155 /* 82599 10GBASE-T requires an external PHY */
2156 if (hw->mac.ops.get_media_type(hw) == ixgbe_media_type_copper)
2157 return status;
2158 else
2159 status = ixgbe_identify_module_generic(hw);
2160 }
2161
2162 /* Set PHY type none if no PHY detected */
2163 if (hw->phy.type == ixgbe_phy_unknown) {
2164 hw->phy.type = ixgbe_phy_none;
2165 return IXGBE_SUCCESS;
2166 }
2167
2168 /* Return error if SFP module has been detected but is not supported */
2169 if (hw->phy.type == ixgbe_phy_sfp_unsupported)
2170 return IXGBE_ERR_SFP_NOT_SUPPORTED;
2171
2172 return status;
2173}
2174
2175/**
2176 * ixgbe_get_supported_physical_layer_82599 - Returns physical layer type
2177 * @hw: pointer to hardware structure
2178 *
2179 * Determines physical layer capabilities of the current configuration.
2180 **/

~~2161~~u32 ixgbe_get_supported_physical_layer_82599(struct ixgbe_hw *hw)

2181u64 ixgbe_get_supported_physical_layer_82599(struct ixgbe_hw *hw)

2182{

~~2163~~ u32 physical_layer = IXGBE_PHYSICAL_LAYER_UNKNOWN;

2183 u64 physical_layer = IXGBE_PHYSICAL_LAYER_UNKNOWN;

2184 u32 autoc = IXGBE_READ_REG(hw, IXGBE_AUTOC);
2185 u32 autoc2 = IXGBE_READ_REG(hw, IXGBE_AUTOC2);
2186 u32 pma_pmd_10g_serial = autoc2 & IXGBE_AUTOC2_10G_SERIAL_PMA_PMD_MASK;
2187 u32 pma_pmd_10g_parallel = autoc & IXGBE_AUTOC_10G_PMA_PMD_MASK;
2188 u32 pma_pmd_1g = autoc & IXGBE_AUTOC_1G_PMA_PMD_MASK;
2189 u16 ext_ability = 0;
2190
2191 DEBUGFUNC("ixgbe_get_support_physical_layer_82599");
2192
2193 hw->phy.ops.identify(hw);
2194
2195 switch (hw->phy.type) {
2196 case ixgbe_phy_tn:
2197 case ixgbe_phy_cu_unknown:
2198 hw->phy.ops.read_reg(hw, IXGBE_MDIO_PHY_EXT_ABILITY,
2199 IXGBE_MDIO_PMA_PMD_DEV_TYPE, &ext_ability);
2200 if (ext_ability & IXGBE_MDIO_PHY_10GBASET_ABILITY)
2201 physical_layer |= IXGBE_PHYSICAL_LAYER_10GBASE_T;
2202 if (ext_ability & IXGBE_MDIO_PHY_1000BASET_ABILITY)
2203 physical_layer |= IXGBE_PHYSICAL_LAYER_1000BASE_T;
2204 if (ext_ability & IXGBE_MDIO_PHY_100BASETX_ABILITY)
2205 physical_layer |= IXGBE_PHYSICAL_LAYER_100BASE_TX;
2206 goto out;
2207 default:
2208 break;
2209 }
2210
2211 switch (autoc & IXGBE_AUTOC_LMS_MASK) {
2212 case IXGBE_AUTOC_LMS_1G_AN:
2213 case IXGBE_AUTOC_LMS_1G_LINK_NO_AN:
2214 if (pma_pmd_1g == IXGBE_AUTOC_1G_KX_BX) {
2215 physical_layer = IXGBE_PHYSICAL_LAYER_1000BASE_KX |
2216 IXGBE_PHYSICAL_LAYER_1000BASE_BX;
2217 goto out;
2218 } else
2219 /* SFI mode so read SFP module */
2220 goto sfp_check;
2221 break;
2222 case IXGBE_AUTOC_LMS_10G_LINK_NO_AN:
2223 if (pma_pmd_10g_parallel == IXGBE_AUTOC_10G_CX4)
2224 physical_layer = IXGBE_PHYSICAL_LAYER_10GBASE_CX4;
2225 else if (pma_pmd_10g_parallel == IXGBE_AUTOC_10G_KX4)
2226 physical_layer = IXGBE_PHYSICAL_LAYER_10GBASE_KX4;
2227 else if (pma_pmd_10g_parallel == IXGBE_AUTOC_10G_XAUI)
2228 physical_layer = IXGBE_PHYSICAL_LAYER_10GBASE_XAUI;
2229 goto out;
2230 break;
2231 case IXGBE_AUTOC_LMS_10G_SERIAL:
2232 if (pma_pmd_10g_serial == IXGBE_AUTOC2_10G_KR) {
2233 physical_layer = IXGBE_PHYSICAL_LAYER_10GBASE_KR;
2234 goto out;
2235 } else if (pma_pmd_10g_serial == IXGBE_AUTOC2_10G_SFI)
2236 goto sfp_check;
2237 break;
2238 case IXGBE_AUTOC_LMS_KX4_KX_KR:
2239 case IXGBE_AUTOC_LMS_KX4_KX_KR_1G_AN:
2240 if (autoc & IXGBE_AUTOC_KX_SUPP)
2241 physical_layer |= IXGBE_PHYSICAL_LAYER_1000BASE_KX;
2242 if (autoc & IXGBE_AUTOC_KX4_SUPP)
2243 physical_layer |= IXGBE_PHYSICAL_LAYER_10GBASE_KX4;
2244 if (autoc & IXGBE_AUTOC_KR_SUPP)
2245 physical_layer |= IXGBE_PHYSICAL_LAYER_10GBASE_KR;
2246 goto out;
2247 break;
2248 default:
2249 goto out;
2250 break;
2251 }
2252
2253sfp_check:
2254 /* SFP check must be done last since DA modules are sometimes used to
2255 * test KR mode - we need to id KR mode correctly before SFP module.
2256 * Call identify_sfp because the pluggable module may have changed */
2257 physical_layer = ixgbe_get_supported_phy_sfp_layer_generic(hw);
2258out:
2259 return physical_layer;
2260}
2261
2262/**
2263 * ixgbe_enable_rx_dma_82599 - Enable the Rx DMA unit on 82599
2264 * @hw: pointer to hardware structure
2265 * @regval: register value to write to RXCTRL
2266 *
2267 * Enables the Rx DMA unit for 82599
2268 **/
2269s32 ixgbe_enable_rx_dma_82599(struct ixgbe_hw *hw, u32 regval)
2270{
2271
2272 DEBUGFUNC("ixgbe_enable_rx_dma_82599");
2273
2274 /*
2275 * Workaround for 82599 silicon errata when enabling the Rx datapath.
2276 * If traffic is incoming before we enable the Rx unit, it could hang
2277 * the Rx DMA unit. Therefore, make sure the security engine is
2278 * completely disabled prior to enabling the Rx unit.
2279 */
2280
2281 hw->mac.ops.disable_sec_rx_path(hw);
2282
2283 if (regval & IXGBE_RXCTRL_RXEN)
2284 ixgbe_enable_rx(hw);
2285 else
2286 ixgbe_disable_rx(hw);
2287
2288 hw->mac.ops.enable_sec_rx_path(hw);
2289
2290 return IXGBE_SUCCESS;
2291}
2292
2293/**
2294 * ixgbe_verify_fw_version_82599 - verify FW version for 82599
2295 * @hw: pointer to hardware structure
2296 *
2297 * Verifies that installed the firmware version is 0.6 or higher
2298 * for SFI devices. All 82599 SFI devices should have version 0.6 or higher.
2299 *
2300 * Returns IXGBE_ERR_EEPROM_VERSION if the FW is not present or
2301 * if the FW version is not supported.
2302 **/
2303static s32 ixgbe_verify_fw_version_82599(struct ixgbe_hw *hw)
2304{
2305 s32 status = IXGBE_ERR_EEPROM_VERSION;
2306 u16 fw_offset, fw_ptp_cfg_offset;
2307 u16 fw_version;
2308
2309 DEBUGFUNC("ixgbe_verify_fw_version_82599");
2310
2311 /* firmware check is only necessary for SFI devices */
2312 if (hw->phy.media_type != ixgbe_media_type_fiber) {
2313 status = IXGBE_SUCCESS;
2314 goto fw_version_out;
2315 }
2316
2317 /* get the offset to the Firmware Module block */
2318 if (hw->eeprom.ops.read(hw, IXGBE_FW_PTR, &fw_offset)) {
2319 ERROR_REPORT2(IXGBE_ERROR_INVALID_STATE,
2320 "eeprom read at offset %d failed", IXGBE_FW_PTR);
2321 return IXGBE_ERR_EEPROM_VERSION;
2322 }
2323
2324 if ((fw_offset == 0) || (fw_offset == 0xFFFF))
2325 goto fw_version_out;
2326
2327 /* get the offset to the Pass Through Patch Configuration block */
2328 if (hw->eeprom.ops.read(hw, (fw_offset +
2329 IXGBE_FW_PASSTHROUGH_PATCH_CONFIG_PTR),
2330 &fw_ptp_cfg_offset)) {
2331 ERROR_REPORT2(IXGBE_ERROR_INVALID_STATE,
2332 "eeprom read at offset %d failed",
2333 fw_offset +
2334 IXGBE_FW_PASSTHROUGH_PATCH_CONFIG_PTR);
2335 return IXGBE_ERR_EEPROM_VERSION;
2336 }
2337
2338 if ((fw_ptp_cfg_offset == 0) || (fw_ptp_cfg_offset == 0xFFFF))
2339 goto fw_version_out;
2340
2341 /* get the firmware version */
2342 if (hw->eeprom.ops.read(hw, (fw_ptp_cfg_offset +
2343 IXGBE_FW_PATCH_VERSION_4), &fw_version)) {
2344 ERROR_REPORT2(IXGBE_ERROR_INVALID_STATE,
2345 "eeprom read at offset %d failed",
2346 fw_ptp_cfg_offset + IXGBE_FW_PATCH_VERSION_4);
2347 return IXGBE_ERR_EEPROM_VERSION;
2348 }
2349
2350 if (fw_version > 0x5)
2351 status = IXGBE_SUCCESS;
2352
2353fw_version_out:
2354 return status;
2355}
2356
2357/**
2358 * ixgbe_verify_lesm_fw_enabled_82599 - Checks LESM FW module state.
2359 * @hw: pointer to hardware structure
2360 *
2361 * Returns TRUE if the LESM FW module is present and enabled. Otherwise
2362 * returns FALSE. Smart Speed must be disabled if LESM FW module is enabled.
2363 **/
2364bool ixgbe_verify_lesm_fw_enabled_82599(struct ixgbe_hw *hw)
2365{
2366 bool lesm_enabled = FALSE;
2367 u16 fw_offset, fw_lesm_param_offset, fw_lesm_state;
2368 s32 status;
2369
2370 DEBUGFUNC("ixgbe_verify_lesm_fw_enabled_82599");
2371
2372 /* get the offset to the Firmware Module block */
2373 status = hw->eeprom.ops.read(hw, IXGBE_FW_PTR, &fw_offset);
2374
2375 if ((status != IXGBE_SUCCESS) ||
2376 (fw_offset == 0) || (fw_offset == 0xFFFF))
2377 goto out;
2378
2379 /* get the offset to the LESM Parameters block */
2380 status = hw->eeprom.ops.read(hw, (fw_offset +
2381 IXGBE_FW_LESM_PARAMETERS_PTR),
2382 &fw_lesm_param_offset);
2383
2384 if ((status != IXGBE_SUCCESS) ||
2385 (fw_lesm_param_offset == 0) || (fw_lesm_param_offset == 0xFFFF))
2386 goto out;
2387
2388 /* get the LESM state word */
2389 status = hw->eeprom.ops.read(hw, (fw_lesm_param_offset +
2390 IXGBE_FW_LESM_STATE_1),
2391 &fw_lesm_state);
2392
2393 if ((status == IXGBE_SUCCESS) &&
2394 (fw_lesm_state & IXGBE_FW_LESM_STATE_ENABLED))
2395 lesm_enabled = TRUE;
2396
2397out:
2398 return lesm_enabled;
2399}
2400
2401/**
2402 * ixgbe_read_eeprom_buffer_82599 - Read EEPROM word(s) using
2403 * fastest available method
2404 *
2405 * @hw: pointer to hardware structure
2406 * @offset: offset of word in EEPROM to read
2407 * @words: number of words
2408 * @data: word(s) read from the EEPROM
2409 *
2410 * Retrieves 16 bit word(s) read from EEPROM
2411 **/
2412static s32 ixgbe_read_eeprom_buffer_82599(struct ixgbe_hw *hw, u16 offset,
2413 u16 words, u16 *data)
2414{
2415 struct ixgbe_eeprom_info *eeprom = &hw->eeprom;
2416 s32 ret_val = IXGBE_ERR_CONFIG;
2417
2418 DEBUGFUNC("ixgbe_read_eeprom_buffer_82599");
2419
2420 /*
2421 * If EEPROM is detected and can be addressed using 14 bits,
2422 * use EERD otherwise use bit bang
2423 */
2424 if ((eeprom->type == ixgbe_eeprom_spi) &&
2425 (offset + (words - 1) <= IXGBE_EERD_MAX_ADDR))
2426 ret_val = ixgbe_read_eerd_buffer_generic(hw, offset, words,
2427 data);
2428 else
2429 ret_val = ixgbe_read_eeprom_buffer_bit_bang_generic(hw, offset,
2430 words,
2431 data);
2432
2433 return ret_val;
2434}
2435
2436/**
2437 * ixgbe_read_eeprom_82599 - Read EEPROM word using
2438 * fastest available method
2439 *
2440 * @hw: pointer to hardware structure
2441 * @offset: offset of word in the EEPROM to read
2442 * @data: word read from the EEPROM
2443 *
2444 * Reads a 16 bit word from the EEPROM
2445 **/
2446static s32 ixgbe_read_eeprom_82599(struct ixgbe_hw *hw,
2447 u16 offset, u16 *data)
2448{
2449 struct ixgbe_eeprom_info *eeprom = &hw->eeprom;
2450 s32 ret_val = IXGBE_ERR_CONFIG;
2451
2452 DEBUGFUNC("ixgbe_read_eeprom_82599");
2453
2454 /*
2455 * If EEPROM is detected and can be addressed using 14 bits,
2456 * use EERD otherwise use bit bang
2457 */
2458 if ((eeprom->type == ixgbe_eeprom_spi) &&
2459 (offset <= IXGBE_EERD_MAX_ADDR))
2460 ret_val = ixgbe_read_eerd_generic(hw, offset, data);
2461 else
2462 ret_val = ixgbe_read_eeprom_bit_bang_generic(hw, offset, data);
2463
2464 return ret_val;
2465}
2466
2467/**
2468 * ixgbe_reset_pipeline_82599 - perform pipeline reset
2469 *
2470 * @hw: pointer to hardware structure
2471 *
2472 * Reset pipeline by asserting Restart_AN together with LMS change to ensure
2473 * full pipeline reset. This function assumes the SW/FW lock is held.
2474 **/
2475s32 ixgbe_reset_pipeline_82599(struct ixgbe_hw *hw)
2476{
2477 s32 ret_val;
2478 u32 anlp1_reg = 0;
2479 u32 i, autoc_reg, autoc2_reg;
2480
2481 /* Enable link if disabled in NVM */
2482 autoc2_reg = IXGBE_READ_REG(hw, IXGBE_AUTOC2);
2483 if (autoc2_reg & IXGBE_AUTOC2_LINK_DISABLE_MASK) {
2484 autoc2_reg &= ~IXGBE_AUTOC2_LINK_DISABLE_MASK;
2485 IXGBE_WRITE_REG(hw, IXGBE_AUTOC2, autoc2_reg);
2486 IXGBE_WRITE_FLUSH(hw);
2487 }
2488
2489 autoc_reg = IXGBE_READ_REG(hw, IXGBE_AUTOC);
2490 autoc_reg |= IXGBE_AUTOC_AN_RESTART;
2491 /* Write AUTOC register with toggled LMS[2] bit and Restart_AN */
2492 IXGBE_WRITE_REG(hw, IXGBE_AUTOC,
2493 autoc_reg ^ (0x4 << IXGBE_AUTOC_LMS_SHIFT));
2494 /* Wait for AN to leave state 0 */
2495 for (i = 0; i < 10; i++) {
2496 msec_delay(4);
2497 anlp1_reg = IXGBE_READ_REG(hw, IXGBE_ANLP1);
2498 if (anlp1_reg & IXGBE_ANLP1_AN_STATE_MASK)
2499 break;
2500 }
2501
2502 if (!(anlp1_reg & IXGBE_ANLP1_AN_STATE_MASK)) {
2503 DEBUGOUT("auto negotiation not completed\n");
2504 ret_val = IXGBE_ERR_RESET_FAILED;
2505 goto reset_pipeline_out;
2506 }
2507
2508 ret_val = IXGBE_SUCCESS;
2509
2510reset_pipeline_out:
2511 /* Write AUTOC register with original LMS field and Restart_AN */
2512 IXGBE_WRITE_REG(hw, IXGBE_AUTOC, autoc_reg);
2513 IXGBE_WRITE_FLUSH(hw);
2514
2515 return ret_val;
2516}
2517
2518/**
2519 * ixgbe_read_i2c_byte_82599 - Reads 8 bit word over I2C
2520 * @hw: pointer to hardware structure
2521 * @byte_offset: byte offset to read
2522 * @data: value read
2523 *
2524 * Performs byte read operation to SFP module's EEPROM over I2C interface at
2525 * a specified device address.
2526 **/
2527static s32 ixgbe_read_i2c_byte_82599(struct ixgbe_hw *hw, u8 byte_offset,
2528 u8 dev_addr, u8 *data)
2529{
2530 u32 esdp;
2531 s32 status;
2532 s32 timeout = 200;
2533
2534 DEBUGFUNC("ixgbe_read_i2c_byte_82599");
2535
2536 if (hw->phy.qsfp_shared_i2c_bus == TRUE) {
2537 /* Acquire I2C bus ownership. */
2538 esdp = IXGBE_READ_REG(hw, IXGBE_ESDP);
2539 esdp |= IXGBE_ESDP_SDP0;
2540 IXGBE_WRITE_REG(hw, IXGBE_ESDP, esdp);
2541 IXGBE_WRITE_FLUSH(hw);
2542
2543 while (timeout) {
2544 esdp = IXGBE_READ_REG(hw, IXGBE_ESDP);
2545 if (esdp & IXGBE_ESDP_SDP1)
2546 break;
2547
2548 msec_delay(5);
2549 timeout--;
2550 }
2551
2552 if (!timeout) {
2553 DEBUGOUT("Driver can't access resource,"
2554 " acquiring I2C bus timeout.\n");
2555 status = IXGBE_ERR_I2C;
2556 goto release_i2c_access;
2557 }
2558 }
2559
2560 status = ixgbe_read_i2c_byte_generic(hw, byte_offset, dev_addr, data);
2561
2562release_i2c_access:
2563
2564 if (hw->phy.qsfp_shared_i2c_bus == TRUE) {
2565 /* Release I2C bus ownership. */
2566 esdp = IXGBE_READ_REG(hw, IXGBE_ESDP);
2567 esdp &= ~IXGBE_ESDP_SDP0;
2568 IXGBE_WRITE_REG(hw, IXGBE_ESDP, esdp);
2569 IXGBE_WRITE_FLUSH(hw);
2570 }
2571
2572 return status;
2573}
2574
2575/**
2576 * ixgbe_write_i2c_byte_82599 - Writes 8 bit word over I2C
2577 * @hw: pointer to hardware structure
2578 * @byte_offset: byte offset to write
2579 * @data: value to write
2580 *
2581 * Performs byte write operation to SFP module's EEPROM over I2C interface at
2582 * a specified device address.
2583 **/
2584static s32 ixgbe_write_i2c_byte_82599(struct ixgbe_hw *hw, u8 byte_offset,
2585 u8 dev_addr, u8 data)
2586{
2587 u32 esdp;
2588 s32 status;
2589 s32 timeout = 200;
2590
2591 DEBUGFUNC("ixgbe_write_i2c_byte_82599");
2592
2593 if (hw->phy.qsfp_shared_i2c_bus == TRUE) {
2594 /* Acquire I2C bus ownership. */
2595 esdp = IXGBE_READ_REG(hw, IXGBE_ESDP);
2596 esdp |= IXGBE_ESDP_SDP0;
2597 IXGBE_WRITE_REG(hw, IXGBE_ESDP, esdp);
2598 IXGBE_WRITE_FLUSH(hw);
2599
2600 while (timeout) {
2601 esdp = IXGBE_READ_REG(hw, IXGBE_ESDP);
2602 if (esdp & IXGBE_ESDP_SDP1)
2603 break;
2604
2605 msec_delay(5);
2606 timeout--;
2607 }
2608
2609 if (!timeout) {
2610 DEBUGOUT("Driver can't access resource,"
2611 " acquiring I2C bus timeout.\n");
2612 status = IXGBE_ERR_I2C;
2613 goto release_i2c_access;
2614 }
2615 }
2616
2617 status = ixgbe_write_i2c_byte_generic(hw, byte_offset, dev_addr, data);
2618
2619release_i2c_access:
2620
2621 if (hw->phy.qsfp_shared_i2c_bus == TRUE) {
2622 /* Release I2C bus ownership. */
2623 esdp = IXGBE_READ_REG(hw, IXGBE_ESDP);
2624 esdp &= ~IXGBE_ESDP_SDP0;
2625 IXGBE_WRITE_REG(hw, IXGBE_ESDP, esdp);
2626 IXGBE_WRITE_FLUSH(hw);
2627 }
2628
2629 return status;
2630}